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 #include <asm/unaligned.h>
  28
  29 #include <net/bluetooth/bluetooth.h>
  30 #include <net/bluetooth/hci_core.h>
  31
  32 #include "btintel.h"
  33 #include "btbcm.h"
  34 #include "btrtl.h"
  35
  36 #define VERSION "0.8"
  37
  38 static bool disable_scofix;
  39 static bool force_scofix;
  40
  41 static bool reset = true;
  42
  43 static struct usb_driver btusb_driver;
  44
  45 #define BTUSB_IGNORE            0x01
  46 #define BTUSB_DIGIANSWER        0x02
  47 #define BTUSB_CSR               0x04
  48 #define BTUSB_SNIFFER           0x08
  49 #define BTUSB_BCM92035          0x10
  50 #define BTUSB_BROKEN_ISOC       0x20
  51 #define BTUSB_WRONG_SCO_MTU     0x40
  52 #define BTUSB_ATH3012           0x80
  53 #define BTUSB_INTEL             0x100
  54 #define BTUSB_INTEL_BOOT        0x200
  55 #define BTUSB_BCM_PATCHRAM      0x400
  56 #define BTUSB_MARVELL           0x800
  57 #define BTUSB_SWAVE             0x1000
  58 #define BTUSB_INTEL_NEW         0x2000
  59 #define BTUSB_AMP               0x4000
  60 #define BTUSB_QCA_ROME          0x8000
  61 #define BTUSB_BCM_APPLE         0x10000
  62 #define BTUSB_REALTEK           0x20000
  63 #define BTUSB_BCM2045           0x40000
  64
  65 static const struct usb_device_id btusb_table[] = {
  66         /* Generic Bluetooth USB device */
  67         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  68
  69         /* Generic Bluetooth AMP device */
  70         { USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP },
  71
  72         /* Generic Bluetooth USB interface */
  73         { USB_INTERFACE_INFO(0xe0, 0x01, 0x01) },
  74
  75         /* Apple-specific (Broadcom) devices */
  76         { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01),
  77           .driver_info = BTUSB_BCM_APPLE },
  78
  79         /* MediaTek MT76x0E */
  80         { USB_DEVICE(0x0e8d, 0x763f) },
  81
  82         /* Broadcom SoftSailing reporting vendor specific */
  83         { USB_DEVICE(0x0a5c, 0x21e1) },
  84
  85         /* Apple MacBookPro 7,1 */
  86         { USB_DEVICE(0x05ac, 0x8213) },
  87
  88         /* Apple iMac11,1 */
  89         { USB_DEVICE(0x05ac, 0x8215) },
  90
  91         /* Apple MacBookPro6,2 */
  92         { USB_DEVICE(0x05ac, 0x8218) },
  93
  94         /* Apple MacBookAir3,1, MacBookAir3,2 */
  95         { USB_DEVICE(0x05ac, 0x821b) },
  96
  97         /* Apple MacBookAir4,1 */
  98         { USB_DEVICE(0x05ac, 0x821f) },
  99
 100         /* Apple MacBookPro8,2 */
 101         { USB_DEVICE(0x05ac, 0x821a) },
 102
 103         /* Apple MacMini5,1 */
 104         { USB_DEVICE(0x05ac, 0x8281) },
 105
 106         /* AVM BlueFRITZ! USB v2.0 */
 107         { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE },
 108
 109         /* Bluetooth Ultraport Module from IBM */
 110         { USB_DEVICE(0x04bf, 0x030a) },
 111
 112         /* ALPS Modules with non-standard id */
 113         { USB_DEVICE(0x044e, 0x3001) },
 114         { USB_DEVICE(0x044e, 0x3002) },
 115
 116         /* Ericsson with non-standard id */
 117         { USB_DEVICE(0x0bdb, 0x1002) },
 118
 119         /* Canyon CN-BTU1 with HID interfaces */
 120         { USB_DEVICE(0x0c10, 0x0000) },
 121
 122         /* Broadcom BCM20702A0 */
 123         { USB_DEVICE(0x413c, 0x8197) },
 124
 125         /* Broadcom BCM20702B0 (Dynex/Insignia) */
 126         { USB_DEVICE(0x19ff, 0x0239), .driver_info = BTUSB_BCM_PATCHRAM },
 127
 128         /* Broadcom BCM43142A0 (Foxconn/Lenovo) */
 129         { USB_DEVICE(0x105b, 0xe065), .driver_info = BTUSB_BCM_PATCHRAM },
 130
 131         /* Foxconn - Hon Hai */
 132         { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01),
 133           .driver_info = BTUSB_BCM_PATCHRAM },
 134
 135         /* Lite-On Technology - Broadcom based */
 136         { USB_VENDOR_AND_INTERFACE_INFO(0x04ca, 0xff, 0x01, 0x01),
 137           .driver_info = BTUSB_BCM_PATCHRAM },
 138
 139         /* Broadcom devices with vendor specific id */
 140         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
 141           .driver_info = BTUSB_BCM_PATCHRAM },
 142
 143         /* ASUSTek Computer - Broadcom based */
 144         { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01),
 145           .driver_info = BTUSB_BCM_PATCHRAM },
 146
 147         /* Belkin F8065bf - Broadcom based */
 148         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01),
 149           .driver_info = BTUSB_BCM_PATCHRAM },
 150
 151         /* IMC Networks - Broadcom based */
 152         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01),
 153           .driver_info = BTUSB_BCM_PATCHRAM },
 154
 155         /* Intel Bluetooth USB Bootloader (RAM module) */
 156         { USB_DEVICE(0x8087, 0x0a5a),
 157           .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
 158
 159         { }     /* Terminating entry */
 160 };
 161
 162 MODULE_DEVICE_TABLE(usb, btusb_table);
 163
 164 static const struct usb_device_id blacklist_table[] = {
 165         /* CSR BlueCore devices */
 166         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 167
 168         /* Broadcom BCM2033 without firmware */
 169         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 170
 171         /* Broadcom BCM2045 devices */
 172         { USB_DEVICE(0x0a5c, 0x2045), .driver_info = BTUSB_BCM2045 },
 173
 174         /* Atheros 3011 with sflash firmware */
 175         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 176         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 177         { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE },
 178         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 179         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 180         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 181         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 182
 183         /* Atheros AR9285 Malbec with sflash firmware */
 184         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 185
 186         /* Atheros 3012 with sflash firmware */
 187         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 188         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 189         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 190         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 191         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 192         { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
 193         { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
 194         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 195         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 196         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 197         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 198         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 199         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 200         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 201         { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
 202         { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
 203         { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
 204         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 205         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 206         { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
 207         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 208         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 209         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 210         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 211         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 212         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
 213         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 214         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 215         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 216         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 217         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 218         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 219         { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 },
 220         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 221         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 222         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 223         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 224         { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
 225         { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
 226         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
 227         { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
 228
 229         /* Atheros AR5BBU12 with sflash firmware */
 230         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 231
 232         /* Atheros AR5BBU12 with sflash firmware */
 233         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 234         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 235
 236         /* QCA ROME chipset */
 237         { USB_DEVICE(0x0cf3, 0xe007), .driver_info = BTUSB_QCA_ROME },
 238         { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME },
 239         { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME },
 240
 241         /* Broadcom BCM2035 */
 242         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 243         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 244         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 245
 246         /* Broadcom BCM2045 */
 247         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 248         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 249
 250         /* IBM/Lenovo ThinkPad with Broadcom chip */
 251         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 252         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 253
 254         /* HP laptop with Broadcom chip */
 255         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 256
 257         /* Dell laptop with Broadcom chip */
 258         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 259
 260         /* Dell Wireless 370 and 410 devices */
 261         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 262         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 263
 264         /* Belkin F8T012 and F8T013 devices */
 265         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 266         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 267
 268         /* Asus WL-BTD202 device */
 269         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 270
 271         /* Kensington Bluetooth USB adapter */
 272         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 273
 274         /* RTX Telecom based adapters with buggy SCO support */
 275         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 276         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 277
 278         /* CONWISE Technology based adapters with buggy SCO support */
 279         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 280
 281         /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
 282         { USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE },
 283
 284         /* Digianswer devices */
 285         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 286         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 287
 288         /* CSR BlueCore Bluetooth Sniffer */
 289         { USB_DEVICE(0x0a12, 0x0002),
 290           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 291
 292         /* Frontline ComProbe Bluetooth Sniffer */
 293         { USB_DEVICE(0x16d3, 0x0002),
 294           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 295
 296         /* Marvell Bluetooth devices */
 297         { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
 298         { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
 299
 300         /* Intel Bluetooth devices */
 301         { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR },
 302         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 303         { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
 304         { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_NEW },
 305
 306         /* Other Intel Bluetooth devices */
 307         { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01),
 308           .driver_info = BTUSB_IGNORE },
 309
 310         /* Realtek Bluetooth devices */
 311         { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01),
 312           .driver_info = BTUSB_REALTEK },
 313
 314         /* Additional Realtek 8723AE Bluetooth devices */
 315         { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK },
 316         { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK },
 317
 318         /* Additional Realtek 8723BE Bluetooth devices */
 319         { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK },
 320         { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK },
 321         { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
 322         { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
 323         { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },
 324
 325         /* Additional Realtek 8821AE Bluetooth devices */
 326         { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
 327         { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },
 328         { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK },
 329         { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK },
 330         { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK },
 331
 332         /* Silicon Wave based devices */
 333         { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE },
 334
 335         { }     /* Terminating entry */
 336 };
 337
 338 #define BTUSB_MAX_ISOC_FRAMES   10
 339
 340 #define BTUSB_INTR_RUNNING      0
 341 #define BTUSB_BULK_RUNNING      1
 342 #define BTUSB_ISOC_RUNNING      2
 343 #define BTUSB_SUSPENDING        3
 344 #define BTUSB_DID_ISO_RESUME    4
 345 #define BTUSB_BOOTLOADER        5
 346 #define BTUSB_DOWNLOADING       6
 347 #define BTUSB_FIRMWARE_LOADED   7
 348 #define BTUSB_FIRMWARE_FAILED   8
 349 #define BTUSB_BOOTING           9
 350 #define BTUSB_RESET_RESUME      10
 351 #define BTUSB_DIAG_RUNNING      11
 352
 353 struct btusb_data {
 354         struct hci_dev       *hdev;
 355         struct usb_device    *udev;
 356         struct usb_interface *intf;
 357         struct usb_interface *isoc;
 358         struct usb_interface *diag;
 359
 360         unsigned long flags;
 361
 362         struct work_struct work;
 363         struct work_struct waker;
 364
 365         struct usb_anchor deferred;
 366         struct usb_anchor tx_anchor;
 367         int tx_in_flight;
 368         spinlock_t txlock;
 369
 370         struct usb_anchor intr_anchor;
 371         struct usb_anchor bulk_anchor;
 372         struct usb_anchor isoc_anchor;
 373         struct usb_anchor diag_anchor;
 374         spinlock_t rxlock;
 375
 376         struct sk_buff *evt_skb;
 377         struct sk_buff *acl_skb;
 378         struct sk_buff *sco_skb;
 379
 380         struct usb_endpoint_descriptor *intr_ep;
 381         struct usb_endpoint_descriptor *bulk_tx_ep;
 382         struct usb_endpoint_descriptor *bulk_rx_ep;
 383         struct usb_endpoint_descriptor *isoc_tx_ep;
 384         struct usb_endpoint_descriptor *isoc_rx_ep;
 385         struct usb_endpoint_descriptor *diag_tx_ep;
 386         struct usb_endpoint_descriptor *diag_rx_ep;
 387
 388         __u8 cmdreq_type;
 389         __u8 cmdreq;
 390
 391         unsigned int sco_num;
 392         int isoc_altsetting;
 393         int suspend_count;
 394
 395         int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
 396         int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
 397
 398         int (*setup_on_usb)(struct hci_dev *hdev);
 399 };
 400
 401 static inline void btusb_free_frags(struct btusb_data *data)
 402 {
 403         unsigned long flags;
 404
 405         spin_lock_irqsave(&data->rxlock, flags);
 406
 407         kfree_skb(data->evt_skb);
 408         data->evt_skb = NULL;
 409
 410         kfree_skb(data->acl_skb);
 411         data->acl_skb = NULL;
 412
 413         kfree_skb(data->sco_skb);
 414         data->sco_skb = NULL;
 415
