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, 0x3008), .driver_info = BTUSB_ATH3012 },
 156         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 157         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 158         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 159         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 160         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 161         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 162         { USB_DEVICE(0x0cf3, 0x3005), .driver_info = BTUSB_ATH3012 },
 163         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 164         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 165         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
 166         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 167         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 168         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 169         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 170         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 171         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 172         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 173         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 174         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 175         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 176
 177         /* Atheros AR5BBU12 with sflash firmware */
 178         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 179
 180         /* Atheros AR5BBU12 with sflash firmware */
 181         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 182         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 183
 184         /* Broadcom BCM2035 */
 185         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 186         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 187         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 188
 189         /* Broadcom BCM2045 */
 190         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 191         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 192
 193         /* IBM/Lenovo ThinkPad with Broadcom chip */
 194         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 195         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 196
 197         /* HP laptop with Broadcom chip */
 198         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 199
 200         /* Dell laptop with Broadcom chip */
 201         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 202
 203         /* Dell Wireless 370 and 410 devices */
 204         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 205         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 206
 207         /* Belkin F8T012 and F8T013 devices */
 208         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 209         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 210
 211         /* Asus WL-BTD202 device */
 212         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 213
 214         /* Kensington Bluetooth USB adapter */
 215         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 216
 217         /* RTX Telecom based adapters with buggy SCO support */
 218         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 219         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 220
 221         /* CONWISE Technology based adapters with buggy SCO support */
 222         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 223
 224         /* Digianswer devices */
 225         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 226         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 227
 228         /* CSR BlueCore Bluetooth Sniffer */
 229         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
 230
 231         /* Frontline ComProbe Bluetooth Sniffer */
 232         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
 233
 234         /* Intel Bluetooth device */
 235         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 236         { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
 237
 238         { }     /* Terminating entry */
 239 };
 240
 241 #define BTUSB_MAX_ISOC_FRAMES   10
 242
 243 #define BTUSB_INTR_RUNNING      0
 244 #define BTUSB_BULK_RUNNING      1
 245 #define BTUSB_ISOC_RUNNING      2
 246 #define BTUSB_SUSPENDING        3
 247 #define BTUSB_DID_ISO_RESUME    4
 248
 249 struct btusb_data {
 250         struct hci_dev       *hdev;
 251         struct usb_device    *udev;
 252         struct usb_interface *intf;
 253         struct usb_interface *isoc;
 254
 255         spinlock_t lock;
 256
 257         unsigned long flags;
 258
 259         struct work_struct work;
 260         struct work_struct waker;
 261
 262         struct usb_anchor tx_anchor;
 263         struct usb_anchor intr_anchor;
 264         struct usb_anchor bulk_anchor;
 265         struct usb_anchor isoc_anchor;
 266         struct usb_anchor deferred;
 267         int tx_in_flight;
 268         spinlock_t txlock;
 269
 270         struct usb_endpoint_descriptor *intr_ep;
 271         struct usb_endpoint_descriptor *bulk_tx_ep;
 272         struct usb_endpoint_descriptor *bulk_rx_ep;
 273         struct usb_endpoint_descriptor *isoc_tx_ep;
 274         struct usb_endpoint_descriptor *isoc_rx_ep;
 275
 276         __u8 cmdreq_type;
 277
 278         unsigned int sco_num;
 279         int isoc_altsetting;
 280         int suspend_count;
 281 };
 282
 283 static int inc_tx(struct btusb_data *data)
 284 {
 285         unsigned long flags;
 286         int rv;
 287
 288         spin_lock_irqsave(&data->txlock, flags);
 289         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
 290         if (!rv)
 291                 data->tx_in_flight++;
 292         spin_unlock_irqrestore(&data->txlock, flags);
 293
 294         return rv;
 295 }
 296
 297 static void btusb_intr_complete(struct urb *urb)
 298 {
 299         struct hci_dev *hdev = urb->context;
 300         struct btusb_data *data = hci_get_drvdata(hdev);
 301         int err;
 302
 303         BT_DBG("%s urb %p status %d count %d", hdev->name,
 304                                         urb, urb->status, urb->actual_length);
 305
 306         if (!test_bit(HCI_RUNNING, &hdev->flags))
 307                 return;
 308
 309         if (urb->status == 0) {
 310                 hdev->stat.byte_rx += urb->actual_length;
 311
 312                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
 313                                                 urb->transfer_buffer,
 314                                                 urb->actual_length) < 0) {
 315                         BT_ERR("%s corrupted event packet", hdev->name);
 316                         hdev->stat.err_rx++;
 317                 }
 318         }
 319
 320         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 321                 return;
 322
 323         usb_mark_last_busy(data->udev);
 324         usb_anchor_urb(urb, &data->intr_anchor);
 325
 326         err = usb_submit_urb(urb, GFP_ATOMIC);
 327         if (err < 0) {
 328                 /* -EPERM: urb is being killed;
 329                  * -ENODEV: device got disconnected */
 330                 if (err != -EPERM && err != -ENODEV)
 331                         BT_ERR("%s urb %p failed to resubmit (%d)",
 332                                                 hdev->name, urb, -err);
 333                 usb_unanchor_urb(urb);
 334         }
 335 }
 336
 337 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 338 {
 339         struct btusb_data *data = hci_get_drvdata(hdev);
