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
  66 static const struct usb_device_id btusb_table[] = {
  67         /* Generic Bluetooth USB device */
  68         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  69
  70         /* Generic Bluetooth AMP device */
  71         { USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP },
  72
  73         /* Generic Bluetooth USB interface */
  74         { USB_INTERFACE_INFO(0xe0, 0x01, 0x01) },
  75
  76         /* Apple-specific (Broadcom) devices */
  77         { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01),
  78           .driver_info = BTUSB_BCM_APPLE | BTUSB_IFNUM_2 },
  79
  80         /* MediaTek MT76x0E */
  81         { USB_DEVICE(0x0e8d, 0x763f) },
  82
  83         /* Broadcom SoftSailing reporting vendor specific */
  84         { USB_DEVICE(0x0a5c, 0x21e1) },
  85
  86         /* Apple MacBookPro 7,1 */
  87         { USB_DEVICE(0x05ac, 0x8213) },
  88
  89         /* Apple iMac11,1 */
  90         { USB_DEVICE(0x05ac, 0x8215) },
  91
  92         /* Apple MacBookPro6,2 */
  93         { USB_DEVICE(0x05ac, 0x8218) },
  94
  95         /* Apple MacBookAir3,1, MacBookAir3,2 */
  96         { USB_DEVICE(0x05ac, 0x821b) },
  97
  98         /* Apple MacBookAir4,1 */
  99         { USB_DEVICE(0x05ac, 0x821f) },
 100
 101         /* Apple MacBookPro8,2 */
 102         { USB_DEVICE(0x05ac, 0x821a) },
 103
 104         /* Apple MacMini5,1 */
 105         { USB_DEVICE(0x05ac, 0x8281) },
 106
 107         /* AVM BlueFRITZ! USB v2.0 */
 108         { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE },
 109
 110         /* Bluetooth Ultraport Module from IBM */
 111         { USB_DEVICE(0x04bf, 0x030a) },
 112
 113         /* ALPS Modules with non-standard id */
 114         { USB_DEVICE(0x044e, 0x3001) },
 115         { USB_DEVICE(0x044e, 0x3002) },
 116
 117         /* Ericsson with non-standard id */
 118         { USB_DEVICE(0x0bdb, 0x1002) },
 119
 120         /* Canyon CN-BTU1 with HID interfaces */
 121         { USB_DEVICE(0x0c10, 0x0000) },
 122
 123         /* Broadcom BCM20702A0 */
 124         { USB_DEVICE(0x413c, 0x8197) },
 125
 126         /* Broadcom BCM20702B0 (Dynex/Insignia) */
 127         { USB_DEVICE(0x19ff, 0x0239), .driver_info = BTUSB_BCM_PATCHRAM },
 128
 129         /* Broadcom BCM43142A0 (Foxconn/Lenovo) */
 130         { USB_DEVICE(0x105b, 0xe065), .driver_info = BTUSB_BCM_PATCHRAM },
 131
 132         /* Foxconn - Hon Hai */
 133         { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01),
 134           .driver_info = BTUSB_BCM_PATCHRAM },
 135
 136         /* Lite-On Technology - Broadcom based */
 137         { USB_VENDOR_AND_INTERFACE_INFO(0x04ca, 0xff, 0x01, 0x01),
 138           .driver_info = BTUSB_BCM_PATCHRAM },
 139
 140         /* Broadcom devices with vendor specific id */
 141         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
 142           .driver_info = BTUSB_BCM_PATCHRAM },
 143
 144         /* ASUSTek Computer - Broadcom based */
 145         { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01),
 146           .driver_info = BTUSB_BCM_PATCHRAM },
 147
 148         /* Belkin F8065bf - Broadcom based */
 149         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01),
 150           .driver_info = BTUSB_BCM_PATCHRAM },
 151
 152         /* IMC Networks - Broadcom based */
 153         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01),
 154           .driver_info = BTUSB_BCM_PATCHRAM },
 155
 156         /* Toshiba Corp - Broadcom based */
 157         { USB_VENDOR_AND_INTERFACE_INFO(0x0930, 0xff, 0x01, 0x01),
 158           .driver_info = BTUSB_BCM_PATCHRAM },
 159
 160         /* Intel Bluetooth USB Bootloader (RAM module) */
 161         { USB_DEVICE(0x8087, 0x0a5a),
 162           .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
 163
 164         { }     /* Terminating entry */
 165 };
 166
 167 MODULE_DEVICE_TABLE(usb, btusb_table);
 168
 169 static const struct usb_device_id blacklist_table[] = {
 170         /* CSR BlueCore devices */
 171         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 172
 173         /* Broadcom BCM2033 without firmware */
 174         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 175
 176         /* Broadcom BCM2045 devices */
 177         { USB_DEVICE(0x0a5c, 0x2045), .driver_info = BTUSB_BCM2045 },
 178
 179         /* Atheros 3011 with sflash firmware */
 180         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 181         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 182         { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE },
 183         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 184         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 185         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 186         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 187
 188         /* Atheros AR9285 Malbec with sflash firmware */
 189         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 190
 191         /* Atheros 3012 with sflash firmware */
 192         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 193         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 194         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 195         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 196         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 197         { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
 198         { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
 199         { USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 },
 200         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 201         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 202         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 203         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 204         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 205         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 206         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 207         { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
 208         { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
 209         { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
 210         { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 },
 211         { USB_DEVICE(0x04ca, 0x3018), .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
 241         /* Atheros AR5BBU12 with sflash firmware */
 242         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 243
 244         /* Atheros AR5BBU12 with sflash firmware */
 245         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 246         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 247
 248         /* QCA ROME chipset */
 249         { USB_DEVICE(0x0cf3, 0xe007), .driver_info = BTUSB_QCA_ROME },
 250         { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME },
 251         { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME },
 252
 253         /* Broadcom BCM2035 */
 254         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 255         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 256         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 257
 258         /* Broadcom BCM2045 */
 259         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 260         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 261
 262         /* IBM/Lenovo ThinkPad with Broadcom chip */
 263         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 264         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 265
 266         /* HP laptop with Broadcom chip */
 267         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 268
 269         /* Dell laptop with Broadcom chip */
 270         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 271
 272         /* Dell Wireless 370 and 410 devices */
 273         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 274         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 275
 276         /* Belkin F8T012 and F8T013 devices */
 277         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 278         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 279
 280         /* Asus WL-BTD202 device */
 281         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 282
 283         /* Kensington Bluetooth USB adapter */
 284         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 285
 286         /* RTX Telecom based adapters with buggy SCO support */
 287         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 288         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 289
 290         /* CONWISE Technology based adapters with buggy SCO support */
 291         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 292
 293         /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
 294         { USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE },
 295
 296         /* Digianswer devices */
 297         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 298         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 299
 300         /* CSR BlueCore Bluetooth Sniffer */
 301         { USB_DEVICE(0x0a12, 0x0002),
 302           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 303
 304         /* Frontline ComProbe Bluetooth Sniffer */
 305         { USB_DEVICE(0x16d3, 0x0002),
 306           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 307
 308         /* Marvell Bluetooth devices */
 309         { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
 310         { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
 311
 312         /* Intel Bluetooth devices */
 313         { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR },
 314         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 315         { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
 316         { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_NEW },
 317
 318         /* Other Intel Bluetooth devices */
 319         { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01),
 320           .driver_info = BTUSB_IGNORE },
 321
 322         /* Realtek Bluetooth devices */
 323         { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01),
 324           .driver_info = BTUSB_REALTEK },
 325
 326         /* Additional Realtek 8723AE Bluetooth devices */
 327         { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK },
 328         { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK },
 329
 330         /* Additional Realtek 8723BE Bluetooth devices */
 331         { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK },
 332         { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK },
 333         { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
 334         { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
 335         { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },
 336
 337         /* Additional Realtek 8821AE Bluetooth devices */
 338         { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
 339         { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },
 340         { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK },
 341         { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK },
 342         { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK },
 343
 344         /* Silicon Wave based devices */
 345         { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE },
 346
 347         { }     /* Terminating entry */
 348 };
 349
 350 #define BTUSB_MAX_ISOC_FRAMES   10
 351
 352 #define BTUSB_INTR_RUNNING      0
 353 #define BTUSB_BULK_RUNNING      1
 354 #define BTUSB_ISOC_RUNNING      2
 355 #define BTUSB_SUSPENDING        3
 356 #define BTUSB_DID_ISO_RESUME    4
 357 #define BTUSB_BOOTLOADER        5
 358 #define BTUSB_DOWNLOADING       6
 359 #define BTUSB_FIRMWARE_LOADED   7
 360 #define BTUSB_FIRMWARE_FAILED   8
 361 #define BTUSB_BOOTING           9
 362 #define BTUSB_RESET_RESUME      10
 363 #define BTUSB_DIAG_RUNNING      11
 364
 365 struct btusb_data {
 366         struct hci_dev       *hdev;
 367         struct usb_device    *udev;
 368         struct usb_interface *intf;
 369         struct usb_interface *isoc;
 370         struct usb_interface *diag;
 371
 372         unsigned long flags;
 373
 374         struct work_struct work;
 375         struct work_struct waker;
 376
 377         struct usb_anchor deferred;
 378         struct usb_anchor tx_anchor;
 379         int tx_in_flight;
 380         spinlock_t txlock;
 381
 382         struct usb_anchor intr_anchor;
 383         struct usb_anchor bulk_anchor;
 384         struct usb_anchor isoc_anchor;
 385         struct usb_anchor diag_anchor;
 386         spinlock_t rxlock;
 387
 388         struct sk_buff *evt_skb;
 389         struct sk_buff *acl_skb;
 390         struct sk_buff *sco_skb;
 391
 392         struct usb_endpoint_descriptor *intr_ep;
 393         struct usb_endpoint_descriptor *bulk_tx_ep;
 394         struct usb_endpoint_descriptor *bulk_rx_ep;
 395         struct usb_endpoint_descriptor *isoc_tx_ep;
 396         struct usb_endpoint_descriptor *isoc_rx_ep;
 397         struct usb_endpoint_descriptor *diag_tx_ep;
 398         struct usb_endpoint_descriptor *diag_rx_ep;
 399
 400         __u8 cmdreq_type;
 401         __u8 cmdreq;
 402
 403         unsigned int sco_num;
 404         int isoc_altsetting;
 405         int suspend_count;
 406
 407         int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
 408         int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
 409
 410         int (*setup_on_usb)(struct hci_dev *hdev);
 411 };
 412
 413 static inline void btusb_free_frags(struct btusb_data *data)
 414 {
 415         unsigned long flags;
 416
 417         spin_lock_irqsave(&data->rxlock, flags);
 418
 419         kfree_skb(data->evt_skb);
 420         data->evt_skb = NULL;
 421
 422         kfree_skb(data->acl_skb);
 423         data->acl_skb = NULL;
 424
 425         kfree_skb(data->sco_skb);
 426         data->sco_skb = NULL;
 427
 428         spin_unlock_irqrestore(&data->rxlock, flags);
 429 }
 430
 431 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
 432 {
 433         struct sk_buff *skb;
 434         int err = 0;
 435
 436         spin_lock(&data->rxlock);
 437         skb = data->evt_skb;
 438
 439         while (count) {
 440                 int len;
 441
 442                 if (!skb) {
 443                         skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
 444                         if (!skb) {
 445                                 err = -ENOMEM;
 446                                 break;
 447                         }
 448
 449                         bt_cb(skb)->pkt_type = HCI_EVENT_PKT;
 450                         bt_cb(skb)->expect = HCI_EVENT_HDR_SIZE;
 451                 }
 452
 453                 len = min_t(uint, bt_cb(skb)->expect, count);
 454                 memcpy(skb_put(skb, len), buffer, len);
 455
 456                 count -= len;
 457                 buffer += len;
 458                 bt_cb(skb)->expect -= len;
 459
 460                 if (skb->len == HCI_EVENT_HDR_SIZE) {
 461                         /* Complete event header */
 462                         bt_cb(skb)->expect = hci_event_hdr(skb)->plen;
 463
 464                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 465                                 kfree_skb(skb);
 466                                 skb = NULL;
 467
 468                                 err = -EILSEQ;
 469                                 break;
 470                         }
 471                 }
 472
 473                 if (bt_cb(skb)->expect == 0) {
