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 disable_scofix;
  34 static bool force_scofix;
  35
  36 static bool reset = 1;
  37
  38 static struct usb_driver btusb_driver;
  39
  40 #define BTUSB_IGNORE            0x01
  41 #define BTUSB_DIGIANSWER        0x02
  42 #define BTUSB_CSR               0x04
  43 #define BTUSB_SNIFFER           0x08
  44 #define BTUSB_BCM92035          0x10
  45 #define BTUSB_BROKEN_ISOC       0x20
  46 #define BTUSB_WRONG_SCO_MTU     0x40
  47 #define BTUSB_ATH3012           0x80
  48 #define BTUSB_INTEL             0x100
  49 #define BTUSB_INTEL_BOOT        0x200
  50 #define BTUSB_BCM_PATCHRAM      0x400
  51 #define BTUSB_MARVELL           0x800
  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(0x0489, 0xe042) },
 105         { USB_DEVICE(0x04ca, 0x2003) },
 106         { USB_DEVICE(0x0b05, 0x17b5) },
 107         { USB_DEVICE(0x0b05, 0x17cb) },
 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           .driver_info = BTUSB_BCM_PATCHRAM },
 116
 117         /* ASUSTek Computer - Broadcom based */
 118         { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01) },
 119
 120         /* Belkin F8065bf - Broadcom based */
 121         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01) },
 122
 123         /* IMC Networks - Broadcom based */
 124         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01) },
 125
 126         /* Intel Bluetooth USB Bootloader (RAM module) */
 127         { USB_DEVICE(0x8087, 0x0a5a),
 128           .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
 129
 130         { }     /* Terminating entry */
 131 };
 132
 133 MODULE_DEVICE_TABLE(usb, btusb_table);
 134
 135 static const struct usb_device_id blacklist_table[] = {
 136         /* CSR BlueCore devices */
 137         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 138
 139         /* Broadcom BCM2033 without firmware */
 140         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 141
 142         /* Atheros 3011 with sflash firmware */
 143         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 144         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 145         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 146         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 147         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 148         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 149
 150         /* Atheros AR9285 Malbec with sflash firmware */
 151         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 152
 153         /* Atheros 3012 with sflash firmware */
 154         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 155         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 156         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 157         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 158         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 159         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 160         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 161         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 162         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 163         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 164         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 165         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 166         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 167         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 168         { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
 169         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 170         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 171         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 172         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 173         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 174         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
 175         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 176         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 177         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 178         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 179         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 180         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 181         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 182         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 183         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 184         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 185         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
 186
 187         /* Atheros AR5BBU12 with sflash firmware */
 188         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 189
 190         /* Atheros AR5BBU12 with sflash firmware */
 191         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 192         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 193
 194         /* Broadcom BCM2035 */
 195         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 196         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 197         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 198
 199         /* Broadcom BCM2045 */
 200         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 201         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 202
 203         /* IBM/Lenovo ThinkPad with Broadcom chip */
 204         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 205         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 206
 207         /* HP laptop with Broadcom chip */
 208         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 209
 210         /* Dell laptop with Broadcom chip */
 211         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 212
 213         /* Dell Wireless 370 and 410 devices */
 214         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 215         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 216
 217         /* Belkin F8T012 and F8T013 devices */
 218         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 219         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 220
 221         /* Asus WL-BTD202 device */
 222         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 223
 224         /* Kensington Bluetooth USB adapter */
 225         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 226
 227         /* RTX Telecom based adapters with buggy SCO support */
 228         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 229         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 230
 231         /* CONWISE Technology based adapters with buggy SCO support */
 232         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 233
 234         /* Digianswer devices */
 235         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 236         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 237
 238         /* CSR BlueCore Bluetooth Sniffer */
 239         { USB_DEVICE(0x0a12, 0x0002),
 240           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 241
 242         /* Frontline ComProbe Bluetooth Sniffer */
 243         { USB_DEVICE(0x16d3, 0x0002),
 244           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 245
 246         /* Intel Bluetooth device */
 247         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 248         { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
 249
 250         /* Marvell device */
 251         { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
 252         { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
 253
 254         { }     /* Terminating entry */
 255 };
 256
 257 #define BTUSB_MAX_ISOC_FRAMES   10
 258
 259 #define BTUSB_INTR_RUNNING      0
 260 #define BTUSB_BULK_RUNNING      1
 261 #define BTUSB_ISOC_RUNNING      2
 262 #define BTUSB_SUSPENDING        3
 263 #define BTUSB_DID_ISO_RESUME    4
 264
 265 struct btusb_data {
 266         struct hci_dev       *hdev;
 267         struct usb_device    *udev;
 268         struct usb_interface *intf;
 269         struct usb_interface *isoc;
 270
 271         unsigned long flags;
 272
 273         struct work_struct work;
 274         struct work_struct waker;
 275
 276         struct usb_anchor deferred;
 277         struct usb_anchor tx_anchor;
 278         int tx_in_flight;
 279         spinlock_t txlock;
 280
 281         struct usb_anchor intr_anchor;
 282         struct usb_anchor bulk_anchor;
 283         struct usb_anchor isoc_anchor;
 284         spinlock_t rxlock;
 285
 286         struct sk_buff *evt_skb;
 287         struct sk_buff *acl_skb;
 288         struct sk_buff *sco_skb;
 289
 290         struct usb_endpoint_descriptor *intr_ep;
 291         struct usb_endpoint_descriptor *bulk_tx_ep;
 292         struct usb_endpoint_descriptor *bulk_rx_ep;
 293         struct usb_endpoint_descriptor *isoc_tx_ep;
 294         struct usb_endpoint_descriptor *isoc_rx_ep;
 295
 296         __u8 cmdreq_type;
 297
 298         unsigned int sco_num;
 299         int isoc_altsetting;
 300         int suspend_count;
 301 };
 302
 303 static inline void btusb_free_frags(struct btusb_data *data)
 304 {
 305         unsigned long flags;
 306
 307         spin_lock_irqsave(&data->rxlock, flags);
 308
 309         kfree_skb(data->evt_skb);
 310         data->evt_skb = NULL;
 311
 312         kfree_skb(data->acl_skb);
 313         data->acl_skb = NULL;
 314
 315         kfree_skb(data->sco_skb);
 316         data->sco_skb = NULL;
 317
 318         spin_unlock_irqrestore(&data->rxlock, flags);
 319 }
 320
 321 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
 322 {
 323         struct sk_buff *skb;
 324         int err = 0;
 325
 326         spin_lock(&data->rxlock);
 327         skb = data->evt_skb;
 328
 329         while (count) {
 330                 int len;
 331
 332                 if (!skb) {
 333                         skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
 334                         if (!skb) {
 335                                 err = -ENOMEM;
 336                                 break;
 337                         }
 338
 339                         bt_cb(skb)->pkt_type = HCI_EVENT_PKT;
 340                         bt_cb(skb)->expect = HCI_EVENT_HDR_SIZE;
 341                 }
 342
