Pileus Git - ~andy/linux/blob - drivers/bluetooth/btusb.c

   1 /*
   2  *
   3  *  Generic Bluetooth USB driver
   4  *
   5  *  Copyright (C) 2005-2008  Marcel Holtmann <marcel@holtmann.org>
   6  *
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, write to the Free Software
  20  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  *
  22  */
  23
  24 #include <linux/module.h>
  25 #include <linux/usb.h>
  26 #include <linux/firmware.h>
  27
  28 #include <net/bluetooth/bluetooth.h>
  29 #include <net/bluetooth/hci_core.h>
  30
  31 #define VERSION "0.6"
  32
  33 static bool ignore_dga;
  34 static bool ignore_csr;
  35 static bool ignore_sniffer;
  36 static bool disable_scofix;
  37 static bool force_scofix;
  38
  39 static bool reset = 1;
  40
  41 static struct usb_driver btusb_driver;
  42
  43 #define BTUSB_IGNORE            0x01
  44 #define BTUSB_DIGIANSWER        0x02
  45 #define BTUSB_CSR               0x04
  46 #define BTUSB_SNIFFER           0x08
  47 #define BTUSB_BCM92035          0x10
  48 #define BTUSB_BROKEN_ISOC       0x20
  49 #define BTUSB_WRONG_SCO_MTU     0x40
  50 #define BTUSB_ATH3012           0x80
  51 #define BTUSB_INTEL             0x100
  52
  53 static const struct usb_device_id btusb_table[] = {
  54         /* Generic Bluetooth USB device */
  55         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  56
  57         /* Apple-specific (Broadcom) devices */
  58         { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01) },
  59
  60         /* MediaTek MT76x0E */
  61         { USB_DEVICE(0x0e8d, 0x763f) },
  62
  63         /* Broadcom SoftSailing reporting vendor specific */
  64         { USB_DEVICE(0x0a5c, 0x21e1) },
  65
  66         /* Apple MacBookPro 7,1 */
  67         { USB_DEVICE(0x05ac, 0x8213) },
  68
  69         /* Apple iMac11,1 */
  70         { USB_DEVICE(0x05ac, 0x8215) },
  71
  72         /* Apple MacBookPro6,2 */
  73         { USB_DEVICE(0x05ac, 0x8218) },
  74
  75         /* Apple MacBookAir3,1, MacBookAir3,2 */
  76         { USB_DEVICE(0x05ac, 0x821b) },
  77
  78         /* Apple MacBookAir4,1 */
  79         { USB_DEVICE(0x05ac, 0x821f) },
  80
  81         /* Apple MacBookPro8,2 */
  82         { USB_DEVICE(0x05ac, 0x821a) },
  83
  84         /* Apple MacMini5,1 */
  85         { USB_DEVICE(0x05ac, 0x8281) },
  86
  87         /* AVM BlueFRITZ! USB v2.0 */
  88         { USB_DEVICE(0x057c, 0x3800) },
  89
  90         /* Bluetooth Ultraport Module from IBM */
  91         { USB_DEVICE(0x04bf, 0x030a) },
  92
  93         /* ALPS Modules with non-standard id */
  94         { USB_DEVICE(0x044e, 0x3001) },
  95         { USB_DEVICE(0x044e, 0x3002) },
  96
  97         /* Ericsson with non-standard id */
  98         { USB_DEVICE(0x0bdb, 0x1002) },
  99
 100         /* Canyon CN-BTU1 with HID interfaces */
 101         { USB_DEVICE(0x0c10, 0x0000) },
 102
 103         /* Broadcom BCM20702A0 */
 104         { USB_DEVICE(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
 122 MODULE_DEVICE_TABLE(usb, btusb_table);
 123
 124 static 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
 242 struct 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
 276 static 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
 290 static 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
 330 static 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
 378 static 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
 418 static 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
 464 static 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
 511 static 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
 532 static 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
 583 static 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
 600 done:
 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
 610 static 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
 626 done:
 627         kfree(urb->setup_packet);
 628
 629         kfree_skb(skb);
 630 }
 631
 632 static 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
 664 done:
 665         usb_autopm_put_interface(data->intf);
 666         return 0;
 667
 668 failed:
 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
 675 static 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
 682 static 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
 707 failed:
 708         usb_scuttle_anchored_urbs(&data->deferred);
 709         return 0;
 710 }
 711
 712 static 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
 723 static 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
 816 skip_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
 830 done:
 831         usb_free_urb(urb);
 832         return err;
 833 }
 834
 835 static 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
 847 static 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
 890 static 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
 940 static 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
 952 static 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
 968 struct intel_version {
 969         u8 status;
 970         u8 hw_platform;
 971         u8 hw_variant;
 972         u8 hw_revision;
 973         u8 fw_variant;
 974         u8 fw_revision;
 975         u8 fw_build_num;
