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, 0x311e), .driver_info = BTUSB_ATH3012 },
 148         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 149         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 150         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 151         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 152         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 153         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 154         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 155         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 156         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 157         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 158         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 159         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 160         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 161         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 162         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 163         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 164         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 165         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 166         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 167         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 168         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 169         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 170         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 171
 172         /* Atheros AR5BBU12 with sflash firmware */
 173         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 174
 175         /* Atheros AR5BBU12 with sflash firmware */
 176         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 177         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 178
 179         /* Broadcom BCM2035 */
 180         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 181         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 182         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 183
 184         /* Broadcom BCM2045 */
 185         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 186         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 187
 188         /* IBM/Lenovo ThinkPad with Broadcom chip */
 189         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 190         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 191
 192         /* HP laptop with Broadcom chip */
 193         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 194
 195         /* Dell laptop with Broadcom chip */
 196         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 197
 198         /* Dell Wireless 370 and 410 devices */
 199         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 200         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 201
 202         /* Belkin F8T012 and F8T013 devices */
 203         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 204         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 205
 206         /* Asus WL-BTD202 device */
 207         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 208
 209         /* Kensington Bluetooth USB adapter */
 210         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 211
 212         /* RTX Telecom based adapters with buggy SCO support */
 213         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 214         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 215
 216         /* CONWISE Technology based adapters with buggy SCO support */
 217         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 218
 219         /* Digianswer devices */
 220         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 221         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 222
 223         /* CSR BlueCore Bluetooth Sniffer */
 224         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
 225
 226         /* Frontline ComProbe Bluetooth Sniffer */
 227         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
 228
 229         /* Intel Bluetooth device */
 230         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 231         { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
 232
 233         { }     /* Terminating entry */
 234 };
 235
 236 #define BTUSB_MAX_ISOC_FRAMES   10
 237
 238 #define BTUSB_INTR_RUNNING      0
 239 #define BTUSB_BULK_RUNNING      1
 240 #define BTUSB_ISOC_RUNNING      2
 241 #define BTUSB_SUSPENDING        3
 242 #define BTUSB_DID_ISO_RESUME    4
 243
 244 struct btusb_data {
 245         struct hci_dev       *hdev;
 246         struct usb_device    *udev;
 247         struct usb_interface *intf;
 248         struct usb_interface *isoc;
 249
 250         spinlock_t lock;
 251
 252         unsigned long flags;
 253
 254         struct work_struct work;
 255         struct work_struct waker;
 256
 257         struct usb_anchor tx_anchor;
 258         struct usb_anchor intr_anchor;
 259         struct usb_anchor bulk_anchor;
 260         struct usb_anchor isoc_anchor;
 261         struct usb_anchor deferred;
 262         int tx_in_flight;
 263         spinlock_t txlock;
 264
 265         struct usb_endpoint_descriptor *intr_ep;
 266         struct usb_endpoint_descriptor *bulk_tx_ep;
 267         struct usb_endpoint_descriptor *bulk_rx_ep;
 268         struct usb_endpoint_descriptor *isoc_tx_ep;
 269         struct usb_endpoint_descriptor *isoc_rx_ep;
 270
 271         __u8 cmdreq_type;
 272
 273         unsigned int sco_num;
 274         int isoc_altsetting;
 275         int suspend_count;
 276 };
 277
 278 static int inc_tx(struct btusb_data *data)
 279 {
 280         unsigned long flags;
 281         int rv;
 282
 283         spin_lock_irqsave(&data->txlock, flags);
 284         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
 285         if (!rv)
 286                 data->tx_in_flight++;
 287         spin_unlock_irqrestore(&data->txlock, flags);
 288
 289         return rv;
 290 }
 291
 292 static void btusb_intr_complete(struct urb *urb)
 293 {
 294         struct hci_dev *hdev = urb->context;
 295         struct btusb_data *data = hci_get_drvdata(hdev);
 296         int err;
 297
 298         BT_DBG("%s urb %p status %d count %d", hdev->name,
 299                                         urb, urb->status, urb->actual_length);
 300
 301         if (!test_bit(HCI_RUNNING, &hdev->flags))
 302                 return;
 303
 304         if (urb->status == 0) {
 305                 hdev->stat.byte_rx += urb->actual_length;
 306
 307                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
 308                                                 urb->transfer_buffer,
 309                                                 urb->actual_length) < 0) {
 310                         BT_ERR("%s corrupted event packet", hdev->name);
 311                         hdev->stat.err_rx++;
 312                 }
 313         }
 314
 315         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 316                 return;
 317
 318         usb_mark_last_busy(data->udev);
 319         usb_anchor_urb(urb, &data->intr_anchor);
 320
 321         err = usb_submit_urb(urb, GFP_ATOMIC);
 322         if (err < 0) {
 323                 /* -EPERM: urb is being killed;
 324                  * -ENODEV: device got disconnected */
 325                 if (err != -EPERM && err != -ENODEV)
 326                         BT_ERR("%s urb %p failed to resubmit (%d)",
 327                                                 hdev->name, urb, -err);
 328                 usb_unanchor_urb(urb);
 329         }
 330 }
