drivers/bluetooth/btusb.c

   1 /*
   2  *
   3  *  Generic Bluetooth USB driver
   4  *
   5  *  Copyright (C) 2005-2008  Marcel Holtmann <marcel@holtmann.org>
   6  *
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, write to the Free Software
  20  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  *
  22  */
  23
  24 #include <linux/module.h>
  25 #include <linux/usb.h>
  26 #include <linux/firmware.h>
  27 #include <asm/unaligned.h>
  28
  29 #include <net/bluetooth/bluetooth.h>
  30 #include <net/bluetooth/hci_core.h>
  31
  32 #include "btintel.h"
  33 #include "btbcm.h"
  34 #include "btrtl.h"
  35
  36 #define VERSION "0.8"
  37
  38 static bool disable_scofix;
  39 static bool force_scofix;
  40
  41 static bool reset = true;
  42
  43 static struct usb_driver btusb_driver;
  44
  45 #define BTUSB_IGNORE            0x01
  46 #define BTUSB_DIGIANSWER        0x02
  47 #define BTUSB_CSR               0x04
  48 #define BTUSB_SNIFFER           0x08
  49 #define BTUSB_BCM92035          0x10
  50 #define BTUSB_BROKEN_ISOC       0x20
  51 #define BTUSB_WRONG_SCO_MTU     0x40
  52 #define BTUSB_ATH3012           0x80
  53 #define BTUSB_INTEL             0x100
  54 #define BTUSB_INTEL_BOOT        0x200
  55 #define BTUSB_BCM_PATCHRAM      0x400
  56 #define BTUSB_MARVELL           0x800
  57 #define BTUSB_SWAVE             0x1000
  58 #define BTUSB_INTEL_NEW         0x2000
  59 #define BTUSB_AMP               0x4000
  60 #define BTUSB_QCA_ROME          0x8000
  61 #define BTUSB_BCM_APPLE         0x10000
  62 #define BTUSB_REALTEK           0x20000
  63 #define BTUSB_BCM2045           0x40000
  64 #define BTUSB_IFNUM_2           0x80000
  65
  66 static const struct usb_device_id btusb_table[] = {
  67         /* Generic Bluetooth USB device */
  68         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  69
  70         /* Generic Bluetooth AMP device */
  71         { USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP },
  72
  73         /* Generic Bluetooth USB interface */
  74         { USB_INTERFACE_INFO(0xe0, 0x01, 0x01) },
  75
  76         /* Apple-specific (Broadcom) devices */
  77         { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01),
  78           .driver_info = BTUSB_BCM_APPLE | BTUSB_IFNUM_2 },
  79
  80         /* MediaTek MT76x0E */
  81         { USB_DEVICE(0x0e8d, 0x763f) },
  82
  83         /* Broadcom SoftSailing reporting vendor specific */
  84         { USB_DEVICE(0x0a5c, 0x21e1) },
  85
  86         /* Apple MacBookPro 7,1 */
  87         { USB_DEVICE(0x05ac, 0x8213) },
  88
  89         /* Apple iMac11,1 */
  90         { USB_DEVICE(0x05ac, 0x8215) },
  91
  92         /* Apple MacBookPro6,2 */
  93         { USB_DEVICE(0x05ac, 0x8218) },
  94
  95         /* Apple MacBookAir3,1, MacBookAir3,2 */
  96         { USB_DEVICE(0x05ac, 0x821b) },
  97
  98         /* Apple MacBookAir4,1 */
  99         { USB_DEVICE(0x05ac, 0x821f) },
 100
 101         /* Apple MacBookPro8,2 */
 102         { USB_DEVICE(0x05ac, 0x821a) },
 103
 104         /* Apple MacMini5,1 */
 105         { USB_DEVICE(0x05ac, 0x8281) },
 106
 107         /* AVM BlueFRITZ! USB v2.0 */
 108         { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE },
 109
 110         /* Bluetooth Ultraport Module from IBM */
 111         { USB_DEVICE(0x04bf, 0x030a) },
 112
 113         /* ALPS Modules with non-standard id */
 114         { USB_DEVICE(0x044e, 0x3001) },
 115         { USB_DEVICE(0x044e, 0x3002) },
 116
 117         /* Ericsson with non-standard id */
 118         { USB_DEVICE(0x0bdb, 0x1002) },
 119
 120         /* Canyon CN-BTU1 with HID interfaces */
 121         { USB_DEVICE(0x0c10, 0x0000) },
 122
 123         /* Broadcom BCM20702A0 */
 124         { USB_DEVICE(0x413c, 0x8197) },
 125
 126         /* Broadcom BCM20702B0 (Dynex/Insignia) */
 127         { USB_DEVICE(0x19ff, 0x0239), .driver_info = BTUSB_BCM_PATCHRAM },
 128
 129         /* Broadcom BCM43142A0 (Foxconn/Lenovo) */
 130         { USB_DEVICE(0x105b, 0xe065), .driver_info = BTUSB_BCM_PATCHRAM },
 131
 132         /* Foxconn - Hon Hai */
 133         { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01),
 134           .driver_info = BTUSB_BCM_PATCHRAM },
 135
 136         /* Lite-On Technology - Broadcom based */
 137         { USB_VENDOR_AND_INTERFACE_INFO(0x04ca, 0xff, 0x01, 0x01),
 138           .driver_info = BTUSB_BCM_PATCHRAM },
 139
 140         /* Broadcom devices with vendor specific id */
 141         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
 142           .driver_info = BTUSB_BCM_PATCHRAM },
 143
 144         /* ASUSTek Computer - Broadcom based */
 145         { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01),
 146           .driver_info = BTUSB_BCM_PATCHRAM },
 147
 148         /* Belkin F8065bf - Broadcom based */
 149         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01),
 150           .driver_info = BTUSB_BCM_PATCHRAM },
 151
 152         /* IMC Networks - Broadcom based */
 153         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01),
 154           .driver_info = BTUSB_BCM_PATCHRAM },
 155
 156         /* Toshiba Corp - Broadcom based */
 157         { USB_VENDOR_AND_INTERFACE_INFO(0x0930, 0xff, 0x01, 0x01),
 158           .driver_info = BTUSB_BCM_PATCHRAM },
 159
 160         /* Intel Bluetooth USB Bootloader (RAM module) */
 161         { USB_DEVICE(0x8087, 0x0a5a),
 162           .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
 163
 164         { }     /* Terminating entry */
 165 };
 166
 167 MODULE_DEVICE_TABLE(usb, btusb_table);
 168
 169 static const struct usb_device_id blacklist_table[] = {
 170         /* CSR BlueCore devices */
 171         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 172
 173         /* Broadcom BCM2033 without firmware */
 174         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 175
 176         /* Broadcom BCM2045 devices */
 177         { USB_DEVICE(0x0a5c, 0x2045), .driver_info = BTUSB_BCM2045 },
 178
 179         /* Atheros 3011 with sflash firmware */
 180         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 181         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 182         { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE },
 183         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 184         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 185         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 186         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 187
 188         /* Atheros AR9285 Malbec with sflash firmware */
 189         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 190
 191         /* Atheros 3012 with sflash firmware */
 192         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 193         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 194         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 195         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 196         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 197         { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
 198         { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
 199         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 200         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 201         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 202         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 203         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 204         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 205         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 206         { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
 207         { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
 208         { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
 209         { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 },
 210         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 211         { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
 212         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 213         { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
 214         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 215         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 216         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 217         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 218         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 219         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
 220         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 221         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 222         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 223         { USB_DEVICE(0x0cf3, 0x817b), .driver_info = BTUSB_ATH3012 },
 224         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 225         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 226         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 227         { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 },
 228         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 229         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 230         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 231         { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 },
 232         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 233         { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
 234         { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
 235         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
 236         { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
 237
 238         /* Atheros AR5BBU12 with sflash firmware */
 239         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 240
 241         /* Atheros AR5BBU12 with sflash firmware */
 242         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 243         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 244
 245         /* QCA ROME chipset */
 246         { USB_DEVICE(0x0cf3, 0xe007), .driver_info = BTUSB_QCA_ROME },
 247         { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME },
 248         { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME },
 249
 250         /* Broadcom BCM2035 */
 251         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 252         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 253         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 254
 255         /* Broadcom BCM2045 */
 256         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 257         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 258
 259         /* IBM/Lenovo ThinkPad with Broadcom chip */
 260         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 261         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 262
 263         /* HP laptop with Broadcom chip */
 264         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 265
 266         /* Dell laptop with Broadcom chip */
 267         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 268
 269         /* Dell Wireless 370 and 410 devices */
 270         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 271         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 272
 273         /* Belkin F8T012 and F8T013 devices */
 274         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 275         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 276
 277         /* Asus WL-BTD202 device */
 278         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 279
 280         /* Kensington Bluetooth USB adapter */
 281         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 282
 283         /* RTX Telecom based adapters with buggy SCO support */
 284         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 285         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 286
 287         /* CONWISE Technology based adapters with buggy SCO support */
 288         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 289
 290         /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
 291         { USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE },
 292
 293         /* Digianswer devices */
 294         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 295         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 296
 297         /* CSR BlueCore Bluetooth Sniffer */
 298         { USB_DEVICE(0x0a12, 0x0002),
 299           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 300
 301         /* Frontline ComProbe Bluetooth Sniffer */
 302         { USB_DEVICE(0x16d3, 0x0002),
 303           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 304
 305         /* Marvell Bluetooth devices */
 306         { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
 307         { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
 308
 309         /* Intel Bluetooth devices */
 310         { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR },
 311         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 312         { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
 313         { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_NEW },
 314
 315         /* Other Intel Bluetooth devices */
 316         { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01),
 317           .driver_info = BTUSB_IGNORE },
 318
 319         /* Realtek Bluetooth devices */
 320         { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01),
 321           .driver_info = BTUSB_REALTEK },
 322
 323         /* Additional Realtek 8723AE Bluetooth devices */
 324         { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK },
 325         { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK },
 326
 327         /* Additional Realtek 8723BE Bluetooth devices */
 328         { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK },
 329         { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK },
 330         { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
 331         { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
 332         { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },
 333
 334         /* Additional Realtek 8821AE Bluetooth devices */
 335         { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
 336         { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },
 337         { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK },
 338         { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK },
 339         { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK },
 340
 341         /* Silicon Wave based devices */
 342         { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE },
 343
 344         { }     /* Terminating entry */
 345 };
 346
 347 #define BTUSB_MAX_ISOC_FRAMES   10
 348
 349 #define BTUSB_INTR_RUNNING      0
 350 #define BTUSB_BULK_RUNNING      1
 351 #define BTUSB_ISOC_RUNNING      2
 352 #define BTUSB_SUSPENDING        3
 353 #define BTUSB_DID_ISO_RESUME    4
 354 #define BTUSB_BOOTLOADER        5
 355 #define BTUSB_DOWNLOADING       6
 356 #define BTUSB_FIRMWARE_LOADED   7
 357 #define BTUSB_FIRMWARE_FAILED   8
 358 #define BTUSB_BOOTING           9
 359 #define BTUSB_RESET_RESUME      10
 360 #define BTUSB_DIAG_RUNNING      11
 361
 362 struct btusb_data {
 363         struct hci_dev       *hdev;
 364         struct usb_device    *udev;
 365         struct usb_interface *intf;
 366         struct usb_interface *isoc;
 367         struct usb_interface *diag;
 368
 369         unsigned long flags;
 370
 371         struct work_struct work;
 372         struct work_struct waker;
 373
 374         struct usb_anchor deferred;
 375         struct usb_anchor tx_anchor;
 376         int tx_in_flight;
 377         spinlock_t txlock;
 378
 379         struct usb_anchor intr_anchor;
 380         struct usb_anchor bulk_anchor;
 381         struct usb_anchor isoc_anchor;
 382         struct usb_anchor diag_anchor;
 383         spinlock_t rxlock;
 384
 385         struct sk_buff *evt_skb;
 386         struct sk_buff *acl_skb;
 387         struct sk_buff *sco_skb;
 388
 389         struct usb_endpoint_descriptor *intr_ep;
 390         struct usb_endpoint_descriptor *bulk_tx_ep;
 391         struct usb_endpoint_descriptor *bulk_rx_ep;
 392         struct usb_endpoint_descriptor *isoc_tx_ep;
 393         struct usb_endpoint_descriptor *isoc_rx_ep;
 394         struct usb_endpoint_descriptor *diag_tx_ep;
 395         struct usb_endpoint_descriptor *diag_rx_ep;
 396
 397         __u8 cmdreq_type;
 398         __u8 cmdreq;
 399
 400         unsigned int sco_num;
 401         int isoc_altsetting;
 402         int suspend_count;
 403
 404         int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
