drivers/bluetooth/btusb.c

   1 /*
   2  *
   3  *  Generic Bluetooth USB driver
   4  *
   5  *  Copyright (C) 2005-2008  Marcel Holtmann <marcel@holtmann.org>
   6  *
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, write to the Free Software
  20  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  *
  22  */
  23
  24 #include <linux/module.h>
  25 #include <linux/usb.h>
  26 #include <linux/firmware.h>
  27
  28 #include <net/bluetooth/bluetooth.h>
  29 #include <net/bluetooth/hci_core.h>
  30
  31 #define VERSION "0.6"
  32
  33 static bool disable_scofix;
  34 static bool force_scofix;
  35
  36 static bool reset = 1;
  37
  38 static struct usb_driver btusb_driver;
  39
  40 #define BTUSB_IGNORE            0x01
  41 #define BTUSB_DIGIANSWER        0x02
  42 #define BTUSB_CSR               0x04
  43 #define BTUSB_SNIFFER           0x08
  44 #define BTUSB_BCM92035          0x10
  45 #define BTUSB_BROKEN_ISOC       0x20
  46 #define BTUSB_WRONG_SCO_MTU     0x40
  47 #define BTUSB_ATH3012           0x80
  48 #define BTUSB_INTEL             0x100
  49 #define BTUSB_INTEL_BOOT        0x200
  50 #define BTUSB_BCM_PATCHRAM      0x400
  51 #define BTUSB_MARVELL           0x800
  52 #define BTUSB_SWAVE             0x1000
  53
  54 static const struct usb_device_id btusb_table[] = {
  55         /* Generic Bluetooth USB device */
  56         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  57
  58         /* Apple-specific (Broadcom) devices */
  59         { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01) },
  60
  61         /* MediaTek MT76x0E */
  62         { USB_DEVICE(0x0e8d, 0x763f) },
  63
  64         /* Broadcom SoftSailing reporting vendor specific */
  65         { USB_DEVICE(0x0a5c, 0x21e1) },
  66
  67         /* Apple MacBookPro 7,1 */
  68         { USB_DEVICE(0x05ac, 0x8213) },
  69
  70         /* Apple iMac11,1 */
  71         { USB_DEVICE(0x05ac, 0x8215) },
  72
  73         /* Apple MacBookPro6,2 */
  74         { USB_DEVICE(0x05ac, 0x8218) },
  75
  76         /* Apple MacBookAir3,1, MacBookAir3,2 */
  77         { USB_DEVICE(0x05ac, 0x821b) },
  78
  79         /* Apple MacBookAir4,1 */
  80         { USB_DEVICE(0x05ac, 0x821f) },
  81
  82         /* Apple MacBookPro8,2 */
  83         { USB_DEVICE(0x05ac, 0x821a) },
  84
  85         /* Apple MacMini5,1 */
  86         { USB_DEVICE(0x05ac, 0x8281) },
  87
  88         /* AVM BlueFRITZ! USB v2.0 */
  89         { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE },
  90
  91         /* Bluetooth Ultraport Module from IBM */
  92         { USB_DEVICE(0x04bf, 0x030a) },
  93
  94         /* ALPS Modules with non-standard id */
  95         { USB_DEVICE(0x044e, 0x3001) },
  96         { USB_DEVICE(0x044e, 0x3002) },
  97
  98         /* Ericsson with non-standard id */
  99         { USB_DEVICE(0x0bdb, 0x1002) },
 100
 101         /* Canyon CN-BTU1 with HID interfaces */
 102         { USB_DEVICE(0x0c10, 0x0000) },
 103
 104         /* Broadcom BCM20702A0 */
 105         { USB_DEVICE(0x0489, 0xe042) },
 106         { USB_DEVICE(0x04ca, 0x2003) },
 107         { USB_DEVICE(0x0b05, 0x17b5) },
 108         { USB_DEVICE(0x0b05, 0x17cb) },
 109         { USB_DEVICE(0x413c, 0x8197) },
 110         { USB_DEVICE(0x13d3, 0x3404),
 111           .driver_info = BTUSB_BCM_PATCHRAM },
 112
 113         /* Foxconn - Hon Hai */
 114         { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01),
 115           .driver_info = BTUSB_BCM_PATCHRAM },
 116
 117         /* Broadcom devices with vendor specific id */
 118         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
 119           .driver_info = BTUSB_BCM_PATCHRAM },
 120
 121         /* ASUSTek Computer - Broadcom based */
 122         { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01) },
 123
 124         /* Belkin F8065bf - Broadcom based */
 125         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01) },
 126
 127         /* IMC Networks - Broadcom based */
 128         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01) },
 129
 130         /* Intel Bluetooth USB Bootloader (RAM module) */
 131         { USB_DEVICE(0x8087, 0x0a5a),
 132           .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
 133
 134         { }     /* Terminating entry */
 135 };
 136
 137 MODULE_DEVICE_TABLE(usb, btusb_table);
 138
 139 static const struct usb_device_id blacklist_table[] = {
 140         /* CSR BlueCore devices */
 141         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 142
 143         /* Broadcom BCM2033 without firmware */
 144         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 145
 146         /* Atheros 3011 with sflash firmware */
 147         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 148         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 149         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 150         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 151         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 152         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 153
 154         /* Atheros AR9285 Malbec with sflash firmware */
 155         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 156
 157         /* Atheros 3012 with sflash firmware */
 158         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 159         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 160         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 161         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 162         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 163         { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
 164         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 165         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 166         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 167         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 168         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 169         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 170         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 171         { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
 172         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 173         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 174         { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
 175         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 176         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 177         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 178         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 179         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 180         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
 181         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 182         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 183         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 184         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 185         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 186         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 187         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 188         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 189         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 190         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 191         { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
 192         { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
 193         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
 194
 195         /* Atheros AR5BBU12 with sflash firmware */
 196         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 197
 198         /* Atheros AR5BBU12 with sflash firmware */
 199         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 200         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 201
 202         /* Broadcom BCM2035 */
 203         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 204         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 205         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 206
 207         /* Broadcom BCM2045 */
 208         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 209         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 210
 211         /* IBM/Lenovo ThinkPad with Broadcom chip */
 212         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 213         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 214
 215         /* HP laptop with Broadcom chip */
 216         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 217
 218         /* Dell laptop with Broadcom chip */
 219         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 220
 221         /* Dell Wireless 370 and 410 devices */
 222         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 223         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 224
 225         /* Belkin F8T012 and F8T013 devices */
 226         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 227         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 228
 229         /* Asus WL-BTD202 device */
 230         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 231
 232         /* Kensington Bluetooth USB adapter */
 233         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 234
 235         /* RTX Telecom based adapters with buggy SCO support */
 236         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 237         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 238
 239         /* CONWISE Technology based adapters with buggy SCO support */
 240         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 241
 242         /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
 243         { USB_DEVICE(0x1300, 0x0001), .driver_info = BTUSB_SWAVE },
 244
 245         /* Digianswer devices */
 246         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 247         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 248
 249         /* CSR BlueCore Bluetooth Sniffer */
 250         { USB_DEVICE(0x0a12, 0x0002),
 251           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 252
 253         /* Frontline ComProbe Bluetooth Sniffer */
 254         { USB_DEVICE(0x16d3, 0x0002),
 255           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 256
 257         /* Intel Bluetooth device */
 258         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 259         { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
 260
 261         /* Marvell device */
 262         { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
 263         { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
 264
 265         { }     /* Terminating entry */
 266 };
 267
 268 #define BTUSB_MAX_ISOC_FRAMES   10
 269
 270 #define BTUSB_INTR_RUNNING      0
 271 #define BTUSB_BULK_RUNNING      1
 272 #define BTUSB_ISOC_RUNNING      2
 273 #define BTUSB_SUSPENDING        3
 274 #define BTUSB_DID_ISO_RESUME    4
 275
 276 struct btusb_data {
 277         struct hci_dev       *hdev;
