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 = true;
  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         /* Generic Bluetooth USB interface */
  72         { USB_INTERFACE_INFO(0xe0, 0x01, 0x01) },
  73
  74         /* Apple-specific (Broadcom) devices */
  75         { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01),
  76           .driver_info = BTUSB_BCM_APPLE },
  77
  78         /* MediaTek MT76x0E */
  79         { USB_DEVICE(0x0e8d, 0x763f) },
  80
  81         /* Broadcom SoftSailing reporting vendor specific */
  82         { USB_DEVICE(0x0a5c, 0x21e1) },
  83
  84         /* Apple MacBookPro 7,1 */
  85         { USB_DEVICE(0x05ac, 0x8213) },
  86
  87         /* Apple iMac11,1 */
  88         { USB_DEVICE(0x05ac, 0x8215) },
  89
  90         /* Apple MacBookPro6,2 */
  91         { USB_DEVICE(0x05ac, 0x8218) },
  92
  93         /* Apple MacBookAir3,1, MacBookAir3,2 */
  94         { USB_DEVICE(0x05ac, 0x821b) },
  95
  96         /* Apple MacBookAir4,1 */
  97         { USB_DEVICE(0x05ac, 0x821f) },
  98
  99         /* Apple MacBookPro8,2 */
 100         { USB_DEVICE(0x05ac, 0x821a) },
 101
 102         /* Apple MacMini5,1 */
 103         { USB_DEVICE(0x05ac, 0x8281) },
 104
 105         /* AVM BlueFRITZ! USB v2.0 */
 106         { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE },
 107
 108         /* Bluetooth Ultraport Module from IBM */
 109         { USB_DEVICE(0x04bf, 0x030a) },
 110
 111         /* ALPS Modules with non-standard id */
 112         { USB_DEVICE(0x044e, 0x3001) },
 113         { USB_DEVICE(0x044e, 0x3002) },
 114
 115         /* Ericsson with non-standard id */
 116         { USB_DEVICE(0x0bdb, 0x1002) },
 117
 118         /* Canyon CN-BTU1 with HID interfaces */
 119         { USB_DEVICE(0x0c10, 0x0000) },
 120
 121         /* Broadcom BCM20702A0 */
 122         { USB_DEVICE(0x413c, 0x8197) },
 123
 124         /* Broadcom BCM20702B0 (Dynex/Insignia) */
 125         { USB_DEVICE(0x19ff, 0x0239), .driver_info = BTUSB_BCM_PATCHRAM },
 126
 127         /* Foxconn - Hon Hai */
 128         { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01),
 129           .driver_info = BTUSB_BCM_PATCHRAM },
 130
 131         /* Lite-On Technology - Broadcom based */
 132         { USB_VENDOR_AND_INTERFACE_INFO(0x04ca, 0xff, 0x01, 0x01),
 133           .driver_info = BTUSB_BCM_PATCHRAM },
 134
 135         /* Broadcom devices with vendor specific id */
 136         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
 137           .driver_info = BTUSB_BCM_PATCHRAM },
 138
 139         /* ASUSTek Computer - Broadcom based */
 140         { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01),
 141           .driver_info = BTUSB_BCM_PATCHRAM },
 142
 143         /* Belkin F8065bf - Broadcom based */
 144         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01),
 145           .driver_info = BTUSB_BCM_PATCHRAM },
 146
 147         /* IMC Networks - Broadcom based */
 148         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01),
 149           .driver_info = BTUSB_BCM_PATCHRAM },
 150
 151         /* Intel Bluetooth USB Bootloader (RAM module) */
 152         { USB_DEVICE(0x8087, 0x0a5a),
 153           .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
 154
 155         { }     /* Terminating entry */
 156 };
 157
 158 MODULE_DEVICE_TABLE(usb, btusb_table);
 159
 160 static const struct usb_device_id blacklist_table[] = {
 161         /* CSR BlueCore devices */
 162         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 163
 164         /* Broadcom BCM2033 without firmware */
 165         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 166
 167         /* Atheros 3011 with sflash firmware */
 168         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 169         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 170         { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE },
 171         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 172         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 173         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 174         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 175
 176         /* Atheros AR9285 Malbec with sflash firmware */
 177         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 178
 179         /* Atheros 3012 with sflash firmware */
 180         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 181         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 182         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 183         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 184         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 185         { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
 186         { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
 187         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 188         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 189         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 190         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 191         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 192         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 193         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 194         { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
 195         { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
 196         { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
 197         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 198         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 199         { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
 200         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 201         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 202         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 203         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 204         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 205         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
 206         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 207         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 208         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 209         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 210         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 211         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 212         { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 },
 213         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 214         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 215         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 216         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 217         { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
 218         { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
 219         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
 220         { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
 221
 222         /* Atheros AR5BBU12 with sflash firmware */
 223         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 224
 225         /* Atheros AR5BBU12 with sflash firmware */
 226         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 227         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 228
 229         /* QCA ROME chipset */
 230         { USB_DEVICE(0x0cf3, 0xe007), .driver_info = BTUSB_QCA_ROME },
 231         { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME },
 232         { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME },
 233
 234         /* Broadcom BCM2035 */
 235         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 236         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 237         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 238
 239         /* Broadcom BCM2045 */
 240         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 241         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 242
 243         /* IBM/Lenovo ThinkPad with Broadcom chip */
 244         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 245         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 246
 247         /* HP laptop with Broadcom chip */
 248         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 249
 250         /* Dell laptop with Broadcom chip */
 251         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 252
 253         /* Dell Wireless 370 and 410 devices */
 254         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 255         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 256
 257         /* Belkin F8T012 and F8T013 devices */
 258         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 259         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 260
 261         /* Asus WL-BTD202 device */
 262         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 263
 264         /* Kensington Bluetooth USB adapter */
 265         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 266
 267         /* RTX Telecom based adapters with buggy SCO support */
 268         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 269         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 270
 271         /* CONWISE Technology based adapters with buggy SCO support */
 272         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 273
 274         /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
 275         { USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE },
 276
 277         /* Digianswer devices */
 278         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 279         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 280
 281         /* CSR BlueCore Bluetooth Sniffer */
 282         { USB_DEVICE(0x0a12, 0x0002),
 283           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 284
 285         /* Frontline ComProbe Bluetooth Sniffer */
 286         { USB_DEVICE(0x16d3, 0x0002),
 287           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 288
 289         /* Marvell Bluetooth devices */
 290         { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
 291         { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
 292
 293         /* Intel Bluetooth devices */
 294         { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR },
 295         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 296         { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
 297         { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_NEW },
 298
 299         /* Other Intel Bluetooth devices */
 300         { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01),
 301           .driver_info = BTUSB_IGNORE },
 302
 303         /* Realtek Bluetooth devices */
 304         { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01),
 305           .driver_info = BTUSB_REALTEK },
 306
 307         /* Additional Realtek 8723AE Bluetooth devices */
 308         { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK },
 309         { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK },
 310
 311         /* Additional Realtek 8723BE Bluetooth devices */
 312         { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK },
 313         { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK },
 314         { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
 315         { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
 316         { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },
 317
 318         /* Additional Realtek 8821AE Bluetooth devices */
 319         { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
 320         { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },
 321         { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK },
 322         { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK },
 323         { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK },
 324
 325         /* Silicon Wave based devices */
 326         { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE },
 327
 328         { }     /* Terminating entry */
 329 };
 330
 331 #define BTUSB_MAX_ISOC_FRAMES   10
 332
 333 #define BTUSB_INTR_RUNNING      0
 334 #define BTUSB_BULK_RUNNING      1
 335 #define BTUSB_ISOC_RUNNING      2
 336 #define BTUSB_SUSPENDING        3
 337 #define BTUSB_DID_ISO_RESUME    4
 338 #define BTUSB_BOOTLOADER        5
 339 #define BTUSB_DOWNLOADING       6
 340 #define BTUSB_FIRMWARE_LOADED   7
 341 #define BTUSB_FIRMWARE_FAILED   8
 342 #define BTUSB_BOOTING           9
 343 #define BTUSB_RESET_RESUME      10
 344
 345 struct btusb_data {
 346         struct hci_dev       *hdev;
 347         struct usb_device    *udev;
 348         struct usb_interface *intf;
 349         struct usb_interface *isoc;
 350
 351         unsigned long flags;
 352
 353         struct work_struct work;
 354         struct work_struct waker;
 355
 356         struct usb_anchor deferred;
 357         struct usb_anchor tx_anchor;
 358         int tx_in_flight;
 359         spinlock_t txlock;
 360
 361         struct usb_anchor intr_anchor;
 362         struct usb_anchor bulk_anchor;
 363         struct usb_anchor isoc_anchor;
 364         spinlock_t rxlock;
 365
 366         struct sk_buff *evt_skb;
 367         struct sk_buff *acl_skb;
 368         struct sk_buff *sco_skb;
 369
 370         struct usb_endpoint_descriptor *intr_ep;
 371         struct usb_endpoint_descriptor *bulk_tx_ep;
 372         struct usb_endpoint_descriptor *bulk_rx_ep;
 373         struct usb_endpoint_descriptor *isoc_tx_ep;
 374         struct usb_endpoint_descriptor *isoc_rx_ep;
 375
 376         __u8 cmdreq_type;
 377         __u8 cmdreq;
 378
 379         unsigned int sco_num;
 380         int isoc_altsetting;
 381         int suspend_count;
 382
 383         int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
 384         int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
 385
 386         int (*setup_on_usb)(struct hci_dev *hdev);
 387 };
 388
 389 static inline void btusb_free_frags(struct btusb_data *data)
 390 {
 391         unsigned long flags;
 392
 393         spin_lock_irqsave(&data->rxlock, flags);
 394
 395         kfree_skb(data->evt_skb);
 396         data->evt_skb = NULL;
 397
 398         kfree_skb(data->acl_skb);
 399         data->acl_skb = NULL;
 400
 401         kfree_skb(data->sco_skb);
 402         data->sco_skb = NULL;
 403
 404         spin_unlock_irqrestore(&data->rxlock, flags);
 405 }
 406
 407 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
 408 {
 409         struct sk_buff *skb;
 410         int err = 0;
 411
 412         spin_lock(&data->rxlock);
 413         skb = data->evt_skb;
 414
 415         while (count) {
 416                 int len;
