kernel/drivers/bluetooth/btusb.c

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