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         /* Broadcom devices with vendor specific id */
 126         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
 127           .driver_info = BTUSB_BCM_PATCHRAM },
 128
 129         /* ASUSTek Computer - Broadcom based */
 130         { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01),
 131           .driver_info = BTUSB_BCM_PATCHRAM },
 132
 133         /* Belkin F8065bf - Broadcom based */
 134         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01) },
 135
 136         /* IMC Networks - Broadcom based */
 137         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01) },
 138
 139         /* Intel Bluetooth USB Bootloader (RAM module) */
 140         { USB_DEVICE(0x8087, 0x0a5a),
 141           .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
 142
 143         { }     /* Terminating entry */
 144 };
 145
 146 MODULE_DEVICE_TABLE(usb, btusb_table);
 147
 148 static const struct usb_device_id blacklist_table[] = {
 149         /* CSR BlueCore devices */
 150         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 151
 152         /* Broadcom BCM2033 without firmware */
 153         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 154
 155         /* Atheros 3011 with sflash firmware */
 156         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 157         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 158         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 159         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 160         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 161         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 162
 163         /* Atheros AR9285 Malbec with sflash firmware */
 164         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 165
 166         /* Atheros 3012 with sflash firmware */
 167         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 168         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 169         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 170         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 171         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 172         { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
 173         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 174         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 175         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 176         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 177         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 178         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 179         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 180         { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
 181         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 182         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 183         { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
 184         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 185         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 186         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 187         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 188         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 189         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
 190         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 191         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 192         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 193         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 194         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 195         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 196         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 197         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 198         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 199         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 200         { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
 201         { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
 202         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
 203
 204         /* Atheros AR5BBU12 with sflash firmware */
 205         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 206
 207         /* Atheros AR5BBU12 with sflash firmware */
 208         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 209         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 210
 211         /* Broadcom BCM2035 */
 212         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 213         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 214         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 215
 216         /* Broadcom BCM2045 */
 217         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 218         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 219
 220         /* IBM/Lenovo ThinkPad with Broadcom chip */
 221         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 222         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 223
 224         /* HP laptop with Broadcom chip */
 225         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 226
 227         /* Dell laptop with Broadcom chip */
 228         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 229
 230         /* Dell Wireless 370 and 410 devices */
 231         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 232         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 233
 234         /* Belkin F8T012 and F8T013 devices */
 235         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 236         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 237
 238         /* Asus WL-BTD202 device */
 239         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 240
 241         /* Kensington Bluetooth USB adapter */
 242         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 243
 244         /* RTX Telecom based adapters with buggy SCO support */
 245         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 246         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 247
 248         /* CONWISE Technology based adapters with buggy SCO support */
 249         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 250
 251         /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
 252         { USB_DEVICE(0x1300, 0x0001), .driver_info = BTUSB_SWAVE },
 253
 254         /* Digianswer devices */
 255         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 256         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 257
 258         /* CSR BlueCore Bluetooth Sniffer */
 259         { USB_DEVICE(0x0a12, 0x0002),
 260           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 261
 262         /* Frontline ComProbe Bluetooth Sniffer */
 263         { USB_DEVICE(0x16d3, 0x0002),
 264           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 265
 266         /* Marvell Bluetooth devices */
 267         { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
 268         { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
 269
 270         /* Intel Bluetooth devices */
 271         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 272         { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
 273         { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_NEW },
 274
 275         /* Other Intel Bluetooth devices */
 276         { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01),
 277           .driver_info = BTUSB_IGNORE },
 278
 279         { }     /* Terminating entry */
 280 };
 281
 282 #define BTUSB_MAX_ISOC_FRAMES   10
 283
 284 #define BTUSB_INTR_RUNNING      0
 285 #define BTUSB_BULK_RUNNING      1
 286 #define BTUSB_ISOC_RUNNING      2
 287 #define BTUSB_SUSPENDING        3
 288 #define BTUSB_DID_ISO_RESUME    4
 289 #define BTUSB_BOOTLOADER        5
 290 #define BTUSB_DOWNLOADING       6
 291 #define BTUSB_FIRMWARE_LOADED   7
 292 #define BTUSB_FIRMWARE_FAILED   8
 293 #define BTUSB_BOOTING           9
 294
 295 struct btusb_data {
 296         struct hci_dev       *hdev;
 297         struct usb_device    *udev;
 298         struct usb_interface *intf;
 299         struct usb_interface *isoc;
 300
 301         unsigned long flags;
 302
 303         struct work_struct work;
 304         struct work_struct waker;
 305
 306         struct usb_anchor deferred;
 307         struct usb_anchor tx_anchor;
 308         int tx_in_flight;
 309         spinlock_t txlock;
 310
 311         struct usb_anchor intr_anchor;
 312         struct usb_anchor bulk_anchor;
 313         struct usb_anchor isoc_anchor;
 314         spinlock_t rxlock;
 315
 316         struct sk_buff *evt_skb;
 317         struct sk_buff *acl_skb;
 318         struct sk_buff *sco_skb;
 319
 320         struct usb_endpoint_descriptor *intr_ep;
 321         struct usb_endpoint_descriptor *bulk_tx_ep;
 322         struct usb_endpoint_descriptor *bulk_rx_ep;
 323         struct usb_endpoint_descriptor *isoc_tx_ep;
 324         struct usb_endpoint_descriptor *isoc_rx_ep;
 325
 326         __u8 cmdreq_type;
 327         __u8 cmdreq;
 328
 329         unsigned int sco_num;
 330         int isoc_altsetting;
 331         int suspend_count;
 332
 333         int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
 334         int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
 335 };
 336
 337 static int btusb_wait_on_bit_timeout(void *word, int bit, unsigned long timeout,
 338                                      unsigned mode)
 339 {
 340         might_sleep();
 341         if (!test_bit(bit, word))
 342                 return 0;
 343         return out_of_line_wait_on_bit_timeout(word, bit, bit_wait_timeout,
 344                                                mode, timeout);
 345 }
 346
 347 static inline void btusb_free_frags(struct btusb_data *data)
 348 {
 349         unsigned long flags;
 350
 351         spin_lock_irqsave(&data->rxlock, flags);
 352
 353         kfree_skb(data->evt_skb);
 354         data->evt_skb = NULL;
 355
 356         kfree_skb(data->acl_skb);
 357         data->acl_skb = NULL;
 358
 359         kfree_skb(data->sco_skb);
 360         data->sco_skb = NULL;
 361
 362         spin_unlock_irqrestore(&data->rxlock, flags);
 363 }
 364
 365 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
 366 {
 367         struct sk_buff *skb;
 368         int err = 0;
 369
 370         spin_lock(&data->rxlock);
 371         skb = data->evt_skb;
 372
 373         while (count) {
 374                 int len;
 375
 376                 if (!skb) {
 377                         skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
 378                         if (!skb) {
 379                                 err = -ENOMEM;
 380                                 break;
 381                         }
 382
 383                         bt_cb(skb)->pkt_type = HCI_EVENT_PKT;
 384                         bt_cb(skb)->expect = HCI_EVENT_HDR_SIZE;
 385                 }
 386
 387                 len = min_t(uint, bt_cb(skb)->expect, count);
 388                 memcpy(skb_put(skb, len), buffer, len);
 389
 390                 count -= len;
 391                 buffer += len;
 392                 bt_cb(skb)->expect -= len;
 393
 394                 if (skb->len == HCI_EVENT_HDR_SIZE) {
 395                         /* Complete event header */
 396                         bt_cb(skb)->expect = hci_event_hdr(skb)->plen;
 397
 398                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 399                                 kfree_skb(skb);
 400                                 skb = NULL;
 401
 402                                 err = -EILSEQ;
 403                                 break;
 404                         }
 405                 }
 406
 407                 if (bt_cb(skb)->expect == 0) {
 408                         /* Complete frame */
 409                         data->recv_event(data->hdev, skb);
 410                         skb = NULL;
 411                 }
 412         }
 413
 414         data->evt_skb = skb;
 415         spin_unlock(&data->rxlock);
 416
 417         return err;
 418 }
 419
 420 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
 421 {
 422         struct sk_buff *skb;
 423         int err = 0;
 424
 425         spin_lock(&data->rxlock);
 426         skb = data->acl_skb;
 427
 428         while (count) {
 429                 int len;
 430
 431                 if (!skb) {
 432                         skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
 433                         if (!skb) {
 434                                 err = -ENOMEM;
 435                                 break;
 436                         }
 437
 438                         bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT;
 439                         bt_cb(skb)->expect = HCI_ACL_HDR_SIZE;
 440                 }
 441
 442                 len = min_t(uint, bt_cb(skb)->expect, count);
 443                 memcpy(skb_put(skb, len), buffer, len);
 444
 445                 count -= len;
 446                 buffer += len;
 447                 bt_cb(skb)->expect -= len;
 448
 449                 if (skb->len == HCI_ACL_HDR_SIZE) {
 450                         __le16 dlen = hci_acl_hdr(skb)->dlen;
 451
 452                         /* Complete ACL header */
 453                         bt_cb(skb)->expect = __le16_to_cpu(dlen);
 454
 455                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 456                                 kfree_skb(skb);
 457                                 skb = NULL;
 458
 459                                 err = -EILSEQ;
 460                                 break;
 461                         }
 462                 }
 463
 464                 if (bt_cb(skb)->expect == 0) {
 465                         /* Complete frame */
 466                         hci_recv_frame(data->hdev, skb);
 467                         skb = NULL;
 468                 }
 469         }
 470
 471         data->acl_skb = skb;