 417
 418                 if (!skb) {
 419                         skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
 420                         if (!skb) {
 421                                 err = -ENOMEM;
 422                                 break;
 423                         }
 424
 425                         bt_cb(skb)->pkt_type = HCI_EVENT_PKT;
 426                         bt_cb(skb)->expect = HCI_EVENT_HDR_SIZE;
 427                 }
 428
 429                 len = min_t(uint, bt_cb(skb)->expect, count);
 430                 memcpy(skb_put(skb, len), buffer, len);
 431
 432                 count -= len;
 433                 buffer += len;
 434                 bt_cb(skb)->expect -= len;
 435
 436                 if (skb->len == HCI_EVENT_HDR_SIZE) {
 437                         /* Complete event header */
 438                         bt_cb(skb)->expect = hci_event_hdr(skb)->plen;
 439
 440                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 441                                 kfree_skb(skb);
 442                                 skb = NULL;
 443
 444                                 err = -EILSEQ;
 445                                 break;
 446                         }
 447                 }
 448
 449                 if (bt_cb(skb)->expect == 0) {
 450                         /* Complete frame */
 451                         data->recv_event(data->hdev, skb);
 452                         skb = NULL;
 453                 }
 454         }
 455
 456         data->evt_skb = skb;
 457         spin_unlock(&data->rxlock);
 458
 459         return err;
 460 }
 461
 462 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
 463 {
 464         struct sk_buff *skb;
 465         int err = 0;
 466
 467         spin_lock(&data->rxlock);
 468         skb = data->acl_skb;
 469
 470         while (count) {
 471                 int len;
 472
 473                 if (!skb) {
 474                         skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
 475                         if (!skb) {
 476                                 err = -ENOMEM;
 477                                 break;
 478                         }
 479
 480                         bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT;
 481                         bt_cb(skb)->expect = HCI_ACL_HDR_SIZE;
 482                 }
 483
 484                 len = min_t(uint, bt_cb(skb)->expect, count);
 485                 memcpy(skb_put(skb, len), buffer, len);
 486
 487                 count -= len;
 488                 buffer += len;
 489                 bt_cb(skb)->expect -= len;
 490
 491                 if (skb->len == HCI_ACL_HDR_SIZE) {
 492                         __le16 dlen = hci_acl_hdr(skb)->dlen;
 493
 494                         /* Complete ACL header */
 495                         bt_cb(skb)->expect = __le16_to_cpu(dlen);
 496
 497                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 498                                 kfree_skb(skb);
 499                                 skb = NULL;
 500
 501                                 err = -EILSEQ;
 502                                 break;
 503                         }
 504                 }
 505
 506                 if (bt_cb(skb)->expect == 0) {
 507                         /* Complete frame */
 508                         hci_recv_frame(data->hdev, skb);
 509                         skb = NULL;
 510                 }
 511         }
 512
 513         data->acl_skb = skb;
 514         spin_unlock(&data->rxlock);
 515
 516         return err;
 517 }
 518
 519 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
 520 {
 521         struct sk_buff *skb;
 522         int err = 0;
 523
 524         spin_lock(&data->rxlock);
 525         skb = data->sco_skb;
 526
 527         while (count) {
 528                 int len;
 529
 530                 if (!skb) {
 531                         skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
 532                         if (!skb) {
 533                                 err = -ENOMEM;
 534                                 break;
 535                         }
 536
 537                         bt_cb(skb)->pkt_type = HCI_SCODATA_PKT;
 538                         bt_cb(skb)->expect = HCI_SCO_HDR_SIZE;
 539                 }
 540
 541                 len = min_t(uint, bt_cb(skb)->expect, count);
 542                 memcpy(skb_put(skb, len), buffer, len);
 543
 544                 count -= len;
 545                 buffer += len;
 546                 bt_cb(skb)->expect -= len;
 547
 548                 if (skb->len == HCI_SCO_HDR_SIZE) {
 549                         /* Complete SCO header */
 550                         bt_cb(skb)->expect = hci_sco_hdr(skb)->dlen;
 551
 552                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 553                                 kfree_skb(skb);
 554                                 skb = NULL;
 555
 556                                 err = -EILSEQ;
 557                                 break;
 558                         }
 559                 }
 560
 561                 if (bt_cb(skb)->expect == 0) {
 562                         /* Complete frame */
 563                         hci_recv_frame(data->hdev, skb);
 564                         skb = NULL;
 565                 }
 566         }
 567
 568         data->sco_skb = skb;
 569         spin_unlock(&data->rxlock);
 570
 571         return err;
 572 }
 573
 574 static void btusb_intr_complete(struct urb *urb)
 575 {
 576         struct hci_dev *hdev = urb->context;
 577         struct btusb_data *data = hci_get_drvdata(hdev);
 578         int err;
 579
 580         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 581                urb->actual_length);
 582
 583         if (!test_bit(HCI_RUNNING, &hdev->flags))
 584                 return;
 585
 586         if (urb->status == 0) {
 587                 hdev->stat.byte_rx += urb->actual_length;
 588
 589                 if (btusb_recv_intr(data, urb->transfer_buffer,
 590                                     urb->actual_length) < 0) {
 591                         BT_ERR("%s corrupted event packet", hdev->name);
 592                         hdev->stat.err_rx++;
 593                 }
 594         } else if (urb->status == -ENOENT) {
 595                 /* Avoid suspend failed when usb_kill_urb */
 596                 return;
 597         }
 598
 599         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 600                 return;
 601
 602         usb_mark_last_busy(data->udev);
 603         usb_anchor_urb(urb, &data->intr_anchor);
 604
 605         err = usb_submit_urb(urb, GFP_ATOMIC);
 606         if (err < 0) {
 607                 /* -EPERM: urb is being killed;
 608                  * -ENODEV: device got disconnected */
 609                 if (err != -EPERM && err != -ENODEV)
 610                         BT_ERR("%s urb %p failed to resubmit (%d)",
 611                                hdev->name, urb, -err);
 612                 usb_unanchor_urb(urb);
 613         }
 614 }
 615
 616 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 617 {
 618         struct btusb_data *data = hci_get_drvdata(hdev);
 619         struct urb *urb;
 620         unsigned char *buf;
 621         unsigned int pipe;
 622         int err, size;
 623
 624         BT_DBG("%s", hdev->name);
 625
 626         if (!data->intr_ep)
 627                 return -ENODEV;
 628
 629         urb = usb_alloc_urb(0, mem_flags);
 630         if (!urb)
 631                 return -ENOMEM;
 632
 633         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 634
 635         buf = kmalloc(size, mem_flags);
 636         if (!buf) {
 637                 usb_free_urb(urb);
 638                 return -ENOMEM;
 639         }
 640
 641         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 642
 643         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 644                          btusb_intr_complete, hdev, data->intr_ep->bInterval);
 645
 646         urb->transfer_flags |= URB_FREE_BUFFER;
 647
 648         usb_anchor_urb(urb, &data->intr_anchor);
 649
 650         err = usb_submit_urb(urb, mem_flags);
 651         if (err < 0) {
 652                 if (err != -EPERM && err != -ENODEV)
 653                         BT_ERR("%s urb %p submission failed (%d)",
 654                                hdev->name, urb, -err);
 655                 usb_unanchor_urb(urb);
 656         }
 657
 658         usb_free_urb(urb);
 659
 660         return err;
 661 }
 662
 663 static void btusb_bulk_complete(struct urb *urb)
 664 {
 665         struct hci_dev *hdev = urb->context;
 666         struct btusb_data *data = hci_get_drvdata(hdev);
 667         int err;
 668
 669         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 670                urb->actual_length);
 671
 672         if (!test_bit(HCI_RUNNING, &hdev->flags))
 673                 return;
 674
 675         if (urb->status == 0) {
 676                 hdev->stat.byte_rx += urb->actual_length;
 677
 678                 if (data->recv_bulk(data, urb->transfer_buffer,
 679                                     urb->actual_length) < 0) {
 680                         BT_ERR("%s corrupted ACL packet", hdev->name);
 681                         hdev->stat.err_rx++;
 682                 }
 683         } else if (urb->status == -ENOENT) {
 684                 /* Avoid suspend failed when usb_kill_urb */
 685                 return;
 686         }
 687
 688         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 689                 return;
 690
 691         usb_anchor_urb(urb, &data->bulk_anchor);
 692         usb_mark_last_busy(data->udev);
 693
 694         err = usb_submit_urb(urb, GFP_ATOMIC);
 695         if (err < 0) {
 696                 /* -EPERM: urb is being killed;
 697                  * -ENODEV: device got disconnected */
 698                 if (err != -EPERM && err != -ENODEV)
 699                         BT_ERR("%s urb %p failed to resubmit (%d)",
 700                                hdev->name, urb, -err);
 701                 usb_unanchor_urb(urb);
 702         }
 703 }
 704
 705 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 706 {
 707         struct btusb_data *data = hci_get_drvdata(hdev);
 708         struct urb *urb;
 709         unsigned char *buf;
 710         unsigned int pipe;
 711         int err, size = HCI_MAX_FRAME_SIZE;
 712
 713         BT_DBG("%s", hdev->name);
 714
 715         if (!data->bulk_rx_ep)
 716                 return -ENODEV;
 717
 718         urb = usb_alloc_urb(0, mem_flags);
 719         if (!urb)
 720                 return -ENOMEM;
 721
 722         buf = kmalloc(size, mem_flags);
 723         if (!buf) {
 724                 usb_free_urb(urb);
 725                 return -ENOMEM;
 726         }
 727
 728         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 729
 730         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
 731                           btusb_bulk_complete, hdev);
 732
 733         urb->transfer_flags |= URB_FREE_BUFFER;
 734
 735         usb_mark_last_busy(data->udev);
 736         usb_anchor_urb(urb, &data->bulk_anchor);
 737
 738         err = usb_submit_urb(urb, mem_flags);
 739         if (err < 0) {
 740                 if (err != -EPERM && err != -ENODEV)
 741                         BT_ERR("%s urb %p submission failed (%d)",
 742                                hdev->name, urb, -err);
 743                 usb_unanchor_urb(urb);
 744         }
 745
 746         usb_free_urb(urb);
 747
 748         return err;
 749 }
 750
 751 static void btusb_isoc_complete(struct urb *urb)
 752 {
 753         struct hci_dev *hdev = urb->context;
 754         struct btusb_data *data = hci_get_drvdata(hdev);
 755         int i, err;
 756
 757         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 758                urb->actual_length);
 759
 760         if (!test_bit(HCI_RUNNING, &hdev->flags))
 761                 return;
 762
 763         if (urb->status == 0) {
 764                 for (i = 0; i < urb->number_of_packets; i++) {
 765                         unsigned int offset = urb->iso_frame_desc[i].offset;
 766                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 767
 768                         if (urb->iso_frame_desc[i].status)
 769                                 continue;
 770
 771                         hdev->stat.byte_rx += length;
 772
 773                         if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
 774                                             length) < 0) {
 775                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 776                                 hdev->stat.err_rx++;
 777                         }
 778                 }
 779         } else if (urb->status == -ENOENT) {
 780                 /* Avoid suspend failed when usb_kill_urb */
 781                 return;
 782         }
 783
 784         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 785                 return;
 786
 787         usb_anchor_urb(urb, &data->isoc_anchor);
 788
 789         err = usb_submit_urb(urb, GFP_ATOMIC);
 790         if (err < 0) {
 791                 /* -EPERM: urb is being killed;
 792                  * -ENODEV: device got disconnected */
 793                 if (err != -EPERM && err != -ENODEV)
 794                         BT_ERR("%s urb %p failed to resubmit (%d)",
 795                                hdev->name, urb, -err);
 796                 usb_unanchor_urb(urb);
 797         }
 798 }
 799
 800 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 801 {
 802         int i, offset = 0;
 803
 804         BT_DBG("len %d mtu %d", len, mtu);
 805
 806         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 807                                         i++, offset += mtu, len -= mtu) {
 808                 urb->iso_frame_desc[i].offset = offset;
 809                 urb->iso_frame_desc[i].length = mtu;
 810         }
 811
 812         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 813                 urb->iso_frame_desc[i].offset = offset;
 814                 urb->iso_frame_desc[i].length = len;
 815                 i++;
 816         }
 817
 818         urb->number_of_packets = i;
 819 }
 820
 821 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 822 {
 823         struct btusb_data *data = hci_get_drvdata(hdev);
 824         struct urb *urb;
 825         unsigned char *buf;
 826         unsigned int pipe;
 827         int err, size;
 828
 829         BT_DBG("%s", hdev->name);
 830
 831         if (!data->isoc_rx_ep)
 832                 return -ENODEV;
 833
 834         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 835         if (!urb)
 836                 return -ENOMEM;
 837
 838         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 839                                                 BTUSB_MAX_ISOC_FRAMES;
