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 static int btusb_setup_csr(struct hci_dev *hdev)
 969 {
 970         struct hci_rp_read_local_version *rp;
 971         struct sk_buff *skb;
 972         int ret;
 973
 974         BT_DBG("%s", hdev->name);
 975
 976         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
 977                              HCI_INIT_TIMEOUT);
 978         if (IS_ERR(skb)) {
 979                 BT_ERR("Reading local version failed (%ld)", -PTR_ERR(skb));
 980                 return -PTR_ERR(skb);
 981         }
 982
 983         rp = (struct hci_rp_read_local_version *) skb->data;
 984
 985         if (!rp->status) {
 986                 if (le16_to_cpu(rp->manufacturer) != 10) {
 987                         /* Clear the reset quirk since this is not an actual
 988                          * early Bluetooth 1.1 device from CSR.
 989                          */
 990                         clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
 991
 992                         /* These fake CSR controllers have all a broken
 993                          * stored link key handling and so just disable it.
 994                          */
 995                         set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY,
 996                                 &hdev->quirks);
 997                 }
 998         }
 999
1000         ret = -bt_to_errno(rp->status);
1001
1002         kfree_skb(skb);
1003
1004         return ret;
1005 }
1006
1007 struct intel_version {
1008         u8 status;
1009         u8 hw_platform;
1010         u8 hw_variant;
1011         u8 hw_revision;
1012         u8 fw_variant;
1013         u8 fw_revision;
1014         u8 fw_build_num;
1015         u8 fw_build_ww;
1016         u8 fw_build_yy;
1017         u8 fw_patch_num;
1018 } __packed;
1019
1020 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1021                                                 struct intel_version *ver)
1022 {
1023         const struct firmware *fw;
1024         char fwname[64];
1025         int ret;
1026
1027         snprintf(fwname, sizeof(fwname),
1028                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1029                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
1030                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1031                  ver->fw_build_ww, ver->fw_build_yy);
1032
1033         ret = request_firmware(&fw, fwname, &hdev->dev);
1034         if (ret < 0) {
1035                 if (ret == -EINVAL) {
1036                         BT_ERR("%s Intel firmware file request failed (%d)",
1037                                hdev->name, ret);
1038                         return NULL;
1039                 }
1040
1041                 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1042                        hdev->name, fwname, ret);
1043
1044                 /* If the correct firmware patch file is not found, use the
1045                  * default firmware patch file instead
1046                  */
1047                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1048                          ver->hw_platform, ver->hw_variant);
1049                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1050                         BT_ERR("%s failed to open default Intel fw file: %s",
1051                                hdev->name, fwname);
1052                         return NULL;
1053                 }
1054         }
1055
1056         BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1057
1058         return fw;
1059 }
1060
1061 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1062                                       const struct firmware *fw,
1063                                       const u8 **fw_ptr, int *disable_patch)
1064 {
1065         struct sk_buff *skb;
1066         struct hci_command_hdr *cmd;
1067         const u8 *cmd_param;
1068         struct hci_event_hdr *evt = NULL;
1069         const u8 *evt_param = NULL;
1070         int remain = fw->size - (*fw_ptr - fw->data);
1071
1072         /* The first byte indicates the types of the patch command or event.
1073          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1074          * in the current firmware buffer doesn't start with 0x01 or
1075          * the size of remain buffer is smaller than HCI command header,
1076          * the firmware file is corrupted and it should stop the patching
1077          * process.
1078          */
1079         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1080                 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1081                 return -EINVAL;
1082         }
1083         (*fw_ptr)++;
1084         remain--;
1085
1086         cmd = (struct hci_command_hdr *)(*fw_ptr);
1087         *fw_ptr += sizeof(*cmd);
1088         remain -= sizeof(*cmd);
1089
1090         /* Ensure that the remain firmware data is long enough than the length
1091          * of command parameter. If not, the firmware file is corrupted.
1092          */
1093         if (remain < cmd->plen) {
1094                 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1095                 return -EFAULT;
1096         }
1097
1098         /* If there is a command that loads a patch in the firmware
1099          * file, then enable the patch upon success, otherwise just
1100          * disable the manufacturer mode, for example patch activation
1101          * is not required when the default firmware patch file is used
1102          * because there are no patch data to load.
1103          */
1104         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1105                 *disable_patch = 0;
1106
1107         cmd_param = *fw_ptr;
1108         *fw_ptr += cmd->plen;
1109         remain -= cmd->plen;
1110
1111         /* This reads the expected events when the above command is sent to the
1112          * device. Some vendor commands expects more than one events, for
1113          * example command status event followed by vendor specific event.
