drivers/bluetooth/btusb.c

   1 /*
   2  *
   3  *  Generic Bluetooth USB driver
   4  *
   5  *  Copyright (C) 2005-2008  Marcel Holtmann <marcel@holtmann.org>
   6  *
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, write to the Free Software
  20  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  *
  22  */
  23
  24 #include <linux/module.h>
  25 #include <linux/usb.h>
  26 #include <linux/firmware.h>
  27 #include <asm/unaligned.h>
  28
  29 #include <net/bluetooth/bluetooth.h>
  30 #include <net/bluetooth/hci_core.h>
  31
  32 #include "btintel.h"
  33 #include "btbcm.h"
  34 #include "btrtl.h"
  35
  36 #define VERSION "0.8"
  37
  38 static bool disable_scofix;
  39 static bool force_scofix;
  40
  41 static bool reset = true;
  42
  43 static struct usb_driver btusb_driver;
  44
  45 #define BTUSB_IGNORE            0x01
  46 #define BTUSB_DIGIANSWER        0x02
  47 #define BTUSB_CSR               0x04
  48 #define BTUSB_SNIFFER           0x08
  49 #define BTUSB_BCM92035          0x10
  50 #define BTUSB_BROKEN_ISOC       0x20
  51 #define BTUSB_WRONG_SCO_MTU     0x40
  52 #define BTUSB_ATH3012           0x80
  53 #define BTUSB_INTEL             0x100
  54 #define BTUSB_INTEL_BOOT        0x200
  55 #define BTUSB_BCM_PATCHRAM      0x400
  56 #define BTUSB_MARVELL           0x800
  57 #define BTUSB_SWAVE             0x1000
  58 #define BTUSB_INTEL_NEW         0x2000
  59 #define BTUSB_AMP               0x4000
  60 #define BTUSB_QCA_ROME          0x8000
  61 #define BTUSB_BCM_APPLE         0x10000
  62 #define BTUSB_REALTEK           0x20000
  63 #define BTUSB_BCM2045           0x40000
  64 #define BTUSB_IFNUM_2           0x80000
  65 #define BTUSB_CW6622            0x100000
  66
  67 static const struct usb_device_id btusb_table[] = {
  68         /* Generic Bluetooth USB device */
  69         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  70
  71         /* Generic Bluetooth AMP device */
  72         { USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP },
  73
  74         /* Generic Bluetooth USB interface */
  75         { USB_INTERFACE_INFO(0xe0, 0x01, 0x01) },
  76
  77         /* Apple-specific (Broadcom) devices */
  78         { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01),
  79           .driver_info = BTUSB_BCM_APPLE | BTUSB_IFNUM_2 },
  80
  81         /* MediaTek MT76x0E */
  82         { USB_DEVICE(0x0e8d, 0x763f) },
  83
  84         /* Broadcom SoftSailing reporting vendor specific */
  85         { USB_DEVICE(0x0a5c, 0x21e1) },
  86
  87         /* Apple MacBookPro 7,1 */
  88         { USB_DEVICE(0x05ac, 0x8213) },
  89
  90         /* Apple iMac11,1 */
  91         { USB_DEVICE(0x05ac, 0x8215) },
  92
  93         /* Apple MacBookPro6,2 */
  94         { USB_DEVICE(0x05ac, 0x8218) },
  95
  96         /* Apple MacBookAir3,1, MacBookAir3,2 */
  97         { USB_DEVICE(0x05ac, 0x821b) },
  98
  99         /* Apple MacBookAir4,1 */
 100         { USB_DEVICE(0x05ac, 0x821f) },
 101
 102         /* Apple MacBookPro8,2 */
 103         { USB_DEVICE(0x05ac, 0x821a) },
 104
 105         /* Apple MacMini5,1 */
 106         { USB_DEVICE(0x05ac, 0x8281) },
 107
 108         /* AVM BlueFRITZ! USB v2.0 */
 109         { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE },
 110
 111         /* Bluetooth Ultraport Module from IBM */
 112         { USB_DEVICE(0x04bf, 0x030a) },
 113
 114         /* ALPS Modules with non-standard id */
 115         { USB_DEVICE(0x044e, 0x3001) },
 116         { USB_DEVICE(0x044e, 0x3002) },
 117
 118         /* Ericsson with non-standard id */
 119         { USB_DEVICE(0x0bdb, 0x1002) },
 120
 121         /* Canyon CN-BTU1 with HID interfaces */
 122         { USB_DEVICE(0x0c10, 0x0000) },
 123
 124         /* Broadcom BCM20702A0 */
 125         { USB_DEVICE(0x413c, 0x8197) },
 126
 127         /* Broadcom BCM20702B0 (Dynex/Insignia) */
 128         { USB_DEVICE(0x19ff, 0x0239), .driver_info = BTUSB_BCM_PATCHRAM },
 129
 130         /* Broadcom BCM43142A0 (Foxconn/Lenovo) */
 131         { USB_DEVICE(0x105b, 0xe065), .driver_info = BTUSB_BCM_PATCHRAM },
 132
 133         /* Foxconn - Hon Hai */
 134         { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01),
 135           .driver_info = BTUSB_BCM_PATCHRAM },
 136
 137         /* Lite-On Technology - Broadcom based */
 138         { USB_VENDOR_AND_INTERFACE_INFO(0x04ca, 0xff, 0x01, 0x01),
 139           .driver_info = BTUSB_BCM_PATCHRAM },
 140
 141         /* Broadcom devices with vendor specific id */
 142         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
 143           .driver_info = BTUSB_BCM_PATCHRAM },
 144
 145         /* ASUSTek Computer - Broadcom based */
 146         { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01),
 147           .driver_info = BTUSB_BCM_PATCHRAM },
 148
 149         /* Belkin F8065bf - Broadcom based */
 150         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01),
 151           .driver_info = BTUSB_BCM_PATCHRAM },
 152
 153         /* IMC Networks - Broadcom based */
 154         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01),
 155           .driver_info = BTUSB_BCM_PATCHRAM },
 156
 157         /* Toshiba Corp - Broadcom based */
 158         { USB_VENDOR_AND_INTERFACE_INFO(0x0930, 0xff, 0x01, 0x01),
 159           .driver_info = BTUSB_BCM_PATCHRAM },
 160
 161         /* Intel Bluetooth USB Bootloader (RAM module) */
 162         { USB_DEVICE(0x8087, 0x0a5a),
 163           .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
 164
 165         { }     /* Terminating entry */
 166 };
 167
 168 MODULE_DEVICE_TABLE(usb, btusb_table);
 169
 170 static const struct usb_device_id blacklist_table[] = {
 171         /* CSR BlueCore devices */
 172         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 173
 174         /* Broadcom BCM2033 without firmware */
 175         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 176
 177         /* Broadcom BCM2045 devices */
 178         { USB_DEVICE(0x0a5c, 0x2045), .driver_info = BTUSB_BCM2045 },
 179
 180         /* Atheros 3011 with sflash firmware */
 181         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 182         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 183         { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE },
 184         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 185         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 186         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 187         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 188
 189         /* Atheros AR9285 Malbec with sflash firmware */
 190         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 191
 192         /* Atheros 3012 with sflash firmware */
 193         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 194         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 195         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 196         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 197         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 198         { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
 199         { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
 200         { USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 },
 201         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 202         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 203         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 204         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 205         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 206         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 207         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 208         { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
 209         { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
 210         { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
 211         { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 },
 212         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 213         { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
 214         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 215         { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
 216         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 217         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 218         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 219         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 220         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 221         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
 222         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 223         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 224         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 225         { USB_DEVICE(0x0cf3, 0x817b), .driver_info = BTUSB_ATH3012 },
 226         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 227         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 228         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 229         { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 },
 230         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 231         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 232         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 233         { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 },
 234         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 235         { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
 236         { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
 237         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
 238         { USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 },
 239         { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
 240         { USB_DEVICE(0x13d3, 0x3487), .driver_info = BTUSB_ATH3012 },
 241         { USB_DEVICE(0x13d3, 0x3490), .driver_info = BTUSB_ATH3012 },
 242
 243         /* Atheros AR5BBU12 with sflash firmware */
 244         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 245
 246         /* Atheros AR5BBU12 with sflash firmware */
 247         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 248         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 249
 250         /* QCA ROME chipset */
 251         { USB_DEVICE(0x0cf3, 0xe007), .driver_info = BTUSB_QCA_ROME },
 252         { USB_DEVICE(0x0cf3, 0xe009), .driver_info = BTUSB_QCA_ROME },
 253         { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME },
 254         { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME },
 255         { USB_DEVICE(0x0489, 0xe092), .driver_info = BTUSB_QCA_ROME },
 256         { USB_DEVICE(0x04ca, 0x3011), .driver_info = BTUSB_QCA_ROME },
 257
 258         /* Broadcom BCM2035 */
 259         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 260         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 261         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 262
 263         /* Broadcom BCM2045 */
 264         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 265         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 266
 267         /* IBM/Lenovo ThinkPad with Broadcom chip */
 268         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 269         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 270
 271         /* HP laptop with Broadcom chip */
 272         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 273
 274         /* Dell laptop with Broadcom chip */
 275         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 276
 277         /* Dell Wireless 370 and 410 devices */
 278         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 279         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 280
 281         /* Belkin F8T012 and F8T013 devices */
 282         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 283         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 284
 285         /* Asus WL-BTD202 device */
 286         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 287
 288         /* Kensington Bluetooth USB adapter */
 289         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 290
 291         /* RTX Telecom based adapters with buggy SCO support */
 292         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 293         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 294
 295         /* CONWISE Technology based adapters with buggy SCO support */
 296         { USB_DEVICE(0x0e5e, 0x6622),
 297           .driver_info = BTUSB_BROKEN_ISOC | BTUSB_CW6622},
 298
 299         /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
 300         { USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE },
 301
 302         /* Digianswer devices */
 303         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 304         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 305
 306         /* CSR BlueCore Bluetooth Sniffer */
 307         { USB_DEVICE(0x0a12, 0x0002),
 308           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 309
 310         /* Frontline ComProbe Bluetooth Sniffer */
 311         { USB_DEVICE(0x16d3, 0x0002),
 312           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 313
 314         /* Marvell Bluetooth devices */
 315         { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
 316         { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
 317
 318         /* Intel Bluetooth devices */
 319         { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR },
 320         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 321         { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
 322         { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_NEW },
 323         { USB_DEVICE(0x8087, 0x0aa7), .driver_info = BTUSB_INTEL },
 324
 325         /* Other Intel Bluetooth devices */
 326         { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01),
 327           .driver_info = BTUSB_IGNORE },
 328
 329         /* Realtek Bluetooth devices */
 330         { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01),
 331           .driver_info = BTUSB_REALTEK },
 332
 333         /* Additional Realtek 8723AE Bluetooth devices */
 334         { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK },
 335         { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK },
 336
 337         /* Additional Realtek 8723BE Bluetooth devices */
 338         { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK },
 339         { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK },
 340         { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
 341         { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
 342         { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },
 343
 344         /* Additional Realtek 8821AE Bluetooth devices */
 345         { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
 346         { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },
 347         { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK },
 348         { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK },
 349         { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK },
 350
 351         /* Silicon Wave based devices */
 352         { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE },
 353
 354         { }     /* Terminating entry */
 355 };
 356
