drivers/bluetooth/btusb.c

   1 /*
   2  *
   3  *  Generic Bluetooth USB driver
   4  *
   5  *  Copyright (C) 2005-2008  Marcel Holtmann <marcel@holtmann.org>
   6  *
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, write to the Free Software
  20  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  *
  22  */
  23
  24 #include <linux/dmi.h>
  25 #include <linux/module.h>
  26 #include <linux/usb.h>
  27 #include <linux/usb/quirks.h>
  28 #include <linux/firmware.h>
  29 #include <linux/of_device.h>
  30 #include <linux/of_irq.h>
  31 #include <linux/suspend.h>
  32 #include <asm/unaligned.h>
  33
  34 #include <net/bluetooth/bluetooth.h>
  35 #include <net/bluetooth/hci_core.h>
  36
  37 #include "btintel.h"
  38 #include "btbcm.h"
  39 #include "btrtl.h"
  40
  41 #define VERSION "0.8"
  42
  43 static bool disable_scofix;
  44 static bool force_scofix;
  45 static bool enable_autosuspend = IS_ENABLED(CONFIG_BT_HCIBTUSB_AUTOSUSPEND);
  46
  47 static bool reset = true;
  48
  49 static struct usb_driver btusb_driver;
  50
  51 #define BTUSB_IGNORE            0x01
  52 #define BTUSB_DIGIANSWER        0x02
  53 #define BTUSB_CSR               0x04
  54 #define BTUSB_SNIFFER           0x08
  55 #define BTUSB_BCM92035          0x10
  56 #define BTUSB_BROKEN_ISOC       0x20
  57 #define BTUSB_WRONG_SCO_MTU     0x40
  58 #define BTUSB_ATH3012           0x80
  59 #define BTUSB_INTEL             0x100
  60 #define BTUSB_INTEL_BOOT        0x200
  61 #define BTUSB_BCM_PATCHRAM      0x400
  62 #define BTUSB_MARVELL           0x800
  63 #define BTUSB_SWAVE             0x1000
  64 #define BTUSB_INTEL_NEW         0x2000
  65 #define BTUSB_AMP               0x4000
  66 #define BTUSB_QCA_ROME          0x8000
  67 #define BTUSB_BCM_APPLE         0x10000
  68 #define BTUSB_REALTEK           0x20000
  69 #define BTUSB_BCM2045           0x40000
  70 #define BTUSB_IFNUM_2           0x80000
  71 #define BTUSB_CW6622            0x100000
  72
  73 static const struct usb_device_id btusb_table[] = {
  74         /* Generic Bluetooth USB device */
  75         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  76
  77         /* Generic Bluetooth AMP device */
  78         { USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP },
  79
  80         /* Generic Bluetooth USB interface */
  81         { USB_INTERFACE_INFO(0xe0, 0x01, 0x01) },
  82
  83         /* Apple-specific (Broadcom) devices */
  84         { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01),
  85           .driver_info = BTUSB_BCM_APPLE | BTUSB_IFNUM_2 },
  86
  87         /* MediaTek MT76x0E */
  88         { USB_DEVICE(0x0e8d, 0x763f) },
  89
  90         /* Broadcom SoftSailing reporting vendor specific */
  91         { USB_DEVICE(0x0a5c, 0x21e1) },
  92
  93         /* Apple MacBookPro 7,1 */
  94         { USB_DEVICE(0x05ac, 0x8213) },
  95
  96         /* Apple iMac11,1 */
  97         { USB_DEVICE(0x05ac, 0x8215) },
  98
  99         /* Apple MacBookPro6,2 */
 100         { USB_DEVICE(0x05ac, 0x8218) },
 101
 102         /* Apple MacBookAir3,1, MacBookAir3,2 */
 103         { USB_DEVICE(0x05ac, 0x821b) },
 104
 105         /* Apple MacBookAir4,1 */
 106         { USB_DEVICE(0x05ac, 0x821f) },
 107
 108         /* Apple MacBookPro8,2 */
 109         { USB_DEVICE(0x05ac, 0x821a) },
 110
 111         /* Apple MacMini5,1 */
 112         { USB_DEVICE(0x05ac, 0x8281) },
 113
 114         /* AVM BlueFRITZ! USB v2.0 */
 115         { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE },
 116
 117         /* Bluetooth Ultraport Module from IBM */
 118         { USB_DEVICE(0x04bf, 0x030a) },
 119
 120         /* ALPS Modules with non-standard id */
 121         { USB_DEVICE(0x044e, 0x3001) },
 122         { USB_DEVICE(0x044e, 0x3002) },
 123
 124         /* Ericsson with non-standard id */
 125         { USB_DEVICE(0x0bdb, 0x1002) },
 126
 127         /* Canyon CN-BTU1 with HID interfaces */
 128         { USB_DEVICE(0x0c10, 0x0000) },
 129
 130         /* Broadcom BCM20702A0 */
 131         { USB_DEVICE(0x413c, 0x8197) },
 132
 133         /* Broadcom BCM20702B0 (Dynex/Insignia) */
 134         { USB_DEVICE(0x19ff, 0x0239), .driver_info = BTUSB_BCM_PATCHRAM },
 135
 136         /* Broadcom BCM43142A0 (Foxconn/Lenovo) */
 137         { USB_VENDOR_AND_INTERFACE_INFO(0x105b, 0xff, 0x01, 0x01),
 138           .driver_info = BTUSB_BCM_PATCHRAM },
 139
 140         /* Broadcom BCM920703 (HTC Vive) */
 141         { USB_VENDOR_AND_INTERFACE_INFO(0x0bb4, 0xff, 0x01, 0x01),
 142           .driver_info = BTUSB_BCM_PATCHRAM },
 143
 144         /* Foxconn - Hon Hai */
 145         { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01),
 146           .driver_info = BTUSB_BCM_PATCHRAM },
 147
 148         /* Lite-On Technology - Broadcom based */
 149         { USB_VENDOR_AND_INTERFACE_INFO(0x04ca, 0xff, 0x01, 0x01),
 150           .driver_info = BTUSB_BCM_PATCHRAM },
 151
 152         /* Broadcom devices with vendor specific id */
 153         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
 154           .driver_info = BTUSB_BCM_PATCHRAM },
 155
 156         /* ASUSTek Computer - Broadcom based */
 157         { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01),
 158           .driver_info = BTUSB_BCM_PATCHRAM },
 159
 160         /* Belkin F8065bf - Broadcom based */
 161         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01),
 162           .driver_info = BTUSB_BCM_PATCHRAM },
 163
 164         /* IMC Networks - Broadcom based */
 165         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01),
 166           .driver_info = BTUSB_BCM_PATCHRAM },
 167
 168         /* Dell Computer - Broadcom based  */
 169         { USB_VENDOR_AND_INTERFACE_INFO(0x413c, 0xff, 0x01, 0x01),
 170           .driver_info = BTUSB_BCM_PATCHRAM },
 171
 172         /* Toshiba Corp - Broadcom based */
 173         { USB_VENDOR_AND_INTERFACE_INFO(0x0930, 0xff, 0x01, 0x01),
 174           .driver_info = BTUSB_BCM_PATCHRAM },
 175
 176         /* Intel Bluetooth USB Bootloader (RAM module) */
 177         { USB_DEVICE(0x8087, 0x0a5a),
 178           .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
 179
 180         { }     /* Terminating entry */
 181 };
 182
 183 MODULE_DEVICE_TABLE(usb, btusb_table);
 184
 185 static const struct usb_device_id blacklist_table[] = {
 186         /* CSR BlueCore devices */
 187         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 188
 189         /* Broadcom BCM2033 without firmware */
 190         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 191
 192         /* Broadcom BCM2045 devices */
 193         { USB_DEVICE(0x0a5c, 0x2045), .driver_info = BTUSB_BCM2045 },
 194
 195         /* Atheros 3011 with sflash firmware */
 196         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 197         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 198         { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE },
 199         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 200         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 201         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 202         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 203
 204         /* Atheros AR9285 Malbec with sflash firmware */
 205         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 206
 207         /* Atheros 3012 with sflash firmware */
 208         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 209         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 210         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 211         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 212         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 213         { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
 214         { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
 215         { USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 },
 216         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 217         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 218         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 219         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 220         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 221         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 222         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 223         { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
 224         { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
 225         { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
 226         { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 },
 227         { USB_DEVICE(0x04ca, 0x3018), .driver_info = BTUSB_ATH3012 },
 228         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 229         { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
 230         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 231         { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
 232         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 233         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 234         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 235         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 236         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 237         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
 238         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 239         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 240         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 241         { USB_DEVICE(0x0cf3, 0x817b), .driver_info = BTUSB_ATH3012 },
 242         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 243         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 244         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 245         { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 },
 246         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 247         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 248         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 249         { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 },
 250         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 251         { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
 252         { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
 253         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
 254         { USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 },
 255         { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
 256         { USB_DEVICE(0x13d3, 0x3487), .driver_info = BTUSB_ATH3012 },
 257         { USB_DEVICE(0x13d3, 0x3490), .driver_info = BTUSB_ATH3012 },
 258
 259         /* Atheros AR5BBU12 with sflash firmware */
 260         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 261
 262         /* Atheros AR5BBU12 with sflash firmware */
 263         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 264         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 265
 266         /* QCA ROME chipset */
 267         { USB_DEVICE(0x0cf3, 0xe007), .driver_info = BTUSB_QCA_ROME },
 268         { USB_DEVICE(0x0cf3, 0xe009), .driver_info = BTUSB_QCA_ROME },
 269         { USB_DEVICE(0x0cf3, 0xe010), .driver_info = BTUSB_QCA_ROME },
 270         { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME },
 271         { USB_DEVICE(0x0cf3, 0xe301), .driver_info = BTUSB_QCA_ROME },
 272         { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME },
 273         { USB_DEVICE(0x0489, 0xe092), .driver_info = BTUSB_QCA_ROME },
 274         { USB_DEVICE(0x0489, 0xe09f), .driver_info = BTUSB_QCA_ROME },
 275         { USB_DEVICE(0x0489, 0xe0a2), .driver_info = BTUSB_QCA_ROME },
 276         { USB_DEVICE(0x04ca, 0x3011), .driver_info = BTUSB_QCA_ROME },
 277         { USB_DEVICE(0x04ca, 0x3015), .driver_info = BTUSB_QCA_ROME },
 278         { USB_DEVICE(0x04ca, 0x3016), .driver_info = BTUSB_QCA_ROME },
 279         { USB_DEVICE(0x04ca, 0x301a), .driver_info = BTUSB_QCA_ROME },
 280         { USB_DEVICE(0x13d3, 0x3496), .driver_info = BTUSB_QCA_ROME },
 281
 282         /* Broadcom BCM2035 */
 283         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 284         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 285         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 286
 287         /* Broadcom BCM2045 */
 288         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 289         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 290
 291         /* IBM/Lenovo ThinkPad with Broadcom chip */
 292         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 293         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 294
 295         /* HP laptop with Broadcom chip */
 296         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 297
 298         /* Dell laptop with Broadcom chip */
 299         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 300
 301         /* Dell Wireless 370 and 410 devices */
 302         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 303         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 304
 305         /* Belkin F8T012 and F8T013 devices */
 306         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 307         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 308
 309         /* Asus WL-BTD202 device */
 310         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 311
 312         /* Kensington Bluetooth USB adapter */
 313         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 314
 315         /* RTX Telecom based adapters with buggy SCO support */
 316         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 317         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 318
 319         /* CONWISE Technology based adapters with buggy SCO support */
 320         { USB_DEVICE(0x0e5e, 0x6622),
 321           .driver_info = BTUSB_BROKEN_ISOC | BTUSB_CW6622},
 322
 323         /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
 324         { USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE },
 325
 326         /* Digianswer devices */
 327         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 328         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 329
 330         /* CSR BlueCore Bluetooth Sniffer */
 331         { USB_DEVICE(0x0a12, 0x0002),
 332           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 333
 334         /* Frontline ComProbe Bluetooth Sniffer */
 335         { USB_DEVICE(0x16d3, 0x0002),
 336           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 337
 338         /* Marvell Bluetooth devices */
 339         { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
 340         { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
 341         { USB_DEVICE(0x1286, 0x204e), .driver_info = BTUSB_MARVELL },
 342
 343         /* Intel Bluetooth devices */
 344         { USB_DEVICE(0x8087, 0x0025), .driver_info = BTUSB_INTEL_NEW },
 345         { USB_DEVICE(0x8087, 0x0026), .driver_info = BTUSB_INTEL_NEW },
 346         { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR },
 347         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 348         { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
 349         { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_NEW },
 350         { USB_DEVICE(0x8087, 0x0aa7), .driver_info = BTUSB_INTEL },
 351         { USB_DEVICE(0x8087, 0x0aaa), .driver_info = BTUSB_INTEL_NEW },
 352
 353         /* Other Intel Bluetooth devices */
 354         { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01),
 355           .driver_info = BTUSB_IGNORE },
 356
 357         /* Realtek Bluetooth devices */
 358         { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01),
 359           .driver_info = BTUSB_REALTEK },
 360
 361         /* Additional Realtek 8723AE Bluetooth devices */
 362         { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK },
 363         { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK },
 364
 365         /* Additional Realtek 8723BE Bluetooth devices */
 366         { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK },
 367         { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK },
 368         { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
 369         { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
 370         { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },
 371         { USB_DEVICE(0x13d3, 0x3494), .driver_info = BTUSB_REALTEK },
 372
 373         /* Additional Realtek 8723BU Bluetooth devices */
 374         { USB_DEVICE(0x7392, 0xa611), .driver_info = BTUSB_REALTEK },
 375
 376         /* Additional Realtek 8723DE Bluetooth devices */
 377         { USB_DEVICE(0x2ff8, 0xb011), .driver_info = BTUSB_REALTEK },
 378
 379         /* Additional Realtek 8821AE Bluetooth devices */
 380         { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
 381         { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },
 382         { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK },
 383         { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK },
 384         { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK },
 385
 386         /* Additional Realtek 8822BE Bluetooth devices */
 387         { USB_DEVICE(0x13d3, 0x3526), .driver_info = BTUSB_REALTEK },
 388         { USB_DEVICE(0x0b05, 0x185c), .driver_info = BTUSB_REALTEK },
 389
 390         /* Silicon Wave based devices */
 391         { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE },
 392
 393         { }     /* Terminating entry */
 394 };
 395
 396 /* The Bluetooth USB module build into some devices needs to be reset on resume,
 397  * this is a problem with the platform (likely shutting off all power) not with
 398  * the module itself. So we use a DMI list to match known broken platforms.