 976         u8 fw_build_ww;
 977         u8 fw_build_yy;
 978         u8 fw_patch_num;
 979 } __packed;
 980
 981 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
 982                                                 struct intel_version *ver)
 983 {
 984         const struct firmware *fw;
 985         char fwname[64];
 986         int ret;
 987
 988         snprintf(fwname, sizeof(fwname),
 989                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
 990                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
 991                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
 992                  ver->fw_build_ww, ver->fw_build_yy);
 993
 994         ret = request_firmware(&fw, fwname, &hdev->dev);
 995         if (ret < 0) {
 996                 if (ret == -EINVAL) {
 997                         BT_ERR("%s Intel firmware file request failed (%d)",
 998                                hdev->name, ret);
 999                         return NULL;
1000                 }
1001
1002                 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1003                        hdev->name, fwname, ret);
1004
1005                 /* If the correct firmware patch file is not found, use the
1006                  * default firmware patch file instead
1007                  */
1008                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1009                          ver->hw_platform, ver->hw_variant);
1010                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1011                         BT_ERR("%s failed to open default Intel fw file: %s",
1012                                hdev->name, fwname);
1013                         return NULL;
1014                 }
1015         }
1016
1017         BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1018
1019         return fw;
1020 }
1021
1022 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1023                                       const struct firmware *fw,
1024                                       const u8 **fw_ptr, int *disable_patch)
1025 {
1026         struct sk_buff *skb;
1027         struct hci_command_hdr *cmd;
1028         const u8 *cmd_param;
1029         struct hci_event_hdr *evt = NULL;
1030         const u8 *evt_param = NULL;
1031         int remain = fw->size - (*fw_ptr - fw->data);
1032
1033         /* The first byte indicates the types of the patch command or event.
1034          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1035          * in the current firmware buffer doesn't start with 0x01 or
1036          * the size of remain buffer is smaller than HCI command header,
1037          * the firmware file is corrupted and it should stop the patching
1038          * process.
1039          */
1040         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1041                 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1042                 return -EINVAL;
1043         }
1044         (*fw_ptr)++;
1045         remain--;
1046
1047         cmd = (struct hci_command_hdr *)(*fw_ptr);
1048         *fw_ptr += sizeof(*cmd);
1049         remain -= sizeof(*cmd);
1050
1051         /* Ensure that the remain firmware data is long enough than the length
1052          * of command parameter. If not, the firmware file is corrupted.
1053          */
1054         if (remain < cmd->plen) {
1055                 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1056                 return -EFAULT;
1057         }
1058
1059         /* If there is a command that loads a patch in the firmware
1060          * file, then enable the patch upon success, otherwise just
1061          * disable the manufacturer mode, for example patch activation
1062          * is not required when the default firmware patch file is used
1063          * because there are no patch data to load.
1064          */
1065         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1066                 *disable_patch = 0;
1067
1068         cmd_param = *fw_ptr;
1069         *fw_ptr += cmd->plen;
1070         remain -= cmd->plen;
1071
1072         /* This reads the expected events when the above command is sent to the
1073          * device. Some vendor commands expects more than one events, for
1074          * example command status event followed by vendor specific event.
1075          * For this case, it only keeps the last expected event. so the command
1076          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1077          * last expected event.
1078          */
1079         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1080                 (*fw_ptr)++;
1081                 remain--;
1082
1083                 evt = (struct hci_event_hdr *)(*fw_ptr);
1084                 *fw_ptr += sizeof(*evt);
1085                 remain -= sizeof(*evt);
1086
1087                 if (remain < evt->plen) {
1088                         BT_ERR("%s Intel fw corrupted: invalid evt len",
1089                                hdev->name);
1090                         return -EFAULT;
1091                 }
1092
1093                 evt_param = *fw_ptr;
1094                 *fw_ptr += evt->plen;
1095                 remain -= evt->plen;
1096         }
1097
1098         /* Every HCI commands in the firmware file has its correspond event.
