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(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
 160         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 161         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 162         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 163         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 164         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 165         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 166         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 167         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 168         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 169         { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
 170         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 171         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 172         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 173         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 174         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 175         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
 176         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 177         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 178         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 179         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 180         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 181         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 182         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 183         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 184         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 185         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 186         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
 187
 188         /* Atheros AR5BBU12 with sflash firmware */
 189         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 190
 191         /* Atheros AR5BBU12 with sflash firmware */
 192         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 193         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 194
 195         /* Broadcom BCM2035 */
 196         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 197         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 198         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 199
 200         /* Broadcom BCM2045 */
 201         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 202         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 203
 204         /* IBM/Lenovo ThinkPad with Broadcom chip */
 205         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 206         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 207
 208         /* HP laptop with Broadcom chip */
 209         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 210
 211         /* Dell laptop with Broadcom chip */
 212         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 213
 214         /* Dell Wireless 370 and 410 devices */
 215         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 216         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 217
 218         /* Belkin F8T012 and F8T013 devices */
 219         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 220         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 221
 222         /* Asus WL-BTD202 device */
 223         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 224
 225         /* Kensington Bluetooth USB adapter */
 226         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 227
 228         /* RTX Telecom based adapters with buggy SCO support */
 229         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 230         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 231
 232         /* CONWISE Technology based adapters with buggy SCO support */
 233         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 234
 235         /* Digianswer devices */
 236         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 237         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 238
 239         /* CSR BlueCore Bluetooth Sniffer */
 240         { USB_DEVICE(0x0a12, 0x0002),
 241           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 242
 243         /* Frontline ComProbe Bluetooth Sniffer */
 244         { USB_DEVICE(0x16d3, 0x0002),
 245           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 246
 247         /* Intel Bluetooth device */
 248         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 249         { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
 250
 251         /* Marvell device */
 252         { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
 253         { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
 254
 255         { }     /* Terminating entry */
 256 };
 257
 258 #define BTUSB_MAX_ISOC_FRAMES   10
 259
 260 #define BTUSB_INTR_RUNNING      0
 261 #define BTUSB_BULK_RUNNING      1
 262 #define BTUSB_ISOC_RUNNING      2
 263 #define BTUSB_SUSPENDING        3
 264 #define BTUSB_DID_ISO_RESUME    4
 265
 266 struct btusb_data {
 267         struct hci_dev       *hdev;
 268         struct usb_device    *udev;
 269         struct usb_interface *intf;
 270         struct usb_interface *isoc;
 271
 272         unsigned long flags;
 273
 274         struct work_struct work;
 275         struct work_struct waker;
 276
 277         struct usb_anchor deferred;
 278         struct usb_anchor tx_anchor;
 279         int tx_in_flight;
 280         spinlock_t txlock;
 281
 282         struct usb_anchor intr_anchor;
 283         struct usb_anchor bulk_anchor;
 284         struct usb_anchor isoc_anchor;
 285         spinlock_t rxlock;
 286
 287         struct sk_buff *evt_skb;
 288         struct sk_buff *acl_skb;
 289         struct sk_buff *sco_skb;
 290
 291         struct usb_endpoint_descriptor *intr_ep;
 292         struct usb_endpoint_descriptor *bulk_tx_ep;
 293         struct usb_endpoint_descriptor *bulk_rx_ep;
 294         struct usb_endpoint_descriptor *isoc_tx_ep;
 295         struct usb_endpoint_descriptor *isoc_rx_ep;
 296
 297         __u8 cmdreq_type;
 298
 299         unsigned int sco_num;
 300         int isoc_altsetting;
 301         int suspend_count;
 302 };
 303
 304 static inline void btusb_free_frags(struct btusb_data *data)
 305 {
 306         unsigned long flags;
 307
 308         spin_lock_irqsave(&data->rxlock, flags);
 309
 310         kfree_skb(data->evt_skb);
 311         data->evt_skb = NULL;
 312
 313         kfree_skb(data->acl_skb);
 314         data->acl_skb = NULL;
 315
 316         kfree_skb(data->sco_skb);
 317         data->sco_skb = NULL;
 318
 319         spin_unlock_irqrestore(&data->rxlock, flags);
 320 }
 321
 322 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
 323 {
 324         struct sk_buff *skb;
 325         int err = 0;
 326
 327         spin_lock(&data->rxlock);
 328         skb = data->evt_skb;
 329
 330         while (count) {
 331                 int len;
 332
 333                 if (!skb) {
 334                         skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
 335                         if (!skb) {
 336                                 err = -ENOMEM;
 337                                 break;
 338                         }
 339
 340                         bt_cb(skb)->pkt_type = HCI_EVENT_PKT;
 341                         bt_cb(skb)->expect = HCI_EVENT_HDR_SIZE;
 342                 }
 343
 344                 len = min_t(uint, bt_cb(skb)->expect, count);
 345                 memcpy(skb_put(skb, len), buffer, len);
 346
 347                 count -= len;
 348                 buffer += len;
 349                 bt_cb(skb)->expect -= len;
 350
 351                 if (skb->len == HCI_EVENT_HDR_SIZE) {
 352                         /* Complete event header */
 353                         bt_cb(skb)->expect = hci_event_hdr(skb)->plen;
 354
 355                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 356                                 kfree_skb(skb);
 357                                 skb = NULL;
 358
 359                                 err = -EILSEQ;
 360                                 break;
 361                         }
 362                 }
 363
 364                 if (bt_cb(skb)->expect == 0) {
 365                         /* Complete frame */
 366                         hci_recv_frame(data->hdev, skb);
 367                         skb = NULL;
 368                 }
 369         }
 370
 371         data->evt_skb = skb;
 372         spin_unlock(&data->rxlock);
 373
 374         return err;
 375 }
 376
 377 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
 378 {
 379         struct sk_buff *skb;
 380         int err = 0;
 381
 382         spin_lock(&data->rxlock);
 383         skb = data->acl_skb;
 384
 385         while (count) {
 386                 int len;
 387
 388                 if (!skb) {
 389                         skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
 390                         if (!skb) {
 391                                 err = -ENOMEM;
 392                                 break;
 393                         }
 394
 395                         bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT;
 396                         bt_cb(skb)->expect = HCI_ACL_HDR_SIZE;
 397                 }
 398
 399                 len = min_t(uint, bt_cb(skb)->expect, count);
 400                 memcpy(skb_put(skb, len), buffer, len);
 401
 402                 count -= len;
 403                 buffer += len;
 404                 bt_cb(skb)->expect -= len;
 405
