kernel/drivers/bluetooth/btusb.c

   1 /*
   2  *
   3  *  Generic Bluetooth USB driver
   4  *
   5  *  Copyright (C) 2005-2008  Marcel Holtmann <marcel@holtmann.org>
   6  *
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, write to the Free Software
  20  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  *
  22  */
  23
  24 #include <linux/module.h>
  25 #include <linux/usb.h>
  26 #include <linux/firmware.h>
  27 #include <asm/unaligned.h>
  28
  29 #include <net/bluetooth/bluetooth.h>
  30 #include <net/bluetooth/hci_core.h>
  31
  32 #include "btintel.h"
  33 #include "btbcm.h"
  34
  35 #define VERSION "0.8"
  36
  37 static bool disable_scofix;
  38 static bool force_scofix;
  39
  40 static bool reset = 1;
  41
  42 static struct usb_driver btusb_driver;
  43
  44 #define BTUSB_IGNORE            0x01
  45 #define BTUSB_DIGIANSWER        0x02
  46 #define BTUSB_CSR               0x04
  47 #define BTUSB_SNIFFER           0x08
  48 #define BTUSB_BCM92035          0x10
  49 #define BTUSB_BROKEN_ISOC       0x20
  50 #define BTUSB_WRONG_SCO_MTU     0x40
  51 #define BTUSB_ATH3012           0x80
  52 #define BTUSB_INTEL             0x100
  53 #define BTUSB_INTEL_BOOT        0x200
  54 #define BTUSB_BCM_PATCHRAM      0x400
  55 #define BTUSB_MARVELL           0x800
  56 #define BTUSB_SWAVE             0x1000
  57 #define BTUSB_INTEL_NEW         0x2000
  58 #define BTUSB_AMP               0x4000
  59 #define BTUSB_QCA_ROME          0x8000
  60 #define BTUSB_BCM_APPLE         0x10000
  61 #define BTUSB_REALTEK           0x20000
  62
  63 static const struct usb_device_id btusb_table[] = {
  64         /* Generic Bluetooth USB device */
  65         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  66
  67         /* Generic Bluetooth AMP device */
  68         { USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP },
  69
  70         /* Apple-specific (Broadcom) devices */
  71         { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01),
  72           .driver_info = BTUSB_BCM_APPLE },
  73
  74         /* MediaTek MT76x0E */
  75         { USB_DEVICE(0x0e8d, 0x763f) },
  76
  77         /* Broadcom SoftSailing reporting vendor specific */
  78         { USB_DEVICE(0x0a5c, 0x21e1) },
  79
  80         /* Apple MacBookPro 7,1 */
  81         { USB_DEVICE(0x05ac, 0x8213) },
  82
  83         /* Apple iMac11,1 */
  84         { USB_DEVICE(0x05ac, 0x8215) },
  85
  86         /* Apple MacBookPro6,2 */
  87         { USB_DEVICE(0x05ac, 0x8218) },
  88
  89         /* Apple MacBookAir3,1, MacBookAir3,2 */
  90         { USB_DEVICE(0x05ac, 0x821b) },
  91
  92         /* Apple MacBookAir4,1 */
  93         { USB_DEVICE(0x05ac, 0x821f) },
  94
  95         /* Apple MacBookPro8,2 */
  96         { USB_DEVICE(0x05ac, 0x821a) },
  97
  98         /* Apple MacMini5,1 */
  99         { USB_DEVICE(0x05ac, 0x8281) },
 100
 101         /* AVM BlueFRITZ! USB v2.0 */
 102         { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE },
 103
 104         /* Bluetooth Ultraport Module from IBM */
 105         { USB_DEVICE(0x04bf, 0x030a) },
 106
 107         /* ALPS Modules with non-standard id */
 108         { USB_DEVICE(0x044e, 0x3001) },
 109         { USB_DEVICE(0x044e, 0x3002) },
 110
 111         /* Ericsson with non-standard id */
 112         { USB_DEVICE(0x0bdb, 0x1002) },
 113
 114         /* Canyon CN-BTU1 with HID interfaces */
 115         { USB_DEVICE(0x0c10, 0x0000) },
 116
 117         /* Broadcom BCM20702A0 */
 118         { USB_DEVICE(0x413c, 0x8197) },
 119
 120         /* Broadcom BCM20702B0 (Dynex/Insignia) */
 121         { USB_DEVICE(0x19ff, 0x0239), .driver_info = BTUSB_BCM_PATCHRAM },
 122
 123         /* Foxconn - Hon Hai */
 124         { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01),
 125           .driver_info = BTUSB_BCM_PATCHRAM },
 126
 127         /* Lite-On Technology - Broadcom based */
 128         { USB_VENDOR_AND_INTERFACE_INFO(0x04ca, 0xff, 0x01, 0x01),
 129           .driver_info = BTUSB_BCM_PATCHRAM },
 130
 131         /* Broadcom devices with vendor specific id */
 132         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
 133           .driver_info = BTUSB_BCM_PATCHRAM },
 134
 135         /* ASUSTek Computer - Broadcom based */
 136         { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01),
 137           .driver_info = BTUSB_BCM_PATCHRAM },
 138
 139         /* Belkin F8065bf - Broadcom based */
 140         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01),
 141           .driver_info = BTUSB_BCM_PATCHRAM },
 142
 143         /* IMC Networks - Broadcom based */
 144         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01),
 145           .driver_info = BTUSB_BCM_PATCHRAM },
 146
 147         /* Intel Bluetooth USB Bootloader (RAM module) */
 148         { USB_DEVICE(0x8087, 0x0a5a),
 149           .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
 150
 151         { }     /* Terminating entry */
 152 };
 153
 154 MODULE_DEVICE_TABLE(usb, btusb_table);
 155
 156 static const struct usb_device_id blacklist_table[] = {
 157         /* CSR BlueCore devices */
 158         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 159
 160         /* Broadcom BCM2033 without firmware */
 161         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 162
 163         /* Atheros 3011 with sflash firmware */
 164         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 165         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 166         { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE },
 167         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 168         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 169         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 170         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 171
 172         /* Atheros AR9285 Malbec with sflash firmware */
 173         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 174
 175         /* Atheros 3012 with sflash firmware */
 176         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 177         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 178         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 179         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 180         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 181         { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
 182         { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
 183         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 184         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 185         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 186         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 187         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 188         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 189         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 190         { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
 191         { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
 192         { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
 193         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 194         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 195         { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
 196         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 197         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 198         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 199         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 200         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 201         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
 202         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 203         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 204         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 205         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 206         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 207         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 208         { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 },
 209         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 210         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 211         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 212         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 213         { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
 214         { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
 215         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
 216         { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
 217
 218         /* Atheros AR5BBU12 with sflash firmware */
 219         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 220
 221         /* Atheros AR5BBU12 with sflash firmware */
 222         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 223         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 224
 225         /* QCA ROME chipset */
 226         { USB_DEVICE(0x0cf3, 0xe007), .driver_info = BTUSB_QCA_ROME },
 227         { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME },
 228         { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME },
 229
 230         /* Broadcom BCM2035 */
 231         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 232         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 233         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 234
 235         /* Broadcom BCM2045 */
 236         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 237         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 238
 239         /* IBM/Lenovo ThinkPad with Broadcom chip */
 240         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 241         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 242
 243         /* HP laptop with Broadcom chip */
 244         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 245
 246         /* Dell laptop with Broadcom chip */
 247         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 248
 249         /* Dell Wireless 370 and 410 devices */
 250         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 251         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 252
 253         /* Belkin F8T012 and F8T013 devices */
 254         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 255         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 256
 257         /* Asus WL-BTD202 device */
 258         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 259
 260         /* Kensington Bluetooth USB adapter */
 261         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 262
 263         /* RTX Telecom based adapters with buggy SCO support */
 264         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 265         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 266
 267         /* CONWISE Technology based adapters with buggy SCO support */
 268         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 269
 270         /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
 271         { USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE },
 272
 273         /* Digianswer devices */
 274         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 275         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 276
 277         /* CSR BlueCore Bluetooth Sniffer */
 278         { USB_DEVICE(0x0a12, 0x0002),
 279           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 280
 281         /* Frontline ComProbe Bluetooth Sniffer */
 282         { USB_DEVICE(0x16d3, 0x0002),
 283           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 284
 285         /* Marvell Bluetooth devices */
 286         { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
 287         { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
 288
 289         /* Intel Bluetooth devices */
 290         { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR },
 291         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 292         { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
 293         { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_NEW },
 294
 295         /* Other Intel Bluetooth devices */
 296         { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01),
 297           .driver_info = BTUSB_IGNORE },
 298
 299         /* Realtek Bluetooth devices */
 300         { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01),
 301           .driver_info = BTUSB_REALTEK },
 302
 303         /* Additional Realtek 8723AE Bluetooth devices */
 304         { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK },
 305         { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK },
 306
 307         /* Additional Realtek 8723BE Bluetooth devices */
 308         { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK },
 309         { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK },
 310         { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
 311         { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
 312         { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },
 313
 314         /* Additional Realtek 8821AE Bluetooth devices */
 315         { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
 316         { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },
 317         { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK },
 318         { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK },
 319         { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK },
 320
 321         { }     /* Terminating entry */
 322 };
 323
 324 #define BTUSB_MAX_ISOC_FRAMES   10
 325
 326 #define BTUSB_INTR_RUNNING      0
 327 #define BTUSB_BULK_RUNNING      1
 328 #define BTUSB_ISOC_RUNNING      2
 329 #define BTUSB_SUSPENDING        3
 330 #define BTUSB_DID_ISO_RESUME    4
 331 #define BTUSB_BOOTLOADER        5
 332 #define BTUSB_DOWNLOADING       6
 333 #define BTUSB_FIRMWARE_LOADED   7
 334 #define BTUSB_FIRMWARE_FAILED   8
 335 #define BTUSB_BOOTING           9
 336
 337 struct btusb_data {
 338         struct hci_dev       *hdev;
 339         struct usb_device    *udev;
 340         struct usb_interface *intf;
 341         struct usb_interface *isoc;
 342
 343         unsigned long flags;
 344
 345         struct work_struct work;
 346         struct work_struct waker;
 347
 348         struct usb_anchor deferred;
 349         struct usb_anchor tx_anchor;
 350         int tx_in_flight;
 351         spinlock_t txlock;
 352
 353         struct usb_anchor intr_anchor;
 354         struct usb_anchor bulk_anchor;
 355         struct usb_anchor isoc_anchor;
 356         spinlock_t rxlock;
 357
 358         struct sk_buff *evt_skb;
 359         struct sk_buff *acl_skb;
 360         struct sk_buff *sco_skb;
 361
 362         struct usb_endpoint_descriptor *intr_ep;
 363         struct usb_endpoint_descriptor *bulk_tx_ep;
 364         struct usb_endpoint_descriptor *bulk_rx_ep;
 365         struct usb_endpoint_descriptor *isoc_tx_ep;
 366         struct usb_endpoint_descriptor *isoc_rx_ep;
 367
 368         __u8 cmdreq_type;
 369         __u8 cmdreq;
 370
 371         unsigned int sco_num;
 372         int isoc_altsetting;
 373         int suspend_count;
 374
 375         int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
 376         int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
 377
 378         int (*setup_on_usb)(struct hci_dev *hdev);
 379 };
 380
 381 static inline void btusb_free_frags(struct btusb_data *data)
 382 {
 383         unsigned long flags;
 384
 385         spin_lock_irqsave(&data->rxlock, flags);
 386
 387         kfree_skb(data->evt_skb);
 388         data->evt_skb = NULL;
 389
 390         kfree_skb(data->acl_skb);
 391         data->acl_skb = NULL;
 392
 393         kfree_skb(data->sco_skb);
 394         data->sco_skb = NULL;
 395
 396         spin_unlock_irqrestore(&data->rxlock, flags);
 397 }
 398
 399 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
 400 {
 401         struct sk_buff *skb;
 402         int err = 0;
 403
 404         spin_lock(&data->rxlock);
 405         skb = data->evt_skb;
 406
 407         while (count) {
 408                 int len;
 409
 410                 if (!skb) {
