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 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(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         /* IMC Networks - Broadcom based */
 120         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01) },
 121
 122         { }     /* Terminating entry */
 123 };
 124
 125 MODULE_DEVICE_TABLE(usb, btusb_table);
 126
 127 static const struct usb_device_id blacklist_table[] = {
 128         /* CSR BlueCore devices */
 129         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 130
 131         /* Broadcom BCM2033 without firmware */
 132         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 133
 134         /* Atheros 3011 with sflash firmware */
 135         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 136         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 137         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 138         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 139         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 140         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 141
 142         /* Atheros AR9285 Malbec with sflash firmware */
 143         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 144
 145         /* Atheros 3012 with sflash firmware */
 146         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 147         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 148         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 149         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 150         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
 151         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 152         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 153         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 154         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 155         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 156         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 157         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 158         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 159         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 160         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 161         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 162         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 163         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 164         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 165         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 166         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 167         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 168         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 169         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 170         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 171         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 172         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 173         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 174
 175         /* Atheros AR5BBU12 with sflash firmware */
 176         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 177
 178         /* Atheros AR5BBU12 with sflash firmware */
 179         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 180         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 181
 182         /* Broadcom BCM2035 */
 183         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 184         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 185         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 186
 187         /* Broadcom BCM2045 */
 188         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 189         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 190
 191         /* IBM/Lenovo ThinkPad with Broadcom chip */
 192         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 193         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 194
 195         /* HP laptop with Broadcom chip */
 196         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 197
 198         /* Dell laptop with Broadcom chip */
 199         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 200
 201         /* Dell Wireless 370 and 410 devices */
 202         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 203         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 204
 205         /* Belkin F8T012 and F8T013 devices */
 206         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 207         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 208
 209         /* Asus WL-BTD202 device */
 210         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 211
 212         /* Kensington Bluetooth USB adapter */
 213         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 214
 215         /* RTX Telecom based adapters with buggy SCO support */
 216         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 217         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 218
 219         /* CONWISE Technology based adapters with buggy SCO support */
 220         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 221
 222         /* Digianswer devices */
 223         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 224         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 225
 226         /* CSR BlueCore Bluetooth Sniffer */
 227         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
 228
 229         /* Frontline ComProbe Bluetooth Sniffer */
 230         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
 231
 232         /* Intel Bluetooth device */
 233         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 234         { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
 235
 236         { }     /* Terminating entry */
 237 };
 238
 239 #define BTUSB_MAX_ISOC_FRAMES   10
 240
 241 #define BTUSB_INTR_RUNNING      0
 242 #define BTUSB_BULK_RUNNING      1
 243 #define BTUSB_ISOC_RUNNING      2
 244 #define BTUSB_SUSPENDING        3
 245 #define BTUSB_DID_ISO_RESUME    4
 246
 247 struct btusb_data {
 248         struct hci_dev       *hdev;
 249         struct usb_device    *udev;
 250         struct usb_interface *intf;
 251         struct usb_interface *isoc;
 252
 253         spinlock_t lock;
 254
 255         unsigned long flags;
 256
 257         struct work_struct work;
 258         struct work_struct waker;
 259
 260         struct usb_anchor tx_anchor;
 261         struct usb_anchor intr_anchor;
 262         struct usb_anchor bulk_anchor;
 263         struct usb_anchor isoc_anchor;
 264         struct usb_anchor deferred;
 265         int tx_in_flight;
 266         spinlock_t txlock;
 267
 268         struct usb_endpoint_descriptor *intr_ep;
 269         struct usb_endpoint_descriptor *bulk_tx_ep;
 270         struct usb_endpoint_descriptor *bulk_rx_ep;
 271         struct usb_endpoint_descriptor *isoc_tx_ep;
 272         struct usb_endpoint_descriptor *isoc_rx_ep;
 273
 274         __u8 cmdreq_type;
 275
 276         unsigned int sco_num;
 277         int isoc_altsetting;
 278         int suspend_count;
 279 };
 280
 281 static int inc_tx(struct btusb_data *data)
 282 {
 283         unsigned long flags;
 284         int rv;
 285
 286         spin_lock_irqsave(&data->txlock, flags);
 287         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
 288         if (!rv)
 289                 data->tx_in_flight++;
 290         spin_unlock_irqrestore(&data->txlock, flags);
 291
 292         return rv;
 293 }
 294
 295 static void btusb_intr_complete(struct urb *urb)
 296 {
 297         struct hci_dev *hdev = urb->context;
 298         struct btusb_data *data = hci_get_drvdata(hdev);
 299         int err;
 300
 301         BT_DBG("%s urb %p status %d count %d", hdev->name,
 302                                         urb, urb->status, urb->actual_length);
 303
 304         if (!test_bit(HCI_RUNNING, &hdev->flags))
 305                 return;
 306