 406                 if (skb->len == HCI_ACL_HDR_SIZE) {
 407                         __le16 dlen = hci_acl_hdr(skb)->dlen;
 408
 409                         /* Complete ACL header */
 410                         bt_cb(skb)->expect = __le16_to_cpu(dlen);
 411
 412                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 413                                 kfree_skb(skb);
 414                                 skb = NULL;
 415
 416                                 err = -EILSEQ;
 417                                 break;
 418                         }
 419                 }
 420
 421                 if (bt_cb(skb)->expect == 0) {
 422                         /* Complete frame */
 423                         hci_recv_frame(data->hdev, skb);
 424                         skb = NULL;
 425                 }
 426         }
 427
 428         data->acl_skb = skb;
 429         spin_unlock(&data->rxlock);
 430
 431         return err;
 432 }
 433
 434 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
 435 {
 436         struct sk_buff *skb;
 437         int err = 0;
 438
 439         spin_lock(&data->rxlock);
 440         skb = data->sco_skb;
 441
 442         while (count) {
 443                 int len;
 444
 445                 if (!skb) {
 446                         skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
 447                         if (!skb) {
 448                                 err = -ENOMEM;
 449                                 break;
 450                         }
 451
 452                         bt_cb(skb)->pkt_type = HCI_SCODATA_PKT;
 453                         bt_cb(skb)->expect = HCI_SCO_HDR_SIZE;
 454                 }
 455
 456                 len = min_t(uint, bt_cb(skb)->expect, count);
 457                 memcpy(skb_put(skb, len), buffer, len);
 458
 459                 count -= len;
 460                 buffer += len;
 461                 bt_cb(skb)->expect -= len;
 462
 463                 if (skb->len == HCI_SCO_HDR_SIZE) {
 464                         /* Complete SCO header */
 465                         bt_cb(skb)->expect = hci_sco_hdr(skb)->dlen;
 466
 467                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 468                                 kfree_skb(skb);
 469                                 skb = NULL;
 470
 471                                 err = -EILSEQ;
 472                                 break;
 473                         }
 474                 }
 475
 476                 if (bt_cb(skb)->expect == 0) {
 477                         /* Complete frame */
 478                         hci_recv_frame(data->hdev, skb);
 479                         skb = NULL;
 480                 }
 481         }
 482
 483         data->sco_skb = skb;
 484         spin_unlock(&data->rxlock);
 485
 486         return err;
 487 }
 488
 489 static void btusb_intr_complete(struct urb *urb)
 490 {
 491         struct hci_dev *hdev = urb->context;
 492         struct btusb_data *data = hci_get_drvdata(hdev);
 493         int err;
 494
 495         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 496                urb->actual_length);
 497
 498         if (!test_bit(HCI_RUNNING, &hdev->flags))
 499                 return;
 500
 501         if (urb->status == 0) {
 502                 hdev->stat.byte_rx += urb->actual_length;
 503
 504                 if (btusb_recv_intr(data, urb->transfer_buffer,
 505                                     urb->actual_length) < 0) {
 506                         BT_ERR("%s corrupted event packet", hdev->name);
 507                         hdev->stat.err_rx++;
 508                 }
 509         } else if (urb->status == -ENOENT) {
 510                 /* Avoid suspend failed when usb_kill_urb */
 511                 return;
 512         }
 513
 514         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 515                 return;
 516
 517         usb_mark_last_busy(data->udev);
 518         usb_anchor_urb(urb, &data->intr_anchor);
 519
 520         err = usb_submit_urb(urb, GFP_ATOMIC);
 521         if (err < 0) {
 522                 /* -EPERM: urb is being killed;
 523                  * -ENODEV: device got disconnected */
 524                 if (err != -EPERM && err != -ENODEV)
 525                         BT_ERR("%s urb %p failed to resubmit (%d)",
 526                                hdev->name, urb, -err);
 527                 usb_unanchor_urb(urb);
 528         }
 529 }
 530
 531 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 532 {
 533         struct btusb_data *data = hci_get_drvdata(hdev);
 534         struct urb *urb;
 535         unsigned char *buf;
 536         unsigned int pipe;
 537         int err, size;
 538
 539         BT_DBG("%s", hdev->name);
 540
 541         if (!data->intr_ep)
 542                 return -ENODEV;
 543
 544         urb = usb_alloc_urb(0, mem_flags);
 545         if (!urb)
 546                 return -ENOMEM;
 547
 548         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 549
 550         buf = kmalloc(size, mem_flags);
 551         if (!buf) {
 552                 usb_free_urb(urb);
 553                 return -ENOMEM;
 554         }
 555
 556         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 557
 558         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 559                          btusb_intr_complete, hdev, data->intr_ep->bInterval);
 560
 561         urb->transfer_flags |= URB_FREE_BUFFER;
 562
 563         usb_anchor_urb(urb, &data->intr_anchor);
 564
 565         err = usb_submit_urb(urb, mem_flags);
 566         if (err < 0) {
 567                 if (err != -EPERM && err != -ENODEV)
 568                         BT_ERR("%s urb %p submission failed (%d)",
 569                                hdev->name, urb, -err);
 570                 usb_unanchor_urb(urb);
 571         }
 572
 573         usb_free_urb(urb);
 574
 575         return err;
 576 }
 577
 578 static void btusb_bulk_complete(struct urb *urb)
 579 {
 580         struct hci_dev *hdev = urb->context;
 581         struct btusb_data *data = hci_get_drvdata(hdev);
 582         int err;
 583
 584         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 585                urb->actual_length);
 586
 587         if (!test_bit(HCI_RUNNING, &hdev->flags))
 588                 return;
 589
 590         if (urb->status == 0) {
 591                 hdev->stat.byte_rx += urb->actual_length;
 592
 593                 if (btusb_recv_bulk(data, urb->transfer_buffer,
 594                                     urb->actual_length) < 0) {
 595                         BT_ERR("%s corrupted ACL packet", hdev->name);
 596                         hdev->stat.err_rx++;
 597                 }
 598         } else if (urb->status == -ENOENT) {
 599                 /* Avoid suspend failed when usb_kill_urb */
 600                 return;
 601         }
 602
 603         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 604                 return;
 605
 606         usb_anchor_urb(urb, &data->bulk_anchor);
 607         usb_mark_last_busy(data->udev);
 608
 609         err = usb_submit_urb(urb, GFP_ATOMIC);
 610         if (err < 0) {
 611                 /* -EPERM: urb is being killed;
 612                  * -ENODEV: device got disconnected */
 613                 if (err != -EPERM && err != -ENODEV)
 614                         BT_ERR("%s urb %p failed to resubmit (%d)",
 615                                hdev->name, urb, -err);
 616                 usb_unanchor_urb(urb);
 617         }
 618 }
 619
 620 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 621 {
 622         struct btusb_data *data = hci_get_drvdata(hdev);
 623         struct urb *urb;
 624         unsigned char *buf;
 625         unsigned int pipe;
 626         int err, size = HCI_MAX_FRAME_SIZE;
 627
 628         BT_DBG("%s", hdev->name);
 629
 630         if (!data->bulk_rx_ep)
 631                 return -ENODEV;
 632
 633         urb = usb_alloc_urb(0, mem_flags);
 634         if (!urb)
 635                 return -ENOMEM;
 636
 637         buf = kmalloc(size, mem_flags);
 638         if (!buf) {
 639                 usb_free_urb(urb);
 640                 return -ENOMEM;
 641         }
 642
 643         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 644
 645         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
 646                           btusb_bulk_complete, hdev);
 647
 648         urb->transfer_flags |= URB_FREE_BUFFER;
 649
 650         usb_mark_last_busy(data->udev);
 651         usb_anchor_urb(urb, &data->bulk_anchor);
 652
 653         err = usb_submit_urb(urb, mem_flags);
 654         if (err < 0) {
 655                 if (err != -EPERM && err != -ENODEV)
 656                         BT_ERR("%s urb %p submission failed (%d)",
 657                                hdev->name, urb, -err);
 658                 usb_unanchor_urb(urb);
 659         }
 660
 661         usb_free_urb(urb);
 662
 663         return err;
 664 }
 665
 666 static void btusb_isoc_complete(struct urb *urb)
 667 {
 668         struct hci_dev *hdev = urb->context;
 669         struct btusb_data *data = hci_get_drvdata(hdev);
 670         int i, err;
 671
 672         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 673                urb->actual_length);
 674
 675         if (!test_bit(HCI_RUNNING, &hdev->flags))
 676                 return;
 677
 678         if (urb->status == 0) {
 679                 for (i = 0; i < urb->number_of_packets; i++) {
 680                         unsigned int offset = urb->iso_frame_desc[i].offset;
 681                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 682
 683                         if (urb->iso_frame_desc[i].status)
 684                                 continue;
