drivers/bluetooth/btusb.c

   1 /*
   2  *
   3  *  Generic Bluetooth USB driver
   4  *
   5  *  Copyright (C) 2005-2008  Marcel Holtmann <marcel@holtmann.org>
   6  *
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, write to the Free Software
  20  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  *
  22  */
  23
  24 #include <linux/dmi.h>
  25 #include <linux/module.h>
  26 #include <linux/usb.h>
  27 #include <linux/usb/quirks.h>
  28 #include <linux/firmware.h>
  29 #include <linux/of_device.h>
  30 #include <linux/of_irq.h>
  31 #include <linux/suspend.h>
  32 #include <linux/gpio/consumer.h>
  33 #include <asm/unaligned.h>
  34
  35 #include <net/bluetooth/bluetooth.h>
  36 #include <net/bluetooth/hci_core.h>
  37
  38 #include "btintel.h"
  39 #include "btbcm.h"
  40 #include "btrtl.h"
  41
  42 #define VERSION "0.8"
  43
  44 static bool disable_scofix;
  45 static bool force_scofix;
  46 static bool enable_autosuspend = IS_ENABLED(CONFIG_BT_HCIBTUSB_AUTOSUSPEND);
  47
  48 static bool reset = true;
  49
  50 static struct usb_driver btusb_driver;
  51
  52 #define BTUSB_IGNORE            0x01
  53 #define BTUSB_DIGIANSWER        0x02
  54 #define BTUSB_CSR               0x04
  55 #define BTUSB_SNIFFER           0x08
  56 #define BTUSB_BCM92035          0x10
  57 #define BTUSB_BROKEN_ISOC       0x20
  58 #define BTUSB_WRONG_SCO_MTU     0x40
  59 #define BTUSB_ATH3012           0x80
  60 #define BTUSB_INTEL             0x100
  61 #define BTUSB_INTEL_BOOT        0x200
  62 #define BTUSB_BCM_PATCHRAM      0x400
  63 #define BTUSB_MARVELL           0x800
  64 #define BTUSB_SWAVE             0x1000
  65 #define BTUSB_INTEL_NEW         0x2000
  66 #define BTUSB_AMP               0x4000
  67 #define BTUSB_QCA_ROME          0x8000
  68 #define BTUSB_BCM_APPLE         0x10000
  69 #define BTUSB_REALTEK           0x20000
  70 #define BTUSB_BCM2045           0x40000
  71 #define BTUSB_IFNUM_2           0x80000
  72 #define BTUSB_CW6622            0x100000
  73
  74 static const struct usb_device_id btusb_table[] = {
  75         /* Generic Bluetooth USB device */
  76         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  77
  78         /* Generic Bluetooth AMP device */
  79         { USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP },
  80
  81         /* Generic Bluetooth USB interface */
  82         { USB_INTERFACE_INFO(0xe0, 0x01, 0x01) },
  83
  84         /* Apple-specific (Broadcom) devices */
  85         { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01),
  86           .driver_info = BTUSB_BCM_APPLE | BTUSB_IFNUM_2 },
  87
  88         /* MediaTek MT76x0E */
  89         { USB_DEVICE(0x0e8d, 0x763f) },
  90
  91         /* Broadcom SoftSailing reporting vendor specific */
  92         { USB_DEVICE(0x0a5c, 0x21e1) },
  93
  94         /* Apple MacBookPro 7,1 */
  95         { USB_DEVICE(0x05ac, 0x8213) },
  96
  97         /* Apple iMac11,1 */
  98         { USB_DEVICE(0x05ac, 0x8215) },
  99
 100         /* Apple MacBookPro6,2 */
 101         { USB_DEVICE(0x05ac, 0x8218) },
 102
 103         /* Apple MacBookAir3,1, MacBookAir3,2 */
 104         { USB_DEVICE(0x05ac, 0x821b) },
 105
 106         /* Apple MacBookAir4,1 */
 107         { USB_DEVICE(0x05ac, 0x821f) },
 108
 109         /* Apple MacBookPro8,2 */
 110         { USB_DEVICE(0x05ac, 0x821a) },
 111
 112         /* Apple MacMini5,1 */
 113         { USB_DEVICE(0x05ac, 0x8281) },
 114
 115         /* AVM BlueFRITZ! USB v2.0 */
 116         { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE },
 117
 118         /* Bluetooth Ultraport Module from IBM */
 119         { USB_DEVICE(0x04bf, 0x030a) },
 120
 121         /* ALPS Modules with non-standard id */
 122         { USB_DEVICE(0x044e, 0x3001) },
 123         { USB_DEVICE(0x044e, 0x3002) },
 124
 125         /* Ericsson with non-standard id */
 126         { USB_DEVICE(0x0bdb, 0x1002) },
 127
 128         /* Canyon CN-BTU1 with HID interfaces */
 129         { USB_DEVICE(0x0c10, 0x0000) },
 130
 131         /* Broadcom BCM20702A0 */
 132         { USB_DEVICE(0x413c, 0x8197) },
 133
 134         /* Broadcom BCM20702B0 (Dynex/Insignia) */
 135         { USB_DEVICE(0x19ff, 0x0239), .driver_info = BTUSB_BCM_PATCHRAM },
 136
 137         /* Broadcom BCM43142A0 (Foxconn/Lenovo) */
 138         { USB_VENDOR_AND_INTERFACE_INFO(0x105b, 0xff, 0x01, 0x01),
 139           .driver_info = BTUSB_BCM_PATCHRAM },
 140
 141         /* Broadcom BCM920703 (HTC Vive) */
 142         { USB_VENDOR_AND_INTERFACE_INFO(0x0bb4, 0xff, 0x01, 0x01),
 143           .driver_info = BTUSB_BCM_PATCHRAM },
 144
 145         /* Foxconn - Hon Hai */
 146         { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01),
 147           .driver_info = BTUSB_BCM_PATCHRAM },
 148
 149         /* Lite-On Technology - Broadcom based */
 150         { USB_VENDOR_AND_INTERFACE_INFO(0x04ca, 0xff, 0x01, 0x01),
 151           .driver_info = BTUSB_BCM_PATCHRAM },
 152
 153         /* Broadcom devices with vendor specific id */
 154         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
 155           .driver_info = BTUSB_BCM_PATCHRAM },
 156
 157         /* ASUSTek Computer - Broadcom based */
 158         { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01),
 159           .driver_info = BTUSB_BCM_PATCHRAM },
 160
 161         /* Belkin F8065bf - Broadcom based */
 162         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01),
 163           .driver_info = BTUSB_BCM_PATCHRAM },
 164
 165         /* IMC Networks - Broadcom based */
 166         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01),
 167           .driver_info = BTUSB_BCM_PATCHRAM },
 168
 169         /* Dell Computer - Broadcom based  */
 170         { USB_VENDOR_AND_INTERFACE_INFO(0x413c, 0xff, 0x01, 0x01),
 171           .driver_info = BTUSB_BCM_PATCHRAM },
 172
 173         /* Toshiba Corp - Broadcom based */
 174         { USB_VENDOR_AND_INTERFACE_INFO(0x0930, 0xff, 0x01, 0x01),
 175           .driver_info = BTUSB_BCM_PATCHRAM },
 176
 177         /* Intel Bluetooth USB Bootloader (RAM module) */
 178         { USB_DEVICE(0x8087, 0x0a5a),
 179           .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
 180
 181         { }     /* Terminating entry */
 182 };
 183
 184 MODULE_DEVICE_TABLE(usb, btusb_table);
 185
 186 static const struct usb_device_id blacklist_table[] = {
 187         /* CSR BlueCore devices */
 188         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 189
 190         /* Broadcom BCM2033 without firmware */
 191         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 192
 193         /* Broadcom BCM2045 devices */
 194         { USB_DEVICE(0x0a5c, 0x2045), .driver_info = BTUSB_BCM2045 },
 195
 196         /* Atheros 3011 with sflash firmware */
 197         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 198         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 199         { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE },
 200         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 201         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 202         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 203         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 204
 205         /* Atheros AR9285 Malbec with sflash firmware */
 206         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 207
 208         /* Atheros 3012 with sflash firmware */
 209         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 210         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 211         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 212         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 213         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 214         { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
 215         { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
 216         { USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 },
 217         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 218         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 219         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 220         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 221         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 222         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 223         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 224         { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
 225         { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
 226         { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
 227         { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 },
 228         { USB_DEVICE(0x04ca, 0x3018), .driver_info = BTUSB_ATH3012 },
 229         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 230         { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
 231         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 232         { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
 233         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 234         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 235         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 236         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 237         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 238         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
 239         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 240         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 241         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 242         { USB_DEVICE(0x0cf3, 0x817b), .driver_info = BTUSB_ATH3012 },
 243         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 244         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 245         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 246         { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 },
 247         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 248         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 249         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 250         { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 },
 251         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 252         { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
 253         { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
 254         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
 255         { USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 },
 256         { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
 257         { USB_DEVICE(0x13d3, 0x3487), .driver_info = BTUSB_ATH3012 },
 258         { USB_DEVICE(0x13d3, 0x3490), .driver_info = BTUSB_ATH3012 },
 259
 260         /* Atheros AR5BBU12 with sflash firmware */
 261         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 262
 263         /* Atheros AR5BBU12 with sflash firmware */
 264         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 265         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 266
 267         /* QCA ROME chipset */
 268         { USB_DEVICE(0x0cf3, 0x535b), .driver_info = BTUSB_QCA_ROME },
 269         { USB_DEVICE(0x0cf3, 0xe007), .driver_info = BTUSB_QCA_ROME },
 270         { USB_DEVICE(0x0cf3, 0xe009), .driver_info = BTUSB_QCA_ROME },
 271         { USB_DEVICE(0x0cf3, 0xe010), .driver_info = BTUSB_QCA_ROME },
 272         { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME },
 273         { USB_DEVICE(0x0cf3, 0xe301), .driver_info = BTUSB_QCA_ROME },
 274         { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME },
 275         { USB_DEVICE(0x0489, 0xe092), .driver_info = BTUSB_QCA_ROME },
 276         { USB_DEVICE(0x0489, 0xe09f), .driver_info = BTUSB_QCA_ROME },
 277         { USB_DEVICE(0x0489, 0xe0a2), .driver_info = BTUSB_QCA_ROME },
 278         { USB_DEVICE(0x04ca, 0x3011), .driver_info = BTUSB_QCA_ROME },
 279         { USB_DEVICE(0x04ca, 0x3015), .driver_info = BTUSB_QCA_ROME },
 280         { USB_DEVICE(0x04ca, 0x3016), .driver_info = BTUSB_QCA_ROME },
 281         { USB_DEVICE(0x04ca, 0x301a), .driver_info = BTUSB_QCA_ROME },
 282         { USB_DEVICE(0x13d3, 0x3496), .driver_info = BTUSB_QCA_ROME },
 283
 284         /* Broadcom BCM2035 */
 285         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 286         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 287         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 288
 289         /* Broadcom BCM2045 */
 290         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 291         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 292
 293         /* IBM/Lenovo ThinkPad with Broadcom chip */
 294         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 295         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 296
 297         /* HP laptop with Broadcom chip */
 298         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 299
 300         /* Dell laptop with Broadcom chip */
 301         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 302
 303         /* Dell Wireless 370 and 410 devices */
 304         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 305         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 306
 307         /* Belkin F8T012 and F8T013 devices */
 308         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 309         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 310
 311         /* Asus WL-BTD202 device */
 312         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 313
 314         /* Kensington Bluetooth USB adapter */
 315         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 316
 317         /* RTX Telecom based adapters with buggy SCO support */
 318         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 319         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 320
 321         /* CONWISE Technology based adapters with buggy SCO support */
 322         { USB_DEVICE(0x0e5e, 0x6622),
 323           .driver_info = BTUSB_BROKEN_ISOC | BTUSB_CW6622},
 324
 325         /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
 326         { USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE },
 327
 328         /* Digianswer devices */
 329         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 330         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 331
 332         /* CSR BlueCore Bluetooth Sniffer */
 333         { USB_DEVICE(0x0a12, 0x0002),
 334           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 335
 336         /* Frontline ComProbe Bluetooth Sniffer */
 337         { USB_DEVICE(0x16d3, 0x0002),
 338           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 339
 340         /* Marvell Bluetooth devices */
 341         { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
 342         { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
 343         { USB_DEVICE(0x1286, 0x204e), .driver_info = BTUSB_MARVELL },
 344
 345         /* Intel Bluetooth devices */
 346         { USB_DEVICE(0x8087, 0x0025), .driver_info = BTUSB_INTEL_NEW },
 347         { USB_DEVICE(0x8087, 0x0026), .driver_info = BTUSB_INTEL_NEW },
 348         { USB_DEVICE(0x8087, 0x0029), .driver_info = BTUSB_INTEL_NEW },
 349         { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR },
 350         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 351         { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
 352         { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_NEW },
 353         { USB_DEVICE(0x8087, 0x0aa7), .driver_info = BTUSB_INTEL },
 354         { USB_DEVICE(0x8087, 0x0aaa), .driver_info = BTUSB_INTEL_NEW },
 355
 356         /* Other Intel Bluetooth devices */
 357         { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01),
 358           .driver_info = BTUSB_IGNORE },
 359
 360         /* Realtek Bluetooth devices */
 361         { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01),
 362           .driver_info = BTUSB_REALTEK },
 363
 364         /* Additional Realtek 8723AE Bluetooth devices */
 365         { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK },
 366         { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK },
 367
 368         /* Additional Realtek 8723BE Bluetooth devices */
 369         { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK },
 370         { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK },
 371         { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
 372         { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
 373         { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },
 374         { USB_DEVICE(0x13d3, 0x3494), .driver_info = BTUSB_REALTEK },
 375
 376         /* Additional Realtek 8723BU Bluetooth devices */
 377         { USB_DEVICE(0x7392, 0xa611), .driver_info = BTUSB_REALTEK },
 378
 379         /* Additional Realtek 8723DE Bluetooth devices */
 380         { USB_DEVICE(0x0bda, 0xb009), .driver_info = BTUSB_REALTEK },
 381         { USB_DEVICE(0x2ff8, 0xb011), .driver_info = BTUSB_REALTEK },
 382
 383         /* Additional Realtek 8821AE Bluetooth devices */
 384         { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
 385         { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },
 386         { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK },
 387         { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK },
 388         { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK },
 389
 390         /* Additional Realtek 8822BE Bluetooth devices */
 391         { USB_DEVICE(0x13d3, 0x3526), .driver_info = BTUSB_REALTEK },
 392         { USB_DEVICE(0x0b05, 0x185c), .driver_info = BTUSB_REALTEK },
 393
 394         /* Silicon Wave based devices */
 395         { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE },
 396
 397         { }     /* Terminating entry */
 398 };
 399
 400 /* The Bluetooth USB module build into some devices needs to be reset on resume,
 401  * this is a problem with the platform (likely shutting off all power) not with
 402  * the module itself. So we use a DMI list to match known broken platforms.
