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/dmi.h>
  25 #include <linux/module.h>
  26 #include <linux/usb.h>
  27 #include <linux/usb/quirks.h>
  28 #include <linux/firmware.h>
  29 #include <linux/of_device.h>
  30 #include <linux/of_irq.h>
  31 #include <linux/suspend.h>
  32 #include <asm/unaligned.h>
  33
  34 #include <net/bluetooth/bluetooth.h>
  35 #include <net/bluetooth/hci_core.h>
  36
  37 #include "btintel.h"
  38 #include "btbcm.h"
  39 #include "btrtl.h"
  40
  41 #define VERSION "0.8"
  42
  43 static bool disable_scofix;
  44 static bool force_scofix;
  45 static bool enable_autosuspend = IS_ENABLED(CONFIG_BT_HCIBTUSB_AUTOSUSPEND);
  46
  47 static bool reset = true;
  48
  49 static struct usb_driver btusb_driver;
  50
  51 #define BTUSB_IGNORE            0x01
  52 #define BTUSB_DIGIANSWER        0x02
  53 #define BTUSB_CSR               0x04
  54 #define BTUSB_SNIFFER           0x08
  55 #define BTUSB_BCM92035          0x10
  56 #define BTUSB_BROKEN_ISOC       0x20
  57 #define BTUSB_WRONG_SCO_MTU     0x40
  58 #define BTUSB_ATH3012           0x80
  59 #define BTUSB_INTEL             0x100
  60 #define BTUSB_INTEL_BOOT        0x200
  61 #define BTUSB_BCM_PATCHRAM      0x400
  62 #define BTUSB_MARVELL           0x800
  63 #define BTUSB_SWAVE             0x1000
  64 #define BTUSB_INTEL_NEW         0x2000
  65 #define BTUSB_AMP               0x4000
  66 #define BTUSB_QCA_ROME          0x8000
  67 #define BTUSB_BCM_APPLE         0x10000
  68 #define BTUSB_REALTEK           0x20000
  69 #define BTUSB_BCM2045           0x40000
  70 #define BTUSB_IFNUM_2           0x80000
  71 #define BTUSB_CW6622            0x100000
  72
  73 static const struct usb_device_id btusb_table[] = {
  74         /* Generic Bluetooth USB device */
  75         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  76
  77         /* Generic Bluetooth AMP device */
  78         { USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP },
  79
  80         /* Generic Bluetooth USB interface */
  81         { USB_INTERFACE_INFO(0xe0, 0x01, 0x01) },
  82
  83         /* Apple-specific (Broadcom) devices */
  84         { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01),
  85           .driver_info = BTUSB_BCM_APPLE | BTUSB_IFNUM_2 },
  86
  87         /* MediaTek MT76x0E */
  88         { USB_DEVICE(0x0e8d, 0x763f) },
  89
  90         /* Broadcom SoftSailing reporting vendor specific */
  91         { USB_DEVICE(0x0a5c, 0x21e1) },
  92
  93         /* Apple MacBookPro 7,1 */
  94         { USB_DEVICE(0x05ac, 0x8213) },
  95
  96         /* Apple iMac11,1 */
  97         { USB_DEVICE(0x05ac, 0x8215) },
  98
  99         /* Apple MacBookPro6,2 */
 100         { USB_DEVICE(0x05ac, 0x8218) },
 101
 102         /* Apple MacBookAir3,1, MacBookAir3,2 */
 103         { USB_DEVICE(0x05ac, 0x821b) },
 104
 105         /* Apple MacBookAir4,1 */
 106         { USB_DEVICE(0x05ac, 0x821f) },
 107
 108         /* Apple MacBookPro8,2 */
 109         { USB_DEVICE(0x05ac, 0x821a) },
 110
 111         /* Apple MacMini5,1 */
 112         { USB_DEVICE(0x05ac, 0x8281) },
 113
 114         /* AVM BlueFRITZ! USB v2.0 */
 115         { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE },
 116
 117         /* Bluetooth Ultraport Module from IBM */
 118         { USB_DEVICE(0x04bf, 0x030a) },
 119
 120         /* ALPS Modules with non-standard id */
 121         { USB_DEVICE(0x044e, 0x3001) },
 122         { USB_DEVICE(0x044e, 0x3002) },
 123
 124         /* Ericsson with non-standard id */
 125         { USB_DEVICE(0x0bdb, 0x1002) },
 126
 127         /* Canyon CN-BTU1 with HID interfaces */
 128         { USB_DEVICE(0x0c10, 0x0000) },
 129
 130         /* Broadcom BCM20702A0 */
 131         { USB_DEVICE(0x413c, 0x8197) },
 132
 133         /* Broadcom BCM20702B0 (Dynex/Insignia) */
 134         { USB_DEVICE(0x19ff, 0x0239), .driver_info = BTUSB_BCM_PATCHRAM },
 135
 136         /* Broadcom BCM43142A0 (Foxconn/Lenovo) */
 137         { USB_VENDOR_AND_INTERFACE_INFO(0x105b, 0xff, 0x01, 0x01),
 138           .driver_info = BTUSB_BCM_PATCHRAM },
 139
 140         /* Broadcom BCM920703 (HTC Vive) */
 141         { USB_VENDOR_AND_INTERFACE_INFO(0x0bb4, 0xff, 0x01, 0x01),
 142           .driver_info = BTUSB_BCM_PATCHRAM },
 143
 144         /* Foxconn - Hon Hai */
 145         { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01),
 146           .driver_info = BTUSB_BCM_PATCHRAM },
 147
 148         /* Lite-On Technology - Broadcom based */
 149         { USB_VENDOR_AND_INTERFACE_INFO(0x04ca, 0xff, 0x01, 0x01),
 150           .driver_info = BTUSB_BCM_PATCHRAM },
 151
 152         /* Broadcom devices with vendor specific id */
 153         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
 154           .driver_info = BTUSB_BCM_PATCHRAM },
 155
 156         /* ASUSTek Computer - Broadcom based */
 157         { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01),
 158           .driver_info = BTUSB_BCM_PATCHRAM },
 159
 160         /* Belkin F8065bf - Broadcom based */
 161         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01),
 162           .driver_info = BTUSB_BCM_PATCHRAM },
 163
 164         /* IMC Networks - Broadcom based */
 165         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01),
 166           .driver_info = BTUSB_BCM_PATCHRAM },
 167
 168         /* Dell Computer - Broadcom based  */
 169         { USB_VENDOR_AND_INTERFACE_INFO(0x413c, 0xff, 0x01, 0x01),
 170           .driver_info = BTUSB_BCM_PATCHRAM },
 171
 172         /* Toshiba Corp - Broadcom based */
 173         { USB_VENDOR_AND_INTERFACE_INFO(0x0930, 0xff, 0x01, 0x01),
 174           .driver_info = BTUSB_BCM_PATCHRAM },
 175
 176         /* Intel Bluetooth USB Bootloader (RAM module) */
 177         { USB_DEVICE(0x8087, 0x0a5a),
 178           .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
 179
 180         { }     /* Terminating entry */
 181 };
 182
 183 MODULE_DEVICE_TABLE(usb, btusb_table);
 184
 185 static const struct usb_device_id blacklist_table[] = {
 186         /* CSR BlueCore devices */
 187         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 188
 189         /* Broadcom BCM2033 without firmware */
 190         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 191
 192         /* Broadcom BCM2045 devices */
 193         { USB_DEVICE(0x0a5c, 0x2045), .driver_info = BTUSB_BCM2045 },
 194
 195         /* Atheros 3011 with sflash firmware */
 196         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 197         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 198         { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE },
 199         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 200         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 201         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 202         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 203
 204         /* Atheros AR9285 Malbec with sflash firmware */
 205         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 206
 207         /* Atheros 3012 with sflash firmware */
 208         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 209         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 210         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 211         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 212         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 213         { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
 214         { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
 215         { USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 },
 216         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 217         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 218         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 219         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 220         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 221         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 222         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 223         { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
 224         { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
 225         { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
 226         { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 },
 227         { USB_DEVICE(0x04ca, 0x3018), .driver_info = BTUSB_ATH3012 },
 228         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 229         { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
 230         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 231         { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
 232         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 233         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 234         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 235         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 236         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 237         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
 238         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 239         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 240         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 241         { USB_DEVICE(0x0cf3, 0x817b), .driver_info = BTUSB_ATH3012 },
 242         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 243         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 244         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 245         { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 },
 246         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 247         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 248         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 249         { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 },
 250         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 251         { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
 252         { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
 253         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
 254         { USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 },
 255         { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
 256         { USB_DEVICE(0x13d3, 0x3487), .driver_info = BTUSB_ATH3012 },
 257         { USB_DEVICE(0x13d3, 0x3490), .driver_info = BTUSB_ATH3012 },
 258
 259         /* Atheros AR5BBU12 with sflash firmware */
 260         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 261
 262         /* Atheros AR5BBU12 with sflash firmware */
 263         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 264         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 265
 266         /* QCA ROME chipset */
 267         { USB_DEVICE(0x0cf3, 0x535b), .driver_info = BTUSB_QCA_ROME },
 268         { USB_DEVICE(0x0cf3, 0xe007), .driver_info = BTUSB_QCA_ROME },
 269         { USB_DEVICE(0x0cf3, 0xe009), .driver_info = BTUSB_QCA_ROME },
 270         { USB_DEVICE(0x0cf3, 0xe010), .driver_info = BTUSB_QCA_ROME },
 271         { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME },
 272         { USB_DEVICE(0x0cf3, 0xe301), .driver_info = BTUSB_QCA_ROME },
 273         { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME },
 274         { USB_DEVICE(0x0489, 0xe092), .driver_info = BTUSB_QCA_ROME },
 275         { USB_DEVICE(0x0489, 0xe09f), .driver_info = BTUSB_QCA_ROME },
 276         { USB_DEVICE(0x0489, 0xe0a2), .driver_info = BTUSB_QCA_ROME },
 277         { USB_DEVICE(0x04ca, 0x3011), .driver_info = BTUSB_QCA_ROME },
 278         { USB_DEVICE(0x04ca, 0x3015), .driver_info = BTUSB_QCA_ROME },
 279         { USB_DEVICE(0x04ca, 0x3016), .driver_info = BTUSB_QCA_ROME },
 280         { USB_DEVICE(0x04ca, 0x301a), .driver_info = BTUSB_QCA_ROME },
 281         { USB_DEVICE(0x13d3, 0x3496), .driver_info = BTUSB_QCA_ROME },
 282
 283         /* Broadcom BCM2035 */
 284         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 285         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 286         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 287
 288         /* Broadcom BCM2045 */
 289         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 290         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 291
 292         /* IBM/Lenovo ThinkPad with Broadcom chip */
 293         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 294         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 295
 296         /* HP laptop with Broadcom chip */
 297         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 298
 299         /* Dell laptop with Broadcom chip */
 300         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 301
 302         /* Dell Wireless 370 and 410 devices */
 303         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 304         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 305
 306         /* Belkin F8T012 and F8T013 devices */
 307         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 308         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 309
 310         /* Asus WL-BTD202 device */
 311         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 312
 313         /* Kensington Bluetooth USB adapter */
 314         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 315
 316         /* RTX Telecom based adapters with buggy SCO support */
 317         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 318         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 319
 320         /* CONWISE Technology based adapters with buggy SCO support */
 321         { USB_DEVICE(0x0e5e, 0x6622),
 322           .driver_info = BTUSB_BROKEN_ISOC | BTUSB_CW6622},
 323
 324         /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
 325         { USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE },
 326
 327         /* Digianswer devices */
 328         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 329         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 330
 331         /* CSR BlueCore Bluetooth Sniffer */
 332         { USB_DEVICE(0x0a12, 0x0002),
 333           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 334
 335         /* Frontline ComProbe Bluetooth Sniffer */
 336         { USB_DEVICE(0x16d3, 0x0002),
 337           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 338
 339         /* Marvell Bluetooth devices */
 340         { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
 341         { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
 342         { USB_DEVICE(0x1286, 0x204e), .driver_info = BTUSB_MARVELL },
 343
 344         /* Intel Bluetooth devices */
 345         { USB_DEVICE(0x8087, 0x0025), .driver_info = BTUSB_INTEL_NEW },
 346         { USB_DEVICE(0x8087, 0x0026), .driver_info = BTUSB_INTEL_NEW },
 347         { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR },
 348         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 349         { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
 350         { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_NEW },
 351         { USB_DEVICE(0x8087, 0x0aa7), .driver_info = BTUSB_INTEL },
 352         { USB_DEVICE(0x8087, 0x0aaa), .driver_info = BTUSB_INTEL_NEW },
 353
 354         /* Other Intel Bluetooth devices */
 355         { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01),
 356           .driver_info = BTUSB_IGNORE },
 357
 358         /* Realtek Bluetooth devices */
 359         { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01),
 360           .driver_info = BTUSB_REALTEK },
 361
 362         /* Additional Realtek 8723AE Bluetooth devices */
 363         { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK },
 364         { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK },
 365
 366         /* Additional Realtek 8723BE Bluetooth devices */
 367         { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK },
 368         { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK },
 369         { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
 370         { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
 371         { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },
 372         { USB_DEVICE(0x13d3, 0x3494), .driver_info = BTUSB_REALTEK },
 373
 374         /* Additional Realtek 8723BU Bluetooth devices */
 375         { USB_DEVICE(0x7392, 0xa611), .driver_info = BTUSB_REALTEK },
 376
 377         /* Additional Realtek 8723DE Bluetooth devices */
 378         { USB_DEVICE(0x0bda, 0xb009), .driver_info = BTUSB_REALTEK },
 379         { USB_DEVICE(0x2ff8, 0xb011), .driver_info = BTUSB_REALTEK },
 380
 381         /* Additional Realtek 8821AE Bluetooth devices */
 382         { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
 383         { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },
 384         { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK },
 385         { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK },
 386         { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK },
 387
 388         /* Additional Realtek 8822BE Bluetooth devices */
 389         { USB_DEVICE(0x13d3, 0x3526), .driver_info = BTUSB_REALTEK },
 390         { USB_DEVICE(0x0b05, 0x185c), .driver_info = BTUSB_REALTEK },
 391
 392         /* Silicon Wave based devices */
 393         { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE },
 394
 395         { }     /* Terminating entry */
 396 };
 397
 398 /* The Bluetooth USB module build into some devices needs to be reset on resume,
 399  * this is a problem with the platform (likely shutting off all power) not with
 400  * the module itself. So we use a DMI list to match known broken platforms.
