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         /* 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         { }     /* Terminating entry */
 117 };
 118
 119 MODULE_DEVICE_TABLE(usb, btusb_table);
 120
 121 static struct usb_device_id blacklist_table[] = {
 122         /* CSR BlueCore devices */
 123         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 124
 125         /* Broadcom BCM2033 without firmware */
 126         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 127
 128         /* Atheros 3011 with sflash firmware */
 129         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 130         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 131         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 132         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 133         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 134         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 135
 136         /* Atheros AR9285 Malbec with sflash firmware */
 137         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 138
 139         /* Atheros 3012 with sflash firmware */
 140         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 141         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 142         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 143         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 144         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 145         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 146         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 147         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 148         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 149         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 150         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 151         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 152         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 153         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 154         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 155         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 156         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 157         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 158         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 159         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 160         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 161         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 162         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 163         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 164
 165         /* Atheros AR5BBU12 with sflash firmware */
 166         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 167
 168         /* Atheros AR5BBU12 with sflash firmware */
 169         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 170         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 171
 172         /* Broadcom BCM2035 */
 173         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 174         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 175         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 176
 177         /* Broadcom BCM2045 */
 178         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 179         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 180
 181         /* IBM/Lenovo ThinkPad with Broadcom chip */
 182         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 183         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 184
 185         /* HP laptop with Broadcom chip */
 186         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 187
 188         /* Dell laptop with Broadcom chip */
 189         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 190
 191         /* Dell Wireless 370 and 410 devices */
 192         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 193         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 194
 195         /* Belkin F8T012 and F8T013 devices */
 196         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 197         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 198
 199         /* Asus WL-BTD202 device */
 200         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 201
 202         /* Kensington Bluetooth USB adapter */
 203         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 204
 205         /* RTX Telecom based adapters with buggy SCO support */
 206         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 207         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 208
 209         /* CONWISE Technology based adapters with buggy SCO support */
 210         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 211
 212         /* Digianswer devices */
 213         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 214         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 215
 216         /* CSR BlueCore Bluetooth Sniffer */
 217         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
 218
 219         /* Frontline ComProbe Bluetooth Sniffer */
 220         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
 221
 222         /* Intel Bluetooth device */
 223         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 224
 225         { }     /* Terminating entry */
 226 };
 227
 228 #define BTUSB_MAX_ISOC_FRAMES   10
 229
 230 #define BTUSB_INTR_RUNNING      0
 231 #define BTUSB_BULK_RUNNING      1
 232 #define BTUSB_ISOC_RUNNING      2
 233 #define BTUSB_SUSPENDING        3
 234 #define BTUSB_DID_ISO_RESUME    4
 235
 236 struct btusb_data {
 237         struct hci_dev       *hdev;
 238         struct usb_device    *udev;
 239         struct usb_interface *intf;
 240         struct usb_interface *isoc;
 241
 242         spinlock_t lock;
 243
 244         unsigned long flags;
 245
 246         struct work_struct work;
 247         struct work_struct waker;
 248
 249         struct usb_anchor tx_anchor;
 250         struct usb_anchor intr_anchor;
 251         struct usb_anchor bulk_anchor;
 252         struct usb_anchor isoc_anchor;
 253         struct usb_anchor deferred;
 254         int tx_in_flight;
 255         spinlock_t txlock;
 256
 257         struct usb_endpoint_descriptor *intr_ep;
 258         struct usb_endpoint_descriptor *bulk_tx_ep;
 259         struct usb_endpoint_descriptor *bulk_rx_ep;
 260         struct usb_endpoint_descriptor *isoc_tx_ep;
 261         struct usb_endpoint_descriptor *isoc_rx_ep;
 262
 263         __u8 cmdreq_type;
 264
 265         unsigned int sco_num;
 266         int isoc_altsetting;
 267         int suspend_count;
 268 };
 269
 270 static int inc_tx(struct btusb_data *data)
 271 {
 272         unsigned long flags;
 273         int rv;
 274
 275         spin_lock_irqsave(&data->txlock, flags);
 276         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
 277         if (!rv)
 278                 data->tx_in_flight++;
 279         spin_unlock_irqrestore(&data->txlock, flags);
 280
 281         return rv;
 282 }
 283
 284 static void btusb_intr_complete(struct urb *urb)
 285 {
 286         struct hci_dev *hdev = urb->context;
 287         struct btusb_data *data = hci_get_drvdata(hdev);