 357 #define BTUSB_MAX_ISOC_FRAMES   10
 358
 359 #define BTUSB_INTR_RUNNING      0
 360 #define BTUSB_BULK_RUNNING      1
 361 #define BTUSB_ISOC_RUNNING      2
 362 #define BTUSB_SUSPENDING        3
 363 #define BTUSB_DID_ISO_RESUME    4
 364 #define BTUSB_BOOTLOADER        5
 365 #define BTUSB_DOWNLOADING       6
 366 #define BTUSB_FIRMWARE_LOADED   7
 367 #define BTUSB_FIRMWARE_FAILED   8
 368 #define BTUSB_BOOTING           9
 369 #define BTUSB_RESET_RESUME      10
 370 #define BTUSB_DIAG_RUNNING      11
 371
 372 struct btusb_data {
 373         struct hci_dev       *hdev;
 374         struct usb_device    *udev;
 375         struct usb_interface *intf;
 376         struct usb_interface *isoc;
 377         struct usb_interface *diag;
 378
 379         unsigned long flags;
 380
 381         struct work_struct work;
 382         struct work_struct waker;
 383
 384         struct usb_anchor deferred;
 385         struct usb_anchor tx_anchor;
 386         int tx_in_flight;
 387         spinlock_t txlock;
 388
 389         struct usb_anchor intr_anchor;
 390         struct usb_anchor bulk_anchor;
 391         struct usb_anchor isoc_anchor;
 392         struct usb_anchor diag_anchor;
 393         spinlock_t rxlock;
 394
 395         struct sk_buff *evt_skb;
 396         struct sk_buff *acl_skb;
 397         struct sk_buff *sco_skb;
 398
 399         struct usb_endpoint_descriptor *intr_ep;
 400         struct usb_endpoint_descriptor *bulk_tx_ep;
 401         struct usb_endpoint_descriptor *bulk_rx_ep;
 402         struct usb_endpoint_descriptor *isoc_tx_ep;
 403         struct usb_endpoint_descriptor *isoc_rx_ep;
 404         struct usb_endpoint_descriptor *diag_tx_ep;
 405         struct usb_endpoint_descriptor *diag_rx_ep;
 406
 407         __u8 cmdreq_type;
 408         __u8 cmdreq;
 409
 410         unsigned int sco_num;
 411         int isoc_altsetting;
 412         int suspend_count;
 413
 414         int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
 415         int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
 416
 417         int (*setup_on_usb)(struct hci_dev *hdev);
 418 };
 419
 420 static inline void btusb_free_frags(struct btusb_data *data)
 421 {
 422         unsigned long flags;
 423
 424         spin_lock_irqsave(&data->rxlock, flags);
 425
 426         kfree_skb(data->evt_skb);
 427         data->evt_skb = NULL;
 428
 429         kfree_skb(data->acl_skb);
 430         data->acl_skb = NULL;
 431
 432         kfree_skb(data->sco_skb);
 433         data->sco_skb = NULL;
 434
 435         spin_unlock_irqrestore(&data->rxlock, flags);
 436 }
 437
 438 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
 439 {
 440         struct sk_buff *skb;
 441         int err = 0;
 442
 443         spin_lock(&data->rxlock);
 444         skb = data->evt_skb;
 445
 446         while (count) {
 447                 int len;
 448
 449                 if (!skb) {
 450                         skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
 451                         if (!skb) {
 452                                 err = -ENOMEM;
 453                                 break;
 454                         }
 455
 456                         hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
 457                         hci_skb_expect(skb) = HCI_EVENT_HDR_SIZE;
 458                 }
 459
 460                 len = min_t(uint, hci_skb_expect(skb), count);
 461                 memcpy(skb_put(skb, len), buffer, len);
 462
 463                 count -= len;
 464                 buffer += len;
 465                 hci_skb_expect(skb) -= len;
 466
 467                 if (skb->len == HCI_EVENT_HDR_SIZE) {
 468                         /* Complete event header */
 469                         hci_skb_expect(skb) = hci_event_hdr(skb)->plen;
 470
 471                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 472                                 kfree_skb(skb);
 473                                 skb = NULL;
 474
 475                                 err = -EILSEQ;
 476                                 break;
 477                         }
 478                 }
 479
 480                 if (!hci_skb_expect(skb)) {
 481                         /* Complete frame */
 482                         data->recv_event(data->hdev, skb);
 483                         skb = NULL;
 484                 }
 485         }
 486
 487         data->evt_skb = skb;
 488         spin_unlock(&data->rxlock);
 489
 490         return err;
 491 }
 492
 493 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
 494 {
 495         struct sk_buff *skb;
 496         int err = 0;
 497
 498         spin_lock(&data->rxlock);
 499         skb = data->acl_skb;
 500
 501         while (count) {
 502                 int len;
 503
 504                 if (!skb) {
 505                         skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
 506                         if (!skb) {
 507                                 err = -ENOMEM;
 508                                 break;
 509                         }
 510
 511                         hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT;
 512                         hci_skb_expect(skb) = HCI_ACL_HDR_SIZE;
 513                 }
 514
 515                 len = min_t(uint, hci_skb_expect(skb), count);
 516                 memcpy(skb_put(skb, len), buffer, len);
 517
 518                 count -= len;
 519                 buffer += len;
 520                 hci_skb_expect(skb) -= len;
 521
 522                 if (skb->len == HCI_ACL_HDR_SIZE) {
 523                         __le16 dlen = hci_acl_hdr(skb)->dlen;
 524
 525                         /* Complete ACL header */
 526                         hci_skb_expect(skb) = __le16_to_cpu(dlen);
 527
 528                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 529                                 kfree_skb(skb);
 530                                 skb = NULL;
 531
 532                                 err = -EILSEQ;
 533                                 break;
 534                         }
 535                 }
 536
 537                 if (!hci_skb_expect(skb)) {
 538                         /* Complete frame */
 539                         hci_recv_frame(data->hdev, skb);
 540                         skb = NULL;
 541                 }
 542         }
 543
 544         data->acl_skb = skb;
 545         spin_unlock(&data->rxlock);
 546
 547         return err;
 548 }
 549
 550 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
 551 {
 552         struct sk_buff *skb;
 553         int err = 0;
 554
 555         spin_lock(&data->rxlock);
 556         skb = data->sco_skb;
 557
 558         while (count) {
 559                 int len;
 560
 561                 if (!skb) {
 562                         skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
 563                         if (!skb) {
 564                                 err = -ENOMEM;
 565                                 break;
 566                         }
 567
 568                         hci_skb_pkt_type(skb) = HCI_SCODATA_PKT;
 569                         hci_skb_expect(skb) = HCI_SCO_HDR_SIZE;
 570                 }
 571
 572                 len = min_t(uint, hci_skb_expect(skb), count);
 573                 memcpy(skb_put(skb, len), buffer, len);
 574
 575                 count -= len;
 576                 buffer += len;
 577                 hci_skb_expect(skb) -= len;
 578
 579                 if (skb->len == HCI_SCO_HDR_SIZE) {
 580                         /* Complete SCO header */
 581                         hci_skb_expect(skb) = hci_sco_hdr(skb)->dlen;
 582
 583                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 584                                 kfree_skb(skb);
 585                                 skb = NULL;
 586
 587                                 err = -EILSEQ;
 588                                 break;
 589                         }
 590                 }
 591
 592                 if (!hci_skb_expect(skb)) {
 593                         /* Complete frame */
 594                         hci_recv_frame(data->hdev, skb);
 595                         skb = NULL;
 596                 }
 597         }
 598
 599         data->sco_skb = skb;
 600         spin_unlock(&data->rxlock);
 601
 602         return err;
 603 }
 604
 605 static void btusb_intr_complete(struct urb *urb)
 606 {
 607         struct hci_dev *hdev = urb->context;
 608         struct btusb_data *data = hci_get_drvdata(hdev);
 609         int err;
 610
 611         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 612                urb->actual_length);
 613
 614         if (!test_bit(HCI_RUNNING, &hdev->flags))
 615                 return;
 616
 617         if (urb->status == 0) {
 618                 hdev->stat.byte_rx += urb->actual_length;
 619
 620                 if (btusb_recv_intr(data, urb->transfer_buffer,
 621                                     urb->actual_length) < 0) {
 622                         BT_ERR("%s corrupted event packet", hdev->name);
 623                         hdev->stat.err_rx++;
 624                 }
 625         } else if (urb->status == -ENOENT) {
 626                 /* Avoid suspend failed when usb_kill_urb */
 627                 return;
 628         }
 629
 630         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 631                 return;
 632
 633         usb_mark_last_busy(data->udev);
 634         usb_anchor_urb(urb, &data->intr_anchor);
 635
 636         err = usb_submit_urb(urb, GFP_ATOMIC);
 637         if (err < 0) {
 638                 /* -EPERM: urb is being killed;
 639                  * -ENODEV: device got disconnected */
 640                 if (err != -EPERM && err != -ENODEV)
 641                         BT_ERR("%s urb %p failed to resubmit (%d)",
 642                                hdev->name, urb, -err);
 643                 usb_unanchor_urb(urb);
 644         }
 645 }
 646
 647 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 648 {
 649         struct btusb_data *data = hci_get_drvdata(hdev);
 650         struct urb *urb;
 651         unsigned char *buf;
 652         unsigned int pipe;
 653         int err, size;
 654
 655         BT_DBG("%s", hdev->name);
 656
 657         if (!data->intr_ep)
 658                 return -ENODEV;
 659
 660         urb = usb_alloc_urb(0, mem_flags);
 661         if (!urb)
 662                 return -ENOMEM;
 663
 664         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 665
 666         buf = kmalloc(size, mem_flags);
 667         if (!buf) {
 668                 usb_free_urb(urb);
 669                 return -ENOMEM;
 670         }
 671
 672         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 673
 674         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 675                          btusb_intr_complete, hdev, data->intr_ep->bInterval);
 676
 677         urb->transfer_flags |= URB_FREE_BUFFER;
 678
 679         usb_anchor_urb(urb, &data->intr_anchor);
 680
 681         err = usb_submit_urb(urb, mem_flags);
 682         if (err < 0) {
 683                 if (err != -EPERM && err != -ENODEV)
 684                         BT_ERR("%s urb %p submission failed (%d)",
 685                                hdev->name, urb, -err);
 686                 usb_unanchor_urb(urb);
 687         }
 688
 689         usb_free_urb(urb);
 690
 691         return err;
 692 }
 693
 694 static void btusb_bulk_complete(struct urb *urb)
 695 {
 696         struct hci_dev *hdev = urb->context;
 697         struct btusb_data *data = hci_get_drvdata(hdev);
 698         int err;
 699
 700         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 701                urb->actual_length);
 702
 703         if (!test_bit(HCI_RUNNING, &hdev->flags))
 704                 return;
 705
 706         if (urb->status == 0) {
 707                 hdev->stat.byte_rx += urb->actual_length;
 708
 709                 if (data->recv_bulk(data, urb->transfer_buffer,
 710                                     urb->actual_length) < 0) {
 711                         BT_ERR("%s corrupted ACL packet", hdev->name);
 712                         hdev->stat.err_rx++;
 713                 }
 714         } else if (urb->status == -ENOENT) {
 715                 /* Avoid suspend failed when usb_kill_urb */
 716                 return;
 717         }
 718
 719         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 720                 return;
 721
 722         usb_anchor_urb(urb, &data->bulk_anchor);
 723         usb_mark_last_busy(data->udev);
 724
 725         err = usb_submit_urb(urb, GFP_ATOMIC);
 726         if (err < 0) {
 727                 /* -EPERM: urb is being killed;
 728                  * -ENODEV: device got disconnected */
 729                 if (err != -EPERM && err != -ENODEV)
 730                         BT_ERR("%s urb %p failed to resubmit (%d)",
 731                                hdev->name, urb, -err);
 732                 usb_unanchor_urb(urb);
 733         }
 734 }
 735
 736 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 737 {
 738         struct btusb_data *data = hci_get_drvdata(hdev);
 739         struct urb *urb;
 740         unsigned char *buf;
 741         unsigned int pipe;
 742         int err, size = HCI_MAX_FRAME_SIZE;
 743
 744         BT_DBG("%s", hdev->name);
 745
 746         if (!data->bulk_rx_ep)
 747                 return -ENODEV;
 748
 749         urb = usb_alloc_urb(0, mem_flags);
 750         if (!urb)
 751                 return -ENOMEM;
 752
 753         buf = kmalloc(size, mem_flags);
 754         if (!buf) {
 755                 usb_free_urb(urb);
 756                 return -ENOMEM;
 757         }
 758
 759         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 760
 761         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
 762                           btusb_bulk_complete, hdev);
 763
 764         urb->transfer_flags |= URB_FREE_BUFFER;
 765
 766         usb_mark_last_busy(data->udev);
 767         usb_anchor_urb(urb, &data->bulk_anchor);
 768
 769         err = usb_submit_urb(urb, mem_flags);
 770         if (err < 0) {
 771                 if (err != -EPERM && err != -ENODEV)
 772                         BT_ERR("%s urb %p submission failed (%d)",
 773                                hdev->name, urb, -err);
 774                 usb_unanchor_urb(urb);
 775         }
 776
 777         usb_free_urb(urb);
 778
 779         return err;
 780 }
 781
 782 static void btusb_isoc_complete(struct urb *urb)
 783 {
 784         struct hci_dev *hdev = urb->context;
 785         struct btusb_data *data = hci_get_drvdata(hdev);
 786         int i, err;
 787
 788         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 789                urb->actual_length);
 790
 791         if (!test_bit(HCI_RUNNING, &hdev->flags))
 792                 return;
 793
 794         if (urb->status == 0) {
 795                 for (i = 0; i < urb->number_of_packets; i++) {
 796                         unsigned int offset = urb->iso_frame_desc[i].offset;
 797                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 798
 799                         if (urb->iso_frame_desc[i].status)
 800                                 continue;
 801
 802                         hdev->stat.byte_rx += length;
 803
 804                         if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
 805                                             length) < 0) {
 806                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 807                                 hdev->stat.err_rx++;
