drivers/bluetooth/btusb.c

   1 /*
   2  *
   3  *  Generic Bluetooth USB driver
   4  *
   5  *  Copyright (C) 2005-2008  Marcel Holtmann <marcel@holtmann.org>
   6  *
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, write to the Free Software
  20  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  *
  22  */
  23
  24 #include <linux/dmi.h>
  25 #include <linux/module.h>
  26 #include <linux/usb.h>
  27 #include <linux/usb/quirks.h>
  28 #include <linux/firmware.h>
  29 #include <linux/of_device.h>
  30 #include <linux/of_irq.h>
  31 #include <linux/suspend.h>
  32 #include <asm/unaligned.h>
  33
  34 #include <net/bluetooth/bluetooth.h>
  35 #include <net/bluetooth/hci_core.h>
  36
  37 #include "btintel.h"
  38 #include "btbcm.h"
  39 #include "btrtl.h"
  40
  41 #define VERSION "0.8"
  42
  43 static bool disable_scofix;
  44 static bool force_scofix;
  45 static bool enable_autosuspend = IS_ENABLED(CONFIG_BT_HCIBTUSB_AUTOSUSPEND);
  46
  47 static bool reset = true;
  48
  49 static struct usb_driver btusb_driver;
  50
  51 #define BTUSB_IGNORE            0x01
  52 #define BTUSB_DIGIANSWER        0x02
  53 #define BTUSB_CSR               0x04
  54 #define BTUSB_SNIFFER           0x08
  55 #define BTUSB_BCM92035          0x10
  56 #define BTUSB_BROKEN_ISOC       0x20
  57 #define BTUSB_WRONG_SCO_MTU     0x40
  58 #define BTUSB_ATH3012           0x80
  59 #define BTUSB_INTEL             0x100
  60 #define BTUSB_INTEL_BOOT        0x200
  61 #define BTUSB_BCM_PATCHRAM      0x400
  62 #define BTUSB_MARVELL           0x800
  63 #define BTUSB_SWAVE             0x1000
  64 #define BTUSB_INTEL_NEW         0x2000
  65 #define BTUSB_AMP               0x4000
  66 #define BTUSB_QCA_ROME          0x8000
  67 #define BTUSB_BCM_APPLE         0x10000
  68 #define BTUSB_REALTEK           0x20000
  69 #define BTUSB_BCM2045           0x40000
  70 #define BTUSB_IFNUM_2           0x80000
  71 #define BTUSB_CW6622            0x100000
  72
  73 static const struct usb_device_id btusb_table[] = {
  74         /* Generic Bluetooth USB device */
  75         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  76
  77         /* Generic Bluetooth AMP device */
  78         { USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP },
  79
  80         /* Generic Bluetooth USB interface */
  81         { USB_INTERFACE_INFO(0xe0, 0x01, 0x01) },
  82
  83         /* Apple-specific (Broadcom) devices */
  84         { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01),
  85           .driver_info = BTUSB_BCM_APPLE | BTUSB_IFNUM_2 },
  86
  87         /* MediaTek MT76x0E */
  88         { USB_DEVICE(0x0e8d, 0x763f) },
  89
  90         /* Broadcom SoftSailing reporting vendor specific */
  91         { USB_DEVICE(0x0a5c, 0x21e1) },
  92
  93         /* Apple MacBookPro 7,1 */
  94         { USB_DEVICE(0x05ac, 0x8213) },
  95
  96         /* Apple iMac11,1 */
  97         { USB_DEVICE(0x05ac, 0x8215) },
  98
  99         /* Apple MacBookPro6,2 */
 100         { USB_DEVICE(0x05ac, 0x8218) },
 101
 102         /* Apple MacBookAir3,1, MacBookAir3,2 */
 103         { USB_DEVICE(0x05ac, 0x821b) },
 104
 105         /* Apple MacBookAir4,1 */
 106         { USB_DEVICE(0x05ac, 0x821f) },
 107
 108         /* Apple MacBookPro8,2 */
 109         { USB_DEVICE(0x05ac, 0x821a) },
 110
 111         /* Apple MacMini5,1 */
 112         { USB_DEVICE(0x05ac, 0x8281) },
 113
 114         /* AVM BlueFRITZ! USB v2.0 */
 115         { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE },
 116
 117         /* Bluetooth Ultraport Module from IBM */
 118         { USB_DEVICE(0x04bf, 0x030a) },
 119
 120         /* ALPS Modules with non-standard id */
 121         { USB_DEVICE(0x044e, 0x3001) },
 122         { USB_DEVICE(0x044e, 0x3002) },
 123
 124         /* Ericsson with non-standard id */
 125         { USB_DEVICE(0x0bdb, 0x1002) },
 126
 127         /* Canyon CN-BTU1 with HID interfaces */
 128         { USB_DEVICE(0x0c10, 0x0000) },
 129
 130         /* Broadcom BCM20702A0 */
 131         { USB_DEVICE(0x413c, 0x8197) },
 132
 133         /* Broadcom BCM20702B0 (Dynex/Insignia) */
 134         { USB_DEVICE(0x19ff, 0x0239), .driver_info = BTUSB_BCM_PATCHRAM },
 135
 136         /* Broadcom BCM43142A0 (Foxconn/Lenovo) */
 137         { USB_VENDOR_AND_INTERFACE_INFO(0x105b, 0xff, 0x01, 0x01),
 138           .driver_info = BTUSB_BCM_PATCHRAM },
 139
 140         /* Broadcom BCM920703 (HTC Vive) */
 141         { USB_VENDOR_AND_INTERFACE_INFO(0x0bb4, 0xff, 0x01, 0x01),
 142           .driver_info = BTUSB_BCM_PATCHRAM },
 143
 144         /* Foxconn - Hon Hai */
 145         { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01),
 146           .driver_info = BTUSB_BCM_PATCHRAM },
 147
 148         /* Lite-On Technology - Broadcom based */
 149         { USB_VENDOR_AND_INTERFACE_INFO(0x04ca, 0xff, 0x01, 0x01),
 150           .driver_info = BTUSB_BCM_PATCHRAM },
 151
 152         /* Broadcom devices with vendor specific id */
 153         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
 154           .driver_info = BTUSB_BCM_PATCHRAM },
 155
 156         /* ASUSTek Computer - Broadcom based */
 157         { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01),
 158           .driver_info = BTUSB_BCM_PATCHRAM },
 159
 160         /* Belkin F8065bf - Broadcom based */
 161         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01),
 162           .driver_info = BTUSB_BCM_PATCHRAM },
 163
 164         /* IMC Networks - Broadcom based */
 165         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01),
 166           .driver_info = BTUSB_BCM_PATCHRAM },
 167
 168         /* Dell Computer - Broadcom based  */
 169         { USB_VENDOR_AND_INTERFACE_INFO(0x413c, 0xff, 0x01, 0x01),
 170           .driver_info = BTUSB_BCM_PATCHRAM },
 171
 172         /* Toshiba Corp - Broadcom based */
 173         { USB_VENDOR_AND_INTERFACE_INFO(0x0930, 0xff, 0x01, 0x01),
 174           .driver_info = BTUSB_BCM_PATCHRAM },
 175
 176         /* Intel Bluetooth USB Bootloader (RAM module) */
 177         { USB_DEVICE(0x8087, 0x0a5a),
 178           .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
 179
 180         { }     /* Terminating entry */
 181 };
 182
 183 MODULE_DEVICE_TABLE(usb, btusb_table);
 184
 185 static const struct usb_device_id blacklist_table[] = {
 186         /* CSR BlueCore devices */
 187         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 188
 189         /* Broadcom BCM2033 without firmware */
 190         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 191
 192         /* Broadcom BCM2045 devices */
 193         { USB_DEVICE(0x0a5c, 0x2045), .driver_info = BTUSB_BCM2045 },
 194
 195         /* Atheros 3011 with sflash firmware */
 196         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 197         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 198         { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE },
 199         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 200         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 201         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 202         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 203
 204         /* Atheros AR9285 Malbec with sflash firmware */
 205         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 206
 207         /* Atheros 3012 with sflash firmware */
 208         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 209         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 210         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 211         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 212         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 213         { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
 214         { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
 215         { USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 },
 216         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 217         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 218         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 219         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 220         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 221         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 222         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 223         { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
 224         { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
 225         { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
 226         { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 },
 227         { USB_DEVICE(0x04ca, 0x3018), .driver_info = BTUSB_ATH3012 },
 228         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 229         { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
 230         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 231         { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
 232         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 233         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 234         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 235         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 236         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 237         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
 238         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 239         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 240         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 241         { USB_DEVICE(0x0cf3, 0x817b), .driver_info = BTUSB_ATH3012 },
 242         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 243         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 244         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 245         { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 },
 246         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 247         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 248         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 249         { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 },
 250         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 251         { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
 252         { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
 253         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
 254         { USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 },
 255         { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
 256         { USB_DEVICE(0x13d3, 0x3487), .driver_info = BTUSB_ATH3012 },
 257         { USB_DEVICE(0x13d3, 0x3490), .driver_info = BTUSB_ATH3012 },
 258
 259         /* Atheros AR5BBU12 with sflash firmware */
 260         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 261
 262         /* Atheros AR5BBU12 with sflash firmware */
 263         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 264         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 265
 266         /* QCA ROME chipset */
 267         { USB_DEVICE(0x0cf3, 0x535b), .driver_info = BTUSB_QCA_ROME },
 268         { USB_DEVICE(0x0cf3, 0xe007), .driver_info = BTUSB_QCA_ROME },
 269         { USB_DEVICE(0x0cf3, 0xe009), .driver_info = BTUSB_QCA_ROME },
 270         { USB_DEVICE(0x0cf3, 0xe010), .driver_info = BTUSB_QCA_ROME },
 271         { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME },
 272         { USB_DEVICE(0x0cf3, 0xe301), .driver_info = BTUSB_QCA_ROME },
 273         { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME },
 274         { USB_DEVICE(0x0489, 0xe092), .driver_info = BTUSB_QCA_ROME },
 275         { USB_DEVICE(0x0489, 0xe09f), .driver_info = BTUSB_QCA_ROME },
 276         { USB_DEVICE(0x0489, 0xe0a2), .driver_info = BTUSB_QCA_ROME },
 277         { USB_DEVICE(0x04ca, 0x3011), .driver_info = BTUSB_QCA_ROME },
 278         { USB_DEVICE(0x04ca, 0x3015), .driver_info = BTUSB_QCA_ROME },
 279         { USB_DEVICE(0x04ca, 0x3016), .driver_info = BTUSB_QCA_ROME },
 280         { USB_DEVICE(0x04ca, 0x301a), .driver_info = BTUSB_QCA_ROME },
 281         { USB_DEVICE(0x13d3, 0x3496), .driver_info = BTUSB_QCA_ROME },
 282
 283         /* Broadcom BCM2035 */
 284         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 285         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 286         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 287
 288         /* Broadcom BCM2045 */
 289         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 290         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 291
 292         /* IBM/Lenovo ThinkPad with Broadcom chip */
 293         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 294         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 295
 296         /* HP laptop with Broadcom chip */
 297         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 298
 299         /* Dell laptop with Broadcom chip */
 300         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 301
