drivers/bluetooth/btusb.c

   1 /*
   2  *
   3  *  Generic Bluetooth USB driver
   4  *
   5  *  Copyright (C) 2005-2008  Marcel Holtmann <marcel@holtmann.org>
   6  *
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, write to the Free Software
  20  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  *
  22  */
  23
  24 #include <linux/module.h>
  25 #include <linux/usb.h>
  26 #include <linux/firmware.h>
  27 #include <asm/unaligned.h>
  28
  29 #include <net/bluetooth/bluetooth.h>
  30 #include <net/bluetooth/hci_core.h>
  31
  32 #include "btintel.h"
  33 #include "btbcm.h"
  34 #include "btrtl.h"
  35
  36 #define VERSION "0.8"
  37
  38 static bool disable_scofix;
  39 static bool force_scofix;
  40
  41 static bool reset = true;
  42
  43 static struct usb_driver btusb_driver;
  44
  45 #define BTUSB_IGNORE            0x01
  46 #define BTUSB_DIGIANSWER        0x02
  47 #define BTUSB_CSR               0x04
  48 #define BTUSB_SNIFFER           0x08
  49 #define BTUSB_BCM92035          0x10
  50 #define BTUSB_BROKEN_ISOC       0x20
  51 #define BTUSB_WRONG_SCO_MTU     0x40
  52 #define BTUSB_ATH3012           0x80
  53 #define BTUSB_INTEL             0x100
  54 #define BTUSB_INTEL_BOOT        0x200
  55 #define BTUSB_BCM_PATCHRAM      0x400
  56 #define BTUSB_MARVELL           0x800
  57 #define BTUSB_SWAVE             0x1000
  58 #define BTUSB_INTEL_NEW         0x2000
  59 #define BTUSB_AMP               0x4000
  60 #define BTUSB_QCA_ROME          0x8000
  61 #define BTUSB_BCM_APPLE         0x10000
  62 #define BTUSB_REALTEK           0x20000
  63 #define BTUSB_BCM2045           0x40000
  64 #define BTUSB_IFNUM_2           0x80000
  65
  66 static const struct usb_device_id btusb_table[] = {
  67         /* Generic Bluetooth USB device */
  68         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  69
  70         /* Generic Bluetooth AMP device */
  71         { USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP },
  72
  73         /* Generic Bluetooth USB interface */
  74         { USB_INTERFACE_INFO(0xe0, 0x01, 0x01) },
  75
  76         /* Apple-specific (Broadcom) devices */
  77         { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01),
  78           .driver_info = BTUSB_BCM_APPLE | BTUSB_IFNUM_2 },
  79
  80         /* MediaTek MT76x0E */
  81         { USB_DEVICE(0x0e8d, 0x763f) },
  82
  83         /* Broadcom SoftSailing reporting vendor specific */
  84         { USB_DEVICE(0x0a5c, 0x21e1) },
  85
  86         /* Apple MacBookPro 7,1 */
  87         { USB_DEVICE(0x05ac, 0x8213) },
  88
  89         /* Apple iMac11,1 */
  90         { USB_DEVICE(0x05ac, 0x8215) },
  91
  92         /* Apple MacBookPro6,2 */
  93         { USB_DEVICE(0x05ac, 0x8218) },
  94
  95         /* Apple MacBookAir3,1, MacBookAir3,2 */
  96         { USB_DEVICE(0x05ac, 0x821b) },
  97
  98         /* Apple MacBookAir4,1 */
  99         { USB_DEVICE(0x05ac, 0x821f) },
 100
 101         /* Apple MacBookPro8,2 */
 102         { USB_DEVICE(0x05ac, 0x821a) },
 103
 104         /* Apple MacMini5,1 */
 105         { USB_DEVICE(0x05ac, 0x8281) },
 106
 107         /* AVM BlueFRITZ! USB v2.0 */
 108         { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE },
 109
 110         /* Bluetooth Ultraport Module from IBM */
 111         { USB_DEVICE(0x04bf, 0x030a) },
 112
 113         /* ALPS Modules with non-standard id */
 114         { USB_DEVICE(0x044e, 0x3001) },
 115         { USB_DEVICE(0x044e, 0x3002) },
 116
 117         /* Ericsson with non-standard id */
 118         { USB_DEVICE(0x0bdb, 0x1002) },
 119
 120         /* Canyon CN-BTU1 with HID interfaces */
 121         { USB_DEVICE(0x0c10, 0x0000) },
 122
 123         /* Broadcom BCM20702A0 */
 124         { USB_DEVICE(0x413c, 0x8197) },
 125
 126         /* Broadcom BCM20702B0 (Dynex/Insignia) */
 127         { USB_DEVICE(0x19ff, 0x0239), .driver_info = BTUSB_BCM_PATCHRAM },
 128
 129         /* Broadcom BCM43142A0 (Foxconn/Lenovo) */
 130         { USB_DEVICE(0x105b, 0xe065), .driver_info = BTUSB_BCM_PATCHRAM },
 131
 132         /* Foxconn - Hon Hai */
 133         { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01),
 134           .driver_info = BTUSB_BCM_PATCHRAM },
 135
 136         /* Lite-On Technology - Broadcom based */
 137         { USB_VENDOR_AND_INTERFACE_INFO(0x04ca, 0xff, 0x01, 0x01),
 138           .driver_info = BTUSB_BCM_PATCHRAM },
 139
 140         /* Broadcom devices with vendor specific id */
 141         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
 142           .driver_info = BTUSB_BCM_PATCHRAM },
 143
 144         /* ASUSTek Computer - Broadcom based */
 145         { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01),
 146           .driver_info = BTUSB_BCM_PATCHRAM },
 147
 148         /* Belkin F8065bf - Broadcom based */
 149         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01),
 150           .driver_info = BTUSB_BCM_PATCHRAM },
 151
 152         /* IMC Networks - Broadcom based */
 153         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01),
 154           .driver_info = BTUSB_BCM_PATCHRAM },
 155
 156         /* Toshiba Corp - Broadcom based */
 157         { USB_VENDOR_AND_INTERFACE_INFO(0x0930, 0xff, 0x01, 0x01),
 158           .driver_info = BTUSB_BCM_PATCHRAM },
 159
 160         /* Intel Bluetooth USB Bootloader (RAM module) */
 161         { USB_DEVICE(0x8087, 0x0a5a),
 162           .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
 163
 164         { }     /* Terminating entry */
 165 };
 166
 167 MODULE_DEVICE_TABLE(usb, btusb_table);
 168
 169 static const struct usb_device_id blacklist_table[] = {
 170         /* CSR BlueCore devices */
 171         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 172
 173         /* Broadcom BCM2033 without firmware */
 174         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 175
 176         /* Broadcom BCM2045 devices */
 177         { USB_DEVICE(0x0a5c, 0x2045), .driver_info = BTUSB_BCM2045 },
 178
 179         /* Atheros 3011 with sflash firmware */
 180         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 181         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 182         { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE },
 183         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 184         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 185         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 186         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 187
 188         /* Atheros AR9285 Malbec with sflash firmware */
 189         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 190
 191         /* Atheros 3012 with sflash firmware */
 192         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 193         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 194         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 195         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 196         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 197         { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
 198         { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
 199         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 200         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 201         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 202         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 203         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 204         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 205         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 206         { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
 207         { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
 208         { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
 209         { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 },
 210         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 211         { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
 212         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 213         { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
 214         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 215         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 216         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 217         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 218         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 219         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
 220         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 221         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 222         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 223         { USB_DEVICE(0x0cf3, 0x817b), .driver_info = BTUSB_ATH3012 },
 224         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 225         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 226         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 227         { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 },
 228         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 229         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 230         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 231         { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 },
 232         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 233         { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
 234         { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
 235         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
 236         { USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 },
 237         { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
 238
 239         /* Atheros AR5BBU12 with sflash firmware */
 240         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 241
 242         /* Atheros AR5BBU12 with sflash firmware */
 243         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 244         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 245
 246         /* QCA ROME chipset */
 247         { USB_DEVICE(0x0cf3, 0xe007), .driver_info = BTUSB_QCA_ROME },
 248         { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME },
 249         { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME },
 250
 251         /* Broadcom BCM2035 */
 252         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 253         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 254         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 255
 256         /* Broadcom BCM2045 */
 257         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 258         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 259
 260         /* IBM/Lenovo ThinkPad with Broadcom chip */
 261         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 262         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 263
 264         /* HP laptop with Broadcom chip */
 265         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 266
 267         /* Dell laptop with Broadcom chip */
 268         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 269
 270         /* Dell Wireless 370 and 410 devices */
 271         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 272         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 273
 274         /* Belkin F8T012 and F8T013 devices */
 275         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 276         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 277
 278         /* Asus WL-BTD202 device */
 279         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 280
 281         /* Kensington Bluetooth USB adapter */
 282         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 283
 284         /* RTX Telecom based adapters with buggy SCO support */
 285         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 286         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 287
 288         /* CONWISE Technology based adapters with buggy SCO support */
 289         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 290
 291         /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
 292         { USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE },
 293
 294         /* Digianswer devices */
 295         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 296         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 297
 298         /* CSR BlueCore Bluetooth Sniffer */
 299         { USB_DEVICE(0x0a12, 0x0002),
 300           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 301
 302         /* Frontline ComProbe Bluetooth Sniffer */
 303         { USB_DEVICE(0x16d3, 0x0002),
 304           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 305
 306         /* Marvell Bluetooth devices */
 307         { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
 308         { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
 309
 310         /* Intel Bluetooth devices */
 311         { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR },
 312         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 313         { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
 314         { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_NEW },
 315
 316         /* Other Intel Bluetooth devices */
 317         { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01),
 318           .driver_info = BTUSB_IGNORE },
 319
 320         /* Realtek Bluetooth devices */
 321         { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01),
 322           .driver_info = BTUSB_REALTEK },
 323
 324         /* Additional Realtek 8723AE Bluetooth devices */
 325         { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK },
 326         { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK },
 327
 328         /* Additional Realtek 8723BE Bluetooth devices */
 329         { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK },
 330         { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK },
 331         { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
 332         { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
 333         { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },
 334
 335         /* Additional Realtek 8821AE Bluetooth devices */
 336         { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
 337         { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },
 338         { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK },
 339         { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK },
 340         { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK },
 341
 342         /* Silicon Wave based devices */
 343         { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE },
 344
 345         { }     /* Terminating entry */
 346 };
 347
 348 #define BTUSB_MAX_ISOC_FRAMES   10
 349
 350 #define BTUSB_INTR_RUNNING      0
 351 #define BTUSB_BULK_RUNNING      1
 352 #define BTUSB_ISOC_RUNNING      2
 353 #define BTUSB_SUSPENDING        3
 354 #define BTUSB_DID_ISO_RESUME    4
 355 #define BTUSB_BOOTLOADER        5
 356 #define BTUSB_DOWNLOADING       6
 357 #define BTUSB_FIRMWARE_LOADED   7
 358 #define BTUSB_FIRMWARE_FAILED   8
 359 #define BTUSB_BOOTING           9
 360 #define BTUSB_RESET_RESUME      10
 361 #define BTUSB_DIAG_RUNNING      11
 362
 363 struct btusb_data {
 364         struct hci_dev       *hdev;
 365         struct usb_device    *udev;
 366         struct usb_interface *intf;
 367         struct usb_interface *isoc;
 368         struct usb_interface *diag;
 369
 370         unsigned long flags;
 371
 372         struct work_struct work;
 373         struct work_struct waker;
 374
 375         struct usb_anchor deferred;
 376         struct usb_anchor tx_anchor;
 377         int tx_in_flight;
 378         spinlock_t txlock;
 379
 380         struct usb_anchor intr_anchor;
 381         struct usb_anchor bulk_anchor;
 382         struct usb_anchor isoc_anchor;
 383         struct usb_anchor diag_anchor;
 384         spinlock_t rxlock;
 385
 386         struct sk_buff *evt_skb;
 387         struct sk_buff *acl_skb;
 388         struct sk_buff *sco_skb;
 389
 390         struct usb_endpoint_descriptor *intr_ep;
 391         struct usb_endpoint_descriptor *bulk_tx_ep;
 392         struct usb_endpoint_descriptor *bulk_rx_ep;
 393         struct usb_endpoint_descriptor *isoc_tx_ep;
 394         struct usb_endpoint_descriptor *isoc_rx_ep;
 395         struct usb_endpoint_descriptor *diag_tx_ep;
 396         struct usb_endpoint_descriptor *diag_rx_ep;
 397
 398         __u8 cmdreq_type;
 399         __u8 cmdreq;
 400
 401         unsigned int sco_num;
 402         int isoc_altsetting;
 403         int suspend_count;
 404
