drivers/bluetooth/btusb.c

   1 /*
   2  *
   3  *  Generic Bluetooth USB driver
   4  *
   5  *  Copyright (C) 2005-2008  Marcel Holtmann <marcel@holtmann.org>
   6  *
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, write to the Free Software
  20  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  *
  22  */
  23
  24 #include <linux/module.h>
  25 #include <linux/usb.h>
  26 #include <linux/firmware.h>
  27
  28 #include <net/bluetooth/bluetooth.h>
  29 #include <net/bluetooth/hci_core.h>
  30
  31 #define VERSION "0.6"
  32
  33 static bool disable_scofix;
  34 static bool force_scofix;
  35
  36 static bool reset = 1;
  37
  38 static struct usb_driver btusb_driver;
  39
  40 #define BTUSB_IGNORE            0x01
  41 #define BTUSB_DIGIANSWER        0x02
  42 #define BTUSB_CSR               0x04
  43 #define BTUSB_SNIFFER           0x08
  44 #define BTUSB_BCM92035          0x10
  45 #define BTUSB_BROKEN_ISOC       0x20
  46 #define BTUSB_WRONG_SCO_MTU     0x40
  47 #define BTUSB_ATH3012           0x80
  48 #define BTUSB_INTEL             0x100
  49 #define BTUSB_INTEL_BOOT        0x200
  50 #define BTUSB_BCM_PATCHRAM      0x400
  51 #define BTUSB_MARVELL           0x800
  52
  53 static const struct usb_device_id btusb_table[] = {
  54         /* Generic Bluetooth USB device */
  55         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  56
  57         /* Apple-specific (Broadcom) devices */
  58         { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01) },
  59
  60         /* MediaTek MT76x0E */
  61         { USB_DEVICE(0x0e8d, 0x763f) },
  62
  63         /* Broadcom SoftSailing reporting vendor specific */
  64         { USB_DEVICE(0x0a5c, 0x21e1) },
  65
  66         /* Apple MacBookPro 7,1 */
  67         { USB_DEVICE(0x05ac, 0x8213) },
  68
  69         /* Apple iMac11,1 */
  70         { USB_DEVICE(0x05ac, 0x8215) },
  71
  72         /* Apple MacBookPro6,2 */
  73         { USB_DEVICE(0x05ac, 0x8218) },
  74
  75         /* Apple MacBookAir3,1, MacBookAir3,2 */
  76         { USB_DEVICE(0x05ac, 0x821b) },
  77
  78         /* Apple MacBookAir4,1 */
  79         { USB_DEVICE(0x05ac, 0x821f) },
  80
  81         /* Apple MacBookPro8,2 */
  82         { USB_DEVICE(0x05ac, 0x821a) },
  83
  84         /* Apple MacMini5,1 */
  85         { USB_DEVICE(0x05ac, 0x8281) },
  86
  87         /* AVM BlueFRITZ! USB v2.0 */
  88         { USB_DEVICE(0x057c, 0x3800) },
  89
  90         /* Bluetooth Ultraport Module from IBM */
  91         { USB_DEVICE(0x04bf, 0x030a) },
  92
  93         /* ALPS Modules with non-standard id */
  94         { USB_DEVICE(0x044e, 0x3001) },
  95         { USB_DEVICE(0x044e, 0x3002) },
  96
  97         /* Ericsson with non-standard id */
  98         { USB_DEVICE(0x0bdb, 0x1002) },
  99
 100         /* Canyon CN-BTU1 with HID interfaces */
 101         { USB_DEVICE(0x0c10, 0x0000) },
 102
 103         /* Broadcom BCM20702A0 */
 104         { USB_DEVICE(0x0489, 0xe042) },
 105         { USB_DEVICE(0x04ca, 0x2003) },
 106         { USB_DEVICE(0x0b05, 0x17b5) },
 107         { USB_DEVICE(0x0b05, 0x17cb) },
 108         { USB_DEVICE(0x413c, 0x8197) },
 109         { USB_DEVICE(0x13d3, 0x3404),
 110           .driver_info = BTUSB_BCM_PATCHRAM },
 111
 112         /* Foxconn - Hon Hai */
 113         { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01) },
 114
 115         /* Broadcom devices with vendor specific id */
 116         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
 117           .driver_info = BTUSB_BCM_PATCHRAM },
 118
 119         /* ASUSTek Computer - Broadcom based */
 120         { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01) },
 121
 122         /* Belkin F8065bf - Broadcom based */
 123         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01) },
 124
 125         /* IMC Networks - Broadcom based */
 126         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01) },
 127
 128         /* Intel Bluetooth USB Bootloader (RAM module) */
 129         { USB_DEVICE(0x8087, 0x0a5a),
 130           .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
 131
 132         { }     /* Terminating entry */
 133 };
 134
 135 MODULE_DEVICE_TABLE(usb, btusb_table);
 136
 137 static const struct usb_device_id blacklist_table[] = {
 138         /* CSR BlueCore devices */
 139         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 140
 141         /* Broadcom BCM2033 without firmware */
 142         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 143
 144         /* Atheros 3011 with sflash firmware */
 145         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 146         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 147         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 148         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 149         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 150         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 151
 152         /* Atheros AR9285 Malbec with sflash firmware */
 153         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 154
 155         /* Atheros 3012 with sflash firmware */
 156         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 157         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 158         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 159         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 160         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 161         { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
 162         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 163         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 164         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 165         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 166         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 167         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 168         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 169         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 170         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 171         { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
 172         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 173         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 174         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 175         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 176         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 177         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
 178         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 179         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 180         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 181         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 182         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 183         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 184         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 185         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 186         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 187         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 188         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
 189
 190         /* Atheros AR5BBU12 with sflash firmware */
 191         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 192
 193         /* Atheros AR5BBU12 with sflash firmware */
 194         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 195         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 196
 197         /* Broadcom BCM2035 */
 198         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 199         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 200         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 201
 202         /* Broadcom BCM2045 */
 203         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 204         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 205
 206         /* IBM/Lenovo ThinkPad with Broadcom chip */
 207         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 208         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 209
 210         /* HP laptop with Broadcom chip */
 211         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 212
 213         /* Dell laptop with Broadcom chip */
 214         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 215
 216         /* Dell Wireless 370 and 410 devices */
 217         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 218         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 219
 220         /* Belkin F8T012 and F8T013 devices */
 221         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 222         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 223
 224         /* Asus WL-BTD202 device */
 225         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 226
 227         /* Kensington Bluetooth USB adapter */
 228         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 229
 230         /* RTX Telecom based adapters with buggy SCO support */
 231         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 232         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 233
 234         /* CONWISE Technology based adapters with buggy SCO support */
 235         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 236
 237         /* Digianswer devices */
 238         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 239         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 240
 241         /* CSR BlueCore Bluetooth Sniffer */
 242         { USB_DEVICE(0x0a12, 0x0002),
 243           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 244
 245         /* Frontline ComProbe Bluetooth Sniffer */
 246         { USB_DEVICE(0x16d3, 0x0002),
 247           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 248
 249         /* Intel Bluetooth device */
 250         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 251         { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
 252
 253         /* Marvell device */
 254         { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
 255         { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
 256
 257         { }     /* Terminating entry */
 258 };
 259
 260 #define BTUSB_MAX_ISOC_FRAMES   10
 261
 262 #define BTUSB_INTR_RUNNING      0
 263 #define BTUSB_BULK_RUNNING      1
 264 #define BTUSB_ISOC_RUNNING      2
 265 #define BTUSB_SUSPENDING        3
 266 #define BTUSB_DID_ISO_RESUME    4
 267
 268 struct btusb_data {
 269         struct hci_dev       *hdev;
 270         struct usb_device    *udev;
 271         struct usb_interface *intf;
 272         struct usb_interface *isoc;
 273
 274         unsigned long flags;
 275
 276         struct work_struct work;
 277         struct work_struct waker;
 278
 279         struct usb_anchor deferred;
 280         struct usb_anchor tx_anchor;
