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(0x0489, 0xe042) },
 105         { USB_DEVICE(0x04ca, 0x2003) },
 106         { USB_DEVICE(0x0b05, 0x17b5) },
 107         { USB_DEVICE(0x0b05, 0x17cb) },
 108         { USB_DEVICE(0x413c, 0x8197) },
 109
 110         /* Foxconn - Hon Hai */
 111         { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01) },
 112
 113         /* Broadcom devices with vendor specific id */
 114         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01) },
 115
 116         /* Belkin F8065bf - Broadcom based */
 117         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01) },
 118
 119         /* IMC Networks - Broadcom based */
 120         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01) },
 121
 122         { }     /* Terminating entry */
 123 };
 124
 125 MODULE_DEVICE_TABLE(usb, btusb_table);
 126
 127 static const struct usb_device_id blacklist_table[] = {
 128         /* CSR BlueCore devices */
 129         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 130
 131         /* Broadcom BCM2033 without firmware */
 132         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 133
 134         /* Atheros 3011 with sflash firmware */
 135         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 136         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 137         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 138         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 139         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 140         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 141
 142         /* Atheros AR9285 Malbec with sflash firmware */
 143         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 144
 145         /* Atheros 3012 with sflash firmware */
 146         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 147         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 148         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 149         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 150         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 151         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 152         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 153         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 154         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 155         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 156         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 157         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 158         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 159         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 160         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 161         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 162         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 163         { USB_DEVICE(0x0cf3, 0x3005), .driver_info = BTUSB_ATH3012 },
 164         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 165         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 166         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
 167         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 168         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 169         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 170         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 171         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 172         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 173         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 174         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 175         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 176         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 177
 178         /* Atheros AR5BBU12 with sflash firmware */
 179         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 180
 181         /* Atheros AR5BBU12 with sflash firmware */
 182         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 183         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 184
 185         /* Broadcom BCM2035 */
 186         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 187         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 188         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 189
 190         /* Broadcom BCM2045 */
 191         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 192         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 193
 194         /* IBM/Lenovo ThinkPad with Broadcom chip */
 195         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 196         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 197
 198         /* HP laptop with Broadcom chip */
 199         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 200
 201         /* Dell laptop with Broadcom chip */
 202         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 203
 204         /* Dell Wireless 370 and 410 devices */
 205         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 206         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 207
 208         /* Belkin F8T012 and F8T013 devices */
 209         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 210         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 211
 212         /* Asus WL-BTD202 device */
 213         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 214
 215         /* Kensington Bluetooth USB adapter */
 216         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 217
 218         /* RTX Telecom based adapters with buggy SCO support */
 219         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 220         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 221
 222         /* CONWISE Technology based adapters with buggy SCO support */
 223         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 224
 225         /* Digianswer devices */
 226         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 227         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 228
 229         /* CSR BlueCore Bluetooth Sniffer */
 230         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
 231
 232         /* Frontline ComProbe Bluetooth Sniffer */
 233         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
 234
 235         /* Intel Bluetooth device */
 236         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 237         { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
 238
 239         { }     /* Terminating entry */
 240 };
 241
 242 #define BTUSB_MAX_ISOC_FRAMES   10
 243
 244 #define BTUSB_INTR_RUNNING      0
 245 #define BTUSB_BULK_RUNNING      1
 246 #define BTUSB_ISOC_RUNNING      2
 247 #define BTUSB_SUSPENDING        3
 248 #define BTUSB_DID_ISO_RESUME    4
 249
 250 struct btusb_data {
 251         struct hci_dev       *hdev;
 252         struct usb_device    *udev;
 253         struct usb_interface *intf;
 254         struct usb_interface *isoc;
 255
 256         spinlock_t lock;
 257
 258         unsigned long flags;
 259
 260         struct work_struct work;
 261         struct work_struct waker;
 262
 263         struct usb_anchor tx_anchor;
 264         struct usb_anchor intr_anchor;
 265         struct usb_anchor bulk_anchor;
 266         struct usb_anchor isoc_anchor;
 267         struct usb_anchor deferred;
 268         int tx_in_flight;
 269         spinlock_t txlock;
 270
 271         struct usb_endpoint_descriptor *intr_ep;
 272         struct usb_endpoint_descriptor *bulk_tx_ep;
 273         struct usb_endpoint_descriptor *bulk_rx_ep;