 399  */
 400 static const struct dmi_system_id btusb_needs_reset_resume_table[] = {
 401         {
 402                 /* Dell OptiPlex 3060 (QCA ROME device 0cf3:e007) */
 403                 .matches = {
 404                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 405                         DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 3060"),
 406                 },
 407         },
 408         {
 409                 /* Dell XPS 9360 (QCA ROME device 0cf3:e300) */
 410                 .matches = {
 411                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 412                         DMI_MATCH(DMI_PRODUCT_NAME, "XPS 13 9360"),
 413                 },
 414         },
 415         {
 416                 /* Dell Inspiron 5565 (QCA ROME device 0cf3:e009) */
 417                 .matches = {
 418                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 419                         DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5565"),
 420                 },
 421         },
 422         {}
 423 };
 424
 425 #define BTUSB_MAX_ISOC_FRAMES   10
 426
 427 #define BTUSB_INTR_RUNNING      0
 428 #define BTUSB_BULK_RUNNING      1
 429 #define BTUSB_ISOC_RUNNING      2
 430 #define BTUSB_SUSPENDING        3
 431 #define BTUSB_DID_ISO_RESUME    4
 432 #define BTUSB_BOOTLOADER        5
 433 #define BTUSB_DOWNLOADING       6
 434 #define BTUSB_FIRMWARE_LOADED   7
 435 #define BTUSB_FIRMWARE_FAILED   8
 436 #define BTUSB_BOOTING           9
 437 #define BTUSB_DIAG_RUNNING      10
 438 #define BTUSB_OOB_WAKE_ENABLED  11
 439
 440 struct btusb_data {
 441         struct hci_dev       *hdev;
 442         struct usb_device    *udev;
 443         struct usb_interface *intf;
 444         struct usb_interface *isoc;
 445         struct usb_interface *diag;
 446         unsigned isoc_ifnum;
 447
 448         unsigned long flags;
 449
 450         struct work_struct work;
 451         struct work_struct waker;
 452
 453         struct usb_anchor deferred;
 454         struct usb_anchor tx_anchor;
 455         int tx_in_flight;
 456         spinlock_t txlock;
 457
 458         struct usb_anchor intr_anchor;
 459         struct usb_anchor bulk_anchor;
 460         struct usb_anchor isoc_anchor;
 461         struct usb_anchor diag_anchor;
 462         spinlock_t rxlock;
 463
 464         struct sk_buff *evt_skb;
 465         struct sk_buff *acl_skb;
 466         struct sk_buff *sco_skb;
 467
 468         struct usb_endpoint_descriptor *intr_ep;
 469         struct usb_endpoint_descriptor *bulk_tx_ep;
 470         struct usb_endpoint_descriptor *bulk_rx_ep;
 471         struct usb_endpoint_descriptor *isoc_tx_ep;
 472         struct usb_endpoint_descriptor *isoc_rx_ep;
 473         struct usb_endpoint_descriptor *diag_tx_ep;
 474         struct usb_endpoint_descriptor *diag_rx_ep;
 475
 476         __u8 cmdreq_type;
 477         __u8 cmdreq;
 478
 479         unsigned int sco_num;
 480         int isoc_altsetting;
 481         int suspend_count;
 482
 483         int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
 484         int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
 485
 486         int (*setup_on_usb)(struct hci_dev *hdev);
 487
 488         int oob_wake_irq;   /* irq for out-of-band wake-on-bt */
 489 };
 490
 491 static inline void btusb_free_frags(struct btusb_data *data)
 492 {
 493         unsigned long flags;
 494
 495         spin_lock_irqsave(&data->rxlock, flags);
 496
 497         kfree_skb(data->evt_skb);
 498         data->evt_skb = NULL;
 499
 500         kfree_skb(data->acl_skb);
 501         data->acl_skb = NULL;
 502
 503         kfree_skb(data->sco_skb);
 504         data->sco_skb = NULL;
 505
 506         spin_unlock_irqrestore(&data->rxlock, flags);
 507 }
 508
 509 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
 510 {
 511         struct sk_buff *skb;
 512         int err = 0;
 513
 514         spin_lock(&data->rxlock);
 515         skb = data->evt_skb;
 516
 517         while (count) {
 518                 int len;
 519
 520                 if (!skb) {
 521                         skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
 522                         if (!skb) {
 523                                 err = -ENOMEM;
 524                                 break;
 525                         }
 526
 527                         hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
 528                         hci_skb_expect(skb) = HCI_EVENT_HDR_SIZE;
 529                 }
 530
 531                 len = min_t(uint, hci_skb_expect(skb), count);
 532                 skb_put_data(skb, buffer, len);
 533
 534                 count -= len;
 535                 buffer += len;
 536                 hci_skb_expect(skb) -= len;
 537
 538                 if (skb->len == HCI_EVENT_HDR_SIZE) {
 539                         /* Complete event header */
 540                         hci_skb_expect(skb) = hci_event_hdr(skb)->plen;
 541
 542                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 543                                 kfree_skb(skb);
 544                                 skb = NULL;
 545
 546                                 err = -EILSEQ;
 547                                 break;
 548                         }
 549                 }
 550
 551                 if (!hci_skb_expect(skb)) {
 552                         /* Complete frame */
 553                         data->recv_event(data->hdev, skb);
 554                         skb = NULL;
 555                 }
 556         }
 557
 558         data->evt_skb = skb;
 559         spin_unlock(&data->rxlock);
 560
 561         return err;
 562 }
 563
 564 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
 565 {
 566         struct sk_buff *skb;
 567         int err = 0;
 568
 569         spin_lock(&data->rxlock);
 570         skb = data->acl_skb;
 571
 572         while (count) {
 573                 int len;
 574
 575                 if (!skb) {
 576                         skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
 577                         if (!skb) {
 578                                 err = -ENOMEM;
 579                                 break;
 580                         }
 581
 582                         hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT;
 583                         hci_skb_expect(skb) = HCI_ACL_HDR_SIZE;
 584                 }
 585
 586                 len = min_t(uint, hci_skb_expect(skb), count);
 587                 skb_put_data(skb, buffer, len);
 588
 589                 count -= len;
 590                 buffer += len;
 591                 hci_skb_expect(skb) -= len;
 592
 593                 if (skb->len == HCI_ACL_HDR_SIZE) {
 594                         __le16 dlen = hci_acl_hdr(skb)->dlen;
 595
 596                         /* Complete ACL header */
 597                         hci_skb_expect(skb) = __le16_to_cpu(dlen);
 598
 599                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 600                                 kfree_skb(skb);
 601                                 skb = NULL;
 602
 603                                 err = -EILSEQ;
 604                                 break;
 605                         }
 606                 }
 607
 608                 if (!hci_skb_expect(skb)) {
 609                         /* Complete frame */
 610                         hci_recv_frame(data->hdev, skb);
 611                         skb = NULL;
 612                 }
 613         }
 614
 615         data->acl_skb = skb;
 616         spin_unlock(&data->rxlock);
 617
 618         return err;
 619 }
 620
 621 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
 622 {
 623         struct sk_buff *skb;
 624         int err = 0;
 625
 626         spin_lock(&data->rxlock);
 627         skb = data->sco_skb;
 628
 629         while (count) {
 630                 int len;
 631
 632                 if (!skb) {
 633                         skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
 634                         if (!skb) {
 635                                 err = -ENOMEM;
 636                                 break;
 637                         }
 638
 639                         hci_skb_pkt_type(skb) = HCI_SCODATA_PKT;
 640                         hci_skb_expect(skb) = HCI_SCO_HDR_SIZE;
 641                 }
 642
 643                 len = min_t(uint, hci_skb_expect(skb), count);
 644                 skb_put_data(skb, buffer, len);
 645
 646                 count -= len;
 647                 buffer += len;
 648                 hci_skb_expect(skb) -= len;
 649
 650                 if (skb->len == HCI_SCO_HDR_SIZE) {
 651                         /* Complete SCO header */
 652                         hci_skb_expect(skb) = hci_sco_hdr(skb)->dlen;
 653
 654                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 655                                 kfree_skb(skb);
 656                                 skb = NULL;
 657
 658                                 err = -EILSEQ;
 659                                 break;
 660                         }
 661                 }
 662
 663                 if (!hci_skb_expect(skb)) {
 664                         /* Complete frame */
 665                         hci_recv_frame(data->hdev, skb);
 666                         skb = NULL;
 667                 }
 668         }
 669
 670         data->sco_skb = skb;
 671         spin_unlock(&data->rxlock);
 672
 673         return err;
 674 }
 675
 676 static void btusb_intr_complete(struct urb *urb)
 677 {
 678         struct hci_dev *hdev = urb->context;
 679         struct btusb_data *data = hci_get_drvdata(hdev);
 680         int err;
 681
 682         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 683                urb->actual_length);
 684
 685         if (!test_bit(HCI_RUNNING, &hdev->flags))
 686                 return;
 687
 688         if (urb->status == 0) {
 689                 hdev->stat.byte_rx += urb->actual_length;
 690
 691                 if (btusb_recv_intr(data, urb->transfer_buffer,
 692                                     urb->actual_length) < 0) {
 693                         bt_dev_err(hdev, "corrupted event packet");
 694                         hdev->stat.err_rx++;
 695                 }
 696         } else if (urb->status == -ENOENT) {
 697                 /* Avoid suspend failed when usb_kill_urb */
 698                 return;
 699         }
 700
 701         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 702                 return;
 703
 704         usb_mark_last_busy(data->udev);
 705         usb_anchor_urb(urb, &data->intr_anchor);
 706
 707         err = usb_submit_urb(urb, GFP_ATOMIC);
 708         if (err < 0) {
 709                 /* -EPERM: urb is being killed;
 710                  * -ENODEV: device got disconnected
 711                  */
 712                 if (err != -EPERM && err != -ENODEV)
 713                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
 714                                    urb, -err);
 715                 usb_unanchor_urb(urb);
 716         }
 717 }
 718
 719 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 720 {
 721         struct btusb_data *data = hci_get_drvdata(hdev);
 722         struct urb *urb;
 723         unsigned char *buf;
 724         unsigned int pipe;
 725         int err, size;
 726
 727         BT_DBG("%s", hdev->name);
 728
 729         if (!data->intr_ep)
 730                 return -ENODEV;
 731
 732         urb = usb_alloc_urb(0, mem_flags);
 733         if (!urb)
 734                 return -ENOMEM;
 735
 736         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 737
 738         buf = kmalloc(size, mem_flags);
 739         if (!buf) {
 740                 usb_free_urb(urb);
 741                 return -ENOMEM;
 742         }
 743
 744         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 745
 746         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 747                          btusb_intr_complete, hdev, data->intr_ep->bInterval);
 748
 749         urb->transfer_flags |= URB_FREE_BUFFER;
 750
 751         usb_anchor_urb(urb, &data->intr_anchor);
 752
 753         err = usb_submit_urb(urb, mem_flags);
 754         if (err < 0) {
 755                 if (err != -EPERM && err != -ENODEV)
 756                         bt_dev_err(hdev, "urb %p submission failed (%d)",
 757                                    urb, -err);
 758                 usb_unanchor_urb(urb);
 759         }
 760
 761         usb_free_urb(urb);
 762
 763         return err;
 764 }
 765
 766 static void btusb_bulk_complete(struct urb *urb)
 767 {
 768         struct hci_dev *hdev = urb->context;
 769         struct btusb_data *data = hci_get_drvdata(hdev);
 770         int err;
 771
 772         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 773                urb->actual_length);
 774
 775         if (!test_bit(HCI_RUNNING, &hdev->flags))
 776                 return;
 777
 778         if (urb->status == 0) {
 779                 hdev->stat.byte_rx += urb->actual_length;
 780
 781                 if (data->recv_bulk(data, urb->transfer_buffer,
 782                                     urb->actual_length) < 0) {
 783                         bt_dev_err(hdev, "corrupted ACL packet");
 784                         hdev->stat.err_rx++;
 785                 }
 786         } else if (urb->status == -ENOENT) {
 787                 /* Avoid suspend failed when usb_kill_urb */
 788                 return;
 789         }
 790
 791         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 792                 return;
 793
 794         usb_anchor_urb(urb, &data->bulk_anchor);
 795         usb_mark_last_busy(data->udev);
 796
 797         err = usb_submit_urb(urb, GFP_ATOMIC);
 798         if (err < 0) {
 799                 /* -EPERM: urb is being killed;
 800                  * -ENODEV: device got disconnected
 801                  */
 802                 if (err != -EPERM && err != -ENODEV)
 803                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
 804                                    urb, -err);
 805                 usb_unanchor_urb(urb);
 806         }
 807 }
 808
 809 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 810 {
 811         struct btusb_data *data = hci_get_drvdata(hdev);
 812         struct urb *urb;
 813         unsigned char *buf;
 814         unsigned int pipe;
 815         int err, size = HCI_MAX_FRAME_SIZE;
 816
 817         BT_DBG("%s", hdev->name);
 818
 819         if (!data->bulk_rx_ep)
 820                 return -ENODEV;
 821
 822         urb = usb_alloc_urb(0, mem_flags);
 823         if (!urb)
 824                 return -ENOMEM;
 825
 826         buf = kmalloc(size, mem_flags);
 827         if (!buf) {
 828                 usb_free_urb(urb);
 829                 return -ENOMEM;
 830         }
 831
 832         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 833
 834         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
 835                           btusb_bulk_complete, hdev);
 836
 837         urb->transfer_flags |= URB_FREE_BUFFER;
 838
 839         usb_mark_last_busy(data->udev);
 840         usb_anchor_urb(urb, &data->bulk_anchor);
 841
 842         err = usb_submit_urb(urb, mem_flags);
 843         if (err < 0) {
 844                 if (err != -EPERM && err != -ENODEV)
 845                         bt_dev_err(hdev, "urb %p submission failed (%d)",
 846                                    urb, -err);
 847                 usb_unanchor_urb(urb);
 848         }
 849
 850         usb_free_urb(urb);
 851
 852         return err;
 853 }
 854
 855 static void btusb_isoc_complete(struct urb *urb)
 856 {
 857         struct hci_dev *hdev = urb->context;
 858         struct btusb_data *data = hci_get_drvdata(hdev);
 859         int i, err;
 860
 861         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 862                urb->actual_length);
 863
 864         if (!test_bit(HCI_RUNNING, &hdev->flags))
 865                 return;
 866
 867         if (urb->status == 0) {