 401  */
 402 static const struct dmi_system_id btusb_needs_reset_resume_table[] = {
 403         {
 404                 /* Dell OptiPlex 3060 (QCA ROME device 0cf3:e007) */
 405                 .matches = {
 406                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 407                         DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 3060"),
 408                 },
 409         },
 410         {
 411                 /* Dell XPS 9360 (QCA ROME device 0cf3:e300) */
 412                 .matches = {
 413                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 414                         DMI_MATCH(DMI_PRODUCT_NAME, "XPS 13 9360"),
 415                 },
 416         },
 417         {
 418                 /* Dell Inspiron 5565 (QCA ROME device 0cf3:e009) */
 419                 .matches = {
 420                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 421                         DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5565"),
 422                 },
 423         },
 424         {}
 425 };
 426
 427 #define BTUSB_MAX_ISOC_FRAMES   10
 428
 429 #define BTUSB_INTR_RUNNING      0
 430 #define BTUSB_BULK_RUNNING      1
 431 #define BTUSB_ISOC_RUNNING      2
 432 #define BTUSB_SUSPENDING        3
 433 #define BTUSB_DID_ISO_RESUME    4
 434 #define BTUSB_BOOTLOADER        5
 435 #define BTUSB_DOWNLOADING       6
 436 #define BTUSB_FIRMWARE_LOADED   7
 437 #define BTUSB_FIRMWARE_FAILED   8
 438 #define BTUSB_BOOTING           9
 439 #define BTUSB_DIAG_RUNNING      10
 440 #define BTUSB_OOB_WAKE_ENABLED  11
 441
 442 struct btusb_data {
 443         struct hci_dev       *hdev;
 444         struct usb_device    *udev;
 445         struct usb_interface *intf;
 446         struct usb_interface *isoc;
 447         struct usb_interface *diag;
 448         unsigned isoc_ifnum;
 449
 450         unsigned long flags;
 451
 452         struct work_struct work;
 453         struct work_struct waker;
 454
 455         struct usb_anchor deferred;
 456         struct usb_anchor tx_anchor;
 457         int tx_in_flight;
 458         spinlock_t txlock;
 459
 460         struct usb_anchor intr_anchor;
 461         struct usb_anchor bulk_anchor;
 462         struct usb_anchor isoc_anchor;
 463         struct usb_anchor diag_anchor;
 464         spinlock_t rxlock;
 465
 466         struct sk_buff *evt_skb;
 467         struct sk_buff *acl_skb;
 468         struct sk_buff *sco_skb;
 469
 470         struct usb_endpoint_descriptor *intr_ep;
 471         struct usb_endpoint_descriptor *bulk_tx_ep;
 472         struct usb_endpoint_descriptor *bulk_rx_ep;
 473         struct usb_endpoint_descriptor *isoc_tx_ep;
 474         struct usb_endpoint_descriptor *isoc_rx_ep;
 475         struct usb_endpoint_descriptor *diag_tx_ep;
 476         struct usb_endpoint_descriptor *diag_rx_ep;
 477
 478         __u8 cmdreq_type;
 479         __u8 cmdreq;
 480
 481         unsigned int sco_num;
 482         int isoc_altsetting;
 483         int suspend_count;
 484
 485         int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
 486         int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
 487
 488         int (*setup_on_usb)(struct hci_dev *hdev);
 489
 490         int oob_wake_irq;   /* irq for out-of-band wake-on-bt */
 491 };
 492
 493 static inline void btusb_free_frags(struct btusb_data *data)
 494 {
 495         unsigned long flags;
 496
 497         spin_lock_irqsave(&data->rxlock, flags);
 498
 499         kfree_skb(data->evt_skb);
 500         data->evt_skb = NULL;
 501
 502         kfree_skb(data->acl_skb);
 503         data->acl_skb = NULL;
 504
 505         kfree_skb(data->sco_skb);
 506         data->sco_skb = NULL;
 507
 508         spin_unlock_irqrestore(&data->rxlock, flags);
 509 }
 510
 511 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
 512 {
 513         struct sk_buff *skb;
 514         unsigned long flags;
 515         int err = 0;
 516
 517         spin_lock_irqsave(&data->rxlock, flags);
 518         skb = data->evt_skb;
 519
 520         while (count) {
 521                 int len;
 522
 523                 if (!skb) {
 524                         skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
 525                         if (!skb) {
 526                                 err = -ENOMEM;
 527                                 break;
 528                         }
 529
 530                         hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
 531                         hci_skb_expect(skb) = HCI_EVENT_HDR_SIZE;
 532                 }
 533
 534                 len = min_t(uint, hci_skb_expect(skb), count);
 535                 skb_put_data(skb, buffer, len);
 536
 537                 count -= len;
 538                 buffer += len;
 539                 hci_skb_expect(skb) -= len;
 540
 541                 if (skb->len == HCI_EVENT_HDR_SIZE) {
 542                         /* Complete event header */
 543                         hci_skb_expect(skb) = hci_event_hdr(skb)->plen;
 544
 545                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 546                                 kfree_skb(skb);
 547                                 skb = NULL;
 548
 549                                 err = -EILSEQ;
 550                                 break;
 551                         }
 552                 }
 553
 554                 if (!hci_skb_expect(skb)) {
 555                         /* Complete frame */
 556                         data->recv_event(data->hdev, skb);
 557                         skb = NULL;
 558                 }
 559         }
 560
 561         data->evt_skb = skb;
 562         spin_unlock_irqrestore(&data->rxlock, flags);
 563
 564         return err;
 565 }
 566
 567 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
 568 {
 569         struct sk_buff *skb;
 570         unsigned long flags;
 571         int err = 0;
 572
 573         spin_lock_irqsave(&data->rxlock, flags);
 574         skb = data->acl_skb;
 575
 576         while (count) {
 577                 int len;
 578
 579                 if (!skb) {
 580                         skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
 581                         if (!skb) {
 582                                 err = -ENOMEM;
 583                                 break;
 584                         }
 585
 586                         hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT;
 587                         hci_skb_expect(skb) = HCI_ACL_HDR_SIZE;
 588                 }
 589
 590                 len = min_t(uint, hci_skb_expect(skb), count);
 591                 skb_put_data(skb, buffer, len);
 592
 593                 count -= len;
 594                 buffer += len;
 595                 hci_skb_expect(skb) -= len;
 596
 597                 if (skb->len == HCI_ACL_HDR_SIZE) {
 598                         __le16 dlen = hci_acl_hdr(skb)->dlen;
 599
 600                         /* Complete ACL header */
 601                         hci_skb_expect(skb) = __le16_to_cpu(dlen);
 602
 603                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 604                                 kfree_skb(skb);
 605                                 skb = NULL;
 606
 607                                 err = -EILSEQ;
 608                                 break;
 609                         }
 610                 }
 611
 612                 if (!hci_skb_expect(skb)) {
 613                         /* Complete frame */
 614                         hci_recv_frame(data->hdev, skb);
 615                         skb = NULL;
 616                 }
 617         }
 618
 619         data->acl_skb = skb;
 620         spin_unlock_irqrestore(&data->rxlock, flags);
 621
 622         return err;
 623 }
 624
 625 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
 626 {
 627         struct sk_buff *skb;
 628         unsigned long flags;
 629         int err = 0;
 630
 631         spin_lock_irqsave(&data->rxlock, flags);
 632         skb = data->sco_skb;
 633
 634         while (count) {
 635                 int len;
 636
 637                 if (!skb) {
 638                         skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
 639                         if (!skb) {
 640                                 err = -ENOMEM;
 641                                 break;
 642                         }
 643
 644                         hci_skb_pkt_type(skb) = HCI_SCODATA_PKT;
 645                         hci_skb_expect(skb) = HCI_SCO_HDR_SIZE;
 646                 }
 647
 648                 len = min_t(uint, hci_skb_expect(skb), count);
 649                 skb_put_data(skb, buffer, len);
 650
 651                 count -= len;
 652                 buffer += len;
 653                 hci_skb_expect(skb) -= len;
 654
 655                 if (skb->len == HCI_SCO_HDR_SIZE) {
 656                         /* Complete SCO header */
 657                         hci_skb_expect(skb) = hci_sco_hdr(skb)->dlen;
 658
 659                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 660                                 kfree_skb(skb);
 661                                 skb = NULL;
 662
 663                                 err = -EILSEQ;
 664                                 break;
 665                         }
 666                 }
 667
 668                 if (!hci_skb_expect(skb)) {
 669                         /* Complete frame */
 670                         hci_recv_frame(data->hdev, skb);
 671                         skb = NULL;
 672                 }
 673         }
 674
 675         data->sco_skb = skb;
 676         spin_unlock_irqrestore(&data->rxlock, flags);
 677
 678         return err;
 679 }
 680
 681 static void btusb_intr_complete(struct urb *urb)
 682 {
 683         struct hci_dev *hdev = urb->context;
 684         struct btusb_data *data = hci_get_drvdata(hdev);
 685         int err;
 686
 687         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 688                urb->actual_length);
 689
 690         if (!test_bit(HCI_RUNNING, &hdev->flags))
 691                 return;
 692
 693         if (urb->status == 0) {
 694                 hdev->stat.byte_rx += urb->actual_length;
 695
 696                 if (btusb_recv_intr(data, urb->transfer_buffer,
 697                                     urb->actual_length) < 0) {
 698                         bt_dev_err(hdev, "corrupted event packet");
 699                         hdev->stat.err_rx++;
 700                 }
 701         } else if (urb->status == -ENOENT) {
 702                 /* Avoid suspend failed when usb_kill_urb */
 703                 return;
 704         }
 705
 706         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 707                 return;
 708
 709         usb_mark_last_busy(data->udev);
 710         usb_anchor_urb(urb, &data->intr_anchor);
 711
 712         err = usb_submit_urb(urb, GFP_ATOMIC);
 713         if (err < 0) {
 714                 /* -EPERM: urb is being killed;
 715                  * -ENODEV: device got disconnected
 716                  */
 717                 if (err != -EPERM && err != -ENODEV)
 718                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
 719                                    urb, -err);
 720                 usb_unanchor_urb(urb);
 721         }
 722 }
 723
 724 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 725 {
 726         struct btusb_data *data = hci_get_drvdata(hdev);
 727         struct urb *urb;
 728         unsigned char *buf;
 729         unsigned int pipe;
 730         int err, size;
 731
 732         BT_DBG("%s", hdev->name);
 733
 734         if (!data->intr_ep)
 735                 return -ENODEV;
 736
 737         urb = usb_alloc_urb(0, mem_flags);
 738         if (!urb)
 739                 return -ENOMEM;
 740
 741         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 742
 743         buf = kmalloc(size, mem_flags);
 744         if (!buf) {
 745                 usb_free_urb(urb);
 746                 return -ENOMEM;
 747         }
 748
 749         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 750
 751         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 752                          btusb_intr_complete, hdev, data->intr_ep->bInterval);
 753
 754         urb->transfer_flags |= URB_FREE_BUFFER;
 755
 756         usb_anchor_urb(urb, &data->intr_anchor);
 757
 758         err = usb_submit_urb(urb, mem_flags);
 759         if (err < 0) {
 760                 if (err != -EPERM && err != -ENODEV)
 761                         bt_dev_err(hdev, "urb %p submission failed (%d)",
 762                                    urb, -err);
 763                 usb_unanchor_urb(urb);
 764         }
 765
 766         usb_free_urb(urb);
 767
 768         return err;
 769 }
 770
 771 static void btusb_bulk_complete(struct urb *urb)
 772 {
 773         struct hci_dev *hdev = urb->context;
 774         struct btusb_data *data = hci_get_drvdata(hdev);
 775         int err;
 776
 777         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 778                urb->actual_length);
 779
 780         if (!test_bit(HCI_RUNNING, &hdev->flags))
 781                 return;
 782
 783         if (urb->status == 0) {
 784                 hdev->stat.byte_rx += urb->actual_length;
 785
 786                 if (data->recv_bulk(data, urb->transfer_buffer,
 787                                     urb->actual_length) < 0) {
 788                         bt_dev_err(hdev, "corrupted ACL packet");
 789                         hdev->stat.err_rx++;
 790                 }
 791         } else if (urb->status == -ENOENT) {
 792                 /* Avoid suspend failed when usb_kill_urb */
 793                 return;
 794         }
 795
 796         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 797                 return;
 798
 799         usb_anchor_urb(urb, &data->bulk_anchor);
 800         usb_mark_last_busy(data->udev);
 801
 802         err = usb_submit_urb(urb, GFP_ATOMIC);
 803         if (err < 0) {
 804                 /* -EPERM: urb is being killed;
 805                  * -ENODEV: device got disconnected
 806                  */
 807                 if (err != -EPERM && err != -ENODEV)
 808                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
 809                                    urb, -err);
 810                 usb_unanchor_urb(urb);
 811         }
 812 }
 813
 814 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 815 {
 816         struct btusb_data *data = hci_get_drvdata(hdev);
 817         struct urb *urb;
 818         unsigned char *buf;
 819         unsigned int pipe;
 820         int err, size = HCI_MAX_FRAME_SIZE;
 821
 822         BT_DBG("%s", hdev->name);
 823
 824         if (!data->bulk_rx_ep)
 825                 return -ENODEV;
 826
 827         urb = usb_alloc_urb(0, mem_flags);
 828         if (!urb)
 829                 return -ENOMEM;
 830
 831         buf = kmalloc(size, mem_flags);
 832         if (!buf) {
 833                 usb_free_urb(urb);
 834                 return -ENOMEM;
 835         }
 836
 837         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 838
 839         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
 840                           btusb_bulk_complete, hdev);
 841
 842         urb->transfer_flags |= URB_FREE_BUFFER;
 843
 844         usb_mark_last_busy(data->udev);
 845         usb_anchor_urb(urb, &data->bulk_anchor);
 846
 847         err = usb_submit_urb(urb, mem_flags);
 848         if (err < 0) {
 849                 if (err != -EPERM && err != -ENODEV)
 850                         bt_dev_err(hdev, "urb %p submission failed (%d)",
 851                                    urb, -err);
 852                 usb_unanchor_urb(urb);
 853         }
 854
 855         usb_free_urb(urb);
 856
 857         return err;
 858 }
 859
 860 static void btusb_isoc_complete(struct urb *urb)
 861 {
 862         struct hci_dev *hdev = urb->context;
 863         struct btusb_data *data = hci_get_drvdata(hdev);
 864         int i, err;
 865
 866         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 867                urb->actual_length);
 868
 869         if (!test_bit(HCI_RUNNING, &hdev->flags))
