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 #define VERSION "0.7"
  32
  33 static bool disable_scofix;
  34 static bool force_scofix;
  35
  36 static bool reset = 1;
  37
  38 static struct usb_driver btusb_driver;
  39
  40 #define BTUSB_IGNORE            0x01
  41 #define BTUSB_DIGIANSWER        0x02
  42 #define BTUSB_CSR               0x04
  43 #define BTUSB_SNIFFER           0x08
  44 #define BTUSB_BCM92035          0x10
  45 #define BTUSB_BROKEN_ISOC       0x20
  46 #define BTUSB_WRONG_SCO_MTU     0x40
  47 #define BTUSB_ATH3012           0x80
  48 #define BTUSB_INTEL             0x100
  49 #define BTUSB_INTEL_BOOT        0x200
  50 #define BTUSB_BCM_PATCHRAM      0x400
  51 #define BTUSB_MARVELL           0x800
  52 #define BTUSB_SWAVE             0x1000
  53 #define BTUSB_INTEL_NEW         0x2000
  54 #define BTUSB_AMP               0x4000
  55
  56 static const struct usb_device_id btusb_table[] = {
  57         /* Generic Bluetooth USB device */
  58         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  59
  60         /* Generic Bluetooth AMP device */
  61         { USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP },
  62
  63         /* Apple-specific (Broadcom) devices */
  64         { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01) },
  65
  66         /* MediaTek MT76x0E */
  67         { USB_DEVICE(0x0e8d, 0x763f) },
  68
  69         /* Broadcom SoftSailing reporting vendor specific */
  70         { USB_DEVICE(0x0a5c, 0x21e1) },
  71
  72         /* Apple MacBookPro 7,1 */
  73         { USB_DEVICE(0x05ac, 0x8213) },
  74
  75         /* Apple iMac11,1 */
  76         { USB_DEVICE(0x05ac, 0x8215) },
  77
  78         /* Apple MacBookPro6,2 */
  79         { USB_DEVICE(0x05ac, 0x8218) },
  80
  81         /* Apple MacBookAir3,1, MacBookAir3,2 */
  82         { USB_DEVICE(0x05ac, 0x821b) },
  83
  84         /* Apple MacBookAir4,1 */
  85         { USB_DEVICE(0x05ac, 0x821f) },
  86
  87         /* Apple MacBookPro8,2 */
  88         { USB_DEVICE(0x05ac, 0x821a) },
  89
  90         /* Apple MacMini5,1 */
  91         { USB_DEVICE(0x05ac, 0x8281) },
  92
  93         /* AVM BlueFRITZ! USB v2.0 */
  94         { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE },
  95
  96         /* Bluetooth Ultraport Module from IBM */
  97         { USB_DEVICE(0x04bf, 0x030a) },
  98
  99         /* ALPS Modules with non-standard id */
 100         { USB_DEVICE(0x044e, 0x3001) },
 101         { USB_DEVICE(0x044e, 0x3002) },
 102
 103         /* Ericsson with non-standard id */
 104         { USB_DEVICE(0x0bdb, 0x1002) },
 105
 106         /* Canyon CN-BTU1 with HID interfaces */
 107         { USB_DEVICE(0x0c10, 0x0000) },
 108
 109         /* Broadcom BCM20702A0 */
 110         { USB_DEVICE(0x0489, 0xe042) },
 111         { USB_DEVICE(0x04ca, 0x2003) },
 112         { USB_DEVICE(0x0b05, 0x17b5) },
 113         { USB_DEVICE(0x0b05, 0x17cb) },
 114         { USB_DEVICE(0x413c, 0x8197) },
 115         { USB_DEVICE(0x13d3, 0x3404),
 116           .driver_info = BTUSB_BCM_PATCHRAM },
 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
 140         /* IMC Networks - Broadcom based */
 141         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01) },
 142
 143         /* Intel Bluetooth USB Bootloader (RAM module) */
 144         { USB_DEVICE(0x8087, 0x0a5a),
 145           .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
 146
 147         { }     /* Terminating entry */
 148 };
 149
 150 MODULE_DEVICE_TABLE(usb, btusb_table);
 151
 152 static const struct usb_device_id blacklist_table[] = {
 153         /* CSR BlueCore devices */
 154         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 155
 156         /* Broadcom BCM2033 without firmware */
 157         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 158
 159         /* Atheros 3011 with sflash firmware */
 160         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 161         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 162         { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE },
 163         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 164         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 165         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 166         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 167
 168         /* Atheros AR9285 Malbec with sflash firmware */
 169         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 170
 171         /* Atheros 3012 with sflash firmware */
 172         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 173         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 174         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 175         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 176         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 177         { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
 178         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 179         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 180         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 181         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 182         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 183         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 184         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 185         { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
 186         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 187         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 188         { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
 189         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 190         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 191         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 192         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 193         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 194         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
 195         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 196         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 197         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 198         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 199         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 200         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 201         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 202         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 203         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 204         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 205         { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
 206         { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
 207         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
 208
 209         /* Atheros AR5BBU12 with sflash firmware */
 210         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 211
 212         /* Atheros AR5BBU12 with sflash firmware */
 213         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 214         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 215
 216         /* Broadcom BCM2035 */
 217         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 218         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 219         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 220
 221         /* Broadcom BCM2045 */
 222         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 223         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 224
 225         /* IBM/Lenovo ThinkPad with Broadcom chip */
 226         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 227         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 228
 229         /* HP laptop with Broadcom chip */
 230         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 231
 232         /* Dell laptop with Broadcom chip */
 233         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 234
 235         /* Dell Wireless 370 and 410 devices */
 236         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 237         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 238
 239         /* Belkin F8T012 and F8T013 devices */
 240         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 241         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 242
 243         /* Asus WL-BTD202 device */
 244         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 245
 246         /* Kensington Bluetooth USB adapter */
 247         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 248
 249         /* RTX Telecom based adapters with buggy SCO support */
 250         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 251         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 252
 253         /* CONWISE Technology based adapters with buggy SCO support */
 254         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 255
 256         /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
 257         { USB_DEVICE(0x1300, 0x0001), .driver_info = BTUSB_SWAVE },
 258
 259         /* Digianswer devices */
 260         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 261         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 262
 263         /* CSR BlueCore Bluetooth Sniffer */
 264         { USB_DEVICE(0x0a12, 0x0002),
 265           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 266
 267         /* Frontline ComProbe Bluetooth Sniffer */
 268         { USB_DEVICE(0x16d3, 0x0002),
 269           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 270
 271         /* Marvell Bluetooth devices */
 272         { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
 273         { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
 274
 275         /* Intel Bluetooth devices */
 276         { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR },
 277         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 278         { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
 279         { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_NEW },
 280
 281         /* Other Intel Bluetooth devices */
 282         { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01),
 283           .driver_info = BTUSB_IGNORE },
 284
 285         { }     /* Terminating entry */
 286 };
 287
 288 #define BTUSB_MAX_ISOC_FRAMES   10
 289
 290 #define BTUSB_INTR_RUNNING      0
 291 #define BTUSB_BULK_RUNNING      1
 292 #define BTUSB_ISOC_RUNNING      2
 293 #define BTUSB_SUSPENDING        3
 294 #define BTUSB_DID_ISO_RESUME    4
 295 #define BTUSB_BOOTLOADER        5
 296 #define BTUSB_DOWNLOADING       6
 297 #define BTUSB_FIRMWARE_LOADED   7
 298 #define BTUSB_FIRMWARE_FAILED   8
 299 #define BTUSB_BOOTING           9
 300
 301 struct btusb_data {
 302         struct hci_dev       *hdev;
 303         struct usb_device    *udev;
 304         struct usb_interface *intf;
 305         struct usb_interface *isoc;
 306
 307         unsigned long flags;
 308
 309         struct work_struct work;
 310         struct work_struct waker;
 311
 312         struct usb_anchor deferred;
 313         struct usb_anchor tx_anchor;
 314         int tx_in_flight;
 315         spinlock_t txlock;
 316
 317         struct usb_anchor intr_anchor;
 318         struct usb_anchor bulk_anchor;
 319         struct usb_anchor isoc_anchor;
 320         spinlock_t rxlock;
 321
 322         struct sk_buff *evt_skb;
 323         struct sk_buff *acl_skb;
 324         struct sk_buff *sco_skb;
 325
 326         struct usb_endpoint_descriptor *intr_ep;
 327         struct usb_endpoint_descriptor *bulk_tx_ep;
 328         struct usb_endpoint_descriptor *bulk_rx_ep;
 329         struct usb_endpoint_descriptor *isoc_tx_ep;
 330         struct usb_endpoint_descriptor *isoc_rx_ep;
 331
 332         __u8 cmdreq_type;
 333         __u8 cmdreq;
 334
 335         unsigned int sco_num;
 336         int isoc_altsetting;
 337         int suspend_count;
 338
 339         int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
 340         int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
 341 };
 342
 343 static inline void btusb_free_frags(struct btusb_data *data)
 344 {
 345         unsigned long flags;
 346
 347         spin_lock_irqsave(&data->rxlock, flags);
 348
 349         kfree_skb(data->evt_skb);
 350         data->evt_skb = NULL;
 351
 352         kfree_skb(data->acl_skb);
 353         data->acl_skb = NULL;
 354
 355         kfree_skb(data->sco_skb);
 356         data->sco_skb = NULL;
 357
 358         spin_unlock_irqrestore(&data->rxlock, flags);
 359 }
 360
 361 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
 362 {
 363         struct sk_buff *skb;
 364         int err = 0;
 365
 366         spin_lock(&data->rxlock);
 367         skb = data->evt_skb;
 368
 369         while (count) {
 370                 int len;
 371
 372                 if (!skb) {
 373                         skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
 374                         if (!skb) {
 375                                 err = -ENOMEM;
 376                                 break;
 377                         }
 378
 379                         bt_cb(skb)->pkt_type = HCI_EVENT_PKT;
 380                         bt_cb(skb)->expect = HCI_EVENT_HDR_SIZE;
 381                 }
 382
 383                 len = min_t(uint, bt_cb(skb)->expect, count);
 384                 memcpy(skb_put(skb, len), buffer, len);
 385
 386                 count -= len;
 387                 buffer += len;
 388                 bt_cb(skb)->expect -= len;
 389
 390                 if (skb->len == HCI_EVENT_HDR_SIZE) {
 391                         /* Complete event header */
 392                         bt_cb(skb)->expect = hci_event_hdr(skb)->plen;
 393
 394                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 395                                 kfree_skb(skb);
 396                                 skb = NULL;
 397
 398                                 err = -EILSEQ;
 399                                 break;
 400                         }
 401                 }
 402
 403                 if (bt_cb(skb)->expect == 0) {
 404                         /* Complete frame */
 405                         data->recv_event(data->hdev, skb);
 406                         skb = NULL;
 407                 }
 408         }
 409
 410         data->evt_skb = skb;
 411         spin_unlock(&data->rxlock);
 412
 413         return err;
 414 }
 415
 416 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
 417 {
 418         struct sk_buff *skb;
 419         int err = 0;
 420
 421         spin_lock(&data->rxlock);
 422         skb = data->acl_skb;
 423
 424         while (count) {
