drivers/bluetooth/btusb.c

   1 /*
   2  *
   3  *  Generic Bluetooth USB driver
   4  *
   5  *  Copyright (C) 2005-2008  Marcel Holtmann <[email protected]>
   6  *
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, write to the Free Software
  20  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  *
  22  */
  23
  24 #include <linux/module.h>
  25 #include <linux/usb.h>
  26 #include <linux/firmware.h>
  27
  28 #include <net/bluetooth/bluetooth.h>
  29 #include <net/bluetooth/hci_core.h>
  30
  31 #define VERSION "0.7"
  32
  33 static bool disable_scofix;
  34 static bool force_scofix;
  35
  36 static bool reset = 1;
  37
  38 static struct usb_driver btusb_driver;
  39
  40 #define BTUSB_IGNORE            0x01
  41 #define BTUSB_DIGIANSWER        0x02
  42 #define BTUSB_CSR               0x04
  43 #define BTUSB_SNIFFER           0x08
  44 #define BTUSB_BCM92035          0x10
  45 #define BTUSB_BROKEN_ISOC       0x20
  46 #define BTUSB_WRONG_SCO_MTU     0x40
  47 #define BTUSB_ATH3012           0x80
  48 #define BTUSB_INTEL             0x100
  49 #define BTUSB_INTEL_BOOT        0x200
  50 #define BTUSB_BCM_PATCHRAM      0x400
  51 #define BTUSB_MARVELL           0x800
  52 #define BTUSB_SWAVE             0x1000
  53 #define BTUSB_INTEL_NEW         0x2000
  54 #define BTUSB_AMP               0x4000
  55 #define BTUSB_QCA_ROME          0x8000
  56
  57 static const struct usb_device_id btusb_table[] = {
  58         /* Generic Bluetooth USB device */
  59         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  60
  61         /* Generic Bluetooth AMP device */
  62         { USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP },
  63
  64         /* Apple-specific (Broadcom) devices */
  65         { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01) },
  66
  67         /* MediaTek MT76x0E */
  68         { USB_DEVICE(0x0e8d, 0x763f) },
  69
  70         /* Broadcom SoftSailing reporting vendor specific */
  71         { USB_DEVICE(0x0a5c, 0x21e1) },
  72
  73         /* Apple MacBookPro 7,1 */
  74         { USB_DEVICE(0x05ac, 0x8213) },
  75
  76         /* Apple iMac11,1 */
  77         { USB_DEVICE(0x05ac, 0x8215) },
  78
  79         /* Apple MacBookPro6,2 */
  80         { USB_DEVICE(0x05ac, 0x8218) },
  81
  82         /* Apple MacBookAir3,1, MacBookAir3,2 */
  83         { USB_DEVICE(0x05ac, 0x821b) },
  84
  85         /* Apple MacBookAir4,1 */
  86         { USB_DEVICE(0x05ac, 0x821f) },
  87
  88         /* Apple MacBookPro8,2 */
  89         { USB_DEVICE(0x05ac, 0x821a) },
  90
  91         /* Apple MacMini5,1 */
  92         { USB_DEVICE(0x05ac, 0x8281) },
  93
  94         /* AVM BlueFRITZ! USB v2.0 */
  95         { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE },
  96
  97         /* Bluetooth Ultraport Module from IBM */
  98         { USB_DEVICE(0x04bf, 0x030a) },
  99
 100         /* ALPS Modules with non-standard id */
 101         { USB_DEVICE(0x044e, 0x3001) },
 102         { USB_DEVICE(0x044e, 0x3002) },
 103
 104         /* Ericsson with non-standard id */
 105         { USB_DEVICE(0x0bdb, 0x1002) },
 106
 107         /* Canyon CN-BTU1 with HID interfaces */
 108         { USB_DEVICE(0x0c10, 0x0000) },
 109
 110         /* Broadcom BCM20702A0 */
 111         { USB_DEVICE(0x0489, 0xe042) },
 112         { USB_DEVICE(0x04ca, 0x2003) },
 113         { USB_DEVICE(0x0b05, 0x17b5) },
 114         { USB_DEVICE(0x0b05, 0x17cb) },
 115         { USB_DEVICE(0x413c, 0x8197) },
 116         { USB_DEVICE(0x13d3, 0x3404),
 117           .driver_info = BTUSB_BCM_PATCHRAM },
 118
 119         /* Broadcom BCM20702B0 (Dynex/Insignia) */
 120         { USB_DEVICE(0x19ff, 0x0239), .driver_info = BTUSB_BCM_PATCHRAM },
 121
 122         /* Foxconn - Hon Hai */
 123         { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01),
 124           .driver_info = BTUSB_BCM_PATCHRAM },
 125
 126         /* Lite-On Technology - Broadcom based */
 127         { USB_VENDOR_AND_INTERFACE_INFO(0x04ca, 0xff, 0x01, 0x01),
 128           .driver_info = BTUSB_BCM_PATCHRAM },
 129
 130         /* Broadcom devices with vendor specific id */
 131         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
 132           .driver_info = BTUSB_BCM_PATCHRAM },
 133
 134         /* ASUSTek Computer - Broadcom based */
 135         { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01),
 136           .driver_info = BTUSB_BCM_PATCHRAM },
 137
 138         /* Belkin F8065bf - Broadcom based */
 139         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01) },
 140
 141         /* IMC Networks - Broadcom based */
 142         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01) },
 143
 144         /* Intel Bluetooth USB Bootloader (RAM module) */
 145         { USB_DEVICE(0x8087, 0x0a5a),
 146           .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
 147
 148         { }     /* Terminating entry */
 149 };
 150
 151 MODULE_DEVICE_TABLE(usb, btusb_table);
 152
 153 static const struct usb_device_id blacklist_table[] = {
 154         /* CSR BlueCore devices */
 155         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 156
 157         /* Broadcom BCM2033 without firmware */
 158         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 159
 160         /* Atheros 3011 with sflash firmware */
 161         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 162         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 163         { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE },
 164         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 165         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 166         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 167         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 168
 169         /* Atheros AR9285 Malbec with sflash firmware */
 170         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 171
 172         /* Atheros 3012 with sflash firmware */
 173         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 174         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 175         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 176         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 177         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 178         { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
 179         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 180         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 181         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 182         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 183         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 184         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 185         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 186         { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
 187         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 188         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 189         { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
 190         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 191         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 192         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 193         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 194         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 195         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
 196         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 197         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 198         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 199         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 200         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 201         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 202         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 203         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 204         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 205         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 206         { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
 207         { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
 208         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
 209
 210         /* Atheros AR5BBU12 with sflash firmware */
 211         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 212
 213         /* Atheros AR5BBU12 with sflash firmware */
 214         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 215         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 216
 217         /* QCA ROME chipset */
 218         { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME},
 219         { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME},
 220
 221         /* Broadcom BCM2035 */
 222         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 223         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 224         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 225
 226         /* Broadcom BCM2045 */
 227         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 228         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 229
 230         /* IBM/Lenovo ThinkPad with Broadcom chip */
 231         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 232         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 233
 234         /* HP laptop with Broadcom chip */
 235         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 236
 237         /* Dell laptop with Broadcom chip */
 238         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 239
 240         /* Dell Wireless 370 and 410 devices */
 241         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 242         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 243
 244         /* Belkin F8T012 and F8T013 devices */
 245         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 246         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 247
 248         /* Asus WL-BTD202 device */
 249         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 250
 251         /* Kensington Bluetooth USB adapter */
 252         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 253
 254         /* RTX Telecom based adapters with buggy SCO support */
 255         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 256         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 257
 258         /* CONWISE Technology based adapters with buggy SCO support */
 259         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 260
 261         /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
 262         { USB_DEVICE(0x1300, 0x0001), .driver_info = BTUSB_SWAVE },
 263
 264         /* Digianswer devices */
 265         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 266         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 267
 268         /* CSR BlueCore Bluetooth Sniffer */
 269         { USB_DEVICE(0x0a12, 0x0002),
 270           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 271
 272         /* Frontline ComProbe Bluetooth Sniffer */
 273         { USB_DEVICE(0x16d3, 0x0002),
 274           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 275
 276         /* Marvell Bluetooth devices */
 277         { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
 278         { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
 279
 280         /* Intel Bluetooth devices */
 281         { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR },
 282         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 283         { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
 284         { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_NEW },
 285
 286         /* Other Intel Bluetooth devices */
 287         { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01),
 288           .driver_info = BTUSB_IGNORE },
 289
 290         { }     /* Terminating entry */
 291 };
 292
 293 #define BTUSB_MAX_ISOC_FRAMES   10
 294
 295 #define BTUSB_INTR_RUNNING      0
 296 #define BTUSB_BULK_RUNNING      1
 297 #define BTUSB_ISOC_RUNNING      2
 298 #define BTUSB_SUSPENDING        3
 299 #define BTUSB_DID_ISO_RESUME    4
 300 #define BTUSB_BOOTLOADER        5
 301 #define BTUSB_DOWNLOADING       6
 302 #define BTUSB_FIRMWARE_LOADED   7
 303 #define BTUSB_FIRMWARE_FAILED   8
 304 #define BTUSB_BOOTING           9
 305
 306 struct btusb_data {
 307         struct hci_dev       *hdev;
 308         struct usb_device    *udev;
 309         struct usb_interface *intf;
 310         struct usb_interface *isoc;
 311
 312         unsigned long flags;
 313
 314         struct work_struct work;
 315         struct work_struct waker;
 316
 317         struct usb_anchor deferred;
 318         struct usb_anchor tx_anchor;
 319         int tx_in_flight;
 320         spinlock_t txlock;
 321
 322         struct usb_anchor intr_anchor;
 323         struct usb_anchor bulk_anchor;
 324         struct usb_anchor isoc_anchor;
 325         spinlock_t rxlock;
 326
 327         struct sk_buff *evt_skb;
 328         struct sk_buff *acl_skb;
 329         struct sk_buff *sco_skb;
 330
 331         struct usb_endpoint_descriptor *intr_ep;
 332         struct usb_endpoint_descriptor *bulk_tx_ep;
 333         struct usb_endpoint_descriptor *bulk_rx_ep;
 334         struct usb_endpoint_descriptor *isoc_tx_ep;
 335         struct usb_endpoint_descriptor *isoc_rx_ep;
 336
 337         __u8 cmdreq_type;
 338         __u8 cmdreq;
 339
 340         unsigned int sco_num;
 341         int isoc_altsetting;
 342         int suspend_count;
 343
 344         int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
 345         int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
 346
 347         int (*setup_on_usb)(struct hci_dev *hdev);
 348 };
 349
 350 static inline void btusb_free_frags(struct btusb_data *data)
 351 {
 352         unsigned long flags;
 353
 354         spin_lock_irqsave(&data->rxlock, flags);
 355
 356         kfree_skb(data->evt_skb);
 357         data->evt_skb = NULL;
 358
 359         kfree_skb(data->acl_skb);
 360         data->acl_skb = NULL;
 361
 362         kfree_skb(data->sco_skb);
 363         data->sco_skb = NULL;
 364
 365         spin_unlock_irqrestore(&data->rxlock, flags);
 366 }
 367
 368 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
 369 {
 370         struct sk_buff *skb;
 371         int err = 0;
 372
 373         spin_lock(&data->rxlock);
 374         skb = data->evt_skb;
 375
 376         while (count) {
 377                 int len;
 378
 379                 if (!skb) {
 380                         skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
 381                         if (!skb) {
 382                                 err = -ENOMEM;
 383                                 break;
 384                         }
 385
 386                         bt_cb(skb)->pkt_type = HCI_EVENT_PKT;
 387                         bt_cb(skb)->expect = HCI_EVENT_HDR_SIZE;
 388                 }
 389
 390                 len = min_t(uint, bt_cb(skb)->expect, count);
 391                 memcpy(skb_put(skb, len), buffer, len);
 392
 393                 count -= len;
 394                 buffer += len;
 395                 bt_cb(skb)->expect -= len;
 396
 397                 if (skb->len == HCI_EVENT_HDR_SIZE) {
 398                         /* Complete event header */
 399                         bt_cb(skb)->expect = hci_event_hdr(skb)->plen;
 400
 401                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 402                                 kfree_skb(skb);
 403                                 skb = NULL;
 404
 405                                 err = -EILSEQ;