 281         int tx_in_flight;
 282         spinlock_t txlock;
 283
 284         struct usb_anchor intr_anchor;
 285         struct usb_anchor bulk_anchor;
 286         struct usb_anchor isoc_anchor;
 287         spinlock_t rxlock;
 288
 289         struct sk_buff *evt_skb;
 290         struct sk_buff *acl_skb;
 291         struct sk_buff *sco_skb;
 292
 293         struct usb_endpoint_descriptor *intr_ep;
 294         struct usb_endpoint_descriptor *bulk_tx_ep;
 295         struct usb_endpoint_descriptor *bulk_rx_ep;
 296         struct usb_endpoint_descriptor *isoc_tx_ep;
 297         struct usb_endpoint_descriptor *isoc_rx_ep;
 298
 299         __u8 cmdreq_type;
 300
 301         unsigned int sco_num;
 302         int isoc_altsetting;
 303         int suspend_count;
 304
 305         int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
 306 };
 307
 308 static inline void btusb_free_frags(struct btusb_data *data)
 309 {
 310         unsigned long flags;
 311
 312         spin_lock_irqsave(&data->rxlock, flags);
 313
 314         kfree_skb(data->evt_skb);
 315         data->evt_skb = NULL;
 316
 317         kfree_skb(data->acl_skb);
 318         data->acl_skb = NULL;
 319
 320         kfree_skb(data->sco_skb);
 321         data->sco_skb = NULL;
 322
 323         spin_unlock_irqrestore(&data->rxlock, flags);
 324 }
 325
 326 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
 327 {
 328         struct sk_buff *skb;
 329         int err = 0;
 330
 331         spin_lock(&data->rxlock);
 332         skb = data->evt_skb;
 333
 334         while (count) {
 335                 int len;
 336
 337                 if (!skb) {
 338                         skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
 339                         if (!skb) {
 340                                 err = -ENOMEM;
 341                                 break;
 342                         }
 343
 344                         bt_cb(skb)->pkt_type = HCI_EVENT_PKT;
 345                         bt_cb(skb)->expect = HCI_EVENT_HDR_SIZE;
 346                 }
 347
 348                 len = min_t(uint, bt_cb(skb)->expect, count);
 349                 memcpy(skb_put(skb, len), buffer, len);
 350
 351                 count -= len;
 352                 buffer += len;
 353                 bt_cb(skb)->expect -= len;
 354
 355                 if (skb->len == HCI_EVENT_HDR_SIZE) {
 356                         /* Complete event header */
 357                         bt_cb(skb)->expect = hci_event_hdr(skb)->plen;
 358
 359                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 360                                 kfree_skb(skb);
 361                                 skb = NULL;
 362
 363                                 err = -EILSEQ;
 364                                 break;
 365                         }
 366                 }
 367
 368                 if (bt_cb(skb)->expect == 0) {
 369                         /* Complete frame */
 370                         hci_recv_frame(data->hdev, skb);
 371                         skb = NULL;
 372                 }
 373         }
 374
 375         data->evt_skb = skb;
 376         spin_unlock(&data->rxlock);
 377
 378         return err;
 379 }
 380
 381 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
 382 {
 383         struct sk_buff *skb;
 384         int err = 0;
 385
 386         spin_lock(&data->rxlock);
 387         skb = data->acl_skb;
 388
 389         while (count) {
 390                 int len;
 391
 392                 if (!skb) {
 393                         skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
 394                         if (!skb) {
 395                                 err = -ENOMEM;
 396                                 break;
 397                         }
 398
 399                         bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT;
 400                         bt_cb(skb)->expect = HCI_ACL_HDR_SIZE;
 401                 }
 402
 403                 len = min_t(uint, bt_cb(skb)->expect, count);
 404                 memcpy(skb_put(skb, len), buffer, len);
 405
 406                 count -= len;
 407                 buffer += len;
 408                 bt_cb(skb)->expect -= len;
 409
 410                 if (skb->len == HCI_ACL_HDR_SIZE) {
 411                         __le16 dlen = hci_acl_hdr(skb)->dlen;
 412
 413                         /* Complete ACL header */
 414                         bt_cb(skb)->expect = __le16_to_cpu(dlen);
 415
 416                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 417                                 kfree_skb(skb);
 418                                 skb = NULL;
 419
 420                                 err = -EILSEQ;
 421                                 break;
 422                         }
 423                 }
 424
 425                 if (bt_cb(skb)->expect == 0) {
 426                         /* Complete frame */
 427                         hci_recv_frame(data->hdev, skb);
 428                         skb = NULL;
 429                 }
 430         }
 431
 432         data->acl_skb = skb;
 433         spin_unlock(&data->rxlock);
 434
 435         return err;
 436 }
 437
 438 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
 439 {
 440         struct sk_buff *skb;
 441         int err = 0;
 442
 443         spin_lock(&data->rxlock);
 444         skb = data->sco_skb;
 445
 446         while (count) {
 447                 int len;
 448
 449                 if (!skb) {
 450                         skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
 451                         if (!skb) {
 452                                 err = -ENOMEM;
 453                                 break;
 454                         }
 455
 456                         bt_cb(skb)->pkt_type = HCI_SCODATA_PKT;
 457                         bt_cb(skb)->expect = HCI_SCO_HDR_SIZE;
 458                 }
 459
 460                 len = min_t(uint, bt_cb(skb)->expect, count);
 461                 memcpy(skb_put(skb, len), buffer, len);
 462
 463                 count -= len;
 464                 buffer += len;
 465                 bt_cb(skb)->expect -= len;
 466
 467                 if (skb->len == HCI_SCO_HDR_SIZE) {
 468                         /* Complete SCO header */
 469                         bt_cb(skb)->expect = hci_sco_hdr(skb)->dlen;
 470
 471                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 472                                 kfree_skb(skb);
 473                                 skb = NULL;
 474
 475                                 err = -EILSEQ;
 476                                 break;
 477                         }
 478                 }
 479
 480                 if (bt_cb(skb)->expect == 0) {
 481                         /* Complete frame */
 482                         hci_recv_frame(data->hdev, skb);
 483                         skb = NULL;
 484                 }
 485         }
 486
 487         data->sco_skb = skb;
 488         spin_unlock(&data->rxlock);
 489
 490         return err;
 491 }
 492
 493 static void btusb_intr_complete(struct urb *urb)
 494 {
 495         struct hci_dev *hdev = urb->context;
 496         struct btusb_data *data = hci_get_drvdata(hdev);
 497         int err;
 498
 499         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 500                urb->actual_length);
 501
 502         if (!test_bit(HCI_RUNNING, &hdev->flags))
 503                 return;
 504
 505         if (urb->status == 0) {
 506                 hdev->stat.byte_rx += urb->actual_length;
 507
 508                 if (btusb_recv_intr(data, urb->transfer_buffer,
 509                                     urb->actual_length) < 0) {
 510                         BT_ERR("%s corrupted event packet", hdev->name);
 511                         hdev->stat.err_rx++;
 512                 }
 513         } else if (urb->status == -ENOENT) {
 514                 /* Avoid suspend failed when usb_kill_urb */
 515                 return;
 516         }
 517
 518         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 519                 return;
 520
 521         usb_mark_last_busy(data->udev);
 522         usb_anchor_urb(urb, &data->intr_anchor);
 523
 524         err = usb_submit_urb(urb, GFP_ATOMIC);
 525         if (err < 0) {
 526                 /* -EPERM: urb is being killed;
 527                  * -ENODEV: device got disconnected */
 528                 if (err != -EPERM && err != -ENODEV)
 529                         BT_ERR("%s urb %p failed to resubmit (%d)",
 530                                hdev->name, urb, -err);
 531                 usb_unanchor_urb(urb);
 532         }
 533 }
 534
 535 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 536 {
 537         struct btusb_data *data = hci_get_drvdata(hdev);
 538         struct urb *urb;
 539         unsigned char *buf;
 540         unsigned int pipe;
 541         int err, size;
 542
 543         BT_DBG("%s", hdev->name);
 544
 545         if (!data->intr_ep)
 546                 return -ENODEV;
 547
 548         urb = usb_alloc_urb(0, mem_flags);
 549         if (!urb)
 550                 return -ENOMEM;
 551
 552         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 553
 554         buf = kmalloc(size, mem_flags);
 555         if (!buf) {
 556                 usb_free_urb(urb);
 557                 return -ENOMEM;
 558         }
 559
 560         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 561
 562         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 563                          btusb_intr_complete, hdev, data->intr_ep->bInterval);
 564
 565         urb->transfer_flags |= URB_FREE_BUFFER;
 566
 567         usb_anchor_urb(urb, &data->intr_anchor);
 568
 569         err = usb_submit_urb(urb, mem_flags);
 570         if (err < 0) {
 571                 if (err != -EPERM && err != -ENODEV)
 572                         BT_ERR("%s urb %p submission failed (%d)",
 573                                hdev->name, urb, -err);
 574                 usb_unanchor_urb(urb);
 575         }
 576
 577         usb_free_urb(urb);
 578
 579         return err;
 580 }
 581
 582 static void btusb_bulk_complete(struct urb *urb)
 583 {
 584         struct hci_dev *hdev = urb->context;
 585         struct btusb_data *data = hci_get_drvdata(hdev);
 586         int err;
 587
 588         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 589                urb->actual_length);
 590
 591         if (!test_bit(HCI_RUNNING, &hdev->flags))
 592                 return;
 593
 594         if (urb->status == 0) {
 595                 hdev->stat.byte_rx += urb->actual_length;
 596
 597                 if (data->recv_bulk(data, urb->transfer_buffer,
 598                                     urb->actual_length) < 0) {
 599                         BT_ERR("%s corrupted ACL packet", hdev->name);
 600                         hdev->stat.err_rx++;
 601                 }
 602         } else if (urb->status == -ENOENT) {
 603                 /* Avoid suspend failed when usb_kill_urb */
 604                 return;
