drivers/bluetooth/btusb.c

   1 /*
   2  *
   3  *  Generic Bluetooth USB driver
   4  *
   5  *  Copyright (C) 2005-2008  Marcel Holtmann <marcel@holtmann.org>
   6  *
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, write to the Free Software
  20  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  *
  22  */
  23
  24 #include <linux/module.h>
  25 #include <linux/usb.h>
  26 #include <linux/firmware.h>
  27
  28 #include <net/bluetooth/bluetooth.h>
  29 #include <net/bluetooth/hci_core.h>
  30
  31 #define VERSION "0.6"
  32
  33 static bool disable_scofix;
  34 static bool force_scofix;
  35
  36 static bool reset = 1;
  37
  38 static struct usb_driver btusb_driver;
  39
  40 #define BTUSB_IGNORE            0x01
  41 #define BTUSB_DIGIANSWER        0x02
  42 #define BTUSB_CSR               0x04
  43 #define BTUSB_SNIFFER           0x08
  44 #define BTUSB_BCM92035          0x10
  45 #define BTUSB_BROKEN_ISOC       0x20
  46 #define BTUSB_WRONG_SCO_MTU     0x40
  47 #define BTUSB_ATH3012           0x80
  48 #define BTUSB_INTEL             0x100
  49 #define BTUSB_INTEL_BOOT        0x200
  50 #define BTUSB_BCM_PATCHRAM      0x400
  51 #define BTUSB_MARVELL           0x800
  52
  53 static const struct usb_device_id btusb_table[] = {
  54         /* Generic Bluetooth USB device */
  55         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  56
  57         /* Apple-specific (Broadcom) devices */
  58         { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01) },
  59
  60         /* MediaTek MT76x0E */
  61         { USB_DEVICE(0x0e8d, 0x763f) },
  62
  63         /* Broadcom SoftSailing reporting vendor specific */
  64         { USB_DEVICE(0x0a5c, 0x21e1) },
  65
  66         /* Apple MacBookPro 7,1 */
  67         { USB_DEVICE(0x05ac, 0x8213) },
  68
  69         /* Apple iMac11,1 */
  70         { USB_DEVICE(0x05ac, 0x8215) },
  71
  72         /* Apple MacBookPro6,2 */
  73         { USB_DEVICE(0x05ac, 0x8218) },
  74
  75         /* Apple MacBookAir3,1, MacBookAir3,2 */
  76         { USB_DEVICE(0x05ac, 0x821b) },
  77
  78         /* Apple MacBookAir4,1 */
  79         { USB_DEVICE(0x05ac, 0x821f) },
  80
  81         /* Apple MacBookPro8,2 */
  82         { USB_DEVICE(0x05ac, 0x821a) },
  83
  84         /* Apple MacMini5,1 */
  85         { USB_DEVICE(0x05ac, 0x8281) },
  86
  87         /* AVM BlueFRITZ! USB v2.0 */
  88         { USB_DEVICE(0x057c, 0x3800) },
  89
  90         /* Bluetooth Ultraport Module from IBM */
  91         { USB_DEVICE(0x04bf, 0x030a) },
  92
  93         /* ALPS Modules with non-standard id */
  94         { USB_DEVICE(0x044e, 0x3001) },
  95         { USB_DEVICE(0x044e, 0x3002) },
  96
  97         /* Ericsson with non-standard id */
  98         { USB_DEVICE(0x0bdb, 0x1002) },
  99
 100         /* Canyon CN-BTU1 with HID interfaces */
 101         { USB_DEVICE(0x0c10, 0x0000) },
 102
 103         /* Broadcom BCM20702A0 */
 104         { USB_DEVICE(0x0489, 0xe042) },
 105         { USB_DEVICE(0x04ca, 0x2003) },
 106         { USB_DEVICE(0x0b05, 0x17b5) },
 107         { USB_DEVICE(0x0b05, 0x17cb) },
 108         { USB_DEVICE(0x413c, 0x8197) },
 109         { USB_DEVICE(0x13d3, 0x3404),
 110           .driver_info = BTUSB_BCM_PATCHRAM },
 111
 112         /* Foxconn - Hon Hai */
 113         { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01),
 114           .driver_info = BTUSB_BCM_PATCHRAM },
 115
 116         /* Broadcom devices with vendor specific id */
 117         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
 118           .driver_info = BTUSB_BCM_PATCHRAM },
 119
 120         /* ASUSTek Computer - Broadcom based */
 121         { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01) },
 122
 123         /* Belkin F8065bf - Broadcom based */
 124         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01) },
 125
 126         /* IMC Networks - Broadcom based */
 127         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01) },
 128
 129         /* Intel Bluetooth USB Bootloader (RAM module) */
 130         { USB_DEVICE(0x8087, 0x0a5a),
 131           .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
 132
 133         { }     /* Terminating entry */
 134 };
 135
 136 MODULE_DEVICE_TABLE(usb, btusb_table);
 137
 138 static const struct usb_device_id blacklist_table[] = {
 139         /* CSR BlueCore devices */
 140         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 141
 142         /* Broadcom BCM2033 without firmware */
 143         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 144
 145         /* Atheros 3011 with sflash firmware */
 146         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 147         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 148         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 149         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 150         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 151         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 152
 153         /* Atheros AR9285 Malbec with sflash firmware */
 154         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 155
 156         /* Atheros 3012 with sflash firmware */
 157         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 158         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 159         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 160         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 161         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 162         { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
 163         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 164         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 165         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 166         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 167         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 168         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 169         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 170         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 171         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 172         { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
 173         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 174         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 175         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 176         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 177         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 178         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
 179         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 180         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 181         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 182         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 183         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 184         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 185         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 186         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 187         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 188         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 189         { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
 190         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
 191
 192         /* Atheros AR5BBU12 with sflash firmware */
 193         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 194
 195         /* Atheros AR5BBU12 with sflash firmware */
 196         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 197         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 198
 199         /* Broadcom BCM2035 */
 200         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 201         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 202         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 203
 204         /* Broadcom BCM2045 */
 205         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 206         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 207
 208         /* IBM/Lenovo ThinkPad with Broadcom chip */
 209         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 210         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 211
 212         /* HP laptop with Broadcom chip */
 213         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 214
 215         /* Dell laptop with Broadcom chip */
 216         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 217
 218         /* Dell Wireless 370 and 410 devices */
 219         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 220         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 221
 222         /* Belkin F8T012 and F8T013 devices */
 223         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 224         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 225
 226         /* Asus WL-BTD202 device */
 227         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 228
 229         /* Kensington Bluetooth USB adapter */
 230         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 231
 232         /* RTX Telecom based adapters with buggy SCO support */
 233         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 234         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 235
 236         /* CONWISE Technology based adapters with buggy SCO support */
 237         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 238
 239         /* Digianswer devices */
 240         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 241         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 242
 243         /* CSR BlueCore Bluetooth Sniffer */
 244         { USB_DEVICE(0x0a12, 0x0002),
 245           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 246
 247         /* Frontline ComProbe Bluetooth Sniffer */
 248         { USB_DEVICE(0x16d3, 0x0002),
 249           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 250
 251         /* Intel Bluetooth device */
 252         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 253         { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
 254
 255         /* Marvell device */
 256         { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
 257         { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
 258
 259         { }     /* Terminating entry */
 260 };
 261
 262 #define BTUSB_MAX_ISOC_FRAMES   10
 263
 264 #define BTUSB_INTR_RUNNING      0
 265 #define BTUSB_BULK_RUNNING      1
 266 #define BTUSB_ISOC_RUNNING      2
 267 #define BTUSB_SUSPENDING        3
 268 #define BTUSB_DID_ISO_RESUME    4
 269
 270 struct btusb_data {
 271         struct hci_dev       *hdev;
 272         struct usb_device    *udev;
 273         struct usb_interface *intf;
 274         struct usb_interface *isoc;
 275
 276         unsigned long flags;
 277
 278         struct work_struct work;
 279         struct work_struct waker;
 280