 343                 len = min_t(uint, bt_cb(skb)->expect, count);
 344                 memcpy(skb_put(skb, len), buffer, len);
 345
 346                 count -= len;
 347                 buffer += len;
 348                 bt_cb(skb)->expect -= len;
 349
 350                 if (skb->len == HCI_EVENT_HDR_SIZE) {
 351                         /* Complete event header */
 352                         bt_cb(skb)->expect = hci_event_hdr(skb)->plen;
 353
 354                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 355                                 kfree_skb(skb);
 356                                 skb = NULL;
 357
 358                                 err = -EILSEQ;
 359                                 break;
 360                         }
 361                 }
 362
 363                 if (bt_cb(skb)->expect == 0) {
 364                         /* Complete frame */
 365                         hci_recv_frame(data->hdev, skb);
 366                         skb = NULL;
 367                 }
 368         }
 369
 370         data->evt_skb = skb;
 371         spin_unlock(&data->rxlock);
 372
 373         return err;
 374 }
 375
 376 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
 377 {
 378         struct sk_buff *skb;
 379         int err = 0;
 380
 381         spin_lock(&data->rxlock);
 382         skb = data->acl_skb;
 383
 384         while (count) {
 385                 int len;
 386
 387                 if (!skb) {
 388                         skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
 389                         if (!skb) {
 390                                 err = -ENOMEM;
 391                                 break;
 392                         }
 393
 394                         bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT;
 395                         bt_cb(skb)->expect = HCI_ACL_HDR_SIZE;
 396                 }
 397
 398                 len = min_t(uint, bt_cb(skb)->expect, count);
 399                 memcpy(skb_put(skb, len), buffer, len);
 400
 401                 count -= len;
 402                 buffer += len;
 403                 bt_cb(skb)->expect -= len;
 404
 405                 if (skb->len == HCI_ACL_HDR_SIZE) {
 406                         __le16 dlen = hci_acl_hdr(skb)->dlen;
 407
 408                         /* Complete ACL header */
 409                         bt_cb(skb)->expect = __le16_to_cpu(dlen);
 410
 411                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 412                                 kfree_skb(skb);
 413                                 skb = NULL;
 414
 415                                 err = -EILSEQ;
 416                                 break;
 417                         }
 418                 }
 419
 420                 if (bt_cb(skb)->expect == 0) {
 421                         /* Complete frame */
 422                         hci_recv_frame(data->hdev, skb);
 423                         skb = NULL;
 424                 }
 425         }
 426
 427         data->acl_skb = skb;
 428         spin_unlock(&data->rxlock);
 429
 430         return err;
 431 }
 432
 433 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
 434 {
 435         struct sk_buff *skb;
 436         int err = 0;
 437
 438         spin_lock(&data->rxlock);
 439         skb = data->sco_skb;
 440
 441         while (count) {
 442                 int len;
 443
 444                 if (!skb) {
 445                         skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
 446                         if (!skb) {
 447                                 err = -ENOMEM;
 448                                 break;
 449                         }
 450
 451                         bt_cb(skb)->pkt_type = HCI_SCODATA_PKT;
 452                         bt_cb(skb)->expect = HCI_SCO_HDR_SIZE;
 453                 }
 454
 455                 len = min_t(uint, bt_cb(skb)->expect, count);
 456                 memcpy(skb_put(skb, len), buffer, len);
 457
 458                 count -= len;
 459                 buffer += len;
 460                 bt_cb(skb)->expect -= len;
 461
 462                 if (skb->len == HCI_SCO_HDR_SIZE) {
 463                         /* Complete SCO header */
 464                         bt_cb(skb)->expect = hci_sco_hdr(skb)->dlen;
 465
 466                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 467                                 kfree_skb(skb);
 468                                 skb = NULL;
 469
 470                                 err = -EILSEQ;
 471                                 break;
 472                         }
 473                 }
 474
 475                 if (bt_cb(skb)->expect == 0) {
 476                         /* Complete frame */
 477                         hci_recv_frame(data->hdev, skb);
 478                         skb = NULL;
 479                 }
 480         }
 481
 482         data->sco_skb = skb;
 483         spin_unlock(&data->rxlock);
 484
 485         return err;
 486 }
 487
 488 static void btusb_intr_complete(struct urb *urb)
 489 {
 490         struct hci_dev *hdev = urb->context;
 491         struct btusb_data *data = hci_get_drvdata(hdev);
 492         int err;
 493
 494         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 495                urb->actual_length);
 496
 497         if (!test_bit(HCI_RUNNING, &hdev->flags))
 498                 return;
 499
 500         if (urb->status == 0) {
 501                 hdev->stat.byte_rx += urb->actual_length;
 502
 503                 if (btusb_recv_intr(data, urb->transfer_buffer,
 504                                     urb->actual_length) < 0) {
 505                         BT_ERR("%s corrupted event packet", hdev->name);
 506                         hdev->stat.err_rx++;
 507                 }
 508         } else if (urb->status == -ENOENT) {
 509                 /* Avoid suspend failed when usb_kill_urb */
 510                 return;
 511         }
 512
 513         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 514                 return;
 515
 516         usb_mark_last_busy(data->udev);
 517         usb_anchor_urb(urb, &data->intr_anchor);
 518
 519         err = usb_submit_urb(urb, GFP_ATOMIC);
 520         if (err < 0) {
 521                 /* -EPERM: urb is being killed;
 522                  * -ENODEV: device got disconnected */
 523                 if (err != -EPERM && err != -ENODEV)
 524                         BT_ERR("%s urb %p failed to resubmit (%d)",
 525                                hdev->name, urb, -err);
 526                 usb_unanchor_urb(urb);
 527         }
 528 }
 529
 530 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 531 {
 532         struct btusb_data *data = hci_get_drvdata(hdev);
 533         struct urb *urb;
 534         unsigned char *buf;
 535         unsigned int pipe;
 536         int err, size;
 537
 538         BT_DBG("%s", hdev->name);
 539
 540         if (!data->intr_ep)
 541                 return -ENODEV;
 542
 543         urb = usb_alloc_urb(0, mem_flags);
 544         if (!urb)
 545                 return -ENOMEM;
 546
 547         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 548
 549         buf = kmalloc(size, mem_flags);
 550         if (!buf) {
 551                 usb_free_urb(urb);
 552                 return -ENOMEM;
 553         }
 554
 555         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 556
 557         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 558                          btusb_intr_complete, hdev, data->intr_ep->bInterval);
 559
 560         urb->transfer_flags |= URB_FREE_BUFFER;
 561
 562         usb_anchor_urb(urb, &data->intr_anchor);
 563
 564         err = usb_submit_urb(urb, mem_flags);
 565         if (err < 0) {
 566                 if (err != -EPERM && err != -ENODEV)
 567                         BT_ERR("%s urb %p submission failed (%d)",
 568                                hdev->name, urb, -err);
 569                 usb_unanchor_urb(urb);
 570         }
 571
 572         usb_free_urb(urb);
 573
 574         return err;
 575 }
 576
 577 static void btusb_bulk_complete(struct urb *urb)
 578 {
 579         struct hci_dev *hdev = urb->context;
 580         struct btusb_data *data = hci_get_drvdata(hdev);
 581         int err;
 582
 583         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 584                urb->actual_length);
 585
 586         if (!test_bit(HCI_RUNNING, &hdev->flags))
 587                 return;
 588
 589         if (urb->status == 0) {
 590                 hdev->stat.byte_rx += urb->actual_length;
 591
 592                 if (btusb_recv_bulk(data, urb->transfer_buffer,
 593                                     urb->actual_length) < 0) {
 594                         BT_ERR("%s corrupted ACL packet", hdev->name);
 595                         hdev->stat.err_rx++;
 596                 }
 597         } else if (urb->status == -ENOENT) {
 598                 /* Avoid suspend failed when usb_kill_urb */
 599                 return;
 600         }
 601
 602         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 603                 return;
 604
 605         usb_anchor_urb(urb, &data->bulk_anchor);
 606         usb_mark_last_busy(data->udev);
 607
 608         err = usb_submit_urb(urb, GFP_ATOMIC);
 609         if (err < 0) {
 610                 /* -EPERM: urb is being killed;
 611                  * -ENODEV: device got disconnected */
 612                 if (err != -EPERM && err != -ENODEV)
 613                         BT_ERR("%s urb %p failed to resubmit (%d)",
 614                                hdev->name, urb, -err);
 615                 usb_unanchor_urb(urb);
 616         }
 617 }
 618
 619 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 620 {
 621         struct btusb_data *data = hci_get_drvdata(hdev);
 622         struct urb *urb;
 623         unsigned char *buf;
 624         unsigned int pipe;
 625         int err, size = HCI_MAX_FRAME_SIZE;
 626
 627         BT_DBG("%s", hdev->name);
 628
 629         if (!data->bulk_rx_ep)
 630                 return -ENODEV;
 631
 632         urb = usb_alloc_urb(0, mem_flags);
 633         if (!urb)
 634                 return -ENOMEM;
 635
 636         buf = kmalloc(size, mem_flags);
 637         if (!buf) {
 638                 usb_free_urb(urb);
 639                 return -ENOMEM;
 640         }
 641
 642         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 643
 644         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
