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 ignore_dga;
  34 static bool ignore_csr;
  35 static bool ignore_sniffer;
  36 static bool disable_scofix;
  37 static bool force_scofix;
  38
  39 static bool reset = 1;
  40
  41 static struct usb_driver btusb_driver;
  42
  43 #define BTUSB_IGNORE            0x01
  44 #define BTUSB_DIGIANSWER        0x02
  45 #define BTUSB_CSR               0x04
  46 #define BTUSB_SNIFFER           0x08
  47 #define BTUSB_BCM92035          0x10
  48 #define BTUSB_BROKEN_ISOC       0x20
  49 #define BTUSB_WRONG_SCO_MTU     0x40
  50 #define BTUSB_ATH3012           0x80
  51 #define BTUSB_INTEL             0x100
  52
  53 static 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(0x0b05, 0x17b5) },
 105         { USB_DEVICE(0x0b05, 0x17cb) },
 106         { USB_DEVICE(0x04ca, 0x2003) },
 107         { USB_DEVICE(0x0489, 0xe042) },
 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
 116         /* Belkin F8065bf - Broadcom based */
 117         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01) },
 118
 119         { }     /* Terminating entry */
 120 };
 121
 122 MODULE_DEVICE_TABLE(usb, btusb_table);
 123
 124 static struct usb_device_id blacklist_table[] = {
 125         /* CSR BlueCore devices */
 126         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 127
 128         /* Broadcom BCM2033 without firmware */
 129         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 130
 131         /* Atheros 3011 with sflash firmware */
 132         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 133         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 134         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 135         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 136         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 137         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 138
 139         /* Atheros AR9285 Malbec with sflash firmware */
 140         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 141
 142         /* Atheros 3012 with sflash firmware */
 143         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 144         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 145         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 146         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 147         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 148         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 149         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 150         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 151         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 152         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 153         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 154         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 155         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 156         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 157         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 158         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 159         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 160         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 161         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 162         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 163         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 164         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 165         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 166
 167         /* Atheros AR5BBU12 with sflash firmware */
 168         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 169
 170         /* Atheros AR5BBU12 with sflash firmware */
 171         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 172         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 173
 174         /* Broadcom BCM2035 */
 175         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 176         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 177         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 178
 179         /* Broadcom BCM2045 */
 180         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 181         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 182
 183         /* IBM/Lenovo ThinkPad with Broadcom chip */
 184         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 185         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 186
 187         /* HP laptop with Broadcom chip */
 188         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 189
 190         /* Dell laptop with Broadcom chip */
 191         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 192
 193         /* Dell Wireless 370 and 410 devices */
 194         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 195         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 196
 197         /* Belkin F8T012 and F8T013 devices */
 198         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 199         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 200
 201         /* Asus WL-BTD202 device */
 202         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 203
 204         /* Kensington Bluetooth USB adapter */
 205         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 206
 207         /* RTX Telecom based adapters with buggy SCO support */
 208         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 209         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 210
 211         /* CONWISE Technology based adapters with buggy SCO support */
 212         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 213
 214         /* Digianswer devices */
 215         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 216         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 217
 218         /* CSR BlueCore Bluetooth Sniffer */
 219         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
 220
 221         /* Frontline ComProbe Bluetooth Sniffer */
 222         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
 223
 224         /* Intel Bluetooth device */
 225         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 226
 227         { }     /* Terminating entry */
 228 };
 229
 230 #define BTUSB_MAX_ISOC_FRAMES   10
 231
 232 #define BTUSB_INTR_RUNNING      0
 233 #define BTUSB_BULK_RUNNING      1
 234 #define BTUSB_ISOC_RUNNING      2
 235 #define BTUSB_SUSPENDING        3
 236 #define BTUSB_DID_ISO_RESUME    4
 237
 238 struct btusb_data {
 239         struct hci_dev       *hdev;
 240         struct usb_device    *udev;
 241         struct usb_interface *intf;
 242         struct usb_interface *isoc;
 243
 244         spinlock_t lock;
 245
 246         unsigned long flags;
 247
 248         struct work_struct work;
 249         struct work_struct waker;
 250
 251         struct usb_anchor tx_anchor;
 252         struct usb_anchor intr_anchor;
 253         struct usb_anchor bulk_anchor;
 254         struct usb_anchor isoc_anchor;
 255         struct usb_anchor deferred;
 256         int tx_in_flight;
 257         spinlock_t txlock;
 258
 259         struct usb_endpoint_descriptor *intr_ep;
 260         struct usb_endpoint_descriptor *bulk_tx_ep;
 261         struct usb_endpoint_descriptor *bulk_rx_ep;