1099          * If event is not found or remain is smaller than zero, the firmware
1100          * file is corrupted.
1101          */
1102         if (!evt || !evt_param || remain < 0) {
1103                 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1104                 return -EFAULT;
1105         }
1106
1107         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1108                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1109         if (IS_ERR(skb)) {
1110                 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1111                        hdev->name, cmd->opcode, PTR_ERR(skb));
1112                 return PTR_ERR(skb);
1113         }
1114
1115         /* It ensures that the returned event matches the event data read from
1116          * the firmware file. At fist, it checks the length and then
1117          * the contents of the event.
1118          */
1119         if (skb->len != evt->plen) {
1120                 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1121                        le16_to_cpu(cmd->opcode));
1122                 kfree_skb(skb);
1123                 return -EFAULT;
1124         }
1125
1126         if (memcmp(skb->data, evt_param, evt->plen)) {
1127                 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1128                        hdev->name, le16_to_cpu(cmd->opcode));
1129                 kfree_skb(skb);
1130                 return -EFAULT;
1131         }
1132         kfree_skb(skb);
1133
1134         return 0;
1135 }
1136
1137 static int btusb_setup_intel(struct hci_dev *hdev)
1138 {
1139         struct sk_buff *skb;
1140         const struct firmware *fw;
1141         const u8 *fw_ptr;
1142         int disable_patch;
1143         struct intel_version *ver;
1144
1145         const u8 mfg_enable[] = { 0x01, 0x00 };
1146         const u8 mfg_disable[] = { 0x00, 0x00 };
1147         const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
1148         const u8 mfg_reset_activate[] = { 0x00, 0x02 };
1149
1150         BT_DBG("%s", hdev->name);
1151
1152         /* The controller has a bug with the first HCI command sent to it
1153          * returning number of completed commands as zero. This would stall the
1154          * command processing in the Bluetooth core.
1155          *
1156          * As a workaround, send HCI Reset command first which will reset the
1157          * number of completed commands and allow normal command processing
1158          * from now on.
1159          */
1160         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1161         if (IS_ERR(skb)) {
1162                 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1163                        hdev->name, PTR_ERR(skb));
1164                 return PTR_ERR(skb);
1165         }
1166         kfree_skb(skb);
1167
1168         /* Read Intel specific controller version first to allow selection of
1169          * which firmware file to load.
1170          *
1171          * The returned information are hardware variant and revision plus
1172          * firmware variant, revision and build number.
1173          */
1174         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1175         if (IS_ERR(skb)) {
1176                 BT_ERR("%s reading Intel fw version command failed (%ld)",
1177                        hdev->name, PTR_ERR(skb));
1178                 return PTR_ERR(skb);
1179         }
1180
1181         if (skb->len != sizeof(*ver)) {
1182                 BT_ERR("%s Intel version event length mismatch", hdev->name);
1183                 kfree_skb(skb);
1184                 return -EIO;
1185         }
1186
1187         ver = (struct intel_version *)skb->data;
1188         if (ver->status) {
1189                 BT_ERR("%s Intel fw version event failed (%02x)", hdev->name,
1190                        ver->status);
1191                 kfree_skb(skb);
1192                 return -bt_to_errno(ver->status);
1193         }
1194
1195         BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1196                 hdev->name, ver->hw_platform, ver->hw_variant,
1197                 ver->hw_revision, ver->fw_variant,  ver->fw_revision,
1198                 ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
1199                 ver->fw_patch_num);
1200
1201         /* fw_patch_num indicates the version of patch the device currently
1202          * have. If there is no patch data in the device, it is always 0x00.
1203          * So, if it is other than 0x00, no need to patch the deivce again.
1204          */
1205         if (ver->fw_patch_num) {
1206                 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1207                         hdev->name, ver->fw_patch_num);
1208                 kfree_skb(skb);
1209                 return 0;
1210         }
1211
1212         /* Opens the firmware patch file based on the firmware version read
1213          * from the controller. If it fails to open the matching firmware
1214          * patch file, it tries to open the default firmware patch file.
1215          * If no patch file is found, allow the device to operate without
1216          * a patch.
1217          */
1218         fw = btusb_setup_intel_get_fw(hdev, ver);
1219         if (!fw) {
1220                 kfree_skb(skb);
1221                 return 0;
1222         }
1223         fw_ptr = fw->data;
1224
1225         /* This Intel specific command enables the manufacturer mode of the
1226          * controller.