 685
 686                         hdev->stat.byte_rx += length;
 687
 688                         if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
 689                                             length) < 0) {
 690                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 691                                 hdev->stat.err_rx++;
 692                         }
 693                 }
 694         } else if (urb->status == -ENOENT) {
 695                 /* Avoid suspend failed when usb_kill_urb */
 696                 return;
 697         }
 698
 699         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 700                 return;
 701
 702         usb_anchor_urb(urb, &data->isoc_anchor);
 703
 704         err = usb_submit_urb(urb, GFP_ATOMIC);
 705         if (err < 0) {
 706                 /* -EPERM: urb is being killed;
 707                  * -ENODEV: device got disconnected */
 708                 if (err != -EPERM && err != -ENODEV)
 709                         BT_ERR("%s urb %p failed to resubmit (%d)",
 710                                hdev->name, urb, -err);
 711                 usb_unanchor_urb(urb);
 712         }
 713 }
 714
 715 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 716 {
 717         int i, offset = 0;
 718
 719         BT_DBG("len %d mtu %d", len, mtu);
 720
 721         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 722                                         i++, offset += mtu, len -= mtu) {
 723                 urb->iso_frame_desc[i].offset = offset;
 724                 urb->iso_frame_desc[i].length = mtu;
 725         }
 726
 727         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 728                 urb->iso_frame_desc[i].offset = offset;
 729                 urb->iso_frame_desc[i].length = len;
 730                 i++;
 731         }
 732
 733         urb->number_of_packets = i;
 734 }
 735
 736 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 737 {
 738         struct btusb_data *data = hci_get_drvdata(hdev);
 739         struct urb *urb;
 740         unsigned char *buf;
 741         unsigned int pipe;
 742         int err, size;
 743
 744         BT_DBG("%s", hdev->name);
 745
 746         if (!data->isoc_rx_ep)
 747                 return -ENODEV;
 748
 749         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 750         if (!urb)
 751                 return -ENOMEM;
 752
 753         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 754                                                 BTUSB_MAX_ISOC_FRAMES;
 755
 756         buf = kmalloc(size, mem_flags);
 757         if (!buf) {
 758                 usb_free_urb(urb);
 759                 return -ENOMEM;
 760         }
 761
 762         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 763
 764         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 765                          hdev, data->isoc_rx_ep->bInterval);
 766
 767         urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
 768
 769         __fill_isoc_descriptor(urb, size,
 770                                le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 771
 772         usb_anchor_urb(urb, &data->isoc_anchor);
 773
 774         err = usb_submit_urb(urb, mem_flags);
 775         if (err < 0) {
 776                 if (err != -EPERM && err != -ENODEV)
 777                         BT_ERR("%s urb %p submission failed (%d)",
 778                                hdev->name, urb, -err);
 779                 usb_unanchor_urb(urb);
 780         }
 781
 782         usb_free_urb(urb);
 783
 784         return err;
 785 }
 786
 787 static void btusb_tx_complete(struct urb *urb)
 788 {
 789         struct sk_buff *skb = urb->context;
 790         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
 791         struct btusb_data *data = hci_get_drvdata(hdev);
 792
 793         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 794                urb->actual_length);
 795
 796         if (!test_bit(HCI_RUNNING, &hdev->flags))
 797                 goto done;
 798
 799         if (!urb->status)
 800                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 801         else
 802                 hdev->stat.err_tx++;
 803
 804 done:
 805         spin_lock(&data->txlock);
 806         data->tx_in_flight--;
 807         spin_unlock(&data->txlock);
 808
 809         kfree(urb->setup_packet);
 810
 811         kfree_skb(skb);
 812 }
 813
 814 static void btusb_isoc_tx_complete(struct urb *urb)
 815 {
 816         struct sk_buff *skb = urb->context;
 817         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
 818
 819         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 820                urb->actual_length);
 821
 822         if (!test_bit(HCI_RUNNING, &hdev->flags))
 823                 goto done;
 824
 825         if (!urb->status)
 826                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 827         else
 828                 hdev->stat.err_tx++;
 829
 830 done:
 831         kfree(urb->setup_packet);
 832
 833         kfree_skb(skb);
 834 }
 835
 836 static int btusb_open(struct hci_dev *hdev)
 837 {
 838         struct btusb_data *data = hci_get_drvdata(hdev);
 839         int err;
 840
 841         BT_DBG("%s", hdev->name);
 842
 843         err = usb_autopm_get_interface(data->intf);
 844         if (err < 0)
 845                 return err;
 846
 847         data->intf->needs_remote_wakeup = 1;
 848
 849         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 850                 goto done;
 851
 852         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 853                 goto done;
 854
 855         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 856         if (err < 0)
 857                 goto failed;
 858
 859         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 860         if (err < 0) {
 861                 usb_kill_anchored_urbs(&data->intr_anchor);
 862                 goto failed;
 863         }
 864
 865         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 866         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 867
 868 done:
 869         usb_autopm_put_interface(data->intf);
 870         return 0;
 871
 872 failed:
 873         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 874         clear_bit(HCI_RUNNING, &hdev->flags);
 875         usb_autopm_put_interface(data->intf);
 876         return err;
 877 }
 878
 879 static void btusb_stop_traffic(struct btusb_data *data)
 880 {
 881         usb_kill_anchored_urbs(&data->intr_anchor);
 882         usb_kill_anchored_urbs(&data->bulk_anchor);
 883         usb_kill_anchored_urbs(&data->isoc_anchor);
 884 }
 885
 886 static int btusb_close(struct hci_dev *hdev)
 887 {
 888         struct btusb_data *data = hci_get_drvdata(hdev);
 889         int err;
 890
 891         BT_DBG("%s", hdev->name);
 892
 893         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 894                 return 0;
 895
 896         cancel_work_sync(&data->work);
 897         cancel_work_sync(&data->waker);
 898
 899         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 900         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 901         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 902
 903         btusb_stop_traffic(data);
 904         btusb_free_frags(data);
 905
 906         err = usb_autopm_get_interface(data->intf);
 907         if (err < 0)
 908                 goto failed;
 909
 910         data->intf->needs_remote_wakeup = 0;
 911         usb_autopm_put_interface(data->intf);
 912
 913 failed:
 914         usb_scuttle_anchored_urbs(&data->deferred);
 915         return 0;
 916 }
 917
 918 static int btusb_flush(struct hci_dev *hdev)
 919 {
 920         struct btusb_data *data = hci_get_drvdata(hdev);
 921
 922         BT_DBG("%s", hdev->name);
 923
 924         usb_kill_anchored_urbs(&data->tx_anchor);
 925         btusb_free_frags(data);
 926
 927         return 0;
 928 }
 929
 930 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
 931 {
 932         struct btusb_data *data = hci_get_drvdata(hdev);
 933         struct usb_ctrlrequest *dr;
 934         struct urb *urb;
 935         unsigned int pipe;
 936
 937         urb = usb_alloc_urb(0, GFP_KERNEL);
 938         if (!urb)
 939                 return ERR_PTR(-ENOMEM);
 940
 941         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
 942         if (!dr) {
 943                 usb_free_urb(urb);
 944                 return ERR_PTR(-ENOMEM);
 945         }
 946
 947         dr->bRequestType = data->cmdreq_type;
 948         dr->bRequest     = 0;
 949         dr->wIndex       = 0;
 950         dr->wValue       = 0;
 951         dr->wLength      = __cpu_to_le16(skb->len);
 952
 953         pipe = usb_sndctrlpipe(data->udev, 0x00);
 954
 955         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
 956                              skb->data, skb->len, btusb_tx_complete, skb);
 957
 958         skb->dev = (void *)hdev;
 959
 960         return urb;
 961 }
 962
 963 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
 964 {
 965         struct btusb_data *data = hci_get_drvdata(hdev);
 966         struct urb *urb;
 967         unsigned int pipe;
 968
 969         if (!data->bulk_tx_ep)
 970                 return ERR_PTR(-ENODEV);
 971
 972         urb = usb_alloc_urb(0, GFP_KERNEL);
 973         if (!urb)
 974                 return ERR_PTR(-ENOMEM);
 975
 976         pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
 977
 978         usb_fill_bulk_urb(urb, data->udev, pipe,
 979                           skb->data, skb->len, btusb_tx_complete, skb);
 980
 981         skb->dev = (void *)hdev;
 982
 983         return urb;
