drivers/bluetooth/btusb.c

   1 /*
   2  *
   3  *  Generic Bluetooth USB driver
   4  *
   5  *  Copyright (C) 2005-2008  Marcel Holtmann <marcel@holtmann.org>
   6  *
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, write to the Free Software
  20  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  *
  22  */
  23
  24 #include <linux/module.h>
  25 #include <linux/usb.h>
  26 #include <linux/firmware.h>
  27
  28 #include <net/bluetooth/bluetooth.h>
  29 #include <net/bluetooth/hci_core.h>
  30
  31 #define VERSION "0.7"
  32
  33 static bool disable_scofix;
  34 static bool force_scofix;
  35
  36 static bool reset = 1;
  37
  38 static struct usb_driver btusb_driver;
  39
  40 #define BTUSB_IGNORE            0x01
  41 #define BTUSB_DIGIANSWER        0x02
  42 #define BTUSB_CSR               0x04
  43 #define BTUSB_SNIFFER           0x08
  44 #define BTUSB_BCM92035          0x10
  45 #define BTUSB_BROKEN_ISOC       0x20
  46 #define BTUSB_WRONG_SCO_MTU     0x40
  47 #define BTUSB_ATH3012           0x80
  48 #define BTUSB_INTEL             0x100
  49 #define BTUSB_INTEL_BOOT        0x200
  50 #define BTUSB_BCM_PATCHRAM      0x400
  51 #define BTUSB_MARVELL           0x800
  52 #define BTUSB_SWAVE             0x1000
  53 #define BTUSB_INTEL_NEW         0x2000
  54 #define BTUSB_AMP               0x4000
  55
  56 static const struct usb_device_id btusb_table[] = {
  57         /* Generic Bluetooth USB device */
  58         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  59
  60         /* Generic Bluetooth AMP device */
  61         { USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP },
  62
  63         /* Apple-specific (Broadcom) devices */
  64         { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01) },
  65
  66         /* MediaTek MT76x0E */
  67         { USB_DEVICE(0x0e8d, 0x763f) },
  68
  69         /* Broadcom SoftSailing reporting vendor specific */
  70         { USB_DEVICE(0x0a5c, 0x21e1) },
  71
  72         /* Apple MacBookPro 7,1 */
  73         { USB_DEVICE(0x05ac, 0x8213) },
  74
  75         /* Apple iMac11,1 */
  76         { USB_DEVICE(0x05ac, 0x8215) },
  77
  78         /* Apple MacBookPro6,2 */
  79         { USB_DEVICE(0x05ac, 0x8218) },
  80
  81         /* Apple MacBookAir3,1, MacBookAir3,2 */
  82         { USB_DEVICE(0x05ac, 0x821b) },
  83
  84         /* Apple MacBookAir4,1 */
  85         { USB_DEVICE(0x05ac, 0x821f) },
  86
  87         /* Apple MacBookPro8,2 */
  88         { USB_DEVICE(0x05ac, 0x821a) },
  89
  90         /* Apple MacMini5,1 */
  91         { USB_DEVICE(0x05ac, 0x8281) },
  92
  93         /* AVM BlueFRITZ! USB v2.0 */
  94         { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE },
  95
  96         /* Bluetooth Ultraport Module from IBM */
  97         { USB_DEVICE(0x04bf, 0x030a) },
  98
  99         /* ALPS Modules with non-standard id */
 100         { USB_DEVICE(0x044e, 0x3001) },
 101         { USB_DEVICE(0x044e, 0x3002) },
 102
 103         /* Ericsson with non-standard id */
 104         { USB_DEVICE(0x0bdb, 0x1002) },
 105
 106         /* Canyon CN-BTU1 with HID interfaces */
 107         { USB_DEVICE(0x0c10, 0x0000) },
 108
 109         /* Broadcom BCM20702A0 */
 110         { USB_DEVICE(0x0489, 0xe042) },
 111         { USB_DEVICE(0x04ca, 0x2003) },
 112         { USB_DEVICE(0x0b05, 0x17b5) },
 113         { USB_DEVICE(0x0b05, 0x17cb) },
 114         { USB_DEVICE(0x413c, 0x8197) },
 115         { USB_DEVICE(0x13d3, 0x3404),
 116           .driver_info = BTUSB_BCM_PATCHRAM },
 117
 118         /* Broadcom BCM20702B0 (Dynex/Insignia) */
 119         { USB_DEVICE(0x19ff, 0x0239), .driver_info = BTUSB_BCM_PATCHRAM },
 120
 121         /* Foxconn - Hon Hai */
 122         { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01),
 123           .driver_info = BTUSB_BCM_PATCHRAM },
 124
 125         /* Lite-On Technology - Broadcom based */
 126         { USB_VENDOR_AND_INTERFACE_INFO(0x04ca, 0xff, 0x01, 0x01),
 127           .driver_info = BTUSB_BCM_PATCHRAM },
 128
 129         /* Broadcom devices with vendor specific id */
 130         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
 131           .driver_info = BTUSB_BCM_PATCHRAM },
 132
 133         /* ASUSTek Computer - Broadcom based */
 134         { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01),
 135           .driver_info = BTUSB_BCM_PATCHRAM },
 136
 137         /* Belkin F8065bf - Broadcom based */
 138         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01) },
 139
 140         /* IMC Networks - Broadcom based */
 141         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01) },
 142
 143         /* Intel Bluetooth USB Bootloader (RAM module) */
 144         { USB_DEVICE(0x8087, 0x0a5a),
 145           .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
 146
 147         { }     /* Terminating entry */
 148 };
 149
 150 MODULE_DEVICE_TABLE(usb, btusb_table);
 151
 152 static const struct usb_device_id blacklist_table[] = {
 153         /* CSR BlueCore devices */
 154         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 155
 156         /* Broadcom BCM2033 without firmware */
 157         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 158
 159         /* Atheros 3011 with sflash firmware */
 160         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 161         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 162         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 163         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 164         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 165         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 166
 167         /* Atheros AR9285 Malbec with sflash firmware */
 168         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 169
 170         /* Atheros 3012 with sflash firmware */
 171         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 172         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 173         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 174         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 175         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 176         { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
 177         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 178         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 179         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 180         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 181         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 182         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 183         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 184         { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
 185         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 186         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 187         { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
 188         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 189         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 190         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 191         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 192         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 193         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
 194         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 195         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 196         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 197         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 198         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 199         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 200         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 201         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 202         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 203         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 204         { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
 205         { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
 206         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
 207
 208         /* Atheros AR5BBU12 with sflash firmware */
 209         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 210
 211         /* Atheros AR5BBU12 with sflash firmware */
 212         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 213         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 214
 215         /* Broadcom BCM2035 */
 216         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 217         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 218         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 219
 220         /* Broadcom BCM2045 */
 221         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 222         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 223
 224         /* IBM/Lenovo ThinkPad with Broadcom chip */
 225         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 226         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 227
 228         /* HP laptop with Broadcom chip */
 229         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 230
 231         /* Dell laptop with Broadcom chip */
 232         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 233
 234         /* Dell Wireless 370 and 410 devices */
 235         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 236         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 237
 238         /* Belkin F8T012 and F8T013 devices */
 239         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 240         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 241
 242         /* Asus WL-BTD202 device */
 243         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 244
 245         /* Kensington Bluetooth USB adapter */
 246         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 247
 248         /* RTX Telecom based adapters with buggy SCO support */
 249         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 250         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 251
 252         /* CONWISE Technology based adapters with buggy SCO support */
 253         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 254
 255         /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
 256         { USB_DEVICE(0x1300, 0x0001), .driver_info = BTUSB_SWAVE },
 257
 258         /* Digianswer devices */
 259         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 260         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 261
 262         /* CSR BlueCore Bluetooth Sniffer */
 263         { USB_DEVICE(0x0a12, 0x0002),
 264           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 265
 266         /* Frontline ComProbe Bluetooth Sniffer */
 267         { USB_DEVICE(0x16d3, 0x0002),
 268           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 269
 270         /* Marvell Bluetooth devices */
 271         { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
 272         { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
 273
 274         /* Intel Bluetooth devices */
 275         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 276         { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
 277         { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_NEW },
 278
 279         /* Other Intel Bluetooth devices */
 280         { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01),
 281           .driver_info = BTUSB_IGNORE },
 282
 283         { }     /* Terminating entry */
 284 };
 285
 286 #define BTUSB_MAX_ISOC_FRAMES   10
 287
 288 #define BTUSB_INTR_RUNNING      0
 289 #define BTUSB_BULK_RUNNING      1
 290 #define BTUSB_ISOC_RUNNING      2
 291 #define BTUSB_SUSPENDING        3
 292 #define BTUSB_DID_ISO_RESUME    4
 293 #define BTUSB_BOOTLOADER        5
 294 #define BTUSB_DOWNLOADING       6
 295 #define BTUSB_FIRMWARE_LOADED   7
 296 #define BTUSB_FIRMWARE_FAILED   8
 297 #define BTUSB_BOOTING           9
 298
 299 struct btusb_data {
 300         struct hci_dev       *hdev;
 301         struct usb_device    *udev;
 302         struct usb_interface *intf;
 303         struct usb_interface *isoc;
 304
 305         unsigned long flags;
 306
 307         struct work_struct work;
 308         struct work_struct waker;
 309
 310         struct usb_anchor deferred;
 311         struct usb_anchor tx_anchor;
 312         int tx_in_flight;
 313         spinlock_t txlock;
 314
 315         struct usb_anchor intr_anchor;
 316         struct usb_anchor bulk_anchor;
 317         struct usb_anchor isoc_anchor;
 318         spinlock_t rxlock;
 319
 320         struct sk_buff *evt_skb;
 321         struct sk_buff *acl_skb;
 322         struct sk_buff *sco_skb;
 323
 324         struct usb_endpoint_descriptor *intr_ep;
 325         struct usb_endpoint_descriptor *bulk_tx_ep;
 326         struct usb_endpoint_descriptor *bulk_rx_ep;
 327         struct usb_endpoint_descriptor *isoc_tx_ep;
 328         struct usb_endpoint_descriptor *isoc_rx_ep;
 329
 330         __u8 cmdreq_type;
 331         __u8 cmdreq;
 332
 333         unsigned int sco_num;
 334         int isoc_altsetting;
 335         int suspend_count;
 336
 337         int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
 338         int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
 339 };
 340
 341 static int btusb_wait_on_bit_timeout(void *word, int bit, unsigned long timeout,
 342                                      unsigned mode)
 343 {
 344         might_sleep();
 345         if (!test_bit(bit, word))
 346                 return 0;
 347         return out_of_line_wait_on_bit_timeout(word, bit, bit_wait_timeout,
 348                                                mode, timeout);
 349 }
 350
 351 static inline void btusb_free_frags(struct btusb_data *data)
 352 {
 353         unsigned long flags;
 354
 355         spin_lock_irqsave(&data->rxlock, flags);
 356
 357         kfree_skb(data->evt_skb);
 358         data->evt_skb = NULL;
 359
 360         kfree_skb(data->acl_skb);
 361         data->acl_skb = NULL;
 362
 363         kfree_skb(data->sco_skb);
 364         data->sco_skb = NULL;
 365
 366         spin_unlock_irqrestore(&data->rxlock, flags);
 367 }
 368
 369 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
 370 {
 371         struct sk_buff *skb;
 372         int err = 0;
 373
 374         spin_lock(&data->rxlock);
 375         skb = data->evt_skb;
 376
 377         while (count) {
 378                 int len;
 379
 380                 if (!skb) {
 381                         skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
 382                         if (!skb) {
 383                                 err = -ENOMEM;
 384                                 break;
 385                         }
 386
 387                         bt_cb(skb)->pkt_type = HCI_EVENT_PKT;
 388                         bt_cb(skb)->expect = HCI_EVENT_HDR_SIZE;
 389                 }
 390
 391                 len = min_t(uint, bt_cb(skb)->expect, count);
 392                 memcpy(skb_put(skb, len), buffer, len);
 393
 394                 count -= len;
 395                 buffer += len;
 396                 bt_cb(skb)->expect -= len;
 397
 398                 if (skb->len == HCI_EVENT_HDR_SIZE) {