 405         int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
 406         int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
 407
 408         int (*setup_on_usb)(struct hci_dev *hdev);
 409 };
 410
 411 static inline void btusb_free_frags(struct btusb_data *data)
 412 {
 413         unsigned long flags;
 414
 415         spin_lock_irqsave(&data->rxlock, flags);
 416
 417         kfree_skb(data->evt_skb);
 418         data->evt_skb = NULL;
 419
 420         kfree_skb(data->acl_skb);
 421         data->acl_skb = NULL;
 422
 423         kfree_skb(data->sco_skb);
 424         data->sco_skb = NULL;
 425
 426         spin_unlock_irqrestore(&data->rxlock, flags);
 427 }
 428
 429 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
 430 {
 431         struct sk_buff *skb;
 432         int err = 0;
 433
 434         spin_lock(&data->rxlock);
 435         skb = data->evt_skb;
 436
 437         while (count) {
 438                 int len;
 439
 440                 if (!skb) {
 441                         skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
 442                         if (!skb) {
 443                                 err = -ENOMEM;
 444                                 break;
 445                         }
 446
 447                         bt_cb(skb)->pkt_type = HCI_EVENT_PKT;
 448                         bt_cb(skb)->expect = HCI_EVENT_HDR_SIZE;
 449                 }
 450
 451                 len = min_t(uint, bt_cb(skb)->expect, count);
 452                 memcpy(skb_put(skb, len), buffer, len);
 453
 454                 count -= len;
 455                 buffer += len;
 456                 bt_cb(skb)->expect -= len;
 457
 458                 if (skb->len == HCI_EVENT_HDR_SIZE) {
 459                         /* Complete event header */
 460                         bt_cb(skb)->expect = hci_event_hdr(skb)->plen;
 461
 462                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 463                                 kfree_skb(skb);
 464                                 skb = NULL;
 465
 466                                 err = -EILSEQ;
 467                                 break;
 468                         }
 469                 }
 470
 471                 if (bt_cb(skb)->expect == 0) {
 472                         /* Complete frame */
 473                         data->recv_event(data->hdev, skb);
 474                         skb = NULL;
 475                 }
 476         }
 477
 478         data->evt_skb = skb;
 479         spin_unlock(&data->rxlock);
 480
 481         return err;
 482 }
 483
 484 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
 485 {
 486         struct sk_buff *skb;
 487         int err = 0;
 488
 489         spin_lock(&data->rxlock);
 490         skb = data->acl_skb;
 491
 492         while (count) {
 493                 int len;
 494
 495                 if (!skb) {
 496                         skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
 497                         if (!skb) {
 498                                 err = -ENOMEM;
 499                                 break;
 500                         }
 501
 502                         bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT;
 503                         bt_cb(skb)->expect = HCI_ACL_HDR_SIZE;
 504                 }
 505
 506                 len = min_t(uint, bt_cb(skb)->expect, count);
 507                 memcpy(skb_put(skb, len), buffer, len);
 508
 509                 count -= len;
 510                 buffer += len;
 511                 bt_cb(skb)->expect -= len;
 512
 513                 if (skb->len == HCI_ACL_HDR_SIZE) {
 514                         __le16 dlen = hci_acl_hdr(skb)->dlen;
 515
 516                         /* Complete ACL header */
 517                         bt_cb(skb)->expect = __le16_to_cpu(dlen);
 518
 519                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 520                                 kfree_skb(skb);
 521                                 skb = NULL;
 522
 523                                 err = -EILSEQ;
 524                                 break;
 525                         }
 526                 }
 527
 528                 if (bt_cb(skb)->expect == 0) {
 529                         /* Complete frame */
 530                         hci_recv_frame(data->hdev, skb);
 531                         skb = NULL;
 532                 }
 533         }
 534
 535         data->acl_skb = skb;
 536         spin_unlock(&data->rxlock);
 537
 538         return err;
 539 }
 540
 541 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
 542 {
 543         struct sk_buff *skb;
 544         int err = 0;
 545
 546         spin_lock(&data->rxlock);
 547         skb = data->sco_skb;
 548
 549         while (count) {
 550                 int len;
 551
 552                 if (!skb) {
 553                         skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
 554                         if (!skb) {
 555                                 err = -ENOMEM;
 556                                 break;
 557                         }
 558
 559                         bt_cb(skb)->pkt_type = HCI_SCODATA_PKT;
 560                         bt_cb(skb)->expect = HCI_SCO_HDR_SIZE;
 561                 }
 562
 563                 len = min_t(uint, bt_cb(skb)->expect, count);
 564                 memcpy(skb_put(skb, len), buffer, len);
 565
 566                 count -= len;
 567                 buffer += len;
 568                 bt_cb(skb)->expect -= len;
 569
 570                 if (skb->len == HCI_SCO_HDR_SIZE) {
 571                         /* Complete SCO header */
 572                         bt_cb(skb)->expect = hci_sco_hdr(skb)->dlen;
 573
 574                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 575                                 kfree_skb(skb);
 576                                 skb = NULL;
 577
 578                                 err = -EILSEQ;
 579                                 break;
 580                         }
 581                 }
 582
 583                 if (bt_cb(skb)->expect == 0) {
 584                         /* Complete frame */
 585                         hci_recv_frame(data->hdev, skb);
 586                         skb = NULL;
 587                 }
 588         }
 589
 590         data->sco_skb = skb;
 591         spin_unlock(&data->rxlock);
 592
 593         return err;
 594 }
 595
 596 static void btusb_intr_complete(struct urb *urb)
 597 {
 598         struct hci_dev *hdev = urb->context;
 599         struct btusb_data *data = hci_get_drvdata(hdev);
 600         int err;
 601
 602         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 603                urb->actual_length);
 604
 605         if (!test_bit(HCI_RUNNING, &hdev->flags))
 606                 return;
 607
 608         if (urb->status == 0) {
 609                 hdev->stat.byte_rx += urb->actual_length;
 610
 611                 if (btusb_recv_intr(data, urb->transfer_buffer,
 612                                     urb->actual_length) < 0) {
 613                         BT_ERR("%s corrupted event packet", hdev->name);
 614                         hdev->stat.err_rx++;
 615                 }
 616         } else if (urb->status == -ENOENT) {
 617                 /* Avoid suspend failed when usb_kill_urb */
 618                 return;
 619         }
 620
 621         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 622                 return;
 623
 624         usb_mark_last_busy(data->udev);
 625         usb_anchor_urb(urb, &data->intr_anchor);
 626
 627         err = usb_submit_urb(urb, GFP_ATOMIC);
 628         if (err < 0) {
 629                 /* -EPERM: urb is being killed;
 630                  * -ENODEV: device got disconnected */
 631                 if (err != -EPERM && err != -ENODEV)
 632                         BT_ERR("%s urb %p failed to resubmit (%d)",
 633                                hdev->name, urb, -err);
 634                 usb_unanchor_urb(urb);
 635         }
 636 }
 637
 638 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 639 {
 640         struct btusb_data *data = hci_get_drvdata(hdev);
 641         struct urb *urb;
 642         unsigned char *buf;
 643         unsigned int pipe;
 644         int err, size;
 645
 646         BT_DBG("%s", hdev->name);
 647
 648         if (!data->intr_ep)
 649                 return -ENODEV;
 650
 651         urb = usb_alloc_urb(0, mem_flags);
 652         if (!urb)
 653                 return -ENOMEM;
 654
 655         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 656
 657         buf = kmalloc(size, mem_flags);
 658         if (!buf) {
 659                 usb_free_urb(urb);
 660                 return -ENOMEM;
 661         }
 662
 663         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 664
 665         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 666                          btusb_intr_complete, hdev, data->intr_ep->bInterval);
 667
 668         urb->transfer_flags |= URB_FREE_BUFFER;
 669
 670         usb_anchor_urb(urb, &data->intr_anchor);
 671
 672         err = usb_submit_urb(urb, mem_flags);
 673         if (err < 0) {
 674                 if (err != -EPERM && err != -ENODEV)
 675                         BT_ERR("%s urb %p submission failed (%d)",
 676                                hdev->name, urb, -err);
 677                 usb_unanchor_urb(urb);
 678         }
 679
 680         usb_free_urb(urb);
 681
 682         return err;
 683 }
 684
 685 static void btusb_bulk_complete(struct urb *urb)
 686 {
 687         struct hci_dev *hdev = urb->context;
 688         struct btusb_data *data = hci_get_drvdata(hdev);
 689         int err;
 690
 691         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 692                urb->actual_length);
 693
 694         if (!test_bit(HCI_RUNNING, &hdev->flags))
 695                 return;
 696
 697         if (urb->status == 0) {
 698                 hdev->stat.byte_rx += urb->actual_length;
 699
 700                 if (data->recv_bulk(data, urb->transfer_buffer,
 701                                     urb->actual_length) < 0) {
 702                         BT_ERR("%s corrupted ACL packet", hdev->name);
 703                         hdev->stat.err_rx++;
 704                 }
 705         } else if (urb->status == -ENOENT) {
 706                 /* Avoid suspend failed when usb_kill_urb */
 707                 return;
 708         }
 709
 710         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 711                 return;
 712
 713         usb_anchor_urb(urb, &data->bulk_anchor);
 714         usb_mark_last_busy(data->udev);
 715
 716         err = usb_submit_urb(urb, GFP_ATOMIC);
 717         if (err < 0) {
 718                 /* -EPERM: urb is being killed;
 719                  * -ENODEV: device got disconnected */
 720                 if (err != -EPERM && err != -ENODEV)
 721                         BT_ERR("%s urb %p failed to resubmit (%d)",
 722                                hdev->name, urb, -err);
 723                 usb_unanchor_urb(urb);
 724         }
 725 }
 726
 727 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 728 {
 729         struct btusb_data *data = hci_get_drvdata(hdev);
 730         struct urb *urb;
 731         unsigned char *buf;
 732         unsigned int pipe;
 733         int err, size = HCI_MAX_FRAME_SIZE;
 734
 735         BT_DBG("%s", hdev->name);
 736
 737         if (!data->bulk_rx_ep)
 738                 return -ENODEV;
 739
 740         urb = usb_alloc_urb(0, mem_flags);
 741         if (!urb)
 742                 return -ENOMEM;
 743
 744         buf = kmalloc(size, mem_flags);
 745         if (!buf) {
 746                 usb_free_urb(urb);
 747                 return -ENOMEM;
 748         }
 749
 750         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 751
 752         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
 753                           btusb_bulk_complete, hdev);
 754
 755         urb->transfer_flags |= URB_FREE_BUFFER;
 756
 757         usb_mark_last_busy(data->udev);
 758         usb_anchor_urb(urb, &data->bulk_anchor);
 759
 760         err = usb_submit_urb(urb, mem_flags);
 761         if (err < 0) {
 762                 if (err != -EPERM && err != -ENODEV)
 763                         BT_ERR("%s urb %p submission failed (%d)",
 764                                hdev->name, urb, -err);
 765                 usb_unanchor_urb(urb);
 766         }
 767
 768         usb_free_urb(urb);
 769
 770         return err;
 771 }
 772
 773 static void btusb_isoc_complete(struct urb *urb)
 774 {
 775         struct hci_dev *hdev = urb->context;
 776         struct btusb_data *data = hci_get_drvdata(hdev);
 777         int i, err;
 778
 779         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 780                urb->actual_length);
 781
 782         if (!test_bit(HCI_RUNNING, &hdev->flags))
 783                 return;
 784
 785         if (urb->status == 0) {
 786                 for (i = 0; i < urb->number_of_packets; i++) {
 787                         unsigned int offset = urb->iso_frame_desc[i].offset;
 788                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 789
 790                         if (urb->iso_frame_desc[i].status)
 791                                 continue;
 792
 793                         hdev->stat.byte_rx += length;
 794
 795                         if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
 796                                             length) < 0) {
 797                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 798                                 hdev->stat.err_rx++;
 799                         }
 800                 }
 801         } else if (urb->status == -ENOENT) {
 802                 /* Avoid suspend failed when usb_kill_urb */
 803                 return;
 804         }
 805
 806         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 807                 return;
 808
 809         usb_anchor_urb(urb, &data->isoc_anchor);
 810
 811         err = usb_submit_urb(urb, GFP_ATOMIC);
 812         if (err < 0) {
 813                 /* -EPERM: urb is being killed;
 814                  * -ENODEV: device got disconnected */
 815                 if (err != -EPERM && err != -ENODEV)
 816                         BT_ERR("%s urb %p failed to resubmit (%d)",
 817                                hdev->name, urb, -err);
 818                 usb_unanchor_urb(urb);
 819         }
 820 }
 821
 822 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 823 {
 824         int i, offset = 0;
 825
 826         BT_DBG("len %d mtu %d", len, mtu);
 827
 828         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 829                                         i++, offset += mtu, len -= mtu) {
 830                 urb->iso_frame_desc[i].offset = offset;
 831                 urb->iso_frame_desc[i].length = mtu;
 832         }
 833
 834         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 835                 urb->iso_frame_desc[i].offset = offset;
 836                 urb->iso_frame_desc[i].length = len;
 837                 i++;
 838         }
 839
 840         urb->number_of_packets = i;
 841 }
 842
 843 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 844 {
 845         struct btusb_data *data = hci_get_drvdata(hdev);
 846         struct urb *urb;
 847         unsigned char *buf;
 848         unsigned int pipe;
 849         int err, size;
 850
 851         BT_DBG("%s", hdev->name);
 852
 853         if (!data->isoc_rx_ep)
 854                 return -ENODEV;
 855
 856         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 857         if (!urb)
 858                 return -ENOMEM;
 859
 860         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 861                                                 BTUSB_MAX_ISOC_FRAMES;
 862
 863         buf = kmalloc(size, mem_flags);
 864         if (!buf) {
 865                 usb_free_urb(urb);
 866                 return -ENOMEM;
 867         }
 868
 869         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 870
 871         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 872                          hdev, data->isoc_rx_ep->bInterval);
 873
 874         urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
 875
 876         __fill_isoc_descriptor(urb, size,
 877                                le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 878
 879         usb_anchor_urb(urb, &data->isoc_anchor);
 880
 881         err = usb_submit_urb(urb, mem_flags);
 882         if (err < 0) {
 883                 if (err != -EPERM && err != -ENODEV)
 884                         BT_ERR("%s urb %p submission failed (%d)",
 885                                hdev->name, urb, -err);
 886                 usb_unanchor_urb(urb);
 887         }
 888
 889         usb_free_urb(urb);
 890
 891         return err;
