kernel/drivers/bluetooth/btusb.c

   1 /*
   2  *
   3  *  Generic Bluetooth USB driver
   4  *
   5  *  Copyright (C) 2005-2008  Marcel Holtmann <marcel@holtmann.org>
   6  *
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, write to the Free Software
  20  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  *
  22  */
  23
  24 #include <linux/module.h>
  25 #include <linux/usb.h>
  26 #include <linux/firmware.h>
  27 #include <asm/unaligned.h>
  28
  29 #include <net/bluetooth/bluetooth.h>
  30 #include <net/bluetooth/hci_core.h>
  31
  32 #include "btintel.h"
  33 #include "btbcm.h"
  34
  35 #define VERSION "0.8"
  36
  37 static bool disable_scofix;
  38 static bool force_scofix;
  39
  40 static bool reset = 1;
  41
  42 static struct usb_driver btusb_driver;
  43
  44 #define BTUSB_IGNORE            0x01
  45 #define BTUSB_DIGIANSWER        0x02
  46 #define BTUSB_CSR               0x04
  47 #define BTUSB_SNIFFER           0x08
  48 #define BTUSB_BCM92035          0x10
  49 #define BTUSB_BROKEN_ISOC       0x20
  50 #define BTUSB_WRONG_SCO_MTU     0x40
  51 #define BTUSB_ATH3012           0x80
  52 #define BTUSB_INTEL             0x100
  53 #define BTUSB_INTEL_BOOT        0x200
  54 #define BTUSB_BCM_PATCHRAM      0x400
  55 #define BTUSB_MARVELL           0x800
  56 #define BTUSB_SWAVE             0x1000
  57 #define BTUSB_INTEL_NEW         0x2000
  58 #define BTUSB_AMP               0x4000
  59 #define BTUSB_QCA_ROME          0x8000
  60 #define BTUSB_BCM_APPLE         0x10000
  61 #define BTUSB_REALTEK           0x20000
  62
  63 static const struct usb_device_id btusb_table[] = {
  64         /* Generic Bluetooth USB device */
  65         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  66
  67         /* Generic Bluetooth AMP device */
  68         { USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP },
  69
  70         /* Apple-specific (Broadcom) devices */
  71         { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01),
  72           .driver_info = BTUSB_BCM_APPLE },
  73
  74         /* MediaTek MT76x0E */
  75         { USB_DEVICE(0x0e8d, 0x763f) },
  76
  77         /* Broadcom SoftSailing reporting vendor specific */
  78         { USB_DEVICE(0x0a5c, 0x21e1) },
  79
  80         /* Apple MacBookPro 7,1 */
  81         { USB_DEVICE(0x05ac, 0x8213) },
  82
  83         /* Apple iMac11,1 */
  84         { USB_DEVICE(0x05ac, 0x8215) },
  85
  86         /* Apple MacBookPro6,2 */
  87         { USB_DEVICE(0x05ac, 0x8218) },
  88
  89         /* Apple MacBookAir3,1, MacBookAir3,2 */
  90         { USB_DEVICE(0x05ac, 0x821b) },
  91
  92         /* Apple MacBookAir4,1 */
  93         { USB_DEVICE(0x05ac, 0x821f) },
  94
  95         /* Apple MacBookPro8,2 */
  96         { USB_DEVICE(0x05ac, 0x821a) },
  97
  98         /* Apple MacMini5,1 */
  99         { USB_DEVICE(0x05ac, 0x8281) },
 100
 101         /* AVM BlueFRITZ! USB v2.0 */
 102         { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE },
 103
 104         /* Bluetooth Ultraport Module from IBM */
 105         { USB_DEVICE(0x04bf, 0x030a) },
 106
 107         /* ALPS Modules with non-standard id */
 108         { USB_DEVICE(0x044e, 0x3001) },
 109         { USB_DEVICE(0x044e, 0x3002) },
 110
 111         /* Ericsson with non-standard id */
 112         { USB_DEVICE(0x0bdb, 0x1002) },
 113
 114         /* Canyon CN-BTU1 with HID interfaces */
 115         { USB_DEVICE(0x0c10, 0x0000) },
 116
 117         /* Broadcom BCM20702A0 */
 118         { USB_DEVICE(0x413c, 0x8197) },
 119
 120         /* Broadcom BCM20702B0 (Dynex/Insignia) */
 121         { USB_DEVICE(0x19ff, 0x0239), .driver_info = BTUSB_BCM_PATCHRAM },
 122
 123         /* Foxconn - Hon Hai */
 124         { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01),
 125           .driver_info = BTUSB_BCM_PATCHRAM },
 126
 127         /* Lite-On Technology - Broadcom based */
 128         { USB_VENDOR_AND_INTERFACE_INFO(0x04ca, 0xff, 0x01, 0x01),
 129           .driver_info = BTUSB_BCM_PATCHRAM },
 130
 131         /* Broadcom devices with vendor specific id */
 132         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
 133           .driver_info = BTUSB_BCM_PATCHRAM },
 134
 135         /* ASUSTek Computer - Broadcom based */
 136         { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01),
 137           .driver_info = BTUSB_BCM_PATCHRAM },
 138
 139         /* Belkin F8065bf - Broadcom based */
 140         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01),
 141           .driver_info = BTUSB_BCM_PATCHRAM },
 142
 143         /* IMC Networks - Broadcom based */
 144         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01),
 145           .driver_info = BTUSB_BCM_PATCHRAM },
 146
 147         /* Intel Bluetooth USB Bootloader (RAM module) */
 148         { USB_DEVICE(0x8087, 0x0a5a),
 149           .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
 150
 151         { }     /* Terminating entry */
 152 };
 153
 154 MODULE_DEVICE_TABLE(usb, btusb_table);
 155
 156 static const struct usb_device_id blacklist_table[] = {
 157         /* CSR BlueCore devices */
 158         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 159
 160         /* Broadcom BCM2033 without firmware */
 161         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 162
 163         /* Atheros 3011 with sflash firmware */
 164         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 165         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 166         { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE },
 167         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 168         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 169         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 170         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 171
 172         /* Atheros AR9285 Malbec with sflash firmware */
 173         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 174
 175         /* Atheros 3012 with sflash firmware */
 176         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 177         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 178         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 179         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 180         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 181         { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
 182         { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
 183         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 184         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 185         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 186         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 187         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 188         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 189         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 190         { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
 191         { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
 192         { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
 193         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 194         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 195         { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
 196         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 197         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 198         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 199         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 200         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 201         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
 202         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 203         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 204         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 205         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 206         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 207         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 208         { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 },
 209         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 210         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 211         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 212         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 213         { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
 214         { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
 215         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
 216         { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
 217
 218         /* Atheros AR5BBU12 with sflash firmware */
 219         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 220
 221         /* Atheros AR5BBU12 with sflash firmware */
 222         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 223         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 224
 225         /* QCA ROME chipset */
 226         { USB_DEVICE(0x0cf3, 0xe007), .driver_info = BTUSB_QCA_ROME },
 227         { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME },
 228         { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME },
 229
 230         /* Broadcom BCM2035 */
 231         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 232         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 233         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 234
 235         /* Broadcom BCM2045 */
 236         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 237         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 238
 239         /* IBM/Lenovo ThinkPad with Broadcom chip */
 240         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 241         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 242
 243         /* HP laptop with Broadcom chip */
 244         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 245
 246         /* Dell laptop with Broadcom chip */
 247         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 248
 249         /* Dell Wireless 370 and 410 devices */
 250         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 251         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 252
 253         /* Belkin F8T012 and F8T013 devices */
 254         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 255         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 256
 257         /* Asus WL-BTD202 device */
 258         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 259
 260         /* Kensington Bluetooth USB adapter */
 261         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 262
 263         /* RTX Telecom based adapters with buggy SCO support */
 264         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 265         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 266
 267         /* CONWISE Technology based adapters with buggy SCO support */
 268         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 269
 270         /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
 271         { USB_DEVICE(0x1300, 0x0001), .driver_info = BTUSB_SWAVE },
 272
 273         /* Digianswer devices */
 274         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 275         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 276
 277         /* CSR BlueCore Bluetooth Sniffer */
 278         { USB_DEVICE(0x0a12, 0x0002),
 279           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 280
 281         /* Frontline ComProbe Bluetooth Sniffer */
 282         { USB_DEVICE(0x16d3, 0x0002),
 283           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 284
 285         /* Marvell Bluetooth devices */
 286         { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
 287         { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
 288
 289         /* Intel Bluetooth devices */
 290         { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR },
 291         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 292         { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
 293         { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_NEW },
 294
 295         /* Other Intel Bluetooth devices */
 296         { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01),
 297           .driver_info = BTUSB_IGNORE },
 298
 299         /* Realtek Bluetooth devices */
 300         { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01),
 301           .driver_info = BTUSB_REALTEK },
 302
 303         /* Additional Realtek 8723AE Bluetooth devices */
 304         { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK },
 305         { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK },
 306
 307         /* Additional Realtek 8723BE Bluetooth devices */
 308         { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK },
 309         { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK },
 310         { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
 311         { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
 312         { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },
 313
 314         /* Additional Realtek 8821AE Bluetooth devices */
 315         { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
 316         { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },
 317         { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK },
 318         { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK },
 319         { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK },
 320
 321         { }     /* Terminating entry */
 322 };
 323
 324 #define BTUSB_MAX_ISOC_FRAMES   10
 325
 326 #define BTUSB_INTR_RUNNING      0
 327 #define BTUSB_BULK_RUNNING      1
 328 #define BTUSB_ISOC_RUNNING      2
 329 #define BTUSB_SUSPENDING        3
 330 #define BTUSB_DID_ISO_RESUME    4
 331 #define BTUSB_BOOTLOADER        5
 332 #define BTUSB_DOWNLOADING       6
 333 #define BTUSB_FIRMWARE_LOADED   7
 334 #define BTUSB_FIRMWARE_FAILED   8
 335 #define BTUSB_BOOTING           9
 336
 337 struct btusb_data {
 338         struct hci_dev       *hdev;
 339         struct usb_device    *udev;
 340         struct usb_interface *intf;
 341         struct usb_interface *isoc;
 342
 343         unsigned long flags;
 344
 345         struct work_struct work;
 346         struct work_struct waker;
 347
 348         struct usb_anchor deferred;
 349         struct usb_anchor tx_anchor;
 350         int tx_in_flight;
 351         spinlock_t txlock;
 352
 353         struct usb_anchor intr_anchor;
 354         struct usb_anchor bulk_anchor;
 355         struct usb_anchor isoc_anchor;
 356         spinlock_t rxlock;
 357
 358         struct sk_buff *evt_skb;
 359         struct sk_buff *acl_skb;
 360         struct sk_buff *sco_skb;
 361
 362         struct usb_endpoint_descriptor *intr_ep;
 363         struct usb_endpoint_descriptor *bulk_tx_ep;
 364         struct usb_endpoint_descriptor *bulk_rx_ep;
 365         struct usb_endpoint_descriptor *isoc_tx_ep;
 366         struct usb_endpoint_descriptor *isoc_rx_ep;
 367
 368         __u8 cmdreq_type;
 369         __u8 cmdreq;
 370
 371         unsigned int sco_num;
 372         int isoc_altsetting;
 373         int suspend_count;
 374
 375         int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
 376         int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
 377
 378         int (*setup_on_usb)(struct hci_dev *hdev);
 379 };
 380
 381 static inline void btusb_free_frags(struct btusb_data *data)
 382 {
 383         unsigned long flags;
 384
 385         spin_lock_irqsave(&data->rxlock, flags);
 386
 387         kfree_skb(data->evt_skb);
 388         data->evt_skb = NULL;
 389
 390         kfree_skb(data->acl_skb);
 391         data->acl_skb = NULL;
 392
 393         kfree_skb(data->sco_skb);
 394         data->sco_skb = NULL;
 395
 396         spin_unlock_irqrestore(&data->rxlock, flags);
 397 }
 398
 399 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
 400 {
 401         struct sk_buff *skb;
 402         int err = 0;
 403
 404         spin_lock(&data->rxlock);
 405         skb = data->evt_skb;
 406
 407         while (count) {
 408                 int len;
 409
 410                 if (!skb) {