 405         int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
 406
 407         int (*setup_on_usb)(struct hci_dev *hdev);
 408 };
 409
 410 static inline void btusb_free_frags(struct btusb_data *data)
 411 {
 412         unsigned long flags;
 413
 414         spin_lock_irqsave(&data->rxlock, flags);
 415
 416         kfree_skb(data->evt_skb);
 417         data->evt_skb = NULL;
 418
 419         kfree_skb(data->acl_skb);
 420         data->acl_skb = NULL;
 421
 422         kfree_skb(data->sco_skb);
 423         data->sco_skb = NULL;
 424
 425         spin_unlock_irqrestore(&data->rxlock, flags);
 426 }
 427
 428 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
 429 {
 430         struct sk_buff *skb;
 431         int err = 0;
 432
 433         spin_lock(&data->rxlock);
 434         skb = data->evt_skb;
 435
 436         while (count) {
 437                 int len;
 438
 439                 if (!skb) {
 440                         skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
 441                         if (!skb) {
 442                                 err = -ENOMEM;
 443                                 break;
 444                         }
 445
 446                         bt_cb(skb)->pkt_type = HCI_EVENT_PKT;
 447                         bt_cb(skb)->expect = HCI_EVENT_HDR_SIZE;
 448                 }
 449
 450                 len = min_t(uint, bt_cb(skb)->expect, count);
 451                 memcpy(skb_put(skb, len), buffer, len);
 452
 453                 count -= len;
 454                 buffer += len;
 455                 bt_cb(skb)->expect -= len;
 456
 457                 if (skb->len == HCI_EVENT_HDR_SIZE) {
 458                         /* Complete event header */
 459                         bt_cb(skb)->expect = hci_event_hdr(skb)->plen;
 460
 461                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 462                                 kfree_skb(skb);
 463                                 skb = NULL;
 464
 465                                 err = -EILSEQ;
 466                                 break;
 467                         }
 468                 }
 469
 470                 if (bt_cb(skb)->expect == 0) {
 471                         /* Complete frame */
 472                         data->recv_event(data->hdev, skb);
 473                         skb = NULL;
 474                 }
 475         }
 476
 477         data->evt_skb = skb;
 478         spin_unlock(&data->rxlock);
 479
 480         return err;
 481 }
 482
 483 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
 484 {
 485         struct sk_buff *skb;
 486         int err = 0;
 487
 488         spin_lock(&data->rxlock);
 489         skb = data->acl_skb;
 490
 491         while (count) {
 492                 int len;
 493
 494                 if (!skb) {
 495                         skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
 496                         if (!skb) {
 497                                 err = -ENOMEM;
 498                                 break;
 499                         }
 500
 501                         bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT;
 502                         bt_cb(skb)->expect = HCI_ACL_HDR_SIZE;
 503                 }
 504
 505                 len = min_t(uint, bt_cb(skb)->expect, count);
 506                 memcpy(skb_put(skb, len), buffer, len);
 507
 508                 count -= len;
 509                 buffer += len;
 510                 bt_cb(skb)->expect -= len;
 511
 512                 if (skb->len == HCI_ACL_HDR_SIZE) {
 513                         __le16 dlen = hci_acl_hdr(skb)->dlen;
 514
 515                         /* Complete ACL header */
 516                         bt_cb(skb)->expect = __le16_to_cpu(dlen);
 517
 518                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 519                                 kfree_skb(skb);
 520                                 skb = NULL;
 521
 522                                 err = -EILSEQ;
 523                                 break;
 524                         }
 525                 }
 526
 527                 if (bt_cb(skb)->expect == 0) {
 528                         /* Complete frame */
 529                         hci_recv_frame(data->hdev, skb);
 530                         skb = NULL;
 531                 }
 532         }
 533
 534         data->acl_skb = skb;
 535         spin_unlock(&data->rxlock);
 536
 537         return err;
 538 }
 539
 540 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
 541 {
 542         struct sk_buff *skb;
 543         int err = 0;
 544
 545         spin_lock(&data->rxlock);
 546         skb = data->sco_skb;
 547
 548         while (count) {
 549                 int len;
 550
 551                 if (!skb) {
 552                         skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
 553                         if (!skb) {
 554                                 err = -ENOMEM;
 555                                 break;
 556                         }
 557
 558                         bt_cb(skb)->pkt_type = HCI_SCODATA_PKT;
 559                         bt_cb(skb)->expect = HCI_SCO_HDR_SIZE;
 560                 }
 561
 562                 len = min_t(uint, bt_cb(skb)->expect, count);
 563                 memcpy(skb_put(skb, len), buffer, len);
 564
 565                 count -= len;
 566                 buffer += len;
 567                 bt_cb(skb)->expect -= len;
 568
 569                 if (skb->len == HCI_SCO_HDR_SIZE) {
 570                         /* Complete SCO header */
 571                         bt_cb(skb)->expect = hci_sco_hdr(skb)->dlen;
 572
 573                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 574                                 kfree_skb(skb);
 575                                 skb = NULL;
 576
 577                                 err = -EILSEQ;
 578                                 break;
 579                         }
 580                 }
 581
 582                 if (bt_cb(skb)->expect == 0) {
 583                         /* Complete frame */
 584                         hci_recv_frame(data->hdev, skb);
 585                         skb = NULL;
 586                 }
 587         }
 588
 589         data->sco_skb = skb;
 590         spin_unlock(&data->rxlock);
 591
 592         return err;
 593 }
 594
 595 static void btusb_intr_complete(struct urb *urb)
 596 {
 597         struct hci_dev *hdev = urb->context;
 598         struct btusb_data *data = hci_get_drvdata(hdev);
 599         int err;
 600
 601         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 602                urb->actual_length);
 603
 604         if (!test_bit(HCI_RUNNING, &hdev->flags))
 605                 return;
 606
 607         if (urb->status == 0) {
 608                 hdev->stat.byte_rx += urb->actual_length;
 609
 610                 if (btusb_recv_intr(data, urb->transfer_buffer,
 611                                     urb->actual_length) < 0) {
 612                         BT_ERR("%s corrupted event packet", hdev->name);
 613                         hdev->stat.err_rx++;
 614                 }
 615         } else if (urb->status == -ENOENT) {
 616                 /* Avoid suspend failed when usb_kill_urb */
 617                 return;
 618         }
 619
 620         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 621                 return;
 622
 623         usb_mark_last_busy(data->udev);
 624         usb_anchor_urb(urb, &data->intr_anchor);
 625
 626         err = usb_submit_urb(urb, GFP_ATOMIC);
 627         if (err < 0) {
 628                 /* -EPERM: urb is being killed;
 629                  * -ENODEV: device got disconnected */
 630                 if (err != -EPERM && err != -ENODEV)
 631                         BT_ERR("%s urb %p failed to resubmit (%d)",
 632                                hdev->name, urb, -err);
 633                 usb_unanchor_urb(urb);
 634         }
 635 }
 636
 637 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 638 {
 639         struct btusb_data *data = hci_get_drvdata(hdev);
 640         struct urb *urb;
 641         unsigned char *buf;
 642         unsigned int pipe;
 643         int err, size;
 644
 645         BT_DBG("%s", hdev->name);
 646
 647         if (!data->intr_ep)
 648                 return -ENODEV;
 649
 650         urb = usb_alloc_urb(0, mem_flags);
 651         if (!urb)
 652                 return -ENOMEM;
 653
 654         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 655
 656         buf = kmalloc(size, mem_flags);
 657         if (!buf) {
 658                 usb_free_urb(urb);
 659                 return -ENOMEM;
 660         }
 661
 662         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 663
 664         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 665                          btusb_intr_complete, hdev, data->intr_ep->bInterval);
 666
 667         urb->transfer_flags |= URB_FREE_BUFFER;
 668
 669         usb_anchor_urb(urb, &data->intr_anchor);
 670
 671         err = usb_submit_urb(urb, mem_flags);
 672         if (err < 0) {
 673                 if (err != -EPERM && err != -ENODEV)
 674                         BT_ERR("%s urb %p submission failed (%d)",
 675                                hdev->name, urb, -err);
 676                 usb_unanchor_urb(urb);
 677         }
 678
 679         usb_free_urb(urb);
 680
 681         return err;
 682 }
 683
 684 static void btusb_bulk_complete(struct urb *urb)
 685 {
 686         struct hci_dev *hdev = urb->context;
 687         struct btusb_data *data = hci_get_drvdata(hdev);
 688         int err;
 689
 690         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 691                urb->actual_length);
 692
 693         if (!test_bit(HCI_RUNNING, &hdev->flags))
 694                 return;
 695
 696         if (urb->status == 0) {
 697                 hdev->stat.byte_rx += urb->actual_length;
 698
 699                 if (data->recv_bulk(data, urb->transfer_buffer,
 700                                     urb->actual_length) < 0) {
 701                         BT_ERR("%s corrupted ACL packet", hdev->name);
 702                         hdev->stat.err_rx++;
 703                 }
 704         } else if (urb->status == -ENOENT) {
 705                 /* Avoid suspend failed when usb_kill_urb */
 706                 return;
 707         }
 708
 709         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 710                 return;
 711
 712         usb_anchor_urb(urb, &data->bulk_anchor);
 713         usb_mark_last_busy(data->udev);
 714
 715         err = usb_submit_urb(urb, GFP_ATOMIC);
 716         if (err < 0) {
 717                 /* -EPERM: urb is being killed;
 718                  * -ENODEV: device got disconnected */
 719                 if (err != -EPERM && err != -ENODEV)
 720                         BT_ERR("%s urb %p failed to resubmit (%d)",
 721                                hdev->name, urb, -err);
 722                 usb_unanchor_urb(urb);
 723         }
 724 }
 725
 726 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 727 {
 728         struct btusb_data *data = hci_get_drvdata(hdev);
 729         struct urb *urb;
 730         unsigned char *buf;
 731         unsigned int pipe;
 732         int err, size = HCI_MAX_FRAME_SIZE;
 733
 734         BT_DBG("%s", hdev->name);
 735
 736         if (!data->bulk_rx_ep)
 737                 return -ENODEV;
 738
 739         urb = usb_alloc_urb(0, mem_flags);
 740         if (!urb)
 741                 return -ENOMEM;
 742
 743         buf = kmalloc(size, mem_flags);
 744         if (!buf) {
 745                 usb_free_urb(urb);
 746                 return -ENOMEM;
 747         }
 748
 749         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 750
 751         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
 752                           btusb_bulk_complete, hdev);
 753
 754         urb->transfer_flags |= URB_FREE_BUFFER;
 755
 756         usb_mark_last_busy(data->udev);
 757         usb_anchor_urb(urb, &data->bulk_anchor);
 758
 759         err = usb_submit_urb(urb, mem_flags);
 760         if (err < 0) {
 761                 if (err != -EPERM && err != -ENODEV)
 762                         BT_ERR("%s urb %p submission failed (%d)",
 763                                hdev->name, urb, -err);
 764                 usb_unanchor_urb(urb);
 765         }
 766
 767         usb_free_urb(urb);
 768
 769         return err;
 770 }
 771
 772 static void btusb_isoc_complete(struct urb *urb)
 773 {
 774         struct hci_dev *hdev = urb->context;
 775         struct btusb_data *data = hci_get_drvdata(hdev);
 776         int i, err;
 777
 778         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 779                urb->actual_length);
 780
 781         if (!test_bit(HCI_RUNNING, &hdev->flags))
 782                 return;
 783
 784         if (urb->status == 0) {
 785                 for (i = 0; i < urb->number_of_packets; i++) {
 786                         unsigned int offset = urb->iso_frame_desc[i].offset;
 787                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 788
 789                         if (urb->iso_frame_desc[i].status)
 790                                 continue;
 791
 792                         hdev->stat.byte_rx += length;
 793
 794                         if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
 795                                             length) < 0) {
 796                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 797                                 hdev->stat.err_rx++;
 798                         }
 799                 }
 800         } else if (urb->status == -ENOENT) {
 801                 /* Avoid suspend failed when usb_kill_urb */
 802                 return;
 803         }
 804
 805         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 806                 return;
 807
 808         usb_anchor_urb(urb, &data->isoc_anchor);
 809
 810         err = usb_submit_urb(urb, GFP_ATOMIC);
 811         if (err < 0) {
 812                 /* -EPERM: urb is being killed;
 813                  * -ENODEV: device got disconnected */
 814                 if (err != -EPERM && err != -ENODEV)
 815                         BT_ERR("%s urb %p failed to resubmit (%d)",
 816                                hdev->name, urb, -err);
 817                 usb_unanchor_urb(urb);
 818         }
 819 }
 820
 821 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 822 {
 823         int i, offset = 0;
 824
 825         BT_DBG("len %d mtu %d", len, mtu);
 826
 827         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 828                                         i++, offset += mtu, len -= mtu) {
 829                 urb->iso_frame_desc[i].offset = offset;
 830                 urb->iso_frame_desc[i].length = mtu;
 831         }
 832
 833         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 834                 urb->iso_frame_desc[i].offset = offset;
 835                 urb->iso_frame_desc[i].length = len;
 836                 i++;
 837         }
 838
 839         urb->number_of_packets = i;
 840 }
 841
 842 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 843 {
 844         struct btusb_data *data = hci_get_drvdata(hdev);
 845         struct urb *urb;
 846         unsigned char *buf;
 847         unsigned int pipe;
 848         int err, size;
 849
 850         BT_DBG("%s", hdev->name);
 851
 852         if (!data->isoc_rx_ep)
 853                 return -ENODEV;
 854
 855         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 856         if (!urb)
 857                 return -ENOMEM;
 858
 859         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 860                                                 BTUSB_MAX_ISOC_FRAMES;
 861
 862         buf = kmalloc(size, mem_flags);
 863         if (!buf) {
 864                 usb_free_urb(urb);
 865                 return -ENOMEM;
 866         }
 867
 868         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 869
 870         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 871                          hdev, data->isoc_rx_ep->bInterval);
 872
 873         urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
 874
 875         __fill_isoc_descriptor(urb, size,
 876                                le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 877
 878         usb_anchor_urb(urb, &data->isoc_anchor);
 879
 880         err = usb_submit_urb(urb, mem_flags);
 881         if (err < 0) {
 882                 if (err != -EPERM && err != -ENODEV)
 883                         BT_ERR("%s urb %p submission failed (%d)",
 884                                hdev->name, urb, -err);
 885                 usb_unanchor_urb(urb);
 886         }
 887
 888         usb_free_urb(urb);
 889
 890         return err;
 891 }
 892
