drivers/bluetooth/btusb.c

   1 /*
   2  *
   3  *  Generic Bluetooth USB driver
   4  *
   5  *  Copyright (C) 2005-2008  Marcel Holtmann <marcel@holtmann.org>
   6  *
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, write to the Free Software
  20  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  *
  22  */
  23
  24 #include <linux/module.h>
  25 #include <linux/usb.h>
  26 #include <linux/firmware.h>
  27
  28 #include <net/bluetooth/bluetooth.h>
  29 #include <net/bluetooth/hci_core.h>
  30
  31 #define VERSION "0.6"
  32
  33 static bool disable_scofix;
  34 static bool force_scofix;
  35
  36 static bool reset = 1;
  37
  38 static struct usb_driver btusb_driver;
  39
  40 #define BTUSB_IGNORE            0x01
  41 #define BTUSB_DIGIANSWER        0x02
  42 #define BTUSB_CSR               0x04
  43 #define BTUSB_SNIFFER           0x08
  44 #define BTUSB_BCM92035          0x10
  45 #define BTUSB_BROKEN_ISOC       0x20
  46 #define BTUSB_WRONG_SCO_MTU     0x40
  47 #define BTUSB_ATH3012           0x80
  48 #define BTUSB_INTEL             0x100
  49 #define BTUSB_INTEL_BOOT        0x200
  50 #define BTUSB_BCM_PATCHRAM      0x400
  51 #define BTUSB_MARVELL           0x800
  52
  53 static const struct usb_device_id btusb_table[] = {
  54         /* Generic Bluetooth USB device */
  55         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  56
  57         /* Apple-specific (Broadcom) devices */
  58         { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01) },
  59
  60         /* MediaTek MT76x0E */
  61         { USB_DEVICE(0x0e8d, 0x763f) },
  62
  63         /* Broadcom SoftSailing reporting vendor specific */
  64         { USB_DEVICE(0x0a5c, 0x21e1) },
  65
  66         /* Apple MacBookPro 7,1 */
  67         { USB_DEVICE(0x05ac, 0x8213) },
  68
  69         /* Apple iMac11,1 */
  70         { USB_DEVICE(0x05ac, 0x8215) },
  71
  72         /* Apple MacBookPro6,2 */
  73         { USB_DEVICE(0x05ac, 0x8218) },
  74
  75         /* Apple MacBookAir3,1, MacBookAir3,2 */
  76         { USB_DEVICE(0x05ac, 0x821b) },
  77
  78         /* Apple MacBookAir4,1 */
  79         { USB_DEVICE(0x05ac, 0x821f) },
  80
  81         /* Apple MacBookPro8,2 */
  82         { USB_DEVICE(0x05ac, 0x821a) },
  83
  84         /* Apple MacMini5,1 */
  85         { USB_DEVICE(0x05ac, 0x8281) },
  86
  87         /* AVM BlueFRITZ! USB v2.0 */
  88         { USB_DEVICE(0x057c, 0x3800) },
  89
  90         /* Bluetooth Ultraport Module from IBM */
  91         { USB_DEVICE(0x04bf, 0x030a) },
  92
  93         /* ALPS Modules with non-standard id */
  94         { USB_DEVICE(0x044e, 0x3001) },
  95         { USB_DEVICE(0x044e, 0x3002) },
  96
  97         /* Ericsson with non-standard id */
  98         { USB_DEVICE(0x0bdb, 0x1002) },
  99
 100         /* Canyon CN-BTU1 with HID interfaces */
 101         { USB_DEVICE(0x0c10, 0x0000) },
 102
 103         /* Broadcom BCM20702A0 */
 104         { USB_DEVICE(0x0489, 0xe042) },
 105         { USB_DEVICE(0x04ca, 0x2003) },
 106         { USB_DEVICE(0x0b05, 0x17b5) },
 107         { USB_DEVICE(0x0b05, 0x17cb) },
 108         { USB_DEVICE(0x413c, 0x8197) },
 109
 110         /* Foxconn - Hon Hai */
 111         { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01) },
 112
 113         /* Broadcom devices with vendor specific id */
 114         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
 115           .driver_info = BTUSB_BCM_PATCHRAM },
 116
 117         /* ASUSTek Computer - Broadcom based */
 118         { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01) },
 119
 120         /* Belkin F8065bf - Broadcom based */
 121         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01) },
 122
 123         /* IMC Networks - Broadcom based */
 124         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01) },
 125
 126         /* Intel Bluetooth USB Bootloader (RAM module) */
 127         { USB_DEVICE(0x8087, 0x0a5a),
 128           .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
 129
 130         { }     /* Terminating entry */
 131 };
 132
 133 MODULE_DEVICE_TABLE(usb, btusb_table);
 134
 135 static const struct usb_device_id blacklist_table[] = {
 136         /* CSR BlueCore devices */
 137         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 138
 139         /* Broadcom BCM2033 without firmware */
 140         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 141
 142         /* Atheros 3011 with sflash firmware */
 143         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 144         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 145         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 146         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 147         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 148         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 149
 150         /* Atheros AR9285 Malbec with sflash firmware */
 151         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 152
 153         /* Atheros 3012 with sflash firmware */
 154         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 155         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 156         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 157         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 158         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 159         { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
 160         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 161         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 162         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 163         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 164         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 165         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 166         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 167         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 168         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 169         { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
 170         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 171         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 172         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 173         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 174         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 175         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
 176         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 177         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 178         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 179         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 180         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 181         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 182         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 183         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 184         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 185         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 186         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
 187
 188         /* Atheros AR5BBU12 with sflash firmware */
 189         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 190
 191         /* Atheros AR5BBU12 with sflash firmware */
 192         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 193         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 194
 195         /* Broadcom BCM2035 */
 196         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 197         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 198         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 199
 200         /* Broadcom BCM2045 */
 201         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 202         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 203
 204         /* IBM/Lenovo ThinkPad with Broadcom chip */
 205         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 206         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 207
 208         /* HP laptop with Broadcom chip */
 209         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 210
 211         /* Dell laptop with Broadcom chip */
 212         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 213
 214         /* Dell Wireless 370 and 410 devices */
 215         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 216         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 217
 218         /* Belkin F8T012 and F8T013 devices */
 219         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 220         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 221
 222         /* Asus WL-BTD202 device */
 223         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 224
 225         /* Kensington Bluetooth USB adapter */
 226         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 227
 228         /* RTX Telecom based adapters with buggy SCO support */
 229         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 230         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 231
 232         /* CONWISE Technology based adapters with buggy SCO support */
 233         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 234
 235         /* Digianswer devices */
 236         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 237         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 238
 239         /* CSR BlueCore Bluetooth Sniffer */
 240         { USB_DEVICE(0x0a12, 0x0002),
 241           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 242
 243         /* Frontline ComProbe Bluetooth Sniffer */
 244         { USB_DEVICE(0x16d3, 0x0002),
 245           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 246
 247         /* Intel Bluetooth device */
 248         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 249         { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
 250
 251         /* Marvell device */
 252         { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
 253         { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
 254
 255         { }     /* Terminating entry */
 256 };
 257
 258 #define BTUSB_MAX_ISOC_FRAMES   10
 259
 260 #define BTUSB_INTR_RUNNING      0
 261 #define BTUSB_BULK_RUNNING      1
 262 #define BTUSB_ISOC_RUNNING      2
 263 #define BTUSB_SUSPENDING        3
 264 #define BTUSB_DID_ISO_RESUME    4
 265
 266 struct btusb_data {
 267         struct hci_dev       *hdev;
 268         struct usb_device    *udev;
 269         struct usb_interface *intf;
 270         struct usb_interface *isoc;
 271
 272         unsigned long flags;
 273
 274         struct work_struct work;
 275         struct work_struct waker;
 276
 277         struct usb_anchor deferred;
 278         struct usb_anchor tx_anchor;
 279         int tx_in_flight;
 280         spinlock_t txlock;
 281
