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
  27#include <net/bluetooth/bluetooth.h>
  28#include <net/bluetooth/hci_core.h>
  29
  30#define VERSION "0.6"
  31
  32static bool ignore_dga;
  33static bool ignore_csr;
  34static bool ignore_sniffer;
  35static bool disable_scofix;
  36static bool force_scofix;
  37
  38static bool reset = 1;
  39
  40static struct usb_driver btusb_driver;
  41
  42#define BTUSB_IGNORE            0x01
  43#define BTUSB_DIGIANSWER        0x02
  44#define BTUSB_CSR               0x04
  45#define BTUSB_SNIFFER           0x08
  46#define BTUSB_BCM92035          0x10
  47#define BTUSB_BROKEN_ISOC       0x20
  48#define BTUSB_WRONG_SCO_MTU     0x40
  49#define BTUSB_ATH3012           0x80
  50
  51static struct usb_device_id btusb_table[] = {
  52        /* Generic Bluetooth USB device */
  53        { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  54
  55        /* Apple-specific (Broadcom) devices */
  56        { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01) },
  57
  58        /* Broadcom SoftSailing reporting vendor specific */
  59        { USB_DEVICE(0x0a5c, 0x21e1) },
  60
  61        /* Apple MacBookPro 7,1 */
  62        { USB_DEVICE(0x05ac, 0x8213) },
  63
  64        /* Apple iMac11,1 */
  65        { USB_DEVICE(0x05ac, 0x8215) },
  66
  67        /* Apple MacBookPro6,2 */
  68        { USB_DEVICE(0x05ac, 0x8218) },
  69
  70        /* Apple MacBookAir3,1, MacBookAir3,2 */
  71        { USB_DEVICE(0x05ac, 0x821b) },
  72
  73        /* Apple MacBookAir4,1 */
  74        { USB_DEVICE(0x05ac, 0x821f) },
  75
  76        /* Apple MacBookPro8,2 */
  77        { USB_DEVICE(0x05ac, 0x821a) },
  78
  79        /* Apple MacMini5,1 */
  80        { USB_DEVICE(0x05ac, 0x8281) },
  81
  82        /* AVM BlueFRITZ! USB v2.0 */
  83        { USB_DEVICE(0x057c, 0x3800) },
  84
  85        /* Bluetooth Ultraport Module from IBM */
  86        { USB_DEVICE(0x04bf, 0x030a) },
  87
  88        /* ALPS Modules with non-standard id */
  89        { USB_DEVICE(0x044e, 0x3001) },
  90        { USB_DEVICE(0x044e, 0x3002) },
  91
  92        /* Ericsson with non-standard id */
  93        { USB_DEVICE(0x0bdb, 0x1002) },
  94
  95        /* Canyon CN-BTU1 with HID interfaces */
  96        { USB_DEVICE(0x0c10, 0x0000) },
  97
  98        /* Broadcom BCM20702A0 */
  99        { USB_DEVICE(0x0489, 0xe042) },
 100        { USB_DEVICE(0x413c, 0x8197) },
 101
 102        /* Foxconn - Hon Hai */
 103        { USB_DEVICE(0x0489, 0xe033) },
 104
 105        /*Broadcom devices with vendor specific id */
 106        { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01) },
 107
 108        { }     /* Terminating entry */
 109};
 110
 111MODULE_DEVICE_TABLE(usb, btusb_table);
 112
 113static struct usb_device_id blacklist_table[] = {
 114        /* CSR BlueCore devices */
 115        { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 116
 117        /* Broadcom BCM2033 without firmware */
 118        { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 119
 120        /* Atheros 3011 with sflash firmware */
 121        { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 122        { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 123        { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 124        { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 125        { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 126
 127        /* Atheros AR9285 Malbec with sflash firmware */
 128        { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 129
 130        /* Atheros 3012 with sflash firmware */
 131        { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 132        { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 133        { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 134        { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 135        { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 136        { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 137        { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 138        { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 139
 140        /* Atheros AR5BBU12 with sflash firmware */
 141        { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 142
 143        /* Atheros AR5BBU12 with sflash firmware */
 144        { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 145        { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 146
 147        /* Broadcom BCM2035 */
 148        { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 149        { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 150        { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 151
 152        /* Broadcom BCM2045 */
 153        { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 154        { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 155
 156        /* IBM/Lenovo ThinkPad with Broadcom chip */
 157        { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 158        { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 159
 160        /* HP laptop with Broadcom chip */
 161        { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 162
 163        /* Dell laptop with Broadcom chip */
 164        { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 165
 166        /* Dell Wireless 370 and 410 devices */
 167        { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 168        { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 169