 331
 332 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 333 {
 334         struct btusb_data *data = hci_get_drvdata(hdev);
 335         struct urb *urb;
 336         unsigned char *buf;
 337         unsigned int pipe;
 338         int err, size;
 339
 340         BT_DBG("%s", hdev->name);
 341
 342         if (!data->intr_ep)
 343                 return -ENODEV;
 344
 345         urb = usb_alloc_urb(0, mem_flags);
 346         if (!urb)
 347                 return -ENOMEM;
 348
 349         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 350
 351         buf = kmalloc(size, mem_flags);
 352         if (!buf) {
 353                 usb_free_urb(urb);
 354                 return -ENOMEM;
 355         }
 356
 357         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 358
 359         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 360                                                 btusb_intr_complete, hdev,
 361                                                 data->intr_ep->bInterval);
 362
 363         urb->transfer_flags |= URB_FREE_BUFFER;
 364
 365         usb_anchor_urb(urb, &data->intr_anchor);
 366
 367         err = usb_submit_urb(urb, mem_flags);
 368         if (err < 0) {
 369                 if (err != -EPERM && err != -ENODEV)
 370                         BT_ERR("%s urb %p submission failed (%d)",
 371                                                 hdev->name, urb, -err);
 372                 usb_unanchor_urb(urb);
 373         }
 374
 375         usb_free_urb(urb);
 376
 377         return err;
 378 }
 379
 380 static void btusb_bulk_complete(struct urb *urb)
 381 {
 382         struct hci_dev *hdev = urb->context;
 383         struct btusb_data *data = hci_get_drvdata(hdev);
 384         int err;
 385
 386         BT_DBG("%s urb %p status %d count %d", hdev->name,
 387                                         urb, urb->status, urb->actual_length);
 388
 389         if (!test_bit(HCI_RUNNING, &hdev->flags))
 390                 return;
 391
 392         if (urb->status == 0) {
 393                 hdev->stat.byte_rx += urb->actual_length;
 394
 395                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
 396                                                 urb->transfer_buffer,
 397                                                 urb->actual_length) < 0) {
 398                         BT_ERR("%s corrupted ACL packet", hdev->name);
 399                         hdev->stat.err_rx++;
 400                 }
 401         }
 402
 403         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 404                 return;
 405
 406         usb_anchor_urb(urb, &data->bulk_anchor);
 407         usb_mark_last_busy(data->udev);
 408
 409         err = usb_submit_urb(urb, GFP_ATOMIC);
 410         if (err < 0) {
 411                 /* -EPERM: urb is being killed;
 412                  * -ENODEV: device got disconnected */
 413                 if (err != -EPERM && err != -ENODEV)
 414                         BT_ERR("%s urb %p failed to resubmit (%d)",
 415                                                 hdev->name, urb, -err);
 416                 usb_unanchor_urb(urb);
 417         }
 418 }
 419
 420 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 421 {
 422         struct btusb_data *data = hci_get_drvdata(hdev);
 423         struct urb *urb;
 424         unsigned char *buf;
 425         unsigned int pipe;
 426         int err, size = HCI_MAX_FRAME_SIZE;
 427
 428         BT_DBG("%s", hdev->name);
 429
 430         if (!data->bulk_rx_ep)
 431                 return -ENODEV;
 432
 433         urb = usb_alloc_urb(0, mem_flags);
 434         if (!urb)
 435                 return -ENOMEM;
 436
 437         buf = kmalloc(size, mem_flags);
 438         if (!buf) {
 439                 usb_free_urb(urb);
 440                 return -ENOMEM;
 441         }
 442
 443         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 444
 445         usb_fill_bulk_urb(urb, data->udev, pipe,
 446                                         buf, size, btusb_bulk_complete, hdev);
 447
 448         urb->transfer_flags |= URB_FREE_BUFFER;
 449
 450         usb_mark_last_busy(data->udev);
 451         usb_anchor_urb(urb, &data->bulk_anchor);
 452
 453         err = usb_submit_urb(urb, mem_flags);
 454         if (err < 0) {
 455                 if (err != -EPERM && err != -ENODEV)
 456                         BT_ERR("%s urb %p submission failed (%d)",
 457                                                 hdev->name, urb, -err);
 458                 usb_unanchor_urb(urb);
 459         }
 460
 461         usb_free_urb(urb);
 462
 463         return err;
 464 }
 465
 466 static void btusb_isoc_complete(struct urb *urb)
 467 {
 468         struct hci_dev *hdev = urb->context;
 469         struct btusb_data *data = hci_get_drvdata(hdev);
 470         int i, err;
 471
 472         BT_DBG("%s urb %p status %d count %d", hdev->name,
 473                                         urb, urb->status, urb->actual_length);
 474
 475         if (!test_bit(HCI_RUNNING, &hdev->flags))
 476                 return;
 477
 478         if (urb->status == 0) {
 479                 for (i = 0; i < urb->number_of_packets; i++) {
 480                         unsigned int offset = urb->iso_frame_desc[i].offset;
 481                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 482
 483                         if (urb->iso_frame_desc[i].status)
 484                                 continue;
 485
 486                         hdev->stat.byte_rx += length;
 487
 488                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
 489                                                 urb->transfer_buffer + offset,
 490                                                                 length) < 0) {
 491                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 492                                 hdev->stat.err_rx++;
 493                         }
 494                 }
 495         }
 496
 497         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 498                 return;
 499
 500         usb_anchor_urb(urb, &data->isoc_anchor);
 501
 502         err = usb_submit_urb(urb, GFP_ATOMIC);
 503         if (err < 0) {
 504                 /* -EPERM: urb is being killed;
 505                  * -ENODEV: device got disconnected */
 506                 if (err != -EPERM && err != -ENODEV)
 507                         BT_ERR("%s urb %p failed to resubmit (%d)",
 508                                                 hdev->name, urb, -err);
 509                 usb_unanchor_urb(urb);
 510         }
 511 }
 512
 513 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 514 {
 515         int i, offset = 0;
 516
 517         BT_DBG("len %d mtu %d", len, mtu);
 518
 519         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 520                                         i++, offset += mtu, len -= mtu) {
 521                 urb->iso_frame_desc[i].offset = offset;
 522                 urb->iso_frame_desc[i].length = mtu;
 523         }
 524
 525         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 526                 urb->iso_frame_desc[i].offset = offset;
 527                 urb->iso_frame_desc[i].length = len;
 528                 i++;
 529         }
 530
 531         urb->number_of_packets = i;
 532 }
 533
 534 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 535 {
 536         struct btusb_data *data = hci_get_drvdata(hdev);
 537         struct urb *urb;
 538         unsigned char *buf;
 539         unsigned int pipe;
 540         int err, size;
 541
 542         BT_DBG("%s", hdev->name);
 543
 544         if (!data->isoc_rx_ep)
 545                 return -ENODEV;
 546
