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 #define BTUSB_SWAVE             0x1000
  53
  54 static const struct usb_device_id btusb_table[] = {
  55         /* Generic Bluetooth USB device */
  56         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  57
  58         /* Apple-specific (Broadcom) devices */
  59         { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01) },
  60
  61         /* MediaTek MT76x0E */
  62         { USB_DEVICE(0x0e8d, 0x763f) },
  63
  64         /* Broadcom SoftSailing reporting vendor specific */
  65         { USB_DEVICE(0x0a5c, 0x21e1) },
  66
  67         /* Apple MacBookPro 7,1 */
  68         { USB_DEVICE(0x05ac, 0x8213) },
  69
  70         /* Apple iMac11,1 */
  71         { USB_DEVICE(0x05ac, 0x8215) },
  72
  73         /* Apple MacBookPro6,2 */
  74         { USB_DEVICE(0x05ac, 0x8218) },
  75
  76         /* Apple MacBookAir3,1, MacBookAir3,2 */
  77         { USB_DEVICE(0x05ac, 0x821b) },
  78
  79         /* Apple MacBookAir4,1 */
  80         { USB_DEVICE(0x05ac, 0x821f) },
  81
  82         /* Apple MacBookPro8,2 */
  83         { USB_DEVICE(0x05ac, 0x821a) },
  84
  85         /* Apple MacMini5,1 */
  86         { USB_DEVICE(0x05ac, 0x8281) },
  87
  88         /* AVM BlueFRITZ! USB v2.0 */
  89         { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE },
  90
  91         /* Bluetooth Ultraport Module from IBM */
  92         { USB_DEVICE(0x04bf, 0x030a) },
  93
  94         /* ALPS Modules with non-standard id */
  95         { USB_DEVICE(0x044e, 0x3001) },
  96         { USB_DEVICE(0x044e, 0x3002) },
  97
  98         /* Ericsson with non-standard id */
  99         { USB_DEVICE(0x0bdb, 0x1002) },
 100
 101         /* Canyon CN-BTU1 with HID interfaces */
 102         { USB_DEVICE(0x0c10, 0x0000) },
 103
 104         /* Broadcom BCM20702A0 */
 105         { USB_DEVICE(0x0489, 0xe042) },
 106         { USB_DEVICE(0x04ca, 0x2003) },
 107         { USB_DEVICE(0x0b05, 0x17b5) },
 108         { USB_DEVICE(0x0b05, 0x17cb) },
 109         { USB_DEVICE(0x413c, 0x8197) },
 110         { USB_DEVICE(0x13d3, 0x3404),
 111           .driver_info = BTUSB_BCM_PATCHRAM },
 112
 113         /* Foxconn - Hon Hai */
 114         { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01),
 115           .driver_info = BTUSB_BCM_PATCHRAM },
 116
 117         /* Broadcom devices with vendor specific id */
 118         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
 119           .driver_info = BTUSB_BCM_PATCHRAM },
 120
 121         /* ASUSTek Computer - Broadcom based */
 122         { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01) },
 123
 124         /* Belkin F8065bf - Broadcom based */
 125         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01) },
 126
 127         /* IMC Networks - Broadcom based */
 128         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01) },
 129
 130         /* Intel Bluetooth USB Bootloader (RAM module) */
 131         { USB_DEVICE(0x8087, 0x0a5a),
 132           .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
 133
 134         { }     /* Terminating entry */
 135 };
 136
 137 MODULE_DEVICE_TABLE(usb, btusb_table);
 138
 139 static const struct usb_device_id blacklist_table[] = {
 140         /* CSR BlueCore devices */
 141         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 142
 143         /* Broadcom BCM2033 without firmware */
 144         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 145
 146         /* Atheros 3011 with sflash firmware */
 147         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 148         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 149         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 150         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 151         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 152         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 153
 154         /* Atheros AR9285 Malbec with sflash firmware */
 155         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 156
 157         /* Atheros 3012 with sflash firmware */
 158         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 159         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 160         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 161         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 162         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 163         { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
 164         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 165         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 166         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 167         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 168         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 169         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 170         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 171         { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
 172         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 173         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 174         { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
 175         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 176         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 177         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 178         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 179         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 180         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
 181         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 182         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 183         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 184         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 185         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 186         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 187         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 188         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 189         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 190         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 191         { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
 192         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
 193
 194         /* Atheros AR5BBU12 with sflash firmware */
 195         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 196
 197         /* Atheros AR5BBU12 with sflash firmware */
 198         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 199         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 200
 201         /* Broadcom BCM2035 */
 202         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 203         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 204         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 205
 206         /* Broadcom BCM2045 */
 207         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 208         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 209
 210         /* IBM/Lenovo ThinkPad with Broadcom chip */
 211         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 212         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 213
 214         /* HP laptop with Broadcom chip */
 215         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 216
 217         /* Dell laptop with Broadcom chip */
 218         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 219
 220         /* Dell Wireless 370 and 410 devices */
 221         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 222         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 223
 224         /* Belkin F8T012 and F8T013 devices */
 225         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 226         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 227
 228         /* Asus WL-BTD202 device */
 229         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 230
 231         /* Kensington Bluetooth USB adapter */
 232         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 233
 234         /* RTX Telecom based adapters with buggy SCO support */
 235         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 236         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 237
 238         /* CONWISE Technology based adapters with buggy SCO support */
 239         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 240
 241         /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
 242         { USB_DEVICE(0x1300, 0x0001), .driver_info = BTUSB_SWAVE },
 243
 244         /* Digianswer devices */
 245         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 246         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 247
 248         /* CSR BlueCore Bluetooth Sniffer */
 249         { USB_DEVICE(0x0a12, 0x0002),
 250           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 251
 252         /* Frontline ComProbe Bluetooth Sniffer */
 253         { USB_DEVICE(0x16d3, 0x0002),
 254           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 255
 256         /* Intel Bluetooth device */
 257         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 258         { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
 259
 260         /* Marvell device */
 261         { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
 262         { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
 263
 264         { }     /* Terminating entry */
 265 };
 266
 267 #define BTUSB_MAX_ISOC_FRAMES   10
 268
 269 #define BTUSB_INTR_RUNNING      0
 270 #define BTUSB_BULK_RUNNING      1
 271 #define BTUSB_ISOC_RUNNING      2
 272 #define BTUSB_SUSPENDING        3
 273 #define BTUSB_DID_ISO_RESUME    4
 274
 275 struct btusb_data {
 276         struct hci_dev       *hdev;
 277         struct usb_device    *udev;
 278         struct usb_interface *intf;
 279         struct usb_interface *isoc;
 280
 281         unsigned long flags;
 282
 283         struct work_struct work;
 284         struct work_struct waker;
 285
 286         struct usb_anchor deferred;
 287         struct usb_anchor tx_anchor;
 288         int tx_in_flight;
 289         spinlock_t txlock;
 290
 291         struct usb_anchor intr_anchor;
 292         struct usb_anchor bulk_anchor;
 293         struct usb_anchor isoc_anchor;
 294         spinlock_t rxlock;
 295
 296         struct sk_buff *evt_skb;
 297         struct sk_buff *acl_skb;
 298         struct sk_buff *sco_skb;
 299
 300         struct usb_endpoint_descriptor *intr_ep;
 301         struct usb_endpoint_descriptor *bulk_tx_ep;
 302         struct usb_endpoint_descriptor *bulk_rx_ep;
 303         struct usb_endpoint_descriptor *isoc_tx_ep;