 302         /* Dell Wireless 370 and 410 devices */
 303         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 304         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 305
 306         /* Belkin F8T012 and F8T013 devices */
 307         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 308         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 309
 310         /* Asus WL-BTD202 device */
 311         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 312
 313         /* Kensington Bluetooth USB adapter */
 314         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 315
 316         /* RTX Telecom based adapters with buggy SCO support */
 317         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 318         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 319
 320         /* CONWISE Technology based adapters with buggy SCO support */
 321         { USB_DEVICE(0x0e5e, 0x6622),
 322           .driver_info = BTUSB_BROKEN_ISOC | BTUSB_CW6622},
 323
 324         /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
 325         { USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE },
 326
 327         /* Digianswer devices */
 328         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 329         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 330
 331         /* CSR BlueCore Bluetooth Sniffer */
 332         { USB_DEVICE(0x0a12, 0x0002),
 333           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 334
 335         /* Frontline ComProbe Bluetooth Sniffer */
 336         { USB_DEVICE(0x16d3, 0x0002),
 337           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 338
 339         /* Marvell Bluetooth devices */
 340         { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
 341         { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
 342         { USB_DEVICE(0x1286, 0x204e), .driver_info = BTUSB_MARVELL },
 343
 344         /* Intel Bluetooth devices */
 345         { USB_DEVICE(0x8087, 0x0025), .driver_info = BTUSB_INTEL_NEW },
 346         { USB_DEVICE(0x8087, 0x0026), .driver_info = BTUSB_INTEL_NEW },
 347         { USB_DEVICE(0x8087, 0x0029), .driver_info = BTUSB_INTEL_NEW },
 348         { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR },
 349         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 350         { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
 351         { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_NEW },
 352         { USB_DEVICE(0x8087, 0x0aa7), .driver_info = BTUSB_INTEL },
 353         { USB_DEVICE(0x8087, 0x0aaa), .driver_info = BTUSB_INTEL_NEW },
 354
 355         /* Other Intel Bluetooth devices */
 356         { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01),
 357           .driver_info = BTUSB_IGNORE },
 358
 359         /* Realtek Bluetooth devices */
 360         { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01),
 361           .driver_info = BTUSB_REALTEK },
 362
 363         /* Additional Realtek 8723AE Bluetooth devices */
 364         { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK },
 365         { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK },
 366
 367         /* Additional Realtek 8723BE Bluetooth devices */
 368         { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK },
 369         { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK },
 370         { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
 371         { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
 372         { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },
 373         { USB_DEVICE(0x13d3, 0x3494), .driver_info = BTUSB_REALTEK },
 374
 375         /* Additional Realtek 8723BU Bluetooth devices */
 376         { USB_DEVICE(0x7392, 0xa611), .driver_info = BTUSB_REALTEK },
 377
 378         /* Additional Realtek 8723DE Bluetooth devices */
 379         { USB_DEVICE(0x0bda, 0xb009), .driver_info = BTUSB_REALTEK },
 380         { USB_DEVICE(0x2ff8, 0xb011), .driver_info = BTUSB_REALTEK },
 381
 382         /* Additional Realtek 8821AE Bluetooth devices */
 383         { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
 384         { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },
 385         { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK },
 386         { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK },
 387         { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK },
 388
 389         /* Additional Realtek 8822BE Bluetooth devices */
 390         { USB_DEVICE(0x13d3, 0x3526), .driver_info = BTUSB_REALTEK },
 391         { USB_DEVICE(0x0b05, 0x185c), .driver_info = BTUSB_REALTEK },
 392
 393         /* Silicon Wave based devices */
 394         { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE },
 395
 396         { }     /* Terminating entry */
 397 };
 398
 399 /* The Bluetooth USB module build into some devices needs to be reset on resume,
 400  * this is a problem with the platform (likely shutting off all power) not with
 401  * the module itself. So we use a DMI list to match known broken platforms.
 402  */
 403 static const struct dmi_system_id btusb_needs_reset_resume_table[] = {
 404         {
 405                 /* Dell OptiPlex 3060 (QCA ROME device 0cf3:e007) */
 406                 .matches = {
 407                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 408                         DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 3060"),
 409                 },
 410         },
 411         {
 412                 /* Dell XPS 9360 (QCA ROME device 0cf3:e300) */
 413                 .matches = {
 414                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 415                         DMI_MATCH(DMI_PRODUCT_NAME, "XPS 13 9360"),
 416                 },
 417         },
 418         {
 419                 /* Dell Inspiron 5565 (QCA ROME device 0cf3:e009) */
 420                 .matches = {
 421                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 422                         DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5565"),
 423                 },
 424         },
 425         {}
 426 };
 427
 428 #define BTUSB_MAX_ISOC_FRAMES   10
 429
 430 #define BTUSB_INTR_RUNNING      0
 431 #define BTUSB_BULK_RUNNING      1
 432 #define BTUSB_ISOC_RUNNING      2
 433 #define BTUSB_SUSPENDING        3
 434 #define BTUSB_DID_ISO_RESUME    4
 435 #define BTUSB_BOOTLOADER        5
 436 #define BTUSB_DOWNLOADING       6
 437 #define BTUSB_FIRMWARE_LOADED   7
 438 #define BTUSB_FIRMWARE_FAILED   8
 439 #define BTUSB_BOOTING           9
 440 #define BTUSB_DIAG_RUNNING      10
 441 #define BTUSB_OOB_WAKE_ENABLED  11
 442
 443 struct btusb_data {
 444         struct hci_dev       *hdev;
 445         struct usb_device    *udev;
 446         struct usb_interface *intf;
 447         struct usb_interface *isoc;
 448         struct usb_interface *diag;
 449         unsigned isoc_ifnum;
 450
 451         unsigned long flags;
 452
 453         struct work_struct work;
 454         struct work_struct waker;
 455
 456         struct usb_anchor deferred;
 457         struct usb_anchor tx_anchor;
 458         int tx_in_flight;
 459         spinlock_t txlock;
 460
 461         struct usb_anchor intr_anchor;
 462         struct usb_anchor bulk_anchor;
 463         struct usb_anchor isoc_anchor;
 464         struct usb_anchor diag_anchor;
 465         spinlock_t rxlock;
 466
 467         struct sk_buff *evt_skb;
 468         struct sk_buff *acl_skb;
 469         struct sk_buff *sco_skb;
 470
 471         struct usb_endpoint_descriptor *intr_ep;
 472         struct usb_endpoint_descriptor *bulk_tx_ep;
 473         struct usb_endpoint_descriptor *bulk_rx_ep;
 474         struct usb_endpoint_descriptor *isoc_tx_ep;
 475         struct usb_endpoint_descriptor *isoc_rx_ep;
 476         struct usb_endpoint_descriptor *diag_tx_ep;
 477         struct usb_endpoint_descriptor *diag_rx_ep;
 478
 479         __u8 cmdreq_type;
 480         __u8 cmdreq;
 481
 482         unsigned int sco_num;
 483         int isoc_altsetting;
 484         int suspend_count;
 485
 486         int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
 487         int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
 488
 489         int (*setup_on_usb)(struct hci_dev *hdev);
 490
 491         int oob_wake_irq;   /* irq for out-of-band wake-on-bt */
 492 };
 493
 494 static inline void btusb_free_frags(struct btusb_data *data)
 495 {
 496         unsigned long flags;
 497
 498         spin_lock_irqsave(&data->rxlock, flags);
 499
 500         kfree_skb(data->evt_skb);
 501         data->evt_skb = NULL;
 502
 503         kfree_skb(data->acl_skb);
 504         data->acl_skb = NULL;
 505
 506         kfree_skb(data->sco_skb);
 507         data->sco_skb = NULL;
 508
 509         spin_unlock_irqrestore(&data->rxlock, flags);
 510 }
 511
 512 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
 513 {
 514         struct sk_buff *skb;
 515         unsigned long flags;
 516         int err = 0;
 517
 518         spin_lock_irqsave(&data->rxlock, flags);
 519         skb = data->evt_skb;
 520
 521         while (count) {
 522                 int len;
 523
 524                 if (!skb) {
 525                         skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
 526                         if (!skb) {
 527                                 err = -ENOMEM;
 528                                 break;
 529                         }
 530
 531                         hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
 532                         hci_skb_expect(skb) = HCI_EVENT_HDR_SIZE;
 533                 }
 534
 535                 len = min_t(uint, hci_skb_expect(skb), count);
 536                 skb_put_data(skb, buffer, len);
 537
 538                 count -= len;
 539                 buffer += len;
 540                 hci_skb_expect(skb) -= len;
 541
 542                 if (skb->len == HCI_EVENT_HDR_SIZE) {
 543                         /* Complete event header */
 544                         hci_skb_expect(skb) = hci_event_hdr(skb)->plen;
 545
 546                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 547                                 kfree_skb(skb);
 548                                 skb = NULL;
 549
 550                                 err = -EILSEQ;
 551                                 break;
 552                         }
 553                 }
 554
 555                 if (!hci_skb_expect(skb)) {
 556                         /* Complete frame */
 557                         data->recv_event(data->hdev, skb);
 558                         skb = NULL;
 559                 }
 560         }
 561
 562         data->evt_skb = skb;
 563         spin_unlock_irqrestore(&data->rxlock, flags);
 564
 565         return err;
 566 }
 567
 568 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
 569 {
 570         struct sk_buff *skb;
 571         unsigned long flags;
 572         int err = 0;
 573
 574         spin_lock_irqsave(&data->rxlock, flags);
 575         skb = data->acl_skb;
 576
 577         while (count) {
 578                 int len;
 579
 580                 if (!skb) {
 581                         skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
 582                         if (!skb) {
 583                                 err = -ENOMEM;
 584                                 break;
 585                         }
 586
 587                         hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT;
 588                         hci_skb_expect(skb) = HCI_ACL_HDR_SIZE;
 589                 }
 590
 591                 len = min_t(uint, hci_skb_expect(skb), count);
 592                 skb_put_data(skb, buffer, len);
 593
 594                 count -= len;
 595                 buffer += len;
 596                 hci_skb_expect(skb) -= len;
 597
 598                 if (skb->len == HCI_ACL_HDR_SIZE) {
 599                         __le16 dlen = hci_acl_hdr(skb)->dlen;
 600
 601                         /* Complete ACL header */
 602                         hci_skb_expect(skb) = __le16_to_cpu(dlen);
 603
 604                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 605                                 kfree_skb(skb);
 606                                 skb = NULL;
 607
 608                                 err = -EILSEQ;
 609                                 break;
 610                         }
 611                 }
 612
 613                 if (!hci_skb_expect(skb)) {
 614                         /* Complete frame */
 615                         hci_recv_frame(data->hdev, skb);
 616                         skb = NULL;
 617                 }
 618         }
 619
 620         data->acl_skb = skb;
 621         spin_unlock_irqrestore(&data->rxlock, flags);
 622
 623         return err;
 624 }
 625
 626 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
 627 {
 628         struct sk_buff *skb;
 629         unsigned long flags;
 630         int err = 0;
 631
 632         spin_lock_irqsave(&data->rxlock, flags);
 633         skb = data->sco_skb;
 634
 635         while (count) {
