drivers/bluetooth/btusb.c

   1 /*
   2  *
   3  *  Generic Bluetooth USB driver
   4  *
   5  *  Copyright (C) 2005-2008  Marcel Holtmann <marcel@holtmann.org>
   6  *
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, write to the Free Software
  20  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  *
  22  */
  23
  24 #include <linux/module.h>
  25 #include <linux/usb.h>
  26 #include <linux/firmware.h>
  27
  28 #include <net/bluetooth/bluetooth.h>
  29 #include <net/bluetooth/hci_core.h>
  30
  31 #define VERSION "0.6"
  32
  33 static bool ignore_dga;
  34 static bool ignore_csr;
  35 static bool ignore_sniffer;
  36 static bool disable_scofix;
  37 static bool force_scofix;
  38
  39 static bool reset = 1;
  40
  41 static struct usb_driver btusb_driver;
  42
  43 #define BTUSB_IGNORE            0x01
  44 #define BTUSB_DIGIANSWER        0x02
  45 #define BTUSB_CSR               0x04
  46 #define BTUSB_SNIFFER           0x08
  47 #define BTUSB_BCM92035          0x10
  48 #define BTUSB_BROKEN_ISOC       0x20
  49 #define BTUSB_WRONG_SCO_MTU     0x40
  50 #define BTUSB_ATH3012           0x80
  51 #define BTUSB_INTEL             0x100
  52
  53 static struct usb_device_id btusb_table[] = {
  54         /* Generic Bluetooth USB device */
  55         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  56
  57         /* Apple-specific (Broadcom) devices */
  58         { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01) },
  59
  60         /* MediaTek MT76x0E */
  61         { USB_DEVICE(0x0e8d, 0x763f) },
  62
  63         /* Broadcom SoftSailing reporting vendor specific */
  64         { USB_DEVICE(0x0a5c, 0x21e1) },
  65
  66         /* Apple MacBookPro 7,1 */
  67         { USB_DEVICE(0x05ac, 0x8213) },
  68
  69         /* Apple iMac11,1 */
  70         { USB_DEVICE(0x05ac, 0x8215) },
  71
  72         /* Apple MacBookPro6,2 */
  73         { USB_DEVICE(0x05ac, 0x8218) },
  74
  75         /* Apple MacBookAir3,1, MacBookAir3,2 */
  76         { USB_DEVICE(0x05ac, 0x821b) },
  77
  78         /* Apple MacBookAir4,1 */
  79         { USB_DEVICE(0x05ac, 0x821f) },
  80
  81         /* Apple MacBookPro8,2 */
  82         { USB_DEVICE(0x05ac, 0x821a) },
  83
  84         /* Apple MacMini5,1 */
  85         { USB_DEVICE(0x05ac, 0x8281) },
  86
  87         /* AVM BlueFRITZ! USB v2.0 */
  88         { USB_DEVICE(0x057c, 0x3800) },
  89
  90         /* Bluetooth Ultraport Module from IBM */
  91         { USB_DEVICE(0x04bf, 0x030a) },
  92
  93         /* ALPS Modules with non-standard id */
  94         { USB_DEVICE(0x044e, 0x3001) },
  95         { USB_DEVICE(0x044e, 0x3002) },
  96
  97         /* Ericsson with non-standard id */
  98         { USB_DEVICE(0x0bdb, 0x1002) },
  99
 100         /* Canyon CN-BTU1 with HID interfaces */
 101         { USB_DEVICE(0x0c10, 0x0000) },
 102
 103         /* Broadcom BCM20702A0 */
 104         { USB_DEVICE(0x0b05, 0x17b5) },
 105         { USB_DEVICE(0x0b05, 0x17cb) },
 106         { USB_DEVICE(0x04ca, 0x2003) },
 107         { USB_DEVICE(0x0489, 0xe042) },
 108         { USB_DEVICE(0x413c, 0x8197) },
 109
 110         /* Foxconn - Hon Hai */
 111         { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01) },
 112
 113         /*Broadcom devices with vendor specific id */
 114         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01) },
 115
 116         { }     /* Terminating entry */
 117 };
 118
 119 MODULE_DEVICE_TABLE(usb, btusb_table);
 120
 121 static struct usb_device_id blacklist_table[] = {
 122         /* CSR BlueCore devices */
 123         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 124
 125         /* Broadcom BCM2033 without firmware */
 126         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 127
 128         /* Atheros 3011 with sflash firmware */
 129         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 130         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 131         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 132         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 133         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 134         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 135
 136         /* Atheros AR9285 Malbec with sflash firmware */
 137         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 138
 139         /* Atheros 3012 with sflash firmware */
 140         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 141         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 142         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 143         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 144         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 145         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 146         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 147         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 148         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 149         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 150         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 151         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 152         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 153         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 154         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 155         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 156         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 157         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 158         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 159         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 160         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 161         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 162         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 163
 164         /* Atheros AR5BBU12 with sflash firmware */
 165         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 166
 167         /* Atheros AR5BBU12 with sflash firmware */
 168         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 169         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 170
 171         /* Broadcom BCM2035 */
 172         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 173         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 174         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 175
 176         /* Broadcom BCM2045 */
 177         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 178         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 179
 180         /* IBM/Lenovo ThinkPad with Broadcom chip */
 181         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 182         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 183
 184         /* HP laptop with Broadcom chip */
 185         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 186
 187         /* Dell laptop with Broadcom chip */
 188         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 189
 190         /* Dell Wireless 370 and 410 devices */
 191         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 192         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 193
 194         /* Belkin F8T012 and F8T013 devices */
 195         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 196         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 197
 198         /* Asus WL-BTD202 device */
 199         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 200
