drivers/bluetooth/btusb.c

   1 /*
   2  *
   3  *  Generic Bluetooth USB driver
   4  *
   5  *  Copyright (C) 2005-2008  Marcel Holtmann <marcel@holtmann.org>
   6  *
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, write to the Free Software
  20  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  *
  22  */
  23
  24 #include <linux/module.h>
  25 #include <linux/usb.h>
  26 #include <linux/firmware.h>
  27 #include <asm/unaligned.h>
  28
  29 #include <net/bluetooth/bluetooth.h>
  30 #include <net/bluetooth/hci_core.h>
  31
  32 #include "btintel.h"
  33 #include "btbcm.h"
  34 #include "btrtl.h"
  35
  36 #define VERSION "0.8"
  37
  38 static bool disable_scofix;
  39 static bool force_scofix;
  40
  41 static bool reset = 1;
  42
  43 static struct usb_driver btusb_driver;
  44
  45 #define BTUSB_IGNORE            0x01
  46 #define BTUSB_DIGIANSWER        0x02
  47 #define BTUSB_CSR               0x04
  48 #define BTUSB_SNIFFER           0x08
  49 #define BTUSB_BCM92035          0x10
  50 #define BTUSB_BROKEN_ISOC       0x20
  51 #define BTUSB_WRONG_SCO_MTU     0x40
  52 #define BTUSB_ATH3012           0x80
  53 #define BTUSB_INTEL             0x100
  54 #define BTUSB_INTEL_BOOT        0x200
  55 #define BTUSB_BCM_PATCHRAM      0x400
  56 #define BTUSB_MARVELL           0x800
  57 #define BTUSB_SWAVE             0x1000
  58 #define BTUSB_INTEL_NEW         0x2000
  59 #define BTUSB_AMP               0x4000
  60 #define BTUSB_QCA_ROME          0x8000
  61 #define BTUSB_BCM_APPLE         0x10000
  62 #define BTUSB_REALTEK           0x20000
  63
  64 static const struct usb_device_id btusb_table[] = {
  65         /* Generic Bluetooth USB device */
  66         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  67
  68         /* Generic Bluetooth AMP device */
  69         { USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP },
  70
  71         /* Apple-specific (Broadcom) devices */
  72         { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01),
  73           .driver_info = BTUSB_BCM_APPLE },
  74
  75         /* MediaTek MT76x0E */
  76         { USB_DEVICE(0x0e8d, 0x763f) },
  77
  78         /* Broadcom SoftSailing reporting vendor specific */
  79         { USB_DEVICE(0x0a5c, 0x21e1) },
  80
  81         /* Apple MacBookPro 7,1 */
  82         { USB_DEVICE(0x05ac, 0x8213) },
  83
  84         /* Apple iMac11,1 */
  85         { USB_DEVICE(0x05ac, 0x8215) },
  86
  87         /* Apple MacBookPro6,2 */
  88         { USB_DEVICE(0x05ac, 0x8218) },
  89
  90         /* Apple MacBookAir3,1, MacBookAir3,2 */
  91         { USB_DEVICE(0x05ac, 0x821b) },
  92
  93         /* Apple MacBookAir4,1 */
  94         { USB_DEVICE(0x05ac, 0x821f) },
  95
  96         /* Apple MacBookPro8,2 */
  97         { USB_DEVICE(0x05ac, 0x821a) },
  98
  99         /* Apple MacMini5,1 */
 100         { USB_DEVICE(0x05ac, 0x8281) },
 101
 102         /* AVM BlueFRITZ! USB v2.0 */
 103         { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE },
 104
 105         /* Bluetooth Ultraport Module from IBM */
 106         { USB_DEVICE(0x04bf, 0x030a) },
 107
 108         /* ALPS Modules with non-standard id */
 109         { USB_DEVICE(0x044e, 0x3001) },
 110         { USB_DEVICE(0x044e, 0x3002) },
 111
 112         /* Ericsson with non-standard id */
 113         { USB_DEVICE(0x0bdb, 0x1002) },
 114
 115         /* Canyon CN-BTU1 with HID interfaces */
 116         { USB_DEVICE(0x0c10, 0x0000) },
 117
 118         /* Broadcom BCM20702A0 */
 119         { USB_DEVICE(0x413c, 0x8197) },
 120
 121         /* Broadcom BCM20702B0 (Dynex/Insignia) */
 122         { USB_DEVICE(0x19ff, 0x0239), .driver_info = BTUSB_BCM_PATCHRAM },
 123
 124         /* Foxconn - Hon Hai */
 125         { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01),
 126           .driver_info = BTUSB_BCM_PATCHRAM },
 127
 128         /* Lite-On Technology - Broadcom based */
 129         { USB_VENDOR_AND_INTERFACE_INFO(0x04ca, 0xff, 0x01, 0x01),
 130           .driver_info = BTUSB_BCM_PATCHRAM },
 131
 132         /* Broadcom devices with vendor specific id */
 133         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
 134           .driver_info = BTUSB_BCM_PATCHRAM },
 135
 136         /* ASUSTek Computer - Broadcom based */
 137         { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01),
 138           .driver_info = BTUSB_BCM_PATCHRAM },
 139
 140         /* Belkin F8065bf - Broadcom based */
 141         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01),
 142           .driver_info = BTUSB_BCM_PATCHRAM },
 143
 144         /* IMC Networks - Broadcom based */
 145         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01),
 146           .driver_info = BTUSB_BCM_PATCHRAM },
 147
 148         /* Intel Bluetooth USB Bootloader (RAM module) */
 149         { USB_DEVICE(0x8087, 0x0a5a),
 150           .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
 151
 152         { }     /* Terminating entry */
 153 };
 154
 155 MODULE_DEVICE_TABLE(usb, btusb_table);
 156
 157 static const struct usb_device_id blacklist_table[] = {
 158         /* CSR BlueCore devices */
 159         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 160
 161         /* Broadcom BCM2033 without firmware */
 162         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 163
 164         /* Atheros 3011 with sflash firmware */
 165         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 166         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 167         { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE },
 168         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 169         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 170         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 171         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 172
 173         /* Atheros AR9285 Malbec with sflash firmware */
 174         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 175
 176         /* Atheros 3012 with sflash firmware */
 177         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 178         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 179         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 180         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 181         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 182         { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
 183         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 184         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 185         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 186         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 187         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 188         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 189         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 190         { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
 191         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 192         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 193         { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
 194         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 195         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 196         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 197         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 198         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 199         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
 200         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 201         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 202         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 203         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 204         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 205         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 206         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 207         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 208         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 209         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 210         { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
 211         { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
 212         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
 213
 214         /* Atheros AR5BBU12 with sflash firmware */
 215         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 216
 217         /* Atheros AR5BBU12 with sflash firmware */
 218         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 219         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 220
 221         /* QCA ROME chipset */
 222         { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME },
 223         { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME },
 224
 225         /* Broadcom BCM2035 */
 226         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 227         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 228         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 229
 230         /* Broadcom BCM2045 */
 231         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 232         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 233
 234         /* IBM/Lenovo ThinkPad with Broadcom chip */
 235         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 236         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 237
 238         /* HP laptop with Broadcom chip */
 239         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 240
 241         /* Dell laptop with Broadcom chip */
 242         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 243
 244         /* Dell Wireless 370 and 410 devices */
 245         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 246         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 247
 248         /* Belkin F8T012 and F8T013 devices */
 249         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 250         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 251
 252         /* Asus WL-BTD202 device */
 253         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 254
 255         /* Kensington Bluetooth USB adapter */
 256         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 257
 258         /* RTX Telecom based adapters with buggy SCO support */
 259         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 260         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 261
 262         /* CONWISE Technology based adapters with buggy SCO support */
 263         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 264
 265         /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
 266         { USB_DEVICE(0x1300, 0x0001), .driver_info = BTUSB_SWAVE },
 267
 268         /* Digianswer devices */
 269         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 270         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 271
 272         /* CSR BlueCore Bluetooth Sniffer */
 273         { USB_DEVICE(0x0a12, 0x0002),
 274           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 275
 276         /* Frontline ComProbe Bluetooth Sniffer */
 277         { USB_DEVICE(0x16d3, 0x0002),
 278           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 279
 280         /* Marvell Bluetooth devices */
 281         { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
 282         { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
 283
 284         /* Intel Bluetooth devices */
 285         { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR },
 286         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 287         { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
 288         { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_NEW },
 289
 290         /* Other Intel Bluetooth devices */
 291         { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01),
 292           .driver_info = BTUSB_IGNORE },
 293
 294         /* Realtek Bluetooth devices */
 295         { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01),
 296           .driver_info = BTUSB_REALTEK },
 297
 298         /* Additional Realtek 8723AE Bluetooth devices */
 299         { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK },
 300         { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK },
 301
 302         /* Additional Realtek 8723BE Bluetooth devices */
 303         { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK },
 304         { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK },
 305         { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
 306         { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
 307         { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },
 308
 309         /* Additional Realtek 8821AE Bluetooth devices */
 310         { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
 311         { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },
 312         { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK },
 313         { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK },
 314         { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK },
 315
 316         { }     /* Terminating entry */
 317 };
 318
 319 #define BTUSB_MAX_ISOC_FRAMES   10
 320
 321 #define BTUSB_INTR_RUNNING      0
 322 #define BTUSB_BULK_RUNNING      1
 323 #define BTUSB_ISOC_RUNNING      2
 324 #define BTUSB_SUSPENDING        3
 325 #define BTUSB_DID_ISO_RESUME    4
 326 #define BTUSB_BOOTLOADER        5
 327 #define BTUSB_DOWNLOADING       6
 328 #define BTUSB_FIRMWARE_LOADED   7
 329 #define BTUSB_FIRMWARE_FAILED   8
 330 #define BTUSB_BOOTING           9
 331
 332 struct btusb_data {
 333         struct hci_dev       *hdev;
 334         struct usb_device    *udev;
 335         struct usb_interface *intf;
 336         struct usb_interface *isoc;
 337
 338         unsigned long flags;
 339
 340         struct work_struct work;
 341         struct work_struct waker;
 342
 343         struct usb_anchor deferred;
 344         struct usb_anchor tx_anchor;
 345         int tx_in_flight;
 346         spinlock_t txlock;
 347
 348         struct usb_anchor intr_anchor;
 349         struct usb_anchor bulk_anchor;
 350         struct usb_anchor isoc_anchor;
 351         spinlock_t rxlock;
 352
 353         struct sk_buff *evt_skb;
 354         struct sk_buff *acl_skb;
 355         struct sk_buff *sco_skb;
 356
