kernel/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(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 212         { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
 213         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 214         { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
 215         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 216         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 217         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 218         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 219         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 220         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
 221         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 222         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 223         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 224         { USB_DEVICE(0x0cf3, 0x817b), .driver_info = BTUSB_ATH3012 },
 225         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 226         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 227         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 228         { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 },
 229         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 230         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 231         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 232         { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 },
 233         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 234         { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
 235         { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
 236         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
 237         { USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 },
 238         { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
 239
 240         /* Atheros AR5BBU12 with sflash firmware */
 241         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 242
 243         /* Atheros AR5BBU12 with sflash firmware */
 244         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 245         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 246
 247         /* QCA ROME chipset */
 248         { USB_DEVICE(0x0cf3, 0xe007), .driver_info = BTUSB_QCA_ROME },
 249         { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME },
 250         { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME },
 251
 252         /* Broadcom BCM2035 */
 253         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 254         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 255         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 256
 257         /* Broadcom BCM2045 */
 258         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 259         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 260
 261         /* IBM/Lenovo ThinkPad with Broadcom chip */
 262         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 263         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 264
 265         /* HP laptop with Broadcom chip */
 266         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 267
 268         /* Dell laptop with Broadcom chip */
 269         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 270
 271         /* Dell Wireless 370 and 410 devices */
 272         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 273         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 274
 275         /* Belkin F8T012 and F8T013 devices */
 276         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 277         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 278
 279         /* Asus WL-BTD202 device */
 280         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 281
 282         /* Kensington Bluetooth USB adapter */
 283         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 284
 285         /* RTX Telecom based adapters with buggy SCO support */
 286         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 287         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 288
 289         /* CONWISE Technology based adapters with buggy SCO support */
 290         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 291
 292         /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
 293         { USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE },
 294
 295         /* Digianswer devices */
 296         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 297         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 298
 299         /* CSR BlueCore Bluetooth Sniffer */
 300         { USB_DEVICE(0x0a12, 0x0002),
 301           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 302
 303         /* Frontline ComProbe Bluetooth Sniffer */
 304         { USB_DEVICE(0x16d3, 0x0002),
 305           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 306
 307         /* Marvell Bluetooth devices */
 308         { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
 309         { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
 310
 311         /* Intel Bluetooth devices */
 312         { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR },
 313         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 314         { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
 315         { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_NEW },
 316
 317         /* Other Intel Bluetooth devices */
 318         { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01),
 319           .driver_info = BTUSB_IGNORE },
 320
 321         /* Realtek Bluetooth devices */
 322         { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01),
 323           .driver_info = BTUSB_REALTEK },
 324
 325         /* Additional Realtek 8723AE Bluetooth devices */
 326         { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK },
 327         { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK },
 328
 329         /* Additional Realtek 8723BE Bluetooth devices */
 330         { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK },
 331         { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK },
 332         { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
 333         { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
 334         { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },
 335
 336         /* Additional Realtek 8821AE Bluetooth devices */
 337         { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
 338         { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },
 339         { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK },
 340         { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK },
 341         { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK },
 342
 343         /* Silicon Wave based devices */
 344         { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE },
 345
 346         { }     /* Terminating entry */
 347 };
 348
 349 #define BTUSB_MAX_ISOC_FRAMES   10
 350
 351 #define BTUSB_INTR_RUNNING      0
 352 #define BTUSB_BULK_RUNNING      1
 353 #define BTUSB_ISOC_RUNNING      2
 354 #define BTUSB_SUSPENDING        3
 355 #define BTUSB_DID_ISO_RESUME    4
 356 #define BTUSB_BOOTLOADER        5
 357 #define BTUSB_DOWNLOADING       6
 358 #define BTUSB_FIRMWARE_LOADED   7
 359 #define BTUSB_FIRMWARE_FAILED   8
 360 #define BTUSB_BOOTING           9
 361 #define BTUSB_RESET_RESUME      10
 362 #define BTUSB_DIAG_RUNNING      11
 363
 364 struct btusb_data {
 365         struct hci_dev       *hdev;
 366         struct usb_device    *udev;
 367         struct usb_interface *intf;
 368         struct usb_interface *isoc;
 369         struct usb_interface *diag;
 370
 371         unsigned long flags;
 372
 373         struct work_struct work;
 374         struct work_struct waker;
 375
 376         struct usb_anchor deferred;
 377         struct usb_anchor tx_anchor;
 378         int tx_in_flight;
 379         spinlock_t txlock;
 380
 381         struct usb_anchor intr_anchor;
 382         struct usb_anchor bulk_anchor;
 383         struct usb_anchor isoc_anchor;
 384         struct usb_anchor diag_anchor;
 385         spinlock_t rxlock;
 386
 387         struct sk_buff *evt_skb;
 388         struct sk_buff *acl_skb;
 389         struct sk_buff *sco_skb;
 390
 391         struct usb_endpoint_descriptor *intr_ep;
 392         struct usb_endpoint_descriptor *bulk_tx_ep;
 393         struct usb_endpoint_descriptor *bulk_rx_ep;
 394         struct usb_endpoint_descriptor *isoc_tx_ep;
 395         struct usb_endpoint_descriptor *isoc_rx_ep;
 396         struct usb_endpoint_descriptor *diag_tx_ep;
 397         struct usb_endpoint_descriptor *diag_rx_ep;
 398
 399         __u8 cmdreq_type;
 400         __u8 cmdreq;
 401
 402         unsigned int sco_num;
 403         int isoc_altsetting;
 404         int suspend_count;
 405
 406         int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
 407         int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
 408
 409         int (*setup_on_usb)(struct hci_dev *hdev);
 410 };
 411
 412 static inline void btusb_free_frags(struct btusb_data *data)
 413 {
 414         unsigned long flags;
 415
 416         spin_lock_irqsave(&data->rxlock, flags);
 417
 418         kfree_skb(data->evt_skb);
 419         data->evt_skb = NULL;
 420
 421         kfree_skb(data->acl_skb);
 422         data->acl_skb = NULL;
 423
 424         kfree_skb(data->sco_skb);
 425         data->sco_skb = NULL;
 426
 427         spin_unlock_irqrestore(&data->rxlock, flags);
 428 }
 429
 430 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
 431 {
 432         struct sk_buff *skb;
 433         int err = 0;
 434
 435         spin_lock(&data->rxlock);
 436         skb = data->evt_skb;
 437
 438         while (count) {
 439                 int len;
 440
 441                 if (!skb) {
 442                         skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
 443                         if (!skb) {
 444                                 err = -ENOMEM;
 445                                 break;
 446                         }
 447
 448                         bt_cb(skb)->pkt_type = HCI_EVENT_PKT;
 449                         bt_cb(skb)->expect = HCI_EVENT_HDR_SIZE;
 450                 }
 451
 452                 len = min_t(uint, bt_cb(skb)->expect, count);
 453                 memcpy(skb_put(skb, len), buffer, len);
 454
 455                 count -= len;
 456                 buffer += len;
 457                 bt_cb(skb)->expect -= len;
 458
 459                 if (skb->len == HCI_EVENT_HDR_SIZE) {
 460                         /* Complete event header */
 461                         bt_cb(skb)->expect = hci_event_hdr(skb)->plen;
 462
 463                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 464                                 kfree_skb(skb);
 465                                 skb = NULL;
 466
 467                                 err = -EILSEQ;
 468                                 break;
 469                         }
 470                 }
 471
 472                 if (bt_cb(skb)->expect == 0) {
 473                         /* Complete frame */
 474                         data->recv_event(data->hdev, skb);
 475                         skb = NULL;
 476                 }
 477         }
 478
 479         data->evt_skb = skb;
 480         spin_unlock(&data->rxlock);
 481
 482         return err;
 483 }
 484
 485 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
 486 {
 487         struct sk_buff *skb;
 488         int err = 0;
 489
 490         spin_lock(&data->rxlock);
 491         skb = data->acl_skb;
 492
 493         while (count) {
 494                 int len;
 495
 496                 if (!skb) {
 497                         skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
 498                         if (!skb) {
 499                                 err = -ENOMEM;
 500                                 break;
 501                         }
 502
 503                         bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT;
 504                         bt_cb(skb)->expect = HCI_ACL_HDR_SIZE;
 505                 }
 506
 507                 len = min_t(uint, bt_cb(skb)->expect, count);
 508                 memcpy(skb_put(skb, len), buffer, len);
 509
 510                 count -= len;
 511                 buffer += len;
 512                 bt_cb(skb)->expect -= len;
 513
 514                 if (skb->len == HCI_ACL_HDR_SIZE) {
 515                         __le16 dlen = hci_acl_hdr(skb)->dlen;
 516
 517                         /* Complete ACL header */
 518                         bt_cb(skb)->expect = __le16_to_cpu(dlen);
 519
 520                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 521                                 kfree_skb(skb);
 522                                 skb = NULL;
 523
 524                                 err = -EILSEQ;
 525                                 break;
 526                         }
 527                 }
 528
 529                 if (bt_cb(skb)->expect == 0) {
 530                         /* Complete frame */
 531                         hci_recv_frame(data->hdev, skb);
 532                         skb = NULL;
 533                 }
 534         }
 535
 536         data->acl_skb = skb;
 537         spin_unlock(&data->rxlock);
 538
 539         return err;
 540 }
 541
 542 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
 543 {
 544         struct sk_buff *skb;
 545         int err = 0;
 546
 547         spin_lock(&data->rxlock);
 548         skb = data->sco_skb;
 549
 550         while (count) {
 551                 int len;
 552
 553                 if (!skb) {
 554                         skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
 555                         if (!skb) {
 556                                 err = -ENOMEM;
 557                                 break;
 558                         }
 559
 560                         bt_cb(skb)->pkt_type = HCI_SCODATA_PKT;
 561                         bt_cb(skb)->expect = HCI_SCO_HDR_SIZE;
 562                 }
 563
 564                 len = min_t(uint, bt_cb(skb)->expect, count);
