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 disable_scofix;
  34 static bool force_scofix;
  35
  36 static bool reset = 1;
  37
  38 static struct usb_driver btusb_driver;
  39
  40 #define BTUSB_IGNORE            0x01
  41 #define BTUSB_DIGIANSWER        0x02
  42 #define BTUSB_CSR               0x04
  43 #define BTUSB_SNIFFER           0x08
  44 #define BTUSB_BCM92035          0x10
  45 #define BTUSB_BROKEN_ISOC       0x20
  46 #define BTUSB_WRONG_SCO_MTU     0x40
  47 #define BTUSB_ATH3012           0x80
  48 #define BTUSB_INTEL             0x100
  49 #define BTUSB_INTEL_BOOT        0x200
  50 #define BTUSB_BCM_PATCHRAM      0x400
  51 #define BTUSB_MARVELL           0x800
  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(0x0489, 0xe042) },
 105         { USB_DEVICE(0x04ca, 0x2003) },
 106         { USB_DEVICE(0x0b05, 0x17b5) },
 107         { USB_DEVICE(0x0b05, 0x17cb) },
 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           .driver_info = BTUSB_BCM_PATCHRAM },
 116
 117         /* ASUSTek Computer - Broadcom based */
 118         { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01) },
 119
 120         /* Belkin F8065bf - Broadcom based */
 121         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01) },
 122
 123         /* IMC Networks - Broadcom based */
 124         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01) },
 125
 126         /* Intel Bluetooth USB Bootloader (RAM module) */
 127         { USB_DEVICE(0x8087, 0x0a5a),
 128           .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
 129
 130         { }     /* Terminating entry */
 131 };
 132
 133 MODULE_DEVICE_TABLE(usb, btusb_table);
 134
 135 static const struct usb_device_id blacklist_table[] = {
 136         /* CSR BlueCore devices */
 137         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 138
 139         /* Broadcom BCM2033 without firmware */
 140         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 141
 142         /* Atheros 3011 with sflash firmware */
 143         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 144         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 145         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 146         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 147         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 148         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 149
 150         /* Atheros AR9285 Malbec with sflash firmware */
 151         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 152
 153         /* Atheros 3012 with sflash firmware */
 154         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 155         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 156         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 157         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 158         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 159         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 160         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 161         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 162         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 163         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 164         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 165         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 166         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 167         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 168         { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
 169         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 170         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 171         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 172         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 173         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 174         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
 175         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 176         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 177         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 178         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 179         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 180         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 181         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 182         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 183         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 184         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 185         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
 186
 187         /* Atheros AR5BBU12 with sflash firmware */
 188         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 189
 190         /* Atheros AR5BBU12 with sflash firmware */
 191         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 192         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 193
 194         /* Broadcom BCM2035 */
 195         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 196         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 197         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 198
 199         /* Broadcom BCM2045 */
 200         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 201         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 202
 203         /* IBM/Lenovo ThinkPad with Broadcom chip */
 204         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 205         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 206
 207         /* HP laptop with Broadcom chip */
 208         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 209
 210         /* Dell laptop with Broadcom chip */
 211         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 212
 213         /* Dell Wireless 370 and 410 devices */
 214         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 215         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 216
 217         /* Belkin F8T012 and F8T013 devices */
 218         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 219         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 220
 221         /* Asus WL-BTD202 device */
 222         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 223
 224         /* Kensington Bluetooth USB adapter */
 225         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 226
 227         /* RTX Telecom based adapters with buggy SCO support */
 228         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 229         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 230
 231         /* CONWISE Technology based adapters with buggy SCO support */
 232         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 233
 234         /* Digianswer devices */
 235         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 236         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 237
 238         /* CSR BlueCore Bluetooth Sniffer */
 239         { USB_DEVICE(0x0a12, 0x0002),
 240           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 241
 242         /* Frontline ComProbe Bluetooth Sniffer */
 243         { USB_DEVICE(0x16d3, 0x0002),
 244           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 245
 246         /* Intel Bluetooth device */
 247         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 248         { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
 249
 250         /* Marvell device */
 251         { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
 252         { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
 253
 254         { }     /* Terminating entry */
 255 };
 256
 257 #define BTUSB_MAX_ISOC_FRAMES   10
 258
 259 #define BTUSB_INTR_RUNNING      0
 260 #define BTUSB_BULK_RUNNING      1
 261 #define BTUSB_ISOC_RUNNING      2
 262 #define BTUSB_SUSPENDING        3
 263 #define BTUSB_DID_ISO_RESUME    4
 264
 265 struct btusb_data {
 266         struct hci_dev       *hdev;
 267         struct usb_device    *udev;
 268         struct usb_interface *intf;
 269         struct usb_interface *isoc;
 270
 271         spinlock_t lock;
 272
 273         unsigned long flags;
 274
 275         struct work_struct work;
 276         struct work_struct waker;
 277
 278         struct usb_anchor tx_anchor;
 279         struct usb_anchor intr_anchor;
 280         struct usb_anchor bulk_anchor;
 281         struct usb_anchor isoc_anchor;
 282         struct usb_anchor deferred;
 283         int tx_in_flight;
 284         spinlock_t txlock;
 285
 286         struct usb_endpoint_descriptor *intr_ep;
 287         struct usb_endpoint_descriptor *bulk_tx_ep;
 288         struct usb_endpoint_descriptor *bulk_rx_ep;
 289         struct usb_endpoint_descriptor *isoc_tx_ep;
 290         struct usb_endpoint_descriptor *isoc_rx_ep;
 291
 292         __u8 cmdreq_type;
 293
 294         unsigned int sco_num;
 295         int isoc_altsetting;
 296         int suspend_count;
 297 };
 298
 299 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
 300 {
 301         return hci_recv_fragment(data->hdev, HCI_EVENT_PKT, buffer, count);
 302 }
 303
 304 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
 305 {
 306         return hci_recv_fragment(data->hdev, HCI_ACLDATA_PKT, buffer, count);
 307 }
 308
 309 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
 310 {
 311         return hci_recv_fragment(data->hdev, HCI_SCODATA_PKT, buffer, count);
 312 }
 313
 314 static void btusb_intr_complete(struct urb *urb)
 315 {
 316         struct hci_dev *hdev = urb->context;
 317         struct btusb_data *data = hci_get_drvdata(hdev);
 318         int err;
 319
