drivers/bluetooth/btusb.c

   1 /*
   2  *
   3  *  Generic Bluetooth USB driver
   4  *
   5  *  Copyright (C) 2005-2008  Marcel Holtmann <marcel@holtmann.org>
   6  *
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, write to the Free Software
  20  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  *
  22  */
  23
  24 #include <linux/module.h>
  25 #include <linux/usb.h>
  26 #include <linux/firmware.h>
  27 #include <linux/of_device.h>
  28 #include <linux/of_irq.h>
  29 #include <linux/suspend.h>
  30 #include <asm/unaligned.h>
  31
  32 #include <net/bluetooth/bluetooth.h>
  33 #include <net/bluetooth/hci_core.h>
  34
  35 #include "btintel.h"
  36 #include "btbcm.h"
  37 #include "btrtl.h"
  38
  39 #define VERSION "0.8"
  40
  41 static bool disable_scofix;
  42 static bool force_scofix;
  43
  44 static bool reset = true;
  45
  46 static struct usb_driver btusb_driver;
  47
  48 #define BTUSB_IGNORE            0x01
  49 #define BTUSB_DIGIANSWER        0x02
  50 #define BTUSB_CSR               0x04
  51 #define BTUSB_SNIFFER           0x08
  52 #define BTUSB_BCM92035          0x10
  53 #define BTUSB_BROKEN_ISOC       0x20
  54 #define BTUSB_WRONG_SCO_MTU     0x40
  55 #define BTUSB_ATH3012           0x80
  56 #define BTUSB_INTEL             0x100
  57 #define BTUSB_INTEL_BOOT        0x200
  58 #define BTUSB_BCM_PATCHRAM      0x400
  59 #define BTUSB_MARVELL           0x800
  60 #define BTUSB_SWAVE             0x1000
  61 #define BTUSB_INTEL_NEW         0x2000
  62 #define BTUSB_AMP               0x4000
  63 #define BTUSB_QCA_ROME          0x8000
  64 #define BTUSB_BCM_APPLE         0x10000
  65 #define BTUSB_REALTEK           0x20000
  66 #define BTUSB_BCM2045           0x40000
  67 #define BTUSB_IFNUM_2           0x80000
  68 #define BTUSB_CW6622            0x100000
  69
  70 static const struct usb_device_id btusb_table[] = {
  71         /* Generic Bluetooth USB device */
  72         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  73
  74         /* Generic Bluetooth AMP device */
  75         { USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP },
  76
  77         /* Generic Bluetooth USB interface */
  78         { USB_INTERFACE_INFO(0xe0, 0x01, 0x01) },
  79
  80         /* Apple-specific (Broadcom) devices */
  81         { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01),
  82           .driver_info = BTUSB_BCM_APPLE | BTUSB_IFNUM_2 },
  83
  84         /* MediaTek MT76x0E */
  85         { USB_DEVICE(0x0e8d, 0x763f) },
  86
  87         /* Broadcom SoftSailing reporting vendor specific */
  88         { USB_DEVICE(0x0a5c, 0x21e1) },
  89
  90         /* Apple MacBookPro 7,1 */
  91         { USB_DEVICE(0x05ac, 0x8213) },
  92
  93         /* Apple iMac11,1 */
  94         { USB_DEVICE(0x05ac, 0x8215) },
  95
  96         /* Apple MacBookPro6,2 */
  97         { USB_DEVICE(0x05ac, 0x8218) },
  98
  99         /* Apple MacBookAir3,1, MacBookAir3,2 */
 100         { USB_DEVICE(0x05ac, 0x821b) },
 101
 102         /* Apple MacBookAir4,1 */
 103         { USB_DEVICE(0x05ac, 0x821f) },
 104
 105         /* Apple MacBookPro8,2 */
 106         { USB_DEVICE(0x05ac, 0x821a) },
 107
 108         /* Apple MacMini5,1 */
 109         { USB_DEVICE(0x05ac, 0x8281) },
 110
 111         /* AVM BlueFRITZ! USB v2.0 */
 112         { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE },
 113
 114         /* Bluetooth Ultraport Module from IBM */
 115         { USB_DEVICE(0x04bf, 0x030a) },
 116
 117         /* ALPS Modules with non-standard id */
 118         { USB_DEVICE(0x044e, 0x3001) },
 119         { USB_DEVICE(0x044e, 0x3002) },
 120
 121         /* Ericsson with non-standard id */
 122         { USB_DEVICE(0x0bdb, 0x1002) },
 123
 124         /* Canyon CN-BTU1 with HID interfaces */
 125         { USB_DEVICE(0x0c10, 0x0000) },
 126
 127         /* Broadcom BCM20702A0 */
 128         { USB_DEVICE(0x413c, 0x8197) },
 129
 130         /* Broadcom BCM20702B0 (Dynex/Insignia) */
 131         { USB_DEVICE(0x19ff, 0x0239), .driver_info = BTUSB_BCM_PATCHRAM },
 132
 133         /* Broadcom BCM43142A0 (Foxconn/Lenovo) */
 134         { USB_DEVICE(0x105b, 0xe065), .driver_info = BTUSB_BCM_PATCHRAM },
 135
 136         /* Broadcom BCM920703 (HTC Vive) */
 137         { USB_VENDOR_AND_INTERFACE_INFO(0x0bb4, 0xff, 0x01, 0x01),
 138           .driver_info = BTUSB_BCM_PATCHRAM },
 139
 140         /* Foxconn - Hon Hai */
 141         { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01),
 142           .driver_info = BTUSB_BCM_PATCHRAM },
 143
 144         /* Lite-On Technology - Broadcom based */
 145         { USB_VENDOR_AND_INTERFACE_INFO(0x04ca, 0xff, 0x01, 0x01),
 146           .driver_info = BTUSB_BCM_PATCHRAM },
 147
 148         /* Broadcom devices with vendor specific id */
 149         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
 150           .driver_info = BTUSB_BCM_PATCHRAM },
 151
 152         /* ASUSTek Computer - Broadcom based */
 153         { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01),
 154           .driver_info = BTUSB_BCM_PATCHRAM },
 155
 156         /* Belkin F8065bf - Broadcom based */
 157         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01),
 158           .driver_info = BTUSB_BCM_PATCHRAM },
 159
 160         /* IMC Networks - Broadcom based */
 161         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01),
 162           .driver_info = BTUSB_BCM_PATCHRAM },
 163
 164         /* Dell Computer - Broadcom based  */
 165         { USB_VENDOR_AND_INTERFACE_INFO(0x413c, 0xff, 0x01, 0x01),
 166           .driver_info = BTUSB_BCM_PATCHRAM },
 167
 168         /* Toshiba Corp - Broadcom based */
 169         { USB_VENDOR_AND_INTERFACE_INFO(0x0930, 0xff, 0x01, 0x01),
 170           .driver_info = BTUSB_BCM_PATCHRAM },
 171
 172         /* Intel Bluetooth USB Bootloader (RAM module) */
 173         { USB_DEVICE(0x8087, 0x0a5a),
 174           .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
 175
 176         { }     /* Terminating entry */
 177 };
 178
 179 MODULE_DEVICE_TABLE(usb, btusb_table);
 180
 181 static const struct usb_device_id blacklist_table[] = {
 182         /* CSR BlueCore devices */
 183         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 184
 185         /* Broadcom BCM2033 without firmware */
 186         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 187
 188         /* Broadcom BCM2045 devices */
 189         { USB_DEVICE(0x0a5c, 0x2045), .driver_info = BTUSB_BCM2045 },
 190
 191         /* Atheros 3011 with sflash firmware */
 192         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 193         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 194         { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE },
 195         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 196         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 197         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 198         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 199
 200         /* Atheros AR9285 Malbec with sflash firmware */
 201         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 202
 203         /* Atheros 3012 with sflash firmware */
 204         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 205         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 206         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 207         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 208         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 209         { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
 210         { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
 211         { USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 },
 212         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 213         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 214         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 215         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 216         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 217         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 218         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 219         { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
 220         { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
 221         { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
 222         { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 },
 223         { USB_DEVICE(0x04ca, 0x3018), .driver_info = BTUSB_ATH3012 },
 224         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 225         { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
 226         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 227         { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
 228         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 229         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 230         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 231         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 232         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 233         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
 234         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 235         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 236         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 237         { USB_DEVICE(0x0cf3, 0x817b), .driver_info = BTUSB_ATH3012 },
 238         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 239         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 240         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 241         { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 },
 242         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 243         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 244         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 245         { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 },
 246         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 247         { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
 248         { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
 249         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
 250         { USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 },
 251         { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
 252         { USB_DEVICE(0x13d3, 0x3487), .driver_info = BTUSB_ATH3012 },
 253         { USB_DEVICE(0x13d3, 0x3490), .driver_info = BTUSB_ATH3012 },
 254
 255         /* Atheros AR5BBU12 with sflash firmware */
 256         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 257
 258         /* Atheros AR5BBU12 with sflash firmware */
 259         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 260         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 261
 262         /* QCA ROME chipset */
 263         { USB_DEVICE(0x0cf3, 0xe007), .driver_info = BTUSB_QCA_ROME },
 264         { USB_DEVICE(0x0cf3, 0xe009), .driver_info = BTUSB_QCA_ROME },
 265         { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME },
 266         { USB_DEVICE(0x0cf3, 0xe301), .driver_info = BTUSB_QCA_ROME },
 267         { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME },
 268         { USB_DEVICE(0x0489, 0xe092), .driver_info = BTUSB_QCA_ROME },
 269         { USB_DEVICE(0x0489, 0xe0a2), .driver_info = BTUSB_QCA_ROME },
 270         { USB_DEVICE(0x04ca, 0x3011), .driver_info = BTUSB_QCA_ROME },
 271
 272         /* Broadcom BCM2035 */
 273         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 274         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 275         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 276
 277         /* Broadcom BCM2045 */
 278         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 279         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 280
 281         /* IBM/Lenovo ThinkPad with Broadcom chip */
 282         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 283         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 284
 285         /* HP laptop with Broadcom chip */
 286         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 287
 288         /* Dell laptop with Broadcom chip */
 289         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 290
 291         /* Dell Wireless 370 and 410 devices */
 292         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 293         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 294
 295         /* Belkin F8T012 and F8T013 devices */
 296         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 297         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 298
 299         /* Asus WL-BTD202 device */
 300         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 301
 302         /* Kensington Bluetooth USB adapter */
 303         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 304
 305         /* RTX Telecom based adapters with buggy SCO support */
 306         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 307         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 308
 309         /* CONWISE Technology based adapters with buggy SCO support */
 310         { USB_DEVICE(0x0e5e, 0x6622),
 311           .driver_info = BTUSB_BROKEN_ISOC | BTUSB_CW6622},
 312
 313         /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
 314         { USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE },
 315
 316         /* Digianswer devices */
 317         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 318         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 319
 320         /* CSR BlueCore Bluetooth Sniffer */
 321         { USB_DEVICE(0x0a12, 0x0002),
 322           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 323
 324         /* Frontline ComProbe Bluetooth Sniffer */
 325         { USB_DEVICE(0x16d3, 0x0002),
 326           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 327
 328         /* Marvell Bluetooth devices */
 329         { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
 330         { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
 331         { USB_DEVICE(0x1286, 0x204e), .driver_info = BTUSB_MARVELL },
 332
 333         /* Intel Bluetooth devices */
 334         { USB_DEVICE(0x8087, 0x0025), .driver_info = BTUSB_INTEL_NEW },
 335         { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR },
 336         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 337         { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
 338         { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_NEW },
 339         { USB_DEVICE(0x8087, 0x0aa7), .driver_info = BTUSB_INTEL },
 340         { USB_DEVICE(0x8087, 0x0aaa), .driver_info = BTUSB_INTEL_NEW },
 341
 342         /* Other Intel Bluetooth devices */
 343         { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01),
 344           .driver_info = BTUSB_IGNORE },
 345
 346         /* Realtek Bluetooth devices */
 347         { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01),
 348           .driver_info = BTUSB_REALTEK },
 349
 350         /* Additional Realtek 8723AE Bluetooth devices */
 351         { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK },
 352         { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK },
 353
 354         /* Additional Realtek 8723BE Bluetooth devices */
 355         { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK },
 356         { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK },
 357         { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
 358         { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
 359         { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },
 360
 361         /* Additional Realtek 8821AE Bluetooth devices */
 362         { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
 363         { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },
 364         { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK },
 365         { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK },
 366         { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK },
 367
 368         /* Silicon Wave based devices */
 369         { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE },
 370
 371         { }     /* Terminating entry */
 372 };
 373
 374 #define BTUSB_MAX_ISOC_FRAMES   10
 375
 376 #define BTUSB_INTR_RUNNING      0
 377 #define BTUSB_BULK_RUNNING      1
 378 #define BTUSB_ISOC_RUNNING      2
 379 #define BTUSB_SUSPENDING        3
 380 #define BTUSB_DID_ISO_RESUME    4
 381 #define BTUSB_BOOTLOADER        5
 382 #define BTUSB_DOWNLOADING       6
 383 #define BTUSB_FIRMWARE_LOADED   7
 384 #define BTUSB_FIRMWARE_FAILED   8
 385 #define BTUSB_BOOTING           9
 386 #define BTUSB_RESET_RESUME      10
 387 #define BTUSB_DIAG_RUNNING      11
 388 #define BTUSB_OOB_WAKE_ENABLED  12
 389
 390 struct btusb_data {
 391         struct hci_dev       *hdev;
 392         struct usb_device    *udev;
 393         struct usb_interface *intf;
 394         struct usb_interface *isoc;
 395         struct usb_interface *diag;
 396
 397         unsigned long flags;
 398
 399         struct work_struct work;
 400         struct work_struct waker;
 401
 402         struct usb_anchor deferred;
