drivers/bluetooth/btusb.c

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