 403  */
 404 static const struct dmi_system_id btusb_needs_reset_resume_table[] = {
 405         {
 406                 /* Dell OptiPlex 3060 (QCA ROME device 0cf3:e007) */
 407                 .matches = {
 408                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 409                         DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 3060"),
 410                 },
 411         },
 412         {
 413                 /* Dell XPS 9360 (QCA ROME device 0cf3:e300) */
 414                 .matches = {
 415                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 416                         DMI_MATCH(DMI_PRODUCT_NAME, "XPS 13 9360"),
 417                 },
 418         },
 419         {
 420                 /* Dell Inspiron 5565 (QCA ROME device 0cf3:e009) */
 421                 .matches = {
 422                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 423                         DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5565"),
 424                 },
 425         },
 426         {}
 427 };
 428
 429 #define BTUSB_MAX_ISOC_FRAMES   10
 430
 431 #define BTUSB_INTR_RUNNING      0
 432 #define BTUSB_BULK_RUNNING      1
 433 #define BTUSB_ISOC_RUNNING      2
 434 #define BTUSB_SUSPENDING        3
 435 #define BTUSB_DID_ISO_RESUME    4
 436 #define BTUSB_BOOTLOADER        5
 437 #define BTUSB_DOWNLOADING       6
 438 #define BTUSB_FIRMWARE_LOADED   7
 439 #define BTUSB_FIRMWARE_FAILED   8
 440 #define BTUSB_BOOTING           9
 441 #define BTUSB_DIAG_RUNNING      10
 442 #define BTUSB_OOB_WAKE_ENABLED  11
 443 #define BTUSB_HW_RESET_ACTIVE   12
 444
 445 struct btusb_data {
 446         struct hci_dev       *hdev;
 447         struct usb_device    *udev;
 448         struct usb_interface *intf;
 449         struct usb_interface *isoc;
 450         struct usb_interface *diag;
 451         unsigned isoc_ifnum;
 452
 453         unsigned long flags;
 454
 455         struct work_struct work;
 456         struct work_struct waker;
 457
 458         struct usb_anchor deferred;
 459         struct usb_anchor tx_anchor;
 460         int tx_in_flight;
 461         spinlock_t txlock;
 462
 463         struct usb_anchor intr_anchor;
 464         struct usb_anchor bulk_anchor;
 465         struct usb_anchor isoc_anchor;
 466         struct usb_anchor diag_anchor;
 467         spinlock_t rxlock;
 468
 469         struct sk_buff *evt_skb;
 470         struct sk_buff *acl_skb;
 471         struct sk_buff *sco_skb;
 472
 473         struct usb_endpoint_descriptor *intr_ep;
 474         struct usb_endpoint_descriptor *bulk_tx_ep;
 475         struct usb_endpoint_descriptor *bulk_rx_ep;
 476         struct usb_endpoint_descriptor *isoc_tx_ep;
 477         struct usb_endpoint_descriptor *isoc_rx_ep;
 478         struct usb_endpoint_descriptor *diag_tx_ep;
 479         struct usb_endpoint_descriptor *diag_rx_ep;
 480
 481         struct gpio_desc *reset_gpio;
 482
 483         __u8 cmdreq_type;
 484         __u8 cmdreq;
 485
 486         unsigned int sco_num;
 487         int isoc_altsetting;
 488         int suspend_count;
 489
 490         int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
 491         int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
 492
 493         int (*setup_on_usb)(struct hci_dev *hdev);
 494
 495         int oob_wake_irq;   /* irq for out-of-band wake-on-bt */
 496         unsigned cmd_timeout_cnt;
 497 };
 498
 499
 500 static void btusb_intel_cmd_timeout(struct hci_dev *hdev)
 501 {
 502         struct btusb_data *data = hci_get_drvdata(hdev);
 503         struct gpio_desc *reset_gpio = data->reset_gpio;
 504
 505         if (++data->cmd_timeout_cnt < 5)
 506                 return;
 507
 508         if (!reset_gpio) {
 509                 bt_dev_err(hdev, "No way to reset. Ignoring and continuing");
 510                 return;
 511         }
 512
 513         /*
 514          * Toggle the hard reset line if the platform provides one. The reset
 515          * is going to yank the device off the USB and then replug. So doing
 516          * once is enough. The cleanup is handled correctly on the way out
 517          * (standard USB disconnect), and the new device is detected cleanly
 518          * and bound to the driver again like it should be.
 519          */
 520         if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
 521                 bt_dev_err(hdev, "last reset failed? Not resetting again");
 522                 return;
 523         }
 524
 525         bt_dev_err(hdev, "Initiating HW reset via gpio");
 526         gpiod_set_value_cansleep(reset_gpio, 1);
 527         msleep(100);
 528         gpiod_set_value_cansleep(reset_gpio, 0);
 529 }
 530
 531 static inline void btusb_free_frags(struct btusb_data *data)
 532 {
 533         unsigned long flags;
 534
 535         spin_lock_irqsave(&data->rxlock, flags);
 536
 537         kfree_skb(data->evt_skb);
 538         data->evt_skb = NULL;
 539
 540         kfree_skb(data->acl_skb);
 541         data->acl_skb = NULL;
 542
 543         kfree_skb(data->sco_skb);
 544         data->sco_skb = NULL;
 545
 546         spin_unlock_irqrestore(&data->rxlock, flags);
 547 }
 548
 549 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
 550 {
 551         struct sk_buff *skb;
 552         unsigned long flags;
 553         int err = 0;
 554
 555         spin_lock_irqsave(&data->rxlock, flags);
 556         skb = data->evt_skb;
 557
 558         while (count) {
 559                 int len;
 560
 561                 if (!skb) {
 562                         skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
 563                         if (!skb) {
 564                                 err = -ENOMEM;
 565                                 break;
 566                         }
 567
 568                         hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
 569                         hci_skb_expect(skb) = HCI_EVENT_HDR_SIZE;
 570                 }
 571
 572                 len = min_t(uint, hci_skb_expect(skb), count);
 573                 skb_put_data(skb, buffer, len);
 574
 575                 count -= len;
 576                 buffer += len;
 577                 hci_skb_expect(skb) -= len;
 578
 579                 if (skb->len == HCI_EVENT_HDR_SIZE) {
 580                         /* Complete event header */
 581                         hci_skb_expect(skb) = hci_event_hdr(skb)->plen;
 582
 583                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 584                                 kfree_skb(skb);
 585                                 skb = NULL;
 586
 587                                 err = -EILSEQ;
 588                                 break;
 589                         }
 590                 }
 591
 592                 if (!hci_skb_expect(skb)) {
 593                         /* Complete frame */
 594                         data->recv_event(data->hdev, skb);
 595                         skb = NULL;
 596                 }
 597         }
 598
 599         data->evt_skb = skb;
 600         spin_unlock_irqrestore(&data->rxlock, flags);
 601
 602         return err;
 603 }
 604
 605 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
 606 {
 607         struct sk_buff *skb;
 608         unsigned long flags;
 609         int err = 0;
 610
 611         spin_lock_irqsave(&data->rxlock, flags);
 612         skb = data->acl_skb;
 613
 614         while (count) {
 615                 int len;
 616
 617                 if (!skb) {
 618                         skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
 619                         if (!skb) {
 620                                 err = -ENOMEM;
 621                                 break;
 622                         }
 623
 624                         hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT;
 625                         hci_skb_expect(skb) = HCI_ACL_HDR_SIZE;
 626                 }
 627
 628                 len = min_t(uint, hci_skb_expect(skb), count);
 629                 skb_put_data(skb, buffer, len);
 630
 631                 count -= len;
 632                 buffer += len;
 633                 hci_skb_expect(skb) -= len;
 634
 635                 if (skb->len == HCI_ACL_HDR_SIZE) {
 636                         __le16 dlen = hci_acl_hdr(skb)->dlen;
 637
 638                         /* Complete ACL header */
 639                         hci_skb_expect(skb) = __le16_to_cpu(dlen);
 640
 641                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 642                                 kfree_skb(skb);
 643                                 skb = NULL;
 644
 645                                 err = -EILSEQ;
 646                                 break;
 647                         }
 648                 }
 649
 650                 if (!hci_skb_expect(skb)) {
 651                         /* Complete frame */
 652                         hci_recv_frame(data->hdev, skb);
 653                         skb = NULL;
 654                 }
 655         }
 656
 657         data->acl_skb = skb;
 658         spin_unlock_irqrestore(&data->rxlock, flags);
 659
 660         return err;
 661 }
 662
 663 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
 664 {
 665         struct sk_buff *skb;
 666         unsigned long flags;
 667         int err = 0;
 668
 669         spin_lock_irqsave(&data->rxlock, flags);
 670         skb = data->sco_skb;
 671
 672         while (count) {
 673                 int len;
 674
 675                 if (!skb) {
 676                         skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
 677                         if (!skb) {
 678                                 err = -ENOMEM;
 679                                 break;
 680                         }
 681
 682                         hci_skb_pkt_type(skb) = HCI_SCODATA_PKT;
 683                         hci_skb_expect(skb) = HCI_SCO_HDR_SIZE;
 684                 }
 685
 686                 len = min_t(uint, hci_skb_expect(skb), count);
 687                 skb_put_data(skb, buffer, len);
 688
 689                 count -= len;
 690                 buffer += len;
 691                 hci_skb_expect(skb) -= len;
 692
 693                 if (skb->len == HCI_SCO_HDR_SIZE) {
 694                         /* Complete SCO header */
 695                         hci_skb_expect(skb) = hci_sco_hdr(skb)->dlen;
 696
 697                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 698                                 kfree_skb(skb);
 699                                 skb = NULL;
 700
 701                                 err = -EILSEQ;
 702                                 break;
 703                         }
 704                 }
 705
 706                 if (!hci_skb_expect(skb)) {
 707                         /* Complete frame */
 708                         hci_recv_frame(data->hdev, skb);
 709                         skb = NULL;
 710                 }
 711         }
 712
 713         data->sco_skb = skb;
 714         spin_unlock_irqrestore(&data->rxlock, flags);
 715
 716         return err;
 717 }
 718
 719 static void btusb_intr_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 (btusb_recv_intr(data, urb->transfer_buffer,
 735                                     urb->actual_length) < 0) {
 736                         bt_dev_err(hdev, "corrupted event 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_INTR_RUNNING, &data->flags))
 745                 return;
 746
 747         usb_mark_last_busy(data->udev);
 748         usb_anchor_urb(urb, &data->intr_anchor);
 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_intr_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;
 769
 770         BT_DBG("%s", hdev->name);
 771
 772         if (!data->intr_ep)
 773                 return -ENODEV;
 774
 775         urb = usb_alloc_urb(0, mem_flags);
 776         if (!urb)
 777                 return -ENOMEM;
 778
 779         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 780
 781         buf = kmalloc(size, mem_flags);
 782         if (!buf) {
 783                 usb_free_urb(urb);
 784                 return -ENOMEM;
 785         }
 786
 787         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 788
 789         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 790                          btusb_intr_complete, hdev, data->intr_ep->bInterval);
 791
 792         urb->transfer_flags |= URB_FREE_BUFFER;
 793
 794         usb_anchor_urb(urb, &data->intr_anchor);
 795
 796         err = usb_submit_urb(urb, mem_flags);
 797         if (err < 0) {
 798                 if (err != -EPERM && err != -ENODEV)
 799                         bt_dev_err(hdev, "urb %p submission failed (%d)",
 800                                    urb, -err);
 801                 usb_unanchor_urb(urb);
 802         }
 803
 804         usb_free_urb(urb);
 805
 806         return err;
 807 }
 808
 809 static void btusb_bulk_complete(struct urb *urb)
 810 {
 811         struct hci_dev *hdev = urb->context;
 812         struct btusb_data *data = hci_get_drvdata(hdev);
 813         int err;
 814
 815         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 816                urb->actual_length);
 817
 818         if (!test_bit(HCI_RUNNING, &hdev->flags))
 819                 return;
 820
 821         if (urb->status == 0) {
 822                 hdev->stat.byte_rx += urb->actual_length;
 823
 824                 if (data->recv_bulk(data, urb->transfer_buffer,
 825                                     urb->actual_length) < 0) {
 826                         bt_dev_err(hdev, "corrupted ACL packet");
 827                         hdev->stat.err_rx++;
 828                 }
 829         } else if (urb->status == -ENOENT) {
 830                 /* Avoid suspend failed when usb_kill_urb */
 831                 return;
 832         }
 833
 834         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 835                 return;
 836
 837         usb_anchor_urb(urb, &data->bulk_anchor);
 838         usb_mark_last_busy(data->udev);
 839
 840         err = usb_submit_urb(urb, GFP_ATOMIC);
 841         if (err < 0) {
 842                 /* -EPERM: urb is being killed;
 843                  * -ENODEV: device got disconnected
 844                  */
 845                 if (err != -EPERM && err != -ENODEV)
 846                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
 847                                    urb, -err);
 848                 usb_unanchor_urb(urb);
 849         }
 850 }
 851
 852 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 853 {
 854         struct btusb_data *data = hci_get_drvdata(hdev);
 855         struct urb *urb;
 856         unsigned char *buf;
 857         unsigned int pipe;
 858         int err, size = HCI_MAX_FRAME_SIZE;
 859
 860         BT_DBG("%s", hdev->name);
 861
 862         if (!data->bulk_rx_ep)
 863                 return -ENODEV;
 864
 865         urb = usb_alloc_urb(0, mem_flags);
 866         if (!urb)
 867                 return -ENOMEM;
 868
 869         buf = kmalloc(size, mem_flags);
 870         if (!buf) {
 871                 usb_free_urb(urb);
 872                 return -ENOMEM;
 873         }
 874
 875         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 876
 877         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
 878                           btusb_bulk_complete, hdev);
 879
 880         urb->transfer_flags |= URB_FREE_BUFFER;
 881
 882         usb_mark_last_busy(data->udev);
 883         usb_anchor_urb(urb, &data->bulk_anchor);
 884
 885         err = usb_submit_urb(urb, mem_flags);
 886         if (err < 0) {
 887                 if (err != -EPERM && err != -ENODEV)
 888                         bt_dev_err(hdev, "urb %p submission failed (%d)",
 889                                    urb, -err);
 890                 usb_unanchor_urb(urb);
 891         }
 892
 893         usb_free_urb(urb);
 894
 895         return err;
 896 }
 897
 898 static void btusb_isoc_complete(struct urb *urb)
 899 {
 900         struct hci_dev *hdev = urb->context;
 901         struct btusb_data *data = hci_get_drvdata(hdev);
 902         int i, err;
 903
 904         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 905                urb->actual_length);
 906
 907         if (!test_bit(HCI_RUNNING, &hdev->flags))
 908                 return;
 909