 262         struct usb_endpoint_descriptor *isoc_tx_ep;
 263         struct usb_endpoint_descriptor *isoc_rx_ep;
 264
 265         __u8 cmdreq_type;
 266
 267         unsigned int sco_num;
 268         int isoc_altsetting;
 269         int suspend_count;
 270 };
 271
 272 static int inc_tx(struct btusb_data *data)
 273 {
 274         unsigned long flags;
 275         int rv;
 276
 277         spin_lock_irqsave(&data->txlock, flags);
 278         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
 279         if (!rv)
 280                 data->tx_in_flight++;
 281         spin_unlock_irqrestore(&data->txlock, flags);
 282
 283         return rv;
 284 }
 285
 286 static void btusb_intr_complete(struct urb *urb)
 287 {
 288         struct hci_dev *hdev = urb->context;
 289         struct btusb_data *data = hci_get_drvdata(hdev);
 290         int err;
 291
 292         BT_DBG("%s urb %p status %d count %d", hdev->name,
 293                                         urb, urb->status, urb->actual_length);
 294
 295         if (!test_bit(HCI_RUNNING, &hdev->flags))
 296                 return;
 297
 298         if (urb->status == 0) {
 299                 hdev->stat.byte_rx += urb->actual_length;
 300
 301                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
 302                                                 urb->transfer_buffer,
 303                                                 urb->actual_length) < 0) {
 304                         BT_ERR("%s corrupted event packet", hdev->name);
 305                         hdev->stat.err_rx++;
 306                 }
 307         }
 308
 309         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 310                 return;
 311
 312         usb_mark_last_busy(data->udev);
 313         usb_anchor_urb(urb, &data->intr_anchor);
 314
 315         err = usb_submit_urb(urb, GFP_ATOMIC);
 316         if (err < 0) {
 317                 /* -EPERM: urb is being killed;
 318                  * -ENODEV: device got disconnected */
 319                 if (err != -EPERM && err != -ENODEV)
 320                         BT_ERR("%s urb %p failed to resubmit (%d)",
 321                                                 hdev->name, urb, -err);
 322                 usb_unanchor_urb(urb);
 323         }
 324 }
 325
 326 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 327 {
 328         struct btusb_data *data = hci_get_drvdata(hdev);
 329         struct urb *urb;
 330         unsigned char *buf;
 331         unsigned int pipe;
 332         int err, size;
 333
 334         BT_DBG("%s", hdev->name);
 335
 336         if (!data->intr_ep)
 337                 return -ENODEV;
 338
 339         urb = usb_alloc_urb(0, mem_flags);
 340         if (!urb)
 341                 return -ENOMEM;
 342
 343         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 344
 345         buf = kmalloc(size, mem_flags);
 346         if (!buf) {
 347                 usb_free_urb(urb);
 348                 return -ENOMEM;
 349         }
 350
 351         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 352
 353         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 354                                                 btusb_intr_complete, hdev,
 355                                                 data->intr_ep->bInterval);
 356
 357         urb->transfer_flags |= URB_FREE_BUFFER;
 358
 359         usb_anchor_urb(urb, &data->intr_anchor);
 360
 361         err = usb_submit_urb(urb, mem_flags);
 362         if (err < 0) {
 363                 if (err != -EPERM && err != -ENODEV)
 364                         BT_ERR("%s urb %p submission failed (%d)",
 365                                                 hdev->name, urb, -err);
 366                 usb_unanchor_urb(urb);
 367         }
 368
 369         usb_free_urb(urb);
 370
 371         return err;
 372 }
 373
 374 static void btusb_bulk_complete(struct urb *urb)
 375 {
 376         struct hci_dev *hdev = urb->context;
 377         struct btusb_data *data = hci_get_drvdata(hdev);
 378         int err;
 379
 380         BT_DBG("%s urb %p status %d count %d", hdev->name,
 381                                         urb, urb->status, urb->actual_length);
 382
 383         if (!test_bit(HCI_RUNNING, &hdev->flags))
 384                 return;
 385
 386         if (urb->status == 0) {
 387                 hdev->stat.byte_rx += urb->actual_length;
 388
 389                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
 390                                                 urb->transfer_buffer,
 391                                                 urb->actual_length) < 0) {
 392                         BT_ERR("%s corrupted ACL packet", hdev->name);
 393                         hdev->stat.err_rx++;
 394                 }
 395         }
 396
 397         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 398                 return;
 399
 400         usb_anchor_urb(urb, &data->bulk_anchor);
 401         usb_mark_last_busy(data->udev);
 402
 403         err = usb_submit_urb(urb, GFP_ATOMIC);
 404         if (err < 0) {
 405                 /* -EPERM: urb is being killed;
 406                  * -ENODEV: device got disconnected */
 407                 if (err != -EPERM && err != -ENODEV)
 408                         BT_ERR("%s urb %p failed to resubmit (%d)",
 409                                                 hdev->name, urb, -err);
 410                 usb_unanchor_urb(urb);
 411         }
 412 }
 413
 414 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 415 {
 416         struct btusb_data *data = hci_get_drvdata(hdev);
 417         struct urb *urb;
 418         unsigned char *buf;
 419         unsigned int pipe;
 420         int err, size = HCI_MAX_FRAME_SIZE;
 421
 422         BT_DBG("%s", hdev->name);
 423
 424         if (!data->bulk_rx_ep)
 425                 return -ENODEV;
 426
 427         urb = usb_alloc_urb(0, mem_flags);
 428         if (!urb)
 429                 return -ENOMEM;
 430
 431         buf = kmalloc(size, mem_flags);
 432         if (!buf) {
 433                 usb_free_urb(urb);
 434                 return -ENOMEM;
 435         }
 436
 437         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 438
 439         usb_fill_bulk_urb(urb, data->udev, pipe,
 440                                         buf, size, btusb_bulk_complete, hdev);
 441
 442         urb->transfer_flags |= URB_FREE_BUFFER;
 443
 444         usb_mark_last_busy(data->udev);
 445         usb_anchor_urb(urb, &data->bulk_anchor);
 446
 447         err = usb_submit_urb(urb, mem_flags);
 448         if (err < 0) {
 449                 if (err != -EPERM && err != -ENODEV)
 450                         BT_ERR("%s urb %p submission failed (%d)",
 451                                                 hdev->name, urb, -err);
 452                 usb_unanchor_urb(urb);
 453         }
 454
 455         usb_free_urb(urb);
 456
 457         return err;
 458 }
 459
 460 static void btusb_isoc_complete(struct urb *urb)
 461 {
 462         struct hci_dev *hdev = urb->context;
 463         struct btusb_data *data = hci_get_drvdata(hdev);
 464         int i, err;
 465
 466         BT_DBG("%s urb %p status %d count %d", hdev->name,
 467                                         urb, urb->status, urb->actual_length);
 468
 469         if (!test_bit(HCI_RUNNING, &hdev->flags))