 808                         }
 809                 }
 810         } else if (urb->status == -ENOENT) {
 811                 /* Avoid suspend failed when usb_kill_urb */
 812                 return;
 813         }
 814
 815         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 816                 return;
 817
 818         usb_anchor_urb(urb, &data->isoc_anchor);
 819
 820         err = usb_submit_urb(urb, GFP_ATOMIC);
 821         if (err < 0) {
 822                 /* -EPERM: urb is being killed;
 823                  * -ENODEV: device got disconnected */
 824                 if (err != -EPERM && err != -ENODEV)
 825                         BT_ERR("%s urb %p failed to resubmit (%d)",
 826                                hdev->name, urb, -err);
 827                 usb_unanchor_urb(urb);
 828         }
 829 }
 830
 831 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 832 {
 833         int i, offset = 0;
 834
 835         BT_DBG("len %d mtu %d", len, mtu);
 836
 837         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 838                                         i++, offset += mtu, len -= mtu) {
 839                 urb->iso_frame_desc[i].offset = offset;
 840                 urb->iso_frame_desc[i].length = mtu;
 841         }
 842
 843         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 844                 urb->iso_frame_desc[i].offset = offset;
 845                 urb->iso_frame_desc[i].length = len;
 846                 i++;
 847         }
 848
 849         urb->number_of_packets = i;
 850 }
 851
 852 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 853 {
 854         struct btusb_data *data = hci_get_drvdata(hdev);
 855         struct urb *urb;
 856         unsigned char *buf;
 857         unsigned int pipe;
 858         int err, size;
 859
 860         BT_DBG("%s", hdev->name);
 861
 862         if (!data->isoc_rx_ep)
 863                 return -ENODEV;
 864
 865         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 866         if (!urb)
 867                 return -ENOMEM;
 868
 869         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 870                                                 BTUSB_MAX_ISOC_FRAMES;
 871
 872         buf = kmalloc(size, mem_flags);
 873         if (!buf) {
 874                 usb_free_urb(urb);
 875                 return -ENOMEM;
 876         }
 877
 878         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 879
 880         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 881                          hdev, data->isoc_rx_ep->bInterval);
 882
 883         urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
 884
 885         __fill_isoc_descriptor(urb, size,
 886                                le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 887
 888         usb_anchor_urb(urb, &data->isoc_anchor);
 889
 890         err = usb_submit_urb(urb, mem_flags);
 891         if (err < 0) {
 892                 if (err != -EPERM && err != -ENODEV)
 893                         BT_ERR("%s urb %p submission failed (%d)",
 894                                hdev->name, urb, -err);
 895                 usb_unanchor_urb(urb);
 896         }
 897
 898         usb_free_urb(urb);
 899
 900         return err;
 901 }
 902
 903 static void btusb_diag_complete(struct urb *urb)
 904 {
 905         struct hci_dev *hdev = urb->context;
 906         struct btusb_data *data = hci_get_drvdata(hdev);
 907         int err;
 908
 909         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 910                urb->actual_length);
 911
 912         if (urb->status == 0) {
 913                 struct sk_buff *skb;
 914
 915                 skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC);
 916                 if (skb) {
 917                         memcpy(skb_put(skb, urb->actual_length),
 918                                urb->transfer_buffer, urb->actual_length);
 919                         hci_recv_diag(hdev, skb);
 920                 }
 921         } else if (urb->status == -ENOENT) {
 922                 /* Avoid suspend failed when usb_kill_urb */
 923                 return;
 924         }
 925
 926         if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags))
 927                 return;
 928
 929         usb_anchor_urb(urb, &data->diag_anchor);
 930         usb_mark_last_busy(data->udev);
 931
 932         err = usb_submit_urb(urb, GFP_ATOMIC);
 933         if (err < 0) {
 934                 /* -EPERM: urb is being killed;
 935                  * -ENODEV: device got disconnected */
 936                 if (err != -EPERM && err != -ENODEV)
 937                         BT_ERR("%s urb %p failed to resubmit (%d)",
 938                                hdev->name, urb, -err);
 939                 usb_unanchor_urb(urb);
 940         }
 941 }
 942
 943 static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags)
 944 {
 945         struct btusb_data *data = hci_get_drvdata(hdev);
 946         struct urb *urb;
 947         unsigned char *buf;
 948         unsigned int pipe;
 949         int err, size = HCI_MAX_FRAME_SIZE;
 950
 951         BT_DBG("%s", hdev->name);
 952
 953         if (!data->diag_rx_ep)
 954                 return -ENODEV;
 955
 956         urb = usb_alloc_urb(0, mem_flags);
 957         if (!urb)
 958                 return -ENOMEM;
 959
 960         buf = kmalloc(size, mem_flags);
 961         if (!buf) {
 962                 usb_free_urb(urb);
 963                 return -ENOMEM;
 964         }
 965
 966         pipe = usb_rcvbulkpipe(data->udev, data->diag_rx_ep->bEndpointAddress);
 967
 968         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
 969                           btusb_diag_complete, hdev);
 970
 971         urb->transfer_flags |= URB_FREE_BUFFER;
 972
 973         usb_mark_last_busy(data->udev);
 974         usb_anchor_urb(urb, &data->diag_anchor);
 975
 976         err = usb_submit_urb(urb, mem_flags);
 977         if (err < 0) {
 978                 if (err != -EPERM && err != -ENODEV)
 979                         BT_ERR("%s urb %p submission failed (%d)",
 980                                hdev->name, urb, -err);
 981                 usb_unanchor_urb(urb);
 982         }
 983
 984         usb_free_urb(urb);
 985
 986         return err;
 987 }
 988
 989 static void btusb_tx_complete(struct urb *urb)
 990 {
 991         struct sk_buff *skb = urb->context;
 992         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
 993         struct btusb_data *data = hci_get_drvdata(hdev);
 994
 995         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 996                urb->actual_length);
 997
 998         if (!test_bit(HCI_RUNNING, &hdev->flags))
 999                 goto done;
1000
1001         if (!urb->status)
1002                 hdev->stat.byte_tx += urb->transfer_buffer_length;
1003         else
1004                 hdev->stat.err_tx++;
1005
1006 done:
1007         spin_lock(&data->txlock);
1008         data->tx_in_flight--;
1009         spin_unlock(&data->txlock);
1010
1011         kfree(urb->setup_packet);
1012
1013         kfree_skb(skb);
1014 }
1015
1016 static void btusb_isoc_tx_complete(struct urb *urb)
1017 {
1018         struct sk_buff *skb = urb->context;
1019         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1020
1021         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1022                urb->actual_length);
1023
1024         if (!test_bit(HCI_RUNNING, &hdev->flags))
1025                 goto done;
1026
1027         if (!urb->status)
1028                 hdev->stat.byte_tx += urb->transfer_buffer_length;
1029         else
1030                 hdev->stat.err_tx++;
1031
1032 done:
1033         kfree(urb->setup_packet);
1034
1035         kfree_skb(skb);
1036 }
1037
1038 static int btusb_open(struct hci_dev *hdev)
1039 {
1040         struct btusb_data *data = hci_get_drvdata(hdev);
1041         int err;
1042
1043         BT_DBG("%s", hdev->name);
1044
1045         /* Patching USB firmware files prior to starting any URBs of HCI path
1046          * It is more safe to use USB bulk channel for downloading USB patch
1047          */
1048         if (data->setup_on_usb) {
1049                 err = data->setup_on_usb(hdev);
1050                 if (err < 0)
1051                         return err;
1052         }
1053
1054         err = usb_autopm_get_interface(data->intf);
1055         if (err < 0)
1056                 return err;
1057
1058         data->intf->needs_remote_wakeup = 1;
1059
1060         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
1061                 goto done;
1062
1063         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
1064         if (err < 0)
1065                 goto failed;
1066
1067         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1068         if (err < 0) {
1069                 usb_kill_anchored_urbs(&data->intr_anchor);
1070                 goto failed;
1071         }
1072
1073         set_bit(BTUSB_BULK_RUNNING, &data->flags);
1074         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1075
1076         if (data->diag) {
1077                 if (!btusb_submit_diag_urb(hdev, GFP_KERNEL))
1078                         set_bit(BTUSB_DIAG_RUNNING, &data->flags);
1079         }
1080
1081 done:
1082         usb_autopm_put_interface(data->intf);
1083         return 0;
1084
1085 failed:
1086         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1087         usb_autopm_put_interface(data->intf);
1088         return err;
1089 }
1090
1091 static void btusb_stop_traffic(struct btusb_data *data)
1092 {
1093         usb_kill_anchored_urbs(&data->intr_anchor);
1094         usb_kill_anchored_urbs(&data->bulk_anchor);
1095         usb_kill_anchored_urbs(&data->isoc_anchor);
1096         usb_kill_anchored_urbs(&data->diag_anchor);
1097 }
1098
1099 static int btusb_close(struct hci_dev *hdev)
1100 {
1101         struct btusb_data *data = hci_get_drvdata(hdev);
1102         int err;
1103
1104         BT_DBG("%s", hdev->name);
1105
1106         cancel_work_sync(&data->work);
1107         cancel_work_sync(&data->waker);
1108
1109         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1110         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1111         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1112         clear_bit(BTUSB_DIAG_RUNNING, &data->flags);
1113
1114         btusb_stop_traffic(data);
1115         btusb_free_frags(data);
1116
1117         err = usb_autopm_get_interface(data->intf);
1118         if (err < 0)
1119                 goto failed;
1120
1121         data->intf->needs_remote_wakeup = 0;
1122         usb_autopm_put_interface(data->intf);
1123
1124 failed:
1125         usb_scuttle_anchored_urbs(&data->deferred);
1126         return 0;
1127 }
1128
1129 static int btusb_flush(struct hci_dev *hdev)
1130 {
1131         struct btusb_data *data = hci_get_drvdata(hdev);
1132
1133         BT_DBG("%s", hdev->name);
1134
1135         usb_kill_anchored_urbs(&data->tx_anchor);
1136         btusb_free_frags(data);
1137
1138         return 0;
1139 }
1140
1141 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
1142 {
1143         struct btusb_data *data = hci_get_drvdata(hdev);
1144         struct usb_ctrlrequest *dr;
1145         struct urb *urb;
1146         unsigned int pipe;
1147
1148         urb = usb_alloc_urb(0, GFP_KERNEL);
1149         if (!urb)
1150                 return ERR_PTR(-ENOMEM);
1151
1152         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
1153         if (!dr) {
1154                 usb_free_urb(urb);
1155                 return ERR_PTR(-ENOMEM);
1156         }
1157
1158         dr->bRequestType = data->cmdreq_type;
1159         dr->bRequest     = data->cmdreq;
1160         dr->wIndex       = 0;
1161         dr->wValue       = 0;
1162         dr->wLength      = __cpu_to_le16(skb->len);
1163
1164         pipe = usb_sndctrlpipe(data->udev, 0x00);
1165
1166         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
1167                              skb->data, skb->len, btusb_tx_complete, skb);
1168
1169         skb->dev = (void *)hdev;
1170
1171         return urb;
1172 }
1173
1174 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
1175 {
1176         struct btusb_data *data = hci_get_drvdata(hdev);
1177         struct urb *urb;
1178         unsigned int pipe;
1179
1180         if (!data->bulk_tx_ep)
1181                 return ERR_PTR(-ENODEV);
1182
1183         urb = usb_alloc_urb(0, GFP_KERNEL);
1184         if (!urb)
1185                 return ERR_PTR(-ENOMEM);
1186
1187         pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1188
1189         usb_fill_bulk_urb(urb, data->udev, pipe,
1190                           skb->data, skb->len, btusb_tx_complete, skb);
1191
1192         skb->dev = (void *)hdev;
1193
1194         return urb;
1195 }
1196
1197 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1198 {
1199         struct btusb_data *data = hci_get_drvdata(hdev);
1200         struct urb *urb;
1201         unsigned int pipe;
1202
1203         if (!data->isoc_tx_ep)
1204                 return ERR_PTR(-ENODEV);
1205
1206         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1207         if (!urb)
1208                 return ERR_PTR(-ENOMEM);
1209
1210         pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1211
1212         usb_fill_int_urb(urb, data->udev, pipe,
1213                          skb->data, skb->len, btusb_isoc_tx_complete,
1214                          skb, data->isoc_tx_ep->bInterval);
1215
1216         urb->transfer_flags  = URB_ISO_ASAP;
1217
1218         __fill_isoc_descriptor(urb, skb->len,
1219                                le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1220
1221         skb->dev = (void *)hdev;
1222
1223         return urb;
1224 }
1225
1226 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1227 {
1228         struct btusb_data *data = hci_get_drvdata(hdev);
1229         int err;
1230
1231         usb_anchor_urb(urb, &data->tx_anchor);
1232
1233         err = usb_submit_urb(urb, GFP_KERNEL);
1234         if (err < 0) {
1235                 if (err != -EPERM && err != -ENODEV)
1236                         BT_ERR("%s urb %p submission failed (%d)",
1237                                hdev->name, urb, -err);
1238                 kfree(urb->setup_packet);
1239                 usb_unanchor_urb(urb);
1240         } else {
1241                 usb_mark_last_busy(data->udev);
1242         }
1243
1244         usb_free_urb(urb);
1245         return err;
1246 }
1247
1248 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1249 {
1250         struct btusb_data *data = hci_get_drvdata(hdev);
1251         unsigned long flags;
1252         bool suspending;
1253
1254         spin_lock_irqsave(&data->txlock, flags);
1255         suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1256         if (!suspending)
1257                 data->tx_in_flight++;
1258         spin_unlock_irqrestore(&data->txlock, flags);
1259
1260         if (!suspending)
1261                 return submit_tx_urb(hdev, urb);
1262
1263         usb_anchor_urb(urb, &data->deferred);
1264         schedule_work(&data->waker);
1265
1266         usb_free_urb(urb);
1267         return 0;
1268 }
1269
1270 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1271 {
1272         struct urb *urb;
1273
1274         BT_DBG("%s", hdev->name);
1275
1276         switch (hci_skb_pkt_type(skb)) {
1277         case HCI_COMMAND_PKT:
1278                 urb = alloc_ctrl_urb(hdev, skb);