 304         struct usb_endpoint_descriptor *isoc_rx_ep;
 305
 306         __u8 cmdreq_type;
 307
 308         unsigned int sco_num;
 309         int isoc_altsetting;
 310         int suspend_count;
 311
 312         int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
 313 };
 314
 315 static inline void btusb_free_frags(struct btusb_data *data)
 316 {
 317         unsigned long flags;
 318
 319         spin_lock_irqsave(&data->rxlock, flags);
 320
 321         kfree_skb(data->evt_skb);
 322         data->evt_skb = NULL;
 323
 324         kfree_skb(data->acl_skb);
 325         data->acl_skb = NULL;
 326
 327         kfree_skb(data->sco_skb);
 328         data->sco_skb = NULL;
 329
 330         spin_unlock_irqrestore(&data->rxlock, flags);
 331 }
 332
 333 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
 334 {
 335         struct sk_buff *skb;
 336         int err = 0;
 337
 338         spin_lock(&data->rxlock);
 339         skb = data->evt_skb;
 340
 341         while (count) {
 342                 int len;
 343
 344                 if (!skb) {
 345                         skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
 346                         if (!skb) {
 347                                 err = -ENOMEM;
 348                                 break;
 349                         }
 350
 351                         bt_cb(skb)->pkt_type = HCI_EVENT_PKT;
 352                         bt_cb(skb)->expect = HCI_EVENT_HDR_SIZE;
 353                 }
 354
 355                 len = min_t(uint, bt_cb(skb)->expect, count);
 356                 memcpy(skb_put(skb, len), buffer, len);
 357
 358                 count -= len;
 359                 buffer += len;
 360                 bt_cb(skb)->expect -= len;
 361
 362                 if (skb->len == HCI_EVENT_HDR_SIZE) {
 363                         /* Complete event header */
 364                         bt_cb(skb)->expect = hci_event_hdr(skb)->plen;
 365
 366                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 367                                 kfree_skb(skb);
 368                                 skb = NULL;
 369
 370                                 err = -EILSEQ;
 371                                 break;
 372                         }
 373                 }
 374
 375                 if (bt_cb(skb)->expect == 0) {
 376                         /* Complete frame */
 377                         hci_recv_frame(data->hdev, skb);
 378                         skb = NULL;
 379                 }
 380         }
 381
 382         data->evt_skb = skb;
 383         spin_unlock(&data->rxlock);
 384
 385         return err;
 386 }
 387
 388 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
 389 {
 390         struct sk_buff *skb;
 391         int err = 0;
 392
 393         spin_lock(&data->rxlock);
 394         skb = data->acl_skb;
 395
 396         while (count) {
 397                 int len;
 398
 399                 if (!skb) {
 400                         skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
 401                         if (!skb) {
 402                                 err = -ENOMEM;
 403                                 break;
 404                         }
 405
 406                         bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT;
 407                         bt_cb(skb)->expect = HCI_ACL_HDR_SIZE;
 408                 }
 409
 410                 len = min_t(uint, bt_cb(skb)->expect, count);
 411                 memcpy(skb_put(skb, len), buffer, len);
 412
 413                 count -= len;
 414                 buffer += len;
 415                 bt_cb(skb)->expect -= len;
 416
 417                 if (skb->len == HCI_ACL_HDR_SIZE) {
 418                         __le16 dlen = hci_acl_hdr(skb)->dlen;
 419
 420                         /* Complete ACL header */
 421                         bt_cb(skb)->expect = __le16_to_cpu(dlen);
 422
 423                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 424                                 kfree_skb(skb);
 425                                 skb = NULL;
 426
 427                                 err = -EILSEQ;
 428                                 break;
 429                         }
 430                 }
 431
 432                 if (bt_cb(skb)->expect == 0) {
 433                         /* Complete frame */
 434                         hci_recv_frame(data->hdev, skb);
 435                         skb = NULL;
 436                 }
 437         }
 438
 439         data->acl_skb = skb;
 440         spin_unlock(&data->rxlock);
 441
 442         return err;
 443 }
 444
 445 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
 446 {
 447         struct sk_buff *skb;
 448         int err = 0;
 449
 450         spin_lock(&data->rxlock);
 451         skb = data->sco_skb;
 452
 453         while (count) {
 454                 int len;
 455
 456                 if (!skb) {
 457                         skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
 458                         if (!skb) {
 459                                 err = -ENOMEM;
 460                                 break;
 461                         }
 462
 463                         bt_cb(skb)->pkt_type = HCI_SCODATA_PKT;
 464                         bt_cb(skb)->expect = HCI_SCO_HDR_SIZE;
 465                 }
 466
 467                 len = min_t(uint, bt_cb(skb)->expect, count);
 468                 memcpy(skb_put(skb, len), buffer, len);
 469
 470                 count -= len;
 471                 buffer += len;
 472                 bt_cb(skb)->expect -= len;
 473
 474                 if (skb->len == HCI_SCO_HDR_SIZE) {
 475                         /* Complete SCO header */
 476                         bt_cb(skb)->expect = hci_sco_hdr(skb)->dlen;
 477
 478                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 479                                 kfree_skb(skb);
 480                                 skb = NULL;
 481
 482                                 err = -EILSEQ;
 483                                 break;
 484                         }
 485                 }
 486
 487                 if (bt_cb(skb)->expect == 0) {
 488                         /* Complete frame */
 489                         hci_recv_frame(data->hdev, skb);
 490                         skb = NULL;
 491                 }
 492         }
 493
 494         data->sco_skb = skb;
 495         spin_unlock(&data->rxlock);
 496
 497         return err;
 498 }
 499
 500 static void btusb_intr_complete(struct urb *urb)
 501 {
 502         struct hci_dev *hdev = urb->context;
 503         struct btusb_data *data = hci_get_drvdata(hdev);
 504         int err;
 505
 506         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 507                urb->actual_length);
 508
 509         if (!test_bit(HCI_RUNNING, &hdev->flags))
 510                 return;
 511
 512         if (urb->status == 0) {
 513                 hdev->stat.byte_rx += urb->actual_length;
 514
 515                 if (btusb_recv_intr(data, urb->transfer_buffer,
 516                                     urb->actual_length) < 0) {
 517                         BT_ERR("%s corrupted event packet", hdev->name);
 518                         hdev->stat.err_rx++;
 519                 }
 520         } else if (urb->status == -ENOENT) {
 521                 /* Avoid suspend failed when usb_kill_urb */
 522                 return;
 523         }
 524
 525         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 526                 return;
 527
 528         usb_mark_last_busy(data->udev);
 529         usb_anchor_urb(urb, &data->intr_anchor);
 530
 531         err = usb_submit_urb(urb, GFP_ATOMIC);
 532         if (err < 0) {
 533                 /* -EPERM: urb is being killed;
 534                  * -ENODEV: device got disconnected */
 535                 if (err != -EPERM && err != -ENODEV)
 536                         BT_ERR("%s urb %p failed to resubmit (%d)",
 537                                hdev->name, urb, -err);
 538                 usb_unanchor_urb(urb);
 539         }
 540 }
 541
 542 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 543 {
 544         struct btusb_data *data = hci_get_drvdata(hdev);
 545         struct urb *urb;
 546         unsigned char *buf;
 547         unsigned int pipe;
 548         int err, size;
 549
 550         BT_DBG("%s", hdev->name);
 551
 552         if (!data->intr_ep)
 553                 return -ENODEV;
 554
 555         urb = usb_alloc_urb(0, mem_flags);
 556         if (!urb)
 557                 return -ENOMEM;
 558
 559         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 560
 561         buf = kmalloc(size, mem_flags);
 562         if (!buf) {
 563                 usb_free_urb(urb);
 564                 return -ENOMEM;
 565         }
 566
 567         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 568
 569         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 570                          btusb_intr_complete, hdev, data->intr_ep->bInterval);
 571
 572         urb->transfer_flags |= URB_FREE_BUFFER;
 573
 574         usb_anchor_urb(urb, &data->intr_anchor);
 575
 576         err = usb_submit_urb(urb, mem_flags);
 577         if (err < 0) {
 578                 if (err != -EPERM && err != -ENODEV)
 579                         BT_ERR("%s urb %p submission failed (%d)",
 580                                hdev->name, urb, -err);
 581                 usb_unanchor_urb(urb);
 582         }
 583
 584         usb_free_urb(urb);
 585
 586         return err;
 587 }
 588
 589 static void btusb_bulk_complete(struct urb *urb)
 590 {
 591         struct hci_dev *hdev = urb->context;
 592         struct btusb_data *data = hci_get_drvdata(hdev);
 593         int err;
 594
 595         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 596                urb->actual_length);
 597
 598         if (!test_bit(HCI_RUNNING, &hdev->flags))
 599                 return;
 600
 601         if (urb->status == 0) {
 602                 hdev->stat.byte_rx += urb->actual_length;
 603
 604                 if (data->recv_bulk(data, urb->transfer_buffer,
 605                                     urb->actual_length) < 0) {
 606                         BT_ERR("%s corrupted ACL packet", hdev->name);
 607                         hdev->stat.err_rx++;
 608                 }
 609         } else if (urb->status == -ENOENT) {
 610                 /* Avoid suspend failed when usb_kill_urb */
 611                 return;
 612         }
 613
 614         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 615                 return;
 616
 617         usb_anchor_urb(urb, &data->bulk_anchor);
 618         usb_mark_last_busy(data->udev);
 619
 620         err = usb_submit_urb(urb, GFP_ATOMIC);
 621         if (err < 0) {
 622                 /* -EPERM: urb is being killed;
