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