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/module.h>
  25 #include <linux/usb.h>
  26 #include <linux/firmware.h>
  27 #include <linux/of_device.h>
  28 #include <linux/of_irq.h>
  29 #include <linux/suspend.h>
  30 #include <asm/unaligned.h>
  31
  32 #include <net/bluetooth/bluetooth.h>
  33 #include <net/bluetooth/hci_core.h>
  34
  35 #include "btintel.h"
  36 #include "btbcm.h"
  37 #include "btrtl.h"
  38
  39 #define VERSION "0.8"
  40
  41 static bool disable_scofix;
  42 static bool force_scofix;
  43
  44 static bool reset = true;
  45
  46 static struct usb_driver btusb_driver;
  47
  48 #define BTUSB_IGNORE            0x01
  49 #define BTUSB_DIGIANSWER        0x02
  50 #define BTUSB_CSR               0x04
  51 #define BTUSB_SNIFFER           0x08
  52 #define BTUSB_BCM92035          0x10
  53 #define BTUSB_BROKEN_ISOC       0x20
  54 #define BTUSB_WRONG_SCO_MTU     0x40
  55 #define BTUSB_ATH3012           0x80
  56 #define BTUSB_INTEL             0x100
  57 #define BTUSB_INTEL_BOOT        0x200
  58 #define BTUSB_BCM_PATCHRAM      0x400
  59 #define BTUSB_MARVELL           0x800
  60 #define BTUSB_SWAVE             0x1000
  61 #define BTUSB_INTEL_NEW         0x2000
  62 #define BTUSB_AMP               0x4000
  63 #define BTUSB_QCA_ROME          0x8000
  64 #define BTUSB_BCM_APPLE         0x10000
  65 #define BTUSB_REALTEK           0x20000
  66 #define BTUSB_BCM2045           0x40000
  67 #define BTUSB_IFNUM_2           0x80000
  68 #define BTUSB_CW6622            0x100000
  69
  70 static const struct usb_device_id btusb_table[] = {
  71         /* Generic Bluetooth USB device */
  72         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  73
  74         /* Generic Bluetooth AMP device */
  75         { USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP },
  76
  77         /* Generic Bluetooth USB interface */
  78         { USB_INTERFACE_INFO(0xe0, 0x01, 0x01) },
  79
  80         /* Apple-specific (Broadcom) devices */
  81         { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01),
  82           .driver_info = BTUSB_BCM_APPLE | BTUSB_IFNUM_2 },
  83
  84         /* MediaTek MT76x0E */
  85         { USB_DEVICE(0x0e8d, 0x763f) },
  86
  87         /* Broadcom SoftSailing reporting vendor specific */
  88         { USB_DEVICE(0x0a5c, 0x21e1) },
  89
  90         /* Apple MacBookPro 7,1 */
  91         { USB_DEVICE(0x05ac, 0x8213) },
  92
  93         /* Apple iMac11,1 */
  94         { USB_DEVICE(0x05ac, 0x8215) },
  95
  96         /* Apple MacBookPro6,2 */
  97         { USB_DEVICE(0x05ac, 0x8218) },
  98
  99         /* Apple MacBookAir3,1, MacBookAir3,2 */
 100         { USB_DEVICE(0x05ac, 0x821b) },
 101
 102         /* Apple MacBookAir4,1 */
 103         { USB_DEVICE(0x05ac, 0x821f) },
 104
 105         /* Apple MacBookPro8,2 */
 106         { USB_DEVICE(0x05ac, 0x821a) },
 107
 108         /* Apple MacMini5,1 */
 109         { USB_DEVICE(0x05ac, 0x8281) },
 110
 111         /* AVM BlueFRITZ! USB v2.0 */
 112         { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE },
 113
 114         /* Bluetooth Ultraport Module from IBM */
 115         { USB_DEVICE(0x04bf, 0x030a) },
 116
 117         /* ALPS Modules with non-standard id */
 118         { USB_DEVICE(0x044e, 0x3001) },
 119         { USB_DEVICE(0x044e, 0x3002) },
 120
 121         /* Ericsson with non-standard id */
 122         { USB_DEVICE(0x0bdb, 0x1002) },
 123
 124         /* Canyon CN-BTU1 with HID interfaces */
 125         { USB_DEVICE(0x0c10, 0x0000) },
 126
 127         /* Broadcom BCM20702A0 */
 128         { USB_DEVICE(0x413c, 0x8197) },
 129
 130         /* Broadcom BCM20702B0 (Dynex/Insignia) */
 131         { USB_DEVICE(0x19ff, 0x0239), .driver_info = BTUSB_BCM_PATCHRAM },
 132
 133         /* Broadcom BCM43142A0 (Foxconn/Lenovo) */
 134         { USB_VENDOR_AND_INTERFACE_INFO(0x105b, 0xff, 0x01, 0x01),
 135           .driver_info = BTUSB_BCM_PATCHRAM },
 136
 137         /* Broadcom BCM920703 (HTC Vive) */
 138         { USB_VENDOR_AND_INTERFACE_INFO(0x0bb4, 0xff, 0x01, 0x01),
 139           .driver_info = BTUSB_BCM_PATCHRAM },
 140
 141         /* Foxconn - Hon Hai */
 142         { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01),
 143           .driver_info = BTUSB_BCM_PATCHRAM },
 144
 145         /* Lite-On Technology - Broadcom based */
 146         { USB_VENDOR_AND_INTERFACE_INFO(0x04ca, 0xff, 0x01, 0x01),
 147           .driver_info = BTUSB_BCM_PATCHRAM },
 148
 149         /* Broadcom devices with vendor specific id */
 150         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
 151           .driver_info = BTUSB_BCM_PATCHRAM },
 152
 153         /* ASUSTek Computer - Broadcom based */
 154         { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01),
 155           .driver_info = BTUSB_BCM_PATCHRAM },
 156
 157         /* Belkin F8065bf - Broadcom based */
 158         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01),
 159           .driver_info = BTUSB_BCM_PATCHRAM },
 160
 161         /* IMC Networks - Broadcom based */
 162         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01),
 163           .driver_info = BTUSB_BCM_PATCHRAM },
 164
 165         /* Dell Computer - Broadcom based  */
 166         { USB_VENDOR_AND_INTERFACE_INFO(0x413c, 0xff, 0x01, 0x01),
 167           .driver_info = BTUSB_BCM_PATCHRAM },
 168
 169         /* Toshiba Corp - Broadcom based */
 170         { USB_VENDOR_AND_INTERFACE_INFO(0x0930, 0xff, 0x01, 0x01),
 171           .driver_info = BTUSB_BCM_PATCHRAM },
 172
 173         /* Intel Bluetooth USB Bootloader (RAM module) */
 174         { USB_DEVICE(0x8087, 0x0a5a),
 175           .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
 176
 177         { }     /* Terminating entry */
 178 };
 179
 180 MODULE_DEVICE_TABLE(usb, btusb_table);
 181
 182 static const struct usb_device_id blacklist_table[] = {
 183         /* CSR BlueCore devices */
 184         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 185
 186         /* Broadcom BCM2033 without firmware */
 187         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 188
 189         /* Broadcom BCM2045 devices */
 190         { USB_DEVICE(0x0a5c, 0x2045), .driver_info = BTUSB_BCM2045 },
 191
 192         /* Atheros 3011 with sflash firmware */
 193         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 194         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 195         { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE },
 196         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 197         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 198         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 199         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 200
 201         /* Atheros AR9285 Malbec with sflash firmware */
 202         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 203
 204         /* Atheros 3012 with sflash firmware */
 205         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 206         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 207         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 208         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 209         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 210         { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
 211         { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
 212         { USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 },
 213         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 214         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 215         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 216         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 217         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 218         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 219         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 220         { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
 221         { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
 222         { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
 223         { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 },
 224         { USB_DEVICE(0x04ca, 0x3018), .driver_info = BTUSB_ATH3012 },
 225         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 226         { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
 227         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 228         { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
 229         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 230         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 231         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 232         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 233         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 234         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
 235         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 236         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 237         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 238         { USB_DEVICE(0x0cf3, 0x817b), .driver_info = BTUSB_ATH3012 },
 239         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 240         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 241         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 242         { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 },
 243         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 244         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 245         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 246         { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 },
 247         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 248         { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
 249         { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
 250         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
 251         { USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 },
 252         { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
 253         { USB_DEVICE(0x13d3, 0x3487), .driver_info = BTUSB_ATH3012 },
 254         { USB_DEVICE(0x13d3, 0x3490), .driver_info = BTUSB_ATH3012 },
 255
 256         /* Atheros AR5BBU12 with sflash firmware */
 257         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 258
 259         /* Atheros AR5BBU12 with sflash firmware */
 260         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 261         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 262
 263         /* QCA ROME chipset */
 264         { USB_DEVICE(0x0cf3, 0xe007), .driver_info = BTUSB_QCA_ROME },
 265         { USB_DEVICE(0x0cf3, 0xe009), .driver_info = BTUSB_QCA_ROME },
 266         { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME },
 267         { USB_DEVICE(0x0cf3, 0xe301), .driver_info = BTUSB_QCA_ROME },
 268         { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME },
 269         { USB_DEVICE(0x0489, 0xe092), .driver_info = BTUSB_QCA_ROME },
 270         { USB_DEVICE(0x0489, 0xe09f), .driver_info = BTUSB_QCA_ROME },
 271         { USB_DEVICE(0x0489, 0xe0a2), .driver_info = BTUSB_QCA_ROME },
 272         { USB_DEVICE(0x04ca, 0x3011), .driver_info = BTUSB_QCA_ROME },
 273         { USB_DEVICE(0x04ca, 0x3016), .driver_info = BTUSB_QCA_ROME },
 274
 275         /* Broadcom BCM2035 */
 276         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 277         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 278         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 279
 280         /* Broadcom BCM2045 */
 281         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 282         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 283
 284         /* IBM/Lenovo ThinkPad with Broadcom chip */
 285         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 286         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 287
 288         /* HP laptop with Broadcom chip */
 289         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 290
 291         /* Dell laptop with Broadcom chip */
 292         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 293
 294         /* Dell Wireless 370 and 410 devices */
 295         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 296         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 297
 298         /* Belkin F8T012 and F8T013 devices */
 299         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 300         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 301
 302         /* Asus WL-BTD202 device */
 303         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 304
 305         /* Kensington Bluetooth USB adapter */
 306         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 307
 308         /* RTX Telecom based adapters with buggy SCO support */
 309         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 310         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 311
 312         /* CONWISE Technology based adapters with buggy SCO support */
 313         { USB_DEVICE(0x0e5e, 0x6622),
 314           .driver_info = BTUSB_BROKEN_ISOC | BTUSB_CW6622},
 315
 316         /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
 317         { USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE },
 318
 319         /* Digianswer devices */
 320         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 321         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 322
 323         /* CSR BlueCore Bluetooth Sniffer */
 324         { USB_DEVICE(0x0a12, 0x0002),
 325           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 326
 327         /* Frontline ComProbe Bluetooth Sniffer */
 328         { USB_DEVICE(0x16d3, 0x0002),
 329           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 330
 331         /* Marvell Bluetooth devices */
 332         { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
 333         { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
 334         { USB_DEVICE(0x1286, 0x204e), .driver_info = BTUSB_MARVELL },
 335
 336         /* Intel Bluetooth devices */
 337         { USB_DEVICE(0x8087, 0x0025), .driver_info = BTUSB_INTEL_NEW },
 338         { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR },
 339         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 340         { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
 341         { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_NEW },
 342         { USB_DEVICE(0x8087, 0x0aa7), .driver_info = BTUSB_INTEL },
 343         { USB_DEVICE(0x8087, 0x0aaa), .driver_info = BTUSB_INTEL_NEW },
 344
 345         /* Other Intel Bluetooth devices */
 346         { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01),
 347           .driver_info = BTUSB_IGNORE },
 348
 349         /* Realtek Bluetooth devices */
 350         { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01),
 351           .driver_info = BTUSB_REALTEK },
 352
 353         /* Additional Realtek 8723AE Bluetooth devices */
 354         { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK },
 355         { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK },
 356
 357         /* Additional Realtek 8723BE Bluetooth devices */
 358         { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK },
 359         { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK },
 360         { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
 361         { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
 362         { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },
 363         { USB_DEVICE(0x13d3, 0x3494), .driver_info = BTUSB_REALTEK },
 364
 365         /* Additional Realtek 8821AE Bluetooth devices */
 366         { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
 367         { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },
 368         { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK },
 369         { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK },
 370         { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK },
 371
 372         /* Silicon Wave based devices */
 373         { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE },
 374
 375         { }     /* Terminating entry */
 376 };
 377
 378 #define BTUSB_MAX_ISOC_FRAMES   10
 379
 380 #define BTUSB_INTR_RUNNING      0
 381 #define BTUSB_BULK_RUNNING      1
 382 #define BTUSB_ISOC_RUNNING      2
 383 #define BTUSB_SUSPENDING        3
 384 #define BTUSB_DID_ISO_RESUME    4
 385 #define BTUSB_BOOTLOADER        5
 386 #define BTUSB_DOWNLOADING       6
 387 #define BTUSB_FIRMWARE_LOADED   7
 388 #define BTUSB_FIRMWARE_FAILED   8
 389 #define BTUSB_BOOTING           9
 390 #define BTUSB_RESET_RESUME      10
 391 #define BTUSB_DIAG_RUNNING      11
 392 #define BTUSB_OOB_WAKE_ENABLED  12
 393
 394 struct btusb_data {
 395         struct hci_dev       *hdev;
 396         struct usb_device    *udev;
 397         struct usb_interface *intf;
 398         struct usb_interface *isoc;
 399         struct usb_interface *diag;
 400
 401         unsigned long flags;
 402
 403         struct work_struct work;
 404         struct work_struct waker;
 405
 406         struct usb_anchor deferred;
 407         struct usb_anchor tx_anchor;
 408         int tx_in_flight;
 409         spinlock_t txlock;
 410