 623                  * -ENODEV: device got disconnected */
 624                 if (err != -EPERM && err != -ENODEV)
 625                         BT_ERR("%s urb %p failed to resubmit (%d)",
 626                                hdev->name, urb, -err);
 627                 usb_unanchor_urb(urb);
 628         }
 629 }
 630
 631 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 632 {
 633         struct btusb_data *data = hci_get_drvdata(hdev);
 634         struct urb *urb;
 635         unsigned char *buf;
 636         unsigned int pipe;
 637         int err, size = HCI_MAX_FRAME_SIZE;
 638
 639         BT_DBG("%s", hdev->name);
 640
 641         if (!data->bulk_rx_ep)
 642                 return -ENODEV;
 643
 644         urb = usb_alloc_urb(0, mem_flags);
 645         if (!urb)
 646                 return -ENOMEM;
 647
 648         buf = kmalloc(size, mem_flags);
 649         if (!buf) {
 650                 usb_free_urb(urb);
 651                 return -ENOMEM;
 652         }
 653
 654         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 655
 656         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
 657                           btusb_bulk_complete, hdev);
 658
 659         urb->transfer_flags |= URB_FREE_BUFFER;
 660
 661         usb_mark_last_busy(data->udev);
 662         usb_anchor_urb(urb, &data->bulk_anchor);
 663
 664         err = usb_submit_urb(urb, mem_flags);
 665         if (err < 0) {
 666                 if (err != -EPERM && err != -ENODEV)
 667                         BT_ERR("%s urb %p submission failed (%d)",
 668                                hdev->name, urb, -err);
 669                 usb_unanchor_urb(urb);
 670         }
 671
 672         usb_free_urb(urb);
 673
 674         return err;
 675 }
 676
 677 static void btusb_isoc_complete(struct urb *urb)
 678 {
 679         struct hci_dev *hdev = urb->context;
 680         struct btusb_data *data = hci_get_drvdata(hdev);
 681         int i, err;
 682
 683         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 684                urb->actual_length);
 685
 686         if (!test_bit(HCI_RUNNING, &hdev->flags))
 687                 return;
 688
 689         if (urb->status == 0) {
 690                 for (i = 0; i < urb->number_of_packets; i++) {
 691                         unsigned int offset = urb->iso_frame_desc[i].offset;
 692                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 693
 694                         if (urb->iso_frame_desc[i].status)
 695                                 continue;
 696
 697                         hdev->stat.byte_rx += length;
 698
 699                         if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
 700                                             length) < 0) {
 701                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 702                                 hdev->stat.err_rx++;
 703                         }
 704                 }
 705         } else if (urb->status == -ENOENT) {
 706                 /* Avoid suspend failed when usb_kill_urb */
 707                 return;
 708         }
 709
 710         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 711                 return;
 712
 713         usb_anchor_urb(urb, &data->isoc_anchor);
 714
 715         err = usb_submit_urb(urb, GFP_ATOMIC);
 716         if (err < 0) {
 717                 /* -EPERM: urb is being killed;
 718                  * -ENODEV: device got disconnected */
 719                 if (err != -EPERM && err != -ENODEV)
 720                         BT_ERR("%s urb %p failed to resubmit (%d)",
 721                                hdev->name, urb, -err);
 722                 usb_unanchor_urb(urb);
 723         }
 724 }
 725
 726 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 727 {
 728         int i, offset = 0;
 729
 730         BT_DBG("len %d mtu %d", len, mtu);
 731
 732         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 733                                         i++, offset += mtu, len -= mtu) {
 734                 urb->iso_frame_desc[i].offset = offset;
 735                 urb->iso_frame_desc[i].length = mtu;
 736         }
 737
 738         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 739                 urb->iso_frame_desc[i].offset = offset;
 740                 urb->iso_frame_desc[i].length = len;
 741                 i++;
 742         }
 743
 744         urb->number_of_packets = i;
 745 }
 746
 747 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 748 {
 749         struct btusb_data *data = hci_get_drvdata(hdev);
 750         struct urb *urb;
 751         unsigned char *buf;
 752         unsigned int pipe;
 753         int err, size;
 754
 755         BT_DBG("%s", hdev->name);
 756
 757         if (!data->isoc_rx_ep)
 758                 return -ENODEV;
 759
 760         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 761         if (!urb)
 762                 return -ENOMEM;
 763
 764         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 765                                                 BTUSB_MAX_ISOC_FRAMES;
 766
 767         buf = kmalloc(size, mem_flags);
 768         if (!buf) {
 769                 usb_free_urb(urb);
 770                 return -ENOMEM;
 771         }
 772
 773         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 774
 775         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 776                          hdev, data->isoc_rx_ep->bInterval);
 777
 778         urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
 779
 780         __fill_isoc_descriptor(urb, size,
 781                                le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 782
 783         usb_anchor_urb(urb, &data->isoc_anchor);
 784
 785         err = usb_submit_urb(urb, mem_flags);
 786         if (err < 0) {
 787                 if (err != -EPERM && err != -ENODEV)
 788                         BT_ERR("%s urb %p submission failed (%d)",
 789                                hdev->name, urb, -err);
 790                 usb_unanchor_urb(urb);
 791         }
 792
 793         usb_free_urb(urb);
 794
 795         return err;
 796 }
 797
 798 static void btusb_tx_complete(struct urb *urb)
 799 {
 800         struct sk_buff *skb = urb->context;
 801         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
 802         struct btusb_data *data = hci_get_drvdata(hdev);
 803
 804         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 805                urb->actual_length);
 806
 807         if (!test_bit(HCI_RUNNING, &hdev->flags))
 808                 goto done;
 809
 810         if (!urb->status)
 811                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 812         else
 813                 hdev->stat.err_tx++;
 814
 815 done:
 816         spin_lock(&data->txlock);
 817         data->tx_in_flight--;
 818         spin_unlock(&data->txlock);
 819
 820         kfree(urb->setup_packet);
 821
 822         kfree_skb(skb);
 823 }
 824
 825 static void btusb_isoc_tx_complete(struct urb *urb)
 826 {
 827         struct sk_buff *skb = urb->context;
 828         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
 829
 830         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 831                urb->actual_length);
 832
 833         if (!test_bit(HCI_RUNNING, &hdev->flags))
 834                 goto done;
 835
 836         if (!urb->status)
 837                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 838         else
 839                 hdev->stat.err_tx++;
 840
 841 done:
 842         kfree(urb->setup_packet);
 843
 844         kfree_skb(skb);
 845 }
 846
 847 static int btusb_open(struct hci_dev *hdev)
 848 {
 849         struct btusb_data *data = hci_get_drvdata(hdev);
 850         int err;
 851
 852         BT_DBG("%s", hdev->name);
 853
 854         err = usb_autopm_get_interface(data->intf);
 855         if (err < 0)
 856                 return err;
 857
 858         data->intf->needs_remote_wakeup = 1;
 859
 860         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 861                 goto done;
 862
 863         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 864                 goto done;
 865
 866         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 867         if (err < 0)
 868                 goto failed;
 869
 870         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 871         if (err < 0) {
 872                 usb_kill_anchored_urbs(&data->intr_anchor);
 873                 goto failed;
 874         }
 875
 876         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 877         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 878
 879 done:
 880         usb_autopm_put_interface(data->intf);
 881         return 0;
 882
 883 failed:
 884         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 885         clear_bit(HCI_RUNNING, &hdev->flags);
 886         usb_autopm_put_interface(data->intf);
 887         return err;
 888 }
 889
 890 static void btusb_stop_traffic(struct btusb_data *data)
 891 {
 892         usb_kill_anchored_urbs(&data->intr_anchor);
 893         usb_kill_anchored_urbs(&data->bulk_anchor);
 894         usb_kill_anchored_urbs(&data->isoc_anchor);
 895 }
 896
 897 static int btusb_close(struct hci_dev *hdev)
 898 {
 899         struct btusb_data *data = hci_get_drvdata(hdev);
 900         int err;
 901
 902         BT_DBG("%s", hdev->name);
 903
 904         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 905                 return 0;
 906
 907         cancel_work_sync(&data->work);
 908         cancel_work_sync(&data->waker);
 909
 910         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 911         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 912         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 913
 914         btusb_stop_traffic(data);
 915         btusb_free_frags(data);
 916
 917         err = usb_autopm_get_interface(data->intf);
 918         if (err < 0)
 919                 goto failed;
 920
 921         data->intf->needs_remote_wakeup = 0;
 922         usb_autopm_put_interface(data->intf);
 923
 924 failed:
 925         usb_scuttle_anchored_urbs(&data->deferred);
 926         return 0;
 927 }
 928
 929 static int btusb_flush(struct hci_dev *hdev)
 930 {
 931         struct btusb_data *data = hci_get_drvdata(hdev);
 932
 933         BT_DBG("%s", hdev->name);
 934
 935         usb_kill_anchored_urbs(&data->tx_anchor);
 936         btusb_free_frags(data);
 937
 938         return 0;
 939 }
 940
 941 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
 942 {
 943         struct btusb_data *data = hci_get_drvdata(hdev);
 944         struct usb_ctrlrequest *dr;
 945         struct urb *urb;
 946         unsigned int pipe;
 947
 948         urb = usb_alloc_urb(0, GFP_KERNEL);
 949         if (!urb)
 950                 return ERR_PTR(-ENOMEM);