 307         if (urb->status == 0) {
 308                 hdev->stat.byte_rx += urb->actual_length;
 309
 310                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
 311                                                 urb->transfer_buffer,
 312                                                 urb->actual_length) < 0) {
 313                         BT_ERR("%s corrupted event packet", hdev->name);
 314                         hdev->stat.err_rx++;
 315                 }
 316         }
 317
 318         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 319                 return;
 320
 321         usb_mark_last_busy(data->udev);
 322         usb_anchor_urb(urb, &data->intr_anchor);
 323
 324         err = usb_submit_urb(urb, GFP_ATOMIC);
 325         if (err < 0) {
 326                 /* -EPERM: urb is being killed;
 327                  * -ENODEV: device got disconnected */
 328                 if (err != -EPERM && err != -ENODEV)
 329                         BT_ERR("%s urb %p failed to resubmit (%d)",
 330                                                 hdev->name, urb, -err);
 331                 usb_unanchor_urb(urb);
 332         }
 333 }
 334
 335 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 336 {
 337         struct btusb_data *data = hci_get_drvdata(hdev);
 338         struct urb *urb;
 339         unsigned char *buf;
 340         unsigned int pipe;
 341         int err, size;
 342
 343         BT_DBG("%s", hdev->name);
 344
 345         if (!data->intr_ep)
 346                 return -ENODEV;
 347
 348         urb = usb_alloc_urb(0, mem_flags);
 349         if (!urb)
 350                 return -ENOMEM;
 351
 352         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 353
 354         buf = kmalloc(size, mem_flags);
 355         if (!buf) {
 356                 usb_free_urb(urb);
 357                 return -ENOMEM;
 358         }
 359
 360         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 361
 362         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 363                                                 btusb_intr_complete, hdev,
 364                                                 data->intr_ep->bInterval);
 365
 366         urb->transfer_flags |= URB_FREE_BUFFER;
 367
 368         usb_anchor_urb(urb, &data->intr_anchor);
 369
 370         err = usb_submit_urb(urb, mem_flags);
 371         if (err < 0) {
 372                 if (err != -EPERM && err != -ENODEV)
 373                         BT_ERR("%s urb %p submission failed (%d)",
 374                                                 hdev->name, urb, -err);
 375                 usb_unanchor_urb(urb);
 376         }
 377
 378         usb_free_urb(urb);
 379
 380         return err;
 381 }
 382
 383 static void btusb_bulk_complete(struct urb *urb)
 384 {
 385         struct hci_dev *hdev = urb->context;
 386         struct btusb_data *data = hci_get_drvdata(hdev);
 387         int err;
 388
 389         BT_DBG("%s urb %p status %d count %d", hdev->name,
 390                                         urb, urb->status, urb->actual_length);
 391
 392         if (!test_bit(HCI_RUNNING, &hdev->flags))
 393                 return;
 394
 395         if (urb->status == 0) {
 396                 hdev->stat.byte_rx += urb->actual_length;
 397
 398                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
 399                                                 urb->transfer_buffer,
 400                                                 urb->actual_length) < 0) {
 401                         BT_ERR("%s corrupted ACL packet", hdev->name);
 402                         hdev->stat.err_rx++;
 403                 }
 404         }
 405
 406         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 407                 return;
 408
 409         usb_anchor_urb(urb, &data->bulk_anchor);
 410         usb_mark_last_busy(data->udev);
 411
 412         err = usb_submit_urb(urb, GFP_ATOMIC);
 413         if (err < 0) {
 414                 /* -EPERM: urb is being killed;
 415                  * -ENODEV: device got disconnected */
 416                 if (err != -EPERM && err != -ENODEV)
 417                         BT_ERR("%s urb %p failed to resubmit (%d)",
 418                                                 hdev->name, urb, -err);
 419                 usb_unanchor_urb(urb);
 420         }
 421 }
 422
 423 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 424 {
 425         struct btusb_data *data = hci_get_drvdata(hdev);
 426         struct urb *urb;
 427         unsigned char *buf;
 428         unsigned int pipe;
 429         int err, size = HCI_MAX_FRAME_SIZE;
 430
 431         BT_DBG("%s", hdev->name);
 432
 433         if (!data->bulk_rx_ep)
 434                 return -ENODEV;
 435
 436         urb = usb_alloc_urb(0, mem_flags);
 437         if (!urb)
 438                 return -ENOMEM;
 439
 440         buf = kmalloc(size, mem_flags);
 441         if (!buf) {
 442                 usb_free_urb(urb);
 443                 return -ENOMEM;
 444         }
 445
 446         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 447
 448         usb_fill_bulk_urb(urb, data->udev, pipe,
 449                                         buf, size, btusb_bulk_complete, hdev);
 450
 451         urb->transfer_flags |= URB_FREE_BUFFER;
 452
 453         usb_mark_last_busy(data->udev);
 454         usb_anchor_urb(urb, &data->bulk_anchor);
 455
 456         err = usb_submit_urb(urb, mem_flags);
 457         if (err < 0) {
 458                 if (err != -EPERM && err != -ENODEV)
 459                         BT_ERR("%s urb %p submission failed (%d)",
 460                                                 hdev->name, urb, -err);
 461                 usb_unanchor_urb(urb);
 462         }
 463
 464         usb_free_urb(urb);
 465
 466         return err;
 467 }
 468
 469 static void btusb_isoc_complete(struct urb *urb)
 470 {
 471         struct hci_dev *hdev = urb->context;
 472         struct btusb_data *data = hci_get_drvdata(hdev);
 473         int i, err;
 474
 475         BT_DBG("%s urb %p status %d count %d", hdev->name,
 476                                         urb, urb->status, urb->actual_length);
 477
 478         if (!test_bit(HCI_RUNNING, &hdev->flags))
 479                 return;
 480
 481         if (urb->status == 0) {
 482                 for (i = 0; i < urb->number_of_packets; i++) {
 483                         unsigned int offset = urb->iso_frame_desc[i].offset;
 484                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 485
 486                         if (urb->iso_frame_desc[i].status)
 487                                 continue;
 488
 489                         hdev->stat.byte_rx += length;
 490
 491                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
 492                                                 urb->transfer_buffer + offset,
 493                                                                 length) < 0) {
 494                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 495                                 hdev->stat.err_rx++;
 496                         }
 497                 }
 498         }
 499
 500         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 501                 return;
 502
 503         usb_anchor_urb(urb, &data->isoc_anchor);
 504
 505         err = usb_submit_urb(urb, GFP_ATOMIC);
 506         if (err < 0) {
 507                 /* -EPERM: urb is being killed;
 508                  * -ENODEV: device got disconnected */
 509                 if (err != -EPERM && err != -ENODEV)
 510                         BT_ERR("%s urb %p failed to resubmit (%d)",
 511                                                 hdev->name, urb, -err);
 512                 usb_unanchor_urb(urb);
 513         }
 514 }
 515
 516 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 517 {
 518         int i, offset = 0;
 519
 520         BT_DBG("len %d mtu %d", len, mtu);
 521
 522         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 523                                         i++, offset += mtu, len -= mtu) {
 524                 urb->iso_frame_desc[i].offset = offset;