1227          *
1228          * Only while this mode is enabled, the driver can download the
1229          * firmware patch data and configuration parameters.
1230          */
1231         skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
1232         if (IS_ERR(skb)) {
1233                 BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
1234                        hdev->name, PTR_ERR(skb));
1235                 release_firmware(fw);
1236                 return PTR_ERR(skb);
1237         }
1238
1239         if (skb->data[0]) {
1240                 u8 evt_status = skb->data[0];
1241                 BT_ERR("%s enable Intel manufacturer mode event failed (%02x)",
1242                        hdev->name, evt_status);
1243                 kfree_skb(skb);
1244                 release_firmware(fw);
1245                 return -bt_to_errno(evt_status);
1246         }
1247         kfree_skb(skb);
1248
1249         disable_patch = 1;
1250
1251         /* The firmware data file consists of list of Intel specific HCI
1252          * commands and its expected events. The first byte indicates the
1253          * type of the message, either HCI command or HCI event.
1254          *
1255          * It reads the command and its expected event from the firmware file,
1256          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1257          * the returned event is compared with the event read from the firmware
1258          * file and it will continue until all the messages are downloaded to
1259          * the controller.
1260          *
1261          * Once the firmware patching is completed successfully,
1262          * the manufacturer mode is disabled with reset and activating the
1263          * downloaded patch.
1264          *
1265          * If the firmware patching fails, the manufacturer mode is
1266          * disabled with reset and deactivating the patch.
1267          *
1268          * If the default patch file is used, no reset is done when disabling
1269          * the manufacturer.
1270          */
1271         while (fw->size > fw_ptr - fw->data) {
1272                 int ret;
1273
1274                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1275                                                  &disable_patch);
1276                 if (ret < 0)
1277                         goto exit_mfg_deactivate;
1278         }
1279
1280         release_firmware(fw);
1281
1282         if (disable_patch)
1283                 goto exit_mfg_disable;
1284
1285         /* Patching completed successfully and disable the manufacturer mode
1286          * with reset and activate the downloaded firmware patches.
1287          */
1288         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
1289                              mfg_reset_activate, HCI_INIT_TIMEOUT);
1290         if (IS_ERR(skb)) {
1291                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1292                        hdev->name, PTR_ERR(skb));
1293                 return PTR_ERR(skb);
1294         }
1295         kfree_skb(skb);
1296
1297         BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1298                 hdev->name);
1299
1300         return 0;
1301
1302 exit_mfg_disable:
1303         /* Disable the manufacturer mode without reset */
1304         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
1305                              HCI_INIT_TIMEOUT);
1306         if (IS_ERR(skb)) {
1307                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1308                        hdev->name, PTR_ERR(skb));
1309                 return PTR_ERR(skb);
1310         }
1311         kfree_skb(skb);
1312
1313         BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1314         return 0;
1315
1316 exit_mfg_deactivate:
1317         release_firmware(fw);
1318
1319         /* Patching failed. Disable the manufacturer mode with reset and
1320          * deactivate the downloaded firmware patches.