 474                         /* Complete frame */
 475                         data->recv_event(data->hdev, skb);
 476                         skb = NULL;
 477                 }
 478         }
 479
 480         data->evt_skb = skb;
 481         spin_unlock(&data->rxlock);
 482
 483         return err;
 484 }
 485
 486 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
 487 {
 488         struct sk_buff *skb;
 489         int err = 0;
 490
 491         spin_lock(&data->rxlock);
 492         skb = data->acl_skb;
 493
 494         while (count) {
 495                 int len;
 496
 497                 if (!skb) {
 498                         skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
 499                         if (!skb) {
 500                                 err = -ENOMEM;
 501                                 break;
 502                         }
 503
 504                         bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT;
 505                         bt_cb(skb)->expect = HCI_ACL_HDR_SIZE;
 506                 }
 507
 508                 len = min_t(uint, bt_cb(skb)->expect, count);
 509                 memcpy(skb_put(skb, len), buffer, len);
 510
 511                 count -= len;
 512                 buffer += len;
 513                 bt_cb(skb)->expect -= len;
 514
 515                 if (skb->len == HCI_ACL_HDR_SIZE) {
 516                         __le16 dlen = hci_acl_hdr(skb)->dlen;
 517
 518                         /* Complete ACL header */
 519                         bt_cb(skb)->expect = __le16_to_cpu(dlen);
 520
 521                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 522                                 kfree_skb(skb);
 523                                 skb = NULL;
 524
 525                                 err = -EILSEQ;
 526                                 break;
 527                         }
 528                 }
 529
 530                 if (bt_cb(skb)->expect == 0) {
 531                         /* Complete frame */
 532                         hci_recv_frame(data->hdev, skb);
 533                         skb = NULL;
 534                 }
 535         }
 536
 537         data->acl_skb = skb;
 538         spin_unlock(&data->rxlock);
 539
 540         return err;
 541 }
 542
 543 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
 544 {
 545         struct sk_buff *skb;
 546         int err = 0;
 547
 548         spin_lock(&data->rxlock);
 549         skb = data->sco_skb;
 550
 551         while (count) {
 552                 int len;
 553
 554                 if (!skb) {
 555                         skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
 556                         if (!skb) {
 557                                 err = -ENOMEM;
 558                                 break;
 559                         }
 560
 561                         bt_cb(skb)->pkt_type = HCI_SCODATA_PKT;
 562                         bt_cb(skb)->expect = HCI_SCO_HDR_SIZE;
 563                 }
 564
 565                 len = min_t(uint, bt_cb(skb)->expect, count);
 566                 memcpy(skb_put(skb, len), buffer, len);
 567
 568                 count -= len;
 569                 buffer += len;
 570                 bt_cb(skb)->expect -= len;
 571
 572                 if (skb->len == HCI_SCO_HDR_SIZE) {
 573                         /* Complete SCO header */
 574                         bt_cb(skb)->expect = hci_sco_hdr(skb)->dlen;
 575
 576                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 577                                 kfree_skb(skb);
 578                                 skb = NULL;
 579
 580                                 err = -EILSEQ;
 581                                 break;
 582                         }
 583                 }
 584
 585                 if (bt_cb(skb)->expect == 0) {
 586                         /* Complete frame */
 587                         hci_recv_frame(data->hdev, skb);
 588                         skb = NULL;
 589                 }
 590         }
 591
 592         data->sco_skb = skb;
 593         spin_unlock(&data->rxlock);
 594
 595         return err;
 596 }
 597
 598 static void btusb_intr_complete(struct urb *urb)
 599 {
 600         struct hci_dev *hdev = urb->context;
 601         struct btusb_data *data = hci_get_drvdata(hdev);
 602         int err;
 603
 604         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 605                urb->actual_length);
 606
 607         if (!test_bit(HCI_RUNNING, &hdev->flags))
 608                 return;
 609
 610         if (urb->status == 0) {
 611                 hdev->stat.byte_rx += urb->actual_length;
 612
 613                 if (btusb_recv_intr(data, urb->transfer_buffer,
 614                                     urb->actual_length) < 0) {
 615                         BT_ERR("%s corrupted event packet", hdev->name);
 616                         hdev->stat.err_rx++;
 617                 }
 618         } else if (urb->status == -ENOENT) {
 619                 /* Avoid suspend failed when usb_kill_urb */
 620                 return;
 621         }
 622
 623         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 624                 return;
 625
 626         usb_mark_last_busy(data->udev);
 627         usb_anchor_urb(urb, &data->intr_anchor);
 628
 629         err = usb_submit_urb(urb, GFP_ATOMIC);
 630         if (err < 0) {
 631                 /* -EPERM: urb is being killed;
 632                  * -ENODEV: device got disconnected */
 633                 if (err != -EPERM && err != -ENODEV)
 634                         BT_ERR("%s urb %p failed to resubmit (%d)",
 635                                hdev->name, urb, -err);
 636                 usb_unanchor_urb(urb);
 637         }
 638 }
 639
 640 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 641 {
 642         struct btusb_data *data = hci_get_drvdata(hdev);
 643         struct urb *urb;
 644         unsigned char *buf;
 645         unsigned int pipe;
 646         int err, size;
 647
 648         BT_DBG("%s", hdev->name);
 649
 650         if (!data->intr_ep)
 651                 return -ENODEV;
 652
 653         urb = usb_alloc_urb(0, mem_flags);
 654         if (!urb)
 655                 return -ENOMEM;
 656
 657         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 658
 659         buf = kmalloc(size, mem_flags);
 660         if (!buf) {
 661                 usb_free_urb(urb);
 662                 return -ENOMEM;
 663         }
 664
 665         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 666
 667         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 668                          btusb_intr_complete, hdev, data->intr_ep->bInterval);
 669
 670         urb->transfer_flags |= URB_FREE_BUFFER;
 671
 672         usb_anchor_urb(urb, &data->intr_anchor);
 673
 674         err = usb_submit_urb(urb, mem_flags);
 675         if (err < 0) {
 676                 if (err != -EPERM && err != -ENODEV)
 677                         BT_ERR("%s urb %p submission failed (%d)",
 678                                hdev->name, urb, -err);
 679                 usb_unanchor_urb(urb);
 680         }
 681
 682         usb_free_urb(urb);
 683
 684         return err;
 685 }
 686
 687 static void btusb_bulk_complete(struct urb *urb)
 688 {
 689         struct hci_dev *hdev = urb->context;
 690         struct btusb_data *data = hci_get_drvdata(hdev);
 691         int err;
 692
 693         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 694                urb->actual_length);
 695
 696         if (!test_bit(HCI_RUNNING, &hdev->flags))
 697                 return;
 698
 699         if (urb->status == 0) {
 700                 hdev->stat.byte_rx += urb->actual_length;
 701
 702                 if (data->recv_bulk(data, urb->transfer_buffer,
 703                                     urb->actual_length) < 0) {
 704                         BT_ERR("%s corrupted ACL packet", hdev->name);
 705                         hdev->stat.err_rx++;
 706                 }
 707         } else if (urb->status == -ENOENT) {
 708                 /* Avoid suspend failed when usb_kill_urb */
 709                 return;
 710         }
 711
 712         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 713                 return;
 714
 715         usb_anchor_urb(urb, &data->bulk_anchor);
 716         usb_mark_last_busy(data->udev);
 717
 718         err = usb_submit_urb(urb, GFP_ATOMIC);
 719         if (err < 0) {
 720                 /* -EPERM: urb is being killed;
 721                  * -ENODEV: device got disconnected */
 722                 if (err != -EPERM && err != -ENODEV)
 723                         BT_ERR("%s urb %p failed to resubmit (%d)",
 724                                hdev->name, urb, -err);
 725                 usb_unanchor_urb(urb);
 726         }
 727 }
 728
 729 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 730 {
 731         struct btusb_data *data = hci_get_drvdata(hdev);
 732         struct urb *urb;
 733         unsigned char *buf;
 734         unsigned int pipe;
 735         int err, size = HCI_MAX_FRAME_SIZE;
 736
 737         BT_DBG("%s", hdev->name);
 738
 739         if (!data->bulk_rx_ep)
 740                 return -ENODEV;
 741
 742         urb = usb_alloc_urb(0, mem_flags);
 743         if (!urb)
 744                 return -ENOMEM;
 745
 746         buf = kmalloc(size, mem_flags);
 747         if (!buf) {
 748                 usb_free_urb(urb);
 749                 return -ENOMEM;
 750         }
 751
 752         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 753
 754         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
 755                           btusb_bulk_complete, hdev);
 756
 757         urb->transfer_flags |= URB_FREE_BUFFER;
 758
 759         usb_mark_last_busy(data->udev);
 760         usb_anchor_urb(urb, &data->bulk_anchor);
 761
 762         err = usb_submit_urb(urb, mem_flags);
 763         if (err < 0) {
 764                 if (err != -EPERM && err != -ENODEV)
 765                         BT_ERR("%s urb %p submission failed (%d)",
 766                                hdev->name, urb, -err);
 767                 usb_unanchor_urb(urb);
 768         }
 769
 770         usb_free_urb(urb);
 771
 772         return err;
 773 }
 774
 775 static void btusb_isoc_complete(struct urb *urb)
 776 {
 777         struct hci_dev *hdev = urb->context;
 778         struct btusb_data *data = hci_get_drvdata(hdev);
 779         int i, err;
 780
 781         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 782                urb->actual_length);
 783
 784         if (!test_bit(HCI_RUNNING, &hdev->flags))
 785                 return;
 786
 787         if (urb->status == 0) {
 788                 for (i = 0; i < urb->number_of_packets; i++) {
 789                         unsigned int offset = urb->iso_frame_desc[i].offset;
 790                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 791
 792                         if (urb->iso_frame_desc[i].status)
 793                                 continue;
 794
 795                         hdev->stat.byte_rx += length;
 796
 797                         if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
 798                                             length) < 0) {
 799                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 800                                 hdev->stat.err_rx++;
 801                         }
 802                 }
 803         } else if (urb->status == -ENOENT) {
 804                 /* Avoid suspend failed when usb_kill_urb */
 805                 return;
 806         }
 807
 808         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 809                 return;
 810
 811         usb_anchor_urb(urb, &data->isoc_anchor);
 812
 813         err = usb_submit_urb(urb, GFP_ATOMIC);
 814         if (err < 0) {
 815                 /* -EPERM: urb is being killed;
 816                  * -ENODEV: device got disconnected */
 817                 if (err != -EPERM && err != -ENODEV)
 818                         BT_ERR("%s urb %p failed to resubmit (%d)",
 819                                hdev->name, urb, -err);
 820                 usb_unanchor_urb(urb);
 821         }
 822 }
 823
 824 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 825 {
 826         int i, offset = 0;
 827
 828         BT_DBG("len %d mtu %d", len, mtu);
 829
 830         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 831                                         i++, offset += mtu, len -= mtu) {
 832                 urb->iso_frame_desc[i].offset = offset;
 833                 urb->iso_frame_desc[i].length = mtu;
 834         }
 835
 836         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 837                 urb->iso_frame_desc[i].offset = offset;
 838                 urb->iso_frame_desc[i].length = len;
 839                 i++;
 840         }
 841
 842         urb->number_of_packets = i;
 843 }
 844
 845 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 846 {
 847         struct btusb_data *data = hci_get_drvdata(hdev);
 848         struct urb *urb;
 849         unsigned char *buf;
 850         unsigned int pipe;
 851         int err, size;
 852
 853         BT_DBG("%s", hdev->name);
 854
 855         if (!data->isoc_rx_ep)
 856                 return -ENODEV;
 857
 858         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 859         if (!urb)
 860                 return -ENOMEM;
 861
 862         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 863                                                 BTUSB_MAX_ISOC_FRAMES;
 864
 865         buf = kmalloc(size, mem_flags);
 866         if (!buf) {
 867                 usb_free_urb(urb);
 868                 return -ENOMEM;
 869         }
 870
 871         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 872
 873         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 874                          hdev, data->isoc_rx_ep->bInterval);
 875
 876         urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
 877
 878         __fill_isoc_descriptor(urb, size,
 879                                le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 880
 881         usb_anchor_urb(urb, &data->isoc_anchor);
 882
 883         err = usb_submit_urb(urb, mem_flags);
 884         if (err < 0) {
 885                 if (err != -EPERM && err != -ENODEV)
 886                         BT_ERR("%s urb %p submission failed (%d)",
 887                                hdev->name, urb, -err);
 888                 usb_unanchor_urb(urb);
 889         }
 890
 891         usb_free_urb(urb);
 892
 893         return err;
 894 }
 895
 896 static void btusb_diag_complete(struct urb *urb)
 897 {
 898         struct hci_dev *hdev = urb->context;
 899         struct btusb_data *data = hci_get_drvdata(hdev);
 900         int err;
 901
 902         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 903                urb->actual_length);
 904
 905         if (urb->status == 0) {
 906                 struct sk_buff *skb;
 907
 908                 skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC);
 909                 if (skb) {
 910                         memcpy(skb_put(skb, urb->actual_length),
 911                                urb->transfer_buffer, urb->actual_length);
 912                         hci_recv_diag(hdev, skb);
 913                 }
 914         } else if (urb->status == -ENOENT) {
 915                 /* Avoid suspend failed when usb_kill_urb */
 916                 return;
 917         }
 918
 919         if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags))
 920                 return;
 921
 922         usb_anchor_urb(urb, &data->diag_anchor);
 923         usb_mark_last_busy(data->udev);