 605         }
 606
 607         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 608                 return;
 609
 610         usb_anchor_urb(urb, &data->bulk_anchor);
 611         usb_mark_last_busy(data->udev);
 612
 613         err = usb_submit_urb(urb, GFP_ATOMIC);
 614         if (err < 0) {
 615                 /* -EPERM: urb is being killed;
 616                  * -ENODEV: device got disconnected */
 617                 if (err != -EPERM && err != -ENODEV)
 618                         BT_ERR("%s urb %p failed to resubmit (%d)",
 619                                hdev->name, urb, -err);
 620                 usb_unanchor_urb(urb);
 621         }
 622 }
 623
 624 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 625 {
 626         struct btusb_data *data = hci_get_drvdata(hdev);
 627         struct urb *urb;
 628         unsigned char *buf;
 629         unsigned int pipe;
 630         int err, size = HCI_MAX_FRAME_SIZE;
 631
 632         BT_DBG("%s", hdev->name);
 633
 634         if (!data->bulk_rx_ep)
 635                 return -ENODEV;
 636
 637         urb = usb_alloc_urb(0, mem_flags);
 638         if (!urb)
 639                 return -ENOMEM;
 640
 641         buf = kmalloc(size, mem_flags);
 642         if (!buf) {
 643                 usb_free_urb(urb);
 644                 return -ENOMEM;
 645         }
 646
 647         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 648
 649         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
 650                           btusb_bulk_complete, hdev);
 651
 652         urb->transfer_flags |= URB_FREE_BUFFER;
 653
 654         usb_mark_last_busy(data->udev);
 655         usb_anchor_urb(urb, &data->bulk_anchor);
 656
 657         err = usb_submit_urb(urb, mem_flags);
 658         if (err < 0) {
 659                 if (err != -EPERM && err != -ENODEV)
 660                         BT_ERR("%s urb %p submission failed (%d)",
 661                                hdev->name, urb, -err);
 662                 usb_unanchor_urb(urb);
 663         }
 664
 665         usb_free_urb(urb);
 666
 667         return err;
 668 }
 669
 670 static void btusb_isoc_complete(struct urb *urb)
 671 {
 672         struct hci_dev *hdev = urb->context;
 673         struct btusb_data *data = hci_get_drvdata(hdev);
 674         int i, err;
 675
 676         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 677                urb->actual_length);
 678
 679         if (!test_bit(HCI_RUNNING, &hdev->flags))
 680                 return;
 681
 682         if (urb->status == 0) {
 683                 for (i = 0; i < urb->number_of_packets; i++) {
 684                         unsigned int offset = urb->iso_frame_desc[i].offset;
 685                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 686
 687                         if (urb->iso_frame_desc[i].status)
 688                                 continue;
 689
 690                         hdev->stat.byte_rx += length;
 691
 692                         if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
 693                                             length) < 0) {
 694                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 695                                 hdev->stat.err_rx++;
 696                         }
 697                 }
 698         } else if (urb->status == -ENOENT) {
 699                 /* Avoid suspend failed when usb_kill_urb */
 700                 return;
 701         }
 702
 703         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 704                 return;
 705
 706         usb_anchor_urb(urb, &data->isoc_anchor);
 707
 708         err = usb_submit_urb(urb, GFP_ATOMIC);
 709         if (err < 0) {
 710                 /* -EPERM: urb is being killed;
 711                  * -ENODEV: device got disconnected */
 712                 if (err != -EPERM && err != -ENODEV)
 713                         BT_ERR("%s urb %p failed to resubmit (%d)",
 714                                hdev->name, urb, -err);
 715                 usb_unanchor_urb(urb);
 716         }
 717 }
 718
 719 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 720 {
 721         int i, offset = 0;
 722
 723         BT_DBG("len %d mtu %d", len, mtu);
 724
 725         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 726                                         i++, offset += mtu, len -= mtu) {
 727                 urb->iso_frame_desc[i].offset = offset;
 728                 urb->iso_frame_desc[i].length = mtu;
 729         }
 730
 731         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 732                 urb->iso_frame_desc[i].offset = offset;
 733                 urb->iso_frame_desc[i].length = len;
 734                 i++;
 735         }
 736
 737         urb->number_of_packets = i;
 738 }
 739
 740 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 741 {
 742         struct btusb_data *data = hci_get_drvdata(hdev);
 743         struct urb *urb;
 744         unsigned char *buf;
 745         unsigned int pipe;
 746         int err, size;
 747
 748         BT_DBG("%s", hdev->name);
 749
 750         if (!data->isoc_rx_ep)
 751                 return -ENODEV;
 752
 753         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 754         if (!urb)
 755                 return -ENOMEM;
 756
 757         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 758                                                 BTUSB_MAX_ISOC_FRAMES;
 759
 760         buf = kmalloc(size, mem_flags);
 761         if (!buf) {
 762                 usb_free_urb(urb);
 763                 return -ENOMEM;
 764         }
 765
 766         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 767
 768         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 769                          hdev, data->isoc_rx_ep->bInterval);
 770
 771         urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
 772
 773         __fill_isoc_descriptor(urb, size,
 774                                le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 775
 776         usb_anchor_urb(urb, &data->isoc_anchor);
 777
 778         err = usb_submit_urb(urb, mem_flags);
 779         if (err < 0) {
 780                 if (err != -EPERM && err != -ENODEV)
 781                         BT_ERR("%s urb %p submission failed (%d)",
 782                                hdev->name, urb, -err);
 783                 usb_unanchor_urb(urb);
 784         }
 785
 786         usb_free_urb(urb);
 787
 788         return err;
 789 }
 790
 791 static void btusb_tx_complete(struct urb *urb)
 792 {
 793         struct sk_buff *skb = urb->context;
 794         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
 795         struct btusb_data *data = hci_get_drvdata(hdev);
 796
 797         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 798                urb->actual_length);
 799
 800         if (!test_bit(HCI_RUNNING, &hdev->flags))
 801                 goto done;
 802
 803         if (!urb->status)
 804                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 805         else
 806                 hdev->stat.err_tx++;
 807
 808 done:
 809         spin_lock(&data->txlock);
 810         data->tx_in_flight--;
 811         spin_unlock(&data->txlock);
 812
 813         kfree(urb->setup_packet);
 814
 815         kfree_skb(skb);
 816 }
 817
 818 static void btusb_isoc_tx_complete(struct urb *urb)
 819 {
 820         struct sk_buff *skb = urb->context;
 821         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
 822
 823         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 824                urb->actual_length);
 825
 826         if (!test_bit(HCI_RUNNING, &hdev->flags))
 827                 goto done;
 828
 829         if (!urb->status)
 830                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 831         else
 832                 hdev->stat.err_tx++;
 833
 834 done:
 835         kfree(urb->setup_packet);
 836
 837         kfree_skb(skb);
 838 }
 839
 840 static int btusb_open(struct hci_dev *hdev)
 841 {
 842         struct btusb_data *data = hci_get_drvdata(hdev);
 843         int err;
 844
 845         BT_DBG("%s", hdev->name);
 846
 847         err = usb_autopm_get_interface(data->intf);
 848         if (err < 0)
 849                 return err;
 850
 851         data->intf->needs_remote_wakeup = 1;
 852
 853         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 854                 goto done;
 855
 856         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 857                 goto done;
 858
 859         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 860         if (err < 0)
 861                 goto failed;
 862
 863         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 864         if (err < 0) {
 865                 usb_kill_anchored_urbs(&data->intr_anchor);
 866                 goto failed;
 867         }
 868
 869         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 870         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 871
 872 done:
 873         usb_autopm_put_interface(data->intf);
 874         return 0;
 875
 876 failed:
 877         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 878         clear_bit(HCI_RUNNING, &hdev->flags);
 879         usb_autopm_put_interface(data->intf);
 880         return err;
 881 }
 882
 883 static void btusb_stop_traffic(struct btusb_data *data)
 884 {
 885         usb_kill_anchored_urbs(&data->intr_anchor);
 886         usb_kill_anchored_urbs(&data->bulk_anchor);
 887         usb_kill_anchored_urbs(&data->isoc_anchor);
 888 }
 889
 890 static int btusb_close(struct hci_dev *hdev)
 891 {
 892         struct btusb_data *data = hci_get_drvdata(hdev);
 893         int err;
 894
 895         BT_DBG("%s", hdev->name);
 896
 897         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 898                 return 0;
 899
 900         cancel_work_sync(&data->work);
 901         cancel_work_sync(&data->waker);
 902
 903         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 904         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 905         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 906
 907         btusb_stop_traffic(data);
 908         btusb_free_frags(data);
 909
 910         err = usb_autopm_get_interface(data->intf);
 911         if (err < 0)
 912                 goto failed;
 913
 914         data->intf->needs_remote_wakeup = 0;
 915         usb_autopm_put_interface(data->intf);
 916
 917 failed:
 918         usb_scuttle_anchored_urbs(&data->deferred);
 919         return 0;
 920 }
 921
 922 static int btusb_flush(struct hci_dev *hdev)
 923 {
 924         struct btusb_data *data = hci_get_drvdata(hdev);
 925
 926         BT_DBG("%s", hdev->name);
 927
 928         usb_kill_anchored_urbs(&data->tx_anchor);
 929         btusb_free_frags(data);
 930
 931         return 0;
 932 }
 933
 934 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
 935 {
 936         struct btusb_data *data = hci_get_drvdata(hdev);
 937         struct usb_ctrlrequest *dr;