 201         /* Kensington Bluetooth USB adapter */
 202         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 203
 204         /* RTX Telecom based adapters with buggy SCO support */
 205         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 206         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 207
 208         /* CONWISE Technology based adapters with buggy SCO support */
 209         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 210
 211         /* Digianswer devices */
 212         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 213         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 214
 215         /* CSR BlueCore Bluetooth Sniffer */
 216         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
 217
 218         /* Frontline ComProbe Bluetooth Sniffer */
 219         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
 220
 221         /* Intel Bluetooth device */
 222         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 223
 224         { }     /* Terminating entry */
 225 };
 226
 227 #define BTUSB_MAX_ISOC_FRAMES   10
 228
 229 #define BTUSB_INTR_RUNNING      0
 230 #define BTUSB_BULK_RUNNING      1
 231 #define BTUSB_ISOC_RUNNING      2
 232 #define BTUSB_SUSPENDING        3
 233 #define BTUSB_DID_ISO_RESUME    4
 234
 235 struct btusb_data {
 236         struct hci_dev       *hdev;
 237         struct usb_device    *udev;
 238         struct usb_interface *intf;
 239         struct usb_interface *isoc;
 240
 241         spinlock_t lock;
 242
 243         unsigned long flags;
 244
 245         struct work_struct work;
 246         struct work_struct waker;
 247
 248         struct usb_anchor tx_anchor;
 249         struct usb_anchor intr_anchor;
 250         struct usb_anchor bulk_anchor;
 251         struct usb_anchor isoc_anchor;
 252         struct usb_anchor deferred;
 253         int tx_in_flight;
 254         spinlock_t txlock;
 255
 256         struct usb_endpoint_descriptor *intr_ep;
 257         struct usb_endpoint_descriptor *bulk_tx_ep;
 258         struct usb_endpoint_descriptor *bulk_rx_ep;
 259         struct usb_endpoint_descriptor *isoc_tx_ep;
 260         struct usb_endpoint_descriptor *isoc_rx_ep;
 261
 262         __u8 cmdreq_type;
 263
 264         unsigned int sco_num;
 265         int isoc_altsetting;
 266         int suspend_count;
 267 };
 268
 269 static int inc_tx(struct btusb_data *data)
 270 {
 271         unsigned long flags;
 272         int rv;
 273
 274         spin_lock_irqsave(&data->txlock, flags);
 275         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
 276         if (!rv)
 277                 data->tx_in_flight++;
 278         spin_unlock_irqrestore(&data->txlock, flags);
 279
 280         return rv;
 281 }
 282
 283 static void btusb_intr_complete(struct urb *urb)
 284 {
 285         struct hci_dev *hdev = urb->context;
 286         struct btusb_data *data = hci_get_drvdata(hdev);
 287         int err;
 288
 289         BT_DBG("%s urb %p status %d count %d", hdev->name,
 290                                         urb, urb->status, urb->actual_length);
 291
 292         if (!test_bit(HCI_RUNNING, &hdev->flags))
 293                 return;
 294
 295         if (urb->status == 0) {
 296                 hdev->stat.byte_rx += urb->actual_length;
 297
 298                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
 299                                                 urb->transfer_buffer,
 300                                                 urb->actual_length) < 0) {
 301                         BT_ERR("%s corrupted event packet", hdev->name);
 302                         hdev->stat.err_rx++;
 303                 }
 304         }
 305
 306         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 307                 return;
 308
 309         usb_mark_last_busy(data->udev);
 310         usb_anchor_urb(urb, &data->intr_anchor);
 311
 312         err = usb_submit_urb(urb, GFP_ATOMIC);
 313         if (err < 0) {
 314                 /* -EPERM: urb is being killed;
 315                  * -ENODEV: device got disconnected */
 316                 if (err != -EPERM && err != -ENODEV)
 317                         BT_ERR("%s urb %p failed to resubmit (%d)",
 318                                                 hdev->name, urb, -err);
 319                 usb_unanchor_urb(urb);
 320         }
 321 }
 322
 323 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 324 {
 325         struct btusb_data *data = hci_get_drvdata(hdev);
 326         struct urb *urb;
 327         unsigned char *buf;
 328         unsigned int pipe;
 329         int err, size;
 330
 331         BT_DBG("%s", hdev->name);
 332
 333         if (!data->intr_ep)
 334                 return -ENODEV;
 335
 336         urb = usb_alloc_urb(0, mem_flags);
 337         if (!urb)
 338                 return -ENOMEM;
 339
 340         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 341
 342         buf = kmalloc(size, mem_flags);
 343         if (!buf) {
 344                 usb_free_urb(urb);
 345                 return -ENOMEM;
 346         }
 347
 348         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 349
 350         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 351                                                 btusb_intr_complete, hdev,
 352                                                 data->intr_ep->bInterval);
 353
 354         urb->transfer_flags |= URB_FREE_BUFFER;
 355
 356         usb_anchor_urb(urb, &data->intr_anchor);
 357
 358         err = usb_submit_urb(urb, mem_flags);
 359         if (err < 0) {
 360                 if (err != -EPERM && err != -ENODEV)
 361                         BT_ERR("%s urb %p submission failed (%d)",
 362                                                 hdev->name, urb, -err);
 363                 usb_unanchor_urb(urb);
 364         }
 365
 366         usb_free_urb(urb);
 367
 368         return err;
 369 }
 370
 371 static void btusb_bulk_complete(struct urb *urb)
 372 {
 373         struct hci_dev *hdev = urb->context;
 374         struct btusb_data *data = hci_get_drvdata(hdev);
 375         int err;
 376
 377         BT_DBG("%s urb %p status %d count %d", hdev->name,
 378                                         urb, urb->status, urb->actual_length);
 379
 380         if (!test_bit(HCI_RUNNING, &hdev->flags))
 381                 return;
 382
 383         if (urb->status == 0) {
 384                 hdev->stat.byte_rx += urb->actual_length;
 385
 386                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
 387                                                 urb->transfer_buffer,
 388                                                 urb->actual_length) < 0) {
 389                         BT_ERR("%s corrupted ACL packet", hdev->name);
 390                         hdev->stat.err_rx++;
 391                 }
 392         }
 393
 394         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 395                 return;
 396
 397         usb_anchor_urb(urb, &data->bulk_anchor);
 398         usb_mark_last_busy(data->udev);
 399
 400         err = usb_submit_urb(urb, GFP_ATOMIC);
 401         if (err < 0) {
 402                 /* -EPERM: urb is being killed;
 403                  * -ENODEV: device got disconnected */
 404                 if (err != -EPERM && err != -ENODEV)
 405                         BT_ERR("%s urb %p failed to resubmit (%d)",
 406                                                 hdev->name, urb, -err);
 407                 usb_unanchor_urb(urb);
 408         }
 409 }
 410