 403         struct usb_anchor tx_anchor;
 404         int tx_in_flight;
 405         spinlock_t txlock;
 406
 407         struct usb_anchor intr_anchor;
 408         struct usb_anchor bulk_anchor;
 409         struct usb_anchor isoc_anchor;
 410         struct usb_anchor diag_anchor;
 411         spinlock_t rxlock;
 412
 413         struct sk_buff *evt_skb;
 414         struct sk_buff *acl_skb;
 415         struct sk_buff *sco_skb;
 416
 417         struct usb_endpoint_descriptor *intr_ep;
 418         struct usb_endpoint_descriptor *bulk_tx_ep;
 419         struct usb_endpoint_descriptor *bulk_rx_ep;
 420         struct usb_endpoint_descriptor *isoc_tx_ep;
 421         struct usb_endpoint_descriptor *isoc_rx_ep;
 422         struct usb_endpoint_descriptor *diag_tx_ep;
 423         struct usb_endpoint_descriptor *diag_rx_ep;
 424
 425         __u8 cmdreq_type;
 426         __u8 cmdreq;
 427
 428         unsigned int sco_num;
 429         int isoc_altsetting;
 430         int suspend_count;
 431
 432         int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
 433         int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
 434
 435         int (*setup_on_usb)(struct hci_dev *hdev);
 436
 437         int oob_wake_irq;   /* irq for out-of-band wake-on-bt */
 438 };
 439
 440 static inline void btusb_free_frags(struct btusb_data *data)
 441 {
 442         unsigned long flags;
 443
 444         spin_lock_irqsave(&data->rxlock, flags);
 445
 446         kfree_skb(data->evt_skb);
 447         data->evt_skb = NULL;
 448
 449         kfree_skb(data->acl_skb);
 450         data->acl_skb = NULL;
 451
 452         kfree_skb(data->sco_skb);
 453         data->sco_skb = NULL;
 454
 455         spin_unlock_irqrestore(&data->rxlock, flags);
 456 }
 457
 458 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
 459 {
 460         struct sk_buff *skb;
 461         int err = 0;
 462
 463         spin_lock(&data->rxlock);
 464         skb = data->evt_skb;
 465
 466         while (count) {
 467                 int len;
 468
 469                 if (!skb) {
 470                         skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
 471                         if (!skb) {
 472                                 err = -ENOMEM;
 473                                 break;
 474                         }
 475
 476                         hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
 477                         hci_skb_expect(skb) = HCI_EVENT_HDR_SIZE;
 478                 }
 479
 480                 len = min_t(uint, hci_skb_expect(skb), count);
 481                 skb_put_data(skb, buffer, len);
 482
 483                 count -= len;
 484                 buffer += len;
 485                 hci_skb_expect(skb) -= len;
 486
 487                 if (skb->len == HCI_EVENT_HDR_SIZE) {
 488                         /* Complete event header */
 489                         hci_skb_expect(skb) = hci_event_hdr(skb)->plen;
 490
 491                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 492                                 kfree_skb(skb);
 493                                 skb = NULL;
 494
 495                                 err = -EILSEQ;
 496                                 break;
 497                         }
 498                 }
 499
 500                 if (!hci_skb_expect(skb)) {
 501                         /* Complete frame */
 502                         data->recv_event(data->hdev, skb);
 503                         skb = NULL;
 504                 }
 505         }
 506
 507         data->evt_skb = skb;
 508         spin_unlock(&data->rxlock);
 509
 510         return err;
 511 }
 512
 513 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
 514 {
 515         struct sk_buff *skb;
 516         int err = 0;
 517
 518         spin_lock(&data->rxlock);
 519         skb = data->acl_skb;
 520
 521         while (count) {
 522                 int len;
 523
 524                 if (!skb) {
 525                         skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
 526                         if (!skb) {
 527                                 err = -ENOMEM;
 528                                 break;
 529                         }
 530
 531                         hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT;
 532                         hci_skb_expect(skb) = HCI_ACL_HDR_SIZE;
 533                 }
 534
 535                 len = min_t(uint, hci_skb_expect(skb), count);
 536                 skb_put_data(skb, buffer, len);
 537
 538                 count -= len;
 539                 buffer += len;
 540                 hci_skb_expect(skb) -= len;
 541
 542                 if (skb->len == HCI_ACL_HDR_SIZE) {
 543                         __le16 dlen = hci_acl_hdr(skb)->dlen;
 544
 545                         /* Complete ACL header */
 546                         hci_skb_expect(skb) = __le16_to_cpu(dlen);
 547
 548                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 549                                 kfree_skb(skb);
 550                                 skb = NULL;
 551
 552                                 err = -EILSEQ;
 553                                 break;
 554                         }
 555                 }
 556
 557                 if (!hci_skb_expect(skb)) {
 558                         /* Complete frame */
 559                         hci_recv_frame(data->hdev, skb);
 560                         skb = NULL;
 561                 }
 562         }
 563
 564         data->acl_skb = skb;
 565         spin_unlock(&data->rxlock);
 566
 567         return err;
 568 }
 569
 570 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
 571 {
 572         struct sk_buff *skb;
 573         int err = 0;
 574
 575         spin_lock(&data->rxlock);
 576         skb = data->sco_skb;
 577
 578         while (count) {
 579                 int len;
 580
 581                 if (!skb) {
 582                         skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
 583                         if (!skb) {
 584                                 err = -ENOMEM;
 585                                 break;
 586                         }
 587
 588                         hci_skb_pkt_type(skb) = HCI_SCODATA_PKT;
 589                         hci_skb_expect(skb) = HCI_SCO_HDR_SIZE;
 590                 }
 591
 592                 len = min_t(uint, hci_skb_expect(skb), count);
 593                 skb_put_data(skb, buffer, len);
 594
 595                 count -= len;
 596                 buffer += len;
 597                 hci_skb_expect(skb) -= len;
 598
 599                 if (skb->len == HCI_SCO_HDR_SIZE) {
 600                         /* Complete SCO header */
 601                         hci_skb_expect(skb) = hci_sco_hdr(skb)->dlen;
 602
 603                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 604                                 kfree_skb(skb);
 605                                 skb = NULL;
 606
 607                                 err = -EILSEQ;
 608                                 break;
 609                         }
 610                 }
 611
 612                 if (!hci_skb_expect(skb)) {
 613                         /* Complete frame */
 614                         hci_recv_frame(data->hdev, skb);
 615                         skb = NULL;
 616                 }
 617         }
 618
 619         data->sco_skb = skb;
 620         spin_unlock(&data->rxlock);
 621
 622         return err;
 623 }
 624
 625 static void btusb_intr_complete(struct urb *urb)
 626 {
 627         struct hci_dev *hdev = urb->context;
 628         struct btusb_data *data = hci_get_drvdata(hdev);
 629         int err;
 630
 631         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 632                urb->actual_length);
 633
 634         if (!test_bit(HCI_RUNNING, &hdev->flags))
 635                 return;
 636
 637         if (urb->status == 0) {
 638                 hdev->stat.byte_rx += urb->actual_length;
 639
 640                 if (btusb_recv_intr(data, urb->transfer_buffer,
 641                                     urb->actual_length) < 0) {
 642                         BT_ERR("%s corrupted event packet", hdev->name);
 643                         hdev->stat.err_rx++;
 644                 }
 645         } else if (urb->status == -ENOENT) {
 646                 /* Avoid suspend failed when usb_kill_urb */
 647                 return;
 648         }
 649
 650         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 651                 return;
 652
 653         usb_mark_last_busy(data->udev);
 654         usb_anchor_urb(urb, &data->intr_anchor);
 655
 656         err = usb_submit_urb(urb, GFP_ATOMIC);
 657         if (err < 0) {
 658                 /* -EPERM: urb is being killed;
 659                  * -ENODEV: device got disconnected */
 660                 if (err != -EPERM && err != -ENODEV)
 661                         BT_ERR("%s urb %p failed to resubmit (%d)",
 662                                hdev->name, urb, -err);
 663                 usb_unanchor_urb(urb);
 664         }
 665 }
 666
 667 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 668 {
 669         struct btusb_data *data = hci_get_drvdata(hdev);
 670         struct urb *urb;
 671         unsigned char *buf;
 672         unsigned int pipe;
 673         int err, size;
 674
 675         BT_DBG("%s", hdev->name);
 676
 677         if (!data->intr_ep)
 678                 return -ENODEV;
 679
 680         urb = usb_alloc_urb(0, mem_flags);
 681         if (!urb)
 682                 return -ENOMEM;
 683
 684         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 685
 686         buf = kmalloc(size, mem_flags);
 687         if (!buf) {
 688                 usb_free_urb(urb);
 689                 return -ENOMEM;
 690         }
 691
 692         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 693
 694         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 695                          btusb_intr_complete, hdev, data->intr_ep->bInterval);
 696
 697         urb->transfer_flags |= URB_FREE_BUFFER;
 698
 699         usb_anchor_urb(urb, &data->intr_anchor);
 700
 701         err = usb_submit_urb(urb, mem_flags);
 702         if (err < 0) {
 703                 if (err != -EPERM && err != -ENODEV)
 704                         BT_ERR("%s urb %p submission failed (%d)",
 705                                hdev->name, urb, -err);
 706                 usb_unanchor_urb(urb);
 707         }
 708
 709         usb_free_urb(urb);
 710
 711         return err;
 712 }
 713
 714 static void btusb_bulk_complete(struct urb *urb)
 715 {
 716         struct hci_dev *hdev = urb->context;
 717         struct btusb_data *data = hci_get_drvdata(hdev);
 718         int err;
 719
 720         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 721                urb->actual_length);
 722
 723         if (!test_bit(HCI_RUNNING, &hdev->flags))
 724                 return;
 725
 726         if (urb->status == 0) {
 727                 hdev->stat.byte_rx += urb->actual_length;
 728
 729                 if (data->recv_bulk(data, urb->transfer_buffer,
 730                                     urb->actual_length) < 0) {
 731                         BT_ERR("%s corrupted ACL packet", hdev->name);
 732                         hdev->stat.err_rx++;
 733                 }
 734         } else if (urb->status == -ENOENT) {
 735                 /* Avoid suspend failed when usb_kill_urb */
 736                 return;
 737         }
 738
 739         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 740                 return;
 741
 742         usb_anchor_urb(urb, &data->bulk_anchor);
 743         usb_mark_last_busy(data->udev);
 744
 745         err = usb_submit_urb(urb, GFP_ATOMIC);
 746         if (err < 0) {
 747                 /* -EPERM: urb is being killed;
 748                  * -ENODEV: device got disconnected */
 749                 if (err != -EPERM && err != -ENODEV)
 750                         BT_ERR("%s urb %p failed to resubmit (%d)",
 751                                hdev->name, urb, -err);
 752                 usb_unanchor_urb(urb);
 753         }
 754 }
 755
 756 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 757 {
 758         struct btusb_data *data = hci_get_drvdata(hdev);
 759         struct urb *urb;
 760         unsigned char *buf;
 761         unsigned int pipe;
 762         int err, size = HCI_MAX_FRAME_SIZE;
 763
 764         BT_DBG("%s", hdev->name);
 765
 766         if (!data->bulk_rx_ep)
 767                 return -ENODEV;
 768
 769         urb = usb_alloc_urb(0, mem_flags);
 770         if (!urb)
 771                 return -ENOMEM;
 772
 773         buf = kmalloc(size, mem_flags);
 774         if (!buf) {
 775                 usb_free_urb(urb);
 776                 return -ENOMEM;
 777         }
 778
 779         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 780
 781         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
 782                           btusb_bulk_complete, hdev);
 783
 784         urb->transfer_flags |= URB_FREE_BUFFER;
 785
 786         usb_mark_last_busy(data->udev);
 787         usb_anchor_urb(urb, &data->bulk_anchor);
 788
 789         err = usb_submit_urb(urb, mem_flags);
 790         if (err < 0) {
 791                 if (err != -EPERM && err != -ENODEV)
 792                         BT_ERR("%s urb %p submission failed (%d)",
 793                                hdev->name, urb, -err);
 794                 usb_unanchor_urb(urb);
 795         }
 796
 797         usb_free_urb(urb);
 798
 799         return err;
 800 }
 801
 802 static void btusb_isoc_complete(struct urb *urb)
 803 {
 804         struct hci_dev *hdev = urb->context;
 805         struct btusb_data *data = hci_get_drvdata(hdev);
 806         int i, err;
 807
 808         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 809                urb->actual_length);
 810
 811         if (!test_bit(HCI_RUNNING, &hdev->flags))
 812                 return;
 813
 814         if (urb->status == 0) {
 815                 for (i = 0; i < urb->number_of_packets; i++) {
 816                         unsigned int offset = urb->iso_frame_desc[i].offset;
 817                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 818
 819                         if (urb->iso_frame_desc[i].status)
 820                                 continue;
 821
 822                         hdev->stat.byte_rx += length;
 823
 824                         if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
 825                                             length) < 0) {
 826                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 827                                 hdev->stat.err_rx++;
 828                         }
 829                 }
 830         } else if (urb->status == -ENOENT) {
 831                 /* Avoid suspend failed when usb_kill_urb */
 832                 return;
 833         }
 834
 835         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 836                 return;
 837
 838         usb_anchor_urb(urb, &data->isoc_anchor);
 839
 840         err = usb_submit_urb(urb, GFP_ATOMIC);
 841         if (err < 0) {
 842                 /* -EPERM: urb is being killed;
 843                  * -ENODEV: device got disconnected */
 844                 if (err != -EPERM && err != -ENODEV)
 845                         BT_ERR("%s urb %p failed to resubmit (%d)",
 846                                hdev->name, urb, -err);
 847                 usb_unanchor_urb(urb);
 848         }
 849 }
 850
 851 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 852 {
 853         int i, offset = 0;
 854
 855         BT_DBG("len %d mtu %d", len, mtu);
 856
 857         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 858                                         i++, offset += mtu, len -= mtu) {
 859                 urb->iso_frame_desc[i].offset = offset;
 860                 urb->iso_frame_desc[i].length = mtu;
 861         }
 862
 863         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 864                 urb->iso_frame_desc[i].offset = offset;
 865                 urb->iso_frame_desc[i].length = len;
 866                 i++;
 867         }
 868
 869         urb->number_of_packets = i;
 870 }
 871
 872 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 873 {
 874         struct btusb_data *data = hci_get_drvdata(hdev);
 875         struct urb *urb;
 876         unsigned char *buf;
 877         unsigned int pipe;
 878         int err, size;
 879
 880         BT_DBG("%s", hdev->name);
 881
 882         if (!data->isoc_rx_ep)
 883                 return -ENODEV;
 884
 885         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 886         if (!urb)
 887                 return -ENOMEM;
 888
 889         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 890                                                 BTUSB_MAX_ISOC_FRAMES;
 891
 892         buf = kmalloc(size, mem_flags);
 893         if (!buf) {
 894                 usb_free_urb(urb);
 895                 return -ENOMEM;
 896         }
 897
 898         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 899
 900         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 901                          hdev, data->isoc_rx_ep->bInterval);
 902
 903         urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
 904
 905         __fill_isoc_descriptor(urb, size,