 840
 841         buf = kmalloc(size, mem_flags);
 842         if (!buf) {
 843                 usb_free_urb(urb);
 844                 return -ENOMEM;
 845         }
 846
 847         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 848
 849         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 850                          hdev, data->isoc_rx_ep->bInterval);
 851
 852         urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
 853
 854         __fill_isoc_descriptor(urb, size,
 855                                le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 856
 857         usb_anchor_urb(urb, &data->isoc_anchor);
 858
 859         err = usb_submit_urb(urb, mem_flags);
 860         if (err < 0) {
 861                 if (err != -EPERM && err != -ENODEV)
 862                         BT_ERR("%s urb %p submission failed (%d)",
 863                                hdev->name, urb, -err);
 864                 usb_unanchor_urb(urb);
 865         }
 866
 867         usb_free_urb(urb);
 868
 869         return err;
 870 }
 871
 872 static void btusb_tx_complete(struct urb *urb)
 873 {
 874         struct sk_buff *skb = urb->context;
 875         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
 876         struct btusb_data *data = hci_get_drvdata(hdev);
 877
 878         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 879                urb->actual_length);
 880
 881         if (!test_bit(HCI_RUNNING, &hdev->flags))
 882                 goto done;
 883
 884         if (!urb->status)
 885                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 886         else
 887                 hdev->stat.err_tx++;
 888
 889 done:
 890         spin_lock(&data->txlock);
 891         data->tx_in_flight--;
 892         spin_unlock(&data->txlock);
 893
 894         kfree(urb->setup_packet);
 895
 896         kfree_skb(skb);
 897 }
 898
 899 static void btusb_isoc_tx_complete(struct urb *urb)
 900 {
 901         struct sk_buff *skb = urb->context;
 902         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
 903
 904         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 905                urb->actual_length);
 906
 907         if (!test_bit(HCI_RUNNING, &hdev->flags))
 908                 goto done;
 909
 910         if (!urb->status)
 911                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 912         else
 913                 hdev->stat.err_tx++;
 914
 915 done:
 916         kfree(urb->setup_packet);
 917
 918         kfree_skb(skb);
 919 }
 920
 921 static int btusb_open(struct hci_dev *hdev)
 922 {
 923         struct btusb_data *data = hci_get_drvdata(hdev);
 924         int err;
 925
 926         BT_DBG("%s", hdev->name);
 927
 928         /* Patching USB firmware files prior to starting any URBs of HCI path
 929          * It is more safe to use USB bulk channel for downloading USB patch
 930          */
 931         if (data->setup_on_usb) {
 932                 err = data->setup_on_usb(hdev);
 933                 if (err < 0)
 934                         return err;
 935         }
 936
 937         err = usb_autopm_get_interface(data->intf);
 938         if (err < 0)
 939                 return err;
 940
 941         data->intf->needs_remote_wakeup = 1;
 942
 943         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 944                 goto done;
 945
 946         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 947                 goto done;
 948
 949         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 950         if (err < 0)
 951                 goto failed;
 952
 953         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 954         if (err < 0) {
 955                 usb_kill_anchored_urbs(&data->intr_anchor);
 956                 goto failed;
 957         }
 958
 959         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 960         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 961
 962 done:
 963         usb_autopm_put_interface(data->intf);
 964         return 0;
 965
 966 failed:
 967         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 968         clear_bit(HCI_RUNNING, &hdev->flags);
 969         usb_autopm_put_interface(data->intf);
 970         return err;
 971 }
 972
 973 static void btusb_stop_traffic(struct btusb_data *data)
 974 {
 975         usb_kill_anchored_urbs(&data->intr_anchor);
 976         usb_kill_anchored_urbs(&data->bulk_anchor);
 977         usb_kill_anchored_urbs(&data->isoc_anchor);
 978 }
 979
 980 static int btusb_close(struct hci_dev *hdev)
 981 {
 982         struct btusb_data *data = hci_get_drvdata(hdev);
 983         int err;
 984
 985         BT_DBG("%s", hdev->name);
 986
 987         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 988                 return 0;
 989
 990         cancel_work_sync(&data->work);
 991         cancel_work_sync(&data->waker);
 992
 993         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 994         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 995         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 996
 997         btusb_stop_traffic(data);
 998         btusb_free_frags(data);
 999
1000         err = usb_autopm_get_interface(data->intf);
1001         if (err < 0)
1002                 goto failed;
1003
1004         data->intf->needs_remote_wakeup = 0;
1005         usb_autopm_put_interface(data->intf);
1006
1007 failed:
1008         usb_scuttle_anchored_urbs(&data->deferred);
1009         return 0;
1010 }
1011
1012 static int btusb_flush(struct hci_dev *hdev)
1013 {
1014         struct btusb_data *data = hci_get_drvdata(hdev);
1015
1016         BT_DBG("%s", hdev->name);
1017
1018         usb_kill_anchored_urbs(&data->tx_anchor);
1019         btusb_free_frags(data);
1020
1021         return 0;
1022 }
1023
1024 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
1025 {
1026         struct btusb_data *data = hci_get_drvdata(hdev);
1027         struct usb_ctrlrequest *dr;
1028         struct urb *urb;
1029         unsigned int pipe;
1030
1031         urb = usb_alloc_urb(0, GFP_KERNEL);
1032         if (!urb)
1033                 return ERR_PTR(-ENOMEM);
1034
1035         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
1036         if (!dr) {
1037                 usb_free_urb(urb);
1038                 return ERR_PTR(-ENOMEM);
1039         }
1040
1041         dr->bRequestType = data->cmdreq_type;
1042         dr->bRequest     = data->cmdreq;
1043         dr->wIndex       = 0;
1044         dr->wValue       = 0;
1045         dr->wLength      = __cpu_to_le16(skb->len);
1046
1047         pipe = usb_sndctrlpipe(data->udev, 0x00);
1048
1049         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
1050                              skb->data, skb->len, btusb_tx_complete, skb);
1051
1052         skb->dev = (void *)hdev;
1053
1054         return urb;
1055 }
1056
1057 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
1058 {
1059         struct btusb_data *data = hci_get_drvdata(hdev);
1060         struct urb *urb;
1061         unsigned int pipe;
1062
1063         if (!data->bulk_tx_ep)
1064                 return ERR_PTR(-ENODEV);
1065
1066         urb = usb_alloc_urb(0, GFP_KERNEL);
1067         if (!urb)
1068                 return ERR_PTR(-ENOMEM);
1069
1070         pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1071
1072         usb_fill_bulk_urb(urb, data->udev, pipe,
1073                           skb->data, skb->len, btusb_tx_complete, skb);
1074
1075         skb->dev = (void *)hdev;
1076
1077         return urb;
1078 }
1079
1080 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1081 {
1082         struct btusb_data *data = hci_get_drvdata(hdev);
1083         struct urb *urb;
1084         unsigned int pipe;
1085
1086         if (!data->isoc_tx_ep)
1087                 return ERR_PTR(-ENODEV);
1088
1089         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1090         if (!urb)
1091                 return ERR_PTR(-ENOMEM);
1092
1093         pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1094
1095         usb_fill_int_urb(urb, data->udev, pipe,
1096                          skb->data, skb->len, btusb_isoc_tx_complete,
1097                          skb, data->isoc_tx_ep->bInterval);
1098
1099         urb->transfer_flags  = URB_ISO_ASAP;
1100
1101         __fill_isoc_descriptor(urb, skb->len,
1102                                le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1103
1104         skb->dev = (void *)hdev;
1105
1106         return urb;
1107 }
1108
1109 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1110 {
1111         struct btusb_data *data = hci_get_drvdata(hdev);
1112         int err;
1113
1114         usb_anchor_urb(urb, &data->tx_anchor);
1115
1116         err = usb_submit_urb(urb, GFP_KERNEL);
1117         if (err < 0) {
1118                 if (err != -EPERM && err != -ENODEV)
1119                         BT_ERR("%s urb %p submission failed (%d)",
1120                                hdev->name, urb, -err);
1121                 kfree(urb->setup_packet);
1122                 usb_unanchor_urb(urb);
1123         } else {
1124                 usb_mark_last_busy(data->udev);
1125         }
1126
1127         usb_free_urb(urb);
1128         return err;
1129 }
1130
1131 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1132 {
1133         struct btusb_data *data = hci_get_drvdata(hdev);
1134         unsigned long flags;
1135         bool suspending;
1136
1137         spin_lock_irqsave(&data->txlock, flags);
1138         suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1139         if (!suspending)
1140                 data->tx_in_flight++;
1141         spin_unlock_irqrestore(&data->txlock, flags);
1142
1143         if (!suspending)
1144                 return submit_tx_urb(hdev, urb);
1145
1146         usb_anchor_urb(urb, &data->deferred);
1147         schedule_work(&data->waker);
1148
1149         usb_free_urb(urb);
1150         return 0;
1151 }
1152
1153 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1154 {
1155         struct urb *urb;
1156
1157         BT_DBG("%s", hdev->name);
1158
1159         if (!test_bit(HCI_RUNNING, &hdev->flags))
1160                 return -EBUSY;
1161
1162         switch (bt_cb(skb)->pkt_type) {
1163         case HCI_COMMAND_PKT:
1164                 urb = alloc_ctrl_urb(hdev, skb);
1165                 if (IS_ERR(urb))
1166                         return PTR_ERR(urb);
1167
1168                 hdev->stat.cmd_tx++;
1169                 return submit_or_queue_tx_urb(hdev, urb);
1170
1171         case HCI_ACLDATA_PKT:
1172                 urb = alloc_bulk_urb(hdev, skb);
1173                 if (IS_ERR(urb))
1174                         return PTR_ERR(urb);
1175
1176                 hdev->stat.acl_tx++;
1177                 return submit_or_queue_tx_urb(hdev, urb);
1178
1179         case HCI_SCODATA_PKT:
1180                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1181                         return -ENODEV;
1182
1183                 urb = alloc_isoc_urb(hdev, skb);
1184                 if (IS_ERR(urb))
1185                         return PTR_ERR(urb);
1186
1187                 hdev->stat.sco_tx++;
1188                 return submit_tx_urb(hdev, urb);
1189         }
1190
1191         return -EILSEQ;
1192 }
1193
1194 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1195 {
1196         struct btusb_data *data = hci_get_drvdata(hdev);
1197
1198         BT_DBG("%s evt %d", hdev->name, evt);
1199
1200         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1201                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1202                 schedule_work(&data->work);
1203         }
1204 }
1205
1206 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1207 {
1208         struct btusb_data *data = hci_get_drvdata(hdev);
1209         struct usb_interface *intf = data->isoc;
1210         struct usb_endpoint_descriptor *ep_desc;
1211         int i, err;
1212
1213         if (!data->isoc)
1214                 return -ENODEV;
1215
1216         err = usb_set_interface(data->udev, 1, altsetting);
1217         if (err < 0) {
1218                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
1219                 return err;
1220         }
1221
1222         data->isoc_altsetting = altsetting;
1223
1224         data->isoc_tx_ep = NULL;
1225         data->isoc_rx_ep = NULL;
1226
1227         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1228                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1229
1230                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1231                         data->isoc_tx_ep = ep_desc;
1232                         continue;
1233                 }
1234
1235                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1236                         data->isoc_rx_ep = ep_desc;
1237                         continue;
1238                 }
1239         }
1240
1241         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1242                 BT_ERR("%s invalid SCO descriptors", hdev->name);
1243                 return -ENODEV;
1244         }
1245
1246         return 0;
1247 }
1248
1249 static void btusb_work(struct work_struct *work)
1250 {
1251         struct btusb_data *data = container_of(work, struct btusb_data, work);
1252         struct hci_dev *hdev = data->hdev;
1253         int new_alts;
1254         int err;
1255
1256         if (data->sco_num > 0) {
1257                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1258                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1259                         if (err < 0) {
1260                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1261                                 usb_kill_anchored_urbs(&data->isoc_anchor);
1262                                 return;
1263                         }
1264
1265                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1266                 }
1267
1268                 if (hdev->voice_setting & 0x0020) {
1269                         static const int alts[3] = { 2, 4, 5 };
1270
1271                         new_alts = alts[data->sco_num - 1];
1272                 } else {
1273                         new_alts = data->sco_num;
1274                 }
1275
1276                 if (data->isoc_altsetting != new_alts) {
1277                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1278                         usb_kill_anchored_urbs(&data->isoc_anchor);
1279
1280                         /* When isochronous alternate setting needs to be
1281                          * changed, because SCO connection has been added
1282                          * or removed, a packet fragment may be left in the
1283                          * reassembling state. This could lead to wrongly
1284                          * assembled fragments.