 282         struct usb_anchor intr_anchor;
 283         struct usb_anchor bulk_anchor;
 284         struct usb_anchor isoc_anchor;
 285         spinlock_t rxlock;
 286
 287         struct sk_buff *evt_skb;
 288         struct sk_buff *acl_skb;
 289         struct sk_buff *sco_skb;
 290
 291         struct usb_endpoint_descriptor *intr_ep;
 292         struct usb_endpoint_descriptor *bulk_tx_ep;
 293         struct usb_endpoint_descriptor *bulk_rx_ep;
 294         struct usb_endpoint_descriptor *isoc_tx_ep;
 295         struct usb_endpoint_descriptor *isoc_rx_ep;
 296
 297         __u8 cmdreq_type;
 298
 299         unsigned int sco_num;
 300         int isoc_altsetting;
 301         int suspend_count;
 302
 303         int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
 304 };
 305
 306 static inline void btusb_free_frags(struct btusb_data *data)
 307 {
 308         unsigned long flags;
 309
 310         spin_lock_irqsave(&data->rxlock, flags);
 311
 312         kfree_skb(data->evt_skb);
 313         data->evt_skb = NULL;
 314
 315         kfree_skb(data->acl_skb);
 316         data->acl_skb = NULL;
 317
 318         kfree_skb(data->sco_skb);
 319         data->sco_skb = NULL;
 320
 321         spin_unlock_irqrestore(&data->rxlock, flags);
 322 }
 323
 324 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
 325 {
 326         struct sk_buff *skb;
 327         int err = 0;
 328
 329         spin_lock(&data->rxlock);
 330         skb = data->evt_skb;
 331
 332         while (count) {
 333                 int len;
 334
 335                 if (!skb) {
 336                         skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
 337                         if (!skb) {
 338                                 err = -ENOMEM;
 339                                 break;
 340                         }
 341
 342                         bt_cb(skb)->pkt_type = HCI_EVENT_PKT;
 343                         bt_cb(skb)->expect = HCI_EVENT_HDR_SIZE;
 344                 }
 345
 346                 len = min_t(uint, bt_cb(skb)->expect, count);
 347                 memcpy(skb_put(skb, len), buffer, len);
 348
 349                 count -= len;
 350                 buffer += len;
 351                 bt_cb(skb)->expect -= len;
 352
 353                 if (skb->len == HCI_EVENT_HDR_SIZE) {
 354                         /* Complete event header */
 355                         bt_cb(skb)->expect = hci_event_hdr(skb)->plen;
 356
 357                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 358                                 kfree_skb(skb);
 359                                 skb = NULL;
 360
 361                                 err = -EILSEQ;
 362                                 break;
 363                         }
 364                 }
 365
 366                 if (bt_cb(skb)->expect == 0) {
 367                         /* Complete frame */
 368                         hci_recv_frame(data->hdev, skb);
 369                         skb = NULL;
 370                 }
 371         }
 372
 373         data->evt_skb = skb;
 374         spin_unlock(&data->rxlock);
 375
 376         return err;
 377 }
 378
 379 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
 380 {
 381         struct sk_buff *skb;
 382         int err = 0;
 383
 384         spin_lock(&data->rxlock);
 385         skb = data->acl_skb;
 386
 387         while (count) {
 388                 int len;
 389
 390                 if (!skb) {
 391                         skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
 392                         if (!skb) {
 393                                 err = -ENOMEM;
 394                                 break;
 395                         }
 396
 397                         bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT;
 398                         bt_cb(skb)->expect = HCI_ACL_HDR_SIZE;
 399                 }
 400
 401                 len = min_t(uint, bt_cb(skb)->expect, count);
 402                 memcpy(skb_put(skb, len), buffer, len);
 403
 404                 count -= len;
 405                 buffer += len;
 406                 bt_cb(skb)->expect -= len;
 407
 408                 if (skb->len == HCI_ACL_HDR_SIZE) {
 409                         __le16 dlen = hci_acl_hdr(skb)->dlen;
 410
 411                         /* Complete ACL header */
 412                         bt_cb(skb)->expect = __le16_to_cpu(dlen);
 413
 414                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 415                                 kfree_skb(skb);
 416                                 skb = NULL;
 417
 418                                 err = -EILSEQ;
 419                                 break;
 420                         }
 421                 }
 422
 423                 if (bt_cb(skb)->expect == 0) {
 424                         /* Complete frame */
 425                         hci_recv_frame(data->hdev, skb);
 426                         skb = NULL;
 427                 }
 428         }
 429
 430         data->acl_skb = skb;
 431         spin_unlock(&data->rxlock);
 432
 433         return err;
 434 }
 435
 436 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
 437 {
 438         struct sk_buff *skb;
 439         int err = 0;
 440
 441         spin_lock(&data->rxlock);
 442         skb = data->sco_skb;
 443
 444         while (count) {
 445                 int len;
 446
 447                 if (!skb) {
 448                         skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
 449                         if (!skb) {
 450                                 err = -ENOMEM;
 451                                 break;
 452                         }
 453
 454                         bt_cb(skb)->pkt_type = HCI_SCODATA_PKT;
 455                         bt_cb(skb)->expect = HCI_SCO_HDR_SIZE;
 456                 }
 457
 458                 len = min_t(uint, bt_cb(skb)->expect, count);
 459                 memcpy(skb_put(skb, len), buffer, len);
 460
 461                 count -= len;
 462                 buffer += len;
 463                 bt_cb(skb)->expect -= len;
 464
 465                 if (skb->len == HCI_SCO_HDR_SIZE) {
 466                         /* Complete SCO header */
 467                         bt_cb(skb)->expect = hci_sco_hdr(skb)->dlen;
 468
 469                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 470                                 kfree_skb(skb);
 471                                 skb = NULL;
 472
 473                                 err = -EILSEQ;
 474                                 break;
 475                         }
 476                 }
 477
 478                 if (bt_cb(skb)->expect == 0) {
 479                         /* Complete frame */
 480                         hci_recv_frame(data->hdev, skb);
 481                         skb = NULL;
 482                 }
 483         }
 484
 485         data->sco_skb = skb;
 486         spin_unlock(&data->rxlock);
 487
 488         return err;
 489 }
 490
 491 static void btusb_intr_complete(struct urb *urb)
 492 {
 493         struct hci_dev *hdev = urb->context;
 494         struct btusb_data *data = hci_get_drvdata(hdev);
 495         int err;
 496
 497         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 498                urb->actual_length);
 499
 500         if (!test_bit(HCI_RUNNING, &hdev->flags))
 501                 return;
 502
 503         if (urb->status == 0) {
 504                 hdev->stat.byte_rx += urb->actual_length;
 505
 506                 if (btusb_recv_intr(data, urb->transfer_buffer,
 507                                     urb->actual_length) < 0) {
 508                         BT_ERR("%s corrupted event packet", hdev->name);
 509                         hdev->stat.err_rx++;
 510                 }
 511         } else if (urb->status == -ENOENT) {
 512                 /* Avoid suspend failed when usb_kill_urb */
 513                 return;
 514         }
 515
 516         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 517                 return;
 518
 519         usb_mark_last_busy(data->udev);
 520         usb_anchor_urb(urb, &data->intr_anchor);
 521
 522         err = usb_submit_urb(urb, GFP_ATOMIC);
 523         if (err < 0) {
 524                 /* -EPERM: urb is being killed;
 525                  * -ENODEV: device got disconnected */
 526                 if (err != -EPERM && err != -ENODEV)
 527                         BT_ERR("%s urb %p failed to resubmit (%d)",
 528                                hdev->name, urb, -err);
 529                 usb_unanchor_urb(urb);
 530         }
 531 }
 532
 533 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 534 {
 535         struct btusb_data *data = hci_get_drvdata(hdev);
 536         struct urb *urb;
 537         unsigned char *buf;
 538         unsigned int pipe;
 539         int err, size;
 540
 541         BT_DBG("%s", hdev->name);
 542
 543         if (!data->intr_ep)
 544                 return -ENODEV;
 545
 546         urb = usb_alloc_urb(0, mem_flags);
 547         if (!urb)
 548                 return -ENOMEM;
 549
 550         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 551
 552         buf = kmalloc(size, mem_flags);
 553         if (!buf) {
 554                 usb_free_urb(urb);
 555                 return -ENOMEM;
 556         }
 557
 558         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 559
 560         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 561                          btusb_intr_complete, hdev, data->intr_ep->bInterval);
 562
 563         urb->transfer_flags |= URB_FREE_BUFFER;
 564
 565         usb_anchor_urb(urb, &data->intr_anchor);
 566
 567         err = usb_submit_urb(urb, mem_flags);
 568         if (err < 0) {
 569                 if (err != -EPERM && err != -ENODEV)
 570                         BT_ERR("%s urb %p submission failed (%d)",
 571                                hdev->name, urb, -err);
 572                 usb_unanchor_urb(urb);
 573         }
 574
 575         usb_free_urb(urb);
 576
 577         return err;
 578 }
 579
 580 static void btusb_bulk_complete(struct urb *urb)
 581 {
 582         struct hci_dev *hdev = urb->context;
 583         struct btusb_data *data = hci_get_drvdata(hdev);
 584         int err;
 585
 586         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 587                urb->actual_length);
 588
 589         if (!test_bit(HCI_RUNNING, &hdev->flags))
 590                 return;
 591
 592         if (urb->status == 0) {
 593                 hdev->stat.byte_rx += urb->actual_length;
 594
 595                 if (data->recv_bulk(data, urb->transfer_buffer,
 596                                     urb->actual_length) < 0) {
 597                         BT_ERR("%s corrupted ACL packet", hdev->name);
 598                         hdev->stat.err_rx++;
 599                 }
 600         } else if (urb->status == -ENOENT) {
 601                 /* Avoid suspend failed when usb_kill_urb */
 602                 return;
 603         }
 604