 951
 952         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
 953         if (!dr) {
 954                 usb_free_urb(urb);
 955                 return ERR_PTR(-ENOMEM);
 956         }
 957
 958         dr->bRequestType = data->cmdreq_type;
 959         dr->bRequest     = 0;
 960         dr->wIndex       = 0;
 961         dr->wValue       = 0;
 962         dr->wLength      = __cpu_to_le16(skb->len);
 963
 964         pipe = usb_sndctrlpipe(data->udev, 0x00);
 965
 966         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
 967                              skb->data, skb->len, btusb_tx_complete, skb);
 968
 969         skb->dev = (void *)hdev;
 970
 971         return urb;
 972 }
 973
 974 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
 975 {
 976         struct btusb_data *data = hci_get_drvdata(hdev);
 977         struct urb *urb;
 978         unsigned int pipe;
 979
 980         if (!data->bulk_tx_ep)
 981                 return ERR_PTR(-ENODEV);
 982
 983         urb = usb_alloc_urb(0, GFP_KERNEL);
 984         if (!urb)
 985                 return ERR_PTR(-ENOMEM);
 986
 987         pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
 988
 989         usb_fill_bulk_urb(urb, data->udev, pipe,
 990                           skb->data, skb->len, btusb_tx_complete, skb);
 991
 992         skb->dev = (void *)hdev;
 993
 994         return urb;
 995 }
 996
 997 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
 998 {
 999         struct btusb_data *data = hci_get_drvdata(hdev);
1000         struct urb *urb;
1001         unsigned int pipe;
1002
1003         if (!data->isoc_tx_ep)
1004                 return ERR_PTR(-ENODEV);
1005
1006         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1007         if (!urb)
1008                 return ERR_PTR(-ENOMEM);
1009
1010         pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1011
1012         usb_fill_int_urb(urb, data->udev, pipe,
1013                          skb->data, skb->len, btusb_isoc_tx_complete,
1014                          skb, data->isoc_tx_ep->bInterval);
1015
1016         urb->transfer_flags  = URB_ISO_ASAP;
1017
1018         __fill_isoc_descriptor(urb, skb->len,
1019                                le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1020
1021         skb->dev = (void *)hdev;
1022
1023         return urb;
1024 }
1025
1026 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1027 {
1028         struct btusb_data *data = hci_get_drvdata(hdev);
1029         int err;
1030
1031         usb_anchor_urb(urb, &data->tx_anchor);
1032
1033         err = usb_submit_urb(urb, GFP_KERNEL);
1034         if (err < 0) {
1035                 if (err != -EPERM && err != -ENODEV)
1036                         BT_ERR("%s urb %p submission failed (%d)",
1037                                hdev->name, urb, -err);
1038                 kfree(urb->setup_packet);
1039                 usb_unanchor_urb(urb);
1040         } else {
1041                 usb_mark_last_busy(data->udev);
1042         }
1043
1044         usb_free_urb(urb);
1045         return err;
1046 }
1047
1048 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1049 {
1050         struct btusb_data *data = hci_get_drvdata(hdev);
1051         unsigned long flags;
1052         bool suspending;
1053
1054         spin_lock_irqsave(&data->txlock, flags);
1055         suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1056         if (!suspending)
1057                 data->tx_in_flight++;
1058         spin_unlock_irqrestore(&data->txlock, flags);
1059
1060         if (!suspending)
1061                 return submit_tx_urb(hdev, urb);
1062
1063         usb_anchor_urb(urb, &data->deferred);
1064         schedule_work(&data->waker);
1065
1066         usb_free_urb(urb);
1067         return 0;
1068 }
1069
1070 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1071 {
1072         struct urb *urb;
1073
1074         BT_DBG("%s", hdev->name);
1075
1076         if (!test_bit(HCI_RUNNING, &hdev->flags))
1077                 return -EBUSY;
1078
1079         switch (bt_cb(skb)->pkt_type) {
1080         case HCI_COMMAND_PKT:
1081                 urb = alloc_ctrl_urb(hdev, skb);
1082                 if (IS_ERR(urb))
1083                         return PTR_ERR(urb);
1084
1085                 hdev->stat.cmd_tx++;
1086                 return submit_or_queue_tx_urb(hdev, urb);
1087
1088         case HCI_ACLDATA_PKT:
1089                 urb = alloc_bulk_urb(hdev, skb);
1090                 if (IS_ERR(urb))
1091                         return PTR_ERR(urb);
1092
1093                 hdev->stat.acl_tx++;
1094                 return submit_or_queue_tx_urb(hdev, urb);
1095
1096         case HCI_SCODATA_PKT:
1097                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1098                         return -ENODEV;
1099
1100                 urb = alloc_isoc_urb(hdev, skb);
1101                 if (IS_ERR(urb))
1102                         return PTR_ERR(urb);
1103
1104                 hdev->stat.sco_tx++;
1105                 return submit_tx_urb(hdev, urb);
1106         }
1107
1108         return -EILSEQ;
1109 }
1110
1111 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1112 {
1113         struct btusb_data *data = hci_get_drvdata(hdev);
1114
1115         BT_DBG("%s evt %d", hdev->name, evt);
1116
1117         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1118                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1119                 schedule_work(&data->work);
1120         }
1121 }
1122
1123 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1124 {
1125         struct btusb_data *data = hci_get_drvdata(hdev);
1126         struct usb_interface *intf = data->isoc;
1127         struct usb_endpoint_descriptor *ep_desc;
1128         int i, err;
1129
1130         if (!data->isoc)
1131                 return -ENODEV;
1132
1133         err = usb_set_interface(data->udev, 1, altsetting);
1134         if (err < 0) {
1135                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
1136                 return err;
1137         }
1138
1139         data->isoc_altsetting = altsetting;
1140
1141         data->isoc_tx_ep = NULL;
1142         data->isoc_rx_ep = NULL;
1143
1144         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1145                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1146
1147                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1148                         data->isoc_tx_ep = ep_desc;
1149                         continue;
1150                 }
1151
1152                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1153                         data->isoc_rx_ep = ep_desc;
1154                         continue;
1155                 }
1156         }
1157
1158         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1159                 BT_ERR("%s invalid SCO descriptors", hdev->name);
1160                 return -ENODEV;
1161         }
1162
1163         return 0;
1164 }
1165
1166 static void btusb_work(struct work_struct *work)
1167 {
1168         struct btusb_data *data = container_of(work, struct btusb_data, work);
1169         struct hci_dev *hdev = data->hdev;
1170         int new_alts;
1171         int err;
1172
1173         if (data->sco_num > 0) {
1174                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1175                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1176                         if (err < 0) {
1177                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1178                                 usb_kill_anchored_urbs(&data->isoc_anchor);
1179                                 return;
1180                         }
1181
1182                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1183                 }
1184
1185                 if (hdev->voice_setting & 0x0020) {
1186                         static const int alts[3] = { 2, 4, 5 };
1187
1188                         new_alts = alts[data->sco_num - 1];
1189                 } else {
1190                         new_alts = data->sco_num;
1191                 }
1192
1193                 if (data->isoc_altsetting != new_alts) {
1194                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1195                         usb_kill_anchored_urbs(&data->isoc_anchor);
1196
1197                         if (__set_isoc_interface(hdev, new_alts) < 0)
1198                                 return;
1199                 }
1200
1201                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1202                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1203                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1204                         else
1205                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1206                 }
1207         } else {
1208                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1209                 usb_kill_anchored_urbs(&data->isoc_anchor);
1210
1211                 __set_isoc_interface(hdev, 0);
1212                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1213                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1214         }
1215 }
1216
1217 static void btusb_waker(struct work_struct *work)
1218 {
1219         struct btusb_data *data = container_of(work, struct btusb_data, waker);
1220         int err;
1221
1222         err = usb_autopm_get_interface(data->intf);
1223         if (err < 0)
1224                 return;
1225
1226         usb_autopm_put_interface(data->intf);
1227 }
1228
1229 static int btusb_setup_bcm92035(struct hci_dev *hdev)
1230 {
1231         struct sk_buff *skb;
1232         u8 val = 0x00;
1233
1234         BT_DBG("%s", hdev->name);
1235
1236         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1237         if (IS_ERR(skb))
1238                 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
1239         else
1240                 kfree_skb(skb);
1241
1242         return 0;
1243 }
1244
1245 static int btusb_setup_csr(struct hci_dev *hdev)
1246 {
1247         struct hci_rp_read_local_version *rp;
1248         struct sk_buff *skb;
1249         int ret;
1250
1251         BT_DBG("%s", hdev->name);
1252
1253         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1254                              HCI_INIT_TIMEOUT);
1255         if (IS_ERR(skb)) {
1256                 BT_ERR("Reading local version failed (%ld)", -PTR_ERR(skb));
1257                 return -PTR_ERR(skb);
1258         }
1259
1260         rp = (struct hci_rp_read_local_version *)skb->data;
1261
1262         if (!rp->status) {
1263                 if (le16_to_cpu(rp->manufacturer) != 10) {
1264                         /* Clear the reset quirk since this is not an actual
1265                          * early Bluetooth 1.1 device from CSR.