1279                 if (IS_ERR(urb))
1280                         return PTR_ERR(urb);
1281
1282                 hdev->stat.cmd_tx++;
1283                 return submit_or_queue_tx_urb(hdev, urb);
1284
1285         case HCI_ACLDATA_PKT:
1286                 urb = alloc_bulk_urb(hdev, skb);
1287                 if (IS_ERR(urb))
1288                         return PTR_ERR(urb);
1289
1290                 hdev->stat.acl_tx++;
1291                 return submit_or_queue_tx_urb(hdev, urb);
1292
1293         case HCI_SCODATA_PKT:
1294                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1295                         return -ENODEV;
1296
1297                 urb = alloc_isoc_urb(hdev, skb);
1298                 if (IS_ERR(urb))
1299                         return PTR_ERR(urb);
1300
1301                 hdev->stat.sco_tx++;
1302                 return submit_tx_urb(hdev, urb);
1303         }
1304
1305         return -EILSEQ;
1306 }
1307
1308 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1309 {
1310         struct btusb_data *data = hci_get_drvdata(hdev);
1311
1312         BT_DBG("%s evt %d", hdev->name, evt);
1313
1314         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1315                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1316                 schedule_work(&data->work);
1317         }
1318 }
1319
1320 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1321 {
1322         struct btusb_data *data = hci_get_drvdata(hdev);
1323         struct usb_interface *intf = data->isoc;
1324         struct usb_endpoint_descriptor *ep_desc;
1325         int i, err;
1326
1327         if (!data->isoc)
1328                 return -ENODEV;
1329
1330         err = usb_set_interface(data->udev, 1, altsetting);
1331         if (err < 0) {
1332                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
1333                 return err;
1334         }
1335
1336         data->isoc_altsetting = altsetting;
1337
1338         data->isoc_tx_ep = NULL;
1339         data->isoc_rx_ep = NULL;
1340
1341         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1342                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1343
1344                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1345                         data->isoc_tx_ep = ep_desc;
1346                         continue;
1347                 }
1348
1349                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1350                         data->isoc_rx_ep = ep_desc;
1351                         continue;
1352                 }
1353         }
1354
1355         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1356                 BT_ERR("%s invalid SCO descriptors", hdev->name);
1357                 return -ENODEV;
1358         }
1359
1360         return 0;
1361 }
1362
1363 static void btusb_work(struct work_struct *work)
1364 {
1365         struct btusb_data *data = container_of(work, struct btusb_data, work);
1366         struct hci_dev *hdev = data->hdev;
1367         int new_alts;
1368         int err;
1369
1370         if (data->sco_num > 0) {
1371                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1372                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1373                         if (err < 0) {
1374                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1375                                 usb_kill_anchored_urbs(&data->isoc_anchor);
1376                                 return;
1377                         }
1378
1379                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1380                 }
1381
1382                 if (hdev->voice_setting & 0x0020) {
1383                         static const int alts[3] = { 2, 4, 5 };
1384
1385                         new_alts = alts[data->sco_num - 1];
1386                 } else {
1387                         new_alts = data->sco_num;
1388                 }
1389
1390                 if (data->isoc_altsetting != new_alts) {
1391                         unsigned long flags;
1392
1393                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1394                         usb_kill_anchored_urbs(&data->isoc_anchor);
1395
1396                         /* When isochronous alternate setting needs to be
1397                          * changed, because SCO connection has been added
1398                          * or removed, a packet fragment may be left in the
1399                          * reassembling state. This could lead to wrongly
1400                          * assembled fragments.
1401                          *
1402                          * Clear outstanding fragment when selecting a new
1403                          * alternate setting.
1404                          */
1405                         spin_lock_irqsave(&data->rxlock, flags);
1406                         kfree_skb(data->sco_skb);
1407                         data->sco_skb = NULL;
1408                         spin_unlock_irqrestore(&data->rxlock, flags);
1409
1410                         if (__set_isoc_interface(hdev, new_alts) < 0)
1411                                 return;
1412                 }
1413
1414                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1415                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1416                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1417                         else
1418                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1419                 }
1420         } else {
1421                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1422                 usb_kill_anchored_urbs(&data->isoc_anchor);
1423
1424                 __set_isoc_interface(hdev, 0);
1425                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1426                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1427         }
1428 }
1429
1430 static void btusb_waker(struct work_struct *work)
1431 {
1432         struct btusb_data *data = container_of(work, struct btusb_data, waker);
1433         int err;
1434
1435         err = usb_autopm_get_interface(data->intf);
1436         if (err < 0)
1437                 return;
1438
1439         usb_autopm_put_interface(data->intf);
1440 }
1441
1442 static int btusb_setup_bcm92035(struct hci_dev *hdev)
1443 {
1444         struct sk_buff *skb;
1445         u8 val = 0x00;
1446
1447         BT_DBG("%s", hdev->name);
1448
1449         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1450         if (IS_ERR(skb))
1451                 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
1452         else
1453                 kfree_skb(skb);
1454
1455         return 0;
1456 }
1457
1458 static int btusb_setup_csr(struct hci_dev *hdev)
1459 {
1460         struct hci_rp_read_local_version *rp;
1461         struct sk_buff *skb;
1462
1463         BT_DBG("%s", hdev->name);
1464
1465         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1466                              HCI_INIT_TIMEOUT);
1467         if (IS_ERR(skb)) {
1468                 int err = PTR_ERR(skb);
1469                 BT_ERR("%s: CSR: Local version failed (%d)", hdev->name, err);
1470                 return err;
1471         }
1472
1473         if (skb->len != sizeof(struct hci_rp_read_local_version)) {
1474                 BT_ERR("%s: CSR: Local version length mismatch", hdev->name);
1475                 kfree_skb(skb);
1476                 return -EIO;
1477         }
1478
1479         rp = (struct hci_rp_read_local_version *)skb->data;
1480
1481         /* Detect controllers which aren't real CSR ones. */
1482         if (le16_to_cpu(rp->manufacturer) != 10 ||
1483             le16_to_cpu(rp->lmp_subver) == 0x0c5c) {
1484                 /* Clear the reset quirk since this is not an actual
1485                  * early Bluetooth 1.1 device from CSR.
1486                  */
1487                 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1488
1489                 /* These fake CSR controllers have all a broken
1490                  * stored link key handling and so just disable it.
1491                  */
1492                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
1493         }
1494
1495         kfree_skb(skb);
1496
1497         return 0;
1498 }
1499
1500 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1501                                                        struct intel_version *ver)
1502 {
1503         const struct firmware *fw;
1504         char fwname[64];
1505         int ret;
1506
1507         snprintf(fwname, sizeof(fwname),
1508                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1509                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
1510                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1511                  ver->fw_build_ww, ver->fw_build_yy);
1512
1513         ret = request_firmware(&fw, fwname, &hdev->dev);
1514         if (ret < 0) {
1515                 if (ret == -EINVAL) {
1516                         BT_ERR("%s Intel firmware file request failed (%d)",
1517                                hdev->name, ret);
1518                         return NULL;
1519                 }
1520
1521                 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1522                        hdev->name, fwname, ret);
1523
1524                 /* If the correct firmware patch file is not found, use the
1525                  * default firmware patch file instead
1526                  */
1527                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1528                          ver->hw_platform, ver->hw_variant);
1529                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1530                         BT_ERR("%s failed to open default Intel fw file: %s",
1531                                hdev->name, fwname);
1532                         return NULL;
1533                 }
1534         }
1535
1536         BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1537
1538         return fw;
1539 }
1540
1541 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1542                                       const struct firmware *fw,
1543                                       const u8 **fw_ptr, int *disable_patch)
1544 {
1545         struct sk_buff *skb;
1546         struct hci_command_hdr *cmd;
1547         const u8 *cmd_param;
1548         struct hci_event_hdr *evt = NULL;
1549         const u8 *evt_param = NULL;
1550         int remain = fw->size - (*fw_ptr - fw->data);
1551
1552         /* The first byte indicates the types of the patch command or event.
1553          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1554          * in the current firmware buffer doesn't start with 0x01 or
1555          * the size of remain buffer is smaller than HCI command header,
1556          * the firmware file is corrupted and it should stop the patching
1557          * process.
1558          */
1559         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1560                 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1561                 return -EINVAL;
1562         }
1563         (*fw_ptr)++;
1564         remain--;
1565
1566         cmd = (struct hci_command_hdr *)(*fw_ptr);
1567         *fw_ptr += sizeof(*cmd);
1568         remain -= sizeof(*cmd);
1569
1570         /* Ensure that the remain firmware data is long enough than the length
1571          * of command parameter. If not, the firmware file is corrupted.
1572          */
1573         if (remain < cmd->plen) {
1574                 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1575                 return -EFAULT;
1576         }
1577
1578         /* If there is a command that loads a patch in the firmware
1579          * file, then enable the patch upon success, otherwise just
1580          * disable the manufacturer mode, for example patch activation
1581          * is not required when the default firmware patch file is used
1582          * because there are no patch data to load.
1583          */
1584         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1585                 *disable_patch = 0;
1586
1587         cmd_param = *fw_ptr;
1588         *fw_ptr += cmd->plen;
1589         remain -= cmd->plen;
1590
1591         /* This reads the expected events when the above command is sent to the
1592          * device. Some vendor commands expects more than one events, for
1593          * example command status event followed by vendor specific event.
1594          * For this case, it only keeps the last expected event. so the command
1595          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1596          * last expected event.
1597          */
1598         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1599                 (*fw_ptr)++;
1600                 remain--;
1601
1602                 evt = (struct hci_event_hdr *)(*fw_ptr);
1603                 *fw_ptr += sizeof(*evt);
1604                 remain -= sizeof(*evt);
1605
1606                 if (remain < evt->plen) {
1607                         BT_ERR("%s Intel fw corrupted: invalid evt len",
1608                                hdev->name);
1609                         return -EFAULT;
1610                 }
1611
1612                 evt_param = *fw_ptr;
1613                 *fw_ptr += evt->plen;
1614                 remain -= evt->plen;
1615         }
1616
1617         /* Every HCI commands in the firmware file has its correspond event.
1618          * If event is not found or remain is smaller than zero, the firmware
1619          * file is corrupted.
1620          */
1621         if (!evt || !evt_param || remain < 0) {
1622                 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1623                 return -EFAULT;
1624         }
1625
1626         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1627                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1628         if (IS_ERR(skb)) {
1629                 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1630                        hdev->name, cmd->opcode, PTR_ERR(skb));
1631                 return PTR_ERR(skb);
1632         }
1633
1634         /* It ensures that the returned event matches the event data read from
1635          * the firmware file. At fist, it checks the length and then
1636          * the contents of the event.
1637          */
1638         if (skb->len != evt->plen) {
1639                 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1640                        le16_to_cpu(cmd->opcode));
1641                 kfree_skb(skb);
1642                 return -EFAULT;
1643         }
1644
1645         if (memcmp(skb->data, evt_param, evt->plen)) {
1646                 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1647                        hdev->name, le16_to_cpu(cmd->opcode));
1648                 kfree_skb(skb);
1649                 return -EFAULT;
1650         }
1651         kfree_skb(skb);
1652
1653         return 0;
1654 }
1655
1656 static int btusb_setup_intel(struct hci_dev *hdev)
1657 {
1658         struct sk_buff *skb;
1659         const struct firmware *fw;
1660         const u8 *fw_ptr;
1661         int disable_patch, err;
1662         struct intel_version ver;
1663
1664         BT_DBG("%s", hdev->name);
1665
1666         /* The controller has a bug with the first HCI command sent to it
1667          * returning number of completed commands as zero. This would stall the
1668          * command processing in the Bluetooth core.
