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(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 154         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 155         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 156         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 157         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 158         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 159         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 160         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 161         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 162         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 163         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 164         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 165         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 166
 167         /* Atheros AR5BBU12 with sflash firmware */
 168         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 169
 170         /* Atheros AR5BBU12 with sflash firmware */
 171         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 172         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 173
 174         /* Broadcom BCM2035 */
 175         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 176         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 177         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 178
 179         /* Broadcom BCM2045 */
 180         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 181         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 182
 183         /* IBM/Lenovo ThinkPad with Broadcom chip */
 184         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 185         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 186
 187         /* HP laptop with Broadcom chip */
 188         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 189
 190         /* Dell laptop with Broadcom chip */
 191         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 192
 193         /* Dell Wireless 370 and 410 devices */
 194         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 195         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 196
 197         /* Belkin F8T012 and F8T013 devices */
 198         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 199         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 200
 201         /* Asus WL-BTD202 device */
 202         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 203
 204         /* Kensington Bluetooth USB adapter */
 205         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 206
 207         /* RTX Telecom based adapters with buggy SCO support */
 208         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 209         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 210
 211         /* CONWISE Technology based adapters with buggy SCO support */
 212         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 213
 214         /* Digianswer devices */
 215         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 216         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 217
 218         /* CSR BlueCore Bluetooth Sniffer */
 219         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
 220
 221         /* Frontline ComProbe Bluetooth Sniffer */
 222         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
 223
 224         /* Intel Bluetooth device */
 225         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 226
 227         { }     /* Terminating entry */
 228 };
 229
 230 #define BTUSB_MAX_ISOC_FRAMES   10
 231
 232 #define BTUSB_INTR_RUNNING      0
 233 #define BTUSB_BULK_RUNNING      1
 234 #define BTUSB_ISOC_RUNNING      2
 235 #define BTUSB_SUSPENDING        3
 236 #define BTUSB_DID_ISO_RESUME    4
 237
 238 struct btusb_data {
 239         struct hci_dev       *hdev;
 240         struct usb_device    *udev;
 241         struct usb_interface *intf;
 242         struct usb_interface *isoc;
 243
 244         spinlock_t lock;
 245
 246         unsigned long flags;
 247
 248         struct work_struct work;
 249         struct work_struct waker;
 250
 251         struct usb_anchor tx_anchor;
 252         struct usb_anchor intr_anchor;
 253         struct usb_anchor bulk_anchor;
 254         struct usb_anchor isoc_anchor;
 255         struct usb_anchor deferred;
 256         int tx_in_flight;
 257         spinlock_t txlock;
 258
 259         struct usb_endpoint_descriptor *intr_ep;
 260         struct usb_endpoint_descriptor *bulk_tx_ep;
 261         struct usb_endpoint_descriptor *bulk_rx_ep;
 262         struct usb_endpoint_descriptor *isoc_tx_ep;
 263         struct usb_endpoint_descriptor *isoc_rx_ep;
 264
 265         __u8 cmdreq_type;
 266
 267         unsigned int sco_num;
 268         int isoc_altsetting;
 269         int suspend_count;
 270 };
 271
 272 static int inc_tx(struct btusb_data *data)
 273 {
 274         unsigned long flags;
 275         int rv;
 276
 277         spin_lock_irqsave(&data->txlock, flags);
 278         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
 279         if (!rv)
 280                 data->tx_in_flight++;
 281         spin_unlock_irqrestore(&data->txlock, flags);
 282
 283         return rv;
 284 }
 285
 286 static void btusb_intr_complete(struct urb *urb)
 287 {
 288         struct hci_dev *hdev = urb->context;
 289         struct btusb_data *data = hci_get_drvdata(hdev);
 290         int err;
 291
 292         BT_DBG("%s urb %p status %d count %d", hdev->name,
 293                                         urb, urb->status, urb->actual_length);
 294
 295         if (!test_bit(HCI_RUNNING, &hdev->flags))
 296                 return;
 297
 298         if (urb->status == 0) {
 299                 hdev->stat.byte_rx += urb->actual_length;
 300
 301                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
 302                                                 urb->transfer_buffer,
 303                                                 urb->actual_length) < 0) {
 304                         BT_ERR("%s corrupted event packet", hdev->name);
 305                         hdev->stat.err_rx++;
 306                 }
 307         }
 308
 309         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 310                 return;
 311
 312         usb_mark_last_busy(data->udev);
 313         usb_anchor_urb(urb, &data->intr_anchor);
 314
 315         err = usb_submit_urb(urb, GFP_ATOMIC);
 316         if (err < 0) {
 317                 /* -EPERM: urb is being killed;
 318                  * -ENODEV: device got disconnected */
 319                 if (err != -EPERM && err != -ENODEV)
 320                         BT_ERR("%s urb %p failed to resubmit (%d)",
 321                                                 hdev->name, urb, -err);
 322                 usb_unanchor_urb(urb);
 323         }
 324 }
 325
 326 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 327 {