 416         spin_unlock_irqrestore(&data->rxlock, flags);
 417 }
 418
 419 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
 420 {
 421         struct sk_buff *skb;
 422         int err = 0;
 423
 424         spin_lock(&data->rxlock);
 425         skb = data->evt_skb;
 426
 427         while (count) {
 428                 int len;
 429
 430                 if (!skb) {
 431                         skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
 432                         if (!skb) {
 433                                 err = -ENOMEM;
 434                                 break;
 435                         }
 436
 437                         bt_cb(skb)->pkt_type = HCI_EVENT_PKT;
 438                         bt_cb(skb)->expect = HCI_EVENT_HDR_SIZE;
 439                 }
 440
 441                 len = min_t(uint, bt_cb(skb)->expect, count);
 442                 memcpy(skb_put(skb, len), buffer, len);
 443
 444                 count -= len;
 445                 buffer += len;
 446                 bt_cb(skb)->expect -= len;
 447
 448                 if (skb->len == HCI_EVENT_HDR_SIZE) {
 449                         /* Complete event header */
 450                         bt_cb(skb)->expect = hci_event_hdr(skb)->plen;
 451
 452                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 453                                 kfree_skb(skb);
 454                                 skb = NULL;
 455
 456                                 err = -EILSEQ;
 457                                 break;
 458                         }
 459                 }
 460
 461                 if (bt_cb(skb)->expect == 0) {
 462                         /* Complete frame */
 463                         data->recv_event(data->hdev, skb);
 464                         skb = NULL;
 465                 }
 466         }
 467
 468         data->evt_skb = skb;
 469         spin_unlock(&data->rxlock);
 470
 471         return err;
 472 }
 473
 474 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
 475 {
 476         struct sk_buff *skb;
 477         int err = 0;
 478
 479         spin_lock(&data->rxlock);
 480         skb = data->acl_skb;
 481
 482         while (count) {
 483                 int len;
 484
 485                 if (!skb) {
 486                         skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
 487                         if (!skb) {
 488                                 err = -ENOMEM;
 489                                 break;
 490                         }
 491
 492                         bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT;
 493                         bt_cb(skb)->expect = HCI_ACL_HDR_SIZE;
 494                 }
 495
 496                 len = min_t(uint, bt_cb(skb)->expect, count);
 497                 memcpy(skb_put(skb, len), buffer, len);
 498
 499                 count -= len;
 500                 buffer += len;
 501                 bt_cb(skb)->expect -= len;
 502
 503                 if (skb->len == HCI_ACL_HDR_SIZE) {
 504                         __le16 dlen = hci_acl_hdr(skb)->dlen;
 505
 506                         /* Complete ACL header */
 507                         bt_cb(skb)->expect = __le16_to_cpu(dlen);
 508
 509                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 510                                 kfree_skb(skb);
 511                                 skb = NULL;
 512
 513                                 err = -EILSEQ;
 514                                 break;
 515                         }
 516                 }
 517
 518                 if (bt_cb(skb)->expect == 0) {
 519                         /* Complete frame */
 520                         hci_recv_frame(data->hdev, skb);
 521                         skb = NULL;
 522                 }
 523         }
 524
 525         data->acl_skb = skb;
 526         spin_unlock(&data->rxlock);
 527
 528         return err;
 529 }
 530
 531 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
 532 {
 533         struct sk_buff *skb;
 534         int err = 0;
 535
 536         spin_lock(&data->rxlock);
 537         skb = data->sco_skb;
 538
 539         while (count) {
 540                 int len;
 541
 542                 if (!skb) {
 543                         skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
 544                         if (!skb) {
 545                                 err = -ENOMEM;
 546                                 break;
 547                         }
 548
 549                         bt_cb(skb)->pkt_type = HCI_SCODATA_PKT;
 550                         bt_cb(skb)->expect = HCI_SCO_HDR_SIZE;
 551                 }
 552
 553                 len = min_t(uint, bt_cb(skb)->expect, count);
 554                 memcpy(skb_put(skb, len), buffer, len);
 555
 556                 count -= len;
 557                 buffer += len;
 558                 bt_cb(skb)->expect -= len;
 559
 560                 if (skb->len == HCI_SCO_HDR_SIZE) {
 561                         /* Complete SCO header */
 562                         bt_cb(skb)->expect = hci_sco_hdr(skb)->dlen;
 563
 564                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 565                                 kfree_skb(skb);
 566                                 skb = NULL;
 567
 568                                 err = -EILSEQ;
 569                                 break;
 570                         }
 571                 }
 572
 573                 if (bt_cb(skb)->expect == 0) {
 574                         /* Complete frame */
 575                         hci_recv_frame(data->hdev, skb);
 576                         skb = NULL;
 577                 }
 578         }
 579
 580         data->sco_skb = skb;
 581         spin_unlock(&data->rxlock);
 582
 583         return err;
 584 }
 585
 586 static void btusb_intr_complete(struct urb *urb)
 587 {
 588         struct hci_dev *hdev = urb->context;
 589         struct btusb_data *data = hci_get_drvdata(hdev);
 590         int err;
 591
 592         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 593                urb->actual_length);
 594
 595         if (!test_bit(HCI_RUNNING, &hdev->flags))
 596                 return;
 597
 598         if (urb->status == 0) {
 599                 hdev->stat.byte_rx += urb->actual_length;
 600
 601                 if (btusb_recv_intr(data, urb->transfer_buffer,
 602                                     urb->actual_length) < 0) {
 603                         BT_ERR("%s corrupted event packet", hdev->name);
 604                         hdev->stat.err_rx++;
 605                 }
 606         } else if (urb->status == -ENOENT) {
 607                 /* Avoid suspend failed when usb_kill_urb */
 608                 return;
 609         }
 610
 611         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 612                 return;
 613
 614         usb_mark_last_busy(data->udev);
 615         usb_anchor_urb(urb, &data->intr_anchor);
 616
 617         err = usb_submit_urb(urb, GFP_ATOMIC);
 618         if (err < 0) {
 619                 /* -EPERM: urb is being killed;
 620                  * -ENODEV: device got disconnected */
 621                 if (err != -EPERM && err != -ENODEV)
 622                         BT_ERR("%s urb %p failed to resubmit (%d)",
 623                                hdev->name, urb, -err);
 624                 usb_unanchor_urb(urb);
 625         }
 626 }
 627
 628 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 629 {
 630         struct btusb_data *data = hci_get_drvdata(hdev);
 631         struct urb *urb;
 632         unsigned char *buf;
 633         unsigned int pipe;
 634         int err, size;
 635
 636         BT_DBG("%s", hdev->name);
 637
 638         if (!data->intr_ep)
 639                 return -ENODEV;
 640
 641         urb = usb_alloc_urb(0, mem_flags);
 642         if (!urb)
 643                 return -ENOMEM;
 644
 645         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 646
 647         buf = kmalloc(size, mem_flags);
 648         if (!buf) {
 649                 usb_free_urb(urb);
 650                 return -ENOMEM;
 651         }
 652
 653         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 654
 655         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 656                          btusb_intr_complete, hdev, data->intr_ep->bInterval);
 657
 658         urb->transfer_flags |= URB_FREE_BUFFER;
 659
 660         usb_anchor_urb(urb, &data->intr_anchor);
 661
 662         err = usb_submit_urb(urb, mem_flags);
 663         if (err < 0) {
 664                 if (err != -EPERM && err != -ENODEV)
 665                         BT_ERR("%s urb %p submission failed (%d)",
 666                                hdev->name, urb, -err);
 667                 usb_unanchor_urb(urb);
 668         }
 669
 670         usb_free_urb(urb);
 671
 672         return err;
 673 }
 674
 675 static void btusb_bulk_complete(struct urb *urb)
 676 {
 677         struct hci_dev *hdev = urb->context;
 678         struct btusb_data *data = hci_get_drvdata(hdev);
 679         int err;
 680
 681         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 682                urb->actual_length);
 683
 684         if (!test_bit(HCI_RUNNING, &hdev->flags))
 685                 return;
 686
 687         if (urb->status == 0) {
 688                 hdev->stat.byte_rx += urb->actual_length;
 689
 690                 if (data->recv_bulk(data, urb->transfer_buffer,
 691                                     urb->actual_length) < 0) {
 692                         BT_ERR("%s corrupted ACL packet", hdev->name);
 693                         hdev->stat.err_rx++;
 694                 }
 695         } else if (urb->status == -ENOENT) {
 696                 /* Avoid suspend failed when usb_kill_urb */
 697                 return;
 698         }
 699
 700         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 701                 return;
 702
 703         usb_anchor_urb(urb, &data->bulk_anchor);
 704         usb_mark_last_busy(data->udev);
 705
 706         err = usb_submit_urb(urb, GFP_ATOMIC);
 707         if (err < 0) {
 708                 /* -EPERM: urb is being killed;
 709                  * -ENODEV: device got disconnected */
 710                 if (err != -EPERM && err != -ENODEV)
 711                         BT_ERR("%s urb %p failed to resubmit (%d)",
 712                                hdev->name, urb, -err);
 713                 usb_unanchor_urb(urb);
 714         }
 715 }
 716
 717 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 718 {
 719         struct btusb_data *data = hci_get_drvdata(hdev);
 720         struct urb *urb;
 721         unsigned char *buf;
 722         unsigned int pipe;
 723         int err, size = HCI_MAX_FRAME_SIZE;
 724
 725         BT_DBG("%s", hdev->name);
 726
 727         if (!data->bulk_rx_ep)
 728                 return -ENODEV;
 729
 730         urb = usb_alloc_urb(0, mem_flags);
 731         if (!urb)
 732                 return -ENOMEM;
 733
 734         buf = kmalloc(size, mem_flags);
 735         if (!buf) {
 736                 usb_free_urb(urb);
 737                 return -ENOMEM;
 738         }
 739
 740         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 741
 742         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
 743                           btusb_bulk_complete, hdev);
 744
 745         urb->transfer_flags |= URB_FREE_BUFFER;
 746
 747         usb_mark_last_busy(data->udev);
 748         usb_anchor_urb(urb, &data->bulk_anchor);
 749
 750         err = usb_submit_urb(urb, mem_flags);
 751         if (err < 0) {
 752                 if (err != -EPERM && err != -ENODEV)
 753                         BT_ERR("%s urb %p submission failed (%d)",
 754                                hdev->name, urb, -err);
 755                 usb_unanchor_urb(urb);
 756         }
 757
 758         usb_free_urb(urb);
 759
 760         return err;
 761 }
 762
 763 static void btusb_isoc_complete(struct urb *urb)
 764 {
 765         struct hci_dev *hdev = urb->context;
 766         struct btusb_data *data = hci_get_drvdata(hdev);
 767         int i, err;
 768
 769         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 770                urb->actual_length);
 771
 772         if (!test_bit(HCI_RUNNING, &hdev->flags))
 773                 return;
 774
 775         if (urb->status == 0) {
 776                 for (i = 0; i < urb->number_of_packets; i++) {
 777                         unsigned int offset = urb->iso_frame_desc[i].offset;
 778                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 779
 780                         if (urb->iso_frame_desc[i].status)
 781                                 continue;
 782
 783                         hdev->stat.byte_rx += length;
 784
 785                         if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
 786                                             length) < 0) {
 787                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 788                                 hdev->stat.err_rx++;
 789                         }
 790                 }
 791         } else if (urb->status == -ENOENT) {
 792                 /* Avoid suspend failed when usb_kill_urb */
 793                 return;
 794         }
 795
 796         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 797                 return;
 798
 799         usb_anchor_urb(urb, &data->isoc_anchor);
 800
 801         err = usb_submit_urb(urb, GFP_ATOMIC);
 802         if (err < 0) {
 803                 /* -EPERM: urb is being killed;
 804                  * -ENODEV: device got disconnected */
 805                 if (err != -EPERM && err != -ENODEV)
 806                         BT_ERR("%s urb %p failed to resubmit (%d)",
 807                                hdev->name, urb, -err);
 808                 usb_unanchor_urb(urb);
 809         }
 810 }
 811
 812 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 813 {
 814         int i, offset = 0;
 815
 816         BT_DBG("len %d mtu %d", len, mtu);
 817
 818         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 819                                         i++, offset += mtu, len -= mtu) {
 820                 urb->iso_frame_desc[i].offset = offset;
 821                 urb->iso_frame_desc[i].length = mtu;
 822         }
 823
 824         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 825                 urb->iso_frame_desc[i].offset = offset;
 826                 urb->iso_frame_desc[i].length = len;
 827                 i++;
 828         }
 829
 830         urb->number_of_packets = i;
 831 }
 832
 833 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 834 {
 835         struct btusb_data *data = hci_get_drvdata(hdev);
 836         struct urb *urb;
 837         unsigned char *buf;
 838         unsigned int pipe;
 839         int err, size;
 840
 841         BT_DBG("%s", hdev->name);
 842
 843         if (!data->isoc_rx_ep)
 844                 return -ENODEV;
 845
 846         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 847         if (!urb)
 848                 return -ENOMEM;
 849
 850         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 851                                                 BTUSB_MAX_ISOC_FRAMES;
 852
 853         buf = kmalloc(size, mem_flags);
 854         if (!buf) {
 855                 usb_free_urb(urb);
 856                 return -ENOMEM;
 857         }
 858
 859         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 860
 861         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 862                          hdev, data->isoc_rx_ep->bInterval);
 863
 864         urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
 865
 866         __fill_isoc_descriptor(urb, size,
 867                                le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 868
 869         usb_anchor_urb(urb, &data->isoc_anchor);
 870
 871         err = usb_submit_urb(urb, mem_flags);
 872         if (err < 0) {
 873                 if (err != -EPERM && err != -ENODEV)
 874                         BT_ERR("%s urb %p submission failed (%d)",
 875                                hdev->name, urb, -err);
 876                 usb_unanchor_urb(urb);
 877         }
 878
 879         usb_free_urb(urb);
 880
 881         return err;
 882 }
 883
 884 static void btusb_diag_complete(struct urb *urb)
 885 {
 886         struct hci_dev *hdev = urb->context;
 887         struct btusb_data *data = hci_get_drvdata(hdev);
 888         int err;
 889
 890         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 891                urb->actual_length);