 340         struct urb *urb;
 341         unsigned char *buf;
 342         unsigned int pipe;
 343         int err, size;
 344
 345         BT_DBG("%s", hdev->name);
 346
 347         if (!data->intr_ep)
 348                 return -ENODEV;
 349
 350         urb = usb_alloc_urb(0, mem_flags);
 351         if (!urb)
 352                 return -ENOMEM;
 353
 354         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 355
 356         buf = kmalloc(size, mem_flags);
 357         if (!buf) {
 358                 usb_free_urb(urb);
 359                 return -ENOMEM;
 360         }
 361
 362         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 363
 364         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 365                                                 btusb_intr_complete, hdev,
 366                                                 data->intr_ep->bInterval);
 367
 368         urb->transfer_flags |= URB_FREE_BUFFER;
 369
 370         usb_anchor_urb(urb, &data->intr_anchor);
 371
 372         err = usb_submit_urb(urb, mem_flags);
 373         if (err < 0) {
 374                 if (err != -EPERM && err != -ENODEV)
 375                         BT_ERR("%s urb %p submission failed (%d)",
 376                                                 hdev->name, urb, -err);
 377                 usb_unanchor_urb(urb);
 378         }
 379
 380         usb_free_urb(urb);
 381
 382         return err;
 383 }
 384
 385 static void btusb_bulk_complete(struct urb *urb)
 386 {
 387         struct hci_dev *hdev = urb->context;
 388         struct btusb_data *data = hci_get_drvdata(hdev);
 389         int err;
 390
 391         BT_DBG("%s urb %p status %d count %d", hdev->name,
 392                                         urb, urb->status, urb->actual_length);
 393
 394         if (!test_bit(HCI_RUNNING, &hdev->flags))
 395                 return;
 396
 397         if (urb->status == 0) {
 398                 hdev->stat.byte_rx += urb->actual_length;
 399
 400                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
 401                                                 urb->transfer_buffer,
 402                                                 urb->actual_length) < 0) {
 403                         BT_ERR("%s corrupted ACL packet", hdev->name);
 404                         hdev->stat.err_rx++;
 405                 }
 406         }
 407
 408         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 409                 return;
 410
 411         usb_anchor_urb(urb, &data->bulk_anchor);
 412         usb_mark_last_busy(data->udev);
 413
 414         err = usb_submit_urb(urb, GFP_ATOMIC);
 415         if (err < 0) {
 416                 /* -EPERM: urb is being killed;
 417                  * -ENODEV: device got disconnected */
 418                 if (err != -EPERM && err != -ENODEV)
 419                         BT_ERR("%s urb %p failed to resubmit (%d)",
 420                                                 hdev->name, urb, -err);
 421                 usb_unanchor_urb(urb);
 422         }
 423 }
 424
 425 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 426 {
 427         struct btusb_data *data = hci_get_drvdata(hdev);
 428         struct urb *urb;
 429         unsigned char *buf;
 430         unsigned int pipe;
 431         int err, size = HCI_MAX_FRAME_SIZE;
 432
 433         BT_DBG("%s", hdev->name);
 434
 435         if (!data->bulk_rx_ep)
 436                 return -ENODEV;
 437
 438         urb = usb_alloc_urb(0, mem_flags);
 439         if (!urb)
 440                 return -ENOMEM;
 441
 442         buf = kmalloc(size, mem_flags);
 443         if (!buf) {
 444                 usb_free_urb(urb);
 445                 return -ENOMEM;
 446         }
 447
 448         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 449
 450         usb_fill_bulk_urb(urb, data->udev, pipe,
 451                                         buf, size, btusb_bulk_complete, hdev);
 452
 453         urb->transfer_flags |= URB_FREE_BUFFER;
 454
 455         usb_mark_last_busy(data->udev);
 456         usb_anchor_urb(urb, &data->bulk_anchor);
 457
 458         err = usb_submit_urb(urb, mem_flags);
 459         if (err < 0) {
 460                 if (err != -EPERM && err != -ENODEV)
 461                         BT_ERR("%s urb %p submission failed (%d)",
 462                                                 hdev->name, urb, -err);
 463                 usb_unanchor_urb(urb);
 464         }
 465
 466         usb_free_urb(urb);
 467
 468         return err;
 469 }
 470
 471 static void btusb_isoc_complete(struct urb *urb)
 472 {
 473         struct hci_dev *hdev = urb->context;
 474         struct btusb_data *data = hci_get_drvdata(hdev);
 475         int i, err;
 476
 477         BT_DBG("%s urb %p status %d count %d", hdev->name,
 478                                         urb, urb->status, urb->actual_length);
 479
 480         if (!test_bit(HCI_RUNNING, &hdev->flags))
 481                 return;
 482
 483         if (urb->status == 0) {
 484                 for (i = 0; i < urb->number_of_packets; i++) {
 485                         unsigned int offset = urb->iso_frame_desc[i].offset;
 486                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 487
 488                         if (urb->iso_frame_desc[i].status)
 489                                 continue;
 490
 491                         hdev->stat.byte_rx += length;
 492
 493                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
 494                                                 urb->transfer_buffer + offset,
 495                                                                 length) < 0) {
 496                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 497                                 hdev->stat.err_rx++;
 498                         }
 499                 }
 500         }
 501
 502         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 503                 return;
 504
 505         usb_anchor_urb(urb, &data->isoc_anchor);
 506
 507         err = usb_submit_urb(urb, GFP_ATOMIC);
 508         if (err < 0) {
 509                 /* -EPERM: urb is being killed;
 510                  * -ENODEV: device got disconnected */
 511                 if (err != -EPERM && err != -ENODEV)
 512                         BT_ERR("%s urb %p failed to resubmit (%d)",
 513                                                 hdev->name, urb, -err);
 514                 usb_unanchor_urb(urb);
 515         }
 516 }
 517
 518 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 519 {
 520         int i, offset = 0;
 521
 522         BT_DBG("len %d mtu %d", len, mtu);
 523
 524         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 525                                         i++, offset += mtu, len -= mtu) {
 526                 urb->iso_frame_desc[i].offset = offset;
 527                 urb->iso_frame_desc[i].length = mtu;
 528         }
 529
 530         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 531                 urb->iso_frame_desc[i].offset = offset;
 532                 urb->iso_frame_desc[i].length = len;
 533                 i++;
 534         }
 535
 536         urb->number_of_packets = i;
 537 }
 538
 539 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 540 {
 541         struct btusb_data *data = hci_get_drvdata(hdev);
 542         struct urb *urb;
 543         unsigned char *buf;
 544         unsigned int pipe;
 545         int err, size;
 546
 547         BT_DBG("%s", hdev->name);
 548
 549         if (!data->isoc_rx_ep)
 550                 return -ENODEV;
 551
 552         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 553         if (!urb)