 399                         /* Complete event header */
 400                         bt_cb(skb)->expect = hci_event_hdr(skb)->plen;
 401
 402                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 403                                 kfree_skb(skb);
 404                                 skb = NULL;
 405
 406                                 err = -EILSEQ;
 407                                 break;
 408                         }
 409                 }
 410
 411                 if (bt_cb(skb)->expect == 0) {
 412                         /* Complete frame */
 413                         data->recv_event(data->hdev, skb);
 414                         skb = NULL;
 415                 }
 416         }
 417
 418         data->evt_skb = skb;
 419         spin_unlock(&data->rxlock);
 420
 421         return err;
 422 }
 423
 424 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
 425 {
 426         struct sk_buff *skb;
 427         int err = 0;
 428
 429         spin_lock(&data->rxlock);
 430         skb = data->acl_skb;
 431
 432         while (count) {
 433                 int len;
 434
 435                 if (!skb) {
 436                         skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
 437                         if (!skb) {
 438                                 err = -ENOMEM;
 439                                 break;
 440                         }
 441
 442                         bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT;
 443                         bt_cb(skb)->expect = HCI_ACL_HDR_SIZE;
 444                 }
 445
 446                 len = min_t(uint, bt_cb(skb)->expect, count);
 447                 memcpy(skb_put(skb, len), buffer, len);
 448
 449                 count -= len;
 450                 buffer += len;
 451                 bt_cb(skb)->expect -= len;
 452
 453                 if (skb->len == HCI_ACL_HDR_SIZE) {
 454                         __le16 dlen = hci_acl_hdr(skb)->dlen;
 455
 456                         /* Complete ACL header */
 457                         bt_cb(skb)->expect = __le16_to_cpu(dlen);
 458
 459                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 460                                 kfree_skb(skb);
 461                                 skb = NULL;
 462
 463                                 err = -EILSEQ;
 464                                 break;
 465                         }
 466                 }
 467
 468                 if (bt_cb(skb)->expect == 0) {
 469                         /* Complete frame */
 470                         hci_recv_frame(data->hdev, skb);
 471                         skb = NULL;
 472                 }
 473         }
 474
 475         data->acl_skb = skb;
 476         spin_unlock(&data->rxlock);
 477
 478         return err;
 479 }
 480
 481 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
 482 {
 483         struct sk_buff *skb;
 484         int err = 0;
 485
 486         spin_lock(&data->rxlock);
 487         skb = data->sco_skb;
 488
 489         while (count) {
 490                 int len;
 491
 492                 if (!skb) {
 493                         skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
 494                         if (!skb) {
 495                                 err = -ENOMEM;
 496                                 break;
 497                         }
 498
 499                         bt_cb(skb)->pkt_type = HCI_SCODATA_PKT;
 500                         bt_cb(skb)->expect = HCI_SCO_HDR_SIZE;
 501                 }
 502
 503                 len = min_t(uint, bt_cb(skb)->expect, count);
 504                 memcpy(skb_put(skb, len), buffer, len);
 505
 506                 count -= len;
 507                 buffer += len;
 508                 bt_cb(skb)->expect -= len;
 509
 510                 if (skb->len == HCI_SCO_HDR_SIZE) {
 511                         /* Complete SCO header */
 512                         bt_cb(skb)->expect = hci_sco_hdr(skb)->dlen;
 513
 514                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 515                                 kfree_skb(skb);
 516                                 skb = NULL;
 517
 518                                 err = -EILSEQ;
 519                                 break;
 520                         }
 521                 }
 522
 523                 if (bt_cb(skb)->expect == 0) {
 524                         /* Complete frame */
 525                         hci_recv_frame(data->hdev, skb);
 526                         skb = NULL;
 527                 }
 528         }
 529
 530         data->sco_skb = skb;
 531         spin_unlock(&data->rxlock);
 532
 533         return err;
 534 }
 535
 536 static void btusb_intr_complete(struct urb *urb)
 537 {
 538         struct hci_dev *hdev = urb->context;
 539         struct btusb_data *data = hci_get_drvdata(hdev);
 540         int err;
 541
 542         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 543                urb->actual_length);
 544
 545         if (!test_bit(HCI_RUNNING, &hdev->flags))
 546                 return;
 547
 548         if (urb->status == 0) {
 549                 hdev->stat.byte_rx += urb->actual_length;
 550
 551                 if (btusb_recv_intr(data, urb->transfer_buffer,
 552                                     urb->actual_length) < 0) {
 553                         BT_ERR("%s corrupted event packet", hdev->name);
 554                         hdev->stat.err_rx++;
 555                 }
 556         } else if (urb->status == -ENOENT) {
 557                 /* Avoid suspend failed when usb_kill_urb */
 558                 return;
 559         }
 560
 561         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 562                 return;
 563
 564         usb_mark_last_busy(data->udev);
 565         usb_anchor_urb(urb, &data->intr_anchor);
 566
 567         err = usb_submit_urb(urb, GFP_ATOMIC);
 568         if (err < 0) {
 569                 /* -EPERM: urb is being killed;
 570                  * -ENODEV: device got disconnected */
 571                 if (err != -EPERM && err != -ENODEV)
 572                         BT_ERR("%s urb %p failed to resubmit (%d)",
 573                                hdev->name, urb, -err);
 574                 usb_unanchor_urb(urb);
 575         }
 576 }
 577
 578 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 579 {
 580         struct btusb_data *data = hci_get_drvdata(hdev);
 581         struct urb *urb;
 582         unsigned char *buf;
 583         unsigned int pipe;
 584         int err, size;
 585
 586         BT_DBG("%s", hdev->name);
 587
 588         if (!data->intr_ep)
 589                 return -ENODEV;
 590
 591         urb = usb_alloc_urb(0, mem_flags);
 592         if (!urb)
 593                 return -ENOMEM;
 594
 595         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 596
 597         buf = kmalloc(size, mem_flags);
 598         if (!buf) {
 599                 usb_free_urb(urb);
 600                 return -ENOMEM;
 601         }
 602
 603         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 604
 605         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 606                          btusb_intr_complete, hdev, data->intr_ep->bInterval);
 607
 608         urb->transfer_flags |= URB_FREE_BUFFER;
 609
 610         usb_anchor_urb(urb, &data->intr_anchor);
 611
 612         err = usb_submit_urb(urb, mem_flags);
 613         if (err < 0) {
 614                 if (err != -EPERM && err != -ENODEV)
 615                         BT_ERR("%s urb %p submission failed (%d)",
 616                                hdev->name, urb, -err);
 617                 usb_unanchor_urb(urb);
 618         }
 619
 620         usb_free_urb(urb);
 621
 622         return err;
 623 }
 624
 625 static void btusb_bulk_complete(struct urb *urb)
 626 {
 627         struct hci_dev *hdev = urb->context;
 628         struct btusb_data *data = hci_get_drvdata(hdev);
 629         int err;
 630
 631         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 632                urb->actual_length);
 633
 634         if (!test_bit(HCI_RUNNING, &hdev->flags))
 635                 return;
 636
 637         if (urb->status == 0) {
 638                 hdev->stat.byte_rx += urb->actual_length;
 639
 640                 if (data->recv_bulk(data, urb->transfer_buffer,
 641                                     urb->actual_length) < 0) {
 642                         BT_ERR("%s corrupted ACL packet", hdev->name);
 643                         hdev->stat.err_rx++;
 644                 }
 645         } else if (urb->status == -ENOENT) {
 646                 /* Avoid suspend failed when usb_kill_urb */
 647                 return;
 648         }
 649
 650         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 651                 return;
 652
 653         usb_anchor_urb(urb, &data->bulk_anchor);
 654         usb_mark_last_busy(data->udev);
 655
 656         err = usb_submit_urb(urb, GFP_ATOMIC);
 657         if (err < 0) {
 658                 /* -EPERM: urb is being killed;
 659                  * -ENODEV: device got disconnected */
 660                 if (err != -EPERM && err != -ENODEV)
 661                         BT_ERR("%s urb %p failed to resubmit (%d)",
 662                                hdev->name, urb, -err);
 663                 usb_unanchor_urb(urb);
 664         }
 665 }
 666
 667 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 668 {
 669         struct btusb_data *data = hci_get_drvdata(hdev);
 670         struct urb *urb;
 671         unsigned char *buf;
 672         unsigned int pipe;
 673         int err, size = HCI_MAX_FRAME_SIZE;
 674
 675         BT_DBG("%s", hdev->name);
 676
 677         if (!data->bulk_rx_ep)
 678                 return -ENODEV;
 679
 680         urb = usb_alloc_urb(0, mem_flags);
 681         if (!urb)
 682                 return -ENOMEM;
 683
 684         buf = kmalloc(size, mem_flags);
 685         if (!buf) {
 686                 usb_free_urb(urb);
 687                 return -ENOMEM;
 688         }
 689
 690         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 691
 692         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
 693                           btusb_bulk_complete, hdev);
 694
 695         urb->transfer_flags |= URB_FREE_BUFFER;
 696
 697         usb_mark_last_busy(data->udev);
 698         usb_anchor_urb(urb, &data->bulk_anchor);
 699
 700         err = usb_submit_urb(urb, mem_flags);
 701         if (err < 0) {
 702                 if (err != -EPERM && err != -ENODEV)
 703                         BT_ERR("%s urb %p submission failed (%d)",
 704                                hdev->name, urb, -err);
 705                 usb_unanchor_urb(urb);
 706         }
 707
 708         usb_free_urb(urb);
 709
 710         return err;
 711 }
 712
 713 static void btusb_isoc_complete(struct urb *urb)
 714 {
 715         struct hci_dev *hdev = urb->context;
 716         struct btusb_data *data = hci_get_drvdata(hdev);
 717         int i, err;
 718
 719         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 720                urb->actual_length);
 721
 722         if (!test_bit(HCI_RUNNING, &hdev->flags))
 723                 return;
 724
 725         if (urb->status == 0) {
 726                 for (i = 0; i < urb->number_of_packets; i++) {
 727                         unsigned int offset = urb->iso_frame_desc[i].offset;
 728                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 729
 730                         if (urb->iso_frame_desc[i].status)
 731                                 continue;
 732
 733                         hdev->stat.byte_rx += length;
 734
 735                         if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
 736                                             length) < 0) {
 737                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 738                                 hdev->stat.err_rx++;
 739                         }
 740                 }
 741         } else if (urb->status == -ENOENT) {
 742                 /* Avoid suspend failed when usb_kill_urb */
 743                 return;
 744         }
 745
 746         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 747                 return;
 748
 749         usb_anchor_urb(urb, &data->isoc_anchor);
 750
 751         err = usb_submit_urb(urb, GFP_ATOMIC);
 752         if (err < 0) {
 753                 /* -EPERM: urb is being killed;
 754                  * -ENODEV: device got disconnected */
 755                 if (err != -EPERM && err != -ENODEV)
 756                         BT_ERR("%s urb %p failed to resubmit (%d)",
 757                                hdev->name, urb, -err);
 758                 usb_unanchor_urb(urb);
 759         }
 760 }
 761
 762 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 763 {
 764         int i, offset = 0;
 765
 766         BT_DBG("len %d mtu %d", len, mtu);
 767
 768         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 769                                         i++, offset += mtu, len -= mtu) {
 770                 urb->iso_frame_desc[i].offset = offset;
 771                 urb->iso_frame_desc[i].length = mtu;
 772         }
 773
 774         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 775                 urb->iso_frame_desc[i].offset = offset;
 776                 urb->iso_frame_desc[i].length = len;
 777                 i++;
 778         }
 779
 780         urb->number_of_packets = i;
 781 }
 782
 783 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 784 {
 785         struct btusb_data *data = hci_get_drvdata(hdev);
 786         struct urb *urb;
 787         unsigned char *buf;
 788         unsigned int pipe;
 789         int err, size;
 790
 791         BT_DBG("%s", hdev->name);
 792
 793         if (!data->isoc_rx_ep)
 794                 return -ENODEV;
 795
 796         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 797         if (!urb)
 798                 return -ENOMEM;
 799
 800         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 801                                                 BTUSB_MAX_ISOC_FRAMES;
 802
 803         buf = kmalloc(size, mem_flags);
 804         if (!buf) {
 805                 usb_free_urb(urb);
 806                 return -ENOMEM;
 807         }
 808
 809         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 810
 811         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 812                          hdev, data->isoc_rx_ep->bInterval);
 813
 814         urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
 815
 816         __fill_isoc_descriptor(urb, size,
 817                                le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 818
 819         usb_anchor_urb(urb, &data->isoc_anchor);
 820
 821         err = usb_submit_urb(urb, mem_flags);
 822         if (err < 0) {
 823                 if (err != -EPERM && err != -ENODEV)
 824                         BT_ERR("%s urb %p submission failed (%d)",
 825                                hdev->name, urb, -err);
 826                 usb_unanchor_urb(urb);
 827         }
 828
 829         usb_free_urb(urb);
 830
 831         return err;
 832 }
 833
 834 static void btusb_tx_complete(struct urb *urb)
 835 {
 836         struct sk_buff *skb = urb->context;
 837         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