 892
 893         if (urb->status == 0) {
 894                 struct sk_buff *skb;
 895
 896                 skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC);
 897                 if (skb) {
 898                         memcpy(skb_put(skb, urb->actual_length),
 899                                urb->transfer_buffer, urb->actual_length);
 900                         hci_recv_diag(hdev, skb);
 901                 }
 902         } else if (urb->status == -ENOENT) {
 903                 /* Avoid suspend failed when usb_kill_urb */
 904                 return;
 905         }
 906
 907         if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags))
 908                 return;
 909
 910         usb_anchor_urb(urb, &data->diag_anchor);
 911         usb_mark_last_busy(data->udev);
 912
 913         err = usb_submit_urb(urb, GFP_ATOMIC);
 914         if (err < 0) {
 915                 /* -EPERM: urb is being killed;
 916                  * -ENODEV: device got disconnected */
 917                 if (err != -EPERM && err != -ENODEV)
 918                         BT_ERR("%s urb %p failed to resubmit (%d)",
 919                                hdev->name, urb, -err);
 920                 usb_unanchor_urb(urb);
 921         }
 922 }
 923
 924 static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags)
 925 {
 926         struct btusb_data *data = hci_get_drvdata(hdev);
 927         struct urb *urb;
 928         unsigned char *buf;
 929         unsigned int pipe;
 930         int err, size = HCI_MAX_FRAME_SIZE;
 931
 932         BT_DBG("%s", hdev->name);
 933
 934         if (!data->diag_rx_ep)
 935                 return -ENODEV;
 936
 937         urb = usb_alloc_urb(0, mem_flags);
 938         if (!urb)
 939                 return -ENOMEM;
 940
 941         buf = kmalloc(size, mem_flags);
 942         if (!buf) {
 943                 usb_free_urb(urb);
 944                 return -ENOMEM;
 945         }
 946
 947         pipe = usb_rcvbulkpipe(data->udev, data->diag_rx_ep->bEndpointAddress);
 948
 949         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
 950                           btusb_diag_complete, hdev);
 951
 952         urb->transfer_flags |= URB_FREE_BUFFER;
 953
 954         usb_mark_last_busy(data->udev);
 955         usb_anchor_urb(urb, &data->diag_anchor);
 956
 957         err = usb_submit_urb(urb, mem_flags);
 958         if (err < 0) {
 959                 if (err != -EPERM && err != -ENODEV)
 960                         BT_ERR("%s urb %p submission failed (%d)",
 961                                hdev->name, urb, -err);
 962                 usb_unanchor_urb(urb);
 963         }
 964
 965         usb_free_urb(urb);
 966
 967         return err;
 968 }
 969
 970 static void btusb_tx_complete(struct urb *urb)
 971 {
 972         struct sk_buff *skb = urb->context;
 973         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
 974         struct btusb_data *data = hci_get_drvdata(hdev);
 975
 976         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 977                urb->actual_length);
 978
 979         if (!test_bit(HCI_RUNNING, &hdev->flags))
 980                 goto done;
 981
 982         if (!urb->status)
 983                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 984         else
 985                 hdev->stat.err_tx++;
 986
 987 done:
 988         spin_lock(&data->txlock);
 989         data->tx_in_flight--;
 990         spin_unlock(&data->txlock);
 991
 992         kfree(urb->setup_packet);
 993
 994         kfree_skb(skb);
 995 }
 996
 997 static void btusb_isoc_tx_complete(struct urb *urb)
 998 {
 999         struct sk_buff *skb = urb->context;
1000         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1001
1002         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1003                urb->actual_length);
1004
1005         if (!test_bit(HCI_RUNNING, &hdev->flags))
1006                 goto done;
1007
1008         if (!urb->status)
1009                 hdev->stat.byte_tx += urb->transfer_buffer_length;
1010         else
1011                 hdev->stat.err_tx++;
1012
1013 done:
1014         kfree(urb->setup_packet);
1015
1016         kfree_skb(skb);
1017 }
1018
1019 static int btusb_open(struct hci_dev *hdev)
1020 {
1021         struct btusb_data *data = hci_get_drvdata(hdev);
1022         int err;
1023
1024         BT_DBG("%s", hdev->name);
1025
1026         /* Patching USB firmware files prior to starting any URBs of HCI path
1027          * It is more safe to use USB bulk channel for downloading USB patch
1028          */
1029         if (data->setup_on_usb) {
1030                 err = data->setup_on_usb(hdev);
1031                 if (err < 0)
1032                         return err;
1033         }
1034
1035         err = usb_autopm_get_interface(data->intf);
1036         if (err < 0)
1037                 return err;
1038
1039         data->intf->needs_remote_wakeup = 1;
1040
1041         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
1042                 goto done;
1043
1044         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
1045         if (err < 0)
1046                 goto failed;
1047
1048         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1049         if (err < 0) {
1050                 usb_kill_anchored_urbs(&data->intr_anchor);
1051                 goto failed;
1052         }
1053
1054         set_bit(BTUSB_BULK_RUNNING, &data->flags);
1055         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1056
1057         if (data->diag) {
1058                 if (!btusb_submit_diag_urb(hdev, GFP_KERNEL))
1059                         set_bit(BTUSB_DIAG_RUNNING, &data->flags);
1060         }
1061
1062 done:
1063         usb_autopm_put_interface(data->intf);
1064         return 0;
1065
1066 failed:
1067         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1068         usb_autopm_put_interface(data->intf);
1069         return err;
1070 }
1071
1072 static void btusb_stop_traffic(struct btusb_data *data)
1073 {
1074         usb_kill_anchored_urbs(&data->intr_anchor);
1075         usb_kill_anchored_urbs(&data->bulk_anchor);
1076         usb_kill_anchored_urbs(&data->isoc_anchor);
1077         usb_kill_anchored_urbs(&data->diag_anchor);
1078 }
1079
1080 static int btusb_close(struct hci_dev *hdev)
1081 {
1082         struct btusb_data *data = hci_get_drvdata(hdev);
1083         int err;
1084
1085         BT_DBG("%s", hdev->name);
1086
1087         cancel_work_sync(&data->work);
1088         cancel_work_sync(&data->waker);
1089
1090         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1091         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1092         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1093         clear_bit(BTUSB_DIAG_RUNNING, &data->flags);
1094
1095         btusb_stop_traffic(data);
1096         btusb_free_frags(data);
1097
1098         err = usb_autopm_get_interface(data->intf);
1099         if (err < 0)
1100                 goto failed;
1101
1102         data->intf->needs_remote_wakeup = 0;
1103         usb_autopm_put_interface(data->intf);
1104
1105 failed:
1106         usb_scuttle_anchored_urbs(&data->deferred);
1107         return 0;
1108 }
1109
1110 static int btusb_flush(struct hci_dev *hdev)
1111 {
1112         struct btusb_data *data = hci_get_drvdata(hdev);
1113
1114         BT_DBG("%s", hdev->name);
1115
1116         usb_kill_anchored_urbs(&data->tx_anchor);
1117         btusb_free_frags(data);
1118
1119         return 0;
1120 }
1121
1122 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
1123 {
1124         struct btusb_data *data = hci_get_drvdata(hdev);
1125         struct usb_ctrlrequest *dr;
1126         struct urb *urb;
1127         unsigned int pipe;
1128
1129         urb = usb_alloc_urb(0, GFP_KERNEL);
1130         if (!urb)
1131                 return ERR_PTR(-ENOMEM);
1132
1133         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
1134         if (!dr) {
1135                 usb_free_urb(urb);
1136                 return ERR_PTR(-ENOMEM);
1137         }
1138
1139         dr->bRequestType = data->cmdreq_type;
1140         dr->bRequest     = data->cmdreq;
1141         dr->wIndex       = 0;
1142         dr->wValue       = 0;
1143         dr->wLength      = __cpu_to_le16(skb->len);
1144
1145         pipe = usb_sndctrlpipe(data->udev, 0x00);
1146
1147         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
1148                              skb->data, skb->len, btusb_tx_complete, skb);
1149
1150         skb->dev = (void *)hdev;
1151
1152         return urb;
1153 }
1154
1155 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
1156 {
1157         struct btusb_data *data = hci_get_drvdata(hdev);
1158         struct urb *urb;
1159         unsigned int pipe;
1160
1161         if (!data->bulk_tx_ep)
1162                 return ERR_PTR(-ENODEV);
1163
1164         urb = usb_alloc_urb(0, GFP_KERNEL);
1165         if (!urb)
1166                 return ERR_PTR(-ENOMEM);
1167
1168         pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1169
1170         usb_fill_bulk_urb(urb, data->udev, pipe,
1171                           skb->data, skb->len, btusb_tx_complete, skb);
1172
1173         skb->dev = (void *)hdev;
1174
1175         return urb;
1176 }
1177
1178 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1179 {
1180         struct btusb_data *data = hci_get_drvdata(hdev);
1181         struct urb *urb;
1182         unsigned int pipe;
1183
1184         if (!data->isoc_tx_ep)
1185                 return ERR_PTR(-ENODEV);
1186
1187         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1188         if (!urb)
1189                 return ERR_PTR(-ENOMEM);
1190
1191         pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1192
1193         usb_fill_int_urb(urb, data->udev, pipe,
1194                          skb->data, skb->len, btusb_isoc_tx_complete,
1195                          skb, data->isoc_tx_ep->bInterval);
1196
1197         urb->transfer_flags  = URB_ISO_ASAP;
1198
1199         __fill_isoc_descriptor(urb, skb->len,
1200                                le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1201
1202         skb->dev = (void *)hdev;
1203
1204         return urb;
1205 }
1206
1207 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1208 {
1209         struct btusb_data *data = hci_get_drvdata(hdev);
1210         int err;
1211
1212         usb_anchor_urb(urb, &data->tx_anchor);
1213
1214         err = usb_submit_urb(urb, GFP_KERNEL);
1215         if (err < 0) {
1216                 if (err != -EPERM && err != -ENODEV)
1217                         BT_ERR("%s urb %p submission failed (%d)",
1218                                hdev->name, urb, -err);
1219                 kfree(urb->setup_packet);
1220                 usb_unanchor_urb(urb);
1221         } else {
1222                 usb_mark_last_busy(data->udev);
1223         }
1224
1225         usb_free_urb(urb);
1226         return err;
1227 }
1228
1229 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1230 {
1231         struct btusb_data *data = hci_get_drvdata(hdev);
1232         unsigned long flags;
1233         bool suspending;
1234
1235         spin_lock_irqsave(&data->txlock, flags);
1236         suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1237         if (!suspending)
1238                 data->tx_in_flight++;
1239         spin_unlock_irqrestore(&data->txlock, flags);
1240
1241         if (!suspending)
1242                 return submit_tx_urb(hdev, urb);
1243
1244         usb_anchor_urb(urb, &data->deferred);
1245         schedule_work(&data->waker);
1246
1247         usb_free_urb(urb);
1248         return 0;
1249 }
1250
1251 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1252 {
1253         struct urb *urb;
1254
1255         BT_DBG("%s", hdev->name);
1256
1257         switch (bt_cb(skb)->pkt_type) {
1258         case HCI_COMMAND_PKT:
1259                 urb = alloc_ctrl_urb(hdev, skb);
1260                 if (IS_ERR(urb))
1261                         return PTR_ERR(urb);
1262
1263                 hdev->stat.cmd_tx++;
1264                 return submit_or_queue_tx_urb(hdev, urb);
1265
1266         case HCI_ACLDATA_PKT:
1267                 urb = alloc_bulk_urb(hdev, skb);
1268                 if (IS_ERR(urb))
1269                         return PTR_ERR(urb);
1270
1271                 hdev->stat.acl_tx++;
1272                 return submit_or_queue_tx_urb(hdev, urb);
1273
1274         case HCI_SCODATA_PKT:
1275                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1276                         return -ENODEV;
1277
1278                 urb = alloc_isoc_urb(hdev, skb);
1279                 if (IS_ERR(urb))
1280                         return PTR_ERR(urb);
1281
1282                 hdev->stat.sco_tx++;
1283                 return submit_tx_urb(hdev, urb);
1284         }
1285
1286         return -EILSEQ;
1287 }
1288
1289 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1290 {
1291         struct btusb_data *data = hci_get_drvdata(hdev);
1292
1293         BT_DBG("%s evt %d", hdev->name, evt);
1294
1295         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1296                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1297                 schedule_work(&data->work);
1298         }
1299 }
1300
1301 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1302 {
1303         struct btusb_data *data = hci_get_drvdata(hdev);
1304         struct usb_interface *intf = data->isoc;
1305         struct usb_endpoint_descriptor *ep_desc;
1306         int i, err;
1307
1308         if (!data->isoc)
1309                 return -ENODEV;
1310
1311         err = usb_set_interface(data->udev, 1, altsetting);
1312         if (err < 0) {
1313                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
1314                 return err;
1315         }
1316
1317         data->isoc_altsetting = altsetting;
1318
1319         data->isoc_tx_ep = NULL;
1320         data->isoc_rx_ep = NULL;
1321
1322         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1323                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1324
1325                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1326                         data->isoc_tx_ep = ep_desc;
1327                         continue;
1328                 }
1329
1330                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1331                         data->isoc_rx_ep = ep_desc;
1332                         continue;
1333                 }
1334         }
1335
1336         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1337                 BT_ERR("%s invalid SCO descriptors", hdev->name);
1338                 return -ENODEV;
1339         }
1340
1341         return 0;
1342 }
1343
1344 static void btusb_work(struct work_struct *work)
1345 {
1346         struct btusb_data *data = container_of(work, struct btusb_data, work);
1347         struct hci_dev *hdev = data->hdev;
1348         int new_alts;
1349         int err;
1350
1351         if (data->sco_num > 0) {
1352                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1353                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1354                         if (err < 0) {
1355                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1356                                 usb_kill_anchored_urbs(&data->isoc_anchor);
1357                                 return;
1358                         }
1359
1360                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1361                 }
1362
1363                 if (hdev->voice_setting & 0x0020) {
1364                         static const int alts[3] = { 2, 4, 5 };
1365
1366                         new_alts = alts[data->sco_num - 1];
1367                 } else {
1368                         new_alts = data->sco_num;
1369                 }
1370
1371                 if (data->isoc_altsetting != new_alts) {
1372                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1373                         usb_kill_anchored_urbs(&data->isoc_anchor);
1374
1375                         /* When isochronous alternate setting needs to be
1376                          * changed, because SCO connection has been added
1377                          * or removed, a packet fragment may be left in the
1378                          * reassembling state. This could lead to wrongly
1379                          * assembled fragments.