 525                 urb->iso_frame_desc[i].length = mtu;
 526         }
 527
 528         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 529                 urb->iso_frame_desc[i].offset = offset;
 530                 urb->iso_frame_desc[i].length = len;
 531                 i++;
 532         }
 533
 534         urb->number_of_packets = i;
 535 }
 536
 537 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 538 {
 539         struct btusb_data *data = hci_get_drvdata(hdev);
 540         struct urb *urb;
 541         unsigned char *buf;
 542         unsigned int pipe;
 543         int err, size;
 544
 545         BT_DBG("%s", hdev->name);
 546
 547         if (!data->isoc_rx_ep)
 548                 return -ENODEV;
 549
 550         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 551         if (!urb)
 552                 return -ENOMEM;
 553
 554         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 555                                                 BTUSB_MAX_ISOC_FRAMES;
 556
 557         buf = kmalloc(size, mem_flags);
 558         if (!buf) {
 559                 usb_free_urb(urb);
 560                 return -ENOMEM;
 561         }
 562
 563         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 564
 565         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 566                                 hdev, data->isoc_rx_ep->bInterval);
 567
 568         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
 569
 570         __fill_isoc_descriptor(urb, size,
 571                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 572
 573         usb_anchor_urb(urb, &data->isoc_anchor);
 574
 575         err = usb_submit_urb(urb, mem_flags);
 576         if (err < 0) {
 577                 if (err != -EPERM && err != -ENODEV)
 578                         BT_ERR("%s urb %p submission failed (%d)",
 579                                                 hdev->name, urb, -err);
 580                 usb_unanchor_urb(urb);
 581         }
 582
 583         usb_free_urb(urb);
 584
 585         return err;
 586 }
 587
 588 static void btusb_tx_complete(struct urb *urb)
 589 {
 590         struct sk_buff *skb = urb->context;
 591         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 592         struct btusb_data *data = hci_get_drvdata(hdev);
 593
 594         BT_DBG("%s urb %p status %d count %d", hdev->name,
 595                                         urb, urb->status, urb->actual_length);
 596
 597         if (!test_bit(HCI_RUNNING, &hdev->flags))
 598                 goto done;
 599
 600         if (!urb->status)
 601                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 602         else
 603                 hdev->stat.err_tx++;
 604
 605 done:
 606         spin_lock(&data->txlock);
 607         data->tx_in_flight--;
 608         spin_unlock(&data->txlock);
 609
 610         kfree(urb->setup_packet);
 611
 612         kfree_skb(skb);
 613 }
 614
 615 static void btusb_isoc_tx_complete(struct urb *urb)
 616 {
 617         struct sk_buff *skb = urb->context;
 618         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 619
 620         BT_DBG("%s urb %p status %d count %d", hdev->name,
 621                                         urb, urb->status, urb->actual_length);
 622
 623         if (!test_bit(HCI_RUNNING, &hdev->flags))
 624                 goto done;
 625
 626         if (!urb->status)
 627                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 628         else
 629                 hdev->stat.err_tx++;
 630
 631 done:
 632         kfree(urb->setup_packet);
 633
 634         kfree_skb(skb);
 635 }
 636
 637 static int btusb_open(struct hci_dev *hdev)
 638 {
 639         struct btusb_data *data = hci_get_drvdata(hdev);
 640         int err;
 641
 642         BT_DBG("%s", hdev->name);
 643
 644         err = usb_autopm_get_interface(data->intf);
 645         if (err < 0)
 646                 return err;
 647
 648         data->intf->needs_remote_wakeup = 1;
 649
 650         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 651                 goto done;
 652
 653         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 654                 goto done;
 655
 656         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 657         if (err < 0)
 658                 goto failed;
 659
 660         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 661         if (err < 0) {
 662                 usb_kill_anchored_urbs(&data->intr_anchor);
 663                 goto failed;
 664         }
 665
 666         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 667         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 668
 669 done:
 670         usb_autopm_put_interface(data->intf);
 671         return 0;
 672
 673 failed:
 674         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 675         clear_bit(HCI_RUNNING, &hdev->flags);
 676         usb_autopm_put_interface(data->intf);
 677         return err;
 678 }
 679
 680 static void btusb_stop_traffic(struct btusb_data *data)
 681 {
 682         usb_kill_anchored_urbs(&data->intr_anchor);
 683         usb_kill_anchored_urbs(&data->bulk_anchor);
 684         usb_kill_anchored_urbs(&data->isoc_anchor);
 685 }
 686
 687 static int btusb_close(struct hci_dev *hdev)
 688 {
 689         struct btusb_data *data = hci_get_drvdata(hdev);
 690         int err;
 691
 692         BT_DBG("%s", hdev->name);
 693
 694         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 695                 return 0;
 696
 697         cancel_work_sync(&data->work);
 698         cancel_work_sync(&data->waker);
 699
 700         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 701         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 702         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 703
 704         btusb_stop_traffic(data);
 705         err = usb_autopm_get_interface(data->intf);
 706         if (err < 0)
 707                 goto failed;
 708
 709         data->intf->needs_remote_wakeup = 0;
 710         usb_autopm_put_interface(data->intf);
 711
 712 failed:
 713         usb_scuttle_anchored_urbs(&data->deferred);
 714         return 0;
 715 }
 716
 717 static int btusb_flush(struct hci_dev *hdev)
 718 {
 719         struct btusb_data *data = hci_get_drvdata(hdev);
 720
 721         BT_DBG("%s", hdev->name);
 722
 723         usb_kill_anchored_urbs(&data->tx_anchor);
 724
 725         return 0;
 726 }
 727
 728 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
 729 {
 730         struct btusb_data *data = hci_get_drvdata(hdev);
 731         struct usb_ctrlrequest *dr;
 732         struct urb *urb;
 733         unsigned int pipe;
 734         int err;
 735
 736         BT_DBG("%s", hdev->name);
 737
 738         if (!test_bit(HCI_RUNNING, &hdev->flags))
 739                 return -EBUSY;
 740
 741         skb->dev = (void *) hdev;
 742
 743         switch (bt_cb(skb)->pkt_type) {
 744         case HCI_COMMAND_PKT:
 745                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 746                 if (!urb)
 747                         return -ENOMEM;
 748
 749                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
 750                 if (!dr) {
 751                         usb_free_urb(urb);
 752                         return -ENOMEM;
 753                 }
 754
 755                 dr->bRequestType = data->cmdreq_type;
 756                 dr->bRequest     = 0;
 757                 dr->wIndex       = 0;
 758                 dr->wValue       = 0;
 759                 dr->wLength      = __cpu_to_le16(skb->len);
 760
 761                 pipe = usb_sndctrlpipe(data->udev, 0x00);
 762
 763                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
 764                                 skb->data, skb->len, btusb_tx_complete, skb);
 765
 766                 hdev->stat.cmd_tx++;
 767                 break;
 768
 769         case HCI_ACLDATA_PKT:
 770                 if (!data->bulk_tx_ep)
 771                         return -ENODEV;
 772