 645                           btusb_bulk_complete, hdev);
 646
 647         urb->transfer_flags |= URB_FREE_BUFFER;
 648
 649         usb_mark_last_busy(data->udev);
 650         usb_anchor_urb(urb, &data->bulk_anchor);
 651
 652         err = usb_submit_urb(urb, mem_flags);
 653         if (err < 0) {
 654                 if (err != -EPERM && err != -ENODEV)
 655                         BT_ERR("%s urb %p submission failed (%d)",
 656                                hdev->name, urb, -err);
 657                 usb_unanchor_urb(urb);
 658         }
 659
 660         usb_free_urb(urb);
 661
 662         return err;
 663 }
 664
 665 static void btusb_isoc_complete(struct urb *urb)
 666 {
 667         struct hci_dev *hdev = urb->context;
 668         struct btusb_data *data = hci_get_drvdata(hdev);
 669         int i, err;
 670
 671         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 672                urb->actual_length);
 673
 674         if (!test_bit(HCI_RUNNING, &hdev->flags))
 675                 return;
 676
 677         if (urb->status == 0) {
 678                 for (i = 0; i < urb->number_of_packets; i++) {
 679                         unsigned int offset = urb->iso_frame_desc[i].offset;
 680                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 681
 682                         if (urb->iso_frame_desc[i].status)
 683                                 continue;
 684
 685                         hdev->stat.byte_rx += length;
 686
 687                         if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
 688                                             length) < 0) {
 689                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 690                                 hdev->stat.err_rx++;
 691                         }
 692                 }
 693         } else if (urb->status == -ENOENT) {
 694                 /* Avoid suspend failed when usb_kill_urb */
 695                 return;
 696         }
 697
 698         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 699                 return;
 700
 701         usb_anchor_urb(urb, &data->isoc_anchor);
 702
 703         err = usb_submit_urb(urb, GFP_ATOMIC);
 704         if (err < 0) {
 705                 /* -EPERM: urb is being killed;
 706                  * -ENODEV: device got disconnected */
 707                 if (err != -EPERM && err != -ENODEV)
 708                         BT_ERR("%s urb %p failed to resubmit (%d)",
 709                                hdev->name, urb, -err);
 710                 usb_unanchor_urb(urb);
 711         }
 712 }
 713
 714 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 715 {
 716         int i, offset = 0;
 717
 718         BT_DBG("len %d mtu %d", len, mtu);
 719
 720         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 721                                         i++, offset += mtu, len -= mtu) {
 722                 urb->iso_frame_desc[i].offset = offset;
 723                 urb->iso_frame_desc[i].length = mtu;
 724         }
 725
 726         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 727                 urb->iso_frame_desc[i].offset = offset;
 728                 urb->iso_frame_desc[i].length = len;
 729                 i++;
 730         }
 731
 732         urb->number_of_packets = i;
 733 }
 734
 735 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 736 {
 737         struct btusb_data *data = hci_get_drvdata(hdev);
 738         struct urb *urb;
 739         unsigned char *buf;
 740         unsigned int pipe;
 741         int err, size;
 742
 743         BT_DBG("%s", hdev->name);
 744
 745         if (!data->isoc_rx_ep)
 746                 return -ENODEV;
 747
 748         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 749         if (!urb)
 750                 return -ENOMEM;
 751
 752         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 753                                                 BTUSB_MAX_ISOC_FRAMES;
 754
 755         buf = kmalloc(size, mem_flags);
 756         if (!buf) {
 757                 usb_free_urb(urb);
 758                 return -ENOMEM;
 759         }
 760
 761         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 762
 763         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 764                          hdev, data->isoc_rx_ep->bInterval);
 765
 766         urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
 767
 768         __fill_isoc_descriptor(urb, size,
 769                                le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 770
 771         usb_anchor_urb(urb, &data->isoc_anchor);
 772
 773         err = usb_submit_urb(urb, mem_flags);
 774         if (err < 0) {
 775                 if (err != -EPERM && err != -ENODEV)
 776                         BT_ERR("%s urb %p submission failed (%d)",
 777                                hdev->name, urb, -err);
 778                 usb_unanchor_urb(urb);
 779         }
 780
 781         usb_free_urb(urb);
 782
 783         return err;
 784 }
 785
 786 static void btusb_tx_complete(struct urb *urb)
 787 {
 788         struct sk_buff *skb = urb->context;
 789         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
 790         struct btusb_data *data = hci_get_drvdata(hdev);
 791
 792         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 793                urb->actual_length);
 794
 795         if (!test_bit(HCI_RUNNING, &hdev->flags))
 796                 goto done;
 797
 798         if (!urb->status)
 799                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 800         else
 801                 hdev->stat.err_tx++;
 802
 803 done:
 804         spin_lock(&data->txlock);
 805         data->tx_in_flight--;
 806         spin_unlock(&data->txlock);
 807
 808         kfree(urb->setup_packet);
 809
 810         kfree_skb(skb);
 811 }
 812
 813 static void btusb_isoc_tx_complete(struct urb *urb)
 814 {
 815         struct sk_buff *skb = urb->context;
 816         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
 817
 818         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 819                urb->actual_length);
 820
 821         if (!test_bit(HCI_RUNNING, &hdev->flags))
 822                 goto done;
 823
 824         if (!urb->status)
 825                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 826         else
 827                 hdev->stat.err_tx++;
 828
 829 done:
 830         kfree(urb->setup_packet);
 831
 832         kfree_skb(skb);
 833 }
 834
 835 static int btusb_open(struct hci_dev *hdev)
 836 {
 837         struct btusb_data *data = hci_get_drvdata(hdev);
 838         int err;
 839
 840         BT_DBG("%s", hdev->name);
 841
 842         err = usb_autopm_get_interface(data->intf);
 843         if (err < 0)
 844                 return err;
 845
 846         data->intf->needs_remote_wakeup = 1;
 847
 848         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 849                 goto done;
 850
 851         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 852                 goto done;
 853
 854         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 855         if (err < 0)
 856                 goto failed;
 857
 858         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 859         if (err < 0) {
 860                 usb_kill_anchored_urbs(&data->intr_anchor);
 861                 goto failed;
 862         }
 863
 864         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 865         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 866
 867 done:
 868         usb_autopm_put_interface(data->intf);
 869         return 0;
 870
 871 failed:
 872         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 873         clear_bit(HCI_RUNNING, &hdev->flags);
 874         usb_autopm_put_interface(data->intf);
 875         return err;
 876 }
 877
 878 static void btusb_stop_traffic(struct btusb_data *data)
 879 {
 880         usb_kill_anchored_urbs(&data->intr_anchor);
 881         usb_kill_anchored_urbs(&data->bulk_anchor);
 882         usb_kill_anchored_urbs(&data->isoc_anchor);
 883 }
 884
 885 static int btusb_close(struct hci_dev *hdev)
 886 {
 887         struct btusb_data *data = hci_get_drvdata(hdev);
 888         int err;
 889
 890         BT_DBG("%s", hdev->name);
 891
 892         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 893                 return 0;
 894
 895         cancel_work_sync(&data->work);
 896         cancel_work_sync(&data->waker);
 897
 898         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 899         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 900         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 901
 902         btusb_stop_traffic(data);
 903         btusb_free_frags(data);
 904
 905         err = usb_autopm_get_interface(data->intf);
 906         if (err < 0)
 907                 goto failed;
 908
 909         data->intf->needs_remote_wakeup = 0;
 910         usb_autopm_put_interface(data->intf);
 911
 912 failed:
 913         usb_scuttle_anchored_urbs(&data->deferred);
 914         return 0;
 915 }
 916
 917 static int btusb_flush(struct hci_dev *hdev)
 918 {
 919         struct btusb_data *data = hci_get_drvdata(hdev);
 920
 921         BT_DBG("%s", hdev->name);
 922
 923         usb_kill_anchored_urbs(&data->tx_anchor);
 924         btusb_free_frags(data);
 925
 926         return 0;
 927 }
 928
 929 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
 930 {
 931         struct btusb_data *data = hci_get_drvdata(hdev);
 932         struct usb_ctrlrequest *dr;
 933         struct urb *urb;
 934         unsigned int pipe;
 935
 936         urb = usb_alloc_urb(0, GFP_KERNEL);
 937         if (!urb)
 938                 return ERR_PTR(-ENOMEM);
 939
 940         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
 941         if (!dr) {
 942                 usb_free_urb(urb);
 943                 return ERR_PTR(-ENOMEM);
 944         }
 945
 946         dr->bRequestType = data->cmdreq_type;
 947         dr->bRequest     = 0;
 948         dr->wIndex       = 0;
 949         dr->wValue       = 0;
 950         dr->wLength      = __cpu_to_le16(skb->len);
 951
 952         pipe = usb_sndctrlpipe(data->udev, 0x00);
 953
 954         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
 955                              skb->data, skb->len, btusb_tx_complete, skb);
 956
 957         skb->dev = (void *)hdev;
 958