 636                 int len;
 637
 638                 if (!skb) {
 639                         skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
 640                         if (!skb) {
 641                                 err = -ENOMEM;
 642                                 break;
 643                         }
 644
 645                         hci_skb_pkt_type(skb) = HCI_SCODATA_PKT;
 646                         hci_skb_expect(skb) = HCI_SCO_HDR_SIZE;
 647                 }
 648
 649                 len = min_t(uint, hci_skb_expect(skb), count);
 650                 skb_put_data(skb, buffer, len);
 651
 652                 count -= len;
 653                 buffer += len;
 654                 hci_skb_expect(skb) -= len;
 655
 656                 if (skb->len == HCI_SCO_HDR_SIZE) {
 657                         /* Complete SCO header */
 658                         hci_skb_expect(skb) = hci_sco_hdr(skb)->dlen;
 659
 660                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 661                                 kfree_skb(skb);
 662                                 skb = NULL;
 663
 664                                 err = -EILSEQ;
 665                                 break;
 666                         }
 667                 }
 668
 669                 if (!hci_skb_expect(skb)) {
 670                         /* Complete frame */
 671                         hci_recv_frame(data->hdev, skb);
 672                         skb = NULL;
 673                 }
 674         }
 675
 676         data->sco_skb = skb;
 677         spin_unlock_irqrestore(&data->rxlock, flags);
 678
 679         return err;
 680 }
 681
 682 static void btusb_intr_complete(struct urb *urb)
 683 {
 684         struct hci_dev *hdev = urb->context;
 685         struct btusb_data *data = hci_get_drvdata(hdev);
 686         int err;
 687
 688         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 689                urb->actual_length);
 690
 691         if (!test_bit(HCI_RUNNING, &hdev->flags))
 692                 return;
 693
 694         if (urb->status == 0) {
 695                 hdev->stat.byte_rx += urb->actual_length;
 696
 697                 if (btusb_recv_intr(data, urb->transfer_buffer,
 698                                     urb->actual_length) < 0) {
 699                         bt_dev_err(hdev, "corrupted event packet");
 700                         hdev->stat.err_rx++;
 701                 }
 702         } else if (urb->status == -ENOENT) {
 703                 /* Avoid suspend failed when usb_kill_urb */
 704                 return;
 705         }
 706
 707         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 708                 return;
 709
 710         usb_mark_last_busy(data->udev);
 711         usb_anchor_urb(urb, &data->intr_anchor);
 712
 713         err = usb_submit_urb(urb, GFP_ATOMIC);
 714         if (err < 0) {
 715                 /* -EPERM: urb is being killed;
 716                  * -ENODEV: device got disconnected
 717                  */
 718                 if (err != -EPERM && err != -ENODEV)
 719                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
 720                                    urb, -err);
 721                 usb_unanchor_urb(urb);
 722         }
 723 }
 724
 725 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 726 {
 727         struct btusb_data *data = hci_get_drvdata(hdev);
 728         struct urb *urb;
 729         unsigned char *buf;
 730         unsigned int pipe;
 731         int err, size;
 732
 733         BT_DBG("%s", hdev->name);
 734
 735         if (!data->intr_ep)
 736                 return -ENODEV;
 737
 738         urb = usb_alloc_urb(0, mem_flags);
 739         if (!urb)
 740                 return -ENOMEM;
 741
 742         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 743
 744         buf = kmalloc(size, mem_flags);
 745         if (!buf) {
 746                 usb_free_urb(urb);
 747                 return -ENOMEM;
 748         }
 749
 750         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 751
 752         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 753                          btusb_intr_complete, hdev, data->intr_ep->bInterval);
 754
 755         urb->transfer_flags |= URB_FREE_BUFFER;
 756
 757         usb_anchor_urb(urb, &data->intr_anchor);
 758
 759         err = usb_submit_urb(urb, mem_flags);
 760         if (err < 0) {
 761                 if (err != -EPERM && err != -ENODEV)
 762                         bt_dev_err(hdev, "urb %p submission failed (%d)",
 763                                    urb, -err);
 764                 usb_unanchor_urb(urb);
 765         }
 766
 767         usb_free_urb(urb);
 768
 769         return err;
 770 }
 771
 772 static void btusb_bulk_complete(struct urb *urb)
 773 {
 774         struct hci_dev *hdev = urb->context;
 775         struct btusb_data *data = hci_get_drvdata(hdev);
 776         int err;
 777
 778         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 779                urb->actual_length);
 780
 781         if (!test_bit(HCI_RUNNING, &hdev->flags))
 782                 return;
 783
 784         if (urb->status == 0) {
 785                 hdev->stat.byte_rx += urb->actual_length;
 786
 787                 if (data->recv_bulk(data, urb->transfer_buffer,
 788                                     urb->actual_length) < 0) {
 789                         bt_dev_err(hdev, "corrupted ACL packet");
 790                         hdev->stat.err_rx++;
 791                 }
 792         } else if (urb->status == -ENOENT) {
 793                 /* Avoid suspend failed when usb_kill_urb */
 794                 return;
 795         }
 796
 797         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 798                 return;
 799
 800         usb_anchor_urb(urb, &data->bulk_anchor);
 801         usb_mark_last_busy(data->udev);
 802
 803         err = usb_submit_urb(urb, GFP_ATOMIC);
 804         if (err < 0) {
 805                 /* -EPERM: urb is being killed;
 806                  * -ENODEV: device got disconnected
 807                  */
 808                 if (err != -EPERM && err != -ENODEV)
 809                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
 810                                    urb, -err);
 811                 usb_unanchor_urb(urb);
 812         }
 813 }
 814
 815 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 816 {
 817         struct btusb_data *data = hci_get_drvdata(hdev);
 818         struct urb *urb;
 819         unsigned char *buf;
 820         unsigned int pipe;
 821         int err, size = HCI_MAX_FRAME_SIZE;
 822
 823         BT_DBG("%s", hdev->name);
 824
 825         if (!data->bulk_rx_ep)
 826                 return -ENODEV;
 827
 828         urb = usb_alloc_urb(0, mem_flags);
 829         if (!urb)
 830                 return -ENOMEM;
 831
 832         buf = kmalloc(size, mem_flags);
 833         if (!buf) {
 834                 usb_free_urb(urb);
 835                 return -ENOMEM;
 836         }
 837
 838         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 839
 840         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
 841                           btusb_bulk_complete, hdev);
 842
 843         urb->transfer_flags |= URB_FREE_BUFFER;
 844
 845         usb_mark_last_busy(data->udev);
 846         usb_anchor_urb(urb, &data->bulk_anchor);
 847
 848         err = usb_submit_urb(urb, mem_flags);
 849         if (err < 0) {
 850                 if (err != -EPERM && err != -ENODEV)
 851                         bt_dev_err(hdev, "urb %p submission failed (%d)",
 852                                    urb, -err);
 853                 usb_unanchor_urb(urb);
 854         }
 855
 856         usb_free_urb(urb);
 857
 858         return err;
 859 }
 860
 861 static void btusb_isoc_complete(struct urb *urb)
 862 {
 863         struct hci_dev *hdev = urb->context;
 864         struct btusb_data *data = hci_get_drvdata(hdev);
 865         int i, err;
 866
 867         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 868                urb->actual_length);
 869
 870         if (!test_bit(HCI_RUNNING, &hdev->flags))
 871                 return;
 872
 873         if (urb->status == 0) {
 874                 for (i = 0; i < urb->number_of_packets; i++) {
 875                         unsigned int offset = urb->iso_frame_desc[i].offset;
 876                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 877
 878                         if (urb->iso_frame_desc[i].status)
 879                                 continue;
 880
 881                         hdev->stat.byte_rx += length;
 882
 883                         if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
 884                                             length) < 0) {
 885                                 bt_dev_err(hdev, "corrupted SCO packet");
 886                                 hdev->stat.err_rx++;
 887                         }
 888                 }
 889         } else if (urb->status == -ENOENT) {
 890                 /* Avoid suspend failed when usb_kill_urb */
 891                 return;
 892         }
 893
 894         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 895                 return;
 896
 897         usb_anchor_urb(urb, &data->isoc_anchor);
 898
 899         err = usb_submit_urb(urb, GFP_ATOMIC);
 900         if (err < 0) {
 901                 /* -EPERM: urb is being killed;
 902                  * -ENODEV: device got disconnected
 903                  */
 904                 if (err != -EPERM && err != -ENODEV)
 905                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
 906                                    urb, -err);
 907                 usb_unanchor_urb(urb);
 908         }
 909 }
 910
 911 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 912 {
 913         int i, offset = 0;
 914
 915         BT_DBG("len %d mtu %d", len, mtu);
 916
 917         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 918                                         i++, offset += mtu, len -= mtu) {
 919                 urb->iso_frame_desc[i].offset = offset;
 920                 urb->iso_frame_desc[i].length = mtu;
 921         }
 922
 923         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 924                 urb->iso_frame_desc[i].offset = offset;
 925                 urb->iso_frame_desc[i].length = len;
 926                 i++;
 927         }
 928
 929         urb->number_of_packets = i;
 930 }
 931
 932 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 933 {
 934         struct btusb_data *data = hci_get_drvdata(hdev);
 935         struct urb *urb;
 936         unsigned char *buf;
 937         unsigned int pipe;
 938         int err, size;
 939
 940         BT_DBG("%s", hdev->name);
 941
 942         if (!data->isoc_rx_ep)
 943                 return -ENODEV;
 944
 945         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 946         if (!urb)
 947                 return -ENOMEM;
 948
 949         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 950                                                 BTUSB_MAX_ISOC_FRAMES;
 951
 952         buf = kmalloc(size, mem_flags);
 953         if (!buf) {
 954                 usb_free_urb(urb);
 955                 return -ENOMEM;
 956         }
 957
 958         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 959
 960         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 961                          hdev, data->isoc_rx_ep->bInterval);
 962
 963         urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
 964
 965         __fill_isoc_descriptor(urb, size,
 966                                le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 967
 968         usb_anchor_urb(urb, &data->isoc_anchor);
 969
 970         err = usb_submit_urb(urb, mem_flags);
 971         if (err < 0) {
 972                 if (err != -EPERM && err != -ENODEV)
 973                         bt_dev_err(hdev, "urb %p submission failed (%d)",
 974                                    urb, -err);
 975                 usb_unanchor_urb(urb);
 976         }
 977
 978         usb_free_urb(urb);
 979
 980         return err;
 981 }
 982
 983 static void btusb_diag_complete(struct urb *urb)
 984 {
 985         struct hci_dev *hdev = urb->context;
 986         struct btusb_data *data = hci_get_drvdata(hdev);
 987         int err;
 988
 989         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 990                urb->actual_length);
 991
 992         if (urb->status == 0) {
 993                 struct sk_buff *skb;
 994
 995                 skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC);
 996                 if (skb) {
 997                         skb_put_data(skb, urb->transfer_buffer,
 998                                      urb->actual_length);
 999                         hci_recv_diag(hdev, skb);
1000                 }
1001         } else if (urb->status == -ENOENT) {
1002                 /* Avoid suspend failed when usb_kill_urb */
1003                 return;
1004         }
1005
1006         if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags))
