linux/drivers/bluetooth/btusb.c
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   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
  33static bool ignore_dga;
  34static bool ignore_csr;
  35static bool ignore_sniffer;
  36static bool disable_scofix;
  37static bool force_scofix;
  38
  39static bool reset = 1;
  40
  41static 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
  53static const struct usb_device_id btusb_table[] = {
  54        /* Generic Bluetooth USB device */
  55        { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  56
  57        /* Apple-specific (Broadcom) devices */
  58        { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01) },
  59
  60        /* MediaTek MT76x0E */
  61        { USB_DEVICE(0x0e8d, 0x763f) },
  62
  63        /* Broadcom SoftSailing reporting vendor specific */
  64        { USB_DEVICE(0x0a5c, 0x21e1) },
  65
  66        /* Apple MacBookPro 7,1 */
  67        { USB_DEVICE(0x05ac, 0x8213) },
  68
  69        /* Apple iMac11,1 */
  70        { USB_DEVICE(0x05ac, 0x8215) },
  71
  72        /* Apple MacBookPro6,2 */
  73        { USB_DEVICE(0x05ac, 0x8218) },
  74
  75        /* Apple MacBookAir3,1, MacBookAir3,2 */
  76        { USB_DEVICE(0x05ac, 0x821b) },
  77
  78        /* Apple MacBookAir4,1 */
  79        { USB_DEVICE(0x05ac, 0x821f) },
  80
  81        /* Apple MacBookPro8,2 */
  82        { USB_DEVICE(0x05ac, 0x821a) },
  83
  84        /* Apple MacMini5,1 */
  85        { USB_DEVICE(0x05ac, 0x8281) },
  86
  87        /* AVM BlueFRITZ! USB v2.0 */
  88        { USB_DEVICE(0x057c, 0x3800) },
  89
  90        /* Bluetooth Ultraport Module from IBM */
  91        { USB_DEVICE(0x04bf, 0x030a) },
  92
  93        /* ALPS Modules with non-standard id */
  94        { USB_DEVICE(0x044e, 0x3001) },
  95        { USB_DEVICE(0x044e, 0x3002) },
  96
  97        /* Ericsson with non-standard id */
  98        { USB_DEVICE(0x0bdb, 0x1002) },
  99
 100        /* Canyon CN-BTU1 with HID interfaces */
 101        { USB_DEVICE(0x0c10, 0x0000) },
 102
 103        /* Broadcom BCM20702A0 */
 104        { USB_DEVICE(0x0b05, 0x17b5) },
 105        { USB_DEVICE(0x0b05, 0x17cb) },
 106        { USB_DEVICE(0x04ca, 0x2003) },
 107        { USB_DEVICE(0x0489, 0xe042) },
 108        { USB_DEVICE(0x413c, 0x8197) },
 109
 110        /* Foxconn - Hon Hai */
 111        { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01) },
 112
 113        /*Broadcom devices with vendor specific id */
 114        { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01) },
 115
 116        /* Belkin F8065bf - Broadcom based */
 117        { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01) },
 118
 119        { }     /* Terminating entry */
 120};
 121
 122MODULE_DEVICE_TABLE(usb, btusb_table);
 123
 124static const struct usb_device_id blacklist_table[] = {
 125        /* CSR BlueCore devices */
 126        { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 127
 128        /* Broadcom BCM2033 without firmware */
 129        { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 130
 131        /* Atheros 3011 with sflash firmware */
 132        { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 133        { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 134        { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 135        { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 136        { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 137        { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 138
 139        /* Atheros AR9285 Malbec with sflash firmware */
 140        { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 141
 142        /* Atheros 3012 with sflash firmware */
 143        { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 144        { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 145        { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 146        { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 147        { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 148        { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 149        { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 150        { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 151        { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 152        { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 153        { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 154        { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 155        { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 156        { USB_DEVICE(0x0cf3, 0xe005), .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(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 160        { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 161        { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 162        { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 163        { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 164        { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 165        { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 166        { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 167        { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 168        { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 169
 170        /* Atheros AR5BBU12 with sflash firmware */
 171        { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 172
 173        /* Atheros AR5BBU12 with sflash firmware */
 174        { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 175        { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 176
 177        /* Broadcom BCM2035 */
 178        { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 179        { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 180        { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 181
 182        /* Broadcom BCM2045 */
 183        { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 184        { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 185
 186        /* IBM/Lenovo ThinkPad with Broadcom chip */
 187        { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 188        { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 189
 190        /* HP laptop with Broadcom chip */
 191        { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 192
 193        /* Dell laptop with Broadcom chip */
 194        { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 195
 196        /* Dell Wireless 370 and 410 devices */
 197        { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 198        { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 199
 200        /* Belkin F8T012 and F8T013 devices */
 201        { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 202        { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 203
 204        /* Asus WL-BTD202 device */
 205        { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 206
 207        /* Kensington Bluetooth USB adapter */
 208        { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 209
 210        /* RTX Telecom based adapters with buggy SCO support */
 211        { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 212        { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 213
 214        /* CONWISE Technology based adapters with buggy SCO support */
 215        { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 216
 217        /* Digianswer devices */
 218        { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 219        { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 220
 221        /* CSR BlueCore Bluetooth Sniffer */