 910         if (urb->status == 0) {
 911                 for (i = 0; i < urb->number_of_packets; i++) {
 912                         unsigned int offset = urb->iso_frame_desc[i].offset;
 913                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 914
 915                         if (urb->iso_frame_desc[i].status)
 916                                 continue;
 917
 918                         hdev->stat.byte_rx += length;
 919
 920                         if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
 921                                             length) < 0) {
 922                                 bt_dev_err(hdev, "corrupted SCO packet");
 923                                 hdev->stat.err_rx++;
 924                         }
 925                 }
 926         } else if (urb->status == -ENOENT) {
 927                 /* Avoid suspend failed when usb_kill_urb */
 928                 return;
 929         }
 930
 931         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 932                 return;
 933
 934         usb_anchor_urb(urb, &data->isoc_anchor);
 935
 936         err = usb_submit_urb(urb, GFP_ATOMIC);
 937         if (err < 0) {
 938                 /* -EPERM: urb is being killed;
 939                  * -ENODEV: device got disconnected
 940                  */
 941                 if (err != -EPERM && err != -ENODEV)
 942                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
 943                                    urb, -err);
 944                 usb_unanchor_urb(urb);
 945         }
 946 }
 947
 948 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 949 {
 950         int i, offset = 0;
 951
 952         BT_DBG("len %d mtu %d", len, mtu);
 953
 954         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 955                                         i++, offset += mtu, len -= mtu) {
 956                 urb->iso_frame_desc[i].offset = offset;
 957                 urb->iso_frame_desc[i].length = mtu;
 958         }
 959
 960         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 961                 urb->iso_frame_desc[i].offset = offset;
 962                 urb->iso_frame_desc[i].length = len;
 963                 i++;
 964         }
 965
 966         urb->number_of_packets = i;
 967 }
 968
 969 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 970 {
 971         struct btusb_data *data = hci_get_drvdata(hdev);
 972         struct urb *urb;
 973         unsigned char *buf;
 974         unsigned int pipe;
 975         int err, size;
 976
 977         BT_DBG("%s", hdev->name);
 978
 979         if (!data->isoc_rx_ep)
 980                 return -ENODEV;
 981
 982         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 983         if (!urb)
 984                 return -ENOMEM;
 985
 986         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 987                                                 BTUSB_MAX_ISOC_FRAMES;
 988
 989         buf = kmalloc(size, mem_flags);
 990         if (!buf) {
 991                 usb_free_urb(urb);
 992                 return -ENOMEM;
 993         }
 994
 995         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 996
 997         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 998                          hdev, data->isoc_rx_ep->bInterval);
 999
1000         urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
1001
1002         __fill_isoc_descriptor(urb, size,
1003                                le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
1004
1005         usb_anchor_urb(urb, &data->isoc_anchor);
1006
1007         err = usb_submit_urb(urb, mem_flags);
1008         if (err < 0) {
1009                 if (err != -EPERM && err != -ENODEV)
1010                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1011                                    urb, -err);
1012                 usb_unanchor_urb(urb);
1013         }
1014
1015         usb_free_urb(urb);
1016
1017         return err;
1018 }
1019
1020 static void btusb_diag_complete(struct urb *urb)
1021 {
1022         struct hci_dev *hdev = urb->context;
1023         struct btusb_data *data = hci_get_drvdata(hdev);
1024         int err;
1025
1026         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1027                urb->actual_length);
1028
1029         if (urb->status == 0) {
1030                 struct sk_buff *skb;
1031
1032                 skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC);
1033                 if (skb) {
1034                         skb_put_data(skb, urb->transfer_buffer,
1035                                      urb->actual_length);
1036                         hci_recv_diag(hdev, skb);
1037                 }
1038         } else if (urb->status == -ENOENT) {
1039                 /* Avoid suspend failed when usb_kill_urb */
1040                 return;
1041         }
1042
1043         if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags))
1044                 return;
1045
1046         usb_anchor_urb(urb, &data->diag_anchor);
1047         usb_mark_last_busy(data->udev);
1048
1049         err = usb_submit_urb(urb, GFP_ATOMIC);
1050         if (err < 0) {
1051                 /* -EPERM: urb is being killed;
1052                  * -ENODEV: device got disconnected
1053                  */
1054                 if (err != -EPERM && err != -ENODEV)
1055                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1056                                    urb, -err);
1057                 usb_unanchor_urb(urb);
1058         }
1059 }
1060
1061 static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags)
1062 {
1063         struct btusb_data *data = hci_get_drvdata(hdev);
1064         struct urb *urb;
1065         unsigned char *buf;
1066         unsigned int pipe;
1067         int err, size = HCI_MAX_FRAME_SIZE;
1068
1069         BT_DBG("%s", hdev->name);
1070
1071         if (!data->diag_rx_ep)
1072                 return -ENODEV;
1073
1074         urb = usb_alloc_urb(0, mem_flags);
1075         if (!urb)
1076                 return -ENOMEM;
1077
1078         buf = kmalloc(size, mem_flags);
1079         if (!buf) {
1080                 usb_free_urb(urb);
1081                 return -ENOMEM;
1082         }
1083
1084         pipe = usb_rcvbulkpipe(data->udev, data->diag_rx_ep->bEndpointAddress);
1085
1086         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
1087                           btusb_diag_complete, hdev);
1088
1089         urb->transfer_flags |= URB_FREE_BUFFER;
1090
1091         usb_mark_last_busy(data->udev);
1092         usb_anchor_urb(urb, &data->diag_anchor);
1093
1094         err = usb_submit_urb(urb, mem_flags);
1095         if (err < 0) {
1096                 if (err != -EPERM && err != -ENODEV)
1097                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1098                                    urb, -err);
1099                 usb_unanchor_urb(urb);
1100         }
1101
1102         usb_free_urb(urb);
1103
1104         return err;
1105 }
1106
1107 static void btusb_tx_complete(struct urb *urb)
1108 {
1109         struct sk_buff *skb = urb->context;
1110         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1111         struct btusb_data *data = hci_get_drvdata(hdev);
1112         unsigned long flags;
1113
1114         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1115                urb->actual_length);
1116
1117         if (!test_bit(HCI_RUNNING, &hdev->flags))
1118                 goto done;
1119
1120         if (!urb->status)
1121                 hdev->stat.byte_tx += urb->transfer_buffer_length;
1122         else
1123                 hdev->stat.err_tx++;
1124
1125 done:
1126         spin_lock_irqsave(&data->txlock, flags);
1127         data->tx_in_flight--;
1128         spin_unlock_irqrestore(&data->txlock, flags);
1129
1130         kfree(urb->setup_packet);
1131
1132         kfree_skb(skb);
1133 }
1134
1135 static void btusb_isoc_tx_complete(struct urb *urb)
1136 {
1137         struct sk_buff *skb = urb->context;
1138         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1139
1140         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1141                urb->actual_length);
1142
1143         if (!test_bit(HCI_RUNNING, &hdev->flags))
1144                 goto done;
1145
1146         if (!urb->status)
1147                 hdev->stat.byte_tx += urb->transfer_buffer_length;
1148         else
1149                 hdev->stat.err_tx++;
1150
1151 done:
1152         kfree(urb->setup_packet);
1153
1154         kfree_skb(skb);
1155 }
1156
1157 static int btusb_open(struct hci_dev *hdev)
1158 {
1159         struct btusb_data *data = hci_get_drvdata(hdev);
1160         int err;
1161
1162         BT_DBG("%s", hdev->name);
1163
1164         err = usb_autopm_get_interface(data->intf);
1165         if (err < 0)
1166                 return err;
1167
1168         /* Patching USB firmware files prior to starting any URBs of HCI path
1169          * It is more safe to use USB bulk channel for downloading USB patch
1170          */
1171         if (data->setup_on_usb) {
1172                 err = data->setup_on_usb(hdev);
1173                 if (err < 0)
1174                         return err;
1175         }
1176
1177         data->intf->needs_remote_wakeup = 1;
1178         /* device specific wakeup source enabled and required for USB
1179          * remote wakeup while host is suspended
1180          */
1181         device_wakeup_enable(&data->udev->dev);
1182
1183         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
1184                 goto done;
1185
1186         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
1187         if (err < 0)
1188                 goto failed;
1189
1190         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1191         if (err < 0) {
1192                 usb_kill_anchored_urbs(&data->intr_anchor);
1193                 goto failed;
1194         }
1195
1196         set_bit(BTUSB_BULK_RUNNING, &data->flags);
1197         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1198
1199         if (data->diag) {
1200                 if (!btusb_submit_diag_urb(hdev, GFP_KERNEL))
1201                         set_bit(BTUSB_DIAG_RUNNING, &data->flags);
1202         }
1203
1204 done:
1205         usb_autopm_put_interface(data->intf);
1206         return 0;
1207
1208 failed:
1209         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1210         usb_autopm_put_interface(data->intf);
1211         return err;
1212 }
1213
1214 static void btusb_stop_traffic(struct btusb_data *data)
1215 {
1216         usb_kill_anchored_urbs(&data->intr_anchor);
1217         usb_kill_anchored_urbs(&data->bulk_anchor);
1218         usb_kill_anchored_urbs(&data->isoc_anchor);
1219         usb_kill_anchored_urbs(&data->diag_anchor);
1220 }
1221
1222 static int btusb_close(struct hci_dev *hdev)
1223 {
1224         struct btusb_data *data = hci_get_drvdata(hdev);
1225         int err;
1226
1227         BT_DBG("%s", hdev->name);
1228
1229         cancel_work_sync(&data->work);
1230         cancel_work_sync(&data->waker);
1231
1232         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1233         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1234         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1235         clear_bit(BTUSB_DIAG_RUNNING, &data->flags);
1236
1237         btusb_stop_traffic(data);
1238         btusb_free_frags(data);
1239
1240         err = usb_autopm_get_interface(data->intf);
1241         if (err < 0)
1242                 goto failed;
1243
1244         data->intf->needs_remote_wakeup = 0;
1245         device_wakeup_disable(&data->udev->dev);
1246         usb_autopm_put_interface(data->intf);
1247
1248 failed:
1249         usb_scuttle_anchored_urbs(&data->deferred);
1250         return 0;
1251 }
1252
1253 static int btusb_flush(struct hci_dev *hdev)
1254 {
1255         struct btusb_data *data = hci_get_drvdata(hdev);
1256
1257         BT_DBG("%s", hdev->name);
1258
1259         usb_kill_anchored_urbs(&data->tx_anchor);
1260         btusb_free_frags(data);
1261
1262         return 0;
1263 }
1264
1265 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
1266 {
1267         struct btusb_data *data = hci_get_drvdata(hdev);
1268         struct usb_ctrlrequest *dr;
1269         struct urb *urb;
1270         unsigned int pipe;
1271
1272         urb = usb_alloc_urb(0, GFP_KERNEL);
1273         if (!urb)
1274                 return ERR_PTR(-ENOMEM);
1275
1276         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
1277         if (!dr) {
1278                 usb_free_urb(urb);
1279                 return ERR_PTR(-ENOMEM);
1280         }
1281
1282         dr->bRequestType = data->cmdreq_type;
1283         dr->bRequest     = data->cmdreq;
1284         dr->wIndex       = 0;
1285         dr->wValue       = 0;
1286         dr->wLength      = __cpu_to_le16(skb->len);
1287
1288         pipe = usb_sndctrlpipe(data->udev, 0x00);
1289
1290         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
1291                              skb->data, skb->len, btusb_tx_complete, skb);
1292
1293         skb->dev = (void *)hdev;
1294
1295         return urb;
1296 }
1297
1298 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
1299 {
1300         struct btusb_data *data = hci_get_drvdata(hdev);
1301         struct urb *urb;
1302         unsigned int pipe;
1303
1304         if (!data->bulk_tx_ep)
1305                 return ERR_PTR(-ENODEV);
1306
1307         urb = usb_alloc_urb(0, GFP_KERNEL);
1308         if (!urb)
1309                 return ERR_PTR(-ENOMEM);
1310
1311         pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1312
1313         usb_fill_bulk_urb(urb, data->udev, pipe,
1314                           skb->data, skb->len, btusb_tx_complete, skb);
1315
1316         skb->dev = (void *)hdev;
1317
1318         return urb;
1319 }
1320
1321 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1322 {
1323         struct btusb_data *data = hci_get_drvdata(hdev);
1324         struct urb *urb;
1325         unsigned int pipe;
1326
1327         if (!data->isoc_tx_ep)
1328                 return ERR_PTR(-ENODEV);
1329
1330         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1331         if (!urb)
1332                 return ERR_PTR(-ENOMEM);
1333
1334         pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1335
1336         usb_fill_int_urb(urb, data->udev, pipe,
1337                          skb->data, skb->len, btusb_isoc_tx_complete,
1338                          skb, data->isoc_tx_ep->bInterval);
1339
1340         urb->transfer_flags  = URB_ISO_ASAP;
1341
1342         __fill_isoc_descriptor(urb, skb->len,
1343                                le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1344
1345         skb->dev = (void *)hdev;
1346
1347         return urb;
1348 }
1349
1350 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1351 {
1352         struct btusb_data *data = hci_get_drvdata(hdev);
1353         int err;
1354
1355         usb_anchor_urb(urb, &data->tx_anchor);
1356
1357         err = usb_submit_urb(urb, GFP_KERNEL);
1358         if (err < 0) {
1359                 if (err != -EPERM && err != -ENODEV)
1360                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1361                                    urb, -err);
1362                 kfree(urb->setup_packet);
1363                 usb_unanchor_urb(urb);
1364         } else {
1365                 usb_mark_last_busy(data->udev);
1366         }
1367
1368         usb_free_urb(urb);
1369         return err;
1370 }
1371
1372 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1373 {
1374         struct btusb_data *data = hci_get_drvdata(hdev);
1375         unsigned long flags;
1376         bool suspending;
1377
1378         spin_lock_irqsave(&data->txlock, flags);
1379         suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1380         if (!suspending)
1381                 data->tx_in_flight++;
1382         spin_unlock_irqrestore(&data->txlock, flags);
1383
1384         if (!suspending)
1385                 return submit_tx_urb(hdev, urb);
1386
1387         usb_anchor_urb(urb, &data->deferred);
1388         schedule_work(&data->waker);
1389
1390         usb_free_urb(urb);
1391         return 0;
1392 }
1393
1394 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1395 {
1396         struct urb *urb;
1397
