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, 0xe007), .driver_info = BTUSB_QCA_ROME },
 268         { USB_DEVICE(0x0cf3, 0xe009), .driver_info = BTUSB_QCA_ROME },
 269         { USB_DEVICE(0x0cf3, 0xe010), .driver_info = BTUSB_QCA_ROME },
 270         { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME },
 271         { USB_DEVICE(0x0cf3, 0xe301), .driver_info = BTUSB_QCA_ROME },
 272         { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME },
 273         { USB_DEVICE(0x0489, 0xe092), .driver_info = BTUSB_QCA_ROME },
 274         { USB_DEVICE(0x0489, 0xe09f), .driver_info = BTUSB_QCA_ROME },
 275         { USB_DEVICE(0x0489, 0xe0a2), .driver_info = BTUSB_QCA_ROME },
 276         { USB_DEVICE(0x04ca, 0x3011), .driver_info = BTUSB_QCA_ROME },
 277         { USB_DEVICE(0x04ca, 0x3015), .driver_info = BTUSB_QCA_ROME },
 278         { USB_DEVICE(0x04ca, 0x3016), .driver_info = BTUSB_QCA_ROME },
 279         { USB_DEVICE(0x04ca, 0x301a), .driver_info = BTUSB_QCA_ROME },
 280         { USB_DEVICE(0x13d3, 0x3491), .driver_info = BTUSB_QCA_ROME },
 281         { USB_DEVICE(0x13d3, 0x3496), .driver_info = BTUSB_QCA_ROME },
 282         { USB_DEVICE(0x13d3, 0x3501), .driver_info = BTUSB_QCA_ROME },
 283
 284         /* Broadcom BCM2035 */
 285         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 286         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 287         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 288
 289         /* Broadcom BCM2045 */
 290         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 291         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 292
 293         /* IBM/Lenovo ThinkPad with Broadcom chip */
 294         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 295         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 296
 297         /* HP laptop with Broadcom chip */
 298         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 299
 300         /* Dell laptop with Broadcom chip */
 301         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 302
 303         /* Dell Wireless 370 and 410 devices */
 304         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 305         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 306
 307         /* Belkin F8T012 and F8T013 devices */
 308         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 309         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 310
 311         /* Asus WL-BTD202 device */
 312         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 313
 314         /* Kensington Bluetooth USB adapter */
 315         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 316
 317         /* RTX Telecom based adapters with buggy SCO support */
 318         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 319         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 320
 321         /* CONWISE Technology based adapters with buggy SCO support */
 322         { USB_DEVICE(0x0e5e, 0x6622),
 323           .driver_info = BTUSB_BROKEN_ISOC | BTUSB_CW6622},
 324
 325         /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
 326         { USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE },
 327
 328         /* Digianswer devices */
 329         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 330         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 331
 332         /* CSR BlueCore Bluetooth Sniffer */
 333         { USB_DEVICE(0x0a12, 0x0002),
 334           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 335
 336         /* Frontline ComProbe Bluetooth Sniffer */
 337         { USB_DEVICE(0x16d3, 0x0002),
 338           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 339
 340         /* Marvell Bluetooth devices */
 341         { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
 342         { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
 343         { USB_DEVICE(0x1286, 0x204e), .driver_info = BTUSB_MARVELL },
 344
 345         /* Intel Bluetooth devices */
 346         { USB_DEVICE(0x8087, 0x0025), .driver_info = BTUSB_INTEL_NEW },
 347         { USB_DEVICE(0x8087, 0x0026), .driver_info = BTUSB_INTEL_NEW },
 348         { USB_DEVICE(0x8087, 0x0029), .driver_info = BTUSB_INTEL_NEW },
 349         { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR },
 350         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 351         { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
 352         { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_NEW },
 353         { USB_DEVICE(0x8087, 0x0aa7), .driver_info = BTUSB_INTEL },
 354         { USB_DEVICE(0x8087, 0x0aaa), .driver_info = BTUSB_INTEL_NEW },
 355
 356         /* Other Intel Bluetooth devices */
 357         { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01),
 358           .driver_info = BTUSB_IGNORE },
 359
 360         /* Realtek Bluetooth devices */
 361         { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01),
 362           .driver_info = BTUSB_REALTEK },
 363
 364         /* Additional Realtek 8723AE Bluetooth devices */
 365         { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK },
 366         { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK },
 367
 368         /* Additional Realtek 8723BE Bluetooth devices */
 369         { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK },
 370         { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK },
 371         { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
 372         { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
 373         { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },
 374         { USB_DEVICE(0x13d3, 0x3494), .driver_info = BTUSB_REALTEK },
 375
 376         /* Additional Realtek 8723BU Bluetooth devices */
 377         { USB_DEVICE(0x7392, 0xa611), .driver_info = BTUSB_REALTEK },
 378
 379         /* Additional Realtek 8723DE Bluetooth devices */
 380         { USB_DEVICE(0x0bda, 0xb009), .driver_info = BTUSB_REALTEK },
 381         { USB_DEVICE(0x2ff8, 0xb011), .driver_info = BTUSB_REALTEK },
 382
 383         /* Additional Realtek 8821AE Bluetooth devices */
 384         { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
 385         { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },
 386         { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK },
 387         { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK },
 388         { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK },
 389
 390         /* Additional Realtek 8822BE Bluetooth devices */
 391         { USB_DEVICE(0x13d3, 0x3526), .driver_info = BTUSB_REALTEK },
 392         { USB_DEVICE(0x0b05, 0x185c), .driver_info = BTUSB_REALTEK },
 393
 394         /* Additional Realtek 8822CE Bluetooth devices */
 395         { USB_DEVICE(0x04ca, 0x4005), .driver_info = BTUSB_REALTEK },
 396
 397         /* Silicon Wave based devices */
 398         { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE },
 399
 400         { }     /* Terminating entry */
 401 };
 402
 403 /* The Bluetooth USB module build into some devices needs to be reset on resume,
 404  * this is a problem with the platform (likely shutting off all power) not with
 405  * the module itself. So we use a DMI list to match known broken platforms.
 406  */
 407 static const struct dmi_system_id btusb_needs_reset_resume_table[] = {
 408         {
 409                 /* Dell OptiPlex 3060 (QCA ROME device 0cf3:e007) */
 410                 .matches = {
 411                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 412                         DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 3060"),
 413                 },
 414         },
 415         {
 416                 /* Dell XPS 9360 (QCA ROME device 0cf3:e300) */
 417                 .matches = {
 418                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 419                         DMI_MATCH(DMI_PRODUCT_NAME, "XPS 13 9360"),
 420                 },
 421         },
 422         {
 423                 /* Dell Inspiron 5565 (QCA ROME device 0cf3:e009) */
 424                 .matches = {
 425                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 426                         DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5565"),
 427                 },
 428         },
 429         {}
 430 };
 431
 432 #define BTUSB_MAX_ISOC_FRAMES   10
 433
 434 #define BTUSB_INTR_RUNNING      0
 435 #define BTUSB_BULK_RUNNING      1
 436 #define BTUSB_ISOC_RUNNING      2
 437 #define BTUSB_SUSPENDING        3
 438 #define BTUSB_DID_ISO_RESUME    4
 439 #define BTUSB_BOOTLOADER        5
 440 #define BTUSB_DOWNLOADING       6
 441 #define BTUSB_FIRMWARE_LOADED   7
 442 #define BTUSB_FIRMWARE_FAILED   8
 443 #define BTUSB_BOOTING           9
 444 #define BTUSB_DIAG_RUNNING      10
 445 #define BTUSB_OOB_WAKE_ENABLED  11
 446
 447 struct btusb_data {
 448         struct hci_dev       *hdev;
 449         struct usb_device    *udev;
 450         struct usb_interface *intf;
 451         struct usb_interface *isoc;
 452         struct usb_interface *diag;
 453         unsigned isoc_ifnum;
 454
 455         unsigned long flags;
 456
 457         struct work_struct work;
 458         struct work_struct waker;
 459
 460         struct usb_anchor deferred;
 461         struct usb_anchor tx_anchor;
 462         int tx_in_flight;
 463         spinlock_t txlock;
 464
 465         struct usb_anchor intr_anchor;
 466         struct usb_anchor bulk_anchor;
 467         struct usb_anchor isoc_anchor;
 468         struct usb_anchor diag_anchor;
 469         spinlock_t rxlock;
 470
 471         struct sk_buff *evt_skb;
 472         struct sk_buff *acl_skb;
 473         struct sk_buff *sco_skb;
 474
 475         struct usb_endpoint_descriptor *intr_ep;
 476         struct usb_endpoint_descriptor *bulk_tx_ep;
 477         struct usb_endpoint_descriptor *bulk_rx_ep;
 478         struct usb_endpoint_descriptor *isoc_tx_ep;
 479         struct usb_endpoint_descriptor *isoc_rx_ep;
 480         struct usb_endpoint_descriptor *diag_tx_ep;
 481         struct usb_endpoint_descriptor *diag_rx_ep;
 482
 483         __u8 cmdreq_type;
 484         __u8 cmdreq;
 485
 486         unsigned int sco_num;
 487         int isoc_altsetting;
 488         int suspend_count;
 489
 490         int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
 491         int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
 492
 493         int (*setup_on_usb)(struct hci_dev *hdev);
 494
 495         int oob_wake_irq;   /* irq for out-of-band wake-on-bt */
 496 };
 497
 498 static inline void btusb_free_frags(struct btusb_data *data)
 499 {
 500         unsigned long flags;
 501
 502         spin_lock_irqsave(&data->rxlock, flags);
 503
 504         dev_kfree_skb_irq(data->evt_skb);
 505         data->evt_skb = NULL;
 506
 507         dev_kfree_skb_irq(data->acl_skb);
 508         data->acl_skb = NULL;
 509
 510         dev_kfree_skb_irq(data->sco_skb);
 511         data->sco_skb = NULL;
 512
 513         spin_unlock_irqrestore(&data->rxlock, flags);
 514 }
 515
 516 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
 517 {
 518         struct sk_buff *skb;
 519         unsigned long flags;
 520         int err = 0;
 521
 522         spin_lock_irqsave(&data->rxlock, flags);
 523         skb = data->evt_skb;
 524
 525         while (count) {
 526                 int len;
 527
 528                 if (!skb) {
 529                         skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
 530                         if (!skb) {
 531                                 err = -ENOMEM;
 532                                 break;
 533                         }
 534
 535                         hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
 536                         hci_skb_expect(skb) = HCI_EVENT_HDR_SIZE;
 537                 }
 538
 539                 len = min_t(uint, hci_skb_expect(skb), count);
 540                 skb_put_data(skb, buffer, len);
 541
 542                 count -= len;
 543                 buffer += len;
 544                 hci_skb_expect(skb) -= len;
 545
 546                 if (skb->len == HCI_EVENT_HDR_SIZE) {
 547                         /* Complete event header */
 548                         hci_skb_expect(skb) = hci_event_hdr(skb)->plen;
 549
 550                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 551                                 kfree_skb(skb);
 552                                 skb = NULL;
 553
 554                                 err = -EILSEQ;
 555                                 break;
 556                         }
 557                 }
 558
 559                 if (!hci_skb_expect(skb)) {
 560                         /* Complete frame */
 561                         data->recv_event(data->hdev, skb);
 562                         skb = NULL;
 563                 }
 564         }
 565
 566         data->evt_skb = skb;
 567         spin_unlock_irqrestore(&data->rxlock, flags);
 568
 569         return err;
 570 }
 571
 572 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
 573 {
 574         struct sk_buff *skb;
 575         unsigned long flags;
 576         int err = 0;
 577
 578         spin_lock_irqsave(&data->rxlock, flags);
 579         skb = data->acl_skb;
 580
 581         while (count) {
 582                 int len;
 583
 584                 if (!skb) {
 585                         skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
 586                         if (!skb) {
 587                                 err = -ENOMEM;
 588                                 break;
 589                         }
 590
 591                         hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT;
 592                         hci_skb_expect(skb) = HCI_ACL_HDR_SIZE;
 593                 }
 594
 595                 len = min_t(uint, hci_skb_expect(skb), count);
 596                 skb_put_data(skb, buffer, len);
 597
 598                 count -= len;
 599                 buffer += len;
 600                 hci_skb_expect(skb) -= len;
 601
 602                 if (skb->len == HCI_ACL_HDR_SIZE) {
 603                         __le16 dlen = hci_acl_hdr(skb)->dlen;
 604
 605                         /* Complete ACL header */
 606                         hci_skb_expect(skb) = __le16_to_cpu(dlen);
 607
 608                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 609                                 kfree_skb(skb);
 610                                 skb = NULL;
 611
 612                                 err = -EILSEQ;
 613                                 break;
 614                         }
 615                 }
 616
 617                 if (!hci_skb_expect(skb)) {
 618                         /* Complete frame */
 619                         hci_recv_frame(data->hdev, skb);