 472         spin_unlock(&data->rxlock);
 473
 474         return err;
 475 }
 476
 477 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
 478 {
 479         struct sk_buff *skb;
 480         int err = 0;
 481
 482         spin_lock(&data->rxlock);
 483         skb = data->sco_skb;
 484
 485         while (count) {
 486                 int len;
 487
 488                 if (!skb) {
 489                         skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
 490                         if (!skb) {
 491                                 err = -ENOMEM;
 492                                 break;
 493                         }
 494
 495                         bt_cb(skb)->pkt_type = HCI_SCODATA_PKT;
 496                         bt_cb(skb)->expect = HCI_SCO_HDR_SIZE;
 497                 }
 498
 499                 len = min_t(uint, bt_cb(skb)->expect, count);
 500                 memcpy(skb_put(skb, len), buffer, len);
 501
 502                 count -= len;
 503                 buffer += len;
 504                 bt_cb(skb)->expect -= len;
 505
 506                 if (skb->len == HCI_SCO_HDR_SIZE) {
 507                         /* Complete SCO header */
 508                         bt_cb(skb)->expect = hci_sco_hdr(skb)->dlen;
 509
 510                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 511                                 kfree_skb(skb);
 512                                 skb = NULL;
 513
 514                                 err = -EILSEQ;
 515                                 break;
 516                         }
 517                 }
 518
 519                 if (bt_cb(skb)->expect == 0) {
 520                         /* Complete frame */
 521                         hci_recv_frame(data->hdev, skb);
 522                         skb = NULL;
 523                 }
 524         }
 525
 526         data->sco_skb = skb;
 527         spin_unlock(&data->rxlock);
 528
 529         return err;
 530 }
 531
 532 static void btusb_intr_complete(struct urb *urb)
 533 {
 534         struct hci_dev *hdev = urb->context;
 535         struct btusb_data *data = hci_get_drvdata(hdev);
 536         int err;
 537
 538         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 539                urb->actual_length);
 540
 541         if (!test_bit(HCI_RUNNING, &hdev->flags))
 542                 return;
 543
 544         if (urb->status == 0) {
 545                 hdev->stat.byte_rx += urb->actual_length;
 546
 547                 if (btusb_recv_intr(data, urb->transfer_buffer,
 548                                     urb->actual_length) < 0) {
 549                         BT_ERR("%s corrupted event packet", hdev->name);
 550                         hdev->stat.err_rx++;
 551                 }
 552         } else if (urb->status == -ENOENT) {
 553                 /* Avoid suspend failed when usb_kill_urb */
 554                 return;
 555         }
 556
 557         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 558                 return;
 559
 560         usb_mark_last_busy(data->udev);
 561         usb_anchor_urb(urb, &data->intr_anchor);
 562
 563         err = usb_submit_urb(urb, GFP_ATOMIC);
 564         if (err < 0) {
 565                 /* -EPERM: urb is being killed;
 566                  * -ENODEV: device got disconnected */
 567                 if (err != -EPERM && err != -ENODEV)
 568                         BT_ERR("%s urb %p failed to resubmit (%d)",
 569                                hdev->name, urb, -err);
 570                 usb_unanchor_urb(urb);
 571         }
 572 }
 573
 574 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 575 {
 576         struct btusb_data *data = hci_get_drvdata(hdev);
 577         struct urb *urb;
 578         unsigned char *buf;
 579         unsigned int pipe;
 580         int err, size;
 581
 582         BT_DBG("%s", hdev->name);
 583
 584         if (!data->intr_ep)
 585                 return -ENODEV;
 586
 587         urb = usb_alloc_urb(0, mem_flags);
 588         if (!urb)
 589                 return -ENOMEM;
 590
 591         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 592
 593         buf = kmalloc(size, mem_flags);
 594         if (!buf) {
 595                 usb_free_urb(urb);
 596                 return -ENOMEM;
 597         }
 598
 599         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 600
 601         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 602                          btusb_intr_complete, hdev, data->intr_ep->bInterval);
 603
 604         urb->transfer_flags |= URB_FREE_BUFFER;
 605
 606         usb_anchor_urb(urb, &data->intr_anchor);
 607
 608         err = usb_submit_urb(urb, mem_flags);
 609         if (err < 0) {
 610                 if (err != -EPERM && err != -ENODEV)
 611                         BT_ERR("%s urb %p submission failed (%d)",
 612                                hdev->name, urb, -err);
 613                 usb_unanchor_urb(urb);
 614         }
 615
 616         usb_free_urb(urb);
 617
 618         return err;
 619 }
 620
 621 static void btusb_bulk_complete(struct urb *urb)
 622 {
 623         struct hci_dev *hdev = urb->context;
 624         struct btusb_data *data = hci_get_drvdata(hdev);
 625         int err;
 626
 627         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 628                urb->actual_length);
 629
 630         if (!test_bit(HCI_RUNNING, &hdev->flags))
 631                 return;
 632
 633         if (urb->status == 0) {
 634                 hdev->stat.byte_rx += urb->actual_length;
 635
 636                 if (data->recv_bulk(data, urb->transfer_buffer,
 637                                     urb->actual_length) < 0) {
 638                         BT_ERR("%s corrupted ACL packet", hdev->name);
 639                         hdev->stat.err_rx++;
 640                 }
 641         } else if (urb->status == -ENOENT) {
 642                 /* Avoid suspend failed when usb_kill_urb */
 643                 return;
 644         }
 645
 646         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 647                 return;
 648
 649         usb_anchor_urb(urb, &data->bulk_anchor);
 650         usb_mark_last_busy(data->udev);
 651
 652         err = usb_submit_urb(urb, GFP_ATOMIC);
 653         if (err < 0) {
 654                 /* -EPERM: urb is being killed;
 655                  * -ENODEV: device got disconnected */
 656                 if (err != -EPERM && err != -ENODEV)
 657                         BT_ERR("%s urb %p failed to resubmit (%d)",
 658                                hdev->name, urb, -err);
 659                 usb_unanchor_urb(urb);
 660         }
 661 }
 662
 663 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 664 {
 665         struct btusb_data *data = hci_get_drvdata(hdev);
 666         struct urb *urb;
 667         unsigned char *buf;
 668         unsigned int pipe;
 669         int err, size = HCI_MAX_FRAME_SIZE;
 670
 671         BT_DBG("%s", hdev->name);
 672
 673         if (!data->bulk_rx_ep)
 674                 return -ENODEV;
 675
 676         urb = usb_alloc_urb(0, mem_flags);
 677         if (!urb)
 678                 return -ENOMEM;
 679
 680         buf = kmalloc(size, mem_flags);
 681         if (!buf) {
 682                 usb_free_urb(urb);
 683                 return -ENOMEM;
 684         }
 685
 686         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 687
 688         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
 689                           btusb_bulk_complete, hdev);
 690
 691         urb->transfer_flags |= URB_FREE_BUFFER;
 692
 693         usb_mark_last_busy(data->udev);
 694         usb_anchor_urb(urb, &data->bulk_anchor);
 695
 696         err = usb_submit_urb(urb, mem_flags);
 697         if (err < 0) {
 698                 if (err != -EPERM && err != -ENODEV)
 699                         BT_ERR("%s urb %p submission failed (%d)",
 700                                hdev->name, urb, -err);
 701                 usb_unanchor_urb(urb);
 702         }
 703
 704         usb_free_urb(urb);
 705
 706         return err;
 707 }
 708
 709 static void btusb_isoc_complete(struct urb *urb)
 710 {
 711         struct hci_dev *hdev = urb->context;
 712         struct btusb_data *data = hci_get_drvdata(hdev);
 713         int i, err;
 714
 715         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 716                urb->actual_length);
 717
 718         if (!test_bit(HCI_RUNNING, &hdev->flags))
 719                 return;
 720
 721         if (urb->status == 0) {
 722                 for (i = 0; i < urb->number_of_packets; i++) {
 723                         unsigned int offset = urb->iso_frame_desc[i].offset;
 724                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 725
 726                         if (urb->iso_frame_desc[i].status)
 727                                 continue;
 728
 729                         hdev->stat.byte_rx += length;
 730
 731                         if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
 732                                             length) < 0) {
 733                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 734                                 hdev->stat.err_rx++;
 735                         }
 736                 }
 737         } else if (urb->status == -ENOENT) {
 738                 /* Avoid suspend failed when usb_kill_urb */
 739                 return;
 740         }
 741
 742         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 743                 return;
 744
 745         usb_anchor_urb(urb, &data->isoc_anchor);
 746
 747         err = usb_submit_urb(urb, GFP_ATOMIC);
 748         if (err < 0) {
 749                 /* -EPERM: urb is being killed;
 750                  * -ENODEV: device got disconnected */
 751                 if (err != -EPERM && err != -ENODEV)
 752                         BT_ERR("%s urb %p failed to resubmit (%d)",
 753                                hdev->name, urb, -err);
 754                 usb_unanchor_urb(urb);
 755         }
 756 }
 757
 758 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 759 {
 760         int i, offset = 0;
 761
 762         BT_DBG("len %d mtu %d", len, mtu);
 763
 764         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 765                                         i++, offset += mtu, len -= mtu) {
 766                 urb->iso_frame_desc[i].offset = offset;
 767                 urb->iso_frame_desc[i].length = mtu;
 768         }
 769
 770         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 771                 urb->iso_frame_desc[i].offset = offset;
 772                 urb->iso_frame_desc[i].length = len;
 773                 i++;
 774         }
 775
 776         urb->number_of_packets = i;
 777 }
 778
 779 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 780 {
 781         struct btusb_data *data = hci_get_drvdata(hdev);
 782         struct urb *urb;
 783         unsigned char *buf;
 784         unsigned int pipe;
 785         int err, size;
 786
 787         BT_DBG("%s", hdev->name);
 788
 789         if (!data->isoc_rx_ep)
 790                 return -ENODEV;
 791
 792         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 793         if (!urb)
 794                 return -ENOMEM;
 795
 796         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 797                                                 BTUSB_MAX_ISOC_FRAMES;
 798
 799         buf = kmalloc(size, mem_flags);
 800         if (!buf) {
 801                 usb_free_urb(urb);
 802                 return -ENOMEM;
 803         }
 804
 805         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 806
 807         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 808                          hdev, data->isoc_rx_ep->bInterval);
 809
 810         urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
 811
 812         __fill_isoc_descriptor(urb, size,
 813                                le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 814
 815         usb_anchor_urb(urb, &data->isoc_anchor);
 816
 817         err = usb_submit_urb(urb, mem_flags);
 818         if (err < 0) {
 819                 if (err != -EPERM && err != -ENODEV)
 820                         BT_ERR("%s urb %p submission failed (%d)",
 821                                hdev->name, urb, -err);
 822                 usb_unanchor_urb(urb);
 823         }
 824
 825         usb_free_urb(urb);
 826
 827         return err;
 828 }
 829
 830 static void btusb_tx_complete(struct urb *urb)
 831 {
 832         struct sk_buff *skb = urb->context;
 833         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
 834         struct btusb_data *data = hci_get_drvdata(hdev);
 835
 836         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 837                urb->actual_length);
 838
 839         if (!test_bit(HCI_RUNNING, &hdev->flags))
 840                 goto done;
 841
 842         if (!urb->status)
 843                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 844         else
 845                 hdev->stat.err_tx++;
 846
 847 done:
 848         spin_lock(&data->txlock);
 849         data->tx_in_flight--;
 850         spin_unlock(&data->txlock);
 851
 852         kfree(urb->setup_packet);
 853
 854         kfree_skb(skb);
 855 }
 856
 857 static void btusb_isoc_tx_complete(struct urb *urb)
 858 {
 859         struct sk_buff *skb = urb->context;
 860         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
 861
 862         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 863                urb->actual_length);
 864
 865         if (!test_bit(HCI_RUNNING, &hdev->flags))
 866                 goto done;
 867
 868         if (!urb->status)
 869                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 870         else
 871                 hdev->stat.err_tx++;
 872
 873 done:
 874         kfree(urb->setup_packet);
 875
 876         kfree_skb(skb);
 877 }
 878
 879 static int btusb_open(struct hci_dev *hdev)
 880 {
 881         struct btusb_data *data = hci_get_drvdata(hdev);
 882         int err;
 883
 884         BT_DBG("%s", hdev->name);
 885
 886         err = usb_autopm_get_interface(data->intf);