 357         struct usb_endpoint_descriptor *intr_ep;
 358         struct usb_endpoint_descriptor *bulk_tx_ep;
 359         struct usb_endpoint_descriptor *bulk_rx_ep;
 360         struct usb_endpoint_descriptor *isoc_tx_ep;
 361         struct usb_endpoint_descriptor *isoc_rx_ep;
 362
 363         __u8 cmdreq_type;
 364         __u8 cmdreq;
 365
 366         unsigned int sco_num;
 367         int isoc_altsetting;
 368         int suspend_count;
 369
 370         int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
 371         int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
 372
 373         int (*setup_on_usb)(struct hci_dev *hdev);
 374 };
 375
 376 static inline void btusb_free_frags(struct btusb_data *data)
 377 {
 378         unsigned long flags;
 379
 380         spin_lock_irqsave(&data->rxlock, flags);
 381
 382         kfree_skb(data->evt_skb);
 383         data->evt_skb = NULL;
 384
 385         kfree_skb(data->acl_skb);
 386         data->acl_skb = NULL;
 387
 388         kfree_skb(data->sco_skb);
 389         data->sco_skb = NULL;
 390
 391         spin_unlock_irqrestore(&data->rxlock, flags);
 392 }
 393
 394 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
 395 {
 396         struct sk_buff *skb;
 397         int err = 0;
 398
 399         spin_lock(&data->rxlock);
 400         skb = data->evt_skb;
 401
 402         while (count) {
 403                 int len;
 404
 405                 if (!skb) {
 406                         skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
 407                         if (!skb) {
 408                                 err = -ENOMEM;
 409                                 break;
 410                         }
 411
 412                         bt_cb(skb)->pkt_type = HCI_EVENT_PKT;
 413                         bt_cb(skb)->expect = HCI_EVENT_HDR_SIZE;
 414                 }
 415
 416                 len = min_t(uint, bt_cb(skb)->expect, count);
 417                 memcpy(skb_put(skb, len), buffer, len);
 418
 419                 count -= len;
 420                 buffer += len;
 421                 bt_cb(skb)->expect -= len;
 422
 423                 if (skb->len == HCI_EVENT_HDR_SIZE) {
 424                         /* Complete event header */
 425                         bt_cb(skb)->expect = hci_event_hdr(skb)->plen;
 426
 427                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 428                                 kfree_skb(skb);
 429                                 skb = NULL;
 430
 431                                 err = -EILSEQ;
 432                                 break;
 433                         }
 434                 }
 435
 436                 if (bt_cb(skb)->expect == 0) {
 437                         /* Complete frame */
 438                         data->recv_event(data->hdev, skb);
 439                         skb = NULL;
 440                 }
 441         }
 442
 443         data->evt_skb = skb;
 444         spin_unlock(&data->rxlock);
 445
 446         return err;
 447 }
 448
 449 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
 450 {
 451         struct sk_buff *skb;
 452         int err = 0;
 453
 454         spin_lock(&data->rxlock);
 455         skb = data->acl_skb;
 456
 457         while (count) {
 458                 int len;
 459
 460                 if (!skb) {
 461                         skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
 462                         if (!skb) {
 463                                 err = -ENOMEM;
 464                                 break;
 465                         }
 466
 467                         bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT;
 468                         bt_cb(skb)->expect = HCI_ACL_HDR_SIZE;
 469                 }
 470
 471                 len = min_t(uint, bt_cb(skb)->expect, count);
 472                 memcpy(skb_put(skb, len), buffer, len);
 473
 474                 count -= len;
 475                 buffer += len;
 476                 bt_cb(skb)->expect -= len;
 477
 478                 if (skb->len == HCI_ACL_HDR_SIZE) {
 479                         __le16 dlen = hci_acl_hdr(skb)->dlen;
 480
 481                         /* Complete ACL header */
 482                         bt_cb(skb)->expect = __le16_to_cpu(dlen);
 483
 484                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 485                                 kfree_skb(skb);
 486                                 skb = NULL;
 487
 488                                 err = -EILSEQ;
 489                                 break;
 490                         }
 491                 }
 492
 493                 if (bt_cb(skb)->expect == 0) {
 494                         /* Complete frame */
 495                         hci_recv_frame(data->hdev, skb);
 496                         skb = NULL;
 497                 }
 498         }
 499
 500         data->acl_skb = skb;
 501         spin_unlock(&data->rxlock);
 502
 503         return err;
 504 }
 505
 506 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
 507 {
 508         struct sk_buff *skb;
 509         int err = 0;
 510
 511         spin_lock(&data->rxlock);
 512         skb = data->sco_skb;
 513
 514         while (count) {
 515                 int len;
 516
 517                 if (!skb) {
 518                         skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
 519                         if (!skb) {
 520                                 err = -ENOMEM;
 521                                 break;
 522                         }
 523
 524                         bt_cb(skb)->pkt_type = HCI_SCODATA_PKT;
 525                         bt_cb(skb)->expect = HCI_SCO_HDR_SIZE;
 526                 }
 527
 528                 len = min_t(uint, bt_cb(skb)->expect, count);
 529                 memcpy(skb_put(skb, len), buffer, len);
 530
 531                 count -= len;
 532                 buffer += len;
 533                 bt_cb(skb)->expect -= len;
 534
 535                 if (skb->len == HCI_SCO_HDR_SIZE) {
 536                         /* Complete SCO header */
 537                         bt_cb(skb)->expect = hci_sco_hdr(skb)->dlen;
 538
 539                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 540                                 kfree_skb(skb);
 541                                 skb = NULL;
 542
 543                                 err = -EILSEQ;
 544                                 break;
 545                         }
 546                 }
 547
 548                 if (bt_cb(skb)->expect == 0) {
 549                         /* Complete frame */
 550                         hci_recv_frame(data->hdev, skb);
 551                         skb = NULL;
 552                 }
 553         }
 554
 555         data->sco_skb = skb;
 556         spin_unlock(&data->rxlock);
 557
 558         return err;
 559 }
 560
 561 static void btusb_intr_complete(struct urb *urb)
 562 {
 563         struct hci_dev *hdev = urb->context;
 564         struct btusb_data *data = hci_get_drvdata(hdev);
 565         int err;
 566
 567         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 568                urb->actual_length);
 569
 570         if (!test_bit(HCI_RUNNING, &hdev->flags))
 571                 return;
 572
 573         if (urb->status == 0) {
 574                 hdev->stat.byte_rx += urb->actual_length;
 575
 576                 if (btusb_recv_intr(data, urb->transfer_buffer,
 577                                     urb->actual_length) < 0) {
 578                         BT_ERR("%s corrupted event packet", hdev->name);
 579                         hdev->stat.err_rx++;
 580                 }
 581         } else if (urb->status == -ENOENT) {
 582                 /* Avoid suspend failed when usb_kill_urb */
 583                 return;
 584         }
 585
 586         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 587                 return;
 588
 589         usb_mark_last_busy(data->udev);
 590         usb_anchor_urb(urb, &data->intr_anchor);
 591
 592         err = usb_submit_urb(urb, GFP_ATOMIC);
 593         if (err < 0) {
 594                 /* -EPERM: urb is being killed;
 595                  * -ENODEV: device got disconnected */
 596                 if (err != -EPERM && err != -ENODEV)
 597                         BT_ERR("%s urb %p failed to resubmit (%d)",
 598                                hdev->name, urb, -err);
 599                 usb_unanchor_urb(urb);
 600         }
 601 }
 602
 603 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 604 {
 605         struct btusb_data *data = hci_get_drvdata(hdev);
 606         struct urb *urb;
 607         unsigned char *buf;
 608         unsigned int pipe;
 609         int err, size;
 610
 611         BT_DBG("%s", hdev->name);
 612
 613         if (!data->intr_ep)
 614                 return -ENODEV;
 615
 616         urb = usb_alloc_urb(0, mem_flags);
 617         if (!urb)
 618                 return -ENOMEM;
 619
 620         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 621
 622         buf = kmalloc(size, mem_flags);
 623         if (!buf) {
 624                 usb_free_urb(urb);
 625                 return -ENOMEM;
 626         }
 627
 628         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 629
 630         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 631                          btusb_intr_complete, hdev, data->intr_ep->bInterval);
 632
 633         urb->transfer_flags |= URB_FREE_BUFFER;
 634
 635         usb_anchor_urb(urb, &data->intr_anchor);
 636
 637         err = usb_submit_urb(urb, mem_flags);
 638         if (err < 0) {
 639                 if (err != -EPERM && err != -ENODEV)
 640                         BT_ERR("%s urb %p submission failed (%d)",
 641                                hdev->name, urb, -err);
 642                 usb_unanchor_urb(urb);
 643         }
 644
 645         usb_free_urb(urb);
 646
 647         return err;
 648 }
 649
 650 static void btusb_bulk_complete(struct urb *urb)
 651 {
 652         struct hci_dev *hdev = urb->context;
 653         struct btusb_data *data = hci_get_drvdata(hdev);
 654         int err;
 655
 656         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 657                urb->actual_length);
 658
 659         if (!test_bit(HCI_RUNNING, &hdev->flags))
 660                 return;
 661
 662         if (urb->status == 0) {
 663                 hdev->stat.byte_rx += urb->actual_length;
 664
 665                 if (data->recv_bulk(data, urb->transfer_buffer,
 666                                     urb->actual_length) < 0) {
 667                         BT_ERR("%s corrupted ACL packet", hdev->name);
 668                         hdev->stat.err_rx++;
 669                 }
 670         } else if (urb->status == -ENOENT) {
 671                 /* Avoid suspend failed when usb_kill_urb */
 672                 return;
 673         }
 674
 675         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 676                 return;
 677
 678         usb_anchor_urb(urb, &data->bulk_anchor);
 679         usb_mark_last_busy(data->udev);
 680
 681         err = usb_submit_urb(urb, GFP_ATOMIC);
 682         if (err < 0) {
 683                 /* -EPERM: urb is being killed;
 684                  * -ENODEV: device got disconnected */
 685                 if (err != -EPERM && err != -ENODEV)
 686                         BT_ERR("%s urb %p failed to resubmit (%d)",
 687                                hdev->name, urb, -err);
 688                 usb_unanchor_urb(urb);
 689         }
 690 }
 691
 692 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 693 {
 694         struct btusb_data *data = hci_get_drvdata(hdev);
 695         struct urb *urb;
 696         unsigned char *buf;
 697         unsigned int pipe;
 698         int err, size = HCI_MAX_FRAME_SIZE;
 699
 700         BT_DBG("%s", hdev->name);
 701
 702         if (!data->bulk_rx_ep)
 703                 return -ENODEV;
 704
 705         urb = usb_alloc_urb(0, mem_flags);
 706         if (!urb)
 707                 return -ENOMEM;
 708
 709         buf = kmalloc(size, mem_flags);
 710         if (!buf) {
 711                 usb_free_urb(urb);
 712                 return -ENOMEM;
 713         }
 714
 715         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 716
 717         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
 718                           btusb_bulk_complete, hdev);
 719
 720         urb->transfer_flags |= URB_FREE_BUFFER;
 721
 722         usb_mark_last_busy(data->udev);
 723         usb_anchor_urb(urb, &data->bulk_anchor);
 724
 725         err = usb_submit_urb(urb, mem_flags);
 726         if (err < 0) {
 727                 if (err != -EPERM && err != -ENODEV)
 728                         BT_ERR("%s urb %p submission failed (%d)",
 729                                hdev->name, urb, -err);
 730                 usb_unanchor_urb(urb);
 731         }
 732
 733         usb_free_urb(urb);
 734
 735         return err;
 736 }
 737
 738 static void btusb_isoc_complete(struct urb *urb)
 739 {
 740         struct hci_dev *hdev = urb->context;
 741         struct btusb_data *data = hci_get_drvdata(hdev);
 742         int i, err;
 743
 744         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 745                urb->actual_length);
 746
 747         if (!test_bit(HCI_RUNNING, &hdev->flags))
 748                 return;
 749
 750         if (urb->status == 0) {
 751                 for (i = 0; i < urb->number_of_packets; i++) {
 752                         unsigned int offset = urb->iso_frame_desc[i].offset;
 753                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 754
 755                         if (urb->iso_frame_desc[i].status)
 756                                 continue;
 757
 758                         hdev->stat.byte_rx += length;
 759
 760                         if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
 761                                             length) < 0) {
 762                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 763                                 hdev->stat.err_rx++;
 764                         }
 765                 }
 766         } else if (urb->status == -ENOENT) {
 767                 /* Avoid suspend failed when usb_kill_urb */
 768                 return;
 769         }
 770
 771         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 772                 return;
 773
 774         usb_anchor_urb(urb, &data->isoc_anchor);
 775
 776         err = usb_submit_urb(urb, GFP_ATOMIC);
 777         if (err < 0) {