 893 static void btusb_diag_complete(struct urb *urb)
 894 {
 895         struct hci_dev *hdev = urb->context;
 896         struct btusb_data *data = hci_get_drvdata(hdev);
 897         int err;
 898
 899         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 900                urb->actual_length);
 901
 902         if (urb->status == 0) {
 903                 struct sk_buff *skb;
 904
 905                 skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC);
 906                 if (skb) {
 907                         memcpy(skb_put(skb, urb->actual_length),
 908                                urb->transfer_buffer, urb->actual_length);
 909                         hci_recv_diag(hdev, skb);
 910                 }
 911         } else if (urb->status == -ENOENT) {
 912                 /* Avoid suspend failed when usb_kill_urb */
 913                 return;
 914         }
 915
 916         if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags))
 917                 return;
 918
 919         usb_anchor_urb(urb, &data->diag_anchor);
 920         usb_mark_last_busy(data->udev);
 921
 922         err = usb_submit_urb(urb, GFP_ATOMIC);
 923         if (err < 0) {
 924                 /* -EPERM: urb is being killed;
 925                  * -ENODEV: device got disconnected */
 926                 if (err != -EPERM && err != -ENODEV)
 927                         BT_ERR("%s urb %p failed to resubmit (%d)",
 928                                hdev->name, urb, -err);
 929                 usb_unanchor_urb(urb);
 930         }
 931 }
 932
 933 static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags)
 934 {
 935         struct btusb_data *data = hci_get_drvdata(hdev);
 936         struct urb *urb;
 937         unsigned char *buf;
 938         unsigned int pipe;
 939         int err, size = HCI_MAX_FRAME_SIZE;
 940
 941         BT_DBG("%s", hdev->name);
 942
 943         if (!data->diag_rx_ep)
 944                 return -ENODEV;
 945
 946         urb = usb_alloc_urb(0, mem_flags);
 947         if (!urb)
 948                 return -ENOMEM;
 949
 950         buf = kmalloc(size, mem_flags);
 951         if (!buf) {
 952                 usb_free_urb(urb);
 953                 return -ENOMEM;
 954         }
 955
 956         pipe = usb_rcvbulkpipe(data->udev, data->diag_rx_ep->bEndpointAddress);
 957
 958         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
 959                           btusb_diag_complete, hdev);
 960
 961         urb->transfer_flags |= URB_FREE_BUFFER;
 962
 963         usb_mark_last_busy(data->udev);
 964         usb_anchor_urb(urb, &data->diag_anchor);
 965
 966         err = usb_submit_urb(urb, mem_flags);
 967         if (err < 0) {
 968                 if (err != -EPERM && err != -ENODEV)
 969                         BT_ERR("%s urb %p submission failed (%d)",
 970                                hdev->name, urb, -err);
 971                 usb_unanchor_urb(urb);
 972         }
 973
 974         usb_free_urb(urb);
 975
 976         return err;
 977 }
 978
 979 static void btusb_tx_complete(struct urb *urb)
 980 {
 981         struct sk_buff *skb = urb->context;
 982         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
 983         struct btusb_data *data = hci_get_drvdata(hdev);
 984
 985         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 986                urb->actual_length);
 987
 988         if (!test_bit(HCI_RUNNING, &hdev->flags))
 989                 goto done;
 990
 991         if (!urb->status)
 992                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 993         else
 994                 hdev->stat.err_tx++;
 995
 996 done:
 997         spin_lock(&data->txlock);
 998         data->tx_in_flight--;
 999         spin_unlock(&data->txlock);
1000
1001         kfree(urb->setup_packet);
1002
1003         kfree_skb(skb);
1004 }
1005
1006 static void btusb_isoc_tx_complete(struct urb *urb)
1007 {
1008         struct sk_buff *skb = urb->context;
1009         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1010
1011         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1012                urb->actual_length);
1013
1014         if (!test_bit(HCI_RUNNING, &hdev->flags))
1015                 goto done;
1016
1017         if (!urb->status)
1018                 hdev->stat.byte_tx += urb->transfer_buffer_length;
1019         else
1020                 hdev->stat.err_tx++;
1021
1022 done:
1023         kfree(urb->setup_packet);
1024
1025         kfree_skb(skb);
1026 }
1027
1028 static int btusb_open(struct hci_dev *hdev)
1029 {
1030         struct btusb_data *data = hci_get_drvdata(hdev);
1031         int err;
1032
1033         BT_DBG("%s", hdev->name);
1034
1035         /* Patching USB firmware files prior to starting any URBs of HCI path
1036          * It is more safe to use USB bulk channel for downloading USB patch
1037          */
1038         if (data->setup_on_usb) {
1039                 err = data->setup_on_usb(hdev);
1040                 if (err < 0)
1041                         return err;
1042         }
1043
1044         err = usb_autopm_get_interface(data->intf);
1045         if (err < 0)
1046                 return err;
1047
1048         data->intf->needs_remote_wakeup = 1;
1049
1050         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
1051                 goto done;
1052
1053         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
1054         if (err < 0)
1055                 goto failed;
1056
1057         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1058         if (err < 0) {
1059                 usb_kill_anchored_urbs(&data->intr_anchor);
1060                 goto failed;
1061         }
1062
1063         set_bit(BTUSB_BULK_RUNNING, &data->flags);
1064         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1065
1066         if (data->diag) {
1067                 if (!btusb_submit_diag_urb(hdev, GFP_KERNEL))
1068                         set_bit(BTUSB_DIAG_RUNNING, &data->flags);
1069         }
1070
1071 done:
1072         usb_autopm_put_interface(data->intf);
1073         return 0;
1074
1075 failed:
1076         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1077         usb_autopm_put_interface(data->intf);
1078         return err;
1079 }
1080
1081 static void btusb_stop_traffic(struct btusb_data *data)
1082 {
1083         usb_kill_anchored_urbs(&data->intr_anchor);
1084         usb_kill_anchored_urbs(&data->bulk_anchor);
1085         usb_kill_anchored_urbs(&data->isoc_anchor);
1086         usb_kill_anchored_urbs(&data->diag_anchor);
1087 }
1088
1089 static int btusb_close(struct hci_dev *hdev)
1090 {
1091         struct btusb_data *data = hci_get_drvdata(hdev);
1092         int err;
1093
1094         BT_DBG("%s", hdev->name);
1095
1096         cancel_work_sync(&data->work);
1097         cancel_work_sync(&data->waker);
1098
1099         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1100         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1101         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1102         clear_bit(BTUSB_DIAG_RUNNING, &data->flags);
1103
1104         btusb_stop_traffic(data);
1105         btusb_free_frags(data);
1106
1107         err = usb_autopm_get_interface(data->intf);
1108         if (err < 0)
1109                 goto failed;
1110
1111         data->intf->needs_remote_wakeup = 0;
1112         usb_autopm_put_interface(data->intf);
1113
1114 failed:
1115         usb_scuttle_anchored_urbs(&data->deferred);
1116         return 0;
1117 }
1118
1119 static int btusb_flush(struct hci_dev *hdev)
1120 {
1121         struct btusb_data *data = hci_get_drvdata(hdev);
1122
1123         BT_DBG("%s", hdev->name);
1124
1125         usb_kill_anchored_urbs(&data->tx_anchor);
1126         btusb_free_frags(data);
1127
1128         return 0;
1129 }
1130
1131 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
1132 {
1133         struct btusb_data *data = hci_get_drvdata(hdev);
1134         struct usb_ctrlrequest *dr;
1135         struct urb *urb;
1136         unsigned int pipe;
1137
1138         urb = usb_alloc_urb(0, GFP_KERNEL);
1139         if (!urb)
1140                 return ERR_PTR(-ENOMEM);
1141
1142         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
1143         if (!dr) {
1144                 usb_free_urb(urb);
1145                 return ERR_PTR(-ENOMEM);
1146         }
1147
1148         dr->bRequestType = data->cmdreq_type;
1149         dr->bRequest     = data->cmdreq;
1150         dr->wIndex       = 0;
1151         dr->wValue       = 0;
1152         dr->wLength      = __cpu_to_le16(skb->len);
1153
1154         pipe = usb_sndctrlpipe(data->udev, 0x00);
1155
1156         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
1157                              skb->data, skb->len, btusb_tx_complete, skb);
1158
1159         skb->dev = (void *)hdev;
1160
1161         return urb;
1162 }
1163
1164 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
1165 {
1166         struct btusb_data *data = hci_get_drvdata(hdev);
1167         struct urb *urb;
1168         unsigned int pipe;
1169
1170         if (!data->bulk_tx_ep)
1171                 return ERR_PTR(-ENODEV);
1172
1173         urb = usb_alloc_urb(0, GFP_KERNEL);
1174         if (!urb)
1175                 return ERR_PTR(-ENOMEM);
1176
1177         pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1178
1179         usb_fill_bulk_urb(urb, data->udev, pipe,
1180                           skb->data, skb->len, btusb_tx_complete, skb);
1181
1182         skb->dev = (void *)hdev;
1183
1184         return urb;
1185 }
1186
1187 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1188 {
1189         struct btusb_data *data = hci_get_drvdata(hdev);
1190         struct urb *urb;
1191         unsigned int pipe;
1192
1193         if (!data->isoc_tx_ep)
1194                 return ERR_PTR(-ENODEV);
1195
1196         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1197         if (!urb)
1198                 return ERR_PTR(-ENOMEM);
1199
1200         pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1201
1202         usb_fill_int_urb(urb, data->udev, pipe,
1203                          skb->data, skb->len, btusb_isoc_tx_complete,
1204                          skb, data->isoc_tx_ep->bInterval);
1205
1206         urb->transfer_flags  = URB_ISO_ASAP;
1207
1208         __fill_isoc_descriptor(urb, skb->len,
1209                                le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1210
1211         skb->dev = (void *)hdev;
1212
1213         return urb;
1214 }
1215
1216 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1217 {
1218         struct btusb_data *data = hci_get_drvdata(hdev);
1219         int err;
1220
1221         usb_anchor_urb(urb, &data->tx_anchor);
1222
1223         err = usb_submit_urb(urb, GFP_KERNEL);
1224         if (err < 0) {
1225                 if (err != -EPERM && err != -ENODEV)
1226                         BT_ERR("%s urb %p submission failed (%d)",
1227                                hdev->name, urb, -err);
1228                 kfree(urb->setup_packet);
1229                 usb_unanchor_urb(urb);
1230         } else {
1231                 usb_mark_last_busy(data->udev);
1232         }
1233
1234         usb_free_urb(urb);
1235         return err;
1236 }
1237
1238 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1239 {
1240         struct btusb_data *data = hci_get_drvdata(hdev);
1241         unsigned long flags;
1242         bool suspending;
1243
1244         spin_lock_irqsave(&data->txlock, flags);
1245         suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1246         if (!suspending)
1247                 data->tx_in_flight++;
1248         spin_unlock_irqrestore(&data->txlock, flags);
1249
1250         if (!suspending)
1251                 return submit_tx_urb(hdev, urb);
1252
1253         usb_anchor_urb(urb, &data->deferred);
1254         schedule_work(&data->waker);
1255
1256         usb_free_urb(urb);
1257         return 0;
1258 }
1259
1260 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1261 {
1262         struct urb *urb;
1263
1264         BT_DBG("%s", hdev->name);
1265
1266         switch (bt_cb(skb)->pkt_type) {
1267         case HCI_COMMAND_PKT:
1268                 urb = alloc_ctrl_urb(hdev, skb);
1269                 if (IS_ERR(urb))
1270                         return PTR_ERR(urb);
1271
1272                 hdev->stat.cmd_tx++;
1273                 return submit_or_queue_tx_urb(hdev, urb);
1274
1275         case HCI_ACLDATA_PKT:
1276                 urb = alloc_bulk_urb(hdev, skb);
1277                 if (IS_ERR(urb))
1278                         return PTR_ERR(urb);
1279
1280                 hdev->stat.acl_tx++;
1281                 return submit_or_queue_tx_urb(hdev, urb);
1282
1283         case HCI_SCODATA_PKT:
1284                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1285                         return -ENODEV;
1286
1287                 urb = alloc_isoc_urb(hdev, skb);
1288                 if (IS_ERR(urb))
1289                         return PTR_ERR(urb);
1290
1291                 hdev->stat.sco_tx++;
1292                 return submit_tx_urb(hdev, urb);
1293         }
1294
1295         return -EILSEQ;
1296 }
1297
1298 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1299 {
1300         struct btusb_data *data = hci_get_drvdata(hdev);
1301
1302         BT_DBG("%s evt %d", hdev->name, evt);
1303
1304         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1305                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1306                 schedule_work(&data->work);
1307         }
1308 }
1309
1310 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1311 {
1312         struct btusb_data *data = hci_get_drvdata(hdev);
1313         struct usb_interface *intf = data->isoc;
1314         struct usb_endpoint_descriptor *ep_desc;
1315         int i, err;
1316
1317         if (!data->isoc)
1318                 return -ENODEV;
1319
1320         err = usb_set_interface(data->udev, 1, altsetting);
1321         if (err < 0) {
1322                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
1323                 return err;
1324         }
1325
1326         data->isoc_altsetting = altsetting;
1327
1328         data->isoc_tx_ep = NULL;
1329         data->isoc_rx_ep = NULL;
1330
1331         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1332                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1333
1334                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1335                         data->isoc_tx_ep = ep_desc;
1336                         continue;
1337                 }
1338
1339                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1340                         data->isoc_rx_ep = ep_desc;
1341                         continue;
1342                 }
1343         }
1344
1345         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1346                 BT_ERR("%s invalid SCO descriptors", hdev->name);
1347                 return -ENODEV;
1348         }
1349
1350         return 0;
1351 }
1352
1353 static void btusb_work(struct work_struct *work)
1354 {
1355         struct btusb_data *data = container_of(work, struct btusb_data, work);
1356         struct hci_dev *hdev = data->hdev;
1357         int new_alts;
1358         int err;
1359
1360         if (data->sco_num > 0) {
1361                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1362                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1363                         if (err < 0) {
1364                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1365                                 usb_kill_anchored_urbs(&data->isoc_anchor);
1366                                 return;
1367                         }
1368
1369                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1370                 }
1371
1372                 if (hdev->voice_setting & 0x0020) {
1373                         static const int alts[3] = { 2, 4, 5 };
1374
1375                         new_alts = alts[data->sco_num - 1];
1376                 } else {
1377                         new_alts = data->sco_num;
1378                 }
1379
1380                 if (data->isoc_altsetting != new_alts) {
1381                         unsigned long flags;
1382
1383                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1384                         usb_kill_anchored_urbs(&data->isoc_anchor);
1385
1386                         /* When isochronous alternate setting needs to be
1387                          * changed, because SCO connection has been added
1388                          * or removed, a packet fragment may be left in the
1389                          * reassembling state. This could lead to wrongly
1390                          * assembled fragments.