 411                         skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
 412                         if (!skb) {
 413                                 err = -ENOMEM;
 414                                 break;
 415                         }
 416
 417                         bt_cb(skb)->pkt_type = HCI_EVENT_PKT;
 418                         bt_cb(skb)->expect = HCI_EVENT_HDR_SIZE;
 419                 }
 420
 421                 len = min_t(uint, bt_cb(skb)->expect, count);
 422                 memcpy(skb_put(skb, len), buffer, len);
 423
 424                 count -= len;
 425                 buffer += len;
 426                 bt_cb(skb)->expect -= len;
 427
 428                 if (skb->len == HCI_EVENT_HDR_SIZE) {
 429                         /* Complete event header */
 430                         bt_cb(skb)->expect = hci_event_hdr(skb)->plen;
 431
 432                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 433                                 kfree_skb(skb);
 434                                 skb = NULL;
 435
 436                                 err = -EILSEQ;
 437                                 break;
 438                         }
 439                 }
 440
 441                 if (bt_cb(skb)->expect == 0) {
 442                         /* Complete frame */
 443                         data->recv_event(data->hdev, skb);
 444                         skb = NULL;
 445                 }
 446         }
 447
 448         data->evt_skb = skb;
 449         spin_unlock(&data->rxlock);
 450
 451         return err;
 452 }
 453
 454 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
 455 {
 456         struct sk_buff *skb;
 457         int err = 0;
 458
 459         spin_lock(&data->rxlock);
 460         skb = data->acl_skb;
 461
 462         while (count) {
 463                 int len;
 464
 465                 if (!skb) {
 466                         skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
 467                         if (!skb) {
 468                                 err = -ENOMEM;
 469                                 break;
 470                         }
 471
 472                         bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT;
 473                         bt_cb(skb)->expect = HCI_ACL_HDR_SIZE;
 474                 }
 475
 476                 len = min_t(uint, bt_cb(skb)->expect, count);
 477                 memcpy(skb_put(skb, len), buffer, len);
 478
 479                 count -= len;
 480                 buffer += len;
 481                 bt_cb(skb)->expect -= len;
 482
 483                 if (skb->len == HCI_ACL_HDR_SIZE) {
 484                         __le16 dlen = hci_acl_hdr(skb)->dlen;
 485
 486                         /* Complete ACL header */
 487                         bt_cb(skb)->expect = __le16_to_cpu(dlen);
 488
 489                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 490                                 kfree_skb(skb);
 491                                 skb = NULL;
 492
 493                                 err = -EILSEQ;
 494                                 break;
 495                         }
 496                 }
 497
 498                 if (bt_cb(skb)->expect == 0) {
 499                         /* Complete frame */
 500                         hci_recv_frame(data->hdev, skb);
 501                         skb = NULL;
 502                 }
 503         }
 504
 505         data->acl_skb = skb;
 506         spin_unlock(&data->rxlock);
 507
 508         return err;
 509 }
 510
 511 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
 512 {
 513         struct sk_buff *skb;
 514         int err = 0;
 515
 516         spin_lock(&data->rxlock);
 517         skb = data->sco_skb;
 518
 519         while (count) {
 520                 int len;
 521
 522                 if (!skb) {
 523                         skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
 524                         if (!skb) {
 525                                 err = -ENOMEM;
 526                                 break;
 527                         }
 528
 529                         bt_cb(skb)->pkt_type = HCI_SCODATA_PKT;
 530                         bt_cb(skb)->expect = HCI_SCO_HDR_SIZE;
 531                 }
 532
 533                 len = min_t(uint, bt_cb(skb)->expect, count);
 534                 memcpy(skb_put(skb, len), buffer, len);
 535
 536                 count -= len;
 537                 buffer += len;
 538                 bt_cb(skb)->expect -= len;
 539
 540                 if (skb->len == HCI_SCO_HDR_SIZE) {
 541                         /* Complete SCO header */
 542                         bt_cb(skb)->expect = hci_sco_hdr(skb)->dlen;
 543
 544                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 545                                 kfree_skb(skb);
 546                                 skb = NULL;
 547
 548                                 err = -EILSEQ;
 549                                 break;
 550                         }
 551                 }
 552
 553                 if (bt_cb(skb)->expect == 0) {
 554                         /* Complete frame */
 555                         hci_recv_frame(data->hdev, skb);
 556                         skb = NULL;
 557                 }
 558         }
 559
 560         data->sco_skb = skb;
 561         spin_unlock(&data->rxlock);
 562
 563         return err;
 564 }
 565
 566 static void btusb_intr_complete(struct urb *urb)
 567 {
 568         struct hci_dev *hdev = urb->context;
 569         struct btusb_data *data = hci_get_drvdata(hdev);
 570         int err;
 571
 572         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 573                urb->actual_length);
 574
 575         if (!test_bit(HCI_RUNNING, &hdev->flags))
 576                 return;
 577
 578         if (urb->status == 0) {
 579                 hdev->stat.byte_rx += urb->actual_length;
 580
 581                 if (btusb_recv_intr(data, urb->transfer_buffer,
 582                                     urb->actual_length) < 0) {
 583                         BT_ERR("%s corrupted event packet", hdev->name);
 584                         hdev->stat.err_rx++;
 585                 }
 586         } else if (urb->status == -ENOENT) {
 587                 /* Avoid suspend failed when usb_kill_urb */
 588                 return;
 589         }
 590
 591         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 592                 return;
 593
 594         usb_mark_last_busy(data->udev);
 595         usb_anchor_urb(urb, &data->intr_anchor);
 596
 597         err = usb_submit_urb(urb, GFP_ATOMIC);
 598         if (err < 0) {
 599                 /* -EPERM: urb is being killed;
 600                  * -ENODEV: device got disconnected */
 601                 if (err != -EPERM && err != -ENODEV)
 602                         BT_ERR("%s urb %p failed to resubmit (%d)",
 603                                hdev->name, urb, -err);
 604                 usb_unanchor_urb(urb);
 605         }
 606 }
 607
 608 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 609 {
 610         struct btusb_data *data = hci_get_drvdata(hdev);
 611         struct urb *urb;
 612         unsigned char *buf;
 613         unsigned int pipe;
 614         int err, size;
 615
 616         BT_DBG("%s", hdev->name);
 617
 618         if (!data->intr_ep)
 619                 return -ENODEV;
 620
 621         urb = usb_alloc_urb(0, mem_flags);
 622         if (!urb)
 623                 return -ENOMEM;
 624
 625         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 626
 627         buf = kmalloc(size, mem_flags);
 628         if (!buf) {
 629                 usb_free_urb(urb);
 630                 return -ENOMEM;
 631         }
 632
 633         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 634
 635         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 636                          btusb_intr_complete, hdev, data->intr_ep->bInterval);
 637
 638         urb->transfer_flags |= URB_FREE_BUFFER;
 639
 640         usb_anchor_urb(urb, &data->intr_anchor);
 641
 642         err = usb_submit_urb(urb, mem_flags);
 643         if (err < 0) {
 644                 if (err != -EPERM && err != -ENODEV)
 645                         BT_ERR("%s urb %p submission failed (%d)",
 646                                hdev->name, urb, -err);
 647                 usb_unanchor_urb(urb);
 648         }
 649
 650         usb_free_urb(urb);
 651
 652         return err;
 653 }
 654
 655 static void btusb_bulk_complete(struct urb *urb)
 656 {
 657         struct hci_dev *hdev = urb->context;
 658         struct btusb_data *data = hci_get_drvdata(hdev);
 659         int err;
 660
 661         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 662                urb->actual_length);
 663
 664         if (!test_bit(HCI_RUNNING, &hdev->flags))
 665                 return;
 666
 667         if (urb->status == 0) {
 668                 hdev->stat.byte_rx += urb->actual_length;
 669
 670                 if (data->recv_bulk(data, urb->transfer_buffer,
 671                                     urb->actual_length) < 0) {
 672                         BT_ERR("%s corrupted ACL packet", hdev->name);
 673                         hdev->stat.err_rx++;
 674                 }
 675         } else if (urb->status == -ENOENT) {
 676                 /* Avoid suspend failed when usb_kill_urb */
 677                 return;
 678         }
 679
 680         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 681                 return;
 682
 683         usb_anchor_urb(urb, &data->bulk_anchor);
 684         usb_mark_last_busy(data->udev);
 685
 686         err = usb_submit_urb(urb, GFP_ATOMIC);
 687         if (err < 0) {
 688                 /* -EPERM: urb is being killed;
 689                  * -ENODEV: device got disconnected */
 690                 if (err != -EPERM && err != -ENODEV)
 691                         BT_ERR("%s urb %p failed to resubmit (%d)",
 692                                hdev->name, urb, -err);
 693                 usb_unanchor_urb(urb);
 694         }
 695 }
 696
 697 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 698 {
 699         struct btusb_data *data = hci_get_drvdata(hdev);
 700         struct urb *urb;
 701         unsigned char *buf;
 702         unsigned int pipe;
 703         int err, size = HCI_MAX_FRAME_SIZE;
 704
 705         BT_DBG("%s", hdev->name);
 706
 707         if (!data->bulk_rx_ep)
 708                 return -ENODEV;
 709
 710         urb = usb_alloc_urb(0, mem_flags);
 711         if (!urb)
 712                 return -ENOMEM;
 713
 714         buf = kmalloc(size, mem_flags);
 715         if (!buf) {
 716                 usb_free_urb(urb);
 717                 return -ENOMEM;
 718         }
 719
 720         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 721
 722         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
 723                           btusb_bulk_complete, hdev);
 724
 725         urb->transfer_flags |= URB_FREE_BUFFER;
 726
 727         usb_mark_last_busy(data->udev);
 728         usb_anchor_urb(urb, &data->bulk_anchor);
 729
 730         err = usb_submit_urb(urb, mem_flags);
 731         if (err < 0) {
 732                 if (err != -EPERM && err != -ENODEV)
 733                         BT_ERR("%s urb %p submission failed (%d)",
 734                                hdev->name, urb, -err);
 735                 usb_unanchor_urb(urb);
 736         }
 737
 738         usb_free_urb(urb);
 739
 740         return err;
 741 }
 742
 743 static void btusb_isoc_complete(struct urb *urb)
 744 {
 745         struct hci_dev *hdev = urb->context;
 746         struct btusb_data *data = hci_get_drvdata(hdev);
 747         int i, err;
 748
 749         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 750                urb->actual_length);
 751
 752         if (!test_bit(HCI_RUNNING, &hdev->flags))
 753                 return;
 754
 755         if (urb->status == 0) {
 756                 for (i = 0; i < urb->number_of_packets; i++) {
 757                         unsigned int offset = urb->iso_frame_desc[i].offset;
 758                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 759
 760                         if (urb->iso_frame_desc[i].status)
 761                                 continue;
 762
 763                         hdev->stat.byte_rx += length;
 764
 765                         if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
 766                                             length) < 0) {
 767                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 768                                 hdev->stat.err_rx++;
 769                         }
 770                 }
 771         } else if (urb->status == -ENOENT) {
 772                 /* Avoid suspend failed when usb_kill_urb */
 773                 return;
 774         }
 775
 776         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 777                 return;
 778
 779         usb_anchor_urb(urb, &data->isoc_anchor);
 780
 781         err = usb_submit_urb(urb, GFP_ATOMIC);
 782         if (err < 0) {
 783                 /* -EPERM: urb is being killed;
 784                  * -ENODEV: device got disconnected */
 785                 if (err != -EPERM && err != -ENODEV)
 786                         BT_ERR("%s urb %p failed to resubmit (%d)",
 787                                hdev->name, urb, -err);
 788                 usb_unanchor_urb(urb);
 789         }
 790 }
 791
 792 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 793 {
 794         int i, offset = 0;
 795
 796         BT_DBG("len %d mtu %d", len, mtu);
 797
 798         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 799                                         i++, offset += mtu, len -= mtu) {
 800                 urb->iso_frame_desc[i].offset = offset;
 801                 urb->iso_frame_desc[i].length = mtu;
 802         }
 803
 804         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 805                 urb->iso_frame_desc[i].offset = offset;
 806                 urb->iso_frame_desc[i].length = len;
 807                 i++;
 808         }
 809
 810         urb->number_of_packets = i;
 811 }
 812
 813 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 814 {
 815         struct btusb_data *data = hci_get_drvdata(hdev);
 816         struct urb *urb;
 817         unsigned char *buf;
 818         unsigned int pipe;
 819         int err, size;
 820
 821         BT_DBG("%s", hdev->name);
 822
 823         if (!data->isoc_rx_ep)
 824                 return -ENODEV;
 825
 826         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 827         if (!urb)
 828                 return -ENOMEM;
 829
 830         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 831                                                 BTUSB_MAX_ISOC_FRAMES;
 832
 833         buf = kmalloc(size, mem_flags);
 834         if (!buf) {
 835                 usb_free_urb(urb);
 836                 return -ENOMEM;
 837         }
 838
 839         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 840
 841         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 842                          hdev, data->isoc_rx_ep->bInterval);
 843
 844         urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
 845
 846         __fill_isoc_descriptor(urb, size,
 847                                le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 848
 849         usb_anchor_urb(urb, &data->isoc_anchor);
 850
 851         err = usb_submit_urb(urb, mem_flags);
 852         if (err < 0) {
 853                 if (err != -EPERM && err != -ENODEV)
 854                         BT_ERR("%s urb %p submission failed (%d)",
 855                                hdev->name, urb, -err);
 856                 usb_unanchor_urb(urb);
 857         }
 858
 859         usb_free_urb(urb);
 860
 861         return err;
 862 }
 863
 864 static void btusb_tx_complete(struct urb *urb)
 865 {
 866         struct sk_buff *skb = urb->context;
 867         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
 868         struct btusb_data *data = hci_get_drvdata(hdev);
 869
 870         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 871                urb->actual_length);
 872
 873         if (!test_bit(HCI_RUNNING, &hdev->flags))
 874                 goto done;
 875
 876         if (!urb->status)