 328         struct btusb_data *data = hci_get_drvdata(hdev);
 329         struct urb *urb;
 330         unsigned char *buf;
 331         unsigned int pipe;
 332         int err, size;
 333
 334         BT_DBG("%s", hdev->name);
 335
 336         if (!data->intr_ep)
 337                 return -ENODEV;
 338
 339         urb = usb_alloc_urb(0, mem_flags);
 340         if (!urb)
 341                 return -ENOMEM;
 342
 343         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 344
 345         buf = kmalloc(size, mem_flags);
 346         if (!buf) {
 347                 usb_free_urb(urb);
 348                 return -ENOMEM;
 349         }
 350
 351         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 352
 353         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 354                                                 btusb_intr_complete, hdev,
 355                                                 data->intr_ep->bInterval);
 356
 357         urb->transfer_flags |= URB_FREE_BUFFER;
 358
 359         usb_anchor_urb(urb, &data->intr_anchor);
 360
 361         err = usb_submit_urb(urb, mem_flags);
 362         if (err < 0) {
 363                 if (err != -EPERM && err != -ENODEV)
 364                         BT_ERR("%s urb %p submission failed (%d)",
 365                                                 hdev->name, urb, -err);
 366                 usb_unanchor_urb(urb);
 367         }
 368
 369         usb_free_urb(urb);
 370
 371         return err;
 372 }
 373
 374 static void btusb_bulk_complete(struct urb *urb)
 375 {
 376         struct hci_dev *hdev = urb->context;
 377         struct btusb_data *data = hci_get_drvdata(hdev);
 378         int err;
 379
 380         BT_DBG("%s urb %p status %d count %d", hdev->name,
 381                                         urb, urb->status, urb->actual_length);
 382
 383         if (!test_bit(HCI_RUNNING, &hdev->flags))
 384                 return;
 385
 386         if (urb->status == 0) {
 387                 hdev->stat.byte_rx += urb->actual_length;
 388
 389                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
 390                                                 urb->transfer_buffer,
 391                                                 urb->actual_length) < 0) {
 392                         BT_ERR("%s corrupted ACL packet", hdev->name);
 393                         hdev->stat.err_rx++;
 394                 }
 395         }
 396
 397         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 398                 return;
 399
 400         usb_anchor_urb(urb, &data->bulk_anchor);
 401         usb_mark_last_busy(data->udev);
 402
 403         err = usb_submit_urb(urb, GFP_ATOMIC);
 404         if (err < 0) {
 405                 /* -EPERM: urb is being killed;
 406                  * -ENODEV: device got disconnected */
 407                 if (err != -EPERM && err != -ENODEV)
 408                         BT_ERR("%s urb %p failed to resubmit (%d)",
 409                                                 hdev->name, urb, -err);
 410                 usb_unanchor_urb(urb);
 411         }
 412 }
 413
 414 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 415 {
 416         struct btusb_data *data = hci_get_drvdata(hdev);
 417         struct urb *urb;
 418         unsigned char *buf;
 419         unsigned int pipe;
 420         int err, size = HCI_MAX_FRAME_SIZE;
 421
 422         BT_DBG("%s", hdev->name);
 423
 424         if (!data->bulk_rx_ep)
 425                 return -ENODEV;
 426
 427         urb = usb_alloc_urb(0, mem_flags);
 428         if (!urb)
 429                 return -ENOMEM;
 430
 431         buf = kmalloc(size, mem_flags);
 432         if (!buf) {
 433                 usb_free_urb(urb);
 434                 return -ENOMEM;
 435         }
 436
 437         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 438
 439         usb_fill_bulk_urb(urb, data->udev, pipe,
 440                                         buf, size, btusb_bulk_complete, hdev);
 441
 442         urb->transfer_flags |= URB_FREE_BUFFER;
 443
 444         usb_mark_last_busy(data->udev);
 445         usb_anchor_urb(urb, &data->bulk_anchor);
 446
 447         err = usb_submit_urb(urb, mem_flags);
 448         if (err < 0) {
 449                 if (err != -EPERM && err != -ENODEV)
 450                         BT_ERR("%s urb %p submission failed (%d)",
 451                                                 hdev->name, urb, -err);
 452                 usb_unanchor_urb(urb);
 453         }
 454
 455         usb_free_urb(urb);
 456
 457         return err;
 458 }
 459
 460 static void btusb_isoc_complete(struct urb *urb)
 461 {
 462         struct hci_dev *hdev = urb->context;
 463         struct btusb_data *data = hci_get_drvdata(hdev);
 464         int i, err;
 465
 466         BT_DBG("%s urb %p status %d count %d", hdev->name,
 467                                         urb, urb->status, urb->actual_length);
 468
 469         if (!test_bit(HCI_RUNNING, &hdev->flags))
 470                 return;
 471
 472         if (urb->status == 0) {
 473                 for (i = 0; i < urb->number_of_packets; i++) {
 474                         unsigned int offset = urb->iso_frame_desc[i].offset;
 475                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 476
 477                         if (urb->iso_frame_desc[i].status)
 478                                 continue;
 479
 480                         hdev->stat.byte_rx += length;
 481
 482                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
 483                                                 urb->transfer_buffer + offset,
 484                                                                 length) < 0) {
 485                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 486                                 hdev->stat.err_rx++;
 487                         }
 488                 }
 489         }
 490
 491         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 492                 return;
 493
 494         usb_anchor_urb(urb, &data->isoc_anchor);
 495
 496         err = usb_submit_urb(urb, GFP_ATOMIC);
 497         if (err < 0) {
 498                 /* -EPERM: urb is being killed;
 499                  * -ENODEV: device got disconnected */
 500                 if (err != -EPERM && err != -ENODEV)
 501                         BT_ERR("%s urb %p failed to resubmit (%d)",
 502                                                 hdev->name, urb, -err);
 503                 usb_unanchor_urb(urb);
 504         }
 505 }
 506
 507 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 508 {
 509         int i, offset = 0;
 510
 511         BT_DBG("len %d mtu %d", len, mtu);
 512
 513         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 514                                         i++, offset += mtu, len -= mtu) {
 515                 urb->iso_frame_desc[i].offset = offset;
 516                 urb->iso_frame_desc[i].length = mtu;