 281         struct usb_anchor deferred;
 282         struct usb_anchor tx_anchor;
 283         int tx_in_flight;
 284         spinlock_t txlock;
 285
 286         struct usb_anchor intr_anchor;
 287         struct usb_anchor bulk_anchor;
 288         struct usb_anchor isoc_anchor;
 289         spinlock_t rxlock;
 290
 291         struct sk_buff *evt_skb;
 292         struct sk_buff *acl_skb;
 293         struct sk_buff *sco_skb;
 294
 295         struct usb_endpoint_descriptor *intr_ep;
 296         struct usb_endpoint_descriptor *bulk_tx_ep;
 297         struct usb_endpoint_descriptor *bulk_rx_ep;
 298         struct usb_endpoint_descriptor *isoc_tx_ep;
 299         struct usb_endpoint_descriptor *isoc_rx_ep;
 300
 301         __u8 cmdreq_type;
 302
 303         unsigned int sco_num;
 304         int isoc_altsetting;
 305         int suspend_count;
 306
 307         int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
 308 };
 309
 310 static inline void btusb_free_frags(struct btusb_data *data)
 311 {
 312         unsigned long flags;
 313
 314         spin_lock_irqsave(&data->rxlock, flags);
 315
 316         kfree_skb(data->evt_skb);
 317         data->evt_skb = NULL;
 318
 319         kfree_skb(data->acl_skb);
 320         data->acl_skb = NULL;
 321
 322         kfree_skb(data->sco_skb);
 323         data->sco_skb = NULL;
 324
 325         spin_unlock_irqrestore(&data->rxlock, flags);
 326 }
 327
 328 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
 329 {
 330         struct sk_buff *skb;
 331         int err = 0;
 332
 333         spin_lock(&data->rxlock);
 334         skb = data->evt_skb;
 335
 336         while (count) {
 337                 int len;
 338
 339                 if (!skb) {
 340                         skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
 341                         if (!skb) {
 342                                 err = -ENOMEM;
 343                                 break;
 344                         }
 345
 346                         bt_cb(skb)->pkt_type = HCI_EVENT_PKT;
 347                         bt_cb(skb)->expect = HCI_EVENT_HDR_SIZE;
 348                 }
 349
 350                 len = min_t(uint, bt_cb(skb)->expect, count);
 351                 memcpy(skb_put(skb, len), buffer, len);
 352
 353                 count -= len;
 354                 buffer += len;
 355                 bt_cb(skb)->expect -= len;
 356
 357                 if (skb->len == HCI_EVENT_HDR_SIZE) {
 358                         /* Complete event header */
 359                         bt_cb(skb)->expect = hci_event_hdr(skb)->plen;
 360
 361                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 362                                 kfree_skb(skb);
 363                                 skb = NULL;
 364
 365                                 err = -EILSEQ;
 366                                 break;
 367                         }
 368                 }
 369
 370                 if (bt_cb(skb)->expect == 0) {
 371                         /* Complete frame */
 372                         hci_recv_frame(data->hdev, skb);
 373                         skb = NULL;
 374                 }
 375         }
 376
 377         data->evt_skb = skb;
 378         spin_unlock(&data->rxlock);
 379
 380         return err;
 381 }
 382
 383 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
 384 {
 385         struct sk_buff *skb;
 386         int err = 0;
 387
 388         spin_lock(&data->rxlock);
 389         skb = data->acl_skb;
 390
 391         while (count) {
 392                 int len;
 393
 394                 if (!skb) {
 395                         skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
 396                         if (!skb) {
 397                                 err = -ENOMEM;
 398                                 break;
 399                         }
 400
 401                         bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT;
 402                         bt_cb(skb)->expect = HCI_ACL_HDR_SIZE;
 403                 }
 404
 405                 len = min_t(uint, bt_cb(skb)->expect, count);
 406                 memcpy(skb_put(skb, len), buffer, len);
 407
 408                 count -= len;
 409                 buffer += len;
 410                 bt_cb(skb)->expect -= len;
 411
 412                 if (skb->len == HCI_ACL_HDR_SIZE) {
 413                         __le16 dlen = hci_acl_hdr(skb)->dlen;
 414
 415                         /* Complete ACL header */
 416                         bt_cb(skb)->expect = __le16_to_cpu(dlen);
 417
 418                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 419                                 kfree_skb(skb);
 420                                 skb = NULL;
 421
 422                                 err = -EILSEQ;
 423                                 break;
 424                         }
 425                 }
 426
 427                 if (bt_cb(skb)->expect == 0) {
 428                         /* Complete frame */
 429                         hci_recv_frame(data->hdev, skb);
 430                         skb = NULL;
 431                 }
 432         }
 433
 434         data->acl_skb = skb;
 435         spin_unlock(&data->rxlock);
 436
 437         return err;
 438 }
 439
 440 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
 441 {
 442         struct sk_buff *skb;
 443         int err = 0;
 444
 445         spin_lock(&data->rxlock);
 446         skb = data->sco_skb;
 447
 448         while (count) {
 449                 int len;
 450
 451                 if (!skb) {
 452                         skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
 453                         if (!skb) {
 454                                 err = -ENOMEM;
 455                                 break;
 456                         }
 457
 458                         bt_cb(skb)->pkt_type = HCI_SCODATA_PKT;
 459                         bt_cb(skb)->expect = HCI_SCO_HDR_SIZE;
 460                 }
 461
 462                 len = min_t(uint, bt_cb(skb)->expect, count);
 463                 memcpy(skb_put(skb, len), buffer, len);
 464
 465                 count -= len;
 466                 buffer += len;
 467                 bt_cb(skb)->expect -= len;
 468
 469                 if (skb->len == HCI_SCO_HDR_SIZE) {
 470                         /* Complete SCO header */
 471                         bt_cb(skb)->expect = hci_sco_hdr(skb)->dlen;
 472
 473                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 474                                 kfree_skb(skb);
 475                                 skb = NULL;
 476
 477                                 err = -EILSEQ;
 478                                 break;
 479                         }
 480                 }
 481
 482                 if (bt_cb(skb)->expect == 0) {
 483                         /* Complete frame */
 484                         hci_recv_frame(data->hdev, skb);
 485                         skb = NULL;
 486                 }
 487         }
 488
 489         data->sco_skb = skb;
 490         spin_unlock(&data->rxlock);
 491
 492         return err;
 493 }
 494
 495 static void btusb_intr_complete(struct urb *urb)
 496 {
 497         struct hci_dev *hdev = urb->context;
 498         struct btusb_data *data = hci_get_drvdata(hdev);
 499         int err;
 500
 501         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 502                urb->actual_length);
 503
 504         if (!test_bit(HCI_RUNNING, &hdev->flags))
 505                 return;
 506
 507         if (urb->status == 0) {
 508                 hdev->stat.byte_rx += urb->actual_length;
 509
 510                 if (btusb_recv_intr(data, urb->transfer_buffer,
 511                                     urb->actual_length) < 0) {
 512                         BT_ERR("%s corrupted event packet", hdev->name);
 513                         hdev->stat.err_rx++;
 514                 }
 515         } else if (urb->status == -ENOENT) {
 516                 /* Avoid suspend failed when usb_kill_urb */
 517                 return;
 518         }
 519
 520         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 521                 return;
 522
 523         usb_mark_last_busy(data->udev);
 524         usb_anchor_urb(urb, &data->intr_anchor);
 525
 526         err = usb_submit_urb(urb, GFP_ATOMIC);
 527         if (err < 0) {
 528                 /* -EPERM: urb is being killed;
 529                  * -ENODEV: device got disconnected */
 530                 if (err != -EPERM && err != -ENODEV)
 531                         BT_ERR("%s urb %p failed to resubmit (%d)",
 532                                hdev->name, urb, -err);
 533                 usb_unanchor_urb(urb);
 534         }
 535 }
 536
 537 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 538 {
 539         struct btusb_data *data = hci_get_drvdata(hdev);
 540         struct urb *urb;
 541         unsigned char *buf;
 542         unsigned int pipe;
 543         int err, size;
 544
 545         BT_DBG("%s", hdev->name);
 546
 547         if (!data->intr_ep)
 548                 return -ENODEV;
 549
 550         urb = usb_alloc_urb(0, mem_flags);
 551         if (!urb)
 552                 return -ENOMEM;
 553
 554         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 555
 556         buf = kmalloc(size, mem_flags);
 557         if (!buf) {
 558                 usb_free_urb(urb);
 559                 return -ENOMEM;
 560         }
 561
 562         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 563
 564         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 565                          btusb_intr_complete, hdev, data->intr_ep->bInterval);
 566
 567         urb->transfer_flags |= URB_FREE_BUFFER;
 568
 569         usb_anchor_urb(urb, &data->intr_anchor);
 570
 571         err = usb_submit_urb(urb, mem_flags);
 572         if (err < 0) {
 573                 if (err != -EPERM && err != -ENODEV)
 574                         BT_ERR("%s urb %p submission failed (%d)",
 575                                hdev->name, urb, -err);
 576                 usb_unanchor_urb(urb);
 577         }
 578
 579         usb_free_urb(urb);
 580
 581         return err;
 582 }
 583
 584 static void btusb_bulk_complete(struct urb *urb)
 585 {
 586         struct hci_dev *hdev = urb->context;
 587         struct btusb_data *data = hci_get_drvdata(hdev);
 588         int err;
 589
 590         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 591                urb->actual_length);
 592
 593         if (!test_bit(HCI_RUNNING, &hdev->flags))
 594                 return;
 595
 596         if (urb->status == 0) {
 597                 hdev->stat.byte_rx += urb->actual_length;
 598
 599                 if (data->recv_bulk(data, urb->transfer_buffer,
 600                                     urb->actual_length) < 0) {
 601                         BT_ERR("%s corrupted ACL packet", hdev->name);
 602                         hdev->stat.err_rx++;
 603                 }
 604         } else if (urb->status == -ENOENT) {