 222        { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
 223
 224        /* Frontline ComProbe Bluetooth Sniffer */
 225        { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
 226
 227        /* Intel Bluetooth device */
 228        { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 229        { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
 230
 231        { }     /* Terminating entry */
 232};
 233
 234#define BTUSB_MAX_ISOC_FRAMES   10
 235
 236#define BTUSB_INTR_RUNNING      0
 237#define BTUSB_BULK_RUNNING      1
 238#define BTUSB_ISOC_RUNNING      2
 239#define BTUSB_SUSPENDING        3
 240#define BTUSB_DID_ISO_RESUME    4
 241
 242struct btusb_data {
 243        struct hci_dev       *hdev;
 244        struct usb_device    *udev;
 245        struct usb_interface *intf;
 246        struct usb_interface *isoc;
 247
 248        spinlock_t lock;
 249
 250        unsigned long flags;
 251
 252        struct work_struct work;
 253        struct work_struct waker;
 254
 255        struct usb_anchor tx_anchor;
 256        struct usb_anchor intr_anchor;
 257        struct usb_anchor bulk_anchor;
 258        struct usb_anchor isoc_anchor;
 259        struct usb_anchor deferred;
 260        int tx_in_flight;
 261        spinlock_t txlock;
 262
 263        struct usb_endpoint_descriptor *intr_ep;
 264        struct usb_endpoint_descriptor *bulk_tx_ep;
 265        struct usb_endpoint_descriptor *bulk_rx_ep;
 266        struct usb_endpoint_descriptor *isoc_tx_ep;
 267        struct usb_endpoint_descriptor *isoc_rx_ep;
 268
 269        __u8 cmdreq_type;
 270
 271        unsigned int sco_num;
 272        int isoc_altsetting;
 273        int suspend_count;
 274};
 275
 276static int inc_tx(struct btusb_data *data)
 277{
 278        unsigned long flags;
 279        int rv;
 280
 281        spin_lock_irqsave(&data->txlock, flags);
 282        rv = test_bit(BTUSB_SUSPENDING, &data->flags);
 283        if (!rv)
 284                data->tx_in_flight++;
 285        spin_unlock_irqrestore(&data->txlock, flags);
 286
 287        return rv;
 288}
 289
 290static void btusb_intr_complete(struct urb *urb)
 291{
 292        struct hci_dev *hdev = urb->context;
 293        struct btusb_data *data = hci_get_drvdata(hdev);
 294        int err;
 295
 296        BT_DBG("%s urb %p status %d count %d", hdev->name,
 297                                        urb, urb->status, urb->actual_length);
 298
 299        if (!test_bit(HCI_RUNNING, &hdev->flags))
 300                return;
 301
 302        if (urb->status == 0) {
 303                hdev->stat.byte_rx += urb->actual_length;
 304
 305                if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
 306                                                urb->transfer_buffer,
 307                                                urb->actual_length) < 0) {
 308                        BT_ERR("%s corrupted event packet", hdev->name);
 309                        hdev->stat.err_rx++;
 310                }
 311        }
 312
 313        if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 314                return;
 315
 316        usb_mark_last_busy(data->udev);
 317        usb_anchor_urb(urb, &data->intr_anchor);
 318
 319        err = usb_submit_urb(urb, GFP_ATOMIC);
 320        if (err < 0) {
 321                /* -EPERM: urb is being killed;
 322                 * -ENODEV: device got disconnected */
 323                if (err != -EPERM && err != -ENODEV)
 324                        BT_ERR("%s urb %p failed to resubmit (%d)",
 325                                                hdev->name, urb, -err);
 326                usb_unanchor_urb(urb);
 327        }
 328}
 329
 330static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 331{
 332        struct btusb_data *data = hci_get_drvdata(hdev);
 333        struct urb *urb;
 334        unsigned char *buf;
 335        unsigned int pipe;
 336        int err, size;
 337
 338        BT_DBG("%s", hdev->name);
 339
 340        if (!data->intr_ep)
 341                return -ENODEV;
 342
 343        urb = usb_alloc_urb(0, mem_flags);
 344        if (!urb)
 345                return -ENOMEM;
 346
 347        size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 348
 349        buf = kmalloc(size, mem_flags);
 350        if (!buf) {
 351                usb_free_urb(urb);
 352                return -ENOMEM;
 353        }
 354
 355        pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 356
 357        usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 358                                                btusb_intr_complete, hdev,
 359                                                data->intr_ep->bInterval);
 360
 361        urb->transfer_flags |= URB_FREE_BUFFER;
 362
 363        usb_anchor_urb(urb, &data->intr_anchor);
 364
 365        err = usb_submit_urb(urb, mem_flags);
 366        if (err < 0) {
 367                if (err != -EPERM && err != -ENODEV)
 368                        BT_ERR("%s urb %p submission failed (%d)",
 369                                                hdev->name, urb, -err);
 370                usb_unanchor_urb(urb);
 371        }
 372
 373        usb_free_urb(urb);
 374
 375        return err;
 376}
 377
 378static void btusb_bulk_complete(struct urb *urb)
 379{
 380        struct hci_dev *hdev = urb->context;
 381        struct btusb_data *data = hci_get_drvdata(hdev);
 382        int err;
 383
 384        BT_DBG("%s urb %p status %d count %d", hdev->name,
 385                                        urb, urb->status, urb->actual_length);
 386
 387        if (!test_bit(HCI_RUNNING, &hdev->flags))
 388                return;
 389
 390        if (urb->status == 0) {
 391                hdev->stat.byte_rx += urb->actual_length;
 392
 393                if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
 394                                                urb->transfer_buffer,
 395                                                urb->actual_length) < 0) {
 396                        BT_ERR("%s corrupted ACL packet", hdev->name);
 397                        hdev->stat.err_rx++;
 398                }
 399        }
 400
 401        if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 402                return;
 403
 404        usb_anchor_urb(urb, &data->bulk_anchor);
 405        usb_mark_last_busy(data->udev);
 406
 407        err = usb_submit_urb(urb, GFP_ATOMIC);
 408        if (err < 0) {
 409                /* -EPERM: urb is being killed;
 410                 * -ENODEV: device got disconnected */
 411                if (err != -EPERM && err != -ENODEV)
 412                        BT_ERR("%s urb %p failed to resubmit (%d)",
 413                                                hdev->name, urb, -err);
 414                usb_unanchor_urb(urb);
 415        }
 416}
 417
 418static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 419{
 420        struct btusb_data *data = hci_get_drvdata(hdev);
 421        struct urb *urb;
 422        unsigned char *buf;
 423        unsigned int pipe;
 424        int err, size = HCI_MAX_FRAME_SIZE;
 425
 426        BT_DBG("%s", hdev->name);
 427
 428        if (!data->bulk_rx_ep)
 429                return -ENODEV;
 430
 431        urb = usb_alloc_urb(0, mem_flags);
 432        if (!urb)
 433                return -ENOMEM;
 434
 435        buf = kmalloc(size, mem_flags);
 436        if (!buf) {
 437                usb_free_urb(urb);
 438                return -ENOMEM;
 439        }
 440
 441        pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 442
 443        usb_fill_bulk_urb(urb, data->udev, pipe,
 444                                        buf, size, btusb_bulk_complete, hdev);
 445