 838         struct btusb_data *data = hci_get_drvdata(hdev);
 839
 840         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 841                urb->actual_length);
 842
 843         if (!test_bit(HCI_RUNNING, &hdev->flags))
 844                 goto done;
 845
 846         if (!urb->status)
 847                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 848         else
 849                 hdev->stat.err_tx++;
 850
 851 done:
 852         spin_lock(&data->txlock);
 853         data->tx_in_flight--;
 854         spin_unlock(&data->txlock);
 855
 856         kfree(urb->setup_packet);
 857
 858         kfree_skb(skb);
 859 }
 860
 861 static void btusb_isoc_tx_complete(struct urb *urb)
 862 {
 863         struct sk_buff *skb = urb->context;
 864         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
 865
 866         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 867                urb->actual_length);
 868
 869         if (!test_bit(HCI_RUNNING, &hdev->flags))
 870                 goto done;
 871
 872         if (!urb->status)
 873                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 874         else
 875                 hdev->stat.err_tx++;
 876
 877 done:
 878         kfree(urb->setup_packet);
 879
 880         kfree_skb(skb);
 881 }
 882
 883 static int btusb_open(struct hci_dev *hdev)
 884 {
 885         struct btusb_data *data = hci_get_drvdata(hdev);
 886         int err;
 887
 888         BT_DBG("%s", hdev->name);
 889
 890         err = usb_autopm_get_interface(data->intf);
 891         if (err < 0)
 892                 return err;
 893
 894         data->intf->needs_remote_wakeup = 1;
 895
 896         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 897                 goto done;
 898
 899         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 900                 goto done;
 901
 902         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 903         if (err < 0)
 904                 goto failed;
 905
 906         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 907         if (err < 0) {
 908                 usb_kill_anchored_urbs(&data->intr_anchor);
 909                 goto failed;
 910         }
 911
 912         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 913         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 914
 915 done:
 916         usb_autopm_put_interface(data->intf);
 917         return 0;
 918
 919 failed:
 920         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 921         clear_bit(HCI_RUNNING, &hdev->flags);
 922         usb_autopm_put_interface(data->intf);
 923         return err;
 924 }
 925
 926 static void btusb_stop_traffic(struct btusb_data *data)
 927 {
 928         usb_kill_anchored_urbs(&data->intr_anchor);
 929         usb_kill_anchored_urbs(&data->bulk_anchor);
 930         usb_kill_anchored_urbs(&data->isoc_anchor);
 931 }
 932
 933 static int btusb_close(struct hci_dev *hdev)
 934 {
 935         struct btusb_data *data = hci_get_drvdata(hdev);
 936         int err;
 937
 938         BT_DBG("%s", hdev->name);
 939
 940         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 941                 return 0;
 942
 943         cancel_work_sync(&data->work);
 944         cancel_work_sync(&data->waker);
 945
 946         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 947         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 948         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 949
 950         btusb_stop_traffic(data);
 951         btusb_free_frags(data);
 952
 953         err = usb_autopm_get_interface(data->intf);
 954         if (err < 0)
 955                 goto failed;
 956
 957         data->intf->needs_remote_wakeup = 0;
 958         usb_autopm_put_interface(data->intf);
 959
 960 failed:
 961         usb_scuttle_anchored_urbs(&data->deferred);
 962         return 0;
 963 }
 964
 965 static int btusb_flush(struct hci_dev *hdev)
 966 {
 967         struct btusb_data *data = hci_get_drvdata(hdev);
 968
 969         BT_DBG("%s", hdev->name);
 970
 971         usb_kill_anchored_urbs(&data->tx_anchor);
 972         btusb_free_frags(data);
 973
 974         return 0;
 975 }
 976
 977 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
 978 {
 979         struct btusb_data *data = hci_get_drvdata(hdev);
 980         struct usb_ctrlrequest *dr;
 981         struct urb *urb;
 982         unsigned int pipe;
 983
 984         urb = usb_alloc_urb(0, GFP_KERNEL);
 985         if (!urb)
 986                 return ERR_PTR(-ENOMEM);
 987
 988         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
 989         if (!dr) {
 990                 usb_free_urb(urb);
 991                 return ERR_PTR(-ENOMEM);
 992         }
 993
 994         dr->bRequestType = data->cmdreq_type;
 995         dr->bRequest     = data->cmdreq;
 996         dr->wIndex       = 0;
 997         dr->wValue       = 0;
 998         dr->wLength      = __cpu_to_le16(skb->len);
 999
1000         pipe = usb_sndctrlpipe(data->udev, 0x00);
1001
1002         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
1003                              skb->data, skb->len, btusb_tx_complete, skb);
1004
1005         skb->dev = (void *)hdev;
1006
1007         return urb;
1008 }
1009
1010 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
1011 {
1012         struct btusb_data *data = hci_get_drvdata(hdev);
1013         struct urb *urb;
1014         unsigned int pipe;
1015
1016         if (!data->bulk_tx_ep)
1017                 return ERR_PTR(-ENODEV);
1018
1019         urb = usb_alloc_urb(0, GFP_KERNEL);
1020         if (!urb)
1021                 return ERR_PTR(-ENOMEM);
1022
1023         pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1024
1025         usb_fill_bulk_urb(urb, data->udev, pipe,
1026                           skb->data, skb->len, btusb_tx_complete, skb);
1027
1028         skb->dev = (void *)hdev;
1029
1030         return urb;
1031 }
1032
1033 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1034 {
1035         struct btusb_data *data = hci_get_drvdata(hdev);
1036         struct urb *urb;
1037         unsigned int pipe;
1038
1039         if (!data->isoc_tx_ep)
1040                 return ERR_PTR(-ENODEV);
1041
1042         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1043         if (!urb)
1044                 return ERR_PTR(-ENOMEM);
1045
1046         pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1047
1048         usb_fill_int_urb(urb, data->udev, pipe,
1049                          skb->data, skb->len, btusb_isoc_tx_complete,
1050                          skb, data->isoc_tx_ep->bInterval);
1051
1052         urb->transfer_flags  = URB_ISO_ASAP;
1053
1054         __fill_isoc_descriptor(urb, skb->len,
1055                                le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1056
1057         skb->dev = (void *)hdev;
1058
1059         return urb;
1060 }
1061
1062 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1063 {
1064         struct btusb_data *data = hci_get_drvdata(hdev);
1065         int err;
1066
1067         usb_anchor_urb(urb, &data->tx_anchor);
1068
1069         err = usb_submit_urb(urb, GFP_KERNEL);
1070         if (err < 0) {
1071                 if (err != -EPERM && err != -ENODEV)
1072                         BT_ERR("%s urb %p submission failed (%d)",
1073                                hdev->name, urb, -err);
1074                 kfree(urb->setup_packet);
1075                 usb_unanchor_urb(urb);
1076         } else {
1077                 usb_mark_last_busy(data->udev);
1078         }
1079
1080         usb_free_urb(urb);
1081         return err;
1082 }
1083
1084 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1085 {
1086         struct btusb_data *data = hci_get_drvdata(hdev);
1087         unsigned long flags;
1088         bool suspending;
1089
1090         spin_lock_irqsave(&data->txlock, flags);
1091         suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1092         if (!suspending)
1093                 data->tx_in_flight++;
1094         spin_unlock_irqrestore(&data->txlock, flags);
1095
1096         if (!suspending)
1097                 return submit_tx_urb(hdev, urb);
1098
1099         usb_anchor_urb(urb, &data->deferred);
1100         schedule_work(&data->waker);
1101
1102         usb_free_urb(urb);
1103         return 0;
1104 }
1105
1106 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1107 {
1108         struct urb *urb;
1109
1110         BT_DBG("%s", hdev->name);
1111
1112         if (!test_bit(HCI_RUNNING, &hdev->flags))
1113                 return -EBUSY;
1114
1115         switch (bt_cb(skb)->pkt_type) {
1116         case HCI_COMMAND_PKT:
1117                 urb = alloc_ctrl_urb(hdev, skb);
1118                 if (IS_ERR(urb))
1119                         return PTR_ERR(urb);
1120
1121                 hdev->stat.cmd_tx++;
1122                 return submit_or_queue_tx_urb(hdev, urb);
1123
1124         case HCI_ACLDATA_PKT:
1125                 urb = alloc_bulk_urb(hdev, skb);
1126                 if (IS_ERR(urb))
1127                         return PTR_ERR(urb);
1128
1129                 hdev->stat.acl_tx++;
1130                 return submit_or_queue_tx_urb(hdev, urb);
1131
1132         case HCI_SCODATA_PKT:
1133                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1134                         return -ENODEV;
1135
1136                 urb = alloc_isoc_urb(hdev, skb);
1137                 if (IS_ERR(urb))
1138                         return PTR_ERR(urb);
1139
1140                 hdev->stat.sco_tx++;
1141                 return submit_tx_urb(hdev, urb);
1142         }
1143
1144         return -EILSEQ;
1145 }
1146
1147 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1148 {
1149         struct btusb_data *data = hci_get_drvdata(hdev);
1150
1151         BT_DBG("%s evt %d", hdev->name, evt);
1152
1153         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1154                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1155                 schedule_work(&data->work);
1156         }
1157 }
1158
1159 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1160 {
1161         struct btusb_data *data = hci_get_drvdata(hdev);
1162         struct usb_interface *intf = data->isoc;
1163         struct usb_endpoint_descriptor *ep_desc;
1164         int i, err;
1165
1166         if (!data->isoc)
1167                 return -ENODEV;
1168
1169         err = usb_set_interface(data->udev, 1, altsetting);
1170         if (err < 0) {
1171                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
1172                 return err;
1173         }
1174
1175         data->isoc_altsetting = altsetting;
1176
1177         data->isoc_tx_ep = NULL;
1178         data->isoc_rx_ep = NULL;
1179
1180         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1181                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1182
1183                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1184                         data->isoc_tx_ep = ep_desc;
1185                         continue;
1186                 }
1187
1188                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1189                         data->isoc_rx_ep = ep_desc;
1190                         continue;
1191                 }
1192         }
1193
1194         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1195                 BT_ERR("%s invalid SCO descriptors", hdev->name);
1196                 return -ENODEV;
1197         }
1198
1199         return 0;
1200 }
1201
1202 static void btusb_work(struct work_struct *work)
1203 {
1204         struct btusb_data *data = container_of(work, struct btusb_data, work);
1205         struct hci_dev *hdev = data->hdev;
1206         int new_alts;
1207         int err;
1208
1209         if (data->sco_num > 0) {
1210                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1211                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1212                         if (err < 0) {
1213                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1214                                 usb_kill_anchored_urbs(&data->isoc_anchor);
1215                                 return;
1216                         }
1217
1218                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1219                 }
1220
1221                 if (hdev->voice_setting & 0x0020) {
1222                         static const int alts[3] = { 2, 4, 5 };
1223
1224                         new_alts = alts[data->sco_num - 1];
1225                 } else {
1226                         new_alts = data->sco_num;
1227                 }
1228
1229                 if (data->isoc_altsetting != new_alts) {
1230                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1231                         usb_kill_anchored_urbs(&data->isoc_anchor);
1232
1233                         if (__set_isoc_interface(hdev, new_alts) < 0)
1234                                 return;
1235                 }
1236
1237                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1238                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1239                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1240                         else
1241                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1242                 }
1243         } else {
1244                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1245                 usb_kill_anchored_urbs(&data->isoc_anchor);
1246
1247                 __set_isoc_interface(hdev, 0);
1248                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1249                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1250         }
1251 }
1252
1253 static void btusb_waker(struct work_struct *work)
1254 {
1255         struct btusb_data *data = container_of(work, struct btusb_data, waker);
1256         int err;
1257
1258         err = usb_autopm_get_interface(data->intf);
1259         if (err < 0)
1260                 return;
1261
1262         usb_autopm_put_interface(data->intf);
1263 }
1264
1265 static int btusb_setup_bcm92035(struct hci_dev *hdev)
1266 {
1267         struct sk_buff *skb;
1268         u8 val = 0x00;
1269
1270         BT_DBG("%s", hdev->name);
1271
1272         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1273         if (IS_ERR(skb))
1274                 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
1275         else
1276                 kfree_skb(skb);
1277
1278         return 0;
1279 }
1280
1281 static int btusb_setup_csr(struct hci_dev *hdev)
1282 {
1283         struct hci_rp_read_local_version *rp;
1284         struct sk_buff *skb;
1285         int ret;
1286
1287         BT_DBG("%s", hdev->name);
1288
1289         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1290                              HCI_INIT_TIMEOUT);
1291         if (IS_ERR(skb)) {
1292                 BT_ERR("Reading local version failed (%ld)", -PTR_ERR(skb));
1293                 return -PTR_ERR(skb);
1294         }
1295
1296         rp = (struct hci_rp_read_local_version *)skb->data;
1297
1298         if (!rp->status) {
1299                 if (le16_to_cpu(rp->manufacturer) != 10) {
1300                         /* Clear the reset quirk since this is not an actual
1301                          * early Bluetooth 1.1 device from CSR.
