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/usb/quirks.h>
  27 #include <linux/firmware.h>
  28 #include <asm/unaligned.h>
  29
  30 #include <net/bluetooth/bluetooth.h>
  31 #include <net/bluetooth/hci_core.h>
  32
  33 #include "btintel.h"
  34 #include "btbcm.h"
  35 #include "btrtl.h"
  36
  37 #define VERSION "0.8"
  38
  39 static bool disable_scofix;
  40 static bool force_scofix;
  41
  42 static bool reset = true;
  43
  44 static struct usb_driver btusb_driver;
  45
  46 #define BTUSB_IGNORE            0x01
  47 #define BTUSB_DIGIANSWER        0x02
  48 #define BTUSB_CSR               0x04
  49 #define BTUSB_SNIFFER           0x08
  50 #define BTUSB_BCM92035          0x10
  51 #define BTUSB_BROKEN_ISOC       0x20
  52 #define BTUSB_WRONG_SCO_MTU     0x40
  53 #define BTUSB_ATH3012           0x80
  54 #define BTUSB_INTEL             0x100
  55 #define BTUSB_INTEL_BOOT        0x200
  56 #define BTUSB_BCM_PATCHRAM      0x400
  57 #define BTUSB_MARVELL           0x800
  58 #define BTUSB_SWAVE             0x1000
  59 #define BTUSB_INTEL_NEW         0x2000
  60 #define BTUSB_AMP               0x4000
  61 #define BTUSB_QCA_ROME          0x8000
  62 #define BTUSB_BCM_APPLE         0x10000
  63 #define BTUSB_REALTEK           0x20000
  64 #define BTUSB_BCM2045           0x40000
  65 #define BTUSB_IFNUM_2           0x80000
  66
  67 static const struct usb_device_id btusb_table[] = {
  68         /* Generic Bluetooth USB device */
  69         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  70
  71         /* Generic Bluetooth AMP device */
  72         { USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP },
  73
  74         /* Generic Bluetooth USB interface */
  75         { USB_INTERFACE_INFO(0xe0, 0x01, 0x01) },
  76
  77         /* Apple-specific (Broadcom) devices */
  78         { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01),
  79           .driver_info = BTUSB_BCM_APPLE | BTUSB_IFNUM_2 },
  80
  81         /* MediaTek MT76x0E */
  82         { USB_DEVICE(0x0e8d, 0x763f) },
  83
  84         /* Broadcom SoftSailing reporting vendor specific */
  85         { USB_DEVICE(0x0a5c, 0x21e1) },
  86
  87         /* Apple MacBookPro 7,1 */
  88         { USB_DEVICE(0x05ac, 0x8213) },
  89
  90         /* Apple iMac11,1 */
  91         { USB_DEVICE(0x05ac, 0x8215) },
  92
  93         /* Apple MacBookPro6,2 */
  94         { USB_DEVICE(0x05ac, 0x8218) },
  95
  96         /* Apple MacBookAir3,1, MacBookAir3,2 */
  97         { USB_DEVICE(0x05ac, 0x821b) },
  98
  99         /* Apple MacBookAir4,1 */
 100         { USB_DEVICE(0x05ac, 0x821f) },
 101
 102         /* Apple MacBookPro8,2 */
 103         { USB_DEVICE(0x05ac, 0x821a) },
 104
 105         /* Apple MacMini5,1 */
 106         { USB_DEVICE(0x05ac, 0x8281) },
 107
 108         /* AVM BlueFRITZ! USB v2.0 */
 109         { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE },
 110
 111         /* Bluetooth Ultraport Module from IBM */
 112         { USB_DEVICE(0x04bf, 0x030a) },
 113
 114         /* ALPS Modules with non-standard id */
 115         { USB_DEVICE(0x044e, 0x3001) },
 116         { USB_DEVICE(0x044e, 0x3002) },
 117
 118         /* Ericsson with non-standard id */
 119         { USB_DEVICE(0x0bdb, 0x1002) },
 120
 121         /* Canyon CN-BTU1 with HID interfaces */
 122         { USB_DEVICE(0x0c10, 0x0000) },
 123
 124         /* Broadcom BCM20702A0 */
 125         { USB_DEVICE(0x413c, 0x8197) },
 126
 127         /* Broadcom BCM20702B0 (Dynex/Insignia) */
 128         { USB_DEVICE(0x19ff, 0x0239), .driver_info = BTUSB_BCM_PATCHRAM },
 129
 130         /* Broadcom BCM43142A0 (Foxconn/Lenovo) */
 131         { USB_DEVICE(0x105b, 0xe065), .driver_info = BTUSB_BCM_PATCHRAM },
 132
 133         /* Foxconn - Hon Hai */
 134         { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01),
 135           .driver_info = BTUSB_BCM_PATCHRAM },
 136
 137         /* Lite-On Technology - Broadcom based */
 138         { USB_VENDOR_AND_INTERFACE_INFO(0x04ca, 0xff, 0x01, 0x01),
 139           .driver_info = BTUSB_BCM_PATCHRAM },
 140
 141         /* Broadcom devices with vendor specific id */
 142         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
 143           .driver_info = BTUSB_BCM_PATCHRAM },
 144
 145         /* ASUSTek Computer - Broadcom based */
 146         { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01),
 147           .driver_info = BTUSB_BCM_PATCHRAM },
 148
 149         /* Belkin F8065bf - Broadcom based */
 150         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01),
 151           .driver_info = BTUSB_BCM_PATCHRAM },
 152
 153         /* IMC Networks - Broadcom based */
 154         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01),
 155           .driver_info = BTUSB_BCM_PATCHRAM },
 156
 157         /* Toshiba Corp - Broadcom based */
 158         { USB_VENDOR_AND_INTERFACE_INFO(0x0930, 0xff, 0x01, 0x01),
 159           .driver_info = BTUSB_BCM_PATCHRAM },
 160
 161         /* Intel Bluetooth USB Bootloader (RAM module) */
 162         { USB_DEVICE(0x8087, 0x0a5a),
 163           .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
 164
 165         { }     /* Terminating entry */
 166 };
 167
 168 MODULE_DEVICE_TABLE(usb, btusb_table);
 169
 170 static const struct usb_device_id blacklist_table[] = {
 171         /* CSR BlueCore devices */
 172         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 173
 174         /* Broadcom BCM2033 without firmware */
 175         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 176
 177         /* Broadcom BCM2045 devices */
 178         { USB_DEVICE(0x0a5c, 0x2045), .driver_info = BTUSB_BCM2045 },
 179
 180         /* Atheros 3011 with sflash firmware */
 181         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 182         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 183         { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE },
 184         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 185         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 186         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 187         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 188
 189         /* Atheros AR9285 Malbec with sflash firmware */
 190         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 191
 192         /* Atheros 3012 with sflash firmware */
 193         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 194         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 195         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 196         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 197         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 198         { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
 199         { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
 200         { USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 },
 201         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 202         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 203         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 204         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 205         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 206         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 207         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 208         { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
 209         { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
 210         { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
 211         { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 },
 212         { USB_DEVICE(0x04ca, 0x3018), .driver_info = BTUSB_ATH3012 },
 213         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 214         { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
 215         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 216         { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
 217         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 218         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 219         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 220         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 221         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 222         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
 223         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 224         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 225         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 226         { USB_DEVICE(0x0cf3, 0x817b), .driver_info = BTUSB_ATH3012 },
 227         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 228         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 229         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 230         { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 },
 231         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 232         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 233         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 234         { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 },
 235         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 236         { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
 237         { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
 238         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
 239         { USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 },
 240         { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
 241
 242         /* Atheros AR5BBU12 with sflash firmware */
 243         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 244
 245         /* Atheros AR5BBU12 with sflash firmware */
 246         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 247         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 248
 249         /* QCA ROME chipset */
 250         { USB_DEVICE(0x0cf3, 0xe007), .driver_info = BTUSB_QCA_ROME },
 251         { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME },
 252         { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME },
 253
 254         /* Broadcom BCM2035 */
 255         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 256         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 257         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 258
 259         /* Broadcom BCM2045 */
 260         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 261         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 262
 263         /* IBM/Lenovo ThinkPad with Broadcom chip */
 264         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 265         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 266
 267         /* HP laptop with Broadcom chip */
 268         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 269
 270         /* Dell laptop with Broadcom chip */
 271         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 272
 273         /* Dell Wireless 370 and 410 devices */
 274         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 275         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 276
 277         /* Belkin F8T012 and F8T013 devices */
 278         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 279         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 280
 281         /* Asus WL-BTD202 device */
 282         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 283
 284         /* Kensington Bluetooth USB adapter */
 285         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 286
 287         /* RTX Telecom based adapters with buggy SCO support */
 288         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 289         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 290
 291         /* CONWISE Technology based adapters with buggy SCO support */
 292         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 293
 294         /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
 295         { USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE },
 296
 297         /* Digianswer devices */
 298         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 299         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 300
 301         /* CSR BlueCore Bluetooth Sniffer */
 302         { USB_DEVICE(0x0a12, 0x0002),
 303           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 304
 305         /* Frontline ComProbe Bluetooth Sniffer */
 306         { USB_DEVICE(0x16d3, 0x0002),
 307           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 308
 309         /* Marvell Bluetooth devices */
 310         { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
 311         { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
 312
 313         /* Intel Bluetooth devices */
 314         { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR },
 315         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 316         { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
 317         { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_NEW },
 318
 319         /* Other Intel Bluetooth devices */
 320         { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01),
 321           .driver_info = BTUSB_IGNORE },
 322
 323         /* Realtek Bluetooth devices */
 324         { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01),
 325           .driver_info = BTUSB_REALTEK },
 326
 327         /* Additional Realtek 8723AE Bluetooth devices */
 328         { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK },
 329         { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK },
 330
 331         /* Additional Realtek 8723BE Bluetooth devices */
 332         { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK },
 333         { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK },
 334         { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
 335         { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
 336         { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },
 337         { USB_DEVICE(0x13d3, 0x3494), .driver_info = BTUSB_REALTEK },
 338
 339         /* Additional Realtek 8723BU Bluetooth devices */
 340         { USB_DEVICE(0x7392, 0xa611), .driver_info = BTUSB_REALTEK },
 341
 342         /* Additional Realtek 8723DE Bluetooth devices */
 343         { USB_DEVICE(0x0bda, 0xb009), .driver_info = BTUSB_REALTEK },
 344         { USB_DEVICE(0x2ff8, 0xb011), .driver_info = BTUSB_REALTEK },
 345
 346         /* Additional Realtek 8821AE Bluetooth devices */
 347         { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
 348         { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },
 349         { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK },
 350         { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK },
 351         { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK },
 352
 353         /* Additional Realtek 8822BE Bluetooth devices */
 354         { USB_DEVICE(0x0b05, 0x185c), .driver_info = BTUSB_REALTEK },
 355
 356         /* Additional Realtek 8822CE Bluetooth devices */
 357         { USB_DEVICE(0x04ca, 0x4005), .driver_info = BTUSB_REALTEK },
 358
 359         /* Silicon Wave based devices */
 360         { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE },
 361
 362         { }     /* Terminating entry */
 363 };
 364
 365 #define BTUSB_MAX_ISOC_FRAMES   10
 366
 367 #define BTUSB_INTR_RUNNING      0
 368 #define BTUSB_BULK_RUNNING      1
 369 #define BTUSB_ISOC_RUNNING      2
 370 #define BTUSB_SUSPENDING        3
 371 #define BTUSB_DID_ISO_RESUME    4
 372 #define BTUSB_BOOTLOADER        5
 373 #define BTUSB_DOWNLOADING       6
 374 #define BTUSB_FIRMWARE_LOADED   7
 375 #define BTUSB_FIRMWARE_FAILED   8
 376 #define BTUSB_BOOTING           9
 377 #define BTUSB_DIAG_RUNNING      10
 378 #define BTUSB_OOB_WAKE_ENABLED  11
 379
 380 struct btusb_data {
 381         struct hci_dev       *hdev;
 382         struct usb_device    *udev;
 383         struct usb_interface *intf;
 384         struct usb_interface *isoc;
 385         struct usb_interface *diag;
 386
 387         unsigned long flags;
 388
 389         struct work_struct work;
 390         struct work_struct waker;
 391
 392         struct usb_anchor deferred;
 393         struct usb_anchor tx_anchor;
 394         int tx_in_flight;
 395         spinlock_t txlock;
 396
 397         struct usb_anchor intr_anchor;
 398         struct usb_anchor bulk_anchor;
 399         struct usb_anchor isoc_anchor;
 400         struct usb_anchor diag_anchor;
 401         spinlock_t rxlock;
 402
 403         struct sk_buff *evt_skb;
 404         struct sk_buff *acl_skb;
 405         struct sk_buff *sco_skb;
 406
 407         struct usb_endpoint_descriptor *intr_ep;
 408         struct usb_endpoint_descriptor *bulk_tx_ep;
 409         struct usb_endpoint_descriptor *bulk_rx_ep;
 410         struct usb_endpoint_descriptor *isoc_tx_ep;