1380                          *
1381                          * Clear outstanding fragment when selecting a new
1382                          * alternate setting.
1383                          */
1384                         spin_lock(&data->rxlock);
1385                         kfree_skb(data->sco_skb);
1386                         data->sco_skb = NULL;
1387                         spin_unlock(&data->rxlock);
1388
1389                         if (__set_isoc_interface(hdev, new_alts) < 0)
1390                                 return;
1391                 }
1392
1393                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1394                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1395                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1396                         else
1397                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1398                 }
1399         } else {
1400                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1401                 usb_kill_anchored_urbs(&data->isoc_anchor);
1402
1403                 __set_isoc_interface(hdev, 0);
1404                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1405                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1406         }
1407 }
1408
1409 static void btusb_waker(struct work_struct *work)
1410 {
1411         struct btusb_data *data = container_of(work, struct btusb_data, waker);
1412         int err;
1413
1414         err = usb_autopm_get_interface(data->intf);
1415         if (err < 0)
1416                 return;
1417
1418         usb_autopm_put_interface(data->intf);
1419 }
1420
1421 static int btusb_setup_bcm92035(struct hci_dev *hdev)
1422 {
1423         struct sk_buff *skb;
1424         u8 val = 0x00;
1425
1426         BT_DBG("%s", hdev->name);
1427
1428         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1429         if (IS_ERR(skb))
1430                 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
1431         else
1432                 kfree_skb(skb);
1433
1434         return 0;
1435 }
1436
1437 static int btusb_setup_csr(struct hci_dev *hdev)
1438 {
1439         struct hci_rp_read_local_version *rp;
1440         struct sk_buff *skb;
1441
1442         BT_DBG("%s", hdev->name);
1443
1444         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1445                              HCI_INIT_TIMEOUT);
1446         if (IS_ERR(skb)) {
1447                 int err = PTR_ERR(skb);
1448                 BT_ERR("%s: CSR: Local version failed (%d)", hdev->name, err);
1449                 return err;
1450         }
1451
1452         if (skb->len != sizeof(struct hci_rp_read_local_version)) {
1453                 BT_ERR("%s: CSR: Local version length mismatch", hdev->name);
1454                 kfree_skb(skb);
1455                 return -EIO;
1456         }
1457
1458         rp = (struct hci_rp_read_local_version *)skb->data;
1459
1460         /* Detect controllers which aren't real CSR ones. */
1461         if (le16_to_cpu(rp->manufacturer) != 10 ||
1462             le16_to_cpu(rp->lmp_subver) == 0x0c5c) {
1463                 /* Clear the reset quirk since this is not an actual
1464                  * early Bluetooth 1.1 device from CSR.
1465                  */
1466                 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1467
1468                 /* These fake CSR controllers have all a broken
1469                  * stored link key handling and so just disable it.
1470                  */
1471                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
1472         }
1473
1474         kfree_skb(skb);
1475
1476         return 0;
1477 }
1478
1479 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1480                                                        struct intel_version *ver)
1481 {
1482         const struct firmware *fw;
1483         char fwname[64];
1484         int ret;
1485
1486         snprintf(fwname, sizeof(fwname),
1487                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1488                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
1489                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1490                  ver->fw_build_ww, ver->fw_build_yy);
1491
1492         ret = request_firmware(&fw, fwname, &hdev->dev);
1493         if (ret < 0) {
1494                 if (ret == -EINVAL) {
1495                         BT_ERR("%s Intel firmware file request failed (%d)",
1496                                hdev->name, ret);
1497                         return NULL;
1498                 }
1499
1500                 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1501                        hdev->name, fwname, ret);
1502
1503                 /* If the correct firmware patch file is not found, use the
1504                  * default firmware patch file instead
1505                  */
1506                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1507                          ver->hw_platform, ver->hw_variant);
1508                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1509                         BT_ERR("%s failed to open default Intel fw file: %s",
1510                                hdev->name, fwname);
1511                         return NULL;
1512                 }
1513         }
1514
1515         BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1516
1517         return fw;
1518 }
1519
1520 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1521                                       const struct firmware *fw,
1522                                       const u8 **fw_ptr, int *disable_patch)
1523 {
1524         struct sk_buff *skb;
1525         struct hci_command_hdr *cmd;
1526         const u8 *cmd_param;
1527         struct hci_event_hdr *evt = NULL;
1528         const u8 *evt_param = NULL;
1529         int remain = fw->size - (*fw_ptr - fw->data);
1530
1531         /* The first byte indicates the types of the patch command or event.
1532          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1533          * in the current firmware buffer doesn't start with 0x01 or
1534          * the size of remain buffer is smaller than HCI command header,
1535          * the firmware file is corrupted and it should stop the patching
1536          * process.
1537          */
1538         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1539                 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1540                 return -EINVAL;
1541         }
1542         (*fw_ptr)++;
1543         remain--;
1544
1545         cmd = (struct hci_command_hdr *)(*fw_ptr);
1546         *fw_ptr += sizeof(*cmd);
1547         remain -= sizeof(*cmd);
1548
1549         /* Ensure that the remain firmware data is long enough than the length
1550          * of command parameter. If not, the firmware file is corrupted.
1551          */
1552         if (remain < cmd->plen) {
1553                 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1554                 return -EFAULT;
1555         }
1556
1557         /* If there is a command that loads a patch in the firmware
1558          * file, then enable the patch upon success, otherwise just
1559          * disable the manufacturer mode, for example patch activation
1560          * is not required when the default firmware patch file is used
1561          * because there are no patch data to load.
1562          */
1563         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1564                 *disable_patch = 0;
1565
1566         cmd_param = *fw_ptr;
1567         *fw_ptr += cmd->plen;
1568         remain -= cmd->plen;
1569
1570         /* This reads the expected events when the above command is sent to the
1571          * device. Some vendor commands expects more than one events, for
1572          * example command status event followed by vendor specific event.
1573          * For this case, it only keeps the last expected event. so the command
1574          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1575          * last expected event.
1576          */
1577         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1578                 (*fw_ptr)++;
1579                 remain--;
1580
1581                 evt = (struct hci_event_hdr *)(*fw_ptr);
1582                 *fw_ptr += sizeof(*evt);
1583                 remain -= sizeof(*evt);
1584
1585                 if (remain < evt->plen) {
1586                         BT_ERR("%s Intel fw corrupted: invalid evt len",
1587                                hdev->name);
1588                         return -EFAULT;
1589                 }
1590
1591                 evt_param = *fw_ptr;
1592                 *fw_ptr += evt->plen;
1593                 remain -= evt->plen;
1594         }
1595
1596         /* Every HCI commands in the firmware file has its correspond event.
1597          * If event is not found or remain is smaller than zero, the firmware
1598          * file is corrupted.
1599          */
1600         if (!evt || !evt_param || remain < 0) {
1601                 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1602                 return -EFAULT;
1603         }
1604
1605         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1606                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1607         if (IS_ERR(skb)) {
1608                 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1609                        hdev->name, cmd->opcode, PTR_ERR(skb));
1610                 return PTR_ERR(skb);
1611         }
1612
1613         /* It ensures that the returned event matches the event data read from
1614          * the firmware file. At fist, it checks the length and then
1615          * the contents of the event.
1616          */
1617         if (skb->len != evt->plen) {
1618                 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1619                        le16_to_cpu(cmd->opcode));
1620                 kfree_skb(skb);
1621                 return -EFAULT;
1622         }
1623
1624         if (memcmp(skb->data, evt_param, evt->plen)) {
1625                 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1626                        hdev->name, le16_to_cpu(cmd->opcode));
1627                 kfree_skb(skb);
1628                 return -EFAULT;
1629         }
1630         kfree_skb(skb);
1631
1632         return 0;
1633 }
1634
1635 static int btusb_setup_intel(struct hci_dev *hdev)
1636 {
1637         struct sk_buff *skb;
1638         const struct firmware *fw;
1639         const u8 *fw_ptr;
1640         int disable_patch;
1641         struct intel_version *ver;
1642
1643         const u8 mfg_enable[] = { 0x01, 0x00 };
1644         const u8 mfg_disable[] = { 0x00, 0x00 };
1645         const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
1646         const u8 mfg_reset_activate[] = { 0x00, 0x02 };
1647
1648         BT_DBG("%s", hdev->name);
1649
1650         /* The controller has a bug with the first HCI command sent to it
1651          * returning number of completed commands as zero. This would stall the
1652          * command processing in the Bluetooth core.
1653          *
1654          * As a workaround, send HCI Reset command first which will reset the
1655          * number of completed commands and allow normal command processing
1656          * from now on.
1657          */
1658         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1659         if (IS_ERR(skb)) {
1660                 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1661                        hdev->name, PTR_ERR(skb));
1662                 return PTR_ERR(skb);
1663         }
1664         kfree_skb(skb);
1665
1666         /* Read Intel specific controller version first to allow selection of
1667          * which firmware file to load.
1668          *
1669          * The returned information are hardware variant and revision plus
1670          * firmware variant, revision and build number.
1671          */
1672         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1673         if (IS_ERR(skb)) {
1674                 BT_ERR("%s reading Intel fw version command failed (%ld)",
1675                        hdev->name, PTR_ERR(skb));
1676                 return PTR_ERR(skb);
1677         }
1678
1679         if (skb->len != sizeof(*ver)) {
1680                 BT_ERR("%s Intel version event length mismatch", hdev->name);
1681                 kfree_skb(skb);
1682                 return -EIO;
1683         }
1684
1685         ver = (struct intel_version *)skb->data;
1686
1687         BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1688                 hdev->name, ver->hw_platform, ver->hw_variant,
1689                 ver->hw_revision, ver->fw_variant,  ver->fw_revision,
1690                 ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
1691                 ver->fw_patch_num);
1692
1693         /* fw_patch_num indicates the version of patch the device currently
1694          * have. If there is no patch data in the device, it is always 0x00.