 938         struct urb *urb;
 939         unsigned int pipe;
 940
 941         urb = usb_alloc_urb(0, GFP_KERNEL);
 942         if (!urb)
 943                 return ERR_PTR(-ENOMEM);
 944
 945         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
 946         if (!dr) {
 947                 usb_free_urb(urb);
 948                 return ERR_PTR(-ENOMEM);
 949         }
 950
 951         dr->bRequestType = data->cmdreq_type;
 952         dr->bRequest     = 0;
 953         dr->wIndex       = 0;
 954         dr->wValue       = 0;
 955         dr->wLength      = __cpu_to_le16(skb->len);
 956
 957         pipe = usb_sndctrlpipe(data->udev, 0x00);
 958
 959         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
 960                              skb->data, skb->len, btusb_tx_complete, skb);
 961
 962         skb->dev = (void *)hdev;
 963
 964         return urb;
 965 }
 966
 967 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
 968 {
 969         struct btusb_data *data = hci_get_drvdata(hdev);
 970         struct urb *urb;
 971         unsigned int pipe;
 972
 973         if (!data->bulk_tx_ep)
 974                 return ERR_PTR(-ENODEV);
 975
 976         urb = usb_alloc_urb(0, GFP_KERNEL);
 977         if (!urb)
 978                 return ERR_PTR(-ENOMEM);
 979
 980         pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
 981
 982         usb_fill_bulk_urb(urb, data->udev, pipe,
 983                           skb->data, skb->len, btusb_tx_complete, skb);
 984
 985         skb->dev = (void *)hdev;
 986
 987         return urb;
 988 }
 989
 990 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
 991 {
 992         struct btusb_data *data = hci_get_drvdata(hdev);
 993         struct urb *urb;
 994         unsigned int pipe;
 995
 996         if (!data->isoc_tx_ep)
 997                 return ERR_PTR(-ENODEV);
 998
 999         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1000         if (!urb)
1001                 return ERR_PTR(-ENOMEM);
1002
1003         pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1004
1005         usb_fill_int_urb(urb, data->udev, pipe,
1006                          skb->data, skb->len, btusb_isoc_tx_complete,
1007                          skb, data->isoc_tx_ep->bInterval);
1008
1009         urb->transfer_flags  = URB_ISO_ASAP;
1010
1011         __fill_isoc_descriptor(urb, skb->len,
1012                                le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1013
1014         skb->dev = (void *)hdev;
1015
1016         return urb;
1017 }
1018
1019 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1020 {
1021         struct btusb_data *data = hci_get_drvdata(hdev);
1022         int err;
1023
1024         usb_anchor_urb(urb, &data->tx_anchor);
1025
1026         err = usb_submit_urb(urb, GFP_KERNEL);
1027         if (err < 0) {
1028                 if (err != -EPERM && err != -ENODEV)
1029                         BT_ERR("%s urb %p submission failed (%d)",
1030                                hdev->name, urb, -err);
1031                 kfree(urb->setup_packet);
1032                 usb_unanchor_urb(urb);
1033         } else {
1034                 usb_mark_last_busy(data->udev);
1035         }
1036
1037         usb_free_urb(urb);
1038         return err;
1039 }
1040
1041 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1042 {
1043         struct btusb_data *data = hci_get_drvdata(hdev);
1044         unsigned long flags;
1045         bool suspending;
1046
1047         spin_lock_irqsave(&data->txlock, flags);
1048         suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1049         if (!suspending)
1050                 data->tx_in_flight++;
1051         spin_unlock_irqrestore(&data->txlock, flags);
1052
1053         if (!suspending)
1054                 return submit_tx_urb(hdev, urb);
1055
1056         usb_anchor_urb(urb, &data->deferred);
1057         schedule_work(&data->waker);
1058
1059         usb_free_urb(urb);
1060         return 0;
1061 }
1062
1063 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1064 {
1065         struct urb *urb;
1066
1067         BT_DBG("%s", hdev->name);
1068
1069         if (!test_bit(HCI_RUNNING, &hdev->flags))
1070                 return -EBUSY;
1071
1072         switch (bt_cb(skb)->pkt_type) {
1073         case HCI_COMMAND_PKT:
1074                 urb = alloc_ctrl_urb(hdev, skb);
1075                 if (IS_ERR(urb))
1076                         return PTR_ERR(urb);
1077
1078                 hdev->stat.cmd_tx++;
1079                 return submit_or_queue_tx_urb(hdev, urb);
1080
1081         case HCI_ACLDATA_PKT:
1082                 urb = alloc_bulk_urb(hdev, skb);
1083                 if (IS_ERR(urb))
1084                         return PTR_ERR(urb);
1085
1086                 hdev->stat.acl_tx++;
1087                 return submit_or_queue_tx_urb(hdev, urb);
1088
1089         case HCI_SCODATA_PKT:
1090                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1091                         return -ENODEV;
1092
1093                 urb = alloc_isoc_urb(hdev, skb);
1094                 if (IS_ERR(urb))
1095                         return PTR_ERR(urb);
1096
1097                 hdev->stat.sco_tx++;
1098                 return submit_tx_urb(hdev, urb);
1099         }
1100
1101         return -EILSEQ;
1102 }
1103
1104 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1105 {
1106         struct btusb_data *data = hci_get_drvdata(hdev);
1107
1108         BT_DBG("%s evt %d", hdev->name, evt);
1109
1110         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1111                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1112                 schedule_work(&data->work);
1113         }
1114 }
1115
1116 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1117 {
1118         struct btusb_data *data = hci_get_drvdata(hdev);
1119         struct usb_interface *intf = data->isoc;
1120         struct usb_endpoint_descriptor *ep_desc;
1121         int i, err;
1122
1123         if (!data->isoc)
1124                 return -ENODEV;
1125
1126         err = usb_set_interface(data->udev, 1, altsetting);
1127         if (err < 0) {
1128                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
1129                 return err;
1130         }
1131
1132         data->isoc_altsetting = altsetting;
1133
1134         data->isoc_tx_ep = NULL;
1135         data->isoc_rx_ep = NULL;
1136
1137         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1138                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1139
1140                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1141                         data->isoc_tx_ep = ep_desc;
1142                         continue;
1143                 }
1144
1145                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1146                         data->isoc_rx_ep = ep_desc;
1147                         continue;
1148                 }
1149         }
1150
1151         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1152                 BT_ERR("%s invalid SCO descriptors", hdev->name);
1153                 return -ENODEV;
1154         }
1155
1156         return 0;
1157 }
1158
1159 static void btusb_work(struct work_struct *work)
1160 {
1161         struct btusb_data *data = container_of(work, struct btusb_data, work);
1162         struct hci_dev *hdev = data->hdev;
1163         int new_alts;
1164         int err;
1165
1166         if (data->sco_num > 0) {
1167                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1168                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1169                         if (err < 0) {
1170                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1171                                 usb_kill_anchored_urbs(&data->isoc_anchor);
1172                                 return;
1173                         }
1174
1175                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1176                 }
1177
1178                 if (hdev->voice_setting & 0x0020) {
1179                         static const int alts[3] = { 2, 4, 5 };
1180
1181                         new_alts = alts[data->sco_num - 1];
1182                 } else {
1183                         new_alts = data->sco_num;
1184                 }
1185
1186                 if (data->isoc_altsetting != new_alts) {
1187                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1188                         usb_kill_anchored_urbs(&data->isoc_anchor);
1189
1190                         if (__set_isoc_interface(hdev, new_alts) < 0)
1191                                 return;
1192                 }
1193
1194                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1195                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1196                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1197                         else
1198                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1199                 }
1200         } else {
1201                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1202                 usb_kill_anchored_urbs(&data->isoc_anchor);
1203
1204                 __set_isoc_interface(hdev, 0);
1205                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1206                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1207         }
1208 }
1209
1210 static void btusb_waker(struct work_struct *work)
1211 {
1212         struct btusb_data *data = container_of(work, struct btusb_data, waker);
1213         int err;
1214
1215         err = usb_autopm_get_interface(data->intf);
1216         if (err < 0)
1217                 return;
1218
1219         usb_autopm_put_interface(data->intf);
1220 }
1221
1222 static int btusb_setup_bcm92035(struct hci_dev *hdev)
1223 {
1224         struct sk_buff *skb;
1225         u8 val = 0x00;
1226
1227         BT_DBG("%s", hdev->name);
1228
1229         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1230         if (IS_ERR(skb))
1231                 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
1232         else
1233                 kfree_skb(skb);
1234
1235         return 0;
1236 }
1237
1238 static int btusb_setup_csr(struct hci_dev *hdev)
1239 {
1240         struct hci_rp_read_local_version *rp;
1241         struct sk_buff *skb;
1242         int ret;
1243
1244         BT_DBG("%s", hdev->name);
1245
1246         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1247                              HCI_INIT_TIMEOUT);
1248         if (IS_ERR(skb)) {
1249                 BT_ERR("Reading local version failed (%ld)", -PTR_ERR(skb));
1250                 return -PTR_ERR(skb);
1251         }
1252
1253         rp = (struct hci_rp_read_local_version *)skb->data;
1254
1255         if (!rp->status) {
1256                 if (le16_to_cpu(rp->manufacturer) != 10) {
1257                         /* Clear the reset quirk since this is not an actual
1258                          * early Bluetooth 1.1 device from CSR.