 274         struct usb_endpoint_descriptor *isoc_tx_ep;
 275         struct usb_endpoint_descriptor *isoc_rx_ep;
 276
 277         __u8 cmdreq_type;
 278
 279         unsigned int sco_num;
 280         int isoc_altsetting;
 281         int suspend_count;
 282 };
 283
 284 static int inc_tx(struct btusb_data *data)
 285 {
 286         unsigned long flags;
 287         int rv;
 288
 289         spin_lock_irqsave(&data->txlock, flags);
 290         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
 291         if (!rv)
 292                 data->tx_in_flight++;
 293         spin_unlock_irqrestore(&data->txlock, flags);
 294
 295         return rv;
 296 }
 297
 298 static void btusb_intr_complete(struct urb *urb)
 299 {
 300         struct hci_dev *hdev = urb->context;
 301         struct btusb_data *data = hci_get_drvdata(hdev);
 302         int err;
 303
 304         BT_DBG("%s urb %p status %d count %d", hdev->name,
 305                                         urb, urb->status, urb->actual_length);
 306
 307         if (!test_bit(HCI_RUNNING, &hdev->flags))
 308                 return;
 309
 310         if (urb->status == 0) {
 311                 hdev->stat.byte_rx += urb->actual_length;
 312
 313                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
 314                                                 urb->transfer_buffer,
 315                                                 urb->actual_length) < 0) {
 316                         BT_ERR("%s corrupted event packet", hdev->name);
 317                         hdev->stat.err_rx++;
 318                 }
 319         }
 320
 321         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 322                 return;
 323
 324         usb_mark_last_busy(data->udev);
 325         usb_anchor_urb(urb, &data->intr_anchor);
 326
 327         err = usb_submit_urb(urb, GFP_ATOMIC);
 328         if (err < 0) {
 329                 /* -EPERM: urb is being killed;
 330                  * -ENODEV: device got disconnected */
 331                 if (err != -EPERM && err != -ENODEV)
 332                         BT_ERR("%s urb %p failed to resubmit (%d)",
 333                                                 hdev->name, urb, -err);
 334                 usb_unanchor_urb(urb);
 335         }
 336 }
 337
 338 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 339 {
 340         struct btusb_data *data = hci_get_drvdata(hdev);
 341         struct urb *urb;
 342         unsigned char *buf;
 343         unsigned int pipe;
 344         int err, size;
 345
 346         BT_DBG("%s", hdev->name);
 347
 348         if (!data->intr_ep)
 349                 return -ENODEV;
 350
 351         urb = usb_alloc_urb(0, mem_flags);
 352         if (!urb)
 353                 return -ENOMEM;
 354
 355         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 356
 357         buf = kmalloc(size, mem_flags);
 358         if (!buf) {
 359                 usb_free_urb(urb);
 360                 return -ENOMEM;
 361         }
 362
 363         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 364
 365         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 366                                                 btusb_intr_complete, hdev,
 367                                                 data->intr_ep->bInterval);
 368
 369         urb->transfer_flags |= URB_FREE_BUFFER;
 370
 371         usb_anchor_urb(urb, &data->intr_anchor);
 372
 373         err = usb_submit_urb(urb, mem_flags);
 374         if (err < 0) {
 375                 if (err != -EPERM && err != -ENODEV)
 376                         BT_ERR("%s urb %p submission failed (%d)",
 377                                                 hdev->name, urb, -err);
 378                 usb_unanchor_urb(urb);
 379         }
 380
 381         usb_free_urb(urb);
 382
 383         return err;
 384 }
 385
 386 static void btusb_bulk_complete(struct urb *urb)
 387 {
 388         struct hci_dev *hdev = urb->context;
 389         struct btusb_data *data = hci_get_drvdata(hdev);
 390         int err;
 391
 392         BT_DBG("%s urb %p status %d count %d", hdev->name,
 393                                         urb, urb->status, urb->actual_length);
 394
 395         if (!test_bit(HCI_RUNNING, &hdev->flags))
 396                 return;
 397
 398         if (urb->status == 0) {
 399                 hdev->stat.byte_rx += urb->actual_length;
 400
 401                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
 402                                                 urb->transfer_buffer,
 403                                                 urb->actual_length) < 0) {
 404                         BT_ERR("%s corrupted ACL packet", hdev->name);
 405                         hdev->stat.err_rx++;
 406                 }
 407         }
 408
 409         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 410                 return;
 411
 412         usb_anchor_urb(urb, &data->bulk_anchor);
 413         usb_mark_last_busy(data->udev);
 414
 415         err = usb_submit_urb(urb, GFP_ATOMIC);
 416         if (err < 0) {
 417                 /* -EPERM: urb is being killed;
 418                  * -ENODEV: device got disconnected */
 419                 if (err != -EPERM && err != -ENODEV)
 420                         BT_ERR("%s urb %p failed to resubmit (%d)",
 421                                                 hdev->name, urb, -err);
 422                 usb_unanchor_urb(urb);
 423         }
 424 }
 425
 426 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 427 {
 428         struct btusb_data *data = hci_get_drvdata(hdev);
 429         struct urb *urb;
 430         unsigned char *buf;
 431         unsigned int pipe;
 432         int err, size = HCI_MAX_FRAME_SIZE;
 433
 434         BT_DBG("%s", hdev->name);
 435
 436         if (!data->bulk_rx_ep)
 437                 return -ENODEV;
 438
 439         urb = usb_alloc_urb(0, mem_flags);
 440         if (!urb)
 441                 return -ENOMEM;
 442
 443         buf = kmalloc(size, mem_flags);
 444         if (!buf) {
 445                 usb_free_urb(urb);
 446                 return -ENOMEM;
 447         }
 448
 449         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 450
 451         usb_fill_bulk_urb(urb, data->udev, pipe,
 452                                         buf, size, btusb_bulk_complete, hdev);
 453
 454         urb->transfer_flags |= URB_FREE_BUFFER;
 455
 456         usb_mark_last_busy(data->udev);
 457         usb_anchor_urb(urb, &data->bulk_anchor);
 458
 459         err = usb_submit_urb(urb, mem_flags);
 460         if (err < 0) {
 461                 if (err != -EPERM && err != -ENODEV)
 462                         BT_ERR("%s urb %p submission failed (%d)",
 463                                                 hdev->name, urb, -err);
 464                 usb_unanchor_urb(urb);
 465         }
 466
 467         usb_free_urb(urb);
 468
 469         return err;
 470 }
 471
 472 static void btusb_isoc_complete(struct urb *urb)
 473 {
 474         struct hci_dev *hdev = urb->context;
 475         struct btusb_data *data = hci_get_drvdata(hdev);
 476         int i, err;
 477
 478         BT_DBG("%s urb %p status %d count %d", hdev->name,
 479                                         urb, urb->status, urb->actual_length);
 480
 481         if (!test_bit(HCI_RUNNING, &hdev->flags))
 482                 return;
 483
 484         if (urb->status == 0) {
 485                 for (i = 0; i < urb->number_of_packets; i++) {
 486                         unsigned int offset = urb->iso_frame_desc[i].offset;
 487                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 488
 489                         if (urb->iso_frame_desc[i].status)