 278         struct usb_device    *udev;
 279         struct usb_interface *intf;
 280         struct usb_interface *isoc;
 281
 282         unsigned long flags;
 283
 284         struct work_struct work;
 285         struct work_struct waker;
 286
 287         struct usb_anchor deferred;
 288         struct usb_anchor tx_anchor;
 289         int tx_in_flight;
 290         spinlock_t txlock;
 291
 292         struct usb_anchor intr_anchor;
 293         struct usb_anchor bulk_anchor;
 294         struct usb_anchor isoc_anchor;
 295         spinlock_t rxlock;
 296
 297         struct sk_buff *evt_skb;
 298         struct sk_buff *acl_skb;
 299         struct sk_buff *sco_skb;
 300
 301         struct usb_endpoint_descriptor *intr_ep;
 302         struct usb_endpoint_descriptor *bulk_tx_ep;
 303         struct usb_endpoint_descriptor *bulk_rx_ep;
 304         struct usb_endpoint_descriptor *isoc_tx_ep;
 305         struct usb_endpoint_descriptor *isoc_rx_ep;
 306
 307         __u8 cmdreq_type;
 308
 309         unsigned int sco_num;
 310         int isoc_altsetting;
 311         int suspend_count;
 312
 313         int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
 314         int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
 315 };
 316
 317 static inline void btusb_free_frags(struct btusb_data *data)
 318 {
 319         unsigned long flags;
 320
 321         spin_lock_irqsave(&data->rxlock, flags);
 322
 323         kfree_skb(data->evt_skb);
 324         data->evt_skb = NULL;
 325
 326         kfree_skb(data->acl_skb);
 327         data->acl_skb = NULL;
 328
 329         kfree_skb(data->sco_skb);
 330         data->sco_skb = NULL;
 331
 332         spin_unlock_irqrestore(&data->rxlock, flags);
 333 }
 334
 335 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
 336 {
 337         struct sk_buff *skb;
 338         int err = 0;
 339
 340         spin_lock(&data->rxlock);
 341         skb = data->evt_skb;
 342
 343         while (count) {
 344                 int len;
 345
 346                 if (!skb) {
 347                         skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
 348                         if (!skb) {
 349                                 err = -ENOMEM;
 350                                 break;
 351                         }
 352
 353                         bt_cb(skb)->pkt_type = HCI_EVENT_PKT;
 354                         bt_cb(skb)->expect = HCI_EVENT_HDR_SIZE;
 355                 }
 356
 357                 len = min_t(uint, bt_cb(skb)->expect, count);
 358                 memcpy(skb_put(skb, len), buffer, len);
 359
 360                 count -= len;
 361                 buffer += len;
 362                 bt_cb(skb)->expect -= len;
 363
 364                 if (skb->len == HCI_EVENT_HDR_SIZE) {
 365                         /* Complete event header */
 366                         bt_cb(skb)->expect = hci_event_hdr(skb)->plen;
 367
 368                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 369                                 kfree_skb(skb);
 370                                 skb = NULL;
 371
 372                                 err = -EILSEQ;
 373                                 break;
 374                         }
 375                 }
 376
 377                 if (bt_cb(skb)->expect == 0) {
 378                         /* Complete frame */
 379                         data->recv_event(data->hdev, skb);
 380                         skb = NULL;
 381                 }
 382         }
 383
 384         data->evt_skb = skb;
 385         spin_unlock(&data->rxlock);
 386
 387         return err;
 388 }
 389
 390 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
 391 {
 392         struct sk_buff *skb;
 393         int err = 0;
 394
 395         spin_lock(&data->rxlock);
 396         skb = data->acl_skb;
 397
 398         while (count) {
 399                 int len;
 400
 401                 if (!skb) {
 402                         skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
 403                         if (!skb) {
 404                                 err = -ENOMEM;
 405                                 break;
 406                         }
 407
 408                         bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT;
 409                         bt_cb(skb)->expect = HCI_ACL_HDR_SIZE;
 410                 }
 411
 412                 len = min_t(uint, bt_cb(skb)->expect, count);
 413                 memcpy(skb_put(skb, len), buffer, len);
 414
 415                 count -= len;
 416                 buffer += len;
 417                 bt_cb(skb)->expect -= len;
 418
 419                 if (skb->len == HCI_ACL_HDR_SIZE) {
 420                         __le16 dlen = hci_acl_hdr(skb)->dlen;
 421
 422                         /* Complete ACL header */
 423                         bt_cb(skb)->expect = __le16_to_cpu(dlen);
 424
 425                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 426                                 kfree_skb(skb);
 427                                 skb = NULL;
 428
 429                                 err = -EILSEQ;
 430                                 break;
 431                         }
 432                 }
 433
 434                 if (bt_cb(skb)->expect == 0) {
 435                         /* Complete frame */
 436                         hci_recv_frame(data->hdev, skb);
 437                         skb = NULL;
 438                 }
 439         }
 440
 441         data->acl_skb = skb;
 442         spin_unlock(&data->rxlock);
 443
 444         return err;
 445 }
 446
 447 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
 448 {
 449         struct sk_buff *skb;
 450         int err = 0;
 451
 452         spin_lock(&data->rxlock);
 453         skb = data->sco_skb;
 454
 455         while (count) {
 456                 int len;
 457
 458                 if (!skb) {
 459                         skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
 460                         if (!skb) {
 461                                 err = -ENOMEM;
 462                                 break;
 463                         }
 464
 465                         bt_cb(skb)->pkt_type = HCI_SCODATA_PKT;
 466                         bt_cb(skb)->expect = HCI_SCO_HDR_SIZE;
 467                 }
 468
 469                 len = min_t(uint, bt_cb(skb)->expect, count);
 470                 memcpy(skb_put(skb, len), buffer, len);
 471
 472                 count -= len;
 473                 buffer += len;
 474                 bt_cb(skb)->expect -= len;
 475
 476                 if (skb->len == HCI_SCO_HDR_SIZE) {
 477                         /* Complete SCO header */
 478                         bt_cb(skb)->expect = hci_sco_hdr(skb)->dlen;
 479
 480                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 481                                 kfree_skb(skb);
 482                                 skb = NULL;
 483
 484                                 err = -EILSEQ;
 485                                 break;
 486                         }
 487                 }
 488
 489                 if (bt_cb(skb)->expect == 0) {
 490                         /* Complete frame */
 491                         hci_recv_frame(data->hdev, skb);
 492                         skb = NULL;
 493                 }
 494         }
 495
 496         data->sco_skb = skb;
 497         spin_unlock(&data->rxlock);
 498
 499         return err;
 500 }
 501
 502 static void btusb_intr_complete(struct urb *urb)
 503 {
 504         struct hci_dev *hdev = urb->context;
 505         struct btusb_data *data = hci_get_drvdata(hdev);
 506         int err;
 507
 508         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 509                urb->actual_length);
 510
 511         if (!test_bit(HCI_RUNNING, &hdev->flags))
 512                 return;
 513
 514         if (urb->status == 0) {
 515                 hdev->stat.byte_rx += urb->actual_length;
 516
 517                 if (btusb_recv_intr(data, urb->transfer_buffer,
 518                                     urb->actual_length) < 0) {
 519                         BT_ERR("%s corrupted event packet", hdev->name);
 520                         hdev->stat.err_rx++;
 521                 }
 522         } else if (urb->status == -ENOENT) {
 523                 /* Avoid suspend failed when usb_kill_urb */
 524                 return;
 525         }
 526
 527         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 528                 return;
 529
 530         usb_mark_last_busy(data->udev);
 531         usb_anchor_urb(urb, &data->intr_anchor);
 532
 533         err = usb_submit_urb(urb, GFP_ATOMIC);
 534         if (err < 0) {
 535                 /* -EPERM: urb is being killed;
 536                  * -ENODEV: device got disconnected */
 537                 if (err != -EPERM && err != -ENODEV)
 538                         BT_ERR("%s urb %p failed to resubmit (%d)",
 539                                hdev->name, urb, -err);
 540                 usb_unanchor_urb(urb);
 541         }
 542 }
 543
 544 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 545 {
 546         struct btusb_data *data = hci_get_drvdata(hdev);
 547         struct urb *urb;
 548         unsigned char *buf;
 549         unsigned int pipe;
 550         int err, size;
 551
 552         BT_DBG("%s", hdev->name);
 553
 554         if (!data->intr_ep)
 555                 return -ENODEV;
 556
 557         urb = usb_alloc_urb(0, mem_flags);
 558         if (!urb)
 559                 return -ENOMEM;
 560
 561         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 562
 563         buf = kmalloc(size, mem_flags);
 564         if (!buf) {
 565                 usb_free_urb(urb);
 566                 return -ENOMEM;
 567         }
 568
 569         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 570
 571         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 572                          btusb_intr_complete, hdev, data->intr_ep->bInterval);
 573
 574         urb->transfer_flags |= URB_FREE_BUFFER;
 575
 576         usb_anchor_urb(urb, &data->intr_anchor);
 577
 578         err = usb_submit_urb(urb, mem_flags);
 579         if (err < 0) {
 580                 if (err != -EPERM && err != -ENODEV)
 581                         BT_ERR("%s urb %p submission failed (%d)",
 582                                hdev->name, urb, -err);
 583                 usb_unanchor_urb(urb);
 584         }
 585
 586         usb_free_urb(urb);
 587
 588         return err;
 589 }
 590
 591 static void btusb_bulk_complete(struct urb *urb)
 592 {
 593         struct hci_dev *hdev = urb->context;
 594         struct btusb_data *data = hci_get_drvdata(hdev);
 595         int err;
 596
 597         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 598                urb->actual_length);
 599
 600         if (!test_bit(HCI_RUNNING, &hdev->flags))
 601                 return;
 602
 603         if (urb->status == 0) {
 604                 hdev->stat.byte_rx += urb->actual_length;
 605
 606                 if (data->recv_bulk(data, urb->transfer_buffer,
 607                                     urb->actual_length) < 0) {