1669          *
1670          * As a workaround, send HCI Reset command first which will reset the
1671          * number of completed commands and allow normal command processing
1672          * from now on.
1673          */
1674         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1675         if (IS_ERR(skb)) {
1676                 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1677                        hdev->name, PTR_ERR(skb));
1678                 return PTR_ERR(skb);
1679         }
1680         kfree_skb(skb);
1681
1682         /* Read Intel specific controller version first to allow selection of
1683          * which firmware file to load.
1684          *
1685          * The returned information are hardware variant and revision plus
1686          * firmware variant, revision and build number.
1687          */
1688         err = btintel_read_version(hdev, &ver);
1689         if (err)
1690                 return err;
1691
1692         BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1693                 hdev->name, ver.hw_platform, ver.hw_variant, ver.hw_revision,
1694                 ver.fw_variant,  ver.fw_revision, ver.fw_build_num,
1695                 ver.fw_build_ww, ver.fw_build_yy, ver.fw_patch_num);
1696
1697         /* fw_patch_num indicates the version of patch the device currently
1698          * have. If there is no patch data in the device, it is always 0x00.
1699          * So, if it is other than 0x00, no need to patch the device again.
1700          */
1701         if (ver.fw_patch_num) {
1702                 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1703                         hdev->name, ver.fw_patch_num);
1704                 goto complete;
1705         }
1706
1707         /* Opens the firmware patch file based on the firmware version read
1708          * from the controller. If it fails to open the matching firmware
1709          * patch file, it tries to open the default firmware patch file.
1710          * If no patch file is found, allow the device to operate without
1711          * a patch.
1712          */
1713         fw = btusb_setup_intel_get_fw(hdev, &ver);
1714         if (!fw)
1715                 goto complete;
1716         fw_ptr = fw->data;
1717
1718         /* Enable the manufacturer mode of the controller.
1719          * Only while this mode is enabled, the driver can download the
1720          * firmware patch data and configuration parameters.
1721          */
1722         err = btintel_enter_mfg(hdev);
1723         if (err) {
1724                 release_firmware(fw);
1725                 return err;
1726         }
1727
1728         disable_patch = 1;
1729
1730         /* The firmware data file consists of list of Intel specific HCI
1731          * commands and its expected events. The first byte indicates the
1732          * type of the message, either HCI command or HCI event.
1733          *
1734          * It reads the command and its expected event from the firmware file,
1735          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1736          * the returned event is compared with the event read from the firmware
1737          * file and it will continue until all the messages are downloaded to
1738          * the controller.
1739          *
1740          * Once the firmware patching is completed successfully,
1741          * the manufacturer mode is disabled with reset and activating the
1742          * downloaded patch.
1743          *
1744          * If the firmware patching fails, the manufacturer mode is
1745          * disabled with reset and deactivating the patch.
1746          *
1747          * If the default patch file is used, no reset is done when disabling
1748          * the manufacturer.
1749          */
1750         while (fw->size > fw_ptr - fw->data) {
1751                 int ret;
1752
1753                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1754                                                  &disable_patch);
1755                 if (ret < 0)
1756                         goto exit_mfg_deactivate;
1757         }
1758
1759         release_firmware(fw);
1760
1761         if (disable_patch)
1762                 goto exit_mfg_disable;
1763
1764         /* Patching completed successfully and disable the manufacturer mode
1765          * with reset and activate the downloaded firmware patches.
1766          */
1767         err = btintel_exit_mfg(hdev, true, true);
1768         if (err)
1769                 return err;
1770
1771         BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1772                 hdev->name);
1773
1774         goto complete;
1775
1776 exit_mfg_disable:
1777         /* Disable the manufacturer mode without reset */
1778         err = btintel_exit_mfg(hdev, false, false);
1779         if (err)
1780                 return err;
1781
1782         BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1783
1784         goto complete;
1785
1786 exit_mfg_deactivate:
1787         release_firmware(fw);
1788
1789         /* Patching failed. Disable the manufacturer mode with reset and
1790          * deactivate the downloaded firmware patches.
1791          */
1792         err = btintel_exit_mfg(hdev, true, false);
1793         if (err)
1794                 return err;
1795
1796         BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1797                 hdev->name);
1798
1799 complete:
1800         /* Set the event mask for Intel specific vendor events. This enables
1801          * a few extra events that are useful during general operation.
1802          */
1803         btintel_set_event_mask_mfg(hdev, false);
1804
1805         btintel_check_bdaddr(hdev);
1806         return 0;
1807 }
1808
1809 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
1810 {
1811         struct sk_buff *skb;
1812         struct hci_event_hdr *hdr;
1813         struct hci_ev_cmd_complete *evt;
1814
1815         skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_ATOMIC);
1816         if (!skb)
1817                 return -ENOMEM;
1818
1819         hdr = (struct hci_event_hdr *)skb_put(skb, sizeof(*hdr));
1820         hdr->evt = HCI_EV_CMD_COMPLETE;
1821         hdr->plen = sizeof(*evt) + 1;
1822
1823         evt = (struct hci_ev_cmd_complete *)skb_put(skb, sizeof(*evt));
1824         evt->ncmd = 0x01;
1825         evt->opcode = cpu_to_le16(opcode);
1826
1827         *skb_put(skb, 1) = 0x00;
1828
1829         hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
1830
1831         return hci_recv_frame(hdev, skb);
1832 }
1833
1834 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
1835                                  int count)
1836 {
1837         /* When the device is in bootloader mode, then it can send
1838          * events via the bulk endpoint. These events are treated the
1839          * same way as the ones received from the interrupt endpoint.
1840          */
1841         if (test_bit(BTUSB_BOOTLOADER, &data->flags))
1842                 return btusb_recv_intr(data, buffer, count);
1843
1844         return btusb_recv_bulk(data, buffer, count);
1845 }
1846
1847 static void btusb_intel_bootup(struct btusb_data *data, const void *ptr,
1848                                unsigned int len)
1849 {
1850         const struct intel_bootup *evt = ptr;
1851
1852         if (len != sizeof(*evt))
1853                 return;
1854
1855         if (test_and_clear_bit(BTUSB_BOOTING, &data->flags)) {
1856                 smp_mb__after_atomic();
1857                 wake_up_bit(&data->flags, BTUSB_BOOTING);
1858         }
1859 }
1860
1861 static void btusb_intel_secure_send_result(struct btusb_data *data,
1862                                            const void *ptr, unsigned int len)
1863 {
1864         const struct intel_secure_send_result *evt = ptr;
1865
1866         if (len != sizeof(*evt))
1867                 return;
1868
1869         if (evt->result)
1870                 set_bit(BTUSB_FIRMWARE_FAILED, &data->flags);
1871
1872         if (test_and_clear_bit(BTUSB_DOWNLOADING, &data->flags) &&
1873             test_bit(BTUSB_FIRMWARE_LOADED, &data->flags)) {
1874                 smp_mb__after_atomic();
1875                 wake_up_bit(&data->flags, BTUSB_DOWNLOADING);
1876         }
1877 }
1878
1879 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
1880 {
1881         struct btusb_data *data = hci_get_drvdata(hdev);
1882
1883         if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1884                 struct hci_event_hdr *hdr = (void *)skb->data;
1885
1886                 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
1887                     hdr->plen > 0) {
1888                         const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
1889                         unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
1890
1891                         switch (skb->data[2]) {
1892                         case 0x02:
1893                                 /* When switching to the operational firmware
1894                                  * the device sends a vendor specific event
1895                                  * indicating that the bootup completed.
1896                                  */
1897                                 btusb_intel_bootup(data, ptr, len);
1898                                 break;
1899                         case 0x06:
1900                                 /* When the firmware loading completes the
1901                                  * device sends out a vendor specific event
1902                                  * indicating the result of the firmware
1903                                  * loading.
1904                                  */
1905                                 btusb_intel_secure_send_result(data, ptr, len);
1906                                 break;
1907                         }
1908                 }
1909         }
1910
1911         return hci_recv_frame(hdev, skb);
1912 }
1913
1914 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
1915 {
1916         struct btusb_data *data = hci_get_drvdata(hdev);
1917         struct urb *urb;
1918
1919         BT_DBG("%s", hdev->name);
1920
1921         switch (hci_skb_pkt_type(skb)) {
1922         case HCI_COMMAND_PKT:
1923                 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1924                         struct hci_command_hdr *cmd = (void *)skb->data;
1925                         __u16 opcode = le16_to_cpu(cmd->opcode);
1926
1927                         /* When in bootloader mode and the command 0xfc09
1928                          * is received, it needs to be send down the
1929                          * bulk endpoint. So allocate a bulk URB instead.
1930                          */
1931                         if (opcode == 0xfc09)
1932                                 urb = alloc_bulk_urb(hdev, skb);
1933                         else
1934                                 urb = alloc_ctrl_urb(hdev, skb);
1935
1936                         /* When the 0xfc01 command is issued to boot into
1937                          * the operational firmware, it will actually not
1938                          * send a command complete event. To keep the flow
1939                          * control working inject that event here.
1940                          */
1941                         if (opcode == 0xfc01)
1942                                 inject_cmd_complete(hdev, opcode);
1943                 } else {
1944                         urb = alloc_ctrl_urb(hdev, skb);
1945                 }
1946                 if (IS_ERR(urb))
1947                         return PTR_ERR(urb);
1948
1949                 hdev->stat.cmd_tx++;
1950                 return submit_or_queue_tx_urb(hdev, urb);
1951
1952         case HCI_ACLDATA_PKT:
1953                 urb = alloc_bulk_urb(hdev, skb);
1954                 if (IS_ERR(urb))
1955                         return PTR_ERR(urb);
1956
1957                 hdev->stat.acl_tx++;
1958                 return submit_or_queue_tx_urb(hdev, urb);
1959
1960         case HCI_SCODATA_PKT:
1961                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1962                         return -ENODEV;
1963
1964                 urb = alloc_isoc_urb(hdev, skb);
1965                 if (IS_ERR(urb))
1966                         return PTR_ERR(urb);
1967
1968                 hdev->stat.sco_tx++;
1969                 return submit_tx_urb(hdev, urb);
1970         }
1971
1972         return -EILSEQ;
1973 }
1974
1975 static int btusb_setup_intel_new(struct hci_dev *hdev)
1976 {
1977         static const u8 reset_param[] = { 0x00, 0x01, 0x00, 0x01,
1978                                           0x00, 0x08, 0x04, 0x00 };
1979         struct btusb_data *data = hci_get_drvdata(hdev);
1980         struct sk_buff *skb;
1981         struct intel_version ver;
1982         struct intel_boot_params *params;
1983         const struct firmware *fw;
1984         const u8 *fw_ptr;
1985         u32 frag_len;
1986         char fwname[64];
1987         ktime_t calltime, delta, rettime;
1988         unsigned long long duration;
1989         int err;
1990
1991         BT_DBG("%s", hdev->name);
1992
1993         calltime = ktime_get();
1994
1995         /* Read the Intel version information to determine if the device
1996          * is in bootloader mode or if it already has operational firmware
1997          * loaded.
1998          */
1999         err = btintel_read_version(hdev, &ver);
2000         if (err)
2001                 return err;
2002
2003         /* The hardware platform number has a fixed value of 0x37 and
2004          * for now only accept this single value.
2005          */
2006         if (ver.hw_platform != 0x37) {
2007                 BT_ERR("%s: Unsupported Intel hardware platform (%u)",
2008                        hdev->name, ver.hw_platform);
2009                 return -EINVAL;
2010         }
2011
2012         /* At the moment the iBT 3.0 hardware variants 0x0b (LnP/SfP)
2013          * and 0x0c (WsP) are supported by this firmware loading method.
2014          *
2015          * This check has been put in place to ensure correct forward
2016          * compatibility options when newer hardware variants come along.
2017          */
2018         if (ver.hw_variant != 0x0b && ver.hw_variant != 0x0c) {
2019                 BT_ERR("%s: Unsupported Intel hardware variant (%u)",
2020                        hdev->name, ver.hw_variant);
2021                 return -EINVAL;
2022         }
2023
2024         btintel_version_info(hdev, &ver);
2025
2026         /* The firmware variant determines if the device is in bootloader
2027          * mode or is running operational firmware. The value 0x06 identifies
2028          * the bootloader and the value 0x23 identifies the operational
2029          * firmware.
2030          *
2031          * When the operational firmware is already present, then only
2032          * the check for valid Bluetooth device address is needed. This
2033          * determines if the device will be added as configured or
2034          * unconfigured controller.
2035          *
2036          * It is not possible to use the Secure Boot Parameters in this
2037          * case since that command is only available in bootloader mode.
2038          */
2039         if (ver.fw_variant == 0x23) {
2040                 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2041                 btintel_check_bdaddr(hdev);
2042                 return 0;
2043         }
2044
2045         /* If the device is not in bootloader mode, then the only possible
2046          * choice is to return an error and abort the device initialization.