 517         }
 518
 519         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 520                 urb->iso_frame_desc[i].offset = offset;
 521                 urb->iso_frame_desc[i].length = len;
 522                 i++;
 523         }
 524
 525         urb->number_of_packets = i;
 526 }
 527
 528 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 529 {
 530         struct btusb_data *data = hci_get_drvdata(hdev);
 531         struct urb *urb;
 532         unsigned char *buf;
 533         unsigned int pipe;
 534         int err, size;
 535
 536         BT_DBG("%s", hdev->name);
 537
 538         if (!data->isoc_rx_ep)
 539                 return -ENODEV;
 540
 541         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 542         if (!urb)
 543                 return -ENOMEM;
 544
 545         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 546                                                 BTUSB_MAX_ISOC_FRAMES;
 547
 548         buf = kmalloc(size, mem_flags);
 549         if (!buf) {
 550                 usb_free_urb(urb);
 551                 return -ENOMEM;
 552         }
 553
 554         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 555
 556         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 557                                 hdev, data->isoc_rx_ep->bInterval);
 558
 559         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
 560
 561         __fill_isoc_descriptor(urb, size,
 562                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 563
 564         usb_anchor_urb(urb, &data->isoc_anchor);
 565
 566         err = usb_submit_urb(urb, mem_flags);
 567         if (err < 0) {
 568                 if (err != -EPERM && err != -ENODEV)
 569                         BT_ERR("%s urb %p submission failed (%d)",
 570                                                 hdev->name, urb, -err);
 571                 usb_unanchor_urb(urb);
 572         }
 573
 574         usb_free_urb(urb);
 575
 576         return err;
 577 }
 578
 579 static void btusb_tx_complete(struct urb *urb)
 580 {
 581         struct sk_buff *skb = urb->context;
 582         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 583         struct btusb_data *data = hci_get_drvdata(hdev);
 584
 585         BT_DBG("%s urb %p status %d count %d", hdev->name,
 586                                         urb, urb->status, urb->actual_length);
 587
 588         if (!test_bit(HCI_RUNNING, &hdev->flags))
 589                 goto done;
 590
 591         if (!urb->status)
 592                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 593         else
 594                 hdev->stat.err_tx++;
 595
 596 done:
 597         spin_lock(&data->txlock);
 598         data->tx_in_flight--;
 599         spin_unlock(&data->txlock);
 600
 601         kfree(urb->setup_packet);
 602
 603         kfree_skb(skb);
 604 }
 605
 606 static void btusb_isoc_tx_complete(struct urb *urb)
 607 {
 608         struct sk_buff *skb = urb->context;
 609         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 610
 611         BT_DBG("%s urb %p status %d count %d", hdev->name,
 612                                         urb, urb->status, urb->actual_length);
 613
 614         if (!test_bit(HCI_RUNNING, &hdev->flags))
 615                 goto done;
 616
 617         if (!urb->status)
 618                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 619         else
 620                 hdev->stat.err_tx++;
 621
 622 done:
 623         kfree(urb->setup_packet);
 624
 625         kfree_skb(skb);
 626 }
 627
 628 static int btusb_open(struct hci_dev *hdev)
 629 {
 630         struct btusb_data *data = hci_get_drvdata(hdev);
 631         int err;
 632
 633         BT_DBG("%s", hdev->name);
 634
 635         err = usb_autopm_get_interface(data->intf);
 636         if (err < 0)
 637                 return err;
 638
 639         data->intf->needs_remote_wakeup = 1;
 640
 641         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 642                 goto done;
 643
 644         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 645                 goto done;
 646
 647         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 648         if (err < 0)
 649                 goto failed;
 650
 651         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 652         if (err < 0) {
 653                 usb_kill_anchored_urbs(&data->intr_anchor);
 654                 goto failed;
 655         }
 656
 657         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 658         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 659
 660 done:
 661         usb_autopm_put_interface(data->intf);
 662         return 0;
 663
 664 failed:
 665         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 666         clear_bit(HCI_RUNNING, &hdev->flags);
 667         usb_autopm_put_interface(data->intf);
 668         return err;
 669 }
 670
 671 static void btusb_stop_traffic(struct btusb_data *data)
 672 {
 673         usb_kill_anchored_urbs(&data->intr_anchor);
 674         usb_kill_anchored_urbs(&data->bulk_anchor);
 675         usb_kill_anchored_urbs(&data->isoc_anchor);
 676 }
 677
 678 static int btusb_close(struct hci_dev *hdev)
 679 {
 680         struct btusb_data *data = hci_get_drvdata(hdev);
 681         int err;
 682
 683         BT_DBG("%s", hdev->name);
 684
 685         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 686                 return 0;
 687
 688         cancel_work_sync(&data->work);
 689         cancel_work_sync(&data->waker);
 690
 691         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 692         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 693         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 694
 695         btusb_stop_traffic(data);
 696         err = usb_autopm_get_interface(data->intf);
 697         if (err < 0)
 698                 goto failed;
 699
 700         data->intf->needs_remote_wakeup = 0;
 701         usb_autopm_put_interface(data->intf);
 702
 703 failed:
 704         usb_scuttle_anchored_urbs(&data->deferred);
 705         return 0;
 706 }
 707
 708 static int btusb_flush(struct hci_dev *hdev)
 709 {
 710         struct btusb_data *data = hci_get_drvdata(hdev);
 711
 712         BT_DBG("%s", hdev->name);
 713
 714         usb_kill_anchored_urbs(&data->tx_anchor);
 715
 716         return 0;
 717 }
 718
 719 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
 720 {
 721         struct btusb_data *data = hci_get_drvdata(hdev);
 722         struct usb_ctrlrequest *dr;
 723         struct urb *urb;
 724         unsigned int pipe;
 725         int err;
 726
 727         BT_DBG("%s", hdev->name);
 728
 729         if (!test_bit(HCI_RUNNING, &hdev->flags))
 730                 return -EBUSY;
 731
 732         skb->dev = (void *) hdev;
 733
 734         switch (bt_cb(skb)->pkt_type) {
 735         case HCI_COMMAND_PKT:
 736                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 737                 if (!urb)