 608                         BT_ERR("%s corrupted ACL packet", hdev->name);
 609                         hdev->stat.err_rx++;
 610                 }
 611         } else if (urb->status == -ENOENT) {
 612                 /* Avoid suspend failed when usb_kill_urb */
 613                 return;
 614         }
 615
 616         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 617                 return;
 618
 619         usb_anchor_urb(urb, &data->bulk_anchor);
 620         usb_mark_last_busy(data->udev);
 621
 622         err = usb_submit_urb(urb, GFP_ATOMIC);
 623         if (err < 0) {
 624                 /* -EPERM: urb is being killed;
 625                  * -ENODEV: device got disconnected */
 626                 if (err != -EPERM && err != -ENODEV)
 627                         BT_ERR("%s urb %p failed to resubmit (%d)",
 628                                hdev->name, urb, -err);
 629                 usb_unanchor_urb(urb);
 630         }
 631 }
 632
 633 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 634 {
 635         struct btusb_data *data = hci_get_drvdata(hdev);
 636         struct urb *urb;
 637         unsigned char *buf;
 638         unsigned int pipe;
 639         int err, size = HCI_MAX_FRAME_SIZE;
 640
 641         BT_DBG("%s", hdev->name);
 642
 643         if (!data->bulk_rx_ep)
 644                 return -ENODEV;
 645
 646         urb = usb_alloc_urb(0, mem_flags);
 647         if (!urb)
 648                 return -ENOMEM;
 649
 650         buf = kmalloc(size, mem_flags);
 651         if (!buf) {
 652                 usb_free_urb(urb);
 653                 return -ENOMEM;
 654         }
 655
 656         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 657
 658         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
 659                           btusb_bulk_complete, hdev);
 660
 661         urb->transfer_flags |= URB_FREE_BUFFER;
 662
 663         usb_mark_last_busy(data->udev);
 664         usb_anchor_urb(urb, &data->bulk_anchor);
 665
 666         err = usb_submit_urb(urb, mem_flags);
 667         if (err < 0) {
 668                 if (err != -EPERM && err != -ENODEV)
 669                         BT_ERR("%s urb %p submission failed (%d)",
 670                                hdev->name, urb, -err);
 671                 usb_unanchor_urb(urb);
 672         }
 673
 674         usb_free_urb(urb);
 675
 676         return err;
 677 }
 678
 679 static void btusb_isoc_complete(struct urb *urb)
 680 {
 681         struct hci_dev *hdev = urb->context;
 682         struct btusb_data *data = hci_get_drvdata(hdev);
 683         int i, err;
 684
 685         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 686                urb->actual_length);
 687
 688         if (!test_bit(HCI_RUNNING, &hdev->flags))
 689                 return;
 690
 691         if (urb->status == 0) {
 692                 for (i = 0; i < urb->number_of_packets; i++) {
 693                         unsigned int offset = urb->iso_frame_desc[i].offset;
 694                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 695
 696                         if (urb->iso_frame_desc[i].status)
 697                                 continue;
 698
 699                         hdev->stat.byte_rx += length;
 700
 701                         if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
 702                                             length) < 0) {
 703                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 704                                 hdev->stat.err_rx++;
 705                         }
 706                 }
 707         } else if (urb->status == -ENOENT) {
 708                 /* Avoid suspend failed when usb_kill_urb */
 709                 return;
 710         }
 711
 712         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 713                 return;
 714
 715         usb_anchor_urb(urb, &data->isoc_anchor);
 716
 717         err = usb_submit_urb(urb, GFP_ATOMIC);
 718         if (err < 0) {
 719                 /* -EPERM: urb is being killed;
 720                  * -ENODEV: device got disconnected */
 721                 if (err != -EPERM && err != -ENODEV)
 722                         BT_ERR("%s urb %p failed to resubmit (%d)",
 723                                hdev->name, urb, -err);
 724                 usb_unanchor_urb(urb);
 725         }
 726 }
 727
 728 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 729 {
 730         int i, offset = 0;
 731
 732         BT_DBG("len %d mtu %d", len, mtu);
 733
 734         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 735                                         i++, offset += mtu, len -= mtu) {
 736                 urb->iso_frame_desc[i].offset = offset;
 737                 urb->iso_frame_desc[i].length = mtu;
 738         }
 739
 740         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 741                 urb->iso_frame_desc[i].offset = offset;
 742                 urb->iso_frame_desc[i].length = len;
 743                 i++;
 744         }
 745
 746         urb->number_of_packets = i;
 747 }
 748
 749 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 750 {
 751         struct btusb_data *data = hci_get_drvdata(hdev);
 752         struct urb *urb;
 753         unsigned char *buf;
 754         unsigned int pipe;
 755         int err, size;
 756
 757         BT_DBG("%s", hdev->name);
 758
 759         if (!data->isoc_rx_ep)
 760                 return -ENODEV;
 761
 762         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 763         if (!urb)
 764                 return -ENOMEM;
 765
 766         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 767                                                 BTUSB_MAX_ISOC_FRAMES;
 768
 769         buf = kmalloc(size, mem_flags);
 770         if (!buf) {
 771                 usb_free_urb(urb);
 772                 return -ENOMEM;
 773         }
 774
 775         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 776
 777         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 778                          hdev, data->isoc_rx_ep->bInterval);
 779
 780         urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
 781
 782         __fill_isoc_descriptor(urb, size,
 783                                le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 784
 785         usb_anchor_urb(urb, &data->isoc_anchor);
 786
 787         err = usb_submit_urb(urb, mem_flags);
 788         if (err < 0) {
 789                 if (err != -EPERM && err != -ENODEV)
 790                         BT_ERR("%s urb %p submission failed (%d)",
 791                                hdev->name, urb, -err);
 792                 usb_unanchor_urb(urb);
 793         }
 794
 795         usb_free_urb(urb);
 796
 797         return err;
 798 }
 799
 800 static void btusb_tx_complete(struct urb *urb)
 801 {
 802         struct sk_buff *skb = urb->context;
 803         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
 804         struct btusb_data *data = hci_get_drvdata(hdev);
 805
 806         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 807                urb->actual_length);
 808
 809         if (!test_bit(HCI_RUNNING, &hdev->flags))
 810                 goto done;
 811
 812         if (!urb->status)
 813                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 814         else
 815                 hdev->stat.err_tx++;
 816
 817 done:
 818         spin_lock(&data->txlock);
 819         data->tx_in_flight--;
 820         spin_unlock(&data->txlock);
 821
 822         kfree(urb->setup_packet);
 823
 824         kfree_skb(skb);
 825 }
 826
 827 static void btusb_isoc_tx_complete(struct urb *urb)
 828 {
 829         struct sk_buff *skb = urb->context;
 830         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
 831
 832         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 833                urb->actual_length);
 834
 835         if (!test_bit(HCI_RUNNING, &hdev->flags))
 836                 goto done;
 837
 838         if (!urb->status)
 839                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 840         else
 841                 hdev->stat.err_tx++;
 842
 843 done:
 844         kfree(urb->setup_packet);
 845
 846         kfree_skb(skb);
 847 }
 848
 849 static int btusb_open(struct hci_dev *hdev)
 850 {
 851         struct btusb_data *data = hci_get_drvdata(hdev);
 852         int err;
 853
 854         BT_DBG("%s", hdev->name);
 855
 856         err = usb_autopm_get_interface(data->intf);
 857         if (err < 0)
 858                 return err;
 859
 860         data->intf->needs_remote_wakeup = 1;
 861
 862         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 863                 goto done;
 864
 865         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 866                 goto done;
 867
 868         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 869         if (err < 0)
 870                 goto failed;
 871
 872         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 873         if (err < 0) {
 874                 usb_kill_anchored_urbs(&data->intr_anchor);
 875                 goto failed;
 876         }
 877
 878         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 879         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 880
 881 done:
 882         usb_autopm_put_interface(data->intf);
 883         return 0;
 884
 885 failed:
 886         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 887         clear_bit(HCI_RUNNING, &hdev->flags);
 888         usb_autopm_put_interface(data->intf);
 889         return err;
 890 }
 891
 892 static void btusb_stop_traffic(struct btusb_data *data)
 893 {
 894         usb_kill_anchored_urbs(&data->intr_anchor);
 895         usb_kill_anchored_urbs(&data->bulk_anchor);
 896         usb_kill_anchored_urbs(&data->isoc_anchor);
 897 }
 898
 899 static int btusb_close(struct hci_dev *hdev)
 900 {
 901         struct btusb_data *data = hci_get_drvdata(hdev);
 902         int err;
 903
 904         BT_DBG("%s", hdev->name);
 905
 906         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 907                 return 0;
 908
 909         cancel_work_sync(&data->work);
 910         cancel_work_sync(&data->waker);
 911
 912         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 913         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 914         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 915
 916         btusb_stop_traffic(data);
 917         btusb_free_frags(data);
 918
 919         err = usb_autopm_get_interface(data->intf);
 920         if (err < 0)
 921                 goto failed;
 922
 923         data->intf->needs_remote_wakeup = 0;
 924         usb_autopm_put_interface(data->intf);
 925
 926 failed:
 927         usb_scuttle_anchored_urbs(&data->deferred);
 928         return 0;
 929 }
 930
 931 static int btusb_flush(struct hci_dev *hdev)
 932 {
 933         struct btusb_data *data = hci_get_drvdata(hdev);
 934
 935         BT_DBG("%s", hdev->name);
 936
 937         usb_kill_anchored_urbs(&data->tx_anchor);
 938         btusb_free_frags(data);
 939
 940         return 0;
 941 }
 942