 565                 memcpy(skb_put(skb, len), buffer, len);
 566
 567                 count -= len;
 568                 buffer += len;
 569                 bt_cb(skb)->expect -= len;
 570
 571                 if (skb->len == HCI_SCO_HDR_SIZE) {
 572                         /* Complete SCO header */
 573                         bt_cb(skb)->expect = hci_sco_hdr(skb)->dlen;
 574
 575                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 576                                 kfree_skb(skb);
 577                                 skb = NULL;
 578
 579                                 err = -EILSEQ;
 580                                 break;
 581                         }
 582                 }
 583
 584                 if (bt_cb(skb)->expect == 0) {
 585                         /* Complete frame */
 586                         hci_recv_frame(data->hdev, skb);
 587                         skb = NULL;
 588                 }
 589         }
 590
 591         data->sco_skb = skb;
 592         spin_unlock(&data->rxlock);
 593
 594         return err;
 595 }
 596
 597 static void btusb_intr_complete(struct urb *urb)
 598 {
 599         struct hci_dev *hdev = urb->context;
 600         struct btusb_data *data = hci_get_drvdata(hdev);
 601         int err;
 602
 603         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 604                urb->actual_length);
 605
 606         if (!test_bit(HCI_RUNNING, &hdev->flags))
 607                 return;
 608
 609         if (urb->status == 0) {
 610                 hdev->stat.byte_rx += urb->actual_length;
 611
 612                 if (btusb_recv_intr(data, urb->transfer_buffer,
 613                                     urb->actual_length) < 0) {
 614                         BT_ERR("%s corrupted event packet", hdev->name);
 615                         hdev->stat.err_rx++;
 616                 }
 617         } else if (urb->status == -ENOENT) {
 618                 /* Avoid suspend failed when usb_kill_urb */
 619                 return;
 620         }
 621
 622         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 623                 return;
 624
 625         usb_mark_last_busy(data->udev);
 626         usb_anchor_urb(urb, &data->intr_anchor);
 627
 628         err = usb_submit_urb(urb, GFP_ATOMIC);
 629         if (err < 0) {
 630                 /* -EPERM: urb is being killed;
 631                  * -ENODEV: device got disconnected */
 632                 if (err != -EPERM && err != -ENODEV)
 633                         BT_ERR("%s urb %p failed to resubmit (%d)",
 634                                hdev->name, urb, -err);
 635                 usb_unanchor_urb(urb);
 636         }
 637 }
 638
 639 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 640 {
 641         struct btusb_data *data = hci_get_drvdata(hdev);
 642         struct urb *urb;
 643         unsigned char *buf;
 644         unsigned int pipe;
 645         int err, size;
 646
 647         BT_DBG("%s", hdev->name);
 648
 649         if (!data->intr_ep)
 650                 return -ENODEV;
 651
 652         urb = usb_alloc_urb(0, mem_flags);
 653         if (!urb)
 654                 return -ENOMEM;
 655
 656         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 657
 658         buf = kmalloc(size, mem_flags);
 659         if (!buf) {
 660                 usb_free_urb(urb);
 661                 return -ENOMEM;
 662         }
 663
 664         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 665
 666         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 667                          btusb_intr_complete, hdev, data->intr_ep->bInterval);
 668
 669         urb->transfer_flags |= URB_FREE_BUFFER;
 670
 671         usb_anchor_urb(urb, &data->intr_anchor);
 672
 673         err = usb_submit_urb(urb, mem_flags);
 674         if (err < 0) {
 675                 if (err != -EPERM && err != -ENODEV)
 676                         BT_ERR("%s urb %p submission failed (%d)",
 677                                hdev->name, urb, -err);
 678                 usb_unanchor_urb(urb);
 679         }
 680
 681         usb_free_urb(urb);
 682
 683         return err;
 684 }
 685
 686 static void btusb_bulk_complete(struct urb *urb)
 687 {
 688         struct hci_dev *hdev = urb->context;
 689         struct btusb_data *data = hci_get_drvdata(hdev);
 690         int err;
 691
 692         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 693                urb->actual_length);
 694
 695         if (!test_bit(HCI_RUNNING, &hdev->flags))
 696                 return;
 697
 698         if (urb->status == 0) {
 699                 hdev->stat.byte_rx += urb->actual_length;
 700
 701                 if (data->recv_bulk(data, urb->transfer_buffer,
 702                                     urb->actual_length) < 0) {
 703                         BT_ERR("%s corrupted ACL packet", hdev->name);
 704                         hdev->stat.err_rx++;
 705                 }
 706         } else if (urb->status == -ENOENT) {
 707                 /* Avoid suspend failed when usb_kill_urb */
 708                 return;
 709         }
 710
 711         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 712                 return;
 713
 714         usb_anchor_urb(urb, &data->bulk_anchor);
 715         usb_mark_last_busy(data->udev);
 716
 717         err = usb_submit_urb(urb, GFP_ATOMIC);
 718         if (err < 0) {
 719                 /* -EPERM: urb is being killed;
 720                  * -ENODEV: device got disconnected */
 721                 if (err != -EPERM && err != -ENODEV)
 722                         BT_ERR("%s urb %p failed to resubmit (%d)",
 723                                hdev->name, urb, -err);
 724                 usb_unanchor_urb(urb);
 725         }
 726 }
 727
 728 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 729 {
 730         struct btusb_data *data = hci_get_drvdata(hdev);
 731         struct urb *urb;
 732         unsigned char *buf;
 733         unsigned int pipe;
 734         int err, size = HCI_MAX_FRAME_SIZE;
 735
 736         BT_DBG("%s", hdev->name);
 737
 738         if (!data->bulk_rx_ep)
 739                 return -ENODEV;
 740
 741         urb = usb_alloc_urb(0, mem_flags);
 742         if (!urb)
 743                 return -ENOMEM;
 744
 745         buf = kmalloc(size, mem_flags);
 746         if (!buf) {
 747                 usb_free_urb(urb);
 748                 return -ENOMEM;
 749         }
 750
 751         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 752
 753         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
 754                           btusb_bulk_complete, hdev);
 755
 756         urb->transfer_flags |= URB_FREE_BUFFER;
 757
 758         usb_mark_last_busy(data->udev);
 759         usb_anchor_urb(urb, &data->bulk_anchor);
 760
 761         err = usb_submit_urb(urb, mem_flags);
 762         if (err < 0) {
 763                 if (err != -EPERM && err != -ENODEV)
 764                         BT_ERR("%s urb %p submission failed (%d)",
 765                                hdev->name, urb, -err);
 766                 usb_unanchor_urb(urb);
 767         }
 768
 769         usb_free_urb(urb);
 770
 771         return err;
 772 }
 773
 774 static void btusb_isoc_complete(struct urb *urb)
 775 {
 776         struct hci_dev *hdev = urb->context;
 777         struct btusb_data *data = hci_get_drvdata(hdev);
 778         int i, err;
 779
 780         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 781                urb->actual_length);
 782
 783         if (!test_bit(HCI_RUNNING, &hdev->flags))
 784                 return;
 785
 786         if (urb->status == 0) {
 787                 for (i = 0; i < urb->number_of_packets; i++) {
 788                         unsigned int offset = urb->iso_frame_desc[i].offset;
 789                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 790
 791                         if (urb->iso_frame_desc[i].status)
 792                                 continue;
 793
 794                         hdev->stat.byte_rx += length;
 795
 796                         if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
 797                                             length) < 0) {
 798                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 799                                 hdev->stat.err_rx++;
 800                         }
 801                 }
 802         } else if (urb->status == -ENOENT) {
 803                 /* Avoid suspend failed when usb_kill_urb */
 804                 return;
 805         }
 806
 807         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 808                 return;
 809
 810         usb_anchor_urb(urb, &data->isoc_anchor);
 811
 812         err = usb_submit_urb(urb, GFP_ATOMIC);
 813         if (err < 0) {
 814                 /* -EPERM: urb is being killed;
 815                  * -ENODEV: device got disconnected */
 816                 if (err != -EPERM && err != -ENODEV)
 817                         BT_ERR("%s urb %p failed to resubmit (%d)",
 818                                hdev->name, urb, -err);
 819                 usb_unanchor_urb(urb);
 820         }
 821 }
 822
 823 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 824 {
 825         int i, offset = 0;
 826
 827         BT_DBG("len %d mtu %d", len, mtu);
 828
 829         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 830                                         i++, offset += mtu, len -= mtu) {
 831                 urb->iso_frame_desc[i].offset = offset;
 832                 urb->iso_frame_desc[i].length = mtu;
 833         }
 834
 835         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 836                 urb->iso_frame_desc[i].offset = offset;
 837                 urb->iso_frame_desc[i].length = len;
 838                 i++;
 839         }
 840
 841         urb->number_of_packets = i;
 842 }
 843
 844 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 845 {
 846         struct btusb_data *data = hci_get_drvdata(hdev);
 847         struct urb *urb;
 848         unsigned char *buf;
 849         unsigned int pipe;
 850         int err, size;
 851
 852         BT_DBG("%s", hdev->name);
 853
 854         if (!data->isoc_rx_ep)
 855                 return -ENODEV;
 856
 857         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 858         if (!urb)
 859                 return -ENOMEM;
 860
 861         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 862                                                 BTUSB_MAX_ISOC_FRAMES;
 863
 864         buf = kmalloc(size, mem_flags);
 865         if (!buf) {
 866                 usb_free_urb(urb);
 867                 return -ENOMEM;
 868         }
 869
 870         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 871
 872         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 873                          hdev, data->isoc_rx_ep->bInterval);
 874
 875         urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
 876
 877         __fill_isoc_descriptor(urb, size,
 878                                le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 879
 880         usb_anchor_urb(urb, &data->isoc_anchor);
 881
 882         err = usb_submit_urb(urb, mem_flags);
 883         if (err < 0) {
 884                 if (err != -EPERM && err != -ENODEV)
 885                         BT_ERR("%s urb %p submission failed (%d)",
 886                                hdev->name, urb, -err);
 887                 usb_unanchor_urb(urb);
 888         }
 889
 890         usb_free_urb(urb);
 891
 892         return err;
 893 }
 894
 895 static void btusb_diag_complete(struct urb *urb)
 896 {
 897         struct hci_dev *hdev = urb->context;
 898         struct btusb_data *data = hci_get_drvdata(hdev);
 899         int err;
 900
 901         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 902                urb->actual_length);
 903
 904         if (urb->status == 0) {
 905                 struct sk_buff *skb;
 906
 907                 skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC);
 908                 if (skb) {
 909                         memcpy(skb_put(skb, urb->actual_length),
 910                                urb->transfer_buffer, urb->actual_length);
 911                         hci_recv_diag(hdev, skb);
 912                 }
 913         } else if (urb->status == -ENOENT) {
 914                 /* Avoid suspend failed when usb_kill_urb */
 915                 return;
 916         }
 917
 918         if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags))
 919                 return;
 920
 921         usb_anchor_urb(urb, &data->diag_anchor);
 922         usb_mark_last_busy(data->udev);
 923
 924         err = usb_submit_urb(urb, GFP_ATOMIC);
 925         if (err < 0) {
 926                 /* -EPERM: urb is being killed;
 927                  * -ENODEV: device got disconnected */
 928                 if (err != -EPERM && err != -ENODEV)
 929                         BT_ERR("%s urb %p failed to resubmit (%d)",
 930                                hdev->name, urb, -err);
 931                 usb_unanchor_urb(urb);
 932         }
 933 }
 934
 935 static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags)
 936 {
 937         struct btusb_data *data = hci_get_drvdata(hdev);
 938         struct urb *urb;
 939         unsigned char *buf;
 940         unsigned int pipe;
 941         int err, size = HCI_MAX_FRAME_SIZE;
 942
 943         BT_DBG("%s", hdev->name);
 944
 945         if (!data->diag_rx_ep)
 946                 return -ENODEV;
 947
 948         urb = usb_alloc_urb(0, mem_flags);
 949         if (!urb)
 950                 return -ENOMEM;
 951
 952         buf = kmalloc(size, mem_flags);
 953         if (!buf) {
 954                 usb_free_urb(urb);
 955                 return -ENOMEM;
 956         }
 957
 958         pipe = usb_rcvbulkpipe(data->udev, data->diag_rx_ep->bEndpointAddress);
 959
 960         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
 961                           btusb_diag_complete, hdev);
 962
 963         urb->transfer_flags |= URB_FREE_BUFFER;
 964
 965         usb_mark_last_busy(data->udev);
 966         usb_anchor_urb(urb, &data->diag_anchor);
 967
 968         err = usb_submit_urb(urb, mem_flags);
 969         if (err < 0) {