 411         struct usb_anchor intr_anchor;
 412         struct usb_anchor bulk_anchor;
 413         struct usb_anchor isoc_anchor;
 414         struct usb_anchor diag_anchor;
 415         spinlock_t rxlock;
 416
 417         struct sk_buff *evt_skb;
 418         struct sk_buff *acl_skb;
 419         struct sk_buff *sco_skb;
 420
 421         struct usb_endpoint_descriptor *intr_ep;
 422         struct usb_endpoint_descriptor *bulk_tx_ep;
 423         struct usb_endpoint_descriptor *bulk_rx_ep;
 424         struct usb_endpoint_descriptor *isoc_tx_ep;
 425         struct usb_endpoint_descriptor *isoc_rx_ep;
 426         struct usb_endpoint_descriptor *diag_tx_ep;
 427         struct usb_endpoint_descriptor *diag_rx_ep;
 428
 429         __u8 cmdreq_type;
 430         __u8 cmdreq;
 431
 432         unsigned int sco_num;
 433         int isoc_altsetting;
 434         int suspend_count;
 435
 436         int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
 437         int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
 438
 439         int (*setup_on_usb)(struct hci_dev *hdev);
 440
 441         int oob_wake_irq;   /* irq for out-of-band wake-on-bt */
 442 };
 443
 444 static inline void btusb_free_frags(struct btusb_data *data)
 445 {
 446         unsigned long flags;
 447
 448         spin_lock_irqsave(&data->rxlock, flags);
 449
 450         kfree_skb(data->evt_skb);
 451         data->evt_skb = NULL;
 452
 453         kfree_skb(data->acl_skb);
 454         data->acl_skb = NULL;
 455
 456         kfree_skb(data->sco_skb);
 457         data->sco_skb = NULL;
 458
 459         spin_unlock_irqrestore(&data->rxlock, flags);
 460 }
 461
 462 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
 463 {
 464         struct sk_buff *skb;
 465         int err = 0;
 466
 467         spin_lock(&data->rxlock);
 468         skb = data->evt_skb;
 469
 470         while (count) {
 471                 int len;
 472
 473                 if (!skb) {
 474                         skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
 475                         if (!skb) {
 476                                 err = -ENOMEM;
 477                                 break;
 478                         }
 479
 480                         hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
 481                         hci_skb_expect(skb) = HCI_EVENT_HDR_SIZE;
 482                 }
 483
 484                 len = min_t(uint, hci_skb_expect(skb), count);
 485                 skb_put_data(skb, buffer, len);
 486
 487                 count -= len;
 488                 buffer += len;
 489                 hci_skb_expect(skb) -= len;
 490
 491                 if (skb->len == HCI_EVENT_HDR_SIZE) {
 492                         /* Complete event header */
 493                         hci_skb_expect(skb) = hci_event_hdr(skb)->plen;
 494
 495                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 496                                 kfree_skb(skb);
 497                                 skb = NULL;
 498
 499                                 err = -EILSEQ;
 500                                 break;
 501                         }
 502                 }
 503
 504                 if (!hci_skb_expect(skb)) {
 505                         /* Complete frame */
 506                         data->recv_event(data->hdev, skb);
 507                         skb = NULL;
 508                 }
 509         }
 510
 511         data->evt_skb = skb;
 512         spin_unlock(&data->rxlock);
 513
 514         return err;
 515 }
 516
 517 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
 518 {
 519         struct sk_buff *skb;
 520         int err = 0;
 521
 522         spin_lock(&data->rxlock);
 523         skb = data->acl_skb;
 524
 525         while (count) {
 526                 int len;
 527
 528                 if (!skb) {
 529                         skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
 530                         if (!skb) {
 531                                 err = -ENOMEM;
 532                                 break;
 533                         }
 534
 535                         hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT;
 536                         hci_skb_expect(skb) = HCI_ACL_HDR_SIZE;
 537                 }
 538
 539                 len = min_t(uint, hci_skb_expect(skb), count);
 540                 skb_put_data(skb, buffer, len);
 541
 542                 count -= len;
 543                 buffer += len;
 544                 hci_skb_expect(skb) -= len;
 545
 546                 if (skb->len == HCI_ACL_HDR_SIZE) {
 547                         __le16 dlen = hci_acl_hdr(skb)->dlen;
 548
 549                         /* Complete ACL header */
 550                         hci_skb_expect(skb) = __le16_to_cpu(dlen);
 551
 552                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 553                                 kfree_skb(skb);
 554                                 skb = NULL;
 555
 556                                 err = -EILSEQ;
 557                                 break;
 558                         }
 559                 }
 560
 561                 if (!hci_skb_expect(skb)) {
 562                         /* Complete frame */
 563                         hci_recv_frame(data->hdev, skb);
 564                         skb = NULL;
 565                 }
 566         }
 567
 568         data->acl_skb = skb;
 569         spin_unlock(&data->rxlock);
 570
 571         return err;
 572 }
 573
 574 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
 575 {
 576         struct sk_buff *skb;
 577         int err = 0;
 578
 579         spin_lock(&data->rxlock);
 580         skb = data->sco_skb;
 581
 582         while (count) {
 583                 int len;
 584
 585                 if (!skb) {
 586                         skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
 587                         if (!skb) {
 588                                 err = -ENOMEM;
 589                                 break;
 590                         }
 591
 592                         hci_skb_pkt_type(skb) = HCI_SCODATA_PKT;
 593                         hci_skb_expect(skb) = HCI_SCO_HDR_SIZE;
 594                 }
 595
 596                 len = min_t(uint, hci_skb_expect(skb), count);
 597                 skb_put_data(skb, buffer, len);
 598
 599                 count -= len;
 600                 buffer += len;
 601                 hci_skb_expect(skb) -= len;
 602
 603                 if (skb->len == HCI_SCO_HDR_SIZE) {
 604                         /* Complete SCO header */
 605                         hci_skb_expect(skb) = hci_sco_hdr(skb)->dlen;
 606
 607                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 608                                 kfree_skb(skb);
 609                                 skb = NULL;
 610
 611                                 err = -EILSEQ;
 612                                 break;
 613                         }
 614                 }
 615
 616                 if (!hci_skb_expect(skb)) {
 617                         /* Complete frame */
 618                         hci_recv_frame(data->hdev, skb);
 619                         skb = NULL;
 620                 }
 621         }
 622
 623         data->sco_skb = skb;
 624         spin_unlock(&data->rxlock);
 625
 626         return err;
 627 }
 628
 629 static void btusb_intr_complete(struct urb *urb)
 630 {
 631         struct hci_dev *hdev = urb->context;
 632         struct btusb_data *data = hci_get_drvdata(hdev);
 633         int err;
 634
 635         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 636                urb->actual_length);
 637
 638         if (!test_bit(HCI_RUNNING, &hdev->flags))
 639                 return;
 640
 641         if (urb->status == 0) {
 642                 hdev->stat.byte_rx += urb->actual_length;
 643
 644                 if (btusb_recv_intr(data, urb->transfer_buffer,
 645                                     urb->actual_length) < 0) {
 646                         bt_dev_err(hdev, "corrupted event packet");
 647                         hdev->stat.err_rx++;
 648                 }
 649         } else if (urb->status == -ENOENT) {
 650                 /* Avoid suspend failed when usb_kill_urb */
 651                 return;
 652         }
 653
 654         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 655                 return;
 656
 657         usb_mark_last_busy(data->udev);
 658         usb_anchor_urb(urb, &data->intr_anchor);
 659
 660         err = usb_submit_urb(urb, GFP_ATOMIC);
 661         if (err < 0) {
 662                 /* -EPERM: urb is being killed;
 663                  * -ENODEV: device got disconnected
 664                  */
 665                 if (err != -EPERM && err != -ENODEV)
 666                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
 667                                    urb, -err);
 668                 usb_unanchor_urb(urb);
 669         }
 670 }
 671
 672 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 673 {
 674         struct btusb_data *data = hci_get_drvdata(hdev);
 675         struct urb *urb;
 676         unsigned char *buf;
 677         unsigned int pipe;
 678         int err, size;
 679
 680         BT_DBG("%s", hdev->name);
 681
 682         if (!data->intr_ep)
 683                 return -ENODEV;
 684
 685         urb = usb_alloc_urb(0, mem_flags);
 686         if (!urb)
 687                 return -ENOMEM;
 688
 689         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 690
 691         buf = kmalloc(size, mem_flags);
 692         if (!buf) {
 693                 usb_free_urb(urb);
 694                 return -ENOMEM;
 695         }
 696
 697         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 698
 699         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 700                          btusb_intr_complete, hdev, data->intr_ep->bInterval);
 701
 702         urb->transfer_flags |= URB_FREE_BUFFER;
 703
 704         usb_anchor_urb(urb, &data->intr_anchor);
 705
 706         err = usb_submit_urb(urb, mem_flags);
 707         if (err < 0) {
 708                 if (err != -EPERM && err != -ENODEV)
 709                         bt_dev_err(hdev, "urb %p submission failed (%d)",
 710                                    urb, -err);
 711                 usb_unanchor_urb(urb);
 712         }
 713
 714         usb_free_urb(urb);
 715
 716         return err;
 717 }
 718
 719 static void btusb_bulk_complete(struct urb *urb)
 720 {
 721         struct hci_dev *hdev = urb->context;
 722         struct btusb_data *data = hci_get_drvdata(hdev);
 723         int err;
 724
 725         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 726                urb->actual_length);
 727
 728         if (!test_bit(HCI_RUNNING, &hdev->flags))
 729                 return;
 730
 731         if (urb->status == 0) {
 732                 hdev->stat.byte_rx += urb->actual_length;
 733
 734                 if (data->recv_bulk(data, urb->transfer_buffer,
 735                                     urb->actual_length) < 0) {
 736                         bt_dev_err(hdev, "corrupted ACL packet");
 737                         hdev->stat.err_rx++;
 738                 }
 739         } else if (urb->status == -ENOENT) {
 740                 /* Avoid suspend failed when usb_kill_urb */
 741                 return;
 742         }
 743
 744         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 745                 return;
 746
 747         usb_anchor_urb(urb, &data->bulk_anchor);
 748         usb_mark_last_busy(data->udev);
 749
 750         err = usb_submit_urb(urb, GFP_ATOMIC);
 751         if (err < 0) {
 752                 /* -EPERM: urb is being killed;
 753                  * -ENODEV: device got disconnected
 754                  */
 755                 if (err != -EPERM && err != -ENODEV)
 756                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
 757                                    urb, -err);
 758                 usb_unanchor_urb(urb);
 759         }
 760 }
 761
 762 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 763 {
 764         struct btusb_data *data = hci_get_drvdata(hdev);
 765         struct urb *urb;
 766         unsigned char *buf;
 767         unsigned int pipe;
 768         int err, size = HCI_MAX_FRAME_SIZE;
 769
 770         BT_DBG("%s", hdev->name);
 771
 772         if (!data->bulk_rx_ep)
 773                 return -ENODEV;
 774
 775         urb = usb_alloc_urb(0, mem_flags);
 776         if (!urb)
 777                 return -ENOMEM;
 778
 779         buf = kmalloc(size, mem_flags);
 780         if (!buf) {
 781                 usb_free_urb(urb);
 782                 return -ENOMEM;
 783         }
 784
 785         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 786
 787         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
 788                           btusb_bulk_complete, hdev);
 789
 790         urb->transfer_flags |= URB_FREE_BUFFER;
 791
 792         usb_mark_last_busy(data->udev);
 793         usb_anchor_urb(urb, &data->bulk_anchor);
 794
 795         err = usb_submit_urb(urb, mem_flags);
 796         if (err < 0) {
 797                 if (err != -EPERM && err != -ENODEV)
 798                         bt_dev_err(hdev, "urb %p submission failed (%d)",
 799                                    urb, -err);
 800                 usb_unanchor_urb(urb);
 801         }
 802
 803         usb_free_urb(urb);
 804
 805         return err;
 806 }
 807
 808 static void btusb_isoc_complete(struct urb *urb)
 809 {
 810         struct hci_dev *hdev = urb->context;
 811         struct btusb_data *data = hci_get_drvdata(hdev);
 812         int i, err;
 813
 814         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 815                urb->actual_length);
 816
 817         if (!test_bit(HCI_RUNNING, &hdev->flags))
 818                 return;
 819
 820         if (urb->status == 0) {
 821                 for (i = 0; i < urb->number_of_packets; i++) {
 822                         unsigned int offset = urb->iso_frame_desc[i].offset;
 823                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 824
 825                         if (urb->iso_frame_desc[i].status)
 826                                 continue;
 827
 828                         hdev->stat.byte_rx += length;
 829
 830                         if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
 831                                             length) < 0) {
 832                                 bt_dev_err(hdev, "corrupted SCO packet");
 833                                 hdev->stat.err_rx++;
 834                         }
 835                 }
 836         } else if (urb->status == -ENOENT) {
 837                 /* Avoid suspend failed when usb_kill_urb */
 838                 return;
 839         }
 840
 841         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 842                 return;
 843
 844         usb_anchor_urb(urb, &data->isoc_anchor);
 845
 846         err = usb_submit_urb(urb, GFP_ATOMIC);
 847         if (err < 0) {
 848                 /* -EPERM: urb is being killed;
 849                  * -ENODEV: device got disconnected
 850                  */
 851                 if (err != -EPERM && err != -ENODEV)
 852                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
 853                                    urb, -err);
 854                 usb_unanchor_urb(urb);
 855         }
 856 }
 857
 858 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 859 {
 860         int i, offset = 0;
 861
 862         BT_DBG("len %d mtu %d", len, mtu);
 863
 864         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 865                                         i++, offset += mtu, len -= mtu) {
 866                 urb->iso_frame_desc[i].offset = offset;
 867                 urb->iso_frame_desc[i].length = mtu;
 868         }
 869
 870         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 871                 urb->iso_frame_desc[i].offset = offset;
 872                 urb->iso_frame_desc[i].length = len;
 873                 i++;
 874         }
 875
 876         urb->number_of_packets = i;
 877 }
 878
 879 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 880 {
 881         struct btusb_data *data = hci_get_drvdata(hdev);
 882         struct urb *urb;
 883         unsigned char *buf;
 884         unsigned int pipe;
 885         int err, size;
 886
 887         BT_DBG("%s", hdev->name);
 888
 889         if (!data->isoc_rx_ep)
 890                 return -ENODEV;
 891
 892         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 893         if (!urb)
 894                 return -ENOMEM;
 895
 896         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 897                                                 BTUSB_MAX_ISOC_FRAMES;
 898
 899         buf = kmalloc(size, mem_flags);
 900         if (!buf) {
 901                 usb_free_urb(urb);
 902                 return -ENOMEM;
 903         }
 904
 905         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 906
 907         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 908                          hdev, data->isoc_rx_ep->bInterval);
 909
 910         urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
 911
 912         __fill_isoc_descriptor(urb, size,
 913                                le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 914
 915         usb_anchor_urb(urb, &data->isoc_anchor);