 170        /* Belkin F8T012 and F8T013 devices */
 171        { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 172        { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 173
 174        /* Asus WL-BTD202 device */
 175        { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 176
 177        /* Kensington Bluetooth USB adapter */
 178        { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 179
 180        /* RTX Telecom based adapters with buggy SCO support */
 181        { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 182        { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 183
 184        /* CONWISE Technology based adapters with buggy SCO support */
 185        { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 186
 187        /* Digianswer devices */
 188        { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 189        { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 190
 191        /* CSR BlueCore Bluetooth Sniffer */
 192        { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
 193
 194        /* Frontline ComProbe Bluetooth Sniffer */
 195        { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
 196
 197        { }     /* Terminating entry */
 198};
 199
 200#define BTUSB_MAX_ISOC_FRAMES   10
 201
 202#define BTUSB_INTR_RUNNING      0
 203#define BTUSB_BULK_RUNNING      1
 204#define BTUSB_ISOC_RUNNING      2
 205#define BTUSB_SUSPENDING        3
 206#define BTUSB_DID_ISO_RESUME    4
 207
 208struct btusb_data {
 209        struct hci_dev       *hdev;
 210        struct usb_device    *udev;
 211        struct usb_interface *intf;
 212        struct usb_interface *isoc;
 213
 214        spinlock_t lock;
 215
 216        unsigned long flags;
 217
 218        struct work_struct work;
 219        struct work_struct waker;
 220
 221        struct usb_anchor tx_anchor;
 222        struct usb_anchor intr_anchor;
 223        struct usb_anchor bulk_anchor;
 224        struct usb_anchor isoc_anchor;
 225        struct usb_anchor deferred;
 226        int tx_in_flight;
 227        spinlock_t txlock;
 228
 229        struct usb_endpoint_descriptor *intr_ep;
 230        struct usb_endpoint_descriptor *bulk_tx_ep;
 231        struct usb_endpoint_descriptor *bulk_rx_ep;
 232        struct usb_endpoint_descriptor *isoc_tx_ep;
 233        struct usb_endpoint_descriptor *isoc_rx_ep;
 234
 235        __u8 cmdreq_type;
 236
 237        unsigned int sco_num;
 238        int isoc_altsetting;
 239        int suspend_count;
 240};
 241
 242static int inc_tx(struct btusb_data *data)
 243{
 244        unsigned long flags;
 245        int rv;
 246
 247        spin_lock_irqsave(&data->txlock, flags);
 248        rv = test_bit(BTUSB_SUSPENDING, &data->flags);
 249        if (!rv)
 250                data->tx_in_flight++;
 251        spin_unlock_irqrestore(&data->txlock, flags);
 252
 253        return rv;
 254}
 255
 256static void btusb_intr_complete(struct urb *urb)
 257{
 258        struct hci_dev *hdev = urb->context;
 259        struct btusb_data *data = hci_get_drvdata(hdev);
 260        int err;
 261
 262        BT_DBG("%s urb %p status %d count %d", hdev->name,
 263                                        urb, urb->status, urb->actual_length);
 264
 265        if (!test_bit(HCI_RUNNING, &hdev->flags))
 266                return;
 267
 268        if (urb->status == 0) {
 269                hdev->stat.byte_rx += urb->actual_length;
 270
 271                if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
 272                                                urb->transfer_buffer,
 273                                                urb->actual_length) < 0) {
 274                        BT_ERR("%s corrupted event packet", hdev->name);
 275                        hdev->stat.err_rx++;
 276                }
 277        }
 278
 279        if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 280                return;
 281
 282        usb_mark_last_busy(data->udev);
 283        usb_anchor_urb(urb, &data->intr_anchor);
 284
 285        err = usb_submit_urb(urb, GFP_ATOMIC);
 286        if (err < 0) {
 287                /* -EPERM: urb is being killed;
 288                 * -ENODEV: device got disconnected */
 289                if (err != -EPERM && err != -ENODEV)
 290                        BT_ERR("%s urb %p failed to resubmit (%d)",
 291                                                hdev->name, urb, -err);
 292                usb_unanchor_urb(urb);
 293        }
 294}
 295
 296static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 297{
 298        struct btusb_data *data = hci_get_drvdata(hdev);
 299        struct urb *urb;
 300        unsigned char *buf;
 301        unsigned int pipe;
 302        int err, size;
 303
 304        BT_DBG("%s", hdev->name);
 305
 306        if (!data->intr_ep)
 307                return -ENODEV;
 308
 309        urb = usb_alloc_urb(0, mem_flags);
 310        if (!urb)
 311                return -ENOMEM;
 312
 313        size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 314
 315        buf = kmalloc(size, mem_flags);
 316        if (!buf) {
 317                usb_free_urb(urb);
 318                return -ENOMEM;
 319        }
 320
 321        pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 322
 323        usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 324                                                btusb_intr_complete, hdev,