 924
 925         err = usb_submit_urb(urb, GFP_ATOMIC);
 926         if (err < 0) {
 927                 /* -EPERM: urb is being killed;
 928                  * -ENODEV: device got disconnected */
 929                 if (err != -EPERM && err != -ENODEV)
 930                         BT_ERR("%s urb %p failed to resubmit (%d)",
 931                                hdev->name, urb, -err);
 932                 usb_unanchor_urb(urb);
 933         }
 934 }
 935
 936 static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags)
 937 {
 938         struct btusb_data *data = hci_get_drvdata(hdev);
 939         struct urb *urb;
 940         unsigned char *buf;
 941         unsigned int pipe;
 942         int err, size = HCI_MAX_FRAME_SIZE;
 943
 944         BT_DBG("%s", hdev->name);
 945
 946         if (!data->diag_rx_ep)
 947                 return -ENODEV;
 948
 949         urb = usb_alloc_urb(0, mem_flags);
 950         if (!urb)
 951                 return -ENOMEM;
 952
 953         buf = kmalloc(size, mem_flags);
 954         if (!buf) {
 955                 usb_free_urb(urb);
 956                 return -ENOMEM;
 957         }
 958
 959         pipe = usb_rcvbulkpipe(data->udev, data->diag_rx_ep->bEndpointAddress);
 960
 961         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
 962                           btusb_diag_complete, hdev);
 963
 964         urb->transfer_flags |= URB_FREE_BUFFER;
 965
 966         usb_mark_last_busy(data->udev);
 967         usb_anchor_urb(urb, &data->diag_anchor);
 968
 969         err = usb_submit_urb(urb, mem_flags);
 970         if (err < 0) {
 971                 if (err != -EPERM && err != -ENODEV)
 972                         BT_ERR("%s urb %p submission failed (%d)",
 973                                hdev->name, urb, -err);
 974                 usb_unanchor_urb(urb);
 975         }
 976
 977         usb_free_urb(urb);
 978
 979         return err;
 980 }
 981
 982 static void btusb_tx_complete(struct urb *urb)
 983 {
 984         struct sk_buff *skb = urb->context;
 985         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
 986         struct btusb_data *data = hci_get_drvdata(hdev);
 987
 988         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 989                urb->actual_length);
 990
 991         if (!test_bit(HCI_RUNNING, &hdev->flags))
 992                 goto done;
 993
 994         if (!urb->status)
 995                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 996         else
 997                 hdev->stat.err_tx++;
 998
 999 done:
1000         spin_lock(&data->txlock);
1001         data->tx_in_flight--;
1002         spin_unlock(&data->txlock);
1003
1004         kfree(urb->setup_packet);
1005
1006         kfree_skb(skb);
1007 }
1008
1009 static void btusb_isoc_tx_complete(struct urb *urb)
1010 {
1011         struct sk_buff *skb = urb->context;
1012         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1013
1014         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1015                urb->actual_length);
1016
1017         if (!test_bit(HCI_RUNNING, &hdev->flags))
1018                 goto done;
1019
1020         if (!urb->status)
1021                 hdev->stat.byte_tx += urb->transfer_buffer_length;
1022         else
1023                 hdev->stat.err_tx++;
1024
1025 done:
1026         kfree(urb->setup_packet);
1027
1028         kfree_skb(skb);
1029 }
1030
1031 static int btusb_open(struct hci_dev *hdev)
1032 {
1033         struct btusb_data *data = hci_get_drvdata(hdev);
1034         int err;
1035
1036         BT_DBG("%s", hdev->name);
1037
1038         /* Patching USB firmware files prior to starting any URBs of HCI path
1039          * It is more safe to use USB bulk channel for downloading USB patch
1040          */
1041         if (data->setup_on_usb) {
1042                 err = data->setup_on_usb(hdev);
1043                 if (err < 0)
1044                         return err;
1045         }
1046
1047         err = usb_autopm_get_interface(data->intf);
1048         if (err < 0)
1049                 return err;
1050
1051         data->intf->needs_remote_wakeup = 1;
1052
1053         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
1054                 goto done;
1055
1056         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
1057         if (err < 0)
1058                 goto failed;
1059
1060         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1061         if (err < 0) {
1062                 usb_kill_anchored_urbs(&data->intr_anchor);
1063                 goto failed;
1064         }
1065
1066         set_bit(BTUSB_BULK_RUNNING, &data->flags);
1067         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1068
1069         if (data->diag) {
1070                 if (!btusb_submit_diag_urb(hdev, GFP_KERNEL))
1071                         set_bit(BTUSB_DIAG_RUNNING, &data->flags);
1072         }
1073
1074 done:
1075         usb_autopm_put_interface(data->intf);
1076         return 0;
1077
1078 failed:
1079         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1080         usb_autopm_put_interface(data->intf);
1081         return err;
1082 }
1083
1084 static void btusb_stop_traffic(struct btusb_data *data)
1085 {
1086         usb_kill_anchored_urbs(&data->intr_anchor);
1087         usb_kill_anchored_urbs(&data->bulk_anchor);
1088         usb_kill_anchored_urbs(&data->isoc_anchor);
1089         usb_kill_anchored_urbs(&data->diag_anchor);
1090 }
1091
1092 static int btusb_close(struct hci_dev *hdev)
1093 {
1094         struct btusb_data *data = hci_get_drvdata(hdev);
1095         int err;
1096
1097         BT_DBG("%s", hdev->name);
1098
1099         cancel_work_sync(&data->work);
1100         cancel_work_sync(&data->waker);
1101
1102         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1103         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1104         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1105         clear_bit(BTUSB_DIAG_RUNNING, &data->flags);
1106
1107         btusb_stop_traffic(data);
1108         btusb_free_frags(data);
1109
1110         err = usb_autopm_get_interface(data->intf);
1111         if (err < 0)
1112                 goto failed;
1113
1114         data->intf->needs_remote_wakeup = 0;
1115         usb_autopm_put_interface(data->intf);
1116
1117 failed:
1118         usb_scuttle_anchored_urbs(&data->deferred);
1119         return 0;
1120 }
1121
1122 static int btusb_flush(struct hci_dev *hdev)
1123 {
1124         struct btusb_data *data = hci_get_drvdata(hdev);
1125
1126         BT_DBG("%s", hdev->name);
1127
1128         usb_kill_anchored_urbs(&data->tx_anchor);
1129         btusb_free_frags(data);
1130
1131         return 0;
1132 }
1133
1134 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
1135 {
1136         struct btusb_data *data = hci_get_drvdata(hdev);
1137         struct usb_ctrlrequest *dr;
1138         struct urb *urb;
1139         unsigned int pipe;
1140
1141         urb = usb_alloc_urb(0, GFP_KERNEL);
1142         if (!urb)
1143                 return ERR_PTR(-ENOMEM);
1144
1145         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
1146         if (!dr) {
1147                 usb_free_urb(urb);
1148                 return ERR_PTR(-ENOMEM);
1149         }
1150
1151         dr->bRequestType = data->cmdreq_type;
1152         dr->bRequest     = data->cmdreq;
1153         dr->wIndex       = 0;
1154         dr->wValue       = 0;
1155         dr->wLength      = __cpu_to_le16(skb->len);
1156
1157         pipe = usb_sndctrlpipe(data->udev, 0x00);
1158
1159         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
1160                              skb->data, skb->len, btusb_tx_complete, skb);
1161
1162         skb->dev = (void *)hdev;
1163
1164         return urb;
1165 }
1166
1167 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
1168 {
1169         struct btusb_data *data = hci_get_drvdata(hdev);
1170         struct urb *urb;
1171         unsigned int pipe;
1172
1173         if (!data->bulk_tx_ep)
1174                 return ERR_PTR(-ENODEV);
1175
1176         urb = usb_alloc_urb(0, GFP_KERNEL);
1177         if (!urb)
1178                 return ERR_PTR(-ENOMEM);
1179
1180         pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1181
1182         usb_fill_bulk_urb(urb, data->udev, pipe,
1183                           skb->data, skb->len, btusb_tx_complete, skb);
1184
1185         skb->dev = (void *)hdev;
1186
1187         return urb;
1188 }
1189
1190 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1191 {
1192         struct btusb_data *data = hci_get_drvdata(hdev);
1193         struct urb *urb;
1194         unsigned int pipe;
1195
1196         if (!data->isoc_tx_ep)
1197                 return ERR_PTR(-ENODEV);
1198
1199         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1200         if (!urb)
1201                 return ERR_PTR(-ENOMEM);
1202
1203         pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1204
1205         usb_fill_int_urb(urb, data->udev, pipe,
1206                          skb->data, skb->len, btusb_isoc_tx_complete,
1207                          skb, data->isoc_tx_ep->bInterval);
1208
1209         urb->transfer_flags  = URB_ISO_ASAP;
1210
1211         __fill_isoc_descriptor(urb, skb->len,
1212                                le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1213
1214         skb->dev = (void *)hdev;
1215
1216         return urb;
1217 }
1218
1219 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1220 {
1221         struct btusb_data *data = hci_get_drvdata(hdev);
1222         int err;
1223
1224         usb_anchor_urb(urb, &data->tx_anchor);
1225
1226         err = usb_submit_urb(urb, GFP_KERNEL);
1227         if (err < 0) {
1228                 if (err != -EPERM && err != -ENODEV)
1229                         BT_ERR("%s urb %p submission failed (%d)",
1230                                hdev->name, urb, -err);
1231                 kfree(urb->setup_packet);
1232                 usb_unanchor_urb(urb);
1233         } else {
1234                 usb_mark_last_busy(data->udev);
1235         }
1236
1237         usb_free_urb(urb);
1238         return err;
1239 }
1240
1241 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1242 {
1243         struct btusb_data *data = hci_get_drvdata(hdev);
1244         unsigned long flags;
1245         bool suspending;
1246
1247         spin_lock_irqsave(&data->txlock, flags);
1248         suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1249         if (!suspending)
1250                 data->tx_in_flight++;
1251         spin_unlock_irqrestore(&data->txlock, flags);
1252
1253         if (!suspending)
1254                 return submit_tx_urb(hdev, urb);
1255
1256         usb_anchor_urb(urb, &data->deferred);
1257         schedule_work(&data->waker);
1258
1259         usb_free_urb(urb);
1260         return 0;
1261 }
1262
1263 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1264 {
1265         struct urb *urb;
1266
1267         BT_DBG("%s", hdev->name);
1268
1269         switch (bt_cb(skb)->pkt_type) {
1270         case HCI_COMMAND_PKT:
1271                 urb = alloc_ctrl_urb(hdev, skb);
1272                 if (IS_ERR(urb))
1273                         return PTR_ERR(urb);
1274
1275                 hdev->stat.cmd_tx++;
1276                 return submit_or_queue_tx_urb(hdev, urb);
1277
1278         case HCI_ACLDATA_PKT:
1279                 urb = alloc_bulk_urb(hdev, skb);
1280                 if (IS_ERR(urb))
1281                         return PTR_ERR(urb);
1282
1283                 hdev->stat.acl_tx++;
1284                 return submit_or_queue_tx_urb(hdev, urb);
1285
1286         case HCI_SCODATA_PKT:
1287                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1288                         return -ENODEV;
1289
1290                 urb = alloc_isoc_urb(hdev, skb);
1291                 if (IS_ERR(urb))
1292                         return PTR_ERR(urb);
1293
1294                 hdev->stat.sco_tx++;
1295                 return submit_tx_urb(hdev, urb);
1296         }
1297
1298         return -EILSEQ;
1299 }
1300
1301 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1302 {
1303         struct btusb_data *data = hci_get_drvdata(hdev);
1304
1305         BT_DBG("%s evt %d", hdev->name, evt);
1306
1307         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1308                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1309                 schedule_work(&data->work);
1310         }
1311 }
1312
1313 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1314 {
1315         struct btusb_data *data = hci_get_drvdata(hdev);
1316         struct usb_interface *intf = data->isoc;
1317         struct usb_endpoint_descriptor *ep_desc;
1318         int i, err;
1319
1320         if (!data->isoc)
1321                 return -ENODEV;
1322
1323         err = usb_set_interface(data->udev, 1, altsetting);
1324         if (err < 0) {
1325                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
1326                 return err;
1327         }
1328
1329         data->isoc_altsetting = altsetting;
1330
1331         data->isoc_tx_ep = NULL;
1332         data->isoc_rx_ep = NULL;
1333
1334         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1335                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1336
1337                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1338                         data->isoc_tx_ep = ep_desc;
1339                         continue;
1340                 }
1341
1342                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1343                         data->isoc_rx_ep = ep_desc;
1344                         continue;
1345                 }
1346         }
1347
1348         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1349                 BT_ERR("%s invalid SCO descriptors", hdev->name);
1350                 return -ENODEV;
1351         }
1352
1353         return 0;
1354 }
1355
1356 static void btusb_work(struct work_struct *work)
1357 {
1358         struct btusb_data *data = container_of(work, struct btusb_data, work);
1359         struct hci_dev *hdev = data->hdev;
1360         int new_alts;
1361         int err;
1362
1363         if (data->sco_num > 0) {
1364                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1365                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1366                         if (err < 0) {
1367                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1368                                 usb_kill_anchored_urbs(&data->isoc_anchor);
1369                                 return;
1370                         }
1371
1372                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1373                 }
1374
1375                 if (hdev->voice_setting & 0x0020) {
1376                         static const int alts[3] = { 2, 4, 5 };
1377
1378                         new_alts = alts[data->sco_num - 1];
1379                 } else {
1380                         new_alts = data->sco_num;
1381                 }
1382
1383                 if (data->isoc_altsetting != new_alts) {
1384                         unsigned long flags;
1385
1386                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1387                         usb_kill_anchored_urbs(&data->isoc_anchor);
1388
1389                         /* When isochronous alternate setting needs to be
1390                          * changed, because SCO connection has been added
1391                          * or removed, a packet fragment may be left in the
1392                          * reassembling state. This could lead to wrongly
1393                          * assembled fragments.