 877                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 878         else
 879                 hdev->stat.err_tx++;
 880
 881 done:
 882         spin_lock(&data->txlock);
 883         data->tx_in_flight--;
 884         spin_unlock(&data->txlock);
 885
 886         kfree(urb->setup_packet);
 887
 888         kfree_skb(skb);
 889 }
 890
 891 static void btusb_isoc_tx_complete(struct urb *urb)
 892 {
 893         struct sk_buff *skb = urb->context;
 894         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
 895
 896         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 897                urb->actual_length);
 898
 899         if (!test_bit(HCI_RUNNING, &hdev->flags))
 900                 goto done;
 901
 902         if (!urb->status)
 903                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 904         else
 905                 hdev->stat.err_tx++;
 906
 907 done:
 908         kfree(urb->setup_packet);
 909
 910         kfree_skb(skb);
 911 }
 912
 913 static int btusb_open(struct hci_dev *hdev)
 914 {
 915         struct btusb_data *data = hci_get_drvdata(hdev);
 916         int err;
 917
 918         BT_DBG("%s", hdev->name);
 919
 920         /* Patching USB firmware files prior to starting any URBs of HCI path
 921          * It is more safe to use USB bulk channel for downloading USB patch
 922          */
 923         if (data->setup_on_usb) {
 924                 err = data->setup_on_usb(hdev);
 925                 if (err < 0)
 926                         return err;
 927         }
 928
 929         err = usb_autopm_get_interface(data->intf);
 930         if (err < 0)
 931                 return err;
 932
 933         data->intf->needs_remote_wakeup = 1;
 934
 935         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 936                 goto done;
 937
 938         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 939                 goto done;
 940
 941         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 942         if (err < 0)
 943                 goto failed;
 944
 945         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 946         if (err < 0) {
 947                 usb_kill_anchored_urbs(&data->intr_anchor);
 948                 goto failed;
 949         }
 950
 951         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 952         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 953
 954 done:
 955         usb_autopm_put_interface(data->intf);
 956         return 0;
 957
 958 failed:
 959         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 960         clear_bit(HCI_RUNNING, &hdev->flags);
 961         usb_autopm_put_interface(data->intf);
 962         return err;
 963 }
 964
 965 static void btusb_stop_traffic(struct btusb_data *data)
 966 {
 967         usb_kill_anchored_urbs(&data->intr_anchor);
 968         usb_kill_anchored_urbs(&data->bulk_anchor);
 969         usb_kill_anchored_urbs(&data->isoc_anchor);
 970 }
 971
 972 static int btusb_close(struct hci_dev *hdev)
 973 {
 974         struct btusb_data *data = hci_get_drvdata(hdev);
 975         int err;
 976
 977         BT_DBG("%s", hdev->name);
 978
 979         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 980                 return 0;
 981
 982         cancel_work_sync(&data->work);
 983         cancel_work_sync(&data->waker);
 984
 985         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 986         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 987         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 988
 989         btusb_stop_traffic(data);
 990         btusb_free_frags(data);
 991
 992         err = usb_autopm_get_interface(data->intf);
 993         if (err < 0)
 994                 goto failed;
 995
 996         data->intf->needs_remote_wakeup = 0;
 997         usb_autopm_put_interface(data->intf);
 998
 999 failed:
1000         usb_scuttle_anchored_urbs(&data->deferred);
1001         return 0;
1002 }
1003
1004 static int btusb_flush(struct hci_dev *hdev)
1005 {
1006         struct btusb_data *data = hci_get_drvdata(hdev);
1007
1008         BT_DBG("%s", hdev->name);
1009
1010         usb_kill_anchored_urbs(&data->tx_anchor);
1011         btusb_free_frags(data);
1012
1013         return 0;
1014 }
1015
1016 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
1017 {
1018         struct btusb_data *data = hci_get_drvdata(hdev);
1019         struct usb_ctrlrequest *dr;
1020         struct urb *urb;
1021         unsigned int pipe;
1022
1023         urb = usb_alloc_urb(0, GFP_KERNEL);
1024         if (!urb)
1025                 return ERR_PTR(-ENOMEM);
1026
1027         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
1028         if (!dr) {
1029                 usb_free_urb(urb);
1030                 return ERR_PTR(-ENOMEM);
1031         }
1032
1033         dr->bRequestType = data->cmdreq_type;
1034         dr->bRequest     = data->cmdreq;
1035         dr->wIndex       = 0;
1036         dr->wValue       = 0;
1037         dr->wLength      = __cpu_to_le16(skb->len);
1038
1039         pipe = usb_sndctrlpipe(data->udev, 0x00);
1040
1041         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
1042                              skb->data, skb->len, btusb_tx_complete, skb);
1043
1044         skb->dev = (void *)hdev;
1045
1046         return urb;
1047 }
1048
1049 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
1050 {
1051         struct btusb_data *data = hci_get_drvdata(hdev);
1052         struct urb *urb;
1053         unsigned int pipe;
1054
1055         if (!data->bulk_tx_ep)
1056                 return ERR_PTR(-ENODEV);
1057
1058         urb = usb_alloc_urb(0, GFP_KERNEL);
1059         if (!urb)
1060                 return ERR_PTR(-ENOMEM);
1061
1062         pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1063
1064         usb_fill_bulk_urb(urb, data->udev, pipe,
1065                           skb->data, skb->len, btusb_tx_complete, skb);
1066
1067         skb->dev = (void *)hdev;
1068
1069         return urb;
1070 }
1071
1072 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1073 {
1074         struct btusb_data *data = hci_get_drvdata(hdev);
1075         struct urb *urb;
1076         unsigned int pipe;
1077
1078         if (!data->isoc_tx_ep)
1079                 return ERR_PTR(-ENODEV);
1080
1081         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1082         if (!urb)
1083                 return ERR_PTR(-ENOMEM);
1084
1085         pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1086
1087         usb_fill_int_urb(urb, data->udev, pipe,
1088                          skb->data, skb->len, btusb_isoc_tx_complete,
1089                          skb, data->isoc_tx_ep->bInterval);
1090
1091         urb->transfer_flags  = URB_ISO_ASAP;
1092
1093         __fill_isoc_descriptor(urb, skb->len,
1094                                le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1095
1096         skb->dev = (void *)hdev;
1097
1098         return urb;
1099 }
1100
1101 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1102 {
1103         struct btusb_data *data = hci_get_drvdata(hdev);
1104         int err;
1105
1106         usb_anchor_urb(urb, &data->tx_anchor);
1107
1108         err = usb_submit_urb(urb, GFP_KERNEL);
1109         if (err < 0) {
1110                 if (err != -EPERM && err != -ENODEV)
1111                         BT_ERR("%s urb %p submission failed (%d)",
1112                                hdev->name, urb, -err);
1113                 kfree(urb->setup_packet);
1114                 usb_unanchor_urb(urb);
1115         } else {
1116                 usb_mark_last_busy(data->udev);
1117         }
1118
1119         usb_free_urb(urb);
1120         return err;
1121 }
1122
1123 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1124 {
1125         struct btusb_data *data = hci_get_drvdata(hdev);
1126         unsigned long flags;
1127         bool suspending;
1128
1129         spin_lock_irqsave(&data->txlock, flags);
1130         suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1131         if (!suspending)
1132                 data->tx_in_flight++;
1133         spin_unlock_irqrestore(&data->txlock, flags);
1134
1135         if (!suspending)
1136                 return submit_tx_urb(hdev, urb);
1137
1138         usb_anchor_urb(urb, &data->deferred);
1139         schedule_work(&data->waker);
1140
1141         usb_free_urb(urb);
1142         return 0;
1143 }
1144
1145 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1146 {
1147         struct urb *urb;
1148
1149         BT_DBG("%s", hdev->name);
1150
1151         if (!test_bit(HCI_RUNNING, &hdev->flags))
1152                 return -EBUSY;
1153
1154         switch (bt_cb(skb)->pkt_type) {
1155         case HCI_COMMAND_PKT:
1156                 urb = alloc_ctrl_urb(hdev, skb);
1157                 if (IS_ERR(urb))
1158                         return PTR_ERR(urb);
1159
1160                 hdev->stat.cmd_tx++;
1161                 return submit_or_queue_tx_urb(hdev, urb);
1162
1163         case HCI_ACLDATA_PKT:
1164                 urb = alloc_bulk_urb(hdev, skb);
1165                 if (IS_ERR(urb))
1166                         return PTR_ERR(urb);
1167
1168                 hdev->stat.acl_tx++;
1169                 return submit_or_queue_tx_urb(hdev, urb);
1170
1171         case HCI_SCODATA_PKT:
1172                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1173                         return -ENODEV;
1174
1175                 urb = alloc_isoc_urb(hdev, skb);
1176                 if (IS_ERR(urb))
1177                         return PTR_ERR(urb);
1178
1179                 hdev->stat.sco_tx++;
1180                 return submit_tx_urb(hdev, urb);
1181         }
1182
1183         return -EILSEQ;
1184 }
1185
1186 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1187 {
1188         struct btusb_data *data = hci_get_drvdata(hdev);
1189
1190         BT_DBG("%s evt %d", hdev->name, evt);
1191
1192         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1193                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1194                 schedule_work(&data->work);
1195         }
1196 }
1197
1198 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1199 {
1200         struct btusb_data *data = hci_get_drvdata(hdev);
1201         struct usb_interface *intf = data->isoc;
1202         struct usb_endpoint_descriptor *ep_desc;
1203         int i, err;
1204
1205         if (!data->isoc)
1206                 return -ENODEV;
1207
1208         err = usb_set_interface(data->udev, 1, altsetting);
1209         if (err < 0) {
1210                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
1211                 return err;
1212         }
1213
1214         data->isoc_altsetting = altsetting;
1215
1216         data->isoc_tx_ep = NULL;
1217         data->isoc_rx_ep = NULL;
1218
1219         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1220                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1221
1222                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1223                         data->isoc_tx_ep = ep_desc;
1224                         continue;
1225                 }
1226
1227                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1228                         data->isoc_rx_ep = ep_desc;
1229                         continue;
1230                 }
1231         }
1232
1233         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1234                 BT_ERR("%s invalid SCO descriptors", hdev->name);
1235                 return -ENODEV;
1236         }
1237
1238         return 0;
1239 }
1240
1241 static void btusb_work(struct work_struct *work)
1242 {
1243         struct btusb_data *data = container_of(work, struct btusb_data, work);
1244         struct hci_dev *hdev = data->hdev;
1245         int new_alts;
1246         int err;
1247
1248         if (data->sco_num > 0) {
1249                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1250                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1251                         if (err < 0) {
1252                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1253                                 usb_kill_anchored_urbs(&data->isoc_anchor);
1254                                 return;
1255                         }
1256
1257                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1258                 }
1259
1260                 if (hdev->voice_setting & 0x0020) {
1261                         static const int alts[3] = { 2, 4, 5 };
1262
1263                         new_alts = alts[data->sco_num - 1];
1264                 } else {
1265                         new_alts = data->sco_num;
1266                 }
1267
1268                 if (data->isoc_altsetting != new_alts) {
1269                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1270                         usb_kill_anchored_urbs(&data->isoc_anchor);
1271
1272                         if (__set_isoc_interface(hdev, new_alts) < 0)
1273                                 return;
1274                 }
1275
1276                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1277                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1278                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1279                         else
1280                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1281                 }
1282         } else {
1283                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1284                 usb_kill_anchored_urbs(&data->isoc_anchor);
1285
1286                 __set_isoc_interface(hdev, 0);
1287                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1288                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1289         }
1290 }
1291
1292 static void btusb_waker(struct work_struct *work)
1293 {
1294         struct btusb_data *data = container_of(work, struct btusb_data, waker);
1295         int err;
1296
1297         err = usb_autopm_get_interface(data->intf);
1298         if (err < 0)
1299                 return;
1300
1301         usb_autopm_put_interface(data->intf);
1302 }
1303
1304 static struct sk_buff *btusb_read_local_version(struct hci_dev *hdev)
1305 {
1306         struct sk_buff *skb;
1307
1308         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1309                              HCI_INIT_TIMEOUT);
1310         if (IS_ERR(skb)) {
1311                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION failed (%ld)",
1312                        hdev->name, PTR_ERR(skb));
1313                 return skb;
1314         }
1315
1316         if (skb->len != sizeof(struct hci_rp_read_local_version)) {
1317                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION event length mismatch",
1318                        hdev->name);
1319                 kfree_skb(skb);
1320                 return ERR_PTR(-EIO);
1321         }
1322
1323         return skb;
1324 }
1325
1326 static int btusb_setup_bcm92035(struct hci_dev *hdev)
1327 {
1328         struct sk_buff *skb;
1329         u8 val = 0x00;
1330
1331         BT_DBG("%s", hdev->name);
1332
1333         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1334         if (IS_ERR(skb))
1335                 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
1336         else
1337                 kfree_skb(skb);
1338
1339         return 0;
1340 }
1341
1342 static int btusb_setup_csr(struct hci_dev *hdev)
1343 {
1344         struct hci_rp_read_local_version *rp;
1345         struct sk_buff *skb;
1346         int ret;
1347
1348         BT_DBG("%s", hdev->name);
1349
1350         skb = btusb_read_local_version(hdev);
1351         if (IS_ERR(skb))
1352                 return -PTR_ERR(skb);
1353
1354         rp = (struct hci_rp_read_local_version *)skb->data;
1355
1356         if (!rp->status) {
1357                 if (le16_to_cpu(rp->manufacturer) != 10) {
1358                         /* Clear the reset quirk since this is not an actual
1359                          * early Bluetooth 1.1 device from CSR.
1360                          */
1361                         clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1362
1363                         /* These fake CSR controllers have all a broken
1364                          * stored link key handling and so just disable it.
