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