1394                          *
1395                          * Clear outstanding fragment when selecting a new
1396                          * alternate setting.
1397                          */
1398                         spin_lock_irqsave(&data->rxlock, flags);
1399                         kfree_skb(data->sco_skb);
1400                         data->sco_skb = NULL;
1401                         spin_unlock_irqrestore(&data->rxlock, flags);
1402
1403                         if (__set_isoc_interface(hdev, new_alts) < 0)
1404                                 return;
1405                 }
1406
1407                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1408                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1409                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1410                         else
1411                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1412                 }
1413         } else {
1414                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1415                 usb_kill_anchored_urbs(&data->isoc_anchor);
1416
1417                 __set_isoc_interface(hdev, 0);
1418                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1419                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1420         }
1421 }
1422
1423 static void btusb_waker(struct work_struct *work)
1424 {
1425         struct btusb_data *data = container_of(work, struct btusb_data, waker);
1426         int err;
1427
1428         err = usb_autopm_get_interface(data->intf);
1429         if (err < 0)
1430                 return;
1431
1432         usb_autopm_put_interface(data->intf);
1433 }
1434
1435 static int btusb_setup_bcm92035(struct hci_dev *hdev)
1436 {
1437         struct sk_buff *skb;
1438         u8 val = 0x00;
1439
1440         BT_DBG("%s", hdev->name);
1441
1442         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1443         if (IS_ERR(skb))
1444                 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
1445         else
1446                 kfree_skb(skb);
1447
1448         return 0;
1449 }
1450
1451 static int btusb_setup_csr(struct hci_dev *hdev)
1452 {
1453         struct hci_rp_read_local_version *rp;
1454         struct sk_buff *skb;
1455
1456         BT_DBG("%s", hdev->name);
1457
1458         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1459                              HCI_INIT_TIMEOUT);
1460         if (IS_ERR(skb)) {
1461                 int err = PTR_ERR(skb);
1462                 BT_ERR("%s: CSR: Local version failed (%d)", hdev->name, err);
1463                 return err;
1464         }
1465
1466         if (skb->len != sizeof(struct hci_rp_read_local_version)) {
1467                 BT_ERR("%s: CSR: Local version length mismatch", hdev->name);
1468                 kfree_skb(skb);
1469                 return -EIO;
1470         }
1471
1472         rp = (struct hci_rp_read_local_version *)skb->data;
1473
1474         /* Detect controllers which aren't real CSR ones. */
1475         if (le16_to_cpu(rp->manufacturer) != 10 ||
1476             le16_to_cpu(rp->lmp_subver) == 0x0c5c) {
1477                 /* Clear the reset quirk since this is not an actual
1478                  * early Bluetooth 1.1 device from CSR.
1479                  */
1480                 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1481
1482                 /* These fake CSR controllers have all a broken
1483                  * stored link key handling and so just disable it.
1484                  */
1485                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
1486         }
1487
1488         kfree_skb(skb);
1489
1490         return 0;
1491 }
1492
1493 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1494                                                        struct intel_version *ver)
1495 {
1496         const struct firmware *fw;
1497         char fwname[64];
1498         int ret;
1499
1500         snprintf(fwname, sizeof(fwname),
1501                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1502                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
1503                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1504                  ver->fw_build_ww, ver->fw_build_yy);
1505
1506         ret = request_firmware(&fw, fwname, &hdev->dev);
1507         if (ret < 0) {
1508                 if (ret == -EINVAL) {
1509                         BT_ERR("%s Intel firmware file request failed (%d)",
1510                                hdev->name, ret);
1511                         return NULL;
1512                 }
1513
1514                 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1515                        hdev->name, fwname, ret);
1516
1517                 /* If the correct firmware patch file is not found, use the
1518                  * default firmware patch file instead
1519                  */
1520                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1521                          ver->hw_platform, ver->hw_variant);
1522                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1523                         BT_ERR("%s failed to open default Intel fw file: %s",
1524                                hdev->name, fwname);
1525                         return NULL;
1526                 }
1527         }
1528
1529         BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1530
1531         return fw;
1532 }
1533
1534 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1535                                       const struct firmware *fw,
1536                                       const u8 **fw_ptr, int *disable_patch)
1537 {
1538         struct sk_buff *skb;
1539         struct hci_command_hdr *cmd;
1540         const u8 *cmd_param;
1541         struct hci_event_hdr *evt = NULL;
1542         const u8 *evt_param = NULL;
1543         int remain = fw->size - (*fw_ptr - fw->data);
1544
1545         /* The first byte indicates the types of the patch command or event.
1546          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1547          * in the current firmware buffer doesn't start with 0x01 or
1548          * the size of remain buffer is smaller than HCI command header,
1549          * the firmware file is corrupted and it should stop the patching
1550          * process.
1551          */
1552         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1553                 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1554                 return -EINVAL;
1555         }
1556         (*fw_ptr)++;
1557         remain--;
1558
1559         cmd = (struct hci_command_hdr *)(*fw_ptr);
1560         *fw_ptr += sizeof(*cmd);
1561         remain -= sizeof(*cmd);
1562
1563         /* Ensure that the remain firmware data is long enough than the length
1564          * of command parameter. If not, the firmware file is corrupted.
1565          */
1566         if (remain < cmd->plen) {
1567                 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1568                 return -EFAULT;
1569         }
1570
1571         /* If there is a command that loads a patch in the firmware
1572          * file, then enable the patch upon success, otherwise just
1573          * disable the manufacturer mode, for example patch activation
1574          * is not required when the default firmware patch file is used
1575          * because there are no patch data to load.
1576          */
1577         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1578                 *disable_patch = 0;
1579
1580         cmd_param = *fw_ptr;
1581         *fw_ptr += cmd->plen;
1582         remain -= cmd->plen;
1583
1584         /* This reads the expected events when the above command is sent to the
1585          * device. Some vendor commands expects more than one events, for
1586          * example command status event followed by vendor specific event.
1587          * For this case, it only keeps the last expected event. so the command
1588          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1589          * last expected event.
1590          */
1591         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1592                 (*fw_ptr)++;
1593                 remain--;
1594
1595                 evt = (struct hci_event_hdr *)(*fw_ptr);
1596                 *fw_ptr += sizeof(*evt);
1597                 remain -= sizeof(*evt);
1598
1599                 if (remain < evt->plen) {
1600                         BT_ERR("%s Intel fw corrupted: invalid evt len",
1601                                hdev->name);
1602                         return -EFAULT;
1603                 }
1604
1605                 evt_param = *fw_ptr;
1606                 *fw_ptr += evt->plen;
1607                 remain -= evt->plen;
1608         }
1609
1610         /* Every HCI commands in the firmware file has its correspond event.
1611          * If event is not found or remain is smaller than zero, the firmware
1612          * file is corrupted.
1613          */
1614         if (!evt || !evt_param || remain < 0) {
1615                 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1616                 return -EFAULT;
1617         }
1618
1619         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1620                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1621         if (IS_ERR(skb)) {
1622                 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1623                        hdev->name, cmd->opcode, PTR_ERR(skb));
1624                 return PTR_ERR(skb);
1625         }
1626
1627         /* It ensures that the returned event matches the event data read from
1628          * the firmware file. At fist, it checks the length and then
1629          * the contents of the event.
1630          */
1631         if (skb->len != evt->plen) {
1632                 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1633                        le16_to_cpu(cmd->opcode));
1634                 kfree_skb(skb);
1635                 return -EFAULT;
1636         }
1637
1638         if (memcmp(skb->data, evt_param, evt->plen)) {
1639                 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1640                        hdev->name, le16_to_cpu(cmd->opcode));
1641                 kfree_skb(skb);
1642                 return -EFAULT;
1643         }
1644         kfree_skb(skb);
1645
1646         return 0;
1647 }
1648
1649 static int btusb_setup_intel(struct hci_dev *hdev)
1650 {
1651         struct sk_buff *skb;
1652         const struct firmware *fw;
1653         const u8 *fw_ptr;
1654         int disable_patch;
1655         struct intel_version *ver;
1656
1657         const u8 mfg_enable[] = { 0x01, 0x00 };
1658         const u8 mfg_disable[] = { 0x00, 0x00 };
1659         const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
1660         const u8 mfg_reset_activate[] = { 0x00, 0x02 };
1661
1662         BT_DBG("%s", hdev->name);
1663
1664         /* The controller has a bug with the first HCI command sent to it
1665          * returning number of completed commands as zero. This would stall the
1666          * command processing in the Bluetooth core.
1667          *
1668          * As a workaround, send HCI Reset command first which will reset the
1669          * number of completed commands and allow normal command processing
1670          * from now on.
1671          */
1672         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1673         if (IS_ERR(skb)) {
1674                 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1675                        hdev->name, PTR_ERR(skb));
1676                 return PTR_ERR(skb);
1677         }
1678         kfree_skb(skb);
1679
1680         /* Read Intel specific controller version first to allow selection of
1681          * which firmware file to load.
1682          *
1683          * The returned information are hardware variant and revision plus
1684          * firmware variant, revision and build number.
1685          */
1686         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1687         if (IS_ERR(skb)) {
1688                 BT_ERR("%s reading Intel fw version command failed (%ld)",
1689                        hdev->name, PTR_ERR(skb));
1690                 return PTR_ERR(skb);
1691         }
1692
1693         if (skb->len != sizeof(*ver)) {
1694                 BT_ERR("%s Intel version event length mismatch", hdev->name);
1695                 kfree_skb(skb);
1696                 return -EIO;
1697         }
1698
1699         ver = (struct intel_version *)skb->data;
1700
1701         BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1702                 hdev->name, ver->hw_platform, ver->hw_variant,
1703                 ver->hw_revision, ver->fw_variant,  ver->fw_revision,
1704                 ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
1705                 ver->fw_patch_num);
1706
1707         /* fw_patch_num indicates the version of patch the device currently
1708          * have. If there is no patch data in the device, it is always 0x00.
1709          * So, if it is other than 0x00, no need to patch the device again.
1710          */
1711         if (ver->fw_patch_num) {
1712                 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1713                         hdev->name, ver->fw_patch_num);
1714                 kfree_skb(skb);
1715                 goto complete;
1716         }
1717
1718         /* Opens the firmware patch file based on the firmware version read
1719          * from the controller. If it fails to open the matching firmware
1720          * patch file, it tries to open the default firmware patch file.
1721          * If no patch file is found, allow the device to operate without
1722          * a patch.
1723          */
1724         fw = btusb_setup_intel_get_fw(hdev, ver);
1725         if (!fw) {
1726                 kfree_skb(skb);
1727                 goto complete;
1728         }
1729         fw_ptr = fw->data;
1730
1731         kfree_skb(skb);
1732
1733         /* This Intel specific command enables the manufacturer mode of the
1734          * controller.