 320         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 321                urb->actual_length);
 322
 323         if (!test_bit(HCI_RUNNING, &hdev->flags))
 324                 return;
 325
 326         if (urb->status == 0) {
 327                 hdev->stat.byte_rx += urb->actual_length;
 328
 329                 if (btusb_recv_intr(data, urb->transfer_buffer,
 330                                     urb->actual_length) < 0) {
 331                         BT_ERR("%s corrupted event packet", hdev->name);
 332                         hdev->stat.err_rx++;
 333                 }
 334         } else if (urb->status == -ENOENT) {
 335                 /* Avoid suspend failed when usb_kill_urb */
 336                 return;
 337         }
 338
 339         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 340                 return;
 341
 342         usb_mark_last_busy(data->udev);
 343         usb_anchor_urb(urb, &data->intr_anchor);
 344
 345         err = usb_submit_urb(urb, GFP_ATOMIC);
 346         if (err < 0) {
 347                 /* -EPERM: urb is being killed;
 348                  * -ENODEV: device got disconnected */
 349                 if (err != -EPERM && err != -ENODEV)
 350                         BT_ERR("%s urb %p failed to resubmit (%d)",
 351                                hdev->name, urb, -err);
 352                 usb_unanchor_urb(urb);
 353         }
 354 }
 355
 356 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 357 {
 358         struct btusb_data *data = hci_get_drvdata(hdev);
 359         struct urb *urb;
 360         unsigned char *buf;
 361         unsigned int pipe;
 362         int err, size;
 363
 364         BT_DBG("%s", hdev->name);
 365
 366         if (!data->intr_ep)
 367                 return -ENODEV;
 368
 369         urb = usb_alloc_urb(0, mem_flags);
 370         if (!urb)
 371                 return -ENOMEM;
 372
 373         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 374
 375         buf = kmalloc(size, mem_flags);
 376         if (!buf) {
 377                 usb_free_urb(urb);
 378                 return -ENOMEM;
 379         }
 380
 381         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 382
 383         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 384                          btusb_intr_complete, hdev, data->intr_ep->bInterval);
 385
 386         urb->transfer_flags |= URB_FREE_BUFFER;
 387
 388         usb_anchor_urb(urb, &data->intr_anchor);
 389
 390         err = usb_submit_urb(urb, mem_flags);
 391         if (err < 0) {
 392                 if (err != -EPERM && err != -ENODEV)
 393                         BT_ERR("%s urb %p submission failed (%d)",
 394                                hdev->name, urb, -err);
 395                 usb_unanchor_urb(urb);
 396         }
 397
 398         usb_free_urb(urb);
 399
 400         return err;
 401 }
 402
 403 static void btusb_bulk_complete(struct urb *urb)
 404 {
 405         struct hci_dev *hdev = urb->context;
 406         struct btusb_data *data = hci_get_drvdata(hdev);
 407         int err;
 408
 409         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 410                urb->actual_length);
 411
 412         if (!test_bit(HCI_RUNNING, &hdev->flags))
 413                 return;
 414
 415         if (urb->status == 0) {
 416                 hdev->stat.byte_rx += urb->actual_length;
 417
 418                 if (btusb_recv_bulk(data, urb->transfer_buffer,
 419                                     urb->actual_length) < 0) {
 420                         BT_ERR("%s corrupted ACL packet", hdev->name);
 421                         hdev->stat.err_rx++;
 422                 }
 423         } else if (urb->status == -ENOENT) {
 424                 /* Avoid suspend failed when usb_kill_urb */
 425                 return;
 426         }
 427
 428         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 429                 return;
 430
 431         usb_anchor_urb(urb, &data->bulk_anchor);
 432         usb_mark_last_busy(data->udev);
 433
 434         err = usb_submit_urb(urb, GFP_ATOMIC);
 435         if (err < 0) {
 436                 /* -EPERM: urb is being killed;
 437                  * -ENODEV: device got disconnected */
 438                 if (err != -EPERM && err != -ENODEV)
 439                         BT_ERR("%s urb %p failed to resubmit (%d)",
 440                                hdev->name, urb, -err);
 441                 usb_unanchor_urb(urb);
 442         }
 443 }
 444
 445 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 446 {
 447         struct btusb_data *data = hci_get_drvdata(hdev);
 448         struct urb *urb;
 449         unsigned char *buf;
 450         unsigned int pipe;
 451         int err, size = HCI_MAX_FRAME_SIZE;
 452
 453         BT_DBG("%s", hdev->name);
 454
 455         if (!data->bulk_rx_ep)
 456                 return -ENODEV;
 457
 458         urb = usb_alloc_urb(0, mem_flags);
 459         if (!urb)
 460                 return -ENOMEM;
 461
 462         buf = kmalloc(size, mem_flags);
 463         if (!buf) {
 464                 usb_free_urb(urb);
 465                 return -ENOMEM;
 466         }
 467
 468         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 469
 470         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
 471                           btusb_bulk_complete, hdev);
 472
 473         urb->transfer_flags |= URB_FREE_BUFFER;
 474
 475         usb_mark_last_busy(data->udev);
 476         usb_anchor_urb(urb, &data->bulk_anchor);
 477
 478         err = usb_submit_urb(urb, mem_flags);
 479         if (err < 0) {
 480                 if (err != -EPERM && err != -ENODEV)
 481                         BT_ERR("%s urb %p submission failed (%d)",
 482                                hdev->name, urb, -err);
 483                 usb_unanchor_urb(urb);
 484         }
 485
 486         usb_free_urb(urb);
 487
 488         return err;
 489 }
 490
 491 static void btusb_isoc_complete(struct urb *urb)
 492 {
 493         struct hci_dev *hdev = urb->context;
 494         struct btusb_data *data = hci_get_drvdata(hdev);
 495         int i, err;
 496
 497         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 498                urb->actual_length);
 499
 500         if (!test_bit(HCI_RUNNING, &hdev->flags))
 501                 return;
 502
 503         if (urb->status == 0) {
 504                 for (i = 0; i < urb->number_of_packets; i++) {
 505                         unsigned int offset = urb->iso_frame_desc[i].offset;
 506                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 507
 508                         if (urb->iso_frame_desc[i].status)
 509                                 continue;
 510
 511                         hdev->stat.byte_rx += length;
 512
 513                         if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
 514                                             length) < 0) {
 515                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 516                                 hdev->stat.err_rx++;
 517                         }
 518                 }
 519         } else if (urb->status == -ENOENT) {
 520                 /* Avoid suspend failed when usb_kill_urb */
 521                 return;
 522         }
 523
 524         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 525                 return;
 526
 527         usb_anchor_urb(urb, &data->isoc_anchor);
 528
 529         err = usb_submit_urb(urb, GFP_ATOMIC);
 530         if (err < 0) {
 531                 /* -EPERM: urb is being killed;
 532                  * -ENODEV: device got disconnected */
 533                 if (err != -EPERM && err != -ENODEV)
 534                         BT_ERR("%s urb %p failed to resubmit (%d)",
 535                                hdev->name, urb, -err);
 536                 usb_unanchor_urb(urb);
 537         }
 538 }
 539
 540 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 541 {
 542         int i, offset = 0;
 543
 544         BT_DBG("len %d mtu %d", len, mtu);
 545
 546         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 547                                         i++, offset += mtu, len -= mtu) {
 548                 urb->iso_frame_desc[i].offset = offset;
 549                 urb->iso_frame_desc[i].length = mtu;
 550         }
 551
 552         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 553                 urb->iso_frame_desc[i].offset = offset;
 554                 urb->iso_frame_desc[i].length = len;
 555                 i++;
 556         }
 557
 558         urb->number_of_packets = i;
 559 }
 560
 561 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 562 {
 563         struct btusb_data *data = hci_get_drvdata(hdev);
 564         struct urb *urb;
 565         unsigned char *buf;
 566         unsigned int pipe;
 567         int err, size;
 568
 569         BT_DBG("%s", hdev->name);
 570
 571         if (!data->isoc_rx_ep)
 572                 return -ENODEV;
 573
 574         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 575         if (!urb)
 576                 return -ENOMEM;
 577
 578         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 579                                                 BTUSB_MAX_ISOC_FRAMES;
 580
 581         buf = kmalloc(size, mem_flags);
 582         if (!buf) {
 583                 usb_free_urb(urb);
 584                 return -ENOMEM;
 585         }
 586
 587         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 588
 589         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 590                          hdev, data->isoc_rx_ep->bInterval);
 591
 592         urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
 593
 594         __fill_isoc_descriptor(urb, size,
 595                                le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 596