 411 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 412 {
 413         struct btusb_data *data = hci_get_drvdata(hdev);
 414         struct urb *urb;
 415         unsigned char *buf;
 416         unsigned int pipe;
 417         int err, size = HCI_MAX_FRAME_SIZE;
 418
 419         BT_DBG("%s", hdev->name);
 420
 421         if (!data->bulk_rx_ep)
 422                 return -ENODEV;
 423
 424         urb = usb_alloc_urb(0, mem_flags);
 425         if (!urb)
 426                 return -ENOMEM;
 427
 428         buf = kmalloc(size, mem_flags);
 429         if (!buf) {
 430                 usb_free_urb(urb);
 431                 return -ENOMEM;
 432         }
 433
 434         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 435
 436         usb_fill_bulk_urb(urb, data->udev, pipe,
 437                                         buf, size, btusb_bulk_complete, hdev);
 438
 439         urb->transfer_flags |= URB_FREE_BUFFER;
 440
 441         usb_mark_last_busy(data->udev);
 442         usb_anchor_urb(urb, &data->bulk_anchor);
 443
 444         err = usb_submit_urb(urb, mem_flags);
 445         if (err < 0) {
 446                 if (err != -EPERM && err != -ENODEV)
 447                         BT_ERR("%s urb %p submission failed (%d)",
 448                                                 hdev->name, urb, -err);
 449                 usb_unanchor_urb(urb);
 450         }
 451
 452         usb_free_urb(urb);
 453
 454         return err;
 455 }
 456
 457 static void btusb_isoc_complete(struct urb *urb)
 458 {
 459         struct hci_dev *hdev = urb->context;
 460         struct btusb_data *data = hci_get_drvdata(hdev);
 461         int i, err;
 462
 463         BT_DBG("%s urb %p status %d count %d", hdev->name,
 464                                         urb, urb->status, urb->actual_length);
 465
 466         if (!test_bit(HCI_RUNNING, &hdev->flags))
 467                 return;
 468
 469         if (urb->status == 0) {
 470                 for (i = 0; i < urb->number_of_packets; i++) {
 471                         unsigned int offset = urb->iso_frame_desc[i].offset;
 472                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 473
 474                         if (urb->iso_frame_desc[i].status)
 475                                 continue;
 476
 477                         hdev->stat.byte_rx += length;
 478
 479                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
 480                                                 urb->transfer_buffer + offset,
 481                                                                 length) < 0) {
 482                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 483                                 hdev->stat.err_rx++;
 484                         }
 485                 }
 486         }
 487
 488         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 489                 return;
 490
 491         usb_anchor_urb(urb, &data->isoc_anchor);
 492
 493         err = usb_submit_urb(urb, GFP_ATOMIC);
 494         if (err < 0) {
 495                 /* -EPERM: urb is being killed;
 496                  * -ENODEV: device got disconnected */
 497                 if (err != -EPERM && err != -ENODEV)
 498                         BT_ERR("%s urb %p failed to resubmit (%d)",
 499                                                 hdev->name, urb, -err);
 500                 usb_unanchor_urb(urb);
 501         }
 502 }
 503
 504 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 505 {
 506         int i, offset = 0;
 507
 508         BT_DBG("len %d mtu %d", len, mtu);
 509
 510         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 511                                         i++, offset += mtu, len -= mtu) {
 512                 urb->iso_frame_desc[i].offset = offset;
 513                 urb->iso_frame_desc[i].length = mtu;
 514         }
 515
 516         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 517                 urb->iso_frame_desc[i].offset = offset;
 518                 urb->iso_frame_desc[i].length = len;
 519                 i++;
 520         }
 521
 522         urb->number_of_packets = i;
 523 }
 524
 525 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 526 {
 527         struct btusb_data *data = hci_get_drvdata(hdev);
 528         struct urb *urb;
 529         unsigned char *buf;
 530         unsigned int pipe;
 531         int err, size;
 532
 533         BT_DBG("%s", hdev->name);
 534
 535         if (!data->isoc_rx_ep)
 536                 return -ENODEV;
 537
 538         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 539         if (!urb)
 540                 return -ENOMEM;
 541
 542         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 543                                                 BTUSB_MAX_ISOC_FRAMES;
 544
 545         buf = kmalloc(size, mem_flags);
 546         if (!buf) {
 547                 usb_free_urb(urb);
 548                 return -ENOMEM;
 549         }
 550
 551         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 552
 553         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 554                                 hdev, data->isoc_rx_ep->bInterval);
 555
 556         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
 557
 558         __fill_isoc_descriptor(urb, size,
 559                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 560
 561         usb_anchor_urb(urb, &data->isoc_anchor);
 562
 563         err = usb_submit_urb(urb, mem_flags);
 564         if (err < 0) {
 565                 if (err != -EPERM && err != -ENODEV)
 566                         BT_ERR("%s urb %p submission failed (%d)",
 567                                                 hdev->name, urb, -err);
 568                 usb_unanchor_urb(urb);
 569         }
 570
 571         usb_free_urb(urb);
 572
 573         return err;
 574 }
 575
 576 static void btusb_tx_complete(struct urb *urb)
 577 {
 578         struct sk_buff *skb = urb->context;
 579         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 580         struct btusb_data *data = hci_get_drvdata(hdev);
 581
 582         BT_DBG("%s urb %p status %d count %d", hdev->name,
 583                                         urb, urb->status, urb->actual_length);
 584
 585         if (!test_bit(HCI_RUNNING, &hdev->flags))
 586                 goto done;
 587
 588         if (!urb->status)
 589                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 590         else
 591                 hdev->stat.err_tx++;
 592
 593 done:
 594         spin_lock(&data->txlock);
 595         data->tx_in_flight--;
 596         spin_unlock(&data->txlock);
 597
 598         kfree(urb->setup_packet);
 599
 600         kfree_skb(skb);
 601 }
 602
 603 static void btusb_isoc_tx_complete(struct urb *urb)
 604 {
 605         struct sk_buff *skb = urb->context;
 606         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 607
 608         BT_DBG("%s urb %p status %d count %d", hdev->name,
 609                                         urb, urb->status, urb->actual_length);
 610
 611         if (!test_bit(HCI_RUNNING, &hdev->flags))
 612                 goto done;
 613
 614         if (!urb->status)
 615                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 616         else
 617                 hdev->stat.err_tx++;
 618
 619 done:
 620         kfree(urb->setup_packet);
 621
 622         kfree_skb(skb);
 623 }
 624
 625 static int btusb_open(struct hci_dev *hdev)
 626 {
 627         struct btusb_data *data = hci_get_drvdata(hdev);
 628         int err;
 629