 916
 917         err = usb_submit_urb(urb, mem_flags);
 918         if (err < 0) {
 919                 if (err != -EPERM && err != -ENODEV)
 920                         bt_dev_err(hdev, "urb %p submission failed (%d)",
 921                                    urb, -err);
 922                 usb_unanchor_urb(urb);
 923         }
 924
 925         usb_free_urb(urb);
 926
 927         return err;
 928 }
 929
 930 static void btusb_diag_complete(struct urb *urb)
 931 {
 932         struct hci_dev *hdev = urb->context;
 933         struct btusb_data *data = hci_get_drvdata(hdev);
 934         int err;
 935
 936         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 937                urb->actual_length);
 938
 939         if (urb->status == 0) {
 940                 struct sk_buff *skb;
 941
 942                 skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC);
 943                 if (skb) {
 944                         skb_put_data(skb, urb->transfer_buffer,
 945                                      urb->actual_length);
 946                         hci_recv_diag(hdev, skb);
 947                 }
 948         } else if (urb->status == -ENOENT) {
 949                 /* Avoid suspend failed when usb_kill_urb */
 950                 return;
 951         }
 952
 953         if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags))
 954                 return;
 955
 956         usb_anchor_urb(urb, &data->diag_anchor);
 957         usb_mark_last_busy(data->udev);
 958
 959         err = usb_submit_urb(urb, GFP_ATOMIC);
 960         if (err < 0) {
 961                 /* -EPERM: urb is being killed;
 962                  * -ENODEV: device got disconnected
 963                  */
 964                 if (err != -EPERM && err != -ENODEV)
 965                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
 966                                    urb, -err);
 967                 usb_unanchor_urb(urb);
 968         }
 969 }
 970
 971 static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags)
 972 {
 973         struct btusb_data *data = hci_get_drvdata(hdev);
 974         struct urb *urb;
 975         unsigned char *buf;
 976         unsigned int pipe;
 977         int err, size = HCI_MAX_FRAME_SIZE;
 978
 979         BT_DBG("%s", hdev->name);
 980
 981         if (!data->diag_rx_ep)
 982                 return -ENODEV;
 983
 984         urb = usb_alloc_urb(0, mem_flags);
 985         if (!urb)
 986                 return -ENOMEM;
 987
 988         buf = kmalloc(size, mem_flags);
 989         if (!buf) {
 990                 usb_free_urb(urb);
 991                 return -ENOMEM;
 992         }
 993
 994         pipe = usb_rcvbulkpipe(data->udev, data->diag_rx_ep->bEndpointAddress);
 995
 996         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
 997                           btusb_diag_complete, hdev);
 998
 999         urb->transfer_flags |= URB_FREE_BUFFER;
1000
1001         usb_mark_last_busy(data->udev);
1002         usb_anchor_urb(urb, &data->diag_anchor);
1003
1004         err = usb_submit_urb(urb, mem_flags);
1005         if (err < 0) {
1006                 if (err != -EPERM && err != -ENODEV)
1007                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1008                                    urb, -err);
1009                 usb_unanchor_urb(urb);
1010         }
1011
1012         usb_free_urb(urb);
1013
1014         return err;
1015 }
1016
1017 static void btusb_tx_complete(struct urb *urb)
1018 {
1019         struct sk_buff *skb = urb->context;
1020         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1021         struct btusb_data *data = hci_get_drvdata(hdev);
1022
1023         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1024                urb->actual_length);
1025
1026         if (!test_bit(HCI_RUNNING, &hdev->flags))
1027                 goto done;
1028
1029         if (!urb->status)
1030                 hdev->stat.byte_tx += urb->transfer_buffer_length;
1031         else
1032                 hdev->stat.err_tx++;
1033
1034 done:
1035         spin_lock(&data->txlock);
1036         data->tx_in_flight--;
1037         spin_unlock(&data->txlock);
1038
1039         kfree(urb->setup_packet);
1040
1041         kfree_skb(skb);
1042 }
1043
1044 static void btusb_isoc_tx_complete(struct urb *urb)
1045 {
1046         struct sk_buff *skb = urb->context;
1047         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1048
1049         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1050                urb->actual_length);
1051
1052         if (!test_bit(HCI_RUNNING, &hdev->flags))
1053                 goto done;
1054
1055         if (!urb->status)
1056                 hdev->stat.byte_tx += urb->transfer_buffer_length;
1057         else
1058                 hdev->stat.err_tx++;
1059
1060 done:
1061         kfree(urb->setup_packet);
1062
1063         kfree_skb(skb);
1064 }
1065
1066 static int btusb_open(struct hci_dev *hdev)
1067 {
1068         struct btusb_data *data = hci_get_drvdata(hdev);
1069         int err;
1070
1071         BT_DBG("%s", hdev->name);
1072
1073         err = usb_autopm_get_interface(data->intf);
1074         if (err < 0)
1075                 return err;
1076
1077         /* Patching USB firmware files prior to starting any URBs of HCI path
1078          * It is more safe to use USB bulk channel for downloading USB patch
1079          */
1080         if (data->setup_on_usb) {
1081                 err = data->setup_on_usb(hdev);
1082                 if (err < 0)
1083                         return err;
1084         }
1085
1086         data->intf->needs_remote_wakeup = 1;
1087         /* device specific wakeup source enabled and required for USB
1088          * remote wakeup while host is suspended
1089          */
1090         device_wakeup_enable(&data->udev->dev);
1091
1092         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
1093                 goto done;
1094
1095         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
1096         if (err < 0)
1097                 goto failed;
1098
1099         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1100         if (err < 0) {
1101                 usb_kill_anchored_urbs(&data->intr_anchor);
1102                 goto failed;
1103         }
1104
1105         set_bit(BTUSB_BULK_RUNNING, &data->flags);
1106         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1107
1108         if (data->diag) {
1109                 if (!btusb_submit_diag_urb(hdev, GFP_KERNEL))
1110                         set_bit(BTUSB_DIAG_RUNNING, &data->flags);
1111         }
1112
1113 done:
1114         usb_autopm_put_interface(data->intf);
1115         return 0;
1116
1117 failed:
1118         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1119         usb_autopm_put_interface(data->intf);
1120         return err;
1121 }
1122
1123 static void btusb_stop_traffic(struct btusb_data *data)
1124 {
1125         usb_kill_anchored_urbs(&data->intr_anchor);
1126         usb_kill_anchored_urbs(&data->bulk_anchor);
1127         usb_kill_anchored_urbs(&data->isoc_anchor);
1128         usb_kill_anchored_urbs(&data->diag_anchor);
1129 }
1130
1131 static int btusb_close(struct hci_dev *hdev)
1132 {
1133         struct btusb_data *data = hci_get_drvdata(hdev);
1134         int err;
1135
1136         BT_DBG("%s", hdev->name);
1137
1138         cancel_work_sync(&data->work);
1139         cancel_work_sync(&data->waker);
1140
1141         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1142         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1143         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1144         clear_bit(BTUSB_DIAG_RUNNING, &data->flags);
1145
1146         btusb_stop_traffic(data);
1147         btusb_free_frags(data);
1148
1149         err = usb_autopm_get_interface(data->intf);
1150         if (err < 0)
1151                 goto failed;
1152
1153         data->intf->needs_remote_wakeup = 0;
1154         device_wakeup_disable(&data->udev->dev);
1155         usb_autopm_put_interface(data->intf);
1156
1157 failed:
1158         usb_scuttle_anchored_urbs(&data->deferred);
1159         return 0;
1160 }
1161
1162 static int btusb_flush(struct hci_dev *hdev)
1163 {
1164         struct btusb_data *data = hci_get_drvdata(hdev);
1165
1166         BT_DBG("%s", hdev->name);
1167
1168         usb_kill_anchored_urbs(&data->tx_anchor);
1169         btusb_free_frags(data);
1170
1171         return 0;
1172 }
1173
1174 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
1175 {
1176         struct btusb_data *data = hci_get_drvdata(hdev);
1177         struct usb_ctrlrequest *dr;
1178         struct urb *urb;
1179         unsigned int pipe;
1180
1181         urb = usb_alloc_urb(0, GFP_KERNEL);
1182         if (!urb)
1183                 return ERR_PTR(-ENOMEM);
1184
1185         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
1186         if (!dr) {
1187                 usb_free_urb(urb);
1188                 return ERR_PTR(-ENOMEM);
1189         }
1190
1191         dr->bRequestType = data->cmdreq_type;
1192         dr->bRequest     = data->cmdreq;
1193         dr->wIndex       = 0;
1194         dr->wValue       = 0;
1195         dr->wLength      = __cpu_to_le16(skb->len);
1196
1197         pipe = usb_sndctrlpipe(data->udev, 0x00);
1198
1199         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
1200                              skb->data, skb->len, btusb_tx_complete, skb);
1201
1202         skb->dev = (void *)hdev;
1203
1204         return urb;
1205 }
1206
1207 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
1208 {
1209         struct btusb_data *data = hci_get_drvdata(hdev);
1210         struct urb *urb;
1211         unsigned int pipe;
1212
1213         if (!data->bulk_tx_ep)
1214                 return ERR_PTR(-ENODEV);
1215
1216         urb = usb_alloc_urb(0, GFP_KERNEL);
1217         if (!urb)
1218                 return ERR_PTR(-ENOMEM);
1219
1220         pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1221
1222         usb_fill_bulk_urb(urb, data->udev, pipe,
1223                           skb->data, skb->len, btusb_tx_complete, skb);
1224
1225         skb->dev = (void *)hdev;
1226
1227         return urb;
1228 }
1229
1230 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1231 {
1232         struct btusb_data *data = hci_get_drvdata(hdev);
1233         struct urb *urb;
1234         unsigned int pipe;
1235
1236         if (!data->isoc_tx_ep)
1237                 return ERR_PTR(-ENODEV);
1238
1239         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1240         if (!urb)
1241                 return ERR_PTR(-ENOMEM);
1242
1243         pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1244
1245         usb_fill_int_urb(urb, data->udev, pipe,
1246                          skb->data, skb->len, btusb_isoc_tx_complete,
1247                          skb, data->isoc_tx_ep->bInterval);
1248
1249         urb->transfer_flags  = URB_ISO_ASAP;
1250
1251         __fill_isoc_descriptor(urb, skb->len,
1252                                le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1253
1254         skb->dev = (void *)hdev;
1255
1256         return urb;
1257 }
1258
1259 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1260 {
1261         struct btusb_data *data = hci_get_drvdata(hdev);
1262         int err;
1263
1264         usb_anchor_urb(urb, &data->tx_anchor);
1265
1266         err = usb_submit_urb(urb, GFP_KERNEL);
1267         if (err < 0) {
1268                 if (err != -EPERM && err != -ENODEV)
1269                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1270                                    urb, -err);
1271                 kfree(urb->setup_packet);
1272                 usb_unanchor_urb(urb);
1273         } else {
1274                 usb_mark_last_busy(data->udev);
1275         }
1276
1277         usb_free_urb(urb);
1278         return err;
1279 }
1280
1281 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1282 {
1283         struct btusb_data *data = hci_get_drvdata(hdev);
1284         unsigned long flags;
1285         bool suspending;
1286
1287         spin_lock_irqsave(&data->txlock, flags);
1288         suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1289         if (!suspending)
1290                 data->tx_in_flight++;
1291         spin_unlock_irqrestore(&data->txlock, flags);
1292
1293         if (!suspending)
1294                 return submit_tx_urb(hdev, urb);
1295
1296         usb_anchor_urb(urb, &data->deferred);
1297         schedule_work(&data->waker);
1298
1299         usb_free_urb(urb);
1300         return 0;
1301 }
1302
1303 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1304 {
1305         struct urb *urb;
1306
1307         BT_DBG("%s", hdev->name);
1308
1309         switch (hci_skb_pkt_type(skb)) {
1310         case HCI_COMMAND_PKT:
1311                 urb = alloc_ctrl_urb(hdev, skb);
1312                 if (IS_ERR(urb))
1313                         return PTR_ERR(urb);
1314
1315                 hdev->stat.cmd_tx++;
1316                 return submit_or_queue_tx_urb(hdev, urb);
1317
1318         case HCI_ACLDATA_PKT:
1319                 urb = alloc_bulk_urb(hdev, skb);
1320                 if (IS_ERR(urb))
1321                         return PTR_ERR(urb);
1322
1323                 hdev->stat.acl_tx++;
1324                 return submit_or_queue_tx_urb(hdev, urb);
1325
1326         case HCI_SCODATA_PKT:
1327                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1328                         return -ENODEV;
1329
1330                 urb = alloc_isoc_urb(hdev, skb);
1331                 if (IS_ERR(urb))
1332                         return PTR_ERR(urb);
1333
1334                 hdev->stat.sco_tx++;
1335                 return submit_tx_urb(hdev, urb);
1336         }
1337
1338         return -EILSEQ;
1339 }
1340
1341 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1342 {
1343         struct btusb_data *data = hci_get_drvdata(hdev);
1344
1345         BT_DBG("%s evt %d", hdev->name, evt);
1346
1347         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1348                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1349                 schedule_work(&data->work);
1350         }
1351 }
1352
1353 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1354 {
1355         struct btusb_data *data = hci_get_drvdata(hdev);
1356         struct usb_interface *intf = data->isoc;
1357         struct usb_endpoint_descriptor *ep_desc;
1358         int i, err;
1359
1360         if (!data->isoc)
1361                 return -ENODEV;
1362
1363         err = usb_set_interface(data->udev, 1, altsetting);
1364         if (err < 0) {
1365                 bt_dev_err(hdev, "setting interface failed (%d)", -err);
1366                 return err;
1367         }
1368
1369         data->isoc_altsetting = altsetting;
1370
1371         data->isoc_tx_ep = NULL;
1372         data->isoc_rx_ep = NULL;
1373
1374         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1375                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1376
1377                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1378                         data->isoc_tx_ep = ep_desc;
1379                         continue;
1380                 }
1381
1382                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1383                         data->isoc_rx_ep = ep_desc;
1384                         continue;
1385                 }
1386         }
1387
1388         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1389                 bt_dev_err(hdev, "invalid SCO descriptors");
1390                 return -ENODEV;
1391         }
1392
1393         return 0;
1394 }
1395
1396 static void btusb_work(struct work_struct *work)
1397 {
1398         struct btusb_data *data = container_of(work, struct btusb_data, work);
1399         struct hci_dev *hdev = data->hdev;
1400         int new_alts;
1401         int err;
1402
1403         if (data->sco_num > 0) {
1404                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1405                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1406                         if (err < 0) {
1407                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1408                                 usb_kill_anchored_urbs(&data->isoc_anchor);
1409                                 return;
1410                         }
1411
1412                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1413                 }
1414
1415                 if (hdev->voice_setting & 0x0020) {
1416                         static const int alts[3] = { 2, 4, 5 };
1417
1418                         new_alts = alts[data->sco_num - 1];
1419                 } else {
1420                         new_alts = data->sco_num;
1421                 }
1422
1423                 if (data->isoc_altsetting != new_alts) {
1424                         unsigned long flags;
1425
1426                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1427                         usb_kill_anchored_urbs(&data->isoc_anchor);
1428
1429                         /* When isochronous alternate setting needs to be
1430                          * changed, because SCO connection has been added
1431                          * or removed, a packet fragment may be left in the
1432                          * reassembling state. This could lead to wrongly
1433                          * assembled fragments.