1398         BT_DBG("%s", hdev->name);
1399
1400         switch (hci_skb_pkt_type(skb)) {
1401         case HCI_COMMAND_PKT:
1402                 urb = alloc_ctrl_urb(hdev, skb);
1403                 if (IS_ERR(urb))
1404                         return PTR_ERR(urb);
1405
1406                 hdev->stat.cmd_tx++;
1407                 return submit_or_queue_tx_urb(hdev, urb);
1408
1409         case HCI_ACLDATA_PKT:
1410                 urb = alloc_bulk_urb(hdev, skb);
1411                 if (IS_ERR(urb))
1412                         return PTR_ERR(urb);
1413
1414                 hdev->stat.acl_tx++;
1415                 return submit_or_queue_tx_urb(hdev, urb);
1416
1417         case HCI_SCODATA_PKT:
1418                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1419                         return -ENODEV;
1420
1421                 urb = alloc_isoc_urb(hdev, skb);
1422                 if (IS_ERR(urb))
1423                         return PTR_ERR(urb);
1424
1425                 hdev->stat.sco_tx++;
1426                 return submit_tx_urb(hdev, urb);
1427         }
1428
1429         return -EILSEQ;
1430 }
1431
1432 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1433 {
1434         struct btusb_data *data = hci_get_drvdata(hdev);
1435
1436         BT_DBG("%s evt %d", hdev->name, evt);
1437
1438         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1439                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1440                 schedule_work(&data->work);
1441         }
1442 }
1443
1444 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1445 {
1446         struct btusb_data *data = hci_get_drvdata(hdev);
1447         struct usb_interface *intf = data->isoc;
1448         struct usb_endpoint_descriptor *ep_desc;
1449         int i, err;
1450
1451         if (!data->isoc)
1452                 return -ENODEV;
1453
1454         err = usb_set_interface(data->udev, data->isoc_ifnum, altsetting);
1455         if (err < 0) {
1456                 bt_dev_err(hdev, "setting interface failed (%d)", -err);
1457                 return err;
1458         }
1459
1460         data->isoc_altsetting = altsetting;
1461
1462         data->isoc_tx_ep = NULL;
1463         data->isoc_rx_ep = NULL;
1464
1465         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1466                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1467
1468                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1469                         data->isoc_tx_ep = ep_desc;
1470                         continue;
1471                 }
1472
1473                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1474                         data->isoc_rx_ep = ep_desc;
1475                         continue;
1476                 }
1477         }
1478
1479         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1480                 bt_dev_err(hdev, "invalid SCO descriptors");
1481                 return -ENODEV;
1482         }
1483
1484         return 0;
1485 }
1486
1487 static void btusb_work(struct work_struct *work)
1488 {
1489         struct btusb_data *data = container_of(work, struct btusb_data, work);
1490         struct hci_dev *hdev = data->hdev;
1491         int new_alts;
1492         int err;
1493
1494         if (data->sco_num > 0) {
1495                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1496                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1497                         if (err < 0) {
1498                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1499                                 usb_kill_anchored_urbs(&data->isoc_anchor);
1500                                 return;
1501                         }
1502
1503                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1504                 }
1505
1506                 if (hdev->voice_setting & 0x0020) {
1507                         static const int alts[3] = { 2, 4, 5 };
1508
1509                         new_alts = alts[data->sco_num - 1];
1510                 } else {
1511                         new_alts = data->sco_num;
1512                 }
1513
1514                 if (data->isoc_altsetting != new_alts) {
1515                         unsigned long flags;
1516
1517                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1518                         usb_kill_anchored_urbs(&data->isoc_anchor);
1519
1520                         /* When isochronous alternate setting needs to be
1521                          * changed, because SCO connection has been added
1522                          * or removed, a packet fragment may be left in the
1523                          * reassembling state. This could lead to wrongly
1524                          * assembled fragments.
1525                          *
1526                          * Clear outstanding fragment when selecting a new
1527                          * alternate setting.
1528                          */
1529                         spin_lock_irqsave(&data->rxlock, flags);
1530                         kfree_skb(data->sco_skb);
1531                         data->sco_skb = NULL;
1532                         spin_unlock_irqrestore(&data->rxlock, flags);
1533
1534                         if (__set_isoc_interface(hdev, new_alts) < 0)
1535                                 return;
1536                 }
1537
1538                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1539                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1540                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1541                         else
1542                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1543                 }
1544         } else {
1545                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1546                 usb_kill_anchored_urbs(&data->isoc_anchor);
1547
1548                 __set_isoc_interface(hdev, 0);
1549                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1550                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1551         }
1552 }
1553
1554 static void btusb_waker(struct work_struct *work)
1555 {
1556         struct btusb_data *data = container_of(work, struct btusb_data, waker);
1557         int err;
1558
1559         err = usb_autopm_get_interface(data->intf);
1560         if (err < 0)
1561                 return;
1562
1563         usb_autopm_put_interface(data->intf);
1564 }
1565
1566 static int btusb_setup_bcm92035(struct hci_dev *hdev)
1567 {
1568         struct sk_buff *skb;
1569         u8 val = 0x00;
1570
1571         BT_DBG("%s", hdev->name);
1572
1573         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1574         if (IS_ERR(skb))
1575                 bt_dev_err(hdev, "BCM92035 command failed (%ld)", PTR_ERR(skb));
1576         else
1577                 kfree_skb(skb);
1578
1579         return 0;
1580 }
1581
1582 static int btusb_setup_csr(struct hci_dev *hdev)
1583 {
1584         struct hci_rp_read_local_version *rp;
1585         struct sk_buff *skb;
1586
1587         BT_DBG("%s", hdev->name);
1588
1589         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1590                              HCI_INIT_TIMEOUT);
1591         if (IS_ERR(skb)) {
1592                 int err = PTR_ERR(skb);
1593                 bt_dev_err(hdev, "CSR: Local version failed (%d)", err);
1594                 return err;
1595         }
1596
1597         if (skb->len != sizeof(struct hci_rp_read_local_version)) {
1598                 bt_dev_err(hdev, "CSR: Local version length mismatch");
1599                 kfree_skb(skb);
1600                 return -EIO;
1601         }
1602
1603         rp = (struct hci_rp_read_local_version *)skb->data;
1604
1605         /* Detect controllers which aren't real CSR ones. */
1606         if (le16_to_cpu(rp->manufacturer) != 10 ||
1607             le16_to_cpu(rp->lmp_subver) == 0x0c5c) {
1608                 /* Clear the reset quirk since this is not an actual
1609                  * early Bluetooth 1.1 device from CSR.
1610                  */
1611                 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1612
1613                 /* These fake CSR controllers have all a broken
1614                  * stored link key handling and so just disable it.
1615                  */
1616                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
1617         }
1618
1619         kfree_skb(skb);
1620
1621         return 0;
1622 }
1623
1624 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1625                                                        struct intel_version *ver)
1626 {
1627         const struct firmware *fw;
1628         char fwname[64];
1629         int ret;
1630
1631         snprintf(fwname, sizeof(fwname),
1632                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1633                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
1634                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1635                  ver->fw_build_ww, ver->fw_build_yy);
1636
1637         ret = request_firmware(&fw, fwname, &hdev->dev);
1638         if (ret < 0) {
1639                 if (ret == -EINVAL) {
1640                         bt_dev_err(hdev, "Intel firmware file request failed (%d)",
1641                                    ret);
1642                         return NULL;
1643                 }
1644
1645                 bt_dev_err(hdev, "failed to open Intel firmware file: %s (%d)",
1646                            fwname, ret);
1647
1648                 /* If the correct firmware patch file is not found, use the
1649                  * default firmware patch file instead
1650                  */
1651                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1652                          ver->hw_platform, ver->hw_variant);
1653                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1654                         bt_dev_err(hdev, "failed to open default fw file: %s",
1655                                    fwname);
1656                         return NULL;
1657                 }
1658         }
1659
1660         bt_dev_info(hdev, "Intel Bluetooth firmware file: %s", fwname);
1661
1662         return fw;
1663 }
1664
1665 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1666                                       const struct firmware *fw,
1667                                       const u8 **fw_ptr, int *disable_patch)
1668 {
1669         struct sk_buff *skb;
1670         struct hci_command_hdr *cmd;
1671         const u8 *cmd_param;
1672         struct hci_event_hdr *evt = NULL;
1673         const u8 *evt_param = NULL;
1674         int remain = fw->size - (*fw_ptr - fw->data);
1675
1676         /* The first byte indicates the types of the patch command or event.
1677          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1678          * in the current firmware buffer doesn't start with 0x01 or
1679          * the size of remain buffer is smaller than HCI command header,
1680          * the firmware file is corrupted and it should stop the patching
1681          * process.
1682          */
1683         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1684                 bt_dev_err(hdev, "Intel fw corrupted: invalid cmd read");
1685                 return -EINVAL;
1686         }
1687         (*fw_ptr)++;
1688         remain--;
1689
1690         cmd = (struct hci_command_hdr *)(*fw_ptr);
1691         *fw_ptr += sizeof(*cmd);
1692         remain -= sizeof(*cmd);
1693
1694         /* Ensure that the remain firmware data is long enough than the length
1695          * of command parameter. If not, the firmware file is corrupted.
1696          */
1697         if (remain < cmd->plen) {
1698                 bt_dev_err(hdev, "Intel fw corrupted: invalid cmd len");
1699                 return -EFAULT;
1700         }
1701
1702         /* If there is a command that loads a patch in the firmware
1703          * file, then enable the patch upon success, otherwise just
1704          * disable the manufacturer mode, for example patch activation
1705          * is not required when the default firmware patch file is used
1706          * because there are no patch data to load.
1707          */
1708         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1709                 *disable_patch = 0;
1710
1711         cmd_param = *fw_ptr;
1712         *fw_ptr += cmd->plen;
1713         remain -= cmd->plen;
1714
1715         /* This reads the expected events when the above command is sent to the
1716          * device. Some vendor commands expects more than one events, for
1717          * example command status event followed by vendor specific event.
1718          * For this case, it only keeps the last expected event. so the command
1719          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1720          * last expected event.
1721          */
1722         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1723                 (*fw_ptr)++;
1724                 remain--;
1725
1726                 evt = (struct hci_event_hdr *)(*fw_ptr);
1727                 *fw_ptr += sizeof(*evt);
1728                 remain -= sizeof(*evt);
1729
1730                 if (remain < evt->plen) {
1731                         bt_dev_err(hdev, "Intel fw corrupted: invalid evt len");
1732                         return -EFAULT;
1733                 }
1734
1735                 evt_param = *fw_ptr;
1736                 *fw_ptr += evt->plen;
1737                 remain -= evt->plen;
1738         }
1739
1740         /* Every HCI commands in the firmware file has its correspond event.
1741          * If event is not found or remain is smaller than zero, the firmware
1742          * file is corrupted.
1743          */
1744         if (!evt || !evt_param || remain < 0) {
1745                 bt_dev_err(hdev, "Intel fw corrupted: invalid evt read");
1746                 return -EFAULT;
1747         }
1748
1749         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1750                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1751         if (IS_ERR(skb)) {
1752                 bt_dev_err(hdev, "sending Intel patch command (0x%4.4x) failed (%ld)",
1753                            cmd->opcode, PTR_ERR(skb));
1754                 return PTR_ERR(skb);
1755         }
1756
1757         /* It ensures that the returned event matches the event data read from
1758          * the firmware file. At fist, it checks the length and then
1759          * the contents of the event.
1760          */
1761         if (skb->len != evt->plen) {
1762                 bt_dev_err(hdev, "mismatch event length (opcode 0x%4.4x)",
1763                            le16_to_cpu(cmd->opcode));
1764                 kfree_skb(skb);
1765                 return -EFAULT;
1766         }
1767
1768         if (memcmp(skb->data, evt_param, evt->plen)) {
1769                 bt_dev_err(hdev, "mismatch event parameter (opcode 0x%4.4x)",
1770                            le16_to_cpu(cmd->opcode));
1771                 kfree_skb(skb);
1772                 return -EFAULT;
1773         }
1774         kfree_skb(skb);
1775
1776         return 0;
1777 }
1778
1779 static int btusb_setup_intel(struct hci_dev *hdev)
1780 {
1781         struct sk_buff *skb;
1782         const struct firmware *fw;
1783         const u8 *fw_ptr;
1784         int disable_patch, err;
1785         struct intel_version ver;
1786
1787         BT_DBG("%s", hdev->name);
1788
1789         /* The controller has a bug with the first HCI command sent to it
1790          * returning number of completed commands as zero. This would stall the
1791          * command processing in the Bluetooth core.
1792          *
1793          * As a workaround, send HCI Reset command first which will reset the
1794          * number of completed commands and allow normal command processing
1795          * from now on.
1796          */
1797         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1798         if (IS_ERR(skb)) {
1799                 bt_dev_err(hdev, "sending initial HCI reset command failed (%ld)",
1800                            PTR_ERR(skb));
1801                 return PTR_ERR(skb);
1802         }
1803         kfree_skb(skb);
1804
1805         /* Read Intel specific controller version first to allow selection of
1806          * which firmware file to load.