 943 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
 944 {
 945         struct btusb_data *data = hci_get_drvdata(hdev);
 946         struct usb_ctrlrequest *dr;
 947         struct urb *urb;
 948         unsigned int pipe;
 949
 950         urb = usb_alloc_urb(0, GFP_KERNEL);
 951         if (!urb)
 952                 return ERR_PTR(-ENOMEM);
 953
 954         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
 955         if (!dr) {
 956                 usb_free_urb(urb);
 957                 return ERR_PTR(-ENOMEM);
 958         }
 959
 960         dr->bRequestType = data->cmdreq_type;
 961         dr->bRequest     = 0;
 962         dr->wIndex       = 0;
 963         dr->wValue       = 0;
 964         dr->wLength      = __cpu_to_le16(skb->len);
 965
 966         pipe = usb_sndctrlpipe(data->udev, 0x00);
 967
 968         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
 969                              skb->data, skb->len, btusb_tx_complete, skb);
 970
 971         skb->dev = (void *)hdev;
 972
 973         return urb;
 974 }
 975
 976 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
 977 {
 978         struct btusb_data *data = hci_get_drvdata(hdev);
 979         struct urb *urb;
 980         unsigned int pipe;
 981
 982         if (!data->bulk_tx_ep)
 983                 return ERR_PTR(-ENODEV);
 984
 985         urb = usb_alloc_urb(0, GFP_KERNEL);
 986         if (!urb)
 987                 return ERR_PTR(-ENOMEM);
 988
 989         pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
 990
 991         usb_fill_bulk_urb(urb, data->udev, pipe,
 992                           skb->data, skb->len, btusb_tx_complete, skb);
 993
 994         skb->dev = (void *)hdev;
 995
 996         return urb;
 997 }
 998
 999 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1000 {
1001         struct btusb_data *data = hci_get_drvdata(hdev);
1002         struct urb *urb;
1003         unsigned int pipe;
1004
1005         if (!data->isoc_tx_ep)
1006                 return ERR_PTR(-ENODEV);
1007
1008         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1009         if (!urb)
1010                 return ERR_PTR(-ENOMEM);
1011
1012         pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1013
1014         usb_fill_int_urb(urb, data->udev, pipe,
1015                          skb->data, skb->len, btusb_isoc_tx_complete,
1016                          skb, data->isoc_tx_ep->bInterval);
1017
1018         urb->transfer_flags  = URB_ISO_ASAP;
1019
1020         __fill_isoc_descriptor(urb, skb->len,
1021                                le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1022
1023         skb->dev = (void *)hdev;
1024
1025         return urb;
1026 }
1027
1028 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1029 {
1030         struct btusb_data *data = hci_get_drvdata(hdev);
1031         int err;
1032
1033         usb_anchor_urb(urb, &data->tx_anchor);
1034
1035         err = usb_submit_urb(urb, GFP_KERNEL);
1036         if (err < 0) {
1037                 if (err != -EPERM && err != -ENODEV)
1038                         BT_ERR("%s urb %p submission failed (%d)",
1039                                hdev->name, urb, -err);
1040                 kfree(urb->setup_packet);
1041                 usb_unanchor_urb(urb);
1042         } else {
1043                 usb_mark_last_busy(data->udev);
1044         }
1045
1046         usb_free_urb(urb);
1047         return err;
1048 }
1049
1050 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1051 {
1052         struct btusb_data *data = hci_get_drvdata(hdev);
1053         unsigned long flags;
1054         bool suspending;
1055
1056         spin_lock_irqsave(&data->txlock, flags);
1057         suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1058         if (!suspending)
1059                 data->tx_in_flight++;
1060         spin_unlock_irqrestore(&data->txlock, flags);
1061
1062         if (!suspending)
1063                 return submit_tx_urb(hdev, urb);
1064
1065         usb_anchor_urb(urb, &data->deferred);
1066         schedule_work(&data->waker);
1067
1068         usb_free_urb(urb);
1069         return 0;
1070 }
1071
1072 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1073 {
1074         struct urb *urb;
1075
1076         BT_DBG("%s", hdev->name);
1077
1078         if (!test_bit(HCI_RUNNING, &hdev->flags))
1079                 return -EBUSY;
1080
1081         switch (bt_cb(skb)->pkt_type) {
1082         case HCI_COMMAND_PKT:
1083                 urb = alloc_ctrl_urb(hdev, skb);
1084                 if (IS_ERR(urb))
1085                         return PTR_ERR(urb);
1086
1087                 hdev->stat.cmd_tx++;
1088                 return submit_or_queue_tx_urb(hdev, urb);
1089
1090         case HCI_ACLDATA_PKT:
1091                 urb = alloc_bulk_urb(hdev, skb);
1092                 if (IS_ERR(urb))
1093                         return PTR_ERR(urb);
1094
1095                 hdev->stat.acl_tx++;
1096                 return submit_or_queue_tx_urb(hdev, urb);
1097
1098         case HCI_SCODATA_PKT:
1099                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1100                         return -ENODEV;
1101
1102                 urb = alloc_isoc_urb(hdev, skb);
1103                 if (IS_ERR(urb))
1104                         return PTR_ERR(urb);
1105
1106                 hdev->stat.sco_tx++;
1107                 return submit_tx_urb(hdev, urb);
1108         }
1109
1110         return -EILSEQ;
1111 }
1112
1113 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1114 {
1115         struct btusb_data *data = hci_get_drvdata(hdev);
1116
1117         BT_DBG("%s evt %d", hdev->name, evt);
1118
1119         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1120                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1121                 schedule_work(&data->work);
1122         }
1123 }
1124
1125 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1126 {
1127         struct btusb_data *data = hci_get_drvdata(hdev);
1128         struct usb_interface *intf = data->isoc;
1129         struct usb_endpoint_descriptor *ep_desc;
1130         int i, err;
1131
1132         if (!data->isoc)
1133                 return -ENODEV;
1134
1135         err = usb_set_interface(data->udev, 1, altsetting);
1136         if (err < 0) {
1137                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
1138                 return err;
1139         }
1140
1141         data->isoc_altsetting = altsetting;
1142
1143         data->isoc_tx_ep = NULL;
1144         data->isoc_rx_ep = NULL;
1145
1146         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1147                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1148
1149                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1150                         data->isoc_tx_ep = ep_desc;
1151                         continue;
1152                 }
1153
1154                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1155                         data->isoc_rx_ep = ep_desc;
1156                         continue;
1157                 }
1158         }
1159
1160         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1161                 BT_ERR("%s invalid SCO descriptors", hdev->name);
1162                 return -ENODEV;
1163         }
1164
1165         return 0;
1166 }
1167
1168 static void btusb_work(struct work_struct *work)
1169 {
1170         struct btusb_data *data = container_of(work, struct btusb_data, work);
1171         struct hci_dev *hdev = data->hdev;
1172         int new_alts;
1173         int err;
1174
1175         if (data->sco_num > 0) {
1176                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1177                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1178                         if (err < 0) {
1179                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1180                                 usb_kill_anchored_urbs(&data->isoc_anchor);
1181                                 return;
1182                         }
1183
1184                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1185                 }
1186
1187                 if (hdev->voice_setting & 0x0020) {
1188                         static const int alts[3] = { 2, 4, 5 };
1189
1190                         new_alts = alts[data->sco_num - 1];
1191                 } else {
1192                         new_alts = data->sco_num;
1193                 }
1194
1195                 if (data->isoc_altsetting != new_alts) {
1196                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1197                         usb_kill_anchored_urbs(&data->isoc_anchor);
1198
1199                         if (__set_isoc_interface(hdev, new_alts) < 0)
1200                                 return;
1201                 }
1202
1203                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1204                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1205                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1206                         else
1207                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1208                 }
1209         } else {
1210                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1211                 usb_kill_anchored_urbs(&data->isoc_anchor);
1212
1213                 __set_isoc_interface(hdev, 0);
1214                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1215                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1216         }
1217 }
1218
1219 static void btusb_waker(struct work_struct *work)
1220 {
1221         struct btusb_data *data = container_of(work, struct btusb_data, waker);
1222         int err;
1223
1224         err = usb_autopm_get_interface(data->intf);
1225         if (err < 0)
1226                 return;
1227
1228         usb_autopm_put_interface(data->intf);
1229 }
1230
1231 static int btusb_setup_bcm92035(struct hci_dev *hdev)
1232 {
1233         struct sk_buff *skb;
1234         u8 val = 0x00;
1235
1236         BT_DBG("%s", hdev->name);
1237
1238         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1239         if (IS_ERR(skb))
1240                 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
1241         else
1242                 kfree_skb(skb);
1243
1244         return 0;
1245 }
1246
1247 static int btusb_setup_csr(struct hci_dev *hdev)
1248 {
1249         struct hci_rp_read_local_version *rp;
1250         struct sk_buff *skb;
1251         int ret;
1252
1253         BT_DBG("%s", hdev->name);
1254
1255         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1256                              HCI_INIT_TIMEOUT);
1257         if (IS_ERR(skb)) {
1258                 BT_ERR("Reading local version failed (%ld)", -PTR_ERR(skb));
1259                 return -PTR_ERR(skb);
1260         }
1261
1262         rp = (struct hci_rp_read_local_version *)skb->data;
1263
1264         if (!rp->status) {
1265                 if (le16_to_cpu(rp->manufacturer) != 10) {
1266                         /* Clear the reset quirk since this is not an actual
1267                          * early Bluetooth 1.1 device from CSR.