1391                          *
1392                          * Clear outstanding fragment when selecting a new
1393                          * alternate setting.
1394                          */
1395                         spin_lock_irqsave(&data->rxlock, flags);
1396                         kfree_skb(data->sco_skb);
1397                         data->sco_skb = NULL;
1398                         spin_unlock_irqrestore(&data->rxlock, flags);
1399
1400                         if (__set_isoc_interface(hdev, new_alts) < 0)
1401                                 return;
1402                 }
1403
1404                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1405                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1406                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1407                         else
1408                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1409                 }
1410         } else {
1411                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1412                 usb_kill_anchored_urbs(&data->isoc_anchor);
1413
1414                 __set_isoc_interface(hdev, 0);
1415                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1416                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1417         }
1418 }
1419
1420 static void btusb_waker(struct work_struct *work)
1421 {
1422         struct btusb_data *data = container_of(work, struct btusb_data, waker);
1423         int err;
1424
1425         err = usb_autopm_get_interface(data->intf);
1426         if (err < 0)
1427                 return;
1428
1429         usb_autopm_put_interface(data->intf);
1430 }
1431
1432 static int btusb_setup_bcm92035(struct hci_dev *hdev)
1433 {
1434         struct sk_buff *skb;
1435         u8 val = 0x00;
1436
1437         BT_DBG("%s", hdev->name);
1438
1439         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1440         if (IS_ERR(skb))
1441                 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
1442         else
1443                 kfree_skb(skb);
1444
1445         return 0;
1446 }
1447
1448 static int btusb_setup_csr(struct hci_dev *hdev)
1449 {
1450         struct hci_rp_read_local_version *rp;
1451         struct sk_buff *skb;
1452
1453         BT_DBG("%s", hdev->name);
1454
1455         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1456                              HCI_INIT_TIMEOUT);
1457         if (IS_ERR(skb)) {
1458                 int err = PTR_ERR(skb);
1459                 BT_ERR("%s: CSR: Local version failed (%d)", hdev->name, err);
1460                 return err;
1461         }
1462
1463         if (skb->len != sizeof(struct hci_rp_read_local_version)) {
1464                 BT_ERR("%s: CSR: Local version length mismatch", hdev->name);
1465                 kfree_skb(skb);
1466                 return -EIO;
1467         }
1468
1469         rp = (struct hci_rp_read_local_version *)skb->data;
1470
1471         /* Detect controllers which aren't real CSR ones. */
1472         if (le16_to_cpu(rp->manufacturer) != 10 ||
1473             le16_to_cpu(rp->lmp_subver) == 0x0c5c) {
1474                 /* Clear the reset quirk since this is not an actual
1475                  * early Bluetooth 1.1 device from CSR.
1476                  */
1477                 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1478
1479                 /* These fake CSR controllers have all a broken
1480                  * stored link key handling and so just disable it.
1481                  */
1482                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
1483         }
1484
1485         kfree_skb(skb);
1486
1487         return 0;
1488 }
1489
1490 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1491                                                        struct intel_version *ver)
1492 {
1493         const struct firmware *fw;
1494         char fwname[64];
1495         int ret;
1496
1497         snprintf(fwname, sizeof(fwname),
1498                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1499                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
1500                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1501                  ver->fw_build_ww, ver->fw_build_yy);
1502
1503         ret = request_firmware(&fw, fwname, &hdev->dev);
1504         if (ret < 0) {
1505                 if (ret == -EINVAL) {
1506                         BT_ERR("%s Intel firmware file request failed (%d)",
1507                                hdev->name, ret);
1508                         return NULL;
1509                 }
1510
1511                 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1512                        hdev->name, fwname, ret);
1513
1514                 /* If the correct firmware patch file is not found, use the
1515                  * default firmware patch file instead
1516                  */
1517                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1518                          ver->hw_platform, ver->hw_variant);
1519                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1520                         BT_ERR("%s failed to open default Intel fw file: %s",
1521                                hdev->name, fwname);
1522                         return NULL;
1523                 }
1524         }
1525
1526         BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1527
1528         return fw;
1529 }
1530
1531 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1532                                       const struct firmware *fw,
1533                                       const u8 **fw_ptr, int *disable_patch)
1534 {
1535         struct sk_buff *skb;
1536         struct hci_command_hdr *cmd;
1537         const u8 *cmd_param;
1538         struct hci_event_hdr *evt = NULL;
1539         const u8 *evt_param = NULL;
1540         int remain = fw->size - (*fw_ptr - fw->data);
1541
1542         /* The first byte indicates the types of the patch command or event.
1543          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1544          * in the current firmware buffer doesn't start with 0x01 or
1545          * the size of remain buffer is smaller than HCI command header,
1546          * the firmware file is corrupted and it should stop the patching
1547          * process.
1548          */
1549         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1550                 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1551                 return -EINVAL;
1552         }
1553         (*fw_ptr)++;
1554         remain--;
1555
1556         cmd = (struct hci_command_hdr *)(*fw_ptr);
1557         *fw_ptr += sizeof(*cmd);
1558         remain -= sizeof(*cmd);
1559
1560         /* Ensure that the remain firmware data is long enough than the length
1561          * of command parameter. If not, the firmware file is corrupted.
1562          */
1563         if (remain < cmd->plen) {
1564                 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1565                 return -EFAULT;
1566         }
1567
1568         /* If there is a command that loads a patch in the firmware
1569          * file, then enable the patch upon success, otherwise just
1570          * disable the manufacturer mode, for example patch activation
1571          * is not required when the default firmware patch file is used
1572          * because there are no patch data to load.
1573          */
1574         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1575                 *disable_patch = 0;
1576
1577         cmd_param = *fw_ptr;
1578         *fw_ptr += cmd->plen;
1579         remain -= cmd->plen;
1580
1581         /* This reads the expected events when the above command is sent to the
1582          * device. Some vendor commands expects more than one events, for
1583          * example command status event followed by vendor specific event.
1584          * For this case, it only keeps the last expected event. so the command
1585          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1586          * last expected event.
1587          */
1588         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1589                 (*fw_ptr)++;
1590                 remain--;
1591
1592                 evt = (struct hci_event_hdr *)(*fw_ptr);
1593                 *fw_ptr += sizeof(*evt);
1594                 remain -= sizeof(*evt);
1595
1596                 if (remain < evt->plen) {
1597                         BT_ERR("%s Intel fw corrupted: invalid evt len",
1598                                hdev->name);
1599                         return -EFAULT;
1600                 }
1601
1602                 evt_param = *fw_ptr;
1603                 *fw_ptr += evt->plen;
1604                 remain -= evt->plen;
1605         }
1606
1607         /* Every HCI commands in the firmware file has its correspond event.
1608          * If event is not found or remain is smaller than zero, the firmware
1609          * file is corrupted.
1610          */
1611         if (!evt || !evt_param || remain < 0) {
1612                 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1613                 return -EFAULT;
1614         }
1615
1616         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1617                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1618         if (IS_ERR(skb)) {
1619                 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1620                        hdev->name, cmd->opcode, PTR_ERR(skb));
1621                 return PTR_ERR(skb);
1622         }
1623
1624         /* It ensures that the returned event matches the event data read from
1625          * the firmware file. At fist, it checks the length and then
1626          * the contents of the event.
1627          */
1628         if (skb->len != evt->plen) {
1629                 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1630                        le16_to_cpu(cmd->opcode));
1631                 kfree_skb(skb);
1632                 return -EFAULT;
1633         }
1634
1635         if (memcmp(skb->data, evt_param, evt->plen)) {
1636                 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1637                        hdev->name, le16_to_cpu(cmd->opcode));
1638                 kfree_skb(skb);
1639                 return -EFAULT;
1640         }
1641         kfree_skb(skb);
1642
1643         return 0;
1644 }
1645
1646 static int btusb_setup_intel(struct hci_dev *hdev)
1647 {
1648         struct sk_buff *skb;
1649         const struct firmware *fw;
1650         const u8 *fw_ptr;
1651         int disable_patch;
1652         struct intel_version *ver;
1653
1654         const u8 mfg_enable[] = { 0x01, 0x00 };
1655         const u8 mfg_disable[] = { 0x00, 0x00 };
1656         const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
1657         const u8 mfg_reset_activate[] = { 0x00, 0x02 };
1658
1659         BT_DBG("%s", hdev->name);
1660
1661         /* The controller has a bug with the first HCI command sent to it
1662          * returning number of completed commands as zero. This would stall the
1663          * command processing in the Bluetooth core.
1664          *
1665          * As a workaround, send HCI Reset command first which will reset the
1666          * number of completed commands and allow normal command processing
1667          * from now on.
1668          */
1669         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1670         if (IS_ERR(skb)) {
1671                 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1672                        hdev->name, PTR_ERR(skb));
1673                 return PTR_ERR(skb);
1674         }
1675         kfree_skb(skb);
1676
1677         /* Read Intel specific controller version first to allow selection of
1678          * which firmware file to load.
1679          *
1680          * The returned information are hardware variant and revision plus
1681          * firmware variant, revision and build number.
1682          */
1683         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1684         if (IS_ERR(skb)) {
1685                 BT_ERR("%s reading Intel fw version command failed (%ld)",
1686                        hdev->name, PTR_ERR(skb));
1687                 return PTR_ERR(skb);
1688         }
1689
1690         if (skb->len != sizeof(*ver)) {
1691                 BT_ERR("%s Intel version event length mismatch", hdev->name);
1692                 kfree_skb(skb);
1693                 return -EIO;
1694         }
1695
1696         ver = (struct intel_version *)skb->data;
1697
1698         BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1699                 hdev->name, ver->hw_platform, ver->hw_variant,
1700                 ver->hw_revision, ver->fw_variant,  ver->fw_revision,
1701                 ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
1702                 ver->fw_patch_num);
1703
1704         /* fw_patch_num indicates the version of patch the device currently
1705          * have. If there is no patch data in the device, it is always 0x00.