 870                 return;
 871
 872         if (urb->status == 0) {
 873                 for (i = 0; i < urb->number_of_packets; i++) {
 874                         unsigned int offset = urb->iso_frame_desc[i].offset;
 875                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 876
 877                         if (urb->iso_frame_desc[i].status)
 878                                 continue;
 879
 880                         hdev->stat.byte_rx += length;
 881
 882                         if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
 883                                             length) < 0) {
 884                                 bt_dev_err(hdev, "corrupted SCO packet");
 885                                 hdev->stat.err_rx++;
 886                         }
 887                 }
 888         } else if (urb->status == -ENOENT) {
 889                 /* Avoid suspend failed when usb_kill_urb */
 890                 return;
 891         }
 892
 893         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 894                 return;
 895
 896         usb_anchor_urb(urb, &data->isoc_anchor);
 897
 898         err = usb_submit_urb(urb, GFP_ATOMIC);
 899         if (err < 0) {
 900                 /* -EPERM: urb is being killed;
 901                  * -ENODEV: device got disconnected
 902                  */
 903                 if (err != -EPERM && err != -ENODEV)
 904                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
 905                                    urb, -err);
 906                 usb_unanchor_urb(urb);
 907         }
 908 }
 909
 910 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 911 {
 912         int i, offset = 0;
 913
 914         BT_DBG("len %d mtu %d", len, mtu);
 915
 916         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 917                                         i++, offset += mtu, len -= mtu) {
 918                 urb->iso_frame_desc[i].offset = offset;
 919                 urb->iso_frame_desc[i].length = mtu;
 920         }
 921
 922         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 923                 urb->iso_frame_desc[i].offset = offset;
 924                 urb->iso_frame_desc[i].length = len;
 925                 i++;
 926         }
 927
 928         urb->number_of_packets = i;
 929 }
 930
 931 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 932 {
 933         struct btusb_data *data = hci_get_drvdata(hdev);
 934         struct urb *urb;
 935         unsigned char *buf;
 936         unsigned int pipe;
 937         int err, size;
 938
 939         BT_DBG("%s", hdev->name);
 940
 941         if (!data->isoc_rx_ep)
 942                 return -ENODEV;
 943
 944         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 945         if (!urb)
 946                 return -ENOMEM;
 947
 948         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 949                                                 BTUSB_MAX_ISOC_FRAMES;
 950
 951         buf = kmalloc(size, mem_flags);
 952         if (!buf) {
 953                 usb_free_urb(urb);
 954                 return -ENOMEM;
 955         }
 956
 957         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 958
 959         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 960                          hdev, data->isoc_rx_ep->bInterval);
 961
 962         urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
 963
 964         __fill_isoc_descriptor(urb, size,
 965                                le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 966
 967         usb_anchor_urb(urb, &data->isoc_anchor);
 968
 969         err = usb_submit_urb(urb, mem_flags);
 970         if (err < 0) {
 971                 if (err != -EPERM && err != -ENODEV)
 972                         bt_dev_err(hdev, "urb %p submission failed (%d)",
 973                                    urb, -err);
 974                 usb_unanchor_urb(urb);
 975         }
 976
 977         usb_free_urb(urb);
 978
 979         return err;
 980 }
 981
 982 static void btusb_diag_complete(struct urb *urb)
 983 {
 984         struct hci_dev *hdev = urb->context;
 985         struct btusb_data *data = hci_get_drvdata(hdev);
 986         int err;
 987
 988         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 989                urb->actual_length);
 990
 991         if (urb->status == 0) {
 992                 struct sk_buff *skb;
 993
 994                 skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC);
 995                 if (skb) {
 996                         skb_put_data(skb, urb->transfer_buffer,
 997                                      urb->actual_length);
 998                         hci_recv_diag(hdev, skb);
 999                 }
1000         } else if (urb->status == -ENOENT) {
1001                 /* Avoid suspend failed when usb_kill_urb */
1002                 return;
1003         }
1004
1005         if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags))
1006                 return;
1007
1008         usb_anchor_urb(urb, &data->diag_anchor);
1009         usb_mark_last_busy(data->udev);
1010
1011         err = usb_submit_urb(urb, GFP_ATOMIC);
1012         if (err < 0) {
1013                 /* -EPERM: urb is being killed;
1014                  * -ENODEV: device got disconnected
1015                  */
1016                 if (err != -EPERM && err != -ENODEV)
1017                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1018                                    urb, -err);
1019                 usb_unanchor_urb(urb);
1020         }
1021 }
1022
1023 static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags)
1024 {
1025         struct btusb_data *data = hci_get_drvdata(hdev);
1026         struct urb *urb;
1027         unsigned char *buf;
1028         unsigned int pipe;
1029         int err, size = HCI_MAX_FRAME_SIZE;
1030
1031         BT_DBG("%s", hdev->name);
1032
1033         if (!data->diag_rx_ep)
1034                 return -ENODEV;
1035
1036         urb = usb_alloc_urb(0, mem_flags);
1037         if (!urb)
1038                 return -ENOMEM;
1039
1040         buf = kmalloc(size, mem_flags);
1041         if (!buf) {
1042                 usb_free_urb(urb);
1043                 return -ENOMEM;
1044         }
1045
1046         pipe = usb_rcvbulkpipe(data->udev, data->diag_rx_ep->bEndpointAddress);
1047
1048         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
1049                           btusb_diag_complete, hdev);
1050
1051         urb->transfer_flags |= URB_FREE_BUFFER;
1052
1053         usb_mark_last_busy(data->udev);
1054         usb_anchor_urb(urb, &data->diag_anchor);
1055
1056         err = usb_submit_urb(urb, mem_flags);
1057         if (err < 0) {
1058                 if (err != -EPERM && err != -ENODEV)
1059                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1060                                    urb, -err);
1061                 usb_unanchor_urb(urb);
1062         }
1063
1064         usb_free_urb(urb);
1065
1066         return err;
1067 }
1068
1069 static void btusb_tx_complete(struct urb *urb)
1070 {
1071         struct sk_buff *skb = urb->context;
1072         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1073         struct btusb_data *data = hci_get_drvdata(hdev);
1074         unsigned long flags;
1075
1076         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1077                urb->actual_length);
1078
1079         if (!test_bit(HCI_RUNNING, &hdev->flags))
1080                 goto done;
1081
1082         if (!urb->status)
1083                 hdev->stat.byte_tx += urb->transfer_buffer_length;
1084         else
1085                 hdev->stat.err_tx++;
1086
1087 done:
1088         spin_lock_irqsave(&data->txlock, flags);
1089         data->tx_in_flight--;
1090         spin_unlock_irqrestore(&data->txlock, flags);
1091
1092         kfree(urb->setup_packet);
1093
1094         kfree_skb(skb);
1095 }
1096
1097 static void btusb_isoc_tx_complete(struct urb *urb)
1098 {
1099         struct sk_buff *skb = urb->context;
1100         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1101
1102         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1103                urb->actual_length);
1104
1105         if (!test_bit(HCI_RUNNING, &hdev->flags))
1106                 goto done;
1107
1108         if (!urb->status)
1109                 hdev->stat.byte_tx += urb->transfer_buffer_length;
1110         else
1111                 hdev->stat.err_tx++;
1112
1113 done:
1114         kfree(urb->setup_packet);
1115
1116         kfree_skb(skb);
1117 }
1118
1119 static int btusb_open(struct hci_dev *hdev)
1120 {
1121         struct btusb_data *data = hci_get_drvdata(hdev);
1122         int err;
1123
1124         BT_DBG("%s", hdev->name);
1125
1126         err = usb_autopm_get_interface(data->intf);
1127         if (err < 0)
1128                 return err;
1129
1130         /* Patching USB firmware files prior to starting any URBs of HCI path
1131          * It is more safe to use USB bulk channel for downloading USB patch
1132          */
1133         if (data->setup_on_usb) {
1134                 err = data->setup_on_usb(hdev);
1135                 if (err < 0)
1136                         return err;
1137         }
1138
1139         data->intf->needs_remote_wakeup = 1;
1140         /* device specific wakeup source enabled and required for USB
1141          * remote wakeup while host is suspended
1142          */
1143         device_wakeup_enable(&data->udev->dev);
1144
1145         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
1146                 goto done;
1147
1148         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
1149         if (err < 0)
1150                 goto failed;
1151
1152         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1153         if (err < 0) {
1154                 usb_kill_anchored_urbs(&data->intr_anchor);
1155                 goto failed;
1156         }
1157
1158         set_bit(BTUSB_BULK_RUNNING, &data->flags);
1159         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1160
1161         if (data->diag) {
1162                 if (!btusb_submit_diag_urb(hdev, GFP_KERNEL))
1163                         set_bit(BTUSB_DIAG_RUNNING, &data->flags);
1164         }
1165
1166 done:
1167         usb_autopm_put_interface(data->intf);
1168         return 0;
1169
1170 failed:
1171         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1172         usb_autopm_put_interface(data->intf);
1173         return err;
1174 }
1175
1176 static void btusb_stop_traffic(struct btusb_data *data)
1177 {
1178         usb_kill_anchored_urbs(&data->intr_anchor);
1179         usb_kill_anchored_urbs(&data->bulk_anchor);
1180         usb_kill_anchored_urbs(&data->isoc_anchor);
1181         usb_kill_anchored_urbs(&data->diag_anchor);
1182 }
1183
1184 static int btusb_close(struct hci_dev *hdev)
1185 {
1186         struct btusb_data *data = hci_get_drvdata(hdev);
1187         int err;
1188
1189         BT_DBG("%s", hdev->name);
1190
1191         cancel_work_sync(&data->work);
1192         cancel_work_sync(&data->waker);
1193
1194         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1195         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1196         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1197         clear_bit(BTUSB_DIAG_RUNNING, &data->flags);
1198
1199         btusb_stop_traffic(data);
1200         btusb_free_frags(data);
1201
1202         err = usb_autopm_get_interface(data->intf);
1203         if (err < 0)
1204                 goto failed;
1205
1206         data->intf->needs_remote_wakeup = 0;
1207         device_wakeup_disable(&data->udev->dev);
1208         usb_autopm_put_interface(data->intf);
1209
1210 failed:
1211         usb_scuttle_anchored_urbs(&data->deferred);
1212         return 0;
1213 }
1214
1215 static int btusb_flush(struct hci_dev *hdev)
1216 {
1217         struct btusb_data *data = hci_get_drvdata(hdev);
1218
1219         BT_DBG("%s", hdev->name);
1220
1221         usb_kill_anchored_urbs(&data->tx_anchor);
1222         btusb_free_frags(data);
1223
1224         return 0;
1225 }
1226
1227 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
1228 {
1229         struct btusb_data *data = hci_get_drvdata(hdev);
1230         struct usb_ctrlrequest *dr;
1231         struct urb *urb;
1232         unsigned int pipe;
1233
1234         urb = usb_alloc_urb(0, GFP_KERNEL);
1235         if (!urb)
1236                 return ERR_PTR(-ENOMEM);
1237
1238         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
1239         if (!dr) {
1240                 usb_free_urb(urb);
1241                 return ERR_PTR(-ENOMEM);
1242         }
1243
1244         dr->bRequestType = data->cmdreq_type;
1245         dr->bRequest     = data->cmdreq;
1246         dr->wIndex       = 0;
1247         dr->wValue       = 0;
1248         dr->wLength      = __cpu_to_le16(skb->len);
1249
1250         pipe = usb_sndctrlpipe(data->udev, 0x00);
1251
1252         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
1253                              skb->data, skb->len, btusb_tx_complete, skb);
1254
1255         skb->dev = (void *)hdev;
1256
1257         return urb;
1258 }
1259
1260 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
1261 {
1262         struct btusb_data *data = hci_get_drvdata(hdev);
1263         struct urb *urb;
1264         unsigned int pipe;
1265
1266         if (!data->bulk_tx_ep)
1267                 return ERR_PTR(-ENODEV);
1268
1269         urb = usb_alloc_urb(0, GFP_KERNEL);
1270         if (!urb)
1271                 return ERR_PTR(-ENOMEM);
1272
1273         pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1274
1275         usb_fill_bulk_urb(urb, data->udev, pipe,
1276                           skb->data, skb->len, btusb_tx_complete, skb);
1277
1278         skb->dev = (void *)hdev;
1279
1280         return urb;
1281 }
1282
1283 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1284 {
1285         struct btusb_data *data = hci_get_drvdata(hdev);
1286         struct urb *urb;
1287         unsigned int pipe;
1288
1289         if (!data->isoc_tx_ep)
1290                 return ERR_PTR(-ENODEV);
1291
1292         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1293         if (!urb)
1294                 return ERR_PTR(-ENOMEM);
1295
1296         pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1297
1298         usb_fill_int_urb(urb, data->udev, pipe,
1299                          skb->data, skb->len, btusb_isoc_tx_complete,
1300                          skb, data->isoc_tx_ep->bInterval);
1301
1302         urb->transfer_flags  = URB_ISO_ASAP;
1303
1304         __fill_isoc_descriptor(urb, skb->len,
1305                                le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1306
1307         skb->dev = (void *)hdev;
1308
1309         return urb;
1310 }
1311
1312 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1313 {
1314         struct btusb_data *data = hci_get_drvdata(hdev);
1315         int err;
1316
1317         usb_anchor_urb(urb, &data->tx_anchor);
1318
1319         err = usb_submit_urb(urb, GFP_KERNEL);
1320         if (err < 0) {
1321                 if (err != -EPERM && err != -ENODEV)
1322                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1323                                    urb, -err);
1324                 kfree(urb->setup_packet);
1325                 usb_unanchor_urb(urb);
1326         } else {
1327                 usb_mark_last_busy(data->udev);
1328         }
1329
1330         usb_free_urb(urb);
1331         return err;
1332 }
1333
1334 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1335 {
1336         struct btusb_data *data = hci_get_drvdata(hdev);
1337         unsigned long flags;
1338         bool suspending;
1339
1340         spin_lock_irqsave(&data->txlock, flags);
1341         suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1342         if (!suspending)
1343                 data->tx_in_flight++;
1344         spin_unlock_irqrestore(&data->txlock, flags);
1345
1346         if (!suspending)
1347                 return submit_tx_urb(hdev, urb);
1348