 470                 return;
 471
 472         if (urb->status == 0) {
 473                 for (i = 0; i < urb->number_of_packets; i++) {
 474                         unsigned int offset = urb->iso_frame_desc[i].offset;
 475                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 476
 477                         if (urb->iso_frame_desc[i].status)
 478                                 continue;
 479
 480                         hdev->stat.byte_rx += length;
 481
 482                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
 483                                                 urb->transfer_buffer + offset,
 484                                                                 length) < 0) {
 485                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 486                                 hdev->stat.err_rx++;
 487                         }
 488                 }
 489         }
 490
 491         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 492                 return;
 493
 494         usb_anchor_urb(urb, &data->isoc_anchor);
 495
 496         err = usb_submit_urb(urb, GFP_ATOMIC);
 497         if (err < 0) {
 498                 /* -EPERM: urb is being killed;
 499                  * -ENODEV: device got disconnected */
 500                 if (err != -EPERM && err != -ENODEV)
 501                         BT_ERR("%s urb %p failed to resubmit (%d)",
 502                                                 hdev->name, urb, -err);
 503                 usb_unanchor_urb(urb);
 504         }
 505 }
 506
 507 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 508 {
 509         int i, offset = 0;
 510
 511         BT_DBG("len %d mtu %d", len, mtu);
 512
 513         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 514                                         i++, offset += mtu, len -= mtu) {
 515                 urb->iso_frame_desc[i].offset = offset;
 516                 urb->iso_frame_desc[i].length = mtu;
 517         }
 518
 519         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 520                 urb->iso_frame_desc[i].offset = offset;
 521                 urb->iso_frame_desc[i].length = len;
 522                 i++;
 523         }
 524
 525         urb->number_of_packets = i;
 526 }
 527
 528 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 529 {
 530         struct btusb_data *data = hci_get_drvdata(hdev);
 531         struct urb *urb;
 532         unsigned char *buf;
 533         unsigned int pipe;
 534         int err, size;
 535
 536         BT_DBG("%s", hdev->name);
 537
 538         if (!data->isoc_rx_ep)
 539                 return -ENODEV;
 540
 541         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 542         if (!urb)
 543                 return -ENOMEM;
 544
 545         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 546                                                 BTUSB_MAX_ISOC_FRAMES;
 547
 548         buf = kmalloc(size, mem_flags);
 549         if (!buf) {
 550                 usb_free_urb(urb);
 551                 return -ENOMEM;
 552         }
 553
 554         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 555
 556         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 557                                 hdev, data->isoc_rx_ep->bInterval);
 558
 559         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
 560
 561         __fill_isoc_descriptor(urb, size,
 562                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 563
 564         usb_anchor_urb(urb, &data->isoc_anchor);
 565
 566         err = usb_submit_urb(urb, mem_flags);
 567         if (err < 0) {
 568                 if (err != -EPERM && err != -ENODEV)
 569                         BT_ERR("%s urb %p submission failed (%d)",
 570                                                 hdev->name, urb, -err);
 571                 usb_unanchor_urb(urb);
 572         }
 573
 574         usb_free_urb(urb);
 575
 576         return err;
 577 }
 578
 579 static void btusb_tx_complete(struct urb *urb)
 580 {
 581         struct sk_buff *skb = urb->context;
 582         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 583         struct btusb_data *data = hci_get_drvdata(hdev);
 584
 585         BT_DBG("%s urb %p status %d count %d", hdev->name,
 586                                         urb, urb->status, urb->actual_length);
 587
 588         if (!test_bit(HCI_RUNNING, &hdev->flags))
 589                 goto done;
 590
 591         if (!urb->status)
 592                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 593         else
 594                 hdev->stat.err_tx++;
 595
 596 done:
 597         spin_lock(&data->txlock);
 598         data->tx_in_flight--;
 599         spin_unlock(&data->txlock);
 600
 601         kfree(urb->setup_packet);
 602
 603         kfree_skb(skb);
 604 }
 605
 606 static void btusb_isoc_tx_complete(struct urb *urb)
 607 {
 608         struct sk_buff *skb = urb->context;
 609         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 610
 611         BT_DBG("%s urb %p status %d count %d", hdev->name,
 612                                         urb, urb->status, urb->actual_length);
 613
 614         if (!test_bit(HCI_RUNNING, &hdev->flags))
 615                 goto done;
 616
 617         if (!urb->status)
 618                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 619         else
 620                 hdev->stat.err_tx++;
 621
 622 done:
 623         kfree(urb->setup_packet);
 624
 625         kfree_skb(skb);
 626 }
 627
 628 static int btusb_open(struct hci_dev *hdev)
 629 {
 630         struct btusb_data *data = hci_get_drvdata(hdev);
 631         int err;
 632
 633         BT_DBG("%s", hdev->name);
 634
 635         err = usb_autopm_get_interface(data->intf);
 636         if (err < 0)
 637                 return err;
 638
 639         data->intf->needs_remote_wakeup = 1;
 640
 641         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 642                 goto done;
 643
 644         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 645                 goto done;
 646
 647         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 648         if (err < 0)
 649                 goto failed;
 650
 651         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 652         if (err < 0) {
 653                 usb_kill_anchored_urbs(&data->intr_anchor);
 654                 goto failed;
 655         }
 656
 657         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 658         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 659
 660 done:
 661         usb_autopm_put_interface(data->intf);
 662         return 0;
 663
 664 failed:
 665         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 666         clear_bit(HCI_RUNNING, &hdev->flags);
 667         usb_autopm_put_interface(data->intf);
 668         return err;
 669 }
 670
 671 static void btusb_stop_traffic(struct btusb_data *data)
 672 {
 673         usb_kill_anchored_urbs(&data->intr_anchor);
 674         usb_kill_anchored_urbs(&data->bulk_anchor);
 675         usb_kill_anchored_urbs(&data->isoc_anchor);
 676 }
 677
 678 static int btusb_close(struct hci_dev *hdev)
 679 {
 680         struct btusb_data *data = hci_get_drvdata(hdev);
 681         int err;
 682
 683         BT_DBG("%s", hdev->name);