1706          * So, if it is other than 0x00, no need to patch the device again.
1707          */
1708         if (ver->fw_patch_num) {
1709                 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1710                         hdev->name, ver->fw_patch_num);
1711                 kfree_skb(skb);
1712                 goto complete;
1713         }
1714
1715         /* Opens the firmware patch file based on the firmware version read
1716          * from the controller. If it fails to open the matching firmware
1717          * patch file, it tries to open the default firmware patch file.
1718          * If no patch file is found, allow the device to operate without
1719          * a patch.
1720          */
1721         fw = btusb_setup_intel_get_fw(hdev, ver);
1722         if (!fw) {
1723                 kfree_skb(skb);
1724                 goto complete;
1725         }
1726         fw_ptr = fw->data;
1727
1728         kfree_skb(skb);
1729
1730         /* This Intel specific command enables the manufacturer mode of the
1731          * controller.
1732          *
1733          * Only while this mode is enabled, the driver can download the
1734          * firmware patch data and configuration parameters.
1735          */
1736         skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
1737         if (IS_ERR(skb)) {
1738                 BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
1739                        hdev->name, PTR_ERR(skb));
1740                 release_firmware(fw);
1741                 return PTR_ERR(skb);
1742         }
1743
1744         kfree_skb(skb);
1745
1746         disable_patch = 1;
1747
1748         /* The firmware data file consists of list of Intel specific HCI
1749          * commands and its expected events. The first byte indicates the
1750          * type of the message, either HCI command or HCI event.
1751          *
1752          * It reads the command and its expected event from the firmware file,
1753          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1754          * the returned event is compared with the event read from the firmware
1755          * file and it will continue until all the messages are downloaded to
1756          * the controller.
1757          *
1758          * Once the firmware patching is completed successfully,
1759          * the manufacturer mode is disabled with reset and activating the
1760          * downloaded patch.
1761          *
1762          * If the firmware patching fails, the manufacturer mode is
1763          * disabled with reset and deactivating the patch.
1764          *
1765          * If the default patch file is used, no reset is done when disabling
1766          * the manufacturer.
1767          */
1768         while (fw->size > fw_ptr - fw->data) {
1769                 int ret;
1770
1771                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1772                                                  &disable_patch);
1773                 if (ret < 0)
1774                         goto exit_mfg_deactivate;
1775         }
1776
1777         release_firmware(fw);
1778
1779         if (disable_patch)
1780                 goto exit_mfg_disable;
1781
1782         /* Patching completed successfully and disable the manufacturer mode
1783          * with reset and activate the downloaded firmware patches.
1784          */
1785         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
1786                              mfg_reset_activate, HCI_INIT_TIMEOUT);
1787         if (IS_ERR(skb)) {
1788                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1789                        hdev->name, PTR_ERR(skb));
1790                 return PTR_ERR(skb);
1791         }
1792         kfree_skb(skb);
1793
1794         BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1795                 hdev->name);
1796
1797         goto complete;
1798
1799 exit_mfg_disable:
1800         /* Disable the manufacturer mode without reset */
1801         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
1802                              HCI_INIT_TIMEOUT);
1803         if (IS_ERR(skb)) {
1804                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1805                        hdev->name, PTR_ERR(skb));
1806                 return PTR_ERR(skb);
1807         }
1808         kfree_skb(skb);
1809
1810         BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1811
1812         goto complete;
1813
1814 exit_mfg_deactivate:
1815         release_firmware(fw);
1816
1817         /* Patching failed. Disable the manufacturer mode with reset and
1818          * deactivate the downloaded firmware patches.
1819          */
1820         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
1821                              mfg_reset_deactivate, HCI_INIT_TIMEOUT);
1822         if (IS_ERR(skb)) {
1823                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1824                        hdev->name, PTR_ERR(skb));
1825                 return PTR_ERR(skb);
1826         }
1827         kfree_skb(skb);
1828
1829         BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1830                 hdev->name);
1831
1832 complete:
1833         /* Set the event mask for Intel specific vendor events. This enables
1834          * a few extra events that are useful during general operation.
1835          */
1836         btintel_set_event_mask_mfg(hdev, false);
1837
1838         btintel_check_bdaddr(hdev);
1839         return 0;
1840 }
1841
1842 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
1843 {
1844         struct sk_buff *skb;
1845         struct hci_event_hdr *hdr;
1846         struct hci_ev_cmd_complete *evt;
1847
1848         skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_ATOMIC);
1849         if (!skb)
1850                 return -ENOMEM;
1851
1852         hdr = (struct hci_event_hdr *)skb_put(skb, sizeof(*hdr));
1853         hdr->evt = HCI_EV_CMD_COMPLETE;
1854         hdr->plen = sizeof(*evt) + 1;
1855
1856         evt = (struct hci_ev_cmd_complete *)skb_put(skb, sizeof(*evt));
1857         evt->ncmd = 0x01;
1858         evt->opcode = cpu_to_le16(opcode);
1859
1860         *skb_put(skb, 1) = 0x00;
1861
1862         bt_cb(skb)->pkt_type = HCI_EVENT_PKT;
1863
1864         return hci_recv_frame(hdev, skb);
1865 }
1866
1867 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
1868                                  int count)
1869 {
1870         /* When the device is in bootloader mode, then it can send
1871          * events via the bulk endpoint. These events are treated the
1872          * same way as the ones received from the interrupt endpoint.
1873          */
1874         if (test_bit(BTUSB_BOOTLOADER, &data->flags))
1875                 return btusb_recv_intr(data, buffer, count);
1876
1877         return btusb_recv_bulk(data, buffer, count);
1878 }
1879
1880 static void btusb_intel_bootup(struct btusb_data *data, const void *ptr,
1881                                unsigned int len)
1882 {
1883         const struct intel_bootup *evt = ptr;
1884
1885         if (len != sizeof(*evt))
1886                 return;
1887
1888         if (test_and_clear_bit(BTUSB_BOOTING, &data->flags)) {
1889                 smp_mb__after_atomic();
1890                 wake_up_bit(&data->flags, BTUSB_BOOTING);
1891         }
1892 }
1893
1894 static void btusb_intel_secure_send_result(struct btusb_data *data,
1895                                            const void *ptr, unsigned int len)
1896 {
1897         const struct intel_secure_send_result *evt = ptr;
1898
1899         if (len != sizeof(*evt))
1900                 return;
1901
1902         if (evt->result)
1903                 set_bit(BTUSB_FIRMWARE_FAILED, &data->flags);
1904
1905         if (test_and_clear_bit(BTUSB_DOWNLOADING, &data->flags) &&
1906             test_bit(BTUSB_FIRMWARE_LOADED, &data->flags)) {
1907                 smp_mb__after_atomic();
1908                 wake_up_bit(&data->flags, BTUSB_DOWNLOADING);
1909         }
1910 }
1911
1912 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
1913 {
1914         struct btusb_data *data = hci_get_drvdata(hdev);
1915
1916         if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1917                 struct hci_event_hdr *hdr = (void *)skb->data;
1918
1919                 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
1920                     hdr->plen > 0) {
1921                         const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
1922                         unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
1923
1924                         switch (skb->data[2]) {
1925                         case 0x02:
1926                                 /* When switching to the operational firmware
1927                                  * the device sends a vendor specific event
1928                                  * indicating that the bootup completed.
1929                                  */
1930                                 btusb_intel_bootup(data, ptr, len);
1931                                 break;
1932                         case 0x06:
1933                                 /* When the firmware loading completes the
1934                                  * device sends out a vendor specific event
1935                                  * indicating the result of the firmware
1936                                  * loading.
1937                                  */
1938                                 btusb_intel_secure_send_result(data, ptr, len);
1939                                 break;
1940                         }
1941                 }
1942         }
1943
1944         return hci_recv_frame(hdev, skb);
1945 }
1946
1947 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
1948 {
1949         struct btusb_data *data = hci_get_drvdata(hdev);
1950         struct urb *urb;
1951
1952         BT_DBG("%s", hdev->name);
1953
1954         switch (bt_cb(skb)->pkt_type) {
1955         case HCI_COMMAND_PKT:
1956                 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1957                         struct hci_command_hdr *cmd = (void *)skb->data;
1958                         __u16 opcode = le16_to_cpu(cmd->opcode);
1959
1960                         /* When in bootloader mode and the command 0xfc09
1961                          * is received, it needs to be send down the
1962                          * bulk endpoint. So allocate a bulk URB instead.
1963                          */
1964                         if (opcode == 0xfc09)
1965                                 urb = alloc_bulk_urb(hdev, skb);
1966                         else
1967                                 urb = alloc_ctrl_urb(hdev, skb);
1968
1969                         /* When the 0xfc01 command is issued to boot into
1970                          * the operational firmware, it will actually not
1971                          * send a command complete event. To keep the flow
1972                          * control working inject that event here.
1973                          */
1974                         if (opcode == 0xfc01)
1975                                 inject_cmd_complete(hdev, opcode);
1976                 } else {
1977                         urb = alloc_ctrl_urb(hdev, skb);
1978                 }
1979                 if (IS_ERR(urb))
1980                         return PTR_ERR(urb);
1981
1982                 hdev->stat.cmd_tx++;
1983                 return submit_or_queue_tx_urb(hdev, urb);
1984
1985         case HCI_ACLDATA_PKT:
1986                 urb = alloc_bulk_urb(hdev, skb);
1987                 if (IS_ERR(urb))
1988                         return PTR_ERR(urb);
1989
1990                 hdev->stat.acl_tx++;
1991                 return submit_or_queue_tx_urb(hdev, urb);
1992
1993         case HCI_SCODATA_PKT:
1994                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1995                         return -ENODEV;
1996
1997                 urb = alloc_isoc_urb(hdev, skb);
1998                 if (IS_ERR(urb))
1999                         return PTR_ERR(urb);
2000
2001                 hdev->stat.sco_tx++;
2002                 return submit_tx_urb(hdev, urb);
2003         }
2004
2005         return -EILSEQ;
2006 }
2007
2008 static int btusb_setup_intel_new(struct hci_dev *hdev)
2009 {
2010         static const u8 reset_param[] = { 0x00, 0x01, 0x00, 0x01,
2011                                           0x00, 0x08, 0x04, 0x00 };
2012         struct btusb_data *data = hci_get_drvdata(hdev);
2013         struct sk_buff *skb;
2014         struct intel_version *ver;
2015         struct intel_boot_params *params;
2016         const struct firmware *fw;
2017         const u8 *fw_ptr;
2018         u32 frag_len;
2019         char fwname[64];
2020         ktime_t calltime, delta, rettime;
2021         unsigned long long duration;
2022         int err;
2023
2024         BT_DBG("%s", hdev->name);
2025
2026         calltime = ktime_get();
2027
2028         /* Read the Intel version information to determine if the device
2029          * is in bootloader mode or if it already has operational firmware
2030          * loaded.
2031          */
2032         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
2033         if (IS_ERR(skb)) {
2034                 BT_ERR("%s: Reading Intel version information failed (%ld)",
2035                        hdev->name, PTR_ERR(skb));
2036                 return PTR_ERR(skb);
2037         }
2038
2039         if (skb->len != sizeof(*ver)) {
2040                 BT_ERR("%s: Intel version event size mismatch", hdev->name);
2041                 kfree_skb(skb);
2042                 return -EILSEQ;
2043         }
2044
2045         ver = (struct intel_version *)skb->data;
2046
2047         /* The hardware platform number has a fixed value of 0x37 and
2048          * for now only accept this single value.
2049          */
2050         if (ver->hw_platform != 0x37) {
2051                 BT_ERR("%s: Unsupported Intel hardware platform (%u)",
2052                        hdev->name, ver->hw_platform);
2053                 kfree_skb(skb);
2054                 return -EINVAL;
2055         }
2056
2057         /* At the moment only the hardware variant iBT 3.0 (LnP/SfP) is
2058          * supported by this firmware loading method. This check has been
2059          * put in place to ensure correct forward compatibility options
2060          * when newer hardware variants come along.
2061          */
2062         if (ver->hw_variant != 0x0b) {
2063                 BT_ERR("%s: Unsupported Intel hardware variant (%u)",
2064                        hdev->name, ver->hw_variant);
2065                 kfree_skb(skb);
2066                 return -EINVAL;
2067         }
2068
2069         btintel_version_info(hdev, ver);
2070
2071         /* The firmware variant determines if the device is in bootloader
2072          * mode or is running operational firmware. The value 0x06 identifies
2073          * the bootloader and the value 0x23 identifies the operational
2074          * firmware.