 984 }
 985
 986 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
 987 {
 988         struct btusb_data *data = hci_get_drvdata(hdev);
 989         struct urb *urb;
 990         unsigned int pipe;
 991
 992         if (!data->isoc_tx_ep)
 993                 return ERR_PTR(-ENODEV);
 994
 995         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
 996         if (!urb)
 997                 return ERR_PTR(-ENOMEM);
 998
 999         pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1000
1001         usb_fill_int_urb(urb, data->udev, pipe,
1002                          skb->data, skb->len, btusb_isoc_tx_complete,
1003                          skb, data->isoc_tx_ep->bInterval);
1004
1005         urb->transfer_flags  = URB_ISO_ASAP;
1006
1007         __fill_isoc_descriptor(urb, skb->len,
1008                                le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1009
1010         skb->dev = (void *)hdev;
1011
1012         return urb;
1013 }
1014
1015 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1016 {
1017         struct btusb_data *data = hci_get_drvdata(hdev);
1018         int err;
1019
1020         usb_anchor_urb(urb, &data->tx_anchor);
1021
1022         err = usb_submit_urb(urb, GFP_KERNEL);
1023         if (err < 0) {
1024                 if (err != -EPERM && err != -ENODEV)
1025                         BT_ERR("%s urb %p submission failed (%d)",
1026                                hdev->name, urb, -err);
1027                 kfree(urb->setup_packet);
1028                 usb_unanchor_urb(urb);
1029         } else {
1030                 usb_mark_last_busy(data->udev);
1031         }
1032
1033         usb_free_urb(urb);
1034         return err;
1035 }
1036
1037 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1038 {
1039         struct btusb_data *data = hci_get_drvdata(hdev);
1040         unsigned long flags;
1041         bool suspending;
1042
1043         spin_lock_irqsave(&data->txlock, flags);
1044         suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1045         if (!suspending)
1046                 data->tx_in_flight++;
1047         spin_unlock_irqrestore(&data->txlock, flags);
1048
1049         if (!suspending)
1050                 return submit_tx_urb(hdev, urb);
1051
1052         usb_anchor_urb(urb, &data->deferred);
1053         schedule_work(&data->waker);
1054
1055         usb_free_urb(urb);
1056         return 0;
1057 }
1058
1059 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1060 {
1061         struct urb *urb;
1062
1063         BT_DBG("%s", hdev->name);
1064
1065         if (!test_bit(HCI_RUNNING, &hdev->flags))
1066                 return -EBUSY;
1067
1068         switch (bt_cb(skb)->pkt_type) {
1069         case HCI_COMMAND_PKT:
1070                 urb = alloc_ctrl_urb(hdev, skb);
1071                 if (IS_ERR(urb))
1072                         return PTR_ERR(urb);
1073
1074                 hdev->stat.cmd_tx++;
1075                 return submit_or_queue_tx_urb(hdev, urb);
1076
1077         case HCI_ACLDATA_PKT:
1078                 urb = alloc_bulk_urb(hdev, skb);
1079                 if (IS_ERR(urb))
1080                         return PTR_ERR(urb);
1081
1082                 hdev->stat.acl_tx++;
1083                 return submit_or_queue_tx_urb(hdev, urb);
1084
1085         case HCI_SCODATA_PKT:
1086                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1087                         return -ENODEV;
1088
1089                 urb = alloc_isoc_urb(hdev, skb);
1090                 if (IS_ERR(urb))
1091                         return PTR_ERR(urb);
1092
1093                 hdev->stat.sco_tx++;
1094                 return submit_tx_urb(hdev, urb);
1095         }
1096
1097         return -EILSEQ;
1098 }
1099
1100 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1101 {
1102         struct btusb_data *data = hci_get_drvdata(hdev);
1103
1104         BT_DBG("%s evt %d", hdev->name, evt);
1105
1106         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1107                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1108                 schedule_work(&data->work);
1109         }
1110 }
1111
1112 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1113 {
1114         struct btusb_data *data = hci_get_drvdata(hdev);
1115         struct usb_interface *intf = data->isoc;
1116         struct usb_endpoint_descriptor *ep_desc;
1117         int i, err;
1118
1119         if (!data->isoc)
1120                 return -ENODEV;
1121
1122         err = usb_set_interface(data->udev, 1, altsetting);
1123         if (err < 0) {
1124                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
1125                 return err;
1126         }
1127
1128         data->isoc_altsetting = altsetting;
1129
1130         data->isoc_tx_ep = NULL;
1131         data->isoc_rx_ep = NULL;
1132
1133         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1134                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1135
1136                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1137                         data->isoc_tx_ep = ep_desc;
1138                         continue;
1139                 }
1140
1141                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1142                         data->isoc_rx_ep = ep_desc;
1143                         continue;
1144                 }
1145         }
1146
1147         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1148                 BT_ERR("%s invalid SCO descriptors", hdev->name);
1149                 return -ENODEV;
1150         }
1151
1152         return 0;
1153 }
1154
1155 static void btusb_work(struct work_struct *work)
1156 {
1157         struct btusb_data *data = container_of(work, struct btusb_data, work);
1158         struct hci_dev *hdev = data->hdev;
1159         int new_alts;
1160         int err;
1161
1162         if (data->sco_num > 0) {
1163                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1164                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1165                         if (err < 0) {
1166                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1167                                 usb_kill_anchored_urbs(&data->isoc_anchor);
1168                                 return;
1169                         }
1170
1171                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1172                 }
1173
1174                 if (hdev->voice_setting & 0x0020) {
1175                         static const int alts[3] = { 2, 4, 5 };
1176
1177                         new_alts = alts[data->sco_num - 1];
1178                 } else {
1179                         new_alts = data->sco_num;
1180                 }
1181
1182                 if (data->isoc_altsetting != new_alts) {
1183                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1184                         usb_kill_anchored_urbs(&data->isoc_anchor);
1185
1186                         if (__set_isoc_interface(hdev, new_alts) < 0)
1187                                 return;
1188                 }
1189
1190                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1191                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1192                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1193                         else
1194                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1195                 }
1196         } else {
1197                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1198                 usb_kill_anchored_urbs(&data->isoc_anchor);
1199
1200                 __set_isoc_interface(hdev, 0);
1201                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1202                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1203         }
1204 }
1205
1206 static void btusb_waker(struct work_struct *work)
1207 {
1208         struct btusb_data *data = container_of(work, struct btusb_data, waker);
1209         int err;
1210
1211         err = usb_autopm_get_interface(data->intf);
1212         if (err < 0)
1213                 return;
1214
1215         usb_autopm_put_interface(data->intf);
1216 }
1217
1218 static int btusb_setup_bcm92035(struct hci_dev *hdev)
1219 {
1220         struct sk_buff *skb;
1221         u8 val = 0x00;
1222
1223         BT_DBG("%s", hdev->name);
1224
1225         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1226         if (IS_ERR(skb))
1227                 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
1228         else
1229                 kfree_skb(skb);
1230
1231         return 0;
1232 }
1233
1234 static int btusb_setup_csr(struct hci_dev *hdev)
1235 {
1236         struct hci_rp_read_local_version *rp;
1237         struct sk_buff *skb;
1238         int ret;
1239
1240         BT_DBG("%s", hdev->name);
1241
1242         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1243                              HCI_INIT_TIMEOUT);
1244         if (IS_ERR(skb)) {
1245                 BT_ERR("Reading local version failed (%ld)", -PTR_ERR(skb));
1246                 return -PTR_ERR(skb);
1247         }
1248
1249         rp = (struct hci_rp_read_local_version *)skb->data;
1250
1251         if (!rp->status) {
1252                 if (le16_to_cpu(rp->manufacturer) != 10) {
1253                         /* Clear the reset quirk since this is not an actual
1254                          * early Bluetooth 1.1 device from CSR.
1255                          */
1256                         clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1257
1258                         /* These fake CSR controllers have all a broken
1259                          * stored link key handling and so just disable it.