 411                         skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
 412                         if (!skb) {
 413                                 err = -ENOMEM;
 414                                 break;
 415                         }
 416
 417                         bt_cb(skb)->pkt_type = HCI_EVENT_PKT;
 418                         bt_cb(skb)->expect = HCI_EVENT_HDR_SIZE;
 419                 }
 420
 421                 len = min_t(uint, bt_cb(skb)->expect, count);
 422                 memcpy(skb_put(skb, len), buffer, len);
 423
 424                 count -= len;
 425                 buffer += len;
 426                 bt_cb(skb)->expect -= len;
 427
 428                 if (skb->len == HCI_EVENT_HDR_SIZE) {
 429                         /* Complete event header */
 430                         bt_cb(skb)->expect = hci_event_hdr(skb)->plen;
 431
 432                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 433                                 kfree_skb(skb);
 434                                 skb = NULL;
 435
 436                                 err = -EILSEQ;
 437                                 break;
 438                         }
 439                 }
 440
 441                 if (bt_cb(skb)->expect == 0) {
 442                         /* Complete frame */
 443                         data->recv_event(data->hdev, skb);
 444                         skb = NULL;
 445                 }
 446         }
 447
 448         data->evt_skb = skb;
 449         spin_unlock(&data->rxlock);
 450
 451         return err;
 452 }
 453
 454 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
 455 {
 456         struct sk_buff *skb;
 457         int err = 0;
 458
 459         spin_lock(&data->rxlock);
 460         skb = data->acl_skb;
 461
 462         while (count) {
 463                 int len;
 464
 465                 if (!skb) {
 466                         skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
 467                         if (!skb) {
 468                                 err = -ENOMEM;
 469                                 break;
 470                         }
 471
 472                         bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT;
 473                         bt_cb(skb)->expect = HCI_ACL_HDR_SIZE;
 474                 }
 475
 476                 len = min_t(uint, bt_cb(skb)->expect, count);
 477                 memcpy(skb_put(skb, len), buffer, len);
 478
 479                 count -= len;
 480                 buffer += len;
 481                 bt_cb(skb)->expect -= len;
 482
 483                 if (skb->len == HCI_ACL_HDR_SIZE) {
 484                         __le16 dlen = hci_acl_hdr(skb)->dlen;
 485
 486                         /* Complete ACL header */
 487                         bt_cb(skb)->expect = __le16_to_cpu(dlen);
 488
 489                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 490                                 kfree_skb(skb);
 491                                 skb = NULL;
 492
 493                                 err = -EILSEQ;
 494                                 break;
 495                         }
 496                 }
 497
 498                 if (bt_cb(skb)->expect == 0) {
 499                         /* Complete frame */
 500                         hci_recv_frame(data->hdev, skb);
 501                         skb = NULL;
 502                 }
 503         }
 504
 505         data->acl_skb = skb;
 506         spin_unlock(&data->rxlock);
 507
 508         return err;
 509 }
 510
 511 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
 512 {
 513         struct sk_buff *skb;
 514         int err = 0;
 515
 516         spin_lock(&data->rxlock);
 517         skb = data->sco_skb;
 518
 519         while (count) {
 520                 int len;
 521
 522                 if (!skb) {
 523                         skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
 524                         if (!skb) {
 525                                 err = -ENOMEM;
 526                                 break;
 527                         }
 528
 529                         bt_cb(skb)->pkt_type = HCI_SCODATA_PKT;
 530                         bt_cb(skb)->expect = HCI_SCO_HDR_SIZE;
 531                 }
 532
 533                 len = min_t(uint, bt_cb(skb)->expect, count);
 534                 memcpy(skb_put(skb, len), buffer, len);
 535
 536                 count -= len;
 537                 buffer += len;
 538                 bt_cb(skb)->expect -= len;
 539
 540                 if (skb->len == HCI_SCO_HDR_SIZE) {
 541                         /* Complete SCO header */
 542                         bt_cb(skb)->expect = hci_sco_hdr(skb)->dlen;
 543
 544                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 545                                 kfree_skb(skb);
 546                                 skb = NULL;
 547
 548                                 err = -EILSEQ;
 549                                 break;
 550                         }
 551                 }
 552
 553                 if (bt_cb(skb)->expect == 0) {
 554                         /* Complete frame */
 555                         hci_recv_frame(data->hdev, skb);
 556                         skb = NULL;
 557                 }
 558         }
 559
 560         data->sco_skb = skb;
 561         spin_unlock(&data->rxlock);
 562
 563         return err;
 564 }
 565
 566 static void btusb_intr_complete(struct urb *urb)
 567 {
 568         struct hci_dev *hdev = urb->context;
 569         struct btusb_data *data = hci_get_drvdata(hdev);
 570         int err;
 571
 572         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 573                urb->actual_length);
 574
 575         if (!test_bit(HCI_RUNNING, &hdev->flags))
 576                 return;
 577
 578         if (urb->status == 0) {
 579                 hdev->stat.byte_rx += urb->actual_length;
 580
 581                 if (btusb_recv_intr(data, urb->transfer_buffer,
 582                                     urb->actual_length) < 0) {
 583                         BT_ERR("%s corrupted event packet", hdev->name);
 584                         hdev->stat.err_rx++;
 585                 }
 586         } else if (urb->status == -ENOENT) {
 587                 /* Avoid suspend failed when usb_kill_urb */
 588                 return;
 589         }
 590
 591         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 592                 return;
 593
 594         usb_mark_last_busy(data->udev);
 595         usb_anchor_urb(urb, &data->intr_anchor);
 596
 597         err = usb_submit_urb(urb, GFP_ATOMIC);
 598         if (err < 0) {
 599                 /* -EPERM: urb is being killed;
 600                  * -ENODEV: device got disconnected */
 601                 if (err != -EPERM && err != -ENODEV)
 602                         BT_ERR("%s urb %p failed to resubmit (%d)",
 603                                hdev->name, urb, -err);
 604                 usb_unanchor_urb(urb);
 605         }
 606 }
 607
 608 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 609 {
 610         struct btusb_data *data = hci_get_drvdata(hdev);
 611         struct urb *urb;
 612         unsigned char *buf;
 613         unsigned int pipe;
 614         int err, size;
 615
 616         BT_DBG("%s", hdev->name);
 617
 618         if (!data->intr_ep)
 619                 return -ENODEV;
 620
 621         urb = usb_alloc_urb(0, mem_flags);
 622         if (!urb)
 623                 return -ENOMEM;
 624
 625         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 626
 627         buf = kmalloc(size, mem_flags);
 628         if (!buf) {
 629                 usb_free_urb(urb);
 630                 return -ENOMEM;
 631         }
 632
 633         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 634
 635         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 636                          btusb_intr_complete, hdev, data->intr_ep->bInterval);
 637
 638         urb->transfer_flags |= URB_FREE_BUFFER;
 639
 640         usb_anchor_urb(urb, &data->intr_anchor);
 641
 642         err = usb_submit_urb(urb, mem_flags);
 643         if (err < 0) {
 644                 if (err != -EPERM && err != -ENODEV)
 645                         BT_ERR("%s urb %p submission failed (%d)",
 646                                hdev->name, urb, -err);
 647                 usb_unanchor_urb(urb);
 648         }
 649
 650         usb_free_urb(urb);
 651
 652         return err;
 653 }
 654
 655 static void btusb_bulk_complete(struct urb *urb)
 656 {
 657         struct hci_dev *hdev = urb->context;
 658         struct btusb_data *data = hci_get_drvdata(hdev);
 659         int err;
 660
 661         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 662                urb->actual_length);
 663
 664         if (!test_bit(HCI_RUNNING, &hdev->flags))
 665                 return;
 666
 667         if (urb->status == 0) {
 668                 hdev->stat.byte_rx += urb->actual_length;
 669
 670                 if (data->recv_bulk(data, urb->transfer_buffer,
 671                                     urb->actual_length) < 0) {
 672                         BT_ERR("%s corrupted ACL packet", hdev->name);
 673                         hdev->stat.err_rx++;
 674                 }
 675         } else if (urb->status == -ENOENT) {
 676                 /* Avoid suspend failed when usb_kill_urb */
 677                 return;
 678         }
 679
 680         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 681                 return;
 682
 683         usb_anchor_urb(urb, &data->bulk_anchor);
 684         usb_mark_last_busy(data->udev);
 685
 686         err = usb_submit_urb(urb, GFP_ATOMIC);
 687         if (err < 0) {
 688                 /* -EPERM: urb is being killed;
 689                  * -ENODEV: device got disconnected */
 690                 if (err != -EPERM && err != -ENODEV)
 691                         BT_ERR("%s urb %p failed to resubmit (%d)",
 692                                hdev->name, urb, -err);
 693                 usb_unanchor_urb(urb);
 694         }
 695 }
 696
 697 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 698 {
 699         struct btusb_data *data = hci_get_drvdata(hdev);
 700         struct urb *urb;
 701         unsigned char *buf;
 702         unsigned int pipe;
 703         int err, size = HCI_MAX_FRAME_SIZE;
 704
 705         BT_DBG("%s", hdev->name);
 706
 707         if (!data->bulk_rx_ep)
 708                 return -ENODEV;
 709
 710         urb = usb_alloc_urb(0, mem_flags);
 711         if (!urb)
 712                 return -ENOMEM;
 713
 714         buf = kmalloc(size, mem_flags);
 715         if (!buf) {
 716                 usb_free_urb(urb);
 717                 return -ENOMEM;
 718         }
 719
 720         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 721
 722         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
 723                           btusb_bulk_complete, hdev);
 724
 725         urb->transfer_flags |= URB_FREE_BUFFER;
 726
 727         usb_mark_last_busy(data->udev);
 728         usb_anchor_urb(urb, &data->bulk_anchor);
 729
 730         err = usb_submit_urb(urb, mem_flags);
 731         if (err < 0) {
 732                 if (err != -EPERM && err != -ENODEV)
 733                         BT_ERR("%s urb %p submission failed (%d)",
 734                                hdev->name, urb, -err);
 735                 usb_unanchor_urb(urb);
 736         }
 737
 738         usb_free_urb(urb);
 739
 740         return err;
 741 }
 742
 743 static void btusb_isoc_complete(struct urb *urb)
 744 {
 745         struct hci_dev *hdev = urb->context;
 746         struct btusb_data *data = hci_get_drvdata(hdev);
 747         int i, err;
 748
 749         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 750                urb->actual_length);
 751
 752         if (!test_bit(HCI_RUNNING, &hdev->flags))
 753                 return;
 754
 755         if (urb->status == 0) {
 756                 for (i = 0; i < urb->number_of_packets; i++) {
 757                         unsigned int offset = urb->iso_frame_desc[i].offset;
 758                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 759
 760                         if (urb->iso_frame_desc[i].status)
 761                                 continue;
 762
 763                         hdev->stat.byte_rx += length;
 764
 765                         if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
 766                                             length) < 0) {
 767                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 768                                 hdev->stat.err_rx++;
 769                         }
 770                 }
 771         } else if (urb->status == -ENOENT) {
 772                 /* Avoid suspend failed when usb_kill_urb */
 773                 return;
 774         }
 775
 776         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 777                 return;
 778
 779         usb_anchor_urb(urb, &data->isoc_anchor);
 780
 781         err = usb_submit_urb(urb, GFP_ATOMIC);
 782         if (err < 0) {
 783                 /* -EPERM: urb is being killed;
 784                  * -ENODEV: device got disconnected */
 785                 if (err != -EPERM && err != -ENODEV)
 786                         BT_ERR("%s urb %p failed to resubmit (%d)",
 787                                hdev->name, urb, -err);
 788                 usb_unanchor_urb(urb);
 789         }
 790 }
 791
 792 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 793 {
 794         int i, offset = 0;
 795
 796         BT_DBG("len %d mtu %d", len, mtu);
 797
 798         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 799                                         i++, offset += mtu, len -= mtu) {
 800                 urb->iso_frame_desc[i].offset = offset;
 801                 urb->iso_frame_desc[i].length = mtu;
 802         }
 803
 804         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 805                 urb->iso_frame_desc[i].offset = offset;
 806                 urb->iso_frame_desc[i].length = len;
 807                 i++;
 808         }
 809
 810         urb->number_of_packets = i;
 811 }
 812
 813 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 814 {
 815         struct btusb_data *data = hci_get_drvdata(hdev);
 816         struct urb *urb;
 817         unsigned char *buf;
 818         unsigned int pipe;
 819         int err, size;
 820
 821         BT_DBG("%s", hdev->name);
 822
 823         if (!data->isoc_rx_ep)
 824                 return -ENODEV;
 825
 826         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 827         if (!urb)
 828                 return -ENOMEM;
 829
 830         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 831                                                 BTUSB_MAX_ISOC_FRAMES;
 832
 833         buf = kmalloc(size, mem_flags);
 834         if (!buf) {
 835                 usb_free_urb(urb);
 836                 return -ENOMEM;
 837         }
 838
 839         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 840
 841         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 842                          hdev, data->isoc_rx_ep->bInterval);
 843
 844         urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
 845
 846         __fill_isoc_descriptor(urb, size,
 847                                le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 848
 849         usb_anchor_urb(urb, &data->isoc_anchor);
 850
 851         err = usb_submit_urb(urb, mem_flags);
 852         if (err < 0) {
 853                 if (err != -EPERM && err != -ENODEV)
 854                         BT_ERR("%s urb %p submission failed (%d)",
 855                                hdev->name, urb, -err);
 856                 usb_unanchor_urb(urb);
 857         }
 858
 859         usb_free_urb(urb);
 860
 861         return err;
 862 }
 863
 864 static void btusb_tx_complete(struct urb *urb)
 865 {
 866         struct sk_buff *skb = urb->context;
 867         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
 868         struct btusb_data *data = hci_get_drvdata(hdev);
 869
 870         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 871                urb->actual_length);
 872
 873         if (!test_bit(HCI_RUNNING, &hdev->flags))
 874                 goto done;
 875
 876         if (!urb->status)
