drivers/bluetooth/btusb.c

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