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