 605         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 606                 return;
 607
 608         usb_anchor_urb(urb, &data->bulk_anchor);
 609         usb_mark_last_busy(data->udev);
 610
 611         err = usb_submit_urb(urb, GFP_ATOMIC);
 612         if (err < 0) {
 613                 /* -EPERM: urb is being killed;
 614                  * -ENODEV: device got disconnected */
 615                 if (err != -EPERM && err != -ENODEV)
 616                         BT_ERR("%s urb %p failed to resubmit (%d)",
 617                                hdev->name, urb, -err);
 618                 usb_unanchor_urb(urb);
 619         }
 620 }
 621
 622 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 623 {
 624         struct btusb_data *data = hci_get_drvdata(hdev);
 625         struct urb *urb;
 626         unsigned char *buf;
 627         unsigned int pipe;
 628         int err, size = HCI_MAX_FRAME_SIZE;
 629
 630         BT_DBG("%s", hdev->name);
 631
 632         if (!data->bulk_rx_ep)
 633                 return -ENODEV;
 634
 635         urb = usb_alloc_urb(0, mem_flags);
 636         if (!urb)
 637                 return -ENOMEM;
 638
 639         buf = kmalloc(size, mem_flags);
 640         if (!buf) {
 641                 usb_free_urb(urb);
 642                 return -ENOMEM;
 643         }
 644
 645         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 646
 647         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
 648                           btusb_bulk_complete, hdev);
 649
 650         urb->transfer_flags |= URB_FREE_BUFFER;
 651
 652         usb_mark_last_busy(data->udev);
 653         usb_anchor_urb(urb, &data->bulk_anchor);
 654
 655         err = usb_submit_urb(urb, mem_flags);
 656         if (err < 0) {
 657                 if (err != -EPERM && err != -ENODEV)
 658                         BT_ERR("%s urb %p submission failed (%d)",
 659                                hdev->name, urb, -err);
 660                 usb_unanchor_urb(urb);
 661         }
 662
 663         usb_free_urb(urb);
 664
 665         return err;
 666 }
 667
 668 static void btusb_isoc_complete(struct urb *urb)
 669 {
 670         struct hci_dev *hdev = urb->context;
 671         struct btusb_data *data = hci_get_drvdata(hdev);
 672         int i, err;
 673
 674         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 675                urb->actual_length);
 676
 677         if (!test_bit(HCI_RUNNING, &hdev->flags))
 678                 return;
 679
 680         if (urb->status == 0) {
 681                 for (i = 0; i < urb->number_of_packets; i++) {
 682                         unsigned int offset = urb->iso_frame_desc[i].offset;
 683                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 684
 685                         if (urb->iso_frame_desc[i].status)
 686                                 continue;
 687
 688                         hdev->stat.byte_rx += length;
 689
 690                         if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
 691                                             length) < 0) {
 692                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 693                                 hdev->stat.err_rx++;
 694                         }
 695                 }
 696         } else if (urb->status == -ENOENT) {
 697                 /* Avoid suspend failed when usb_kill_urb */
 698                 return;
 699         }
 700
 701         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 702                 return;
 703
 704         usb_anchor_urb(urb, &data->isoc_anchor);
 705
 706         err = usb_submit_urb(urb, GFP_ATOMIC);
 707         if (err < 0) {
 708                 /* -EPERM: urb is being killed;
 709                  * -ENODEV: device got disconnected */
 710                 if (err != -EPERM && err != -ENODEV)
 711                         BT_ERR("%s urb %p failed to resubmit (%d)",
 712                                hdev->name, urb, -err);
 713                 usb_unanchor_urb(urb);
 714         }
 715 }
 716
 717 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 718 {
 719         int i, offset = 0;
 720
 721         BT_DBG("len %d mtu %d", len, mtu);
 722
 723         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 724                                         i++, offset += mtu, len -= mtu) {
 725                 urb->iso_frame_desc[i].offset = offset;
 726                 urb->iso_frame_desc[i].length = mtu;
 727         }
 728
 729         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 730                 urb->iso_frame_desc[i].offset = offset;
 731                 urb->iso_frame_desc[i].length = len;
 732                 i++;
 733         }
 734
 735         urb->number_of_packets = i;
 736 }
 737
 738 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 739 {
 740         struct btusb_data *data = hci_get_drvdata(hdev);
 741         struct urb *urb;
 742         unsigned char *buf;
 743         unsigned int pipe;
 744         int err, size;
 745
 746         BT_DBG("%s", hdev->name);
 747
 748         if (!data->isoc_rx_ep)
 749                 return -ENODEV;
 750
 751         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 752         if (!urb)
 753                 return -ENOMEM;
 754
 755         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 756                                                 BTUSB_MAX_ISOC_FRAMES;
 757
 758         buf = kmalloc(size, mem_flags);
 759         if (!buf) {
 760                 usb_free_urb(urb);
 761                 return -ENOMEM;
 762         }
 763
 764         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 765
 766         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 767                          hdev, data->isoc_rx_ep->bInterval);
 768
 769         urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
 770
 771         __fill_isoc_descriptor(urb, size,
 772                                le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 773
 774         usb_anchor_urb(urb, &data->isoc_anchor);
 775
 776         err = usb_submit_urb(urb, mem_flags);
 777         if (err < 0) {
 778                 if (err != -EPERM && err != -ENODEV)
 779                         BT_ERR("%s urb %p submission failed (%d)",
 780                                hdev->name, urb, -err);
 781                 usb_unanchor_urb(urb);
 782         }
 783
 784         usb_free_urb(urb);
 785
 786         return err;
 787 }
 788
 789 static void btusb_tx_complete(struct urb *urb)
 790 {
 791         struct sk_buff *skb = urb->context;
 792         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
 793         struct btusb_data *data = hci_get_drvdata(hdev);
 794
 795         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 796                urb->actual_length);
 797
 798         if (!test_bit(HCI_RUNNING, &hdev->flags))
 799                 goto done;
 800
 801         if (!urb->status)
 802                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 803         else
 804                 hdev->stat.err_tx++;
 805
 806 done:
 807         spin_lock(&data->txlock);
 808         data->tx_in_flight--;
 809         spin_unlock(&data->txlock);
 810
 811         kfree(urb->setup_packet);
 812
 813         kfree_skb(skb);
 814 }
 815
 816 static void btusb_isoc_tx_complete(struct urb *urb)
 817 {
 818         struct sk_buff *skb = urb->context;
 819         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
 820
 821         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 822                urb->actual_length);
 823
 824         if (!test_bit(HCI_RUNNING, &hdev->flags))
 825                 goto done;
 826
 827         if (!urb->status)
 828                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 829         else
 830                 hdev->stat.err_tx++;
 831
 832 done:
 833         kfree(urb->setup_packet);
 834
 835         kfree_skb(skb);
 836 }
 837
 838 static int btusb_open(struct hci_dev *hdev)
 839 {
 840         struct btusb_data *data = hci_get_drvdata(hdev);
 841         int err;
 842
 843         BT_DBG("%s", hdev->name);
 844
 845         err = usb_autopm_get_interface(data->intf);
 846         if (err < 0)
 847                 return err;
 848
 849         data->intf->needs_remote_wakeup = 1;
 850
 851         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 852                 goto done;
 853
 854         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 855                 goto done;
 856
 857         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 858         if (err < 0)
 859                 goto failed;
 860
 861         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 862         if (err < 0) {
 863                 usb_kill_anchored_urbs(&data->intr_anchor);
 864                 goto failed;
 865         }
 866
 867         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 868         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 869
 870 done:
 871         usb_autopm_put_interface(data->intf);
 872         return 0;
 873
 874 failed:
 875         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 876         clear_bit(HCI_RUNNING, &hdev->flags);
 877         usb_autopm_put_interface(data->intf);
 878         return err;
 879 }
 880
 881 static void btusb_stop_traffic(struct btusb_data *data)
 882 {
 883         usb_kill_anchored_urbs(&data->intr_anchor);
 884         usb_kill_anchored_urbs(&data->bulk_anchor);
 885         usb_kill_anchored_urbs(&data->isoc_anchor);
 886 }
 887
 888 static int btusb_close(struct hci_dev *hdev)
 889 {
 890         struct btusb_data *data = hci_get_drvdata(hdev);
 891         int err;
 892
 893         BT_DBG("%s", hdev->name);
 894
 895         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 896                 return 0;
 897
 898         cancel_work_sync(&data->work);
 899         cancel_work_sync(&data->waker);
 900
 901         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 902         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 903         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 904
 905         btusb_stop_traffic(data);
 906         btusb_free_frags(data);
 907
 908         err = usb_autopm_get_interface(data->intf);
 909         if (err < 0)
 910                 goto failed;
 911
 912         data->intf->needs_remote_wakeup = 0;
 913         usb_autopm_put_interface(data->intf);
 914
 915 failed:
 916         usb_scuttle_anchored_urbs(&data->deferred);
 917         return 0;
 918 }
 919
 920 static int btusb_flush(struct hci_dev *hdev)
 921 {
 922         struct btusb_data *data = hci_get_drvdata(hdev);
 923
 924         BT_DBG("%s", hdev->name);
 925
 926         usb_kill_anchored_urbs(&data->tx_anchor);
 927         btusb_free_frags(data);
 928
 929         return 0;
 930 }
 931
 932 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
 933 {
 934         struct btusb_data *data = hci_get_drvdata(hdev);
 935         struct usb_ctrlrequest *dr;
