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