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