 325                                                data->intr_ep->bInterval);
 326
 327        urb->transfer_flags |= URB_FREE_BUFFER;
 328
 329        usb_anchor_urb(urb, &data->intr_anchor);
 330
 331        err = usb_submit_urb(urb, mem_flags);
 332        if (err < 0) {
 333                if (err != -EPERM && err != -ENODEV)
 334                        BT_ERR("%s urb %p submission failed (%d)",
 335                                                hdev->name, urb, -err);
 336                usb_unanchor_urb(urb);
 337        }
 338
 339        usb_free_urb(urb);
 340
 341        return err;
 342}
 343
 344static void btusb_bulk_complete(struct urb *urb)
 345{
 346        struct hci_dev *hdev = urb->context;
 347        struct btusb_data *data = hci_get_drvdata(hdev);
 348        int err;
 349
 350        BT_DBG("%s urb %p status %d count %d", hdev->name,
 351                                        urb, urb->status, urb->actual_length);
 352
 353        if (!test_bit(HCI_RUNNING, &hdev->flags))
 354                return;
 355
 356        if (urb->status == 0) {
 357                hdev->stat.byte_rx += urb->actual_length;
 358
 359                if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
 360                                                urb->transfer_buffer,
 361                                                urb->actual_length) < 0) {
 362                        BT_ERR("%s corrupted ACL packet", hdev->name);
 363                        hdev->stat.err_rx++;
 364                }
 365        }
 366
 367        if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 368                return;
 369
 370        usb_anchor_urb(urb, &data->bulk_anchor);
 371        usb_mark_last_busy(data->udev);
 372
 373        err = usb_submit_urb(urb, GFP_ATOMIC);
 374        if (err < 0) {
 375                /* -EPERM: urb is being killed;
 376                 * -ENODEV: device got disconnected */
 377                if (err != -EPERM && err != -ENODEV)
 378                        BT_ERR("%s urb %p failed to resubmit (%d)",
 379                                                hdev->name, urb, -err);
 380                usb_unanchor_urb(urb);
 381        }
 382}
 383
 384static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 385{
 386        struct btusb_data *data = hci_get_drvdata(hdev);
 387        struct urb *urb;
 388        unsigned char *buf;
 389        unsigned int pipe;
 390        int err, size = HCI_MAX_FRAME_SIZE;
 391
 392        BT_DBG("%s", hdev->name);
 393
 394        if (!data->bulk_rx_ep)
 395                return -ENODEV;
 396
 397        urb = usb_alloc_urb(0, mem_flags);
 398        if (!urb)
 399                return -ENOMEM;
 400
 401        buf = kmalloc(size, mem_flags);
 402        if (!buf) {
 403                usb_free_urb(urb);
 404                return -ENOMEM;
 405        }
 406
 407        pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 408
 409        usb_fill_bulk_urb(urb, data->udev, pipe,
 410                                        buf, size, btusb_bulk_complete, hdev);
 411
 412        urb->transfer_flags |= URB_FREE_BUFFER;
 413
 414        usb_mark_last_busy(data->udev);
 415        usb_anchor_urb(urb, &data->bulk_anchor);
 416
 417        err = usb_submit_urb(urb, mem_flags);
 418        if (err < 0) {
 419                if (err != -EPERM && err != -ENODEV)
 420                        BT_ERR("%s urb %p submission failed (%d)",
 421                                                hdev->name, urb, -err);
 422                usb_unanchor_urb(urb);
 423        }
 424
 425        usb_free_urb(urb);
 426
 427        return err;
 428}
 429
 430static void btusb_isoc_complete(struct urb *urb)
 431{
 432        struct hci_dev *hdev = urb->context;
 433        struct btusb_data *data = hci_get_drvdata(hdev);
 434        int i, err;
 435
 436        BT_DBG("%s urb %p status %d count %d", hdev->name,
 437                                        urb, urb->status, urb->actual_length);
 438
 439        if (!test_bit(HCI_RUNNING, &hdev->flags))
 440                return;
 441
 442        if (urb->status == 0) {
 443                for (i = 0; i < urb->number_of_packets; i++) {
 444                        unsigned int offset = urb->iso_frame_desc[i].offset;
 445                        unsigned int length = urb->iso_frame_desc[i].actual_length;
 446
 447                        if (urb->iso_frame_desc[i].status)
 448                                continue;
 449
 450                        hdev->stat.byte_rx += length;
 451
 452                        if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
 453                                                urb->transfer_buffer + offset,
 454                                                                length) < 0) {
 455                                BT_ERR("%s corrupted SCO packet", hdev->name);
 456                                hdev->stat.err_rx++;
 457                        }
 458                }
 459        }
 460
 461        if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 462                return;
 463
 464        usb_anchor_urb(urb, &data->isoc_anchor);
 465
 466        err = usb_submit_urb(urb, GFP_ATOMIC);
 467        if (err < 0) {
 468                /* -EPERM: urb is being killed;
 469                 * -ENODEV: device got disconnected */