 490                                 continue;
 491
 492                         hdev->stat.byte_rx += length;
 493
 494                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
 495                                                 urb->transfer_buffer + offset,
 496                                                                 length) < 0) {
 497                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 498                                 hdev->stat.err_rx++;
 499                         }
 500                 }
 501         }
 502
 503         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 504                 return;
 505
 506         usb_anchor_urb(urb, &data->isoc_anchor);
 507
 508         err = usb_submit_urb(urb, GFP_ATOMIC);
 509         if (err < 0) {
 510                 /* -EPERM: urb is being killed;
 511                  * -ENODEV: device got disconnected */
 512                 if (err != -EPERM && err != -ENODEV)
 513                         BT_ERR("%s urb %p failed to resubmit (%d)",
 514                                                 hdev->name, urb, -err);
 515                 usb_unanchor_urb(urb);
 516         }
 517 }
 518
 519 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 520 {
 521         int i, offset = 0;
 522
 523         BT_DBG("len %d mtu %d", len, mtu);
 524
 525         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 526                                         i++, offset += mtu, len -= mtu) {
 527                 urb->iso_frame_desc[i].offset = offset;
 528                 urb->iso_frame_desc[i].length = mtu;
 529         }
 530
 531         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 532                 urb->iso_frame_desc[i].offset = offset;
 533                 urb->iso_frame_desc[i].length = len;
 534                 i++;
 535         }
 536
 537         urb->number_of_packets = i;
 538 }
 539
 540 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 541 {
 542         struct btusb_data *data = hci_get_drvdata(hdev);
 543         struct urb *urb;
 544         unsigned char *buf;
 545         unsigned int pipe;
 546         int err, size;
 547
 548         BT_DBG("%s", hdev->name);
 549
 550         if (!data->isoc_rx_ep)
 551                 return -ENODEV;
 552
 553         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 554         if (!urb)
 555                 return -ENOMEM;
 556
 557         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 558                                                 BTUSB_MAX_ISOC_FRAMES;
 559
 560         buf = kmalloc(size, mem_flags);
 561         if (!buf) {
 562                 usb_free_urb(urb);
 563                 return -ENOMEM;
 564         }
 565
 566         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 567
 568         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 569                                 hdev, data->isoc_rx_ep->bInterval);
 570
 571         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
 572
 573         __fill_isoc_descriptor(urb, size,
 574                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 575
 576         usb_anchor_urb(urb, &data->isoc_anchor);
 577
 578         err = usb_submit_urb(urb, mem_flags);
 579         if (err < 0) {
 580                 if (err != -EPERM && err != -ENODEV)
 581                         BT_ERR("%s urb %p submission failed (%d)",
 582                                                 hdev->name, urb, -err);
 583                 usb_unanchor_urb(urb);
 584         }
 585
 586         usb_free_urb(urb);
 587
 588         return err;
 589 }
 590
 591 static void btusb_tx_complete(struct urb *urb)
 592 {
 593         struct sk_buff *skb = urb->context;
 594         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 595         struct btusb_data *data = hci_get_drvdata(hdev);
 596
 597         BT_DBG("%s urb %p status %d count %d", hdev->name,
 598                                         urb, urb->status, urb->actual_length);
 599
 600         if (!test_bit(HCI_RUNNING, &hdev->flags))
 601                 goto done;
 602
 603         if (!urb->status)
 604                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 605         else
 606                 hdev->stat.err_tx++;
 607
 608 done:
 609         spin_lock(&data->txlock);
 610         data->tx_in_flight--;
 611         spin_unlock(&data->txlock);
 612
 613         kfree(urb->setup_packet);
 614
 615         kfree_skb(skb);
 616 }
 617
 618 static void btusb_isoc_tx_complete(struct urb *urb)
 619 {
 620         struct sk_buff *skb = urb->context;
 621         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 622
 623         BT_DBG("%s urb %p status %d count %d", hdev->name,
 624                                         urb, urb->status, urb->actual_length);
 625
 626         if (!test_bit(HCI_RUNNING, &hdev->flags))
 627                 goto done;
 628
 629         if (!urb->status)
 630                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 631         else
 632                 hdev->stat.err_tx++;
 633
 634 done:
 635         kfree(urb->setup_packet);
 636
 637         kfree_skb(skb);
 638 }
 639
 640 static int btusb_open(struct hci_dev *hdev)
 641 {
 642         struct btusb_data *data = hci_get_drvdata(hdev);
 643         int err;
 644
 645         BT_DBG("%s", hdev->name);
 646
 647         err = usb_autopm_get_interface(data->intf);
 648         if (err < 0)
 649                 return err;
 650
 651         data->intf->needs_remote_wakeup = 1;
 652
 653         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 654                 goto done;
 655
 656         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 657                 goto done;
 658
 659         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 660         if (err < 0)
 661                 goto failed;
 662
 663         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 664         if (err < 0) {
 665                 usb_kill_anchored_urbs(&data->intr_anchor);
 666                 goto failed;
 667         }
 668
 669         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 670         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 671
 672 done:
 673         usb_autopm_put_interface(data->intf);
 674         return 0;
 675
 676 failed:
 677         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 678         clear_bit(HCI_RUNNING, &hdev->flags);
 679         usb_autopm_put_interface(data->intf);
 680         return err;
 681 }
 682
 683 static void btusb_stop_traffic(struct btusb_data *data)
 684 {
 685         usb_kill_anchored_urbs(&data->intr_anchor);
 686         usb_kill_anchored_urbs(&data->bulk_anchor);
 687         usb_kill_anchored_urbs(&data->isoc_anchor);
 688 }
 689
 690 static int btusb_close(struct hci_dev *hdev)
 691 {
 692         struct btusb_data *data = hci_get_drvdata(hdev);
 693         int err;
 694
 695         BT_DBG("%s", hdev->name);
 696
 697         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 698                 return 0;
 699
 700         cancel_work_sync(&data->work);
 701         cancel_work_sync(&data->waker);
 702
 703         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 704         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 705         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 706
 707         btusb_stop_traffic(data);
 708         err = usb_autopm_get_interface(data->intf);
 709         if (err < 0)
 710                 goto failed;
 711
 712         data->intf->needs_remote_wakeup = 0;
 713         usb_autopm_put_interface(data->intf);
 714
 715 failed:
 716         usb_scuttle_anchored_urbs(&data->deferred);