 959         return urb;
 960 }
 961
 962 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
 963 {
 964         struct btusb_data *data = hci_get_drvdata(hdev);
 965         struct urb *urb;
 966         unsigned int pipe;
 967
 968         if (!data->bulk_tx_ep)
 969                 return ERR_PTR(-ENODEV);
 970
 971         urb = usb_alloc_urb(0, GFP_KERNEL);
 972         if (!urb)
 973                 return ERR_PTR(-ENOMEM);
 974
 975         pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
 976
 977         usb_fill_bulk_urb(urb, data->udev, pipe,
 978                           skb->data, skb->len, btusb_tx_complete, skb);
 979
 980         skb->dev = (void *)hdev;
 981
 982         return urb;
 983 }
 984
 985 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
 986 {
 987         struct btusb_data *data = hci_get_drvdata(hdev);
 988         struct urb *urb;
 989         unsigned int pipe;
 990
 991         if (!data->isoc_tx_ep)
 992                 return ERR_PTR(-ENODEV);
 993
 994         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
 995         if (!urb)
 996                 return ERR_PTR(-ENOMEM);
 997
 998         pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
 999
1000         usb_fill_int_urb(urb, data->udev, pipe,
1001                          skb->data, skb->len, btusb_isoc_tx_complete,
1002                          skb, data->isoc_tx_ep->bInterval);
1003
1004         urb->transfer_flags  = URB_ISO_ASAP;
1005
1006         __fill_isoc_descriptor(urb, skb->len,
1007                                le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1008
1009         skb->dev = (void *)hdev;
1010
1011         return urb;
1012 }
1013
1014 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1015 {
1016         struct btusb_data *data = hci_get_drvdata(hdev);
1017         int err;
1018
1019         usb_anchor_urb(urb, &data->tx_anchor);
1020
1021         err = usb_submit_urb(urb, GFP_KERNEL);
1022         if (err < 0) {
1023                 if (err != -EPERM && err != -ENODEV)
1024                         BT_ERR("%s urb %p submission failed (%d)",
1025                                hdev->name, urb, -err);
1026                 kfree(urb->setup_packet);
1027                 usb_unanchor_urb(urb);
1028         } else {
1029                 usb_mark_last_busy(data->udev);
1030         }
1031
1032         usb_free_urb(urb);
1033         return err;
1034 }
1035
1036 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1037 {
1038         struct btusb_data *data = hci_get_drvdata(hdev);
1039         unsigned long flags;
1040         bool suspending;
1041
1042         spin_lock_irqsave(&data->txlock, flags);
1043         suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1044         if (!suspending)
1045                 data->tx_in_flight++;
1046         spin_unlock_irqrestore(&data->txlock, flags);
1047
1048         if (!suspending)
1049                 return submit_tx_urb(hdev, urb);
1050
1051         usb_anchor_urb(urb, &data->deferred);
1052         schedule_work(&data->waker);
1053
1054         usb_free_urb(urb);
1055         return 0;
1056 }
1057
1058 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1059 {
1060         struct urb *urb;
1061
1062         BT_DBG("%s", hdev->name);
1063
1064         if (!test_bit(HCI_RUNNING, &hdev->flags))
1065                 return -EBUSY;
1066
1067         switch (bt_cb(skb)->pkt_type) {
1068         case HCI_COMMAND_PKT:
1069                 urb = alloc_ctrl_urb(hdev, skb);
1070                 if (IS_ERR(urb))
1071                         return PTR_ERR(urb);
1072
1073                 hdev->stat.cmd_tx++;
1074                 return submit_or_queue_tx_urb(hdev, urb);
1075
1076         case HCI_ACLDATA_PKT:
1077                 urb = alloc_bulk_urb(hdev, skb);
1078                 if (IS_ERR(urb))
1079                         return PTR_ERR(urb);
1080
1081                 hdev->stat.acl_tx++;
1082                 return submit_or_queue_tx_urb(hdev, urb);
1083
1084         case HCI_SCODATA_PKT:
1085                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1086                         return -ENODEV;
1087
1088                 urb = alloc_isoc_urb(hdev, skb);
1089                 if (IS_ERR(urb))
1090                         return PTR_ERR(urb);
1091
1092                 hdev->stat.sco_tx++;
1093                 return submit_tx_urb(hdev, urb);
1094         }
1095
1096         return -EILSEQ;
1097 }
1098
1099 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1100 {
1101         struct btusb_data *data = hci_get_drvdata(hdev);
1102
1103         BT_DBG("%s evt %d", hdev->name, evt);
1104
1105         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1106                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1107                 schedule_work(&data->work);
1108         }
1109 }
1110
1111 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1112 {
1113         struct btusb_data *data = hci_get_drvdata(hdev);
1114         struct usb_interface *intf = data->isoc;
1115         struct usb_endpoint_descriptor *ep_desc;
1116         int i, err;
1117
1118         if (!data->isoc)
1119                 return -ENODEV;
1120
1121         err = usb_set_interface(data->udev, 1, altsetting);
1122         if (err < 0) {
1123                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
1124                 return err;
1125         }
1126
1127         data->isoc_altsetting = altsetting;
1128
1129         data->isoc_tx_ep = NULL;
1130         data->isoc_rx_ep = NULL;
1131
1132         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1133                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1134
1135                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1136                         data->isoc_tx_ep = ep_desc;
1137                         continue;
1138                 }
1139
1140                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1141                         data->isoc_rx_ep = ep_desc;
1142                         continue;
1143                 }
1144         }
1145
1146         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1147                 BT_ERR("%s invalid SCO descriptors", hdev->name);
1148                 return -ENODEV;
1149         }
1150
1151         return 0;
1152 }
1153
1154 static void btusb_work(struct work_struct *work)
1155 {
1156         struct btusb_data *data = container_of(work, struct btusb_data, work);
1157         struct hci_dev *hdev = data->hdev;
1158         int new_alts;
1159         int err;
1160
1161         if (data->sco_num > 0) {
1162                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1163                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1164                         if (err < 0) {
1165                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1166                                 usb_kill_anchored_urbs(&data->isoc_anchor);
1167                                 return;
1168                         }
1169
1170                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1171                 }
1172
1173                 if (hdev->voice_setting & 0x0020) {
1174                         static const int alts[3] = { 2, 4, 5 };
1175
1176                         new_alts = alts[data->sco_num - 1];
1177                 } else {
1178                         new_alts = data->sco_num;
1179                 }
1180
1181                 if (data->isoc_altsetting != new_alts) {
1182                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1183                         usb_kill_anchored_urbs(&data->isoc_anchor);
1184
1185                         if (__set_isoc_interface(hdev, new_alts) < 0)
1186                                 return;
1187                 }
1188
1189                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1190                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1191                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1192                         else
1193                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1194                 }
1195         } else {
1196                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1197                 usb_kill_anchored_urbs(&data->isoc_anchor);
1198
1199                 __set_isoc_interface(hdev, 0);
1200                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1201                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1202         }
1203 }
1204
1205 static void btusb_waker(struct work_struct *work)
1206 {
1207         struct btusb_data *data = container_of(work, struct btusb_data, waker);
1208         int err;
1209
1210         err = usb_autopm_get_interface(data->intf);
1211         if (err < 0)
1212                 return;
1213
1214         usb_autopm_put_interface(data->intf);
1215 }
1216
1217 static int btusb_setup_bcm92035(struct hci_dev *hdev)
1218 {
1219         struct sk_buff *skb;
1220         u8 val = 0x00;
1221
1222         BT_DBG("%s", hdev->name);
1223
1224         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1225         if (IS_ERR(skb))
1226                 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
1227         else
1228                 kfree_skb(skb);
1229
1230         return 0;
1231 }
1232
1233 static int btusb_setup_csr(struct hci_dev *hdev)
1234 {
1235         struct hci_rp_read_local_version *rp;
1236         struct sk_buff *skb;
1237         int ret;
1238
1239         BT_DBG("%s", hdev->name);
1240
1241         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1242                              HCI_INIT_TIMEOUT);
1243         if (IS_ERR(skb)) {
1244                 BT_ERR("Reading local version failed (%ld)", -PTR_ERR(skb));
1245                 return -PTR_ERR(skb);
1246         }
1247
1248         rp = (struct hci_rp_read_local_version *)skb->data;
1249
1250         if (!rp->status) {
1251                 if (le16_to_cpu(rp->manufacturer) != 10) {
1252                         /* Clear the reset quirk since this is not an actual
1253                          * early Bluetooth 1.1 device from CSR.
1254                          */
1255                         clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1256
1257                         /* These fake CSR controllers have all a broken
1258                          * stored link key handling and so just disable it.