1007                 return;
1008
1009         usb_anchor_urb(urb, &data->diag_anchor);
1010         usb_mark_last_busy(data->udev);
1011
1012         err = usb_submit_urb(urb, GFP_ATOMIC);
1013         if (err < 0) {
1014                 /* -EPERM: urb is being killed;
1015                  * -ENODEV: device got disconnected
1016                  */
1017                 if (err != -EPERM && err != -ENODEV)
1018                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1019                                    urb, -err);
1020                 usb_unanchor_urb(urb);
1021         }
1022 }
1023
1024 static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags)
1025 {
1026         struct btusb_data *data = hci_get_drvdata(hdev);
1027         struct urb *urb;
1028         unsigned char *buf;
1029         unsigned int pipe;
1030         int err, size = HCI_MAX_FRAME_SIZE;
1031
1032         BT_DBG("%s", hdev->name);
1033
1034         if (!data->diag_rx_ep)
1035                 return -ENODEV;
1036
1037         urb = usb_alloc_urb(0, mem_flags);
1038         if (!urb)
1039                 return -ENOMEM;
1040
1041         buf = kmalloc(size, mem_flags);
1042         if (!buf) {
1043                 usb_free_urb(urb);
1044                 return -ENOMEM;
1045         }
1046
1047         pipe = usb_rcvbulkpipe(data->udev, data->diag_rx_ep->bEndpointAddress);
1048
1049         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
1050                           btusb_diag_complete, hdev);
1051
1052         urb->transfer_flags |= URB_FREE_BUFFER;
1053
1054         usb_mark_last_busy(data->udev);
1055         usb_anchor_urb(urb, &data->diag_anchor);
1056
1057         err = usb_submit_urb(urb, mem_flags);
1058         if (err < 0) {
1059                 if (err != -EPERM && err != -ENODEV)
1060                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1061                                    urb, -err);
1062                 usb_unanchor_urb(urb);
1063         }
1064
1065         usb_free_urb(urb);
1066
1067         return err;
1068 }
1069
1070 static void btusb_tx_complete(struct urb *urb)
1071 {
1072         struct sk_buff *skb = urb->context;
1073         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1074         struct btusb_data *data = hci_get_drvdata(hdev);
1075         unsigned long flags;
1076
1077         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1078                urb->actual_length);
1079
1080         if (!test_bit(HCI_RUNNING, &hdev->flags))
1081                 goto done;
1082
1083         if (!urb->status)
1084                 hdev->stat.byte_tx += urb->transfer_buffer_length;
1085         else
1086                 hdev->stat.err_tx++;
1087
1088 done:
1089         spin_lock_irqsave(&data->txlock, flags);
1090         data->tx_in_flight--;
1091         spin_unlock_irqrestore(&data->txlock, flags);
1092
1093         kfree(urb->setup_packet);
1094
1095         kfree_skb(skb);
1096 }
1097
1098 static void btusb_isoc_tx_complete(struct urb *urb)
1099 {
1100         struct sk_buff *skb = urb->context;
1101         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1102
1103         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1104                urb->actual_length);
1105
1106         if (!test_bit(HCI_RUNNING, &hdev->flags))
1107                 goto done;
1108
1109         if (!urb->status)
1110                 hdev->stat.byte_tx += urb->transfer_buffer_length;
1111         else
1112                 hdev->stat.err_tx++;
1113
1114 done:
1115         kfree(urb->setup_packet);
1116
1117         kfree_skb(skb);
1118 }
1119
1120 static int btusb_open(struct hci_dev *hdev)
1121 {
1122         struct btusb_data *data = hci_get_drvdata(hdev);
1123         int err;
1124
1125         BT_DBG("%s", hdev->name);
1126
1127         err = usb_autopm_get_interface(data->intf);
1128         if (err < 0)
1129                 return err;
1130
1131         /* Patching USB firmware files prior to starting any URBs of HCI path
1132          * It is more safe to use USB bulk channel for downloading USB patch
1133          */
1134         if (data->setup_on_usb) {
1135                 err = data->setup_on_usb(hdev);
1136                 if (err < 0)
1137                         return err;
1138         }
1139
1140         data->intf->needs_remote_wakeup = 1;
1141         /* device specific wakeup source enabled and required for USB
1142          * remote wakeup while host is suspended
1143          */
1144         device_wakeup_enable(&data->udev->dev);
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         usb_autopm_put_interface(data->intf);
1174         return err;
1175 }
1176
1177 static void btusb_stop_traffic(struct btusb_data *data)
1178 {
1179         usb_kill_anchored_urbs(&data->intr_anchor);
1180         usb_kill_anchored_urbs(&data->bulk_anchor);
1181         usb_kill_anchored_urbs(&data->isoc_anchor);
1182         usb_kill_anchored_urbs(&data->diag_anchor);
1183 }
1184
1185 static int btusb_close(struct hci_dev *hdev)
1186 {
1187         struct btusb_data *data = hci_get_drvdata(hdev);
1188         int err;
1189
1190         BT_DBG("%s", hdev->name);
1191
1192         cancel_work_sync(&data->work);
1193         cancel_work_sync(&data->waker);
1194
1195         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1196         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1197         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1198         clear_bit(BTUSB_DIAG_RUNNING, &data->flags);
1199
1200         btusb_stop_traffic(data);
1201         btusb_free_frags(data);
1202
1203         err = usb_autopm_get_interface(data->intf);
1204         if (err < 0)
1205                 goto failed;
1206
1207         data->intf->needs_remote_wakeup = 0;
1208         device_wakeup_disable(&data->udev->dev);
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                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
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 = request_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), "intel/ibt-hw-%x.%x.bseq",
1615                          ver->hw_platform, ver->hw_variant);
1616                 if (request_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                 wake_up_bit(&data->flags, BTUSB_BOOTING);
1941 }
1942
1943 static void btusb_intel_secure_send_result(struct btusb_data *data,
1944                                            const void *ptr, unsigned int len)
1945 {
1946         const struct intel_secure_send_result *evt = ptr;
1947
1948         if (len != sizeof(*evt))
1949                 return;
1950
1951         if (evt->result)
1952                 set_bit(BTUSB_FIRMWARE_FAILED, &data->flags);
1953
1954         if (test_and_clear_bit(BTUSB_DOWNLOADING, &data->flags) &&
1955             test_bit(BTUSB_FIRMWARE_LOADED, &data->flags))
1956                 wake_up_bit(&data->flags, BTUSB_DOWNLOADING);
1957 }
1958
1959 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
1960 {
1961         struct btusb_data *data = hci_get_drvdata(hdev);
1962
1963         if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1964                 struct hci_event_hdr *hdr = (void *)skb->data;
1965
1966                 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
1967                     hdr->plen > 0) {
1968                         const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
1969                         unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
1970
1971                         switch (skb->data[2]) {
1972                         case 0x02:
1973                                 /* When switching to the operational firmware
1974                                  * the device sends a vendor specific event
1975                                  * indicating that the bootup completed.
1976                                  */
1977                                 btusb_intel_bootup(data, ptr, len);
1978                                 break;
1979                         case 0x06:
1980                                 /* When the firmware loading completes the
1981                                  * device sends out a vendor specific event
1982                                  * indicating the result of the firmware
1983                                  * loading.
1984                                  */
1985                                 btusb_intel_secure_send_result(data, ptr, len);
1986                                 break;
1987                         }
1988                 }
1989         }
1990
1991         return hci_recv_frame(hdev, skb);
1992 }
1993
1994 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
1995 {
1996         struct btusb_data *data = hci_get_drvdata(hdev);
1997         struct urb *urb;
1998
1999         BT_DBG("%s", hdev->name);
2000
2001         switch (hci_skb_pkt_type(skb)) {
2002         case HCI_COMMAND_PKT:
2003                 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
2004                         struct hci_command_hdr *cmd = (void *)skb->data;
2005                         __u16 opcode = le16_to_cpu(cmd->opcode);
2006
2007                         /* When in bootloader mode and the command 0xfc09
2008                          * is received, it needs to be send down the
2009                          * bulk endpoint. So allocate a bulk URB instead.
2010                          */
2011                         if (opcode == 0xfc09)
2012                                 urb = alloc_bulk_urb(hdev, skb);
2013                         else
2014                                 urb = alloc_ctrl_urb(hdev, skb);
2015
2016                         /* When the 0xfc01 command is issued to boot into
2017                          * the operational firmware, it will actually not
2018                          * send a command complete event. To keep the flow
2019                          * control working inject that event here.
2020                          */
2021                         if (opcode == 0xfc01)
2022                                 inject_cmd_complete(hdev, opcode);
2023                 } else {
2024                         urb = alloc_ctrl_urb(hdev, skb);
2025                 }
2026                 if (IS_ERR(urb))
2027                         return PTR_ERR(urb);
2028
2029                 hdev->stat.cmd_tx++;
2030                 return submit_or_queue_tx_urb(hdev, urb);
2031
2032         case HCI_ACLDATA_PKT:
2033                 urb = alloc_bulk_urb(hdev, skb);
2034                 if (IS_ERR(urb))
2035                         return PTR_ERR(urb);
2036
2037                 hdev->stat.acl_tx++;
2038                 return submit_or_queue_tx_urb(hdev, urb);
2039
2040         case HCI_SCODATA_PKT:
2041                 if (hci_conn_num(hdev, SCO_LINK) < 1)
2042                         return -ENODEV;
2043
2044                 urb = alloc_isoc_urb(hdev, skb);
2045                 if (IS_ERR(urb))
2046                         return PTR_ERR(urb);
2047
2048                 hdev->stat.sco_tx++;
2049                 return submit_tx_urb(hdev, urb);
2050         }
2051
2052         return -EILSEQ;
2053 }
2054
2055 static bool btusb_setup_intel_new_get_fw_name(struct intel_version *ver,
2056                                              struct intel_boot_params *params,
2057                                              char *fw_name, size_t len,
2058                                              const char *suffix)
2059 {
2060         switch (ver->hw_variant) {
2061         case 0x0b:      /* SfP */
2062         case 0x0c:      /* WsP */
2063                 snprintf(fw_name, len, "intel/ibt-%u-%u.%s",
2064                         le16_to_cpu(ver->hw_variant),
2065                         le16_to_cpu(params->dev_revid),
2066                         suffix);
2067                 break;
2068         case 0x11:      /* JfP */
2069         case 0x12:      /* ThP */
2070         case 0x13:      /* HrP */
2071         case 0x14:      /* CcP */
2072                 snprintf(fw_name, len, "intel/ibt-%u-%u-%u.%s",
2073                         le16_to_cpu(ver->hw_variant),
2074                         le16_to_cpu(ver->hw_revision),
2075                         le16_to_cpu(ver->fw_revision),
2076                         suffix);
2077                 break;
2078         default:
2079                 return false;
2080         }
2081         return true;
2082 }
2083
2084 static int btusb_setup_intel_new(struct hci_dev *hdev)
2085 {
2086         struct btusb_data *data = hci_get_drvdata(hdev);
2087         struct intel_version ver;
2088         struct intel_boot_params params;
2089         const struct firmware *fw;
2090         u32 boot_param;
2091         char fwname[64];
2092         ktime_t calltime, delta, rettime;
2093         unsigned long long duration;
2094         int err;
2095
2096         BT_DBG("%s", hdev->name);
2097
2098         /* Set the default boot parameter to 0x0 and it is updated to
2099          * SKU specific boot parameter after reading Intel_Write_Boot_Params
2100          * command while downloading the firmware.