1266                          */
1267                         clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1268
1269                         /* These fake CSR controllers have all a broken
1270                          * stored link key handling and so just disable it.
1271                          */
1272                         set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY,
1273                                 &hdev->quirks);
1274                 }
1275         }
1276
1277         ret = -bt_to_errno(rp->status);
1278
1279         kfree_skb(skb);
1280
1281         return ret;
1282 }
1283
1284 struct intel_version {
1285         u8 status;
1286         u8 hw_platform;
1287         u8 hw_variant;
1288         u8 hw_revision;
1289         u8 fw_variant;
1290         u8 fw_revision;
1291         u8 fw_build_num;
1292         u8 fw_build_ww;
1293         u8 fw_build_yy;
1294         u8 fw_patch_num;
1295 } __packed;
1296
1297 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1298                                                        struct intel_version *ver)
1299 {
1300         const struct firmware *fw;
1301         char fwname[64];
1302         int ret;
1303
1304         snprintf(fwname, sizeof(fwname),
1305                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1306                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
1307                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1308                  ver->fw_build_ww, ver->fw_build_yy);
1309
1310         ret = request_firmware(&fw, fwname, &hdev->dev);
1311         if (ret < 0) {
1312                 if (ret == -EINVAL) {
1313                         BT_ERR("%s Intel firmware file request failed (%d)",
1314                                hdev->name, ret);
1315                         return NULL;
1316                 }
1317
1318                 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1319                        hdev->name, fwname, ret);
1320
1321                 /* If the correct firmware patch file is not found, use the
1322                  * default firmware patch file instead
1323                  */
1324                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1325                          ver->hw_platform, ver->hw_variant);
1326                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1327                         BT_ERR("%s failed to open default Intel fw file: %s",
1328                                hdev->name, fwname);
1329                         return NULL;
1330                 }
1331         }
1332
1333         BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1334
1335         return fw;
1336 }
1337
1338 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1339                                       const struct firmware *fw,
1340                                       const u8 **fw_ptr, int *disable_patch)
1341 {
1342         struct sk_buff *skb;
1343         struct hci_command_hdr *cmd;
1344         const u8 *cmd_param;
1345         struct hci_event_hdr *evt = NULL;
1346         const u8 *evt_param = NULL;
1347         int remain = fw->size - (*fw_ptr - fw->data);
1348
1349         /* The first byte indicates the types of the patch command or event.
1350          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1351          * in the current firmware buffer doesn't start with 0x01 or
1352          * the size of remain buffer is smaller than HCI command header,
1353          * the firmware file is corrupted and it should stop the patching
1354          * process.
1355          */
1356         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1357                 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1358                 return -EINVAL;
1359         }
1360         (*fw_ptr)++;
1361         remain--;
1362
1363         cmd = (struct hci_command_hdr *)(*fw_ptr);
1364         *fw_ptr += sizeof(*cmd);
1365         remain -= sizeof(*cmd);
1366
1367         /* Ensure that the remain firmware data is long enough than the length
1368          * of command parameter. If not, the firmware file is corrupted.
1369          */
1370         if (remain < cmd->plen) {
1371                 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1372                 return -EFAULT;
1373         }
1374
1375         /* If there is a command that loads a patch in the firmware
1376          * file, then enable the patch upon success, otherwise just
1377          * disable the manufacturer mode, for example patch activation
1378          * is not required when the default firmware patch file is used
1379          * because there are no patch data to load.
1380          */
1381         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1382                 *disable_patch = 0;
1383
1384         cmd_param = *fw_ptr;
1385         *fw_ptr += cmd->plen;
1386         remain -= cmd->plen;
1387
1388         /* This reads the expected events when the above command is sent to the
1389          * device. Some vendor commands expects more than one events, for
1390          * example command status event followed by vendor specific event.
1391          * For this case, it only keeps the last expected event. so the command
1392          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1393          * last expected event.
1394          */
1395         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1396                 (*fw_ptr)++;
1397                 remain--;
1398
1399                 evt = (struct hci_event_hdr *)(*fw_ptr);
1400                 *fw_ptr += sizeof(*evt);
1401                 remain -= sizeof(*evt);
1402
1403                 if (remain < evt->plen) {
1404                         BT_ERR("%s Intel fw corrupted: invalid evt len",
1405                                hdev->name);
1406                         return -EFAULT;
1407                 }
1408
1409                 evt_param = *fw_ptr;
1410                 *fw_ptr += evt->plen;
1411                 remain -= evt->plen;
1412         }
1413
1414         /* Every HCI commands in the firmware file has its correspond event.
1415          * If event is not found or remain is smaller than zero, the firmware
1416          * file is corrupted.
1417          */
1418         if (!evt || !evt_param || remain < 0) {
1419                 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1420                 return -EFAULT;
1421         }
1422
1423         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1424                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1425         if (IS_ERR(skb)) {
1426                 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1427                        hdev->name, cmd->opcode, PTR_ERR(skb));
1428                 return PTR_ERR(skb);
1429         }
1430
1431         /* It ensures that the returned event matches the event data read from
1432          * the firmware file. At fist, it checks the length and then
1433          * the contents of the event.
1434          */
1435         if (skb->len != evt->plen) {
1436                 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1437                        le16_to_cpu(cmd->opcode));
1438                 kfree_skb(skb);
1439                 return -EFAULT;
1440         }
1441
1442         if (memcmp(skb->data, evt_param, evt->plen)) {
1443                 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1444                        hdev->name, le16_to_cpu(cmd->opcode));
1445                 kfree_skb(skb);
1446                 return -EFAULT;
1447         }
1448         kfree_skb(skb);
1449
1450         return 0;
1451 }
1452
1453 #define BDADDR_INTEL (&(bdaddr_t) {{0x00, 0x8b, 0x9e, 0x19, 0x03, 0x00}})
1454
1455 static int btusb_check_bdaddr_intel(struct hci_dev *hdev)
1456 {
1457         struct sk_buff *skb;
1458         struct hci_rp_read_bd_addr *rp;
1459
1460         skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
1461                              HCI_INIT_TIMEOUT);
1462         if (IS_ERR(skb)) {
1463                 BT_ERR("%s reading Intel device address failed (%ld)",
1464                        hdev->name, PTR_ERR(skb));
1465                 return PTR_ERR(skb);
1466         }
1467
1468         if (skb->len != sizeof(*rp)) {
1469                 BT_ERR("%s Intel device address length mismatch", hdev->name);
1470                 kfree_skb(skb);
1471                 return -EIO;
1472         }
1473
1474         rp = (struct hci_rp_read_bd_addr *)skb->data;
1475         if (rp->status) {
1476                 BT_ERR("%s Intel device address result failed (%02x)",
1477                        hdev->name, rp->status);
1478                 kfree_skb(skb);
1479                 return -bt_to_errno(rp->status);
1480         }
1481
1482         /* For some Intel based controllers, the default Bluetooth device
1483          * address 00:03:19:9E:8B:00 can be found. These controllers are
1484          * fully operational, but have the danger of duplicate addresses
1485          * and that in turn can cause problems with Bluetooth operation.
1486          */
1487         if (!bacmp(&rp->bdaddr, BDADDR_INTEL)) {
1488                 BT_ERR("%s found Intel default device address (%pMR)",
1489                        hdev->name, &rp->bdaddr);
1490                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
1491         }
1492
1493         kfree_skb(skb);
1494
1495         return 0;
1496 }
1497
1498 static int btusb_setup_intel(struct hci_dev *hdev)
1499 {
1500         struct sk_buff *skb;
1501         const struct firmware *fw;
1502         const u8 *fw_ptr;
1503         int disable_patch;
1504         struct intel_version *ver;
1505
1506         const u8 mfg_enable[] = { 0x01, 0x00 };
1507         const u8 mfg_disable[] = { 0x00, 0x00 };
1508         const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
1509         const u8 mfg_reset_activate[] = { 0x00, 0x02 };
1510
1511         BT_DBG("%s", hdev->name);
1512
1513         /* The controller has a bug with the first HCI command sent to it
1514          * returning number of completed commands as zero. This would stall the
1515          * command processing in the Bluetooth core.
1516          *
1517          * As a workaround, send HCI Reset command first which will reset the
1518          * number of completed commands and allow normal command processing
1519          * from now on.