1260                          */
1261                         set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY,
1262                                 &hdev->quirks);
1263                 }
1264         }
1265
1266         ret = -bt_to_errno(rp->status);
1267
1268         kfree_skb(skb);
1269
1270         return ret;
1271 }
1272
1273 struct intel_version {
1274         u8 status;
1275         u8 hw_platform;
1276         u8 hw_variant;
1277         u8 hw_revision;
1278         u8 fw_variant;
1279         u8 fw_revision;
1280         u8 fw_build_num;
1281         u8 fw_build_ww;
1282         u8 fw_build_yy;
1283         u8 fw_patch_num;
1284 } __packed;
1285
1286 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1287                                                        struct intel_version *ver)
1288 {
1289         const struct firmware *fw;
1290         char fwname[64];
1291         int ret;
1292
1293         snprintf(fwname, sizeof(fwname),
1294                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1295                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
1296                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1297                  ver->fw_build_ww, ver->fw_build_yy);
1298
1299         ret = request_firmware(&fw, fwname, &hdev->dev);
1300         if (ret < 0) {
1301                 if (ret == -EINVAL) {
1302                         BT_ERR("%s Intel firmware file request failed (%d)",
1303                                hdev->name, ret);
1304                         return NULL;
1305                 }
1306
1307                 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1308                        hdev->name, fwname, ret);
1309
1310                 /* If the correct firmware patch file is not found, use the
1311                  * default firmware patch file instead
1312                  */
1313                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1314                          ver->hw_platform, ver->hw_variant);
1315                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1316                         BT_ERR("%s failed to open default Intel fw file: %s",
1317                                hdev->name, fwname);
1318                         return NULL;
1319                 }
1320         }
1321
1322         BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1323
1324         return fw;
1325 }
1326
1327 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1328                                       const struct firmware *fw,
1329                                       const u8 **fw_ptr, int *disable_patch)
1330 {
1331         struct sk_buff *skb;
1332         struct hci_command_hdr *cmd;
1333         const u8 *cmd_param;
1334         struct hci_event_hdr *evt = NULL;
1335         const u8 *evt_param = NULL;
1336         int remain = fw->size - (*fw_ptr - fw->data);
1337
1338         /* The first byte indicates the types of the patch command or event.
1339          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1340          * in the current firmware buffer doesn't start with 0x01 or
1341          * the size of remain buffer is smaller than HCI command header,
1342          * the firmware file is corrupted and it should stop the patching
1343          * process.
1344          */
1345         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1346                 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1347                 return -EINVAL;
1348         }
1349         (*fw_ptr)++;
1350         remain--;
1351
1352         cmd = (struct hci_command_hdr *)(*fw_ptr);
1353         *fw_ptr += sizeof(*cmd);
1354         remain -= sizeof(*cmd);
1355
1356         /* Ensure that the remain firmware data is long enough than the length
1357          * of command parameter. If not, the firmware file is corrupted.
1358          */
1359         if (remain < cmd->plen) {
1360                 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1361                 return -EFAULT;
1362         }
1363
1364         /* If there is a command that loads a patch in the firmware
1365          * file, then enable the patch upon success, otherwise just
1366          * disable the manufacturer mode, for example patch activation
1367          * is not required when the default firmware patch file is used
1368          * because there are no patch data to load.
1369          */
1370         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1371                 *disable_patch = 0;
1372
1373         cmd_param = *fw_ptr;
1374         *fw_ptr += cmd->plen;
1375         remain -= cmd->plen;
1376
1377         /* This reads the expected events when the above command is sent to the
1378          * device. Some vendor commands expects more than one events, for
1379          * example command status event followed by vendor specific event.
1380          * For this case, it only keeps the last expected event. so the command
1381          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1382          * last expected event.
1383          */
1384         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1385                 (*fw_ptr)++;
1386                 remain--;
1387
1388                 evt = (struct hci_event_hdr *)(*fw_ptr);
1389                 *fw_ptr += sizeof(*evt);
1390                 remain -= sizeof(*evt);
1391
1392                 if (remain < evt->plen) {
1393                         BT_ERR("%s Intel fw corrupted: invalid evt len",
1394                                hdev->name);
1395                         return -EFAULT;
1396                 }
1397
1398                 evt_param = *fw_ptr;
1399                 *fw_ptr += evt->plen;
1400                 remain -= evt->plen;
1401         }
1402
1403         /* Every HCI commands in the firmware file has its correspond event.
1404          * If event is not found or remain is smaller than zero, the firmware
1405          * file is corrupted.
1406          */
1407         if (!evt || !evt_param || remain < 0) {
1408                 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1409                 return -EFAULT;
1410         }
1411
1412         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1413                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1414         if (IS_ERR(skb)) {
1415                 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1416                        hdev->name, cmd->opcode, PTR_ERR(skb));
1417                 return PTR_ERR(skb);
1418         }
1419
1420         /* It ensures that the returned event matches the event data read from
1421          * the firmware file. At fist, it checks the length and then
1422          * the contents of the event.
1423          */
1424         if (skb->len != evt->plen) {
1425                 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1426                        le16_to_cpu(cmd->opcode));
1427                 kfree_skb(skb);
1428                 return -EFAULT;
1429         }
1430
1431         if (memcmp(skb->data, evt_param, evt->plen)) {
1432                 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1433                        hdev->name, le16_to_cpu(cmd->opcode));
1434                 kfree_skb(skb);
1435                 return -EFAULT;
1436         }
1437         kfree_skb(skb);
1438
1439         return 0;
1440 }
1441
1442 #define BDADDR_INTEL (&(bdaddr_t) {{0x00, 0x8b, 0x9e, 0x19, 0x03, 0x00}})
1443
1444 static int btusb_check_bdaddr_intel(struct hci_dev *hdev)
1445 {
1446         struct sk_buff *skb;
1447         struct hci_rp_read_bd_addr *rp;
1448
1449         skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
1450                              HCI_INIT_TIMEOUT);
1451         if (IS_ERR(skb)) {
1452                 BT_ERR("%s reading Intel device address failed (%ld)",
1453                        hdev->name, PTR_ERR(skb));
1454                 return PTR_ERR(skb);
1455         }
1456
1457         if (skb->len != sizeof(*rp)) {
1458                 BT_ERR("%s Intel device address length mismatch", hdev->name);
1459                 kfree_skb(skb);
1460                 return -EIO;
1461         }
1462
1463         rp = (struct hci_rp_read_bd_addr *)skb->data;
1464         if (rp->status) {
1465                 BT_ERR("%s Intel device address result failed (%02x)",
1466                        hdev->name, rp->status);
1467                 kfree_skb(skb);
1468                 return -bt_to_errno(rp->status);
1469         }
1470
1471         /* For some Intel based controllers, the default Bluetooth device
1472          * address 00:03:19:9E:8B:00 can be found. These controllers are
1473          * fully operational, but have the danger of duplicate addresses
1474          * and that in turn can cause problems with Bluetooth operation.
1475          */
1476         if (!bacmp(&rp->bdaddr, BDADDR_INTEL)) {
1477                 BT_ERR("%s found Intel default device address (%pMR)",
1478                        hdev->name, &rp->bdaddr);
1479                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
1480         }
1481
1482         kfree_skb(skb);
1483
1484         return 0;
1485 }
1486
1487 static int btusb_setup_intel(struct hci_dev *hdev)
1488 {
1489         struct sk_buff *skb;
1490         const struct firmware *fw;
1491         const u8 *fw_ptr;
1492         int disable_patch;
1493         struct intel_version *ver;
1494
1495         const u8 mfg_enable[] = { 0x01, 0x00 };
1496         const u8 mfg_disable[] = { 0x00, 0x00 };
1497         const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
1498         const u8 mfg_reset_activate[] = { 0x00, 0x02 };
1499
1500         BT_DBG("%s", hdev->name);
1501
1502         /* The controller has a bug with the first HCI command sent to it
1503          * returning number of completed commands as zero. This would stall the
1504          * command processing in the Bluetooth core.
1505          *
1506          * As a workaround, send HCI Reset command first which will reset the
1507          * number of completed commands and allow normal command processing
1508          * from now on.
1509          */
1510         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1511         if (IS_ERR(skb)) {
1512                 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1513                        hdev->name, PTR_ERR(skb));
1514                 return PTR_ERR(skb);
1515         }
1516         kfree_skb(skb);
1517
1518         /* Read Intel specific controller version first to allow selection of
1519          * which firmware file to load.
1520          *
1521          * The returned information are hardware variant and revision plus
1522          * firmware variant, revision and build number.
1523          */
1524         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1525         if (IS_ERR(skb)) {
1526                 BT_ERR("%s reading Intel fw version command failed (%ld)",
1527                        hdev->name, PTR_ERR(skb));
1528                 return PTR_ERR(skb);
1529         }
1530
1531         if (skb->len != sizeof(*ver)) {
1532                 BT_ERR("%s Intel version event length mismatch", hdev->name);
1533                 kfree_skb(skb);
1534                 return -EIO;
1535         }
1536
1537         ver = (struct intel_version *)skb->data;
1538         if (ver->status) {
1539                 BT_ERR("%s Intel fw version event failed (%02x)", hdev->name,
1540                        ver->status);
1541                 kfree_skb(skb);
1542                 return -bt_to_errno(ver->status);
1543         }
1544
1545         BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1546                 hdev->name, ver->hw_platform, ver->hw_variant,
1547                 ver->hw_revision, ver->fw_variant,  ver->fw_revision,
1548                 ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
1549                 ver->fw_patch_num);
1550
1551         /* fw_patch_num indicates the version of patch the device currently
1552          * have. If there is no patch data in the device, it is always 0x00.