1434                          *
1435                          * Clear outstanding fragment when selecting a new
1436                          * alternate setting.
1437                          */
1438                         spin_lock_irqsave(&data->rxlock, flags);
1439                         kfree_skb(data->sco_skb);
1440                         data->sco_skb = NULL;
1441                         spin_unlock_irqrestore(&data->rxlock, flags);
1442
1443                         if (__set_isoc_interface(hdev, new_alts) < 0)
1444                                 return;
1445                 }
1446
1447                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1448                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1449                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1450                         else
1451                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1452                 }
1453         } else {
1454                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1455                 usb_kill_anchored_urbs(&data->isoc_anchor);
1456
1457                 __set_isoc_interface(hdev, 0);
1458                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1459                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1460         }
1461 }
1462
1463 static void btusb_waker(struct work_struct *work)
1464 {
1465         struct btusb_data *data = container_of(work, struct btusb_data, waker);
1466         int err;
1467
1468         err = usb_autopm_get_interface(data->intf);
1469         if (err < 0)
1470                 return;
1471
1472         usb_autopm_put_interface(data->intf);
1473 }
1474
1475 static int btusb_setup_bcm92035(struct hci_dev *hdev)
1476 {
1477         struct sk_buff *skb;
1478         u8 val = 0x00;
1479
1480         BT_DBG("%s", hdev->name);
1481
1482         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1483         if (IS_ERR(skb))
1484                 bt_dev_err(hdev, "BCM92035 command failed (%ld)", PTR_ERR(skb));
1485         else
1486                 kfree_skb(skb);
1487
1488         return 0;
1489 }
1490
1491 static int btusb_setup_csr(struct hci_dev *hdev)
1492 {
1493         struct hci_rp_read_local_version *rp;
1494         struct sk_buff *skb;
1495
1496         BT_DBG("%s", hdev->name);
1497
1498         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1499                              HCI_INIT_TIMEOUT);
1500         if (IS_ERR(skb)) {
1501                 int err = PTR_ERR(skb);
1502                 bt_dev_err(hdev, "CSR: Local version failed (%d)", err);
1503                 return err;
1504         }
1505
1506         if (skb->len != sizeof(struct hci_rp_read_local_version)) {
1507                 bt_dev_err(hdev, "CSR: Local version length mismatch");
1508                 kfree_skb(skb);
1509                 return -EIO;
1510         }
1511
1512         rp = (struct hci_rp_read_local_version *)skb->data;
1513
1514         /* Detect controllers which aren't real CSR ones. */
1515         if (le16_to_cpu(rp->manufacturer) != 10 ||
1516             le16_to_cpu(rp->lmp_subver) == 0x0c5c) {
1517                 /* Clear the reset quirk since this is not an actual
1518                  * early Bluetooth 1.1 device from CSR.
1519                  */
1520                 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1521
1522                 /* These fake CSR controllers have all a broken
1523                  * stored link key handling and so just disable it.
1524                  */
1525                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
1526         }
1527
1528         kfree_skb(skb);
1529
1530         return 0;
1531 }
1532
1533 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1534                                                        struct intel_version *ver)
1535 {
1536         const struct firmware *fw;
1537         char fwname[64];
1538         int ret;
1539
1540         snprintf(fwname, sizeof(fwname),
1541                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1542                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
1543                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1544                  ver->fw_build_ww, ver->fw_build_yy);
1545
1546         ret = request_firmware(&fw, fwname, &hdev->dev);
1547         if (ret < 0) {
1548                 if (ret == -EINVAL) {
1549                         BT_ERR("%s Intel firmware file request failed (%d)",
1550                                hdev->name, ret);
1551                         return NULL;
1552                 }
1553
1554                 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1555                        hdev->name, fwname, ret);
1556
1557                 /* If the correct firmware patch file is not found, use the
1558                  * default firmware patch file instead
1559                  */
1560                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1561                          ver->hw_platform, ver->hw_variant);
1562                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1563                         BT_ERR("%s failed to open default Intel fw file: %s",
1564                                hdev->name, fwname);
1565                         return NULL;
1566                 }
1567         }
1568
1569         bt_dev_info(hdev, "Intel Bluetooth firmware file: %s", fwname);
1570
1571         return fw;
1572 }
1573
1574 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1575                                       const struct firmware *fw,
1576                                       const u8 **fw_ptr, int *disable_patch)
1577 {
1578         struct sk_buff *skb;
1579         struct hci_command_hdr *cmd;
1580         const u8 *cmd_param;
1581         struct hci_event_hdr *evt = NULL;
1582         const u8 *evt_param = NULL;
1583         int remain = fw->size - (*fw_ptr - fw->data);
1584
1585         /* The first byte indicates the types of the patch command or event.
1586          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1587          * in the current firmware buffer doesn't start with 0x01 or
1588          * the size of remain buffer is smaller than HCI command header,
1589          * the firmware file is corrupted and it should stop the patching
1590          * process.
1591          */
1592         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1593                 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1594                 return -EINVAL;
1595         }
1596         (*fw_ptr)++;
1597         remain--;
1598
1599         cmd = (struct hci_command_hdr *)(*fw_ptr);
1600         *fw_ptr += sizeof(*cmd);
1601         remain -= sizeof(*cmd);
1602
1603         /* Ensure that the remain firmware data is long enough than the length
1604          * of command parameter. If not, the firmware file is corrupted.
1605          */
1606         if (remain < cmd->plen) {
1607                 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1608                 return -EFAULT;
1609         }
1610
1611         /* If there is a command that loads a patch in the firmware
1612          * file, then enable the patch upon success, otherwise just
1613          * disable the manufacturer mode, for example patch activation
1614          * is not required when the default firmware patch file is used
1615          * because there are no patch data to load.
1616          */
1617         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1618                 *disable_patch = 0;
1619
1620         cmd_param = *fw_ptr;
1621         *fw_ptr += cmd->plen;
1622         remain -= cmd->plen;
1623
1624         /* This reads the expected events when the above command is sent to the
1625          * device. Some vendor commands expects more than one events, for
1626          * example command status event followed by vendor specific event.
1627          * For this case, it only keeps the last expected event. so the command
1628          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1629          * last expected event.
1630          */
1631         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1632                 (*fw_ptr)++;
1633                 remain--;
1634
1635                 evt = (struct hci_event_hdr *)(*fw_ptr);
1636                 *fw_ptr += sizeof(*evt);
1637                 remain -= sizeof(*evt);
1638
1639                 if (remain < evt->plen) {
1640                         BT_ERR("%s Intel fw corrupted: invalid evt len",
1641                                hdev->name);
1642                         return -EFAULT;
1643                 }
1644
1645                 evt_param = *fw_ptr;
1646                 *fw_ptr += evt->plen;
1647                 remain -= evt->plen;
1648         }
1649
1650         /* Every HCI commands in the firmware file has its correspond event.
1651          * If event is not found or remain is smaller than zero, the firmware
1652          * file is corrupted.
1653          */
1654         if (!evt || !evt_param || remain < 0) {
1655                 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1656                 return -EFAULT;
1657         }
1658
1659         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1660                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1661         if (IS_ERR(skb)) {
1662                 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1663                        hdev->name, cmd->opcode, PTR_ERR(skb));
1664                 return PTR_ERR(skb);
1665         }
1666
1667         /* It ensures that the returned event matches the event data read from
1668          * the firmware file. At fist, it checks the length and then
1669          * the contents of the event.
1670          */
1671         if (skb->len != evt->plen) {
1672                 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1673                        le16_to_cpu(cmd->opcode));
1674                 kfree_skb(skb);
1675                 return -EFAULT;
1676         }
1677
1678         if (memcmp(skb->data, evt_param, evt->plen)) {
1679                 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1680                        hdev->name, le16_to_cpu(cmd->opcode));
1681                 kfree_skb(skb);
1682                 return -EFAULT;
1683         }
1684         kfree_skb(skb);
1685
1686         return 0;
1687 }
1688
1689 static int btusb_setup_intel(struct hci_dev *hdev)
1690 {
1691         struct sk_buff *skb;
1692         const struct firmware *fw;
1693         const u8 *fw_ptr;
1694         int disable_patch, err;
1695         struct intel_version ver;
1696
1697         BT_DBG("%s", hdev->name);
1698
1699         /* The controller has a bug with the first HCI command sent to it
1700          * returning number of completed commands as zero. This would stall the
1701          * command processing in the Bluetooth core.
1702          *
1703          * As a workaround, send HCI Reset command first which will reset the
1704          * number of completed commands and allow normal command processing
1705          * from now on.
1706          */
1707         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1708         if (IS_ERR(skb)) {
1709                 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1710                        hdev->name, PTR_ERR(skb));
1711                 return PTR_ERR(skb);
1712         }
1713         kfree_skb(skb);
1714
1715         /* Read Intel specific controller version first to allow selection of
1716          * which firmware file to load.
1717          *
1718          * The returned information are hardware variant and revision plus
1719          * firmware variant, revision and build number.
1720          */
1721         err = btintel_read_version(hdev, &ver);
1722         if (err)
1723                 return err;
1724
1725         bt_dev_info(hdev, "read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1726                     ver.hw_platform, ver.hw_variant, ver.hw_revision,
1727                     ver.fw_variant,  ver.fw_revision, ver.fw_build_num,
1728                     ver.fw_build_ww, ver.fw_build_yy, ver.fw_patch_num);
1729
1730         /* fw_patch_num indicates the version of patch the device currently
1731          * have. If there is no patch data in the device, it is always 0x00.
1732          * So, if it is other than 0x00, no need to patch the device again.
1733          */
1734         if (ver.fw_patch_num) {
1735                 bt_dev_info(hdev, "Intel device is already patched. "
1736                             "patch num: %02x", ver.fw_patch_num);
1737                 goto complete;
1738         }
1739
1740         /* Opens the firmware patch file based on the firmware version read
1741          * from the controller. If it fails to open the matching firmware
1742          * patch file, it tries to open the default firmware patch file.
1743          * If no patch file is found, allow the device to operate without
1744          * a patch.
1745          */
1746         fw = btusb_setup_intel_get_fw(hdev, &ver);
1747         if (!fw)
1748                 goto complete;
1749         fw_ptr = fw->data;
1750
1751         /* Enable the manufacturer mode of the controller.
1752          * Only while this mode is enabled, the driver can download the
1753          * firmware patch data and configuration parameters.
1754          */
1755         err = btintel_enter_mfg(hdev);
1756         if (err) {
1757                 release_firmware(fw);
1758                 return err;
1759         }
1760
1761         disable_patch = 1;
1762
1763         /* The firmware data file consists of list of Intel specific HCI
1764          * commands and its expected events. The first byte indicates the
1765          * type of the message, either HCI command or HCI event.
1766          *
1767          * It reads the command and its expected event from the firmware file,
1768          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1769          * the returned event is compared with the event read from the firmware
1770          * file and it will continue until all the messages are downloaded to
1771          * the controller.
1772          *
1773          * Once the firmware patching is completed successfully,
1774          * the manufacturer mode is disabled with reset and activating the
1775          * downloaded patch.
1776          *
1777          * If the firmware patching fails, the manufacturer mode is
1778          * disabled with reset and deactivating the patch.
1779          *
1780          * If the default patch file is used, no reset is done when disabling
1781          * the manufacturer.