 892 }
 893
 894 static void btusb_diag_complete(struct urb *urb)
 895 {
 896         struct hci_dev *hdev = urb->context;
 897         struct btusb_data *data = hci_get_drvdata(hdev);
 898         int err;
 899
 900         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 901                urb->actual_length);
 902
 903         if (urb->status == 0) {
 904                 struct sk_buff *skb;
 905
 906                 skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC);
 907                 if (skb) {
 908                         memcpy(skb_put(skb, urb->actual_length),
 909                                urb->transfer_buffer, urb->actual_length);
 910                         hci_recv_diag(hdev, skb);
 911                 }
 912         } else if (urb->status == -ENOENT) {
 913                 /* Avoid suspend failed when usb_kill_urb */
 914                 return;
 915         }
 916
 917         if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags))
 918                 return;
 919
 920         usb_anchor_urb(urb, &data->diag_anchor);
 921         usb_mark_last_busy(data->udev);
 922
 923         err = usb_submit_urb(urb, GFP_ATOMIC);
 924         if (err < 0) {
 925                 /* -EPERM: urb is being killed;
 926                  * -ENODEV: device got disconnected */
 927                 if (err != -EPERM && err != -ENODEV)
 928                         BT_ERR("%s urb %p failed to resubmit (%d)",
 929                                hdev->name, urb, -err);
 930                 usb_unanchor_urb(urb);
 931         }
 932 }
 933
 934 static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags)
 935 {
 936         struct btusb_data *data = hci_get_drvdata(hdev);
 937         struct urb *urb;
 938         unsigned char *buf;
 939         unsigned int pipe;
 940         int err, size = HCI_MAX_FRAME_SIZE;
 941
 942         BT_DBG("%s", hdev->name);
 943
 944         if (!data->diag_rx_ep)
 945                 return -ENODEV;
 946
 947         urb = usb_alloc_urb(0, mem_flags);
 948         if (!urb)
 949                 return -ENOMEM;
 950
 951         buf = kmalloc(size, mem_flags);
 952         if (!buf) {
 953                 usb_free_urb(urb);
 954                 return -ENOMEM;
 955         }
 956
 957         pipe = usb_rcvbulkpipe(data->udev, data->diag_rx_ep->bEndpointAddress);
 958
 959         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
 960                           btusb_diag_complete, hdev);
 961
 962         urb->transfer_flags |= URB_FREE_BUFFER;
 963
 964         usb_mark_last_busy(data->udev);
 965         usb_anchor_urb(urb, &data->diag_anchor);
 966
 967         err = usb_submit_urb(urb, mem_flags);
 968         if (err < 0) {
 969                 if (err != -EPERM && err != -ENODEV)
 970                         BT_ERR("%s urb %p submission failed (%d)",
 971                                hdev->name, urb, -err);
 972                 usb_unanchor_urb(urb);
 973         }
 974
 975         usb_free_urb(urb);
 976
 977         return err;
 978 }
 979
 980 static void btusb_tx_complete(struct urb *urb)
 981 {
 982         struct sk_buff *skb = urb->context;
 983         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
 984         struct btusb_data *data = hci_get_drvdata(hdev);
 985
 986         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 987                urb->actual_length);
 988
 989         if (!test_bit(HCI_RUNNING, &hdev->flags))
 990                 goto done;
 991
 992         if (!urb->status)
 993                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 994         else
 995                 hdev->stat.err_tx++;
 996
 997 done:
 998         spin_lock(&data->txlock);
 999         data->tx_in_flight--;
1000         spin_unlock(&data->txlock);
1001
1002         kfree(urb->setup_packet);
1003
1004         kfree_skb(skb);
1005 }
1006
1007 static void btusb_isoc_tx_complete(struct urb *urb)
1008 {
1009         struct sk_buff *skb = urb->context;
1010         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1011
1012         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1013                urb->actual_length);
1014
1015         if (!test_bit(HCI_RUNNING, &hdev->flags))
1016                 goto done;
1017
1018         if (!urb->status)
1019                 hdev->stat.byte_tx += urb->transfer_buffer_length;
1020         else
1021                 hdev->stat.err_tx++;
1022
1023 done:
1024         kfree(urb->setup_packet);
1025
1026         kfree_skb(skb);
1027 }
1028
1029 static int btusb_open(struct hci_dev *hdev)
1030 {
1031         struct btusb_data *data = hci_get_drvdata(hdev);
1032         int err;
1033
1034         BT_DBG("%s", hdev->name);
1035
1036         /* Patching USB firmware files prior to starting any URBs of HCI path
1037          * It is more safe to use USB bulk channel for downloading USB patch
1038          */
1039         if (data->setup_on_usb) {
1040                 err = data->setup_on_usb(hdev);
1041                 if (err < 0)
1042                         return err;
1043         }
1044
1045         err = usb_autopm_get_interface(data->intf);
1046         if (err < 0)
1047                 return err;
1048
1049         data->intf->needs_remote_wakeup = 1;
1050
1051         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
1052                 goto done;
1053
1054         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
1055         if (err < 0)
1056                 goto failed;
1057
1058         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1059         if (err < 0) {
1060                 usb_kill_anchored_urbs(&data->intr_anchor);
1061                 goto failed;
1062         }
1063
1064         set_bit(BTUSB_BULK_RUNNING, &data->flags);
1065         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1066
1067         if (data->diag) {
1068                 if (!btusb_submit_diag_urb(hdev, GFP_KERNEL))
1069                         set_bit(BTUSB_DIAG_RUNNING, &data->flags);
1070         }
1071
1072 done:
1073         usb_autopm_put_interface(data->intf);
1074         return 0;
1075
1076 failed:
1077         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1078         usb_autopm_put_interface(data->intf);
1079         return err;
1080 }
1081
1082 static void btusb_stop_traffic(struct btusb_data *data)
1083 {
1084         usb_kill_anchored_urbs(&data->intr_anchor);
1085         usb_kill_anchored_urbs(&data->bulk_anchor);
1086         usb_kill_anchored_urbs(&data->isoc_anchor);
1087         usb_kill_anchored_urbs(&data->diag_anchor);
1088 }
1089
1090 static int btusb_close(struct hci_dev *hdev)
1091 {
1092         struct btusb_data *data = hci_get_drvdata(hdev);
1093         int err;
1094
1095         BT_DBG("%s", hdev->name);
1096
1097         cancel_work_sync(&data->work);
1098         cancel_work_sync(&data->waker);
1099
1100         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1101         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1102         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1103         clear_bit(BTUSB_DIAG_RUNNING, &data->flags);
1104
1105         btusb_stop_traffic(data);
1106         btusb_free_frags(data);
1107
1108         err = usb_autopm_get_interface(data->intf);
1109         if (err < 0)
1110                 goto failed;
1111
1112         data->intf->needs_remote_wakeup = 0;
1113         usb_autopm_put_interface(data->intf);
1114
1115 failed:
1116         usb_scuttle_anchored_urbs(&data->deferred);
1117         return 0;
1118 }
1119
1120 static int btusb_flush(struct hci_dev *hdev)
1121 {
1122         struct btusb_data *data = hci_get_drvdata(hdev);
1123
1124         BT_DBG("%s", hdev->name);
1125
1126         usb_kill_anchored_urbs(&data->tx_anchor);
1127         btusb_free_frags(data);
1128
1129         return 0;
1130 }
1131
1132 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
1133 {
1134         struct btusb_data *data = hci_get_drvdata(hdev);
1135         struct usb_ctrlrequest *dr;
1136         struct urb *urb;
1137         unsigned int pipe;
1138
1139         urb = usb_alloc_urb(0, GFP_KERNEL);
1140         if (!urb)
1141                 return ERR_PTR(-ENOMEM);
1142
1143         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
1144         if (!dr) {
1145                 usb_free_urb(urb);
1146                 return ERR_PTR(-ENOMEM);
1147         }
1148
1149         dr->bRequestType = data->cmdreq_type;
1150         dr->bRequest     = data->cmdreq;
1151         dr->wIndex       = 0;
1152         dr->wValue       = 0;
1153         dr->wLength      = __cpu_to_le16(skb->len);
1154
1155         pipe = usb_sndctrlpipe(data->udev, 0x00);
1156
1157         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
1158                              skb->data, skb->len, btusb_tx_complete, skb);
1159
1160         skb->dev = (void *)hdev;
1161
1162         return urb;
1163 }
1164
1165 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
1166 {
1167         struct btusb_data *data = hci_get_drvdata(hdev);
1168         struct urb *urb;
1169         unsigned int pipe;
1170
1171         if (!data->bulk_tx_ep)
1172                 return ERR_PTR(-ENODEV);
1173
1174         urb = usb_alloc_urb(0, GFP_KERNEL);
1175         if (!urb)
1176                 return ERR_PTR(-ENOMEM);
1177
1178         pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1179
1180         usb_fill_bulk_urb(urb, data->udev, pipe,
1181                           skb->data, skb->len, btusb_tx_complete, skb);
1182
1183         skb->dev = (void *)hdev;
1184
1185         return urb;
1186 }
1187
1188 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1189 {
1190         struct btusb_data *data = hci_get_drvdata(hdev);
1191         struct urb *urb;
1192         unsigned int pipe;
1193
1194         if (!data->isoc_tx_ep)
1195                 return ERR_PTR(-ENODEV);
1196
1197         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1198         if (!urb)
1199                 return ERR_PTR(-ENOMEM);
1200
1201         pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1202
1203         usb_fill_int_urb(urb, data->udev, pipe,
1204                          skb->data, skb->len, btusb_isoc_tx_complete,
1205                          skb, data->isoc_tx_ep->bInterval);
1206
1207         urb->transfer_flags  = URB_ISO_ASAP;
1208
1209         __fill_isoc_descriptor(urb, skb->len,
1210                                le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1211
1212         skb->dev = (void *)hdev;
1213
1214         return urb;
1215 }
1216
1217 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1218 {
1219         struct btusb_data *data = hci_get_drvdata(hdev);
1220         int err;
1221
1222         usb_anchor_urb(urb, &data->tx_anchor);
1223
1224         err = usb_submit_urb(urb, GFP_KERNEL);
1225         if (err < 0) {
1226                 if (err != -EPERM && err != -ENODEV)
1227                         BT_ERR("%s urb %p submission failed (%d)",
1228                                hdev->name, urb, -err);
1229                 kfree(urb->setup_packet);
1230                 usb_unanchor_urb(urb);
1231         } else {
1232                 usb_mark_last_busy(data->udev);
1233         }
1234
1235         usb_free_urb(urb);
1236         return err;
1237 }
1238
1239 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1240 {
1241         struct btusb_data *data = hci_get_drvdata(hdev);
1242         unsigned long flags;
1243         bool suspending;
1244
1245         spin_lock_irqsave(&data->txlock, flags);
1246         suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1247         if (!suspending)
1248                 data->tx_in_flight++;
1249         spin_unlock_irqrestore(&data->txlock, flags);
1250
1251         if (!suspending)
1252                 return submit_tx_urb(hdev, urb);
1253
1254         usb_anchor_urb(urb, &data->deferred);
1255         schedule_work(&data->waker);
1256
1257         usb_free_urb(urb);
1258         return 0;
1259 }
1260
1261 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1262 {
1263         struct urb *urb;
1264
1265         BT_DBG("%s", hdev->name);
1266
1267         switch (bt_cb(skb)->pkt_type) {
1268         case HCI_COMMAND_PKT:
1269                 urb = alloc_ctrl_urb(hdev, skb);
1270                 if (IS_ERR(urb))
1271                         return PTR_ERR(urb);
1272
1273                 hdev->stat.cmd_tx++;
1274                 return submit_or_queue_tx_urb(hdev, urb);
1275
1276         case HCI_ACLDATA_PKT:
1277                 urb = alloc_bulk_urb(hdev, skb);
1278                 if (IS_ERR(urb))
1279                         return PTR_ERR(urb);
1280
1281                 hdev->stat.acl_tx++;
1282                 return submit_or_queue_tx_urb(hdev, urb);
1283
1284         case HCI_SCODATA_PKT:
1285                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1286                         return -ENODEV;
1287
1288                 urb = alloc_isoc_urb(hdev, skb);
1289                 if (IS_ERR(urb))
1290                         return PTR_ERR(urb);
1291
1292                 hdev->stat.sco_tx++;
1293                 return submit_tx_urb(hdev, urb);
1294         }
1295
1296         return -EILSEQ;
1297 }
1298
1299 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1300 {
1301         struct btusb_data *data = hci_get_drvdata(hdev);
1302
1303         BT_DBG("%s evt %d", hdev->name, evt);
1304
1305         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1306                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1307                 schedule_work(&data->work);
1308         }
1309 }
1310
1311 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1312 {
1313         struct btusb_data *data = hci_get_drvdata(hdev);
1314         struct usb_interface *intf = data->isoc;
1315         struct usb_endpoint_descriptor *ep_desc;
1316         int i, err;
1317
1318         if (!data->isoc)
1319                 return -ENODEV;
1320
1321         err = usb_set_interface(data->udev, 1, altsetting);
1322         if (err < 0) {
1323                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
1324                 return err;
1325         }
1326
1327         data->isoc_altsetting = altsetting;
1328
1329         data->isoc_tx_ep = NULL;
1330         data->isoc_rx_ep = NULL;
1331
1332         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1333                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1334
1335                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1336                         data->isoc_tx_ep = ep_desc;
1337                         continue;
1338                 }
1339
1340                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1341                         data->isoc_rx_ep = ep_desc;
1342                         continue;
1343                 }
1344         }
1345
1346         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1347                 BT_ERR("%s invalid SCO descriptors", hdev->name);
1348                 return -ENODEV;
1349         }
1350
1351         return 0;
1352 }
1353
1354 static void btusb_work(struct work_struct *work)
1355 {
1356         struct btusb_data *data = container_of(work, struct btusb_data, work);
1357         struct hci_dev *hdev = data->hdev;
1358         int new_alts;
1359         int err;
1360
1361         if (data->sco_num > 0) {
1362                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1363                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1364                         if (err < 0) {
1365                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1366                                 usb_kill_anchored_urbs(&data->isoc_anchor);
1367                                 return;
1368                         }
1369
1370                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1371                 }
1372
1373                 if (hdev->voice_setting & 0x0020) {
1374                         static const int alts[3] = { 2, 4, 5 };
1375
1376                         new_alts = alts[data->sco_num - 1];
1377                 } else {
1378                         new_alts = data->sco_num;
1379                 }
1380
1381                 if (data->isoc_altsetting != new_alts) {
1382                         unsigned long flags;
1383
1384                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1385                         usb_kill_anchored_urbs(&data->isoc_anchor);
1386
1387                         /* When isochronous alternate setting needs to be
1388                          * changed, because SCO connection has been added
1389                          * or removed, a packet fragment may be left in the
1390                          * reassembling state. This could lead to wrongly
1391                          * assembled fragments.