 425                 int len;
 426
 427                 if (!skb) {
 428                         skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
 429                         if (!skb) {
 430                                 err = -ENOMEM;
 431                                 break;
 432                         }
 433
 434                         bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT;
 435                         bt_cb(skb)->expect = HCI_ACL_HDR_SIZE;
 436                 }
 437
 438                 len = min_t(uint, bt_cb(skb)->expect, count);
 439                 memcpy(skb_put(skb, len), buffer, len);
 440
 441                 count -= len;
 442                 buffer += len;
 443                 bt_cb(skb)->expect -= len;
 444
 445                 if (skb->len == HCI_ACL_HDR_SIZE) {
 446                         __le16 dlen = hci_acl_hdr(skb)->dlen;
 447
 448                         /* Complete ACL header */
 449                         bt_cb(skb)->expect = __le16_to_cpu(dlen);
 450
 451                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 452                                 kfree_skb(skb);
 453                                 skb = NULL;
 454
 455                                 err = -EILSEQ;
 456                                 break;
 457                         }
 458                 }
 459
 460                 if (bt_cb(skb)->expect == 0) {
 461                         /* Complete frame */
 462                         hci_recv_frame(data->hdev, skb);
 463                         skb = NULL;
 464                 }
 465         }
 466
 467         data->acl_skb = skb;
 468         spin_unlock(&data->rxlock);
 469
 470         return err;
 471 }
 472
 473 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
 474 {
 475         struct sk_buff *skb;
 476         int err = 0;
 477
 478         spin_lock(&data->rxlock);
 479         skb = data->sco_skb;
 480
 481         while (count) {
 482                 int len;
 483
 484                 if (!skb) {
 485                         skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
 486                         if (!skb) {
 487                                 err = -ENOMEM;
 488                                 break;
 489                         }
 490
 491                         bt_cb(skb)->pkt_type = HCI_SCODATA_PKT;
 492                         bt_cb(skb)->expect = HCI_SCO_HDR_SIZE;
 493                 }
 494
 495                 len = min_t(uint, bt_cb(skb)->expect, count);
 496                 memcpy(skb_put(skb, len), buffer, len);
 497
 498                 count -= len;
 499                 buffer += len;
 500                 bt_cb(skb)->expect -= len;
 501
 502                 if (skb->len == HCI_SCO_HDR_SIZE) {
 503                         /* Complete SCO header */
 504                         bt_cb(skb)->expect = hci_sco_hdr(skb)->dlen;
 505
 506                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 507                                 kfree_skb(skb);
 508                                 skb = NULL;
 509
 510                                 err = -EILSEQ;
 511                                 break;
 512                         }
 513                 }
 514
 515                 if (bt_cb(skb)->expect == 0) {
 516                         /* Complete frame */
 517                         hci_recv_frame(data->hdev, skb);
 518                         skb = NULL;
 519                 }
 520         }
 521
 522         data->sco_skb = skb;
 523         spin_unlock(&data->rxlock);
 524
 525         return err;
 526 }
 527
 528 static void btusb_intr_complete(struct urb *urb)
 529 {
 530         struct hci_dev *hdev = urb->context;
 531         struct btusb_data *data = hci_get_drvdata(hdev);
 532         int err;
 533
 534         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 535                urb->actual_length);
 536
 537         if (!test_bit(HCI_RUNNING, &hdev->flags))
 538                 return;
 539
 540         if (urb->status == 0) {
 541                 hdev->stat.byte_rx += urb->actual_length;
 542
 543                 if (btusb_recv_intr(data, urb->transfer_buffer,
 544                                     urb->actual_length) < 0) {
 545                         BT_ERR("%s corrupted event packet", hdev->name);
 546                         hdev->stat.err_rx++;
 547                 }
 548         } else if (urb->status == -ENOENT) {
 549                 /* Avoid suspend failed when usb_kill_urb */
 550                 return;
 551         }
 552
 553         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 554                 return;
 555
 556         usb_mark_last_busy(data->udev);
 557         usb_anchor_urb(urb, &data->intr_anchor);
 558
 559         err = usb_submit_urb(urb, GFP_ATOMIC);
 560         if (err < 0) {
 561                 /* -EPERM: urb is being killed;
 562                  * -ENODEV: device got disconnected */
 563                 if (err != -EPERM && err != -ENODEV)
 564                         BT_ERR("%s urb %p failed to resubmit (%d)",
 565                                hdev->name, urb, -err);
 566                 usb_unanchor_urb(urb);
 567         }
 568 }
 569
 570 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 571 {
 572         struct btusb_data *data = hci_get_drvdata(hdev);
 573         struct urb *urb;
 574         unsigned char *buf;
 575         unsigned int pipe;
 576         int err, size;
 577
 578         BT_DBG("%s", hdev->name);
 579
 580         if (!data->intr_ep)
 581                 return -ENODEV;
 582
 583         urb = usb_alloc_urb(0, mem_flags);
 584         if (!urb)
 585                 return -ENOMEM;
 586
 587         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 588
 589         buf = kmalloc(size, mem_flags);
 590         if (!buf) {
 591                 usb_free_urb(urb);
 592                 return -ENOMEM;
 593         }
 594
 595         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 596
 597         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 598                          btusb_intr_complete, hdev, data->intr_ep->bInterval);
 599
 600         urb->transfer_flags |= URB_FREE_BUFFER;
 601
 602         usb_anchor_urb(urb, &data->intr_anchor);
 603
 604         err = usb_submit_urb(urb, mem_flags);
 605         if (err < 0) {
 606                 if (err != -EPERM && err != -ENODEV)
 607                         BT_ERR("%s urb %p submission failed (%d)",
 608                                hdev->name, urb, -err);
 609                 usb_unanchor_urb(urb);
 610         }
 611
 612         usb_free_urb(urb);
 613
 614         return err;
 615 }
 616
 617 static void btusb_bulk_complete(struct urb *urb)
 618 {
 619         struct hci_dev *hdev = urb->context;
 620         struct btusb_data *data = hci_get_drvdata(hdev);
 621         int err;
 622
 623         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 624                urb->actual_length);
 625
 626         if (!test_bit(HCI_RUNNING, &hdev->flags))
 627                 return;
 628
 629         if (urb->status == 0) {
 630                 hdev->stat.byte_rx += urb->actual_length;
 631
 632                 if (data->recv_bulk(data, urb->transfer_buffer,
 633                                     urb->actual_length) < 0) {
 634                         BT_ERR("%s corrupted ACL packet", hdev->name);
 635                         hdev->stat.err_rx++;
 636                 }
 637         } else if (urb->status == -ENOENT) {
 638                 /* Avoid suspend failed when usb_kill_urb */
 639                 return;
 640         }
 641
 642         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 643                 return;
 644
 645         usb_anchor_urb(urb, &data->bulk_anchor);
 646         usb_mark_last_busy(data->udev);
 647
 648         err = usb_submit_urb(urb, GFP_ATOMIC);
 649         if (err < 0) {
 650                 /* -EPERM: urb is being killed;
 651                  * -ENODEV: device got disconnected */
 652                 if (err != -EPERM && err != -ENODEV)
 653                         BT_ERR("%s urb %p failed to resubmit (%d)",
 654                                hdev->name, urb, -err);
 655                 usb_unanchor_urb(urb);
 656         }
 657 }
 658
 659 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 660 {
 661         struct btusb_data *data = hci_get_drvdata(hdev);
 662         struct urb *urb;
 663         unsigned char *buf;
 664         unsigned int pipe;
 665         int err, size = HCI_MAX_FRAME_SIZE;
 666
 667         BT_DBG("%s", hdev->name);
 668
 669         if (!data->bulk_rx_ep)
 670                 return -ENODEV;
 671
 672         urb = usb_alloc_urb(0, mem_flags);
 673         if (!urb)
 674                 return -ENOMEM;
 675
 676         buf = kmalloc(size, mem_flags);
 677         if (!buf) {
 678                 usb_free_urb(urb);
 679                 return -ENOMEM;
 680         }
 681
 682         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 683
 684         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
 685                           btusb_bulk_complete, hdev);
 686
 687         urb->transfer_flags |= URB_FREE_BUFFER;
 688
 689         usb_mark_last_busy(data->udev);
 690         usb_anchor_urb(urb, &data->bulk_anchor);
 691
 692         err = usb_submit_urb(urb, mem_flags);
 693         if (err < 0) {
 694                 if (err != -EPERM && err != -ENODEV)
 695                         BT_ERR("%s urb %p submission failed (%d)",
 696                                hdev->name, urb, -err);
 697                 usb_unanchor_urb(urb);
 698         }
 699
 700         usb_free_urb(urb);
 701
 702         return err;
 703 }
 704
 705 static void btusb_isoc_complete(struct urb *urb)
 706 {
 707         struct hci_dev *hdev = urb->context;
 708         struct btusb_data *data = hci_get_drvdata(hdev);
 709         int i, err;
 710
 711         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 712                urb->actual_length);
 713
 714         if (!test_bit(HCI_RUNNING, &hdev->flags))
 715                 return;
 716
 717         if (urb->status == 0) {
 718                 for (i = 0; i < urb->number_of_packets; i++) {
 719                         unsigned int offset = urb->iso_frame_desc[i].offset;
 720                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 721
 722                         if (urb->iso_frame_desc[i].status)
 723                                 continue;
 724
 725                         hdev->stat.byte_rx += length;
 726
 727                         if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
 728                                             length) < 0) {
 729                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 730                                 hdev->stat.err_rx++;
 731                         }
 732                 }
 733         } else if (urb->status == -ENOENT) {
 734                 /* Avoid suspend failed when usb_kill_urb */
 735                 return;
 736         }
 737
 738         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 739                 return;
 740
 741         usb_anchor_urb(urb, &data->isoc_anchor);
 742
 743         err = usb_submit_urb(urb, GFP_ATOMIC);
 744         if (err < 0) {
 745                 /* -EPERM: urb is being killed;
 746                  * -ENODEV: device got disconnected */
 747                 if (err != -EPERM && err != -ENODEV)
 748                         BT_ERR("%s urb %p failed to resubmit (%d)",
 749                                hdev->name, urb, -err);
 750                 usb_unanchor_urb(urb);
 751         }
 752 }
 753
 754 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 755 {
 756         int i, offset = 0;
 757
 758         BT_DBG("len %d mtu %d", len, mtu);
 759
 760         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 761                                         i++, offset += mtu, len -= mtu) {
 762                 urb->iso_frame_desc[i].offset = offset;
 763                 urb->iso_frame_desc[i].length = mtu;
 764         }
 765
 766         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 767                 urb->iso_frame_desc[i].offset = offset;
 768                 urb->iso_frame_desc[i].length = len;
 769                 i++;
 770         }
 771
 772         urb->number_of_packets = i;
 773 }
 774
 775 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 776 {
 777         struct btusb_data *data = hci_get_drvdata(hdev);
 778         struct urb *urb;
 779         unsigned char *buf;
 780         unsigned int pipe;
 781         int err, size;
 782
 783         BT_DBG("%s", hdev->name);
 784
 785         if (!data->isoc_rx_ep)
 786                 return -ENODEV;
 787
 788         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 789         if (!urb)
 790                 return -ENOMEM;
 791
 792         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 793                                                 BTUSB_MAX_ISOC_FRAMES;
 794
 795         buf = kmalloc(size, mem_flags);
 796         if (!buf) {
 797                 usb_free_urb(urb);
 798                 return -ENOMEM;
 799         }
 800
 801         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 802
 803         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 804                          hdev, data->isoc_rx_ep->bInterval);
 805
 806         urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
 807
 808         __fill_isoc_descriptor(urb, size,
 809                                le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 810
 811         usb_anchor_urb(urb, &data->isoc_anchor);
 812
 813         err = usb_submit_urb(urb, mem_flags);
 814         if (err < 0) {
 815                 if (err != -EPERM && err != -ENODEV)
 816                         BT_ERR("%s urb %p submission failed (%d)",
 817                                hdev->name, urb, -err);
 818                 usb_unanchor_urb(urb);
 819         }
 820
 821         usb_free_urb(urb);
 822
 823         return err;
 824 }
 825
 826 static void btusb_tx_complete(struct urb *urb)
 827 {
 828         struct sk_buff *skb = urb->context;
 829         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
 830         struct btusb_data *data = hci_get_drvdata(hdev);
 831
 832         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 833                urb->actual_length);
 834
 835         if (!test_bit(HCI_RUNNING, &hdev->flags))
 836                 goto done;
 837
 838         if (!urb->status)
 839                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 840         else
 841                 hdev->stat.err_tx++;
 842
 843 done:
 844         spin_lock(&data->txlock);
 845         data->tx_in_flight--;
 846         spin_unlock(&data->txlock);