 446        urb->transfer_flags |= URB_FREE_BUFFER;
 447
 448        usb_mark_last_busy(data->udev);
 449        usb_anchor_urb(urb, &data->bulk_anchor);
 450
 451        err = usb_submit_urb(urb, mem_flags);
 452        if (err < 0) {
 453                if (err != -EPERM && err != -ENODEV)
 454                        BT_ERR("%s urb %p submission failed (%d)",
 455                                                hdev->name, urb, -err);
 456                usb_unanchor_urb(urb);
 457        }
 458
 459        usb_free_urb(urb);
 460
 461        return err;
 462}
 463
 464static void btusb_isoc_complete(struct urb *urb)
 465{
 466        struct hci_dev *hdev = urb->context;
 467        struct btusb_data *data = hci_get_drvdata(hdev);
 468        int i, err;
 469
 470        BT_DBG("%s urb %p status %d count %d", hdev->name,
 471                                        urb, urb->status, urb->actual_length);
 472
 473        if (!test_bit(HCI_RUNNING, &hdev->flags))
 474                return;
 475
 476        if (urb->status == 0) {
 477                for (i = 0; i < urb->number_of_packets; i++) {
 478                        unsigned int offset = urb->iso_frame_desc[i].offset;
 479                        unsigned int length = urb->iso_frame_desc[i].actual_length;
 480
 481                        if (urb->iso_frame_desc[i].status)
 482                                continue;
 483
 484                        hdev->stat.byte_rx += length;
 485
 486                        if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
 487                                                urb->transfer_buffer + offset,
 488                                                                length) < 0) {
 489                                BT_ERR("%s corrupted SCO packet", hdev->name);
 490                                hdev->stat.err_rx++;
 491                        }
 492                }
 493        }
 494
 495        if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 496                return;
 497
 498        usb_anchor_urb(urb, &data->isoc_anchor);
 499
 500        err = usb_submit_urb(urb, GFP_ATOMIC);
 501        if (err < 0) {
 502                /* -EPERM: urb is being killed;
 503                 * -ENODEV: device got disconnected */
 504                if (err != -EPERM && err != -ENODEV)
 505                        BT_ERR("%s urb %p failed to resubmit (%d)",
 506                                                hdev->name, urb, -err);
 507                usb_unanchor_urb(urb);
 508        }
 509}
 510
 511static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 512{
 513        int i, offset = 0;
 514
 515        BT_DBG("len %d mtu %d", len, mtu);
 516
 517        for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 518                                        i++, offset += mtu, len -= mtu) {
 519                urb->iso_frame_desc[i].offset = offset;
 520                urb->iso_frame_desc[i].length = mtu;
 521        }
 522
 523        if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 524                urb->iso_frame_desc[i].offset = offset;
 525                urb->iso_frame_desc[i].length = len;
 526                i++;
 527        }
 528
 529        urb->number_of_packets = i;
 530}
 531
 532static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 533{
 534        struct btusb_data *data = hci_get_drvdata(hdev);
 535        struct urb *urb;
 536        unsigned char *buf;
 537        unsigned int pipe;
 538        int err, size;
 539
 540        BT_DBG("%s", hdev->name);
 541
 542        if (!data->isoc_rx_ep)
 543                return -ENODEV;
 544
 545        urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 546        if (!urb)
 547                return -ENOMEM;
 548
 549        size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 550                                                BTUSB_MAX_ISOC_FRAMES;
 551
 552        buf = kmalloc(size, mem_flags);
 553        if (!buf) {
 554                usb_free_urb(urb);
 555                return -ENOMEM;
 556        }
 557
 558        pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 559
 560        usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 561                                hdev, data->isoc_rx_ep->bInterval);
 562
 563        urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
 564
 565        __fill_isoc_descriptor(urb, size,
 566                        le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 567
 568        usb_anchor_urb(urb, &data->isoc_anchor);
 569
 570        err = usb_submit_urb(urb, mem_flags);
 571        if (err < 0) {
 572                if (err != -EPERM && err != -ENODEV)
 573                        BT_ERR("%s urb %p submission failed (%d)",
 574                                                hdev->name, urb, -err);
 575                usb_unanchor_urb(urb);
 576        }
 577
 578        usb_free_urb(urb);
 579
 580        return err;
 581}
 582
 583static void btusb_tx_complete(struct urb *urb)
 584{
 585        struct sk_buff *skb = urb->context;
 586        struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 587        struct btusb_data *data = hci_get_drvdata(hdev);
 588
 589        BT_DBG("%s urb %p status %d count %d", hdev->name,
 590                                        urb, urb->status, urb->actual_length);
 591
 592        if (!test_bit(HCI_RUNNING, &hdev->flags))
 593                goto done;
 594
 595        if (!urb->status)
 596                hdev->stat.byte_tx += urb->transfer_buffer_length;
 597        else
 598                hdev->stat.err_tx++;
 599
 600done:
 601        spin_lock(&data->txlock);
 602        data->tx_in_flight--;
 603        spin_unlock(&data->txlock);
 604
 605        kfree(urb->setup_packet);
 606
 607        kfree_skb(skb);
 608}
 609
 610static void btusb_isoc_tx_complete(struct urb *urb)
 611{
 612        struct sk_buff *skb = urb->context;
 613        struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 614
 615        BT_DBG("%s urb %p status %d count %d", hdev->name,
 616                                        urb, urb->status, urb->actual_length);
 617
 618        if (!test_bit(HCI_RUNNING, &hdev->flags))
 619                goto done;
 620
 621        if (!urb->status)
 622                hdev->stat.byte_tx += urb->transfer_buffer_length;
 623        else
 624                hdev->stat.err_tx++;
 625
 626done:
 627        kfree(urb->setup_packet);
 628
 629        kfree_skb(skb);
 630}
 631
 632static int btusb_open(struct hci_dev *hdev)
 633{
 634        struct btusb_data *data = hci_get_drvdata(hdev);
 635        int err;
 636
 637        BT_DBG("%s", hdev->name);
 638
 639        err = usb_autopm_get_interface(data->intf);
 640        if (err < 0)
 641                return err;
 642
 643        data->intf->needs_remote_wakeup = 1;
 644
 645        if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 646                goto done;
 647
 648        if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 649                goto done;
 650
 651        err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 652        if (err < 0)
 653                goto failed;
 654
 655        err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 656        if (err < 0) {
 657                usb_kill_anchored_urbs(&data->intr_anchor);
 658                goto failed;
 659        }
 660
 661        set_bit(BTUSB_BULK_RUNNING, &data->flags);
 662        btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 663
 664done:
 665        usb_autopm_put_interface(data->intf);
 666        return 0;
 667
 668failed:
 669        clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 670        clear_bit(HCI_RUNNING, &hdev->flags);
