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