 773                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 774                 if (!urb)
 775                         return -ENOMEM;
 776
 777                 pipe = usb_sndbulkpipe(data->udev,
 778                                         data->bulk_tx_ep->bEndpointAddress);
 779
 780                 usb_fill_bulk_urb(urb, data->udev, pipe,
 781                                 skb->data, skb->len, btusb_tx_complete, skb);
 782
 783                 hdev->stat.acl_tx++;
 784                 break;
 785
 786         case HCI_SCODATA_PKT:
 787                 if (!data->isoc_tx_ep || hci_conn_num(hdev, SCO_LINK) < 1)
 788                         return -ENODEV;
 789
 790                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
 791                 if (!urb)
 792                         return -ENOMEM;
 793
 794                 pipe = usb_sndisocpipe(data->udev,
 795                                         data->isoc_tx_ep->bEndpointAddress);
 796
 797                 usb_fill_int_urb(urb, data->udev, pipe,
 798                                 skb->data, skb->len, btusb_isoc_tx_complete,
 799                                 skb, data->isoc_tx_ep->bInterval);
 800
 801                 urb->transfer_flags  = URB_ISO_ASAP;
 802
 803                 __fill_isoc_descriptor(urb, skb->len,
 804                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 805
 806                 hdev->stat.sco_tx++;
 807                 goto skip_waking;
 808
 809         default:
 810                 return -EILSEQ;
 811         }
 812
 813         err = inc_tx(data);
 814         if (err) {
 815                 usb_anchor_urb(urb, &data->deferred);
 816                 schedule_work(&data->waker);
 817                 err = 0;
 818                 goto done;
 819         }
 820
 821 skip_waking:
 822         usb_anchor_urb(urb, &data->tx_anchor);
 823
 824         err = usb_submit_urb(urb, GFP_ATOMIC);
 825         if (err < 0) {
 826                 if (err != -EPERM && err != -ENODEV)
 827                         BT_ERR("%s urb %p submission failed (%d)",
 828                                                 hdev->name, urb, -err);
 829                 kfree(urb->setup_packet);
 830                 usb_unanchor_urb(urb);
 831         } else {
 832                 usb_mark_last_busy(data->udev);
 833         }
 834
 835 done:
 836         usb_free_urb(urb);
 837         return err;
 838 }
 839
 840 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 841 {
 842         struct btusb_data *data = hci_get_drvdata(hdev);
 843
 844         BT_DBG("%s evt %d", hdev->name, evt);
 845
 846         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
 847                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
 848                 schedule_work(&data->work);
 849         }
 850 }
 851
 852 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
 853 {
 854         struct btusb_data *data = hci_get_drvdata(hdev);
 855         struct usb_interface *intf = data->isoc;
 856         struct usb_endpoint_descriptor *ep_desc;
 857         int i, err;
 858
 859         if (!data->isoc)
 860                 return -ENODEV;
 861
 862         err = usb_set_interface(data->udev, 1, altsetting);
 863         if (err < 0) {
 864                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
 865                 return err;
 866         }
 867
 868         data->isoc_altsetting = altsetting;
 869
 870         data->isoc_tx_ep = NULL;
 871         data->isoc_rx_ep = NULL;
 872
 873         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 874                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 875
 876                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
 877                         data->isoc_tx_ep = ep_desc;
 878                         continue;
 879                 }
 880
 881                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
 882                         data->isoc_rx_ep = ep_desc;
 883                         continue;
 884                 }
 885         }
 886
 887         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
 888                 BT_ERR("%s invalid SCO descriptors", hdev->name);
 889                 return -ENODEV;
 890         }
 891
 892         return 0;
 893 }
 894
 895 static void btusb_work(struct work_struct *work)
 896 {
 897         struct btusb_data *data = container_of(work, struct btusb_data, work);
 898         struct hci_dev *hdev = data->hdev;
 899         int new_alts;
 900         int err;
 901
 902         if (data->sco_num > 0) {
 903                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
 904                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
 905                         if (err < 0) {
 906                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 907                                 usb_kill_anchored_urbs(&data->isoc_anchor);
 908                                 return;
 909                         }
 910
 911                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
 912                 }
 913
 914                 if (hdev->voice_setting & 0x0020) {
 915                         static const int alts[3] = { 2, 4, 5 };
 916                         new_alts = alts[data->sco_num - 1];
 917                 } else {
 918                         new_alts = data->sco_num;
 919                 }
 920
 921                 if (data->isoc_altsetting != new_alts) {
 922                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 923                         usb_kill_anchored_urbs(&data->isoc_anchor);
 924
 925                         if (__set_isoc_interface(hdev, new_alts) < 0)
 926                                 return;
 927                 }
 928
 929                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
 930                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
 931                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 932                         else
 933                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
 934                 }
 935         } else {
 936                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 937                 usb_kill_anchored_urbs(&data->isoc_anchor);
 938
 939                 __set_isoc_interface(hdev, 0);
 940                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
 941                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
 942         }
 943 }
 944
 945 static void btusb_waker(struct work_struct *work)
 946 {
 947         struct btusb_data *data = container_of(work, struct btusb_data, waker);
 948         int err;
 949
 950         err = usb_autopm_get_interface(data->intf);
 951         if (err < 0)
 952                 return;
 953
 954         usb_autopm_put_interface(data->intf);
 955 }
 956
 957 static int btusb_setup_bcm92035(struct hci_dev *hdev)
 958 {
 959         struct sk_buff *skb;
 960         u8 val = 0x00;
 961
 962         BT_DBG("%s", hdev->name);
 963
 964         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
 965         if (IS_ERR(skb))
 966                 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
 967         else
 968                 kfree_skb(skb);
 969
 970         return 0;
 971 }
 972
 973 static int btusb_setup_csr(struct hci_dev *hdev)
 974 {
 975         struct hci_rp_read_local_version *rp;
 976         struct sk_buff *skb;
 977         int ret;
 978
 979         BT_DBG("%s", hdev->name);
 980
 981         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
 982                              HCI_INIT_TIMEOUT);
 983         if (IS_ERR(skb)) {
 984                 BT_ERR("Reading local version failed (%ld)", -PTR_ERR(skb));
 985                 return -PTR_ERR(skb);
 986         }
 987
 988         rp = (struct hci_rp_read_local_version *) skb->data;
 989
 990         if (!rp->status) {
 991                 if (le16_to_cpu(rp->manufacturer) != 10) {
 992                         /* Clear the reset quirk since this is not an actual
 993                          * early Bluetooth 1.1 device from CSR.