 671        usb_autopm_put_interface(data->intf);
 672        return err;
 673}
 674
 675static void btusb_stop_traffic(struct btusb_data *data)
 676{
 677        usb_kill_anchored_urbs(&data->intr_anchor);
 678        usb_kill_anchored_urbs(&data->bulk_anchor);
 679        usb_kill_anchored_urbs(&data->isoc_anchor);
 680}
 681
 682static int btusb_close(struct hci_dev *hdev)
 683{
 684        struct btusb_data *data = hci_get_drvdata(hdev);
 685        int err;
 686
 687        BT_DBG("%s", hdev->name);
 688
 689        if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 690                return 0;
 691
 692        cancel_work_sync(&data->work);
 693        cancel_work_sync(&data->waker);
 694
 695        clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 696        clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 697        clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 698
 699        btusb_stop_traffic(data);
 700        err = usb_autopm_get_interface(data->intf);
 701        if (err < 0)
 702                goto failed;
 703
 704        data->intf->needs_remote_wakeup = 0;
 705        usb_autopm_put_interface(data->intf);
 706
 707failed:
 708        usb_scuttle_anchored_urbs(&data->deferred);
 709        return 0;
 710}
 711
 712static int btusb_flush(struct hci_dev *hdev)
 713{
 714        struct btusb_data *data = hci_get_drvdata(hdev);
 715
 716        BT_DBG("%s", hdev->name);
 717
 718        usb_kill_anchored_urbs(&data->tx_anchor);
 719
 720        return 0;
 721}
 722
 723static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
 724{
 725        struct btusb_data *data = hci_get_drvdata(hdev);
 726        struct usb_ctrlrequest *dr;
 727        struct urb *urb;
 728        unsigned int pipe;
 729        int err;
 730
 731        BT_DBG("%s", hdev->name);
 732
 733        if (!test_bit(HCI_RUNNING, &hdev->flags))
 734                return -EBUSY;
 735
 736        skb->dev = (void *) hdev;
 737
 738        switch (bt_cb(skb)->pkt_type) {
 739        case HCI_COMMAND_PKT:
 740                urb = usb_alloc_urb(0, GFP_ATOMIC);
 741                if (!urb)
 742                        return -ENOMEM;
 743
 744                dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
 745                if (!dr) {
 746                        usb_free_urb(urb);
 747                        return -ENOMEM;
 748                }
 749
 750                dr->bRequestType = data->cmdreq_type;
 751                dr->bRequest     = 0;
 752                dr->wIndex       = 0;
 753                dr->wValue       = 0;
 754                dr->wLength      = __cpu_to_le16(skb->len);
 755
 756                pipe = usb_sndctrlpipe(data->udev, 0x00);
 757
 758                usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
 759                                skb->data, skb->len, btusb_tx_complete, skb);
 760
 761                hdev->stat.cmd_tx++;
 762                break;
 763
 764        case HCI_ACLDATA_PKT:
 765                if (!data->bulk_tx_ep)
 766                        return -ENODEV;
 767
 768                urb = usb_alloc_urb(0, GFP_ATOMIC);
 769                if (!urb)
 770                        return -ENOMEM;
 771
 772                pipe = usb_sndbulkpipe(data->udev,
 773                                        data->bulk_tx_ep->bEndpointAddress);
 774
 775                usb_fill_bulk_urb(urb, data->udev, pipe,
 776                                skb->data, skb->len, btusb_tx_complete, skb);
 777
 778                hdev->stat.acl_tx++;
 779                break;
 780
 781        case HCI_SCODATA_PKT:
 782                if (!data->isoc_tx_ep || hci_conn_num(hdev, SCO_LINK) < 1)
 783                        return -ENODEV;
 784
 785                urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
 786                if (!urb)
 787                        return -ENOMEM;
 788
 789                pipe = usb_sndisocpipe(data->udev,
 790                                        data->isoc_tx_ep->bEndpointAddress);
 791
 792                usb_fill_int_urb(urb, data->udev, pipe,
 793                                skb->data, skb->len, btusb_isoc_tx_complete,
 794                                skb, data->isoc_tx_ep->bInterval);
 795
 796                urb->transfer_flags  = URB_ISO_ASAP;
 797
 798                __fill_isoc_descriptor(urb, skb->len,
 799                                le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 800
 801                hdev->stat.sco_tx++;
 802                goto skip_waking;
 803
 804        default:
 805                return -EILSEQ;
 806        }
 807
 808        err = inc_tx(data);
 809        if (err) {
 810                usb_anchor_urb(urb, &data->deferred);
 811                schedule_work(&data->waker);
 812                err = 0;
 813                goto done;
 814        }
 815
 816skip_waking:
 817        usb_anchor_urb(urb, &data->tx_anchor);
 818
 819        err = usb_submit_urb(urb, GFP_ATOMIC);
 820        if (err < 0) {
 821                if (err != -EPERM && err != -ENODEV)
 822                        BT_ERR("%s urb %p submission failed (%d)",
 823                                                hdev->name, urb, -err);
 824                kfree(urb->setup_packet);
 825                usb_unanchor_urb(urb);
 826        } else {
 827                usb_mark_last_busy(data->udev);
 828        }
 829
 830done:
 831        usb_free_urb(urb);
 832        return err;
 833}
 834
 835static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 836{
 837        struct btusb_data *data = hci_get_drvdata(hdev);
 838
 839        BT_DBG("%s evt %d", hdev->name, evt);
 840
 841        if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
 842                data->sco_num = hci_conn_num(hdev, SCO_LINK);
 843                schedule_work(&data->work);
 844        }
 845}
 846
 847static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
 848{
 849        struct btusb_data *data = hci_get_drvdata(hdev);
 850        struct usb_interface *intf = data->isoc;
 851        struct usb_endpoint_descriptor *ep_desc;
 852        int i, err;
 853
 854        if (!data->isoc)
 855                return -ENODEV;
 856
 857        err = usb_set_interface(data->udev, 1, altsetting);
 858        if (err < 0) {
 859                BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
 860                return err;
 861        }
 862
 863        data->isoc_altsetting = altsetting;
 864
 865        data->isoc_tx_ep = NULL;
 866        data->isoc_rx_ep = NULL;
 867
 868        for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 869                ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 870
 871                if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
 872                        data->isoc_tx_ep = ep_desc;
 873                        continue;
 874                }
 875
 876                if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
 877                        data->isoc_rx_ep = ep_desc;
 878                        continue;
 879                }
 880        }
 881
 882        if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
 883                BT_ERR("%s invalid SCO descriptors", hdev->name);
 884                return -ENODEV;
 885        }
 886
 887        return 0;
 888}
 889
 890static void btusb_work(struct work_struct *work)
 891{
 892        struct btusb_data *data = container_of(work, struct btusb_data, work);
 893        struct hci_dev *hdev = data->hdev;
 894        int new_alts;
 895        int err;
 896
 897        if (data->sco_num > 0) {