 605                 /* Avoid suspend failed when usb_kill_urb */
 606                 return;
 607         }
 608
 609         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 610                 return;
 611
 612         usb_anchor_urb(urb, &data->bulk_anchor);
 613         usb_mark_last_busy(data->udev);
 614
 615         err = usb_submit_urb(urb, GFP_ATOMIC);
 616         if (err < 0) {
 617                 /* -EPERM: urb is being killed;
 618                  * -ENODEV: device got disconnected */
 619                 if (err != -EPERM && err != -ENODEV)
 620                         BT_ERR("%s urb %p failed to resubmit (%d)",
 621                                hdev->name, urb, -err);
 622                 usb_unanchor_urb(urb);
 623         }
 624 }
 625
 626 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 627 {
 628         struct btusb_data *data = hci_get_drvdata(hdev);
 629         struct urb *urb;
 630         unsigned char *buf;
 631         unsigned int pipe;
 632         int err, size = HCI_MAX_FRAME_SIZE;
 633
 634         BT_DBG("%s", hdev->name);
 635
 636         if (!data->bulk_rx_ep)
 637                 return -ENODEV;
 638
 639         urb = usb_alloc_urb(0, mem_flags);
 640         if (!urb)
 641                 return -ENOMEM;
 642
 643         buf = kmalloc(size, mem_flags);
 644         if (!buf) {
 645                 usb_free_urb(urb);
 646                 return -ENOMEM;
 647         }
 648
 649         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 650
 651         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
 652                           btusb_bulk_complete, hdev);
 653
 654         urb->transfer_flags |= URB_FREE_BUFFER;
 655
 656         usb_mark_last_busy(data->udev);
 657         usb_anchor_urb(urb, &data->bulk_anchor);
 658
 659         err = usb_submit_urb(urb, mem_flags);
 660         if (err < 0) {
 661                 if (err != -EPERM && err != -ENODEV)
 662                         BT_ERR("%s urb %p submission failed (%d)",
 663                                hdev->name, urb, -err);
 664                 usb_unanchor_urb(urb);
 665         }
 666
 667         usb_free_urb(urb);
 668
 669         return err;
 670 }
 671
 672 static void btusb_isoc_complete(struct urb *urb)
 673 {
 674         struct hci_dev *hdev = urb->context;
 675         struct btusb_data *data = hci_get_drvdata(hdev);
 676         int i, err;
 677
 678         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 679                urb->actual_length);
 680
 681         if (!test_bit(HCI_RUNNING, &hdev->flags))
 682                 return;
 683
 684         if (urb->status == 0) {
 685                 for (i = 0; i < urb->number_of_packets; i++) {
 686                         unsigned int offset = urb->iso_frame_desc[i].offset;
 687                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 688
 689                         if (urb->iso_frame_desc[i].status)
 690                                 continue;
 691
 692                         hdev->stat.byte_rx += length;
 693
 694                         if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
 695                                             length) < 0) {
 696                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 697                                 hdev->stat.err_rx++;
 698                         }
 699                 }
 700         } else if (urb->status == -ENOENT) {
 701                 /* Avoid suspend failed when usb_kill_urb */
 702                 return;
 703         }
 704
 705         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 706                 return;
 707
 708         usb_anchor_urb(urb, &data->isoc_anchor);
 709
 710         err = usb_submit_urb(urb, GFP_ATOMIC);
 711         if (err < 0) {
 712                 /* -EPERM: urb is being killed;
 713                  * -ENODEV: device got disconnected */
 714                 if (err != -EPERM && err != -ENODEV)
 715                         BT_ERR("%s urb %p failed to resubmit (%d)",
 716                                hdev->name, urb, -err);
 717                 usb_unanchor_urb(urb);
 718         }
 719 }
 720
 721 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 722 {
 723         int i, offset = 0;
 724
 725         BT_DBG("len %d mtu %d", len, mtu);
 726
 727         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 728                                         i++, offset += mtu, len -= mtu) {
 729                 urb->iso_frame_desc[i].offset = offset;
 730                 urb->iso_frame_desc[i].length = mtu;
 731         }
 732
 733         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 734                 urb->iso_frame_desc[i].offset = offset;
 735                 urb->iso_frame_desc[i].length = len;
 736                 i++;
 737         }
 738
 739         urb->number_of_packets = i;
 740 }
 741
 742 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 743 {
 744         struct btusb_data *data = hci_get_drvdata(hdev);
 745         struct urb *urb;
 746         unsigned char *buf;
 747         unsigned int pipe;
 748         int err, size;
 749
 750         BT_DBG("%s", hdev->name);
 751
 752         if (!data->isoc_rx_ep)
 753                 return -ENODEV;
 754
 755         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 756         if (!urb)
 757                 return -ENOMEM;
 758
 759         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 760                                                 BTUSB_MAX_ISOC_FRAMES;
 761
 762         buf = kmalloc(size, mem_flags);
 763         if (!buf) {
 764                 usb_free_urb(urb);
 765                 return -ENOMEM;
 766         }
 767
 768         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 769
 770         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 771                          hdev, data->isoc_rx_ep->bInterval);
 772
 773         urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
 774
 775         __fill_isoc_descriptor(urb, size,
 776                                le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 777
 778         usb_anchor_urb(urb, &data->isoc_anchor);
 779
 780         err = usb_submit_urb(urb, mem_flags);
 781         if (err < 0) {
 782                 if (err != -EPERM && err != -ENODEV)
 783                         BT_ERR("%s urb %p submission failed (%d)",
 784                                hdev->name, urb, -err);
 785                 usb_unanchor_urb(urb);
 786         }
 787
 788         usb_free_urb(urb);
 789
 790         return err;
 791 }
 792
 793 static void btusb_tx_complete(struct urb *urb)
 794 {
 795         struct sk_buff *skb = urb->context;
 796         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
 797         struct btusb_data *data = hci_get_drvdata(hdev);
 798
 799         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 800                urb->actual_length);
 801
 802         if (!test_bit(HCI_RUNNING, &hdev->flags))
 803                 goto done;
 804
 805         if (!urb->status)
 806                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 807         else
 808                 hdev->stat.err_tx++;
 809
 810 done:
 811         spin_lock(&data->txlock);
 812         data->tx_in_flight--;
 813         spin_unlock(&data->txlock);
 814
 815         kfree(urb->setup_packet);
 816
 817         kfree_skb(skb);
 818 }
 819
 820 static void btusb_isoc_tx_complete(struct urb *urb)
 821 {
 822         struct sk_buff *skb = urb->context;
 823         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
 824
 825         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 826                urb->actual_length);
 827
 828         if (!test_bit(HCI_RUNNING, &hdev->flags))
 829                 goto done;
 830
 831         if (!urb->status)
 832                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 833         else
 834                 hdev->stat.err_tx++;
 835
 836 done:
 837         kfree(urb->setup_packet);
 838
 839         kfree_skb(skb);
 840 }
 841
 842 static int btusb_open(struct hci_dev *hdev)
 843 {
 844         struct btusb_data *data = hci_get_drvdata(hdev);
 845         int err;
 846
 847         BT_DBG("%s", hdev->name);
 848
 849         err = usb_autopm_get_interface(data->intf);
 850         if (err < 0)
 851                 return err;
 852
 853         data->intf->needs_remote_wakeup = 1;
 854
 855         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 856                 goto done;
 857
 858         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 859                 goto done;
 860
 861         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 862         if (err < 0)
 863                 goto failed;
 864
 865         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 866         if (err < 0) {
 867                 usb_kill_anchored_urbs(&data->intr_anchor);
 868                 goto failed;
 869         }
 870
 871         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 872         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 873
 874 done:
 875         usb_autopm_put_interface(data->intf);
 876         return 0;
 877
 878 failed:
 879         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 880         clear_bit(HCI_RUNNING, &hdev->flags);
 881         usb_autopm_put_interface(data->intf);
 882         return err;
 883 }
 884
 885 static void btusb_stop_traffic(struct btusb_data *data)
 886 {
 887         usb_kill_anchored_urbs(&data->intr_anchor);
 888         usb_kill_anchored_urbs(&data->bulk_anchor);
 889         usb_kill_anchored_urbs(&data->isoc_anchor);
 890 }
 891
 892 static int btusb_close(struct hci_dev *hdev)
 893 {
 894         struct btusb_data *data = hci_get_drvdata(hdev);
 895         int err;
 896
 897         BT_DBG("%s", hdev->name);
 898
 899         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 900                 return 0;
 901
 902         cancel_work_sync(&data->work);
 903         cancel_work_sync(&data->waker);
 904
 905         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 906         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 907         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 908
 909         btusb_stop_traffic(data);
 910         btusb_free_frags(data);
 911
 912         err = usb_autopm_get_interface(data->intf);
 913         if (err < 0)
 914                 goto failed;
 915
 916         data->intf->needs_remote_wakeup = 0;
 917         usb_autopm_put_interface(data->intf);
 918
 919 failed:
 920         usb_scuttle_anchored_urbs(&data->deferred);
 921         return 0;
 922 }
 923
 924 static int btusb_flush(struct hci_dev *hdev)
 925 {
 926         struct btusb_data *data = hci_get_drvdata(hdev);
 927
 928         BT_DBG("%s", hdev->name);
 929
 930         usb_kill_anchored_urbs(&data->tx_anchor);
 931         btusb_free_frags(data);
 932
 933         return 0;
 934 }
 935
 936 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
 937 {
 938         struct btusb_data *data = hci_get_drvdata(hdev);