 411         struct usb_endpoint_descriptor *isoc_rx_ep;
 412         struct usb_endpoint_descriptor *diag_tx_ep;
 413         struct usb_endpoint_descriptor *diag_rx_ep;
 414
 415         __u8 cmdreq_type;
 416         __u8 cmdreq;
 417
 418         unsigned int sco_num;
 419         int isoc_altsetting;
 420         int suspend_count;
 421
 422         int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
 423         int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
 424
 425         int (*setup_on_usb)(struct hci_dev *hdev);
 426 };
 427
 428 static inline void btusb_free_frags(struct btusb_data *data)
 429 {
 430         unsigned long flags;
 431
 432         spin_lock_irqsave(&data->rxlock, flags);
 433
 434         kfree_skb(data->evt_skb);
 435         data->evt_skb = NULL;
 436
 437         kfree_skb(data->acl_skb);
 438         data->acl_skb = NULL;
 439
 440         kfree_skb(data->sco_skb);
 441         data->sco_skb = NULL;
 442
 443         spin_unlock_irqrestore(&data->rxlock, flags);
 444 }
 445
 446 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
 447 {
 448         struct sk_buff *skb;
 449         int err = 0;
 450
 451         spin_lock(&data->rxlock);
 452         skb = data->evt_skb;
 453
 454         while (count) {
 455                 int len;
 456
 457                 if (!skb) {
 458                         skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
 459                         if (!skb) {
 460                                 err = -ENOMEM;
 461                                 break;
 462                         }
 463
 464                         bt_cb(skb)->pkt_type = HCI_EVENT_PKT;
 465                         bt_cb(skb)->expect = HCI_EVENT_HDR_SIZE;
 466                 }
 467
 468                 len = min_t(uint, bt_cb(skb)->expect, count);
 469                 memcpy(skb_put(skb, len), buffer, len);
 470
 471                 count -= len;
 472                 buffer += len;
 473                 bt_cb(skb)->expect -= len;
 474
 475                 if (skb->len == HCI_EVENT_HDR_SIZE) {
 476                         /* Complete event header */
 477                         bt_cb(skb)->expect = hci_event_hdr(skb)->plen;
 478
 479                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 480                                 kfree_skb(skb);
 481                                 skb = NULL;
 482
 483                                 err = -EILSEQ;
 484                                 break;
 485                         }
 486                 }
 487
 488                 if (bt_cb(skb)->expect == 0) {
 489                         /* Complete frame */
 490                         data->recv_event(data->hdev, skb);
 491                         skb = NULL;
 492                 }
 493         }
 494
 495         data->evt_skb = skb;
 496         spin_unlock(&data->rxlock);
 497
 498         return err;
 499 }
 500
 501 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
 502 {
 503         struct sk_buff *skb;
 504         int err = 0;
 505
 506         spin_lock(&data->rxlock);
 507         skb = data->acl_skb;
 508
 509         while (count) {
 510                 int len;
 511
 512                 if (!skb) {
 513                         skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
 514                         if (!skb) {
 515                                 err = -ENOMEM;
 516                                 break;
 517                         }
 518
 519                         bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT;
 520                         bt_cb(skb)->expect = HCI_ACL_HDR_SIZE;
 521                 }
 522
 523                 len = min_t(uint, bt_cb(skb)->expect, count);
 524                 memcpy(skb_put(skb, len), buffer, len);
 525
 526                 count -= len;
 527                 buffer += len;
 528                 bt_cb(skb)->expect -= len;
 529
 530                 if (skb->len == HCI_ACL_HDR_SIZE) {
 531                         __le16 dlen = hci_acl_hdr(skb)->dlen;
 532
 533                         /* Complete ACL header */
 534                         bt_cb(skb)->expect = __le16_to_cpu(dlen);
 535
 536                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 537                                 kfree_skb(skb);
 538                                 skb = NULL;
 539
 540                                 err = -EILSEQ;
 541                                 break;
 542                         }
 543                 }
 544
 545                 if (bt_cb(skb)->expect == 0) {
 546                         /* Complete frame */
 547                         hci_recv_frame(data->hdev, skb);
 548                         skb = NULL;
 549                 }
 550         }
 551
 552         data->acl_skb = skb;
 553         spin_unlock(&data->rxlock);
 554
 555         return err;
 556 }
 557
 558 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
 559 {
 560         struct sk_buff *skb;
 561         int err = 0;
 562
 563         spin_lock(&data->rxlock);
 564         skb = data->sco_skb;
 565
 566         while (count) {
 567                 int len;
 568
 569                 if (!skb) {
 570                         skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
 571                         if (!skb) {
 572                                 err = -ENOMEM;
 573                                 break;
 574                         }
 575
 576                         bt_cb(skb)->pkt_type = HCI_SCODATA_PKT;
 577                         bt_cb(skb)->expect = HCI_SCO_HDR_SIZE;
 578                 }
 579
 580                 len = min_t(uint, bt_cb(skb)->expect, count);
 581                 memcpy(skb_put(skb, len), buffer, len);
 582
 583                 count -= len;
 584                 buffer += len;
 585                 bt_cb(skb)->expect -= len;
 586
 587                 if (skb->len == HCI_SCO_HDR_SIZE) {
 588                         /* Complete SCO header */
 589                         bt_cb(skb)->expect = hci_sco_hdr(skb)->dlen;
 590
 591                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 592                                 kfree_skb(skb);
 593                                 skb = NULL;
 594
 595                                 err = -EILSEQ;
 596                                 break;
 597                         }
 598                 }
 599
 600                 if (bt_cb(skb)->expect == 0) {
 601                         /* Complete frame */
 602                         hci_recv_frame(data->hdev, skb);
 603                         skb = NULL;
 604                 }
 605         }
 606
 607         data->sco_skb = skb;
 608         spin_unlock(&data->rxlock);
 609
 610         return err;
 611 }
 612
 613 static void btusb_intr_complete(struct urb *urb)
 614 {
 615         struct hci_dev *hdev = urb->context;
 616         struct btusb_data *data = hci_get_drvdata(hdev);
 617         int err;
 618
 619         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 620                urb->actual_length);
 621
 622         if (!test_bit(HCI_RUNNING, &hdev->flags))
 623                 return;
 624
 625         if (urb->status == 0) {
 626                 hdev->stat.byte_rx += urb->actual_length;
 627
 628                 if (btusb_recv_intr(data, urb->transfer_buffer,
 629                                     urb->actual_length) < 0) {
 630                         BT_ERR("%s corrupted event packet", hdev->name);
 631                         hdev->stat.err_rx++;
 632                 }
 633         } else if (urb->status == -ENOENT) {
 634                 /* Avoid suspend failed when usb_kill_urb */
 635                 return;
 636         }
 637
 638         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 639                 return;
 640
 641         usb_mark_last_busy(data->udev);
 642         usb_anchor_urb(urb, &data->intr_anchor);
 643
 644         err = usb_submit_urb(urb, GFP_ATOMIC);
 645         if (err < 0) {
 646                 /* -EPERM: urb is being killed;
 647                  * -ENODEV: device got disconnected */
 648                 if (err != -EPERM && err != -ENODEV)
 649                         BT_ERR("%s urb %p failed to resubmit (%d)",
 650                                hdev->name, urb, -err);
 651                 usb_unanchor_urb(urb);
 652         }
 653 }
 654
 655 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 656 {
 657         struct btusb_data *data = hci_get_drvdata(hdev);
 658         struct urb *urb;
 659         unsigned char *buf;
 660         unsigned int pipe;
 661         int err, size;
 662
 663         BT_DBG("%s", hdev->name);
 664
 665         if (!data->intr_ep)
 666                 return -ENODEV;
 667
 668         urb = usb_alloc_urb(0, mem_flags);
 669         if (!urb)
 670                 return -ENOMEM;
 671
 672         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 673
 674         buf = kmalloc(size, mem_flags);
 675         if (!buf) {
 676                 usb_free_urb(urb);
 677                 return -ENOMEM;
 678         }
 679
 680         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 681
 682         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 683                          btusb_intr_complete, hdev, data->intr_ep->bInterval);
 684
 685         urb->transfer_flags |= URB_FREE_BUFFER;
 686
 687         usb_anchor_urb(urb, &data->intr_anchor);
 688
 689         err = usb_submit_urb(urb, mem_flags);
 690         if (err < 0) {
 691                 if (err != -EPERM && err != -ENODEV)
 692                         BT_ERR("%s urb %p submission failed (%d)",
 693                                hdev->name, urb, -err);
 694                 usb_unanchor_urb(urb);
 695         }
 696
 697         usb_free_urb(urb);
 698
 699         return err;
 700 }
 701
 702 static void btusb_bulk_complete(struct urb *urb)
 703 {
 704         struct hci_dev *hdev = urb->context;
 705         struct btusb_data *data = hci_get_drvdata(hdev);
 706         int err;
 707
 708         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 709                urb->actual_length);
 710
 711         if (!test_bit(HCI_RUNNING, &hdev->flags))
 712                 return;
 713
 714         if (urb->status == 0) {
 715                 hdev->stat.byte_rx += urb->actual_length;
 716
 717                 if (data->recv_bulk(data, urb->transfer_buffer,
 718                                     urb->actual_length) < 0) {
 719                         BT_ERR("%s corrupted ACL packet", hdev->name);
 720                         hdev->stat.err_rx++;
 721                 }
 722         } else if (urb->status == -ENOENT) {
 723                 /* Avoid suspend failed when usb_kill_urb */
 724                 return;
 725         }
 726
 727         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 728                 return;
 729
 730         usb_anchor_urb(urb, &data->bulk_anchor);
 731         usb_mark_last_busy(data->udev);
 732
 733         err = usb_submit_urb(urb, GFP_ATOMIC);
 734         if (err < 0) {
 735                 /* -EPERM: urb is being killed;
 736                  * -ENODEV: device got disconnected */
 737                 if (err != -EPERM && err != -ENODEV)
 738                         BT_ERR("%s urb %p failed to resubmit (%d)",
 739                                hdev->name, urb, -err);
 740                 usb_unanchor_urb(urb);
 741         }
 742 }
 743
 744 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 745 {
 746         struct btusb_data *data = hci_get_drvdata(hdev);
 747         struct urb *urb;
 748         unsigned char *buf;
 749         unsigned int pipe;
 750         int err, size = HCI_MAX_FRAME_SIZE;
 751
 752         BT_DBG("%s", hdev->name);
 753
 754         if (!data->bulk_rx_ep)
 755                 return -ENODEV;
 756
 757         urb = usb_alloc_urb(0, mem_flags);
 758         if (!urb)
 759                 return -ENOMEM;
 760
 761         buf = kmalloc(size, mem_flags);
 762         if (!buf) {
 763                 usb_free_urb(urb);
 764                 return -ENOMEM;
 765         }
 766
 767         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 768
 769         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
 770                           btusb_bulk_complete, hdev);
 771
 772         urb->transfer_flags |= URB_FREE_BUFFER;
 773
 774         usb_mark_last_busy(data->udev);
 775         usb_anchor_urb(urb, &data->bulk_anchor);
 776
 777         err = usb_submit_urb(urb, mem_flags);
 778         if (err < 0) {
 779                 if (err != -EPERM && err != -ENODEV)
 780                         BT_ERR("%s urb %p submission failed (%d)",
 781                                hdev->name, urb, -err);
 782                 usb_unanchor_urb(urb);
 783         }
 784
 785         usb_free_urb(urb);
 786
 787         return err;
 788 }
 789
 790 static void btusb_isoc_complete(struct urb *urb)
 791 {
 792         struct hci_dev *hdev = urb->context;
 793         struct btusb_data *data = hci_get_drvdata(hdev);
 794         int i, err;
 795
 796         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 797                urb->actual_length);
 798
 799         if (!test_bit(HCI_RUNNING, &hdev->flags))
 800                 return;
 801
 802         if (urb->status == 0) {
 803                 for (i = 0; i < urb->number_of_packets; i++) {
 804                         unsigned int offset = urb->iso_frame_desc[i].offset;
 805                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 806
 807                         if (urb->iso_frame_desc[i].status)
 808                                 continue;
 809
 810                         hdev->stat.byte_rx += length;
 811
 812                         if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
 813                                             length) < 0) {
 814                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 815                                 hdev->stat.err_rx++;
 816                         }
 817                 }
 818         } else if (urb->status == -ENOENT) {
 819                 /* Avoid suspend failed when usb_kill_urb */
 820                 return;
 821         }
 822
 823         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 824                 return;
 825
 826         usb_anchor_urb(urb, &data->isoc_anchor);
 827
 828         err = usb_submit_urb(urb, GFP_ATOMIC);
 829         if (err < 0) {
 830                 /* -EPERM: urb is being killed;
 831                  * -ENODEV: device got disconnected */
 832                 if (err != -EPERM && err != -ENODEV)
 833                         BT_ERR("%s urb %p failed to resubmit (%d)",
 834                                hdev->name, urb, -err);
 835                 usb_unanchor_urb(urb);
 836         }
 837 }
 838
 839 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 840 {
 841         int i, offset = 0;
 842
 843         BT_DBG("len %d mtu %d", len, mtu);
 844
 845         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 846                                         i++, offset += mtu, len -= mtu) {
 847                 urb->iso_frame_desc[i].offset = offset;
 848                 urb->iso_frame_desc[i].length = mtu;
 849         }
 850
 851         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 852                 urb->iso_frame_desc[i].offset = offset;
 853                 urb->iso_frame_desc[i].length = len;
 854                 i++;
 855         }
 856
 857         urb->number_of_packets = i;
 858 }
 859
 860 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 861 {
 862         struct btusb_data *data = hci_get_drvdata(hdev);
 863         struct urb *urb;
 864         unsigned char *buf;
 865         unsigned int pipe;
 866         int err, size;
 867
 868         BT_DBG("%s", hdev->name);
 869
 870         if (!data->isoc_rx_ep)
 871                 return -ENODEV;
 872
 873         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 874         if (!urb)
 875                 return -ENOMEM;
 876
 877         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 878                                                 BTUSB_MAX_ISOC_FRAMES;
 879
 880         buf = kmalloc(size, mem_flags);
 881         if (!buf) {
 882                 usb_free_urb(urb);
 883                 return -ENOMEM;
 884         }
 885
 886         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 887
 888         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 889                          hdev, data->isoc_rx_ep->bInterval);
 890
 891         urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
 892
 893         __fill_isoc_descriptor(urb, size,
 894                                le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 895
 896         usb_anchor_urb(urb, &data->isoc_anchor);
 897
 898         err = usb_submit_urb(urb, mem_flags);
 899         if (err < 0) {
 900                 if (err != -EPERM && err != -ENODEV)
 901                         BT_ERR("%s urb %p submission failed (%d)",