1365                          */
1366                         set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY,
1367                                 &hdev->quirks);
1368                 }
1369         }
1370
1371         ret = -bt_to_errno(rp->status);
1372
1373         kfree_skb(skb);
1374
1375         return ret;
1376 }
1377
1378 #define RTL_FRAG_LEN 252
1379
1380 struct rtl_download_cmd {
1381         __u8 index;
1382         __u8 data[RTL_FRAG_LEN];
1383 } __packed;
1384
1385 struct rtl_download_response {
1386         __u8 status;
1387         __u8 index;
1388 } __packed;
1389
1390 struct rtl_rom_version_evt {
1391         __u8 status;
1392         __u8 version;
1393 } __packed;
1394
1395 struct rtl_epatch_header {
1396         __u8 signature[8];
1397         __le32 fw_version;
1398         __le16 num_patches;
1399 } __packed;
1400
1401 #define RTL_EPATCH_SIGNATURE    "Realtech"
1402 #define RTL_ROM_LMP_3499        0x3499
1403 #define RTL_ROM_LMP_8723A       0x1200
1404 #define RTL_ROM_LMP_8723B       0x8723
1405 #define RTL_ROM_LMP_8821A       0x8821
1406 #define RTL_ROM_LMP_8761A       0x8761
1407
1408 static int rtl_read_rom_version(struct hci_dev *hdev, u8 *version)
1409 {
1410         struct rtl_rom_version_evt *rom_version;
1411         struct sk_buff *skb;
1412         int ret;
1413
1414         /* Read RTL ROM version command */
1415         skb = __hci_cmd_sync(hdev, 0xfc6d, 0, NULL, HCI_INIT_TIMEOUT);
1416         if (IS_ERR(skb)) {
1417                 BT_ERR("%s: Read ROM version failed (%ld)",
1418                        hdev->name, PTR_ERR(skb));
1419                 return PTR_ERR(skb);
1420         }
1421
1422         if (skb->len != sizeof(*rom_version)) {
1423                 BT_ERR("%s: RTL version event length mismatch", hdev->name);
1424                 kfree_skb(skb);
1425                 return -EIO;
1426         }
1427
1428         rom_version = (struct rtl_rom_version_evt *)skb->data;
1429         BT_INFO("%s: rom_version status=%x version=%x",
1430                 hdev->name, rom_version->status, rom_version->version);
1431
1432         ret = rom_version->status;
1433         if (ret == 0)
1434                 *version = rom_version->version;
1435
1436         kfree_skb(skb);
1437         return ret;
1438 }
1439
1440 static int rtl8723b_parse_firmware(struct hci_dev *hdev, u16 lmp_subver,
1441                                    const struct firmware *fw,
1442                                    unsigned char **_buf)
1443 {
1444         const u8 extension_sig[] = { 0x51, 0x04, 0xfd, 0x77 };
1445         struct rtl_epatch_header *epatch_info;
1446         unsigned char *buf;
1447         int i, ret, len;
1448         size_t min_size;
1449         u8 opcode, length, data, rom_version = 0;
1450         int project_id = -1;
1451         const unsigned char *fwptr, *chip_id_base;
1452         const unsigned char *patch_length_base, *patch_offset_base;
1453         u32 patch_offset = 0;
1454         u16 patch_length, num_patches;
1455         const u16 project_id_to_lmp_subver[] = {
1456                 RTL_ROM_LMP_8723A,
1457                 RTL_ROM_LMP_8723B,
1458                 RTL_ROM_LMP_8821A,
1459                 RTL_ROM_LMP_8761A
1460         };
1461
1462         ret = rtl_read_rom_version(hdev, &rom_version);
1463         if (ret)
1464                 return -bt_to_errno(ret);
1465
1466         min_size = sizeof(struct rtl_epatch_header) + sizeof(extension_sig) + 3;
1467         if (fw->size < min_size)
1468                 return -EINVAL;
1469
1470         fwptr = fw->data + fw->size - sizeof(extension_sig);
1471         if (memcmp(fwptr, extension_sig, sizeof(extension_sig)) != 0) {
1472                 BT_ERR("%s: extension section signature mismatch", hdev->name);
1473                 return -EINVAL;
1474         }
1475
1476         /* Loop from the end of the firmware parsing instructions, until
1477          * we find an instruction that identifies the "project ID" for the
1478          * hardware supported by this firwmare file.
1479          * Once we have that, we double-check that that project_id is suitable
1480          * for the hardware we are working with.
1481          */
1482         while (fwptr >= fw->data + (sizeof(struct rtl_epatch_header) + 3)) {
1483                 opcode = *--fwptr;
1484                 length = *--fwptr;
1485                 data = *--fwptr;
1486
1487                 BT_DBG("check op=%x len=%x data=%x", opcode, length, data);
1488
1489                 if (opcode == 0xff) /* EOF */
1490                         break;
1491
1492                 if (length == 0) {
1493                         BT_ERR("%s: found instruction with length 0",
1494                                hdev->name);
1495                         return -EINVAL;
1496                 }
1497
1498                 if (opcode == 0 && length == 1) {
1499                         project_id = data;
1500                         break;
1501                 }
1502
1503                 fwptr -= length;
1504         }
1505
1506         if (project_id < 0) {
1507                 BT_ERR("%s: failed to find version instruction", hdev->name);
1508                 return -EINVAL;
1509         }
1510
1511         if (project_id >= ARRAY_SIZE(project_id_to_lmp_subver)) {
1512                 BT_ERR("%s: unknown project id %d", hdev->name, project_id);
1513                 return -EINVAL;
1514         }
1515
1516         if (lmp_subver != project_id_to_lmp_subver[project_id]) {
1517                 BT_ERR("%s: firmware is for %x but this is a %x", hdev->name,
1518                        project_id_to_lmp_subver[project_id], lmp_subver);
1519                 return -EINVAL;
1520         }
1521
1522         epatch_info = (struct rtl_epatch_header *)fw->data;
1523         if (memcmp(epatch_info->signature, RTL_EPATCH_SIGNATURE, 8) != 0) {
1524                 BT_ERR("%s: bad EPATCH signature", hdev->name);
1525                 return -EINVAL;
1526         }
1527
1528         num_patches = le16_to_cpu(epatch_info->num_patches);
1529         BT_DBG("fw_version=%x, num_patches=%d",
1530                le32_to_cpu(epatch_info->fw_version), num_patches);
1531
1532         /* After the rtl_epatch_header there is a funky patch metadata section.
1533          * Assuming 2 patches, the layout is:
1534          * ChipID1 ChipID2 PatchLength1 PatchLength2 PatchOffset1 PatchOffset2
1535          *
1536          * Find the right patch for this chip.
1537          */
1538         min_size += 8 * num_patches;
1539         if (fw->size < min_size)
1540                 return -EINVAL;
1541
1542         chip_id_base = fw->data + sizeof(struct rtl_epatch_header);
1543         patch_length_base = chip_id_base + (sizeof(u16) * num_patches);
1544         patch_offset_base = patch_length_base + (sizeof(u16) * num_patches);
1545         for (i = 0; i < num_patches; i++) {
1546                 u16 chip_id = get_unaligned_le16(chip_id_base +
1547                                                  (i * sizeof(u16)));
1548                 if (chip_id == rom_version + 1) {
1549                         patch_length = get_unaligned_le16(patch_length_base +
1550                                                           (i * sizeof(u16)));
1551                         patch_offset = get_unaligned_le32(patch_offset_base +
1552                                                           (i * sizeof(u32)));
1553                         break;
1554                 }
1555         }
1556
1557         if (!patch_offset) {
1558                 BT_ERR("%s: didn't find patch for chip id %d",
1559                        hdev->name, rom_version);
1560                 return -EINVAL;
1561         }
1562
1563         BT_DBG("length=%x offset=%x index %d", patch_length, patch_offset, i);
1564         min_size = patch_offset + patch_length;
1565         if (fw->size < min_size)
1566                 return -EINVAL;
1567
1568         /* Copy the firmware into a new buffer and write the version at
1569          * the end.
1570          */
1571         len = patch_length;
1572         buf = kmemdup(fw->data + patch_offset, patch_length, GFP_KERNEL);
1573         if (!buf)
1574                 return -ENOMEM;
1575
1576         memcpy(buf + patch_length - 4, &epatch_info->fw_version, 4);
1577
1578         *_buf = buf;
1579         return len;
1580 }
1581
1582 static int rtl_download_firmware(struct hci_dev *hdev,
1583                                  const unsigned char *data, int fw_len)
1584 {
1585         struct rtl_download_cmd *dl_cmd;
1586         int frag_num = fw_len / RTL_FRAG_LEN + 1;
1587         int frag_len = RTL_FRAG_LEN;
1588         int ret = 0;
1589         int i;
1590
1591         dl_cmd = kmalloc(sizeof(struct rtl_download_cmd), GFP_KERNEL);
1592         if (!dl_cmd)
1593                 return -ENOMEM;
1594
1595         for (i = 0; i < frag_num; i++) {
1596                 struct rtl_download_response *dl_resp;
1597                 struct sk_buff *skb;
1598
1599                 BT_DBG("download fw (%d/%d)", i, frag_num);
1600
1601                 dl_cmd->index = i;
1602                 if (i == (frag_num - 1)) {
1603                         dl_cmd->index |= 0x80; /* data end */
1604                         frag_len = fw_len % RTL_FRAG_LEN;
1605                 }
1606                 memcpy(dl_cmd->data, data, frag_len);
1607
1608                 /* Send download command */
1609                 skb = __hci_cmd_sync(hdev, 0xfc20, frag_len + 1, dl_cmd,
1610                                      HCI_INIT_TIMEOUT);
1611                 if (IS_ERR(skb)) {
1612                         BT_ERR("%s: download fw command failed (%ld)",
1613                                hdev->name, PTR_ERR(skb));
1614                         ret = -PTR_ERR(skb);
1615                         goto out;
1616                 }
1617
1618                 if (skb->len != sizeof(*dl_resp)) {
1619                         BT_ERR("%s: download fw event length mismatch",
1620                                hdev->name);
1621                         kfree_skb(skb);
1622                         ret = -EIO;
1623                         goto out;
1624                 }
1625
1626                 dl_resp = (struct rtl_download_response *)skb->data;
1627                 if (dl_resp->status != 0) {
1628                         kfree_skb(skb);
1629                         ret = bt_to_errno(dl_resp->status);
1630                         goto out;
1631                 }
1632
1633                 kfree_skb(skb);
1634                 data += RTL_FRAG_LEN;
1635         }
1636
1637 out:
1638         kfree(dl_cmd);
1639         return ret;
1640 }
1641
1642 static int btusb_setup_rtl8723a(struct hci_dev *hdev)
1643 {
1644         struct btusb_data *data = dev_get_drvdata(&hdev->dev);
1645         struct usb_device *udev = interface_to_usbdev(data->intf);
1646         const struct firmware *fw;
1647         int ret;
1648
1649         BT_INFO("%s: rtl: loading rtl_bt/rtl8723a_fw.bin", hdev->name);
1650         ret = request_firmware(&fw, "rtl_bt/rtl8723a_fw.bin", &udev->dev);
1651         if (ret < 0) {
1652                 BT_ERR("%s: Failed to load rtl_bt/rtl8723a_fw.bin", hdev->name);
1653                 return ret;
1654         }
1655
1656         if (fw->size < 8) {
1657                 ret = -EINVAL;
1658                 goto out;
1659         }
1660
1661         /* Check that the firmware doesn't have the epatch signature
1662          * (which is only for RTL8723B and newer).
1663          */
1664         if (!memcmp(fw->data, RTL_EPATCH_SIGNATURE, 8)) {
1665                 BT_ERR("%s: unexpected EPATCH signature!", hdev->name);
1666                 ret = -EINVAL;
1667                 goto out;
1668         }
1669
1670         ret = rtl_download_firmware(hdev, fw->data, fw->size);
1671
1672 out:
1673         release_firmware(fw);
1674         return ret;
1675 }
1676
1677 static int btusb_setup_rtl8723b(struct hci_dev *hdev, u16 lmp_subver,
1678                                 const char *fw_name)
1679 {
1680         struct btusb_data *data = dev_get_drvdata(&hdev->dev);
1681         struct usb_device *udev = interface_to_usbdev(data->intf);
1682         unsigned char *fw_data = NULL;
1683         const struct firmware *fw;
1684         int ret;
1685
1686         BT_INFO("%s: rtl: loading %s", hdev->name, fw_name);
1687         ret = request_firmware(&fw, fw_name, &udev->dev);
1688         if (ret < 0) {
1689                 BT_ERR("%s: Failed to load %s", hdev->name, fw_name);
1690                 return ret;
1691         }
1692
1693         ret = rtl8723b_parse_firmware(hdev, lmp_subver, fw, &fw_data);
1694         if (ret < 0)
1695                 goto out;
1696
1697         ret = rtl_download_firmware(hdev, fw_data, ret);
1698         kfree(fw_data);
1699         if (ret < 0)
1700                 goto out;
1701
1702 out:
1703         release_firmware(fw);
1704         return ret;
1705 }
1706
1707 static int btusb_setup_realtek(struct hci_dev *hdev)
1708 {
1709         struct sk_buff *skb;
1710         struct hci_rp_read_local_version *resp;
1711         u16 lmp_subver;
1712
1713         skb = btusb_read_local_version(hdev);
1714         if (IS_ERR(skb))
1715                 return -PTR_ERR(skb);
1716
1717         resp = (struct hci_rp_read_local_version *)skb->data;
1718         BT_INFO("%s: rtl: examining hci_ver=%02x hci_rev=%04x lmp_ver=%02x "
1719                 "lmp_subver=%04x", hdev->name, resp->hci_ver, resp->hci_rev,
1720                 resp->lmp_ver, resp->lmp_subver);
1721
1722         lmp_subver = le16_to_cpu(resp->lmp_subver);
1723         kfree_skb(skb);
1724
1725         /* Match a set of subver values that correspond to stock firmware,
1726          * which is not compatible with standard btusb.
1727          * If matched, upload an alternative firmware that does conform to
1728          * standard btusb. Once that firmware is uploaded, the subver changes
1729          * to a different value.
1730          */
1731         switch (lmp_subver) {
1732         case RTL_ROM_LMP_8723A:
1733         case RTL_ROM_LMP_3499:
1734                 return btusb_setup_rtl8723a(hdev);
1735         case RTL_ROM_LMP_8723B:
1736                 return btusb_setup_rtl8723b(hdev, lmp_subver,
1737                                             "rtl_bt/rtl8723b_fw.bin");
1738         case RTL_ROM_LMP_8821A:
1739                 return btusb_setup_rtl8723b(hdev, lmp_subver,
1740                                             "rtl_bt/rtl8821a_fw.bin");
1741         case RTL_ROM_LMP_8761A:
1742                 return btusb_setup_rtl8723b(hdev, lmp_subver,
1743                                             "rtl_bt/rtl8761a_fw.bin");
1744         default:
1745                 BT_INFO("rtl: assuming no firmware upload needed.");
1746                 return 0;
1747         }
1748 }
1749
1750 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1751                                                        struct intel_version *ver)
1752 {
1753         const struct firmware *fw;
1754         char fwname[64];
1755         int ret;
1756
1757         snprintf(fwname, sizeof(fwname),
1758                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1759                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
1760                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1761                  ver->fw_build_ww, ver->fw_build_yy);
1762
1763         ret = request_firmware(&fw, fwname, &hdev->dev);
1764         if (ret < 0) {
1765                 if (ret == -EINVAL) {
1766                         BT_ERR("%s Intel firmware file request failed (%d)",
1767                                hdev->name, ret);
1768                         return NULL;
1769                 }
1770
1771                 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1772                        hdev->name, fwname, ret);
1773
1774                 /* If the correct firmware patch file is not found, use the
1775                  * default firmware patch file instead
1776                  */
1777                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1778                          ver->hw_platform, ver->hw_variant);
1779                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1780                         BT_ERR("%s failed to open default Intel fw file: %s",
1781                                hdev->name, fwname);
1782                         return NULL;
1783                 }
1784         }
1785
1786         BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1787
1788         return fw;
1789 }
1790
1791 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1792                                       const struct firmware *fw,
1793                                       const u8 **fw_ptr, int *disable_patch)
1794 {
1795         struct sk_buff *skb;
1796         struct hci_command_hdr *cmd;
1797         const u8 *cmd_param;
1798         struct hci_event_hdr *evt = NULL;
1799         const u8 *evt_param = NULL;
1800         int remain = fw->size - (*fw_ptr - fw->data);
1801
1802         /* The first byte indicates the types of the patch command or event.