1114          * For this case, it only keeps the last expected event. so the command
1115          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1116          * last expected event.
1117          */
1118         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1119                 (*fw_ptr)++;
1120                 remain--;
1121
1122                 evt = (struct hci_event_hdr *)(*fw_ptr);
1123                 *fw_ptr += sizeof(*evt);
1124                 remain -= sizeof(*evt);
1125
1126                 if (remain < evt->plen) {
1127                         BT_ERR("%s Intel fw corrupted: invalid evt len",
1128                                hdev->name);
1129                         return -EFAULT;
1130                 }
1131
1132                 evt_param = *fw_ptr;
1133                 *fw_ptr += evt->plen;
1134                 remain -= evt->plen;
1135         }
1136
1137         /* Every HCI commands in the firmware file has its correspond event.
1138          * If event is not found or remain is smaller than zero, the firmware
1139          * file is corrupted.
1140          */
1141         if (!evt || !evt_param || remain < 0) {
1142                 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1143                 return -EFAULT;
1144         }
1145
1146         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1147                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1148         if (IS_ERR(skb)) {
1149                 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1150                        hdev->name, cmd->opcode, PTR_ERR(skb));
1151                 return PTR_ERR(skb);
1152         }
1153
1154         /* It ensures that the returned event matches the event data read from
1155          * the firmware file. At fist, it checks the length and then
1156          * the contents of the event.
1157          */
1158         if (skb->len != evt->plen) {
1159                 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1160                        le16_to_cpu(cmd->opcode));
1161                 kfree_skb(skb);
1162                 return -EFAULT;
1163         }
1164
1165         if (memcmp(skb->data, evt_param, evt->plen)) {
1166                 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1167                        hdev->name, le16_to_cpu(cmd->opcode));
1168                 kfree_skb(skb);
1169                 return -EFAULT;
1170         }
1171         kfree_skb(skb);
1172
1173         return 0;
1174 }
1175
1176 static int btusb_setup_intel(struct hci_dev *hdev)
1177 {
1178         struct sk_buff *skb;
1179         const struct firmware *fw;
1180         const u8 *fw_ptr;
1181         int disable_patch;
1182         struct intel_version *ver;
1183
1184         const u8 mfg_enable[] = { 0x01, 0x00 };
1185         const u8 mfg_disable[] = { 0x00, 0x00 };
1186         const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
1187         const u8 mfg_reset_activate[] = { 0x00, 0x02 };
1188
1189         BT_DBG("%s", hdev->name);
1190
1191         /* The controller has a bug with the first HCI command sent to it
1192          * returning number of completed commands as zero. This would stall the
1193          * command processing in the Bluetooth core.
1194          *
1195          * As a workaround, send HCI Reset command first which will reset the
1196          * number of completed commands and allow normal command processing
1197          * from now on.
1198          */
1199         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1200         if (IS_ERR(skb)) {
1201                 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1202                        hdev->name, PTR_ERR(skb));
1203                 return PTR_ERR(skb);
1204         }
1205         kfree_skb(skb);
1206
1207         /* Read Intel specific controller version first to allow selection of
1208          * which firmware file to load.
1209          *
1210          * The returned information are hardware variant and revision plus
1211          * firmware variant, revision and build number.
1212          */
1213         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1214         if (IS_ERR(skb)) {
1215                 BT_ERR("%s reading Intel fw version command failed (%ld)",
1216                        hdev->name, PTR_ERR(skb));
1217                 return PTR_ERR(skb);
1218         }
1219
1220         if (skb->len != sizeof(*ver)) {
1221                 BT_ERR("%s Intel version event length mismatch", hdev->name);
1222                 kfree_skb(skb);
1223                 return -EIO;
1224         }
1225
1226         ver = (struct intel_version *)skb->data;
1227         if (ver->status) {
1228                 BT_ERR("%s Intel fw version event failed (%02x)", hdev->name,
1229                        ver->status);
1230                 kfree_skb(skb);
1231                 return -bt_to_errno(ver->status);
1232         }
1233
1234         BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1235                 hdev->name, ver->hw_platform, ver->hw_variant,
1236                 ver->hw_revision, ver->fw_variant,  ver->fw_revision,
1237                 ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
1238                 ver->fw_patch_num);
1239
1240         /* fw_patch_num indicates the version of patch the device currently
1241          * have. If there is no patch data in the device, it is always 0x00.
1242          * So, if it is other than 0x00, no need to patch the deivce again.