 898                if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
 899                        err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
 900                        if (err < 0) {
 901                                clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 902                                usb_kill_anchored_urbs(&data->isoc_anchor);
 903                                return;
 904                        }
 905
 906                        set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
 907                }
 908
 909                if (hdev->voice_setting & 0x0020) {
 910                        static const int alts[3] = { 2, 4, 5 };
 911                        new_alts = alts[data->sco_num - 1];
 912                } else {
 913                        new_alts = data->sco_num;
 914                }
 915
 916                if (data->isoc_altsetting != new_alts) {
 917                        clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 918                        usb_kill_anchored_urbs(&data->isoc_anchor);
 919
 920                        if (__set_isoc_interface(hdev, new_alts) < 0)
 921                                return;
 922                }
 923
 924                if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
 925                        if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
 926                                clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 927                        else
 928                                btusb_submit_isoc_urb(hdev, GFP_KERNEL);
 929                }
 930        } else {
 931                clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 932                usb_kill_anchored_urbs(&data->isoc_anchor);
 933
 934                __set_isoc_interface(hdev, 0);
 935                if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
 936                        usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
 937        }
 938}
 939
 940static void btusb_waker(struct work_struct *work)
 941{
 942        struct btusb_data *data = container_of(work, struct btusb_data, waker);
 943        int err;
 944
 945        err = usb_autopm_get_interface(data->intf);
 946        if (err < 0)
 947                return;
 948
 949        usb_autopm_put_interface(data->intf);
 950}
 951
 952static int btusb_setup_bcm92035(struct hci_dev *hdev)
 953{
 954        struct sk_buff *skb;
 955        u8 val = 0x00;
 956
 957        BT_DBG("%s", hdev->name);
 958
 959        skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
 960        if (IS_ERR(skb))
 961                BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
 962        else
 963                kfree_skb(skb);
 964
 965        return 0;
 966}
 967
 968static int btusb_setup_csr(struct hci_dev *hdev)
 969{
 970        struct hci_rp_read_local_version *rp;
 971        struct sk_buff *skb;
 972        int ret;
 973
 974        BT_DBG("%s", hdev->name);
 975
 976        skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
 977                             HCI_INIT_TIMEOUT);
 978        if (IS_ERR(skb)) {
 979                BT_ERR("Reading local version failed (%ld)", -PTR_ERR(skb));
 980                return -PTR_ERR(skb);
 981        }
 982
 983        rp = (struct hci_rp_read_local_version *) skb->data;
 984
 985        if (!rp->status) {
 986                if (le16_to_cpu(rp->manufacturer) != 10) {
 987                        /* Clear the reset quirk since this is not an actual
 988                         * early Bluetooth 1.1 device from CSR.
 989                         */
 990                        clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
 991
 992                        /* These fake CSR controllers have all a broken
 993                         * stored link key handling and so just disable it.
 994                         */
 995                        set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY,
 996                                &hdev->quirks);
 997                }
 998        }
 999
1000        ret = -bt_to_errno(rp->status);
1001
1002        kfree_skb(skb);
1003
1004        return ret;
1005}
1006
1007struct intel_version {
1008        u8 status;
1009        u8 hw_platform;
1010        u8 hw_variant;
1011        u8 hw_revision;
1012        u8 fw_variant;
1013        u8 fw_revision;
1014        u8 fw_build_num;
1015        u8 fw_build_ww;
1016        u8 fw_build_yy;
1017        u8 fw_patch_num;
1018} __packed;
1019
1020static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1021                                                struct intel_version *ver)
1022{
1023        const struct firmware *fw;
1024        char fwname[64];
1025        int ret;
1026
1027        snprintf(fwname, sizeof(fwname),
1028                 "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1029                 ver->hw_platform, ver->hw_variant, ver->hw_revision,
1030                 ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1031                 ver->fw_build_ww, ver->fw_build_yy);
1032
1033        ret = request_firmware(&fw, fwname, &hdev->dev);
1034        if (ret < 0) {
1035                if (ret == -EINVAL) {
1036                        BT_ERR("%s Intel firmware file request failed (%d)",
1037                               hdev->name, ret);
1038                        return NULL;
1039                }
1040
1041                BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1042                       hdev->name, fwname, ret);
1043
1044                /* If the correct firmware patch file is not found, use the
1045                 * default firmware patch file instead
1046                 */
1047                snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1048                         ver->hw_platform, ver->hw_variant);
1049                if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1050                        BT_ERR("%s failed to open default Intel fw file: %s",
1051                               hdev->name, fwname);
1052                        return NULL;
1053                }
1054        }
1055
1056        BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1057
1058        return fw;
1059}
1060
1061static int btusb_setup_intel_patching(struct hci_dev *hdev,
1062                                      const struct firmware *fw,
1063                                      const u8 **fw_ptr, int *disable_patch)
1064{
1065        struct sk_buff *skb;
1066        struct hci_command_hdr *cmd;
1067        const u8 *cmd_param;
1068        struct hci_event_hdr *evt = NULL;
1069        const u8 *evt_param = NULL;
1070        int remain = fw->size - (*fw_ptr - fw->data);
1071
1072        /* The first byte indicates the types of the patch command or event.
1073         * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1074         * in the current firmware buffer doesn't start with 0x01 or
1075         * the size of remain buffer is smaller than HCI command header,
1076         * the firmware file is corrupted and it should stop the patching
1077         * process.
1078         */
1079        if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1080                BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1081                return -EINVAL;
1082        }
1083        (*fw_ptr)++;
1084        remain--;
1085
1086        cmd = (struct hci_command_hdr *)(*fw_ptr);
1087        *fw_ptr += sizeof(*cmd);
1088        remain -= sizeof(*cmd);
1089
1090        /* Ensure that the remain firmware data is long enough than the length
1091         * of command parameter. If not, the firmware file is corrupted.