 630         BT_DBG("%s", hdev->name);
 631
 632         err = usb_autopm_get_interface(data->intf);
 633         if (err < 0)
 634                 return err;
 635
 636         data->intf->needs_remote_wakeup = 1;
 637
 638         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 639                 goto done;
 640
 641         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 642                 goto done;
 643
 644         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 645         if (err < 0)
 646                 goto failed;
 647
 648         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 649         if (err < 0) {
 650                 usb_kill_anchored_urbs(&data->intr_anchor);
 651                 goto failed;
 652         }
 653
 654         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 655         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 656
 657 done:
 658         usb_autopm_put_interface(data->intf);
 659         return 0;
 660
 661 failed:
 662         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 663         clear_bit(HCI_RUNNING, &hdev->flags);
 664         usb_autopm_put_interface(data->intf);
 665         return err;
 666 }
 667
 668 static void btusb_stop_traffic(struct btusb_data *data)
 669 {
 670         usb_kill_anchored_urbs(&data->intr_anchor);
 671         usb_kill_anchored_urbs(&data->bulk_anchor);
 672         usb_kill_anchored_urbs(&data->isoc_anchor);
 673 }
 674
 675 static int btusb_close(struct hci_dev *hdev)
 676 {
 677         struct btusb_data *data = hci_get_drvdata(hdev);
 678         int err;
 679
 680         BT_DBG("%s", hdev->name);
 681
 682         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 683                 return 0;
 684
 685         cancel_work_sync(&data->work);
 686         cancel_work_sync(&data->waker);
 687
 688         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 689         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 690         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 691
 692         btusb_stop_traffic(data);
 693         err = usb_autopm_get_interface(data->intf);
 694         if (err < 0)
 695                 goto failed;
 696
 697         data->intf->needs_remote_wakeup = 0;
 698         usb_autopm_put_interface(data->intf);
 699
 700 failed:
 701         usb_scuttle_anchored_urbs(&data->deferred);
 702         return 0;
 703 }
 704
 705 static int btusb_flush(struct hci_dev *hdev)
 706 {
 707         struct btusb_data *data = hci_get_drvdata(hdev);
 708
 709         BT_DBG("%s", hdev->name);
 710
 711         usb_kill_anchored_urbs(&data->tx_anchor);
 712
 713         return 0;
 714 }
 715
 716 static int btusb_send_frame(struct sk_buff *skb)
 717 {
 718         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 719         struct btusb_data *data = hci_get_drvdata(hdev);
 720         struct usb_ctrlrequest *dr;
 721         struct urb *urb;
 722         unsigned int pipe;
 723         int err;
 724
 725         BT_DBG("%s", hdev->name);
 726
 727         if (!test_bit(HCI_RUNNING, &hdev->flags))
 728                 return -EBUSY;
 729
 730         switch (bt_cb(skb)->pkt_type) {
 731         case HCI_COMMAND_PKT:
 732                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 733                 if (!urb)
 734                         return -ENOMEM;
 735
 736                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
 737                 if (!dr) {
 738                         usb_free_urb(urb);
 739                         return -ENOMEM;
 740                 }
 741
 742                 dr->bRequestType = data->cmdreq_type;
 743                 dr->bRequest     = 0;
 744                 dr->wIndex       = 0;
 745                 dr->wValue       = 0;
 746                 dr->wLength      = __cpu_to_le16(skb->len);
 747
 748                 pipe = usb_sndctrlpipe(data->udev, 0x00);
 749
 750                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
 751                                 skb->data, skb->len, btusb_tx_complete, skb);
 752
 753                 hdev->stat.cmd_tx++;
 754                 break;
 755
 756         case HCI_ACLDATA_PKT:
 757                 if (!data->bulk_tx_ep)
 758                         return -ENODEV;
 759
 760                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 761                 if (!urb)
 762                         return -ENOMEM;
 763
 764                 pipe = usb_sndbulkpipe(data->udev,
 765                                         data->bulk_tx_ep->bEndpointAddress);
 766
 767                 usb_fill_bulk_urb(urb, data->udev, pipe,
 768                                 skb->data, skb->len, btusb_tx_complete, skb);
 769
 770                 hdev->stat.acl_tx++;
 771                 break;
 772
 773         case HCI_SCODATA_PKT:
 774                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
 775                         return -ENODEV;
 776
 777                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
 778                 if (!urb)
 779                         return -ENOMEM;
 780
 781                 pipe = usb_sndisocpipe(data->udev,
 782                                         data->isoc_tx_ep->bEndpointAddress);
 783
 784                 usb_fill_int_urb(urb, data->udev, pipe,
 785                                 skb->data, skb->len, btusb_isoc_tx_complete,
 786                                 skb, data->isoc_tx_ep->bInterval);
 787
 788                 urb->transfer_flags  = URB_ISO_ASAP;
 789
 790                 __fill_isoc_descriptor(urb, skb->len,
 791                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 792
 793                 hdev->stat.sco_tx++;
 794                 goto skip_waking;
 795
 796         default:
 797                 return -EILSEQ;
 798         }
 799
 800         err = inc_tx(data);
 801         if (err) {
 802                 usb_anchor_urb(urb, &data->deferred);
 803                 schedule_work(&data->waker);
 804                 err = 0;
 805                 goto done;
 806         }
 807
 808 skip_waking:
 809         usb_anchor_urb(urb, &data->tx_anchor);
 810
 811         err = usb_submit_urb(urb, GFP_ATOMIC);
 812         if (err < 0) {
 813                 if (err != -EPERM && err != -ENODEV)
 814                         BT_ERR("%s urb %p submission failed (%d)",
 815                                                 hdev->name, urb, -err);
 816                 kfree(urb->setup_packet);
 817                 usb_unanchor_urb(urb);
 818         } else {
 819                 usb_mark_last_busy(data->udev);
 820         }
 821
 822 done:
 823         usb_free_urb(urb);
 824         return err;
 825 }
 826
 827 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 828 {
 829         struct btusb_data *data = hci_get_drvdata(hdev);
 830
 831         BT_DBG("%s evt %d", hdev->name, evt);
 832
 833         if (hdev->conn_hash.sco_num != data->sco_num) {
 834                 data->sco_num = hdev->conn_hash.sco_num;
 835                 schedule_work(&data->work);
 836         }
 837 }
 838
 839 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
 840 {
 841         struct btusb_data *data = hci_get_drvdata(hdev);
 842         struct usb_interface *intf = data->isoc;
 843         struct usb_endpoint_descriptor *ep_desc;
 844         int i, err;
 845
 846         if (!data->isoc)
 847                 return -ENODEV;
 848
 849         err = usb_set_interface(data->udev, 1, altsetting);
 850         if (err < 0) {
 851                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