 939         struct usb_ctrlrequest *dr;
 940         struct urb *urb;
 941         unsigned int pipe;
 942
 943         urb = usb_alloc_urb(0, GFP_KERNEL);
 944         if (!urb)
 945                 return ERR_PTR(-ENOMEM);
 946
 947         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
 948         if (!dr) {
 949                 usb_free_urb(urb);
 950                 return ERR_PTR(-ENOMEM);
 951         }
 952
 953         dr->bRequestType = data->cmdreq_type;
 954         dr->bRequest     = 0;
 955         dr->wIndex       = 0;
 956         dr->wValue       = 0;
 957         dr->wLength      = __cpu_to_le16(skb->len);
 958
 959         pipe = usb_sndctrlpipe(data->udev, 0x00);
 960
 961         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
 962                              skb->data, skb->len, btusb_tx_complete, skb);
 963
 964         skb->dev = (void *)hdev;
 965
 966         return urb;
 967 }
 968
 969 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
 970 {
 971         struct btusb_data *data = hci_get_drvdata(hdev);
 972         struct urb *urb;
 973         unsigned int pipe;
 974
 975         if (!data->bulk_tx_ep)
 976                 return ERR_PTR(-ENODEV);
 977
 978         urb = usb_alloc_urb(0, GFP_KERNEL);
 979         if (!urb)
 980                 return ERR_PTR(-ENOMEM);
 981
 982         pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
 983
 984         usb_fill_bulk_urb(urb, data->udev, pipe,
 985                           skb->data, skb->len, btusb_tx_complete, skb);
 986
 987         skb->dev = (void *)hdev;
 988
 989         return urb;
 990 }
 991
 992 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
 993 {
 994         struct btusb_data *data = hci_get_drvdata(hdev);
 995         struct urb *urb;
 996         unsigned int pipe;
 997
 998         if (!data->isoc_tx_ep)
 999                 return ERR_PTR(-ENODEV);
1000
1001         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1002         if (!urb)
1003                 return ERR_PTR(-ENOMEM);
1004
1005         pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1006
1007         usb_fill_int_urb(urb, data->udev, pipe,
1008                          skb->data, skb->len, btusb_isoc_tx_complete,
1009                          skb, data->isoc_tx_ep->bInterval);
1010
1011         urb->transfer_flags  = URB_ISO_ASAP;
1012
1013         __fill_isoc_descriptor(urb, skb->len,
1014                                le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1015
1016         skb->dev = (void *)hdev;
1017
1018         return urb;
1019 }
1020
1021 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1022 {
1023         struct btusb_data *data = hci_get_drvdata(hdev);
1024         int err;
1025
1026         usb_anchor_urb(urb, &data->tx_anchor);
1027
1028         err = usb_submit_urb(urb, GFP_KERNEL);
1029         if (err < 0) {
1030                 if (err != -EPERM && err != -ENODEV)
1031                         BT_ERR("%s urb %p submission failed (%d)",
1032                                hdev->name, urb, -err);
1033                 kfree(urb->setup_packet);
1034                 usb_unanchor_urb(urb);
1035         } else {
1036                 usb_mark_last_busy(data->udev);
1037         }
1038
1039         usb_free_urb(urb);
1040         return err;
1041 }
1042
1043 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1044 {
1045         struct btusb_data *data = hci_get_drvdata(hdev);
1046         unsigned long flags;
1047         bool suspending;
1048
1049         spin_lock_irqsave(&data->txlock, flags);
1050         suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1051         if (!suspending)
1052                 data->tx_in_flight++;
1053         spin_unlock_irqrestore(&data->txlock, flags);
1054
1055         if (!suspending)
1056                 return submit_tx_urb(hdev, urb);
1057
1058         usb_anchor_urb(urb, &data->deferred);
1059         schedule_work(&data->waker);
1060
1061         usb_free_urb(urb);
1062         return 0;
1063 }
1064
1065 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1066 {
1067         struct urb *urb;
1068
1069         BT_DBG("%s", hdev->name);
1070
1071         if (!test_bit(HCI_RUNNING, &hdev->flags))
1072                 return -EBUSY;
1073
1074         switch (bt_cb(skb)->pkt_type) {
1075         case HCI_COMMAND_PKT:
1076                 urb = alloc_ctrl_urb(hdev, skb);
1077                 if (IS_ERR(urb))
1078                         return PTR_ERR(urb);
1079
1080                 hdev->stat.cmd_tx++;
1081                 return submit_or_queue_tx_urb(hdev, urb);
1082
1083         case HCI_ACLDATA_PKT:
1084                 urb = alloc_bulk_urb(hdev, skb);
1085                 if (IS_ERR(urb))
1086                         return PTR_ERR(urb);
1087
1088                 hdev->stat.acl_tx++;
1089                 return submit_or_queue_tx_urb(hdev, urb);
1090
1091         case HCI_SCODATA_PKT:
1092                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1093                         return -ENODEV;
1094
1095                 urb = alloc_isoc_urb(hdev, skb);
1096                 if (IS_ERR(urb))
1097                         return PTR_ERR(urb);
1098
1099                 hdev->stat.sco_tx++;
1100                 return submit_tx_urb(hdev, urb);
1101         }
1102
1103         return -EILSEQ;
1104 }
1105
1106 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1107 {
1108         struct btusb_data *data = hci_get_drvdata(hdev);
1109
1110         BT_DBG("%s evt %d", hdev->name, evt);
1111
1112         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1113                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1114                 schedule_work(&data->work);
1115         }
1116 }
1117
1118 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1119 {
1120         struct btusb_data *data = hci_get_drvdata(hdev);
1121         struct usb_interface *intf = data->isoc;
1122         struct usb_endpoint_descriptor *ep_desc;
1123         int i, err;
1124
1125         if (!data->isoc)
1126                 return -ENODEV;
1127
1128         err = usb_set_interface(data->udev, 1, altsetting);
1129         if (err < 0) {
1130                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
1131                 return err;
1132         }
1133
1134         data->isoc_altsetting = altsetting;
1135
1136         data->isoc_tx_ep = NULL;
1137         data->isoc_rx_ep = NULL;
1138
1139         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1140                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1141
1142                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1143                         data->isoc_tx_ep = ep_desc;
1144                         continue;
1145                 }
1146
1147                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1148                         data->isoc_rx_ep = ep_desc;
1149                         continue;
1150                 }
1151         }
1152
1153         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1154                 BT_ERR("%s invalid SCO descriptors", hdev->name);
1155                 return -ENODEV;
1156         }
1157
1158         return 0;
1159 }
1160
1161 static void btusb_work(struct work_struct *work)
1162 {
1163         struct btusb_data *data = container_of(work, struct btusb_data, work);
1164         struct hci_dev *hdev = data->hdev;
1165         int new_alts;
1166         int err;
1167
1168         if (data->sco_num > 0) {
1169                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1170                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1171                         if (err < 0) {
1172                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1173                                 usb_kill_anchored_urbs(&data->isoc_anchor);
1174                                 return;
1175                         }
1176
1177                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1178                 }
1179
1180                 if (hdev->voice_setting & 0x0020) {
1181                         static const int alts[3] = { 2, 4, 5 };
1182
1183                         new_alts = alts[data->sco_num - 1];
1184                 } else {
1185                         new_alts = data->sco_num;
1186                 }
1187
1188                 if (data->isoc_altsetting != new_alts) {
1189                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1190                         usb_kill_anchored_urbs(&data->isoc_anchor);
1191
1192                         if (__set_isoc_interface(hdev, new_alts) < 0)
1193                                 return;
1194                 }
1195
1196                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1197                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1198                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1199                         else
1200                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1201                 }
1202         } else {
1203                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1204                 usb_kill_anchored_urbs(&data->isoc_anchor);
1205
1206                 __set_isoc_interface(hdev, 0);
1207                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1208                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1209         }
1210 }
1211
1212 static void btusb_waker(struct work_struct *work)
1213 {
1214         struct btusb_data *data = container_of(work, struct btusb_data, waker);
1215         int err;
1216
1217         err = usb_autopm_get_interface(data->intf);
1218         if (err < 0)
1219                 return;
1220
1221         usb_autopm_put_interface(data->intf);
1222 }
1223
1224 static int btusb_setup_bcm92035(struct hci_dev *hdev)
1225 {
1226         struct sk_buff *skb;
1227         u8 val = 0x00;
1228
1229         BT_DBG("%s", hdev->name);
1230
1231         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1232         if (IS_ERR(skb))
1233                 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
1234         else
1235                 kfree_skb(skb);
1236
1237         return 0;
1238 }
1239
1240 static int btusb_setup_csr(struct hci_dev *hdev)
1241 {
1242         struct hci_rp_read_local_version *rp;
1243         struct sk_buff *skb;
1244         int ret;
1245
1246         BT_DBG("%s", hdev->name);
1247
1248         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1249                              HCI_INIT_TIMEOUT);
1250         if (IS_ERR(skb)) {
1251                 BT_ERR("Reading local version failed (%ld)", -PTR_ERR(skb));
1252                 return -PTR_ERR(skb);
1253         }
1254
1255         rp = (struct hci_rp_read_local_version *)skb->data;
1256
1257         if (!rp->status) {
1258                 if (le16_to_cpu(rp->manufacturer) != 10) {
1259                         /* Clear the reset quirk since this is not an actual
1260                          * early Bluetooth 1.1 device from CSR.