1735          *
1736          * Only while this mode is enabled, the driver can download the
1737          * firmware patch data and configuration parameters.
1738          */
1739         skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
1740         if (IS_ERR(skb)) {
1741                 BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
1742                        hdev->name, PTR_ERR(skb));
1743                 release_firmware(fw);
1744                 return PTR_ERR(skb);
1745         }
1746
1747         kfree_skb(skb);
1748
1749         disable_patch = 1;
1750
1751         /* The firmware data file consists of list of Intel specific HCI
1752          * commands and its expected events. The first byte indicates the
1753          * type of the message, either HCI command or HCI event.
1754          *
1755          * It reads the command and its expected event from the firmware file,
1756          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1757          * the returned event is compared with the event read from the firmware
1758          * file and it will continue until all the messages are downloaded to
1759          * the controller.
1760          *
1761          * Once the firmware patching is completed successfully,
1762          * the manufacturer mode is disabled with reset and activating the
1763          * downloaded patch.
1764          *
1765          * If the firmware patching fails, the manufacturer mode is
1766          * disabled with reset and deactivating the patch.
1767          *
1768          * If the default patch file is used, no reset is done when disabling
1769          * the manufacturer.
1770          */
1771         while (fw->size > fw_ptr - fw->data) {
1772                 int ret;
1773
1774                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1775                                                  &disable_patch);
1776                 if (ret < 0)
1777                         goto exit_mfg_deactivate;
1778         }
1779
1780         release_firmware(fw);
1781
1782         if (disable_patch)
1783                 goto exit_mfg_disable;
1784
1785         /* Patching completed successfully and disable the manufacturer mode
1786          * with reset and activate the downloaded firmware patches.
1787          */
1788         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
1789                              mfg_reset_activate, HCI_INIT_TIMEOUT);
1790         if (IS_ERR(skb)) {
1791                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1792                        hdev->name, PTR_ERR(skb));
1793                 return PTR_ERR(skb);
1794         }
1795         kfree_skb(skb);
1796
1797         BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1798                 hdev->name);
1799
1800         goto complete;
1801
1802 exit_mfg_disable:
1803         /* Disable the manufacturer mode without reset */
1804         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
1805                              HCI_INIT_TIMEOUT);
1806         if (IS_ERR(skb)) {
1807                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1808                        hdev->name, PTR_ERR(skb));
1809                 return PTR_ERR(skb);
1810         }
1811         kfree_skb(skb);
1812
1813         BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1814
1815         goto complete;
1816
1817 exit_mfg_deactivate:
1818         release_firmware(fw);
1819
1820         /* Patching failed. Disable the manufacturer mode with reset and
1821          * deactivate the downloaded firmware patches.
1822          */
1823         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
1824                              mfg_reset_deactivate, HCI_INIT_TIMEOUT);
1825         if (IS_ERR(skb)) {
1826                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1827                        hdev->name, PTR_ERR(skb));
1828                 return PTR_ERR(skb);
1829         }
1830         kfree_skb(skb);
1831
1832         BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1833                 hdev->name);
1834
1835 complete:
1836         /* Set the event mask for Intel specific vendor events. This enables
1837          * a few extra events that are useful during general operation.
1838          */
1839         btintel_set_event_mask_mfg(hdev, false);
1840
1841         btintel_check_bdaddr(hdev);
1842         return 0;
1843 }
1844
1845 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
1846 {
1847         struct sk_buff *skb;
1848         struct hci_event_hdr *hdr;
1849         struct hci_ev_cmd_complete *evt;
1850
1851         skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_ATOMIC);
1852         if (!skb)
1853                 return -ENOMEM;
1854
1855         hdr = (struct hci_event_hdr *)skb_put(skb, sizeof(*hdr));
1856         hdr->evt = HCI_EV_CMD_COMPLETE;
1857         hdr->plen = sizeof(*evt) + 1;
1858
1859         evt = (struct hci_ev_cmd_complete *)skb_put(skb, sizeof(*evt));
1860         evt->ncmd = 0x01;
1861         evt->opcode = cpu_to_le16(opcode);
1862
1863         *skb_put(skb, 1) = 0x00;
1864
1865         bt_cb(skb)->pkt_type = HCI_EVENT_PKT;
1866
1867         return hci_recv_frame(hdev, skb);
1868 }
1869
1870 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
1871                                  int count)
1872 {
1873         /* When the device is in bootloader mode, then it can send
1874          * events via the bulk endpoint. These events are treated the
1875          * same way as the ones received from the interrupt endpoint.
1876          */
1877         if (test_bit(BTUSB_BOOTLOADER, &data->flags))
1878                 return btusb_recv_intr(data, buffer, count);
1879
1880         return btusb_recv_bulk(data, buffer, count);
1881 }
1882
1883 static void btusb_intel_bootup(struct btusb_data *data, const void *ptr,
1884                                unsigned int len)
1885 {
1886         const struct intel_bootup *evt = ptr;
1887
1888         if (len != sizeof(*evt))
1889                 return;
1890
1891         if (test_and_clear_bit(BTUSB_BOOTING, &data->flags)) {
1892                 smp_mb__after_atomic();
1893                 wake_up_bit(&data->flags, BTUSB_BOOTING);
1894         }
1895 }
1896
1897 static void btusb_intel_secure_send_result(struct btusb_data *data,
1898                                            const void *ptr, unsigned int len)
1899 {
1900         const struct intel_secure_send_result *evt = ptr;
1901
1902         if (len != sizeof(*evt))
1903                 return;
1904
1905         if (evt->result)
1906                 set_bit(BTUSB_FIRMWARE_FAILED, &data->flags);
1907
1908         if (test_and_clear_bit(BTUSB_DOWNLOADING, &data->flags) &&
1909             test_bit(BTUSB_FIRMWARE_LOADED, &data->flags)) {
1910                 smp_mb__after_atomic();
1911                 wake_up_bit(&data->flags, BTUSB_DOWNLOADING);
1912         }
1913 }
1914
1915 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
1916 {
1917         struct btusb_data *data = hci_get_drvdata(hdev);
1918
1919         if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1920                 struct hci_event_hdr *hdr = (void *)skb->data;
1921
1922                 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
1923                     hdr->plen > 0) {
1924                         const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
1925                         unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
1926
1927                         switch (skb->data[2]) {
1928                         case 0x02:
1929                                 /* When switching to the operational firmware
1930                                  * the device sends a vendor specific event
1931                                  * indicating that the bootup completed.
1932                                  */
1933                                 btusb_intel_bootup(data, ptr, len);
1934                                 break;
1935                         case 0x06:
1936                                 /* When the firmware loading completes the
1937                                  * device sends out a vendor specific event
1938                                  * indicating the result of the firmware
1939                                  * loading.
1940                                  */
1941                                 btusb_intel_secure_send_result(data, ptr, len);
1942                                 break;
1943                         }
1944                 }
1945         }
1946
1947         return hci_recv_frame(hdev, skb);
1948 }
1949
1950 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
1951 {
1952         struct btusb_data *data = hci_get_drvdata(hdev);
1953         struct urb *urb;
1954
1955         BT_DBG("%s", hdev->name);
1956
1957         switch (bt_cb(skb)->pkt_type) {
1958         case HCI_COMMAND_PKT:
1959                 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1960                         struct hci_command_hdr *cmd = (void *)skb->data;
1961                         __u16 opcode = le16_to_cpu(cmd->opcode);
1962
1963                         /* When in bootloader mode and the command 0xfc09
1964                          * is received, it needs to be send down the
1965                          * bulk endpoint. So allocate a bulk URB instead.
1966                          */
1967                         if (opcode == 0xfc09)
1968                                 urb = alloc_bulk_urb(hdev, skb);
1969                         else
1970                                 urb = alloc_ctrl_urb(hdev, skb);
1971
1972                         /* When the 0xfc01 command is issued to boot into
1973                          * the operational firmware, it will actually not
1974                          * send a command complete event. To keep the flow
1975                          * control working inject that event here.
1976                          */
1977                         if (opcode == 0xfc01)
1978                                 inject_cmd_complete(hdev, opcode);
1979                 } else {
1980                         urb = alloc_ctrl_urb(hdev, skb);
1981                 }
1982                 if (IS_ERR(urb))
1983                         return PTR_ERR(urb);
1984
1985                 hdev->stat.cmd_tx++;
1986                 return submit_or_queue_tx_urb(hdev, urb);
1987
1988         case HCI_ACLDATA_PKT:
1989                 urb = alloc_bulk_urb(hdev, skb);
1990                 if (IS_ERR(urb))
1991                         return PTR_ERR(urb);
1992
1993                 hdev->stat.acl_tx++;
1994                 return submit_or_queue_tx_urb(hdev, urb);
1995
1996         case HCI_SCODATA_PKT:
1997                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1998                         return -ENODEV;
1999
2000                 urb = alloc_isoc_urb(hdev, skb);
2001                 if (IS_ERR(urb))
2002                         return PTR_ERR(urb);
2003
2004                 hdev->stat.sco_tx++;
2005                 return submit_tx_urb(hdev, urb);
2006         }
2007
2008         return -EILSEQ;
2009 }
2010
2011 static int btusb_setup_intel_new(struct hci_dev *hdev)
2012 {
2013         static const u8 reset_param[] = { 0x00, 0x01, 0x00, 0x01,
2014                                           0x00, 0x08, 0x04, 0x00 };
2015         struct btusb_data *data = hci_get_drvdata(hdev);
2016         struct sk_buff *skb;
2017         struct intel_version *ver;
2018         struct intel_boot_params *params;
2019         const struct firmware *fw;
2020         const u8 *fw_ptr;
2021         u32 frag_len;
2022         char fwname[64];
2023         ktime_t calltime, delta, rettime;
2024         unsigned long long duration;
2025         int err;
2026
2027         BT_DBG("%s", hdev->name);
2028
2029         calltime = ktime_get();
2030
2031         /* Read the Intel version information to determine if the device
2032          * is in bootloader mode or if it already has operational firmware
2033          * loaded.
2034          */
2035         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
2036         if (IS_ERR(skb)) {
2037                 BT_ERR("%s: Reading Intel version information failed (%ld)",
2038                        hdev->name, PTR_ERR(skb));
2039                 return PTR_ERR(skb);
2040         }
2041
2042         if (skb->len != sizeof(*ver)) {
2043                 BT_ERR("%s: Intel version event size mismatch", hdev->name);
2044                 kfree_skb(skb);
2045                 return -EILSEQ;
2046         }
2047
2048         ver = (struct intel_version *)skb->data;
2049
2050         /* The hardware platform number has a fixed value of 0x37 and
2051          * for now only accept this single value.
2052          */
2053         if (ver->hw_platform != 0x37) {
2054                 BT_ERR("%s: Unsupported Intel hardware platform (%u)",
2055                        hdev->name, ver->hw_platform);
2056                 kfree_skb(skb);
2057                 return -EINVAL;
2058         }
2059
2060         /* At the moment the iBT 3.0 hardware variants 0x0b (LnP/SfP)
2061          * and 0x0c (WsP) are supported by this firmware loading method.
2062          *
2063          * This check has been put in place to ensure correct forward
2064          * compatibility options when newer hardware variants come along.
2065          */
2066         if (ver->hw_variant != 0x0b && ver->hw_variant != 0x0c) {
2067                 BT_ERR("%s: Unsupported Intel hardware variant (%u)",
2068                        hdev->name, ver->hw_variant);
2069                 kfree_skb(skb);
2070                 return -EINVAL;
2071         }
2072
2073         btintel_version_info(hdev, ver);
2074
2075         /* The firmware variant determines if the device is in bootloader
2076          * mode or is running operational firmware. The value 0x06 identifies
2077          * the bootloader and the value 0x23 identifies the operational
2078          * firmware.
2079          *
2080          * When the operational firmware is already present, then only
2081          * the check for valid Bluetooth device address is needed. This
2082          * determines if the device will be added as configured or
2083          * unconfigured controller.
2084          *
2085          * It is not possible to use the Secure Boot Parameters in this
2086          * case since that command is only available in bootloader mode.
2087          */
2088         if (ver->fw_variant == 0x23) {
2089                 kfree_skb(skb);
2090                 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2091                 btintel_check_bdaddr(hdev);
2092                 return 0;
2093         }
2094
2095         /* If the device is not in bootloader mode, then the only possible
2096          * choice is to return an error and abort the device initialization.
2097          */
2098         if (ver->fw_variant != 0x06) {
2099                 BT_ERR("%s: Unsupported Intel firmware variant (%u)",
2100                        hdev->name, ver->fw_variant);
2101                 kfree_skb(skb);
2102                 return -ENODEV;
2103         }
2104
2105         kfree_skb(skb);
2106
2107         /* Read the secure boot parameters to identify the operating
2108          * details of the bootloader.