 470                if (err != -EPERM && err != -ENODEV)
 471                        BT_ERR("%s urb %p failed to resubmit (%d)",
 472                                                hdev->name, urb, -err);
 473                usb_unanchor_urb(urb);
 474        }
 475}
 476
 477static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 478{
 479        int i, offset = 0;
 480
 481        BT_DBG("len %d mtu %d", len, mtu);
 482
 483        for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 484                                        i++, offset += mtu, len -= mtu) {
 485                urb->iso_frame_desc[i].offset = offset;
 486                urb->iso_frame_desc[i].length = mtu;
 487        }
 488
 489        if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 490                urb->iso_frame_desc[i].offset = offset;
 491                urb->iso_frame_desc[i].length = len;
 492                i++;
 493        }
 494
 495        urb->number_of_packets = i;
 496}
 497
 498static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 499{
 500        struct btusb_data *data = hci_get_drvdata(hdev);
 501        struct urb *urb;
 502        unsigned char *buf;
 503        unsigned int pipe;
 504        int err, size;
 505
 506        BT_DBG("%s", hdev->name);
 507
 508        if (!data->isoc_rx_ep)
 509                return -ENODEV;
 510
 511        urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 512        if (!urb)
 513                return -ENOMEM;
 514
 515        size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 516                                                BTUSB_MAX_ISOC_FRAMES;
 517
 518        buf = kmalloc(size, mem_flags);
 519        if (!buf) {
 520                usb_free_urb(urb);
 521                return -ENOMEM;
 522        }
 523
 524        pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 525
 526        usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 527                                hdev, data->isoc_rx_ep->bInterval);
 528
 529        urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
 530
 531        __fill_isoc_descriptor(urb, size,
 532                        le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 533
 534        usb_anchor_urb(urb, &data->isoc_anchor);
 535
 536        err = usb_submit_urb(urb, mem_flags);
 537        if (err < 0) {
 538                if (err != -EPERM && err != -ENODEV)
 539                        BT_ERR("%s urb %p submission failed (%d)",
 540                                                hdev->name, urb, -err);
 541                usb_unanchor_urb(urb);
 542        }
 543
 544        usb_free_urb(urb);
 545
 546        return err;
 547}
 548
 549static void btusb_tx_complete(struct urb *urb)
 550{
 551        struct sk_buff *skb = urb->context;
 552        struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 553        struct btusb_data *data = hci_get_drvdata(hdev);
 554
 555        BT_DBG("%s urb %p status %d count %d", hdev->name,
 556                                        urb, urb->status, urb->actual_length);
 557
 558        if (!test_bit(HCI_RUNNING, &hdev->flags))
 559                goto done;
 560
 561        if (!urb->status)
 562                hdev->stat.byte_tx += urb->transfer_buffer_length;
 563        else
 564                hdev->stat.err_tx++;
 565
 566done:
 567        spin_lock(&data->txlock);
 568        data->tx_in_flight--;
 569        spin_unlock(&data->txlock);
 570
 571        kfree(urb->setup_packet);
 572
 573        kfree_skb(skb);
 574}
 575
 576static void btusb_isoc_tx_complete(struct urb *urb)
 577{
 578        struct sk_buff *skb = urb->context;
 579        struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 580
 581        BT_DBG("%s urb %p status %d count %d", hdev->name,
 582                                        urb, urb->status, urb->actual_length);
 583
 584        if (!test_bit(HCI_RUNNING, &hdev->flags))
 585                goto done;
 586
 587        if (!urb->status)
 588                hdev->stat.byte_tx += urb->transfer_buffer_length;
 589        else
 590                hdev->stat.err_tx++;
 591
 592done:
 593        kfree(urb->setup_packet);
 594
 595        kfree_skb(skb);
 596}
 597
 598static int btusb_open(struct hci_dev *hdev)
 599{
 600        struct btusb_data *data = hci_get_drvdata(hdev);
 601        int err;
 602
 603        BT_DBG("%s", hdev->name);
 604
 605        err = usb_autopm_get_interface(data->intf);
 606        if (err < 0)
 607                return err;
 608
 609        data->intf->needs_remote_wakeup = 1;
 610
 611        if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 612                goto done;
 613
 614        if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 615                goto done;
 616
 617        err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 618        if (err < 0)
 619                goto failed;
 620
 621        err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 622        if (err < 0) {
 623                usb_kill_anchored_urbs(&data->intr_anchor);
 624                goto failed;
 625        }
 626
 627        set_bit(BTUSB_BULK_RUNNING, &data->flags);
 628        btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 629
 630done:
 631        usb_autopm_put_interface(data->intf);
 632        return 0;
 633
 634failed:
 635        clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 636        clear_bit(HCI_RUNNING, &hdev->flags);