 877                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 878         else
 879                 hdev->stat.err_tx++;
 880
 881 done:
 882         spin_lock(&data->txlock);
 883         data->tx_in_flight--;
 884         spin_unlock(&data->txlock);
 885
 886         kfree(urb->setup_packet);
 887
 888         kfree_skb(skb);
 889 }
 890
 891 static void btusb_isoc_tx_complete(struct urb *urb)
 892 {
 893         struct sk_buff *skb = urb->context;
 894         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
 895
 896         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 897                urb->actual_length);
 898
 899         if (!test_bit(HCI_RUNNING, &hdev->flags))
 900                 goto done;
 901
 902         if (!urb->status)
 903                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 904         else
 905                 hdev->stat.err_tx++;
 906
 907 done:
 908         kfree(urb->setup_packet);
 909
 910         kfree_skb(skb);
 911 }
 912
 913 static int btusb_open(struct hci_dev *hdev)
 914 {
 915         struct btusb_data *data = hci_get_drvdata(hdev);
 916         int err;
 917
 918         BT_DBG("%s", hdev->name);
 919
 920         /* Patching USB firmware files prior to starting any URBs of HCI path
 921          * It is more safe to use USB bulk channel for downloading USB patch
 922          */
 923         if (data->setup_on_usb) {
 924                 err = data->setup_on_usb(hdev);
 925                 if (err < 0)
 926                         return err;
 927         }
 928
 929         err = usb_autopm_get_interface(data->intf);
 930         if (err < 0)
 931                 return err;
 932
 933         data->intf->needs_remote_wakeup = 1;
 934
 935         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 936                 goto done;
 937
 938         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 939                 goto done;
 940
 941         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 942         if (err < 0)
 943                 goto failed;
 944
 945         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 946         if (err < 0) {
 947                 usb_kill_anchored_urbs(&data->intr_anchor);
 948                 goto failed;
 949         }
 950
 951         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 952         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 953
 954 done:
 955         usb_autopm_put_interface(data->intf);
 956         return 0;
 957
 958 failed:
 959         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 960         clear_bit(HCI_RUNNING, &hdev->flags);
 961         usb_autopm_put_interface(data->intf);
 962         return err;
 963 }
 964
 965 static void btusb_stop_traffic(struct btusb_data *data)
 966 {
 967         usb_kill_anchored_urbs(&data->intr_anchor);
 968         usb_kill_anchored_urbs(&data->bulk_anchor);
 969         usb_kill_anchored_urbs(&data->isoc_anchor);
 970 }
 971
 972 static int btusb_close(struct hci_dev *hdev)
 973 {
 974         struct btusb_data *data = hci_get_drvdata(hdev);
 975         int err;
 976
 977         BT_DBG("%s", hdev->name);
 978
 979         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 980                 return 0;
 981
 982         cancel_work_sync(&data->work);
 983         cancel_work_sync(&data->waker);
 984
 985         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 986         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 987         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 988
 989         btusb_stop_traffic(data);
 990         btusb_free_frags(data);
 991
 992         err = usb_autopm_get_interface(data->intf);
 993         if (err < 0)
 994                 goto failed;
 995
 996         data->intf->needs_remote_wakeup = 0;
 997         usb_autopm_put_interface(data->intf);
 998
 999 failed:
1000         usb_scuttle_anchored_urbs(&data->deferred);
1001         return 0;
1002 }
1003
1004 static int btusb_flush(struct hci_dev *hdev)
1005 {
1006         struct btusb_data *data = hci_get_drvdata(hdev);
1007
1008         BT_DBG("%s", hdev->name);
1009
1010         usb_kill_anchored_urbs(&data->tx_anchor);
1011         btusb_free_frags(data);
1012
1013         return 0;
1014 }
1015
1016 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
1017 {
1018         struct btusb_data *data = hci_get_drvdata(hdev);
1019         struct usb_ctrlrequest *dr;
1020         struct urb *urb;
1021         unsigned int pipe;
1022
1023         urb = usb_alloc_urb(0, GFP_KERNEL);
1024         if (!urb)
1025                 return ERR_PTR(-ENOMEM);
1026
1027         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
1028         if (!dr) {
1029                 usb_free_urb(urb);
1030                 return ERR_PTR(-ENOMEM);
1031         }
1032
1033         dr->bRequestType = data->cmdreq_type;
1034         dr->bRequest     = data->cmdreq;
1035         dr->wIndex       = 0;
1036         dr->wValue       = 0;
1037         dr->wLength      = __cpu_to_le16(skb->len);
1038
1039         pipe = usb_sndctrlpipe(data->udev, 0x00);
1040
1041         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
1042                              skb->data, skb->len, btusb_tx_complete, skb);
1043
1044         skb->dev = (void *)hdev;
1045
1046         return urb;
1047 }
1048
1049 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
1050 {
1051         struct btusb_data *data = hci_get_drvdata(hdev);
1052         struct urb *urb;
1053         unsigned int pipe;
1054
1055         if (!data->bulk_tx_ep)
1056                 return ERR_PTR(-ENODEV);
1057
1058         urb = usb_alloc_urb(0, GFP_KERNEL);
1059         if (!urb)
1060                 return ERR_PTR(-ENOMEM);
1061
1062         pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1063
1064         usb_fill_bulk_urb(urb, data->udev, pipe,
1065                           skb->data, skb->len, btusb_tx_complete, skb);
1066
1067         skb->dev = (void *)hdev;
1068
1069         return urb;
1070 }
1071
1072 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1073 {
1074         struct btusb_data *data = hci_get_drvdata(hdev);
1075         struct urb *urb;
1076         unsigned int pipe;
1077
1078         if (!data->isoc_tx_ep)
1079                 return ERR_PTR(-ENODEV);
1080
1081         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1082         if (!urb)
1083                 return ERR_PTR(-ENOMEM);
1084
1085         pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1086
1087         usb_fill_int_urb(urb, data->udev, pipe,
1088                          skb->data, skb->len, btusb_isoc_tx_complete,
1089                          skb, data->isoc_tx_ep->bInterval);
1090
1091         urb->transfer_flags  = URB_ISO_ASAP;
1092
1093         __fill_isoc_descriptor(urb, skb->len,
1094                                le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1095
1096         skb->dev = (void *)hdev;
1097
1098         return urb;
1099 }
1100
1101 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1102 {
1103         struct btusb_data *data = hci_get_drvdata(hdev);
1104         int err;
1105
1106         usb_anchor_urb(urb, &data->tx_anchor);
1107
1108         err = usb_submit_urb(urb, GFP_KERNEL);
1109         if (err < 0) {
1110                 if (err != -EPERM && err != -ENODEV)
1111                         BT_ERR("%s urb %p submission failed (%d)",
1112                                hdev->name, urb, -err);
1113                 kfree(urb->setup_packet);
1114                 usb_unanchor_urb(urb);
1115         } else {
1116                 usb_mark_last_busy(data->udev);
1117         }
1118
1119         usb_free_urb(urb);
1120         return err;
1121 }
1122
1123 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1124 {
1125         struct btusb_data *data = hci_get_drvdata(hdev);
1126         unsigned long flags;
1127         bool suspending;
1128
1129         spin_lock_irqsave(&data->txlock, flags);
1130         suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1131         if (!suspending)
1132                 data->tx_in_flight++;
1133         spin_unlock_irqrestore(&data->txlock, flags);
1134
1135         if (!suspending)
1136                 return submit_tx_urb(hdev, urb);
1137
1138         usb_anchor_urb(urb, &data->deferred);
1139         schedule_work(&data->waker);
1140
1141         usb_free_urb(urb);
1142         return 0;
1143 }
1144
1145 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1146 {
1147         struct urb *urb;
1148
1149         BT_DBG("%s", hdev->name);
1150
1151         if (!test_bit(HCI_RUNNING, &hdev->flags))
1152                 return -EBUSY;
1153
1154         switch (bt_cb(skb)->pkt_type) {
1155         case HCI_COMMAND_PKT:
1156                 urb = alloc_ctrl_urb(hdev, skb);
1157                 if (IS_ERR(urb))
1158                         return PTR_ERR(urb);
1159
1160                 hdev->stat.cmd_tx++;
1161                 return submit_or_queue_tx_urb(hdev, urb);
1162
1163         case HCI_ACLDATA_PKT:
1164                 urb = alloc_bulk_urb(hdev, skb);
1165                 if (IS_ERR(urb))
1166                         return PTR_ERR(urb);
1167
1168                 hdev->stat.acl_tx++;
1169                 return submit_or_queue_tx_urb(hdev, urb);
1170
1171         case HCI_SCODATA_PKT:
1172                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1173                         return -ENODEV;
1174
1175                 urb = alloc_isoc_urb(hdev, skb);
1176                 if (IS_ERR(urb))
1177                         return PTR_ERR(urb);
1178
1179                 hdev->stat.sco_tx++;
1180                 return submit_tx_urb(hdev, urb);
1181         }
1182
1183         return -EILSEQ;
1184 }
1185
1186 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1187 {
1188         struct btusb_data *data = hci_get_drvdata(hdev);
1189
1190         BT_DBG("%s evt %d", hdev->name, evt);
1191
1192         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1193                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1194                 schedule_work(&data->work);
1195         }
1196 }
1197
1198 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1199 {
1200         struct btusb_data *data = hci_get_drvdata(hdev);
1201         struct usb_interface *intf = data->isoc;
1202         struct usb_endpoint_descriptor *ep_desc;
1203         int i, err;
1204
1205         if (!data->isoc)
1206                 return -ENODEV;
1207
1208         err = usb_set_interface(data->udev, 1, altsetting);
1209         if (err < 0) {
1210                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
1211                 return err;
1212         }
1213
1214         data->isoc_altsetting = altsetting;
1215
1216         data->isoc_tx_ep = NULL;
1217         data->isoc_rx_ep = NULL;
1218
1219         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1220                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1221
1222                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1223                         data->isoc_tx_ep = ep_desc;
1224                         continue;
1225                 }
1226
1227                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1228                         data->isoc_rx_ep = ep_desc;
1229                         continue;
1230                 }
1231         }
1232
1233         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1234                 BT_ERR("%s invalid SCO descriptors", hdev->name);
1235                 return -ENODEV;
1236         }
1237
1238         return 0;
1239 }
1240
1241 static void btusb_work(struct work_struct *work)
1242 {
1243         struct btusb_data *data = container_of(work, struct btusb_data, work);
1244         struct hci_dev *hdev = data->hdev;
1245         int new_alts;
1246         int err;
1247
1248         if (data->sco_num > 0) {
1249                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1250                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1251                         if (err < 0) {
1252                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1253                                 usb_kill_anchored_urbs(&data->isoc_anchor);
1254                                 return;
1255                         }
1256
1257                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1258                 }
1259
1260                 if (hdev->voice_setting & 0x0020) {
1261                         static const int alts[3] = { 2, 4, 5 };
1262
1263                         new_alts = alts[data->sco_num - 1];
1264                 } else {
1265                         new_alts = data->sco_num;
1266                 }
1267
1268                 if (data->isoc_altsetting != new_alts) {
1269                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1270                         usb_kill_anchored_urbs(&data->isoc_anchor);
1271
1272                         if (__set_isoc_interface(hdev, new_alts) < 0)
1273                                 return;
1274                 }
1275
1276                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1277                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1278                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1279                         else
1280                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1281                 }
1282         } else {
1283                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1284                 usb_kill_anchored_urbs(&data->isoc_anchor);
1285
1286                 __set_isoc_interface(hdev, 0);
1287                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1288                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1289         }
1290 }
1291
1292 static void btusb_waker(struct work_struct *work)
1293 {
1294         struct btusb_data *data = container_of(work, struct btusb_data, waker);
1295         int err;
1296
1297         err = usb_autopm_get_interface(data->intf);
1298         if (err < 0)
1299                 return;
1300
1301         usb_autopm_put_interface(data->intf);
1302 }
1303
1304 static struct sk_buff *btusb_read_local_version(struct hci_dev *hdev)
1305 {
1306         struct sk_buff *skb;
1307
1308         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1309                              HCI_INIT_TIMEOUT);
1310         if (IS_ERR(skb)) {
1311                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION failed (%ld)",
1312                        hdev->name, PTR_ERR(skb));
1313                 return skb;
1314         }
1315
1316         if (skb->len != sizeof(struct hci_rp_read_local_version)) {
1317                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION event length mismatch",
1318                        hdev->name);
1319                 kfree_skb(skb);
1320                 return ERR_PTR(-EIO);
1321         }
1322
1323         return skb;
1324 }
1325
1326 static int btusb_setup_bcm92035(struct hci_dev *hdev)
1327 {
1328         struct sk_buff *skb;
1329         u8 val = 0x00;
1330
1331         BT_DBG("%s", hdev->name);
1332
1333         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1334         if (IS_ERR(skb))
1335                 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
1336         else
1337                 kfree_skb(skb);
1338
1339         return 0;
1340 }
1341
1342 static int btusb_setup_csr(struct hci_dev *hdev)
1343 {
1344         struct hci_rp_read_local_version *rp;
1345         struct sk_buff *skb;
1346         int ret;
1347
1348         BT_DBG("%s", hdev->name);
1349
1350         skb = btusb_read_local_version(hdev);
1351         if (IS_ERR(skb))
1352                 return -PTR_ERR(skb);
1353
1354         rp = (struct hci_rp_read_local_version *)skb->data;
1355
1356         if (!rp->status) {
1357                 if (le16_to_cpu(rp->manufacturer) != 10) {
1358                         /* Clear the reset quirk since this is not an actual
1359                          * early Bluetooth 1.1 device from CSR.
1360                          */
1361                         clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1362
1363                         /* These fake CSR controllers have all a broken
1364                          * stored link key handling and so just disable it.