 906                                le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 907
 908         usb_anchor_urb(urb, &data->isoc_anchor);
 909
 910         err = usb_submit_urb(urb, mem_flags);
 911         if (err < 0) {
 912                 if (err != -EPERM && err != -ENODEV)
 913                         BT_ERR("%s urb %p submission failed (%d)",
 914                                hdev->name, urb, -err);
 915                 usb_unanchor_urb(urb);
 916         }
 917
 918         usb_free_urb(urb);
 919
 920         return err;
 921 }
 922
 923 static void btusb_diag_complete(struct urb *urb)
 924 {
 925         struct hci_dev *hdev = urb->context;
 926         struct btusb_data *data = hci_get_drvdata(hdev);
 927         int err;
 928
 929         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 930                urb->actual_length);
 931
 932         if (urb->status == 0) {
 933                 struct sk_buff *skb;
 934
 935                 skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC);
 936                 if (skb) {
 937                         skb_put_data(skb, urb->transfer_buffer,
 938                                      urb->actual_length);
 939                         hci_recv_diag(hdev, skb);
 940                 }
 941         } else if (urb->status == -ENOENT) {
 942                 /* Avoid suspend failed when usb_kill_urb */
 943                 return;
 944         }
 945
 946         if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags))
 947                 return;
 948
 949         usb_anchor_urb(urb, &data->diag_anchor);
 950         usb_mark_last_busy(data->udev);
 951
 952         err = usb_submit_urb(urb, GFP_ATOMIC);
 953         if (err < 0) {
 954                 /* -EPERM: urb is being killed;
 955                  * -ENODEV: device got disconnected */
 956                 if (err != -EPERM && err != -ENODEV)
 957                         BT_ERR("%s urb %p failed to resubmit (%d)",
 958                                hdev->name, urb, -err);
 959                 usb_unanchor_urb(urb);
 960         }
 961 }
 962
 963 static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags)
 964 {
 965         struct btusb_data *data = hci_get_drvdata(hdev);
 966         struct urb *urb;
 967         unsigned char *buf;
 968         unsigned int pipe;
 969         int err, size = HCI_MAX_FRAME_SIZE;
 970
 971         BT_DBG("%s", hdev->name);
 972
 973         if (!data->diag_rx_ep)
 974                 return -ENODEV;
 975
 976         urb = usb_alloc_urb(0, mem_flags);
 977         if (!urb)
 978                 return -ENOMEM;
 979
 980         buf = kmalloc(size, mem_flags);
 981         if (!buf) {
 982                 usb_free_urb(urb);
 983                 return -ENOMEM;
 984         }
 985
 986         pipe = usb_rcvbulkpipe(data->udev, data->diag_rx_ep->bEndpointAddress);
 987
 988         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
 989                           btusb_diag_complete, hdev);
 990
 991         urb->transfer_flags |= URB_FREE_BUFFER;
 992
 993         usb_mark_last_busy(data->udev);
 994         usb_anchor_urb(urb, &data->diag_anchor);
 995
 996         err = usb_submit_urb(urb, mem_flags);
 997         if (err < 0) {
 998                 if (err != -EPERM && err != -ENODEV)
 999                         BT_ERR("%s urb %p submission failed (%d)",
1000                                hdev->name, urb, -err);
1001                 usb_unanchor_urb(urb);
1002         }
1003
1004         usb_free_urb(urb);
1005
1006         return err;
1007 }
1008
1009 static void btusb_tx_complete(struct urb *urb)
1010 {
1011         struct sk_buff *skb = urb->context;
1012         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1013         struct btusb_data *data = hci_get_drvdata(hdev);
1014
1015         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1016                urb->actual_length);
1017
1018         if (!test_bit(HCI_RUNNING, &hdev->flags))
1019                 goto done;
1020
1021         if (!urb->status)
1022                 hdev->stat.byte_tx += urb->transfer_buffer_length;
1023         else
1024                 hdev->stat.err_tx++;
1025
1026 done:
1027         spin_lock(&data->txlock);
1028         data->tx_in_flight--;
1029         spin_unlock(&data->txlock);
1030
1031         kfree(urb->setup_packet);
1032
1033         kfree_skb(skb);
1034 }
1035
1036 static void btusb_isoc_tx_complete(struct urb *urb)
1037 {
1038         struct sk_buff *skb = urb->context;
1039         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1040
1041         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1042                urb->actual_length);
1043
1044         if (!test_bit(HCI_RUNNING, &hdev->flags))
1045                 goto done;
1046
1047         if (!urb->status)
1048                 hdev->stat.byte_tx += urb->transfer_buffer_length;
1049         else
1050                 hdev->stat.err_tx++;
1051
1052 done:
1053         kfree(urb->setup_packet);
1054
1055         kfree_skb(skb);
1056 }
1057
1058 static int btusb_open(struct hci_dev *hdev)
1059 {
1060         struct btusb_data *data = hci_get_drvdata(hdev);
1061         int err;
1062
1063         BT_DBG("%s", hdev->name);
1064
1065         err = usb_autopm_get_interface(data->intf);
1066         if (err < 0)
1067                 return err;
1068
1069         /* Patching USB firmware files prior to starting any URBs of HCI path
1070          * It is more safe to use USB bulk channel for downloading USB patch
1071          */
1072         if (data->setup_on_usb) {
1073                 err = data->setup_on_usb(hdev);
1074                 if (err < 0)
1075                         return err;
1076         }
1077
1078         data->intf->needs_remote_wakeup = 1;
1079
1080         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
1081                 goto done;
1082
1083         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
1084         if (err < 0)
1085                 goto failed;
1086
1087         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1088         if (err < 0) {
1089                 usb_kill_anchored_urbs(&data->intr_anchor);
1090                 goto failed;
1091         }
1092
1093         set_bit(BTUSB_BULK_RUNNING, &data->flags);
1094         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1095
1096         if (data->diag) {
1097                 if (!btusb_submit_diag_urb(hdev, GFP_KERNEL))
1098                         set_bit(BTUSB_DIAG_RUNNING, &data->flags);
1099         }
1100
1101 done:
1102         usb_autopm_put_interface(data->intf);
1103         return 0;
1104
1105 failed:
1106         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1107         usb_autopm_put_interface(data->intf);
1108         return err;
1109 }
1110
1111 static void btusb_stop_traffic(struct btusb_data *data)
1112 {
1113         usb_kill_anchored_urbs(&data->intr_anchor);
1114         usb_kill_anchored_urbs(&data->bulk_anchor);
1115         usb_kill_anchored_urbs(&data->isoc_anchor);
1116         usb_kill_anchored_urbs(&data->diag_anchor);
1117 }
1118
1119 static int btusb_close(struct hci_dev *hdev)
1120 {
1121         struct btusb_data *data = hci_get_drvdata(hdev);
1122         int err;
1123
1124         BT_DBG("%s", hdev->name);
1125
1126         cancel_work_sync(&data->work);
1127         cancel_work_sync(&data->waker);
1128
1129         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1130         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1131         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1132         clear_bit(BTUSB_DIAG_RUNNING, &data->flags);
1133
1134         btusb_stop_traffic(data);
1135         btusb_free_frags(data);
1136
1137         err = usb_autopm_get_interface(data->intf);
1138         if (err < 0)
1139                 goto failed;
1140
1141         data->intf->needs_remote_wakeup = 0;
1142         usb_autopm_put_interface(data->intf);
1143
1144 failed:
1145         usb_scuttle_anchored_urbs(&data->deferred);
1146         return 0;
1147 }
1148
1149 static int btusb_flush(struct hci_dev *hdev)
1150 {
1151         struct btusb_data *data = hci_get_drvdata(hdev);
1152
1153         BT_DBG("%s", hdev->name);
1154
1155         usb_kill_anchored_urbs(&data->tx_anchor);
1156         btusb_free_frags(data);
1157
1158         return 0;
1159 }
1160
1161 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
1162 {
1163         struct btusb_data *data = hci_get_drvdata(hdev);
1164         struct usb_ctrlrequest *dr;
1165         struct urb *urb;
1166         unsigned int pipe;
1167
1168         urb = usb_alloc_urb(0, GFP_KERNEL);
1169         if (!urb)
1170                 return ERR_PTR(-ENOMEM);
1171
1172         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
1173         if (!dr) {
1174                 usb_free_urb(urb);
1175                 return ERR_PTR(-ENOMEM);
1176         }
1177
1178         dr->bRequestType = data->cmdreq_type;
1179         dr->bRequest     = data->cmdreq;
1180         dr->wIndex       = 0;
1181         dr->wValue       = 0;
1182         dr->wLength      = __cpu_to_le16(skb->len);
1183
1184         pipe = usb_sndctrlpipe(data->udev, 0x00);
1185
1186         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
1187                              skb->data, skb->len, btusb_tx_complete, skb);
1188
1189         skb->dev = (void *)hdev;
1190
1191         return urb;
1192 }
1193
1194 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
1195 {
1196         struct btusb_data *data = hci_get_drvdata(hdev);
1197         struct urb *urb;
1198         unsigned int pipe;
1199
1200         if (!data->bulk_tx_ep)
1201                 return ERR_PTR(-ENODEV);
1202
1203         urb = usb_alloc_urb(0, GFP_KERNEL);
1204         if (!urb)
1205                 return ERR_PTR(-ENOMEM);
1206
1207         pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1208
1209         usb_fill_bulk_urb(urb, data->udev, pipe,
1210                           skb->data, skb->len, btusb_tx_complete, skb);
1211
1212         skb->dev = (void *)hdev;
1213
1214         return urb;
1215 }
1216
1217 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1218 {
1219         struct btusb_data *data = hci_get_drvdata(hdev);
1220         struct urb *urb;
1221         unsigned int pipe;
1222
1223         if (!data->isoc_tx_ep)
1224                 return ERR_PTR(-ENODEV);
1225
1226         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1227         if (!urb)
1228                 return ERR_PTR(-ENOMEM);
1229
1230         pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1231
1232         usb_fill_int_urb(urb, data->udev, pipe,
1233                          skb->data, skb->len, btusb_isoc_tx_complete,
1234                          skb, data->isoc_tx_ep->bInterval);
1235
1236         urb->transfer_flags  = URB_ISO_ASAP;
1237
1238         __fill_isoc_descriptor(urb, skb->len,
1239                                le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1240
1241         skb->dev = (void *)hdev;
1242
1243         return urb;
1244 }
1245
1246 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1247 {
1248         struct btusb_data *data = hci_get_drvdata(hdev);
1249         int err;
1250
1251         usb_anchor_urb(urb, &data->tx_anchor);
1252
1253         err = usb_submit_urb(urb, GFP_KERNEL);
1254         if (err < 0) {
1255                 if (err != -EPERM && err != -ENODEV)
1256                         BT_ERR("%s urb %p submission failed (%d)",
1257                                hdev->name, urb, -err);
1258                 kfree(urb->setup_packet);
1259                 usb_unanchor_urb(urb);
1260         } else {
1261                 usb_mark_last_busy(data->udev);
1262         }
1263
1264         usb_free_urb(urb);
1265         return err;
1266 }
1267
1268 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1269 {
1270         struct btusb_data *data = hci_get_drvdata(hdev);
1271         unsigned long flags;
1272         bool suspending;
1273
1274         spin_lock_irqsave(&data->txlock, flags);
1275         suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1276         if (!suspending)
1277                 data->tx_in_flight++;
1278         spin_unlock_irqrestore(&data->txlock, flags);
1279
1280         if (!suspending)
1281                 return submit_tx_urb(hdev, urb);
1282
1283         usb_anchor_urb(urb, &data->deferred);
1284         schedule_work(&data->waker);
1285
1286         usb_free_urb(urb);
1287         return 0;
1288 }
1289
1290 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1291 {
1292         struct urb *urb;
1293
1294         BT_DBG("%s", hdev->name);
1295
1296         switch (hci_skb_pkt_type(skb)) {
1297         case HCI_COMMAND_PKT:
1298                 urb = alloc_ctrl_urb(hdev, skb);
1299                 if (IS_ERR(urb))
1300                         return PTR_ERR(urb);
1301
1302                 hdev->stat.cmd_tx++;
1303                 return submit_or_queue_tx_urb(hdev, urb);
1304
1305         case HCI_ACLDATA_PKT:
1306                 urb = alloc_bulk_urb(hdev, skb);
1307                 if (IS_ERR(urb))
1308                         return PTR_ERR(urb);
1309
1310                 hdev->stat.acl_tx++;
1311                 return submit_or_queue_tx_urb(hdev, urb);
1312
1313         case HCI_SCODATA_PKT:
1314                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1315                         return -ENODEV;
1316
1317                 urb = alloc_isoc_urb(hdev, skb);
1318                 if (IS_ERR(urb))
1319                         return PTR_ERR(urb);
1320
1321                 hdev->stat.sco_tx++;
1322                 return submit_tx_urb(hdev, urb);
1323         }
1324
1325         return -EILSEQ;
1326 }
1327
1328 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1329 {
1330         struct btusb_data *data = hci_get_drvdata(hdev);
1331
1332         BT_DBG("%s evt %d", hdev->name, evt);
1333
1334         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1335                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1336                 schedule_work(&data->work);
1337         }
1338 }
1339
1340 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1341 {
1342         struct btusb_data *data = hci_get_drvdata(hdev);
1343         struct usb_interface *intf = data->isoc;
1344         struct usb_endpoint_descriptor *ep_desc;
1345         int i, err;
1346
1347         if (!data->isoc)
1348                 return -ENODEV;
1349
1350         err = usb_set_interface(data->udev, 1, altsetting);
1351         if (err < 0) {
1352                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
1353                 return err;
1354         }
1355
1356         data->isoc_altsetting = altsetting;
1357
1358         data->isoc_tx_ep = NULL;
1359         data->isoc_rx_ep = NULL;
1360
1361         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1362                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1363
1364                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1365                         data->isoc_tx_ep = ep_desc;
1366                         continue;
1367                 }
1368
1369                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1370                         data->isoc_rx_ep = ep_desc;
1371                         continue;
1372                 }
1373         }
1374
1375         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1376                 BT_ERR("%s invalid SCO descriptors", hdev->name);
1377                 return -ENODEV;
1378         }
1379
1380         return 0;
1381 }
1382
1383 static void btusb_work(struct work_struct *work)
1384 {
1385         struct btusb_data *data = container_of(work, struct btusb_data, work);
1386         struct hci_dev *hdev = data->hdev;
1387         int new_alts;
1388         int err;
1389
1390         if (data->sco_num > 0) {
1391                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1392                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1393                         if (err < 0) {
1394                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1395                                 usb_kill_anchored_urbs(&data->isoc_anchor);
1396                                 return;
1397                         }
1398
1399                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1400                 }
1401
1402                 if (hdev->voice_setting & 0x0020) {
1403                         static const int alts[3] = { 2, 4, 5 };
1404
1405                         new_alts = alts[data->sco_num - 1];
1406                 } else {
1407                         new_alts = data->sco_num;
1408                 }
1409
1410                 if (data->isoc_altsetting != new_alts) {
1411                         unsigned long flags;
1412
1413                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1414                         usb_kill_anchored_urbs(&data->isoc_anchor);
1415
1416                         /* When isochronous alternate setting needs to be
1417                          * changed, because SCO connection has been added
1418                          * or removed, a packet fragment may be left in the
1419                          * reassembling state. This could lead to wrongly
1420                          * assembled fragments.
