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