drivers/bluetooth/btusb.c

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