 887         if (err < 0)
 888                 return err;
 889
 890         data->intf->needs_remote_wakeup = 1;
 891
 892         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 893                 goto done;
 894
 895         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 896                 goto done;
 897
 898         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 899         if (err < 0)
 900                 goto failed;
 901
 902         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 903         if (err < 0) {
 904                 usb_kill_anchored_urbs(&data->intr_anchor);
 905                 goto failed;
 906         }
 907
 908         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 909         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 910
 911 done:
 912         usb_autopm_put_interface(data->intf);
 913         return 0;
 914
 915 failed:
 916         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 917         clear_bit(HCI_RUNNING, &hdev->flags);
 918         usb_autopm_put_interface(data->intf);
 919         return err;
 920 }
 921
 922 static void btusb_stop_traffic(struct btusb_data *data)
 923 {
 924         usb_kill_anchored_urbs(&data->intr_anchor);
 925         usb_kill_anchored_urbs(&data->bulk_anchor);
 926         usb_kill_anchored_urbs(&data->isoc_anchor);
 927 }
 928
 929 static int btusb_close(struct hci_dev *hdev)
 930 {
 931         struct btusb_data *data = hci_get_drvdata(hdev);
 932         int err;
 933
 934         BT_DBG("%s", hdev->name);
 935
 936         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 937                 return 0;
 938
 939         cancel_work_sync(&data->work);
 940         cancel_work_sync(&data->waker);
 941
 942         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 943         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 944         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 945
 946         btusb_stop_traffic(data);
 947         btusb_free_frags(data);
 948
 949         err = usb_autopm_get_interface(data->intf);
 950         if (err < 0)
 951                 goto failed;
 952
 953         data->intf->needs_remote_wakeup = 0;
 954         usb_autopm_put_interface(data->intf);
 955
 956 failed:
 957         usb_scuttle_anchored_urbs(&data->deferred);
 958         return 0;
 959 }
 960
 961 static int btusb_flush(struct hci_dev *hdev)
 962 {
 963         struct btusb_data *data = hci_get_drvdata(hdev);
 964
 965         BT_DBG("%s", hdev->name);
 966
 967         usb_kill_anchored_urbs(&data->tx_anchor);
 968         btusb_free_frags(data);
 969
 970         return 0;
 971 }
 972
 973 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
 974 {
 975         struct btusb_data *data = hci_get_drvdata(hdev);
 976         struct usb_ctrlrequest *dr;
 977         struct urb *urb;
 978         unsigned int pipe;
 979
 980         urb = usb_alloc_urb(0, GFP_KERNEL);
 981         if (!urb)
 982                 return ERR_PTR(-ENOMEM);
 983
 984         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
 985         if (!dr) {
 986                 usb_free_urb(urb);
 987                 return ERR_PTR(-ENOMEM);
 988         }
 989
 990         dr->bRequestType = data->cmdreq_type;
 991         dr->bRequest     = data->cmdreq;
 992         dr->wIndex       = 0;
 993         dr->wValue       = 0;
 994         dr->wLength      = __cpu_to_le16(skb->len);
 995
 996         pipe = usb_sndctrlpipe(data->udev, 0x00);
 997
 998         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
 999                              skb->data, skb->len, btusb_tx_complete, skb);
1000
1001         skb->dev = (void *)hdev;
1002
1003         return urb;
1004 }
1005
1006 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
1007 {
1008         struct btusb_data *data = hci_get_drvdata(hdev);
1009         struct urb *urb;
1010         unsigned int pipe;
1011
1012         if (!data->bulk_tx_ep)
1013                 return ERR_PTR(-ENODEV);
1014
1015         urb = usb_alloc_urb(0, GFP_KERNEL);
1016         if (!urb)
1017                 return ERR_PTR(-ENOMEM);
1018
1019         pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1020
1021         usb_fill_bulk_urb(urb, data->udev, pipe,
1022                           skb->data, skb->len, btusb_tx_complete, skb);
1023
1024         skb->dev = (void *)hdev;
1025
1026         return urb;
1027 }
1028
1029 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1030 {
1031         struct btusb_data *data = hci_get_drvdata(hdev);
1032         struct urb *urb;
1033         unsigned int pipe;
1034
1035         if (!data->isoc_tx_ep)
1036                 return ERR_PTR(-ENODEV);
1037
1038         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1039         if (!urb)
1040                 return ERR_PTR(-ENOMEM);
1041
1042         pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1043
1044         usb_fill_int_urb(urb, data->udev, pipe,
1045                          skb->data, skb->len, btusb_isoc_tx_complete,
1046                          skb, data->isoc_tx_ep->bInterval);
1047
1048         urb->transfer_flags  = URB_ISO_ASAP;
1049
1050         __fill_isoc_descriptor(urb, skb->len,
1051                                le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1052
1053         skb->dev = (void *)hdev;
1054
1055         return urb;
1056 }
1057
1058 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1059 {
1060         struct btusb_data *data = hci_get_drvdata(hdev);
1061         int err;
1062
1063         usb_anchor_urb(urb, &data->tx_anchor);
1064
1065         err = usb_submit_urb(urb, GFP_KERNEL);
1066         if (err < 0) {
1067                 if (err != -EPERM && err != -ENODEV)
1068                         BT_ERR("%s urb %p submission failed (%d)",
1069                                hdev->name, urb, -err);
1070                 kfree(urb->setup_packet);
1071                 usb_unanchor_urb(urb);
1072         } else {
1073                 usb_mark_last_busy(data->udev);
1074         }
1075
1076         usb_free_urb(urb);
1077         return err;
1078 }
1079
1080 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1081 {
1082         struct btusb_data *data = hci_get_drvdata(hdev);
1083         unsigned long flags;
1084         bool suspending;
1085
1086         spin_lock_irqsave(&data->txlock, flags);
1087         suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1088         if (!suspending)
1089                 data->tx_in_flight++;
1090         spin_unlock_irqrestore(&data->txlock, flags);
1091
1092         if (!suspending)
1093                 return submit_tx_urb(hdev, urb);
1094
1095         usb_anchor_urb(urb, &data->deferred);
1096         schedule_work(&data->waker);
1097
1098         usb_free_urb(urb);
1099         return 0;
1100 }
1101
1102 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1103 {
1104         struct urb *urb;
1105
1106         BT_DBG("%s", hdev->name);
1107
1108         if (!test_bit(HCI_RUNNING, &hdev->flags))
1109                 return -EBUSY;
1110
1111         switch (bt_cb(skb)->pkt_type) {
1112         case HCI_COMMAND_PKT:
1113                 urb = alloc_ctrl_urb(hdev, skb);
1114                 if (IS_ERR(urb))
1115                         return PTR_ERR(urb);
1116
1117                 hdev->stat.cmd_tx++;
1118                 return submit_or_queue_tx_urb(hdev, urb);
1119
1120         case HCI_ACLDATA_PKT:
1121                 urb = alloc_bulk_urb(hdev, skb);
1122                 if (IS_ERR(urb))
1123                         return PTR_ERR(urb);
1124
1125                 hdev->stat.acl_tx++;
1126                 return submit_or_queue_tx_urb(hdev, urb);
1127
1128         case HCI_SCODATA_PKT:
1129                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1130                         return -ENODEV;
1131
1132                 urb = alloc_isoc_urb(hdev, skb);
1133                 if (IS_ERR(urb))
1134                         return PTR_ERR(urb);
1135
1136                 hdev->stat.sco_tx++;
1137                 return submit_tx_urb(hdev, urb);
1138         }
1139
1140         return -EILSEQ;
1141 }
1142
1143 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1144 {
1145         struct btusb_data *data = hci_get_drvdata(hdev);
1146
1147         BT_DBG("%s evt %d", hdev->name, evt);
1148
1149         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1150                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1151                 schedule_work(&data->work);
1152         }
1153 }
1154
1155 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1156 {
1157         struct btusb_data *data = hci_get_drvdata(hdev);
1158         struct usb_interface *intf = data->isoc;
1159         struct usb_endpoint_descriptor *ep_desc;
1160         int i, err;
1161
1162         if (!data->isoc)
1163                 return -ENODEV;
1164
1165         err = usb_set_interface(data->udev, 1, altsetting);
1166         if (err < 0) {
1167                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
1168                 return err;
1169         }
1170
1171         data->isoc_altsetting = altsetting;
1172
1173         data->isoc_tx_ep = NULL;
1174         data->isoc_rx_ep = NULL;
1175
1176         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1177                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1178
1179                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1180                         data->isoc_tx_ep = ep_desc;
1181                         continue;
1182                 }
1183
1184                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1185                         data->isoc_rx_ep = ep_desc;
1186                         continue;
1187                 }
1188         }
1189
1190         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1191                 BT_ERR("%s invalid SCO descriptors", hdev->name);
1192                 return -ENODEV;
1193         }
1194
1195         return 0;
1196 }
1197
1198 static void btusb_work(struct work_struct *work)
1199 {
1200         struct btusb_data *data = container_of(work, struct btusb_data, work);
1201         struct hci_dev *hdev = data->hdev;
1202         int new_alts;
1203         int err;
1204
1205         if (data->sco_num > 0) {
1206                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1207                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1208                         if (err < 0) {
1209                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1210                                 usb_kill_anchored_urbs(&data->isoc_anchor);
1211                                 return;
1212                         }
1213
1214                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1215                 }
1216
1217                 if (hdev->voice_setting & 0x0020) {
1218                         static const int alts[3] = { 2, 4, 5 };
1219
1220                         new_alts = alts[data->sco_num - 1];
1221                 } else {
1222                         new_alts = data->sco_num;
1223                 }
1224
1225                 if (data->isoc_altsetting != new_alts) {
1226                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1227                         usb_kill_anchored_urbs(&data->isoc_anchor);
1228
1229                         if (__set_isoc_interface(hdev, new_alts) < 0)
1230                                 return;
1231                 }
1232
1233                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1234                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1235                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1236                         else
1237                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1238                 }
1239         } else {
1240                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1241                 usb_kill_anchored_urbs(&data->isoc_anchor);
1242
1243                 __set_isoc_interface(hdev, 0);
1244                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1245                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1246         }
1247 }
1248
1249 static void btusb_waker(struct work_struct *work)
1250 {
1251         struct btusb_data *data = container_of(work, struct btusb_data, waker);
1252         int err;
1253
1254         err = usb_autopm_get_interface(data->intf);
1255         if (err < 0)
1256                 return;
1257
1258         usb_autopm_put_interface(data->intf);
1259 }
1260
1261 static int btusb_setup_bcm92035(struct hci_dev *hdev)
1262 {
1263         struct sk_buff *skb;
1264         u8 val = 0x00;
1265
1266         BT_DBG("%s", hdev->name);
1267
1268         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1269         if (IS_ERR(skb))
1270                 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
1271         else
1272                 kfree_skb(skb);
1273
1274         return 0;
1275 }
1276
1277 static int btusb_setup_csr(struct hci_dev *hdev)
1278 {
1279         struct hci_rp_read_local_version *rp;
1280         struct sk_buff *skb;
1281         int ret;
1282
1283         BT_DBG("%s", hdev->name);
1284
1285         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1286                              HCI_INIT_TIMEOUT);
1287         if (IS_ERR(skb)) {
1288                 BT_ERR("Reading local version failed (%ld)", -PTR_ERR(skb));
1289                 return -PTR_ERR(skb);
1290         }
1291
1292         rp = (struct hci_rp_read_local_version *)skb->data;
1293
1294         if (!rp->status) {
1295                 if (le16_to_cpu(rp->manufacturer) != 10) {
1296                         /* Clear the reset quirk since this is not an actual
1297                          * early Bluetooth 1.1 device from CSR.
1298                          */
1299                         clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1300
1301                         /* These fake CSR controllers have all a broken
1302                          * stored link key handling and so just disable it.