1782          */
1783         while (fw->size > fw_ptr - fw->data) {
1784                 int ret;
1785
1786                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1787                                                  &disable_patch);
1788                 if (ret < 0)
1789                         goto exit_mfg_deactivate;
1790         }
1791
1792         release_firmware(fw);
1793
1794         if (disable_patch)
1795                 goto exit_mfg_disable;
1796
1797         /* Patching completed successfully and disable the manufacturer mode
1798          * with reset and activate the downloaded firmware patches.
1799          */
1800         err = btintel_exit_mfg(hdev, true, true);
1801         if (err)
1802                 return err;
1803
1804         bt_dev_info(hdev, "Intel firmware patch completed and activated");
1805
1806         goto complete;
1807
1808 exit_mfg_disable:
1809         /* Disable the manufacturer mode without reset */
1810         err = btintel_exit_mfg(hdev, false, false);
1811         if (err)
1812                 return err;
1813
1814         bt_dev_info(hdev, "Intel firmware patch completed");
1815
1816         goto complete;
1817
1818 exit_mfg_deactivate:
1819         release_firmware(fw);
1820
1821         /* Patching failed. Disable the manufacturer mode with reset and
1822          * deactivate the downloaded firmware patches.
1823          */
1824         err = btintel_exit_mfg(hdev, true, false);
1825         if (err)
1826                 return err;
1827
1828         bt_dev_info(hdev, "Intel firmware patch completed and deactivated");
1829
1830 complete:
1831         /* Set the event mask for Intel specific vendor events. This enables
1832          * a few extra events that are useful during general operation.
1833          */
1834         btintel_set_event_mask_mfg(hdev, false);
1835
1836         btintel_check_bdaddr(hdev);
1837         return 0;
1838 }
1839
1840 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
1841 {
1842         struct sk_buff *skb;
1843         struct hci_event_hdr *hdr;
1844         struct hci_ev_cmd_complete *evt;
1845
1846         skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_ATOMIC);
1847         if (!skb)
1848                 return -ENOMEM;
1849
1850         hdr = skb_put(skb, sizeof(*hdr));
1851         hdr->evt = HCI_EV_CMD_COMPLETE;
1852         hdr->plen = sizeof(*evt) + 1;
1853
1854         evt = skb_put(skb, sizeof(*evt));
1855         evt->ncmd = 0x01;
1856         evt->opcode = cpu_to_le16(opcode);
1857
1858         skb_put_u8(skb, 0x00);
1859
1860         hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
1861
1862         return hci_recv_frame(hdev, skb);
1863 }
1864
1865 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
1866                                  int count)
1867 {
1868         /* When the device is in bootloader mode, then it can send
1869          * events via the bulk endpoint. These events are treated the
1870          * same way as the ones received from the interrupt endpoint.
1871          */
1872         if (test_bit(BTUSB_BOOTLOADER, &data->flags))
1873                 return btusb_recv_intr(data, buffer, count);
1874
1875         return btusb_recv_bulk(data, buffer, count);
1876 }
1877
1878 static void btusb_intel_bootup(struct btusb_data *data, const void *ptr,
1879                                unsigned int len)
1880 {
1881         const struct intel_bootup *evt = ptr;
1882
1883         if (len != sizeof(*evt))
1884                 return;
1885
1886         if (test_and_clear_bit(BTUSB_BOOTING, &data->flags)) {
1887                 smp_mb__after_atomic();
1888                 wake_up_bit(&data->flags, BTUSB_BOOTING);
1889         }
1890 }
1891
1892 static void btusb_intel_secure_send_result(struct btusb_data *data,
1893                                            const void *ptr, unsigned int len)
1894 {
1895         const struct intel_secure_send_result *evt = ptr;
1896
1897         if (len != sizeof(*evt))
1898                 return;
1899
1900         if (evt->result)
1901                 set_bit(BTUSB_FIRMWARE_FAILED, &data->flags);
1902
1903         if (test_and_clear_bit(BTUSB_DOWNLOADING, &data->flags) &&
1904             test_bit(BTUSB_FIRMWARE_LOADED, &data->flags)) {
1905                 smp_mb__after_atomic();
1906                 wake_up_bit(&data->flags, BTUSB_DOWNLOADING);
1907         }
1908 }
1909
1910 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
1911 {
1912         struct btusb_data *data = hci_get_drvdata(hdev);
1913
1914         if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1915                 struct hci_event_hdr *hdr = (void *)skb->data;
1916
1917                 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
1918                     hdr->plen > 0) {
1919                         const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
1920                         unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
1921
1922                         switch (skb->data[2]) {
1923                         case 0x02:
1924                                 /* When switching to the operational firmware
1925                                  * the device sends a vendor specific event
1926                                  * indicating that the bootup completed.
1927                                  */
1928                                 btusb_intel_bootup(data, ptr, len);
1929                                 break;
1930                         case 0x06:
1931                                 /* When the firmware loading completes the
1932                                  * device sends out a vendor specific event
1933                                  * indicating the result of the firmware
1934                                  * loading.
1935                                  */
1936                                 btusb_intel_secure_send_result(data, ptr, len);
1937                                 break;
1938                         }
1939                 }
1940         }
1941
1942         return hci_recv_frame(hdev, skb);
1943 }
1944
1945 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
1946 {
1947         struct btusb_data *data = hci_get_drvdata(hdev);
1948         struct urb *urb;
1949
1950         BT_DBG("%s", hdev->name);
1951
1952         switch (hci_skb_pkt_type(skb)) {
1953         case HCI_COMMAND_PKT:
1954                 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1955                         struct hci_command_hdr *cmd = (void *)skb->data;
1956                         __u16 opcode = le16_to_cpu(cmd->opcode);
1957
1958                         /* When in bootloader mode and the command 0xfc09
1959                          * is received, it needs to be send down the
1960                          * bulk endpoint. So allocate a bulk URB instead.
1961                          */
1962                         if (opcode == 0xfc09)
1963                                 urb = alloc_bulk_urb(hdev, skb);
1964                         else
1965                                 urb = alloc_ctrl_urb(hdev, skb);
1966
1967                         /* When the 0xfc01 command is issued to boot into
1968                          * the operational firmware, it will actually not
1969                          * send a command complete event. To keep the flow
1970                          * control working inject that event here.
1971                          */
1972                         if (opcode == 0xfc01)
1973                                 inject_cmd_complete(hdev, opcode);
1974                 } else {
1975                         urb = alloc_ctrl_urb(hdev, skb);
1976                 }
1977                 if (IS_ERR(urb))
1978                         return PTR_ERR(urb);
1979
1980                 hdev->stat.cmd_tx++;
1981                 return submit_or_queue_tx_urb(hdev, urb);
1982
1983         case HCI_ACLDATA_PKT:
1984                 urb = alloc_bulk_urb(hdev, skb);
1985                 if (IS_ERR(urb))
1986                         return PTR_ERR(urb);
1987
1988                 hdev->stat.acl_tx++;
1989                 return submit_or_queue_tx_urb(hdev, urb);
1990
1991         case HCI_SCODATA_PKT:
1992                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1993                         return -ENODEV;
1994
1995                 urb = alloc_isoc_urb(hdev, skb);
1996                 if (IS_ERR(urb))
1997                         return PTR_ERR(urb);
1998
1999                 hdev->stat.sco_tx++;
2000                 return submit_tx_urb(hdev, urb);
2001         }
2002
2003         return -EILSEQ;
2004 }
2005
2006 static int btusb_setup_intel_new(struct hci_dev *hdev)
2007 {
2008         static const u8 reset_param[] = { 0x00, 0x01, 0x00, 0x01,
2009                                           0x00, 0x08, 0x04, 0x00 };
2010         struct btusb_data *data = hci_get_drvdata(hdev);
2011         struct sk_buff *skb;
2012         struct intel_version ver;
2013         struct intel_boot_params *params;
2014         const struct firmware *fw;
2015         const u8 *fw_ptr;
2016         u32 frag_len;
2017         char fwname[64];
2018         ktime_t calltime, delta, rettime;
2019         unsigned long long duration;
2020         int err;
2021
2022         BT_DBG("%s", hdev->name);
2023
2024         calltime = ktime_get();
2025
2026         /* Read the Intel version information to determine if the device
2027          * is in bootloader mode or if it already has operational firmware
2028          * loaded.
2029          */
2030         err = btintel_read_version(hdev, &ver);
2031         if (err)
2032                 return err;
2033
2034         /* The hardware platform number has a fixed value of 0x37 and
2035          * for now only accept this single value.
2036          */
2037         if (ver.hw_platform != 0x37) {
2038                 BT_ERR("%s: Unsupported Intel hardware platform (%u)",
2039                        hdev->name, ver.hw_platform);
2040                 return -EINVAL;
2041         }
2042
2043         /* Check for supported iBT hardware variants of this firmware
2044          * loading method.
2045          *
2046          * This check has been put in place to ensure correct forward
2047          * compatibility options when newer hardware variants come along.
2048          */
2049         switch (ver.hw_variant) {
2050         case 0x0b:      /* SfP */
2051         case 0x0c:      /* WsP */
2052         case 0x11:      /* JfP */
2053         case 0x12:      /* ThP */
2054                 break;
2055         default:
2056                 BT_ERR("%s: Unsupported Intel hardware variant (%u)",
2057                        hdev->name, ver.hw_variant);
2058                 return -EINVAL;
2059         }
2060
2061         btintel_version_info(hdev, &ver);
2062
2063         /* The firmware variant determines if the device is in bootloader
2064          * mode or is running operational firmware. The value 0x06 identifies
2065          * the bootloader and the value 0x23 identifies the operational
2066          * firmware.
2067          *
2068          * When the operational firmware is already present, then only
2069          * the check for valid Bluetooth device address is needed. This
2070          * determines if the device will be added as configured or
2071          * unconfigured controller.
2072          *
2073          * It is not possible to use the Secure Boot Parameters in this
2074          * case since that command is only available in bootloader mode.
2075          */
2076         if (ver.fw_variant == 0x23) {
2077                 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2078                 btintel_check_bdaddr(hdev);
2079                 return 0;
2080         }
2081
2082         /* If the device is not in bootloader mode, then the only possible
2083          * choice is to return an error and abort the device initialization.
2084          */
2085         if (ver.fw_variant != 0x06) {
2086                 BT_ERR("%s: Unsupported Intel firmware variant (%u)",
2087                        hdev->name, ver.fw_variant);
2088                 return -ENODEV;
2089         }
2090
2091         /* Read the secure boot parameters to identify the operating
2092          * details of the bootloader.
2093          */
2094         skb = __hci_cmd_sync(hdev, 0xfc0d, 0, NULL, HCI_INIT_TIMEOUT);
2095         if (IS_ERR(skb)) {
2096                 BT_ERR("%s: Reading Intel boot parameters failed (%ld)",
2097                        hdev->name, PTR_ERR(skb));
2098                 return PTR_ERR(skb);
2099         }
2100
2101         if (skb->len != sizeof(*params)) {
2102                 BT_ERR("%s: Intel boot parameters size mismatch", hdev->name);
2103                 kfree_skb(skb);
2104                 return -EILSEQ;
2105         }
2106
2107         params = (struct intel_boot_params *)skb->data;
2108
2109         bt_dev_info(hdev, "Device revision is %u",
2110                     le16_to_cpu(params->dev_revid));
2111
2112         bt_dev_info(hdev, "Secure boot is %s",
2113                     params->secure_boot ? "enabled" : "disabled");
2114
2115         bt_dev_info(hdev, "OTP lock is %s",
2116                     params->otp_lock ? "enabled" : "disabled");
2117
2118         bt_dev_info(hdev, "API lock is %s",
2119                     params->api_lock ? "enabled" : "disabled");
2120
2121         bt_dev_info(hdev, "Debug lock is %s",
2122                     params->debug_lock ? "enabled" : "disabled");
2123
2124         bt_dev_info(hdev, "Minimum firmware build %u week %u %u",
2125                     params->min_fw_build_nn, params->min_fw_build_cw,
2126                     2000 + params->min_fw_build_yy);
2127
2128         /* It is required that every single firmware fragment is acknowledged
2129          * with a command complete event. If the boot parameters indicate
2130          * that this bootloader does not send them, then abort the setup.
2131          */
2132         if (params->limited_cce != 0x00) {
2133                 BT_ERR("%s: Unsupported Intel firmware loading method (%u)",
2134                        hdev->name, params->limited_cce);
2135                 kfree_skb(skb);
2136                 return -EINVAL;
2137         }
2138
2139         /* If the OTP has no valid Bluetooth device address, then there will
2140          * also be no valid address for the operational firmware.
2141          */
2142         if (!bacmp(&params->otp_bdaddr, BDADDR_ANY)) {
2143                 bt_dev_info(hdev, "No device address configured");
2144                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2145         }
2146
2147         /* With this Intel bootloader only the hardware variant and device
2148          * revision information are used to select the right firmware for SfP
2149          * and WsP.
2150          *
2151          * The firmware filename is ibt-<hw_variant>-<dev_revid>.sfi.
2152          *
2153          * Currently the supported hardware variants are:
2154          *   11 (0x0b) for iBT3.0 (LnP/SfP)
2155          *   12 (0x0c) for iBT3.5 (WsP)
2156          *
2157          * For ThP/JfP and for future SKU's, the FW name varies based on HW
2158          * variant, HW revision and FW revision, as these are dependent on CNVi
2159          * and RF Combination.
2160          *
2161          *   17 (0x11) for iBT3.5 (JfP)
2162          *   18 (0x12) for iBT3.5 (ThP)
2163          *
2164          * The firmware file name for these will be
2165          * ibt-<hw_variant>-<hw_revision>-<fw_revision>.sfi.