 684
 685         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 686                 return 0;
 687
 688         cancel_work_sync(&data->work);
 689         cancel_work_sync(&data->waker);
 690
 691         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 692         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 693         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 694
 695         btusb_stop_traffic(data);
 696         err = usb_autopm_get_interface(data->intf);
 697         if (err < 0)
 698                 goto failed;
 699
 700         data->intf->needs_remote_wakeup = 0;
 701         usb_autopm_put_interface(data->intf);
 702
 703 failed:
 704         usb_scuttle_anchored_urbs(&data->deferred);
 705         return 0;
 706 }
 707
 708 static int btusb_flush(struct hci_dev *hdev)
 709 {
 710         struct btusb_data *data = hci_get_drvdata(hdev);
 711
 712         BT_DBG("%s", hdev->name);
 713
 714         usb_kill_anchored_urbs(&data->tx_anchor);
 715
 716         return 0;
 717 }
 718
 719 static int btusb_send_frame(struct sk_buff *skb)
 720 {
 721         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 722         struct btusb_data *data = hci_get_drvdata(hdev);
 723         struct usb_ctrlrequest *dr;
 724         struct urb *urb;
 725         unsigned int pipe;
 726         int err;
 727
 728         BT_DBG("%s", hdev->name);
 729
 730         if (!test_bit(HCI_RUNNING, &hdev->flags))
 731                 return -EBUSY;
 732
 733         switch (bt_cb(skb)->pkt_type) {
 734         case HCI_COMMAND_PKT:
 735                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 736                 if (!urb)
 737                         return -ENOMEM;
 738
 739                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
 740                 if (!dr) {
 741                         usb_free_urb(urb);
 742                         return -ENOMEM;
 743                 }
 744
 745                 dr->bRequestType = data->cmdreq_type;
 746                 dr->bRequest     = 0;
 747                 dr->wIndex       = 0;
 748                 dr->wValue       = 0;
 749                 dr->wLength      = __cpu_to_le16(skb->len);
 750
 751                 pipe = usb_sndctrlpipe(data->udev, 0x00);
 752
 753                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
 754                                 skb->data, skb->len, btusb_tx_complete, skb);
 755
 756                 hdev->stat.cmd_tx++;
 757                 break;
 758
 759         case HCI_ACLDATA_PKT:
 760                 if (!data->bulk_tx_ep)
 761                         return -ENODEV;
 762
 763                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 764                 if (!urb)
 765                         return -ENOMEM;
 766
 767                 pipe = usb_sndbulkpipe(data->udev,
 768                                         data->bulk_tx_ep->bEndpointAddress);
 769
 770                 usb_fill_bulk_urb(urb, data->udev, pipe,
 771                                 skb->data, skb->len, btusb_tx_complete, skb);
 772
 773                 hdev->stat.acl_tx++;
 774                 break;
 775
 776         case HCI_SCODATA_PKT:
 777                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
 778                         return -ENODEV;
 779
 780                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
 781                 if (!urb)
 782                         return -ENOMEM;
 783
 784                 pipe = usb_sndisocpipe(data->udev,
 785                                         data->isoc_tx_ep->bEndpointAddress);
 786
 787                 usb_fill_int_urb(urb, data->udev, pipe,
 788                                 skb->data, skb->len, btusb_isoc_tx_complete,
 789                                 skb, data->isoc_tx_ep->bInterval);
 790
 791                 urb->transfer_flags  = URB_ISO_ASAP;
 792
 793                 __fill_isoc_descriptor(urb, skb->len,
 794                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 795
 796                 hdev->stat.sco_tx++;
 797                 goto skip_waking;
 798
 799         default:
 800                 return -EILSEQ;
 801         }
 802
 803         err = inc_tx(data);
 804         if (err) {
 805                 usb_anchor_urb(urb, &data->deferred);
 806                 schedule_work(&data->waker);
 807                 err = 0;
 808                 goto done;
 809         }
 810
 811 skip_waking:
 812         usb_anchor_urb(urb, &data->tx_anchor);
 813
 814         err = usb_submit_urb(urb, GFP_ATOMIC);
 815         if (err < 0) {
 816                 if (err != -EPERM && err != -ENODEV)
 817                         BT_ERR("%s urb %p submission failed (%d)",
 818                                                 hdev->name, urb, -err);
 819                 kfree(urb->setup_packet);
 820                 usb_unanchor_urb(urb);
 821         } else {
 822                 usb_mark_last_busy(data->udev);
 823         }
 824
 825 done:
 826         usb_free_urb(urb);
 827         return err;
 828 }
 829
 830 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 831 {
 832         struct btusb_data *data = hci_get_drvdata(hdev);
 833
 834         BT_DBG("%s evt %d", hdev->name, evt);
 835
 836         if (hdev->conn_hash.sco_num != data->sco_num) {
 837                 data->sco_num = hdev->conn_hash.sco_num;
 838                 schedule_work(&data->work);
 839         }
 840 }
 841
 842 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
 843 {
 844         struct btusb_data *data = hci_get_drvdata(hdev);
 845         struct usb_interface *intf = data->isoc;
 846         struct usb_endpoint_descriptor *ep_desc;
 847         int i, err;
 848
 849         if (!data->isoc)
 850                 return -ENODEV;
 851
 852         err = usb_set_interface(data->udev, 1, altsetting);
 853         if (err < 0) {
 854                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
 855                 return err;
 856         }
 857
 858         data->isoc_altsetting = altsetting;
 859
 860         data->isoc_tx_ep = NULL;
 861         data->isoc_rx_ep = NULL;
 862
 863         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 864                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 865
 866                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
 867                         data->isoc_tx_ep = ep_desc;
 868                         continue;
 869                 }
 870
 871                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
 872                         data->isoc_rx_ep = ep_desc;
 873                         continue;
 874                 }
 875         }
 876
 877         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
 878                 BT_ERR("%s invalid SCO descriptors", hdev->name);
 879                 return -ENODEV;
 880         }
 881
 882         return 0;
 883 }
 884
 885 static void btusb_work(struct work_struct *work)
 886 {
 887         struct btusb_data *data = container_of(work, struct btusb_data, work);
 888         struct hci_dev *hdev = data->hdev;
 889         int new_alts;
 890         int err;
 891
 892         if (hdev->conn_hash.sco_num > 0) {
 893                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
 894                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