1695          * So, if it is other than 0x00, no need to patch the device again.
1696          */
1697         if (ver->fw_patch_num) {
1698                 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1699                         hdev->name, ver->fw_patch_num);
1700                 kfree_skb(skb);
1701                 btintel_check_bdaddr(hdev);
1702                 return 0;
1703         }
1704
1705         /* Opens the firmware patch file based on the firmware version read
1706          * from the controller. If it fails to open the matching firmware
1707          * patch file, it tries to open the default firmware patch file.
1708          * If no patch file is found, allow the device to operate without
1709          * a patch.
1710          */
1711         fw = btusb_setup_intel_get_fw(hdev, ver);
1712         if (!fw) {
1713                 kfree_skb(skb);
1714                 btintel_check_bdaddr(hdev);
1715                 return 0;
1716         }
1717         fw_ptr = fw->data;
1718
1719         kfree_skb(skb);
1720
1721         /* This Intel specific command enables the manufacturer mode of the
1722          * controller.
1723          *
1724          * Only while this mode is enabled, the driver can download the
1725          * firmware patch data and configuration parameters.
1726          */
1727         skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
1728         if (IS_ERR(skb)) {
1729                 BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
1730                        hdev->name, PTR_ERR(skb));
1731                 release_firmware(fw);
1732                 return PTR_ERR(skb);
1733         }
1734
1735         kfree_skb(skb);
1736
1737         disable_patch = 1;
1738
1739         /* The firmware data file consists of list of Intel specific HCI
1740          * commands and its expected events. The first byte indicates the
1741          * type of the message, either HCI command or HCI event.
1742          *
1743          * It reads the command and its expected event from the firmware file,
1744          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1745          * the returned event is compared with the event read from the firmware
1746          * file and it will continue until all the messages are downloaded to
1747          * the controller.
1748          *
1749          * Once the firmware patching is completed successfully,
1750          * the manufacturer mode is disabled with reset and activating the
1751          * downloaded patch.
1752          *
1753          * If the firmware patching fails, the manufacturer mode is
1754          * disabled with reset and deactivating the patch.
1755          *
1756          * If the default patch file is used, no reset is done when disabling
1757          * the manufacturer.
1758          */
1759         while (fw->size > fw_ptr - fw->data) {
1760                 int ret;
1761
1762                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1763                                                  &disable_patch);
1764                 if (ret < 0)
1765                         goto exit_mfg_deactivate;
1766         }
1767
1768         release_firmware(fw);
1769
1770         if (disable_patch)
1771                 goto exit_mfg_disable;
1772
1773         /* Patching completed successfully and disable the manufacturer mode
1774          * with reset and activate the downloaded firmware patches.
1775          */
1776         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
1777                              mfg_reset_activate, HCI_INIT_TIMEOUT);
1778         if (IS_ERR(skb)) {
1779                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1780                        hdev->name, PTR_ERR(skb));
1781                 return PTR_ERR(skb);
1782         }
1783         kfree_skb(skb);
1784
1785         BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1786                 hdev->name);
1787
1788         btintel_check_bdaddr(hdev);
1789         return 0;
1790
1791 exit_mfg_disable:
1792         /* Disable the manufacturer mode without reset */
1793         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
1794                              HCI_INIT_TIMEOUT);
1795         if (IS_ERR(skb)) {
1796                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1797                        hdev->name, PTR_ERR(skb));
1798                 return PTR_ERR(skb);
1799         }
1800         kfree_skb(skb);
1801
1802         BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1803
1804         btintel_check_bdaddr(hdev);
1805         return 0;
1806
1807 exit_mfg_deactivate:
1808         release_firmware(fw);
1809
1810         /* Patching failed. Disable the manufacturer mode with reset and
1811          * deactivate the downloaded firmware patches.
1812          */
1813         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
1814                              mfg_reset_deactivate, HCI_INIT_TIMEOUT);
1815         if (IS_ERR(skb)) {
1816                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1817                        hdev->name, PTR_ERR(skb));
1818                 return PTR_ERR(skb);
1819         }
1820         kfree_skb(skb);
1821
1822         BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1823                 hdev->name);
1824
1825         btintel_check_bdaddr(hdev);
1826         return 0;
1827 }
1828
1829 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
1830 {
1831         struct sk_buff *skb;
1832         struct hci_event_hdr *hdr;
1833         struct hci_ev_cmd_complete *evt;
1834
1835         skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_ATOMIC);
1836         if (!skb)
1837                 return -ENOMEM;
1838
1839         hdr = (struct hci_event_hdr *)skb_put(skb, sizeof(*hdr));
1840         hdr->evt = HCI_EV_CMD_COMPLETE;
1841         hdr->plen = sizeof(*evt) + 1;
1842
1843         evt = (struct hci_ev_cmd_complete *)skb_put(skb, sizeof(*evt));
1844         evt->ncmd = 0x01;
1845         evt->opcode = cpu_to_le16(opcode);
1846
1847         *skb_put(skb, 1) = 0x00;
1848
1849         bt_cb(skb)->pkt_type = HCI_EVENT_PKT;
1850
1851         return hci_recv_frame(hdev, skb);
1852 }
1853
1854 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
1855                                  int count)
1856 {
1857         /* When the device is in bootloader mode, then it can send
1858          * events via the bulk endpoint. These events are treated the
1859          * same way as the ones received from the interrupt endpoint.
1860          */
1861         if (test_bit(BTUSB_BOOTLOADER, &data->flags))
1862                 return btusb_recv_intr(data, buffer, count);
1863
1864         return btusb_recv_bulk(data, buffer, count);
1865 }
1866
1867 static void btusb_intel_bootup(struct btusb_data *data, const void *ptr,
1868                                unsigned int len)
1869 {
1870         const struct intel_bootup *evt = ptr;
1871
1872         if (len != sizeof(*evt))
1873                 return;
1874
1875         if (test_and_clear_bit(BTUSB_BOOTING, &data->flags)) {
1876                 smp_mb__after_atomic();
1877                 wake_up_bit(&data->flags, BTUSB_BOOTING);
1878         }
1879 }
1880
1881 static void btusb_intel_secure_send_result(struct btusb_data *data,
1882                                            const void *ptr, unsigned int len)
1883 {
1884         const struct intel_secure_send_result *evt = ptr;
1885
1886         if (len != sizeof(*evt))
1887                 return;
1888
1889         if (evt->result)
1890                 set_bit(BTUSB_FIRMWARE_FAILED, &data->flags);
1891
1892         if (test_and_clear_bit(BTUSB_DOWNLOADING, &data->flags) &&
1893             test_bit(BTUSB_FIRMWARE_LOADED, &data->flags)) {
1894                 smp_mb__after_atomic();
1895                 wake_up_bit(&data->flags, BTUSB_DOWNLOADING);
1896         }
1897 }
1898
1899 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
1900 {
1901         struct btusb_data *data = hci_get_drvdata(hdev);
1902
1903         if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1904                 struct hci_event_hdr *hdr = (void *)skb->data;
1905
1906                 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
1907                     hdr->plen > 0) {
1908                         const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
1909                         unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
1910
1911                         switch (skb->data[2]) {
1912                         case 0x02:
1913                                 /* When switching to the operational firmware
1914                                  * the device sends a vendor specific event
1915                                  * indicating that the bootup completed.
1916                                  */
1917                                 btusb_intel_bootup(data, ptr, len);
1918                                 break;
1919                         case 0x06:
1920                                 /* When the firmware loading completes the
1921                                  * device sends out a vendor specific event
1922                                  * indicating the result of the firmware
1923                                  * loading.
1924                                  */
1925                                 btusb_intel_secure_send_result(data, ptr, len);
1926                                 break;
1927                         }
1928                 }
1929         }
1930
1931         return hci_recv_frame(hdev, skb);
1932 }
1933
1934 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
1935 {
1936         struct btusb_data *data = hci_get_drvdata(hdev);
1937         struct urb *urb;
1938
1939         BT_DBG("%s", hdev->name);
1940
1941         switch (bt_cb(skb)->pkt_type) {
1942         case HCI_COMMAND_PKT:
1943                 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1944                         struct hci_command_hdr *cmd = (void *)skb->data;
1945                         __u16 opcode = le16_to_cpu(cmd->opcode);
1946
1947                         /* When in bootloader mode and the command 0xfc09
1948                          * is received, it needs to be send down the
1949                          * bulk endpoint. So allocate a bulk URB instead.
1950                          */
1951                         if (opcode == 0xfc09)
1952                                 urb = alloc_bulk_urb(hdev, skb);
1953                         else
1954                                 urb = alloc_ctrl_urb(hdev, skb);
1955
1956                         /* When the 0xfc01 command is issued to boot into
1957                          * the operational firmware, it will actually not
1958                          * send a command complete event. To keep the flow
1959                          * control working inject that event here.
1960                          */
1961                         if (opcode == 0xfc01)
1962                                 inject_cmd_complete(hdev, opcode);
1963                 } else {
1964                         urb = alloc_ctrl_urb(hdev, skb);
1965                 }
1966                 if (IS_ERR(urb))
1967                         return PTR_ERR(urb);
1968
1969                 hdev->stat.cmd_tx++;
1970                 return submit_or_queue_tx_urb(hdev, urb);
1971
1972         case HCI_ACLDATA_PKT:
1973                 urb = alloc_bulk_urb(hdev, skb);
1974                 if (IS_ERR(urb))
1975                         return PTR_ERR(urb);
1976
1977                 hdev->stat.acl_tx++;
1978                 return submit_or_queue_tx_urb(hdev, urb);
1979
1980         case HCI_SCODATA_PKT:
1981                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1982                         return -ENODEV;
1983
1984                 urb = alloc_isoc_urb(hdev, skb);
1985                 if (IS_ERR(urb))
1986                         return PTR_ERR(urb);
1987
1988                 hdev->stat.sco_tx++;
1989                 return submit_tx_urb(hdev, urb);
1990         }
1991
1992         return -EILSEQ;
1993 }
1994
1995 static int btusb_setup_intel_new(struct hci_dev *hdev)
1996 {
1997         static const u8 reset_param[] = { 0x00, 0x01, 0x00, 0x01,
1998                                           0x00, 0x08, 0x04, 0x00 };
1999         struct btusb_data *data = hci_get_drvdata(hdev);
2000         struct sk_buff *skb;
2001         struct intel_version *ver;
2002         struct intel_boot_params *params;
2003         const struct firmware *fw;
2004         const u8 *fw_ptr;
2005         u32 frag_len;
2006         char fwname[64];
2007         ktime_t calltime, delta, rettime;
2008         unsigned long long duration;
2009         int err;
2010
2011         BT_DBG("%s", hdev->name);
2012
2013         calltime = ktime_get();
2014
2015         /* Read the Intel version information to determine if the device
2016          * is in bootloader mode or if it already has operational firmware
2017          * loaded.
2018          */
2019         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
2020         if (IS_ERR(skb)) {
2021                 BT_ERR("%s: Reading Intel version information failed (%ld)",
2022                        hdev->name, PTR_ERR(skb));
2023                 return PTR_ERR(skb);
2024         }
2025
2026         if (skb->len != sizeof(*ver)) {
2027                 BT_ERR("%s: Intel version event size mismatch", hdev->name);
2028                 kfree_skb(skb);
2029                 return -EILSEQ;
2030         }
2031
2032         ver = (struct intel_version *)skb->data;
2033
2034         /* The hardware platform number has a fixed value of 0x37 and
2035          * for now only accept this single value.
2036          */
2037         if (ver->hw_platform != 0x37) {
2038                 BT_ERR("%s: Unsupported Intel hardware platform (%u)",
2039                        hdev->name, ver->hw_platform);
2040                 kfree_skb(skb);
2041                 return -EINVAL;
2042         }
2043
2044         /* At the moment only the hardware variant iBT 3.0 (LnP/SfP) is
2045          * supported by this firmware loading method. This check has been
2046          * put in place to ensure correct forward compatibility options
2047          * when newer hardware variants come along.
2048          */
2049         if (ver->hw_variant != 0x0b) {
2050                 BT_ERR("%s: Unsupported Intel hardware variant (%u)",
2051                        hdev->name, ver->hw_variant);
2052                 kfree_skb(skb);
2053                 return -EINVAL;
2054         }
2055
2056         btintel_version_info(hdev, ver);
2057
2058         /* The firmware variant determines if the device is in bootloader
2059          * mode or is running operational firmware. The value 0x06 identifies
2060          * the bootloader and the value 0x23 identifies the operational
2061          * firmware.
