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