1349         usb_anchor_urb(urb, &data->deferred);
1350         schedule_work(&data->waker);
1351
1352         usb_free_urb(urb);
1353         return 0;
1354 }
1355
1356 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1357 {
1358         struct urb *urb;
1359
1360         BT_DBG("%s", hdev->name);
1361
1362         switch (hci_skb_pkt_type(skb)) {
1363         case HCI_COMMAND_PKT:
1364                 urb = alloc_ctrl_urb(hdev, skb);
1365                 if (IS_ERR(urb))
1366                         return PTR_ERR(urb);
1367
1368                 hdev->stat.cmd_tx++;
1369                 return submit_or_queue_tx_urb(hdev, urb);
1370
1371         case HCI_ACLDATA_PKT:
1372                 urb = alloc_bulk_urb(hdev, skb);
1373                 if (IS_ERR(urb))
1374                         return PTR_ERR(urb);
1375
1376                 hdev->stat.acl_tx++;
1377                 return submit_or_queue_tx_urb(hdev, urb);
1378
1379         case HCI_SCODATA_PKT:
1380                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1381                         return -ENODEV;
1382
1383                 urb = alloc_isoc_urb(hdev, skb);
1384                 if (IS_ERR(urb))
1385                         return PTR_ERR(urb);
1386
1387                 hdev->stat.sco_tx++;
1388                 return submit_tx_urb(hdev, urb);
1389         }
1390
1391         return -EILSEQ;
1392 }
1393
1394 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1395 {
1396         struct btusb_data *data = hci_get_drvdata(hdev);
1397
1398         BT_DBG("%s evt %d", hdev->name, evt);
1399
1400         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1401                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1402                 schedule_work(&data->work);
1403         }
1404 }
1405
1406 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1407 {
1408         struct btusb_data *data = hci_get_drvdata(hdev);
1409         struct usb_interface *intf = data->isoc;
1410         struct usb_endpoint_descriptor *ep_desc;
1411         int i, err;
1412
1413         if (!data->isoc)
1414                 return -ENODEV;
1415
1416         err = usb_set_interface(data->udev, data->isoc_ifnum, altsetting);
1417         if (err < 0) {
1418                 bt_dev_err(hdev, "setting interface failed (%d)", -err);
1419                 return err;
1420         }
1421
1422         data->isoc_altsetting = altsetting;
1423
1424         data->isoc_tx_ep = NULL;
1425         data->isoc_rx_ep = NULL;
1426
1427         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1428                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1429
1430                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1431                         data->isoc_tx_ep = ep_desc;
1432                         continue;
1433                 }
1434
1435                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1436                         data->isoc_rx_ep = ep_desc;
1437                         continue;
1438                 }
1439         }
1440
1441         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1442                 bt_dev_err(hdev, "invalid SCO descriptors");
1443                 return -ENODEV;
1444         }
1445
1446         return 0;
1447 }
1448
1449 static void btusb_work(struct work_struct *work)
1450 {
1451         struct btusb_data *data = container_of(work, struct btusb_data, work);
1452         struct hci_dev *hdev = data->hdev;
1453         int new_alts;
1454         int err;
1455
1456         if (data->sco_num > 0) {
1457                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1458                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1459                         if (err < 0) {
1460                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1461                                 usb_kill_anchored_urbs(&data->isoc_anchor);
1462                                 return;
1463                         }
1464
1465                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1466                 }
1467
1468                 if (hdev->voice_setting & 0x0020) {
1469                         static const int alts[3] = { 2, 4, 5 };
1470
1471                         new_alts = alts[data->sco_num - 1];
1472                 } else {
1473                         new_alts = data->sco_num;
1474                 }
1475
1476                 if (data->isoc_altsetting != new_alts) {
1477                         unsigned long flags;
1478
1479                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1480                         usb_kill_anchored_urbs(&data->isoc_anchor);
1481
1482                         /* When isochronous alternate setting needs to be
1483                          * changed, because SCO connection has been added
1484                          * or removed, a packet fragment may be left in the
1485                          * reassembling state. This could lead to wrongly
1486                          * assembled fragments.
1487                          *
1488                          * Clear outstanding fragment when selecting a new
1489                          * alternate setting.
1490                          */
1491                         spin_lock_irqsave(&data->rxlock, flags);
1492                         kfree_skb(data->sco_skb);
1493                         data->sco_skb = NULL;
1494                         spin_unlock_irqrestore(&data->rxlock, flags);
1495
1496                         if (__set_isoc_interface(hdev, new_alts) < 0)
1497                                 return;
1498                 }
1499
1500                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1501                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1502                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1503                         else
1504                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1505                 }
1506         } else {
1507                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1508                 usb_kill_anchored_urbs(&data->isoc_anchor);
1509
1510                 __set_isoc_interface(hdev, 0);
1511                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1512                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1513         }
1514 }
1515
1516 static void btusb_waker(struct work_struct *work)
1517 {
1518         struct btusb_data *data = container_of(work, struct btusb_data, waker);
1519         int err;
1520
1521         err = usb_autopm_get_interface(data->intf);
1522         if (err < 0)
1523                 return;
1524
1525         usb_autopm_put_interface(data->intf);
1526 }
1527
1528 static int btusb_setup_bcm92035(struct hci_dev *hdev)
1529 {
1530         struct sk_buff *skb;
1531         u8 val = 0x00;
1532
1533         BT_DBG("%s", hdev->name);
1534
1535         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1536         if (IS_ERR(skb))
1537                 bt_dev_err(hdev, "BCM92035 command failed (%ld)", PTR_ERR(skb));
1538         else
1539                 kfree_skb(skb);
1540
1541         return 0;
1542 }
1543
1544 static int btusb_setup_csr(struct hci_dev *hdev)
1545 {
1546         struct hci_rp_read_local_version *rp;
1547         struct sk_buff *skb;
1548
1549         BT_DBG("%s", hdev->name);
1550
1551         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1552                              HCI_INIT_TIMEOUT);
1553         if (IS_ERR(skb)) {
1554                 int err = PTR_ERR(skb);
1555                 bt_dev_err(hdev, "CSR: Local version failed (%d)", err);
1556                 return err;
1557         }
1558
1559         if (skb->len != sizeof(struct hci_rp_read_local_version)) {
1560                 bt_dev_err(hdev, "CSR: Local version length mismatch");
1561                 kfree_skb(skb);
1562                 return -EIO;
1563         }
1564
1565         rp = (struct hci_rp_read_local_version *)skb->data;
1566
1567         /* Detect controllers which aren't real CSR ones. */
1568         if (le16_to_cpu(rp->manufacturer) != 10 ||
1569             le16_to_cpu(rp->lmp_subver) == 0x0c5c) {
1570                 /* Clear the reset quirk since this is not an actual
1571                  * early Bluetooth 1.1 device from CSR.
1572                  */
1573                 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1574
1575                 /* These fake CSR controllers have all a broken
1576                  * stored link key handling and so just disable it.
1577                  */
1578                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
1579         }
1580
1581         kfree_skb(skb);
1582
1583         return 0;
1584 }
1585
1586 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1587                                                        struct intel_version *ver)
1588 {
1589         const struct firmware *fw;
1590         char fwname[64];
1591         int ret;
1592
1593         snprintf(fwname, sizeof(fwname),
1594                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1595                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
1596                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1597                  ver->fw_build_ww, ver->fw_build_yy);
1598
1599         ret = request_firmware(&fw, fwname, &hdev->dev);
1600         if (ret < 0) {
1601                 if (ret == -EINVAL) {
1602                         bt_dev_err(hdev, "Intel firmware file request failed (%d)",
1603                                    ret);
1604                         return NULL;
1605                 }
1606
1607                 bt_dev_err(hdev, "failed to open Intel firmware file: %s (%d)",
1608                            fwname, ret);
1609
1610                 /* If the correct firmware patch file is not found, use the
1611                  * default firmware patch file instead
1612                  */
1613                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1614                          ver->hw_platform, ver->hw_variant);
1615                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1616                         bt_dev_err(hdev, "failed to open default fw file: %s",
1617                                    fwname);
1618                         return NULL;
1619                 }
1620         }
1621
1622         bt_dev_info(hdev, "Intel Bluetooth firmware file: %s", fwname);
1623
1624         return fw;
1625 }
1626
1627 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1628                                       const struct firmware *fw,
1629                                       const u8 **fw_ptr, int *disable_patch)
1630 {
1631         struct sk_buff *skb;
1632         struct hci_command_hdr *cmd;
1633         const u8 *cmd_param;
1634         struct hci_event_hdr *evt = NULL;
1635         const u8 *evt_param = NULL;
1636         int remain = fw->size - (*fw_ptr - fw->data);
1637
1638         /* The first byte indicates the types of the patch command or event.
1639          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1640          * in the current firmware buffer doesn't start with 0x01 or
1641          * the size of remain buffer is smaller than HCI command header,
1642          * the firmware file is corrupted and it should stop the patching
1643          * process.
1644          */
1645         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1646                 bt_dev_err(hdev, "Intel fw corrupted: invalid cmd read");
1647                 return -EINVAL;
1648         }
1649         (*fw_ptr)++;
1650         remain--;
1651
1652         cmd = (struct hci_command_hdr *)(*fw_ptr);
1653         *fw_ptr += sizeof(*cmd);
1654         remain -= sizeof(*cmd);
1655
1656         /* Ensure that the remain firmware data is long enough than the length
1657          * of command parameter. If not, the firmware file is corrupted.
1658          */
1659         if (remain < cmd->plen) {
1660                 bt_dev_err(hdev, "Intel fw corrupted: invalid cmd len");
1661                 return -EFAULT;
1662         }
1663
1664         /* If there is a command that loads a patch in the firmware
1665          * file, then enable the patch upon success, otherwise just
1666          * disable the manufacturer mode, for example patch activation
1667          * is not required when the default firmware patch file is used
1668          * because there are no patch data to load.
1669          */
1670         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1671                 *disable_patch = 0;
1672
1673         cmd_param = *fw_ptr;
1674         *fw_ptr += cmd->plen;
1675         remain -= cmd->plen;
1676
1677         /* This reads the expected events when the above command is sent to the
1678          * device. Some vendor commands expects more than one events, for
1679          * example command status event followed by vendor specific event.
1680          * For this case, it only keeps the last expected event. so the command
1681          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1682          * last expected event.
1683          */
1684         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1685                 (*fw_ptr)++;
1686                 remain--;
1687
1688                 evt = (struct hci_event_hdr *)(*fw_ptr);
1689                 *fw_ptr += sizeof(*evt);
1690                 remain -= sizeof(*evt);
1691
1692                 if (remain < evt->plen) {
1693                         bt_dev_err(hdev, "Intel fw corrupted: invalid evt len");
1694                         return -EFAULT;
1695                 }
1696
1697                 evt_param = *fw_ptr;
1698                 *fw_ptr += evt->plen;
1699                 remain -= evt->plen;
1700         }
1701
1702         /* Every HCI commands in the firmware file has its correspond event.
1703          * If event is not found or remain is smaller than zero, the firmware
1704          * file is corrupted.
1705          */
1706         if (!evt || !evt_param || remain < 0) {
1707                 bt_dev_err(hdev, "Intel fw corrupted: invalid evt read");
1708                 return -EFAULT;
1709         }
1710
1711         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1712                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1713         if (IS_ERR(skb)) {
1714                 bt_dev_err(hdev, "sending Intel patch command (0x%4.4x) failed (%ld)",
1715                            cmd->opcode, PTR_ERR(skb));
1716                 return PTR_ERR(skb);
1717         }
1718
1719         /* It ensures that the returned event matches the event data read from
1720          * the firmware file. At fist, it checks the length and then
1721          * the contents of the event.
1722          */
1723         if (skb->len != evt->plen) {
1724                 bt_dev_err(hdev, "mismatch event length (opcode 0x%4.4x)",
1725                            le16_to_cpu(cmd->opcode));
1726                 kfree_skb(skb);
1727                 return -EFAULT;
1728         }
1729
1730         if (memcmp(skb->data, evt_param, evt->plen)) {
1731                 bt_dev_err(hdev, "mismatch event parameter (opcode 0x%4.4x)",
1732                            le16_to_cpu(cmd->opcode));
1733                 kfree_skb(skb);
1734                 return -EFAULT;
1735         }
1736         kfree_skb(skb);
1737
1738         return 0;
1739 }
1740
1741 static int btusb_setup_intel(struct hci_dev *hdev)
1742 {
1743         struct sk_buff *skb;
1744         const struct firmware *fw;
1745         const u8 *fw_ptr;
1746         int disable_patch, err;
1747         struct intel_version ver;
1748
1749         BT_DBG("%s", hdev->name);
1750
1751         /* The controller has a bug with the first HCI command sent to it
1752          * returning number of completed commands as zero. This would stall the
1753          * command processing in the Bluetooth core.
1754          *
1755          * As a workaround, send HCI Reset command first which will reset the
1756          * number of completed commands and allow normal command processing
1757          * from now on.