1303                          */
1304                         set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY,
1305                                 &hdev->quirks);
1306                 }
1307         }
1308
1309         ret = -bt_to_errno(rp->status);
1310
1311         kfree_skb(skb);
1312
1313         return ret;
1314 }
1315
1316 struct intel_version {
1317         u8 status;
1318         u8 hw_platform;
1319         u8 hw_variant;
1320         u8 hw_revision;
1321         u8 fw_variant;
1322         u8 fw_revision;
1323         u8 fw_build_num;
1324         u8 fw_build_ww;
1325         u8 fw_build_yy;
1326         u8 fw_patch_num;
1327 } __packed;
1328
1329 struct intel_boot_params {
1330         __u8     status;
1331         __u8     otp_format;
1332         __u8     otp_content;
1333         __u8     otp_patch;
1334         __le16   dev_revid;
1335         __u8     secure_boot;
1336         __u8     key_from_hdr;
1337         __u8     key_type;
1338         __u8     otp_lock;
1339         __u8     api_lock;
1340         __u8     debug_lock;
1341         bdaddr_t otp_bdaddr;
1342         __u8     min_fw_build_nn;
1343         __u8     min_fw_build_cw;
1344         __u8     min_fw_build_yy;
1345         __u8     limited_cce;
1346         __u8     unlocked_state;
1347 } __packed;
1348
1349 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1350                                                        struct intel_version *ver)
1351 {
1352         const struct firmware *fw;
1353         char fwname[64];
1354         int ret;
1355
1356         snprintf(fwname, sizeof(fwname),
1357                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1358                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
1359                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1360                  ver->fw_build_ww, ver->fw_build_yy);
1361
1362         ret = request_firmware(&fw, fwname, &hdev->dev);
1363         if (ret < 0) {
1364                 if (ret == -EINVAL) {
1365                         BT_ERR("%s Intel firmware file request failed (%d)",
1366                                hdev->name, ret);
1367                         return NULL;
1368                 }
1369
1370                 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1371                        hdev->name, fwname, ret);
1372
1373                 /* If the correct firmware patch file is not found, use the
1374                  * default firmware patch file instead
1375                  */
1376                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1377                          ver->hw_platform, ver->hw_variant);
1378                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1379                         BT_ERR("%s failed to open default Intel fw file: %s",
1380                                hdev->name, fwname);
1381                         return NULL;
1382                 }
1383         }
1384
1385         BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1386
1387         return fw;
1388 }
1389
1390 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1391                                       const struct firmware *fw,
1392                                       const u8 **fw_ptr, int *disable_patch)
1393 {
1394         struct sk_buff *skb;
1395         struct hci_command_hdr *cmd;
1396         const u8 *cmd_param;
1397         struct hci_event_hdr *evt = NULL;
1398         const u8 *evt_param = NULL;
1399         int remain = fw->size - (*fw_ptr - fw->data);
1400
1401         /* The first byte indicates the types of the patch command or event.
1402          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1403          * in the current firmware buffer doesn't start with 0x01 or
1404          * the size of remain buffer is smaller than HCI command header,
1405          * the firmware file is corrupted and it should stop the patching
1406          * process.
1407          */
1408         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1409                 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1410                 return -EINVAL;
1411         }
1412         (*fw_ptr)++;
1413         remain--;
1414
1415         cmd = (struct hci_command_hdr *)(*fw_ptr);
1416         *fw_ptr += sizeof(*cmd);
1417         remain -= sizeof(*cmd);
1418
1419         /* Ensure that the remain firmware data is long enough than the length
1420          * of command parameter. If not, the firmware file is corrupted.
1421          */
1422         if (remain < cmd->plen) {
1423                 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1424                 return -EFAULT;
1425         }
1426
1427         /* If there is a command that loads a patch in the firmware
1428          * file, then enable the patch upon success, otherwise just
1429          * disable the manufacturer mode, for example patch activation
1430          * is not required when the default firmware patch file is used
1431          * because there are no patch data to load.
1432          */
1433         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1434                 *disable_patch = 0;
1435
1436         cmd_param = *fw_ptr;
1437         *fw_ptr += cmd->plen;
1438         remain -= cmd->plen;
1439
1440         /* This reads the expected events when the above command is sent to the
1441          * device. Some vendor commands expects more than one events, for
1442          * example command status event followed by vendor specific event.
1443          * For this case, it only keeps the last expected event. so the command
1444          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1445          * last expected event.
1446          */
1447         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1448                 (*fw_ptr)++;
1449                 remain--;
1450
1451                 evt = (struct hci_event_hdr *)(*fw_ptr);
1452                 *fw_ptr += sizeof(*evt);
1453                 remain -= sizeof(*evt);
1454
1455                 if (remain < evt->plen) {
1456                         BT_ERR("%s Intel fw corrupted: invalid evt len",
1457                                hdev->name);
1458                         return -EFAULT;
1459                 }
1460
1461                 evt_param = *fw_ptr;
1462                 *fw_ptr += evt->plen;
1463                 remain -= evt->plen;
1464         }
1465
1466         /* Every HCI commands in the firmware file has its correspond event.
1467          * If event is not found or remain is smaller than zero, the firmware
1468          * file is corrupted.
1469          */
1470         if (!evt || !evt_param || remain < 0) {
1471                 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1472                 return -EFAULT;
1473         }
1474
1475         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1476                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1477         if (IS_ERR(skb)) {
1478                 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1479                        hdev->name, cmd->opcode, PTR_ERR(skb));
1480                 return PTR_ERR(skb);
1481         }
1482
1483         /* It ensures that the returned event matches the event data read from
1484          * the firmware file. At fist, it checks the length and then
1485          * the contents of the event.
1486          */
1487         if (skb->len != evt->plen) {
1488                 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1489                        le16_to_cpu(cmd->opcode));
1490                 kfree_skb(skb);
1491                 return -EFAULT;
1492         }
1493
1494         if (memcmp(skb->data, evt_param, evt->plen)) {
1495                 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1496                        hdev->name, le16_to_cpu(cmd->opcode));
1497                 kfree_skb(skb);
1498                 return -EFAULT;
1499         }
1500         kfree_skb(skb);
1501
1502         return 0;
1503 }
1504
1505 #define BDADDR_INTEL (&(bdaddr_t) {{0x00, 0x8b, 0x9e, 0x19, 0x03, 0x00}})
1506
1507 static int btusb_check_bdaddr_intel(struct hci_dev *hdev)
1508 {
1509         struct sk_buff *skb;
1510         struct hci_rp_read_bd_addr *rp;
1511
1512         skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
1513                              HCI_INIT_TIMEOUT);
1514         if (IS_ERR(skb)) {
1515                 BT_ERR("%s reading Intel device address failed (%ld)",
1516                        hdev->name, PTR_ERR(skb));
1517                 return PTR_ERR(skb);
1518         }
1519
1520         if (skb->len != sizeof(*rp)) {
1521                 BT_ERR("%s Intel device address length mismatch", hdev->name);
1522                 kfree_skb(skb);
1523                 return -EIO;
1524         }
1525
1526         rp = (struct hci_rp_read_bd_addr *)skb->data;
1527         if (rp->status) {
1528                 BT_ERR("%s Intel device address result failed (%02x)",
1529                        hdev->name, rp->status);
1530                 kfree_skb(skb);
1531                 return -bt_to_errno(rp->status);
1532         }
1533
1534         /* For some Intel based controllers, the default Bluetooth device
1535          * address 00:03:19:9E:8B:00 can be found. These controllers are
1536          * fully operational, but have the danger of duplicate addresses
1537          * and that in turn can cause problems with Bluetooth operation.
1538          */
1539         if (!bacmp(&rp->bdaddr, BDADDR_INTEL)) {
1540                 BT_ERR("%s found Intel default device address (%pMR)",
1541                        hdev->name, &rp->bdaddr);
1542                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
1543         }
1544
1545         kfree_skb(skb);
1546
1547         return 0;
1548 }
1549
1550 static int btusb_setup_intel(struct hci_dev *hdev)
1551 {
1552         struct sk_buff *skb;
1553         const struct firmware *fw;
1554         const u8 *fw_ptr;
1555         int disable_patch;
1556         struct intel_version *ver;
1557
1558         const u8 mfg_enable[] = { 0x01, 0x00 };
1559         const u8 mfg_disable[] = { 0x00, 0x00 };
1560         const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
1561         const u8 mfg_reset_activate[] = { 0x00, 0x02 };
1562
1563         BT_DBG("%s", hdev->name);
1564
1565         /* The controller has a bug with the first HCI command sent to it
1566          * returning number of completed commands as zero. This would stall the
1567          * command processing in the Bluetooth core.
1568          *
1569          * As a workaround, send HCI Reset command first which will reset the
1570          * number of completed commands and allow normal command processing
1571          * from now on.
1572          */
1573         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1574         if (IS_ERR(skb)) {
1575                 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1576                        hdev->name, PTR_ERR(skb));
1577                 return PTR_ERR(skb);
1578         }
1579         kfree_skb(skb);
1580
1581         /* Read Intel specific controller version first to allow selection of
1582          * which firmware file to load.
1583          *
1584          * The returned information are hardware variant and revision plus
1585          * firmware variant, revision and build number.
1586          */
1587         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1588         if (IS_ERR(skb)) {
1589                 BT_ERR("%s reading Intel fw version command failed (%ld)",
1590                        hdev->name, PTR_ERR(skb));
1591                 return PTR_ERR(skb);
1592         }
1593
1594         if (skb->len != sizeof(*ver)) {
1595                 BT_ERR("%s Intel version event length mismatch", hdev->name);
1596                 kfree_skb(skb);
1597                 return -EIO;
1598         }
1599
1600         ver = (struct intel_version *)skb->data;
1601         if (ver->status) {
1602                 BT_ERR("%s Intel fw version event failed (%02x)", hdev->name,
1603                        ver->status);
1604                 kfree_skb(skb);
1605                 return -bt_to_errno(ver->status);
1606         }
1607
1608         BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1609                 hdev->name, ver->hw_platform, ver->hw_variant,
1610                 ver->hw_revision, ver->fw_variant,  ver->fw_revision,
1611                 ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
1612                 ver->fw_patch_num);
1613
1614         /* fw_patch_num indicates the version of patch the device currently
1615          * have. If there is no patch data in the device, it is always 0x00.
1616          * So, if it is other than 0x00, no need to patch the deivce again.
1617          */
1618         if (ver->fw_patch_num) {
1619                 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1620                         hdev->name, ver->fw_patch_num);
1621                 kfree_skb(skb);
1622                 btusb_check_bdaddr_intel(hdev);
1623                 return 0;
1624         }
1625
1626         /* Opens the firmware patch file based on the firmware version read
1627          * from the controller. If it fails to open the matching firmware
1628          * patch file, it tries to open the default firmware patch file.
1629          * If no patch file is found, allow the device to operate without
1630          * a patch.
1631          */
1632         fw = btusb_setup_intel_get_fw(hdev, ver);
1633         if (!fw) {
1634                 kfree_skb(skb);
1635                 btusb_check_bdaddr_intel(hdev);
1636                 return 0;
1637         }
1638         fw_ptr = fw->data;
1639
1640         /* This Intel specific command enables the manufacturer mode of the
1641          * controller.
1642          *
1643          * Only while this mode is enabled, the driver can download the
1644          * firmware patch data and configuration parameters.