1807          *
1808          * The returned information are hardware variant and revision plus
1809          * firmware variant, revision and build number.
1810          */
1811         err = btintel_read_version(hdev, &ver);
1812         if (err)
1813                 return err;
1814
1815         bt_dev_info(hdev, "read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1816                     ver.hw_platform, ver.hw_variant, ver.hw_revision,
1817                     ver.fw_variant,  ver.fw_revision, ver.fw_build_num,
1818                     ver.fw_build_ww, ver.fw_build_yy, ver.fw_patch_num);
1819
1820         /* fw_patch_num indicates the version of patch the device currently
1821          * have. If there is no patch data in the device, it is always 0x00.
1822          * So, if it is other than 0x00, no need to patch the device again.
1823          */
1824         if (ver.fw_patch_num) {
1825                 bt_dev_info(hdev, "Intel device is already patched. "
1826                             "patch num: %02x", ver.fw_patch_num);
1827                 goto complete;
1828         }
1829
1830         /* Opens the firmware patch file based on the firmware version read
1831          * from the controller. If it fails to open the matching firmware
1832          * patch file, it tries to open the default firmware patch file.
1833          * If no patch file is found, allow the device to operate without
1834          * a patch.
1835          */
1836         fw = btusb_setup_intel_get_fw(hdev, &ver);
1837         if (!fw)
1838                 goto complete;
1839         fw_ptr = fw->data;
1840
1841         /* Enable the manufacturer mode of the controller.
1842          * Only while this mode is enabled, the driver can download the
1843          * firmware patch data and configuration parameters.
1844          */
1845         err = btintel_enter_mfg(hdev);
1846         if (err) {
1847                 release_firmware(fw);
1848                 return err;
1849         }
1850
1851         disable_patch = 1;
1852
1853         /* The firmware data file consists of list of Intel specific HCI
1854          * commands and its expected events. The first byte indicates the
1855          * type of the message, either HCI command or HCI event.
1856          *
1857          * It reads the command and its expected event from the firmware file,
1858          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1859          * the returned event is compared with the event read from the firmware
1860          * file and it will continue until all the messages are downloaded to
1861          * the controller.
1862          *
1863          * Once the firmware patching is completed successfully,
1864          * the manufacturer mode is disabled with reset and activating the
1865          * downloaded patch.
1866          *
1867          * If the firmware patching fails, the manufacturer mode is
1868          * disabled with reset and deactivating the patch.
1869          *
1870          * If the default patch file is used, no reset is done when disabling
1871          * the manufacturer.
1872          */
1873         while (fw->size > fw_ptr - fw->data) {
1874                 int ret;
1875
1876                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1877                                                  &disable_patch);
1878                 if (ret < 0)
1879                         goto exit_mfg_deactivate;
1880         }
1881
1882         release_firmware(fw);
1883
1884         if (disable_patch)
1885                 goto exit_mfg_disable;
1886
1887         /* Patching completed successfully and disable the manufacturer mode
1888          * with reset and activate the downloaded firmware patches.
1889          */
1890         err = btintel_exit_mfg(hdev, true, true);
1891         if (err)
1892                 return err;
1893
1894         bt_dev_info(hdev, "Intel firmware patch completed and activated");
1895
1896         goto complete;
1897
1898 exit_mfg_disable:
1899         /* Disable the manufacturer mode without reset */
1900         err = btintel_exit_mfg(hdev, false, false);
1901         if (err)
1902                 return err;
1903
1904         bt_dev_info(hdev, "Intel firmware patch completed");
1905
1906         goto complete;
1907
1908 exit_mfg_deactivate:
1909         release_firmware(fw);
1910
1911         /* Patching failed. Disable the manufacturer mode with reset and
1912          * deactivate the downloaded firmware patches.
1913          */
1914         err = btintel_exit_mfg(hdev, true, false);
1915         if (err)
1916                 return err;
1917
1918         bt_dev_info(hdev, "Intel firmware patch completed and deactivated");
1919
1920 complete:
1921         /* Set the event mask for Intel specific vendor events. This enables
1922          * a few extra events that are useful during general operation.
1923          */
1924         btintel_set_event_mask_mfg(hdev, false);
1925
1926         btintel_check_bdaddr(hdev);
1927         return 0;
1928 }
1929
1930 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
1931 {
1932         struct sk_buff *skb;
1933         struct hci_event_hdr *hdr;
1934         struct hci_ev_cmd_complete *evt;
1935
1936         skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_KERNEL);
1937         if (!skb)
1938                 return -ENOMEM;
1939
1940         hdr = skb_put(skb, sizeof(*hdr));
1941         hdr->evt = HCI_EV_CMD_COMPLETE;
1942         hdr->plen = sizeof(*evt) + 1;
1943
1944         evt = skb_put(skb, sizeof(*evt));
1945         evt->ncmd = 0x01;
1946         evt->opcode = cpu_to_le16(opcode);
1947
1948         skb_put_u8(skb, 0x00);
1949
1950         hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
1951
1952         return hci_recv_frame(hdev, skb);
1953 }
1954
1955 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
1956                                  int count)
1957 {
1958         /* When the device is in bootloader mode, then it can send
1959          * events via the bulk endpoint. These events are treated the
1960          * same way as the ones received from the interrupt endpoint.
1961          */
1962         if (test_bit(BTUSB_BOOTLOADER, &data->flags))
1963                 return btusb_recv_intr(data, buffer, count);
1964
1965         return btusb_recv_bulk(data, buffer, count);
1966 }
1967
1968 static void btusb_intel_bootup(struct btusb_data *data, const void *ptr,
1969                                unsigned int len)
1970 {
1971         const struct intel_bootup *evt = ptr;
1972
1973         if (len != sizeof(*evt))
1974                 return;
1975
1976         if (test_and_clear_bit(BTUSB_BOOTING, &data->flags))
1977                 wake_up_bit(&data->flags, BTUSB_BOOTING);
1978 }
1979
1980 static void btusb_intel_secure_send_result(struct btusb_data *data,
1981                                            const void *ptr, unsigned int len)
1982 {
1983         const struct intel_secure_send_result *evt = ptr;
1984
1985         if (len != sizeof(*evt))
1986                 return;
1987
1988         if (evt->result)
1989                 set_bit(BTUSB_FIRMWARE_FAILED, &data->flags);
1990
1991         if (test_and_clear_bit(BTUSB_DOWNLOADING, &data->flags) &&
1992             test_bit(BTUSB_FIRMWARE_LOADED, &data->flags))
1993                 wake_up_bit(&data->flags, BTUSB_DOWNLOADING);
1994 }
1995
1996 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
1997 {
1998         struct btusb_data *data = hci_get_drvdata(hdev);
1999
2000         if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
2001                 struct hci_event_hdr *hdr = (void *)skb->data;
2002
2003                 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
2004                     hdr->plen > 0) {
2005                         const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
2006                         unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
2007
2008                         switch (skb->data[2]) {
2009                         case 0x02:
2010                                 /* When switching to the operational firmware
2011                                  * the device sends a vendor specific event
2012                                  * indicating that the bootup completed.
2013                                  */
2014                                 btusb_intel_bootup(data, ptr, len);
2015                                 break;
2016                         case 0x06:
2017                                 /* When the firmware loading completes the
2018                                  * device sends out a vendor specific event
2019                                  * indicating the result of the firmware
2020                                  * loading.
2021                                  */
2022                                 btusb_intel_secure_send_result(data, ptr, len);
2023                                 break;
2024                         }
2025                 }
2026         }
2027
2028         return hci_recv_frame(hdev, skb);
2029 }
2030
2031 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
2032 {
2033         struct btusb_data *data = hci_get_drvdata(hdev);
2034         struct urb *urb;
2035
2036         BT_DBG("%s", hdev->name);
2037
2038         switch (hci_skb_pkt_type(skb)) {
2039         case HCI_COMMAND_PKT:
2040                 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
2041                         struct hci_command_hdr *cmd = (void *)skb->data;
2042                         __u16 opcode = le16_to_cpu(cmd->opcode);
2043
2044                         /* When in bootloader mode and the command 0xfc09
2045                          * is received, it needs to be send down the
2046                          * bulk endpoint. So allocate a bulk URB instead.
2047                          */
2048                         if (opcode == 0xfc09)
2049                                 urb = alloc_bulk_urb(hdev, skb);
2050                         else
2051                                 urb = alloc_ctrl_urb(hdev, skb);
2052
2053                         /* When the 0xfc01 command is issued to boot into
2054                          * the operational firmware, it will actually not
2055                          * send a command complete event. To keep the flow
2056                          * control working inject that event here.
2057                          */
2058                         if (opcode == 0xfc01)
2059                                 inject_cmd_complete(hdev, opcode);
2060                 } else {
2061                         urb = alloc_ctrl_urb(hdev, skb);
2062                 }
2063                 if (IS_ERR(urb))
2064                         return PTR_ERR(urb);
2065
2066                 hdev->stat.cmd_tx++;
2067                 return submit_or_queue_tx_urb(hdev, urb);
2068
2069         case HCI_ACLDATA_PKT:
2070                 urb = alloc_bulk_urb(hdev, skb);
2071                 if (IS_ERR(urb))
2072                         return PTR_ERR(urb);
2073
2074                 hdev->stat.acl_tx++;
2075                 return submit_or_queue_tx_urb(hdev, urb);
2076
2077         case HCI_SCODATA_PKT:
2078                 if (hci_conn_num(hdev, SCO_LINK) < 1)
2079                         return -ENODEV;
2080
2081                 urb = alloc_isoc_urb(hdev, skb);
2082                 if (IS_ERR(urb))
2083                         return PTR_ERR(urb);
2084
2085                 hdev->stat.sco_tx++;
2086                 return submit_tx_urb(hdev, urb);
2087         }
2088
2089         return -EILSEQ;
2090 }
2091
2092 static bool btusb_setup_intel_new_get_fw_name(struct intel_version *ver,
2093                                              struct intel_boot_params *params,
2094                                              char *fw_name, size_t len,
2095                                              const char *suffix)
2096 {
2097         switch (ver->hw_variant) {
2098         case 0x0b:      /* SfP */
2099         case 0x0c:      /* WsP */
2100                 snprintf(fw_name, len, "intel/ibt-%u-%u.%s",
2101                         le16_to_cpu(ver->hw_variant),
2102                         le16_to_cpu(params->dev_revid),
2103                         suffix);
2104                 break;
2105         case 0x11:      /* JfP */
2106         case 0x12:      /* ThP */
2107         case 0x13:      /* HrP */
2108         case 0x14:      /* CcP */
2109                 snprintf(fw_name, len, "intel/ibt-%u-%u-%u.%s",
2110                         le16_to_cpu(ver->hw_variant),
2111                         le16_to_cpu(ver->hw_revision),
2112                         le16_to_cpu(ver->fw_revision),
2113                         suffix);
2114                 break;
2115         default:
2116                 return false;
2117         }
2118         return true;
2119 }
2120
2121 static int btusb_setup_intel_new(struct hci_dev *hdev)
2122 {
2123         struct btusb_data *data = hci_get_drvdata(hdev);
2124         struct intel_version ver;
2125         struct intel_boot_params params;
2126         const struct firmware *fw;
2127         u32 boot_param;
2128         char fwname[64];
2129         ktime_t calltime, delta, rettime;
2130         unsigned long long duration;
2131         int err;
2132
2133         BT_DBG("%s", hdev->name);
2134
2135         /* Set the default boot parameter to 0x0 and it is updated to
2136          * SKU specific boot parameter after reading Intel_Write_Boot_Params
2137          * command while downloading the firmware.
2138          */
2139         boot_param = 0x00000000;
2140
2141         calltime = ktime_get();
2142
2143         /* Read the Intel version information to determine if the device
2144          * is in bootloader mode or if it already has operational firmware
2145          * loaded.
2146          */
2147         err = btintel_read_version(hdev, &ver);
2148         if (err)
2149                 return err;
2150
2151         /* The hardware platform number has a fixed value of 0x37 and
2152          * for now only accept this single value.
2153          */
2154         if (ver.hw_platform != 0x37) {
2155                 bt_dev_err(hdev, "Unsupported Intel hardware platform (%u)",
2156                            ver.hw_platform);
2157                 return -EINVAL;
2158         }
2159
2160         /* Check for supported iBT hardware variants of this firmware
2161          * loading method.
2162          *
2163          * This check has been put in place to ensure correct forward
2164          * compatibility options when newer hardware variants come along.
2165          */
2166         switch (ver.hw_variant) {
2167         case 0x0b:      /* SfP */
2168         case 0x0c:      /* WsP */
2169         case 0x11:      /* JfP */
2170         case 0x12:      /* ThP */
2171         case 0x13:      /* HrP */
2172         case 0x14:      /* CcP */
2173                 break;
2174         default:
2175                 bt_dev_err(hdev, "Unsupported Intel hardware variant (%u)",
2176                            ver.hw_variant);
2177                 return -EINVAL;
2178         }
2179
2180         btintel_version_info(hdev, &ver);
2181
2182         /* The firmware variant determines if the device is in bootloader
2183          * mode or is running operational firmware. The value 0x06 identifies
2184          * the bootloader and the value 0x23 identifies the operational
2185          * firmware.
2186          *
2187          * When the operational firmware is already present, then only
2188          * the check for valid Bluetooth device address is needed. This
2189          * determines if the device will be added as configured or
2190          * unconfigured controller.
2191          *
2192          * It is not possible to use the Secure Boot Parameters in this
2193          * case since that command is only available in bootloader mode.
2194          */
2195         if (ver.fw_variant == 0x23) {
2196                 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2197                 btintel_check_bdaddr(hdev);
2198                 return 0;
2199         }
2200
2201         /* If the device is not in bootloader mode, then the only possible
2202          * choice is to return an error and abort the device initialization.
2203          */
2204         if (ver.fw_variant != 0x06) {
2205                 bt_dev_err(hdev, "Unsupported Intel firmware variant (%u)",
2206                            ver.fw_variant);
2207                 return -ENODEV;
2208         }
2209
2210         /* Read the secure boot parameters to identify the operating
2211          * details of the bootloader.
2212          */
2213         err = btintel_read_boot_params(hdev, &params);
2214         if (err)
2215                 return err;
2216
2217         /* It is required that every single firmware fragment is acknowledged
2218          * with a command complete event. If the boot parameters indicate
2219          * that this bootloader does not send them, then abort the setup.