 778                 /* -EPERM: urb is being killed;
 779                  * -ENODEV: device got disconnected */
 780                 if (err != -EPERM && err != -ENODEV)
 781                         BT_ERR("%s urb %p failed to resubmit (%d)",
 782                                hdev->name, urb, -err);
 783                 usb_unanchor_urb(urb);
 784         }
 785 }
 786
 787 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 788 {
 789         int i, offset = 0;
 790
 791         BT_DBG("len %d mtu %d", len, mtu);
 792
 793         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 794                                         i++, offset += mtu, len -= mtu) {
 795                 urb->iso_frame_desc[i].offset = offset;
 796                 urb->iso_frame_desc[i].length = mtu;
 797         }
 798
 799         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 800                 urb->iso_frame_desc[i].offset = offset;
 801                 urb->iso_frame_desc[i].length = len;
 802                 i++;
 803         }
 804
 805         urb->number_of_packets = i;
 806 }
 807
 808 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 809 {
 810         struct btusb_data *data = hci_get_drvdata(hdev);
 811         struct urb *urb;
 812         unsigned char *buf;
 813         unsigned int pipe;
 814         int err, size;
 815
 816         BT_DBG("%s", hdev->name);
 817
 818         if (!data->isoc_rx_ep)
 819                 return -ENODEV;
 820
 821         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 822         if (!urb)
 823                 return -ENOMEM;
 824
 825         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 826                                                 BTUSB_MAX_ISOC_FRAMES;
 827
 828         buf = kmalloc(size, mem_flags);
 829         if (!buf) {
 830                 usb_free_urb(urb);
 831                 return -ENOMEM;
 832         }
 833
 834         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 835
 836         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 837                          hdev, data->isoc_rx_ep->bInterval);
 838
 839         urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
 840
 841         __fill_isoc_descriptor(urb, size,
 842                                le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 843
 844         usb_anchor_urb(urb, &data->isoc_anchor);
 845
 846         err = usb_submit_urb(urb, mem_flags);
 847         if (err < 0) {
 848                 if (err != -EPERM && err != -ENODEV)
 849                         BT_ERR("%s urb %p submission failed (%d)",
 850                                hdev->name, urb, -err);
 851                 usb_unanchor_urb(urb);
 852         }
 853
 854         usb_free_urb(urb);
 855
 856         return err;
 857 }
 858
 859 static void btusb_tx_complete(struct urb *urb)
 860 {
 861         struct sk_buff *skb = urb->context;
 862         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
 863         struct btusb_data *data = hci_get_drvdata(hdev);
 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         spin_lock(&data->txlock);
 878         data->tx_in_flight--;
 879         spin_unlock(&data->txlock);
 880
 881         kfree(urb->setup_packet);
 882
 883         kfree_skb(skb);
 884 }
 885
 886 static void btusb_isoc_tx_complete(struct urb *urb)
 887 {
 888         struct sk_buff *skb = urb->context;
 889         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
 890
 891         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 892                urb->actual_length);
 893
 894         if (!test_bit(HCI_RUNNING, &hdev->flags))
 895                 goto done;
 896
 897         if (!urb->status)
 898                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 899         else
 900                 hdev->stat.err_tx++;
 901
 902 done:
 903         kfree(urb->setup_packet);
 904
 905         kfree_skb(skb);
 906 }
 907
 908 static int btusb_open(struct hci_dev *hdev)
 909 {
 910         struct btusb_data *data = hci_get_drvdata(hdev);
 911         int err;
 912
 913         BT_DBG("%s", hdev->name);
 914
 915         /* Patching USB firmware files prior to starting any URBs of HCI path
 916          * It is more safe to use USB bulk channel for downloading USB patch
 917          */
 918         if (data->setup_on_usb) {
 919                 err = data->setup_on_usb(hdev);
 920                 if (err < 0)
 921                         return err;
 922         }
 923
 924         err = usb_autopm_get_interface(data->intf);
 925         if (err < 0)
 926                 return err;
 927
 928         data->intf->needs_remote_wakeup = 1;
 929
 930         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 931                 goto done;
 932
 933         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 934                 goto done;
 935
 936         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 937         if (err < 0)
 938                 goto failed;
 939
 940         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 941         if (err < 0) {
 942                 usb_kill_anchored_urbs(&data->intr_anchor);
 943                 goto failed;
 944         }
 945
 946         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 947         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 948
 949 done:
 950         usb_autopm_put_interface(data->intf);
 951         return 0;
 952
 953 failed:
 954         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 955         clear_bit(HCI_RUNNING, &hdev->flags);
 956         usb_autopm_put_interface(data->intf);
 957         return err;
 958 }
 959
 960 static void btusb_stop_traffic(struct btusb_data *data)
 961 {
 962         usb_kill_anchored_urbs(&data->intr_anchor);
 963         usb_kill_anchored_urbs(&data->bulk_anchor);
 964         usb_kill_anchored_urbs(&data->isoc_anchor);
 965 }
 966
 967 static int btusb_close(struct hci_dev *hdev)
 968 {
 969         struct btusb_data *data = hci_get_drvdata(hdev);
 970         int err;
 971
 972         BT_DBG("%s", hdev->name);
 973
 974         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 975                 return 0;
 976
 977         cancel_work_sync(&data->work);
 978         cancel_work_sync(&data->waker);
 979
 980         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 981         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 982         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 983
 984         btusb_stop_traffic(data);
 985         btusb_free_frags(data);
 986
 987         err = usb_autopm_get_interface(data->intf);
 988         if (err < 0)
 989                 goto failed;
 990
 991         data->intf->needs_remote_wakeup = 0;
 992         usb_autopm_put_interface(data->intf);
 993
 994 failed:
 995         usb_scuttle_anchored_urbs(&data->deferred);
 996         return 0;
 997 }
 998
 999 static int btusb_flush(struct hci_dev *hdev)
1000 {
1001         struct btusb_data *data = hci_get_drvdata(hdev);
1002
1003         BT_DBG("%s", hdev->name);
1004
1005         usb_kill_anchored_urbs(&data->tx_anchor);
1006         btusb_free_frags(data);
1007
1008         return 0;
1009 }
1010
1011 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
1012 {
1013         struct btusb_data *data = hci_get_drvdata(hdev);
1014         struct usb_ctrlrequest *dr;
1015         struct urb *urb;
1016         unsigned int pipe;
1017
1018         urb = usb_alloc_urb(0, GFP_KERNEL);
1019         if (!urb)
1020                 return ERR_PTR(-ENOMEM);
1021
1022         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
1023         if (!dr) {
1024                 usb_free_urb(urb);
1025                 return ERR_PTR(-ENOMEM);
1026         }
1027
1028         dr->bRequestType = data->cmdreq_type;
1029         dr->bRequest     = data->cmdreq;
1030         dr->wIndex       = 0;
1031         dr->wValue       = 0;
1032         dr->wLength      = __cpu_to_le16(skb->len);
1033
1034         pipe = usb_sndctrlpipe(data->udev, 0x00);
1035
1036         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
1037                              skb->data, skb->len, btusb_tx_complete, skb);
1038
1039         skb->dev = (void *)hdev;
1040
1041         return urb;
1042 }
1043
1044 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
1045 {
1046         struct btusb_data *data = hci_get_drvdata(hdev);
1047         struct urb *urb;
1048         unsigned int pipe;
1049
1050         if (!data->bulk_tx_ep)
1051                 return ERR_PTR(-ENODEV);
1052
1053         urb = usb_alloc_urb(0, GFP_KERNEL);
1054         if (!urb)
1055                 return ERR_PTR(-ENOMEM);
1056
1057         pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1058
1059         usb_fill_bulk_urb(urb, data->udev, pipe,
1060                           skb->data, skb->len, btusb_tx_complete, skb);
1061
1062         skb->dev = (void *)hdev;
1063
1064         return urb;
1065 }
1066
1067 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1068 {
1069         struct btusb_data *data = hci_get_drvdata(hdev);
1070         struct urb *urb;
1071         unsigned int pipe;
1072
1073         if (!data->isoc_tx_ep)
1074                 return ERR_PTR(-ENODEV);
1075
1076         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1077         if (!urb)
1078                 return ERR_PTR(-ENOMEM);
1079
1080         pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1081
1082         usb_fill_int_urb(urb, data->udev, pipe,
1083                          skb->data, skb->len, btusb_isoc_tx_complete,
1084                          skb, data->isoc_tx_ep->bInterval);
1085
1086         urb->transfer_flags  = URB_ISO_ASAP;
1087
1088         __fill_isoc_descriptor(urb, skb->len,
1089                                le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1090
1091         skb->dev = (void *)hdev;
1092
1093         return urb;
1094 }
1095
1096 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1097 {
1098         struct btusb_data *data = hci_get_drvdata(hdev);
1099         int err;
1100
1101         usb_anchor_urb(urb, &data->tx_anchor);
1102
1103         err = usb_submit_urb(urb, GFP_KERNEL);
1104         if (err < 0) {
1105                 if (err != -EPERM && err != -ENODEV)
1106                         BT_ERR("%s urb %p submission failed (%d)",
1107                                hdev->name, urb, -err);
1108                 kfree(urb->setup_packet);
1109                 usb_unanchor_urb(urb);
1110         } else {
1111                 usb_mark_last_busy(data->udev);
1112         }
1113
1114         usb_free_urb(urb);
1115         return err;
1116 }
1117
1118 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1119 {
1120         struct btusb_data *data = hci_get_drvdata(hdev);
1121         unsigned long flags;
1122         bool suspending;
1123
1124         spin_lock_irqsave(&data->txlock, flags);
1125         suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1126         if (!suspending)
1127                 data->tx_in_flight++;
1128         spin_unlock_irqrestore(&data->txlock, flags);
1129
1130         if (!suspending)
1131                 return submit_tx_urb(hdev, urb);
1132
1133         usb_anchor_urb(urb, &data->deferred);
1134         schedule_work(&data->waker);
1135
1136         usb_free_urb(urb);
1137         return 0;
1138 }
1139
1140 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1141 {
1142         struct urb *urb;
1143
1144         BT_DBG("%s", hdev->name);
1145
1146         if (!test_bit(HCI_RUNNING, &hdev->flags))
1147                 return -EBUSY;
1148
1149         switch (bt_cb(skb)->pkt_type) {
1150         case HCI_COMMAND_PKT:
1151                 urb = alloc_ctrl_urb(hdev, skb);
1152                 if (IS_ERR(urb))
1153                         return PTR_ERR(urb);
1154
1155                 hdev->stat.cmd_tx++;
1156                 return submit_or_queue_tx_urb(hdev, urb);
1157
1158         case HCI_ACLDATA_PKT:
1159                 urb = alloc_bulk_urb(hdev, skb);
1160                 if (IS_ERR(urb))
1161                         return PTR_ERR(urb);
1162
1163                 hdev->stat.acl_tx++;
1164                 return submit_or_queue_tx_urb(hdev, urb);
1165
1166         case HCI_SCODATA_PKT:
1167                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1168                         return -ENODEV;
1169
1170                 urb = alloc_isoc_urb(hdev, skb);
1171                 if (IS_ERR(urb))
1172                         return PTR_ERR(urb);
1173
1174                 hdev->stat.sco_tx++;
1175                 return submit_tx_urb(hdev, urb);
1176         }
1177
1178         return -EILSEQ;
1179 }
1180
1181 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1182 {
1183         struct btusb_data *data = hci_get_drvdata(hdev);
1184
1185         BT_DBG("%s evt %d", hdev->name, evt);
1186
1187         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1188                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1189                 schedule_work(&data->work);
1190         }
1191 }
1192
1193 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1194 {
1195         struct btusb_data *data = hci_get_drvdata(hdev);
1196         struct usb_interface *intf = data->isoc;
1197         struct usb_endpoint_descriptor *ep_desc;
1198         int i, err;
1199
1200         if (!data->isoc)
1201                 return -ENODEV;
1202
1203         err = usb_set_interface(data->udev, 1, altsetting);
1204         if (err < 0) {
1205                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
1206                 return err;
1207         }
1208
1209         data->isoc_altsetting = altsetting;
1210
1211         data->isoc_tx_ep = NULL;
1212         data->isoc_rx_ep = NULL;
1213
1214         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1215                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1216
1217                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1218                         data->isoc_tx_ep = ep_desc;
1219                         continue;
1220                 }
1221
1222                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1223                         data->isoc_rx_ep = ep_desc;
1224                         continue;
1225                 }
1226         }
1227
1228         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1229                 BT_ERR("%s invalid SCO descriptors", hdev->name);
1230                 return -ENODEV;
1231         }
1232
1233         return 0;
1234 }