2101          */
2102         boot_param = 0x00000000;
2103
2104         calltime = ktime_get();
2105
2106         /* Read the Intel version information to determine if the device
2107          * is in bootloader mode or if it already has operational firmware
2108          * loaded.
2109          */
2110         err = btintel_read_version(hdev, &ver);
2111         if (err)
2112                 return err;
2113
2114         /* The hardware platform number has a fixed value of 0x37 and
2115          * for now only accept this single value.
2116          */
2117         if (ver.hw_platform != 0x37) {
2118                 bt_dev_err(hdev, "Unsupported Intel hardware platform (%u)",
2119                            ver.hw_platform);
2120                 return -EINVAL;
2121         }
2122
2123         /* Check for supported iBT hardware variants of this firmware
2124          * loading method.
2125          *
2126          * This check has been put in place to ensure correct forward
2127          * compatibility options when newer hardware variants come along.
2128          */
2129         switch (ver.hw_variant) {
2130         case 0x0b:      /* SfP */
2131         case 0x0c:      /* WsP */
2132         case 0x11:      /* JfP */
2133         case 0x12:      /* ThP */
2134         case 0x13:      /* HrP */
2135         case 0x14:      /* CcP */
2136                 break;
2137         default:
2138                 bt_dev_err(hdev, "Unsupported Intel hardware variant (%u)",
2139                            ver.hw_variant);
2140                 return -EINVAL;
2141         }
2142
2143         btintel_version_info(hdev, &ver);
2144
2145         /* The firmware variant determines if the device is in bootloader
2146          * mode or is running operational firmware. The value 0x06 identifies
2147          * the bootloader and the value 0x23 identifies the operational
2148          * firmware.
2149          *
2150          * When the operational firmware is already present, then only
2151          * the check for valid Bluetooth device address is needed. This
2152          * determines if the device will be added as configured or
2153          * unconfigured controller.
2154          *
2155          * It is not possible to use the Secure Boot Parameters in this
2156          * case since that command is only available in bootloader mode.
2157          */
2158         if (ver.fw_variant == 0x23) {
2159                 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2160                 btintel_check_bdaddr(hdev);
2161                 return 0;
2162         }
2163
2164         /* If the device is not in bootloader mode, then the only possible
2165          * choice is to return an error and abort the device initialization.
2166          */
2167         if (ver.fw_variant != 0x06) {
2168                 bt_dev_err(hdev, "Unsupported Intel firmware variant (%u)",
2169                            ver.fw_variant);
2170                 return -ENODEV;
2171         }
2172
2173         /* Read the secure boot parameters to identify the operating
2174          * details of the bootloader.
2175          */
2176         err = btintel_read_boot_params(hdev, &params);
2177         if (err)
2178                 return err;
2179
2180         /* It is required that every single firmware fragment is acknowledged
2181          * with a command complete event. If the boot parameters indicate
2182          * that this bootloader does not send them, then abort the setup.
2183          */
2184         if (params.limited_cce != 0x00) {
2185                 bt_dev_err(hdev, "Unsupported Intel firmware loading method (%u)",
2186                            params.limited_cce);
2187                 return -EINVAL;
2188         }
2189
2190         /* If the OTP has no valid Bluetooth device address, then there will
2191          * also be no valid address for the operational firmware.
2192          */
2193         if (!bacmp(&params.otp_bdaddr, BDADDR_ANY)) {
2194                 bt_dev_info(hdev, "No device address configured");
2195                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2196         }
2197
2198         /* With this Intel bootloader only the hardware variant and device
2199          * revision information are used to select the right firmware for SfP
2200          * and WsP.
2201          *
2202          * The firmware filename is ibt-<hw_variant>-<dev_revid>.sfi.
2203          *
2204          * Currently the supported hardware variants are:
2205          *   11 (0x0b) for iBT3.0 (LnP/SfP)
2206          *   12 (0x0c) for iBT3.5 (WsP)
2207          *
2208          * For ThP/JfP and for future SKU's, the FW name varies based on HW
2209          * variant, HW revision and FW revision, as these are dependent on CNVi
2210          * and RF Combination.
2211          *
2212          *   17 (0x11) for iBT3.5 (JfP)
2213          *   18 (0x12) for iBT3.5 (ThP)
2214          *
2215          * The firmware file name for these will be
2216          * ibt-<hw_variant>-<hw_revision>-<fw_revision>.sfi.
2217          *
2218          */
2219         err = btusb_setup_intel_new_get_fw_name(&ver, &params, fwname,
2220                                                 sizeof(fwname), "sfi");
2221         if (!err) {
2222                 bt_dev_err(hdev, "Unsupported Intel firmware naming");
2223                 return -EINVAL;
2224         }
2225
2226         err = request_firmware(&fw, fwname, &hdev->dev);
2227         if (err < 0) {
2228                 bt_dev_err(hdev, "Failed to load Intel firmware file (%d)", err);
2229                 return err;
2230         }
2231
2232         bt_dev_info(hdev, "Found device firmware: %s", fwname);
2233
2234         /* Save the DDC file name for later use to apply once the firmware
2235          * downloading is done.
2236          */
2237         err = btusb_setup_intel_new_get_fw_name(&ver, &params, fwname,
2238                                                 sizeof(fwname), "ddc");
2239         if (!err) {
2240                 bt_dev_err(hdev, "Unsupported Intel firmware naming");
2241                 return -EINVAL;
2242         }
2243
2244         if (fw->size < 644) {
2245                 bt_dev_err(hdev, "Invalid size of firmware file (%zu)",
2246                            fw->size);
2247                 err = -EBADF;
2248                 goto done;
2249         }
2250
2251         set_bit(BTUSB_DOWNLOADING, &data->flags);
2252
2253         /* Start firmware downloading and get boot parameter */
2254         err = btintel_download_firmware(hdev, fw, &boot_param);
2255         if (err < 0)
2256                 goto done;
2257
2258         set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2259
2260         bt_dev_info(hdev, "Waiting for firmware download to complete");
2261
2262         /* Before switching the device into operational mode and with that
2263          * booting the loaded firmware, wait for the bootloader notification
2264          * that all fragments have been successfully received.
2265          *
2266          * When the event processing receives the notification, then the
2267          * BTUSB_DOWNLOADING flag will be cleared.
2268          *
2269          * The firmware loading should not take longer than 5 seconds
2270          * and thus just timeout if that happens and fail the setup
2271          * of this device.
2272          */
2273         err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
2274                                   TASK_INTERRUPTIBLE,
2275                                   msecs_to_jiffies(5000));
2276         if (err == -EINTR) {
2277                 bt_dev_err(hdev, "Firmware loading interrupted");
2278                 goto done;
2279         }
2280
2281         if (err) {
2282                 bt_dev_err(hdev, "Firmware loading timeout");
2283                 err = -ETIMEDOUT;
2284                 goto done;
2285         }
2286
2287         if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) {
2288                 bt_dev_err(hdev, "Firmware loading failed");
2289                 err = -ENOEXEC;
2290                 goto done;
2291         }
2292
2293         rettime = ktime_get();
2294         delta = ktime_sub(rettime, calltime);
2295         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2296
2297         bt_dev_info(hdev, "Firmware loaded in %llu usecs", duration);
2298
2299 done:
2300         release_firmware(fw);
2301
2302         if (err < 0)
2303                 return err;
2304
2305         calltime = ktime_get();
2306
2307         set_bit(BTUSB_BOOTING, &data->flags);
2308
2309         err = btintel_send_intel_reset(hdev, boot_param);
2310         if (err)
2311                 return err;
2312
2313         /* The bootloader will not indicate when the device is ready. This
2314          * is done by the operational firmware sending bootup notification.
2315          *
2316          * Booting into operational firmware should not take longer than
2317          * 1 second. However if that happens, then just fail the setup
2318          * since something went wrong.
2319          */
2320         bt_dev_info(hdev, "Waiting for device to boot");
2321
2322         err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING,
2323                                   TASK_INTERRUPTIBLE,
2324                                   msecs_to_jiffies(1000));
2325
2326         if (err == -EINTR) {
2327                 bt_dev_err(hdev, "Device boot interrupted");
2328                 return -EINTR;
2329         }
2330
2331         if (err) {
2332                 bt_dev_err(hdev, "Device boot timeout");
2333                 return -ETIMEDOUT;
2334         }
2335
2336         rettime = ktime_get();
2337         delta = ktime_sub(rettime, calltime);
2338         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2339
2340         bt_dev_info(hdev, "Device booted in %llu usecs", duration);
2341
2342         clear_bit(BTUSB_BOOTLOADER, &data->flags);
2343
2344         /* Once the device is running in operational mode, it needs to apply
2345          * the device configuration (DDC) parameters.
2346          *
2347          * The device can work without DDC parameters, so even if it fails
2348          * to load the file, no need to fail the setup.
2349          */
2350         btintel_load_ddc_config(hdev, fwname);
2351
2352         /* Set the event mask for Intel specific vendor events. This enables
2353          * a few extra events that are useful during general operation. It
2354          * does not enable any debugging related events.
2355          *
2356          * The device will function correctly without these events enabled
2357          * and thus no need to fail the setup.
2358          */
2359         btintel_set_event_mask(hdev, false);
2360
2361         return 0;
2362 }
2363
2364 static int btusb_shutdown_intel(struct hci_dev *hdev)
2365 {
2366         struct sk_buff *skb;
2367         long ret;
2368
2369         /* In the shutdown sequence where Bluetooth is turned off followed
2370          * by WiFi being turned off, turning WiFi back on causes issue with
2371          * the RF calibration.
2372          *
2373          * To ensure that any RF activity has been stopped, issue HCI Reset
2374          * command to clear all ongoing activity including advertising,
2375          * scanning etc.
2376          */
2377         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2378         if (IS_ERR(skb)) {
2379                 ret = PTR_ERR(skb);
2380                 bt_dev_err(hdev, "HCI reset during shutdown failed");
2381                 return ret;
2382         }
2383         kfree_skb(skb);
2384
2385         /* Some platforms have an issue with BT LED when the interface is
2386          * down or BT radio is turned off, which takes 5 seconds to BT LED
2387          * goes off. This command turns off the BT LED immediately.