2220          */
2221         if (params.limited_cce != 0x00) {
2222                 bt_dev_err(hdev, "Unsupported Intel firmware loading method (%u)",
2223                            params.limited_cce);
2224                 return -EINVAL;
2225         }
2226
2227         /* If the OTP has no valid Bluetooth device address, then there will
2228          * also be no valid address for the operational firmware.
2229          */
2230         if (!bacmp(&params.otp_bdaddr, BDADDR_ANY)) {
2231                 bt_dev_info(hdev, "No device address configured");
2232                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2233         }
2234
2235         /* With this Intel bootloader only the hardware variant and device
2236          * revision information are used to select the right firmware for SfP
2237          * and WsP.
2238          *
2239          * The firmware filename is ibt-<hw_variant>-<dev_revid>.sfi.
2240          *
2241          * Currently the supported hardware variants are:
2242          *   11 (0x0b) for iBT3.0 (LnP/SfP)
2243          *   12 (0x0c) for iBT3.5 (WsP)
2244          *
2245          * For ThP/JfP and for future SKU's, the FW name varies based on HW
2246          * variant, HW revision and FW revision, as these are dependent on CNVi
2247          * and RF Combination.
2248          *
2249          *   17 (0x11) for iBT3.5 (JfP)
2250          *   18 (0x12) for iBT3.5 (ThP)
2251          *
2252          * The firmware file name for these will be
2253          * ibt-<hw_variant>-<hw_revision>-<fw_revision>.sfi.
2254          *
2255          */
2256         err = btusb_setup_intel_new_get_fw_name(&ver, &params, fwname,
2257                                                 sizeof(fwname), "sfi");
2258         if (!err) {
2259                 bt_dev_err(hdev, "Unsupported Intel firmware naming");
2260                 return -EINVAL;
2261         }
2262
2263         err = request_firmware(&fw, fwname, &hdev->dev);
2264         if (err < 0) {
2265                 bt_dev_err(hdev, "Failed to load Intel firmware file (%d)", err);
2266                 return err;
2267         }
2268
2269         bt_dev_info(hdev, "Found device firmware: %s", fwname);
2270
2271         /* Save the DDC file name for later use to apply once the firmware
2272          * downloading is done.
2273          */
2274         err = btusb_setup_intel_new_get_fw_name(&ver, &params, fwname,
2275                                                 sizeof(fwname), "ddc");
2276         if (!err) {
2277                 bt_dev_err(hdev, "Unsupported Intel firmware naming");
2278                 return -EINVAL;
2279         }
2280
2281         if (fw->size < 644) {
2282                 bt_dev_err(hdev, "Invalid size of firmware file (%zu)",
2283                            fw->size);
2284                 err = -EBADF;
2285                 goto done;
2286         }
2287
2288         set_bit(BTUSB_DOWNLOADING, &data->flags);
2289
2290         /* Start firmware downloading and get boot parameter */
2291         err = btintel_download_firmware(hdev, fw, &boot_param);
2292         if (err < 0)
2293                 goto done;
2294
2295         set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2296
2297         bt_dev_info(hdev, "Waiting for firmware download to complete");
2298
2299         /* Before switching the device into operational mode and with that
2300          * booting the loaded firmware, wait for the bootloader notification
2301          * that all fragments have been successfully received.
2302          *
2303          * When the event processing receives the notification, then the
2304          * BTUSB_DOWNLOADING flag will be cleared.
2305          *
2306          * The firmware loading should not take longer than 5 seconds
2307          * and thus just timeout if that happens and fail the setup
2308          * of this device.
2309          */
2310         err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
2311                                   TASK_INTERRUPTIBLE,
2312                                   msecs_to_jiffies(5000));
2313         if (err == -EINTR) {
2314                 bt_dev_err(hdev, "Firmware loading interrupted");
2315                 goto done;
2316         }
2317
2318         if (err) {
2319                 bt_dev_err(hdev, "Firmware loading timeout");
2320                 err = -ETIMEDOUT;
2321                 goto done;
2322         }
2323
2324         if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) {
2325                 bt_dev_err(hdev, "Firmware loading failed");
2326                 err = -ENOEXEC;
2327                 goto done;
2328         }
2329
2330         rettime = ktime_get();
2331         delta = ktime_sub(rettime, calltime);
2332         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2333
2334         bt_dev_info(hdev, "Firmware loaded in %llu usecs", duration);
2335
2336 done:
2337         release_firmware(fw);
2338
2339         if (err < 0)
2340                 return err;
2341
2342         calltime = ktime_get();
2343
2344         set_bit(BTUSB_BOOTING, &data->flags);
2345
2346         err = btintel_send_intel_reset(hdev, boot_param);
2347         if (err)
2348                 return err;
2349
2350         /* The bootloader will not indicate when the device is ready. This
2351          * is done by the operational firmware sending bootup notification.
2352          *
2353          * Booting into operational firmware should not take longer than
2354          * 1 second. However if that happens, then just fail the setup
2355          * since something went wrong.
2356          */
2357         bt_dev_info(hdev, "Waiting for device to boot");
2358
2359         err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING,
2360                                   TASK_INTERRUPTIBLE,
2361                                   msecs_to_jiffies(1000));
2362
2363         if (err == -EINTR) {
2364                 bt_dev_err(hdev, "Device boot interrupted");
2365                 return -EINTR;
2366         }
2367
2368         if (err) {
2369                 bt_dev_err(hdev, "Device boot timeout");
2370                 return -ETIMEDOUT;
2371         }
2372
2373         rettime = ktime_get();
2374         delta = ktime_sub(rettime, calltime);
2375         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2376
2377         bt_dev_info(hdev, "Device booted in %llu usecs", duration);
2378
2379         clear_bit(BTUSB_BOOTLOADER, &data->flags);
2380
2381         /* Once the device is running in operational mode, it needs to apply
2382          * the device configuration (DDC) parameters.
2383          *
2384          * The device can work without DDC parameters, so even if it fails
2385          * to load the file, no need to fail the setup.
2386          */
2387         btintel_load_ddc_config(hdev, fwname);
2388
2389         /* Set the event mask for Intel specific vendor events. This enables
2390          * a few extra events that are useful during general operation. It
2391          * does not enable any debugging related events.
2392          *
2393          * The device will function correctly without these events enabled
2394          * and thus no need to fail the setup.
2395          */
2396         btintel_set_event_mask(hdev, false);
2397
2398         return 0;
2399 }
2400
2401 static int btusb_shutdown_intel(struct hci_dev *hdev)
2402 {
2403         struct sk_buff *skb;
2404         long ret;
2405
2406         /* In the shutdown sequence where Bluetooth is turned off followed
2407          * by WiFi being turned off, turning WiFi back on causes issue with
2408          * the RF calibration.
2409          *
2410          * To ensure that any RF activity has been stopped, issue HCI Reset
2411          * command to clear all ongoing activity including advertising,
2412          * scanning etc.
2413          */
2414         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2415         if (IS_ERR(skb)) {
2416                 ret = PTR_ERR(skb);
2417                 bt_dev_err(hdev, "HCI reset during shutdown failed");
2418                 return ret;
2419         }
2420         kfree_skb(skb);
2421
2422         /* Some platforms have an issue with BT LED when the interface is
2423          * down or BT radio is turned off, which takes 5 seconds to BT LED
2424          * goes off. This command turns off the BT LED immediately.
2425          */
2426         skb = __hci_cmd_sync(hdev, 0xfc3f, 0, NULL, HCI_INIT_TIMEOUT);
2427         if (IS_ERR(skb)) {
2428                 ret = PTR_ERR(skb);
2429                 bt_dev_err(hdev, "turning off Intel device LED failed");
2430                 return ret;
2431         }
2432         kfree_skb(skb);
2433
2434         return 0;
2435 }
2436
2437 static int btusb_shutdown_intel_new(struct hci_dev *hdev)
2438 {
2439         struct sk_buff *skb;
2440
2441         /* Send HCI Reset to the controller to stop any BT activity which
2442          * were triggered. This will help to save power and maintain the
2443          * sync b/w Host and controller
2444          */
2445         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2446         if (IS_ERR(skb)) {
2447                 bt_dev_err(hdev, "HCI reset during shutdown failed");
2448                 return PTR_ERR(skb);
2449         }
2450         kfree_skb(skb);
2451
2452         return 0;
2453 }
2454
2455 #ifdef CONFIG_PM
2456 /* Configure an out-of-band gpio as wake-up pin, if specified in device tree */
2457 static int marvell_config_oob_wake(struct hci_dev *hdev)
2458 {
2459         struct sk_buff *skb;
2460         struct btusb_data *data = hci_get_drvdata(hdev);
2461         struct device *dev = &data->udev->dev;
2462         u16 pin, gap, opcode;
2463         int ret;
2464         u8 cmd[5];
2465
2466         /* Move on if no wakeup pin specified */
2467         if (of_property_read_u16(dev->of_node, "marvell,wakeup-pin", &pin) ||
2468             of_property_read_u16(dev->of_node, "marvell,wakeup-gap-ms", &gap))
2469                 return 0;
2470
2471         /* Vendor specific command to configure a GPIO as wake-up pin */
2472         opcode = hci_opcode_pack(0x3F, 0x59);
2473         cmd[0] = opcode & 0xFF;
2474         cmd[1] = opcode >> 8;
2475         cmd[2] = 2; /* length of parameters that follow */
2476         cmd[3] = pin;
2477         cmd[4] = gap; /* time in ms, for which wakeup pin should be asserted */
2478
2479         skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
2480         if (!skb) {
2481                 bt_dev_err(hdev, "%s: No memory\n", __func__);
2482                 return -ENOMEM;
2483         }
2484
2485         skb_put_data(skb, cmd, sizeof(cmd));
2486         hci_skb_pkt_type(skb) = HCI_COMMAND_PKT;
2487
2488         ret = btusb_send_frame(hdev, skb);
2489         if (ret) {
2490                 bt_dev_err(hdev, "%s: configuration failed\n", __func__);
2491                 kfree_skb(skb);
2492                 return ret;
2493         }
2494
2495         return 0;
2496 }
2497 #endif
2498
2499 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
2500                                     const bdaddr_t *bdaddr)
2501 {
2502         struct sk_buff *skb;
2503         u8 buf[8];
2504         long ret;
2505
2506         buf[0] = 0xfe;
2507         buf[1] = sizeof(bdaddr_t);
2508         memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
2509
2510         skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2511         if (IS_ERR(skb)) {
2512                 ret = PTR_ERR(skb);
2513                 bt_dev_err(hdev, "changing Marvell device address failed (%ld)",
2514                            ret);
2515                 return ret;
2516         }
2517         kfree_skb(skb);
2518
2519         return 0;
2520 }
2521
2522 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
2523                                     const bdaddr_t *bdaddr)
2524 {
2525         struct sk_buff *skb;
2526         u8 buf[10];
2527         long ret;
2528
2529         buf[0] = 0x01;
2530         buf[1] = 0x01;
2531         buf[2] = 0x00;
2532         buf[3] = sizeof(bdaddr_t);
2533         memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
2534
2535         skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2536         if (IS_ERR(skb)) {
2537                 ret = PTR_ERR(skb);
2538                 bt_dev_err(hdev, "Change address command failed (%ld)", ret);
2539                 return ret;
2540         }
2541         kfree_skb(skb);
2542
2543         return 0;
2544 }
2545
2546 #define QCA_DFU_PACKET_LEN      4096
2547
2548 #define QCA_GET_TARGET_VERSION  0x09
2549 #define QCA_CHECK_STATUS        0x05
2550 #define QCA_DFU_DOWNLOAD        0x01
2551
2552 #define QCA_SYSCFG_UPDATED      0x40
2553 #define QCA_PATCH_UPDATED       0x80
2554 #define QCA_DFU_TIMEOUT         3000
2555
2556 struct qca_version {
2557         __le32  rom_version;
2558         __le32  patch_version;
2559         __le32  ram_version;
2560         __le32  ref_clock;
2561         __u8    reserved[4];
2562 } __packed;
2563
2564 struct qca_rampatch_version {
2565         __le16  rom_version;
2566         __le16  patch_version;
2567 } __packed;
2568
2569 struct qca_device_info {
2570         u32     rom_version;
2571         u8      rampatch_hdr;   /* length of header in rampatch */
2572         u8      nvm_hdr;        /* length of header in NVM */
2573         u8      ver_offset;     /* offset of version structure in rampatch */
2574 };
2575
2576 static const struct qca_device_info qca_devices_table[] = {
2577         { 0x00000100, 20, 4, 10 }, /* Rome 1.0 */
2578         { 0x00000101, 20, 4, 10 }, /* Rome 1.1 */
2579         { 0x00000200, 28, 4, 18 }, /* Rome 2.0 */
2580         { 0x00000201, 28, 4, 18 }, /* Rome 2.1 */
2581         { 0x00000300, 28, 4, 18 }, /* Rome 3.0 */
2582         { 0x00000302, 28, 4, 18 }, /* Rome 3.2 */
2583 };
2584
2585 static int btusb_qca_send_vendor_req(struct usb_device *udev, u8 request,
2586                                      void *data, u16 size)
2587 {
2588         int pipe, err;
2589         u8 *buf;
2590
2591         buf = kmalloc(size, GFP_KERNEL);
2592         if (!buf)
2593                 return -ENOMEM;
2594
2595         /* Found some of USB hosts have IOT issues with ours so that we should
2596          * not wait until HCI layer is ready.
2597          */
2598         pipe = usb_rcvctrlpipe(udev, 0);
2599         err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
2600                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2601         if (err < 0) {
2602                 dev_err(&udev->dev, "Failed to access otp area (%d)", err);
2603                 goto done;
2604         }
2605
2606         memcpy(data, buf, size);
2607
2608 done:
2609         kfree(buf);
2610
2611         return err;
2612 }
2613
2614 static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
2615                                        const struct firmware *firmware,
2616                                        size_t hdr_size)
2617 {
2618         struct btusb_data *btdata = hci_get_drvdata(hdev);
2619         struct usb_device *udev = btdata->udev;
2620         size_t count, size, sent = 0;
2621         int pipe, len, err;
2622         u8 *buf;
2623
2624         buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
2625         if (!buf)
2626                 return -ENOMEM;
2627
2628         count = firmware->size;
2629
2630         size = min_t(size_t, count, hdr_size);
2631         memcpy(buf, firmware->data, size);
2632
2633         /* USB patches should go down to controller through USB path
2634          * because binary format fits to go down through USB channel.