 895                         if (err < 0) {
 896                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 897                                 usb_kill_anchored_urbs(&data->isoc_anchor);
 898                                 return;
 899                         }
 900
 901                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
 902                 }
 903
 904                 if (hdev->voice_setting & 0x0020) {
 905                         static const int alts[3] = { 2, 4, 5 };
 906                         new_alts = alts[hdev->conn_hash.sco_num - 1];
 907                 } else {
 908                         new_alts = hdev->conn_hash.sco_num;
 909                 }
 910
 911                 if (data->isoc_altsetting != new_alts) {
 912                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 913                         usb_kill_anchored_urbs(&data->isoc_anchor);
 914
 915                         if (__set_isoc_interface(hdev, new_alts) < 0)
 916                                 return;
 917                 }
 918
 919                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
 920                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
 921                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 922                         else
 923                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
 924                 }
 925         } else {
 926                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 927                 usb_kill_anchored_urbs(&data->isoc_anchor);
 928
 929                 __set_isoc_interface(hdev, 0);
 930                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
 931                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
 932         }
 933 }
 934
 935 static void btusb_waker(struct work_struct *work)
 936 {
 937         struct btusb_data *data = container_of(work, struct btusb_data, waker);
 938         int err;
 939
 940         err = usb_autopm_get_interface(data->intf);
 941         if (err < 0)
 942                 return;
 943
 944         usb_autopm_put_interface(data->intf);
 945 }
 946
 947 static int btusb_setup_bcm92035(struct hci_dev *hdev)
 948 {
 949         struct sk_buff *skb;
 950         u8 val = 0x00;
 951
 952         BT_DBG("%s", hdev->name);
 953
 954         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
 955         if (IS_ERR(skb))
 956                 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
 957         else
 958                 kfree_skb(skb);
 959
 960         return 0;
 961 }
 962
 963 struct intel_version {
 964         u8 status;
 965         u8 hw_platform;
 966         u8 hw_variant;
 967         u8 hw_revision;
 968         u8 fw_variant;
 969         u8 fw_revision;
 970         u8 fw_build_num;
 971         u8 fw_build_ww;
 972         u8 fw_build_yy;
 973         u8 fw_patch_num;
 974 } __packed;
 975
 976 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
 977                                                 struct intel_version *ver)
 978 {
 979         const struct firmware *fw;
 980         char fwname[64];
 981         int ret;
 982
 983         snprintf(fwname, sizeof(fwname),
 984                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
 985                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
 986                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
 987                  ver->fw_build_ww, ver->fw_build_yy);
 988
 989         ret = request_firmware(&fw, fwname, &hdev->dev);
 990         if (ret < 0) {
 991                 if (ret == -EINVAL) {
 992                         BT_ERR("%s Intel firmware file request failed (%d)",
 993                                hdev->name, ret);
 994                         return NULL;
 995                 }
 996
 997                 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
 998                        hdev->name, fwname, ret);
 999
1000                 /* If the correct firmware patch file is not found, use the
1001                  * default firmware patch file instead
1002                  */
1003                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1004                          ver->hw_platform, ver->hw_variant);
1005                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1006                         BT_ERR("%s failed to open default Intel fw file: %s",
1007                                hdev->name, fwname);
1008                         return NULL;
1009                 }
1010         }
1011
1012         BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1013
1014         return fw;
1015 }
1016
1017 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1018                                       const struct firmware *fw,
1019                                       const u8 **fw_ptr, int *disable_patch)
1020 {
1021         struct sk_buff *skb;
1022         struct hci_command_hdr *cmd;
1023         const u8 *cmd_param;
1024         struct hci_event_hdr *evt = NULL;
1025         const u8 *evt_param = NULL;
1026         int remain = fw->size - (*fw_ptr - fw->data);
1027
1028         /* The first byte indicates the types of the patch command or event.
1029          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1030          * in the current firmware buffer doesn't start with 0x01 or
1031          * the size of remain buffer is smaller than HCI command header,
1032          * the firmware file is corrupted and it should stop the patching
1033          * process.
1034          */
1035         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1036                 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1037                 return -EINVAL;
1038         }
1039         (*fw_ptr)++;
1040         remain--;
1041
1042         cmd = (struct hci_command_hdr *)(*fw_ptr);
1043         *fw_ptr += sizeof(*cmd);
1044         remain -= sizeof(*cmd);
1045
1046         /* Ensure that the remain firmware data is long enough than the length
1047          * of command parameter. If not, the firmware file is corrupted.
1048          */
1049         if (remain < cmd->plen) {
1050                 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1051                 return -EFAULT;
1052         }
1053
1054         /* If there is a command that loads a patch in the firmware
1055          * file, then enable the patch upon success, otherwise just
1056          * disable the manufacturer mode, for example patch activation
1057          * is not required when the default firmware patch file is used
1058          * because there are no patch data to load.
1059          */
1060         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1061                 *disable_patch = 0;
1062
1063         cmd_param = *fw_ptr;
1064         *fw_ptr += cmd->plen;
1065         remain -= cmd->plen;
1066
1067         /* This reads the expected events when the above command is sent to the
1068          * device. Some vendor commands expects more than one events, for
1069          * example command status event followed by vendor specific event.
1070          * For this case, it only keeps the last expected event. so the command
1071          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1072          * last expected event.