1302                          */
1303                         clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1304
1305                         /* These fake CSR controllers have all a broken
1306                          * stored link key handling and so just disable it.
1307                          */
1308                         set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY,
1309                                 &hdev->quirks);
1310                 }
1311         }
1312
1313         ret = -bt_to_errno(rp->status);
1314
1315         kfree_skb(skb);
1316
1317         return ret;
1318 }
1319
1320 struct intel_version {
1321         u8 status;
1322         u8 hw_platform;
1323         u8 hw_variant;
1324         u8 hw_revision;
1325         u8 fw_variant;
1326         u8 fw_revision;
1327         u8 fw_build_num;
1328         u8 fw_build_ww;
1329         u8 fw_build_yy;
1330         u8 fw_patch_num;
1331 } __packed;
1332
1333 struct intel_boot_params {
1334         __u8     status;
1335         __u8     otp_format;
1336         __u8     otp_content;
1337         __u8     otp_patch;
1338         __le16   dev_revid;
1339         __u8     secure_boot;
1340         __u8     key_from_hdr;
1341         __u8     key_type;
1342         __u8     otp_lock;
1343         __u8     api_lock;
1344         __u8     debug_lock;
1345         bdaddr_t otp_bdaddr;
1346         __u8     min_fw_build_nn;
1347         __u8     min_fw_build_cw;
1348         __u8     min_fw_build_yy;
1349         __u8     limited_cce;
1350         __u8     unlocked_state;
1351 } __packed;
1352
1353 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1354                                                        struct intel_version *ver)
1355 {
1356         const struct firmware *fw;
1357         char fwname[64];
1358         int ret;
1359
1360         snprintf(fwname, sizeof(fwname),
1361                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1362                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
1363                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1364                  ver->fw_build_ww, ver->fw_build_yy);
1365
1366         ret = request_firmware(&fw, fwname, &hdev->dev);
1367         if (ret < 0) {
1368                 if (ret == -EINVAL) {
1369                         BT_ERR("%s Intel firmware file request failed (%d)",
1370                                hdev->name, ret);
1371                         return NULL;
1372                 }
1373
1374                 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1375                        hdev->name, fwname, ret);
1376
1377                 /* If the correct firmware patch file is not found, use the
1378                  * default firmware patch file instead
1379                  */
1380                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1381                          ver->hw_platform, ver->hw_variant);
1382                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1383                         BT_ERR("%s failed to open default Intel fw file: %s",
1384                                hdev->name, fwname);
1385                         return NULL;
1386                 }
1387         }
1388
1389         BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1390
1391         return fw;
1392 }
1393
1394 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1395                                       const struct firmware *fw,
1396                                       const u8 **fw_ptr, int *disable_patch)
1397 {
1398         struct sk_buff *skb;
1399         struct hci_command_hdr *cmd;
1400         const u8 *cmd_param;
1401         struct hci_event_hdr *evt = NULL;
1402         const u8 *evt_param = NULL;
1403         int remain = fw->size - (*fw_ptr - fw->data);
1404
1405         /* The first byte indicates the types of the patch command or event.
1406          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1407          * in the current firmware buffer doesn't start with 0x01 or
1408          * the size of remain buffer is smaller than HCI command header,
1409          * the firmware file is corrupted and it should stop the patching
1410          * process.
1411          */
1412         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1413                 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1414                 return -EINVAL;
1415         }
1416         (*fw_ptr)++;
1417         remain--;
1418
1419         cmd = (struct hci_command_hdr *)(*fw_ptr);
1420         *fw_ptr += sizeof(*cmd);
1421         remain -= sizeof(*cmd);
1422
1423         /* Ensure that the remain firmware data is long enough than the length
1424          * of command parameter. If not, the firmware file is corrupted.
1425          */
1426         if (remain < cmd->plen) {
1427                 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1428                 return -EFAULT;
1429         }
1430
1431         /* If there is a command that loads a patch in the firmware
1432          * file, then enable the patch upon success, otherwise just
1433          * disable the manufacturer mode, for example patch activation
1434          * is not required when the default firmware patch file is used
1435          * because there are no patch data to load.
1436          */
1437         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1438                 *disable_patch = 0;
1439
1440         cmd_param = *fw_ptr;
1441         *fw_ptr += cmd->plen;
1442         remain -= cmd->plen;
1443
1444         /* This reads the expected events when the above command is sent to the
1445          * device. Some vendor commands expects more than one events, for
1446          * example command status event followed by vendor specific event.
1447          * For this case, it only keeps the last expected event. so the command
1448          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1449          * last expected event.
1450          */
1451         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1452                 (*fw_ptr)++;
1453                 remain--;
1454
1455                 evt = (struct hci_event_hdr *)(*fw_ptr);
1456                 *fw_ptr += sizeof(*evt);
1457                 remain -= sizeof(*evt);
1458
1459                 if (remain < evt->plen) {
1460                         BT_ERR("%s Intel fw corrupted: invalid evt len",
1461                                hdev->name);
1462                         return -EFAULT;
1463                 }
1464
1465                 evt_param = *fw_ptr;
1466                 *fw_ptr += evt->plen;
1467                 remain -= evt->plen;
1468         }
1469
1470         /* Every HCI commands in the firmware file has its correspond event.
1471          * If event is not found or remain is smaller than zero, the firmware
1472          * file is corrupted.
1473          */
1474         if (!evt || !evt_param || remain < 0) {
1475                 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1476                 return -EFAULT;
1477         }
1478
1479         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1480                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1481         if (IS_ERR(skb)) {
1482                 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1483                        hdev->name, cmd->opcode, PTR_ERR(skb));
1484                 return PTR_ERR(skb);
1485         }
1486
1487         /* It ensures that the returned event matches the event data read from
1488          * the firmware file. At fist, it checks the length and then
1489          * the contents of the event.
1490          */
1491         if (skb->len != evt->plen) {
1492                 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1493                        le16_to_cpu(cmd->opcode));
1494                 kfree_skb(skb);
1495                 return -EFAULT;
1496         }
1497
1498         if (memcmp(skb->data, evt_param, evt->plen)) {
1499                 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1500                        hdev->name, le16_to_cpu(cmd->opcode));
1501                 kfree_skb(skb);
1502                 return -EFAULT;
1503         }
1504         kfree_skb(skb);
1505
1506         return 0;
1507 }
1508
1509 #define BDADDR_INTEL (&(bdaddr_t) {{0x00, 0x8b, 0x9e, 0x19, 0x03, 0x00}})
1510
1511 static int btusb_check_bdaddr_intel(struct hci_dev *hdev)
1512 {
1513         struct sk_buff *skb;
1514         struct hci_rp_read_bd_addr *rp;
1515
1516         skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
1517                              HCI_INIT_TIMEOUT);
1518         if (IS_ERR(skb)) {
1519                 BT_ERR("%s reading Intel device address failed (%ld)",
1520                        hdev->name, PTR_ERR(skb));
1521                 return PTR_ERR(skb);
1522         }
1523
1524         if (skb->len != sizeof(*rp)) {
1525                 BT_ERR("%s Intel device address length mismatch", hdev->name);
1526                 kfree_skb(skb);
1527                 return -EIO;
1528         }
1529
1530         rp = (struct hci_rp_read_bd_addr *)skb->data;
1531         if (rp->status) {
1532                 BT_ERR("%s Intel device address result failed (%02x)",
1533                        hdev->name, rp->status);
1534                 kfree_skb(skb);
1535                 return -bt_to_errno(rp->status);
1536         }
1537
1538         /* For some Intel based controllers, the default Bluetooth device
1539          * address 00:03:19:9E:8B:00 can be found. These controllers are
1540          * fully operational, but have the danger of duplicate addresses
1541          * and that in turn can cause problems with Bluetooth operation.
1542          */
1543         if (!bacmp(&rp->bdaddr, BDADDR_INTEL)) {
1544                 BT_ERR("%s found Intel default device address (%pMR)",
1545                        hdev->name, &rp->bdaddr);
1546                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
1547         }
1548
1549         kfree_skb(skb);
1550
1551         return 0;
1552 }
1553
1554 static int btusb_setup_intel(struct hci_dev *hdev)
1555 {
1556         struct sk_buff *skb;
1557         const struct firmware *fw;
1558         const u8 *fw_ptr;
1559         int disable_patch;
1560         struct intel_version *ver;
1561
1562         const u8 mfg_enable[] = { 0x01, 0x00 };
1563         const u8 mfg_disable[] = { 0x00, 0x00 };
1564         const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
1565         const u8 mfg_reset_activate[] = { 0x00, 0x02 };
1566
1567         BT_DBG("%s", hdev->name);
1568
1569         /* The controller has a bug with the first HCI command sent to it
1570          * returning number of completed commands as zero. This would stall the
1571          * command processing in the Bluetooth core.
1572          *
1573          * As a workaround, send HCI Reset command first which will reset the
1574          * number of completed commands and allow normal command processing
1575          * from now on.
1576          */
1577         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1578         if (IS_ERR(skb)) {
1579                 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1580                        hdev->name, PTR_ERR(skb));
1581                 return PTR_ERR(skb);
1582         }
1583         kfree_skb(skb);
1584
1585         /* Read Intel specific controller version first to allow selection of
1586          * which firmware file to load.
1587          *
1588          * The returned information are hardware variant and revision plus
1589          * firmware variant, revision and build number.