 717         return 0;
 718 }
 719
 720 static int btusb_flush(struct hci_dev *hdev)
 721 {
 722         struct btusb_data *data = hci_get_drvdata(hdev);
 723
 724         BT_DBG("%s", hdev->name);
 725
 726         usb_kill_anchored_urbs(&data->tx_anchor);
 727
 728         return 0;
 729 }
 730
 731 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
 732 {
 733         struct btusb_data *data = hci_get_drvdata(hdev);
 734         struct usb_ctrlrequest *dr;
 735         struct urb *urb;
 736         unsigned int pipe;
 737         int err;
 738
 739         BT_DBG("%s", hdev->name);
 740
 741         if (!test_bit(HCI_RUNNING, &hdev->flags))
 742                 return -EBUSY;
 743
 744         skb->dev = (void *) hdev;
 745
 746         switch (bt_cb(skb)->pkt_type) {
 747         case HCI_COMMAND_PKT:
 748                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 749                 if (!urb)
 750                         return -ENOMEM;
 751
 752                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
 753                 if (!dr) {
 754                         usb_free_urb(urb);
 755                         return -ENOMEM;
 756                 }
 757
 758                 dr->bRequestType = data->cmdreq_type;
 759                 dr->bRequest     = 0;
 760                 dr->wIndex       = 0;
 761                 dr->wValue       = 0;
 762                 dr->wLength      = __cpu_to_le16(skb->len);
 763
 764                 pipe = usb_sndctrlpipe(data->udev, 0x00);
 765
 766                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
 767                                 skb->data, skb->len, btusb_tx_complete, skb);
 768
 769                 hdev->stat.cmd_tx++;
 770                 break;
 771
 772         case HCI_ACLDATA_PKT:
 773                 if (!data->bulk_tx_ep)
 774                         return -ENODEV;
 775
 776                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 777                 if (!urb)
 778                         return -ENOMEM;
 779
 780                 pipe = usb_sndbulkpipe(data->udev,
 781                                         data->bulk_tx_ep->bEndpointAddress);
 782
 783                 usb_fill_bulk_urb(urb, data->udev, pipe,
 784                                 skb->data, skb->len, btusb_tx_complete, skb);
 785
 786                 hdev->stat.acl_tx++;
 787                 break;
 788
 789         case HCI_SCODATA_PKT:
 790                 if (!data->isoc_tx_ep || hci_conn_num(hdev, SCO_LINK) < 1)
 791                         return -ENODEV;
 792
 793                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
 794                 if (!urb)
 795                         return -ENOMEM;
 796
 797                 pipe = usb_sndisocpipe(data->udev,
 798                                         data->isoc_tx_ep->bEndpointAddress);
 799
 800                 usb_fill_int_urb(urb, data->udev, pipe,
 801                                 skb->data, skb->len, btusb_isoc_tx_complete,
 802                                 skb, data->isoc_tx_ep->bInterval);
 803
 804                 urb->transfer_flags  = URB_ISO_ASAP;
 805
 806                 __fill_isoc_descriptor(urb, skb->len,
 807                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 808
 809                 hdev->stat.sco_tx++;
 810                 goto skip_waking;
 811
 812         default:
 813                 return -EILSEQ;
 814         }
 815
 816         err = inc_tx(data);
 817         if (err) {
 818                 usb_anchor_urb(urb, &data->deferred);
 819                 schedule_work(&data->waker);
 820                 err = 0;
 821                 goto done;
 822         }
 823
 824 skip_waking:
 825         usb_anchor_urb(urb, &data->tx_anchor);
 826
 827         err = usb_submit_urb(urb, GFP_ATOMIC);
 828         if (err < 0) {
 829                 if (err != -EPERM && err != -ENODEV)
 830                         BT_ERR("%s urb %p submission failed (%d)",
 831                                                 hdev->name, urb, -err);
 832                 kfree(urb->setup_packet);
 833                 usb_unanchor_urb(urb);
 834         } else {
 835                 usb_mark_last_busy(data->udev);
 836         }
 837
 838 done:
 839         usb_free_urb(urb);
 840         return err;
 841 }
 842
 843 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 844 {
 845         struct btusb_data *data = hci_get_drvdata(hdev);
 846
 847         BT_DBG("%s evt %d", hdev->name, evt);
 848
 849         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
 850                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
 851                 schedule_work(&data->work);
 852         }
 853 }
 854
 855 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
 856 {
 857         struct btusb_data *data = hci_get_drvdata(hdev);
 858         struct usb_interface *intf = data->isoc;
 859         struct usb_endpoint_descriptor *ep_desc;
 860         int i, err;
 861
 862         if (!data->isoc)
 863                 return -ENODEV;
 864
 865         err = usb_set_interface(data->udev, 1, altsetting);
 866         if (err < 0) {
 867                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
 868                 return err;
 869         }
 870
 871         data->isoc_altsetting = altsetting;
 872
 873         data->isoc_tx_ep = NULL;
 874         data->isoc_rx_ep = NULL;
 875
 876         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 877                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 878
 879                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
 880                         data->isoc_tx_ep = ep_desc;
 881                         continue;
 882                 }
 883
 884                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
 885                         data->isoc_rx_ep = ep_desc;
 886                         continue;
 887                 }
 888         }
 889
 890         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
 891                 BT_ERR("%s invalid SCO descriptors", hdev->name);
 892                 return -ENODEV;
 893         }
 894
 895         return 0;
 896 }
 897
 898 static void btusb_work(struct work_struct *work)
 899 {
 900         struct btusb_data *data = container_of(work, struct btusb_data, work);
 901         struct hci_dev *hdev = data->hdev;
 902         int new_alts;
 903         int err;
 904
 905         if (data->sco_num > 0) {
 906                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
 907                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
 908                         if (err < 0) {
 909                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 910                                 usb_kill_anchored_urbs(&data->isoc_anchor);
 911                                 return;
 912                         }
 913
 914                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
 915                 }
 916
 917                 if (hdev->voice_setting & 0x0020) {
 918                         static const int alts[3] = { 2, 4, 5 };
 919                         new_alts = alts[data->sco_num - 1];
 920                 } else {
 921                         new_alts = data->sco_num;
 922                 }
 923
 924                 if (data->isoc_altsetting != new_alts) {
 925                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 926                         usb_kill_anchored_urbs(&data->isoc_anchor);
 927
 928                         if (__set_isoc_interface(hdev, new_alts) < 0)
 929                                 return;
 930                 }
 931