 406                                 break;
 407                         }
 408                 }
 409
 410                 if (bt_cb(skb)->expect == 0) {
 411                         /* Complete frame */
 412                         data->recv_event(data->hdev, skb);
 413                         skb = NULL;
 414                 }
 415         }
 416
 417         data->evt_skb = skb;
 418         spin_unlock(&data->rxlock);
 419
 420         return err;
 421 }
 422
 423 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
 424 {
 425         struct sk_buff *skb;
 426         int err = 0;
 427
 428         spin_lock(&data->rxlock);
 429         skb = data->acl_skb;
 430
 431         while (count) {
 432                 int len;
 433
 434                 if (!skb) {
 435                         skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
 436                         if (!skb) {
 437                                 err = -ENOMEM;
 438                                 break;
 439                         }
 440
 441                         bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT;
 442                         bt_cb(skb)->expect = HCI_ACL_HDR_SIZE;
 443                 }
 444
 445                 len = min_t(uint, bt_cb(skb)->expect, count);
 446                 memcpy(skb_put(skb, len), buffer, len);
 447
 448                 count -= len;
 449                 buffer += len;
 450                 bt_cb(skb)->expect -= len;
 451
 452                 if (skb->len == HCI_ACL_HDR_SIZE) {
 453                         __le16 dlen = hci_acl_hdr(skb)->dlen;
 454
 455                         /* Complete ACL header */
 456                         bt_cb(skb)->expect = __le16_to_cpu(dlen);
 457
 458                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 459                                 kfree_skb(skb);
 460                                 skb = NULL;
 461
 462                                 err = -EILSEQ;
 463                                 break;
 464                         }
 465                 }
 466
 467                 if (bt_cb(skb)->expect == 0) {
 468                         /* Complete frame */
 469                         hci_recv_frame(data->hdev, skb);
 470                         skb = NULL;
 471                 }
 472         }
 473
 474         data->acl_skb = skb;
 475         spin_unlock(&data->rxlock);
 476
 477         return err;
 478 }
 479
 480 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
 481 {
 482         struct sk_buff *skb;
 483         int err = 0;
 484
 485         spin_lock(&data->rxlock);
 486         skb = data->sco_skb;
 487
 488         while (count) {
 489                 int len;
 490
 491                 if (!skb) {
 492                         skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
 493                         if (!skb) {
 494                                 err = -ENOMEM;
 495                                 break;
 496                         }
 497
 498                         bt_cb(skb)->pkt_type = HCI_SCODATA_PKT;
 499                         bt_cb(skb)->expect = HCI_SCO_HDR_SIZE;
 500                 }
 501
 502                 len = min_t(uint, bt_cb(skb)->expect, count);
 503                 memcpy(skb_put(skb, len), buffer, len);
 504
 505                 count -= len;
 506                 buffer += len;
 507                 bt_cb(skb)->expect -= len;
 508
 509                 if (skb->len == HCI_SCO_HDR_SIZE) {
 510                         /* Complete SCO header */
 511                         bt_cb(skb)->expect = hci_sco_hdr(skb)->dlen;
 512
 513                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 514                                 kfree_skb(skb);
 515                                 skb = NULL;
 516
 517                                 err = -EILSEQ;
 518                                 break;
 519                         }
 520                 }
 521
 522                 if (bt_cb(skb)->expect == 0) {
 523                         /* Complete frame */
 524                         hci_recv_frame(data->hdev, skb);
 525                         skb = NULL;
 526                 }
 527         }
 528
 529         data->sco_skb = skb;
 530         spin_unlock(&data->rxlock);
 531
 532         return err;
 533 }
 534
 535 static void btusb_intr_complete(struct urb *urb)
 536 {
 537         struct hci_dev *hdev = urb->context;
 538         struct btusb_data *data = hci_get_drvdata(hdev);
 539         int err;
 540
 541         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 542                urb->actual_length);
 543
 544         if (!test_bit(HCI_RUNNING, &hdev->flags))
 545                 return;
 546
 547         if (urb->status == 0) {
 548                 hdev->stat.byte_rx += urb->actual_length;
 549
 550                 if (btusb_recv_intr(data, urb->transfer_buffer,
 551                                     urb->actual_length) < 0) {
 552                         BT_ERR("%s corrupted event packet", hdev->name);
 553                         hdev->stat.err_rx++;
 554                 }
 555         } else if (urb->status == -ENOENT) {
 556                 /* Avoid suspend failed when usb_kill_urb */
 557                 return;
 558         }
 559
 560         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 561                 return;
 562
 563         usb_mark_last_busy(data->udev);
 564         usb_anchor_urb(urb, &data->intr_anchor);
 565
 566         err = usb_submit_urb(urb, GFP_ATOMIC);
 567         if (err < 0) {
 568                 /* -EPERM: urb is being killed;
 569                  * -ENODEV: device got disconnected */
 570                 if (err != -EPERM && err != -ENODEV)
 571                         BT_ERR("%s urb %p failed to resubmit (%d)",
 572                                hdev->name, urb, -err);
 573                 usb_unanchor_urb(urb);
 574         }
 575 }
 576
 577 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 578 {
 579         struct btusb_data *data = hci_get_drvdata(hdev);
 580         struct urb *urb;
 581         unsigned char *buf;
 582         unsigned int pipe;
 583         int err, size;
 584
 585         BT_DBG("%s", hdev->name);
 586
 587         if (!data->intr_ep)
 588                 return -ENODEV;
 589
 590         urb = usb_alloc_urb(0, mem_flags);
 591         if (!urb)
 592                 return -ENOMEM;
 593
 594         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 595
 596         buf = kmalloc(size, mem_flags);
 597         if (!buf) {
 598                 usb_free_urb(urb);
 599                 return -ENOMEM;
 600         }
 601
 602         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 603
 604         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 605                          btusb_intr_complete, hdev, data->intr_ep->bInterval);
 606
 607         urb->transfer_flags |= URB_FREE_BUFFER;
 608
 609         usb_anchor_urb(urb, &data->intr_anchor);
 610
 611         err = usb_submit_urb(urb, mem_flags);
 612         if (err < 0) {
 613                 if (err != -EPERM && err != -ENODEV)
 614                         BT_ERR("%s urb %p submission failed (%d)",
 615                                hdev->name, urb, -err);
 616                 usb_unanchor_urb(urb);
 617         }
 618
 619         usb_free_urb(urb);
 620
 621         return err;
 622 }
 623
 624 static void btusb_bulk_complete(struct urb *urb)
 625 {
 626         struct hci_dev *hdev = urb->context;
 627         struct btusb_data *data = hci_get_drvdata(hdev);
 628         int err;
 629
 630         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 631                urb->actual_length);
 632
 633         if (!test_bit(HCI_RUNNING, &hdev->flags))
 634                 return;
 635
 636         if (urb->status == 0) {
 637                 hdev->stat.byte_rx += urb->actual_length;
 638
 639                 if (data->recv_bulk(data, urb->transfer_buffer,
 640                                     urb->actual_length) < 0) {
 641                         BT_ERR("%s corrupted ACL packet", hdev->name);
 642                         hdev->stat.err_rx++;
 643                 }
 644         } else if (urb->status == -ENOENT) {
 645                 /* Avoid suspend failed when usb_kill_urb */
 646                 return;
 647         }
 648
 649         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 650                 return;
 651
 652         usb_anchor_urb(urb, &data->bulk_anchor);
 653         usb_mark_last_busy(data->udev);
 654
 655         err = usb_submit_urb(urb, GFP_ATOMIC);
 656         if (err < 0) {
 657                 /* -EPERM: urb is being killed;
 658                  * -ENODEV: device got disconnected */
 659                 if (err != -EPERM && err != -ENODEV)
 660                         BT_ERR("%s urb %p failed to resubmit (%d)",
 661                                hdev->name, urb, -err);
 662                 usb_unanchor_urb(urb);
 663         }
 664 }
 665
 666 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 667 {
 668         struct btusb_data *data = hci_get_drvdata(hdev);
 669         struct urb *urb;
 670         unsigned char *buf;
 671         unsigned int pipe;
 672         int err, size = HCI_MAX_FRAME_SIZE;
 673
 674         BT_DBG("%s", hdev->name);
 675
 676         if (!data->bulk_rx_ep)
 677                 return -ENODEV;
 678
 679         urb = usb_alloc_urb(0, mem_flags);
 680         if (!urb)
 681                 return -ENOMEM;
 682
 683         buf = kmalloc(size, mem_flags);
 684         if (!buf) {
 685                 usb_free_urb(urb);
 686                 return -ENOMEM;
 687         }
 688
 689         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 690
 691         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
 692                           btusb_bulk_complete, hdev);
 693
 694         urb->transfer_flags |= URB_FREE_BUFFER;
 695
 696         usb_mark_last_busy(data->udev);
 697         usb_anchor_urb(urb, &data->bulk_anchor);
 698
 699         err = usb_submit_urb(urb, mem_flags);
 700         if (err < 0) {
 701                 if (err != -EPERM && err != -ENODEV)
 702                         BT_ERR("%s urb %p submission failed (%d)",
 703                                hdev->name, urb, -err);
 704                 usb_unanchor_urb(urb);
 705         }
 706
 707         usb_free_urb(urb);
 708
 709         return err;
 710 }
 711
 712 static void btusb_isoc_complete(struct urb *urb)
 713 {
 714         struct hci_dev *hdev = urb->context;
 715         struct btusb_data *data = hci_get_drvdata(hdev);
 716         int i, err;
 717
 718         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 719                urb->actual_length);
 720
 721         if (!test_bit(HCI_RUNNING, &hdev->flags))
 722                 return;
 723
 724         if (urb->status == 0) {
 725                 for (i = 0; i < urb->number_of_packets; i++) {
 726                         unsigned int offset = urb->iso_frame_desc[i].offset;
 727                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 728
 729                         if (urb->iso_frame_desc[i].status)
 730                                 continue;
 731
 732                         hdev->stat.byte_rx += length;
 733
 734                         if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
 735                                             length) < 0) {
 736                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 737                                 hdev->stat.err_rx++;
 738                         }
 739                 }
 740         } else if (urb->status == -ENOENT) {
 741                 /* Avoid suspend failed when usb_kill_urb */
 742                 return;
 743         }
 744
 745         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 746                 return;
 747
 748         usb_anchor_urb(urb, &data->isoc_anchor);
 749
 750         err = usb_submit_urb(urb, GFP_ATOMIC);
 751         if (err < 0) {
 752                 /* -EPERM: urb is being killed;
 753                  * -ENODEV: device got disconnected */
 754                 if (err != -EPERM && err != -ENODEV)
 755                         BT_ERR("%s urb %p failed to resubmit (%d)",
 756                                hdev->name, urb, -err);
 757                 usb_unanchor_urb(urb);
 758         }
 759 }
 760
 761 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 762 {
 763         int i, offset = 0;
 764
 765         BT_DBG("len %d mtu %d", len, mtu);
 766
 767         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 768                                         i++, offset += mtu, len -= mtu) {
 769                 urb->iso_frame_desc[i].offset = offset;
 770                 urb->iso_frame_desc[i].length = mtu;
 771         }
 772
 773         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 774                 urb->iso_frame_desc[i].offset = offset;
 775                 urb->iso_frame_desc[i].length = len;
 776                 i++;
 777         }
 778
 779         urb->number_of_packets = i;
 780 }
 781
 782 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 783 {
 784         struct btusb_data *data = hci_get_drvdata(hdev);
 785         struct urb *urb;
 786         unsigned char *buf;
 787         unsigned int pipe;
 788         int err, size;
 789
 790         BT_DBG("%s", hdev->name);
 791
 792         if (!data->isoc_rx_ep)
 793                 return -ENODEV;
 794
 795         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 796         if (!urb)
 797                 return -ENOMEM;
 798
 799         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 800                                                 BTUSB_MAX_ISOC_FRAMES;
 801
 802         buf = kmalloc(size, mem_flags);
 803         if (!buf) {
 804                 usb_free_urb(urb);
 805                 return -ENOMEM;
 806         }
 807
 808         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 809
 810         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 811                          hdev, data->isoc_rx_ep->bInterval);
 812
 813         urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
 814
 815         __fill_isoc_descriptor(urb, size,
 816                                le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 817
 818         usb_anchor_urb(urb, &data->isoc_anchor);
 819
 820         err = usb_submit_urb(urb, mem_flags);
 821         if (err < 0) {
 822                 if (err != -EPERM && err != -ENODEV)
 823                         BT_ERR("%s urb %p submission failed (%d)",
 824                                hdev->name, urb, -err);
 825                 usb_unanchor_urb(urb);
 826         }
 827
 828         usb_free_urb(urb);
 829
 830         return err;
 831 }
 832
 833 static void btusb_tx_complete(struct urb *urb)
 834 {
 835         struct sk_buff *skb = urb->context;
 836         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
 837         struct btusb_data *data = hci_get_drvdata(hdev);
 838
 839         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 840                urb->actual_length);
 841
 842         if (!test_bit(HCI_RUNNING, &hdev->flags))
 843                 goto done;
 844
 845         if (!urb->status)
 846                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 847         else
 848                 hdev->stat.err_tx++;
 849
 850 done:
 851         spin_lock(&data->txlock);
 852         data->tx_in_flight--;
 853         spin_unlock(&data->txlock);
 854
 855         kfree(urb->setup_packet);
 856
 857         kfree_skb(skb);
 858 }
 859
 860 static void btusb_isoc_tx_complete(struct urb *urb)
 861 {
 862         struct sk_buff *skb = urb->context;
 863         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
 864