1553          * So, if it is other than 0x00, no need to patch the deivce again.
1554          */
1555         if (ver->fw_patch_num) {
1556                 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1557                         hdev->name, ver->fw_patch_num);
1558                 kfree_skb(skb);
1559                 btusb_check_bdaddr_intel(hdev);
1560                 return 0;
1561         }
1562
1563         /* Opens the firmware patch file based on the firmware version read
1564          * from the controller. If it fails to open the matching firmware
1565          * patch file, it tries to open the default firmware patch file.
1566          * If no patch file is found, allow the device to operate without
1567          * a patch.
1568          */
1569         fw = btusb_setup_intel_get_fw(hdev, ver);
1570         if (!fw) {
1571                 kfree_skb(skb);
1572                 btusb_check_bdaddr_intel(hdev);
1573                 return 0;
1574         }
1575         fw_ptr = fw->data;
1576
1577         /* This Intel specific command enables the manufacturer mode of the
1578          * controller.
1579          *
1580          * Only while this mode is enabled, the driver can download the
1581          * firmware patch data and configuration parameters.
1582          */
1583         skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
1584         if (IS_ERR(skb)) {
1585                 BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
1586                        hdev->name, PTR_ERR(skb));
1587                 release_firmware(fw);
1588                 return PTR_ERR(skb);
1589         }
1590
1591         if (skb->data[0]) {
1592                 u8 evt_status = skb->data[0];
1593
1594                 BT_ERR("%s enable Intel manufacturer mode event failed (%02x)",
1595                        hdev->name, evt_status);
1596                 kfree_skb(skb);
1597                 release_firmware(fw);
1598                 return -bt_to_errno(evt_status);
1599         }
1600         kfree_skb(skb);
1601
1602         disable_patch = 1;
1603
1604         /* The firmware data file consists of list of Intel specific HCI
1605          * commands and its expected events. The first byte indicates the
1606          * type of the message, either HCI command or HCI event.
1607          *
1608          * It reads the command and its expected event from the firmware file,
1609          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1610          * the returned event is compared with the event read from the firmware
1611          * file and it will continue until all the messages are downloaded to
1612          * the controller.
1613          *
1614          * Once the firmware patching is completed successfully,
1615          * the manufacturer mode is disabled with reset and activating the
1616          * downloaded patch.
1617          *
1618          * If the firmware patching fails, the manufacturer mode is
1619          * disabled with reset and deactivating the patch.
1620          *
1621          * If the default patch file is used, no reset is done when disabling
1622          * the manufacturer.
1623          */
1624         while (fw->size > fw_ptr - fw->data) {
1625                 int ret;
1626
1627                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1628                                                  &disable_patch);
1629                 if (ret < 0)
1630                         goto exit_mfg_deactivate;
1631         }
1632
1633         release_firmware(fw);
1634
1635         if (disable_patch)
1636                 goto exit_mfg_disable;
1637
1638         /* Patching completed successfully and disable the manufacturer mode
1639          * with reset and activate the downloaded firmware patches.
1640          */
1641         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
1642                              mfg_reset_activate, HCI_INIT_TIMEOUT);
1643         if (IS_ERR(skb)) {
1644                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1645                        hdev->name, PTR_ERR(skb));
1646                 return PTR_ERR(skb);
1647         }
1648         kfree_skb(skb);
1649
1650         BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1651                 hdev->name);
1652
1653         btusb_check_bdaddr_intel(hdev);
1654         return 0;
1655
1656 exit_mfg_disable:
1657         /* Disable the manufacturer mode without reset */
1658         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
1659                              HCI_INIT_TIMEOUT);
1660         if (IS_ERR(skb)) {
1661                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1662                        hdev->name, PTR_ERR(skb));
1663                 return PTR_ERR(skb);
1664         }
1665         kfree_skb(skb);
1666
1667         BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1668
1669         btusb_check_bdaddr_intel(hdev);
1670         return 0;
1671
1672 exit_mfg_deactivate:
1673         release_firmware(fw);
1674
1675         /* Patching failed. Disable the manufacturer mode with reset and
1676          * deactivate the downloaded firmware patches.
1677          */
1678         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
1679                              mfg_reset_deactivate, HCI_INIT_TIMEOUT);
1680         if (IS_ERR(skb)) {
1681                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1682                        hdev->name, PTR_ERR(skb));
1683                 return PTR_ERR(skb);
1684         }
1685         kfree_skb(skb);
1686
1687         BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1688                 hdev->name);
1689
1690         btusb_check_bdaddr_intel(hdev);
1691         return 0;
1692 }
1693
1694 static int btusb_set_bdaddr_intel(struct hci_dev *hdev, const bdaddr_t *bdaddr)
1695 {
1696         struct sk_buff *skb;
1697         long ret;
1698
1699         skb = __hci_cmd_sync(hdev, 0xfc31, 6, bdaddr, HCI_INIT_TIMEOUT);
1700         if (IS_ERR(skb)) {
1701                 ret = PTR_ERR(skb);
1702                 BT_ERR("%s: changing Intel device address failed (%ld)",
1703                        hdev->name, ret);
1704                 return ret;
1705         }
1706         kfree_skb(skb);
1707
1708         return 0;
1709 }
1710
1711 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
1712                                     const bdaddr_t *bdaddr)
1713 {
1714         struct sk_buff *skb;
1715         u8 buf[8];
1716         long ret;
1717
1718         buf[0] = 0xfe;
1719         buf[1] = sizeof(bdaddr_t);
1720         memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
1721
1722         skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
1723         if (IS_ERR(skb)) {
1724                 ret = PTR_ERR(skb);
1725                 BT_ERR("%s: changing Marvell device address failed (%ld)",
1726                        hdev->name, ret);
1727                 return ret;
1728         }
1729         kfree_skb(skb);
1730
1731         return 0;
1732 }
1733
1734 #define BDADDR_BCM20702A0 (&(bdaddr_t) {{0x00, 0xa0, 0x02, 0x70, 0x20, 0x00}})
1735
1736 static int btusb_setup_bcm_patchram(struct hci_dev *hdev)
1737 {
1738         struct btusb_data *data = hci_get_drvdata(hdev);
1739         struct usb_device *udev = data->udev;
1740         char fw_name[64];
1741         const struct firmware *fw;
1742         const u8 *fw_ptr;
1743         size_t fw_size;
1744         const struct hci_command_hdr *cmd;
1745         const u8 *cmd_param;
1746         u16 opcode;
1747         struct sk_buff *skb;
1748         struct hci_rp_read_local_version *ver;
1749         struct hci_rp_read_bd_addr *bda;
1750         long ret;
1751
1752         snprintf(fw_name, sizeof(fw_name), "brcm/%s-%04x-%04x.hcd",
1753                  udev->product ? udev->product : "BCM",
1754                  le16_to_cpu(udev->descriptor.idVendor),
1755                  le16_to_cpu(udev->descriptor.idProduct));
1756
1757         ret = request_firmware(&fw, fw_name, &hdev->dev);
1758         if (ret < 0) {
1759                 BT_INFO("%s: BCM: patch %s not found", hdev->name, fw_name);
1760                 return 0;
1761         }
1762
1763         /* Reset */
1764         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1765         if (IS_ERR(skb)) {
1766                 ret = PTR_ERR(skb);
1767                 BT_ERR("%s: HCI_OP_RESET failed (%ld)", hdev->name, ret);
1768                 goto done;
1769         }
1770         kfree_skb(skb);
1771
1772         /* Read Local Version Info */
1773         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1774                              HCI_INIT_TIMEOUT);
1775         if (IS_ERR(skb)) {
1776                 ret = PTR_ERR(skb);
1777                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION failed (%ld)",
1778                        hdev->name, ret);
1779                 goto done;
1780         }
1781