1421                          *
1422                          * Clear outstanding fragment when selecting a new
1423                          * alternate setting.
1424                          */
1425                         spin_lock_irqsave(&data->rxlock, flags);
1426                         kfree_skb(data->sco_skb);
1427                         data->sco_skb = NULL;
1428                         spin_unlock_irqrestore(&data->rxlock, flags);
1429
1430                         if (__set_isoc_interface(hdev, new_alts) < 0)
1431                                 return;
1432                 }
1433
1434                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1435                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1436                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1437                         else
1438                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1439                 }
1440         } else {
1441                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1442                 usb_kill_anchored_urbs(&data->isoc_anchor);
1443
1444                 __set_isoc_interface(hdev, 0);
1445                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1446                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1447         }
1448 }
1449
1450 static void btusb_waker(struct work_struct *work)
1451 {
1452         struct btusb_data *data = container_of(work, struct btusb_data, waker);
1453         int err;
1454
1455         err = usb_autopm_get_interface(data->intf);
1456         if (err < 0)
1457                 return;
1458
1459         usb_autopm_put_interface(data->intf);
1460 }
1461
1462 static int btusb_setup_bcm92035(struct hci_dev *hdev)
1463 {
1464         struct sk_buff *skb;
1465         u8 val = 0x00;
1466
1467         BT_DBG("%s", hdev->name);
1468
1469         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1470         if (IS_ERR(skb))
1471                 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
1472         else
1473                 kfree_skb(skb);
1474
1475         return 0;
1476 }
1477
1478 static int btusb_setup_csr(struct hci_dev *hdev)
1479 {
1480         struct hci_rp_read_local_version *rp;
1481         struct sk_buff *skb;
1482
1483         BT_DBG("%s", hdev->name);
1484
1485         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1486                              HCI_INIT_TIMEOUT);
1487         if (IS_ERR(skb)) {
1488                 int err = PTR_ERR(skb);
1489                 BT_ERR("%s: CSR: Local version failed (%d)", hdev->name, err);
1490                 return err;
1491         }
1492
1493         if (skb->len != sizeof(struct hci_rp_read_local_version)) {
1494                 BT_ERR("%s: CSR: Local version length mismatch", hdev->name);
1495                 kfree_skb(skb);
1496                 return -EIO;
1497         }
1498
1499         rp = (struct hci_rp_read_local_version *)skb->data;
1500
1501         /* Detect controllers which aren't real CSR ones. */
1502         if (le16_to_cpu(rp->manufacturer) != 10 ||
1503             le16_to_cpu(rp->lmp_subver) == 0x0c5c) {
1504                 /* Clear the reset quirk since this is not an actual
1505                  * early Bluetooth 1.1 device from CSR.
1506                  */
1507                 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1508
1509                 /* These fake CSR controllers have all a broken
1510                  * stored link key handling and so just disable it.
1511                  */
1512                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
1513         }
1514
1515         kfree_skb(skb);
1516
1517         return 0;
1518 }
1519
1520 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1521                                                        struct intel_version *ver)
1522 {
1523         const struct firmware *fw;
1524         char fwname[64];
1525         int ret;
1526
1527         snprintf(fwname, sizeof(fwname),
1528                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1529                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
1530                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1531                  ver->fw_build_ww, ver->fw_build_yy);
1532
1533         ret = request_firmware(&fw, fwname, &hdev->dev);
1534         if (ret < 0) {
1535                 if (ret == -EINVAL) {
1536                         BT_ERR("%s Intel firmware file request failed (%d)",
1537                                hdev->name, ret);
1538                         return NULL;
1539                 }
1540
1541                 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1542                        hdev->name, fwname, ret);
1543
1544                 /* If the correct firmware patch file is not found, use the
1545                  * default firmware patch file instead
1546                  */
1547                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1548                          ver->hw_platform, ver->hw_variant);
1549                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1550                         BT_ERR("%s failed to open default Intel fw file: %s",
1551                                hdev->name, fwname);
1552                         return NULL;
1553                 }
1554         }
1555
1556         BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1557
1558         return fw;
1559 }
1560
1561 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1562                                       const struct firmware *fw,
1563                                       const u8 **fw_ptr, int *disable_patch)
1564 {
1565         struct sk_buff *skb;
1566         struct hci_command_hdr *cmd;
1567         const u8 *cmd_param;
1568         struct hci_event_hdr *evt = NULL;
1569         const u8 *evt_param = NULL;
1570         int remain = fw->size - (*fw_ptr - fw->data);
1571
1572         /* The first byte indicates the types of the patch command or event.
1573          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1574          * in the current firmware buffer doesn't start with 0x01 or
1575          * the size of remain buffer is smaller than HCI command header,
1576          * the firmware file is corrupted and it should stop the patching
1577          * process.
1578          */
1579         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1580                 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1581                 return -EINVAL;
1582         }
1583         (*fw_ptr)++;
1584         remain--;
1585
1586         cmd = (struct hci_command_hdr *)(*fw_ptr);
1587         *fw_ptr += sizeof(*cmd);
1588         remain -= sizeof(*cmd);
1589
1590         /* Ensure that the remain firmware data is long enough than the length
1591          * of command parameter. If not, the firmware file is corrupted.
1592          */
1593         if (remain < cmd->plen) {
1594                 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1595                 return -EFAULT;
1596         }
1597
1598         /* If there is a command that loads a patch in the firmware
1599          * file, then enable the patch upon success, otherwise just
1600          * disable the manufacturer mode, for example patch activation
1601          * is not required when the default firmware patch file is used
1602          * because there are no patch data to load.
1603          */
1604         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1605                 *disable_patch = 0;
1606
1607         cmd_param = *fw_ptr;
1608         *fw_ptr += cmd->plen;
1609         remain -= cmd->plen;
1610
1611         /* This reads the expected events when the above command is sent to the
1612          * device. Some vendor commands expects more than one events, for
1613          * example command status event followed by vendor specific event.
1614          * For this case, it only keeps the last expected event. so the command
1615          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1616          * last expected event.
1617          */
1618         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1619                 (*fw_ptr)++;
1620                 remain--;
1621
1622                 evt = (struct hci_event_hdr *)(*fw_ptr);
1623                 *fw_ptr += sizeof(*evt);
1624                 remain -= sizeof(*evt);
1625
1626                 if (remain < evt->plen) {
1627                         BT_ERR("%s Intel fw corrupted: invalid evt len",
1628                                hdev->name);
1629                         return -EFAULT;
1630                 }
1631
1632                 evt_param = *fw_ptr;
1633                 *fw_ptr += evt->plen;
1634                 remain -= evt->plen;
1635         }
1636
1637         /* Every HCI commands in the firmware file has its correspond event.
1638          * If event is not found or remain is smaller than zero, the firmware
1639          * file is corrupted.
1640          */
1641         if (!evt || !evt_param || remain < 0) {
1642                 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1643                 return -EFAULT;
1644         }
1645
1646         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1647                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1648         if (IS_ERR(skb)) {
1649                 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1650                        hdev->name, cmd->opcode, PTR_ERR(skb));
1651                 return PTR_ERR(skb);
1652         }
1653
1654         /* It ensures that the returned event matches the event data read from
1655          * the firmware file. At fist, it checks the length and then
1656          * the contents of the event.
1657          */
1658         if (skb->len != evt->plen) {
1659                 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1660                        le16_to_cpu(cmd->opcode));
1661                 kfree_skb(skb);
1662                 return -EFAULT;
1663         }
1664
1665         if (memcmp(skb->data, evt_param, evt->plen)) {
1666                 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1667                        hdev->name, le16_to_cpu(cmd->opcode));
1668                 kfree_skb(skb);
1669                 return -EFAULT;
1670         }
1671         kfree_skb(skb);
1672
1673         return 0;
1674 }
1675
1676 static int btusb_setup_intel(struct hci_dev *hdev)
1677 {
1678         struct sk_buff *skb;
1679         const struct firmware *fw;
1680         const u8 *fw_ptr;
1681         int disable_patch, err;
1682         struct intel_version ver;
1683
1684         BT_DBG("%s", hdev->name);
1685
1686         /* The controller has a bug with the first HCI command sent to it
1687          * returning number of completed commands as zero. This would stall the
1688          * command processing in the Bluetooth core.
1689          *
1690          * As a workaround, send HCI Reset command first which will reset the
1691          * number of completed commands and allow normal command processing
1692          * from now on.
1693          */
1694         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1695         if (IS_ERR(skb)) {
1696                 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1697                        hdev->name, PTR_ERR(skb));
1698                 return PTR_ERR(skb);
1699         }
1700         kfree_skb(skb);
1701
1702         /* Read Intel specific controller version first to allow selection of
1703          * which firmware file to load.
1704          *
1705          * The returned information are hardware variant and revision plus
1706          * firmware variant, revision and build number.
1707          */
1708         err = btintel_read_version(hdev, &ver);
1709         if (err)
1710                 return err;
1711
1712         BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1713                 hdev->name, ver.hw_platform, ver.hw_variant, ver.hw_revision,
1714                 ver.fw_variant,  ver.fw_revision, ver.fw_build_num,
1715                 ver.fw_build_ww, ver.fw_build_yy, ver.fw_patch_num);
1716
1717         /* fw_patch_num indicates the version of patch the device currently
1718          * have. If there is no patch data in the device, it is always 0x00.
1719          * So, if it is other than 0x00, no need to patch the device again.
1720          */
1721         if (ver.fw_patch_num) {
1722                 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1723                         hdev->name, ver.fw_patch_num);
1724                 goto complete;
1725         }
1726
1727         /* Opens the firmware patch file based on the firmware version read
1728          * from the controller. If it fails to open the matching firmware
1729          * patch file, it tries to open the default firmware patch file.
1730          * If no patch file is found, allow the device to operate without
1731          * a patch.
1732          */
1733         fw = btusb_setup_intel_get_fw(hdev, &ver);
1734         if (!fw)
1735                 goto complete;
1736         fw_ptr = fw->data;
1737
1738         /* Enable the manufacturer mode of the controller.
1739          * Only while this mode is enabled, the driver can download the
1740          * firmware patch data and configuration parameters.