 970                 if (err != -EPERM && err != -ENODEV)
 971                         BT_ERR("%s urb %p submission failed (%d)",
 972                                hdev->name, urb, -err);
 973                 usb_unanchor_urb(urb);
 974         }
 975
 976         usb_free_urb(urb);
 977
 978         return err;
 979 }
 980
 981 static void btusb_tx_complete(struct urb *urb)
 982 {
 983         struct sk_buff *skb = urb->context;
 984         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
 985         struct btusb_data *data = hci_get_drvdata(hdev);
 986
 987         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 988                urb->actual_length);
 989
 990         if (!test_bit(HCI_RUNNING, &hdev->flags))
 991                 goto done;
 992
 993         if (!urb->status)
 994                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 995         else
 996                 hdev->stat.err_tx++;
 997
 998 done:
 999         spin_lock(&data->txlock);
1000         data->tx_in_flight--;
1001         spin_unlock(&data->txlock);
1002
1003         kfree(urb->setup_packet);
1004
1005         kfree_skb(skb);
1006 }
1007
1008 static void btusb_isoc_tx_complete(struct urb *urb)
1009 {
1010         struct sk_buff *skb = urb->context;
1011         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1012
1013         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1014                urb->actual_length);
1015
1016         if (!test_bit(HCI_RUNNING, &hdev->flags))
1017                 goto done;
1018
1019         if (!urb->status)
1020                 hdev->stat.byte_tx += urb->transfer_buffer_length;
1021         else
1022                 hdev->stat.err_tx++;
1023
1024 done:
1025         kfree(urb->setup_packet);
1026
1027         kfree_skb(skb);
1028 }
1029
1030 static int btusb_open(struct hci_dev *hdev)
1031 {
1032         struct btusb_data *data = hci_get_drvdata(hdev);
1033         int err;
1034
1035         BT_DBG("%s", hdev->name);
1036
1037         /* Patching USB firmware files prior to starting any URBs of HCI path
1038          * It is more safe to use USB bulk channel for downloading USB patch
1039          */
1040         if (data->setup_on_usb) {
1041                 err = data->setup_on_usb(hdev);
1042                 if (err < 0)
1043                         return err;
1044         }
1045
1046         err = usb_autopm_get_interface(data->intf);
1047         if (err < 0)
1048                 return err;
1049
1050         data->intf->needs_remote_wakeup = 1;
1051
1052         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
1053                 goto done;
1054
1055         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
1056         if (err < 0)
1057                 goto failed;
1058
1059         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1060         if (err < 0) {
1061                 usb_kill_anchored_urbs(&data->intr_anchor);
1062                 goto failed;
1063         }
1064
1065         set_bit(BTUSB_BULK_RUNNING, &data->flags);
1066         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1067
1068         if (data->diag) {
1069                 if (!btusb_submit_diag_urb(hdev, GFP_KERNEL))
1070                         set_bit(BTUSB_DIAG_RUNNING, &data->flags);
1071         }
1072
1073 done:
1074         usb_autopm_put_interface(data->intf);
1075         return 0;
1076
1077 failed:
1078         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1079         usb_autopm_put_interface(data->intf);
1080         return err;
1081 }
1082
1083 static void btusb_stop_traffic(struct btusb_data *data)
1084 {
1085         usb_kill_anchored_urbs(&data->intr_anchor);
1086         usb_kill_anchored_urbs(&data->bulk_anchor);
1087         usb_kill_anchored_urbs(&data->isoc_anchor);
1088         usb_kill_anchored_urbs(&data->diag_anchor);
1089 }
1090
1091 static int btusb_close(struct hci_dev *hdev)
1092 {
1093         struct btusb_data *data = hci_get_drvdata(hdev);
1094         int err;
1095
1096         BT_DBG("%s", hdev->name);
1097
1098         cancel_work_sync(&data->work);
1099         cancel_work_sync(&data->waker);
1100
1101         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1102         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1103         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1104         clear_bit(BTUSB_DIAG_RUNNING, &data->flags);
1105
1106         btusb_stop_traffic(data);
1107         btusb_free_frags(data);
1108
1109         err = usb_autopm_get_interface(data->intf);
1110         if (err < 0)
1111                 goto failed;
1112
1113         data->intf->needs_remote_wakeup = 0;
1114         usb_autopm_put_interface(data->intf);
1115
1116 failed:
1117         usb_scuttle_anchored_urbs(&data->deferred);
1118         return 0;
1119 }
1120
1121 static int btusb_flush(struct hci_dev *hdev)
1122 {
1123         struct btusb_data *data = hci_get_drvdata(hdev);
1124
1125         BT_DBG("%s", hdev->name);
1126
1127         usb_kill_anchored_urbs(&data->tx_anchor);
1128         btusb_free_frags(data);
1129
1130         return 0;
1131 }
1132
1133 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
1134 {
1135         struct btusb_data *data = hci_get_drvdata(hdev);
1136         struct usb_ctrlrequest *dr;
1137         struct urb *urb;
1138         unsigned int pipe;
1139
1140         urb = usb_alloc_urb(0, GFP_KERNEL);
1141         if (!urb)
1142                 return ERR_PTR(-ENOMEM);
1143
1144         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
1145         if (!dr) {
1146                 usb_free_urb(urb);
1147                 return ERR_PTR(-ENOMEM);
1148         }
1149
1150         dr->bRequestType = data->cmdreq_type;
1151         dr->bRequest     = data->cmdreq;
1152         dr->wIndex       = 0;
1153         dr->wValue       = 0;
1154         dr->wLength      = __cpu_to_le16(skb->len);
1155
1156         pipe = usb_sndctrlpipe(data->udev, 0x00);
1157
1158         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
1159                              skb->data, skb->len, btusb_tx_complete, skb);
1160
1161         skb->dev = (void *)hdev;
1162
1163         return urb;
1164 }
1165
1166 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
1167 {
1168         struct btusb_data *data = hci_get_drvdata(hdev);
1169         struct urb *urb;
1170         unsigned int pipe;
1171
1172         if (!data->bulk_tx_ep)
1173                 return ERR_PTR(-ENODEV);
1174
1175         urb = usb_alloc_urb(0, GFP_KERNEL);
1176         if (!urb)
1177                 return ERR_PTR(-ENOMEM);
1178
1179         pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1180
1181         usb_fill_bulk_urb(urb, data->udev, pipe,
1182                           skb->data, skb->len, btusb_tx_complete, skb);
1183
1184         skb->dev = (void *)hdev;
1185
1186         return urb;
1187 }
1188
1189 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1190 {
1191         struct btusb_data *data = hci_get_drvdata(hdev);
1192         struct urb *urb;
1193         unsigned int pipe;
1194
1195         if (!data->isoc_tx_ep)
1196                 return ERR_PTR(-ENODEV);
1197
1198         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1199         if (!urb)
1200                 return ERR_PTR(-ENOMEM);
1201
1202         pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1203
1204         usb_fill_int_urb(urb, data->udev, pipe,
1205                          skb->data, skb->len, btusb_isoc_tx_complete,
1206                          skb, data->isoc_tx_ep->bInterval);
1207
1208         urb->transfer_flags  = URB_ISO_ASAP;
1209
1210         __fill_isoc_descriptor(urb, skb->len,
1211                                le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1212
1213         skb->dev = (void *)hdev;
1214
1215         return urb;
1216 }
1217
1218 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1219 {
1220         struct btusb_data *data = hci_get_drvdata(hdev);
1221         int err;
1222
1223         usb_anchor_urb(urb, &data->tx_anchor);
1224
1225         err = usb_submit_urb(urb, GFP_KERNEL);
1226         if (err < 0) {
1227                 if (err != -EPERM && err != -ENODEV)
1228                         BT_ERR("%s urb %p submission failed (%d)",
1229                                hdev->name, urb, -err);
1230                 kfree(urb->setup_packet);
1231                 usb_unanchor_urb(urb);
1232         } else {
1233                 usb_mark_last_busy(data->udev);
1234         }
1235
1236         usb_free_urb(urb);
1237         return err;
1238 }
1239
1240 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1241 {
1242         struct btusb_data *data = hci_get_drvdata(hdev);
1243         unsigned long flags;
1244         bool suspending;
1245
1246         spin_lock_irqsave(&data->txlock, flags);
1247         suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1248         if (!suspending)
1249                 data->tx_in_flight++;
1250         spin_unlock_irqrestore(&data->txlock, flags);
1251
1252         if (!suspending)
1253                 return submit_tx_urb(hdev, urb);
1254
1255         usb_anchor_urb(urb, &data->deferred);
1256         schedule_work(&data->waker);
1257
1258         usb_free_urb(urb);
1259         return 0;
1260 }
1261
1262 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1263 {
1264         struct urb *urb;
1265
1266         BT_DBG("%s", hdev->name);
1267
1268         switch (bt_cb(skb)->pkt_type) {
1269         case HCI_COMMAND_PKT:
1270                 urb = alloc_ctrl_urb(hdev, skb);
1271                 if (IS_ERR(urb))
1272                         return PTR_ERR(urb);
1273
1274                 hdev->stat.cmd_tx++;
1275                 return submit_or_queue_tx_urb(hdev, urb);
1276
1277         case HCI_ACLDATA_PKT:
1278                 urb = alloc_bulk_urb(hdev, skb);
1279                 if (IS_ERR(urb))
1280                         return PTR_ERR(urb);
1281
1282                 hdev->stat.acl_tx++;
1283                 return submit_or_queue_tx_urb(hdev, urb);
1284
1285         case HCI_SCODATA_PKT:
1286                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1287                         return -ENODEV;
1288
1289                 urb = alloc_isoc_urb(hdev, skb);
1290                 if (IS_ERR(urb))
1291                         return PTR_ERR(urb);
1292
1293                 hdev->stat.sco_tx++;
1294                 return submit_tx_urb(hdev, urb);
1295         }
1296
1297         return -EILSEQ;
1298 }
1299
1300 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1301 {
1302         struct btusb_data *data = hci_get_drvdata(hdev);
1303
1304         BT_DBG("%s evt %d", hdev->name, evt);
1305
1306         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1307                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1308                 schedule_work(&data->work);
1309         }
1310 }
1311
1312 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1313 {
1314         struct btusb_data *data = hci_get_drvdata(hdev);
1315         struct usb_interface *intf = data->isoc;
1316         struct usb_endpoint_descriptor *ep_desc;
1317         int i, err;
1318
1319         if (!data->isoc)
1320                 return -ENODEV;
1321
1322         err = usb_set_interface(data->udev, 1, altsetting);
1323         if (err < 0) {
1324                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
1325                 return err;
1326         }
1327
1328         data->isoc_altsetting = altsetting;
1329
1330         data->isoc_tx_ep = NULL;
1331         data->isoc_rx_ep = NULL;
1332
1333         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1334                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1335
1336                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1337                         data->isoc_tx_ep = ep_desc;
1338                         continue;
1339                 }
1340
1341                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1342                         data->isoc_rx_ep = ep_desc;
1343                         continue;
1344                 }
1345         }
1346
1347         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1348                 BT_ERR("%s invalid SCO descriptors", hdev->name);
1349                 return -ENODEV;
1350         }
1351
1352         return 0;
1353 }
1354
1355 static void btusb_work(struct work_struct *work)
1356 {
1357         struct btusb_data *data = container_of(work, struct btusb_data, work);
1358         struct hci_dev *hdev = data->hdev;
1359         int new_alts;
1360         int err;
1361
1362         if (data->sco_num > 0) {
1363                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1364                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1365                         if (err < 0) {
1366                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1367                                 usb_kill_anchored_urbs(&data->isoc_anchor);
1368                                 return;
1369                         }
1370
1371                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1372                 }
1373
1374                 if (hdev->voice_setting & 0x0020) {
1375                         static const int alts[3] = { 2, 4, 5 };
1376
1377                         new_alts = alts[data->sco_num - 1];
1378                 } else {
1379                         new_alts = data->sco_num;
1380                 }
1381
1382                 if (data->isoc_altsetting != new_alts) {
1383                         unsigned long flags;
1384
1385                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1386                         usb_kill_anchored_urbs(&data->isoc_anchor);
1387
1388                         /* When isochronous alternate setting needs to be
1389                          * changed, because SCO connection has been added
1390                          * or removed, a packet fragment may be left in the
1391                          * reassembling state. This could lead to wrongly
1392                          * assembled fragments.
1393                          *
1394                          * Clear outstanding fragment when selecting a new
1395                          * alternate setting.