 852                 return err;
 853         }
 854
 855         data->isoc_altsetting = altsetting;
 856
 857         data->isoc_tx_ep = NULL;
 858         data->isoc_rx_ep = NULL;
 859
 860         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 861                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 862
 863                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
 864                         data->isoc_tx_ep = ep_desc;
 865                         continue;
 866                 }
 867
 868                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
 869                         data->isoc_rx_ep = ep_desc;
 870                         continue;
 871                 }
 872         }
 873
 874         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
 875                 BT_ERR("%s invalid SCO descriptors", hdev->name);
 876                 return -ENODEV;
 877         }
 878
 879         return 0;
 880 }
 881
 882 static void btusb_work(struct work_struct *work)
 883 {
 884         struct btusb_data *data = container_of(work, struct btusb_data, work);
 885         struct hci_dev *hdev = data->hdev;
 886         int new_alts;
 887         int err;
 888
 889         if (hdev->conn_hash.sco_num > 0) {
 890                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
 891                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
 892                         if (err < 0) {
 893                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 894                                 usb_kill_anchored_urbs(&data->isoc_anchor);
 895                                 return;
 896                         }
 897
 898                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
 899                 }
 900
 901                 if (hdev->voice_setting & 0x0020) {
 902                         static const int alts[3] = { 2, 4, 5 };
 903                         new_alts = alts[hdev->conn_hash.sco_num - 1];
 904                 } else {
 905                         new_alts = hdev->conn_hash.sco_num;
 906                 }
 907
 908                 if (data->isoc_altsetting != new_alts) {
 909                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 910                         usb_kill_anchored_urbs(&data->isoc_anchor);
 911
 912                         if (__set_isoc_interface(hdev, new_alts) < 0)
 913                                 return;
 914                 }
 915
 916                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
 917                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
 918                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 919                         else
 920                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
 921                 }
 922         } else {
 923                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 924                 usb_kill_anchored_urbs(&data->isoc_anchor);
 925
 926                 __set_isoc_interface(hdev, 0);
 927                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
 928                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
 929         }
 930 }
 931
 932 static void btusb_waker(struct work_struct *work)
 933 {
 934         struct btusb_data *data = container_of(work, struct btusb_data, waker);
 935         int err;
 936
 937         err = usb_autopm_get_interface(data->intf);
 938         if (err < 0)
 939                 return;
 940
 941         usb_autopm_put_interface(data->intf);
 942 }
 943
 944 static int btusb_setup_bcm92035(struct hci_dev *hdev)
 945 {
 946         struct sk_buff *skb;
 947         u8 val = 0x00;
 948
 949         BT_DBG("%s", hdev->name);
 950
 951         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
 952         if (IS_ERR(skb))
 953                 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
 954         else
 955                 kfree_skb(skb);
 956
 957         return 0;
 958 }
 959
 960 struct intel_version {
 961         u8 status;
 962         u8 hw_platform;
 963         u8 hw_variant;
 964         u8 hw_revision;
 965         u8 fw_variant;
 966         u8 fw_revision;
 967         u8 fw_build_num;
 968         u8 fw_build_ww;
 969         u8 fw_build_yy;
 970         u8 fw_patch_num;
 971 } __packed;
 972
 973 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
 974                                                 struct intel_version *ver)
 975 {
 976         const struct firmware *fw;
 977         char fwname[64];
 978         int ret;
 979
 980         snprintf(fwname, sizeof(fwname),
 981                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
 982                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
 983                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
 984                  ver->fw_build_ww, ver->fw_build_yy);
 985
 986         ret = request_firmware(&fw, fwname, &hdev->dev);
 987         if (ret < 0) {
 988                 if (ret == -EINVAL) {
 989                         BT_ERR("%s Intel firmware file request failed (%d)",
 990                                hdev->name, ret);
 991                         return NULL;
 992                 }
 993
 994                 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
 995                        hdev->name, fwname, ret);
 996
 997                 /* If the correct firmware patch file is not found, use the
 998                  * default firmware patch file instead
 999                  */
1000                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1001                          ver->hw_platform, ver->hw_variant);
1002                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1003                         BT_ERR("%s failed to open default Intel fw file: %s",
1004                                hdev->name, fwname);
1005                         return NULL;
1006                 }
1007         }
1008
1009         BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1010
1011         return fw;
1012 }
1013
1014 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1015                                       const struct firmware *fw,
1016                                       const u8 **fw_ptr, int *disable_patch)
1017 {
1018         struct sk_buff *skb;
1019         struct hci_command_hdr *cmd;
1020         const u8 *cmd_param;
1021         struct hci_event_hdr *evt = NULL;
1022         const u8 *evt_param = NULL;
1023         int remain = fw->size - (*fw_ptr - fw->data);
1024
1025         /* The first byte indicates the types of the patch command or event.
1026          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1027          * in the current firmware buffer doesn't start with 0x01 or
1028          * the size of remain buffer is smaller than HCI command header,
1029          * the firmware file is corrupted and it should stop the patching
1030          * process.
1031          */
1032         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1033                 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1034                 return -EINVAL;
1035         }
1036         (*fw_ptr)++;
1037         remain--;
1038
1039         cmd = (struct hci_command_hdr *)(*fw_ptr);
1040         *fw_ptr += sizeof(*cmd);
1041         remain -= sizeof(*cmd);
1042
1043         /* Ensure that the remain firmware data is long enough than the length
1044          * of command parameter. If not, the firmware file is corrupted.
