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