 902                                hdev->name, urb, -err);
 903                 usb_unanchor_urb(urb);
 904         }
 905
 906         usb_free_urb(urb);
 907
 908         return err;
 909 }
 910
 911 static void btusb_diag_complete(struct urb *urb)
 912 {
 913         struct hci_dev *hdev = urb->context;
 914         struct btusb_data *data = hci_get_drvdata(hdev);
 915         int err;
 916
 917         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 918                urb->actual_length);
 919
 920         if (urb->status == 0) {
 921                 struct sk_buff *skb;
 922
 923                 skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC);
 924                 if (skb) {
 925                         memcpy(skb_put(skb, urb->actual_length),
 926                                urb->transfer_buffer, urb->actual_length);
 927                         hci_recv_diag(hdev, skb);
 928                 }
 929         } else if (urb->status == -ENOENT) {
 930                 /* Avoid suspend failed when usb_kill_urb */
 931                 return;
 932         }
 933
 934         if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags))
 935                 return;
 936
 937         usb_anchor_urb(urb, &data->diag_anchor);
 938         usb_mark_last_busy(data->udev);
 939
 940         err = usb_submit_urb(urb, GFP_ATOMIC);
 941         if (err < 0) {
 942                 /* -EPERM: urb is being killed;
 943                  * -ENODEV: device got disconnected */
 944                 if (err != -EPERM && err != -ENODEV)
 945                         BT_ERR("%s urb %p failed to resubmit (%d)",
 946                                hdev->name, urb, -err);
 947                 usb_unanchor_urb(urb);
 948         }
 949 }
 950
 951 static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags)
 952 {
 953         struct btusb_data *data = hci_get_drvdata(hdev);
 954         struct urb *urb;
 955         unsigned char *buf;
 956         unsigned int pipe;
 957         int err, size = HCI_MAX_FRAME_SIZE;
 958
 959         BT_DBG("%s", hdev->name);
 960
 961         if (!data->diag_rx_ep)
 962                 return -ENODEV;
 963
 964         urb = usb_alloc_urb(0, mem_flags);
 965         if (!urb)
 966                 return -ENOMEM;
 967
 968         buf = kmalloc(size, mem_flags);
 969         if (!buf) {
 970                 usb_free_urb(urb);
 971                 return -ENOMEM;
 972         }
 973
 974         pipe = usb_rcvbulkpipe(data->udev, data->diag_rx_ep->bEndpointAddress);
 975
 976         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
 977                           btusb_diag_complete, hdev);
 978
 979         urb->transfer_flags |= URB_FREE_BUFFER;
 980
 981         usb_mark_last_busy(data->udev);
 982         usb_anchor_urb(urb, &data->diag_anchor);
 983
 984         err = usb_submit_urb(urb, mem_flags);
 985         if (err < 0) {
 986                 if (err != -EPERM && err != -ENODEV)
 987                         BT_ERR("%s urb %p submission failed (%d)",
 988                                hdev->name, urb, -err);
 989                 usb_unanchor_urb(urb);
 990         }
 991
 992         usb_free_urb(urb);
 993
 994         return err;
 995 }
 996
 997 static void btusb_tx_complete(struct urb *urb)
 998 {
 999         struct sk_buff *skb = urb->context;
1000         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1001         struct btusb_data *data = hci_get_drvdata(hdev);
1002
1003         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1004                urb->actual_length);
1005
1006         if (!test_bit(HCI_RUNNING, &hdev->flags))
1007                 goto done;
1008
1009         if (!urb->status)
1010                 hdev->stat.byte_tx += urb->transfer_buffer_length;
1011         else
1012                 hdev->stat.err_tx++;
1013
1014 done:
1015         spin_lock(&data->txlock);
1016         data->tx_in_flight--;
1017         spin_unlock(&data->txlock);
1018
1019         kfree(urb->setup_packet);
1020
1021         kfree_skb(skb);
1022 }
1023
1024 static void btusb_isoc_tx_complete(struct urb *urb)
1025 {
1026         struct sk_buff *skb = urb->context;
1027         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1028
1029         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1030                urb->actual_length);
1031
1032         if (!test_bit(HCI_RUNNING, &hdev->flags))
1033                 goto done;
1034
1035         if (!urb->status)
1036                 hdev->stat.byte_tx += urb->transfer_buffer_length;
1037         else
1038                 hdev->stat.err_tx++;
1039
1040 done:
1041         kfree(urb->setup_packet);
1042
1043         kfree_skb(skb);
1044 }
1045
1046 static int btusb_open(struct hci_dev *hdev)
1047 {
1048         struct btusb_data *data = hci_get_drvdata(hdev);
1049         int err;
1050
1051         BT_DBG("%s", hdev->name);
1052
1053         /* Patching USB firmware files prior to starting any URBs of HCI path
1054          * It is more safe to use USB bulk channel for downloading USB patch
1055          */
1056         if (data->setup_on_usb) {
1057                 err = data->setup_on_usb(hdev);
1058                 if (err < 0)
1059                         goto setup_fail;
1060         }
1061
1062         err = usb_autopm_get_interface(data->intf);
1063         if (err < 0)
1064                 return err;
1065
1066         data->intf->needs_remote_wakeup = 1;
1067
1068         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
1069                 goto done;
1070
1071         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
1072         if (err < 0)
1073                 goto failed;
1074
1075         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1076         if (err < 0) {
1077                 usb_kill_anchored_urbs(&data->intr_anchor);
1078                 goto failed;
1079         }
1080
1081         set_bit(BTUSB_BULK_RUNNING, &data->flags);
1082         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1083
1084         if (data->diag) {
1085                 if (!btusb_submit_diag_urb(hdev, GFP_KERNEL))
1086                         set_bit(BTUSB_DIAG_RUNNING, &data->flags);
1087         }
1088
1089 done:
1090         usb_autopm_put_interface(data->intf);
1091         return 0;
1092
1093 failed:
1094         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1095 setup_fail:
1096         usb_autopm_put_interface(data->intf);
1097         return err;
1098 }
1099
1100 static void btusb_stop_traffic(struct btusb_data *data)
1101 {
1102         usb_kill_anchored_urbs(&data->intr_anchor);
1103         usb_kill_anchored_urbs(&data->bulk_anchor);
1104         usb_kill_anchored_urbs(&data->isoc_anchor);
1105         usb_kill_anchored_urbs(&data->diag_anchor);
1106 }
1107
1108 static int btusb_close(struct hci_dev *hdev)
1109 {
1110         struct btusb_data *data = hci_get_drvdata(hdev);
1111         int err;
1112
1113         BT_DBG("%s", hdev->name);
1114
1115         cancel_work_sync(&data->work);
1116         cancel_work_sync(&data->waker);
1117
1118         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1119         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1120         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1121         clear_bit(BTUSB_DIAG_RUNNING, &data->flags);
1122
1123         btusb_stop_traffic(data);
1124         btusb_free_frags(data);
1125
1126         err = usb_autopm_get_interface(data->intf);
1127         if (err < 0)
1128                 goto failed;
1129
1130         data->intf->needs_remote_wakeup = 0;
1131         usb_autopm_put_interface(data->intf);
1132
1133 failed:
1134         usb_scuttle_anchored_urbs(&data->deferred);
1135         return 0;
1136 }
1137
1138 static int btusb_flush(struct hci_dev *hdev)
1139 {
1140         struct btusb_data *data = hci_get_drvdata(hdev);
1141
1142         BT_DBG("%s", hdev->name);
1143
1144         usb_kill_anchored_urbs(&data->tx_anchor);
1145         btusb_free_frags(data);
1146
1147         return 0;
1148 }
1149
1150 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
1151 {
1152         struct btusb_data *data = hci_get_drvdata(hdev);
1153         struct usb_ctrlrequest *dr;
1154         struct urb *urb;
1155         unsigned int pipe;
1156
1157         urb = usb_alloc_urb(0, GFP_KERNEL);
1158         if (!urb)
1159                 return ERR_PTR(-ENOMEM);
1160
1161         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
1162         if (!dr) {
1163                 usb_free_urb(urb);
1164                 return ERR_PTR(-ENOMEM);
1165         }
1166
1167         dr->bRequestType = data->cmdreq_type;
1168         dr->bRequest     = data->cmdreq;
1169         dr->wIndex       = 0;
1170         dr->wValue       = 0;
1171         dr->wLength      = __cpu_to_le16(skb->len);
1172
1173         pipe = usb_sndctrlpipe(data->udev, 0x00);
1174
1175         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
1176                              skb->data, skb->len, btusb_tx_complete, skb);
1177
1178         skb->dev = (void *)hdev;
1179
1180         return urb;
1181 }
1182
1183 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
1184 {
1185         struct btusb_data *data = hci_get_drvdata(hdev);
1186         struct urb *urb;
1187         unsigned int pipe;
1188
1189         if (!data->bulk_tx_ep)
1190                 return ERR_PTR(-ENODEV);
1191
1192         urb = usb_alloc_urb(0, GFP_KERNEL);
1193         if (!urb)
1194                 return ERR_PTR(-ENOMEM);
1195
1196         pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1197
1198         usb_fill_bulk_urb(urb, data->udev, pipe,
1199                           skb->data, skb->len, btusb_tx_complete, skb);
1200
1201         skb->dev = (void *)hdev;
1202
1203         return urb;
1204 }
1205
1206 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1207 {
1208         struct btusb_data *data = hci_get_drvdata(hdev);
1209         struct urb *urb;
1210         unsigned int pipe;
1211
1212         if (!data->isoc_tx_ep)
1213                 return ERR_PTR(-ENODEV);
1214
1215         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1216         if (!urb)
1217                 return ERR_PTR(-ENOMEM);
1218
1219         pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1220
1221         usb_fill_int_urb(urb, data->udev, pipe,
1222                          skb->data, skb->len, btusb_isoc_tx_complete,
1223                          skb, data->isoc_tx_ep->bInterval);
1224
1225         urb->transfer_flags  = URB_ISO_ASAP;
1226
1227         __fill_isoc_descriptor(urb, skb->len,
1228                                le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1229
1230         skb->dev = (void *)hdev;
1231
1232         return urb;
1233 }
1234
1235 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1236 {
1237         struct btusb_data *data = hci_get_drvdata(hdev);
1238         int err;
1239
1240         usb_anchor_urb(urb, &data->tx_anchor);
1241
1242         err = usb_submit_urb(urb, GFP_KERNEL);
1243         if (err < 0) {
1244                 if (err != -EPERM && err != -ENODEV)
1245                         BT_ERR("%s urb %p submission failed (%d)",
1246                                hdev->name, urb, -err);
1247                 kfree(urb->setup_packet);
1248                 usb_unanchor_urb(urb);
1249         } else {
1250                 usb_mark_last_busy(data->udev);
1251         }
1252
1253         usb_free_urb(urb);
1254         return err;
1255 }
1256
1257 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1258 {
1259         struct btusb_data *data = hci_get_drvdata(hdev);
1260         unsigned long flags;
1261         bool suspending;
1262
1263         spin_lock_irqsave(&data->txlock, flags);
1264         suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1265         if (!suspending)
1266                 data->tx_in_flight++;
1267         spin_unlock_irqrestore(&data->txlock, flags);
1268
1269         if (!suspending)
1270                 return submit_tx_urb(hdev, urb);
1271
1272         usb_anchor_urb(urb, &data->deferred);
1273         schedule_work(&data->waker);
1274
1275         usb_free_urb(urb);
1276         return 0;
1277 }
1278
1279 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1280 {
1281         struct urb *urb;
1282
1283         BT_DBG("%s", hdev->name);
1284
1285         switch (bt_cb(skb)->pkt_type) {
1286         case HCI_COMMAND_PKT:
1287                 urb = alloc_ctrl_urb(hdev, skb);
1288                 if (IS_ERR(urb))
1289                         return PTR_ERR(urb);
1290
1291                 hdev->stat.cmd_tx++;
1292                 return submit_or_queue_tx_urb(hdev, urb);
1293
1294         case HCI_ACLDATA_PKT:
1295                 urb = alloc_bulk_urb(hdev, skb);
1296                 if (IS_ERR(urb))
1297                         return PTR_ERR(urb);
1298
1299                 hdev->stat.acl_tx++;
1300                 return submit_or_queue_tx_urb(hdev, urb);
1301
1302         case HCI_SCODATA_PKT:
1303                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1304                         return -ENODEV;
1305
1306                 urb = alloc_isoc_urb(hdev, skb);
1307                 if (IS_ERR(urb))
1308                         return PTR_ERR(urb);
1309
1310                 hdev->stat.sco_tx++;
1311                 return submit_tx_urb(hdev, urb);
1312         }
1313
1314         return -EILSEQ;
1315 }
1316
1317 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1318 {
1319         struct btusb_data *data = hci_get_drvdata(hdev);
1320
1321         BT_DBG("%s evt %d", hdev->name, evt);
1322
1323         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1324                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1325                 schedule_work(&data->work);
1326         }
1327 }
1328
1329 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1330 {
1331         struct btusb_data *data = hci_get_drvdata(hdev);
1332         struct usb_interface *intf = data->isoc;
1333         struct usb_endpoint_descriptor *ep_desc;
1334         int i, err;
1335
1336         if (!data->isoc)
1337                 return -ENODEV;
1338
1339         err = usb_set_interface(data->udev, 1, altsetting);
1340         if (err < 0) {
1341                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
1342                 return err;
1343         }
1344
1345         data->isoc_altsetting = altsetting;
1346
1347         data->isoc_tx_ep = NULL;
1348         data->isoc_rx_ep = NULL;
1349
1350         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1351                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1352
1353                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1354                         data->isoc_tx_ep = ep_desc;
1355                         continue;
1356                 }
1357
1358                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1359                         data->isoc_rx_ep = ep_desc;
1360                         continue;
1361                 }
1362         }
1363
1364         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1365                 BT_ERR("%s invalid SCO descriptors", hdev->name);
1366                 return -ENODEV;
1367         }
1368
1369         return 0;
1370 }
1371
1372 static void btusb_work(struct work_struct *work)
1373 {
1374         struct btusb_data *data = container_of(work, struct btusb_data, work);
1375         struct hci_dev *hdev = data->hdev;
1376         int new_alts;
1377         int err;
1378
1379         if (data->sco_num > 0) {
1380                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1381                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1382                         if (err < 0) {
1383                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1384                                 usb_kill_anchored_urbs(&data->isoc_anchor);
1385                                 return;
1386                         }
1387
1388                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1389                 }
1390
1391                 if (hdev->voice_setting & 0x0020) {
1392                         static const int alts[3] = { 2, 4, 5 };
1393
1394                         new_alts = alts[data->sco_num - 1];
1395                 } else {
1396                         new_alts = data->sco_num;
1397                 }
1398
1399                 if (data->isoc_altsetting != new_alts) {
1400                         unsigned long flags;
1401
1402                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1403                         usb_kill_anchored_urbs(&data->isoc_anchor);
1404
1405                         /* When isochronous alternate setting needs to be
1406                          * changed, because SCO connection has been added
1407                          * or removed, a packet fragment may be left in the
1408                          * reassembling state. This could lead to wrongly
1409                          * assembled fragments.