 994                          */
 995                         clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
 996
 997                         /* These fake CSR controllers have all a broken
 998                          * stored link key handling and so just disable it.
 999                          */
1000                         set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY,
1001                                 &hdev->quirks);
1002                 }
1003         }
1004
1005         ret = -bt_to_errno(rp->status);
1006
1007         kfree_skb(skb);
1008
1009         return ret;
1010 }
1011
1012 struct intel_version {
1013         u8 status;
1014         u8 hw_platform;
1015         u8 hw_variant;
1016         u8 hw_revision;
1017         u8 fw_variant;
1018         u8 fw_revision;
1019         u8 fw_build_num;
1020         u8 fw_build_ww;
1021         u8 fw_build_yy;
1022         u8 fw_patch_num;
1023 } __packed;
1024
1025 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1026                                                 struct intel_version *ver)
1027 {
1028         const struct firmware *fw;
1029         char fwname[64];
1030         int ret;
1031
1032         snprintf(fwname, sizeof(fwname),
1033                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1034                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
1035                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1036                  ver->fw_build_ww, ver->fw_build_yy);
1037
1038         ret = request_firmware(&fw, fwname, &hdev->dev);
1039         if (ret < 0) {
1040                 if (ret == -EINVAL) {
1041                         BT_ERR("%s Intel firmware file request failed (%d)",
1042                                hdev->name, ret);
1043                         return NULL;
1044                 }
1045
1046                 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1047                        hdev->name, fwname, ret);
1048
1049                 /* If the correct firmware patch file is not found, use the
1050                  * default firmware patch file instead
1051                  */
1052                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1053                          ver->hw_platform, ver->hw_variant);
1054                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1055                         BT_ERR("%s failed to open default Intel fw file: %s",
1056                                hdev->name, fwname);
1057                         return NULL;
1058                 }
1059         }
1060
1061         BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1062
1063         return fw;
1064 }
1065
1066 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1067                                       const struct firmware *fw,
1068                                       const u8 **fw_ptr, int *disable_patch)
1069 {
1070         struct sk_buff *skb;
1071         struct hci_command_hdr *cmd;
1072         const u8 *cmd_param;
1073         struct hci_event_hdr *evt = NULL;
1074         const u8 *evt_param = NULL;
1075         int remain = fw->size - (*fw_ptr - fw->data);
1076
1077         /* The first byte indicates the types of the patch command or event.
1078          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1079          * in the current firmware buffer doesn't start with 0x01 or
1080          * the size of remain buffer is smaller than HCI command header,
1081          * the firmware file is corrupted and it should stop the patching
1082          * process.
1083          */
1084         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1085                 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1086                 return -EINVAL;
1087         }
1088         (*fw_ptr)++;
1089         remain--;
1090
1091         cmd = (struct hci_command_hdr *)(*fw_ptr);
1092         *fw_ptr += sizeof(*cmd);
1093         remain -= sizeof(*cmd);
1094
1095         /* Ensure that the remain firmware data is long enough than the length
1096          * of command parameter. If not, the firmware file is corrupted.
1097          */
1098         if (remain < cmd->plen) {
1099                 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1100                 return -EFAULT;
1101         }
1102
1103         /* If there is a command that loads a patch in the firmware
1104          * file, then enable the patch upon success, otherwise just
1105          * disable the manufacturer mode, for example patch activation
1106          * is not required when the default firmware patch file is used
1107          * because there are no patch data to load.
1108          */
1109         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1110                 *disable_patch = 0;
1111
1112         cmd_param = *fw_ptr;
1113         *fw_ptr += cmd->plen;
1114         remain -= cmd->plen;
1115
1116         /* This reads the expected events when the above command is sent to the
1117          * device. Some vendor commands expects more than one events, for
1118          * example command status event followed by vendor specific event.
1119          * For this case, it only keeps the last expected event. so the command
1120          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1121          * last expected event.
1122          */
1123         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1124                 (*fw_ptr)++;
1125                 remain--;
1126
1127                 evt = (struct hci_event_hdr *)(*fw_ptr);
1128                 *fw_ptr += sizeof(*evt);
1129                 remain -= sizeof(*evt);
1130
1131                 if (remain < evt->plen) {
1132                         BT_ERR("%s Intel fw corrupted: invalid evt len",
1133                                hdev->name);
1134                         return -EFAULT;
1135                 }
1136
1137                 evt_param = *fw_ptr;
1138                 *fw_ptr += evt->plen;
1139                 remain -= evt->plen;
1140         }
1141
1142         /* Every HCI commands in the firmware file has its correspond event.