 597         usb_anchor_urb(urb, &data->isoc_anchor);
 598
 599         err = usb_submit_urb(urb, mem_flags);
 600         if (err < 0) {
 601                 if (err != -EPERM && err != -ENODEV)
 602                         BT_ERR("%s urb %p submission failed (%d)",
 603                                hdev->name, urb, -err);
 604                 usb_unanchor_urb(urb);
 605         }
 606
 607         usb_free_urb(urb);
 608
 609         return err;
 610 }
 611
 612 static void btusb_tx_complete(struct urb *urb)
 613 {
 614         struct sk_buff *skb = urb->context;
 615         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
 616         struct btusb_data *data = hci_get_drvdata(hdev);
 617
 618         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 619                urb->actual_length);
 620
 621         if (!test_bit(HCI_RUNNING, &hdev->flags))
 622                 goto done;
 623
 624         if (!urb->status)
 625                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 626         else
 627                 hdev->stat.err_tx++;
 628
 629 done:
 630         spin_lock(&data->txlock);
 631         data->tx_in_flight--;
 632         spin_unlock(&data->txlock);
 633
 634         kfree(urb->setup_packet);
 635
 636         kfree_skb(skb);
 637 }
 638
 639 static void btusb_isoc_tx_complete(struct urb *urb)
 640 {
 641         struct sk_buff *skb = urb->context;
 642         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
 643
 644         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 645                urb->actual_length);
 646
 647         if (!test_bit(HCI_RUNNING, &hdev->flags))
 648                 goto done;
 649
 650         if (!urb->status)
 651                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 652         else
 653                 hdev->stat.err_tx++;
 654
 655 done:
 656         kfree(urb->setup_packet);
 657
 658         kfree_skb(skb);
 659 }
 660
 661 static int btusb_open(struct hci_dev *hdev)
 662 {
 663         struct btusb_data *data = hci_get_drvdata(hdev);
 664         int err;
 665
 666         BT_DBG("%s", hdev->name);
 667
 668         err = usb_autopm_get_interface(data->intf);
 669         if (err < 0)
 670                 return err;
 671
 672         data->intf->needs_remote_wakeup = 1;
 673
 674         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 675                 goto done;
 676
 677         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 678                 goto done;
 679
 680         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 681         if (err < 0)
 682                 goto failed;
 683
 684         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 685         if (err < 0) {
 686                 usb_kill_anchored_urbs(&data->intr_anchor);
 687                 goto failed;
 688         }
 689
 690         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 691         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 692
 693 done:
 694         usb_autopm_put_interface(data->intf);
 695         return 0;
 696
 697 failed:
 698         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 699         clear_bit(HCI_RUNNING, &hdev->flags);
 700         usb_autopm_put_interface(data->intf);
 701         return err;
 702 }
 703
 704 static void btusb_stop_traffic(struct btusb_data *data)
 705 {
 706         usb_kill_anchored_urbs(&data->intr_anchor);
 707         usb_kill_anchored_urbs(&data->bulk_anchor);
 708         usb_kill_anchored_urbs(&data->isoc_anchor);
 709 }
 710
 711 static int btusb_close(struct hci_dev *hdev)
 712 {
 713         struct btusb_data *data = hci_get_drvdata(hdev);
 714         int err;
 715
 716         BT_DBG("%s", hdev->name);
 717
 718         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 719                 return 0;
 720
 721         cancel_work_sync(&data->work);
 722         cancel_work_sync(&data->waker);
 723
 724         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 725         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 726         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 727
 728         btusb_stop_traffic(data);
 729         err = usb_autopm_get_interface(data->intf);
 730         if (err < 0)
 731                 goto failed;
 732
 733         data->intf->needs_remote_wakeup = 0;
 734         usb_autopm_put_interface(data->intf);
 735
 736 failed:
 737         usb_scuttle_anchored_urbs(&data->deferred);
 738         return 0;
 739 }
 740
 741 static int btusb_flush(struct hci_dev *hdev)
 742 {
 743         struct btusb_data *data = hci_get_drvdata(hdev);
 744
 745         BT_DBG("%s", hdev->name);
 746
 747         usb_kill_anchored_urbs(&data->tx_anchor);
 748
 749         return 0;
 750 }
 751
 752 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
 753 {
 754         struct btusb_data *data = hci_get_drvdata(hdev);
 755         struct usb_ctrlrequest *dr;
 756         struct urb *urb;
 757         unsigned int pipe;
 758
 759         urb = usb_alloc_urb(0, GFP_KERNEL);
 760         if (!urb)
 761                 return ERR_PTR(-ENOMEM);
 762
 763         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
 764         if (!dr) {
 765                 usb_free_urb(urb);
 766                 return ERR_PTR(-ENOMEM);
 767         }
 768
 769         dr->bRequestType = data->cmdreq_type;
 770         dr->bRequest     = 0;
 771         dr->wIndex       = 0;
 772         dr->wValue       = 0;
 773         dr->wLength      = __cpu_to_le16(skb->len);
 774
 775         pipe = usb_sndctrlpipe(data->udev, 0x00);
 776
 777         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
 778                              skb->data, skb->len, btusb_tx_complete, skb);
 779
 780         skb->dev = (void *)hdev;
 781
 782         return urb;
 783 }
 784
 785 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
 786 {
 787         struct btusb_data *data = hci_get_drvdata(hdev);
 788         struct urb *urb;
 789         unsigned int pipe;
 790
 791         if (!data->bulk_tx_ep)
 792                 return ERR_PTR(-ENODEV);
 793
 794         urb = usb_alloc_urb(0, GFP_KERNEL);
 795         if (!urb)
 796                 return ERR_PTR(-ENOMEM);
 797
 798         pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
 799
 800         usb_fill_bulk_urb(urb, data->udev, pipe,
 801                           skb->data, skb->len, btusb_tx_complete, skb);
 802
 803         skb->dev = (void *)hdev;
 804
 805         return urb;
 806 }
 807
 808 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
 809 {
 810         struct btusb_data *data = hci_get_drvdata(hdev);
 811         struct urb *urb;
 812         unsigned int pipe;
 813
 814         if (!data->isoc_tx_ep)
 815                 return ERR_PTR(-ENODEV);
 816
 817         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
 818         if (!urb)
 819                 return ERR_PTR(-ENOMEM);
 820
 821         pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
 822
 823         usb_fill_int_urb(urb, data->udev, pipe,
 824                          skb->data, skb->len, btusb_isoc_tx_complete,
 825                          skb, data->isoc_tx_ep->bInterval);
 826
 827         urb->transfer_flags  = URB_ISO_ASAP;
 828
 829         __fill_isoc_descriptor(urb, skb->len,
 830                                le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 831
 832         skb->dev = (void *)hdev;
 833
 834         return urb;
 835 }
 836
 837 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
 838 {
 839         struct btusb_data *data = hci_get_drvdata(hdev);
 840         int err;
 841
 842         usb_anchor_urb(urb, &data->tx_anchor);
 843
 844         err = usb_submit_urb(urb, GFP_KERNEL);
 845         if (err < 0) {
 846                 if (err != -EPERM && err != -ENODEV)
 847                         BT_ERR("%s urb %p submission failed (%d)",
 848                                hdev->name, urb, -err);
 849                 kfree(urb->setup_packet);
 850                 usb_unanchor_urb(urb);
 851         } else {
 852                 usb_mark_last_busy(data->udev);
 853         }
 854
 855         usb_free_urb(urb);
 856         return err;
 857 }
 858
 859 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
 860 {
 861         struct btusb_data *data = hci_get_drvdata(hdev);
 862         unsigned long flags;
 863         bool suspending;
 864
 865         spin_lock_irqsave(&data->txlock, flags);
 866         suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
 867         if (!suspending)
 868                 data->tx_in_flight++;
 869         spin_unlock_irqrestore(&data->txlock, flags);
 870
 871         if (!suspending)
 872                 return submit_tx_urb(hdev, urb);
 873
 874         usb_anchor_urb(urb, &data->deferred);
 875         schedule_work(&data->waker);
 876
 877         usb_free_urb(urb);
 878         return 0;
 879 }
 880
 881 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
 882 {
 883         struct urb *urb;
 884
 885         BT_DBG("%s", hdev->name);
 886
 887         if (!test_bit(HCI_RUNNING, &hdev->flags))
 888                 return -EBUSY;
 889
 890         switch (bt_cb(skb)->pkt_type) {
 891         case HCI_COMMAND_PKT:
 892                 urb = alloc_ctrl_urb(hdev, skb);
 893                 if (IS_ERR(urb))
 894                         return PTR_ERR(urb);
 895
 896                 hdev->stat.cmd_tx++;
 897                 return submit_or_queue_tx_urb(hdev, urb);
 898
 899         case HCI_ACLDATA_PKT:
 900                 urb = alloc_bulk_urb(hdev, skb);
 901                 if (IS_ERR(urb))
 902                         return PTR_ERR(urb);
 903
 904                 hdev->stat.acl_tx++;