 868                 for (i = 0; i < urb->number_of_packets; i++) {
 869                         unsigned int offset = urb->iso_frame_desc[i].offset;
 870                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 871
 872                         if (urb->iso_frame_desc[i].status)
 873                                 continue;
 874
 875                         hdev->stat.byte_rx += length;
 876
 877                         if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
 878                                             length) < 0) {
 879                                 bt_dev_err(hdev, "corrupted SCO packet");
 880                                 hdev->stat.err_rx++;
 881                         }
 882                 }
 883         } else if (urb->status == -ENOENT) {
 884                 /* Avoid suspend failed when usb_kill_urb */
 885                 return;
 886         }
 887
 888         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 889                 return;
 890
 891         usb_anchor_urb(urb, &data->isoc_anchor);
 892
 893         err = usb_submit_urb(urb, GFP_ATOMIC);
 894         if (err < 0) {
 895                 /* -EPERM: urb is being killed;
 896                  * -ENODEV: device got disconnected
 897                  */
 898                 if (err != -EPERM && err != -ENODEV)
 899                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
 900                                    urb, -err);
 901                 usb_unanchor_urb(urb);
 902         }
 903 }
 904
 905 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 906 {
 907         int i, offset = 0;
 908
 909         BT_DBG("len %d mtu %d", len, mtu);
 910
 911         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 912                                         i++, offset += mtu, len -= mtu) {
 913                 urb->iso_frame_desc[i].offset = offset;
 914                 urb->iso_frame_desc[i].length = mtu;
 915         }
 916
 917         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 918                 urb->iso_frame_desc[i].offset = offset;
 919                 urb->iso_frame_desc[i].length = len;
 920                 i++;
 921         }
 922
 923         urb->number_of_packets = i;
 924 }
 925
 926 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 927 {
 928         struct btusb_data *data = hci_get_drvdata(hdev);
 929         struct urb *urb;
 930         unsigned char *buf;
 931         unsigned int pipe;
 932         int err, size;
 933
 934         BT_DBG("%s", hdev->name);
 935
 936         if (!data->isoc_rx_ep)
 937                 return -ENODEV;
 938
 939         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 940         if (!urb)
 941                 return -ENOMEM;
 942
 943         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 944                                                 BTUSB_MAX_ISOC_FRAMES;
 945
 946         buf = kmalloc(size, mem_flags);
 947         if (!buf) {
 948                 usb_free_urb(urb);
 949                 return -ENOMEM;
 950         }
 951
 952         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 953
 954         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 955                          hdev, data->isoc_rx_ep->bInterval);
 956
 957         urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
 958
 959         __fill_isoc_descriptor(urb, size,
 960                                le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 961
 962         usb_anchor_urb(urb, &data->isoc_anchor);
 963
 964         err = usb_submit_urb(urb, mem_flags);
 965         if (err < 0) {
 966                 if (err != -EPERM && err != -ENODEV)
 967                         bt_dev_err(hdev, "urb %p submission failed (%d)",
 968                                    urb, -err);
 969                 usb_unanchor_urb(urb);
 970         }
 971
 972         usb_free_urb(urb);
 973
 974         return err;
 975 }
 976
 977 static void btusb_diag_complete(struct urb *urb)
 978 {
 979         struct hci_dev *hdev = urb->context;
 980         struct btusb_data *data = hci_get_drvdata(hdev);
 981         int err;
 982
 983         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 984                urb->actual_length);
 985
 986         if (urb->status == 0) {
 987                 struct sk_buff *skb;
 988
 989                 skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC);
 990                 if (skb) {
 991                         skb_put_data(skb, urb->transfer_buffer,
 992                                      urb->actual_length);
 993                         hci_recv_diag(hdev, skb);
 994                 }
 995         } else if (urb->status == -ENOENT) {
 996                 /* Avoid suspend failed when usb_kill_urb */
 997                 return;
 998         }
 999
1000         if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags))
1001                 return;
1002
1003         usb_anchor_urb(urb, &data->diag_anchor);
1004         usb_mark_last_busy(data->udev);
1005
1006         err = usb_submit_urb(urb, GFP_ATOMIC);
1007         if (err < 0) {
1008                 /* -EPERM: urb is being killed;
1009                  * -ENODEV: device got disconnected
1010                  */
1011                 if (err != -EPERM && err != -ENODEV)
1012                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1013                                    urb, -err);
1014                 usb_unanchor_urb(urb);
1015         }
1016 }
1017
1018 static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags)
1019 {
1020         struct btusb_data *data = hci_get_drvdata(hdev);
1021         struct urb *urb;
1022         unsigned char *buf;
1023         unsigned int pipe;
1024         int err, size = HCI_MAX_FRAME_SIZE;
1025
1026         BT_DBG("%s", hdev->name);
1027
1028         if (!data->diag_rx_ep)
1029                 return -ENODEV;
1030
1031         urb = usb_alloc_urb(0, mem_flags);
1032         if (!urb)
1033                 return -ENOMEM;
1034
1035         buf = kmalloc(size, mem_flags);
1036         if (!buf) {
1037                 usb_free_urb(urb);
1038                 return -ENOMEM;
1039         }
1040
1041         pipe = usb_rcvbulkpipe(data->udev, data->diag_rx_ep->bEndpointAddress);
1042
1043         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
1044                           btusb_diag_complete, hdev);
1045
1046         urb->transfer_flags |= URB_FREE_BUFFER;
1047
1048         usb_mark_last_busy(data->udev);
1049         usb_anchor_urb(urb, &data->diag_anchor);
1050
1051         err = usb_submit_urb(urb, mem_flags);
1052         if (err < 0) {
1053                 if (err != -EPERM && err != -ENODEV)
1054                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1055                                    urb, -err);
1056                 usb_unanchor_urb(urb);
1057         }
1058
1059         usb_free_urb(urb);
1060
1061         return err;
1062 }
1063
1064 static void btusb_tx_complete(struct urb *urb)
1065 {
1066         struct sk_buff *skb = urb->context;
1067         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1068         struct btusb_data *data = hci_get_drvdata(hdev);
1069
1070         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1071                urb->actual_length);
1072
1073         if (!test_bit(HCI_RUNNING, &hdev->flags))
1074                 goto done;
1075
1076         if (!urb->status)
1077                 hdev->stat.byte_tx += urb->transfer_buffer_length;
1078         else
1079                 hdev->stat.err_tx++;
1080
1081 done:
1082         spin_lock(&data->txlock);
1083         data->tx_in_flight--;
1084         spin_unlock(&data->txlock);
1085
1086         kfree(urb->setup_packet);
1087
1088         kfree_skb(skb);
1089 }
1090
1091 static void btusb_isoc_tx_complete(struct urb *urb)
1092 {
1093         struct sk_buff *skb = urb->context;
1094         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1095
1096         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1097                urb->actual_length);
1098
1099         if (!test_bit(HCI_RUNNING, &hdev->flags))
1100                 goto done;
1101
1102         if (!urb->status)
1103                 hdev->stat.byte_tx += urb->transfer_buffer_length;
1104         else
1105                 hdev->stat.err_tx++;
1106
1107 done:
1108         kfree(urb->setup_packet);
1109
1110         kfree_skb(skb);
1111 }
1112
1113 static int btusb_open(struct hci_dev *hdev)
1114 {
1115         struct btusb_data *data = hci_get_drvdata(hdev);
1116         int err;
1117
1118         BT_DBG("%s", hdev->name);
1119
1120         err = usb_autopm_get_interface(data->intf);
1121         if (err < 0)
1122                 return err;
1123
1124         /* Patching USB firmware files prior to starting any URBs of HCI path
1125          * It is more safe to use USB bulk channel for downloading USB patch
1126          */
1127         if (data->setup_on_usb) {
1128                 err = data->setup_on_usb(hdev);
1129                 if (err < 0)
1130                         return err;
1131         }
1132
1133         data->intf->needs_remote_wakeup = 1;
1134         /* device specific wakeup source enabled and required for USB
1135          * remote wakeup while host is suspended
1136          */
1137         device_wakeup_enable(&data->udev->dev);
1138
1139         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
1140                 goto done;
1141
1142         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
1143         if (err < 0)
1144                 goto failed;
1145
1146         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1147         if (err < 0) {
1148                 usb_kill_anchored_urbs(&data->intr_anchor);
1149                 goto failed;
1150         }
1151
1152         set_bit(BTUSB_BULK_RUNNING, &data->flags);
1153         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1154
1155         if (data->diag) {
1156                 if (!btusb_submit_diag_urb(hdev, GFP_KERNEL))
1157                         set_bit(BTUSB_DIAG_RUNNING, &data->flags);
1158         }
1159
1160 done:
1161         usb_autopm_put_interface(data->intf);
1162         return 0;
1163
1164 failed:
1165         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1166         usb_autopm_put_interface(data->intf);
1167         return err;
1168 }
1169
1170 static void btusb_stop_traffic(struct btusb_data *data)
1171 {
1172         usb_kill_anchored_urbs(&data->intr_anchor);
1173         usb_kill_anchored_urbs(&data->bulk_anchor);
1174         usb_kill_anchored_urbs(&data->isoc_anchor);
1175         usb_kill_anchored_urbs(&data->diag_anchor);
1176 }
1177
1178 static int btusb_close(struct hci_dev *hdev)
1179 {
1180         struct btusb_data *data = hci_get_drvdata(hdev);
1181         int err;
1182
1183         BT_DBG("%s", hdev->name);
1184
1185         cancel_work_sync(&data->work);
1186         cancel_work_sync(&data->waker);
1187
1188         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1189         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1190         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1191         clear_bit(BTUSB_DIAG_RUNNING, &data->flags);
1192
1193         btusb_stop_traffic(data);
1194         btusb_free_frags(data);
1195
1196         err = usb_autopm_get_interface(data->intf);
1197         if (err < 0)
1198                 goto failed;
1199
1200         data->intf->needs_remote_wakeup = 0;
1201         device_wakeup_disable(&data->udev->dev);
1202         usb_autopm_put_interface(data->intf);
1203
1204 failed:
1205         usb_scuttle_anchored_urbs(&data->deferred);
1206         return 0;
1207 }
1208
1209 static int btusb_flush(struct hci_dev *hdev)
1210 {
1211         struct btusb_data *data = hci_get_drvdata(hdev);
1212
1213         BT_DBG("%s", hdev->name);
1214
1215         usb_kill_anchored_urbs(&data->tx_anchor);
1216         btusb_free_frags(data);
1217
1218         return 0;
1219 }
1220
1221 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
1222 {
1223         struct btusb_data *data = hci_get_drvdata(hdev);
1224         struct usb_ctrlrequest *dr;
1225         struct urb *urb;
1226         unsigned int pipe;
1227
1228         urb = usb_alloc_urb(0, GFP_KERNEL);
1229         if (!urb)
1230                 return ERR_PTR(-ENOMEM);
1231
1232         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
1233         if (!dr) {
1234                 usb_free_urb(urb);
1235                 return ERR_PTR(-ENOMEM);
1236         }
1237
1238         dr->bRequestType = data->cmdreq_type;
1239         dr->bRequest     = data->cmdreq;
1240         dr->wIndex       = 0;
1241         dr->wValue       = 0;
1242         dr->wLength      = __cpu_to_le16(skb->len);
1243
1244         pipe = usb_sndctrlpipe(data->udev, 0x00);
1245
1246         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
1247                              skb->data, skb->len, btusb_tx_complete, skb);
1248
1249         skb->dev = (void *)hdev;
1250
1251         return urb;
1252 }
1253
1254 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
1255 {
1256         struct btusb_data *data = hci_get_drvdata(hdev);
1257         struct urb *urb;
1258         unsigned int pipe;
1259
1260         if (!data->bulk_tx_ep)
1261                 return ERR_PTR(-ENODEV);
1262
1263         urb = usb_alloc_urb(0, GFP_KERNEL);
1264         if (!urb)
1265                 return ERR_PTR(-ENOMEM);
1266
1267         pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1268
1269         usb_fill_bulk_urb(urb, data->udev, pipe,
1270                           skb->data, skb->len, btusb_tx_complete, skb);
1271
1272         skb->dev = (void *)hdev;
1273
1274         return urb;
1275 }
1276
1277 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1278 {
1279         struct btusb_data *data = hci_get_drvdata(hdev);
1280         struct urb *urb;
1281         unsigned int pipe;
1282
1283         if (!data->isoc_tx_ep)
1284                 return ERR_PTR(-ENODEV);
1285
1286         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1287         if (!urb)
1288                 return ERR_PTR(-ENOMEM);
1289
1290         pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1291
1292         usb_fill_int_urb(urb, data->udev, pipe,
1293                          skb->data, skb->len, btusb_isoc_tx_complete,
1294                          skb, data->isoc_tx_ep->bInterval);
1295
1296         urb->transfer_flags  = URB_ISO_ASAP;
1297
1298         __fill_isoc_descriptor(urb, skb->len,
1299                                le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1300
1301         skb->dev = (void *)hdev;
1302
1303         return urb;
1304 }
1305
1306 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1307 {
1308         struct btusb_data *data = hci_get_drvdata(hdev);
1309         int err;
1310
1311         usb_anchor_urb(urb, &data->tx_anchor);
1312
1313         err = usb_submit_urb(urb, GFP_KERNEL);
1314         if (err < 0) {
1315                 if (err != -EPERM && err != -ENODEV)
1316                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1317                                    urb, -err);
1318                 kfree(urb->setup_packet);
1319                 usb_unanchor_urb(urb);
1320         } else {
1321                 usb_mark_last_busy(data->udev);
1322         }
1323
1324         usb_free_urb(urb);
1325         return err;
1326 }
1327
1328 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1329 {
1330         struct btusb_data *data = hci_get_drvdata(hdev);
1331         unsigned long flags;
1332         bool suspending;
1333
1334         spin_lock_irqsave(&data->txlock, flags);
1335         suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1336         if (!suspending)
1337                 data->tx_in_flight++;
1338         spin_unlock_irqrestore(&data->txlock, flags);
1339
1340         if (!suspending)
1341                 return submit_tx_urb(hdev, urb);
1342
1343         usb_anchor_urb(urb, &data->deferred);
1344         schedule_work(&data->waker);