1259                          */
1260                         clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1261
1262                         /* These fake CSR controllers have all a broken
1263                          * stored link key handling and so just disable it.
1264                          */
1265                         set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY,
1266                                 &hdev->quirks);
1267                 }
1268         }
1269
1270         ret = -bt_to_errno(rp->status);
1271
1272         kfree_skb(skb);
1273
1274         return ret;
1275 }
1276
1277 struct intel_version {
1278         u8 status;
1279         u8 hw_platform;
1280         u8 hw_variant;
1281         u8 hw_revision;
1282         u8 fw_variant;
1283         u8 fw_revision;
1284         u8 fw_build_num;
1285         u8 fw_build_ww;
1286         u8 fw_build_yy;
1287         u8 fw_patch_num;
1288 } __packed;
1289
1290 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1291                                                        struct intel_version *ver)
1292 {
1293         const struct firmware *fw;
1294         char fwname[64];
1295         int ret;
1296
1297         snprintf(fwname, sizeof(fwname),
1298                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1299                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
1300                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1301                  ver->fw_build_ww, ver->fw_build_yy);
1302
1303         ret = request_firmware(&fw, fwname, &hdev->dev);
1304         if (ret < 0) {
1305                 if (ret == -EINVAL) {
1306                         BT_ERR("%s Intel firmware file request failed (%d)",
1307                                hdev->name, ret);
1308                         return NULL;
1309                 }
1310
1311                 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1312                        hdev->name, fwname, ret);
1313
1314                 /* If the correct firmware patch file is not found, use the
1315                  * default firmware patch file instead
1316                  */
1317                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1318                          ver->hw_platform, ver->hw_variant);
1319                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1320                         BT_ERR("%s failed to open default Intel fw file: %s",
1321                                hdev->name, fwname);
1322                         return NULL;
1323                 }
1324         }
1325
1326         BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1327
1328         return fw;
1329 }
1330
1331 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1332                                       const struct firmware *fw,
1333                                       const u8 **fw_ptr, int *disable_patch)
1334 {
1335         struct sk_buff *skb;
1336         struct hci_command_hdr *cmd;
1337         const u8 *cmd_param;
1338         struct hci_event_hdr *evt = NULL;
1339         const u8 *evt_param = NULL;
1340         int remain = fw->size - (*fw_ptr - fw->data);
1341
1342         /* The first byte indicates the types of the patch command or event.
1343          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1344          * in the current firmware buffer doesn't start with 0x01 or
1345          * the size of remain buffer is smaller than HCI command header,
1346          * the firmware file is corrupted and it should stop the patching
1347          * process.
1348          */
1349         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1350                 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1351                 return -EINVAL;
1352         }
1353         (*fw_ptr)++;
1354         remain--;
1355
1356         cmd = (struct hci_command_hdr *)(*fw_ptr);
1357         *fw_ptr += sizeof(*cmd);
1358         remain -= sizeof(*cmd);
1359
1360         /* Ensure that the remain firmware data is long enough than the length
1361          * of command parameter. If not, the firmware file is corrupted.
1362          */
1363         if (remain < cmd->plen) {
1364                 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1365                 return -EFAULT;
1366         }
1367
1368         /* If there is a command that loads a patch in the firmware
1369          * file, then enable the patch upon success, otherwise just
1370          * disable the manufacturer mode, for example patch activation
1371          * is not required when the default firmware patch file is used
1372          * because there are no patch data to load.
1373          */
1374         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1375                 *disable_patch = 0;
1376
1377         cmd_param = *fw_ptr;
1378         *fw_ptr += cmd->plen;
1379         remain -= cmd->plen;
1380
1381         /* This reads the expected events when the above command is sent to the
1382          * device. Some vendor commands expects more than one events, for
1383          * example command status event followed by vendor specific event.
1384          * For this case, it only keeps the last expected event. so the command
1385          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1386          * last expected event.
1387          */
1388         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1389                 (*fw_ptr)++;
1390                 remain--;
1391
1392                 evt = (struct hci_event_hdr *)(*fw_ptr);
1393                 *fw_ptr += sizeof(*evt);
1394                 remain -= sizeof(*evt);
1395
1396                 if (remain < evt->plen) {
1397                         BT_ERR("%s Intel fw corrupted: invalid evt len",
1398                                hdev->name);
1399                         return -EFAULT;
1400                 }
1401
1402                 evt_param = *fw_ptr;
1403                 *fw_ptr += evt->plen;
1404                 remain -= evt->plen;
1405         }
1406
1407         /* Every HCI commands in the firmware file has its correspond event.
1408          * If event is not found or remain is smaller than zero, the firmware
1409          * file is corrupted.
1410          */
1411         if (!evt || !evt_param || remain < 0) {
1412                 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1413                 return -EFAULT;
1414         }
1415
1416         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1417                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1418         if (IS_ERR(skb)) {
1419                 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1420                        hdev->name, cmd->opcode, PTR_ERR(skb));
1421                 return PTR_ERR(skb);
1422         }
1423
1424         /* It ensures that the returned event matches the event data read from
1425          * the firmware file. At fist, it checks the length and then
1426          * the contents of the event.
1427          */
1428         if (skb->len != evt->plen) {
1429                 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1430                        le16_to_cpu(cmd->opcode));
1431                 kfree_skb(skb);
1432                 return -EFAULT;
1433         }
1434
1435         if (memcmp(skb->data, evt_param, evt->plen)) {
1436                 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1437                        hdev->name, le16_to_cpu(cmd->opcode));
1438                 kfree_skb(skb);
1439                 return -EFAULT;
1440         }
1441         kfree_skb(skb);
1442
1443         return 0;
1444 }
1445
1446 #define BDADDR_INTEL (&(bdaddr_t) {{0x00, 0x8b, 0x9e, 0x19, 0x03, 0x00}})
1447
1448 static int btusb_check_bdaddr_intel(struct hci_dev *hdev)
1449 {
1450         struct sk_buff *skb;
1451         struct hci_rp_read_bd_addr *rp;
1452
1453         skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
1454                              HCI_INIT_TIMEOUT);
1455         if (IS_ERR(skb)) {
1456                 BT_ERR("%s reading Intel device address failed (%ld)",
1457                        hdev->name, PTR_ERR(skb));
1458                 return PTR_ERR(skb);
1459         }
1460
1461         if (skb->len != sizeof(*rp)) {
1462                 BT_ERR("%s Intel device address length mismatch", hdev->name);
1463                 kfree_skb(skb);
1464                 return -EIO;
1465         }
1466
1467         rp = (struct hci_rp_read_bd_addr *)skb->data;
1468         if (rp->status) {
1469                 BT_ERR("%s Intel device address result failed (%02x)",
1470                        hdev->name, rp->status);
1471                 kfree_skb(skb);
1472                 return -bt_to_errno(rp->status);
1473         }
1474
1475         /* For some Intel based controllers, the default Bluetooth device
1476          * address 00:03:19:9E:8B:00 can be found. These controllers are
1477          * fully operational, but have the danger of duplicate addresses
1478          * and that in turn can cause problems with Bluetooth operation.