1803          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1804          * in the current firmware buffer doesn't start with 0x01 or
1805          * the size of remain buffer is smaller than HCI command header,
1806          * the firmware file is corrupted and it should stop the patching
1807          * process.
1808          */
1809         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1810                 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1811                 return -EINVAL;
1812         }
1813         (*fw_ptr)++;
1814         remain--;
1815
1816         cmd = (struct hci_command_hdr *)(*fw_ptr);
1817         *fw_ptr += sizeof(*cmd);
1818         remain -= sizeof(*cmd);
1819
1820         /* Ensure that the remain firmware data is long enough than the length
1821          * of command parameter. If not, the firmware file is corrupted.
1822          */
1823         if (remain < cmd->plen) {
1824                 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1825                 return -EFAULT;
1826         }
1827
1828         /* If there is a command that loads a patch in the firmware
1829          * file, then enable the patch upon success, otherwise just
1830          * disable the manufacturer mode, for example patch activation
1831          * is not required when the default firmware patch file is used
1832          * because there are no patch data to load.
1833          */
1834         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1835                 *disable_patch = 0;
1836
1837         cmd_param = *fw_ptr;
1838         *fw_ptr += cmd->plen;
1839         remain -= cmd->plen;
1840
1841         /* This reads the expected events when the above command is sent to the
1842          * device. Some vendor commands expects more than one events, for
1843          * example command status event followed by vendor specific event.
1844          * For this case, it only keeps the last expected event. so the command
1845          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1846          * last expected event.
1847          */
1848         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1849                 (*fw_ptr)++;
1850                 remain--;
1851
1852                 evt = (struct hci_event_hdr *)(*fw_ptr);
1853                 *fw_ptr += sizeof(*evt);
1854                 remain -= sizeof(*evt);
1855
1856                 if (remain < evt->plen) {
1857                         BT_ERR("%s Intel fw corrupted: invalid evt len",
1858                                hdev->name);
1859                         return -EFAULT;
1860                 }
1861
1862                 evt_param = *fw_ptr;
1863                 *fw_ptr += evt->plen;
1864                 remain -= evt->plen;
1865         }
1866
1867         /* Every HCI commands in the firmware file has its correspond event.
1868          * If event is not found or remain is smaller than zero, the firmware
1869          * file is corrupted.
1870          */
1871         if (!evt || !evt_param || remain < 0) {
1872                 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1873                 return -EFAULT;
1874         }
1875
1876         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1877                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1878         if (IS_ERR(skb)) {
1879                 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1880                        hdev->name, cmd->opcode, PTR_ERR(skb));
1881                 return PTR_ERR(skb);
1882         }
1883
1884         /* It ensures that the returned event matches the event data read from
1885          * the firmware file. At fist, it checks the length and then
1886          * the contents of the event.
1887          */
1888         if (skb->len != evt->plen) {
1889                 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1890                        le16_to_cpu(cmd->opcode));
1891                 kfree_skb(skb);
1892                 return -EFAULT;
1893         }
1894
1895         if (memcmp(skb->data, evt_param, evt->plen)) {
1896                 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1897                        hdev->name, le16_to_cpu(cmd->opcode));
1898                 kfree_skb(skb);
1899                 return -EFAULT;
1900         }
1901         kfree_skb(skb);
1902
1903         return 0;
1904 }
1905
1906 static int btusb_setup_intel(struct hci_dev *hdev)
1907 {
1908         struct sk_buff *skb;
1909         const struct firmware *fw;
1910         const u8 *fw_ptr;
1911         int disable_patch;
1912         struct intel_version *ver;
1913
1914         const u8 mfg_enable[] = { 0x01, 0x00 };
1915         const u8 mfg_disable[] = { 0x00, 0x00 };
1916         const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
1917         const u8 mfg_reset_activate[] = { 0x00, 0x02 };
1918
1919         BT_DBG("%s", hdev->name);
1920
1921         /* The controller has a bug with the first HCI command sent to it
1922          * returning number of completed commands as zero. This would stall the
1923          * command processing in the Bluetooth core.
1924          *
1925          * As a workaround, send HCI Reset command first which will reset the
1926          * number of completed commands and allow normal command processing
1927          * from now on.
1928          */
1929         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1930         if (IS_ERR(skb)) {
1931                 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1932                        hdev->name, PTR_ERR(skb));
1933                 return PTR_ERR(skb);
1934         }
1935         kfree_skb(skb);
1936
1937         /* Read Intel specific controller version first to allow selection of
1938          * which firmware file to load.
1939          *
1940          * The returned information are hardware variant and revision plus
1941          * firmware variant, revision and build number.
1942          */
1943         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1944         if (IS_ERR(skb)) {
1945                 BT_ERR("%s reading Intel fw version command failed (%ld)",
1946                        hdev->name, PTR_ERR(skb));
1947                 return PTR_ERR(skb);
1948         }
1949
1950         if (skb->len != sizeof(*ver)) {
1951                 BT_ERR("%s Intel version event length mismatch", hdev->name);
1952                 kfree_skb(skb);
1953                 return -EIO;
1954         }
1955
1956         ver = (struct intel_version *)skb->data;
1957         if (ver->status) {
1958                 BT_ERR("%s Intel fw version event failed (%02x)", hdev->name,
1959                        ver->status);
1960                 kfree_skb(skb);
1961                 return -bt_to_errno(ver->status);
1962         }
1963
1964         BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1965                 hdev->name, ver->hw_platform, ver->hw_variant,
1966                 ver->hw_revision, ver->fw_variant,  ver->fw_revision,
1967                 ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
1968                 ver->fw_patch_num);
1969
1970         /* fw_patch_num indicates the version of patch the device currently
1971          * have. If there is no patch data in the device, it is always 0x00.
1972          * So, if it is other than 0x00, no need to patch the deivce again.
1973          */
1974         if (ver->fw_patch_num) {
1975                 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1976                         hdev->name, ver->fw_patch_num);
1977                 kfree_skb(skb);
1978                 btintel_check_bdaddr(hdev);
1979                 return 0;
1980         }
1981
1982         /* Opens the firmware patch file based on the firmware version read
1983          * from the controller. If it fails to open the matching firmware
1984          * patch file, it tries to open the default firmware patch file.
1985          * If no patch file is found, allow the device to operate without
1986          * a patch.
1987          */
1988         fw = btusb_setup_intel_get_fw(hdev, ver);
1989         if (!fw) {
1990                 kfree_skb(skb);
1991                 btintel_check_bdaddr(hdev);
1992                 return 0;
1993         }
1994         fw_ptr = fw->data;
1995
1996         kfree_skb(skb);
1997
1998         /* This Intel specific command enables the manufacturer mode of the
1999          * controller.
2000          *
2001          * Only while this mode is enabled, the driver can download the
2002          * firmware patch data and configuration parameters.
2003          */
2004         skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
2005         if (IS_ERR(skb)) {
2006                 BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
2007                        hdev->name, PTR_ERR(skb));
2008                 release_firmware(fw);
2009                 return PTR_ERR(skb);
2010         }
2011
2012         if (skb->data[0]) {
2013                 u8 evt_status = skb->data[0];
2014
2015                 BT_ERR("%s enable Intel manufacturer mode event failed (%02x)",
2016                        hdev->name, evt_status);
2017                 kfree_skb(skb);
2018                 release_firmware(fw);
2019                 return -bt_to_errno(evt_status);
2020         }
2021         kfree_skb(skb);
2022
2023         disable_patch = 1;
2024
2025         /* The firmware data file consists of list of Intel specific HCI
2026          * commands and its expected events. The first byte indicates the
2027          * type of the message, either HCI command or HCI event.
2028          *
2029          * It reads the command and its expected event from the firmware file,
2030          * and send to the controller. Once __hci_cmd_sync_ev() returns,
2031          * the returned event is compared with the event read from the firmware
2032          * file and it will continue until all the messages are downloaded to
2033          * the controller.
2034          *
2035          * Once the firmware patching is completed successfully,
2036          * the manufacturer mode is disabled with reset and activating the
2037          * downloaded patch.
2038          *
2039          * If the firmware patching fails, the manufacturer mode is
2040          * disabled with reset and deactivating the patch.
2041          *
2042          * If the default patch file is used, no reset is done when disabling
2043          * the manufacturer.
2044          */
2045         while (fw->size > fw_ptr - fw->data) {
2046                 int ret;
2047
2048                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
2049                                                  &disable_patch);
2050                 if (ret < 0)
2051                         goto exit_mfg_deactivate;
2052         }
2053
2054         release_firmware(fw);
2055
2056         if (disable_patch)
2057                 goto exit_mfg_disable;
2058
2059         /* Patching completed successfully and disable the manufacturer mode
2060          * with reset and activate the downloaded firmware patches.
2061          */
2062         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
2063                              mfg_reset_activate, HCI_INIT_TIMEOUT);
2064         if (IS_ERR(skb)) {
2065                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
2066                        hdev->name, PTR_ERR(skb));
2067                 return PTR_ERR(skb);
2068         }
2069         kfree_skb(skb);
2070
2071         BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
2072                 hdev->name);
2073
2074         btintel_check_bdaddr(hdev);
2075         return 0;
2076
2077 exit_mfg_disable:
2078         /* Disable the manufacturer mode without reset */
2079         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
2080                              HCI_INIT_TIMEOUT);
2081         if (IS_ERR(skb)) {
2082                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
2083                        hdev->name, PTR_ERR(skb));
2084                 return PTR_ERR(skb);
2085         }
2086         kfree_skb(skb);
2087
2088         BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
2089
2090         btintel_check_bdaddr(hdev);
2091         return 0;
2092
2093 exit_mfg_deactivate:
2094         release_firmware(fw);
2095
2096         /* Patching failed. Disable the manufacturer mode with reset and
2097          * deactivate the downloaded firmware patches.
2098          */
2099         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
2100                              mfg_reset_deactivate, HCI_INIT_TIMEOUT);
2101         if (IS_ERR(skb)) {
2102                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
2103                        hdev->name, PTR_ERR(skb));
2104                 return PTR_ERR(skb);
2105         }
2106         kfree_skb(skb);
2107
2108         BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
2109                 hdev->name);
2110
2111         btintel_check_bdaddr(hdev);
2112         return 0;
2113 }
2114
2115 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
2116 {
2117         struct sk_buff *skb;
2118         struct hci_event_hdr *hdr;
2119         struct hci_ev_cmd_complete *evt;
2120
2121         skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_ATOMIC);
2122         if (!skb)
2123                 return -ENOMEM;
2124
2125         hdr = (struct hci_event_hdr *)skb_put(skb, sizeof(*hdr));
2126         hdr->evt = HCI_EV_CMD_COMPLETE;
2127         hdr->plen = sizeof(*evt) + 1;
2128
2129         evt = (struct hci_ev_cmd_complete *)skb_put(skb, sizeof(*evt));
2130         evt->ncmd = 0x01;
2131         evt->opcode = cpu_to_le16(opcode);
2132
2133         *skb_put(skb, 1) = 0x00;
2134
2135         bt_cb(skb)->pkt_type = HCI_EVENT_PKT;
2136
2137         return hci_recv_frame(hdev, skb);
2138 }
2139
2140 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
2141                                  int count)
2142 {
2143         /* When the device is in bootloader mode, then it can send
2144          * events via the bulk endpoint. These events are treated the
2145          * same way as the ones received from the interrupt endpoint.
2146          */
2147         if (test_bit(BTUSB_BOOTLOADER, &data->flags))
2148                 return btusb_recv_intr(data, buffer, count);
2149
2150         return btusb_recv_bulk(data, buffer, count);
2151 }
2152
2153 static void btusb_intel_bootup(struct btusb_data *data, const void *ptr,
2154                                unsigned int len)
2155 {
2156         const struct intel_bootup *evt = ptr;
2157
2158         if (len != sizeof(*evt))
2159                 return;
2160
2161         if (test_and_clear_bit(BTUSB_BOOTING, &data->flags)) {
2162                 smp_mb__after_atomic();
2163                 wake_up_bit(&data->flags, BTUSB_BOOTING);
2164         }
2165 }
2166
2167 static void btusb_intel_secure_send_result(struct btusb_data *data,
2168                                            const void *ptr, unsigned int len)
2169 {
2170         const struct intel_secure_send_result *evt = ptr;
2171
2172         if (len != sizeof(*evt))
2173                 return;
2174
2175         if (evt->result)
2176                 set_bit(BTUSB_FIRMWARE_FAILED, &data->flags);
2177
2178         if (test_and_clear_bit(BTUSB_DOWNLOADING, &data->flags) &&
2179             test_bit(BTUSB_FIRMWARE_LOADED, &data->flags)) {
2180                 smp_mb__after_atomic();
2181                 wake_up_bit(&data->flags, BTUSB_DOWNLOADING);
2182         }
2183 }
2184
2185 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
2186 {
2187         struct btusb_data *data = hci_get_drvdata(hdev);
2188
2189         if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
2190                 struct hci_event_hdr *hdr = (void *)skb->data;
2191
2192                 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
2193                     hdr->plen > 0) {
2194                         const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
2195                         unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
2196
2197                         switch (skb->data[2]) {
2198                         case 0x02:
2199                                 /* When switching to the operational firmware
2200                                  * the device sends a vendor specific event
2201                                  * indicating that the bootup completed.