1143          * If event is not found or remain is smaller than zero, the firmware
1144          * file is corrupted.
1145          */
1146         if (!evt || !evt_param || remain < 0) {
1147                 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1148                 return -EFAULT;
1149         }
1150
1151         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1152                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1153         if (IS_ERR(skb)) {
1154                 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1155                        hdev->name, cmd->opcode, PTR_ERR(skb));
1156                 return PTR_ERR(skb);
1157         }
1158
1159         /* It ensures that the returned event matches the event data read from
1160          * the firmware file. At fist, it checks the length and then
1161          * the contents of the event.
1162          */
1163         if (skb->len != evt->plen) {
1164                 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1165                        le16_to_cpu(cmd->opcode));
1166                 kfree_skb(skb);
1167                 return -EFAULT;
1168         }
1169
1170         if (memcmp(skb->data, evt_param, evt->plen)) {
1171                 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1172                        hdev->name, le16_to_cpu(cmd->opcode));
1173                 kfree_skb(skb);
1174                 return -EFAULT;
1175         }
1176         kfree_skb(skb);
1177
1178         return 0;
1179 }
1180
1181 static int btusb_setup_intel(struct hci_dev *hdev)
1182 {
1183         struct sk_buff *skb;
1184         const struct firmware *fw;
1185         const u8 *fw_ptr;
1186         int disable_patch;
1187         struct intel_version *ver;
1188
1189         const u8 mfg_enable[] = { 0x01, 0x00 };
1190         const u8 mfg_disable[] = { 0x00, 0x00 };
1191         const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
1192         const u8 mfg_reset_activate[] = { 0x00, 0x02 };
1193
1194         BT_DBG("%s", hdev->name);
1195
1196         /* The controller has a bug with the first HCI command sent to it
1197          * returning number of completed commands as zero. This would stall the
1198          * command processing in the Bluetooth core.
1199          *
1200          * As a workaround, send HCI Reset command first which will reset the
1201          * number of completed commands and allow normal command processing
1202          * from now on.
1203          */
1204         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1205         if (IS_ERR(skb)) {
1206                 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1207                        hdev->name, PTR_ERR(skb));
1208                 return PTR_ERR(skb);
1209         }
1210         kfree_skb(skb);
1211
1212         /* Read Intel specific controller version first to allow selection of
1213          * which firmware file to load.
1214          *
1215          * The returned information are hardware variant and revision plus
1216          * firmware variant, revision and build number.
1217          */
1218         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1219         if (IS_ERR(skb)) {
1220                 BT_ERR("%s reading Intel fw version command failed (%ld)",
1221                        hdev->name, PTR_ERR(skb));
1222                 return PTR_ERR(skb);
1223         }
1224
1225         if (skb->len != sizeof(*ver)) {
1226                 BT_ERR("%s Intel version event length mismatch", hdev->name);
1227                 kfree_skb(skb);
1228                 return -EIO;
1229         }
1230
1231         ver = (struct intel_version *)skb->data;
1232         if (ver->status) {
1233                 BT_ERR("%s Intel fw version event failed (%02x)", hdev->name,
1234                        ver->status);
1235                 kfree_skb(skb);
1236                 return -bt_to_errno(ver->status);
1237         }
1238
1239         BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1240                 hdev->name, ver->hw_platform, ver->hw_variant,
1241                 ver->hw_revision, ver->fw_variant,  ver->fw_revision,
1242                 ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
1243                 ver->fw_patch_num);
1244
1245         /* fw_patch_num indicates the version of patch the device currently
1246          * have. If there is no patch data in the device, it is always 0x00.
1247          * So, if it is other than 0x00, no need to patch the deivce again.
1248          */
1249         if (ver->fw_patch_num) {
1250                 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1251                         hdev->name, ver->fw_patch_num);
1252                 kfree_skb(skb);
1253                 return 0;
1254         }
1255
1256         /* Opens the firmware patch file based on the firmware version read
1257          * from the controller. If it fails to open the matching firmware
1258          * patch file, it tries to open the default firmware patch file.
1259          * If no patch file is found, allow the device to operate without
1260          * a patch.
1261          */
1262         fw = btusb_setup_intel_get_fw(hdev, ver);
1263         if (!fw) {
1264                 kfree_skb(skb);
1265                 return 0;
1266         }
1267         fw_ptr = fw->data;
1268
1269         /* This Intel specific command enables the manufacturer mode of the
1270          * controller.
1271          *
1272          * Only while this mode is enabled, the driver can download the
1273          * firmware patch data and configuration parameters.
1274          */
1275         skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
1276         if (IS_ERR(skb)) {
1277                 BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
1278                        hdev->name, PTR_ERR(skb));
1279                 release_firmware(fw);
1280                 return PTR_ERR(skb);
1281         }
1282
1283         if (skb->data[0]) {
1284                 u8 evt_status = skb->data[0];
1285                 BT_ERR("%s enable Intel manufacturer mode event failed (%02x)",
1286                        hdev->name, evt_status);
1287                 kfree_skb(skb);
1288                 release_firmware(fw);
1289                 return -bt_to_errno(evt_status);
1290         }
1291         kfree_skb(skb);
1292
1293         disable_patch = 1;
1294
1295         /* The firmware data file consists of list of Intel specific HCI
1296          * commands and its expected events. The first byte indicates the
1297          * type of the message, either HCI command or HCI event.
1298          *
1299          * It reads the command and its expected event from the firmware file,
1300          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1301          * the returned event is compared with the event read from the firmware
1302          * file and it will continue until all the messages are downloaded to
1303          * the controller.
1304          *
1305          * Once the firmware patching is completed successfully,
1306          * the manufacturer mode is disabled with reset and activating the
1307          * downloaded patch.