1285                          *
1286                          * Clear outstanding fragment when selecting a new
1287                          * alternate setting.
1288                          */
1289                         spin_lock(&data->rxlock);
1290                         kfree_skb(data->sco_skb);
1291                         data->sco_skb = NULL;
1292                         spin_unlock(&data->rxlock);
1293
1294                         if (__set_isoc_interface(hdev, new_alts) < 0)
1295                                 return;
1296                 }
1297
1298                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1299                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1300                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1301                         else
1302                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1303                 }
1304         } else {
1305                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1306                 usb_kill_anchored_urbs(&data->isoc_anchor);
1307
1308                 __set_isoc_interface(hdev, 0);
1309                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1310                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1311         }
1312 }
1313
1314 static void btusb_waker(struct work_struct *work)
1315 {
1316         struct btusb_data *data = container_of(work, struct btusb_data, waker);
1317         int err;
1318
1319         err = usb_autopm_get_interface(data->intf);
1320         if (err < 0)
1321                 return;
1322
1323         usb_autopm_put_interface(data->intf);
1324 }
1325
1326 static int btusb_setup_bcm92035(struct hci_dev *hdev)
1327 {
1328         struct sk_buff *skb;
1329         u8 val = 0x00;
1330
1331         BT_DBG("%s", hdev->name);
1332
1333         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1334         if (IS_ERR(skb))
1335                 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
1336         else
1337                 kfree_skb(skb);
1338
1339         return 0;
1340 }
1341
1342 static int btusb_setup_csr(struct hci_dev *hdev)
1343 {
1344         struct hci_rp_read_local_version *rp;
1345         struct sk_buff *skb;
1346
1347         BT_DBG("%s", hdev->name);
1348
1349         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1350                              HCI_INIT_TIMEOUT);
1351         if (IS_ERR(skb)) {
1352                 int err = PTR_ERR(skb);
1353                 BT_ERR("%s: CSR: Local version failed (%d)", hdev->name, err);
1354                 return err;
1355         }
1356
1357         if (skb->len != sizeof(struct hci_rp_read_local_version)) {
1358                 BT_ERR("%s: CSR: Local version length mismatch", hdev->name);
1359                 kfree_skb(skb);
1360                 return -EIO;
1361         }
1362
1363         rp = (struct hci_rp_read_local_version *)skb->data;
1364
1365         /* Detect controllers which aren't real CSR ones. */
1366         if (le16_to_cpu(rp->manufacturer) != 10 ||
1367             le16_to_cpu(rp->lmp_subver) == 0x0c5c) {
1368                 /* Clear the reset quirk since this is not an actual
1369                  * early Bluetooth 1.1 device from CSR.
1370                  */
1371                 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1372
1373                 /* These fake CSR controllers have all a broken
1374                  * stored link key handling and so just disable it.
1375                  */
1376                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
1377         }
1378
1379         kfree_skb(skb);
1380
1381         return 0;
1382 }
1383
1384 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1385                                                        struct intel_version *ver)
1386 {
1387         const struct firmware *fw;
1388         char fwname[64];
1389         int ret;
1390
1391         snprintf(fwname, sizeof(fwname),
1392                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1393                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
1394                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1395                  ver->fw_build_ww, ver->fw_build_yy);
1396
1397         ret = request_firmware(&fw, fwname, &hdev->dev);
1398         if (ret < 0) {
1399                 if (ret == -EINVAL) {
1400                         BT_ERR("%s Intel firmware file request failed (%d)",
1401                                hdev->name, ret);
1402                         return NULL;
1403                 }
1404
1405                 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1406                        hdev->name, fwname, ret);
1407
1408                 /* If the correct firmware patch file is not found, use the
1409                  * default firmware patch file instead
1410                  */
1411                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1412                          ver->hw_platform, ver->hw_variant);
1413                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1414                         BT_ERR("%s failed to open default Intel fw file: %s",
1415                                hdev->name, fwname);
1416                         return NULL;
1417                 }
1418         }
1419
1420         BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1421
1422         return fw;
1423 }
1424
1425 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1426                                       const struct firmware *fw,
1427                                       const u8 **fw_ptr, int *disable_patch)
1428 {
1429         struct sk_buff *skb;
1430         struct hci_command_hdr *cmd;
1431         const u8 *cmd_param;
1432         struct hci_event_hdr *evt = NULL;
1433         const u8 *evt_param = NULL;
1434         int remain = fw->size - (*fw_ptr - fw->data);
1435
1436         /* The first byte indicates the types of the patch command or event.
1437          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1438          * in the current firmware buffer doesn't start with 0x01 or
1439          * the size of remain buffer is smaller than HCI command header,
1440          * the firmware file is corrupted and it should stop the patching
1441          * process.
1442          */
1443         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1444                 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1445                 return -EINVAL;
1446         }
1447         (*fw_ptr)++;
1448         remain--;
1449
1450         cmd = (struct hci_command_hdr *)(*fw_ptr);
1451         *fw_ptr += sizeof(*cmd);
1452         remain -= sizeof(*cmd);
1453
1454         /* Ensure that the remain firmware data is long enough than the length
1455          * of command parameter. If not, the firmware file is corrupted.
1456          */
1457         if (remain < cmd->plen) {
1458                 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1459                 return -EFAULT;
1460         }
1461
1462         /* If there is a command that loads a patch in the firmware
1463          * file, then enable the patch upon success, otherwise just
1464          * disable the manufacturer mode, for example patch activation
1465          * is not required when the default firmware patch file is used
1466          * because there are no patch data to load.
1467          */
1468         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1469                 *disable_patch = 0;
1470
1471         cmd_param = *fw_ptr;
1472         *fw_ptr += cmd->plen;
1473         remain -= cmd->plen;
1474
1475         /* This reads the expected events when the above command is sent to the
1476          * device. Some vendor commands expects more than one events, for
1477          * example command status event followed by vendor specific event.
1478          * For this case, it only keeps the last expected event. so the command
1479          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1480          * last expected event.
1481          */
1482         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1483                 (*fw_ptr)++;
1484                 remain--;
1485
1486                 evt = (struct hci_event_hdr *)(*fw_ptr);
1487                 *fw_ptr += sizeof(*evt);
1488                 remain -= sizeof(*evt);
1489
1490                 if (remain < evt->plen) {
1491                         BT_ERR("%s Intel fw corrupted: invalid evt len",
1492                                hdev->name);
1493                         return -EFAULT;
1494                 }
1495
1496                 evt_param = *fw_ptr;
1497                 *fw_ptr += evt->plen;
1498                 remain -= evt->plen;
1499         }
1500
1501         /* Every HCI commands in the firmware file has its correspond event.
1502          * If event is not found or remain is smaller than zero, the firmware
1503          * file is corrupted.
1504          */
1505         if (!evt || !evt_param || remain < 0) {
1506                 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1507                 return -EFAULT;
1508         }
1509
1510         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1511                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1512         if (IS_ERR(skb)) {
1513                 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1514                        hdev->name, cmd->opcode, PTR_ERR(skb));
1515                 return PTR_ERR(skb);
1516         }
1517
1518         /* It ensures that the returned event matches the event data read from
1519          * the firmware file. At fist, it checks the length and then
1520          * the contents of the event.
1521          */
1522         if (skb->len != evt->plen) {
1523                 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1524                        le16_to_cpu(cmd->opcode));
1525                 kfree_skb(skb);
1526                 return -EFAULT;
1527         }
1528
1529         if (memcmp(skb->data, evt_param, evt->plen)) {
1530                 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1531                        hdev->name, le16_to_cpu(cmd->opcode));
1532                 kfree_skb(skb);
1533                 return -EFAULT;
1534         }
1535         kfree_skb(skb);
1536
1537         return 0;
1538 }
1539
1540 static int btusb_setup_intel(struct hci_dev *hdev)
1541 {
1542         struct sk_buff *skb;
1543         const struct firmware *fw;
1544         const u8 *fw_ptr;
1545         int disable_patch;
1546         struct intel_version *ver;
1547
1548         const u8 mfg_enable[] = { 0x01, 0x00 };
1549         const u8 mfg_disable[] = { 0x00, 0x00 };
1550         const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
1551         const u8 mfg_reset_activate[] = { 0x00, 0x02 };
1552
1553         BT_DBG("%s", hdev->name);
1554
1555         /* The controller has a bug with the first HCI command sent to it
1556          * returning number of completed commands as zero. This would stall the
1557          * command processing in the Bluetooth core.
1558          *
1559          * As a workaround, send HCI Reset command first which will reset the
1560          * number of completed commands and allow normal command processing
1561          * from now on.
1562          */
1563         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1564         if (IS_ERR(skb)) {
1565                 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1566                        hdev->name, PTR_ERR(skb));
1567                 return PTR_ERR(skb);
1568         }
1569         kfree_skb(skb);
1570
1571         /* Read Intel specific controller version first to allow selection of
1572          * which firmware file to load.
1573          *
1574          * The returned information are hardware variant and revision plus
1575          * firmware variant, revision and build number.
1576          */
1577         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1578         if (IS_ERR(skb)) {
1579                 BT_ERR("%s reading Intel fw version command failed (%ld)",
1580                        hdev->name, PTR_ERR(skb));
1581                 return PTR_ERR(skb);
1582         }
1583
1584         if (skb->len != sizeof(*ver)) {
1585                 BT_ERR("%s Intel version event length mismatch", hdev->name);
1586                 kfree_skb(skb);
1587                 return -EIO;
1588         }
1589
1590         ver = (struct intel_version *)skb->data;
1591
1592         BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1593                 hdev->name, ver->hw_platform, ver->hw_variant,
1594                 ver->hw_revision, ver->fw_variant,  ver->fw_revision,
1595                 ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
1596                 ver->fw_patch_num);
1597
1598         /* fw_patch_num indicates the version of patch the device currently
1599          * have. If there is no patch data in the device, it is always 0x00.
1600          * So, if it is other than 0x00, no need to patch the device again.
1601          */
1602         if (ver->fw_patch_num) {
1603                 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1604                         hdev->name, ver->fw_patch_num);
1605                 kfree_skb(skb);
1606                 btintel_check_bdaddr(hdev);
1607                 return 0;
1608         }
1609
1610         /* Opens the firmware patch file based on the firmware version read
1611          * from the controller. If it fails to open the matching firmware
1612          * patch file, it tries to open the default firmware patch file.
