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