 288         int err;
 289
 290         BT_DBG("%s urb %p status %d count %d", hdev->name,
 291                                         urb, urb->status, urb->actual_length);
 292
 293         if (!test_bit(HCI_RUNNING, &hdev->flags))
 294                 return;
 295
 296         if (urb->status == 0) {
 297                 hdev->stat.byte_rx += urb->actual_length;
 298
 299                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
 300                                                 urb->transfer_buffer,
 301                                                 urb->actual_length) < 0) {
 302                         BT_ERR("%s corrupted event packet", hdev->name);
 303                         hdev->stat.err_rx++;
 304                 }
 305         }
 306
 307         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 308                 return;
 309
 310         usb_mark_last_busy(data->udev);
 311         usb_anchor_urb(urb, &data->intr_anchor);
 312
 313         err = usb_submit_urb(urb, GFP_ATOMIC);
 314         if (err < 0) {
 315                 /* -EPERM: urb is being killed;
 316                  * -ENODEV: device got disconnected */
 317                 if (err != -EPERM && err != -ENODEV)
 318                         BT_ERR("%s urb %p failed to resubmit (%d)",
 319                                                 hdev->name, urb, -err);
 320                 usb_unanchor_urb(urb);
 321         }
 322 }
 323
 324 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 325 {
 326         struct btusb_data *data = hci_get_drvdata(hdev);
 327         struct urb *urb;
 328         unsigned char *buf;
 329         unsigned int pipe;
 330         int err, size;
 331
 332         BT_DBG("%s", hdev->name);
 333
 334         if (!data->intr_ep)
 335                 return -ENODEV;
 336
 337         urb = usb_alloc_urb(0, mem_flags);
 338         if (!urb)
 339                 return -ENOMEM;
 340
 341         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 342
 343         buf = kmalloc(size, mem_flags);
 344         if (!buf) {
 345                 usb_free_urb(urb);
 346                 return -ENOMEM;
 347         }
 348
 349         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 350
 351         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 352                                                 btusb_intr_complete, hdev,
 353                                                 data->intr_ep->bInterval);
 354
 355         urb->transfer_flags |= URB_FREE_BUFFER;
 356
 357         usb_anchor_urb(urb, &data->intr_anchor);
 358
 359         err = usb_submit_urb(urb, mem_flags);
 360         if (err < 0) {
 361                 if (err != -EPERM && err != -ENODEV)
 362                         BT_ERR("%s urb %p submission failed (%d)",
 363                                                 hdev->name, urb, -err);
 364                 usb_unanchor_urb(urb);
 365         }
 366
 367         usb_free_urb(urb);
 368
 369         return err;
 370 }
 371
 372 static void btusb_bulk_complete(struct urb *urb)
 373 {
 374         struct hci_dev *hdev = urb->context;
 375         struct btusb_data *data = hci_get_drvdata(hdev);
 376         int err;
 377
 378         BT_DBG("%s urb %p status %d count %d", hdev->name,
 379                                         urb, urb->status, urb->actual_length);
 380
 381         if (!test_bit(HCI_RUNNING, &hdev->flags))
 382                 return;
 383
 384         if (urb->status == 0) {
 385                 hdev->stat.byte_rx += urb->actual_length;
 386
 387                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
 388                                                 urb->transfer_buffer,
 389                                                 urb->actual_length) < 0) {
 390                         BT_ERR("%s corrupted ACL packet", hdev->name);
 391                         hdev->stat.err_rx++;
 392                 }
 393         }
 394
 395         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 396                 return;
 397
 398         usb_anchor_urb(urb, &data->bulk_anchor);
 399         usb_mark_last_busy(data->udev);
 400
 401         err = usb_submit_urb(urb, GFP_ATOMIC);
 402         if (err < 0) {
 403                 /* -EPERM: urb is being killed;
 404                  * -ENODEV: device got disconnected */
 405                 if (err != -EPERM && err != -ENODEV)
 406                         BT_ERR("%s urb %p failed to resubmit (%d)",
 407                                                 hdev->name, urb, -err);
 408                 usb_unanchor_urb(urb);
 409         }
 410 }
 411
 412 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 413 {
 414         struct btusb_data *data = hci_get_drvdata(hdev);
 415         struct urb *urb;
 416         unsigned char *buf;
 417         unsigned int pipe;
 418         int err, size = HCI_MAX_FRAME_SIZE;
 419
 420         BT_DBG("%s", hdev->name);
 421
 422         if (!data->bulk_rx_ep)
 423                 return -ENODEV;
 424
 425         urb = usb_alloc_urb(0, mem_flags);
 426         if (!urb)
 427                 return -ENOMEM;
 428
 429         buf = kmalloc(size, mem_flags);
 430         if (!buf) {
 431                 usb_free_urb(urb);
 432                 return -ENOMEM;
 433         }
 434
 435         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 436
 437         usb_fill_bulk_urb(urb, data->udev, pipe,
 438                                         buf, size, btusb_bulk_complete, hdev);
 439
 440         urb->transfer_flags |= URB_FREE_BUFFER;
 441
 442         usb_mark_last_busy(data->udev);
 443         usb_anchor_urb(urb, &data->bulk_anchor);
 444
 445         err = usb_submit_urb(urb, mem_flags);
 446         if (err < 0) {
 447                 if (err != -EPERM && err != -ENODEV)
 448                         BT_ERR("%s urb %p submission failed (%d)",
 449                                                 hdev->name, urb, -err);
 450                 usb_unanchor_urb(urb);
 451         }
 452
 453         usb_free_urb(urb);
 454
 455         return err;
 456 }
 457
 458 static void btusb_isoc_complete(struct urb *urb)
 459 {
 460         struct hci_dev *hdev = urb->context;
 461         struct btusb_data *data = hci_get_drvdata(hdev);
 462         int i, err;
 463
 464         BT_DBG("%s urb %p status %d count %d", hdev->name,
 465                                         urb, urb->status, urb->actual_length);
 466
 467         if (!test_bit(HCI_RUNNING, &hdev->flags))
 468                 return;
 469
 470         if (urb->status == 0) {
 471                 for (i = 0; i < urb->number_of_packets; i++) {
 472                         unsigned int offset = urb->iso_frame_desc[i].offset;
 473                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 474
 475                         if (urb->iso_frame_desc[i].status)
 476                                 continue;
 477
 478                         hdev->stat.byte_rx += length;
 479
 480                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
 481                                                 urb->transfer_buffer + offset,
 482                                                                 length) < 0) {
 483                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 484                                 hdev->stat.err_rx++;