1613          * If no patch file is found, allow the device to operate without
1614          * a patch.
1615          */
1616         fw = btusb_setup_intel_get_fw(hdev, ver);
1617         if (!fw) {
1618                 kfree_skb(skb);
1619                 btintel_check_bdaddr(hdev);
1620                 return 0;
1621         }
1622         fw_ptr = fw->data;
1623
1624         kfree_skb(skb);
1625
1626         /* This Intel specific command enables the manufacturer mode of the
1627          * controller.
1628          *
1629          * Only while this mode is enabled, the driver can download the
1630          * firmware patch data and configuration parameters.
1631          */
1632         skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
1633         if (IS_ERR(skb)) {
1634                 BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
1635                        hdev->name, PTR_ERR(skb));
1636                 release_firmware(fw);
1637                 return PTR_ERR(skb);
1638         }
1639
1640         kfree_skb(skb);
1641
1642         disable_patch = 1;
1643
1644         /* The firmware data file consists of list of Intel specific HCI
1645          * commands and its expected events. The first byte indicates the
1646          * type of the message, either HCI command or HCI event.
1647          *
1648          * It reads the command and its expected event from the firmware file,
1649          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1650          * the returned event is compared with the event read from the firmware
1651          * file and it will continue until all the messages are downloaded to
1652          * the controller.
1653          *
1654          * Once the firmware patching is completed successfully,
1655          * the manufacturer mode is disabled with reset and activating the
1656          * downloaded patch.
1657          *
1658          * If the firmware patching fails, the manufacturer mode is
1659          * disabled with reset and deactivating the patch.
1660          *
1661          * If the default patch file is used, no reset is done when disabling
1662          * the manufacturer.
1663          */
1664         while (fw->size > fw_ptr - fw->data) {
1665                 int ret;
1666
1667                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1668                                                  &disable_patch);
1669                 if (ret < 0)
1670                         goto exit_mfg_deactivate;
1671         }
1672
1673         release_firmware(fw);
1674
1675         if (disable_patch)
1676                 goto exit_mfg_disable;
1677
1678         /* Patching completed successfully and disable the manufacturer mode
1679          * with reset and activate the downloaded firmware patches.
1680          */
1681         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
1682                              mfg_reset_activate, HCI_INIT_TIMEOUT);
1683         if (IS_ERR(skb)) {
1684                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1685                        hdev->name, PTR_ERR(skb));
1686                 return PTR_ERR(skb);
1687         }
1688         kfree_skb(skb);
1689
1690         BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1691                 hdev->name);
1692
1693         btintel_check_bdaddr(hdev);
1694         return 0;
1695
1696 exit_mfg_disable:
1697         /* Disable the manufacturer mode without reset */
1698         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
1699                              HCI_INIT_TIMEOUT);
1700         if (IS_ERR(skb)) {
1701                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1702                        hdev->name, PTR_ERR(skb));
1703                 return PTR_ERR(skb);
1704         }
1705         kfree_skb(skb);
1706
1707         BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1708
1709         btintel_check_bdaddr(hdev);
1710         return 0;
1711
1712 exit_mfg_deactivate:
1713         release_firmware(fw);
1714
1715         /* Patching failed. Disable the manufacturer mode with reset and
1716          * deactivate the downloaded firmware patches.
1717          */
1718         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
1719                              mfg_reset_deactivate, HCI_INIT_TIMEOUT);
1720         if (IS_ERR(skb)) {
1721                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1722                        hdev->name, PTR_ERR(skb));
1723                 return PTR_ERR(skb);
1724         }
1725         kfree_skb(skb);
1726
1727         BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1728                 hdev->name);
1729
1730         btintel_check_bdaddr(hdev);
1731         return 0;
1732 }
1733
1734 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
1735 {
1736         struct sk_buff *skb;
1737         struct hci_event_hdr *hdr;
1738         struct hci_ev_cmd_complete *evt;
1739
1740         skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_ATOMIC);
1741         if (!skb)
1742                 return -ENOMEM;
1743
1744         hdr = (struct hci_event_hdr *)skb_put(skb, sizeof(*hdr));
1745         hdr->evt = HCI_EV_CMD_COMPLETE;
1746         hdr->plen = sizeof(*evt) + 1;
1747
1748         evt = (struct hci_ev_cmd_complete *)skb_put(skb, sizeof(*evt));
1749         evt->ncmd = 0x01;
1750         evt->opcode = cpu_to_le16(opcode);
1751
1752         *skb_put(skb, 1) = 0x00;
1753
1754         bt_cb(skb)->pkt_type = HCI_EVENT_PKT;
1755
1756         return hci_recv_frame(hdev, skb);
1757 }
1758
1759 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
1760                                  int count)
1761 {
1762         /* When the device is in bootloader mode, then it can send
1763          * events via the bulk endpoint. These events are treated the
1764          * same way as the ones received from the interrupt endpoint.
1765          */
1766         if (test_bit(BTUSB_BOOTLOADER, &data->flags))
1767                 return btusb_recv_intr(data, buffer, count);
1768
1769         return btusb_recv_bulk(data, buffer, count);
1770 }
1771
1772 static void btusb_intel_bootup(struct btusb_data *data, const void *ptr,
1773                                unsigned int len)
1774 {
1775         const struct intel_bootup *evt = ptr;
1776
1777         if (len != sizeof(*evt))
1778                 return;
1779
1780         if (test_and_clear_bit(BTUSB_BOOTING, &data->flags)) {
1781                 smp_mb__after_atomic();
1782                 wake_up_bit(&data->flags, BTUSB_BOOTING);
1783         }
1784 }
1785
1786 static void btusb_intel_secure_send_result(struct btusb_data *data,
1787                                            const void *ptr, unsigned int len)
1788 {
1789         const struct intel_secure_send_result *evt = ptr;
1790
1791         if (len != sizeof(*evt))
1792                 return;
1793
1794         if (evt->result)
1795                 set_bit(BTUSB_FIRMWARE_FAILED, &data->flags);
1796
1797         if (test_and_clear_bit(BTUSB_DOWNLOADING, &data->flags) &&
1798             test_bit(BTUSB_FIRMWARE_LOADED, &data->flags)) {
1799                 smp_mb__after_atomic();
1800                 wake_up_bit(&data->flags, BTUSB_DOWNLOADING);
1801         }
1802 }
1803
1804 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
1805 {
1806         struct btusb_data *data = hci_get_drvdata(hdev);
1807
1808         if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1809                 struct hci_event_hdr *hdr = (void *)skb->data;
1810
1811                 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
1812                     hdr->plen > 0) {
1813                         const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
1814                         unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
1815
1816                         switch (skb->data[2]) {
1817                         case 0x02:
1818                                 /* When switching to the operational firmware
1819                                  * the device sends a vendor specific event
1820                                  * indicating that the bootup completed.
1821                                  */
1822                                 btusb_intel_bootup(data, ptr, len);
1823                                 break;
1824                         case 0x06:
1825                                 /* When the firmware loading completes the
1826                                  * device sends out a vendor specific event
1827                                  * indicating the result of the firmware
1828                                  * loading.
1829                                  */
1830                                 btusb_intel_secure_send_result(data, ptr, len);
1831                                 break;
1832                         }
1833                 }
1834         }
1835
1836         return hci_recv_frame(hdev, skb);
1837 }
1838
1839 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
1840 {
1841         struct btusb_data *data = hci_get_drvdata(hdev);
1842         struct urb *urb;
1843
1844         BT_DBG("%s", hdev->name);
1845
1846         if (!test_bit(HCI_RUNNING, &hdev->flags))
1847                 return -EBUSY;
1848
1849         switch (bt_cb(skb)->pkt_type) {
1850         case HCI_COMMAND_PKT:
1851                 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1852                         struct hci_command_hdr *cmd = (void *)skb->data;
1853                         __u16 opcode = le16_to_cpu(cmd->opcode);
1854
1855                         /* When in bootloader mode and the command 0xfc09
1856                          * is received, it needs to be send down the
1857                          * bulk endpoint. So allocate a bulk URB instead.
1858                          */
1859                         if (opcode == 0xfc09)
1860                                 urb = alloc_bulk_urb(hdev, skb);
1861                         else
1862                                 urb = alloc_ctrl_urb(hdev, skb);
1863
1864                         /* When the 0xfc01 command is issued to boot into
1865                          * the operational firmware, it will actually not
1866                          * send a command complete event. To keep the flow
1867                          * control working inject that event here.
1868                          */
1869                         if (opcode == 0xfc01)
1870                                 inject_cmd_complete(hdev, opcode);
1871                 } else {
1872                         urb = alloc_ctrl_urb(hdev, skb);
1873                 }
1874                 if (IS_ERR(urb))
1875                         return PTR_ERR(urb);
1876
1877                 hdev->stat.cmd_tx++;
1878                 return submit_or_queue_tx_urb(hdev, urb);
1879
1880         case HCI_ACLDATA_PKT:
1881                 urb = alloc_bulk_urb(hdev, skb);
1882                 if (IS_ERR(urb))
1883                         return PTR_ERR(urb);
1884
1885                 hdev->stat.acl_tx++;
1886                 return submit_or_queue_tx_urb(hdev, urb);
1887
1888         case HCI_SCODATA_PKT:
1889                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1890                         return -ENODEV;
1891
1892                 urb = alloc_isoc_urb(hdev, skb);
1893                 if (IS_ERR(urb))
1894                         return PTR_ERR(urb);
1895
1896                 hdev->stat.sco_tx++;
1897                 return submit_tx_urb(hdev, urb);
1898         }
1899
1900         return -EILSEQ;
1901 }
1902
1903 static int btusb_setup_intel_new(struct hci_dev *hdev)
1904 {
1905         static const u8 reset_param[] = { 0x00, 0x01, 0x00, 0x01,
1906                                           0x00, 0x08, 0x04, 0x00 };
1907         struct btusb_data *data = hci_get_drvdata(hdev);
1908         struct sk_buff *skb;
1909         struct intel_version *ver;
1910         struct intel_boot_params *params;
1911         const struct firmware *fw;
1912         const u8 *fw_ptr;
1913         u32 frag_len;
1914         char fwname[64];
1915         ktime_t calltime, delta, rettime;
1916         unsigned long long duration;
1917         int err;
1918
1919         BT_DBG("%s", hdev->name);
1920
1921         calltime = ktime_get();
1922
1923         /* Read the Intel version information to determine if the device
1924          * is in bootloader mode or if it already has operational firmware
1925          * loaded.
1926          */
1927         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1928         if (IS_ERR(skb)) {
1929                 BT_ERR("%s: Reading Intel version information failed (%ld)",
1930                        hdev->name, PTR_ERR(skb));
1931                 return PTR_ERR(skb);
1932         }
1933
1934         if (skb->len != sizeof(*ver)) {
1935                 BT_ERR("%s: Intel version event size mismatch", hdev->name);
1936                 kfree_skb(skb);
1937                 return -EILSEQ;
1938         }
1939
1940         ver = (struct intel_version *)skb->data;
1941
1942         /* The hardware platform number has a fixed value of 0x37 and
1943          * for now only accept this single value.