1321          */
1322         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
1323                              mfg_reset_deactivate, HCI_INIT_TIMEOUT);
1324         if (IS_ERR(skb)) {
1325                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1326                        hdev->name, PTR_ERR(skb));
1327                 return PTR_ERR(skb);
1328         }
1329         kfree_skb(skb);
1330
1331         BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1332                 hdev->name);
1333
1334         return 0;
1335 }
1336
1337 static int btusb_probe(struct usb_interface *intf,
1338                                 const struct usb_device_id *id)
1339 {
1340         struct usb_endpoint_descriptor *ep_desc;
1341         struct btusb_data *data;
1342         struct hci_dev *hdev;
1343         int i, err;
1344
1345         BT_DBG("intf %p id %p", intf, id);
1346
1347         /* interface numbers are hardcoded in the spec */
1348         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
1349                 return -ENODEV;
1350
1351         if (!id->driver_info) {
1352                 const struct usb_device_id *match;
1353                 match = usb_match_id(intf, blacklist_table);
1354                 if (match)
1355                         id = match;
1356         }
1357
1358         if (id->driver_info == BTUSB_IGNORE)
1359                 return -ENODEV;
1360
1361         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
1362                 return -ENODEV;
1363
1364         if (ignore_csr && id->driver_info & BTUSB_CSR)
1365                 return -ENODEV;
1366
1367         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
1368                 return -ENODEV;
1369
1370         if (id->driver_info & BTUSB_ATH3012) {
1371                 struct usb_device *udev = interface_to_usbdev(intf);
1372
1373                 /* Old firmware would otherwise let ath3k driver load
1374                  * patch and sysconfig files */
1375                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
1376                         return -ENODEV;
1377         }
1378
1379         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
1380         if (!data)
1381                 return -ENOMEM;
1382
1383         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1384                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1385
1386                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
1387                         data->intr_ep = ep_desc;
1388                         continue;
1389                 }
1390
1391                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
1392                         data->bulk_tx_ep = ep_desc;
1393                         continue;
1394                 }
1395
1396                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
1397                         data->bulk_rx_ep = ep_desc;
1398                         continue;
1399                 }
1400         }
1401
1402         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
1403                 return -ENODEV;
1404
1405         data->cmdreq_type = USB_TYPE_CLASS;
1406
1407         data->udev = interface_to_usbdev(intf);
1408         data->intf = intf;
1409
1410         spin_lock_init(&data->lock);
1411
1412         INIT_WORK(&data->work, btusb_work);
1413         INIT_WORK(&data->waker, btusb_waker);
1414         spin_lock_init(&data->txlock);
1415
1416         init_usb_anchor(&data->tx_anchor);
1417         init_usb_anchor(&data->intr_anchor);
1418         init_usb_anchor(&data->bulk_anchor);
1419         init_usb_anchor(&data->isoc_anchor);
1420         init_usb_anchor(&data->deferred);
1421
1422         hdev = hci_alloc_dev();
1423         if (!hdev)
1424                 return -ENOMEM;
1425
1426         hdev->bus = HCI_USB;
1427         hci_set_drvdata(hdev, data);
1428
1429         data->hdev = hdev;
1430
1431         SET_HCIDEV_DEV(hdev, &intf->dev);
1432
1433         hdev->open   = btusb_open;
1434         hdev->close  = btusb_close;
1435         hdev->flush  = btusb_flush;
1436         hdev->send   = btusb_send_frame;
1437         hdev->notify = btusb_notify;
1438
1439         if (id->driver_info & BTUSB_BCM92035)
1440                 hdev->setup = btusb_setup_bcm92035;
1441
1442         if (id->driver_info & BTUSB_INTEL) {
1443                 usb_enable_autosuspend(data->udev);
1444                 hdev->setup = btusb_setup_intel;
1445         }
1446
1447         /* Interface numbers are hardcoded in the specification */
1448         data->isoc = usb_ifnum_to_if(data->udev, 1);
1449
1450         if (!reset)
1451                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1452
1453         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1454                 if (!disable_scofix)
1455                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1456         }
1457
1458         if (id->driver_info & BTUSB_BROKEN_ISOC)
1459                 data->isoc = NULL;
1460
1461         if (id->driver_info & BTUSB_DIGIANSWER) {
1462                 data->cmdreq_type = USB_TYPE_VENDOR;
1463                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1464         }
1465
1466         if (id->driver_info & BTUSB_CSR) {
1467                 struct usb_device *udev = data->udev;
1468
1469                 /* Old firmware would otherwise execute USB reset */
1470                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1471                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1472         }
1473
1474         if (id->driver_info & BTUSB_SNIFFER) {
1475                 struct usb_device *udev = data->udev;
1476
1477                 /* New sniffer firmware has crippled HCI interface */
1478                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1479                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1480
1481                 data->isoc = NULL;
1482         }
1483