 620                         skb = NULL;
 621                 }
 622         }
 623
 624         data->acl_skb = skb;
 625         spin_unlock_irqrestore(&data->rxlock, flags);
 626
 627         return err;
 628 }
 629
 630 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
 631 {
 632         struct sk_buff *skb;
 633         unsigned long flags;
 634         int err = 0;
 635
 636         spin_lock_irqsave(&data->rxlock, flags);
 637         skb = data->sco_skb;
 638
 639         while (count) {
 640                 int len;
 641
 642                 if (!skb) {
 643                         skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
 644                         if (!skb) {
 645                                 err = -ENOMEM;
 646                                 break;
 647                         }
 648
 649                         hci_skb_pkt_type(skb) = HCI_SCODATA_PKT;
 650                         hci_skb_expect(skb) = HCI_SCO_HDR_SIZE;
 651                 }
 652
 653                 len = min_t(uint, hci_skb_expect(skb), count);
 654                 skb_put_data(skb, buffer, len);
 655
 656                 count -= len;
 657                 buffer += len;
 658                 hci_skb_expect(skb) -= len;
 659
 660                 if (skb->len == HCI_SCO_HDR_SIZE) {
 661                         /* Complete SCO header */
 662                         hci_skb_expect(skb) = hci_sco_hdr(skb)->dlen;
 663
 664                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 665                                 kfree_skb(skb);
 666                                 skb = NULL;
 667
 668                                 err = -EILSEQ;
 669                                 break;
 670                         }
 671                 }
 672
 673                 if (!hci_skb_expect(skb)) {
 674                         /* Complete frame */
 675                         hci_recv_frame(data->hdev, skb);
 676                         skb = NULL;
 677                 }
 678         }
 679
 680         data->sco_skb = skb;
 681         spin_unlock_irqrestore(&data->rxlock, flags);
 682
 683         return err;
 684 }
 685
 686 static void btusb_intr_complete(struct urb *urb)
 687 {
 688         struct hci_dev *hdev = urb->context;
 689         struct btusb_data *data = hci_get_drvdata(hdev);
 690         int err;
 691
 692         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 693                urb->actual_length);
 694
 695         if (!test_bit(HCI_RUNNING, &hdev->flags))
 696                 return;
 697
 698         if (urb->status == 0) {
 699                 hdev->stat.byte_rx += urb->actual_length;
 700
 701                 if (btusb_recv_intr(data, urb->transfer_buffer,
 702                                     urb->actual_length) < 0) {
 703                         bt_dev_err(hdev, "corrupted event packet");
 704                         hdev->stat.err_rx++;
 705                 }
 706         } else if (urb->status == -ENOENT) {
 707                 /* Avoid suspend failed when usb_kill_urb */
 708                 return;
 709         }
 710
 711         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 712                 return;
 713
 714         usb_mark_last_busy(data->udev);
 715         usb_anchor_urb(urb, &data->intr_anchor);
 716
 717         err = usb_submit_urb(urb, GFP_ATOMIC);
 718         if (err < 0) {
 719                 /* -EPERM: urb is being killed;
 720                  * -ENODEV: device got disconnected
 721                  */
 722                 if (err != -EPERM && err != -ENODEV)
 723                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
 724                                    urb, -err);
 725                 usb_unanchor_urb(urb);
 726         }
 727 }
 728
 729 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 730 {
 731         struct btusb_data *data = hci_get_drvdata(hdev);
 732         struct urb *urb;
 733         unsigned char *buf;
 734         unsigned int pipe;
 735         int err, size;
 736
 737         BT_DBG("%s", hdev->name);
 738
 739         if (!data->intr_ep)
 740                 return -ENODEV;
 741
 742         urb = usb_alloc_urb(0, mem_flags);
 743         if (!urb)
 744                 return -ENOMEM;
 745
 746         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 747
 748         buf = kmalloc(size, mem_flags);
 749         if (!buf) {
 750                 usb_free_urb(urb);
 751                 return -ENOMEM;
 752         }
 753
 754         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 755
 756         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 757                          btusb_intr_complete, hdev, data->intr_ep->bInterval);
 758
 759         urb->transfer_flags |= URB_FREE_BUFFER;
 760
 761         usb_anchor_urb(urb, &data->intr_anchor);
 762
 763         err = usb_submit_urb(urb, mem_flags);
 764         if (err < 0) {
 765                 if (err != -EPERM && err != -ENODEV)
 766                         bt_dev_err(hdev, "urb %p submission failed (%d)",
 767                                    urb, -err);
 768                 usb_unanchor_urb(urb);
 769         }
 770
 771         usb_free_urb(urb);
 772
 773         return err;
 774 }
 775
 776 static void btusb_bulk_complete(struct urb *urb)
 777 {
 778         struct hci_dev *hdev = urb->context;
 779         struct btusb_data *data = hci_get_drvdata(hdev);
 780         int err;
 781
 782         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 783                urb->actual_length);
 784
 785         if (!test_bit(HCI_RUNNING, &hdev->flags))
 786                 return;
 787
 788         if (urb->status == 0) {
 789                 hdev->stat.byte_rx += urb->actual_length;
 790
 791                 if (data->recv_bulk(data, urb->transfer_buffer,
 792                                     urb->actual_length) < 0) {
 793                         bt_dev_err(hdev, "corrupted ACL packet");
 794                         hdev->stat.err_rx++;
 795                 }
 796         } else if (urb->status == -ENOENT) {
 797                 /* Avoid suspend failed when usb_kill_urb */
 798                 return;
 799         }
 800
 801         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 802                 return;
 803
 804         usb_anchor_urb(urb, &data->bulk_anchor);
 805         usb_mark_last_busy(data->udev);
 806
 807         err = usb_submit_urb(urb, GFP_ATOMIC);
 808         if (err < 0) {
 809                 /* -EPERM: urb is being killed;
 810                  * -ENODEV: device got disconnected
 811                  */
 812                 if (err != -EPERM && err != -ENODEV)
 813                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
 814                                    urb, -err);
 815                 usb_unanchor_urb(urb);
 816         }
 817 }
 818
 819 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 820 {
 821         struct btusb_data *data = hci_get_drvdata(hdev);
 822         struct urb *urb;
 823         unsigned char *buf;
 824         unsigned int pipe;
 825         int err, size = HCI_MAX_FRAME_SIZE;
 826
 827         BT_DBG("%s", hdev->name);
 828
 829         if (!data->bulk_rx_ep)
 830                 return -ENODEV;
 831
 832         urb = usb_alloc_urb(0, mem_flags);
 833         if (!urb)
 834                 return -ENOMEM;
 835
 836         buf = kmalloc(size, mem_flags);
 837         if (!buf) {
 838                 usb_free_urb(urb);
 839                 return -ENOMEM;
 840         }
 841
 842         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 843
 844         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
 845                           btusb_bulk_complete, hdev);
 846
 847         urb->transfer_flags |= URB_FREE_BUFFER;
 848
 849         usb_mark_last_busy(data->udev);
 850         usb_anchor_urb(urb, &data->bulk_anchor);
 851
 852         err = usb_submit_urb(urb, mem_flags);
 853         if (err < 0) {
 854                 if (err != -EPERM && err != -ENODEV)
 855                         bt_dev_err(hdev, "urb %p submission failed (%d)",
 856                                    urb, -err);
 857                 usb_unanchor_urb(urb);
 858         }
 859
 860         usb_free_urb(urb);
 861
 862         return err;
 863 }
 864
 865 static void btusb_isoc_complete(struct urb *urb)
 866 {
 867         struct hci_dev *hdev = urb->context;
 868         struct btusb_data *data = hci_get_drvdata(hdev);
 869         int i, err;
 870
 871         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 872                urb->actual_length);
 873
 874         if (!test_bit(HCI_RUNNING, &hdev->flags))
 875                 return;
 876
 877         if (urb->status == 0) {
 878                 for (i = 0; i < urb->number_of_packets; i++) {
 879                         unsigned int offset = urb->iso_frame_desc[i].offset;
 880                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 881
 882                         if (urb->iso_frame_desc[i].status)
 883                                 continue;
 884
 885                         hdev->stat.byte_rx += length;
 886
 887                         if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
 888                                             length) < 0) {
 889                                 bt_dev_err(hdev, "corrupted SCO packet");
 890                                 hdev->stat.err_rx++;
 891                         }
 892                 }
 893         } else if (urb->status == -ENOENT) {
 894                 /* Avoid suspend failed when usb_kill_urb */
 895                 return;
 896         }
 897
 898         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 899                 return;
 900
 901         usb_anchor_urb(urb, &data->isoc_anchor);
 902
 903         err = usb_submit_urb(urb, GFP_ATOMIC);
 904         if (err < 0) {
 905                 /* -EPERM: urb is being killed;
 906                  * -ENODEV: device got disconnected
 907                  */
 908                 if (err != -EPERM && err != -ENODEV)
 909                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
 910                                    urb, -err);
 911                 usb_unanchor_urb(urb);
 912         }
 913 }
 914
 915 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 916 {
 917         int i, offset = 0;
 918
 919         BT_DBG("len %d mtu %d", len, mtu);
 920
 921         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 922                                         i++, offset += mtu, len -= mtu) {
 923                 urb->iso_frame_desc[i].offset = offset;
 924                 urb->iso_frame_desc[i].length = mtu;
 925         }
 926
 927         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 928                 urb->iso_frame_desc[i].offset = offset;
 929                 urb->iso_frame_desc[i].length = len;
 930                 i++;
 931         }
 932
 933         urb->number_of_packets = i;
 934 }
 935
 936 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 937 {
 938         struct btusb_data *data = hci_get_drvdata(hdev);
 939         struct urb *urb;
 940         unsigned char *buf;
 941         unsigned int pipe;
 942         int err, size;
 943
 944         BT_DBG("%s", hdev->name);
 945
 946         if (!data->isoc_rx_ep)
 947                 return -ENODEV;
 948
 949         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 950         if (!urb)
 951                 return -ENOMEM;
 952
 953         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 954                                                 BTUSB_MAX_ISOC_FRAMES;
 955
 956         buf = kmalloc(size, mem_flags);
 957         if (!buf) {
 958                 usb_free_urb(urb);
 959                 return -ENOMEM;
 960         }
 961
 962         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 963
 964         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 965                          hdev, data->isoc_rx_ep->bInterval);
 966
 967         urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
 968
 969         __fill_isoc_descriptor(urb, size,
 970                                le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 971
 972         usb_anchor_urb(urb, &data->isoc_anchor);
 973
 974         err = usb_submit_urb(urb, mem_flags);
 975         if (err < 0) {
 976                 if (err != -EPERM && err != -ENODEV)
 977                         bt_dev_err(hdev, "urb %p submission failed (%d)",
 978                                    urb, -err);
 979                 usb_unanchor_urb(urb);
 980         }
 981
 982         usb_free_urb(urb);
 983
 984         return err;
 985 }
 986
 987 static void btusb_diag_complete(struct urb *urb)
 988 {
 989         struct hci_dev *hdev = urb->context;
 990         struct btusb_data *data = hci_get_drvdata(hdev);
 991         int err;
 992
 993         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 994                urb->actual_length);
 995
 996         if (urb->status == 0) {
 997                 struct sk_buff *skb;
 998
 999                 skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC);
1000                 if (skb) {
1001                         skb_put_data(skb, urb->transfer_buffer,
1002                                      urb->actual_length);
1003                         hci_recv_diag(hdev, skb);
1004                 }
1005         } else if (urb->status == -ENOENT) {
1006                 /* Avoid suspend failed when usb_kill_urb */
1007                 return;
1008         }
1009
1010         if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags))
1011                 return;
1012
1013         usb_anchor_urb(urb, &data->diag_anchor);
1014         usb_mark_last_busy(data->udev);
1015
1016         err = usb_submit_urb(urb, GFP_ATOMIC);
1017         if (err < 0) {
1018                 /* -EPERM: urb is being killed;
1019                  * -ENODEV: device got disconnected
1020                  */
1021                 if (err != -EPERM && err != -ENODEV)
1022                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1023                                    urb, -err);
1024                 usb_unanchor_urb(urb);
1025         }
1026 }
1027
1028 static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags)
1029 {
1030         struct btusb_data *data = hci_get_drvdata(hdev);
1031         struct urb *urb;
1032         unsigned char *buf;
1033         unsigned int pipe;
1034         int err, size = HCI_MAX_FRAME_SIZE;
1035
1036         BT_DBG("%s", hdev->name);
1037
1038         if (!data->diag_rx_ep)
1039                 return -ENODEV;
1040
1041         urb = usb_alloc_urb(0, mem_flags);
1042         if (!urb)
1043                 return -ENOMEM;
1044
1045         buf = kmalloc(size, mem_flags);
1046         if (!buf) {
1047                 usb_free_urb(urb);