 865         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 866                urb->actual_length);
 867
 868         if (!test_bit(HCI_RUNNING, &hdev->flags))
 869                 goto done;
 870
 871         if (!urb->status)
 872                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 873         else
 874                 hdev->stat.err_tx++;
 875
 876 done:
 877         kfree(urb->setup_packet);
 878
 879         kfree_skb(skb);
 880 }
 881
 882 static int btusb_open(struct hci_dev *hdev)
 883 {
 884         struct btusb_data *data = hci_get_drvdata(hdev);
 885         int err;
 886
 887         BT_DBG("%s", hdev->name);
 888
 889         /* Patching USB firmware files prior to starting any URBs of HCI path
 890          * It is more safe to use USB bulk channel for downloading USB patch
 891          */
 892         if (data->setup_on_usb) {
 893                 err = data->setup_on_usb(hdev);
 894                 if (err <0)
 895                         return err;
 896         }
 897
 898         err = usb_autopm_get_interface(data->intf);
 899         if (err < 0)
 900                 return err;
 901
 902         data->intf->needs_remote_wakeup = 1;
 903
 904         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 905                 goto done;
 906
 907         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 908                 goto done;
 909
 910         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 911         if (err < 0)
 912                 goto failed;
 913
 914         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 915         if (err < 0) {
 916                 usb_kill_anchored_urbs(&data->intr_anchor);
 917                 goto failed;
 918         }
 919
 920         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 921         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 922
 923 done:
 924         usb_autopm_put_interface(data->intf);
 925         return 0;
 926
 927 failed:
 928         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 929         clear_bit(HCI_RUNNING, &hdev->flags);
 930         usb_autopm_put_interface(data->intf);
 931         return err;
 932 }
 933
 934 static void btusb_stop_traffic(struct btusb_data *data)
 935 {
 936         usb_kill_anchored_urbs(&data->intr_anchor);
 937         usb_kill_anchored_urbs(&data->bulk_anchor);
 938         usb_kill_anchored_urbs(&data->isoc_anchor);
 939 }
 940
 941 static int btusb_close(struct hci_dev *hdev)
 942 {
 943         struct btusb_data *data = hci_get_drvdata(hdev);
 944         int err;
 945
 946         BT_DBG("%s", hdev->name);
 947
 948         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 949                 return 0;
 950
 951         cancel_work_sync(&data->work);
 952         cancel_work_sync(&data->waker);
 953
 954         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 955         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 956         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 957
 958         btusb_stop_traffic(data);
 959         btusb_free_frags(data);
 960
 961         err = usb_autopm_get_interface(data->intf);
 962         if (err < 0)
 963                 goto failed;
 964
 965         data->intf->needs_remote_wakeup = 0;
 966         usb_autopm_put_interface(data->intf);
 967
 968 failed:
 969         usb_scuttle_anchored_urbs(&data->deferred);
 970         return 0;
 971 }
 972
 973 static int btusb_flush(struct hci_dev *hdev)
 974 {
 975         struct btusb_data *data = hci_get_drvdata(hdev);
 976
 977         BT_DBG("%s", hdev->name);
 978
 979         usb_kill_anchored_urbs(&data->tx_anchor);
 980         btusb_free_frags(data);
 981
 982         return 0;
 983 }
 984
 985 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
 986 {
 987         struct btusb_data *data = hci_get_drvdata(hdev);
 988         struct usb_ctrlrequest *dr;
 989         struct urb *urb;
 990         unsigned int pipe;
 991
 992         urb = usb_alloc_urb(0, GFP_KERNEL);
 993         if (!urb)
 994                 return ERR_PTR(-ENOMEM);
 995
 996         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
 997         if (!dr) {
 998                 usb_free_urb(urb);
 999                 return ERR_PTR(-ENOMEM);
1000         }
1001
1002         dr->bRequestType = data->cmdreq_type;
1003         dr->bRequest     = data->cmdreq;
1004         dr->wIndex       = 0;
1005         dr->wValue       = 0;
1006         dr->wLength      = __cpu_to_le16(skb->len);
1007
1008         pipe = usb_sndctrlpipe(data->udev, 0x00);
1009
1010         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
1011                              skb->data, skb->len, btusb_tx_complete, skb);
1012
1013         skb->dev = (void *)hdev;
1014
1015         return urb;
1016 }
1017
1018 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
1019 {
1020         struct btusb_data *data = hci_get_drvdata(hdev);
1021         struct urb *urb;
1022         unsigned int pipe;
1023
1024         if (!data->bulk_tx_ep)
1025                 return ERR_PTR(-ENODEV);
1026
1027         urb = usb_alloc_urb(0, GFP_KERNEL);
1028         if (!urb)
1029                 return ERR_PTR(-ENOMEM);
1030
1031         pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1032
1033         usb_fill_bulk_urb(urb, data->udev, pipe,
1034                           skb->data, skb->len, btusb_tx_complete, skb);
1035
1036         skb->dev = (void *)hdev;
1037
1038         return urb;
1039 }
1040
1041 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1042 {
1043         struct btusb_data *data = hci_get_drvdata(hdev);
1044         struct urb *urb;
1045         unsigned int pipe;
1046
1047         if (!data->isoc_tx_ep)
1048                 return ERR_PTR(-ENODEV);
1049
1050         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1051         if (!urb)
1052                 return ERR_PTR(-ENOMEM);
1053
1054         pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1055
1056         usb_fill_int_urb(urb, data->udev, pipe,
1057                          skb->data, skb->len, btusb_isoc_tx_complete,
1058                          skb, data->isoc_tx_ep->bInterval);
1059
1060         urb->transfer_flags  = URB_ISO_ASAP;
1061
1062         __fill_isoc_descriptor(urb, skb->len,
1063                                le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1064
1065         skb->dev = (void *)hdev;
1066
1067         return urb;
1068 }
1069
1070 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1071 {
1072         struct btusb_data *data = hci_get_drvdata(hdev);
1073         int err;
1074
1075         usb_anchor_urb(urb, &data->tx_anchor);
1076
1077         err = usb_submit_urb(urb, GFP_KERNEL);
1078         if (err < 0) {
1079                 if (err != -EPERM && err != -ENODEV)
1080                         BT_ERR("%s urb %p submission failed (%d)",
1081                                hdev->name, urb, -err);
1082                 kfree(urb->setup_packet);
1083                 usb_unanchor_urb(urb);
1084         } else {
1085                 usb_mark_last_busy(data->udev);
1086         }
1087
1088         usb_free_urb(urb);
1089         return err;
1090 }
1091
1092 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1093 {
1094         struct btusb_data *data = hci_get_drvdata(hdev);
1095         unsigned long flags;
1096         bool suspending;
1097
1098         spin_lock_irqsave(&data->txlock, flags);
1099         suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1100         if (!suspending)
1101                 data->tx_in_flight++;
1102         spin_unlock_irqrestore(&data->txlock, flags);
1103
1104         if (!suspending)
1105                 return submit_tx_urb(hdev, urb);
1106
1107         usb_anchor_urb(urb, &data->deferred);
1108         schedule_work(&data->waker);
1109
1110         usb_free_urb(urb);
1111         return 0;
1112 }
1113
1114 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1115 {
1116         struct urb *urb;
1117
1118         BT_DBG("%s", hdev->name);
1119
1120         if (!test_bit(HCI_RUNNING, &hdev->flags))
1121                 return -EBUSY;
1122
1123         switch (bt_cb(skb)->pkt_type) {
1124         case HCI_COMMAND_PKT:
1125                 urb = alloc_ctrl_urb(hdev, skb);
1126                 if (IS_ERR(urb))
1127                         return PTR_ERR(urb);
1128
1129                 hdev->stat.cmd_tx++;
1130                 return submit_or_queue_tx_urb(hdev, urb);
1131
1132         case HCI_ACLDATA_PKT:
1133                 urb = alloc_bulk_urb(hdev, skb);
1134                 if (IS_ERR(urb))
1135                         return PTR_ERR(urb);
1136
1137                 hdev->stat.acl_tx++;
1138                 return submit_or_queue_tx_urb(hdev, urb);
1139
1140         case HCI_SCODATA_PKT:
1141                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1142                         return -ENODEV;
1143
1144                 urb = alloc_isoc_urb(hdev, skb);
1145                 if (IS_ERR(urb))
1146                         return PTR_ERR(urb);
1147
1148                 hdev->stat.sco_tx++;
1149                 return submit_tx_urb(hdev, urb);
1150         }
1151
1152         return -EILSEQ;
1153 }
1154
1155 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1156 {
1157         struct btusb_data *data = hci_get_drvdata(hdev);
1158
1159         BT_DBG("%s evt %d", hdev->name, evt);
1160
1161         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1162                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1163                 schedule_work(&data->work);
1164         }
1165 }
1166
1167 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1168 {
1169         struct btusb_data *data = hci_get_drvdata(hdev);
1170         struct usb_interface *intf = data->isoc;
1171         struct usb_endpoint_descriptor *ep_desc;
1172         int i, err;
1173
1174         if (!data->isoc)
1175                 return -ENODEV;
1176
1177         err = usb_set_interface(data->udev, 1, altsetting);
1178         if (err < 0) {
1179                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
1180                 return err;
1181         }
1182
1183         data->isoc_altsetting = altsetting;
1184
1185         data->isoc_tx_ep = NULL;
1186         data->isoc_rx_ep = NULL;
1187
1188         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1189                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1190
1191                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1192                         data->isoc_tx_ep = ep_desc;
1193                         continue;
1194                 }
1195
1196                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1197                         data->isoc_rx_ep = ep_desc;
1198                         continue;
1199                 }
1200         }
1201
1202         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1203                 BT_ERR("%s invalid SCO descriptors", hdev->name);
1204                 return -ENODEV;
1205         }
1206
1207         return 0;
1208 }
1209
1210 static void btusb_work(struct work_struct *work)
1211 {
1212         struct btusb_data *data = container_of(work, struct btusb_data, work);
1213         struct hci_dev *hdev = data->hdev;
1214         int new_alts;
1215         int err;
1216
1217         if (data->sco_num > 0) {
1218                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1219                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1220                         if (err < 0) {
1221                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1222                                 usb_kill_anchored_urbs(&data->isoc_anchor);
1223                                 return;
1224                         }
1225
1226                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1227                 }
1228
1229                 if (hdev->voice_setting & 0x0020) {
1230                         static const int alts[3] = { 2, 4, 5 };
1231
1232                         new_alts = alts[data->sco_num - 1];
1233                 } else {
1234                         new_alts = data->sco_num;
1235                 }
1236
1237                 if (data->isoc_altsetting != new_alts) {
1238                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1239                         usb_kill_anchored_urbs(&data->isoc_anchor);
1240
1241                         if (__set_isoc_interface(hdev, new_alts) < 0)
1242                                 return;
1243                 }
1244
1245                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1246                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1247                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1248                         else
1249                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1250                 }
1251         } else {
1252                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1253                 usb_kill_anchored_urbs(&data->isoc_anchor);
1254
1255                 __set_isoc_interface(hdev, 0);
1256                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1257                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1258         }
1259 }
1260
1261 static void btusb_waker(struct work_struct *work)
1262 {
1263         struct btusb_data *data = container_of(work, struct btusb_data, waker);
1264         int err;
1265
1266         err = usb_autopm_get_interface(data->intf);
1267         if (err < 0)
1268                 return;
1269
1270         usb_autopm_put_interface(data->intf);
1271 }
1272
1273 static struct sk_buff *btusb_read_local_version(struct hci_dev *hdev)
1274 {
1275         struct sk_buff *skb;
1276
1277         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1278                              HCI_INIT_TIMEOUT);
1279         if (IS_ERR(skb)) {
1280                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION failed (%ld)",
1281                        hdev->name, PTR_ERR(skb));
1282                 return skb;
1283         }
1284
1285         if (skb->len != sizeof(struct hci_rp_read_local_version)) {
1286                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION event length mismatch",
1287                        hdev->name);
1288                 kfree_skb(skb);
1289                 return ERR_PTR(-EIO);
1290         }
1291
1292         return skb;
1293 }
1294
1295 static int btusb_setup_bcm92035(struct hci_dev *hdev)
1296 {
1297         struct sk_buff *skb;
1298         u8 val = 0x00;
1299
1300         BT_DBG("%s", hdev->name);
1301
1302         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1303         if (IS_ERR(skb))
1304                 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
1305         else
1306                 kfree_skb(skb);
1307
1308         return 0;
1309 }
1310
1311 static int btusb_setup_csr(struct hci_dev *hdev)
1312 {
1313         struct hci_rp_read_local_version *rp;
1314         struct sk_buff *skb;
1315         int ret;
1316
1317         BT_DBG("%s", hdev->name);
1318
1319         skb = btusb_read_local_version(hdev);
1320         if (IS_ERR(skb))
1321                 return -PTR_ERR(skb);
1322
1323         rp = (struct hci_rp_read_local_version *)skb->data;
1324
1325         if (!rp->status) {
1326                 if (le16_to_cpu(rp->manufacturer) != 10) {
1327                         /* Clear the reset quirk since this is not an actual
1328                          * early Bluetooth 1.1 device from CSR.
1329                          */
1330                         clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1331
1332                         /* These fake CSR controllers have all a broken
1333                          * stored link key handling and so just disable it.