1520          */
1521         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1522         if (IS_ERR(skb)) {
1523                 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1524                        hdev->name, PTR_ERR(skb));
1525                 return PTR_ERR(skb);
1526         }
1527         kfree_skb(skb);
1528
1529         /* Read Intel specific controller version first to allow selection of
1530          * which firmware file to load.
1531          *
1532          * The returned information are hardware variant and revision plus
1533          * firmware variant, revision and build number.
1534          */
1535         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1536         if (IS_ERR(skb)) {
1537                 BT_ERR("%s reading Intel fw version command failed (%ld)",
1538                        hdev->name, PTR_ERR(skb));
1539                 return PTR_ERR(skb);
1540         }
1541
1542         if (skb->len != sizeof(*ver)) {
1543                 BT_ERR("%s Intel version event length mismatch", hdev->name);
1544                 kfree_skb(skb);
1545                 return -EIO;
1546         }
1547
1548         ver = (struct intel_version *)skb->data;
1549         if (ver->status) {
1550                 BT_ERR("%s Intel fw version event failed (%02x)", hdev->name,
1551                        ver->status);
1552                 kfree_skb(skb);
1553                 return -bt_to_errno(ver->status);
1554         }
1555
1556         BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1557                 hdev->name, ver->hw_platform, ver->hw_variant,
1558                 ver->hw_revision, ver->fw_variant,  ver->fw_revision,
1559                 ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
1560                 ver->fw_patch_num);
1561
1562         /* fw_patch_num indicates the version of patch the device currently
1563          * have. If there is no patch data in the device, it is always 0x00.
1564          * So, if it is other than 0x00, no need to patch the deivce again.
1565          */
1566         if (ver->fw_patch_num) {
1567                 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1568                         hdev->name, ver->fw_patch_num);
1569                 kfree_skb(skb);
1570                 btusb_check_bdaddr_intel(hdev);
1571                 return 0;
1572         }
1573
1574         /* Opens the firmware patch file based on the firmware version read
1575          * from the controller. If it fails to open the matching firmware
1576          * patch file, it tries to open the default firmware patch file.
1577          * If no patch file is found, allow the device to operate without
1578          * a patch.
1579          */
1580         fw = btusb_setup_intel_get_fw(hdev, ver);
1581         if (!fw) {
1582                 kfree_skb(skb);
1583                 btusb_check_bdaddr_intel(hdev);
1584                 return 0;
1585         }
1586         fw_ptr = fw->data;
1587
1588         /* This Intel specific command enables the manufacturer mode of the
1589          * controller.
1590          *
1591          * Only while this mode is enabled, the driver can download the
1592          * firmware patch data and configuration parameters.
1593          */
1594         skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
1595         if (IS_ERR(skb)) {
1596                 BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
1597                        hdev->name, PTR_ERR(skb));
1598                 release_firmware(fw);
1599                 return PTR_ERR(skb);
1600         }
1601
1602         if (skb->data[0]) {
1603                 u8 evt_status = skb->data[0];
1604
1605                 BT_ERR("%s enable Intel manufacturer mode event failed (%02x)",
1606                        hdev->name, evt_status);
1607                 kfree_skb(skb);
1608                 release_firmware(fw);
1609                 return -bt_to_errno(evt_status);
1610         }
1611         kfree_skb(skb);
1612
1613         disable_patch = 1;
1614
1615         /* The firmware data file consists of list of Intel specific HCI
1616          * commands and its expected events. The first byte indicates the
1617          * type of the message, either HCI command or HCI event.
1618          *
1619          * It reads the command and its expected event from the firmware file,
1620          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1621          * the returned event is compared with the event read from the firmware
1622          * file and it will continue until all the messages are downloaded to
1623          * the controller.
1624          *
1625          * Once the firmware patching is completed successfully,
1626          * the manufacturer mode is disabled with reset and activating the
1627          * downloaded patch.
1628          *
1629          * If the firmware patching fails, the manufacturer mode is
1630          * disabled with reset and deactivating the patch.
1631          *
1632          * If the default patch file is used, no reset is done when disabling
1633          * the manufacturer.
1634          */
1635         while (fw->size > fw_ptr - fw->data) {
1636                 int ret;
1637
1638                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1639                                                  &disable_patch);
1640                 if (ret < 0)
1641                         goto exit_mfg_deactivate;
1642         }
1643
1644         release_firmware(fw);
1645
1646         if (disable_patch)
1647                 goto exit_mfg_disable;
1648
1649         /* Patching completed successfully and disable the manufacturer mode
1650          * with reset and activate the downloaded firmware patches.
1651          */
1652         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
1653                              mfg_reset_activate, HCI_INIT_TIMEOUT);
1654         if (IS_ERR(skb)) {
1655                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1656                        hdev->name, PTR_ERR(skb));
1657                 return PTR_ERR(skb);
1658         }
1659         kfree_skb(skb);
1660
1661         BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1662                 hdev->name);
1663
1664         btusb_check_bdaddr_intel(hdev);
1665         return 0;
1666
1667 exit_mfg_disable:
1668         /* Disable the manufacturer mode without reset */
1669         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
1670                              HCI_INIT_TIMEOUT);
1671         if (IS_ERR(skb)) {
1672                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1673                        hdev->name, PTR_ERR(skb));
1674                 return PTR_ERR(skb);
1675         }
1676         kfree_skb(skb);
1677
1678         BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1679
1680         btusb_check_bdaddr_intel(hdev);
1681         return 0;
1682
1683 exit_mfg_deactivate:
1684         release_firmware(fw);
1685
1686         /* Patching failed. Disable the manufacturer mode with reset and
1687          * deactivate the downloaded firmware patches.
1688          */
1689         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
1690                              mfg_reset_deactivate, HCI_INIT_TIMEOUT);
1691         if (IS_ERR(skb)) {
1692                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1693                        hdev->name, PTR_ERR(skb));
1694                 return PTR_ERR(skb);
1695         }
1696         kfree_skb(skb);
1697
1698         BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1699                 hdev->name);
1700
1701         btusb_check_bdaddr_intel(hdev);
1702         return 0;
1703 }
1704
1705 static int btusb_set_bdaddr_intel(struct hci_dev *hdev, const bdaddr_t *bdaddr)
1706 {
1707         struct sk_buff *skb;
1708         long ret;
1709
1710         skb = __hci_cmd_sync(hdev, 0xfc31, 6, bdaddr, HCI_INIT_TIMEOUT);
1711         if (IS_ERR(skb)) {
1712                 ret = PTR_ERR(skb);
1713                 BT_ERR("%s: changing Intel device address failed (%ld)",
1714                        hdev->name, ret);
1715                 return ret;
1716         }
1717         kfree_skb(skb);
1718
1719         return 0;
1720 }
1721
1722 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
1723                                     const bdaddr_t *bdaddr)
1724 {
1725         struct sk_buff *skb;
1726         u8 buf[8];
1727         long ret;
1728
1729         buf[0] = 0xfe;
1730         buf[1] = sizeof(bdaddr_t);
1731         memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
1732
1733         skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
1734         if (IS_ERR(skb)) {
1735                 ret = PTR_ERR(skb);
1736                 BT_ERR("%s: changing Marvell device address failed (%ld)",
1737                        hdev->name, ret);
1738                 return ret;
1739         }
1740         kfree_skb(skb);
1741
1742         return 0;
1743 }
1744
1745 #define BDADDR_BCM20702A0 (&(bdaddr_t) {{0x00, 0xa0, 0x02, 0x70, 0x20, 0x00}})
1746
1747 static int btusb_setup_bcm_patchram(struct hci_dev *hdev)
1748 {
1749         struct btusb_data *data = hci_get_drvdata(hdev);
1750         struct usb_device *udev = data->udev;
1751         char fw_name[64];
1752         const struct firmware *fw;
1753         const u8 *fw_ptr;
1754         size_t fw_size;
1755         const struct hci_command_hdr *cmd;
1756         const u8 *cmd_param;
1757         u16 opcode;
1758         struct sk_buff *skb;
1759         struct hci_rp_read_local_version *ver;
1760         struct hci_rp_read_bd_addr *bda;
1761         long ret;
1762
1763         snprintf(fw_name, sizeof(fw_name), "brcm/%s-%04x-%04x.hcd",
1764                  udev->product ? udev->product : "BCM",
1765                  le16_to_cpu(udev->descriptor.idVendor),
1766                  le16_to_cpu(udev->descriptor.idProduct));
1767
1768         ret = request_firmware(&fw, fw_name, &hdev->dev);