1261                          */
1262                         clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1263
1264                         /* These fake CSR controllers have all a broken
1265                          * stored link key handling and so just disable it.
1266                          */
1267                         set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY,
1268                                 &hdev->quirks);
1269                 }
1270         }
1271
1272         ret = -bt_to_errno(rp->status);
1273
1274         kfree_skb(skb);
1275
1276         return ret;
1277 }
1278
1279 struct intel_version {
1280         u8 status;
1281         u8 hw_platform;
1282         u8 hw_variant;
1283         u8 hw_revision;
1284         u8 fw_variant;
1285         u8 fw_revision;
1286         u8 fw_build_num;
1287         u8 fw_build_ww;
1288         u8 fw_build_yy;
1289         u8 fw_patch_num;
1290 } __packed;
1291
1292 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1293                                                        struct intel_version *ver)
1294 {
1295         const struct firmware *fw;
1296         char fwname[64];
1297         int ret;
1298
1299         snprintf(fwname, sizeof(fwname),
1300                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1301                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
1302                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1303                  ver->fw_build_ww, ver->fw_build_yy);
1304
1305         ret = request_firmware(&fw, fwname, &hdev->dev);
1306         if (ret < 0) {
1307                 if (ret == -EINVAL) {
1308                         BT_ERR("%s Intel firmware file request failed (%d)",
1309                                hdev->name, ret);
1310                         return NULL;
1311                 }
1312
1313                 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1314                        hdev->name, fwname, ret);
1315
1316                 /* If the correct firmware patch file is not found, use the
1317                  * default firmware patch file instead
1318                  */
1319                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1320                          ver->hw_platform, ver->hw_variant);
1321                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1322                         BT_ERR("%s failed to open default Intel fw file: %s",
1323                                hdev->name, fwname);
1324                         return NULL;
1325                 }
1326         }
1327
1328         BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1329
1330         return fw;
1331 }
1332
1333 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1334                                       const struct firmware *fw,
1335                                       const u8 **fw_ptr, int *disable_patch)
1336 {
1337         struct sk_buff *skb;
1338         struct hci_command_hdr *cmd;
1339         const u8 *cmd_param;
1340         struct hci_event_hdr *evt = NULL;
1341         const u8 *evt_param = NULL;
1342         int remain = fw->size - (*fw_ptr - fw->data);
1343
1344         /* The first byte indicates the types of the patch command or event.
1345          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1346          * in the current firmware buffer doesn't start with 0x01 or
1347          * the size of remain buffer is smaller than HCI command header,
1348          * the firmware file is corrupted and it should stop the patching
1349          * process.
1350          */
1351         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1352                 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1353                 return -EINVAL;
1354         }
1355         (*fw_ptr)++;
1356         remain--;
1357
1358         cmd = (struct hci_command_hdr *)(*fw_ptr);
1359         *fw_ptr += sizeof(*cmd);
1360         remain -= sizeof(*cmd);
1361
1362         /* Ensure that the remain firmware data is long enough than the length
1363          * of command parameter. If not, the firmware file is corrupted.
1364          */
1365         if (remain < cmd->plen) {
1366                 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1367                 return -EFAULT;
1368         }
1369
1370         /* If there is a command that loads a patch in the firmware
1371          * file, then enable the patch upon success, otherwise just
1372          * disable the manufacturer mode, for example patch activation
1373          * is not required when the default firmware patch file is used
1374          * because there are no patch data to load.
1375          */
1376         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1377                 *disable_patch = 0;
1378
1379         cmd_param = *fw_ptr;
1380         *fw_ptr += cmd->plen;
1381         remain -= cmd->plen;
1382
1383         /* This reads the expected events when the above command is sent to the
1384          * device. Some vendor commands expects more than one events, for
1385          * example command status event followed by vendor specific event.
1386          * For this case, it only keeps the last expected event. so the command
1387          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1388          * last expected event.
1389          */
1390         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1391                 (*fw_ptr)++;
1392                 remain--;
1393
1394                 evt = (struct hci_event_hdr *)(*fw_ptr);
1395                 *fw_ptr += sizeof(*evt);
1396                 remain -= sizeof(*evt);
1397
1398                 if (remain < evt->plen) {
1399                         BT_ERR("%s Intel fw corrupted: invalid evt len",
1400                                hdev->name);
1401                         return -EFAULT;
1402                 }
1403
1404                 evt_param = *fw_ptr;
1405                 *fw_ptr += evt->plen;
1406                 remain -= evt->plen;
1407         }
1408
1409         /* Every HCI commands in the firmware file has its correspond event.
1410          * If event is not found or remain is smaller than zero, the firmware
1411          * file is corrupted.
1412          */
1413         if (!evt || !evt_param || remain < 0) {
1414                 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1415                 return -EFAULT;
1416         }
1417
1418         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1419                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1420         if (IS_ERR(skb)) {
1421                 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1422                        hdev->name, cmd->opcode, PTR_ERR(skb));
1423                 return PTR_ERR(skb);
1424         }
1425
1426         /* It ensures that the returned event matches the event data read from
1427          * the firmware file. At fist, it checks the length and then
1428          * the contents of the event.
1429          */
1430         if (skb->len != evt->plen) {
1431                 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1432                        le16_to_cpu(cmd->opcode));
1433                 kfree_skb(skb);
1434                 return -EFAULT;
1435         }
1436
1437         if (memcmp(skb->data, evt_param, evt->plen)) {
1438                 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1439                        hdev->name, le16_to_cpu(cmd->opcode));
1440                 kfree_skb(skb);
1441                 return -EFAULT;
1442         }
1443         kfree_skb(skb);
1444
1445         return 0;
1446 }
1447
1448 #define BDADDR_INTEL (&(bdaddr_t) {{0x00, 0x8b, 0x9e, 0x19, 0x03, 0x00}})
1449
1450 static int btusb_check_bdaddr_intel(struct hci_dev *hdev)
1451 {
1452         struct sk_buff *skb;
1453         struct hci_rp_read_bd_addr *rp;
1454
1455         skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
1456                              HCI_INIT_TIMEOUT);
1457         if (IS_ERR(skb)) {
1458                 BT_ERR("%s reading Intel device address failed (%ld)",
1459                        hdev->name, PTR_ERR(skb));
1460                 return PTR_ERR(skb);
1461         }
1462
1463         if (skb->len != sizeof(*rp)) {
1464                 BT_ERR("%s Intel device address length mismatch", hdev->name);
1465                 kfree_skb(skb);
1466                 return -EIO;
1467         }
1468
1469         rp = (struct hci_rp_read_bd_addr *)skb->data;
1470         if (rp->status) {
1471                 BT_ERR("%s Intel device address result failed (%02x)",
1472                        hdev->name, rp->status);
1473                 kfree_skb(skb);
1474                 return -bt_to_errno(rp->status);
1475         }
1476
1477         /* For some Intel based controllers, the default Bluetooth device
1478          * address 00:03:19:9E:8B:00 can be found. These controllers are
1479          * fully operational, but have the danger of duplicate addresses
1480          * and that in turn can cause problems with Bluetooth operation.