1758          */
1759         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1760         if (IS_ERR(skb)) {
1761                 bt_dev_err(hdev, "sending initial HCI reset command failed (%ld)",
1762                            PTR_ERR(skb));
1763                 return PTR_ERR(skb);
1764         }
1765         kfree_skb(skb);
1766
1767         /* Read Intel specific controller version first to allow selection of
1768          * which firmware file to load.
1769          *
1770          * The returned information are hardware variant and revision plus
1771          * firmware variant, revision and build number.
1772          */
1773         err = btintel_read_version(hdev, &ver);
1774         if (err)
1775                 return err;
1776
1777         bt_dev_info(hdev, "read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1778                     ver.hw_platform, ver.hw_variant, ver.hw_revision,
1779                     ver.fw_variant,  ver.fw_revision, ver.fw_build_num,
1780                     ver.fw_build_ww, ver.fw_build_yy, ver.fw_patch_num);
1781
1782         /* fw_patch_num indicates the version of patch the device currently
1783          * have. If there is no patch data in the device, it is always 0x00.
1784          * So, if it is other than 0x00, no need to patch the device again.
1785          */
1786         if (ver.fw_patch_num) {
1787                 bt_dev_info(hdev, "Intel device is already patched. "
1788                             "patch num: %02x", ver.fw_patch_num);
1789                 goto complete;
1790         }
1791
1792         /* Opens the firmware patch file based on the firmware version read
1793          * from the controller. If it fails to open the matching firmware
1794          * patch file, it tries to open the default firmware patch file.
1795          * If no patch file is found, allow the device to operate without
1796          * a patch.
1797          */
1798         fw = btusb_setup_intel_get_fw(hdev, &ver);
1799         if (!fw)
1800                 goto complete;
1801         fw_ptr = fw->data;
1802
1803         /* Enable the manufacturer mode of the controller.
1804          * Only while this mode is enabled, the driver can download the
1805          * firmware patch data and configuration parameters.
1806          */
1807         err = btintel_enter_mfg(hdev);
1808         if (err) {
1809                 release_firmware(fw);
1810                 return err;
1811         }
1812
1813         disable_patch = 1;
1814
1815         /* The firmware data file consists of list of Intel specific HCI
1816          * commands and its expected events. The first byte indicates the
1817          * type of the message, either HCI command or HCI event.
1818          *
1819          * It reads the command and its expected event from the firmware file,
1820          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1821          * the returned event is compared with the event read from the firmware
1822          * file and it will continue until all the messages are downloaded to
1823          * the controller.
1824          *
1825          * Once the firmware patching is completed successfully,
1826          * the manufacturer mode is disabled with reset and activating the
1827          * downloaded patch.
1828          *
1829          * If the firmware patching fails, the manufacturer mode is
1830          * disabled with reset and deactivating the patch.
1831          *
1832          * If the default patch file is used, no reset is done when disabling
1833          * the manufacturer.
1834          */
1835         while (fw->size > fw_ptr - fw->data) {
1836                 int ret;
1837
1838                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1839                                                  &disable_patch);
1840                 if (ret < 0)
1841                         goto exit_mfg_deactivate;
1842         }
1843
1844         release_firmware(fw);
1845
1846         if (disable_patch)
1847                 goto exit_mfg_disable;
1848
1849         /* Patching completed successfully and disable the manufacturer mode
1850          * with reset and activate the downloaded firmware patches.
1851          */
1852         err = btintel_exit_mfg(hdev, true, true);
1853         if (err)
1854                 return err;
1855
1856         bt_dev_info(hdev, "Intel firmware patch completed and activated");
1857
1858         goto complete;
1859
1860 exit_mfg_disable:
1861         /* Disable the manufacturer mode without reset */
1862         err = btintel_exit_mfg(hdev, false, false);
1863         if (err)
1864                 return err;
1865
1866         bt_dev_info(hdev, "Intel firmware patch completed");
1867
1868         goto complete;
1869
1870 exit_mfg_deactivate:
1871         release_firmware(fw);
1872
1873         /* Patching failed. Disable the manufacturer mode with reset and
1874          * deactivate the downloaded firmware patches.
1875          */
1876         err = btintel_exit_mfg(hdev, true, false);
1877         if (err)
1878                 return err;
1879
1880         bt_dev_info(hdev, "Intel firmware patch completed and deactivated");
1881
1882 complete:
1883         /* Set the event mask for Intel specific vendor events. This enables
1884          * a few extra events that are useful during general operation.
1885          */
1886         btintel_set_event_mask_mfg(hdev, false);
1887
1888         btintel_check_bdaddr(hdev);
1889         return 0;
1890 }
1891
1892 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
1893 {
1894         struct sk_buff *skb;
1895         struct hci_event_hdr *hdr;
1896         struct hci_ev_cmd_complete *evt;
1897
1898         skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_KERNEL);
1899         if (!skb)
1900                 return -ENOMEM;
1901
1902         hdr = skb_put(skb, sizeof(*hdr));
1903         hdr->evt = HCI_EV_CMD_COMPLETE;
1904         hdr->plen = sizeof(*evt) + 1;
1905
1906         evt = skb_put(skb, sizeof(*evt));
1907         evt->ncmd = 0x01;
1908         evt->opcode = cpu_to_le16(opcode);
1909
1910         skb_put_u8(skb, 0x00);
1911
1912         hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
1913
1914         return hci_recv_frame(hdev, skb);
1915 }
1916
1917 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
1918                                  int count)
1919 {
1920         /* When the device is in bootloader mode, then it can send
1921          * events via the bulk endpoint. These events are treated the
1922          * same way as the ones received from the interrupt endpoint.
1923          */
1924         if (test_bit(BTUSB_BOOTLOADER, &data->flags))
1925                 return btusb_recv_intr(data, buffer, count);
1926
1927         return btusb_recv_bulk(data, buffer, count);
1928 }
1929
1930 static void btusb_intel_bootup(struct btusb_data *data, const void *ptr,
1931                                unsigned int len)
1932 {
1933         const struct intel_bootup *evt = ptr;
1934
1935         if (len != sizeof(*evt))
1936                 return;
1937
1938         if (test_and_clear_bit(BTUSB_BOOTING, &data->flags)) {
1939                 smp_mb__after_atomic();
1940                 wake_up_bit(&data->flags, BTUSB_BOOTING);
1941         }
1942 }
1943
1944 static void btusb_intel_secure_send_result(struct btusb_data *data,
1945                                            const void *ptr, unsigned int len)
1946 {
1947         const struct intel_secure_send_result *evt = ptr;
1948
1949         if (len != sizeof(*evt))
1950                 return;
1951
1952         if (evt->result)
1953                 set_bit(BTUSB_FIRMWARE_FAILED, &data->flags);
1954
1955         if (test_and_clear_bit(BTUSB_DOWNLOADING, &data->flags) &&
1956             test_bit(BTUSB_FIRMWARE_LOADED, &data->flags)) {
1957                 smp_mb__after_atomic();
1958                 wake_up_bit(&data->flags, BTUSB_DOWNLOADING);
1959         }
1960 }
1961
1962 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
1963 {
1964         struct btusb_data *data = hci_get_drvdata(hdev);
1965
1966         if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1967                 struct hci_event_hdr *hdr = (void *)skb->data;
1968
1969                 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
1970                     hdr->plen > 0) {
1971                         const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
1972                         unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
1973
1974                         switch (skb->data[2]) {
1975                         case 0x02:
1976                                 /* When switching to the operational firmware
1977                                  * the device sends a vendor specific event
1978                                  * indicating that the bootup completed.
1979                                  */
1980                                 btusb_intel_bootup(data, ptr, len);
1981                                 break;
1982                         case 0x06:
1983                                 /* When the firmware loading completes the
1984                                  * device sends out a vendor specific event
1985                                  * indicating the result of the firmware
1986                                  * loading.
1987                                  */
1988                                 btusb_intel_secure_send_result(data, ptr, len);
1989                                 break;
1990                         }
1991                 }
1992         }
1993
1994         return hci_recv_frame(hdev, skb);
1995 }
1996
1997 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
1998 {
1999         struct btusb_data *data = hci_get_drvdata(hdev);
2000         struct urb *urb;
2001
2002         BT_DBG("%s", hdev->name);
2003
2004         switch (hci_skb_pkt_type(skb)) {
2005         case HCI_COMMAND_PKT:
2006                 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
2007                         struct hci_command_hdr *cmd = (void *)skb->data;
2008                         __u16 opcode = le16_to_cpu(cmd->opcode);
2009
2010                         /* When in bootloader mode and the command 0xfc09
2011                          * is received, it needs to be send down the
2012                          * bulk endpoint. So allocate a bulk URB instead.
2013                          */
2014                         if (opcode == 0xfc09)
2015                                 urb = alloc_bulk_urb(hdev, skb);
2016                         else
2017                                 urb = alloc_ctrl_urb(hdev, skb);
2018
2019                         /* When the 0xfc01 command is issued to boot into
2020                          * the operational firmware, it will actually not
2021                          * send a command complete event. To keep the flow
2022                          * control working inject that event here.
2023                          */
2024                         if (opcode == 0xfc01)
2025                                 inject_cmd_complete(hdev, opcode);
2026                 } else {
2027                         urb = alloc_ctrl_urb(hdev, skb);
2028                 }
2029                 if (IS_ERR(urb))
2030                         return PTR_ERR(urb);
2031
2032                 hdev->stat.cmd_tx++;
2033                 return submit_or_queue_tx_urb(hdev, urb);
2034
2035         case HCI_ACLDATA_PKT:
2036                 urb = alloc_bulk_urb(hdev, skb);
2037                 if (IS_ERR(urb))
2038                         return PTR_ERR(urb);
2039
2040                 hdev->stat.acl_tx++;
2041                 return submit_or_queue_tx_urb(hdev, urb);
2042
2043         case HCI_SCODATA_PKT:
2044                 if (hci_conn_num(hdev, SCO_LINK) < 1)
2045                         return -ENODEV;
2046
2047                 urb = alloc_isoc_urb(hdev, skb);
2048                 if (IS_ERR(urb))
2049                         return PTR_ERR(urb);
2050
2051                 hdev->stat.sco_tx++;
2052                 return submit_tx_urb(hdev, urb);
2053         }
2054
2055         return -EILSEQ;
2056 }
2057
2058 static int btusb_setup_intel_new(struct hci_dev *hdev)
2059 {
2060         struct btusb_data *data = hci_get_drvdata(hdev);
2061         struct intel_version ver;
2062         struct intel_boot_params params;
2063         const struct firmware *fw;
2064         u32 boot_param;
2065         char fwname[64];
2066         ktime_t calltime, delta, rettime;
2067         unsigned long long duration;
2068         int err;
2069
2070         BT_DBG("%s", hdev->name);
2071
2072         /* Set the default boot parameter to 0x0 and it is updated to
2073          * SKU specific boot parameter after reading Intel_Write_Boot_Params
2074          * command while downloading the firmware.
2075          */
2076         boot_param = 0x00000000;
2077
2078         calltime = ktime_get();
2079
2080         /* Read the Intel version information to determine if the device
2081          * is in bootloader mode or if it already has operational firmware
2082          * loaded.
2083          */
2084         err = btintel_read_version(hdev, &ver);
2085         if (err)
2086                 return err;
2087
2088         /* The hardware platform number has a fixed value of 0x37 and
2089          * for now only accept this single value.
2090          */
2091         if (ver.hw_platform != 0x37) {
2092                 bt_dev_err(hdev, "Unsupported Intel hardware platform (%u)",
2093                            ver.hw_platform);
2094                 return -EINVAL;
2095         }
2096
2097         /* Check for supported iBT hardware variants of this firmware
2098          * loading method.
2099          *
2100          * This check has been put in place to ensure correct forward
2101          * compatibility options when newer hardware variants come along.
2102          */
2103         switch (ver.hw_variant) {
2104         case 0x0b:      /* SfP */
2105         case 0x0c:      /* WsP */
2106         case 0x11:      /* JfP */
2107         case 0x12:      /* ThP */
2108         case 0x13:      /* HrP */
2109         case 0x14:      /* QnJ, IcP */
2110                 break;
2111         default:
2112                 bt_dev_err(hdev, "Unsupported Intel hardware variant (%u)",
2113                            ver.hw_variant);
2114                 return -EINVAL;
2115         }
2116
2117         btintel_version_info(hdev, &ver);
2118
2119         /* The firmware variant determines if the device is in bootloader
2120          * mode or is running operational firmware. The value 0x06 identifies
2121          * the bootloader and the value 0x23 identifies the operational
2122          * firmware.
2123          *
2124          * When the operational firmware is already present, then only
2125          * the check for valid Bluetooth device address is needed. This
2126          * determines if the device will be added as configured or
2127          * unconfigured controller.
2128          *
2129          * It is not possible to use the Secure Boot Parameters in this
2130          * case since that command is only available in bootloader mode.
2131          */
2132         if (ver.fw_variant == 0x23) {
2133                 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2134                 btintel_check_bdaddr(hdev);
2135                 return 0;
2136         }
2137
2138         /* If the device is not in bootloader mode, then the only possible
2139          * choice is to return an error and abort the device initialization.
2140          */
2141         if (ver.fw_variant != 0x06) {
2142                 bt_dev_err(hdev, "Unsupported Intel firmware variant (%u)",
2143                            ver.fw_variant);
2144                 return -ENODEV;
2145         }
2146
2147         /* Read the secure boot parameters to identify the operating
2148          * details of the bootloader.
2149          */
2150         err = btintel_read_boot_params(hdev, &params);
2151         if (err)
2152                 return err;
2153
2154         /* It is required that every single firmware fragment is acknowledged
2155          * with a command complete event. If the boot parameters indicate
2156          * that this bootloader does not send them, then abort the setup.
2157          */
2158         if (params.limited_cce != 0x00) {
2159                 bt_dev_err(hdev, "Unsupported Intel firmware loading method (%u)",
2160                            params.limited_cce);
2161                 return -EINVAL;
2162         }
2163
2164         /* If the OTP has no valid Bluetooth device address, then there will
2165          * also be no valid address for the operational firmware.