2635          * USB control path is for patching headers and USB bulk is for
2636          * patch body.
2637          */
2638         pipe = usb_sndctrlpipe(udev, 0);
2639         err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
2640                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2641         if (err < 0) {
2642                 bt_dev_err(hdev, "Failed to send headers (%d)", err);
2643                 goto done;
2644         }
2645
2646         sent += size;
2647         count -= size;
2648
2649         while (count) {
2650                 size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
2651
2652                 memcpy(buf, firmware->data + sent, size);
2653
2654                 pipe = usb_sndbulkpipe(udev, 0x02);
2655                 err = usb_bulk_msg(udev, pipe, buf, size, &len,
2656                                    QCA_DFU_TIMEOUT);
2657                 if (err < 0) {
2658                         bt_dev_err(hdev, "Failed to send body at %zd of %zd (%d)",
2659                                    sent, firmware->size, err);
2660                         break;
2661                 }
2662
2663                 if (size != len) {
2664                         bt_dev_err(hdev, "Failed to get bulk buffer");
2665                         err = -EILSEQ;
2666                         break;
2667                 }
2668
2669                 sent  += size;
2670                 count -= size;
2671         }
2672
2673 done:
2674         kfree(buf);
2675         return err;
2676 }
2677
2678 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
2679                                          struct qca_version *ver,
2680                                          const struct qca_device_info *info)
2681 {
2682         struct qca_rampatch_version *rver;
2683         const struct firmware *fw;
2684         u32 ver_rom, ver_patch;
2685         u16 rver_rom, rver_patch;
2686         char fwname[64];
2687         int err;
2688
2689         ver_rom = le32_to_cpu(ver->rom_version);
2690         ver_patch = le32_to_cpu(ver->patch_version);
2691
2692         snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom);
2693
2694         err = request_firmware(&fw, fwname, &hdev->dev);
2695         if (err) {
2696                 bt_dev_err(hdev, "failed to request rampatch file: %s (%d)",
2697                            fwname, err);
2698                 return err;
2699         }
2700
2701         bt_dev_info(hdev, "using rampatch file: %s", fwname);
2702
2703         rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
2704         rver_rom = le16_to_cpu(rver->rom_version);
2705         rver_patch = le16_to_cpu(rver->patch_version);
2706
2707         bt_dev_info(hdev, "QCA: patch rome 0x%x build 0x%x, "
2708                     "firmware rome 0x%x build 0x%x",
2709                     rver_rom, rver_patch, ver_rom, ver_patch);
2710
2711         if (rver_rom != ver_rom || rver_patch <= ver_patch) {
2712                 bt_dev_err(hdev, "rampatch file version did not match with firmware");
2713                 err = -EINVAL;
2714                 goto done;
2715         }
2716
2717         err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
2718
2719 done:
2720         release_firmware(fw);
2721
2722         return err;
2723 }
2724
2725 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
2726                                     struct qca_version *ver,
2727                                     const struct qca_device_info *info)
2728 {
2729         const struct firmware *fw;
2730         char fwname[64];
2731         int err;
2732
2733         snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x.bin",
2734                  le32_to_cpu(ver->rom_version));
2735
2736         err = request_firmware(&fw, fwname, &hdev->dev);
2737         if (err) {
2738                 bt_dev_err(hdev, "failed to request NVM file: %s (%d)",
2739                            fwname, err);
2740                 return err;
2741         }
2742
2743         bt_dev_info(hdev, "using NVM file: %s", fwname);
2744
2745         err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
2746
2747         release_firmware(fw);
2748
2749         return err;
2750 }
2751
2752 /* identify the ROM version and check whether patches are needed */
2753 static bool btusb_qca_need_patch(struct usb_device *udev)
2754 {
2755         struct qca_version ver;
2756
2757         if (btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
2758                                       sizeof(ver)) < 0)
2759                 return false;
2760         /* only low ROM versions need patches */
2761         return !(le32_to_cpu(ver.rom_version) & ~0xffffU);
2762 }
2763
2764 static int btusb_setup_qca(struct hci_dev *hdev)
2765 {
2766         struct btusb_data *btdata = hci_get_drvdata(hdev);
2767         struct usb_device *udev = btdata->udev;
2768         const struct qca_device_info *info = NULL;
2769         struct qca_version ver;
2770         u32 ver_rom;
2771         u8 status;
2772         int i, err;
2773
2774         err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
2775                                         sizeof(ver));
2776         if (err < 0)
2777                 return err;
2778
2779         ver_rom = le32_to_cpu(ver.rom_version);
2780         /* Don't care about high ROM versions */
2781         if (ver_rom & ~0xffffU)
2782                 return 0;
2783
2784         for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
2785                 if (ver_rom == qca_devices_table[i].rom_version)
2786                         info = &qca_devices_table[i];
2787         }
2788         if (!info) {
2789                 bt_dev_err(hdev, "don't support firmware rome 0x%x", ver_rom);
2790                 return -ENODEV;
2791         }
2792
2793         err = btusb_qca_send_vendor_req(udev, QCA_CHECK_STATUS, &status,
2794                                         sizeof(status));
2795         if (err < 0)
2796                 return err;
2797
2798         if (!(status & QCA_PATCH_UPDATED)) {
2799                 err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
2800                 if (err < 0)
2801                         return err;
2802         }
2803
2804         if (!(status & QCA_SYSCFG_UPDATED)) {
2805                 err = btusb_setup_qca_load_nvm(hdev, &ver, info);
2806                 if (err < 0)
2807                         return err;
2808         }
2809
2810         return 0;
2811 }
2812
2813 #ifdef CONFIG_BT_HCIBTUSB_BCM
2814 static inline int __set_diag_interface(struct hci_dev *hdev)
2815 {
2816         struct btusb_data *data = hci_get_drvdata(hdev);
2817         struct usb_interface *intf = data->diag;
2818         int i;
2819
2820         if (!data->diag)
2821                 return -ENODEV;
2822
2823         data->diag_tx_ep = NULL;
2824         data->diag_rx_ep = NULL;
2825
2826         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2827                 struct usb_endpoint_descriptor *ep_desc;
2828
2829                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2830
2831                 if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
2832                         data->diag_tx_ep = ep_desc;
2833                         continue;
2834                 }
2835
2836                 if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
2837                         data->diag_rx_ep = ep_desc;
2838                         continue;
2839                 }
2840         }
2841
2842         if (!data->diag_tx_ep || !data->diag_rx_ep) {
2843                 bt_dev_err(hdev, "invalid diagnostic descriptors");
2844                 return -ENODEV;
2845         }
2846
2847         return 0;
2848 }
2849
2850 static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable)
2851 {
2852         struct btusb_data *data = hci_get_drvdata(hdev);
2853         struct sk_buff *skb;
2854         struct urb *urb;
2855         unsigned int pipe;
2856
2857         if (!data->diag_tx_ep)
2858                 return ERR_PTR(-ENODEV);
2859
2860         urb = usb_alloc_urb(0, GFP_KERNEL);
2861         if (!urb)
2862                 return ERR_PTR(-ENOMEM);
2863
2864         skb = bt_skb_alloc(2, GFP_KERNEL);
2865         if (!skb) {
2866                 usb_free_urb(urb);
2867                 return ERR_PTR(-ENOMEM);
2868         }
2869
2870         skb_put_u8(skb, 0xf0);
2871         skb_put_u8(skb, enable);
2872
2873         pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress);
2874
2875         usb_fill_bulk_urb(urb, data->udev, pipe,
2876                           skb->data, skb->len, btusb_tx_complete, skb);
2877
2878         skb->dev = (void *)hdev;
2879
2880         return urb;
2881 }
2882
2883 static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable)
2884 {
2885         struct btusb_data *data = hci_get_drvdata(hdev);
2886         struct urb *urb;
2887
2888         if (!data->diag)
2889                 return -ENODEV;
2890
2891         if (!test_bit(HCI_RUNNING, &hdev->flags))
2892                 return -ENETDOWN;
2893
2894         urb = alloc_diag_urb(hdev, enable);
2895         if (IS_ERR(urb))
2896                 return PTR_ERR(urb);
2897
2898         return submit_or_queue_tx_urb(hdev, urb);
2899 }
2900 #endif
2901
2902 #ifdef CONFIG_PM
2903 static irqreturn_t btusb_oob_wake_handler(int irq, void *priv)
2904 {
2905         struct btusb_data *data = priv;
2906
2907         pm_wakeup_event(&data->udev->dev, 0);
2908         pm_system_wakeup();
2909
2910         /* Disable only if not already disabled (keep it balanced) */
2911         if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
2912                 disable_irq_nosync(irq);
2913                 disable_irq_wake(irq);
2914         }
2915         return IRQ_HANDLED;
2916 }
2917
2918 static const struct of_device_id btusb_match_table[] = {
2919         { .compatible = "usb1286,204e" },
2920         { .compatible = "usbcf3,e300" }, /* QCA6174A */
2921         { .compatible = "usb4ca,301a" }, /* QCA6174A (Lite-On) */
2922         { }
2923 };
2924 MODULE_DEVICE_TABLE(of, btusb_match_table);
2925
2926 /* Use an oob wakeup pin? */
2927 static int btusb_config_oob_wake(struct hci_dev *hdev)
2928 {
2929         struct btusb_data *data = hci_get_drvdata(hdev);
2930         struct device *dev = &data->udev->dev;
2931         int irq, ret;
2932
2933         clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
2934
2935         if (!of_match_device(btusb_match_table, dev))
2936                 return 0;
2937
2938         /* Move on if no IRQ specified */
2939         irq = of_irq_get_byname(dev->of_node, "wakeup");
2940         if (irq <= 0) {
2941                 bt_dev_dbg(hdev, "%s: no OOB Wakeup IRQ in DT", __func__);
2942                 return 0;
2943         }
2944
2945         irq_set_status_flags(irq, IRQ_NOAUTOEN);
2946         ret = devm_request_irq(&hdev->dev, irq, btusb_oob_wake_handler,
2947                                0, "OOB Wake-on-BT", data);
2948         if (ret) {
2949                 bt_dev_err(hdev, "%s: IRQ request failed", __func__);
2950                 return ret;
2951         }
2952
2953         ret = device_init_wakeup(dev, true);
2954         if (ret) {
2955                 bt_dev_err(hdev, "%s: failed to init_wakeup", __func__);
2956                 return ret;
2957         }
2958
2959         data->oob_wake_irq = irq;
2960         bt_dev_info(hdev, "OOB Wake-on-BT configured at IRQ %u", irq);
2961         return 0;
2962 }
2963 #endif
2964
2965 static void btusb_check_needs_reset_resume(struct usb_interface *intf)
2966 {
2967         if (dmi_check_system(btusb_needs_reset_resume_table))
2968                 interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME;
2969 }
2970
2971 static int btusb_probe(struct usb_interface *intf,
2972                        const struct usb_device_id *id)
2973 {
2974         struct usb_endpoint_descriptor *ep_desc;
2975         struct gpio_desc *reset_gpio;
2976         struct btusb_data *data;
2977         struct hci_dev *hdev;
2978         unsigned ifnum_base;
2979         int i, err;
2980
2981         BT_DBG("intf %p id %p", intf, id);
2982
2983         /* interface numbers are hardcoded in the spec */
2984         if (intf->cur_altsetting->desc.bInterfaceNumber != 0) {
2985                 if (!(id->driver_info & BTUSB_IFNUM_2))
2986                         return -ENODEV;
2987                 if (intf->cur_altsetting->desc.bInterfaceNumber != 2)
2988                         return -ENODEV;
2989         }
2990
2991         ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber;
2992
2993         if (!id->driver_info) {
2994                 const struct usb_device_id *match;
2995
2996                 match = usb_match_id(intf, blacklist_table);
2997                 if (match)
2998                         id = match;
2999         }
3000
3001         if (id->driver_info == BTUSB_IGNORE)
3002                 return -ENODEV;
3003
3004         if (id->driver_info & BTUSB_ATH3012) {
3005                 struct usb_device *udev = interface_to_usbdev(intf);
3006
3007                 /* Old firmware would otherwise let ath3k driver load
3008                  * patch and sysconfig files
3009                  */
3010                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001 &&
3011                     !btusb_qca_need_patch(udev))
3012                         return -ENODEV;
3013         }
3014
3015         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
3016         if (!data)
3017                 return -ENOMEM;
3018
3019         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
3020                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
3021
3022                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
3023                         data->intr_ep = ep_desc;
3024                         continue;
3025                 }
3026
3027                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
3028                         data->bulk_tx_ep = ep_desc;
3029                         continue;
3030                 }
3031
3032                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
3033                         data->bulk_rx_ep = ep_desc;
3034                         continue;
3035                 }
3036         }
3037
3038         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
3039                 return -ENODEV;
3040
3041         if (id->driver_info & BTUSB_AMP) {
3042                 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
3043                 data->cmdreq = 0x2b;
3044         } else {
3045                 data->cmdreq_type = USB_TYPE_CLASS;
3046                 data->cmdreq = 0x00;
3047         }
3048
3049         data->udev = interface_to_usbdev(intf);
3050         data->intf = intf;
3051
3052         INIT_WORK(&data->work, btusb_work);
3053         INIT_WORK(&data->waker, btusb_waker);
3054         init_usb_anchor(&data->deferred);
3055         init_usb_anchor(&data->tx_anchor);
3056         spin_lock_init(&data->txlock);
3057
3058         init_usb_anchor(&data->intr_anchor);
3059         init_usb_anchor(&data->bulk_anchor);
3060         init_usb_anchor(&data->isoc_anchor);
3061         init_usb_anchor(&data->diag_anchor);
3062         spin_lock_init(&data->rxlock);
3063
3064         if (id->driver_info & BTUSB_INTEL_NEW) {
3065                 data->recv_event = btusb_recv_event_intel;
3066                 data->recv_bulk = btusb_recv_bulk_intel;
3067                 set_bit(BTUSB_BOOTLOADER, &data->flags);
3068         } else {
3069                 data->recv_event = hci_recv_frame;
3070                 data->recv_bulk = btusb_recv_bulk;
3071         }
3072
3073         hdev = hci_alloc_dev();
3074         if (!hdev)
3075                 return -ENOMEM;
3076
3077         hdev->bus = HCI_USB;
3078         hci_set_drvdata(hdev, data);
3079
3080         if (id->driver_info & BTUSB_AMP)
3081                 hdev->dev_type = HCI_AMP;
3082         else
3083                 hdev->dev_type = HCI_PRIMARY;
3084
3085         data->hdev = hdev;
3086
3087         SET_HCIDEV_DEV(hdev, &intf->dev);
3088
3089         reset_gpio = gpiod_get_optional(&data->udev->dev, "reset",
3090                                         GPIOD_OUT_LOW);