1048                 return -ENOMEM;
1049         }
1050
1051         pipe = usb_rcvbulkpipe(data->udev, data->diag_rx_ep->bEndpointAddress);
1052
1053         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
1054                           btusb_diag_complete, hdev);
1055
1056         urb->transfer_flags |= URB_FREE_BUFFER;
1057
1058         usb_mark_last_busy(data->udev);
1059         usb_anchor_urb(urb, &data->diag_anchor);
1060
1061         err = usb_submit_urb(urb, mem_flags);
1062         if (err < 0) {
1063                 if (err != -EPERM && err != -ENODEV)
1064                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1065                                    urb, -err);
1066                 usb_unanchor_urb(urb);
1067         }
1068
1069         usb_free_urb(urb);
1070
1071         return err;
1072 }
1073
1074 static void btusb_tx_complete(struct urb *urb)
1075 {
1076         struct sk_buff *skb = urb->context;
1077         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1078         struct btusb_data *data = hci_get_drvdata(hdev);
1079         unsigned long flags;
1080
1081         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1082                urb->actual_length);
1083
1084         if (!test_bit(HCI_RUNNING, &hdev->flags))
1085                 goto done;
1086
1087         if (!urb->status)
1088                 hdev->stat.byte_tx += urb->transfer_buffer_length;
1089         else
1090                 hdev->stat.err_tx++;
1091
1092 done:
1093         spin_lock_irqsave(&data->txlock, flags);
1094         data->tx_in_flight--;
1095         spin_unlock_irqrestore(&data->txlock, flags);
1096
1097         kfree(urb->setup_packet);
1098
1099         kfree_skb(skb);
1100 }
1101
1102 static void btusb_isoc_tx_complete(struct urb *urb)
1103 {
1104         struct sk_buff *skb = urb->context;
1105         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1106
1107         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1108                urb->actual_length);
1109
1110         if (!test_bit(HCI_RUNNING, &hdev->flags))
1111                 goto done;
1112
1113         if (!urb->status)
1114                 hdev->stat.byte_tx += urb->transfer_buffer_length;
1115         else
1116                 hdev->stat.err_tx++;
1117
1118 done:
1119         kfree(urb->setup_packet);
1120
1121         kfree_skb(skb);
1122 }
1123
1124 static int btusb_open(struct hci_dev *hdev)
1125 {
1126         struct btusb_data *data = hci_get_drvdata(hdev);
1127         int err;
1128
1129         BT_DBG("%s", hdev->name);
1130
1131         err = usb_autopm_get_interface(data->intf);
1132         if (err < 0)
1133                 return err;
1134
1135         /* Patching USB firmware files prior to starting any URBs of HCI path
1136          * It is more safe to use USB bulk channel for downloading USB patch
1137          */
1138         if (data->setup_on_usb) {
1139                 err = data->setup_on_usb(hdev);
1140                 if (err < 0)
1141                         goto setup_fail;
1142         }
1143
1144         data->intf->needs_remote_wakeup = 1;
1145
1146         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
1147                 goto done;
1148
1149         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
1150         if (err < 0)
1151                 goto failed;
1152
1153         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1154         if (err < 0) {
1155                 usb_kill_anchored_urbs(&data->intr_anchor);
1156                 goto failed;
1157         }
1158
1159         set_bit(BTUSB_BULK_RUNNING, &data->flags);
1160         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1161
1162         if (data->diag) {
1163                 if (!btusb_submit_diag_urb(hdev, GFP_KERNEL))
1164                         set_bit(BTUSB_DIAG_RUNNING, &data->flags);
1165         }
1166
1167 done:
1168         usb_autopm_put_interface(data->intf);
1169         return 0;
1170
1171 failed:
1172         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1173 setup_fail:
1174         usb_autopm_put_interface(data->intf);
1175         return err;
1176 }
1177
1178 static void btusb_stop_traffic(struct btusb_data *data)
1179 {
1180         usb_kill_anchored_urbs(&data->intr_anchor);
1181         usb_kill_anchored_urbs(&data->bulk_anchor);
1182         usb_kill_anchored_urbs(&data->isoc_anchor);
1183         usb_kill_anchored_urbs(&data->diag_anchor);
1184 }
1185
1186 static int btusb_close(struct hci_dev *hdev)
1187 {
1188         struct btusb_data *data = hci_get_drvdata(hdev);
1189         int err;
1190
1191         BT_DBG("%s", hdev->name);
1192
1193         cancel_work_sync(&data->work);
1194         cancel_work_sync(&data->waker);
1195
1196         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1197         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1198         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1199         clear_bit(BTUSB_DIAG_RUNNING, &data->flags);
1200
1201         btusb_stop_traffic(data);
1202         btusb_free_frags(data);
1203
1204         err = usb_autopm_get_interface(data->intf);
1205         if (err < 0)
1206                 goto failed;
1207
1208         data->intf->needs_remote_wakeup = 0;
1209         usb_autopm_put_interface(data->intf);
1210
1211 failed:
1212         usb_scuttle_anchored_urbs(&data->deferred);
1213         return 0;
1214 }
1215
1216 static int btusb_flush(struct hci_dev *hdev)
1217 {
1218         struct btusb_data *data = hci_get_drvdata(hdev);
1219
1220         BT_DBG("%s", hdev->name);
1221
1222         usb_kill_anchored_urbs(&data->tx_anchor);
1223         btusb_free_frags(data);
1224
1225         return 0;
1226 }
1227
1228 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
1229 {
1230         struct btusb_data *data = hci_get_drvdata(hdev);
1231         struct usb_ctrlrequest *dr;
1232         struct urb *urb;
1233         unsigned int pipe;
1234
1235         urb = usb_alloc_urb(0, GFP_KERNEL);
1236         if (!urb)
1237                 return ERR_PTR(-ENOMEM);
1238
1239         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
1240         if (!dr) {
1241                 usb_free_urb(urb);
1242                 return ERR_PTR(-ENOMEM);
1243         }
1244
1245         dr->bRequestType = data->cmdreq_type;
1246         dr->bRequest     = data->cmdreq;
1247         dr->wIndex       = 0;
1248         dr->wValue       = 0;
1249         dr->wLength      = __cpu_to_le16(skb->len);
1250
1251         pipe = usb_sndctrlpipe(data->udev, 0x00);
1252
1253         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
1254                              skb->data, skb->len, btusb_tx_complete, skb);
1255
1256         skb->dev = (void *)hdev;
1257
1258         return urb;
1259 }
1260
1261 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
1262 {
1263         struct btusb_data *data = hci_get_drvdata(hdev);
1264         struct urb *urb;
1265         unsigned int pipe;
1266
1267         if (!data->bulk_tx_ep)
1268                 return ERR_PTR(-ENODEV);
1269
1270         urb = usb_alloc_urb(0, GFP_KERNEL);
1271         if (!urb)
1272                 return ERR_PTR(-ENOMEM);
1273
1274         pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1275
1276         usb_fill_bulk_urb(urb, data->udev, pipe,
1277                           skb->data, skb->len, btusb_tx_complete, skb);
1278
1279         skb->dev = (void *)hdev;
1280
1281         return urb;
1282 }
1283
1284 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1285 {
1286         struct btusb_data *data = hci_get_drvdata(hdev);
1287         struct urb *urb;
1288         unsigned int pipe;
1289
1290         if (!data->isoc_tx_ep)
1291                 return ERR_PTR(-ENODEV);
1292
1293         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1294         if (!urb)
1295                 return ERR_PTR(-ENOMEM);
1296
1297         pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1298
1299         usb_fill_int_urb(urb, data->udev, pipe,
1300                          skb->data, skb->len, btusb_isoc_tx_complete,
1301                          skb, data->isoc_tx_ep->bInterval);
1302
1303         urb->transfer_flags  = URB_ISO_ASAP;
1304
1305         __fill_isoc_descriptor(urb, skb->len,
1306                                le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1307
1308         skb->dev = (void *)hdev;
1309
1310         return urb;
1311 }
1312
1313 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1314 {
1315         struct btusb_data *data = hci_get_drvdata(hdev);
1316         int err;
1317
1318         usb_anchor_urb(urb, &data->tx_anchor);
1319
1320         err = usb_submit_urb(urb, GFP_KERNEL);
1321         if (err < 0) {
1322                 if (err != -EPERM && err != -ENODEV)
1323                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1324                                    urb, -err);
1325                 kfree(urb->setup_packet);
1326                 usb_unanchor_urb(urb);
1327         } else {
1328                 usb_mark_last_busy(data->udev);
1329         }
1330
1331         usb_free_urb(urb);
1332         return err;
1333 }
1334
1335 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1336 {
1337         struct btusb_data *data = hci_get_drvdata(hdev);
1338         unsigned long flags;
1339         bool suspending;
1340
1341         spin_lock_irqsave(&data->txlock, flags);
1342         suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1343         if (!suspending)
1344                 data->tx_in_flight++;
1345         spin_unlock_irqrestore(&data->txlock, flags);
1346
1347         if (!suspending)
1348                 return submit_tx_urb(hdev, urb);
1349
1350         usb_anchor_urb(urb, &data->deferred);
1351         schedule_work(&data->waker);
1352
1353         usb_free_urb(urb);
1354         return 0;
1355 }
1356
1357 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1358 {
1359         struct urb *urb;
1360
1361         BT_DBG("%s", hdev->name);
1362
1363         switch (hci_skb_pkt_type(skb)) {
1364         case HCI_COMMAND_PKT:
1365                 urb = alloc_ctrl_urb(hdev, skb);
1366                 if (IS_ERR(urb))
1367                         return PTR_ERR(urb);
1368
1369                 hdev->stat.cmd_tx++;
1370                 return submit_or_queue_tx_urb(hdev, urb);
1371
1372         case HCI_ACLDATA_PKT:
1373                 urb = alloc_bulk_urb(hdev, skb);
1374                 if (IS_ERR(urb))
1375                         return PTR_ERR(urb);
1376
1377                 hdev->stat.acl_tx++;
1378                 return submit_or_queue_tx_urb(hdev, urb);
1379
1380         case HCI_SCODATA_PKT:
1381                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1382                         return -ENODEV;
1383
1384                 urb = alloc_isoc_urb(hdev, skb);
1385                 if (IS_ERR(urb))
1386                         return PTR_ERR(urb);
1387
1388                 hdev->stat.sco_tx++;
1389                 return submit_tx_urb(hdev, urb);
1390         }
1391
1392         return -EILSEQ;
1393 }
1394
1395 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1396 {
1397         struct btusb_data *data = hci_get_drvdata(hdev);
1398
1399         BT_DBG("%s evt %d", hdev->name, evt);
1400
1401         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1402                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1403                 schedule_work(&data->work);
1404         }
1405 }
1406
1407 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1408 {
1409         struct btusb_data *data = hci_get_drvdata(hdev);
1410         struct usb_interface *intf = data->isoc;
1411         struct usb_endpoint_descriptor *ep_desc;
1412         int i, err;
1413
1414         if (!data->isoc)
1415                 return -ENODEV;
1416
1417         err = usb_set_interface(data->udev, data->isoc_ifnum, altsetting);
1418         if (err < 0) {
1419                 bt_dev_err(hdev, "setting interface failed (%d)", -err);
1420                 return err;
1421         }
1422
1423         data->isoc_altsetting = altsetting;
1424
1425         data->isoc_tx_ep = NULL;
1426         data->isoc_rx_ep = NULL;
1427
1428         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1429                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1430
1431                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1432                         data->isoc_tx_ep = ep_desc;
1433                         continue;
1434                 }
1435
1436                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1437                         data->isoc_rx_ep = ep_desc;
1438                         continue;
1439                 }
1440         }
1441
1442         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1443                 bt_dev_err(hdev, "invalid SCO descriptors");
1444                 return -ENODEV;
1445         }
1446
1447         return 0;
1448 }
1449
1450 static void btusb_work(struct work_struct *work)
1451 {
1452         struct btusb_data *data = container_of(work, struct btusb_data, work);
1453         struct hci_dev *hdev = data->hdev;
1454         int new_alts;
1455         int err;
1456
1457         if (data->sco_num > 0) {
1458                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1459                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1460                         if (err < 0) {
1461                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1462                                 usb_kill_anchored_urbs(&data->isoc_anchor);
1463                                 return;
1464                         }
1465
1466                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1467                 }
1468
1469                 if (hdev->voice_setting & 0x0020) {
1470                         static const int alts[3] = { 2, 4, 5 };
1471
1472                         new_alts = alts[data->sco_num - 1];
1473                 } else {
1474                         new_alts = data->sco_num;
1475                 }
1476
1477                 if (data->isoc_altsetting != new_alts) {
1478                         unsigned long flags;
1479
1480                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1481                         usb_kill_anchored_urbs(&data->isoc_anchor);
1482
1483                         /* When isochronous alternate setting needs to be
1484                          * changed, because SCO connection has been added
1485                          * or removed, a packet fragment may be left in the
1486                          * reassembling state. This could lead to wrongly
1487                          * assembled fragments.
1488                          *
1489                          * Clear outstanding fragment when selecting a new
1490                          * alternate setting.