1944          */
1945         if (ver->hw_platform != 0x37) {
1946                 BT_ERR("%s: Unsupported Intel hardware platform (%u)",
1947                        hdev->name, ver->hw_platform);
1948                 kfree_skb(skb);
1949                 return -EINVAL;
1950         }
1951
1952         /* At the moment only the hardware variant iBT 3.0 (LnP/SfP) is
1953          * supported by this firmware loading method. This check has been
1954          * put in place to ensure correct forward compatibility options
1955          * when newer hardware variants come along.
1956          */
1957         if (ver->hw_variant != 0x0b) {
1958                 BT_ERR("%s: Unsupported Intel hardware variant (%u)",
1959                        hdev->name, ver->hw_variant);
1960                 kfree_skb(skb);
1961                 return -EINVAL;
1962         }
1963
1964         btintel_version_info(hdev, ver);
1965
1966         /* The firmware variant determines if the device is in bootloader
1967          * mode or is running operational firmware. The value 0x06 identifies
1968          * the bootloader and the value 0x23 identifies the operational
1969          * firmware.
1970          *
1971          * When the operational firmware is already present, then only
1972          * the check for valid Bluetooth device address is needed. This
1973          * determines if the device will be added as configured or
1974          * unconfigured controller.
1975          *
1976          * It is not possible to use the Secure Boot Parameters in this
1977          * case since that command is only available in bootloader mode.
1978          */
1979         if (ver->fw_variant == 0x23) {
1980                 kfree_skb(skb);
1981                 clear_bit(BTUSB_BOOTLOADER, &data->flags);
1982                 btintel_check_bdaddr(hdev);
1983                 return 0;
1984         }
1985
1986         /* If the device is not in bootloader mode, then the only possible
1987          * choice is to return an error and abort the device initialization.
1988          */
1989         if (ver->fw_variant != 0x06) {
1990                 BT_ERR("%s: Unsupported Intel firmware variant (%u)",
1991                        hdev->name, ver->fw_variant);
1992                 kfree_skb(skb);
1993                 return -ENODEV;
1994         }
1995
1996         kfree_skb(skb);
1997
1998         /* Read the secure boot parameters to identify the operating
1999          * details of the bootloader.
2000          */
2001         skb = __hci_cmd_sync(hdev, 0xfc0d, 0, NULL, HCI_INIT_TIMEOUT);
2002         if (IS_ERR(skb)) {
2003                 BT_ERR("%s: Reading Intel boot parameters failed (%ld)",
2004                        hdev->name, PTR_ERR(skb));
2005                 return PTR_ERR(skb);
2006         }
2007
2008         if (skb->len != sizeof(*params)) {
2009                 BT_ERR("%s: Intel boot parameters size mismatch", hdev->name);
2010                 kfree_skb(skb);
2011                 return -EILSEQ;
2012         }
2013
2014         params = (struct intel_boot_params *)skb->data;
2015
2016         BT_INFO("%s: Device revision is %u", hdev->name,
2017                 le16_to_cpu(params->dev_revid));
2018
2019         BT_INFO("%s: Secure boot is %s", hdev->name,
2020                 params->secure_boot ? "enabled" : "disabled");
2021
2022         BT_INFO("%s: Minimum firmware build %u week %u %u", hdev->name,
2023                 params->min_fw_build_nn, params->min_fw_build_cw,
2024                 2000 + params->min_fw_build_yy);
2025
2026         /* It is required that every single firmware fragment is acknowledged
2027          * with a command complete event. If the boot parameters indicate
2028          * that this bootloader does not send them, then abort the setup.
2029          */
2030         if (params->limited_cce != 0x00) {
2031                 BT_ERR("%s: Unsupported Intel firmware loading method (%u)",
2032                        hdev->name, params->limited_cce);
2033                 kfree_skb(skb);
2034                 return -EINVAL;
2035         }
2036
2037         /* If the OTP has no valid Bluetooth device address, then there will
2038          * also be no valid address for the operational firmware.
2039          */
2040         if (!bacmp(&params->otp_bdaddr, BDADDR_ANY)) {
2041                 BT_INFO("%s: No device address configured", hdev->name);
2042                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2043         }
2044
2045         /* With this Intel bootloader only the hardware variant and device
2046          * revision information are used to select the right firmware.
2047          *
2048          * Currently this bootloader support is limited to hardware variant
2049          * iBT 3.0 (LnP/SfP) which is identified by the value 11 (0x0b).
2050          */
2051         snprintf(fwname, sizeof(fwname), "intel/ibt-11-%u.sfi",
2052                  le16_to_cpu(params->dev_revid));
2053
2054         err = request_firmware(&fw, fwname, &hdev->dev);
2055         if (err < 0) {
2056                 BT_ERR("%s: Failed to load Intel firmware file (%d)",
2057                        hdev->name, err);
2058                 kfree_skb(skb);
2059                 return err;
2060         }
2061
2062         BT_INFO("%s: Found device firmware: %s", hdev->name, fwname);
2063
2064         /* Save the DDC file name for later use to apply once the firmware
2065          * downloading is done.
2066          */
2067         snprintf(fwname, sizeof(fwname), "intel/ibt-11-%u.ddc",
2068                  le16_to_cpu(params->dev_revid));
2069
2070         kfree_skb(skb);
2071
2072         if (fw->size < 644) {
2073                 BT_ERR("%s: Invalid size of firmware file (%zu)",
2074                        hdev->name, fw->size);
2075                 err = -EBADF;
2076                 goto done;
2077         }
2078
2079         set_bit(BTUSB_DOWNLOADING, &data->flags);
2080
2081         /* Start the firmware download transaction with the Init fragment
2082          * represented by the 128 bytes of CSS header.
2083          */
2084         err = btintel_secure_send(hdev, 0x00, 128, fw->data);
2085         if (err < 0) {
2086                 BT_ERR("%s: Failed to send firmware header (%d)",
2087                        hdev->name, err);
2088                 goto done;
2089         }
2090
2091         /* Send the 256 bytes of public key information from the firmware
2092          * as the PKey fragment.
2093          */
2094         err = btintel_secure_send(hdev, 0x03, 256, fw->data + 128);
2095         if (err < 0) {
2096                 BT_ERR("%s: Failed to send firmware public key (%d)",
2097                        hdev->name, err);
2098                 goto done;
2099         }
2100
2101         /* Send the 256 bytes of signature information from the firmware
2102          * as the Sign fragment.
2103          */
2104         err = btintel_secure_send(hdev, 0x02, 256, fw->data + 388);
2105         if (err < 0) {
2106                 BT_ERR("%s: Failed to send firmware signature (%d)",
2107                        hdev->name, err);
2108                 goto done;
2109         }
2110
2111         fw_ptr = fw->data + 644;
2112         frag_len = 0;
2113
2114         while (fw_ptr - fw->data < fw->size) {
2115                 struct hci_command_hdr *cmd = (void *)(fw_ptr + frag_len);
2116
2117                 frag_len += sizeof(*cmd) + cmd->plen;
2118
2119                 /* The parameter length of the secure send command requires
2120                  * a 4 byte alignment. It happens so that the firmware file
2121                  * contains proper Intel_NOP commands to align the fragments
2122                  * as needed.
2123                  *
2124                  * Send set of commands with 4 byte alignment from the
2125                  * firmware data buffer as a single Data fragement.
2126                  */
2127                 if (!(frag_len % 4)) {
2128                         err = btintel_secure_send(hdev, 0x01, frag_len, fw_ptr);
2129                         if (err < 0) {
2130                                 BT_ERR("%s: Failed to send firmware data (%d)",
2131                                        hdev->name, err);
2132                                 goto done;
2133                         }
2134
2135                         fw_ptr += frag_len;
2136                         frag_len = 0;
2137                 }
2138         }
2139
2140         set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2141
2142         BT_INFO("%s: Waiting for firmware download to complete", hdev->name);
2143
2144         /* Before switching the device into operational mode and with that
2145          * booting the loaded firmware, wait for the bootloader notification
2146          * that all fragments have been successfully received.
2147          *
2148          * When the event processing receives the notification, then the
2149          * BTUSB_DOWNLOADING flag will be cleared.
2150          *
2151          * The firmware loading should not take longer than 5 seconds
2152          * and thus just timeout if that happens and fail the setup
2153          * of this device.
2154          */
2155         err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
2156                                   TASK_INTERRUPTIBLE,
2157                                   msecs_to_jiffies(5000));
2158         if (err == 1) {
2159                 BT_ERR("%s: Firmware loading interrupted", hdev->name);
2160                 err = -EINTR;
2161                 goto done;
2162         }
2163
2164         if (err) {
2165                 BT_ERR("%s: Firmware loading timeout", hdev->name);
2166                 err = -ETIMEDOUT;
2167                 goto done;
2168         }
2169
2170         if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) {
2171                 BT_ERR("%s: Firmware loading failed", hdev->name);
2172                 err = -ENOEXEC;
2173                 goto done;
2174         }
2175
2176         rettime = ktime_get();
2177         delta = ktime_sub(rettime, calltime);
2178         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2179
2180         BT_INFO("%s: Firmware loaded in %llu usecs", hdev->name, duration);
2181
2182 done:
2183         release_firmware(fw);
2184
2185         if (err < 0)
2186                 return err;
2187
2188         calltime = ktime_get();
2189
2190         set_bit(BTUSB_BOOTING, &data->flags);
2191
2192         skb = __hci_cmd_sync(hdev, 0xfc01, sizeof(reset_param), reset_param,
2193                              HCI_INIT_TIMEOUT);
2194         if (IS_ERR(skb))
2195                 return PTR_ERR(skb);
2196
2197         kfree_skb(skb);
2198
2199         /* The bootloader will not indicate when the device is ready. This
2200          * is done by the operational firmware sending bootup notification.
2201          *
2202          * Booting into operational firmware should not take longer than
2203          * 1 second. However if that happens, then just fail the setup
2204          * since something went wrong.
2205          */
2206         BT_INFO("%s: Waiting for device to boot", hdev->name);
2207
2208         err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING,
2209                                   TASK_INTERRUPTIBLE,
2210                                   msecs_to_jiffies(1000));
2211
2212         if (err == 1) {
2213                 BT_ERR("%s: Device boot interrupted", hdev->name);
2214                 return -EINTR;
2215         }
2216
2217         if (err) {
2218                 BT_ERR("%s: Device boot timeout", hdev->name);
2219                 return -ETIMEDOUT;
2220         }
2221
2222         rettime = ktime_get();
2223         delta = ktime_sub(rettime, calltime);
2224         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2225
2226         BT_INFO("%s: Device booted in %llu usecs", hdev->name, duration);
2227
2228         clear_bit(BTUSB_BOOTLOADER, &data->flags);
2229
2230         /* Once the device is running in operational mode, it needs to apply
2231          * the device configuration (DDC) parameters.
2232          *
2233          * The device can work without DDC parameters, so even if it fails
2234          * to load the file, no need to fail the setup.
2235          */
2236         btintel_load_ddc_config(hdev, fwname);
2237
2238         return 0;
2239 }
2240
2241 static int btusb_shutdown_intel(struct hci_dev *hdev)
2242 {
2243         struct sk_buff *skb;
2244         long ret;
2245
2246         /* Some platforms have an issue with BT LED when the interface is
2247          * down or BT radio is turned off, which takes 5 seconds to BT LED
2248          * goes off. This command turns off the BT LED immediately.