1365                          */
1366                         set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY,
1367                                 &hdev->quirks);
1368                 }
1369         }
1370
1371         ret = -bt_to_errno(rp->status);
1372
1373         kfree_skb(skb);
1374
1375         return ret;
1376 }
1377
1378 #define RTL_FRAG_LEN 252
1379
1380 struct rtl_download_cmd {
1381         __u8 index;
1382         __u8 data[RTL_FRAG_LEN];
1383 } __packed;
1384
1385 struct rtl_download_response {
1386         __u8 status;
1387         __u8 index;
1388 } __packed;
1389
1390 struct rtl_rom_version_evt {
1391         __u8 status;
1392         __u8 version;
1393 } __packed;
1394
1395 struct rtl_epatch_header {
1396         __u8 signature[8];
1397         __le32 fw_version;
1398         __le16 num_patches;
1399 } __packed;
1400
1401 #define RTL_EPATCH_SIGNATURE    "Realtech"
1402 #define RTL_ROM_LMP_3499        0x3499
1403 #define RTL_ROM_LMP_8723A       0x1200
1404 #define RTL_ROM_LMP_8723B       0x8723
1405 #define RTL_ROM_LMP_8821A       0x8821
1406 #define RTL_ROM_LMP_8761A       0x8761
1407
1408 static int rtl_read_rom_version(struct hci_dev *hdev, u8 *version)
1409 {
1410         struct rtl_rom_version_evt *rom_version;
1411         struct sk_buff *skb;
1412         int ret;
1413
1414         /* Read RTL ROM version command */
1415         skb = __hci_cmd_sync(hdev, 0xfc6d, 0, NULL, HCI_INIT_TIMEOUT);
1416         if (IS_ERR(skb)) {
1417                 BT_ERR("%s: Read ROM version failed (%ld)",
1418                        hdev->name, PTR_ERR(skb));
1419                 return PTR_ERR(skb);
1420         }
1421
1422         if (skb->len != sizeof(*rom_version)) {
1423                 BT_ERR("%s: RTL version event length mismatch", hdev->name);
1424                 kfree_skb(skb);
1425                 return -EIO;
1426         }
1427
1428         rom_version = (struct rtl_rom_version_evt *)skb->data;
1429         BT_INFO("%s: rom_version status=%x version=%x",
1430                 hdev->name, rom_version->status, rom_version->version);
1431
1432         ret = rom_version->status;
1433         if (ret == 0)
1434                 *version = rom_version->version;
1435
1436         kfree_skb(skb);
1437         return ret;
1438 }
1439
1440 static int rtl8723b_parse_firmware(struct hci_dev *hdev, u16 lmp_subver,
1441                                    const struct firmware *fw,
1442                                    unsigned char **_buf)
1443 {
1444         const u8 extension_sig[] = { 0x51, 0x04, 0xfd, 0x77 };
1445         struct rtl_epatch_header *epatch_info;
1446         unsigned char *buf;
1447         int i, ret, len;
1448         size_t min_size;
1449         u8 opcode, length, data, rom_version = 0;
1450         int project_id = -1;
1451         const unsigned char *fwptr, *chip_id_base;
1452         const unsigned char *patch_length_base, *patch_offset_base;
1453         u32 patch_offset = 0;
1454         u16 patch_length, num_patches;
1455         const u16 project_id_to_lmp_subver[] = {
1456                 RTL_ROM_LMP_8723A,
1457                 RTL_ROM_LMP_8723B,
1458                 RTL_ROM_LMP_8821A,
1459                 RTL_ROM_LMP_8761A
1460         };
1461
1462         ret = rtl_read_rom_version(hdev, &rom_version);
1463         if (ret)
1464                 return -bt_to_errno(ret);
1465
1466         min_size = sizeof(struct rtl_epatch_header) + sizeof(extension_sig) + 3;
1467         if (fw->size < min_size)
1468                 return -EINVAL;
1469
1470         fwptr = fw->data + fw->size - sizeof(extension_sig);
1471         if (memcmp(fwptr, extension_sig, sizeof(extension_sig)) != 0) {
1472                 BT_ERR("%s: extension section signature mismatch", hdev->name);
1473                 return -EINVAL;
1474         }
1475
1476         /* Loop from the end of the firmware parsing instructions, until
1477          * we find an instruction that identifies the "project ID" for the
1478          * hardware supported by this firwmare file.
1479          * Once we have that, we double-check that that project_id is suitable
1480          * for the hardware we are working with.
1481          */
1482         while (fwptr >= fw->data + (sizeof(struct rtl_epatch_header) + 3)) {
1483                 opcode = *--fwptr;
1484                 length = *--fwptr;
1485                 data = *--fwptr;
1486
1487                 BT_DBG("check op=%x len=%x data=%x", opcode, length, data);
1488
1489                 if (opcode == 0xff) /* EOF */
1490                         break;
1491
1492                 if (length == 0) {
1493                         BT_ERR("%s: found instruction with length 0",
1494                                hdev->name);
1495                         return -EINVAL;
1496                 }
1497
1498                 if (opcode == 0 && length == 1) {
1499                         project_id = data;
1500                         break;
1501                 }
1502
1503                 fwptr -= length;
1504         }
1505
1506         if (project_id < 0) {
1507                 BT_ERR("%s: failed to find version instruction", hdev->name);
1508                 return -EINVAL;
1509         }
1510
1511         if (project_id >= ARRAY_SIZE(project_id_to_lmp_subver)) {
1512                 BT_ERR("%s: unknown project id %d", hdev->name, project_id);
1513                 return -EINVAL;
1514         }
1515
1516         if (lmp_subver != project_id_to_lmp_subver[project_id]) {
1517                 BT_ERR("%s: firmware is for %x but this is a %x", hdev->name,
1518                        project_id_to_lmp_subver[project_id], lmp_subver);
1519                 return -EINVAL;
1520         }
1521
1522         epatch_info = (struct rtl_epatch_header *)fw->data;
1523         if (memcmp(epatch_info->signature, RTL_EPATCH_SIGNATURE, 8) != 0) {
1524                 BT_ERR("%s: bad EPATCH signature", hdev->name);
1525                 return -EINVAL;
1526         }
1527
1528         num_patches = le16_to_cpu(epatch_info->num_patches);
1529         BT_DBG("fw_version=%x, num_patches=%d",
1530                le32_to_cpu(epatch_info->fw_version), num_patches);
1531
1532         /* After the rtl_epatch_header there is a funky patch metadata section.
1533          * Assuming 2 patches, the layout is:
1534          * ChipID1 ChipID2 PatchLength1 PatchLength2 PatchOffset1 PatchOffset2
1535          *
1536          * Find the right patch for this chip.
1537          */
1538         min_size += 8 * num_patches;
1539         if (fw->size < min_size)
1540                 return -EINVAL;
1541
1542         chip_id_base = fw->data + sizeof(struct rtl_epatch_header);
1543         patch_length_base = chip_id_base + (sizeof(u16) * num_patches);
1544         patch_offset_base = patch_length_base + (sizeof(u16) * num_patches);
1545         for (i = 0; i < num_patches; i++) {
1546                 u16 chip_id = get_unaligned_le16(chip_id_base +
1547                                                  (i * sizeof(u16)));
1548                 if (chip_id == rom_version + 1) {
1549                         patch_length = get_unaligned_le16(patch_length_base +
1550                                                           (i * sizeof(u16)));
1551                         patch_offset = get_unaligned_le32(patch_offset_base +
1552                                                           (i * sizeof(u32)));
1553                         break;
1554                 }
1555         }
1556
1557         if (!patch_offset) {
1558                 BT_ERR("%s: didn't find patch for chip id %d",
1559                        hdev->name, rom_version);
1560                 return -EINVAL;
1561         }
1562
1563         BT_DBG("length=%x offset=%x index %d", patch_length, patch_offset, i);
1564         min_size = patch_offset + patch_length;
1565         if (fw->size < min_size)
1566                 return -EINVAL;
1567
1568         /* Copy the firmware into a new buffer and write the version at
1569          * the end.
1570          */
1571         len = patch_length;
1572         buf = kmemdup(fw->data + patch_offset, patch_length, GFP_KERNEL);
1573         if (!buf)
1574                 return -ENOMEM;
1575
1576         memcpy(buf + patch_length - 4, &epatch_info->fw_version, 4);
1577
1578         *_buf = buf;
1579         return len;
1580 }
1581
1582 static int rtl_download_firmware(struct hci_dev *hdev,
1583                                  const unsigned char *data, int fw_len)
1584 {
1585         struct rtl_download_cmd *dl_cmd;
1586         int frag_num = fw_len / RTL_FRAG_LEN + 1;
1587         int frag_len = RTL_FRAG_LEN;
1588         int ret = 0;
1589         int i;
1590
1591         dl_cmd = kmalloc(sizeof(struct rtl_download_cmd), GFP_KERNEL);
1592         if (!dl_cmd)
1593                 return -ENOMEM;
1594
1595         for (i = 0; i < frag_num; i++) {
1596                 struct rtl_download_response *dl_resp;
1597                 struct sk_buff *skb;
1598
1599                 BT_DBG("download fw (%d/%d)", i, frag_num);
1600
1601                 dl_cmd->index = i;
1602                 if (i == (frag_num - 1)) {
1603                         dl_cmd->index |= 0x80; /* data end */
1604                         frag_len = fw_len % RTL_FRAG_LEN;
1605                 }
1606                 memcpy(dl_cmd->data, data, frag_len);
1607
1608                 /* Send download command */
1609                 skb = __hci_cmd_sync(hdev, 0xfc20, frag_len + 1, dl_cmd,
1610                                      HCI_INIT_TIMEOUT);
1611                 if (IS_ERR(skb)) {
1612                         BT_ERR("%s: download fw command failed (%ld)",
1613                                hdev->name, PTR_ERR(skb));
1614                         ret = -PTR_ERR(skb);
1615                         goto out;
1616                 }
1617
1618                 if (skb->len != sizeof(*dl_resp)) {
1619                         BT_ERR("%s: download fw event length mismatch",
1620                                hdev->name);
1621                         kfree_skb(skb);
1622                         ret = -EIO;
1623                         goto out;
1624                 }
1625
1626                 dl_resp = (struct rtl_download_response *)skb->data;
1627                 if (dl_resp->status != 0) {
1628                         kfree_skb(skb);
1629                         ret = bt_to_errno(dl_resp->status);
1630                         goto out;
1631                 }
1632
1633                 kfree_skb(skb);
1634                 data += RTL_FRAG_LEN;
1635         }
1636
1637 out:
1638         kfree(dl_cmd);
1639         return ret;
1640 }
1641
1642 static int btusb_setup_rtl8723a(struct hci_dev *hdev)
1643 {
1644         struct btusb_data *data = dev_get_drvdata(&hdev->dev);
1645         struct usb_device *udev = interface_to_usbdev(data->intf);
1646         const struct firmware *fw;
1647         int ret;
1648
1649         BT_INFO("%s: rtl: loading rtl_bt/rtl8723a_fw.bin", hdev->name);
1650         ret = request_firmware(&fw, "rtl_bt/rtl8723a_fw.bin", &udev->dev);
1651         if (ret < 0) {
1652                 BT_ERR("%s: Failed to load rtl_bt/rtl8723a_fw.bin", hdev->name);
1653                 return ret;
1654         }
1655
1656         if (fw->size < 8) {
1657                 ret = -EINVAL;
1658                 goto out;
1659         }
1660
1661         /* Check that the firmware doesn't have the epatch signature
1662          * (which is only for RTL8723B and newer).
1663          */
1664         if (!memcmp(fw->data, RTL_EPATCH_SIGNATURE, 8)) {
1665                 BT_ERR("%s: unexpected EPATCH signature!", hdev->name);
1666                 ret = -EINVAL;
1667                 goto out;
1668         }
1669
1670         ret = rtl_download_firmware(hdev, fw->data, fw->size);
1671
1672 out:
1673         release_firmware(fw);
1674         return ret;
1675 }
1676
1677 static int btusb_setup_rtl8723b(struct hci_dev *hdev, u16 lmp_subver,
1678                                 const char *fw_name)
1679 {
1680         struct btusb_data *data = dev_get_drvdata(&hdev->dev);
1681         struct usb_device *udev = interface_to_usbdev(data->intf);
1682         unsigned char *fw_data = NULL;
1683         const struct firmware *fw;
1684         int ret;
1685
1686         BT_INFO("%s: rtl: loading %s", hdev->name, fw_name);
1687         ret = request_firmware(&fw, fw_name, &udev->dev);
1688         if (ret < 0) {
1689                 BT_ERR("%s: Failed to load %s", hdev->name, fw_name);
1690                 return ret;
1691         }
1692
1693         ret = rtl8723b_parse_firmware(hdev, lmp_subver, fw, &fw_data);
1694         if (ret < 0)
1695                 goto out;
1696
1697         ret = rtl_download_firmware(hdev, fw_data, ret);
1698         kfree(fw_data);
1699         if (ret < 0)
1700                 goto out;
1701
1702 out:
1703         release_firmware(fw);
1704         return ret;
1705 }
1706
1707 static int btusb_setup_realtek(struct hci_dev *hdev)
1708 {
1709         struct sk_buff *skb;
1710         struct hci_rp_read_local_version *resp;
1711         u16 lmp_subver;
1712
1713         skb = btusb_read_local_version(hdev);
1714         if (IS_ERR(skb))
1715                 return -PTR_ERR(skb);
1716
1717         resp = (struct hci_rp_read_local_version *)skb->data;
1718         BT_INFO("%s: rtl: examining hci_ver=%02x hci_rev=%04x lmp_ver=%02x "
1719                 "lmp_subver=%04x", hdev->name, resp->hci_ver, resp->hci_rev,
1720                 resp->lmp_ver, resp->lmp_subver);
1721
1722         lmp_subver = le16_to_cpu(resp->lmp_subver);
1723         kfree_skb(skb);
1724
1725         /* Match a set of subver values that correspond to stock firmware,
1726          * which is not compatible with standard btusb.
1727          * If matched, upload an alternative firmware that does conform to
1728          * standard btusb. Once that firmware is uploaded, the subver changes
1729          * to a different value.