 932                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
 933                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
 934                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 935                         else
 936                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
 937                 }
 938         } else {
 939                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 940                 usb_kill_anchored_urbs(&data->isoc_anchor);
 941
 942                 __set_isoc_interface(hdev, 0);
 943                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
 944                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
 945         }
 946 }
 947
 948 static void btusb_waker(struct work_struct *work)
 949 {
 950         struct btusb_data *data = container_of(work, struct btusb_data, waker);
 951         int err;
 952
 953         err = usb_autopm_get_interface(data->intf);
 954         if (err < 0)
 955                 return;
 956
 957         usb_autopm_put_interface(data->intf);
 958 }
 959
 960 static int btusb_setup_bcm92035(struct hci_dev *hdev)
 961 {
 962         struct sk_buff *skb;
 963         u8 val = 0x00;
 964
 965         BT_DBG("%s", hdev->name);
 966
 967         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
 968         if (IS_ERR(skb))
 969                 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
 970         else
 971                 kfree_skb(skb);
 972
 973         return 0;
 974 }
 975
 976 static int btusb_setup_csr(struct hci_dev *hdev)
 977 {
 978         struct hci_rp_read_local_version *rp;
 979         struct sk_buff *skb;
 980         int ret;
 981
 982         BT_DBG("%s", hdev->name);
 983
 984         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
 985                              HCI_INIT_TIMEOUT);
 986         if (IS_ERR(skb)) {
 987                 BT_ERR("Reading local version failed (%ld)", -PTR_ERR(skb));
 988                 return -PTR_ERR(skb);
 989         }
 990
 991         rp = (struct hci_rp_read_local_version *) skb->data;
 992
 993         if (!rp->status) {
 994                 if (le16_to_cpu(rp->manufacturer) != 10) {
 995                         /* Clear the reset quirk since this is not an actual
 996                          * early Bluetooth 1.1 device from CSR.
 997                          */
 998                         clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
 999
1000                         /* These fake CSR controllers have all a broken
1001                          * stored link key handling and so just disable it.
1002                          */
1003                         set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY,
1004                                 &hdev->quirks);
1005                 }
1006         }
1007
1008         ret = -bt_to_errno(rp->status);
1009
1010         kfree_skb(skb);
1011
1012         return ret;
1013 }
1014
1015 struct intel_version {
1016         u8 status;
1017         u8 hw_platform;
1018         u8 hw_variant;
1019         u8 hw_revision;
1020         u8 fw_variant;
1021         u8 fw_revision;
1022         u8 fw_build_num;
1023         u8 fw_build_ww;
1024         u8 fw_build_yy;
1025         u8 fw_patch_num;
1026 } __packed;
1027
1028 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1029                                                 struct intel_version *ver)
1030 {
1031         const struct firmware *fw;
1032         char fwname[64];
1033         int ret;
1034
1035         snprintf(fwname, sizeof(fwname),
1036                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1037                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
1038                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1039                  ver->fw_build_ww, ver->fw_build_yy);
1040
1041         ret = request_firmware(&fw, fwname, &hdev->dev);
1042         if (ret < 0) {
1043                 if (ret == -EINVAL) {
1044                         BT_ERR("%s Intel firmware file request failed (%d)",
1045                                hdev->name, ret);
1046                         return NULL;
1047                 }
1048
1049                 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1050                        hdev->name, fwname, ret);
1051
1052                 /* If the correct firmware patch file is not found, use the
1053                  * default firmware patch file instead
1054                  */
1055                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1056                          ver->hw_platform, ver->hw_variant);
1057                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1058                         BT_ERR("%s failed to open default Intel fw file: %s",
1059                                hdev->name, fwname);
1060                         return NULL;
1061                 }
1062         }
1063
1064         BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1065
1066         return fw;
1067 }
1068
1069 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1070                                       const struct firmware *fw,
1071                                       const u8 **fw_ptr, int *disable_patch)
1072 {
1073         struct sk_buff *skb;
1074         struct hci_command_hdr *cmd;
1075         const u8 *cmd_param;
1076         struct hci_event_hdr *evt = NULL;
1077         const u8 *evt_param = NULL;
1078         int remain = fw->size - (*fw_ptr - fw->data);
1079
1080         /* The first byte indicates the types of the patch command or event.
1081          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1082          * in the current firmware buffer doesn't start with 0x01 or
1083          * the size of remain buffer is smaller than HCI command header,
1084          * the firmware file is corrupted and it should stop the patching
1085          * process.
1086          */
1087         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1088                 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1089                 return -EINVAL;
1090         }
1091         (*fw_ptr)++;
1092         remain--;
1093
1094         cmd = (struct hci_command_hdr *)(*fw_ptr);
1095         *fw_ptr += sizeof(*cmd);
1096         remain -= sizeof(*cmd);
1097
1098         /* Ensure that the remain firmware data is long enough than the length
1099          * of command parameter. If not, the firmware file is corrupted.
1100          */
1101         if (remain < cmd->plen) {
1102                 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1103                 return -EFAULT;
1104         }
1105
1106         /* If there is a command that loads a patch in the firmware
1107          * file, then enable the patch upon success, otherwise just
1108          * disable the manufacturer mode, for example patch activation
1109          * is not required when the default firmware patch file is used
1110          * because there are no patch data to load.
1111          */
1112         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1113                 *disable_patch = 0;
1114
1115         cmd_param = *fw_ptr;
1116         *fw_ptr += cmd->plen;
1117         remain -= cmd->plen;
1118
1119         /* This reads the expected events when the above command is sent to the
1120          * device. Some vendor commands expects more than one events, for
1121          * example command status event followed by vendor specific event.
1122          * For this case, it only keeps the last expected event. so the command
1123          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1124          * last expected event.