2062          *
2063          * When the operational firmware is already present, then only
2064          * the check for valid Bluetooth device address is needed. This
2065          * determines if the device will be added as configured or
2066          * unconfigured controller.
2067          *
2068          * It is not possible to use the Secure Boot Parameters in this
2069          * case since that command is only available in bootloader mode.
2070          */
2071         if (ver->fw_variant == 0x23) {
2072                 kfree_skb(skb);
2073                 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2074                 btintel_check_bdaddr(hdev);
2075                 return 0;
2076         }
2077
2078         /* If the device is not in bootloader mode, then the only possible
2079          * choice is to return an error and abort the device initialization.
2080          */
2081         if (ver->fw_variant != 0x06) {
2082                 BT_ERR("%s: Unsupported Intel firmware variant (%u)",
2083                        hdev->name, ver->fw_variant);
2084                 kfree_skb(skb);
2085                 return -ENODEV;
2086         }
2087
2088         kfree_skb(skb);
2089
2090         /* Read the secure boot parameters to identify the operating
2091          * details of the bootloader.
2092          */
2093         skb = __hci_cmd_sync(hdev, 0xfc0d, 0, NULL, HCI_INIT_TIMEOUT);
2094         if (IS_ERR(skb)) {
2095                 BT_ERR("%s: Reading Intel boot parameters failed (%ld)",
2096                        hdev->name, PTR_ERR(skb));
2097                 return PTR_ERR(skb);
2098         }
2099
2100         if (skb->len != sizeof(*params)) {
2101                 BT_ERR("%s: Intel boot parameters size mismatch", hdev->name);
2102                 kfree_skb(skb);
2103                 return -EILSEQ;
2104         }
2105
2106         params = (struct intel_boot_params *)skb->data;
2107
2108         BT_INFO("%s: Device revision is %u", hdev->name,
2109                 le16_to_cpu(params->dev_revid));
2110
2111         BT_INFO("%s: Secure boot is %s", hdev->name,
2112                 params->secure_boot ? "enabled" : "disabled");
2113
2114         BT_INFO("%s: OTP lock is %s", hdev->name,
2115                 params->otp_lock ? "enabled" : "disabled");
2116
2117         BT_INFO("%s: API lock is %s", hdev->name,
2118                 params->api_lock ? "enabled" : "disabled");
2119
2120         BT_INFO("%s: Debug lock is %s", hdev->name,
2121                 params->debug_lock ? "enabled" : "disabled");
2122
2123         BT_INFO("%s: Minimum firmware build %u week %u %u", hdev->name,
2124                 params->min_fw_build_nn, params->min_fw_build_cw,
2125                 2000 + params->min_fw_build_yy);
2126
2127         /* It is required that every single firmware fragment is acknowledged
2128          * with a command complete event. If the boot parameters indicate
2129          * that this bootloader does not send them, then abort the setup.
2130          */
2131         if (params->limited_cce != 0x00) {
2132                 BT_ERR("%s: Unsupported Intel firmware loading method (%u)",
2133                        hdev->name, params->limited_cce);
2134                 kfree_skb(skb);
2135                 return -EINVAL;
2136         }
2137
2138         /* If the OTP has no valid Bluetooth device address, then there will
2139          * also be no valid address for the operational firmware.
2140          */
2141         if (!bacmp(&params->otp_bdaddr, BDADDR_ANY)) {
2142                 BT_INFO("%s: No device address configured", hdev->name);
2143                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2144         }
2145
2146         /* With this Intel bootloader only the hardware variant and device
2147          * revision information are used to select the right firmware.
2148          *
2149          * Currently this bootloader support is limited to hardware variant
2150          * iBT 3.0 (LnP/SfP) which is identified by the value 11 (0x0b).
2151          */
2152         snprintf(fwname, sizeof(fwname), "intel/ibt-11-%u.sfi",
2153                  le16_to_cpu(params->dev_revid));
2154
2155         err = request_firmware(&fw, fwname, &hdev->dev);
2156         if (err < 0) {
2157                 BT_ERR("%s: Failed to load Intel firmware file (%d)",
2158                        hdev->name, err);
2159                 kfree_skb(skb);
2160                 return err;
2161         }
2162
2163         BT_INFO("%s: Found device firmware: %s", hdev->name, fwname);
2164
2165         /* Save the DDC file name for later use to apply once the firmware
2166          * downloading is done.
2167          */
2168         snprintf(fwname, sizeof(fwname), "intel/ibt-11-%u.ddc",
2169                  le16_to_cpu(params->dev_revid));
2170
2171         kfree_skb(skb);
2172
2173         if (fw->size < 644) {
2174                 BT_ERR("%s: Invalid size of firmware file (%zu)",
2175                        hdev->name, fw->size);
2176                 err = -EBADF;
2177                 goto done;
2178         }
2179
2180         set_bit(BTUSB_DOWNLOADING, &data->flags);
2181
2182         /* Start the firmware download transaction with the Init fragment
2183          * represented by the 128 bytes of CSS header.
2184          */
2185         err = btintel_secure_send(hdev, 0x00, 128, fw->data);
2186         if (err < 0) {
2187                 BT_ERR("%s: Failed to send firmware header (%d)",
2188                        hdev->name, err);
2189                 goto done;
2190         }
2191
2192         /* Send the 256 bytes of public key information from the firmware
2193          * as the PKey fragment.
2194          */
2195         err = btintel_secure_send(hdev, 0x03, 256, fw->data + 128);
2196         if (err < 0) {
2197                 BT_ERR("%s: Failed to send firmware public key (%d)",
2198                        hdev->name, err);
2199                 goto done;
2200         }
2201
2202         /* Send the 256 bytes of signature information from the firmware
2203          * as the Sign fragment.
2204          */
2205         err = btintel_secure_send(hdev, 0x02, 256, fw->data + 388);
2206         if (err < 0) {
2207                 BT_ERR("%s: Failed to send firmware signature (%d)",
2208                        hdev->name, err);
2209                 goto done;
2210         }
2211
2212         fw_ptr = fw->data + 644;
2213         frag_len = 0;
2214
2215         while (fw_ptr - fw->data < fw->size) {
2216                 struct hci_command_hdr *cmd = (void *)(fw_ptr + frag_len);
2217
2218                 frag_len += sizeof(*cmd) + cmd->plen;
2219
2220                 /* The parameter length of the secure send command requires
2221                  * a 4 byte alignment. It happens so that the firmware file
2222                  * contains proper Intel_NOP commands to align the fragments
2223                  * as needed.
2224                  *
2225                  * Send set of commands with 4 byte alignment from the
2226                  * firmware data buffer as a single Data fragement.
2227                  */
2228                 if (!(frag_len % 4)) {
2229                         err = btintel_secure_send(hdev, 0x01, frag_len, fw_ptr);
2230                         if (err < 0) {
2231                                 BT_ERR("%s: Failed to send firmware data (%d)",
2232                                        hdev->name, err);
2233                                 goto done;
2234                         }
2235
2236                         fw_ptr += frag_len;
2237                         frag_len = 0;
2238                 }
2239         }
2240
2241         set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2242
2243         BT_INFO("%s: Waiting for firmware download to complete", hdev->name);
2244
2245         /* Before switching the device into operational mode and with that
2246          * booting the loaded firmware, wait for the bootloader notification
2247          * that all fragments have been successfully received.
2248          *
2249          * When the event processing receives the notification, then the
2250          * BTUSB_DOWNLOADING flag will be cleared.
2251          *
2252          * The firmware loading should not take longer than 5 seconds
2253          * and thus just timeout if that happens and fail the setup
2254          * of this device.
2255          */
2256         err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
2257                                   TASK_INTERRUPTIBLE,
2258                                   msecs_to_jiffies(5000));
2259         if (err == 1) {
2260                 BT_ERR("%s: Firmware loading interrupted", hdev->name);
2261                 err = -EINTR;
2262                 goto done;
2263         }
2264
2265         if (err) {
2266                 BT_ERR("%s: Firmware loading timeout", hdev->name);
2267                 err = -ETIMEDOUT;
2268                 goto done;
2269         }
2270
2271         if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) {
2272                 BT_ERR("%s: Firmware loading failed", hdev->name);
2273                 err = -ENOEXEC;
2274                 goto done;
2275         }
2276
2277         rettime = ktime_get();
2278         delta = ktime_sub(rettime, calltime);
2279         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2280
2281         BT_INFO("%s: Firmware loaded in %llu usecs", hdev->name, duration);
2282
2283 done:
2284         release_firmware(fw);
2285
2286         if (err < 0)
2287                 return err;
2288
2289         calltime = ktime_get();
2290
2291         set_bit(BTUSB_BOOTING, &data->flags);
2292
2293         skb = __hci_cmd_sync(hdev, 0xfc01, sizeof(reset_param), reset_param,
2294                              HCI_INIT_TIMEOUT);
2295         if (IS_ERR(skb))
2296                 return PTR_ERR(skb);
2297
2298         kfree_skb(skb);
2299
2300         /* The bootloader will not indicate when the device is ready. This
2301          * is done by the operational firmware sending bootup notification.
2302          *
2303          * Booting into operational firmware should not take longer than
2304          * 1 second. However if that happens, then just fail the setup
2305          * since something went wrong.
2306          */
2307         BT_INFO("%s: Waiting for device to boot", hdev->name);
2308
2309         err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING,
2310                                   TASK_INTERRUPTIBLE,
2311                                   msecs_to_jiffies(1000));
2312
2313         if (err == 1) {
2314                 BT_ERR("%s: Device boot interrupted", hdev->name);
2315                 return -EINTR;
2316         }
2317
2318         if (err) {
2319                 BT_ERR("%s: Device boot timeout", hdev->name);
2320                 return -ETIMEDOUT;
2321         }
2322
2323         rettime = ktime_get();
2324         delta = ktime_sub(rettime, calltime);
2325         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2326
2327         BT_INFO("%s: Device booted in %llu usecs", hdev->name, duration);
2328
2329         clear_bit(BTUSB_BOOTLOADER, &data->flags);
2330
2331         /* Once the device is running in operational mode, it needs to apply
2332          * the device configuration (DDC) parameters.
2333          *
2334          * The device can work without DDC parameters, so even if it fails
2335          * to load the file, no need to fail the setup.
2336          */
2337         btintel_load_ddc_config(hdev, fwname);
2338
2339         return 0;
2340 }
2341
2342 static int btusb_shutdown_intel(struct hci_dev *hdev)
2343 {
2344         struct sk_buff *skb;
2345         long ret;
2346
2347         /* Some platforms have an issue with BT LED when the interface is
2348          * down or BT radio is turned off, which takes 5 seconds to BT LED
2349          * goes off. This command turns off the BT LED immediately.