 847
 848         kfree(urb->setup_packet);
 849
 850         kfree_skb(skb);
 851 }
 852
 853 static void btusb_isoc_tx_complete(struct urb *urb)
 854 {
 855         struct sk_buff *skb = urb->context;
 856         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
 857
 858         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 859                urb->actual_length);
 860
 861         if (!test_bit(HCI_RUNNING, &hdev->flags))
 862                 goto done;
 863
 864         if (!urb->status)
 865                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 866         else
 867                 hdev->stat.err_tx++;
 868
 869 done:
 870         kfree(urb->setup_packet);
 871
 872         kfree_skb(skb);
 873 }
 874
 875 static int btusb_open(struct hci_dev *hdev)
 876 {
 877         struct btusb_data *data = hci_get_drvdata(hdev);
 878         int err;
 879
 880         BT_DBG("%s", hdev->name);
 881
 882         err = usb_autopm_get_interface(data->intf);
 883         if (err < 0)
 884                 return err;
 885
 886         data->intf->needs_remote_wakeup = 1;
 887
 888         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 889                 goto done;
 890
 891         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 892                 goto done;
 893
 894         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 895         if (err < 0)
 896                 goto failed;
 897
 898         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 899         if (err < 0) {
 900                 usb_kill_anchored_urbs(&data->intr_anchor);
 901                 goto failed;
 902         }
 903
 904         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 905         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 906
 907 done:
 908         usb_autopm_put_interface(data->intf);
 909         return 0;
 910
 911 failed:
 912         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 913         clear_bit(HCI_RUNNING, &hdev->flags);
 914         usb_autopm_put_interface(data->intf);
 915         return err;
 916 }
 917
 918 static void btusb_stop_traffic(struct btusb_data *data)
 919 {
 920         usb_kill_anchored_urbs(&data->intr_anchor);
 921         usb_kill_anchored_urbs(&data->bulk_anchor);
 922         usb_kill_anchored_urbs(&data->isoc_anchor);
 923 }
 924
 925 static int btusb_close(struct hci_dev *hdev)
 926 {
 927         struct btusb_data *data = hci_get_drvdata(hdev);
 928         int err;
 929
 930         BT_DBG("%s", hdev->name);
 931
 932         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 933                 return 0;
 934
 935         cancel_work_sync(&data->work);
 936         cancel_work_sync(&data->waker);
 937
 938         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 939         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 940         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 941
 942         btusb_stop_traffic(data);
 943         btusb_free_frags(data);
 944
 945         err = usb_autopm_get_interface(data->intf);
 946         if (err < 0)
 947                 goto failed;
 948
 949         data->intf->needs_remote_wakeup = 0;
 950         usb_autopm_put_interface(data->intf);
 951
 952 failed:
 953         usb_scuttle_anchored_urbs(&data->deferred);
 954         return 0;
 955 }
 956
 957 static int btusb_flush(struct hci_dev *hdev)
 958 {
 959         struct btusb_data *data = hci_get_drvdata(hdev);
 960
 961         BT_DBG("%s", hdev->name);
 962
 963         usb_kill_anchored_urbs(&data->tx_anchor);
 964         btusb_free_frags(data);
 965
 966         return 0;
 967 }
 968
 969 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
 970 {
 971         struct btusb_data *data = hci_get_drvdata(hdev);
 972         struct usb_ctrlrequest *dr;
 973         struct urb *urb;
 974         unsigned int pipe;
 975
 976         urb = usb_alloc_urb(0, GFP_KERNEL);
 977         if (!urb)
 978                 return ERR_PTR(-ENOMEM);
 979
 980         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
 981         if (!dr) {
 982                 usb_free_urb(urb);
 983                 return ERR_PTR(-ENOMEM);
 984         }
 985
 986         dr->bRequestType = data->cmdreq_type;
 987         dr->bRequest     = data->cmdreq;
 988         dr->wIndex       = 0;
 989         dr->wValue       = 0;
 990         dr->wLength      = __cpu_to_le16(skb->len);
 991
 992         pipe = usb_sndctrlpipe(data->udev, 0x00);
 993
 994         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
 995                              skb->data, skb->len, btusb_tx_complete, skb);
 996
 997         skb->dev = (void *)hdev;
 998
 999         return urb;
1000 }
1001
1002 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
1003 {
1004         struct btusb_data *data = hci_get_drvdata(hdev);
1005         struct urb *urb;
1006         unsigned int pipe;
1007
1008         if (!data->bulk_tx_ep)
1009                 return ERR_PTR(-ENODEV);
1010
1011         urb = usb_alloc_urb(0, GFP_KERNEL);
1012         if (!urb)
1013                 return ERR_PTR(-ENOMEM);
1014
1015         pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1016
1017         usb_fill_bulk_urb(urb, data->udev, pipe,
1018                           skb->data, skb->len, btusb_tx_complete, skb);
1019
1020         skb->dev = (void *)hdev;
1021
1022         return urb;
1023 }
1024
1025 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1026 {
1027         struct btusb_data *data = hci_get_drvdata(hdev);
1028         struct urb *urb;
1029         unsigned int pipe;
1030
1031         if (!data->isoc_tx_ep)
1032                 return ERR_PTR(-ENODEV);
1033
1034         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1035         if (!urb)
1036                 return ERR_PTR(-ENOMEM);
1037
1038         pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1039
1040         usb_fill_int_urb(urb, data->udev, pipe,
1041                          skb->data, skb->len, btusb_isoc_tx_complete,
1042                          skb, data->isoc_tx_ep->bInterval);
1043
1044         urb->transfer_flags  = URB_ISO_ASAP;
1045
1046         __fill_isoc_descriptor(urb, skb->len,
1047                                le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1048
1049         skb->dev = (void *)hdev;
1050
1051         return urb;
1052 }
1053
1054 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1055 {
1056         struct btusb_data *data = hci_get_drvdata(hdev);
1057         int err;
1058
1059         usb_anchor_urb(urb, &data->tx_anchor);
1060
1061         err = usb_submit_urb(urb, GFP_KERNEL);
1062         if (err < 0) {
1063                 if (err != -EPERM && err != -ENODEV)
1064                         BT_ERR("%s urb %p submission failed (%d)",
1065                                hdev->name, urb, -err);
1066                 kfree(urb->setup_packet);
1067                 usb_unanchor_urb(urb);
1068         } else {
1069                 usb_mark_last_busy(data->udev);
1070         }
1071
1072         usb_free_urb(urb);
1073         return err;
1074 }
1075
1076 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1077 {
1078         struct btusb_data *data = hci_get_drvdata(hdev);
1079         unsigned long flags;
1080         bool suspending;
1081
1082         spin_lock_irqsave(&data->txlock, flags);
1083         suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1084         if (!suspending)
1085                 data->tx_in_flight++;
1086         spin_unlock_irqrestore(&data->txlock, flags);
1087
1088         if (!suspending)
1089                 return submit_tx_urb(hdev, urb);
1090
1091         usb_anchor_urb(urb, &data->deferred);
1092         schedule_work(&data->waker);
1093
1094         usb_free_urb(urb);
1095         return 0;
1096 }
1097
1098 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1099 {
1100         struct urb *urb;
1101
1102         BT_DBG("%s", hdev->name);
1103
1104         if (!test_bit(HCI_RUNNING, &hdev->flags))
1105                 return -EBUSY;
1106
1107         switch (bt_cb(skb)->pkt_type) {
1108         case HCI_COMMAND_PKT:
1109                 urb = alloc_ctrl_urb(hdev, skb);
1110                 if (IS_ERR(urb))
1111                         return PTR_ERR(urb);
1112
1113                 hdev->stat.cmd_tx++;
1114                 return submit_or_queue_tx_urb(hdev, urb);
1115
1116         case HCI_ACLDATA_PKT:
1117                 urb = alloc_bulk_urb(hdev, skb);
1118                 if (IS_ERR(urb))
1119                         return PTR_ERR(urb);
1120
1121                 hdev->stat.acl_tx++;
1122                 return submit_or_queue_tx_urb(hdev, urb);
1123
1124         case HCI_SCODATA_PKT:
1125                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1126                         return -ENODEV;
1127
1128                 urb = alloc_isoc_urb(hdev, skb);
1129                 if (IS_ERR(urb))
1130                         return PTR_ERR(urb);
1131
1132                 hdev->stat.sco_tx++;
1133                 return submit_tx_urb(hdev, urb);
1134         }
1135
1136         return -EILSEQ;
1137 }
1138
1139 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1140 {
1141         struct btusb_data *data = hci_get_drvdata(hdev);
1142
1143         BT_DBG("%s evt %d", hdev->name, evt);
1144
1145         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1146                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1147                 schedule_work(&data->work);
1148         }
1149 }
1150
1151 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1152 {
1153         struct btusb_data *data = hci_get_drvdata(hdev);
1154         struct usb_interface *intf = data->isoc;
1155         struct usb_endpoint_descriptor *ep_desc;
1156         int i, err;
1157
1158         if (!data->isoc)
1159                 return -ENODEV;
1160
1161         err = usb_set_interface(data->udev, 1, altsetting);
1162         if (err < 0) {
1163                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
1164                 return err;
1165         }
1166
1167         data->isoc_altsetting = altsetting;
1168
1169         data->isoc_tx_ep = NULL;
1170         data->isoc_rx_ep = NULL;
1171
1172         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1173                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1174
1175                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1176                         data->isoc_tx_ep = ep_desc;
1177                         continue;
1178                 }
1179
1180                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1181                         data->isoc_rx_ep = ep_desc;
1182                         continue;
1183                 }
1184         }
1185
1186         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1187                 BT_ERR("%s invalid SCO descriptors", hdev->name);
1188                 return -ENODEV;
1189         }
1190
1191         return 0;
1192 }
1193
1194 static void btusb_work(struct work_struct *work)
1195 {
1196         struct btusb_data *data = container_of(work, struct btusb_data, work);
1197         struct hci_dev *hdev = data->hdev;
1198         int new_alts;
1199         int err;
1200
1201         if (data->sco_num > 0) {
1202                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1203                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1204                         if (err < 0) {
1205                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1206                                 usb_kill_anchored_urbs(&data->isoc_anchor);
1207                                 return;
1208                         }
1209
1210                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1211                 }
1212
1213                 if (hdev->voice_setting & 0x0020) {
1214                         static const int alts[3] = { 2, 4, 5 };
1215
1216                         new_alts = alts[data->sco_num - 1];
1217                 } else {
1218                         new_alts = data->sco_num;
1219                 }
1220
1221                 if (data->isoc_altsetting != new_alts) {
1222                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1223                         usb_kill_anchored_urbs(&data->isoc_anchor);
1224
1225                         if (__set_isoc_interface(hdev, new_alts) < 0)
1226                                 return;
1227                 }
1228
1229                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1230                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1231                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1232                         else
1233                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1234                 }
1235         } else {
1236                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1237                 usb_kill_anchored_urbs(&data->isoc_anchor);
1238
1239                 __set_isoc_interface(hdev, 0);
1240                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1241                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1242         }
1243 }
1244
1245 static void btusb_waker(struct work_struct *work)
1246 {
1247         struct btusb_data *data = container_of(work, struct btusb_data, waker);
1248         int err;
1249
1250         err = usb_autopm_get_interface(data->intf);
1251         if (err < 0)
1252                 return;
1253
1254         usb_autopm_put_interface(data->intf);
1255 }
1256
1257 static int btusb_setup_bcm92035(struct hci_dev *hdev)
1258 {
1259         struct sk_buff *skb;
1260         u8 val = 0x00;
1261
1262         BT_DBG("%s", hdev->name);
1263
1264         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1265         if (IS_ERR(skb))
1266                 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
1267         else
1268                 kfree_skb(skb);
1269
1270         return 0;
1271 }
1272
1273 static int btusb_setup_csr(struct hci_dev *hdev)
1274 {
1275         struct hci_rp_read_local_version *rp;
1276         struct sk_buff *skb;
1277         int ret;
1278
1279         BT_DBG("%s", hdev->name);
1280
1281         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1282                              HCI_INIT_TIMEOUT);
1283         if (IS_ERR(skb)) {
1284                 BT_ERR("Reading local version failed (%ld)", -PTR_ERR(skb));
1285                 return -PTR_ERR(skb);
1286         }
1287
1288         rp = (struct hci_rp_read_local_version *)skb->data;
1289
1290         if (!rp->status) {
1291                 if (le16_to_cpu(rp->manufacturer) != 10) {
1292                         /* Clear the reset quirk since this is not an actual
1293                          * early Bluetooth 1.1 device from CSR.