 905                 return submit_or_queue_tx_urb(hdev, urb);
 906
 907         case HCI_SCODATA_PKT:
 908                 if (hci_conn_num(hdev, SCO_LINK) < 1)
 909                         return -ENODEV;
 910
 911                 urb = alloc_isoc_urb(hdev, skb);
 912                 if (IS_ERR(urb))
 913                         return PTR_ERR(urb);
 914
 915                 hdev->stat.sco_tx++;
 916                 return submit_tx_urb(hdev, urb);
 917         }
 918
 919         return -EILSEQ;
 920 }
 921
 922 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 923 {
 924         struct btusb_data *data = hci_get_drvdata(hdev);
 925
 926         BT_DBG("%s evt %d", hdev->name, evt);
 927
 928         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
 929                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
 930                 schedule_work(&data->work);
 931         }
 932 }
 933
 934 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
 935 {
 936         struct btusb_data *data = hci_get_drvdata(hdev);
 937         struct usb_interface *intf = data->isoc;
 938         struct usb_endpoint_descriptor *ep_desc;
 939         int i, err;
 940
 941         if (!data->isoc)
 942                 return -ENODEV;
 943
 944         err = usb_set_interface(data->udev, 1, altsetting);
 945         if (err < 0) {
 946                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
 947                 return err;
 948         }
 949
 950         data->isoc_altsetting = altsetting;
 951
 952         data->isoc_tx_ep = NULL;
 953         data->isoc_rx_ep = NULL;
 954
 955         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 956                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 957
 958                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
 959                         data->isoc_tx_ep = ep_desc;
 960                         continue;
 961                 }
 962
 963                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
 964                         data->isoc_rx_ep = ep_desc;
 965                         continue;
 966                 }
 967         }
 968
 969         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
 970                 BT_ERR("%s invalid SCO descriptors", hdev->name);
 971                 return -ENODEV;
 972         }
 973
 974         return 0;
 975 }
 976
 977 static void btusb_work(struct work_struct *work)
 978 {
 979         struct btusb_data *data = container_of(work, struct btusb_data, work);
 980         struct hci_dev *hdev = data->hdev;
 981         int new_alts;
 982         int err;
 983
 984         if (data->sco_num > 0) {
 985                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
 986                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
 987                         if (err < 0) {
 988                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 989                                 usb_kill_anchored_urbs(&data->isoc_anchor);
 990                                 return;
 991                         }
 992
 993                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
 994                 }
 995
 996                 if (hdev->voice_setting & 0x0020) {
 997                         static const int alts[3] = { 2, 4, 5 };
 998
 999                         new_alts = alts[data->sco_num - 1];
1000                 } else {
1001                         new_alts = data->sco_num;
1002                 }
1003
1004                 if (data->isoc_altsetting != new_alts) {
1005                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1006                         usb_kill_anchored_urbs(&data->isoc_anchor);
1007
1008                         if (__set_isoc_interface(hdev, new_alts) < 0)
1009                                 return;
1010                 }
1011
1012                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1013                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1014                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1015                         else
1016                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1017                 }
1018         } else {
1019                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1020                 usb_kill_anchored_urbs(&data->isoc_anchor);
1021
1022                 __set_isoc_interface(hdev, 0);
1023                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1024                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1025         }
1026 }
1027
1028 static void btusb_waker(struct work_struct *work)
1029 {
1030         struct btusb_data *data = container_of(work, struct btusb_data, waker);
1031         int err;
1032
1033         err = usb_autopm_get_interface(data->intf);
1034         if (err < 0)
1035                 return;
1036
1037         usb_autopm_put_interface(data->intf);
1038 }
1039
1040 static int btusb_setup_bcm92035(struct hci_dev *hdev)
1041 {
1042         struct sk_buff *skb;
1043         u8 val = 0x00;
1044
1045         BT_DBG("%s", hdev->name);
1046
1047         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1048         if (IS_ERR(skb))
1049                 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
1050         else
1051                 kfree_skb(skb);
1052
1053         return 0;
1054 }
1055
1056 static int btusb_setup_csr(struct hci_dev *hdev)
1057 {
1058         struct hci_rp_read_local_version *rp;
1059         struct sk_buff *skb;
1060         int ret;
1061
1062         BT_DBG("%s", hdev->name);
1063
1064         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1065                              HCI_INIT_TIMEOUT);
1066         if (IS_ERR(skb)) {
1067                 BT_ERR("Reading local version failed (%ld)", -PTR_ERR(skb));
1068                 return -PTR_ERR(skb);
1069         }
1070
1071         rp = (struct hci_rp_read_local_version *)skb->data;
1072
1073         if (!rp->status) {
1074                 if (le16_to_cpu(rp->manufacturer) != 10) {
1075                         /* Clear the reset quirk since this is not an actual
1076                          * early Bluetooth 1.1 device from CSR.
1077                          */
1078                         clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1079
1080                         /* These fake CSR controllers have all a broken
1081                          * stored link key handling and so just disable it.
1082                          */
1083                         set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY,
1084                                 &hdev->quirks);
1085                 }
1086         }
1087
1088         ret = -bt_to_errno(rp->status);
1089
1090         kfree_skb(skb);
1091
1092         return ret;
1093 }
1094
1095 struct intel_version {
1096         u8 status;
1097         u8 hw_platform;
1098         u8 hw_variant;
1099         u8 hw_revision;
1100         u8 fw_variant;
1101         u8 fw_revision;
1102         u8 fw_build_num;
1103         u8 fw_build_ww;
1104         u8 fw_build_yy;
1105         u8 fw_patch_num;
1106 } __packed;
1107
1108 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1109                                                        struct intel_version *ver)
1110 {
1111         const struct firmware *fw;
1112         char fwname[64];
1113         int ret;
1114
1115         snprintf(fwname, sizeof(fwname),
1116                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1117                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
1118                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1119                  ver->fw_build_ww, ver->fw_build_yy);
1120
1121         ret = request_firmware(&fw, fwname, &hdev->dev);
1122         if (ret < 0) {
1123                 if (ret == -EINVAL) {
1124                         BT_ERR("%s Intel firmware file request failed (%d)",
1125                                hdev->name, ret);
1126                         return NULL;
1127                 }
1128
1129                 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1130                        hdev->name, fwname, ret);
1131
1132                 /* If the correct firmware patch file is not found, use the
1133                  * default firmware patch file instead
1134                  */
1135                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1136                          ver->hw_platform, ver->hw_variant);
1137                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1138                         BT_ERR("%s failed to open default Intel fw file: %s",
1139                                hdev->name, fwname);
1140                         return NULL;
1141                 }
1142         }
1143
1144         BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1145
1146         return fw;
1147 }
1148
1149 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1150                                       const struct firmware *fw,
1151                                       const u8 **fw_ptr, int *disable_patch)
1152 {
1153         struct sk_buff *skb;
1154         struct hci_command_hdr *cmd;
1155         const u8 *cmd_param;
1156         struct hci_event_hdr *evt = NULL;
1157         const u8 *evt_param = NULL;
1158         int remain = fw->size - (*fw_ptr - fw->data);
1159
1160         /* The first byte indicates the types of the patch command or event.
1161          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1162          * in the current firmware buffer doesn't start with 0x01 or
1163          * the size of remain buffer is smaller than HCI command header,
1164          * the firmware file is corrupted and it should stop the patching
1165          * process.