 547         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 548         if (!urb)
 549                 return -ENOMEM;
 550
 551         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 552                                                 BTUSB_MAX_ISOC_FRAMES;
 553
 554         buf = kmalloc(size, mem_flags);
 555         if (!buf) {
 556                 usb_free_urb(urb);
 557                 return -ENOMEM;
 558         }
 559
 560         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 561
 562         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 563                                 hdev, data->isoc_rx_ep->bInterval);
 564
 565         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
 566
 567         __fill_isoc_descriptor(urb, size,
 568                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 569
 570         usb_anchor_urb(urb, &data->isoc_anchor);
 571
 572         err = usb_submit_urb(urb, mem_flags);
 573         if (err < 0) {
 574                 if (err != -EPERM && err != -ENODEV)
 575                         BT_ERR("%s urb %p submission failed (%d)",
 576                                                 hdev->name, urb, -err);
 577                 usb_unanchor_urb(urb);
 578         }
 579
 580         usb_free_urb(urb);
 581
 582         return err;
 583 }
 584
 585 static void btusb_tx_complete(struct urb *urb)
 586 {
 587         struct sk_buff *skb = urb->context;
 588         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 589         struct btusb_data *data = hci_get_drvdata(hdev);
 590
 591         BT_DBG("%s urb %p status %d count %d", hdev->name,
 592                                         urb, urb->status, urb->actual_length);
 593
 594         if (!test_bit(HCI_RUNNING, &hdev->flags))
 595                 goto done;
 596
 597         if (!urb->status)
 598                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 599         else
 600                 hdev->stat.err_tx++;
 601
 602 done:
 603         spin_lock(&data->txlock);
 604         data->tx_in_flight--;
 605         spin_unlock(&data->txlock);
 606
 607         kfree(urb->setup_packet);
 608
 609         kfree_skb(skb);
 610 }
 611
 612 static void btusb_isoc_tx_complete(struct urb *urb)
 613 {
 614         struct sk_buff *skb = urb->context;
 615         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 616
 617         BT_DBG("%s urb %p status %d count %d", hdev->name,
 618                                         urb, urb->status, urb->actual_length);
 619
 620         if (!test_bit(HCI_RUNNING, &hdev->flags))
 621                 goto done;
 622
 623         if (!urb->status)
 624                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 625         else
 626                 hdev->stat.err_tx++;
 627
 628 done:
 629         kfree(urb->setup_packet);
 630
 631         kfree_skb(skb);
 632 }
 633
 634 static int btusb_open(struct hci_dev *hdev)
 635 {
 636         struct btusb_data *data = hci_get_drvdata(hdev);
 637         int err;
 638
 639         BT_DBG("%s", hdev->name);
 640
 641         err = usb_autopm_get_interface(data->intf);
 642         if (err < 0)
 643                 return err;
 644
 645         data->intf->needs_remote_wakeup = 1;
 646
 647         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 648                 goto done;
 649
 650         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 651                 goto done;
 652
 653         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 654         if (err < 0)
 655                 goto failed;
 656
 657         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 658         if (err < 0) {
 659                 usb_kill_anchored_urbs(&data->intr_anchor);
 660                 goto failed;
 661         }
 662
 663         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 664         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 665
 666 done:
 667         usb_autopm_put_interface(data->intf);
 668         return 0;
 669
 670 failed:
 671         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 672         clear_bit(HCI_RUNNING, &hdev->flags);
 673         usb_autopm_put_interface(data->intf);
 674         return err;
 675 }
 676
 677 static void btusb_stop_traffic(struct btusb_data *data)
 678 {
 679         usb_kill_anchored_urbs(&data->intr_anchor);
 680         usb_kill_anchored_urbs(&data->bulk_anchor);
 681         usb_kill_anchored_urbs(&data->isoc_anchor);
 682 }
 683
 684 static int btusb_close(struct hci_dev *hdev)
 685 {
 686         struct btusb_data *data = hci_get_drvdata(hdev);
 687         int err;
 688
 689         BT_DBG("%s", hdev->name);
 690
 691         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 692                 return 0;
 693
 694         cancel_work_sync(&data->work);
 695         cancel_work_sync(&data->waker);
 696
 697         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 698         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 699         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 700
 701         btusb_stop_traffic(data);
 702         err = usb_autopm_get_interface(data->intf);
 703         if (err < 0)
 704                 goto failed;
 705
 706         data->intf->needs_remote_wakeup = 0;
 707         usb_autopm_put_interface(data->intf);
 708
 709 failed:
 710         usb_scuttle_anchored_urbs(&data->deferred);
 711         return 0;
 712 }
 713
 714 static int btusb_flush(struct hci_dev *hdev)
 715 {
 716         struct btusb_data *data = hci_get_drvdata(hdev);
 717
 718         BT_DBG("%s", hdev->name);
 719
 720         usb_kill_anchored_urbs(&data->tx_anchor);
 721
 722         return 0;
 723 }
 724
 725 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
 726 {
 727         struct btusb_data *data = hci_get_drvdata(hdev);
 728         struct usb_ctrlrequest *dr;
 729         struct urb *urb;
 730         unsigned int pipe;
 731         int err;
 732
 733         BT_DBG("%s", hdev->name);
 734
 735         if (!test_bit(HCI_RUNNING, &hdev->flags))
 736                 return -EBUSY;
 737
 738         skb->dev = (void *) hdev;
 739
 740         switch (bt_cb(skb)->pkt_type) {
 741         case HCI_COMMAND_PKT:
 742                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 743                 if (!urb)
 744                         return -ENOMEM;
 745
 746                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
 747                 if (!dr) {
 748                         usb_free_urb(urb);
 749                         return -ENOMEM;
 750                 }
 751
 752                 dr->bRequestType = data->cmdreq_type;
 753                 dr->bRequest     = 0;
 754                 dr->wIndex       = 0;
 755                 dr->wValue       = 0;
 756                 dr->wLength      = __cpu_to_le16(skb->len);
 757
 758                 pipe = usb_sndctrlpipe(data->udev, 0x00);
 759
 760                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
 761                                 skb->data, skb->len, btusb_tx_complete, skb);
 762
 763                 hdev->stat.cmd_tx++;
 764                 break;
 765
 766         case HCI_ACLDATA_PKT:
 767                 if (!data->bulk_tx_ep)
 768                         return -ENODEV;
 769
 770                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 771                 if (!urb)
 772                         return -ENOMEM;
 773
 774                 pipe = usb_sndbulkpipe(data->udev,
 775                                         data->bulk_tx_ep->bEndpointAddress);
 776
 777                 usb_fill_bulk_urb(urb, data->udev, pipe,
 778                                 skb->data, skb->len, btusb_tx_complete, skb);