 738                         return -ENOMEM;
 739
 740                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
 741                 if (!dr) {
 742                         usb_free_urb(urb);
 743                         return -ENOMEM;
 744                 }
 745
 746                 dr->bRequestType = data->cmdreq_type;
 747                 dr->bRequest     = 0;
 748                 dr->wIndex       = 0;
 749                 dr->wValue       = 0;
 750                 dr->wLength      = __cpu_to_le16(skb->len);
 751
 752                 pipe = usb_sndctrlpipe(data->udev, 0x00);
 753
 754                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
 755                                 skb->data, skb->len, btusb_tx_complete, skb);
 756
 757                 hdev->stat.cmd_tx++;
 758                 break;
 759
 760         case HCI_ACLDATA_PKT:
 761                 if (!data->bulk_tx_ep)
 762                         return -ENODEV;
 763
 764                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 765                 if (!urb)
 766                         return -ENOMEM;
 767
 768                 pipe = usb_sndbulkpipe(data->udev,
 769                                         data->bulk_tx_ep->bEndpointAddress);
 770
 771                 usb_fill_bulk_urb(urb, data->udev, pipe,
 772                                 skb->data, skb->len, btusb_tx_complete, skb);
 773
 774                 hdev->stat.acl_tx++;
 775                 break;
 776
 777         case HCI_SCODATA_PKT:
 778                 if (!data->isoc_tx_ep || hci_conn_num(hdev, SCO_LINK) < 1)
 779                         return -ENODEV;
 780
 781                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
 782                 if (!urb)
 783                         return -ENOMEM;
 784
 785                 pipe = usb_sndisocpipe(data->udev,
 786                                         data->isoc_tx_ep->bEndpointAddress);
 787
 788                 usb_fill_int_urb(urb, data->udev, pipe,
 789                                 skb->data, skb->len, btusb_isoc_tx_complete,
 790                                 skb, data->isoc_tx_ep->bInterval);
 791
 792                 urb->transfer_flags  = URB_ISO_ASAP;
 793
 794                 __fill_isoc_descriptor(urb, skb->len,
 795                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 796
 797                 hdev->stat.sco_tx++;
 798                 goto skip_waking;
 799
 800         default:
 801                 return -EILSEQ;
 802         }
 803
 804         err = inc_tx(data);
 805         if (err) {
 806                 usb_anchor_urb(urb, &data->deferred);
 807                 schedule_work(&data->waker);
 808                 err = 0;
 809                 goto done;
 810         }
 811
 812 skip_waking:
 813         usb_anchor_urb(urb, &data->tx_anchor);
 814
 815         err = usb_submit_urb(urb, GFP_ATOMIC);
 816         if (err < 0) {
 817                 if (err != -EPERM && err != -ENODEV)
 818                         BT_ERR("%s urb %p submission failed (%d)",
 819                                                 hdev->name, urb, -err);
 820                 kfree(urb->setup_packet);
 821                 usb_unanchor_urb(urb);
 822         } else {
 823                 usb_mark_last_busy(data->udev);
 824         }
 825
 826 done:
 827         usb_free_urb(urb);
 828         return err;
 829 }
 830
 831 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 832 {
 833         struct btusb_data *data = hci_get_drvdata(hdev);
 834
 835         BT_DBG("%s evt %d", hdev->name, evt);
 836
 837         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
 838                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
 839                 schedule_work(&data->work);
 840         }
 841 }
 842
 843 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
 844 {
 845         struct btusb_data *data = hci_get_drvdata(hdev);
 846         struct usb_interface *intf = data->isoc;
 847         struct usb_endpoint_descriptor *ep_desc;
 848         int i, err;
 849
 850         if (!data->isoc)
 851                 return -ENODEV;
 852
 853         err = usb_set_interface(data->udev, 1, altsetting);
 854         if (err < 0) {
 855                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
 856                 return err;
 857         }
 858
 859         data->isoc_altsetting = altsetting;
 860
 861         data->isoc_tx_ep = NULL;
 862         data->isoc_rx_ep = NULL;
 863
 864         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 865                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 866
 867                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
 868                         data->isoc_tx_ep = ep_desc;
 869                         continue;
 870                 }
 871
 872                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
 873                         data->isoc_rx_ep = ep_desc;
 874                         continue;
 875                 }
 876         }
 877
 878         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
 879                 BT_ERR("%s invalid SCO descriptors", hdev->name);
 880                 return -ENODEV;
 881         }
 882
 883         return 0;
 884 }
 885
 886 static void btusb_work(struct work_struct *work)
 887 {
 888         struct btusb_data *data = container_of(work, struct btusb_data, work);
 889         struct hci_dev *hdev = data->hdev;
 890         int new_alts;
 891         int err;
 892
 893         if (data->sco_num > 0) {
 894                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
 895                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
 896                         if (err < 0) {
 897                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 898                                 usb_kill_anchored_urbs(&data->isoc_anchor);
 899                                 return;
 900                         }
 901
 902                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
 903                 }
 904
 905                 if (hdev->voice_setting & 0x0020) {
 906                         static const int alts[3] = { 2, 4, 5 };
 907                         new_alts = alts[data->sco_num - 1];
 908                 } else {
 909                         new_alts = data->sco_num;
 910                 }
 911
 912                 if (data->isoc_altsetting != new_alts) {
 913                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 914                         usb_kill_anchored_urbs(&data->isoc_anchor);
 915
 916                         if (__set_isoc_interface(hdev, new_alts) < 0)
 917                                 return;
 918                 }
 919
 920                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
 921                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