1479          */
1480         if (!bacmp(&rp->bdaddr, BDADDR_INTEL)) {
1481                 BT_ERR("%s found Intel default device address (%pMR)",
1482                        hdev->name, &rp->bdaddr);
1483                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
1484         }
1485
1486         kfree_skb(skb);
1487
1488         return 0;
1489 }
1490
1491 static int btusb_setup_intel(struct hci_dev *hdev)
1492 {
1493         struct sk_buff *skb;
1494         const struct firmware *fw;
1495         const u8 *fw_ptr;
1496         int disable_patch;
1497         struct intel_version *ver;
1498
1499         const u8 mfg_enable[] = { 0x01, 0x00 };
1500         const u8 mfg_disable[] = { 0x00, 0x00 };
1501         const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
1502         const u8 mfg_reset_activate[] = { 0x00, 0x02 };
1503
1504         BT_DBG("%s", hdev->name);
1505
1506         /* The controller has a bug with the first HCI command sent to it
1507          * returning number of completed commands as zero. This would stall the
1508          * command processing in the Bluetooth core.
1509          *
1510          * As a workaround, send HCI Reset command first which will reset the
1511          * number of completed commands and allow normal command processing
1512          * from now on.
1513          */
1514         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1515         if (IS_ERR(skb)) {
1516                 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1517                        hdev->name, PTR_ERR(skb));
1518                 return PTR_ERR(skb);
1519         }
1520         kfree_skb(skb);
1521
1522         /* Read Intel specific controller version first to allow selection of
1523          * which firmware file to load.
1524          *
1525          * The returned information are hardware variant and revision plus
1526          * firmware variant, revision and build number.
1527          */
1528         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1529         if (IS_ERR(skb)) {
1530                 BT_ERR("%s reading Intel fw version command failed (%ld)",
1531                        hdev->name, PTR_ERR(skb));
1532                 return PTR_ERR(skb);
1533         }
1534
1535         if (skb->len != sizeof(*ver)) {
1536                 BT_ERR("%s Intel version event length mismatch", hdev->name);
1537                 kfree_skb(skb);
1538                 return -EIO;
1539         }
1540
1541         ver = (struct intel_version *)skb->data;
1542         if (ver->status) {
1543                 BT_ERR("%s Intel fw version event failed (%02x)", hdev->name,
1544                        ver->status);
1545                 kfree_skb(skb);
1546                 return -bt_to_errno(ver->status);
1547         }
1548
1549         BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1550                 hdev->name, ver->hw_platform, ver->hw_variant,
1551                 ver->hw_revision, ver->fw_variant,  ver->fw_revision,
1552                 ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
1553                 ver->fw_patch_num);
1554
1555         /* fw_patch_num indicates the version of patch the device currently
1556          * have. If there is no patch data in the device, it is always 0x00.
1557          * So, if it is other than 0x00, no need to patch the deivce again.
1558          */
1559         if (ver->fw_patch_num) {
1560                 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1561                         hdev->name, ver->fw_patch_num);
1562                 kfree_skb(skb);
1563                 btusb_check_bdaddr_intel(hdev);
1564                 return 0;
1565         }
1566
1567         /* Opens the firmware patch file based on the firmware version read
1568          * from the controller. If it fails to open the matching firmware
1569          * patch file, it tries to open the default firmware patch file.
1570          * If no patch file is found, allow the device to operate without
1571          * a patch.
1572          */
1573         fw = btusb_setup_intel_get_fw(hdev, ver);
1574         if (!fw) {
1575                 kfree_skb(skb);
1576                 btusb_check_bdaddr_intel(hdev);
1577                 return 0;
1578         }
1579         fw_ptr = fw->data;
1580
1581         /* This Intel specific command enables the manufacturer mode of the
1582          * controller.
1583          *
1584          * Only while this mode is enabled, the driver can download the
1585          * firmware patch data and configuration parameters.
1586          */
1587         skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
1588         if (IS_ERR(skb)) {
1589                 BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
1590                        hdev->name, PTR_ERR(skb));
1591                 release_firmware(fw);
1592                 return PTR_ERR(skb);
1593         }
1594
1595         if (skb->data[0]) {
1596                 u8 evt_status = skb->data[0];
1597
1598                 BT_ERR("%s enable Intel manufacturer mode event failed (%02x)",
1599                        hdev->name, evt_status);
1600                 kfree_skb(skb);
1601                 release_firmware(fw);
1602                 return -bt_to_errno(evt_status);
1603         }
1604         kfree_skb(skb);
1605
1606         disable_patch = 1;
1607
1608         /* The firmware data file consists of list of Intel specific HCI
1609          * commands and its expected events. The first byte indicates the
1610          * type of the message, either HCI command or HCI event.
1611          *
1612          * It reads the command and its expected event from the firmware file,
1613          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1614          * the returned event is compared with the event read from the firmware
1615          * file and it will continue until all the messages are downloaded to
1616          * the controller.
1617          *
1618          * Once the firmware patching is completed successfully,
1619          * the manufacturer mode is disabled with reset and activating the
1620          * downloaded patch.
1621          *
1622          * If the firmware patching fails, the manufacturer mode is
1623          * disabled with reset and deactivating the patch.
1624          *
1625          * If the default patch file is used, no reset is done when disabling
1626          * the manufacturer.
1627          */
1628         while (fw->size > fw_ptr - fw->data) {
1629                 int ret;
1630
1631                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1632                                                  &disable_patch);
1633                 if (ret < 0)
1634                         goto exit_mfg_deactivate;
1635         }
1636
1637         release_firmware(fw);
1638
1639         if (disable_patch)
1640                 goto exit_mfg_disable;
1641
1642         /* Patching completed successfully and disable the manufacturer mode
1643          * with reset and activate the downloaded firmware patches.
1644          */
1645         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
1646                              mfg_reset_activate, HCI_INIT_TIMEOUT);
1647         if (IS_ERR(skb)) {
1648                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1649                        hdev->name, PTR_ERR(skb));
1650                 return PTR_ERR(skb);
1651         }
1652         kfree_skb(skb);
1653
1654         BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1655                 hdev->name);
1656
1657         btusb_check_bdaddr_intel(hdev);
1658         return 0;
1659
1660 exit_mfg_disable:
1661         /* Disable the manufacturer mode without reset */
1662         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
1663                              HCI_INIT_TIMEOUT);
1664         if (IS_ERR(skb)) {
1665                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1666                        hdev->name, PTR_ERR(skb));
1667                 return PTR_ERR(skb);
1668         }
1669         kfree_skb(skb);
1670
1671         BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1672
1673         btusb_check_bdaddr_intel(hdev);
1674         return 0;
1675
1676 exit_mfg_deactivate:
1677         release_firmware(fw);
1678
1679         /* Patching failed. Disable the manufacturer mode with reset and
1680          * deactivate the downloaded firmware patches.