1396                          */
1397                         spin_lock_irqsave(&data->rxlock, flags);
1398                         kfree_skb(data->sco_skb);
1399                         data->sco_skb = NULL;
1400                         spin_unlock_irqrestore(&data->rxlock, flags);
1401
1402                         if (__set_isoc_interface(hdev, new_alts) < 0)
1403                                 return;
1404                 }
1405
1406                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1407                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1408                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1409                         else
1410                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1411                 }
1412         } else {
1413                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1414                 usb_kill_anchored_urbs(&data->isoc_anchor);
1415
1416                 __set_isoc_interface(hdev, 0);
1417                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1418                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1419         }
1420 }
1421
1422 static void btusb_waker(struct work_struct *work)
1423 {
1424         struct btusb_data *data = container_of(work, struct btusb_data, waker);
1425         int err;
1426
1427         err = usb_autopm_get_interface(data->intf);
1428         if (err < 0)
1429                 return;
1430
1431         usb_autopm_put_interface(data->intf);
1432 }
1433
1434 static int btusb_setup_bcm92035(struct hci_dev *hdev)
1435 {
1436         struct sk_buff *skb;
1437         u8 val = 0x00;
1438
1439         BT_DBG("%s", hdev->name);
1440
1441         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1442         if (IS_ERR(skb))
1443                 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
1444         else
1445                 kfree_skb(skb);
1446
1447         return 0;
1448 }
1449
1450 static int btusb_setup_csr(struct hci_dev *hdev)
1451 {
1452         struct hci_rp_read_local_version *rp;
1453         struct sk_buff *skb;
1454
1455         BT_DBG("%s", hdev->name);
1456
1457         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1458                              HCI_INIT_TIMEOUT);
1459         if (IS_ERR(skb)) {
1460                 int err = PTR_ERR(skb);
1461                 BT_ERR("%s: CSR: Local version failed (%d)", hdev->name, err);
1462                 return err;
1463         }
1464
1465         if (skb->len != sizeof(struct hci_rp_read_local_version)) {
1466                 BT_ERR("%s: CSR: Local version length mismatch", hdev->name);
1467                 kfree_skb(skb);
1468                 return -EIO;
1469         }
1470
1471         rp = (struct hci_rp_read_local_version *)skb->data;
1472
1473         /* Detect controllers which aren't real CSR ones. */
1474         if (le16_to_cpu(rp->manufacturer) != 10 ||
1475             le16_to_cpu(rp->lmp_subver) == 0x0c5c) {
1476                 /* Clear the reset quirk since this is not an actual
1477                  * early Bluetooth 1.1 device from CSR.
1478                  */
1479                 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1480
1481                 /* These fake CSR controllers have all a broken
1482                  * stored link key handling and so just disable it.
1483                  */
1484                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
1485         }
1486
1487         kfree_skb(skb);
1488
1489         return 0;
1490 }
1491
1492 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1493                                                        struct intel_version *ver)
1494 {
1495         const struct firmware *fw;
1496         char fwname[64];
1497         int ret;
1498
1499         snprintf(fwname, sizeof(fwname),
1500                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1501                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
1502                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1503                  ver->fw_build_ww, ver->fw_build_yy);
1504
1505         ret = request_firmware(&fw, fwname, &hdev->dev);
1506         if (ret < 0) {
1507                 if (ret == -EINVAL) {
1508                         BT_ERR("%s Intel firmware file request failed (%d)",
1509                                hdev->name, ret);
1510                         return NULL;
1511                 }
1512
1513                 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1514                        hdev->name, fwname, ret);
1515
1516                 /* If the correct firmware patch file is not found, use the
1517                  * default firmware patch file instead
1518                  */
1519                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1520                          ver->hw_platform, ver->hw_variant);
1521                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1522                         BT_ERR("%s failed to open default Intel fw file: %s",
1523                                hdev->name, fwname);
1524                         return NULL;
1525                 }
1526         }
1527
1528         BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1529
1530         return fw;
1531 }
1532
1533 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1534                                       const struct firmware *fw,
1535                                       const u8 **fw_ptr, int *disable_patch)
1536 {
1537         struct sk_buff *skb;
1538         struct hci_command_hdr *cmd;
1539         const u8 *cmd_param;
1540         struct hci_event_hdr *evt = NULL;
1541         const u8 *evt_param = NULL;
1542         int remain = fw->size - (*fw_ptr - fw->data);
1543
1544         /* The first byte indicates the types of the patch command or event.
1545          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1546          * in the current firmware buffer doesn't start with 0x01 or
1547          * the size of remain buffer is smaller than HCI command header,
1548          * the firmware file is corrupted and it should stop the patching
1549          * process.
1550          */
1551         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1552                 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1553                 return -EINVAL;
1554         }
1555         (*fw_ptr)++;
1556         remain--;
1557
1558         cmd = (struct hci_command_hdr *)(*fw_ptr);
1559         *fw_ptr += sizeof(*cmd);
1560         remain -= sizeof(*cmd);
1561
1562         /* Ensure that the remain firmware data is long enough than the length
1563          * of command parameter. If not, the firmware file is corrupted.
1564          */
1565         if (remain < cmd->plen) {
1566                 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1567                 return -EFAULT;
1568         }
1569
1570         /* If there is a command that loads a patch in the firmware
1571          * file, then enable the patch upon success, otherwise just
1572          * disable the manufacturer mode, for example patch activation
1573          * is not required when the default firmware patch file is used
1574          * because there are no patch data to load.
1575          */
1576         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1577                 *disable_patch = 0;
1578
1579         cmd_param = *fw_ptr;
1580         *fw_ptr += cmd->plen;
1581         remain -= cmd->plen;
1582
1583         /* This reads the expected events when the above command is sent to the
1584          * device. Some vendor commands expects more than one events, for
1585          * example command status event followed by vendor specific event.
1586          * For this case, it only keeps the last expected event. so the command
1587          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1588          * last expected event.
1589          */
1590         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1591                 (*fw_ptr)++;
1592                 remain--;
1593
1594                 evt = (struct hci_event_hdr *)(*fw_ptr);
1595                 *fw_ptr += sizeof(*evt);
1596                 remain -= sizeof(*evt);
1597
1598                 if (remain < evt->plen) {
1599                         BT_ERR("%s Intel fw corrupted: invalid evt len",
1600                                hdev->name);
1601                         return -EFAULT;
1602                 }
1603
1604                 evt_param = *fw_ptr;
1605                 *fw_ptr += evt->plen;
1606                 remain -= evt->plen;
1607         }
1608
1609         /* Every HCI commands in the firmware file has its correspond event.
1610          * If event is not found or remain is smaller than zero, the firmware
1611          * file is corrupted.
1612          */
1613         if (!evt || !evt_param || remain < 0) {
1614                 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1615                 return -EFAULT;
1616         }
1617
1618         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1619                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1620         if (IS_ERR(skb)) {
1621                 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1622                        hdev->name, cmd->opcode, PTR_ERR(skb));
1623                 return PTR_ERR(skb);
1624         }
1625
1626         /* It ensures that the returned event matches the event data read from
1627          * the firmware file. At fist, it checks the length and then
1628          * the contents of the event.
1629          */
1630         if (skb->len != evt->plen) {
1631                 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1632                        le16_to_cpu(cmd->opcode));
1633                 kfree_skb(skb);
1634                 return -EFAULT;
1635         }
1636
1637         if (memcmp(skb->data, evt_param, evt->plen)) {
1638                 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1639                        hdev->name, le16_to_cpu(cmd->opcode));
1640                 kfree_skb(skb);
1641                 return -EFAULT;
1642         }
1643         kfree_skb(skb);
1644
1645         return 0;
1646 }
1647
1648 static int btusb_setup_intel(struct hci_dev *hdev)
1649 {
1650         struct sk_buff *skb;
1651         const struct firmware *fw;
1652         const u8 *fw_ptr;
1653         int disable_patch;
1654         struct intel_version *ver;
1655
1656         const u8 mfg_enable[] = { 0x01, 0x00 };
1657         const u8 mfg_disable[] = { 0x00, 0x00 };
1658         const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
1659         const u8 mfg_reset_activate[] = { 0x00, 0x02 };
1660
1661         BT_DBG("%s", hdev->name);
1662
1663         /* The controller has a bug with the first HCI command sent to it
1664          * returning number of completed commands as zero. This would stall the
1665          * command processing in the Bluetooth core.
1666          *
1667          * As a workaround, send HCI Reset command first which will reset the
1668          * number of completed commands and allow normal command processing
1669          * from now on.
1670          */
1671         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1672         if (IS_ERR(skb)) {
1673                 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1674                        hdev->name, PTR_ERR(skb));
1675                 return PTR_ERR(skb);
1676         }
1677         kfree_skb(skb);
1678
1679         /* Read Intel specific controller version first to allow selection of
1680          * which firmware file to load.
1681          *
1682          * The returned information are hardware variant and revision plus
1683          * firmware variant, revision and build number.
1684          */
1685         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1686         if (IS_ERR(skb)) {
1687                 BT_ERR("%s reading Intel fw version command failed (%ld)",
1688                        hdev->name, PTR_ERR(skb));
1689                 return PTR_ERR(skb);
1690         }
1691
1692         if (skb->len != sizeof(*ver)) {
1693                 BT_ERR("%s Intel version event length mismatch", hdev->name);
1694                 kfree_skb(skb);
1695                 return -EIO;
1696         }
1697
1698         ver = (struct intel_version *)skb->data;
1699
1700         BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1701                 hdev->name, ver->hw_platform, ver->hw_variant,
1702                 ver->hw_revision, ver->fw_variant,  ver->fw_revision,
1703                 ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
1704                 ver->fw_patch_num);
1705
1706         /* fw_patch_num indicates the version of patch the device currently
1707          * have. If there is no patch data in the device, it is always 0x00.
1708          * So, if it is other than 0x00, no need to patch the device again.
1709          */
1710         if (ver->fw_patch_num) {
1711                 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1712                         hdev->name, ver->fw_patch_num);
1713                 kfree_skb(skb);
1714                 goto complete;
1715         }
1716
1717         /* Opens the firmware patch file based on the firmware version read
1718          * from the controller. If it fails to open the matching firmware
1719          * patch file, it tries to open the default firmware patch file.
1720          * If no patch file is found, allow the device to operate without
1721          * a patch.
1722          */
1723         fw = btusb_setup_intel_get_fw(hdev, ver);
1724         if (!fw) {
1725                 kfree_skb(skb);
1726                 goto complete;
1727         }
1728         fw_ptr = fw->data;
1729
1730         kfree_skb(skb);
1731
1732         /* This Intel specific command enables the manufacturer mode of the
1733          * controller.
1734          *
1735          * Only while this mode is enabled, the driver can download the
1736          * firmware patch data and configuration parameters.
1737          */
1738         skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
1739         if (IS_ERR(skb)) {
1740                 BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
1741                        hdev->name, PTR_ERR(skb));
1742                 release_firmware(fw);
1743                 return PTR_ERR(skb);
1744         }
1745
1746         kfree_skb(skb);
1747
1748         disable_patch = 1;
1749
1750         /* The firmware data file consists of list of Intel specific HCI
1751          * commands and its expected events. The first byte indicates the
1752          * type of the message, either HCI command or HCI event.
1753          *
1754          * It reads the command and its expected event from the firmware file,
1755          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1756          * the returned event is compared with the event read from the firmware
1757          * file and it will continue until all the messages are downloaded to
1758          * the controller.
1759          *
1760          * Once the firmware patching is completed successfully,
1761          * the manufacturer mode is disabled with reset and activating the
1762          * downloaded patch.
1763          *
1764          * If the firmware patching fails, the manufacturer mode is
1765          * disabled with reset and deactivating the patch.
1766          *
1767          * If the default patch file is used, no reset is done when disabling
1768          * the manufacturer.
1769          */
1770         while (fw->size > fw_ptr - fw->data) {
1771                 int ret;
1772
1773                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1774                                                  &disable_patch);
1775                 if (ret < 0)
1776                         goto exit_mfg_deactivate;
1777         }
1778
1779         release_firmware(fw);
1780
1781         if (disable_patch)
1782                 goto exit_mfg_disable;
1783
1784         /* Patching completed successfully and disable the manufacturer mode
1785          * with reset and activate the downloaded firmware patches.
1786          */
1787         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
1788                              mfg_reset_activate, HCI_INIT_TIMEOUT);
1789         if (IS_ERR(skb)) {
1790                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1791                        hdev->name, PTR_ERR(skb));
1792                 return PTR_ERR(skb);
1793         }
1794         kfree_skb(skb);
1795
1796         BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1797                 hdev->name);
1798
1799         goto complete;
1800
1801 exit_mfg_disable:
1802         /* Disable the manufacturer mode without reset */
1803         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
1804                              HCI_INIT_TIMEOUT);
1805         if (IS_ERR(skb)) {
1806                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1807                        hdev->name, PTR_ERR(skb));
1808                 return PTR_ERR(skb);
1809         }
1810         kfree_skb(skb);
1811
1812         BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1813
1814         goto complete;
1815
1816 exit_mfg_deactivate:
1817         release_firmware(fw);
1818
1819         /* Patching failed. Disable the manufacturer mode with reset and
1820          * deactivate the downloaded firmware patches.