1645          */
1646         skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
1647         if (IS_ERR(skb)) {
1648                 BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
1649                        hdev->name, PTR_ERR(skb));
1650                 release_firmware(fw);
1651                 return PTR_ERR(skb);
1652         }
1653
1654         if (skb->data[0]) {
1655                 u8 evt_status = skb->data[0];
1656
1657                 BT_ERR("%s enable Intel manufacturer mode event failed (%02x)",
1658                        hdev->name, evt_status);
1659                 kfree_skb(skb);
1660                 release_firmware(fw);
1661                 return -bt_to_errno(evt_status);
1662         }
1663         kfree_skb(skb);
1664
1665         disable_patch = 1;
1666
1667         /* The firmware data file consists of list of Intel specific HCI
1668          * commands and its expected events. The first byte indicates the
1669          * type of the message, either HCI command or HCI event.
1670          *
1671          * It reads the command and its expected event from the firmware file,
1672          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1673          * the returned event is compared with the event read from the firmware
1674          * file and it will continue until all the messages are downloaded to
1675          * the controller.
1676          *
1677          * Once the firmware patching is completed successfully,
1678          * the manufacturer mode is disabled with reset and activating the
1679          * downloaded patch.
1680          *
1681          * If the firmware patching fails, the manufacturer mode is
1682          * disabled with reset and deactivating the patch.
1683          *
1684          * If the default patch file is used, no reset is done when disabling
1685          * the manufacturer.
1686          */
1687         while (fw->size > fw_ptr - fw->data) {
1688                 int ret;
1689
1690                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1691                                                  &disable_patch);
1692                 if (ret < 0)
1693                         goto exit_mfg_deactivate;
1694         }
1695
1696         release_firmware(fw);
1697
1698         if (disable_patch)
1699                 goto exit_mfg_disable;
1700
1701         /* Patching completed successfully and disable the manufacturer mode
1702          * with reset and activate the downloaded firmware patches.
1703          */
1704         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
1705                              mfg_reset_activate, HCI_INIT_TIMEOUT);
1706         if (IS_ERR(skb)) {
1707                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1708                        hdev->name, PTR_ERR(skb));
1709                 return PTR_ERR(skb);
1710         }
1711         kfree_skb(skb);
1712
1713         BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1714                 hdev->name);
1715
1716         btusb_check_bdaddr_intel(hdev);
1717         return 0;
1718
1719 exit_mfg_disable:
1720         /* Disable the manufacturer mode without reset */
1721         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
1722                              HCI_INIT_TIMEOUT);
1723         if (IS_ERR(skb)) {
1724                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1725                        hdev->name, PTR_ERR(skb));
1726                 return PTR_ERR(skb);
1727         }
1728         kfree_skb(skb);
1729
1730         BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1731
1732         btusb_check_bdaddr_intel(hdev);
1733         return 0;
1734
1735 exit_mfg_deactivate:
1736         release_firmware(fw);
1737
1738         /* Patching failed. Disable the manufacturer mode with reset and
1739          * deactivate the downloaded firmware patches.
1740          */
1741         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
1742                              mfg_reset_deactivate, HCI_INIT_TIMEOUT);
1743         if (IS_ERR(skb)) {
1744                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1745                        hdev->name, PTR_ERR(skb));
1746                 return PTR_ERR(skb);
1747         }
1748         kfree_skb(skb);
1749
1750         BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1751                 hdev->name);
1752
1753         btusb_check_bdaddr_intel(hdev);
1754         return 0;
1755 }
1756
1757 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
1758 {
1759         struct sk_buff *skb;
1760         struct hci_event_hdr *hdr;
1761         struct hci_ev_cmd_complete *evt;
1762
1763         skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_ATOMIC);
1764         if (!skb)
1765                 return -ENOMEM;
1766
1767         hdr = (struct hci_event_hdr *)skb_put(skb, sizeof(*hdr));
1768         hdr->evt = HCI_EV_CMD_COMPLETE;
1769         hdr->plen = sizeof(*evt) + 1;
1770
1771         evt = (struct hci_ev_cmd_complete *)skb_put(skb, sizeof(*evt));
1772         evt->ncmd = 0x01;
1773         evt->opcode = cpu_to_le16(opcode);
1774
1775         *skb_put(skb, 1) = 0x00;
1776
1777         bt_cb(skb)->pkt_type = HCI_EVENT_PKT;
1778
1779         return hci_recv_frame(hdev, skb);
1780 }
1781
1782 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
1783                                  int count)
1784 {
1785         /* When the device is in bootloader mode, then it can send
1786          * events via the bulk endpoint. These events are treated the
1787          * same way as the ones received from the interrupt endpoint.
1788          */
1789         if (test_bit(BTUSB_BOOTLOADER, &data->flags))
1790                 return btusb_recv_intr(data, buffer, count);
1791
1792         return btusb_recv_bulk(data, buffer, count);
1793 }
1794
1795 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
1796 {
1797         struct btusb_data *data = hci_get_drvdata(hdev);
1798
1799         if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1800                 struct hci_event_hdr *hdr = (void *)skb->data;
1801
1802                 /* When the firmware loading completes the device sends
1803                  * out a vendor specific event indicating the result of
1804                  * the firmware loading.
1805                  */
1806                 if (skb->len == 7 && hdr->evt == 0xff && hdr->plen == 0x05 &&
1807                     skb->data[2] == 0x06) {
1808                         if (skb->data[3] != 0x00)
1809                                 test_bit(BTUSB_FIRMWARE_FAILED, &data->flags);
1810
1811                         if (test_and_clear_bit(BTUSB_DOWNLOADING,
1812                                                &data->flags) &&
1813                             test_bit(BTUSB_FIRMWARE_LOADED, &data->flags)) {
1814                                 smp_mb__after_atomic();
1815                                 wake_up_bit(&data->flags, BTUSB_DOWNLOADING);
1816                         }
1817                 }
1818
1819                 /* When switching to the operational firmware the device
1820                  * sends a vendor specific event indicating that the bootup
1821                  * completed.
1822                  */
1823                 if (skb->len == 9 && hdr->evt == 0xff && hdr->plen == 0x07 &&
1824                     skb->data[2] == 0x02) {
1825                         if (test_and_clear_bit(BTUSB_BOOTING, &data->flags)) {
1826                                 smp_mb__after_atomic();
1827                                 wake_up_bit(&data->flags, BTUSB_BOOTING);
1828                         }
1829                 }
1830         }
1831
1832         return hci_recv_frame(hdev, skb);
1833 }
1834
1835 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
1836 {
1837         struct btusb_data *data = hci_get_drvdata(hdev);
1838         struct urb *urb;
1839
1840         BT_DBG("%s", hdev->name);
1841
1842         if (!test_bit(HCI_RUNNING, &hdev->flags))
1843                 return -EBUSY;
1844
1845         switch (bt_cb(skb)->pkt_type) {
1846         case HCI_COMMAND_PKT:
1847                 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1848                         struct hci_command_hdr *cmd = (void *)skb->data;
1849                         __u16 opcode = le16_to_cpu(cmd->opcode);
1850
1851                         /* When in bootloader mode and the command 0xfc09
1852                          * is received, it needs to be send down the
1853                          * bulk endpoint. So allocate a bulk URB instead.
1854                          */
1855                         if (opcode == 0xfc09)
1856                                 urb = alloc_bulk_urb(hdev, skb);
1857                         else
1858                                 urb = alloc_ctrl_urb(hdev, skb);
1859
1860                         /* When the 0xfc01 command is issued to boot into
1861                          * the operational firmware, it will actually not
1862                          * send a command complete event. To keep the flow
1863                          * control working inject that event here.
1864                          */
1865                         if (opcode == 0xfc01)
1866                                 inject_cmd_complete(hdev, opcode);
1867                 } else {
1868                         urb = alloc_ctrl_urb(hdev, skb);
1869                 }
1870                 if (IS_ERR(urb))
1871                         return PTR_ERR(urb);
1872
1873                 hdev->stat.cmd_tx++;
1874                 return submit_or_queue_tx_urb(hdev, urb);
1875
1876         case HCI_ACLDATA_PKT:
1877                 urb = alloc_bulk_urb(hdev, skb);
1878                 if (IS_ERR(urb))
1879                         return PTR_ERR(urb);
1880
1881                 hdev->stat.acl_tx++;
1882                 return submit_or_queue_tx_urb(hdev, urb);
1883
1884         case HCI_SCODATA_PKT:
1885                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1886                         return -ENODEV;
1887
1888                 urb = alloc_isoc_urb(hdev, skb);
1889                 if (IS_ERR(urb))
1890                         return PTR_ERR(urb);
1891
1892                 hdev->stat.sco_tx++;
1893                 return submit_tx_urb(hdev, urb);
1894         }
1895
1896         return -EILSEQ;
1897 }
1898
1899 static int btusb_intel_secure_send(struct hci_dev *hdev, u8 fragment_type,
1900                                    u32 plen, const void *param)
1901 {
1902         while (plen > 0) {
1903                 struct sk_buff *skb;
1904                 u8 cmd_param[253], fragment_len = (plen > 252) ? 252 : plen;
1905
1906                 cmd_param[0] = fragment_type;
1907                 memcpy(cmd_param + 1, param, fragment_len);
1908
1909                 skb = __hci_cmd_sync(hdev, 0xfc09, fragment_len + 1,
1910                                      cmd_param, HCI_INIT_TIMEOUT);
1911                 if (IS_ERR(skb))
1912                         return PTR_ERR(skb);
1913
1914                 kfree_skb(skb);
1915
1916                 plen -= fragment_len;
1917                 param += fragment_len;
1918         }
1919
1920         return 0;
1921 }
1922
1923 static void btusb_intel_version_info(struct hci_dev *hdev,
1924                                      struct intel_version *ver)
1925 {
1926         const char *variant;
1927
1928         switch (ver->fw_variant) {
1929         case 0x06:
1930                 variant = "Bootloader";
1931                 break;
1932         case 0x23:
1933                 variant = "Firmware";
1934                 break;
1935         default:
1936                 return;
1937         }
1938
1939         BT_INFO("%s: %s revision %u.%u build %u week %u %u", hdev->name,
1940                 variant, ver->fw_revision >> 4, ver->fw_revision & 0x0f,
1941                 ver->fw_build_num, ver->fw_build_ww, 2000 + ver->fw_build_yy);
1942 }
1943
1944 static int btusb_setup_intel_new(struct hci_dev *hdev)
1945 {
1946         static const u8 reset_param[] = { 0x00, 0x01, 0x00, 0x01,
1947                                           0x00, 0x08, 0x04, 0x00 };
1948         struct btusb_data *data = hci_get_drvdata(hdev);
1949         struct sk_buff *skb;
1950         struct intel_version *ver;
1951         struct intel_boot_params *params;
1952         const struct firmware *fw;
1953         const u8 *fw_ptr;
1954         char fwname[64];
1955         ktime_t calltime, delta, rettime;
1956         unsigned long long duration;
1957         int err;
1958
1959         BT_DBG("%s", hdev->name);
1960
1961         calltime = ktime_get();
1962
1963         /* Read the Intel version information to determine if the device
1964          * is in bootloader mode or if it already has operational firmware
1965          * loaded.