1334                          */
1335                         set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY,
1336                                 &hdev->quirks);
1337                 }
1338         }
1339
1340         ret = -bt_to_errno(rp->status);
1341
1342         kfree_skb(skb);
1343
1344         return ret;
1345 }
1346
1347 struct intel_version {
1348         u8 status;
1349         u8 hw_platform;
1350         u8 hw_variant;
1351         u8 hw_revision;
1352         u8 fw_variant;
1353         u8 fw_revision;
1354         u8 fw_build_num;
1355         u8 fw_build_ww;
1356         u8 fw_build_yy;
1357         u8 fw_patch_num;
1358 } __packed;
1359
1360 struct intel_boot_params {
1361         __u8     status;
1362         __u8     otp_format;
1363         __u8     otp_content;
1364         __u8     otp_patch;
1365         __le16   dev_revid;
1366         __u8     secure_boot;
1367         __u8     key_from_hdr;
1368         __u8     key_type;
1369         __u8     otp_lock;
1370         __u8     api_lock;
1371         __u8     debug_lock;
1372         bdaddr_t otp_bdaddr;
1373         __u8     min_fw_build_nn;
1374         __u8     min_fw_build_cw;
1375         __u8     min_fw_build_yy;
1376         __u8     limited_cce;
1377         __u8     unlocked_state;
1378 } __packed;
1379
1380 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1381                                                        struct intel_version *ver)
1382 {
1383         const struct firmware *fw;
1384         char fwname[64];
1385         int ret;
1386
1387         snprintf(fwname, sizeof(fwname),
1388                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1389                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
1390                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1391                  ver->fw_build_ww, ver->fw_build_yy);
1392
1393         ret = request_firmware(&fw, fwname, &hdev->dev);
1394         if (ret < 0) {
1395                 if (ret == -EINVAL) {
1396                         BT_ERR("%s Intel firmware file request failed (%d)",
1397                                hdev->name, ret);
1398                         return NULL;
1399                 }
1400
1401                 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1402                        hdev->name, fwname, ret);
1403
1404                 /* If the correct firmware patch file is not found, use the
1405                  * default firmware patch file instead
1406                  */
1407                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1408                          ver->hw_platform, ver->hw_variant);
1409                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1410                         BT_ERR("%s failed to open default Intel fw file: %s",
1411                                hdev->name, fwname);
1412                         return NULL;
1413                 }
1414         }
1415
1416         BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1417
1418         return fw;
1419 }
1420
1421 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1422                                       const struct firmware *fw,
1423                                       const u8 **fw_ptr, int *disable_patch)
1424 {
1425         struct sk_buff *skb;
1426         struct hci_command_hdr *cmd;
1427         const u8 *cmd_param;
1428         struct hci_event_hdr *evt = NULL;
1429         const u8 *evt_param = NULL;
1430         int remain = fw->size - (*fw_ptr - fw->data);
1431
1432         /* The first byte indicates the types of the patch command or event.
1433          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1434          * in the current firmware buffer doesn't start with 0x01 or
1435          * the size of remain buffer is smaller than HCI command header,
1436          * the firmware file is corrupted and it should stop the patching
1437          * process.
1438          */
1439         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1440                 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1441                 return -EINVAL;
1442         }
1443         (*fw_ptr)++;
1444         remain--;
1445
1446         cmd = (struct hci_command_hdr *)(*fw_ptr);
1447         *fw_ptr += sizeof(*cmd);
1448         remain -= sizeof(*cmd);
1449
1450         /* Ensure that the remain firmware data is long enough than the length
1451          * of command parameter. If not, the firmware file is corrupted.
1452          */
1453         if (remain < cmd->plen) {
1454                 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1455                 return -EFAULT;
1456         }
1457
1458         /* If there is a command that loads a patch in the firmware
1459          * file, then enable the patch upon success, otherwise just
1460          * disable the manufacturer mode, for example patch activation
1461          * is not required when the default firmware patch file is used
1462          * because there are no patch data to load.
1463          */
1464         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1465                 *disable_patch = 0;
1466
1467         cmd_param = *fw_ptr;
1468         *fw_ptr += cmd->plen;
1469         remain -= cmd->plen;
1470
1471         /* This reads the expected events when the above command is sent to the
1472          * device. Some vendor commands expects more than one events, for
1473          * example command status event followed by vendor specific event.
1474          * For this case, it only keeps the last expected event. so the command
1475          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1476          * last expected event.
1477          */
1478         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1479                 (*fw_ptr)++;
1480                 remain--;
1481
1482                 evt = (struct hci_event_hdr *)(*fw_ptr);
1483                 *fw_ptr += sizeof(*evt);
1484                 remain -= sizeof(*evt);
1485
1486                 if (remain < evt->plen) {
1487                         BT_ERR("%s Intel fw corrupted: invalid evt len",
1488                                hdev->name);
1489                         return -EFAULT;
1490                 }
1491
1492                 evt_param = *fw_ptr;
1493                 *fw_ptr += evt->plen;
1494                 remain -= evt->plen;
1495         }
1496
1497         /* Every HCI commands in the firmware file has its correspond event.
1498          * If event is not found or remain is smaller than zero, the firmware
1499          * file is corrupted.
1500          */
1501         if (!evt || !evt_param || remain < 0) {
1502                 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1503                 return -EFAULT;
1504         }
1505
1506         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1507                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1508         if (IS_ERR(skb)) {
1509                 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1510                        hdev->name, cmd->opcode, PTR_ERR(skb));
1511                 return PTR_ERR(skb);
1512         }
1513
1514         /* It ensures that the returned event matches the event data read from
1515          * the firmware file. At fist, it checks the length and then
1516          * the contents of the event.
1517          */
1518         if (skb->len != evt->plen) {
1519                 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1520                        le16_to_cpu(cmd->opcode));
1521                 kfree_skb(skb);
1522                 return -EFAULT;
1523         }
1524
1525         if (memcmp(skb->data, evt_param, evt->plen)) {
1526                 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1527                        hdev->name, le16_to_cpu(cmd->opcode));
1528                 kfree_skb(skb);
1529                 return -EFAULT;
1530         }
1531         kfree_skb(skb);
1532
1533         return 0;
1534 }
1535
1536 #define BDADDR_INTEL (&(bdaddr_t) {{0x00, 0x8b, 0x9e, 0x19, 0x03, 0x00}})
1537
1538 static int btusb_check_bdaddr_intel(struct hci_dev *hdev)
1539 {
1540         struct sk_buff *skb;
1541         struct hci_rp_read_bd_addr *rp;
1542
1543         skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
1544                              HCI_INIT_TIMEOUT);
1545         if (IS_ERR(skb)) {
1546                 BT_ERR("%s reading Intel device address failed (%ld)",
1547                        hdev->name, PTR_ERR(skb));
1548                 return PTR_ERR(skb);
1549         }
1550
1551         if (skb->len != sizeof(*rp)) {
1552                 BT_ERR("%s Intel device address length mismatch", hdev->name);
1553                 kfree_skb(skb);
1554                 return -EIO;
1555         }
1556
1557         rp = (struct hci_rp_read_bd_addr *)skb->data;
1558         if (rp->status) {
1559                 BT_ERR("%s Intel device address result failed (%02x)",
1560                        hdev->name, rp->status);
1561                 kfree_skb(skb);
1562                 return -bt_to_errno(rp->status);
1563         }
1564
1565         /* For some Intel based controllers, the default Bluetooth device
1566          * address 00:03:19:9E:8B:00 can be found. These controllers are
1567          * fully operational, but have the danger of duplicate addresses
1568          * and that in turn can cause problems with Bluetooth operation.
1569          */
1570         if (!bacmp(&rp->bdaddr, BDADDR_INTEL)) {
1571                 BT_ERR("%s found Intel default device address (%pMR)",
1572                        hdev->name, &rp->bdaddr);
1573                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
1574         }
1575
1576         kfree_skb(skb);
1577
1578         return 0;
1579 }
1580
1581 static int btusb_setup_intel(struct hci_dev *hdev)
1582 {
1583         struct sk_buff *skb;
1584         const struct firmware *fw;
1585         const u8 *fw_ptr;
1586         int disable_patch;
1587         struct intel_version *ver;
1588
1589         const u8 mfg_enable[] = { 0x01, 0x00 };
1590         const u8 mfg_disable[] = { 0x00, 0x00 };
1591         const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
1592         const u8 mfg_reset_activate[] = { 0x00, 0x02 };
1593
1594         BT_DBG("%s", hdev->name);
1595
1596         /* The controller has a bug with the first HCI command sent to it
1597          * returning number of completed commands as zero. This would stall the
1598          * command processing in the Bluetooth core.
1599          *
1600          * As a workaround, send HCI Reset command first which will reset the
1601          * number of completed commands and allow normal command processing
1602          * from now on.
1603          */
1604         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1605         if (IS_ERR(skb)) {
1606                 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1607                        hdev->name, PTR_ERR(skb));
1608                 return PTR_ERR(skb);
1609         }
1610         kfree_skb(skb);
1611
1612         /* Read Intel specific controller version first to allow selection of
1613          * which firmware file to load.
1614          *
1615          * The returned information are hardware variant and revision plus
1616          * firmware variant, revision and build number.
1617          */
1618         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1619         if (IS_ERR(skb)) {
1620                 BT_ERR("%s reading Intel fw version command failed (%ld)",
1621                        hdev->name, PTR_ERR(skb));
1622                 return PTR_ERR(skb);
1623         }
1624
1625         if (skb->len != sizeof(*ver)) {
1626                 BT_ERR("%s Intel version event length mismatch", hdev->name);
1627                 kfree_skb(skb);
1628                 return -EIO;
1629         }
1630
1631         ver = (struct intel_version *)skb->data;
1632         if (ver->status) {
1633                 BT_ERR("%s Intel fw version event failed (%02x)", hdev->name,
1634                        ver->status);
1635                 kfree_skb(skb);
1636                 return -bt_to_errno(ver->status);
1637         }
1638
1639         BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1640                 hdev->name, ver->hw_platform, ver->hw_variant,
1641                 ver->hw_revision, ver->fw_variant,  ver->fw_revision,
1642                 ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
1643                 ver->fw_patch_num);
1644
1645         /* fw_patch_num indicates the version of patch the device currently
1646          * have. If there is no patch data in the device, it is always 0x00.
1647          * So, if it is other than 0x00, no need to patch the deivce again.
1648          */
1649         if (ver->fw_patch_num) {
1650                 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1651                         hdev->name, ver->fw_patch_num);
1652                 kfree_skb(skb);
1653                 btusb_check_bdaddr_intel(hdev);
1654                 return 0;
1655         }
1656
1657         /* Opens the firmware patch file based on the firmware version read
1658          * from the controller. If it fails to open the matching firmware
1659          * patch file, it tries to open the default firmware patch file.
1660          * If no patch file is found, allow the device to operate without
1661          * a patch.
1662          */
1663         fw = btusb_setup_intel_get_fw(hdev, ver);
1664         if (!fw) {
1665                 kfree_skb(skb);
1666                 btusb_check_bdaddr_intel(hdev);
1667                 return 0;
1668         }
1669         fw_ptr = fw->data;
1670
1671         /* This Intel specific command enables the manufacturer mode of the
1672          * controller.
1673          *
1674          * Only while this mode is enabled, the driver can download the
1675          * firmware patch data and configuration parameters.
1676          */
1677         skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
1678         if (IS_ERR(skb)) {
1679                 BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
1680                        hdev->name, PTR_ERR(skb));
1681                 release_firmware(fw);
1682                 return PTR_ERR(skb);
1683         }
1684
1685         if (skb->data[0]) {
1686                 u8 evt_status = skb->data[0];
1687
1688                 BT_ERR("%s enable Intel manufacturer mode event failed (%02x)",
1689                        hdev->name, evt_status);
1690                 kfree_skb(skb);
1691                 release_firmware(fw);
1692                 return -bt_to_errno(evt_status);
1693         }
1694         kfree_skb(skb);
1695
1696         disable_patch = 1;
1697
1698         /* The firmware data file consists of list of Intel specific HCI
1699          * commands and its expected events. The first byte indicates the
1700          * type of the message, either HCI command or HCI event.
1701          *
1702          * It reads the command and its expected event from the firmware file,
1703          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1704          * the returned event is compared with the event read from the firmware
1705          * file and it will continue until all the messages are downloaded to
1706          * the controller.
1707          *
1708          * Once the firmware patching is completed successfully,
1709          * the manufacturer mode is disabled with reset and activating the
1710          * downloaded patch.
1711          *
1712          * If the firmware patching fails, the manufacturer mode is
1713          * disabled with reset and deactivating the patch.
1714          *
1715          * If the default patch file is used, no reset is done when disabling
1716          * the manufacturer.
1717          */
1718         while (fw->size > fw_ptr - fw->data) {
1719                 int ret;
1720
1721                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1722                                                  &disable_patch);
1723                 if (ret < 0)
1724                         goto exit_mfg_deactivate;
1725         }
1726
1727         release_firmware(fw);
1728
1729         if (disable_patch)
1730                 goto exit_mfg_disable;
1731
1732         /* Patching completed successfully and disable the manufacturer mode
1733          * with reset and activate the downloaded firmware patches.
1734          */
1735         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
1736                              mfg_reset_activate, HCI_INIT_TIMEOUT);
1737         if (IS_ERR(skb)) {
1738                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1739                        hdev->name, PTR_ERR(skb));
1740                 return PTR_ERR(skb);
1741         }
1742         kfree_skb(skb);
1743
1744         BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1745                 hdev->name);
1746
1747         btusb_check_bdaddr_intel(hdev);
1748         return 0;
1749
1750 exit_mfg_disable:
1751         /* Disable the manufacturer mode without reset */
1752         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
1753                              HCI_INIT_TIMEOUT);
1754         if (IS_ERR(skb)) {
1755                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1756                        hdev->name, PTR_ERR(skb));
1757                 return PTR_ERR(skb);
1758         }
1759         kfree_skb(skb);
1760
1761         BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1762
1763         btusb_check_bdaddr_intel(hdev);
1764         return 0;
1765
1766 exit_mfg_deactivate:
1767         release_firmware(fw);
1768
1769         /* Patching failed. Disable the manufacturer mode with reset and
1770          * deactivate the downloaded firmware patches.