 485                         }
 486                 }
 487         }
 488
 489         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 490                 return;
 491
 492         usb_anchor_urb(urb, &data->isoc_anchor);
 493
 494         err = usb_submit_urb(urb, GFP_ATOMIC);
 495         if (err < 0) {
 496                 /* -EPERM: urb is being killed;
 497                  * -ENODEV: device got disconnected */
 498                 if (err != -EPERM && err != -ENODEV)
 499                         BT_ERR("%s urb %p failed to resubmit (%d)",
 500                                                 hdev->name, urb, -err);
 501                 usb_unanchor_urb(urb);
 502         }
 503 }
 504
 505 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 506 {
 507         int i, offset = 0;
 508
 509         BT_DBG("len %d mtu %d", len, mtu);
 510
 511         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 512                                         i++, offset += mtu, len -= mtu) {
 513                 urb->iso_frame_desc[i].offset = offset;
 514                 urb->iso_frame_desc[i].length = mtu;
 515         }
 516
 517         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 518                 urb->iso_frame_desc[i].offset = offset;
 519                 urb->iso_frame_desc[i].length = len;
 520                 i++;
 521         }
 522
 523         urb->number_of_packets = i;
 524 }
 525
 526 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 527 {
 528         struct btusb_data *data = hci_get_drvdata(hdev);
 529         struct urb *urb;
 530         unsigned char *buf;
 531         unsigned int pipe;
 532         int err, size;
 533
 534         BT_DBG("%s", hdev->name);
 535
 536         if (!data->isoc_rx_ep)
 537                 return -ENODEV;
 538
 539         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 540         if (!urb)
 541                 return -ENOMEM;
 542
 543         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 544                                                 BTUSB_MAX_ISOC_FRAMES;
 545
 546         buf = kmalloc(size, mem_flags);
 547         if (!buf) {
 548                 usb_free_urb(urb);
 549                 return -ENOMEM;
 550         }
 551
 552         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 553
 554         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 555                                 hdev, data->isoc_rx_ep->bInterval);
 556
 557         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
 558
 559         __fill_isoc_descriptor(urb, size,
 560                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 561
 562         usb_anchor_urb(urb, &data->isoc_anchor);
 563
 564         err = usb_submit_urb(urb, mem_flags);
 565         if (err < 0) {
 566                 if (err != -EPERM && err != -ENODEV)
 567                         BT_ERR("%s urb %p submission failed (%d)",
 568                                                 hdev->name, urb, -err);
 569                 usb_unanchor_urb(urb);
 570         }
 571
 572         usb_free_urb(urb);
 573
 574         return err;
 575 }
 576
 577 static void btusb_tx_complete(struct urb *urb)
 578 {
 579         struct sk_buff *skb = urb->context;
 580         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 581         struct btusb_data *data = hci_get_drvdata(hdev);
 582
 583         BT_DBG("%s urb %p status %d count %d", hdev->name,
 584                                         urb, urb->status, urb->actual_length);
 585
 586         if (!test_bit(HCI_RUNNING, &hdev->flags))
 587                 goto done;
 588
 589         if (!urb->status)
 590                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 591         else
 592                 hdev->stat.err_tx++;
 593
 594 done:
 595         spin_lock(&data->txlock);
 596         data->tx_in_flight--;
 597         spin_unlock(&data->txlock);
 598
 599         kfree(urb->setup_packet);
 600
 601         kfree_skb(skb);
 602 }
 603
 604 static void btusb_isoc_tx_complete(struct urb *urb)
 605 {
 606         struct sk_buff *skb = urb->context;
 607         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 608
 609         BT_DBG("%s urb %p status %d count %d", hdev->name,
 610                                         urb, urb->status, urb->actual_length);
 611
 612         if (!test_bit(HCI_RUNNING, &hdev->flags))
 613                 goto done;
 614
 615         if (!urb->status)
 616                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 617         else
 618                 hdev->stat.err_tx++;
 619
 620 done:
 621         kfree(urb->setup_packet);
 622
 623         kfree_skb(skb);
 624 }
 625
 626 static int btusb_open(struct hci_dev *hdev)
 627 {
 628         struct btusb_data *data = hci_get_drvdata(hdev);
 629         int err;
 630
 631         BT_DBG("%s", hdev->name);
 632
 633         err = usb_autopm_get_interface(data->intf);
 634         if (err < 0)
 635                 return err;
 636
 637         data->intf->needs_remote_wakeup = 1;
 638
 639         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 640                 goto done;
 641
 642         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 643                 goto done;
 644
 645         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 646         if (err < 0)
 647                 goto failed;
 648
 649         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 650         if (err < 0) {
 651                 usb_kill_anchored_urbs(&data->intr_anchor);
 652                 goto failed;
 653         }
 654
 655         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 656         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 657
 658 done:
 659         usb_autopm_put_interface(data->intf);
 660         return 0;
 661
 662 failed:
 663         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 664         clear_bit(HCI_RUNNING, &hdev->flags);
 665         usb_autopm_put_interface(data->intf);
 666         return err;
 667 }
 668
 669 static void btusb_stop_traffic(struct btusb_data *data)
 670 {
 671         usb_kill_anchored_urbs(&data->intr_anchor);
 672         usb_kill_anchored_urbs(&data->bulk_anchor);
 673         usb_kill_anchored_urbs(&data->isoc_anchor);
 674 }
 675
 676 static int btusb_close(struct hci_dev *hdev)
 677 {
 678         struct btusb_data *data = hci_get_drvdata(hdev);
 679         int err;
 680
 681         BT_DBG("%s", hdev->name);
 682
 683         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 684                 return 0;
 685
 686         cancel_work_sync(&data->work);
 687         cancel_work_sync(&data->waker);
 688
 689         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 690         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 691         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 692
 693         btusb_stop_traffic(data);
 694         err = usb_autopm_get_interface(data->intf);
 695         if (err < 0)
 696                 goto failed;
 697
 698         data->intf->needs_remote_wakeup = 0;
 699         usb_autopm_put_interface(data->intf);
 700
 701 failed:
 702         usb_scuttle_anchored_urbs(&data->deferred);
 703         return 0;
 704 }
 705
 706 static int btusb_flush(struct hci_dev *hdev)