1730          */
1731         switch (lmp_subver) {
1732         case RTL_ROM_LMP_8723A:
1733         case RTL_ROM_LMP_3499:
1734                 return btusb_setup_rtl8723a(hdev);
1735         case RTL_ROM_LMP_8723B:
1736                 return btusb_setup_rtl8723b(hdev, lmp_subver,
1737                                             "rtl_bt/rtl8723b_fw.bin");
1738         case RTL_ROM_LMP_8821A:
1739                 return btusb_setup_rtl8723b(hdev, lmp_subver,
1740                                             "rtl_bt/rtl8821a_fw.bin");
1741         case RTL_ROM_LMP_8761A:
1742                 return btusb_setup_rtl8723b(hdev, lmp_subver,
1743                                             "rtl_bt/rtl8761a_fw.bin");
1744         default:
1745                 BT_INFO("rtl: assuming no firmware upload needed.");
1746                 return 0;
1747         }
1748 }
1749
1750 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1751                                                        struct intel_version *ver)
1752 {
1753         const struct firmware *fw;
1754         char fwname[64];
1755         int ret;
1756
1757         snprintf(fwname, sizeof(fwname),
1758                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1759                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
1760                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1761                  ver->fw_build_ww, ver->fw_build_yy);
1762
1763         ret = request_firmware(&fw, fwname, &hdev->dev);
1764         if (ret < 0) {
1765                 if (ret == -EINVAL) {
1766                         BT_ERR("%s Intel firmware file request failed (%d)",
1767                                hdev->name, ret);
1768                         return NULL;
1769                 }
1770
1771                 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1772                        hdev->name, fwname, ret);
1773
1774                 /* If the correct firmware patch file is not found, use the
1775                  * default firmware patch file instead
1776                  */
1777                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1778                          ver->hw_platform, ver->hw_variant);
1779                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1780                         BT_ERR("%s failed to open default Intel fw file: %s",
1781                                hdev->name, fwname);
1782                         return NULL;
1783                 }
1784         }
1785
1786         BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1787
1788         return fw;
1789 }
1790
1791 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1792                                       const struct firmware *fw,
1793                                       const u8 **fw_ptr, int *disable_patch)
1794 {
1795         struct sk_buff *skb;
1796         struct hci_command_hdr *cmd;
1797         const u8 *cmd_param;
1798         struct hci_event_hdr *evt = NULL;
1799         const u8 *evt_param = NULL;
1800         int remain = fw->size - (*fw_ptr - fw->data);
1801
1802         /* The first byte indicates the types of the patch command or event.
1803          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1804          * in the current firmware buffer doesn't start with 0x01 or
1805          * the size of remain buffer is smaller than HCI command header,
1806          * the firmware file is corrupted and it should stop the patching
1807          * process.
1808          */
1809         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1810                 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1811                 return -EINVAL;
1812         }
1813         (*fw_ptr)++;
1814         remain--;
1815
1816         cmd = (struct hci_command_hdr *)(*fw_ptr);
1817         *fw_ptr += sizeof(*cmd);
1818         remain -= sizeof(*cmd);
1819
1820         /* Ensure that the remain firmware data is long enough than the length
1821          * of command parameter. If not, the firmware file is corrupted.
1822          */
1823         if (remain < cmd->plen) {
1824                 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1825                 return -EFAULT;
1826         }
1827
1828         /* If there is a command that loads a patch in the firmware
1829          * file, then enable the patch upon success, otherwise just
1830          * disable the manufacturer mode, for example patch activation
1831          * is not required when the default firmware patch file is used
1832          * because there are no patch data to load.
1833          */
1834         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1835                 *disable_patch = 0;
1836
1837         cmd_param = *fw_ptr;
1838         *fw_ptr += cmd->plen;
1839         remain -= cmd->plen;
1840
1841         /* This reads the expected events when the above command is sent to the
1842          * device. Some vendor commands expects more than one events, for
1843          * example command status event followed by vendor specific event.
1844          * For this case, it only keeps the last expected event. so the command
1845          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1846          * last expected event.
1847          */
1848         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1849                 (*fw_ptr)++;
1850                 remain--;
1851
1852                 evt = (struct hci_event_hdr *)(*fw_ptr);
1853                 *fw_ptr += sizeof(*evt);
1854                 remain -= sizeof(*evt);
1855
1856                 if (remain < evt->plen) {
1857                         BT_ERR("%s Intel fw corrupted: invalid evt len",
1858                                hdev->name);
1859                         return -EFAULT;
1860                 }
1861
1862                 evt_param = *fw_ptr;
1863                 *fw_ptr += evt->plen;
1864                 remain -= evt->plen;
1865         }
1866
1867         /* Every HCI commands in the firmware file has its correspond event.
1868          * If event is not found or remain is smaller than zero, the firmware
1869          * file is corrupted.
1870          */
1871         if (!evt || !evt_param || remain < 0) {
1872                 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1873                 return -EFAULT;
1874         }
1875
1876         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1877                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1878         if (IS_ERR(skb)) {
1879                 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1880                        hdev->name, cmd->opcode, PTR_ERR(skb));
1881                 return PTR_ERR(skb);
1882         }
1883
1884         /* It ensures that the returned event matches the event data read from
1885          * the firmware file. At fist, it checks the length and then
1886          * the contents of the event.
1887          */
1888         if (skb->len != evt->plen) {
1889                 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1890                        le16_to_cpu(cmd->opcode));
1891                 kfree_skb(skb);
1892                 return -EFAULT;
1893         }
1894
1895         if (memcmp(skb->data, evt_param, evt->plen)) {
1896                 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1897                        hdev->name, le16_to_cpu(cmd->opcode));
1898                 kfree_skb(skb);
1899                 return -EFAULT;
1900         }
1901         kfree_skb(skb);
1902
1903         return 0;
1904 }
1905
1906 static int btusb_setup_intel(struct hci_dev *hdev)
1907 {
1908         struct sk_buff *skb;
1909         const struct firmware *fw;
1910         const u8 *fw_ptr;
1911         int disable_patch;
1912         struct intel_version *ver;
1913
1914         const u8 mfg_enable[] = { 0x01, 0x00 };
1915         const u8 mfg_disable[] = { 0x00, 0x00 };
1916         const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
1917         const u8 mfg_reset_activate[] = { 0x00, 0x02 };
1918
1919         BT_DBG("%s", hdev->name);
1920
1921         /* The controller has a bug with the first HCI command sent to it
1922          * returning number of completed commands as zero. This would stall the
1923          * command processing in the Bluetooth core.
1924          *
1925          * As a workaround, send HCI Reset command first which will reset the
1926          * number of completed commands and allow normal command processing
1927          * from now on.
1928          */
1929         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1930         if (IS_ERR(skb)) {
1931                 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1932                        hdev->name, PTR_ERR(skb));
1933                 return PTR_ERR(skb);
1934         }
1935         kfree_skb(skb);
1936
1937         /* Read Intel specific controller version first to allow selection of
1938          * which firmware file to load.
1939          *
1940          * The returned information are hardware variant and revision plus
1941          * firmware variant, revision and build number.
1942          */
1943         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1944         if (IS_ERR(skb)) {
1945                 BT_ERR("%s reading Intel fw version command failed (%ld)",
1946                        hdev->name, PTR_ERR(skb));
1947                 return PTR_ERR(skb);
1948         }
1949
1950         if (skb->len != sizeof(*ver)) {
1951                 BT_ERR("%s Intel version event length mismatch", hdev->name);
1952                 kfree_skb(skb);
1953                 return -EIO;
1954         }
1955
1956         ver = (struct intel_version *)skb->data;
1957         if (ver->status) {
1958                 BT_ERR("%s Intel fw version event failed (%02x)", hdev->name,
1959                        ver->status);
1960                 kfree_skb(skb);
1961                 return -bt_to_errno(ver->status);
1962         }
1963
1964         BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1965                 hdev->name, ver->hw_platform, ver->hw_variant,
1966                 ver->hw_revision, ver->fw_variant,  ver->fw_revision,
1967                 ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
1968                 ver->fw_patch_num);
1969
1970         /* fw_patch_num indicates the version of patch the device currently
1971          * have. If there is no patch data in the device, it is always 0x00.
1972          * So, if it is other than 0x00, no need to patch the deivce again.
1973          */
1974         if (ver->fw_patch_num) {
1975                 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1976                         hdev->name, ver->fw_patch_num);
1977                 kfree_skb(skb);
1978                 btintel_check_bdaddr(hdev);
1979                 return 0;
1980         }
1981
1982         /* Opens the firmware patch file based on the firmware version read
1983          * from the controller. If it fails to open the matching firmware
1984          * patch file, it tries to open the default firmware patch file.
1985          * If no patch file is found, allow the device to operate without
1986          * a patch.
1987          */
1988         fw = btusb_setup_intel_get_fw(hdev, ver);
1989         if (!fw) {
1990                 kfree_skb(skb);
1991                 btintel_check_bdaddr(hdev);
1992                 return 0;
1993         }
1994         fw_ptr = fw->data;
1995
1996         /* This Intel specific command enables the manufacturer mode of the
1997          * controller.
1998          *
1999          * Only while this mode is enabled, the driver can download the
2000          * firmware patch data and configuration parameters.
2001          */
2002         skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
2003         if (IS_ERR(skb)) {
2004                 BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
2005                        hdev->name, PTR_ERR(skb));
2006                 release_firmware(fw);
2007                 return PTR_ERR(skb);
2008         }
2009
2010         if (skb->data[0]) {
2011                 u8 evt_status = skb->data[0];
2012
2013                 BT_ERR("%s enable Intel manufacturer mode event failed (%02x)",
2014                        hdev->name, evt_status);
2015                 kfree_skb(skb);
2016                 release_firmware(fw);
2017                 return -bt_to_errno(evt_status);
2018         }
2019         kfree_skb(skb);
2020
2021         disable_patch = 1;
2022
2023         /* The firmware data file consists of list of Intel specific HCI
2024          * commands and its expected events. The first byte indicates the
2025          * type of the message, either HCI command or HCI event.
2026          *
2027          * It reads the command and its expected event from the firmware file,
2028          * and send to the controller. Once __hci_cmd_sync_ev() returns,
2029          * the returned event is compared with the event read from the firmware
2030          * file and it will continue until all the messages are downloaded to
2031          * the controller.
2032          *
2033          * Once the firmware patching is completed successfully,
2034          * the manufacturer mode is disabled with reset and activating the
2035          * downloaded patch.
2036          *
2037          * If the firmware patching fails, the manufacturer mode is
2038          * disabled with reset and deactivating the patch.
2039          *
2040          * If the default patch file is used, no reset is done when disabling
2041          * the manufacturer.
2042          */
2043         while (fw->size > fw_ptr - fw->data) {
2044                 int ret;
2045
2046                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
2047                                                  &disable_patch);
2048                 if (ret < 0)
2049                         goto exit_mfg_deactivate;
2050         }
2051
2052         release_firmware(fw);
2053
2054         if (disable_patch)
2055                 goto exit_mfg_disable;
2056
2057         /* Patching completed successfully and disable the manufacturer mode
2058          * with reset and activate the downloaded firmware patches.
2059          */
2060         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
2061                              mfg_reset_activate, HCI_INIT_TIMEOUT);
2062         if (IS_ERR(skb)) {
2063                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
2064                        hdev->name, PTR_ERR(skb));
2065                 return PTR_ERR(skb);
2066         }
2067         kfree_skb(skb);
2068
2069         BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
2070                 hdev->name);
2071
2072         btintel_check_bdaddr(hdev);
2073         return 0;
2074
2075 exit_mfg_disable:
2076         /* Disable the manufacturer mode without reset */
2077         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
2078                              HCI_INIT_TIMEOUT);
2079         if (IS_ERR(skb)) {
2080                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
2081                        hdev->name, PTR_ERR(skb));
2082                 return PTR_ERR(skb);
2083         }
2084         kfree_skb(skb);
2085
2086         BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
2087
2088         btintel_check_bdaddr(hdev);
2089         return 0;
2090
2091 exit_mfg_deactivate:
2092         release_firmware(fw);
2093
2094         /* Patching failed. Disable the manufacturer mode with reset and
2095          * deactivate the downloaded firmware patches.
2096          */
2097         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
2098                              mfg_reset_deactivate, HCI_INIT_TIMEOUT);
2099         if (IS_ERR(skb)) {
2100                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
2101                        hdev->name, PTR_ERR(skb));
2102                 return PTR_ERR(skb);
2103         }
2104         kfree_skb(skb);
2105
2106         BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
2107                 hdev->name);
2108
2109         btintel_check_bdaddr(hdev);
2110         return 0;
2111 }
2112
2113 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
2114 {
2115         struct sk_buff *skb;
2116         struct hci_event_hdr *hdr;
2117         struct hci_ev_cmd_complete *evt;
2118
2119         skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_ATOMIC);
2120         if (!skb)
2121                 return -ENOMEM;
2122
2123         hdr = (struct hci_event_hdr *)skb_put(skb, sizeof(*hdr));
2124         hdr->evt = HCI_EV_CMD_COMPLETE;
2125         hdr->plen = sizeof(*evt) + 1;
2126
2127         evt = (struct hci_ev_cmd_complete *)skb_put(skb, sizeof(*evt));
2128         evt->ncmd = 0x01;
2129         evt->opcode = cpu_to_le16(opcode);
2130
2131         *skb_put(skb, 1) = 0x00;
2132
2133         bt_cb(skb)->pkt_type = HCI_EVENT_PKT;
2134
2135         return hci_recv_frame(hdev, skb);
2136 }
2137
2138 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
2139                                  int count)
2140 {
2141         /* When the device is in bootloader mode, then it can send
2142          * events via the bulk endpoint. These events are treated the
2143          * same way as the ones received from the interrupt endpoint.
2144          */
2145         if (test_bit(BTUSB_BOOTLOADER, &data->flags))
2146                 return btusb_recv_intr(data, buffer, count);
2147
2148         return btusb_recv_bulk(data, buffer, count);
2149 }
2150
2151 static void btusb_intel_bootup(struct btusb_data *data, const void *ptr,
2152                                unsigned int len)
2153 {
2154         const struct intel_bootup *evt = ptr;
2155
2156         if (len != sizeof(*evt))
2157                 return;
2158
2159         if (test_and_clear_bit(BTUSB_BOOTING, &data->flags)) {
2160                 smp_mb__after_atomic();
2161                 wake_up_bit(&data->flags, BTUSB_BOOTING);
2162         }
2163 }
2164
2165 static void btusb_intel_secure_send_result(struct btusb_data *data,
2166                                            const void *ptr, unsigned int len)
2167 {
2168         const struct intel_secure_send_result *evt = ptr;
2169
2170         if (len != sizeof(*evt))
2171                 return;
2172
2173         if (evt->result)
2174                 set_bit(BTUSB_FIRMWARE_FAILED, &data->flags);
2175
2176         if (test_and_clear_bit(BTUSB_DOWNLOADING, &data->flags) &&
2177             test_bit(BTUSB_FIRMWARE_LOADED, &data->flags)) {
2178                 smp_mb__after_atomic();
2179                 wake_up_bit(&data->flags, BTUSB_DOWNLOADING);
2180         }
2181 }
2182
2183 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
2184 {
2185         struct btusb_data *data = hci_get_drvdata(hdev);
2186
2187         if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
2188                 struct hci_event_hdr *hdr = (void *)skb->data;
2189
2190                 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
2191                     hdr->plen > 0) {
2192                         const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
2193                         unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
2194
2195                         switch (skb->data[2]) {
2196                         case 0x02:
2197                                 /* When switching to the operational firmware
2198                                  * the device sends a vendor specific event
2199                                  * indicating that the bootup completed.