 779
 780                 hdev->stat.acl_tx++;
 781                 break;
 782
 783         case HCI_SCODATA_PKT:
 784                 if (!data->isoc_tx_ep || hci_conn_num(hdev, SCO_LINK) < 1)
 785                         return -ENODEV;
 786
 787                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
 788                 if (!urb)
 789                         return -ENOMEM;
 790
 791                 pipe = usb_sndisocpipe(data->udev,
 792                                         data->isoc_tx_ep->bEndpointAddress);
 793
 794                 usb_fill_int_urb(urb, data->udev, pipe,
 795                                 skb->data, skb->len, btusb_isoc_tx_complete,
 796                                 skb, data->isoc_tx_ep->bInterval);
 797
 798                 urb->transfer_flags  = URB_ISO_ASAP;
 799
 800                 __fill_isoc_descriptor(urb, skb->len,
 801                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 802
 803                 hdev->stat.sco_tx++;
 804                 goto skip_waking;
 805
 806         default:
 807                 return -EILSEQ;
 808         }
 809
 810         err = inc_tx(data);
 811         if (err) {
 812                 usb_anchor_urb(urb, &data->deferred);
 813                 schedule_work(&data->waker);
 814                 err = 0;
 815                 goto done;
 816         }
 817
 818 skip_waking:
 819         usb_anchor_urb(urb, &data->tx_anchor);
 820
 821         err = usb_submit_urb(urb, GFP_ATOMIC);
 822         if (err < 0) {
 823                 if (err != -EPERM && err != -ENODEV)
 824                         BT_ERR("%s urb %p submission failed (%d)",
 825                                                 hdev->name, urb, -err);
 826                 kfree(urb->setup_packet);
 827                 usb_unanchor_urb(urb);
 828         } else {
 829                 usb_mark_last_busy(data->udev);
 830         }
 831
 832 done:
 833         usb_free_urb(urb);
 834         return err;
 835 }
 836
 837 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 838 {
 839         struct btusb_data *data = hci_get_drvdata(hdev);
 840
 841         BT_DBG("%s evt %d", hdev->name, evt);
 842
 843         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
 844                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
 845                 schedule_work(&data->work);
 846         }
 847 }
 848
 849 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
 850 {
 851         struct btusb_data *data = hci_get_drvdata(hdev);
 852         struct usb_interface *intf = data->isoc;
 853         struct usb_endpoint_descriptor *ep_desc;
 854         int i, err;
 855
 856         if (!data->isoc)
 857                 return -ENODEV;
 858
 859         err = usb_set_interface(data->udev, 1, altsetting);
 860         if (err < 0) {
 861                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
 862                 return err;
 863         }
 864
 865         data->isoc_altsetting = altsetting;
 866
 867         data->isoc_tx_ep = NULL;
 868         data->isoc_rx_ep = NULL;
 869
 870         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 871                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 872
 873                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
 874                         data->isoc_tx_ep = ep_desc;
 875                         continue;
 876                 }
 877
 878                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
 879                         data->isoc_rx_ep = ep_desc;
 880                         continue;
 881                 }
 882         }
 883
 884         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
 885                 BT_ERR("%s invalid SCO descriptors", hdev->name);
 886                 return -ENODEV;
 887         }
 888
 889         return 0;
 890 }
 891
 892 static void btusb_work(struct work_struct *work)
 893 {
 894         struct btusb_data *data = container_of(work, struct btusb_data, work);
 895         struct hci_dev *hdev = data->hdev;
 896         int new_alts;
 897         int err;
 898
 899         if (data->sco_num > 0) {
 900                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
 901                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
 902                         if (err < 0) {
 903                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 904                                 usb_kill_anchored_urbs(&data->isoc_anchor);
 905                                 return;
 906                         }
 907
 908                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
 909                 }
 910
 911                 if (hdev->voice_setting & 0x0020) {
 912                         static const int alts[3] = { 2, 4, 5 };
 913                         new_alts = alts[data->sco_num - 1];
 914                 } else {
 915                         new_alts = data->sco_num;
 916                 }
 917
 918                 if (data->isoc_altsetting != new_alts) {
 919                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 920                         usb_kill_anchored_urbs(&data->isoc_anchor);
 921
 922                         if (__set_isoc_interface(hdev, new_alts) < 0)
 923                                 return;
 924                 }
 925
 926                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
 927                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
 928                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 929                         else
 930                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
 931                 }
 932         } else {
 933                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 934                 usb_kill_anchored_urbs(&data->isoc_anchor);
 935
 936                 __set_isoc_interface(hdev, 0);
 937                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
 938                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
 939         }
 940 }
 941
 942 static void btusb_waker(struct work_struct *work)
 943 {
 944         struct btusb_data *data = container_of(work, struct btusb_data, waker);
 945         int err;
 946
 947         err = usb_autopm_get_interface(data->intf);
 948         if (err < 0)
 949                 return;
 950
 951         usb_autopm_put_interface(data->intf);
 952 }
 953
 954 static int btusb_setup_bcm92035(struct hci_dev *hdev)
 955 {
 956         struct sk_buff *skb;
 957         u8 val = 0x00;
 958
 959         BT_DBG("%s", hdev->name);
 960
 961         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
 962         if (IS_ERR(skb))
 963                 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
 964         else
 965                 kfree_skb(skb);
 966
 967         return 0;
 968 }
 969
 970 static int btusb_setup_csr(struct hci_dev *hdev)
 971 {
 972         struct hci_rp_read_local_version *rp;
 973         struct sk_buff *skb;
 974         int ret;
 975
 976         BT_DBG("%s", hdev->name);
 977
 978         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
 979                              HCI_INIT_TIMEOUT);
 980         if (IS_ERR(skb)) {
 981                 BT_ERR("Reading local version failed (%ld)", -PTR_ERR(skb));
 982                 return -PTR_ERR(skb);
 983         }
 984
 985         rp = (struct hci_rp_read_local_version *) skb->data;
 986
 987         if (!rp->status) {
 988                 if (le16_to_cpu(rp->manufacturer) != 10) {
 989                         /* Clear the reset quirk since this is not an actual
 990                          * early Bluetooth 1.1 device from CSR.
