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