1481          */
1482         if (!bacmp(&rp->bdaddr, BDADDR_INTEL)) {
1483                 BT_ERR("%s found Intel default device address (%pMR)",
1484                        hdev->name, &rp->bdaddr);
1485                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
1486         }
1487
1488         kfree_skb(skb);
1489
1490         return 0;
1491 }
1492
1493 static int btusb_setup_intel(struct hci_dev *hdev)
1494 {
1495         struct sk_buff *skb;
1496         const struct firmware *fw;
1497         const u8 *fw_ptr;
1498         int disable_patch;
1499         struct intel_version *ver;
1500
1501         const u8 mfg_enable[] = { 0x01, 0x00 };
1502         const u8 mfg_disable[] = { 0x00, 0x00 };
1503         const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
1504         const u8 mfg_reset_activate[] = { 0x00, 0x02 };
1505
1506         BT_DBG("%s", hdev->name);
1507
1508         /* The controller has a bug with the first HCI command sent to it
1509          * returning number of completed commands as zero. This would stall the
1510          * command processing in the Bluetooth core.
1511          *
1512          * As a workaround, send HCI Reset command first which will reset the
1513          * number of completed commands and allow normal command processing
1514          * from now on.
1515          */
1516         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1517         if (IS_ERR(skb)) {
1518                 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1519                        hdev->name, PTR_ERR(skb));
1520                 return PTR_ERR(skb);
1521         }
1522         kfree_skb(skb);
1523
1524         /* Read Intel specific controller version first to allow selection of
1525          * which firmware file to load.
1526          *
1527          * The returned information are hardware variant and revision plus
1528          * firmware variant, revision and build number.
1529          */
1530         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1531         if (IS_ERR(skb)) {
1532                 BT_ERR("%s reading Intel fw version command failed (%ld)",
1533                        hdev->name, PTR_ERR(skb));
1534                 return PTR_ERR(skb);
1535         }
1536
1537         if (skb->len != sizeof(*ver)) {
1538                 BT_ERR("%s Intel version event length mismatch", hdev->name);
1539                 kfree_skb(skb);
1540                 return -EIO;
1541         }
1542
1543         ver = (struct intel_version *)skb->data;
1544         if (ver->status) {
1545                 BT_ERR("%s Intel fw version event failed (%02x)", hdev->name,
1546                        ver->status);
1547                 kfree_skb(skb);
1548                 return -bt_to_errno(ver->status);
1549         }
1550
1551         BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1552                 hdev->name, ver->hw_platform, ver->hw_variant,
1553                 ver->hw_revision, ver->fw_variant,  ver->fw_revision,
1554                 ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
1555                 ver->fw_patch_num);
1556
1557         /* fw_patch_num indicates the version of patch the device currently
1558          * have. If there is no patch data in the device, it is always 0x00.
1559          * So, if it is other than 0x00, no need to patch the deivce again.
1560          */
1561         if (ver->fw_patch_num) {
1562                 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1563                         hdev->name, ver->fw_patch_num);
1564                 kfree_skb(skb);
1565                 btusb_check_bdaddr_intel(hdev);
1566                 return 0;
1567         }
1568
1569         /* Opens the firmware patch file based on the firmware version read
1570          * from the controller. If it fails to open the matching firmware
1571          * patch file, it tries to open the default firmware patch file.
1572          * If no patch file is found, allow the device to operate without
1573          * a patch.
1574          */
1575         fw = btusb_setup_intel_get_fw(hdev, ver);
1576         if (!fw) {
1577                 kfree_skb(skb);
1578                 btusb_check_bdaddr_intel(hdev);
1579                 return 0;
1580         }
1581         fw_ptr = fw->data;
1582
1583         /* This Intel specific command enables the manufacturer mode of the
1584          * controller.
1585          *
1586          * Only while this mode is enabled, the driver can download the
1587          * firmware patch data and configuration parameters.
1588          */
1589         skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
1590         if (IS_ERR(skb)) {
1591                 BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
1592                        hdev->name, PTR_ERR(skb));
1593                 release_firmware(fw);
1594                 return PTR_ERR(skb);
1595         }
1596
1597         if (skb->data[0]) {
1598                 u8 evt_status = skb->data[0];
1599
1600                 BT_ERR("%s enable Intel manufacturer mode event failed (%02x)",
1601                        hdev->name, evt_status);
1602                 kfree_skb(skb);
1603                 release_firmware(fw);
1604                 return -bt_to_errno(evt_status);
1605         }
1606         kfree_skb(skb);
1607
1608         disable_patch = 1;
1609
1610         /* The firmware data file consists of list of Intel specific HCI
1611          * commands and its expected events. The first byte indicates the
1612          * type of the message, either HCI command or HCI event.
1613          *
1614          * It reads the command and its expected event from the firmware file,
1615          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1616          * the returned event is compared with the event read from the firmware
1617          * file and it will continue until all the messages are downloaded to
1618          * the controller.
1619          *
1620          * Once the firmware patching is completed successfully,
1621          * the manufacturer mode is disabled with reset and activating the
1622          * downloaded patch.
1623          *
1624          * If the firmware patching fails, the manufacturer mode is
1625          * disabled with reset and deactivating the patch.
1626          *
1627          * If the default patch file is used, no reset is done when disabling
1628          * the manufacturer.
1629          */
1630         while (fw->size > fw_ptr - fw->data) {
1631                 int ret;
1632
1633                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1634                                                  &disable_patch);
1635                 if (ret < 0)
1636                         goto exit_mfg_deactivate;
1637         }
1638
1639         release_firmware(fw);
1640
1641         if (disable_patch)
1642                 goto exit_mfg_disable;
1643
1644         /* Patching completed successfully and disable the manufacturer mode
1645          * with reset and activate the downloaded firmware patches.
1646          */
1647         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
1648                              mfg_reset_activate, HCI_INIT_TIMEOUT);
1649         if (IS_ERR(skb)) {
1650                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1651                        hdev->name, PTR_ERR(skb));
1652                 return PTR_ERR(skb);
1653         }
1654         kfree_skb(skb);
1655
1656         BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1657                 hdev->name);
1658
1659         btusb_check_bdaddr_intel(hdev);
1660         return 0;
1661
1662 exit_mfg_disable:
1663         /* Disable the manufacturer mode without reset */
1664         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
1665                              HCI_INIT_TIMEOUT);
1666         if (IS_ERR(skb)) {
1667                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1668                        hdev->name, PTR_ERR(skb));
1669                 return PTR_ERR(skb);
1670         }
1671         kfree_skb(skb);
1672
1673         BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1674
1675         btusb_check_bdaddr_intel(hdev);
1676         return 0;
1677
1678 exit_mfg_deactivate:
1679         release_firmware(fw);
1680
1681         /* Patching failed. Disable the manufacturer mode with reset and
1682          * deactivate the downloaded firmware patches.