1345
1346         usb_free_urb(urb);
1347         return 0;
1348 }
1349
1350 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1351 {
1352         struct urb *urb;
1353
1354         BT_DBG("%s", hdev->name);
1355
1356         switch (hci_skb_pkt_type(skb)) {
1357         case HCI_COMMAND_PKT:
1358                 urb = alloc_ctrl_urb(hdev, skb);
1359                 if (IS_ERR(urb))
1360                         return PTR_ERR(urb);
1361
1362                 hdev->stat.cmd_tx++;
1363                 return submit_or_queue_tx_urb(hdev, urb);
1364
1365         case HCI_ACLDATA_PKT:
1366                 urb = alloc_bulk_urb(hdev, skb);
1367                 if (IS_ERR(urb))
1368                         return PTR_ERR(urb);
1369
1370                 hdev->stat.acl_tx++;
1371                 return submit_or_queue_tx_urb(hdev, urb);
1372
1373         case HCI_SCODATA_PKT:
1374                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1375                         return -ENODEV;
1376
1377                 urb = alloc_isoc_urb(hdev, skb);
1378                 if (IS_ERR(urb))
1379                         return PTR_ERR(urb);
1380
1381                 hdev->stat.sco_tx++;
1382                 return submit_tx_urb(hdev, urb);
1383         }
1384
1385         return -EILSEQ;
1386 }
1387
1388 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1389 {
1390         struct btusb_data *data = hci_get_drvdata(hdev);
1391
1392         BT_DBG("%s evt %d", hdev->name, evt);
1393
1394         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1395                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1396                 schedule_work(&data->work);
1397         }
1398 }
1399
1400 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1401 {
1402         struct btusb_data *data = hci_get_drvdata(hdev);
1403         struct usb_interface *intf = data->isoc;
1404         struct usb_endpoint_descriptor *ep_desc;
1405         int i, err;
1406
1407         if (!data->isoc)
1408                 return -ENODEV;
1409
1410         err = usb_set_interface(data->udev, data->isoc_ifnum, altsetting);
1411         if (err < 0) {
1412                 bt_dev_err(hdev, "setting interface failed (%d)", -err);
1413                 return err;
1414         }
1415
1416         data->isoc_altsetting = altsetting;
1417
1418         data->isoc_tx_ep = NULL;
1419         data->isoc_rx_ep = NULL;
1420
1421         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1422                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1423
1424                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1425                         data->isoc_tx_ep = ep_desc;
1426                         continue;
1427                 }
1428
1429                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1430                         data->isoc_rx_ep = ep_desc;
1431                         continue;
1432                 }
1433         }
1434
1435         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1436                 bt_dev_err(hdev, "invalid SCO descriptors");
1437                 return -ENODEV;
1438         }
1439
1440         return 0;
1441 }
1442
1443 static void btusb_work(struct work_struct *work)
1444 {
1445         struct btusb_data *data = container_of(work, struct btusb_data, work);
1446         struct hci_dev *hdev = data->hdev;
1447         int new_alts;
1448         int err;
1449
1450         if (data->sco_num > 0) {
1451                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1452                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1453                         if (err < 0) {
1454                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1455                                 usb_kill_anchored_urbs(&data->isoc_anchor);
1456                                 return;
1457                         }
1458
1459                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1460                 }
1461
1462                 if (hdev->voice_setting & 0x0020) {
1463                         static const int alts[3] = { 2, 4, 5 };
1464
1465                         new_alts = alts[data->sco_num - 1];
1466                 } else {
1467                         new_alts = data->sco_num;
1468                 }
1469
1470                 if (data->isoc_altsetting != new_alts) {
1471                         unsigned long flags;
1472
1473                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1474                         usb_kill_anchored_urbs(&data->isoc_anchor);
1475
1476                         /* When isochronous alternate setting needs to be
1477                          * changed, because SCO connection has been added
1478                          * or removed, a packet fragment may be left in the
1479                          * reassembling state. This could lead to wrongly
1480                          * assembled fragments.
1481                          *
1482                          * Clear outstanding fragment when selecting a new
1483                          * alternate setting.
1484                          */
1485                         spin_lock_irqsave(&data->rxlock, flags);
1486                         kfree_skb(data->sco_skb);
1487                         data->sco_skb = NULL;
1488                         spin_unlock_irqrestore(&data->rxlock, flags);
1489
1490                         if (__set_isoc_interface(hdev, new_alts) < 0)
1491                                 return;
1492                 }
1493
1494                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1495                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1496                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1497                         else
1498                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1499                 }
1500         } else {
1501                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1502                 usb_kill_anchored_urbs(&data->isoc_anchor);
1503
1504                 __set_isoc_interface(hdev, 0);
1505                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1506                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1507         }
1508 }
1509
1510 static void btusb_waker(struct work_struct *work)
1511 {
1512         struct btusb_data *data = container_of(work, struct btusb_data, waker);
1513         int err;
1514
1515         err = usb_autopm_get_interface(data->intf);
1516         if (err < 0)
1517                 return;
1518
1519         usb_autopm_put_interface(data->intf);
1520 }
1521
1522 static int btusb_setup_bcm92035(struct hci_dev *hdev)
1523 {
1524         struct sk_buff *skb;
1525         u8 val = 0x00;
1526
1527         BT_DBG("%s", hdev->name);
1528
1529         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1530         if (IS_ERR(skb))
1531                 bt_dev_err(hdev, "BCM92035 command failed (%ld)", PTR_ERR(skb));
1532         else
1533                 kfree_skb(skb);
1534
1535         return 0;
1536 }
1537
1538 static int btusb_setup_csr(struct hci_dev *hdev)
1539 {
1540         struct hci_rp_read_local_version *rp;
1541         struct sk_buff *skb;
1542
1543         BT_DBG("%s", hdev->name);
1544
1545         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1546                              HCI_INIT_TIMEOUT);
1547         if (IS_ERR(skb)) {
1548                 int err = PTR_ERR(skb);
1549                 bt_dev_err(hdev, "CSR: Local version failed (%d)", err);
1550                 return err;
1551         }
1552
1553         if (skb->len != sizeof(struct hci_rp_read_local_version)) {
1554                 bt_dev_err(hdev, "CSR: Local version length mismatch");
1555                 kfree_skb(skb);
1556                 return -EIO;
1557         }
1558
1559         rp = (struct hci_rp_read_local_version *)skb->data;
1560
1561         /* Detect controllers which aren't real CSR ones. */
1562         if (le16_to_cpu(rp->manufacturer) != 10 ||
1563             le16_to_cpu(rp->lmp_subver) == 0x0c5c) {
1564                 /* Clear the reset quirk since this is not an actual
1565                  * early Bluetooth 1.1 device from CSR.
1566                  */
1567                 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1568
1569                 /* These fake CSR controllers have all a broken
1570                  * stored link key handling and so just disable it.
1571                  */
1572                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
1573         }
1574
1575         kfree_skb(skb);
1576
1577         return 0;
1578 }
1579
1580 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1581                                                        struct intel_version *ver)
1582 {
1583         const struct firmware *fw;
1584         char fwname[64];
1585         int ret;
1586
1587         snprintf(fwname, sizeof(fwname),
1588                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1589                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
1590                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1591                  ver->fw_build_ww, ver->fw_build_yy);
1592
1593         ret = request_firmware(&fw, fwname, &hdev->dev);
1594         if (ret < 0) {
1595                 if (ret == -EINVAL) {
1596                         BT_ERR("%s Intel firmware file request failed (%d)",
1597                                hdev->name, ret);
1598                         return NULL;
1599                 }
1600
1601                 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1602                        hdev->name, fwname, ret);
1603
1604                 /* If the correct firmware patch file is not found, use the
1605                  * default firmware patch file instead
1606                  */
1607                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1608                          ver->hw_platform, ver->hw_variant);
1609                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1610                         BT_ERR("%s failed to open default Intel fw file: %s",
1611                                hdev->name, fwname);
1612                         return NULL;
1613                 }
1614         }
1615
1616         bt_dev_info(hdev, "Intel Bluetooth firmware file: %s", fwname);
1617
1618         return fw;
1619 }
1620
1621 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1622                                       const struct firmware *fw,
1623                                       const u8 **fw_ptr, int *disable_patch)
1624 {
1625         struct sk_buff *skb;
1626         struct hci_command_hdr *cmd;
1627         const u8 *cmd_param;
1628         struct hci_event_hdr *evt = NULL;
1629         const u8 *evt_param = NULL;
1630         int remain = fw->size - (*fw_ptr - fw->data);
1631
1632         /* The first byte indicates the types of the patch command or event.
1633          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1634          * in the current firmware buffer doesn't start with 0x01 or
1635          * the size of remain buffer is smaller than HCI command header,
1636          * the firmware file is corrupted and it should stop the patching
1637          * process.
1638          */
1639         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1640                 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1641                 return -EINVAL;
1642         }
1643         (*fw_ptr)++;
1644         remain--;
1645
1646         cmd = (struct hci_command_hdr *)(*fw_ptr);
1647         *fw_ptr += sizeof(*cmd);
1648         remain -= sizeof(*cmd);
1649
1650         /* Ensure that the remain firmware data is long enough than the length
1651          * of command parameter. If not, the firmware file is corrupted.
1652          */
1653         if (remain < cmd->plen) {
1654                 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1655                 return -EFAULT;
1656         }
1657
1658         /* If there is a command that loads a patch in the firmware
1659          * file, then enable the patch upon success, otherwise just
1660          * disable the manufacturer mode, for example patch activation
1661          * is not required when the default firmware patch file is used
1662          * because there are no patch data to load.
1663          */
1664         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1665                 *disable_patch = 0;
1666
1667         cmd_param = *fw_ptr;
1668         *fw_ptr += cmd->plen;
1669         remain -= cmd->plen;
1670
1671         /* This reads the expected events when the above command is sent to the
1672          * device. Some vendor commands expects more than one events, for
1673          * example command status event followed by vendor specific event.
1674          * For this case, it only keeps the last expected event. so the command
1675          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1676          * last expected event.
1677          */
1678         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1679                 (*fw_ptr)++;
1680                 remain--;
1681
1682                 evt = (struct hci_event_hdr *)(*fw_ptr);
1683                 *fw_ptr += sizeof(*evt);
1684                 remain -= sizeof(*evt);
1685
1686                 if (remain < evt->plen) {
1687                         BT_ERR("%s Intel fw corrupted: invalid evt len",
1688                                hdev->name);
1689                         return -EFAULT;
1690                 }
1691
1692                 evt_param = *fw_ptr;
1693                 *fw_ptr += evt->plen;
1694                 remain -= evt->plen;
1695         }
1696
1697         /* Every HCI commands in the firmware file has its correspond event.
1698          * If event is not found or remain is smaller than zero, the firmware
1699          * file is corrupted.
1700          */
1701         if (!evt || !evt_param || remain < 0) {
1702                 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1703                 return -EFAULT;
1704         }
1705
1706         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1707                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1708         if (IS_ERR(skb)) {
1709                 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1710                        hdev->name, cmd->opcode, PTR_ERR(skb));
1711                 return PTR_ERR(skb);
1712         }
1713
1714         /* It ensures that the returned event matches the event data read from
1715          * the firmware file. At fist, it checks the length and then
1716          * the contents of the event.
1717          */
1718         if (skb->len != evt->plen) {
1719                 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1720                        le16_to_cpu(cmd->opcode));
1721                 kfree_skb(skb);
1722                 return -EFAULT;
1723         }
1724
1725         if (memcmp(skb->data, evt_param, evt->plen)) {
1726                 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1727                        hdev->name, le16_to_cpu(cmd->opcode));
1728                 kfree_skb(skb);
1729                 return -EFAULT;
1730         }
1731         kfree_skb(skb);
1732
1733         return 0;
1734 }
1735
1736 static int btusb_setup_intel(struct hci_dev *hdev)
1737 {
1738         struct sk_buff *skb;
1739         const struct firmware *fw;
1740         const u8 *fw_ptr;
1741         int disable_patch, err;
1742         struct intel_version ver;
1743
1744         BT_DBG("%s", hdev->name);
1745
1746         /* The controller has a bug with the first HCI command sent to it
1747          * returning number of completed commands as zero. This would stall the
1748          * command processing in the Bluetooth core.
1749          *
1750          * As a workaround, send HCI Reset command first which will reset the
1751          * number of completed commands and allow normal command processing
1752          * from now on.