1491                          */
1492                         spin_lock_irqsave(&data->rxlock, flags);
1493                         kfree_skb(data->sco_skb);
1494                         data->sco_skb = NULL;
1495                         spin_unlock_irqrestore(&data->rxlock, flags);
1496
1497                         if (__set_isoc_interface(hdev, new_alts) < 0)
1498                                 return;
1499                 }
1500
1501                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1502                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1503                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1504                         else
1505                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1506                 }
1507         } else {
1508                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1509                 usb_kill_anchored_urbs(&data->isoc_anchor);
1510
1511                 __set_isoc_interface(hdev, 0);
1512                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1513                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1514         }
1515 }
1516
1517 static void btusb_waker(struct work_struct *work)
1518 {
1519         struct btusb_data *data = container_of(work, struct btusb_data, waker);
1520         int err;
1521
1522         err = usb_autopm_get_interface(data->intf);
1523         if (err < 0)
1524                 return;
1525
1526         usb_autopm_put_interface(data->intf);
1527 }
1528
1529 static int btusb_setup_bcm92035(struct hci_dev *hdev)
1530 {
1531         struct sk_buff *skb;
1532         u8 val = 0x00;
1533
1534         BT_DBG("%s", hdev->name);
1535
1536         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1537         if (IS_ERR(skb))
1538                 bt_dev_err(hdev, "BCM92035 command failed (%ld)", PTR_ERR(skb));
1539         else
1540                 kfree_skb(skb);
1541
1542         return 0;
1543 }
1544
1545 static int btusb_setup_csr(struct hci_dev *hdev)
1546 {
1547         struct hci_rp_read_local_version *rp;
1548         struct sk_buff *skb;
1549
1550         BT_DBG("%s", hdev->name);
1551
1552         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1553                              HCI_INIT_TIMEOUT);
1554         if (IS_ERR(skb)) {
1555                 int err = PTR_ERR(skb);
1556                 bt_dev_err(hdev, "CSR: Local version failed (%d)", err);
1557                 return err;
1558         }
1559
1560         if (skb->len != sizeof(struct hci_rp_read_local_version)) {
1561                 bt_dev_err(hdev, "CSR: Local version length mismatch");
1562                 kfree_skb(skb);
1563                 return -EIO;
1564         }
1565
1566         rp = (struct hci_rp_read_local_version *)skb->data;
1567
1568         /* Detect controllers which aren't real CSR ones. */
1569         if (le16_to_cpu(rp->manufacturer) != 10 ||
1570             le16_to_cpu(rp->lmp_subver) == 0x0c5c) {
1571                 /* Clear the reset quirk since this is not an actual
1572                  * early Bluetooth 1.1 device from CSR.
1573                  */
1574                 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1575
1576                 /* These fake CSR controllers have all a broken
1577                  * stored link key handling and so just disable it.
1578                  */
1579                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
1580         }
1581
1582         kfree_skb(skb);
1583
1584         return 0;
1585 }
1586
1587 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1588                                                        struct intel_version *ver)
1589 {
1590         const struct firmware *fw;
1591         char fwname[64];
1592         int ret;
1593
1594         snprintf(fwname, sizeof(fwname),
1595                  "/*(DEBLOBBED)*/",
1596                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
1597                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1598                  ver->fw_build_ww, ver->fw_build_yy);
1599
1600         ret = reject_firmware(&fw, fwname, &hdev->dev);
1601         if (ret < 0) {
1602                 if (ret == -EINVAL) {
1603                         bt_dev_err(hdev, "Intel firmware file request failed (%d)",
1604                                    ret);
1605                         return NULL;
1606                 }
1607
1608                 bt_dev_err(hdev, "failed to open Intel firmware file: %s (%d)",
1609                            fwname, ret);
1610
1611                 /* If the correct firmware patch file is not found, use the
1612                  * default firmware patch file instead
1613                  */
1614                 snprintf(fwname, sizeof(fwname), "/*(DEBLOBBED)*/",
1615                          ver->hw_platform, ver->hw_variant);
1616                 if (reject_firmware(&fw, fwname, &hdev->dev) < 0) {
1617                         bt_dev_err(hdev, "failed to open default fw file: %s",
1618                                    fwname);
1619                         return NULL;
1620                 }
1621         }
1622
1623         bt_dev_info(hdev, "Intel Bluetooth firmware file: %s", fwname);
1624
1625         return fw;
1626 }
1627
1628 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1629                                       const struct firmware *fw,
1630                                       const u8 **fw_ptr, int *disable_patch)
1631 {
1632         struct sk_buff *skb;
1633         struct hci_command_hdr *cmd;
1634         const u8 *cmd_param;
1635         struct hci_event_hdr *evt = NULL;
1636         const u8 *evt_param = NULL;
1637         int remain = fw->size - (*fw_ptr - fw->data);
1638
1639         /* The first byte indicates the types of the patch command or event.
1640          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1641          * in the current firmware buffer doesn't start with 0x01 or
1642          * the size of remain buffer is smaller than HCI command header,
1643          * the firmware file is corrupted and it should stop the patching
1644          * process.
1645          */
1646         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1647                 bt_dev_err(hdev, "Intel fw corrupted: invalid cmd read");
1648                 return -EINVAL;
1649         }
1650         (*fw_ptr)++;
1651         remain--;
1652
1653         cmd = (struct hci_command_hdr *)(*fw_ptr);
1654         *fw_ptr += sizeof(*cmd);
1655         remain -= sizeof(*cmd);
1656
1657         /* Ensure that the remain firmware data is long enough than the length
1658          * of command parameter. If not, the firmware file is corrupted.
1659          */
1660         if (remain < cmd->plen) {
1661                 bt_dev_err(hdev, "Intel fw corrupted: invalid cmd len");
1662                 return -EFAULT;
1663         }
1664
1665         /* If there is a command that loads a patch in the firmware
1666          * file, then enable the patch upon success, otherwise just
1667          * disable the manufacturer mode, for example patch activation
1668          * is not required when the default firmware patch file is used
1669          * because there are no patch data to load.
1670          */
1671         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1672                 *disable_patch = 0;
1673
1674         cmd_param = *fw_ptr;
1675         *fw_ptr += cmd->plen;
1676         remain -= cmd->plen;
1677
1678         /* This reads the expected events when the above command is sent to the
1679          * device. Some vendor commands expects more than one events, for
1680          * example command status event followed by vendor specific event.
1681          * For this case, it only keeps the last expected event. so the command
1682          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1683          * last expected event.
1684          */
1685         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1686                 (*fw_ptr)++;
1687                 remain--;
1688
1689                 evt = (struct hci_event_hdr *)(*fw_ptr);
1690                 *fw_ptr += sizeof(*evt);
1691                 remain -= sizeof(*evt);
1692
1693                 if (remain < evt->plen) {
1694                         bt_dev_err(hdev, "Intel fw corrupted: invalid evt len");
1695                         return -EFAULT;
1696                 }
1697
1698                 evt_param = *fw_ptr;
1699                 *fw_ptr += evt->plen;
1700                 remain -= evt->plen;
1701         }
1702
1703         /* Every HCI commands in the firmware file has its correspond event.
1704          * If event is not found or remain is smaller than zero, the firmware
1705          * file is corrupted.
1706          */
1707         if (!evt || !evt_param || remain < 0) {
1708                 bt_dev_err(hdev, "Intel fw corrupted: invalid evt read");
1709                 return -EFAULT;
1710         }
1711
1712         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1713                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1714         if (IS_ERR(skb)) {
1715                 bt_dev_err(hdev, "sending Intel patch command (0x%4.4x) failed (%ld)",
1716                            cmd->opcode, PTR_ERR(skb));
1717                 return PTR_ERR(skb);
1718         }
1719
1720         /* It ensures that the returned event matches the event data read from
1721          * the firmware file. At fist, it checks the length and then
1722          * the contents of the event.
1723          */
1724         if (skb->len != evt->plen) {
1725                 bt_dev_err(hdev, "mismatch event length (opcode 0x%4.4x)",
1726                            le16_to_cpu(cmd->opcode));
1727                 kfree_skb(skb);
1728                 return -EFAULT;
1729         }
1730
1731         if (memcmp(skb->data, evt_param, evt->plen)) {
1732                 bt_dev_err(hdev, "mismatch event parameter (opcode 0x%4.4x)",
1733                            le16_to_cpu(cmd->opcode));
1734                 kfree_skb(skb);
1735                 return -EFAULT;
1736         }
1737         kfree_skb(skb);
1738
1739         return 0;
1740 }
1741
1742 static int btusb_setup_intel(struct hci_dev *hdev)
1743 {
1744         struct sk_buff *skb;
1745         const struct firmware *fw;
1746         const u8 *fw_ptr;
1747         int disable_patch, err;
1748         struct intel_version ver;
1749
1750         BT_DBG("%s", hdev->name);
1751
1752         /* The controller has a bug with the first HCI command sent to it
1753          * returning number of completed commands as zero. This would stall the
1754          * command processing in the Bluetooth core.
1755          *
1756          * As a workaround, send HCI Reset command first which will reset the
1757          * number of completed commands and allow normal command processing
1758          * from now on.
1759          */
1760         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1761         if (IS_ERR(skb)) {
1762                 bt_dev_err(hdev, "sending initial HCI reset command failed (%ld)",
1763                            PTR_ERR(skb));
1764                 return PTR_ERR(skb);
1765         }
1766         kfree_skb(skb);
1767
1768         /* Read Intel specific controller version first to allow selection of
1769          * which firmware file to load.
1770          *
1771          * The returned information are hardware variant and revision plus
1772          * firmware variant, revision and build number.
1773          */
1774         err = btintel_read_version(hdev, &ver);
1775         if (err)
1776                 return err;
1777
1778         bt_dev_info(hdev, "read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1779                     ver.hw_platform, ver.hw_variant, ver.hw_revision,
1780                     ver.fw_variant,  ver.fw_revision, ver.fw_build_num,
1781                     ver.fw_build_ww, ver.fw_build_yy, ver.fw_patch_num);
1782
1783         /* fw_patch_num indicates the version of patch the device currently
1784          * have. If there is no patch data in the device, it is always 0x00.
1785          * So, if it is other than 0x00, no need to patch the device again.
1786          */
1787         if (ver.fw_patch_num) {
1788                 bt_dev_info(hdev, "Intel device is already patched. "
1789                             "patch num: %02x", ver.fw_patch_num);
1790                 goto complete;
1791         }
1792
1793         /* Opens the firmware patch file based on the firmware version read
1794          * from the controller. If it fails to open the matching firmware
1795          * patch file, it tries to open the default firmware patch file.
1796          * If no patch file is found, allow the device to operate without
1797          * a patch.
1798          */
1799         fw = btusb_setup_intel_get_fw(hdev, &ver);
1800         if (!fw)
1801                 goto complete;
1802         fw_ptr = fw->data;
1803
1804         /* Enable the manufacturer mode of the controller.
1805          * Only while this mode is enabled, the driver can download the
1806          * firmware patch data and configuration parameters.
1807          */
1808         err = btintel_enter_mfg(hdev);
1809         if (err) {
1810                 release_firmware(fw);
1811                 return err;
1812         }
1813
1814         disable_patch = 1;
1815
1816         /* The firmware data file consists of list of Intel specific HCI
1817          * commands and its expected events. The first byte indicates the
1818          * type of the message, either HCI command or HCI event.
1819          *
1820          * It reads the command and its expected event from the firmware file,
1821          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1822          * the returned event is compared with the event read from the firmware
1823          * file and it will continue until all the messages are downloaded to
1824          * the controller.
1825          *
1826          * Once the firmware patching is completed successfully,
1827          * the manufacturer mode is disabled with reset and activating the
1828          * downloaded patch.
1829          *
1830          * If the firmware patching fails, the manufacturer mode is
1831          * disabled with reset and deactivating the patch.
1832          *
1833          * If the default patch file is used, no reset is done when disabling
1834          * the manufacturer.
1835          */
1836         while (fw->size > fw_ptr - fw->data) {
1837                 int ret;
1838
1839                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1840                                                  &disable_patch);
1841                 if (ret < 0)
1842                         goto exit_mfg_deactivate;
1843         }
1844
1845         release_firmware(fw);
1846
1847         if (disable_patch)
1848                 goto exit_mfg_disable;
1849
1850         /* Patching completed successfully and disable the manufacturer mode
1851          * with reset and activate the downloaded firmware patches.
1852          */
1853         err = btintel_exit_mfg(hdev, true, true);
1854         if (err)
1855                 return err;
1856
1857         bt_dev_info(hdev, "Intel firmware patch completed and activated");
1858
1859         goto complete;
1860
1861 exit_mfg_disable:
1862         /* Disable the manufacturer mode without reset */
1863         err = btintel_exit_mfg(hdev, false, false);
1864         if (err)
1865                 return err;
1866
1867         bt_dev_info(hdev, "Intel firmware patch completed");
1868
1869         goto complete;
1870
1871 exit_mfg_deactivate:
1872         release_firmware(fw);
1873
1874         /* Patching failed. Disable the manufacturer mode with reset and
1875          * deactivate the downloaded firmware patches.
1876          */
1877         err = btintel_exit_mfg(hdev, true, false);
1878         if (err)
1879                 return err;
1880
1881         bt_dev_info(hdev, "Intel firmware patch completed and deactivated");
1882
1883 complete:
1884         /* Set the event mask for Intel specific vendor events. This enables
1885          * a few extra events that are useful during general operation.