1073          */
1074         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1075                 (*fw_ptr)++;
1076                 remain--;
1077
1078                 evt = (struct hci_event_hdr *)(*fw_ptr);
1079                 *fw_ptr += sizeof(*evt);
1080                 remain -= sizeof(*evt);
1081
1082                 if (remain < evt->plen) {
1083                         BT_ERR("%s Intel fw corrupted: invalid evt len",
1084                                hdev->name);
1085                         return -EFAULT;
1086                 }
1087
1088                 evt_param = *fw_ptr;
1089                 *fw_ptr += evt->plen;
1090                 remain -= evt->plen;
1091         }
1092
1093         /* Every HCI commands in the firmware file has its correspond event.
1094          * If event is not found or remain is smaller than zero, the firmware
1095          * file is corrupted.
1096          */
1097         if (!evt || !evt_param || remain < 0) {
1098                 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1099                 return -EFAULT;
1100         }
1101
1102         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1103                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1104         if (IS_ERR(skb)) {
1105                 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1106                        hdev->name, cmd->opcode, PTR_ERR(skb));
1107                 return PTR_ERR(skb);
1108         }
1109
1110         /* It ensures that the returned event matches the event data read from
1111          * the firmware file. At fist, it checks the length and then
1112          * the contents of the event.
1113          */
1114         if (skb->len != evt->plen) {
1115                 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1116                        le16_to_cpu(cmd->opcode));
1117                 kfree_skb(skb);
1118                 return -EFAULT;
1119         }
1120
1121         if (memcmp(skb->data, evt_param, evt->plen)) {
1122                 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1123                        hdev->name, le16_to_cpu(cmd->opcode));
1124                 kfree_skb(skb);
1125                 return -EFAULT;
1126         }
1127         kfree_skb(skb);
1128
1129         return 0;
1130 }
1131
1132 static int btusb_setup_intel(struct hci_dev *hdev)
1133 {
1134         struct sk_buff *skb;
1135         const struct firmware *fw;
1136         const u8 *fw_ptr;
1137         int disable_patch;
1138         struct intel_version *ver;
1139
1140         const u8 mfg_enable[] = { 0x01, 0x00 };
1141         const u8 mfg_disable[] = { 0x00, 0x00 };
1142         const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
1143         const u8 mfg_reset_activate[] = { 0x00, 0x02 };
1144
1145         BT_DBG("%s", hdev->name);
1146
1147         /* The controller has a bug with the first HCI command sent to it
1148          * returning number of completed commands as zero. This would stall the
1149          * command processing in the Bluetooth core.
1150          *
1151          * As a workaround, send HCI Reset command first which will reset the
1152          * number of completed commands and allow normal command processing
1153          * from now on.
1154          */
1155         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1156         if (IS_ERR(skb)) {
1157                 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1158                        hdev->name, PTR_ERR(skb));
1159                 return PTR_ERR(skb);
1160         }
1161         kfree_skb(skb);
1162
1163         /* Read Intel specific controller version first to allow selection of
1164          * which firmware file to load.
1165          *
1166          * The returned information are hardware variant and revision plus
1167          * firmware variant, revision and build number.
1168          */
1169         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1170         if (IS_ERR(skb)) {
1171                 BT_ERR("%s reading Intel fw version command failed (%ld)",
1172                        hdev->name, PTR_ERR(skb));
1173                 return PTR_ERR(skb);
1174         }
1175
1176         if (skb->len != sizeof(*ver)) {
1177                 BT_ERR("%s Intel version event length mismatch", hdev->name);
1178                 kfree_skb(skb);
1179                 return -EIO;
1180         }
1181
1182         ver = (struct intel_version *)skb->data;
1183         if (ver->status) {
1184                 BT_ERR("%s Intel fw version event failed (%02x)", hdev->name,
1185                        ver->status);
1186                 kfree_skb(skb);
1187                 return -bt_to_errno(ver->status);
1188         }
1189
1190         BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1191                 hdev->name, ver->hw_platform, ver->hw_variant,
1192                 ver->hw_revision, ver->fw_variant,  ver->fw_revision,
1193                 ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
1194                 ver->fw_patch_num);
1195
1196         /* fw_patch_num indicates the version of patch the device currently
1197          * have. If there is no patch data in the device, it is always 0x00.
1198          * So, if it is other than 0x00, no need to patch the deivce again.
1199          */
1200         if (ver->fw_patch_num) {
1201                 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1202                         hdev->name, ver->fw_patch_num);
1203                 kfree_skb(skb);
1204                 return 0;
1205         }
1206
1207         /* Opens the firmware patch file based on the firmware version read
1208          * from the controller. If it fails to open the matching firmware
1209          * patch file, it tries to open the default firmware patch file.
1210          * If no patch file is found, allow the device to operate without
1211          * a patch.
1212          */
1213         fw = btusb_setup_intel_get_fw(hdev, ver);
1214         if (!fw) {
1215                 kfree_skb(skb);
1216                 return 0;
1217         }
1218         fw_ptr = fw->data;
1219
1220         /* This Intel specific command enables the manufacturer mode of the
1221          * controller.
1222          *
1223          * Only while this mode is enabled, the driver can download the
1224          * firmware patch data and configuration parameters.
1225          */
1226         skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
1227         if (IS_ERR(skb)) {
1228                 BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
1229                        hdev->name, PTR_ERR(skb));
1230                 release_firmware(fw);
1231                 return PTR_ERR(skb);
1232         }
1233
1234         if (skb->data[0]) {
1235                 u8 evt_status = skb->data[0];
1236                 BT_ERR("%s enable Intel manufacturer mode event failed (%02x)",
1237                        hdev->name, evt_status);
1238                 kfree_skb(skb);
1239                 release_firmware(fw);
1240                 return -bt_to_errno(evt_status);
1241         }
1242         kfree_skb(skb);
1243
1244         disable_patch = 1;
1245
1246         /* The firmware data file consists of list of Intel specific HCI
1247          * commands and its expected events. The first byte indicates the
1248          * type of the message, either HCI command or HCI event.
1249          *
1250          * It reads the command and its expected event from the firmware file,
1251          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1252          * the returned event is compared with the event read from the firmware
1253          * file and it will continue until all the messages are downloaded to
1254          * the controller.