1683          */
1684         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
1685                              mfg_reset_deactivate, HCI_INIT_TIMEOUT);
1686         if (IS_ERR(skb)) {
1687                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1688                        hdev->name, PTR_ERR(skb));
1689                 return PTR_ERR(skb);
1690         }
1691         kfree_skb(skb);
1692
1693         BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1694                 hdev->name);
1695
1696         btusb_check_bdaddr_intel(hdev);
1697         return 0;
1698 }
1699
1700 static int btusb_set_bdaddr_intel(struct hci_dev *hdev, const bdaddr_t *bdaddr)
1701 {
1702         struct sk_buff *skb;
1703         long ret;
1704
1705         skb = __hci_cmd_sync(hdev, 0xfc31, 6, bdaddr, HCI_INIT_TIMEOUT);
1706         if (IS_ERR(skb)) {
1707                 ret = PTR_ERR(skb);
1708                 BT_ERR("%s: changing Intel device address failed (%ld)",
1709                        hdev->name, ret);
1710                 return ret;
1711         }
1712         kfree_skb(skb);
1713
1714         return 0;
1715 }
1716
1717 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
1718                                     const bdaddr_t *bdaddr)
1719 {
1720         struct sk_buff *skb;
1721         u8 buf[8];
1722         long ret;
1723
1724         buf[0] = 0xfe;
1725         buf[1] = sizeof(bdaddr_t);
1726         memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
1727
1728         skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
1729         if (IS_ERR(skb)) {
1730                 ret = PTR_ERR(skb);
1731                 BT_ERR("%s: changing Marvell device address failed (%ld)",
1732                        hdev->name, ret);
1733                 return ret;
1734         }
1735         kfree_skb(skb);
1736
1737         return 0;
1738 }
1739
1740 #define BDADDR_BCM20702A0 (&(bdaddr_t) {{0x00, 0xa0, 0x02, 0x70, 0x20, 0x00}})
1741
1742 static int btusb_setup_bcm_patchram(struct hci_dev *hdev)
1743 {
1744         struct btusb_data *data = hci_get_drvdata(hdev);
1745         struct usb_device *udev = data->udev;
1746         char fw_name[64];
1747         const struct firmware *fw;
1748         const u8 *fw_ptr;
1749         size_t fw_size;
1750         const struct hci_command_hdr *cmd;
1751         const u8 *cmd_param;
1752         u16 opcode;
1753         struct sk_buff *skb;
1754         struct hci_rp_read_local_version *ver;
1755         struct hci_rp_read_bd_addr *bda;
1756         long ret;
1757
1758         snprintf(fw_name, sizeof(fw_name), "brcm/%s-%04x-%04x.hcd",
1759                  udev->product ? udev->product : "BCM",
1760                  le16_to_cpu(udev->descriptor.idVendor),
1761                  le16_to_cpu(udev->descriptor.idProduct));
1762
1763         ret = request_firmware(&fw, fw_name, &hdev->dev);
1764         if (ret < 0) {
1765                 BT_INFO("%s: BCM: patch %s not found", hdev->name, fw_name);
1766                 return 0;
1767         }
1768
1769         /* Reset */
1770         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1771         if (IS_ERR(skb)) {
1772                 ret = PTR_ERR(skb);
1773                 BT_ERR("%s: HCI_OP_RESET failed (%ld)", hdev->name, ret);
1774                 goto done;
1775         }
1776         kfree_skb(skb);
1777
1778         /* Read Local Version Info */
1779         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1780                              HCI_INIT_TIMEOUT);
1781         if (IS_ERR(skb)) {
1782                 ret = PTR_ERR(skb);
1783                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION failed (%ld)",
1784                        hdev->name, ret);
1785                 goto done;
1786         }
1787
1788         if (skb->len != sizeof(*ver)) {
1789                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION event length mismatch",
1790                        hdev->name);
1791                 kfree_skb(skb);
1792                 ret = -EIO;
1793                 goto done;
1794         }
1795
1796         ver = (struct hci_rp_read_local_version *)skb->data;
1797         BT_INFO("%s: BCM: patching hci_ver=%02x hci_rev=%04x lmp_ver=%02x "
1798                 "lmp_subver=%04x", hdev->name, ver->hci_ver, ver->hci_rev,
1799                 ver->lmp_ver, ver->lmp_subver);
1800         kfree_skb(skb);
1801
1802         /* Start Download */
1803         skb = __hci_cmd_sync(hdev, 0xfc2e, 0, NULL, HCI_INIT_TIMEOUT);
1804         if (IS_ERR(skb)) {
1805                 ret = PTR_ERR(skb);
1806                 BT_ERR("%s: BCM: Download Minidrv command failed (%ld)",
1807                        hdev->name, ret);
1808                 goto reset_fw;
1809         }
1810         kfree_skb(skb);
1811
1812         /* 50 msec delay after Download Minidrv completes */
1813         msleep(50);
1814
1815         fw_ptr = fw->data;
1816         fw_size = fw->size;
1817
1818         while (fw_size >= sizeof(*cmd)) {
1819                 cmd = (struct hci_command_hdr *)fw_ptr;
1820                 fw_ptr += sizeof(*cmd);
1821                 fw_size -= sizeof(*cmd);
1822
1823                 if (fw_size < cmd->plen) {
1824                         BT_ERR("%s: BCM: patch %s is corrupted",
1825                                hdev->name, fw_name);
1826                         ret = -EINVAL;
1827                         goto reset_fw;
1828                 }
1829
1830                 cmd_param = fw_ptr;
1831                 fw_ptr += cmd->plen;
1832                 fw_size -= cmd->plen;
1833
1834                 opcode = le16_to_cpu(cmd->opcode);
1835
1836                 skb = __hci_cmd_sync(hdev, opcode, cmd->plen, cmd_param,
1837                                      HCI_INIT_TIMEOUT);
1838                 if (IS_ERR(skb)) {
1839                         ret = PTR_ERR(skb);
1840                         BT_ERR("%s: BCM: patch command %04x failed (%ld)",
1841                                hdev->name, opcode, ret);
1842                         goto reset_fw;
1843                 }
1844                 kfree_skb(skb);
1845         }
1846
1847         /* 250 msec delay after Launch Ram completes */
1848         msleep(250);
1849
1850 reset_fw:
1851         /* Reset */
1852         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1853         if (IS_ERR(skb)) {
1854                 ret = PTR_ERR(skb);
1855                 BT_ERR("%s: HCI_OP_RESET failed (%ld)", hdev->name, ret);
1856                 goto done;
1857         }
1858         kfree_skb(skb);
1859
1860         /* Read Local Version Info */
1861         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1862                              HCI_INIT_TIMEOUT);
1863         if (IS_ERR(skb)) {
1864                 ret = PTR_ERR(skb);
1865                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION failed (%ld)",
1866                        hdev->name, ret);
1867                 goto done;
1868         }
1869
1870         if (skb->len != sizeof(*ver)) {
1871                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION event length mismatch",
1872                        hdev->name);
1873                 kfree_skb(skb);
1874                 ret = -EIO;
1875                 goto done;
1876         }
1877
1878         ver = (struct hci_rp_read_local_version *)skb->data;
1879         BT_INFO("%s: BCM: firmware hci_ver=%02x hci_rev=%04x lmp_ver=%02x "
1880                 "lmp_subver=%04x", hdev->name, ver->hci_ver, ver->hci_rev,
1881                 ver->lmp_ver, ver->lmp_subver);
1882         kfree_skb(skb);
1883
1884         /* Read BD Address */
1885         skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
1886                              HCI_INIT_TIMEOUT);
1887         if (IS_ERR(skb)) {
1888                 ret = PTR_ERR(skb);
1889                 BT_ERR("%s: HCI_OP_READ_BD_ADDR failed (%ld)",
1890                        hdev->name, ret);
1891                 goto done;
1892         }
1893
1894         if (skb->len != sizeof(*bda)) {
1895                 BT_ERR("%s: HCI_OP_READ_BD_ADDR event length mismatch",
1896                        hdev->name);
1897                 kfree_skb(skb);
1898                 ret = -EIO;
1899                 goto done;
1900         }
1901
1902         bda = (struct hci_rp_read_bd_addr *)skb->data;
1903         if (bda->status) {
1904                 BT_ERR("%s: HCI_OP_READ_BD_ADDR error status (%02x)",
1905                        hdev->name, bda->status);
1906                 kfree_skb(skb);
1907                 ret = -bt_to_errno(bda->status);
1908                 goto done;
1909         }
1910
1911         /* The address 00:20:70:02:A0:00 indicates a BCM20702A0 controller
1912          * with no configured address.