1235
1236 static void btusb_work(struct work_struct *work)
1237 {
1238         struct btusb_data *data = container_of(work, struct btusb_data, work);
1239         struct hci_dev *hdev = data->hdev;
1240         int new_alts;
1241         int err;
1242
1243         if (data->sco_num > 0) {
1244                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1245                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1246                         if (err < 0) {
1247                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1248                                 usb_kill_anchored_urbs(&data->isoc_anchor);
1249                                 return;
1250                         }
1251
1252                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1253                 }
1254
1255                 if (hdev->voice_setting & 0x0020) {
1256                         static const int alts[3] = { 2, 4, 5 };
1257
1258                         new_alts = alts[data->sco_num - 1];
1259                 } else {
1260                         new_alts = data->sco_num;
1261                 }
1262
1263                 if (data->isoc_altsetting != new_alts) {
1264                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1265                         usb_kill_anchored_urbs(&data->isoc_anchor);
1266
1267                         if (__set_isoc_interface(hdev, new_alts) < 0)
1268                                 return;
1269                 }
1270
1271                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1272                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1273                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1274                         else
1275                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1276                 }
1277         } else {
1278                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1279                 usb_kill_anchored_urbs(&data->isoc_anchor);
1280
1281                 __set_isoc_interface(hdev, 0);
1282                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1283                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1284         }
1285 }
1286
1287 static void btusb_waker(struct work_struct *work)
1288 {
1289         struct btusb_data *data = container_of(work, struct btusb_data, waker);
1290         int err;
1291
1292         err = usb_autopm_get_interface(data->intf);
1293         if (err < 0)
1294                 return;
1295
1296         usb_autopm_put_interface(data->intf);
1297 }
1298
1299 static struct sk_buff *btusb_read_local_version(struct hci_dev *hdev)
1300 {
1301         struct sk_buff *skb;
1302
1303         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1304                              HCI_INIT_TIMEOUT);
1305         if (IS_ERR(skb)) {
1306                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION failed (%ld)",
1307                        hdev->name, PTR_ERR(skb));
1308                 return skb;
1309         }
1310
1311         if (skb->len != sizeof(struct hci_rp_read_local_version)) {
1312                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION event length mismatch",
1313                        hdev->name);
1314                 kfree_skb(skb);
1315                 return ERR_PTR(-EIO);
1316         }
1317
1318         return skb;
1319 }
1320
1321 static int btusb_setup_bcm92035(struct hci_dev *hdev)
1322 {
1323         struct sk_buff *skb;
1324         u8 val = 0x00;
1325
1326         BT_DBG("%s", hdev->name);
1327
1328         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1329         if (IS_ERR(skb))
1330                 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
1331         else
1332                 kfree_skb(skb);
1333
1334         return 0;
1335 }
1336
1337 static int btusb_setup_csr(struct hci_dev *hdev)
1338 {
1339         struct hci_rp_read_local_version *rp;
1340         struct sk_buff *skb;
1341         int ret;
1342
1343         BT_DBG("%s", hdev->name);
1344
1345         skb = btusb_read_local_version(hdev);
1346         if (IS_ERR(skb))
1347                 return -PTR_ERR(skb);
1348
1349         rp = (struct hci_rp_read_local_version *)skb->data;
1350
1351         if (!rp->status) {
1352                 if (le16_to_cpu(rp->manufacturer) != 10) {
1353                         /* Clear the reset quirk since this is not an actual
1354                          * early Bluetooth 1.1 device from CSR.
1355                          */
1356                         clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1357
1358                         /* These fake CSR controllers have all a broken
1359                          * stored link key handling and so just disable it.
1360                          */
1361                         set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY,
1362                                 &hdev->quirks);
1363                 }
1364         }
1365
1366         ret = -bt_to_errno(rp->status);
1367
1368         kfree_skb(skb);
1369
1370         return ret;
1371 }
1372
1373 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1374                                                        struct intel_version *ver)
1375 {
1376         const struct firmware *fw;
1377         char fwname[64];
1378         int ret;
1379
1380         snprintf(fwname, sizeof(fwname),
1381                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1382                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
1383                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1384                  ver->fw_build_ww, ver->fw_build_yy);
1385
1386         ret = request_firmware(&fw, fwname, &hdev->dev);
1387         if (ret < 0) {
1388                 if (ret == -EINVAL) {
1389                         BT_ERR("%s Intel firmware file request failed (%d)",
1390                                hdev->name, ret);
1391                         return NULL;
1392                 }
1393
1394                 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1395                        hdev->name, fwname, ret);
1396
1397                 /* If the correct firmware patch file is not found, use the
1398                  * default firmware patch file instead
1399                  */
1400                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1401                          ver->hw_platform, ver->hw_variant);
1402                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1403                         BT_ERR("%s failed to open default Intel fw file: %s",
1404                                hdev->name, fwname);
1405                         return NULL;
1406                 }
1407         }
1408
1409         BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1410
1411         return fw;
1412 }
1413
1414 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1415                                       const struct firmware *fw,
1416                                       const u8 **fw_ptr, int *disable_patch)
1417 {
1418         struct sk_buff *skb;
1419         struct hci_command_hdr *cmd;
1420         const u8 *cmd_param;
1421         struct hci_event_hdr *evt = NULL;
1422         const u8 *evt_param = NULL;
1423         int remain = fw->size - (*fw_ptr - fw->data);
1424
1425         /* The first byte indicates the types of the patch command or event.
1426          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1427          * in the current firmware buffer doesn't start with 0x01 or
1428          * the size of remain buffer is smaller than HCI command header,
1429          * the firmware file is corrupted and it should stop the patching
1430          * process.
1431          */
1432         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1433                 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1434                 return -EINVAL;
1435         }
1436         (*fw_ptr)++;
1437         remain--;
1438
1439         cmd = (struct hci_command_hdr *)(*fw_ptr);
1440         *fw_ptr += sizeof(*cmd);
1441         remain -= sizeof(*cmd);
1442
1443         /* Ensure that the remain firmware data is long enough than the length
1444          * of command parameter. If not, the firmware file is corrupted.
1445          */
1446         if (remain < cmd->plen) {
1447                 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1448                 return -EFAULT;
1449         }
1450
1451         /* If there is a command that loads a patch in the firmware
1452          * file, then enable the patch upon success, otherwise just
1453          * disable the manufacturer mode, for example patch activation
1454          * is not required when the default firmware patch file is used
1455          * because there are no patch data to load.
1456          */
1457         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1458                 *disable_patch = 0;
1459
1460         cmd_param = *fw_ptr;
1461         *fw_ptr += cmd->plen;
1462         remain -= cmd->plen;
1463
1464         /* This reads the expected events when the above command is sent to the
1465          * device. Some vendor commands expects more than one events, for
1466          * example command status event followed by vendor specific event.
1467          * For this case, it only keeps the last expected event. so the command
1468          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1469          * last expected event.
1470          */
1471         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1472                 (*fw_ptr)++;
1473                 remain--;
1474
1475                 evt = (struct hci_event_hdr *)(*fw_ptr);
1476                 *fw_ptr += sizeof(*evt);
1477                 remain -= sizeof(*evt);
1478
1479                 if (remain < evt->plen) {
1480                         BT_ERR("%s Intel fw corrupted: invalid evt len",
1481                                hdev->name);
1482                         return -EFAULT;
1483                 }
1484
1485                 evt_param = *fw_ptr;
1486                 *fw_ptr += evt->plen;
1487                 remain -= evt->plen;
1488         }
1489
1490         /* Every HCI commands in the firmware file has its correspond event.
1491          * If event is not found or remain is smaller than zero, the firmware
1492          * file is corrupted.
1493          */
1494         if (!evt || !evt_param || remain < 0) {
1495                 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1496                 return -EFAULT;
1497         }
1498
1499         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1500                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1501         if (IS_ERR(skb)) {
1502                 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1503                        hdev->name, cmd->opcode, PTR_ERR(skb));
1504                 return PTR_ERR(skb);
1505         }
1506
1507         /* It ensures that the returned event matches the event data read from
1508          * the firmware file. At fist, it checks the length and then
1509          * the contents of the event.
1510          */
1511         if (skb->len != evt->plen) {
1512                 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1513                        le16_to_cpu(cmd->opcode));
1514                 kfree_skb(skb);
1515                 return -EFAULT;
1516         }
1517
1518         if (memcmp(skb->data, evt_param, evt->plen)) {
1519                 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1520                        hdev->name, le16_to_cpu(cmd->opcode));
1521                 kfree_skb(skb);
1522                 return -EFAULT;
1523         }
1524         kfree_skb(skb);
1525
1526         return 0;
1527 }
1528
1529 static int btusb_setup_intel(struct hci_dev *hdev)
1530 {
1531         struct sk_buff *skb;
1532         const struct firmware *fw;
1533         const u8 *fw_ptr;
1534         int disable_patch;
1535         struct intel_version *ver;
1536
1537         const u8 mfg_enable[] = { 0x01, 0x00 };
1538         const u8 mfg_disable[] = { 0x00, 0x00 };
1539         const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
1540         const u8 mfg_reset_activate[] = { 0x00, 0x02 };
1541
1542         BT_DBG("%s", hdev->name);
1543
1544         /* The controller has a bug with the first HCI command sent to it
1545          * returning number of completed commands as zero. This would stall the
1546          * command processing in the Bluetooth core.
1547          *
1548          * As a workaround, send HCI Reset command first which will reset the
1549          * number of completed commands and allow normal command processing
1550          * from now on.
1551          */
1552         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1553         if (IS_ERR(skb)) {
1554                 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1555                        hdev->name, PTR_ERR(skb));
1556                 return PTR_ERR(skb);
1557         }
1558         kfree_skb(skb);
1559
1560         /* Read Intel specific controller version first to allow selection of
1561          * which firmware file to load.
1562          *
1563          * The returned information are hardware variant and revision plus
1564          * firmware variant, revision and build number.
1565          */
1566         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1567         if (IS_ERR(skb)) {
1568                 BT_ERR("%s reading Intel fw version command failed (%ld)",
1569                        hdev->name, PTR_ERR(skb));
1570                 return PTR_ERR(skb);
1571         }
1572
1573         if (skb->len != sizeof(*ver)) {
1574                 BT_ERR("%s Intel version event length mismatch", hdev->name);
1575                 kfree_skb(skb);
1576                 return -EIO;
1577         }
1578
1579         ver = (struct intel_version *)skb->data;
1580
1581         BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1582                 hdev->name, ver->hw_platform, ver->hw_variant,
1583                 ver->hw_revision, ver->fw_variant,  ver->fw_revision,
1584                 ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
1585                 ver->fw_patch_num);
1586
1587         /* fw_patch_num indicates the version of patch the device currently
1588          * have. If there is no patch data in the device, it is always 0x00.
1589          * So, if it is other than 0x00, no need to patch the deivce again.