1410                          *
1411                          * Clear outstanding fragment when selecting a new
1412                          * alternate setting.
1413                          */
1414                         spin_lock_irqsave(&data->rxlock, flags);
1415                         kfree_skb(data->sco_skb);
1416                         data->sco_skb = NULL;
1417                         spin_unlock_irqrestore(&data->rxlock, flags);
1418
1419                         if (__set_isoc_interface(hdev, new_alts) < 0)
1420                                 return;
1421                 }
1422
1423                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1424                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1425                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1426                         else
1427                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1428                 }
1429         } else {
1430                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1431                 usb_kill_anchored_urbs(&data->isoc_anchor);
1432
1433                 __set_isoc_interface(hdev, 0);
1434                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1435                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1436         }
1437 }
1438
1439 static void btusb_waker(struct work_struct *work)
1440 {
1441         struct btusb_data *data = container_of(work, struct btusb_data, waker);
1442         int err;
1443
1444         err = usb_autopm_get_interface(data->intf);
1445         if (err < 0)
1446                 return;
1447
1448         usb_autopm_put_interface(data->intf);
1449 }
1450
1451 static int btusb_setup_bcm92035(struct hci_dev *hdev)
1452 {
1453         struct sk_buff *skb;
1454         u8 val = 0x00;
1455
1456         BT_DBG("%s", hdev->name);
1457
1458         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1459         if (IS_ERR(skb))
1460                 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
1461         else
1462                 kfree_skb(skb);
1463
1464         return 0;
1465 }
1466
1467 static int btusb_setup_csr(struct hci_dev *hdev)
1468 {
1469         struct hci_rp_read_local_version *rp;
1470         struct sk_buff *skb;
1471
1472         BT_DBG("%s", hdev->name);
1473
1474         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1475                              HCI_INIT_TIMEOUT);
1476         if (IS_ERR(skb)) {
1477                 int err = PTR_ERR(skb);
1478                 BT_ERR("%s: CSR: Local version failed (%d)", hdev->name, err);
1479                 return err;
1480         }
1481
1482         if (skb->len != sizeof(struct hci_rp_read_local_version)) {
1483                 BT_ERR("%s: CSR: Local version length mismatch", hdev->name);
1484                 kfree_skb(skb);
1485                 return -EIO;
1486         }
1487
1488         rp = (struct hci_rp_read_local_version *)skb->data;
1489
1490         /* Detect controllers which aren't real CSR ones. */
1491         if (le16_to_cpu(rp->manufacturer) != 10 ||
1492             le16_to_cpu(rp->lmp_subver) == 0x0c5c) {
1493                 /* Clear the reset quirk since this is not an actual
1494                  * early Bluetooth 1.1 device from CSR.
1495                  */
1496                 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1497
1498                 /* These fake CSR controllers have all a broken
1499                  * stored link key handling and so just disable it.
1500                  */
1501                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
1502         }
1503
1504         kfree_skb(skb);
1505
1506         return 0;
1507 }
1508
1509 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1510                                                        struct intel_version *ver)
1511 {
1512         const struct firmware *fw;
1513         char fwname[64];
1514         int ret;
1515
1516         snprintf(fwname, sizeof(fwname),
1517                  "/*(DEBLOBBED)*/",
1518                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
1519                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1520                  ver->fw_build_ww, ver->fw_build_yy);
1521
1522         ret = reject_firmware(&fw, fwname, &hdev->dev);
1523         if (ret < 0) {
1524                 if (ret == -EINVAL) {
1525                         BT_ERR("%s Intel firmware file request failed (%d)",
1526                                hdev->name, ret);
1527                         return NULL;
1528                 }
1529
1530                 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1531                        hdev->name, fwname, ret);
1532
1533                 /* If the correct firmware patch file is not found, use the
1534                  * default firmware patch file instead
1535                  */
1536                 snprintf(fwname, sizeof(fwname), "/*(DEBLOBBED)*/",
1537                          ver->hw_platform, ver->hw_variant);
1538                 if (reject_firmware(&fw, fwname, &hdev->dev) < 0) {
1539                         BT_ERR("%s failed to open default Intel fw file: %s",
1540                                hdev->name, fwname);
1541                         return NULL;
1542                 }
1543         }
1544
1545         BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1546
1547         return fw;
1548 }
1549
1550 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1551                                       const struct firmware *fw,
1552                                       const u8 **fw_ptr, int *disable_patch)
1553 {
1554         struct sk_buff *skb;
1555         struct hci_command_hdr *cmd;
1556         const u8 *cmd_param;
1557         struct hci_event_hdr *evt = NULL;
1558         const u8 *evt_param = NULL;
1559         int remain = fw->size - (*fw_ptr - fw->data);
1560
1561         /* The first byte indicates the types of the patch command or event.
1562          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1563          * in the current firmware buffer doesn't start with 0x01 or
1564          * the size of remain buffer is smaller than HCI command header,
1565          * the firmware file is corrupted and it should stop the patching
1566          * process.
1567          */
1568         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1569                 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1570                 return -EINVAL;
1571         }
1572         (*fw_ptr)++;
1573         remain--;
1574
1575         cmd = (struct hci_command_hdr *)(*fw_ptr);
1576         *fw_ptr += sizeof(*cmd);
1577         remain -= sizeof(*cmd);
1578
1579         /* Ensure that the remain firmware data is long enough than the length
1580          * of command parameter. If not, the firmware file is corrupted.
1581          */
1582         if (remain < cmd->plen) {
1583                 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1584                 return -EFAULT;
1585         }
1586
1587         /* If there is a command that loads a patch in the firmware
1588          * file, then enable the patch upon success, otherwise just
1589          * disable the manufacturer mode, for example patch activation
1590          * is not required when the default firmware patch file is used
1591          * because there are no patch data to load.
1592          */
1593         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1594                 *disable_patch = 0;
1595
1596         cmd_param = *fw_ptr;
1597         *fw_ptr += cmd->plen;
1598         remain -= cmd->plen;
1599
1600         /* This reads the expected events when the above command is sent to the
1601          * device. Some vendor commands expects more than one events, for
1602          * example command status event followed by vendor specific event.
1603          * For this case, it only keeps the last expected event. so the command
1604          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1605          * last expected event.
1606          */
1607         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1608                 (*fw_ptr)++;
1609                 remain--;
1610
1611                 evt = (struct hci_event_hdr *)(*fw_ptr);
1612                 *fw_ptr += sizeof(*evt);
1613                 remain -= sizeof(*evt);
1614
1615                 if (remain < evt->plen) {
1616                         BT_ERR("%s Intel fw corrupted: invalid evt len",
1617                                hdev->name);
1618                         return -EFAULT;
1619                 }
1620
1621                 evt_param = *fw_ptr;
1622                 *fw_ptr += evt->plen;
1623                 remain -= evt->plen;
1624         }
1625
1626         /* Every HCI commands in the firmware file has its correspond event.
1627          * If event is not found or remain is smaller than zero, the firmware
1628          * file is corrupted.
1629          */
1630         if (!evt || !evt_param || remain < 0) {
1631                 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1632                 return -EFAULT;
1633         }
1634
1635         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1636                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1637         if (IS_ERR(skb)) {
1638                 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1639                        hdev->name, cmd->opcode, PTR_ERR(skb));
1640                 return PTR_ERR(skb);
1641         }
1642
1643         /* It ensures that the returned event matches the event data read from
1644          * the firmware file. At fist, it checks the length and then
1645          * the contents of the event.
1646          */
1647         if (skb->len != evt->plen) {
1648                 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1649                        le16_to_cpu(cmd->opcode));
1650                 kfree_skb(skb);
1651                 return -EFAULT;
1652         }
1653
1654         if (memcmp(skb->data, evt_param, evt->plen)) {
1655                 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1656                        hdev->name, le16_to_cpu(cmd->opcode));
1657                 kfree_skb(skb);
1658                 return -EFAULT;
1659         }
1660         kfree_skb(skb);
1661
1662         return 0;
1663 }
1664
1665 static int btusb_setup_intel(struct hci_dev *hdev)
1666 {
1667         struct sk_buff *skb;
1668         const struct firmware *fw;
1669         const u8 *fw_ptr;
1670         int disable_patch;
1671         struct intel_version *ver;
1672
1673         const u8 mfg_enable[] = { 0x01, 0x00 };
1674         const u8 mfg_disable[] = { 0x00, 0x00 };
1675         const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
1676         const u8 mfg_reset_activate[] = { 0x00, 0x02 };
1677
1678         BT_DBG("%s", hdev->name);
1679
1680         /* The controller has a bug with the first HCI command sent to it
1681          * returning number of completed commands as zero. This would stall the
1682          * command processing in the Bluetooth core.
1683          *
1684          * As a workaround, send HCI Reset command first which will reset the
1685          * number of completed commands and allow normal command processing
1686          * from now on.
1687          */
1688         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1689         if (IS_ERR(skb)) {
1690                 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1691                        hdev->name, PTR_ERR(skb));
1692                 return PTR_ERR(skb);
1693         }
1694         kfree_skb(skb);
1695
1696         /* Read Intel specific controller version first to allow selection of
1697          * which firmware file to load.
1698          *
1699          * The returned information are hardware variant and revision plus
1700          * firmware variant, revision and build number.