2075          *
2076          * When the operational firmware is already present, then only
2077          * the check for valid Bluetooth device address is needed. This
2078          * determines if the device will be added as configured or
2079          * unconfigured controller.
2080          *
2081          * It is not possible to use the Secure Boot Parameters in this
2082          * case since that command is only available in bootloader mode.
2083          */
2084         if (ver->fw_variant == 0x23) {
2085                 kfree_skb(skb);
2086                 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2087                 btintel_check_bdaddr(hdev);
2088                 return 0;
2089         }
2090
2091         /* If the device is not in bootloader mode, then the only possible
2092          * choice is to return an error and abort the device initialization.
2093          */
2094         if (ver->fw_variant != 0x06) {
2095                 BT_ERR("%s: Unsupported Intel firmware variant (%u)",
2096                        hdev->name, ver->fw_variant);
2097                 kfree_skb(skb);
2098                 return -ENODEV;
2099         }
2100
2101         kfree_skb(skb);
2102
2103         /* Read the secure boot parameters to identify the operating
2104          * details of the bootloader.
2105          */
2106         skb = __hci_cmd_sync(hdev, 0xfc0d, 0, NULL, HCI_INIT_TIMEOUT);
2107         if (IS_ERR(skb)) {
2108                 BT_ERR("%s: Reading Intel boot parameters failed (%ld)",
2109                        hdev->name, PTR_ERR(skb));
2110                 return PTR_ERR(skb);
2111         }
2112
2113         if (skb->len != sizeof(*params)) {
2114                 BT_ERR("%s: Intel boot parameters size mismatch", hdev->name);
2115                 kfree_skb(skb);
2116                 return -EILSEQ;
2117         }
2118
2119         params = (struct intel_boot_params *)skb->data;
2120
2121         BT_INFO("%s: Device revision is %u", hdev->name,
2122                 le16_to_cpu(params->dev_revid));
2123
2124         BT_INFO("%s: Secure boot is %s", hdev->name,
2125                 params->secure_boot ? "enabled" : "disabled");
2126
2127         BT_INFO("%s: OTP lock is %s", hdev->name,
2128                 params->otp_lock ? "enabled" : "disabled");
2129
2130         BT_INFO("%s: API lock is %s", hdev->name,
2131                 params->api_lock ? "enabled" : "disabled");
2132
2133         BT_INFO("%s: Debug lock is %s", hdev->name,
2134                 params->debug_lock ? "enabled" : "disabled");
2135
2136         BT_INFO("%s: Minimum firmware build %u week %u %u", hdev->name,
2137                 params->min_fw_build_nn, params->min_fw_build_cw,
2138                 2000 + params->min_fw_build_yy);
2139
2140         /* It is required that every single firmware fragment is acknowledged
2141          * with a command complete event. If the boot parameters indicate
2142          * that this bootloader does not send them, then abort the setup.
2143          */
2144         if (params->limited_cce != 0x00) {
2145                 BT_ERR("%s: Unsupported Intel firmware loading method (%u)",
2146                        hdev->name, params->limited_cce);
2147                 kfree_skb(skb);
2148                 return -EINVAL;
2149         }
2150
2151         /* If the OTP has no valid Bluetooth device address, then there will
2152          * also be no valid address for the operational firmware.
2153          */
2154         if (!bacmp(&params->otp_bdaddr, BDADDR_ANY)) {
2155                 BT_INFO("%s: No device address configured", hdev->name);
2156                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2157         }
2158
2159         /* With this Intel bootloader only the hardware variant and device
2160          * revision information are used to select the right firmware.
2161          *
2162          * Currently this bootloader support is limited to hardware variant
2163          * iBT 3.0 (LnP/SfP) which is identified by the value 11 (0x0b).
2164          */
2165         snprintf(fwname, sizeof(fwname), "intel/ibt-11-%u.sfi",
2166                  le16_to_cpu(params->dev_revid));
2167
2168         err = request_firmware(&fw, fwname, &hdev->dev);
2169         if (err < 0) {
2170                 BT_ERR("%s: Failed to load Intel firmware file (%d)",
2171                        hdev->name, err);
2172                 kfree_skb(skb);
2173                 return err;
2174         }
2175
2176         BT_INFO("%s: Found device firmware: %s", hdev->name, fwname);
2177
2178         /* Save the DDC file name for later use to apply once the firmware
2179          * downloading is done.
2180          */
2181         snprintf(fwname, sizeof(fwname), "intel/ibt-11-%u.ddc",
2182                  le16_to_cpu(params->dev_revid));
2183
2184         kfree_skb(skb);
2185
2186         if (fw->size < 644) {
2187                 BT_ERR("%s: Invalid size of firmware file (%zu)",
2188                        hdev->name, fw->size);
2189                 err = -EBADF;
2190                 goto done;
2191         }
2192
2193         set_bit(BTUSB_DOWNLOADING, &data->flags);
2194
2195         /* Start the firmware download transaction with the Init fragment
2196          * represented by the 128 bytes of CSS header.
2197          */
2198         err = btintel_secure_send(hdev, 0x00, 128, fw->data);
2199         if (err < 0) {
2200                 BT_ERR("%s: Failed to send firmware header (%d)",
2201                        hdev->name, err);
2202                 goto done;
2203         }
2204
2205         /* Send the 256 bytes of public key information from the firmware
2206          * as the PKey fragment.
2207          */
2208         err = btintel_secure_send(hdev, 0x03, 256, fw->data + 128);
2209         if (err < 0) {
2210                 BT_ERR("%s: Failed to send firmware public key (%d)",
2211                        hdev->name, err);
2212                 goto done;
2213         }
2214
2215         /* Send the 256 bytes of signature information from the firmware
2216          * as the Sign fragment.
2217          */
2218         err = btintel_secure_send(hdev, 0x02, 256, fw->data + 388);
2219         if (err < 0) {
2220                 BT_ERR("%s: Failed to send firmware signature (%d)",
2221                        hdev->name, err);
2222                 goto done;
2223         }
2224
2225         fw_ptr = fw->data + 644;
2226         frag_len = 0;
2227
2228         while (fw_ptr - fw->data < fw->size) {
2229                 struct hci_command_hdr *cmd = (void *)(fw_ptr + frag_len);
2230
2231                 frag_len += sizeof(*cmd) + cmd->plen;
2232
2233                 /* The parameter length of the secure send command requires
2234                  * a 4 byte alignment. It happens so that the firmware file
2235                  * contains proper Intel_NOP commands to align the fragments
2236                  * as needed.
2237                  *
2238                  * Send set of commands with 4 byte alignment from the
2239                  * firmware data buffer as a single Data fragement.
2240                  */
2241                 if (!(frag_len % 4)) {
2242                         err = btintel_secure_send(hdev, 0x01, frag_len, fw_ptr);
2243                         if (err < 0) {
2244                                 BT_ERR("%s: Failed to send firmware data (%d)",
2245                                        hdev->name, err);
2246                                 goto done;
2247                         }
2248
2249                         fw_ptr += frag_len;
2250                         frag_len = 0;
2251                 }
2252         }
2253
2254         set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2255
2256         BT_INFO("%s: Waiting for firmware download to complete", hdev->name);
2257
2258         /* Before switching the device into operational mode and with that
2259          * booting the loaded firmware, wait for the bootloader notification
2260          * that all fragments have been successfully received.
2261          *
2262          * When the event processing receives the notification, then the
2263          * BTUSB_DOWNLOADING flag will be cleared.
2264          *
2265          * The firmware loading should not take longer than 5 seconds
2266          * and thus just timeout if that happens and fail the setup
2267          * of this device.
2268          */
2269         err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
2270                                   TASK_INTERRUPTIBLE,
2271                                   msecs_to_jiffies(5000));
2272         if (err == 1) {
2273                 BT_ERR("%s: Firmware loading interrupted", hdev->name);
2274                 err = -EINTR;
2275                 goto done;
2276         }
2277
2278         if (err) {
2279                 BT_ERR("%s: Firmware loading timeout", hdev->name);
2280                 err = -ETIMEDOUT;
2281                 goto done;
2282         }
2283
2284         if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) {
2285                 BT_ERR("%s: Firmware loading failed", hdev->name);
2286                 err = -ENOEXEC;
2287                 goto done;
2288         }
2289
2290         rettime = ktime_get();
2291         delta = ktime_sub(rettime, calltime);
2292         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2293
2294         BT_INFO("%s: Firmware loaded in %llu usecs", hdev->name, duration);
2295
2296 done:
2297         release_firmware(fw);
2298
2299         if (err < 0)
2300                 return err;
2301
2302         calltime = ktime_get();
2303
2304         set_bit(BTUSB_BOOTING, &data->flags);
2305
2306         skb = __hci_cmd_sync(hdev, 0xfc01, sizeof(reset_param), reset_param,
2307                              HCI_INIT_TIMEOUT);
2308         if (IS_ERR(skb))
2309                 return PTR_ERR(skb);
2310
2311         kfree_skb(skb);
2312
2313         /* The bootloader will not indicate when the device is ready. This
2314          * is done by the operational firmware sending bootup notification.
2315          *
2316          * Booting into operational firmware should not take longer than
2317          * 1 second. However if that happens, then just fail the setup
2318          * since something went wrong.
2319          */
2320         BT_INFO("%s: Waiting for device to boot", hdev->name);
2321
2322         err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING,
2323                                   TASK_INTERRUPTIBLE,
2324                                   msecs_to_jiffies(1000));
2325
2326         if (err == 1) {
2327                 BT_ERR("%s: Device boot interrupted", hdev->name);
2328                 return -EINTR;
2329         }
2330
2331         if (err) {
2332                 BT_ERR("%s: Device boot timeout", hdev->name);
2333                 return -ETIMEDOUT;
2334         }
2335
2336         rettime = ktime_get();
2337         delta = ktime_sub(rettime, calltime);
2338         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2339
2340         BT_INFO("%s: Device booted in %llu usecs", hdev->name, duration);
2341
2342         clear_bit(BTUSB_BOOTLOADER, &data->flags);
2343
2344         /* Once the device is running in operational mode, it needs to apply
2345          * the device configuration (DDC) parameters.
2346          *
2347          * The device can work without DDC parameters, so even if it fails
2348          * to load the file, no need to fail the setup.
2349          */
2350         btintel_load_ddc_config(hdev, fwname);
2351
2352         /* Set the event mask for Intel specific vendor events. This enables
2353          * a few extra events that are useful during general operation. It
2354          * does not enable any debugging related events.
2355          *
2356          * The device will function correctly without these events enabled
2357          * and thus no need to fail the setup.
2358          */
2359         btintel_set_event_mask(hdev, false);
2360
2361         return 0;
2362 }
2363
2364 static int btusb_shutdown_intel(struct hci_dev *hdev)
2365 {
2366         struct sk_buff *skb;
2367         long ret;
2368
2369         /* Some platforms have an issue with BT LED when the interface is
2370          * down or BT radio is turned off, which takes 5 seconds to BT LED
2371          * goes off. This command turns off the BT LED immediately.