1045          */
1046         if (remain < cmd->plen) {
1047                 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1048                 return -EFAULT;
1049         }
1050
1051         /* If there is a command that loads a patch in the firmware
1052          * file, then enable the patch upon success, otherwise just
1053          * disable the manufacturer mode, for example patch activation
1054          * is not required when the default firmware patch file is used
1055          * because there are no patch data to load.
1056          */
1057         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1058                 *disable_patch = 0;
1059
1060         cmd_param = *fw_ptr;
1061         *fw_ptr += cmd->plen;
1062         remain -= cmd->plen;
1063
1064         /* This reads the expected events when the above command is sent to the
1065          * device. Some vendor commands expects more than one events, for
1066          * example command status event followed by vendor specific event.
1067          * For this case, it only keeps the last expected event. so the command
1068          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1069          * last expected event.
1070          */
1071         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1072                 (*fw_ptr)++;
1073                 remain--;
1074
1075                 evt = (struct hci_event_hdr *)(*fw_ptr);
1076                 *fw_ptr += sizeof(*evt);
1077                 remain -= sizeof(*evt);
1078
1079                 if (remain < evt->plen) {
1080                         BT_ERR("%s Intel fw corrupted: invalid evt len",
1081                                hdev->name);
1082                         return -EFAULT;
1083                 }
1084
1085                 evt_param = *fw_ptr;
1086                 *fw_ptr += evt->plen;
1087                 remain -= evt->plen;
1088         }
1089
1090         /* Every HCI commands in the firmware file has its correspond event.
1091          * If event is not found or remain is smaller than zero, the firmware
1092          * file is corrupted.
1093          */
1094         if (!evt || !evt_param || remain < 0) {
1095                 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1096                 return -EFAULT;
1097         }
1098
1099         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1100                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1101         if (IS_ERR(skb)) {
1102                 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1103                        hdev->name, cmd->opcode, PTR_ERR(skb));
1104                 return PTR_ERR(skb);
1105         }
1106
1107         /* It ensures that the returned event matches the event data read from
1108          * the firmware file. At fist, it checks the length and then
1109          * the contents of the event.
1110          */
1111         if (skb->len != evt->plen) {
1112                 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1113                        le16_to_cpu(cmd->opcode));
1114                 kfree_skb(skb);
1115                 return -EFAULT;
1116         }
1117
1118         if (memcmp(skb->data, evt_param, evt->plen)) {
1119                 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1120                        hdev->name, le16_to_cpu(cmd->opcode));
1121                 kfree_skb(skb);
1122                 return -EFAULT;
1123         }
1124         kfree_skb(skb);
1125
1126         return 0;
1127 }
1128
1129 static int btusb_setup_intel(struct hci_dev *hdev)
1130 {
1131         struct sk_buff *skb;
1132         const struct firmware *fw;
1133         const u8 *fw_ptr;
1134         int disable_patch;
1135         struct intel_version *ver;
1136
1137         const u8 mfg_enable[] = { 0x01, 0x00 };
1138         const u8 mfg_disable[] = { 0x00, 0x00 };
1139         const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
1140         const u8 mfg_reset_activate[] = { 0x00, 0x02 };
1141
1142         BT_DBG("%s", hdev->name);
1143
1144         /* The controller has a bug with the first HCI command sent to it
1145          * returning number of completed commands as zero. This would stall the
1146          * command processing in the Bluetooth core.
1147          *
1148          * As a workaround, send HCI Reset command first which will reset the
1149          * number of completed commands and allow normal command processing
1150          * from now on.
1151          */
1152         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1153         if (IS_ERR(skb)) {
1154                 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1155                        hdev->name, PTR_ERR(skb));
1156                 return PTR_ERR(skb);
1157         }
1158         kfree_skb(skb);
1159
1160         /* Read Intel specific controller version first to allow selection of
1161          * which firmware file to load.
1162          *
1163          * The returned information are hardware variant and revision plus
1164          * firmware variant, revision and build number.
1165          */
1166         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1167         if (IS_ERR(skb)) {
1168                 BT_ERR("%s reading Intel fw version command failed (%ld)",
1169                        hdev->name, PTR_ERR(skb));
1170                 return PTR_ERR(skb);
1171         }
1172
1173         if (skb->len != sizeof(*ver)) {
1174                 BT_ERR("%s Intel version event length mismatch", hdev->name);
1175                 kfree_skb(skb);
1176                 return -EIO;
1177         }
1178
1179         ver = (struct intel_version *)skb->data;
1180         if (ver->status) {
1181                 BT_ERR("%s Intel fw version event failed (%02x)", hdev->name,
1182                        ver->status);
1183                 kfree_skb(skb);
1184                 return -bt_to_errno(ver->status);
1185         }
1186
1187         BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1188                 hdev->name, ver->hw_platform, ver->hw_variant,
1189                 ver->hw_revision, ver->fw_variant,  ver->fw_revision,
1190                 ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
1191                 ver->fw_patch_num);
1192
1193         /* fw_patch_num indicates the version of patch the device currently
1194          * have. If there is no patch data in the device, it is always 0x00.
1195          * So, if it is other than 0x00, no need to patch the deivce again.
1196          */
1197         if (ver->fw_patch_num) {
1198                 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1199                         hdev->name, ver->fw_patch_num);
1200                 kfree_skb(skb);
1201                 return 0;
1202         }
1203
1204         /* Opens the firmware patch file based on the firmware version read
1205          * from the controller. If it fails to open the matching firmware
1206          * patch file, it tries to open the default firmware patch file.
1207          * If no patch file is found, allow the device to operate without
1208          * a patch.
1209          */
1210         fw = btusb_setup_intel_get_fw(hdev, ver);
1211         if (!fw) {
1212                 kfree_skb(skb);
1213                 return 0;
1214         }
1215         fw_ptr = fw->data;
1216
1217         /* This Intel specific command enables the manufacturer mode of the
1218          * controller.
1219          *
1220          * Only while this mode is enabled, the driver can download the
1221          * firmware patch data and configuration parameters.