1701          */
1702         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1703         if (IS_ERR(skb)) {
1704                 BT_ERR("%s reading Intel fw version command failed (%ld)",
1705                        hdev->name, PTR_ERR(skb));
1706                 return PTR_ERR(skb);
1707         }
1708
1709         if (skb->len != sizeof(*ver)) {
1710                 BT_ERR("%s Intel version event length mismatch", hdev->name);
1711                 kfree_skb(skb);
1712                 return -EIO;
1713         }
1714
1715         ver = (struct intel_version *)skb->data;
1716
1717         BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1718                 hdev->name, ver->hw_platform, ver->hw_variant,
1719                 ver->hw_revision, ver->fw_variant,  ver->fw_revision,
1720                 ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
1721                 ver->fw_patch_num);
1722
1723         /* fw_patch_num indicates the version of patch the device currently
1724          * have. If there is no patch data in the device, it is always 0x00.
1725          * So, if it is other than 0x00, no need to patch the device again.
1726          */
1727         if (ver->fw_patch_num) {
1728                 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1729                         hdev->name, ver->fw_patch_num);
1730                 kfree_skb(skb);
1731                 goto complete;
1732         }
1733
1734         /* Opens the firmware patch file based on the firmware version read
1735          * from the controller. If it fails to open the matching firmware
1736          * patch file, it tries to open the default firmware patch file.
1737          * If no patch file is found, allow the device to operate without
1738          * a patch.
1739          */
1740         fw = btusb_setup_intel_get_fw(hdev, ver);
1741         if (!fw) {
1742                 kfree_skb(skb);
1743                 goto complete;
1744         }
1745         fw_ptr = fw->data;
1746
1747         kfree_skb(skb);
1748
1749         /* This Intel specific command enables the manufacturer mode of the
1750          * controller.
1751          *
1752          * Only while this mode is enabled, the driver can download the
1753          * firmware patch data and configuration parameters.
1754          */
1755         skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
1756         if (IS_ERR(skb)) {
1757                 BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
1758                        hdev->name, PTR_ERR(skb));
1759                 release_firmware(fw);
1760                 return PTR_ERR(skb);
1761         }
1762
1763         kfree_skb(skb);
1764
1765         disable_patch = 1;
1766
1767         /* The firmware data file consists of list of Intel specific HCI
1768          * commands and its expected events. The first byte indicates the
1769          * type of the message, either HCI command or HCI event.
1770          *
1771          * It reads the command and its expected event from the firmware file,
1772          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1773          * the returned event is compared with the event read from the firmware
1774          * file and it will continue until all the messages are downloaded to
1775          * the controller.
1776          *
1777          * Once the firmware patching is completed successfully,
1778          * the manufacturer mode is disabled with reset and activating the
1779          * downloaded patch.
1780          *
1781          * If the firmware patching fails, the manufacturer mode is
1782          * disabled with reset and deactivating the patch.
1783          *
1784          * If the default patch file is used, no reset is done when disabling
1785          * the manufacturer.
1786          */
1787         while (fw->size > fw_ptr - fw->data) {
1788                 int ret;
1789
1790                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1791                                                  &disable_patch);
1792                 if (ret < 0)
1793                         goto exit_mfg_deactivate;
1794         }
1795
1796         release_firmware(fw);
1797
1798         if (disable_patch)
1799                 goto exit_mfg_disable;
1800
1801         /* Patching completed successfully and disable the manufacturer mode
1802          * with reset and activate the downloaded firmware patches.
1803          */
1804         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
1805                              mfg_reset_activate, HCI_INIT_TIMEOUT);
1806         if (IS_ERR(skb)) {
1807                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1808                        hdev->name, PTR_ERR(skb));
1809                 return PTR_ERR(skb);
1810         }
1811         kfree_skb(skb);
1812
1813         BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1814                 hdev->name);
1815
1816         goto complete;
1817
1818 exit_mfg_disable:
1819         /* Disable the manufacturer mode without reset */
1820         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
1821                              HCI_INIT_TIMEOUT);
1822         if (IS_ERR(skb)) {
1823                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1824                        hdev->name, PTR_ERR(skb));
1825                 return PTR_ERR(skb);
1826         }
1827         kfree_skb(skb);
1828
1829         BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1830
1831         goto complete;
1832
1833 exit_mfg_deactivate:
1834         release_firmware(fw);
1835
1836         /* Patching failed. Disable the manufacturer mode with reset and
1837          * deactivate the downloaded firmware patches.
1838          */
1839         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
1840                              mfg_reset_deactivate, HCI_INIT_TIMEOUT);
1841         if (IS_ERR(skb)) {
1842                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1843                        hdev->name, PTR_ERR(skb));
1844                 return PTR_ERR(skb);
1845         }
1846         kfree_skb(skb);
1847
1848         BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1849                 hdev->name);
1850
1851 complete:
1852         /* Set the event mask for Intel specific vendor events. This enables
1853          * a few extra events that are useful during general operation.
1854          */
1855         btintel_set_event_mask_mfg(hdev, false);
1856
1857         btintel_check_bdaddr(hdev);
1858         return 0;
1859 }
1860
1861 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
1862 {
1863         struct sk_buff *skb;
1864         struct hci_event_hdr *hdr;
1865         struct hci_ev_cmd_complete *evt;
1866
1867         skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_ATOMIC);
1868         if (!skb)
1869                 return -ENOMEM;
1870
1871         hdr = (struct hci_event_hdr *)skb_put(skb, sizeof(*hdr));
1872         hdr->evt = HCI_EV_CMD_COMPLETE;
1873         hdr->plen = sizeof(*evt) + 1;
1874
1875         evt = (struct hci_ev_cmd_complete *)skb_put(skb, sizeof(*evt));
1876         evt->ncmd = 0x01;
1877         evt->opcode = cpu_to_le16(opcode);
1878
1879         *skb_put(skb, 1) = 0x00;
1880
1881         bt_cb(skb)->pkt_type = HCI_EVENT_PKT;
1882
1883         return hci_recv_frame(hdev, skb);
1884 }
1885
1886 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
1887                                  int count)
1888 {
1889         /* When the device is in bootloader mode, then it can send
1890          * events via the bulk endpoint. These events are treated the
1891          * same way as the ones received from the interrupt endpoint.
1892          */
1893         if (test_bit(BTUSB_BOOTLOADER, &data->flags))
1894                 return btusb_recv_intr(data, buffer, count);
1895
1896         return btusb_recv_bulk(data, buffer, count);
1897 }
1898
1899 static void btusb_intel_bootup(struct btusb_data *data, const void *ptr,
1900                                unsigned int len)
1901 {
1902         const struct intel_bootup *evt = ptr;
1903
1904         if (len != sizeof(*evt))
1905                 return;
1906
1907         if (test_and_clear_bit(BTUSB_BOOTING, &data->flags)) {
1908                 smp_mb__after_atomic();
1909                 wake_up_bit(&data->flags, BTUSB_BOOTING);
1910         }
1911 }
1912
1913 static void btusb_intel_secure_send_result(struct btusb_data *data,
1914                                            const void *ptr, unsigned int len)
1915 {
1916         const struct intel_secure_send_result *evt = ptr;
1917
1918         if (len != sizeof(*evt))
1919                 return;
1920
1921         if (evt->result)
1922                 set_bit(BTUSB_FIRMWARE_FAILED, &data->flags);
1923
1924         if (test_and_clear_bit(BTUSB_DOWNLOADING, &data->flags) &&
1925             test_bit(BTUSB_FIRMWARE_LOADED, &data->flags)) {
1926                 smp_mb__after_atomic();
1927                 wake_up_bit(&data->flags, BTUSB_DOWNLOADING);
1928         }
1929 }
1930
1931 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
1932 {
1933         struct btusb_data *data = hci_get_drvdata(hdev);
1934
1935         if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1936                 struct hci_event_hdr *hdr = (void *)skb->data;
1937
1938                 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
1939                     hdr->plen > 0) {
1940                         const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
1941                         unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
1942
1943                         switch (skb->data[2]) {
1944                         case 0x02:
1945                                 /* When switching to the operational firmware
1946                                  * the device sends a vendor specific event
1947                                  * indicating that the bootup completed.
1948                                  */
1949                                 btusb_intel_bootup(data, ptr, len);
1950                                 break;
1951                         case 0x06:
1952                                 /* When the firmware loading completes the
1953                                  * device sends out a vendor specific event
1954                                  * indicating the result of the firmware
1955                                  * loading.
1956                                  */
1957                                 btusb_intel_secure_send_result(data, ptr, len);
1958                                 break;
1959                         }
1960                 }
1961         }
1962
1963         return hci_recv_frame(hdev, skb);
1964 }
1965
1966 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
1967 {
1968         struct btusb_data *data = hci_get_drvdata(hdev);
1969         struct urb *urb;
1970
1971         BT_DBG("%s", hdev->name);
1972
1973         switch (bt_cb(skb)->pkt_type) {
1974         case HCI_COMMAND_PKT:
1975                 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1976                         struct hci_command_hdr *cmd = (void *)skb->data;
1977                         __u16 opcode = le16_to_cpu(cmd->opcode);
1978
1979                         /* When in bootloader mode and the command 0xfc09
1980                          * is received, it needs to be send down the
1981                          * bulk endpoint. So allocate a bulk URB instead.
1982                          */
1983                         if (opcode == 0xfc09)
1984                                 urb = alloc_bulk_urb(hdev, skb);
1985                         else
1986                                 urb = alloc_ctrl_urb(hdev, skb);
1987
1988                         /* When the 0xfc01 command is issued to boot into
1989                          * the operational firmware, it will actually not
1990                          * send a command complete event. To keep the flow
1991                          * control working inject that event here.
1992                          */
1993                         if (opcode == 0xfc01)
1994                                 inject_cmd_complete(hdev, opcode);
1995                 } else {
1996                         urb = alloc_ctrl_urb(hdev, skb);
1997                 }
1998                 if (IS_ERR(urb))
1999                         return PTR_ERR(urb);
2000
2001                 hdev->stat.cmd_tx++;
2002                 return submit_or_queue_tx_urb(hdev, urb);
2003
2004         case HCI_ACLDATA_PKT:
2005                 urb = alloc_bulk_urb(hdev, skb);
2006                 if (IS_ERR(urb))
2007                         return PTR_ERR(urb);
2008
2009                 hdev->stat.acl_tx++;
2010                 return submit_or_queue_tx_urb(hdev, urb);
2011
2012         case HCI_SCODATA_PKT:
2013                 if (hci_conn_num(hdev, SCO_LINK) < 1)
2014                         return -ENODEV;
2015
2016                 urb = alloc_isoc_urb(hdev, skb);
2017                 if (IS_ERR(urb))
2018                         return PTR_ERR(urb);
2019
2020                 hdev->stat.sco_tx++;
2021                 return submit_tx_urb(hdev, urb);
2022         }
2023
2024         return -EILSEQ;
2025 }
2026
2027 static int btusb_setup_intel_new(struct hci_dev *hdev)
2028 {
2029         static const u8 reset_param[] = { 0x00, 0x01, 0x00, 0x01,
2030                                           0x00, 0x08, 0x04, 0x00 };
2031         struct btusb_data *data = hci_get_drvdata(hdev);
2032         struct sk_buff *skb;
2033         struct intel_version *ver;
2034         struct intel_boot_params *params;
2035         const struct firmware *fw;
2036         const u8 *fw_ptr;
2037         u32 frag_len;
2038         char fwname[64];
2039         ktime_t calltime, delta, rettime;
2040         unsigned long long duration;
2041         int err;
2042
2043         BT_DBG("%s", hdev->name);
2044
2045         calltime = ktime_get();
2046
2047         /* Read the Intel version information to determine if the device
2048          * is in bootloader mode or if it already has operational firmware
2049          * loaded.
2050          */
2051         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
2052         if (IS_ERR(skb)) {
2053                 BT_ERR("%s: Reading Intel version information failed (%ld)",
2054                        hdev->name, PTR_ERR(skb));
2055                 return PTR_ERR(skb);
2056         }
2057
2058         if (skb->len != sizeof(*ver)) {
2059                 BT_ERR("%s: Intel version event size mismatch", hdev->name);
2060                 kfree_skb(skb);
2061                 return -EILSEQ;
2062         }
2063
2064         ver = (struct intel_version *)skb->data;
2065
2066         /* The hardware platform number has a fixed value of 0x37 and
2067          * for now only accept this single value.
2068          */
2069         if (ver->hw_platform != 0x37) {
2070                 BT_ERR("%s: Unsupported Intel hardware platform (%u)",
2071                        hdev->name, ver->hw_platform);
2072                 kfree_skb(skb);
2073                 return -EINVAL;
2074         }
2075
2076         /* At the moment the iBT 3.0 hardware variants 0x0b (LnP/SfP)
2077          * and 0x0c (WsP) are supported by this firmware loading method.
2078          *
2079          * This check has been put in place to ensure correct forward
2080          * compatibility options when newer hardware variants come along.