1392                          *
1393                          * Clear outstanding fragment when selecting a new
1394                          * alternate setting.
1395                          */
1396                         spin_lock_irqsave(&data->rxlock, flags);
1397                         kfree_skb(data->sco_skb);
1398                         data->sco_skb = NULL;
1399                         spin_unlock_irqrestore(&data->rxlock, flags);
1400
1401                         if (__set_isoc_interface(hdev, new_alts) < 0)
1402                                 return;
1403                 }
1404
1405                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1406                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1407                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1408                         else
1409                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1410                 }
1411         } else {
1412                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1413                 usb_kill_anchored_urbs(&data->isoc_anchor);
1414
1415                 __set_isoc_interface(hdev, 0);
1416                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1417                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1418         }
1419 }
1420
1421 static void btusb_waker(struct work_struct *work)
1422 {
1423         struct btusb_data *data = container_of(work, struct btusb_data, waker);
1424         int err;
1425
1426         err = usb_autopm_get_interface(data->intf);
1427         if (err < 0)
1428                 return;
1429
1430         usb_autopm_put_interface(data->intf);
1431 }
1432
1433 static int btusb_setup_bcm92035(struct hci_dev *hdev)
1434 {
1435         struct sk_buff *skb;
1436         u8 val = 0x00;
1437
1438         BT_DBG("%s", hdev->name);
1439
1440         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1441         if (IS_ERR(skb))
1442                 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
1443         else
1444                 kfree_skb(skb);
1445
1446         return 0;
1447 }
1448
1449 static int btusb_setup_csr(struct hci_dev *hdev)
1450 {
1451         struct hci_rp_read_local_version *rp;
1452         struct sk_buff *skb;
1453
1454         BT_DBG("%s", hdev->name);
1455
1456         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1457                              HCI_INIT_TIMEOUT);
1458         if (IS_ERR(skb)) {
1459                 int err = PTR_ERR(skb);
1460                 BT_ERR("%s: CSR: Local version failed (%d)", hdev->name, err);
1461                 return err;
1462         }
1463
1464         if (skb->len != sizeof(struct hci_rp_read_local_version)) {
1465                 BT_ERR("%s: CSR: Local version length mismatch", hdev->name);
1466                 kfree_skb(skb);
1467                 return -EIO;
1468         }
1469
1470         rp = (struct hci_rp_read_local_version *)skb->data;
1471
1472         /* Detect controllers which aren't real CSR ones. */
1473         if (le16_to_cpu(rp->manufacturer) != 10 ||
1474             le16_to_cpu(rp->lmp_subver) == 0x0c5c) {
1475                 /* Clear the reset quirk since this is not an actual
1476                  * early Bluetooth 1.1 device from CSR.
1477                  */
1478                 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1479
1480                 /* These fake CSR controllers have all a broken
1481                  * stored link key handling and so just disable it.
1482                  */
1483                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
1484         }
1485
1486         kfree_skb(skb);
1487
1488         return 0;
1489 }
1490
1491 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1492                                                        struct intel_version *ver)
1493 {
1494         const struct firmware *fw;
1495         char fwname[64];
1496         int ret;
1497
1498         snprintf(fwname, sizeof(fwname),
1499                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1500                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
1501                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1502                  ver->fw_build_ww, ver->fw_build_yy);
1503
1504         ret = request_firmware(&fw, fwname, &hdev->dev);
1505         if (ret < 0) {
1506                 if (ret == -EINVAL) {
1507                         BT_ERR("%s Intel firmware file request failed (%d)",
1508                                hdev->name, ret);
1509                         return NULL;
1510                 }
1511
1512                 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1513                        hdev->name, fwname, ret);
1514
1515                 /* If the correct firmware patch file is not found, use the
1516                  * default firmware patch file instead
1517                  */
1518                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1519                          ver->hw_platform, ver->hw_variant);
1520                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1521                         BT_ERR("%s failed to open default Intel fw file: %s",
1522                                hdev->name, fwname);
1523                         return NULL;
1524                 }
1525         }
1526
1527         BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1528
1529         return fw;
1530 }
1531
1532 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1533                                       const struct firmware *fw,
1534                                       const u8 **fw_ptr, int *disable_patch)
1535 {
1536         struct sk_buff *skb;
1537         struct hci_command_hdr *cmd;
1538         const u8 *cmd_param;
1539         struct hci_event_hdr *evt = NULL;
1540         const u8 *evt_param = NULL;
1541         int remain = fw->size - (*fw_ptr - fw->data);
1542
1543         /* The first byte indicates the types of the patch command or event.
1544          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1545          * in the current firmware buffer doesn't start with 0x01 or
1546          * the size of remain buffer is smaller than HCI command header,
1547          * the firmware file is corrupted and it should stop the patching
1548          * process.
1549          */
1550         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1551                 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1552                 return -EINVAL;
1553         }
1554         (*fw_ptr)++;
1555         remain--;
1556
1557         cmd = (struct hci_command_hdr *)(*fw_ptr);
1558         *fw_ptr += sizeof(*cmd);
1559         remain -= sizeof(*cmd);
1560
1561         /* Ensure that the remain firmware data is long enough than the length
1562          * of command parameter. If not, the firmware file is corrupted.
1563          */
1564         if (remain < cmd->plen) {
1565                 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1566                 return -EFAULT;
1567         }
1568
1569         /* If there is a command that loads a patch in the firmware
1570          * file, then enable the patch upon success, otherwise just
1571          * disable the manufacturer mode, for example patch activation
1572          * is not required when the default firmware patch file is used
1573          * because there are no patch data to load.
1574          */
1575         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1576                 *disable_patch = 0;
1577
1578         cmd_param = *fw_ptr;
1579         *fw_ptr += cmd->plen;
1580         remain -= cmd->plen;
1581
1582         /* This reads the expected events when the above command is sent to the
1583          * device. Some vendor commands expects more than one events, for
1584          * example command status event followed by vendor specific event.
1585          * For this case, it only keeps the last expected event. so the command
1586          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1587          * last expected event.
1588          */
1589         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1590                 (*fw_ptr)++;
1591                 remain--;
1592
1593                 evt = (struct hci_event_hdr *)(*fw_ptr);
1594                 *fw_ptr += sizeof(*evt);
1595                 remain -= sizeof(*evt);
1596
1597                 if (remain < evt->plen) {
1598                         BT_ERR("%s Intel fw corrupted: invalid evt len",
1599                                hdev->name);
1600                         return -EFAULT;
1601                 }
1602
1603                 evt_param = *fw_ptr;
1604                 *fw_ptr += evt->plen;
1605                 remain -= evt->plen;
1606         }
1607
1608         /* Every HCI commands in the firmware file has its correspond event.
1609          * If event is not found or remain is smaller than zero, the firmware
1610          * file is corrupted.
1611          */
1612         if (!evt || !evt_param || remain < 0) {
1613                 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1614                 return -EFAULT;
1615         }
1616
1617         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1618                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1619         if (IS_ERR(skb)) {
1620                 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1621                        hdev->name, cmd->opcode, PTR_ERR(skb));
1622                 return PTR_ERR(skb);
1623         }
1624
1625         /* It ensures that the returned event matches the event data read from
1626          * the firmware file. At fist, it checks the length and then
1627          * the contents of the event.
1628          */
1629         if (skb->len != evt->plen) {
1630                 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1631                        le16_to_cpu(cmd->opcode));
1632                 kfree_skb(skb);
1633                 return -EFAULT;
1634         }
1635
1636         if (memcmp(skb->data, evt_param, evt->plen)) {
1637                 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1638                        hdev->name, le16_to_cpu(cmd->opcode));
1639                 kfree_skb(skb);
1640                 return -EFAULT;
1641         }
1642         kfree_skb(skb);
1643
1644         return 0;
1645 }
1646
1647 static int btusb_setup_intel(struct hci_dev *hdev)
1648 {
1649         struct sk_buff *skb;
1650         const struct firmware *fw;
1651         const u8 *fw_ptr;
1652         int disable_patch;
1653         struct intel_version *ver;
1654
1655         const u8 mfg_enable[] = { 0x01, 0x00 };
1656         const u8 mfg_disable[] = { 0x00, 0x00 };
1657         const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
1658         const u8 mfg_reset_activate[] = { 0x00, 0x02 };
1659
1660         BT_DBG("%s", hdev->name);
1661
1662         /* The controller has a bug with the first HCI command sent to it
1663          * returning number of completed commands as zero. This would stall the
1664          * command processing in the Bluetooth core.
1665          *
1666          * As a workaround, send HCI Reset command first which will reset the
1667          * number of completed commands and allow normal command processing
1668          * from now on.
1669          */
1670         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1671         if (IS_ERR(skb)) {
1672                 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1673                        hdev->name, PTR_ERR(skb));
1674                 return PTR_ERR(skb);
1675         }
1676         kfree_skb(skb);
1677
1678         /* Read Intel specific controller version first to allow selection of
1679          * which firmware file to load.
1680          *
1681          * The returned information are hardware variant and revision plus
1682          * firmware variant, revision and build number.
1683          */
1684         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1685         if (IS_ERR(skb)) {
1686                 BT_ERR("%s reading Intel fw version command failed (%ld)",
1687                        hdev->name, PTR_ERR(skb));
1688                 return PTR_ERR(skb);
1689         }
1690
1691         if (skb->len != sizeof(*ver)) {
1692                 BT_ERR("%s Intel version event length mismatch", hdev->name);
1693                 kfree_skb(skb);
1694                 return -EIO;
1695         }
1696
1697         ver = (struct intel_version *)skb->data;
1698
1699         BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1700                 hdev->name, ver->hw_platform, ver->hw_variant,
1701                 ver->hw_revision, ver->fw_variant,  ver->fw_revision,
1702                 ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
1703                 ver->fw_patch_num);
1704
1705         /* fw_patch_num indicates the version of patch the device currently
1706          * have. If there is no patch data in the device, it is always 0x00.