 554                 return -ENOMEM;
 555
 556         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 557                                                 BTUSB_MAX_ISOC_FRAMES;
 558
 559         buf = kmalloc(size, mem_flags);
 560         if (!buf) {
 561                 usb_free_urb(urb);
 562                 return -ENOMEM;
 563         }
 564
 565         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 566
 567         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 568                                 hdev, data->isoc_rx_ep->bInterval);
 569
 570         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
 571
 572         __fill_isoc_descriptor(urb, size,
 573                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 574
 575         usb_anchor_urb(urb, &data->isoc_anchor);
 576
 577         err = usb_submit_urb(urb, mem_flags);
 578         if (err < 0) {
 579                 if (err != -EPERM && err != -ENODEV)
 580                         BT_ERR("%s urb %p submission failed (%d)",
 581                                                 hdev->name, urb, -err);
 582                 usb_unanchor_urb(urb);
 583         }
 584
 585         usb_free_urb(urb);
 586
 587         return err;
 588 }
 589
 590 static void btusb_tx_complete(struct urb *urb)
 591 {
 592         struct sk_buff *skb = urb->context;
 593         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 594         struct btusb_data *data = hci_get_drvdata(hdev);
 595
 596         BT_DBG("%s urb %p status %d count %d", hdev->name,
 597                                         urb, urb->status, urb->actual_length);
 598
 599         if (!test_bit(HCI_RUNNING, &hdev->flags))
 600                 goto done;
 601
 602         if (!urb->status)
 603                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 604         else
 605                 hdev->stat.err_tx++;
 606
 607 done:
 608         spin_lock(&data->txlock);
 609         data->tx_in_flight--;
 610         spin_unlock(&data->txlock);
 611
 612         kfree(urb->setup_packet);
 613
 614         kfree_skb(skb);
 615 }
 616
 617 static void btusb_isoc_tx_complete(struct urb *urb)
 618 {
 619         struct sk_buff *skb = urb->context;
 620         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 621
 622         BT_DBG("%s urb %p status %d count %d", hdev->name,
 623                                         urb, urb->status, urb->actual_length);
 624
 625         if (!test_bit(HCI_RUNNING, &hdev->flags))
 626                 goto done;
 627
 628         if (!urb->status)
 629                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 630         else
 631                 hdev->stat.err_tx++;
 632
 633 done:
 634         kfree(urb->setup_packet);
 635
 636         kfree_skb(skb);
 637 }
 638
 639 static int btusb_open(struct hci_dev *hdev)
 640 {
 641         struct btusb_data *data = hci_get_drvdata(hdev);
 642         int err;
 643
 644         BT_DBG("%s", hdev->name);
 645
 646         err = usb_autopm_get_interface(data->intf);
 647         if (err < 0)
 648                 return err;
 649
 650         data->intf->needs_remote_wakeup = 1;
 651
 652         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 653                 goto done;
 654
 655         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 656                 goto done;
 657
 658         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 659         if (err < 0)
 660                 goto failed;
 661
 662         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 663         if (err < 0) {
 664                 usb_kill_anchored_urbs(&data->intr_anchor);
 665                 goto failed;
 666         }
 667
 668         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 669         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 670
 671 done:
 672         usb_autopm_put_interface(data->intf);
 673         return 0;
 674
 675 failed:
 676         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 677         clear_bit(HCI_RUNNING, &hdev->flags);
 678         usb_autopm_put_interface(data->intf);
 679         return err;
 680 }
 681
 682 static void btusb_stop_traffic(struct btusb_data *data)
 683 {
 684         usb_kill_anchored_urbs(&data->intr_anchor);
 685         usb_kill_anchored_urbs(&data->bulk_anchor);
 686         usb_kill_anchored_urbs(&data->isoc_anchor);
 687 }
 688
 689 static int btusb_close(struct hci_dev *hdev)
 690 {
 691         struct btusb_data *data = hci_get_drvdata(hdev);
 692         int err;
 693
 694         BT_DBG("%s", hdev->name);
 695
 696         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 697                 return 0;
 698
 699         cancel_work_sync(&data->work);
 700         cancel_work_sync(&data->waker);
 701
 702         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 703         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 704         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 705
 706         btusb_stop_traffic(data);
 707         err = usb_autopm_get_interface(data->intf);
 708         if (err < 0)
 709                 goto failed;
 710
 711         data->intf->needs_remote_wakeup = 0;
 712         usb_autopm_put_interface(data->intf);
 713
 714 failed:
 715         usb_scuttle_anchored_urbs(&data->deferred);
 716         return 0;
 717 }
 718
 719 static int btusb_flush(struct hci_dev *hdev)
 720 {
 721         struct btusb_data *data = hci_get_drvdata(hdev);
 722
 723         BT_DBG("%s", hdev->name);
 724
 725         usb_kill_anchored_urbs(&data->tx_anchor);
 726
 727         return 0;
 728 }
 729
 730 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
 731 {
 732         struct btusb_data *data = hci_get_drvdata(hdev);
 733         struct usb_ctrlrequest *dr;
 734         struct urb *urb;
 735         unsigned int pipe;
 736         int err;
 737
 738         BT_DBG("%s", hdev->name);
 739
 740         if (!test_bit(HCI_RUNNING, &hdev->flags))
 741                 return -EBUSY;
 742
 743         skb->dev = (void *) hdev;
 744
 745         switch (bt_cb(skb)->pkt_type) {
 746         case HCI_COMMAND_PKT:
 747                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 748                 if (!urb)
 749                         return -ENOMEM;
 750
 751                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
 752                 if (!dr) {
 753                         usb_free_urb(urb);
 754                         return -ENOMEM;
 755                 }
 756
 757                 dr->bRequestType = data->cmdreq_type;
 758                 dr->bRequest     = 0;
 759                 dr->wIndex       = 0;
 760                 dr->wValue       = 0;
 761                 dr->wLength      = __cpu_to_le16(skb->len);
 762
 763                 pipe = usb_sndctrlpipe(data->udev, 0x00);
 764
 765                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
 766                                 skb->data, skb->len, btusb_tx_complete, skb);
 767
 768                 hdev->stat.cmd_tx++;
 769                 break;
 770
 771         case HCI_ACLDATA_PKT:
 772                 if (!data->bulk_tx_ep)
 773                         return -ENODEV;
 774
 775                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 776                 if (!urb)
 777                         return -ENOMEM;
 778
 779                 pipe = usb_sndbulkpipe(data->udev,
 780                                         data->bulk_tx_ep->bEndpointAddress);
 781
 782                 usb_fill_bulk_urb(urb, data->udev, pipe,
 783                                 skb->data, skb->len, btusb_tx_complete, skb);
 784
 785                 hdev->stat.acl_tx++;