1268                          */
1269                         clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1270
1271                         /* These fake CSR controllers have all a broken
1272                          * stored link key handling and so just disable it.
1273                          */
1274                         set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY,
1275                                 &hdev->quirks);
1276                 }
1277         }
1278
1279         ret = -bt_to_errno(rp->status);
1280
1281         kfree_skb(skb);
1282
1283         return ret;
1284 }
1285
1286 struct intel_version {
1287         u8 status;
1288         u8 hw_platform;
1289         u8 hw_variant;
1290         u8 hw_revision;
1291         u8 fw_variant;
1292         u8 fw_revision;
1293         u8 fw_build_num;
1294         u8 fw_build_ww;
1295         u8 fw_build_yy;
1296         u8 fw_patch_num;
1297 } __packed;
1298
1299 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1300                                                        struct intel_version *ver)
1301 {
1302         const struct firmware *fw;
1303         char fwname[64];
1304         int ret;
1305
1306         snprintf(fwname, sizeof(fwname),
1307                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1308                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
1309                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1310                  ver->fw_build_ww, ver->fw_build_yy);
1311
1312         ret = request_firmware(&fw, fwname, &hdev->dev);
1313         if (ret < 0) {
1314                 if (ret == -EINVAL) {
1315                         BT_ERR("%s Intel firmware file request failed (%d)",
1316                                hdev->name, ret);
1317                         return NULL;
1318                 }
1319
1320                 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1321                        hdev->name, fwname, ret);
1322
1323                 /* If the correct firmware patch file is not found, use the
1324                  * default firmware patch file instead
1325                  */
1326                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1327                          ver->hw_platform, ver->hw_variant);
1328                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1329                         BT_ERR("%s failed to open default Intel fw file: %s",
1330                                hdev->name, fwname);
1331                         return NULL;
1332                 }
1333         }
1334
1335         BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1336
1337         return fw;
1338 }
1339
1340 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1341                                       const struct firmware *fw,
1342                                       const u8 **fw_ptr, int *disable_patch)
1343 {
1344         struct sk_buff *skb;
1345         struct hci_command_hdr *cmd;
1346         const u8 *cmd_param;
1347         struct hci_event_hdr *evt = NULL;
1348         const u8 *evt_param = NULL;
1349         int remain = fw->size - (*fw_ptr - fw->data);
1350
1351         /* The first byte indicates the types of the patch command or event.
1352          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1353          * in the current firmware buffer doesn't start with 0x01 or
1354          * the size of remain buffer is smaller than HCI command header,
1355          * the firmware file is corrupted and it should stop the patching
1356          * process.
1357          */
1358         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1359                 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1360                 return -EINVAL;
1361         }
1362         (*fw_ptr)++;
1363         remain--;
1364
1365         cmd = (struct hci_command_hdr *)(*fw_ptr);
1366         *fw_ptr += sizeof(*cmd);
1367         remain -= sizeof(*cmd);
1368
1369         /* Ensure that the remain firmware data is long enough than the length
1370          * of command parameter. If not, the firmware file is corrupted.
1371          */
1372         if (remain < cmd->plen) {
1373                 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1374                 return -EFAULT;
1375         }
1376
1377         /* If there is a command that loads a patch in the firmware
1378          * file, then enable the patch upon success, otherwise just
1379          * disable the manufacturer mode, for example patch activation
1380          * is not required when the default firmware patch file is used
1381          * because there are no patch data to load.
1382          */
1383         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1384                 *disable_patch = 0;
1385
1386         cmd_param = *fw_ptr;
1387         *fw_ptr += cmd->plen;
1388         remain -= cmd->plen;
1389
1390         /* This reads the expected events when the above command is sent to the
1391          * device. Some vendor commands expects more than one events, for
1392          * example command status event followed by vendor specific event.
1393          * For this case, it only keeps the last expected event. so the command
1394          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1395          * last expected event.
1396          */
1397         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1398                 (*fw_ptr)++;
1399                 remain--;
1400
1401                 evt = (struct hci_event_hdr *)(*fw_ptr);
1402                 *fw_ptr += sizeof(*evt);
1403                 remain -= sizeof(*evt);
1404
1405                 if (remain < evt->plen) {
1406                         BT_ERR("%s Intel fw corrupted: invalid evt len",
1407                                hdev->name);
1408                         return -EFAULT;
1409                 }
1410
1411                 evt_param = *fw_ptr;
1412                 *fw_ptr += evt->plen;
1413                 remain -= evt->plen;
1414         }
1415
1416         /* Every HCI commands in the firmware file has its correspond event.
1417          * If event is not found or remain is smaller than zero, the firmware
1418          * file is corrupted.
1419          */
1420         if (!evt || !evt_param || remain < 0) {
1421                 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1422                 return -EFAULT;
1423         }
1424
1425         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1426                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1427         if (IS_ERR(skb)) {
1428                 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1429                        hdev->name, cmd->opcode, PTR_ERR(skb));
1430                 return PTR_ERR(skb);
1431         }
1432
1433         /* It ensures that the returned event matches the event data read from
1434          * the firmware file. At fist, it checks the length and then
1435          * the contents of the event.
1436          */
1437         if (skb->len != evt->plen) {
1438                 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1439                        le16_to_cpu(cmd->opcode));
1440                 kfree_skb(skb);
1441                 return -EFAULT;
1442         }
1443
1444         if (memcmp(skb->data, evt_param, evt->plen)) {
1445                 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1446                        hdev->name, le16_to_cpu(cmd->opcode));
1447                 kfree_skb(skb);
1448                 return -EFAULT;
1449         }
1450         kfree_skb(skb);
1451
1452         return 0;
1453 }
1454
1455 #define BDADDR_INTEL (&(bdaddr_t) {{0x00, 0x8b, 0x9e, 0x19, 0x03, 0x00}})
1456
1457 static int btusb_check_bdaddr_intel(struct hci_dev *hdev)
1458 {
1459         struct sk_buff *skb;
1460         struct hci_rp_read_bd_addr *rp;
1461
1462         skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
1463                              HCI_INIT_TIMEOUT);
1464         if (IS_ERR(skb)) {
1465                 BT_ERR("%s reading Intel device address failed (%ld)",
1466                        hdev->name, PTR_ERR(skb));
1467                 return PTR_ERR(skb);
1468         }
1469
1470         if (skb->len != sizeof(*rp)) {
1471                 BT_ERR("%s Intel device address length mismatch", hdev->name);
1472                 kfree_skb(skb);
1473                 return -EIO;
1474         }
1475
1476         rp = (struct hci_rp_read_bd_addr *)skb->data;
1477         if (rp->status) {
1478                 BT_ERR("%s Intel device address result failed (%02x)",
1479                        hdev->name, rp->status);
1480                 kfree_skb(skb);
1481                 return -bt_to_errno(rp->status);
1482         }
1483
1484         /* For some Intel based controllers, the default Bluetooth device
1485          * address 00:03:19:9E:8B:00 can be found. These controllers are
1486          * fully operational, but have the danger of duplicate addresses
1487          * and that in turn can cause problems with Bluetooth operation.
1488          */
1489         if (!bacmp(&rp->bdaddr, BDADDR_INTEL)) {
1490                 BT_ERR("%s found Intel default device address (%pMR)",
1491                        hdev->name, &rp->bdaddr);
1492                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
1493         }
1494
1495         kfree_skb(skb);
1496
1497         return 0;
1498 }
1499
1500 static int btusb_setup_intel(struct hci_dev *hdev)
1501 {
1502         struct sk_buff *skb;
1503         const struct firmware *fw;
1504         const u8 *fw_ptr;
1505         int disable_patch;
1506         struct intel_version *ver;
1507
1508         const u8 mfg_enable[] = { 0x01, 0x00 };
1509         const u8 mfg_disable[] = { 0x00, 0x00 };
1510         const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
1511         const u8 mfg_reset_activate[] = { 0x00, 0x02 };
1512
1513         BT_DBG("%s", hdev->name);
1514
1515         /* The controller has a bug with the first HCI command sent to it
1516          * returning number of completed commands as zero. This would stall the
1517          * command processing in the Bluetooth core.