2350          */
2351         skb = __hci_cmd_sync(hdev, 0xfc3f, 0, NULL, HCI_INIT_TIMEOUT);
2352         if (IS_ERR(skb)) {
2353                 ret = PTR_ERR(skb);
2354                 BT_ERR("%s: turning off Intel device LED failed (%ld)",
2355                        hdev->name, ret);
2356                 return ret;
2357         }
2358         kfree_skb(skb);
2359
2360         return 0;
2361 }
2362
2363 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
2364                                     const bdaddr_t *bdaddr)
2365 {
2366         struct sk_buff *skb;
2367         u8 buf[8];
2368         long ret;
2369
2370         buf[0] = 0xfe;
2371         buf[1] = sizeof(bdaddr_t);
2372         memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
2373
2374         skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2375         if (IS_ERR(skb)) {
2376                 ret = PTR_ERR(skb);
2377                 BT_ERR("%s: changing Marvell device address failed (%ld)",
2378                        hdev->name, ret);
2379                 return ret;
2380         }
2381         kfree_skb(skb);
2382
2383         return 0;
2384 }
2385
2386 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
2387                                     const bdaddr_t *bdaddr)
2388 {
2389         struct sk_buff *skb;
2390         u8 buf[10];
2391         long ret;
2392
2393         buf[0] = 0x01;
2394         buf[1] = 0x01;
2395         buf[2] = 0x00;
2396         buf[3] = sizeof(bdaddr_t);
2397         memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
2398
2399         skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2400         if (IS_ERR(skb)) {
2401                 ret = PTR_ERR(skb);
2402                 BT_ERR("%s: Change address command failed (%ld)",
2403                        hdev->name, ret);
2404                 return ret;
2405         }
2406         kfree_skb(skb);
2407
2408         return 0;
2409 }
2410
2411 #define QCA_DFU_PACKET_LEN      4096
2412
2413 #define QCA_GET_TARGET_VERSION  0x09
2414 #define QCA_CHECK_STATUS        0x05
2415 #define QCA_DFU_DOWNLOAD        0x01
2416
2417 #define QCA_SYSCFG_UPDATED      0x40
2418 #define QCA_PATCH_UPDATED       0x80
2419 #define QCA_DFU_TIMEOUT         3000
2420
2421 struct qca_version {
2422         __le32  rom_version;
2423         __le32  patch_version;
2424         __le32  ram_version;
2425         __le32  ref_clock;
2426         __u8    reserved[4];
2427 } __packed;
2428
2429 struct qca_rampatch_version {
2430         __le16  rom_version;
2431         __le16  patch_version;
2432 } __packed;
2433
2434 struct qca_device_info {
2435         u32     rom_version;
2436         u8      rampatch_hdr;   /* length of header in rampatch */
2437         u8      nvm_hdr;        /* length of header in NVM */
2438         u8      ver_offset;     /* offset of version structure in rampatch */
2439 };
2440
2441 static const struct qca_device_info qca_devices_table[] = {
2442         { 0x00000100, 20, 4, 10 }, /* Rome 1.0 */
2443         { 0x00000101, 20, 4, 10 }, /* Rome 1.1 */
2444         { 0x00000200, 28, 4, 18 }, /* Rome 2.0 */
2445         { 0x00000201, 28, 4, 18 }, /* Rome 2.1 */
2446         { 0x00000300, 28, 4, 18 }, /* Rome 3.0 */
2447         { 0x00000302, 28, 4, 18 }, /* Rome 3.2 */
2448 };
2449
2450 static int btusb_qca_send_vendor_req(struct hci_dev *hdev, u8 request,
2451                                      void *data, u16 size)
2452 {
2453         struct btusb_data *btdata = hci_get_drvdata(hdev);
2454         struct usb_device *udev = btdata->udev;
2455         int pipe, err;
2456         u8 *buf;
2457
2458         buf = kmalloc(size, GFP_KERNEL);
2459         if (!buf)
2460                 return -ENOMEM;
2461
2462         /* Found some of USB hosts have IOT issues with ours so that we should
2463          * not wait until HCI layer is ready.
2464          */
2465         pipe = usb_rcvctrlpipe(udev, 0);
2466         err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
2467                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2468         if (err < 0) {
2469                 BT_ERR("%s: Failed to access otp area (%d)", hdev->name, err);
2470                 goto done;
2471         }
2472
2473         memcpy(data, buf, size);
2474
2475 done:
2476         kfree(buf);
2477
2478         return err;
2479 }
2480
2481 static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
2482                                        const struct firmware *firmware,
2483                                        size_t hdr_size)
2484 {
2485         struct btusb_data *btdata = hci_get_drvdata(hdev);
2486         struct usb_device *udev = btdata->udev;
2487         size_t count, size, sent = 0;
2488         int pipe, len, err;
2489         u8 *buf;
2490
2491         buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
2492         if (!buf)
2493                 return -ENOMEM;
2494
2495         count = firmware->size;
2496
2497         size = min_t(size_t, count, hdr_size);
2498         memcpy(buf, firmware->data, size);
2499
2500         /* USB patches should go down to controller through USB path
2501          * because binary format fits to go down through USB channel.
2502          * USB control path is for patching headers and USB bulk is for
2503          * patch body.
2504          */
2505         pipe = usb_sndctrlpipe(udev, 0);
2506         err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
2507                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2508         if (err < 0) {
2509                 BT_ERR("%s: Failed to send headers (%d)", hdev->name, err);
2510                 goto done;
2511         }
2512
2513         sent += size;
2514         count -= size;
2515
2516         while (count) {
2517                 size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
2518
2519                 memcpy(buf, firmware->data + sent, size);
2520
2521                 pipe = usb_sndbulkpipe(udev, 0x02);
2522                 err = usb_bulk_msg(udev, pipe, buf, size, &len,
2523                                    QCA_DFU_TIMEOUT);
2524                 if (err < 0) {
2525                         BT_ERR("%s: Failed to send body at %zd of %zd (%d)",
2526                                hdev->name, sent, firmware->size, err);
2527                         break;
2528                 }
2529
2530                 if (size != len) {
2531                         BT_ERR("%s: Failed to get bulk buffer", hdev->name);
2532                         err = -EILSEQ;
2533                         break;
2534                 }
2535
2536                 sent  += size;
2537                 count -= size;
2538         }
2539
2540 done:
2541         kfree(buf);
2542         return err;
2543 }
2544
2545 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
2546                                          struct qca_version *ver,
2547                                          const struct qca_device_info *info)
2548 {
2549         struct qca_rampatch_version *rver;
2550         const struct firmware *fw;
2551         u32 ver_rom, ver_patch;
2552         u16 rver_rom, rver_patch;
2553         char fwname[64];
2554         int err;
2555
2556         ver_rom = le32_to_cpu(ver->rom_version);
2557         ver_patch = le32_to_cpu(ver->patch_version);
2558
2559         snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom);
2560
2561         err = request_firmware(&fw, fwname, &hdev->dev);
2562         if (err) {
2563                 BT_ERR("%s: failed to request rampatch file: %s (%d)",
2564                        hdev->name, fwname, err);
2565                 return err;
2566         }
2567
2568         BT_INFO("%s: using rampatch file: %s", hdev->name, fwname);
2569
2570         rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
2571         rver_rom = le16_to_cpu(rver->rom_version);
2572         rver_patch = le16_to_cpu(rver->patch_version);
2573
2574         BT_INFO("%s: QCA: patch rome 0x%x build 0x%x, firmware rome 0x%x "
2575                 "build 0x%x", hdev->name, rver_rom, rver_patch, ver_rom,
2576                 ver_patch);
2577
2578         if (rver_rom != ver_rom || rver_patch <= ver_patch) {
2579                 BT_ERR("%s: rampatch file version did not match with firmware",
2580                        hdev->name);
2581                 err = -EINVAL;
2582                 goto done;
2583         }
2584
2585         err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
2586
2587 done:
2588         release_firmware(fw);
2589
2590         return err;
2591 }
2592
2593 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
2594                                     struct qca_version *ver,
2595                                     const struct qca_device_info *info)
2596 {
2597         const struct firmware *fw;
2598         char fwname[64];
2599         int err;
2600
2601         snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x.bin",
2602                  le32_to_cpu(ver->rom_version));
2603
2604         err = request_firmware(&fw, fwname, &hdev->dev);
2605         if (err) {
2606                 BT_ERR("%s: failed to request NVM file: %s (%d)",
2607                        hdev->name, fwname, err);
2608                 return err;
2609         }
2610
2611         BT_INFO("%s: using NVM file: %s", hdev->name, fwname);
2612
2613         err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
2614
2615         release_firmware(fw);
2616
2617         return err;
2618 }
2619
2620 static int btusb_setup_qca(struct hci_dev *hdev)
2621 {
2622         const struct qca_device_info *info = NULL;
2623         struct qca_version ver;
2624         u32 ver_rom;
2625         u8 status;
2626         int i, err;
2627
2628         err = btusb_qca_send_vendor_req(hdev, QCA_GET_TARGET_VERSION, &ver,
2629                                         sizeof(ver));
2630         if (err < 0)
2631                 return err;
2632
2633         ver_rom = le32_to_cpu(ver.rom_version);
2634         for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
2635                 if (ver_rom == qca_devices_table[i].rom_version)
2636                         info = &qca_devices_table[i];
2637         }
2638         if (!info) {
2639                 BT_ERR("%s: don't support firmware rome 0x%x", hdev->name,
2640                        ver_rom);
2641                 return -ENODEV;
2642         }
2643
2644         err = btusb_qca_send_vendor_req(hdev, QCA_CHECK_STATUS, &status,
2645                                         sizeof(status));
2646         if (err < 0)
2647                 return err;
2648
2649         if (!(status & QCA_PATCH_UPDATED)) {
2650                 err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
2651                 if (err < 0)
2652                         return err;
2653         }
2654
2655         if (!(status & QCA_SYSCFG_UPDATED)) {
2656                 err = btusb_setup_qca_load_nvm(hdev, &ver, info);
2657                 if (err < 0)
2658                         return err;
2659         }
2660
2661         return 0;
2662 }
2663
2664 #ifdef CONFIG_BT_HCIBTUSB_BCM
2665 static inline int __set_diag_interface(struct hci_dev *hdev)
2666 {
2667         struct btusb_data *data = hci_get_drvdata(hdev);
2668         struct usb_interface *intf = data->diag;
2669         int i;
2670
2671         if (!data->diag)
2672                 return -ENODEV;
2673
2674         data->diag_tx_ep = NULL;
2675         data->diag_rx_ep = NULL;
2676
2677         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2678                 struct usb_endpoint_descriptor *ep_desc;
2679
2680                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2681
2682                 if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
2683                         data->diag_tx_ep = ep_desc;
2684                         continue;
2685                 }
2686
2687                 if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
2688                         data->diag_rx_ep = ep_desc;
2689                         continue;
2690                 }
2691         }
2692
2693         if (!data->diag_tx_ep || !data->diag_rx_ep) {
2694                 BT_ERR("%s invalid diagnostic descriptors", hdev->name);
2695                 return -ENODEV;
2696         }
2697
2698         return 0;
2699 }
2700
2701 static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable)
2702 {
2703         struct btusb_data *data = hci_get_drvdata(hdev);
2704         struct sk_buff *skb;
2705         struct urb *urb;
2706         unsigned int pipe;
2707
2708         if (!data->diag_tx_ep)
2709                 return ERR_PTR(-ENODEV);
2710
2711         urb = usb_alloc_urb(0, GFP_KERNEL);
2712         if (!urb)
2713                 return ERR_PTR(-ENOMEM);
2714
2715         skb = bt_skb_alloc(2, GFP_KERNEL);
2716         if (!skb) {
2717                 usb_free_urb(urb);
2718                 return ERR_PTR(-ENOMEM);
2719         }
2720
2721         *skb_put(skb, 1) = 0xf0;
2722         *skb_put(skb, 1) = enable;
2723
2724         pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress);
2725
2726         usb_fill_bulk_urb(urb, data->udev, pipe,
2727                           skb->data, skb->len, btusb_tx_complete, skb);
2728
2729         skb->dev = (void *)hdev;
2730
2731         return urb;
2732 }
2733
2734 static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable)
2735 {
2736         struct btusb_data *data = hci_get_drvdata(hdev);
2737         struct urb *urb;
2738
2739         if (!data->diag)
2740                 return -ENODEV;
2741
2742         if (!test_bit(HCI_RUNNING, &hdev->flags))
2743                 return -ENETDOWN;
2744
2745         urb = alloc_diag_urb(hdev, enable);
2746         if (IS_ERR(urb))
2747                 return PTR_ERR(urb);
2748
2749         return submit_or_queue_tx_urb(hdev, urb);
2750 }
2751 #endif
2752
2753 static int btusb_probe(struct usb_interface *intf,
2754                        const struct usb_device_id *id)
2755 {
2756         struct usb_endpoint_descriptor *ep_desc;
2757         struct btusb_data *data;
2758         struct hci_dev *hdev;
2759         int i, err;
2760
2761         BT_DBG("intf %p id %p", intf, id);
2762
2763         /* interface numbers are hardcoded in the spec */
2764         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
2765                 return -ENODEV;
2766
2767         if (!id->driver_info) {
2768                 const struct usb_device_id *match;
2769
2770                 match = usb_match_id(intf, blacklist_table);
2771                 if (match)
2772                         id = match;
2773         }
2774
2775         if (id->driver_info == BTUSB_IGNORE)
2776                 return -ENODEV;
2777
2778         if (id->driver_info & BTUSB_ATH3012) {
2779                 struct usb_device *udev = interface_to_usbdev(intf);
2780
2781                 /* Old firmware would otherwise let ath3k driver load
2782                  * patch and sysconfig files */
2783                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
2784                         return -ENODEV;
2785         }
2786
2787         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
2788         if (!data)
2789                 return -ENOMEM;
2790
2791         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2792                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2793
2794                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
2795                         data->intr_ep = ep_desc;
2796                         continue;
2797                 }
2798