1590          */
1591         if (ver->fw_patch_num) {
1592                 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1593                         hdev->name, ver->fw_patch_num);
1594                 kfree_skb(skb);
1595                 btintel_check_bdaddr(hdev);
1596                 return 0;
1597         }
1598
1599         /* Opens the firmware patch file based on the firmware version read
1600          * from the controller. If it fails to open the matching firmware
1601          * patch file, it tries to open the default firmware patch file.
1602          * If no patch file is found, allow the device to operate without
1603          * a patch.
1604          */
1605         fw = btusb_setup_intel_get_fw(hdev, ver);
1606         if (!fw) {
1607                 kfree_skb(skb);
1608                 btintel_check_bdaddr(hdev);
1609                 return 0;
1610         }
1611         fw_ptr = fw->data;
1612
1613         /* This Intel specific command enables the manufacturer mode of the
1614          * controller.
1615          *
1616          * Only while this mode is enabled, the driver can download the
1617          * firmware patch data and configuration parameters.
1618          */
1619         skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
1620         if (IS_ERR(skb)) {
1621                 BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
1622                        hdev->name, PTR_ERR(skb));
1623                 release_firmware(fw);
1624                 return PTR_ERR(skb);
1625         }
1626
1627         kfree_skb(skb);
1628
1629         disable_patch = 1;
1630
1631         /* The firmware data file consists of list of Intel specific HCI
1632          * commands and its expected events. The first byte indicates the
1633          * type of the message, either HCI command or HCI event.
1634          *
1635          * It reads the command and its expected event from the firmware file,
1636          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1637          * the returned event is compared with the event read from the firmware
1638          * file and it will continue until all the messages are downloaded to
1639          * the controller.
1640          *
1641          * Once the firmware patching is completed successfully,
1642          * the manufacturer mode is disabled with reset and activating the
1643          * downloaded patch.
1644          *
1645          * If the firmware patching fails, the manufacturer mode is
1646          * disabled with reset and deactivating the patch.
1647          *
1648          * If the default patch file is used, no reset is done when disabling
1649          * the manufacturer.
1650          */
1651         while (fw->size > fw_ptr - fw->data) {
1652                 int ret;
1653
1654                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1655                                                  &disable_patch);
1656                 if (ret < 0)
1657                         goto exit_mfg_deactivate;
1658         }
1659
1660         release_firmware(fw);
1661
1662         if (disable_patch)
1663                 goto exit_mfg_disable;
1664
1665         /* Patching completed successfully and disable the manufacturer mode
1666          * with reset and activate the downloaded firmware patches.
1667          */
1668         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
1669                              mfg_reset_activate, HCI_INIT_TIMEOUT);
1670         if (IS_ERR(skb)) {
1671                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1672                        hdev->name, PTR_ERR(skb));
1673                 return PTR_ERR(skb);
1674         }
1675         kfree_skb(skb);
1676
1677         BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1678                 hdev->name);
1679
1680         btintel_check_bdaddr(hdev);
1681         return 0;
1682
1683 exit_mfg_disable:
1684         /* Disable the manufacturer mode without reset */
1685         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
1686                              HCI_INIT_TIMEOUT);
1687         if (IS_ERR(skb)) {
1688                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1689                        hdev->name, PTR_ERR(skb));
1690                 return PTR_ERR(skb);
1691         }
1692         kfree_skb(skb);
1693
1694         BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1695
1696         btintel_check_bdaddr(hdev);
1697         return 0;
1698
1699 exit_mfg_deactivate:
1700         release_firmware(fw);
1701
1702         /* Patching failed. Disable the manufacturer mode with reset and
1703          * deactivate the downloaded firmware patches.
1704          */
1705         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
1706                              mfg_reset_deactivate, HCI_INIT_TIMEOUT);
1707         if (IS_ERR(skb)) {
1708                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1709                        hdev->name, PTR_ERR(skb));
1710                 return PTR_ERR(skb);
1711         }
1712         kfree_skb(skb);
1713
1714         BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1715                 hdev->name);
1716
1717         btintel_check_bdaddr(hdev);
1718         return 0;
1719 }
1720
1721 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
1722 {
1723         struct sk_buff *skb;
1724         struct hci_event_hdr *hdr;
1725         struct hci_ev_cmd_complete *evt;
1726
1727         skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_ATOMIC);
1728         if (!skb)
1729                 return -ENOMEM;
1730
1731         hdr = (struct hci_event_hdr *)skb_put(skb, sizeof(*hdr));
1732         hdr->evt = HCI_EV_CMD_COMPLETE;
1733         hdr->plen = sizeof(*evt) + 1;
1734
1735         evt = (struct hci_ev_cmd_complete *)skb_put(skb, sizeof(*evt));
1736         evt->ncmd = 0x01;
1737         evt->opcode = cpu_to_le16(opcode);
1738
1739         *skb_put(skb, 1) = 0x00;
1740
1741         bt_cb(skb)->pkt_type = HCI_EVENT_PKT;
1742
1743         return hci_recv_frame(hdev, skb);
1744 }
1745
1746 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
1747                                  int count)
1748 {
1749         /* When the device is in bootloader mode, then it can send
1750          * events via the bulk endpoint. These events are treated the
1751          * same way as the ones received from the interrupt endpoint.
1752          */
1753         if (test_bit(BTUSB_BOOTLOADER, &data->flags))
1754                 return btusb_recv_intr(data, buffer, count);
1755
1756         return btusb_recv_bulk(data, buffer, count);
1757 }
1758
1759 static void btusb_intel_bootup(struct btusb_data *data, const void *ptr,
1760                                unsigned int len)
1761 {
1762         const struct intel_bootup *evt = ptr;
1763
1764         if (len != sizeof(*evt))
1765                 return;
1766
1767         if (test_and_clear_bit(BTUSB_BOOTING, &data->flags)) {
1768                 smp_mb__after_atomic();
1769                 wake_up_bit(&data->flags, BTUSB_BOOTING);
1770         }
1771 }
1772
1773 static void btusb_intel_secure_send_result(struct btusb_data *data,
1774                                            const void *ptr, unsigned int len)
1775 {
1776         const struct intel_secure_send_result *evt = ptr;
1777
1778         if (len != sizeof(*evt))
1779                 return;
1780
1781         if (evt->result)
1782                 set_bit(BTUSB_FIRMWARE_FAILED, &data->flags);
1783
1784         if (test_and_clear_bit(BTUSB_DOWNLOADING, &data->flags) &&
1785             test_bit(BTUSB_FIRMWARE_LOADED, &data->flags)) {
1786                 smp_mb__after_atomic();
1787                 wake_up_bit(&data->flags, BTUSB_DOWNLOADING);
1788         }
1789 }
1790
1791 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
1792 {
1793         struct btusb_data *data = hci_get_drvdata(hdev);
1794
1795         if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1796                 struct hci_event_hdr *hdr = (void *)skb->data;
1797
1798                 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
1799                     hdr->plen > 0) {
1800                         const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
1801                         unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
1802
1803                         switch (skb->data[2]) {
1804                         case 0x02:
1805                                 /* When switching to the operational firmware
1806                                  * the device sends a vendor specific event
1807                                  * indicating that the bootup completed.
1808                                  */
1809                                 btusb_intel_bootup(data, ptr, len);
1810                                 break;
1811                         case 0x06:
1812                                 /* When the firmware loading completes the
1813                                  * device sends out a vendor specific event
1814                                  * indicating the result of the firmware
1815                                  * loading.
1816                                  */
1817                                 btusb_intel_secure_send_result(data, ptr, len);
1818                                 break;
1819                         }
1820                 }
1821         }
1822
1823         return hci_recv_frame(hdev, skb);
1824 }
1825
1826 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
1827 {
1828         struct btusb_data *data = hci_get_drvdata(hdev);
1829         struct urb *urb;
1830
1831         BT_DBG("%s", hdev->name);
1832
1833         if (!test_bit(HCI_RUNNING, &hdev->flags))
1834                 return -EBUSY;
1835
1836         switch (bt_cb(skb)->pkt_type) {
1837         case HCI_COMMAND_PKT:
1838                 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1839                         struct hci_command_hdr *cmd = (void *)skb->data;
1840                         __u16 opcode = le16_to_cpu(cmd->opcode);
1841
1842                         /* When in bootloader mode and the command 0xfc09
1843                          * is received, it needs to be send down the
1844                          * bulk endpoint. So allocate a bulk URB instead.
1845                          */
1846                         if (opcode == 0xfc09)
1847                                 urb = alloc_bulk_urb(hdev, skb);
1848                         else
1849                                 urb = alloc_ctrl_urb(hdev, skb);
1850
1851                         /* When the 0xfc01 command is issued to boot into
1852                          * the operational firmware, it will actually not
1853                          * send a command complete event. To keep the flow
1854                          * control working inject that event here.
1855                          */
1856                         if (opcode == 0xfc01)
1857                                 inject_cmd_complete(hdev, opcode);
1858                 } else {
1859                         urb = alloc_ctrl_urb(hdev, skb);
1860                 }
1861                 if (IS_ERR(urb))
1862                         return PTR_ERR(urb);
1863
1864                 hdev->stat.cmd_tx++;
1865                 return submit_or_queue_tx_urb(hdev, urb);
1866
1867         case HCI_ACLDATA_PKT:
1868                 urb = alloc_bulk_urb(hdev, skb);
1869                 if (IS_ERR(urb))
1870                         return PTR_ERR(urb);
1871
1872                 hdev->stat.acl_tx++;
1873                 return submit_or_queue_tx_urb(hdev, urb);
1874
1875         case HCI_SCODATA_PKT:
1876                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1877                         return -ENODEV;
1878
1879                 urb = alloc_isoc_urb(hdev, skb);
1880                 if (IS_ERR(urb))
1881                         return PTR_ERR(urb);
1882
1883                 hdev->stat.sco_tx++;
1884                 return submit_tx_urb(hdev, urb);
1885         }
1886
1887         return -EILSEQ;
1888 }
1889
1890 static int btusb_intel_secure_send(struct hci_dev *hdev, u8 fragment_type,
1891                                    u32 plen, const void *param)
1892 {
1893         while (plen > 0) {
1894                 struct sk_buff *skb;
1895                 u8 cmd_param[253], fragment_len = (plen > 252) ? 252 : plen;
1896
1897                 cmd_param[0] = fragment_type;
1898                 memcpy(cmd_param + 1, param, fragment_len);
1899
1900                 skb = __hci_cmd_sync(hdev, 0xfc09, fragment_len + 1,
1901                                      cmd_param, HCI_INIT_TIMEOUT);
1902                 if (IS_ERR(skb))
1903                         return PTR_ERR(skb);
1904
1905                 kfree_skb(skb);
1906
1907                 plen -= fragment_len;
1908                 param += fragment_len;
1909         }
1910
1911         return 0;
1912 }
1913
1914 static void btusb_intel_version_info(struct hci_dev *hdev,
1915                                      struct intel_version *ver)
1916 {
1917         const char *variant;
1918
1919         switch (ver->fw_variant) {
1920         case 0x06:
1921                 variant = "Bootloader";
1922                 break;
1923         case 0x23:
1924                 variant = "Firmware";
1925                 break;
1926         default:
1927                 return;
1928         }
1929
1930         BT_INFO("%s: %s revision %u.%u build %u week %u %u", hdev->name,
1931                 variant, ver->fw_revision >> 4, ver->fw_revision & 0x0f,
1932                 ver->fw_build_num, ver->fw_build_ww, 2000 + ver->fw_build_yy);
1933 }
1934
1935 static int btusb_setup_intel_new(struct hci_dev *hdev)
1936 {
1937         static const u8 reset_param[] = { 0x00, 0x01, 0x00, 0x01,
1938                                           0x00, 0x08, 0x04, 0x00 };
1939         struct btusb_data *data = hci_get_drvdata(hdev);
1940         struct sk_buff *skb;
1941         struct intel_version *ver;
1942         struct intel_boot_params *params;
1943         const struct firmware *fw;
1944         const u8 *fw_ptr;
1945         char fwname[64];
1946         ktime_t calltime, delta, rettime;
1947         unsigned long long duration;
1948         int err;
1949
1950         BT_DBG("%s", hdev->name);
1951
1952         calltime = ktime_get();
1953
1954         /* Read the Intel version information to determine if the device
1955          * is in bootloader mode or if it already has operational firmware
1956          * loaded.