 936         struct urb *urb;
 937         unsigned int pipe;
 938
 939         urb = usb_alloc_urb(0, GFP_KERNEL);
 940         if (!urb)
 941                 return ERR_PTR(-ENOMEM);
 942
 943         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
 944         if (!dr) {
 945                 usb_free_urb(urb);
 946                 return ERR_PTR(-ENOMEM);
 947         }
 948
 949         dr->bRequestType = data->cmdreq_type;
 950         dr->bRequest     = 0;
 951         dr->wIndex       = 0;
 952         dr->wValue       = 0;
 953         dr->wLength      = __cpu_to_le16(skb->len);
 954
 955         pipe = usb_sndctrlpipe(data->udev, 0x00);
 956
 957         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
 958                              skb->data, skb->len, btusb_tx_complete, skb);
 959
 960         skb->dev = (void *)hdev;
 961
 962         return urb;
 963 }
 964
 965 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
 966 {
 967         struct btusb_data *data = hci_get_drvdata(hdev);
 968         struct urb *urb;
 969         unsigned int pipe;
 970
 971         if (!data->bulk_tx_ep)
 972                 return ERR_PTR(-ENODEV);
 973
 974         urb = usb_alloc_urb(0, GFP_KERNEL);
 975         if (!urb)
 976                 return ERR_PTR(-ENOMEM);
 977
 978         pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
 979
 980         usb_fill_bulk_urb(urb, data->udev, pipe,
 981                           skb->data, skb->len, btusb_tx_complete, skb);
 982
 983         skb->dev = (void *)hdev;
 984
 985         return urb;
 986 }
 987
 988 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
 989 {
 990         struct btusb_data *data = hci_get_drvdata(hdev);
 991         struct urb *urb;
 992         unsigned int pipe;
 993
 994         if (!data->isoc_tx_ep)
 995                 return ERR_PTR(-ENODEV);
 996
 997         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
 998         if (!urb)
 999                 return ERR_PTR(-ENOMEM);
1000
1001         pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1002
1003         usb_fill_int_urb(urb, data->udev, pipe,
1004                          skb->data, skb->len, btusb_isoc_tx_complete,
1005                          skb, data->isoc_tx_ep->bInterval);
1006
1007         urb->transfer_flags  = URB_ISO_ASAP;
1008
1009         __fill_isoc_descriptor(urb, skb->len,
1010                                le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1011
1012         skb->dev = (void *)hdev;
1013
1014         return urb;
1015 }
1016
1017 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1018 {
1019         struct btusb_data *data = hci_get_drvdata(hdev);
1020         int err;
1021
1022         usb_anchor_urb(urb, &data->tx_anchor);
1023
1024         err = usb_submit_urb(urb, GFP_KERNEL);
1025         if (err < 0) {
1026                 if (err != -EPERM && err != -ENODEV)
1027                         BT_ERR("%s urb %p submission failed (%d)",
1028                                hdev->name, urb, -err);
1029                 kfree(urb->setup_packet);
1030                 usb_unanchor_urb(urb);
1031         } else {
1032                 usb_mark_last_busy(data->udev);
1033         }
1034
1035         usb_free_urb(urb);
1036         return err;
1037 }
1038
1039 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1040 {
1041         struct btusb_data *data = hci_get_drvdata(hdev);
1042         unsigned long flags;
1043         bool suspending;
1044
1045         spin_lock_irqsave(&data->txlock, flags);
1046         suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1047         if (!suspending)
1048                 data->tx_in_flight++;
1049         spin_unlock_irqrestore(&data->txlock, flags);
1050
1051         if (!suspending)
1052                 return submit_tx_urb(hdev, urb);
1053
1054         usb_anchor_urb(urb, &data->deferred);
1055         schedule_work(&data->waker);
1056
1057         usb_free_urb(urb);
1058         return 0;
1059 }
1060
1061 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1062 {
1063         struct urb *urb;
1064
1065         BT_DBG("%s", hdev->name);
1066
1067         if (!test_bit(HCI_RUNNING, &hdev->flags))
1068                 return -EBUSY;
1069
1070         switch (bt_cb(skb)->pkt_type) {
1071         case HCI_COMMAND_PKT:
1072                 urb = alloc_ctrl_urb(hdev, skb);
1073                 if (IS_ERR(urb))
1074                         return PTR_ERR(urb);
1075
1076                 hdev->stat.cmd_tx++;
1077                 return submit_or_queue_tx_urb(hdev, urb);
1078
1079         case HCI_ACLDATA_PKT:
1080                 urb = alloc_bulk_urb(hdev, skb);
1081                 if (IS_ERR(urb))
1082                         return PTR_ERR(urb);
1083
1084                 hdev->stat.acl_tx++;
1085                 return submit_or_queue_tx_urb(hdev, urb);
1086
1087         case HCI_SCODATA_PKT:
1088                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1089                         return -ENODEV;
1090
1091                 urb = alloc_isoc_urb(hdev, skb);
1092                 if (IS_ERR(urb))
1093                         return PTR_ERR(urb);
1094
1095                 hdev->stat.sco_tx++;
1096                 return submit_tx_urb(hdev, urb);
1097         }
1098
1099         return -EILSEQ;
1100 }
1101
1102 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1103 {
1104         struct btusb_data *data = hci_get_drvdata(hdev);
1105
1106         BT_DBG("%s evt %d", hdev->name, evt);
1107
1108         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1109                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1110                 schedule_work(&data->work);
1111         }
1112 }
1113
1114 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1115 {
1116         struct btusb_data *data = hci_get_drvdata(hdev);
1117         struct usb_interface *intf = data->isoc;
1118         struct usb_endpoint_descriptor *ep_desc;
1119         int i, err;
1120
1121         if (!data->isoc)
1122                 return -ENODEV;
1123
1124         err = usb_set_interface(data->udev, 1, altsetting);
1125         if (err < 0) {
1126                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
1127                 return err;
1128         }
1129
1130         data->isoc_altsetting = altsetting;
1131
1132         data->isoc_tx_ep = NULL;
1133         data->isoc_rx_ep = NULL;
1134
1135         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1136                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1137
1138                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1139                         data->isoc_tx_ep = ep_desc;
1140                         continue;
1141                 }
1142
1143                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1144                         data->isoc_rx_ep = ep_desc;
1145                         continue;
1146                 }
1147         }
1148
1149         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1150                 BT_ERR("%s invalid SCO descriptors", hdev->name);
1151                 return -ENODEV;
1152         }
1153
1154         return 0;
1155 }
1156
1157 static void btusb_work(struct work_struct *work)
1158 {
1159         struct btusb_data *data = container_of(work, struct btusb_data, work);
1160         struct hci_dev *hdev = data->hdev;
1161         int new_alts;
1162         int err;
1163
1164         if (data->sco_num > 0) {
1165                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1166                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1167                         if (err < 0) {
1168                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1169                                 usb_kill_anchored_urbs(&data->isoc_anchor);
1170                                 return;
1171                         }
1172
1173                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1174                 }
1175
1176                 if (hdev->voice_setting & 0x0020) {
1177                         static const int alts[3] = { 2, 4, 5 };
1178
1179                         new_alts = alts[data->sco_num - 1];
1180                 } else {
1181                         new_alts = data->sco_num;
1182                 }
1183
1184                 if (data->isoc_altsetting != new_alts) {
1185                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1186                         usb_kill_anchored_urbs(&data->isoc_anchor);
1187
1188                         if (__set_isoc_interface(hdev, new_alts) < 0)
1189                                 return;
1190                 }
1191
1192                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1193                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1194                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1195                         else
1196                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1197                 }
1198         } else {
1199                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1200                 usb_kill_anchored_urbs(&data->isoc_anchor);
1201
1202                 __set_isoc_interface(hdev, 0);
1203                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1204                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1205         }
1206 }
1207
1208 static void btusb_waker(struct work_struct *work)
1209 {
1210         struct btusb_data *data = container_of(work, struct btusb_data, waker);
1211         int err;
1212
1213         err = usb_autopm_get_interface(data->intf);
1214         if (err < 0)
1215                 return;
1216
1217         usb_autopm_put_interface(data->intf);
1218 }
1219
1220 static int btusb_setup_bcm92035(struct hci_dev *hdev)
1221 {
1222         struct sk_buff *skb;
1223         u8 val = 0x00;
1224
1225         BT_DBG("%s", hdev->name);
1226
1227         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1228         if (IS_ERR(skb))
1229                 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
1230         else
1231                 kfree_skb(skb);
1232
1233         return 0;
1234 }
1235
1236 static int btusb_setup_csr(struct hci_dev *hdev)
1237 {
1238         struct hci_rp_read_local_version *rp;
1239         struct sk_buff *skb;
1240         int ret;
1241
1242         BT_DBG("%s", hdev->name);
1243
1244         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1245                              HCI_INIT_TIMEOUT);
1246         if (IS_ERR(skb)) {
1247                 BT_ERR("Reading local version failed (%ld)", -PTR_ERR(skb));
1248                 return -PTR_ERR(skb);
1249         }
1250
1251         rp = (struct hci_rp_read_local_version *)skb->data;
1252
1253         if (!rp->status) {
1254                 if (le16_to_cpu(rp->manufacturer) != 10) {
1255                         /* Clear the reset quirk since this is not an actual
1256                          * early Bluetooth 1.1 device from CSR.