1259                          */
1260                         set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY,
1261                                 &hdev->quirks);
1262                 }
1263         }
1264
1265         ret = -bt_to_errno(rp->status);
1266
1267         kfree_skb(skb);
1268
1269         return ret;
1270 }
1271
1272 struct intel_version {
1273         u8 status;
1274         u8 hw_platform;
1275         u8 hw_variant;
1276         u8 hw_revision;
1277         u8 fw_variant;
1278         u8 fw_revision;
1279         u8 fw_build_num;
1280         u8 fw_build_ww;
1281         u8 fw_build_yy;
1282         u8 fw_patch_num;
1283 } __packed;
1284
1285 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1286                                                        struct intel_version *ver)
1287 {
1288         const struct firmware *fw;
1289         char fwname[64];
1290         int ret;
1291
1292         snprintf(fwname, sizeof(fwname),
1293                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1294                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
1295                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1296                  ver->fw_build_ww, ver->fw_build_yy);
1297
1298         ret = request_firmware(&fw, fwname, &hdev->dev);
1299         if (ret < 0) {
1300                 if (ret == -EINVAL) {
1301                         BT_ERR("%s Intel firmware file request failed (%d)",
1302                                hdev->name, ret);
1303                         return NULL;
1304                 }
1305
1306                 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1307                        hdev->name, fwname, ret);
1308
1309                 /* If the correct firmware patch file is not found, use the
1310                  * default firmware patch file instead
1311                  */
1312                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1313                          ver->hw_platform, ver->hw_variant);
1314                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1315                         BT_ERR("%s failed to open default Intel fw file: %s",
1316                                hdev->name, fwname);
1317                         return NULL;
1318                 }
1319         }
1320
1321         BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1322
1323         return fw;
1324 }
1325
1326 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1327                                       const struct firmware *fw,
1328                                       const u8 **fw_ptr, int *disable_patch)
1329 {
1330         struct sk_buff *skb;
1331         struct hci_command_hdr *cmd;
1332         const u8 *cmd_param;
1333         struct hci_event_hdr *evt = NULL;
1334         const u8 *evt_param = NULL;
1335         int remain = fw->size - (*fw_ptr - fw->data);
1336
1337         /* The first byte indicates the types of the patch command or event.
1338          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1339          * in the current firmware buffer doesn't start with 0x01 or
1340          * the size of remain buffer is smaller than HCI command header,
1341          * the firmware file is corrupted and it should stop the patching
1342          * process.
1343          */
1344         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1345                 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1346                 return -EINVAL;
1347         }
1348         (*fw_ptr)++;
1349         remain--;
1350
1351         cmd = (struct hci_command_hdr *)(*fw_ptr);
1352         *fw_ptr += sizeof(*cmd);
1353         remain -= sizeof(*cmd);
1354
1355         /* Ensure that the remain firmware data is long enough than the length
1356          * of command parameter. If not, the firmware file is corrupted.
1357          */
1358         if (remain < cmd->plen) {
1359                 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1360                 return -EFAULT;
1361         }
1362
1363         /* If there is a command that loads a patch in the firmware
1364          * file, then enable the patch upon success, otherwise just
1365          * disable the manufacturer mode, for example patch activation
1366          * is not required when the default firmware patch file is used
1367          * because there are no patch data to load.
1368          */
1369         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1370                 *disable_patch = 0;
1371
1372         cmd_param = *fw_ptr;
1373         *fw_ptr += cmd->plen;
1374         remain -= cmd->plen;
1375
1376         /* This reads the expected events when the above command is sent to the
1377          * device. Some vendor commands expects more than one events, for
1378          * example command status event followed by vendor specific event.
1379          * For this case, it only keeps the last expected event. so the command
1380          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1381          * last expected event.
1382          */
1383         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1384                 (*fw_ptr)++;
1385                 remain--;
1386
1387                 evt = (struct hci_event_hdr *)(*fw_ptr);
1388                 *fw_ptr += sizeof(*evt);
1389                 remain -= sizeof(*evt);
1390
1391                 if (remain < evt->plen) {
1392                         BT_ERR("%s Intel fw corrupted: invalid evt len",
1393                                hdev->name);
1394                         return -EFAULT;
1395                 }
1396
1397                 evt_param = *fw_ptr;
1398                 *fw_ptr += evt->plen;
1399                 remain -= evt->plen;
1400         }
1401
1402         /* Every HCI commands in the firmware file has its correspond event.
1403          * If event is not found or remain is smaller than zero, the firmware
1404          * file is corrupted.
1405          */
1406         if (!evt || !evt_param || remain < 0) {
1407                 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1408                 return -EFAULT;
1409         }
1410
1411         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1412                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1413         if (IS_ERR(skb)) {
1414                 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1415                        hdev->name, cmd->opcode, PTR_ERR(skb));
1416                 return PTR_ERR(skb);
1417         }
1418
1419         /* It ensures that the returned event matches the event data read from
1420          * the firmware file. At fist, it checks the length and then
1421          * the contents of the event.
1422          */
1423         if (skb->len != evt->plen) {
1424                 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1425                        le16_to_cpu(cmd->opcode));
1426                 kfree_skb(skb);
1427                 return -EFAULT;
1428         }
1429
1430         if (memcmp(skb->data, evt_param, evt->plen)) {
1431                 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1432                        hdev->name, le16_to_cpu(cmd->opcode));
1433                 kfree_skb(skb);
1434                 return -EFAULT;
1435         }
1436         kfree_skb(skb);
1437
1438         return 0;
1439 }
1440
1441 #define BDADDR_INTEL (&(bdaddr_t) {{0x00, 0x8b, 0x9e, 0x19, 0x03, 0x00}})
1442
1443 static int btusb_check_bdaddr_intel(struct hci_dev *hdev)
1444 {
1445         struct sk_buff *skb;
1446         struct hci_rp_read_bd_addr *rp;
1447
1448         skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
1449                              HCI_INIT_TIMEOUT);
1450         if (IS_ERR(skb)) {
1451                 BT_ERR("%s reading Intel device address failed (%ld)",
1452                        hdev->name, PTR_ERR(skb));
1453                 return PTR_ERR(skb);
1454         }
1455
1456         if (skb->len != sizeof(*rp)) {
1457                 BT_ERR("%s Intel device address length mismatch", hdev->name);
1458                 kfree_skb(skb);
1459                 return -EIO;
1460         }
1461
1462         rp = (struct hci_rp_read_bd_addr *)skb->data;
1463         if (rp->status) {
1464                 BT_ERR("%s Intel device address result failed (%02x)",
1465                        hdev->name, rp->status);
1466                 kfree_skb(skb);
1467                 return -bt_to_errno(rp->status);
1468         }
1469
1470         /* For some Intel based controllers, the default Bluetooth device
1471          * address 00:03:19:9E:8B:00 can be found. These controllers are
1472          * fully operational, but have the danger of duplicate addresses
1473          * and that in turn can cause problems with Bluetooth operation.
1474          */
1475         if (!bacmp(&rp->bdaddr, BDADDR_INTEL)) {
1476                 BT_ERR("%s found Intel default device address (%pMR)",
1477                        hdev->name, &rp->bdaddr);
1478                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
1479         }
1480
1481         kfree_skb(skb);
1482
1483         return 0;
1484 }
1485
1486 static int btusb_setup_intel(struct hci_dev *hdev)
1487 {
1488         struct sk_buff *skb;
1489         const struct firmware *fw;
1490         const u8 *fw_ptr;
1491         int disable_patch;
1492         struct intel_version *ver;
1493
1494         const u8 mfg_enable[] = { 0x01, 0x00 };
1495         const u8 mfg_disable[] = { 0x00, 0x00 };
1496         const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
1497         const u8 mfg_reset_activate[] = { 0x00, 0x02 };
1498
1499         BT_DBG("%s", hdev->name);
1500
1501         /* The controller has a bug with the first HCI command sent to it
1502          * returning number of completed commands as zero. This would stall the
1503          * command processing in the Bluetooth core.
1504          *
1505          * As a workaround, send HCI Reset command first which will reset the
1506          * number of completed commands and allow normal command processing
1507          * from now on.
1508          */
1509         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1510         if (IS_ERR(skb)) {
1511                 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1512                        hdev->name, PTR_ERR(skb));
1513                 return PTR_ERR(skb);
1514         }
1515         kfree_skb(skb);
1516
1517         /* Read Intel specific controller version first to allow selection of
1518          * which firmware file to load.