 707 {
 708         struct btusb_data *data = hci_get_drvdata(hdev);
 709
 710         BT_DBG("%s", hdev->name);
 711
 712         usb_kill_anchored_urbs(&data->tx_anchor);
 713
 714         return 0;
 715 }
 716
 717 static int btusb_send_frame(struct sk_buff *skb)
 718 {
 719         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 720         struct btusb_data *data = hci_get_drvdata(hdev);
 721         struct usb_ctrlrequest *dr;
 722         struct urb *urb;
 723         unsigned int pipe;
 724         int err;
 725
 726         BT_DBG("%s", hdev->name);
 727
 728         if (!test_bit(HCI_RUNNING, &hdev->flags))
 729                 return -EBUSY;
 730
 731         switch (bt_cb(skb)->pkt_type) {
 732         case HCI_COMMAND_PKT:
 733                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 734                 if (!urb)
 735                         return -ENOMEM;
 736
 737                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
 738                 if (!dr) {
 739                         usb_free_urb(urb);
 740                         return -ENOMEM;
 741                 }
 742
 743                 dr->bRequestType = data->cmdreq_type;
 744                 dr->bRequest     = 0;
 745                 dr->wIndex       = 0;
 746                 dr->wValue       = 0;
 747                 dr->wLength      = __cpu_to_le16(skb->len);
 748
 749                 pipe = usb_sndctrlpipe(data->udev, 0x00);
 750
 751                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
 752                                 skb->data, skb->len, btusb_tx_complete, skb);
 753
 754                 hdev->stat.cmd_tx++;
 755                 break;
 756
 757         case HCI_ACLDATA_PKT:
 758                 if (!data->bulk_tx_ep)
 759                         return -ENODEV;
 760
 761                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 762                 if (!urb)
 763                         return -ENOMEM;
 764
 765                 pipe = usb_sndbulkpipe(data->udev,
 766                                         data->bulk_tx_ep->bEndpointAddress);
 767
 768                 usb_fill_bulk_urb(urb, data->udev, pipe,
 769                                 skb->data, skb->len, btusb_tx_complete, skb);
 770
 771                 hdev->stat.acl_tx++;
 772                 break;
 773
 774         case HCI_SCODATA_PKT:
 775                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
 776                         return -ENODEV;
 777
 778                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
 779                 if (!urb)
 780                         return -ENOMEM;
 781
 782                 pipe = usb_sndisocpipe(data->udev,
 783                                         data->isoc_tx_ep->bEndpointAddress);
 784
 785                 usb_fill_int_urb(urb, data->udev, pipe,
 786                                 skb->data, skb->len, btusb_isoc_tx_complete,
 787                                 skb, data->isoc_tx_ep->bInterval);
 788
 789                 urb->transfer_flags  = URB_ISO_ASAP;
 790
 791                 __fill_isoc_descriptor(urb, skb->len,
 792                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 793
 794                 hdev->stat.sco_tx++;
 795                 goto skip_waking;
 796
 797         default:
 798                 return -EILSEQ;
 799         }
 800
 801         err = inc_tx(data);
 802         if (err) {
 803                 usb_anchor_urb(urb, &data->deferred);
 804                 schedule_work(&data->waker);
 805                 err = 0;
 806                 goto done;
 807         }
 808
 809 skip_waking:
 810         usb_anchor_urb(urb, &data->tx_anchor);
 811
 812         err = usb_submit_urb(urb, GFP_ATOMIC);
 813         if (err < 0) {
 814                 if (err != -EPERM && err != -ENODEV)
 815                         BT_ERR("%s urb %p submission failed (%d)",
 816                                                 hdev->name, urb, -err);
 817                 kfree(urb->setup_packet);
 818                 usb_unanchor_urb(urb);
 819         } else {
 820                 usb_mark_last_busy(data->udev);
 821         }
 822
 823 done:
 824         usb_free_urb(urb);
 825         return err;
 826 }
 827
 828 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 829 {
 830         struct btusb_data *data = hci_get_drvdata(hdev);
 831
 832         BT_DBG("%s evt %d", hdev->name, evt);
 833
 834         if (hdev->conn_hash.sco_num != data->sco_num) {
 835                 data->sco_num = hdev->conn_hash.sco_num;
 836                 schedule_work(&data->work);
 837         }
 838 }
 839
 840 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
 841 {
 842         struct btusb_data *data = hci_get_drvdata(hdev);
 843         struct usb_interface *intf = data->isoc;
 844         struct usb_endpoint_descriptor *ep_desc;
 845         int i, err;
 846
 847         if (!data->isoc)
 848                 return -ENODEV;
 849
 850         err = usb_set_interface(data->udev, 1, altsetting);
 851         if (err < 0) {
 852                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
 853                 return err;
 854         }
 855
 856         data->isoc_altsetting = altsetting;
 857
 858         data->isoc_tx_ep = NULL;
 859         data->isoc_rx_ep = NULL;
 860
 861         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 862                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 863
 864                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
 865                         data->isoc_tx_ep = ep_desc;
 866                         continue;
 867                 }
 868
 869                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
 870                         data->isoc_rx_ep = ep_desc;
 871                         continue;
 872                 }
 873         }
 874
 875         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
 876                 BT_ERR("%s invalid SCO descriptors", hdev->name);
 877                 return -ENODEV;
 878         }
 879
 880         return 0;
 881 }
 882
 883 static void btusb_work(struct work_struct *work)
 884 {
 885         struct btusb_data *data = container_of(work, struct btusb_data, work);
 886         struct hci_dev *hdev = data->hdev;
 887         int new_alts;
 888         int err;
 889
 890         if (hdev->conn_hash.sco_num > 0) {
 891                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
 892                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
 893                         if (err < 0) {
 894                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 895                                 usb_kill_anchored_urbs(&data->isoc_anchor);
 896                                 return;
 897                         }
 898
 899                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
 900                 }
 901
 902                 if (hdev->voice_setting & 0x0020) {
 903                         static const int alts[3] = { 2, 4, 5 };
 904                         new_alts = alts[hdev->conn_hash.sco_num - 1];
 905                 } else {
 906                         new_alts = hdev->conn_hash.sco_num;
 907                 }
 908
 909                 if (data->isoc_altsetting != new_alts) {