2200                                  */
2201                                 btusb_intel_bootup(data, ptr, len);
2202                                 break;
2203                         case 0x06:
2204                                 /* When the firmware loading completes the
2205                                  * device sends out a vendor specific event
2206                                  * indicating the result of the firmware
2207                                  * loading.
2208                                  */
2209                                 btusb_intel_secure_send_result(data, ptr, len);
2210                                 break;
2211                         }
2212                 }
2213         }
2214
2215         return hci_recv_frame(hdev, skb);
2216 }
2217
2218 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
2219 {
2220         struct btusb_data *data = hci_get_drvdata(hdev);
2221         struct urb *urb;
2222
2223         BT_DBG("%s", hdev->name);
2224
2225         if (!test_bit(HCI_RUNNING, &hdev->flags))
2226                 return -EBUSY;
2227
2228         switch (bt_cb(skb)->pkt_type) {
2229         case HCI_COMMAND_PKT:
2230                 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
2231                         struct hci_command_hdr *cmd = (void *)skb->data;
2232                         __u16 opcode = le16_to_cpu(cmd->opcode);
2233
2234                         /* When in bootloader mode and the command 0xfc09
2235                          * is received, it needs to be send down the
2236                          * bulk endpoint. So allocate a bulk URB instead.
2237                          */
2238                         if (opcode == 0xfc09)
2239                                 urb = alloc_bulk_urb(hdev, skb);
2240                         else
2241                                 urb = alloc_ctrl_urb(hdev, skb);
2242
2243                         /* When the 0xfc01 command is issued to boot into
2244                          * the operational firmware, it will actually not
2245                          * send a command complete event. To keep the flow
2246                          * control working inject that event here.
2247                          */
2248                         if (opcode == 0xfc01)
2249                                 inject_cmd_complete(hdev, opcode);
2250                 } else {
2251                         urb = alloc_ctrl_urb(hdev, skb);
2252                 }
2253                 if (IS_ERR(urb))
2254                         return PTR_ERR(urb);
2255
2256                 hdev->stat.cmd_tx++;
2257                 return submit_or_queue_tx_urb(hdev, urb);
2258
2259         case HCI_ACLDATA_PKT:
2260                 urb = alloc_bulk_urb(hdev, skb);
2261                 if (IS_ERR(urb))
2262                         return PTR_ERR(urb);
2263
2264                 hdev->stat.acl_tx++;
2265                 return submit_or_queue_tx_urb(hdev, urb);
2266
2267         case HCI_SCODATA_PKT:
2268                 if (hci_conn_num(hdev, SCO_LINK) < 1)
2269                         return -ENODEV;
2270
2271                 urb = alloc_isoc_urb(hdev, skb);
2272                 if (IS_ERR(urb))
2273                         return PTR_ERR(urb);
2274
2275                 hdev->stat.sco_tx++;
2276                 return submit_tx_urb(hdev, urb);
2277         }
2278
2279         return -EILSEQ;
2280 }
2281
2282 static int btusb_intel_secure_send(struct hci_dev *hdev, u8 fragment_type,
2283                                    u32 plen, const void *param)
2284 {
2285         while (plen > 0) {
2286                 struct sk_buff *skb;
2287                 u8 cmd_param[253], fragment_len = (plen > 252) ? 252 : plen;
2288
2289                 cmd_param[0] = fragment_type;
2290                 memcpy(cmd_param + 1, param, fragment_len);
2291
2292                 skb = __hci_cmd_sync(hdev, 0xfc09, fragment_len + 1,
2293                                      cmd_param, HCI_INIT_TIMEOUT);
2294                 if (IS_ERR(skb))
2295                         return PTR_ERR(skb);
2296
2297                 kfree_skb(skb);
2298
2299                 plen -= fragment_len;
2300                 param += fragment_len;
2301         }
2302
2303         return 0;
2304 }
2305
2306 static void btusb_intel_version_info(struct hci_dev *hdev,
2307                                      struct intel_version *ver)
2308 {
2309         const char *variant;
2310
2311         switch (ver->fw_variant) {
2312         case 0x06:
2313                 variant = "Bootloader";
2314                 break;
2315         case 0x23:
2316                 variant = "Firmware";
2317                 break;
2318         default:
2319                 return;
2320         }
2321
2322         BT_INFO("%s: %s revision %u.%u build %u week %u %u", hdev->name,
2323                 variant, ver->fw_revision >> 4, ver->fw_revision & 0x0f,
2324                 ver->fw_build_num, ver->fw_build_ww, 2000 + ver->fw_build_yy);
2325 }
2326
2327 static int btusb_setup_intel_new(struct hci_dev *hdev)
2328 {
2329         static const u8 reset_param[] = { 0x00, 0x01, 0x00, 0x01,
2330                                           0x00, 0x08, 0x04, 0x00 };
2331         struct btusb_data *data = hci_get_drvdata(hdev);
2332         struct sk_buff *skb;
2333         struct intel_version *ver;
2334         struct intel_boot_params *params;
2335         const struct firmware *fw;
2336         const u8 *fw_ptr;
2337         char fwname[64];
2338         ktime_t calltime, delta, rettime;
2339         unsigned long long duration;
2340         int err;
2341
2342         BT_DBG("%s", hdev->name);
2343
2344         calltime = ktime_get();
2345
2346         /* Read the Intel version information to determine if the device
2347          * is in bootloader mode or if it already has operational firmware
2348          * loaded.
2349          */
2350         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
2351         if (IS_ERR(skb)) {
2352                 BT_ERR("%s: Reading Intel version information failed (%ld)",
2353                        hdev->name, PTR_ERR(skb));
2354                 return PTR_ERR(skb);
2355         }
2356
2357         if (skb->len != sizeof(*ver)) {
2358                 BT_ERR("%s: Intel version event size mismatch", hdev->name);
2359                 kfree_skb(skb);
2360                 return -EILSEQ;
2361         }
2362
2363         ver = (struct intel_version *)skb->data;
2364         if (ver->status) {
2365                 BT_ERR("%s: Intel version command failure (%02x)",
2366                        hdev->name, ver->status);
2367                 err = -bt_to_errno(ver->status);
2368                 kfree_skb(skb);
2369                 return err;
2370         }
2371
2372         /* The hardware platform number has a fixed value of 0x37 and
2373          * for now only accept this single value.
2374          */
2375         if (ver->hw_platform != 0x37) {
2376                 BT_ERR("%s: Unsupported Intel hardware platform (%u)",
2377                        hdev->name, ver->hw_platform);
2378                 kfree_skb(skb);
2379                 return -EINVAL;
2380         }
2381
2382         /* At the moment only the hardware variant iBT 3.0 (LnP/SfP) is
2383          * supported by this firmware loading method. This check has been
2384          * put in place to ensure correct forward compatibility options
2385          * when newer hardware variants come along.
2386          */
2387         if (ver->hw_variant != 0x0b) {
2388                 BT_ERR("%s: Unsupported Intel hardware variant (%u)",
2389                        hdev->name, ver->hw_variant);
2390                 kfree_skb(skb);
2391                 return -EINVAL;
2392         }
2393
2394         btusb_intel_version_info(hdev, ver);
2395
2396         /* The firmware variant determines if the device is in bootloader
2397          * mode or is running operational firmware. The value 0x06 identifies
2398          * the bootloader and the value 0x23 identifies the operational
2399          * firmware.
2400          *
2401          * When the operational firmware is already present, then only
2402          * the check for valid Bluetooth device address is needed. This
2403          * determines if the device will be added as configured or
2404          * unconfigured controller.
2405          *
2406          * It is not possible to use the Secure Boot Parameters in this
2407          * case since that command is only available in bootloader mode.
2408          */
2409         if (ver->fw_variant == 0x23) {
2410                 kfree_skb(skb);
2411                 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2412                 btintel_check_bdaddr(hdev);
2413                 return 0;
2414         }
2415
2416         /* If the device is not in bootloader mode, then the only possible
2417          * choice is to return an error and abort the device initialization.
2418          */
2419         if (ver->fw_variant != 0x06) {
2420                 BT_ERR("%s: Unsupported Intel firmware variant (%u)",
2421                        hdev->name, ver->fw_variant);
2422                 kfree_skb(skb);
2423                 return -ENODEV;
2424         }
2425
2426         kfree_skb(skb);
2427
2428         /* Read the secure boot parameters to identify the operating
2429          * details of the bootloader.
2430          */
2431         skb = __hci_cmd_sync(hdev, 0xfc0d, 0, NULL, HCI_INIT_TIMEOUT);
2432         if (IS_ERR(skb)) {
2433                 BT_ERR("%s: Reading Intel boot parameters failed (%ld)",
2434                        hdev->name, PTR_ERR(skb));
2435                 return PTR_ERR(skb);
2436         }
2437
2438         if (skb->len != sizeof(*params)) {
2439                 BT_ERR("%s: Intel boot parameters size mismatch", hdev->name);
2440                 kfree_skb(skb);
2441                 return -EILSEQ;
2442         }
2443
2444         params = (struct intel_boot_params *)skb->data;
2445         if (params->status) {
2446                 BT_ERR("%s: Intel boot parameters command failure (%02x)",
2447                        hdev->name, params->status);
2448                 err = -bt_to_errno(params->status);
2449                 kfree_skb(skb);
2450                 return err;
2451         }
2452
2453         BT_INFO("%s: Device revision is %u", hdev->name,
2454                 le16_to_cpu(params->dev_revid));
2455
2456         BT_INFO("%s: Secure boot is %s", hdev->name,
2457                 params->secure_boot ? "enabled" : "disabled");
2458
2459         BT_INFO("%s: Minimum firmware build %u week %u %u", hdev->name,
2460                 params->min_fw_build_nn, params->min_fw_build_cw,
2461                 2000 + params->min_fw_build_yy);
2462
2463         /* It is required that every single firmware fragment is acknowledged
2464          * with a command complete event. If the boot parameters indicate
2465          * that this bootloader does not send them, then abort the setup.
2466          */
2467         if (params->limited_cce != 0x00) {
2468                 BT_ERR("%s: Unsupported Intel firmware loading method (%u)",
2469                        hdev->name, params->limited_cce);
2470                 kfree_skb(skb);
2471                 return -EINVAL;
2472         }
2473
2474         /* If the OTP has no valid Bluetooth device address, then there will
2475          * also be no valid address for the operational firmware.
2476          */
2477         if (!bacmp(&params->otp_bdaddr, BDADDR_ANY)) {
2478                 BT_INFO("%s: No device address configured", hdev->name);
2479                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2480         }
2481
2482         /* With this Intel bootloader only the hardware variant and device
2483          * revision information are used to select the right firmware.
2484          *
2485          * Currently this bootloader support is limited to hardware variant
2486          * iBT 3.0 (LnP/SfP) which is identified by the value 11 (0x0b).
2487          */
2488         snprintf(fwname, sizeof(fwname), "intel/ibt-11-%u.sfi",
2489                  le16_to_cpu(params->dev_revid));
2490
2491         err = request_firmware(&fw, fwname, &hdev->dev);
2492         if (err < 0) {
2493                 BT_ERR("%s: Failed to load Intel firmware file (%d)",
2494                        hdev->name, err);
2495                 kfree_skb(skb);
2496                 return err;
2497         }
2498
2499         BT_INFO("%s: Found device firmware: %s", hdev->name, fwname);
2500
2501         kfree_skb(skb);
2502
2503         if (fw->size < 644) {
2504                 BT_ERR("%s: Invalid size of firmware file (%zu)",
2505                        hdev->name, fw->size);
2506                 err = -EBADF;
2507                 goto done;
2508         }
2509
2510         set_bit(BTUSB_DOWNLOADING, &data->flags);
2511
2512         /* Start the firmware download transaction with the Init fragment
2513          * represented by the 128 bytes of CSS header.
2514          */
2515         err = btusb_intel_secure_send(hdev, 0x00, 128, fw->data);
2516         if (err < 0) {
2517                 BT_ERR("%s: Failed to send firmware header (%d)",
2518                        hdev->name, err);
2519                 goto done;
2520         }
2521
2522         /* Send the 256 bytes of public key information from the firmware
2523          * as the PKey fragment.
2524          */
2525         err = btusb_intel_secure_send(hdev, 0x03, 256, fw->data + 128);
2526         if (err < 0) {
2527                 BT_ERR("%s: Failed to send firmware public key (%d)",
2528                        hdev->name, err);
2529                 goto done;
2530         }
2531
2532         /* Send the 256 bytes of signature information from the firmware
2533          * as the Sign fragment.
2534          */
2535         err = btusb_intel_secure_send(hdev, 0x02, 256, fw->data + 388);
2536         if (err < 0) {
2537                 BT_ERR("%s: Failed to send firmware signature (%d)",
2538                        hdev->name, err);
2539                 goto done;
2540         }
2541
2542         fw_ptr = fw->data + 644;
2543
2544         while (fw_ptr - fw->data < fw->size) {
2545                 struct hci_command_hdr *cmd = (void *)fw_ptr;
2546                 u8 cmd_len;
2547
2548                 cmd_len = sizeof(*cmd) + cmd->plen;
2549
2550                 /* Send each command from the firmware data buffer as
2551                  * a single Data fragment.