1681          */
1682         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
1683                              mfg_reset_deactivate, HCI_INIT_TIMEOUT);
1684         if (IS_ERR(skb)) {
1685                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1686                        hdev->name, PTR_ERR(skb));
1687                 return PTR_ERR(skb);
1688         }
1689         kfree_skb(skb);
1690
1691         BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1692                 hdev->name);
1693
1694         btusb_check_bdaddr_intel(hdev);
1695         return 0;
1696 }
1697
1698 static int btusb_set_bdaddr_intel(struct hci_dev *hdev, const bdaddr_t *bdaddr)
1699 {
1700         struct sk_buff *skb;
1701         long ret;
1702
1703         skb = __hci_cmd_sync(hdev, 0xfc31, 6, bdaddr, HCI_INIT_TIMEOUT);
1704         if (IS_ERR(skb)) {
1705                 ret = PTR_ERR(skb);
1706                 BT_ERR("%s: changing Intel device address failed (%ld)",
1707                        hdev->name, ret);
1708                 return ret;
1709         }
1710         kfree_skb(skb);
1711
1712         return 0;
1713 }
1714
1715 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
1716                                     const bdaddr_t *bdaddr)
1717 {
1718         struct sk_buff *skb;
1719         u8 buf[8];
1720         long ret;
1721
1722         buf[0] = 0xfe;
1723         buf[1] = sizeof(bdaddr_t);
1724         memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
1725
1726         skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
1727         if (IS_ERR(skb)) {
1728                 ret = PTR_ERR(skb);
1729                 BT_ERR("%s: changing Marvell device address failed (%ld)",
1730                        hdev->name, ret);
1731                 return ret;
1732         }
1733         kfree_skb(skb);
1734
1735         return 0;
1736 }
1737
1738 #define BDADDR_BCM20702A0 (&(bdaddr_t) {{0x00, 0xa0, 0x02, 0x70, 0x20, 0x00}})
1739
1740 static int btusb_setup_bcm_patchram(struct hci_dev *hdev)
1741 {
1742         struct btusb_data *data = hci_get_drvdata(hdev);
1743         struct usb_device *udev = data->udev;
1744         char fw_name[64];
1745         const struct firmware *fw;
1746         const u8 *fw_ptr;
1747         size_t fw_size;
1748         const struct hci_command_hdr *cmd;
1749         const u8 *cmd_param;
1750         u16 opcode;
1751         struct sk_buff *skb;
1752         struct hci_rp_read_local_version *ver;
1753         struct hci_rp_read_bd_addr *bda;
1754         long ret;
1755
1756         snprintf(fw_name, sizeof(fw_name), "brcm/%s-%04x-%04x.hcd",
1757                  udev->product ? udev->product : "BCM",
1758                  le16_to_cpu(udev->descriptor.idVendor),
1759                  le16_to_cpu(udev->descriptor.idProduct));
1760
1761         ret = request_firmware(&fw, fw_name, &hdev->dev);
1762         if (ret < 0) {
1763                 BT_INFO("%s: BCM: patch %s not found", hdev->name, fw_name);
1764                 return 0;
1765         }
1766
1767         /* Reset */
1768         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1769         if (IS_ERR(skb)) {
1770                 ret = PTR_ERR(skb);
1771                 BT_ERR("%s: HCI_OP_RESET failed (%ld)", hdev->name, ret);
1772                 goto done;
1773         }
1774         kfree_skb(skb);
1775
1776         /* Read Local Version Info */
1777         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1778                              HCI_INIT_TIMEOUT);
1779         if (IS_ERR(skb)) {
1780                 ret = PTR_ERR(skb);
1781                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION failed (%ld)",
1782                        hdev->name, ret);
1783                 goto done;
1784         }
1785
1786         if (skb->len != sizeof(*ver)) {
1787                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION event length mismatch",
1788                        hdev->name);
1789                 kfree_skb(skb);
1790                 ret = -EIO;
1791                 goto done;
1792         }
1793
1794         ver = (struct hci_rp_read_local_version *)skb->data;
1795         BT_INFO("%s: BCM: patching hci_ver=%02x hci_rev=%04x lmp_ver=%02x "
1796                 "lmp_subver=%04x", hdev->name, ver->hci_ver, ver->hci_rev,
1797                 ver->lmp_ver, ver->lmp_subver);
1798         kfree_skb(skb);
1799
1800         /* Start Download */
1801         skb = __hci_cmd_sync(hdev, 0xfc2e, 0, NULL, HCI_INIT_TIMEOUT);
1802         if (IS_ERR(skb)) {
1803                 ret = PTR_ERR(skb);
1804                 BT_ERR("%s: BCM: Download Minidrv command failed (%ld)",
1805                        hdev->name, ret);
1806                 goto reset_fw;
1807         }
1808         kfree_skb(skb);
1809
1810         /* 50 msec delay after Download Minidrv completes */
1811         msleep(50);
1812
1813         fw_ptr = fw->data;
1814         fw_size = fw->size;
1815
1816         while (fw_size >= sizeof(*cmd)) {
1817                 cmd = (struct hci_command_hdr *)fw_ptr;
1818                 fw_ptr += sizeof(*cmd);
1819                 fw_size -= sizeof(*cmd);
1820
1821                 if (fw_size < cmd->plen) {
1822                         BT_ERR("%s: BCM: patch %s is corrupted",
1823                                hdev->name, fw_name);
1824                         ret = -EINVAL;
1825                         goto reset_fw;
1826                 }
1827
1828                 cmd_param = fw_ptr;
1829                 fw_ptr += cmd->plen;
1830                 fw_size -= cmd->plen;
1831
1832                 opcode = le16_to_cpu(cmd->opcode);
1833
1834                 skb = __hci_cmd_sync(hdev, opcode, cmd->plen, cmd_param,
1835                                      HCI_INIT_TIMEOUT);
1836                 if (IS_ERR(skb)) {
1837                         ret = PTR_ERR(skb);
1838                         BT_ERR("%s: BCM: patch command %04x failed (%ld)",
1839                                hdev->name, opcode, ret);
1840                         goto reset_fw;
1841                 }
1842                 kfree_skb(skb);
1843         }
1844
1845         /* 250 msec delay after Launch Ram completes */
1846         msleep(250);
1847
1848 reset_fw:
1849         /* Reset */
1850         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1851         if (IS_ERR(skb)) {
1852                 ret = PTR_ERR(skb);
1853                 BT_ERR("%s: HCI_OP_RESET failed (%ld)", hdev->name, ret);
1854                 goto done;
1855         }
1856         kfree_skb(skb);
1857
1858         /* Read Local Version Info */
1859         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1860                              HCI_INIT_TIMEOUT);
1861         if (IS_ERR(skb)) {
1862                 ret = PTR_ERR(skb);
1863                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION failed (%ld)",
1864                        hdev->name, ret);
1865                 goto done;
1866         }
1867
1868         if (skb->len != sizeof(*ver)) {
1869                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION event length mismatch",
1870                        hdev->name);
1871                 kfree_skb(skb);
1872                 ret = -EIO;
1873                 goto done;
1874         }
1875
1876         ver = (struct hci_rp_read_local_version *)skb->data;
1877         BT_INFO("%s: BCM: firmware hci_ver=%02x hci_rev=%04x lmp_ver=%02x "
1878                 "lmp_subver=%04x", hdev->name, ver->hci_ver, ver->hci_rev,
1879                 ver->lmp_ver, ver->lmp_subver);
1880         kfree_skb(skb);
1881
1882         /* Read BD Address */
1883         skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
1884                              HCI_INIT_TIMEOUT);
1885         if (IS_ERR(skb)) {
1886                 ret = PTR_ERR(skb);
1887                 BT_ERR("%s: HCI_OP_READ_BD_ADDR failed (%ld)",
1888                        hdev->name, ret);
1889                 goto done;
1890         }
1891
1892         if (skb->len != sizeof(*bda)) {
1893                 BT_ERR("%s: HCI_OP_READ_BD_ADDR event length mismatch",
1894                        hdev->name);
1895                 kfree_skb(skb);
1896                 ret = -EIO;
1897                 goto done;
1898         }
1899
1900         bda = (struct hci_rp_read_bd_addr *)skb->data;
1901         if (bda->status) {
1902                 BT_ERR("%s: HCI_OP_READ_BD_ADDR error status (%02x)",
1903                        hdev->name, bda->status);
1904                 kfree_skb(skb);
1905                 ret = -bt_to_errno(bda->status);
1906                 goto done;
1907         }
1908
1909         /* The address 00:20:70:02:A0:00 indicates a BCM20702A0 controller
1910          * with no configured address.