1519          *
1520          * The returned information are hardware variant and revision plus
1521          * firmware variant, revision and build number.
1522          */
1523         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1524         if (IS_ERR(skb)) {
1525                 BT_ERR("%s reading Intel fw version command failed (%ld)",
1526                        hdev->name, PTR_ERR(skb));
1527                 return PTR_ERR(skb);
1528         }
1529
1530         if (skb->len != sizeof(*ver)) {
1531                 BT_ERR("%s Intel version event length mismatch", hdev->name);
1532                 kfree_skb(skb);
1533                 return -EIO;
1534         }
1535
1536         ver = (struct intel_version *)skb->data;
1537         if (ver->status) {
1538                 BT_ERR("%s Intel fw version event failed (%02x)", hdev->name,
1539                        ver->status);
1540                 kfree_skb(skb);
1541                 return -bt_to_errno(ver->status);
1542         }
1543
1544         BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1545                 hdev->name, ver->hw_platform, ver->hw_variant,
1546                 ver->hw_revision, ver->fw_variant,  ver->fw_revision,
1547                 ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
1548                 ver->fw_patch_num);
1549
1550         /* fw_patch_num indicates the version of patch the device currently
1551          * have. If there is no patch data in the device, it is always 0x00.
1552          * So, if it is other than 0x00, no need to patch the deivce again.
1553          */
1554         if (ver->fw_patch_num) {
1555                 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1556                         hdev->name, ver->fw_patch_num);
1557                 kfree_skb(skb);
1558                 btusb_check_bdaddr_intel(hdev);
1559                 return 0;
1560         }
1561
1562         /* Opens the firmware patch file based on the firmware version read
1563          * from the controller. If it fails to open the matching firmware
1564          * patch file, it tries to open the default firmware patch file.
1565          * If no patch file is found, allow the device to operate without
1566          * a patch.
1567          */
1568         fw = btusb_setup_intel_get_fw(hdev, ver);
1569         if (!fw) {
1570                 kfree_skb(skb);
1571                 btusb_check_bdaddr_intel(hdev);
1572                 return 0;
1573         }
1574         fw_ptr = fw->data;
1575
1576         /* This Intel specific command enables the manufacturer mode of the
1577          * controller.
1578          *
1579          * Only while this mode is enabled, the driver can download the
1580          * firmware patch data and configuration parameters.
1581          */
1582         skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
1583         if (IS_ERR(skb)) {
1584                 BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
1585                        hdev->name, PTR_ERR(skb));
1586                 release_firmware(fw);
1587                 return PTR_ERR(skb);
1588         }
1589
1590         if (skb->data[0]) {
1591                 u8 evt_status = skb->data[0];
1592
1593                 BT_ERR("%s enable Intel manufacturer mode event failed (%02x)",
1594                        hdev->name, evt_status);
1595                 kfree_skb(skb);
1596                 release_firmware(fw);
1597                 return -bt_to_errno(evt_status);
1598         }
1599         kfree_skb(skb);
1600
1601         disable_patch = 1;
1602
1603         /* The firmware data file consists of list of Intel specific HCI
1604          * commands and its expected events. The first byte indicates the
1605          * type of the message, either HCI command or HCI event.
1606          *
1607          * It reads the command and its expected event from the firmware file,
1608          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1609          * the returned event is compared with the event read from the firmware
1610          * file and it will continue until all the messages are downloaded to
1611          * the controller.
1612          *
1613          * Once the firmware patching is completed successfully,
1614          * the manufacturer mode is disabled with reset and activating the
1615          * downloaded patch.
1616          *
1617          * If the firmware patching fails, the manufacturer mode is
1618          * disabled with reset and deactivating the patch.
1619          *
1620          * If the default patch file is used, no reset is done when disabling
1621          * the manufacturer.
1622          */
1623         while (fw->size > fw_ptr - fw->data) {
1624                 int ret;
1625
1626                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1627                                                  &disable_patch);
1628                 if (ret < 0)
1629                         goto exit_mfg_deactivate;
1630         }
1631
1632         release_firmware(fw);
1633
1634         if (disable_patch)
1635                 goto exit_mfg_disable;
1636
1637         /* Patching completed successfully and disable the manufacturer mode
1638          * with reset and activate the downloaded firmware patches.
1639          */
1640         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
1641                              mfg_reset_activate, HCI_INIT_TIMEOUT);
1642         if (IS_ERR(skb)) {
1643                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1644                        hdev->name, PTR_ERR(skb));
1645                 return PTR_ERR(skb);
1646         }
1647         kfree_skb(skb);
1648
1649         BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1650                 hdev->name);
1651
1652         btusb_check_bdaddr_intel(hdev);
1653         return 0;
1654
1655 exit_mfg_disable:
1656         /* Disable the manufacturer mode without reset */
1657         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
1658                              HCI_INIT_TIMEOUT);
1659         if (IS_ERR(skb)) {
1660                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1661                        hdev->name, PTR_ERR(skb));
1662                 return PTR_ERR(skb);
1663         }
1664         kfree_skb(skb);
1665
1666         BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1667
1668         btusb_check_bdaddr_intel(hdev);
1669         return 0;
1670
1671 exit_mfg_deactivate:
1672         release_firmware(fw);
1673
1674         /* Patching failed. Disable the manufacturer mode with reset and
1675          * deactivate the downloaded firmware patches.
1676          */
1677         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
1678                              mfg_reset_deactivate, HCI_INIT_TIMEOUT);
1679         if (IS_ERR(skb)) {
1680                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1681                        hdev->name, PTR_ERR(skb));
1682                 return PTR_ERR(skb);
1683         }
1684         kfree_skb(skb);
1685
1686         BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1687                 hdev->name);
1688
1689         btusb_check_bdaddr_intel(hdev);
1690         return 0;
1691 }
1692
1693 static int btusb_set_bdaddr_intel(struct hci_dev *hdev, const bdaddr_t *bdaddr)
1694 {
1695         struct sk_buff *skb;
1696         long ret;
1697
1698         skb = __hci_cmd_sync(hdev, 0xfc31, 6, bdaddr, HCI_INIT_TIMEOUT);
1699         if (IS_ERR(skb)) {
1700                 ret = PTR_ERR(skb);
1701                 BT_ERR("%s: changing Intel device address failed (%ld)",
1702                        hdev->name, ret);
1703                 return ret;
1704         }
1705         kfree_skb(skb);
1706
1707         return 0;
1708 }
1709
1710 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
1711                                     const bdaddr_t *bdaddr)
1712 {
1713         struct sk_buff *skb;
1714         u8 buf[8];
1715         long ret;
1716
1717         buf[0] = 0xfe;
1718         buf[1] = sizeof(bdaddr_t);
1719         memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
1720
1721         skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
1722         if (IS_ERR(skb)) {
1723                 ret = PTR_ERR(skb);
1724                 BT_ERR("%s: changing Marvell device address failed (%ld)",
1725                        hdev->name, ret);
1726                 return ret;
1727         }
1728         kfree_skb(skb);
1729
1730         return 0;
1731 }
1732
1733 #define BDADDR_BCM20702A0 (&(bdaddr_t) {{0x00, 0xa0, 0x02, 0x70, 0x20, 0x00}})
1734
1735 static int btusb_setup_bcm_patchram(struct hci_dev *hdev)
1736 {
1737         struct btusb_data *data = hci_get_drvdata(hdev);
1738         struct usb_device *udev = data->udev;
1739         char fw_name[64];
1740         const struct firmware *fw;
1741         const u8 *fw_ptr;
1742         size_t fw_size;
1743         const struct hci_command_hdr *cmd;
1744         const u8 *cmd_param;
1745         u16 opcode;
1746         struct sk_buff *skb;
1747         struct hci_rp_read_local_version *ver;
1748         struct hci_rp_read_bd_addr *bda;
1749         long ret;
1750
1751         snprintf(fw_name, sizeof(fw_name), "brcm/%s-%04x-%04x.hcd",
1752                  udev->product ? udev->product : "BCM",
1753                  le16_to_cpu(udev->descriptor.idVendor),
1754                  le16_to_cpu(udev->descriptor.idProduct));