 637        usb_autopm_put_interface(data->intf);
 638        return err;
 639}
 640
 641static void btusb_stop_traffic(struct btusb_data *data)
 642{
 643        usb_kill_anchored_urbs(&data->intr_anchor);
 644        usb_kill_anchored_urbs(&data->bulk_anchor);
 645        usb_kill_anchored_urbs(&data->isoc_anchor);
 646}
 647
 648static int btusb_close(struct hci_dev *hdev)
 649{
 650        struct btusb_data *data = hci_get_drvdata(hdev);
 651        int err;
 652
 653        BT_DBG("%s", hdev->name);
 654
 655        if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 656                return 0;
 657
 658        cancel_work_sync(&data->work);
 659        cancel_work_sync(&data->waker);
 660
 661        clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 662        clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 663        clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 664
 665        btusb_stop_traffic(data);
 666        err = usb_autopm_get_interface(data->intf);
 667        if (err < 0)
 668                goto failed;
 669
 670        data->intf->needs_remote_wakeup = 0;
 671        usb_autopm_put_interface(data->intf);
 672
 673failed:
 674        usb_scuttle_anchored_urbs(&data->deferred);
 675        return 0;
 676}
 677
 678static int btusb_flush(struct hci_dev *hdev)
 679{
 680        struct btusb_data *data = hci_get_drvdata(hdev);
 681
 682        BT_DBG("%s", hdev->name);
 683
 684        usb_kill_anchored_urbs(&data->tx_anchor);
 685
 686        return 0;
 687}
 688
 689static int btusb_send_frame(struct sk_buff *skb)
 690{
 691        struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 692        struct btusb_data *data = hci_get_drvdata(hdev);
 693        struct usb_ctrlrequest *dr;
 694        struct urb *urb;
 695        unsigned int pipe;
 696        int err;
 697
 698        BT_DBG("%s", hdev->name);
 699
 700        if (!test_bit(HCI_RUNNING, &hdev->flags))
 701                return -EBUSY;
 702
 703        switch (bt_cb(skb)->pkt_type) {
 704        case HCI_COMMAND_PKT:
 705                urb = usb_alloc_urb(0, GFP_ATOMIC);
 706                if (!urb)
 707                        return -ENOMEM;
 708
 709                dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
 710                if (!dr) {
 711                        usb_free_urb(urb);
 712                        return -ENOMEM;
 713                }
 714
 715                dr->bRequestType = data->cmdreq_type;
 716                dr->bRequest     = 0;
 717                dr->wIndex       = 0;
 718                dr->wValue       = 0;
 719                dr->wLength      = __cpu_to_le16(skb->len);
 720
 721                pipe = usb_sndctrlpipe(data->udev, 0x00);
 722
 723                usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
 724                                skb->data, skb->len, btusb_tx_complete, skb);
 725
 726                hdev->stat.cmd_tx++;
 727                break;
 728
 729        case HCI_ACLDATA_PKT:
 730                if (!data->bulk_tx_ep)
 731                        return -ENODEV;
 732
 733                urb = usb_alloc_urb(0, GFP_ATOMIC);
 734                if (!urb)
 735                        return -ENOMEM;
 736
 737                pipe = usb_sndbulkpipe(data->udev,
 738                                        data->bulk_tx_ep->bEndpointAddress);
 739
 740                usb_fill_bulk_urb(urb, data->udev, pipe,
 741                                skb->data, skb->len, btusb_tx_complete, skb);
 742
 743                hdev->stat.acl_tx++;
 744                break;
 745
 746        case HCI_SCODATA_PKT:
 747                if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
 748                        return -ENODEV;
 749
 750                urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
 751                if (!urb)
 752                        return -ENOMEM;
 753
 754                pipe = usb_sndisocpipe(data->udev,
 755                                        data->isoc_tx_ep->bEndpointAddress);
 756
 757                usb_fill_int_urb(urb, data->udev, pipe,
 758                                skb->data, skb->len, btusb_isoc_tx_complete,
 759                                skb, data->isoc_tx_ep->bInterval);
 760
 761                urb->transfer_flags  = URB_ISO_ASAP;
 762
 763                __fill_isoc_descriptor(urb, skb->len,
 764                                le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 765
 766                hdev->stat.sco_tx++;
 767                goto skip_waking;
 768
 769        default:
 770                return -EILSEQ;
 771        }
 772
 773        err = inc_tx(data);
 774        if (err) {
 775                usb_anchor_urb(urb, &data->deferred);
 776                schedule_work(&data->waker);
 777                err = 0;
 778                goto done;
 779        }
 780
 781skip_waking:
 782        usb_anchor_urb(urb, &data->tx_anchor);
 783
 784        err = usb_submit_urb(urb, GFP_ATOMIC);
 785        if (err < 0) {
 786                if (err != -EPERM && err != -ENODEV)
 787                        BT_ERR("%s urb %p submission failed (%d)",
 788                                                hdev->name, urb, -err);
 789                kfree(urb->setup_packet);
 790                usb_unanchor_urb(urb);
 791        } else {
 792                usb_mark_last_busy(data->udev);
 793        }
 794
 795done:
 796        usb_free_urb(urb);
 797        return err;
 798}
 799
 800static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 801{
 802        struct btusb_data *data = hci_get_drvdata(hdev);
 803
 804        BT_DBG("%s evt %d", hdev->name, evt);
 805
 806        if (hdev->conn_hash.sco_num != data->sco_num) {
 807                data->sco_num = hdev->conn_hash.sco_num;
 808                schedule_work(&data->work);
 809        }
 810}
 811
 812static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
 813{
 814        struct btusb_data *data = hci_get_drvdata(hdev);
 815        struct usb_interface *intf = data->isoc;
 816        struct usb_endpoint_descriptor *ep_desc;
 817        int i, err;
 818
 819        if (!data->isoc)
 820                return -ENODEV;
 821
 822        err = usb_set_interface(data->udev, 1, altsetting);
 823        if (err < 0) {
 824                BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
 825                return err;
 826        }
 827
 828        data->isoc_altsetting = altsetting;
 829
 830        data->isoc_tx_ep = NULL;
 831        data->isoc_rx_ep = NULL;
 832
 833        for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 834                ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 835
 836                if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
 837                        data->isoc_tx_ep = ep_desc;
 838                        continue;
 839                }
 840
 841                if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
 842                        data->isoc_rx_ep = ep_desc;
 843                        continue;
 844                }
 845        }
 846
 847        if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
 848                BT_ERR("%s invalid SCO descriptors", hdev->name);
 849                return -ENODEV;
 850        }
 851
 852        return 0;
 853}
 854
 855static void btusb_work(struct work_struct *work)
 856{
 857        struct btusb_data *data = container_of(work, struct btusb_data, work);
 858        struct hci_dev *hdev = data->hdev;
 859        int new_alts;
 860        int err;
 861
 862        if (hdev->conn_hash.sco_num > 0) {
 863                if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
 864                        err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
 865                        if (err < 0) {
 866                                clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 867                                usb_kill_anchored_urbs(&data->isoc_anchor);
 868                                return;
 869                        }
 870
 871                        set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
 872                }
 873
 874                if (hdev->voice_setting & 0x0020) {
 875                        static const int alts[3] = { 2, 4, 5 };
 876                        new_alts = alts[hdev->conn_hash.sco_num - 1];
 877                } else {
 878                        new_alts = hdev->conn_hash.sco_num;
 879                }
 880
 881                if (data->isoc_altsetting != new_alts) {
 882                        clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 883                        usb_kill_anchored_urbs(&data->isoc_anchor);
 884
 885                        if (__set_isoc_interface(hdev, new_alts) < 0)
 886                                return;
 887                }
 888
 889                if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
 890                        if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
 891                                clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 892                        else
 893                                btusb_submit_isoc_urb(hdev, GFP_KERNEL);
 894                }
 895        } else {
 896                clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 897                usb_kill_anchored_urbs(&data->isoc_anchor);
 898
 899                __set_isoc_interface(hdev, 0);
 900                if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
 901                        usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
 902        }
 903}
 904
 905static void btusb_waker(struct work_struct *work)
 906{
 907        struct btusb_data *data = container_of(work, struct btusb_data, waker);
 908        int err;
 909
 910        err = usb_autopm_get_interface(data->intf);
 911        if (err < 0)
 912                return;
 913
 914        usb_autopm_put_interface(data->intf);
 915}
 916
 917static int btusb_probe(struct usb_interface *intf,
 918                                const struct usb_device_id *id)
 919{
 920        struct usb_endpoint_descriptor *ep_desc;
 921        struct btusb_data *data;
 922        struct hci_dev *hdev;
 923        int i, err;
 924
 925        BT_DBG("intf %p id %p", intf, id);
 926
 927        /* interface numbers are hardcoded in the spec */
 928        if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
 929                return -ENODEV;
 930
 931        if (!id->driver_info) {
 932                const struct usb_device_id *match;
 933                match = usb_match_id(intf, blacklist_table);
 934                if (match)
 935                        id = match;
 936        }
 937
 938        if (id->driver_info == BTUSB_IGNORE)
 939                return -ENODEV;
 940