1753          */
1754         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1755         if (IS_ERR(skb)) {
1756                 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1757                        hdev->name, PTR_ERR(skb));
1758                 return PTR_ERR(skb);
1759         }
1760         kfree_skb(skb);
1761
1762         /* Read Intel specific controller version first to allow selection of
1763          * which firmware file to load.
1764          *
1765          * The returned information are hardware variant and revision plus
1766          * firmware variant, revision and build number.
1767          */
1768         err = btintel_read_version(hdev, &ver);
1769         if (err)
1770                 return err;
1771
1772         bt_dev_info(hdev, "read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1773                     ver.hw_platform, ver.hw_variant, ver.hw_revision,
1774                     ver.fw_variant,  ver.fw_revision, ver.fw_build_num,
1775                     ver.fw_build_ww, ver.fw_build_yy, ver.fw_patch_num);
1776
1777         /* fw_patch_num indicates the version of patch the device currently
1778          * have. If there is no patch data in the device, it is always 0x00.
1779          * So, if it is other than 0x00, no need to patch the device again.
1780          */
1781         if (ver.fw_patch_num) {
1782                 bt_dev_info(hdev, "Intel device is already patched. "
1783                             "patch num: %02x", ver.fw_patch_num);
1784                 goto complete;
1785         }
1786
1787         /* Opens the firmware patch file based on the firmware version read
1788          * from the controller. If it fails to open the matching firmware
1789          * patch file, it tries to open the default firmware patch file.
1790          * If no patch file is found, allow the device to operate without
1791          * a patch.
1792          */
1793         fw = btusb_setup_intel_get_fw(hdev, &ver);
1794         if (!fw)
1795                 goto complete;
1796         fw_ptr = fw->data;
1797
1798         /* Enable the manufacturer mode of the controller.
1799          * Only while this mode is enabled, the driver can download the
1800          * firmware patch data and configuration parameters.
1801          */
1802         err = btintel_enter_mfg(hdev);
1803         if (err) {
1804                 release_firmware(fw);
1805                 return err;
1806         }
1807
1808         disable_patch = 1;
1809
1810         /* The firmware data file consists of list of Intel specific HCI
1811          * commands and its expected events. The first byte indicates the
1812          * type of the message, either HCI command or HCI event.
1813          *
1814          * It reads the command and its expected event from the firmware file,
1815          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1816          * the returned event is compared with the event read from the firmware
1817          * file and it will continue until all the messages are downloaded to
1818          * the controller.
1819          *
1820          * Once the firmware patching is completed successfully,
1821          * the manufacturer mode is disabled with reset and activating the
1822          * downloaded patch.
1823          *
1824          * If the firmware patching fails, the manufacturer mode is
1825          * disabled with reset and deactivating the patch.
1826          *
1827          * If the default patch file is used, no reset is done when disabling
1828          * the manufacturer.
1829          */
1830         while (fw->size > fw_ptr - fw->data) {
1831                 int ret;
1832
1833                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1834                                                  &disable_patch);
1835                 if (ret < 0)
1836                         goto exit_mfg_deactivate;
1837         }
1838
1839         release_firmware(fw);
1840
1841         if (disable_patch)
1842                 goto exit_mfg_disable;
1843
1844         /* Patching completed successfully and disable the manufacturer mode
1845          * with reset and activate the downloaded firmware patches.
1846          */
1847         err = btintel_exit_mfg(hdev, true, true);
1848         if (err)
1849                 return err;
1850
1851         bt_dev_info(hdev, "Intel firmware patch completed and activated");
1852
1853         goto complete;
1854
1855 exit_mfg_disable:
1856         /* Disable the manufacturer mode without reset */
1857         err = btintel_exit_mfg(hdev, false, false);
1858         if (err)
1859                 return err;
1860
1861         bt_dev_info(hdev, "Intel firmware patch completed");
1862
1863         goto complete;
1864
1865 exit_mfg_deactivate:
1866         release_firmware(fw);
1867
1868         /* Patching failed. Disable the manufacturer mode with reset and
1869          * deactivate the downloaded firmware patches.
1870          */
1871         err = btintel_exit_mfg(hdev, true, false);
1872         if (err)
1873                 return err;
1874
1875         bt_dev_info(hdev, "Intel firmware patch completed and deactivated");
1876
1877 complete:
1878         /* Set the event mask for Intel specific vendor events. This enables
1879          * a few extra events that are useful during general operation.
1880          */
1881         btintel_set_event_mask_mfg(hdev, false);
1882
1883         btintel_check_bdaddr(hdev);
1884         return 0;
1885 }
1886
1887 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
1888 {
1889         struct sk_buff *skb;
1890         struct hci_event_hdr *hdr;
1891         struct hci_ev_cmd_complete *evt;
1892
1893         skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_ATOMIC);
1894         if (!skb)
1895                 return -ENOMEM;
1896
1897         hdr = skb_put(skb, sizeof(*hdr));
1898         hdr->evt = HCI_EV_CMD_COMPLETE;
1899         hdr->plen = sizeof(*evt) + 1;
1900
1901         evt = skb_put(skb, sizeof(*evt));
1902         evt->ncmd = 0x01;
1903         evt->opcode = cpu_to_le16(opcode);
1904
1905         skb_put_u8(skb, 0x00);
1906
1907         hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
1908
1909         return hci_recv_frame(hdev, skb);
1910 }
1911
1912 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
1913                                  int count)
1914 {
1915         /* When the device is in bootloader mode, then it can send
1916          * events via the bulk endpoint. These events are treated the
1917          * same way as the ones received from the interrupt endpoint.
1918          */
1919         if (test_bit(BTUSB_BOOTLOADER, &data->flags))
1920                 return btusb_recv_intr(data, buffer, count);
1921
1922         return btusb_recv_bulk(data, buffer, count);
1923 }
1924
1925 static void btusb_intel_bootup(struct btusb_data *data, const void *ptr,
1926                                unsigned int len)
1927 {
1928         const struct intel_bootup *evt = ptr;
1929
1930         if (len != sizeof(*evt))
1931                 return;
1932
1933         if (test_and_clear_bit(BTUSB_BOOTING, &data->flags)) {
1934                 smp_mb__after_atomic();
1935                 wake_up_bit(&data->flags, BTUSB_BOOTING);
1936         }
1937 }
1938
1939 static void btusb_intel_secure_send_result(struct btusb_data *data,
1940                                            const void *ptr, unsigned int len)
1941 {
1942         const struct intel_secure_send_result *evt = ptr;
1943
1944         if (len != sizeof(*evt))
1945                 return;
1946
1947         if (evt->result)
1948                 set_bit(BTUSB_FIRMWARE_FAILED, &data->flags);
1949
1950         if (test_and_clear_bit(BTUSB_DOWNLOADING, &data->flags) &&
1951             test_bit(BTUSB_FIRMWARE_LOADED, &data->flags)) {
1952                 smp_mb__after_atomic();
1953                 wake_up_bit(&data->flags, BTUSB_DOWNLOADING);
1954         }
1955 }
1956
1957 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
1958 {
1959         struct btusb_data *data = hci_get_drvdata(hdev);
1960
1961         if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1962                 struct hci_event_hdr *hdr = (void *)skb->data;
1963
1964                 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
1965                     hdr->plen > 0) {
1966                         const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
1967                         unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
1968
1969                         switch (skb->data[2]) {
1970                         case 0x02:
1971                                 /* When switching to the operational firmware
1972                                  * the device sends a vendor specific event
1973                                  * indicating that the bootup completed.
1974                                  */
1975                                 btusb_intel_bootup(data, ptr, len);
1976                                 break;
1977                         case 0x06:
1978                                 /* When the firmware loading completes the
1979                                  * device sends out a vendor specific event
1980                                  * indicating the result of the firmware
1981                                  * loading.
1982                                  */
1983                                 btusb_intel_secure_send_result(data, ptr, len);
1984                                 break;
1985                         }
1986                 }
1987         }
1988
1989         return hci_recv_frame(hdev, skb);
1990 }
1991
1992 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
1993 {
1994         struct btusb_data *data = hci_get_drvdata(hdev);
1995         struct urb *urb;
1996
1997         BT_DBG("%s", hdev->name);
1998
1999         switch (hci_skb_pkt_type(skb)) {
2000         case HCI_COMMAND_PKT:
2001                 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
2002                         struct hci_command_hdr *cmd = (void *)skb->data;
2003                         __u16 opcode = le16_to_cpu(cmd->opcode);
2004
2005                         /* When in bootloader mode and the command 0xfc09
2006                          * is received, it needs to be send down the
2007                          * bulk endpoint. So allocate a bulk URB instead.
2008                          */
2009                         if (opcode == 0xfc09)
2010                                 urb = alloc_bulk_urb(hdev, skb);
2011                         else
2012                                 urb = alloc_ctrl_urb(hdev, skb);
2013
2014                         /* When the 0xfc01 command is issued to boot into
2015                          * the operational firmware, it will actually not
2016                          * send a command complete event. To keep the flow
2017                          * control working inject that event here.
2018                          */
2019                         if (opcode == 0xfc01)
2020                                 inject_cmd_complete(hdev, opcode);
2021                 } else {
2022                         urb = alloc_ctrl_urb(hdev, skb);
2023                 }
2024                 if (IS_ERR(urb))
2025                         return PTR_ERR(urb);
2026
2027                 hdev->stat.cmd_tx++;
2028                 return submit_or_queue_tx_urb(hdev, urb);
2029
2030         case HCI_ACLDATA_PKT:
2031                 urb = alloc_bulk_urb(hdev, skb);
2032                 if (IS_ERR(urb))
2033                         return PTR_ERR(urb);
2034
2035                 hdev->stat.acl_tx++;
2036                 return submit_or_queue_tx_urb(hdev, urb);
2037
2038         case HCI_SCODATA_PKT:
2039                 if (hci_conn_num(hdev, SCO_LINK) < 1)
2040                         return -ENODEV;
2041
2042                 urb = alloc_isoc_urb(hdev, skb);
2043                 if (IS_ERR(urb))
2044                         return PTR_ERR(urb);
2045
2046                 hdev->stat.sco_tx++;
2047                 return submit_tx_urb(hdev, urb);
2048         }
2049
2050         return -EILSEQ;
2051 }
2052
2053 static int btusb_setup_intel_new(struct hci_dev *hdev)
2054 {
2055         struct btusb_data *data = hci_get_drvdata(hdev);
2056         struct intel_version ver;
2057         struct intel_boot_params params;
2058         const struct firmware *fw;
2059         u32 boot_param;
2060         char fwname[64];
2061         ktime_t calltime, delta, rettime;
2062         unsigned long long duration;
2063         int err;
2064
2065         BT_DBG("%s", hdev->name);
2066
2067         /* Set the default boot parameter to 0x0 and it is updated to
2068          * SKU specific boot parameter after reading Intel_Write_Boot_Params
2069          * command while downloading the firmware.
2070          */
2071         boot_param = 0x00000000;
2072
2073         calltime = ktime_get();
2074
2075         /* Read the Intel version information to determine if the device
2076          * is in bootloader mode or if it already has operational firmware
2077          * loaded.
2078          */
2079         err = btintel_read_version(hdev, &ver);
2080         if (err)
2081                 return err;
2082
2083         /* The hardware platform number has a fixed value of 0x37 and
2084          * for now only accept this single value.
2085          */
2086         if (ver.hw_platform != 0x37) {
2087                 BT_ERR("%s: Unsupported Intel hardware platform (%u)",
2088                        hdev->name, ver.hw_platform);
2089                 return -EINVAL;
2090         }
2091
2092         /* Check for supported iBT hardware variants of this firmware
2093          * loading method.
2094          *
2095          * This check has been put in place to ensure correct forward
2096          * compatibility options when newer hardware variants come along.
2097          */
2098         switch (ver.hw_variant) {
2099         case 0x0b:      /* SfP */
2100         case 0x0c:      /* WsP */
2101         case 0x11:      /* JfP */
2102         case 0x12:      /* ThP */
2103         case 0x13:      /* HrP */
2104         case 0x14:      /* QnJ, IcP */
2105                 break;
2106         default:
2107                 BT_ERR("%s: Unsupported Intel hardware variant (%u)",
2108                        hdev->name, ver.hw_variant);
2109                 return -EINVAL;
2110         }
2111
2112         btintel_version_info(hdev, &ver);
2113
2114         /* The firmware variant determines if the device is in bootloader
2115          * mode or is running operational firmware. The value 0x06 identifies
2116          * the bootloader and the value 0x23 identifies the operational
2117          * firmware.
2118          *
2119          * When the operational firmware is already present, then only
2120          * the check for valid Bluetooth device address is needed. This
2121          * determines if the device will be added as configured or
2122          * unconfigured controller.
2123          *
2124          * It is not possible to use the Secure Boot Parameters in this
2125          * case since that command is only available in bootloader mode.
2126          */
2127         if (ver.fw_variant == 0x23) {
2128                 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2129                 btintel_check_bdaddr(hdev);
2130                 return 0;
2131         }
2132
2133         /* If the device is not in bootloader mode, then the only possible
2134          * choice is to return an error and abort the device initialization.
2135          */
2136         if (ver.fw_variant != 0x06) {
2137                 BT_ERR("%s: Unsupported Intel firmware variant (%u)",
2138                        hdev->name, ver.fw_variant);
2139                 return -ENODEV;
2140         }
2141
2142         /* Read the secure boot parameters to identify the operating
2143          * details of the bootloader.
2144          */
2145         err = btintel_read_boot_params(hdev, &params);
2146         if (err)
2147                 return err;
2148
2149         /* It is required that every single firmware fragment is acknowledged
2150          * with a command complete event. If the boot parameters indicate
2151          * that this bootloader does not send them, then abort the setup.
2152          */
2153         if (params.limited_cce != 0x00) {
2154                 BT_ERR("%s: Unsupported Intel firmware loading method (%u)",
2155                        hdev->name, params.limited_cce);
2156                 return -EINVAL;
2157         }
2158
2159         /* If the OTP has no valid Bluetooth device address, then there will
2160          * also be no valid address for the operational firmware.