1222          */
1223         skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
1224         if (IS_ERR(skb)) {
1225                 BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
1226                        hdev->name, PTR_ERR(skb));
1227                 release_firmware(fw);
1228                 return PTR_ERR(skb);
1229         }
1230
1231         if (skb->data[0]) {
1232                 u8 evt_status = skb->data[0];
1233                 BT_ERR("%s enable Intel manufacturer mode event failed (%02x)",
1234                        hdev->name, evt_status);
1235                 kfree_skb(skb);
1236                 release_firmware(fw);
1237                 return -bt_to_errno(evt_status);
1238         }
1239         kfree_skb(skb);
1240
1241         disable_patch = 1;
1242
1243         /* The firmware data file consists of list of Intel specific HCI
1244          * commands and its expected events. The first byte indicates the
1245          * type of the message, either HCI command or HCI event.
1246          *
1247          * It reads the command and its expected event from the firmware file,
1248          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1249          * the returned event is compared with the event read from the firmware
1250          * file and it will continue until all the messages are downloaded to
1251          * the controller.
1252          *
1253          * Once the firmware patching is completed successfully,
1254          * the manufacturer mode is disabled with reset and activating the
1255          * downloaded patch.
1256          *
1257          * If the firmware patching fails, the manufacturer mode is
1258          * disabled with reset and deactivating the patch.
1259          *
1260          * If the default patch file is used, no reset is done when disabling
1261          * the manufacturer.
1262          */
1263         while (fw->size > fw_ptr - fw->data) {
1264                 int ret;
1265
1266                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1267                                                  &disable_patch);
1268                 if (ret < 0)
1269                         goto exit_mfg_deactivate;
1270         }
1271
1272         release_firmware(fw);
1273
1274         if (disable_patch)
1275                 goto exit_mfg_disable;
1276
1277         /* Patching completed successfully and disable the manufacturer mode
1278          * with reset and activate the downloaded firmware patches.
1279          */
1280         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
1281                              mfg_reset_activate, HCI_INIT_TIMEOUT);
1282         if (IS_ERR(skb)) {
1283                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1284                        hdev->name, PTR_ERR(skb));
1285                 return PTR_ERR(skb);
1286         }
1287         kfree_skb(skb);
1288
1289         BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1290                 hdev->name);
1291
1292         return 0;
1293
1294 exit_mfg_disable:
1295         /* Disable the manufacturer mode without reset */
1296         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
1297                              HCI_INIT_TIMEOUT);
1298         if (IS_ERR(skb)) {
1299                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1300                        hdev->name, PTR_ERR(skb));
1301                 return PTR_ERR(skb);
1302         }
1303         kfree_skb(skb);
1304
1305         BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1306         return 0;
1307
1308 exit_mfg_deactivate:
1309         release_firmware(fw);
1310
1311         /* Patching failed. Disable the manufacturer mode with reset and
1312          * deactivate the downloaded firmware patches.
1313          */
1314         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
1315                              mfg_reset_deactivate, HCI_INIT_TIMEOUT);
1316         if (IS_ERR(skb)) {
1317                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1318                        hdev->name, PTR_ERR(skb));
1319                 return PTR_ERR(skb);
1320         }
1321         kfree_skb(skb);
1322
1323         BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1324                 hdev->name);
1325
1326         return 0;
1327 }
1328
1329 static int btusb_probe(struct usb_interface *intf,
1330                                 const struct usb_device_id *id)
1331 {
1332         struct usb_endpoint_descriptor *ep_desc;
1333         struct btusb_data *data;
1334         struct hci_dev *hdev;
1335         int i, err;
1336
1337         BT_DBG("intf %p id %p", intf, id);
1338
1339         /* interface numbers are hardcoded in the spec */
1340         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
1341                 return -ENODEV;
1342
1343         if (!id->driver_info) {
1344                 const struct usb_device_id *match;
1345                 match = usb_match_id(intf, blacklist_table);
1346                 if (match)
1347                         id = match;
1348         }
1349
1350         if (id->driver_info == BTUSB_IGNORE)
1351                 return -ENODEV;
1352
1353         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
1354                 return -ENODEV;
1355
1356         if (ignore_csr && id->driver_info & BTUSB_CSR)
1357                 return -ENODEV;
1358
1359         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
1360                 return -ENODEV;
1361
1362         if (id->driver_info & BTUSB_ATH3012) {
1363                 struct usb_device *udev = interface_to_usbdev(intf);
1364
1365                 /* Old firmware would otherwise let ath3k driver load
1366                  * patch and sysconfig files */
1367                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
1368                         return -ENODEV;
1369         }
1370
1371         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
1372         if (!data)
1373                 return -ENOMEM;
1374
1375         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1376                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1377
1378                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
1379                         data->intr_ep = ep_desc;
1380                         continue;
1381                 }
1382
1383                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
1384                         data->bulk_tx_ep = ep_desc;
1385                         continue;
1386                 }
1387
1388                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
1389                         data->bulk_rx_ep = ep_desc;
1390                         continue;
1391                 }
1392         }
1393
1394         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
1395                 return -ENODEV;
1396
1397         data->cmdreq_type = USB_TYPE_CLASS;
1398
1399         data->udev = interface_to_usbdev(intf);
1400         data->intf = intf;
1401
1402         spin_lock_init(&data->lock);
1403
1404         INIT_WORK(&data->work, btusb_work);
1405         INIT_WORK(&data->waker, btusb_waker);
1406         spin_lock_init(&data->txlock);
1407
1408         init_usb_anchor(&data->tx_anchor);
1409         init_usb_anchor(&data->intr_anchor);
1410         init_usb_anchor(&data->bulk_anchor);
1411         init_usb_anchor(&data->isoc_anchor);
1412         init_usb_anchor(&data->deferred);
1413
1414         hdev = hci_alloc_dev();
1415         if (!hdev)
1416                 return -ENOMEM;
1417
1418         hdev->bus = HCI_USB;
1419         hci_set_drvdata(hdev, data);
1420
1421         data->hdev = hdev;
1422
1423         SET_HCIDEV_DEV(hdev, &intf->dev);
1424
1425         hdev->open   = btusb_open;
1426         hdev->close  = btusb_close;