1957          */
1958         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1959         if (IS_ERR(skb)) {
1960                 BT_ERR("%s: Reading Intel version information failed (%ld)",
1961                        hdev->name, PTR_ERR(skb));
1962                 return PTR_ERR(skb);
1963         }
1964
1965         if (skb->len != sizeof(*ver)) {
1966                 BT_ERR("%s: Intel version event size mismatch", hdev->name);
1967                 kfree_skb(skb);
1968                 return -EILSEQ;
1969         }
1970
1971         ver = (struct intel_version *)skb->data;
1972
1973         /* The hardware platform number has a fixed value of 0x37 and
1974          * for now only accept this single value.
1975          */
1976         if (ver->hw_platform != 0x37) {
1977                 BT_ERR("%s: Unsupported Intel hardware platform (%u)",
1978                        hdev->name, ver->hw_platform);
1979                 kfree_skb(skb);
1980                 return -EINVAL;
1981         }
1982
1983         /* At the moment only the hardware variant iBT 3.0 (LnP/SfP) is
1984          * supported by this firmware loading method. This check has been
1985          * put in place to ensure correct forward compatibility options
1986          * when newer hardware variants come along.
1987          */
1988         if (ver->hw_variant != 0x0b) {
1989                 BT_ERR("%s: Unsupported Intel hardware variant (%u)",
1990                        hdev->name, ver->hw_variant);
1991                 kfree_skb(skb);
1992                 return -EINVAL;
1993         }
1994
1995         btusb_intel_version_info(hdev, ver);
1996
1997         /* The firmware variant determines if the device is in bootloader
1998          * mode or is running operational firmware. The value 0x06 identifies
1999          * the bootloader and the value 0x23 identifies the operational
2000          * firmware.
2001          *
2002          * When the operational firmware is already present, then only
2003          * the check for valid Bluetooth device address is needed. This
2004          * determines if the device will be added as configured or
2005          * unconfigured controller.
2006          *
2007          * It is not possible to use the Secure Boot Parameters in this
2008          * case since that command is only available in bootloader mode.
2009          */
2010         if (ver->fw_variant == 0x23) {
2011                 kfree_skb(skb);
2012                 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2013                 btintel_check_bdaddr(hdev);
2014                 return 0;
2015         }
2016
2017         /* If the device is not in bootloader mode, then the only possible
2018          * choice is to return an error and abort the device initialization.
2019          */
2020         if (ver->fw_variant != 0x06) {
2021                 BT_ERR("%s: Unsupported Intel firmware variant (%u)",
2022                        hdev->name, ver->fw_variant);
2023                 kfree_skb(skb);
2024                 return -ENODEV;
2025         }
2026
2027         kfree_skb(skb);
2028
2029         /* Read the secure boot parameters to identify the operating
2030          * details of the bootloader.
2031          */
2032         skb = __hci_cmd_sync(hdev, 0xfc0d, 0, NULL, HCI_INIT_TIMEOUT);
2033         if (IS_ERR(skb)) {
2034                 BT_ERR("%s: Reading Intel boot parameters failed (%ld)",
2035                        hdev->name, PTR_ERR(skb));
2036                 return PTR_ERR(skb);
2037         }
2038
2039         if (skb->len != sizeof(*params)) {
2040                 BT_ERR("%s: Intel boot parameters size mismatch", hdev->name);
2041                 kfree_skb(skb);
2042                 return -EILSEQ;
2043         }
2044
2045         params = (struct intel_boot_params *)skb->data;
2046
2047         BT_INFO("%s: Device revision is %u", hdev->name,
2048                 le16_to_cpu(params->dev_revid));
2049
2050         BT_INFO("%s: Secure boot is %s", hdev->name,
2051                 params->secure_boot ? "enabled" : "disabled");
2052
2053         BT_INFO("%s: Minimum firmware build %u week %u %u", hdev->name,
2054                 params->min_fw_build_nn, params->min_fw_build_cw,
2055                 2000 + params->min_fw_build_yy);
2056
2057         /* It is required that every single firmware fragment is acknowledged
2058          * with a command complete event. If the boot parameters indicate
2059          * that this bootloader does not send them, then abort the setup.
2060          */
2061         if (params->limited_cce != 0x00) {
2062                 BT_ERR("%s: Unsupported Intel firmware loading method (%u)",
2063                        hdev->name, params->limited_cce);
2064                 kfree_skb(skb);
2065                 return -EINVAL;
2066         }
2067
2068         /* If the OTP has no valid Bluetooth device address, then there will
2069          * also be no valid address for the operational firmware.
2070          */
2071         if (!bacmp(&params->otp_bdaddr, BDADDR_ANY)) {
2072                 BT_INFO("%s: No device address configured", hdev->name);
2073                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2074         }
2075
2076         /* With this Intel bootloader only the hardware variant and device
2077          * revision information are used to select the right firmware.
2078          *
2079          * Currently this bootloader support is limited to hardware variant
2080          * iBT 3.0 (LnP/SfP) which is identified by the value 11 (0x0b).
2081          */
2082         snprintf(fwname, sizeof(fwname), "intel/ibt-11-%u.sfi",
2083                  le16_to_cpu(params->dev_revid));
2084
2085         err = request_firmware(&fw, fwname, &hdev->dev);
2086         if (err < 0) {
2087                 BT_ERR("%s: Failed to load Intel firmware file (%d)",
2088                        hdev->name, err);
2089                 kfree_skb(skb);
2090                 return err;
2091         }
2092
2093         BT_INFO("%s: Found device firmware: %s", hdev->name, fwname);
2094
2095         kfree_skb(skb);
2096
2097         if (fw->size < 644) {
2098                 BT_ERR("%s: Invalid size of firmware file (%zu)",
2099                        hdev->name, fw->size);
2100                 err = -EBADF;
2101                 goto done;
2102         }
2103
2104         set_bit(BTUSB_DOWNLOADING, &data->flags);
2105
2106         /* Start the firmware download transaction with the Init fragment
2107          * represented by the 128 bytes of CSS header.
2108          */
2109         err = btusb_intel_secure_send(hdev, 0x00, 128, fw->data);
2110         if (err < 0) {
2111                 BT_ERR("%s: Failed to send firmware header (%d)",
2112                        hdev->name, err);
2113                 goto done;
2114         }
2115
2116         /* Send the 256 bytes of public key information from the firmware
2117          * as the PKey fragment.
2118          */
2119         err = btusb_intel_secure_send(hdev, 0x03, 256, fw->data + 128);
2120         if (err < 0) {
2121                 BT_ERR("%s: Failed to send firmware public key (%d)",
2122                        hdev->name, err);
2123                 goto done;
2124         }
2125
2126         /* Send the 256 bytes of signature information from the firmware
2127          * as the Sign fragment.
2128          */
2129         err = btusb_intel_secure_send(hdev, 0x02, 256, fw->data + 388);
2130         if (err < 0) {
2131                 BT_ERR("%s: Failed to send firmware signature (%d)",
2132                        hdev->name, err);
2133                 goto done;
2134         }
2135
2136         fw_ptr = fw->data + 644;
2137
2138         while (fw_ptr - fw->data < fw->size) {
2139                 struct hci_command_hdr *cmd = (void *)fw_ptr;
2140                 u8 cmd_len;
2141
2142                 cmd_len = sizeof(*cmd) + cmd->plen;
2143
2144                 /* Send each command from the firmware data buffer as
2145                  * a single Data fragment.
2146                  */
2147                 err = btusb_intel_secure_send(hdev, 0x01, cmd_len, fw_ptr);
2148                 if (err < 0) {
2149                         BT_ERR("%s: Failed to send firmware data (%d)",
2150                                hdev->name, err);
2151                         goto done;
2152                 }
2153
2154                 fw_ptr += cmd_len;
2155         }
2156
2157         set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2158
2159         BT_INFO("%s: Waiting for firmware download to complete", hdev->name);
2160
2161         /* Before switching the device into operational mode and with that
2162          * booting the loaded firmware, wait for the bootloader notification
2163          * that all fragments have been successfully received.
2164          *
2165          * When the event processing receives the notification, then the
2166          * BTUSB_DOWNLOADING flag will be cleared.
2167          *
2168          * The firmware loading should not take longer than 5 seconds
2169          * and thus just timeout if that happens and fail the setup
2170          * of this device.
2171          */
2172         err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
2173                                   TASK_INTERRUPTIBLE,
2174                                   msecs_to_jiffies(5000));
2175         if (err == 1) {
2176                 BT_ERR("%s: Firmware loading interrupted", hdev->name);
2177                 err = -EINTR;
2178                 goto done;
2179         }
2180
2181         if (err) {
2182                 BT_ERR("%s: Firmware loading timeout", hdev->name);
2183                 err = -ETIMEDOUT;
2184                 goto done;
2185         }
2186
2187         if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) {
2188                 BT_ERR("%s: Firmware loading failed", hdev->name);
2189                 err = -ENOEXEC;
2190                 goto done;
2191         }
2192
2193         rettime = ktime_get();
2194         delta = ktime_sub(rettime, calltime);
2195         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2196
2197         BT_INFO("%s: Firmware loaded in %llu usecs", hdev->name, duration);
2198
2199 done:
2200         release_firmware(fw);
2201
2202         if (err < 0)
2203                 return err;
2204
2205         calltime = ktime_get();
2206
2207         set_bit(BTUSB_BOOTING, &data->flags);
2208
2209         skb = __hci_cmd_sync(hdev, 0xfc01, sizeof(reset_param), reset_param,
2210                              HCI_INIT_TIMEOUT);
2211         if (IS_ERR(skb))
2212                 return PTR_ERR(skb);
2213
2214         kfree_skb(skb);
2215
2216         /* The bootloader will not indicate when the device is ready. This
2217          * is done by the operational firmware sending bootup notification.
2218          *
2219          * Booting into operational firmware should not take longer than
2220          * 1 second. However if that happens, then just fail the setup
2221          * since something went wrong.
2222          */
2223         BT_INFO("%s: Waiting for device to boot", hdev->name);
2224
2225         err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING,
2226                                   TASK_INTERRUPTIBLE,
2227                                   msecs_to_jiffies(1000));
2228
2229         if (err == 1) {
2230                 BT_ERR("%s: Device boot interrupted", hdev->name);
2231                 return -EINTR;
2232         }
2233
2234         if (err) {
2235                 BT_ERR("%s: Device boot timeout", hdev->name);
2236                 return -ETIMEDOUT;
2237         }
2238
2239         rettime = ktime_get();
2240         delta = ktime_sub(rettime, calltime);
2241         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2242
2243         BT_INFO("%s: Device booted in %llu usecs", hdev->name, duration);
2244
2245         clear_bit(BTUSB_BOOTLOADER, &data->flags);
2246
2247         return 0;
2248 }
2249
2250 static void btusb_hw_error_intel(struct hci_dev *hdev, u8 code)
2251 {
2252         struct sk_buff *skb;
2253         u8 type = 0x00;
2254
2255         BT_ERR("%s: Hardware error 0x%2.2x", hdev->name, code);
2256
2257         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2258         if (IS_ERR(skb)) {
2259                 BT_ERR("%s: Reset after hardware error failed (%ld)",
2260                        hdev->name, PTR_ERR(skb));
2261                 return;
2262         }
2263         kfree_skb(skb);
2264
2265         skb = __hci_cmd_sync(hdev, 0xfc22, 1, &type, HCI_INIT_TIMEOUT);
2266         if (IS_ERR(skb)) {
2267                 BT_ERR("%s: Retrieving Intel exception info failed (%ld)",
2268                        hdev->name, PTR_ERR(skb));
2269                 return;
2270         }
2271
2272         if (skb->len != 13) {
2273                 BT_ERR("%s: Exception info size mismatch", hdev->name);
2274                 kfree_skb(skb);
2275                 return;
2276         }
2277
2278         BT_ERR("%s: Exception info %s", hdev->name, (char *)(skb->data + 1));
2279
2280         kfree_skb(skb);
2281 }
2282
2283 static int btusb_shutdown_intel(struct hci_dev *hdev)
2284 {
2285         struct sk_buff *skb;
2286         long ret;
2287
2288         /* Some platforms have an issue with BT LED when the interface is
2289          * down or BT radio is turned off, which takes 5 seconds to BT LED
2290          * goes off. This command turns off the BT LED immediately.