 910                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 911                         usb_kill_anchored_urbs(&data->isoc_anchor);
 912
 913                         if (__set_isoc_interface(hdev, new_alts) < 0)
 914                                 return;
 915                 }
 916
 917                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
 918                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
 919                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 920                         else
 921                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
 922                 }
 923         } else {
 924                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 925                 usb_kill_anchored_urbs(&data->isoc_anchor);
 926
 927                 __set_isoc_interface(hdev, 0);
 928                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
 929                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
 930         }
 931 }
 932
 933 static void btusb_waker(struct work_struct *work)
 934 {
 935         struct btusb_data *data = container_of(work, struct btusb_data, waker);
 936         int err;
 937
 938         err = usb_autopm_get_interface(data->intf);
 939         if (err < 0)
 940                 return;
 941
 942         usb_autopm_put_interface(data->intf);
 943 }
 944
 945 static int btusb_setup_bcm92035(struct hci_dev *hdev)
 946 {
 947         struct sk_buff *skb;
 948         u8 val = 0x00;
 949
 950         BT_DBG("%s", hdev->name);
 951
 952         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
 953         if (IS_ERR(skb))
 954                 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
 955         else
 956                 kfree_skb(skb);
 957
 958         return 0;
 959 }
 960
 961 struct intel_version {
 962         u8 status;
 963         u8 hw_platform;
 964         u8 hw_variant;
 965         u8 hw_revision;
 966         u8 fw_variant;
 967         u8 fw_revision;
 968         u8 fw_build_num;
 969         u8 fw_build_ww;
 970         u8 fw_build_yy;
 971         u8 fw_patch_num;
 972 } __packed;
 973
 974 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
 975                                                 struct intel_version *ver)
 976 {
 977         const struct firmware *fw;
 978         char fwname[64];
 979         int ret;
 980
 981         snprintf(fwname, sizeof(fwname),
 982                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
 983                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
 984                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
 985                  ver->fw_build_ww, ver->fw_build_yy);
 986
 987         ret = request_firmware(&fw, fwname, &hdev->dev);
 988         if (ret < 0) {
 989                 if (ret == -EINVAL) {
 990                         BT_ERR("%s Intel firmware file request failed (%d)",
 991                                hdev->name, ret);
 992                         return NULL;
 993                 }
 994
 995                 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
 996                        hdev->name, fwname, ret);
 997
 998                 /* If the correct firmware patch file is not found, use the
 999                  * default firmware patch file instead
1000                  */
1001                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1002                          ver->hw_platform, ver->hw_variant);
1003                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1004                         BT_ERR("%s failed to open default Intel fw file: %s",
1005                                hdev->name, fwname);
1006                         return NULL;
1007                 }
1008         }
1009
1010         BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1011
1012         return fw;
1013 }
1014
1015 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1016                                       const struct firmware *fw,
1017                                       const u8 **fw_ptr, int *disable_patch)
1018 {
1019         struct sk_buff *skb;
1020         struct hci_command_hdr *cmd;
1021         const u8 *cmd_param;
1022         struct hci_event_hdr *evt = NULL;
1023         const u8 *evt_param = NULL;
1024         int remain = fw->size - (*fw_ptr - fw->data);
1025
1026         /* The first byte indicates the types of the patch command or event.
1027          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1028          * in the current firmware buffer doesn't start with 0x01 or
1029          * the size of remain buffer is smaller than HCI command header,
1030          * the firmware file is corrupted and it should stop the patching
1031          * process.
1032          */
1033         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1034                 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1035                 return -EINVAL;
1036         }
1037         (*fw_ptr)++;
1038         remain--;
1039
1040         cmd = (struct hci_command_hdr *)(*fw_ptr);
1041         *fw_ptr += sizeof(*cmd);
1042         remain -= sizeof(*cmd);
1043
1044         /* Ensure that the remain firmware data is long enough than the length
1045          * of command parameter. If not, the firmware file is corrupted.
1046          */
1047         if (remain < cmd->plen) {
1048                 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1049                 return -EFAULT;
1050         }
1051
1052         /* If there is a command that loads a patch in the firmware
1053          * file, then enable the patch upon success, otherwise just
1054          * disable the manufacturer mode, for example patch activation
1055          * is not required when the default firmware patch file is used
1056          * because there are no patch data to load.
1057          */
1058         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1059                 *disable_patch = 0;
1060
1061         cmd_param = *fw_ptr;
1062         *fw_ptr += cmd->plen;
1063         remain -= cmd->plen;
1064
1065         /* This reads the expected events when the above command is sent to the
1066          * device. Some vendor commands expects more than one events, for
1067          * example command status event followed by vendor specific event.
1068          * For this case, it only keeps the last expected event. so the command
1069          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1070          * last expected event.
1071          */
1072         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1073                 (*fw_ptr)++;
1074                 remain--;
1075
1076                 evt = (struct hci_event_hdr *)(*fw_ptr);
1077                 *fw_ptr += sizeof(*evt);
1078                 remain -= sizeof(*evt);
1079
1080                 if (remain < evt->plen) {
1081                         BT_ERR("%s Intel fw corrupted: invalid evt len",
1082                                hdev->name);
1083                         return -EFAULT;
1084                 }
1085
1086                 evt_param = *fw_ptr;
1087                 *fw_ptr += evt->plen;
1088                 remain -= evt->plen;
1089         }
1090
1091         /* Every HCI commands in the firmware file has its correspond event.