1294                          */
1295                         clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1296
1297                         /* These fake CSR controllers have all a broken
1298                          * stored link key handling and so just disable it.
1299                          */
1300                         set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY,
1301                                 &hdev->quirks);
1302                 }
1303         }
1304
1305         ret = -bt_to_errno(rp->status);
1306
1307         kfree_skb(skb);
1308
1309         return ret;
1310 }
1311
1312 struct intel_version {
1313         u8 status;
1314         u8 hw_platform;
1315         u8 hw_variant;
1316         u8 hw_revision;
1317         u8 fw_variant;
1318         u8 fw_revision;
1319         u8 fw_build_num;
1320         u8 fw_build_ww;
1321         u8 fw_build_yy;
1322         u8 fw_patch_num;
1323 } __packed;
1324
1325 struct intel_boot_params {
1326         __u8     status;
1327         __u8     otp_format;
1328         __u8     otp_content;
1329         __u8     otp_patch;
1330         __le16   dev_revid;
1331         __u8     secure_boot;
1332         __u8     key_from_hdr;
1333         __u8     key_type;
1334         __u8     otp_lock;
1335         __u8     api_lock;
1336         __u8     debug_lock;
1337         bdaddr_t otp_bdaddr;
1338         __u8     min_fw_build_nn;
1339         __u8     min_fw_build_cw;
1340         __u8     min_fw_build_yy;
1341         __u8     limited_cce;
1342         __u8     unlocked_state;
1343 } __packed;
1344
1345 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1346                                                        struct intel_version *ver)
1347 {
1348         const struct firmware *fw;
1349         char fwname[64];
1350         int ret;
1351
1352         snprintf(fwname, sizeof(fwname),
1353                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1354                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
1355                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1356                  ver->fw_build_ww, ver->fw_build_yy);
1357
1358         ret = request_firmware(&fw, fwname, &hdev->dev);
1359         if (ret < 0) {
1360                 if (ret == -EINVAL) {
1361                         BT_ERR("%s Intel firmware file request failed (%d)",
1362                                hdev->name, ret);
1363                         return NULL;
1364                 }
1365
1366                 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1367                        hdev->name, fwname, ret);
1368
1369                 /* If the correct firmware patch file is not found, use the
1370                  * default firmware patch file instead
1371                  */
1372                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1373                          ver->hw_platform, ver->hw_variant);
1374                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1375                         BT_ERR("%s failed to open default Intel fw file: %s",
1376                                hdev->name, fwname);
1377                         return NULL;
1378                 }
1379         }
1380
1381         BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1382
1383         return fw;
1384 }
1385
1386 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1387                                       const struct firmware *fw,
1388                                       const u8 **fw_ptr, int *disable_patch)
1389 {
1390         struct sk_buff *skb;
1391         struct hci_command_hdr *cmd;
1392         const u8 *cmd_param;
1393         struct hci_event_hdr *evt = NULL;
1394         const u8 *evt_param = NULL;
1395         int remain = fw->size - (*fw_ptr - fw->data);
1396
1397         /* The first byte indicates the types of the patch command or event.
1398          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1399          * in the current firmware buffer doesn't start with 0x01 or
1400          * the size of remain buffer is smaller than HCI command header,
1401          * the firmware file is corrupted and it should stop the patching
1402          * process.
1403          */
1404         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1405                 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1406                 return -EINVAL;
1407         }
1408         (*fw_ptr)++;
1409         remain--;
1410
1411         cmd = (struct hci_command_hdr *)(*fw_ptr);
1412         *fw_ptr += sizeof(*cmd);
1413         remain -= sizeof(*cmd);
1414
1415         /* Ensure that the remain firmware data is long enough than the length
1416          * of command parameter. If not, the firmware file is corrupted.
1417          */
1418         if (remain < cmd->plen) {
1419                 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1420                 return -EFAULT;
1421         }
1422
1423         /* If there is a command that loads a patch in the firmware
1424          * file, then enable the patch upon success, otherwise just
1425          * disable the manufacturer mode, for example patch activation
1426          * is not required when the default firmware patch file is used
1427          * because there are no patch data to load.
1428          */
1429         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1430                 *disable_patch = 0;
1431
1432         cmd_param = *fw_ptr;
1433         *fw_ptr += cmd->plen;
1434         remain -= cmd->plen;
1435
1436         /* This reads the expected events when the above command is sent to the
1437          * device. Some vendor commands expects more than one events, for
1438          * example command status event followed by vendor specific event.
1439          * For this case, it only keeps the last expected event. so the command
1440          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1441          * last expected event.
1442          */
1443         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1444                 (*fw_ptr)++;
1445                 remain--;
1446
1447                 evt = (struct hci_event_hdr *)(*fw_ptr);
1448                 *fw_ptr += sizeof(*evt);
1449                 remain -= sizeof(*evt);
1450
1451                 if (remain < evt->plen) {
1452                         BT_ERR("%s Intel fw corrupted: invalid evt len",
1453                                hdev->name);
1454                         return -EFAULT;
1455                 }
1456
1457                 evt_param = *fw_ptr;
1458                 *fw_ptr += evt->plen;
1459                 remain -= evt->plen;
1460         }
1461
1462         /* Every HCI commands in the firmware file has its correspond event.
1463          * If event is not found or remain is smaller than zero, the firmware
1464          * file is corrupted.
1465          */
1466         if (!evt || !evt_param || remain < 0) {
1467                 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1468                 return -EFAULT;
1469         }
1470
1471         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1472                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1473         if (IS_ERR(skb)) {
1474                 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1475                        hdev->name, cmd->opcode, PTR_ERR(skb));
1476                 return PTR_ERR(skb);
1477         }
1478
1479         /* It ensures that the returned event matches the event data read from
1480          * the firmware file. At fist, it checks the length and then
1481          * the contents of the event.
1482          */
1483         if (skb->len != evt->plen) {
1484                 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1485                        le16_to_cpu(cmd->opcode));
1486                 kfree_skb(skb);
1487                 return -EFAULT;
1488         }
1489
1490         if (memcmp(skb->data, evt_param, evt->plen)) {
1491                 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1492                        hdev->name, le16_to_cpu(cmd->opcode));
1493                 kfree_skb(skb);
1494                 return -EFAULT;
1495         }
1496         kfree_skb(skb);
1497
1498         return 0;
1499 }
1500
1501 #define BDADDR_INTEL (&(bdaddr_t) {{0x00, 0x8b, 0x9e, 0x19, 0x03, 0x00}})
1502
1503 static int btusb_check_bdaddr_intel(struct hci_dev *hdev)
1504 {
1505         struct sk_buff *skb;
1506         struct hci_rp_read_bd_addr *rp;
1507
1508         skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
1509                              HCI_INIT_TIMEOUT);
1510         if (IS_ERR(skb)) {
1511                 BT_ERR("%s reading Intel device address failed (%ld)",
1512                        hdev->name, PTR_ERR(skb));
1513                 return PTR_ERR(skb);
1514         }
1515
1516         if (skb->len != sizeof(*rp)) {
1517                 BT_ERR("%s Intel device address length mismatch", hdev->name);
1518                 kfree_skb(skb);
1519                 return -EIO;
1520         }
1521
1522         rp = (struct hci_rp_read_bd_addr *)skb->data;
1523         if (rp->status) {
1524                 BT_ERR("%s Intel device address result failed (%02x)",
1525                        hdev->name, rp->status);
1526                 kfree_skb(skb);
1527                 return -bt_to_errno(rp->status);
1528         }
1529
1530         /* For some Intel based controllers, the default Bluetooth device
1531          * address 00:03:19:9E:8B:00 can be found. These controllers are
1532          * fully operational, but have the danger of duplicate addresses
1533          * and that in turn can cause problems with Bluetooth operation.
1534          */
1535         if (!bacmp(&rp->bdaddr, BDADDR_INTEL)) {
1536                 BT_ERR("%s found Intel default device address (%pMR)",
1537                        hdev->name, &rp->bdaddr);
1538                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
1539         }
1540
1541         kfree_skb(skb);
1542
1543         return 0;
1544 }
1545
1546 static int btusb_setup_intel(struct hci_dev *hdev)
1547 {
1548         struct sk_buff *skb;
1549         const struct firmware *fw;
1550         const u8 *fw_ptr;
1551         int disable_patch;
1552         struct intel_version *ver;
1553
1554         const u8 mfg_enable[] = { 0x01, 0x00 };
1555         const u8 mfg_disable[] = { 0x00, 0x00 };
1556         const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
1557         const u8 mfg_reset_activate[] = { 0x00, 0x02 };
1558
1559         BT_DBG("%s", hdev->name);
1560
1561         /* The controller has a bug with the first HCI command sent to it
1562          * returning number of completed commands as zero. This would stall the
1563          * command processing in the Bluetooth core.
1564          *
1565          * As a workaround, send HCI Reset command first which will reset the
1566          * number of completed commands and allow normal command processing
1567          * from now on.
1568          */
1569         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1570         if (IS_ERR(skb)) {
1571                 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1572                        hdev->name, PTR_ERR(skb));
1573                 return PTR_ERR(skb);
1574         }
1575         kfree_skb(skb);
1576
1577         /* Read Intel specific controller version first to allow selection of
1578          * which firmware file to load.
1579          *
1580          * The returned information are hardware variant and revision plus
1581          * firmware variant, revision and build number.
1582          */
1583         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1584         if (IS_ERR(skb)) {
1585                 BT_ERR("%s reading Intel fw version command failed (%ld)",
1586                        hdev->name, PTR_ERR(skb));
1587                 return PTR_ERR(skb);
1588         }
1589
1590         if (skb->len != sizeof(*ver)) {
1591                 BT_ERR("%s Intel version event length mismatch", hdev->name);
1592                 kfree_skb(skb);
1593                 return -EIO;
1594         }
1595
1596         ver = (struct intel_version *)skb->data;
1597         if (ver->status) {
1598                 BT_ERR("%s Intel fw version event failed (%02x)", hdev->name,
1599                        ver->status);
1600                 kfree_skb(skb);
1601                 return -bt_to_errno(ver->status);
1602         }
1603
1604         BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1605                 hdev->name, ver->hw_platform, ver->hw_variant,
1606                 ver->hw_revision, ver->fw_variant,  ver->fw_revision,
1607                 ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
1608                 ver->fw_patch_num);
1609
1610         /* fw_patch_num indicates the version of patch the device currently
1611          * have. If there is no patch data in the device, it is always 0x00.
1612          * So, if it is other than 0x00, no need to patch the deivce again.
1613          */
1614         if (ver->fw_patch_num) {
1615                 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1616                         hdev->name, ver->fw_patch_num);
1617                 kfree_skb(skb);
1618                 btusb_check_bdaddr_intel(hdev);
1619                 return 0;
1620         }
1621
1622         /* Opens the firmware patch file based on the firmware version read
1623          * from the controller. If it fails to open the matching firmware
1624          * patch file, it tries to open the default firmware patch file.
1625          * If no patch file is found, allow the device to operate without
1626          * a patch.
1627          */
1628         fw = btusb_setup_intel_get_fw(hdev, ver);
1629         if (!fw) {
1630                 kfree_skb(skb);
1631                 btusb_check_bdaddr_intel(hdev);
1632                 return 0;
1633         }
1634         fw_ptr = fw->data;
1635
1636         /* This Intel specific command enables the manufacturer mode of the
1637          * controller.
1638          *
1639          * Only while this mode is enabled, the driver can download the
1640          * firmware patch data and configuration parameters.