2161          */
2162         if (!bacmp(&params.otp_bdaddr, BDADDR_ANY)) {
2163                 bt_dev_info(hdev, "No device address configured");
2164                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2165         }
2166
2167         /* With this Intel bootloader only the hardware variant and device
2168          * revision information are used to select the right firmware for SfP
2169          * and WsP.
2170          *
2171          * The firmware filename is ibt-<hw_variant>-<dev_revid>.sfi.
2172          *
2173          * Currently the supported hardware variants are:
2174          *   11 (0x0b) for iBT3.0 (LnP/SfP)
2175          *   12 (0x0c) for iBT3.5 (WsP)
2176          *
2177          * For ThP/JfP and for future SKU's, the FW name varies based on HW
2178          * variant, HW revision and FW revision, as these are dependent on CNVi
2179          * and RF Combination.
2180          *
2181          *   17 (0x11) for iBT3.5 (JfP)
2182          *   18 (0x12) for iBT3.5 (ThP)
2183          *
2184          * The firmware file name for these will be
2185          * ibt-<hw_variant>-<hw_revision>-<fw_revision>.sfi.
2186          *
2187          */
2188         switch (ver.hw_variant) {
2189         case 0x0b:      /* SfP */
2190         case 0x0c:      /* WsP */
2191                 snprintf(fwname, sizeof(fwname), "intel/ibt-%u-%u.sfi",
2192                          le16_to_cpu(ver.hw_variant),
2193                          le16_to_cpu(params.dev_revid));
2194                 break;
2195         case 0x11:      /* JfP */
2196         case 0x12:      /* ThP */
2197         case 0x13:      /* HrP */
2198         case 0x14:      /* QnJ, IcP */
2199                 snprintf(fwname, sizeof(fwname), "intel/ibt-%u-%u-%u.sfi",
2200                          le16_to_cpu(ver.hw_variant),
2201                          le16_to_cpu(ver.hw_revision),
2202                          le16_to_cpu(ver.fw_revision));
2203                 break;
2204         default:
2205                 BT_ERR("%s: Unsupported Intel firmware naming", hdev->name);
2206                 return -EINVAL;
2207         }
2208
2209         err = request_firmware(&fw, fwname, &hdev->dev);
2210         if (err < 0) {
2211                 BT_ERR("%s: Failed to load Intel firmware file (%d)",
2212                        hdev->name, err);
2213                 return err;
2214         }
2215
2216         bt_dev_info(hdev, "Found device firmware: %s", fwname);
2217
2218         /* Save the DDC file name for later use to apply once the firmware
2219          * downloading is done.
2220          */
2221         switch (ver.hw_variant) {
2222         case 0x0b:      /* SfP */
2223         case 0x0c:      /* WsP */
2224                 snprintf(fwname, sizeof(fwname), "intel/ibt-%u-%u.ddc",
2225                          le16_to_cpu(ver.hw_variant),
2226                          le16_to_cpu(params.dev_revid));
2227                 break;
2228         case 0x11:      /* JfP */
2229         case 0x12:      /* ThP */
2230         case 0x13:      /* HrP */
2231         case 0x14:      /* QnJ, IcP */
2232                 snprintf(fwname, sizeof(fwname), "intel/ibt-%u-%u-%u.ddc",
2233                          le16_to_cpu(ver.hw_variant),
2234                          le16_to_cpu(ver.hw_revision),
2235                          le16_to_cpu(ver.fw_revision));
2236                 break;
2237         default:
2238                 BT_ERR("%s: Unsupported Intel firmware naming", hdev->name);
2239                 return -EINVAL;
2240         }
2241
2242         if (fw->size < 644) {
2243                 BT_ERR("%s: Invalid size of firmware file (%zu)",
2244                        hdev->name, fw->size);
2245                 err = -EBADF;
2246                 goto done;
2247         }
2248
2249         set_bit(BTUSB_DOWNLOADING, &data->flags);
2250
2251         /* Start firmware downloading and get boot parameter */
2252         err = btintel_download_firmware(hdev, fw, &boot_param);
2253         if (err < 0)
2254                 goto done;
2255
2256         set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2257
2258         bt_dev_info(hdev, "Waiting for firmware download to complete");
2259
2260         /* Before switching the device into operational mode and with that
2261          * booting the loaded firmware, wait for the bootloader notification
2262          * that all fragments have been successfully received.
2263          *
2264          * When the event processing receives the notification, then the
2265          * BTUSB_DOWNLOADING flag will be cleared.
2266          *
2267          * The firmware loading should not take longer than 5 seconds
2268          * and thus just timeout if that happens and fail the setup
2269          * of this device.
2270          */
2271         err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
2272                                   TASK_INTERRUPTIBLE,
2273                                   msecs_to_jiffies(5000));
2274         if (err == -EINTR) {
2275                 BT_ERR("%s: Firmware loading interrupted", hdev->name);
2276                 goto done;
2277         }
2278
2279         if (err) {
2280                 BT_ERR("%s: Firmware loading timeout", hdev->name);
2281                 err = -ETIMEDOUT;
2282                 goto done;
2283         }
2284
2285         if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) {
2286                 BT_ERR("%s: Firmware loading failed", hdev->name);
2287                 err = -ENOEXEC;
2288                 goto done;
2289         }
2290
2291         rettime = ktime_get();
2292         delta = ktime_sub(rettime, calltime);
2293         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2294
2295         bt_dev_info(hdev, "Firmware loaded in %llu usecs", duration);
2296
2297 done:
2298         release_firmware(fw);
2299
2300         if (err < 0)
2301                 return err;
2302
2303         calltime = ktime_get();
2304
2305         set_bit(BTUSB_BOOTING, &data->flags);
2306
2307         err = btintel_send_intel_reset(hdev, boot_param);
2308         if (err)
2309                 return err;
2310
2311         /* The bootloader will not indicate when the device is ready. This
2312          * is done by the operational firmware sending bootup notification.
2313          *
2314          * Booting into operational firmware should not take longer than
2315          * 1 second. However if that happens, then just fail the setup
2316          * since something went wrong.
2317          */
2318         bt_dev_info(hdev, "Waiting for device to boot");
2319
2320         err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING,
2321                                   TASK_INTERRUPTIBLE,
2322                                   msecs_to_jiffies(1000));
2323
2324         if (err == -EINTR) {
2325                 BT_ERR("%s: Device boot interrupted", hdev->name);
2326                 return -EINTR;
2327         }
2328
2329         if (err) {
2330                 BT_ERR("%s: Device boot timeout", hdev->name);
2331                 return -ETIMEDOUT;
2332         }
2333
2334         rettime = ktime_get();
2335         delta = ktime_sub(rettime, calltime);
2336         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2337
2338         bt_dev_info(hdev, "Device booted in %llu usecs", duration);
2339
2340         clear_bit(BTUSB_BOOTLOADER, &data->flags);
2341
2342         /* Once the device is running in operational mode, it needs to apply
2343          * the device configuration (DDC) parameters.
2344          *
2345          * The device can work without DDC parameters, so even if it fails
2346          * to load the file, no need to fail the setup.
2347          */
2348         btintel_load_ddc_config(hdev, fwname);
2349
2350         /* Set the event mask for Intel specific vendor events. This enables
2351          * a few extra events that are useful during general operation. It
2352          * does not enable any debugging related events.
2353          *
2354          * The device will function correctly without these events enabled
2355          * and thus no need to fail the setup.
2356          */
2357         btintel_set_event_mask(hdev, false);
2358
2359         return 0;
2360 }
2361
2362 static int btusb_shutdown_intel(struct hci_dev *hdev)
2363 {
2364         struct sk_buff *skb;
2365         long ret;
2366
2367         /* Some platforms have an issue with BT LED when the interface is
2368          * down or BT radio is turned off, which takes 5 seconds to BT LED
2369          * goes off. This command turns off the BT LED immediately.
2370          */
2371         skb = __hci_cmd_sync(hdev, 0xfc3f, 0, NULL, HCI_INIT_TIMEOUT);
2372         if (IS_ERR(skb)) {
2373                 ret = PTR_ERR(skb);
2374                 BT_ERR("%s: turning off Intel device LED failed (%ld)",
2375                        hdev->name, ret);
2376                 return ret;
2377         }
2378         kfree_skb(skb);
2379
2380         return 0;
2381 }
2382
2383 #ifdef CONFIG_PM
2384 /* Configure an out-of-band gpio as wake-up pin, if specified in device tree */
2385 static int marvell_config_oob_wake(struct hci_dev *hdev)
2386 {
2387         struct sk_buff *skb;
2388         struct btusb_data *data = hci_get_drvdata(hdev);
2389         struct device *dev = &data->udev->dev;
2390         u16 pin, gap, opcode;
2391         int ret;
2392         u8 cmd[5];
2393
2394         /* Move on if no wakeup pin specified */
2395         if (of_property_read_u16(dev->of_node, "marvell,wakeup-pin", &pin) ||
2396             of_property_read_u16(dev->of_node, "marvell,wakeup-gap-ms", &gap))
2397                 return 0;
2398
2399         /* Vendor specific command to configure a GPIO as wake-up pin */
2400         opcode = hci_opcode_pack(0x3F, 0x59);
2401         cmd[0] = opcode & 0xFF;
2402         cmd[1] = opcode >> 8;
2403         cmd[2] = 2; /* length of parameters that follow */
2404         cmd[3] = pin;
2405         cmd[4] = gap; /* time in ms, for which wakeup pin should be asserted */
2406
2407         skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
2408         if (!skb) {
2409                 bt_dev_err(hdev, "%s: No memory\n", __func__);
2410                 return -ENOMEM;
2411         }
2412
2413         skb_put_data(skb, cmd, sizeof(cmd));
2414         hci_skb_pkt_type(skb) = HCI_COMMAND_PKT;
2415
2416         ret = btusb_send_frame(hdev, skb);
2417         if (ret) {
2418                 bt_dev_err(hdev, "%s: configuration failed\n", __func__);
2419                 kfree_skb(skb);
2420                 return ret;
2421         }
2422
2423         return 0;
2424 }
2425 #endif
2426
2427 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
2428                                     const bdaddr_t *bdaddr)
2429 {
2430         struct sk_buff *skb;
2431         u8 buf[8];
2432         long ret;
2433
2434         buf[0] = 0xfe;
2435         buf[1] = sizeof(bdaddr_t);
2436         memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
2437
2438         skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2439         if (IS_ERR(skb)) {
2440                 ret = PTR_ERR(skb);
2441                 bt_dev_err(hdev, "changing Marvell device address failed (%ld)",
2442                            ret);
2443                 return ret;
2444         }
2445         kfree_skb(skb);
2446
2447         return 0;
2448 }
2449
2450 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
2451                                     const bdaddr_t *bdaddr)
2452 {
2453         struct sk_buff *skb;
2454         u8 buf[10];
2455         long ret;
2456
2457         buf[0] = 0x01;
2458         buf[1] = 0x01;
2459         buf[2] = 0x00;
2460         buf[3] = sizeof(bdaddr_t);
2461         memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
2462
2463         skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2464         if (IS_ERR(skb)) {
2465                 ret = PTR_ERR(skb);
2466                 bt_dev_err(hdev, "Change address command failed (%ld)", ret);
2467                 return ret;
2468         }
2469         kfree_skb(skb);
2470
2471         return 0;
2472 }
2473
2474 #define QCA_DFU_PACKET_LEN      4096
2475
2476 #define QCA_GET_TARGET_VERSION  0x09
2477 #define QCA_CHECK_STATUS        0x05
2478 #define QCA_DFU_DOWNLOAD        0x01
2479
2480 #define QCA_SYSCFG_UPDATED      0x40
2481 #define QCA_PATCH_UPDATED       0x80
2482 #define QCA_DFU_TIMEOUT         3000
2483
2484 struct qca_version {
2485         __le32  rom_version;
2486         __le32  patch_version;
2487         __le32  ram_version;
2488         __le32  ref_clock;
2489         __u8    reserved[4];
2490 } __packed;
2491
2492 struct qca_rampatch_version {
2493         __le16  rom_version;
2494         __le16  patch_version;
2495 } __packed;
2496
2497 struct qca_device_info {
2498         u32     rom_version;
2499         u8      rampatch_hdr;   /* length of header in rampatch */
2500         u8      nvm_hdr;        /* length of header in NVM */
2501         u8      ver_offset;     /* offset of version structure in rampatch */
2502 };
2503
2504 static const struct qca_device_info qca_devices_table[] = {
2505         { 0x00000100, 20, 4, 10 }, /* Rome 1.0 */
2506         { 0x00000101, 20, 4, 10 }, /* Rome 1.1 */
2507         { 0x00000200, 28, 4, 18 }, /* Rome 2.0 */
2508         { 0x00000201, 28, 4, 18 }, /* Rome 2.1 */
2509         { 0x00000300, 28, 4, 18 }, /* Rome 3.0 */
2510         { 0x00000302, 28, 4, 18 }, /* Rome 3.2 */
2511 };
2512
2513 static int btusb_qca_send_vendor_req(struct usb_device *udev, u8 request,
2514                                      void *data, u16 size)
2515 {
2516         int pipe, err;
2517         u8 *buf;
2518
2519         buf = kmalloc(size, GFP_KERNEL);
2520         if (!buf)
2521                 return -ENOMEM;
2522
2523         /* Found some of USB hosts have IOT issues with ours so that we should
2524          * not wait until HCI layer is ready.