1771          */
1772         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
1773                              mfg_reset_deactivate, HCI_INIT_TIMEOUT);
1774         if (IS_ERR(skb)) {
1775                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1776                        hdev->name, PTR_ERR(skb));
1777                 return PTR_ERR(skb);
1778         }
1779         kfree_skb(skb);
1780
1781         BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1782                 hdev->name);
1783
1784         btusb_check_bdaddr_intel(hdev);
1785         return 0;
1786 }
1787
1788 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
1789 {
1790         struct sk_buff *skb;
1791         struct hci_event_hdr *hdr;
1792         struct hci_ev_cmd_complete *evt;
1793
1794         skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_ATOMIC);
1795         if (!skb)
1796                 return -ENOMEM;
1797
1798         hdr = (struct hci_event_hdr *)skb_put(skb, sizeof(*hdr));
1799         hdr->evt = HCI_EV_CMD_COMPLETE;
1800         hdr->plen = sizeof(*evt) + 1;
1801
1802         evt = (struct hci_ev_cmd_complete *)skb_put(skb, sizeof(*evt));
1803         evt->ncmd = 0x01;
1804         evt->opcode = cpu_to_le16(opcode);
1805
1806         *skb_put(skb, 1) = 0x00;
1807
1808         bt_cb(skb)->pkt_type = HCI_EVENT_PKT;
1809
1810         return hci_recv_frame(hdev, skb);
1811 }
1812
1813 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
1814                                  int count)
1815 {
1816         /* When the device is in bootloader mode, then it can send
1817          * events via the bulk endpoint. These events are treated the
1818          * same way as the ones received from the interrupt endpoint.
1819          */
1820         if (test_bit(BTUSB_BOOTLOADER, &data->flags))
1821                 return btusb_recv_intr(data, buffer, count);
1822
1823         return btusb_recv_bulk(data, buffer, count);
1824 }
1825
1826 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
1827 {
1828         struct btusb_data *data = hci_get_drvdata(hdev);
1829
1830         if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1831                 struct hci_event_hdr *hdr = (void *)skb->data;
1832
1833                 /* When the firmware loading completes the device sends
1834                  * out a vendor specific event indicating the result of
1835                  * the firmware loading.
1836                  */
1837                 if (skb->len == 7 && hdr->evt == 0xff && hdr->plen == 0x05 &&
1838                     skb->data[2] == 0x06) {
1839                         if (skb->data[3] != 0x00)
1840                                 test_bit(BTUSB_FIRMWARE_FAILED, &data->flags);
1841
1842                         if (test_and_clear_bit(BTUSB_DOWNLOADING,
1843                                                &data->flags) &&
1844                             test_bit(BTUSB_FIRMWARE_LOADED, &data->flags)) {
1845                                 smp_mb__after_atomic();
1846                                 wake_up_bit(&data->flags, BTUSB_DOWNLOADING);
1847                         }
1848                 }
1849
1850                 /* When switching to the operational firmware the device
1851                  * sends a vendor specific event indicating that the bootup
1852                  * completed.
1853                  */
1854                 if (skb->len == 9 && hdr->evt == 0xff && hdr->plen == 0x07 &&
1855                     skb->data[2] == 0x02) {
1856                         if (test_and_clear_bit(BTUSB_BOOTING, &data->flags)) {
1857                                 smp_mb__after_atomic();
1858                                 wake_up_bit(&data->flags, BTUSB_BOOTING);
1859                         }
1860                 }
1861         }
1862
1863         return hci_recv_frame(hdev, skb);
1864 }
1865
1866 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
1867 {
1868         struct btusb_data *data = hci_get_drvdata(hdev);
1869         struct urb *urb;
1870
1871         BT_DBG("%s", hdev->name);
1872
1873         if (!test_bit(HCI_RUNNING, &hdev->flags))
1874                 return -EBUSY;
1875
1876         switch (bt_cb(skb)->pkt_type) {
1877         case HCI_COMMAND_PKT:
1878                 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1879                         struct hci_command_hdr *cmd = (void *)skb->data;
1880                         __u16 opcode = le16_to_cpu(cmd->opcode);
1881
1882                         /* When in bootloader mode and the command 0xfc09
1883                          * is received, it needs to be send down the
1884                          * bulk endpoint. So allocate a bulk URB instead.
1885                          */
1886                         if (opcode == 0xfc09)
1887                                 urb = alloc_bulk_urb(hdev, skb);
1888                         else
1889                                 urb = alloc_ctrl_urb(hdev, skb);
1890
1891                         /* When the 0xfc01 command is issued to boot into
1892                          * the operational firmware, it will actually not
1893                          * send a command complete event. To keep the flow
1894                          * control working inject that event here.
1895                          */
1896                         if (opcode == 0xfc01)
1897                                 inject_cmd_complete(hdev, opcode);
1898                 } else {
1899                         urb = alloc_ctrl_urb(hdev, skb);
1900                 }
1901                 if (IS_ERR(urb))
1902                         return PTR_ERR(urb);
1903
1904                 hdev->stat.cmd_tx++;
1905                 return submit_or_queue_tx_urb(hdev, urb);
1906
1907         case HCI_ACLDATA_PKT:
1908                 urb = alloc_bulk_urb(hdev, skb);
1909                 if (IS_ERR(urb))
1910                         return PTR_ERR(urb);
1911
1912                 hdev->stat.acl_tx++;
1913                 return submit_or_queue_tx_urb(hdev, urb);
1914
1915         case HCI_SCODATA_PKT:
1916                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1917                         return -ENODEV;
1918
1919                 urb = alloc_isoc_urb(hdev, skb);
1920                 if (IS_ERR(urb))
1921                         return PTR_ERR(urb);
1922
1923                 hdev->stat.sco_tx++;
1924                 return submit_tx_urb(hdev, urb);
1925         }
1926
1927         return -EILSEQ;
1928 }
1929
1930 static int btusb_intel_secure_send(struct hci_dev *hdev, u8 fragment_type,
1931                                    u32 plen, const void *param)
1932 {
1933         while (plen > 0) {
1934                 struct sk_buff *skb;
1935                 u8 cmd_param[253], fragment_len = (plen > 252) ? 252 : plen;
1936
1937                 cmd_param[0] = fragment_type;
1938                 memcpy(cmd_param + 1, param, fragment_len);
1939
1940                 skb = __hci_cmd_sync(hdev, 0xfc09, fragment_len + 1,
1941                                      cmd_param, HCI_INIT_TIMEOUT);
1942                 if (IS_ERR(skb))
1943                         return PTR_ERR(skb);
1944
1945                 kfree_skb(skb);
1946
1947                 plen -= fragment_len;
1948                 param += fragment_len;
1949         }
1950
1951         return 0;
1952 }
1953
1954 static void btusb_intel_version_info(struct hci_dev *hdev,
1955                                      struct intel_version *ver)
1956 {
1957         const char *variant;
1958
1959         switch (ver->fw_variant) {
1960         case 0x06:
1961                 variant = "Bootloader";
1962                 break;
1963         case 0x23:
1964                 variant = "Firmware";
1965                 break;
1966         default:
1967                 return;
1968         }
1969
1970         BT_INFO("%s: %s revision %u.%u build %u week %u %u", hdev->name,
1971                 variant, ver->fw_revision >> 4, ver->fw_revision & 0x0f,
1972                 ver->fw_build_num, ver->fw_build_ww, 2000 + ver->fw_build_yy);
1973 }
1974
1975 static int btusb_setup_intel_new(struct hci_dev *hdev)
1976 {
1977         static const u8 reset_param[] = { 0x00, 0x01, 0x00, 0x01,
1978                                           0x00, 0x08, 0x04, 0x00 };
1979         struct btusb_data *data = hci_get_drvdata(hdev);
1980         struct sk_buff *skb;
1981         struct intel_version *ver;
1982         struct intel_boot_params *params;
1983         const struct firmware *fw;
1984         const u8 *fw_ptr;
1985         char fwname[64];
1986         ktime_t calltime, delta, rettime;
1987         unsigned long long duration;
1988         int err;
1989
1990         BT_DBG("%s", hdev->name);
1991
1992         calltime = ktime_get();
1993
1994         /* Read the Intel version information to determine if the device
1995          * is in bootloader mode or if it already has operational firmware
1996          * loaded.
1997          */
1998         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1999         if (IS_ERR(skb)) {
2000                 BT_ERR("%s: Reading Intel version information failed (%ld)",
2001                        hdev->name, PTR_ERR(skb));
2002                 return PTR_ERR(skb);
2003         }
2004
2005         if (skb->len != sizeof(*ver)) {
2006                 BT_ERR("%s: Intel version event size mismatch", hdev->name);
2007                 kfree_skb(skb);
2008                 return -EILSEQ;
2009         }
2010
2011         ver = (struct intel_version *)skb->data;
2012         if (ver->status) {
2013                 BT_ERR("%s: Intel version command failure (%02x)",
2014                        hdev->name, ver->status);
2015                 err = -bt_to_errno(ver->status);
2016                 kfree_skb(skb);
2017                 return err;
2018         }
2019
2020         /* The hardware platform number has a fixed value of 0x37 and
2021          * for now only accept this single value.
2022          */
2023         if (ver->hw_platform != 0x37) {
2024                 BT_ERR("%s: Unsupported Intel hardware platform (%u)",
2025                        hdev->name, ver->hw_platform);
2026                 kfree_skb(skb);
2027                 return -EINVAL;
2028         }
2029
2030         /* At the moment only the hardware variant iBT 3.0 (LnP/SfP) is
2031          * supported by this firmware loading method. This check has been
2032          * put in place to ensure correct forward compatibility options
2033          * when newer hardware variants come along.
2034          */
2035         if (ver->hw_variant != 0x0b) {
2036                 BT_ERR("%s: Unsupported Intel hardware variant (%u)",
2037                        hdev->name, ver->hw_variant);
2038                 kfree_skb(skb);
2039                 return -EINVAL;
2040         }
2041
2042         btusb_intel_version_info(hdev, ver);
2043
2044         /* The firmware variant determines if the device is in bootloader
2045          * mode or is running operational firmware. The value 0x06 identifies
2046          * the bootloader and the value 0x23 identifies the operational
2047          * firmware.
2048          *
2049          * When the operational firmware is already present, then only
2050          * the check for valid Bluetooth device address is needed. This
2051          * determines if the device will be added as configured or
2052          * unconfigured controller.
2053          *
2054          * It is not possible to use the Secure Boot Parameters in this
2055          * case since that command is only available in bootloader mode.
2056          */
2057         if (ver->fw_variant == 0x23) {
2058                 kfree_skb(skb);
2059                 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2060                 btusb_check_bdaddr_intel(hdev);
2061                 return 0;
2062         }
2063
2064         /* If the device is not in bootloader mode, then the only possible
2065          * choice is to return an error and abort the device initialization.
2066          */
2067         if (ver->fw_variant != 0x06) {
2068                 BT_ERR("%s: Unsupported Intel firmware variant (%u)",
2069                        hdev->name, ver->fw_variant);
2070                 kfree_skb(skb);
2071                 return -ENODEV;
2072         }
2073
2074         kfree_skb(skb);
2075
2076         /* Read the secure boot parameters to identify the operating
2077          * details of the bootloader.
2078          */
2079         skb = __hci_cmd_sync(hdev, 0xfc0d, 0, NULL, HCI_INIT_TIMEOUT);
2080         if (IS_ERR(skb)) {
2081                 BT_ERR("%s: Reading Intel boot parameters failed (%ld)",
2082                        hdev->name, PTR_ERR(skb));
2083                 return PTR_ERR(skb);
2084         }
2085
2086         if (skb->len != sizeof(*params)) {
2087                 BT_ERR("%s: Intel boot parameters size mismatch", hdev->name);
2088                 kfree_skb(skb);
2089                 return -EILSEQ;
2090         }
2091
2092         params = (struct intel_boot_params *)skb->data;
2093         if (params->status) {
2094                 BT_ERR("%s: Intel boot parameters command failure (%02x)",
2095                        hdev->name, params->status);
2096                 err = -bt_to_errno(params->status);
2097                 kfree_skb(skb);
2098                 return err;
2099         }
2100
2101         BT_INFO("%s: Device revision is %u", hdev->name,
2102                 le16_to_cpu(params->dev_revid));
2103
2104         BT_INFO("%s: Secure boot is %s", hdev->name,
2105                 params->secure_boot ? "enabled" : "disabled");
2106
2107         BT_INFO("%s: Minimum firmware build %u week %u %u", hdev->name,
2108                 params->min_fw_build_nn, params->min_fw_build_cw,
2109                 2000 + params->min_fw_build_yy);
2110
2111         /* It is required that every single firmware fragment is acknowledged
2112          * with a command complete event. If the boot parameters indicate
2113          * that this bootloader does not send them, then abort the setup.