2081          */
2082         if (ver->hw_variant != 0x0b && ver->hw_variant != 0x0c) {
2083                 BT_ERR("%s: Unsupported Intel hardware variant (%u)",
2084                        hdev->name, ver->hw_variant);
2085                 kfree_skb(skb);
2086                 return -EINVAL;
2087         }
2088
2089         btintel_version_info(hdev, ver);
2090
2091         /* The firmware variant determines if the device is in bootloader
2092          * mode or is running operational firmware. The value 0x06 identifies
2093          * the bootloader and the value 0x23 identifies the operational
2094          * firmware.
2095          *
2096          * When the operational firmware is already present, then only
2097          * the check for valid Bluetooth device address is needed. This
2098          * determines if the device will be added as configured or
2099          * unconfigured controller.
2100          *
2101          * It is not possible to use the Secure Boot Parameters in this
2102          * case since that command is only available in bootloader mode.
2103          */
2104         if (ver->fw_variant == 0x23) {
2105                 kfree_skb(skb);
2106                 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2107                 btintel_check_bdaddr(hdev);
2108                 return 0;
2109         }
2110
2111         /* If the device is not in bootloader mode, then the only possible
2112          * choice is to return an error and abort the device initialization.
2113          */
2114         if (ver->fw_variant != 0x06) {
2115                 BT_ERR("%s: Unsupported Intel firmware variant (%u)",
2116                        hdev->name, ver->fw_variant);
2117                 kfree_skb(skb);
2118                 return -ENODEV;
2119         }
2120
2121         kfree_skb(skb);
2122
2123         /* Read the secure boot parameters to identify the operating
2124          * details of the bootloader.
2125          */
2126         skb = __hci_cmd_sync(hdev, 0xfc0d, 0, NULL, HCI_INIT_TIMEOUT);
2127         if (IS_ERR(skb)) {
2128                 BT_ERR("%s: Reading Intel boot parameters failed (%ld)",
2129                        hdev->name, PTR_ERR(skb));
2130                 return PTR_ERR(skb);
2131         }
2132
2133         if (skb->len != sizeof(*params)) {
2134                 BT_ERR("%s: Intel boot parameters size mismatch", hdev->name);
2135                 kfree_skb(skb);
2136                 return -EILSEQ;
2137         }
2138
2139         params = (struct intel_boot_params *)skb->data;
2140
2141         BT_INFO("%s: Device revision is %u", hdev->name,
2142                 le16_to_cpu(params->dev_revid));
2143
2144         BT_INFO("%s: Secure boot is %s", hdev->name,
2145                 params->secure_boot ? "enabled" : "disabled");
2146
2147         BT_INFO("%s: OTP lock is %s", hdev->name,
2148                 params->otp_lock ? "enabled" : "disabled");
2149
2150         BT_INFO("%s: API lock is %s", hdev->name,
2151                 params->api_lock ? "enabled" : "disabled");
2152
2153         BT_INFO("%s: Debug lock is %s", hdev->name,
2154                 params->debug_lock ? "enabled" : "disabled");
2155
2156         BT_INFO("%s: Minimum firmware build %u week %u %u", hdev->name,
2157                 params->min_fw_build_nn, params->min_fw_build_cw,
2158                 2000 + params->min_fw_build_yy);
2159
2160         /* It is required that every single firmware fragment is acknowledged
2161          * with a command complete event. If the boot parameters indicate
2162          * that this bootloader does not send them, then abort the setup.
2163          */
2164         if (params->limited_cce != 0x00) {
2165                 BT_ERR("%s: Unsupported Intel firmware loading method (%u)",
2166                        hdev->name, params->limited_cce);
2167                 kfree_skb(skb);
2168                 return -EINVAL;
2169         }
2170
2171         /* If the OTP has no valid Bluetooth device address, then there will
2172          * also be no valid address for the operational firmware.
2173          */
2174         if (!bacmp(&params->otp_bdaddr, BDADDR_ANY)) {
2175                 BT_INFO("%s: No device address configured", hdev->name);
2176                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2177         }
2178
2179         /* With this Intel bootloader only the hardware variant and device
2180          * revision information are used to select the right firmware.
2181          *
2182          * Currently this bootloader support is limited to hardware variant
2183          * iBT 3.0 (LnP/SfP) which is identified by the value 11 (0x0b).
2184          */
2185         snprintf(fwname, sizeof(fwname), "/*(DEBLOBBED)*/",
2186                  le16_to_cpu(params->dev_revid));
2187
2188         err = reject_firmware(&fw, fwname, &hdev->dev);
2189         if (err < 0) {
2190                 BT_ERR("%s: Failed to load Intel firmware file (%d)",
2191                        hdev->name, err);
2192                 kfree_skb(skb);
2193                 return err;
2194         }
2195
2196         BT_INFO("%s: Found device firmware: %s", hdev->name, fwname);
2197
2198         /* Save the DDC file name for later use to apply once the firmware
2199          * downloading is done.
2200          */
2201         snprintf(fwname, sizeof(fwname), "intel/ibt-11-%u.ddc",
2202                  le16_to_cpu(params->dev_revid));
2203
2204         kfree_skb(skb);
2205
2206         if (fw->size < 644) {
2207                 BT_ERR("%s: Invalid size of firmware file (%zu)",
2208                        hdev->name, fw->size);
2209                 err = -EBADF;
2210                 goto done;
2211         }
2212
2213         set_bit(BTUSB_DOWNLOADING, &data->flags);
2214
2215         /* Start the firmware download transaction with the Init fragment
2216          * represented by the 128 bytes of CSS header.
2217          */
2218         err = btintel_secure_send(hdev, 0x00, 128, fw->data);
2219         if (err < 0) {
2220                 BT_ERR("%s: Failed to send firmware header (%d)",
2221                        hdev->name, err);
2222                 goto done;
2223         }
2224
2225         /* Send the 256 bytes of public key information from the firmware
2226          * as the PKey fragment.
2227          */
2228         err = btintel_secure_send(hdev, 0x03, 256, fw->data + 128);
2229         if (err < 0) {
2230                 BT_ERR("%s: Failed to send firmware public key (%d)",
2231                        hdev->name, err);
2232                 goto done;
2233         }
2234
2235         /* Send the 256 bytes of signature information from the firmware
2236          * as the Sign fragment.
2237          */
2238         err = btintel_secure_send(hdev, 0x02, 256, fw->data + 388);
2239         if (err < 0) {
2240                 BT_ERR("%s: Failed to send firmware signature (%d)",
2241                        hdev->name, err);
2242                 goto done;
2243         }
2244
2245         fw_ptr = fw->data + 644;
2246         frag_len = 0;
2247
2248         while (fw_ptr - fw->data < fw->size) {
2249                 struct hci_command_hdr *cmd = (void *)(fw_ptr + frag_len);
2250
2251                 frag_len += sizeof(*cmd) + cmd->plen;
2252
2253                 /* The parameter length of the secure send command requires
2254                  * a 4 byte alignment. It happens so that the firmware file
2255                  * contains proper Intel_NOP commands to align the fragments
2256                  * as needed.
2257                  *
2258                  * Send set of commands with 4 byte alignment from the
2259                  * firmware data buffer as a single Data fragement.
2260                  */
2261                 if (!(frag_len % 4)) {
2262                         err = btintel_secure_send(hdev, 0x01, frag_len, fw_ptr);
2263                         if (err < 0) {
2264                                 BT_ERR("%s: Failed to send firmware data (%d)",
2265                                        hdev->name, err);
2266                                 goto done;
2267                         }
2268
2269                         fw_ptr += frag_len;
2270                         frag_len = 0;
2271                 }
2272         }
2273
2274         set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2275
2276         BT_INFO("%s: Waiting for firmware download to complete", hdev->name);
2277
2278         /* Before switching the device into operational mode and with that
2279          * booting the loaded firmware, wait for the bootloader notification
2280          * that all fragments have been successfully received.
2281          *
2282          * When the event processing receives the notification, then the
2283          * BTUSB_DOWNLOADING flag will be cleared.
2284          *
2285          * The firmware loading should not take longer than 5 seconds
2286          * and thus just timeout if that happens and fail the setup
2287          * of this device.
2288          */
2289         err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
2290                                   TASK_INTERRUPTIBLE,
2291                                   msecs_to_jiffies(5000));
2292         if (err == 1) {
2293                 BT_ERR("%s: Firmware loading interrupted", hdev->name);
2294                 err = -EINTR;
2295                 goto done;
2296         }
2297
2298         if (err) {
2299                 BT_ERR("%s: Firmware loading timeout", hdev->name);
2300                 err = -ETIMEDOUT;
2301                 goto done;
2302         }
2303
2304         if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) {
2305                 BT_ERR("%s: Firmware loading failed", hdev->name);
2306                 err = -ENOEXEC;
2307                 goto done;
2308         }
2309
2310         rettime = ktime_get();
2311         delta = ktime_sub(rettime, calltime);
2312         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2313
2314         BT_INFO("%s: Firmware loaded in %llu usecs", hdev->name, duration);
2315
2316 done:
2317         release_firmware(fw);
2318
2319         if (err < 0)
2320                 return err;
2321
2322         calltime = ktime_get();
2323
2324         set_bit(BTUSB_BOOTING, &data->flags);
2325
2326         skb = __hci_cmd_sync(hdev, 0xfc01, sizeof(reset_param), reset_param,
2327                              HCI_INIT_TIMEOUT);
2328         if (IS_ERR(skb))
2329                 return PTR_ERR(skb);
2330
2331         kfree_skb(skb);
2332
2333         /* The bootloader will not indicate when the device is ready. This
2334          * is done by the operational firmware sending bootup notification.
2335          *
2336          * Booting into operational firmware should not take longer than
2337          * 1 second. However if that happens, then just fail the setup
2338          * since something went wrong.
2339          */
2340         BT_INFO("%s: Waiting for device to boot", hdev->name);
2341
2342         err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING,
2343                                   TASK_INTERRUPTIBLE,
2344                                   msecs_to_jiffies(1000));
2345
2346         if (err == 1) {
2347                 BT_ERR("%s: Device boot interrupted", hdev->name);
2348                 return -EINTR;
2349         }
2350
2351         if (err) {
2352                 BT_ERR("%s: Device boot timeout", hdev->name);
2353                 return -ETIMEDOUT;
2354         }
2355
2356         rettime = ktime_get();
2357         delta = ktime_sub(rettime, calltime);
2358         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2359
2360         BT_INFO("%s: Device booted in %llu usecs", hdev->name, duration);
2361
2362         clear_bit(BTUSB_BOOTLOADER, &data->flags);
2363
2364         /* Once the device is running in operational mode, it needs to apply
2365          * the device configuration (DDC) parameters.
2366          *
2367          * The device can work without DDC parameters, so even if it fails
2368          * to load the file, no need to fail the setup.
2369          */
2370         btintel_load_ddc_config(hdev, fwname);
2371
2372         /* Set the event mask for Intel specific vendor events. This enables
2373          * a few extra events that are useful during general operation. It
2374          * does not enable any debugging related events.
2375          *
2376          * The device will function correctly without these events enabled
2377          * and thus no need to fail the setup.
2378          */
2379         btintel_set_event_mask(hdev, false);
2380
2381         return 0;
2382 }
2383
2384 static int btusb_shutdown_intel(struct hci_dev *hdev)
2385 {
2386         struct sk_buff *skb;
2387         long ret;
2388
2389         /* Some platforms have an issue with BT LED when the interface is
2390          * down or BT radio is turned off, which takes 5 seconds to BT LED
2391          * goes off. This command turns off the BT LED immediately.