1641          */
1642         skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
1643         if (IS_ERR(skb)) {
1644                 BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
1645                        hdev->name, PTR_ERR(skb));
1646                 release_firmware(fw);
1647                 return PTR_ERR(skb);
1648         }
1649
1650         if (skb->data[0]) {
1651                 u8 evt_status = skb->data[0];
1652
1653                 BT_ERR("%s enable Intel manufacturer mode event failed (%02x)",
1654                        hdev->name, evt_status);
1655                 kfree_skb(skb);
1656                 release_firmware(fw);
1657                 return -bt_to_errno(evt_status);
1658         }
1659         kfree_skb(skb);
1660
1661         disable_patch = 1;
1662
1663         /* The firmware data file consists of list of Intel specific HCI
1664          * commands and its expected events. The first byte indicates the
1665          * type of the message, either HCI command or HCI event.
1666          *
1667          * It reads the command and its expected event from the firmware file,
1668          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1669          * the returned event is compared with the event read from the firmware
1670          * file and it will continue until all the messages are downloaded to
1671          * the controller.
1672          *
1673          * Once the firmware patching is completed successfully,
1674          * the manufacturer mode is disabled with reset and activating the
1675          * downloaded patch.
1676          *
1677          * If the firmware patching fails, the manufacturer mode is
1678          * disabled with reset and deactivating the patch.
1679          *
1680          * If the default patch file is used, no reset is done when disabling
1681          * the manufacturer.
1682          */
1683         while (fw->size > fw_ptr - fw->data) {
1684                 int ret;
1685
1686                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1687                                                  &disable_patch);
1688                 if (ret < 0)
1689                         goto exit_mfg_deactivate;
1690         }
1691
1692         release_firmware(fw);
1693
1694         if (disable_patch)
1695                 goto exit_mfg_disable;
1696
1697         /* Patching completed successfully and disable the manufacturer mode
1698          * with reset and activate the downloaded firmware patches.
1699          */
1700         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
1701                              mfg_reset_activate, HCI_INIT_TIMEOUT);
1702         if (IS_ERR(skb)) {
1703                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1704                        hdev->name, PTR_ERR(skb));
1705                 return PTR_ERR(skb);
1706         }
1707         kfree_skb(skb);
1708
1709         BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1710                 hdev->name);
1711
1712         btusb_check_bdaddr_intel(hdev);
1713         return 0;
1714
1715 exit_mfg_disable:
1716         /* Disable the manufacturer mode without reset */
1717         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
1718                              HCI_INIT_TIMEOUT);
1719         if (IS_ERR(skb)) {
1720                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1721                        hdev->name, PTR_ERR(skb));
1722                 return PTR_ERR(skb);
1723         }
1724         kfree_skb(skb);
1725
1726         BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1727
1728         btusb_check_bdaddr_intel(hdev);
1729         return 0;
1730
1731 exit_mfg_deactivate:
1732         release_firmware(fw);
1733
1734         /* Patching failed. Disable the manufacturer mode with reset and
1735          * deactivate the downloaded firmware patches.
1736          */
1737         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
1738                              mfg_reset_deactivate, HCI_INIT_TIMEOUT);
1739         if (IS_ERR(skb)) {
1740                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1741                        hdev->name, PTR_ERR(skb));
1742                 return PTR_ERR(skb);
1743         }
1744         kfree_skb(skb);
1745
1746         BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1747                 hdev->name);
1748
1749         btusb_check_bdaddr_intel(hdev);
1750         return 0;
1751 }
1752
1753 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
1754 {
1755         struct sk_buff *skb;
1756         struct hci_event_hdr *hdr;
1757         struct hci_ev_cmd_complete *evt;
1758
1759         skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_ATOMIC);
1760         if (!skb)
1761                 return -ENOMEM;
1762
1763         hdr = (struct hci_event_hdr *)skb_put(skb, sizeof(*hdr));
1764         hdr->evt = HCI_EV_CMD_COMPLETE;
1765         hdr->plen = sizeof(*evt) + 1;
1766
1767         evt = (struct hci_ev_cmd_complete *)skb_put(skb, sizeof(*evt));
1768         evt->ncmd = 0x01;
1769         evt->opcode = cpu_to_le16(opcode);
1770
1771         *skb_put(skb, 1) = 0x00;
1772
1773         bt_cb(skb)->pkt_type = HCI_EVENT_PKT;
1774
1775         return hci_recv_frame(hdev, skb);
1776 }
1777
1778 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
1779                                  int count)
1780 {
1781         /* When the device is in bootloader mode, then it can send
1782          * events via the bulk endpoint. These events are treated the
1783          * same way as the ones received from the interrupt endpoint.
1784          */
1785         if (test_bit(BTUSB_BOOTLOADER, &data->flags))
1786                 return btusb_recv_intr(data, buffer, count);
1787
1788         return btusb_recv_bulk(data, buffer, count);
1789 }
1790
1791 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
1792 {
1793         struct btusb_data *data = hci_get_drvdata(hdev);
1794
1795         if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1796                 struct hci_event_hdr *hdr = (void *)skb->data;
1797
1798                 /* When the firmware loading completes the device sends
1799                  * out a vendor specific event indicating the result of
1800                  * the firmware loading.
1801                  */
1802                 if (skb->len == 7 && hdr->evt == 0xff && hdr->plen == 0x05 &&
1803                     skb->data[2] == 0x06) {
1804                         if (skb->data[3] != 0x00)
1805                                 test_bit(BTUSB_FIRMWARE_FAILED, &data->flags);
1806
1807                         if (test_and_clear_bit(BTUSB_DOWNLOADING,
1808                                                &data->flags) &&
1809                             test_bit(BTUSB_FIRMWARE_LOADED, &data->flags)) {
1810                                 smp_mb__after_atomic();
1811                                 wake_up_bit(&data->flags, BTUSB_DOWNLOADING);
1812                         }
1813                 }
1814
1815                 /* When switching to the operational firmware the device
1816                  * sends a vendor specific event indicating that the bootup
1817                  * completed.
1818                  */
1819                 if (skb->len == 9 && hdr->evt == 0xff && hdr->plen == 0x07 &&
1820                     skb->data[2] == 0x02) {
1821                         if (test_and_clear_bit(BTUSB_BOOTING, &data->flags)) {
1822                                 smp_mb__after_atomic();
1823                                 wake_up_bit(&data->flags, BTUSB_BOOTING);
1824                         }
1825                 }
1826         }
1827
1828         return hci_recv_frame(hdev, skb);
1829 }
1830
1831 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
1832 {
1833         struct btusb_data *data = hci_get_drvdata(hdev);
1834         struct urb *urb;
1835
1836         BT_DBG("%s", hdev->name);
1837
1838         if (!test_bit(HCI_RUNNING, &hdev->flags))
1839                 return -EBUSY;
1840
1841         switch (bt_cb(skb)->pkt_type) {
1842         case HCI_COMMAND_PKT:
1843                 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1844                         struct hci_command_hdr *cmd = (void *)skb->data;
1845                         __u16 opcode = le16_to_cpu(cmd->opcode);
1846
1847                         /* When in bootloader mode and the command 0xfc09
1848                          * is received, it needs to be send down the
1849                          * bulk endpoint. So allocate a bulk URB instead.
1850                          */
1851                         if (opcode == 0xfc09)
1852                                 urb = alloc_bulk_urb(hdev, skb);
1853                         else
1854                                 urb = alloc_ctrl_urb(hdev, skb);
1855
1856                         /* When the 0xfc01 command is issued to boot into
1857                          * the operational firmware, it will actually not
1858                          * send a command complete event. To keep the flow
1859                          * control working inject that event here.
1860                          */
1861                         if (opcode == 0xfc01)
1862                                 inject_cmd_complete(hdev, opcode);
1863                 } else {
1864                         urb = alloc_ctrl_urb(hdev, skb);
1865                 }
1866                 if (IS_ERR(urb))
1867                         return PTR_ERR(urb);
1868
1869                 hdev->stat.cmd_tx++;
1870                 return submit_or_queue_tx_urb(hdev, urb);
1871
1872         case HCI_ACLDATA_PKT:
1873                 urb = alloc_bulk_urb(hdev, skb);
1874                 if (IS_ERR(urb))
1875                         return PTR_ERR(urb);
1876
1877                 hdev->stat.acl_tx++;
1878                 return submit_or_queue_tx_urb(hdev, urb);
1879
1880         case HCI_SCODATA_PKT:
1881                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1882                         return -ENODEV;
1883
1884                 urb = alloc_isoc_urb(hdev, skb);
1885                 if (IS_ERR(urb))
1886                         return PTR_ERR(urb);
1887
1888                 hdev->stat.sco_tx++;
1889                 return submit_tx_urb(hdev, urb);
1890         }
1891
1892         return -EILSEQ;
1893 }
1894
1895 static int btusb_intel_secure_send(struct hci_dev *hdev, u8 fragment_type,
1896                                    u32 plen, const void *param)
1897 {
1898         while (plen > 0) {
1899                 struct sk_buff *skb;
1900                 u8 cmd_param[253], fragment_len = (plen > 252) ? 252 : plen;
1901
1902                 cmd_param[0] = fragment_type;
1903                 memcpy(cmd_param + 1, param, fragment_len);
1904
1905                 skb = __hci_cmd_sync(hdev, 0xfc09, fragment_len + 1,
1906                                      cmd_param, HCI_INIT_TIMEOUT);
1907                 if (IS_ERR(skb))
1908                         return PTR_ERR(skb);
1909
1910                 kfree_skb(skb);
1911
1912                 plen -= fragment_len;
1913                 param += fragment_len;
1914         }
1915
1916         return 0;
1917 }
1918
1919 static void btusb_intel_version_info(struct hci_dev *hdev,
1920                                      struct intel_version *ver)
1921 {
1922         const char *variant;
1923
1924         switch (ver->fw_variant) {
1925         case 0x06:
1926                 variant = "Bootloader";
1927                 break;
1928         case 0x23:
1929                 variant = "Firmware";
1930                 break;
1931         default:
1932                 return;
1933         }
1934
1935         BT_INFO("%s: %s revision %u.%u build %u week %u %u", hdev->name,
1936                 variant, ver->fw_revision >> 4, ver->fw_revision & 0x0f,
1937                 ver->fw_build_num, ver->fw_build_ww, 2000 + ver->fw_build_yy);
1938 }
1939
1940 static int btusb_setup_intel_new(struct hci_dev *hdev)
1941 {
1942         static const u8 reset_param[] = { 0x00, 0x01, 0x00, 0x01,
1943                                           0x00, 0x08, 0x04, 0x00 };
1944         struct btusb_data *data = hci_get_drvdata(hdev);
1945         struct sk_buff *skb;
1946         struct intel_version *ver;
1947         struct intel_boot_params *params;
1948         const struct firmware *fw;
1949         const u8 *fw_ptr;
1950         char fwname[64];
1951         ktime_t calltime, delta, rettime;
1952         unsigned long long duration;
1953         int err;
1954
1955         BT_DBG("%s", hdev->name);
1956
1957         calltime = ktime_get();
1958
1959         /* Read the Intel version information to determine if the device
1960          * is in bootloader mode or if it already has operational firmware
1961          * loaded.
1962          */
1963         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1964         if (IS_ERR(skb)) {
1965                 BT_ERR("%s: Reading Intel version information failed (%ld)",
1966                        hdev->name, PTR_ERR(skb));
1967                 return PTR_ERR(skb);
1968         }
1969
1970         if (skb->len != sizeof(*ver)) {
1971                 BT_ERR("%s: Intel version event size mismatch", hdev->name);
1972                 kfree_skb(skb);
1973                 return -EILSEQ;
1974         }
1975
1976         ver = (struct intel_version *)skb->data;
1977         if (ver->status) {
1978                 BT_ERR("%s: Intel version command failure (%02x)",
1979                        hdev->name, ver->status);
1980                 err = -bt_to_errno(ver->status);
1981                 kfree_skb(skb);
1982                 return err;
1983         }
1984
1985         /* The hardware platform number has a fixed value of 0x37 and
1986          * for now only accept this single value.