1741          */
1742         err = btintel_enter_mfg(hdev);
1743         if (err) {
1744                 release_firmware(fw);
1745                 return err;
1746         }
1747
1748         disable_patch = 1;
1749
1750         /* The firmware data file consists of list of Intel specific HCI
1751          * commands and its expected events. The first byte indicates the
1752          * type of the message, either HCI command or HCI event.
1753          *
1754          * It reads the command and its expected event from the firmware file,
1755          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1756          * the returned event is compared with the event read from the firmware
1757          * file and it will continue until all the messages are downloaded to
1758          * the controller.
1759          *
1760          * Once the firmware patching is completed successfully,
1761          * the manufacturer mode is disabled with reset and activating the
1762          * downloaded patch.
1763          *
1764          * If the firmware patching fails, the manufacturer mode is
1765          * disabled with reset and deactivating the patch.
1766          *
1767          * If the default patch file is used, no reset is done when disabling
1768          * the manufacturer.
1769          */
1770         while (fw->size > fw_ptr - fw->data) {
1771                 int ret;
1772
1773                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1774                                                  &disable_patch);
1775                 if (ret < 0)
1776                         goto exit_mfg_deactivate;
1777         }
1778
1779         release_firmware(fw);
1780
1781         if (disable_patch)
1782                 goto exit_mfg_disable;
1783
1784         /* Patching completed successfully and disable the manufacturer mode
1785          * with reset and activate the downloaded firmware patches.
1786          */
1787         err = btintel_exit_mfg(hdev, true, true);
1788         if (err)
1789                 return err;
1790
1791         BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1792                 hdev->name);
1793
1794         goto complete;
1795
1796 exit_mfg_disable:
1797         /* Disable the manufacturer mode without reset */
1798         err = btintel_exit_mfg(hdev, false, false);
1799         if (err)
1800                 return err;
1801
1802         BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1803
1804         goto complete;
1805
1806 exit_mfg_deactivate:
1807         release_firmware(fw);
1808
1809         /* Patching failed. Disable the manufacturer mode with reset and
1810          * deactivate the downloaded firmware patches.
1811          */
1812         err = btintel_exit_mfg(hdev, true, false);
1813         if (err)
1814                 return err;
1815
1816         BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1817                 hdev->name);
1818
1819 complete:
1820         /* Set the event mask for Intel specific vendor events. This enables
1821          * a few extra events that are useful during general operation.
1822          */
1823         btintel_set_event_mask_mfg(hdev, false);
1824
1825         btintel_check_bdaddr(hdev);
1826         return 0;
1827 }
1828
1829 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
1830 {
1831         struct sk_buff *skb;
1832         struct hci_event_hdr *hdr;
1833         struct hci_ev_cmd_complete *evt;
1834
1835         skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_ATOMIC);
1836         if (!skb)
1837                 return -ENOMEM;
1838
1839         hdr = skb_put(skb, sizeof(*hdr));
1840         hdr->evt = HCI_EV_CMD_COMPLETE;
1841         hdr->plen = sizeof(*evt) + 1;
1842
1843         evt = skb_put(skb, sizeof(*evt));
1844         evt->ncmd = 0x01;
1845         evt->opcode = cpu_to_le16(opcode);
1846
1847         *(u8 *)skb_put(skb, 1) = 0x00;
1848
1849         hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
1850
1851         return hci_recv_frame(hdev, skb);
1852 }
1853
1854 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
1855                                  int count)
1856 {
1857         /* When the device is in bootloader mode, then it can send
1858          * events via the bulk endpoint. These events are treated the
1859          * same way as the ones received from the interrupt endpoint.
1860          */
1861         if (test_bit(BTUSB_BOOTLOADER, &data->flags))
1862                 return btusb_recv_intr(data, buffer, count);
1863
1864         return btusb_recv_bulk(data, buffer, count);
1865 }
1866
1867 static void btusb_intel_bootup(struct btusb_data *data, const void *ptr,
1868                                unsigned int len)
1869 {
1870         const struct intel_bootup *evt = ptr;
1871
1872         if (len != sizeof(*evt))
1873                 return;
1874
1875         if (test_and_clear_bit(BTUSB_BOOTING, &data->flags)) {
1876                 smp_mb__after_atomic();
1877                 wake_up_bit(&data->flags, BTUSB_BOOTING);
1878         }
1879 }
1880
1881 static void btusb_intel_secure_send_result(struct btusb_data *data,
1882                                            const void *ptr, unsigned int len)
1883 {
1884         const struct intel_secure_send_result *evt = ptr;
1885
1886         if (len != sizeof(*evt))
1887                 return;
1888
1889         if (evt->result)
1890                 set_bit(BTUSB_FIRMWARE_FAILED, &data->flags);
1891
1892         if (test_and_clear_bit(BTUSB_DOWNLOADING, &data->flags) &&
1893             test_bit(BTUSB_FIRMWARE_LOADED, &data->flags)) {
1894                 smp_mb__after_atomic();
1895                 wake_up_bit(&data->flags, BTUSB_DOWNLOADING);
1896         }
1897 }
1898
1899 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
1900 {
1901         struct btusb_data *data = hci_get_drvdata(hdev);
1902
1903         if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1904                 struct hci_event_hdr *hdr = (void *)skb->data;
1905
1906                 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
1907                     hdr->plen > 0) {
1908                         const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
1909                         unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
1910
1911                         switch (skb->data[2]) {
1912                         case 0x02:
1913                                 /* When switching to the operational firmware
1914                                  * the device sends a vendor specific event
1915                                  * indicating that the bootup completed.
1916                                  */
1917                                 btusb_intel_bootup(data, ptr, len);
1918                                 break;
1919                         case 0x06:
1920                                 /* When the firmware loading completes the
1921                                  * device sends out a vendor specific event
1922                                  * indicating the result of the firmware
1923                                  * loading.
1924                                  */
1925                                 btusb_intel_secure_send_result(data, ptr, len);
1926                                 break;
1927                         }
1928                 }
1929         }
1930
1931         return hci_recv_frame(hdev, skb);
1932 }
1933
1934 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
1935 {
1936         struct btusb_data *data = hci_get_drvdata(hdev);
1937         struct urb *urb;
1938
1939         BT_DBG("%s", hdev->name);
1940
1941         switch (hci_skb_pkt_type(skb)) {
1942         case HCI_COMMAND_PKT:
1943                 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1944                         struct hci_command_hdr *cmd = (void *)skb->data;
1945                         __u16 opcode = le16_to_cpu(cmd->opcode);
1946
1947                         /* When in bootloader mode and the command 0xfc09
1948                          * is received, it needs to be send down the
1949                          * bulk endpoint. So allocate a bulk URB instead.
1950                          */
1951                         if (opcode == 0xfc09)
1952                                 urb = alloc_bulk_urb(hdev, skb);
1953                         else
1954                                 urb = alloc_ctrl_urb(hdev, skb);
1955
1956                         /* When the 0xfc01 command is issued to boot into
1957                          * the operational firmware, it will actually not
1958                          * send a command complete event. To keep the flow
1959                          * control working inject that event here.
1960                          */
1961                         if (opcode == 0xfc01)
1962                                 inject_cmd_complete(hdev, opcode);
1963                 } else {
1964                         urb = alloc_ctrl_urb(hdev, skb);
1965                 }
1966                 if (IS_ERR(urb))
1967                         return PTR_ERR(urb);
1968
1969                 hdev->stat.cmd_tx++;
1970                 return submit_or_queue_tx_urb(hdev, urb);
1971
1972         case HCI_ACLDATA_PKT:
1973                 urb = alloc_bulk_urb(hdev, skb);
1974                 if (IS_ERR(urb))
1975                         return PTR_ERR(urb);
1976
1977                 hdev->stat.acl_tx++;
1978                 return submit_or_queue_tx_urb(hdev, urb);
1979
1980         case HCI_SCODATA_PKT:
1981                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1982                         return -ENODEV;
1983
1984                 urb = alloc_isoc_urb(hdev, skb);
1985                 if (IS_ERR(urb))
1986                         return PTR_ERR(urb);
1987
1988                 hdev->stat.sco_tx++;
1989                 return submit_tx_urb(hdev, urb);
1990         }
1991
1992         return -EILSEQ;
1993 }
1994
1995 static int btusb_setup_intel_new(struct hci_dev *hdev)
1996 {
1997         static const u8 reset_param[] = { 0x00, 0x01, 0x00, 0x01,
1998                                           0x00, 0x08, 0x04, 0x00 };
1999         struct btusb_data *data = hci_get_drvdata(hdev);
2000         struct sk_buff *skb;
2001         struct intel_version ver;
2002         struct intel_boot_params *params;
2003         const struct firmware *fw;
2004         const u8 *fw_ptr;
2005         u32 frag_len;
2006         char fwname[64];
2007         ktime_t calltime, delta, rettime;
2008         unsigned long long duration;
2009         int err;
2010
2011         BT_DBG("%s", hdev->name);
2012
2013         calltime = ktime_get();
2014
2015         /* Read the Intel version information to determine if the device
2016          * is in bootloader mode or if it already has operational firmware
2017          * loaded.
2018          */
2019         err = btintel_read_version(hdev, &ver);
2020         if (err)
2021                 return err;
2022
2023         /* The hardware platform number has a fixed value of 0x37 and
2024          * for now only accept this single value.
2025          */
2026         if (ver.hw_platform != 0x37) {
2027                 BT_ERR("%s: Unsupported Intel hardware platform (%u)",
2028                        hdev->name, ver.hw_platform);
2029                 return -EINVAL;
2030         }
2031
2032         /* Check for supported iBT hardware variants of this firmware
2033          * loading method.
2034          *
2035          * This check has been put in place to ensure correct forward
2036          * compatibility options when newer hardware variants come along.
2037          */
2038         switch (ver.hw_variant) {
2039         case 0x0b:      /* SfP */
2040         case 0x0c:      /* WsP */
2041         case 0x11:      /* JfP */
2042         case 0x12:      /* ThP */
2043                 break;
2044         default:
2045                 BT_ERR("%s: Unsupported Intel hardware variant (%u)",
2046                        hdev->name, ver.hw_variant);
2047                 return -EINVAL;
2048         }
2049
2050         btintel_version_info(hdev, &ver);
2051
2052         /* The firmware variant determines if the device is in bootloader
2053          * mode or is running operational firmware. The value 0x06 identifies
2054          * the bootloader and the value 0x23 identifies the operational
2055          * firmware.
2056          *
2057          * When the operational firmware is already present, then only
2058          * the check for valid Bluetooth device address is needed. This
2059          * determines if the device will be added as configured or
2060          * unconfigured controller.
2061          *
2062          * It is not possible to use the Secure Boot Parameters in this
2063          * case since that command is only available in bootloader mode.
2064          */
2065         if (ver.fw_variant == 0x23) {
2066                 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2067                 btintel_check_bdaddr(hdev);
2068                 return 0;
2069         }
2070
2071         /* If the device is not in bootloader mode, then the only possible
2072          * choice is to return an error and abort the device initialization.
2073          */
2074         if (ver.fw_variant != 0x06) {
2075                 BT_ERR("%s: Unsupported Intel firmware variant (%u)",
2076                        hdev->name, ver.fw_variant);
2077                 return -ENODEV;
2078         }
2079
2080         /* Read the secure boot parameters to identify the operating
2081          * details of the bootloader.
2082          */
2083         skb = __hci_cmd_sync(hdev, 0xfc0d, 0, NULL, HCI_INIT_TIMEOUT);
2084         if (IS_ERR(skb)) {
2085                 BT_ERR("%s: Reading Intel boot parameters failed (%ld)",
2086                        hdev->name, PTR_ERR(skb));
2087                 return PTR_ERR(skb);
2088         }
2089
2090         if (skb->len != sizeof(*params)) {
2091                 BT_ERR("%s: Intel boot parameters size mismatch", hdev->name);
2092                 kfree_skb(skb);
2093                 return -EILSEQ;
2094         }
2095
2096         params = (struct intel_boot_params *)skb->data;
2097
2098         BT_INFO("%s: Device revision is %u", hdev->name,
2099                 le16_to_cpu(params->dev_revid));
2100
2101         BT_INFO("%s: Secure boot is %s", hdev->name,
2102                 params->secure_boot ? "enabled" : "disabled");
2103
2104         BT_INFO("%s: OTP lock is %s", hdev->name,
2105                 params->otp_lock ? "enabled" : "disabled");
2106
2107         BT_INFO("%s: API lock is %s", hdev->name,
2108                 params->api_lock ? "enabled" : "disabled");
2109
2110         BT_INFO("%s: Debug lock is %s", hdev->name,
2111                 params->debug_lock ? "enabled" : "disabled");
2112
2113         BT_INFO("%s: Minimum firmware build %u week %u %u", hdev->name,
2114                 params->min_fw_build_nn, params->min_fw_build_cw,
2115                 2000 + params->min_fw_build_yy);
2116
2117         /* It is required that every single firmware fragment is acknowledged
2118          * with a command complete event. If the boot parameters indicate
2119          * that this bootloader does not send them, then abort the setup.
2120          */
2121         if (params->limited_cce != 0x00) {
2122                 BT_ERR("%s: Unsupported Intel firmware loading method (%u)",
2123                        hdev->name, params->limited_cce);
2124                 kfree_skb(skb);
2125                 return -EINVAL;
2126         }
2127
2128         /* If the OTP has no valid Bluetooth device address, then there will
2129          * also be no valid address for the operational firmware.