1590          */
1591         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1592         if (IS_ERR(skb)) {
1593                 BT_ERR("%s reading Intel fw version command failed (%ld)",
1594                        hdev->name, PTR_ERR(skb));
1595                 return PTR_ERR(skb);
1596         }
1597
1598         if (skb->len != sizeof(*ver)) {
1599                 BT_ERR("%s Intel version event length mismatch", hdev->name);
1600                 kfree_skb(skb);
1601                 return -EIO;
1602         }
1603
1604         ver = (struct intel_version *)skb->data;
1605         if (ver->status) {
1606                 BT_ERR("%s Intel fw version event failed (%02x)", hdev->name,
1607                        ver->status);
1608                 kfree_skb(skb);
1609                 return -bt_to_errno(ver->status);
1610         }
1611
1612         BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1613                 hdev->name, ver->hw_platform, ver->hw_variant,
1614                 ver->hw_revision, ver->fw_variant,  ver->fw_revision,
1615                 ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
1616                 ver->fw_patch_num);
1617
1618         /* fw_patch_num indicates the version of patch the device currently
1619          * have. If there is no patch data in the device, it is always 0x00.
1620          * So, if it is other than 0x00, no need to patch the deivce again.
1621          */
1622         if (ver->fw_patch_num) {
1623                 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1624                         hdev->name, ver->fw_patch_num);
1625                 kfree_skb(skb);
1626                 btusb_check_bdaddr_intel(hdev);
1627                 return 0;
1628         }
1629
1630         /* Opens the firmware patch file based on the firmware version read
1631          * from the controller. If it fails to open the matching firmware
1632          * patch file, it tries to open the default firmware patch file.
1633          * If no patch file is found, allow the device to operate without
1634          * a patch.
1635          */
1636         fw = btusb_setup_intel_get_fw(hdev, ver);
1637         if (!fw) {
1638                 kfree_skb(skb);
1639                 btusb_check_bdaddr_intel(hdev);
1640                 return 0;
1641         }
1642         fw_ptr = fw->data;
1643
1644         /* This Intel specific command enables the manufacturer mode of the
1645          * controller.
1646          *
1647          * Only while this mode is enabled, the driver can download the
1648          * firmware patch data and configuration parameters.
1649          */
1650         skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
1651         if (IS_ERR(skb)) {
1652                 BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
1653                        hdev->name, PTR_ERR(skb));
1654                 release_firmware(fw);
1655                 return PTR_ERR(skb);
1656         }
1657
1658         if (skb->data[0]) {
1659                 u8 evt_status = skb->data[0];
1660
1661                 BT_ERR("%s enable Intel manufacturer mode event failed (%02x)",
1662                        hdev->name, evt_status);
1663                 kfree_skb(skb);
1664                 release_firmware(fw);
1665                 return -bt_to_errno(evt_status);
1666         }
1667         kfree_skb(skb);
1668
1669         disable_patch = 1;
1670
1671         /* The firmware data file consists of list of Intel specific HCI
1672          * commands and its expected events. The first byte indicates the
1673          * type of the message, either HCI command or HCI event.
1674          *
1675          * It reads the command and its expected event from the firmware file,
1676          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1677          * the returned event is compared with the event read from the firmware
1678          * file and it will continue until all the messages are downloaded to
1679          * the controller.
1680          *
1681          * Once the firmware patching is completed successfully,
1682          * the manufacturer mode is disabled with reset and activating the
1683          * downloaded patch.
1684          *
1685          * If the firmware patching fails, the manufacturer mode is
1686          * disabled with reset and deactivating the patch.
1687          *
1688          * If the default patch file is used, no reset is done when disabling
1689          * the manufacturer.
1690          */
1691         while (fw->size > fw_ptr - fw->data) {
1692                 int ret;
1693
1694                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1695                                                  &disable_patch);
1696                 if (ret < 0)
1697                         goto exit_mfg_deactivate;
1698         }
1699
1700         release_firmware(fw);
1701
1702         if (disable_patch)
1703                 goto exit_mfg_disable;
1704
1705         /* Patching completed successfully and disable the manufacturer mode
1706          * with reset and activate the downloaded firmware patches.
1707          */
1708         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
1709                              mfg_reset_activate, HCI_INIT_TIMEOUT);
1710         if (IS_ERR(skb)) {
1711                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1712                        hdev->name, PTR_ERR(skb));
1713                 return PTR_ERR(skb);
1714         }
1715         kfree_skb(skb);
1716
1717         BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1718                 hdev->name);
1719
1720         btusb_check_bdaddr_intel(hdev);
1721         return 0;
1722
1723 exit_mfg_disable:
1724         /* Disable the manufacturer mode without reset */
1725         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
1726                              HCI_INIT_TIMEOUT);
1727         if (IS_ERR(skb)) {
1728                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1729                        hdev->name, PTR_ERR(skb));
1730                 return PTR_ERR(skb);
1731         }
1732         kfree_skb(skb);
1733
1734         BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1735
1736         btusb_check_bdaddr_intel(hdev);
1737         return 0;
1738
1739 exit_mfg_deactivate:
1740         release_firmware(fw);
1741
1742         /* Patching failed. Disable the manufacturer mode with reset and
1743          * deactivate the downloaded firmware patches.
1744          */
1745         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
1746                              mfg_reset_deactivate, HCI_INIT_TIMEOUT);
1747         if (IS_ERR(skb)) {
1748                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1749                        hdev->name, PTR_ERR(skb));
1750                 return PTR_ERR(skb);
1751         }
1752         kfree_skb(skb);
1753
1754         BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1755                 hdev->name);
1756
1757         btusb_check_bdaddr_intel(hdev);
1758         return 0;
1759 }
1760
1761 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
1762 {
1763         struct sk_buff *skb;
1764         struct hci_event_hdr *hdr;
1765         struct hci_ev_cmd_complete *evt;
1766
1767         skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_ATOMIC);
1768         if (!skb)
1769                 return -ENOMEM;
1770
1771         hdr = (struct hci_event_hdr *)skb_put(skb, sizeof(*hdr));
1772         hdr->evt = HCI_EV_CMD_COMPLETE;
1773         hdr->plen = sizeof(*evt) + 1;
1774
1775         evt = (struct hci_ev_cmd_complete *)skb_put(skb, sizeof(*evt));
1776         evt->ncmd = 0x01;
1777         evt->opcode = cpu_to_le16(opcode);
1778
1779         *skb_put(skb, 1) = 0x00;
1780
1781         bt_cb(skb)->pkt_type = HCI_EVENT_PKT;
1782
1783         return hci_recv_frame(hdev, skb);
1784 }
1785
1786 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
1787                                  int count)
1788 {
1789         /* When the device is in bootloader mode, then it can send
1790          * events via the bulk endpoint. These events are treated the
1791          * same way as the ones received from the interrupt endpoint.
1792          */
1793         if (test_bit(BTUSB_BOOTLOADER, &data->flags))
1794                 return btusb_recv_intr(data, buffer, count);
1795
1796         return btusb_recv_bulk(data, buffer, count);
1797 }
1798
1799 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
1800 {
1801         struct btusb_data *data = hci_get_drvdata(hdev);
1802
1803         if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1804                 struct hci_event_hdr *hdr = (void *)skb->data;
1805
1806                 /* When the firmware loading completes the device sends
1807                  * out a vendor specific event indicating the result of
1808                  * the firmware loading.
1809                  */
1810                 if (skb->len == 7 && hdr->evt == 0xff && hdr->plen == 0x05 &&
1811                     skb->data[2] == 0x06) {
1812                         if (skb->data[3] != 0x00)
1813                                 test_bit(BTUSB_FIRMWARE_FAILED, &data->flags);
1814
1815                         if (test_and_clear_bit(BTUSB_DOWNLOADING,
1816                                                &data->flags) &&
1817                             test_bit(BTUSB_FIRMWARE_LOADED, &data->flags)) {
1818                                 smp_mb__after_atomic();
1819                                 wake_up_bit(&data->flags, BTUSB_DOWNLOADING);
1820                         }
1821                 }
1822
1823                 /* When switching to the operational firmware the device
1824                  * sends a vendor specific event indicating that the bootup
1825                  * completed.
1826                  */
1827                 if (skb->len == 9 && hdr->evt == 0xff && hdr->plen == 0x07 &&
1828                     skb->data[2] == 0x02) {
1829                         if (test_and_clear_bit(BTUSB_BOOTING, &data->flags)) {
1830                                 smp_mb__after_atomic();
1831                                 wake_up_bit(&data->flags, BTUSB_BOOTING);
1832                         }
1833                 }
1834         }
1835
1836         return hci_recv_frame(hdev, skb);
1837 }
1838
1839 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
1840 {
1841         struct btusb_data *data = hci_get_drvdata(hdev);
1842         struct urb *urb;
1843
1844         BT_DBG("%s", hdev->name);
1845
1846         if (!test_bit(HCI_RUNNING, &hdev->flags))
1847                 return -EBUSY;
1848
1849         switch (bt_cb(skb)->pkt_type) {
1850         case HCI_COMMAND_PKT:
1851                 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1852                         struct hci_command_hdr *cmd = (void *)skb->data;
1853                         __u16 opcode = le16_to_cpu(cmd->opcode);
1854
1855                         /* When in bootloader mode and the command 0xfc09
1856                          * is received, it needs to be send down the
1857                          * bulk endpoint. So allocate a bulk URB instead.
1858                          */
1859                         if (opcode == 0xfc09)
1860                                 urb = alloc_bulk_urb(hdev, skb);
1861                         else
1862                                 urb = alloc_ctrl_urb(hdev, skb);
1863
1864                         /* When the 0xfc01 command is issued to boot into
1865                          * the operational firmware, it will actually not
1866                          * send a command complete event. To keep the flow
1867                          * control working inject that event here.
1868                          */
1869                         if (opcode == 0xfc01)
1870                                 inject_cmd_complete(hdev, opcode);
1871                 } else {
1872                         urb = alloc_ctrl_urb(hdev, skb);
1873                 }
1874                 if (IS_ERR(urb))
1875                         return PTR_ERR(urb);
1876
1877                 hdev->stat.cmd_tx++;
1878                 return submit_or_queue_tx_urb(hdev, urb);
1879
1880         case HCI_ACLDATA_PKT:
1881                 urb = alloc_bulk_urb(hdev, skb);
1882                 if (IS_ERR(urb))
1883                         return PTR_ERR(urb);
1884
1885                 hdev->stat.acl_tx++;
1886                 return submit_or_queue_tx_urb(hdev, urb);
1887
1888         case HCI_SCODATA_PKT:
1889                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1890                         return -ENODEV;
1891
1892                 urb = alloc_isoc_urb(hdev, skb);
1893                 if (IS_ERR(urb))
1894                         return PTR_ERR(urb);
1895
1896                 hdev->stat.sco_tx++;
1897                 return submit_tx_urb(hdev, urb);
1898         }
1899
1900         return -EILSEQ;
1901 }
1902
1903 static int btusb_intel_secure_send(struct hci_dev *hdev, u8 fragment_type,
1904                                    u32 plen, const void *param)
1905 {
1906         while (plen > 0) {
1907                 struct sk_buff *skb;
1908                 u8 cmd_param[253], fragment_len = (plen > 252) ? 252 : plen;
1909
1910                 cmd_param[0] = fragment_type;
1911                 memcpy(cmd_param + 1, param, fragment_len);
1912
1913                 skb = __hci_cmd_sync(hdev, 0xfc09, fragment_len + 1,
1914                                      cmd_param, HCI_INIT_TIMEOUT);
1915                 if (IS_ERR(skb))
1916                         return PTR_ERR(skb);
1917
1918                 kfree_skb(skb);
1919
1920                 plen -= fragment_len;
1921                 param += fragment_len;
1922         }
1923
1924         return 0;
1925 }
1926
1927 static void btusb_intel_version_info(struct hci_dev *hdev,
1928                                      struct intel_version *ver)
1929 {
1930         const char *variant;
1931
1932         switch (ver->fw_variant) {
1933         case 0x06:
1934                 variant = "Bootloader";
1935                 break;
1936         case 0x23:
1937                 variant = "Firmware";
1938                 break;
1939         default:
1940                 return;
1941         }
1942
1943         BT_INFO("%s: %s revision %u.%u build %u week %u %u", hdev->name,
1944                 variant, ver->fw_revision >> 4, ver->fw_revision & 0x0f,
1945                 ver->fw_build_num, ver->fw_build_ww, 2000 + ver->fw_build_yy);
1946 }
1947
1948 static int btusb_setup_intel_new(struct hci_dev *hdev)
1949 {
1950         static const u8 reset_param[] = { 0x00, 0x01, 0x00, 0x01,
1951                                           0x00, 0x08, 0x04, 0x00 };
1952         struct btusb_data *data = hci_get_drvdata(hdev);
1953         struct sk_buff *skb;
1954         struct intel_version *ver;
1955         struct intel_boot_params *params;
1956         const struct firmware *fw;
1957         const u8 *fw_ptr;
1958         char fwname[64];
1959         ktime_t calltime, delta, rettime;
1960         unsigned long long duration;
1961         int err;
1962
1963         BT_DBG("%s", hdev->name);
1964
1965         calltime = ktime_get();
1966
1967         /* Read the Intel version information to determine if the device
1968          * is in bootloader mode or if it already has operational firmware
1969          * loaded.