2249          */
2250         skb = __hci_cmd_sync(hdev, 0xfc3f, 0, NULL, HCI_INIT_TIMEOUT);
2251         if (IS_ERR(skb)) {
2252                 ret = PTR_ERR(skb);
2253                 BT_ERR("%s: turning off Intel device LED failed (%ld)",
2254                        hdev->name, ret);
2255                 return ret;
2256         }
2257         kfree_skb(skb);
2258
2259         return 0;
2260 }
2261
2262 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
2263                                     const bdaddr_t *bdaddr)
2264 {
2265         struct sk_buff *skb;
2266         u8 buf[8];
2267         long ret;
2268
2269         buf[0] = 0xfe;
2270         buf[1] = sizeof(bdaddr_t);
2271         memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
2272
2273         skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2274         if (IS_ERR(skb)) {
2275                 ret = PTR_ERR(skb);
2276                 BT_ERR("%s: changing Marvell device address failed (%ld)",
2277                        hdev->name, ret);
2278                 return ret;
2279         }
2280         kfree_skb(skb);
2281
2282         return 0;
2283 }
2284
2285 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
2286                                     const bdaddr_t *bdaddr)
2287 {
2288         struct sk_buff *skb;
2289         u8 buf[10];
2290         long ret;
2291
2292         buf[0] = 0x01;
2293         buf[1] = 0x01;
2294         buf[2] = 0x00;
2295         buf[3] = sizeof(bdaddr_t);
2296         memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
2297
2298         skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2299         if (IS_ERR(skb)) {
2300                 ret = PTR_ERR(skb);
2301                 BT_ERR("%s: Change address command failed (%ld)",
2302                        hdev->name, ret);
2303                 return ret;
2304         }
2305         kfree_skb(skb);
2306
2307         return 0;
2308 }
2309
2310 #define QCA_DFU_PACKET_LEN      4096
2311
2312 #define QCA_GET_TARGET_VERSION  0x09
2313 #define QCA_CHECK_STATUS        0x05
2314 #define QCA_DFU_DOWNLOAD        0x01
2315
2316 #define QCA_SYSCFG_UPDATED      0x40
2317 #define QCA_PATCH_UPDATED       0x80
2318 #define QCA_DFU_TIMEOUT         3000
2319
2320 struct qca_version {
2321         __le32  rom_version;
2322         __le32  patch_version;
2323         __le32  ram_version;
2324         __le32  ref_clock;
2325         __u8    reserved[4];
2326 } __packed;
2327
2328 struct qca_rampatch_version {
2329         __le16  rom_version;
2330         __le16  patch_version;
2331 } __packed;
2332
2333 struct qca_device_info {
2334         u32     rom_version;
2335         u8      rampatch_hdr;   /* length of header in rampatch */
2336         u8      nvm_hdr;        /* length of header in NVM */
2337         u8      ver_offset;     /* offset of version structure in rampatch */
2338 };
2339
2340 static const struct qca_device_info qca_devices_table[] = {
2341         { 0x00000100, 20, 4, 10 }, /* Rome 1.0 */
2342         { 0x00000101, 20, 4, 10 }, /* Rome 1.1 */
2343         { 0x00000200, 28, 4, 18 }, /* Rome 2.0 */
2344         { 0x00000201, 28, 4, 18 }, /* Rome 2.1 */
2345         { 0x00000300, 28, 4, 18 }, /* Rome 3.0 */
2346         { 0x00000302, 28, 4, 18 }, /* Rome 3.2 */
2347 };
2348
2349 static int btusb_qca_send_vendor_req(struct hci_dev *hdev, u8 request,
2350                                      void *data, u16 size)
2351 {
2352         struct btusb_data *btdata = hci_get_drvdata(hdev);
2353         struct usb_device *udev = btdata->udev;
2354         int pipe, err;
2355         u8 *buf;
2356
2357         buf = kmalloc(size, GFP_KERNEL);
2358         if (!buf)
2359                 return -ENOMEM;
2360
2361         /* Found some of USB hosts have IOT issues with ours so that we should
2362          * not wait until HCI layer is ready.
2363          */
2364         pipe = usb_rcvctrlpipe(udev, 0);
2365         err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
2366                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2367         if (err < 0) {
2368                 BT_ERR("%s: Failed to access otp area (%d)", hdev->name, err);
2369                 goto done;
2370         }
2371
2372         memcpy(data, buf, size);
2373
2374 done:
2375         kfree(buf);
2376
2377         return err;
2378 }
2379
2380 static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
2381                                        const struct firmware *firmware,
2382                                        size_t hdr_size)
2383 {
2384         struct btusb_data *btdata = hci_get_drvdata(hdev);
2385         struct usb_device *udev = btdata->udev;
2386         size_t count, size, sent = 0;
2387         int pipe, len, err;
2388         u8 *buf;
2389
2390         buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
2391         if (!buf)
2392                 return -ENOMEM;
2393
2394         count = firmware->size;
2395
2396         size = min_t(size_t, count, hdr_size);
2397         memcpy(buf, firmware->data, size);
2398
2399         /* USB patches should go down to controller through USB path
2400          * because binary format fits to go down through USB channel.
2401          * USB control path is for patching headers and USB bulk is for
2402          * patch body.
2403          */
2404         pipe = usb_sndctrlpipe(udev, 0);
2405         err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
2406                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2407         if (err < 0) {
2408                 BT_ERR("%s: Failed to send headers (%d)", hdev->name, err);
2409                 goto done;
2410         }
2411
2412         sent += size;
2413         count -= size;
2414
2415         while (count) {
2416                 size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
2417
2418                 memcpy(buf, firmware->data + sent, size);
2419
2420                 pipe = usb_sndbulkpipe(udev, 0x02);
2421                 err = usb_bulk_msg(udev, pipe, buf, size, &len,
2422                                    QCA_DFU_TIMEOUT);
2423                 if (err < 0) {
2424                         BT_ERR("%s: Failed to send body at %zd of %zd (%d)",
2425                                hdev->name, sent, firmware->size, err);
2426                         break;
2427                 }
2428
2429                 if (size != len) {
2430                         BT_ERR("%s: Failed to get bulk buffer", hdev->name);
2431                         err = -EILSEQ;
2432                         break;
2433                 }
2434
2435                 sent  += size;
2436                 count -= size;
2437         }
2438
2439 done:
2440         kfree(buf);
2441         return err;
2442 }
2443
2444 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
2445                                          struct qca_version *ver,
2446                                          const struct qca_device_info *info)
2447 {
2448         struct qca_rampatch_version *rver;
2449         const struct firmware *fw;
2450         u32 ver_rom, ver_patch;
2451         u16 rver_rom, rver_patch;
2452         char fwname[64];
2453         int err;
2454
2455         ver_rom = le32_to_cpu(ver->rom_version);
2456         ver_patch = le32_to_cpu(ver->patch_version);
2457
2458         snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom);
2459
2460         err = request_firmware(&fw, fwname, &hdev->dev);
2461         if (err) {
2462                 BT_ERR("%s: failed to request rampatch file: %s (%d)",
2463                        hdev->name, fwname, err);
2464                 return err;
2465         }
2466
2467         BT_INFO("%s: using rampatch file: %s", hdev->name, fwname);
2468
2469         rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
2470         rver_rom = le16_to_cpu(rver->rom_version);
2471         rver_patch = le16_to_cpu(rver->patch_version);
2472
2473         BT_INFO("%s: QCA: patch rome 0x%x build 0x%x, firmware rome 0x%x "
2474                 "build 0x%x", hdev->name, rver_rom, rver_patch, ver_rom,
2475                 ver_patch);
2476
2477         if (rver_rom != ver_rom || rver_patch <= ver_patch) {
2478                 BT_ERR("%s: rampatch file version did not match with firmware",
2479                        hdev->name);
2480                 err = -EINVAL;
2481                 goto done;
2482         }
2483
2484         err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
2485
2486 done:
2487         release_firmware(fw);
2488
2489         return err;
2490 }
2491
2492 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
2493                                     struct qca_version *ver,
2494                                     const struct qca_device_info *info)
2495 {
2496         const struct firmware *fw;
2497         char fwname[64];
2498         int err;
2499
2500         snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x.bin",
2501                  le32_to_cpu(ver->rom_version));
2502
2503         err = request_firmware(&fw, fwname, &hdev->dev);
2504         if (err) {
2505                 BT_ERR("%s: failed to request NVM file: %s (%d)",
2506                        hdev->name, fwname, err);
2507                 return err;
2508         }
2509
2510         BT_INFO("%s: using NVM file: %s", hdev->name, fwname);
2511
2512         err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
2513
2514         release_firmware(fw);
2515
2516         return err;
2517 }
2518
2519 static int btusb_setup_qca(struct hci_dev *hdev)
2520 {
2521         const struct qca_device_info *info = NULL;
2522         struct qca_version ver;
2523         u32 ver_rom;
2524         u8 status;
2525         int i, err;
2526
2527         err = btusb_qca_send_vendor_req(hdev, QCA_GET_TARGET_VERSION, &ver,
2528                                         sizeof(ver));
2529         if (err < 0)
2530                 return err;
2531
2532         ver_rom = le32_to_cpu(ver.rom_version);
2533         for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
2534                 if (ver_rom == qca_devices_table[i].rom_version)
2535                         info = &qca_devices_table[i];
2536         }
2537         if (!info) {
2538                 BT_ERR("%s: don't support firmware rome 0x%x", hdev->name,
2539                        ver_rom);
2540                 return -ENODEV;
2541         }
2542
2543         err = btusb_qca_send_vendor_req(hdev, QCA_CHECK_STATUS, &status,
2544                                         sizeof(status));
2545         if (err < 0)
2546                 return err;
2547
2548         if (!(status & QCA_PATCH_UPDATED)) {
2549                 err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
2550                 if (err < 0)
2551                         return err;
2552         }
2553
2554         if (!(status & QCA_SYSCFG_UPDATED)) {
2555                 err = btusb_setup_qca_load_nvm(hdev, &ver, info);
2556                 if (err < 0)
2557                         return err;
2558         }
2559
2560         return 0;
2561 }
2562
2563 static int btusb_probe(struct usb_interface *intf,
2564                        const struct usb_device_id *id)
2565 {
2566         struct usb_endpoint_descriptor *ep_desc;
2567         struct btusb_data *data;
2568         struct hci_dev *hdev;
2569         int i, err;
2570
2571         BT_DBG("intf %p id %p", intf, id);
2572
2573         /* interface numbers are hardcoded in the spec */
2574         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
2575                 return -ENODEV;
2576
2577         if (!id->driver_info) {
2578                 const struct usb_device_id *match;
2579
2580                 match = usb_match_id(intf, blacklist_table);
2581                 if (match)
2582                         id = match;
2583         }
2584
2585         if (id->driver_info == BTUSB_IGNORE)
2586                 return -ENODEV;
2587
2588         if (id->driver_info & BTUSB_ATH3012) {
2589                 struct usb_device *udev = interface_to_usbdev(intf);
2590
2591                 /* Old firmware would otherwise let ath3k driver load
2592                  * patch and sysconfig files */
2593                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
2594                         return -ENODEV;
2595         }
2596
2597         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
2598         if (!data)
2599                 return -ENOMEM;
2600
2601         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2602                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2603
2604                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
2605                         data->intr_ep = ep_desc;
2606                         continue;
2607                 }
2608
2609                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
2610                         data->bulk_tx_ep = ep_desc;
2611                         continue;
2612                 }
2613
2614                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
2615                         data->bulk_rx_ep = ep_desc;
2616                         continue;
2617                 }
2618         }
2619
2620         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