1987          */
1988         if (ver->hw_platform != 0x37) {
1989                 BT_ERR("%s: Unsupported Intel hardware platform (%u)",
1990                        hdev->name, ver->hw_platform);
1991                 kfree_skb(skb);
1992                 return -EINVAL;
1993         }
1994
1995         /* At the moment only the hardware variant iBT 3.0 (LnP/SfP) is
1996          * supported by this firmware loading method. This check has been
1997          * put in place to ensure correct forward compatibility options
1998          * when newer hardware variants come along.
1999          */
2000         if (ver->hw_variant != 0x0b) {
2001                 BT_ERR("%s: Unsupported Intel hardware variant (%u)",
2002                        hdev->name, ver->hw_variant);
2003                 kfree_skb(skb);
2004                 return -EINVAL;
2005         }
2006
2007         btusb_intel_version_info(hdev, ver);
2008
2009         /* The firmware variant determines if the device is in bootloader
2010          * mode or is running operational firmware. The value 0x06 identifies
2011          * the bootloader and the value 0x23 identifies the operational
2012          * firmware.
2013          *
2014          * When the operational firmware is already present, then only
2015          * the check for valid Bluetooth device address is needed. This
2016          * determines if the device will be added as configured or
2017          * unconfigured controller.
2018          *
2019          * It is not possible to use the Secure Boot Parameters in this
2020          * case since that command is only available in bootloader mode.
2021          */
2022         if (ver->fw_variant == 0x23) {
2023                 kfree_skb(skb);
2024                 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2025                 btusb_check_bdaddr_intel(hdev);
2026                 return 0;
2027         }
2028
2029         /* If the device is not in bootloader mode, then the only possible
2030          * choice is to return an error and abort the device initialization.
2031          */
2032         if (ver->fw_variant != 0x06) {
2033                 BT_ERR("%s: Unsupported Intel firmware variant (%u)",
2034                        hdev->name, ver->fw_variant);
2035                 kfree_skb(skb);
2036                 return -ENODEV;
2037         }
2038
2039         kfree_skb(skb);
2040
2041         /* Read the secure boot parameters to identify the operating
2042          * details of the bootloader.
2043          */
2044         skb = __hci_cmd_sync(hdev, 0xfc0d, 0, NULL, HCI_INIT_TIMEOUT);
2045         if (IS_ERR(skb)) {
2046                 BT_ERR("%s: Reading Intel boot parameters failed (%ld)",
2047                        hdev->name, PTR_ERR(skb));
2048                 return PTR_ERR(skb);
2049         }
2050
2051         if (skb->len != sizeof(*params)) {
2052                 BT_ERR("%s: Intel boot parameters size mismatch", hdev->name);
2053                 kfree_skb(skb);
2054                 return -EILSEQ;
2055         }
2056
2057         params = (struct intel_boot_params *)skb->data;
2058         if (params->status) {
2059                 BT_ERR("%s: Intel boot parameters command failure (%02x)",
2060                        hdev->name, params->status);
2061                 err = -bt_to_errno(params->status);
2062                 kfree_skb(skb);
2063                 return err;
2064         }
2065
2066         BT_INFO("%s: Device revision is %u", hdev->name,
2067                 le16_to_cpu(params->dev_revid));
2068
2069         BT_INFO("%s: Secure boot is %s", hdev->name,
2070                 params->secure_boot ? "enabled" : "disabled");
2071
2072         BT_INFO("%s: Minimum firmware build %u week %u %u", hdev->name,
2073                 params->min_fw_build_nn, params->min_fw_build_cw,
2074                 2000 + params->min_fw_build_yy);
2075
2076         /* It is required that every single firmware fragment is acknowledged
2077          * with a command complete event. If the boot parameters indicate
2078          * that this bootloader does not send them, then abort the setup.
2079          */
2080         if (params->limited_cce != 0x00) {
2081                 BT_ERR("%s: Unsupported Intel firmware loading method (%u)",
2082                        hdev->name, params->limited_cce);
2083                 kfree_skb(skb);
2084                 return -EINVAL;
2085         }
2086
2087         /* If the OTP has no valid Bluetooth device address, then there will
2088          * also be no valid address for the operational firmware.
2089          */
2090         if (!bacmp(&params->otp_bdaddr, BDADDR_ANY)) {
2091                 BT_INFO("%s: No device address configured", hdev->name);
2092                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2093         }
2094
2095         /* With this Intel bootloader only the hardware variant and device
2096          * revision information are used to select the right firmware.
2097          *
2098          * Currently this bootloader support is limited to hardware variant
2099          * iBT 3.0 (LnP/SfP) which is identified by the value 11 (0x0b).
2100          */
2101         snprintf(fwname, sizeof(fwname), "intel/ibt-11-%u.sfi",
2102                  le16_to_cpu(params->dev_revid));
2103
2104         err = request_firmware(&fw, fwname, &hdev->dev);
2105         if (err < 0) {
2106                 BT_ERR("%s: Failed to load Intel firmware file (%d)",
2107                        hdev->name, err);
2108                 kfree_skb(skb);
2109                 return err;
2110         }
2111
2112         BT_INFO("%s: Found device firmware: %s", hdev->name, fwname);
2113
2114         kfree_skb(skb);
2115
2116         if (fw->size < 644) {
2117                 BT_ERR("%s: Invalid size of firmware file (%zu)",
2118                        hdev->name, fw->size);
2119                 err = -EBADF;
2120                 goto done;
2121         }
2122
2123         set_bit(BTUSB_DOWNLOADING, &data->flags);
2124
2125         /* Start the firmware download transaction with the Init fragment
2126          * represented by the 128 bytes of CSS header.
2127          */
2128         err = btusb_intel_secure_send(hdev, 0x00, 128, fw->data);
2129         if (err < 0) {
2130                 BT_ERR("%s: Failed to send firmware header (%d)",
2131                        hdev->name, err);
2132                 goto done;
2133         }
2134
2135         /* Send the 256 bytes of public key information from the firmware
2136          * as the PKey fragment.
2137          */
2138         err = btusb_intel_secure_send(hdev, 0x03, 256, fw->data + 128);
2139         if (err < 0) {
2140                 BT_ERR("%s: Failed to send firmware public key (%d)",
2141                        hdev->name, err);
2142                 goto done;
2143         }
2144
2145         /* Send the 256 bytes of signature information from the firmware
2146          * as the Sign fragment.
2147          */
2148         err = btusb_intel_secure_send(hdev, 0x02, 256, fw->data + 388);
2149         if (err < 0) {
2150                 BT_ERR("%s: Failed to send firmware signature (%d)",
2151                        hdev->name, err);
2152                 goto done;
2153         }
2154
2155         fw_ptr = fw->data + 644;
2156
2157         while (fw_ptr - fw->data < fw->size) {
2158                 struct hci_command_hdr *cmd = (void *)fw_ptr;
2159                 u8 cmd_len;
2160
2161                 cmd_len = sizeof(*cmd) + cmd->plen;
2162
2163                 /* Send each command from the firmware data buffer as
2164                  * a single Data fragment.
2165                  */
2166                 err = btusb_intel_secure_send(hdev, 0x01, cmd_len, fw_ptr);
2167                 if (err < 0) {
2168                         BT_ERR("%s: Failed to send firmware data (%d)",
2169                                hdev->name, err);
2170                         goto done;
2171                 }
2172
2173                 fw_ptr += cmd_len;
2174         }
2175
2176         set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2177
2178         BT_INFO("%s: Waiting for firmware download to complete", hdev->name);
2179
2180         /* Before switching the device into operational mode and with that
2181          * booting the loaded firmware, wait for the bootloader notification
2182          * that all fragments have been successfully received.
2183          *
2184          * When the event processing receives the notification, then the
2185          * BTUSB_DOWNLOADING flag will be cleared.
2186          *
2187          * The firmware loading should not take longer than 5 seconds
2188          * and thus just timeout if that happens and fail the setup
2189          * of this device.
2190          */
2191         err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
2192                                   TASK_INTERRUPTIBLE,
2193                                   msecs_to_jiffies(5000));
2194         if (err == 1) {
2195                 BT_ERR("%s: Firmware loading interrupted", hdev->name);
2196                 err = -EINTR;
2197                 goto done;
2198         }
2199
2200         if (err) {
2201                 BT_ERR("%s: Firmware loading timeout", hdev->name);
2202                 err = -ETIMEDOUT;
2203                 goto done;
2204         }
2205
2206         if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) {
2207                 BT_ERR("%s: Firmware loading failed", hdev->name);
2208                 err = -ENOEXEC;
2209                 goto done;
2210         }
2211
2212         rettime = ktime_get();
2213         delta = ktime_sub(rettime, calltime);
2214         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2215
2216         BT_INFO("%s: Firmware loaded in %llu usecs", hdev->name, duration);
2217
2218 done:
2219         release_firmware(fw);
2220
2221         if (err < 0)
2222                 return err;
2223
2224         calltime = ktime_get();
2225
2226         set_bit(BTUSB_BOOTING, &data->flags);
2227
2228         skb = __hci_cmd_sync(hdev, 0xfc01, sizeof(reset_param), reset_param,
2229                              HCI_INIT_TIMEOUT);
2230         if (IS_ERR(skb))
2231                 return PTR_ERR(skb);
2232
2233         kfree_skb(skb);
2234
2235         /* The bootloader will not indicate when the device is ready. This
2236          * is done by the operational firmware sending bootup notification.
2237          *
2238          * Booting into operational firmware should not take longer than
2239          * 1 second. However if that happens, then just fail the setup
2240          * since something went wrong.
2241          */
2242         BT_INFO("%s: Waiting for device to boot", hdev->name);
2243
2244         err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING,
2245                                   TASK_INTERRUPTIBLE,
2246                                   msecs_to_jiffies(1000));
2247
2248         if (err == 1) {
2249                 BT_ERR("%s: Device boot interrupted", hdev->name);
2250                 return -EINTR;
2251         }
2252
2253         if (err) {
2254                 BT_ERR("%s: Device boot timeout", hdev->name);
2255                 return -ETIMEDOUT;
2256         }
2257
2258         rettime = ktime_get();
2259         delta = ktime_sub(rettime, calltime);
2260         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2261
2262         BT_INFO("%s: Device booted in %llu usecs", hdev->name, duration);
2263
2264         clear_bit(BTUSB_BOOTLOADER, &data->flags);
2265
2266         return 0;
2267 }
2268
2269 static void btusb_hw_error_intel(struct hci_dev *hdev, u8 code)
2270 {
2271         struct sk_buff *skb;
2272         u8 type = 0x00;
2273
2274         BT_ERR("%s: Hardware error 0x%2.2x", hdev->name, code);
2275
2276         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2277         if (IS_ERR(skb)) {
2278                 BT_ERR("%s: Reset after hardware error failed (%ld)",
2279                        hdev->name, PTR_ERR(skb));
2280                 return;
2281         }
2282         kfree_skb(skb);
2283
2284         skb = __hci_cmd_sync(hdev, 0xfc22, 1, &type, HCI_INIT_TIMEOUT);
2285         if (IS_ERR(skb)) {
2286                 BT_ERR("%s: Retrieving Intel exception info failed (%ld)",
2287                        hdev->name, PTR_ERR(skb));
2288                 return;
2289         }
2290
2291         if (skb->len != 13) {
2292                 BT_ERR("%s: Exception info size mismatch", hdev->name);
2293                 kfree_skb(skb);
2294                 return;
2295         }
2296
2297         if (skb->data[0] != 0x00) {
2298                 BT_ERR("%s: Exception info command failure (%02x)",
2299                        hdev->name, skb->data[0]);
2300                 kfree_skb(skb);
2301                 return;
2302         }
2303
2304         BT_ERR("%s: Exception info %s", hdev->name, (char *)(skb->data + 1));
2305
2306         kfree_skb(skb);
2307 }
2308
2309 static int btusb_set_bdaddr_intel(struct hci_dev *hdev, const bdaddr_t *bdaddr)
2310 {
2311         struct sk_buff *skb;
2312         long ret;
2313
2314         skb = __hci_cmd_sync(hdev, 0xfc31, 6, bdaddr, HCI_INIT_TIMEOUT);
2315         if (IS_ERR(skb)) {
2316                 ret = PTR_ERR(skb);
2317                 BT_ERR("%s: changing Intel device address failed (%ld)",
2318                        hdev->name, ret);
2319                 return ret;
2320         }
2321         kfree_skb(skb);
2322
2323         return 0;
2324 }
2325
2326 static int btusb_shutdown_intel(struct hci_dev *hdev)
2327 {
2328         struct sk_buff *skb;
2329         long ret;
2330
2331         /* Some platforms have an issue with BT LED when the interface is
2332          * down or BT radio is turned off, which takes 5 seconds to BT LED
2333          * goes off. This command turns off the BT LED immediately.