1707          * So, if it is other than 0x00, no need to patch the device again.
1708          */
1709         if (ver->fw_patch_num) {
1710                 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1711                         hdev->name, ver->fw_patch_num);
1712                 kfree_skb(skb);
1713                 goto complete;
1714         }
1715
1716         /* Opens the firmware patch file based on the firmware version read
1717          * from the controller. If it fails to open the matching firmware
1718          * patch file, it tries to open the default firmware patch file.
1719          * If no patch file is found, allow the device to operate without
1720          * a patch.
1721          */
1722         fw = btusb_setup_intel_get_fw(hdev, ver);
1723         if (!fw) {
1724                 kfree_skb(skb);
1725                 goto complete;
1726         }
1727         fw_ptr = fw->data;
1728
1729         kfree_skb(skb);
1730
1731         /* This Intel specific command enables the manufacturer mode of the
1732          * controller.
1733          *
1734          * Only while this mode is enabled, the driver can download the
1735          * firmware patch data and configuration parameters.
1736          */
1737         skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
1738         if (IS_ERR(skb)) {
1739                 BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
1740                        hdev->name, PTR_ERR(skb));
1741                 release_firmware(fw);
1742                 return PTR_ERR(skb);
1743         }
1744
1745         kfree_skb(skb);
1746
1747         disable_patch = 1;
1748
1749         /* The firmware data file consists of list of Intel specific HCI
1750          * commands and its expected events. The first byte indicates the
1751          * type of the message, either HCI command or HCI event.
1752          *
1753          * It reads the command and its expected event from the firmware file,
1754          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1755          * the returned event is compared with the event read from the firmware
1756          * file and it will continue until all the messages are downloaded to
1757          * the controller.
1758          *
1759          * Once the firmware patching is completed successfully,
1760          * the manufacturer mode is disabled with reset and activating the
1761          * downloaded patch.
1762          *
1763          * If the firmware patching fails, the manufacturer mode is
1764          * disabled with reset and deactivating the patch.
1765          *
1766          * If the default patch file is used, no reset is done when disabling
1767          * the manufacturer.
1768          */
1769         while (fw->size > fw_ptr - fw->data) {
1770                 int ret;
1771
1772                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1773                                                  &disable_patch);
1774                 if (ret < 0)
1775                         goto exit_mfg_deactivate;
1776         }
1777
1778         release_firmware(fw);
1779
1780         if (disable_patch)
1781                 goto exit_mfg_disable;
1782
1783         /* Patching completed successfully and disable the manufacturer mode
1784          * with reset and activate the downloaded firmware patches.
1785          */
1786         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
1787                              mfg_reset_activate, HCI_INIT_TIMEOUT);
1788         if (IS_ERR(skb)) {
1789                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1790                        hdev->name, PTR_ERR(skb));
1791                 return PTR_ERR(skb);
1792         }
1793         kfree_skb(skb);
1794
1795         BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1796                 hdev->name);
1797
1798         goto complete;
1799
1800 exit_mfg_disable:
1801         /* Disable the manufacturer mode without reset */
1802         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
1803                              HCI_INIT_TIMEOUT);
1804         if (IS_ERR(skb)) {
1805                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1806                        hdev->name, PTR_ERR(skb));
1807                 return PTR_ERR(skb);
1808         }
1809         kfree_skb(skb);
1810
1811         BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1812
1813         goto complete;
1814
1815 exit_mfg_deactivate:
1816         release_firmware(fw);
1817
1818         /* Patching failed. Disable the manufacturer mode with reset and
1819          * deactivate the downloaded firmware patches.
1820          */
1821         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
1822                              mfg_reset_deactivate, HCI_INIT_TIMEOUT);
1823         if (IS_ERR(skb)) {
1824                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1825                        hdev->name, PTR_ERR(skb));
1826                 return PTR_ERR(skb);
1827         }
1828         kfree_skb(skb);
1829
1830         BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1831                 hdev->name);
1832
1833 complete:
1834         /* Set the event mask for Intel specific vendor events. This enables
1835          * a few extra events that are useful during general operation.
1836          */
1837         btintel_set_event_mask_mfg(hdev, false);
1838
1839         btintel_check_bdaddr(hdev);
1840         return 0;
1841 }
1842
1843 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
1844 {
1845         struct sk_buff *skb;
1846         struct hci_event_hdr *hdr;
1847         struct hci_ev_cmd_complete *evt;
1848
1849         skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_ATOMIC);
1850         if (!skb)
1851                 return -ENOMEM;
1852
1853         hdr = (struct hci_event_hdr *)skb_put(skb, sizeof(*hdr));
1854         hdr->evt = HCI_EV_CMD_COMPLETE;
1855         hdr->plen = sizeof(*evt) + 1;
1856
1857         evt = (struct hci_ev_cmd_complete *)skb_put(skb, sizeof(*evt));
1858         evt->ncmd = 0x01;
1859         evt->opcode = cpu_to_le16(opcode);
1860
1861         *skb_put(skb, 1) = 0x00;
1862
1863         bt_cb(skb)->pkt_type = HCI_EVENT_PKT;
1864
1865         return hci_recv_frame(hdev, skb);
1866 }
1867
1868 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
1869                                  int count)
1870 {
1871         /* When the device is in bootloader mode, then it can send
1872          * events via the bulk endpoint. These events are treated the
1873          * same way as the ones received from the interrupt endpoint.
1874          */
1875         if (test_bit(BTUSB_BOOTLOADER, &data->flags))
1876                 return btusb_recv_intr(data, buffer, count);
1877
1878         return btusb_recv_bulk(data, buffer, count);
1879 }
1880
1881 static void btusb_intel_bootup(struct btusb_data *data, const void *ptr,
1882                                unsigned int len)
1883 {
1884         const struct intel_bootup *evt = ptr;
1885
1886         if (len != sizeof(*evt))
1887                 return;
1888
1889         if (test_and_clear_bit(BTUSB_BOOTING, &data->flags)) {
1890                 smp_mb__after_atomic();
1891                 wake_up_bit(&data->flags, BTUSB_BOOTING);
1892         }
1893 }
1894
1895 static void btusb_intel_secure_send_result(struct btusb_data *data,
1896                                            const void *ptr, unsigned int len)
1897 {
1898         const struct intel_secure_send_result *evt = ptr;
1899
1900         if (len != sizeof(*evt))
1901                 return;
1902
1903         if (evt->result)
1904                 set_bit(BTUSB_FIRMWARE_FAILED, &data->flags);
1905
1906         if (test_and_clear_bit(BTUSB_DOWNLOADING, &data->flags) &&
1907             test_bit(BTUSB_FIRMWARE_LOADED, &data->flags)) {
1908                 smp_mb__after_atomic();
1909                 wake_up_bit(&data->flags, BTUSB_DOWNLOADING);
1910         }
1911 }
1912
1913 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
1914 {
1915         struct btusb_data *data = hci_get_drvdata(hdev);
1916
1917         if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1918                 struct hci_event_hdr *hdr = (void *)skb->data;
1919
1920                 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
1921                     hdr->plen > 0) {
1922                         const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
1923                         unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
1924
1925                         switch (skb->data[2]) {
1926                         case 0x02:
1927                                 /* When switching to the operational firmware
1928                                  * the device sends a vendor specific event
1929                                  * indicating that the bootup completed.
1930                                  */
1931                                 btusb_intel_bootup(data, ptr, len);
1932                                 break;
1933                         case 0x06:
1934                                 /* When the firmware loading completes the
1935                                  * device sends out a vendor specific event
1936                                  * indicating the result of the firmware
1937                                  * loading.
1938                                  */
1939                                 btusb_intel_secure_send_result(data, ptr, len);
1940                                 break;
1941                         }
1942                 }
1943         }
1944
1945         return hci_recv_frame(hdev, skb);
1946 }
1947
1948 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
1949 {
1950         struct btusb_data *data = hci_get_drvdata(hdev);
1951         struct urb *urb;
1952
1953         BT_DBG("%s", hdev->name);
1954
1955         switch (bt_cb(skb)->pkt_type) {
1956         case HCI_COMMAND_PKT:
1957                 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1958                         struct hci_command_hdr *cmd = (void *)skb->data;
1959                         __u16 opcode = le16_to_cpu(cmd->opcode);
1960
1961                         /* When in bootloader mode and the command 0xfc09
1962                          * is received, it needs to be send down the
1963                          * bulk endpoint. So allocate a bulk URB instead.
1964                          */
1965                         if (opcode == 0xfc09)
1966                                 urb = alloc_bulk_urb(hdev, skb);
1967                         else
1968                                 urb = alloc_ctrl_urb(hdev, skb);
1969
1970                         /* When the 0xfc01 command is issued to boot into
1971                          * the operational firmware, it will actually not
1972                          * send a command complete event. To keep the flow
1973                          * control working inject that event here.
1974                          */
1975                         if (opcode == 0xfc01)
1976                                 inject_cmd_complete(hdev, opcode);
1977                 } else {
1978                         urb = alloc_ctrl_urb(hdev, skb);
1979                 }
1980                 if (IS_ERR(urb))
1981                         return PTR_ERR(urb);
1982
1983                 hdev->stat.cmd_tx++;
1984                 return submit_or_queue_tx_urb(hdev, urb);
1985
1986         case HCI_ACLDATA_PKT:
1987                 urb = alloc_bulk_urb(hdev, skb);
1988                 if (IS_ERR(urb))
1989                         return PTR_ERR(urb);
1990
1991                 hdev->stat.acl_tx++;
1992                 return submit_or_queue_tx_urb(hdev, urb);
1993
1994         case HCI_SCODATA_PKT:
1995                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1996                         return -ENODEV;
1997
1998                 urb = alloc_isoc_urb(hdev, skb);
1999                 if (IS_ERR(urb))
2000                         return PTR_ERR(urb);
2001
2002                 hdev->stat.sco_tx++;
2003                 return submit_tx_urb(hdev, urb);
2004         }
2005
2006         return -EILSEQ;
2007 }
2008
2009 static int btusb_setup_intel_new(struct hci_dev *hdev)
2010 {
2011         static const u8 reset_param[] = { 0x00, 0x01, 0x00, 0x01,
2012                                           0x00, 0x08, 0x04, 0x00 };
2013         struct btusb_data *data = hci_get_drvdata(hdev);
2014         struct sk_buff *skb;
2015         struct intel_version *ver;
2016         struct intel_boot_params *params;
2017         const struct firmware *fw;
2018         const u8 *fw_ptr;
2019         u32 frag_len;
2020         char fwname[64];
2021         ktime_t calltime, delta, rettime;
2022         unsigned long long duration;
2023         int err;
2024
2025         BT_DBG("%s", hdev->name);
2026
2027         calltime = ktime_get();
2028
2029         /* Read the Intel version information to determine if the device
2030          * is in bootloader mode or if it already has operational firmware
2031          * loaded.
2032          */
2033         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
2034         if (IS_ERR(skb)) {
2035                 BT_ERR("%s: Reading Intel version information failed (%ld)",
2036                        hdev->name, PTR_ERR(skb));
2037                 return PTR_ERR(skb);
2038         }
2039
2040         if (skb->len != sizeof(*ver)) {
2041                 BT_ERR("%s: Intel version event size mismatch", hdev->name);
2042                 kfree_skb(skb);
2043                 return -EILSEQ;
2044         }
2045
2046         ver = (struct intel_version *)skb->data;
2047
2048         /* The hardware platform number has a fixed value of 0x37 and
2049          * for now only accept this single value.
2050          */
2051         if (ver->hw_platform != 0x37) {
2052                 BT_ERR("%s: Unsupported Intel hardware platform (%u)",
2053                        hdev->name, ver->hw_platform);
2054                 kfree_skb(skb);
2055                 return -EINVAL;
2056         }
2057
2058         /* At the moment only the hardware variant iBT 3.0 (LnP/SfP) is
2059          * supported by this firmware loading method. This check has been
2060          * put in place to ensure correct forward compatibility options
2061          * when newer hardware variants come along.
2062          */
2063         if (ver->hw_variant != 0x0b) {
2064                 BT_ERR("%s: Unsupported Intel hardware variant (%u)",
2065                        hdev->name, ver->hw_variant);
2066                 kfree_skb(skb);
2067                 return -EINVAL;
2068         }
2069
2070         btintel_version_info(hdev, ver);
2071
2072         /* The firmware variant determines if the device is in bootloader
2073          * mode or is running operational firmware. The value 0x06 identifies
2074          * the bootloader and the value 0x23 identifies the operational
2075          * firmware.