1257                          */
1258                         clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1259
1260                         /* These fake CSR controllers have all a broken
1261                          * stored link key handling and so just disable it.
1262                          */
1263                         set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY,
1264                                 &hdev->quirks);
1265                 }
1266         }
1267
1268         ret = -bt_to_errno(rp->status);
1269
1270         kfree_skb(skb);
1271
1272         return ret;
1273 }
1274
1275 struct intel_version {
1276         u8 status;
1277         u8 hw_platform;
1278         u8 hw_variant;
1279         u8 hw_revision;
1280         u8 fw_variant;
1281         u8 fw_revision;
1282         u8 fw_build_num;
1283         u8 fw_build_ww;
1284         u8 fw_build_yy;
1285         u8 fw_patch_num;
1286 } __packed;
1287
1288 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1289                                                        struct intel_version *ver)
1290 {
1291         const struct firmware *fw;
1292         char fwname[64];
1293         int ret;
1294
1295         snprintf(fwname, sizeof(fwname),
1296                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1297                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
1298                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1299                  ver->fw_build_ww, ver->fw_build_yy);
1300
1301         ret = request_firmware(&fw, fwname, &hdev->dev);
1302         if (ret < 0) {
1303                 if (ret == -EINVAL) {
1304                         BT_ERR("%s Intel firmware file request failed (%d)",
1305                                hdev->name, ret);
1306                         return NULL;
1307                 }
1308
1309                 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1310                        hdev->name, fwname, ret);
1311
1312                 /* If the correct firmware patch file is not found, use the
1313                  * default firmware patch file instead
1314                  */
1315                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1316                          ver->hw_platform, ver->hw_variant);
1317                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1318                         BT_ERR("%s failed to open default Intel fw file: %s",
1319                                hdev->name, fwname);
1320                         return NULL;
1321                 }
1322         }
1323
1324         BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1325
1326         return fw;
1327 }
1328
1329 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1330                                       const struct firmware *fw,
1331                                       const u8 **fw_ptr, int *disable_patch)
1332 {
1333         struct sk_buff *skb;
1334         struct hci_command_hdr *cmd;
1335         const u8 *cmd_param;
1336         struct hci_event_hdr *evt = NULL;
1337         const u8 *evt_param = NULL;
1338         int remain = fw->size - (*fw_ptr - fw->data);
1339
1340         /* The first byte indicates the types of the patch command or event.
1341          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1342          * in the current firmware buffer doesn't start with 0x01 or
1343          * the size of remain buffer is smaller than HCI command header,
1344          * the firmware file is corrupted and it should stop the patching
1345          * process.
1346          */
1347         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1348                 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1349                 return -EINVAL;
1350         }
1351         (*fw_ptr)++;
1352         remain--;
1353
1354         cmd = (struct hci_command_hdr *)(*fw_ptr);
1355         *fw_ptr += sizeof(*cmd);
1356         remain -= sizeof(*cmd);
1357
1358         /* Ensure that the remain firmware data is long enough than the length
1359          * of command parameter. If not, the firmware file is corrupted.
1360          */
1361         if (remain < cmd->plen) {
1362                 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1363                 return -EFAULT;
1364         }
1365
1366         /* If there is a command that loads a patch in the firmware
1367          * file, then enable the patch upon success, otherwise just
1368          * disable the manufacturer mode, for example patch activation
1369          * is not required when the default firmware patch file is used
1370          * because there are no patch data to load.
1371          */
1372         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1373                 *disable_patch = 0;
1374
1375         cmd_param = *fw_ptr;
1376         *fw_ptr += cmd->plen;
1377         remain -= cmd->plen;
1378
1379         /* This reads the expected events when the above command is sent to the
1380          * device. Some vendor commands expects more than one events, for
1381          * example command status event followed by vendor specific event.
1382          * For this case, it only keeps the last expected event. so the command
1383          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1384          * last expected event.
1385          */
1386         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1387                 (*fw_ptr)++;
1388                 remain--;
1389
1390                 evt = (struct hci_event_hdr *)(*fw_ptr);
1391                 *fw_ptr += sizeof(*evt);
1392                 remain -= sizeof(*evt);
1393
1394                 if (remain < evt->plen) {
1395                         BT_ERR("%s Intel fw corrupted: invalid evt len",
1396                                hdev->name);
1397                         return -EFAULT;
1398                 }
1399
1400                 evt_param = *fw_ptr;
1401                 *fw_ptr += evt->plen;
1402                 remain -= evt->plen;
1403         }
1404
1405         /* Every HCI commands in the firmware file has its correspond event.
1406          * If event is not found or remain is smaller than zero, the firmware
1407          * file is corrupted.
1408          */
1409         if (!evt || !evt_param || remain < 0) {
1410                 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1411                 return -EFAULT;
1412         }
1413
1414         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1415                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1416         if (IS_ERR(skb)) {
1417                 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1418                        hdev->name, cmd->opcode, PTR_ERR(skb));
1419                 return PTR_ERR(skb);
1420         }
1421
1422         /* It ensures that the returned event matches the event data read from
1423          * the firmware file. At fist, it checks the length and then
1424          * the contents of the event.
1425          */
1426         if (skb->len != evt->plen) {
1427                 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1428                        le16_to_cpu(cmd->opcode));
1429                 kfree_skb(skb);
1430                 return -EFAULT;
1431         }
1432
1433         if (memcmp(skb->data, evt_param, evt->plen)) {
1434                 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1435                        hdev->name, le16_to_cpu(cmd->opcode));
1436                 kfree_skb(skb);
1437                 return -EFAULT;
1438         }
1439         kfree_skb(skb);
1440
1441         return 0;
1442 }
1443
1444 #define BDADDR_INTEL (&(bdaddr_t) {{0x00, 0x8b, 0x9e, 0x19, 0x03, 0x00}})
1445
1446 static int btusb_check_bdaddr_intel(struct hci_dev *hdev)
1447 {
1448         struct sk_buff *skb;
1449         struct hci_rp_read_bd_addr *rp;
1450
1451         skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
1452                              HCI_INIT_TIMEOUT);
1453         if (IS_ERR(skb)) {
1454                 BT_ERR("%s reading Intel device address failed (%ld)",
1455                        hdev->name, PTR_ERR(skb));
1456                 return PTR_ERR(skb);
1457         }
1458
1459         if (skb->len != sizeof(*rp)) {
1460                 BT_ERR("%s Intel device address length mismatch", hdev->name);
1461                 kfree_skb(skb);
1462                 return -EIO;
1463         }
1464
1465         rp = (struct hci_rp_read_bd_addr *)skb->data;
1466         if (rp->status) {
1467                 BT_ERR("%s Intel device address result failed (%02x)",
1468                        hdev->name, rp->status);
1469                 kfree_skb(skb);
1470                 return -bt_to_errno(rp->status);
1471         }
1472
1473         /* For some Intel based controllers, the default Bluetooth device
1474          * address 00:03:19:9E:8B:00 can be found. These controllers are
1475          * fully operational, but have the danger of duplicate addresses
1476          * and that in turn can cause problems with Bluetooth operation.