1886          */
1887         btintel_set_event_mask_mfg(hdev, false);
1888
1889         btintel_check_bdaddr(hdev);
1890         return 0;
1891 }
1892
1893 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
1894 {
1895         struct sk_buff *skb;
1896         struct hci_event_hdr *hdr;
1897         struct hci_ev_cmd_complete *evt;
1898
1899         skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_KERNEL);
1900         if (!skb)
1901                 return -ENOMEM;
1902
1903         hdr = skb_put(skb, sizeof(*hdr));
1904         hdr->evt = HCI_EV_CMD_COMPLETE;
1905         hdr->plen = sizeof(*evt) + 1;
1906
1907         evt = skb_put(skb, sizeof(*evt));
1908         evt->ncmd = 0x01;
1909         evt->opcode = cpu_to_le16(opcode);
1910
1911         skb_put_u8(skb, 0x00);
1912
1913         hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
1914
1915         return hci_recv_frame(hdev, skb);
1916 }
1917
1918 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
1919                                  int count)
1920 {
1921         /* When the device is in bootloader mode, then it can send
1922          * events via the bulk endpoint. These events are treated the
1923          * same way as the ones received from the interrupt endpoint.
1924          */
1925         if (test_bit(BTUSB_BOOTLOADER, &data->flags))
1926                 return btusb_recv_intr(data, buffer, count);
1927
1928         return btusb_recv_bulk(data, buffer, count);
1929 }
1930
1931 static void btusb_intel_bootup(struct btusb_data *data, const void *ptr,
1932                                unsigned int len)
1933 {
1934         const struct intel_bootup *evt = ptr;
1935
1936         if (len != sizeof(*evt))
1937                 return;
1938
1939         if (test_and_clear_bit(BTUSB_BOOTING, &data->flags)) {
1940                 smp_mb__after_atomic();
1941                 wake_up_bit(&data->flags, BTUSB_BOOTING);
1942         }
1943 }
1944
1945 static void btusb_intel_secure_send_result(struct btusb_data *data,
1946                                            const void *ptr, unsigned int len)
1947 {
1948         const struct intel_secure_send_result *evt = ptr;
1949
1950         if (len != sizeof(*evt))
1951                 return;
1952
1953         if (evt->result)
1954                 set_bit(BTUSB_FIRMWARE_FAILED, &data->flags);
1955
1956         if (test_and_clear_bit(BTUSB_DOWNLOADING, &data->flags) &&
1957             test_bit(BTUSB_FIRMWARE_LOADED, &data->flags)) {
1958                 smp_mb__after_atomic();
1959                 wake_up_bit(&data->flags, BTUSB_DOWNLOADING);
1960         }
1961 }
1962
1963 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
1964 {
1965         struct btusb_data *data = hci_get_drvdata(hdev);
1966
1967         if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1968                 struct hci_event_hdr *hdr = (void *)skb->data;
1969
1970                 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
1971                     hdr->plen > 0) {
1972                         const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
1973                         unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
1974
1975                         switch (skb->data[2]) {
1976                         case 0x02:
1977                                 /* When switching to the operational firmware
1978                                  * the device sends a vendor specific event
1979                                  * indicating that the bootup completed.
1980                                  */
1981                                 btusb_intel_bootup(data, ptr, len);
1982                                 break;
1983                         case 0x06:
1984                                 /* When the firmware loading completes the
1985                                  * device sends out a vendor specific event
1986                                  * indicating the result of the firmware
1987                                  * loading.
1988                                  */
1989                                 btusb_intel_secure_send_result(data, ptr, len);
1990                                 break;
1991                         }
1992                 }
1993         }
1994
1995         return hci_recv_frame(hdev, skb);
1996 }
1997
1998 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
1999 {
2000         struct btusb_data *data = hci_get_drvdata(hdev);
2001         struct urb *urb;
2002
2003         BT_DBG("%s", hdev->name);
2004
2005         switch (hci_skb_pkt_type(skb)) {
2006         case HCI_COMMAND_PKT:
2007                 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
2008                         struct hci_command_hdr *cmd = (void *)skb->data;
2009                         __u16 opcode = le16_to_cpu(cmd->opcode);
2010
2011                         /* When in bootloader mode and the command 0xfc09
2012                          * is received, it needs to be send down the
2013                          * bulk endpoint. So allocate a bulk URB instead.
2014                          */
2015                         if (opcode == 0xfc09)
2016                                 urb = alloc_bulk_urb(hdev, skb);
2017                         else
2018                                 urb = alloc_ctrl_urb(hdev, skb);
2019
2020                         /* When the 0xfc01 command is issued to boot into
2021                          * the operational firmware, it will actually not
2022                          * send a command complete event. To keep the flow
2023                          * control working inject that event here.
2024                          */
2025                         if (opcode == 0xfc01)
2026                                 inject_cmd_complete(hdev, opcode);
2027                 } else {
2028                         urb = alloc_ctrl_urb(hdev, skb);
2029                 }
2030                 if (IS_ERR(urb))
2031                         return PTR_ERR(urb);
2032
2033                 hdev->stat.cmd_tx++;
2034                 return submit_or_queue_tx_urb(hdev, urb);
2035
2036         case HCI_ACLDATA_PKT:
2037                 urb = alloc_bulk_urb(hdev, skb);
2038                 if (IS_ERR(urb))
2039                         return PTR_ERR(urb);
2040
2041                 hdev->stat.acl_tx++;
2042                 return submit_or_queue_tx_urb(hdev, urb);
2043
2044         case HCI_SCODATA_PKT:
2045                 if (hci_conn_num(hdev, SCO_LINK) < 1)
2046                         return -ENODEV;
2047
2048                 urb = alloc_isoc_urb(hdev, skb);
2049                 if (IS_ERR(urb))
2050                         return PTR_ERR(urb);
2051
2052                 hdev->stat.sco_tx++;
2053                 return submit_tx_urb(hdev, urb);
2054         }
2055
2056         return -EILSEQ;
2057 }
2058
2059 static bool btusb_setup_intel_new_get_fw_name(struct intel_version *ver,
2060                                              struct intel_boot_params *params,
2061                                              char *fw_name, size_t len,
2062                                              const char *suffix)
2063 {
2064         switch (ver->hw_variant) {
2065         case 0x0b:      /* SfP */
2066         case 0x0c:      /* WsP */
2067                 snprintf(fw_name, len, "intel/ibt-%u-%u.%s",
2068                         le16_to_cpu(ver->hw_variant),
2069                         le16_to_cpu(params->dev_revid),
2070                         suffix);
2071                 break;
2072         case 0x11:      /* JfP */
2073         case 0x12:      /* ThP */
2074         case 0x13:      /* HrP */
2075         case 0x14:      /* CcP */
2076                 snprintf(fw_name, len, "intel/ibt-%u-%u-%u.%s",
2077                         le16_to_cpu(ver->hw_variant),
2078                         le16_to_cpu(ver->hw_revision),
2079                         le16_to_cpu(ver->fw_revision),
2080                         suffix);
2081                 break;
2082         default:
2083                 return false;
2084         }
2085         return true;
2086 }
2087
2088 static int btusb_setup_intel_new(struct hci_dev *hdev)
2089 {
2090         struct btusb_data *data = hci_get_drvdata(hdev);
2091         struct intel_version ver;
2092         struct intel_boot_params params;
2093         const struct firmware *fw;
2094         u32 boot_param;
2095         char fwname[64];
2096         ktime_t calltime, delta, rettime;
2097         unsigned long long duration;
2098         int err;
2099
2100         BT_DBG("%s", hdev->name);
2101
2102         /* Set the default boot parameter to 0x0 and it is updated to
2103          * SKU specific boot parameter after reading Intel_Write_Boot_Params
2104          * command while downloading the firmware.
2105          */
2106         boot_param = 0x00000000;
2107
2108         calltime = ktime_get();
2109
2110         /* Read the Intel version information to determine if the device
2111          * is in bootloader mode or if it already has operational firmware
2112          * loaded.
2113          */
2114         err = btintel_read_version(hdev, &ver);
2115         if (err)
2116                 return err;
2117
2118         /* The hardware platform number has a fixed value of 0x37 and
2119          * for now only accept this single value.
2120          */
2121         if (ver.hw_platform != 0x37) {
2122                 bt_dev_err(hdev, "Unsupported Intel hardware platform (%u)",
2123                            ver.hw_platform);
2124                 return -EINVAL;
2125         }
2126
2127         /* Check for supported iBT hardware variants of this firmware
2128          * loading method.
2129          *
2130          * This check has been put in place to ensure correct forward
2131          * compatibility options when newer hardware variants come along.
2132          */
2133         switch (ver.hw_variant) {
2134         case 0x0b:      /* SfP */
2135         case 0x0c:      /* WsP */
2136         case 0x11:      /* JfP */
2137         case 0x12:      /* ThP */
2138         case 0x13:      /* HrP */
2139         case 0x14:      /* CcP */
2140                 break;
2141         default:
2142                 bt_dev_err(hdev, "Unsupported Intel hardware variant (%u)",
2143                            ver.hw_variant);
2144                 return -EINVAL;
2145         }
2146
2147         btintel_version_info(hdev, &ver);
2148
2149         /* The firmware variant determines if the device is in bootloader
2150          * mode or is running operational firmware. The value 0x06 identifies
2151          * the bootloader and the value 0x23 identifies the operational
2152          * firmware.
2153          *
2154          * When the operational firmware is already present, then only
2155          * the check for valid Bluetooth device address is needed. This
2156          * determines if the device will be added as configured or
2157          * unconfigured controller.
2158          *
2159          * It is not possible to use the Secure Boot Parameters in this
2160          * case since that command is only available in bootloader mode.
2161          */
2162         if (ver.fw_variant == 0x23) {
2163                 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2164                 btintel_check_bdaddr(hdev);
2165                 return 0;
2166         }
2167
2168         /* If the device is not in bootloader mode, then the only possible
2169          * choice is to return an error and abort the device initialization.
2170          */
2171         if (ver.fw_variant != 0x06) {
2172                 bt_dev_err(hdev, "Unsupported Intel firmware variant (%u)",
2173                            ver.fw_variant);
2174                 return -ENODEV;
2175         }
2176
2177         /* Read the secure boot parameters to identify the operating
2178          * details of the bootloader.
2179          */
2180         err = btintel_read_boot_params(hdev, &params);
2181         if (err)
2182                 return err;
2183
2184         /* It is required that every single firmware fragment is acknowledged
2185          * with a command complete event. If the boot parameters indicate
2186          * that this bootloader does not send them, then abort the setup.
2187          */
2188         if (params.limited_cce != 0x00) {
2189                 bt_dev_err(hdev, "Unsupported Intel firmware loading method (%u)",
2190                            params.limited_cce);
2191                 return -EINVAL;
2192         }
2193
2194         /* If the OTP has no valid Bluetooth device address, then there will
2195          * also be no valid address for the operational firmware.
2196          */
2197         if (!bacmp(&params.otp_bdaddr, BDADDR_ANY)) {
2198                 bt_dev_info(hdev, "No device address configured");
2199                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2200         }
2201
2202         /* With this Intel bootloader only the hardware variant and device
2203          * revision information are used to select the right firmware for SfP
2204          * and WsP.
2205          *
2206          * The firmware filename is ibt-<hw_variant>-<dev_revid>.sfi.
2207          *
2208          * Currently the supported hardware variants are:
2209          *   11 (0x0b) for iBT3.0 (LnP/SfP)
2210          *   12 (0x0c) for iBT3.5 (WsP)
2211          *
2212          * For ThP/JfP and for future SKU's, the FW name varies based on HW
2213          * variant, HW revision and FW revision, as these are dependent on CNVi
2214          * and RF Combination.
2215          *
2216          *   17 (0x11) for iBT3.5 (JfP)
2217          *   18 (0x12) for iBT3.5 (ThP)
2218          *
2219          * The firmware file name for these will be
2220          * ibt-<hw_variant>-<hw_revision>-<fw_revision>.sfi.
2221          *
2222          */
2223         err = btusb_setup_intel_new_get_fw_name(&ver, &params, fwname,
2224                                                 sizeof(fwname), "sfi");
2225         if (!err) {
2226                 bt_dev_err(hdev, "Unsupported Intel firmware naming");
2227                 return -EINVAL;
2228         }
2229
2230         err = reject_firmware(&fw, fwname, &hdev->dev);
2231         if (err < 0) {
2232                 bt_dev_err(hdev, "Failed to load Intel firmware file (%d)", err);
2233                 return err;
2234         }
2235
2236         bt_dev_info(hdev, "Found device firmware: %s", fwname);
2237
2238         /* Save the DDC file name for later use to apply once the firmware
2239          * downloading is done.