1255          *
1256          * Once the firmware patching is completed successfully,
1257          * the manufacturer mode is disabled with reset and activating the
1258          * downloaded patch.
1259          *
1260          * If the firmware patching fails, the manufacturer mode is
1261          * disabled with reset and deactivating the patch.
1262          *
1263          * If the default patch file is used, no reset is done when disabling
1264          * the manufacturer.
1265          */
1266         while (fw->size > fw_ptr - fw->data) {
1267                 int ret;
1268
1269                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1270                                                  &disable_patch);
1271                 if (ret < 0)
1272                         goto exit_mfg_deactivate;
1273         }
1274
1275         release_firmware(fw);
1276
1277         if (disable_patch)
1278                 goto exit_mfg_disable;
1279
1280         /* Patching completed successfully and disable the manufacturer mode
1281          * with reset and activate the downloaded firmware patches.
1282          */
1283         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
1284                              mfg_reset_activate, HCI_INIT_TIMEOUT);
1285         if (IS_ERR(skb)) {
1286                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1287                        hdev->name, PTR_ERR(skb));
1288                 return PTR_ERR(skb);
1289         }
1290         kfree_skb(skb);
1291
1292         BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1293                 hdev->name);
1294
1295         return 0;
1296
1297 exit_mfg_disable:
1298         /* Disable the manufacturer mode without reset */
1299         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
1300                              HCI_INIT_TIMEOUT);
1301         if (IS_ERR(skb)) {
1302                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1303                        hdev->name, PTR_ERR(skb));
1304                 return PTR_ERR(skb);
1305         }
1306         kfree_skb(skb);
1307
1308         BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1309         return 0;
1310
1311 exit_mfg_deactivate:
1312         release_firmware(fw);
1313
1314         /* Patching failed. Disable the manufacturer mode with reset and
1315          * deactivate the downloaded firmware patches.
1316          */
1317         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
1318                              mfg_reset_deactivate, HCI_INIT_TIMEOUT);
1319         if (IS_ERR(skb)) {
1320                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1321                        hdev->name, PTR_ERR(skb));
1322                 return PTR_ERR(skb);
1323         }
1324         kfree_skb(skb);
1325
1326         BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1327                 hdev->name);
1328
1329         return 0;
1330 }
1331
1332 static int btusb_probe(struct usb_interface *intf,
1333                                 const struct usb_device_id *id)
1334 {
1335         struct usb_endpoint_descriptor *ep_desc;
1336         struct btusb_data *data;
1337         struct hci_dev *hdev;
1338         int i, err;
1339
1340         BT_DBG("intf %p id %p", intf, id);
1341
1342         /* interface numbers are hardcoded in the spec */
1343         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
1344                 return -ENODEV;
1345
1346         if (!id->driver_info) {
1347                 const struct usb_device_id *match;
1348                 match = usb_match_id(intf, blacklist_table);
1349                 if (match)
1350                         id = match;
1351         }
1352
1353         if (id->driver_info == BTUSB_IGNORE)
1354                 return -ENODEV;
1355
1356         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
1357                 return -ENODEV;
1358
1359         if (ignore_csr && id->driver_info & BTUSB_CSR)
1360                 return -ENODEV;
1361
1362         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
1363                 return -ENODEV;
1364
1365         if (id->driver_info & BTUSB_ATH3012) {
1366                 struct usb_device *udev = interface_to_usbdev(intf);
1367
1368                 /* Old firmware would otherwise let ath3k driver load
1369                  * patch and sysconfig files */
1370                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
1371                         return -ENODEV;
1372         }
1373
1374         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
1375         if (!data)
1376                 return -ENOMEM;
1377
1378         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1379                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1380
1381                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
1382                         data->intr_ep = ep_desc;
1383                         continue;
1384                 }
1385
1386                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
1387                         data->bulk_tx_ep = ep_desc;
1388                         continue;
1389                 }
1390
1391                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
1392                         data->bulk_rx_ep = ep_desc;
1393                         continue;
1394                 }
1395         }
1396
1397         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
1398                 return -ENODEV;
1399
1400         data->cmdreq_type = USB_TYPE_CLASS;
1401
1402         data->udev = interface_to_usbdev(intf);
1403         data->intf = intf;
1404
1405         spin_lock_init(&data->lock);
1406
1407         INIT_WORK(&data->work, btusb_work);
1408         INIT_WORK(&data->waker, btusb_waker);
1409         spin_lock_init(&data->txlock);
1410
1411         init_usb_anchor(&data->tx_anchor);
1412         init_usb_anchor(&data->intr_anchor);
1413         init_usb_anchor(&data->bulk_anchor);
1414         init_usb_anchor(&data->isoc_anchor);
1415         init_usb_anchor(&data->deferred);
1416
1417         hdev = hci_alloc_dev();
1418         if (!hdev)
1419                 return -ENOMEM;
1420
1421         hdev->bus = HCI_USB;
1422         hci_set_drvdata(hdev, data);
1423
1424         data->hdev = hdev;
1425
1426         SET_HCIDEV_DEV(hdev, &intf->dev);
1427
1428         hdev->open   = btusb_open;
1429         hdev->close  = btusb_close;
1430         hdev->flush  = btusb_flush;
1431         hdev->send   = btusb_send_frame;
1432         hdev->notify = btusb_notify;
1433
1434         if (id->driver_info & BTUSB_BCM92035)
1435                 hdev->setup = btusb_setup_bcm92035;
1436
1437         if (id->driver_info & BTUSB_INTEL)
1438                 hdev->setup = btusb_setup_intel;
1439
1440         /* Interface numbers are hardcoded in the specification */
1441         data->isoc = usb_ifnum_to_if(data->udev, 1);
1442
1443         if (!reset)
1444                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1445
1446         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1447                 if (!disable_scofix)