2799                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
2800                         data->bulk_tx_ep = ep_desc;
2801                         continue;
2802                 }
2803
2804                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
2805                         data->bulk_rx_ep = ep_desc;
2806                         continue;
2807                 }
2808         }
2809
2810         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
2811                 return -ENODEV;
2812
2813         if (id->driver_info & BTUSB_AMP) {
2814                 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
2815                 data->cmdreq = 0x2b;
2816         } else {
2817                 data->cmdreq_type = USB_TYPE_CLASS;
2818                 data->cmdreq = 0x00;
2819         }
2820
2821         data->udev = interface_to_usbdev(intf);
2822         data->intf = intf;
2823
2824         INIT_WORK(&data->work, btusb_work);
2825         INIT_WORK(&data->waker, btusb_waker);
2826         init_usb_anchor(&data->deferred);
2827         init_usb_anchor(&data->tx_anchor);
2828         spin_lock_init(&data->txlock);
2829
2830         init_usb_anchor(&data->intr_anchor);
2831         init_usb_anchor(&data->bulk_anchor);
2832         init_usb_anchor(&data->isoc_anchor);
2833         init_usb_anchor(&data->diag_anchor);
2834         spin_lock_init(&data->rxlock);
2835
2836         if (id->driver_info & BTUSB_INTEL_NEW) {
2837                 data->recv_event = btusb_recv_event_intel;
2838                 data->recv_bulk = btusb_recv_bulk_intel;
2839                 set_bit(BTUSB_BOOTLOADER, &data->flags);
2840         } else {
2841                 data->recv_event = hci_recv_frame;
2842                 data->recv_bulk = btusb_recv_bulk;
2843         }
2844
2845         hdev = hci_alloc_dev();
2846         if (!hdev)
2847                 return -ENOMEM;
2848
2849         hdev->bus = HCI_USB;
2850         hci_set_drvdata(hdev, data);
2851
2852         if (id->driver_info & BTUSB_AMP)
2853                 hdev->dev_type = HCI_AMP;
2854         else
2855                 hdev->dev_type = HCI_BREDR;
2856
2857         data->hdev = hdev;
2858
2859         SET_HCIDEV_DEV(hdev, &intf->dev);
2860
2861         hdev->open   = btusb_open;
2862         hdev->close  = btusb_close;
2863         hdev->flush  = btusb_flush;
2864         hdev->send   = btusb_send_frame;
2865         hdev->notify = btusb_notify;
2866
2867         if (id->driver_info & BTUSB_BCM2045)
2868                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
2869
2870         if (id->driver_info & BTUSB_BCM92035)
2871                 hdev->setup = btusb_setup_bcm92035;
2872
2873 #ifdef CONFIG_BT_HCIBTUSB_BCM
2874         if (id->driver_info & BTUSB_BCM_PATCHRAM) {
2875                 hdev->setup = btbcm_setup_patchram;
2876                 hdev->set_diag = btusb_bcm_set_diag;
2877                 hdev->set_bdaddr = btbcm_set_bdaddr;
2878
2879                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
2880                 data->diag = usb_ifnum_to_if(data->udev, 2);
2881         }
2882
2883         if (id->driver_info & BTUSB_BCM_APPLE) {
2884                 hdev->setup = btbcm_setup_apple;
2885                 hdev->set_diag = btusb_bcm_set_diag;
2886
2887                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
2888                 data->diag = usb_ifnum_to_if(data->udev, 2);
2889         }
2890 #endif
2891
2892         if (id->driver_info & BTUSB_INTEL) {
2893                 hdev->setup = btusb_setup_intel;
2894                 hdev->shutdown = btusb_shutdown_intel;
2895                 hdev->set_diag = btintel_set_diag_mfg;
2896                 hdev->set_bdaddr = btintel_set_bdaddr;
2897                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2898                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
2899                 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
2900         }
2901
2902         if (id->driver_info & BTUSB_INTEL_NEW) {
2903                 hdev->send = btusb_send_frame_intel;
2904                 hdev->setup = btusb_setup_intel_new;
2905                 hdev->hw_error = btintel_hw_error;
2906                 hdev->set_diag = btintel_set_diag;
2907                 hdev->set_bdaddr = btintel_set_bdaddr;
2908                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2909                 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
2910         }
2911
2912         if (id->driver_info & BTUSB_MARVELL)
2913                 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
2914
2915         if (id->driver_info & BTUSB_SWAVE) {
2916                 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
2917                 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
2918         }
2919
2920         if (id->driver_info & BTUSB_INTEL_BOOT)
2921                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
2922
2923         if (id->driver_info & BTUSB_ATH3012) {
2924                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
2925                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
2926                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2927         }
2928
2929         if (id->driver_info & BTUSB_QCA_ROME) {
2930                 data->setup_on_usb = btusb_setup_qca;
2931                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
2932         }
2933
2934 #ifdef CONFIG_BT_HCIBTUSB_RTL
2935         if (id->driver_info & BTUSB_REALTEK) {
2936                 hdev->setup = btrtl_setup_realtek;
2937
2938                 /* Realtek devices lose their updated firmware over suspend,
2939                  * but the USB hub doesn't notice any status change.
2940                  * Explicitly request a device reset on resume.
2941                  */
2942                 set_bit(BTUSB_RESET_RESUME, &data->flags);
2943         }
2944 #endif
2945
2946         if (id->driver_info & BTUSB_AMP) {
2947                 /* AMP controllers do not support SCO packets */
2948                 data->isoc = NULL;
2949         } else {
2950                 /* Interface numbers are hardcoded in the specification */
2951                 data->isoc = usb_ifnum_to_if(data->udev, 1);
2952         }
2953
2954         if (!reset)
2955                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2956
2957         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
2958                 if (!disable_scofix)
2959                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
2960         }
2961
2962         if (id->driver_info & BTUSB_BROKEN_ISOC)
2963                 data->isoc = NULL;
2964
2965         if (id->driver_info & BTUSB_DIGIANSWER) {
2966                 data->cmdreq_type = USB_TYPE_VENDOR;
2967                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2968         }
2969
2970         if (id->driver_info & BTUSB_CSR) {
2971                 struct usb_device *udev = data->udev;
2972                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
2973
2974                 /* Old firmware would otherwise execute USB reset */
2975                 if (bcdDevice < 0x117)
2976                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2977
2978                 /* Fake CSR devices with broken commands */
2979                 if (bcdDevice <= 0x100 || bcdDevice == 0x134)
2980                         hdev->setup = btusb_setup_csr;
2981
2982                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
2983         }
2984
2985         if (id->driver_info & BTUSB_SNIFFER) {
2986                 struct usb_device *udev = data->udev;
2987
2988                 /* New sniffer firmware has crippled HCI interface */
2989                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
2990                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
2991         }
2992
2993         if (id->driver_info & BTUSB_INTEL_BOOT) {
2994                 /* A bug in the bootloader causes that interrupt interface is
2995                  * only enabled after receiving SetInterface(0, AltSetting=0).
2996                  */
2997                 err = usb_set_interface(data->udev, 0, 0);
2998                 if (err < 0) {
2999                         BT_ERR("failed to set interface 0, alt 0 %d", err);
3000                         hci_free_dev(hdev);
3001                         return err;
3002                 }
3003         }
3004
3005         if (data->isoc) {
3006                 err = usb_driver_claim_interface(&btusb_driver,
3007                                                  data->isoc, data);
3008                 if (err < 0) {
3009                         hci_free_dev(hdev);
3010                         return err;
3011                 }
3012         }
3013
3014 #ifdef CONFIG_BT_HCIBTUSB_BCM
3015         if (data->diag) {
3016                 if (!usb_driver_claim_interface(&btusb_driver,
3017                                                 data->diag, data))
3018                         __set_diag_interface(hdev);
3019                 else
3020                         data->diag = NULL;
3021         }
3022 #endif
3023
3024         err = hci_register_dev(hdev);
3025         if (err < 0) {
3026                 hci_free_dev(hdev);
3027                 return err;
3028         }
3029
3030         usb_set_intfdata(intf, data);
3031
3032         return 0;
3033 }
3034
3035 static void btusb_disconnect(struct usb_interface *intf)
3036 {
3037         struct btusb_data *data = usb_get_intfdata(intf);
3038         struct hci_dev *hdev;
3039
3040         BT_DBG("intf %p", intf);
3041
3042         if (!data)
3043                 return;
3044
3045         hdev = data->hdev;
3046         usb_set_intfdata(data->intf, NULL);
3047
3048         if (data->isoc)
3049                 usb_set_intfdata(data->isoc, NULL);
3050
3051         if (data->diag)
3052                 usb_set_intfdata(data->diag, NULL);
3053
3054         hci_unregister_dev(hdev);
3055
3056         if (intf == data->intf) {
3057                 if (data->isoc)
3058                         usb_driver_release_interface(&btusb_driver, data->isoc);
3059                 if (data->diag)
3060                         usb_driver_release_interface(&btusb_driver, data->diag);
3061         } else if (intf == data->isoc) {
3062                 if (data->diag)
3063                         usb_driver_release_interface(&btusb_driver, data->diag);
3064                 usb_driver_release_interface(&btusb_driver, data->intf);
3065         } else if (intf == data->diag) {
3066                 usb_driver_release_interface(&btusb_driver, data->intf);
3067                 if (data->isoc)
3068                         usb_driver_release_interface(&btusb_driver, data->isoc);
3069         }
3070
3071         hci_free_dev(hdev);
3072 }
3073
3074 #ifdef CONFIG_PM
3075 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
3076 {
3077         struct btusb_data *data = usb_get_intfdata(intf);
3078
3079         BT_DBG("intf %p", intf);
3080
3081         if (data->suspend_count++)
3082                 return 0;
3083
3084         spin_lock_irq(&data->txlock);
3085         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
3086                 set_bit(BTUSB_SUSPENDING, &data->flags);
3087                 spin_unlock_irq(&data->txlock);
3088         } else {
3089                 spin_unlock_irq(&data->txlock);
3090                 data->suspend_count--;
3091                 return -EBUSY;
3092         }
3093
3094         cancel_work_sync(&data->work);
3095
3096         btusb_stop_traffic(data);
3097         usb_kill_anchored_urbs(&data->tx_anchor);
3098
3099         /* Optionally request a device reset on resume, but only when
3100          * wakeups are disabled. If wakeups are enabled we assume the
3101          * device will stay powered up throughout suspend.
3102          */
3103         if (test_bit(BTUSB_RESET_RESUME, &data->flags) &&
3104             !device_may_wakeup(&data->udev->dev))
3105                 data->udev->reset_resume = 1;
3106
3107         return 0;
3108 }
3109
3110 static void play_deferred(struct btusb_data *data)
3111 {
3112         struct urb *urb;
3113         int err;
3114
3115         while ((urb = usb_get_from_anchor(&data->deferred))) {
3116                 err = usb_submit_urb(urb, GFP_ATOMIC);
3117                 if (err < 0)
3118                         break;
3119
3120                 data->tx_in_flight++;
3121         }
3122         usb_scuttle_anchored_urbs(&data->deferred);
3123 }
3124
3125 static int btusb_resume(struct usb_interface *intf)
3126 {
3127         struct btusb_data *data = usb_get_intfdata(intf);
3128         struct hci_dev *hdev = data->hdev;
3129         int err = 0;
3130
3131         BT_DBG("intf %p", intf);
3132
3133         if (--data->suspend_count)
3134                 return 0;
3135
3136         if (!test_bit(HCI_RUNNING, &hdev->flags))
3137                 goto done;
3138
3139         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
3140                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
3141                 if (err < 0) {
3142                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
3143                         goto failed;
3144                 }
3145         }
3146
3147         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
3148                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
3149                 if (err < 0) {
3150                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
3151                         goto failed;
3152                 }
3153
3154                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
3155         }
3156
3157         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
3158                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
3159                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
3160                 else
3161                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
3162         }
3163
3164         spin_lock_irq(&data->txlock);
3165         play_deferred(data);
3166         clear_bit(BTUSB_SUSPENDING, &data->flags);
3167         spin_unlock_irq(&data->txlock);
3168         schedule_work(&data->work);
3169
3170         return 0;
3171
3172 failed:
3173         usb_scuttle_anchored_urbs(&data->deferred);
3174 done:
3175         spin_lock_irq(&data->txlock);
3176         clear_bit(BTUSB_SUSPENDING, &data->flags);
3177         spin_unlock_irq(&data->txlock);
3178
3179         return err;
3180 }
3181 #endif
3182
3183 static struct usb_driver btusb_driver = {
3184         .name           = "btusb",
3185         .probe          = btusb_probe,
3186         .disconnect     = btusb_disconnect,
3187 #ifdef CONFIG_PM
3188         .suspend        = btusb_suspend,
3189         .resume         = btusb_resume,
3190 #endif
3191         .id_table       = btusb_table,
3192         .supports_autosuspend = 1,
3193         .disable_hub_initiated_lpm = 1,
3194 };
3195
3196 module_usb_driver(btusb_driver);
3197
3198 module_param(disable_scofix, bool, 0644);
3199 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
3200
3201 module_param(force_scofix, bool, 0644);
3202 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
3203
3204 module_param(reset, bool, 0644);
3205 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
3206
3207 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
3208 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
3209 MODULE_VERSION(VERSION);
3210 MODULE_LICENSE("GPL");