1821          */
1822         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
1823                              mfg_reset_deactivate, HCI_INIT_TIMEOUT);
1824         if (IS_ERR(skb)) {
1825                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1826                        hdev->name, PTR_ERR(skb));
1827                 return PTR_ERR(skb);
1828         }
1829         kfree_skb(skb);
1830
1831         BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1832                 hdev->name);
1833
1834 complete:
1835         /* Set the event mask for Intel specific vendor events. This enables
1836          * a few extra events that are useful during general operation.
1837          */
1838         btintel_set_event_mask_mfg(hdev, false);
1839
1840         btintel_check_bdaddr(hdev);
1841         return 0;
1842 }
1843
1844 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
1845 {
1846         struct sk_buff *skb;
1847         struct hci_event_hdr *hdr;
1848         struct hci_ev_cmd_complete *evt;
1849
1850         skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_ATOMIC);
1851         if (!skb)
1852                 return -ENOMEM;
1853
1854         hdr = (struct hci_event_hdr *)skb_put(skb, sizeof(*hdr));
1855         hdr->evt = HCI_EV_CMD_COMPLETE;
1856         hdr->plen = sizeof(*evt) + 1;
1857
1858         evt = (struct hci_ev_cmd_complete *)skb_put(skb, sizeof(*evt));
1859         evt->ncmd = 0x01;
1860         evt->opcode = cpu_to_le16(opcode);
1861
1862         *skb_put(skb, 1) = 0x00;
1863
1864         bt_cb(skb)->pkt_type = HCI_EVENT_PKT;
1865
1866         return hci_recv_frame(hdev, skb);
1867 }
1868
1869 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
1870                                  int count)
1871 {
1872         /* When the device is in bootloader mode, then it can send
1873          * events via the bulk endpoint. These events are treated the
1874          * same way as the ones received from the interrupt endpoint.
1875          */
1876         if (test_bit(BTUSB_BOOTLOADER, &data->flags))
1877                 return btusb_recv_intr(data, buffer, count);
1878
1879         return btusb_recv_bulk(data, buffer, count);
1880 }
1881
1882 static void btusb_intel_bootup(struct btusb_data *data, const void *ptr,
1883                                unsigned int len)
1884 {
1885         const struct intel_bootup *evt = ptr;
1886
1887         if (len != sizeof(*evt))
1888                 return;
1889
1890         if (test_and_clear_bit(BTUSB_BOOTING, &data->flags)) {
1891                 smp_mb__after_atomic();
1892                 wake_up_bit(&data->flags, BTUSB_BOOTING);
1893         }
1894 }
1895
1896 static void btusb_intel_secure_send_result(struct btusb_data *data,
1897                                            const void *ptr, unsigned int len)
1898 {
1899         const struct intel_secure_send_result *evt = ptr;
1900
1901         if (len != sizeof(*evt))
1902                 return;
1903
1904         if (evt->result)
1905                 set_bit(BTUSB_FIRMWARE_FAILED, &data->flags);
1906
1907         if (test_and_clear_bit(BTUSB_DOWNLOADING, &data->flags) &&
1908             test_bit(BTUSB_FIRMWARE_LOADED, &data->flags)) {
1909                 smp_mb__after_atomic();
1910                 wake_up_bit(&data->flags, BTUSB_DOWNLOADING);
1911         }
1912 }
1913
1914 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
1915 {
1916         struct btusb_data *data = hci_get_drvdata(hdev);
1917
1918         if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1919                 struct hci_event_hdr *hdr = (void *)skb->data;
1920
1921                 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
1922                     hdr->plen > 0) {
1923                         const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
1924                         unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
1925
1926                         switch (skb->data[2]) {
1927                         case 0x02:
1928                                 /* When switching to the operational firmware
1929                                  * the device sends a vendor specific event
1930                                  * indicating that the bootup completed.
1931                                  */
1932                                 btusb_intel_bootup(data, ptr, len);
1933                                 break;
1934                         case 0x06:
1935                                 /* When the firmware loading completes the
1936                                  * device sends out a vendor specific event
1937                                  * indicating the result of the firmware
1938                                  * loading.
1939                                  */
1940                                 btusb_intel_secure_send_result(data, ptr, len);
1941                                 break;
1942                         }
1943                 }
1944         }
1945
1946         return hci_recv_frame(hdev, skb);
1947 }
1948
1949 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
1950 {
1951         struct btusb_data *data = hci_get_drvdata(hdev);
1952         struct urb *urb;
1953
1954         BT_DBG("%s", hdev->name);
1955
1956         switch (bt_cb(skb)->pkt_type) {
1957         case HCI_COMMAND_PKT:
1958                 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1959                         struct hci_command_hdr *cmd = (void *)skb->data;
1960                         __u16 opcode = le16_to_cpu(cmd->opcode);
1961
1962                         /* When in bootloader mode and the command 0xfc09
1963                          * is received, it needs to be send down the
1964                          * bulk endpoint. So allocate a bulk URB instead.
1965                          */
1966                         if (opcode == 0xfc09)
1967                                 urb = alloc_bulk_urb(hdev, skb);
1968                         else
1969                                 urb = alloc_ctrl_urb(hdev, skb);
1970
1971                         /* When the 0xfc01 command is issued to boot into
1972                          * the operational firmware, it will actually not
1973                          * send a command complete event. To keep the flow
1974                          * control working inject that event here.
1975                          */
1976                         if (opcode == 0xfc01)
1977                                 inject_cmd_complete(hdev, opcode);
1978                 } else {
1979                         urb = alloc_ctrl_urb(hdev, skb);
1980                 }
1981                 if (IS_ERR(urb))
1982                         return PTR_ERR(urb);
1983
1984                 hdev->stat.cmd_tx++;
1985                 return submit_or_queue_tx_urb(hdev, urb);
1986
1987         case HCI_ACLDATA_PKT:
1988                 urb = alloc_bulk_urb(hdev, skb);
1989                 if (IS_ERR(urb))
1990                         return PTR_ERR(urb);
1991
1992                 hdev->stat.acl_tx++;
1993                 return submit_or_queue_tx_urb(hdev, urb);
1994
1995         case HCI_SCODATA_PKT:
1996                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1997                         return -ENODEV;
1998
1999                 urb = alloc_isoc_urb(hdev, skb);
2000                 if (IS_ERR(urb))
2001                         return PTR_ERR(urb);
2002
2003                 hdev->stat.sco_tx++;
2004                 return submit_tx_urb(hdev, urb);
2005         }
2006
2007         return -EILSEQ;
2008 }
2009
2010 static int btusb_setup_intel_new(struct hci_dev *hdev)
2011 {
2012         static const u8 reset_param[] = { 0x00, 0x01, 0x00, 0x01,
2013                                           0x00, 0x08, 0x04, 0x00 };
2014         struct btusb_data *data = hci_get_drvdata(hdev);
2015         struct sk_buff *skb;
2016         struct intel_version *ver;
2017         struct intel_boot_params *params;
2018         const struct firmware *fw;
2019         const u8 *fw_ptr;
2020         u32 frag_len;
2021         char fwname[64];
2022         ktime_t calltime, delta, rettime;
2023         unsigned long long duration;
2024         int err;
2025
2026         BT_DBG("%s", hdev->name);
2027
2028         calltime = ktime_get();
2029
2030         /* Read the Intel version information to determine if the device
2031          * is in bootloader mode or if it already has operational firmware
2032          * loaded.
2033          */
2034         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
2035         if (IS_ERR(skb)) {
2036                 BT_ERR("%s: Reading Intel version information failed (%ld)",
2037                        hdev->name, PTR_ERR(skb));
2038                 return PTR_ERR(skb);
2039         }
2040
2041         if (skb->len != sizeof(*ver)) {
2042                 BT_ERR("%s: Intel version event size mismatch", hdev->name);
2043                 kfree_skb(skb);
2044                 return -EILSEQ;
2045         }
2046
2047         ver = (struct intel_version *)skb->data;
2048
2049         /* The hardware platform number has a fixed value of 0x37 and
2050          * for now only accept this single value.
2051          */
2052         if (ver->hw_platform != 0x37) {
2053                 BT_ERR("%s: Unsupported Intel hardware platform (%u)",
2054                        hdev->name, ver->hw_platform);
2055                 kfree_skb(skb);
2056                 return -EINVAL;
2057         }
2058
2059         /* At the moment the iBT 3.0 hardware variants 0x0b (LnP/SfP)
2060          * and 0x0c (WsP) are supported by this firmware loading method.
2061          *
2062          * This check has been put in place to ensure correct forward
2063          * compatibility options when newer hardware variants come along.
2064          */
2065         if (ver->hw_variant != 0x0b && ver->hw_variant != 0x0c) {
2066                 BT_ERR("%s: Unsupported Intel hardware variant (%u)",
2067                        hdev->name, ver->hw_variant);
2068                 kfree_skb(skb);
2069                 return -EINVAL;
2070         }
2071
2072         btintel_version_info(hdev, ver);
2073
2074         /* The firmware variant determines if the device is in bootloader
2075          * mode or is running operational firmware. The value 0x06 identifies
2076          * the bootloader and the value 0x23 identifies the operational
2077          * firmware.
2078          *
2079          * When the operational firmware is already present, then only
2080          * the check for valid Bluetooth device address is needed. This
2081          * determines if the device will be added as configured or
2082          * unconfigured controller.
2083          *
2084          * It is not possible to use the Secure Boot Parameters in this
2085          * case since that command is only available in bootloader mode.
2086          */
2087         if (ver->fw_variant == 0x23) {
2088                 kfree_skb(skb);
2089                 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2090                 btintel_check_bdaddr(hdev);
2091                 return 0;
2092         }
2093
2094         /* If the device is not in bootloader mode, then the only possible
2095          * choice is to return an error and abort the device initialization.
2096          */
2097         if (ver->fw_variant != 0x06) {
2098                 BT_ERR("%s: Unsupported Intel firmware variant (%u)",
2099                        hdev->name, ver->fw_variant);
2100                 kfree_skb(skb);
2101                 return -ENODEV;
2102         }
2103
2104         kfree_skb(skb);
2105
2106         /* Read the secure boot parameters to identify the operating
2107          * details of the bootloader.
2108          */
2109         skb = __hci_cmd_sync(hdev, 0xfc0d, 0, NULL, HCI_INIT_TIMEOUT);
2110         if (IS_ERR(skb)) {
2111                 BT_ERR("%s: Reading Intel boot parameters failed (%ld)",
2112                        hdev->name, PTR_ERR(skb));
2113                 return PTR_ERR(skb);
2114         }
2115
2116         if (skb->len != sizeof(*params)) {
2117                 BT_ERR("%s: Intel boot parameters size mismatch", hdev->name);
2118                 kfree_skb(skb);
2119                 return -EILSEQ;
2120         }
2121
2122         params = (struct intel_boot_params *)skb->data;
2123
2124         BT_INFO("%s: Device revision is %u", hdev->name,
2125                 le16_to_cpu(params->dev_revid));
2126
2127         BT_INFO("%s: Secure boot is %s", hdev->name,
2128                 params->secure_boot ? "enabled" : "disabled");
2129
2130         BT_INFO("%s: OTP lock is %s", hdev->name,
2131                 params->otp_lock ? "enabled" : "disabled");
2132
2133         BT_INFO("%s: API lock is %s", hdev->name,
2134                 params->api_lock ? "enabled" : "disabled");
2135
2136         BT_INFO("%s: Debug lock is %s", hdev->name,
2137                 params->debug_lock ? "enabled" : "disabled");
2138
2139         BT_INFO("%s: Minimum firmware build %u week %u %u", hdev->name,
2140                 params->min_fw_build_nn, params->min_fw_build_cw,
2141                 2000 + params->min_fw_build_yy);
2142
2143         /* It is required that every single firmware fragment is acknowledged
2144          * with a command complete event. If the boot parameters indicate
2145          * that this bootloader does not send them, then abort the setup.