2202                                  */
2203                                 btusb_intel_bootup(data, ptr, len);
2204                                 break;
2205                         case 0x06:
2206                                 /* When the firmware loading completes the
2207                                  * device sends out a vendor specific event
2208                                  * indicating the result of the firmware
2209                                  * loading.
2210                                  */
2211                                 btusb_intel_secure_send_result(data, ptr, len);
2212                                 break;
2213                         }
2214                 }
2215         }
2216
2217         return hci_recv_frame(hdev, skb);
2218 }
2219
2220 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
2221 {
2222         struct btusb_data *data = hci_get_drvdata(hdev);
2223         struct urb *urb;
2224
2225         BT_DBG("%s", hdev->name);
2226
2227         if (!test_bit(HCI_RUNNING, &hdev->flags))
2228                 return -EBUSY;
2229
2230         switch (bt_cb(skb)->pkt_type) {
2231         case HCI_COMMAND_PKT:
2232                 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
2233                         struct hci_command_hdr *cmd = (void *)skb->data;
2234                         __u16 opcode = le16_to_cpu(cmd->opcode);
2235
2236                         /* When in bootloader mode and the command 0xfc09
2237                          * is received, it needs to be send down the
2238                          * bulk endpoint. So allocate a bulk URB instead.
2239                          */
2240                         if (opcode == 0xfc09)
2241                                 urb = alloc_bulk_urb(hdev, skb);
2242                         else
2243                                 urb = alloc_ctrl_urb(hdev, skb);
2244
2245                         /* When the 0xfc01 command is issued to boot into
2246                          * the operational firmware, it will actually not
2247                          * send a command complete event. To keep the flow
2248                          * control working inject that event here.
2249                          */
2250                         if (opcode == 0xfc01)
2251                                 inject_cmd_complete(hdev, opcode);
2252                 } else {
2253                         urb = alloc_ctrl_urb(hdev, skb);
2254                 }
2255                 if (IS_ERR(urb))
2256                         return PTR_ERR(urb);
2257
2258                 hdev->stat.cmd_tx++;
2259                 return submit_or_queue_tx_urb(hdev, urb);
2260
2261         case HCI_ACLDATA_PKT:
2262                 urb = alloc_bulk_urb(hdev, skb);
2263                 if (IS_ERR(urb))
2264                         return PTR_ERR(urb);
2265
2266                 hdev->stat.acl_tx++;
2267                 return submit_or_queue_tx_urb(hdev, urb);
2268
2269         case HCI_SCODATA_PKT:
2270                 if (hci_conn_num(hdev, SCO_LINK) < 1)
2271                         return -ENODEV;
2272
2273                 urb = alloc_isoc_urb(hdev, skb);
2274                 if (IS_ERR(urb))
2275                         return PTR_ERR(urb);
2276
2277                 hdev->stat.sco_tx++;
2278                 return submit_tx_urb(hdev, urb);
2279         }
2280
2281         return -EILSEQ;
2282 }
2283
2284 static int btusb_intel_secure_send(struct hci_dev *hdev, u8 fragment_type,
2285                                    u32 plen, const void *param)
2286 {
2287         while (plen > 0) {
2288                 struct sk_buff *skb;
2289                 u8 cmd_param[253], fragment_len = (plen > 252) ? 252 : plen;
2290
2291                 cmd_param[0] = fragment_type;
2292                 memcpy(cmd_param + 1, param, fragment_len);
2293
2294                 skb = __hci_cmd_sync(hdev, 0xfc09, fragment_len + 1,
2295                                      cmd_param, HCI_INIT_TIMEOUT);
2296                 if (IS_ERR(skb))
2297                         return PTR_ERR(skb);
2298
2299                 kfree_skb(skb);
2300
2301                 plen -= fragment_len;
2302                 param += fragment_len;
2303         }
2304
2305         return 0;
2306 }
2307
2308 static void btusb_intel_version_info(struct hci_dev *hdev,
2309                                      struct intel_version *ver)
2310 {
2311         const char *variant;
2312
2313         switch (ver->fw_variant) {
2314         case 0x06:
2315                 variant = "Bootloader";
2316                 break;
2317         case 0x23:
2318                 variant = "Firmware";
2319                 break;
2320         default:
2321                 return;
2322         }
2323
2324         BT_INFO("%s: %s revision %u.%u build %u week %u %u", hdev->name,
2325                 variant, ver->fw_revision >> 4, ver->fw_revision & 0x0f,
2326                 ver->fw_build_num, ver->fw_build_ww, 2000 + ver->fw_build_yy);
2327 }
2328
2329 static int btusb_setup_intel_new(struct hci_dev *hdev)
2330 {
2331         static const u8 reset_param[] = { 0x00, 0x01, 0x00, 0x01,
2332                                           0x00, 0x08, 0x04, 0x00 };
2333         struct btusb_data *data = hci_get_drvdata(hdev);
2334         struct sk_buff *skb;
2335         struct intel_version *ver;
2336         struct intel_boot_params *params;
2337         const struct firmware *fw;
2338         const u8 *fw_ptr;
2339         u32 frag_len;
2340         char fwname[64];
2341         ktime_t calltime, delta, rettime;
2342         unsigned long long duration;
2343         int err;
2344
2345         BT_DBG("%s", hdev->name);
2346
2347         calltime = ktime_get();
2348
2349         /* Read the Intel version information to determine if the device
2350          * is in bootloader mode or if it already has operational firmware
2351          * loaded.
2352          */
2353         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
2354         if (IS_ERR(skb)) {
2355                 BT_ERR("%s: Reading Intel version information failed (%ld)",
2356                        hdev->name, PTR_ERR(skb));
2357                 return PTR_ERR(skb);
2358         }
2359
2360         if (skb->len != sizeof(*ver)) {
2361                 BT_ERR("%s: Intel version event size mismatch", hdev->name);
2362                 kfree_skb(skb);
2363                 return -EILSEQ;
2364         }
2365
2366         ver = (struct intel_version *)skb->data;
2367         if (ver->status) {
2368                 BT_ERR("%s: Intel version command failure (%02x)",
2369                        hdev->name, ver->status);
2370                 err = -bt_to_errno(ver->status);
2371                 kfree_skb(skb);
2372                 return err;
2373         }
2374
2375         /* The hardware platform number has a fixed value of 0x37 and
2376          * for now only accept this single value.
2377          */
2378         if (ver->hw_platform != 0x37) {
2379                 BT_ERR("%s: Unsupported Intel hardware platform (%u)",
2380                        hdev->name, ver->hw_platform);
2381                 kfree_skb(skb);
2382                 return -EINVAL;
2383         }
2384
2385         /* At the moment only the hardware variant iBT 3.0 (LnP/SfP) is
2386          * supported by this firmware loading method. This check has been
2387          * put in place to ensure correct forward compatibility options
2388          * when newer hardware variants come along.
2389          */
2390         if (ver->hw_variant != 0x0b) {
2391                 BT_ERR("%s: Unsupported Intel hardware variant (%u)",
2392                        hdev->name, ver->hw_variant);
2393                 kfree_skb(skb);
2394                 return -EINVAL;
2395         }
2396
2397         btusb_intel_version_info(hdev, ver);
2398
2399         /* The firmware variant determines if the device is in bootloader
2400          * mode or is running operational firmware. The value 0x06 identifies
2401          * the bootloader and the value 0x23 identifies the operational
2402          * firmware.
2403          *
2404          * When the operational firmware is already present, then only
2405          * the check for valid Bluetooth device address is needed. This
2406          * determines if the device will be added as configured or
2407          * unconfigured controller.
2408          *
2409          * It is not possible to use the Secure Boot Parameters in this
2410          * case since that command is only available in bootloader mode.
2411          */
2412         if (ver->fw_variant == 0x23) {
2413                 kfree_skb(skb);
2414                 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2415                 btintel_check_bdaddr(hdev);
2416                 return 0;
2417         }
2418
2419         /* If the device is not in bootloader mode, then the only possible
2420          * choice is to return an error and abort the device initialization.
2421          */
2422         if (ver->fw_variant != 0x06) {
2423                 BT_ERR("%s: Unsupported Intel firmware variant (%u)",
2424                        hdev->name, ver->fw_variant);
2425                 kfree_skb(skb);
2426                 return -ENODEV;
2427         }
2428
2429         kfree_skb(skb);
2430
2431         /* Read the secure boot parameters to identify the operating
2432          * details of the bootloader.
2433          */
2434         skb = __hci_cmd_sync(hdev, 0xfc0d, 0, NULL, HCI_INIT_TIMEOUT);
2435         if (IS_ERR(skb)) {
2436                 BT_ERR("%s: Reading Intel boot parameters failed (%ld)",
2437                        hdev->name, PTR_ERR(skb));
2438                 return PTR_ERR(skb);
2439         }
2440
2441         if (skb->len != sizeof(*params)) {
2442                 BT_ERR("%s: Intel boot parameters size mismatch", hdev->name);
2443                 kfree_skb(skb);
2444                 return -EILSEQ;
2445         }
2446
2447         params = (struct intel_boot_params *)skb->data;
2448         if (params->status) {
2449                 BT_ERR("%s: Intel boot parameters command failure (%02x)",
2450                        hdev->name, params->status);
2451                 err = -bt_to_errno(params->status);
2452                 kfree_skb(skb);
2453                 return err;
2454         }
2455
2456         BT_INFO("%s: Device revision is %u", hdev->name,
2457                 le16_to_cpu(params->dev_revid));
2458
2459         BT_INFO("%s: Secure boot is %s", hdev->name,
2460                 params->secure_boot ? "enabled" : "disabled");
2461
2462         BT_INFO("%s: Minimum firmware build %u week %u %u", hdev->name,
2463                 params->min_fw_build_nn, params->min_fw_build_cw,
2464                 2000 + params->min_fw_build_yy);
2465
2466         /* It is required that every single firmware fragment is acknowledged
2467          * with a command complete event. If the boot parameters indicate
2468          * that this bootloader does not send them, then abort the setup.
2469          */
2470         if (params->limited_cce != 0x00) {
2471                 BT_ERR("%s: Unsupported Intel firmware loading method (%u)",
2472                        hdev->name, params->limited_cce);
2473                 kfree_skb(skb);
2474                 return -EINVAL;
2475         }
2476
2477         /* If the OTP has no valid Bluetooth device address, then there will
2478          * also be no valid address for the operational firmware.
2479          */
2480         if (!bacmp(&params->otp_bdaddr, BDADDR_ANY)) {
2481                 BT_INFO("%s: No device address configured", hdev->name);
2482                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2483         }
2484
2485         /* With this Intel bootloader only the hardware variant and device
2486          * revision information are used to select the right firmware.
2487          *
2488          * Currently this bootloader support is limited to hardware variant
2489          * iBT 3.0 (LnP/SfP) which is identified by the value 11 (0x0b).
2490          */
2491         snprintf(fwname, sizeof(fwname), "intel/ibt-11-%u.sfi",
2492                  le16_to_cpu(params->dev_revid));
2493
2494         err = request_firmware(&fw, fwname, &hdev->dev);
2495         if (err < 0) {
2496                 BT_ERR("%s: Failed to load Intel firmware file (%d)",
2497                        hdev->name, err);
2498                 kfree_skb(skb);
2499                 return err;
2500         }
2501
2502         BT_INFO("%s: Found device firmware: %s", hdev->name, fwname);
2503
2504         kfree_skb(skb);
2505
2506         if (fw->size < 644) {
2507                 BT_ERR("%s: Invalid size of firmware file (%zu)",
2508                        hdev->name, fw->size);
2509                 err = -EBADF;
2510                 goto done;
2511         }
2512
2513         set_bit(BTUSB_DOWNLOADING, &data->flags);
2514
2515         /* Start the firmware download transaction with the Init fragment
2516          * represented by the 128 bytes of CSS header.
2517          */
2518         err = btusb_intel_secure_send(hdev, 0x00, 128, fw->data);
2519         if (err < 0) {
2520                 BT_ERR("%s: Failed to send firmware header (%d)",
2521                        hdev->name, err);
2522                 goto done;
2523         }
2524
2525         /* Send the 256 bytes of public key information from the firmware
2526          * as the PKey fragment.
2527          */
2528         err = btusb_intel_secure_send(hdev, 0x03, 256, fw->data + 128);
2529         if (err < 0) {
2530                 BT_ERR("%s: Failed to send firmware public key (%d)",
2531                        hdev->name, err);
2532                 goto done;
2533         }
2534
2535         /* Send the 256 bytes of signature information from the firmware
2536          * as the Sign fragment.
2537          */
2538         err = btusb_intel_secure_send(hdev, 0x02, 256, fw->data + 388);
2539         if (err < 0) {
2540                 BT_ERR("%s: Failed to send firmware signature (%d)",
2541                        hdev->name, err);
2542                 goto done;
2543         }
2544
2545         fw_ptr = fw->data + 644;
2546         frag_len = 0;
2547
2548         while (fw_ptr - fw->data < fw->size) {
2549                 struct hci_command_hdr *cmd = (void *)(fw_ptr + frag_len);
2550
2551                 frag_len += sizeof(*cmd) + cmd->plen;
2552
2553                 /* The paramter length of the secure send command requires
2554                  * a 4 byte alignment. It happens so that the firmware file
2555                  * contains proper Intel_NOP commands to align the fragments
2556                  * as needed.