2525          */
2526         pipe = usb_rcvctrlpipe(udev, 0);
2527         err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
2528                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2529         if (err < 0) {
2530                 dev_err(&udev->dev, "Failed to access otp area (%d)", err);
2531                 goto done;
2532         }
2533
2534         memcpy(data, buf, size);
2535
2536 done:
2537         kfree(buf);
2538
2539         return err;
2540 }
2541
2542 static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
2543                                        const struct firmware *firmware,
2544                                        size_t hdr_size)
2545 {
2546         struct btusb_data *btdata = hci_get_drvdata(hdev);
2547         struct usb_device *udev = btdata->udev;
2548         size_t count, size, sent = 0;
2549         int pipe, len, err;
2550         u8 *buf;
2551
2552         buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
2553         if (!buf)
2554                 return -ENOMEM;
2555
2556         count = firmware->size;
2557
2558         size = min_t(size_t, count, hdr_size);
2559         memcpy(buf, firmware->data, size);
2560
2561         /* USB patches should go down to controller through USB path
2562          * because binary format fits to go down through USB channel.
2563          * USB control path is for patching headers and USB bulk is for
2564          * patch body.
2565          */
2566         pipe = usb_sndctrlpipe(udev, 0);
2567         err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
2568                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2569         if (err < 0) {
2570                 bt_dev_err(hdev, "Failed to send headers (%d)", err);
2571                 goto done;
2572         }
2573
2574         sent += size;
2575         count -= size;
2576
2577         while (count) {
2578                 size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
2579
2580                 memcpy(buf, firmware->data + sent, size);
2581
2582                 pipe = usb_sndbulkpipe(udev, 0x02);
2583                 err = usb_bulk_msg(udev, pipe, buf, size, &len,
2584                                    QCA_DFU_TIMEOUT);
2585                 if (err < 0) {
2586                         bt_dev_err(hdev, "Failed to send body at %zd of %zd (%d)",
2587                                    sent, firmware->size, err);
2588                         break;
2589                 }
2590
2591                 if (size != len) {
2592                         bt_dev_err(hdev, "Failed to get bulk buffer");
2593                         err = -EILSEQ;
2594                         break;
2595                 }
2596
2597                 sent  += size;
2598                 count -= size;
2599         }
2600
2601 done:
2602         kfree(buf);
2603         return err;
2604 }
2605
2606 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
2607                                          struct qca_version *ver,
2608                                          const struct qca_device_info *info)
2609 {
2610         struct qca_rampatch_version *rver;
2611         const struct firmware *fw;
2612         u32 ver_rom, ver_patch;
2613         u16 rver_rom, rver_patch;
2614         char fwname[64];
2615         int err;
2616
2617         ver_rom = le32_to_cpu(ver->rom_version);
2618         ver_patch = le32_to_cpu(ver->patch_version);
2619
2620         snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom);
2621
2622         err = request_firmware(&fw, fwname, &hdev->dev);
2623         if (err) {
2624                 bt_dev_err(hdev, "failed to request rampatch file: %s (%d)",
2625                            fwname, err);
2626                 return err;
2627         }
2628
2629         bt_dev_info(hdev, "using rampatch file: %s", fwname);
2630
2631         rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
2632         rver_rom = le16_to_cpu(rver->rom_version);
2633         rver_patch = le16_to_cpu(rver->patch_version);
2634
2635         bt_dev_info(hdev, "QCA: patch rome 0x%x build 0x%x, "
2636                     "firmware rome 0x%x build 0x%x",
2637                     rver_rom, rver_patch, ver_rom, ver_patch);
2638
2639         if (rver_rom != ver_rom || rver_patch <= ver_patch) {
2640                 bt_dev_err(hdev, "rampatch file version did not match with firmware");
2641                 err = -EINVAL;
2642                 goto done;
2643         }
2644
2645         err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
2646
2647 done:
2648         release_firmware(fw);
2649
2650         return err;
2651 }
2652
2653 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
2654                                     struct qca_version *ver,
2655                                     const struct qca_device_info *info)
2656 {
2657         const struct firmware *fw;
2658         char fwname[64];
2659         int err;
2660
2661         snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x.bin",
2662                  le32_to_cpu(ver->rom_version));
2663
2664         err = request_firmware(&fw, fwname, &hdev->dev);
2665         if (err) {
2666                 bt_dev_err(hdev, "failed to request NVM file: %s (%d)",
2667                            fwname, err);
2668                 return err;
2669         }
2670
2671         bt_dev_info(hdev, "using NVM file: %s", fwname);
2672
2673         err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
2674
2675         release_firmware(fw);
2676
2677         return err;
2678 }
2679
2680 /* identify the ROM version and check whether patches are needed */
2681 static bool btusb_qca_need_patch(struct usb_device *udev)
2682 {
2683         struct qca_version ver;
2684
2685         if (btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
2686                                       sizeof(ver)) < 0)
2687                 return false;
2688         /* only low ROM versions need patches */
2689         return !(le32_to_cpu(ver.rom_version) & ~0xffffU);
2690 }
2691
2692 static int btusb_setup_qca(struct hci_dev *hdev)
2693 {
2694         struct btusb_data *btdata = hci_get_drvdata(hdev);
2695         struct usb_device *udev = btdata->udev;
2696         const struct qca_device_info *info = NULL;
2697         struct qca_version ver;
2698         u32 ver_rom;
2699         u8 status;
2700         int i, err;
2701
2702         err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
2703                                         sizeof(ver));
2704         if (err < 0)
2705                 return err;
2706
2707         ver_rom = le32_to_cpu(ver.rom_version);
2708         /* Don't care about high ROM versions */
2709         if (ver_rom & ~0xffffU)
2710                 return 0;
2711
2712         for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
2713                 if (ver_rom == qca_devices_table[i].rom_version)
2714                         info = &qca_devices_table[i];
2715         }
2716         if (!info) {
2717                 bt_dev_err(hdev, "don't support firmware rome 0x%x", ver_rom);
2718                 return -ENODEV;
2719         }
2720
2721         err = btusb_qca_send_vendor_req(udev, QCA_CHECK_STATUS, &status,
2722                                         sizeof(status));
2723         if (err < 0)
2724                 return err;
2725
2726         if (!(status & QCA_PATCH_UPDATED)) {
2727                 err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
2728                 if (err < 0)
2729                         return err;
2730         }
2731
2732         if (!(status & QCA_SYSCFG_UPDATED)) {
2733                 err = btusb_setup_qca_load_nvm(hdev, &ver, info);
2734                 if (err < 0)
2735                         return err;
2736         }
2737
2738         return 0;
2739 }
2740
2741 #ifdef CONFIG_BT_HCIBTUSB_BCM
2742 static inline int __set_diag_interface(struct hci_dev *hdev)
2743 {
2744         struct btusb_data *data = hci_get_drvdata(hdev);
2745         struct usb_interface *intf = data->diag;
2746         int i;
2747
2748         if (!data->diag)
2749                 return -ENODEV;
2750
2751         data->diag_tx_ep = NULL;
2752         data->diag_rx_ep = NULL;
2753
2754         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2755                 struct usb_endpoint_descriptor *ep_desc;
2756
2757                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2758
2759                 if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
2760                         data->diag_tx_ep = ep_desc;
2761                         continue;
2762                 }
2763
2764                 if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
2765                         data->diag_rx_ep = ep_desc;
2766                         continue;
2767                 }
2768         }
2769
2770         if (!data->diag_tx_ep || !data->diag_rx_ep) {
2771                 bt_dev_err(hdev, "invalid diagnostic descriptors");
2772                 return -ENODEV;
2773         }
2774
2775         return 0;
2776 }
2777
2778 static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable)
2779 {
2780         struct btusb_data *data = hci_get_drvdata(hdev);
2781         struct sk_buff *skb;
2782         struct urb *urb;
2783         unsigned int pipe;
2784
2785         if (!data->diag_tx_ep)
2786                 return ERR_PTR(-ENODEV);
2787
2788         urb = usb_alloc_urb(0, GFP_KERNEL);
2789         if (!urb)
2790                 return ERR_PTR(-ENOMEM);
2791
2792         skb = bt_skb_alloc(2, GFP_KERNEL);
2793         if (!skb) {
2794                 usb_free_urb(urb);
2795                 return ERR_PTR(-ENOMEM);
2796         }
2797
2798         skb_put_u8(skb, 0xf0);
2799         skb_put_u8(skb, enable);
2800
2801         pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress);
2802
2803         usb_fill_bulk_urb(urb, data->udev, pipe,
2804                           skb->data, skb->len, btusb_tx_complete, skb);
2805
2806         skb->dev = (void *)hdev;
2807
2808         return urb;
2809 }
2810
2811 static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable)
2812 {
2813         struct btusb_data *data = hci_get_drvdata(hdev);
2814         struct urb *urb;
2815
2816         if (!data->diag)
2817                 return -ENODEV;
2818
2819         if (!test_bit(HCI_RUNNING, &hdev->flags))
2820                 return -ENETDOWN;
2821
2822         urb = alloc_diag_urb(hdev, enable);
2823         if (IS_ERR(urb))
2824                 return PTR_ERR(urb);
2825
2826         return submit_or_queue_tx_urb(hdev, urb);
2827 }
2828 #endif
2829
2830 #ifdef CONFIG_PM
2831 static irqreturn_t btusb_oob_wake_handler(int irq, void *priv)
2832 {
2833         struct btusb_data *data = priv;
2834
2835         pm_wakeup_event(&data->udev->dev, 0);
2836         pm_system_wakeup();
2837
2838         /* Disable only if not already disabled (keep it balanced) */
2839         if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
2840                 disable_irq_nosync(irq);
2841                 disable_irq_wake(irq);
2842         }
2843         return IRQ_HANDLED;
2844 }
2845
2846 static const struct of_device_id btusb_match_table[] = {
2847         { .compatible = "usb1286,204e" },
2848         { }
2849 };
2850 MODULE_DEVICE_TABLE(of, btusb_match_table);
2851
2852 /* Use an oob wakeup pin? */
2853 static int btusb_config_oob_wake(struct hci_dev *hdev)
2854 {
2855         struct btusb_data *data = hci_get_drvdata(hdev);
2856         struct device *dev = &data->udev->dev;
2857         int irq, ret;
2858
2859         clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
2860
2861         if (!of_match_device(btusb_match_table, dev))
2862                 return 0;
2863
2864         /* Move on if no IRQ specified */
2865         irq = of_irq_get_byname(dev->of_node, "wakeup");
2866         if (irq <= 0) {
2867                 bt_dev_dbg(hdev, "%s: no OOB Wakeup IRQ in DT", __func__);
2868                 return 0;
2869         }
2870
2871         ret = devm_request_irq(&hdev->dev, irq, btusb_oob_wake_handler,
2872                                0, "OOB Wake-on-BT", data);
2873         if (ret) {
2874                 bt_dev_err(hdev, "%s: IRQ request failed", __func__);
2875                 return ret;
2876         }
2877
2878         ret = device_init_wakeup(dev, true);
2879         if (ret) {
2880                 bt_dev_err(hdev, "%s: failed to init_wakeup", __func__);
2881                 return ret;
2882         }
2883
2884         data->oob_wake_irq = irq;
2885         disable_irq(irq);
2886         bt_dev_info(hdev, "OOB Wake-on-BT configured at IRQ %u", irq);
2887         return 0;
2888 }
2889 #endif
2890
2891 static void btusb_check_needs_reset_resume(struct usb_interface *intf)
2892 {
2893         if (dmi_check_system(btusb_needs_reset_resume_table))
2894                 interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME;
2895 }
2896
2897 static int btusb_probe(struct usb_interface *intf,
2898                        const struct usb_device_id *id)
2899 {
2900         struct usb_endpoint_descriptor *ep_desc;
2901         struct btusb_data *data;
2902         struct hci_dev *hdev;
2903         unsigned ifnum_base;
2904         int i, err;
2905
2906         BT_DBG("intf %p id %p", intf, id);
2907
2908         /* interface numbers are hardcoded in the spec */
2909         if (intf->cur_altsetting->desc.bInterfaceNumber != 0) {
2910                 if (!(id->driver_info & BTUSB_IFNUM_2))
2911                         return -ENODEV;
2912                 if (intf->cur_altsetting->desc.bInterfaceNumber != 2)
2913                         return -ENODEV;
2914         }
2915
2916         ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber;
2917
2918         if (!id->driver_info) {
2919                 const struct usb_device_id *match;
2920
2921                 match = usb_match_id(intf, blacklist_table);
2922                 if (match)
2923                         id = match;
2924         }
2925
2926         if (id->driver_info == BTUSB_IGNORE)
2927                 return -ENODEV;
2928
2929         if (id->driver_info & BTUSB_ATH3012) {
2930                 struct usb_device *udev = interface_to_usbdev(intf);
2931
2932                 /* Old firmware would otherwise let ath3k driver load
2933                  * patch and sysconfig files
2934                  */
2935                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001 &&
2936                     !btusb_qca_need_patch(udev))
2937                         return -ENODEV;
2938         }
2939
2940         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
2941         if (!data)
2942                 return -ENOMEM;
2943
2944         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2945                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2946
2947                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
2948                         data->intr_ep = ep_desc;
2949                         continue;
2950                 }
2951
2952                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
2953                         data->bulk_tx_ep = ep_desc;
2954                         continue;
2955                 }
2956
2957                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
2958                         data->bulk_rx_ep = ep_desc;
2959                         continue;
2960                 }
2961         }
2962
2963         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
2964                 return -ENODEV;
2965
2966         if (id->driver_info & BTUSB_AMP) {
2967                 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
2968                 data->cmdreq = 0x2b;
2969         } else {
2970                 data->cmdreq_type = USB_TYPE_CLASS;
2971                 data->cmdreq = 0x00;
2972         }
2973
2974         data->udev = interface_to_usbdev(intf);
2975         data->intf = intf;
2976
2977         INIT_WORK(&data->work, btusb_work);
2978         INIT_WORK(&data->waker, btusb_waker);
2979         init_usb_anchor(&data->deferred);
2980         init_usb_anchor(&data->tx_anchor);
2981         spin_lock_init(&data->txlock);
2982
2983         init_usb_anchor(&data->intr_anchor);
2984         init_usb_anchor(&data->bulk_anchor);
2985         init_usb_anchor(&data->isoc_anchor);
2986         init_usb_anchor(&data->diag_anchor);