2334          */
2335         skb = __hci_cmd_sync(hdev, 0xfc3f, 0, NULL, HCI_INIT_TIMEOUT);
2336         if (IS_ERR(skb)) {
2337                 ret = PTR_ERR(skb);
2338                 BT_ERR("%s: turning off Intel device LED failed (%ld)",
2339                        hdev->name, ret);
2340                 return ret;
2341         }
2342         kfree_skb(skb);
2343
2344         return 0;
2345 }
2346
2347 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
2348                                     const bdaddr_t *bdaddr)
2349 {
2350         struct sk_buff *skb;
2351         u8 buf[8];
2352         long ret;
2353
2354         buf[0] = 0xfe;
2355         buf[1] = sizeof(bdaddr_t);
2356         memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
2357
2358         skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2359         if (IS_ERR(skb)) {
2360                 ret = PTR_ERR(skb);
2361                 BT_ERR("%s: changing Marvell device address failed (%ld)",
2362                        hdev->name, ret);
2363                 return ret;
2364         }
2365         kfree_skb(skb);
2366
2367         return 0;
2368 }
2369
2370 static const struct {
2371         u16 subver;
2372         const char *name;
2373 } bcm_subver_table[] = {
2374         { 0x210b, "BCM43142A0"  },      /* 001.001.011 */
2375         { 0x2112, "BCM4314A0"   },      /* 001.001.018 */
2376         { 0x2118, "BCM20702A0"  },      /* 001.001.024 */
2377         { 0x2126, "BCM4335A0"   },      /* 001.001.038 */
2378         { 0x220e, "BCM20702A1"  },      /* 001.002.014 */
2379         { 0x230f, "BCM4354A2"   },      /* 001.003.015 */
2380         { 0x4106, "BCM4335B0"   },      /* 002.001.006 */
2381         { 0x410e, "BCM20702B0"  },      /* 002.001.014 */
2382         { 0x6109, "BCM4335C0"   },      /* 003.001.009 */
2383         { 0x610c, "BCM4354"     },      /* 003.001.012 */
2384         { }
2385 };
2386
2387 #define BDADDR_BCM20702A0 (&(bdaddr_t) {{0x00, 0xa0, 0x02, 0x70, 0x20, 0x00}})
2388
2389 static int btusb_setup_bcm_patchram(struct hci_dev *hdev)
2390 {
2391         struct btusb_data *data = hci_get_drvdata(hdev);
2392         struct usb_device *udev = data->udev;
2393         char fw_name[64];
2394         const struct firmware *fw;
2395         const u8 *fw_ptr;
2396         size_t fw_size;
2397         const struct hci_command_hdr *cmd;
2398         const u8 *cmd_param;
2399         u16 opcode, subver, rev;
2400         const char *hw_name = NULL;
2401         struct sk_buff *skb;
2402         struct hci_rp_read_local_version *ver;
2403         struct hci_rp_read_bd_addr *bda;
2404         long ret;
2405         int i;
2406
2407         /* Reset */
2408         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2409         if (IS_ERR(skb)) {
2410                 ret = PTR_ERR(skb);
2411                 BT_ERR("%s: HCI_OP_RESET failed (%ld)", hdev->name, ret);
2412                 return ret;
2413         }
2414         kfree_skb(skb);
2415
2416         /* Read Local Version Info */
2417         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
2418                              HCI_INIT_TIMEOUT);
2419         if (IS_ERR(skb)) {
2420                 ret = PTR_ERR(skb);
2421                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION failed (%ld)",
2422                        hdev->name, ret);
2423                 return ret;
2424         }
2425
2426         if (skb->len != sizeof(*ver)) {
2427                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION event length mismatch",
2428                        hdev->name);
2429                 kfree_skb(skb);
2430                 return -EIO;
2431         }
2432
2433         ver = (struct hci_rp_read_local_version *)skb->data;
2434         rev = le16_to_cpu(ver->hci_rev);
2435         subver = le16_to_cpu(ver->lmp_subver);
2436         kfree_skb(skb);
2437
2438         for (i = 0; bcm_subver_table[i].name; i++) {
2439                 if (subver == bcm_subver_table[i].subver) {
2440                         hw_name = bcm_subver_table[i].name;
2441                         break;
2442                 }
2443         }
2444
2445         BT_INFO("%s: %s (%3.3u.%3.3u.%3.3u) build %4.4u", hdev->name,
2446                 hw_name ? : "BCM", (subver & 0x7000) >> 13,
2447                 (subver & 0x1f00) >> 8, (subver & 0x00ff), rev & 0x0fff);
2448
2449         snprintf(fw_name, sizeof(fw_name), "brcm/%s-%4.4x-%4.4x.hcd",
2450                  hw_name ? : "BCM",
2451                  le16_to_cpu(udev->descriptor.idVendor),
2452                  le16_to_cpu(udev->descriptor.idProduct));
2453
2454         ret = request_firmware(&fw, fw_name, &hdev->dev);
2455         if (ret < 0) {
2456                 BT_INFO("%s: BCM: patch %s not found", hdev->name, fw_name);
2457                 return 0;
2458         }
2459
2460         /* Start Download */
2461         skb = __hci_cmd_sync(hdev, 0xfc2e, 0, NULL, HCI_INIT_TIMEOUT);
2462         if (IS_ERR(skb)) {
2463                 ret = PTR_ERR(skb);
2464                 BT_ERR("%s: BCM: Download Minidrv command failed (%ld)",
2465                        hdev->name, ret);
2466                 goto reset_fw;
2467         }
2468         kfree_skb(skb);
2469
2470         /* 50 msec delay after Download Minidrv completes */
2471         msleep(50);
2472
2473         fw_ptr = fw->data;
2474         fw_size = fw->size;
2475
2476         while (fw_size >= sizeof(*cmd)) {
2477                 cmd = (struct hci_command_hdr *)fw_ptr;
2478                 fw_ptr += sizeof(*cmd);
2479                 fw_size -= sizeof(*cmd);
2480
2481                 if (fw_size < cmd->plen) {
2482                         BT_ERR("%s: BCM: patch %s is corrupted",
2483                                hdev->name, fw_name);
2484                         ret = -EINVAL;
2485                         goto reset_fw;
2486                 }
2487
2488                 cmd_param = fw_ptr;
2489                 fw_ptr += cmd->plen;
2490                 fw_size -= cmd->plen;
2491
2492                 opcode = le16_to_cpu(cmd->opcode);
2493
2494                 skb = __hci_cmd_sync(hdev, opcode, cmd->plen, cmd_param,
2495                                      HCI_INIT_TIMEOUT);
2496                 if (IS_ERR(skb)) {
2497                         ret = PTR_ERR(skb);
2498                         BT_ERR("%s: BCM: patch command %04x failed (%ld)",
2499                                hdev->name, opcode, ret);
2500                         goto reset_fw;
2501                 }
2502                 kfree_skb(skb);
2503         }
2504
2505         /* 250 msec delay after Launch Ram completes */
2506         msleep(250);
2507
2508 reset_fw:
2509         /* Reset */
2510         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2511         if (IS_ERR(skb)) {
2512                 ret = PTR_ERR(skb);
2513                 BT_ERR("%s: HCI_OP_RESET failed (%ld)", hdev->name, ret);
2514                 goto done;
2515         }
2516         kfree_skb(skb);
2517
2518         /* Read Local Version Info */
2519         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
2520                              HCI_INIT_TIMEOUT);
2521         if (IS_ERR(skb)) {
2522                 ret = PTR_ERR(skb);
2523                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION failed (%ld)",
2524                        hdev->name, ret);
2525                 goto done;
2526         }
2527
2528         if (skb->len != sizeof(*ver)) {
2529                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION event length mismatch",
2530                        hdev->name);
2531                 kfree_skb(skb);
2532                 ret = -EIO;
2533                 goto done;
2534         }
2535
2536         ver = (struct hci_rp_read_local_version *)skb->data;
2537         rev = le16_to_cpu(ver->hci_rev);
2538         subver = le16_to_cpu(ver->lmp_subver);
2539         kfree_skb(skb);
2540
2541         BT_INFO("%s: %s (%3.3u.%3.3u.%3.3u) build %4.4u", hdev->name,
2542                 hw_name ? : "BCM", (subver & 0x7000) >> 13,
2543                 (subver & 0x1f00) >> 8, (subver & 0x00ff), rev & 0x0fff);
2544
2545         /* Read BD Address */
2546         skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
2547                              HCI_INIT_TIMEOUT);
2548         if (IS_ERR(skb)) {
2549                 ret = PTR_ERR(skb);
2550                 BT_ERR("%s: HCI_OP_READ_BD_ADDR failed (%ld)",
2551                        hdev->name, ret);
2552                 goto done;
2553         }
2554
2555         if (skb->len != sizeof(*bda)) {
2556                 BT_ERR("%s: HCI_OP_READ_BD_ADDR event length mismatch",
2557                        hdev->name);
2558                 kfree_skb(skb);
2559                 ret = -EIO;
2560                 goto done;
2561         }
2562
2563         bda = (struct hci_rp_read_bd_addr *)skb->data;
2564         if (bda->status) {
2565                 BT_ERR("%s: HCI_OP_READ_BD_ADDR error status (%02x)",
2566                        hdev->name, bda->status);
2567                 kfree_skb(skb);
2568                 ret = -bt_to_errno(bda->status);
2569                 goto done;
2570         }
2571
2572         /* The address 00:20:70:02:A0:00 indicates a BCM20702A0 controller
2573          * with no configured address.