2557                  *
2558                  * Send set of commands with 4 byte alignment from the
2559                  * firmware data buffer as a single Data fragement.
2560                  */
2561                 if (!(frag_len % 4)) {
2562                         err = btusb_intel_secure_send(hdev, 0x01, frag_len,
2563                                                       fw_ptr);
2564                         if (err < 0) {
2565                                 BT_ERR("%s: Failed to send firmware data (%d)",
2566                                        hdev->name, err);
2567                                 goto done;
2568                         }
2569
2570                         fw_ptr += frag_len;
2571                         frag_len = 0;
2572                 }
2573         }
2574
2575         set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2576
2577         BT_INFO("%s: Waiting for firmware download to complete", hdev->name);
2578
2579         /* Before switching the device into operational mode and with that
2580          * booting the loaded firmware, wait for the bootloader notification
2581          * that all fragments have been successfully received.
2582          *
2583          * When the event processing receives the notification, then the
2584          * BTUSB_DOWNLOADING flag will be cleared.
2585          *
2586          * The firmware loading should not take longer than 5 seconds
2587          * and thus just timeout if that happens and fail the setup
2588          * of this device.
2589          */
2590         err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
2591                                   TASK_INTERRUPTIBLE,
2592                                   msecs_to_jiffies(5000));
2593         if (err == 1) {
2594                 BT_ERR("%s: Firmware loading interrupted", hdev->name);
2595                 err = -EINTR;
2596                 goto done;
2597         }
2598
2599         if (err) {
2600                 BT_ERR("%s: Firmware loading timeout", hdev->name);
2601                 err = -ETIMEDOUT;
2602                 goto done;
2603         }
2604
2605         if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) {
2606                 BT_ERR("%s: Firmware loading failed", hdev->name);
2607                 err = -ENOEXEC;
2608                 goto done;
2609         }
2610
2611         rettime = ktime_get();
2612         delta = ktime_sub(rettime, calltime);
2613         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2614
2615         BT_INFO("%s: Firmware loaded in %llu usecs", hdev->name, duration);
2616
2617 done:
2618         release_firmware(fw);
2619
2620         if (err < 0)
2621                 return err;
2622
2623         calltime = ktime_get();
2624
2625         set_bit(BTUSB_BOOTING, &data->flags);
2626
2627         skb = __hci_cmd_sync(hdev, 0xfc01, sizeof(reset_param), reset_param,
2628                              HCI_INIT_TIMEOUT);
2629         if (IS_ERR(skb))
2630                 return PTR_ERR(skb);
2631
2632         kfree_skb(skb);
2633
2634         /* The bootloader will not indicate when the device is ready. This
2635          * is done by the operational firmware sending bootup notification.
2636          *
2637          * Booting into operational firmware should not take longer than
2638          * 1 second. However if that happens, then just fail the setup
2639          * since something went wrong.
2640          */
2641         BT_INFO("%s: Waiting for device to boot", hdev->name);
2642
2643         err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING,
2644                                   TASK_INTERRUPTIBLE,
2645                                   msecs_to_jiffies(1000));
2646
2647         if (err == 1) {
2648                 BT_ERR("%s: Device boot interrupted", hdev->name);
2649                 return -EINTR;
2650         }
2651
2652         if (err) {
2653                 BT_ERR("%s: Device boot timeout", hdev->name);
2654                 return -ETIMEDOUT;
2655         }
2656
2657         rettime = ktime_get();
2658         delta = ktime_sub(rettime, calltime);
2659         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2660
2661         BT_INFO("%s: Device booted in %llu usecs", hdev->name, duration);
2662
2663         clear_bit(BTUSB_BOOTLOADER, &data->flags);
2664
2665         return 0;
2666 }
2667
2668 static void btusb_hw_error_intel(struct hci_dev *hdev, u8 code)
2669 {
2670         struct sk_buff *skb;
2671         u8 type = 0x00;
2672
2673         BT_ERR("%s: Hardware error 0x%2.2x", hdev->name, code);
2674
2675         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2676         if (IS_ERR(skb)) {
2677                 BT_ERR("%s: Reset after hardware error failed (%ld)",
2678                        hdev->name, PTR_ERR(skb));
2679                 return;
2680         }
2681         kfree_skb(skb);
2682
2683         skb = __hci_cmd_sync(hdev, 0xfc22, 1, &type, HCI_INIT_TIMEOUT);
2684         if (IS_ERR(skb)) {
2685                 BT_ERR("%s: Retrieving Intel exception info failed (%ld)",
2686                        hdev->name, PTR_ERR(skb));
2687                 return;
2688         }
2689
2690         if (skb->len != 13) {
2691                 BT_ERR("%s: Exception info size mismatch", hdev->name);
2692                 kfree_skb(skb);
2693                 return;
2694         }
2695
2696         if (skb->data[0] != 0x00) {
2697                 BT_ERR("%s: Exception info command failure (%02x)",
2698                        hdev->name, skb->data[0]);
2699                 kfree_skb(skb);
2700                 return;
2701         }
2702
2703         BT_ERR("%s: Exception info %s", hdev->name, (char *)(skb->data + 1));
2704
2705         kfree_skb(skb);
2706 }
2707
2708 static int btusb_shutdown_intel(struct hci_dev *hdev)
2709 {
2710         struct sk_buff *skb;
2711         long ret;
2712
2713         /* Some platforms have an issue with BT LED when the interface is
2714          * down or BT radio is turned off, which takes 5 seconds to BT LED
2715          * goes off. This command turns off the BT LED immediately.
2716          */
2717         skb = __hci_cmd_sync(hdev, 0xfc3f, 0, NULL, HCI_INIT_TIMEOUT);
2718         if (IS_ERR(skb)) {
2719                 ret = PTR_ERR(skb);
2720                 BT_ERR("%s: turning off Intel device LED failed (%ld)",
2721                        hdev->name, ret);
2722                 return ret;
2723         }
2724         kfree_skb(skb);
2725
2726         return 0;
2727 }
2728
2729 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
2730                                     const bdaddr_t *bdaddr)
2731 {
2732         struct sk_buff *skb;
2733         u8 buf[8];
2734         long ret;
2735
2736         buf[0] = 0xfe;
2737         buf[1] = sizeof(bdaddr_t);
2738         memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
2739
2740         skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2741         if (IS_ERR(skb)) {
2742                 ret = PTR_ERR(skb);
2743                 BT_ERR("%s: changing Marvell device address failed (%ld)",
2744                        hdev->name, ret);
2745                 return ret;
2746         }
2747         kfree_skb(skb);
2748
2749         return 0;
2750 }
2751
2752 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
2753                                     const bdaddr_t *bdaddr)
2754 {
2755         struct sk_buff *skb;
2756         u8 buf[10];
2757         long ret;
2758
2759         buf[0] = 0x01;
2760         buf[1] = 0x01;
2761         buf[2] = 0x00;
2762         buf[3] = sizeof(bdaddr_t);
2763         memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
2764
2765         skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2766         if (IS_ERR(skb)) {
2767                 ret = PTR_ERR(skb);
2768                 BT_ERR("%s: Change address command failed (%ld)",
2769                        hdev->name, ret);
2770                 return ret;
2771         }
2772         kfree_skb(skb);
2773
2774         return 0;
2775 }
2776
2777 #define QCA_DFU_PACKET_LEN      4096
2778
2779 #define QCA_GET_TARGET_VERSION  0x09
2780 #define QCA_CHECK_STATUS        0x05
2781 #define QCA_DFU_DOWNLOAD        0x01
2782
2783 #define QCA_SYSCFG_UPDATED      0x40
2784 #define QCA_PATCH_UPDATED       0x80
2785 #define QCA_DFU_TIMEOUT         3000
2786
2787 struct qca_version {
2788         __le32  rom_version;
2789         __le32  patch_version;
2790         __le32  ram_version;
2791         __le32  ref_clock;
2792         __u8    reserved[4];
2793 } __packed;
2794
2795 struct qca_rampatch_version {
2796         __le16  rom_version;
2797         __le16  patch_version;
2798 } __packed;
2799
2800 struct qca_device_info {
2801         u32     rom_version;
2802         u8      rampatch_hdr;   /* length of header in rampatch */
2803         u8      nvm_hdr;        /* length of header in NVM */
2804         u8      ver_offset;     /* offset of version structure in rampatch */
2805 };
2806
2807 static const struct qca_device_info qca_devices_table[] = {
2808         { 0x00000100, 20, 4, 10 }, /* Rome 1.0 */
2809         { 0x00000101, 20, 4, 10 }, /* Rome 1.1 */
2810         { 0x00000201, 28, 4, 18 }, /* Rome 2.1 */
2811         { 0x00000300, 28, 4, 18 }, /* Rome 3.0 */
2812         { 0x00000302, 28, 4, 18 }, /* Rome 3.2 */
2813 };
2814
2815 static int btusb_qca_send_vendor_req(struct hci_dev *hdev, u8 request,
2816                                      void *data, u16 size)
2817 {
2818         struct btusb_data *btdata = hci_get_drvdata(hdev);
2819         struct usb_device *udev = btdata->udev;
2820         int pipe, err;
2821         u8 *buf;
2822
2823         buf = kmalloc(size, GFP_KERNEL);
2824         if (!buf)
2825                 return -ENOMEM;
2826
2827         /* Found some of USB hosts have IOT issues with ours so that we should
2828          * not wait until HCI layer is ready.
2829          */
2830         pipe = usb_rcvctrlpipe(udev, 0);
2831         err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
2832                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2833         if (err < 0) {
2834                 BT_ERR("%s: Failed to access otp area (%d)", hdev->name, err);
2835                 goto done;
2836         }
2837
2838         memcpy(data, buf, size);
2839
2840 done:
2841         kfree(buf);
2842
2843         return err;
2844 }
2845
2846 static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
2847                                        const struct firmware *firmware,
2848                                        size_t hdr_size)
2849 {
2850         struct btusb_data *btdata = hci_get_drvdata(hdev);
2851         struct usb_device *udev = btdata->udev;
2852         size_t count, size, sent = 0;
2853         int pipe, len, err;
2854         u8 *buf;
2855
2856         buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
2857         if (!buf)
2858                 return -ENOMEM;
2859
2860         count = firmware->size;
2861
2862         size = min_t(size_t, count, hdr_size);
2863         memcpy(buf, firmware->data, size);
2864
2865         /* USB patches should go down to controller through USB path
2866          * because binary format fits to go down through USB channel.
2867          * USB control path is for patching headers and USB bulk is for
2868          * patch body.