2114          */
2115         if (params->limited_cce != 0x00) {
2116                 BT_ERR("%s: Unsupported Intel firmware loading method (%u)",
2117                        hdev->name, params->limited_cce);
2118                 kfree_skb(skb);
2119                 return -EINVAL;
2120         }
2121
2122         /* If the OTP has no valid Bluetooth device address, then there will
2123          * also be no valid address for the operational firmware.
2124          */
2125         if (!bacmp(&params->otp_bdaddr, BDADDR_ANY)) {
2126                 BT_INFO("%s: No device address configured", hdev->name);
2127                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2128         }
2129
2130         /* With this Intel bootloader only the hardware variant and device
2131          * revision information are used to select the right firmware.
2132          *
2133          * Currently this bootloader support is limited to hardware variant
2134          * iBT 3.0 (LnP/SfP) which is identified by the value 11 (0x0b).
2135          */
2136         snprintf(fwname, sizeof(fwname), "intel/ibt-11-%u.sfi",
2137                  le16_to_cpu(params->dev_revid));
2138
2139         err = request_firmware(&fw, fwname, &hdev->dev);
2140         if (err < 0) {
2141                 BT_ERR("%s: Failed to load Intel firmware file (%d)",
2142                        hdev->name, err);
2143                 kfree_skb(skb);
2144                 return err;
2145         }
2146
2147         BT_INFO("%s: Found device firmware: %s", hdev->name, fwname);
2148
2149         kfree_skb(skb);
2150
2151         if (fw->size < 644) {
2152                 BT_ERR("%s: Invalid size of firmware file (%zu)",
2153                        hdev->name, fw->size);
2154                 err = -EBADF;
2155                 goto done;
2156         }
2157
2158         set_bit(BTUSB_DOWNLOADING, &data->flags);
2159
2160         /* Start the firmware download transaction with the Init fragment
2161          * represented by the 128 bytes of CSS header.
2162          */
2163         err = btusb_intel_secure_send(hdev, 0x00, 128, fw->data);
2164         if (err < 0) {
2165                 BT_ERR("%s: Failed to send firmware header (%d)",
2166                        hdev->name, err);
2167                 goto done;
2168         }
2169
2170         /* Send the 256 bytes of public key information from the firmware
2171          * as the PKey fragment.
2172          */
2173         err = btusb_intel_secure_send(hdev, 0x03, 256, fw->data + 128);
2174         if (err < 0) {
2175                 BT_ERR("%s: Failed to send firmware public key (%d)",
2176                        hdev->name, err);
2177                 goto done;
2178         }
2179
2180         /* Send the 256 bytes of signature information from the firmware
2181          * as the Sign fragment.
2182          */
2183         err = btusb_intel_secure_send(hdev, 0x02, 256, fw->data + 388);
2184         if (err < 0) {
2185                 BT_ERR("%s: Failed to send firmware signature (%d)",
2186                        hdev->name, err);
2187                 goto done;
2188         }
2189
2190         fw_ptr = fw->data + 644;
2191
2192         while (fw_ptr - fw->data < fw->size) {
2193                 struct hci_command_hdr *cmd = (void *)fw_ptr;
2194                 u8 cmd_len;
2195
2196                 cmd_len = sizeof(*cmd) + cmd->plen;
2197
2198                 /* Send each command from the firmware data buffer as
2199                  * a single Data fragment.
2200                  */
2201                 err = btusb_intel_secure_send(hdev, 0x01, cmd_len, fw_ptr);
2202                 if (err < 0) {
2203                         BT_ERR("%s: Failed to send firmware data (%d)",
2204                                hdev->name, err);
2205                         goto done;
2206                 }
2207
2208                 fw_ptr += cmd_len;
2209         }
2210
2211         set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2212
2213         BT_INFO("%s: Waiting for firmware download to complete", hdev->name);
2214
2215         /* Before switching the device into operational mode and with that
2216          * booting the loaded firmware, wait for the bootloader notification
2217          * that all fragments have been successfully received.
2218          *
2219          * When the event processing receives the notification, then the
2220          * BTUSB_DOWNLOADING flag will be cleared.
2221          *
2222          * The firmware loading should not take longer than 5 seconds
2223          * and thus just timeout if that happens and fail the setup
2224          * of this device.
2225          */
2226         err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
2227                                   TASK_INTERRUPTIBLE,
2228                                   msecs_to_jiffies(5000));
2229         if (err == 1) {
2230                 BT_ERR("%s: Firmware loading interrupted", hdev->name);
2231                 err = -EINTR;
2232                 goto done;
2233         }
2234
2235         if (err) {
2236                 BT_ERR("%s: Firmware loading timeout", hdev->name);
2237                 err = -ETIMEDOUT;
2238                 goto done;
2239         }
2240
2241         if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) {
2242                 BT_ERR("%s: Firmware loading failed", hdev->name);
2243                 err = -ENOEXEC;
2244                 goto done;
2245         }
2246
2247         rettime = ktime_get();
2248         delta = ktime_sub(rettime, calltime);
2249         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2250
2251         BT_INFO("%s: Firmware loaded in %llu usecs", hdev->name, duration);
2252
2253 done:
2254         release_firmware(fw);
2255
2256         if (err < 0)
2257                 return err;
2258
2259         calltime = ktime_get();
2260
2261         set_bit(BTUSB_BOOTING, &data->flags);
2262
2263         skb = __hci_cmd_sync(hdev, 0xfc01, sizeof(reset_param), reset_param,
2264                              HCI_INIT_TIMEOUT);
2265         if (IS_ERR(skb))
2266                 return PTR_ERR(skb);
2267
2268         kfree_skb(skb);
2269
2270         /* The bootloader will not indicate when the device is ready. This
2271          * is done by the operational firmware sending bootup notification.
2272          *
2273          * Booting into operational firmware should not take longer than
2274          * 1 second. However if that happens, then just fail the setup
2275          * since something went wrong.
2276          */
2277         BT_INFO("%s: Waiting for device to boot", hdev->name);
2278
2279         err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING,
2280                                   TASK_INTERRUPTIBLE,
2281                                   msecs_to_jiffies(1000));
2282
2283         if (err == 1) {
2284                 BT_ERR("%s: Device boot interrupted", hdev->name);
2285                 return -EINTR;
2286         }
2287
2288         if (err) {
2289                 BT_ERR("%s: Device boot timeout", hdev->name);
2290                 return -ETIMEDOUT;
2291         }
2292
2293         rettime = ktime_get();
2294         delta = ktime_sub(rettime, calltime);
2295         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2296
2297         BT_INFO("%s: Device booted in %llu usecs", hdev->name, duration);
2298
2299         clear_bit(BTUSB_BOOTLOADER, &data->flags);
2300
2301         return 0;
2302 }
2303
2304 static void btusb_hw_error_intel(struct hci_dev *hdev, u8 code)
2305 {
2306         struct sk_buff *skb;
2307         u8 type = 0x00;
2308
2309         BT_ERR("%s: Hardware error 0x%2.2x", hdev->name, code);
2310
2311         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2312         if (IS_ERR(skb)) {
2313                 BT_ERR("%s: Reset after hardware error failed (%ld)",
2314                        hdev->name, PTR_ERR(skb));
2315                 return;
2316         }
2317         kfree_skb(skb);
2318
2319         skb = __hci_cmd_sync(hdev, 0xfc22, 1, &type, HCI_INIT_TIMEOUT);
2320         if (IS_ERR(skb)) {
2321                 BT_ERR("%s: Retrieving Intel exception info failed (%ld)",
2322                        hdev->name, PTR_ERR(skb));
2323                 return;
2324         }
2325
2326         if (skb->len != 13) {
2327                 BT_ERR("%s: Exception info size mismatch", hdev->name);
2328                 kfree_skb(skb);
2329                 return;
2330         }
2331
2332         if (skb->data[0] != 0x00) {
2333                 BT_ERR("%s: Exception info command failure (%02x)",
2334                        hdev->name, skb->data[0]);
2335                 kfree_skb(skb);
2336                 return;
2337         }
2338
2339         BT_ERR("%s: Exception info %s", hdev->name, (char *)(skb->data + 1));
2340
2341         kfree_skb(skb);
2342 }
2343
2344 static int btusb_set_bdaddr_intel(struct hci_dev *hdev, const bdaddr_t *bdaddr)
2345 {
2346         struct sk_buff *skb;
2347         long ret;
2348
2349         skb = __hci_cmd_sync(hdev, 0xfc31, 6, bdaddr, HCI_INIT_TIMEOUT);
2350         if (IS_ERR(skb)) {
2351                 ret = PTR_ERR(skb);
2352                 BT_ERR("%s: changing Intel device address failed (%ld)",
2353                        hdev->name, ret);
2354                 return ret;
2355         }
2356         kfree_skb(skb);
2357
2358         return 0;
2359 }
2360
2361 static int btusb_shutdown_intel(struct hci_dev *hdev)
2362 {
2363         struct sk_buff *skb;
2364         long ret;
2365
2366         /* Some platforms have an issue with BT LED when the interface is
2367          * down or BT radio is turned off, which takes 5 seconds to BT LED
2368          * goes off. This command turns off the BT LED immediately.
2369          */
2370         skb = __hci_cmd_sync(hdev, 0xfc3f, 0, NULL, HCI_INIT_TIMEOUT);
2371         if (IS_ERR(skb)) {
2372                 ret = PTR_ERR(skb);
2373                 BT_ERR("%s: turning off Intel device LED failed (%ld)",
2374                        hdev->name, ret);
2375                 return ret;
2376         }
2377         kfree_skb(skb);
2378
2379         return 0;
2380 }
2381
2382 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
2383                                     const bdaddr_t *bdaddr)
2384 {
2385         struct sk_buff *skb;
2386         u8 buf[8];
2387         long ret;
2388
2389         buf[0] = 0xfe;
2390         buf[1] = sizeof(bdaddr_t);
2391         memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
2392
2393         skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2394         if (IS_ERR(skb)) {
2395                 ret = PTR_ERR(skb);
2396                 BT_ERR("%s: changing Marvell device address failed (%ld)",
2397                        hdev->name, ret);
2398                 return ret;
2399         }
2400         kfree_skb(skb);
2401
2402         return 0;
2403 }
2404
2405 static const struct {
2406         u16 subver;
2407         const char *name;
2408 } bcm_subver_table[] = {
2409         { 0x210b, "BCM43142A0"  },      /* 001.001.011 */
2410         { 0x2112, "BCM4314A0"   },      /* 001.001.018 */
2411         { 0x2118, "BCM20702A0"  },      /* 001.001.024 */
2412         { 0x2126, "BCM4335A0"   },      /* 001.001.038 */
2413         { 0x220e, "BCM20702A1"  },      /* 001.002.014 */
2414         { 0x230f, "BCM4354A2"   },      /* 001.003.015 */
2415         { 0x4106, "BCM4335B0"   },      /* 002.001.006 */
2416         { 0x410e, "BCM20702B0"  },      /* 002.001.014 */
