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