 786                 break;
 787
 788         case HCI_SCODATA_PKT:
 789                 if (!data->isoc_tx_ep || hci_conn_num(hdev, SCO_LINK) < 1)
 790                         return -ENODEV;
 791
 792                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
 793                 if (!urb)
 794                         return -ENOMEM;
 795
 796                 pipe = usb_sndisocpipe(data->udev,
 797                                         data->isoc_tx_ep->bEndpointAddress);
 798
 799                 usb_fill_int_urb(urb, data->udev, pipe,
 800                                 skb->data, skb->len, btusb_isoc_tx_complete,
 801                                 skb, data->isoc_tx_ep->bInterval);
 802
 803                 urb->transfer_flags  = URB_ISO_ASAP;
 804
 805                 __fill_isoc_descriptor(urb, skb->len,
 806                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 807
 808                 hdev->stat.sco_tx++;
 809                 goto skip_waking;
 810
 811         default:
 812                 return -EILSEQ;
 813         }
 814
 815         err = inc_tx(data);
 816         if (err) {
 817                 usb_anchor_urb(urb, &data->deferred);
 818                 schedule_work(&data->waker);
 819                 err = 0;
 820                 goto done;
 821         }
 822
 823 skip_waking:
 824         usb_anchor_urb(urb, &data->tx_anchor);
 825
 826         err = usb_submit_urb(urb, GFP_ATOMIC);
 827         if (err < 0) {
 828                 if (err != -EPERM && err != -ENODEV)
 829                         BT_ERR("%s urb %p submission failed (%d)",
 830                                                 hdev->name, urb, -err);
 831                 kfree(urb->setup_packet);
 832                 usb_unanchor_urb(urb);
 833         } else {
 834                 usb_mark_last_busy(data->udev);
 835         }
 836
 837 done:
 838         usb_free_urb(urb);
 839         return err;
 840 }
 841
 842 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 843 {
 844         struct btusb_data *data = hci_get_drvdata(hdev);
 845
 846         BT_DBG("%s evt %d", hdev->name, evt);
 847
 848         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
 849                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
 850                 schedule_work(&data->work);
 851         }
 852 }
 853
 854 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
 855 {
 856         struct btusb_data *data = hci_get_drvdata(hdev);
 857         struct usb_interface *intf = data->isoc;
 858         struct usb_endpoint_descriptor *ep_desc;
 859         int i, err;
 860
 861         if (!data->isoc)
 862                 return -ENODEV;
 863
 864         err = usb_set_interface(data->udev, 1, altsetting);
 865         if (err < 0) {
 866                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
 867                 return err;
 868         }
 869
 870         data->isoc_altsetting = altsetting;
 871
 872         data->isoc_tx_ep = NULL;
 873         data->isoc_rx_ep = NULL;
 874
 875         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 876                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 877
 878                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
 879                         data->isoc_tx_ep = ep_desc;
 880                         continue;
 881                 }
 882
 883                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
 884                         data->isoc_rx_ep = ep_desc;
 885                         continue;
 886                 }
 887         }
 888
 889         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
 890                 BT_ERR("%s invalid SCO descriptors", hdev->name);
 891                 return -ENODEV;
 892         }
 893
 894         return 0;
 895 }
 896
 897 static void btusb_work(struct work_struct *work)
 898 {
 899         struct btusb_data *data = container_of(work, struct btusb_data, work);
 900         struct hci_dev *hdev = data->hdev;
 901         int new_alts;
 902         int err;
 903
 904         if (data->sco_num > 0) {
 905                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
 906                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
 907                         if (err < 0) {
 908                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 909                                 usb_kill_anchored_urbs(&data->isoc_anchor);
 910                                 return;
 911                         }
 912
 913                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
 914                 }
 915
 916                 if (hdev->voice_setting & 0x0020) {
 917                         static const int alts[3] = { 2, 4, 5 };
 918                         new_alts = alts[data->sco_num - 1];
 919                 } else {
 920                         new_alts = data->sco_num;
 921                 }
 922
 923                 if (data->isoc_altsetting != new_alts) {
 924                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 925                         usb_kill_anchored_urbs(&data->isoc_anchor);
 926
 927                         if (__set_isoc_interface(hdev, new_alts) < 0)
 928                                 return;
 929                 }
 930
 931                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
 932                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
 933                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 934                         else
 935                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
 936                 }
 937         } else {
 938                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 939                 usb_kill_anchored_urbs(&data->isoc_anchor);
 940
 941                 __set_isoc_interface(hdev, 0);
 942                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
 943                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
 944         }
 945 }
 946
 947 static void btusb_waker(struct work_struct *work)
 948 {
 949         struct btusb_data *data = container_of(work, struct btusb_data, waker);
 950         int err;
 951
 952         err = usb_autopm_get_interface(data->intf);
 953         if (err < 0)
 954                 return;
 955
 956         usb_autopm_put_interface(data->intf);
 957 }
 958
 959 static int btusb_setup_bcm92035(struct hci_dev *hdev)
 960 {
 961         struct sk_buff *skb;
 962         u8 val = 0x00;
 963
 964         BT_DBG("%s", hdev->name);
 965
 966         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
 967         if (IS_ERR(skb))
 968                 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
 969         else
 970                 kfree_skb(skb);
 971
 972         return 0;
 973 }
 974
 975 static int btusb_setup_csr(struct hci_dev *hdev)
 976 {
 977         struct hci_rp_read_local_version *rp;
 978         struct sk_buff *skb;
 979         int ret;
 980
 981         BT_DBG("%s", hdev->name);
 982
 983         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
 984                              HCI_INIT_TIMEOUT);
 985         if (IS_ERR(skb)) {
 986                 BT_ERR("Reading local version failed (%ld)", -PTR_ERR(skb));
 987                 return -PTR_ERR(skb);
 988         }
 989
 990         rp = (struct hci_rp_read_local_version *) skb->data;
 991
 992         if (!rp->status) {
 993                 if (le16_to_cpu(rp->manufacturer) != 10) {
 994                         /* Clear the reset quirk since this is not an actual
 995                          * early Bluetooth 1.1 device from CSR.