 941        if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
 942                return -ENODEV;
 943
 944        if (ignore_csr && id->driver_info & BTUSB_CSR)
 945                return -ENODEV;
 946
 947        if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
 948                return -ENODEV;
 949
 950        if (id->driver_info & BTUSB_ATH3012) {
 951                struct usb_device *udev = interface_to_usbdev(intf);
 952
 953                /* Old firmware would otherwise let ath3k driver load
 954                 * patch and sysconfig files */
 955                if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
 956                        return -ENODEV;
 957        }
 958
 959        data = kzalloc(sizeof(*data), GFP_KERNEL);
 960        if (!data)
 961                return -ENOMEM;
 962
 963        for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 964                ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 965
 966                if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
 967                        data->intr_ep = ep_desc;
 968                        continue;
 969                }
 970
 971                if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
 972                        data->bulk_tx_ep = ep_desc;
 973                        continue;
 974                }
 975
 976                if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
 977                        data->bulk_rx_ep = ep_desc;
 978                        continue;
 979                }
 980        }
 981
 982        if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
 983                kfree(data);
 984                return -ENODEV;
 985        }
 986
 987        data->cmdreq_type = USB_TYPE_CLASS;
 988
 989        data->udev = interface_to_usbdev(intf);
 990        data->intf = intf;
 991
 992        spin_lock_init(&data->lock);
 993
 994        INIT_WORK(&data->work, btusb_work);
 995        INIT_WORK(&data->waker, btusb_waker);
 996        spin_lock_init(&data->txlock);
 997
 998        init_usb_anchor(&data->tx_anchor);
 999        init_usb_anchor(&data->intr_anchor);
1000        init_usb_anchor(&data->bulk_anchor);
1001        init_usb_anchor(&data->isoc_anchor);
1002        init_usb_anchor(&data->deferred);
1003
1004        hdev = hci_alloc_dev();
1005        if (!hdev) {
1006                kfree(data);
1007                return -ENOMEM;
1008        }
1009
1010        hdev->bus = HCI_USB;
1011        hci_set_drvdata(hdev, data);
1012
1013        data->hdev = hdev;
1014
1015        SET_HCIDEV_DEV(hdev, &intf->dev);
1016
1017        hdev->open     = btusb_open;
1018        hdev->close    = btusb_close;
1019        hdev->flush    = btusb_flush;
1020        hdev->send     = btusb_send_frame;
1021        hdev->notify   = btusb_notify;
1022
1023        /* Interface numbers are hardcoded in the specification */
1024        data->isoc = usb_ifnum_to_if(data->udev, 1);
1025
1026        if (!reset)
1027                set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1028
1029        if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1030                if (!disable_scofix)
1031                        set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1032        }
1033
1034        if (id->driver_info & BTUSB_BROKEN_ISOC)
1035                data->isoc = NULL;
1036
1037        if (id->driver_info & BTUSB_DIGIANSWER) {
1038                data->cmdreq_type = USB_TYPE_VENDOR;
1039                set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1040        }
1041
1042        if (id->driver_info & BTUSB_CSR) {
1043                struct usb_device *udev = data->udev;
1044
1045                /* Old firmware would otherwise execute USB reset */
1046                if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1047                        set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1048        }
1049
1050        if (id->driver_info & BTUSB_SNIFFER) {
1051                struct usb_device *udev = data->udev;
1052
1053                /* New sniffer firmware has crippled HCI interface */
1054                if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1055                        set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1056
1057                data->isoc = NULL;
1058        }
1059
1060        if (id->driver_info & BTUSB_BCM92035) {
1061                unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1062                struct sk_buff *skb;
1063
1064                skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1065                if (skb) {
1066                        memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1067                        skb_queue_tail(&hdev->driver_init, skb);
1068                }
1069        }
1070
1071        if (data->isoc) {
1072                err = usb_driver_claim_interface(&btusb_driver,
1073                                                        data->isoc, data);
1074                if (err < 0) {
1075                        hci_free_dev(hdev);
1076                        kfree(data);
1077                        return err;
1078                }
1079        }
1080
1081        err = hci_register_dev(hdev);
1082        if (err < 0) {
1083                hci_free_dev(hdev);
1084                kfree(data);
1085                return err;
1086        }
1087
1088        usb_set_intfdata(intf, data);
1089