 991                          */
 992                         clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
 993
 994                         /* These fake CSR controllers have all a broken
 995                          * stored link key handling and so just disable it.
 996                          */
 997                         set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY,
 998                                 &hdev->quirks);
 999                 }
1000         }
1001
1002         ret = -bt_to_errno(rp->status);
1003
1004         kfree_skb(skb);
1005
1006         return ret;
1007 }
1008
1009 struct intel_version {
1010         u8 status;
1011         u8 hw_platform;
1012         u8 hw_variant;
1013         u8 hw_revision;
1014         u8 fw_variant;
1015         u8 fw_revision;
1016         u8 fw_build_num;
1017         u8 fw_build_ww;
1018         u8 fw_build_yy;
1019         u8 fw_patch_num;
1020 } __packed;
1021
1022 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1023                                                 struct intel_version *ver)
1024 {
1025         const struct firmware *fw;
1026         char fwname[64];
1027         int ret;
1028
1029         snprintf(fwname, sizeof(fwname),
1030                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1031                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
1032                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1033                  ver->fw_build_ww, ver->fw_build_yy);
1034
1035         ret = request_firmware(&fw, fwname, &hdev->dev);
1036         if (ret < 0) {
1037                 if (ret == -EINVAL) {
1038                         BT_ERR("%s Intel firmware file request failed (%d)",
1039                                hdev->name, ret);
1040                         return NULL;
1041                 }
1042
1043                 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1044                        hdev->name, fwname, ret);
1045
1046                 /* If the correct firmware patch file is not found, use the
1047                  * default firmware patch file instead
1048                  */
1049                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1050                          ver->hw_platform, ver->hw_variant);
1051                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1052                         BT_ERR("%s failed to open default Intel fw file: %s",
1053                                hdev->name, fwname);
1054                         return NULL;
1055                 }
1056         }
1057
1058         BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1059
1060         return fw;
1061 }
1062
1063 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1064                                       const struct firmware *fw,
1065                                       const u8 **fw_ptr, int *disable_patch)
1066 {
1067         struct sk_buff *skb;
1068         struct hci_command_hdr *cmd;
1069         const u8 *cmd_param;
1070         struct hci_event_hdr *evt = NULL;
1071         const u8 *evt_param = NULL;
1072         int remain = fw->size - (*fw_ptr - fw->data);
1073
1074         /* The first byte indicates the types of the patch command or event.
1075          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1076          * in the current firmware buffer doesn't start with 0x01 or
1077          * the size of remain buffer is smaller than HCI command header,
1078          * the firmware file is corrupted and it should stop the patching
1079          * process.
1080          */
1081         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1082                 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1083                 return -EINVAL;
1084         }
1085         (*fw_ptr)++;
1086         remain--;
1087
1088         cmd = (struct hci_command_hdr *)(*fw_ptr);
1089         *fw_ptr += sizeof(*cmd);
1090         remain -= sizeof(*cmd);
1091
1092         /* Ensure that the remain firmware data is long enough than the length
1093          * of command parameter. If not, the firmware file is corrupted.
1094          */
1095         if (remain < cmd->plen) {
1096                 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1097                 return -EFAULT;
1098         }
1099
1100         /* If there is a command that loads a patch in the firmware
1101          * file, then enable the patch upon success, otherwise just
1102          * disable the manufacturer mode, for example patch activation
1103          * is not required when the default firmware patch file is used
1104          * because there are no patch data to load.
1105          */
1106         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1107                 *disable_patch = 0;
1108
1109         cmd_param = *fw_ptr;
1110         *fw_ptr += cmd->plen;
1111         remain -= cmd->plen;
1112
1113         /* This reads the expected events when the above command is sent to the
1114          * device. Some vendor commands expects more than one events, for
1115          * example command status event followed by vendor specific event.
1116          * For this case, it only keeps the last expected event. so the command
1117          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1118          * last expected event.
1119          */
1120         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1121                 (*fw_ptr)++;
1122                 remain--;
1123
1124                 evt = (struct hci_event_hdr *)(*fw_ptr);
1125                 *fw_ptr += sizeof(*evt);
1126                 remain -= sizeof(*evt);
1127
1128                 if (remain < evt->plen) {
1129                         BT_ERR("%s Intel fw corrupted: invalid evt len",
1130                                hdev->name);
1131                         return -EFAULT;
1132                 }
1133
1134                 evt_param = *fw_ptr;
1135                 *fw_ptr += evt->plen;
1136                 remain -= evt->plen;
1137         }
1138
1139         /* Every HCI commands in the firmware file has its correspond event.