1518          *
1519          * As a workaround, send HCI Reset command first which will reset the
1520          * number of completed commands and allow normal command processing
1521          * from now on.
1522          */
1523         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1524         if (IS_ERR(skb)) {
1525                 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1526                        hdev->name, PTR_ERR(skb));
1527                 return PTR_ERR(skb);
1528         }
1529         kfree_skb(skb);
1530
1531         /* Read Intel specific controller version first to allow selection of
1532          * which firmware file to load.
1533          *
1534          * The returned information are hardware variant and revision plus
1535          * firmware variant, revision and build number.
1536          */
1537         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1538         if (IS_ERR(skb)) {
1539                 BT_ERR("%s reading Intel fw version command failed (%ld)",
1540                        hdev->name, PTR_ERR(skb));
1541                 return PTR_ERR(skb);
1542         }
1543
1544         if (skb->len != sizeof(*ver)) {
1545                 BT_ERR("%s Intel version event length mismatch", hdev->name);
1546                 kfree_skb(skb);
1547                 return -EIO;
1548         }
1549
1550         ver = (struct intel_version *)skb->data;
1551         if (ver->status) {
1552                 BT_ERR("%s Intel fw version event failed (%02x)", hdev->name,
1553                        ver->status);
1554                 kfree_skb(skb);
1555                 return -bt_to_errno(ver->status);
1556         }
1557
1558         BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1559                 hdev->name, ver->hw_platform, ver->hw_variant,
1560                 ver->hw_revision, ver->fw_variant,  ver->fw_revision,
1561                 ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
1562                 ver->fw_patch_num);
1563
1564         /* fw_patch_num indicates the version of patch the device currently
1565          * have. If there is no patch data in the device, it is always 0x00.
1566          * So, if it is other than 0x00, no need to patch the deivce again.
1567          */
1568         if (ver->fw_patch_num) {
1569                 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1570                         hdev->name, ver->fw_patch_num);
1571                 kfree_skb(skb);
1572                 btusb_check_bdaddr_intel(hdev);
1573                 return 0;
1574         }
1575
1576         /* Opens the firmware patch file based on the firmware version read
1577          * from the controller. If it fails to open the matching firmware
1578          * patch file, it tries to open the default firmware patch file.
1579          * If no patch file is found, allow the device to operate without
1580          * a patch.
1581          */
1582         fw = btusb_setup_intel_get_fw(hdev, ver);
1583         if (!fw) {
1584                 kfree_skb(skb);
1585                 btusb_check_bdaddr_intel(hdev);
1586                 return 0;
1587         }
1588         fw_ptr = fw->data;
1589
1590         /* This Intel specific command enables the manufacturer mode of the
1591          * controller.
1592          *
1593          * Only while this mode is enabled, the driver can download the
1594          * firmware patch data and configuration parameters.
1595          */
1596         skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
1597         if (IS_ERR(skb)) {
1598                 BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
1599                        hdev->name, PTR_ERR(skb));
1600                 release_firmware(fw);
1601                 return PTR_ERR(skb);
1602         }
1603
1604         if (skb->data[0]) {
1605                 u8 evt_status = skb->data[0];
1606
1607                 BT_ERR("%s enable Intel manufacturer mode event failed (%02x)",
1608                        hdev->name, evt_status);
1609                 kfree_skb(skb);
1610                 release_firmware(fw);
1611                 return -bt_to_errno(evt_status);
1612         }
1613         kfree_skb(skb);
1614
1615         disable_patch = 1;
1616
1617         /* The firmware data file consists of list of Intel specific HCI
1618          * commands and its expected events. The first byte indicates the
1619          * type of the message, either HCI command or HCI event.
1620          *
1621          * It reads the command and its expected event from the firmware file,
1622          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1623          * the returned event is compared with the event read from the firmware
1624          * file and it will continue until all the messages are downloaded to
1625          * the controller.
1626          *
1627          * Once the firmware patching is completed successfully,
1628          * the manufacturer mode is disabled with reset and activating the
1629          * downloaded patch.
1630          *
1631          * If the firmware patching fails, the manufacturer mode is
1632          * disabled with reset and deactivating the patch.
1633          *
1634          * If the default patch file is used, no reset is done when disabling
1635          * the manufacturer.
1636          */
1637         while (fw->size > fw_ptr - fw->data) {
1638                 int ret;
1639
1640                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1641                                                  &disable_patch);
1642                 if (ret < 0)
1643                         goto exit_mfg_deactivate;
1644         }
1645
1646         release_firmware(fw);
1647
1648         if (disable_patch)
1649                 goto exit_mfg_disable;
1650
1651         /* Patching completed successfully and disable the manufacturer mode
1652          * with reset and activate the downloaded firmware patches.
1653          */
1654         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
1655                              mfg_reset_activate, HCI_INIT_TIMEOUT);
1656         if (IS_ERR(skb)) {
1657                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1658                        hdev->name, PTR_ERR(skb));
1659                 return PTR_ERR(skb);
1660         }
1661         kfree_skb(skb);
1662
1663         BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1664                 hdev->name);
1665
1666         btusb_check_bdaddr_intel(hdev);
1667         return 0;
1668
1669 exit_mfg_disable:
1670         /* Disable the manufacturer mode without reset */
1671         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
1672                              HCI_INIT_TIMEOUT);
1673         if (IS_ERR(skb)) {
1674                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1675                        hdev->name, PTR_ERR(skb));
1676                 return PTR_ERR(skb);
1677         }
1678         kfree_skb(skb);
1679
1680         BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1681
1682         btusb_check_bdaddr_intel(hdev);
1683         return 0;
1684
1685 exit_mfg_deactivate:
1686         release_firmware(fw);
1687
1688         /* Patching failed. Disable the manufacturer mode with reset and
1689          * deactivate the downloaded firmware patches.
1690          */
1691         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
1692                              mfg_reset_deactivate, HCI_INIT_TIMEOUT);
1693         if (IS_ERR(skb)) {
1694                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1695                        hdev->name, PTR_ERR(skb));
1696                 return PTR_ERR(skb);
1697         }
1698         kfree_skb(skb);
1699
1700         BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1701                 hdev->name);
1702
1703         btusb_check_bdaddr_intel(hdev);
1704         return 0;
1705 }
1706
1707 static int btusb_set_bdaddr_intel(struct hci_dev *hdev, const bdaddr_t *bdaddr)
1708 {
1709         struct sk_buff *skb;
1710         long ret;
1711
1712         skb = __hci_cmd_sync(hdev, 0xfc31, 6, bdaddr, HCI_INIT_TIMEOUT);
1713         if (IS_ERR(skb)) {
1714                 ret = PTR_ERR(skb);
1715                 BT_ERR("%s: changing Intel device address failed (%ld)",
1716                        hdev->name, ret);
1717                 return ret;
1718         }
1719         kfree_skb(skb);
1720
1721         return 0;
1722 }
1723
1724 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
1725                                     const bdaddr_t *bdaddr)
1726 {
1727         struct sk_buff *skb;
1728         u8 buf[8];
1729         long ret;
1730
1731         buf[0] = 0xfe;
1732         buf[1] = sizeof(bdaddr_t);
1733         memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
1734
1735         skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
1736         if (IS_ERR(skb)) {
1737                 ret = PTR_ERR(skb);
1738                 BT_ERR("%s: changing Marvell device address failed (%ld)",
1739                        hdev->name, ret);
1740                 return ret;
1741         }
1742         kfree_skb(skb);
1743
1744         return 0;
1745 }
1746
1747 #define BDADDR_BCM20702A0 (&(bdaddr_t) {{0x00, 0xa0, 0x02, 0x70, 0x20, 0x00}})
1748
1749 static int btusb_setup_bcm_patchram(struct hci_dev *hdev)
1750 {
1751         struct btusb_data *data = hci_get_drvdata(hdev);
1752         struct usb_device *udev = data->udev;
1753         char fw_name[64];
1754         const struct firmware *fw;
1755         const u8 *fw_ptr;
1756         size_t fw_size;
1757         const struct hci_command_hdr *cmd;
1758         const u8 *cmd_param;
1759         u16 opcode;
1760         struct sk_buff *skb;
1761         struct hci_rp_read_local_version *ver;
1762         struct hci_rp_read_bd_addr *bda;
1763         long ret;
1764
1765         snprintf(fw_name, sizeof(fw_name), "brcm/%s-%04x-%04x.hcd",
1766                  udev->product ? udev->product : "BCM",
1767                  le16_to_cpu(udev->descriptor.idVendor),
1768                  le16_to_cpu(udev->descriptor.idProduct));