2987         spin_lock_init(&data->rxlock);
2988
2989         if (id->driver_info & BTUSB_INTEL_NEW) {
2990                 data->recv_event = btusb_recv_event_intel;
2991                 data->recv_bulk = btusb_recv_bulk_intel;
2992                 set_bit(BTUSB_BOOTLOADER, &data->flags);
2993         } else {
2994                 data->recv_event = hci_recv_frame;
2995                 data->recv_bulk = btusb_recv_bulk;
2996         }
2997
2998         hdev = hci_alloc_dev();
2999         if (!hdev)
3000                 return -ENOMEM;
3001
3002         hdev->bus = HCI_USB;
3003         hci_set_drvdata(hdev, data);
3004
3005         if (id->driver_info & BTUSB_AMP)
3006                 hdev->dev_type = HCI_AMP;
3007         else
3008                 hdev->dev_type = HCI_PRIMARY;
3009
3010         data->hdev = hdev;
3011
3012         SET_HCIDEV_DEV(hdev, &intf->dev);
3013
3014         hdev->open   = btusb_open;
3015         hdev->close  = btusb_close;
3016         hdev->flush  = btusb_flush;
3017         hdev->send   = btusb_send_frame;
3018         hdev->notify = btusb_notify;
3019
3020 #ifdef CONFIG_PM
3021         err = btusb_config_oob_wake(hdev);
3022         if (err)
3023                 goto out_free_dev;
3024
3025         /* Marvell devices may need a specific chip configuration */
3026         if (id->driver_info & BTUSB_MARVELL && data->oob_wake_irq) {
3027                 err = marvell_config_oob_wake(hdev);
3028                 if (err)
3029                         goto out_free_dev;
3030         }
3031 #endif
3032         if (id->driver_info & BTUSB_CW6622)
3033                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
3034
3035         if (id->driver_info & BTUSB_BCM2045)
3036                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
3037
3038         if (id->driver_info & BTUSB_BCM92035)
3039                 hdev->setup = btusb_setup_bcm92035;
3040
3041 #ifdef CONFIG_BT_HCIBTUSB_BCM
3042         if (id->driver_info & BTUSB_BCM_PATCHRAM) {
3043                 hdev->manufacturer = 15;
3044                 hdev->setup = btbcm_setup_patchram;
3045                 hdev->set_diag = btusb_bcm_set_diag;
3046                 hdev->set_bdaddr = btbcm_set_bdaddr;
3047
3048                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
3049                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
3050         }
3051
3052         if (id->driver_info & BTUSB_BCM_APPLE) {
3053                 hdev->manufacturer = 15;
3054                 hdev->setup = btbcm_setup_apple;
3055                 hdev->set_diag = btusb_bcm_set_diag;
3056
3057                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
3058                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
3059         }
3060 #endif
3061
3062         if (id->driver_info & BTUSB_INTEL) {
3063                 hdev->manufacturer = 2;
3064                 hdev->setup = btusb_setup_intel;
3065                 hdev->shutdown = btusb_shutdown_intel;
3066                 hdev->set_diag = btintel_set_diag_mfg;
3067                 hdev->set_bdaddr = btintel_set_bdaddr;
3068                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3069                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3070                 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
3071         }
3072
3073         if (id->driver_info & BTUSB_INTEL_NEW) {
3074                 hdev->manufacturer = 2;
3075                 hdev->send = btusb_send_frame_intel;
3076                 hdev->setup = btusb_setup_intel_new;
3077                 hdev->hw_error = btintel_hw_error;
3078                 hdev->set_diag = btintel_set_diag;
3079                 hdev->set_bdaddr = btintel_set_bdaddr;
3080                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3081                 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
3082         }
3083
3084         if (id->driver_info & BTUSB_MARVELL)
3085                 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
3086
3087         if (id->driver_info & BTUSB_SWAVE) {
3088                 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
3089                 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
3090         }
3091
3092         if (id->driver_info & BTUSB_INTEL_BOOT) {
3093                 hdev->manufacturer = 2;
3094                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3095         }
3096
3097         if (id->driver_info & BTUSB_ATH3012) {
3098                 data->setup_on_usb = btusb_setup_qca;
3099                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
3100                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3101                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3102         }
3103
3104         if (id->driver_info & BTUSB_QCA_ROME) {
3105                 data->setup_on_usb = btusb_setup_qca;
3106                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
3107                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3108                 btusb_check_needs_reset_resume(intf);
3109         }
3110
3111 #ifdef CONFIG_BT_HCIBTUSB_RTL
3112         if (id->driver_info & BTUSB_REALTEK) {
3113                 hdev->setup = btrtl_setup_realtek;
3114
3115                 /* Realtek devices lose their updated firmware over suspend,
3116                  * but the USB hub doesn't notice any status change.
3117                  * Explicitly request a device reset on resume.
3118                  */
3119                 interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME;
3120         }
3121 #endif
3122
3123         if (id->driver_info & BTUSB_AMP) {
3124                 /* AMP controllers do not support SCO packets */
3125                 data->isoc = NULL;
3126         } else {
3127                 /* Interface orders are hardcoded in the specification */
3128                 data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1);
3129                 data->isoc_ifnum = ifnum_base + 1;
3130         }
3131
3132         if (!reset)
3133                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3134
3135         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
3136                 if (!disable_scofix)
3137                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
3138         }
3139
3140         if (id->driver_info & BTUSB_BROKEN_ISOC)
3141                 data->isoc = NULL;
3142
3143         if (id->driver_info & BTUSB_DIGIANSWER) {
3144                 data->cmdreq_type = USB_TYPE_VENDOR;
3145                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3146         }
3147
3148         if (id->driver_info & BTUSB_CSR) {
3149                 struct usb_device *udev = data->udev;
3150                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
3151
3152                 /* Old firmware would otherwise execute USB reset */
3153                 if (bcdDevice < 0x117)
3154                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3155
3156                 /* Fake CSR devices with broken commands */
3157                 if (bcdDevice <= 0x100 || bcdDevice == 0x134)
3158                         hdev->setup = btusb_setup_csr;
3159
3160                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3161         }
3162
3163         if (id->driver_info & BTUSB_SNIFFER) {
3164                 struct usb_device *udev = data->udev;
3165
3166                 /* New sniffer firmware has crippled HCI interface */
3167                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
3168                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3169         }
3170
3171         if (id->driver_info & BTUSB_INTEL_BOOT) {
3172                 /* A bug in the bootloader causes that interrupt interface is
3173                  * only enabled after receiving SetInterface(0, AltSetting=0).
3174                  */
3175                 err = usb_set_interface(data->udev, 0, 0);
3176                 if (err < 0) {
3177                         BT_ERR("failed to set interface 0, alt 0 %d", err);
3178                         goto out_free_dev;
3179                 }
3180         }
3181
3182         if (data->isoc) {
3183                 err = usb_driver_claim_interface(&btusb_driver,
3184                                                  data->isoc, data);
3185                 if (err < 0)
3186                         goto out_free_dev;
3187         }
3188
3189 #ifdef CONFIG_BT_HCIBTUSB_BCM
3190         if (data->diag) {
3191                 if (!usb_driver_claim_interface(&btusb_driver,
3192                                                 data->diag, data))
3193                         __set_diag_interface(hdev);
3194                 else
3195                         data->diag = NULL;
3196         }
3197 #endif
3198
3199         if (enable_autosuspend)
3200                 usb_enable_autosuspend(data->udev);
3201
3202         err = hci_register_dev(hdev);
3203         if (err < 0)
3204                 goto out_free_dev;
3205
3206         usb_set_intfdata(intf, data);
3207
3208         return 0;
3209
3210 out_free_dev:
3211         hci_free_dev(hdev);
3212         return err;
3213 }
3214
3215 static void btusb_disconnect(struct usb_interface *intf)
3216 {
3217         struct btusb_data *data = usb_get_intfdata(intf);
3218         struct hci_dev *hdev;
3219
3220         BT_DBG("intf %p", intf);
3221
3222         if (!data)
3223                 return;
3224
3225         hdev = data->hdev;
3226         usb_set_intfdata(data->intf, NULL);
3227
3228         if (data->isoc)
3229                 usb_set_intfdata(data->isoc, NULL);
3230
3231         if (data->diag)
3232                 usb_set_intfdata(data->diag, NULL);
3233
3234         hci_unregister_dev(hdev);
3235
3236         if (intf == data->intf) {
3237                 if (data->isoc)
3238                         usb_driver_release_interface(&btusb_driver, data->isoc);
3239                 if (data->diag)
3240                         usb_driver_release_interface(&btusb_driver, data->diag);
3241         } else if (intf == data->isoc) {
3242                 if (data->diag)
3243                         usb_driver_release_interface(&btusb_driver, data->diag);
3244                 usb_driver_release_interface(&btusb_driver, data->intf);
3245         } else if (intf == data->diag) {
3246                 usb_driver_release_interface(&btusb_driver, data->intf);
3247                 if (data->isoc)
3248                         usb_driver_release_interface(&btusb_driver, data->isoc);
3249         }
3250
3251         if (data->oob_wake_irq)
3252                 device_init_wakeup(&data->udev->dev, false);
3253
3254         hci_free_dev(hdev);
3255 }
3256
3257 #ifdef CONFIG_PM
3258 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
3259 {
3260         struct btusb_data *data = usb_get_intfdata(intf);
3261
3262         BT_DBG("intf %p", intf);
3263
3264         if (data->suspend_count++)
3265                 return 0;
3266
3267         spin_lock_irq(&data->txlock);
3268         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
3269                 set_bit(BTUSB_SUSPENDING, &data->flags);
3270                 spin_unlock_irq(&data->txlock);
3271         } else {
3272                 spin_unlock_irq(&data->txlock);
3273                 data->suspend_count--;
3274                 return -EBUSY;
3275         }
3276
3277         cancel_work_sync(&data->work);
3278
3279         btusb_stop_traffic(data);
3280         usb_kill_anchored_urbs(&data->tx_anchor);
3281
3282         if (data->oob_wake_irq && device_may_wakeup(&data->udev->dev)) {
3283                 set_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
3284                 enable_irq_wake(data->oob_wake_irq);
3285                 enable_irq(data->oob_wake_irq);
3286         }
3287
3288         return 0;
3289 }
3290
3291 static void play_deferred(struct btusb_data *data)
3292 {
3293         struct urb *urb;
3294         int err;
3295
3296         while ((urb = usb_get_from_anchor(&data->deferred))) {
3297                 usb_anchor_urb(urb, &data->tx_anchor);
3298
3299                 err = usb_submit_urb(urb, GFP_ATOMIC);
3300                 if (err < 0) {
3301                         if (err != -EPERM && err != -ENODEV)
3302                                 BT_ERR("%s urb %p submission failed (%d)",
3303                                        data->hdev->name, urb, -err);
3304                         kfree(urb->setup_packet);
3305                         usb_unanchor_urb(urb);
3306                         usb_free_urb(urb);
3307                         break;
3308                 }
3309
3310                 data->tx_in_flight++;
3311                 usb_free_urb(urb);
3312         }
3313
3314         /* Cleanup the rest deferred urbs. */
3315         while ((urb = usb_get_from_anchor(&data->deferred))) {
3316                 kfree(urb->setup_packet);
3317                 usb_free_urb(urb);
3318         }
3319 }
3320
3321 static int btusb_resume(struct usb_interface *intf)
3322 {
3323         struct btusb_data *data = usb_get_intfdata(intf);
3324         struct hci_dev *hdev = data->hdev;
3325         int err = 0;
3326
3327         BT_DBG("intf %p", intf);
3328
3329         if (--data->suspend_count)
3330                 return 0;
3331
3332         /* Disable only if not already disabled (keep it balanced) */
3333         if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
3334                 disable_irq(data->oob_wake_irq);
3335                 disable_irq_wake(data->oob_wake_irq);
3336         }
3337
3338         if (!test_bit(HCI_RUNNING, &hdev->flags))
3339                 goto done;
3340
3341         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
3342                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
3343                 if (err < 0) {
3344                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
3345                         goto failed;
3346                 }
3347         }
3348
3349         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
3350                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
3351                 if (err < 0) {
3352                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
3353                         goto failed;
3354                 }
3355
3356                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
3357         }
3358
3359         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
3360                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
3361                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
3362                 else
3363                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
3364         }
3365
3366         spin_lock_irq(&data->txlock);
3367         play_deferred(data);
3368         clear_bit(BTUSB_SUSPENDING, &data->flags);
3369         spin_unlock_irq(&data->txlock);
3370         schedule_work(&data->work);
3371
3372         return 0;
3373
3374 failed:
3375         usb_scuttle_anchored_urbs(&data->deferred);
3376 done:
3377         spin_lock_irq(&data->txlock);
3378         clear_bit(BTUSB_SUSPENDING, &data->flags);
3379         spin_unlock_irq(&data->txlock);
3380
3381         return err;
3382 }
3383 #endif
3384
3385 static struct usb_driver btusb_driver = {
3386         .name           = "btusb",
3387         .probe          = btusb_probe,
3388         .disconnect     = btusb_disconnect,
3389 #ifdef CONFIG_PM
3390         .suspend        = btusb_suspend,
3391         .resume         = btusb_resume,
3392 #endif
3393         .id_table       = btusb_table,
3394         .supports_autosuspend = 1,
3395         .disable_hub_initiated_lpm = 1,
3396 };
3397
3398 module_usb_driver(btusb_driver);
3399
3400 module_param(disable_scofix, bool, 0644);
3401 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
3402
3403 module_param(force_scofix, bool, 0644);
3404 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
3405
3406 module_param(enable_autosuspend, bool, 0644);
3407 MODULE_PARM_DESC(enable_autosuspend, "Enable USB autosuspend by default");
3408
3409 module_param(reset, bool, 0644);
3410 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
3411
3412 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
3413 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
3414 MODULE_VERSION(VERSION);
3415 MODULE_LICENSE("GPL");