2291          */
2292         skb = __hci_cmd_sync(hdev, 0xfc3f, 0, NULL, HCI_INIT_TIMEOUT);
2293         if (IS_ERR(skb)) {
2294                 ret = PTR_ERR(skb);
2295                 BT_ERR("%s: turning off Intel device LED failed (%ld)",
2296                        hdev->name, ret);
2297                 return ret;
2298         }
2299         kfree_skb(skb);
2300
2301         return 0;
2302 }
2303
2304 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
2305                                     const bdaddr_t *bdaddr)
2306 {
2307         struct sk_buff *skb;
2308         u8 buf[8];
2309         long ret;
2310
2311         buf[0] = 0xfe;
2312         buf[1] = sizeof(bdaddr_t);
2313         memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
2314
2315         skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2316         if (IS_ERR(skb)) {
2317                 ret = PTR_ERR(skb);
2318                 BT_ERR("%s: changing Marvell device address failed (%ld)",
2319                        hdev->name, ret);
2320                 return ret;
2321         }
2322         kfree_skb(skb);
2323
2324         return 0;
2325 }
2326
2327 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
2328                                     const bdaddr_t *bdaddr)
2329 {
2330         struct sk_buff *skb;
2331         u8 buf[10];
2332         long ret;
2333
2334         buf[0] = 0x01;
2335         buf[1] = 0x01;
2336         buf[2] = 0x00;
2337         buf[3] = sizeof(bdaddr_t);
2338         memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
2339
2340         skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2341         if (IS_ERR(skb)) {
2342                 ret = PTR_ERR(skb);
2343                 BT_ERR("%s: Change address command failed (%ld)",
2344                        hdev->name, ret);
2345                 return ret;
2346         }
2347         kfree_skb(skb);
2348
2349         return 0;
2350 }
2351
2352 #define QCA_DFU_PACKET_LEN      4096
2353
2354 #define QCA_GET_TARGET_VERSION  0x09
2355 #define QCA_CHECK_STATUS        0x05
2356 #define QCA_DFU_DOWNLOAD        0x01
2357
2358 #define QCA_SYSCFG_UPDATED      0x40
2359 #define QCA_PATCH_UPDATED       0x80
2360 #define QCA_DFU_TIMEOUT         3000
2361
2362 struct qca_version {
2363         __le32  rom_version;
2364         __le32  patch_version;
2365         __le32  ram_version;
2366         __le32  ref_clock;
2367         __u8    reserved[4];
2368 } __packed;
2369
2370 struct qca_rampatch_version {
2371         __le16  rom_version;
2372         __le16  patch_version;
2373 } __packed;
2374
2375 struct qca_device_info {
2376         u32     rom_version;
2377         u8      rampatch_hdr;   /* length of header in rampatch */
2378         u8      nvm_hdr;        /* length of header in NVM */
2379         u8      ver_offset;     /* offset of version structure in rampatch */
2380 };
2381
2382 static const struct qca_device_info qca_devices_table[] = {
2383         { 0x00000100, 20, 4, 10 }, /* Rome 1.0 */
2384         { 0x00000101, 20, 4, 10 }, /* Rome 1.1 */
2385         { 0x00000201, 28, 4, 18 }, /* Rome 2.1 */
2386         { 0x00000300, 28, 4, 18 }, /* Rome 3.0 */
2387         { 0x00000302, 28, 4, 18 }, /* Rome 3.2 */
2388 };
2389
2390 static int btusb_qca_send_vendor_req(struct hci_dev *hdev, u8 request,
2391                                      void *data, u16 size)
2392 {
2393         struct btusb_data *btdata = hci_get_drvdata(hdev);
2394         struct usb_device *udev = btdata->udev;
2395         int pipe, err;
2396         u8 *buf;
2397
2398         buf = kmalloc(size, GFP_KERNEL);
2399         if (!buf)
2400                 return -ENOMEM;
2401
2402         /* Found some of USB hosts have IOT issues with ours so that we should
2403          * not wait until HCI layer is ready.
2404          */
2405         pipe = usb_rcvctrlpipe(udev, 0);
2406         err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
2407                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2408         if (err < 0) {
2409                 BT_ERR("%s: Failed to access otp area (%d)", hdev->name, err);
2410                 goto done;
2411         }
2412
2413         memcpy(data, buf, size);
2414
2415 done:
2416         kfree(buf);
2417
2418         return err;
2419 }
2420
2421 static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
2422                                        const struct firmware *firmware,
2423                                        size_t hdr_size)
2424 {
2425         struct btusb_data *btdata = hci_get_drvdata(hdev);
2426         struct usb_device *udev = btdata->udev;
2427         size_t count, size, sent = 0;
2428         int pipe, len, err;
2429         u8 *buf;
2430
2431         buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
2432         if (!buf)
2433                 return -ENOMEM;
2434
2435         count = firmware->size;
2436
2437         size = min_t(size_t, count, hdr_size);
2438         memcpy(buf, firmware->data, size);
2439
2440         /* USB patches should go down to controller through USB path
2441          * because binary format fits to go down through USB channel.
2442          * USB control path is for patching headers and USB bulk is for
2443          * patch body.
2444          */
2445         pipe = usb_sndctrlpipe(udev, 0);
2446         err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
2447                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2448         if (err < 0) {
2449                 BT_ERR("%s: Failed to send headers (%d)", hdev->name, err);
2450                 goto done;
2451         }
2452
2453         sent += size;
2454         count -= size;
2455
2456         while (count) {
2457                 size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
2458
2459                 memcpy(buf, firmware->data + sent, size);
2460
2461                 pipe = usb_sndbulkpipe(udev, 0x02);
2462                 err = usb_bulk_msg(udev, pipe, buf, size, &len,
2463                                    QCA_DFU_TIMEOUT);
2464                 if (err < 0) {
2465                         BT_ERR("%s: Failed to send body at %zd of %zd (%d)",
2466                                hdev->name, sent, firmware->size, err);
2467                         break;
2468                 }
2469
2470                 if (size != len) {
2471                         BT_ERR("%s: Failed to get bulk buffer", hdev->name);
2472                         err = -EILSEQ;
2473                         break;
2474                 }
2475
2476                 sent  += size;
2477                 count -= size;
2478         }
2479
2480 done:
2481         kfree(buf);
2482         return err;
2483 }
2484
2485 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
2486                                          struct qca_version *ver,
2487                                          const struct qca_device_info *info)
2488 {
2489         struct qca_rampatch_version *rver;
2490         const struct firmware *fw;
2491         u32 ver_rom, ver_patch;
2492         u16 rver_rom, rver_patch;
2493         char fwname[64];
2494         int err;
2495
2496         ver_rom = le32_to_cpu(ver->rom_version);
2497         ver_patch = le32_to_cpu(ver->patch_version);
2498
2499         snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom);
2500
2501         err = request_firmware(&fw, fwname, &hdev->dev);
2502         if (err) {
2503                 BT_ERR("%s: failed to request rampatch file: %s (%d)",
2504                        hdev->name, fwname, err);
2505                 return err;
2506         }
2507
2508         BT_INFO("%s: using rampatch file: %s", hdev->name, fwname);
2509
2510         rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
2511         rver_rom = le16_to_cpu(rver->rom_version);
2512         rver_patch = le16_to_cpu(rver->patch_version);
2513
2514         BT_INFO("%s: QCA: patch rome 0x%x build 0x%x, firmware rome 0x%x "
2515                 "build 0x%x", hdev->name, rver_rom, rver_patch, ver_rom,
2516                 ver_patch);
2517
2518         if (rver_rom != ver_rom || rver_patch <= ver_patch) {
2519                 BT_ERR("%s: rampatch file version did not match with firmware",
2520                        hdev->name);
2521                 err = -EINVAL;
2522                 goto done;
2523         }
2524
2525         err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
2526
2527 done:
2528         release_firmware(fw);
2529
2530         return err;
2531 }
2532
2533 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
2534                                     struct qca_version *ver,
2535                                     const struct qca_device_info *info)
2536 {
2537         const struct firmware *fw;
2538         char fwname[64];
2539         int err;
2540
2541         snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x.bin",
2542                  le32_to_cpu(ver->rom_version));
2543
2544         err = request_firmware(&fw, fwname, &hdev->dev);
2545         if (err) {
2546                 BT_ERR("%s: failed to request NVM file: %s (%d)",
2547                        hdev->name, fwname, err);
2548                 return err;
2549         }
2550
2551         BT_INFO("%s: using NVM file: %s", hdev->name, fwname);
2552
2553         err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
2554
2555         release_firmware(fw);
2556
2557         return err;
2558 }
2559
2560 static int btusb_setup_qca(struct hci_dev *hdev)
2561 {
2562         const struct qca_device_info *info = NULL;
2563         struct qca_version ver;
2564         u32 ver_rom;
2565         u8 status;
2566         int i, err;
2567
2568         err = btusb_qca_send_vendor_req(hdev, QCA_GET_TARGET_VERSION, &ver,
2569                                         sizeof(ver));
2570         if (err < 0)
2571                 return err;
2572
2573         ver_rom = le32_to_cpu(ver.rom_version);
2574         for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
2575                 if (ver_rom == qca_devices_table[i].rom_version)
2576                         info = &qca_devices_table[i];
2577         }
2578         if (!info) {
2579                 BT_ERR("%s: don't support firmware rome 0x%x", hdev->name,
2580                        ver_rom);
2581                 return -ENODEV;
2582         }
2583
2584         err = btusb_qca_send_vendor_req(hdev, QCA_CHECK_STATUS, &status,
2585                                         sizeof(status));
2586         if (err < 0)
2587                 return err;
2588
2589         if (!(status & QCA_PATCH_UPDATED)) {
2590                 err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
2591                 if (err < 0)
2592                         return err;
2593         }
2594
2595         if (!(status & QCA_SYSCFG_UPDATED)) {
2596                 err = btusb_setup_qca_load_nvm(hdev, &ver, info);
2597                 if (err < 0)
2598                         return err;
2599         }
2600
2601         return 0;
2602 }
2603
2604 static int btusb_probe(struct usb_interface *intf,
2605                        const struct usb_device_id *id)
2606 {
2607         struct usb_endpoint_descriptor *ep_desc;
2608         struct btusb_data *data;
2609         struct hci_dev *hdev;
2610         int i, err;
2611
2612         BT_DBG("intf %p id %p", intf, id);
2613
2614         /* interface numbers are hardcoded in the spec */
2615         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
2616                 return -ENODEV;
2617
2618         if (!id->driver_info) {
2619                 const struct usb_device_id *match;
2620
2621                 match = usb_match_id(intf, blacklist_table);
2622                 if (match)
2623                         id = match;
2624         }
2625
2626         if (id->driver_info == BTUSB_IGNORE)
2627                 return -ENODEV;
2628
2629         if (id->driver_info & BTUSB_ATH3012) {
2630                 struct usb_device *udev = interface_to_usbdev(intf);
2631
2632                 /* Old firmware would otherwise let ath3k driver load
2633                  * patch and sysconfig files */
2634                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
2635                         return -ENODEV;
2636         }
2637
2638         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
2639         if (!data)
2640                 return -ENOMEM;
2641
2642         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2643                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2644
2645                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
2646                         data->intr_ep = ep_desc;
2647                         continue;
2648                 }
2649
2650                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
2651                         data->bulk_tx_ep = ep_desc;