1755
1756         ret = request_firmware(&fw, fw_name, &hdev->dev);
1757         if (ret < 0) {
1758                 BT_INFO("%s: BCM: patch %s not found", hdev->name, fw_name);
1759                 return 0;
1760         }
1761
1762         /* Reset */
1763         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1764         if (IS_ERR(skb)) {
1765                 ret = PTR_ERR(skb);
1766                 BT_ERR("%s: HCI_OP_RESET failed (%ld)", hdev->name, ret);
1767                 goto done;
1768         }
1769         kfree_skb(skb);
1770
1771         /* Read Local Version Info */
1772         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1773                              HCI_INIT_TIMEOUT);
1774         if (IS_ERR(skb)) {
1775                 ret = PTR_ERR(skb);
1776                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION failed (%ld)",
1777                        hdev->name, ret);
1778                 goto done;
1779         }
1780
1781         if (skb->len != sizeof(*ver)) {
1782                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION event length mismatch",
1783                        hdev->name);
1784                 kfree_skb(skb);
1785                 ret = -EIO;
1786                 goto done;
1787         }
1788
1789         ver = (struct hci_rp_read_local_version *)skb->data;
1790         BT_INFO("%s: BCM: patching hci_ver=%02x hci_rev=%04x lmp_ver=%02x "
1791                 "lmp_subver=%04x", hdev->name, ver->hci_ver, ver->hci_rev,
1792                 ver->lmp_ver, ver->lmp_subver);
1793         kfree_skb(skb);
1794
1795         /* Start Download */
1796         skb = __hci_cmd_sync(hdev, 0xfc2e, 0, NULL, HCI_INIT_TIMEOUT);
1797         if (IS_ERR(skb)) {
1798                 ret = PTR_ERR(skb);
1799                 BT_ERR("%s: BCM: Download Minidrv command failed (%ld)",
1800                        hdev->name, ret);
1801                 goto reset_fw;
1802         }
1803         kfree_skb(skb);
1804
1805         /* 50 msec delay after Download Minidrv completes */
1806         msleep(50);
1807
1808         fw_ptr = fw->data;
1809         fw_size = fw->size;
1810
1811         while (fw_size >= sizeof(*cmd)) {
1812                 cmd = (struct hci_command_hdr *)fw_ptr;
1813                 fw_ptr += sizeof(*cmd);
1814                 fw_size -= sizeof(*cmd);
1815
1816                 if (fw_size < cmd->plen) {
1817                         BT_ERR("%s: BCM: patch %s is corrupted",
1818                                hdev->name, fw_name);
1819                         ret = -EINVAL;
1820                         goto reset_fw;
1821                 }
1822
1823                 cmd_param = fw_ptr;
1824                 fw_ptr += cmd->plen;
1825                 fw_size -= cmd->plen;
1826
1827                 opcode = le16_to_cpu(cmd->opcode);
1828
1829                 skb = __hci_cmd_sync(hdev, opcode, cmd->plen, cmd_param,
1830                                      HCI_INIT_TIMEOUT);
1831                 if (IS_ERR(skb)) {
1832                         ret = PTR_ERR(skb);
1833                         BT_ERR("%s: BCM: patch command %04x failed (%ld)",
1834                                hdev->name, opcode, ret);
1835                         goto reset_fw;
1836                 }
1837                 kfree_skb(skb);
1838         }
1839
1840         /* 250 msec delay after Launch Ram completes */
1841         msleep(250);
1842
1843 reset_fw:
1844         /* Reset */
1845         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1846         if (IS_ERR(skb)) {
1847                 ret = PTR_ERR(skb);
1848                 BT_ERR("%s: HCI_OP_RESET failed (%ld)", hdev->name, ret);
1849                 goto done;
1850         }
1851         kfree_skb(skb);
1852
1853         /* Read Local Version Info */
1854         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1855                              HCI_INIT_TIMEOUT);
1856         if (IS_ERR(skb)) {
1857                 ret = PTR_ERR(skb);
1858                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION failed (%ld)",
1859                        hdev->name, ret);
1860                 goto done;
1861         }
1862
1863         if (skb->len != sizeof(*ver)) {
1864                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION event length mismatch",
1865                        hdev->name);
1866                 kfree_skb(skb);
1867                 ret = -EIO;
1868                 goto done;
1869         }
1870
1871         ver = (struct hci_rp_read_local_version *)skb->data;
1872         BT_INFO("%s: BCM: firmware hci_ver=%02x hci_rev=%04x lmp_ver=%02x "
1873                 "lmp_subver=%04x", hdev->name, ver->hci_ver, ver->hci_rev,
1874                 ver->lmp_ver, ver->lmp_subver);
1875         kfree_skb(skb);
1876
1877         /* Read BD Address */
1878         skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
1879                              HCI_INIT_TIMEOUT);
1880         if (IS_ERR(skb)) {
1881                 ret = PTR_ERR(skb);
1882                 BT_ERR("%s: HCI_OP_READ_BD_ADDR failed (%ld)",
1883                        hdev->name, ret);
1884                 goto done;
1885         }
1886
1887         if (skb->len != sizeof(*bda)) {
1888                 BT_ERR("%s: HCI_OP_READ_BD_ADDR event length mismatch",
1889                        hdev->name);
1890                 kfree_skb(skb);
1891                 ret = -EIO;
1892                 goto done;
1893         }
1894
1895         bda = (struct hci_rp_read_bd_addr *)skb->data;
1896         if (bda->status) {
1897                 BT_ERR("%s: HCI_OP_READ_BD_ADDR error status (%02x)",
1898                        hdev->name, bda->status);
1899                 kfree_skb(skb);
1900                 ret = -bt_to_errno(bda->status);
1901                 goto done;
1902         }
1903
1904         /* The address 00:20:70:02:A0:00 indicates a BCM20702A0 controller
1905          * with no configured address.
1906          */
1907         if (!bacmp(&bda->bdaddr, BDADDR_BCM20702A0)) {
1908                 BT_INFO("%s: BCM: using default device address (%pMR)",
1909                         hdev->name, &bda->bdaddr);
1910                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
1911         }
1912
1913         kfree_skb(skb);
1914
1915 done:
1916         release_firmware(fw);
1917
1918         return ret;
1919 }
1920
1921 static int btusb_set_bdaddr_bcm(struct hci_dev *hdev, const bdaddr_t *bdaddr)
1922 {
1923         struct sk_buff *skb;
1924         long ret;
1925
1926         skb = __hci_cmd_sync(hdev, 0xfc01, 6, bdaddr, HCI_INIT_TIMEOUT);
1927         if (IS_ERR(skb)) {
1928                 ret = PTR_ERR(skb);
1929                 BT_ERR("%s: BCM: Change address command failed (%ld)",
1930                        hdev->name, ret);
1931                 return ret;
1932         }
1933         kfree_skb(skb);
1934
1935         return 0;
1936 }
1937
1938 static int btusb_probe(struct usb_interface *intf,
1939                        const struct usb_device_id *id)
1940 {
1941         struct usb_endpoint_descriptor *ep_desc;
1942         struct btusb_data *data;
1943         struct hci_dev *hdev;
1944         int i, err;
1945
1946         BT_DBG("intf %p id %p", intf, id);
1947
1948         /* interface numbers are hardcoded in the spec */
1949         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
1950                 return -ENODEV;
1951
1952         if (!id->driver_info) {
1953                 const struct usb_device_id *match;
1954
1955                 match = usb_match_id(intf, blacklist_table);
1956                 if (match)
1957                         id = match;
1958         }
1959
1960         if (id->driver_info == BTUSB_IGNORE)
1961                 return -ENODEV;
1962
1963         if (id->driver_info & BTUSB_ATH3012) {
1964                 struct usb_device *udev = interface_to_usbdev(intf);
1965
1966                 /* Old firmware would otherwise let ath3k driver load
1967                  * patch and sysconfig files */
1968                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
1969                         return -ENODEV;
1970         }
1971
1972         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
1973         if (!data)
1974                 return -ENOMEM;
1975
1976         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1977                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1978
1979                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
1980                         data->intr_ep = ep_desc;
1981                         continue;
1982                 }
1983
1984                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
1985                         data->bulk_tx_ep = ep_desc;
1986                         continue;
1987                 }
1988
1989                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
1990                         data->bulk_rx_ep = ep_desc;
1991                         continue;
1992                 }
1993         }
1994
1995         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
1996                 return -ENODEV;
1997
1998         data->cmdreq_type = USB_TYPE_CLASS;
1999
2000         data->udev = interface_to_usbdev(intf);
2001         data->intf = intf;
2002
2003         INIT_WORK(&data->work, btusb_work);
2004         INIT_WORK(&data->waker, btusb_waker);
2005         init_usb_anchor(&data->deferred);
