drivers/bluetooth/btusb.c

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