1092          * If event is not found or remain is smaller than zero, the firmware
1093          * file is corrupted.
1094          */
1095         if (!evt || !evt_param || remain < 0) {
1096                 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1097                 return -EFAULT;
1098         }
1099
1100         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1101                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1102         if (IS_ERR(skb)) {
1103                 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1104                        hdev->name, cmd->opcode, PTR_ERR(skb));
1105                 return PTR_ERR(skb);
1106         }
1107
1108         /* It ensures that the returned event matches the event data read from
1109          * the firmware file. At fist, it checks the length and then
1110          * the contents of the event.
1111          */
1112         if (skb->len != evt->plen) {
1113                 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1114                        le16_to_cpu(cmd->opcode));
1115                 kfree_skb(skb);
1116                 return -EFAULT;
1117         }
1118
1119         if (memcmp(skb->data, evt_param, evt->plen)) {
1120                 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1121                        hdev->name, le16_to_cpu(cmd->opcode));
1122                 kfree_skb(skb);
1123                 return -EFAULT;
1124         }
1125         kfree_skb(skb);
1126
1127         return 0;
1128 }
1129
1130 static int btusb_setup_intel(struct hci_dev *hdev)
1131 {
1132         struct sk_buff *skb;
1133         const struct firmware *fw;
1134         const u8 *fw_ptr;
1135         int disable_patch;
1136         struct intel_version *ver;
1137
1138         const u8 mfg_enable[] = { 0x01, 0x00 };
1139         const u8 mfg_disable[] = { 0x00, 0x00 };
1140         const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
1141         const u8 mfg_reset_activate[] = { 0x00, 0x02 };
1142
1143         BT_DBG("%s", hdev->name);
1144
1145         /* The controller has a bug with the first HCI command sent to it
1146          * returning number of completed commands as zero. This would stall the
1147          * command processing in the Bluetooth core.
1148          *
1149          * As a workaround, send HCI Reset command first which will reset the
1150          * number of completed commands and allow normal command processing
1151          * from now on.
1152          */
1153         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1154         if (IS_ERR(skb)) {
1155                 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1156                        hdev->name, PTR_ERR(skb));
1157                 return PTR_ERR(skb);
1158         }
1159         kfree_skb(skb);
1160
1161         /* Read Intel specific controller version first to allow selection of
1162          * which firmware file to load.
1163          *
1164          * The returned information are hardware variant and revision plus
1165          * firmware variant, revision and build number.
1166          */
1167         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1168         if (IS_ERR(skb)) {
1169                 BT_ERR("%s reading Intel fw version command failed (%ld)",
1170                        hdev->name, PTR_ERR(skb));
1171                 return PTR_ERR(skb);
1172         }
1173
1174         if (skb->len != sizeof(*ver)) {
1175                 BT_ERR("%s Intel version event length mismatch", hdev->name);
1176                 kfree_skb(skb);
1177                 return -EIO;
1178         }
1179
1180         ver = (struct intel_version *)skb->data;
1181         if (ver->status) {
1182                 BT_ERR("%s Intel fw version event failed (%02x)", hdev->name,
1183                        ver->status);
1184                 kfree_skb(skb);
1185                 return -bt_to_errno(ver->status);
1186         }
1187
1188         BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1189                 hdev->name, ver->hw_platform, ver->hw_variant,
1190                 ver->hw_revision, ver->fw_variant,  ver->fw_revision,
1191                 ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
1192                 ver->fw_patch_num);
1193
1194         /* fw_patch_num indicates the version of patch the device currently
1195          * have. If there is no patch data in the device, it is always 0x00.
1196          * So, if it is other than 0x00, no need to patch the deivce again.
1197          */
1198         if (ver->fw_patch_num) {
1199                 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1200                         hdev->name, ver->fw_patch_num);
1201                 kfree_skb(skb);
1202                 return 0;
1203         }
1204
1205         /* Opens the firmware patch file based on the firmware version read
1206          * from the controller. If it fails to open the matching firmware
1207          * patch file, it tries to open the default firmware patch file.
1208          * If no patch file is found, allow the device to operate without
1209          * a patch.
1210          */
1211         fw = btusb_setup_intel_get_fw(hdev, ver);
1212         if (!fw) {
1213                 kfree_skb(skb);
1214                 return 0;
1215         }
1216         fw_ptr = fw->data;
1217
1218         /* This Intel specific command enables the manufacturer mode of the
1219          * controller.
1220          *
1221          * Only while this mode is enabled, the driver can download the
1222          * firmware patch data and configuration parameters.
1223          */
1224         skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
1225         if (IS_ERR(skb)) {
1226                 BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
1227                        hdev->name, PTR_ERR(skb));
1228                 release_firmware(fw);
1229                 return PTR_ERR(skb);
1230         }
1231
1232         if (skb->data[0]) {
1233                 u8 evt_status = skb->data[0];
1234                 BT_ERR("%s enable Intel manufacturer mode event failed (%02x)",
1235                        hdev->name, evt_status);
1236                 kfree_skb(skb);
1237                 release_firmware(fw);
1238                 return -bt_to_errno(evt_status);
1239         }
1240         kfree_skb(skb);
1241
1242         disable_patch = 1;
1243
1244         /* The firmware data file consists of list of Intel specific HCI
1245          * commands and its expected events. The first byte indicates the
1246          * type of the message, either HCI command or HCI event.
1247          *
1248          * It reads the command and its expected event from the firmware file,
1249          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1250          * the returned event is compared with the event read from the firmware
1251          * file and it will continue until all the messages are downloaded to
1252          * the controller.
1253          *
1254          * Once the firmware patching is completed successfully,
1255          * the manufacturer mode is disabled with reset and activating the
1256          * downloaded patch.