 922                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 923                         else
 924                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
 925                 }
 926         } else {
 927                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 928                 usb_kill_anchored_urbs(&data->isoc_anchor);
 929
 930                 __set_isoc_interface(hdev, 0);
 931                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
 932                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
 933         }
 934 }
 935
 936 static void btusb_waker(struct work_struct *work)
 937 {
 938         struct btusb_data *data = container_of(work, struct btusb_data, waker);
 939         int err;
 940
 941         err = usb_autopm_get_interface(data->intf);
 942         if (err < 0)
 943                 return;
 944
 945         usb_autopm_put_interface(data->intf);
 946 }
 947
 948 static int btusb_setup_bcm92035(struct hci_dev *hdev)
 949 {
 950         struct sk_buff *skb;
 951         u8 val = 0x00;
 952
 953         BT_DBG("%s", hdev->name);
 954
 955         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
 956         if (IS_ERR(skb))
 957                 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
 958         else
 959                 kfree_skb(skb);
 960
 961         return 0;
 962 }
 963
 964 struct intel_version {
 965         u8 status;
 966         u8 hw_platform;
 967         u8 hw_variant;
 968         u8 hw_revision;
 969         u8 fw_variant;
 970         u8 fw_revision;
 971         u8 fw_build_num;
 972         u8 fw_build_ww;
 973         u8 fw_build_yy;
 974         u8 fw_patch_num;
 975 } __packed;
 976
 977 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
 978                                                 struct intel_version *ver)
 979 {
 980         const struct firmware *fw;
 981         char fwname[64];
 982         int ret;
 983
 984         snprintf(fwname, sizeof(fwname),
 985                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
 986                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
 987                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
 988                  ver->fw_build_ww, ver->fw_build_yy);
 989
 990         ret = request_firmware(&fw, fwname, &hdev->dev);
 991         if (ret < 0) {
 992                 if (ret == -EINVAL) {
 993                         BT_ERR("%s Intel firmware file request failed (%d)",
 994                                hdev->name, ret);
 995                         return NULL;
 996                 }
 997
 998                 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
 999                        hdev->name, fwname, ret);
1000
1001                 /* If the correct firmware patch file is not found, use the
1002                  * default firmware patch file instead
1003                  */
1004                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1005                          ver->hw_platform, ver->hw_variant);
1006                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1007                         BT_ERR("%s failed to open default Intel fw file: %s",
1008                                hdev->name, fwname);
1009                         return NULL;
1010                 }
1011         }
1012
1013         BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1014
1015         return fw;
1016 }
1017
1018 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1019                                       const struct firmware *fw,
1020                                       const u8 **fw_ptr, int *disable_patch)
1021 {
1022         struct sk_buff *skb;
1023         struct hci_command_hdr *cmd;
1024         const u8 *cmd_param;
1025         struct hci_event_hdr *evt = NULL;
1026         const u8 *evt_param = NULL;
1027         int remain = fw->size - (*fw_ptr - fw->data);
1028
1029         /* The first byte indicates the types of the patch command or event.
1030          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1031          * in the current firmware buffer doesn't start with 0x01 or
1032          * the size of remain buffer is smaller than HCI command header,
1033          * the firmware file is corrupted and it should stop the patching
1034          * process.
1035          */
1036         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1037                 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1038                 return -EINVAL;
1039         }
1040         (*fw_ptr)++;
1041         remain--;
1042
1043         cmd = (struct hci_command_hdr *)(*fw_ptr);
1044         *fw_ptr += sizeof(*cmd);
1045         remain -= sizeof(*cmd);
1046
1047         /* Ensure that the remain firmware data is long enough than the length
1048          * of command parameter. If not, the firmware file is corrupted.
1049          */
1050         if (remain < cmd->plen) {
1051                 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1052                 return -EFAULT;
1053         }
1054
1055         /* If there is a command that loads a patch in the firmware
1056          * file, then enable the patch upon success, otherwise just
1057          * disable the manufacturer mode, for example patch activation
1058          * is not required when the default firmware patch file is used
1059          * because there are no patch data to load.
1060          */
1061         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1062                 *disable_patch = 0;
1063
1064         cmd_param = *fw_ptr;
1065         *fw_ptr += cmd->plen;
1066         remain -= cmd->plen;
1067
1068         /* This reads the expected events when the above command is sent to the
1069          * device. Some vendor commands expects more than one events, for
1070          * example command status event followed by vendor specific event.
1071          * For this case, it only keeps the last expected event. so the command
1072          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1073          * last expected event.
1074          */
1075         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1076                 (*fw_ptr)++;
1077                 remain--;
1078
1079                 evt = (struct hci_event_hdr *)(*fw_ptr);
1080                 *fw_ptr += sizeof(*evt);
1081                 remain -= sizeof(*evt);
1082
1083                 if (remain < evt->plen) {
1084                         BT_ERR("%s Intel fw corrupted: invalid evt len",
1085                                hdev->name);
1086                         return -EFAULT;
1087                 }
1088
1089                 evt_param = *fw_ptr;
1090                 *fw_ptr += evt->plen;
1091                 remain -= evt->plen;
1092         }
1093
1094         /* Every HCI commands in the firmware file has its correspond event.
1095          * If event is not found or remain is smaller than zero, the firmware
1096          * file is corrupted.