1125          */
1126         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1127                 (*fw_ptr)++;
1128                 remain--;
1129
1130                 evt = (struct hci_event_hdr *)(*fw_ptr);
1131                 *fw_ptr += sizeof(*evt);
1132                 remain -= sizeof(*evt);
1133
1134                 if (remain < evt->plen) {
1135                         BT_ERR("%s Intel fw corrupted: invalid evt len",
1136                                hdev->name);
1137                         return -EFAULT;
1138                 }
1139
1140                 evt_param = *fw_ptr;
1141                 *fw_ptr += evt->plen;
1142                 remain -= evt->plen;
1143         }
1144
1145         /* Every HCI commands in the firmware file has its correspond event.
1146          * If event is not found or remain is smaller than zero, the firmware
1147          * file is corrupted.
1148          */
1149         if (!evt || !evt_param || remain < 0) {
1150                 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1151                 return -EFAULT;
1152         }
1153
1154         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1155                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1156         if (IS_ERR(skb)) {
1157                 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1158                        hdev->name, cmd->opcode, PTR_ERR(skb));
1159                 return PTR_ERR(skb);
1160         }
1161
1162         /* It ensures that the returned event matches the event data read from
1163          * the firmware file. At fist, it checks the length and then
1164          * the contents of the event.
1165          */
1166         if (skb->len != evt->plen) {
1167                 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1168                        le16_to_cpu(cmd->opcode));
1169                 kfree_skb(skb);
1170                 return -EFAULT;
1171         }
1172
1173         if (memcmp(skb->data, evt_param, evt->plen)) {
1174                 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1175                        hdev->name, le16_to_cpu(cmd->opcode));
1176                 kfree_skb(skb);
1177                 return -EFAULT;
1178         }
1179         kfree_skb(skb);
1180
1181         return 0;
1182 }
1183
1184 static int btusb_setup_intel(struct hci_dev *hdev)
1185 {
1186         struct sk_buff *skb;
1187         const struct firmware *fw;
1188         const u8 *fw_ptr;
1189         int disable_patch;
1190         struct intel_version *ver;
1191
1192         const u8 mfg_enable[] = { 0x01, 0x00 };
1193         const u8 mfg_disable[] = { 0x00, 0x00 };
1194         const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
1195         const u8 mfg_reset_activate[] = { 0x00, 0x02 };
1196
1197         BT_DBG("%s", hdev->name);
1198
1199         /* The controller has a bug with the first HCI command sent to it
1200          * returning number of completed commands as zero. This would stall the
1201          * command processing in the Bluetooth core.
1202          *
1203          * As a workaround, send HCI Reset command first which will reset the
1204          * number of completed commands and allow normal command processing
1205          * from now on.
1206          */
1207         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1208         if (IS_ERR(skb)) {
1209                 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1210                        hdev->name, PTR_ERR(skb));
1211                 return PTR_ERR(skb);
1212         }
1213         kfree_skb(skb);
1214
1215         /* Read Intel specific controller version first to allow selection of
1216          * which firmware file to load.
1217          *
1218          * The returned information are hardware variant and revision plus
1219          * firmware variant, revision and build number.
1220          */
1221         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1222         if (IS_ERR(skb)) {
1223                 BT_ERR("%s reading Intel fw version command failed (%ld)",
1224                        hdev->name, PTR_ERR(skb));
1225                 return PTR_ERR(skb);
1226         }
1227
1228         if (skb->len != sizeof(*ver)) {
1229                 BT_ERR("%s Intel version event length mismatch", hdev->name);
1230                 kfree_skb(skb);
1231                 return -EIO;
1232         }
1233
1234         ver = (struct intel_version *)skb->data;
1235         if (ver->status) {
1236                 BT_ERR("%s Intel fw version event failed (%02x)", hdev->name,
1237                        ver->status);
1238                 kfree_skb(skb);
1239                 return -bt_to_errno(ver->status);
1240         }
1241
1242         BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1243                 hdev->name, ver->hw_platform, ver->hw_variant,
1244                 ver->hw_revision, ver->fw_variant,  ver->fw_revision,
1245                 ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
1246                 ver->fw_patch_num);
1247
1248         /* fw_patch_num indicates the version of patch the device currently
1249          * have. If there is no patch data in the device, it is always 0x00.
1250          * So, if it is other than 0x00, no need to patch the deivce again.
1251          */
1252         if (ver->fw_patch_num) {
1253                 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1254                         hdev->name, ver->fw_patch_num);
1255                 kfree_skb(skb);
1256                 return 0;
1257         }
1258
1259         /* Opens the firmware patch file based on the firmware version read
1260          * from the controller. If it fails to open the matching firmware
1261          * patch file, it tries to open the default firmware patch file.
1262          * If no patch file is found, allow the device to operate without
1263          * a patch.
1264          */
1265         fw = btusb_setup_intel_get_fw(hdev, ver);
1266         if (!fw) {
1267                 kfree_skb(skb);
1268                 return 0;
1269         }
1270         fw_ptr = fw->data;
1271
1272         /* This Intel specific command enables the manufacturer mode of the
1273          * controller.
1274          *
1275          * Only while this mode is enabled, the driver can download the
1276          * firmware patch data and configuration parameters.
1277          */
1278         skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
1279         if (IS_ERR(skb)) {
1280                 BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
1281                        hdev->name, PTR_ERR(skb));
1282                 release_firmware(fw);
1283                 return PTR_ERR(skb);
1284         }
1285
1286         if (skb->data[0]) {
1287                 u8 evt_status = skb->data[0];
1288                 BT_ERR("%s enable Intel manufacturer mode event failed (%02x)",
1289                        hdev->name, evt_status);
1290                 kfree_skb(skb);
1291                 release_firmware(fw);
1292                 return -bt_to_errno(evt_status);
1293         }
1294         kfree_skb(skb);
1295
1296         disable_patch = 1;
1297
1298         /* The firmware data file consists of list of Intel specific HCI
1299          * commands and its expected events. The first byte indicates the
1300          * type of the message, either HCI command or HCI event.