3091         if (IS_ERR(reset_gpio)) {
3092                 err = PTR_ERR(reset_gpio);
3093                 goto out_free_dev;
3094         } else if (reset_gpio) {
3095                 data->reset_gpio = reset_gpio;
3096         }
3097
3098         hdev->open   = btusb_open;
3099         hdev->close  = btusb_close;
3100         hdev->flush  = btusb_flush;
3101         hdev->send   = btusb_send_frame;
3102         hdev->notify = btusb_notify;
3103
3104 #ifdef CONFIG_PM
3105         err = btusb_config_oob_wake(hdev);
3106         if (err)
3107                 goto out_free_dev;
3108
3109         /* Marvell devices may need a specific chip configuration */
3110         if (id->driver_info & BTUSB_MARVELL && data->oob_wake_irq) {
3111                 err = marvell_config_oob_wake(hdev);
3112                 if (err)
3113                         goto out_free_dev;
3114         }
3115 #endif
3116         if (id->driver_info & BTUSB_CW6622)
3117                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
3118
3119         if (id->driver_info & BTUSB_BCM2045)
3120                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
3121
3122         if (id->driver_info & BTUSB_BCM92035)
3123                 hdev->setup = btusb_setup_bcm92035;
3124
3125 #ifdef CONFIG_BT_HCIBTUSB_BCM
3126         if (id->driver_info & BTUSB_BCM_PATCHRAM) {
3127                 hdev->manufacturer = 15;
3128                 hdev->setup = btbcm_setup_patchram;
3129                 hdev->set_diag = btusb_bcm_set_diag;
3130                 hdev->set_bdaddr = btbcm_set_bdaddr;
3131
3132                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
3133                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
3134         }
3135
3136         if (id->driver_info & BTUSB_BCM_APPLE) {
3137                 hdev->manufacturer = 15;
3138                 hdev->setup = btbcm_setup_apple;
3139                 hdev->set_diag = btusb_bcm_set_diag;
3140
3141                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
3142                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
3143         }
3144 #endif
3145
3146         if (id->driver_info & BTUSB_INTEL) {
3147                 hdev->manufacturer = 2;
3148                 hdev->setup = btusb_setup_intel;
3149                 hdev->shutdown = btusb_shutdown_intel;
3150                 hdev->set_diag = btintel_set_diag_mfg;
3151                 hdev->set_bdaddr = btintel_set_bdaddr;
3152                 hdev->cmd_timeout = btusb_intel_cmd_timeout;
3153                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3154                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3155                 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
3156         }
3157
3158         if (id->driver_info & BTUSB_INTEL_NEW) {
3159                 hdev->manufacturer = 2;
3160                 hdev->send = btusb_send_frame_intel;
3161                 hdev->setup = btusb_setup_intel_new;
3162                 hdev->shutdown = btusb_shutdown_intel_new;
3163                 hdev->hw_error = btintel_hw_error;
3164                 hdev->set_diag = btintel_set_diag;
3165                 hdev->set_bdaddr = btintel_set_bdaddr;
3166                 hdev->cmd_timeout = btusb_intel_cmd_timeout;
3167                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3168                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3169                 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
3170         }
3171
3172         if (id->driver_info & BTUSB_MARVELL)
3173                 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
3174
3175         if (id->driver_info & BTUSB_SWAVE) {
3176                 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
3177                 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
3178         }
3179
3180         if (id->driver_info & BTUSB_INTEL_BOOT) {
3181                 hdev->manufacturer = 2;
3182                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3183         }
3184
3185         if (id->driver_info & BTUSB_ATH3012) {
3186                 data->setup_on_usb = btusb_setup_qca;
3187                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
3188                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3189                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3190         }
3191
3192         if (id->driver_info & BTUSB_QCA_ROME) {
3193                 data->setup_on_usb = btusb_setup_qca;
3194                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
3195                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3196                 btusb_check_needs_reset_resume(intf);
3197         }
3198
3199 #ifdef CONFIG_BT_HCIBTUSB_RTL
3200         if (id->driver_info & BTUSB_REALTEK) {
3201                 hdev->setup = btrtl_setup_realtek;
3202
3203                 /* Realtek devices lose their updated firmware over suspend,
3204                  * but the USB hub doesn't notice any status change.
3205                  * Explicitly request a device reset on resume.
3206                  */
3207                 interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME;
3208         }
3209 #endif
3210
3211         if (id->driver_info & BTUSB_AMP) {
3212                 /* AMP controllers do not support SCO packets */
3213                 data->isoc = NULL;
3214         } else {
3215                 /* Interface orders are hardcoded in the specification */
3216                 data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1);
3217                 data->isoc_ifnum = ifnum_base + 1;
3218         }
3219
3220         if (!reset)
3221                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3222
3223         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
3224                 if (!disable_scofix)
3225                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
3226         }
3227
3228         if (id->driver_info & BTUSB_BROKEN_ISOC)
3229                 data->isoc = NULL;
3230
3231         if (id->driver_info & BTUSB_DIGIANSWER) {
3232                 data->cmdreq_type = USB_TYPE_VENDOR;
3233                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3234         }
3235
3236         if (id->driver_info & BTUSB_CSR) {
3237                 struct usb_device *udev = data->udev;
3238                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
3239
3240                 /* Old firmware would otherwise execute USB reset */
3241                 if (bcdDevice < 0x117)
3242                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3243
3244                 /* Fake CSR devices with broken commands */
3245                 if (bcdDevice <= 0x100 || bcdDevice == 0x134)
3246                         hdev->setup = btusb_setup_csr;
3247
3248                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3249         }
3250
3251         if (id->driver_info & BTUSB_SNIFFER) {
3252                 struct usb_device *udev = data->udev;
3253
3254                 /* New sniffer firmware has crippled HCI interface */
3255                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
3256                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3257         }
3258
3259         if (id->driver_info & BTUSB_INTEL_BOOT) {
3260                 /* A bug in the bootloader causes that interrupt interface is
3261                  * only enabled after receiving SetInterface(0, AltSetting=0).
3262                  */
3263                 err = usb_set_interface(data->udev, 0, 0);
3264                 if (err < 0) {
3265                         BT_ERR("failed to set interface 0, alt 0 %d", err);
3266                         goto out_free_dev;
3267                 }
3268         }
3269
3270         if (data->isoc) {
3271                 err = usb_driver_claim_interface(&btusb_driver,
3272                                                  data->isoc, data);
3273                 if (err < 0)
3274                         goto out_free_dev;
3275         }
3276
3277 #ifdef CONFIG_BT_HCIBTUSB_BCM
3278         if (data->diag) {
3279                 if (!usb_driver_claim_interface(&btusb_driver,
3280                                                 data->diag, data))
3281                         __set_diag_interface(hdev);
3282                 else
3283                         data->diag = NULL;
3284         }
3285 #endif
3286
3287         if (enable_autosuspend)
3288                 usb_enable_autosuspend(data->udev);
3289
3290         err = hci_register_dev(hdev);
3291         if (err < 0)
3292                 goto out_free_dev;
3293
3294         usb_set_intfdata(intf, data);
3295
3296         return 0;
3297
3298 out_free_dev:
3299         if (data->reset_gpio)
3300                 gpiod_put(data->reset_gpio);
3301         hci_free_dev(hdev);
3302         return err;
3303 }
3304
3305 static void btusb_disconnect(struct usb_interface *intf)
3306 {
3307         struct btusb_data *data = usb_get_intfdata(intf);
3308         struct hci_dev *hdev;
3309
3310         BT_DBG("intf %p", intf);
3311
3312         if (!data)
3313                 return;
3314
3315         hdev = data->hdev;
3316         usb_set_intfdata(data->intf, NULL);
3317
3318         if (data->isoc)
3319                 usb_set_intfdata(data->isoc, NULL);
3320
3321         if (data->diag)
3322                 usb_set_intfdata(data->diag, NULL);
3323
3324         hci_unregister_dev(hdev);
3325
3326         if (intf == data->intf) {
3327                 if (data->isoc)
3328                         usb_driver_release_interface(&btusb_driver, data->isoc);
3329                 if (data->diag)
3330                         usb_driver_release_interface(&btusb_driver, data->diag);
3331         } else if (intf == data->isoc) {
3332                 if (data->diag)
3333                         usb_driver_release_interface(&btusb_driver, data->diag);
3334                 usb_driver_release_interface(&btusb_driver, data->intf);
3335         } else if (intf == data->diag) {
3336                 usb_driver_release_interface(&btusb_driver, data->intf);
3337                 if (data->isoc)
3338                         usb_driver_release_interface(&btusb_driver, data->isoc);
3339         }
3340
3341         if (data->oob_wake_irq)
3342                 device_init_wakeup(&data->udev->dev, false);
3343
3344         if (data->reset_gpio)
3345                 gpiod_put(data->reset_gpio);
3346
3347         hci_free_dev(hdev);
3348 }
3349
3350 #ifdef CONFIG_PM
3351 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
3352 {
3353         struct btusb_data *data = usb_get_intfdata(intf);
3354
3355         BT_DBG("intf %p", intf);
3356
3357         if (data->suspend_count++)
3358                 return 0;
3359
3360         spin_lock_irq(&data->txlock);
3361         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
3362                 set_bit(BTUSB_SUSPENDING, &data->flags);
3363                 spin_unlock_irq(&data->txlock);
3364         } else {
3365                 spin_unlock_irq(&data->txlock);
3366                 data->suspend_count--;
3367                 return -EBUSY;
3368         }
3369
3370         cancel_work_sync(&data->work);
3371
3372         btusb_stop_traffic(data);
3373         usb_kill_anchored_urbs(&data->tx_anchor);
3374
3375         if (data->oob_wake_irq && device_may_wakeup(&data->udev->dev)) {
3376                 set_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
3377                 enable_irq_wake(data->oob_wake_irq);
3378                 enable_irq(data->oob_wake_irq);
3379         }
3380
3381         return 0;
3382 }
3383
3384 static void play_deferred(struct btusb_data *data)
3385 {
3386         struct urb *urb;
3387         int err;
3388
3389         while ((urb = usb_get_from_anchor(&data->deferred))) {
3390                 usb_anchor_urb(urb, &data->tx_anchor);
3391
3392                 err = usb_submit_urb(urb, GFP_ATOMIC);
3393                 if (err < 0) {
3394                         if (err != -EPERM && err != -ENODEV)
3395                                 BT_ERR("%s urb %p submission failed (%d)",
3396                                        data->hdev->name, urb, -err);
3397                         kfree(urb->setup_packet);
3398                         usb_unanchor_urb(urb);
3399                         usb_free_urb(urb);
3400                         break;
3401                 }
3402
3403                 data->tx_in_flight++;
3404                 usb_free_urb(urb);
3405         }
3406
3407         /* Cleanup the rest deferred urbs. */
3408         while ((urb = usb_get_from_anchor(&data->deferred))) {
3409                 kfree(urb->setup_packet);
3410                 usb_free_urb(urb);
3411         }
3412 }
3413
3414 static int btusb_resume(struct usb_interface *intf)
3415 {
3416         struct btusb_data *data = usb_get_intfdata(intf);
3417         struct hci_dev *hdev = data->hdev;
3418         int err = 0;
3419
3420         BT_DBG("intf %p", intf);
3421
3422         if (--data->suspend_count)
3423                 return 0;
3424
3425         /* Disable only if not already disabled (keep it balanced) */
3426         if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
3427                 disable_irq(data->oob_wake_irq);
3428                 disable_irq_wake(data->oob_wake_irq);
3429         }
3430
3431         if (!test_bit(HCI_RUNNING, &hdev->flags))
3432                 goto done;
3433
3434         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
3435                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
3436                 if (err < 0) {
3437                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
3438                         goto failed;
3439                 }
3440         }
3441
3442         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
3443                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
3444                 if (err < 0) {
3445                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
3446                         goto failed;
3447                 }
3448
3449                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
3450         }
3451
3452         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
3453                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
3454                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
3455                 else
3456                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
3457         }
3458
3459         spin_lock_irq(&data->txlock);
3460         play_deferred(data);
3461         clear_bit(BTUSB_SUSPENDING, &data->flags);
3462         spin_unlock_irq(&data->txlock);
3463         schedule_work(&data->work);
3464
3465         return 0;
3466
3467 failed:
3468         usb_scuttle_anchored_urbs(&data->deferred);
3469 done:
3470         spin_lock_irq(&data->txlock);
3471         clear_bit(BTUSB_SUSPENDING, &data->flags);
3472         spin_unlock_irq(&data->txlock);
3473
3474         return err;
3475 }
3476 #endif
3477
3478 static struct usb_driver btusb_driver = {
3479         .name           = "btusb",
3480         .probe          = btusb_probe,
3481         .disconnect     = btusb_disconnect,
3482 #ifdef CONFIG_PM
3483         .suspend        = btusb_suspend,
3484         .resume         = btusb_resume,
3485 #endif
3486         .id_table       = btusb_table,
3487         .supports_autosuspend = 1,
3488         .disable_hub_initiated_lpm = 1,
3489 };
3490
3491 module_usb_driver(btusb_driver);
3492
3493 module_param(disable_scofix, bool, 0644);
3494 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
3495
3496 module_param(force_scofix, bool, 0644);
3497 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
3498
3499 module_param(enable_autosuspend, bool, 0644);
3500 MODULE_PARM_DESC(enable_autosuspend, "Enable USB autosuspend by default");
3501
3502 module_param(reset, bool, 0644);
3503 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
3504
3505 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
3506 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
3507 MODULE_VERSION(VERSION);
3508 MODULE_LICENSE("GPL");