1166          */
1167         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1168                 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1169                 return -EINVAL;
1170         }
1171         (*fw_ptr)++;
1172         remain--;
1173
1174         cmd = (struct hci_command_hdr *)(*fw_ptr);
1175         *fw_ptr += sizeof(*cmd);
1176         remain -= sizeof(*cmd);
1177
1178         /* Ensure that the remain firmware data is long enough than the length
1179          * of command parameter. If not, the firmware file is corrupted.
1180          */
1181         if (remain < cmd->plen) {
1182                 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1183                 return -EFAULT;
1184         }
1185
1186         /* If there is a command that loads a patch in the firmware
1187          * file, then enable the patch upon success, otherwise just
1188          * disable the manufacturer mode, for example patch activation
1189          * is not required when the default firmware patch file is used
1190          * because there are no patch data to load.
1191          */
1192         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1193                 *disable_patch = 0;
1194
1195         cmd_param = *fw_ptr;
1196         *fw_ptr += cmd->plen;
1197         remain -= cmd->plen;
1198
1199         /* This reads the expected events when the above command is sent to the
1200          * device. Some vendor commands expects more than one events, for
1201          * example command status event followed by vendor specific event.
1202          * For this case, it only keeps the last expected event. so the command
1203          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1204          * last expected event.
1205          */
1206         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1207                 (*fw_ptr)++;
1208                 remain--;
1209
1210                 evt = (struct hci_event_hdr *)(*fw_ptr);
1211                 *fw_ptr += sizeof(*evt);
1212                 remain -= sizeof(*evt);
1213
1214                 if (remain < evt->plen) {
1215                         BT_ERR("%s Intel fw corrupted: invalid evt len",
1216                                hdev->name);
1217                         return -EFAULT;
1218                 }
1219
1220                 evt_param = *fw_ptr;
1221                 *fw_ptr += evt->plen;
1222                 remain -= evt->plen;
1223         }
1224
1225         /* Every HCI commands in the firmware file has its correspond event.
1226          * If event is not found or remain is smaller than zero, the firmware
1227          * file is corrupted.
1228          */
1229         if (!evt || !evt_param || remain < 0) {
1230                 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1231                 return -EFAULT;
1232         }
1233
1234         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1235                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1236         if (IS_ERR(skb)) {
1237                 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1238                        hdev->name, cmd->opcode, PTR_ERR(skb));
1239                 return PTR_ERR(skb);
1240         }
1241
1242         /* It ensures that the returned event matches the event data read from
1243          * the firmware file. At fist, it checks the length and then
1244          * the contents of the event.
1245          */
1246         if (skb->len != evt->plen) {
1247                 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1248                        le16_to_cpu(cmd->opcode));
1249                 kfree_skb(skb);
1250                 return -EFAULT;
1251         }
1252
1253         if (memcmp(skb->data, evt_param, evt->plen)) {
1254                 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1255                        hdev->name, le16_to_cpu(cmd->opcode));
1256                 kfree_skb(skb);
1257                 return -EFAULT;
1258         }
1259         kfree_skb(skb);
1260
1261         return 0;
1262 }
1263
1264 #define BDADDR_INTEL (&(bdaddr_t) {{0x00, 0x8b, 0x9e, 0x19, 0x03, 0x00}})
1265
1266 static int btusb_check_bdaddr_intel(struct hci_dev *hdev)
1267 {
1268         struct sk_buff *skb;
1269         struct hci_rp_read_bd_addr *rp;
1270
1271         skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
1272                              HCI_INIT_TIMEOUT);
1273         if (IS_ERR(skb)) {
1274                 BT_ERR("%s reading Intel device address failed (%ld)",
1275                        hdev->name, PTR_ERR(skb));
1276                 return PTR_ERR(skb);
1277         }
1278
1279         if (skb->len != sizeof(*rp)) {
1280                 BT_ERR("%s Intel device address length mismatch", hdev->name);
1281                 kfree_skb(skb);
1282                 return -EIO;
1283         }
1284
1285         rp = (struct hci_rp_read_bd_addr *)skb->data;
1286         if (rp->status) {
1287                 BT_ERR("%s Intel device address result failed (%02x)",
1288                        hdev->name, rp->status);
1289                 kfree_skb(skb);
1290                 return -bt_to_errno(rp->status);
1291         }
1292
1293         /* For some Intel based controllers, the default Bluetooth device
1294          * address 00:03:19:9E:8B:00 can be found. These controllers are
1295          * fully operational, but have the danger of duplicate addresses
1296          * and that in turn can cause problems with Bluetooth operation.
1297          */
1298         if (!bacmp(&rp->bdaddr, BDADDR_INTEL)) {
1299                 BT_ERR("%s found Intel default device address (%pMR)",
1300                        hdev->name, &rp->bdaddr);
1301                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
1302         }
1303
1304         kfree_skb(skb);
1305
1306         return 0;
1307 }
1308
1309 static int btusb_setup_intel(struct hci_dev *hdev)
1310 {
1311         struct sk_buff *skb;
1312         const struct firmware *fw;
1313         const u8 *fw_ptr;
1314         int disable_patch;
1315         struct intel_version *ver;
1316
1317         const u8 mfg_enable[] = { 0x01, 0x00 };
1318         const u8 mfg_disable[] = { 0x00, 0x00 };
1319         const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
1320         const u8 mfg_reset_activate[] = { 0x00, 0x02 };
1321
1322         BT_DBG("%s", hdev->name);
1323
1324         /* The controller has a bug with the first HCI command sent to it
1325          * returning number of completed commands as zero. This would stall the
1326          * command processing in the Bluetooth core.
1327          *
1328          * As a workaround, send HCI Reset command first which will reset the
1329          * number of completed commands and allow normal command processing
1330          * from now on.
1331          */
1332         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1333         if (IS_ERR(skb)) {
1334                 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1335                        hdev->name, PTR_ERR(skb));
1336                 return PTR_ERR(skb);
1337         }
1338         kfree_skb(skb);
1339
1340         /* Read Intel specific controller version first to allow selection of
1341          * which firmware file to load.
1342          *
1343          * The returned information are hardware variant and revision plus
1344          * firmware variant, revision and build number.
1345          */
1346         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1347         if (IS_ERR(skb)) {
1348                 BT_ERR("%s reading Intel fw version command failed (%ld)",
1349                        hdev->name, PTR_ERR(skb));
1350                 return PTR_ERR(skb);
1351         }
1352
1353         if (skb->len != sizeof(*ver)) {
1354                 BT_ERR("%s Intel version event length mismatch", hdev->name);
1355                 kfree_skb(skb);
1356                 return -EIO;
1357         }
1358
1359         ver = (struct intel_version *)skb->data;
1360         if (ver->status) {
1361                 BT_ERR("%s Intel fw version event failed (%02x)", hdev->name,
1362                        ver->status);
1363                 kfree_skb(skb);
1364                 return -bt_to_errno(ver->status);
1365         }
1366
1367         BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1368                 hdev->name, ver->hw_platform, ver->hw_variant,
1369                 ver->hw_revision, ver->fw_variant,  ver->fw_revision,
1370                 ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
1371                 ver->fw_patch_num);
1372
1373         /* fw_patch_num indicates the version of patch the device currently
1374          * have. If there is no patch data in the device, it is always 0x00.
1375          * So, if it is other than 0x00, no need to patch the deivce again.
1376          */
1377         if (ver->fw_patch_num) {
1378                 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1379                         hdev->name, ver->fw_patch_num);
1380                 kfree_skb(skb);
1381                 btusb_check_bdaddr_intel(hdev);
1382                 return 0;
1383         }
1384
1385         /* Opens the firmware patch file based on the firmware version read
1386          * from the controller. If it fails to open the matching firmware
1387          * patch file, it tries to open the default firmware patch file.
1388          * If no patch file is found, allow the device to operate without
1389          * a patch.