1769         if (ret < 0) {
1770                 BT_INFO("%s: BCM: patch %s not found", hdev->name, fw_name);
1771                 return 0;
1772         }
1773
1774         /* Reset */
1775         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1776         if (IS_ERR(skb)) {
1777                 ret = PTR_ERR(skb);
1778                 BT_ERR("%s: HCI_OP_RESET failed (%ld)", hdev->name, ret);
1779                 goto done;
1780         }
1781         kfree_skb(skb);
1782
1783         /* Read Local Version Info */
1784         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1785                              HCI_INIT_TIMEOUT);
1786         if (IS_ERR(skb)) {
1787                 ret = PTR_ERR(skb);
1788                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION failed (%ld)",
1789                        hdev->name, ret);
1790                 goto done;
1791         }
1792
1793         if (skb->len != sizeof(*ver)) {
1794                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION event length mismatch",
1795                        hdev->name);
1796                 kfree_skb(skb);
1797                 ret = -EIO;
1798                 goto done;
1799         }
1800
1801         ver = (struct hci_rp_read_local_version *)skb->data;
1802         BT_INFO("%s: BCM: patching hci_ver=%02x hci_rev=%04x lmp_ver=%02x "
1803                 "lmp_subver=%04x", hdev->name, ver->hci_ver, ver->hci_rev,
1804                 ver->lmp_ver, ver->lmp_subver);
1805         kfree_skb(skb);
1806
1807         /* Start Download */
1808         skb = __hci_cmd_sync(hdev, 0xfc2e, 0, NULL, HCI_INIT_TIMEOUT);
1809         if (IS_ERR(skb)) {
1810                 ret = PTR_ERR(skb);
1811                 BT_ERR("%s: BCM: Download Minidrv command failed (%ld)",
1812                        hdev->name, ret);
1813                 goto reset_fw;
1814         }
1815         kfree_skb(skb);
1816
1817         /* 50 msec delay after Download Minidrv completes */
1818         msleep(50);
1819
1820         fw_ptr = fw->data;
1821         fw_size = fw->size;
1822
1823         while (fw_size >= sizeof(*cmd)) {
1824                 cmd = (struct hci_command_hdr *)fw_ptr;
1825                 fw_ptr += sizeof(*cmd);
1826                 fw_size -= sizeof(*cmd);
1827
1828                 if (fw_size < cmd->plen) {
1829                         BT_ERR("%s: BCM: patch %s is corrupted",
1830                                hdev->name, fw_name);
1831                         ret = -EINVAL;
1832                         goto reset_fw;
1833                 }
1834
1835                 cmd_param = fw_ptr;
1836                 fw_ptr += cmd->plen;
1837                 fw_size -= cmd->plen;
1838
1839                 opcode = le16_to_cpu(cmd->opcode);
1840
1841                 skb = __hci_cmd_sync(hdev, opcode, cmd->plen, cmd_param,
1842                                      HCI_INIT_TIMEOUT);
1843                 if (IS_ERR(skb)) {
1844                         ret = PTR_ERR(skb);
1845                         BT_ERR("%s: BCM: patch command %04x failed (%ld)",
1846                                hdev->name, opcode, ret);
1847                         goto reset_fw;
1848                 }
1849                 kfree_skb(skb);
1850         }
1851
1852         /* 250 msec delay after Launch Ram completes */
1853         msleep(250);
1854
1855 reset_fw:
1856         /* Reset */
1857         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1858         if (IS_ERR(skb)) {
1859                 ret = PTR_ERR(skb);
1860                 BT_ERR("%s: HCI_OP_RESET failed (%ld)", hdev->name, ret);
1861                 goto done;
1862         }
1863         kfree_skb(skb);
1864
1865         /* Read Local Version Info */
1866         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1867                              HCI_INIT_TIMEOUT);
1868         if (IS_ERR(skb)) {
1869                 ret = PTR_ERR(skb);
1870                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION failed (%ld)",
1871                        hdev->name, ret);
1872                 goto done;
1873         }
1874
1875         if (skb->len != sizeof(*ver)) {
1876                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION event length mismatch",
1877                        hdev->name);
1878                 kfree_skb(skb);
1879                 ret = -EIO;
1880                 goto done;
1881         }
1882
1883         ver = (struct hci_rp_read_local_version *)skb->data;
1884         BT_INFO("%s: BCM: firmware hci_ver=%02x hci_rev=%04x lmp_ver=%02x "
1885                 "lmp_subver=%04x", hdev->name, ver->hci_ver, ver->hci_rev,
1886                 ver->lmp_ver, ver->lmp_subver);
1887         kfree_skb(skb);
1888
1889         /* Read BD Address */
1890         skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
1891                              HCI_INIT_TIMEOUT);
1892         if (IS_ERR(skb)) {
1893                 ret = PTR_ERR(skb);
1894                 BT_ERR("%s: HCI_OP_READ_BD_ADDR failed (%ld)",
1895                        hdev->name, ret);
1896                 goto done;
1897         }
1898
1899         if (skb->len != sizeof(*bda)) {
1900                 BT_ERR("%s: HCI_OP_READ_BD_ADDR event length mismatch",
1901                        hdev->name);
1902                 kfree_skb(skb);
1903                 ret = -EIO;
1904                 goto done;
1905         }
1906
1907         bda = (struct hci_rp_read_bd_addr *)skb->data;
1908         if (bda->status) {
1909                 BT_ERR("%s: HCI_OP_READ_BD_ADDR error status (%02x)",
1910                        hdev->name, bda->status);
1911                 kfree_skb(skb);
1912                 ret = -bt_to_errno(bda->status);
1913                 goto done;
1914         }
1915
1916         /* The address 00:20:70:02:A0:00 indicates a BCM20702A0 controller
1917          * with no configured address.
1918          */
1919         if (!bacmp(&bda->bdaddr, BDADDR_BCM20702A0)) {
1920                 BT_INFO("%s: BCM: using default device address (%pMR)",
1921                         hdev->name, &bda->bdaddr);
1922                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
1923         }
1924
1925         kfree_skb(skb);
1926
1927 done:
1928         release_firmware(fw);
1929
1930         return ret;
1931 }
1932
1933 static int btusb_set_bdaddr_bcm(struct hci_dev *hdev, const bdaddr_t *bdaddr)
1934 {
1935         struct sk_buff *skb;
1936         long ret;
1937
1938         skb = __hci_cmd_sync(hdev, 0xfc01, 6, bdaddr, HCI_INIT_TIMEOUT);
1939         if (IS_ERR(skb)) {
1940                 ret = PTR_ERR(skb);
1941                 BT_ERR("%s: BCM: Change address command failed (%ld)",
1942                        hdev->name, ret);
1943                 return ret;
1944         }
1945         kfree_skb(skb);
1946
1947         return 0;
1948 }
1949
1950 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
1951                                     const bdaddr_t *bdaddr)
1952 {
1953         struct sk_buff *skb;
1954         u8 buf[10];
1955         long ret;
1956
1957         buf[0] = 0x01;
1958         buf[1] = 0x01;
1959         buf[2] = 0x00;
1960         buf[3] = sizeof(bdaddr_t);
1961         memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
1962
1963         skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
1964         if (IS_ERR(skb)) {
1965                 ret = PTR_ERR(skb);
1966                 BT_ERR("%s: Change address command failed (%ld)",
1967                        hdev->name, ret);
1968                 return ret;
1969         }
1970         kfree_skb(skb);
1971
1972         return 0;
1973 }
1974
1975 static int btusb_probe(struct usb_interface *intf,
1976                        const struct usb_device_id *id)
1977 {
1978         struct usb_endpoint_descriptor *ep_desc;
1979         struct btusb_data *data;
1980         struct hci_dev *hdev;
1981         int i, err;
1982
1983         BT_DBG("intf %p id %p", intf, id);
1984
1985         /* interface numbers are hardcoded in the spec */
1986         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
1987                 return -ENODEV;
1988
1989         if (!id->driver_info) {
1990                 const struct usb_device_id *match;
1991
1992                 match = usb_match_id(intf, blacklist_table);
1993                 if (match)
1994                         id = match;
1995         }
1996
1997         if (id->driver_info == BTUSB_IGNORE)
1998                 return -ENODEV;
1999
2000         if (id->driver_info & BTUSB_ATH3012) {
2001                 struct usb_device *udev = interface_to_usbdev(intf);
2002
2003                 /* Old firmware would otherwise let ath3k driver load
2004                  * patch and sysconfig files */
2005                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
2006                         return -ENODEV;
2007         }
2008
2009         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
2010         if (!data)
2011                 return -ENOMEM;
2012
2013         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2014                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2015
2016                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
2017                         data->intr_ep = ep_desc;
2018                         continue;
2019                 }
2020
2021                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
2022                         data->bulk_tx_ep = ep_desc;
2023                         continue;
2024                 }
2025
2026                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
2027                         data->bulk_rx_ep = ep_desc;
2028                         continue;
2029                 }
2030         }
2031
2032         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
2033                 return -ENODEV;
2034
2035         data->cmdreq_type = USB_TYPE_CLASS;
2036
2037         data->udev = interface_to_usbdev(intf);
2038         data->intf = intf;