1448                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1449         }
1450
1451         if (id->driver_info & BTUSB_BROKEN_ISOC)
1452                 data->isoc = NULL;
1453
1454         if (id->driver_info & BTUSB_DIGIANSWER) {
1455                 data->cmdreq_type = USB_TYPE_VENDOR;
1456                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1457         }
1458
1459         if (id->driver_info & BTUSB_CSR) {
1460                 struct usb_device *udev = data->udev;
1461
1462                 /* Old firmware would otherwise execute USB reset */
1463                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1464                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1465         }
1466
1467         if (id->driver_info & BTUSB_SNIFFER) {
1468                 struct usb_device *udev = data->udev;
1469
1470                 /* New sniffer firmware has crippled HCI interface */
1471                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1472                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1473
1474                 data->isoc = NULL;
1475         }
1476
1477         if (data->isoc) {
1478                 err = usb_driver_claim_interface(&btusb_driver,
1479                                                         data->isoc, data);
1480                 if (err < 0) {
1481                         hci_free_dev(hdev);
1482                         return err;
1483                 }
1484         }
1485
1486         err = hci_register_dev(hdev);
1487         if (err < 0) {
1488                 hci_free_dev(hdev);
1489                 return err;
1490         }
1491
1492         usb_set_intfdata(intf, data);
1493
1494         return 0;
1495 }
1496
1497 static void btusb_disconnect(struct usb_interface *intf)
1498 {
1499         struct btusb_data *data = usb_get_intfdata(intf);
1500         struct hci_dev *hdev;
1501
1502         BT_DBG("intf %p", intf);
1503
1504         if (!data)
1505                 return;
1506
1507         hdev = data->hdev;
1508         usb_set_intfdata(data->intf, NULL);
1509
1510         if (data->isoc)
1511                 usb_set_intfdata(data->isoc, NULL);
1512
1513         hci_unregister_dev(hdev);
1514
1515         if (intf == data->isoc)
1516                 usb_driver_release_interface(&btusb_driver, data->intf);
1517         else if (data->isoc)
1518                 usb_driver_release_interface(&btusb_driver, data->isoc);
1519
1520         hci_free_dev(hdev);
1521 }
1522
1523 #ifdef CONFIG_PM
1524 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1525 {
1526         struct btusb_data *data = usb_get_intfdata(intf);
1527
1528         BT_DBG("intf %p", intf);
1529
1530         if (data->suspend_count++)
1531                 return 0;
1532
1533         spin_lock_irq(&data->txlock);
1534         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1535                 set_bit(BTUSB_SUSPENDING, &data->flags);
1536                 spin_unlock_irq(&data->txlock);
1537         } else {
1538                 spin_unlock_irq(&data->txlock);
1539                 data->suspend_count--;
1540                 return -EBUSY;
1541         }
1542
1543         cancel_work_sync(&data->work);
1544
1545         btusb_stop_traffic(data);
1546         usb_kill_anchored_urbs(&data->tx_anchor);
1547
1548         return 0;
1549 }
1550
1551 static void play_deferred(struct btusb_data *data)
1552 {
1553         struct urb *urb;
1554         int err;
1555
1556         while ((urb = usb_get_from_anchor(&data->deferred))) {
1557                 err = usb_submit_urb(urb, GFP_ATOMIC);
1558                 if (err < 0)
1559                         break;
1560
1561                 data->tx_in_flight++;
1562         }
1563         usb_scuttle_anchored_urbs(&data->deferred);
1564 }
1565
1566 static int btusb_resume(struct usb_interface *intf)
1567 {
1568         struct btusb_data *data = usb_get_intfdata(intf);
1569         struct hci_dev *hdev = data->hdev;
1570         int err = 0;
1571
1572         BT_DBG("intf %p", intf);
1573
1574         if (--data->suspend_count)
1575                 return 0;
1576
1577         if (!test_bit(HCI_RUNNING, &hdev->flags))
1578                 goto done;
1579
1580         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1581                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1582                 if (err < 0) {
1583                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1584                         goto failed;
1585                 }
1586         }
1587
1588         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1589                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1590                 if (err < 0) {
1591                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1592                         goto failed;
1593                 }
1594
1595                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1596         }
1597
1598         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1599                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1600                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1601                 else
1602                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1603         }
1604
1605         spin_lock_irq(&data->txlock);
1606         play_deferred(data);
1607         clear_bit(BTUSB_SUSPENDING, &data->flags);
1608         spin_unlock_irq(&data->txlock);
1609         schedule_work(&data->work);
1610
1611         return 0;
1612
1613 failed:
1614         usb_scuttle_anchored_urbs(&data->deferred);
1615 done:
1616         spin_lock_irq(&data->txlock);
1617         clear_bit(BTUSB_SUSPENDING, &data->flags);
1618         spin_unlock_irq(&data->txlock);
1619
1620         return err;
1621 }
1622 #endif
1623
1624 static struct usb_driver btusb_driver = {
1625         .name           = "btusb",
1626         .probe          = btusb_probe,
1627         .disconnect     = btusb_disconnect,
1628 #ifdef CONFIG_PM
1629         .suspend        = btusb_suspend,
1630         .resume         = btusb_resume,
1631         .reset_resume   = btusb_resume,
1632 #endif
1633         .id_table       = btusb_table,
1634         .supports_autosuspend = 1,
1635         .disable_hub_initiated_lpm = 1,
1636 };
1637
1638 module_usb_driver(btusb_driver);
1639
1640 module_param(ignore_dga, bool, 0644);
1641 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1642
1643 module_param(ignore_csr, bool, 0644);
1644 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1645
1646 module_param(ignore_sniffer, bool, 0644);
1647 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1648
1649 module_param(disable_scofix, bool, 0644);
1650 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1651
1652 module_param(force_scofix, bool, 0644);
1653 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1654
1655 module_param(reset, bool, 0644);
1656 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1657
1658 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1659 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1660 MODULE_VERSION(VERSION);
1661 MODULE_LICENSE("GPL");