2146          */
2147         if (params->limited_cce != 0x00) {
2148                 BT_ERR("%s: Unsupported Intel firmware loading method (%u)",
2149                        hdev->name, params->limited_cce);
2150                 kfree_skb(skb);
2151                 return -EINVAL;
2152         }
2153
2154         /* If the OTP has no valid Bluetooth device address, then there will
2155          * also be no valid address for the operational firmware.
2156          */
2157         if (!bacmp(&params->otp_bdaddr, BDADDR_ANY)) {
2158                 BT_INFO("%s: No device address configured", hdev->name);
2159                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2160         }
2161
2162         /* With this Intel bootloader only the hardware variant and device
2163          * revision information are used to select the right firmware.
2164          *
2165          * Currently this bootloader support is limited to hardware variant
2166          * iBT 3.0 (LnP/SfP) which is identified by the value 11 (0x0b).
2167          */
2168         snprintf(fwname, sizeof(fwname), "intel/ibt-11-%u.sfi",
2169                  le16_to_cpu(params->dev_revid));
2170
2171         err = request_firmware(&fw, fwname, &hdev->dev);
2172         if (err < 0) {
2173                 BT_ERR("%s: Failed to load Intel firmware file (%d)",
2174                        hdev->name, err);
2175                 kfree_skb(skb);
2176                 return err;
2177         }
2178
2179         BT_INFO("%s: Found device firmware: %s", hdev->name, fwname);
2180
2181         /* Save the DDC file name for later use to apply once the firmware
2182          * downloading is done.
2183          */
2184         snprintf(fwname, sizeof(fwname), "intel/ibt-11-%u.ddc",
2185                  le16_to_cpu(params->dev_revid));
2186
2187         kfree_skb(skb);
2188
2189         if (fw->size < 644) {
2190                 BT_ERR("%s: Invalid size of firmware file (%zu)",
2191                        hdev->name, fw->size);
2192                 err = -EBADF;
2193                 goto done;
2194         }
2195
2196         set_bit(BTUSB_DOWNLOADING, &data->flags);
2197
2198         /* Start the firmware download transaction with the Init fragment
2199          * represented by the 128 bytes of CSS header.
2200          */
2201         err = btintel_secure_send(hdev, 0x00, 128, fw->data);
2202         if (err < 0) {
2203                 BT_ERR("%s: Failed to send firmware header (%d)",
2204                        hdev->name, err);
2205                 goto done;
2206         }
2207
2208         /* Send the 256 bytes of public key information from the firmware
2209          * as the PKey fragment.
2210          */
2211         err = btintel_secure_send(hdev, 0x03, 256, fw->data + 128);
2212         if (err < 0) {
2213                 BT_ERR("%s: Failed to send firmware public key (%d)",
2214                        hdev->name, err);
2215                 goto done;
2216         }
2217
2218         /* Send the 256 bytes of signature information from the firmware
2219          * as the Sign fragment.
2220          */
2221         err = btintel_secure_send(hdev, 0x02, 256, fw->data + 388);
2222         if (err < 0) {
2223                 BT_ERR("%s: Failed to send firmware signature (%d)",
2224                        hdev->name, err);
2225                 goto done;
2226         }
2227
2228         fw_ptr = fw->data + 644;
2229         frag_len = 0;
2230
2231         while (fw_ptr - fw->data < fw->size) {
2232                 struct hci_command_hdr *cmd = (void *)(fw_ptr + frag_len);
2233
2234                 frag_len += sizeof(*cmd) + cmd->plen;
2235
2236                 /* The parameter length of the secure send command requires
2237                  * a 4 byte alignment. It happens so that the firmware file
2238                  * contains proper Intel_NOP commands to align the fragments
2239                  * as needed.
2240                  *
2241                  * Send set of commands with 4 byte alignment from the
2242                  * firmware data buffer as a single Data fragement.
2243                  */
2244                 if (!(frag_len % 4)) {
2245                         err = btintel_secure_send(hdev, 0x01, frag_len, fw_ptr);
2246                         if (err < 0) {
2247                                 BT_ERR("%s: Failed to send firmware data (%d)",
2248                                        hdev->name, err);
2249                                 goto done;
2250                         }
2251
2252                         fw_ptr += frag_len;
2253                         frag_len = 0;
2254                 }
2255         }
2256
2257         set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2258
2259         BT_INFO("%s: Waiting for firmware download to complete", hdev->name);
2260
2261         /* Before switching the device into operational mode and with that
2262          * booting the loaded firmware, wait for the bootloader notification
2263          * that all fragments have been successfully received.
2264          *
2265          * When the event processing receives the notification, then the
2266          * BTUSB_DOWNLOADING flag will be cleared.
2267          *
2268          * The firmware loading should not take longer than 5 seconds
2269          * and thus just timeout if that happens and fail the setup
2270          * of this device.
2271          */
2272         err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
2273                                   TASK_INTERRUPTIBLE,
2274                                   msecs_to_jiffies(5000));
2275         if (err == 1) {
2276                 BT_ERR("%s: Firmware loading interrupted", hdev->name);
2277                 err = -EINTR;
2278                 goto done;
2279         }
2280
2281         if (err) {
2282                 BT_ERR("%s: Firmware loading timeout", hdev->name);
2283                 err = -ETIMEDOUT;
2284                 goto done;
2285         }
2286
2287         if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) {
2288                 BT_ERR("%s: Firmware loading failed", hdev->name);
2289                 err = -ENOEXEC;
2290                 goto done;
2291         }
2292
2293         rettime = ktime_get();
2294         delta = ktime_sub(rettime, calltime);
2295         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2296
2297         BT_INFO("%s: Firmware loaded in %llu usecs", hdev->name, duration);
2298
2299 done:
2300         release_firmware(fw);
2301
2302         if (err < 0)
2303                 return err;
2304
2305         calltime = ktime_get();
2306
2307         set_bit(BTUSB_BOOTING, &data->flags);
2308
2309         skb = __hci_cmd_sync(hdev, 0xfc01, sizeof(reset_param), reset_param,
2310                              HCI_INIT_TIMEOUT);
2311         if (IS_ERR(skb))
2312                 return PTR_ERR(skb);
2313
2314         kfree_skb(skb);
2315
2316         /* The bootloader will not indicate when the device is ready. This
2317          * is done by the operational firmware sending bootup notification.
2318          *
2319          * Booting into operational firmware should not take longer than
2320          * 1 second. However if that happens, then just fail the setup
2321          * since something went wrong.
2322          */
2323         BT_INFO("%s: Waiting for device to boot", hdev->name);
2324
2325         err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING,
2326                                   TASK_INTERRUPTIBLE,
2327                                   msecs_to_jiffies(1000));
2328
2329         if (err == 1) {
2330                 BT_ERR("%s: Device boot interrupted", hdev->name);
2331                 return -EINTR;
2332         }
2333
2334         if (err) {
2335                 BT_ERR("%s: Device boot timeout", hdev->name);
2336                 return -ETIMEDOUT;
2337         }
2338
2339         rettime = ktime_get();
2340         delta = ktime_sub(rettime, calltime);
2341         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2342
2343         BT_INFO("%s: Device booted in %llu usecs", hdev->name, duration);
2344
2345         clear_bit(BTUSB_BOOTLOADER, &data->flags);
2346
2347         /* Once the device is running in operational mode, it needs to apply
2348          * the device configuration (DDC) parameters.
2349          *
2350          * The device can work without DDC parameters, so even if it fails
2351          * to load the file, no need to fail the setup.
2352          */
2353         btintel_load_ddc_config(hdev, fwname);
2354
2355         /* Set the event mask for Intel specific vendor events. This enables
2356          * a few extra events that are useful during general operation. It
2357          * does not enable any debugging related events.
2358          *
2359          * The device will function correctly without these events enabled
2360          * and thus no need to fail the setup.
2361          */
2362         btintel_set_event_mask(hdev, false);
2363
2364         return 0;
2365 }
2366
2367 static int btusb_shutdown_intel(struct hci_dev *hdev)
2368 {
2369         struct sk_buff *skb;
2370         long ret;
2371
2372         /* Some platforms have an issue with BT LED when the interface is
2373          * down or BT radio is turned off, which takes 5 seconds to BT LED
2374          * goes off. This command turns off the BT LED immediately.
2375          */
2376         skb = __hci_cmd_sync(hdev, 0xfc3f, 0, NULL, HCI_INIT_TIMEOUT);
2377         if (IS_ERR(skb)) {
2378                 ret = PTR_ERR(skb);
2379                 BT_ERR("%s: turning off Intel device LED failed (%ld)",
2380                        hdev->name, ret);
2381                 return ret;
2382         }
2383         kfree_skb(skb);
2384
2385         return 0;
2386 }
2387
2388 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
2389                                     const bdaddr_t *bdaddr)
2390 {
2391         struct sk_buff *skb;
2392         u8 buf[8];
2393         long ret;
2394
2395         buf[0] = 0xfe;
2396         buf[1] = sizeof(bdaddr_t);
2397         memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
2398
2399         skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2400         if (IS_ERR(skb)) {
2401                 ret = PTR_ERR(skb);
2402                 BT_ERR("%s: changing Marvell device address failed (%ld)",
2403                        hdev->name, ret);
2404                 return ret;
2405         }
2406         kfree_skb(skb);
2407
2408         return 0;
2409 }
2410
2411 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
2412                                     const bdaddr_t *bdaddr)
2413 {
2414         struct sk_buff *skb;
2415         u8 buf[10];
2416         long ret;
2417
2418         buf[0] = 0x01;
2419         buf[1] = 0x01;
2420         buf[2] = 0x00;
2421         buf[3] = sizeof(bdaddr_t);
2422         memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
2423
2424         skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2425         if (IS_ERR(skb)) {
2426                 ret = PTR_ERR(skb);
2427                 BT_ERR("%s: Change address command failed (%ld)",
2428                        hdev->name, ret);
2429                 return ret;
2430         }
2431         kfree_skb(skb);
2432
2433         return 0;
2434 }
2435
2436 #define QCA_DFU_PACKET_LEN      4096
2437
2438 #define QCA_GET_TARGET_VERSION  0x09
2439 #define QCA_CHECK_STATUS        0x05
2440 #define QCA_DFU_DOWNLOAD        0x01
2441
2442 #define QCA_SYSCFG_UPDATED      0x40
2443 #define QCA_PATCH_UPDATED       0x80
2444 #define QCA_DFU_TIMEOUT         3000
2445
2446 struct qca_version {
2447         __le32  rom_version;
2448         __le32  patch_version;
2449         __le32  ram_version;
2450         __le32  ref_clock;
2451         __u8    reserved[4];
2452 } __packed;
2453
2454 struct qca_rampatch_version {
2455         __le16  rom_version;
2456         __le16  patch_version;
2457 } __packed;
2458
2459 struct qca_device_info {
2460         u32     rom_version;
2461         u8      rampatch_hdr;   /* length of header in rampatch */
2462         u8      nvm_hdr;        /* length of header in NVM */
2463         u8      ver_offset;     /* offset of version structure in rampatch */
2464 };
2465
2466 static const struct qca_device_info qca_devices_table[] = {
2467         { 0x00000100, 20, 4, 10 }, /* Rome 1.0 */
2468         { 0x00000101, 20, 4, 10 }, /* Rome 1.1 */
2469         { 0x00000200, 28, 4, 18 }, /* Rome 2.0 */
2470         { 0x00000201, 28, 4, 18 }, /* Rome 2.1 */
2471         { 0x00000300, 28, 4, 18 }, /* Rome 3.0 */
2472         { 0x00000302, 28, 4, 18 }, /* Rome 3.2 */
2473 };
2474
2475 static int btusb_qca_send_vendor_req(struct hci_dev *hdev, u8 request,
2476                                      void *data, u16 size)
2477 {
2478         struct btusb_data *btdata = hci_get_drvdata(hdev);
2479         struct usb_device *udev = btdata->udev;
2480         int pipe, err;
2481         u8 *buf;
2482
2483         buf = kmalloc(size, GFP_KERNEL);
2484         if (!buf)
2485                 return -ENOMEM;
2486
2487         /* Found some of USB hosts have IOT issues with ours so that we should
2488          * not wait until HCI layer is ready.