1390          */
1391         fw = btusb_setup_intel_get_fw(hdev, ver);
1392         if (!fw) {
1393                 kfree_skb(skb);
1394                 btusb_check_bdaddr_intel(hdev);
1395                 return 0;
1396         }
1397         fw_ptr = fw->data;
1398
1399         /* This Intel specific command enables the manufacturer mode of the
1400          * controller.
1401          *
1402          * Only while this mode is enabled, the driver can download the
1403          * firmware patch data and configuration parameters.
1404          */
1405         skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
1406         if (IS_ERR(skb)) {
1407                 BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
1408                        hdev->name, PTR_ERR(skb));
1409                 release_firmware(fw);
1410                 return PTR_ERR(skb);
1411         }
1412
1413         if (skb->data[0]) {
1414                 u8 evt_status = skb->data[0];
1415
1416                 BT_ERR("%s enable Intel manufacturer mode event failed (%02x)",
1417                        hdev->name, evt_status);
1418                 kfree_skb(skb);
1419                 release_firmware(fw);
1420                 return -bt_to_errno(evt_status);
1421         }
1422         kfree_skb(skb);
1423
1424         disable_patch = 1;
1425
1426         /* The firmware data file consists of list of Intel specific HCI
1427          * commands and its expected events. The first byte indicates the
1428          * type of the message, either HCI command or HCI event.
1429          *
1430          * It reads the command and its expected event from the firmware file,
1431          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1432          * the returned event is compared with the event read from the firmware
1433          * file and it will continue until all the messages are downloaded to
1434          * the controller.
1435          *
1436          * Once the firmware patching is completed successfully,
1437          * the manufacturer mode is disabled with reset and activating the
1438          * downloaded patch.
1439          *
1440          * If the firmware patching fails, the manufacturer mode is
1441          * disabled with reset and deactivating the patch.
1442          *
1443          * If the default patch file is used, no reset is done when disabling
1444          * the manufacturer.
1445          */
1446         while (fw->size > fw_ptr - fw->data) {
1447                 int ret;
1448
1449                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1450                                                  &disable_patch);
1451                 if (ret < 0)
1452                         goto exit_mfg_deactivate;
1453         }
1454
1455         release_firmware(fw);
1456
1457         if (disable_patch)
1458                 goto exit_mfg_disable;
1459
1460         /* Patching completed successfully and disable the manufacturer mode
1461          * with reset and activate the downloaded firmware patches.
1462          */
1463         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
1464                              mfg_reset_activate, HCI_INIT_TIMEOUT);
1465         if (IS_ERR(skb)) {
1466                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1467                        hdev->name, PTR_ERR(skb));
1468                 return PTR_ERR(skb);
1469         }
1470         kfree_skb(skb);
1471
1472         BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1473                 hdev->name);
1474
1475         btusb_check_bdaddr_intel(hdev);
1476         return 0;
1477
1478 exit_mfg_disable:
1479         /* Disable the manufacturer mode without reset */
1480         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
1481                              HCI_INIT_TIMEOUT);
1482         if (IS_ERR(skb)) {
1483                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1484                        hdev->name, PTR_ERR(skb));
1485                 return PTR_ERR(skb);
1486         }
1487         kfree_skb(skb);
1488
1489         BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1490
1491         btusb_check_bdaddr_intel(hdev);
1492         return 0;
1493
1494 exit_mfg_deactivate:
1495         release_firmware(fw);
1496
1497         /* Patching failed. Disable the manufacturer mode with reset and
1498          * deactivate the downloaded firmware patches.
1499          */
1500         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
1501                              mfg_reset_deactivate, HCI_INIT_TIMEOUT);
1502         if (IS_ERR(skb)) {
1503                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1504                        hdev->name, PTR_ERR(skb));
1505                 return PTR_ERR(skb);
1506         }
1507         kfree_skb(skb);
1508
1509         BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1510                 hdev->name);
1511
1512         btusb_check_bdaddr_intel(hdev);
1513         return 0;
1514 }
1515
1516 static int btusb_set_bdaddr_intel(struct hci_dev *hdev, const bdaddr_t *bdaddr)
1517 {
1518         struct sk_buff *skb;
1519         long ret;
1520
1521         skb = __hci_cmd_sync(hdev, 0xfc31, 6, bdaddr, HCI_INIT_TIMEOUT);
1522         if (IS_ERR(skb)) {
1523                 ret = PTR_ERR(skb);
1524                 BT_ERR("%s: changing Intel device address failed (%ld)",
1525                        hdev->name, ret);
1526                 return ret;
1527         }
1528         kfree_skb(skb);
1529
1530         return 0;
1531 }
1532
1533 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
1534                                     const bdaddr_t *bdaddr)
1535 {
1536         struct sk_buff *skb;
1537         u8 buf[8];
1538         long ret;
1539
1540         buf[0] = 0xfe;
1541         buf[1] = sizeof(bdaddr_t);
1542         memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
1543
1544         skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
1545         if (IS_ERR(skb)) {
1546                 ret = PTR_ERR(skb);
1547                 BT_ERR("%s: changing Marvell device address failed (%ld)",
1548                        hdev->name, ret);
1549                 return ret;
1550         }
1551         kfree_skb(skb);
1552
1553         return 0;
1554 }
1555
1556 #define BDADDR_BCM20702A0 (&(bdaddr_t) {{0x00, 0xa0, 0x02, 0x70, 0x20, 0x00}})
1557
1558 static int btusb_setup_bcm_patchram(struct hci_dev *hdev)
1559 {
1560         struct btusb_data *data = hci_get_drvdata(hdev);
1561         struct usb_device *udev = data->udev;
1562         char fw_name[64];
1563         const struct firmware *fw;
1564         const u8 *fw_ptr;
1565         size_t fw_size;
1566         const struct hci_command_hdr *cmd;
1567         const u8 *cmd_param;
1568         u16 opcode;
1569         struct sk_buff *skb;
1570         struct hci_rp_read_local_version *ver;
1571         struct hci_rp_read_bd_addr *bda;
1572         long ret;
1573
1574         snprintf(fw_name, sizeof(fw_name), "brcm/%s-%04x-%04x.hcd",
1575                  udev->product ? udev->product : "BCM",
1576                  le16_to_cpu(udev->descriptor.idVendor),
1577                  le16_to_cpu(udev->descriptor.idProduct));
1578
1579         ret = request_firmware(&fw, fw_name, &hdev->dev);
1580         if (ret < 0) {
1581                 BT_INFO("%s: BCM: patch %s not found", hdev->name, fw_name);
1582                 return 0;
1583         }
1584
1585         /* Reset */
1586         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1587         if (IS_ERR(skb)) {
1588                 ret = PTR_ERR(skb);
1589                 BT_ERR("%s: HCI_OP_RESET failed (%ld)", hdev->name, ret);
1590                 goto done;
1591         }
1592         kfree_skb(skb);
1593
1594         /* Read Local Version Info */
1595         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1596                              HCI_INIT_TIMEOUT);
1597         if (IS_ERR(skb)) {
1598                 ret = PTR_ERR(skb);
1599                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION failed (%ld)",
1600                        hdev->name, ret);
1601                 goto done;
1602         }
1603
1604         if (skb->len != sizeof(*ver)) {
1605                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION event length mismatch",
1606                        hdev->name);
1607                 kfree_skb(skb);
1608                 ret = -EIO;
1609                 goto done;
1610         }
1611
1612         ver = (struct hci_rp_read_local_version *)skb->data;
1613         BT_INFO("%s: BCM: patching hci_ver=%02x hci_rev=%04x lmp_ver=%02x "
1614                 "lmp_subver=%04x", hdev->name, ver->hci_ver, ver->hci_rev,