1301          *
1302          * It reads the command and its expected event from the firmware file,
1303          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1304          * the returned event is compared with the event read from the firmware
1305          * file and it will continue until all the messages are downloaded to
1306          * the controller.
1307          *
1308          * Once the firmware patching is completed successfully,
1309          * the manufacturer mode is disabled with reset and activating the
1310          * downloaded patch.
1311          *
1312          * If the firmware patching fails, the manufacturer mode is
1313          * disabled with reset and deactivating the patch.
1314          *
1315          * If the default patch file is used, no reset is done when disabling
1316          * the manufacturer.
1317          */
1318         while (fw->size > fw_ptr - fw->data) {
1319                 int ret;
1320
1321                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1322                                                  &disable_patch);
1323                 if (ret < 0)
1324                         goto exit_mfg_deactivate;
1325         }
1326
1327         release_firmware(fw);
1328
1329         if (disable_patch)
1330                 goto exit_mfg_disable;
1331
1332         /* Patching completed successfully and disable the manufacturer mode
1333          * with reset and activate the downloaded firmware patches.
1334          */
1335         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
1336                              mfg_reset_activate, HCI_INIT_TIMEOUT);
1337         if (IS_ERR(skb)) {
1338                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1339                        hdev->name, PTR_ERR(skb));
1340                 return PTR_ERR(skb);
1341         }
1342         kfree_skb(skb);
1343
1344         BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1345                 hdev->name);
1346
1347         return 0;
1348
1349 exit_mfg_disable:
1350         /* Disable the manufacturer mode without reset */
1351         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
1352                              HCI_INIT_TIMEOUT);
1353         if (IS_ERR(skb)) {
1354                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1355                        hdev->name, PTR_ERR(skb));
1356                 return PTR_ERR(skb);
1357         }
1358         kfree_skb(skb);
1359
1360         BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1361         return 0;
1362
1363 exit_mfg_deactivate:
1364         release_firmware(fw);
1365
1366         /* Patching failed. Disable the manufacturer mode with reset and
1367          * deactivate the downloaded firmware patches.
1368          */
1369         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
1370                              mfg_reset_deactivate, HCI_INIT_TIMEOUT);
1371         if (IS_ERR(skb)) {
1372                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1373                        hdev->name, PTR_ERR(skb));
1374                 return PTR_ERR(skb);
1375         }
1376         kfree_skb(skb);
1377
1378         BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1379                 hdev->name);
1380
1381         return 0;
1382 }
1383
1384 static int btusb_probe(struct usb_interface *intf,
1385                                 const struct usb_device_id *id)
1386 {
1387         struct usb_endpoint_descriptor *ep_desc;
1388         struct btusb_data *data;
1389         struct hci_dev *hdev;
1390         int i, err;
1391
1392         BT_DBG("intf %p id %p", intf, id);
1393
1394         /* interface numbers are hardcoded in the spec */
1395         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
1396                 return -ENODEV;
1397
1398         if (!id->driver_info) {
1399                 const struct usb_device_id *match;
1400                 match = usb_match_id(intf, blacklist_table);
1401                 if (match)
1402                         id = match;
1403         }
1404
1405         if (id->driver_info == BTUSB_IGNORE)
1406                 return -ENODEV;
1407
1408         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
1409                 return -ENODEV;
1410
1411         if (ignore_csr && id->driver_info & BTUSB_CSR)
1412                 return -ENODEV;
1413
1414         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
1415                 return -ENODEV;
1416
1417         if (id->driver_info & BTUSB_ATH3012) {
1418                 struct usb_device *udev = interface_to_usbdev(intf);
1419
1420                 /* Old firmware would otherwise let ath3k driver load
1421                  * patch and sysconfig files */
1422                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
1423                         return -ENODEV;
1424         }
1425
1426         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
1427         if (!data)
1428                 return -ENOMEM;
1429
1430         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1431                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1432
1433                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
1434                         data->intr_ep = ep_desc;
1435                         continue;
1436                 }
1437
1438                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
1439                         data->bulk_tx_ep = ep_desc;
1440                         continue;
1441                 }
1442
1443                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
1444                         data->bulk_rx_ep = ep_desc;
1445                         continue;
1446                 }
1447         }
1448
1449         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
1450                 return -ENODEV;
1451
1452         data->cmdreq_type = USB_TYPE_CLASS;
1453
1454         data->udev = interface_to_usbdev(intf);
1455         data->intf = intf;
1456
1457         spin_lock_init(&data->lock);
1458
1459         INIT_WORK(&data->work, btusb_work);
1460         INIT_WORK(&data->waker, btusb_waker);
1461         spin_lock_init(&data->txlock);
1462
1463         init_usb_anchor(&data->tx_anchor);
1464         init_usb_anchor(&data->intr_anchor);
1465         init_usb_anchor(&data->bulk_anchor);
1466         init_usb_anchor(&data->isoc_anchor);
1467         init_usb_anchor(&data->deferred);
1468
1469         hdev = hci_alloc_dev();
1470         if (!hdev)
1471                 return -ENOMEM;
1472
1473         hdev->bus = HCI_USB;
1474         hci_set_drvdata(hdev, data);
1475
1476         data->hdev = hdev;
1477
1478         SET_HCIDEV_DEV(hdev, &intf->dev);
1479
1480         hdev->open   = btusb_open;
1481         hdev->close  = btusb_close;
1482         hdev->flush  = btusb_flush;
1483         hdev->send   = btusb_send_frame;
1484         hdev->notify = btusb_notify;
1485
1486         if (id->driver_info & BTUSB_BCM92035)
1487                 hdev->setup = btusb_setup_bcm92035;
1488
1489         if (id->driver_info & BTUSB_INTEL)
1490                 hdev->setup = btusb_setup_intel;
1491
1492         /* Interface numbers are hardcoded in the specification */
1493         data->isoc = usb_ifnum_to_if(data->udev, 1);
1494
1495         if (!reset)
1496                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1497