1477          */
1478         if (!bacmp(&rp->bdaddr, BDADDR_INTEL)) {
1479                 BT_ERR("%s found Intel default device address (%pMR)",
1480                        hdev->name, &rp->bdaddr);
1481                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
1482         }
1483
1484         kfree_skb(skb);
1485
1486         return 0;
1487 }
1488
1489 static int btusb_setup_intel(struct hci_dev *hdev)
1490 {
1491         struct sk_buff *skb;
1492         const struct firmware *fw;
1493         const u8 *fw_ptr;
1494         int disable_patch;
1495         struct intel_version *ver;
1496
1497         const u8 mfg_enable[] = { 0x01, 0x00 };
1498         const u8 mfg_disable[] = { 0x00, 0x00 };
1499         const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
1500         const u8 mfg_reset_activate[] = { 0x00, 0x02 };
1501
1502         BT_DBG("%s", hdev->name);
1503
1504         /* The controller has a bug with the first HCI command sent to it
1505          * returning number of completed commands as zero. This would stall the
1506          * command processing in the Bluetooth core.
1507          *
1508          * As a workaround, send HCI Reset command first which will reset the
1509          * number of completed commands and allow normal command processing
1510          * from now on.
1511          */
1512         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1513         if (IS_ERR(skb)) {
1514                 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1515                        hdev->name, PTR_ERR(skb));
1516                 return PTR_ERR(skb);
1517         }
1518         kfree_skb(skb);
1519
1520         /* Read Intel specific controller version first to allow selection of
1521          * which firmware file to load.
1522          *
1523          * The returned information are hardware variant and revision plus
1524          * firmware variant, revision and build number.
1525          */
1526         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1527         if (IS_ERR(skb)) {
1528                 BT_ERR("%s reading Intel fw version command failed (%ld)",
1529                        hdev->name, PTR_ERR(skb));
1530                 return PTR_ERR(skb);
1531         }
1532
1533         if (skb->len != sizeof(*ver)) {
1534                 BT_ERR("%s Intel version event length mismatch", hdev->name);
1535                 kfree_skb(skb);
1536                 return -EIO;
1537         }
1538
1539         ver = (struct intel_version *)skb->data;
1540         if (ver->status) {
1541                 BT_ERR("%s Intel fw version event failed (%02x)", hdev->name,
1542                        ver->status);
1543                 kfree_skb(skb);
1544                 return -bt_to_errno(ver->status);
1545         }
1546
1547         BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1548                 hdev->name, ver->hw_platform, ver->hw_variant,
1549                 ver->hw_revision, ver->fw_variant,  ver->fw_revision,
1550                 ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
1551                 ver->fw_patch_num);
1552
1553         /* fw_patch_num indicates the version of patch the device currently
1554          * have. If there is no patch data in the device, it is always 0x00.
1555          * So, if it is other than 0x00, no need to patch the deivce again.
1556          */
1557         if (ver->fw_patch_num) {
1558                 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1559                         hdev->name, ver->fw_patch_num);
1560                 kfree_skb(skb);
1561                 btusb_check_bdaddr_intel(hdev);
1562                 return 0;
1563         }
1564
1565         /* Opens the firmware patch file based on the firmware version read
1566          * from the controller. If it fails to open the matching firmware
1567          * patch file, it tries to open the default firmware patch file.
1568          * If no patch file is found, allow the device to operate without
1569          * a patch.
1570          */
1571         fw = btusb_setup_intel_get_fw(hdev, ver);
1572         if (!fw) {
1573                 kfree_skb(skb);
1574                 btusb_check_bdaddr_intel(hdev);
1575                 return 0;
1576         }
1577         fw_ptr = fw->data;
1578
1579         /* This Intel specific command enables the manufacturer mode of the
1580          * controller.
1581          *
1582          * Only while this mode is enabled, the driver can download the
1583          * firmware patch data and configuration parameters.
1584          */
1585         skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
1586         if (IS_ERR(skb)) {
1587                 BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
1588                        hdev->name, PTR_ERR(skb));
1589                 release_firmware(fw);
1590                 return PTR_ERR(skb);
1591         }
1592
1593         if (skb->data[0]) {
1594                 u8 evt_status = skb->data[0];
1595
1596                 BT_ERR("%s enable Intel manufacturer mode event failed (%02x)",
1597                        hdev->name, evt_status);
1598                 kfree_skb(skb);
1599                 release_firmware(fw);
1600                 return -bt_to_errno(evt_status);
1601         }
1602         kfree_skb(skb);
1603
1604         disable_patch = 1;
1605
1606         /* The firmware data file consists of list of Intel specific HCI
1607          * commands and its expected events. The first byte indicates the
1608          * type of the message, either HCI command or HCI event.
1609          *
1610          * It reads the command and its expected event from the firmware file,
1611          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1612          * the returned event is compared with the event read from the firmware
1613          * file and it will continue until all the messages are downloaded to
1614          * the controller.
1615          *
1616          * Once the firmware patching is completed successfully,
1617          * the manufacturer mode is disabled with reset and activating the
1618          * downloaded patch.
1619          *
1620          * If the firmware patching fails, the manufacturer mode is
1621          * disabled with reset and deactivating the patch.
1622          *
1623          * If the default patch file is used, no reset is done when disabling
1624          * the manufacturer.
1625          */
1626         while (fw->size > fw_ptr - fw->data) {
1627                 int ret;
1628
1629                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1630                                                  &disable_patch);
1631                 if (ret < 0)
1632                         goto exit_mfg_deactivate;
1633         }
1634
1635         release_firmware(fw);
1636
1637         if (disable_patch)
1638                 goto exit_mfg_disable;
1639
1640         /* Patching completed successfully and disable the manufacturer mode
1641          * with reset and activate the downloaded firmware patches.
1642          */
1643         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
1644                              mfg_reset_activate, HCI_INIT_TIMEOUT);
1645         if (IS_ERR(skb)) {
1646                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1647                        hdev->name, PTR_ERR(skb));
1648                 return PTR_ERR(skb);
1649         }
1650         kfree_skb(skb);
1651
1652         BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1653                 hdev->name);
1654
1655         btusb_check_bdaddr_intel(hdev);
1656         return 0;
1657
1658 exit_mfg_disable:
1659         /* Disable the manufacturer mode without reset */
1660         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
1661                              HCI_INIT_TIMEOUT);
1662         if (IS_ERR(skb)) {
1663                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1664                        hdev->name, PTR_ERR(skb));
1665                 return PTR_ERR(skb);
1666         }
1667         kfree_skb(skb);
1668
1669         BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1670
1671         btusb_check_bdaddr_intel(hdev);
1672         return 0;
1673
1674 exit_mfg_deactivate:
1675         release_firmware(fw);
1676
1677         /* Patching failed. Disable the manufacturer mode with reset and
1678          * deactivate the downloaded firmware patches.