2388          */
2389         skb = __hci_cmd_sync(hdev, 0xfc3f, 0, NULL, HCI_INIT_TIMEOUT);
2390         if (IS_ERR(skb)) {
2391                 ret = PTR_ERR(skb);
2392                 bt_dev_err(hdev, "turning off Intel device LED failed");
2393                 return ret;
2394         }
2395         kfree_skb(skb);
2396
2397         return 0;
2398 }
2399
2400 #ifdef CONFIG_PM
2401 /* Configure an out-of-band gpio as wake-up pin, if specified in device tree */
2402 static int marvell_config_oob_wake(struct hci_dev *hdev)
2403 {
2404         struct sk_buff *skb;
2405         struct btusb_data *data = hci_get_drvdata(hdev);
2406         struct device *dev = &data->udev->dev;
2407         u16 pin, gap, opcode;
2408         int ret;
2409         u8 cmd[5];
2410
2411         /* Move on if no wakeup pin specified */
2412         if (of_property_read_u16(dev->of_node, "marvell,wakeup-pin", &pin) ||
2413             of_property_read_u16(dev->of_node, "marvell,wakeup-gap-ms", &gap))
2414                 return 0;
2415
2416         /* Vendor specific command to configure a GPIO as wake-up pin */
2417         opcode = hci_opcode_pack(0x3F, 0x59);
2418         cmd[0] = opcode & 0xFF;
2419         cmd[1] = opcode >> 8;
2420         cmd[2] = 2; /* length of parameters that follow */
2421         cmd[3] = pin;
2422         cmd[4] = gap; /* time in ms, for which wakeup pin should be asserted */
2423
2424         skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
2425         if (!skb) {
2426                 bt_dev_err(hdev, "%s: No memory\n", __func__);
2427                 return -ENOMEM;
2428         }
2429
2430         skb_put_data(skb, cmd, sizeof(cmd));
2431         hci_skb_pkt_type(skb) = HCI_COMMAND_PKT;
2432
2433         ret = btusb_send_frame(hdev, skb);
2434         if (ret) {
2435                 bt_dev_err(hdev, "%s: configuration failed\n", __func__);
2436                 kfree_skb(skb);
2437                 return ret;
2438         }
2439
2440         return 0;
2441 }
2442 #endif
2443
2444 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
2445                                     const bdaddr_t *bdaddr)
2446 {
2447         struct sk_buff *skb;
2448         u8 buf[8];
2449         long ret;
2450
2451         buf[0] = 0xfe;
2452         buf[1] = sizeof(bdaddr_t);
2453         memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
2454
2455         skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2456         if (IS_ERR(skb)) {
2457                 ret = PTR_ERR(skb);
2458                 bt_dev_err(hdev, "changing Marvell device address failed (%ld)",
2459                            ret);
2460                 return ret;
2461         }
2462         kfree_skb(skb);
2463
2464         return 0;
2465 }
2466
2467 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
2468                                     const bdaddr_t *bdaddr)
2469 {
2470         struct sk_buff *skb;
2471         u8 buf[10];
2472         long ret;
2473
2474         buf[0] = 0x01;
2475         buf[1] = 0x01;
2476         buf[2] = 0x00;
2477         buf[3] = sizeof(bdaddr_t);
2478         memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
2479
2480         skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2481         if (IS_ERR(skb)) {
2482                 ret = PTR_ERR(skb);
2483                 bt_dev_err(hdev, "Change address command failed (%ld)", ret);
2484                 return ret;
2485         }
2486         kfree_skb(skb);
2487
2488         return 0;
2489 }
2490
2491 #define QCA_DFU_PACKET_LEN      4096
2492
2493 #define QCA_GET_TARGET_VERSION  0x09
2494 #define QCA_CHECK_STATUS        0x05
2495 #define QCA_DFU_DOWNLOAD        0x01
2496
2497 #define QCA_SYSCFG_UPDATED      0x40
2498 #define QCA_PATCH_UPDATED       0x80
2499 #define QCA_DFU_TIMEOUT         3000
2500
2501 struct qca_version {
2502         __le32  rom_version;
2503         __le32  patch_version;
2504         __le32  ram_version;
2505         __le32  ref_clock;
2506         __u8    reserved[4];
2507 } __packed;
2508
2509 struct qca_rampatch_version {
2510         __le16  rom_version;
2511         __le16  patch_version;
2512 } __packed;
2513
2514 struct qca_device_info {
2515         u32     rom_version;
2516         u8      rampatch_hdr;   /* length of header in rampatch */
2517         u8      nvm_hdr;        /* length of header in NVM */
2518         u8      ver_offset;     /* offset of version structure in rampatch */
2519 };
2520
2521 static const struct qca_device_info qca_devices_table[] = {
2522         { 0x00000100, 20, 4, 10 }, /* Rome 1.0 */
2523         { 0x00000101, 20, 4, 10 }, /* Rome 1.1 */
2524         { 0x00000200, 28, 4, 18 }, /* Rome 2.0 */
2525         { 0x00000201, 28, 4, 18 }, /* Rome 2.1 */
2526         { 0x00000300, 28, 4, 18 }, /* Rome 3.0 */
2527         { 0x00000302, 28, 4, 18 }, /* Rome 3.2 */
2528 };
2529
2530 static int btusb_qca_send_vendor_req(struct usb_device *udev, u8 request,
2531                                      void *data, u16 size)
2532 {
2533         int pipe, err;
2534         u8 *buf;
2535
2536         buf = kmalloc(size, GFP_KERNEL);
2537         if (!buf)
2538                 return -ENOMEM;
2539
2540         /* Found some of USB hosts have IOT issues with ours so that we should
2541          * not wait until HCI layer is ready.
2542          */
2543         pipe = usb_rcvctrlpipe(udev, 0);
2544         err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
2545                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2546         if (err < 0) {
2547                 dev_err(&udev->dev, "Failed to access otp area (%d)", err);
2548                 goto done;
2549         }
2550
2551         memcpy(data, buf, size);
2552
2553 done:
2554         kfree(buf);
2555
2556         return err;
2557 }
2558
2559 static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
2560                                        const struct firmware *firmware,
2561                                        size_t hdr_size)
2562 {
2563         struct btusb_data *btdata = hci_get_drvdata(hdev);
2564         struct usb_device *udev = btdata->udev;
2565         size_t count, size, sent = 0;
2566         int pipe, len, err;
2567         u8 *buf;
2568
2569         buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
2570         if (!buf)
2571                 return -ENOMEM;
2572
2573         count = firmware->size;
2574
2575         size = min_t(size_t, count, hdr_size);
2576         memcpy(buf, firmware->data, size);
2577
2578         /* USB patches should go down to controller through USB path
2579          * because binary format fits to go down through USB channel.
2580          * USB control path is for patching headers and USB bulk is for
2581          * patch body.
2582          */
2583         pipe = usb_sndctrlpipe(udev, 0);
2584         err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
2585                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2586         if (err < 0) {
2587                 bt_dev_err(hdev, "Failed to send headers (%d)", err);
2588                 goto done;
2589         }
2590
2591         sent += size;
2592         count -= size;
2593
2594         while (count) {
2595                 size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
2596
2597                 memcpy(buf, firmware->data + sent, size);
2598
2599                 pipe = usb_sndbulkpipe(udev, 0x02);
2600                 err = usb_bulk_msg(udev, pipe, buf, size, &len,
2601                                    QCA_DFU_TIMEOUT);
2602                 if (err < 0) {
2603                         bt_dev_err(hdev, "Failed to send body at %zd of %zd (%d)",
2604                                    sent, firmware->size, err);
2605                         break;
2606                 }
2607
2608                 if (size != len) {
2609                         bt_dev_err(hdev, "Failed to get bulk buffer");
2610                         err = -EILSEQ;
2611                         break;
2612                 }
2613
2614                 sent  += size;
2615                 count -= size;
2616         }
2617
2618 done:
2619         kfree(buf);
2620         return err;
2621 }
2622
2623 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
2624                                          struct qca_version *ver,
2625                                          const struct qca_device_info *info)
2626 {
2627         struct qca_rampatch_version *rver;
2628         const struct firmware *fw;
2629         u32 ver_rom, ver_patch;
2630         u16 rver_rom, rver_patch;
2631         char fwname[64];
2632         int err;
2633
2634         ver_rom = le32_to_cpu(ver->rom_version);
2635         ver_patch = le32_to_cpu(ver->patch_version);
2636
2637         snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom);
2638
2639         err = request_firmware(&fw, fwname, &hdev->dev);
2640         if (err) {
2641                 bt_dev_err(hdev, "failed to request rampatch file: %s (%d)",
2642                            fwname, err);
2643                 return err;
2644         }
2645
2646         bt_dev_info(hdev, "using rampatch file: %s", fwname);
2647
2648         rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
2649         rver_rom = le16_to_cpu(rver->rom_version);
2650         rver_patch = le16_to_cpu(rver->patch_version);
2651
2652         bt_dev_info(hdev, "QCA: patch rome 0x%x build 0x%x, "
2653                     "firmware rome 0x%x build 0x%x",
2654                     rver_rom, rver_patch, ver_rom, ver_patch);
2655
2656         if (rver_rom != ver_rom || rver_patch <= ver_patch) {
2657                 bt_dev_err(hdev, "rampatch file version did not match with firmware");
2658                 err = -EINVAL;
2659                 goto done;
2660         }
2661
2662         err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
2663
2664 done:
2665         release_firmware(fw);
2666
2667         return err;
2668 }
2669
2670 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
2671                                     struct qca_version *ver,
2672                                     const struct qca_device_info *info)
2673 {
2674         const struct firmware *fw;
2675         char fwname[64];
2676         int err;
2677
2678         snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x.bin",
2679                  le32_to_cpu(ver->rom_version));
2680
2681         err = request_firmware(&fw, fwname, &hdev->dev);
2682         if (err) {
2683                 bt_dev_err(hdev, "failed to request NVM file: %s (%d)",
2684                            fwname, err);
2685                 return err;
2686         }
2687
2688         bt_dev_info(hdev, "using NVM file: %s", fwname);
2689
2690         err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
2691
2692         release_firmware(fw);
2693
2694         return err;
2695 }
2696
2697 /* identify the ROM version and check whether patches are needed */
2698 static bool btusb_qca_need_patch(struct usb_device *udev)
2699 {
2700         struct qca_version ver;
2701
2702         if (btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
2703                                       sizeof(ver)) < 0)
2704                 return false;
2705         /* only low ROM versions need patches */
2706         return !(le32_to_cpu(ver.rom_version) & ~0xffffU);
2707 }
2708
2709 static int btusb_setup_qca(struct hci_dev *hdev)
2710 {
2711         struct btusb_data *btdata = hci_get_drvdata(hdev);
2712         struct usb_device *udev = btdata->udev;
2713         const struct qca_device_info *info = NULL;
2714         struct qca_version ver;
2715         u32 ver_rom;
2716         u8 status;
2717         int i, err;
2718
2719         err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
2720                                         sizeof(ver));
2721         if (err < 0)
2722                 return err;
2723
2724         ver_rom = le32_to_cpu(ver.rom_version);
2725         /* Don't care about high ROM versions */
2726         if (ver_rom & ~0xffffU)
2727                 return 0;
2728
2729         for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
2730                 if (ver_rom == qca_devices_table[i].rom_version)
2731                         info = &qca_devices_table[i];
2732         }
2733         if (!info) {
2734                 bt_dev_err(hdev, "don't support firmware rome 0x%x", ver_rom);
2735                 return -ENODEV;
2736         }
2737
2738         err = btusb_qca_send_vendor_req(udev, QCA_CHECK_STATUS, &status,
2739                                         sizeof(status));
2740         if (err < 0)
2741                 return err;
2742
2743         if (!(status & QCA_PATCH_UPDATED)) {
2744                 err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
2745                 if (err < 0)
2746                         return err;
2747         }
2748
2749         if (!(status & QCA_SYSCFG_UPDATED)) {
2750                 err = btusb_setup_qca_load_nvm(hdev, &ver, info);
2751                 if (err < 0)
2752                         return err;
2753         }
2754
2755         return 0;
2756 }
2757
2758 #ifdef CONFIG_BT_HCIBTUSB_BCM
2759 static inline int __set_diag_interface(struct hci_dev *hdev)
2760 {
2761         struct btusb_data *data = hci_get_drvdata(hdev);
2762         struct usb_interface *intf = data->diag;
2763         int i;
2764
2765         if (!data->diag)
2766                 return -ENODEV;
2767
2768         data->diag_tx_ep = NULL;
2769         data->diag_rx_ep = NULL;
2770
2771         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2772                 struct usb_endpoint_descriptor *ep_desc;