2166          *
2167          */
2168         switch (ver.hw_variant) {
2169         case 0x0b:      /* SfP */
2170         case 0x0c:      /* WsP */
2171                 snprintf(fwname, sizeof(fwname), "intel/ibt-%u-%u.sfi",
2172                          le16_to_cpu(ver.hw_variant),
2173                          le16_to_cpu(params->dev_revid));
2174                 break;
2175         case 0x11:      /* JfP */
2176         case 0x12:      /* ThP */
2177                 snprintf(fwname, sizeof(fwname), "intel/ibt-%u-%u-%u.sfi",
2178                          le16_to_cpu(ver.hw_variant),
2179                          le16_to_cpu(ver.hw_revision),
2180                          le16_to_cpu(ver.fw_revision));
2181                 break;
2182         default:
2183                 BT_ERR("%s: Unsupported Intel firmware naming", hdev->name);
2184                 return -EINVAL;
2185         }
2186
2187         err = request_firmware(&fw, fwname, &hdev->dev);
2188         if (err < 0) {
2189                 BT_ERR("%s: Failed to load Intel firmware file (%d)",
2190                        hdev->name, err);
2191                 kfree_skb(skb);
2192                 return err;
2193         }
2194
2195         bt_dev_info(hdev, "Found device firmware: %s", fwname);
2196
2197         /* Save the DDC file name for later use to apply once the firmware
2198          * downloading is done.
2199          */
2200         switch (ver.hw_variant) {
2201         case 0x0b:      /* SfP */
2202         case 0x0c:      /* WsP */
2203                 snprintf(fwname, sizeof(fwname), "intel/ibt-%u-%u.ddc",
2204                          le16_to_cpu(ver.hw_variant),
2205                          le16_to_cpu(params->dev_revid));
2206                 break;
2207         case 0x11:      /* JfP */
2208         case 0x12:      /* ThP */
2209                 snprintf(fwname, sizeof(fwname), "intel/ibt-%u-%u-%u.ddc",
2210                          le16_to_cpu(ver.hw_variant),
2211                          le16_to_cpu(ver.hw_revision),
2212                          le16_to_cpu(ver.fw_revision));
2213                 break;
2214         default:
2215                 BT_ERR("%s: Unsupported Intel firmware naming", hdev->name);
2216                 return -EINVAL;
2217         }
2218
2219         kfree_skb(skb);
2220
2221         if (fw->size < 644) {
2222                 BT_ERR("%s: Invalid size of firmware file (%zu)",
2223                        hdev->name, fw->size);
2224                 err = -EBADF;
2225                 goto done;
2226         }
2227
2228         set_bit(BTUSB_DOWNLOADING, &data->flags);
2229
2230         /* Start the firmware download transaction with the Init fragment
2231          * represented by the 128 bytes of CSS header.
2232          */
2233         err = btintel_secure_send(hdev, 0x00, 128, fw->data);
2234         if (err < 0) {
2235                 BT_ERR("%s: Failed to send firmware header (%d)",
2236                        hdev->name, err);
2237                 goto done;
2238         }
2239
2240         /* Send the 256 bytes of public key information from the firmware
2241          * as the PKey fragment.
2242          */
2243         err = btintel_secure_send(hdev, 0x03, 256, fw->data + 128);
2244         if (err < 0) {
2245                 BT_ERR("%s: Failed to send firmware public key (%d)",
2246                        hdev->name, err);
2247                 goto done;
2248         }
2249
2250         /* Send the 256 bytes of signature information from the firmware
2251          * as the Sign fragment.
2252          */
2253         err = btintel_secure_send(hdev, 0x02, 256, fw->data + 388);
2254         if (err < 0) {
2255                 BT_ERR("%s: Failed to send firmware signature (%d)",
2256                        hdev->name, err);
2257                 goto done;
2258         }
2259
2260         fw_ptr = fw->data + 644;
2261         frag_len = 0;
2262
2263         while (fw_ptr - fw->data < fw->size) {
2264                 struct hci_command_hdr *cmd = (void *)(fw_ptr + frag_len);
2265
2266                 frag_len += sizeof(*cmd) + cmd->plen;
2267
2268                 /* The parameter length of the secure send command requires
2269                  * a 4 byte alignment. It happens so that the firmware file
2270                  * contains proper Intel_NOP commands to align the fragments
2271                  * as needed.
2272                  *
2273                  * Send set of commands with 4 byte alignment from the
2274                  * firmware data buffer as a single Data fragement.
2275                  */
2276                 if (!(frag_len % 4)) {
2277                         err = btintel_secure_send(hdev, 0x01, frag_len, fw_ptr);
2278                         if (err < 0) {
2279                                 BT_ERR("%s: Failed to send firmware data (%d)",
2280                                        hdev->name, err);
2281                                 goto done;
2282                         }
2283
2284                         fw_ptr += frag_len;
2285                         frag_len = 0;
2286                 }
2287         }
2288
2289         set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2290
2291         bt_dev_info(hdev, "Waiting for firmware download to complete");
2292
2293         /* Before switching the device into operational mode and with that
2294          * booting the loaded firmware, wait for the bootloader notification
2295          * that all fragments have been successfully received.
2296          *
2297          * When the event processing receives the notification, then the
2298          * BTUSB_DOWNLOADING flag will be cleared.
2299          *
2300          * The firmware loading should not take longer than 5 seconds
2301          * and thus just timeout if that happens and fail the setup
2302          * of this device.
2303          */
2304         err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
2305                                   TASK_INTERRUPTIBLE,
2306                                   msecs_to_jiffies(5000));
2307         if (err == -EINTR) {
2308                 BT_ERR("%s: Firmware loading interrupted", hdev->name);
2309                 goto done;
2310         }
2311
2312         if (err) {
2313                 BT_ERR("%s: Firmware loading timeout", hdev->name);
2314                 err = -ETIMEDOUT;
2315                 goto done;
2316         }
2317
2318         if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) {
2319                 BT_ERR("%s: Firmware loading failed", hdev->name);
2320                 err = -ENOEXEC;
2321                 goto done;
2322         }
2323
2324         rettime = ktime_get();
2325         delta = ktime_sub(rettime, calltime);
2326         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2327
2328         bt_dev_info(hdev, "Firmware loaded in %llu usecs", duration);
2329
2330 done:
2331         release_firmware(fw);
2332
2333         if (err < 0)
2334                 return err;
2335
2336         calltime = ktime_get();
2337
2338         set_bit(BTUSB_BOOTING, &data->flags);
2339
2340         skb = __hci_cmd_sync(hdev, 0xfc01, sizeof(reset_param), reset_param,
2341                              HCI_INIT_TIMEOUT);
2342         if (IS_ERR(skb))
2343                 return PTR_ERR(skb);
2344
2345         kfree_skb(skb);
2346
2347         /* The bootloader will not indicate when the device is ready. This
2348          * is done by the operational firmware sending bootup notification.
2349          *
2350          * Booting into operational firmware should not take longer than
2351          * 1 second. However if that happens, then just fail the setup
2352          * since something went wrong.
2353          */
2354         bt_dev_info(hdev, "Waiting for device to boot");
2355
2356         err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING,
2357                                   TASK_INTERRUPTIBLE,
2358                                   msecs_to_jiffies(1000));
2359
2360         if (err == -EINTR) {
2361                 BT_ERR("%s: Device boot interrupted", hdev->name);
2362                 return -EINTR;
2363         }
2364
2365         if (err) {
2366                 BT_ERR("%s: Device boot timeout", hdev->name);
2367                 return -ETIMEDOUT;
2368         }
2369
2370         rettime = ktime_get();
2371         delta = ktime_sub(rettime, calltime);
2372         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2373
2374         bt_dev_info(hdev, "Device booted in %llu usecs", duration);
2375
2376         clear_bit(BTUSB_BOOTLOADER, &data->flags);
2377
2378         /* Once the device is running in operational mode, it needs to apply
2379          * the device configuration (DDC) parameters.
2380          *
2381          * The device can work without DDC parameters, so even if it fails
2382          * to load the file, no need to fail the setup.
2383          */
2384         btintel_load_ddc_config(hdev, fwname);
2385
2386         /* Set the event mask for Intel specific vendor events. This enables
2387          * a few extra events that are useful during general operation. It
2388          * does not enable any debugging related events.
2389          *
2390          * The device will function correctly without these events enabled
2391          * and thus no need to fail the setup.
2392          */
2393         btintel_set_event_mask(hdev, false);
2394
2395         return 0;
2396 }
2397
2398 static int btusb_shutdown_intel(struct hci_dev *hdev)
2399 {
2400         struct sk_buff *skb;
2401         long ret;
2402
2403         /* Some platforms have an issue with BT LED when the interface is
2404          * down or BT radio is turned off, which takes 5 seconds to BT LED
2405          * goes off. This command turns off the BT LED immediately.
2406          */
2407         skb = __hci_cmd_sync(hdev, 0xfc3f, 0, NULL, HCI_INIT_TIMEOUT);
2408         if (IS_ERR(skb)) {
2409                 ret = PTR_ERR(skb);
2410                 BT_ERR("%s: turning off Intel device LED failed (%ld)",
2411                        hdev->name, ret);
2412                 return ret;
2413         }
2414         kfree_skb(skb);
2415
2416         return 0;
2417 }
2418
2419 #ifdef CONFIG_PM
2420 /* Configure an out-of-band gpio as wake-up pin, if specified in device tree */
2421 static int marvell_config_oob_wake(struct hci_dev *hdev)
2422 {
2423         struct sk_buff *skb;
2424         struct btusb_data *data = hci_get_drvdata(hdev);
2425         struct device *dev = &data->udev->dev;
2426         u16 pin, gap, opcode;
2427         int ret;
2428         u8 cmd[5];
2429
2430         /* Move on if no wakeup pin specified */
2431         if (of_property_read_u16(dev->of_node, "marvell,wakeup-pin", &pin) ||
2432             of_property_read_u16(dev->of_node, "marvell,wakeup-gap-ms", &gap))
2433                 return 0;
2434
2435         /* Vendor specific command to configure a GPIO as wake-up pin */
2436         opcode = hci_opcode_pack(0x3F, 0x59);
2437         cmd[0] = opcode & 0xFF;
2438         cmd[1] = opcode >> 8;
2439         cmd[2] = 2; /* length of parameters that follow */
2440         cmd[3] = pin;
2441         cmd[4] = gap; /* time in ms, for which wakeup pin should be asserted */
2442
2443         skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
2444         if (!skb) {
2445                 bt_dev_err(hdev, "%s: No memory\n", __func__);
2446                 return -ENOMEM;
2447         }
2448
2449         skb_put_data(skb, cmd, sizeof(cmd));
2450         hci_skb_pkt_type(skb) = HCI_COMMAND_PKT;
2451
2452         ret = btusb_send_frame(hdev, skb);
2453         if (ret) {
2454                 bt_dev_err(hdev, "%s: configuration failed\n", __func__);
2455                 kfree_skb(skb);
2456                 return ret;
2457         }
2458
2459         return 0;
2460 }
2461 #endif
2462
2463 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
2464                                     const bdaddr_t *bdaddr)
2465 {
2466         struct sk_buff *skb;
2467         u8 buf[8];
2468         long ret;
2469
2470         buf[0] = 0xfe;
2471         buf[1] = sizeof(bdaddr_t);
2472         memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
2473
2474         skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2475         if (IS_ERR(skb)) {
2476                 ret = PTR_ERR(skb);
2477                 bt_dev_err(hdev, "changing Marvell device address failed (%ld)",
2478                            ret);
2479                 return ret;
2480         }
2481         kfree_skb(skb);
2482
2483         return 0;
2484 }
2485
2486 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
2487                                     const bdaddr_t *bdaddr)
2488 {
2489         struct sk_buff *skb;
2490         u8 buf[10];
2491         long ret;
2492
2493         buf[0] = 0x01;
2494         buf[1] = 0x01;
2495         buf[2] = 0x00;
2496         buf[3] = sizeof(bdaddr_t);
2497         memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
2498
2499         skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2500         if (IS_ERR(skb)) {
2501                 ret = PTR_ERR(skb);
2502                 bt_dev_err(hdev, "Change address command failed (%ld)", ret);
2503                 return ret;
2504         }
2505         kfree_skb(skb);
2506
2507         return 0;
2508 }
2509
2510 #define QCA_DFU_PACKET_LEN      4096
2511
2512 #define QCA_GET_TARGET_VERSION  0x09
2513 #define QCA_CHECK_STATUS        0x05
2514 #define QCA_DFU_DOWNLOAD        0x01
2515
2516 #define QCA_SYSCFG_UPDATED      0x40
2517 #define QCA_PATCH_UPDATED       0x80
2518 #define QCA_DFU_TIMEOUT         3000
2519
2520 struct qca_version {
2521         __le32  rom_version;
2522         __le32  patch_version;
2523         __le32  ram_version;
2524         __le32  ref_clock;
2525         __u8    reserved[4];
2526 } __packed;
2527
2528 struct qca_rampatch_version {
2529         __le16  rom_version;
2530         __le16  patch_version;
2531 } __packed;
2532
2533 struct qca_device_info {
2534         u32     rom_version;
2535         u8      rampatch_hdr;   /* length of header in rampatch */
2536         u8      nvm_hdr;        /* length of header in NVM */
2537         u8      ver_offset;     /* offset of version structure in rampatch */
2538 };
2539
2540 static const struct qca_device_info qca_devices_table[] = {
2541         { 0x00000100, 20, 4, 10 }, /* Rome 1.0 */
2542         { 0x00000101, 20, 4, 10 }, /* Rome 1.1 */
2543         { 0x00000200, 28, 4, 18 }, /* Rome 2.0 */
2544         { 0x00000201, 28, 4, 18 }, /* Rome 2.1 */
2545         { 0x00000300, 28, 4, 18 }, /* Rome 3.0 */
2546         { 0x00000302, 28, 4, 18 }, /* Rome 3.2 */
2547 };
2548
2549 static int btusb_qca_send_vendor_req(struct hci_dev *hdev, u8 request,
2550                                      void *data, u16 size)
2551 {
2552         struct btusb_data *btdata = hci_get_drvdata(hdev);
2553         struct usb_device *udev = btdata->udev;
2554         int pipe, err;
2555         u8 *buf;
2556
2557         buf = kmalloc(size, GFP_KERNEL);
2558         if (!buf)
2559                 return -ENOMEM;
2560
2561         /* Found some of USB hosts have IOT issues with ours so that we should
2562          * not wait until HCI layer is ready.