1679          */
1680         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
1681                              mfg_reset_deactivate, HCI_INIT_TIMEOUT);
1682         if (IS_ERR(skb)) {
1683                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1684                        hdev->name, PTR_ERR(skb));
1685                 return PTR_ERR(skb);
1686         }
1687         kfree_skb(skb);
1688
1689         BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1690                 hdev->name);
1691
1692         btusb_check_bdaddr_intel(hdev);
1693         return 0;
1694 }
1695
1696 static int btusb_set_bdaddr_intel(struct hci_dev *hdev, const bdaddr_t *bdaddr)
1697 {
1698         struct sk_buff *skb;
1699         long ret;
1700
1701         skb = __hci_cmd_sync(hdev, 0xfc31, 6, bdaddr, HCI_INIT_TIMEOUT);
1702         if (IS_ERR(skb)) {
1703                 ret = PTR_ERR(skb);
1704                 BT_ERR("%s: changing Intel device address failed (%ld)",
1705                        hdev->name, ret);
1706                 return ret;
1707         }
1708         kfree_skb(skb);
1709
1710         return 0;
1711 }
1712
1713 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
1714                                     const bdaddr_t *bdaddr)
1715 {
1716         struct sk_buff *skb;
1717         u8 buf[8];
1718         long ret;
1719
1720         buf[0] = 0xfe;
1721         buf[1] = sizeof(bdaddr_t);
1722         memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
1723
1724         skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
1725         if (IS_ERR(skb)) {
1726                 ret = PTR_ERR(skb);
1727                 BT_ERR("%s: changing Marvell device address failed (%ld)",
1728                        hdev->name, ret);
1729                 return ret;
1730         }
1731         kfree_skb(skb);
1732
1733         return 0;
1734 }
1735
1736 #define BDADDR_BCM20702A0 (&(bdaddr_t) {{0x00, 0xa0, 0x02, 0x70, 0x20, 0x00}})
1737
1738 static int btusb_setup_bcm_patchram(struct hci_dev *hdev)
1739 {
1740         struct btusb_data *data = hci_get_drvdata(hdev);
1741         struct usb_device *udev = data->udev;
1742         char fw_name[64];
1743         const struct firmware *fw;
1744         const u8 *fw_ptr;
1745         size_t fw_size;
1746         const struct hci_command_hdr *cmd;
1747         const u8 *cmd_param;
1748         u16 opcode;
1749         struct sk_buff *skb;
1750         struct hci_rp_read_local_version *ver;
1751         struct hci_rp_read_bd_addr *bda;
1752         long ret;
1753
1754         snprintf(fw_name, sizeof(fw_name), "brcm/%s-%04x-%04x.hcd",
1755                  udev->product ? udev->product : "BCM",
1756                  le16_to_cpu(udev->descriptor.idVendor),
1757                  le16_to_cpu(udev->descriptor.idProduct));
1758
1759         ret = request_firmware(&fw, fw_name, &hdev->dev);
1760         if (ret < 0) {
1761                 BT_INFO("%s: BCM: patch %s not found", hdev->name, fw_name);
1762                 return 0;
1763         }
1764
1765         /* Reset */
1766         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1767         if (IS_ERR(skb)) {
1768                 ret = PTR_ERR(skb);
1769                 BT_ERR("%s: HCI_OP_RESET failed (%ld)", hdev->name, ret);
1770                 goto done;
1771         }
1772         kfree_skb(skb);
1773
1774         /* Read Local Version Info */
1775         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1776                              HCI_INIT_TIMEOUT);
1777         if (IS_ERR(skb)) {
1778                 ret = PTR_ERR(skb);
1779                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION failed (%ld)",
1780                        hdev->name, ret);
1781                 goto done;
1782         }
1783
1784         if (skb->len != sizeof(*ver)) {
1785                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION event length mismatch",
1786                        hdev->name);
1787                 kfree_skb(skb);
1788                 ret = -EIO;
1789                 goto done;
1790         }
1791
1792         ver = (struct hci_rp_read_local_version *)skb->data;
1793         BT_INFO("%s: BCM: patching hci_ver=%02x hci_rev=%04x lmp_ver=%02x "
1794                 "lmp_subver=%04x", hdev->name, ver->hci_ver, ver->hci_rev,
1795                 ver->lmp_ver, ver->lmp_subver);
1796         kfree_skb(skb);
1797
1798         /* Start Download */
1799         skb = __hci_cmd_sync(hdev, 0xfc2e, 0, NULL, HCI_INIT_TIMEOUT);
1800         if (IS_ERR(skb)) {
1801                 ret = PTR_ERR(skb);
1802                 BT_ERR("%s: BCM: Download Minidrv command failed (%ld)",
1803                        hdev->name, ret);
1804                 goto reset_fw;
1805         }
1806         kfree_skb(skb);
1807
1808         /* 50 msec delay after Download Minidrv completes */
1809         msleep(50);
1810
1811         fw_ptr = fw->data;
1812         fw_size = fw->size;
1813
1814         while (fw_size >= sizeof(*cmd)) {
1815                 cmd = (struct hci_command_hdr *)fw_ptr;
1816                 fw_ptr += sizeof(*cmd);
1817                 fw_size -= sizeof(*cmd);
1818
1819                 if (fw_size < cmd->plen) {
1820                         BT_ERR("%s: BCM: patch %s is corrupted",
1821                                hdev->name, fw_name);
1822                         ret = -EINVAL;
1823                         goto reset_fw;
1824                 }
1825
1826                 cmd_param = fw_ptr;
1827                 fw_ptr += cmd->plen;
1828                 fw_size -= cmd->plen;
1829
1830                 opcode = le16_to_cpu(cmd->opcode);
1831
1832                 skb = __hci_cmd_sync(hdev, opcode, cmd->plen, cmd_param,
1833                                      HCI_INIT_TIMEOUT);
1834                 if (IS_ERR(skb)) {
1835                         ret = PTR_ERR(skb);
1836                         BT_ERR("%s: BCM: patch command %04x failed (%ld)",
1837                                hdev->name, opcode, ret);
1838                         goto reset_fw;
1839                 }
1840                 kfree_skb(skb);
1841         }
1842
1843         /* 250 msec delay after Launch Ram completes */
1844         msleep(250);
1845
1846 reset_fw:
1847         /* Reset */
1848         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1849         if (IS_ERR(skb)) {
1850                 ret = PTR_ERR(skb);
1851                 BT_ERR("%s: HCI_OP_RESET failed (%ld)", hdev->name, ret);
1852                 goto done;
1853         }
1854         kfree_skb(skb);
1855
1856         /* Read Local Version Info */
1857         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1858                              HCI_INIT_TIMEOUT);
1859         if (IS_ERR(skb)) {
1860                 ret = PTR_ERR(skb);
1861                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION failed (%ld)",
1862                        hdev->name, ret);
1863                 goto done;
1864         }
1865
1866         if (skb->len != sizeof(*ver)) {
1867                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION event length mismatch",
1868                        hdev->name);
1869                 kfree_skb(skb);
1870                 ret = -EIO;
1871                 goto done;
1872         }
1873
1874         ver = (struct hci_rp_read_local_version *)skb->data;
1875         BT_INFO("%s: BCM: firmware hci_ver=%02x hci_rev=%04x lmp_ver=%02x "
1876                 "lmp_subver=%04x", hdev->name, ver->hci_ver, ver->hci_rev,
1877                 ver->lmp_ver, ver->lmp_subver);
1878         kfree_skb(skb);
1879
1880         /* Read BD Address */
1881         skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
1882                              HCI_INIT_TIMEOUT);
1883         if (IS_ERR(skb)) {
1884                 ret = PTR_ERR(skb);
1885                 BT_ERR("%s: HCI_OP_READ_BD_ADDR failed (%ld)",
1886                        hdev->name, ret);
1887                 goto done;
1888         }
1889
1890         if (skb->len != sizeof(*bda)) {
1891                 BT_ERR("%s: HCI_OP_READ_BD_ADDR event length mismatch",
1892                        hdev->name);
1893                 kfree_skb(skb);
1894                 ret = -EIO;
1895                 goto done;
1896         }
1897
1898         bda = (struct hci_rp_read_bd_addr *)skb->data;
1899         if (bda->status) {
1900                 BT_ERR("%s: HCI_OP_READ_BD_ADDR error status (%02x)",
1901                        hdev->name, bda->status);
1902                 kfree_skb(skb);
1903                 ret = -bt_to_errno(bda->status);
1904                 goto done;
1905         }
1906
1907         /* The address 00:20:70:02:A0:00 indicates a BCM20702A0 controller
1908          * with no configured address.