 996                          */
 997                         clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
 998
 999                         /* These fake CSR controllers have all a broken
1000                          * stored link key handling and so just disable it.
1001                          */
1002                         set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY,
1003                                 &hdev->quirks);
1004                 }
1005         }
1006
1007         ret = -bt_to_errno(rp->status);
1008
1009         kfree_skb(skb);
1010
1011         return ret;
1012 }
1013
1014 struct intel_version {
1015         u8 status;
1016         u8 hw_platform;
1017         u8 hw_variant;
1018         u8 hw_revision;
1019         u8 fw_variant;
1020         u8 fw_revision;
1021         u8 fw_build_num;
1022         u8 fw_build_ww;
1023         u8 fw_build_yy;
1024         u8 fw_patch_num;
1025 } __packed;
1026
1027 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1028                                                 struct intel_version *ver)
1029 {
1030         const struct firmware *fw;
1031         char fwname[64];
1032         int ret;
1033
1034         snprintf(fwname, sizeof(fwname),
1035                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1036                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
1037                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1038                  ver->fw_build_ww, ver->fw_build_yy);
1039
1040         ret = request_firmware(&fw, fwname, &hdev->dev);
1041         if (ret < 0) {
1042                 if (ret == -EINVAL) {
1043                         BT_ERR("%s Intel firmware file request failed (%d)",
1044                                hdev->name, ret);
1045                         return NULL;
1046                 }
1047
1048                 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1049                        hdev->name, fwname, ret);
1050
1051                 /* If the correct firmware patch file is not found, use the
1052                  * default firmware patch file instead
1053                  */
1054                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1055                          ver->hw_platform, ver->hw_variant);
1056                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1057                         BT_ERR("%s failed to open default Intel fw file: %s",
1058                                hdev->name, fwname);
1059                         return NULL;
1060                 }
1061         }
1062
1063         BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1064
1065         return fw;
1066 }
1067
1068 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1069                                       const struct firmware *fw,
1070                                       const u8 **fw_ptr, int *disable_patch)
1071 {
1072         struct sk_buff *skb;
1073         struct hci_command_hdr *cmd;
1074         const u8 *cmd_param;
1075         struct hci_event_hdr *evt = NULL;
1076         const u8 *evt_param = NULL;
1077         int remain = fw->size - (*fw_ptr - fw->data);
1078
1079         /* The first byte indicates the types of the patch command or event.
1080          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1081          * in the current firmware buffer doesn't start with 0x01 or
1082          * the size of remain buffer is smaller than HCI command header,
1083          * the firmware file is corrupted and it should stop the patching
1084          * process.
1085          */
1086         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1087                 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1088                 return -EINVAL;
1089         }
1090         (*fw_ptr)++;
1091         remain--;
1092
1093         cmd = (struct hci_command_hdr *)(*fw_ptr);
1094         *fw_ptr += sizeof(*cmd);
1095         remain -= sizeof(*cmd);
1096
1097         /* Ensure that the remain firmware data is long enough than the length
1098          * of command parameter. If not, the firmware file is corrupted.
1099          */
1100         if (remain < cmd->plen) {
1101                 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1102                 return -EFAULT;
1103         }
1104
1105         /* If there is a command that loads a patch in the firmware
1106          * file, then enable the patch upon success, otherwise just
1107          * disable the manufacturer mode, for example patch activation
1108          * is not required when the default firmware patch file is used
1109          * because there are no patch data to load.
1110          */
1111         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1112                 *disable_patch = 0;
1113
1114         cmd_param = *fw_ptr;
1115         *fw_ptr += cmd->plen;
1116         remain -= cmd->plen;
1117
1118         /* This reads the expected events when the above command is sent to the
1119          * device. Some vendor commands expects more than one events, for
1120          * example command status event followed by vendor specific event.
1121          * For this case, it only keeps the last expected event. so the command
1122          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1123          * last expected event.
1124          */
1125         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1126                 (*fw_ptr)++;
1127                 remain--;
1128
1129                 evt = (struct hci_event_hdr *)(*fw_ptr);
1130                 *fw_ptr += sizeof(*evt);
1131                 remain -= sizeof(*evt);
1132
1133                 if (remain < evt->plen) {
1134                         BT_ERR("%s Intel fw corrupted: invalid evt len",
1135                                hdev->name);
1136                         return -EFAULT;
1137                 }
1138
1139                 evt_param = *fw_ptr;
1140                 *fw_ptr += evt->plen;
1141                 remain -= evt->plen;
1142         }
1143
1144         /* Every HCI commands in the firmware file has its correspond event.