1140          * If event is not found or remain is smaller than zero, the firmware
1141          * file is corrupted.
1142          */
1143         if (!evt || !evt_param || remain < 0) {
1144                 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1145                 return -EFAULT;
1146         }
1147
1148         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1149                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1150         if (IS_ERR(skb)) {
1151                 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1152                        hdev->name, cmd->opcode, PTR_ERR(skb));
1153                 return PTR_ERR(skb);
1154         }
1155
1156         /* It ensures that the returned event matches the event data read from
1157          * the firmware file. At fist, it checks the length and then
1158          * the contents of the event.
1159          */
1160         if (skb->len != evt->plen) {
1161                 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1162                        le16_to_cpu(cmd->opcode));
1163                 kfree_skb(skb);
1164                 return -EFAULT;
1165         }
1166
1167         if (memcmp(skb->data, evt_param, evt->plen)) {
1168                 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1169                        hdev->name, le16_to_cpu(cmd->opcode));
1170                 kfree_skb(skb);
1171                 return -EFAULT;
1172         }
1173         kfree_skb(skb);
1174
1175         return 0;
1176 }
1177
1178 static int btusb_setup_intel(struct hci_dev *hdev)
1179 {
1180         struct sk_buff *skb;
1181         const struct firmware *fw;
1182         const u8 *fw_ptr;
1183         int disable_patch;
1184         struct intel_version *ver;
1185
1186         const u8 mfg_enable[] = { 0x01, 0x00 };
1187         const u8 mfg_disable[] = { 0x00, 0x00 };
1188         const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
1189         const u8 mfg_reset_activate[] = { 0x00, 0x02 };
1190
1191         BT_DBG("%s", hdev->name);
1192
1193         /* The controller has a bug with the first HCI command sent to it
1194          * returning number of completed commands as zero. This would stall the
1195          * command processing in the Bluetooth core.
1196          *
1197          * As a workaround, send HCI Reset command first which will reset the
1198          * number of completed commands and allow normal command processing
1199          * from now on.
1200          */
1201         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1202         if (IS_ERR(skb)) {
1203                 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1204                        hdev->name, PTR_ERR(skb));
1205                 return PTR_ERR(skb);
1206         }
1207         kfree_skb(skb);
1208
1209         /* Read Intel specific controller version first to allow selection of
1210          * which firmware file to load.
1211          *
1212          * The returned information are hardware variant and revision plus
1213          * firmware variant, revision and build number.
1214          */
1215         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1216         if (IS_ERR(skb)) {
1217                 BT_ERR("%s reading Intel fw version command failed (%ld)",
1218                        hdev->name, PTR_ERR(skb));
1219                 return PTR_ERR(skb);
1220         }
1221
1222         if (skb->len != sizeof(*ver)) {
1223                 BT_ERR("%s Intel version event length mismatch", hdev->name);
1224                 kfree_skb(skb);
1225                 return -EIO;
1226         }
1227
1228         ver = (struct intel_version *)skb->data;
1229         if (ver->status) {
1230                 BT_ERR("%s Intel fw version event failed (%02x)", hdev->name,
1231                        ver->status);
1232                 kfree_skb(skb);
1233                 return -bt_to_errno(ver->status);
1234         }
1235
1236         BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1237                 hdev->name, ver->hw_platform, ver->hw_variant,
1238                 ver->hw_revision, ver->fw_variant,  ver->fw_revision,
1239                 ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
1240                 ver->fw_patch_num);
1241
1242         /* fw_patch_num indicates the version of patch the device currently
1243          * have. If there is no patch data in the device, it is always 0x00.
1244          * So, if it is other than 0x00, no need to patch the deivce again.
1245          */
1246         if (ver->fw_patch_num) {
1247                 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1248                         hdev->name, ver->fw_patch_num);
1249                 kfree_skb(skb);
1250                 return 0;
1251         }
1252
1253         /* Opens the firmware patch file based on the firmware version read
1254          * from the controller. If it fails to open the matching firmware
1255          * patch file, it tries to open the default firmware patch file.
1256          * If no patch file is found, allow the device to operate without
1257          * a patch.
1258          */
1259         fw = btusb_setup_intel_get_fw(hdev, ver);
1260         if (!fw) {
1261                 kfree_skb(skb);
1262                 return 0;
1263         }
1264         fw_ptr = fw->data;
1265
1266         /* This Intel specific command enables the manufacturer mode of the
1267          * controller.
1268          *
1269          * Only while this mode is enabled, the driver can download the
1270          * firmware patch data and configuration parameters.
1271          */
1272         skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
1273         if (IS_ERR(skb)) {
1274                 BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
1275                        hdev->name, PTR_ERR(skb));
1276                 release_firmware(fw);
1277                 return PTR_ERR(skb);
1278         }
1279
1280         if (skb->data[0]) {
1281                 u8 evt_status = skb->data[0];
1282                 BT_ERR("%s enable Intel manufacturer mode event failed (%02x)",
1283                        hdev->name, evt_status);
1284                 kfree_skb(skb);
1285                 release_firmware(fw);
1286                 return -bt_to_errno(evt_status);
1287         }
1288         kfree_skb(skb);
1289
1290         disable_patch = 1;
1291
1292         /* The firmware data file consists of list of Intel specific HCI
1293          * commands and its expected events. The first byte indicates the
1294          * type of the message, either HCI command or HCI event.
1295          *
1296          * It reads the command and its expected event from the firmware file,
1297          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1298          * the returned event is compared with the event read from the firmware
1299          * file and it will continue until all the messages are downloaded to
1300          * the controller.
1301          *
1302          * Once the firmware patching is completed successfully,
1303          * the manufacturer mode is disabled with reset and activating the
1304          * downloaded patch.
1305          *
1306          * If the firmware patching fails, the manufacturer mode is
1307          * disabled with reset and deactivating the patch.