1909          */
1910         if (!bacmp(&bda->bdaddr, BDADDR_BCM20702A0)) {
1911                 BT_INFO("%s: BCM: using default device address (%pMR)",
1912                         hdev->name, &bda->bdaddr);
1913                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
1914         }
1915
1916         kfree_skb(skb);
1917
1918 done:
1919         release_firmware(fw);
1920
1921         return ret;
1922 }
1923
1924 static int btusb_set_bdaddr_bcm(struct hci_dev *hdev, const bdaddr_t *bdaddr)
1925 {
1926         struct sk_buff *skb;
1927         long ret;
1928
1929         skb = __hci_cmd_sync(hdev, 0xfc01, 6, bdaddr, HCI_INIT_TIMEOUT);
1930         if (IS_ERR(skb)) {
1931                 ret = PTR_ERR(skb);
1932                 BT_ERR("%s: BCM: Change address command failed (%ld)",
1933                        hdev->name, ret);
1934                 return ret;
1935         }
1936         kfree_skb(skb);
1937
1938         return 0;
1939 }
1940
1941 static int btusb_probe(struct usb_interface *intf,
1942                        const struct usb_device_id *id)
1943 {
1944         struct usb_endpoint_descriptor *ep_desc;
1945         struct btusb_data *data;
1946         struct hci_dev *hdev;
1947         int i, err;
1948
1949         BT_DBG("intf %p id %p", intf, id);
1950
1951         /* interface numbers are hardcoded in the spec */
1952         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
1953                 return -ENODEV;
1954
1955         if (!id->driver_info) {
1956                 const struct usb_device_id *match;
1957
1958                 match = usb_match_id(intf, blacklist_table);
1959                 if (match)
1960                         id = match;
1961         }
1962
1963         if (id->driver_info == BTUSB_IGNORE)
1964                 return -ENODEV;
1965
1966         if (id->driver_info & BTUSB_ATH3012) {
1967                 struct usb_device *udev = interface_to_usbdev(intf);
1968
1969                 /* Old firmware would otherwise let ath3k driver load
1970                  * patch and sysconfig files */
1971                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
1972                         return -ENODEV;
1973         }
1974
1975         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
1976         if (!data)
1977                 return -ENOMEM;
1978
1979         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1980                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1981
1982                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
1983                         data->intr_ep = ep_desc;
1984                         continue;
1985                 }
1986
1987                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
1988                         data->bulk_tx_ep = ep_desc;
1989                         continue;
1990                 }
1991
1992                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
1993                         data->bulk_rx_ep = ep_desc;
1994                         continue;
1995                 }
1996         }
1997
1998         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
1999                 return -ENODEV;
2000
2001         data->cmdreq_type = USB_TYPE_CLASS;
2002
2003         data->udev = interface_to_usbdev(intf);
2004         data->intf = intf;
2005
2006         INIT_WORK(&data->work, btusb_work);
2007         INIT_WORK(&data->waker, btusb_waker);
2008         init_usb_anchor(&data->deferred);
2009         init_usb_anchor(&data->tx_anchor);
2010         spin_lock_init(&data->txlock);
2011
2012         init_usb_anchor(&data->intr_anchor);
2013         init_usb_anchor(&data->bulk_anchor);
2014         init_usb_anchor(&data->isoc_anchor);
2015         spin_lock_init(&data->rxlock);
2016
2017         data->recv_bulk = btusb_recv_bulk;
2018
2019         hdev = hci_alloc_dev();
2020         if (!hdev)
2021                 return -ENOMEM;
2022
2023         hdev->bus = HCI_USB;
2024         hci_set_drvdata(hdev, data);
2025
2026         data->hdev = hdev;
2027
2028         SET_HCIDEV_DEV(hdev, &intf->dev);
2029
2030         hdev->open   = btusb_open;
2031         hdev->close  = btusb_close;
2032         hdev->flush  = btusb_flush;
2033         hdev->send   = btusb_send_frame;
2034         hdev->notify = btusb_notify;
2035
2036         if (id->driver_info & BTUSB_BCM92035)
2037                 hdev->setup = btusb_setup_bcm92035;
2038
2039         if (id->driver_info & BTUSB_BCM_PATCHRAM) {
2040                 hdev->setup = btusb_setup_bcm_patchram;
2041                 hdev->set_bdaddr = btusb_set_bdaddr_bcm;
2042                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2043         }
2044
2045         if (id->driver_info & BTUSB_INTEL) {
2046                 hdev->setup = btusb_setup_intel;
2047                 hdev->set_bdaddr = btusb_set_bdaddr_intel;
2048         }
2049
2050         if (id->driver_info & BTUSB_MARVELL)
2051                 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
2052
2053         if (id->driver_info & BTUSB_INTEL_BOOT)
2054                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
2055
2056         /* Interface numbers are hardcoded in the specification */
2057         data->isoc = usb_ifnum_to_if(data->udev, 1);
2058
2059         if (!reset)
2060                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2061
2062         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
2063                 if (!disable_scofix)
2064                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
2065         }
2066
2067         if (id->driver_info & BTUSB_BROKEN_ISOC)
2068                 data->isoc = NULL;
2069
2070         if (id->driver_info & BTUSB_DIGIANSWER) {
2071                 data->cmdreq_type = USB_TYPE_VENDOR;
2072                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2073         }
2074
2075         if (id->driver_info & BTUSB_CSR) {
2076                 struct usb_device *udev = data->udev;
2077                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
2078
2079                 /* Old firmware would otherwise execute USB reset */
2080                 if (bcdDevice < 0x117)
2081                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2082
2083                 /* Fake CSR devices with broken commands */
2084                 if (bcdDevice <= 0x100)
2085                         hdev->setup = btusb_setup_csr;
2086         }
2087
2088         if (id->driver_info & BTUSB_SNIFFER) {
2089                 struct usb_device *udev = data->udev;
2090
2091                 /* New sniffer firmware has crippled HCI interface */
2092                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
2093                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
2094         }
2095
2096         if (id->driver_info & BTUSB_INTEL_BOOT) {
2097                 /* A bug in the bootloader causes that interrupt interface is
2098                  * only enabled after receiving SetInterface(0, AltSetting=0).
2099                  */
2100                 err = usb_set_interface(data->udev, 0, 0);
2101                 if (err < 0) {
2102                         BT_ERR("failed to set interface 0, alt 0 %d", err);
2103                         hci_free_dev(hdev);
2104                         return err;
2105                 }
2106         }
2107
2108         if (data->isoc) {
2109                 err = usb_driver_claim_interface(&btusb_driver,
2110                                                  data->isoc, data);
2111                 if (err < 0) {
2112                         hci_free_dev(hdev);
2113                         return err;
2114                 }
2115         }
2116
2117         err = hci_register_dev(hdev);
2118         if (err < 0) {
2119                 hci_free_dev(hdev);
2120                 return err;
2121         }
2122
2123         usb_set_intfdata(intf, data);
2124
2125         return 0;
2126 }
2127
2128 static void btusb_disconnect(struct usb_interface *intf)
2129 {
2130         struct btusb_data *data = usb_get_intfdata(intf);
2131         struct hci_dev *hdev;
2132
2133         BT_DBG("intf %p", intf);
2134
2135         if (!data)
2136                 return;
2137
2138         hdev = data->hdev;
2139         usb_set_intfdata(data->intf, NULL);
2140
2141         if (data->isoc)
2142                 usb_set_intfdata(data->isoc, NULL);
2143
2144         hci_unregister_dev(hdev);
2145
2146         if (intf == data->isoc)
2147                 usb_driver_release_interface(&btusb_driver, data->intf);
2148         else if (data->isoc)
2149                 usb_driver_release_interface(&btusb_driver, data->isoc);
2150
2151         btusb_free_frags(data);
2152         hci_free_dev(hdev);
2153 }
2154
2155 #ifdef CONFIG_PM
2156 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
2157 {
2158         struct btusb_data *data = usb_get_intfdata(intf);
2159
2160         BT_DBG("intf %p", intf);
2161
2162         if (data->suspend_count++)
2163                 return 0;
2164
2165         spin_lock_irq(&data->txlock);
2166         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
2167                 set_bit(BTUSB_SUSPENDING, &data->flags);
2168                 spin_unlock_irq(&data->txlock);
2169         } else {
2170                 spin_unlock_irq(&data->txlock);
2171                 data->suspend_count--;
2172                 return -EBUSY;
2173         }
2174
2175         cancel_work_sync(&data->work);
2176
2177         btusb_stop_traffic(data);
2178         usb_kill_anchored_urbs(&data->tx_anchor);
2179
2180         return 0;
2181 }
2182
2183 static void play_deferred(struct btusb_data *data)
2184 {
2185         struct urb *urb;
2186         int err;
2187
2188         while ((urb = usb_get_from_anchor(&data->deferred))) {
2189                 err = usb_submit_urb(urb, GFP_ATOMIC);
2190                 if (err < 0)
2191                         break;
2192
2193                 data->tx_in_flight++;
2194         }
2195         usb_scuttle_anchored_urbs(&data->deferred);
2196 }
2197
2198 static int btusb_resume(struct usb_interface *intf)
2199 {
2200         struct btusb_data *data = usb_get_intfdata(intf);
2201         struct hci_dev *hdev = data->hdev;
2202         int err = 0;
2203
2204         BT_DBG("intf %p", intf);
2205
2206         if (--data->suspend_count)
2207                 return 0;
2208
2209         if (!test_bit(HCI_RUNNING, &hdev->flags))
2210                 goto done;
2211
2212         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
2213                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
2214                 if (err < 0) {
2215                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
2216                         goto failed;
2217                 }
2218         }
2219
2220         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
2221                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
2222                 if (err < 0) {
2223                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
2224                         goto failed;
2225                 }
2226
2227                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
2228         }
2229
2230         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
2231                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
2232                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
2233                 else
2234                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
2235         }
2236
2237         spin_lock_irq(&data->txlock);
2238         play_deferred(data);
2239         clear_bit(BTUSB_SUSPENDING, &data->flags);
2240         spin_unlock_irq(&data->txlock);
2241         schedule_work(&data->work);
2242
2243         return 0;
2244
2245 failed:
2246         usb_scuttle_anchored_urbs(&data->deferred);
2247 done:
2248         spin_lock_irq(&data->txlock);
2249         clear_bit(BTUSB_SUSPENDING, &data->flags);
2250         spin_unlock_irq(&data->txlock);
2251
2252         return err;
2253 }
2254 #endif
2255
2256 static struct usb_driver btusb_driver = {
2257         .name           = "btusb",
2258         .probe          = btusb_probe,
2259         .disconnect     = btusb_disconnect,
2260 #ifdef CONFIG_PM
2261         .suspend        = btusb_suspend,
2262         .resume         = btusb_resume,
2263 #endif
2264         .id_table       = btusb_table,
2265         .supports_autosuspend = 1,
2266         .disable_hub_initiated_lpm = 1,
2267 };
2268
2269 module_usb_driver(btusb_driver);
2270
2271 module_param(disable_scofix, bool, 0644);
2272 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
2273
2274 module_param(force_scofix, bool, 0644);
2275 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
2276
2277 module_param(reset, bool, 0644);
2278 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
2279
2280 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
2281 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
2282 MODULE_VERSION(VERSION);
2283 MODULE_LICENSE("GPL");