1615                 ver->lmp_ver, ver->lmp_subver);
1616         kfree_skb(skb);
1617
1618         /* Start Download */
1619         skb = __hci_cmd_sync(hdev, 0xfc2e, 0, NULL, HCI_INIT_TIMEOUT);
1620         if (IS_ERR(skb)) {
1621                 ret = PTR_ERR(skb);
1622                 BT_ERR("%s: BCM: Download Minidrv command failed (%ld)",
1623                        hdev->name, ret);
1624                 goto reset_fw;
1625         }
1626         kfree_skb(skb);
1627
1628         /* 50 msec delay after Download Minidrv completes */
1629         msleep(50);
1630
1631         fw_ptr = fw->data;
1632         fw_size = fw->size;
1633
1634         while (fw_size >= sizeof(*cmd)) {
1635                 cmd = (struct hci_command_hdr *)fw_ptr;
1636                 fw_ptr += sizeof(*cmd);
1637                 fw_size -= sizeof(*cmd);
1638
1639                 if (fw_size < cmd->plen) {
1640                         BT_ERR("%s: BCM: patch %s is corrupted",
1641                                hdev->name, fw_name);
1642                         ret = -EINVAL;
1643                         goto reset_fw;
1644                 }
1645
1646                 cmd_param = fw_ptr;
1647                 fw_ptr += cmd->plen;
1648                 fw_size -= cmd->plen;
1649
1650                 opcode = le16_to_cpu(cmd->opcode);
1651
1652                 skb = __hci_cmd_sync(hdev, opcode, cmd->plen, cmd_param,
1653                                      HCI_INIT_TIMEOUT);
1654                 if (IS_ERR(skb)) {
1655                         ret = PTR_ERR(skb);
1656                         BT_ERR("%s: BCM: patch command %04x failed (%ld)",
1657                                hdev->name, opcode, ret);
1658                         goto reset_fw;
1659                 }
1660                 kfree_skb(skb);
1661         }
1662
1663         /* 250 msec delay after Launch Ram completes */
1664         msleep(250);
1665
1666 reset_fw:
1667         /* Reset */
1668         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1669         if (IS_ERR(skb)) {
1670                 ret = PTR_ERR(skb);
1671                 BT_ERR("%s: HCI_OP_RESET failed (%ld)", hdev->name, ret);
1672                 goto done;
1673         }
1674         kfree_skb(skb);
1675
1676         /* Read Local Version Info */
1677         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1678                              HCI_INIT_TIMEOUT);
1679         if (IS_ERR(skb)) {
1680                 ret = PTR_ERR(skb);
1681                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION failed (%ld)",
1682                        hdev->name, ret);
1683                 goto done;
1684         }
1685
1686         if (skb->len != sizeof(*ver)) {
1687                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION event length mismatch",
1688                        hdev->name);
1689                 kfree_skb(skb);
1690                 ret = -EIO;
1691                 goto done;
1692         }
1693
1694         ver = (struct hci_rp_read_local_version *)skb->data;
1695         BT_INFO("%s: BCM: firmware hci_ver=%02x hci_rev=%04x lmp_ver=%02x "
1696                 "lmp_subver=%04x", hdev->name, ver->hci_ver, ver->hci_rev,
1697                 ver->lmp_ver, ver->lmp_subver);
1698         kfree_skb(skb);
1699
1700         /* Read BD Address */
1701         skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
1702                              HCI_INIT_TIMEOUT);
1703         if (IS_ERR(skb)) {
1704                 ret = PTR_ERR(skb);
1705                 BT_ERR("%s: HCI_OP_READ_BD_ADDR failed (%ld)",
1706                        hdev->name, ret);
1707                 goto done;
1708         }
1709
1710         if (skb->len != sizeof(*bda)) {
1711                 BT_ERR("%s: HCI_OP_READ_BD_ADDR event length mismatch",
1712                        hdev->name);
1713                 kfree_skb(skb);
1714                 ret = -EIO;
1715                 goto done;
1716         }
1717
1718         bda = (struct hci_rp_read_bd_addr *)skb->data;
1719         if (bda->status) {
1720                 BT_ERR("%s: HCI_OP_READ_BD_ADDR error status (%02x)",
1721                        hdev->name, bda->status);
1722                 kfree_skb(skb);
1723                 ret = -bt_to_errno(bda->status);
1724                 goto done;
1725         }
1726
1727         /* The address 00:20:70:02:A0:00 indicates a BCM20702A0 controller
1728          * with no configured address.
1729          */
1730         if (!bacmp(&bda->bdaddr, BDADDR_BCM20702A0)) {
1731                 BT_INFO("%s: BCM: using default device address (%pMR)",
1732                         hdev->name, &bda->bdaddr);
1733                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
1734         }
1735
1736         kfree_skb(skb);
1737
1738 done:
1739         release_firmware(fw);
1740
1741         return ret;
1742 }
1743
1744 static int btusb_set_bdaddr_bcm(struct hci_dev *hdev, const bdaddr_t *bdaddr)
1745 {
1746         struct sk_buff *skb;
1747         long ret;
1748
1749         skb = __hci_cmd_sync(hdev, 0xfc01, 6, bdaddr, HCI_INIT_TIMEOUT);
1750         if (IS_ERR(skb)) {
1751                 ret = PTR_ERR(skb);
1752                 BT_ERR("%s: BCM: Change address command failed (%ld)",
1753                        hdev->name, ret);
1754                 return ret;
1755         }
1756         kfree_skb(skb);
1757
1758         return 0;
1759 }
1760
1761 static int btusb_probe(struct usb_interface *intf,
1762                        const struct usb_device_id *id)
1763 {
1764         struct usb_endpoint_descriptor *ep_desc;
1765         struct btusb_data *data;
1766         struct hci_dev *hdev;
1767         int i, err;
1768
1769         BT_DBG("intf %p id %p", intf, id);
1770
1771         /* interface numbers are hardcoded in the spec */
1772         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
1773                 return -ENODEV;
1774
1775         if (!id->driver_info) {
1776                 const struct usb_device_id *match;
1777
1778                 match = usb_match_id(intf, blacklist_table);
1779                 if (match)
1780                         id = match;
1781         }
1782
1783         if (id->driver_info == BTUSB_IGNORE)
1784                 return -ENODEV;
1785
1786         if (id->driver_info & BTUSB_ATH3012) {
1787                 struct usb_device *udev = interface_to_usbdev(intf);
1788
1789                 /* Old firmware would otherwise let ath3k driver load
1790                  * patch and sysconfig files */
1791                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
1792                         return -ENODEV;
1793         }
1794
1795         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
1796         if (!data)
1797                 return -ENOMEM;
1798
1799         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1800                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1801
1802                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
1803                         data->intr_ep = ep_desc;
1804                         continue;
1805                 }
1806
1807                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
1808                         data->bulk_tx_ep = ep_desc;
1809                         continue;
1810                 }
1811
1812                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
1813                         data->bulk_rx_ep = ep_desc;
1814                         continue;
1815                 }
1816         }
1817
1818         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
1819                 return -ENODEV;
1820
1821         data->cmdreq_type = USB_TYPE_CLASS;
1822
1823         data->udev = interface_to_usbdev(intf);
1824         data->intf = intf;
1825
1826         spin_lock_init(&data->lock);
1827
1828         INIT_WORK(&data->work, btusb_work);
1829         INIT_WORK(&data->waker, btusb_waker);
1830         spin_lock_init(&data->txlock);
1831
1832         init_usb_anchor(&data->tx_anchor);
1833         init_usb_anchor(&data->intr_anchor);
1834         init_usb_anchor(&data->bulk_anchor);
1835         init_usb_anchor(&data->isoc_anchor);
1836         init_usb_anchor(&data->deferred);
1837
1838         hdev = hci_alloc_dev();
1839         if (!hdev)
1840                 return -ENOMEM;
1841
1842         hdev->bus = HCI_USB;
1843         hci_set_drvdata(hdev, data);
1844
1845         data->hdev = hdev;
1846
1847         SET_HCIDEV_DEV(hdev, &intf->dev);
1848
1849         hdev->open   = btusb_open;
1850         hdev->close  = btusb_close;
1851         hdev->flush  = btusb_flush;
1852         hdev->send   = btusb_send_frame;