1782         if (skb->len != sizeof(*ver)) {
1783                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION event length mismatch",
1784                        hdev->name);
1785                 kfree_skb(skb);
1786                 ret = -EIO;
1787                 goto done;
1788         }
1789
1790         ver = (struct hci_rp_read_local_version *)skb->data;
1791         BT_INFO("%s: BCM: patching hci_ver=%02x hci_rev=%04x lmp_ver=%02x "
1792                 "lmp_subver=%04x", hdev->name, ver->hci_ver, ver->hci_rev,
1793                 ver->lmp_ver, ver->lmp_subver);
1794         kfree_skb(skb);
1795
1796         /* Start Download */
1797         skb = __hci_cmd_sync(hdev, 0xfc2e, 0, NULL, HCI_INIT_TIMEOUT);
1798         if (IS_ERR(skb)) {
1799                 ret = PTR_ERR(skb);
1800                 BT_ERR("%s: BCM: Download Minidrv command failed (%ld)",
1801                        hdev->name, ret);
1802                 goto reset_fw;
1803         }
1804         kfree_skb(skb);
1805
1806         /* 50 msec delay after Download Minidrv completes */
1807         msleep(50);
1808
1809         fw_ptr = fw->data;
1810         fw_size = fw->size;
1811
1812         while (fw_size >= sizeof(*cmd)) {
1813                 cmd = (struct hci_command_hdr *)fw_ptr;
1814                 fw_ptr += sizeof(*cmd);
1815                 fw_size -= sizeof(*cmd);
1816
1817                 if (fw_size < cmd->plen) {
1818                         BT_ERR("%s: BCM: patch %s is corrupted",
1819                                hdev->name, fw_name);
1820                         ret = -EINVAL;
1821                         goto reset_fw;
1822                 }
1823
1824                 cmd_param = fw_ptr;
1825                 fw_ptr += cmd->plen;
1826                 fw_size -= cmd->plen;
1827
1828                 opcode = le16_to_cpu(cmd->opcode);
1829
1830                 skb = __hci_cmd_sync(hdev, opcode, cmd->plen, cmd_param,
1831                                      HCI_INIT_TIMEOUT);
1832                 if (IS_ERR(skb)) {
1833                         ret = PTR_ERR(skb);
1834                         BT_ERR("%s: BCM: patch command %04x failed (%ld)",
1835                                hdev->name, opcode, ret);
1836                         goto reset_fw;
1837                 }
1838                 kfree_skb(skb);
1839         }
1840
1841         /* 250 msec delay after Launch Ram completes */
1842         msleep(250);
1843
1844 reset_fw:
1845         /* Reset */
1846         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1847         if (IS_ERR(skb)) {
1848                 ret = PTR_ERR(skb);
1849                 BT_ERR("%s: HCI_OP_RESET failed (%ld)", hdev->name, ret);
1850                 goto done;
1851         }
1852         kfree_skb(skb);
1853
1854         /* Read Local Version Info */
1855         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1856                              HCI_INIT_TIMEOUT);
1857         if (IS_ERR(skb)) {
1858                 ret = PTR_ERR(skb);
1859                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION failed (%ld)",
1860                        hdev->name, ret);
1861                 goto done;
1862         }
1863
1864         if (skb->len != sizeof(*ver)) {
1865                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION event length mismatch",
1866                        hdev->name);
1867                 kfree_skb(skb);
1868                 ret = -EIO;
1869                 goto done;
1870         }
1871
1872         ver = (struct hci_rp_read_local_version *)skb->data;
1873         BT_INFO("%s: BCM: firmware hci_ver=%02x hci_rev=%04x lmp_ver=%02x "
1874                 "lmp_subver=%04x", hdev->name, ver->hci_ver, ver->hci_rev,
1875                 ver->lmp_ver, ver->lmp_subver);
1876         kfree_skb(skb);
1877
1878         /* Read BD Address */
1879         skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
1880                              HCI_INIT_TIMEOUT);
1881         if (IS_ERR(skb)) {
1882                 ret = PTR_ERR(skb);
1883                 BT_ERR("%s: HCI_OP_READ_BD_ADDR failed (%ld)",
1884                        hdev->name, ret);
1885                 goto done;
1886         }
1887
1888         if (skb->len != sizeof(*bda)) {
1889                 BT_ERR("%s: HCI_OP_READ_BD_ADDR event length mismatch",
1890                        hdev->name);
1891                 kfree_skb(skb);
1892                 ret = -EIO;
1893                 goto done;
1894         }
1895
1896         bda = (struct hci_rp_read_bd_addr *)skb->data;
1897         if (bda->status) {
1898                 BT_ERR("%s: HCI_OP_READ_BD_ADDR error status (%02x)",
1899                        hdev->name, bda->status);
1900                 kfree_skb(skb);
1901                 ret = -bt_to_errno(bda->status);
1902                 goto done;
1903         }
1904
1905         /* The address 00:20:70:02:A0:00 indicates a BCM20702A0 controller
1906          * with no configured address.
1907          */
1908         if (!bacmp(&bda->bdaddr, BDADDR_BCM20702A0)) {
1909                 BT_INFO("%s: BCM: using default device address (%pMR)",
1910                         hdev->name, &bda->bdaddr);
1911                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
1912         }
1913
1914         kfree_skb(skb);
1915
1916 done:
1917         release_firmware(fw);
1918
1919         return ret;
1920 }
1921
1922 static int btusb_set_bdaddr_bcm(struct hci_dev *hdev, const bdaddr_t *bdaddr)
1923 {
1924         struct sk_buff *skb;
1925         long ret;
1926
1927         skb = __hci_cmd_sync(hdev, 0xfc01, 6, bdaddr, HCI_INIT_TIMEOUT);
1928         if (IS_ERR(skb)) {
1929                 ret = PTR_ERR(skb);
1930                 BT_ERR("%s: BCM: Change address command failed (%ld)",
1931                        hdev->name, ret);
1932                 return ret;
1933         }
1934         kfree_skb(skb);
1935
1936         return 0;
1937 }
1938
1939 static int btusb_probe(struct usb_interface *intf,
1940                        const struct usb_device_id *id)
1941 {
1942         struct usb_endpoint_descriptor *ep_desc;
1943         struct btusb_data *data;
1944         struct hci_dev *hdev;
1945         int i, err;
1946
1947         BT_DBG("intf %p id %p", intf, id);
1948
1949         /* interface numbers are hardcoded in the spec */
1950         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
1951                 return -ENODEV;
1952
1953         if (!id->driver_info) {
1954                 const struct usb_device_id *match;
1955
1956                 match = usb_match_id(intf, blacklist_table);
1957                 if (match)
1958                         id = match;
1959         }
1960
1961         if (id->driver_info == BTUSB_IGNORE)
1962                 return -ENODEV;
1963
1964         if (id->driver_info & BTUSB_ATH3012) {
1965                 struct usb_device *udev = interface_to_usbdev(intf);
1966
1967                 /* Old firmware would otherwise let ath3k driver load
1968                  * patch and sysconfig files */
1969                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
1970                         return -ENODEV;
1971         }
1972
1973         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
1974         if (!data)
1975                 return -ENOMEM;
1976
1977         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1978                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1979
1980                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
1981                         data->intr_ep = ep_desc;
1982                         continue;
1983                 }
1984
1985                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
1986                         data->bulk_tx_ep = ep_desc;
1987                         continue;
1988                 }
1989
1990                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
1991                         data->bulk_rx_ep = ep_desc;
1992                         continue;
1993                 }
1994         }
1995
1996         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
1997                 return -ENODEV;
1998
1999         data->cmdreq_type = USB_TYPE_CLASS;
2000
2001         data->udev = interface_to_usbdev(intf);
2002         data->intf = intf;
2003
2004         INIT_WORK(&data->work, btusb_work);
2005         INIT_WORK(&data->waker, btusb_waker);
2006         init_usb_anchor(&data->deferred);
2007         init_usb_anchor(&data->tx_anchor);
2008         spin_lock_init(&data->txlock);
2009
2010         init_usb_anchor(&data->intr_anchor);
2011         init_usb_anchor(&data->bulk_anchor);
2012         init_usb_anchor(&data->isoc_anchor);
2013         spin_lock_init(&data->rxlock);
2014
2015         hdev = hci_alloc_dev();
2016         if (!hdev)
2017                 return -ENOMEM;
2018
2019         hdev->bus = HCI_USB;
2020         hci_set_drvdata(hdev, data);
2021
2022         data->hdev = hdev;