1097          */
1098         if (!evt || !evt_param || remain < 0) {
1099                 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1100                 return -EFAULT;
1101         }
1102
1103         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1104                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1105         if (IS_ERR(skb)) {
1106                 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1107                        hdev->name, cmd->opcode, PTR_ERR(skb));
1108                 return PTR_ERR(skb);
1109         }
1110
1111         /* It ensures that the returned event matches the event data read from
1112          * the firmware file. At fist, it checks the length and then
1113          * the contents of the event.
1114          */
1115         if (skb->len != evt->plen) {
1116                 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1117                        le16_to_cpu(cmd->opcode));
1118                 kfree_skb(skb);
1119                 return -EFAULT;
1120         }
1121
1122         if (memcmp(skb->data, evt_param, evt->plen)) {
1123                 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1124                        hdev->name, le16_to_cpu(cmd->opcode));
1125                 kfree_skb(skb);
1126                 return -EFAULT;
1127         }
1128         kfree_skb(skb);
1129
1130         return 0;
1131 }
1132
1133 static int btusb_setup_intel(struct hci_dev *hdev)
1134 {
1135         struct sk_buff *skb;
1136         const struct firmware *fw;
1137         const u8 *fw_ptr;
1138         int disable_patch;
1139         struct intel_version *ver;
1140
1141         const u8 mfg_enable[] = { 0x01, 0x00 };
1142         const u8 mfg_disable[] = { 0x00, 0x00 };
1143         const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
1144         const u8 mfg_reset_activate[] = { 0x00, 0x02 };
1145
1146         BT_DBG("%s", hdev->name);
1147
1148         /* The controller has a bug with the first HCI command sent to it
1149          * returning number of completed commands as zero. This would stall the
1150          * command processing in the Bluetooth core.
1151          *
1152          * As a workaround, send HCI Reset command first which will reset the
1153          * number of completed commands and allow normal command processing
1154          * from now on.
1155          */
1156         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1157         if (IS_ERR(skb)) {
1158                 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1159                        hdev->name, PTR_ERR(skb));
1160                 return PTR_ERR(skb);
1161         }
1162         kfree_skb(skb);
1163
1164         /* Read Intel specific controller version first to allow selection of
1165          * which firmware file to load.
1166          *
1167          * The returned information are hardware variant and revision plus
1168          * firmware variant, revision and build number.
1169          */
1170         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1171         if (IS_ERR(skb)) {
1172                 BT_ERR("%s reading Intel fw version command failed (%ld)",
1173                        hdev->name, PTR_ERR(skb));
1174                 return PTR_ERR(skb);
1175         }
1176
1177         if (skb->len != sizeof(*ver)) {
1178                 BT_ERR("%s Intel version event length mismatch", hdev->name);
1179                 kfree_skb(skb);
1180                 return -EIO;
1181         }
1182
1183         ver = (struct intel_version *)skb->data;
1184         if (ver->status) {
1185                 BT_ERR("%s Intel fw version event failed (%02x)", hdev->name,
1186                        ver->status);
1187                 kfree_skb(skb);
1188                 return -bt_to_errno(ver->status);
1189         }
1190
1191         BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1192                 hdev->name, ver->hw_platform, ver->hw_variant,
1193                 ver->hw_revision, ver->fw_variant,  ver->fw_revision,
1194                 ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
1195                 ver->fw_patch_num);
1196
1197         /* fw_patch_num indicates the version of patch the device currently
1198          * have. If there is no patch data in the device, it is always 0x00.
1199          * So, if it is other than 0x00, no need to patch the deivce again.
1200          */
1201         if (ver->fw_patch_num) {
1202                 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1203                         hdev->name, ver->fw_patch_num);
1204                 kfree_skb(skb);
1205                 return 0;
1206         }
1207
1208         /* Opens the firmware patch file based on the firmware version read
1209          * from the controller. If it fails to open the matching firmware
1210          * patch file, it tries to open the default firmware patch file.
1211          * If no patch file is found, allow the device to operate without
1212          * a patch.
1213          */
1214         fw = btusb_setup_intel_get_fw(hdev, ver);
1215         if (!fw) {
1216                 kfree_skb(skb);
1217                 return 0;
1218         }
1219         fw_ptr = fw->data;
1220
1221         /* This Intel specific command enables the manufacturer mode of the
1222          * controller.
1223          *
1224          * Only while this mode is enabled, the driver can download the
1225          * firmware patch data and configuration parameters.
1226          */
1227         skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
1228         if (IS_ERR(skb)) {
1229                 BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
1230                        hdev->name, PTR_ERR(skb));
1231                 release_firmware(fw);
1232                 return PTR_ERR(skb);
1233         }
1234
1235         if (skb->data[0]) {
1236                 u8 evt_status = skb->data[0];
1237                 BT_ERR("%s enable Intel manufacturer mode event failed (%02x)",
1238                        hdev->name, evt_status);
1239                 kfree_skb(skb);
1240                 release_firmware(fw);
1241                 return -bt_to_errno(evt_status);
1242         }
1243         kfree_skb(skb);
1244
1245         disable_patch = 1;
1246
1247         /* The firmware data file consists of list of Intel specific HCI
1248          * commands and its expected events. The first byte indicates the
1249          * type of the message, either HCI command or HCI event.
1250          *
1251          * It reads the command and its expected event from the firmware file,
1252          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1253          * the returned event is compared with the event read from the firmware
1254          * file and it will continue until all the messages are downloaded to
1255          * the controller.
1256          *
1257          * Once the firmware patching is completed successfully,
1258          * the manufacturer mode is disabled with reset and activating the
1259          * downloaded patch.
1260          *
1261          * If the firmware patching fails, the manufacturer mode is
1262          * disabled with reset and deactivating the patch.
1263          *
1264          * If the default patch file is used, no reset is done when disabling
1265          * the manufacturer.