1145          * If event is not found or remain is smaller than zero, the firmware
1146          * file is corrupted.
1147          */
1148         if (!evt || !evt_param || remain < 0) {
1149                 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1150                 return -EFAULT;
1151         }
1152
1153         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1154                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1155         if (IS_ERR(skb)) {
1156                 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1157                        hdev->name, cmd->opcode, PTR_ERR(skb));
1158                 return PTR_ERR(skb);
1159         }
1160
1161         /* It ensures that the returned event matches the event data read from
1162          * the firmware file. At fist, it checks the length and then
1163          * the contents of the event.
1164          */
1165         if (skb->len != evt->plen) {
1166                 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1167                        le16_to_cpu(cmd->opcode));
1168                 kfree_skb(skb);
1169                 return -EFAULT;
1170         }
1171
1172         if (memcmp(skb->data, evt_param, evt->plen)) {
1173                 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1174                        hdev->name, le16_to_cpu(cmd->opcode));
1175                 kfree_skb(skb);
1176                 return -EFAULT;
1177         }
1178         kfree_skb(skb);
1179
1180         return 0;
1181 }
1182
1183 static int btusb_setup_intel(struct hci_dev *hdev)
1184 {
1185         struct sk_buff *skb;
1186         const struct firmware *fw;
1187         const u8 *fw_ptr;
1188         int disable_patch;
1189         struct intel_version *ver;
1190
1191         const u8 mfg_enable[] = { 0x01, 0x00 };
1192         const u8 mfg_disable[] = { 0x00, 0x00 };
1193         const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
1194         const u8 mfg_reset_activate[] = { 0x00, 0x02 };
1195
1196         BT_DBG("%s", hdev->name);
1197
1198         /* The controller has a bug with the first HCI command sent to it
1199          * returning number of completed commands as zero. This would stall the
1200          * command processing in the Bluetooth core.
1201          *
1202          * As a workaround, send HCI Reset command first which will reset the
1203          * number of completed commands and allow normal command processing
1204          * from now on.
1205          */
1206         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1207         if (IS_ERR(skb)) {
1208                 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1209                        hdev->name, PTR_ERR(skb));
1210                 return PTR_ERR(skb);
1211         }
1212         kfree_skb(skb);
1213
1214         /* Read Intel specific controller version first to allow selection of
1215          * which firmware file to load.
1216          *
1217          * The returned information are hardware variant and revision plus
1218          * firmware variant, revision and build number.
1219          */
1220         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1221         if (IS_ERR(skb)) {
1222                 BT_ERR("%s reading Intel fw version command failed (%ld)",
1223                        hdev->name, PTR_ERR(skb));
1224                 return PTR_ERR(skb);
1225         }
1226
1227         if (skb->len != sizeof(*ver)) {
1228                 BT_ERR("%s Intel version event length mismatch", hdev->name);
1229                 kfree_skb(skb);
1230                 return -EIO;
1231         }
1232
1233         ver = (struct intel_version *)skb->data;
1234         if (ver->status) {
1235                 BT_ERR("%s Intel fw version event failed (%02x)", hdev->name,
1236                        ver->status);
1237                 kfree_skb(skb);
1238                 return -bt_to_errno(ver->status);
1239         }
1240
1241         BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1242                 hdev->name, ver->hw_platform, ver->hw_variant,
1243                 ver->hw_revision, ver->fw_variant,  ver->fw_revision,
1244                 ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
1245                 ver->fw_patch_num);
1246
1247         /* fw_patch_num indicates the version of patch the device currently
1248          * have. If there is no patch data in the device, it is always 0x00.
1249          * So, if it is other than 0x00, no need to patch the deivce again.
1250          */
1251         if (ver->fw_patch_num) {
1252                 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1253                         hdev->name, ver->fw_patch_num);
1254                 kfree_skb(skb);
1255                 return 0;
1256         }
1257
1258         /* Opens the firmware patch file based on the firmware version read
1259          * from the controller. If it fails to open the matching firmware
1260          * patch file, it tries to open the default firmware patch file.
1261          * If no patch file is found, allow the device to operate without
1262          * a patch.
1263          */
1264         fw = btusb_setup_intel_get_fw(hdev, ver);
1265         if (!fw) {
1266                 kfree_skb(skb);
1267                 return 0;
1268         }
1269         fw_ptr = fw->data;
1270
1271         /* This Intel specific command enables the manufacturer mode of the
1272          * controller.
1273          *
1274          * Only while this mode is enabled, the driver can download the
1275          * firmware patch data and configuration parameters.
1276          */
1277         skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
1278         if (IS_ERR(skb)) {
1279                 BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
1280                        hdev->name, PTR_ERR(skb));
1281                 release_firmware(fw);
1282                 return PTR_ERR(skb);
1283         }
1284
1285         if (skb->data[0]) {
1286                 u8 evt_status = skb->data[0];
1287                 BT_ERR("%s enable Intel manufacturer mode event failed (%02x)",
1288                        hdev->name, evt_status);
1289                 kfree_skb(skb);
1290                 release_firmware(fw);
1291                 return -bt_to_errno(evt_status);
1292         }
1293         kfree_skb(skb);
1294
1295         disable_patch = 1;
1296
1297         /* The firmware data file consists of list of Intel specific HCI
1298          * commands and its expected events. The first byte indicates the
1299          * type of the message, either HCI command or HCI event.
1300          *
1301          * It reads the command and its expected event from the firmware file,
1302          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1303          * the returned event is compared with the event read from the firmware
1304          * file and it will continue until all the messages are downloaded to
1305          * the controller.
1306          *
1307          * Once the firmware patching is completed successfully,
1308          * the manufacturer mode is disabled with reset and activating the
1309          * downloaded patch.
1310          *
1311          * If the firmware patching fails, the manufacturer mode is
1312          * disabled with reset and deactivating the patch.