2076          *
2077          * When the operational firmware is already present, then only
2078          * the check for valid Bluetooth device address is needed. This
2079          * determines if the device will be added as configured or
2080          * unconfigured controller.
2081          *
2082          * It is not possible to use the Secure Boot Parameters in this
2083          * case since that command is only available in bootloader mode.
2084          */
2085         if (ver->fw_variant == 0x23) {
2086                 kfree_skb(skb);
2087                 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2088                 btintel_check_bdaddr(hdev);
2089                 return 0;
2090         }
2091
2092         /* If the device is not in bootloader mode, then the only possible
2093          * choice is to return an error and abort the device initialization.
2094          */
2095         if (ver->fw_variant != 0x06) {
2096                 BT_ERR("%s: Unsupported Intel firmware variant (%u)",
2097                        hdev->name, ver->fw_variant);
2098                 kfree_skb(skb);
2099                 return -ENODEV;
2100         }
2101
2102         kfree_skb(skb);
2103
2104         /* Read the secure boot parameters to identify the operating
2105          * details of the bootloader.
2106          */
2107         skb = __hci_cmd_sync(hdev, 0xfc0d, 0, NULL, HCI_INIT_TIMEOUT);
2108         if (IS_ERR(skb)) {
2109                 BT_ERR("%s: Reading Intel boot parameters failed (%ld)",
2110                        hdev->name, PTR_ERR(skb));
2111                 return PTR_ERR(skb);
2112         }
2113
2114         if (skb->len != sizeof(*params)) {
2115                 BT_ERR("%s: Intel boot parameters size mismatch", hdev->name);
2116                 kfree_skb(skb);
2117                 return -EILSEQ;
2118         }
2119
2120         params = (struct intel_boot_params *)skb->data;
2121
2122         BT_INFO("%s: Device revision is %u", hdev->name,
2123                 le16_to_cpu(params->dev_revid));
2124
2125         BT_INFO("%s: Secure boot is %s", hdev->name,
2126                 params->secure_boot ? "enabled" : "disabled");
2127
2128         BT_INFO("%s: OTP lock is %s", hdev->name,
2129                 params->otp_lock ? "enabled" : "disabled");
2130
2131         BT_INFO("%s: API lock is %s", hdev->name,
2132                 params->api_lock ? "enabled" : "disabled");
2133
2134         BT_INFO("%s: Debug lock is %s", hdev->name,
2135                 params->debug_lock ? "enabled" : "disabled");
2136
2137         BT_INFO("%s: Minimum firmware build %u week %u %u", hdev->name,
2138                 params->min_fw_build_nn, params->min_fw_build_cw,
2139                 2000 + params->min_fw_build_yy);
2140
2141         /* It is required that every single firmware fragment is acknowledged
2142          * with a command complete event. If the boot parameters indicate
2143          * that this bootloader does not send them, then abort the setup.
2144          */
2145         if (params->limited_cce != 0x00) {
2146                 BT_ERR("%s: Unsupported Intel firmware loading method (%u)",
2147                        hdev->name, params->limited_cce);
2148                 kfree_skb(skb);
2149                 return -EINVAL;
2150         }
2151
2152         /* If the OTP has no valid Bluetooth device address, then there will
2153          * also be no valid address for the operational firmware.
2154          */
2155         if (!bacmp(&params->otp_bdaddr, BDADDR_ANY)) {
2156                 BT_INFO("%s: No device address configured", hdev->name);
2157                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2158         }
2159
2160         /* With this Intel bootloader only the hardware variant and device
2161          * revision information are used to select the right firmware.
2162          *
2163          * Currently this bootloader support is limited to hardware variant
2164          * iBT 3.0 (LnP/SfP) which is identified by the value 11 (0x0b).
2165          */
2166         snprintf(fwname, sizeof(fwname), "intel/ibt-11-%u.sfi",
2167                  le16_to_cpu(params->dev_revid));
2168
2169         err = request_firmware(&fw, fwname, &hdev->dev);
2170         if (err < 0) {
2171                 BT_ERR("%s: Failed to load Intel firmware file (%d)",
2172                        hdev->name, err);
2173                 kfree_skb(skb);
2174                 return err;
2175         }
2176
2177         BT_INFO("%s: Found device firmware: %s", hdev->name, fwname);
2178
2179         /* Save the DDC file name for later use to apply once the firmware
2180          * downloading is done.
2181          */
2182         snprintf(fwname, sizeof(fwname), "intel/ibt-11-%u.ddc",
2183                  le16_to_cpu(params->dev_revid));
2184
2185         kfree_skb(skb);
2186
2187         if (fw->size < 644) {
2188                 BT_ERR("%s: Invalid size of firmware file (%zu)",
2189                        hdev->name, fw->size);
2190                 err = -EBADF;
2191                 goto done;
2192         }
2193
2194         set_bit(BTUSB_DOWNLOADING, &data->flags);
2195
2196         /* Start the firmware download transaction with the Init fragment
2197          * represented by the 128 bytes of CSS header.
2198          */
2199         err = btintel_secure_send(hdev, 0x00, 128, fw->data);
2200         if (err < 0) {
2201                 BT_ERR("%s: Failed to send firmware header (%d)",
2202                        hdev->name, err);
2203                 goto done;
2204         }
2205
2206         /* Send the 256 bytes of public key information from the firmware
2207          * as the PKey fragment.
2208          */
2209         err = btintel_secure_send(hdev, 0x03, 256, fw->data + 128);
2210         if (err < 0) {
2211                 BT_ERR("%s: Failed to send firmware public key (%d)",
2212                        hdev->name, err);
2213                 goto done;
2214         }
2215
2216         /* Send the 256 bytes of signature information from the firmware
2217          * as the Sign fragment.
2218          */
2219         err = btintel_secure_send(hdev, 0x02, 256, fw->data + 388);
2220         if (err < 0) {
2221                 BT_ERR("%s: Failed to send firmware signature (%d)",
2222                        hdev->name, err);
2223                 goto done;
2224         }
2225
2226         fw_ptr = fw->data + 644;
2227         frag_len = 0;
2228
2229         while (fw_ptr - fw->data < fw->size) {
2230                 struct hci_command_hdr *cmd = (void *)(fw_ptr + frag_len);
2231
2232                 frag_len += sizeof(*cmd) + cmd->plen;
2233
2234                 /* The parameter length of the secure send command requires
2235                  * a 4 byte alignment. It happens so that the firmware file
2236                  * contains proper Intel_NOP commands to align the fragments
2237                  * as needed.
2238                  *
2239                  * Send set of commands with 4 byte alignment from the
2240                  * firmware data buffer as a single Data fragement.
2241                  */
2242                 if (!(frag_len % 4)) {
2243                         err = btintel_secure_send(hdev, 0x01, frag_len, fw_ptr);
2244                         if (err < 0) {
2245                                 BT_ERR("%s: Failed to send firmware data (%d)",
2246                                        hdev->name, err);
2247                                 goto done;
2248                         }
2249
2250                         fw_ptr += frag_len;
2251                         frag_len = 0;
2252                 }
2253         }
2254
2255         set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2256
2257         BT_INFO("%s: Waiting for firmware download to complete", hdev->name);
2258
2259         /* Before switching the device into operational mode and with that
2260          * booting the loaded firmware, wait for the bootloader notification
2261          * that all fragments have been successfully received.
2262          *
2263          * When the event processing receives the notification, then the
2264          * BTUSB_DOWNLOADING flag will be cleared.
2265          *
2266          * The firmware loading should not take longer than 5 seconds
2267          * and thus just timeout if that happens and fail the setup
2268          * of this device.
2269          */
2270         err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
2271                                   TASK_INTERRUPTIBLE,
2272                                   msecs_to_jiffies(5000));
2273         if (err == 1) {
2274                 BT_ERR("%s: Firmware loading interrupted", hdev->name);
2275                 err = -EINTR;
2276                 goto done;
2277         }
2278
2279         if (err) {
2280                 BT_ERR("%s: Firmware loading timeout", hdev->name);
2281                 err = -ETIMEDOUT;
2282                 goto done;
2283         }
2284
2285         if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) {
2286                 BT_ERR("%s: Firmware loading failed", hdev->name);
2287                 err = -ENOEXEC;
2288                 goto done;
2289         }
2290
2291         rettime = ktime_get();
2292         delta = ktime_sub(rettime, calltime);
2293         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2294
2295         BT_INFO("%s: Firmware loaded in %llu usecs", hdev->name, duration);
2296
2297 done:
2298         release_firmware(fw);
2299
2300         if (err < 0)
2301                 return err;
2302
2303         calltime = ktime_get();
2304
2305         set_bit(BTUSB_BOOTING, &data->flags);
2306
2307         skb = __hci_cmd_sync(hdev, 0xfc01, sizeof(reset_param), reset_param,
2308                              HCI_INIT_TIMEOUT);
2309         if (IS_ERR(skb))
2310                 return PTR_ERR(skb);
2311
2312         kfree_skb(skb);
2313
2314         /* The bootloader will not indicate when the device is ready. This
2315          * is done by the operational firmware sending bootup notification.
2316          *
2317          * Booting into operational firmware should not take longer than
2318          * 1 second. However if that happens, then just fail the setup
2319          * since something went wrong.
2320          */
2321         BT_INFO("%s: Waiting for device to boot", hdev->name);
2322
2323         err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING,
2324                                   TASK_INTERRUPTIBLE,
2325                                   msecs_to_jiffies(1000));
2326
2327         if (err == 1) {
2328                 BT_ERR("%s: Device boot interrupted", hdev->name);
2329                 return -EINTR;
2330         }
2331
2332         if (err) {
2333                 BT_ERR("%s: Device boot timeout", hdev->name);
2334                 return -ETIMEDOUT;
2335         }
2336
2337         rettime = ktime_get();
2338         delta = ktime_sub(rettime, calltime);
2339         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2340
2341         BT_INFO("%s: Device booted in %llu usecs", hdev->name, duration);
2342
2343         clear_bit(BTUSB_BOOTLOADER, &data->flags);
2344
2345         /* Once the device is running in operational mode, it needs to apply
2346          * the device configuration (DDC) parameters.
2347          *
2348          * The device can work without DDC parameters, so even if it fails
2349          * to load the file, no need to fail the setup.
2350          */
2351         btintel_load_ddc_config(hdev, fwname);
2352
2353         /* Set the event mask for Intel specific vendor events. This enables
2354          * a few extra events that are useful during general operation. It
2355          * does not enable any debugging related events.
2356          *
2357          * The device will function correctly without these events enabled
2358          * and thus no need to fail the setup.
2359          */
2360         btintel_set_event_mask(hdev, false);
2361
2362         return 0;
2363 }
2364
2365 static int btusb_shutdown_intel(struct hci_dev *hdev)
2366 {
2367         struct sk_buff *skb;
2368         long ret;
2369
2370         /* Some platforms have an issue with BT LED when the interface is
2371          * down or BT radio is turned off, which takes 5 seconds to BT LED
2372          * goes off. This command turns off the BT LED immediately.