1243          */
1244         if (ver->fw_patch_num) {
1245                 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1246                         hdev->name, ver->fw_patch_num);
1247                 kfree_skb(skb);
1248                 return 0;
1249         }
1250
1251         /* Opens the firmware patch file based on the firmware version read
1252          * from the controller. If it fails to open the matching firmware
1253          * patch file, it tries to open the default firmware patch file.
1254          * If no patch file is found, allow the device to operate without
1255          * a patch.
1256          */
1257         fw = btusb_setup_intel_get_fw(hdev, ver);
1258         if (!fw) {
1259                 kfree_skb(skb);
1260                 return 0;
1261         }
1262         fw_ptr = fw->data;
1263
1264         /* This Intel specific command enables the manufacturer mode of the
1265          * controller.
1266          *
1267          * Only while this mode is enabled, the driver can download the
1268          * firmware patch data and configuration parameters.
1269          */
1270         skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
1271         if (IS_ERR(skb)) {
1272                 BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
1273                        hdev->name, PTR_ERR(skb));
1274                 release_firmware(fw);
1275                 return PTR_ERR(skb);
1276         }
1277
1278         if (skb->data[0]) {
1279                 u8 evt_status = skb->data[0];
1280                 BT_ERR("%s enable Intel manufacturer mode event failed (%02x)",
1281                        hdev->name, evt_status);
1282                 kfree_skb(skb);
1283                 release_firmware(fw);
1284                 return -bt_to_errno(evt_status);
1285         }
1286         kfree_skb(skb);
1287
1288         disable_patch = 1;
1289
1290         /* The firmware data file consists of list of Intel specific HCI
1291          * commands and its expected events. The first byte indicates the
1292          * type of the message, either HCI command or HCI event.
1293          *
1294          * It reads the command and its expected event from the firmware file,
1295          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1296          * the returned event is compared with the event read from the firmware
1297          * file and it will continue until all the messages are downloaded to
1298          * the controller.
1299          *
1300          * Once the firmware patching is completed successfully,
1301          * the manufacturer mode is disabled with reset and activating the
1302          * downloaded patch.
1303          *
1304          * If the firmware patching fails, the manufacturer mode is
1305          * disabled with reset and deactivating the patch.
1306          *
1307          * If the default patch file is used, no reset is done when disabling
1308          * the manufacturer.
1309          */
1310         while (fw->size > fw_ptr - fw->data) {
1311                 int ret;
1312
1313                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1314                                                  &disable_patch);
1315                 if (ret < 0)
1316                         goto exit_mfg_deactivate;
1317         }
1318
1319         release_firmware(fw);
1320
1321         if (disable_patch)
1322                 goto exit_mfg_disable;
1323
1324         /* Patching completed successfully and disable the manufacturer mode
1325          * with reset and activate the downloaded firmware patches.
1326          */
1327         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
1328                              mfg_reset_activate, HCI_INIT_TIMEOUT);
1329         if (IS_ERR(skb)) {
1330                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1331                        hdev->name, PTR_ERR(skb));
1332                 return PTR_ERR(skb);
1333         }
1334         kfree_skb(skb);
1335
1336         BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1337                 hdev->name);
1338
1339         return 0;
1340
1341 exit_mfg_disable:
1342         /* Disable the manufacturer mode without reset */
1343         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
1344                              HCI_INIT_TIMEOUT);
1345         if (IS_ERR(skb)) {
1346                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1347                        hdev->name, PTR_ERR(skb));
1348                 return PTR_ERR(skb);
1349         }
1350         kfree_skb(skb);
1351
1352         BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1353         return 0;
1354
1355 exit_mfg_deactivate:
1356         release_firmware(fw);
1357
1358         /* Patching failed. Disable the manufacturer mode with reset and
1359          * deactivate the downloaded firmware patches.