1484         if (data->isoc) {
1485                 err = usb_driver_claim_interface(&btusb_driver,
1486                                                         data->isoc, data);
1487                 if (err < 0) {
1488                         hci_free_dev(hdev);
1489                         return err;
1490                 }
1491         }
1492
1493         err = hci_register_dev(hdev);
1494         if (err < 0) {
1495                 hci_free_dev(hdev);
1496                 return err;
1497         }
1498
1499         usb_set_intfdata(intf, data);
1500
1501         return 0;
1502 }
1503
1504 static void btusb_disconnect(struct usb_interface *intf)
1505 {
1506         struct btusb_data *data = usb_get_intfdata(intf);
1507         struct hci_dev *hdev;
1508
1509         BT_DBG("intf %p", intf);
1510
1511         if (!data)
1512                 return;
1513
1514         hdev = data->hdev;
1515         usb_set_intfdata(data->intf, NULL);
1516
1517         if (data->isoc)
1518                 usb_set_intfdata(data->isoc, NULL);
1519
1520         hci_unregister_dev(hdev);
1521
1522         if (intf == data->isoc)
1523                 usb_driver_release_interface(&btusb_driver, data->intf);
1524         else if (data->isoc)
1525                 usb_driver_release_interface(&btusb_driver, data->isoc);
1526
1527         hci_free_dev(hdev);
1528 }
1529
1530 #ifdef CONFIG_PM
1531 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1532 {
1533         struct btusb_data *data = usb_get_intfdata(intf);
1534
1535         BT_DBG("intf %p", intf);
1536
1537         if (data->suspend_count++)
1538                 return 0;
1539
1540         spin_lock_irq(&data->txlock);
1541         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1542                 set_bit(BTUSB_SUSPENDING, &data->flags);
1543                 spin_unlock_irq(&data->txlock);
1544         } else {
1545                 spin_unlock_irq(&data->txlock);
1546                 data->suspend_count--;
1547                 return -EBUSY;
1548         }
1549
1550         cancel_work_sync(&data->work);
1551
1552         btusb_stop_traffic(data);
1553         usb_kill_anchored_urbs(&data->tx_anchor);
1554
1555         return 0;
1556 }
1557
1558 static void play_deferred(struct btusb_data *data)
1559 {
1560         struct urb *urb;
1561         int err;
1562
1563         while ((urb = usb_get_from_anchor(&data->deferred))) {
1564                 err = usb_submit_urb(urb, GFP_ATOMIC);
1565                 if (err < 0)
1566                         break;
1567
1568                 data->tx_in_flight++;
1569         }
1570         usb_scuttle_anchored_urbs(&data->deferred);
1571 }
1572
1573 static int btusb_resume(struct usb_interface *intf)
1574 {
1575         struct btusb_data *data = usb_get_intfdata(intf);
1576         struct hci_dev *hdev = data->hdev;
1577         int err = 0;
1578
1579         BT_DBG("intf %p", intf);
1580
1581         if (--data->suspend_count)
1582                 return 0;
1583
1584         if (!test_bit(HCI_RUNNING, &hdev->flags))
1585                 goto done;
1586
1587         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1588                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1589                 if (err < 0) {
1590                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1591                         goto failed;
1592                 }
1593         }
1594
1595         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1596                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1597                 if (err < 0) {
1598                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1599                         goto failed;
1600                 }
1601
1602                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1603         }
1604
1605         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1606                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1607                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1608                 else
1609                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1610         }
1611
1612         spin_lock_irq(&data->txlock);
1613         play_deferred(data);
1614         clear_bit(BTUSB_SUSPENDING, &data->flags);
1615         spin_unlock_irq(&data->txlock);
1616         schedule_work(&data->work);
1617
1618         return 0;
1619
1620 failed:
1621         usb_scuttle_anchored_urbs(&data->deferred);
1622 done:
1623         spin_lock_irq(&data->txlock);
1624         clear_bit(BTUSB_SUSPENDING, &data->flags);
1625         spin_unlock_irq(&data->txlock);
1626
1627         return err;
1628 }
1629 #endif
1630
1631 static struct usb_driver btusb_driver = {
1632         .name           = "btusb",
1633         .probe          = btusb_probe,
1634         .disconnect     = btusb_disconnect,
1635 #ifdef CONFIG_PM
1636         .suspend        = btusb_suspend,
1637         .resume         = btusb_resume,
1638 #endif
1639         .id_table       = btusb_table,
1640         .supports_autosuspend = 1,
1641         .disable_hub_initiated_lpm = 1,
1642 };
1643
1644 module_usb_driver(btusb_driver);
1645
1646 module_param(ignore_dga, bool, 0644);
1647 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1648
1649 module_param(ignore_csr, bool, 0644);
1650 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1651
1652 module_param(ignore_sniffer, bool, 0644);
1653 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1654
1655 module_param(disable_scofix, bool, 0644);
1656 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1657
1658 module_param(force_scofix, bool, 0644);
1659 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1660
1661 module_param(reset, bool, 0644);
1662 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1663
1664 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1665 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1666 MODULE_VERSION(VERSION);
1667 MODULE_LICENSE("GPL");