drivers/bluetooth/btusb.c

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