1092         */
1093        if (remain < cmd->plen) {
1094                BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1095                return -EFAULT;
1096        }
1097
1098        /* If there is a command that loads a patch in the firmware
1099         * file, then enable the patch upon success, otherwise just
1100         * disable the manufacturer mode, for example patch activation
1101         * is not required when the default firmware patch file is used
1102         * because there are no patch data to load.
1103         */
1104        if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1105                *disable_patch = 0;
1106
1107        cmd_param = *fw_ptr;
1108        *fw_ptr += cmd->plen;
1109        remain -= cmd->plen;
1110
1111        /* This reads the expected events when the above command is sent to the
1112         * device. Some vendor commands expects more than one events, for
1113         * example command status event followed by vendor specific event.
1114         * For this case, it only keeps the last expected event. so the command
1115         * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1116         * last expected event.
1117         */
1118        while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1119                (*fw_ptr)++;
1120                remain--;
1121
1122                evt = (struct hci_event_hdr *)(*fw_ptr);
1123                *fw_ptr += sizeof(*evt);
1124                remain -= sizeof(*evt);
1125
1126                if (remain < evt->plen) {
1127                        BT_ERR("%s Intel fw corrupted: invalid evt len",
1128                               hdev->name);
1129                        return -EFAULT;
1130                }
1131
1132                evt_param = *fw_ptr;
1133                *fw_ptr += evt->plen;
1134                remain -= evt->plen;
1135        }
1136
1137        /* Every HCI commands in the firmware file has its correspond event.
1138         * If event is not found or remain is smaller than zero, the firmware
1139         * file is corrupted.
1140         */
1141        if (!evt || !evt_param || remain < 0) {
1142                BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1143                return -EFAULT;
1144        }
1145
1146        skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1147                                cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1148        if (IS_ERR(skb)) {
1149                BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1150                       hdev->name, cmd->opcode, PTR_ERR(skb));
1151                return PTR_ERR(skb);
1152        }
1153
1154        /* It ensures that the returned event matches the event data read from
1155         * the firmware file. At fist, it checks the length and then
1156         * the contents of the event.
1157         */
1158        if (skb->len != evt->plen) {
1159                BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1160                       le16_to_cpu(cmd->opcode));
1161                kfree_skb(skb);
1162                return -EFAULT;
1163        }
1164
1165        if (memcmp(skb->data, evt_param, evt->plen)) {
1166                BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1167                       hdev->name, le16_to_cpu(cmd->opcode));
1168                kfree_skb(skb);
1169                return -EFAULT;
1170        }
1171        kfree_skb(skb);
1172
1173        return 0;
1174}
1175
1176static int btusb_setup_intel(struct hci_dev *hdev)
1177{
1178        struct sk_buff *skb;
1179        const struct firmware *fw;
1180        const u8 *fw_ptr;
1181        int disable_patch;
1182        struct intel_version *ver;
1183
1184        const u8 mfg_enable[] = { 0x01, 0x00 };
1185        const u8 mfg_disable[] = { 0x00, 0x00 };
1186        const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
1187        const u8 mfg_reset_activate[] = { 0x00, 0x02 };
1188
1189        BT_DBG("%s", hdev->name);
1190
1191        /* The controller has a bug with the first HCI command sent to it
1192         * returning number of completed commands as zero. This would stall the
1193         * command processing in the Bluetooth core.
1194         *
1195         * As a workaround, send HCI Reset command first which will reset the
1196         * number of completed commands and allow normal command processing
1197         * from now on.
1198         */
1199        skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1200        if (IS_ERR(skb)) {
1201                BT_ERR("%s sending initial HCI reset command failed (%ld)",
1202                       hdev->name, PTR_ERR(skb));
1203                return PTR_ERR(skb);
1204        }
1205        kfree_skb(skb);
1206
1207        /* Read Intel specific controller version first to allow selection of
1208         * which firmware file to load.
1209         *
1210         * The returned information are hardware variant and revision plus
1211         * firmware variant, revision and build number.
1212         */
1213        skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1214        if (IS_ERR(skb)) {
1215                BT_ERR("%s reading Intel fw version command failed (%ld)",
1216                       hdev->name, PTR_ERR(skb));
1217                return PTR_ERR(skb);
1218        }
1219
1220        if (skb->len != sizeof(*ver)) {
1221                BT_ERR("%s Intel version event length mismatch", hdev->name);
1222                kfree_skb(skb);
1223                return -EIO;
1224        }
1225
1226        ver = (struct intel_version *)skb->data;
1227        if (ver->status) {
1228                BT_ERR("%s Intel fw version event failed (%02x)", hdev->name,
1229                       ver->status);
1230                kfree_skb(skb);
1231                return -bt_to_errno(ver->status);
1232        }
1233
1234        BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1235                hdev->name, ver->hw_platform, ver->hw_variant,
1236                ver->hw_revision, ver->fw_variant,  ver->fw_revision,
1237                ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
1238                ver->fw_patch_num);
1239
1240        /* fw_patch_num indicates the version of patch the device currently
1241         * have. If there is no patch data in the device, it is always 0x00.
1242         * So, if it is other than 0x00, no need to patch the deivce again.
1243         */
1244        if (ver->fw_patch_num) {
1245                BT_INFO("%s: Intel device is already patched. patch num: %02x",
1246                        hdev->name, ver->fw_patch_num);
1247                kfree_skb(skb);
1248                return 0;
1249        }
1250
1251        /* Opens the firmware patch file based on the firmware version read
1252         * from the controller. If it fails to open the matching firmware
1253         * patch file, it tries to open the default firmware patch file.
1254         * If no patch file is found, allow the device to operate without
1255         * a patch.
1256         */
1257        fw = btusb_setup_intel_get_fw(hdev, ver);
1258        if (!fw) {
1259                kfree_skb(skb);
1260                return 0;
1261        }
1262        fw_ptr = fw->data;
1263
1264        /* This Intel specific command enables the manufacturer mode of the
1265         * controller.
1266         *
1267         * Only while this mode is enabled, the driver can download the
1268         * firmware patch data and configuration parameters.