2240          */
2241         err = btusb_setup_intel_new_get_fw_name(&ver, &params, fwname,
2242                                                 sizeof(fwname), "ddc");
2243         if (!err) {
2244                 bt_dev_err(hdev, "Unsupported Intel firmware naming");
2245                 return -EINVAL;
2246         }
2247
2248         if (fw->size < 644) {
2249                 bt_dev_err(hdev, "Invalid size of firmware file (%zu)",
2250                            fw->size);
2251                 err = -EBADF;
2252                 goto done;
2253         }
2254
2255         set_bit(BTUSB_DOWNLOADING, &data->flags);
2256
2257         /* Start firmware downloading and get boot parameter */
2258         err = btintel_download_firmware(hdev, fw, &boot_param);
2259         if (err < 0)
2260                 goto done;
2261
2262         set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2263
2264         bt_dev_info(hdev, "Waiting for firmware download to complete");
2265
2266         /* Before switching the device into operational mode and with that
2267          * booting the loaded firmware, wait for the bootloader notification
2268          * that all fragments have been successfully received.
2269          *
2270          * When the event processing receives the notification, then the
2271          * BTUSB_DOWNLOADING flag will be cleared.
2272          *
2273          * The firmware loading should not take longer than 5 seconds
2274          * and thus just timeout if that happens and fail the setup
2275          * of this device.
2276          */
2277         err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
2278                                   TASK_INTERRUPTIBLE,
2279                                   msecs_to_jiffies(5000));
2280         if (err == -EINTR) {
2281                 bt_dev_err(hdev, "Firmware loading interrupted");
2282                 goto done;
2283         }
2284
2285         if (err) {
2286                 bt_dev_err(hdev, "Firmware loading timeout");
2287                 err = -ETIMEDOUT;
2288                 goto done;
2289         }
2290
2291         if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) {
2292                 bt_dev_err(hdev, "Firmware loading failed");
2293                 err = -ENOEXEC;
2294                 goto done;
2295         }
2296
2297         rettime = ktime_get();
2298         delta = ktime_sub(rettime, calltime);
2299         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2300
2301         bt_dev_info(hdev, "Firmware loaded in %llu usecs", duration);
2302
2303 done:
2304         release_firmware(fw);
2305
2306         if (err < 0)
2307                 return err;
2308
2309         calltime = ktime_get();
2310
2311         set_bit(BTUSB_BOOTING, &data->flags);
2312
2313         err = btintel_send_intel_reset(hdev, boot_param);
2314         if (err)
2315                 return err;
2316
2317         /* The bootloader will not indicate when the device is ready. This
2318          * is done by the operational firmware sending bootup notification.
2319          *
2320          * Booting into operational firmware should not take longer than
2321          * 1 second. However if that happens, then just fail the setup
2322          * since something went wrong.
2323          */
2324         bt_dev_info(hdev, "Waiting for device to boot");
2325
2326         err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING,
2327                                   TASK_INTERRUPTIBLE,
2328                                   msecs_to_jiffies(1000));
2329
2330         if (err == -EINTR) {
2331                 bt_dev_err(hdev, "Device boot interrupted");
2332                 return -EINTR;
2333         }
2334
2335         if (err) {
2336                 bt_dev_err(hdev, "Device boot timeout");
2337                 return -ETIMEDOUT;
2338         }
2339
2340         rettime = ktime_get();
2341         delta = ktime_sub(rettime, calltime);
2342         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2343
2344         bt_dev_info(hdev, "Device booted in %llu usecs", duration);
2345
2346         clear_bit(BTUSB_BOOTLOADER, &data->flags);
2347
2348         /* Once the device is running in operational mode, it needs to apply
2349          * the device configuration (DDC) parameters.
2350          *
2351          * The device can work without DDC parameters, so even if it fails
2352          * to load the file, no need to fail the setup.
2353          */
2354         btintel_load_ddc_config(hdev, fwname);
2355
2356         /* Set the event mask for Intel specific vendor events. This enables
2357          * a few extra events that are useful during general operation. It
2358          * does not enable any debugging related events.
2359          *
2360          * The device will function correctly without these events enabled
2361          * and thus no need to fail the setup.
2362          */
2363         btintel_set_event_mask(hdev, false);
2364
2365         return 0;
2366 }
2367
2368 static int btusb_shutdown_intel(struct hci_dev *hdev)
2369 {
2370         struct sk_buff *skb;
2371         long ret;
2372
2373         /* In the shutdown sequence where Bluetooth is turned off followed
2374          * by WiFi being turned off, turning WiFi back on causes issue with
2375          * the RF calibration.
2376          *
2377          * To ensure that any RF activity has been stopped, issue HCI Reset
2378          * command to clear all ongoing activity including advertising,
2379          * scanning etc.
2380          */
2381         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2382         if (IS_ERR(skb)) {
2383                 ret = PTR_ERR(skb);
2384                 bt_dev_err(hdev, "HCI reset during shutdown failed");
2385                 return ret;
2386         }
2387         kfree_skb(skb);
2388
2389         /* Some platforms have an issue with BT LED when the interface is
2390          * down or BT radio is turned off, which takes 5 seconds to BT LED
2391          * goes off. This command turns off the BT LED immediately.
2392          */
2393         skb = __hci_cmd_sync(hdev, 0xfc3f, 0, NULL, HCI_INIT_TIMEOUT);
2394         if (IS_ERR(skb)) {
2395                 ret = PTR_ERR(skb);
2396                 bt_dev_err(hdev, "turning off Intel device LED failed");
2397                 return ret;
2398         }
2399         kfree_skb(skb);
2400
2401         return 0;
2402 }
2403
2404 #ifdef CONFIG_PM
2405 /* Configure an out-of-band gpio as wake-up pin, if specified in device tree */
2406 static int marvell_config_oob_wake(struct hci_dev *hdev)
2407 {
2408         struct sk_buff *skb;
2409         struct btusb_data *data = hci_get_drvdata(hdev);
2410         struct device *dev = &data->udev->dev;
2411         u16 pin, gap, opcode;
2412         int ret;
2413         u8 cmd[5];
2414
2415         /* Move on if no wakeup pin specified */
2416         if (of_property_read_u16(dev->of_node, "marvell,wakeup-pin", &pin) ||
2417             of_property_read_u16(dev->of_node, "marvell,wakeup-gap-ms", &gap))
2418                 return 0;
2419
2420         /* Vendor specific command to configure a GPIO as wake-up pin */
2421         opcode = hci_opcode_pack(0x3F, 0x59);
2422         cmd[0] = opcode & 0xFF;
2423         cmd[1] = opcode >> 8;
2424         cmd[2] = 2; /* length of parameters that follow */
2425         cmd[3] = pin;
2426         cmd[4] = gap; /* time in ms, for which wakeup pin should be asserted */
2427
2428         skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
2429         if (!skb) {
2430                 bt_dev_err(hdev, "%s: No memory\n", __func__);
2431                 return -ENOMEM;
2432         }
2433
2434         skb_put_data(skb, cmd, sizeof(cmd));
2435         hci_skb_pkt_type(skb) = HCI_COMMAND_PKT;
2436
2437         ret = btusb_send_frame(hdev, skb);
2438         if (ret) {
2439                 bt_dev_err(hdev, "%s: configuration failed\n", __func__);
2440                 kfree_skb(skb);
2441                 return ret;
2442         }
2443
2444         return 0;
2445 }
2446 #endif
2447
2448 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
2449                                     const bdaddr_t *bdaddr)
2450 {
2451         struct sk_buff *skb;
2452         u8 buf[8];
2453         long ret;
2454
2455         buf[0] = 0xfe;
2456         buf[1] = sizeof(bdaddr_t);
2457         memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
2458
2459         skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2460         if (IS_ERR(skb)) {
2461                 ret = PTR_ERR(skb);
2462                 bt_dev_err(hdev, "changing Marvell device address failed (%ld)",
2463                            ret);
2464                 return ret;
2465         }
2466         kfree_skb(skb);
2467
2468         return 0;
2469 }
2470
2471 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
2472                                     const bdaddr_t *bdaddr)
2473 {
2474         struct sk_buff *skb;
2475         u8 buf[10];
2476         long ret;
2477
2478         buf[0] = 0x01;
2479         buf[1] = 0x01;
2480         buf[2] = 0x00;
2481         buf[3] = sizeof(bdaddr_t);
2482         memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
2483
2484         skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2485         if (IS_ERR(skb)) {
2486                 ret = PTR_ERR(skb);
2487                 bt_dev_err(hdev, "Change address command failed (%ld)", ret);
2488                 return ret;
2489         }
2490         kfree_skb(skb);
2491
2492         return 0;
2493 }
2494
2495 #define QCA_DFU_PACKET_LEN      4096
2496
2497 #define QCA_GET_TARGET_VERSION  0x09
2498 #define QCA_CHECK_STATUS        0x05
2499 #define QCA_DFU_DOWNLOAD        0x01
2500
2501 #define QCA_SYSCFG_UPDATED      0x40
2502 #define QCA_PATCH_UPDATED       0x80
2503 #define QCA_DFU_TIMEOUT         3000
2504
2505 struct qca_version {
2506         __le32  rom_version;
2507         __le32  patch_version;
2508         __le32  ram_version;
2509         __le32  ref_clock;
2510         __u8    reserved[4];
2511 } __packed;
2512
2513 struct qca_rampatch_version {
2514         __le16  rom_version;
2515         __le16  patch_version;
2516 } __packed;
2517
2518 struct qca_device_info {
2519         u32     rom_version;
2520         u8      rampatch_hdr;   /* length of header in rampatch */
2521         u8      nvm_hdr;        /* length of header in NVM */
2522         u8      ver_offset;     /* offset of version structure in rampatch */
2523 };
2524
2525 static const struct qca_device_info qca_devices_table[] = {
2526         { 0x00000100, 20, 4, 10 }, /* Rome 1.0 */
2527         { 0x00000101, 20, 4, 10 }, /* Rome 1.1 */
2528         { 0x00000200, 28, 4, 18 }, /* Rome 2.0 */
2529         { 0x00000201, 28, 4, 18 }, /* Rome 2.1 */
2530         { 0x00000300, 28, 4, 18 }, /* Rome 3.0 */
2531         { 0x00000302, 28, 4, 18 }, /* Rome 3.2 */
2532 };
2533
2534 static int btusb_qca_send_vendor_req(struct usb_device *udev, u8 request,
2535                                      void *data, u16 size)
2536 {
2537         int pipe, err;
2538         u8 *buf;
2539
2540         buf = kmalloc(size, GFP_KERNEL);
2541         if (!buf)
2542                 return -ENOMEM;
2543
2544         /* Found some of USB hosts have IOT issues with ours so that we should
2545          * not wait until HCI layer is ready.
2546          */
2547         pipe = usb_rcvctrlpipe(udev, 0);
2548         err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
2549                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2550         if (err < 0) {
2551                 dev_err(&udev->dev, "Failed to access otp area (%d)", err);
2552                 goto done;
2553         }
2554
2555         memcpy(data, buf, size);
2556
2557 done:
2558         kfree(buf);
2559
2560         return err;
2561 }
2562
2563 static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
2564                                        const struct firmware *firmware,
2565                                        size_t hdr_size)
2566 {
2567         struct btusb_data *btdata = hci_get_drvdata(hdev);
2568         struct usb_device *udev = btdata->udev;
2569         size_t count, size, sent = 0;
2570         int pipe, len, err;
2571         u8 *buf;
2572
2573         buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
2574         if (!buf)
2575                 return -ENOMEM;
2576
2577         count = firmware->size;
2578
2579         size = min_t(size_t, count, hdr_size);
2580         memcpy(buf, firmware->data, size);
2581
2582         /* USB patches should go down to controller through USB path
2583          * because binary format fits to go down through USB channel.
2584          * USB control path is for patching headers and USB bulk is for
2585          * patch body.
2586          */
2587         pipe = usb_sndctrlpipe(udev, 0);
2588         err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
2589                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2590         if (err < 0) {
2591                 bt_dev_err(hdev, "Failed to send headers (%d)", err);
2592                 goto done;
2593         }
2594
2595         sent += size;
2596         count -= size;
2597
2598         /* ep2 need time to switch from function acl to function dfu,
2599          * so we add 20ms delay here.