1308          *
1309          * If the default patch file is used, no reset is done when disabling
1310          * the manufacturer.
1311          */
1312         while (fw->size > fw_ptr - fw->data) {
1313                 int ret;
1314
1315                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1316                                                  &disable_patch);
1317                 if (ret < 0)
1318                         goto exit_mfg_deactivate;
1319         }
1320
1321         release_firmware(fw);
1322
1323         if (disable_patch)
1324                 goto exit_mfg_disable;
1325
1326         /* Patching completed successfully and disable the manufacturer mode
1327          * with reset and activate the downloaded firmware patches.
1328          */
1329         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
1330                              mfg_reset_activate, HCI_INIT_TIMEOUT);
1331         if (IS_ERR(skb)) {
1332                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1333                        hdev->name, PTR_ERR(skb));
1334                 return PTR_ERR(skb);
1335         }
1336         kfree_skb(skb);
1337
1338         BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1339                 hdev->name);
1340
1341         return 0;
1342
1343 exit_mfg_disable:
1344         /* Disable the manufacturer mode without reset */
1345         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
1346                              HCI_INIT_TIMEOUT);
1347         if (IS_ERR(skb)) {
1348                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1349                        hdev->name, PTR_ERR(skb));
1350                 return PTR_ERR(skb);
1351         }
1352         kfree_skb(skb);
1353
1354         BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1355         return 0;
1356
1357 exit_mfg_deactivate:
1358         release_firmware(fw);
1359
1360         /* Patching failed. Disable the manufacturer mode with reset and
1361          * deactivate the downloaded firmware patches.
1362          */
1363         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
1364                              mfg_reset_deactivate, HCI_INIT_TIMEOUT);
1365         if (IS_ERR(skb)) {
1366                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1367                        hdev->name, PTR_ERR(skb));
1368                 return PTR_ERR(skb);
1369         }
1370         kfree_skb(skb);
1371
1372         BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1373                 hdev->name);
1374
1375         return 0;
1376 }
1377
1378 static int btusb_probe(struct usb_interface *intf,
1379                                 const struct usb_device_id *id)
1380 {
1381         struct usb_endpoint_descriptor *ep_desc;
1382         struct btusb_data *data;
1383         struct hci_dev *hdev;
1384         int i, err;
1385
1386         BT_DBG("intf %p id %p", intf, id);
1387
1388         /* interface numbers are hardcoded in the spec */
1389         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
1390                 return -ENODEV;
1391
1392         if (!id->driver_info) {
1393                 const struct usb_device_id *match;
1394                 match = usb_match_id(intf, blacklist_table);
1395                 if (match)
1396                         id = match;
1397         }
1398
1399         if (id->driver_info == BTUSB_IGNORE)
1400                 return -ENODEV;
1401
1402         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
1403                 return -ENODEV;
1404
1405         if (ignore_csr && id->driver_info & BTUSB_CSR)
1406                 return -ENODEV;
1407
1408         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
1409                 return -ENODEV;
1410
1411         if (id->driver_info & BTUSB_ATH3012) {
1412                 struct usb_device *udev = interface_to_usbdev(intf);
1413
1414                 /* Old firmware would otherwise let ath3k driver load
1415                  * patch and sysconfig files */
1416                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
1417                         return -ENODEV;
1418         }
1419
1420         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
1421         if (!data)
1422                 return -ENOMEM;
1423
1424         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1425                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1426
1427                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
1428                         data->intr_ep = ep_desc;
1429                         continue;
1430                 }
1431
1432                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
1433                         data->bulk_tx_ep = ep_desc;
1434                         continue;
1435                 }
1436
1437                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
1438                         data->bulk_rx_ep = ep_desc;
1439                         continue;
1440                 }
1441         }
1442
1443         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
1444                 return -ENODEV;
1445
1446         data->cmdreq_type = USB_TYPE_CLASS;
1447
1448         data->udev = interface_to_usbdev(intf);
1449         data->intf = intf;
1450
1451         spin_lock_init(&data->lock);
1452
1453         INIT_WORK(&data->work, btusb_work);
1454         INIT_WORK(&data->waker, btusb_waker);
1455         spin_lock_init(&data->txlock);
1456
1457         init_usb_anchor(&data->tx_anchor);
1458         init_usb_anchor(&data->intr_anchor);
1459         init_usb_anchor(&data->bulk_anchor);
1460         init_usb_anchor(&data->isoc_anchor);
1461         init_usb_anchor(&data->deferred);
1462
1463         hdev = hci_alloc_dev();
1464         if (!hdev)
1465                 return -ENOMEM;
1466
1467         hdev->bus = HCI_USB;
1468         hci_set_drvdata(hdev, data);
1469
1470         data->hdev = hdev;
1471
1472         SET_HCIDEV_DEV(hdev, &intf->dev);
1473
1474         hdev->open   = btusb_open;
1475         hdev->close  = btusb_close;
1476         hdev->flush  = btusb_flush;
1477         hdev->send   = btusb_send_frame;
1478         hdev->notify = btusb_notify;
1479
1480         if (id->driver_info & BTUSB_BCM92035)
1481                 hdev->setup = btusb_setup_bcm92035;
1482
1483         if (id->driver_info & BTUSB_INTEL) {
1484                 usb_enable_autosuspend(data->udev);
1485                 hdev->setup = btusb_setup_intel;
1486         }
1487
1488         /* Interface numbers are hardcoded in the specification */
1489         data->isoc = usb_ifnum_to_if(data->udev, 1);
1490
1491         if (!reset)
1492                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1493
1494         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1495                 if (!disable_scofix)
1496                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1497         }
1498
1499         if (id->driver_info & BTUSB_BROKEN_ISOC)
1500                 data->isoc = NULL;
1501
1502         if (id->driver_info & BTUSB_DIGIANSWER) {