1970          */
1971         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1972         if (IS_ERR(skb)) {
1973                 BT_ERR("%s: Reading Intel version information failed (%ld)",
1974                        hdev->name, PTR_ERR(skb));
1975                 return PTR_ERR(skb);
1976         }
1977
1978         if (skb->len != sizeof(*ver)) {
1979                 BT_ERR("%s: Intel version event size mismatch", hdev->name);
1980                 kfree_skb(skb);
1981                 return -EILSEQ;
1982         }
1983
1984         ver = (struct intel_version *)skb->data;
1985         if (ver->status) {
1986                 BT_ERR("%s: Intel version command failure (%02x)",
1987                        hdev->name, ver->status);
1988                 err = -bt_to_errno(ver->status);
1989                 kfree_skb(skb);
1990                 return err;
1991         }
1992
1993         /* The hardware platform number has a fixed value of 0x37 and
1994          * for now only accept this single value.
1995          */
1996         if (ver->hw_platform != 0x37) {
1997                 BT_ERR("%s: Unsupported Intel hardware platform (%u)",
1998                        hdev->name, ver->hw_platform);
1999                 kfree_skb(skb);
2000                 return -EINVAL;
2001         }
2002
2003         /* At the moment only the hardware variant iBT 3.0 (LnP/SfP) is
2004          * supported by this firmware loading method. This check has been
2005          * put in place to ensure correct forward compatibility options
2006          * when newer hardware variants come along.
2007          */
2008         if (ver->hw_variant != 0x0b) {
2009                 BT_ERR("%s: Unsupported Intel hardware variant (%u)",
2010                        hdev->name, ver->hw_variant);
2011                 kfree_skb(skb);
2012                 return -EINVAL;
2013         }
2014
2015         btusb_intel_version_info(hdev, ver);
2016
2017         /* The firmware variant determines if the device is in bootloader
2018          * mode or is running operational firmware. The value 0x06 identifies
2019          * the bootloader and the value 0x23 identifies the operational
2020          * firmware.
2021          *
2022          * When the operational firmware is already present, then only
2023          * the check for valid Bluetooth device address is needed. This
2024          * determines if the device will be added as configured or
2025          * unconfigured controller.
2026          *
2027          * It is not possible to use the Secure Boot Parameters in this
2028          * case since that command is only available in bootloader mode.
2029          */
2030         if (ver->fw_variant == 0x23) {
2031                 kfree_skb(skb);
2032                 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2033                 btusb_check_bdaddr_intel(hdev);
2034                 return 0;
2035         }
2036
2037         /* If the device is not in bootloader mode, then the only possible
2038          * choice is to return an error and abort the device initialization.
2039          */
2040         if (ver->fw_variant != 0x06) {
2041                 BT_ERR("%s: Unsupported Intel firmware variant (%u)",
2042                        hdev->name, ver->fw_variant);
2043                 kfree_skb(skb);
2044                 return -ENODEV;
2045         }
2046
2047         kfree_skb(skb);
2048
2049         /* Read the secure boot parameters to identify the operating
2050          * details of the bootloader.
2051          */
2052         skb = __hci_cmd_sync(hdev, 0xfc0d, 0, NULL, HCI_INIT_TIMEOUT);
2053         if (IS_ERR(skb)) {
2054                 BT_ERR("%s: Reading Intel boot parameters failed (%ld)",
2055                        hdev->name, PTR_ERR(skb));
2056                 return PTR_ERR(skb);
2057         }
2058
2059         if (skb->len != sizeof(*params)) {
2060                 BT_ERR("%s: Intel boot parameters size mismatch", hdev->name);
2061                 kfree_skb(skb);
2062                 return -EILSEQ;
2063         }
2064
2065         params = (struct intel_boot_params *)skb->data;
2066         if (params->status) {
2067                 BT_ERR("%s: Intel boot parameters command failure (%02x)",
2068                        hdev->name, params->status);
2069                 err = -bt_to_errno(params->status);
2070                 kfree_skb(skb);
2071                 return err;
2072         }
2073
2074         BT_INFO("%s: Device revision is %u", hdev->name,
2075                 le16_to_cpu(params->dev_revid));
2076
2077         BT_INFO("%s: Secure boot is %s", hdev->name,
2078                 params->secure_boot ? "enabled" : "disabled");
2079
2080         BT_INFO("%s: Minimum firmware build %u week %u %u", hdev->name,
2081                 params->min_fw_build_nn, params->min_fw_build_cw,
2082                 2000 + params->min_fw_build_yy);
2083
2084         /* It is required that every single firmware fragment is acknowledged
2085          * with a command complete event. If the boot parameters indicate
2086          * that this bootloader does not send them, then abort the setup.
2087          */
2088         if (params->limited_cce != 0x00) {
2089                 BT_ERR("%s: Unsupported Intel firmware loading method (%u)",
2090                        hdev->name, params->limited_cce);
2091                 kfree_skb(skb);
2092                 return -EINVAL;
2093         }
2094
2095         /* If the OTP has no valid Bluetooth device address, then there will
2096          * also be no valid address for the operational firmware.
2097          */
2098         if (!bacmp(&params->otp_bdaddr, BDADDR_ANY)) {
2099                 BT_INFO("%s: No device address configured", hdev->name);
2100                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2101         }
2102
2103         /* With this Intel bootloader only the hardware variant and device
2104          * revision information are used to select the right firmware.
2105          *
2106          * Currently this bootloader support is limited to hardware variant
2107          * iBT 3.0 (LnP/SfP) which is identified by the value 11 (0x0b).
2108          */
2109         snprintf(fwname, sizeof(fwname), "intel/ibt-11-%u.sfi",
2110                  le16_to_cpu(params->dev_revid));
2111
2112         err = request_firmware(&fw, fwname, &hdev->dev);
2113         if (err < 0) {
2114                 BT_ERR("%s: Failed to load Intel firmware file (%d)",
2115                        hdev->name, err);
2116                 kfree_skb(skb);
2117                 return err;
2118         }
2119
2120         BT_INFO("%s: Found device firmware: %s", hdev->name, fwname);
2121
2122         kfree_skb(skb);
2123
2124         if (fw->size < 644) {
2125                 BT_ERR("%s: Invalid size of firmware file (%zu)",
2126                        hdev->name, fw->size);
2127                 err = -EBADF;
2128                 goto done;
2129         }
2130
2131         set_bit(BTUSB_DOWNLOADING, &data->flags);
2132
2133         /* Start the firmware download transaction with the Init fragment
2134          * represented by the 128 bytes of CSS header.
2135          */
2136         err = btusb_intel_secure_send(hdev, 0x00, 128, fw->data);
2137         if (err < 0) {
2138                 BT_ERR("%s: Failed to send firmware header (%d)",
2139                        hdev->name, err);
2140                 goto done;
2141         }
2142
2143         /* Send the 256 bytes of public key information from the firmware
2144          * as the PKey fragment.
2145          */
2146         err = btusb_intel_secure_send(hdev, 0x03, 256, fw->data + 128);
2147         if (err < 0) {
2148                 BT_ERR("%s: Failed to send firmware public key (%d)",
2149                        hdev->name, err);
2150                 goto done;
2151         }
2152
2153         /* Send the 256 bytes of signature information from the firmware
2154          * as the Sign fragment.
2155          */
2156         err = btusb_intel_secure_send(hdev, 0x02, 256, fw->data + 388);
2157         if (err < 0) {
2158                 BT_ERR("%s: Failed to send firmware signature (%d)",
2159                        hdev->name, err);
2160                 goto done;
2161         }
2162
2163         fw_ptr = fw->data + 644;
2164
2165         while (fw_ptr - fw->data < fw->size) {
2166                 struct hci_command_hdr *cmd = (void *)fw_ptr;
2167                 u8 cmd_len;
2168
2169                 cmd_len = sizeof(*cmd) + cmd->plen;
2170
2171                 /* Send each command from the firmware data buffer as
2172                  * a single Data fragment.
2173                  */
2174                 err = btusb_intel_secure_send(hdev, 0x01, cmd_len, fw_ptr);
2175                 if (err < 0) {
2176                         BT_ERR("%s: Failed to send firmware data (%d)",
2177                                hdev->name, err);
2178                         goto done;
2179                 }
2180
2181                 fw_ptr += cmd_len;
2182         }
2183
2184         set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2185
2186         BT_INFO("%s: Waiting for firmware download to complete", hdev->name);
2187
2188         /* Before switching the device into operational mode and with that
2189          * booting the loaded firmware, wait for the bootloader notification
2190          * that all fragments have been successfully received.
2191          *
2192          * When the event processing receives the notification, then the
2193          * BTUSB_DOWNLOADING flag will be cleared.
2194          *
2195          * The firmware loading should not take longer than 5 seconds
2196          * and thus just timeout if that happens and fail the setup
2197          * of this device.
2198          */
2199         err = btusb_wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
2200                                         msecs_to_jiffies(5000),
2201                                         TASK_INTERRUPTIBLE);
2202         if (err == 1) {
2203                 BT_ERR("%s: Firmware loading interrupted", hdev->name);
2204                 err = -EINTR;
2205                 goto done;
2206         }
2207
2208         if (err) {
2209                 BT_ERR("%s: Firmware loading timeout", hdev->name);
2210                 err = -ETIMEDOUT;
2211                 goto done;
2212         }
2213
2214         if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) {
2215                 BT_ERR("%s: Firmware loading failed", hdev->name);
2216                 err = -ENOEXEC;
2217                 goto done;
2218         }
2219
2220         rettime = ktime_get();
2221         delta = ktime_sub(rettime, calltime);
2222         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2223
2224         BT_INFO("%s: Firmware loaded in %llu usecs", hdev->name, duration);
2225
2226 done:
2227         release_firmware(fw);
2228
2229         if (err < 0)
2230                 return err;
2231
2232         calltime = ktime_get();
2233
2234         set_bit(BTUSB_BOOTING, &data->flags);
2235
2236         skb = __hci_cmd_sync(hdev, 0xfc01, sizeof(reset_param), reset_param,
2237                              HCI_INIT_TIMEOUT);
2238         if (IS_ERR(skb))
2239                 return PTR_ERR(skb);
2240
2241         kfree_skb(skb);
2242
2243         /* The bootloader will not indicate when the device is ready. This
2244          * is done by the operational firmware sending bootup notification.
2245          *
2246          * Booting into operational firmware should not take longer than
2247          * 1 second. However if that happens, then just fail the setup
2248          * since something went wrong.