2047          */
2048         if (ver.fw_variant != 0x06) {
2049                 BT_ERR("%s: Unsupported Intel firmware variant (%u)",
2050                        hdev->name, ver.fw_variant);
2051                 return -ENODEV;
2052         }
2053
2054         /* Read the secure boot parameters to identify the operating
2055          * details of the bootloader.
2056          */
2057         skb = __hci_cmd_sync(hdev, 0xfc0d, 0, NULL, HCI_INIT_TIMEOUT);
2058         if (IS_ERR(skb)) {
2059                 BT_ERR("%s: Reading Intel boot parameters failed (%ld)",
2060                        hdev->name, PTR_ERR(skb));
2061                 return PTR_ERR(skb);
2062         }
2063
2064         if (skb->len != sizeof(*params)) {
2065                 BT_ERR("%s: Intel boot parameters size mismatch", hdev->name);
2066                 kfree_skb(skb);
2067                 return -EILSEQ;
2068         }
2069
2070         params = (struct intel_boot_params *)skb->data;
2071
2072         BT_INFO("%s: Device revision is %u", hdev->name,
2073                 le16_to_cpu(params->dev_revid));
2074
2075         BT_INFO("%s: Secure boot is %s", hdev->name,
2076                 params->secure_boot ? "enabled" : "disabled");
2077
2078         BT_INFO("%s: OTP lock is %s", hdev->name,
2079                 params->otp_lock ? "enabled" : "disabled");
2080
2081         BT_INFO("%s: API lock is %s", hdev->name,
2082                 params->api_lock ? "enabled" : "disabled");
2083
2084         BT_INFO("%s: Debug lock is %s", hdev->name,
2085                 params->debug_lock ? "enabled" : "disabled");
2086
2087         BT_INFO("%s: Minimum firmware build %u week %u %u", hdev->name,
2088                 params->min_fw_build_nn, params->min_fw_build_cw,
2089                 2000 + params->min_fw_build_yy);
2090
2091         /* It is required that every single firmware fragment is acknowledged
2092          * with a command complete event. If the boot parameters indicate
2093          * that this bootloader does not send them, then abort the setup.
2094          */
2095         if (params->limited_cce != 0x00) {
2096                 BT_ERR("%s: Unsupported Intel firmware loading method (%u)",
2097                        hdev->name, params->limited_cce);
2098                 kfree_skb(skb);
2099                 return -EINVAL;
2100         }
2101
2102         /* If the OTP has no valid Bluetooth device address, then there will
2103          * also be no valid address for the operational firmware.
2104          */
2105         if (!bacmp(&params->otp_bdaddr, BDADDR_ANY)) {
2106                 BT_INFO("%s: No device address configured", hdev->name);
2107                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2108         }
2109
2110         /* With this Intel bootloader only the hardware variant and device
2111          * revision information are used to select the right firmware.
2112          *
2113          * The firmware filename is ibt-<hw_variant>-<dev_revid>.sfi.
2114          *
2115          * Currently the supported hardware variants are:
2116          *   11 (0x0b) for iBT3.0 (LnP/SfP)
2117          *   12 (0x0c) for iBT3.5 (WsP)
2118          */
2119         snprintf(fwname, sizeof(fwname), "intel/ibt-%u-%u.sfi",
2120                  le16_to_cpu(ver.hw_variant),
2121                  le16_to_cpu(params->dev_revid));
2122
2123         err = request_firmware(&fw, fwname, &hdev->dev);
2124         if (err < 0) {
2125                 BT_ERR("%s: Failed to load Intel firmware file (%d)",
2126                        hdev->name, err);
2127                 kfree_skb(skb);
2128                 return err;
2129         }
2130
2131         BT_INFO("%s: Found device firmware: %s", hdev->name, fwname);
2132
2133         /* Save the DDC file name for later use to apply once the firmware
2134          * downloading is done.
2135          */
2136         snprintf(fwname, sizeof(fwname), "intel/ibt-%u-%u.ddc",
2137                  le16_to_cpu(ver.hw_variant),
2138                  le16_to_cpu(params->dev_revid));
2139
2140         kfree_skb(skb);
2141
2142         if (fw->size < 644) {
2143                 BT_ERR("%s: Invalid size of firmware file (%zu)",
2144                        hdev->name, fw->size);
2145                 err = -EBADF;
2146                 goto done;
2147         }
2148
2149         set_bit(BTUSB_DOWNLOADING, &data->flags);
2150
2151         /* Start the firmware download transaction with the Init fragment
2152          * represented by the 128 bytes of CSS header.
2153          */
2154         err = btintel_secure_send(hdev, 0x00, 128, fw->data);
2155         if (err < 0) {
2156                 BT_ERR("%s: Failed to send firmware header (%d)",
2157                        hdev->name, err);
2158                 goto done;
2159         }
2160
2161         /* Send the 256 bytes of public key information from the firmware
2162          * as the PKey fragment.
2163          */
2164         err = btintel_secure_send(hdev, 0x03, 256, fw->data + 128);
2165         if (err < 0) {
2166                 BT_ERR("%s: Failed to send firmware public key (%d)",
2167                        hdev->name, err);
2168                 goto done;
2169         }
2170
2171         /* Send the 256 bytes of signature information from the firmware
2172          * as the Sign fragment.
2173          */
2174         err = btintel_secure_send(hdev, 0x02, 256, fw->data + 388);
2175         if (err < 0) {
2176                 BT_ERR("%s: Failed to send firmware signature (%d)",
2177                        hdev->name, err);
2178                 goto done;
2179         }
2180
2181         fw_ptr = fw->data + 644;
2182         frag_len = 0;
2183
2184         while (fw_ptr - fw->data < fw->size) {
2185                 struct hci_command_hdr *cmd = (void *)(fw_ptr + frag_len);
2186
2187                 frag_len += sizeof(*cmd) + cmd->plen;
2188
2189                 /* The parameter length of the secure send command requires
2190                  * a 4 byte alignment. It happens so that the firmware file
2191                  * contains proper Intel_NOP commands to align the fragments
2192                  * as needed.
2193                  *
2194                  * Send set of commands with 4 byte alignment from the
2195                  * firmware data buffer as a single Data fragement.
2196                  */
2197                 if (!(frag_len % 4)) {
2198                         err = btintel_secure_send(hdev, 0x01, frag_len, fw_ptr);
2199                         if (err < 0) {
2200                                 BT_ERR("%s: Failed to send firmware data (%d)",
2201                                        hdev->name, err);
2202                                 goto done;
2203                         }
2204
2205                         fw_ptr += frag_len;
2206                         frag_len = 0;
2207                 }
2208         }
2209
2210         set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2211
2212         BT_INFO("%s: Waiting for firmware download to complete", hdev->name);
2213
2214         /* Before switching the device into operational mode and with that
2215          * booting the loaded firmware, wait for the bootloader notification
2216          * that all fragments have been successfully received.
2217          *
2218          * When the event processing receives the notification, then the
2219          * BTUSB_DOWNLOADING flag will be cleared.
2220          *
2221          * The firmware loading should not take longer than 5 seconds
2222          * and thus just timeout if that happens and fail the setup
2223          * of this device.
2224          */
2225         err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
2226                                   TASK_INTERRUPTIBLE,
2227                                   msecs_to_jiffies(5000));
2228         if (err == -EINTR) {
2229                 BT_ERR("%s: Firmware loading interrupted", hdev->name);
2230                 goto done;
2231         }
2232
2233         if (err) {
2234                 BT_ERR("%s: Firmware loading timeout", hdev->name);
2235                 err = -ETIMEDOUT;
2236                 goto done;
2237         }
2238
2239         if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) {
2240                 BT_ERR("%s: Firmware loading failed", hdev->name);
2241                 err = -ENOEXEC;
2242                 goto done;
2243         }
2244
2245         rettime = ktime_get();
2246         delta = ktime_sub(rettime, calltime);
2247         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2248
2249         BT_INFO("%s: Firmware loaded in %llu usecs", hdev->name, duration);
2250
2251 done:
2252         release_firmware(fw);
2253
2254         if (err < 0)
2255                 return err;
2256
2257         calltime = ktime_get();
2258
2259         set_bit(BTUSB_BOOTING, &data->flags);
2260
2261         skb = __hci_cmd_sync(hdev, 0xfc01, sizeof(reset_param), reset_param,
2262                              HCI_INIT_TIMEOUT);
2263         if (IS_ERR(skb))
2264                 return PTR_ERR(skb);
2265
2266         kfree_skb(skb);
2267
2268         /* The bootloader will not indicate when the device is ready. This
2269          * is done by the operational firmware sending bootup notification.
2270          *
2271          * Booting into operational firmware should not take longer than
2272          * 1 second. However if that happens, then just fail the setup
2273          * since something went wrong.
2274          */
2275         BT_INFO("%s: Waiting for device to boot", hdev->name);
2276
2277         err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING,
2278                                   TASK_INTERRUPTIBLE,
2279                                   msecs_to_jiffies(1000));
2280
2281         if (err == -EINTR) {
2282                 BT_ERR("%s: Device boot interrupted", hdev->name);
2283                 return -EINTR;
2284         }
2285
2286         if (err) {
2287                 BT_ERR("%s: Device boot timeout", hdev->name);
2288                 return -ETIMEDOUT;
2289         }
2290
2291         rettime = ktime_get();
2292         delta = ktime_sub(rettime, calltime);
2293         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2294
2295         BT_INFO("%s: Device booted in %llu usecs", hdev->name, duration);
2296
2297         clear_bit(BTUSB_BOOTLOADER, &data->flags);
2298
2299         /* Once the device is running in operational mode, it needs to apply
2300          * the device configuration (DDC) parameters.
2301          *
2302          * The device can work without DDC parameters, so even if it fails
2303          * to load the file, no need to fail the setup.
2304          */
2305         btintel_load_ddc_config(hdev, fwname);
2306
2307         /* Set the event mask for Intel specific vendor events. This enables
2308          * a few extra events that are useful during general operation. It
2309          * does not enable any debugging related events.
2310          *
2311          * The device will function correctly without these events enabled
2312          * and thus no need to fail the setup.
2313          */
2314         btintel_set_event_mask(hdev, false);
2315
2316         return 0;
2317 }
2318
2319 static int btusb_shutdown_intel(struct hci_dev *hdev)
2320 {
2321         struct sk_buff *skb;
2322         long ret;
2323
2324         /* Some platforms have an issue with BT LED when the interface is
2325          * down or BT radio is turned off, which takes 5 seconds to BT LED
2326          * goes off. This command turns off the BT LED immediately.
2327          */
2328         skb = __hci_cmd_sync(hdev, 0xfc3f, 0, NULL, HCI_INIT_TIMEOUT);
2329         if (IS_ERR(skb)) {
2330                 ret = PTR_ERR(skb);
2331                 BT_ERR("%s: turning off Intel device LED failed (%ld)",
2332                        hdev->name, ret);
2333                 return ret;
2334         }
2335         kfree_skb(skb);
2336
2337         return 0;
2338 }
2339
2340 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
2341                                     const bdaddr_t *bdaddr)
2342 {
2343         struct sk_buff *skb;
2344         u8 buf[8];
2345         long ret;
2346
2347         buf[0] = 0xfe;
2348         buf[1] = sizeof(bdaddr_t);
2349         memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
2350
2351         skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2352         if (IS_ERR(skb)) {
2353                 ret = PTR_ERR(skb);
2354                 BT_ERR("%s: changing Marvell device address failed (%ld)",
2355                        hdev->name, ret);
2356                 return ret;
2357         }
2358         kfree_skb(skb);
2359
2360         return 0;
2361 }
2362
2363 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
2364                                     const bdaddr_t *bdaddr)
2365 {
2366         struct sk_buff *skb;
2367         u8 buf[10];
2368         long ret;
2369
2370         buf[0] = 0x01;
2371         buf[1] = 0x01;
2372         buf[2] = 0x00;
2373         buf[3] = sizeof(bdaddr_t);
2374         memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
2375
2376         skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2377         if (IS_ERR(skb)) {
2378                 ret = PTR_ERR(skb);
2379                 BT_ERR("%s: Change address command failed (%ld)",
2380                        hdev->name, ret);
2381                 return ret;
2382         }
2383         kfree_skb(skb);
2384
2385         return 0;
2386 }
2387
2388 #define QCA_DFU_PACKET_LEN      4096
2389
2390 #define QCA_GET_TARGET_VERSION  0x09
2391 #define QCA_CHECK_STATUS        0x05
2392 #define QCA_DFU_DOWNLOAD        0x01
2393
2394 #define QCA_SYSCFG_UPDATED      0x40
2395 #define QCA_PATCH_UPDATED       0x80
2396 #define QCA_DFU_TIMEOUT         3000
2397
2398 struct qca_version {
2399         __le32  rom_version;
2400         __le32  patch_version;
2401         __le32  ram_version;
2402         __le32  ref_clock;
2403         __u8    reserved[4];
2404 } __packed;
2405
2406 struct qca_rampatch_version {
2407         __le16  rom_version;
2408         __le16  patch_version;
2409 } __packed;
2410
2411 struct qca_device_info {
2412         u32     rom_version;
2413         u8      rampatch_hdr;   /* length of header in rampatch */
2414         u8      nvm_hdr;        /* length of header in NVM */
2415         u8      ver_offset;     /* offset of version structure in rampatch */
2416 };
2417
2418 static const struct qca_device_info qca_devices_table[] = {
2419         { 0x00000100, 20, 4, 10 }, /* Rome 1.0 */
2420         { 0x00000101, 20, 4, 10 }, /* Rome 1.1 */
2421         { 0x00000200, 28, 4, 18 }, /* Rome 2.0 */
2422         { 0x00000201, 28, 4, 18 }, /* Rome 2.1 */
2423         { 0x00000300, 28, 4, 18 }, /* Rome 3.0 */
2424         { 0x00000302, 28, 4, 18 }, /* Rome 3.2 */
2425 };
2426
2427 static int btusb_qca_send_vendor_req(struct hci_dev *hdev, u8 request,
2428                                      void *data, u16 size)
2429 {
2430         struct btusb_data *btdata = hci_get_drvdata(hdev);
2431         struct usb_device *udev = btdata->udev;
2432         int pipe, err;
2433         u8 *buf;
2434
2435         buf = kmalloc(size, GFP_KERNEL);
2436         if (!buf)
2437                 return -ENOMEM;
2438
2439         /* Found some of USB hosts have IOT issues with ours so that we should
2440          * not wait until HCI layer is ready.