2006         init_usb_anchor(&data->tx_anchor);
2007         spin_lock_init(&data->txlock);
2008
2009         init_usb_anchor(&data->intr_anchor);
2010         init_usb_anchor(&data->bulk_anchor);
2011         init_usb_anchor(&data->isoc_anchor);
2012         spin_lock_init(&data->rxlock);
2013
2014         hdev = hci_alloc_dev();
2015         if (!hdev)
2016                 return -ENOMEM;
2017
2018         hdev->bus = HCI_USB;
2019         hci_set_drvdata(hdev, data);
2020
2021         data->hdev = hdev;
2022
2023         SET_HCIDEV_DEV(hdev, &intf->dev);
2024
2025         hdev->open   = btusb_open;
2026         hdev->close  = btusb_close;
2027         hdev->flush  = btusb_flush;
2028         hdev->send   = btusb_send_frame;
2029         hdev->notify = btusb_notify;
2030
2031         if (id->driver_info & BTUSB_BCM92035)
2032                 hdev->setup = btusb_setup_bcm92035;
2033
2034         if (id->driver_info & BTUSB_BCM_PATCHRAM) {
2035                 hdev->setup = btusb_setup_bcm_patchram;
2036                 hdev->set_bdaddr = btusb_set_bdaddr_bcm;
2037         }
2038
2039         if (id->driver_info & BTUSB_INTEL) {
2040                 hdev->setup = btusb_setup_intel;
2041                 hdev->set_bdaddr = btusb_set_bdaddr_intel;
2042         }
2043
2044         if (id->driver_info & BTUSB_MARVELL)
2045                 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
2046
2047         if (id->driver_info & BTUSB_INTEL_BOOT)
2048                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
2049
2050         /* Interface numbers are hardcoded in the specification */
2051         data->isoc = usb_ifnum_to_if(data->udev, 1);
2052
2053         if (!reset)
2054                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2055
2056         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
2057                 if (!disable_scofix)
2058                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
2059         }
2060
2061         if (id->driver_info & BTUSB_BROKEN_ISOC)
2062                 data->isoc = NULL;
2063
2064         if (id->driver_info & BTUSB_DIGIANSWER) {
2065                 data->cmdreq_type = USB_TYPE_VENDOR;
2066                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2067         }
2068
2069         if (id->driver_info & BTUSB_CSR) {
2070                 struct usb_device *udev = data->udev;
2071                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
2072
2073                 /* Old firmware would otherwise execute USB reset */
2074                 if (bcdDevice < 0x117)
2075                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2076
2077                 /* Fake CSR devices with broken commands */
2078                 if (bcdDevice <= 0x100)
2079                         hdev->setup = btusb_setup_csr;
2080         }
2081
2082         if (id->driver_info & BTUSB_SNIFFER) {
2083                 struct usb_device *udev = data->udev;
2084
2085                 /* New sniffer firmware has crippled HCI interface */
2086                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
2087                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
2088         }
2089
2090         if (id->driver_info & BTUSB_INTEL_BOOT) {
2091                 /* A bug in the bootloader causes that interrupt interface is
2092                  * only enabled after receiving SetInterface(0, AltSetting=0).
2093                  */
2094                 err = usb_set_interface(data->udev, 0, 0);
2095                 if (err < 0) {
2096                         BT_ERR("failed to set interface 0, alt 0 %d", err);
2097                         hci_free_dev(hdev);
2098                         return err;
2099                 }
2100         }
2101
2102         if (data->isoc) {
2103                 err = usb_driver_claim_interface(&btusb_driver,
2104                                                  data->isoc, data);
2105                 if (err < 0) {
2106                         hci_free_dev(hdev);
2107                         return err;
2108                 }
2109         }
2110
2111         err = hci_register_dev(hdev);
2112         if (err < 0) {
2113                 hci_free_dev(hdev);
2114                 return err;
2115         }
2116
2117         usb_set_intfdata(intf, data);
2118
2119         return 0;
2120 }
2121
2122 static void btusb_disconnect(struct usb_interface *intf)
2123 {
2124         struct btusb_data *data = usb_get_intfdata(intf);
2125         struct hci_dev *hdev;
2126
2127         BT_DBG("intf %p", intf);
2128
2129         if (!data)
2130                 return;
2131
2132         hdev = data->hdev;
2133         usb_set_intfdata(data->intf, NULL);
2134
2135         if (data->isoc)
2136                 usb_set_intfdata(data->isoc, NULL);
2137
2138         hci_unregister_dev(hdev);
2139
2140         if (intf == data->isoc)
2141                 usb_driver_release_interface(&btusb_driver, data->intf);
2142         else if (data->isoc)
2143                 usb_driver_release_interface(&btusb_driver, data->isoc);
2144
2145         btusb_free_frags(data);
2146         hci_free_dev(hdev);
2147 }
2148
2149 #ifdef CONFIG_PM
2150 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
2151 {
2152         struct btusb_data *data = usb_get_intfdata(intf);
2153
2154         BT_DBG("intf %p", intf);
2155
2156         if (data->suspend_count++)
2157                 return 0;
2158
2159         spin_lock_irq(&data->txlock);
2160         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
2161                 set_bit(BTUSB_SUSPENDING, &data->flags);
2162                 spin_unlock_irq(&data->txlock);
2163         } else {
2164                 spin_unlock_irq(&data->txlock);
2165                 data->suspend_count--;
2166                 return -EBUSY;
2167         }
2168
2169         cancel_work_sync(&data->work);
2170
2171         btusb_stop_traffic(data);
2172         usb_kill_anchored_urbs(&data->tx_anchor);
2173
2174         return 0;
2175 }
2176
2177 static void play_deferred(struct btusb_data *data)
2178 {
2179         struct urb *urb;
2180         int err;
2181
2182         while ((urb = usb_get_from_anchor(&data->deferred))) {
2183                 err = usb_submit_urb(urb, GFP_ATOMIC);
2184                 if (err < 0)
2185                         break;
2186
2187                 data->tx_in_flight++;
2188         }
2189         usb_scuttle_anchored_urbs(&data->deferred);
2190 }
2191
2192 static int btusb_resume(struct usb_interface *intf)
2193 {
2194         struct btusb_data *data = usb_get_intfdata(intf);
2195         struct hci_dev *hdev = data->hdev;
2196         int err = 0;
2197
2198         BT_DBG("intf %p", intf);
2199
2200         if (--data->suspend_count)
2201                 return 0;
2202
2203         if (!test_bit(HCI_RUNNING, &hdev->flags))
2204                 goto done;
2205
2206         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
2207                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
2208                 if (err < 0) {
2209                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
2210                         goto failed;
2211                 }
2212         }
2213
2214         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
2215                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
2216                 if (err < 0) {
2217                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
2218                         goto failed;
2219                 }
2220
2221                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
2222         }
2223
2224         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
2225                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
2226                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
2227                 else
2228                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
2229         }
2230
2231         spin_lock_irq(&data->txlock);
2232         play_deferred(data);
2233         clear_bit(BTUSB_SUSPENDING, &data->flags);
2234         spin_unlock_irq(&data->txlock);
2235         schedule_work(&data->work);
2236
2237         return 0;
2238
2239 failed:
2240         usb_scuttle_anchored_urbs(&data->deferred);
2241 done:
2242         spin_lock_irq(&data->txlock);
2243         clear_bit(BTUSB_SUSPENDING, &data->flags);
2244         spin_unlock_irq(&data->txlock);
2245
2246         return err;
2247 }
2248 #endif
2249
2250 static struct usb_driver btusb_driver = {
2251         .name           = "btusb",
2252         .probe          = btusb_probe,
2253         .disconnect     = btusb_disconnect,
2254 #ifdef CONFIG_PM
2255         .suspend        = btusb_suspend,
2256         .resume         = btusb_resume,
2257 #endif
2258         .id_table       = btusb_table,
2259         .supports_autosuspend = 1,
2260         .disable_hub_initiated_lpm = 1,
2261 };
2262
2263 module_usb_driver(btusb_driver);
2264
2265 module_param(disable_scofix, bool, 0644);
2266 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
2267
2268 module_param(force_scofix, bool, 0644);
2269 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
2270
2271 module_param(reset, bool, 0644);
2272 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
2273
2274 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
2275 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
2276 MODULE_VERSION(VERSION);
2277 MODULE_LICENSE("GPL");