2773
2774                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2775
2776                 if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
2777                         data->diag_tx_ep = ep_desc;
2778                         continue;
2779                 }
2780
2781                 if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
2782                         data->diag_rx_ep = ep_desc;
2783                         continue;
2784                 }
2785         }
2786
2787         if (!data->diag_tx_ep || !data->diag_rx_ep) {
2788                 bt_dev_err(hdev, "invalid diagnostic descriptors");
2789                 return -ENODEV;
2790         }
2791
2792         return 0;
2793 }
2794
2795 static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable)
2796 {
2797         struct btusb_data *data = hci_get_drvdata(hdev);
2798         struct sk_buff *skb;
2799         struct urb *urb;
2800         unsigned int pipe;
2801
2802         if (!data->diag_tx_ep)
2803                 return ERR_PTR(-ENODEV);
2804
2805         urb = usb_alloc_urb(0, GFP_KERNEL);
2806         if (!urb)
2807                 return ERR_PTR(-ENOMEM);
2808
2809         skb = bt_skb_alloc(2, GFP_KERNEL);
2810         if (!skb) {
2811                 usb_free_urb(urb);
2812                 return ERR_PTR(-ENOMEM);
2813         }
2814
2815         skb_put_u8(skb, 0xf0);
2816         skb_put_u8(skb, enable);
2817
2818         pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress);
2819
2820         usb_fill_bulk_urb(urb, data->udev, pipe,
2821                           skb->data, skb->len, btusb_tx_complete, skb);
2822
2823         skb->dev = (void *)hdev;
2824
2825         return urb;
2826 }
2827
2828 static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable)
2829 {
2830         struct btusb_data *data = hci_get_drvdata(hdev);
2831         struct urb *urb;
2832
2833         if (!data->diag)
2834                 return -ENODEV;
2835
2836         if (!test_bit(HCI_RUNNING, &hdev->flags))
2837                 return -ENETDOWN;
2838
2839         urb = alloc_diag_urb(hdev, enable);
2840         if (IS_ERR(urb))
2841                 return PTR_ERR(urb);
2842
2843         return submit_or_queue_tx_urb(hdev, urb);
2844 }
2845 #endif
2846
2847 #ifdef CONFIG_PM
2848 static irqreturn_t btusb_oob_wake_handler(int irq, void *priv)
2849 {
2850         struct btusb_data *data = priv;
2851
2852         pm_wakeup_event(&data->udev->dev, 0);
2853         pm_system_wakeup();
2854
2855         /* Disable only if not already disabled (keep it balanced) */
2856         if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
2857                 disable_irq_nosync(irq);
2858                 disable_irq_wake(irq);
2859         }
2860         return IRQ_HANDLED;
2861 }
2862
2863 static const struct of_device_id btusb_match_table[] = {
2864         { .compatible = "usb1286,204e" },
2865         { }
2866 };
2867 MODULE_DEVICE_TABLE(of, btusb_match_table);
2868
2869 /* Use an oob wakeup pin? */
2870 static int btusb_config_oob_wake(struct hci_dev *hdev)
2871 {
2872         struct btusb_data *data = hci_get_drvdata(hdev);
2873         struct device *dev = &data->udev->dev;
2874         int irq, ret;
2875
2876         clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
2877
2878         if (!of_match_device(btusb_match_table, dev))
2879                 return 0;
2880
2881         /* Move on if no IRQ specified */
2882         irq = of_irq_get_byname(dev->of_node, "wakeup");
2883         if (irq <= 0) {
2884                 bt_dev_dbg(hdev, "%s: no OOB Wakeup IRQ in DT", __func__);
2885                 return 0;
2886         }
2887
2888         ret = devm_request_irq(&hdev->dev, irq, btusb_oob_wake_handler,
2889                                0, "OOB Wake-on-BT", data);
2890         if (ret) {
2891                 bt_dev_err(hdev, "%s: IRQ request failed", __func__);
2892                 return ret;
2893         }
2894
2895         ret = device_init_wakeup(dev, true);
2896         if (ret) {
2897                 bt_dev_err(hdev, "%s: failed to init_wakeup", __func__);
2898                 return ret;
2899         }
2900
2901         data->oob_wake_irq = irq;
2902         disable_irq(irq);
2903         bt_dev_info(hdev, "OOB Wake-on-BT configured at IRQ %u", irq);
2904         return 0;
2905 }
2906 #endif
2907
2908 static void btusb_check_needs_reset_resume(struct usb_interface *intf)
2909 {
2910         if (dmi_check_system(btusb_needs_reset_resume_table))
2911                 interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME;
2912 }
2913
2914 static int btusb_probe(struct usb_interface *intf,
2915                        const struct usb_device_id *id)
2916 {
2917         struct usb_endpoint_descriptor *ep_desc;
2918         struct btusb_data *data;
2919         struct hci_dev *hdev;
2920         unsigned ifnum_base;
2921         int i, err;
2922
2923         BT_DBG("intf %p id %p", intf, id);
2924
2925         /* interface numbers are hardcoded in the spec */
2926         if (intf->cur_altsetting->desc.bInterfaceNumber != 0) {
2927                 if (!(id->driver_info & BTUSB_IFNUM_2))
2928                         return -ENODEV;
2929                 if (intf->cur_altsetting->desc.bInterfaceNumber != 2)
2930                         return -ENODEV;
2931         }
2932
2933         ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber;
2934
2935         if (!id->driver_info) {
2936                 const struct usb_device_id *match;
2937
2938                 match = usb_match_id(intf, blacklist_table);
2939                 if (match)
2940                         id = match;
2941         }
2942
2943         if (id->driver_info == BTUSB_IGNORE)
2944                 return -ENODEV;
2945
2946         if (id->driver_info & BTUSB_ATH3012) {
2947                 struct usb_device *udev = interface_to_usbdev(intf);
2948
2949                 /* Old firmware would otherwise let ath3k driver load
2950                  * patch and sysconfig files
2951                  */
2952                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001 &&
2953                     !btusb_qca_need_patch(udev))
2954                         return -ENODEV;
2955         }
2956
2957         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
2958         if (!data)
2959                 return -ENOMEM;
2960
2961         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2962                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2963
2964                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
2965                         data->intr_ep = ep_desc;
2966                         continue;
2967                 }
2968
2969                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
2970                         data->bulk_tx_ep = ep_desc;
2971                         continue;
2972                 }
2973
2974                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
2975                         data->bulk_rx_ep = ep_desc;
2976                         continue;
2977                 }
2978         }
2979
2980         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
2981                 return -ENODEV;
2982
2983         if (id->driver_info & BTUSB_AMP) {
2984                 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
2985                 data->cmdreq = 0x2b;
2986         } else {
2987                 data->cmdreq_type = USB_TYPE_CLASS;
2988                 data->cmdreq = 0x00;
2989         }
2990
2991         data->udev = interface_to_usbdev(intf);
2992         data->intf = intf;
2993
2994         INIT_WORK(&data->work, btusb_work);
2995         INIT_WORK(&data->waker, btusb_waker);
2996         init_usb_anchor(&data->deferred);
2997         init_usb_anchor(&data->tx_anchor);
2998         spin_lock_init(&data->txlock);
2999
3000         init_usb_anchor(&data->intr_anchor);
3001         init_usb_anchor(&data->bulk_anchor);
3002         init_usb_anchor(&data->isoc_anchor);
3003         init_usb_anchor(&data->diag_anchor);
3004         spin_lock_init(&data->rxlock);
3005
3006         if (id->driver_info & BTUSB_INTEL_NEW) {
3007                 data->recv_event = btusb_recv_event_intel;
3008                 data->recv_bulk = btusb_recv_bulk_intel;
3009                 set_bit(BTUSB_BOOTLOADER, &data->flags);
3010         } else {
3011                 data->recv_event = hci_recv_frame;
3012                 data->recv_bulk = btusb_recv_bulk;
3013         }
3014
3015         hdev = hci_alloc_dev();
3016         if (!hdev)
3017                 return -ENOMEM;
3018
3019         hdev->bus = HCI_USB;
3020         hci_set_drvdata(hdev, data);
3021
3022         if (id->driver_info & BTUSB_AMP)
3023                 hdev->dev_type = HCI_AMP;
3024         else
3025                 hdev->dev_type = HCI_PRIMARY;
3026
3027         data->hdev = hdev;
3028
3029         SET_HCIDEV_DEV(hdev, &intf->dev);
3030
3031         hdev->open   = btusb_open;
3032         hdev->close  = btusb_close;
3033         hdev->flush  = btusb_flush;
3034         hdev->send   = btusb_send_frame;
3035         hdev->notify = btusb_notify;
3036
3037 #ifdef CONFIG_PM
3038         err = btusb_config_oob_wake(hdev);
3039         if (err)
3040                 goto out_free_dev;
3041
3042         /* Marvell devices may need a specific chip configuration */
3043         if (id->driver_info & BTUSB_MARVELL && data->oob_wake_irq) {
3044                 err = marvell_config_oob_wake(hdev);
3045                 if (err)
3046                         goto out_free_dev;
3047         }
3048 #endif
3049         if (id->driver_info & BTUSB_CW6622)
3050                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
3051
3052         if (id->driver_info & BTUSB_BCM2045)
3053                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
3054
3055         if (id->driver_info & BTUSB_BCM92035)
3056                 hdev->setup = btusb_setup_bcm92035;
3057
3058 #ifdef CONFIG_BT_HCIBTUSB_BCM
3059         if (id->driver_info & BTUSB_BCM_PATCHRAM) {
3060                 hdev->manufacturer = 15;
3061                 hdev->setup = btbcm_setup_patchram;
3062                 hdev->set_diag = btusb_bcm_set_diag;
3063                 hdev->set_bdaddr = btbcm_set_bdaddr;
3064
3065                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
3066                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
3067         }
3068
3069         if (id->driver_info & BTUSB_BCM_APPLE) {
3070                 hdev->manufacturer = 15;
3071                 hdev->setup = btbcm_setup_apple;
3072                 hdev->set_diag = btusb_bcm_set_diag;
3073
3074                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
3075                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
3076         }
3077 #endif
3078
3079         if (id->driver_info & BTUSB_INTEL) {
3080                 hdev->manufacturer = 2;
3081                 hdev->setup = btusb_setup_intel;
3082                 hdev->shutdown = btusb_shutdown_intel;
3083                 hdev->set_diag = btintel_set_diag_mfg;
3084                 hdev->set_bdaddr = btintel_set_bdaddr;
3085                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3086                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3087                 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
3088         }
3089
3090         if (id->driver_info & BTUSB_INTEL_NEW) {
3091                 hdev->manufacturer = 2;
3092                 hdev->send = btusb_send_frame_intel;
3093                 hdev->setup = btusb_setup_intel_new;
3094                 hdev->hw_error = btintel_hw_error;
3095                 hdev->set_diag = btintel_set_diag;
3096                 hdev->set_bdaddr = btintel_set_bdaddr;
3097                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3098                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3099                 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
3100         }
3101
3102         if (id->driver_info & BTUSB_MARVELL)
3103                 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
3104
3105         if (id->driver_info & BTUSB_SWAVE) {
3106                 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
3107                 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
3108         }
3109
3110         if (id->driver_info & BTUSB_INTEL_BOOT) {
3111                 hdev->manufacturer = 2;
3112                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3113         }
3114
3115         if (id->driver_info & BTUSB_ATH3012) {
3116                 data->setup_on_usb = btusb_setup_qca;
3117                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
3118                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3119                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3120         }
3121
3122         if (id->driver_info & BTUSB_QCA_ROME) {
3123                 data->setup_on_usb = btusb_setup_qca;
3124                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
3125                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3126                 btusb_check_needs_reset_resume(intf);
3127         }
3128
3129 #ifdef CONFIG_BT_HCIBTUSB_RTL
3130         if (id->driver_info & BTUSB_REALTEK) {
3131                 hdev->setup = btrtl_setup_realtek;
3132
3133                 /* Realtek devices lose their updated firmware over suspend,
3134                  * but the USB hub doesn't notice any status change.