1308          *
1309          * If the firmware patching fails, the manufacturer mode is
1310          * disabled with reset and deactivating the patch.
1311          *
1312          * If the default patch file is used, no reset is done when disabling
1313          * the manufacturer.
1314          */
1315         while (fw->size > fw_ptr - fw->data) {
1316                 int ret;
1317
1318                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1319                                                  &disable_patch);
1320                 if (ret < 0)
1321                         goto exit_mfg_deactivate;
1322         }
1323
1324         release_firmware(fw);
1325
1326         if (disable_patch)
1327                 goto exit_mfg_disable;
1328
1329         /* Patching completed successfully and disable the manufacturer mode
1330          * with reset and activate the downloaded firmware patches.
1331          */
1332         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
1333                              mfg_reset_activate, HCI_INIT_TIMEOUT);
1334         if (IS_ERR(skb)) {
1335                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1336                        hdev->name, PTR_ERR(skb));
1337                 return PTR_ERR(skb);
1338         }
1339         kfree_skb(skb);
1340
1341         BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1342                 hdev->name);
1343
1344         return 0;
1345
1346 exit_mfg_disable:
1347         /* Disable the manufacturer mode without reset */
1348         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
1349                              HCI_INIT_TIMEOUT);
1350         if (IS_ERR(skb)) {
1351                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1352                        hdev->name, PTR_ERR(skb));
1353                 return PTR_ERR(skb);
1354         }
1355         kfree_skb(skb);
1356
1357         BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1358         return 0;
1359
1360 exit_mfg_deactivate:
1361         release_firmware(fw);
1362
1363         /* Patching failed. Disable the manufacturer mode with reset and
1364          * deactivate the downloaded firmware patches.
1365          */
1366         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
1367                              mfg_reset_deactivate, HCI_INIT_TIMEOUT);
1368         if (IS_ERR(skb)) {
1369                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1370                        hdev->name, PTR_ERR(skb));
1371                 return PTR_ERR(skb);
1372         }
1373         kfree_skb(skb);
1374
1375         BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1376                 hdev->name);
1377
1378         return 0;
1379 }
1380
1381 static int btusb_probe(struct usb_interface *intf,
1382                                 const struct usb_device_id *id)
1383 {
1384         struct usb_endpoint_descriptor *ep_desc;
1385         struct btusb_data *data;
1386         struct hci_dev *hdev;
1387         int i, err;
1388
1389         BT_DBG("intf %p id %p", intf, id);
1390
1391         /* interface numbers are hardcoded in the spec */
1392         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
1393                 return -ENODEV;
1394
1395         if (!id->driver_info) {
1396                 const struct usb_device_id *match;
1397                 match = usb_match_id(intf, blacklist_table);
1398                 if (match)
1399                         id = match;
1400         }
1401
1402         if (id->driver_info == BTUSB_IGNORE)
1403                 return -ENODEV;
1404
1405         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
1406                 return -ENODEV;
1407
1408         if (ignore_csr && id->driver_info & BTUSB_CSR)
1409                 return -ENODEV;
1410
1411         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
1412                 return -ENODEV;
1413
1414         if (id->driver_info & BTUSB_ATH3012) {
1415                 struct usb_device *udev = interface_to_usbdev(intf);
1416
1417                 /* Old firmware would otherwise let ath3k driver load
1418                  * patch and sysconfig files */
1419                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
1420                         return -ENODEV;
1421         }
1422
1423         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
1424         if (!data)
1425                 return -ENOMEM;
1426
1427         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1428                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1429
1430                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
1431                         data->intr_ep = ep_desc;
1432                         continue;
1433                 }
1434
1435                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
1436                         data->bulk_tx_ep = ep_desc;
1437                         continue;
1438                 }
1439
1440                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
1441                         data->bulk_rx_ep = ep_desc;
1442                         continue;
1443                 }
1444         }
1445
1446         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
1447                 return -ENODEV;
1448
1449         data->cmdreq_type = USB_TYPE_CLASS;
1450
1451         data->udev = interface_to_usbdev(intf);
1452         data->intf = intf;
1453
1454         spin_lock_init(&data->lock);
1455
1456         INIT_WORK(&data->work, btusb_work);
1457         INIT_WORK(&data->waker, btusb_waker);
1458         spin_lock_init(&data->txlock);
1459
1460         init_usb_anchor(&data->tx_anchor);
1461         init_usb_anchor(&data->intr_anchor);
1462         init_usb_anchor(&data->bulk_anchor);
1463         init_usb_anchor(&data->isoc_anchor);
1464         init_usb_anchor(&data->deferred);
1465
1466         hdev = hci_alloc_dev();
1467         if (!hdev)
1468                 return -ENOMEM;
1469
1470         hdev->bus = HCI_USB;
1471         hci_set_drvdata(hdev, data);
1472
1473         data->hdev = hdev;
1474
1475         SET_HCIDEV_DEV(hdev, &intf->dev);
1476
1477         hdev->open   = btusb_open;
1478         hdev->close  = btusb_close;
1479         hdev->flush  = btusb_flush;
1480         hdev->send   = btusb_send_frame;
1481         hdev->notify = btusb_notify;
1482
1483         if (id->driver_info & BTUSB_BCM92035)
1484                 hdev->setup = btusb_setup_bcm92035;
1485
1486         if (id->driver_info & BTUSB_INTEL) {
1487                 usb_enable_autosuspend(data->udev);
1488                 hdev->setup = btusb_setup_intel;
1489         }
1490
1491         /* Interface numbers are hardcoded in the specification */
1492         data->isoc = usb_ifnum_to_if(data->udev, 1);
1493
1494         if (!reset)
1495                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1496
1497         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1498                 if (!disable_scofix)
1499                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1500         }
1501
1502         if (id->driver_info & BTUSB_BROKEN_ISOC)