1427         hdev->flush  = btusb_flush;
1428         hdev->send   = btusb_send_frame;
1429         hdev->notify = btusb_notify;
1430
1431         if (id->driver_info & BTUSB_BCM92035)
1432                 hdev->setup = btusb_setup_bcm92035;
1433
1434         if (id->driver_info & BTUSB_INTEL)
1435                 hdev->setup = btusb_setup_intel;
1436
1437         /* Interface numbers are hardcoded in the specification */
1438         data->isoc = usb_ifnum_to_if(data->udev, 1);
1439
1440         if (!reset)
1441                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1442
1443         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1444                 if (!disable_scofix)
1445                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1446         }
1447
1448         if (id->driver_info & BTUSB_BROKEN_ISOC)
1449                 data->isoc = NULL;
1450
1451         if (id->driver_info & BTUSB_DIGIANSWER) {
1452                 data->cmdreq_type = USB_TYPE_VENDOR;
1453                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1454         }
1455
1456         if (id->driver_info & BTUSB_CSR) {
1457                 struct usb_device *udev = data->udev;
1458
1459                 /* Old firmware would otherwise execute USB reset */
1460                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1461                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1462         }
1463
1464         if (id->driver_info & BTUSB_SNIFFER) {
1465                 struct usb_device *udev = data->udev;
1466
1467                 /* New sniffer firmware has crippled HCI interface */
1468                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1469                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1470
1471                 data->isoc = NULL;
1472         }
1473
1474         if (data->isoc) {
1475                 err = usb_driver_claim_interface(&btusb_driver,
1476                                                         data->isoc, data);
1477                 if (err < 0) {
1478                         hci_free_dev(hdev);
1479                         return err;
1480                 }
1481         }
1482
1483         err = hci_register_dev(hdev);
1484         if (err < 0) {
1485                 hci_free_dev(hdev);
1486                 return err;
1487         }
1488
1489         usb_set_intfdata(intf, data);
1490
1491         return 0;
1492 }
1493
1494 static void btusb_disconnect(struct usb_interface *intf)
1495 {
1496         struct btusb_data *data = usb_get_intfdata(intf);
1497         struct hci_dev *hdev;
1498
1499         BT_DBG("intf %p", intf);
1500
1501         if (!data)
1502                 return;
1503
1504         hdev = data->hdev;
1505         usb_set_intfdata(data->intf, NULL);
1506
1507         if (data->isoc)
1508                 usb_set_intfdata(data->isoc, NULL);
1509
1510         hci_unregister_dev(hdev);
1511
1512         if (intf == data->isoc)
1513                 usb_driver_release_interface(&btusb_driver, data->intf);
1514         else if (data->isoc)
1515                 usb_driver_release_interface(&btusb_driver, data->isoc);
1516
1517         hci_free_dev(hdev);
1518 }
1519
1520 #ifdef CONFIG_PM
1521 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1522 {
1523         struct btusb_data *data = usb_get_intfdata(intf);
1524
1525         BT_DBG("intf %p", intf);
1526
1527         if (data->suspend_count++)
1528                 return 0;
1529
1530         spin_lock_irq(&data->txlock);
1531         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1532                 set_bit(BTUSB_SUSPENDING, &data->flags);
1533                 spin_unlock_irq(&data->txlock);
1534         } else {
1535                 spin_unlock_irq(&data->txlock);
1536                 data->suspend_count--;
1537                 return -EBUSY;
1538         }
1539
1540         cancel_work_sync(&data->work);
1541
1542         btusb_stop_traffic(data);
1543         usb_kill_anchored_urbs(&data->tx_anchor);
1544
1545         return 0;
1546 }
1547
1548 static void play_deferred(struct btusb_data *data)
1549 {
1550         struct urb *urb;
1551         int err;
1552
1553         while ((urb = usb_get_from_anchor(&data->deferred))) {
1554                 err = usb_submit_urb(urb, GFP_ATOMIC);
1555                 if (err < 0)
1556                         break;
1557
1558                 data->tx_in_flight++;
1559         }
1560         usb_scuttle_anchored_urbs(&data->deferred);
1561 }
1562
1563 static int btusb_resume(struct usb_interface *intf)
1564 {
1565         struct btusb_data *data = usb_get_intfdata(intf);
1566         struct hci_dev *hdev = data->hdev;
1567         int err = 0;
1568
1569         BT_DBG("intf %p", intf);
1570
1571         if (--data->suspend_count)
1572                 return 0;
1573
1574         if (!test_bit(HCI_RUNNING, &hdev->flags))
1575                 goto done;
1576
1577         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1578                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1579                 if (err < 0) {
1580                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1581                         goto failed;
1582                 }
1583         }
1584
1585         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1586                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1587                 if (err < 0) {
1588                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1589                         goto failed;
1590                 }
1591
1592                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1593         }
1594
1595         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1596                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1597                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1598                 else
1599                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1600         }
1601
1602         spin_lock_irq(&data->txlock);
1603         play_deferred(data);
1604         clear_bit(BTUSB_SUSPENDING, &data->flags);
1605         spin_unlock_irq(&data->txlock);
1606         schedule_work(&data->work);
1607
1608         return 0;
1609
1610 failed:
1611         usb_scuttle_anchored_urbs(&data->deferred);
1612 done:
1613         spin_lock_irq(&data->txlock);
1614         clear_bit(BTUSB_SUSPENDING, &data->flags);
1615         spin_unlock_irq(&data->txlock);
1616
1617         return err;
1618 }
1619 #endif
1620
1621 static struct usb_driver btusb_driver = {
1622         .name           = "btusb",
1623         .probe          = btusb_probe,
1624         .disconnect     = btusb_disconnect,
1625 #ifdef CONFIG_PM
1626         .suspend        = btusb_suspend,
1627         .resume         = btusb_resume,
1628 #endif
1629         .id_table       = btusb_table,
1630         .supports_autosuspend = 1,
1631         .disable_hub_initiated_lpm = 1,
1632 };
1633
1634 module_usb_driver(btusb_driver);
1635
1636 module_param(ignore_dga, bool, 0644);
1637 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1638
1639 module_param(ignore_csr, bool, 0644);
1640 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1641
1642 module_param(ignore_sniffer, bool, 0644);
1643 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1644
1645 module_param(disable_scofix, bool, 0644);
1646 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1647
1648 module_param(force_scofix, bool, 0644);
1649 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1650
1651 module_param(reset, bool, 0644);
1652 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1653
1654 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1655 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1656 MODULE_VERSION(VERSION);
1657 MODULE_LICENSE("GPL");