1269         */
1270        skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
1271        if (IS_ERR(skb)) {
1272                BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
1273                       hdev->name, PTR_ERR(skb));
1274                release_firmware(fw);
1275                return PTR_ERR(skb);
1276        }
1277
1278        if (skb->data[0]) {
1279                u8 evt_status = skb->data[0];
1280                BT_ERR("%s enable Intel manufacturer mode event failed (%02x)",
1281                       hdev->name, evt_status);
1282                kfree_skb(skb);
1283                release_firmware(fw);
1284                return -bt_to_errno(evt_status);
1285        }
1286        kfree_skb(skb);
1287
1288        disable_patch = 1;
1289
1290        /* The firmware data file consists of list of Intel specific HCI
1291         * commands and its expected events. The first byte indicates the
1292         * type of the message, either HCI command or HCI event.
1293         *
1294         * It reads the command and its expected event from the firmware file,
1295         * and send to the controller. Once __hci_cmd_sync_ev() returns,
1296         * the returned event is compared with the event read from the firmware
1297         * file and it will continue until all the messages are downloaded to
1298         * the controller.
1299         *
1300         * Once the firmware patching is completed successfully,
1301         * the manufacturer mode is disabled with reset and activating the
1302         * downloaded patch.
1303         *
1304         * If the firmware patching fails, the manufacturer mode is
1305         * disabled with reset and deactivating the patch.
1306         *
1307         * If the default patch file is used, no reset is done when disabling
1308         * the manufacturer.
1309         */
1310        while (fw->size > fw_ptr - fw->data) {
1311                int ret;
1312
1313                ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1314                                                 &disable_patch);
1315                if (ret < 0)
1316                        goto exit_mfg_deactivate;
1317        }
1318
1319        release_firmware(fw);
1320
1321        if (disable_patch)
1322                goto exit_mfg_disable;
1323
1324        /* Patching completed successfully and disable the manufacturer mode
1325         * with reset and activate the downloaded firmware patches.
1326         */
1327        skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
1328                             mfg_reset_activate, HCI_INIT_TIMEOUT);
1329        if (IS_ERR(skb)) {
1330                BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1331                       hdev->name, PTR_ERR(skb));
1332                return PTR_ERR(skb);
1333        }
1334        kfree_skb(skb);
1335
1336        BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1337                hdev->name);
1338
1339        return 0;
1340
1341exit_mfg_disable:
1342        /* Disable the manufacturer mode without reset */
1343        skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
1344                             HCI_INIT_TIMEOUT);
1345        if (IS_ERR(skb)) {
1346                BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1347                       hdev->name, PTR_ERR(skb));
1348                return PTR_ERR(skb);
1349        }
1350        kfree_skb(skb);
1351
1352        BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1353        return 0;
1354
1355exit_mfg_deactivate:
1356        release_firmware(fw);
1357
1358        /* Patching failed. Disable the manufacturer mode with reset and
1359         * deactivate the downloaded firmware patches.
1360         */
1361        skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
1362                             mfg_reset_deactivate, HCI_INIT_TIMEOUT);
1363        if (IS_ERR(skb)) {
1364                BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1365                       hdev->name, PTR_ERR(skb));
1366                return PTR_ERR(skb);
1367        }
1368        kfree_skb(skb);
1369
1370        BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1371                hdev->name);
1372
1373        return 0;
1374}
1375
1376static int btusb_probe(struct usb_interface *intf,
1377                                const struct usb_device_id *id)
1378{
1379        struct usb_endpoint_descriptor *ep_desc;
1380        struct btusb_data *data;
1381        struct hci_dev *hdev;
1382        int i, err;
1383
1384        BT_DBG("intf %p id %p", intf, id);
1385
1386        /* interface numbers are hardcoded in the spec */
1387        if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
1388                return -ENODEV;
1389
1390        if (!id->driver_info) {
1391                const struct usb_device_id *match;
1392                match = usb_match_id(intf, blacklist_table);
1393                if (match)
1394                        id = match;
1395        }
1396
1397        if (id->driver_info == BTUSB_IGNORE)
1398                return -ENODEV;
1399
1400        if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
1401                return -ENODEV;
1402
1403        if (ignore_csr && id->driver_info & BTUSB_CSR)
1404                return -ENODEV;
1405
1406        if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
1407                return -ENODEV;
1408
1409        if (id->driver_info & BTUSB_ATH3012) {
1410                struct usb_device *udev = interface_to_usbdev(intf);
1411
1412                /* Old firmware would otherwise let ath3k driver load
1413                 * patch and sysconfig files */
1414                if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
1415                        return -ENODEV;
1416        }
1417
1418        data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
1419        if (!data)
1420                return -ENOMEM;
1421
1422        for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1423                ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1424
1425                if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
1426                        data->intr_ep = ep_desc;
1427                        continue;
1428                }
1429
1430                if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
1431                        data->bulk_tx_ep = ep_desc;
1432                        continue;
1433                }
1434
1435                if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
1436                        data->bulk_rx_ep = ep_desc;
1437                        continue;
1438                }
1439        }
1440
1441        if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
1442                return -ENODEV;
1443
1444        data->cmdreq_type = USB_TYPE_CLASS;
1445
1446        data->udev = interface_to_usbdev(intf);
1447        data->intf = intf;
1448
1449        spin_lock_init(&data->lock);
1450
1451        INIT_WORK(&data->work, btusb_work);
1452        INIT_WORK(&data->waker, btusb_waker);
1453        spin_lock_init(&data->txlock);
1454
1455        init_usb_anchor(&data->tx_anchor);
1456        init_usb_anchor(&data->intr_anchor);
1457        init_usb_anchor(&data->bulk_anchor);
1458        init_usb_anchor(&data->isoc_anchor);
1459        init_usb_anchor(&data->deferred);
1460
1461        hdev = hci_alloc_dev();
1462        if (!hdev)
1463                return -ENOMEM;
1464
1465        hdev->bus = HCI_USB;
1466        hci_set_drvdata(hdev, data);
1467
1468        data->hdev = hdev;
1469
1470        SET_HCIDEV_DEV(hdev, &intf->dev);
1471
1472        hdev->open   = btusb_open;
1473        hdev->close  = btusb_close;
1474        hdev->flush  = btusb_flush;
1475        hdev->send   = btusb_send_frame;
1476        hdev->notify = btusb_notify;
1477
1478        if (id->driver_info & BTUSB_BCM92035)