2109          */
2110         skb = __hci_cmd_sync(hdev, 0xfc0d, 0, NULL, HCI_INIT_TIMEOUT);
2111         if (IS_ERR(skb)) {
2112                 BT_ERR("%s: Reading Intel boot parameters failed (%ld)",
2113                        hdev->name, PTR_ERR(skb));
2114                 return PTR_ERR(skb);
2115         }
2116
2117         if (skb->len != sizeof(*params)) {
2118                 BT_ERR("%s: Intel boot parameters size mismatch", hdev->name);
2119                 kfree_skb(skb);
2120                 return -EILSEQ;
2121         }
2122
2123         params = (struct intel_boot_params *)skb->data;
2124
2125         BT_INFO("%s: Device revision is %u", hdev->name,
2126                 le16_to_cpu(params->dev_revid));
2127
2128         BT_INFO("%s: Secure boot is %s", hdev->name,
2129                 params->secure_boot ? "enabled" : "disabled");
2130
2131         BT_INFO("%s: OTP lock is %s", hdev->name,
2132                 params->otp_lock ? "enabled" : "disabled");
2133
2134         BT_INFO("%s: API lock is %s", hdev->name,
2135                 params->api_lock ? "enabled" : "disabled");
2136
2137         BT_INFO("%s: Debug lock is %s", hdev->name,
2138                 params->debug_lock ? "enabled" : "disabled");
2139
2140         BT_INFO("%s: Minimum firmware build %u week %u %u", hdev->name,
2141                 params->min_fw_build_nn, params->min_fw_build_cw,
2142                 2000 + params->min_fw_build_yy);
2143
2144         /* It is required that every single firmware fragment is acknowledged
2145          * with a command complete event. If the boot parameters indicate
2146          * that this bootloader does not send them, then abort the setup.
2147          */
2148         if (params->limited_cce != 0x00) {
2149                 BT_ERR("%s: Unsupported Intel firmware loading method (%u)",
2150                        hdev->name, params->limited_cce);
2151                 kfree_skb(skb);
2152                 return -EINVAL;
2153         }
2154
2155         /* If the OTP has no valid Bluetooth device address, then there will
2156          * also be no valid address for the operational firmware.
2157          */
2158         if (!bacmp(&params->otp_bdaddr, BDADDR_ANY)) {
2159                 BT_INFO("%s: No device address configured", hdev->name);
2160                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2161         }
2162
2163         /* With this Intel bootloader only the hardware variant and device
2164          * revision information are used to select the right firmware.
2165          *
2166          * Currently this bootloader support is limited to hardware variant
2167          * iBT 3.0 (LnP/SfP) which is identified by the value 11 (0x0b).
2168          */
2169         snprintf(fwname, sizeof(fwname), "intel/ibt-11-%u.sfi",
2170                  le16_to_cpu(params->dev_revid));
2171
2172         err = request_firmware(&fw, fwname, &hdev->dev);
2173         if (err < 0) {
2174                 BT_ERR("%s: Failed to load Intel firmware file (%d)",
2175                        hdev->name, err);
2176                 kfree_skb(skb);
2177                 return err;
2178         }
2179
2180         BT_INFO("%s: Found device firmware: %s", hdev->name, fwname);
2181
2182         /* Save the DDC file name for later use to apply once the firmware
2183          * downloading is done.
2184          */
2185         snprintf(fwname, sizeof(fwname), "intel/ibt-11-%u.ddc",
2186                  le16_to_cpu(params->dev_revid));
2187
2188         kfree_skb(skb);
2189
2190         if (fw->size < 644) {
2191                 BT_ERR("%s: Invalid size of firmware file (%zu)",
2192                        hdev->name, fw->size);
2193                 err = -EBADF;
2194                 goto done;
2195         }
2196
2197         set_bit(BTUSB_DOWNLOADING, &data->flags);
2198
2199         /* Start the firmware download transaction with the Init fragment
2200          * represented by the 128 bytes of CSS header.
2201          */
2202         err = btintel_secure_send(hdev, 0x00, 128, fw->data);
2203         if (err < 0) {
2204                 BT_ERR("%s: Failed to send firmware header (%d)",
2205                        hdev->name, err);
2206                 goto done;
2207         }
2208
2209         /* Send the 256 bytes of public key information from the firmware
2210          * as the PKey fragment.
2211          */
2212         err = btintel_secure_send(hdev, 0x03, 256, fw->data + 128);
2213         if (err < 0) {
2214                 BT_ERR("%s: Failed to send firmware public key (%d)",
2215                        hdev->name, err);
2216                 goto done;
2217         }
2218
2219         /* Send the 256 bytes of signature information from the firmware
2220          * as the Sign fragment.
2221          */
2222         err = btintel_secure_send(hdev, 0x02, 256, fw->data + 388);
2223         if (err < 0) {
2224                 BT_ERR("%s: Failed to send firmware signature (%d)",
2225                        hdev->name, err);
2226                 goto done;
2227         }
2228
2229         fw_ptr = fw->data + 644;
2230         frag_len = 0;
2231
2232         while (fw_ptr - fw->data < fw->size) {
2233                 struct hci_command_hdr *cmd = (void *)(fw_ptr + frag_len);
2234
2235                 frag_len += sizeof(*cmd) + cmd->plen;
2236
2237                 /* The parameter length of the secure send command requires
2238                  * a 4 byte alignment. It happens so that the firmware file
2239                  * contains proper Intel_NOP commands to align the fragments
2240                  * as needed.
2241                  *
2242                  * Send set of commands with 4 byte alignment from the
2243                  * firmware data buffer as a single Data fragement.
2244                  */
2245                 if (!(frag_len % 4)) {
2246                         err = btintel_secure_send(hdev, 0x01, frag_len, fw_ptr);
2247                         if (err < 0) {
2248                                 BT_ERR("%s: Failed to send firmware data (%d)",
2249                                        hdev->name, err);
2250                                 goto done;
2251                         }
2252
2253                         fw_ptr += frag_len;
2254                         frag_len = 0;
2255                 }
2256         }
2257
2258         set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2259
2260         BT_INFO("%s: Waiting for firmware download to complete", hdev->name);
2261
2262         /* Before switching the device into operational mode and with that
2263          * booting the loaded firmware, wait for the bootloader notification
2264          * that all fragments have been successfully received.
2265          *
2266          * When the event processing receives the notification, then the
2267          * BTUSB_DOWNLOADING flag will be cleared.
2268          *
2269          * The firmware loading should not take longer than 5 seconds
2270          * and thus just timeout if that happens and fail the setup
2271          * of this device.
2272          */
2273         err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
2274                                   TASK_INTERRUPTIBLE,
2275                                   msecs_to_jiffies(5000));
2276         if (err == 1) {
2277                 BT_ERR("%s: Firmware loading interrupted", hdev->name);
2278                 err = -EINTR;
2279                 goto done;
2280         }
2281
2282         if (err) {
2283                 BT_ERR("%s: Firmware loading timeout", hdev->name);
2284                 err = -ETIMEDOUT;
2285                 goto done;
2286         }
2287
2288         if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) {
2289                 BT_ERR("%s: Firmware loading failed", hdev->name);
2290                 err = -ENOEXEC;
2291                 goto done;
2292         }
2293
2294         rettime = ktime_get();
2295         delta = ktime_sub(rettime, calltime);
2296         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2297
2298         BT_INFO("%s: Firmware loaded in %llu usecs", hdev->name, duration);
2299
2300 done:
2301         release_firmware(fw);
2302
2303         if (err < 0)
2304                 return err;
2305
2306         calltime = ktime_get();
2307
2308         set_bit(BTUSB_BOOTING, &data->flags);
2309
2310         skb = __hci_cmd_sync(hdev, 0xfc01, sizeof(reset_param), reset_param,
2311                              HCI_INIT_TIMEOUT);
2312         if (IS_ERR(skb))
2313                 return PTR_ERR(skb);
2314
2315         kfree_skb(skb);
2316
2317         /* The bootloader will not indicate when the device is ready. This
2318          * is done by the operational firmware sending bootup notification.
2319          *
2320          * Booting into operational firmware should not take longer than
2321          * 1 second. However if that happens, then just fail the setup
2322          * since something went wrong.
2323          */
2324         BT_INFO("%s: Waiting for device to boot", hdev->name);
2325
2326         err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING,
2327                                   TASK_INTERRUPTIBLE,
2328                                   msecs_to_jiffies(1000));
2329
2330         if (err == 1) {
2331                 BT_ERR("%s: Device boot interrupted", hdev->name);
2332                 return -EINTR;
2333         }
2334
2335         if (err) {
2336                 BT_ERR("%s: Device boot timeout", hdev->name);
2337                 return -ETIMEDOUT;
2338         }
2339
2340         rettime = ktime_get();
2341         delta = ktime_sub(rettime, calltime);
2342         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2343
2344         BT_INFO("%s: Device booted in %llu usecs", hdev->name, duration);
2345
2346         clear_bit(BTUSB_BOOTLOADER, &data->flags);
2347
2348         /* Once the device is running in operational mode, it needs to apply
2349          * the device configuration (DDC) parameters.
2350          *
2351          * The device can work without DDC parameters, so even if it fails
2352          * to load the file, no need to fail the setup.
2353          */
2354         btintel_load_ddc_config(hdev, fwname);
2355
2356         /* Set the event mask for Intel specific vendor events. This enables
2357          * a few extra events that are useful during general operation. It
2358          * does not enable any debugging related events.
2359          *
2360          * The device will function correctly without these events enabled
2361          * and thus no need to fail the setup.
2362          */
2363         btintel_set_event_mask(hdev, false);
2364
2365         return 0;
2366 }
2367
2368 static int btusb_shutdown_intel(struct hci_dev *hdev)
2369 {
2370         struct sk_buff *skb;
2371         long ret;
2372
2373         /* Some platforms have an issue with BT LED when the interface is
2374          * down or BT radio is turned off, which takes 5 seconds to BT LED
2375          * goes off. This command turns off the BT LED immediately.
2376          */
2377         skb = __hci_cmd_sync(hdev, 0xfc3f, 0, NULL, HCI_INIT_TIMEOUT);
2378         if (IS_ERR(skb)) {
2379                 ret = PTR_ERR(skb);
2380                 BT_ERR("%s: turning off Intel device LED failed (%ld)",
2381                        hdev->name, ret);
2382                 return ret;
2383         }
2384         kfree_skb(skb);
2385
2386         return 0;
2387 }
2388
2389 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
2390                                     const bdaddr_t *bdaddr)
2391 {
2392         struct sk_buff *skb;
2393         u8 buf[8];
2394         long ret;
2395
2396         buf[0] = 0xfe;
2397         buf[1] = sizeof(bdaddr_t);
2398         memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
2399
2400         skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2401         if (IS_ERR(skb)) {
2402                 ret = PTR_ERR(skb);
2403                 BT_ERR("%s: changing Marvell device address failed (%ld)",
2404                        hdev->name, ret);
2405                 return ret;
2406         }
2407         kfree_skb(skb);
2408
2409         return 0;
2410 }
2411
2412 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
2413                                     const bdaddr_t *bdaddr)
2414 {
2415         struct sk_buff *skb;
2416         u8 buf[10];
2417         long ret;
2418
2419         buf[0] = 0x01;
2420         buf[1] = 0x01;
2421         buf[2] = 0x00;
2422         buf[3] = sizeof(bdaddr_t);
2423         memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
2424
2425         skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2426         if (IS_ERR(skb)) {
2427                 ret = PTR_ERR(skb);
2428                 BT_ERR("%s: Change address command failed (%ld)",
2429                        hdev->name, ret);
2430                 return ret;
2431         }
2432         kfree_skb(skb);
2433
2434         return 0;
2435 }
2436
2437 #define QCA_DFU_PACKET_LEN      4096
2438
2439 #define QCA_GET_TARGET_VERSION  0x09
2440 #define QCA_CHECK_STATUS        0x05
2441 #define QCA_DFU_DOWNLOAD        0x01
2442
2443 #define QCA_SYSCFG_UPDATED      0x40
2444 #define QCA_PATCH_UPDATED       0x80
2445 #define QCA_DFU_TIMEOUT         3000
2446
2447 struct qca_version {
2448         __le32  rom_version;
2449         __le32  patch_version;
2450         __le32  ram_version;
2451         __le32  ref_clock;
2452         __u8    reserved[4];
2453 } __packed;
2454
2455 struct qca_rampatch_version {
2456         __le16  rom_version;
2457         __le16  patch_version;
2458 } __packed;
2459
2460 struct qca_device_info {
2461         u32     rom_version;
2462         u8      rampatch_hdr;   /* length of header in rampatch */
2463         u8      nvm_hdr;        /* length of header in NVM */
2464         u8      ver_offset;     /* offset of version structure in rampatch */
2465 };
2466
2467 static const struct qca_device_info qca_devices_table[] = {
2468         { 0x00000100, 20, 4, 10 }, /* Rome 1.0 */
2469         { 0x00000101, 20, 4, 10 }, /* Rome 1.1 */
2470         { 0x00000200, 28, 4, 18 }, /* Rome 2.0 */
2471         { 0x00000201, 28, 4, 18 }, /* Rome 2.1 */
2472         { 0x00000300, 28, 4, 18 }, /* Rome 3.0 */
2473         { 0x00000302, 28, 4, 18 }, /* Rome 3.2 */
2474 };
2475
2476 static int btusb_qca_send_vendor_req(struct hci_dev *hdev, u8 request,
2477                                      void *data, u16 size)
2478 {
2479         struct btusb_data *btdata = hci_get_drvdata(hdev);
2480         struct usb_device *udev = btdata->udev;
2481         int pipe, err;
2482         u8 *buf;
2483
2484         buf = kmalloc(size, GFP_KERNEL);
2485         if (!buf)
2486                 return -ENOMEM;
2487
2488         /* Found some of USB hosts have IOT issues with ours so that we should
2489          * not wait until HCI layer is ready.