2023
2024         SET_HCIDEV_DEV(hdev, &intf->dev);
2025
2026         hdev->open   = btusb_open;
2027         hdev->close  = btusb_close;
2028         hdev->flush  = btusb_flush;
2029         hdev->send   = btusb_send_frame;
2030         hdev->notify = btusb_notify;
2031
2032         if (id->driver_info & BTUSB_BCM92035)
2033                 hdev->setup = btusb_setup_bcm92035;
2034
2035         if (id->driver_info & BTUSB_BCM_PATCHRAM) {
2036                 hdev->setup = btusb_setup_bcm_patchram;
2037                 hdev->set_bdaddr = btusb_set_bdaddr_bcm;
2038         }
2039
2040         if (id->driver_info & BTUSB_INTEL) {
2041                 hdev->setup = btusb_setup_intel;
2042                 hdev->set_bdaddr = btusb_set_bdaddr_intel;
2043         }
2044
2045         if (id->driver_info & BTUSB_MARVELL)
2046                 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
2047
2048         if (id->driver_info & BTUSB_INTEL_BOOT)
2049                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
2050
2051         /* Interface numbers are hardcoded in the specification */
2052         data->isoc = usb_ifnum_to_if(data->udev, 1);
2053
2054         if (!reset)
2055                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2056
2057         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
2058                 if (!disable_scofix)
2059                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
2060         }
2061
2062         if (id->driver_info & BTUSB_BROKEN_ISOC)
2063                 data->isoc = NULL;
2064
2065         if (id->driver_info & BTUSB_DIGIANSWER) {
2066                 data->cmdreq_type = USB_TYPE_VENDOR;
2067                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2068         }
2069
2070         if (id->driver_info & BTUSB_CSR) {
2071                 struct usb_device *udev = data->udev;
2072                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
2073
2074                 /* Old firmware would otherwise execute USB reset */
2075                 if (bcdDevice < 0x117)
2076                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2077
2078                 /* Fake CSR devices with broken commands */
2079                 if (bcdDevice <= 0x100)
2080                         hdev->setup = btusb_setup_csr;
2081         }
2082
2083         if (id->driver_info & BTUSB_SNIFFER) {
2084                 struct usb_device *udev = data->udev;
2085
2086                 /* New sniffer firmware has crippled HCI interface */
2087                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
2088                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
2089         }
2090
2091         if (id->driver_info & BTUSB_INTEL_BOOT) {
2092                 /* A bug in the bootloader causes that interrupt interface is
2093                  * only enabled after receiving SetInterface(0, AltSetting=0).
2094                  */
2095                 err = usb_set_interface(data->udev, 0, 0);
2096                 if (err < 0) {
2097                         BT_ERR("failed to set interface 0, alt 0 %d", err);
2098                         hci_free_dev(hdev);
2099                         return err;
2100                 }
2101         }
2102
2103         if (data->isoc) {
2104                 err = usb_driver_claim_interface(&btusb_driver,
2105                                                  data->isoc, data);
2106                 if (err < 0) {
2107                         hci_free_dev(hdev);
2108                         return err;
2109                 }
2110         }
2111
2112         err = hci_register_dev(hdev);
2113         if (err < 0) {
2114                 hci_free_dev(hdev);
2115                 return err;
2116         }
2117
2118         usb_set_intfdata(intf, data);
2119
2120         return 0;
2121 }
2122
2123 static void btusb_disconnect(struct usb_interface *intf)
2124 {
2125         struct btusb_data *data = usb_get_intfdata(intf);
2126         struct hci_dev *hdev;
2127
2128         BT_DBG("intf %p", intf);
2129
2130         if (!data)
2131                 return;
2132
2133         hdev = data->hdev;
2134         usb_set_intfdata(data->intf, NULL);
2135
2136         if (data->isoc)
2137                 usb_set_intfdata(data->isoc, NULL);
2138
2139         hci_unregister_dev(hdev);
2140
2141         if (intf == data->isoc)
2142                 usb_driver_release_interface(&btusb_driver, data->intf);
2143         else if (data->isoc)
2144                 usb_driver_release_interface(&btusb_driver, data->isoc);
2145
2146         btusb_free_frags(data);
2147         hci_free_dev(hdev);
2148 }
2149
2150 #ifdef CONFIG_PM
2151 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
2152 {
2153         struct btusb_data *data = usb_get_intfdata(intf);
2154
2155         BT_DBG("intf %p", intf);
2156
2157         if (data->suspend_count++)
2158                 return 0;
2159
2160         spin_lock_irq(&data->txlock);
2161         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
2162                 set_bit(BTUSB_SUSPENDING, &data->flags);
2163                 spin_unlock_irq(&data->txlock);
2164         } else {
2165                 spin_unlock_irq(&data->txlock);
2166                 data->suspend_count--;
2167                 return -EBUSY;
2168         }
2169
2170         cancel_work_sync(&data->work);
2171
2172         btusb_stop_traffic(data);
2173         usb_kill_anchored_urbs(&data->tx_anchor);
2174
2175         return 0;
2176 }
2177
2178 static void play_deferred(struct btusb_data *data)
2179 {
2180         struct urb *urb;
2181         int err;
2182
2183         while ((urb = usb_get_from_anchor(&data->deferred))) {
2184                 err = usb_submit_urb(urb, GFP_ATOMIC);
2185                 if (err < 0)
2186                         break;
2187
2188                 data->tx_in_flight++;
2189         }
2190         usb_scuttle_anchored_urbs(&data->deferred);
2191 }
2192
2193 static int btusb_resume(struct usb_interface *intf)
2194 {
2195         struct btusb_data *data = usb_get_intfdata(intf);
2196         struct hci_dev *hdev = data->hdev;
2197         int err = 0;
2198
2199         BT_DBG("intf %p", intf);
2200
2201         if (--data->suspend_count)
2202                 return 0;
2203
2204         if (!test_bit(HCI_RUNNING, &hdev->flags))
2205                 goto done;
2206
2207         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
2208                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
2209                 if (err < 0) {
2210                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
2211                         goto failed;
2212                 }
2213         }
2214
2215         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
2216                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
2217                 if (err < 0) {
2218                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
2219                         goto failed;
2220                 }
2221
2222                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
2223         }
2224
2225         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
2226                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
2227                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
2228                 else
2229                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
2230         }
2231
2232         spin_lock_irq(&data->txlock);
2233         play_deferred(data);
2234         clear_bit(BTUSB_SUSPENDING, &data->flags);
2235         spin_unlock_irq(&data->txlock);
2236         schedule_work(&data->work);
2237
2238         return 0;
2239
2240 failed:
2241         usb_scuttle_anchored_urbs(&data->deferred);
2242 done:
2243         spin_lock_irq(&data->txlock);
2244         clear_bit(BTUSB_SUSPENDING, &data->flags);
2245         spin_unlock_irq(&data->txlock);
2246
2247         return err;
2248 }
2249 #endif
2250
2251 static struct usb_driver btusb_driver = {
2252         .name           = "btusb",
2253         .probe          = btusb_probe,
2254         .disconnect     = btusb_disconnect,
2255 #ifdef CONFIG_PM
2256         .suspend        = btusb_suspend,
2257         .resume         = btusb_resume,
2258 #endif
2259         .id_table       = btusb_table,
2260         .supports_autosuspend = 1,
2261         .disable_hub_initiated_lpm = 1,
2262 };
2263
2264 module_usb_driver(btusb_driver);
2265
2266 module_param(disable_scofix, bool, 0644);
2267 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
2268
2269 module_param(force_scofix, bool, 0644);
2270 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
2271
2272 module_param(reset, bool, 0644);
2273 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
2274
2275 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
2276 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
2277 MODULE_VERSION(VERSION);
2278 MODULE_LICENSE("GPL");