1966          */
1967         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1968         if (IS_ERR(skb)) {
1969                 BT_ERR("%s: Reading Intel version information failed (%ld)",
1970                        hdev->name, PTR_ERR(skb));
1971                 return PTR_ERR(skb);
1972         }
1973
1974         if (skb->len != sizeof(*ver)) {
1975                 BT_ERR("%s: Intel version event size mismatch", hdev->name);
1976                 kfree_skb(skb);
1977                 return -EILSEQ;
1978         }
1979
1980         ver = (struct intel_version *)skb->data;
1981         if (ver->status) {
1982                 BT_ERR("%s: Intel version command failure (%02x)",
1983                        hdev->name, ver->status);
1984                 err = -bt_to_errno(ver->status);
1985                 kfree_skb(skb);
1986                 return err;
1987         }
1988
1989         /* The hardware platform number has a fixed value of 0x37 and
1990          * for now only accept this single value.
1991          */
1992         if (ver->hw_platform != 0x37) {
1993                 BT_ERR("%s: Unsupported Intel hardware platform (%u)",
1994                        hdev->name, ver->hw_platform);
1995                 kfree_skb(skb);
1996                 return -EINVAL;
1997         }
1998
1999         /* At the moment only the hardware variant iBT 3.0 (LnP/SfP) is
2000          * supported by this firmware loading method. This check has been
2001          * put in place to ensure correct forward compatibility options
2002          * when newer hardware variants come along.
2003          */
2004         if (ver->hw_variant != 0x0b) {
2005                 BT_ERR("%s: Unsupported Intel hardware variant (%u)",
2006                        hdev->name, ver->hw_variant);
2007                 kfree_skb(skb);
2008                 return -EINVAL;
2009         }
2010
2011         btusb_intel_version_info(hdev, ver);
2012
2013         /* The firmware variant determines if the device is in bootloader
2014          * mode or is running operational firmware. The value 0x06 identifies
2015          * the bootloader and the value 0x23 identifies the operational
2016          * firmware.
2017          *
2018          * When the operational firmware is already present, then only
2019          * the check for valid Bluetooth device address is needed. This
2020          * determines if the device will be added as configured or
2021          * unconfigured controller.
2022          *
2023          * It is not possible to use the Secure Boot Parameters in this
2024          * case since that command is only available in bootloader mode.
2025          */
2026         if (ver->fw_variant == 0x23) {
2027                 kfree_skb(skb);
2028                 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2029                 btusb_check_bdaddr_intel(hdev);
2030                 return 0;
2031         }
2032
2033         /* If the device is not in bootloader mode, then the only possible
2034          * choice is to return an error and abort the device initialization.
2035          */
2036         if (ver->fw_variant != 0x06) {
2037                 BT_ERR("%s: Unsupported Intel firmware variant (%u)",
2038                        hdev->name, ver->fw_variant);
2039                 kfree_skb(skb);
2040                 return -ENODEV;
2041         }
2042
2043         kfree_skb(skb);
2044
2045         /* Read the secure boot parameters to identify the operating
2046          * details of the bootloader.
2047          */
2048         skb = __hci_cmd_sync(hdev, 0xfc0d, 0, NULL, HCI_INIT_TIMEOUT);
2049         if (IS_ERR(skb)) {
2050                 BT_ERR("%s: Reading Intel boot parameters failed (%ld)",
2051                        hdev->name, PTR_ERR(skb));
2052                 return PTR_ERR(skb);
2053         }
2054
2055         if (skb->len != sizeof(*params)) {
2056                 BT_ERR("%s: Intel boot parameters size mismatch", hdev->name);
2057                 kfree_skb(skb);
2058                 return -EILSEQ;
2059         }
2060
2061         params = (struct intel_boot_params *)skb->data;
2062         if (params->status) {
2063                 BT_ERR("%s: Intel boot parameters command failure (%02x)",
2064                        hdev->name, params->status);
2065                 err = -bt_to_errno(params->status);
2066                 kfree_skb(skb);
2067                 return err;
2068         }
2069
2070         BT_INFO("%s: Device revision is %u", hdev->name,
2071                 le16_to_cpu(params->dev_revid));
2072
2073         BT_INFO("%s: Secure boot is %s", hdev->name,
2074                 params->secure_boot ? "enabled" : "disabled");
2075
2076         BT_INFO("%s: Minimum firmware build %u week %u %u", hdev->name,
2077                 params->min_fw_build_nn, params->min_fw_build_cw,
2078                 2000 + params->min_fw_build_yy);
2079
2080         /* It is required that every single firmware fragment is acknowledged
2081          * with a command complete event. If the boot parameters indicate
2082          * that this bootloader does not send them, then abort the setup.
2083          */
2084         if (params->limited_cce != 0x00) {
2085                 BT_ERR("%s: Unsupported Intel firmware loading method (%u)",
2086                        hdev->name, params->limited_cce);
2087                 kfree_skb(skb);
2088                 return -EINVAL;
2089         }
2090
2091         /* If the OTP has no valid Bluetooth device address, then there will
2092          * also be no valid address for the operational firmware.
2093          */
2094         if (!bacmp(&params->otp_bdaddr, BDADDR_ANY)) {
2095                 BT_INFO("%s: No device address configured", hdev->name);
2096                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2097         }
2098
2099         /* With this Intel bootloader only the hardware variant and device
2100          * revision information are used to select the right firmware.
2101          *
2102          * Currently this bootloader support is limited to hardware variant
2103          * iBT 3.0 (LnP/SfP) which is identified by the value 11 (0x0b).
2104          */
2105         snprintf(fwname, sizeof(fwname), "intel/ibt-11-%u.sfi",
2106                  le16_to_cpu(params->dev_revid));
2107
2108         err = request_firmware(&fw, fwname, &hdev->dev);
2109         if (err < 0) {
2110                 BT_ERR("%s: Failed to load Intel firmware file (%d)",
2111                        hdev->name, err);
2112                 kfree_skb(skb);
2113                 return err;
2114         }
2115
2116         BT_INFO("%s: Found device firmware: %s", hdev->name, fwname);
2117
2118         kfree_skb(skb);
2119
2120         if (fw->size < 644) {
2121                 BT_ERR("%s: Invalid size of firmware file (%zu)",
2122                        hdev->name, fw->size);
2123                 err = -EBADF;
2124                 goto done;
2125         }
2126
2127         set_bit(BTUSB_DOWNLOADING, &data->flags);
2128
2129         /* Start the firmware download transaction with the Init fragment
2130          * represented by the 128 bytes of CSS header.
2131          */
2132         err = btusb_intel_secure_send(hdev, 0x00, 128, fw->data);
2133         if (err < 0) {
2134                 BT_ERR("%s: Failed to send firmware header (%d)",
2135                        hdev->name, err);
2136                 goto done;
2137         }
2138
2139         /* Send the 256 bytes of public key information from the firmware
2140          * as the PKey fragment.
2141          */
2142         err = btusb_intel_secure_send(hdev, 0x03, 256, fw->data + 128);
2143         if (err < 0) {
2144                 BT_ERR("%s: Failed to send firmware public key (%d)",
2145                        hdev->name, err);
2146                 goto done;
2147         }
2148
2149         /* Send the 256 bytes of signature information from the firmware
2150          * as the Sign fragment.
2151          */
2152         err = btusb_intel_secure_send(hdev, 0x02, 256, fw->data + 388);
2153         if (err < 0) {
2154                 BT_ERR("%s: Failed to send firmware signature (%d)",
2155                        hdev->name, err);
2156                 goto done;
2157         }
2158
2159         fw_ptr = fw->data + 644;
2160
2161         while (fw_ptr - fw->data < fw->size) {
2162                 struct hci_command_hdr *cmd = (void *)fw_ptr;
2163                 u8 cmd_len;
2164
2165                 cmd_len = sizeof(*cmd) + cmd->plen;
2166
2167                 /* Send each command from the firmware data buffer as
2168                  * a single Data fragment.
2169                  */
2170                 err = btusb_intel_secure_send(hdev, 0x01, cmd_len, fw_ptr);
2171                 if (err < 0) {
2172                         BT_ERR("%s: Failed to send firmware data (%d)",
2173                                hdev->name, err);
2174                         goto done;
2175                 }
2176
2177                 fw_ptr += cmd_len;
2178         }
2179
2180         set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2181
2182         BT_INFO("%s: Waiting for firmware download to complete", hdev->name);
2183
2184         /* Before switching the device into operational mode and with that
2185          * booting the loaded firmware, wait for the bootloader notification
2186          * that all fragments have been successfully received.
2187          *
2188          * When the event processing receives the notification, then the
2189          * BTUSB_DOWNLOADING flag will be cleared.
2190          *
2191          * The firmware loading should not take longer than 5 seconds
2192          * and thus just timeout if that happens and fail the setup
2193          * of this device.
2194          */
2195         err = btusb_wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
2196                                         msecs_to_jiffies(5000),
2197                                         TASK_INTERRUPTIBLE);
2198         if (err == 1) {
2199                 BT_ERR("%s: Firmware loading interrupted", hdev->name);
2200                 err = -EINTR;
2201                 goto done;
2202         }
2203
2204         if (err) {
2205                 BT_ERR("%s: Firmware loading timeout", hdev->name);
2206                 err = -ETIMEDOUT;
2207                 goto done;
2208         }
2209
2210         if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) {
2211                 BT_ERR("%s: Firmware loading failed", hdev->name);
2212                 err = -ENOEXEC;
2213                 goto done;
2214         }
2215
2216         rettime = ktime_get();
2217         delta = ktime_sub(rettime, calltime);
2218         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2219
2220         BT_INFO("%s: Firmware loaded in %llu usecs", hdev->name, duration);
2221
2222 done:
2223         release_firmware(fw);
2224
2225         if (err < 0)
2226                 return err;
2227
2228         calltime = ktime_get();
2229
2230         set_bit(BTUSB_BOOTING, &data->flags);
2231
2232         skb = __hci_cmd_sync(hdev, 0xfc01, sizeof(reset_param), reset_param,
2233                              HCI_INIT_TIMEOUT);
2234         if (IS_ERR(skb))
2235                 return PTR_ERR(skb);
2236
2237         kfree_skb(skb);
2238
2239         /* The bootloader will not indicate when the device is ready. This
2240          * is done by the operational firmware sending bootup notification.
2241          *
2242          * Booting into operational firmware should not take longer than
2243          * 1 second. However if that happens, then just fail the setup
2244          * since something went wrong.