1853         hdev->notify = btusb_notify;
1854
1855         if (id->driver_info & BTUSB_BCM92035)
1856                 hdev->setup = btusb_setup_bcm92035;
1857
1858         if (id->driver_info & BTUSB_BCM_PATCHRAM) {
1859                 hdev->setup = btusb_setup_bcm_patchram;
1860                 hdev->set_bdaddr = btusb_set_bdaddr_bcm;
1861         }
1862
1863         if (id->driver_info & BTUSB_INTEL) {
1864                 hdev->setup = btusb_setup_intel;
1865                 hdev->set_bdaddr = btusb_set_bdaddr_intel;
1866         }
1867
1868         if (id->driver_info & BTUSB_MARVELL)
1869                 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
1870
1871         if (id->driver_info & BTUSB_INTEL_BOOT)
1872                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1873
1874         /* Interface numbers are hardcoded in the specification */
1875         data->isoc = usb_ifnum_to_if(data->udev, 1);
1876
1877         if (!reset)
1878                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1879
1880         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1881                 if (!disable_scofix)
1882                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1883         }
1884
1885         if (id->driver_info & BTUSB_BROKEN_ISOC)
1886                 data->isoc = NULL;
1887
1888         if (id->driver_info & BTUSB_DIGIANSWER) {
1889                 data->cmdreq_type = USB_TYPE_VENDOR;
1890                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1891         }
1892
1893         if (id->driver_info & BTUSB_CSR) {
1894                 struct usb_device *udev = data->udev;
1895                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
1896
1897                 /* Old firmware would otherwise execute USB reset */
1898                 if (bcdDevice < 0x117)
1899                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1900
1901                 /* Fake CSR devices with broken commands */
1902                 if (bcdDevice <= 0x100)
1903                         hdev->setup = btusb_setup_csr;
1904         }
1905
1906         if (id->driver_info & BTUSB_SNIFFER) {
1907                 struct usb_device *udev = data->udev;
1908
1909                 /* New sniffer firmware has crippled HCI interface */
1910                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1911                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1912         }
1913
1914         if (id->driver_info & BTUSB_INTEL_BOOT) {
1915                 /* A bug in the bootloader causes that interrupt interface is
1916                  * only enabled after receiving SetInterface(0, AltSetting=0).
1917                  */
1918                 err = usb_set_interface(data->udev, 0, 0);
1919                 if (err < 0) {
1920                         BT_ERR("failed to set interface 0, alt 0 %d", err);
1921                         hci_free_dev(hdev);
1922                         return err;
1923                 }
1924         }
1925
1926         if (data->isoc) {
1927                 err = usb_driver_claim_interface(&btusb_driver,
1928                                                  data->isoc, data);
1929                 if (err < 0) {
1930                         hci_free_dev(hdev);
1931                         return err;
1932                 }
1933         }
1934
1935         err = hci_register_dev(hdev);
1936         if (err < 0) {
1937                 hci_free_dev(hdev);
1938                 return err;
1939         }
1940
1941         usb_set_intfdata(intf, data);
1942
1943         return 0;
1944 }
1945
1946 static void btusb_disconnect(struct usb_interface *intf)
1947 {
1948         struct btusb_data *data = usb_get_intfdata(intf);
1949         struct hci_dev *hdev;
1950
1951         BT_DBG("intf %p", intf);
1952
1953         if (!data)
1954                 return;
1955
1956         hdev = data->hdev;
1957         usb_set_intfdata(data->intf, NULL);
1958
1959         if (data->isoc)
1960                 usb_set_intfdata(data->isoc, NULL);
1961
1962         hci_unregister_dev(hdev);
1963
1964         if (intf == data->isoc)
1965                 usb_driver_release_interface(&btusb_driver, data->intf);
1966         else if (data->isoc)
1967                 usb_driver_release_interface(&btusb_driver, data->isoc);
1968
1969         hci_free_dev(hdev);
1970 }
1971
1972 #ifdef CONFIG_PM
1973 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1974 {
1975         struct btusb_data *data = usb_get_intfdata(intf);
1976
1977         BT_DBG("intf %p", intf);
1978
1979         if (data->suspend_count++)
1980                 return 0;
1981
1982         spin_lock_irq(&data->txlock);
1983         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1984                 set_bit(BTUSB_SUSPENDING, &data->flags);
1985                 spin_unlock_irq(&data->txlock);
1986         } else {
1987                 spin_unlock_irq(&data->txlock);
1988                 data->suspend_count--;
1989                 return -EBUSY;
1990         }
1991
1992         cancel_work_sync(&data->work);
1993
1994         btusb_stop_traffic(data);
1995         usb_kill_anchored_urbs(&data->tx_anchor);
1996
1997         return 0;
1998 }
1999
2000 static void play_deferred(struct btusb_data *data)
2001 {
2002         struct urb *urb;
2003         int err;
2004
2005         while ((urb = usb_get_from_anchor(&data->deferred))) {
2006                 err = usb_submit_urb(urb, GFP_ATOMIC);
2007                 if (err < 0)
2008                         break;
2009
2010                 data->tx_in_flight++;
2011         }
2012         usb_scuttle_anchored_urbs(&data->deferred);
2013 }
2014
2015 static int btusb_resume(struct usb_interface *intf)
2016 {
2017         struct btusb_data *data = usb_get_intfdata(intf);
2018         struct hci_dev *hdev = data->hdev;
2019         int err = 0;
2020
2021         BT_DBG("intf %p", intf);
2022
2023         if (--data->suspend_count)
2024                 return 0;
2025
2026         if (!test_bit(HCI_RUNNING, &hdev->flags))
2027                 goto done;
2028
2029         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
2030                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
2031                 if (err < 0) {
2032                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
2033                         goto failed;
2034                 }
2035         }
2036
2037         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
2038                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
2039                 if (err < 0) {
2040                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
2041                         goto failed;
2042                 }
2043
2044                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
2045         }
2046
2047         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
2048                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
2049                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
2050                 else
2051                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
2052         }
2053
2054         spin_lock_irq(&data->txlock);
2055         play_deferred(data);
2056         clear_bit(BTUSB_SUSPENDING, &data->flags);
2057         spin_unlock_irq(&data->txlock);
2058         schedule_work(&data->work);
2059
2060         return 0;
2061
2062 failed:
2063         usb_scuttle_anchored_urbs(&data->deferred);
2064 done:
2065         spin_lock_irq(&data->txlock);
2066         clear_bit(BTUSB_SUSPENDING, &data->flags);
2067         spin_unlock_irq(&data->txlock);
2068
2069         return err;
2070 }
2071 #endif
2072
2073 static struct usb_driver btusb_driver = {
2074         .name           = "btusb",
2075         .probe          = btusb_probe,
2076         .disconnect     = btusb_disconnect,
2077 #ifdef CONFIG_PM
2078         .suspend        = btusb_suspend,
2079         .resume         = btusb_resume,
2080 #endif
2081         .id_table       = btusb_table,
2082         .supports_autosuspend = 1,
2083         .disable_hub_initiated_lpm = 1,
2084 };
2085
2086 module_usb_driver(btusb_driver);
2087
2088 module_param(disable_scofix, bool, 0644);
2089 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
2090
2091 module_param(force_scofix, bool, 0644);
2092 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
2093
2094 module_param(reset, bool, 0644);
2095 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
2096
2097 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
2098 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
2099 MODULE_VERSION(VERSION);
2100 MODULE_LICENSE("GPL");