2552                  */
2553                 err = btusb_intel_secure_send(hdev, 0x01, cmd_len, fw_ptr);
2554                 if (err < 0) {
2555                         BT_ERR("%s: Failed to send firmware data (%d)",
2556                                hdev->name, err);
2557                         goto done;
2558                 }
2559
2560                 fw_ptr += cmd_len;
2561         }
2562
2563         set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2564
2565         BT_INFO("%s: Waiting for firmware download to complete", hdev->name);
2566
2567         /* Before switching the device into operational mode and with that
2568          * booting the loaded firmware, wait for the bootloader notification
2569          * that all fragments have been successfully received.
2570          *
2571          * When the event processing receives the notification, then the
2572          * BTUSB_DOWNLOADING flag will be cleared.
2573          *
2574          * The firmware loading should not take longer than 5 seconds
2575          * and thus just timeout if that happens and fail the setup
2576          * of this device.
2577          */
2578         err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
2579                                   TASK_INTERRUPTIBLE,
2580                                   msecs_to_jiffies(5000));
2581         if (err == 1) {
2582                 BT_ERR("%s: Firmware loading interrupted", hdev->name);
2583                 err = -EINTR;
2584                 goto done;
2585         }
2586
2587         if (err) {
2588                 BT_ERR("%s: Firmware loading timeout", hdev->name);
2589                 err = -ETIMEDOUT;
2590                 goto done;
2591         }
2592
2593         if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) {
2594                 BT_ERR("%s: Firmware loading failed", hdev->name);
2595                 err = -ENOEXEC;
2596                 goto done;
2597         }
2598
2599         rettime = ktime_get();
2600         delta = ktime_sub(rettime, calltime);
2601         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2602
2603         BT_INFO("%s: Firmware loaded in %llu usecs", hdev->name, duration);
2604
2605 done:
2606         release_firmware(fw);
2607
2608         if (err < 0)
2609                 return err;
2610
2611         calltime = ktime_get();
2612
2613         set_bit(BTUSB_BOOTING, &data->flags);
2614
2615         skb = __hci_cmd_sync(hdev, 0xfc01, sizeof(reset_param), reset_param,
2616                              HCI_INIT_TIMEOUT);
2617         if (IS_ERR(skb))
2618                 return PTR_ERR(skb);
2619
2620         kfree_skb(skb);
2621
2622         /* The bootloader will not indicate when the device is ready. This
2623          * is done by the operational firmware sending bootup notification.
2624          *
2625          * Booting into operational firmware should not take longer than
2626          * 1 second. However if that happens, then just fail the setup
2627          * since something went wrong.
2628          */
2629         BT_INFO("%s: Waiting for device to boot", hdev->name);
2630
2631         err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING,
2632                                   TASK_INTERRUPTIBLE,
2633                                   msecs_to_jiffies(1000));
2634
2635         if (err == 1) {
2636                 BT_ERR("%s: Device boot interrupted", hdev->name);
2637                 return -EINTR;
2638         }
2639
2640         if (err) {
2641                 BT_ERR("%s: Device boot timeout", hdev->name);
2642                 return -ETIMEDOUT;
2643         }
2644
2645         rettime = ktime_get();
2646         delta = ktime_sub(rettime, calltime);
2647         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2648
2649         BT_INFO("%s: Device booted in %llu usecs", hdev->name, duration);
2650
2651         clear_bit(BTUSB_BOOTLOADER, &data->flags);
2652
2653         return 0;
2654 }
2655
2656 static void btusb_hw_error_intel(struct hci_dev *hdev, u8 code)
2657 {
2658         struct sk_buff *skb;
2659         u8 type = 0x00;
2660
2661         BT_ERR("%s: Hardware error 0x%2.2x", hdev->name, code);
2662
2663         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2664         if (IS_ERR(skb)) {
2665                 BT_ERR("%s: Reset after hardware error failed (%ld)",
2666                        hdev->name, PTR_ERR(skb));
2667                 return;
2668         }
2669         kfree_skb(skb);
2670
2671         skb = __hci_cmd_sync(hdev, 0xfc22, 1, &type, HCI_INIT_TIMEOUT);
2672         if (IS_ERR(skb)) {
2673                 BT_ERR("%s: Retrieving Intel exception info failed (%ld)",
2674                        hdev->name, PTR_ERR(skb));
2675                 return;
2676         }
2677
2678         if (skb->len != 13) {
2679                 BT_ERR("%s: Exception info size mismatch", hdev->name);
2680                 kfree_skb(skb);
2681                 return;
2682         }
2683
2684         if (skb->data[0] != 0x00) {
2685                 BT_ERR("%s: Exception info command failure (%02x)",
2686                        hdev->name, skb->data[0]);
2687                 kfree_skb(skb);
2688                 return;
2689         }
2690
2691         BT_ERR("%s: Exception info %s", hdev->name, (char *)(skb->data + 1));
2692
2693         kfree_skb(skb);
2694 }
2695
2696 static int btusb_shutdown_intel(struct hci_dev *hdev)
2697 {
2698         struct sk_buff *skb;
2699         long ret;
2700
2701         /* Some platforms have an issue with BT LED when the interface is
2702          * down or BT radio is turned off, which takes 5 seconds to BT LED
2703          * goes off. This command turns off the BT LED immediately.
2704          */
2705         skb = __hci_cmd_sync(hdev, 0xfc3f, 0, NULL, HCI_INIT_TIMEOUT);
2706         if (IS_ERR(skb)) {
2707                 ret = PTR_ERR(skb);
2708                 BT_ERR("%s: turning off Intel device LED failed (%ld)",
2709                        hdev->name, ret);
2710                 return ret;
2711         }
2712         kfree_skb(skb);
2713
2714         return 0;
2715 }
2716
2717 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
2718                                     const bdaddr_t *bdaddr)
2719 {
2720         struct sk_buff *skb;
2721         u8 buf[8];
2722         long ret;
2723
2724         buf[0] = 0xfe;
2725         buf[1] = sizeof(bdaddr_t);
2726         memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
2727
2728         skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2729         if (IS_ERR(skb)) {
2730                 ret = PTR_ERR(skb);
2731                 BT_ERR("%s: changing Marvell device address failed (%ld)",
2732                        hdev->name, ret);
2733                 return ret;
2734         }
2735         kfree_skb(skb);
2736
2737         return 0;
2738 }
2739
2740 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
2741                                     const bdaddr_t *bdaddr)
2742 {
2743         struct sk_buff *skb;
2744         u8 buf[10];
2745         long ret;
2746
2747         buf[0] = 0x01;
2748         buf[1] = 0x01;
2749         buf[2] = 0x00;
2750         buf[3] = sizeof(bdaddr_t);
2751         memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
2752
2753         skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2754         if (IS_ERR(skb)) {
2755                 ret = PTR_ERR(skb);
2756                 BT_ERR("%s: Change address command failed (%ld)",
2757                        hdev->name, ret);
2758                 return ret;
2759         }
2760         kfree_skb(skb);
2761
2762         return 0;
2763 }
2764
2765 #define QCA_DFU_PACKET_LEN      4096
2766
2767 #define QCA_GET_TARGET_VERSION  0x09
2768 #define QCA_CHECK_STATUS        0x05
2769 #define QCA_DFU_DOWNLOAD        0x01
2770
2771 #define QCA_SYSCFG_UPDATED      0x40
2772 #define QCA_PATCH_UPDATED       0x80
2773 #define QCA_DFU_TIMEOUT         3000
2774
2775 struct qca_version {
2776         __le32  rom_version;
2777         __le32  patch_version;
2778         __le32  ram_version;
2779         __le32  ref_clock;
2780         __u8    reserved[4];
2781 } __packed;
2782
2783 struct qca_rampatch_version {
2784         __le16  rom_version;
2785         __le16  patch_version;
2786 } __packed;
2787
2788 struct qca_device_info {
2789         u32     rom_version;
2790         u8      rampatch_hdr;   /* length of header in rampatch */
2791         u8      nvm_hdr;        /* length of header in NVM */
2792         u8      ver_offset;     /* offset of version structure in rampatch */
2793 };
2794
2795 static const struct qca_device_info qca_devices_table[] = {
2796         { 0x00000100, 20, 4, 10 }, /* Rome 1.0 */
2797         { 0x00000101, 20, 4, 10 }, /* Rome 1.1 */
2798         { 0x00000201, 28, 4, 18 }, /* Rome 2.1 */
2799         { 0x00000300, 28, 4, 18 }, /* Rome 3.0 */
2800         { 0x00000302, 28, 4, 18 }, /* Rome 3.2 */
2801 };
2802
2803 static int btusb_qca_send_vendor_req(struct hci_dev *hdev, u8 request,
2804                                      void *data, u16 size)
2805 {
2806         struct btusb_data *btdata = hci_get_drvdata(hdev);
2807         struct usb_device *udev = btdata->udev;
2808         int pipe, err;
2809         u8 *buf;
2810
2811         buf = kmalloc(size, GFP_KERNEL);
2812         if (!buf)
2813                 return -ENOMEM;
2814
2815         /* Found some of USB hosts have IOT issues with ours so that we should
2816          * not wait until HCI layer is ready.
2817          */
2818         pipe = usb_rcvctrlpipe(udev, 0);
2819         err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
2820                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2821         if (err < 0) {
2822                 BT_ERR("%s: Failed to access otp area (%d)", hdev->name, err);
2823                 goto done;
2824         }
2825
2826         memcpy(data, buf, size);
2827
2828 done:
2829         kfree(buf);
2830
2831         return err;
2832 }
2833
2834 static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
2835                                        const struct firmware *firmware,
2836                                        size_t hdr_size)
2837 {
2838         struct btusb_data *btdata = hci_get_drvdata(hdev);
2839         struct usb_device *udev = btdata->udev;
2840         size_t count, size, sent = 0;
2841         int pipe, len, err;
2842         u8 *buf;
2843
2844         buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
2845         if (!buf)
2846                 return -ENOMEM;
2847
2848         count = firmware->size;
2849
2850         size = min_t(size_t, count, hdr_size);
2851         memcpy(buf, firmware->data, size);
2852
2853         /* USB patches should go down to controller through USB path
2854          * because binary format fits to go down through USB channel.
2855          * USB control path is for patching headers and USB bulk is for
2856          * patch body.