2245          */
2246         BT_INFO("%s: Waiting for device to boot", hdev->name);
2247
2248         err = btusb_wait_on_bit_timeout(&data->flags, BTUSB_BOOTING,
2249                                         msecs_to_jiffies(1000),
2250                                         TASK_INTERRUPTIBLE);
2251
2252         if (err == 1) {
2253                 BT_ERR("%s: Device boot interrupted", hdev->name);
2254                 return -EINTR;
2255         }
2256
2257         if (err) {
2258                 BT_ERR("%s: Device boot timeout", hdev->name);
2259                 return -ETIMEDOUT;
2260         }
2261
2262         rettime = ktime_get();
2263         delta = ktime_sub(rettime, calltime);
2264         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2265
2266         BT_INFO("%s: Device booted in %llu usecs", hdev->name, duration);
2267
2268         clear_bit(BTUSB_BOOTLOADER, &data->flags);
2269
2270         return 0;
2271 }
2272
2273 static void btusb_hw_error_intel(struct hci_dev *hdev, u8 code)
2274 {
2275         struct sk_buff *skb;
2276         u8 type = 0x00;
2277
2278         BT_ERR("%s: Hardware error 0x%2.2x", hdev->name, code);
2279
2280         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2281         if (IS_ERR(skb)) {
2282                 BT_ERR("%s: Reset after hardware error failed (%ld)",
2283                        hdev->name, PTR_ERR(skb));
2284                 return;
2285         }
2286         kfree_skb(skb);
2287
2288         skb = __hci_cmd_sync(hdev, 0xfc22, 1, &type, HCI_INIT_TIMEOUT);
2289         if (IS_ERR(skb)) {
2290                 BT_ERR("%s: Retrieving Intel exception info failed (%ld)",
2291                        hdev->name, PTR_ERR(skb));
2292                 return;
2293         }
2294
2295         if (skb->len != 13) {
2296                 BT_ERR("%s: Exception info size mismatch", hdev->name);
2297                 kfree_skb(skb);
2298                 return;
2299         }
2300
2301         if (skb->data[0] != 0x00) {
2302                 BT_ERR("%s: Exception info command failure (%02x)",
2303                        hdev->name, skb->data[0]);
2304                 kfree_skb(skb);
2305                 return;
2306         }
2307
2308         BT_ERR("%s: Exception info %s", hdev->name, (char *)(skb->data + 1));
2309
2310         kfree_skb(skb);
2311 }
2312
2313 static int btusb_set_bdaddr_intel(struct hci_dev *hdev, const bdaddr_t *bdaddr)
2314 {
2315         struct sk_buff *skb;
2316         long ret;
2317
2318         skb = __hci_cmd_sync(hdev, 0xfc31, 6, bdaddr, HCI_INIT_TIMEOUT);
2319         if (IS_ERR(skb)) {
2320                 ret = PTR_ERR(skb);
2321                 BT_ERR("%s: changing Intel device address failed (%ld)",
2322                        hdev->name, ret);
2323                 return ret;
2324         }
2325         kfree_skb(skb);
2326
2327         return 0;
2328 }
2329
2330 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
2331                                     const bdaddr_t *bdaddr)
2332 {
2333         struct sk_buff *skb;
2334         u8 buf[8];
2335         long ret;
2336
2337         buf[0] = 0xfe;
2338         buf[1] = sizeof(bdaddr_t);
2339         memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
2340
2341         skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2342         if (IS_ERR(skb)) {
2343                 ret = PTR_ERR(skb);
2344                 BT_ERR("%s: changing Marvell device address failed (%ld)",
2345                        hdev->name, ret);
2346                 return ret;
2347         }
2348         kfree_skb(skb);
2349
2350         return 0;
2351 }
2352
2353 #define BDADDR_BCM20702A0 (&(bdaddr_t) {{0x00, 0xa0, 0x02, 0x70, 0x20, 0x00}})
2354
2355 static int btusb_setup_bcm_patchram(struct hci_dev *hdev)
2356 {
2357         struct btusb_data *data = hci_get_drvdata(hdev);
2358         struct usb_device *udev = data->udev;
2359         char fw_name[64];
2360         const struct firmware *fw;
2361         const u8 *fw_ptr;
2362         size_t fw_size;
2363         const struct hci_command_hdr *cmd;
2364         const u8 *cmd_param;
2365         u16 opcode;
2366         struct sk_buff *skb;
2367         struct hci_rp_read_local_version *ver;
2368         struct hci_rp_read_bd_addr *bda;
2369         long ret;
2370
2371         snprintf(fw_name, sizeof(fw_name), "brcm/%s-%04x-%04x.hcd",
2372                  udev->product ? udev->product : "BCM",
2373                  le16_to_cpu(udev->descriptor.idVendor),
2374                  le16_to_cpu(udev->descriptor.idProduct));
2375
2376         ret = request_firmware(&fw, fw_name, &hdev->dev);
2377         if (ret < 0) {
2378                 BT_INFO("%s: BCM: patch %s not found", hdev->name, fw_name);
2379                 return 0;
2380         }
2381
2382         /* Reset */
2383         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2384         if (IS_ERR(skb)) {
2385                 ret = PTR_ERR(skb);
2386                 BT_ERR("%s: HCI_OP_RESET failed (%ld)", hdev->name, ret);
2387                 goto done;
2388         }
2389         kfree_skb(skb);
2390
2391         /* Read Local Version Info */
2392         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
2393                              HCI_INIT_TIMEOUT);
2394         if (IS_ERR(skb)) {
2395                 ret = PTR_ERR(skb);
2396                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION failed (%ld)",
2397                        hdev->name, ret);
2398                 goto done;
2399         }
2400
2401         if (skb->len != sizeof(*ver)) {
2402                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION event length mismatch",
2403                        hdev->name);
2404                 kfree_skb(skb);
2405                 ret = -EIO;
2406                 goto done;
2407         }
2408
2409         ver = (struct hci_rp_read_local_version *)skb->data;
2410         BT_INFO("%s: BCM: patching hci_ver=%02x hci_rev=%04x lmp_ver=%02x "
2411                 "lmp_subver=%04x", hdev->name, ver->hci_ver, ver->hci_rev,
2412                 ver->lmp_ver, ver->lmp_subver);
2413         kfree_skb(skb);
2414
2415         /* Start Download */
2416         skb = __hci_cmd_sync(hdev, 0xfc2e, 0, NULL, HCI_INIT_TIMEOUT);
2417         if (IS_ERR(skb)) {
2418                 ret = PTR_ERR(skb);
2419                 BT_ERR("%s: BCM: Download Minidrv command failed (%ld)",
2420                        hdev->name, ret);
2421                 goto reset_fw;
2422         }
2423         kfree_skb(skb);
2424
2425         /* 50 msec delay after Download Minidrv completes */
2426         msleep(50);
2427
2428         fw_ptr = fw->data;
2429         fw_size = fw->size;
2430
2431         while (fw_size >= sizeof(*cmd)) {
2432                 cmd = (struct hci_command_hdr *)fw_ptr;
2433                 fw_ptr += sizeof(*cmd);
2434                 fw_size -= sizeof(*cmd);
2435
2436                 if (fw_size < cmd->plen) {
2437                         BT_ERR("%s: BCM: patch %s is corrupted",
2438                                hdev->name, fw_name);
2439                         ret = -EINVAL;
2440                         goto reset_fw;
2441                 }
2442
2443                 cmd_param = fw_ptr;
2444                 fw_ptr += cmd->plen;
2445                 fw_size -= cmd->plen;
2446
2447                 opcode = le16_to_cpu(cmd->opcode);
2448
2449                 skb = __hci_cmd_sync(hdev, opcode, cmd->plen, cmd_param,
2450                                      HCI_INIT_TIMEOUT);
2451                 if (IS_ERR(skb)) {
2452                         ret = PTR_ERR(skb);
2453                         BT_ERR("%s: BCM: patch command %04x failed (%ld)",
2454                                hdev->name, opcode, ret);
2455                         goto reset_fw;
2456                 }
2457                 kfree_skb(skb);
2458         }
2459
2460         /* 250 msec delay after Launch Ram completes */
2461         msleep(250);
2462
2463 reset_fw:
2464         /* Reset */
2465         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2466         if (IS_ERR(skb)) {
2467                 ret = PTR_ERR(skb);
2468                 BT_ERR("%s: HCI_OP_RESET failed (%ld)", hdev->name, ret);
2469                 goto done;
2470         }
2471         kfree_skb(skb);
2472
2473         /* Read Local Version Info */
2474         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
2475                              HCI_INIT_TIMEOUT);
2476         if (IS_ERR(skb)) {
2477                 ret = PTR_ERR(skb);
2478                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION failed (%ld)",
2479                        hdev->name, ret);
2480                 goto done;
2481         }
2482
2483         if (skb->len != sizeof(*ver)) {
2484                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION event length mismatch",
2485                        hdev->name);
2486                 kfree_skb(skb);
2487                 ret = -EIO;
2488                 goto done;
2489         }
2490
2491         ver = (struct hci_rp_read_local_version *)skb->data;
2492         BT_INFO("%s: BCM: firmware hci_ver=%02x hci_rev=%04x lmp_ver=%02x "
2493                 "lmp_subver=%04x", hdev->name, ver->hci_ver, ver->hci_rev,
2494                 ver->lmp_ver, ver->lmp_subver);
2495         kfree_skb(skb);
2496
2497         /* Read BD Address */
2498         skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
2499                              HCI_INIT_TIMEOUT);
2500         if (IS_ERR(skb)) {
2501                 ret = PTR_ERR(skb);
2502                 BT_ERR("%s: HCI_OP_READ_BD_ADDR failed (%ld)",
2503                        hdev->name, ret);
2504                 goto done;
2505         }
2506
2507         if (skb->len != sizeof(*bda)) {
2508                 BT_ERR("%s: HCI_OP_READ_BD_ADDR event length mismatch",
2509                        hdev->name);
2510                 kfree_skb(skb);
2511                 ret = -EIO;
2512                 goto done;
2513         }
2514
2515         bda = (struct hci_rp_read_bd_addr *)skb->data;
2516         if (bda->status) {
2517                 BT_ERR("%s: HCI_OP_READ_BD_ADDR error status (%02x)",
2518                        hdev->name, bda->status);
2519                 kfree_skb(skb);
2520                 ret = -bt_to_errno(bda->status);
2521                 goto done;
2522         }
2523
2524         /* The address 00:20:70:02:A0:00 indicates a BCM20702A0 controller
2525          * with no configured address.