1266          */
1267         while (fw->size > fw_ptr - fw->data) {
1268                 int ret;
1269
1270                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1271                                                  &disable_patch);
1272                 if (ret < 0)
1273                         goto exit_mfg_deactivate;
1274         }
1275
1276         release_firmware(fw);
1277
1278         if (disable_patch)
1279                 goto exit_mfg_disable;
1280
1281         /* Patching completed successfully and disable the manufacturer mode
1282          * with reset and activate the downloaded firmware patches.
1283          */
1284         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
1285                              mfg_reset_activate, HCI_INIT_TIMEOUT);
1286         if (IS_ERR(skb)) {
1287                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1288                        hdev->name, PTR_ERR(skb));
1289                 return PTR_ERR(skb);
1290         }
1291         kfree_skb(skb);
1292
1293         BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1294                 hdev->name);
1295
1296         return 0;
1297
1298 exit_mfg_disable:
1299         /* Disable the manufacturer mode without reset */
1300         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
1301                              HCI_INIT_TIMEOUT);
1302         if (IS_ERR(skb)) {
1303                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1304                        hdev->name, PTR_ERR(skb));
1305                 return PTR_ERR(skb);
1306         }
1307         kfree_skb(skb);
1308
1309         BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1310         return 0;
1311
1312 exit_mfg_deactivate:
1313         release_firmware(fw);
1314
1315         /* Patching failed. Disable the manufacturer mode with reset and
1316          * deactivate the downloaded firmware patches.
1317          */
1318         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
1319                              mfg_reset_deactivate, HCI_INIT_TIMEOUT);
1320         if (IS_ERR(skb)) {
1321                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1322                        hdev->name, PTR_ERR(skb));
1323                 return PTR_ERR(skb);
1324         }
1325         kfree_skb(skb);
1326
1327         BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1328                 hdev->name);
1329
1330         return 0;
1331 }
1332
1333 static int btusb_probe(struct usb_interface *intf,
1334                                 const struct usb_device_id *id)
1335 {
1336         struct usb_endpoint_descriptor *ep_desc;
1337         struct btusb_data *data;
1338         struct hci_dev *hdev;
1339         int i, err;
1340
1341         BT_DBG("intf %p id %p", intf, id);
1342
1343         /* interface numbers are hardcoded in the spec */
1344         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
1345                 return -ENODEV;
1346
1347         if (!id->driver_info) {
1348                 const struct usb_device_id *match;
1349                 match = usb_match_id(intf, blacklist_table);
1350                 if (match)
1351                         id = match;
1352         }
1353
1354         if (id->driver_info == BTUSB_IGNORE)
1355                 return -ENODEV;
1356
1357         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
1358                 return -ENODEV;
1359
1360         if (ignore_csr && id->driver_info & BTUSB_CSR)
1361                 return -ENODEV;
1362
1363         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
1364                 return -ENODEV;
1365
1366         if (id->driver_info & BTUSB_ATH3012) {
1367                 struct usb_device *udev = interface_to_usbdev(intf);
1368
1369                 /* Old firmware would otherwise let ath3k driver load
1370                  * patch and sysconfig files */
1371                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
1372                         return -ENODEV;
1373         }
1374
1375         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
1376         if (!data)
1377                 return -ENOMEM;
1378
1379         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1380                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1381
1382                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
1383                         data->intr_ep = ep_desc;
1384                         continue;
1385                 }
1386
1387                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
1388                         data->bulk_tx_ep = ep_desc;
1389                         continue;
1390                 }
1391
1392                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
1393                         data->bulk_rx_ep = ep_desc;
1394                         continue;
1395                 }
1396         }
1397
1398         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
1399                 return -ENODEV;
1400
1401         data->cmdreq_type = USB_TYPE_CLASS;
1402
1403         data->udev = interface_to_usbdev(intf);
1404         data->intf = intf;
1405
1406         spin_lock_init(&data->lock);
1407
1408         INIT_WORK(&data->work, btusb_work);
1409         INIT_WORK(&data->waker, btusb_waker);
1410         spin_lock_init(&data->txlock);
1411
1412         init_usb_anchor(&data->tx_anchor);
1413         init_usb_anchor(&data->intr_anchor);
1414         init_usb_anchor(&data->bulk_anchor);
1415         init_usb_anchor(&data->isoc_anchor);
1416         init_usb_anchor(&data->deferred);
1417
1418         hdev = hci_alloc_dev();
1419         if (!hdev)
1420                 return -ENOMEM;
1421
1422         hdev->bus = HCI_USB;
1423         hci_set_drvdata(hdev, data);
1424
1425         data->hdev = hdev;
1426
1427         SET_HCIDEV_DEV(hdev, &intf->dev);
1428
1429         hdev->open   = btusb_open;
1430         hdev->close  = btusb_close;
1431         hdev->flush  = btusb_flush;
1432         hdev->send   = btusb_send_frame;
1433         hdev->notify = btusb_notify;
1434
1435         if (id->driver_info & BTUSB_BCM92035)
1436                 hdev->setup = btusb_setup_bcm92035;
1437
1438         if (id->driver_info & BTUSB_INTEL)
1439                 hdev->setup = btusb_setup_intel;
1440
1441         /* Interface numbers are hardcoded in the specification */
1442         data->isoc = usb_ifnum_to_if(data->udev, 1);
1443
1444         if (!reset)
1445                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1446
1447         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1448                 if (!disable_scofix)
1449                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1450         }
1451
1452         if (id->driver_info & BTUSB_BROKEN_ISOC)
1453                 data->isoc = NULL;
1454
1455         if (id->driver_info & BTUSB_DIGIANSWER) {