2130          */
2131         if (!bacmp(&params->otp_bdaddr, BDADDR_ANY)) {
2132                 BT_INFO("%s: No device address configured", hdev->name);
2133                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2134         }
2135
2136         /* With this Intel bootloader only the hardware variant and device
2137          * revision information are used to select the right firmware.
2138          *
2139          * The firmware filename is ibt-<hw_variant>-<dev_revid>.sfi.
2140          *
2141          * Currently the supported hardware variants are:
2142          *   11 (0x0b) for iBT3.0 (LnP/SfP)
2143          *   12 (0x0c) for iBT3.5 (WsP)
2144          *   17 (0x11) for iBT3.5 (JfP)
2145          *   18 (0x12) for iBT3.5 (ThP)
2146          */
2147         snprintf(fwname, sizeof(fwname), "intel/ibt-%u-%u.sfi",
2148                  le16_to_cpu(ver.hw_variant),
2149                  le16_to_cpu(params->dev_revid));
2150
2151         err = request_firmware(&fw, fwname, &hdev->dev);
2152         if (err < 0) {
2153                 BT_ERR("%s: Failed to load Intel firmware file (%d)",
2154                        hdev->name, err);
2155                 kfree_skb(skb);
2156                 return err;
2157         }
2158
2159         BT_INFO("%s: Found device firmware: %s", hdev->name, fwname);
2160
2161         /* Save the DDC file name for later use to apply once the firmware
2162          * downloading is done.
2163          */
2164         snprintf(fwname, sizeof(fwname), "intel/ibt-%u-%u.ddc",
2165                  le16_to_cpu(ver.hw_variant),
2166                  le16_to_cpu(params->dev_revid));
2167
2168         kfree_skb(skb);
2169
2170         if (fw->size < 644) {
2171                 BT_ERR("%s: Invalid size of firmware file (%zu)",
2172                        hdev->name, fw->size);
2173                 err = -EBADF;
2174                 goto done;
2175         }
2176
2177         set_bit(BTUSB_DOWNLOADING, &data->flags);
2178
2179         /* Start the firmware download transaction with the Init fragment
2180          * represented by the 128 bytes of CSS header.
2181          */
2182         err = btintel_secure_send(hdev, 0x00, 128, fw->data);
2183         if (err < 0) {
2184                 BT_ERR("%s: Failed to send firmware header (%d)",
2185                        hdev->name, err);
2186                 goto done;
2187         }
2188
2189         /* Send the 256 bytes of public key information from the firmware
2190          * as the PKey fragment.
2191          */
2192         err = btintel_secure_send(hdev, 0x03, 256, fw->data + 128);
2193         if (err < 0) {
2194                 BT_ERR("%s: Failed to send firmware public key (%d)",
2195                        hdev->name, err);
2196                 goto done;
2197         }
2198
2199         /* Send the 256 bytes of signature information from the firmware
2200          * as the Sign fragment.
2201          */
2202         err = btintel_secure_send(hdev, 0x02, 256, fw->data + 388);
2203         if (err < 0) {
2204                 BT_ERR("%s: Failed to send firmware signature (%d)",
2205                        hdev->name, err);
2206                 goto done;
2207         }
2208
2209         fw_ptr = fw->data + 644;
2210         frag_len = 0;
2211
2212         while (fw_ptr - fw->data < fw->size) {
2213                 struct hci_command_hdr *cmd = (void *)(fw_ptr + frag_len);
2214
2215                 frag_len += sizeof(*cmd) + cmd->plen;
2216
2217                 /* The parameter length of the secure send command requires
2218                  * a 4 byte alignment. It happens so that the firmware file
2219                  * contains proper Intel_NOP commands to align the fragments
2220                  * as needed.
2221                  *
2222                  * Send set of commands with 4 byte alignment from the
2223                  * firmware data buffer as a single Data fragement.
2224                  */
2225                 if (!(frag_len % 4)) {
2226                         err = btintel_secure_send(hdev, 0x01, frag_len, fw_ptr);
2227                         if (err < 0) {
2228                                 BT_ERR("%s: Failed to send firmware data (%d)",
2229                                        hdev->name, err);
2230                                 goto done;
2231                         }
2232
2233                         fw_ptr += frag_len;
2234                         frag_len = 0;
2235                 }
2236         }
2237
2238         set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2239
2240         BT_INFO("%s: Waiting for firmware download to complete", hdev->name);
2241
2242         /* Before switching the device into operational mode and with that
2243          * booting the loaded firmware, wait for the bootloader notification
2244          * that all fragments have been successfully received.
2245          *
2246          * When the event processing receives the notification, then the
2247          * BTUSB_DOWNLOADING flag will be cleared.
2248          *
2249          * The firmware loading should not take longer than 5 seconds
2250          * and thus just timeout if that happens and fail the setup
2251          * of this device.
2252          */
2253         err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
2254                                   TASK_INTERRUPTIBLE,
2255                                   msecs_to_jiffies(5000));
2256         if (err == -EINTR) {
2257                 BT_ERR("%s: Firmware loading interrupted", hdev->name);
2258                 goto done;
2259         }
2260
2261         if (err) {
2262                 BT_ERR("%s: Firmware loading timeout", hdev->name);
2263                 err = -ETIMEDOUT;
2264                 goto done;
2265         }
2266
2267         if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) {
2268                 BT_ERR("%s: Firmware loading failed", hdev->name);
2269                 err = -ENOEXEC;
2270                 goto done;
2271         }
2272
2273         rettime = ktime_get();
2274         delta = ktime_sub(rettime, calltime);
2275         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2276
2277         BT_INFO("%s: Firmware loaded in %llu usecs", hdev->name, duration);
2278
2279 done:
2280         release_firmware(fw);
2281
2282         if (err < 0)
2283                 return err;
2284
2285         calltime = ktime_get();
2286
2287         set_bit(BTUSB_BOOTING, &data->flags);
2288
2289         skb = __hci_cmd_sync(hdev, 0xfc01, sizeof(reset_param), reset_param,
2290                              HCI_INIT_TIMEOUT);
2291         if (IS_ERR(skb))
2292                 return PTR_ERR(skb);
2293
2294         kfree_skb(skb);
2295
2296         /* The bootloader will not indicate when the device is ready. This
2297          * is done by the operational firmware sending bootup notification.
2298          *
2299          * Booting into operational firmware should not take longer than
2300          * 1 second. However if that happens, then just fail the setup
2301          * since something went wrong.
2302          */
2303         BT_INFO("%s: Waiting for device to boot", hdev->name);
2304
2305         err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING,
2306                                   TASK_INTERRUPTIBLE,
2307                                   msecs_to_jiffies(1000));
2308
2309         if (err == -EINTR) {
2310                 BT_ERR("%s: Device boot interrupted", hdev->name);
2311                 return -EINTR;
2312         }
2313
2314         if (err) {
2315                 BT_ERR("%s: Device boot timeout", hdev->name);
2316                 return -ETIMEDOUT;
2317         }
2318
2319         rettime = ktime_get();
2320         delta = ktime_sub(rettime, calltime);
2321         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2322
2323         BT_INFO("%s: Device booted in %llu usecs", hdev->name, duration);
2324
2325         clear_bit(BTUSB_BOOTLOADER, &data->flags);
2326
2327         /* Once the device is running in operational mode, it needs to apply
2328          * the device configuration (DDC) parameters.
2329          *
2330          * The device can work without DDC parameters, so even if it fails
2331          * to load the file, no need to fail the setup.
2332          */
2333         btintel_load_ddc_config(hdev, fwname);
2334
2335         /* Set the event mask for Intel specific vendor events. This enables
2336          * a few extra events that are useful during general operation. It
2337          * does not enable any debugging related events.
2338          *
2339          * The device will function correctly without these events enabled
2340          * and thus no need to fail the setup.
2341          */
2342         btintel_set_event_mask(hdev, false);
2343
2344         return 0;
2345 }
2346
2347 static int btusb_shutdown_intel(struct hci_dev *hdev)
2348 {
2349         struct sk_buff *skb;
2350         long ret;
2351
2352         /* Some platforms have an issue with BT LED when the interface is
2353          * down or BT radio is turned off, which takes 5 seconds to BT LED
2354          * goes off. This command turns off the BT LED immediately.
2355          */
2356         skb = __hci_cmd_sync(hdev, 0xfc3f, 0, NULL, HCI_INIT_TIMEOUT);
2357         if (IS_ERR(skb)) {
2358                 ret = PTR_ERR(skb);
2359                 BT_ERR("%s: turning off Intel device LED failed (%ld)",
2360                        hdev->name, ret);
2361                 return ret;
2362         }
2363         kfree_skb(skb);
2364
2365         return 0;
2366 }
2367
2368 #ifdef CONFIG_PM
2369 /* Configure an out-of-band gpio as wake-up pin, if specified in device tree */
2370 static int marvell_config_oob_wake(struct hci_dev *hdev)
2371 {
2372         struct sk_buff *skb;
2373         struct btusb_data *data = hci_get_drvdata(hdev);
2374         struct device *dev = &data->udev->dev;
2375         u16 pin, gap, opcode;
2376         int ret;
2377         u8 cmd[5];
2378
2379         /* Move on if no wakeup pin specified */
2380         if (of_property_read_u16(dev->of_node, "marvell,wakeup-pin", &pin) ||
2381             of_property_read_u16(dev->of_node, "marvell,wakeup-gap-ms", &gap))
2382                 return 0;
2383
2384         /* Vendor specific command to configure a GPIO as wake-up pin */
2385         opcode = hci_opcode_pack(0x3F, 0x59);
2386         cmd[0] = opcode & 0xFF;
2387         cmd[1] = opcode >> 8;
2388         cmd[2] = 2; /* length of parameters that follow */
2389         cmd[3] = pin;
2390         cmd[4] = gap; /* time in ms, for which wakeup pin should be asserted */
2391
2392         skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
2393         if (!skb) {
2394                 bt_dev_err(hdev, "%s: No memory\n", __func__);
2395                 return -ENOMEM;
2396         }
2397
2398         skb_put_data(skb, cmd, sizeof(cmd));
2399         hci_skb_pkt_type(skb) = HCI_COMMAND_PKT;
2400
2401         ret = btusb_send_frame(hdev, skb);
2402         if (ret) {
2403                 bt_dev_err(hdev, "%s: configuration failed\n", __func__);
2404                 kfree_skb(skb);
2405                 return ret;
2406         }
2407
2408         return 0;
2409 }
2410 #endif
2411
2412 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
2413                                     const bdaddr_t *bdaddr)
2414 {
2415         struct sk_buff *skb;
2416         u8 buf[8];
2417         long ret;
2418
2419         buf[0] = 0xfe;
2420         buf[1] = sizeof(bdaddr_t);
2421         memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
2422
2423         skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2424         if (IS_ERR(skb)) {
2425                 ret = PTR_ERR(skb);
2426                 BT_ERR("%s: changing Marvell device address failed (%ld)",
2427                        hdev->name, ret);
2428                 return ret;
2429         }
2430         kfree_skb(skb);
2431
2432         return 0;
2433 }
2434
2435 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
2436                                     const bdaddr_t *bdaddr)
2437 {
2438         struct sk_buff *skb;
2439         u8 buf[10];
2440         long ret;
2441
2442         buf[0] = 0x01;
2443         buf[1] = 0x01;
2444         buf[2] = 0x00;
2445         buf[3] = sizeof(bdaddr_t);
2446         memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
2447
2448         skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2449         if (IS_ERR(skb)) {
2450                 ret = PTR_ERR(skb);
2451                 BT_ERR("%s: Change address command failed (%ld)",
2452                        hdev->name, ret);
2453                 return ret;
2454         }
2455         kfree_skb(skb);
2456
2457         return 0;
2458 }
2459
2460 #define QCA_DFU_PACKET_LEN      4096
2461
2462 #define QCA_GET_TARGET_VERSION  0x09
2463 #define QCA_CHECK_STATUS        0x05
2464 #define QCA_DFU_DOWNLOAD        0x01
2465
2466 #define QCA_SYSCFG_UPDATED      0x40
2467 #define QCA_PATCH_UPDATED       0x80
2468 #define QCA_DFU_TIMEOUT         3000
2469
2470 struct qca_version {
2471         __le32  rom_version;
2472         __le32  patch_version;
2473         __le32  ram_version;
2474         __le32  ref_clock;
2475         __u8    reserved[4];
2476 } __packed;
2477
2478 struct qca_rampatch_version {
2479         __le16  rom_version;
2480         __le16  patch_version;
2481 } __packed;
2482
2483 struct qca_device_info {
2484         u32     rom_version;
2485         u8      rampatch_hdr;   /* length of header in rampatch */
2486         u8      nvm_hdr;        /* length of header in NVM */
2487         u8      ver_offset;     /* offset of version structure in rampatch */
2488 };
2489
2490 static const struct qca_device_info qca_devices_table[] = {
2491         { 0x00000100, 20, 4, 10 }, /* Rome 1.0 */
2492         { 0x00000101, 20, 4, 10 }, /* Rome 1.1 */
2493         { 0x00000200, 28, 4, 18 }, /* Rome 2.0 */
2494         { 0x00000201, 28, 4, 18 }, /* Rome 2.1 */
2495         { 0x00000300, 28, 4, 18 }, /* Rome 3.0 */
2496         { 0x00000302, 28, 4, 18 }, /* Rome 3.2 */
2497 };
2498
2499 static int btusb_qca_send_vendor_req(struct hci_dev *hdev, u8 request,
2500                                      void *data, u16 size)
2501 {
2502         struct btusb_data *btdata = hci_get_drvdata(hdev);
2503         struct usb_device *udev = btdata->udev;
2504         int pipe, err;
2505         u8 *buf;
2506
2507         buf = kmalloc(size, GFP_KERNEL);
2508         if (!buf)
2509                 return -ENOMEM;
2510
2511         /* Found some of USB hosts have IOT issues with ours so that we should
2512          * not wait until HCI layer is ready.