3135                  * Explicitly request a device reset on resume.
3136                  */
3137                 interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME;
3138         }
3139 #endif
3140
3141         if (id->driver_info & BTUSB_AMP) {
3142                 /* AMP controllers do not support SCO packets */
3143                 data->isoc = NULL;
3144         } else {
3145                 /* Interface orders are hardcoded in the specification */
3146                 data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1);
3147                 data->isoc_ifnum = ifnum_base + 1;
3148         }
3149
3150         if (!reset)
3151                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3152
3153         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
3154                 if (!disable_scofix)
3155                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
3156         }
3157
3158         if (id->driver_info & BTUSB_BROKEN_ISOC)
3159                 data->isoc = NULL;
3160
3161         if (id->driver_info & BTUSB_DIGIANSWER) {
3162                 data->cmdreq_type = USB_TYPE_VENDOR;
3163                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3164         }
3165
3166         if (id->driver_info & BTUSB_CSR) {
3167                 struct usb_device *udev = data->udev;
3168                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
3169
3170                 /* Old firmware would otherwise execute USB reset */
3171                 if (bcdDevice < 0x117)
3172                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3173
3174                 /* Fake CSR devices with broken commands */
3175                 if (bcdDevice <= 0x100 || bcdDevice == 0x134)
3176                         hdev->setup = btusb_setup_csr;
3177
3178                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3179         }
3180
3181         if (id->driver_info & BTUSB_SNIFFER) {
3182                 struct usb_device *udev = data->udev;
3183
3184                 /* New sniffer firmware has crippled HCI interface */
3185                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
3186                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3187         }
3188
3189         if (id->driver_info & BTUSB_INTEL_BOOT) {
3190                 /* A bug in the bootloader causes that interrupt interface is
3191                  * only enabled after receiving SetInterface(0, AltSetting=0).
3192                  */
3193                 err = usb_set_interface(data->udev, 0, 0);
3194                 if (err < 0) {
3195                         BT_ERR("failed to set interface 0, alt 0 %d", err);
3196                         goto out_free_dev;
3197                 }
3198         }
3199
3200         if (data->isoc) {
3201                 err = usb_driver_claim_interface(&btusb_driver,
3202                                                  data->isoc, data);
3203                 if (err < 0)
3204                         goto out_free_dev;
3205         }
3206
3207 #ifdef CONFIG_BT_HCIBTUSB_BCM
3208         if (data->diag) {
3209                 if (!usb_driver_claim_interface(&btusb_driver,
3210                                                 data->diag, data))
3211                         __set_diag_interface(hdev);
3212                 else
3213                         data->diag = NULL;
3214         }
3215 #endif
3216
3217         if (enable_autosuspend)
3218                 usb_enable_autosuspend(data->udev);
3219
3220         err = hci_register_dev(hdev);
3221         if (err < 0)
3222                 goto out_free_dev;
3223
3224         usb_set_intfdata(intf, data);
3225
3226         return 0;
3227
3228 out_free_dev:
3229         hci_free_dev(hdev);
3230         return err;
3231 }
3232
3233 static void btusb_disconnect(struct usb_interface *intf)
3234 {
3235         struct btusb_data *data = usb_get_intfdata(intf);
3236         struct hci_dev *hdev;
3237
3238         BT_DBG("intf %p", intf);
3239
3240         if (!data)
3241                 return;
3242
3243         hdev = data->hdev;
3244         usb_set_intfdata(data->intf, NULL);
3245
3246         if (data->isoc)
3247                 usb_set_intfdata(data->isoc, NULL);
3248
3249         if (data->diag)
3250                 usb_set_intfdata(data->diag, NULL);
3251
3252         hci_unregister_dev(hdev);
3253
3254         if (intf == data->intf) {
3255                 if (data->isoc)
3256                         usb_driver_release_interface(&btusb_driver, data->isoc);
3257                 if (data->diag)
3258                         usb_driver_release_interface(&btusb_driver, data->diag);
3259         } else if (intf == data->isoc) {
3260                 if (data->diag)
3261                         usb_driver_release_interface(&btusb_driver, data->diag);
3262                 usb_driver_release_interface(&btusb_driver, data->intf);
3263         } else if (intf == data->diag) {
3264                 usb_driver_release_interface(&btusb_driver, data->intf);
3265                 if (data->isoc)
3266                         usb_driver_release_interface(&btusb_driver, data->isoc);
3267         }
3268
3269         if (data->oob_wake_irq)
3270                 device_init_wakeup(&data->udev->dev, false);
3271
3272         hci_free_dev(hdev);
3273 }
3274
3275 #ifdef CONFIG_PM
3276 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
3277 {
3278         struct btusb_data *data = usb_get_intfdata(intf);
3279
3280         BT_DBG("intf %p", intf);
3281
3282         if (data->suspend_count++)
3283                 return 0;
3284
3285         spin_lock_irq(&data->txlock);
3286         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
3287                 set_bit(BTUSB_SUSPENDING, &data->flags);
3288                 spin_unlock_irq(&data->txlock);
3289         } else {
3290                 spin_unlock_irq(&data->txlock);
3291                 data->suspend_count--;
3292                 return -EBUSY;
3293         }
3294
3295         cancel_work_sync(&data->work);
3296
3297         btusb_stop_traffic(data);
3298         usb_kill_anchored_urbs(&data->tx_anchor);
3299
3300         if (data->oob_wake_irq && device_may_wakeup(&data->udev->dev)) {
3301                 set_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
3302                 enable_irq_wake(data->oob_wake_irq);
3303                 enable_irq(data->oob_wake_irq);
3304         }
3305
3306         return 0;
3307 }
3308
3309 static void play_deferred(struct btusb_data *data)
3310 {
3311         struct urb *urb;
3312         int err;
3313
3314         while ((urb = usb_get_from_anchor(&data->deferred))) {
3315                 usb_anchor_urb(urb, &data->tx_anchor);
3316
3317                 err = usb_submit_urb(urb, GFP_ATOMIC);
3318                 if (err < 0) {
3319                         if (err != -EPERM && err != -ENODEV)
3320                                 BT_ERR("%s urb %p submission failed (%d)",
3321                                        data->hdev->name, urb, -err);
3322                         kfree(urb->setup_packet);
3323                         usb_unanchor_urb(urb);
3324                         usb_free_urb(urb);
3325                         break;
3326                 }
3327
3328                 data->tx_in_flight++;
3329                 usb_free_urb(urb);
3330         }
3331
3332         /* Cleanup the rest deferred urbs. */
3333         while ((urb = usb_get_from_anchor(&data->deferred))) {
3334                 kfree(urb->setup_packet);
3335                 usb_free_urb(urb);
3336         }
3337 }
3338
3339 static int btusb_resume(struct usb_interface *intf)
3340 {
3341         struct btusb_data *data = usb_get_intfdata(intf);
3342         struct hci_dev *hdev = data->hdev;
3343         int err = 0;
3344
3345         BT_DBG("intf %p", intf);
3346
3347         if (--data->suspend_count)
3348                 return 0;
3349
3350         /* Disable only if not already disabled (keep it balanced) */
3351         if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
3352                 disable_irq(data->oob_wake_irq);
3353                 disable_irq_wake(data->oob_wake_irq);
3354         }
3355
3356         if (!test_bit(HCI_RUNNING, &hdev->flags))
3357                 goto done;
3358
3359         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
3360                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
3361                 if (err < 0) {
3362                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
3363                         goto failed;
3364                 }
3365         }
3366
3367         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
3368                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
3369                 if (err < 0) {
3370                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
3371                         goto failed;
3372                 }
3373
3374                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
3375         }
3376
3377         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
3378                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
3379                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
3380                 else
3381                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
3382         }
3383
3384         spin_lock_irq(&data->txlock);
3385         play_deferred(data);
3386         clear_bit(BTUSB_SUSPENDING, &data->flags);
3387         spin_unlock_irq(&data->txlock);
3388         schedule_work(&data->work);
3389
3390         return 0;
3391
3392 failed:
3393         usb_scuttle_anchored_urbs(&data->deferred);
3394 done:
3395         spin_lock_irq(&data->txlock);
3396         clear_bit(BTUSB_SUSPENDING, &data->flags);
3397         spin_unlock_irq(&data->txlock);
3398
3399         return err;
3400 }
3401 #endif
3402
3403 static struct usb_driver btusb_driver = {
3404         .name           = "btusb",
3405         .probe          = btusb_probe,
3406         .disconnect     = btusb_disconnect,
3407 #ifdef CONFIG_PM
3408         .suspend        = btusb_suspend,
3409         .resume         = btusb_resume,
3410 #endif
3411         .id_table       = btusb_table,
3412         .supports_autosuspend = 1,
3413         .disable_hub_initiated_lpm = 1,
3414 };
3415
3416 module_usb_driver(btusb_driver);
3417
3418 module_param(disable_scofix, bool, 0644);
3419 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
3420
3421 module_param(force_scofix, bool, 0644);
3422 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
3423
3424 module_param(enable_autosuspend, bool, 0644);
3425 MODULE_PARM_DESC(enable_autosuspend, "Enable USB autosuspend by default");
3426
3427 module_param(reset, bool, 0644);
3428 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
3429
3430 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
3431 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
3432 MODULE_VERSION(VERSION);
3433 MODULE_LICENSE("GPL");