1257          *
1258          * If the firmware patching fails, the manufacturer mode is
1259          * disabled with reset and deactivating the patch.
1260          *
1261          * If the default patch file is used, no reset is done when disabling
1262          * the manufacturer.
1263          */
1264         while (fw->size > fw_ptr - fw->data) {
1265                 int ret;
1266
1267                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1268                                                  &disable_patch);
1269                 if (ret < 0)
1270                         goto exit_mfg_deactivate;
1271         }
1272
1273         release_firmware(fw);
1274
1275         if (disable_patch)
1276                 goto exit_mfg_disable;
1277
1278         /* Patching completed successfully and disable the manufacturer mode
1279          * with reset and activate the downloaded firmware patches.
1280          */
1281         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
1282                              mfg_reset_activate, HCI_INIT_TIMEOUT);
1283         if (IS_ERR(skb)) {
1284                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1285                        hdev->name, PTR_ERR(skb));
1286                 return PTR_ERR(skb);
1287         }
1288         kfree_skb(skb);
1289
1290         BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1291                 hdev->name);
1292
1293         return 0;
1294
1295 exit_mfg_disable:
1296         /* Disable the manufacturer mode without reset */
1297         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
1298                              HCI_INIT_TIMEOUT);
1299         if (IS_ERR(skb)) {
1300                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1301                        hdev->name, PTR_ERR(skb));
1302                 return PTR_ERR(skb);
1303         }
1304         kfree_skb(skb);
1305
1306         BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1307         return 0;
1308
1309 exit_mfg_deactivate:
1310         release_firmware(fw);
1311
1312         /* Patching failed. Disable the manufacturer mode with reset and
1313          * deactivate the downloaded firmware patches.
1314          */
1315         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
1316                              mfg_reset_deactivate, HCI_INIT_TIMEOUT);
1317         if (IS_ERR(skb)) {
1318                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1319                        hdev->name, PTR_ERR(skb));
1320                 return PTR_ERR(skb);
1321         }
1322         kfree_skb(skb);
1323
1324         BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1325                 hdev->name);
1326
1327         return 0;
1328 }
1329
1330 static int btusb_probe(struct usb_interface *intf,
1331                                 const struct usb_device_id *id)
1332 {
1333         struct usb_endpoint_descriptor *ep_desc;
1334         struct btusb_data *data;
1335         struct hci_dev *hdev;
1336         int i, err;
1337
1338         BT_DBG("intf %p id %p", intf, id);
1339
1340         /* interface numbers are hardcoded in the spec */
1341         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
1342                 return -ENODEV;
1343
1344         if (!id->driver_info) {
1345                 const struct usb_device_id *match;
1346                 match = usb_match_id(intf, blacklist_table);
1347                 if (match)
1348                         id = match;
1349         }
1350
1351         if (id->driver_info == BTUSB_IGNORE)
1352                 return -ENODEV;
1353
1354         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
1355                 return -ENODEV;
1356
1357         if (ignore_csr && id->driver_info & BTUSB_CSR)
1358                 return -ENODEV;
1359
1360         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
1361                 return -ENODEV;
1362
1363         if (id->driver_info & BTUSB_ATH3012) {
1364                 struct usb_device *udev = interface_to_usbdev(intf);
1365
1366                 /* Old firmware would otherwise let ath3k driver load
1367                  * patch and sysconfig files */
1368                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
1369                         return -ENODEV;
1370         }
1371
1372         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
1373         if (!data)
1374                 return -ENOMEM;
1375
1376         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1377                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1378
1379                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
1380                         data->intr_ep = ep_desc;
1381                         continue;
1382                 }
1383
1384                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
1385                         data->bulk_tx_ep = ep_desc;
1386                         continue;
1387                 }
1388
1389                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
1390                         data->bulk_rx_ep = ep_desc;
1391                         continue;
1392                 }
1393         }
1394
1395         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
1396                 return -ENODEV;
1397
1398         data->cmdreq_type = USB_TYPE_CLASS;
1399
1400         data->udev = interface_to_usbdev(intf);
1401         data->intf = intf;
1402
1403         spin_lock_init(&data->lock);
1404
1405         INIT_WORK(&data->work, btusb_work);
1406         INIT_WORK(&data->waker, btusb_waker);
1407         spin_lock_init(&data->txlock);
1408
1409         init_usb_anchor(&data->tx_anchor);
1410         init_usb_anchor(&data->intr_anchor);
1411         init_usb_anchor(&data->bulk_anchor);
1412         init_usb_anchor(&data->isoc_anchor);
1413         init_usb_anchor(&data->deferred);
1414
1415         hdev = hci_alloc_dev();
1416         if (!hdev)
1417                 return -ENOMEM;
1418
1419         hdev->bus = HCI_USB;
1420         hci_set_drvdata(hdev, data);
1421
1422         data->hdev = hdev;
1423
1424         SET_HCIDEV_DEV(hdev, &intf->dev);
1425
1426         hdev->open   = btusb_open;
1427         hdev->close  = btusb_close;
1428         hdev->flush  = btusb_flush;
1429         hdev->send   = btusb_send_frame;
1430         hdev->notify = btusb_notify;
1431
1432         if (id->driver_info & BTUSB_BCM92035)
1433                 hdev->setup = btusb_setup_bcm92035;
1434
1435         if (id->driver_info & BTUSB_INTEL)
1436                 hdev->setup = btusb_setup_intel;
1437
1438         /* Interface numbers are hardcoded in the specification */
1439         data->isoc = usb_ifnum_to_if(data->udev, 1);
1440
1441         if (!reset)
1442                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1443
1444         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1445                 if (!disable_scofix)
1446                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1447         }