2373          */
2374         skb = __hci_cmd_sync(hdev, 0xfc3f, 0, NULL, HCI_INIT_TIMEOUT);
2375         if (IS_ERR(skb)) {
2376                 ret = PTR_ERR(skb);
2377                 BT_ERR("%s: turning off Intel device LED failed (%ld)",
2378                        hdev->name, ret);
2379                 return ret;
2380         }
2381         kfree_skb(skb);
2382
2383         return 0;
2384 }
2385
2386 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
2387                                     const bdaddr_t *bdaddr)
2388 {
2389         struct sk_buff *skb;
2390         u8 buf[8];
2391         long ret;
2392
2393         buf[0] = 0xfe;
2394         buf[1] = sizeof(bdaddr_t);
2395         memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
2396
2397         skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2398         if (IS_ERR(skb)) {
2399                 ret = PTR_ERR(skb);
2400                 BT_ERR("%s: changing Marvell device address failed (%ld)",
2401                        hdev->name, ret);
2402                 return ret;
2403         }
2404         kfree_skb(skb);
2405
2406         return 0;
2407 }
2408
2409 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
2410                                     const bdaddr_t *bdaddr)
2411 {
2412         struct sk_buff *skb;
2413         u8 buf[10];
2414         long ret;
2415
2416         buf[0] = 0x01;
2417         buf[1] = 0x01;
2418         buf[2] = 0x00;
2419         buf[3] = sizeof(bdaddr_t);
2420         memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
2421
2422         skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2423         if (IS_ERR(skb)) {
2424                 ret = PTR_ERR(skb);
2425                 BT_ERR("%s: Change address command failed (%ld)",
2426                        hdev->name, ret);
2427                 return ret;
2428         }
2429         kfree_skb(skb);
2430
2431         return 0;
2432 }
2433
2434 #define QCA_DFU_PACKET_LEN      4096
2435
2436 #define QCA_GET_TARGET_VERSION  0x09
2437 #define QCA_CHECK_STATUS        0x05
2438 #define QCA_DFU_DOWNLOAD        0x01
2439
2440 #define QCA_SYSCFG_UPDATED      0x40
2441 #define QCA_PATCH_UPDATED       0x80
2442 #define QCA_DFU_TIMEOUT         3000
2443
2444 struct qca_version {
2445         __le32  rom_version;
2446         __le32  patch_version;
2447         __le32  ram_version;
2448         __le32  ref_clock;
2449         __u8    reserved[4];
2450 } __packed;
2451
2452 struct qca_rampatch_version {
2453         __le16  rom_version;
2454         __le16  patch_version;
2455 } __packed;
2456
2457 struct qca_device_info {
2458         u32     rom_version;
2459         u8      rampatch_hdr;   /* length of header in rampatch */
2460         u8      nvm_hdr;        /* length of header in NVM */
2461         u8      ver_offset;     /* offset of version structure in rampatch */
2462 };
2463
2464 static const struct qca_device_info qca_devices_table[] = {
2465         { 0x00000100, 20, 4, 10 }, /* Rome 1.0 */
2466         { 0x00000101, 20, 4, 10 }, /* Rome 1.1 */
2467         { 0x00000200, 28, 4, 18 }, /* Rome 2.0 */
2468         { 0x00000201, 28, 4, 18 }, /* Rome 2.1 */
2469         { 0x00000300, 28, 4, 18 }, /* Rome 3.0 */
2470         { 0x00000302, 28, 4, 18 }, /* Rome 3.2 */
2471 };
2472
2473 static int btusb_qca_send_vendor_req(struct hci_dev *hdev, u8 request,
2474                                      void *data, u16 size)
2475 {
2476         struct btusb_data *btdata = hci_get_drvdata(hdev);
2477         struct usb_device *udev = btdata->udev;
2478         int pipe, err;
2479         u8 *buf;
2480
2481         buf = kmalloc(size, GFP_KERNEL);
2482         if (!buf)
2483                 return -ENOMEM;
2484
2485         /* Found some of USB hosts have IOT issues with ours so that we should
2486          * not wait until HCI layer is ready.
2487          */
2488         pipe = usb_rcvctrlpipe(udev, 0);
2489         err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
2490                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2491         if (err < 0) {
2492                 BT_ERR("%s: Failed to access otp area (%d)", hdev->name, err);
2493                 goto done;
2494         }
2495
2496         memcpy(data, buf, size);
2497
2498 done:
2499         kfree(buf);
2500
2501         return err;
2502 }
2503
2504 static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
2505                                        const struct firmware *firmware,
2506                                        size_t hdr_size)
2507 {
2508         struct btusb_data *btdata = hci_get_drvdata(hdev);
2509         struct usb_device *udev = btdata->udev;
2510         size_t count, size, sent = 0;
2511         int pipe, len, err;
2512         u8 *buf;
2513
2514         buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
2515         if (!buf)
2516                 return -ENOMEM;
2517
2518         count = firmware->size;
2519
2520         size = min_t(size_t, count, hdr_size);
2521         memcpy(buf, firmware->data, size);
2522
2523         /* USB patches should go down to controller through USB path
2524          * because binary format fits to go down through USB channel.
2525          * USB control path is for patching headers and USB bulk is for
2526          * patch body.
2527          */
2528         pipe = usb_sndctrlpipe(udev, 0);
2529         err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
2530                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2531         if (err < 0) {
2532                 BT_ERR("%s: Failed to send headers (%d)", hdev->name, err);
2533                 goto done;
2534         }
2535
2536         sent += size;
2537         count -= size;
2538
2539         while (count) {
2540                 size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
2541
2542                 memcpy(buf, firmware->data + sent, size);
2543
2544                 pipe = usb_sndbulkpipe(udev, 0x02);
2545                 err = usb_bulk_msg(udev, pipe, buf, size, &len,
2546                                    QCA_DFU_TIMEOUT);
2547                 if (err < 0) {
2548                         BT_ERR("%s: Failed to send body at %zd of %zd (%d)",
2549                                hdev->name, sent, firmware->size, err);
2550                         break;
2551                 }
2552
2553                 if (size != len) {
2554                         BT_ERR("%s: Failed to get bulk buffer", hdev->name);
2555                         err = -EILSEQ;
2556                         break;
2557                 }
2558
2559                 sent  += size;
2560                 count -= size;
2561         }
2562
2563 done:
2564         kfree(buf);
2565         return err;
2566 }
2567
2568 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
2569                                          struct qca_version *ver,
2570                                          const struct qca_device_info *info)
2571 {
2572         struct qca_rampatch_version *rver;
2573         const struct firmware *fw;
2574         u32 ver_rom, ver_patch;
2575         u16 rver_rom, rver_patch;
2576         char fwname[64];
2577         int err;
2578
2579         ver_rom = le32_to_cpu(ver->rom_version);
2580         ver_patch = le32_to_cpu(ver->patch_version);
2581
2582         snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom);
2583
2584         err = request_firmware(&fw, fwname, &hdev->dev);
2585         if (err) {
2586                 BT_ERR("%s: failed to request rampatch file: %s (%d)",
2587                        hdev->name, fwname, err);
2588                 return err;
2589         }
2590
2591         BT_INFO("%s: using rampatch file: %s", hdev->name, fwname);
2592
2593         rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
2594         rver_rom = le16_to_cpu(rver->rom_version);
2595         rver_patch = le16_to_cpu(rver->patch_version);
2596
2597         BT_INFO("%s: QCA: patch rome 0x%x build 0x%x, firmware rome 0x%x "
2598                 "build 0x%x", hdev->name, rver_rom, rver_patch, ver_rom,
2599                 ver_patch);
2600
2601         if (rver_rom != ver_rom || rver_patch <= ver_patch) {
2602                 BT_ERR("%s: rampatch file version did not match with firmware",
2603                        hdev->name);
2604                 err = -EINVAL;
2605                 goto done;
2606         }
2607
2608         err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
2609
2610 done:
2611         release_firmware(fw);
2612
2613         return err;
2614 }
2615
2616 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
2617                                     struct qca_version *ver,
2618                                     const struct qca_device_info *info)
2619 {
2620         const struct firmware *fw;
2621         char fwname[64];
2622         int err;
2623
2624         snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x.bin",
2625                  le32_to_cpu(ver->rom_version));
2626
2627         err = request_firmware(&fw, fwname, &hdev->dev);
2628         if (err) {
2629                 BT_ERR("%s: failed to request NVM file: %s (%d)",
2630                        hdev->name, fwname, err);
2631                 return err;
2632         }
2633
2634         BT_INFO("%s: using NVM file: %s", hdev->name, fwname);
2635
2636         err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
2637
2638         release_firmware(fw);
2639
2640         return err;
2641 }
2642
2643 static int btusb_setup_qca(struct hci_dev *hdev)
2644 {
2645         const struct qca_device_info *info = NULL;
2646         struct qca_version ver;
2647         u32 ver_rom;
2648         u8 status;
2649         int i, err;
2650
2651         err = btusb_qca_send_vendor_req(hdev, QCA_GET_TARGET_VERSION, &ver,
2652                                         sizeof(ver));
2653         if (err < 0)
2654                 return err;
2655
2656         ver_rom = le32_to_cpu(ver.rom_version);
2657         for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
2658                 if (ver_rom == qca_devices_table[i].rom_version)
2659                         info = &qca_devices_table[i];
2660         }
2661         if (!info) {
2662                 BT_ERR("%s: don't support firmware rome 0x%x", hdev->name,
2663                        ver_rom);
2664                 return -ENODEV;
2665         }
2666
2667         err = btusb_qca_send_vendor_req(hdev, QCA_CHECK_STATUS, &status,
2668                                         sizeof(status));
2669         if (err < 0)
2670                 return err;
2671
2672         if (!(status & QCA_PATCH_UPDATED)) {
2673                 err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
2674                 if (err < 0)
2675                         return err;
2676         }
2677
2678         if (!(status & QCA_SYSCFG_UPDATED)) {
2679                 err = btusb_setup_qca_load_nvm(hdev, &ver, info);
2680                 if (err < 0)
2681                         return err;
2682         }
2683
2684         return 0;
2685 }
2686
2687 #ifdef CONFIG_BT_HCIBTUSB_BCM
2688 static inline int __set_diag_interface(struct hci_dev *hdev)
2689 {
2690         struct btusb_data *data = hci_get_drvdata(hdev);
2691         struct usb_interface *intf = data->diag;
2692         int i;
2693
2694         if (!data->diag)
2695                 return -ENODEV;
2696
2697         data->diag_tx_ep = NULL;
2698         data->diag_rx_ep = NULL;
2699
2700         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2701                 struct usb_endpoint_descriptor *ep_desc;
2702
2703                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2704
2705                 if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
2706                         data->diag_tx_ep = ep_desc;
2707                         continue;
2708                 }
2709
2710                 if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
2711                         data->diag_rx_ep = ep_desc;
2712                         continue;
2713                 }
2714         }
2715
2716         if (!data->diag_tx_ep || !data->diag_rx_ep) {
2717                 BT_ERR("%s invalid diagnostic descriptors", hdev->name);
2718                 return -ENODEV;
2719         }
2720
2721         return 0;
2722 }
2723
2724 static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable)
2725 {
2726         struct btusb_data *data = hci_get_drvdata(hdev);
2727         struct sk_buff *skb;
2728         struct urb *urb;
2729         unsigned int pipe;
2730
2731         if (!data->diag_tx_ep)
2732                 return ERR_PTR(-ENODEV);
2733
2734         urb = usb_alloc_urb(0, GFP_KERNEL);
2735         if (!urb)
2736                 return ERR_PTR(-ENOMEM);
2737
2738         skb = bt_skb_alloc(2, GFP_KERNEL);
2739         if (!skb) {
2740                 usb_free_urb(urb);
2741                 return ERR_PTR(-ENOMEM);
2742         }
2743
2744         *skb_put(skb, 1) = 0xf0;
2745         *skb_put(skb, 1) = enable;
2746
2747         pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress);
2748
2749         usb_fill_bulk_urb(urb, data->udev, pipe,
2750                           skb->data, skb->len, btusb_tx_complete, skb);
2751
2752         skb->dev = (void *)hdev;
2753
2754         return urb;
2755 }
2756
2757 static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable)
2758 {
2759         struct btusb_data *data = hci_get_drvdata(hdev);
2760         struct urb *urb;
2761
2762         if (!data->diag)
2763                 return -ENODEV;
2764
2765         if (!test_bit(HCI_RUNNING, &hdev->flags))
2766                 return -ENETDOWN;
2767
2768         urb = alloc_diag_urb(hdev, enable);
2769         if (IS_ERR(urb))
2770                 return PTR_ERR(urb);
2771
2772         return submit_or_queue_tx_urb(hdev, urb);
2773 }
2774 #endif
2775
2776 static int btusb_probe(struct usb_interface *intf,
2777                        const struct usb_device_id *id)
2778 {
2779         struct usb_endpoint_descriptor *ep_desc;
2780         struct btusb_data *data;
2781         struct hci_dev *hdev;
2782         unsigned ifnum_base;
2783         int i, err;
2784
2785         BT_DBG("intf %p id %p", intf, id);
2786
2787         /* interface numbers are hardcoded in the spec */
2788         if (intf->cur_altsetting->desc.bInterfaceNumber != 0) {
2789                 if (!(id->driver_info & BTUSB_IFNUM_2))
2790                         return -ENODEV;
2791                 if (intf->cur_altsetting->desc.bInterfaceNumber != 2)
2792                         return -ENODEV;
2793         }
2794
2795         ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber;
2796
2797         if (!id->driver_info) {
2798                 const struct usb_device_id *match;
2799
2800                 match = usb_match_id(intf, blacklist_table);
2801                 if (match)
2802                         id = match;
2803         }
2804
2805         if (id->driver_info == BTUSB_IGNORE)
2806                 return -ENODEV;
2807
2808         if (id->driver_info & BTUSB_ATH3012) {
2809                 struct usb_device *udev = interface_to_usbdev(intf);
2810
2811                 /* Old firmware would otherwise let ath3k driver load
2812                  * patch and sysconfig files */
2813                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
2814                         return -ENODEV;
2815         }
2816
2817         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
2818         if (!data)
2819                 return -ENOMEM;
2820
2821         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2822                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2823
2824                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
2825                         data->intr_ep = ep_desc;
2826                         continue;
2827                 }