2489          */
2490         pipe = usb_rcvctrlpipe(udev, 0);
2491         err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
2492                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2493         if (err < 0) {
2494                 BT_ERR("%s: Failed to access otp area (%d)", hdev->name, err);
2495                 goto done;
2496         }
2497
2498         memcpy(data, buf, size);
2499
2500 done:
2501         kfree(buf);
2502
2503         return err;
2504 }
2505
2506 static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
2507                                        const struct firmware *firmware,
2508                                        size_t hdr_size)
2509 {
2510         struct btusb_data *btdata = hci_get_drvdata(hdev);
2511         struct usb_device *udev = btdata->udev;
2512         size_t count, size, sent = 0;
2513         int pipe, len, err;
2514         u8 *buf;
2515
2516         buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
2517         if (!buf)
2518                 return -ENOMEM;
2519
2520         count = firmware->size;
2521
2522         size = min_t(size_t, count, hdr_size);
2523         memcpy(buf, firmware->data, size);
2524
2525         /* USB patches should go down to controller through USB path
2526          * because binary format fits to go down through USB channel.
2527          * USB control path is for patching headers and USB bulk is for
2528          * patch body.
2529          */
2530         pipe = usb_sndctrlpipe(udev, 0);
2531         err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
2532                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2533         if (err < 0) {
2534                 BT_ERR("%s: Failed to send headers (%d)", hdev->name, err);
2535                 goto done;
2536         }
2537
2538         sent += size;
2539         count -= size;
2540
2541         while (count) {
2542                 size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
2543
2544                 memcpy(buf, firmware->data + sent, size);
2545
2546                 pipe = usb_sndbulkpipe(udev, 0x02);
2547                 err = usb_bulk_msg(udev, pipe, buf, size, &len,
2548                                    QCA_DFU_TIMEOUT);
2549                 if (err < 0) {
2550                         BT_ERR("%s: Failed to send body at %zd of %zd (%d)",
2551                                hdev->name, sent, firmware->size, err);
2552                         break;
2553                 }
2554
2555                 if (size != len) {
2556                         BT_ERR("%s: Failed to get bulk buffer", hdev->name);
2557                         err = -EILSEQ;
2558                         break;
2559                 }
2560
2561                 sent  += size;
2562                 count -= size;
2563         }
2564
2565 done:
2566         kfree(buf);
2567         return err;
2568 }
2569
2570 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
2571                                          struct qca_version *ver,
2572                                          const struct qca_device_info *info)
2573 {
2574         struct qca_rampatch_version *rver;
2575         const struct firmware *fw;
2576         u32 ver_rom, ver_patch;
2577         u16 rver_rom, rver_patch;
2578         char fwname[64];
2579         int err;
2580
2581         ver_rom = le32_to_cpu(ver->rom_version);
2582         ver_patch = le32_to_cpu(ver->patch_version);
2583
2584         snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom);
2585
2586         err = request_firmware(&fw, fwname, &hdev->dev);
2587         if (err) {
2588                 BT_ERR("%s: failed to request rampatch file: %s (%d)",
2589                        hdev->name, fwname, err);
2590                 return err;
2591         }
2592
2593         BT_INFO("%s: using rampatch file: %s", hdev->name, fwname);
2594
2595         rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
2596         rver_rom = le16_to_cpu(rver->rom_version);
2597         rver_patch = le16_to_cpu(rver->patch_version);
2598
2599         BT_INFO("%s: QCA: patch rome 0x%x build 0x%x, firmware rome 0x%x "
2600                 "build 0x%x", hdev->name, rver_rom, rver_patch, ver_rom,
2601                 ver_patch);
2602
2603         if (rver_rom != ver_rom || rver_patch <= ver_patch) {
2604                 BT_ERR("%s: rampatch file version did not match with firmware",
2605                        hdev->name);
2606                 err = -EINVAL;
2607                 goto done;
2608         }
2609
2610         err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
2611
2612 done:
2613         release_firmware(fw);
2614
2615         return err;
2616 }
2617
2618 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
2619                                     struct qca_version *ver,
2620                                     const struct qca_device_info *info)
2621 {
2622         const struct firmware *fw;
2623         char fwname[64];
2624         int err;
2625
2626         snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x.bin",
2627                  le32_to_cpu(ver->rom_version));
2628
2629         err = request_firmware(&fw, fwname, &hdev->dev);
2630         if (err) {
2631                 BT_ERR("%s: failed to request NVM file: %s (%d)",
2632                        hdev->name, fwname, err);
2633                 return err;
2634         }
2635
2636         BT_INFO("%s: using NVM file: %s", hdev->name, fwname);
2637
2638         err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
2639
2640         release_firmware(fw);
2641
2642         return err;
2643 }
2644
2645 static int btusb_setup_qca(struct hci_dev *hdev)
2646 {
2647         const struct qca_device_info *info = NULL;
2648         struct qca_version ver;
2649         u32 ver_rom;
2650         u8 status;
2651         int i, err;
2652
2653         err = btusb_qca_send_vendor_req(hdev, QCA_GET_TARGET_VERSION, &ver,
2654                                         sizeof(ver));
2655         if (err < 0)
2656                 return err;
2657
2658         ver_rom = le32_to_cpu(ver.rom_version);
2659         for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
2660                 if (ver_rom == qca_devices_table[i].rom_version)
2661                         info = &qca_devices_table[i];
2662         }
2663         if (!info) {
2664                 BT_ERR("%s: don't support firmware rome 0x%x", hdev->name,
2665                        ver_rom);
2666                 return -ENODEV;
2667         }
2668
2669         err = btusb_qca_send_vendor_req(hdev, QCA_CHECK_STATUS, &status,
2670                                         sizeof(status));
2671         if (err < 0)
2672                 return err;
2673
2674         if (!(status & QCA_PATCH_UPDATED)) {
2675                 err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
2676                 if (err < 0)
2677                         return err;
2678         }
2679
2680         if (!(status & QCA_SYSCFG_UPDATED)) {
2681                 err = btusb_setup_qca_load_nvm(hdev, &ver, info);
2682                 if (err < 0)
2683                         return err;
2684         }
2685
2686         return 0;
2687 }
2688
2689 #ifdef CONFIG_BT_HCIBTUSB_BCM
2690 static inline int __set_diag_interface(struct hci_dev *hdev)
2691 {
2692         struct btusb_data *data = hci_get_drvdata(hdev);
2693         struct usb_interface *intf = data->diag;
2694         int i;
2695
2696         if (!data->diag)
2697                 return -ENODEV;
2698
2699         data->diag_tx_ep = NULL;
2700         data->diag_rx_ep = NULL;
2701
2702         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2703                 struct usb_endpoint_descriptor *ep_desc;
2704
2705                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2706
2707                 if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
2708                         data->diag_tx_ep = ep_desc;
2709                         continue;
2710                 }
2711
2712                 if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
2713                         data->diag_rx_ep = ep_desc;
2714                         continue;
2715                 }
2716         }
2717
2718         if (!data->diag_tx_ep || !data->diag_rx_ep) {
2719                 BT_ERR("%s invalid diagnostic descriptors", hdev->name);
2720                 return -ENODEV;
2721         }
2722
2723         return 0;
2724 }
2725
2726 static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable)
2727 {
2728         struct btusb_data *data = hci_get_drvdata(hdev);
2729         struct sk_buff *skb;
2730         struct urb *urb;
2731         unsigned int pipe;
2732
2733         if (!data->diag_tx_ep)
2734                 return ERR_PTR(-ENODEV);
2735
2736         urb = usb_alloc_urb(0, GFP_KERNEL);
2737         if (!urb)
2738                 return ERR_PTR(-ENOMEM);
2739
2740         skb = bt_skb_alloc(2, GFP_KERNEL);
2741         if (!skb) {
2742                 usb_free_urb(urb);
2743                 return ERR_PTR(-ENOMEM);
2744         }
2745
2746         *skb_put(skb, 1) = 0xf0;
2747         *skb_put(skb, 1) = enable;
2748
2749         pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress);
2750
2751         usb_fill_bulk_urb(urb, data->udev, pipe,
2752                           skb->data, skb->len, btusb_tx_complete, skb);
2753
2754         skb->dev = (void *)hdev;
2755
2756         return urb;
2757 }
2758
2759 static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable)
2760 {
2761         struct btusb_data *data = hci_get_drvdata(hdev);
2762         struct urb *urb;
2763
2764         if (!data->diag)
2765                 return -ENODEV;
2766
2767         if (!test_bit(HCI_RUNNING, &hdev->flags))
2768                 return -ENETDOWN;
2769
2770         urb = alloc_diag_urb(hdev, enable);
2771         if (IS_ERR(urb))
2772                 return PTR_ERR(urb);
2773
2774         return submit_or_queue_tx_urb(hdev, urb);
2775 }
2776 #endif
2777
2778 static int btusb_probe(struct usb_interface *intf,
2779                        const struct usb_device_id *id)
2780 {
2781         struct usb_endpoint_descriptor *ep_desc;
2782         struct btusb_data *data;
2783         struct hci_dev *hdev;
2784         unsigned ifnum_base;
2785         int i, err;
2786
2787         BT_DBG("intf %p id %p", intf, id);
2788
2789         /* interface numbers are hardcoded in the spec */
2790         if (intf->cur_altsetting->desc.bInterfaceNumber != 0) {
2791                 if (!(id->driver_info & BTUSB_IFNUM_2))
2792                         return -ENODEV;
2793                 if (intf->cur_altsetting->desc.bInterfaceNumber != 2)
2794                         return -ENODEV;
2795         }
2796
2797         ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber;
2798
2799         if (!id->driver_info) {
2800                 const struct usb_device_id *match;
2801
2802                 match = usb_match_id(intf, blacklist_table);
2803                 if (match)
2804                         id = match;
2805         }
2806
2807         if (id->driver_info == BTUSB_IGNORE)
2808                 return -ENODEV;
2809
2810         if (id->driver_info & BTUSB_ATH3012) {
2811                 struct usb_device *udev = interface_to_usbdev(intf);
2812
2813                 /* Old firmware would otherwise let ath3k driver load
2814                  * patch and sysconfig files */
2815                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
2816                         return -ENODEV;
2817         }
2818
2819         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
2820         if (!data)
2821                 return -ENOMEM;
2822
2823         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2824                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2825
2826                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
2827                         data->intr_ep = ep_desc;
2828                         continue;
2829                 }
2830
2831                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
2832                         data->bulk_tx_ep = ep_desc;
2833                         continue;
2834                 }
2835
2836                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
2837                         data->bulk_rx_ep = ep_desc;
2838                         continue;
2839                 }
2840         }
2841
2842         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
2843                 return -ENODEV;
2844
2845         if (id->driver_info & BTUSB_AMP) {
2846                 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
2847                 data->cmdreq = 0x2b;
2848         } else {
2849                 data->cmdreq_type = USB_TYPE_CLASS;
2850                 data->cmdreq = 0x00;
2851         }
2852
2853         data->udev = interface_to_usbdev(intf);
2854         data->intf = intf;
2855
2856         INIT_WORK(&data->work, btusb_work);
2857         INIT_WORK(&data->waker, btusb_waker);
2858         init_usb_anchor(&data->deferred);
2859         init_usb_anchor(&data->tx_anchor);
2860         spin_lock_init(&data->txlock);
2861
2862         init_usb_anchor(&data->intr_anchor);
2863         init_usb_anchor(&data->bulk_anchor);
2864         init_usb_anchor(&data->isoc_anchor);
2865         init_usb_anchor(&data->diag_anchor);
2866         spin_lock_init(&data->rxlock);
2867
2868         if (id->driver_info & BTUSB_INTEL_NEW) {
2869                 data->recv_event = btusb_recv_event_intel;
2870                 data->recv_bulk = btusb_recv_bulk_intel;
2871                 set_bit(BTUSB_BOOTLOADER, &data->flags);
2872         } else {
2873                 data->recv_event = hci_recv_frame;
2874                 data->recv_bulk = btusb_recv_bulk;
2875         }
2876
2877         hdev = hci_alloc_dev();
2878         if (!hdev)
2879                 return -ENOMEM;
2880