1498         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1499                 if (!disable_scofix)
1500                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1501         }
1502
1503         if (id->driver_info & BTUSB_BROKEN_ISOC)
1504                 data->isoc = NULL;
1505
1506         if (id->driver_info & BTUSB_DIGIANSWER) {
1507                 data->cmdreq_type = USB_TYPE_VENDOR;
1508                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1509         }
1510
1511         if (id->driver_info & BTUSB_CSR) {
1512                 struct usb_device *udev = data->udev;
1513                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
1514
1515                 /* Old firmware would otherwise execute USB reset */
1516                 if (bcdDevice < 0x117)
1517                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1518
1519                 /* Fake CSR devices with broken commands */
1520                 if (bcdDevice <= 0x100)
1521                         hdev->setup = btusb_setup_csr;
1522         }
1523
1524         if (id->driver_info & BTUSB_SNIFFER) {
1525                 struct usb_device *udev = data->udev;
1526
1527                 /* New sniffer firmware has crippled HCI interface */
1528                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1529                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1530
1531                 data->isoc = NULL;
1532         }
1533
1534         if (data->isoc) {
1535                 err = usb_driver_claim_interface(&btusb_driver,
1536                                                         data->isoc, data);
1537                 if (err < 0) {
1538                         hci_free_dev(hdev);
1539                         return err;
1540                 }
1541         }
1542
1543         err = hci_register_dev(hdev);
1544         if (err < 0) {
1545                 hci_free_dev(hdev);
1546                 return err;
1547         }
1548
1549         usb_set_intfdata(intf, data);
1550
1551         return 0;
1552 }
1553
1554 static void btusb_disconnect(struct usb_interface *intf)
1555 {
1556         struct btusb_data *data = usb_get_intfdata(intf);
1557         struct hci_dev *hdev;
1558
1559         BT_DBG("intf %p", intf);
1560
1561         if (!data)
1562                 return;
1563
1564         hdev = data->hdev;
1565         usb_set_intfdata(data->intf, NULL);
1566
1567         if (data->isoc)
1568                 usb_set_intfdata(data->isoc, NULL);
1569
1570         hci_unregister_dev(hdev);
1571
1572         if (intf == data->isoc)
1573                 usb_driver_release_interface(&btusb_driver, data->intf);
1574         else if (data->isoc)
1575                 usb_driver_release_interface(&btusb_driver, data->isoc);
1576
1577         hci_free_dev(hdev);
1578 }
1579
1580 #ifdef CONFIG_PM
1581 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1582 {
1583         struct btusb_data *data = usb_get_intfdata(intf);
1584
1585         BT_DBG("intf %p", intf);
1586
1587         if (data->suspend_count++)
1588                 return 0;
1589
1590         spin_lock_irq(&data->txlock);
1591         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1592                 set_bit(BTUSB_SUSPENDING, &data->flags);
1593                 spin_unlock_irq(&data->txlock);
1594         } else {
1595                 spin_unlock_irq(&data->txlock);
1596                 data->suspend_count--;
1597                 return -EBUSY;
1598         }
1599
1600         cancel_work_sync(&data->work);
1601
1602         btusb_stop_traffic(data);
1603         usb_kill_anchored_urbs(&data->tx_anchor);
1604
1605         return 0;
1606 }
1607
1608 static void play_deferred(struct btusb_data *data)
1609 {
1610         struct urb *urb;
1611         int err;
1612
1613         while ((urb = usb_get_from_anchor(&data->deferred))) {
1614                 err = usb_submit_urb(urb, GFP_ATOMIC);
1615                 if (err < 0)
1616                         break;
1617
1618                 data->tx_in_flight++;
1619         }
1620         usb_scuttle_anchored_urbs(&data->deferred);
1621 }
1622
1623 static int btusb_resume(struct usb_interface *intf)
1624 {
1625         struct btusb_data *data = usb_get_intfdata(intf);
1626         struct hci_dev *hdev = data->hdev;
1627         int err = 0;
1628
1629         BT_DBG("intf %p", intf);
1630
1631         if (--data->suspend_count)
1632                 return 0;
1633
1634         if (!test_bit(HCI_RUNNING, &hdev->flags))
1635                 goto done;
1636
1637         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1638                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1639                 if (err < 0) {
1640                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1641                         goto failed;
1642                 }
1643         }
1644
1645         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1646                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1647                 if (err < 0) {
1648                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1649                         goto failed;
1650                 }
1651
1652                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1653         }
1654
1655         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1656                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1657                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1658                 else
1659                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1660         }
1661
1662         spin_lock_irq(&data->txlock);
1663         play_deferred(data);
1664         clear_bit(BTUSB_SUSPENDING, &data->flags);
1665         spin_unlock_irq(&data->txlock);
1666         schedule_work(&data->work);
1667
1668         return 0;
1669
1670 failed:
1671         usb_scuttle_anchored_urbs(&data->deferred);
1672 done:
1673         spin_lock_irq(&data->txlock);
1674         clear_bit(BTUSB_SUSPENDING, &data->flags);
1675         spin_unlock_irq(&data->txlock);
1676
1677         return err;
1678 }
1679 #endif
1680
1681 static struct usb_driver btusb_driver = {
1682         .name           = "btusb",
1683         .probe          = btusb_probe,
1684         .disconnect     = btusb_disconnect,
1685 #ifdef CONFIG_PM
1686         .suspend        = btusb_suspend,
1687         .resume         = btusb_resume,
1688 #endif
1689         .id_table       = btusb_table,
1690         .supports_autosuspend = 1,
1691         .disable_hub_initiated_lpm = 1,
1692 };
1693
1694 module_usb_driver(btusb_driver);
1695
1696 module_param(ignore_dga, bool, 0644);
1697 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1698
1699 module_param(ignore_csr, bool, 0644);
1700 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1701
1702 module_param(ignore_sniffer, bool, 0644);
1703 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1704
1705 module_param(disable_scofix, bool, 0644);
1706 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1707
1708 module_param(force_scofix, bool, 0644);
1709 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1710
1711 module_param(reset, bool, 0644);
1712 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1713
1714 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1715 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1716 MODULE_VERSION(VERSION);
1717 MODULE_LICENSE("GPL");