2039
2040         INIT_WORK(&data->work, btusb_work);
2041         INIT_WORK(&data->waker, btusb_waker);
2042         init_usb_anchor(&data->deferred);
2043         init_usb_anchor(&data->tx_anchor);
2044         spin_lock_init(&data->txlock);
2045
2046         init_usb_anchor(&data->intr_anchor);
2047         init_usb_anchor(&data->bulk_anchor);
2048         init_usb_anchor(&data->isoc_anchor);
2049         spin_lock_init(&data->rxlock);
2050
2051         data->recv_bulk = btusb_recv_bulk;
2052
2053         hdev = hci_alloc_dev();
2054         if (!hdev)
2055                 return -ENOMEM;
2056
2057         hdev->bus = HCI_USB;
2058         hci_set_drvdata(hdev, data);
2059
2060         data->hdev = hdev;
2061
2062         SET_HCIDEV_DEV(hdev, &intf->dev);
2063
2064         hdev->open   = btusb_open;
2065         hdev->close  = btusb_close;
2066         hdev->flush  = btusb_flush;
2067         hdev->send   = btusb_send_frame;
2068         hdev->notify = btusb_notify;
2069
2070         if (id->driver_info & BTUSB_BCM92035)
2071                 hdev->setup = btusb_setup_bcm92035;
2072
2073         if (id->driver_info & BTUSB_BCM_PATCHRAM) {
2074                 hdev->setup = btusb_setup_bcm_patchram;
2075                 hdev->set_bdaddr = btusb_set_bdaddr_bcm;
2076                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2077         }
2078
2079         if (id->driver_info & BTUSB_INTEL) {
2080                 hdev->setup = btusb_setup_intel;
2081                 hdev->set_bdaddr = btusb_set_bdaddr_intel;
2082         }
2083
2084         if (id->driver_info & BTUSB_MARVELL)
2085                 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
2086
2087         if (id->driver_info & BTUSB_SWAVE)
2088                 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
2089
2090         if (id->driver_info & BTUSB_INTEL_BOOT)
2091                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
2092
2093         if (id->driver_info & BTUSB_ATH3012)
2094                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
2095
2096         /* Interface numbers are hardcoded in the specification */
2097         data->isoc = usb_ifnum_to_if(data->udev, 1);
2098
2099         if (!reset)
2100                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2101
2102         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
2103                 if (!disable_scofix)
2104                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
2105         }
2106
2107         if (id->driver_info & BTUSB_BROKEN_ISOC)
2108                 data->isoc = NULL;
2109
2110         if (id->driver_info & BTUSB_DIGIANSWER) {
2111                 data->cmdreq_type = USB_TYPE_VENDOR;
2112                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2113         }
2114
2115         if (id->driver_info & BTUSB_CSR) {
2116                 struct usb_device *udev = data->udev;
2117                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
2118
2119                 /* Old firmware would otherwise execute USB reset */
2120                 if (bcdDevice < 0x117)
2121                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2122
2123                 /* Fake CSR devices with broken commands */
2124                 if (bcdDevice <= 0x100)
2125                         hdev->setup = btusb_setup_csr;
2126         }
2127
2128         if (id->driver_info & BTUSB_SNIFFER) {
2129                 struct usb_device *udev = data->udev;
2130
2131                 /* New sniffer firmware has crippled HCI interface */
2132                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
2133                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
2134         }
2135
2136         if (id->driver_info & BTUSB_INTEL_BOOT) {
2137                 /* A bug in the bootloader causes that interrupt interface is
2138                  * only enabled after receiving SetInterface(0, AltSetting=0).
2139                  */
2140                 err = usb_set_interface(data->udev, 0, 0);
2141                 if (err < 0) {
2142                         BT_ERR("failed to set interface 0, alt 0 %d", err);
2143                         hci_free_dev(hdev);
2144                         return err;
2145                 }
2146         }
2147
2148         if (data->isoc) {
2149                 err = usb_driver_claim_interface(&btusb_driver,
2150                                                  data->isoc, data);
2151                 if (err < 0) {
2152                         hci_free_dev(hdev);
2153                         return err;
2154                 }
2155         }
2156
2157         err = hci_register_dev(hdev);
2158         if (err < 0) {
2159                 hci_free_dev(hdev);
2160                 return err;
2161         }
2162
2163         usb_set_intfdata(intf, data);
2164
2165         return 0;
2166 }
2167
2168 static void btusb_disconnect(struct usb_interface *intf)
2169 {
2170         struct btusb_data *data = usb_get_intfdata(intf);
2171         struct hci_dev *hdev;
2172
2173         BT_DBG("intf %p", intf);
2174
2175         if (!data)
2176                 return;
2177
2178         hdev = data->hdev;
2179         usb_set_intfdata(data->intf, NULL);
2180
2181         if (data->isoc)
2182                 usb_set_intfdata(data->isoc, NULL);
2183
2184         hci_unregister_dev(hdev);
2185
2186         if (intf == data->isoc)
2187                 usb_driver_release_interface(&btusb_driver, data->intf);
2188         else if (data->isoc)
2189                 usb_driver_release_interface(&btusb_driver, data->isoc);
2190
2191         btusb_free_frags(data);
2192         hci_free_dev(hdev);
2193 }
2194
2195 #ifdef CONFIG_PM
2196 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
2197 {
2198         struct btusb_data *data = usb_get_intfdata(intf);
2199
2200         BT_DBG("intf %p", intf);
2201
2202         if (data->suspend_count++)
2203                 return 0;
2204
2205         spin_lock_irq(&data->txlock);
2206         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
2207                 set_bit(BTUSB_SUSPENDING, &data->flags);
2208                 spin_unlock_irq(&data->txlock);
2209         } else {
2210                 spin_unlock_irq(&data->txlock);
2211                 data->suspend_count--;
2212                 return -EBUSY;
2213         }
2214
2215         cancel_work_sync(&data->work);
2216
2217         btusb_stop_traffic(data);
2218         usb_kill_anchored_urbs(&data->tx_anchor);
2219
2220         return 0;
2221 }
2222
2223 static void play_deferred(struct btusb_data *data)
2224 {
2225         struct urb *urb;
2226         int err;
2227
2228         while ((urb = usb_get_from_anchor(&data->deferred))) {
2229                 err = usb_submit_urb(urb, GFP_ATOMIC);
2230                 if (err < 0)
2231                         break;
2232
2233                 data->tx_in_flight++;
2234         }
2235         usb_scuttle_anchored_urbs(&data->deferred);
2236 }
2237
2238 static int btusb_resume(struct usb_interface *intf)
2239 {
2240         struct btusb_data *data = usb_get_intfdata(intf);
2241         struct hci_dev *hdev = data->hdev;
2242         int err = 0;
2243
2244         BT_DBG("intf %p", intf);
2245
2246         if (--data->suspend_count)
2247                 return 0;
2248
2249         if (!test_bit(HCI_RUNNING, &hdev->flags))
2250                 goto done;
2251
2252         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
2253                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
2254                 if (err < 0) {
2255                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
2256                         goto failed;
2257                 }
2258         }
2259
2260         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
2261                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
2262                 if (err < 0) {
2263                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
2264                         goto failed;
2265                 }
2266
2267                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
2268         }
2269
2270         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
2271                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
2272                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
2273                 else
2274                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
2275         }
2276
2277         spin_lock_irq(&data->txlock);
2278         play_deferred(data);
2279         clear_bit(BTUSB_SUSPENDING, &data->flags);
2280         spin_unlock_irq(&data->txlock);
2281         schedule_work(&data->work);
2282
2283         return 0;
2284
2285 failed:
2286         usb_scuttle_anchored_urbs(&data->deferred);
2287 done:
2288         spin_lock_irq(&data->txlock);
2289         clear_bit(BTUSB_SUSPENDING, &data->flags);
2290         spin_unlock_irq(&data->txlock);
2291
2292         return err;
2293 }
2294 #endif
2295
2296 static struct usb_driver btusb_driver = {
2297         .name           = "btusb",
2298         .probe          = btusb_probe,
2299         .disconnect     = btusb_disconnect,
2300 #ifdef CONFIG_PM
2301         .suspend        = btusb_suspend,
2302         .resume         = btusb_resume,
2303 #endif
2304         .id_table       = btusb_table,
2305         .supports_autosuspend = 1,
2306         .disable_hub_initiated_lpm = 1,
2307 };
2308
2309 module_usb_driver(btusb_driver);
2310
2311 module_param(disable_scofix, bool, 0644);
2312 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
2313
2314 module_param(force_scofix, bool, 0644);
2315 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
2316
2317 module_param(reset, bool, 0644);
2318 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
2319
2320 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
2321 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
2322 MODULE_VERSION(VERSION);
2323 MODULE_LICENSE("GPL");