1913          */
1914         if (!bacmp(&bda->bdaddr, BDADDR_BCM20702A0)) {
1915                 BT_INFO("%s: BCM: using default device address (%pMR)",
1916                         hdev->name, &bda->bdaddr);
1917                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
1918         }
1919
1920         kfree_skb(skb);
1921
1922 done:
1923         release_firmware(fw);
1924
1925         return ret;
1926 }
1927
1928 static int btusb_set_bdaddr_bcm(struct hci_dev *hdev, const bdaddr_t *bdaddr)
1929 {
1930         struct sk_buff *skb;
1931         long ret;
1932
1933         skb = __hci_cmd_sync(hdev, 0xfc01, 6, bdaddr, HCI_INIT_TIMEOUT);
1934         if (IS_ERR(skb)) {
1935                 ret = PTR_ERR(skb);
1936                 BT_ERR("%s: BCM: Change address command failed (%ld)",
1937                        hdev->name, ret);
1938                 return ret;
1939         }
1940         kfree_skb(skb);
1941
1942         return 0;
1943 }
1944
1945 static int btusb_probe(struct usb_interface *intf,
1946                        const struct usb_device_id *id)
1947 {
1948         struct usb_endpoint_descriptor *ep_desc;
1949         struct btusb_data *data;
1950         struct hci_dev *hdev;
1951         int i, err;
1952
1953         BT_DBG("intf %p id %p", intf, id);
1954
1955         /* interface numbers are hardcoded in the spec */
1956         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
1957                 return -ENODEV;
1958
1959         if (!id->driver_info) {
1960                 const struct usb_device_id *match;
1961
1962                 match = usb_match_id(intf, blacklist_table);
1963                 if (match)
1964                         id = match;
1965         }
1966
1967         if (id->driver_info == BTUSB_IGNORE)
1968                 return -ENODEV;
1969
1970         if (id->driver_info & BTUSB_ATH3012) {
1971                 struct usb_device *udev = interface_to_usbdev(intf);
1972
1973                 /* Old firmware would otherwise let ath3k driver load
1974                  * patch and sysconfig files */
1975                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
1976                         return -ENODEV;
1977         }
1978
1979         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
1980         if (!data)
1981                 return -ENOMEM;
1982
1983         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1984                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1985
1986                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
1987                         data->intr_ep = ep_desc;
1988                         continue;
1989                 }
1990
1991                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
1992                         data->bulk_tx_ep = ep_desc;
1993                         continue;
1994                 }
1995
1996                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
1997                         data->bulk_rx_ep = ep_desc;
1998                         continue;
1999                 }
2000         }
2001
2002         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
2003                 return -ENODEV;
2004
2005         data->cmdreq_type = USB_TYPE_CLASS;
2006
2007         data->udev = interface_to_usbdev(intf);
2008         data->intf = intf;
2009
2010         INIT_WORK(&data->work, btusb_work);
2011         INIT_WORK(&data->waker, btusb_waker);
2012         init_usb_anchor(&data->deferred);
2013         init_usb_anchor(&data->tx_anchor);
2014         spin_lock_init(&data->txlock);
2015
2016         init_usb_anchor(&data->intr_anchor);
2017         init_usb_anchor(&data->bulk_anchor);
2018         init_usb_anchor(&data->isoc_anchor);
2019         spin_lock_init(&data->rxlock);
2020
2021         data->recv_bulk = btusb_recv_bulk;
2022
2023         hdev = hci_alloc_dev();
2024         if (!hdev)
2025                 return -ENOMEM;
2026
2027         hdev->bus = HCI_USB;
2028         hci_set_drvdata(hdev, data);
2029
2030         data->hdev = hdev;
2031
2032         SET_HCIDEV_DEV(hdev, &intf->dev);
2033
2034         hdev->open   = btusb_open;
2035         hdev->close  = btusb_close;
2036         hdev->flush  = btusb_flush;
2037         hdev->send   = btusb_send_frame;
2038         hdev->notify = btusb_notify;
2039
2040         if (id->driver_info & BTUSB_BCM92035)
2041                 hdev->setup = btusb_setup_bcm92035;
2042
2043         if (id->driver_info & BTUSB_BCM_PATCHRAM) {
2044                 hdev->setup = btusb_setup_bcm_patchram;
2045                 hdev->set_bdaddr = btusb_set_bdaddr_bcm;
2046                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2047         }
2048
2049         if (id->driver_info & BTUSB_INTEL) {
2050                 hdev->setup = btusb_setup_intel;
2051                 hdev->set_bdaddr = btusb_set_bdaddr_intel;
2052         }
2053
2054         if (id->driver_info & BTUSB_MARVELL)
2055                 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
2056
2057         if (id->driver_info & BTUSB_INTEL_BOOT)
2058                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
2059
2060         /* Interface numbers are hardcoded in the specification */
2061         data->isoc = usb_ifnum_to_if(data->udev, 1);
2062
2063         if (!reset)
2064                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2065
2066         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
2067                 if (!disable_scofix)
2068                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
2069         }
2070
2071         if (id->driver_info & BTUSB_BROKEN_ISOC)
2072                 data->isoc = NULL;
2073
2074         if (id->driver_info & BTUSB_DIGIANSWER) {
2075                 data->cmdreq_type = USB_TYPE_VENDOR;
2076                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2077         }
2078
2079         if (id->driver_info & BTUSB_CSR) {
2080                 struct usb_device *udev = data->udev;
2081                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
2082
2083                 /* Old firmware would otherwise execute USB reset */
2084                 if (bcdDevice < 0x117)
2085                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2086
2087                 /* Fake CSR devices with broken commands */
2088                 if (bcdDevice <= 0x100)
2089                         hdev->setup = btusb_setup_csr;
2090         }
2091
2092         if (id->driver_info & BTUSB_SNIFFER) {
2093                 struct usb_device *udev = data->udev;
2094
2095                 /* New sniffer firmware has crippled HCI interface */
2096                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
2097                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
2098         }
2099
2100         if (id->driver_info & BTUSB_INTEL_BOOT) {
2101                 /* A bug in the bootloader causes that interrupt interface is
2102                  * only enabled after receiving SetInterface(0, AltSetting=0).
2103                  */
2104                 err = usb_set_interface(data->udev, 0, 0);
2105                 if (err < 0) {
2106                         BT_ERR("failed to set interface 0, alt 0 %d", err);
2107                         hci_free_dev(hdev);
2108                         return err;
2109                 }
2110         }
2111
2112         if (data->isoc) {
2113                 err = usb_driver_claim_interface(&btusb_driver,
2114                                                  data->isoc, data);
2115                 if (err < 0) {
2116                         hci_free_dev(hdev);
2117                         return err;
2118                 }
2119         }
2120
2121         err = hci_register_dev(hdev);
2122         if (err < 0) {
2123                 hci_free_dev(hdev);
2124                 return err;
2125         }
2126
2127         usb_set_intfdata(intf, data);
2128
2129         return 0;
2130 }
2131
2132 static void btusb_disconnect(struct usb_interface *intf)
2133 {
2134         struct btusb_data *data = usb_get_intfdata(intf);
2135         struct hci_dev *hdev;
2136
2137         BT_DBG("intf %p", intf);
2138
2139         if (!data)
2140                 return;
2141
2142         hdev = data->hdev;
2143         usb_set_intfdata(data->intf, NULL);
2144
2145         if (data->isoc)
2146                 usb_set_intfdata(data->isoc, NULL);
2147
2148         hci_unregister_dev(hdev);
2149
2150         if (intf == data->isoc)
2151                 usb_driver_release_interface(&btusb_driver, data->intf);
2152         else if (data->isoc)
2153                 usb_driver_release_interface(&btusb_driver, data->isoc);
2154
2155         btusb_free_frags(data);
2156         hci_free_dev(hdev);
2157 }
2158
2159 #ifdef CONFIG_PM
2160 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
2161 {
2162         struct btusb_data *data = usb_get_intfdata(intf);
2163
2164         BT_DBG("intf %p", intf);
2165
2166         if (data->suspend_count++)
2167                 return 0;
2168
2169         spin_lock_irq(&data->txlock);
2170         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
2171                 set_bit(BTUSB_SUSPENDING, &data->flags);
2172                 spin_unlock_irq(&data->txlock);
2173         } else {
2174                 spin_unlock_irq(&data->txlock);
2175                 data->suspend_count--;
2176                 return -EBUSY;
2177         }
2178
2179         cancel_work_sync(&data->work);
2180
2181         btusb_stop_traffic(data);
2182         usb_kill_anchored_urbs(&data->tx_anchor);
2183
2184         return 0;
2185 }
2186
2187 static void play_deferred(struct btusb_data *data)
2188 {
2189         struct urb *urb;
2190         int err;
2191
2192         while ((urb = usb_get_from_anchor(&data->deferred))) {
2193                 err = usb_submit_urb(urb, GFP_ATOMIC);
2194                 if (err < 0)
2195                         break;
2196
2197                 data->tx_in_flight++;
2198         }
2199         usb_scuttle_anchored_urbs(&data->deferred);
2200 }
2201
2202 static int btusb_resume(struct usb_interface *intf)
2203 {
2204         struct btusb_data *data = usb_get_intfdata(intf);
2205         struct hci_dev *hdev = data->hdev;
2206         int err = 0;
2207
2208         BT_DBG("intf %p", intf);
2209
2210         if (--data->suspend_count)
2211                 return 0;
2212
2213         if (!test_bit(HCI_RUNNING, &hdev->flags))
2214                 goto done;
2215
2216         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
2217                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
2218                 if (err < 0) {
2219                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
2220                         goto failed;
2221                 }
2222         }
2223
2224         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
2225                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
2226                 if (err < 0) {
2227                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
2228                         goto failed;
2229                 }
2230
2231                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
2232         }
2233
2234         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
2235                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
2236                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
2237                 else
2238                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
2239         }
2240
2241         spin_lock_irq(&data->txlock);
2242         play_deferred(data);
2243         clear_bit(BTUSB_SUSPENDING, &data->flags);
2244         spin_unlock_irq(&data->txlock);
2245         schedule_work(&data->work);
2246
2247         return 0;
2248
2249 failed:
2250         usb_scuttle_anchored_urbs(&data->deferred);
2251 done:
2252         spin_lock_irq(&data->txlock);
2253         clear_bit(BTUSB_SUSPENDING, &data->flags);
2254         spin_unlock_irq(&data->txlock);
2255
2256         return err;
2257 }
2258 #endif
2259
2260 static struct usb_driver btusb_driver = {
2261         .name           = "btusb",
2262         .probe          = btusb_probe,
2263         .disconnect     = btusb_disconnect,
2264 #ifdef CONFIG_PM
2265         .suspend        = btusb_suspend,
2266         .resume         = btusb_resume,
2267 #endif
2268         .id_table       = btusb_table,
2269         .supports_autosuspend = 1,
2270         .disable_hub_initiated_lpm = 1,
2271 };
2272
2273 module_usb_driver(btusb_driver);
2274
2275 module_param(disable_scofix, bool, 0644);
2276 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
2277
2278 module_param(force_scofix, bool, 0644);
2279 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
2280
2281 module_param(reset, bool, 0644);
2282 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
2283
2284 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
2285 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
2286 MODULE_VERSION(VERSION);
2287 MODULE_LICENSE("GPL");