2249          */
2250         BT_INFO("%s: Waiting for device to boot", hdev->name);
2251
2252         err = btusb_wait_on_bit_timeout(&data->flags, BTUSB_BOOTING,
2253                                         msecs_to_jiffies(1000),
2254                                         TASK_INTERRUPTIBLE);
2255
2256         if (err == 1) {
2257                 BT_ERR("%s: Device boot interrupted", hdev->name);
2258                 return -EINTR;
2259         }
2260
2261         if (err) {
2262                 BT_ERR("%s: Device boot timeout", hdev->name);
2263                 return -ETIMEDOUT;
2264         }
2265
2266         rettime = ktime_get();
2267         delta = ktime_sub(rettime, calltime);
2268         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2269
2270         BT_INFO("%s: Device booted in %llu usecs", hdev->name, duration);
2271
2272         clear_bit(BTUSB_BOOTLOADER, &data->flags);
2273
2274         return 0;
2275 }
2276
2277 static void btusb_hw_error_intel(struct hci_dev *hdev, u8 code)
2278 {
2279         struct sk_buff *skb;
2280         u8 type = 0x00;
2281
2282         BT_ERR("%s: Hardware error 0x%2.2x", hdev->name, code);
2283
2284         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2285         if (IS_ERR(skb)) {
2286                 BT_ERR("%s: Reset after hardware error failed (%ld)",
2287                        hdev->name, PTR_ERR(skb));
2288                 return;
2289         }
2290         kfree_skb(skb);
2291
2292         skb = __hci_cmd_sync(hdev, 0xfc22, 1, &type, HCI_INIT_TIMEOUT);
2293         if (IS_ERR(skb)) {
2294                 BT_ERR("%s: Retrieving Intel exception info failed (%ld)",
2295                        hdev->name, PTR_ERR(skb));
2296                 return;
2297         }
2298
2299         if (skb->len != 13) {
2300                 BT_ERR("%s: Exception info size mismatch", hdev->name);
2301                 kfree_skb(skb);
2302                 return;
2303         }
2304
2305         if (skb->data[0] != 0x00) {
2306                 BT_ERR("%s: Exception info command failure (%02x)",
2307                        hdev->name, skb->data[0]);
2308                 kfree_skb(skb);
2309                 return;
2310         }
2311
2312         BT_ERR("%s: Exception info %s", hdev->name, (char *)(skb->data + 1));
2313
2314         kfree_skb(skb);
2315 }
2316
2317 static int btusb_set_bdaddr_intel(struct hci_dev *hdev, const bdaddr_t *bdaddr)
2318 {
2319         struct sk_buff *skb;
2320         long ret;
2321
2322         skb = __hci_cmd_sync(hdev, 0xfc31, 6, bdaddr, HCI_INIT_TIMEOUT);
2323         if (IS_ERR(skb)) {
2324                 ret = PTR_ERR(skb);
2325                 BT_ERR("%s: changing Intel device address failed (%ld)",
2326                        hdev->name, ret);
2327                 return ret;
2328         }
2329         kfree_skb(skb);
2330
2331         return 0;
2332 }
2333
2334 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
2335                                     const bdaddr_t *bdaddr)
2336 {
2337         struct sk_buff *skb;
2338         u8 buf[8];
2339         long ret;
2340
2341         buf[0] = 0xfe;
2342         buf[1] = sizeof(bdaddr_t);
2343         memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
2344
2345         skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2346         if (IS_ERR(skb)) {
2347                 ret = PTR_ERR(skb);
2348                 BT_ERR("%s: changing Marvell device address failed (%ld)",
2349                        hdev->name, ret);
2350                 return ret;
2351         }
2352         kfree_skb(skb);
2353
2354         return 0;
2355 }
2356
2357 #define BDADDR_BCM20702A0 (&(bdaddr_t) {{0x00, 0xa0, 0x02, 0x70, 0x20, 0x00}})
2358
2359 static int btusb_setup_bcm_patchram(struct hci_dev *hdev)
2360 {
2361         struct btusb_data *data = hci_get_drvdata(hdev);
2362         struct usb_device *udev = data->udev;
2363         char fw_name[64];
2364         const struct firmware *fw;
2365         const u8 *fw_ptr;
2366         size_t fw_size;
2367         const struct hci_command_hdr *cmd;
2368         const u8 *cmd_param;
2369         u16 opcode;
2370         struct sk_buff *skb;
2371         struct hci_rp_read_local_version *ver;
2372         struct hci_rp_read_bd_addr *bda;
2373         long ret;
2374
2375         snprintf(fw_name, sizeof(fw_name), "brcm/%s-%04x-%04x.hcd",
2376                  udev->product ? udev->product : "BCM",
2377                  le16_to_cpu(udev->descriptor.idVendor),
2378                  le16_to_cpu(udev->descriptor.idProduct));
2379
2380         ret = request_firmware(&fw, fw_name, &hdev->dev);
2381         if (ret < 0) {
2382                 BT_INFO("%s: BCM: patch %s not found", hdev->name, fw_name);
2383                 return 0;
2384         }
2385
2386         /* Reset */
2387         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2388         if (IS_ERR(skb)) {
2389                 ret = PTR_ERR(skb);
2390                 BT_ERR("%s: HCI_OP_RESET failed (%ld)", hdev->name, ret);
2391                 goto done;
2392         }
2393         kfree_skb(skb);
2394
2395         /* Read Local Version Info */
2396         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
2397                              HCI_INIT_TIMEOUT);
2398         if (IS_ERR(skb)) {
2399                 ret = PTR_ERR(skb);
2400                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION failed (%ld)",
2401                        hdev->name, ret);
2402                 goto done;
2403         }
2404
2405         if (skb->len != sizeof(*ver)) {
2406                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION event length mismatch",
2407                        hdev->name);
2408                 kfree_skb(skb);
2409                 ret = -EIO;
2410                 goto done;
2411         }
2412
2413         ver = (struct hci_rp_read_local_version *)skb->data;
2414         BT_INFO("%s: BCM: patching hci_ver=%02x hci_rev=%04x lmp_ver=%02x "
2415                 "lmp_subver=%04x", hdev->name, ver->hci_ver, ver->hci_rev,
2416                 ver->lmp_ver, ver->lmp_subver);
2417         kfree_skb(skb);
2418
2419         /* Start Download */
2420         skb = __hci_cmd_sync(hdev, 0xfc2e, 0, NULL, HCI_INIT_TIMEOUT);
2421         if (IS_ERR(skb)) {
2422                 ret = PTR_ERR(skb);
2423                 BT_ERR("%s: BCM: Download Minidrv command failed (%ld)",
2424                        hdev->name, ret);
2425                 goto reset_fw;
2426         }
2427         kfree_skb(skb);
2428
2429         /* 50 msec delay after Download Minidrv completes */
2430         msleep(50);
2431
2432         fw_ptr = fw->data;
2433         fw_size = fw->size;
2434
2435         while (fw_size >= sizeof(*cmd)) {
2436                 cmd = (struct hci_command_hdr *)fw_ptr;
2437                 fw_ptr += sizeof(*cmd);
2438                 fw_size -= sizeof(*cmd);
2439
2440                 if (fw_size < cmd->plen) {
2441                         BT_ERR("%s: BCM: patch %s is corrupted",
2442                                hdev->name, fw_name);
2443                         ret = -EINVAL;
2444                         goto reset_fw;
2445                 }
2446
2447                 cmd_param = fw_ptr;
2448                 fw_ptr += cmd->plen;
2449                 fw_size -= cmd->plen;
2450
2451                 opcode = le16_to_cpu(cmd->opcode);
2452
2453                 skb = __hci_cmd_sync(hdev, opcode, cmd->plen, cmd_param,
2454                                      HCI_INIT_TIMEOUT);
2455                 if (IS_ERR(skb)) {
2456                         ret = PTR_ERR(skb);
2457                         BT_ERR("%s: BCM: patch command %04x failed (%ld)",
2458                                hdev->name, opcode, ret);
2459                         goto reset_fw;
2460                 }
2461                 kfree_skb(skb);
2462         }
2463
2464         /* 250 msec delay after Launch Ram completes */
2465         msleep(250);
2466
2467 reset_fw:
2468         /* Reset */
2469         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2470         if (IS_ERR(skb)) {
2471                 ret = PTR_ERR(skb);
2472                 BT_ERR("%s: HCI_OP_RESET failed (%ld)", hdev->name, ret);
2473                 goto done;
2474         }
2475         kfree_skb(skb);
2476
2477         /* Read Local Version Info */
2478         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
2479                              HCI_INIT_TIMEOUT);
2480         if (IS_ERR(skb)) {
2481                 ret = PTR_ERR(skb);
2482                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION failed (%ld)",
2483                        hdev->name, ret);
2484                 goto done;
2485         }
2486
2487         if (skb->len != sizeof(*ver)) {
2488                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION event length mismatch",
2489                        hdev->name);
2490                 kfree_skb(skb);
2491                 ret = -EIO;
2492                 goto done;
2493         }
2494
2495         ver = (struct hci_rp_read_local_version *)skb->data;
2496         BT_INFO("%s: BCM: firmware hci_ver=%02x hci_rev=%04x lmp_ver=%02x "
2497                 "lmp_subver=%04x", hdev->name, ver->hci_ver, ver->hci_rev,
2498                 ver->lmp_ver, ver->lmp_subver);
2499         kfree_skb(skb);
2500
2501         /* Read BD Address */
2502         skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
2503                              HCI_INIT_TIMEOUT);
2504         if (IS_ERR(skb)) {
2505                 ret = PTR_ERR(skb);
2506                 BT_ERR("%s: HCI_OP_READ_BD_ADDR failed (%ld)",
2507                        hdev->name, ret);
2508                 goto done;
2509         }
2510
2511         if (skb->len != sizeof(*bda)) {
2512                 BT_ERR("%s: HCI_OP_READ_BD_ADDR event length mismatch",
2513                        hdev->name);
2514                 kfree_skb(skb);
2515                 ret = -EIO;
2516                 goto done;
2517         }
2518
2519         bda = (struct hci_rp_read_bd_addr *)skb->data;
2520         if (bda->status) {
2521                 BT_ERR("%s: HCI_OP_READ_BD_ADDR error status (%02x)",
2522                        hdev->name, bda->status);
2523                 kfree_skb(skb);
2524                 ret = -bt_to_errno(bda->status);
2525                 goto done;
2526         }
2527
2528         /* The address 00:20:70:02:A0:00 indicates a BCM20702A0 controller
2529          * with no configured address.