2652                         continue;
2653                 }
2654
2655                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
2656                         data->bulk_rx_ep = ep_desc;
2657                         continue;
2658                 }
2659         }
2660
2661         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
2662                 return -ENODEV;
2663
2664         if (id->driver_info & BTUSB_AMP) {
2665                 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
2666                 data->cmdreq = 0x2b;
2667         } else {
2668                 data->cmdreq_type = USB_TYPE_CLASS;
2669                 data->cmdreq = 0x00;
2670         }
2671
2672         data->udev = interface_to_usbdev(intf);
2673         data->intf = intf;
2674
2675         INIT_WORK(&data->work, btusb_work);
2676         INIT_WORK(&data->waker, btusb_waker);
2677         init_usb_anchor(&data->deferred);
2678         init_usb_anchor(&data->tx_anchor);
2679         spin_lock_init(&data->txlock);
2680
2681         init_usb_anchor(&data->intr_anchor);
2682         init_usb_anchor(&data->bulk_anchor);
2683         init_usb_anchor(&data->isoc_anchor);
2684         spin_lock_init(&data->rxlock);
2685
2686         if (id->driver_info & BTUSB_INTEL_NEW) {
2687                 data->recv_event = btusb_recv_event_intel;
2688                 data->recv_bulk = btusb_recv_bulk_intel;
2689                 set_bit(BTUSB_BOOTLOADER, &data->flags);
2690         } else {
2691                 data->recv_event = hci_recv_frame;
2692                 data->recv_bulk = btusb_recv_bulk;
2693         }
2694
2695         hdev = hci_alloc_dev();
2696         if (!hdev)
2697                 return -ENOMEM;
2698
2699         hdev->bus = HCI_USB;
2700         hci_set_drvdata(hdev, data);
2701
2702         if (id->driver_info & BTUSB_AMP)
2703                 hdev->dev_type = HCI_AMP;
2704         else
2705                 hdev->dev_type = HCI_BREDR;
2706
2707         data->hdev = hdev;
2708
2709         SET_HCIDEV_DEV(hdev, &intf->dev);
2710
2711         hdev->open   = btusb_open;
2712         hdev->close  = btusb_close;
2713         hdev->flush  = btusb_flush;
2714         hdev->send   = btusb_send_frame;
2715         hdev->notify = btusb_notify;
2716
2717         if (id->driver_info & BTUSB_BCM92035)
2718                 hdev->setup = btusb_setup_bcm92035;
2719
2720 #ifdef CONFIG_BT_HCIBTUSB_BCM
2721         if (id->driver_info & BTUSB_BCM_PATCHRAM) {
2722                 hdev->setup = btbcm_setup_patchram;
2723                 hdev->set_bdaddr = btbcm_set_bdaddr;
2724         }
2725
2726         if (id->driver_info & BTUSB_BCM_APPLE)
2727                 hdev->setup = btbcm_setup_apple;
2728 #endif
2729
2730         if (id->driver_info & BTUSB_INTEL) {
2731                 hdev->setup = btusb_setup_intel;
2732                 hdev->shutdown = btusb_shutdown_intel;
2733                 hdev->set_bdaddr = btintel_set_bdaddr;
2734                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2735                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
2736         }
2737
2738         if (id->driver_info & BTUSB_INTEL_NEW) {
2739                 hdev->send = btusb_send_frame_intel;
2740                 hdev->setup = btusb_setup_intel_new;
2741                 hdev->hw_error = btusb_hw_error_intel;
2742                 hdev->set_bdaddr = btintel_set_bdaddr;
2743                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2744         }
2745
2746         if (id->driver_info & BTUSB_MARVELL)
2747                 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
2748
2749         if (id->driver_info & BTUSB_SWAVE) {
2750                 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
2751                 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
2752         }
2753
2754         if (id->driver_info & BTUSB_INTEL_BOOT)
2755                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
2756
2757         if (id->driver_info & BTUSB_ATH3012) {
2758                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
2759                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
2760                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2761         }
2762
2763         if (id->driver_info & BTUSB_QCA_ROME) {
2764                 data->setup_on_usb = btusb_setup_qca;
2765                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
2766         }
2767
2768 #ifdef CONFIG_BT_HCIBTUSB_RTL
2769         if (id->driver_info & BTUSB_REALTEK)
2770                 hdev->setup = btrtl_setup_realtek;
2771 #endif
2772
2773         if (id->driver_info & BTUSB_AMP) {
2774                 /* AMP controllers do not support SCO packets */
2775                 data->isoc = NULL;
2776         } else {
2777                 /* Interface numbers are hardcoded in the specification */
2778                 data->isoc = usb_ifnum_to_if(data->udev, 1);
2779         }
2780
2781         if (!reset)
2782                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2783
2784         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
2785                 if (!disable_scofix)
2786                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
2787         }
2788
2789         if (id->driver_info & BTUSB_BROKEN_ISOC)
2790                 data->isoc = NULL;
2791
2792         if (id->driver_info & BTUSB_DIGIANSWER) {
2793                 data->cmdreq_type = USB_TYPE_VENDOR;
2794                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2795         }
2796
2797         if (id->driver_info & BTUSB_CSR) {
2798                 struct usb_device *udev = data->udev;
2799                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
2800
2801                 /* Old firmware would otherwise execute USB reset */
2802                 if (bcdDevice < 0x117)
2803                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2804
2805                 /* Fake CSR devices with broken commands */
2806                 if (bcdDevice <= 0x100)
2807                         hdev->setup = btusb_setup_csr;
2808
2809                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
2810         }
2811
2812         if (id->driver_info & BTUSB_SNIFFER) {
2813                 struct usb_device *udev = data->udev;
2814
2815                 /* New sniffer firmware has crippled HCI interface */
2816                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
2817                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
2818         }
2819
2820         if (id->driver_info & BTUSB_INTEL_BOOT) {
2821                 /* A bug in the bootloader causes that interrupt interface is
2822                  * only enabled after receiving SetInterface(0, AltSetting=0).
2823                  */
2824                 err = usb_set_interface(data->udev, 0, 0);
2825                 if (err < 0) {
2826                         BT_ERR("failed to set interface 0, alt 0 %d", err);
2827                         hci_free_dev(hdev);
2828                         return err;
2829                 }
2830         }
2831
2832         if (data->isoc) {
2833                 err = usb_driver_claim_interface(&btusb_driver,
2834                                                  data->isoc, data);
2835                 if (err < 0) {
2836                         hci_free_dev(hdev);
2837                         return err;
2838                 }
2839         }
2840
2841         err = hci_register_dev(hdev);
2842         if (err < 0) {
2843                 hci_free_dev(hdev);
2844                 return err;
2845         }
2846
2847         usb_set_intfdata(intf, data);
2848
2849         return 0;
2850 }
2851
2852 static void btusb_disconnect(struct usb_interface *intf)
2853 {
2854         struct btusb_data *data = usb_get_intfdata(intf);
2855         struct hci_dev *hdev;
2856
2857         BT_DBG("intf %p", intf);
2858
2859         if (!data)
2860                 return;
2861
2862         hdev = data->hdev;
2863         usb_set_intfdata(data->intf, NULL);
2864
2865         if (data->isoc)
2866                 usb_set_intfdata(data->isoc, NULL);
2867
2868         hci_unregister_dev(hdev);
2869
2870         if (intf == data->isoc)
2871                 usb_driver_release_interface(&btusb_driver, data->intf);
2872         else if (data->isoc)
2873                 usb_driver_release_interface(&btusb_driver, data->isoc);
2874
2875         hci_free_dev(hdev);
2876 }
2877
2878 #ifdef CONFIG_PM
2879 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
2880 {
2881         struct btusb_data *data = usb_get_intfdata(intf);
2882
2883         BT_DBG("intf %p", intf);
2884
2885         if (data->suspend_count++)
2886                 return 0;
2887
2888         spin_lock_irq(&data->txlock);
2889         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
2890                 set_bit(BTUSB_SUSPENDING, &data->flags);
2891                 spin_unlock_irq(&data->txlock);
2892         } else {
2893                 spin_unlock_irq(&data->txlock);
2894                 data->suspend_count--;
2895                 return -EBUSY;
2896         }
2897
2898         cancel_work_sync(&data->work);
2899
2900         btusb_stop_traffic(data);
2901         usb_kill_anchored_urbs(&data->tx_anchor);
2902
2903         return 0;
2904 }
2905
2906 static void play_deferred(struct btusb_data *data)
2907 {
2908         struct urb *urb;
2909         int err;
2910
2911         while ((urb = usb_get_from_anchor(&data->deferred))) {
2912                 err = usb_submit_urb(urb, GFP_ATOMIC);
2913                 if (err < 0)
2914                         break;
2915
2916                 data->tx_in_flight++;
2917         }
2918         usb_scuttle_anchored_urbs(&data->deferred);
2919 }
2920
2921 static int btusb_resume(struct usb_interface *intf)
2922 {
2923         struct btusb_data *data = usb_get_intfdata(intf);
2924         struct hci_dev *hdev = data->hdev;
2925         int err = 0;
2926
2927         BT_DBG("intf %p", intf);
2928
2929         if (--data->suspend_count)
2930                 return 0;
2931
2932         if (!test_bit(HCI_RUNNING, &hdev->flags))
2933                 goto done;
2934
2935         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
2936                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
2937                 if (err < 0) {
2938                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
2939                         goto failed;
2940                 }
2941         }
2942
2943         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
2944                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
2945                 if (err < 0) {
2946                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
2947                         goto failed;
2948                 }
2949
2950                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
2951         }
2952
2953         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
2954                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
2955                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
2956                 else
2957                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
2958         }
2959
2960         spin_lock_irq(&data->txlock);
2961         play_deferred(data);
2962         clear_bit(BTUSB_SUSPENDING, &data->flags);
2963         spin_unlock_irq(&data->txlock);
2964         schedule_work(&data->work);
2965
2966         return 0;
2967
2968 failed:
2969         usb_scuttle_anchored_urbs(&data->deferred);
2970 done:
2971         spin_lock_irq(&data->txlock);
2972         clear_bit(BTUSB_SUSPENDING, &data->flags);
2973         spin_unlock_irq(&data->txlock);
2974
2975         return err;
2976 }
2977 #endif
2978
2979 static struct usb_driver btusb_driver = {
2980         .name           = "btusb",
2981         .probe          = btusb_probe,
2982         .disconnect     = btusb_disconnect,
2983 #ifdef CONFIG_PM
2984         .suspend        = btusb_suspend,
2985         .resume         = btusb_resume,
2986 #endif
2987         .id_table       = btusb_table,
2988         .supports_autosuspend = 1,
2989         .disable_hub_initiated_lpm = 1,
2990 };
2991
2992 module_usb_driver(btusb_driver);
2993
2994 module_param(disable_scofix, bool, 0644);
2995 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
2996
2997 module_param(force_scofix, bool, 0644);
2998 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
2999
3000 module_param(reset, bool, 0644);
3001 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
3002
3003 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
3004 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
3005 MODULE_VERSION(VERSION);
3006 MODULE_LICENSE("GPL");