2526          */
2527         if (!bacmp(&bda->bdaddr, BDADDR_BCM20702A0)) {
2528                 BT_INFO("%s: BCM: using default device address (%pMR)",
2529                         hdev->name, &bda->bdaddr);
2530                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2531         }
2532
2533         kfree_skb(skb);
2534
2535 done:
2536         release_firmware(fw);
2537
2538         return ret;
2539 }
2540
2541 static int btusb_set_bdaddr_bcm(struct hci_dev *hdev, const bdaddr_t *bdaddr)
2542 {
2543         struct sk_buff *skb;
2544         long ret;
2545
2546         skb = __hci_cmd_sync(hdev, 0xfc01, 6, bdaddr, HCI_INIT_TIMEOUT);
2547         if (IS_ERR(skb)) {
2548                 ret = PTR_ERR(skb);
2549                 BT_ERR("%s: BCM: Change address command failed (%ld)",
2550                        hdev->name, ret);
2551                 return ret;
2552         }
2553         kfree_skb(skb);
2554
2555         return 0;
2556 }
2557
2558 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
2559                                     const bdaddr_t *bdaddr)
2560 {
2561         struct sk_buff *skb;
2562         u8 buf[10];
2563         long ret;
2564
2565         buf[0] = 0x01;
2566         buf[1] = 0x01;
2567         buf[2] = 0x00;
2568         buf[3] = sizeof(bdaddr_t);
2569         memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
2570
2571         skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2572         if (IS_ERR(skb)) {
2573                 ret = PTR_ERR(skb);
2574                 BT_ERR("%s: Change address command failed (%ld)",
2575                        hdev->name, ret);
2576                 return ret;
2577         }
2578         kfree_skb(skb);
2579
2580         return 0;
2581 }
2582
2583 static int btusb_probe(struct usb_interface *intf,
2584                        const struct usb_device_id *id)
2585 {
2586         struct usb_endpoint_descriptor *ep_desc;
2587         struct btusb_data *data;
2588         struct hci_dev *hdev;
2589         int i, err;
2590
2591         BT_DBG("intf %p id %p", intf, id);
2592
2593         /* interface numbers are hardcoded in the spec */
2594         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
2595                 return -ENODEV;
2596
2597         if (!id->driver_info) {
2598                 const struct usb_device_id *match;
2599
2600                 match = usb_match_id(intf, blacklist_table);
2601                 if (match)
2602                         id = match;
2603         }
2604
2605         if (id->driver_info == BTUSB_IGNORE)
2606                 return -ENODEV;
2607
2608         if (id->driver_info & BTUSB_ATH3012) {
2609                 struct usb_device *udev = interface_to_usbdev(intf);
2610
2611                 /* Old firmware would otherwise let ath3k driver load
2612                  * patch and sysconfig files */
2613                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
2614                         return -ENODEV;
2615         }
2616
2617         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
2618         if (!data)
2619                 return -ENOMEM;
2620
2621         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2622                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2623
2624                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
2625                         data->intr_ep = ep_desc;
2626                         continue;
2627                 }
2628
2629                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
2630                         data->bulk_tx_ep = ep_desc;
2631                         continue;
2632                 }
2633
2634                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
2635                         data->bulk_rx_ep = ep_desc;
2636                         continue;
2637                 }
2638         }
2639
2640         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
2641                 return -ENODEV;
2642
2643         if (id->driver_info & BTUSB_AMP) {
2644                 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
2645                 data->cmdreq = 0x2b;
2646         } else {
2647                 data->cmdreq_type = USB_TYPE_CLASS;
2648                 data->cmdreq = 0x00;
2649         }
2650
2651         data->udev = interface_to_usbdev(intf);
2652         data->intf = intf;
2653
2654         INIT_WORK(&data->work, btusb_work);
2655         INIT_WORK(&data->waker, btusb_waker);
2656         init_usb_anchor(&data->deferred);
2657         init_usb_anchor(&data->tx_anchor);
2658         spin_lock_init(&data->txlock);
2659
2660         init_usb_anchor(&data->intr_anchor);
2661         init_usb_anchor(&data->bulk_anchor);
2662         init_usb_anchor(&data->isoc_anchor);
2663         spin_lock_init(&data->rxlock);
2664
2665         if (id->driver_info & BTUSB_INTEL_NEW) {
2666                 data->recv_event = btusb_recv_event_intel;
2667                 data->recv_bulk = btusb_recv_bulk_intel;
2668                 set_bit(BTUSB_BOOTLOADER, &data->flags);
2669         } else {
2670                 data->recv_event = hci_recv_frame;
2671                 data->recv_bulk = btusb_recv_bulk;
2672         }
2673
2674         hdev = hci_alloc_dev();
2675         if (!hdev)
2676                 return -ENOMEM;
2677
2678         hdev->bus = HCI_USB;
2679         hci_set_drvdata(hdev, data);
2680
2681         if (id->driver_info & BTUSB_AMP)
2682                 hdev->dev_type = HCI_AMP;
2683         else
2684                 hdev->dev_type = HCI_BREDR;
2685
2686         data->hdev = hdev;
2687
2688         SET_HCIDEV_DEV(hdev, &intf->dev);
2689
2690         hdev->open   = btusb_open;
2691         hdev->close  = btusb_close;
2692         hdev->flush  = btusb_flush;
2693         hdev->send   = btusb_send_frame;
2694         hdev->notify = btusb_notify;
2695
2696         if (id->driver_info & BTUSB_BCM92035)
2697                 hdev->setup = btusb_setup_bcm92035;
2698
2699         if (id->driver_info & BTUSB_BCM_PATCHRAM) {
2700                 hdev->setup = btusb_setup_bcm_patchram;
2701                 hdev->set_bdaddr = btusb_set_bdaddr_bcm;
2702                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2703         }
2704
2705         if (id->driver_info & BTUSB_INTEL) {
2706                 hdev->setup = btusb_setup_intel;
2707                 hdev->set_bdaddr = btusb_set_bdaddr_intel;
2708                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2709         }
2710
2711         if (id->driver_info & BTUSB_INTEL_NEW) {
2712                 hdev->send = btusb_send_frame_intel;
2713                 hdev->setup = btusb_setup_intel_new;
2714                 hdev->hw_error = btusb_hw_error_intel;
2715                 hdev->set_bdaddr = btusb_set_bdaddr_intel;
2716                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2717         }
2718
2719         if (id->driver_info & BTUSB_MARVELL)
2720                 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
2721
2722         if (id->driver_info & BTUSB_SWAVE) {
2723                 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
2724                 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
2725         }
2726
2727         if (id->driver_info & BTUSB_INTEL_BOOT)
2728                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
2729
2730         if (id->driver_info & BTUSB_ATH3012) {
2731                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
2732                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2733         }
2734
2735         if (id->driver_info & BTUSB_AMP) {
2736                 /* AMP controllers do not support SCO packets */
2737                 data->isoc = NULL;
2738         } else {
2739                 /* Interface numbers are hardcoded in the specification */
2740                 data->isoc = usb_ifnum_to_if(data->udev, 1);
2741         }
2742
2743         if (!reset)
2744                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2745
2746         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
2747                 if (!disable_scofix)
2748                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
2749         }
2750
2751         if (id->driver_info & BTUSB_BROKEN_ISOC)
2752                 data->isoc = NULL;
2753
2754         if (id->driver_info & BTUSB_DIGIANSWER) {
2755                 data->cmdreq_type = USB_TYPE_VENDOR;
2756                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2757         }
2758
2759         if (id->driver_info & BTUSB_CSR) {
2760                 struct usb_device *udev = data->udev;
2761                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
2762
2763                 /* Old firmware would otherwise execute USB reset */
2764                 if (bcdDevice < 0x117)
2765                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2766
2767                 /* Fake CSR devices with broken commands */
2768                 if (bcdDevice <= 0x100)
2769                         hdev->setup = btusb_setup_csr;
2770         }
2771
2772         if (id->driver_info & BTUSB_SNIFFER) {
2773                 struct usb_device *udev = data->udev;
2774
2775                 /* New sniffer firmware has crippled HCI interface */
2776                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
2777                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
2778         }
2779
2780         if (id->driver_info & BTUSB_INTEL_BOOT) {
2781                 /* A bug in the bootloader causes that interrupt interface is
2782                  * only enabled after receiving SetInterface(0, AltSetting=0).
2783                  */
2784                 err = usb_set_interface(data->udev, 0, 0);
2785                 if (err < 0) {
2786                         BT_ERR("failed to set interface 0, alt 0 %d", err);
2787                         hci_free_dev(hdev);
2788                         return err;
2789                 }
2790         }
2791
2792         if (data->isoc) {
2793                 err = usb_driver_claim_interface(&btusb_driver,
2794                                                  data->isoc, data);
2795                 if (err < 0) {
2796                         hci_free_dev(hdev);
2797                         return err;
2798                 }
2799         }
2800
2801         err = hci_register_dev(hdev);
2802         if (err < 0) {
2803                 hci_free_dev(hdev);
2804                 return err;
2805         }
2806
2807         usb_set_intfdata(intf, data);
2808
2809         return 0;
2810 }
2811
2812 static void btusb_disconnect(struct usb_interface *intf)
2813 {
2814         struct btusb_data *data = usb_get_intfdata(intf);
2815         struct hci_dev *hdev;
2816
2817         BT_DBG("intf %p", intf);
2818
2819         if (!data)
2820                 return;
2821
2822         hdev = data->hdev;
2823         usb_set_intfdata(data->intf, NULL);
2824
2825         if (data->isoc)
2826                 usb_set_intfdata(data->isoc, NULL);
2827
2828         hci_unregister_dev(hdev);
2829
2830         if (intf == data->isoc)
2831                 usb_driver_release_interface(&btusb_driver, data->intf);
2832         else if (data->isoc)
2833                 usb_driver_release_interface(&btusb_driver, data->isoc);
2834
2835         hci_free_dev(hdev);
2836 }
2837
2838 #ifdef CONFIG_PM
2839 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
2840 {
2841         struct btusb_data *data = usb_get_intfdata(intf);
2842
2843         BT_DBG("intf %p", intf);
2844
2845         if (data->suspend_count++)
2846                 return 0;
2847
2848         spin_lock_irq(&data->txlock);
2849         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
2850                 set_bit(BTUSB_SUSPENDING, &data->flags);
2851                 spin_unlock_irq(&data->txlock);
2852         } else {
2853                 spin_unlock_irq(&data->txlock);
2854                 data->suspend_count--;
2855                 return -EBUSY;
2856         }
2857
2858         cancel_work_sync(&data->work);
2859
2860         btusb_stop_traffic(data);
2861         usb_kill_anchored_urbs(&data->tx_anchor);
2862
2863         return 0;
2864 }
2865
2866 static void play_deferred(struct btusb_data *data)
2867 {
2868         struct urb *urb;
2869         int err;
2870
2871         while ((urb = usb_get_from_anchor(&data->deferred))) {
2872                 err = usb_submit_urb(urb, GFP_ATOMIC);
2873                 if (err < 0)
2874                         break;
2875
2876                 data->tx_in_flight++;
2877         }
2878         usb_scuttle_anchored_urbs(&data->deferred);
2879 }
2880
2881 static int btusb_resume(struct usb_interface *intf)
2882 {
2883         struct btusb_data *data = usb_get_intfdata(intf);
2884         struct hci_dev *hdev = data->hdev;
2885         int err = 0;
2886
2887         BT_DBG("intf %p", intf);
2888
2889         if (--data->suspend_count)
2890                 return 0;
2891
2892         if (!test_bit(HCI_RUNNING, &hdev->flags))
2893                 goto done;
2894
2895         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
2896                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
2897                 if (err < 0) {
2898                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
2899                         goto failed;
2900                 }
2901         }
2902
2903         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
2904                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
2905                 if (err < 0) {
2906                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
2907                         goto failed;
2908                 }
2909
2910                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
2911         }
2912
2913         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
2914                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
2915                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
2916                 else
2917                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
2918         }
2919
2920         spin_lock_irq(&data->txlock);
2921         play_deferred(data);
2922         clear_bit(BTUSB_SUSPENDING, &data->flags);
2923         spin_unlock_irq(&data->txlock);
2924         schedule_work(&data->work);
2925
2926         return 0;
2927
2928 failed:
2929         usb_scuttle_anchored_urbs(&data->deferred);
2930 done:
2931         spin_lock_irq(&data->txlock);
2932         clear_bit(BTUSB_SUSPENDING, &data->flags);
2933         spin_unlock_irq(&data->txlock);
2934
2935         return err;
2936 }
2937 #endif
2938
2939 static struct usb_driver btusb_driver = {
2940         .name           = "btusb",
2941         .probe          = btusb_probe,
2942         .disconnect     = btusb_disconnect,
2943 #ifdef CONFIG_PM
2944         .suspend        = btusb_suspend,
2945         .resume         = btusb_resume,
2946 #endif
2947         .id_table       = btusb_table,
2948         .supports_autosuspend = 1,
2949         .disable_hub_initiated_lpm = 1,
2950 };
2951
2952 module_usb_driver(btusb_driver);
2953
2954 module_param(disable_scofix, bool, 0644);
2955 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
2956
2957 module_param(force_scofix, bool, 0644);
2958 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
2959
2960 module_param(reset, bool, 0644);
2961 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
2962
2963 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
2964 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
2965 MODULE_VERSION(VERSION);
2966 MODULE_LICENSE("GPL");