2857          */
2858         pipe = usb_sndctrlpipe(udev, 0);
2859         err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
2860                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2861         if (err < 0) {
2862                 BT_ERR("%s: Failed to send headers (%d)", hdev->name, err);
2863                 goto done;
2864         }
2865
2866         sent += size;
2867         count -= size;
2868
2869         while (count) {
2870                 size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
2871
2872                 memcpy(buf, firmware->data + sent, size);
2873
2874                 pipe = usb_sndbulkpipe(udev, 0x02);
2875                 err = usb_bulk_msg(udev, pipe, buf, size, &len,
2876                                    QCA_DFU_TIMEOUT);
2877                 if (err < 0) {
2878                         BT_ERR("%s: Failed to send body at %zd of %zd (%d)",
2879                                hdev->name, sent, firmware->size, err);
2880                         break;
2881                 }
2882
2883                 if (size != len) {
2884                         BT_ERR("%s: Failed to get bulk buffer", hdev->name);
2885                         err = -EILSEQ;
2886                         break;
2887                 }
2888
2889                 sent  += size;
2890                 count -= size;
2891         }
2892
2893 done:
2894         kfree(buf);
2895         return err;
2896 }
2897
2898 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
2899                                          struct qca_version *ver,
2900                                          const struct qca_device_info *info)
2901 {
2902         struct qca_rampatch_version *rver;
2903         const struct firmware *fw;
2904         u32 ver_rom, ver_patch;
2905         u16 rver_rom, rver_patch;
2906         char fwname[64];
2907         int err;
2908
2909         ver_rom = le32_to_cpu(ver->rom_version);
2910         ver_patch = le32_to_cpu(ver->patch_version);
2911
2912         snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom);
2913
2914         err = request_firmware(&fw, fwname, &hdev->dev);
2915         if (err) {
2916                 BT_ERR("%s: failed to request rampatch file: %s (%d)",
2917                        hdev->name, fwname, err);
2918                 return err;
2919         }
2920
2921         BT_INFO("%s: using rampatch file: %s", hdev->name, fwname);
2922
2923         rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
2924         rver_rom = le16_to_cpu(rver->rom_version);
2925         rver_patch = le16_to_cpu(rver->patch_version);
2926
2927         BT_INFO("%s: QCA: patch rome 0x%x build 0x%x, firmware rome 0x%x "
2928                 "build 0x%x", hdev->name, rver_rom, rver_patch, ver_rom,
2929                 ver_patch);
2930
2931         if (rver_rom != ver_rom || rver_patch <= ver_patch) {
2932                 BT_ERR("%s: rampatch file version did not match with firmware",
2933                        hdev->name);
2934                 err = -EINVAL;
2935                 goto done;
2936         }
2937
2938         err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
2939
2940 done:
2941         release_firmware(fw);
2942
2943         return err;
2944 }
2945
2946 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
2947                                     struct qca_version *ver,
2948                                     const struct qca_device_info *info)
2949 {
2950         const struct firmware *fw;
2951         char fwname[64];
2952         int err;
2953
2954         snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x.bin",
2955                  le32_to_cpu(ver->rom_version));
2956
2957         err = request_firmware(&fw, fwname, &hdev->dev);
2958         if (err) {
2959                 BT_ERR("%s: failed to request NVM file: %s (%d)",
2960                        hdev->name, fwname, err);
2961                 return err;
2962         }
2963
2964         BT_INFO("%s: using NVM file: %s", hdev->name, fwname);
2965
2966         err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
2967
2968         release_firmware(fw);
2969
2970         return err;
2971 }
2972
2973 static int btusb_setup_qca(struct hci_dev *hdev)
2974 {
2975         const struct qca_device_info *info = NULL;
2976         struct qca_version ver;
2977         u32 ver_rom;
2978         u8 status;
2979         int i, err;
2980
2981         err = btusb_qca_send_vendor_req(hdev, QCA_GET_TARGET_VERSION, &ver,
2982                                         sizeof(ver));
2983         if (err < 0)
2984                 return err;
2985
2986         ver_rom = le32_to_cpu(ver.rom_version);
2987         for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
2988                 if (ver_rom == qca_devices_table[i].rom_version)
2989                         info = &qca_devices_table[i];
2990         }
2991         if (!info) {
2992                 BT_ERR("%s: don't support firmware rome 0x%x", hdev->name,
2993                        ver_rom);
2994                 return -ENODEV;
2995         }
2996
2997         err = btusb_qca_send_vendor_req(hdev, QCA_CHECK_STATUS, &status,
2998                                         sizeof(status));
2999         if (err < 0)
3000                 return err;
3001
3002         if (!(status & QCA_PATCH_UPDATED)) {
3003                 err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
3004                 if (err < 0)
3005                         return err;
3006         }
3007
3008         if (!(status & QCA_SYSCFG_UPDATED)) {
3009                 err = btusb_setup_qca_load_nvm(hdev, &ver, info);
3010                 if (err < 0)
3011                         return err;
3012         }
3013
3014         return 0;
3015 }
3016
3017 static int btusb_probe(struct usb_interface *intf,
3018                        const struct usb_device_id *id)
3019 {
3020         struct usb_endpoint_descriptor *ep_desc;
3021         struct btusb_data *data;
3022         struct hci_dev *hdev;
3023         int i, err;
3024
3025         BT_DBG("intf %p id %p", intf, id);
3026
3027         /* interface numbers are hardcoded in the spec */
3028         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
3029                 return -ENODEV;
3030
3031         if (!id->driver_info) {
3032                 const struct usb_device_id *match;
3033
3034                 match = usb_match_id(intf, blacklist_table);
3035                 if (match)
3036                         id = match;
3037         }
3038
3039         if (id->driver_info == BTUSB_IGNORE)
3040                 return -ENODEV;
3041
3042         if (id->driver_info & BTUSB_ATH3012) {
3043                 struct usb_device *udev = interface_to_usbdev(intf);
3044
3045                 /* Old firmware would otherwise let ath3k driver load
3046                  * patch and sysconfig files */
3047                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
3048                         return -ENODEV;
3049         }
3050
3051         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
3052         if (!data)
3053                 return -ENOMEM;
3054
3055         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
3056                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
3057
3058                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
3059                         data->intr_ep = ep_desc;
3060                         continue;
3061                 }
3062
3063                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
3064                         data->bulk_tx_ep = ep_desc;
3065                         continue;
3066                 }
3067
3068                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
3069                         data->bulk_rx_ep = ep_desc;
3070                         continue;
3071                 }
3072         }
3073
3074         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
3075                 return -ENODEV;
3076
3077         if (id->driver_info & BTUSB_AMP) {
3078                 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
3079                 data->cmdreq = 0x2b;
3080         } else {
3081                 data->cmdreq_type = USB_TYPE_CLASS;
3082                 data->cmdreq = 0x00;
3083         }
3084
3085         data->udev = interface_to_usbdev(intf);
3086         data->intf = intf;
3087
3088         INIT_WORK(&data->work, btusb_work);
3089         INIT_WORK(&data->waker, btusb_waker);
3090         init_usb_anchor(&data->deferred);
3091         init_usb_anchor(&data->tx_anchor);
3092         spin_lock_init(&data->txlock);
3093
3094         init_usb_anchor(&data->intr_anchor);
3095         init_usb_anchor(&data->bulk_anchor);
3096         init_usb_anchor(&data->isoc_anchor);
3097         spin_lock_init(&data->rxlock);
3098
3099         if (id->driver_info & BTUSB_INTEL_NEW) {
3100                 data->recv_event = btusb_recv_event_intel;
3101                 data->recv_bulk = btusb_recv_bulk_intel;
3102                 set_bit(BTUSB_BOOTLOADER, &data->flags);
3103         } else {
3104                 data->recv_event = hci_recv_frame;
3105                 data->recv_bulk = btusb_recv_bulk;
3106         }
3107
3108         hdev = hci_alloc_dev();
3109         if (!hdev)
3110                 return -ENOMEM;
3111
3112         hdev->bus = HCI_USB;
3113         hci_set_drvdata(hdev, data);
3114
3115         if (id->driver_info & BTUSB_AMP)
3116                 hdev->dev_type = HCI_AMP;
3117         else
3118                 hdev->dev_type = HCI_BREDR;
3119
3120         data->hdev = hdev;
3121
3122         SET_HCIDEV_DEV(hdev, &intf->dev);
3123
3124         hdev->open   = btusb_open;
3125         hdev->close  = btusb_close;
3126         hdev->flush  = btusb_flush;
3127         hdev->send   = btusb_send_frame;
3128         hdev->notify = btusb_notify;
3129
3130         if (id->driver_info & BTUSB_BCM92035)
3131                 hdev->setup = btusb_setup_bcm92035;
3132
3133 #ifdef CONFIG_BT_HCIBTUSB_BCM
3134         if (id->driver_info & BTUSB_BCM_PATCHRAM) {
3135                 hdev->setup = btbcm_setup_patchram;
3136                 hdev->set_bdaddr = btbcm_set_bdaddr;
3137         }
3138
3139         if (id->driver_info & BTUSB_BCM_APPLE)
3140                 hdev->setup = btbcm_setup_apple;
3141 #endif
3142
3143         if (id->driver_info & BTUSB_INTEL) {
3144                 hdev->setup = btusb_setup_intel;
3145                 hdev->shutdown = btusb_shutdown_intel;
3146                 hdev->set_bdaddr = btintel_set_bdaddr;
3147                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3148                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3149         }
3150
3151         if (id->driver_info & BTUSB_INTEL_NEW) {
3152                 hdev->send = btusb_send_frame_intel;
3153                 hdev->setup = btusb_setup_intel_new;
3154                 hdev->hw_error = btusb_hw_error_intel;
3155                 hdev->set_bdaddr = btintel_set_bdaddr;
3156                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3157         }
3158
3159         if (id->driver_info & BTUSB_MARVELL)
3160                 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
3161
3162         if (id->driver_info & BTUSB_SWAVE) {
3163                 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
3164                 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
3165         }
3166
3167         if (id->driver_info & BTUSB_INTEL_BOOT)
3168                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3169
3170         if (id->driver_info & BTUSB_ATH3012) {
3171                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
3172                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3173                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3174         }
3175
3176         if (id->driver_info & BTUSB_QCA_ROME) {
3177                 data->setup_on_usb = btusb_setup_qca;
3178                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
3179         }
3180
3181         if (id->driver_info & BTUSB_REALTEK)
3182                 hdev->setup = btusb_setup_realtek;
3183
3184         if (id->driver_info & BTUSB_AMP) {
3185                 /* AMP controllers do not support SCO packets */
3186                 data->isoc = NULL;
3187         } else {
3188                 /* Interface numbers are hardcoded in the specification */
3189                 data->isoc = usb_ifnum_to_if(data->udev, 1);
3190         }
3191
3192         if (!reset)
3193                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3194
3195         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
3196                 if (!disable_scofix)
3197                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
3198         }
3199
3200         if (id->driver_info & BTUSB_BROKEN_ISOC)
3201                 data->isoc = NULL;
3202
3203         if (id->driver_info & BTUSB_DIGIANSWER) {
3204                 data->cmdreq_type = USB_TYPE_VENDOR;
3205                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3206         }
3207
3208         if (id->driver_info & BTUSB_CSR) {
3209                 struct usb_device *udev = data->udev;
3210                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
3211
3212                 /* Old firmware would otherwise execute USB reset */
3213                 if (bcdDevice < 0x117)
3214                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3215
3216                 /* Fake CSR devices with broken commands */
3217                 if (bcdDevice <= 0x100)
3218                         hdev->setup = btusb_setup_csr;
3219
3220                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3221         }
3222
3223         if (id->driver_info & BTUSB_SNIFFER) {
3224                 struct usb_device *udev = data->udev;
3225
3226                 /* New sniffer firmware has crippled HCI interface */
3227                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
3228                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3229         }
3230
3231         if (id->driver_info & BTUSB_INTEL_BOOT) {
3232                 /* A bug in the bootloader causes that interrupt interface is
3233                  * only enabled after receiving SetInterface(0, AltSetting=0).
3234                  */
3235                 err = usb_set_interface(data->udev, 0, 0);
3236                 if (err < 0) {
3237                         BT_ERR("failed to set interface 0, alt 0 %d", err);
3238                         hci_free_dev(hdev);
3239                         return err;
3240                 }
3241         }
3242
3243         if (data->isoc) {
3244                 err = usb_driver_claim_interface(&btusb_driver,
3245                                                  data->isoc, data);
3246                 if (err < 0) {
3247                         hci_free_dev(hdev);
3248                         return err;
3249                 }
3250         }
3251
3252         err = hci_register_dev(hdev);
3253         if (err < 0) {
3254                 hci_free_dev(hdev);
3255                 return err;
3256         }
3257
3258         usb_set_intfdata(intf, data);
3259
3260         return 0;
3261 }
3262
3263 static void btusb_disconnect(struct usb_interface *intf)
3264 {
3265         struct btusb_data *data = usb_get_intfdata(intf);
3266         struct hci_dev *hdev;
3267
3268         BT_DBG("intf %p", intf);
3269
3270         if (!data)
3271                 return;
3272
3273         hdev = data->hdev;
3274         usb_set_intfdata(data->intf, NULL);
3275
3276         if (data->isoc)
3277                 usb_set_intfdata(data->isoc, NULL);
3278
3279         hci_unregister_dev(hdev);
3280
3281         if (intf == data->isoc)
3282                 usb_driver_release_interface(&btusb_driver, data->intf);
3283         else if (data->isoc)
3284                 usb_driver_release_interface(&btusb_driver, data->isoc);
3285
3286         hci_free_dev(hdev);
3287 }
3288
3289 #ifdef CONFIG_PM
3290 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
3291 {
3292         struct btusb_data *data = usb_get_intfdata(intf);
3293
3294         BT_DBG("intf %p", intf);
3295
3296         if (data->suspend_count++)
3297                 return 0;
3298
3299         spin_lock_irq(&data->txlock);
3300         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
3301                 set_bit(BTUSB_SUSPENDING, &data->flags);
3302                 spin_unlock_irq(&data->txlock);
3303         } else {
3304                 spin_unlock_irq(&data->txlock);
3305                 data->suspend_count--;
3306                 return -EBUSY;
3307         }
3308
3309         cancel_work_sync(&data->work);
3310
3311         btusb_stop_traffic(data);
3312         usb_kill_anchored_urbs(&data->tx_anchor);
3313
3314         return 0;
3315 }
3316
3317 static void play_deferred(struct btusb_data *data)
3318 {
3319         struct urb *urb;
3320         int err;
3321
3322         while ((urb = usb_get_from_anchor(&data->deferred))) {
3323                 err = usb_submit_urb(urb, GFP_ATOMIC);
3324                 if (err < 0)
3325                         break;
3326
3327                 data->tx_in_flight++;
3328         }
3329         usb_scuttle_anchored_urbs(&data->deferred);
3330 }
3331
3332 static int btusb_resume(struct usb_interface *intf)
3333 {
3334         struct btusb_data *data = usb_get_intfdata(intf);
3335         struct hci_dev *hdev = data->hdev;
3336         int err = 0;
3337
3338         BT_DBG("intf %p", intf);
3339
3340         if (--data->suspend_count)
3341                 return 0;
3342
3343         if (!test_bit(HCI_RUNNING, &hdev->flags))
3344                 goto done;
3345
3346         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
3347                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
3348                 if (err < 0) {
3349                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
3350                         goto failed;
3351                 }
3352         }
3353
3354         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
3355                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
3356                 if (err < 0) {
3357                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
3358                         goto failed;
3359                 }
3360
3361                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
3362         }
3363
3364         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
3365                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
3366                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
3367                 else
3368                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
3369         }
3370
3371         spin_lock_irq(&data->txlock);
3372         play_deferred(data);
3373         clear_bit(BTUSB_SUSPENDING, &data->flags);
3374         spin_unlock_irq(&data->txlock);
3375         schedule_work(&data->work);
3376
3377         return 0;
3378
3379 failed:
3380         usb_scuttle_anchored_urbs(&data->deferred);
3381 done:
3382         spin_lock_irq(&data->txlock);
3383         clear_bit(BTUSB_SUSPENDING, &data->flags);
3384         spin_unlock_irq(&data->txlock);
3385
3386         return err;
3387 }
3388 #endif
3389
3390 static struct usb_driver btusb_driver = {
3391         .name           = "btusb",
3392         .probe          = btusb_probe,
3393         .disconnect     = btusb_disconnect,
3394 #ifdef CONFIG_PM
3395         .suspend        = btusb_suspend,
3396         .resume         = btusb_resume,
3397 #endif
3398         .id_table       = btusb_table,
3399         .supports_autosuspend = 1,
3400         .disable_hub_initiated_lpm = 1,
3401 };
3402
3403 module_usb_driver(btusb_driver);
3404
3405 module_param(disable_scofix, bool, 0644);
3406 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
3407
3408 module_param(force_scofix, bool, 0644);
3409 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
3410
3411 module_param(reset, bool, 0644);
3412 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
3413
3414 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
3415 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
3416 MODULE_VERSION(VERSION);
3417 MODULE_LICENSE("GPL");