1911          */
1912         if (!bacmp(&bda->bdaddr, BDADDR_BCM20702A0)) {
1913                 BT_INFO("%s: BCM: using default device address (%pMR)",
1914                         hdev->name, &bda->bdaddr);
1915                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
1916         }
1917
1918         kfree_skb(skb);
1919
1920 done:
1921         release_firmware(fw);
1922
1923         return ret;
1924 }
1925
1926 static int btusb_set_bdaddr_bcm(struct hci_dev *hdev, const bdaddr_t *bdaddr)
1927 {
1928         struct sk_buff *skb;
1929         long ret;
1930
1931         skb = __hci_cmd_sync(hdev, 0xfc01, 6, bdaddr, HCI_INIT_TIMEOUT);
1932         if (IS_ERR(skb)) {
1933                 ret = PTR_ERR(skb);
1934                 BT_ERR("%s: BCM: Change address command failed (%ld)",
1935                        hdev->name, ret);
1936                 return ret;
1937         }
1938         kfree_skb(skb);
1939
1940         return 0;
1941 }
1942
1943 static int btusb_probe(struct usb_interface *intf,
1944                        const struct usb_device_id *id)
1945 {
1946         struct usb_endpoint_descriptor *ep_desc;
1947         struct btusb_data *data;
1948         struct hci_dev *hdev;
1949         int i, err;
1950
1951         BT_DBG("intf %p id %p", intf, id);
1952
1953         /* interface numbers are hardcoded in the spec */
1954         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
1955                 return -ENODEV;
1956
1957         if (!id->driver_info) {
1958                 const struct usb_device_id *match;
1959
1960                 match = usb_match_id(intf, blacklist_table);
1961                 if (match)
1962                         id = match;
1963         }
1964
1965         if (id->driver_info == BTUSB_IGNORE)
1966                 return -ENODEV;
1967
1968         if (id->driver_info & BTUSB_ATH3012) {
1969                 struct usb_device *udev = interface_to_usbdev(intf);
1970
1971                 /* Old firmware would otherwise let ath3k driver load
1972                  * patch and sysconfig files */
1973                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
1974                         return -ENODEV;
1975         }
1976
1977         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
1978         if (!data)
1979                 return -ENOMEM;
1980
1981         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1982                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1983
1984                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
1985                         data->intr_ep = ep_desc;
1986                         continue;
1987                 }
1988
1989                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
1990                         data->bulk_tx_ep = ep_desc;
1991                         continue;
1992                 }
1993
1994                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
1995                         data->bulk_rx_ep = ep_desc;
1996                         continue;
1997                 }
1998         }
1999
2000         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
2001                 return -ENODEV;
2002
2003         data->cmdreq_type = USB_TYPE_CLASS;
2004
2005         data->udev = interface_to_usbdev(intf);
2006         data->intf = intf;
2007
2008         INIT_WORK(&data->work, btusb_work);
2009         INIT_WORK(&data->waker, btusb_waker);
2010         init_usb_anchor(&data->deferred);
2011         init_usb_anchor(&data->tx_anchor);
2012         spin_lock_init(&data->txlock);
2013
2014         init_usb_anchor(&data->intr_anchor);
2015         init_usb_anchor(&data->bulk_anchor);
2016         init_usb_anchor(&data->isoc_anchor);
2017         spin_lock_init(&data->rxlock);
2018
2019         data->recv_bulk = btusb_recv_bulk;
2020
2021         hdev = hci_alloc_dev();
2022         if (!hdev)
2023                 return -ENOMEM;
2024
2025         hdev->bus = HCI_USB;
2026         hci_set_drvdata(hdev, data);
2027
2028         data->hdev = hdev;
2029
2030         SET_HCIDEV_DEV(hdev, &intf->dev);
2031
2032         hdev->open   = btusb_open;
2033         hdev->close  = btusb_close;
2034         hdev->flush  = btusb_flush;
2035         hdev->send   = btusb_send_frame;
2036         hdev->notify = btusb_notify;
2037
2038         if (id->driver_info & BTUSB_BCM92035)
2039                 hdev->setup = btusb_setup_bcm92035;
2040
2041         if (id->driver_info & BTUSB_BCM_PATCHRAM) {
2042                 hdev->setup = btusb_setup_bcm_patchram;
2043                 hdev->set_bdaddr = btusb_set_bdaddr_bcm;
2044                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2045         }
2046
2047         if (id->driver_info & BTUSB_INTEL) {
2048                 hdev->setup = btusb_setup_intel;
2049                 hdev->set_bdaddr = btusb_set_bdaddr_intel;
2050         }
2051
2052         if (id->driver_info & BTUSB_MARVELL)
2053                 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
2054
2055         if (id->driver_info & BTUSB_INTEL_BOOT)
2056                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
2057
2058         /* Interface numbers are hardcoded in the specification */
2059         data->isoc = usb_ifnum_to_if(data->udev, 1);
2060
2061         if (!reset)
2062                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2063
2064         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
2065                 if (!disable_scofix)
2066                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
2067         }
2068
2069         if (id->driver_info & BTUSB_BROKEN_ISOC)
2070                 data->isoc = NULL;
2071
2072         if (id->driver_info & BTUSB_DIGIANSWER) {
2073                 data->cmdreq_type = USB_TYPE_VENDOR;
2074                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2075         }
2076
2077         if (id->driver_info & BTUSB_CSR) {
2078                 struct usb_device *udev = data->udev;
2079                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
2080
2081                 /* Old firmware would otherwise execute USB reset */
2082                 if (bcdDevice < 0x117)
2083                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2084
2085                 /* Fake CSR devices with broken commands */
2086                 if (bcdDevice <= 0x100)
2087                         hdev->setup = btusb_setup_csr;
2088         }
2089
2090         if (id->driver_info & BTUSB_SNIFFER) {
2091                 struct usb_device *udev = data->udev;
2092
2093                 /* New sniffer firmware has crippled HCI interface */
2094                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
2095                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
2096         }
2097
2098         if (id->driver_info & BTUSB_INTEL_BOOT) {
2099                 /* A bug in the bootloader causes that interrupt interface is
2100                  * only enabled after receiving SetInterface(0, AltSetting=0).
2101                  */
2102                 err = usb_set_interface(data->udev, 0, 0);
2103                 if (err < 0) {
2104                         BT_ERR("failed to set interface 0, alt 0 %d", err);
2105                         hci_free_dev(hdev);
2106                         return err;
2107                 }
2108         }
2109
2110         if (data->isoc) {
2111                 err = usb_driver_claim_interface(&btusb_driver,
2112                                                  data->isoc, data);
2113                 if (err < 0) {
2114                         hci_free_dev(hdev);
2115                         return err;
2116                 }
2117         }
2118
2119         err = hci_register_dev(hdev);
2120         if (err < 0) {
2121                 hci_free_dev(hdev);
2122                 return err;
2123         }
2124
2125         usb_set_intfdata(intf, data);
2126
2127         return 0;
2128 }
2129
2130 static void btusb_disconnect(struct usb_interface *intf)
2131 {
2132         struct btusb_data *data = usb_get_intfdata(intf);
2133         struct hci_dev *hdev;
2134
2135         BT_DBG("intf %p", intf);
2136
2137         if (!data)
2138                 return;
2139
2140         hdev = data->hdev;
2141         usb_set_intfdata(data->intf, NULL);
2142
2143         if (data->isoc)
2144                 usb_set_intfdata(data->isoc, NULL);
2145
2146         hci_unregister_dev(hdev);
2147
2148         if (intf == data->isoc)
2149                 usb_driver_release_interface(&btusb_driver, data->intf);
2150         else if (data->isoc)
2151                 usb_driver_release_interface(&btusb_driver, data->isoc);
2152
2153         btusb_free_frags(data);
2154         hci_free_dev(hdev);
2155 }
2156
2157 #ifdef CONFIG_PM
2158 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
2159 {
2160         struct btusb_data *data = usb_get_intfdata(intf);
2161
2162         BT_DBG("intf %p", intf);
2163
2164         if (data->suspend_count++)
2165                 return 0;
2166
2167         spin_lock_irq(&data->txlock);
2168         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
2169                 set_bit(BTUSB_SUSPENDING, &data->flags);
2170                 spin_unlock_irq(&data->txlock);
2171         } else {
2172                 spin_unlock_irq(&data->txlock);
2173                 data->suspend_count--;
2174                 return -EBUSY;
2175         }
2176
2177         cancel_work_sync(&data->work);
2178
2179         btusb_stop_traffic(data);
2180         usb_kill_anchored_urbs(&data->tx_anchor);
2181
2182         return 0;
2183 }
2184
2185 static void play_deferred(struct btusb_data *data)
2186 {
2187         struct urb *urb;
2188         int err;
2189
2190         while ((urb = usb_get_from_anchor(&data->deferred))) {
2191                 err = usb_submit_urb(urb, GFP_ATOMIC);
2192                 if (err < 0)
2193                         break;
2194
2195                 data->tx_in_flight++;
2196         }
2197         usb_scuttle_anchored_urbs(&data->deferred);
2198 }
2199
2200 static int btusb_resume(struct usb_interface *intf)
2201 {
2202         struct btusb_data *data = usb_get_intfdata(intf);
2203         struct hci_dev *hdev = data->hdev;
2204         int err = 0;
2205
2206         BT_DBG("intf %p", intf);
2207
2208         if (--data->suspend_count)
2209                 return 0;
2210
2211         if (!test_bit(HCI_RUNNING, &hdev->flags))
2212                 goto done;
2213
2214         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
2215                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
2216                 if (err < 0) {
2217                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
2218                         goto failed;
2219                 }
2220         }
2221
2222         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
2223                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
2224                 if (err < 0) {
2225                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
2226                         goto failed;
2227                 }
2228
2229                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
2230         }
2231
2232         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
2233                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
2234                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
2235                 else
2236                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
2237         }
2238
2239         spin_lock_irq(&data->txlock);
2240         play_deferred(data);
2241         clear_bit(BTUSB_SUSPENDING, &data->flags);
2242         spin_unlock_irq(&data->txlock);
2243         schedule_work(&data->work);
2244
2245         return 0;
2246
2247 failed:
2248         usb_scuttle_anchored_urbs(&data->deferred);
2249 done:
2250         spin_lock_irq(&data->txlock);
2251         clear_bit(BTUSB_SUSPENDING, &data->flags);
2252         spin_unlock_irq(&data->txlock);
2253
2254         return err;
2255 }
2256 #endif
2257
2258 static struct usb_driver btusb_driver = {
2259         .name           = "btusb",
2260         .probe          = btusb_probe,
2261         .disconnect     = btusb_disconnect,
2262 #ifdef CONFIG_PM
2263         .suspend        = btusb_suspend,
2264         .resume         = btusb_resume,
2265 #endif
2266         .id_table       = btusb_table,
2267         .supports_autosuspend = 1,
2268         .disable_hub_initiated_lpm = 1,
2269 };
2270
2271 module_usb_driver(btusb_driver);
2272
2273 module_param(disable_scofix, bool, 0644);
2274 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
2275
2276 module_param(force_scofix, bool, 0644);
2277 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
2278
2279 module_param(reset, bool, 0644);
2280 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
2281
2282 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
2283 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
2284 MODULE_VERSION(VERSION);
2285 MODULE_LICENSE("GPL");