2417         { 0x6109, "BCM4335C0"   },      /* 003.001.009 */
2418         { 0x610c, "BCM4354"     },      /* 003.001.012 */
2419         { }
2420 };
2421
2422 #define BDADDR_BCM20702A0 (&(bdaddr_t) {{0x00, 0xa0, 0x02, 0x70, 0x20, 0x00}})
2423
2424 static int btusb_setup_bcm_patchram(struct hci_dev *hdev)
2425 {
2426         struct btusb_data *data = hci_get_drvdata(hdev);
2427         struct usb_device *udev = data->udev;
2428         char fw_name[64];
2429         const struct firmware *fw;
2430         const u8 *fw_ptr;
2431         size_t fw_size;
2432         const struct hci_command_hdr *cmd;
2433         const u8 *cmd_param;
2434         u16 opcode, subver, rev;
2435         const char *hw_name = NULL;
2436         struct sk_buff *skb;
2437         struct hci_rp_read_local_version *ver;
2438         struct hci_rp_read_bd_addr *bda;
2439         long ret;
2440         int i;
2441
2442         /* Reset */
2443         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2444         if (IS_ERR(skb)) {
2445                 ret = PTR_ERR(skb);
2446                 BT_ERR("%s: HCI_OP_RESET failed (%ld)", hdev->name, ret);
2447                 return ret;
2448         }
2449         kfree_skb(skb);
2450
2451         /* Read Local Version Info */
2452         skb = btusb_read_local_version(hdev);
2453         if (IS_ERR(skb))
2454                 return PTR_ERR(skb);
2455
2456         ver = (struct hci_rp_read_local_version *)skb->data;
2457         rev = le16_to_cpu(ver->hci_rev);
2458         subver = le16_to_cpu(ver->lmp_subver);
2459         kfree_skb(skb);
2460
2461         for (i = 0; bcm_subver_table[i].name; i++) {
2462                 if (subver == bcm_subver_table[i].subver) {
2463                         hw_name = bcm_subver_table[i].name;
2464                         break;
2465                 }
2466         }
2467
2468         BT_INFO("%s: %s (%3.3u.%3.3u.%3.3u) build %4.4u", hdev->name,
2469                 hw_name ? : "BCM", (subver & 0x7000) >> 13,
2470                 (subver & 0x1f00) >> 8, (subver & 0x00ff), rev & 0x0fff);
2471
2472         snprintf(fw_name, sizeof(fw_name), "brcm/%s-%4.4x-%4.4x.hcd",
2473                  hw_name ? : "BCM",
2474                  le16_to_cpu(udev->descriptor.idVendor),
2475                  le16_to_cpu(udev->descriptor.idProduct));
2476
2477         ret = request_firmware(&fw, fw_name, &hdev->dev);
2478         if (ret < 0) {
2479                 BT_INFO("%s: BCM: patch %s not found", hdev->name, fw_name);
2480                 return 0;
2481         }
2482
2483         /* Start Download */
2484         skb = __hci_cmd_sync(hdev, 0xfc2e, 0, NULL, HCI_INIT_TIMEOUT);
2485         if (IS_ERR(skb)) {
2486                 ret = PTR_ERR(skb);
2487                 BT_ERR("%s: BCM: Download Minidrv command failed (%ld)",
2488                        hdev->name, ret);
2489                 goto reset_fw;
2490         }
2491         kfree_skb(skb);
2492
2493         /* 50 msec delay after Download Minidrv completes */
2494         msleep(50);
2495
2496         fw_ptr = fw->data;
2497         fw_size = fw->size;
2498
2499         while (fw_size >= sizeof(*cmd)) {
2500                 cmd = (struct hci_command_hdr *)fw_ptr;
2501                 fw_ptr += sizeof(*cmd);
2502                 fw_size -= sizeof(*cmd);
2503
2504                 if (fw_size < cmd->plen) {
2505                         BT_ERR("%s: BCM: patch %s is corrupted",
2506                                hdev->name, fw_name);
2507                         ret = -EINVAL;
2508                         goto reset_fw;
2509                 }
2510
2511                 cmd_param = fw_ptr;
2512                 fw_ptr += cmd->plen;
2513                 fw_size -= cmd->plen;
2514
2515                 opcode = le16_to_cpu(cmd->opcode);
2516
2517                 skb = __hci_cmd_sync(hdev, opcode, cmd->plen, cmd_param,
2518                                      HCI_INIT_TIMEOUT);
2519                 if (IS_ERR(skb)) {
2520                         ret = PTR_ERR(skb);
2521                         BT_ERR("%s: BCM: patch command %04x failed (%ld)",
2522                                hdev->name, opcode, ret);
2523                         goto reset_fw;
2524                 }
2525                 kfree_skb(skb);
2526         }
2527
2528         /* 250 msec delay after Launch Ram completes */
2529         msleep(250);
2530
2531 reset_fw:
2532         /* Reset */
2533         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2534         if (IS_ERR(skb)) {
2535                 ret = PTR_ERR(skb);
2536                 BT_ERR("%s: HCI_OP_RESET failed (%ld)", hdev->name, ret);
2537                 goto done;
2538         }
2539         kfree_skb(skb);
2540
2541         /* Read Local Version Info */
2542         skb = btusb_read_local_version(hdev);
2543         if (IS_ERR(skb)) {
2544                 ret = PTR_ERR(skb);
2545                 goto done;
2546         }
2547
2548         ver = (struct hci_rp_read_local_version *)skb->data;
2549         rev = le16_to_cpu(ver->hci_rev);
2550         subver = le16_to_cpu(ver->lmp_subver);
2551         kfree_skb(skb);
2552
2553         BT_INFO("%s: %s (%3.3u.%3.3u.%3.3u) build %4.4u", hdev->name,
2554                 hw_name ? : "BCM", (subver & 0x7000) >> 13,
2555                 (subver & 0x1f00) >> 8, (subver & 0x00ff), rev & 0x0fff);
2556
2557         /* Read BD Address */
2558         skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
2559                              HCI_INIT_TIMEOUT);
2560         if (IS_ERR(skb)) {
2561                 ret = PTR_ERR(skb);
2562                 BT_ERR("%s: HCI_OP_READ_BD_ADDR failed (%ld)",
2563                        hdev->name, ret);
2564                 goto done;
2565         }
2566
2567         if (skb->len != sizeof(*bda)) {
2568                 BT_ERR("%s: HCI_OP_READ_BD_ADDR event length mismatch",
2569                        hdev->name);
2570                 kfree_skb(skb);
2571                 ret = -EIO;
2572                 goto done;
2573         }
2574
2575         bda = (struct hci_rp_read_bd_addr *)skb->data;
2576         if (bda->status) {
2577                 BT_ERR("%s: HCI_OP_READ_BD_ADDR error status (%02x)",
2578                        hdev->name, bda->status);
2579                 kfree_skb(skb);
2580                 ret = -bt_to_errno(bda->status);
2581                 goto done;
2582         }
2583
2584         /* The address 00:20:70:02:A0:00 indicates a BCM20702A0 controller
2585          * with no configured address.
2586          */
2587         if (!bacmp(&bda->bdaddr, BDADDR_BCM20702A0)) {
2588                 BT_INFO("%s: BCM: using default device address (%pMR)",
2589                         hdev->name, &bda->bdaddr);
2590                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2591         }
2592
2593         kfree_skb(skb);
2594
2595 done:
2596         release_firmware(fw);
2597
2598         return ret;
2599 }
2600
2601 static int btusb_set_bdaddr_bcm(struct hci_dev *hdev, const bdaddr_t *bdaddr)
2602 {
2603         struct sk_buff *skb;
2604         long ret;
2605
2606         skb = __hci_cmd_sync(hdev, 0xfc01, 6, bdaddr, HCI_INIT_TIMEOUT);
2607         if (IS_ERR(skb)) {
2608                 ret = PTR_ERR(skb);
2609                 BT_ERR("%s: BCM: Change address command failed (%ld)",
2610                        hdev->name, ret);
2611                 return ret;
2612         }
2613         kfree_skb(skb);
2614
2615         return 0;
2616 }
2617
2618 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
2619                                     const bdaddr_t *bdaddr)
2620 {
2621         struct sk_buff *skb;
2622         u8 buf[10];
2623         long ret;
2624
2625         buf[0] = 0x01;
2626         buf[1] = 0x01;
2627         buf[2] = 0x00;
2628         buf[3] = sizeof(bdaddr_t);
2629         memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
2630
2631         skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2632         if (IS_ERR(skb)) {
2633                 ret = PTR_ERR(skb);
2634                 BT_ERR("%s: Change address command failed (%ld)",
2635                        hdev->name, ret);
2636                 return ret;
2637         }
2638         kfree_skb(skb);
2639
2640         return 0;
2641 }
2642
2643 #define QCA_DFU_PACKET_LEN      4096
2644
2645 #define QCA_GET_TARGET_VERSION  0x09
2646 #define QCA_CHECK_STATUS        0x05
2647 #define QCA_DFU_DOWNLOAD        0x01
2648
2649 #define QCA_SYSCFG_UPDATED      0x40
2650 #define QCA_PATCH_UPDATED       0x80
2651 #define QCA_DFU_TIMEOUT         3000
2652
2653 struct qca_version {
2654         __le32  rom_version;
2655         __le32  patch_version;
2656         __le32  ram_version;
2657         __le32  ref_clock;
2658         __u8    reserved[4];
2659 } __packed;
2660
2661 struct qca_rampatch_version {
2662         __le16  rom_version;
2663         __le16  patch_version;
2664 } __packed;
2665
2666 struct qca_device_info {
2667         u32     rom_version;
2668         u8      rampatch_hdr;   /* length of header in rampatch */
2669         u8      nvm_hdr;        /* length of header in NVM */
2670         u8      ver_offset;     /* offset of version structure in rampatch */
2671 };
2672
2673 static const struct qca_device_info qca_devices_table[] = {
2674         { 0x00000100, 20, 4, 10 }, /* Rome 1.0 */
2675         { 0x00000101, 20, 4, 10 }, /* Rome 1.1 */
2676         { 0x00000201, 28, 4, 18 }, /* Rome 2.1 */
2677         { 0x00000300, 28, 4, 18 }, /* Rome 3.0 */
2678         { 0x00000302, 28, 4, 18 }, /* Rome 3.2 */
2679 };
2680
2681 static int btusb_qca_send_vendor_req(struct hci_dev *hdev, u8 request,
2682                                      void *data, u16 size)
2683 {
2684         struct btusb_data *btdata = hci_get_drvdata(hdev);
2685         struct usb_device *udev = btdata->udev;
2686         int pipe, err;
2687         u8 *buf;
2688
2689         buf = kmalloc(size, GFP_KERNEL);
2690         if (!buf)
2691                 return -ENOMEM;
2692
2693         /* Found some of USB hosts have IOT issues with ours so that we should
2694          * not wait until HCI layer is ready.
2695          */
2696         pipe = usb_rcvctrlpipe(udev, 0);
2697         err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
2698                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2699         if (err < 0) {
2700                 BT_ERR("%s: Failed to access otp area (%d)", hdev->name, err);
2701                 goto done;
2702         }
2703
2704         memcpy(data, buf, size);
2705
2706 done:
2707         kfree(buf);
2708
2709         return err;
2710 }
2711
2712 static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
2713                                        const struct firmware *firmware,
2714                                        size_t hdr_size)
2715 {
2716         struct btusb_data *btdata = hci_get_drvdata(hdev);
2717         struct usb_device *udev = btdata->udev;
2718         size_t count, size, sent = 0;
2719         int pipe, len, err;
2720         u8 *buf;
2721
2722         buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
2723         if (!buf)
2724                 return -ENOMEM;
2725
2726         count = firmware->size;
2727
2728         size = min_t(size_t, count, hdr_size);
2729         memcpy(buf, firmware->data, size);
2730
2731         /* USB patches should go down to controller through USB path
2732          * because binary format fits to go down through USB channel.
2733          * USB control path is for patching headers and USB bulk is for
2734          * patch body.