2881         hdev->bus = HCI_USB;
2882         hci_set_drvdata(hdev, data);
2883
2884         if (id->driver_info & BTUSB_AMP)
2885                 hdev->dev_type = HCI_AMP;
2886         else
2887                 hdev->dev_type = HCI_BREDR;
2888
2889         data->hdev = hdev;
2890
2891         SET_HCIDEV_DEV(hdev, &intf->dev);
2892
2893         hdev->open   = btusb_open;
2894         hdev->close  = btusb_close;
2895         hdev->flush  = btusb_flush;
2896         hdev->send   = btusb_send_frame;
2897         hdev->notify = btusb_notify;
2898
2899         if (id->driver_info & BTUSB_BCM2045)
2900                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
2901
2902         if (id->driver_info & BTUSB_BCM92035)
2903                 hdev->setup = btusb_setup_bcm92035;
2904
2905 #ifdef CONFIG_BT_HCIBTUSB_BCM
2906         if (id->driver_info & BTUSB_BCM_PATCHRAM) {
2907                 hdev->manufacturer = 15;
2908                 hdev->setup = btbcm_setup_patchram;
2909                 hdev->set_diag = btusb_bcm_set_diag;
2910                 hdev->set_bdaddr = btbcm_set_bdaddr;
2911
2912                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
2913                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
2914         }
2915
2916         if (id->driver_info & BTUSB_BCM_APPLE) {
2917                 hdev->manufacturer = 15;
2918                 hdev->setup = btbcm_setup_apple;
2919                 hdev->set_diag = btusb_bcm_set_diag;
2920
2921                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
2922                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
2923         }
2924 #endif
2925
2926         if (id->driver_info & BTUSB_INTEL) {
2927                 hdev->manufacturer = 2;
2928                 hdev->setup = btusb_setup_intel;
2929                 hdev->shutdown = btusb_shutdown_intel;
2930                 hdev->set_diag = btintel_set_diag_mfg;
2931                 hdev->set_bdaddr = btintel_set_bdaddr;
2932                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2933                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
2934                 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
2935         }
2936
2937         if (id->driver_info & BTUSB_INTEL_NEW) {
2938                 hdev->manufacturer = 2;
2939                 hdev->send = btusb_send_frame_intel;
2940                 hdev->setup = btusb_setup_intel_new;
2941                 hdev->hw_error = btintel_hw_error;
2942                 hdev->set_diag = btintel_set_diag;
2943                 hdev->set_bdaddr = btintel_set_bdaddr;
2944                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2945                 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
2946         }
2947
2948         if (id->driver_info & BTUSB_MARVELL)
2949                 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
2950
2951         if (id->driver_info & BTUSB_SWAVE) {
2952                 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
2953                 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
2954         }
2955
2956         if (id->driver_info & BTUSB_INTEL_BOOT) {
2957                 hdev->manufacturer = 2;
2958                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
2959         }
2960
2961         if (id->driver_info & BTUSB_ATH3012) {
2962                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
2963                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
2964                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2965         }
2966
2967         if (id->driver_info & BTUSB_QCA_ROME) {
2968                 data->setup_on_usb = btusb_setup_qca;
2969                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
2970         }
2971
2972 #ifdef CONFIG_BT_HCIBTUSB_RTL
2973         if (id->driver_info & BTUSB_REALTEK) {
2974                 hdev->setup = btrtl_setup_realtek;
2975
2976                 /* Realtek devices lose their updated firmware over suspend,
2977                  * but the USB hub doesn't notice any status change.
2978                  * Explicitly request a device reset on resume.
2979                  */
2980                 set_bit(BTUSB_RESET_RESUME, &data->flags);
2981         }
2982 #endif
2983
2984         if (id->driver_info & BTUSB_AMP) {
2985                 /* AMP controllers do not support SCO packets */
2986                 data->isoc = NULL;
2987         } else {
2988                 /* Interface orders are hardcoded in the specification */
2989                 data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1);
2990         }
2991
2992         if (!reset)
2993                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2994
2995         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
2996                 if (!disable_scofix)
2997                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
2998         }
2999
3000         if (id->driver_info & BTUSB_BROKEN_ISOC)
3001                 data->isoc = NULL;
3002
3003         if (id->driver_info & BTUSB_DIGIANSWER) {
3004                 data->cmdreq_type = USB_TYPE_VENDOR;
3005                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3006         }
3007
3008         if (id->driver_info & BTUSB_CSR) {
3009                 struct usb_device *udev = data->udev;
3010                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
3011
3012                 /* Old firmware would otherwise execute USB reset */
3013                 if (bcdDevice < 0x117)
3014                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3015
3016                 /* Fake CSR devices with broken commands */
3017                 if (bcdDevice <= 0x100 || bcdDevice == 0x134)
3018                         hdev->setup = btusb_setup_csr;
3019
3020                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3021         }
3022
3023         if (id->driver_info & BTUSB_SNIFFER) {
3024                 struct usb_device *udev = data->udev;
3025
3026                 /* New sniffer firmware has crippled HCI interface */
3027                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
3028                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3029         }
3030
3031         if (id->driver_info & BTUSB_INTEL_BOOT) {
3032                 /* A bug in the bootloader causes that interrupt interface is
3033                  * only enabled after receiving SetInterface(0, AltSetting=0).
3034                  */
3035                 err = usb_set_interface(data->udev, 0, 0);
3036                 if (err < 0) {
3037                         BT_ERR("failed to set interface 0, alt 0 %d", err);
3038                         hci_free_dev(hdev);
3039                         return err;
3040                 }
3041         }
3042
3043         if (data->isoc) {
3044                 err = usb_driver_claim_interface(&btusb_driver,
3045                                                  data->isoc, data);
3046                 if (err < 0) {
3047                         hci_free_dev(hdev);
3048                         return err;
3049                 }
3050         }
3051
3052 #ifdef CONFIG_BT_HCIBTUSB_BCM
3053         if (data->diag) {
3054                 if (!usb_driver_claim_interface(&btusb_driver,
3055                                                 data->diag, data))
3056                         __set_diag_interface(hdev);
3057                 else
3058                         data->diag = NULL;
3059         }
3060 #endif
3061
3062         err = hci_register_dev(hdev);
3063         if (err < 0) {
3064                 hci_free_dev(hdev);
3065                 return err;
3066         }
3067
3068         usb_set_intfdata(intf, data);
3069
3070         return 0;
3071 }
3072
3073 static void btusb_disconnect(struct usb_interface *intf)
3074 {
3075         struct btusb_data *data = usb_get_intfdata(intf);
3076         struct hci_dev *hdev;
3077
3078         BT_DBG("intf %p", intf);
3079
3080         if (!data)
3081                 return;
3082
3083         hdev = data->hdev;
3084         usb_set_intfdata(data->intf, NULL);
3085
3086         if (data->isoc)
3087                 usb_set_intfdata(data->isoc, NULL);
3088
3089         if (data->diag)
3090                 usb_set_intfdata(data->diag, NULL);
3091
3092         hci_unregister_dev(hdev);
3093
3094         if (intf == data->intf) {
3095                 if (data->isoc)
3096                         usb_driver_release_interface(&btusb_driver, data->isoc);
3097                 if (data->diag)
3098                         usb_driver_release_interface(&btusb_driver, data->diag);
3099         } else if (intf == data->isoc) {
3100                 if (data->diag)
3101                         usb_driver_release_interface(&btusb_driver, data->diag);
3102                 usb_driver_release_interface(&btusb_driver, data->intf);
3103         } else if (intf == data->diag) {
3104                 usb_driver_release_interface(&btusb_driver, data->intf);
3105                 if (data->isoc)
3106                         usb_driver_release_interface(&btusb_driver, data->isoc);
3107         }
3108
3109         hci_free_dev(hdev);
3110 }
3111
3112 #ifdef CONFIG_PM
3113 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
3114 {
3115         struct btusb_data *data = usb_get_intfdata(intf);
3116
3117         BT_DBG("intf %p", intf);
3118
3119         if (data->suspend_count++)
3120                 return 0;
3121
3122         spin_lock_irq(&data->txlock);
3123         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
3124                 set_bit(BTUSB_SUSPENDING, &data->flags);
3125                 spin_unlock_irq(&data->txlock);
3126         } else {
3127                 spin_unlock_irq(&data->txlock);
3128                 data->suspend_count--;
3129                 return -EBUSY;
3130         }
3131
3132         cancel_work_sync(&data->work);
3133
3134         btusb_stop_traffic(data);
3135         usb_kill_anchored_urbs(&data->tx_anchor);
3136
3137         /* Optionally request a device reset on resume, but only when
3138          * wakeups are disabled. If wakeups are enabled we assume the
3139          * device will stay powered up throughout suspend.
3140          */
3141         if (test_bit(BTUSB_RESET_RESUME, &data->flags) &&
3142             !device_may_wakeup(&data->udev->dev))
3143                 data->udev->reset_resume = 1;
3144
3145         return 0;
3146 }
3147
3148 static void play_deferred(struct btusb_data *data)
3149 {
3150         struct urb *urb;
3151         int err;
3152
3153         while ((urb = usb_get_from_anchor(&data->deferred))) {
3154                 err = usb_submit_urb(urb, GFP_ATOMIC);
3155                 if (err < 0)
3156                         break;
3157
3158                 data->tx_in_flight++;
3159         }
3160         usb_scuttle_anchored_urbs(&data->deferred);
3161 }
3162
3163 static int btusb_resume(struct usb_interface *intf)
3164 {
3165         struct btusb_data *data = usb_get_intfdata(intf);
3166         struct hci_dev *hdev = data->hdev;
3167         int err = 0;
3168
3169         BT_DBG("intf %p", intf);
3170
3171         if (--data->suspend_count)
3172                 return 0;
3173
3174         if (!test_bit(HCI_RUNNING, &hdev->flags))
3175                 goto done;
3176
3177         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
3178                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
3179                 if (err < 0) {
3180                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
3181                         goto failed;
3182                 }
3183         }
3184
3185         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
3186                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
3187                 if (err < 0) {
3188                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
3189                         goto failed;
3190                 }
3191
3192                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
3193         }
3194
3195         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
3196                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
3197                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
3198                 else
3199                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
3200         }
3201
3202         spin_lock_irq(&data->txlock);
3203         play_deferred(data);
3204         clear_bit(BTUSB_SUSPENDING, &data->flags);
3205         spin_unlock_irq(&data->txlock);
3206         schedule_work(&data->work);
3207
3208         return 0;
3209
3210 failed:
3211         usb_scuttle_anchored_urbs(&data->deferred);
3212 done:
3213         spin_lock_irq(&data->txlock);
3214         clear_bit(BTUSB_SUSPENDING, &data->flags);
3215         spin_unlock_irq(&data->txlock);
3216
3217         return err;
3218 }
3219 #endif
3220
3221 static struct usb_driver btusb_driver = {
3222         .name           = "btusb",
3223         .probe          = btusb_probe,
3224         .disconnect     = btusb_disconnect,
3225 #ifdef CONFIG_PM
3226         .suspend        = btusb_suspend,
3227         .resume         = btusb_resume,
3228 #endif
3229         .id_table       = btusb_table,
3230         .supports_autosuspend = 1,
3231         .disable_hub_initiated_lpm = 1,
3232 };
3233
3234 module_usb_driver(btusb_driver);
3235
3236 module_param(disable_scofix, bool, 0644);
3237 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
3238
3239 module_param(force_scofix, bool, 0644);
3240 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
3241
3242 module_param(reset, bool, 0644);
3243 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
3244
3245 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
3246 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
3247 MODULE_VERSION(VERSION);
3248 MODULE_LICENSE("GPL");