2166          */
2167         if (!bacmp(&params.otp_bdaddr, BDADDR_ANY)) {
2168                 bt_dev_info(hdev, "No device address configured");
2169                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2170         }
2171
2172         /* With this Intel bootloader only the hardware variant and device
2173          * revision information are used to select the right firmware for SfP
2174          * and WsP.
2175          *
2176          * The firmware filename is ibt-<hw_variant>-<dev_revid>.sfi.
2177          *
2178          * Currently the supported hardware variants are:
2179          *   11 (0x0b) for iBT3.0 (LnP/SfP)
2180          *   12 (0x0c) for iBT3.5 (WsP)
2181          *
2182          * For ThP/JfP and for future SKU's, the FW name varies based on HW
2183          * variant, HW revision and FW revision, as these are dependent on CNVi
2184          * and RF Combination.
2185          *
2186          *   17 (0x11) for iBT3.5 (JfP)
2187          *   18 (0x12) for iBT3.5 (ThP)
2188          *
2189          * The firmware file name for these will be
2190          * ibt-<hw_variant>-<hw_revision>-<fw_revision>.sfi.
2191          *
2192          */
2193         switch (ver.hw_variant) {
2194         case 0x0b:      /* SfP */
2195         case 0x0c:      /* WsP */
2196                 snprintf(fwname, sizeof(fwname), "intel/ibt-%u-%u.sfi",
2197                          le16_to_cpu(ver.hw_variant),
2198                          le16_to_cpu(params.dev_revid));
2199                 break;
2200         case 0x11:      /* JfP */
2201         case 0x12:      /* ThP */
2202         case 0x13:      /* HrP */
2203         case 0x14:      /* QnJ, IcP */
2204                 snprintf(fwname, sizeof(fwname), "intel/ibt-%u-%u-%u.sfi",
2205                          le16_to_cpu(ver.hw_variant),
2206                          le16_to_cpu(ver.hw_revision),
2207                          le16_to_cpu(ver.fw_revision));
2208                 break;
2209         default:
2210                 bt_dev_err(hdev, "Unsupported Intel firmware naming");
2211                 return -EINVAL;
2212         }
2213
2214         err = request_firmware(&fw, fwname, &hdev->dev);
2215         if (err < 0) {
2216                 bt_dev_err(hdev, "Failed to load Intel firmware file (%d)", err);
2217                 return err;
2218         }
2219
2220         bt_dev_info(hdev, "Found device firmware: %s", fwname);
2221
2222         /* Save the DDC file name for later use to apply once the firmware
2223          * downloading is done.
2224          */
2225         switch (ver.hw_variant) {
2226         case 0x0b:      /* SfP */
2227         case 0x0c:      /* WsP */
2228                 snprintf(fwname, sizeof(fwname), "intel/ibt-%u-%u.ddc",
2229                          le16_to_cpu(ver.hw_variant),
2230                          le16_to_cpu(params.dev_revid));
2231                 break;
2232         case 0x11:      /* JfP */
2233         case 0x12:      /* ThP */
2234         case 0x13:      /* HrP */
2235         case 0x14:      /* QnJ, IcP */
2236                 snprintf(fwname, sizeof(fwname), "intel/ibt-%u-%u-%u.ddc",
2237                          le16_to_cpu(ver.hw_variant),
2238                          le16_to_cpu(ver.hw_revision),
2239                          le16_to_cpu(ver.fw_revision));
2240                 break;
2241         default:
2242                 bt_dev_err(hdev, "Unsupported Intel firmware naming");
2243                 return -EINVAL;
2244         }
2245
2246         if (fw->size < 644) {
2247                 bt_dev_err(hdev, "Invalid size of firmware file (%zu)",
2248                            fw->size);
2249                 err = -EBADF;
2250                 goto done;
2251         }
2252
2253         set_bit(BTUSB_DOWNLOADING, &data->flags);
2254
2255         /* Start firmware downloading and get boot parameter */
2256         err = btintel_download_firmware(hdev, fw, &boot_param);
2257         if (err < 0)
2258                 goto done;
2259
2260         set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2261
2262         bt_dev_info(hdev, "Waiting for firmware download to complete");
2263
2264         /* Before switching the device into operational mode and with that
2265          * booting the loaded firmware, wait for the bootloader notification
2266          * that all fragments have been successfully received.
2267          *
2268          * When the event processing receives the notification, then the
2269          * BTUSB_DOWNLOADING flag will be cleared.
2270          *
2271          * The firmware loading should not take longer than 5 seconds
2272          * and thus just timeout if that happens and fail the setup
2273          * of this device.
2274          */
2275         err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
2276                                   TASK_INTERRUPTIBLE,
2277                                   msecs_to_jiffies(5000));
2278         if (err == -EINTR) {
2279                 bt_dev_err(hdev, "Firmware loading interrupted");
2280                 goto done;
2281         }
2282
2283         if (err) {
2284                 bt_dev_err(hdev, "Firmware loading timeout");
2285                 err = -ETIMEDOUT;
2286                 goto done;
2287         }
2288
2289         if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) {
2290                 bt_dev_err(hdev, "Firmware loading failed");
2291                 err = -ENOEXEC;
2292                 goto done;
2293         }
2294
2295         rettime = ktime_get();
2296         delta = ktime_sub(rettime, calltime);
2297         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2298
2299         bt_dev_info(hdev, "Firmware loaded in %llu usecs", duration);
2300
2301 done:
2302         release_firmware(fw);
2303
2304         if (err < 0)
2305                 return err;
2306
2307         calltime = ktime_get();
2308
2309         set_bit(BTUSB_BOOTING, &data->flags);
2310
2311         err = btintel_send_intel_reset(hdev, boot_param);
2312         if (err)
2313                 return err;
2314
2315         /* The bootloader will not indicate when the device is ready. This
2316          * is done by the operational firmware sending bootup notification.
2317          *
2318          * Booting into operational firmware should not take longer than
2319          * 1 second. However if that happens, then just fail the setup
2320          * since something went wrong.
2321          */
2322         bt_dev_info(hdev, "Waiting for device to boot");
2323
2324         err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING,
2325                                   TASK_INTERRUPTIBLE,
2326                                   msecs_to_jiffies(1000));
2327
2328         if (err == -EINTR) {
2329                 bt_dev_err(hdev, "Device boot interrupted");
2330                 return -EINTR;
2331         }
2332
2333         if (err) {
2334                 bt_dev_err(hdev, "Device boot timeout");
2335                 return -ETIMEDOUT;
2336         }
2337
2338         rettime = ktime_get();
2339         delta = ktime_sub(rettime, calltime);
2340         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2341
2342         bt_dev_info(hdev, "Device booted in %llu usecs", duration);
2343
2344         clear_bit(BTUSB_BOOTLOADER, &data->flags);
2345
2346         /* Once the device is running in operational mode, it needs to apply
2347          * the device configuration (DDC) parameters.
2348          *
2349          * The device can work without DDC parameters, so even if it fails
2350          * to load the file, no need to fail the setup.
2351          */
2352         btintel_load_ddc_config(hdev, fwname);
2353
2354         /* Set the event mask for Intel specific vendor events. This enables
2355          * a few extra events that are useful during general operation. It
2356          * does not enable any debugging related events.
2357          *
2358          * The device will function correctly without these events enabled
2359          * and thus no need to fail the setup.
2360          */
2361         btintel_set_event_mask(hdev, false);
2362
2363         return 0;
2364 }
2365
2366 static int btusb_shutdown_intel(struct hci_dev *hdev)
2367 {
2368         struct sk_buff *skb;
2369         long ret;
2370
2371         /* In the shutdown sequence where Bluetooth is turned off followed
2372          * by WiFi being turned off, turning WiFi back on causes issue with
2373          * the RF calibration.
2374          *
2375          * To ensure that any RF activity has been stopped, issue HCI Reset
2376          * command to clear all ongoing activity including advertising,
2377          * scanning etc.
2378          */
2379         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2380         if (IS_ERR(skb)) {
2381                 ret = PTR_ERR(skb);
2382                 bt_dev_err(hdev, "HCI reset during shutdown failed");
2383                 return ret;
2384         }
2385         kfree_skb(skb);
2386
2387         /* Some platforms have an issue with BT LED when the interface is
2388          * down or BT radio is turned off, which takes 5 seconds to BT LED
2389          * goes off. This command turns off the BT LED immediately.
2390          */
2391         skb = __hci_cmd_sync(hdev, 0xfc3f, 0, NULL, HCI_INIT_TIMEOUT);
2392         if (IS_ERR(skb)) {
2393                 ret = PTR_ERR(skb);
2394                 bt_dev_err(hdev, "turning off Intel device LED failed");
2395                 return ret;
2396         }
2397         kfree_skb(skb);
2398
2399         return 0;
2400 }
2401
2402 #ifdef CONFIG_PM
2403 /* Configure an out-of-band gpio as wake-up pin, if specified in device tree */
2404 static int marvell_config_oob_wake(struct hci_dev *hdev)
2405 {
2406         struct sk_buff *skb;
2407         struct btusb_data *data = hci_get_drvdata(hdev);
2408         struct device *dev = &data->udev->dev;
2409         u16 pin, gap, opcode;
2410         int ret;
2411         u8 cmd[5];
2412
2413         /* Move on if no wakeup pin specified */
2414         if (of_property_read_u16(dev->of_node, "marvell,wakeup-pin", &pin) ||
2415             of_property_read_u16(dev->of_node, "marvell,wakeup-gap-ms", &gap))
2416                 return 0;
2417
2418         /* Vendor specific command to configure a GPIO as wake-up pin */
2419         opcode = hci_opcode_pack(0x3F, 0x59);
2420         cmd[0] = opcode & 0xFF;
2421         cmd[1] = opcode >> 8;
2422         cmd[2] = 2; /* length of parameters that follow */
2423         cmd[3] = pin;
2424         cmd[4] = gap; /* time in ms, for which wakeup pin should be asserted */
2425
2426         skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
2427         if (!skb) {
2428                 bt_dev_err(hdev, "%s: No memory\n", __func__);
2429                 return -ENOMEM;
2430         }
2431
2432         skb_put_data(skb, cmd, sizeof(cmd));
2433         hci_skb_pkt_type(skb) = HCI_COMMAND_PKT;
2434
2435         ret = btusb_send_frame(hdev, skb);
2436         if (ret) {
2437                 bt_dev_err(hdev, "%s: configuration failed\n", __func__);
2438                 kfree_skb(skb);
2439                 return ret;
2440         }
2441
2442         return 0;
2443 }
2444 #endif
2445
2446 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
2447                                     const bdaddr_t *bdaddr)
2448 {
2449         struct sk_buff *skb;
2450         u8 buf[8];
2451         long ret;
2452
2453         buf[0] = 0xfe;
2454         buf[1] = sizeof(bdaddr_t);
2455         memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
2456
2457         skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2458         if (IS_ERR(skb)) {
2459                 ret = PTR_ERR(skb);
2460                 bt_dev_err(hdev, "changing Marvell device address failed (%ld)",
2461                            ret);
2462                 return ret;
2463         }
2464         kfree_skb(skb);
2465
2466         return 0;
2467 }
2468
2469 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
2470                                     const bdaddr_t *bdaddr)
2471 {
2472         struct sk_buff *skb;
2473         u8 buf[10];
2474         long ret;
2475
2476         buf[0] = 0x01;
2477         buf[1] = 0x01;
2478         buf[2] = 0x00;
2479         buf[3] = sizeof(bdaddr_t);
2480         memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
2481
2482         skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2483         if (IS_ERR(skb)) {
2484                 ret = PTR_ERR(skb);
2485                 bt_dev_err(hdev, "Change address command failed (%ld)", ret);
2486                 return ret;
2487         }
2488         kfree_skb(skb);
2489
2490         return 0;
2491 }
2492
2493 #define QCA_DFU_PACKET_LEN      4096
2494
2495 #define QCA_GET_TARGET_VERSION  0x09
2496 #define QCA_CHECK_STATUS        0x05
2497 #define QCA_DFU_DOWNLOAD        0x01
2498
2499 #define QCA_SYSCFG_UPDATED      0x40
2500 #define QCA_PATCH_UPDATED       0x80
2501 #define QCA_DFU_TIMEOUT         3000
2502
2503 struct qca_version {
2504         __le32  rom_version;
2505         __le32  patch_version;
2506         __le32  ram_version;
2507         __le32  ref_clock;
2508         __u8    reserved[4];
2509 } __packed;
2510
2511 struct qca_rampatch_version {
2512         __le16  rom_version;
2513         __le16  patch_version;
2514 } __packed;
2515
2516 struct qca_device_info {
2517         u32     rom_version;
2518         u8      rampatch_hdr;   /* length of header in rampatch */
2519         u8      nvm_hdr;        /* length of header in NVM */
2520         u8      ver_offset;     /* offset of version structure in rampatch */
2521 };
2522
2523 static const struct qca_device_info qca_devices_table[] = {
2524         { 0x00000100, 20, 4, 10 }, /* Rome 1.0 */
2525         { 0x00000101, 20, 4, 10 }, /* Rome 1.1 */
2526         { 0x00000200, 28, 4, 18 }, /* Rome 2.0 */
2527         { 0x00000201, 28, 4, 18 }, /* Rome 2.1 */
2528         { 0x00000300, 28, 4, 18 }, /* Rome 3.0 */
2529         { 0x00000302, 28, 4, 18 }, /* Rome 3.2 */
2530 };
2531
2532 static int btusb_qca_send_vendor_req(struct usb_device *udev, u8 request,
2533                                      void *data, u16 size)
2534 {
2535         int pipe, err;
2536         u8 *buf;
2537
2538         buf = kmalloc(size, GFP_KERNEL);
2539         if (!buf)
2540                 return -ENOMEM;
2541
2542         /* Found some of USB hosts have IOT issues with ours so that we should
2543          * not wait until HCI layer is ready.