1456                 data->cmdreq_type = USB_TYPE_VENDOR;
1457                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1458         }
1459
1460         if (id->driver_info & BTUSB_CSR) {
1461                 struct usb_device *udev = data->udev;
1462
1463                 /* Old firmware would otherwise execute USB reset */
1464                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1465                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1466         }
1467
1468         if (id->driver_info & BTUSB_SNIFFER) {
1469                 struct usb_device *udev = data->udev;
1470
1471                 /* New sniffer firmware has crippled HCI interface */
1472                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1473                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1474
1475                 data->isoc = NULL;
1476         }
1477
1478         if (data->isoc) {
1479                 err = usb_driver_claim_interface(&btusb_driver,
1480                                                         data->isoc, data);
1481                 if (err < 0) {
1482                         hci_free_dev(hdev);
1483                         return err;
1484                 }
1485         }
1486
1487         err = hci_register_dev(hdev);
1488         if (err < 0) {
1489                 hci_free_dev(hdev);
1490                 return err;
1491         }
1492
1493         usb_set_intfdata(intf, data);
1494
1495         return 0;
1496 }
1497
1498 static void btusb_disconnect(struct usb_interface *intf)
1499 {
1500         struct btusb_data *data = usb_get_intfdata(intf);
1501         struct hci_dev *hdev;
1502
1503         BT_DBG("intf %p", intf);
1504
1505         if (!data)
1506                 return;
1507
1508         hdev = data->hdev;
1509         usb_set_intfdata(data->intf, NULL);
1510
1511         if (data->isoc)
1512                 usb_set_intfdata(data->isoc, NULL);
1513
1514         hci_unregister_dev(hdev);
1515
1516         if (intf == data->isoc)
1517                 usb_driver_release_interface(&btusb_driver, data->intf);
1518         else if (data->isoc)
1519                 usb_driver_release_interface(&btusb_driver, data->isoc);
1520
1521         hci_free_dev(hdev);
1522 }
1523
1524 #ifdef CONFIG_PM
1525 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1526 {
1527         struct btusb_data *data = usb_get_intfdata(intf);
1528
1529         BT_DBG("intf %p", intf);
1530
1531         if (data->suspend_count++)
1532                 return 0;
1533
1534         spin_lock_irq(&data->txlock);
1535         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1536                 set_bit(BTUSB_SUSPENDING, &data->flags);
1537                 spin_unlock_irq(&data->txlock);
1538         } else {
1539                 spin_unlock_irq(&data->txlock);
1540                 data->suspend_count--;
1541                 return -EBUSY;
1542         }
1543
1544         cancel_work_sync(&data->work);
1545
1546         btusb_stop_traffic(data);
1547         usb_kill_anchored_urbs(&data->tx_anchor);
1548
1549         return 0;
1550 }
1551
1552 static void play_deferred(struct btusb_data *data)
1553 {
1554         struct urb *urb;
1555         int err;
1556
1557         while ((urb = usb_get_from_anchor(&data->deferred))) {
1558                 err = usb_submit_urb(urb, GFP_ATOMIC);
1559                 if (err < 0)
1560                         break;
1561
1562                 data->tx_in_flight++;
1563         }
1564         usb_scuttle_anchored_urbs(&data->deferred);
1565 }
1566
1567 static int btusb_resume(struct usb_interface *intf)
1568 {
1569         struct btusb_data *data = usb_get_intfdata(intf);
1570         struct hci_dev *hdev = data->hdev;
1571         int err = 0;
1572
1573         BT_DBG("intf %p", intf);
1574
1575         if (--data->suspend_count)
1576                 return 0;
1577
1578         if (!test_bit(HCI_RUNNING, &hdev->flags))
1579                 goto done;
1580
1581         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1582                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1583                 if (err < 0) {
1584                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1585                         goto failed;
1586                 }
1587         }
1588
1589         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1590                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1591                 if (err < 0) {
1592                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1593                         goto failed;
1594                 }
1595
1596                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1597         }
1598
1599         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1600                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1601                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1602                 else
1603                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1604         }
1605
1606         spin_lock_irq(&data->txlock);
1607         play_deferred(data);
1608         clear_bit(BTUSB_SUSPENDING, &data->flags);
1609         spin_unlock_irq(&data->txlock);
1610         schedule_work(&data->work);
1611
1612         return 0;
1613
1614 failed:
1615         usb_scuttle_anchored_urbs(&data->deferred);
1616 done:
1617         spin_lock_irq(&data->txlock);
1618         clear_bit(BTUSB_SUSPENDING, &data->flags);
1619         spin_unlock_irq(&data->txlock);
1620
1621         return err;
1622 }
1623 #endif
1624
1625 static struct usb_driver btusb_driver = {
1626         .name           = "btusb",
1627         .probe          = btusb_probe,
1628         .disconnect     = btusb_disconnect,
1629 #ifdef CONFIG_PM
1630         .suspend        = btusb_suspend,
1631         .resume         = btusb_resume,
1632 #endif
1633         .id_table       = btusb_table,
1634         .supports_autosuspend = 1,
1635         .disable_hub_initiated_lpm = 1,
1636 };
1637
1638 module_usb_driver(btusb_driver);
1639
1640 module_param(ignore_dga, bool, 0644);
1641 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1642
1643 module_param(ignore_csr, bool, 0644);
1644 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1645
1646 module_param(ignore_sniffer, bool, 0644);
1647 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1648
1649 module_param(disable_scofix, bool, 0644);
1650 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1651
1652 module_param(force_scofix, bool, 0644);
1653 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1654
1655 module_param(reset, bool, 0644);
1656 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1657
1658 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1659 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1660 MODULE_VERSION(VERSION);
1661 MODULE_LICENSE("GPL");