1313          *
1314          * If the default patch file is used, no reset is done when disabling
1315          * the manufacturer.
1316          */
1317         while (fw->size > fw_ptr - fw->data) {
1318                 int ret;
1319
1320                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1321                                                  &disable_patch);
1322                 if (ret < 0)
1323                         goto exit_mfg_deactivate;
1324         }
1325
1326         release_firmware(fw);
1327
1328         if (disable_patch)
1329                 goto exit_mfg_disable;
1330
1331         /* Patching completed successfully and disable the manufacturer mode
1332          * with reset and activate the downloaded firmware patches.
1333          */
1334         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
1335                              mfg_reset_activate, HCI_INIT_TIMEOUT);
1336         if (IS_ERR(skb)) {
1337                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1338                        hdev->name, PTR_ERR(skb));
1339                 return PTR_ERR(skb);
1340         }
1341         kfree_skb(skb);
1342
1343         BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1344                 hdev->name);
1345
1346         return 0;
1347
1348 exit_mfg_disable:
1349         /* Disable the manufacturer mode without reset */
1350         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
1351                              HCI_INIT_TIMEOUT);
1352         if (IS_ERR(skb)) {
1353                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1354                        hdev->name, PTR_ERR(skb));
1355                 return PTR_ERR(skb);
1356         }
1357         kfree_skb(skb);
1358
1359         BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1360         return 0;
1361
1362 exit_mfg_deactivate:
1363         release_firmware(fw);
1364
1365         /* Patching failed. Disable the manufacturer mode with reset and
1366          * deactivate the downloaded firmware patches.
1367          */
1368         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
1369                              mfg_reset_deactivate, HCI_INIT_TIMEOUT);
1370         if (IS_ERR(skb)) {
1371                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1372                        hdev->name, PTR_ERR(skb));
1373                 return PTR_ERR(skb);
1374         }
1375         kfree_skb(skb);
1376
1377         BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1378                 hdev->name);
1379
1380         return 0;
1381 }
1382
1383 static int btusb_probe(struct usb_interface *intf,
1384                                 const struct usb_device_id *id)
1385 {
1386         struct usb_endpoint_descriptor *ep_desc;
1387         struct btusb_data *data;
1388         struct hci_dev *hdev;
1389         int i, err;
1390
1391         BT_DBG("intf %p id %p", intf, id);
1392
1393         /* interface numbers are hardcoded in the spec */
1394         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
1395                 return -ENODEV;
1396
1397         if (!id->driver_info) {
1398                 const struct usb_device_id *match;
1399                 match = usb_match_id(intf, blacklist_table);
1400                 if (match)
1401                         id = match;
1402         }
1403
1404         if (id->driver_info == BTUSB_IGNORE)
1405                 return -ENODEV;
1406
1407         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
1408                 return -ENODEV;
1409
1410         if (ignore_csr && id->driver_info & BTUSB_CSR)
1411                 return -ENODEV;
1412
1413         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
1414                 return -ENODEV;
1415
1416         if (id->driver_info & BTUSB_ATH3012) {
1417                 struct usb_device *udev = interface_to_usbdev(intf);
1418
1419                 /* Old firmware would otherwise let ath3k driver load
1420                  * patch and sysconfig files */
1421                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
1422                         return -ENODEV;
1423         }
1424
1425         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
1426         if (!data)
1427                 return -ENOMEM;
1428
1429         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1430                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1431
1432                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
1433                         data->intr_ep = ep_desc;
1434                         continue;
1435                 }
1436
1437                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
1438                         data->bulk_tx_ep = ep_desc;
1439                         continue;
1440                 }
1441
1442                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
1443                         data->bulk_rx_ep = ep_desc;
1444                         continue;
1445                 }
1446         }
1447
1448         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
1449                 return -ENODEV;
1450
1451         data->cmdreq_type = USB_TYPE_CLASS;
1452
1453         data->udev = interface_to_usbdev(intf);
1454         data->intf = intf;
1455
1456         spin_lock_init(&data->lock);
1457
1458         INIT_WORK(&data->work, btusb_work);
1459         INIT_WORK(&data->waker, btusb_waker);
1460         spin_lock_init(&data->txlock);
1461
1462         init_usb_anchor(&data->tx_anchor);
1463         init_usb_anchor(&data->intr_anchor);
1464         init_usb_anchor(&data->bulk_anchor);
1465         init_usb_anchor(&data->isoc_anchor);
1466         init_usb_anchor(&data->deferred);
1467
1468         hdev = hci_alloc_dev();
1469         if (!hdev)
1470                 return -ENOMEM;
1471
1472         hdev->bus = HCI_USB;
1473         hci_set_drvdata(hdev, data);
1474
1475         data->hdev = hdev;
1476
1477         SET_HCIDEV_DEV(hdev, &intf->dev);
1478
1479         hdev->open   = btusb_open;
1480         hdev->close  = btusb_close;
1481         hdev->flush  = btusb_flush;
1482         hdev->send   = btusb_send_frame;
1483         hdev->notify = btusb_notify;
1484
1485         if (id->driver_info & BTUSB_BCM92035)
1486                 hdev->setup = btusb_setup_bcm92035;
1487
1488         if (id->driver_info & BTUSB_INTEL) {
1489                 usb_enable_autosuspend(data->udev);
1490                 hdev->setup = btusb_setup_intel;
1491         }
1492
1493         /* Interface numbers are hardcoded in the specification */
1494         data->isoc = usb_ifnum_to_if(data->udev, 1);
1495
1496         if (!reset)
1497                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1498
1499         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1500                 if (!disable_scofix)
1501                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1502         }
1503
1504         if (id->driver_info & BTUSB_BROKEN_ISOC)
1505                 data->isoc = NULL;
1506
1507         if (id->driver_info & BTUSB_DIGIANSWER) {