1360          */
1361         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
1362                              mfg_reset_deactivate, HCI_INIT_TIMEOUT);
1363         if (IS_ERR(skb)) {
1364                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1365                        hdev->name, PTR_ERR(skb));
1366                 return PTR_ERR(skb);
1367         }
1368         kfree_skb(skb);
1369
1370         BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1371                 hdev->name);
1372
1373         return 0;
1374 }
1375
1376 static int btusb_probe(struct usb_interface *intf,
1377                                 const struct usb_device_id *id)
1378 {
1379         struct usb_endpoint_descriptor *ep_desc;
1380         struct btusb_data *data;
1381         struct hci_dev *hdev;
1382         int i, err;
1383
1384         BT_DBG("intf %p id %p", intf, id);
1385
1386         /* interface numbers are hardcoded in the spec */
1387         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
1388                 return -ENODEV;
1389
1390         if (!id->driver_info) {
1391                 const struct usb_device_id *match;
1392                 match = usb_match_id(intf, blacklist_table);
1393                 if (match)
1394                         id = match;
1395         }
1396
1397         if (id->driver_info == BTUSB_IGNORE)
1398                 return -ENODEV;
1399
1400         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
1401                 return -ENODEV;
1402
1403         if (ignore_csr && id->driver_info & BTUSB_CSR)
1404                 return -ENODEV;
1405
1406         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
1407                 return -ENODEV;
1408
1409         if (id->driver_info & BTUSB_ATH3012) {
1410                 struct usb_device *udev = interface_to_usbdev(intf);
1411
1412                 /* Old firmware would otherwise let ath3k driver load
1413                  * patch and sysconfig files */
1414                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
1415                         return -ENODEV;
1416         }
1417
1418         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
1419         if (!data)
1420                 return -ENOMEM;
1421
1422         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1423                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1424
1425                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
1426                         data->intr_ep = ep_desc;
1427                         continue;
1428                 }
1429
1430                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
1431                         data->bulk_tx_ep = ep_desc;
1432                         continue;
1433                 }
1434
1435                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
1436                         data->bulk_rx_ep = ep_desc;
1437                         continue;
1438                 }
1439         }
1440
1441         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
1442                 return -ENODEV;
1443
1444         data->cmdreq_type = USB_TYPE_CLASS;
1445
1446         data->udev = interface_to_usbdev(intf);
1447         data->intf = intf;
1448
1449         spin_lock_init(&data->lock);
1450
1451         INIT_WORK(&data->work, btusb_work);
1452         INIT_WORK(&data->waker, btusb_waker);
1453         spin_lock_init(&data->txlock);
1454
1455         init_usb_anchor(&data->tx_anchor);
1456         init_usb_anchor(&data->intr_anchor);
1457         init_usb_anchor(&data->bulk_anchor);
1458         init_usb_anchor(&data->isoc_anchor);
1459         init_usb_anchor(&data->deferred);
1460
1461         hdev = hci_alloc_dev();
1462         if (!hdev)
1463                 return -ENOMEM;
1464
1465         hdev->bus = HCI_USB;
1466         hci_set_drvdata(hdev, data);
1467
1468         data->hdev = hdev;
1469
1470         SET_HCIDEV_DEV(hdev, &intf->dev);
1471
1472         hdev->open   = btusb_open;
1473         hdev->close  = btusb_close;
1474         hdev->flush  = btusb_flush;
1475         hdev->send   = btusb_send_frame;
1476         hdev->notify = btusb_notify;
1477
1478         if (id->driver_info & BTUSB_BCM92035)
1479                 hdev->setup = btusb_setup_bcm92035;
1480
1481         if (id->driver_info & BTUSB_INTEL) {
1482                 usb_enable_autosuspend(data->udev);
1483                 hdev->setup = btusb_setup_intel;
1484         }
1485
1486         /* Interface numbers are hardcoded in the specification */
1487         data->isoc = usb_ifnum_to_if(data->udev, 1);
1488
1489         if (!reset)
1490                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1491
1492         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1493                 if (!disable_scofix)
1494                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1495         }
1496
1497         if (id->driver_info & BTUSB_BROKEN_ISOC)
1498                 data->isoc = NULL;
1499
1500         if (id->driver_info & BTUSB_DIGIANSWER) {
1501                 data->cmdreq_type = USB_TYPE_VENDOR;
1502                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1503         }
1504
1505         if (id->driver_info & BTUSB_CSR) {
1506                 struct usb_device *udev = data->udev;
1507                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
1508
1509                 /* Old firmware would otherwise execute USB reset */
1510                 if (bcdDevice < 0x117)
1511                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1512
1513                 /* Fake CSR devices with broken commands */
1514                 if (bcdDevice <= 0x100)
1515                         hdev->setup = btusb_setup_csr;
1516         }
1517
1518         if (id->driver_info & BTUSB_SNIFFER) {
1519                 struct usb_device *udev = data->udev;
1520
1521                 /* New sniffer firmware has crippled HCI interface */
1522                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1523                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1524