2441          */
2442         pipe = usb_rcvctrlpipe(udev, 0);
2443         err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
2444                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2445         if (err < 0) {
2446                 BT_ERR("%s: Failed to access otp area (%d)", hdev->name, err);
2447                 goto done;
2448         }
2449
2450         memcpy(data, buf, size);
2451
2452 done:
2453         kfree(buf);
2454
2455         return err;
2456 }
2457
2458 static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
2459                                        const struct firmware *firmware,
2460                                        size_t hdr_size)
2461 {
2462         struct btusb_data *btdata = hci_get_drvdata(hdev);
2463         struct usb_device *udev = btdata->udev;
2464         size_t count, size, sent = 0;
2465         int pipe, len, err;
2466         u8 *buf;
2467
2468         buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
2469         if (!buf)
2470                 return -ENOMEM;
2471
2472         count = firmware->size;
2473
2474         size = min_t(size_t, count, hdr_size);
2475         memcpy(buf, firmware->data, size);
2476
2477         /* USB patches should go down to controller through USB path
2478          * because binary format fits to go down through USB channel.
2479          * USB control path is for patching headers and USB bulk is for
2480          * patch body.
2481          */
2482         pipe = usb_sndctrlpipe(udev, 0);
2483         err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
2484                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2485         if (err < 0) {
2486                 BT_ERR("%s: Failed to send headers (%d)", hdev->name, err);
2487                 goto done;
2488         }
2489
2490         sent += size;
2491         count -= size;
2492
2493         while (count) {
2494                 size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
2495
2496                 memcpy(buf, firmware->data + sent, size);
2497
2498                 pipe = usb_sndbulkpipe(udev, 0x02);
2499                 err = usb_bulk_msg(udev, pipe, buf, size, &len,
2500                                    QCA_DFU_TIMEOUT);
2501                 if (err < 0) {
2502                         BT_ERR("%s: Failed to send body at %zd of %zd (%d)",
2503                                hdev->name, sent, firmware->size, err);
2504                         break;
2505                 }
2506
2507                 if (size != len) {
2508                         BT_ERR("%s: Failed to get bulk buffer", hdev->name);
2509                         err = -EILSEQ;
2510                         break;
2511                 }
2512
2513                 sent  += size;
2514                 count -= size;
2515         }
2516
2517 done:
2518         kfree(buf);
2519         return err;
2520 }
2521
2522 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
2523                                          struct qca_version *ver,
2524                                          const struct qca_device_info *info)
2525 {
2526         struct qca_rampatch_version *rver;
2527         const struct firmware *fw;
2528         u32 ver_rom, ver_patch;
2529         u16 rver_rom, rver_patch;
2530         char fwname[64];
2531         int err;
2532
2533         ver_rom = le32_to_cpu(ver->rom_version);
2534         ver_patch = le32_to_cpu(ver->patch_version);
2535
2536         snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom);
2537
2538         err = request_firmware(&fw, fwname, &hdev->dev);
2539         if (err) {
2540                 BT_ERR("%s: failed to request rampatch file: %s (%d)",
2541                        hdev->name, fwname, err);
2542                 return err;
2543         }
2544
2545         BT_INFO("%s: using rampatch file: %s", hdev->name, fwname);
2546
2547         rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
2548         rver_rom = le16_to_cpu(rver->rom_version);
2549         rver_patch = le16_to_cpu(rver->patch_version);
2550
2551         BT_INFO("%s: QCA: patch rome 0x%x build 0x%x, firmware rome 0x%x "
2552                 "build 0x%x", hdev->name, rver_rom, rver_patch, ver_rom,
2553                 ver_patch);
2554
2555         if (rver_rom != ver_rom || rver_patch <= ver_patch) {
2556                 BT_ERR("%s: rampatch file version did not match with firmware",
2557                        hdev->name);
2558                 err = -EINVAL;
2559                 goto done;
2560         }
2561
2562         err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
2563
2564 done:
2565         release_firmware(fw);
2566
2567         return err;
2568 }
2569
2570 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
2571                                     struct qca_version *ver,
2572                                     const struct qca_device_info *info)
2573 {
2574         const struct firmware *fw;
2575         char fwname[64];
2576         int err;
2577
2578         snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x.bin",
2579                  le32_to_cpu(ver->rom_version));
2580
2581         err = request_firmware(&fw, fwname, &hdev->dev);
2582         if (err) {
2583                 BT_ERR("%s: failed to request NVM file: %s (%d)",
2584                        hdev->name, fwname, err);
2585                 return err;
2586         }
2587
2588         BT_INFO("%s: using NVM file: %s", hdev->name, fwname);
2589
2590         err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
2591
2592         release_firmware(fw);
2593
2594         return err;
2595 }
2596
2597 static int btusb_setup_qca(struct hci_dev *hdev)
2598 {
2599         const struct qca_device_info *info = NULL;
2600         struct qca_version ver;
2601         u32 ver_rom;
2602         u8 status;
2603         int i, err;
2604
2605         err = btusb_qca_send_vendor_req(hdev, QCA_GET_TARGET_VERSION, &ver,
2606                                         sizeof(ver));
2607         if (err < 0)
2608                 return err;
2609
2610         ver_rom = le32_to_cpu(ver.rom_version);
2611         for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
2612                 if (ver_rom == qca_devices_table[i].rom_version)
2613                         info = &qca_devices_table[i];
2614         }
2615         if (!info) {
2616                 BT_ERR("%s: don't support firmware rome 0x%x", hdev->name,
2617                        ver_rom);
2618                 return -ENODEV;
2619         }
2620
2621         err = btusb_qca_send_vendor_req(hdev, QCA_CHECK_STATUS, &status,
2622                                         sizeof(status));
2623         if (err < 0)
2624                 return err;
2625
2626         if (!(status & QCA_PATCH_UPDATED)) {
2627                 err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
2628                 if (err < 0)
2629                         return err;
2630         }
2631
2632         if (!(status & QCA_SYSCFG_UPDATED)) {
2633                 err = btusb_setup_qca_load_nvm(hdev, &ver, info);
2634                 if (err < 0)
2635                         return err;
2636         }
2637
2638         return 0;
2639 }
2640
2641 #ifdef CONFIG_BT_HCIBTUSB_BCM
2642 static inline int __set_diag_interface(struct hci_dev *hdev)
2643 {
2644         struct btusb_data *data = hci_get_drvdata(hdev);
2645         struct usb_interface *intf = data->diag;
2646         int i;
2647
2648         if (!data->diag)
2649                 return -ENODEV;
2650
2651         data->diag_tx_ep = NULL;
2652         data->diag_rx_ep = NULL;
2653
2654         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2655                 struct usb_endpoint_descriptor *ep_desc;
2656
2657                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2658
2659                 if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
2660                         data->diag_tx_ep = ep_desc;
2661                         continue;
2662                 }
2663
2664                 if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
2665                         data->diag_rx_ep = ep_desc;
2666                         continue;
2667                 }
2668         }
2669
2670         if (!data->diag_tx_ep || !data->diag_rx_ep) {
2671                 BT_ERR("%s invalid diagnostic descriptors", hdev->name);
2672                 return -ENODEV;
2673         }
2674
2675         return 0;
2676 }
2677
2678 static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable)
2679 {
2680         struct btusb_data *data = hci_get_drvdata(hdev);
2681         struct sk_buff *skb;
2682         struct urb *urb;
2683         unsigned int pipe;
2684
2685         if (!data->diag_tx_ep)
2686                 return ERR_PTR(-ENODEV);
2687
2688         urb = usb_alloc_urb(0, GFP_KERNEL);
2689         if (!urb)
2690                 return ERR_PTR(-ENOMEM);
2691
2692         skb = bt_skb_alloc(2, GFP_KERNEL);
2693         if (!skb) {
2694                 usb_free_urb(urb);
2695                 return ERR_PTR(-ENOMEM);
2696         }
2697
2698         *skb_put(skb, 1) = 0xf0;
2699         *skb_put(skb, 1) = enable;
2700
2701         pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress);
2702
2703         usb_fill_bulk_urb(urb, data->udev, pipe,
2704                           skb->data, skb->len, btusb_tx_complete, skb);
2705
2706         skb->dev = (void *)hdev;
2707
2708         return urb;
2709 }
2710
2711 static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable)
2712 {
2713         struct btusb_data *data = hci_get_drvdata(hdev);
2714         struct urb *urb;
2715
2716         if (!data->diag)
2717                 return -ENODEV;
2718
2719         if (!test_bit(HCI_RUNNING, &hdev->flags))
2720                 return -ENETDOWN;
2721
2722         urb = alloc_diag_urb(hdev, enable);
2723         if (IS_ERR(urb))
2724                 return PTR_ERR(urb);
2725
2726         return submit_or_queue_tx_urb(hdev, urb);
2727 }
2728 #endif
2729
2730 static int btusb_probe(struct usb_interface *intf,
2731                        const struct usb_device_id *id)
2732 {
2733         struct usb_endpoint_descriptor *ep_desc;
2734         struct btusb_data *data;
2735         struct hci_dev *hdev;
2736         unsigned ifnum_base;
2737         int i, err;
2738
2739         BT_DBG("intf %p id %p", intf, id);
2740
2741         /* interface numbers are hardcoded in the spec */
2742         if (intf->cur_altsetting->desc.bInterfaceNumber != 0) {
2743                 if (!(id->driver_info & BTUSB_IFNUM_2))
2744                         return -ENODEV;
2745                 if (intf->cur_altsetting->desc.bInterfaceNumber != 2)
2746                         return -ENODEV;
2747         }
2748
2749         ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber;
2750
2751         if (!id->driver_info) {
2752                 const struct usb_device_id *match;
2753
2754                 match = usb_match_id(intf, blacklist_table);
2755                 if (match)
2756                         id = match;
2757         }
2758
2759         if (id->driver_info == BTUSB_IGNORE)
2760                 return -ENODEV;
2761
2762         if (id->driver_info & BTUSB_ATH3012) {
2763                 struct usb_device *udev = interface_to_usbdev(intf);
2764
2765                 /* Old firmware would otherwise let ath3k driver load
2766                  * patch and sysconfig files */
2767                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
2768                         return -ENODEV;
2769         }
2770
2771         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
2772         if (!data)
2773                 return -ENOMEM;
2774
2775         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2776                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2777
2778                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
2779                         data->intr_ep = ep_desc;
2780                         continue;
2781                 }
2782
2783                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
2784                         data->bulk_tx_ep = ep_desc;
2785                         continue;
2786                 }
2787
2788                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
2789                         data->bulk_rx_ep = ep_desc;
2790                         continue;
2791                 }
2792         }
2793
2794         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
2795                 return -ENODEV;
2796
2797         if (id->driver_info & BTUSB_AMP) {
2798                 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
2799                 data->cmdreq = 0x2b;
2800         } else {
2801                 data->cmdreq_type = USB_TYPE_CLASS;
2802                 data->cmdreq = 0x00;
2803         }
2804
2805         data->udev = interface_to_usbdev(intf);
2806         data->intf = intf;
2807
2808         INIT_WORK(&data->work, btusb_work);
2809         INIT_WORK(&data->waker, btusb_waker);
2810         init_usb_anchor(&data->deferred);
2811         init_usb_anchor(&data->tx_anchor);
2812         spin_lock_init(&data->txlock);
2813
2814         init_usb_anchor(&data->intr_anchor);
2815         init_usb_anchor(&data->bulk_anchor);
2816         init_usb_anchor(&data->isoc_anchor);
2817         init_usb_anchor(&data->diag_anchor);
2818         spin_lock_init(&data->rxlock);
2819
2820         if (id->driver_info & BTUSB_INTEL_NEW) {
2821                 data->recv_event = btusb_recv_event_intel;
2822                 data->recv_bulk = btusb_recv_bulk_intel;
2823                 set_bit(BTUSB_BOOTLOADER, &data->flags);
2824         } else {
2825                 data->recv_event = hci_recv_frame;
2826                 data->recv_bulk = btusb_recv_bulk;
2827         }
2828
2829         hdev = hci_alloc_dev();
2830         if (!hdev)
2831                 return -ENOMEM;
2832
2833         hdev->bus = HCI_USB;
2834         hci_set_drvdata(hdev, data);
2835