1479                hdev->setup = btusb_setup_bcm92035;
1480
1481        if (id->driver_info & BTUSB_INTEL) {
1482                usb_enable_autosuspend(data->udev);
1483                hdev->setup = btusb_setup_intel;
1484        }
1485
1486        /* Interface numbers are hardcoded in the specification */
1487        data->isoc = usb_ifnum_to_if(data->udev, 1);
1488
1489        if (!reset)
1490                set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1491
1492        if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1493                if (!disable_scofix)
1494                        set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1495        }
1496
1497        if (id->driver_info & BTUSB_BROKEN_ISOC)
1498                data->isoc = NULL;
1499
1500        if (id->driver_info & BTUSB_DIGIANSWER) {
1501                data->cmdreq_type = USB_TYPE_VENDOR;
1502                set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1503        }
1504
1505        if (id->driver_info & BTUSB_CSR) {
1506                struct usb_device *udev = data->udev;
1507                u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
1508
1509                /* Old firmware would otherwise execute USB reset */
1510                if (bcdDevice < 0x117)
1511                        set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1512
1513                /* Fake CSR devices with broken commands */
1514                if (bcdDevice <= 0x100)
1515                        hdev->setup = btusb_setup_csr;
1516        }
1517
1518        if (id->driver_info & BTUSB_SNIFFER) {
1519                struct usb_device *udev = data->udev;
1520
1521                /* New sniffer firmware has crippled HCI interface */
1522                if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1523                        set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1524
1525                data->isoc = NULL;
1526        }
1527
1528        if (data->isoc) {
1529                err = usb_driver_claim_interface(&btusb_driver,
1530                                                        data->isoc, data);
1531                if (err < 0) {
1532                        hci_free_dev(hdev);
1533                        return err;
1534                }
1535        }
1536
1537        err = hci_register_dev(hdev);
1538        if (err < 0) {
1539                hci_free_dev(hdev);
1540                return err;
1541        }
1542
1543        usb_set_intfdata(intf, data);
1544
1545        return 0;
1546}
1547
1548static void btusb_disconnect(struct usb_interface *intf)
1549{
1550        struct btusb_data *data = usb_get_intfdata(intf);
1551        struct hci_dev *hdev;
1552
1553        BT_DBG("intf %p", intf);
1554
1555        if (!data)
1556                return;
1557
1558        hdev = data->hdev;
1559        usb_set_intfdata(data->intf, NULL);
1560
1561        if (data->isoc)
1562                usb_set_intfdata(data->isoc, NULL);
1563
1564        hci_unregister_dev(hdev);
1565
1566        if (intf == data->isoc)
1567                usb_driver_release_interface(&btusb_driver, data->intf);
1568        else if (data->isoc)
1569                usb_driver_release_interface(&btusb_driver, data->isoc);
1570
1571        hci_free_dev(hdev);
1572}
1573
1574#ifdef CONFIG_PM
1575static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1576{
1577        struct btusb_data *data = usb_get_intfdata(intf);
1578
1579        BT_DBG("intf %p", intf);
1580
1581        if (data->suspend_count++)
1582                return 0;
1583
1584        spin_lock_irq(&data->txlock);
1585        if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1586                set_bit(BTUSB_SUSPENDING, &data->flags);
1587                spin_unlock_irq(&data->txlock);
1588        } else {
1589                spin_unlock_irq(&data->txlock);
1590                data->suspend_count--;
1591                return -EBUSY;
1592        }
1593
1594        cancel_work_sync(&data->work);
1595
1596        btusb_stop_traffic(data);
1597        usb_kill_anchored_urbs(&data->tx_anchor);
1598
1599        return 0;
1600}
1601
1602static void play_deferred(struct btusb_data *data)
1603{
1604        struct urb *urb;
1605        int err;
1606
1607        while ((urb = usb_get_from_anchor(&data->deferred))) {
1608                err = usb_submit_urb(urb, GFP_ATOMIC);
1609                if (err < 0)
1610                        break;
1611
1612                data->tx_in_flight++;
1613        }
1614        usb_scuttle_anchored_urbs(&data->deferred);
1615}
1616
1617static int btusb_resume(struct usb_interface *intf)
1618{
1619        struct btusb_data *data = usb_get_intfdata(intf);
1620        struct hci_dev *hdev = data->hdev;
1621        int err = 0;
1622
1623        BT_DBG("intf %p", intf);
1624
1625        if (--data->suspend_count)
1626                return 0;
1627
1628        if (!test_bit(HCI_RUNNING, &hdev->flags))
1629                goto done;
1630
1631        if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1632                err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1633                if (err < 0) {
1634                        clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1635                        goto failed;
1636                }
1637        }
1638
1639        if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1640                err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1641                if (err < 0) {
1642                        clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1643                        goto failed;
1644                }
1645
1646                btusb_submit_bulk_urb(hdev, GFP_NOIO);
1647        }
1648
1649        if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1650                if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1651                        clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1652                else
1653                        btusb_submit_isoc_urb(hdev, GFP_NOIO);
1654        }
1655
1656        spin_lock_irq(&data->txlock);
1657        play_deferred(data);
1658        clear_bit(BTUSB_SUSPENDING, &data->flags);
1659        spin_unlock_irq(&data->txlock);
1660        schedule_work(&data->work);
1661
1662        return 0;
1663
1664failed:
1665        usb_scuttle_anchored_urbs(&data->deferred);
1666done:
1667        spin_lock_irq(&data->txlock);
1668        clear_bit(BTUSB_SUSPENDING, &data->flags);
1669        spin_unlock_irq(&data->txlock);
1670
1671        return err;
1672}
1673#endif
1674
1675static struct usb_driver btusb_driver = {
1676        .name           = "btusb",
1677        .probe          = btusb_probe,
1678        .disconnect     = btusb_disconnect,
1679#ifdef CONFIG_PM
1680        .suspend        = btusb_suspend,
1681        .resume         = btusb_resume,
1682#endif
1683        .id_table       = btusb_table,
1684        .supports_autosuspend = 1,
1685        .disable_hub_initiated_lpm = 1,
1686};
1687
1688module_usb_driver(btusb_driver);
1689
1690module_param(ignore_dga, bool, 0644);
1691MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1692
1693module_param(ignore_csr, bool, 0644);
1694MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1695
1696module_param(ignore_sniffer, bool, 0644);
1697MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1698
1699module_param(disable_scofix, bool, 0644);
1700MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1701
1702module_param(force_scofix, bool, 0644);
1703MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1704
1705module_param(reset, bool, 0644);
1706MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1707
1708MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1709MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1710MODULE_VERSION(VERSION);
1711MODULE_LICENSE("GPL");
1712
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