1090        return 0;
1091}
1092
1093static void btusb_disconnect(struct usb_interface *intf)
1094{
1095        struct btusb_data *data = usb_get_intfdata(intf);
1096        struct hci_dev *hdev;
1097
1098        BT_DBG("intf %p", intf);
1099
1100        if (!data)
1101                return;
1102
1103        hdev = data->hdev;
1104        usb_set_intfdata(data->intf, NULL);
1105
1106        if (data->isoc)
1107                usb_set_intfdata(data->isoc, NULL);
1108
1109        hci_unregister_dev(hdev);
1110
1111        if (intf == data->isoc)
1112                usb_driver_release_interface(&btusb_driver, data->intf);
1113        else if (data->isoc)
1114                usb_driver_release_interface(&btusb_driver, data->isoc);
1115
1116        hci_free_dev(hdev);
1117        kfree(data);
1118}
1119
1120#ifdef CONFIG_PM
1121static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1122{
1123        struct btusb_data *data = usb_get_intfdata(intf);
1124
1125        BT_DBG("intf %p", intf);
1126
1127        if (data->suspend_count++)
1128                return 0;
1129
1130        spin_lock_irq(&data->txlock);
1131        if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1132                set_bit(BTUSB_SUSPENDING, &data->flags);
1133                spin_unlock_irq(&data->txlock);
1134        } else {
1135                spin_unlock_irq(&data->txlock);
1136                data->suspend_count--;
1137                return -EBUSY;
1138        }
1139
1140        cancel_work_sync(&data->work);
1141
1142        btusb_stop_traffic(data);
1143        usb_kill_anchored_urbs(&data->tx_anchor);
1144
1145        return 0;
1146}
1147
1148static void play_deferred(struct btusb_data *data)
1149{
1150        struct urb *urb;
1151        int err;
1152
1153        while ((urb = usb_get_from_anchor(&data->deferred))) {
1154                err = usb_submit_urb(urb, GFP_ATOMIC);
1155                if (err < 0)
1156                        break;
1157
1158                data->tx_in_flight++;
1159        }
1160        usb_scuttle_anchored_urbs(&data->deferred);
1161}
1162
1163static int btusb_resume(struct usb_interface *intf)
1164{
1165        struct btusb_data *data = usb_get_intfdata(intf);
1166        struct hci_dev *hdev = data->hdev;
1167        int err = 0;
1168
1169        BT_DBG("intf %p", intf);
1170
1171        if (--data->suspend_count)
1172                return 0;
1173
1174        if (!test_bit(HCI_RUNNING, &hdev->flags))
1175                goto done;
1176
1177        if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1178                err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1179                if (err < 0) {
1180                        clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1181                        goto failed;
1182                }
1183        }
1184
1185        if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1186                err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1187                if (err < 0) {
1188                        clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1189                        goto failed;
1190                }
1191
1192                btusb_submit_bulk_urb(hdev, GFP_NOIO);
1193        }
1194
1195        if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1196                if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1197                        clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1198                else
1199                        btusb_submit_isoc_urb(hdev, GFP_NOIO);
1200        }
1201
1202        spin_lock_irq(&data->txlock);
1203        play_deferred(data);
1204        clear_bit(BTUSB_SUSPENDING, &data->flags);
1205        spin_unlock_irq(&data->txlock);
1206        schedule_work(&data->work);
1207
1208        return 0;
1209
1210failed:
1211        usb_scuttle_anchored_urbs(&data->deferred);
1212done:
1213        spin_lock_irq(&data->txlock);
1214        clear_bit(BTUSB_SUSPENDING, &data->flags);
1215        spin_unlock_irq(&data->txlock);
1216
1217        return err;
1218}
1219#endif
1220
1221static struct usb_driver btusb_driver = {
1222        .name           = "btusb",
1223        .probe          = btusb_probe,
1224        .disconnect     = btusb_disconnect,
1225#ifdef CONFIG_PM
1226        .suspend        = btusb_suspend,
1227        .resume         = btusb_resume,
1228#endif
1229        .id_table       = btusb_table,
1230        .supports_autosuspend = 1,
1231        .disable_hub_initiated_lpm = 1,
1232};
1233
1234module_usb_driver(btusb_driver);
1235
1236module_param(ignore_dga, bool, 0644);
1237MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1238
1239module_param(ignore_csr, bool, 0644);
1240MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1241
1242module_param(ignore_sniffer, bool, 0644);
1243MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1244
1245module_param(disable_scofix, bool, 0644);
1246MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1247
1248module_param(force_scofix, bool, 0644);
1249MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1250
1251module_param(reset, bool, 0644);
1252MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1253
1254MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1255MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1256MODULE_VERSION(VERSION);
1257MODULE_LICENSE("GPL");
1258
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