2574          */
2575         if (!bacmp(&bda->bdaddr, BDADDR_BCM20702A0)) {
2576                 BT_INFO("%s: BCM: using default device address (%pMR)",
2577                         hdev->name, &bda->bdaddr);
2578                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2579         }
2580
2581         kfree_skb(skb);
2582
2583 done:
2584         release_firmware(fw);
2585
2586         return ret;
2587 }
2588
2589 static int btusb_set_bdaddr_bcm(struct hci_dev *hdev, const bdaddr_t *bdaddr)
2590 {
2591         struct sk_buff *skb;
2592         long ret;
2593
2594         skb = __hci_cmd_sync(hdev, 0xfc01, 6, bdaddr, HCI_INIT_TIMEOUT);
2595         if (IS_ERR(skb)) {
2596                 ret = PTR_ERR(skb);
2597                 BT_ERR("%s: BCM: Change address command failed (%ld)",
2598                        hdev->name, ret);
2599                 return ret;
2600         }
2601         kfree_skb(skb);
2602
2603         return 0;
2604 }
2605
2606 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
2607                                     const bdaddr_t *bdaddr)
2608 {
2609         struct sk_buff *skb;
2610         u8 buf[10];
2611         long ret;
2612
2613         buf[0] = 0x01;
2614         buf[1] = 0x01;
2615         buf[2] = 0x00;
2616         buf[3] = sizeof(bdaddr_t);
2617         memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
2618
2619         skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2620         if (IS_ERR(skb)) {
2621                 ret = PTR_ERR(skb);
2622                 BT_ERR("%s: Change address command failed (%ld)",
2623                        hdev->name, ret);
2624                 return ret;
2625         }
2626         kfree_skb(skb);
2627
2628         return 0;
2629 }
2630
2631 static int btusb_probe(struct usb_interface *intf,
2632                        const struct usb_device_id *id)
2633 {
2634         struct usb_endpoint_descriptor *ep_desc;
2635         struct btusb_data *data;
2636         struct hci_dev *hdev;
2637         int i, err;
2638
2639         BT_DBG("intf %p id %p", intf, id);
2640
2641         /* interface numbers are hardcoded in the spec */
2642         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
2643                 return -ENODEV;
2644
2645         if (!id->driver_info) {
2646                 const struct usb_device_id *match;
2647
2648                 match = usb_match_id(intf, blacklist_table);
2649                 if (match)
2650                         id = match;
2651         }
2652
2653         if (id->driver_info == BTUSB_IGNORE)
2654                 return -ENODEV;
2655
2656         if (id->driver_info & BTUSB_ATH3012) {
2657                 struct usb_device *udev = interface_to_usbdev(intf);
2658
2659                 /* Old firmware would otherwise let ath3k driver load
2660                  * patch and sysconfig files */
2661                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
2662                         return -ENODEV;
2663         }
2664
2665         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
2666         if (!data)
2667                 return -ENOMEM;
2668
2669         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2670                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2671
2672                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
2673                         data->intr_ep = ep_desc;
2674                         continue;
2675                 }
2676
2677                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
2678                         data->bulk_tx_ep = ep_desc;
2679                         continue;
2680                 }
2681
2682                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
2683                         data->bulk_rx_ep = ep_desc;
2684                         continue;
2685                 }
2686         }
2687
2688         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
2689                 return -ENODEV;
2690
2691         if (id->driver_info & BTUSB_AMP) {
2692                 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
2693                 data->cmdreq = 0x2b;
2694         } else {
2695                 data->cmdreq_type = USB_TYPE_CLASS;
2696                 data->cmdreq = 0x00;
2697         }
2698
2699         data->udev = interface_to_usbdev(intf);
2700         data->intf = intf;
2701
2702         INIT_WORK(&data->work, btusb_work);
2703         INIT_WORK(&data->waker, btusb_waker);
2704         init_usb_anchor(&data->deferred);
2705         init_usb_anchor(&data->tx_anchor);
2706         spin_lock_init(&data->txlock);
2707
2708         init_usb_anchor(&data->intr_anchor);
2709         init_usb_anchor(&data->bulk_anchor);
2710         init_usb_anchor(&data->isoc_anchor);
2711         spin_lock_init(&data->rxlock);
2712
2713         if (id->driver_info & BTUSB_INTEL_NEW) {
2714                 data->recv_event = btusb_recv_event_intel;
2715                 data->recv_bulk = btusb_recv_bulk_intel;
2716                 set_bit(BTUSB_BOOTLOADER, &data->flags);
2717         } else {
2718                 data->recv_event = hci_recv_frame;
2719                 data->recv_bulk = btusb_recv_bulk;
2720         }
2721
2722         hdev = hci_alloc_dev();
2723         if (!hdev)
2724                 return -ENOMEM;
2725
2726         hdev->bus = HCI_USB;
2727         hci_set_drvdata(hdev, data);
2728
2729         if (id->driver_info & BTUSB_AMP)
2730                 hdev->dev_type = HCI_AMP;
2731         else
2732                 hdev->dev_type = HCI_BREDR;
2733
2734         data->hdev = hdev;
2735
2736         SET_HCIDEV_DEV(hdev, &intf->dev);
2737
2738         hdev->open   = btusb_open;
2739         hdev->close  = btusb_close;
2740         hdev->flush  = btusb_flush;
2741         hdev->send   = btusb_send_frame;
2742         hdev->notify = btusb_notify;
2743
2744         if (id->driver_info & BTUSB_BCM92035)
2745                 hdev->setup = btusb_setup_bcm92035;
2746
2747         if (id->driver_info & BTUSB_BCM_PATCHRAM) {
2748                 hdev->setup = btusb_setup_bcm_patchram;
2749                 hdev->set_bdaddr = btusb_set_bdaddr_bcm;
2750                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2751         }
2752
2753         if (id->driver_info & BTUSB_INTEL) {
2754                 hdev->setup = btusb_setup_intel;
2755                 hdev->shutdown = btusb_shutdown_intel;
2756                 hdev->set_bdaddr = btusb_set_bdaddr_intel;
2757                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2758         }
2759
2760         if (id->driver_info & BTUSB_INTEL_NEW) {
2761                 hdev->send = btusb_send_frame_intel;
2762                 hdev->setup = btusb_setup_intel_new;
2763                 hdev->hw_error = btusb_hw_error_intel;
2764                 hdev->set_bdaddr = btusb_set_bdaddr_intel;
2765                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2766         }
2767
2768         if (id->driver_info & BTUSB_MARVELL)
2769                 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
2770
2771         if (id->driver_info & BTUSB_SWAVE) {
2772                 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
2773                 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
2774         }
2775
2776         if (id->driver_info & BTUSB_INTEL_BOOT)
2777                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
2778
2779         if (id->driver_info & BTUSB_ATH3012) {
2780                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
2781                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2782         }
2783
2784         if (id->driver_info & BTUSB_AMP) {
2785                 /* AMP controllers do not support SCO packets */
2786                 data->isoc = NULL;
2787         } else {
2788                 /* Interface numbers are hardcoded in the specification */
2789                 data->isoc = usb_ifnum_to_if(data->udev, 1);
2790         }
2791
2792         if (!reset)
2793                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2794
2795         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
2796                 if (!disable_scofix)
2797                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
2798         }
2799
2800         if (id->driver_info & BTUSB_BROKEN_ISOC)
2801                 data->isoc = NULL;
2802
2803         if (id->driver_info & BTUSB_DIGIANSWER) {
2804                 data->cmdreq_type = USB_TYPE_VENDOR;
2805                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2806         }
2807
2808         if (id->driver_info & BTUSB_CSR) {
2809                 struct usb_device *udev = data->udev;
2810                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
2811
2812                 /* Old firmware would otherwise execute USB reset */
2813                 if (bcdDevice < 0x117)
2814                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2815
2816                 /* Fake CSR devices with broken commands */
2817                 if (bcdDevice <= 0x100)
2818                         hdev->setup = btusb_setup_csr;
2819         }
2820
2821         if (id->driver_info & BTUSB_SNIFFER) {
2822                 struct usb_device *udev = data->udev;
2823
2824                 /* New sniffer firmware has crippled HCI interface */
2825                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
2826                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
2827         }
2828
2829         if (id->driver_info & BTUSB_INTEL_BOOT) {
2830                 /* A bug in the bootloader causes that interrupt interface is
2831                  * only enabled after receiving SetInterface(0, AltSetting=0).
2832                  */
2833                 err = usb_set_interface(data->udev, 0, 0);
2834                 if (err < 0) {
2835                         BT_ERR("failed to set interface 0, alt 0 %d", err);
2836                         hci_free_dev(hdev);
2837                         return err;
2838                 }
2839         }
2840
2841         if (data->isoc) {
2842                 err = usb_driver_claim_interface(&btusb_driver,
2843                                                  data->isoc, data);
2844                 if (err < 0) {
2845                         hci_free_dev(hdev);
2846                         return err;
2847                 }
2848         }
2849
2850         err = hci_register_dev(hdev);
2851         if (err < 0) {
2852                 hci_free_dev(hdev);
2853                 return err;
2854         }
2855
2856         usb_set_intfdata(intf, data);
2857
2858         return 0;
2859 }
2860
2861 static void btusb_disconnect(struct usb_interface *intf)
2862 {
2863         struct btusb_data *data = usb_get_intfdata(intf);
2864         struct hci_dev *hdev;
2865
2866         BT_DBG("intf %p", intf);
2867
2868         if (!data)
2869                 return;
2870
2871         hdev = data->hdev;
2872         usb_set_intfdata(data->intf, NULL);
2873
2874         if (data->isoc)
2875                 usb_set_intfdata(data->isoc, NULL);
2876
2877         hci_unregister_dev(hdev);
2878
2879         if (intf == data->isoc)
2880                 usb_driver_release_interface(&btusb_driver, data->intf);
2881         else if (data->isoc)
2882                 usb_driver_release_interface(&btusb_driver, data->isoc);
2883
2884         hci_free_dev(hdev);
2885 }
2886
2887 #ifdef CONFIG_PM
2888 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
2889 {
2890         struct btusb_data *data = usb_get_intfdata(intf);
2891
2892         BT_DBG("intf %p", intf);
2893
2894         if (data->suspend_count++)
2895                 return 0;
2896
2897         spin_lock_irq(&data->txlock);
2898         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
2899                 set_bit(BTUSB_SUSPENDING, &data->flags);
2900                 spin_unlock_irq(&data->txlock);
2901         } else {
2902                 spin_unlock_irq(&data->txlock);
2903                 data->suspend_count--;
2904                 return -EBUSY;
2905         }
2906
2907         cancel_work_sync(&data->work);
2908
2909         btusb_stop_traffic(data);
2910         usb_kill_anchored_urbs(&data->tx_anchor);
2911
2912         return 0;
2913 }
2914
2915 static void play_deferred(struct btusb_data *data)
2916 {
2917         struct urb *urb;
2918         int err;
2919
2920         while ((urb = usb_get_from_anchor(&data->deferred))) {
2921                 err = usb_submit_urb(urb, GFP_ATOMIC);
2922                 if (err < 0)
2923                         break;
2924
2925                 data->tx_in_flight++;
2926         }
2927         usb_scuttle_anchored_urbs(&data->deferred);
2928 }
2929
2930 static int btusb_resume(struct usb_interface *intf)
2931 {
2932         struct btusb_data *data = usb_get_intfdata(intf);
2933         struct hci_dev *hdev = data->hdev;
2934         int err = 0;
2935
2936         BT_DBG("intf %p", intf);
2937
2938         if (--data->suspend_count)
2939                 return 0;
2940
2941         if (!test_bit(HCI_RUNNING, &hdev->flags))
2942                 goto done;
2943
2944         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
2945                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
2946                 if (err < 0) {
2947                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
2948                         goto failed;
2949                 }
2950         }
2951
2952         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
2953                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
2954                 if (err < 0) {
2955                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
2956                         goto failed;
2957                 }
2958
2959                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
2960         }
2961
2962         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
2963                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
2964                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
2965                 else
2966                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
2967         }
2968
2969         spin_lock_irq(&data->txlock);
2970         play_deferred(data);
2971         clear_bit(BTUSB_SUSPENDING, &data->flags);
2972         spin_unlock_irq(&data->txlock);
2973         schedule_work(&data->work);
2974
2975         return 0;
2976
2977 failed:
2978         usb_scuttle_anchored_urbs(&data->deferred);
2979 done:
2980         spin_lock_irq(&data->txlock);
2981         clear_bit(BTUSB_SUSPENDING, &data->flags);
2982         spin_unlock_irq(&data->txlock);
2983
2984         return err;
2985 }
2986 #endif
2987
2988 static struct usb_driver btusb_driver = {
2989         .name           = "btusb",
2990         .probe          = btusb_probe,
2991         .disconnect     = btusb_disconnect,
2992 #ifdef CONFIG_PM
2993         .suspend        = btusb_suspend,
2994         .resume         = btusb_resume,
2995 #endif
2996         .id_table       = btusb_table,
2997         .supports_autosuspend = 1,
2998         .disable_hub_initiated_lpm = 1,
2999 };
3000
3001 module_usb_driver(btusb_driver);
3002
3003 module_param(disable_scofix, bool, 0644);
3004 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
3005
3006 module_param(force_scofix, bool, 0644);
3007 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
3008
3009 module_param(reset, bool, 0644);
3010 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
3011
3012 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
3013 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
3014 MODULE_VERSION(VERSION);
3015 MODULE_LICENSE("GPL");