2869          */
2870         pipe = usb_sndctrlpipe(udev, 0);
2871         err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
2872                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2873         if (err < 0) {
2874                 BT_ERR("%s: Failed to send headers (%d)", hdev->name, err);
2875                 goto done;
2876         }
2877
2878         sent += size;
2879         count -= size;
2880
2881         while (count) {
2882                 size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
2883
2884                 memcpy(buf, firmware->data + sent, size);
2885
2886                 pipe = usb_sndbulkpipe(udev, 0x02);
2887                 err = usb_bulk_msg(udev, pipe, buf, size, &len,
2888                                    QCA_DFU_TIMEOUT);
2889                 if (err < 0) {
2890                         BT_ERR("%s: Failed to send body at %zd of %zd (%d)",
2891                                hdev->name, sent, firmware->size, err);
2892                         break;
2893                 }
2894
2895                 if (size != len) {
2896                         BT_ERR("%s: Failed to get bulk buffer", hdev->name);
2897                         err = -EILSEQ;
2898                         break;
2899                 }
2900
2901                 sent  += size;
2902                 count -= size;
2903         }
2904
2905 done:
2906         kfree(buf);
2907         return err;
2908 }
2909
2910 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
2911                                          struct qca_version *ver,
2912                                          const struct qca_device_info *info)
2913 {
2914         struct qca_rampatch_version *rver;
2915         const struct firmware *fw;
2916         u32 ver_rom, ver_patch;
2917         u16 rver_rom, rver_patch;
2918         char fwname[64];
2919         int err;
2920
2921         ver_rom = le32_to_cpu(ver->rom_version);
2922         ver_patch = le32_to_cpu(ver->patch_version);
2923
2924         snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom);
2925
2926         err = request_firmware(&fw, fwname, &hdev->dev);
2927         if (err) {
2928                 BT_ERR("%s: failed to request rampatch file: %s (%d)",
2929                        hdev->name, fwname, err);
2930                 return err;
2931         }
2932
2933         BT_INFO("%s: using rampatch file: %s", hdev->name, fwname);
2934
2935         rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
2936         rver_rom = le16_to_cpu(rver->rom_version);
2937         rver_patch = le16_to_cpu(rver->patch_version);
2938
2939         BT_INFO("%s: QCA: patch rome 0x%x build 0x%x, firmware rome 0x%x "
2940                 "build 0x%x", hdev->name, rver_rom, rver_patch, ver_rom,
2941                 ver_patch);
2942
2943         if (rver_rom != ver_rom || rver_patch <= ver_patch) {
2944                 BT_ERR("%s: rampatch file version did not match with firmware",
2945                        hdev->name);
2946                 err = -EINVAL;
2947                 goto done;
2948         }
2949
2950         err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
2951
2952 done:
2953         release_firmware(fw);
2954
2955         return err;
2956 }
2957
2958 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
2959                                     struct qca_version *ver,
2960                                     const struct qca_device_info *info)
2961 {
2962         const struct firmware *fw;
2963         char fwname[64];
2964         int err;
2965
2966         snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x.bin",
2967                  le32_to_cpu(ver->rom_version));
2968
2969         err = request_firmware(&fw, fwname, &hdev->dev);
2970         if (err) {
2971                 BT_ERR("%s: failed to request NVM file: %s (%d)",
2972                        hdev->name, fwname, err);
2973                 return err;
2974         }
2975
2976         BT_INFO("%s: using NVM file: %s", hdev->name, fwname);
2977
2978         err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
2979
2980         release_firmware(fw);
2981
2982         return err;
2983 }
2984
2985 static int btusb_setup_qca(struct hci_dev *hdev)
2986 {
2987         const struct qca_device_info *info = NULL;
2988         struct qca_version ver;
2989         u32 ver_rom;
2990         u8 status;
2991         int i, err;
2992
2993         err = btusb_qca_send_vendor_req(hdev, QCA_GET_TARGET_VERSION, &ver,
2994                                         sizeof(ver));
2995         if (err < 0)
2996                 return err;
2997
2998         ver_rom = le32_to_cpu(ver.rom_version);
2999         for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
3000                 if (ver_rom == qca_devices_table[i].rom_version)
3001                         info = &qca_devices_table[i];
3002         }
3003         if (!info) {
3004                 BT_ERR("%s: don't support firmware rome 0x%x", hdev->name,
3005                        ver_rom);
3006                 return -ENODEV;
3007         }
3008
3009         err = btusb_qca_send_vendor_req(hdev, QCA_CHECK_STATUS, &status,
3010                                         sizeof(status));
3011         if (err < 0)
3012                 return err;
3013
3014         if (!(status & QCA_PATCH_UPDATED)) {
3015                 err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
3016                 if (err < 0)
3017                         return err;
3018         }
3019
3020         if (!(status & QCA_SYSCFG_UPDATED)) {
3021                 err = btusb_setup_qca_load_nvm(hdev, &ver, info);
3022                 if (err < 0)
3023                         return err;
3024         }
3025
3026         return 0;
3027 }
3028
3029 static int btusb_probe(struct usb_interface *intf,
3030                        const struct usb_device_id *id)
3031 {
3032         struct usb_endpoint_descriptor *ep_desc;
3033         struct btusb_data *data;
3034         struct hci_dev *hdev;
3035         int i, err;
3036
3037         BT_DBG("intf %p id %p", intf, id);
3038
3039         /* interface numbers are hardcoded in the spec */
3040         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
3041                 return -ENODEV;
3042
3043         if (!id->driver_info) {
3044                 const struct usb_device_id *match;
3045
3046                 match = usb_match_id(intf, blacklist_table);
3047                 if (match)
3048                         id = match;
3049         }
3050
3051         if (id->driver_info == BTUSB_IGNORE)
3052                 return -ENODEV;
3053
3054         if (id->driver_info & BTUSB_ATH3012) {
3055                 struct usb_device *udev = interface_to_usbdev(intf);
3056
3057                 /* Old firmware would otherwise let ath3k driver load
3058                  * patch and sysconfig files */
3059                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
3060                         return -ENODEV;
3061         }
3062
3063         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
3064         if (!data)
3065                 return -ENOMEM;
3066
3067         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
3068                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
3069
3070                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
3071                         data->intr_ep = ep_desc;
3072                         continue;
3073                 }
3074
3075                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
3076                         data->bulk_tx_ep = ep_desc;
3077                         continue;
3078                 }
3079
3080                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
3081                         data->bulk_rx_ep = ep_desc;
3082                         continue;
3083                 }
3084         }
3085
3086         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
3087                 return -ENODEV;
3088
3089         if (id->driver_info & BTUSB_AMP) {
3090                 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
3091                 data->cmdreq = 0x2b;
3092         } else {
3093                 data->cmdreq_type = USB_TYPE_CLASS;
3094                 data->cmdreq = 0x00;
3095         }
3096
3097         data->udev = interface_to_usbdev(intf);
3098         data->intf = intf;
3099
3100         INIT_WORK(&data->work, btusb_work);
3101         INIT_WORK(&data->waker, btusb_waker);
3102         init_usb_anchor(&data->deferred);
3103         init_usb_anchor(&data->tx_anchor);
3104         spin_lock_init(&data->txlock);
3105
3106         init_usb_anchor(&data->intr_anchor);
3107         init_usb_anchor(&data->bulk_anchor);
3108         init_usb_anchor(&data->isoc_anchor);
3109         spin_lock_init(&data->rxlock);
3110
3111         if (id->driver_info & BTUSB_INTEL_NEW) {
3112                 data->recv_event = btusb_recv_event_intel;
3113                 data->recv_bulk = btusb_recv_bulk_intel;
3114                 set_bit(BTUSB_BOOTLOADER, &data->flags);
3115         } else {
3116                 data->recv_event = hci_recv_frame;
3117                 data->recv_bulk = btusb_recv_bulk;
3118         }
3119
3120         hdev = hci_alloc_dev();
3121         if (!hdev)
3122                 return -ENOMEM;
3123
3124         hdev->bus = HCI_USB;
3125         hci_set_drvdata(hdev, data);
3126
3127         if (id->driver_info & BTUSB_AMP)
3128                 hdev->dev_type = HCI_AMP;
3129         else
3130                 hdev->dev_type = HCI_BREDR;
3131
3132         data->hdev = hdev;
3133
3134         SET_HCIDEV_DEV(hdev, &intf->dev);
3135
3136         hdev->open   = btusb_open;
3137         hdev->close  = btusb_close;
3138         hdev->flush  = btusb_flush;
3139         hdev->send   = btusb_send_frame;
3140         hdev->notify = btusb_notify;
3141
3142         if (id->driver_info & BTUSB_BCM92035)
3143                 hdev->setup = btusb_setup_bcm92035;
3144
3145 #ifdef CONFIG_BT_HCIBTUSB_BCM
3146         if (id->driver_info & BTUSB_BCM_PATCHRAM) {
3147                 hdev->setup = btbcm_setup_patchram;
3148                 hdev->set_bdaddr = btbcm_set_bdaddr;
3149         }
3150
3151         if (id->driver_info & BTUSB_BCM_APPLE)
3152                 hdev->setup = btbcm_setup_apple;
3153 #endif
3154
3155         if (id->driver_info & BTUSB_INTEL) {
3156                 hdev->setup = btusb_setup_intel;
3157                 hdev->shutdown = btusb_shutdown_intel;
3158                 hdev->set_bdaddr = btintel_set_bdaddr;
3159                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3160                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3161         }
3162
3163         if (id->driver_info & BTUSB_INTEL_NEW) {
3164                 hdev->send = btusb_send_frame_intel;
3165                 hdev->setup = btusb_setup_intel_new;
3166                 hdev->hw_error = btusb_hw_error_intel;
3167                 hdev->set_bdaddr = btintel_set_bdaddr;
3168                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3169         }
3170
3171         if (id->driver_info & BTUSB_MARVELL)
3172                 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
3173
3174         if (id->driver_info & BTUSB_SWAVE) {
3175                 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
3176                 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
3177         }
3178
3179         if (id->driver_info & BTUSB_INTEL_BOOT)
3180                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3181
3182         if (id->driver_info & BTUSB_ATH3012) {
3183                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
3184                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3185                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3186         }
3187
3188         if (id->driver_info & BTUSB_QCA_ROME) {
3189                 data->setup_on_usb = btusb_setup_qca;
3190                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
3191         }
3192
3193         if (id->driver_info & BTUSB_REALTEK)
3194                 hdev->setup = btusb_setup_realtek;
3195
3196         if (id->driver_info & BTUSB_AMP) {
3197                 /* AMP controllers do not support SCO packets */
3198                 data->isoc = NULL;
3199         } else {
3200                 /* Interface numbers are hardcoded in the specification */
3201                 data->isoc = usb_ifnum_to_if(data->udev, 1);
3202         }
3203
3204         if (!reset)
3205                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3206
3207         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
3208                 if (!disable_scofix)
3209                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
3210         }
3211
3212         if (id->driver_info & BTUSB_BROKEN_ISOC)
3213                 data->isoc = NULL;
3214
3215         if (id->driver_info & BTUSB_DIGIANSWER) {
3216                 data->cmdreq_type = USB_TYPE_VENDOR;
3217                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3218         }
3219
3220         if (id->driver_info & BTUSB_CSR) {
3221                 struct usb_device *udev = data->udev;
3222                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
3223
3224                 /* Old firmware would otherwise execute USB reset */
3225                 if (bcdDevice < 0x117)
3226                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3227
3228                 /* Fake CSR devices with broken commands */
3229                 if (bcdDevice <= 0x100)
3230                         hdev->setup = btusb_setup_csr;
3231
3232                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3233         }
3234
3235         if (id->driver_info & BTUSB_SNIFFER) {
3236                 struct usb_device *udev = data->udev;
3237
3238                 /* New sniffer firmware has crippled HCI interface */
3239                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
3240                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3241         }
3242
3243         if (id->driver_info & BTUSB_INTEL_BOOT) {
3244                 /* A bug in the bootloader causes that interrupt interface is
3245                  * only enabled after receiving SetInterface(0, AltSetting=0).
3246                  */
3247                 err = usb_set_interface(data->udev, 0, 0);
3248                 if (err < 0) {
3249                         BT_ERR("failed to set interface 0, alt 0 %d", err);
3250                         hci_free_dev(hdev);
3251                         return err;
3252                 }
3253         }
3254
3255         if (data->isoc) {
3256                 err = usb_driver_claim_interface(&btusb_driver,
3257                                                  data->isoc, data);
3258                 if (err < 0) {
3259                         hci_free_dev(hdev);
3260                         return err;
3261                 }
3262         }
3263
3264         err = hci_register_dev(hdev);
3265         if (err < 0) {
3266                 hci_free_dev(hdev);
3267                 return err;
3268         }
3269
3270         usb_set_intfdata(intf, data);
3271
3272         return 0;
3273 }
3274
3275 static void btusb_disconnect(struct usb_interface *intf)
3276 {
3277         struct btusb_data *data = usb_get_intfdata(intf);
3278         struct hci_dev *hdev;
3279
3280         BT_DBG("intf %p", intf);
3281
3282         if (!data)
3283                 return;
3284
3285         hdev = data->hdev;
3286         usb_set_intfdata(data->intf, NULL);
3287
3288         if (data->isoc)
3289                 usb_set_intfdata(data->isoc, NULL);
3290
3291         hci_unregister_dev(hdev);
3292
3293         if (intf == data->isoc)
3294                 usb_driver_release_interface(&btusb_driver, data->intf);
3295         else if (data->isoc)
3296                 usb_driver_release_interface(&btusb_driver, data->isoc);
3297
3298         hci_free_dev(hdev);
3299 }
3300
3301 #ifdef CONFIG_PM
3302 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
3303 {
3304         struct btusb_data *data = usb_get_intfdata(intf);
3305
3306         BT_DBG("intf %p", intf);
3307
3308         if (data->suspend_count++)
3309                 return 0;
3310
3311         spin_lock_irq(&data->txlock);
3312         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
3313                 set_bit(BTUSB_SUSPENDING, &data->flags);
3314                 spin_unlock_irq(&data->txlock);
3315         } else {
3316                 spin_unlock_irq(&data->txlock);
3317                 data->suspend_count--;
3318                 return -EBUSY;
3319         }
3320
3321         cancel_work_sync(&data->work);
3322
3323         btusb_stop_traffic(data);
3324         usb_kill_anchored_urbs(&data->tx_anchor);
3325
3326         return 0;
3327 }
3328
3329 static void play_deferred(struct btusb_data *data)
3330 {
3331         struct urb *urb;
3332         int err;
3333
3334         while ((urb = usb_get_from_anchor(&data->deferred))) {
3335                 err = usb_submit_urb(urb, GFP_ATOMIC);
3336                 if (err < 0)
3337                         break;
3338
3339                 data->tx_in_flight++;
3340         }
3341         usb_scuttle_anchored_urbs(&data->deferred);
3342 }
3343
3344 static int btusb_resume(struct usb_interface *intf)
3345 {
3346         struct btusb_data *data = usb_get_intfdata(intf);
3347         struct hci_dev *hdev = data->hdev;
3348         int err = 0;
3349
3350         BT_DBG("intf %p", intf);
3351
3352         if (--data->suspend_count)
3353                 return 0;
3354
3355         if (!test_bit(HCI_RUNNING, &hdev->flags))
3356                 goto done;
3357
3358         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
3359                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
3360                 if (err < 0) {
3361                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
3362                         goto failed;
3363                 }
3364         }
3365
3366         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
3367                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
3368                 if (err < 0) {
3369                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
3370                         goto failed;
3371                 }
3372
3373                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
3374         }
3375
3376         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
3377                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
3378                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
3379                 else
3380                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
3381         }
3382
3383         spin_lock_irq(&data->txlock);
3384         play_deferred(data);
3385         clear_bit(BTUSB_SUSPENDING, &data->flags);
3386         spin_unlock_irq(&data->txlock);
3387         schedule_work(&data->work);
3388
3389         return 0;
3390
3391 failed:
3392         usb_scuttle_anchored_urbs(&data->deferred);
3393 done:
3394         spin_lock_irq(&data->txlock);
3395         clear_bit(BTUSB_SUSPENDING, &data->flags);
3396         spin_unlock_irq(&data->txlock);
3397
3398         return err;
3399 }
3400 #endif
3401
3402 static struct usb_driver btusb_driver = {
3403         .name           = "btusb",
3404         .probe          = btusb_probe,
3405         .disconnect     = btusb_disconnect,
3406 #ifdef CONFIG_PM
3407         .suspend        = btusb_suspend,
3408         .resume         = btusb_resume,
3409 #endif
3410         .id_table       = btusb_table,
3411         .supports_autosuspend = 1,
3412         .disable_hub_initiated_lpm = 1,
3413 };
3414
3415 module_usb_driver(btusb_driver);
3416
3417 module_param(disable_scofix, bool, 0644);
3418 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
3419
3420 module_param(force_scofix, bool, 0644);
3421 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
3422
3423 module_param(reset, bool, 0644);
3424 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
3425
3426 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
3427 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
3428 MODULE_VERSION(VERSION);
3429 MODULE_LICENSE("GPL");