2544          */
2545         pipe = usb_rcvctrlpipe(udev, 0);
2546         err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
2547                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2548         if (err < 0) {
2549                 dev_err(&udev->dev, "Failed to access otp area (%d)", err);
2550                 goto done;
2551         }
2552
2553         memcpy(data, buf, size);
2554
2555 done:
2556         kfree(buf);
2557
2558         return err;
2559 }
2560
2561 static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
2562                                        const struct firmware *firmware,
2563                                        size_t hdr_size)
2564 {
2565         struct btusb_data *btdata = hci_get_drvdata(hdev);
2566         struct usb_device *udev = btdata->udev;
2567         size_t count, size, sent = 0;
2568         int pipe, len, err;
2569         u8 *buf;
2570
2571         buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
2572         if (!buf)
2573                 return -ENOMEM;
2574
2575         count = firmware->size;
2576
2577         size = min_t(size_t, count, hdr_size);
2578         memcpy(buf, firmware->data, size);
2579
2580         /* USB patches should go down to controller through USB path
2581          * because binary format fits to go down through USB channel.
2582          * USB control path is for patching headers and USB bulk is for
2583          * patch body.
2584          */
2585         pipe = usb_sndctrlpipe(udev, 0);
2586         err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
2587                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2588         if (err < 0) {
2589                 bt_dev_err(hdev, "Failed to send headers (%d)", err);
2590                 goto done;
2591         }
2592
2593         sent += size;
2594         count -= size;
2595
2596         while (count) {
2597                 size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
2598
2599                 memcpy(buf, firmware->data + sent, size);
2600
2601                 pipe = usb_sndbulkpipe(udev, 0x02);
2602                 err = usb_bulk_msg(udev, pipe, buf, size, &len,
2603                                    QCA_DFU_TIMEOUT);
2604                 if (err < 0) {
2605                         bt_dev_err(hdev, "Failed to send body at %zd of %zd (%d)",
2606                                    sent, firmware->size, err);
2607                         break;
2608                 }
2609
2610                 if (size != len) {
2611                         bt_dev_err(hdev, "Failed to get bulk buffer");
2612                         err = -EILSEQ;
2613                         break;
2614                 }
2615
2616                 sent  += size;
2617                 count -= size;
2618         }
2619
2620 done:
2621         kfree(buf);
2622         return err;
2623 }
2624
2625 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
2626                                          struct qca_version *ver,
2627                                          const struct qca_device_info *info)
2628 {
2629         struct qca_rampatch_version *rver;
2630         const struct firmware *fw;
2631         u32 ver_rom, ver_patch;
2632         u16 rver_rom, rver_patch;
2633         char fwname[64];
2634         int err;
2635
2636         ver_rom = le32_to_cpu(ver->rom_version);
2637         ver_patch = le32_to_cpu(ver->patch_version);
2638
2639         snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom);
2640
2641         err = request_firmware(&fw, fwname, &hdev->dev);
2642         if (err) {
2643                 bt_dev_err(hdev, "failed to request rampatch file: %s (%d)",
2644                            fwname, err);
2645                 return err;
2646         }
2647
2648         bt_dev_info(hdev, "using rampatch file: %s", fwname);
2649
2650         rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
2651         rver_rom = le16_to_cpu(rver->rom_version);
2652         rver_patch = le16_to_cpu(rver->patch_version);
2653
2654         bt_dev_info(hdev, "QCA: patch rome 0x%x build 0x%x, "
2655                     "firmware rome 0x%x build 0x%x",
2656                     rver_rom, rver_patch, ver_rom, ver_patch);
2657
2658         if (rver_rom != ver_rom || rver_patch <= ver_patch) {
2659                 bt_dev_err(hdev, "rampatch file version did not match with firmware");
2660                 err = -EINVAL;
2661                 goto done;
2662         }
2663
2664         err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
2665
2666 done:
2667         release_firmware(fw);
2668
2669         return err;
2670 }
2671
2672 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
2673                                     struct qca_version *ver,
2674                                     const struct qca_device_info *info)
2675 {
2676         const struct firmware *fw;
2677         char fwname[64];
2678         int err;
2679
2680         snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x.bin",
2681                  le32_to_cpu(ver->rom_version));
2682
2683         err = request_firmware(&fw, fwname, &hdev->dev);
2684         if (err) {
2685                 bt_dev_err(hdev, "failed to request NVM file: %s (%d)",
2686                            fwname, err);
2687                 return err;
2688         }
2689
2690         bt_dev_info(hdev, "using NVM file: %s", fwname);
2691
2692         err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
2693
2694         release_firmware(fw);
2695
2696         return err;
2697 }
2698
2699 /* identify the ROM version and check whether patches are needed */
2700 static bool btusb_qca_need_patch(struct usb_device *udev)
2701 {
2702         struct qca_version ver;
2703
2704         if (btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
2705                                       sizeof(ver)) < 0)
2706                 return false;
2707         /* only low ROM versions need patches */
2708         return !(le32_to_cpu(ver.rom_version) & ~0xffffU);
2709 }
2710
2711 static int btusb_setup_qca(struct hci_dev *hdev)
2712 {
2713         struct btusb_data *btdata = hci_get_drvdata(hdev);
2714         struct usb_device *udev = btdata->udev;
2715         const struct qca_device_info *info = NULL;
2716         struct qca_version ver;
2717         u32 ver_rom;
2718         u8 status;
2719         int i, err;
2720
2721         err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
2722                                         sizeof(ver));
2723         if (err < 0)
2724                 return err;
2725
2726         ver_rom = le32_to_cpu(ver.rom_version);
2727         /* Don't care about high ROM versions */
2728         if (ver_rom & ~0xffffU)
2729                 return 0;
2730
2731         for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
2732                 if (ver_rom == qca_devices_table[i].rom_version)
2733                         info = &qca_devices_table[i];
2734         }
2735         if (!info) {
2736                 bt_dev_err(hdev, "don't support firmware rome 0x%x", ver_rom);
2737                 return -ENODEV;
2738         }
2739
2740         err = btusb_qca_send_vendor_req(udev, QCA_CHECK_STATUS, &status,
2741                                         sizeof(status));
2742         if (err < 0)
2743                 return err;
2744
2745         if (!(status & QCA_PATCH_UPDATED)) {
2746                 err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
2747                 if (err < 0)
2748                         return err;
2749         }
2750
2751         if (!(status & QCA_SYSCFG_UPDATED)) {
2752                 err = btusb_setup_qca_load_nvm(hdev, &ver, info);
2753                 if (err < 0)
2754                         return err;
2755         }
2756
2757         return 0;
2758 }
2759
2760 #ifdef CONFIG_BT_HCIBTUSB_BCM
2761 static inline int __set_diag_interface(struct hci_dev *hdev)
2762 {
2763         struct btusb_data *data = hci_get_drvdata(hdev);
2764         struct usb_interface *intf = data->diag;
2765         int i;
2766
2767         if (!data->diag)
2768                 return -ENODEV;
2769
2770         data->diag_tx_ep = NULL;
2771         data->diag_rx_ep = NULL;
2772
2773         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2774                 struct usb_endpoint_descriptor *ep_desc;
2775
2776                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2777
2778                 if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
2779                         data->diag_tx_ep = ep_desc;
2780                         continue;
2781                 }
2782
2783                 if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
2784                         data->diag_rx_ep = ep_desc;
2785                         continue;
2786                 }
2787         }
2788
2789         if (!data->diag_tx_ep || !data->diag_rx_ep) {
2790                 bt_dev_err(hdev, "invalid diagnostic descriptors");
2791                 return -ENODEV;
2792         }
2793
2794         return 0;
2795 }
2796
2797 static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable)
2798 {
2799         struct btusb_data *data = hci_get_drvdata(hdev);
2800         struct sk_buff *skb;
2801         struct urb *urb;
2802         unsigned int pipe;
2803
2804         if (!data->diag_tx_ep)
2805                 return ERR_PTR(-ENODEV);
2806
2807         urb = usb_alloc_urb(0, GFP_KERNEL);
2808         if (!urb)
2809                 return ERR_PTR(-ENOMEM);
2810
2811         skb = bt_skb_alloc(2, GFP_KERNEL);
2812         if (!skb) {
2813                 usb_free_urb(urb);
2814                 return ERR_PTR(-ENOMEM);
2815         }
2816
2817         skb_put_u8(skb, 0xf0);
2818         skb_put_u8(skb, enable);
2819
2820         pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress);
2821
2822         usb_fill_bulk_urb(urb, data->udev, pipe,
2823                           skb->data, skb->len, btusb_tx_complete, skb);
2824
2825         skb->dev = (void *)hdev;
2826
2827         return urb;
2828 }
2829
2830 static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable)
2831 {
2832         struct btusb_data *data = hci_get_drvdata(hdev);
2833         struct urb *urb;
2834
2835         if (!data->diag)
2836                 return -ENODEV;
2837
2838         if (!test_bit(HCI_RUNNING, &hdev->flags))
2839                 return -ENETDOWN;
2840
2841         urb = alloc_diag_urb(hdev, enable);
2842         if (IS_ERR(urb))
2843                 return PTR_ERR(urb);
2844
2845         return submit_or_queue_tx_urb(hdev, urb);
2846 }
2847 #endif
2848
2849 #ifdef CONFIG_PM
2850 static irqreturn_t btusb_oob_wake_handler(int irq, void *priv)
2851 {
2852         struct btusb_data *data = priv;
2853
2854         pm_wakeup_event(&data->udev->dev, 0);
2855         pm_system_wakeup();
2856
2857         /* Disable only if not already disabled (keep it balanced) */
2858         if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
2859                 disable_irq_nosync(irq);
2860                 disable_irq_wake(irq);
2861         }
2862         return IRQ_HANDLED;
2863 }
2864
2865 static const struct of_device_id btusb_match_table[] = {
2866         { .compatible = "usb1286,204e" },
2867         { }
2868 };
2869 MODULE_DEVICE_TABLE(of, btusb_match_table);
2870
2871 /* Use an oob wakeup pin? */
2872 static int btusb_config_oob_wake(struct hci_dev *hdev)
2873 {
2874         struct btusb_data *data = hci_get_drvdata(hdev);
2875         struct device *dev = &data->udev->dev;
2876         int irq, ret;
2877
2878         clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
2879
2880         if (!of_match_device(btusb_match_table, dev))
2881                 return 0;
2882
2883         /* Move on if no IRQ specified */
2884         irq = of_irq_get_byname(dev->of_node, "wakeup");
2885         if (irq <= 0) {
2886                 bt_dev_dbg(hdev, "%s: no OOB Wakeup IRQ in DT", __func__);
2887                 return 0;
2888         }
2889
2890         ret = devm_request_irq(&hdev->dev, irq, btusb_oob_wake_handler,
2891                                0, "OOB Wake-on-BT", data);
2892         if (ret) {
2893                 bt_dev_err(hdev, "%s: IRQ request failed", __func__);
2894                 return ret;
2895         }
2896
2897         ret = device_init_wakeup(dev, true);
2898         if (ret) {
2899                 bt_dev_err(hdev, "%s: failed to init_wakeup", __func__);
2900                 return ret;
2901         }
2902
2903         data->oob_wake_irq = irq;
2904         disable_irq(irq);
2905         bt_dev_info(hdev, "OOB Wake-on-BT configured at IRQ %u", irq);
2906         return 0;
2907 }
2908 #endif
2909
2910 static void btusb_check_needs_reset_resume(struct usb_interface *intf)
2911 {
2912         if (dmi_check_system(btusb_needs_reset_resume_table))
2913                 interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME;
2914 }
2915
2916 static int btusb_probe(struct usb_interface *intf,
2917                        const struct usb_device_id *id)
2918 {
2919         struct usb_endpoint_descriptor *ep_desc;
2920         struct btusb_data *data;
2921         struct hci_dev *hdev;
2922         unsigned ifnum_base;
2923         int i, err;
2924
2925         BT_DBG("intf %p id %p", intf, id);
2926
2927         /* interface numbers are hardcoded in the spec */
2928         if (intf->cur_altsetting->desc.bInterfaceNumber != 0) {
2929                 if (!(id->driver_info & BTUSB_IFNUM_2))
2930                         return -ENODEV;
2931                 if (intf->cur_altsetting->desc.bInterfaceNumber != 2)
2932                         return -ENODEV;
2933         }
2934
2935         ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber;
2936
2937         if (!id->driver_info) {
2938                 const struct usb_device_id *match;
2939
2940                 match = usb_match_id(intf, blacklist_table);
2941                 if (match)
2942                         id = match;
2943         }
2944
2945         if (id->driver_info == BTUSB_IGNORE)
2946                 return -ENODEV;
2947
2948         if (id->driver_info & BTUSB_ATH3012) {
2949                 struct usb_device *udev = interface_to_usbdev(intf);
2950
2951                 /* Old firmware would otherwise let ath3k driver load
2952                  * patch and sysconfig files
2953                  */
2954                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001 &&
2955                     !btusb_qca_need_patch(udev))
2956                         return -ENODEV;
2957         }
2958
2959         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
2960         if (!data)
2961                 return -ENOMEM;
2962
2963         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2964                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2965
2966                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
2967                         data->intr_ep = ep_desc;
2968                         continue;
2969                 }
2970
2971                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
2972                         data->bulk_tx_ep = ep_desc;
2973                         continue;
2974                 }
2975
2976                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
2977                         data->bulk_rx_ep = ep_desc;
2978                         continue;
2979                 }
2980         }
2981
2982         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
2983                 return -ENODEV;
2984
2985         if (id->driver_info & BTUSB_AMP) {
2986                 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
2987                 data->cmdreq = 0x2b;
2988         } else {
2989                 data->cmdreq_type = USB_TYPE_CLASS;
2990                 data->cmdreq = 0x00;
2991         }
2992
2993         data->udev = interface_to_usbdev(intf);
2994         data->intf = intf;
2995
2996         INIT_WORK(&data->work, btusb_work);
2997         INIT_WORK(&data->waker, btusb_waker);
2998         init_usb_anchor(&data->deferred);
2999         init_usb_anchor(&data->tx_anchor);
3000         spin_lock_init(&data->txlock);
3001
3002         init_usb_anchor(&data->intr_anchor);
3003         init_usb_anchor(&data->bulk_anchor);
3004         init_usb_anchor(&data->isoc_anchor);
3005         init_usb_anchor(&data->diag_anchor);
3006         spin_lock_init(&data->rxlock);
3007