2563          */
2564         pipe = usb_rcvctrlpipe(udev, 0);
2565         err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
2566                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2567         if (err < 0) {
2568                 bt_dev_err(hdev, "Failed to access otp area (%d)", err);
2569                 goto done;
2570         }
2571
2572         memcpy(data, buf, size);
2573
2574 done:
2575         kfree(buf);
2576
2577         return err;
2578 }
2579
2580 static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
2581                                        const struct firmware *firmware,
2582                                        size_t hdr_size)
2583 {
2584         struct btusb_data *btdata = hci_get_drvdata(hdev);
2585         struct usb_device *udev = btdata->udev;
2586         size_t count, size, sent = 0;
2587         int pipe, len, err;
2588         u8 *buf;
2589
2590         buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
2591         if (!buf)
2592                 return -ENOMEM;
2593
2594         count = firmware->size;
2595
2596         size = min_t(size_t, count, hdr_size);
2597         memcpy(buf, firmware->data, size);
2598
2599         /* USB patches should go down to controller through USB path
2600          * because binary format fits to go down through USB channel.
2601          * USB control path is for patching headers and USB bulk is for
2602          * patch body.
2603          */
2604         pipe = usb_sndctrlpipe(udev, 0);
2605         err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
2606                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2607         if (err < 0) {
2608                 bt_dev_err(hdev, "Failed to send headers (%d)", err);
2609                 goto done;
2610         }
2611
2612         sent += size;
2613         count -= size;
2614
2615         while (count) {
2616                 size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
2617
2618                 memcpy(buf, firmware->data + sent, size);
2619
2620                 pipe = usb_sndbulkpipe(udev, 0x02);
2621                 err = usb_bulk_msg(udev, pipe, buf, size, &len,
2622                                    QCA_DFU_TIMEOUT);
2623                 if (err < 0) {
2624                         bt_dev_err(hdev, "Failed to send body at %zd of %zd (%d)",
2625                                    sent, firmware->size, err);
2626                         break;
2627                 }
2628
2629                 if (size != len) {
2630                         bt_dev_err(hdev, "Failed to get bulk buffer");
2631                         err = -EILSEQ;
2632                         break;
2633                 }
2634
2635                 sent  += size;
2636                 count -= size;
2637         }
2638
2639 done:
2640         kfree(buf);
2641         return err;
2642 }
2643
2644 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
2645                                          struct qca_version *ver,
2646                                          const struct qca_device_info *info)
2647 {
2648         struct qca_rampatch_version *rver;
2649         const struct firmware *fw;
2650         u32 ver_rom, ver_patch;
2651         u16 rver_rom, rver_patch;
2652         char fwname[64];
2653         int err;
2654
2655         ver_rom = le32_to_cpu(ver->rom_version);
2656         ver_patch = le32_to_cpu(ver->patch_version);
2657
2658         snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom);
2659
2660         err = request_firmware(&fw, fwname, &hdev->dev);
2661         if (err) {
2662                 bt_dev_err(hdev, "failed to request rampatch file: %s (%d)",
2663                            fwname, err);
2664                 return err;
2665         }
2666
2667         bt_dev_info(hdev, "using rampatch file: %s", fwname);
2668
2669         rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
2670         rver_rom = le16_to_cpu(rver->rom_version);
2671         rver_patch = le16_to_cpu(rver->patch_version);
2672
2673         bt_dev_info(hdev, "QCA: patch rome 0x%x build 0x%x, "
2674                     "firmware rome 0x%x build 0x%x",
2675                     rver_rom, rver_patch, ver_rom, ver_patch);
2676
2677         if (rver_rom != ver_rom || rver_patch <= ver_patch) {
2678                 bt_dev_err(hdev, "rampatch file version did not match with firmware");
2679                 err = -EINVAL;
2680                 goto done;
2681         }
2682
2683         err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
2684
2685 done:
2686         release_firmware(fw);
2687
2688         return err;
2689 }
2690
2691 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
2692                                     struct qca_version *ver,
2693                                     const struct qca_device_info *info)
2694 {
2695         const struct firmware *fw;
2696         char fwname[64];
2697         int err;
2698
2699         snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x.bin",
2700                  le32_to_cpu(ver->rom_version));
2701
2702         err = request_firmware(&fw, fwname, &hdev->dev);
2703         if (err) {
2704                 bt_dev_err(hdev, "failed to request NVM file: %s (%d)",
2705                            fwname, err);
2706                 return err;
2707         }
2708
2709         bt_dev_info(hdev, "using NVM file: %s", fwname);
2710
2711         err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
2712
2713         release_firmware(fw);
2714
2715         return err;
2716 }
2717
2718 static int btusb_setup_qca(struct hci_dev *hdev)
2719 {
2720         const struct qca_device_info *info = NULL;
2721         struct qca_version ver;
2722         u32 ver_rom;
2723         u8 status;
2724         int i, err;
2725
2726         err = btusb_qca_send_vendor_req(hdev, QCA_GET_TARGET_VERSION, &ver,
2727                                         sizeof(ver));
2728         if (err < 0)
2729                 return err;
2730
2731         ver_rom = le32_to_cpu(ver.rom_version);
2732         for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
2733                 if (ver_rom == qca_devices_table[i].rom_version)
2734                         info = &qca_devices_table[i];
2735         }
2736         if (!info) {
2737                 bt_dev_err(hdev, "don't support firmware rome 0x%x", ver_rom);
2738                 return -ENODEV;
2739         }
2740
2741         err = btusb_qca_send_vendor_req(hdev, QCA_CHECK_STATUS, &status,
2742                                         sizeof(status));
2743         if (err < 0)
2744                 return err;
2745
2746         if (!(status & QCA_PATCH_UPDATED)) {
2747                 err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
2748                 if (err < 0)
2749                         return err;
2750         }
2751
2752         if (!(status & QCA_SYSCFG_UPDATED)) {
2753                 err = btusb_setup_qca_load_nvm(hdev, &ver, info);
2754                 if (err < 0)
2755                         return err;
2756         }
2757
2758         return 0;
2759 }
2760
2761 #ifdef CONFIG_BT_HCIBTUSB_BCM
2762 static inline int __set_diag_interface(struct hci_dev *hdev)
2763 {
2764         struct btusb_data *data = hci_get_drvdata(hdev);
2765         struct usb_interface *intf = data->diag;
2766         int i;
2767
2768         if (!data->diag)
2769                 return -ENODEV;
2770
2771         data->diag_tx_ep = NULL;
2772         data->diag_rx_ep = NULL;
2773
2774         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2775                 struct usb_endpoint_descriptor *ep_desc;
2776
2777                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2778
2779                 if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
2780                         data->diag_tx_ep = ep_desc;
2781                         continue;
2782                 }
2783
2784                 if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
2785                         data->diag_rx_ep = ep_desc;
2786                         continue;
2787                 }
2788         }
2789
2790         if (!data->diag_tx_ep || !data->diag_rx_ep) {
2791                 bt_dev_err(hdev, "invalid diagnostic descriptors");
2792                 return -ENODEV;
2793         }
2794
2795         return 0;
2796 }
2797
2798 static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable)
2799 {
2800         struct btusb_data *data = hci_get_drvdata(hdev);
2801         struct sk_buff *skb;
2802         struct urb *urb;
2803         unsigned int pipe;
2804
2805         if (!data->diag_tx_ep)
2806                 return ERR_PTR(-ENODEV);
2807
2808         urb = usb_alloc_urb(0, GFP_KERNEL);
2809         if (!urb)
2810                 return ERR_PTR(-ENOMEM);
2811
2812         skb = bt_skb_alloc(2, GFP_KERNEL);
2813         if (!skb) {
2814                 usb_free_urb(urb);
2815                 return ERR_PTR(-ENOMEM);
2816         }
2817
2818         skb_put_u8(skb, 0xf0);
2819         skb_put_u8(skb, enable);
2820
2821         pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress);
2822
2823         usb_fill_bulk_urb(urb, data->udev, pipe,
2824                           skb->data, skb->len, btusb_tx_complete, skb);
2825
2826         skb->dev = (void *)hdev;
2827
2828         return urb;
2829 }
2830
2831 static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable)
2832 {
2833         struct btusb_data *data = hci_get_drvdata(hdev);
2834         struct urb *urb;
2835
2836         if (!data->diag)
2837                 return -ENODEV;
2838
2839         if (!test_bit(HCI_RUNNING, &hdev->flags))
2840                 return -ENETDOWN;
2841
2842         urb = alloc_diag_urb(hdev, enable);
2843         if (IS_ERR(urb))
2844                 return PTR_ERR(urb);
2845
2846         return submit_or_queue_tx_urb(hdev, urb);
2847 }
2848 #endif
2849
2850 #ifdef CONFIG_PM
2851 static irqreturn_t btusb_oob_wake_handler(int irq, void *priv)
2852 {
2853         struct btusb_data *data = priv;
2854
2855         pm_wakeup_event(&data->udev->dev, 0);
2856         pm_system_wakeup();
2857
2858         /* Disable only if not already disabled (keep it balanced) */
2859         if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
2860                 disable_irq_nosync(irq);
2861                 disable_irq_wake(irq);
2862         }
2863         return IRQ_HANDLED;
2864 }
2865
2866 static const struct of_device_id btusb_match_table[] = {
2867         { .compatible = "usb1286,204e" },
2868         { }
2869 };
2870 MODULE_DEVICE_TABLE(of, btusb_match_table);
2871
2872 /* Use an oob wakeup pin? */
2873 static int btusb_config_oob_wake(struct hci_dev *hdev)
2874 {
2875         struct btusb_data *data = hci_get_drvdata(hdev);
2876         struct device *dev = &data->udev->dev;
2877         int irq, ret;
2878
2879         clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
2880
2881         if (!of_match_device(btusb_match_table, dev))
2882                 return 0;
2883
2884         /* Move on if no IRQ specified */
2885         irq = of_irq_get_byname(dev->of_node, "wakeup");
2886         if (irq <= 0) {
2887                 bt_dev_dbg(hdev, "%s: no OOB Wakeup IRQ in DT", __func__);
2888                 return 0;
2889         }
2890
2891         ret = devm_request_irq(&hdev->dev, irq, btusb_oob_wake_handler,
2892                                0, "OOB Wake-on-BT", data);
2893         if (ret) {
2894                 bt_dev_err(hdev, "%s: IRQ request failed", __func__);
2895                 return ret;
2896         }
2897
2898         ret = device_init_wakeup(dev, true);
2899         if (ret) {
2900                 bt_dev_err(hdev, "%s: failed to init_wakeup", __func__);
2901                 return ret;
2902         }
2903
2904         data->oob_wake_irq = irq;
2905         disable_irq(irq);
2906         bt_dev_info(hdev, "OOB Wake-on-BT configured at IRQ %u", irq);
2907         return 0;
2908 }
2909 #endif
2910
2911 static int btusb_probe(struct usb_interface *intf,
2912                        const struct usb_device_id *id)
2913 {
2914         struct usb_endpoint_descriptor *ep_desc;
2915         struct btusb_data *data;
2916         struct hci_dev *hdev;
2917         unsigned ifnum_base;
2918         int i, err;
2919
2920         BT_DBG("intf %p id %p", intf, id);
2921
2922         /* interface numbers are hardcoded in the spec */
2923         if (intf->cur_altsetting->desc.bInterfaceNumber != 0) {
2924                 if (!(id->driver_info & BTUSB_IFNUM_2))
2925                         return -ENODEV;
2926                 if (intf->cur_altsetting->desc.bInterfaceNumber != 2)
2927                         return -ENODEV;
2928         }
2929
2930         ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber;
2931
2932         if (!id->driver_info) {
2933                 const struct usb_device_id *match;
2934
2935                 match = usb_match_id(intf, blacklist_table);
2936                 if (match)
2937                         id = match;
2938         }
2939
2940         if (id->driver_info == BTUSB_IGNORE)
2941                 return -ENODEV;
2942
2943         if (id->driver_info & BTUSB_ATH3012) {
2944                 struct usb_device *udev = interface_to_usbdev(intf);
2945
2946                 /* Old firmware would otherwise let ath3k driver load
2947                  * patch and sysconfig files
2948                  */
2949                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
2950                         return -ENODEV;
2951         }
2952
2953         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
2954         if (!data)
2955                 return -ENOMEM;
2956
2957         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2958                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2959
2960                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
2961                         data->intr_ep = ep_desc;
2962                         continue;
2963                 }
2964
2965                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
2966                         data->bulk_tx_ep = ep_desc;
2967                         continue;
2968                 }
2969
2970                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
2971                         data->bulk_rx_ep = ep_desc;
2972                         continue;
2973                 }
2974         }
2975
2976         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
2977                 return -ENODEV;
2978
2979         if (id->driver_info & BTUSB_AMP) {
2980                 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
2981                 data->cmdreq = 0x2b;
2982         } else {
2983                 data->cmdreq_type = USB_TYPE_CLASS;
2984                 data->cmdreq = 0x00;
2985         }
2986
2987         data->udev = interface_to_usbdev(intf);
2988         data->intf = intf;
2989
2990         INIT_WORK(&data->work, btusb_work);
2991         INIT_WORK(&data->waker, btusb_waker);
2992         init_usb_anchor(&data->deferred);
2993         init_usb_anchor(&data->tx_anchor);
2994         spin_lock_init(&data->txlock);
2995
2996         init_usb_anchor(&data->intr_anchor);
2997         init_usb_anchor(&data->bulk_anchor);
2998         init_usb_anchor(&data->isoc_anchor);
2999         init_usb_anchor(&data->diag_anchor);
3000         spin_lock_init(&data->rxlock);
3001
3002         if (id->driver_info & BTUSB_INTEL_NEW) {
3003                 data->recv_event = btusb_recv_event_intel;
3004                 data->recv_bulk = btusb_recv_bulk_intel;
3005                 set_bit(BTUSB_BOOTLOADER, &data->flags);
3006         } else {
3007                 data->recv_event = hci_recv_frame;
3008                 data->recv_bulk = btusb_recv_bulk;
3009         }
3010
3011         hdev = hci_alloc_dev();
3012         if (!hdev)
3013                 return -ENOMEM;
3014
3015         hdev->bus = HCI_USB;
3016         hci_set_drvdata(hdev, data);
3017
3018         if (id->driver_info & BTUSB_AMP)
3019                 hdev->dev_type = HCI_AMP;
3020         else
3021                 hdev->dev_type = HCI_PRIMARY;
3022
3023         data->hdev = hdev;
3024
3025         SET_HCIDEV_DEV(hdev, &intf->dev);
3026
3027         hdev->open   = btusb_open;
3028         hdev->close  = btusb_close;
3029         hdev->flush  = btusb_flush;
3030         hdev->send   = btusb_send_frame;
3031         hdev->notify = btusb_notify;
3032
3033 #ifdef CONFIG_PM
3034         err = btusb_config_oob_wake(hdev);
3035         if (err)
3036                 goto out_free_dev;
3037
3038         /* Marvell devices may need a specific chip configuration */
3039         if (id->driver_info & BTUSB_MARVELL && data->oob_wake_irq) {
3040                 err = marvell_config_oob_wake(hdev);
3041                 if (err)
3042                         goto out_free_dev;
3043         }
3044 #endif
3045         if (id->driver_info & BTUSB_CW6622)
3046                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
3047
3048         if (id->driver_info & BTUSB_BCM2045)
3049                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
3050
3051         if (id->driver_info & BTUSB_BCM92035)
3052                 hdev->setup = btusb_setup_bcm92035;
3053
3054 #ifdef CONFIG_BT_HCIBTUSB_BCM
3055         if (id->driver_info & BTUSB_BCM_PATCHRAM) {
3056                 hdev->manufacturer = 15;
3057                 hdev->setup = btbcm_setup_patchram;
3058                 hdev->set_diag = btusb_bcm_set_diag;
3059                 hdev->set_bdaddr = btbcm_set_bdaddr;
3060
3061                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
3062                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
3063         }
3064
3065         if (id->driver_info & BTUSB_BCM_APPLE) {
3066                 hdev->manufacturer = 15;
3067                 hdev->setup = btbcm_setup_apple;
3068                 hdev->set_diag = btusb_bcm_set_diag;
3069
3070                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
3071                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
3072         }
3073 #endif
3074
3075         if (id->driver_info & BTUSB_INTEL) {
3076                 hdev->manufacturer = 2;
3077                 hdev->setup = btusb_setup_intel;
3078                 hdev->shutdown = btusb_shutdown_intel;
3079                 hdev->set_diag = btintel_set_diag_mfg;
3080                 hdev->set_bdaddr = btintel_set_bdaddr;
3081                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3082                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3083                 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
3084         }
3085
3086         if (id->driver_info & BTUSB_INTEL_NEW) {
3087                 hdev->manufacturer = 2;
3088                 hdev->send = btusb_send_frame_intel;
3089                 hdev->setup = btusb_setup_intel_new;
3090                 hdev->hw_error = btintel_hw_error;
3091                 hdev->set_diag = btintel_set_diag;
3092                 hdev->set_bdaddr = btintel_set_bdaddr;
3093                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3094                 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
3095         }
3096
3097         if (id->driver_info & BTUSB_MARVELL)
3098                 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
3099
3100         if (id->driver_info & BTUSB_SWAVE) {
3101                 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
3102                 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
3103         }
3104
3105         if (id->driver_info & BTUSB_INTEL_BOOT) {
3106                 hdev->manufacturer = 2;
3107                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3108         }
3109
3110         if (id->driver_info & BTUSB_ATH3012) {
3111                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
3112                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3113                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3114         }
3115
3116         if (id->driver_info & BTUSB_QCA_ROME) {
3117                 data->setup_on_usb = btusb_setup_qca;
3118                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
3119
3120                 /* QCA Rome devices lose their updated firmware over suspend,
3121                  * but the USB hub doesn't notice any status change.
