drivers/bluetooth/btusb.c

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