1769
1770         ret = request_firmware(&fw, fw_name, &hdev->dev);
1771         if (ret < 0) {
1772                 BT_INFO("%s: BCM: patch %s not found", hdev->name, fw_name);
1773                 return 0;
1774         }
1775
1776         /* Reset */
1777         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1778         if (IS_ERR(skb)) {
1779                 ret = PTR_ERR(skb);
1780                 BT_ERR("%s: HCI_OP_RESET failed (%ld)", hdev->name, ret);
1781                 goto done;
1782         }
1783         kfree_skb(skb);
1784
1785         /* Read Local Version Info */
1786         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1787                              HCI_INIT_TIMEOUT);
1788         if (IS_ERR(skb)) {
1789                 ret = PTR_ERR(skb);
1790                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION failed (%ld)",
1791                        hdev->name, ret);
1792                 goto done;
1793         }
1794
1795         if (skb->len != sizeof(*ver)) {
1796                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION event length mismatch",
1797                        hdev->name);
1798                 kfree_skb(skb);
1799                 ret = -EIO;
1800                 goto done;
1801         }
1802
1803         ver = (struct hci_rp_read_local_version *)skb->data;
1804         BT_INFO("%s: BCM: patching hci_ver=%02x hci_rev=%04x lmp_ver=%02x "
1805                 "lmp_subver=%04x", hdev->name, ver->hci_ver, ver->hci_rev,
1806                 ver->lmp_ver, ver->lmp_subver);
1807         kfree_skb(skb);
1808
1809         /* Start Download */
1810         skb = __hci_cmd_sync(hdev, 0xfc2e, 0, NULL, HCI_INIT_TIMEOUT);
1811         if (IS_ERR(skb)) {
1812                 ret = PTR_ERR(skb);
1813                 BT_ERR("%s: BCM: Download Minidrv command failed (%ld)",
1814                        hdev->name, ret);
1815                 goto reset_fw;
1816         }
1817         kfree_skb(skb);
1818
1819         /* 50 msec delay after Download Minidrv completes */
1820         msleep(50);
1821
1822         fw_ptr = fw->data;
1823         fw_size = fw->size;
1824
1825         while (fw_size >= sizeof(*cmd)) {
1826                 cmd = (struct hci_command_hdr *)fw_ptr;
1827                 fw_ptr += sizeof(*cmd);
1828                 fw_size -= sizeof(*cmd);
1829
1830                 if (fw_size < cmd->plen) {
1831                         BT_ERR("%s: BCM: patch %s is corrupted",
1832                                hdev->name, fw_name);
1833                         ret = -EINVAL;
1834                         goto reset_fw;
1835                 }
1836
1837                 cmd_param = fw_ptr;
1838                 fw_ptr += cmd->plen;
1839                 fw_size -= cmd->plen;
1840
1841                 opcode = le16_to_cpu(cmd->opcode);
1842
1843                 skb = __hci_cmd_sync(hdev, opcode, cmd->plen, cmd_param,
1844                                      HCI_INIT_TIMEOUT);
1845                 if (IS_ERR(skb)) {
1846                         ret = PTR_ERR(skb);
1847                         BT_ERR("%s: BCM: patch command %04x failed (%ld)",
1848                                hdev->name, opcode, ret);
1849                         goto reset_fw;
1850                 }
1851                 kfree_skb(skb);
1852         }
1853
1854         /* 250 msec delay after Launch Ram completes */
1855         msleep(250);
1856
1857 reset_fw:
1858         /* Reset */
1859         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1860         if (IS_ERR(skb)) {
1861                 ret = PTR_ERR(skb);
1862                 BT_ERR("%s: HCI_OP_RESET failed (%ld)", hdev->name, ret);
1863                 goto done;
1864         }
1865         kfree_skb(skb);
1866
1867         /* Read Local Version Info */
1868         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1869                              HCI_INIT_TIMEOUT);
1870         if (IS_ERR(skb)) {
1871                 ret = PTR_ERR(skb);
1872                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION failed (%ld)",
1873                        hdev->name, ret);
1874                 goto done;
1875         }
1876
1877         if (skb->len != sizeof(*ver)) {
1878                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION event length mismatch",
1879                        hdev->name);
1880                 kfree_skb(skb);
1881                 ret = -EIO;
1882                 goto done;
1883         }
1884
1885         ver = (struct hci_rp_read_local_version *)skb->data;
1886         BT_INFO("%s: BCM: firmware hci_ver=%02x hci_rev=%04x lmp_ver=%02x "
1887                 "lmp_subver=%04x", hdev->name, ver->hci_ver, ver->hci_rev,
1888                 ver->lmp_ver, ver->lmp_subver);
1889         kfree_skb(skb);
1890
1891         /* Read BD Address */
1892         skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
1893                              HCI_INIT_TIMEOUT);
1894         if (IS_ERR(skb)) {
1895                 ret = PTR_ERR(skb);
1896                 BT_ERR("%s: HCI_OP_READ_BD_ADDR failed (%ld)",
1897                        hdev->name, ret);
1898                 goto done;
1899         }
1900
1901         if (skb->len != sizeof(*bda)) {
1902                 BT_ERR("%s: HCI_OP_READ_BD_ADDR event length mismatch",
1903                        hdev->name);
1904                 kfree_skb(skb);
1905                 ret = -EIO;
1906                 goto done;
1907         }
1908
1909         bda = (struct hci_rp_read_bd_addr *)skb->data;
1910         if (bda->status) {
1911                 BT_ERR("%s: HCI_OP_READ_BD_ADDR error status (%02x)",
1912                        hdev->name, bda->status);
1913                 kfree_skb(skb);
1914                 ret = -bt_to_errno(bda->status);
1915                 goto done;
1916         }
1917
1918         /* The address 00:20:70:02:A0:00 indicates a BCM20702A0 controller
1919          * with no configured address.
1920          */
1921         if (!bacmp(&bda->bdaddr, BDADDR_BCM20702A0)) {
1922                 BT_INFO("%s: BCM: using default device address (%pMR)",
1923                         hdev->name, &bda->bdaddr);
1924                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
1925         }
1926
1927         kfree_skb(skb);
1928
1929 done:
1930         release_firmware(fw);
1931
1932         return ret;
1933 }
1934
1935 static int btusb_set_bdaddr_bcm(struct hci_dev *hdev, const bdaddr_t *bdaddr)
1936 {
1937         struct sk_buff *skb;
1938         long ret;
1939
1940         skb = __hci_cmd_sync(hdev, 0xfc01, 6, bdaddr, HCI_INIT_TIMEOUT);
1941         if (IS_ERR(skb)) {
1942                 ret = PTR_ERR(skb);
1943                 BT_ERR("%s: BCM: Change address command failed (%ld)",
1944                        hdev->name, ret);
1945                 return ret;
1946         }
1947         kfree_skb(skb);
1948
1949         return 0;
1950 }
1951
1952 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
1953                                     const bdaddr_t *bdaddr)
1954 {
1955         struct sk_buff *skb;
1956         u8 buf[10];
1957         long ret;
1958
1959         buf[0] = 0x01;
1960         buf[1] = 0x01;
1961         buf[2] = 0x00;
1962         buf[3] = sizeof(bdaddr_t);
1963         memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
1964
1965         skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
1966         if (IS_ERR(skb)) {
1967                 ret = PTR_ERR(skb);
1968                 BT_ERR("%s: Change address command failed (%ld)",
1969                        hdev->name, ret);
1970                 return ret;
1971         }
1972         kfree_skb(skb);
1973
1974         return 0;
1975 }
1976
1977 static int btusb_probe(struct usb_interface *intf,
1978                        const struct usb_device_id *id)
1979 {
1980         struct usb_endpoint_descriptor *ep_desc;
1981         struct btusb_data *data;
1982         struct hci_dev *hdev;
1983         int i, err;
1984
1985         BT_DBG("intf %p id %p", intf, id);
1986
1987         /* interface numbers are hardcoded in the spec */
1988         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
1989                 return -ENODEV;
1990
1991         if (!id->driver_info) {
1992                 const struct usb_device_id *match;
1993
1994                 match = usb_match_id(intf, blacklist_table);
1995                 if (match)
1996                         id = match;
1997         }
1998
1999         if (id->driver_info == BTUSB_IGNORE)
2000                 return -ENODEV;
2001
2002         if (id->driver_info & BTUSB_ATH3012) {
2003                 struct usb_device *udev = interface_to_usbdev(intf);
2004
2005                 /* Old firmware would otherwise let ath3k driver load
2006                  * patch and sysconfig files */
2007                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
2008                         return -ENODEV;
2009         }
2010
2011         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
2012         if (!data)
2013                 return -ENOMEM;
2014
2015         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2016                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2017
2018                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
2019                         data->intr_ep = ep_desc;
2020                         continue;
2021                 }
2022
2023                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
2024                         data->bulk_tx_ep = ep_desc;
2025                         continue;
2026                 }
2027
2028                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
2029                         data->bulk_rx_ep = ep_desc;
2030                         continue;
2031                 }
2032         }
2033
2034         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
2035                 return -ENODEV;
2036
2037         data->cmdreq_type = USB_TYPE_CLASS;
2038
2039         data->udev = interface_to_usbdev(intf);
2040         data->intf = intf;
2041