2490          */
2491         pipe = usb_rcvctrlpipe(udev, 0);
2492         err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
2493                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2494         if (err < 0) {
2495                 BT_ERR("%s: Failed to access otp area (%d)", hdev->name, err);
2496                 goto done;
2497         }
2498
2499         memcpy(data, buf, size);
2500
2501 done:
2502         kfree(buf);
2503
2504         return err;
2505 }
2506
2507 static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
2508                                        const struct firmware *firmware,
2509                                        size_t hdr_size)
2510 {
2511         struct btusb_data *btdata = hci_get_drvdata(hdev);
2512         struct usb_device *udev = btdata->udev;
2513         size_t count, size, sent = 0;
2514         int pipe, len, err;
2515         u8 *buf;
2516
2517         buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
2518         if (!buf)
2519                 return -ENOMEM;
2520
2521         count = firmware->size;
2522
2523         size = min_t(size_t, count, hdr_size);
2524         memcpy(buf, firmware->data, size);
2525
2526         /* USB patches should go down to controller through USB path
2527          * because binary format fits to go down through USB channel.
2528          * USB control path is for patching headers and USB bulk is for
2529          * patch body.
2530          */
2531         pipe = usb_sndctrlpipe(udev, 0);
2532         err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
2533                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2534         if (err < 0) {
2535                 BT_ERR("%s: Failed to send headers (%d)", hdev->name, err);
2536                 goto done;
2537         }
2538
2539         sent += size;
2540         count -= size;
2541
2542         while (count) {
2543                 size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
2544
2545                 memcpy(buf, firmware->data + sent, size);
2546
2547                 pipe = usb_sndbulkpipe(udev, 0x02);
2548                 err = usb_bulk_msg(udev, pipe, buf, size, &len,
2549                                    QCA_DFU_TIMEOUT);
2550                 if (err < 0) {
2551                         BT_ERR("%s: Failed to send body at %zd of %zd (%d)",
2552                                hdev->name, sent, firmware->size, err);
2553                         break;
2554                 }
2555
2556                 if (size != len) {
2557                         BT_ERR("%s: Failed to get bulk buffer", hdev->name);
2558                         err = -EILSEQ;
2559                         break;
2560                 }
2561
2562                 sent  += size;
2563                 count -= size;
2564         }
2565
2566 done:
2567         kfree(buf);
2568         return err;
2569 }
2570
2571 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
2572                                          struct qca_version *ver,
2573                                          const struct qca_device_info *info)
2574 {
2575         struct qca_rampatch_version *rver;
2576         const struct firmware *fw;
2577         u32 ver_rom, ver_patch;
2578         u16 rver_rom, rver_patch;
2579         char fwname[64];
2580         int err;
2581
2582         ver_rom = le32_to_cpu(ver->rom_version);
2583         ver_patch = le32_to_cpu(ver->patch_version);
2584
2585         snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom);
2586
2587         err = request_firmware(&fw, fwname, &hdev->dev);
2588         if (err) {
2589                 BT_ERR("%s: failed to request rampatch file: %s (%d)",
2590                        hdev->name, fwname, err);
2591                 return err;
2592         }
2593
2594         BT_INFO("%s: using rampatch file: %s", hdev->name, fwname);
2595
2596         rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
2597         rver_rom = le16_to_cpu(rver->rom_version);
2598         rver_patch = le16_to_cpu(rver->patch_version);
2599
2600         BT_INFO("%s: QCA: patch rome 0x%x build 0x%x, firmware rome 0x%x "
2601                 "build 0x%x", hdev->name, rver_rom, rver_patch, ver_rom,
2602                 ver_patch);
2603
2604         if (rver_rom != ver_rom || rver_patch <= ver_patch) {
2605                 BT_ERR("%s: rampatch file version did not match with firmware",
2606                        hdev->name);
2607                 err = -EINVAL;
2608                 goto done;
2609         }
2610
2611         err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
2612
2613 done:
2614         release_firmware(fw);
2615
2616         return err;
2617 }
2618
2619 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
2620                                     struct qca_version *ver,
2621                                     const struct qca_device_info *info)
2622 {
2623         const struct firmware *fw;
2624         char fwname[64];
2625         int err;
2626
2627         snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x.bin",
2628                  le32_to_cpu(ver->rom_version));
2629
2630         err = request_firmware(&fw, fwname, &hdev->dev);
2631         if (err) {
2632                 BT_ERR("%s: failed to request NVM file: %s (%d)",
2633                        hdev->name, fwname, err);
2634                 return err;
2635         }
2636
2637         BT_INFO("%s: using NVM file: %s", hdev->name, fwname);
2638
2639         err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
2640
2641         release_firmware(fw);
2642
2643         return err;
2644 }
2645
2646 static int btusb_setup_qca(struct hci_dev *hdev)
2647 {
2648         const struct qca_device_info *info = NULL;
2649         struct qca_version ver;
2650         u32 ver_rom;
2651         u8 status;
2652         int i, err;
2653
2654         err = btusb_qca_send_vendor_req(hdev, QCA_GET_TARGET_VERSION, &ver,
2655                                         sizeof(ver));
2656         if (err < 0)
2657                 return err;
2658
2659         ver_rom = le32_to_cpu(ver.rom_version);
2660         for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
2661                 if (ver_rom == qca_devices_table[i].rom_version)
2662                         info = &qca_devices_table[i];
2663         }
2664         if (!info) {
2665                 BT_ERR("%s: don't support firmware rome 0x%x", hdev->name,
2666                        ver_rom);
2667                 return -ENODEV;
2668         }
2669
2670         err = btusb_qca_send_vendor_req(hdev, QCA_CHECK_STATUS, &status,
2671                                         sizeof(status));
2672         if (err < 0)
2673                 return err;
2674
2675         if (!(status & QCA_PATCH_UPDATED)) {
2676                 err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
2677                 if (err < 0)
2678                         return err;
2679         }
2680
2681         if (!(status & QCA_SYSCFG_UPDATED)) {
2682                 err = btusb_setup_qca_load_nvm(hdev, &ver, info);
2683                 if (err < 0)
2684                         return err;
2685         }
2686
2687         return 0;
2688 }
2689
2690 #ifdef CONFIG_BT_HCIBTUSB_BCM
2691 static inline int __set_diag_interface(struct hci_dev *hdev)
2692 {
2693         struct btusb_data *data = hci_get_drvdata(hdev);
2694         struct usb_interface *intf = data->diag;
2695         int i;
2696
2697         if (!data->diag)
2698                 return -ENODEV;
2699
2700         data->diag_tx_ep = NULL;
2701         data->diag_rx_ep = NULL;
2702
2703         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2704                 struct usb_endpoint_descriptor *ep_desc;
2705
2706                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2707
2708                 if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
2709                         data->diag_tx_ep = ep_desc;
2710                         continue;
2711                 }
2712
2713                 if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
2714                         data->diag_rx_ep = ep_desc;
2715                         continue;
2716                 }
2717         }
2718
2719         if (!data->diag_tx_ep || !data->diag_rx_ep) {
2720                 BT_ERR("%s invalid diagnostic descriptors", hdev->name);
2721                 return -ENODEV;
2722         }
2723
2724         return 0;
2725 }
2726
2727 static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable)
2728 {
2729         struct btusb_data *data = hci_get_drvdata(hdev);
2730         struct sk_buff *skb;
2731         struct urb *urb;
2732         unsigned int pipe;
2733
2734         if (!data->diag_tx_ep)
2735                 return ERR_PTR(-ENODEV);
2736
2737         urb = usb_alloc_urb(0, GFP_KERNEL);
2738         if (!urb)
2739                 return ERR_PTR(-ENOMEM);
2740
2741         skb = bt_skb_alloc(2, GFP_KERNEL);
2742         if (!skb) {
2743                 usb_free_urb(urb);
2744                 return ERR_PTR(-ENOMEM);
2745         }
2746
2747         *skb_put(skb, 1) = 0xf0;
2748         *skb_put(skb, 1) = enable;
2749
2750         pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress);
2751
2752         usb_fill_bulk_urb(urb, data->udev, pipe,
2753                           skb->data, skb->len, btusb_tx_complete, skb);
2754
2755         skb->dev = (void *)hdev;
2756
2757         return urb;
2758 }
2759
2760 static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable)
2761 {
2762         struct btusb_data *data = hci_get_drvdata(hdev);
2763         struct urb *urb;
2764
2765         if (!data->diag)
2766                 return -ENODEV;
2767
2768         if (!test_bit(HCI_RUNNING, &hdev->flags))
2769                 return -ENETDOWN;
2770
2771         urb = alloc_diag_urb(hdev, enable);
2772         if (IS_ERR(urb))
2773                 return PTR_ERR(urb);
2774
2775         return submit_or_queue_tx_urb(hdev, urb);
2776 }
2777 #endif
2778
2779 static int btusb_probe(struct usb_interface *intf,
2780                        const struct usb_device_id *id)
2781 {
2782         struct usb_endpoint_descriptor *ep_desc;
2783         struct btusb_data *data;
2784         struct hci_dev *hdev;
2785         unsigned ifnum_base;
2786         int i, err;
2787
2788         BT_DBG("intf %p id %p", intf, id);
2789
2790         /* interface numbers are hardcoded in the spec */
2791         if (intf->cur_altsetting->desc.bInterfaceNumber != 0) {
2792                 if (!(id->driver_info & BTUSB_IFNUM_2))
2793                         return -ENODEV;
2794                 if (intf->cur_altsetting->desc.bInterfaceNumber != 2)
2795                         return -ENODEV;
2796         }
2797
2798         ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber;
2799
2800         if (!id->driver_info) {
2801                 const struct usb_device_id *match;
2802
2803                 match = usb_match_id(intf, blacklist_table);
2804                 if (match)
2805                         id = match;
2806         }
2807
2808         if (id->driver_info == BTUSB_IGNORE)
2809                 return -ENODEV;
2810
2811         if (id->driver_info & BTUSB_ATH3012) {
2812                 struct usb_device *udev = interface_to_usbdev(intf);
2813
2814                 /* Old firmware would otherwise let ath3k driver load
2815                  * patch and sysconfig files */
2816                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
2817                         return -ENODEV;
2818         }
2819
2820         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
2821         if (!data)
2822                 return -ENOMEM;
2823
2824         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2825                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2826
2827                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
2828                         data->intr_ep = ep_desc;
2829                         continue;
2830                 }
2831
2832                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
2833                         data->bulk_tx_ep = ep_desc;
2834                         continue;
2835                 }
2836
2837                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
2838                         data->bulk_rx_ep = ep_desc;
2839                         continue;
2840                 }
2841         }
2842
2843         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
2844                 return -ENODEV;
2845
2846         if (id->driver_info & BTUSB_AMP) {
2847                 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
2848                 data->cmdreq = 0x2b;
2849         } else {
2850                 data->cmdreq_type = USB_TYPE_CLASS;
2851                 data->cmdreq = 0x00;
2852         }
2853
2854         data->udev = interface_to_usbdev(intf);
2855         data->intf = intf;
2856
2857         INIT_WORK(&data->work, btusb_work);
2858         INIT_WORK(&data->waker, btusb_waker);
2859         init_usb_anchor(&data->deferred);
2860         init_usb_anchor(&data->tx_anchor);
2861         spin_lock_init(&data->txlock);
2862
2863         init_usb_anchor(&data->intr_anchor);
2864         init_usb_anchor(&data->bulk_anchor);
2865         init_usb_anchor(&data->isoc_anchor);
2866         init_usb_anchor(&data->diag_anchor);
2867         spin_lock_init(&data->rxlock);
2868
2869         if (id->driver_info & BTUSB_INTEL_NEW) {
2870                 data->recv_event = btusb_recv_event_intel;
2871                 data->recv_bulk = btusb_recv_bulk_intel;
2872                 set_bit(BTUSB_BOOTLOADER, &data->flags);
2873         } else {
2874                 data->recv_event = hci_recv_frame;
2875                 data->recv_bulk = btusb_recv_bulk;
2876         }
2877
2878         hdev = hci_alloc_dev();
2879         if (!hdev)
2880                 return -ENOMEM;
2881