2372          */
2373         skb = __hci_cmd_sync(hdev, 0xfc3f, 0, NULL, HCI_INIT_TIMEOUT);
2374         if (IS_ERR(skb)) {
2375                 ret = PTR_ERR(skb);
2376                 BT_ERR("%s: turning off Intel device LED failed (%ld)",
2377                        hdev->name, ret);
2378                 return ret;
2379         }
2380         kfree_skb(skb);
2381
2382         return 0;
2383 }
2384
2385 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
2386                                     const bdaddr_t *bdaddr)
2387 {
2388         struct sk_buff *skb;
2389         u8 buf[8];
2390         long ret;
2391
2392         buf[0] = 0xfe;
2393         buf[1] = sizeof(bdaddr_t);
2394         memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
2395
2396         skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2397         if (IS_ERR(skb)) {
2398                 ret = PTR_ERR(skb);
2399                 BT_ERR("%s: changing Marvell device address failed (%ld)",
2400                        hdev->name, ret);
2401                 return ret;
2402         }
2403         kfree_skb(skb);
2404
2405         return 0;
2406 }
2407
2408 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
2409                                     const bdaddr_t *bdaddr)
2410 {
2411         struct sk_buff *skb;
2412         u8 buf[10];
2413         long ret;
2414
2415         buf[0] = 0x01;
2416         buf[1] = 0x01;
2417         buf[2] = 0x00;
2418         buf[3] = sizeof(bdaddr_t);
2419         memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
2420
2421         skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2422         if (IS_ERR(skb)) {
2423                 ret = PTR_ERR(skb);
2424                 BT_ERR("%s: Change address command failed (%ld)",
2425                        hdev->name, ret);
2426                 return ret;
2427         }
2428         kfree_skb(skb);
2429
2430         return 0;
2431 }
2432
2433 #define QCA_DFU_PACKET_LEN      4096
2434
2435 #define QCA_GET_TARGET_VERSION  0x09
2436 #define QCA_CHECK_STATUS        0x05
2437 #define QCA_DFU_DOWNLOAD        0x01
2438
2439 #define QCA_SYSCFG_UPDATED      0x40
2440 #define QCA_PATCH_UPDATED       0x80
2441 #define QCA_DFU_TIMEOUT         3000
2442
2443 struct qca_version {
2444         __le32  rom_version;
2445         __le32  patch_version;
2446         __le32  ram_version;
2447         __le32  ref_clock;
2448         __u8    reserved[4];
2449 } __packed;
2450
2451 struct qca_rampatch_version {
2452         __le16  rom_version;
2453         __le16  patch_version;
2454 } __packed;
2455
2456 struct qca_device_info {
2457         u32     rom_version;
2458         u8      rampatch_hdr;   /* length of header in rampatch */
2459         u8      nvm_hdr;        /* length of header in NVM */
2460         u8      ver_offset;     /* offset of version structure in rampatch */
2461 };
2462
2463 static const struct qca_device_info qca_devices_table[] = {
2464         { 0x00000100, 20, 4, 10 }, /* Rome 1.0 */
2465         { 0x00000101, 20, 4, 10 }, /* Rome 1.1 */
2466         { 0x00000200, 28, 4, 18 }, /* Rome 2.0 */
2467         { 0x00000201, 28, 4, 18 }, /* Rome 2.1 */
2468         { 0x00000300, 28, 4, 18 }, /* Rome 3.0 */
2469         { 0x00000302, 28, 4, 18 }, /* Rome 3.2 */
2470 };
2471
2472 static int btusb_qca_send_vendor_req(struct hci_dev *hdev, u8 request,
2473                                      void *data, u16 size)
2474 {
2475         struct btusb_data *btdata = hci_get_drvdata(hdev);
2476         struct usb_device *udev = btdata->udev;
2477         int pipe, err;
2478         u8 *buf;
2479
2480         buf = kmalloc(size, GFP_KERNEL);
2481         if (!buf)
2482                 return -ENOMEM;
2483
2484         /* Found some of USB hosts have IOT issues with ours so that we should
2485          * not wait until HCI layer is ready.
2486          */
2487         pipe = usb_rcvctrlpipe(udev, 0);
2488         err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
2489                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2490         if (err < 0) {
2491                 BT_ERR("%s: Failed to access otp area (%d)", hdev->name, err);
2492                 goto done;
2493         }
2494
2495         memcpy(data, buf, size);
2496
2497 done:
2498         kfree(buf);
2499
2500         return err;
2501 }
2502
2503 static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
2504                                        const struct firmware *firmware,
2505                                        size_t hdr_size)
2506 {
2507         struct btusb_data *btdata = hci_get_drvdata(hdev);
2508         struct usb_device *udev = btdata->udev;
2509         size_t count, size, sent = 0;
2510         int pipe, len, err;
2511         u8 *buf;
2512
2513         buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
2514         if (!buf)
2515                 return -ENOMEM;
2516
2517         count = firmware->size;
2518
2519         size = min_t(size_t, count, hdr_size);
2520         memcpy(buf, firmware->data, size);
2521
2522         /* USB patches should go down to controller through USB path
2523          * because binary format fits to go down through USB channel.
2524          * USB control path is for patching headers and USB bulk is for
2525          * patch body.
2526          */
2527         pipe = usb_sndctrlpipe(udev, 0);
2528         err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
2529                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2530         if (err < 0) {
2531                 BT_ERR("%s: Failed to send headers (%d)", hdev->name, err);
2532                 goto done;
2533         }
2534
2535         sent += size;
2536         count -= size;
2537
2538         while (count) {
2539                 size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
2540
2541                 memcpy(buf, firmware->data + sent, size);
2542
2543                 pipe = usb_sndbulkpipe(udev, 0x02);
2544                 err = usb_bulk_msg(udev, pipe, buf, size, &len,
2545                                    QCA_DFU_TIMEOUT);
2546                 if (err < 0) {
2547                         BT_ERR("%s: Failed to send body at %zd of %zd (%d)",
2548                                hdev->name, sent, firmware->size, err);
2549                         break;
2550                 }
2551
2552                 if (size != len) {
2553                         BT_ERR("%s: Failed to get bulk buffer", hdev->name);
2554                         err = -EILSEQ;
2555                         break;
2556                 }
2557
2558                 sent  += size;
2559                 count -= size;
2560         }
2561
2562 done:
2563         kfree(buf);
2564         return err;
2565 }
2566
2567 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
2568                                          struct qca_version *ver,
2569                                          const struct qca_device_info *info)
2570 {
2571         struct qca_rampatch_version *rver;
2572         const struct firmware *fw;
2573         u32 ver_rom, ver_patch;
2574         u16 rver_rom, rver_patch;
2575         char fwname[64];
2576         int err;
2577
2578         ver_rom = le32_to_cpu(ver->rom_version);
2579         ver_patch = le32_to_cpu(ver->patch_version);
2580
2581         snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom);
2582
2583         err = request_firmware(&fw, fwname, &hdev->dev);
2584         if (err) {
2585                 BT_ERR("%s: failed to request rampatch file: %s (%d)",
2586                        hdev->name, fwname, err);
2587                 return err;
2588         }
2589
2590         BT_INFO("%s: using rampatch file: %s", hdev->name, fwname);
2591
2592         rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
2593         rver_rom = le16_to_cpu(rver->rom_version);
2594         rver_patch = le16_to_cpu(rver->patch_version);
2595
2596         BT_INFO("%s: QCA: patch rome 0x%x build 0x%x, firmware rome 0x%x "
2597                 "build 0x%x", hdev->name, rver_rom, rver_patch, ver_rom,
2598                 ver_patch);
2599
2600         if (rver_rom != ver_rom || rver_patch <= ver_patch) {
2601                 BT_ERR("%s: rampatch file version did not match with firmware",
2602                        hdev->name);
2603                 err = -EINVAL;
2604                 goto done;
2605         }
2606
2607         err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
2608
2609 done:
2610         release_firmware(fw);
2611
2612         return err;
2613 }
2614
2615 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
2616                                     struct qca_version *ver,
2617                                     const struct qca_device_info *info)
2618 {
2619         const struct firmware *fw;
2620         char fwname[64];
2621         int err;
2622
2623         snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x.bin",
2624                  le32_to_cpu(ver->rom_version));
2625
2626         err = request_firmware(&fw, fwname, &hdev->dev);
2627         if (err) {
2628                 BT_ERR("%s: failed to request NVM file: %s (%d)",
2629                        hdev->name, fwname, err);
2630                 return err;
2631         }
2632
2633         BT_INFO("%s: using NVM file: %s", hdev->name, fwname);
2634
2635         err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
2636
2637         release_firmware(fw);
2638
2639         return err;
2640 }
2641
2642 static int btusb_setup_qca(struct hci_dev *hdev)
2643 {
2644         const struct qca_device_info *info = NULL;
2645         struct qca_version ver;
2646         u32 ver_rom;
2647         u8 status;
2648         int i, err;
2649
2650         err = btusb_qca_send_vendor_req(hdev, QCA_GET_TARGET_VERSION, &ver,
2651                                         sizeof(ver));
2652         if (err < 0)
2653                 return err;
2654
2655         ver_rom = le32_to_cpu(ver.rom_version);
2656         for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
2657                 if (ver_rom == qca_devices_table[i].rom_version)
2658                         info = &qca_devices_table[i];
2659         }
2660         if (!info) {
2661                 BT_ERR("%s: don't support firmware rome 0x%x", hdev->name,
2662                        ver_rom);
2663                 return -ENODEV;
2664         }
2665
2666         err = btusb_qca_send_vendor_req(hdev, QCA_CHECK_STATUS, &status,
2667                                         sizeof(status));
2668         if (err < 0)
2669                 return err;
2670
2671         if (!(status & QCA_PATCH_UPDATED)) {
2672                 err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
2673                 if (err < 0)
2674                         return err;
2675         }
2676
2677         if (!(status & QCA_SYSCFG_UPDATED)) {
2678                 err = btusb_setup_qca_load_nvm(hdev, &ver, info);
2679                 if (err < 0)
2680                         return err;
2681         }
2682
2683         return 0;
2684 }
2685
2686 #ifdef CONFIG_BT_HCIBTUSB_BCM
2687 static inline int __set_diag_interface(struct hci_dev *hdev)
2688 {
2689         struct btusb_data *data = hci_get_drvdata(hdev);
2690         struct usb_interface *intf = data->diag;
2691         int i;
2692
2693         if (!data->diag)
2694                 return -ENODEV;
2695
2696         data->diag_tx_ep = NULL;
2697         data->diag_rx_ep = NULL;
2698
2699         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2700                 struct usb_endpoint_descriptor *ep_desc;
2701
2702                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2703
2704                 if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
2705                         data->diag_tx_ep = ep_desc;
2706                         continue;
2707                 }
2708
2709                 if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
2710                         data->diag_rx_ep = ep_desc;
2711                         continue;
2712                 }
2713         }
2714
2715         if (!data->diag_tx_ep || !data->diag_rx_ep) {
2716                 BT_ERR("%s invalid diagnostic descriptors", hdev->name);
2717                 return -ENODEV;
2718         }
2719
2720         return 0;
2721 }
2722
2723 static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable)
2724 {
2725         struct btusb_data *data = hci_get_drvdata(hdev);
2726         struct sk_buff *skb;
2727         struct urb *urb;
2728         unsigned int pipe;
2729
2730         if (!data->diag_tx_ep)
2731                 return ERR_PTR(-ENODEV);
2732
2733         urb = usb_alloc_urb(0, GFP_KERNEL);
2734         if (!urb)
2735                 return ERR_PTR(-ENOMEM);
2736
2737         skb = bt_skb_alloc(2, GFP_KERNEL);
2738         if (!skb) {
2739                 usb_free_urb(urb);
2740                 return ERR_PTR(-ENOMEM);
2741         }
2742
2743         *skb_put(skb, 1) = 0xf0;
2744         *skb_put(skb, 1) = enable;
2745
2746         pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress);
2747
2748         usb_fill_bulk_urb(urb, data->udev, pipe,
2749                           skb->data, skb->len, btusb_tx_complete, skb);
2750
2751         skb->dev = (void *)hdev;
2752
2753         return urb;
2754 }
2755
2756 static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable)
2757 {
2758         struct btusb_data *data = hci_get_drvdata(hdev);
2759         struct urb *urb;
2760
2761         if (!data->diag)
2762                 return -ENODEV;
2763
2764         if (!test_bit(HCI_RUNNING, &hdev->flags))
2765                 return -ENETDOWN;
2766
2767         urb = alloc_diag_urb(hdev, enable);
2768         if (IS_ERR(urb))
2769                 return PTR_ERR(urb);
2770
2771         return submit_or_queue_tx_urb(hdev, urb);
2772 }
2773 #endif
2774
2775 static int btusb_probe(struct usb_interface *intf,
2776                        const struct usb_device_id *id)
2777 {
2778         struct usb_endpoint_descriptor *ep_desc;
2779         struct btusb_data *data;
2780         struct hci_dev *hdev;
2781         unsigned ifnum_base;
2782         int i, err;
2783
2784         BT_DBG("intf %p id %p", intf, id);
2785
2786         /* interface numbers are hardcoded in the spec */
2787         if (intf->cur_altsetting->desc.bInterfaceNumber != 0) {
2788                 if (!(id->driver_info & BTUSB_IFNUM_2))
2789                         return -ENODEV;
2790                 if (intf->cur_altsetting->desc.bInterfaceNumber != 2)
2791                         return -ENODEV;
2792         }
2793
2794         ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber;
2795
2796         if (!id->driver_info) {
2797                 const struct usb_device_id *match;
2798
2799                 match = usb_match_id(intf, blacklist_table);
2800                 if (match)
2801                         id = match;
2802         }
2803
2804         if (id->driver_info == BTUSB_IGNORE)
2805                 return -ENODEV;
2806
2807         if (id->driver_info & BTUSB_ATH3012) {
2808                 struct usb_device *udev = interface_to_usbdev(intf);
2809
2810                 /* Old firmware would otherwise let ath3k driver load
2811                  * patch and sysconfig files */
2812                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
2813                         return -ENODEV;
2814         }
2815
2816         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
2817         if (!data)
2818                 return -ENOMEM;
2819
2820         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2821                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2822
2823                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
2824                         data->intr_ep = ep_desc;
2825                         continue;
2826                 }