2828
2829                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
2830                         data->bulk_tx_ep = ep_desc;
2831                         continue;
2832                 }
2833
2834                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
2835                         data->bulk_rx_ep = ep_desc;
2836                         continue;
2837                 }
2838         }
2839
2840         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
2841                 return -ENODEV;
2842
2843         if (id->driver_info & BTUSB_AMP) {
2844                 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
2845                 data->cmdreq = 0x2b;
2846         } else {
2847                 data->cmdreq_type = USB_TYPE_CLASS;
2848                 data->cmdreq = 0x00;
2849         }
2850
2851         data->udev = interface_to_usbdev(intf);
2852         data->intf = intf;
2853
2854         INIT_WORK(&data->work, btusb_work);
2855         INIT_WORK(&data->waker, btusb_waker);
2856         init_usb_anchor(&data->deferred);
2857         init_usb_anchor(&data->tx_anchor);
2858         spin_lock_init(&data->txlock);
2859
2860         init_usb_anchor(&data->intr_anchor);
2861         init_usb_anchor(&data->bulk_anchor);
2862         init_usb_anchor(&data->isoc_anchor);
2863         init_usb_anchor(&data->diag_anchor);
2864         spin_lock_init(&data->rxlock);
2865
2866         if (id->driver_info & BTUSB_INTEL_NEW) {
2867                 data->recv_event = btusb_recv_event_intel;
2868                 data->recv_bulk = btusb_recv_bulk_intel;
2869                 set_bit(BTUSB_BOOTLOADER, &data->flags);
2870         } else {
2871                 data->recv_event = hci_recv_frame;
2872                 data->recv_bulk = btusb_recv_bulk;
2873         }
2874
2875         hdev = hci_alloc_dev();
2876         if (!hdev)
2877                 return -ENOMEM;
2878
2879         hdev->bus = HCI_USB;
2880         hci_set_drvdata(hdev, data);
2881
2882         if (id->driver_info & BTUSB_AMP)
2883                 hdev->dev_type = HCI_AMP;
2884         else
2885                 hdev->dev_type = HCI_BREDR;
2886
2887         data->hdev = hdev;
2888
2889         SET_HCIDEV_DEV(hdev, &intf->dev);
2890
2891         hdev->open   = btusb_open;
2892         hdev->close  = btusb_close;
2893         hdev->flush  = btusb_flush;
2894         hdev->send   = btusb_send_frame;
2895         hdev->notify = btusb_notify;
2896
2897         if (id->driver_info & BTUSB_BCM2045)
2898                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
2899
2900         if (id->driver_info & BTUSB_BCM92035)
2901                 hdev->setup = btusb_setup_bcm92035;
2902
2903 #ifdef CONFIG_BT_HCIBTUSB_BCM
2904         if (id->driver_info & BTUSB_BCM_PATCHRAM) {
2905                 hdev->manufacturer = 15;
2906                 hdev->setup = btbcm_setup_patchram;
2907                 hdev->set_diag = btusb_bcm_set_diag;
2908                 hdev->set_bdaddr = btbcm_set_bdaddr;
2909
2910                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
2911                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
2912         }
2913
2914         if (id->driver_info & BTUSB_BCM_APPLE) {
2915                 hdev->manufacturer = 15;
2916                 hdev->setup = btbcm_setup_apple;
2917                 hdev->set_diag = btusb_bcm_set_diag;
2918
2919                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
2920                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
2921         }
2922 #endif
2923
2924         if (id->driver_info & BTUSB_INTEL) {
2925                 hdev->manufacturer = 2;
2926                 hdev->setup = btusb_setup_intel;
2927                 hdev->shutdown = btusb_shutdown_intel;
2928                 hdev->set_diag = btintel_set_diag_mfg;
2929                 hdev->set_bdaddr = btintel_set_bdaddr;
2930                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2931                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
2932                 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
2933         }
2934
2935         if (id->driver_info & BTUSB_INTEL_NEW) {
2936                 hdev->manufacturer = 2;
2937                 hdev->send = btusb_send_frame_intel;
2938                 hdev->setup = btusb_setup_intel_new;
2939                 hdev->hw_error = btintel_hw_error;
2940                 hdev->set_diag = btintel_set_diag;
2941                 hdev->set_bdaddr = btintel_set_bdaddr;
2942                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2943                 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
2944         }
2945
2946         if (id->driver_info & BTUSB_MARVELL)
2947                 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
2948
2949         if (id->driver_info & BTUSB_SWAVE) {
2950                 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
2951                 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
2952         }
2953
2954         if (id->driver_info & BTUSB_INTEL_BOOT) {
2955                 hdev->manufacturer = 2;
2956                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
2957         }
2958
2959         if (id->driver_info & BTUSB_ATH3012) {
2960                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
2961                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
2962                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2963         }
2964
2965         if (id->driver_info & BTUSB_QCA_ROME) {
2966                 data->setup_on_usb = btusb_setup_qca;
2967                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
2968         }
2969
2970 #ifdef CONFIG_BT_HCIBTUSB_RTL
2971         if (id->driver_info & BTUSB_REALTEK) {
2972                 hdev->setup = btrtl_setup_realtek;
2973
2974                 /* Realtek devices lose their updated firmware over suspend,
2975                  * but the USB hub doesn't notice any status change.
2976                  * Explicitly request a device reset on resume.
2977                  */
2978                 set_bit(BTUSB_RESET_RESUME, &data->flags);
2979         }
2980 #endif
2981
2982         if (id->driver_info & BTUSB_AMP) {
2983                 /* AMP controllers do not support SCO packets */
2984                 data->isoc = NULL;
2985         } else {
2986                 /* Interface orders are hardcoded in the specification */
2987                 data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1);
2988         }
2989
2990         if (!reset)
2991                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2992
2993         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
2994                 if (!disable_scofix)
2995                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
2996         }
2997
2998         if (id->driver_info & BTUSB_BROKEN_ISOC)
2999                 data->isoc = NULL;
3000
3001         if (id->driver_info & BTUSB_DIGIANSWER) {
3002                 data->cmdreq_type = USB_TYPE_VENDOR;
3003                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3004         }
3005
3006         if (id->driver_info & BTUSB_CSR) {
3007                 struct usb_device *udev = data->udev;
3008                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
3009
3010                 /* Old firmware would otherwise execute USB reset */
3011                 if (bcdDevice < 0x117)
3012                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3013
3014                 /* Fake CSR devices with broken commands */
3015                 if (bcdDevice <= 0x100 || bcdDevice == 0x134)
3016                         hdev->setup = btusb_setup_csr;
3017
3018                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3019         }
3020
3021         if (id->driver_info & BTUSB_SNIFFER) {
3022                 struct usb_device *udev = data->udev;
3023
3024                 /* New sniffer firmware has crippled HCI interface */
3025                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
3026                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3027         }
3028
3029         if (id->driver_info & BTUSB_INTEL_BOOT) {
3030                 /* A bug in the bootloader causes that interrupt interface is
3031                  * only enabled after receiving SetInterface(0, AltSetting=0).
3032                  */
3033                 err = usb_set_interface(data->udev, 0, 0);
3034                 if (err < 0) {
3035                         BT_ERR("failed to set interface 0, alt 0 %d", err);
3036                         hci_free_dev(hdev);
3037                         return err;
3038                 }
3039         }
3040
3041         if (data->isoc) {
3042                 err = usb_driver_claim_interface(&btusb_driver,
3043                                                  data->isoc, data);
3044                 if (err < 0) {
3045                         hci_free_dev(hdev);
3046                         return err;
3047                 }
3048         }
3049
3050 #ifdef CONFIG_BT_HCIBTUSB_BCM
3051         if (data->diag) {
3052                 if (!usb_driver_claim_interface(&btusb_driver,
3053                                                 data->diag, data))
3054                         __set_diag_interface(hdev);
3055                 else
3056                         data->diag = NULL;
3057         }
3058 #endif
3059
3060         err = hci_register_dev(hdev);
3061         if (err < 0) {
3062                 hci_free_dev(hdev);
3063                 return err;
3064         }
3065
3066         usb_set_intfdata(intf, data);
3067
3068         return 0;
3069 }
3070
3071 static void btusb_disconnect(struct usb_interface *intf)
3072 {
3073         struct btusb_data *data = usb_get_intfdata(intf);
3074         struct hci_dev *hdev;
3075
3076         BT_DBG("intf %p", intf);
3077
3078         if (!data)
3079                 return;
3080
3081         hdev = data->hdev;
3082         usb_set_intfdata(data->intf, NULL);
3083
3084         if (data->isoc)
3085                 usb_set_intfdata(data->isoc, NULL);
3086
3087         if (data->diag)
3088                 usb_set_intfdata(data->diag, NULL);
3089
3090         hci_unregister_dev(hdev);
3091
3092         if (intf == data->intf) {
3093                 if (data->isoc)
3094                         usb_driver_release_interface(&btusb_driver, data->isoc);
3095                 if (data->diag)
3096                         usb_driver_release_interface(&btusb_driver, data->diag);
3097         } else if (intf == data->isoc) {
3098                 if (data->diag)
3099                         usb_driver_release_interface(&btusb_driver, data->diag);
3100                 usb_driver_release_interface(&btusb_driver, data->intf);
3101         } else if (intf == data->diag) {
3102                 usb_driver_release_interface(&btusb_driver, data->intf);
3103                 if (data->isoc)
3104                         usb_driver_release_interface(&btusb_driver, data->isoc);
3105         }
3106
3107         hci_free_dev(hdev);
3108 }
3109
3110 #ifdef CONFIG_PM
3111 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
3112 {
3113         struct btusb_data *data = usb_get_intfdata(intf);
3114
3115         BT_DBG("intf %p", intf);
3116
3117         if (data->suspend_count++)
3118                 return 0;
3119
3120         spin_lock_irq(&data->txlock);
3121         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
3122                 set_bit(BTUSB_SUSPENDING, &data->flags);
3123                 spin_unlock_irq(&data->txlock);
3124         } else {
3125                 spin_unlock_irq(&data->txlock);
3126                 data->suspend_count--;
3127                 return -EBUSY;
3128         }
3129
3130         cancel_work_sync(&data->work);
3131
3132         btusb_stop_traffic(data);
3133         usb_kill_anchored_urbs(&data->tx_anchor);
3134
3135         /* Optionally request a device reset on resume, but only when
3136          * wakeups are disabled. If wakeups are enabled we assume the
3137          * device will stay powered up throughout suspend.
3138          */
3139         if (test_bit(BTUSB_RESET_RESUME, &data->flags) &&
3140             !device_may_wakeup(&data->udev->dev))
3141                 data->udev->reset_resume = 1;
3142
3143         return 0;
3144 }
3145
3146 static void play_deferred(struct btusb_data *data)
3147 {
3148         struct urb *urb;
3149         int err;
3150
3151         while ((urb = usb_get_from_anchor(&data->deferred))) {
3152                 err = usb_submit_urb(urb, GFP_ATOMIC);
3153                 if (err < 0)
3154                         break;
3155
3156                 data->tx_in_flight++;
3157         }
3158         usb_scuttle_anchored_urbs(&data->deferred);
3159 }
3160
3161 static int btusb_resume(struct usb_interface *intf)
3162 {
3163         struct btusb_data *data = usb_get_intfdata(intf);
3164         struct hci_dev *hdev = data->hdev;
3165         int err = 0;
3166
3167         BT_DBG("intf %p", intf);
3168
3169         if (--data->suspend_count)
3170                 return 0;
3171
3172         if (!test_bit(HCI_RUNNING, &hdev->flags))
3173                 goto done;
3174
3175         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
3176                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
3177                 if (err < 0) {
3178                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
3179                         goto failed;
3180                 }
3181         }
3182
3183         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
3184                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
3185                 if (err < 0) {
3186                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
3187                         goto failed;
3188                 }
3189
3190                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
3191         }
3192
3193         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
3194                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
3195                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
3196                 else
3197                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
3198         }
3199
3200         spin_lock_irq(&data->txlock);
3201         play_deferred(data);
3202         clear_bit(BTUSB_SUSPENDING, &data->flags);
3203         spin_unlock_irq(&data->txlock);
3204         schedule_work(&data->work);
3205
3206         return 0;
3207
3208 failed:
3209         usb_scuttle_anchored_urbs(&data->deferred);
3210 done:
3211         spin_lock_irq(&data->txlock);
3212         clear_bit(BTUSB_SUSPENDING, &data->flags);
3213         spin_unlock_irq(&data->txlock);
3214
3215         return err;
3216 }
3217 #endif
3218
3219 static struct usb_driver btusb_driver = {
3220         .name           = "btusb",
3221         .probe          = btusb_probe,
3222         .disconnect     = btusb_disconnect,
3223 #ifdef CONFIG_PM
3224         .suspend        = btusb_suspend,
3225         .resume         = btusb_resume,
3226 #endif
3227         .id_table       = btusb_table,
3228         .supports_autosuspend = 1,
3229         .disable_hub_initiated_lpm = 1,
3230 };
3231
3232 module_usb_driver(btusb_driver);
3233
3234 module_param(disable_scofix, bool, 0644);
3235 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
3236
3237 module_param(force_scofix, bool, 0644);
3238 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
3239
3240 module_param(reset, bool, 0644);
3241 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
3242
3243 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
3244 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
3245 MODULE_VERSION(VERSION);
3246 MODULE_LICENSE("GPL");