1508                 data->cmdreq_type = USB_TYPE_VENDOR;
1509                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1510         }
1511
1512         if (id->driver_info & BTUSB_CSR) {
1513                 struct usb_device *udev = data->udev;
1514                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
1515
1516                 /* Old firmware would otherwise execute USB reset */
1517                 if (bcdDevice < 0x117)
1518                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1519
1520                 /* Fake CSR devices with broken commands */
1521                 if (bcdDevice <= 0x100)
1522                         hdev->setup = btusb_setup_csr;
1523         }
1524
1525         if (id->driver_info & BTUSB_SNIFFER) {
1526                 struct usb_device *udev = data->udev;
1527
1528                 /* New sniffer firmware has crippled HCI interface */
1529                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1530                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1531
1532                 data->isoc = NULL;
1533         }
1534
1535         if (data->isoc) {
1536                 err = usb_driver_claim_interface(&btusb_driver,
1537                                                         data->isoc, data);
1538                 if (err < 0) {
1539                         hci_free_dev(hdev);
1540                         return err;
1541                 }
1542         }
1543
1544         err = hci_register_dev(hdev);
1545         if (err < 0) {
1546                 hci_free_dev(hdev);
1547                 return err;
1548         }
1549
1550         usb_set_intfdata(intf, data);
1551
1552         return 0;
1553 }
1554
1555 static void btusb_disconnect(struct usb_interface *intf)
1556 {
1557         struct btusb_data *data = usb_get_intfdata(intf);
1558         struct hci_dev *hdev;
1559
1560         BT_DBG("intf %p", intf);
1561
1562         if (!data)
1563                 return;
1564
1565         hdev = data->hdev;
1566         usb_set_intfdata(data->intf, NULL);
1567
1568         if (data->isoc)
1569                 usb_set_intfdata(data->isoc, NULL);
1570
1571         hci_unregister_dev(hdev);
1572
1573         if (intf == data->isoc)
1574                 usb_driver_release_interface(&btusb_driver, data->intf);
1575         else if (data->isoc)
1576                 usb_driver_release_interface(&btusb_driver, data->isoc);
1577
1578         hci_free_dev(hdev);
1579 }
1580
1581 #ifdef CONFIG_PM
1582 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1583 {
1584         struct btusb_data *data = usb_get_intfdata(intf);
1585
1586         BT_DBG("intf %p", intf);
1587
1588         if (data->suspend_count++)
1589                 return 0;
1590
1591         spin_lock_irq(&data->txlock);
1592         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1593                 set_bit(BTUSB_SUSPENDING, &data->flags);
1594                 spin_unlock_irq(&data->txlock);
1595         } else {
1596                 spin_unlock_irq(&data->txlock);
1597                 data->suspend_count--;
1598                 return -EBUSY;
1599         }
1600
1601         cancel_work_sync(&data->work);
1602
1603         btusb_stop_traffic(data);
1604         usb_kill_anchored_urbs(&data->tx_anchor);
1605
1606         return 0;
1607 }
1608
1609 static void play_deferred(struct btusb_data *data)
1610 {
1611         struct urb *urb;
1612         int err;
1613
1614         while ((urb = usb_get_from_anchor(&data->deferred))) {
1615                 err = usb_submit_urb(urb, GFP_ATOMIC);
1616                 if (err < 0)
1617                         break;
1618
1619                 data->tx_in_flight++;
1620         }
1621         usb_scuttle_anchored_urbs(&data->deferred);
1622 }
1623
1624 static int btusb_resume(struct usb_interface *intf)
1625 {
1626         struct btusb_data *data = usb_get_intfdata(intf);
1627         struct hci_dev *hdev = data->hdev;
1628         int err = 0;
1629
1630         BT_DBG("intf %p", intf);
1631
1632         if (--data->suspend_count)
1633                 return 0;
1634
1635         if (!test_bit(HCI_RUNNING, &hdev->flags))
1636                 goto done;
1637
1638         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1639                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1640                 if (err < 0) {
1641                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1642                         goto failed;
1643                 }
1644         }
1645
1646         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1647                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1648                 if (err < 0) {
1649                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1650                         goto failed;
1651                 }
1652
1653                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1654         }
1655
1656         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1657                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1658                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1659                 else
1660                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1661         }
1662
1663         spin_lock_irq(&data->txlock);
1664         play_deferred(data);
1665         clear_bit(BTUSB_SUSPENDING, &data->flags);
1666         spin_unlock_irq(&data->txlock);
1667         schedule_work(&data->work);
1668
1669         return 0;
1670
1671 failed:
1672         usb_scuttle_anchored_urbs(&data->deferred);
1673 done:
1674         spin_lock_irq(&data->txlock);
1675         clear_bit(BTUSB_SUSPENDING, &data->flags);
1676         spin_unlock_irq(&data->txlock);
1677
1678         return err;
1679 }
1680 #endif
1681
1682 static struct usb_driver btusb_driver = {
1683         .name           = "btusb",
1684         .probe          = btusb_probe,
1685         .disconnect     = btusb_disconnect,
1686 #ifdef CONFIG_PM
1687         .suspend        = btusb_suspend,
1688         .resume         = btusb_resume,
1689 #endif
1690         .id_table       = btusb_table,
1691         .supports_autosuspend = 1,
1692         .disable_hub_initiated_lpm = 1,
1693 };
1694
1695 module_usb_driver(btusb_driver);
1696
1697 module_param(ignore_dga, bool, 0644);
1698 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1699
1700 module_param(ignore_csr, bool, 0644);
1701 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1702
1703 module_param(ignore_sniffer, bool, 0644);
1704 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1705
1706 module_param(disable_scofix, bool, 0644);
1707 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1708
1709 module_param(force_scofix, bool, 0644);
1710 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1711
1712 module_param(reset, bool, 0644);
1713 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1714
1715 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1716 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1717 MODULE_VERSION(VERSION);
1718 MODULE_LICENSE("GPL");