3008         if (id->driver_info & BTUSB_INTEL_NEW) {
3009                 data->recv_event = btusb_recv_event_intel;
3010                 data->recv_bulk = btusb_recv_bulk_intel;
3011                 set_bit(BTUSB_BOOTLOADER, &data->flags);
3012         } else {
3013                 data->recv_event = hci_recv_frame;
3014                 data->recv_bulk = btusb_recv_bulk;
3015         }
3016
3017         hdev = hci_alloc_dev();
3018         if (!hdev)
3019                 return -ENOMEM;
3020
3021         hdev->bus = HCI_USB;
3022         hci_set_drvdata(hdev, data);
3023
3024         if (id->driver_info & BTUSB_AMP)
3025                 hdev->dev_type = HCI_AMP;
3026         else
3027                 hdev->dev_type = HCI_PRIMARY;
3028
3029         data->hdev = hdev;
3030
3031         SET_HCIDEV_DEV(hdev, &intf->dev);
3032
3033         hdev->open   = btusb_open;
3034         hdev->close  = btusb_close;
3035         hdev->flush  = btusb_flush;
3036         hdev->send   = btusb_send_frame;
3037         hdev->notify = btusb_notify;
3038
3039 #ifdef CONFIG_PM
3040         err = btusb_config_oob_wake(hdev);
3041         if (err)
3042                 goto out_free_dev;
3043
3044         /* Marvell devices may need a specific chip configuration */
3045         if (id->driver_info & BTUSB_MARVELL && data->oob_wake_irq) {
3046                 err = marvell_config_oob_wake(hdev);
3047                 if (err)
3048                         goto out_free_dev;
3049         }
3050 #endif
3051         if (id->driver_info & BTUSB_CW6622)
3052                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
3053
3054         if (id->driver_info & BTUSB_BCM2045)
3055                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
3056
3057         if (id->driver_info & BTUSB_BCM92035)
3058                 hdev->setup = btusb_setup_bcm92035;
3059
3060 #ifdef CONFIG_BT_HCIBTUSB_BCM
3061         if (id->driver_info & BTUSB_BCM_PATCHRAM) {
3062                 hdev->manufacturer = 15;
3063                 hdev->setup = btbcm_setup_patchram;
3064                 hdev->set_diag = btusb_bcm_set_diag;
3065                 hdev->set_bdaddr = btbcm_set_bdaddr;
3066
3067                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
3068                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
3069         }
3070
3071         if (id->driver_info & BTUSB_BCM_APPLE) {
3072                 hdev->manufacturer = 15;
3073                 hdev->setup = btbcm_setup_apple;
3074                 hdev->set_diag = btusb_bcm_set_diag;
3075
3076                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
3077                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
3078         }
3079 #endif
3080
3081         if (id->driver_info & BTUSB_INTEL) {
3082                 hdev->manufacturer = 2;
3083                 hdev->setup = btusb_setup_intel;
3084                 hdev->shutdown = btusb_shutdown_intel;
3085                 hdev->set_diag = btintel_set_diag_mfg;
3086                 hdev->set_bdaddr = btintel_set_bdaddr;
3087                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3088                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3089                 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
3090         }
3091
3092         if (id->driver_info & BTUSB_INTEL_NEW) {
3093                 hdev->manufacturer = 2;
3094                 hdev->send = btusb_send_frame_intel;
3095                 hdev->setup = btusb_setup_intel_new;
3096                 hdev->hw_error = btintel_hw_error;
3097                 hdev->set_diag = btintel_set_diag;
3098                 hdev->set_bdaddr = btintel_set_bdaddr;
3099                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3100                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3101                 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
3102         }
3103
3104         if (id->driver_info & BTUSB_MARVELL)
3105                 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
3106
3107         if (id->driver_info & BTUSB_SWAVE) {
3108                 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
3109                 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
3110         }
3111
3112         if (id->driver_info & BTUSB_INTEL_BOOT) {
3113                 hdev->manufacturer = 2;
3114                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3115         }
3116
3117         if (id->driver_info & BTUSB_ATH3012) {
3118                 data->setup_on_usb = btusb_setup_qca;
3119                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
3120                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3121                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3122         }
3123
3124         if (id->driver_info & BTUSB_QCA_ROME) {
3125                 data->setup_on_usb = btusb_setup_qca;
3126                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
3127                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3128                 btusb_check_needs_reset_resume(intf);
3129         }
3130
3131 #ifdef CONFIG_BT_HCIBTUSB_RTL
3132         if (id->driver_info & BTUSB_REALTEK) {
3133                 hdev->setup = btrtl_setup_realtek;
3134
3135                 /* Realtek devices lose their updated firmware over suspend,
3136                  * but the USB hub doesn't notice any status change.
3137                  * Explicitly request a device reset on resume.
3138                  */
3139                 interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME;
3140         }
3141 #endif
3142
3143         if (id->driver_info & BTUSB_AMP) {
3144                 /* AMP controllers do not support SCO packets */
3145                 data->isoc = NULL;
3146         } else {
3147                 /* Interface orders are hardcoded in the specification */
3148                 data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1);
3149                 data->isoc_ifnum = ifnum_base + 1;
3150         }
3151
3152         if (!reset)
3153                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3154
3155         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
3156                 if (!disable_scofix)
3157                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
3158         }
3159
3160         if (id->driver_info & BTUSB_BROKEN_ISOC)
3161                 data->isoc = NULL;
3162
3163         if (id->driver_info & BTUSB_DIGIANSWER) {
3164                 data->cmdreq_type = USB_TYPE_VENDOR;
3165                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3166         }
3167
3168         if (id->driver_info & BTUSB_CSR) {
3169                 struct usb_device *udev = data->udev;
3170                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
3171
3172                 /* Old firmware would otherwise execute USB reset */
3173                 if (bcdDevice < 0x117)
3174                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3175
3176                 /* Fake CSR devices with broken commands */
3177                 if (bcdDevice <= 0x100 || bcdDevice == 0x134)
3178                         hdev->setup = btusb_setup_csr;
3179
3180                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3181         }
3182
3183         if (id->driver_info & BTUSB_SNIFFER) {
3184                 struct usb_device *udev = data->udev;
3185
3186                 /* New sniffer firmware has crippled HCI interface */
3187                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
3188                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3189         }
3190
3191         if (id->driver_info & BTUSB_INTEL_BOOT) {
3192                 /* A bug in the bootloader causes that interrupt interface is
3193                  * only enabled after receiving SetInterface(0, AltSetting=0).
3194                  */
3195                 err = usb_set_interface(data->udev, 0, 0);
3196                 if (err < 0) {
3197                         BT_ERR("failed to set interface 0, alt 0 %d", err);
3198                         goto out_free_dev;
3199                 }
3200         }
3201
3202         if (data->isoc) {
3203                 err = usb_driver_claim_interface(&btusb_driver,
3204                                                  data->isoc, data);
3205                 if (err < 0)
3206                         goto out_free_dev;
3207         }
3208
3209 #ifdef CONFIG_BT_HCIBTUSB_BCM
3210         if (data->diag) {
3211                 if (!usb_driver_claim_interface(&btusb_driver,
3212                                                 data->diag, data))
3213                         __set_diag_interface(hdev);
3214                 else
3215                         data->diag = NULL;
3216         }
3217 #endif
3218
3219         if (enable_autosuspend)
3220                 usb_enable_autosuspend(data->udev);
3221
3222         err = hci_register_dev(hdev);
3223         if (err < 0)
3224                 goto out_free_dev;
3225
3226         usb_set_intfdata(intf, data);
3227
3228         return 0;
3229
3230 out_free_dev:
3231         hci_free_dev(hdev);
3232         return err;
3233 }
3234
3235 static void btusb_disconnect(struct usb_interface *intf)
3236 {
3237         struct btusb_data *data = usb_get_intfdata(intf);
3238         struct hci_dev *hdev;
3239
3240         BT_DBG("intf %p", intf);
3241
3242         if (!data)
3243                 return;
3244
3245         hdev = data->hdev;
3246         usb_set_intfdata(data->intf, NULL);
3247
3248         if (data->isoc)
3249                 usb_set_intfdata(data->isoc, NULL);
3250
3251         if (data->diag)
3252                 usb_set_intfdata(data->diag, NULL);
3253
3254         hci_unregister_dev(hdev);
3255
3256         if (intf == data->intf) {
3257                 if (data->isoc)
3258                         usb_driver_release_interface(&btusb_driver, data->isoc);
3259                 if (data->diag)
3260                         usb_driver_release_interface(&btusb_driver, data->diag);
3261         } else if (intf == data->isoc) {
3262                 if (data->diag)
3263                         usb_driver_release_interface(&btusb_driver, data->diag);
3264                 usb_driver_release_interface(&btusb_driver, data->intf);
3265         } else if (intf == data->diag) {
3266                 usb_driver_release_interface(&btusb_driver, data->intf);
3267                 if (data->isoc)
3268                         usb_driver_release_interface(&btusb_driver, data->isoc);
3269         }
3270
3271         if (data->oob_wake_irq)
3272                 device_init_wakeup(&data->udev->dev, false);
3273
3274         hci_free_dev(hdev);
3275 }
3276
3277 #ifdef CONFIG_PM
3278 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
3279 {
3280         struct btusb_data *data = usb_get_intfdata(intf);
3281
3282         BT_DBG("intf %p", intf);
3283
3284         if (data->suspend_count++)
3285                 return 0;
3286
3287         spin_lock_irq(&data->txlock);
3288         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
3289                 set_bit(BTUSB_SUSPENDING, &data->flags);
3290                 spin_unlock_irq(&data->txlock);
3291         } else {
3292                 spin_unlock_irq(&data->txlock);
3293                 data->suspend_count--;
3294                 return -EBUSY;
3295         }
3296
3297         cancel_work_sync(&data->work);
3298
3299         btusb_stop_traffic(data);
3300         usb_kill_anchored_urbs(&data->tx_anchor);
3301
3302         if (data->oob_wake_irq && device_may_wakeup(&data->udev->dev)) {
3303                 set_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
3304                 enable_irq_wake(data->oob_wake_irq);
3305                 enable_irq(data->oob_wake_irq);
3306         }
3307
3308         return 0;
3309 }
3310
3311 static void play_deferred(struct btusb_data *data)
3312 {
3313         struct urb *urb;
3314         int err;
3315
3316         while ((urb = usb_get_from_anchor(&data->deferred))) {
3317                 usb_anchor_urb(urb, &data->tx_anchor);
3318
3319                 err = usb_submit_urb(urb, GFP_ATOMIC);
3320                 if (err < 0) {
3321                         if (err != -EPERM && err != -ENODEV)
3322                                 BT_ERR("%s urb %p submission failed (%d)",
3323                                        data->hdev->name, urb, -err);
3324                         kfree(urb->setup_packet);
3325                         usb_unanchor_urb(urb);
3326                         usb_free_urb(urb);
3327                         break;
3328                 }
3329
3330                 data->tx_in_flight++;
3331                 usb_free_urb(urb);
3332         }
3333
3334         /* Cleanup the rest deferred urbs. */
3335         while ((urb = usb_get_from_anchor(&data->deferred))) {
3336                 kfree(urb->setup_packet);
3337                 usb_free_urb(urb);
3338         }
3339 }
3340
3341 static int btusb_resume(struct usb_interface *intf)
3342 {
3343         struct btusb_data *data = usb_get_intfdata(intf);
3344         struct hci_dev *hdev = data->hdev;
3345         int err = 0;
3346
3347         BT_DBG("intf %p", intf);
3348
3349         if (--data->suspend_count)
3350                 return 0;
3351
3352         /* Disable only if not already disabled (keep it balanced) */
3353         if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
3354                 disable_irq(data->oob_wake_irq);
3355                 disable_irq_wake(data->oob_wake_irq);
3356         }
3357
3358         if (!test_bit(HCI_RUNNING, &hdev->flags))
3359                 goto done;
3360
3361         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
3362                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
3363                 if (err < 0) {
3364                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
3365                         goto failed;
3366                 }
3367         }
3368
3369         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
3370                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
3371                 if (err < 0) {
3372                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
3373                         goto failed;
3374                 }
3375
3376                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
3377         }
3378
3379         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
3380                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
3381                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
3382                 else
3383                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
3384         }
3385
3386         spin_lock_irq(&data->txlock);
3387         play_deferred(data);
3388         clear_bit(BTUSB_SUSPENDING, &data->flags);
3389         spin_unlock_irq(&data->txlock);
3390         schedule_work(&data->work);
3391
3392         return 0;
3393
3394 failed:
3395         usb_scuttle_anchored_urbs(&data->deferred);
3396 done:
3397         spin_lock_irq(&data->txlock);
3398         clear_bit(BTUSB_SUSPENDING, &data->flags);
3399         spin_unlock_irq(&data->txlock);
3400
3401         return err;
3402 }
3403 #endif
3404
3405 static struct usb_driver btusb_driver = {
3406         .name           = "btusb",
3407         .probe          = btusb_probe,
3408         .disconnect     = btusb_disconnect,
3409 #ifdef CONFIG_PM
3410         .suspend        = btusb_suspend,
3411         .resume         = btusb_resume,
3412 #endif
3413         .id_table       = btusb_table,
3414         .supports_autosuspend = 1,
3415         .disable_hub_initiated_lpm = 1,
3416 };
3417
3418 module_usb_driver(btusb_driver);
3419
3420 module_param(disable_scofix, bool, 0644);
3421 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
3422
3423 module_param(force_scofix, bool, 0644);
3424 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
3425
3426 module_param(enable_autosuspend, bool, 0644);
3427 MODULE_PARM_DESC(enable_autosuspend, "Enable USB autosuspend by default");
3428
3429 module_param(reset, bool, 0644);
3430 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
3431
3432 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
3433 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
3434 MODULE_VERSION(VERSION);
3435 MODULE_LICENSE("GPL");