1503                 data->isoc = NULL;
1504
1505         if (id->driver_info & BTUSB_DIGIANSWER) {
1506                 data->cmdreq_type = USB_TYPE_VENDOR;
1507                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1508         }
1509
1510         if (id->driver_info & BTUSB_CSR) {
1511                 struct usb_device *udev = data->udev;
1512                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
1513
1514                 /* Old firmware would otherwise execute USB reset */
1515                 if (bcdDevice < 0x117)
1516                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1517
1518                 /* Fake CSR devices with broken commands */
1519                 if (bcdDevice <= 0x100)
1520                         hdev->setup = btusb_setup_csr;
1521         }
1522
1523         if (id->driver_info & BTUSB_SNIFFER) {
1524                 struct usb_device *udev = data->udev;
1525
1526                 /* New sniffer firmware has crippled HCI interface */
1527                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1528                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1529
1530                 data->isoc = NULL;
1531         }
1532
1533         if (data->isoc) {
1534                 err = usb_driver_claim_interface(&btusb_driver,
1535                                                         data->isoc, data);
1536                 if (err < 0) {
1537                         hci_free_dev(hdev);
1538                         return err;
1539                 }
1540         }
1541
1542         err = hci_register_dev(hdev);
1543         if (err < 0) {
1544                 hci_free_dev(hdev);
1545                 return err;
1546         }
1547
1548         usb_set_intfdata(intf, data);
1549
1550         return 0;
1551 }
1552
1553 static void btusb_disconnect(struct usb_interface *intf)
1554 {
1555         struct btusb_data *data = usb_get_intfdata(intf);
1556         struct hci_dev *hdev;
1557
1558         BT_DBG("intf %p", intf);
1559
1560         if (!data)
1561                 return;
1562
1563         hdev = data->hdev;
1564         usb_set_intfdata(data->intf, NULL);
1565
1566         if (data->isoc)
1567                 usb_set_intfdata(data->isoc, NULL);
1568
1569         hci_unregister_dev(hdev);
1570
1571         if (intf == data->isoc)
1572                 usb_driver_release_interface(&btusb_driver, data->intf);
1573         else if (data->isoc)
1574                 usb_driver_release_interface(&btusb_driver, data->isoc);
1575
1576         hci_free_dev(hdev);
1577 }
1578
1579 #ifdef CONFIG_PM
1580 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1581 {
1582         struct btusb_data *data = usb_get_intfdata(intf);
1583
1584         BT_DBG("intf %p", intf);
1585
1586         if (data->suspend_count++)
1587                 return 0;
1588
1589         spin_lock_irq(&data->txlock);
1590         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1591                 set_bit(BTUSB_SUSPENDING, &data->flags);
1592                 spin_unlock_irq(&data->txlock);
1593         } else {
1594                 spin_unlock_irq(&data->txlock);
1595                 data->suspend_count--;
1596                 return -EBUSY;
1597         }
1598
1599         cancel_work_sync(&data->work);
1600
1601         btusb_stop_traffic(data);
1602         usb_kill_anchored_urbs(&data->tx_anchor);
1603
1604         return 0;
1605 }
1606
1607 static void play_deferred(struct btusb_data *data)
1608 {
1609         struct urb *urb;
1610         int err;
1611
1612         while ((urb = usb_get_from_anchor(&data->deferred))) {
1613                 err = usb_submit_urb(urb, GFP_ATOMIC);
1614                 if (err < 0)
1615                         break;
1616
1617                 data->tx_in_flight++;
1618         }
1619         usb_scuttle_anchored_urbs(&data->deferred);
1620 }
1621
1622 static int btusb_resume(struct usb_interface *intf)
1623 {
1624         struct btusb_data *data = usb_get_intfdata(intf);
1625         struct hci_dev *hdev = data->hdev;
1626         int err = 0;
1627
1628         BT_DBG("intf %p", intf);
1629
1630         if (--data->suspend_count)
1631                 return 0;
1632
1633         if (!test_bit(HCI_RUNNING, &hdev->flags))
1634                 goto done;
1635
1636         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1637                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1638                 if (err < 0) {
1639                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1640                         goto failed;
1641                 }
1642         }
1643
1644         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1645                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1646                 if (err < 0) {
1647                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1648                         goto failed;
1649                 }
1650
1651                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1652         }
1653
1654         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1655                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1656                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1657                 else
1658                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1659         }
1660
1661         spin_lock_irq(&data->txlock);
1662         play_deferred(data);
1663         clear_bit(BTUSB_SUSPENDING, &data->flags);
1664         spin_unlock_irq(&data->txlock);
1665         schedule_work(&data->work);
1666
1667         return 0;
1668
1669 failed:
1670         usb_scuttle_anchored_urbs(&data->deferred);
1671 done:
1672         spin_lock_irq(&data->txlock);
1673         clear_bit(BTUSB_SUSPENDING, &data->flags);
1674         spin_unlock_irq(&data->txlock);
1675
1676         return err;
1677 }
1678 #endif
1679
1680 static struct usb_driver btusb_driver = {
1681         .name           = "btusb",
1682         .probe          = btusb_probe,
1683         .disconnect     = btusb_disconnect,
1684 #ifdef CONFIG_PM
1685         .suspend        = btusb_suspend,
1686         .resume         = btusb_resume,
1687 #endif
1688         .id_table       = btusb_table,
1689         .supports_autosuspend = 1,
1690         .disable_hub_initiated_lpm = 1,
1691 };
1692
1693 module_usb_driver(btusb_driver);
1694
1695 module_param(ignore_dga, bool, 0644);
1696 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1697
1698 module_param(ignore_csr, bool, 0644);
1699 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1700
1701 module_param(ignore_sniffer, bool, 0644);
1702 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1703
1704 module_param(disable_scofix, bool, 0644);
1705 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1706
1707 module_param(force_scofix, bool, 0644);
1708 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1709
1710 module_param(reset, bool, 0644);
1711 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1712
1713 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1714 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1715 MODULE_VERSION(VERSION);
1716 MODULE_LICENSE("GPL");