2600          */
2601         msleep(20);
2602
2603         while (count) {
2604                 size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
2605
2606                 memcpy(buf, firmware->data + sent, size);
2607
2608                 pipe = usb_sndbulkpipe(udev, 0x02);
2609                 err = usb_bulk_msg(udev, pipe, buf, size, &len,
2610                                    QCA_DFU_TIMEOUT);
2611                 if (err < 0) {
2612                         bt_dev_err(hdev, "Failed to send body at %zd of %zd (%d)",
2613                                    sent, firmware->size, err);
2614                         break;
2615                 }
2616
2617                 if (size != len) {
2618                         bt_dev_err(hdev, "Failed to get bulk buffer");
2619                         err = -EILSEQ;
2620                         break;
2621                 }
2622
2623                 sent  += size;
2624                 count -= size;
2625         }
2626
2627 done:
2628         kfree(buf);
2629         return err;
2630 }
2631
2632 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
2633                                          struct qca_version *ver,
2634                                          const struct qca_device_info *info)
2635 {
2636         struct qca_rampatch_version *rver;
2637         const struct firmware *fw;
2638         u32 ver_rom, ver_patch;
2639         u16 rver_rom, rver_patch;
2640         char fwname[64];
2641         int err;
2642
2643         ver_rom = le32_to_cpu(ver->rom_version);
2644         ver_patch = le32_to_cpu(ver->patch_version);
2645
2646         snprintf(fwname, sizeof(fwname), "/*(DEBLOBBED)*/", ver_rom);
2647
2648         err = reject_firmware(&fw, fwname, &hdev->dev);
2649         if (err) {
2650                 bt_dev_err(hdev, "failed to request rampatch file: %s (%d)",
2651                            fwname, err);
2652                 return err;
2653         }
2654
2655         bt_dev_info(hdev, "using rampatch file: %s", fwname);
2656
2657         rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
2658         rver_rom = le16_to_cpu(rver->rom_version);
2659         rver_patch = le16_to_cpu(rver->patch_version);
2660
2661         bt_dev_info(hdev, "QCA: patch rome 0x%x build 0x%x, "
2662                     "firmware rome 0x%x build 0x%x",
2663                     rver_rom, rver_patch, ver_rom, ver_patch);
2664
2665         if (rver_rom != ver_rom || rver_patch <= ver_patch) {
2666                 bt_dev_err(hdev, "rampatch file version did not match with firmware");
2667                 err = -EINVAL;
2668                 goto done;
2669         }
2670
2671         err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
2672
2673 done:
2674         release_firmware(fw);
2675
2676         return err;
2677 }
2678
2679 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
2680                                     struct qca_version *ver,
2681                                     const struct qca_device_info *info)
2682 {
2683         const struct firmware *fw;
2684         char fwname[64];
2685         int err;
2686
2687         snprintf(fwname, sizeof(fwname), "/*(DEBLOBBED)*/",
2688                  le32_to_cpu(ver->rom_version));
2689
2690         err = reject_firmware(&fw, fwname, &hdev->dev);
2691         if (err) {
2692                 bt_dev_err(hdev, "failed to request NVM file: %s (%d)",
2693                            fwname, err);
2694                 return err;
2695         }
2696
2697         bt_dev_info(hdev, "using NVM file: %s", fwname);
2698
2699         err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
2700
2701         release_firmware(fw);
2702
2703         return err;
2704 }
2705
2706 /* identify the ROM version and check whether patches are needed */
2707 static bool btusb_qca_need_patch(struct usb_device *udev)
2708 {
2709         struct qca_version ver;
2710
2711         if (btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
2712                                       sizeof(ver)) < 0)
2713                 return false;
2714         /* only low ROM versions need patches */
2715         return !(le32_to_cpu(ver.rom_version) & ~0xffffU);
2716 }
2717
2718 static int btusb_setup_qca(struct hci_dev *hdev)
2719 {
2720         struct btusb_data *btdata = hci_get_drvdata(hdev);
2721         struct usb_device *udev = btdata->udev;
2722         const struct qca_device_info *info = NULL;
2723         struct qca_version ver;
2724         u32 ver_rom;
2725         u8 status;
2726         int i, err;
2727
2728         err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
2729                                         sizeof(ver));
2730         if (err < 0)
2731                 return err;
2732
2733         ver_rom = le32_to_cpu(ver.rom_version);
2734         /* Don't care about high ROM versions */
2735         if (ver_rom & ~0xffffU)
2736                 return 0;
2737
2738         for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
2739                 if (ver_rom == qca_devices_table[i].rom_version)
2740                         info = &qca_devices_table[i];
2741         }
2742         if (!info) {
2743                 bt_dev_err(hdev, "don't support firmware rome 0x%x", ver_rom);
2744                 return -ENODEV;
2745         }
2746
2747         err = btusb_qca_send_vendor_req(udev, QCA_CHECK_STATUS, &status,
2748                                         sizeof(status));
2749         if (err < 0)
2750                 return err;
2751
2752         if (!(status & QCA_PATCH_UPDATED)) {
2753                 err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
2754                 if (err < 0)
2755                         return err;
2756         }
2757
2758         if (!(status & QCA_SYSCFG_UPDATED)) {
2759                 err = btusb_setup_qca_load_nvm(hdev, &ver, info);
2760                 if (err < 0)
2761                         return err;
2762         }
2763
2764         return 0;
2765 }
2766
2767 #ifdef CONFIG_BT_HCIBTUSB_BCM
2768 static inline int __set_diag_interface(struct hci_dev *hdev)
2769 {
2770         struct btusb_data *data = hci_get_drvdata(hdev);
2771         struct usb_interface *intf = data->diag;
2772         int i;
2773
2774         if (!data->diag)
2775                 return -ENODEV;
2776
2777         data->diag_tx_ep = NULL;
2778         data->diag_rx_ep = NULL;
2779
2780         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2781                 struct usb_endpoint_descriptor *ep_desc;
2782
2783                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2784
2785                 if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
2786                         data->diag_tx_ep = ep_desc;
2787                         continue;
2788                 }
2789
2790                 if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
2791                         data->diag_rx_ep = ep_desc;
2792                         continue;
2793                 }
2794         }
2795
2796         if (!data->diag_tx_ep || !data->diag_rx_ep) {
2797                 bt_dev_err(hdev, "invalid diagnostic descriptors");
2798                 return -ENODEV;
2799         }
2800
2801         return 0;
2802 }
2803
2804 static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable)
2805 {
2806         struct btusb_data *data = hci_get_drvdata(hdev);
2807         struct sk_buff *skb;
2808         struct urb *urb;
2809         unsigned int pipe;
2810
2811         if (!data->diag_tx_ep)
2812                 return ERR_PTR(-ENODEV);
2813
2814         urb = usb_alloc_urb(0, GFP_KERNEL);
2815         if (!urb)
2816                 return ERR_PTR(-ENOMEM);
2817
2818         skb = bt_skb_alloc(2, GFP_KERNEL);
2819         if (!skb) {
2820                 usb_free_urb(urb);
2821                 return ERR_PTR(-ENOMEM);
2822         }
2823
2824         skb_put_u8(skb, 0xf0);
2825         skb_put_u8(skb, enable);
2826
2827         pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress);
2828
2829         usb_fill_bulk_urb(urb, data->udev, pipe,
2830                           skb->data, skb->len, btusb_tx_complete, skb);
2831
2832         skb->dev = (void *)hdev;
2833
2834         return urb;
2835 }
2836
2837 static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable)
2838 {
2839         struct btusb_data *data = hci_get_drvdata(hdev);
2840         struct urb *urb;
2841
2842         if (!data->diag)
2843                 return -ENODEV;
2844
2845         if (!test_bit(HCI_RUNNING, &hdev->flags))
2846                 return -ENETDOWN;
2847
2848         urb = alloc_diag_urb(hdev, enable);
2849         if (IS_ERR(urb))
2850                 return PTR_ERR(urb);
2851
2852         return submit_or_queue_tx_urb(hdev, urb);
2853 }
2854 #endif
2855
2856 #ifdef CONFIG_PM
2857 static irqreturn_t btusb_oob_wake_handler(int irq, void *priv)
2858 {
2859         struct btusb_data *data = priv;
2860
2861         pm_wakeup_event(&data->udev->dev, 0);
2862         pm_system_wakeup();
2863
2864         /* Disable only if not already disabled (keep it balanced) */
2865         if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
2866                 disable_irq_nosync(irq);
2867                 disable_irq_wake(irq);
2868         }
2869         return IRQ_HANDLED;
2870 }
2871
2872 static const struct of_device_id btusb_match_table[] = {
2873         { .compatible = "usb1286,204e" },
2874         { }
2875 };
2876 MODULE_DEVICE_TABLE(of, btusb_match_table);
2877
2878 /* Use an oob wakeup pin? */
2879 static int btusb_config_oob_wake(struct hci_dev *hdev)
2880 {
2881         struct btusb_data *data = hci_get_drvdata(hdev);
2882         struct device *dev = &data->udev->dev;
2883         int irq, ret;
2884
2885         clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
2886
2887         if (!of_match_device(btusb_match_table, dev))
2888                 return 0;
2889
2890         /* Move on if no IRQ specified */
2891         irq = of_irq_get_byname(dev->of_node, "wakeup");
2892         if (irq <= 0) {
2893                 bt_dev_dbg(hdev, "%s: no OOB Wakeup IRQ in DT", __func__);
2894                 return 0;
2895         }
2896
2897         irq_set_status_flags(irq, IRQ_NOAUTOEN);
2898         ret = devm_request_irq(&hdev->dev, irq, btusb_oob_wake_handler,
2899                                0, "OOB Wake-on-BT", data);
2900         if (ret) {
2901                 bt_dev_err(hdev, "%s: IRQ request failed", __func__);
2902                 return ret;
2903         }
2904
2905         ret = device_init_wakeup(dev, true);
2906         if (ret) {
2907                 bt_dev_err(hdev, "%s: failed to init_wakeup", __func__);
2908                 return ret;
2909         }
2910
2911         data->oob_wake_irq = irq;
2912         bt_dev_info(hdev, "OOB Wake-on-BT configured at IRQ %u", irq);
2913         return 0;
2914 }
2915 #endif
2916
2917 static void btusb_check_needs_reset_resume(struct usb_interface *intf)
2918 {
2919         if (dmi_check_system(btusb_needs_reset_resume_table))
2920                 interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME;
2921 }
2922
2923 static int btusb_probe(struct usb_interface *intf,
2924                        const struct usb_device_id *id)
2925 {
2926         struct usb_endpoint_descriptor *ep_desc;
2927         struct btusb_data *data;
2928         struct hci_dev *hdev;
2929         unsigned ifnum_base;
2930         int i, err;
2931
2932         BT_DBG("intf %p id %p", intf, id);
2933
2934         /* interface numbers are hardcoded in the spec */
2935         if (intf->cur_altsetting->desc.bInterfaceNumber != 0) {
2936                 if (!(id->driver_info & BTUSB_IFNUM_2))
2937                         return -ENODEV;
2938                 if (intf->cur_altsetting->desc.bInterfaceNumber != 2)
2939                         return -ENODEV;
2940         }
2941
2942         ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber;
2943
2944         if (!id->driver_info) {
2945                 const struct usb_device_id *match;
2946
2947                 match = usb_match_id(intf, blacklist_table);
2948                 if (match)
2949                         id = match;
2950         }
2951
2952         if (id->driver_info == BTUSB_IGNORE)
2953                 return -ENODEV;
2954
2955         if (id->driver_info & BTUSB_ATH3012) {
2956                 struct usb_device *udev = interface_to_usbdev(intf);
2957
2958                 /* Old firmware would otherwise let ath3k driver load
2959                  * patch and sysconfig files
2960                  */
2961                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001 &&
2962                     !btusb_qca_need_patch(udev))
2963                         return -ENODEV;
2964         }
2965
2966         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
2967         if (!data)
2968                 return -ENOMEM;
2969
2970         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2971                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2972
2973                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
2974                         data->intr_ep = ep_desc;
2975                         continue;
2976                 }
2977
2978                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
2979                         data->bulk_tx_ep = ep_desc;
2980                         continue;
2981                 }
2982
2983                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
2984                         data->bulk_rx_ep = ep_desc;
2985                         continue;
2986                 }
2987         }
2988
2989         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
2990                 return -ENODEV;
2991
2992         if (id->driver_info & BTUSB_AMP) {
2993                 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
2994                 data->cmdreq = 0x2b;
2995         } else {
2996                 data->cmdreq_type = USB_TYPE_CLASS;
2997                 data->cmdreq = 0x00;
2998         }
2999
3000         data->udev = interface_to_usbdev(intf);
3001         data->intf = intf;
3002
3003         INIT_WORK(&data->work, btusb_work);
3004         INIT_WORK(&data->waker, btusb_waker);
3005         init_usb_anchor(&data->deferred);
3006         init_usb_anchor(&data->tx_anchor);
3007         spin_lock_init(&data->txlock);
3008
3009         init_usb_anchor(&data->intr_anchor);
3010         init_usb_anchor(&data->bulk_anchor);
3011         init_usb_anchor(&data->isoc_anchor);
3012         init_usb_anchor(&data->diag_anchor);
3013         spin_lock_init(&data->rxlock);
3014
3015         if (id->driver_info & BTUSB_INTEL_NEW) {
3016                 data->recv_event = btusb_recv_event_intel;
3017                 data->recv_bulk = btusb_recv_bulk_intel;
3018                 set_bit(BTUSB_BOOTLOADER, &data->flags);
3019         } else {
3020                 data->recv_event = hci_recv_frame;
3021                 data->recv_bulk = btusb_recv_bulk;
3022         }
3023
3024         hdev = hci_alloc_dev();
3025         if (!hdev)
3026                 return -ENOMEM;
3027
3028         hdev->bus = HCI_USB;
3029         hci_set_drvdata(hdev, data);
3030
3031         if (id->driver_info & BTUSB_AMP)
3032                 hdev->dev_type = HCI_AMP;
3033         else
3034                 hdev->dev_type = HCI_PRIMARY;
3035
3036         data->hdev = hdev;
3037
3038         SET_HCIDEV_DEV(hdev, &intf->dev);
3039
3040         hdev->open   = btusb_open;
3041         hdev->close  = btusb_close;
3042         hdev->flush  = btusb_flush;
3043         hdev->send   = btusb_send_frame;
3044         hdev->notify = btusb_notify;
3045
3046 #ifdef CONFIG_PM
3047         err = btusb_config_oob_wake(hdev);
3048         if (err)
3049                 goto out_free_dev;
3050
3051         /* Marvell devices may need a specific chip configuration */
3052         if (id->driver_info & BTUSB_MARVELL && data->oob_wake_irq) {
3053                 err = marvell_config_oob_wake(hdev);
3054                 if (err)
3055                         goto out_free_dev;
3056         }
3057 #endif
3058         if (id->driver_info & BTUSB_CW6622)
3059                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
3060
3061         if (id->driver_info & BTUSB_BCM2045)
3062                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
3063
3064         if (id->driver_info & BTUSB_BCM92035)
3065                 hdev->setup = btusb_setup_bcm92035;
3066
3067 #ifdef CONFIG_BT_HCIBTUSB_BCM
3068         if (id->driver_info & BTUSB_BCM_PATCHRAM) {
3069                 hdev->manufacturer = 15;
3070                 hdev->setup = btbcm_setup_patchram;
3071                 hdev->set_diag = btusb_bcm_set_diag;
3072                 hdev->set_bdaddr = btbcm_set_bdaddr;
3073
3074                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
3075                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
3076         }
3077
3078         if (id->driver_info & BTUSB_BCM_APPLE) {
3079                 hdev->manufacturer = 15;
3080                 hdev->setup = btbcm_setup_apple;
3081                 hdev->set_diag = btusb_bcm_set_diag;
3082
3083                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
3084                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
3085         }
3086 #endif
3087
3088         if (id->driver_info & BTUSB_INTEL) {
3089                 hdev->manufacturer = 2;
3090                 hdev->setup = btusb_setup_intel;
3091                 hdev->shutdown = btusb_shutdown_intel;
3092                 hdev->set_diag = btintel_set_diag_mfg;
3093                 hdev->set_bdaddr = btintel_set_bdaddr;
3094                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3095                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3096                 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
3097         }
3098
3099         if (id->driver_info & BTUSB_INTEL_NEW) {
3100                 hdev->manufacturer = 2;
3101                 hdev->send = btusb_send_frame_intel;
3102                 hdev->setup = btusb_setup_intel_new;
3103                 hdev->hw_error = btintel_hw_error;
3104                 hdev->set_diag = btintel_set_diag;
3105                 hdev->set_bdaddr = btintel_set_bdaddr;
3106                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3107                 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
3108         }
3109
3110         if (id->driver_info & BTUSB_MARVELL)
3111                 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
3112
3113         if (id->driver_info & BTUSB_SWAVE) {
3114                 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
3115                 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
3116         }
3117
3118         if (id->driver_info & BTUSB_INTEL_BOOT) {
3119                 hdev->manufacturer = 2;
3120                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3121         }
3122
3123         if (id->driver_info & BTUSB_ATH3012) {
3124                 data->setup_on_usb = btusb_setup_qca;
3125                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
3126                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3127                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3128         }
3129
3130         if (id->driver_info & BTUSB_QCA_ROME) {
3131                 data->setup_on_usb = btusb_setup_qca;
3132                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
3133                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3134                 btusb_check_needs_reset_resume(intf);
3135         }
3136
3137 #ifdef CONFIG_BT_HCIBTUSB_RTL
3138         if (id->driver_info & BTUSB_REALTEK) {
3139                 hdev->setup = btrtl_setup_realtek;
3140                 hdev->shutdown = btrtl_shutdown_realtek;
3141
3142                 /* Realtek devices lose their updated firmware over suspend,
3143                  * but the USB hub doesn't notice any status change.