1503                 data->cmdreq_type = USB_TYPE_VENDOR;
1504                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1505         }
1506
1507         if (id->driver_info & BTUSB_CSR) {
1508                 struct usb_device *udev = data->udev;
1509                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
1510
1511                 /* Old firmware would otherwise execute USB reset */
1512                 if (bcdDevice < 0x117)
1513                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1514
1515                 /* Fake CSR devices with broken commands */
1516                 if (bcdDevice <= 0x100)
1517                         hdev->setup = btusb_setup_csr;
1518         }
1519
1520         if (id->driver_info & BTUSB_SNIFFER) {
1521                 struct usb_device *udev = data->udev;
1522
1523                 /* New sniffer firmware has crippled HCI interface */
1524                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1525                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1526
1527                 data->isoc = NULL;
1528         }
1529
1530         if (data->isoc) {
1531                 err = usb_driver_claim_interface(&btusb_driver,
1532                                                         data->isoc, data);
1533                 if (err < 0) {
1534                         hci_free_dev(hdev);
1535                         return err;
1536                 }
1537         }
1538
1539         err = hci_register_dev(hdev);
1540         if (err < 0) {
1541                 hci_free_dev(hdev);
1542                 return err;
1543         }
1544
1545         usb_set_intfdata(intf, data);
1546
1547         return 0;
1548 }
1549
1550 static void btusb_disconnect(struct usb_interface *intf)
1551 {
1552         struct btusb_data *data = usb_get_intfdata(intf);
1553         struct hci_dev *hdev;
1554
1555         BT_DBG("intf %p", intf);
1556
1557         if (!data)
1558                 return;
1559
1560         hdev = data->hdev;
1561         usb_set_intfdata(data->intf, NULL);
1562
1563         if (data->isoc)
1564                 usb_set_intfdata(data->isoc, NULL);
1565
1566         hci_unregister_dev(hdev);
1567
1568         if (intf == data->isoc)
1569                 usb_driver_release_interface(&btusb_driver, data->intf);
1570         else if (data->isoc)
1571                 usb_driver_release_interface(&btusb_driver, data->isoc);
1572
1573         hci_free_dev(hdev);
1574 }
1575
1576 #ifdef CONFIG_PM
1577 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1578 {
1579         struct btusb_data *data = usb_get_intfdata(intf);
1580
1581         BT_DBG("intf %p", intf);
1582
1583         if (data->suspend_count++)
1584                 return 0;
1585
1586         spin_lock_irq(&data->txlock);
1587         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1588                 set_bit(BTUSB_SUSPENDING, &data->flags);
1589                 spin_unlock_irq(&data->txlock);
1590         } else {
1591                 spin_unlock_irq(&data->txlock);
1592                 data->suspend_count--;
1593                 return -EBUSY;
1594         }
1595
1596         cancel_work_sync(&data->work);
1597
1598         btusb_stop_traffic(data);
1599         usb_kill_anchored_urbs(&data->tx_anchor);
1600
1601         return 0;
1602 }
1603
1604 static void play_deferred(struct btusb_data *data)
1605 {
1606         struct urb *urb;
1607         int err;
1608
1609         while ((urb = usb_get_from_anchor(&data->deferred))) {
1610                 err = usb_submit_urb(urb, GFP_ATOMIC);
1611                 if (err < 0)
1612                         break;
1613
1614                 data->tx_in_flight++;
1615         }
1616         usb_scuttle_anchored_urbs(&data->deferred);
1617 }
1618
1619 static int btusb_resume(struct usb_interface *intf)
1620 {
1621         struct btusb_data *data = usb_get_intfdata(intf);
1622         struct hci_dev *hdev = data->hdev;
1623         int err = 0;
1624
1625         BT_DBG("intf %p", intf);
1626
1627         if (--data->suspend_count)
1628                 return 0;
1629
1630         if (!test_bit(HCI_RUNNING, &hdev->flags))
1631                 goto done;
1632
1633         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1634                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1635                 if (err < 0) {
1636                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1637                         goto failed;
1638                 }
1639         }
1640
1641         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1642                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1643                 if (err < 0) {
1644                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1645                         goto failed;
1646                 }
1647
1648                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1649         }
1650
1651         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1652                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1653                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1654                 else
1655                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1656         }
1657
1658         spin_lock_irq(&data->txlock);
1659         play_deferred(data);
1660         clear_bit(BTUSB_SUSPENDING, &data->flags);
1661         spin_unlock_irq(&data->txlock);
1662         schedule_work(&data->work);
1663
1664         return 0;
1665
1666 failed:
1667         usb_scuttle_anchored_urbs(&data->deferred);
1668 done:
1669         spin_lock_irq(&data->txlock);
1670         clear_bit(BTUSB_SUSPENDING, &data->flags);
1671         spin_unlock_irq(&data->txlock);
1672
1673         return err;
1674 }
1675 #endif
1676
1677 static struct usb_driver btusb_driver = {
1678         .name           = "btusb",
1679         .probe          = btusb_probe,
1680         .disconnect     = btusb_disconnect,
1681 #ifdef CONFIG_PM
1682         .suspend        = btusb_suspend,
1683         .resume         = btusb_resume,
1684 #endif
1685         .id_table       = btusb_table,
1686         .supports_autosuspend = 1,
1687         .disable_hub_initiated_lpm = 1,
1688 };
1689
1690 module_usb_driver(btusb_driver);
1691
1692 module_param(ignore_dga, bool, 0644);
1693 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1694
1695 module_param(ignore_csr, bool, 0644);
1696 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1697
1698 module_param(ignore_sniffer, bool, 0644);
1699 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1700
1701 module_param(disable_scofix, bool, 0644);
1702 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1703
1704 module_param(force_scofix, bool, 0644);
1705 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1706
1707 module_param(reset, bool, 0644);
1708 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1709
1710 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1711 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1712 MODULE_VERSION(VERSION);
1713 MODULE_LICENSE("GPL");