1525                 data->isoc = NULL;
1526         }
1527
1528         if (data->isoc) {
1529                 err = usb_driver_claim_interface(&btusb_driver,
1530                                                         data->isoc, data);
1531                 if (err < 0) {
1532                         hci_free_dev(hdev);
1533                         return err;
1534                 }
1535         }
1536
1537         err = hci_register_dev(hdev);
1538         if (err < 0) {
1539                 hci_free_dev(hdev);
1540                 return err;
1541         }
1542
1543         usb_set_intfdata(intf, data);
1544
1545         return 0;
1546 }
1547
1548 static void btusb_disconnect(struct usb_interface *intf)
1549 {
1550         struct btusb_data *data = usb_get_intfdata(intf);
1551         struct hci_dev *hdev;
1552
1553         BT_DBG("intf %p", intf);
1554
1555         if (!data)
1556                 return;
1557
1558         hdev = data->hdev;
1559         usb_set_intfdata(data->intf, NULL);
1560
1561         if (data->isoc)
1562                 usb_set_intfdata(data->isoc, NULL);
1563
1564         hci_unregister_dev(hdev);
1565
1566         if (intf == data->isoc)
1567                 usb_driver_release_interface(&btusb_driver, data->intf);
1568         else if (data->isoc)
1569                 usb_driver_release_interface(&btusb_driver, data->isoc);
1570
1571         hci_free_dev(hdev);
1572 }
1573
1574 #ifdef CONFIG_PM
1575 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1576 {
1577         struct btusb_data *data = usb_get_intfdata(intf);
1578
1579         BT_DBG("intf %p", intf);
1580
1581         if (data->suspend_count++)
1582                 return 0;
1583
1584         spin_lock_irq(&data->txlock);
1585         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1586                 set_bit(BTUSB_SUSPENDING, &data->flags);
1587                 spin_unlock_irq(&data->txlock);
1588         } else {
1589                 spin_unlock_irq(&data->txlock);
1590                 data->suspend_count--;
1591                 return -EBUSY;
1592         }
1593
1594         cancel_work_sync(&data->work);
1595
1596         btusb_stop_traffic(data);
1597         usb_kill_anchored_urbs(&data->tx_anchor);
1598
1599         return 0;
1600 }
1601
1602 static void play_deferred(struct btusb_data *data)
1603 {
1604         struct urb *urb;
1605         int err;
1606
1607         while ((urb = usb_get_from_anchor(&data->deferred))) {
1608                 err = usb_submit_urb(urb, GFP_ATOMIC);
1609                 if (err < 0)
1610                         break;
1611
1612                 data->tx_in_flight++;
1613         }
1614         usb_scuttle_anchored_urbs(&data->deferred);
1615 }
1616
1617 static int btusb_resume(struct usb_interface *intf)
1618 {
1619         struct btusb_data *data = usb_get_intfdata(intf);
1620         struct hci_dev *hdev = data->hdev;
1621         int err = 0;
1622
1623         BT_DBG("intf %p", intf);
1624
1625         if (--data->suspend_count)
1626                 return 0;
1627
1628         if (!test_bit(HCI_RUNNING, &hdev->flags))
1629                 goto done;
1630
1631         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1632                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1633                 if (err < 0) {
1634                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1635                         goto failed;
1636                 }
1637         }
1638
1639         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1640                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1641                 if (err < 0) {
1642                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1643                         goto failed;
1644                 }
1645
1646                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1647         }
1648
1649         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1650                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1651                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1652                 else
1653                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1654         }
1655
1656         spin_lock_irq(&data->txlock);
1657         play_deferred(data);
1658         clear_bit(BTUSB_SUSPENDING, &data->flags);
1659         spin_unlock_irq(&data->txlock);
1660         schedule_work(&data->work);
1661
1662         return 0;
1663
1664 failed:
1665         usb_scuttle_anchored_urbs(&data->deferred);
1666 done:
1667         spin_lock_irq(&data->txlock);
1668         clear_bit(BTUSB_SUSPENDING, &data->flags);
1669         spin_unlock_irq(&data->txlock);
1670
1671         return err;
1672 }
1673 #endif
1674
1675 static struct usb_driver btusb_driver = {
1676         .name           = "btusb",
1677         .probe          = btusb_probe,
1678         .disconnect     = btusb_disconnect,
1679 #ifdef CONFIG_PM
1680         .suspend        = btusb_suspend,
1681         .resume         = btusb_resume,
1682 #endif
1683         .id_table       = btusb_table,
1684         .supports_autosuspend = 1,
1685         .disable_hub_initiated_lpm = 1,
1686 };
1687
1688 module_usb_driver(btusb_driver);
1689
1690 module_param(ignore_dga, bool, 0644);
1691 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1692
1693 module_param(ignore_csr, bool, 0644);
1694 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1695
1696 module_param(ignore_sniffer, bool, 0644);
1697 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1698
1699 module_param(disable_scofix, bool, 0644);
1700 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1701
1702 module_param(force_scofix, bool, 0644);
1703 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1704
1705 module_param(reset, bool, 0644);
1706 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1707
1708 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1709 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1710 MODULE_VERSION(VERSION);
1711 MODULE_LICENSE("GPL");