drivers/bluetooth/btusb.c

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