2621                 return -ENODEV;
2622
2623         if (id->driver_info & BTUSB_AMP) {
2624                 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
2625                 data->cmdreq = 0x2b;
2626         } else {
2627                 data->cmdreq_type = USB_TYPE_CLASS;
2628                 data->cmdreq = 0x00;
2629         }
2630
2631         data->udev = interface_to_usbdev(intf);
2632         data->intf = intf;
2633
2634         INIT_WORK(&data->work, btusb_work);
2635         INIT_WORK(&data->waker, btusb_waker);
2636         init_usb_anchor(&data->deferred);
2637         init_usb_anchor(&data->tx_anchor);
2638         spin_lock_init(&data->txlock);
2639
2640         init_usb_anchor(&data->intr_anchor);
2641         init_usb_anchor(&data->bulk_anchor);
2642         init_usb_anchor(&data->isoc_anchor);
2643         spin_lock_init(&data->rxlock);
2644
2645         if (id->driver_info & BTUSB_INTEL_NEW) {
2646                 data->recv_event = btusb_recv_event_intel;
2647                 data->recv_bulk = btusb_recv_bulk_intel;
2648                 set_bit(BTUSB_BOOTLOADER, &data->flags);
2649         } else {
2650                 data->recv_event = hci_recv_frame;
2651                 data->recv_bulk = btusb_recv_bulk;
2652         }
2653
2654         hdev = hci_alloc_dev();
2655         if (!hdev)
2656                 return -ENOMEM;
2657
2658         hdev->bus = HCI_USB;
2659         hci_set_drvdata(hdev, data);
2660
2661         if (id->driver_info & BTUSB_AMP)
2662                 hdev->dev_type = HCI_AMP;
2663         else
2664                 hdev->dev_type = HCI_BREDR;
2665
2666         data->hdev = hdev;
2667
2668         SET_HCIDEV_DEV(hdev, &intf->dev);
2669
2670         hdev->open   = btusb_open;
2671         hdev->close  = btusb_close;
2672         hdev->flush  = btusb_flush;
2673         hdev->send   = btusb_send_frame;
2674         hdev->notify = btusb_notify;
2675
2676         if (id->driver_info & BTUSB_BCM92035)
2677                 hdev->setup = btusb_setup_bcm92035;
2678
2679 #ifdef CONFIG_BT_HCIBTUSB_BCM
2680         if (id->driver_info & BTUSB_BCM_PATCHRAM) {
2681                 hdev->setup = btbcm_setup_patchram;
2682                 hdev->set_bdaddr = btbcm_set_bdaddr;
2683         }
2684
2685         if (id->driver_info & BTUSB_BCM_APPLE)
2686                 hdev->setup = btbcm_setup_apple;
2687 #endif
2688
2689         if (id->driver_info & BTUSB_INTEL) {
2690                 hdev->setup = btusb_setup_intel;
2691                 hdev->shutdown = btusb_shutdown_intel;
2692                 hdev->set_bdaddr = btintel_set_bdaddr;
2693                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2694                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
2695         }
2696
2697         if (id->driver_info & BTUSB_INTEL_NEW) {
2698                 hdev->send = btusb_send_frame_intel;
2699                 hdev->setup = btusb_setup_intel_new;
2700                 hdev->hw_error = btintel_hw_error;
2701                 hdev->set_bdaddr = btintel_set_bdaddr;
2702                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2703         }
2704
2705         if (id->driver_info & BTUSB_MARVELL)
2706                 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
2707
2708         if (id->driver_info & BTUSB_SWAVE) {
2709                 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
2710                 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
2711         }
2712
2713         if (id->driver_info & BTUSB_INTEL_BOOT)
2714                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
2715
2716         if (id->driver_info & BTUSB_ATH3012) {
2717                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
2718                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
2719                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2720         }
2721
2722         if (id->driver_info & BTUSB_QCA_ROME) {
2723                 data->setup_on_usb = btusb_setup_qca;
2724                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
2725         }
2726
2727 #ifdef CONFIG_BT_HCIBTUSB_RTL
2728         if (id->driver_info & BTUSB_REALTEK) {
2729                 hdev->setup = btrtl_setup_realtek;
2730
2731                 /* Realtek devices lose their updated firmware over suspend,
2732                  * but the USB hub doesn't notice any status change.
2733                  * Explicitly request a device reset on resume.
2734                  */
2735                 set_bit(BTUSB_RESET_RESUME, &data->flags);
2736         }
2737 #endif
2738
2739         if (id->driver_info & BTUSB_AMP) {
2740                 /* AMP controllers do not support SCO packets */
2741                 data->isoc = NULL;
2742         } else {
2743                 /* Interface numbers are hardcoded in the specification */
2744                 data->isoc = usb_ifnum_to_if(data->udev, 1);
2745         }
2746
2747         if (!reset)
2748                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2749
2750         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
2751                 if (!disable_scofix)
2752                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
2753         }
2754
2755         if (id->driver_info & BTUSB_BROKEN_ISOC)
2756                 data->isoc = NULL;
2757
2758         if (id->driver_info & BTUSB_DIGIANSWER) {
2759                 data->cmdreq_type = USB_TYPE_VENDOR;
2760                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2761         }
2762
2763         if (id->driver_info & BTUSB_CSR) {
2764                 struct usb_device *udev = data->udev;
2765                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
2766
2767                 /* Old firmware would otherwise execute USB reset */
2768                 if (bcdDevice < 0x117)
2769                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2770
2771                 /* Fake CSR devices with broken commands */
2772                 if (bcdDevice <= 0x100 || bcdDevice == 0x134)
2773                         hdev->setup = btusb_setup_csr;
2774
2775                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
2776         }
2777
2778         if (id->driver_info & BTUSB_SNIFFER) {
2779                 struct usb_device *udev = data->udev;
2780
2781                 /* New sniffer firmware has crippled HCI interface */
2782                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
2783                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
2784         }
2785
2786         if (id->driver_info & BTUSB_INTEL_BOOT) {
2787                 /* A bug in the bootloader causes that interrupt interface is
2788                  * only enabled after receiving SetInterface(0, AltSetting=0).
2789                  */
2790                 err = usb_set_interface(data->udev, 0, 0);
2791                 if (err < 0) {
2792                         BT_ERR("failed to set interface 0, alt 0 %d", err);
2793                         hci_free_dev(hdev);
2794                         return err;
2795                 }
2796         }
2797
2798         if (data->isoc) {
2799                 err = usb_driver_claim_interface(&btusb_driver,
2800                                                  data->isoc, data);
2801                 if (err < 0) {
2802                         hci_free_dev(hdev);
2803                         return err;
2804                 }
2805         }
2806
2807         err = hci_register_dev(hdev);
2808         if (err < 0) {
2809                 hci_free_dev(hdev);
2810                 return err;
2811         }
2812
2813         usb_set_intfdata(intf, data);
2814
2815         return 0;
2816 }
2817
2818 static void btusb_disconnect(struct usb_interface *intf)
2819 {
2820         struct btusb_data *data = usb_get_intfdata(intf);
2821         struct hci_dev *hdev;
2822
2823         BT_DBG("intf %p", intf);
2824
2825         if (!data)
2826                 return;
2827
2828         hdev = data->hdev;
2829         usb_set_intfdata(data->intf, NULL);
2830
2831         if (data->isoc)
2832                 usb_set_intfdata(data->isoc, NULL);
2833
2834         hci_unregister_dev(hdev);
2835
2836         if (intf == data->isoc)
2837                 usb_driver_release_interface(&btusb_driver, data->intf);
2838         else if (data->isoc)
2839                 usb_driver_release_interface(&btusb_driver, data->isoc);
2840
2841         hci_free_dev(hdev);
2842 }
2843
2844 #ifdef CONFIG_PM
2845 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
2846 {
2847         struct btusb_data *data = usb_get_intfdata(intf);
2848
2849         BT_DBG("intf %p", intf);
2850
2851         if (data->suspend_count++)
2852                 return 0;
2853
2854         spin_lock_irq(&data->txlock);
2855         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
2856                 set_bit(BTUSB_SUSPENDING, &data->flags);
2857                 spin_unlock_irq(&data->txlock);
2858         } else {
2859                 spin_unlock_irq(&data->txlock);
2860                 data->suspend_count--;
2861                 return -EBUSY;
2862         }
2863
2864         cancel_work_sync(&data->work);
2865
2866         btusb_stop_traffic(data);
2867         usb_kill_anchored_urbs(&data->tx_anchor);
2868
2869         /* Optionally request a device reset on resume, but only when
2870          * wakeups are disabled. If wakeups are enabled we assume the
2871          * device will stay powered up throughout suspend.
2872          */
2873         if (test_bit(BTUSB_RESET_RESUME, &data->flags) &&
2874             !device_may_wakeup(&data->udev->dev))
2875                 data->udev->reset_resume = 1;
2876
2877         return 0;
2878 }
2879
2880 static void play_deferred(struct btusb_data *data)
2881 {
2882         struct urb *urb;
2883         int err;
2884
2885         while ((urb = usb_get_from_anchor(&data->deferred))) {
2886                 err = usb_submit_urb(urb, GFP_ATOMIC);
2887                 if (err < 0)
2888                         break;
2889
2890                 data->tx_in_flight++;
2891         }
2892         usb_scuttle_anchored_urbs(&data->deferred);
2893 }
2894
2895 static int btusb_resume(struct usb_interface *intf)
2896 {
2897         struct btusb_data *data = usb_get_intfdata(intf);
2898         struct hci_dev *hdev = data->hdev;
2899         int err = 0;
2900
2901         BT_DBG("intf %p", intf);
2902
2903         if (--data->suspend_count)
2904                 return 0;
2905
2906         if (!test_bit(HCI_RUNNING, &hdev->flags))
2907                 goto done;
2908
2909         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
2910                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
2911                 if (err < 0) {
2912                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
2913                         goto failed;
2914                 }
2915         }
2916
2917         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
2918                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
2919                 if (err < 0) {
2920                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
2921                         goto failed;
2922                 }
2923
2924                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
2925         }
2926
2927         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
2928                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
2929                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
2930                 else
2931                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
2932         }
2933
2934         spin_lock_irq(&data->txlock);
2935         play_deferred(data);
2936         clear_bit(BTUSB_SUSPENDING, &data->flags);
2937         spin_unlock_irq(&data->txlock);
2938         schedule_work(&data->work);
2939
2940         return 0;
2941
2942 failed:
2943         usb_scuttle_anchored_urbs(&data->deferred);
2944 done:
2945         spin_lock_irq(&data->txlock);
2946         clear_bit(BTUSB_SUSPENDING, &data->flags);
2947         spin_unlock_irq(&data->txlock);
2948
2949         return err;
2950 }
2951 #endif
2952
2953 static struct usb_driver btusb_driver = {
2954         .name           = "btusb",
2955         .probe          = btusb_probe,
2956         .disconnect     = btusb_disconnect,
2957 #ifdef CONFIG_PM
2958         .suspend        = btusb_suspend,
2959         .resume         = btusb_resume,
2960 #endif
2961         .id_table       = btusb_table,
2962         .supports_autosuspend = 1,
2963         .disable_hub_initiated_lpm = 1,
2964 };
2965
2966 module_usb_driver(btusb_driver);
2967
2968 module_param(disable_scofix, bool, 0644);
2969 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
2970
2971 module_param(force_scofix, bool, 0644);
2972 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
2973
2974 module_param(reset, bool, 0644);
2975 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
2976
2977 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
2978 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
2979 MODULE_VERSION(VERSION);
2980 MODULE_LICENSE("GPL");