1448
1449         if (id->driver_info & BTUSB_BROKEN_ISOC)
1450                 data->isoc = NULL;
1451
1452         if (id->driver_info & BTUSB_DIGIANSWER) {
1453                 data->cmdreq_type = USB_TYPE_VENDOR;
1454                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1455         }
1456
1457         if (id->driver_info & BTUSB_CSR) {
1458                 struct usb_device *udev = data->udev;
1459
1460                 /* Old firmware would otherwise execute USB reset */
1461                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1462                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1463         }
1464
1465         if (id->driver_info & BTUSB_SNIFFER) {
1466                 struct usb_device *udev = data->udev;
1467
1468                 /* New sniffer firmware has crippled HCI interface */
1469                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1470                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1471
1472                 data->isoc = NULL;
1473         }
1474
1475         if (data->isoc) {
1476                 err = usb_driver_claim_interface(&btusb_driver,
1477                                                         data->isoc, data);
1478                 if (err < 0) {
1479                         hci_free_dev(hdev);
1480                         return err;
1481                 }
1482         }
1483
1484         err = hci_register_dev(hdev);
1485         if (err < 0) {
1486                 hci_free_dev(hdev);
1487                 return err;
1488         }
1489
1490         usb_set_intfdata(intf, data);
1491
1492         return 0;
1493 }
1494
1495 static void btusb_disconnect(struct usb_interface *intf)
1496 {
1497         struct btusb_data *data = usb_get_intfdata(intf);
1498         struct hci_dev *hdev;
1499
1500         BT_DBG("intf %p", intf);
1501
1502         if (!data)
1503                 return;
1504
1505         hdev = data->hdev;
1506         usb_set_intfdata(data->intf, NULL);
1507
1508         if (data->isoc)
1509                 usb_set_intfdata(data->isoc, NULL);
1510
1511         hci_unregister_dev(hdev);
1512
1513         if (intf == data->isoc)
1514                 usb_driver_release_interface(&btusb_driver, data->intf);
1515         else if (data->isoc)
1516                 usb_driver_release_interface(&btusb_driver, data->isoc);
1517
1518         hci_free_dev(hdev);
1519 }
1520
1521 #ifdef CONFIG_PM
1522 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1523 {
1524         struct btusb_data *data = usb_get_intfdata(intf);
1525
1526         BT_DBG("intf %p", intf);
1527
1528         if (data->suspend_count++)
1529                 return 0;
1530
1531         spin_lock_irq(&data->txlock);
1532         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1533                 set_bit(BTUSB_SUSPENDING, &data->flags);
1534                 spin_unlock_irq(&data->txlock);
1535         } else {
1536                 spin_unlock_irq(&data->txlock);
1537                 data->suspend_count--;
1538                 return -EBUSY;
1539         }
1540
1541         cancel_work_sync(&data->work);
1542
1543         btusb_stop_traffic(data);
1544         usb_kill_anchored_urbs(&data->tx_anchor);
1545
1546         return 0;
1547 }
1548
1549 static void play_deferred(struct btusb_data *data)
1550 {
1551         struct urb *urb;
1552         int err;
1553
1554         while ((urb = usb_get_from_anchor(&data->deferred))) {
1555                 err = usb_submit_urb(urb, GFP_ATOMIC);
1556                 if (err < 0)
1557                         break;
1558
1559                 data->tx_in_flight++;
1560         }
1561         usb_scuttle_anchored_urbs(&data->deferred);
1562 }
1563
1564 static int btusb_resume(struct usb_interface *intf)
1565 {
1566         struct btusb_data *data = usb_get_intfdata(intf);
1567         struct hci_dev *hdev = data->hdev;
1568         int err = 0;
1569
1570         BT_DBG("intf %p", intf);
1571
1572         if (--data->suspend_count)
1573                 return 0;
1574
1575         if (!test_bit(HCI_RUNNING, &hdev->flags))
1576                 goto done;
1577
1578         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1579                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1580                 if (err < 0) {
1581                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1582                         goto failed;
1583                 }
1584         }
1585
1586         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1587                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1588                 if (err < 0) {
1589                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1590                         goto failed;
1591                 }
1592
1593                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1594         }
1595
1596         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1597                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1598                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1599                 else
1600                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1601         }
1602
1603         spin_lock_irq(&data->txlock);
1604         play_deferred(data);
1605         clear_bit(BTUSB_SUSPENDING, &data->flags);
1606         spin_unlock_irq(&data->txlock);
1607         schedule_work(&data->work);
1608
1609         return 0;
1610
1611 failed:
1612         usb_scuttle_anchored_urbs(&data->deferred);
1613 done:
1614         spin_lock_irq(&data->txlock);
1615         clear_bit(BTUSB_SUSPENDING, &data->flags);
1616         spin_unlock_irq(&data->txlock);
1617
1618         return err;
1619 }
1620 #endif
1621
1622 static struct usb_driver btusb_driver = {
1623         .name           = "btusb",
1624         .probe          = btusb_probe,
1625         .disconnect     = btusb_disconnect,
1626 #ifdef CONFIG_PM
1627         .suspend        = btusb_suspend,
1628         .resume         = btusb_resume,
1629 #endif
1630         .id_table       = btusb_table,
1631         .supports_autosuspend = 1,
1632         .disable_hub_initiated_lpm = 1,
1633 };
1634
1635 module_usb_driver(btusb_driver);
1636
1637 module_param(ignore_dga, bool, 0644);
1638 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1639
1640 module_param(ignore_csr, bool, 0644);
1641 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1642
1643 module_param(ignore_sniffer, bool, 0644);
1644 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1645
1646 module_param(disable_scofix, bool, 0644);
1647 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1648
1649 module_param(force_scofix, bool, 0644);
1650 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1651
1652 module_param(reset, bool, 0644);
1653 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1654
1655 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1656 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1657 MODULE_VERSION(VERSION);
1658 MODULE_LICENSE("GPL");