2392          */
2393         skb = __hci_cmd_sync(hdev, 0xfc3f, 0, NULL, HCI_INIT_TIMEOUT);
2394         if (IS_ERR(skb)) {
2395                 ret = PTR_ERR(skb);
2396                 BT_ERR("%s: turning off Intel device LED failed (%ld)",
2397                        hdev->name, ret);
2398                 return ret;
2399         }
2400         kfree_skb(skb);
2401
2402         return 0;
2403 }
2404
2405 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
2406                                     const bdaddr_t *bdaddr)
2407 {
2408         struct sk_buff *skb;
2409         u8 buf[8];
2410         long ret;
2411
2412         buf[0] = 0xfe;
2413         buf[1] = sizeof(bdaddr_t);
2414         memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
2415
2416         skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2417         if (IS_ERR(skb)) {
2418                 ret = PTR_ERR(skb);
2419                 BT_ERR("%s: changing Marvell device address failed (%ld)",
2420                        hdev->name, ret);
2421                 return ret;
2422         }
2423         kfree_skb(skb);
2424
2425         return 0;
2426 }
2427
2428 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
2429                                     const bdaddr_t *bdaddr)
2430 {
2431         struct sk_buff *skb;
2432         u8 buf[10];
2433         long ret;
2434
2435         buf[0] = 0x01;
2436         buf[1] = 0x01;
2437         buf[2] = 0x00;
2438         buf[3] = sizeof(bdaddr_t);
2439         memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
2440
2441         skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2442         if (IS_ERR(skb)) {
2443                 ret = PTR_ERR(skb);
2444                 BT_ERR("%s: Change address command failed (%ld)",
2445                        hdev->name, ret);
2446                 return ret;
2447         }
2448         kfree_skb(skb);
2449
2450         return 0;
2451 }
2452
2453 #define QCA_DFU_PACKET_LEN      4096
2454
2455 #define QCA_GET_TARGET_VERSION  0x09
2456 #define QCA_CHECK_STATUS        0x05
2457 #define QCA_DFU_DOWNLOAD        0x01
2458
2459 #define QCA_SYSCFG_UPDATED      0x40
2460 #define QCA_PATCH_UPDATED       0x80
2461 #define QCA_DFU_TIMEOUT         3000
2462
2463 struct qca_version {
2464         __le32  rom_version;
2465         __le32  patch_version;
2466         __le32  ram_version;
2467         __le32  ref_clock;
2468         __u8    reserved[4];
2469 } __packed;
2470
2471 struct qca_rampatch_version {
2472         __le16  rom_version;
2473         __le16  patch_version;
2474 } __packed;
2475
2476 struct qca_device_info {
2477         u32     rom_version;
2478         u8      rampatch_hdr;   /* length of header in rampatch */
2479         u8      nvm_hdr;        /* length of header in NVM */
2480         u8      ver_offset;     /* offset of version structure in rampatch */
2481 };
2482
2483 static const struct qca_device_info qca_devices_table[] = {
2484         { 0x00000100, 20, 4, 10 }, /* Rome 1.0 */
2485         { 0x00000101, 20, 4, 10 }, /* Rome 1.1 */
2486         { 0x00000200, 28, 4, 18 }, /* Rome 2.0 */
2487         { 0x00000201, 28, 4, 18 }, /* Rome 2.1 */
2488         { 0x00000300, 28, 4, 18 }, /* Rome 3.0 */
2489         { 0x00000302, 28, 4, 18 }, /* Rome 3.2 */
2490 };
2491
2492 static int btusb_qca_send_vendor_req(struct hci_dev *hdev, u8 request,
2493                                      void *data, u16 size)
2494 {
2495         struct btusb_data *btdata = hci_get_drvdata(hdev);
2496         struct usb_device *udev = btdata->udev;
2497         int pipe, err;
2498         u8 *buf;
2499
2500         buf = kmalloc(size, GFP_KERNEL);
2501         if (!buf)
2502                 return -ENOMEM;
2503
2504         /* Found some of USB hosts have IOT issues with ours so that we should
2505          * not wait until HCI layer is ready.
2506          */
2507         pipe = usb_rcvctrlpipe(udev, 0);
2508         err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
2509                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2510         if (err < 0) {
2511                 BT_ERR("%s: Failed to access otp area (%d)", hdev->name, err);
2512                 goto done;
2513         }
2514
2515         memcpy(data, buf, size);
2516
2517 done:
2518         kfree(buf);
2519
2520         return err;
2521 }
2522
2523 static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
2524                                        const struct firmware *firmware,
2525                                        size_t hdr_size)
2526 {
2527         struct btusb_data *btdata = hci_get_drvdata(hdev);
2528         struct usb_device *udev = btdata->udev;
2529         size_t count, size, sent = 0;
2530         int pipe, len, err;
2531         u8 *buf;
2532
2533         buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
2534         if (!buf)
2535                 return -ENOMEM;
2536
2537         count = firmware->size;
2538
2539         size = min_t(size_t, count, hdr_size);
2540         memcpy(buf, firmware->data, size);
2541
2542         /* USB patches should go down to controller through USB path
2543          * because binary format fits to go down through USB channel.
2544          * USB control path is for patching headers and USB bulk is for
2545          * patch body.
2546          */
2547         pipe = usb_sndctrlpipe(udev, 0);
2548         err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
2549                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2550         if (err < 0) {
2551                 BT_ERR("%s: Failed to send headers (%d)", hdev->name, err);
2552                 goto done;
2553         }
2554
2555         sent += size;
2556         count -= size;
2557
2558         /* ep2 need time to switch from function acl to function dfu,
2559          * so we add 20ms delay here.
2560          */
2561         msleep(20);
2562
2563         while (count) {
2564                 size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
2565
2566                 memcpy(buf, firmware->data + sent, size);
2567
2568                 pipe = usb_sndbulkpipe(udev, 0x02);
2569                 err = usb_bulk_msg(udev, pipe, buf, size, &len,
2570                                    QCA_DFU_TIMEOUT);
2571                 if (err < 0) {
2572                         BT_ERR("%s: Failed to send body at %zd of %zd (%d)",
2573                                hdev->name, sent, firmware->size, err);
2574                         break;
2575                 }
2576
2577                 if (size != len) {
2578                         BT_ERR("%s: Failed to get bulk buffer", hdev->name);
2579                         err = -EILSEQ;
2580                         break;
2581                 }
2582
2583                 sent  += size;
2584                 count -= size;
2585         }
2586
2587 done:
2588         kfree(buf);
2589         return err;
2590 }
2591
2592 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
2593                                          struct qca_version *ver,
2594                                          const struct qca_device_info *info)
2595 {
2596         struct qca_rampatch_version *rver;
2597         const struct firmware *fw;
2598         u32 ver_rom, ver_patch;
2599         u16 rver_rom, rver_patch;
2600         char fwname[64];
2601         int err;
2602
2603         ver_rom = le32_to_cpu(ver->rom_version);
2604         ver_patch = le32_to_cpu(ver->patch_version);
2605
2606         snprintf(fwname, sizeof(fwname), "/*(DEBLOBBED)*/", ver_rom);
2607
2608         err = reject_firmware(&fw, fwname, &hdev->dev);
2609         if (err) {
2610                 BT_ERR("%s: failed to request rampatch file: %s (%d)",
2611                        hdev->name, fwname, err);
2612                 return err;
2613         }
2614
2615         BT_INFO("%s: using rampatch file: %s", hdev->name, fwname);
2616
2617         rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
2618         rver_rom = le16_to_cpu(rver->rom_version);
2619         rver_patch = le16_to_cpu(rver->patch_version);
2620
2621         BT_INFO("%s: QCA: patch rome 0x%x build 0x%x, firmware rome 0x%x "
2622                 "build 0x%x", hdev->name, rver_rom, rver_patch, ver_rom,
2623                 ver_patch);
2624
2625         if (rver_rom != ver_rom || rver_patch <= ver_patch) {
2626                 BT_ERR("%s: rampatch file version did not match with firmware",
2627                        hdev->name);
2628                 err = -EINVAL;
2629                 goto done;
2630         }
2631
2632         err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
2633
2634 done:
2635         release_firmware(fw);
2636
2637         return err;
2638 }
2639
2640 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
2641                                     struct qca_version *ver,
2642                                     const struct qca_device_info *info)
2643 {
2644         const struct firmware *fw;
2645         char fwname[64];
2646         int err;
2647
2648         snprintf(fwname, sizeof(fwname), "/*(DEBLOBBED)*/",
2649                  le32_to_cpu(ver->rom_version));
2650
2651         err = reject_firmware(&fw, fwname, &hdev->dev);
2652         if (err) {
2653                 BT_ERR("%s: failed to request NVM file: %s (%d)",
2654                        hdev->name, fwname, err);
2655                 return err;
2656         }
2657
2658         BT_INFO("%s: using NVM file: %s", hdev->name, fwname);
2659
2660         err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
2661
2662         release_firmware(fw);
2663
2664         return err;
2665 }
2666
2667 static int btusb_setup_qca(struct hci_dev *hdev)
2668 {
2669         const struct qca_device_info *info = NULL;
2670         struct qca_version ver;
2671         u32 ver_rom;
2672         u8 status;
2673         int i, err;
2674
2675         err = btusb_qca_send_vendor_req(hdev, QCA_GET_TARGET_VERSION, &ver,
2676                                         sizeof(ver));
2677         if (err < 0)
2678                 return err;
2679
2680         ver_rom = le32_to_cpu(ver.rom_version);
2681         for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
2682                 if (ver_rom == qca_devices_table[i].rom_version)
2683                         info = &qca_devices_table[i];
2684         }
2685         if (!info) {
2686                 BT_ERR("%s: don't support firmware rome 0x%x", hdev->name,
2687                        ver_rom);
2688                 return -ENODEV;
2689         }
2690
2691         err = btusb_qca_send_vendor_req(hdev, QCA_CHECK_STATUS, &status,
2692                                         sizeof(status));
2693         if (err < 0)
2694                 return err;
2695
2696         if (!(status & QCA_PATCH_UPDATED)) {
2697                 err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
2698                 if (err < 0)
2699                         return err;
2700         }
2701
2702         if (!(status & QCA_SYSCFG_UPDATED)) {
2703                 err = btusb_setup_qca_load_nvm(hdev, &ver, info);
2704                 if (err < 0)
2705                         return err;
2706         }
2707
2708         return 0;
2709 }
2710
2711 #ifdef CONFIG_BT_HCIBTUSB_BCM
2712 static inline int __set_diag_interface(struct hci_dev *hdev)
2713 {
2714         struct btusb_data *data = hci_get_drvdata(hdev);
2715         struct usb_interface *intf = data->diag;
2716         int i;
2717
2718         if (!data->diag)
2719                 return -ENODEV;
2720
2721         data->diag_tx_ep = NULL;
2722         data->diag_rx_ep = NULL;
2723
2724         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2725                 struct usb_endpoint_descriptor *ep_desc;
2726
2727                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2728
2729                 if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
2730                         data->diag_tx_ep = ep_desc;
2731                         continue;
2732                 }
2733
2734                 if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
2735                         data->diag_rx_ep = ep_desc;
2736                         continue;
2737                 }
2738         }
2739
2740         if (!data->diag_tx_ep || !data->diag_rx_ep) {
2741                 BT_ERR("%s invalid diagnostic descriptors", hdev->name);
2742                 return -ENODEV;
2743         }
2744
2745         return 0;
2746 }
2747
2748 static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable)
2749 {
2750         struct btusb_data *data = hci_get_drvdata(hdev);
2751         struct sk_buff *skb;
2752         struct urb *urb;
2753         unsigned int pipe;
2754
2755         if (!data->diag_tx_ep)
2756                 return ERR_PTR(-ENODEV);
2757
2758         urb = usb_alloc_urb(0, GFP_KERNEL);
2759         if (!urb)
2760                 return ERR_PTR(-ENOMEM);
2761
2762         skb = bt_skb_alloc(2, GFP_KERNEL);
2763         if (!skb) {
2764                 usb_free_urb(urb);
2765                 return ERR_PTR(-ENOMEM);
2766         }
2767
2768         *skb_put(skb, 1) = 0xf0;
2769         *skb_put(skb, 1) = enable;
2770
2771         pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress);
2772
2773         usb_fill_bulk_urb(urb, data->udev, pipe,
2774                           skb->data, skb->len, btusb_tx_complete, skb);
2775
2776         skb->dev = (void *)hdev;
2777
2778         return urb;
2779 }
2780
2781 static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable)
2782 {
2783         struct btusb_data *data = hci_get_drvdata(hdev);
2784         struct urb *urb;
2785
2786         if (!data->diag)
2787                 return -ENODEV;
2788
2789         if (!test_bit(HCI_RUNNING, &hdev->flags))
2790                 return -ENETDOWN;
2791
2792         urb = alloc_diag_urb(hdev, enable);
2793         if (IS_ERR(urb))
2794                 return PTR_ERR(urb);
2795
2796         return submit_or_queue_tx_urb(hdev, urb);
2797 }
2798 #endif
2799
2800 static int btusb_probe(struct usb_interface *intf,
2801                        const struct usb_device_id *id)
2802 {
2803         struct usb_endpoint_descriptor *ep_desc;
2804         struct btusb_data *data;
2805         struct hci_dev *hdev;
2806         unsigned ifnum_base;
2807         int i, err;
2808
2809         BT_DBG("intf %p id %p", intf, id);
2810
2811         /* interface numbers are hardcoded in the spec */
2812         if (intf->cur_altsetting->desc.bInterfaceNumber != 0) {
2813                 if (!(id->driver_info & BTUSB_IFNUM_2))
2814                         return -ENODEV;
2815                 if (intf->cur_altsetting->desc.bInterfaceNumber != 2)
2816                         return -ENODEV;
2817         }
2818
2819         ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber;
2820
2821         if (!id->driver_info) {
2822                 const struct usb_device_id *match;
2823
2824                 match = usb_match_id(intf, blacklist_table);
2825                 if (match)
2826                         id = match;
2827         }
2828
2829         if (id->driver_info == BTUSB_IGNORE)
2830                 return -ENODEV;
2831
2832         if (id->driver_info & BTUSB_ATH3012) {
2833                 struct usb_device *udev = interface_to_usbdev(intf);
2834
2835                 /* Old firmware would otherwise let ath3k driver load
2836                  * patch and sysconfig files */
2837                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
2838                         return -ENODEV;
2839         }
2840
2841         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
2842         if (!data)
2843                 return -ENOMEM;
2844
2845         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2846                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2847
2848                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