2530          */
2531         if (!bacmp(&bda->bdaddr, BDADDR_BCM20702A0)) {
2532                 BT_INFO("%s: BCM: using default device address (%pMR)",
2533                         hdev->name, &bda->bdaddr);
2534                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2535         }
2536
2537         kfree_skb(skb);
2538
2539 done:
2540         release_firmware(fw);
2541
2542         return ret;
2543 }
2544
2545 static int btusb_set_bdaddr_bcm(struct hci_dev *hdev, const bdaddr_t *bdaddr)
2546 {
2547         struct sk_buff *skb;
2548         long ret;
2549
2550         skb = __hci_cmd_sync(hdev, 0xfc01, 6, bdaddr, HCI_INIT_TIMEOUT);
2551         if (IS_ERR(skb)) {
2552                 ret = PTR_ERR(skb);
2553                 BT_ERR("%s: BCM: Change address command failed (%ld)",
2554                        hdev->name, ret);
2555                 return ret;
2556         }
2557         kfree_skb(skb);
2558
2559         return 0;
2560 }
2561
2562 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
2563                                     const bdaddr_t *bdaddr)
2564 {
2565         struct sk_buff *skb;
2566         u8 buf[10];
2567         long ret;
2568
2569         buf[0] = 0x01;
2570         buf[1] = 0x01;
2571         buf[2] = 0x00;
2572         buf[3] = sizeof(bdaddr_t);
2573         memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
2574
2575         skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2576         if (IS_ERR(skb)) {
2577                 ret = PTR_ERR(skb);
2578                 BT_ERR("%s: Change address command failed (%ld)",
2579                        hdev->name, ret);
2580                 return ret;
2581         }
2582         kfree_skb(skb);
2583
2584         return 0;
2585 }
2586
2587 static int btusb_probe(struct usb_interface *intf,
2588                        const struct usb_device_id *id)
2589 {
2590         struct usb_endpoint_descriptor *ep_desc;
2591         struct btusb_data *data;
2592         struct hci_dev *hdev;
2593         int i, err;
2594
2595         BT_DBG("intf %p id %p", intf, id);
2596
2597         /* interface numbers are hardcoded in the spec */
2598         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
2599                 return -ENODEV;
2600
2601         if (!id->driver_info) {
2602                 const struct usb_device_id *match;
2603
2604                 match = usb_match_id(intf, blacklist_table);
2605                 if (match)
2606                         id = match;
2607         }
2608
2609         if (id->driver_info == BTUSB_IGNORE)
2610                 return -ENODEV;
2611
2612         if (id->driver_info & BTUSB_ATH3012) {
2613                 struct usb_device *udev = interface_to_usbdev(intf);
2614
2615                 /* Old firmware would otherwise let ath3k driver load
2616                  * patch and sysconfig files */
2617                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
2618                         return -ENODEV;
2619         }
2620
2621         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
2622         if (!data)
2623                 return -ENOMEM;
2624
2625         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2626                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2627
2628                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
2629                         data->intr_ep = ep_desc;
2630                         continue;
2631                 }
2632
2633                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
2634                         data->bulk_tx_ep = ep_desc;
2635                         continue;
2636                 }
2637
2638                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
2639                         data->bulk_rx_ep = ep_desc;
2640                         continue;
2641                 }
2642         }
2643
2644         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
2645                 return -ENODEV;
2646
2647         if (id->driver_info & BTUSB_AMP) {
2648                 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
2649                 data->cmdreq = 0x2b;
2650         } else {
2651                 data->cmdreq_type = USB_TYPE_CLASS;
2652                 data->cmdreq = 0x00;
2653         }
2654
2655         data->udev = interface_to_usbdev(intf);
2656         data->intf = intf;
2657
2658         INIT_WORK(&data->work, btusb_work);
2659         INIT_WORK(&data->waker, btusb_waker);
2660         init_usb_anchor(&data->deferred);
2661         init_usb_anchor(&data->tx_anchor);
2662         spin_lock_init(&data->txlock);
2663
2664         init_usb_anchor(&data->intr_anchor);
2665         init_usb_anchor(&data->bulk_anchor);
2666         init_usb_anchor(&data->isoc_anchor);
2667         spin_lock_init(&data->rxlock);
2668
2669         if (id->driver_info & BTUSB_INTEL_NEW) {
2670                 data->recv_event = btusb_recv_event_intel;
2671                 data->recv_bulk = btusb_recv_bulk_intel;
2672                 set_bit(BTUSB_BOOTLOADER, &data->flags);
2673         } else {
2674                 data->recv_event = hci_recv_frame;
2675                 data->recv_bulk = btusb_recv_bulk;
2676         }
2677
2678         hdev = hci_alloc_dev();
2679         if (!hdev)
2680                 return -ENOMEM;
2681
2682         hdev->bus = HCI_USB;
2683         hci_set_drvdata(hdev, data);
2684
2685         if (id->driver_info & BTUSB_AMP)
2686                 hdev->dev_type = HCI_AMP;
2687         else
2688                 hdev->dev_type = HCI_BREDR;
2689
2690         data->hdev = hdev;
2691
2692         SET_HCIDEV_DEV(hdev, &intf->dev);
2693
2694         hdev->open   = btusb_open;
2695         hdev->close  = btusb_close;
2696         hdev->flush  = btusb_flush;
2697         hdev->send   = btusb_send_frame;
2698         hdev->notify = btusb_notify;
2699
2700         if (id->driver_info & BTUSB_BCM92035)
2701                 hdev->setup = btusb_setup_bcm92035;
2702
2703         if (id->driver_info & BTUSB_BCM_PATCHRAM) {
2704                 hdev->setup = btusb_setup_bcm_patchram;
2705                 hdev->set_bdaddr = btusb_set_bdaddr_bcm;
2706                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2707         }
2708
2709         if (id->driver_info & BTUSB_INTEL) {
2710                 hdev->setup = btusb_setup_intel;
2711                 hdev->set_bdaddr = btusb_set_bdaddr_intel;
2712                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2713         }
2714
2715         if (id->driver_info & BTUSB_INTEL_NEW) {
2716                 hdev->send = btusb_send_frame_intel;
2717                 hdev->setup = btusb_setup_intel_new;
2718                 hdev->hw_error = btusb_hw_error_intel;
2719                 hdev->set_bdaddr = btusb_set_bdaddr_intel;
2720                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2721         }
2722
2723         if (id->driver_info & BTUSB_MARVELL)
2724                 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
2725
2726         if (id->driver_info & BTUSB_SWAVE) {
2727                 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
2728                 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
2729         }
2730
2731         if (id->driver_info & BTUSB_INTEL_BOOT)
2732                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
2733
2734         if (id->driver_info & BTUSB_ATH3012) {
2735                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
2736                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2737         }
2738
2739         if (id->driver_info & BTUSB_AMP) {
2740                 /* AMP controllers do not support SCO packets */
2741                 data->isoc = NULL;
2742         } else {
2743                 /* Interface numbers are hardcoded in the specification */
2744                 data->isoc = usb_ifnum_to_if(data->udev, 1);
2745         }
2746
2747         if (!reset)
2748                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2749
2750         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
2751                 if (!disable_scofix)
2752                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
2753         }
2754
2755         if (id->driver_info & BTUSB_BROKEN_ISOC)
2756                 data->isoc = NULL;
2757
2758         if (id->driver_info & BTUSB_DIGIANSWER) {
2759                 data->cmdreq_type = USB_TYPE_VENDOR;
2760                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2761         }
2762
2763         if (id->driver_info & BTUSB_CSR) {
2764                 struct usb_device *udev = data->udev;
2765                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
2766
2767                 /* Old firmware would otherwise execute USB reset */
2768                 if (bcdDevice < 0x117)
2769                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2770
2771                 /* Fake CSR devices with broken commands */
2772                 if (bcdDevice <= 0x100)
2773                         hdev->setup = btusb_setup_csr;
2774         }
2775
2776         if (id->driver_info & BTUSB_SNIFFER) {
2777                 struct usb_device *udev = data->udev;
2778
2779                 /* New sniffer firmware has crippled HCI interface */
2780                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
2781                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
2782         }
2783
2784         if (id->driver_info & BTUSB_INTEL_BOOT) {
2785                 /* A bug in the bootloader causes that interrupt interface is
2786                  * only enabled after receiving SetInterface(0, AltSetting=0).
2787                  */
2788                 err = usb_set_interface(data->udev, 0, 0);
2789                 if (err < 0) {
2790                         BT_ERR("failed to set interface 0, alt 0 %d", err);
2791                         hci_free_dev(hdev);
2792                         return err;
2793                 }
2794         }
2795
2796         if (data->isoc) {
2797                 err = usb_driver_claim_interface(&btusb_driver,
2798                                                  data->isoc, data);
2799                 if (err < 0) {
2800                         hci_free_dev(hdev);
2801                         return err;
2802                 }
2803         }
2804
2805         err = hci_register_dev(hdev);
2806         if (err < 0) {
2807                 hci_free_dev(hdev);
2808                 return err;
2809         }
2810
2811         usb_set_intfdata(intf, data);
2812
2813         return 0;
2814 }
2815
2816 static void btusb_disconnect(struct usb_interface *intf)
2817 {
2818         struct btusb_data *data = usb_get_intfdata(intf);
2819         struct hci_dev *hdev;
2820
2821         BT_DBG("intf %p", intf);
2822
2823         if (!data)
2824                 return;
2825
2826         hdev = data->hdev;
2827         usb_set_intfdata(data->intf, NULL);
2828
2829         if (data->isoc)
2830                 usb_set_intfdata(data->isoc, NULL);
2831
2832         hci_unregister_dev(hdev);
2833
2834         if (intf == data->isoc)
2835                 usb_driver_release_interface(&btusb_driver, data->intf);
2836         else if (data->isoc)
2837                 usb_driver_release_interface(&btusb_driver, data->isoc);
2838
2839         hci_free_dev(hdev);
2840 }
2841
2842 #ifdef CONFIG_PM
2843 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
2844 {
2845         struct btusb_data *data = usb_get_intfdata(intf);
2846
2847         BT_DBG("intf %p", intf);
2848
2849         if (data->suspend_count++)
2850                 return 0;
2851
2852         spin_lock_irq(&data->txlock);
2853         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
2854                 set_bit(BTUSB_SUSPENDING, &data->flags);
2855                 spin_unlock_irq(&data->txlock);
2856         } else {
2857                 spin_unlock_irq(&data->txlock);
2858                 data->suspend_count--;
2859                 return -EBUSY;
2860         }
2861
2862         cancel_work_sync(&data->work);
2863
2864         btusb_stop_traffic(data);
2865         usb_kill_anchored_urbs(&data->tx_anchor);
2866
2867         return 0;
2868 }
2869
2870 static void play_deferred(struct btusb_data *data)
2871 {
2872         struct urb *urb;
2873         int err;
2874
2875         while ((urb = usb_get_from_anchor(&data->deferred))) {
2876                 err = usb_submit_urb(urb, GFP_ATOMIC);
2877                 if (err < 0)
2878                         break;
2879
2880                 data->tx_in_flight++;
2881         }
2882         usb_scuttle_anchored_urbs(&data->deferred);
2883 }
2884
2885 static int btusb_resume(struct usb_interface *intf)
2886 {
2887         struct btusb_data *data = usb_get_intfdata(intf);
2888         struct hci_dev *hdev = data->hdev;
2889         int err = 0;
2890
2891         BT_DBG("intf %p", intf);
2892
2893         if (--data->suspend_count)
2894                 return 0;
2895
2896         if (!test_bit(HCI_RUNNING, &hdev->flags))
2897                 goto done;
2898
2899         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
2900                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
2901                 if (err < 0) {
2902                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
2903                         goto failed;
2904                 }
2905         }
2906
2907         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
2908                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
2909                 if (err < 0) {
2910                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
2911                         goto failed;
2912                 }
2913
2914                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
2915         }
2916
2917         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
2918                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
2919                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
2920                 else
2921                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
2922         }
2923
2924         spin_lock_irq(&data->txlock);
2925         play_deferred(data);
2926         clear_bit(BTUSB_SUSPENDING, &data->flags);
2927         spin_unlock_irq(&data->txlock);
2928         schedule_work(&data->work);
2929
2930         return 0;
2931
2932 failed:
2933         usb_scuttle_anchored_urbs(&data->deferred);
2934 done:
2935         spin_lock_irq(&data->txlock);
2936         clear_bit(BTUSB_SUSPENDING, &data->flags);
2937         spin_unlock_irq(&data->txlock);
2938
2939         return err;
2940 }
2941 #endif
2942
2943 static struct usb_driver btusb_driver = {
2944         .name           = "btusb",
2945         .probe          = btusb_probe,
2946         .disconnect     = btusb_disconnect,
2947 #ifdef CONFIG_PM
2948         .suspend        = btusb_suspend,
2949         .resume         = btusb_resume,
2950 #endif
2951         .id_table       = btusb_table,
2952         .supports_autosuspend = 1,
2953         .disable_hub_initiated_lpm = 1,
2954 };
2955
2956 module_usb_driver(btusb_driver);
2957
2958 module_param(disable_scofix, bool, 0644);
2959 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
2960
2961 module_param(force_scofix, bool, 0644);
2962 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
2963
2964 module_param(reset, bool, 0644);
2965 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
2966
2967 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
2968 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
2969 MODULE_VERSION(VERSION);
2970 MODULE_LICENSE("GPL");