2827
2828                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
2829                         data->bulk_tx_ep = ep_desc;
2830                         continue;
2831                 }
2832
2833                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
2834                         data->bulk_rx_ep = ep_desc;
2835                         continue;
2836                 }
2837         }
2838
2839         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
2840                 return -ENODEV;
2841
2842         if (id->driver_info & BTUSB_AMP) {
2843                 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
2844                 data->cmdreq = 0x2b;
2845         } else {
2846                 data->cmdreq_type = USB_TYPE_CLASS;
2847                 data->cmdreq = 0x00;
2848         }
2849
2850         data->udev = interface_to_usbdev(intf);
2851         data->intf = intf;
2852
2853         INIT_WORK(&data->work, btusb_work);
2854         INIT_WORK(&data->waker, btusb_waker);
2855         init_usb_anchor(&data->deferred);
2856         init_usb_anchor(&data->tx_anchor);
2857         spin_lock_init(&data->txlock);
2858
2859         init_usb_anchor(&data->intr_anchor);
2860         init_usb_anchor(&data->bulk_anchor);
2861         init_usb_anchor(&data->isoc_anchor);
2862         init_usb_anchor(&data->diag_anchor);
2863         spin_lock_init(&data->rxlock);
2864
2865         if (id->driver_info & BTUSB_INTEL_NEW) {
2866                 data->recv_event = btusb_recv_event_intel;
2867                 data->recv_bulk = btusb_recv_bulk_intel;
2868                 set_bit(BTUSB_BOOTLOADER, &data->flags);
2869         } else {
2870                 data->recv_event = hci_recv_frame;
2871                 data->recv_bulk = btusb_recv_bulk;
2872         }
2873
2874         hdev = hci_alloc_dev();
2875         if (!hdev)
2876                 return -ENOMEM;
2877
2878         hdev->bus = HCI_USB;
2879         hci_set_drvdata(hdev, data);
2880
2881         if (id->driver_info & BTUSB_AMP)
2882                 hdev->dev_type = HCI_AMP;
2883         else
2884                 hdev->dev_type = HCI_BREDR;
2885
2886         data->hdev = hdev;
2887
2888         SET_HCIDEV_DEV(hdev, &intf->dev);
2889
2890         hdev->open   = btusb_open;
2891         hdev->close  = btusb_close;
2892         hdev->flush  = btusb_flush;
2893         hdev->send   = btusb_send_frame;
2894         hdev->notify = btusb_notify;
2895
2896         if (id->driver_info & BTUSB_BCM2045)
2897                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
2898
2899         if (id->driver_info & BTUSB_BCM92035)
2900                 hdev->setup = btusb_setup_bcm92035;
2901
2902 #ifdef CONFIG_BT_HCIBTUSB_BCM
2903         if (id->driver_info & BTUSB_BCM_PATCHRAM) {
2904                 hdev->manufacturer = 15;
2905                 hdev->setup = btbcm_setup_patchram;
2906                 hdev->set_diag = btusb_bcm_set_diag;
2907                 hdev->set_bdaddr = btbcm_set_bdaddr;
2908
2909                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
2910                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
2911         }
2912
2913         if (id->driver_info & BTUSB_BCM_APPLE) {
2914                 hdev->manufacturer = 15;
2915                 hdev->setup = btbcm_setup_apple;
2916                 hdev->set_diag = btusb_bcm_set_diag;
2917
2918                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
2919                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
2920         }
2921 #endif
2922
2923         if (id->driver_info & BTUSB_INTEL) {
2924                 hdev->manufacturer = 2;
2925                 hdev->setup = btusb_setup_intel;
2926                 hdev->shutdown = btusb_shutdown_intel;
2927                 hdev->set_diag = btintel_set_diag_mfg;
2928                 hdev->set_bdaddr = btintel_set_bdaddr;
2929                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2930                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
2931                 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
2932         }
2933
2934         if (id->driver_info & BTUSB_INTEL_NEW) {
2935                 hdev->manufacturer = 2;
2936                 hdev->send = btusb_send_frame_intel;
2937                 hdev->setup = btusb_setup_intel_new;
2938                 hdev->hw_error = btintel_hw_error;
2939                 hdev->set_diag = btintel_set_diag;
2940                 hdev->set_bdaddr = btintel_set_bdaddr;
2941                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2942                 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
2943         }
2944
2945         if (id->driver_info & BTUSB_MARVELL)
2946                 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
2947
2948         if (id->driver_info & BTUSB_SWAVE) {
2949                 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
2950                 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
2951         }
2952
2953         if (id->driver_info & BTUSB_INTEL_BOOT) {
2954                 hdev->manufacturer = 2;
2955                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
2956         }
2957
2958         if (id->driver_info & BTUSB_ATH3012) {
2959                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
2960                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
2961                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2962         }
2963
2964         if (id->driver_info & BTUSB_QCA_ROME) {
2965                 data->setup_on_usb = btusb_setup_qca;
2966                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
2967         }
2968
2969 #ifdef CONFIG_BT_HCIBTUSB_RTL
2970         if (id->driver_info & BTUSB_REALTEK) {
2971                 hdev->setup = btrtl_setup_realtek;
2972
2973                 /* Realtek devices lose their updated firmware over suspend,
2974                  * but the USB hub doesn't notice any status change.
2975                  * Explicitly request a device reset on resume.
2976                  */
2977                 set_bit(BTUSB_RESET_RESUME, &data->flags);
2978         }
2979 #endif
2980
2981         if (id->driver_info & BTUSB_AMP) {
2982                 /* AMP controllers do not support SCO packets */
2983                 data->isoc = NULL;
2984         } else {
2985                 /* Interface orders are hardcoded in the specification */
2986                 data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1);
2987         }
2988
2989         if (!reset)
2990                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2991
2992         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
2993                 if (!disable_scofix)
2994                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
2995         }
2996
2997         if (id->driver_info & BTUSB_BROKEN_ISOC)
2998                 data->isoc = NULL;
2999
3000         if (id->driver_info & BTUSB_DIGIANSWER) {
3001                 data->cmdreq_type = USB_TYPE_VENDOR;
3002                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3003         }
3004
3005         if (id->driver_info & BTUSB_CSR) {
3006                 struct usb_device *udev = data->udev;
3007                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
3008
3009                 /* Old firmware would otherwise execute USB reset */
3010                 if (bcdDevice < 0x117)
3011                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3012
3013                 /* Fake CSR devices with broken commands */
3014                 if (bcdDevice <= 0x100 || bcdDevice == 0x134)
3015                         hdev->setup = btusb_setup_csr;
3016
3017                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3018         }
3019
3020         if (id->driver_info & BTUSB_SNIFFER) {
3021                 struct usb_device *udev = data->udev;
3022
3023                 /* New sniffer firmware has crippled HCI interface */
3024                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
3025                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3026         }
3027
3028         if (id->driver_info & BTUSB_INTEL_BOOT) {
3029                 /* A bug in the bootloader causes that interrupt interface is
3030                  * only enabled after receiving SetInterface(0, AltSetting=0).
3031                  */
3032                 err = usb_set_interface(data->udev, 0, 0);
3033                 if (err < 0) {
3034                         BT_ERR("failed to set interface 0, alt 0 %d", err);
3035                         hci_free_dev(hdev);
3036                         return err;
3037                 }
3038         }
3039
3040         if (data->isoc) {
3041                 err = usb_driver_claim_interface(&btusb_driver,
3042                                                  data->isoc, data);
3043                 if (err < 0) {
3044                         hci_free_dev(hdev);
3045                         return err;
3046                 }
3047         }
3048
3049 #ifdef CONFIG_BT_HCIBTUSB_BCM
3050         if (data->diag) {
3051                 if (!usb_driver_claim_interface(&btusb_driver,
3052                                                 data->diag, data))
3053                         __set_diag_interface(hdev);
3054                 else
3055                         data->diag = NULL;
3056         }
3057 #endif
3058
3059         err = hci_register_dev(hdev);
3060         if (err < 0) {
3061                 hci_free_dev(hdev);
3062                 return err;
3063         }
3064
3065         usb_set_intfdata(intf, data);
3066
3067         return 0;
3068 }
3069
3070 static void btusb_disconnect(struct usb_interface *intf)
3071 {
3072         struct btusb_data *data = usb_get_intfdata(intf);
3073         struct hci_dev *hdev;
3074
3075         BT_DBG("intf %p", intf);
3076
3077         if (!data)
3078                 return;
3079
3080         hdev = data->hdev;
3081         usb_set_intfdata(data->intf, NULL);
3082
3083         if (data->isoc)
3084                 usb_set_intfdata(data->isoc, NULL);
3085
3086         if (data->diag)
3087                 usb_set_intfdata(data->diag, NULL);
3088
3089         hci_unregister_dev(hdev);
3090
3091         if (intf == data->intf) {
3092                 if (data->isoc)
3093                         usb_driver_release_interface(&btusb_driver, data->isoc);
3094                 if (data->diag)
3095                         usb_driver_release_interface(&btusb_driver, data->diag);
3096         } else if (intf == data->isoc) {
3097                 if (data->diag)
3098                         usb_driver_release_interface(&btusb_driver, data->diag);
3099                 usb_driver_release_interface(&btusb_driver, data->intf);
3100         } else if (intf == data->diag) {
3101                 usb_driver_release_interface(&btusb_driver, data->intf);
3102                 if (data->isoc)
3103                         usb_driver_release_interface(&btusb_driver, data->isoc);
3104         }
3105
3106         hci_free_dev(hdev);
3107 }
3108
3109 #ifdef CONFIG_PM
3110 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
3111 {
3112         struct btusb_data *data = usb_get_intfdata(intf);
3113
3114         BT_DBG("intf %p", intf);
3115
3116         if (data->suspend_count++)
3117                 return 0;
3118
3119         spin_lock_irq(&data->txlock);
3120         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
3121                 set_bit(BTUSB_SUSPENDING, &data->flags);
3122                 spin_unlock_irq(&data->txlock);
3123         } else {
3124                 spin_unlock_irq(&data->txlock);
3125                 data->suspend_count--;
3126                 return -EBUSY;
3127         }
3128
3129         cancel_work_sync(&data->work);
3130
3131         btusb_stop_traffic(data);
3132         usb_kill_anchored_urbs(&data->tx_anchor);
3133
3134         /* Optionally request a device reset on resume, but only when
3135          * wakeups are disabled. If wakeups are enabled we assume the
3136          * device will stay powered up throughout suspend.
3137          */
3138         if (test_bit(BTUSB_RESET_RESUME, &data->flags) &&
3139             !device_may_wakeup(&data->udev->dev))
3140                 data->udev->reset_resume = 1;
3141
3142         return 0;
3143 }
3144
3145 static void play_deferred(struct btusb_data *data)
3146 {
3147         struct urb *urb;
3148         int err;
3149
3150         while ((urb = usb_get_from_anchor(&data->deferred))) {
3151                 err = usb_submit_urb(urb, GFP_ATOMIC);
3152                 if (err < 0)
3153                         break;
3154
3155                 data->tx_in_flight++;
3156         }
3157         usb_scuttle_anchored_urbs(&data->deferred);
3158 }
3159
3160 static int btusb_resume(struct usb_interface *intf)
3161 {
3162         struct btusb_data *data = usb_get_intfdata(intf);
3163         struct hci_dev *hdev = data->hdev;
3164         int err = 0;
3165
3166         BT_DBG("intf %p", intf);
3167
3168         if (--data->suspend_count)
3169                 return 0;
3170
3171         if (!test_bit(HCI_RUNNING, &hdev->flags))
3172                 goto done;
3173
3174         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
3175                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
3176                 if (err < 0) {
3177                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
3178                         goto failed;
3179                 }
3180         }
3181
3182         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
3183                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
3184                 if (err < 0) {
3185                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
3186                         goto failed;
3187                 }
3188
3189                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
3190         }
3191
3192         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
3193                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
3194                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
3195                 else
3196                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
3197         }
3198
3199         spin_lock_irq(&data->txlock);
3200         play_deferred(data);
3201         clear_bit(BTUSB_SUSPENDING, &data->flags);
3202         spin_unlock_irq(&data->txlock);
3203         schedule_work(&data->work);
3204
3205         return 0;
3206
3207 failed:
3208         usb_scuttle_anchored_urbs(&data->deferred);
3209 done:
3210         spin_lock_irq(&data->txlock);
3211         clear_bit(BTUSB_SUSPENDING, &data->flags);
3212         spin_unlock_irq(&data->txlock);
3213
3214         return err;
3215 }
3216 #endif
3217
3218 static struct usb_driver btusb_driver = {
3219         .name           = "btusb",
3220         .probe          = btusb_probe,
3221         .disconnect     = btusb_disconnect,
3222 #ifdef CONFIG_PM
3223         .suspend        = btusb_suspend,
3224         .resume         = btusb_resume,
3225 #endif
3226         .id_table       = btusb_table,
3227         .supports_autosuspend = 1,
3228         .disable_hub_initiated_lpm = 1,
3229 };
3230
3231 module_usb_driver(btusb_driver);
3232
3233 module_param(disable_scofix, bool, 0644);
3234 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
3235
3236 module_param(force_scofix, bool, 0644);
3237 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
3238
3239 module_param(reset, bool, 0644);
3240 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
3241
3242 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
3243 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
3244 MODULE_VERSION(VERSION);
3245 MODULE_LICENSE("GPL");