2849                         data->intr_ep = ep_desc;
2850                         continue;
2851                 }
2852
2853                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
2854                         data->bulk_tx_ep = ep_desc;
2855                         continue;
2856                 }
2857
2858                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
2859                         data->bulk_rx_ep = ep_desc;
2860                         continue;
2861                 }
2862         }
2863
2864         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
2865                 return -ENODEV;
2866
2867         if (id->driver_info & BTUSB_AMP) {
2868                 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
2869                 data->cmdreq = 0x2b;
2870         } else {
2871                 data->cmdreq_type = USB_TYPE_CLASS;
2872                 data->cmdreq = 0x00;
2873         }
2874
2875         data->udev = interface_to_usbdev(intf);
2876         data->intf = intf;
2877
2878         INIT_WORK(&data->work, btusb_work);
2879         INIT_WORK(&data->waker, btusb_waker);
2880         init_usb_anchor(&data->deferred);
2881         init_usb_anchor(&data->tx_anchor);
2882         spin_lock_init(&data->txlock);
2883
2884         init_usb_anchor(&data->intr_anchor);
2885         init_usb_anchor(&data->bulk_anchor);
2886         init_usb_anchor(&data->isoc_anchor);
2887         init_usb_anchor(&data->diag_anchor);
2888         spin_lock_init(&data->rxlock);
2889
2890         if (id->driver_info & BTUSB_INTEL_NEW) {
2891                 data->recv_event = btusb_recv_event_intel;
2892                 data->recv_bulk = btusb_recv_bulk_intel;
2893                 set_bit(BTUSB_BOOTLOADER, &data->flags);
2894         } else {
2895                 data->recv_event = hci_recv_frame;
2896                 data->recv_bulk = btusb_recv_bulk;
2897         }
2898
2899         hdev = hci_alloc_dev();
2900         if (!hdev)
2901                 return -ENOMEM;
2902
2903         hdev->bus = HCI_USB;
2904         hci_set_drvdata(hdev, data);
2905
2906         if (id->driver_info & BTUSB_AMP)
2907                 hdev->dev_type = HCI_AMP;
2908         else
2909                 hdev->dev_type = HCI_BREDR;
2910
2911         data->hdev = hdev;
2912
2913         SET_HCIDEV_DEV(hdev, &intf->dev);
2914
2915         hdev->open   = btusb_open;
2916         hdev->close  = btusb_close;
2917         hdev->flush  = btusb_flush;
2918         hdev->send   = btusb_send_frame;
2919         hdev->notify = btusb_notify;
2920
2921         if (id->driver_info & BTUSB_BCM2045)
2922                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
2923
2924         if (id->driver_info & BTUSB_BCM92035)
2925                 hdev->setup = btusb_setup_bcm92035;
2926
2927 #ifdef CONFIG_BT_HCIBTUSB_BCM
2928         if (id->driver_info & BTUSB_BCM_PATCHRAM) {
2929                 hdev->manufacturer = 15;
2930                 hdev->setup = btbcm_setup_patchram;
2931                 hdev->set_diag = btusb_bcm_set_diag;
2932                 hdev->set_bdaddr = btbcm_set_bdaddr;
2933
2934                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
2935                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
2936         }
2937
2938         if (id->driver_info & BTUSB_BCM_APPLE) {
2939                 hdev->manufacturer = 15;
2940                 hdev->setup = btbcm_setup_apple;
2941                 hdev->set_diag = btusb_bcm_set_diag;
2942
2943                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
2944                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
2945         }
2946 #endif
2947
2948         if (id->driver_info & BTUSB_INTEL) {
2949                 hdev->manufacturer = 2;
2950                 hdev->setup = btusb_setup_intel;
2951                 hdev->shutdown = btusb_shutdown_intel;
2952                 hdev->set_diag = btintel_set_diag_mfg;
2953                 hdev->set_bdaddr = btintel_set_bdaddr;
2954                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2955                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
2956                 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
2957         }
2958
2959         if (id->driver_info & BTUSB_INTEL_NEW) {
2960                 hdev->manufacturer = 2;
2961                 hdev->send = btusb_send_frame_intel;
2962                 hdev->setup = btusb_setup_intel_new;
2963                 hdev->hw_error = btintel_hw_error;
2964                 hdev->set_diag = btintel_set_diag;
2965                 hdev->set_bdaddr = btintel_set_bdaddr;
2966                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2967                 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
2968         }
2969
2970         if (id->driver_info & BTUSB_MARVELL)
2971                 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
2972
2973         if (id->driver_info & BTUSB_SWAVE) {
2974                 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
2975                 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
2976         }
2977
2978         if (id->driver_info & BTUSB_INTEL_BOOT) {
2979                 hdev->manufacturer = 2;
2980                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
2981         }
2982
2983         if (id->driver_info & BTUSB_ATH3012) {
2984                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
2985                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
2986                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2987         }
2988
2989         if (id->driver_info & BTUSB_QCA_ROME) {
2990                 data->setup_on_usb = btusb_setup_qca;
2991                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
2992
2993                 /* QCA Rome devices lose their updated firmware over suspend,
2994                  * but the USB hub doesn't notice any status change.
2995                  * explicitly request a device reset on resume.
2996                  */
2997                 interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME;
2998         }
2999
3000 #ifdef CONFIG_BT_HCIBTUSB_RTL
3001         if (id->driver_info & BTUSB_REALTEK) {
3002                 hdev->setup = btrtl_setup_realtek;
3003
3004                 /* Realtek devices lose their updated firmware over suspend,
3005                  * but the USB hub doesn't notice any status change.
3006                  * Explicitly request a device reset on resume.
3007                  */
3008                 interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME;
3009         }
3010 #endif
3011
3012         if (id->driver_info & BTUSB_AMP) {
3013                 /* AMP controllers do not support SCO packets */
3014                 data->isoc = NULL;
3015         } else {
3016                 /* Interface orders are hardcoded in the specification */
3017                 data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1);
3018         }
3019
3020         if (!reset)
3021                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3022
3023         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
3024                 if (!disable_scofix)
3025                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
3026         }
3027
3028         if (id->driver_info & BTUSB_BROKEN_ISOC)
3029                 data->isoc = NULL;
3030
3031         if (id->driver_info & BTUSB_DIGIANSWER) {
3032                 data->cmdreq_type = USB_TYPE_VENDOR;
3033                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3034         }
3035
3036         if (id->driver_info & BTUSB_CSR) {
3037                 struct usb_device *udev = data->udev;
3038                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
3039
3040                 /* Old firmware would otherwise execute USB reset */
3041                 if (bcdDevice < 0x117)
3042                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3043
3044                 /* Fake CSR devices with broken commands */
3045                 if (bcdDevice <= 0x100 || bcdDevice == 0x134)
3046                         hdev->setup = btusb_setup_csr;
3047
3048                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3049         }
3050
3051         if (id->driver_info & BTUSB_SNIFFER) {
3052                 struct usb_device *udev = data->udev;
3053
3054                 /* New sniffer firmware has crippled HCI interface */
3055                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
3056                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3057         }
3058
3059         if (id->driver_info & BTUSB_INTEL_BOOT) {
3060                 /* A bug in the bootloader causes that interrupt interface is
3061                  * only enabled after receiving SetInterface(0, AltSetting=0).
3062                  */
3063                 err = usb_set_interface(data->udev, 0, 0);
3064                 if (err < 0) {
3065                         BT_ERR("failed to set interface 0, alt 0 %d", err);
3066                         hci_free_dev(hdev);
3067                         return err;
3068                 }
3069         }
3070
3071         if (data->isoc) {
3072                 err = usb_driver_claim_interface(&btusb_driver,
3073                                                  data->isoc, data);
3074                 if (err < 0) {
3075                         hci_free_dev(hdev);
3076                         return err;
3077                 }
3078         }
3079
3080 #ifdef CONFIG_BT_HCIBTUSB_BCM
3081         if (data->diag) {
3082                 if (!usb_driver_claim_interface(&btusb_driver,
3083                                                 data->diag, data))
3084                         __set_diag_interface(hdev);
3085                 else
3086                         data->diag = NULL;
3087         }
3088 #endif
3089
3090         err = hci_register_dev(hdev);
3091         if (err < 0) {
3092                 hci_free_dev(hdev);
3093                 return err;
3094         }
3095
3096         usb_set_intfdata(intf, data);
3097
3098         return 0;
3099 }
3100
3101 static void btusb_disconnect(struct usb_interface *intf)
3102 {
3103         struct btusb_data *data = usb_get_intfdata(intf);
3104         struct hci_dev *hdev;
3105
3106         BT_DBG("intf %p", intf);
3107
3108         if (!data)
3109                 return;
3110
3111         hdev = data->hdev;
3112         usb_set_intfdata(data->intf, NULL);
3113
3114         if (data->isoc)
3115                 usb_set_intfdata(data->isoc, NULL);
3116
3117         if (data->diag)
3118                 usb_set_intfdata(data->diag, NULL);
3119
3120         hci_unregister_dev(hdev);
3121
3122         if (intf == data->intf) {
3123                 if (data->isoc)
3124                         usb_driver_release_interface(&btusb_driver, data->isoc);
3125                 if (data->diag)
3126                         usb_driver_release_interface(&btusb_driver, data->diag);
3127         } else if (intf == data->isoc) {
3128                 if (data->diag)
3129                         usb_driver_release_interface(&btusb_driver, data->diag);
3130                 usb_driver_release_interface(&btusb_driver, data->intf);
3131         } else if (intf == data->diag) {
3132                 usb_driver_release_interface(&btusb_driver, data->intf);
3133                 if (data->isoc)
3134                         usb_driver_release_interface(&btusb_driver, data->isoc);
3135         }
3136
3137         hci_free_dev(hdev);
3138 }
3139
3140 #ifdef CONFIG_PM
3141 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
3142 {
3143         struct btusb_data *data = usb_get_intfdata(intf);
3144
3145         BT_DBG("intf %p", intf);
3146
3147         if (data->suspend_count++)
3148                 return 0;
3149
3150         spin_lock_irq(&data->txlock);
3151         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
3152                 set_bit(BTUSB_SUSPENDING, &data->flags);
3153                 spin_unlock_irq(&data->txlock);
3154         } else {
3155                 spin_unlock_irq(&data->txlock);
3156                 data->suspend_count--;
3157                 return -EBUSY;
3158         }
3159
3160         cancel_work_sync(&data->work);
3161
3162         btusb_stop_traffic(data);
3163         usb_kill_anchored_urbs(&data->tx_anchor);
3164
3165         return 0;
3166 }
3167
3168 static void play_deferred(struct btusb_data *data)
3169 {
3170         struct urb *urb;
3171         int err;
3172
3173         while ((urb = usb_get_from_anchor(&data->deferred))) {
3174                 err = usb_submit_urb(urb, GFP_ATOMIC);
3175                 if (err < 0)
3176                         break;
3177
3178                 data->tx_in_flight++;
3179         }
3180         usb_scuttle_anchored_urbs(&data->deferred);
3181 }
3182
3183 static int btusb_resume(struct usb_interface *intf)
3184 {
3185         struct btusb_data *data = usb_get_intfdata(intf);
3186         struct hci_dev *hdev = data->hdev;
3187         int err = 0;
3188
3189         BT_DBG("intf %p", intf);
3190
3191         if (--data->suspend_count)
3192                 return 0;
3193
3194         if (!test_bit(HCI_RUNNING, &hdev->flags))
3195                 goto done;
3196
3197         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
3198                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
3199                 if (err < 0) {
3200                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
3201                         goto failed;
3202                 }
3203         }
3204
3205         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
3206                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
3207                 if (err < 0) {
3208                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
3209                         goto failed;
3210                 }
3211
3212                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
3213         }
3214
3215         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
3216                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
3217                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
3218                 else
3219                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
3220         }
3221
3222         spin_lock_irq(&data->txlock);
3223         play_deferred(data);
3224         clear_bit(BTUSB_SUSPENDING, &data->flags);
3225         spin_unlock_irq(&data->txlock);
3226         schedule_work(&data->work);
3227
3228         return 0;
3229
3230 failed:
3231         usb_scuttle_anchored_urbs(&data->deferred);
3232 done:
3233         spin_lock_irq(&data->txlock);
3234         clear_bit(BTUSB_SUSPENDING, &data->flags);
3235         spin_unlock_irq(&data->txlock);
3236
3237         return err;
3238 }
3239 #endif
3240
3241 static struct usb_driver btusb_driver = {
3242         .name           = "btusb",
3243         .probe          = btusb_probe,
3244         .disconnect     = btusb_disconnect,
3245 #ifdef CONFIG_PM
3246         .suspend        = btusb_suspend,
3247         .resume         = btusb_resume,
3248 #endif
3249         .id_table       = btusb_table,
3250         .supports_autosuspend = 1,
3251         .disable_hub_initiated_lpm = 1,
3252 };
3253
3254 module_usb_driver(btusb_driver);
3255
3256 module_param(disable_scofix, bool, 0644);
3257 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
3258
3259 module_param(force_scofix, bool, 0644);
3260 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
3261
3262 module_param(reset, bool, 0644);
3263 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
3264
3265 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
3266 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
3267 MODULE_VERSION(VERSION);
3268 MODULE_LICENSE("GPL");