2513          */
2514         pipe = usb_rcvctrlpipe(udev, 0);
2515         err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
2516                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2517         if (err < 0) {
2518                 BT_ERR("%s: Failed to access otp area (%d)", hdev->name, err);
2519                 goto done;
2520         }
2521
2522         memcpy(data, buf, size);
2523
2524 done:
2525         kfree(buf);
2526
2527         return err;
2528 }
2529
2530 static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
2531                                        const struct firmware *firmware,
2532                                        size_t hdr_size)
2533 {
2534         struct btusb_data *btdata = hci_get_drvdata(hdev);
2535         struct usb_device *udev = btdata->udev;
2536         size_t count, size, sent = 0;
2537         int pipe, len, err;
2538         u8 *buf;
2539
2540         buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
2541         if (!buf)
2542                 return -ENOMEM;
2543
2544         count = firmware->size;
2545
2546         size = min_t(size_t, count, hdr_size);
2547         memcpy(buf, firmware->data, size);
2548
2549         /* USB patches should go down to controller through USB path
2550          * because binary format fits to go down through USB channel.
2551          * USB control path is for patching headers and USB bulk is for
2552          * patch body.
2553          */
2554         pipe = usb_sndctrlpipe(udev, 0);
2555         err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
2556                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2557         if (err < 0) {
2558                 BT_ERR("%s: Failed to send headers (%d)", hdev->name, err);
2559                 goto done;
2560         }
2561
2562         sent += size;
2563         count -= size;
2564
2565         while (count) {
2566                 size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
2567
2568                 memcpy(buf, firmware->data + sent, size);
2569
2570                 pipe = usb_sndbulkpipe(udev, 0x02);
2571                 err = usb_bulk_msg(udev, pipe, buf, size, &len,
2572                                    QCA_DFU_TIMEOUT);
2573                 if (err < 0) {
2574                         BT_ERR("%s: Failed to send body at %zd of %zd (%d)",
2575                                hdev->name, sent, firmware->size, err);
2576                         break;
2577                 }
2578
2579                 if (size != len) {
2580                         BT_ERR("%s: Failed to get bulk buffer", hdev->name);
2581                         err = -EILSEQ;
2582                         break;
2583                 }
2584
2585                 sent  += size;
2586                 count -= size;
2587         }
2588
2589 done:
2590         kfree(buf);
2591         return err;
2592 }
2593
2594 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
2595                                          struct qca_version *ver,
2596                                          const struct qca_device_info *info)
2597 {
2598         struct qca_rampatch_version *rver;
2599         const struct firmware *fw;
2600         u32 ver_rom, ver_patch;
2601         u16 rver_rom, rver_patch;
2602         char fwname[64];
2603         int err;
2604
2605         ver_rom = le32_to_cpu(ver->rom_version);
2606         ver_patch = le32_to_cpu(ver->patch_version);
2607
2608         snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom);
2609
2610         err = request_firmware(&fw, fwname, &hdev->dev);
2611         if (err) {
2612                 BT_ERR("%s: failed to request rampatch file: %s (%d)",
2613                        hdev->name, fwname, err);
2614                 return err;
2615         }
2616
2617         BT_INFO("%s: using rampatch file: %s", hdev->name, fwname);
2618
2619         rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
2620         rver_rom = le16_to_cpu(rver->rom_version);
2621         rver_patch = le16_to_cpu(rver->patch_version);
2622
2623         BT_INFO("%s: QCA: patch rome 0x%x build 0x%x, firmware rome 0x%x "
2624                 "build 0x%x", hdev->name, rver_rom, rver_patch, ver_rom,
2625                 ver_patch);
2626
2627         if (rver_rom != ver_rom || rver_patch <= ver_patch) {
2628                 BT_ERR("%s: rampatch file version did not match with firmware",
2629                        hdev->name);
2630                 err = -EINVAL;
2631                 goto done;
2632         }
2633
2634         err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
2635
2636 done:
2637         release_firmware(fw);
2638
2639         return err;
2640 }
2641
2642 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
2643                                     struct qca_version *ver,
2644                                     const struct qca_device_info *info)
2645 {
2646         const struct firmware *fw;
2647         char fwname[64];
2648         int err;
2649
2650         snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x.bin",
2651                  le32_to_cpu(ver->rom_version));
2652
2653         err = request_firmware(&fw, fwname, &hdev->dev);
2654         if (err) {
2655                 BT_ERR("%s: failed to request NVM file: %s (%d)",
2656                        hdev->name, fwname, err);
2657                 return err;
2658         }
2659
2660         BT_INFO("%s: using NVM file: %s", hdev->name, fwname);
2661
2662         err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
2663
2664         release_firmware(fw);
2665
2666         return err;
2667 }
2668
2669 static int btusb_setup_qca(struct hci_dev *hdev)
2670 {
2671         const struct qca_device_info *info = NULL;
2672         struct qca_version ver;
2673         u32 ver_rom;
2674         u8 status;
2675         int i, err;
2676
2677         err = btusb_qca_send_vendor_req(hdev, QCA_GET_TARGET_VERSION, &ver,
2678                                         sizeof(ver));
2679         if (err < 0)
2680                 return err;
2681
2682         ver_rom = le32_to_cpu(ver.rom_version);
2683         for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
2684                 if (ver_rom == qca_devices_table[i].rom_version)
2685                         info = &qca_devices_table[i];
2686         }
2687         if (!info) {
2688                 BT_ERR("%s: don't support firmware rome 0x%x", hdev->name,
2689                        ver_rom);
2690                 return -ENODEV;
2691         }
2692
2693         err = btusb_qca_send_vendor_req(hdev, QCA_CHECK_STATUS, &status,
2694                                         sizeof(status));
2695         if (err < 0)
2696                 return err;
2697
2698         if (!(status & QCA_PATCH_UPDATED)) {
2699                 err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
2700                 if (err < 0)
2701                         return err;
2702         }
2703
2704         if (!(status & QCA_SYSCFG_UPDATED)) {
2705                 err = btusb_setup_qca_load_nvm(hdev, &ver, info);
2706                 if (err < 0)
2707                         return err;
2708         }
2709
2710         return 0;
2711 }
2712
2713 #ifdef CONFIG_BT_HCIBTUSB_BCM
2714 static inline int __set_diag_interface(struct hci_dev *hdev)
2715 {
2716         struct btusb_data *data = hci_get_drvdata(hdev);
2717         struct usb_interface *intf = data->diag;
2718         int i;
2719
2720         if (!data->diag)
2721                 return -ENODEV;
2722
2723         data->diag_tx_ep = NULL;
2724         data->diag_rx_ep = NULL;
2725
2726         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2727                 struct usb_endpoint_descriptor *ep_desc;
2728
2729                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2730
2731                 if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
2732                         data->diag_tx_ep = ep_desc;
2733                         continue;
2734                 }
2735
2736                 if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
2737                         data->diag_rx_ep = ep_desc;
2738                         continue;
2739                 }
2740         }
2741
2742         if (!data->diag_tx_ep || !data->diag_rx_ep) {
2743                 BT_ERR("%s invalid diagnostic descriptors", hdev->name);
2744                 return -ENODEV;
2745         }
2746
2747         return 0;
2748 }
2749
2750 static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable)
2751 {
2752         struct btusb_data *data = hci_get_drvdata(hdev);
2753         struct sk_buff *skb;
2754         struct urb *urb;
2755         unsigned int pipe;
2756
2757         if (!data->diag_tx_ep)
2758                 return ERR_PTR(-ENODEV);
2759
2760         urb = usb_alloc_urb(0, GFP_KERNEL);
2761         if (!urb)
2762                 return ERR_PTR(-ENOMEM);
2763
2764         skb = bt_skb_alloc(2, GFP_KERNEL);
2765         if (!skb) {
2766                 usb_free_urb(urb);
2767                 return ERR_PTR(-ENOMEM);
2768         }
2769
2770         *(u8 *)skb_put(skb, 1) = 0xf0;
2771         *(u8 *)skb_put(skb, 1) = enable;
2772
2773         pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress);
2774
2775         usb_fill_bulk_urb(urb, data->udev, pipe,
2776                           skb->data, skb->len, btusb_tx_complete, skb);
2777
2778         skb->dev = (void *)hdev;
2779
2780         return urb;
2781 }
2782
2783 static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable)
2784 {
2785         struct btusb_data *data = hci_get_drvdata(hdev);
2786         struct urb *urb;
2787
2788         if (!data->diag)
2789                 return -ENODEV;
2790
2791         if (!test_bit(HCI_RUNNING, &hdev->flags))
2792                 return -ENETDOWN;
2793
2794         urb = alloc_diag_urb(hdev, enable);
2795         if (IS_ERR(urb))
2796                 return PTR_ERR(urb);
2797
2798         return submit_or_queue_tx_urb(hdev, urb);
2799 }
2800 #endif
2801
2802 #ifdef CONFIG_PM
2803 static irqreturn_t btusb_oob_wake_handler(int irq, void *priv)
2804 {
2805         struct btusb_data *data = priv;
2806
2807         pm_wakeup_event(&data->udev->dev, 0);
2808         pm_system_wakeup();
2809
2810         /* Disable only if not already disabled (keep it balanced) */
2811         if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
2812                 disable_irq_nosync(irq);
2813                 disable_irq_wake(irq);
2814         }
2815         return IRQ_HANDLED;
2816 }
2817
2818 static const struct of_device_id btusb_match_table[] = {
2819         { .compatible = "usb1286,204e" },
2820         { }
2821 };
2822 MODULE_DEVICE_TABLE(of, btusb_match_table);
2823
2824 /* Use an oob wakeup pin? */
2825 static int btusb_config_oob_wake(struct hci_dev *hdev)
2826 {
2827         struct btusb_data *data = hci_get_drvdata(hdev);
2828         struct device *dev = &data->udev->dev;
2829         int irq, ret;
2830
2831         clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
2832
2833         if (!of_match_device(btusb_match_table, dev))
2834                 return 0;
2835
2836         /* Move on if no IRQ specified */
2837         irq = of_irq_get_byname(dev->of_node, "wakeup");
2838         if (irq <= 0) {
2839                 bt_dev_dbg(hdev, "%s: no OOB Wakeup IRQ in DT", __func__);
2840                 return 0;
2841         }
2842
2843         ret = devm_request_irq(&hdev->dev, irq, btusb_oob_wake_handler,
2844                                0, "OOB Wake-on-BT", data);
2845         if (ret) {
2846                 bt_dev_err(hdev, "%s: IRQ request failed", __func__);
2847                 return ret;
2848         }
2849
2850         ret = device_init_wakeup(dev, true);
2851         if (ret) {
2852                 bt_dev_err(hdev, "%s: failed to init_wakeup", __func__);
2853                 return ret;
2854         }
2855
2856         data->oob_wake_irq = irq;
2857         disable_irq(irq);
2858         bt_dev_info(hdev, "OOB Wake-on-BT configured at IRQ %u", irq);
2859         return 0;
2860 }
2861 #endif
2862
2863 static int btusb_probe(struct usb_interface *intf,
2864                        const struct usb_device_id *id)
2865 {
2866         struct usb_endpoint_descriptor *ep_desc;
2867         struct btusb_data *data;
2868         struct hci_dev *hdev;
2869         unsigned ifnum_base;
2870         int i, err;
2871
2872         BT_DBG("intf %p id %p", intf, id);
2873
2874         /* interface numbers are hardcoded in the spec */
2875         if (intf->cur_altsetting->desc.bInterfaceNumber != 0) {
2876                 if (!(id->driver_info & BTUSB_IFNUM_2))
2877                         return -ENODEV;
2878                 if (intf->cur_altsetting->desc.bInterfaceNumber != 2)
2879                         return -ENODEV;
2880         }
2881
2882         ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber;
2883
2884         if (!id->driver_info) {
2885                 const struct usb_device_id *match;
2886
2887                 match = usb_match_id(intf, blacklist_table);
2888                 if (match)
2889                         id = match;
2890         }
2891
2892         if (id->driver_info == BTUSB_IGNORE)
2893                 return -ENODEV;
2894
2895         if (id->driver_info & BTUSB_ATH3012) {
2896                 struct usb_device *udev = interface_to_usbdev(intf);
2897
2898                 /* Old firmware would otherwise let ath3k driver load
2899                  * patch and sysconfig files */
2900                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
2901                         return -ENODEV;
2902         }
2903
2904         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
2905         if (!data)
2906                 return -ENOMEM;
2907
2908         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2909                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2910
2911                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
2912                         data->intr_ep = ep_desc;
2913                         continue;
2914                 }
2915
2916                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
2917                         data->bulk_tx_ep = ep_desc;
2918                         continue;
2919                 }
2920
2921                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
2922                         data->bulk_rx_ep = ep_desc;
2923                         continue;
2924                 }
2925         }
2926
2927         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
2928                 return -ENODEV;
2929
2930         if (id->driver_info & BTUSB_AMP) {
2931                 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
2932                 data->cmdreq = 0x2b;
2933         } else {
2934                 data->cmdreq_type = USB_TYPE_CLASS;
2935                 data->cmdreq = 0x00;
2936         }
2937
2938         data->udev = interface_to_usbdev(intf);
2939         data->intf = intf;
2940
2941         INIT_WORK(&data->work, btusb_work);
2942         INIT_WORK(&data->waker, btusb_waker);
2943         init_usb_anchor(&data->deferred);
2944         init_usb_anchor(&data->tx_anchor);
2945         spin_lock_init(&data->txlock);
2946
2947         init_usb_anchor(&data->intr_anchor);
2948         init_usb_anchor(&data->bulk_anchor);
2949         init_usb_anchor(&data->isoc_anchor);
2950         init_usb_anchor(&data->diag_anchor);
2951         spin_lock_init(&data->rxlock);
2952
2953         if (id->driver_info & BTUSB_INTEL_NEW) {