3144                  * Explicitly request a device reset on resume.
3145                  */
3146                 interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME;
3147         }
3148 #endif
3149
3150         if (id->driver_info & BTUSB_AMP) {
3151                 /* AMP controllers do not support SCO packets */
3152                 data->isoc = NULL;
3153         } else {
3154                 /* Interface orders are hardcoded in the specification */
3155                 data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1);
3156                 data->isoc_ifnum = ifnum_base + 1;
3157         }
3158
3159         if (!reset)
3160                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3161
3162         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
3163                 if (!disable_scofix)
3164                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
3165         }
3166
3167         if (id->driver_info & BTUSB_BROKEN_ISOC)
3168                 data->isoc = NULL;
3169
3170         if (id->driver_info & BTUSB_DIGIANSWER) {
3171                 data->cmdreq_type = USB_TYPE_VENDOR;
3172                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3173         }
3174
3175         if (id->driver_info & BTUSB_CSR) {
3176                 struct usb_device *udev = data->udev;
3177                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
3178
3179                 /* Old firmware would otherwise execute USB reset */
3180                 if (bcdDevice < 0x117)
3181                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3182
3183                 /* Fake CSR devices with broken commands */
3184                 if (bcdDevice <= 0x100 || bcdDevice == 0x134)
3185                         hdev->setup = btusb_setup_csr;
3186
3187                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3188         }
3189
3190         if (id->driver_info & BTUSB_SNIFFER) {
3191                 struct usb_device *udev = data->udev;
3192
3193                 /* New sniffer firmware has crippled HCI interface */
3194                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
3195                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3196         }
3197
3198         if (id->driver_info & BTUSB_INTEL_BOOT) {
3199                 /* A bug in the bootloader causes that interrupt interface is
3200                  * only enabled after receiving SetInterface(0, AltSetting=0).
3201                  */
3202                 err = usb_set_interface(data->udev, 0, 0);
3203                 if (err < 0) {
3204                         BT_ERR("failed to set interface 0, alt 0 %d", err);
3205                         goto out_free_dev;
3206                 }
3207         }
3208
3209         if (data->isoc) {
3210                 err = usb_driver_claim_interface(&btusb_driver,
3211                                                  data->isoc, data);
3212                 if (err < 0)
3213                         goto out_free_dev;
3214         }
3215
3216 #ifdef CONFIG_BT_HCIBTUSB_BCM
3217         if (data->diag) {
3218                 if (!usb_driver_claim_interface(&btusb_driver,
3219                                                 data->diag, data))
3220                         __set_diag_interface(hdev);
3221                 else
3222                         data->diag = NULL;
3223         }
3224 #endif
3225
3226         if (enable_autosuspend)
3227                 usb_enable_autosuspend(data->udev);
3228
3229         err = hci_register_dev(hdev);
3230         if (err < 0)
3231                 goto out_free_dev;
3232
3233         usb_set_intfdata(intf, data);
3234
3235         return 0;
3236
3237 out_free_dev:
3238         hci_free_dev(hdev);
3239         return err;
3240 }
3241
3242 static void btusb_disconnect(struct usb_interface *intf)
3243 {
3244         struct btusb_data *data = usb_get_intfdata(intf);
3245         struct hci_dev *hdev;
3246
3247         BT_DBG("intf %p", intf);
3248
3249         if (!data)
3250                 return;
3251
3252         hdev = data->hdev;
3253         usb_set_intfdata(data->intf, NULL);
3254
3255         if (data->isoc)
3256                 usb_set_intfdata(data->isoc, NULL);
3257
3258         if (data->diag)
3259                 usb_set_intfdata(data->diag, NULL);
3260
3261         hci_unregister_dev(hdev);
3262
3263         if (intf == data->intf) {
3264                 if (data->isoc)
3265                         usb_driver_release_interface(&btusb_driver, data->isoc);
3266                 if (data->diag)
3267                         usb_driver_release_interface(&btusb_driver, data->diag);
3268         } else if (intf == data->isoc) {
3269                 if (data->diag)
3270                         usb_driver_release_interface(&btusb_driver, data->diag);
3271                 usb_driver_release_interface(&btusb_driver, data->intf);
3272         } else if (intf == data->diag) {
3273                 usb_driver_release_interface(&btusb_driver, data->intf);
3274                 if (data->isoc)
3275                         usb_driver_release_interface(&btusb_driver, data->isoc);
3276         }
3277
3278         if (data->oob_wake_irq)
3279                 device_init_wakeup(&data->udev->dev, false);
3280
3281         hci_free_dev(hdev);
3282 }
3283
3284 #ifdef CONFIG_PM
3285 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
3286 {
3287         struct btusb_data *data = usb_get_intfdata(intf);
3288
3289         BT_DBG("intf %p", intf);
3290
3291         if (data->suspend_count++)
3292                 return 0;
3293
3294         spin_lock_irq(&data->txlock);
3295         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
3296                 set_bit(BTUSB_SUSPENDING, &data->flags);
3297                 spin_unlock_irq(&data->txlock);
3298         } else {
3299                 spin_unlock_irq(&data->txlock);
3300                 data->suspend_count--;
3301                 return -EBUSY;
3302         }
3303
3304         cancel_work_sync(&data->work);
3305
3306         btusb_stop_traffic(data);
3307         usb_kill_anchored_urbs(&data->tx_anchor);
3308
3309         if (data->oob_wake_irq && device_may_wakeup(&data->udev->dev)) {
3310                 set_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
3311                 enable_irq_wake(data->oob_wake_irq);
3312                 enable_irq(data->oob_wake_irq);
3313         }
3314
3315         return 0;
3316 }
3317
3318 static void play_deferred(struct btusb_data *data)
3319 {
3320         struct urb *urb;
3321         int err;
3322
3323         while ((urb = usb_get_from_anchor(&data->deferred))) {
3324                 usb_anchor_urb(urb, &data->tx_anchor);
3325
3326                 err = usb_submit_urb(urb, GFP_ATOMIC);
3327                 if (err < 0) {
3328                         if (err != -EPERM && err != -ENODEV)
3329                                 BT_ERR("%s urb %p submission failed (%d)",
3330                                        data->hdev->name, urb, -err);
3331                         kfree(urb->setup_packet);
3332                         usb_unanchor_urb(urb);
3333                         usb_free_urb(urb);
3334                         break;
3335                 }
3336
3337                 data->tx_in_flight++;
3338                 usb_free_urb(urb);
3339         }
3340
3341         /* Cleanup the rest deferred urbs. */
3342         while ((urb = usb_get_from_anchor(&data->deferred))) {
3343                 kfree(urb->setup_packet);
3344                 usb_free_urb(urb);
3345         }
3346 }
3347
3348 static int btusb_resume(struct usb_interface *intf)
3349 {
3350         struct btusb_data *data = usb_get_intfdata(intf);
3351         struct hci_dev *hdev = data->hdev;
3352         int err = 0;
3353
3354         BT_DBG("intf %p", intf);
3355
3356         if (--data->suspend_count)
3357                 return 0;
3358
3359         /* Disable only if not already disabled (keep it balanced) */
3360         if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
3361                 disable_irq(data->oob_wake_irq);
3362                 disable_irq_wake(data->oob_wake_irq);
3363         }
3364
3365         if (!test_bit(HCI_RUNNING, &hdev->flags))
3366                 goto done;
3367
3368         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
3369                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
3370                 if (err < 0) {
3371                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
3372                         goto failed;
3373                 }
3374         }
3375
3376         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
3377                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
3378                 if (err < 0) {
3379                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
3380                         goto failed;
3381                 }
3382
3383                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
3384         }
3385
3386         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
3387                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
3388                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
3389                 else
3390                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
3391         }
3392
3393         spin_lock_irq(&data->txlock);
3394         play_deferred(data);
3395         clear_bit(BTUSB_SUSPENDING, &data->flags);
3396         spin_unlock_irq(&data->txlock);
3397         schedule_work(&data->work);
3398
3399         return 0;
3400
3401 failed:
3402         usb_scuttle_anchored_urbs(&data->deferred);
3403 done:
3404         spin_lock_irq(&data->txlock);
3405         clear_bit(BTUSB_SUSPENDING, &data->flags);
3406         spin_unlock_irq(&data->txlock);
3407
3408         return err;
3409 }
3410 #endif
3411
3412 static struct usb_driver btusb_driver = {
3413         .name           = "btusb",
3414         .probe          = btusb_probe,
3415         .disconnect     = btusb_disconnect,
3416 #ifdef CONFIG_PM
3417         .suspend        = btusb_suspend,
3418         .resume         = btusb_resume,
3419 #endif
3420         .id_table       = btusb_table,
3421         .supports_autosuspend = 1,
3422         .disable_hub_initiated_lpm = 1,
3423 };
3424
3425 module_usb_driver(btusb_driver);
3426
3427 module_param(disable_scofix, bool, 0644);
3428 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
3429
3430 module_param(force_scofix, bool, 0644);
3431 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
3432
3433 module_param(enable_autosuspend, bool, 0644);
3434 MODULE_PARM_DESC(enable_autosuspend, "Enable USB autosuspend by default");
3435
3436 module_param(reset, bool, 0644);
3437 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
3438
3439 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
3440 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
3441 MODULE_VERSION(VERSION);
3442 MODULE_LICENSE("GPL");