2836         if (id->driver_info & BTUSB_AMP)
2837                 hdev->dev_type = HCI_AMP;
2838         else
2839                 hdev->dev_type = HCI_PRIMARY;
2840
2841         data->hdev = hdev;
2842
2843         SET_HCIDEV_DEV(hdev, &intf->dev);
2844
2845         hdev->open   = btusb_open;
2846         hdev->close  = btusb_close;
2847         hdev->flush  = btusb_flush;
2848         hdev->send   = btusb_send_frame;
2849         hdev->notify = btusb_notify;
2850
2851         if (id->driver_info & BTUSB_CW6622)
2852                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
2853
2854         if (id->driver_info & BTUSB_BCM2045)
2855                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
2856
2857         if (id->driver_info & BTUSB_BCM92035)
2858                 hdev->setup = btusb_setup_bcm92035;
2859
2860 #ifdef CONFIG_BT_HCIBTUSB_BCM
2861         if (id->driver_info & BTUSB_BCM_PATCHRAM) {
2862                 hdev->manufacturer = 15;
2863                 hdev->setup = btbcm_setup_patchram;
2864                 hdev->set_diag = btusb_bcm_set_diag;
2865                 hdev->set_bdaddr = btbcm_set_bdaddr;
2866
2867                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
2868                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
2869         }
2870
2871         if (id->driver_info & BTUSB_BCM_APPLE) {
2872                 hdev->manufacturer = 15;
2873                 hdev->setup = btbcm_setup_apple;
2874                 hdev->set_diag = btusb_bcm_set_diag;
2875
2876                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
2877                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
2878         }
2879 #endif
2880
2881         if (id->driver_info & BTUSB_INTEL) {
2882                 hdev->manufacturer = 2;
2883                 hdev->setup = btusb_setup_intel;
2884                 hdev->shutdown = btusb_shutdown_intel;
2885                 hdev->set_diag = btintel_set_diag_mfg;
2886                 hdev->set_bdaddr = btintel_set_bdaddr;
2887                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2888                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
2889                 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
2890         }
2891
2892         if (id->driver_info & BTUSB_INTEL_NEW) {
2893                 hdev->manufacturer = 2;
2894                 hdev->send = btusb_send_frame_intel;
2895                 hdev->setup = btusb_setup_intel_new;
2896                 hdev->hw_error = btintel_hw_error;
2897                 hdev->set_diag = btintel_set_diag;
2898                 hdev->set_bdaddr = btintel_set_bdaddr;
2899                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2900                 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
2901         }
2902
2903         if (id->driver_info & BTUSB_MARVELL)
2904                 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
2905
2906         if (id->driver_info & BTUSB_SWAVE) {
2907                 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
2908                 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
2909         }
2910
2911         if (id->driver_info & BTUSB_INTEL_BOOT) {
2912                 hdev->manufacturer = 2;
2913                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
2914         }
2915
2916         if (id->driver_info & BTUSB_ATH3012) {
2917                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
2918                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
2919                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2920         }
2921
2922         if (id->driver_info & BTUSB_QCA_ROME) {
2923                 data->setup_on_usb = btusb_setup_qca;
2924                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
2925         }
2926
2927 #ifdef CONFIG_BT_HCIBTUSB_RTL
2928         if (id->driver_info & BTUSB_REALTEK) {
2929                 hdev->setup = btrtl_setup_realtek;
2930
2931                 /* Realtek devices lose their updated firmware over suspend,
2932                  * but the USB hub doesn't notice any status change.
2933                  * Explicitly request a device reset on resume.
2934                  */
2935                 set_bit(BTUSB_RESET_RESUME, &data->flags);
2936         }
2937 #endif
2938
2939         if (id->driver_info & BTUSB_AMP) {
2940                 /* AMP controllers do not support SCO packets */
2941                 data->isoc = NULL;
2942         } else {
2943                 /* Interface orders are hardcoded in the specification */
2944                 data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1);
2945         }
2946
2947         if (!reset)
2948                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2949
2950         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
2951                 if (!disable_scofix)
2952                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
2953         }
2954
2955         if (id->driver_info & BTUSB_BROKEN_ISOC)
2956                 data->isoc = NULL;
2957
2958         if (id->driver_info & BTUSB_DIGIANSWER) {
2959                 data->cmdreq_type = USB_TYPE_VENDOR;
2960                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2961         }
2962
2963         if (id->driver_info & BTUSB_CSR) {
2964                 struct usb_device *udev = data->udev;
2965                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
2966
2967                 /* Old firmware would otherwise execute USB reset */
2968                 if (bcdDevice < 0x117)
2969                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2970
2971                 /* Fake CSR devices with broken commands */
2972                 if (bcdDevice <= 0x100 || bcdDevice == 0x134)
2973                         hdev->setup = btusb_setup_csr;
2974
2975                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
2976         }
2977
2978         if (id->driver_info & BTUSB_SNIFFER) {
2979                 struct usb_device *udev = data->udev;
2980
2981                 /* New sniffer firmware has crippled HCI interface */
2982                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
2983                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
2984         }
2985
2986         if (id->driver_info & BTUSB_INTEL_BOOT) {
2987                 /* A bug in the bootloader causes that interrupt interface is
2988                  * only enabled after receiving SetInterface(0, AltSetting=0).
2989                  */
2990                 err = usb_set_interface(data->udev, 0, 0);
2991                 if (err < 0) {
2992                         BT_ERR("failed to set interface 0, alt 0 %d", err);
2993                         hci_free_dev(hdev);
2994                         return err;
2995                 }
2996         }
2997
2998         if (data->isoc) {
2999                 err = usb_driver_claim_interface(&btusb_driver,
3000                                                  data->isoc, data);
3001                 if (err < 0) {
3002                         hci_free_dev(hdev);
3003                         return err;
3004                 }
3005         }
3006
3007 #ifdef CONFIG_BT_HCIBTUSB_BCM
3008         if (data->diag) {
3009                 if (!usb_driver_claim_interface(&btusb_driver,
3010                                                 data->diag, data))
3011                         __set_diag_interface(hdev);
3012                 else
3013                         data->diag = NULL;
3014         }
3015 #endif
3016
3017         err = hci_register_dev(hdev);
3018         if (err < 0) {
3019                 hci_free_dev(hdev);
3020                 return err;
3021         }
3022
3023         usb_set_intfdata(intf, data);
3024
3025         return 0;
3026 }
3027
3028 static void btusb_disconnect(struct usb_interface *intf)
3029 {
3030         struct btusb_data *data = usb_get_intfdata(intf);
3031         struct hci_dev *hdev;
3032
3033         BT_DBG("intf %p", intf);
3034
3035         if (!data)
3036                 return;
3037
3038         hdev = data->hdev;
3039         usb_set_intfdata(data->intf, NULL);
3040
3041         if (data->isoc)
3042                 usb_set_intfdata(data->isoc, NULL);
3043
3044         if (data->diag)
3045                 usb_set_intfdata(data->diag, NULL);
3046
3047         hci_unregister_dev(hdev);
3048
3049         if (intf == data->intf) {
3050                 if (data->isoc)
3051                         usb_driver_release_interface(&btusb_driver, data->isoc);
3052                 if (data->diag)
3053                         usb_driver_release_interface(&btusb_driver, data->diag);
3054         } else if (intf == data->isoc) {
3055                 if (data->diag)
3056                         usb_driver_release_interface(&btusb_driver, data->diag);
3057                 usb_driver_release_interface(&btusb_driver, data->intf);
3058         } else if (intf == data->diag) {
3059                 usb_driver_release_interface(&btusb_driver, data->intf);
3060                 if (data->isoc)
3061                         usb_driver_release_interface(&btusb_driver, data->isoc);
3062         }
3063
3064         hci_free_dev(hdev);
3065 }
3066
3067 #ifdef CONFIG_PM
3068 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
3069 {
3070         struct btusb_data *data = usb_get_intfdata(intf);
3071
3072         BT_DBG("intf %p", intf);
3073
3074         if (data->suspend_count++)
3075                 return 0;
3076
3077         spin_lock_irq(&data->txlock);
3078         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
3079                 set_bit(BTUSB_SUSPENDING, &data->flags);
3080                 spin_unlock_irq(&data->txlock);
3081         } else {
3082                 spin_unlock_irq(&data->txlock);
3083                 data->suspend_count--;
3084                 return -EBUSY;
3085         }
3086
3087         cancel_work_sync(&data->work);
3088
3089         btusb_stop_traffic(data);
3090         usb_kill_anchored_urbs(&data->tx_anchor);
3091
3092         /* Optionally request a device reset on resume, but only when
3093          * wakeups are disabled. If wakeups are enabled we assume the
3094          * device will stay powered up throughout suspend.
3095          */
3096         if (test_bit(BTUSB_RESET_RESUME, &data->flags) &&
3097             !device_may_wakeup(&data->udev->dev))
3098                 data->udev->reset_resume = 1;
3099
3100         return 0;
3101 }
3102
3103 static void play_deferred(struct btusb_data *data)
3104 {
3105         struct urb *urb;
3106         int err;
3107
3108         while ((urb = usb_get_from_anchor(&data->deferred))) {
3109                 err = usb_submit_urb(urb, GFP_ATOMIC);
3110                 if (err < 0)
3111                         break;
3112
3113                 data->tx_in_flight++;
3114         }
3115         usb_scuttle_anchored_urbs(&data->deferred);
3116 }
3117
3118 static int btusb_resume(struct usb_interface *intf)
3119 {
3120         struct btusb_data *data = usb_get_intfdata(intf);
3121         struct hci_dev *hdev = data->hdev;
3122         int err = 0;
3123
3124         BT_DBG("intf %p", intf);
3125
3126         if (--data->suspend_count)
3127                 return 0;
3128
3129         if (!test_bit(HCI_RUNNING, &hdev->flags))
3130                 goto done;
3131
3132         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
3133                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
3134                 if (err < 0) {
3135                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
3136                         goto failed;
3137                 }
3138         }
3139
3140         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
3141                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
3142                 if (err < 0) {
3143                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
3144                         goto failed;
3145                 }
3146
3147                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
3148         }
3149
3150         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
3151                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
3152                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
3153                 else
3154                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
3155         }
3156
3157         spin_lock_irq(&data->txlock);
3158         play_deferred(data);
3159         clear_bit(BTUSB_SUSPENDING, &data->flags);
3160         spin_unlock_irq(&data->txlock);
3161         schedule_work(&data->work);
3162
3163         return 0;
3164
3165 failed:
3166         usb_scuttle_anchored_urbs(&data->deferred);
3167 done:
3168         spin_lock_irq(&data->txlock);
3169         clear_bit(BTUSB_SUSPENDING, &data->flags);
3170         spin_unlock_irq(&data->txlock);
3171
3172         return err;
3173 }
3174 #endif
3175
3176 static struct usb_driver btusb_driver = {
3177         .name           = "btusb",
3178         .probe          = btusb_probe,
3179         .disconnect     = btusb_disconnect,
3180 #ifdef CONFIG_PM
3181         .suspend        = btusb_suspend,
3182         .resume         = btusb_resume,
3183 #endif
3184         .id_table       = btusb_table,
3185         .supports_autosuspend = 1,
3186         .disable_hub_initiated_lpm = 1,
3187 };
3188
3189 module_usb_driver(btusb_driver);
3190
3191 module_param(disable_scofix, bool, 0644);
3192 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
3193
3194 module_param(force_scofix, bool, 0644);
3195 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
3196
3197 module_param(reset, bool, 0644);
3198 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
3199
3200 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
3201 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
3202 MODULE_VERSION(VERSION);
3203 MODULE_LICENSE("GPL");