2954                 data->recv_event = btusb_recv_event_intel;
2955                 data->recv_bulk = btusb_recv_bulk_intel;
2956                 set_bit(BTUSB_BOOTLOADER, &data->flags);
2957         } else {
2958                 data->recv_event = hci_recv_frame;
2959                 data->recv_bulk = btusb_recv_bulk;
2960         }
2961
2962         hdev = hci_alloc_dev();
2963         if (!hdev)
2964                 return -ENOMEM;
2965
2966         hdev->bus = HCI_USB;
2967         hci_set_drvdata(hdev, data);
2968
2969         if (id->driver_info & BTUSB_AMP)
2970                 hdev->dev_type = HCI_AMP;
2971         else
2972                 hdev->dev_type = HCI_PRIMARY;
2973
2974         data->hdev = hdev;
2975
2976         SET_HCIDEV_DEV(hdev, &intf->dev);
2977
2978         hdev->open   = btusb_open;
2979         hdev->close  = btusb_close;
2980         hdev->flush  = btusb_flush;
2981         hdev->send   = btusb_send_frame;
2982         hdev->notify = btusb_notify;
2983
2984 #ifdef CONFIG_PM
2985         err = btusb_config_oob_wake(hdev);
2986         if (err)
2987                 goto out_free_dev;
2988
2989         /* Marvell devices may need a specific chip configuration */
2990         if (id->driver_info & BTUSB_MARVELL && data->oob_wake_irq) {
2991                 err = marvell_config_oob_wake(hdev);
2992                 if (err)
2993                         goto out_free_dev;
2994         }
2995 #endif
2996         if (id->driver_info & BTUSB_CW6622)
2997                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
2998
2999         if (id->driver_info & BTUSB_BCM2045)
3000                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
3001
3002         if (id->driver_info & BTUSB_BCM92035)
3003                 hdev->setup = btusb_setup_bcm92035;
3004
3005 #ifdef CONFIG_BT_HCIBTUSB_BCM
3006         if (id->driver_info & BTUSB_BCM_PATCHRAM) {
3007                 hdev->manufacturer = 15;
3008                 hdev->setup = btbcm_setup_patchram;
3009                 hdev->set_diag = btusb_bcm_set_diag;
3010                 hdev->set_bdaddr = btbcm_set_bdaddr;
3011
3012                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
3013                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
3014         }
3015
3016         if (id->driver_info & BTUSB_BCM_APPLE) {
3017                 hdev->manufacturer = 15;
3018                 hdev->setup = btbcm_setup_apple;
3019                 hdev->set_diag = btusb_bcm_set_diag;
3020
3021                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
3022                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
3023         }
3024 #endif
3025
3026         if (id->driver_info & BTUSB_INTEL) {
3027                 hdev->manufacturer = 2;
3028                 hdev->setup = btusb_setup_intel;
3029                 hdev->shutdown = btusb_shutdown_intel;
3030                 hdev->set_diag = btintel_set_diag_mfg;
3031                 hdev->set_bdaddr = btintel_set_bdaddr;
3032                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3033                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3034                 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
3035         }
3036
3037         if (id->driver_info & BTUSB_INTEL_NEW) {
3038                 hdev->manufacturer = 2;
3039                 hdev->send = btusb_send_frame_intel;
3040                 hdev->setup = btusb_setup_intel_new;
3041                 hdev->hw_error = btintel_hw_error;
3042                 hdev->set_diag = btintel_set_diag;
3043                 hdev->set_bdaddr = btintel_set_bdaddr;
3044                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3045                 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
3046         }
3047
3048         if (id->driver_info & BTUSB_MARVELL)
3049                 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
3050
3051         if (id->driver_info & BTUSB_SWAVE) {
3052                 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
3053                 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
3054         }
3055
3056         if (id->driver_info & BTUSB_INTEL_BOOT) {
3057                 hdev->manufacturer = 2;
3058                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3059         }
3060
3061         if (id->driver_info & BTUSB_ATH3012) {
3062                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
3063                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3064                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3065         }
3066
3067         if (id->driver_info & BTUSB_QCA_ROME) {
3068                 data->setup_on_usb = btusb_setup_qca;
3069                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
3070         }
3071
3072 #ifdef CONFIG_BT_HCIBTUSB_RTL
3073         if (id->driver_info & BTUSB_REALTEK) {
3074                 hdev->setup = btrtl_setup_realtek;
3075
3076                 /* Realtek devices lose their updated firmware over suspend,
3077                  * but the USB hub doesn't notice any status change.
3078                  * Explicitly request a device reset on resume.
3079                  */
3080                 set_bit(BTUSB_RESET_RESUME, &data->flags);
3081         }
3082 #endif
3083
3084         if (id->driver_info & BTUSB_AMP) {
3085                 /* AMP controllers do not support SCO packets */
3086                 data->isoc = NULL;
3087         } else {
3088                 /* Interface orders are hardcoded in the specification */
3089                 data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1);
3090         }
3091
3092         if (!reset)
3093                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3094
3095         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
3096                 if (!disable_scofix)
3097                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
3098         }
3099
3100         if (id->driver_info & BTUSB_BROKEN_ISOC)
3101                 data->isoc = NULL;
3102
3103         if (id->driver_info & BTUSB_DIGIANSWER) {
3104                 data->cmdreq_type = USB_TYPE_VENDOR;
3105                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3106         }
3107
3108         if (id->driver_info & BTUSB_CSR) {
3109                 struct usb_device *udev = data->udev;
3110                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
3111
3112                 /* Old firmware would otherwise execute USB reset */
3113                 if (bcdDevice < 0x117)
3114                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3115
3116                 /* Fake CSR devices with broken commands */
3117                 if (bcdDevice <= 0x100 || bcdDevice == 0x134)
3118                         hdev->setup = btusb_setup_csr;
3119
3120                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3121         }
3122
3123         if (id->driver_info & BTUSB_SNIFFER) {
3124                 struct usb_device *udev = data->udev;
3125
3126                 /* New sniffer firmware has crippled HCI interface */
3127                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
3128                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3129         }
3130
3131         if (id->driver_info & BTUSB_INTEL_BOOT) {
3132                 /* A bug in the bootloader causes that interrupt interface is
3133                  * only enabled after receiving SetInterface(0, AltSetting=0).
3134                  */
3135                 err = usb_set_interface(data->udev, 0, 0);
3136                 if (err < 0) {
3137                         BT_ERR("failed to set interface 0, alt 0 %d", err);
3138                         goto out_free_dev;
3139                 }
3140         }
3141
3142         if (data->isoc) {
3143                 err = usb_driver_claim_interface(&btusb_driver,
3144                                                  data->isoc, data);
3145                 if (err < 0)
3146                         goto out_free_dev;
3147         }
3148
3149 #ifdef CONFIG_BT_HCIBTUSB_BCM
3150         if (data->diag) {
3151                 if (!usb_driver_claim_interface(&btusb_driver,
3152                                                 data->diag, data))
3153                         __set_diag_interface(hdev);
3154                 else
3155                         data->diag = NULL;
3156         }
3157 #endif
3158
3159         err = hci_register_dev(hdev);
3160         if (err < 0)
3161                 goto out_free_dev;
3162
3163         usb_set_intfdata(intf, data);
3164
3165         return 0;
3166
3167 out_free_dev:
3168         hci_free_dev(hdev);
3169         return err;
3170 }
3171
3172 static void btusb_disconnect(struct usb_interface *intf)
3173 {
3174         struct btusb_data *data = usb_get_intfdata(intf);
3175         struct hci_dev *hdev;
3176
3177         BT_DBG("intf %p", intf);
3178
3179         if (!data)
3180                 return;
3181
3182         hdev = data->hdev;
3183         usb_set_intfdata(data->intf, NULL);
3184
3185         if (data->isoc)
3186                 usb_set_intfdata(data->isoc, NULL);
3187
3188         if (data->diag)
3189                 usb_set_intfdata(data->diag, NULL);
3190
3191         hci_unregister_dev(hdev);
3192
3193         if (intf == data->intf) {
3194                 if (data->isoc)
3195                         usb_driver_release_interface(&btusb_driver, data->isoc);
3196                 if (data->diag)
3197                         usb_driver_release_interface(&btusb_driver, data->diag);
3198         } else if (intf == data->isoc) {
3199                 if (data->diag)
3200                         usb_driver_release_interface(&btusb_driver, data->diag);
3201                 usb_driver_release_interface(&btusb_driver, data->intf);
3202         } else if (intf == data->diag) {
3203                 usb_driver_release_interface(&btusb_driver, data->intf);
3204                 if (data->isoc)
3205                         usb_driver_release_interface(&btusb_driver, data->isoc);
3206         }
3207
3208         if (data->oob_wake_irq)
3209                 device_init_wakeup(&data->udev->dev, false);
3210
3211         hci_free_dev(hdev);
3212 }
3213
3214 #ifdef CONFIG_PM
3215 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
3216 {
3217         struct btusb_data *data = usb_get_intfdata(intf);
3218
3219         BT_DBG("intf %p", intf);
3220
3221         if (data->suspend_count++)
3222                 return 0;
3223
3224         spin_lock_irq(&data->txlock);
3225         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
3226                 set_bit(BTUSB_SUSPENDING, &data->flags);
3227                 spin_unlock_irq(&data->txlock);
3228         } else {
3229                 spin_unlock_irq(&data->txlock);
3230                 data->suspend_count--;
3231                 return -EBUSY;
3232         }
3233
3234         cancel_work_sync(&data->work);
3235
3236         btusb_stop_traffic(data);
3237         usb_kill_anchored_urbs(&data->tx_anchor);
3238
3239         if (data->oob_wake_irq && device_may_wakeup(&data->udev->dev)) {
3240                 set_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
3241                 enable_irq_wake(data->oob_wake_irq);
3242                 enable_irq(data->oob_wake_irq);
3243         }
3244
3245         /* Optionally request a device reset on resume, but only when
3246          * wakeups are disabled. If wakeups are enabled we assume the
3247          * device will stay powered up throughout suspend.
3248          */
3249         if (test_bit(BTUSB_RESET_RESUME, &data->flags) &&
3250             !device_may_wakeup(&data->udev->dev))
3251                 data->udev->reset_resume = 1;
3252
3253         return 0;
3254 }
3255
3256 static void play_deferred(struct btusb_data *data)
3257 {
3258         struct urb *urb;
3259         int err;
3260
3261         while ((urb = usb_get_from_anchor(&data->deferred))) {
3262                 err = usb_submit_urb(urb, GFP_ATOMIC);
3263                 if (err < 0)
3264                         break;
3265
3266                 data->tx_in_flight++;
3267         }
3268         usb_scuttle_anchored_urbs(&data->deferred);
3269 }
3270
3271 static int btusb_resume(struct usb_interface *intf)
3272 {
3273         struct btusb_data *data = usb_get_intfdata(intf);
3274         struct hci_dev *hdev = data->hdev;
3275         int err = 0;
3276
3277         BT_DBG("intf %p", intf);
3278
3279         if (--data->suspend_count)
3280                 return 0;
3281
3282         /* Disable only if not already disabled (keep it balanced) */
3283         if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
3284                 disable_irq(data->oob_wake_irq);
3285                 disable_irq_wake(data->oob_wake_irq);
3286         }
3287
3288         if (!test_bit(HCI_RUNNING, &hdev->flags))
3289                 goto done;
3290
3291         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
3292                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
3293                 if (err < 0) {
3294                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
3295                         goto failed;
3296                 }
3297         }
3298
3299         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
3300                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
3301                 if (err < 0) {
3302                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
3303                         goto failed;
3304                 }
3305
3306                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
3307         }
3308
3309         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
3310                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
3311                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
3312                 else
3313                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
3314         }
3315
3316         spin_lock_irq(&data->txlock);
3317         play_deferred(data);
3318         clear_bit(BTUSB_SUSPENDING, &data->flags);
3319         spin_unlock_irq(&data->txlock);
3320         schedule_work(&data->work);
3321
3322         return 0;
3323
3324 failed:
3325         usb_scuttle_anchored_urbs(&data->deferred);
3326 done:
3327         spin_lock_irq(&data->txlock);
3328         clear_bit(BTUSB_SUSPENDING, &data->flags);
3329         spin_unlock_irq(&data->txlock);
3330
3331         return err;
3332 }
3333 #endif
3334
3335 static struct usb_driver btusb_driver = {
3336         .name           = "btusb",
3337         .probe          = btusb_probe,
3338         .disconnect     = btusb_disconnect,
3339 #ifdef CONFIG_PM
3340         .suspend        = btusb_suspend,
3341         .resume         = btusb_resume,
3342 #endif
3343         .id_table       = btusb_table,
3344         .supports_autosuspend = 1,
3345         .disable_hub_initiated_lpm = 1,
3346 };
3347
3348 module_usb_driver(btusb_driver);
3349
3350 module_param(disable_scofix, bool, 0644);
3351 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
3352
3353 module_param(force_scofix, bool, 0644);
3354 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
3355
3356 module_param(reset, bool, 0644);
3357 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
3358
3359 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
3360 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
3361 MODULE_VERSION(VERSION);
3362 MODULE_LICENSE("GPL");