2042         INIT_WORK(&data->work, btusb_work);
2043         INIT_WORK(&data->waker, btusb_waker);
2044         init_usb_anchor(&data->deferred);
2045         init_usb_anchor(&data->tx_anchor);
2046         spin_lock_init(&data->txlock);
2047
2048         init_usb_anchor(&data->intr_anchor);
2049         init_usb_anchor(&data->bulk_anchor);
2050         init_usb_anchor(&data->isoc_anchor);
2051         spin_lock_init(&data->rxlock);
2052
2053         data->recv_event = hci_recv_frame;
2054         data->recv_bulk = btusb_recv_bulk;
2055
2056         hdev = hci_alloc_dev();
2057         if (!hdev)
2058                 return -ENOMEM;
2059
2060         hdev->bus = HCI_USB;
2061         hci_set_drvdata(hdev, data);
2062
2063         data->hdev = hdev;
2064
2065         SET_HCIDEV_DEV(hdev, &intf->dev);
2066
2067         hdev->open   = btusb_open;
2068         hdev->close  = btusb_close;
2069         hdev->flush  = btusb_flush;
2070         hdev->send   = btusb_send_frame;
2071         hdev->notify = btusb_notify;
2072
2073         if (id->driver_info & BTUSB_BCM92035)
2074                 hdev->setup = btusb_setup_bcm92035;
2075
2076         if (id->driver_info & BTUSB_BCM_PATCHRAM) {
2077                 hdev->setup = btusb_setup_bcm_patchram;
2078                 hdev->set_bdaddr = btusb_set_bdaddr_bcm;
2079                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2080         }
2081
2082         if (id->driver_info & BTUSB_INTEL) {
2083                 hdev->setup = btusb_setup_intel;
2084                 hdev->set_bdaddr = btusb_set_bdaddr_intel;
2085         }
2086
2087         if (id->driver_info & BTUSB_MARVELL)
2088                 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
2089
2090         if (id->driver_info & BTUSB_SWAVE) {
2091                 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
2092                 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
2093         }
2094
2095         if (id->driver_info & BTUSB_INTEL_BOOT)
2096                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
2097
2098         if (id->driver_info & BTUSB_ATH3012)
2099                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
2100
2101         /* Interface numbers are hardcoded in the specification */
2102         data->isoc = usb_ifnum_to_if(data->udev, 1);
2103
2104         if (!reset)
2105                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2106
2107         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
2108                 if (!disable_scofix)
2109                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
2110         }
2111
2112         if (id->driver_info & BTUSB_BROKEN_ISOC)
2113                 data->isoc = NULL;
2114
2115         if (id->driver_info & BTUSB_DIGIANSWER) {
2116                 data->cmdreq_type = USB_TYPE_VENDOR;
2117                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2118         }
2119
2120         if (id->driver_info & BTUSB_CSR) {
2121                 struct usb_device *udev = data->udev;
2122                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
2123
2124                 /* Old firmware would otherwise execute USB reset */
2125                 if (bcdDevice < 0x117)
2126                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2127
2128                 /* Fake CSR devices with broken commands */
2129                 if (bcdDevice <= 0x100)
2130                         hdev->setup = btusb_setup_csr;
2131         }
2132
2133         if (id->driver_info & BTUSB_SNIFFER) {
2134                 struct usb_device *udev = data->udev;
2135
2136                 /* New sniffer firmware has crippled HCI interface */
2137                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
2138                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
2139         }
2140
2141         if (id->driver_info & BTUSB_INTEL_BOOT) {
2142                 /* A bug in the bootloader causes that interrupt interface is
2143                  * only enabled after receiving SetInterface(0, AltSetting=0).
2144                  */
2145                 err = usb_set_interface(data->udev, 0, 0);
2146                 if (err < 0) {
2147                         BT_ERR("failed to set interface 0, alt 0 %d", err);
2148                         hci_free_dev(hdev);
2149                         return err;
2150                 }
2151         }
2152
2153         if (data->isoc) {
2154                 err = usb_driver_claim_interface(&btusb_driver,
2155                                                  data->isoc, data);
2156                 if (err < 0) {
2157                         hci_free_dev(hdev);
2158                         return err;
2159                 }
2160         }
2161
2162         err = hci_register_dev(hdev);
2163         if (err < 0) {
2164                 hci_free_dev(hdev);
2165                 return err;
2166         }
2167
2168         usb_set_intfdata(intf, data);
2169
2170         return 0;
2171 }
2172
2173 static void btusb_disconnect(struct usb_interface *intf)
2174 {
2175         struct btusb_data *data = usb_get_intfdata(intf);
2176         struct hci_dev *hdev;
2177
2178         BT_DBG("intf %p", intf);
2179
2180         if (!data)
2181                 return;
2182
2183         hdev = data->hdev;
2184         usb_set_intfdata(data->intf, NULL);
2185
2186         if (data->isoc)
2187                 usb_set_intfdata(data->isoc, NULL);
2188
2189         hci_unregister_dev(hdev);
2190
2191         if (intf == data->isoc)
2192                 usb_driver_release_interface(&btusb_driver, data->intf);
2193         else if (data->isoc)
2194                 usb_driver_release_interface(&btusb_driver, data->isoc);
2195
2196         btusb_free_frags(data);
2197         hci_free_dev(hdev);
2198 }
2199
2200 #ifdef CONFIG_PM
2201 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
2202 {
2203         struct btusb_data *data = usb_get_intfdata(intf);
2204
2205         BT_DBG("intf %p", intf);
2206
2207         if (data->suspend_count++)
2208                 return 0;
2209
2210         spin_lock_irq(&data->txlock);
2211         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
2212                 set_bit(BTUSB_SUSPENDING, &data->flags);
2213                 spin_unlock_irq(&data->txlock);
2214         } else {
2215                 spin_unlock_irq(&data->txlock);
2216                 data->suspend_count--;
2217                 return -EBUSY;
2218         }
2219
2220         cancel_work_sync(&data->work);
2221
2222         btusb_stop_traffic(data);
2223         usb_kill_anchored_urbs(&data->tx_anchor);
2224
2225         return 0;
2226 }
2227
2228 static void play_deferred(struct btusb_data *data)
2229 {
2230         struct urb *urb;
2231         int err;
2232
2233         while ((urb = usb_get_from_anchor(&data->deferred))) {
2234                 err = usb_submit_urb(urb, GFP_ATOMIC);
2235                 if (err < 0)
2236                         break;
2237
2238                 data->tx_in_flight++;
2239         }
2240         usb_scuttle_anchored_urbs(&data->deferred);
2241 }
2242
2243 static int btusb_resume(struct usb_interface *intf)
2244 {
2245         struct btusb_data *data = usb_get_intfdata(intf);
2246         struct hci_dev *hdev = data->hdev;
2247         int err = 0;
2248
2249         BT_DBG("intf %p", intf);
2250
2251         if (--data->suspend_count)
2252                 return 0;
2253
2254         if (!test_bit(HCI_RUNNING, &hdev->flags))
2255                 goto done;
2256
2257         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
2258                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
2259                 if (err < 0) {
2260                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
2261                         goto failed;
2262                 }
2263         }
2264
2265         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
2266                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
2267                 if (err < 0) {
2268                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
2269                         goto failed;
2270                 }
2271
2272                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
2273         }
2274
2275         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
2276                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
2277                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
2278                 else
2279                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
2280         }
2281
2282         spin_lock_irq(&data->txlock);
2283         play_deferred(data);
2284         clear_bit(BTUSB_SUSPENDING, &data->flags);
2285         spin_unlock_irq(&data->txlock);
2286         schedule_work(&data->work);
2287
2288         return 0;
2289
2290 failed:
2291         usb_scuttle_anchored_urbs(&data->deferred);
2292 done:
2293         spin_lock_irq(&data->txlock);
2294         clear_bit(BTUSB_SUSPENDING, &data->flags);
2295         spin_unlock_irq(&data->txlock);
2296
2297         return err;
2298 }
2299 #endif
2300
2301 static struct usb_driver btusb_driver = {
2302         .name           = "btusb",
2303         .probe          = btusb_probe,
2304         .disconnect     = btusb_disconnect,
2305 #ifdef CONFIG_PM
2306         .suspend        = btusb_suspend,
2307         .resume         = btusb_resume,
2308 #endif
2309         .id_table       = btusb_table,
2310         .supports_autosuspend = 1,
2311         .disable_hub_initiated_lpm = 1,
2312 };
2313
2314 module_usb_driver(btusb_driver);
2315
2316 module_param(disable_scofix, bool, 0644);
2317 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
2318
2319 module_param(force_scofix, bool, 0644);
2320 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
2321
2322 module_param(reset, bool, 0644);
2323 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
2324
2325 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
2326 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
2327 MODULE_VERSION(VERSION);
2328 MODULE_LICENSE("GPL");