2882         hdev->bus = HCI_USB;
2883         hci_set_drvdata(hdev, data);
2884
2885         if (id->driver_info & BTUSB_AMP)
2886                 hdev->dev_type = HCI_AMP;
2887         else
2888                 hdev->dev_type = HCI_BREDR;
2889
2890         data->hdev = hdev;
2891
2892         SET_HCIDEV_DEV(hdev, &intf->dev);
2893
2894         hdev->open   = btusb_open;
2895         hdev->close  = btusb_close;
2896         hdev->flush  = btusb_flush;
2897         hdev->send   = btusb_send_frame;
2898         hdev->notify = btusb_notify;
2899
2900         if (id->driver_info & BTUSB_BCM2045)
2901                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
2902
2903         if (id->driver_info & BTUSB_BCM92035)
2904                 hdev->setup = btusb_setup_bcm92035;
2905
2906 #ifdef CONFIG_BT_HCIBTUSB_BCM
2907         if (id->driver_info & BTUSB_BCM_PATCHRAM) {
2908                 hdev->manufacturer = 15;
2909                 hdev->setup = btbcm_setup_patchram;
2910                 hdev->set_diag = btusb_bcm_set_diag;
2911                 hdev->set_bdaddr = btbcm_set_bdaddr;
2912
2913                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
2914                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
2915         }
2916
2917         if (id->driver_info & BTUSB_BCM_APPLE) {
2918                 hdev->manufacturer = 15;
2919                 hdev->setup = btbcm_setup_apple;
2920                 hdev->set_diag = btusb_bcm_set_diag;
2921
2922                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
2923                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
2924         }
2925 #endif
2926
2927         if (id->driver_info & BTUSB_INTEL) {
2928                 hdev->manufacturer = 2;
2929                 hdev->setup = btusb_setup_intel;
2930                 hdev->shutdown = btusb_shutdown_intel;
2931                 hdev->set_diag = btintel_set_diag_mfg;
2932                 hdev->set_bdaddr = btintel_set_bdaddr;
2933                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2934                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
2935                 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
2936         }
2937
2938         if (id->driver_info & BTUSB_INTEL_NEW) {
2939                 hdev->manufacturer = 2;
2940                 hdev->send = btusb_send_frame_intel;
2941                 hdev->setup = btusb_setup_intel_new;
2942                 hdev->hw_error = btintel_hw_error;
2943                 hdev->set_diag = btintel_set_diag;
2944                 hdev->set_bdaddr = btintel_set_bdaddr;
2945                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2946                 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
2947         }
2948
2949         if (id->driver_info & BTUSB_MARVELL)
2950                 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
2951
2952         if (id->driver_info & BTUSB_SWAVE) {
2953                 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
2954                 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
2955         }
2956
2957         if (id->driver_info & BTUSB_INTEL_BOOT) {
2958                 hdev->manufacturer = 2;
2959                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
2960         }
2961
2962         if (id->driver_info & BTUSB_ATH3012) {
2963                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
2964                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
2965                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2966         }
2967
2968         if (id->driver_info & BTUSB_QCA_ROME) {
2969                 data->setup_on_usb = btusb_setup_qca;
2970                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
2971         }
2972
2973 #ifdef CONFIG_BT_HCIBTUSB_RTL
2974         if (id->driver_info & BTUSB_REALTEK) {
2975                 hdev->setup = btrtl_setup_realtek;
2976
2977                 /* Realtek devices lose their updated firmware over suspend,
2978                  * but the USB hub doesn't notice any status change.
2979                  * Explicitly request a device reset on resume.
2980                  */
2981                 set_bit(BTUSB_RESET_RESUME, &data->flags);
2982         }
2983 #endif
2984
2985         if (id->driver_info & BTUSB_AMP) {
2986                 /* AMP controllers do not support SCO packets */
2987                 data->isoc = NULL;
2988         } else {
2989                 /* Interface orders are hardcoded in the specification */
2990                 data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1);
2991         }
2992
2993         if (!reset)
2994                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2995
2996         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
2997                 if (!disable_scofix)
2998                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
2999         }
3000
3001         if (id->driver_info & BTUSB_BROKEN_ISOC)
3002                 data->isoc = NULL;
3003
3004         if (id->driver_info & BTUSB_DIGIANSWER) {
3005                 data->cmdreq_type = USB_TYPE_VENDOR;
3006                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3007         }
3008
3009         if (id->driver_info & BTUSB_CSR) {
3010                 struct usb_device *udev = data->udev;
3011                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
3012
3013                 /* Old firmware would otherwise execute USB reset */
3014                 if (bcdDevice < 0x117)
3015                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3016
3017                 /* Fake CSR devices with broken commands */
3018                 if (bcdDevice <= 0x100 || bcdDevice == 0x134)
3019                         hdev->setup = btusb_setup_csr;
3020
3021                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3022         }
3023
3024         if (id->driver_info & BTUSB_SNIFFER) {
3025                 struct usb_device *udev = data->udev;
3026
3027                 /* New sniffer firmware has crippled HCI interface */
3028                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
3029                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3030         }
3031
3032         if (id->driver_info & BTUSB_INTEL_BOOT) {
3033                 /* A bug in the bootloader causes that interrupt interface is
3034                  * only enabled after receiving SetInterface(0, AltSetting=0).
3035                  */
3036                 err = usb_set_interface(data->udev, 0, 0);
3037                 if (err < 0) {
3038                         BT_ERR("failed to set interface 0, alt 0 %d", err);
3039                         hci_free_dev(hdev);
3040                         return err;
3041                 }
3042         }
3043
3044         if (data->isoc) {
3045                 err = usb_driver_claim_interface(&btusb_driver,
3046                                                  data->isoc, data);
3047                 if (err < 0) {
3048                         hci_free_dev(hdev);
3049                         return err;
3050                 }
3051         }
3052
3053 #ifdef CONFIG_BT_HCIBTUSB_BCM
3054         if (data->diag) {
3055                 if (!usb_driver_claim_interface(&btusb_driver,
3056                                                 data->diag, data))
3057                         __set_diag_interface(hdev);
3058                 else
3059                         data->diag = NULL;
3060         }
3061 #endif
3062
3063         err = hci_register_dev(hdev);
3064         if (err < 0) {
3065                 hci_free_dev(hdev);
3066                 return err;
3067         }
3068
3069         usb_set_intfdata(intf, data);
3070
3071         return 0;
3072 }
3073
3074 static void btusb_disconnect(struct usb_interface *intf)
3075 {
3076         struct btusb_data *data = usb_get_intfdata(intf);
3077         struct hci_dev *hdev;
3078
3079         BT_DBG("intf %p", intf);
3080
3081         if (!data)
3082                 return;
3083
3084         hdev = data->hdev;
3085         usb_set_intfdata(data->intf, NULL);
3086
3087         if (data->isoc)
3088                 usb_set_intfdata(data->isoc, NULL);
3089
3090         if (data->diag)
3091                 usb_set_intfdata(data->diag, NULL);
3092
3093         hci_unregister_dev(hdev);
3094
3095         if (intf == data->intf) {
3096                 if (data->isoc)
3097                         usb_driver_release_interface(&btusb_driver, data->isoc);
3098                 if (data->diag)
3099                         usb_driver_release_interface(&btusb_driver, data->diag);
3100         } else if (intf == data->isoc) {
3101                 if (data->diag)
3102                         usb_driver_release_interface(&btusb_driver, data->diag);
3103                 usb_driver_release_interface(&btusb_driver, data->intf);
3104         } else if (intf == data->diag) {
3105                 usb_driver_release_interface(&btusb_driver, data->intf);
3106                 if (data->isoc)
3107                         usb_driver_release_interface(&btusb_driver, data->isoc);
3108         }
3109
3110         hci_free_dev(hdev);
3111 }
3112
3113 #ifdef CONFIG_PM
3114 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
3115 {
3116         struct btusb_data *data = usb_get_intfdata(intf);
3117
3118         BT_DBG("intf %p", intf);
3119
3120         if (data->suspend_count++)
3121                 return 0;
3122
3123         spin_lock_irq(&data->txlock);
3124         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
3125                 set_bit(BTUSB_SUSPENDING, &data->flags);
3126                 spin_unlock_irq(&data->txlock);
3127         } else {
3128                 spin_unlock_irq(&data->txlock);
3129                 data->suspend_count--;
3130                 return -EBUSY;
3131         }
3132
3133         cancel_work_sync(&data->work);
3134
3135         btusb_stop_traffic(data);
3136         usb_kill_anchored_urbs(&data->tx_anchor);
3137
3138         /* Optionally request a device reset on resume, but only when
3139          * wakeups are disabled. If wakeups are enabled we assume the
3140          * device will stay powered up throughout suspend.
3141          */
3142         if (test_bit(BTUSB_RESET_RESUME, &data->flags) &&
3143             !device_may_wakeup(&data->udev->dev))
3144                 data->udev->reset_resume = 1;
3145
3146         return 0;
3147 }
3148
3149 static void play_deferred(struct btusb_data *data)
3150 {
3151         struct urb *urb;
3152         int err;
3153
3154         while ((urb = usb_get_from_anchor(&data->deferred))) {
3155                 err = usb_submit_urb(urb, GFP_ATOMIC);
3156                 if (err < 0)
3157                         break;
3158
3159                 data->tx_in_flight++;
3160         }
3161         usb_scuttle_anchored_urbs(&data->deferred);
3162 }
3163
3164 static int btusb_resume(struct usb_interface *intf)
3165 {
3166         struct btusb_data *data = usb_get_intfdata(intf);
3167         struct hci_dev *hdev = data->hdev;
3168         int err = 0;
3169
3170         BT_DBG("intf %p", intf);
3171
3172         if (--data->suspend_count)
3173                 return 0;
3174
3175         if (!test_bit(HCI_RUNNING, &hdev->flags))
3176                 goto done;
3177
3178         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
3179                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
3180                 if (err < 0) {
3181                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
3182                         goto failed;
3183                 }
3184         }
3185
3186         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
3187                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
3188                 if (err < 0) {
3189                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
3190                         goto failed;
3191                 }
3192
3193                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
3194         }
3195
3196         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
3197                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
3198                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
3199                 else
3200                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
3201         }
3202
3203         spin_lock_irq(&data->txlock);
3204         play_deferred(data);
3205         clear_bit(BTUSB_SUSPENDING, &data->flags);
3206         spin_unlock_irq(&data->txlock);
3207         schedule_work(&data->work);
3208
3209         return 0;
3210
3211 failed:
3212         usb_scuttle_anchored_urbs(&data->deferred);
3213 done:
3214         spin_lock_irq(&data->txlock);
3215         clear_bit(BTUSB_SUSPENDING, &data->flags);
3216         spin_unlock_irq(&data->txlock);
3217
3218         return err;
3219 }
3220 #endif
3221
3222 static struct usb_driver btusb_driver = {
3223         .name           = "btusb",
3224         .probe          = btusb_probe,
3225         .disconnect     = btusb_disconnect,
3226 #ifdef CONFIG_PM
3227         .suspend        = btusb_suspend,
3228         .resume         = btusb_resume,
3229 #endif
3230         .id_table       = btusb_table,
3231         .supports_autosuspend = 1,
3232         .disable_hub_initiated_lpm = 1,
3233 };
3234
3235 module_usb_driver(btusb_driver);
3236
3237 module_param(disable_scofix, bool, 0644);
3238 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
3239
3240 module_param(force_scofix, bool, 0644);
3241 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
3242
3243 module_param(reset, bool, 0644);
3244 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
3245
3246 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
3247 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
3248 MODULE_VERSION(VERSION);
3249 MODULE_LICENSE("GPL");