3122                  * Explicitly request a device reset on resume.
3123                  */
3124                 set_bit(BTUSB_RESET_RESUME, &data->flags);
3125         }
3126
3127 #ifdef CONFIG_BT_HCIBTUSB_RTL
3128         if (id->driver_info & BTUSB_REALTEK) {
3129                 hdev->setup = btrtl_setup_realtek;
3130
3131                 /* Realtek devices lose their updated firmware over suspend,
3132                  * but the USB hub doesn't notice any status change.
3133                  * Explicitly request a device reset on resume.
3134                  */
3135                 set_bit(BTUSB_RESET_RESUME, &data->flags);
3136         }
3137 #endif
3138
3139         if (id->driver_info & BTUSB_AMP) {
3140                 /* AMP controllers do not support SCO packets */
3141                 data->isoc = NULL;
3142         } else {
3143                 /* Interface orders are hardcoded in the specification */
3144                 data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1);
3145         }
3146
3147         if (!reset)
3148                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3149
3150         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
3151                 if (!disable_scofix)
3152                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
3153         }
3154
3155         if (id->driver_info & BTUSB_BROKEN_ISOC)
3156                 data->isoc = NULL;
3157
3158         if (id->driver_info & BTUSB_DIGIANSWER) {
3159                 data->cmdreq_type = USB_TYPE_VENDOR;
3160                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3161         }
3162
3163         if (id->driver_info & BTUSB_CSR) {
3164                 struct usb_device *udev = data->udev;
3165                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
3166
3167                 /* Old firmware would otherwise execute USB reset */
3168                 if (bcdDevice < 0x117)
3169                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3170
3171                 /* Fake CSR devices with broken commands */
3172                 if (bcdDevice <= 0x100 || bcdDevice == 0x134)
3173                         hdev->setup = btusb_setup_csr;
3174
3175                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3176         }
3177
3178         if (id->driver_info & BTUSB_SNIFFER) {
3179                 struct usb_device *udev = data->udev;
3180
3181                 /* New sniffer firmware has crippled HCI interface */
3182                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
3183                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3184         }
3185
3186         if (id->driver_info & BTUSB_INTEL_BOOT) {
3187                 /* A bug in the bootloader causes that interrupt interface is
3188                  * only enabled after receiving SetInterface(0, AltSetting=0).
3189                  */
3190                 err = usb_set_interface(data->udev, 0, 0);
3191                 if (err < 0) {
3192                         BT_ERR("failed to set interface 0, alt 0 %d", err);
3193                         goto out_free_dev;
3194                 }
3195         }
3196
3197         if (data->isoc) {
3198                 err = usb_driver_claim_interface(&btusb_driver,
3199                                                  data->isoc, data);
3200                 if (err < 0)
3201                         goto out_free_dev;
3202         }
3203
3204 #ifdef CONFIG_BT_HCIBTUSB_BCM
3205         if (data->diag) {
3206                 if (!usb_driver_claim_interface(&btusb_driver,
3207                                                 data->diag, data))
3208                         __set_diag_interface(hdev);
3209                 else
3210                         data->diag = NULL;
3211         }
3212 #endif
3213
3214         err = hci_register_dev(hdev);
3215         if (err < 0)
3216                 goto out_free_dev;
3217
3218         usb_set_intfdata(intf, data);
3219
3220         return 0;
3221
3222 out_free_dev:
3223         hci_free_dev(hdev);
3224         return err;
3225 }
3226
3227 static void btusb_disconnect(struct usb_interface *intf)
3228 {
3229         struct btusb_data *data = usb_get_intfdata(intf);
3230         struct hci_dev *hdev;
3231
3232         BT_DBG("intf %p", intf);
3233
3234         if (!data)
3235                 return;
3236
3237         hdev = data->hdev;
3238         usb_set_intfdata(data->intf, NULL);
3239
3240         if (data->isoc)
3241                 usb_set_intfdata(data->isoc, NULL);
3242
3243         if (data->diag)
3244                 usb_set_intfdata(data->diag, NULL);
3245
3246         hci_unregister_dev(hdev);
3247
3248         if (intf == data->intf) {
3249                 if (data->isoc)
3250                         usb_driver_release_interface(&btusb_driver, data->isoc);
3251                 if (data->diag)
3252                         usb_driver_release_interface(&btusb_driver, data->diag);
3253         } else if (intf == data->isoc) {
3254                 if (data->diag)
3255                         usb_driver_release_interface(&btusb_driver, data->diag);
3256                 usb_driver_release_interface(&btusb_driver, data->intf);
3257         } else if (intf == data->diag) {
3258                 usb_driver_release_interface(&btusb_driver, data->intf);
3259                 if (data->isoc)
3260                         usb_driver_release_interface(&btusb_driver, data->isoc);
3261         }
3262
3263         if (data->oob_wake_irq)
3264                 device_init_wakeup(&data->udev->dev, false);
3265
3266         hci_free_dev(hdev);
3267 }
3268
3269 #ifdef CONFIG_PM
3270 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
3271 {
3272         struct btusb_data *data = usb_get_intfdata(intf);
3273
3274         BT_DBG("intf %p", intf);
3275
3276         if (data->suspend_count++)
3277                 return 0;
3278
3279         spin_lock_irq(&data->txlock);
3280         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
3281                 set_bit(BTUSB_SUSPENDING, &data->flags);
3282                 spin_unlock_irq(&data->txlock);
3283         } else {
3284                 spin_unlock_irq(&data->txlock);
3285                 data->suspend_count--;
3286                 return -EBUSY;
3287         }
3288
3289         cancel_work_sync(&data->work);
3290
3291         btusb_stop_traffic(data);
3292         usb_kill_anchored_urbs(&data->tx_anchor);
3293
3294         if (data->oob_wake_irq && device_may_wakeup(&data->udev->dev)) {
3295                 set_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
3296                 enable_irq_wake(data->oob_wake_irq);
3297                 enable_irq(data->oob_wake_irq);
3298         }
3299
3300         /* Optionally request a device reset on resume, but only when
3301          * wakeups are disabled. If wakeups are enabled we assume the
3302          * device will stay powered up throughout suspend.
3303          */
3304         if (test_bit(BTUSB_RESET_RESUME, &data->flags) &&
3305             !device_may_wakeup(&data->udev->dev))
3306                 data->udev->reset_resume = 1;
3307
3308         return 0;
3309 }
3310
3311 static void play_deferred(struct btusb_data *data)
3312 {
3313         struct urb *urb;
3314         int err;
3315
3316         while ((urb = usb_get_from_anchor(&data->deferred))) {
3317                 usb_anchor_urb(urb, &data->tx_anchor);
3318
3319                 err = usb_submit_urb(urb, GFP_ATOMIC);
3320                 if (err < 0) {
3321                         if (err != -EPERM && err != -ENODEV)
3322                                 BT_ERR("%s urb %p submission failed (%d)",
3323                                        data->hdev->name, urb, -err);
3324                         kfree(urb->setup_packet);
3325                         usb_unanchor_urb(urb);
3326                         usb_free_urb(urb);
3327                         break;
3328                 }
3329
3330                 data->tx_in_flight++;
3331                 usb_free_urb(urb);
3332         }
3333
3334         /* Cleanup the rest deferred urbs. */
3335         while ((urb = usb_get_from_anchor(&data->deferred))) {
3336                 kfree(urb->setup_packet);
3337                 usb_free_urb(urb);
3338         }
3339 }
3340
3341 static int btusb_resume(struct usb_interface *intf)
3342 {
3343         struct btusb_data *data = usb_get_intfdata(intf);
3344         struct hci_dev *hdev = data->hdev;
3345         int err = 0;
3346
3347         BT_DBG("intf %p", intf);
3348
3349         if (--data->suspend_count)
3350                 return 0;
3351
3352         /* Disable only if not already disabled (keep it balanced) */
3353         if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
3354                 disable_irq(data->oob_wake_irq);
3355                 disable_irq_wake(data->oob_wake_irq);
3356         }
3357
3358         if (!test_bit(HCI_RUNNING, &hdev->flags))
3359                 goto done;
3360
3361         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
3362                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
3363                 if (err < 0) {
3364                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
3365                         goto failed;
3366                 }
3367         }
3368
3369         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
3370                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
3371                 if (err < 0) {
3372                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
3373                         goto failed;
3374                 }
3375
3376                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
3377         }
3378
3379         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
3380                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
3381                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
3382                 else
3383                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
3384         }
3385
3386         spin_lock_irq(&data->txlock);
3387         play_deferred(data);
3388         clear_bit(BTUSB_SUSPENDING, &data->flags);
3389         spin_unlock_irq(&data->txlock);
3390         schedule_work(&data->work);
3391
3392         return 0;
3393
3394 failed:
3395         usb_scuttle_anchored_urbs(&data->deferred);
3396 done:
3397         spin_lock_irq(&data->txlock);
3398         clear_bit(BTUSB_SUSPENDING, &data->flags);
3399         spin_unlock_irq(&data->txlock);
3400
3401         return err;
3402 }
3403 #endif
3404
3405 static struct usb_driver btusb_driver = {
3406         .name           = "btusb",
3407         .probe          = btusb_probe,
3408         .disconnect     = btusb_disconnect,
3409 #ifdef CONFIG_PM
3410         .suspend        = btusb_suspend,
3411         .resume         = btusb_resume,
3412 #endif
3413         .id_table       = btusb_table,
3414         .supports_autosuspend = 1,
3415         .disable_hub_initiated_lpm = 1,
3416 };
3417
3418 module_usb_driver(btusb_driver);
3419
3420 module_param(disable_scofix, bool, 0644);
3421 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
3422
3423 module_param(force_scofix, bool, 0644);
3424 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
3425
3426 module_param(reset, bool, 0644);
3427 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
3428
3429 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
3430 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
3431 MODULE_VERSION(VERSION);
3432 MODULE_LICENSE("GPL");