2735          */
2736         pipe = usb_sndctrlpipe(udev, 0);
2737         err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
2738                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2739         if (err < 0) {
2740                 BT_ERR("%s: Failed to send headers (%d)", hdev->name, err);
2741                 goto done;
2742         }
2743
2744         sent += size;
2745         count -= size;
2746
2747         while (count) {
2748                 size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
2749
2750                 memcpy(buf, firmware->data + sent, size);
2751
2752                 pipe = usb_sndbulkpipe(udev, 0x02);
2753                 err = usb_bulk_msg(udev, pipe, buf, size, &len,
2754                                    QCA_DFU_TIMEOUT);
2755                 if (err < 0) {
2756                         BT_ERR("%s: Failed to send body at %zd of %zd (%d)",
2757                                hdev->name, sent, firmware->size, err);
2758                         break;
2759                 }
2760
2761                 if (size != len) {
2762                         BT_ERR("%s: Failed to get bulk buffer", hdev->name);
2763                         err = -EILSEQ;
2764                         break;
2765                 }
2766
2767                 sent  += size;
2768                 count -= size;
2769         }
2770
2771 done:
2772         kfree(buf);
2773         return err;
2774 }
2775
2776 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
2777                                          struct qca_version *ver,
2778                                          const struct qca_device_info *info)
2779 {
2780         struct qca_rampatch_version *rver;
2781         const struct firmware *fw;
2782         u32 ver_rom, ver_patch;
2783         u16 rver_rom, rver_patch;
2784         char fwname[64];
2785         int err;
2786
2787         ver_rom = le32_to_cpu(ver->rom_version);
2788         ver_patch = le32_to_cpu(ver->patch_version);
2789
2790         snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom);
2791
2792         err = request_firmware(&fw, fwname, &hdev->dev);
2793         if (err) {
2794                 BT_ERR("%s: failed to request rampatch file: %s (%d)",
2795                        hdev->name, fwname, err);
2796                 return err;
2797         }
2798
2799         BT_INFO("%s: using rampatch file: %s", hdev->name, fwname);
2800
2801         rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
2802         rver_rom = le16_to_cpu(rver->rom_version);
2803         rver_patch = le16_to_cpu(rver->patch_version);
2804
2805         BT_INFO("%s: QCA: patch rome 0x%x build 0x%x, firmware rome 0x%x "
2806                 "build 0x%x", hdev->name, rver_rom, rver_patch, ver_rom,
2807                 ver_patch);
2808
2809         if (rver_rom != ver_rom || rver_patch <= ver_patch) {
2810                 BT_ERR("%s: rampatch file version did not match with firmware",
2811                        hdev->name);
2812                 err = -EINVAL;
2813                 goto done;
2814         }
2815
2816         err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
2817
2818 done:
2819         release_firmware(fw);
2820
2821         return err;
2822 }
2823
2824 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
2825                                     struct qca_version *ver,
2826                                     const struct qca_device_info *info)
2827 {
2828         const struct firmware *fw;
2829         char fwname[64];
2830         int err;
2831
2832         snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x.bin",
2833                  le32_to_cpu(ver->rom_version));
2834
2835         err = request_firmware(&fw, fwname, &hdev->dev);
2836         if (err) {
2837                 BT_ERR("%s: failed to request NVM file: %s (%d)",
2838                        hdev->name, fwname, err);
2839                 return err;
2840         }
2841
2842         BT_INFO("%s: using NVM file: %s", hdev->name, fwname);
2843
2844         err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
2845
2846         release_firmware(fw);
2847
2848         return err;
2849 }
2850
2851 static int btusb_setup_qca(struct hci_dev *hdev)
2852 {
2853         const struct qca_device_info *info = NULL;
2854         struct qca_version ver;
2855         u32 ver_rom;
2856         u8 status;
2857         int i, err;
2858
2859         err = btusb_qca_send_vendor_req(hdev, QCA_GET_TARGET_VERSION, &ver,
2860                                         sizeof(ver));
2861         if (err < 0)
2862                 return err;
2863
2864         ver_rom = le32_to_cpu(ver.rom_version);
2865         for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
2866                 if (ver_rom == qca_devices_table[i].rom_version)
2867                         info = &qca_devices_table[i];
2868         }
2869         if (!info) {
2870                 BT_ERR("%s: don't support firmware rome 0x%x", hdev->name,
2871                        ver_rom);
2872                 return -ENODEV;
2873         }
2874
2875         err = btusb_qca_send_vendor_req(hdev, QCA_CHECK_STATUS, &status,
2876                                         sizeof(status));
2877         if (err < 0)
2878                 return err;
2879
2880         if (!(status & QCA_PATCH_UPDATED)) {
2881                 err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
2882                 if (err < 0)
2883                         return err;
2884         }
2885
2886         if (!(status & QCA_SYSCFG_UPDATED)) {
2887                 err = btusb_setup_qca_load_nvm(hdev, &ver, info);
2888                 if (err < 0)
2889                         return err;
2890         }
2891
2892         return 0;
2893 }
2894
2895 static int btusb_probe(struct usb_interface *intf,
2896                        const struct usb_device_id *id)
2897 {
2898         struct usb_endpoint_descriptor *ep_desc;
2899         struct btusb_data *data;
2900         struct hci_dev *hdev;
2901         int i, err;
2902
2903         BT_DBG("intf %p id %p", intf, id);
2904
2905         /* interface numbers are hardcoded in the spec */
2906         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
2907                 return -ENODEV;
2908
2909         if (!id->driver_info) {
2910                 const struct usb_device_id *match;
2911
2912                 match = usb_match_id(intf, blacklist_table);
2913                 if (match)
2914                         id = match;
2915         }
2916
2917         if (id->driver_info == BTUSB_IGNORE)
2918                 return -ENODEV;
2919
2920         if (id->driver_info & BTUSB_ATH3012) {
2921                 struct usb_device *udev = interface_to_usbdev(intf);
2922
2923                 /* Old firmware would otherwise let ath3k driver load
2924                  * patch and sysconfig files */
2925                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
2926                         return -ENODEV;
2927         }
2928
2929         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
2930         if (!data)
2931                 return -ENOMEM;
2932
2933         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2934                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2935
2936                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
2937                         data->intr_ep = ep_desc;
2938                         continue;
2939                 }
2940
2941                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
2942                         data->bulk_tx_ep = ep_desc;
2943                         continue;
2944                 }
2945
2946                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
2947                         data->bulk_rx_ep = ep_desc;
2948                         continue;
2949                 }
2950         }
2951
2952         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
2953                 return -ENODEV;
2954
2955         if (id->driver_info & BTUSB_AMP) {
2956                 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
2957                 data->cmdreq = 0x2b;
2958         } else {
2959                 data->cmdreq_type = USB_TYPE_CLASS;
2960                 data->cmdreq = 0x00;
2961         }
2962
2963         data->udev = interface_to_usbdev(intf);
2964         data->intf = intf;
2965
2966         INIT_WORK(&data->work, btusb_work);
2967         INIT_WORK(&data->waker, btusb_waker);
2968         init_usb_anchor(&data->deferred);
2969         init_usb_anchor(&data->tx_anchor);
2970         spin_lock_init(&data->txlock);
2971
2972         init_usb_anchor(&data->intr_anchor);
2973         init_usb_anchor(&data->bulk_anchor);
2974         init_usb_anchor(&data->isoc_anchor);
2975         spin_lock_init(&data->rxlock);
2976
2977         if (id->driver_info & BTUSB_INTEL_NEW) {
2978                 data->recv_event = btusb_recv_event_intel;
2979                 data->recv_bulk = btusb_recv_bulk_intel;
2980                 set_bit(BTUSB_BOOTLOADER, &data->flags);
2981         } else {
2982                 data->recv_event = hci_recv_frame;
2983                 data->recv_bulk = btusb_recv_bulk;
2984         }
2985
2986         hdev = hci_alloc_dev();
2987         if (!hdev)
2988                 return -ENOMEM;
2989
2990         hdev->bus = HCI_USB;
2991         hci_set_drvdata(hdev, data);
2992
2993         if (id->driver_info & BTUSB_AMP)
2994                 hdev->dev_type = HCI_AMP;
2995         else
2996                 hdev->dev_type = HCI_BREDR;
2997
2998         data->hdev = hdev;
2999
3000         SET_HCIDEV_DEV(hdev, &intf->dev);
3001
3002         hdev->open   = btusb_open;
3003         hdev->close  = btusb_close;
3004         hdev->flush  = btusb_flush;
3005         hdev->send   = btusb_send_frame;
3006         hdev->notify = btusb_notify;
3007
3008         if (id->driver_info & BTUSB_BCM92035)
3009                 hdev->setup = btusb_setup_bcm92035;
3010
3011         if (id->driver_info & BTUSB_BCM_PATCHRAM) {
3012                 hdev->setup = btusb_setup_bcm_patchram;
3013                 hdev->set_bdaddr = btusb_set_bdaddr_bcm;
3014                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3015         }
3016
3017         if (id->driver_info & BTUSB_INTEL) {
3018                 hdev->setup = btusb_setup_intel;
3019                 hdev->shutdown = btusb_shutdown_intel;
3020                 hdev->set_bdaddr = btusb_set_bdaddr_intel;
3021                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3022         }
3023
3024         if (id->driver_info & BTUSB_INTEL_NEW) {
3025                 hdev->send = btusb_send_frame_intel;
3026                 hdev->setup = btusb_setup_intel_new;
3027                 hdev->hw_error = btusb_hw_error_intel;
3028                 hdev->set_bdaddr = btusb_set_bdaddr_intel;
3029                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3030         }
3031
3032         if (id->driver_info & BTUSB_MARVELL)
3033                 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
3034
3035         if (id->driver_info & BTUSB_SWAVE) {
3036                 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
3037                 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
3038         }
3039
3040         if (id->driver_info & BTUSB_INTEL_BOOT)
3041                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3042
3043         if (id->driver_info & BTUSB_ATH3012) {
3044                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
3045                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3046         }
3047
3048         if (id->driver_info & BTUSB_QCA_ROME) {
3049                 data->setup_on_usb = btusb_setup_qca;
3050                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
3051         }
3052
3053         if (id->driver_info & BTUSB_AMP) {
3054                 /* AMP controllers do not support SCO packets */
3055                 data->isoc = NULL;
3056         } else {
3057                 /* Interface numbers are hardcoded in the specification */
3058                 data->isoc = usb_ifnum_to_if(data->udev, 1);
3059         }
3060
3061         if (!reset)
3062                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3063
3064         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
3065                 if (!disable_scofix)
3066                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
3067         }
3068
3069         if (id->driver_info & BTUSB_BROKEN_ISOC)
3070                 data->isoc = NULL;
3071
3072         if (id->driver_info & BTUSB_DIGIANSWER) {
3073                 data->cmdreq_type = USB_TYPE_VENDOR;
3074                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3075         }
3076
3077         if (id->driver_info & BTUSB_CSR) {
3078                 struct usb_device *udev = data->udev;
3079                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
3080
3081                 /* Old firmware would otherwise execute USB reset */
3082                 if (bcdDevice < 0x117)
3083                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3084
3085                 /* Fake CSR devices with broken commands */
3086                 if (bcdDevice <= 0x100)
3087                         hdev->setup = btusb_setup_csr;
3088         }
3089
3090         if (id->driver_info & BTUSB_SNIFFER) {
3091                 struct usb_device *udev = data->udev;
3092
3093                 /* New sniffer firmware has crippled HCI interface */
3094                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
3095                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3096         }
3097
3098         if (id->driver_info & BTUSB_INTEL_BOOT) {
3099                 /* A bug in the bootloader causes that interrupt interface is
3100                  * only enabled after receiving SetInterface(0, AltSetting=0).
3101                  */
3102                 err = usb_set_interface(data->udev, 0, 0);
3103                 if (err < 0) {
3104                         BT_ERR("failed to set interface 0, alt 0 %d", err);
3105                         hci_free_dev(hdev);
3106                         return err;
3107                 }
3108         }
3109
3110         if (data->isoc) {
3111                 err = usb_driver_claim_interface(&btusb_driver,
3112                                                  data->isoc, data);
3113                 if (err < 0) {
3114                         hci_free_dev(hdev);
3115                         return err;
3116                 }
3117         }
3118
3119         err = hci_register_dev(hdev);
3120         if (err < 0) {
3121                 hci_free_dev(hdev);
3122                 return err;
3123         }
3124
3125         usb_set_intfdata(intf, data);
3126
3127         return 0;
3128 }
3129
3130 static void btusb_disconnect(struct usb_interface *intf)
3131 {
3132         struct btusb_data *data = usb_get_intfdata(intf);
3133         struct hci_dev *hdev;
3134
3135         BT_DBG("intf %p", intf);
3136
3137         if (!data)
3138                 return;
3139
3140         hdev = data->hdev;
3141         usb_set_intfdata(data->intf, NULL);
3142
3143         if (data->isoc)
3144                 usb_set_intfdata(data->isoc, NULL);
3145
3146         hci_unregister_dev(hdev);
3147
3148         if (intf == data->isoc)
3149                 usb_driver_release_interface(&btusb_driver, data->intf);
3150         else if (data->isoc)
3151                 usb_driver_release_interface(&btusb_driver, data->isoc);
3152
3153         hci_free_dev(hdev);
3154 }
3155
3156 #ifdef CONFIG_PM
3157 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
3158 {
3159         struct btusb_data *data = usb_get_intfdata(intf);
3160
3161         BT_DBG("intf %p", intf);
3162
3163         if (data->suspend_count++)
3164                 return 0;
3165
3166         spin_lock_irq(&data->txlock);
3167         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
3168                 set_bit(BTUSB_SUSPENDING, &data->flags);
3169                 spin_unlock_irq(&data->txlock);
3170         } else {
3171                 spin_unlock_irq(&data->txlock);
3172                 data->suspend_count--;
3173                 return -EBUSY;
3174         }
3175
3176         cancel_work_sync(&data->work);
3177
3178         btusb_stop_traffic(data);
3179         usb_kill_anchored_urbs(&data->tx_anchor);
3180
3181         return 0;
3182 }
3183
3184 static void play_deferred(struct btusb_data *data)
3185 {
3186         struct urb *urb;
3187         int err;
3188
3189         while ((urb = usb_get_from_anchor(&data->deferred))) {
3190                 err = usb_submit_urb(urb, GFP_ATOMIC);
3191                 if (err < 0)
3192                         break;
3193
3194                 data->tx_in_flight++;
3195         }
3196         usb_scuttle_anchored_urbs(&data->deferred);
3197 }
3198
3199 static int btusb_resume(struct usb_interface *intf)
3200 {
3201         struct btusb_data *data = usb_get_intfdata(intf);
3202         struct hci_dev *hdev = data->hdev;
3203         int err = 0;
3204
3205         BT_DBG("intf %p", intf);
3206
3207         if (--data->suspend_count)
3208                 return 0;
3209
3210         if (!test_bit(HCI_RUNNING, &hdev->flags))
3211                 goto done;
3212
3213         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
3214                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
3215                 if (err < 0) {
3216                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
3217                         goto failed;
3218                 }
3219         }
3220
3221         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
3222                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
3223                 if (err < 0) {
3224                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
3225                         goto failed;
3226                 }
3227
3228                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
3229         }
3230
3231         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
3232                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
3233                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
3234                 else
3235                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
3236         }
3237
3238         spin_lock_irq(&data->txlock);
3239         play_deferred(data);
3240         clear_bit(BTUSB_SUSPENDING, &data->flags);
3241         spin_unlock_irq(&data->txlock);
3242         schedule_work(&data->work);
3243
3244         return 0;
3245
3246 failed:
3247         usb_scuttle_anchored_urbs(&data->deferred);
3248 done:
3249         spin_lock_irq(&data->txlock);
3250         clear_bit(BTUSB_SUSPENDING, &data->flags);
3251         spin_unlock_irq(&data->txlock);
3252
3253         return err;
3254 }
3255 #endif
3256
3257 static struct usb_driver btusb_driver = {
3258         .name           = "btusb",
3259         .probe          = btusb_probe,
3260         .disconnect     = btusb_disconnect,
3261 #ifdef CONFIG_PM
3262         .suspend        = btusb_suspend,
3263         .resume         = btusb_resume,
3264 #endif
3265         .id_table       = btusb_table,
3266         .supports_autosuspend = 1,
3267         .disable_hub_initiated_lpm = 1,
3268 };
3269
3270 module_usb_driver(btusb_driver);
3271
3272 module_param(disable_scofix, bool, 0644);
3273 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
3274
3275 module_param(force_scofix, bool, 0644);
3276 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
3277
3278 module_param(reset, bool, 0644);
3279 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
3280
3281 MODULE_AUTHOR("Marcel Holtmann <[email protected]>");
3282 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
3283 MODULE_VERSION(VERSION);
3284 MODULE_LICENSE("GPL");