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(BTUSB_INTR_RUNNING, &data->flags))
 944                 goto done;
 945
 946         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 947         if (err < 0)
 948                 goto failed;
 949
 950         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 951         if (err < 0) {
 952                 usb_kill_anchored_urbs(&data->intr_anchor);
 953                 goto failed;
 954         }
 955
 956         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 957         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 958
 959 done:
 960         usb_autopm_put_interface(data->intf);
 961         return 0;
 962
 963 failed:
 964         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 965         usb_autopm_put_interface(data->intf);
 966         return err;
 967 }
 968
 969 static void btusb_stop_traffic(struct btusb_data *data)
 970 {
 971         usb_kill_anchored_urbs(&data->intr_anchor);
 972         usb_kill_anchored_urbs(&data->bulk_anchor);
 973         usb_kill_anchored_urbs(&data->isoc_anchor);
 974 }
 975
 976 static int btusb_close(struct hci_dev *hdev)
 977 {
 978         struct btusb_data *data = hci_get_drvdata(hdev);
 979         int err;
 980
 981         BT_DBG("%s", hdev->name);
 982
 983         cancel_work_sync(&data->work);
 984         cancel_work_sync(&data->waker);
 985
 986         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 987         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 988         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 989
 990         btusb_stop_traffic(data);
 991         btusb_free_frags(data);
 992
 993         err = usb_autopm_get_interface(data->intf);
 994         if (err < 0)
 995                 goto failed;
 996
 997         data->intf->needs_remote_wakeup = 0;
 998         usb_autopm_put_interface(data->intf);
 999
1000 failed:
1001         usb_scuttle_anchored_urbs(&data->deferred);
1002         return 0;
1003 }
1004
1005 static int btusb_flush(struct hci_dev *hdev)
1006 {
1007         struct btusb_data *data = hci_get_drvdata(hdev);
1008
1009         BT_DBG("%s", hdev->name);
1010
1011         usb_kill_anchored_urbs(&data->tx_anchor);
1012         btusb_free_frags(data);
1013
1014         return 0;
1015 }
1016
1017 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
1018 {
1019         struct btusb_data *data = hci_get_drvdata(hdev);
1020         struct usb_ctrlrequest *dr;
1021         struct urb *urb;
1022         unsigned int pipe;
1023
1024         urb = usb_alloc_urb(0, GFP_KERNEL);
1025         if (!urb)
1026                 return ERR_PTR(-ENOMEM);
1027
1028         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
1029         if (!dr) {
1030                 usb_free_urb(urb);
1031                 return ERR_PTR(-ENOMEM);
1032         }
1033
1034         dr->bRequestType = data->cmdreq_type;
1035         dr->bRequest     = data->cmdreq;
1036         dr->wIndex       = 0;
1037         dr->wValue       = 0;
1038         dr->wLength      = __cpu_to_le16(skb->len);
1039
1040         pipe = usb_sndctrlpipe(data->udev, 0x00);
1041
1042         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
1043                              skb->data, skb->len, btusb_tx_complete, skb);
1044
1045         skb->dev = (void *)hdev;
1046
1047         return urb;
1048 }
1049
1050 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
1051 {
1052         struct btusb_data *data = hci_get_drvdata(hdev);
1053         struct urb *urb;
1054         unsigned int pipe;
1055
1056         if (!data->bulk_tx_ep)
1057                 return ERR_PTR(-ENODEV);
1058
1059         urb = usb_alloc_urb(0, GFP_KERNEL);
1060         if (!urb)
1061                 return ERR_PTR(-ENOMEM);
1062
1063         pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1064
1065         usb_fill_bulk_urb(urb, data->udev, pipe,
1066                           skb->data, skb->len, btusb_tx_complete, skb);
1067
1068         skb->dev = (void *)hdev;
1069
1070         return urb;
1071 }
1072
1073 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1074 {
1075         struct btusb_data *data = hci_get_drvdata(hdev);
1076         struct urb *urb;
1077         unsigned int pipe;
1078
1079         if (!data->isoc_tx_ep)
1080                 return ERR_PTR(-ENODEV);
1081
1082         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1083         if (!urb)
1084                 return ERR_PTR(-ENOMEM);
1085
1086         pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1087
1088         usb_fill_int_urb(urb, data->udev, pipe,
1089                          skb->data, skb->len, btusb_isoc_tx_complete,
1090                          skb, data->isoc_tx_ep->bInterval);
1091
1092         urb->transfer_flags  = URB_ISO_ASAP;
1093
1094         __fill_isoc_descriptor(urb, skb->len,
1095                                le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1096
1097         skb->dev = (void *)hdev;
1098
1099         return urb;
1100 }
1101
1102 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1103 {
1104         struct btusb_data *data = hci_get_drvdata(hdev);
1105         int err;
1106
1107         usb_anchor_urb(urb, &data->tx_anchor);
1108
1109         err = usb_submit_urb(urb, GFP_KERNEL);
1110         if (err < 0) {
1111                 if (err != -EPERM && err != -ENODEV)
1112                         BT_ERR("%s urb %p submission failed (%d)",
1113                                hdev->name, urb, -err);
1114                 kfree(urb->setup_packet);
1115                 usb_unanchor_urb(urb);
1116         } else {
1117                 usb_mark_last_busy(data->udev);
1118         }
1119
1120         usb_free_urb(urb);
1121         return err;
1122 }
1123
1124 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1125 {
1126         struct btusb_data *data = hci_get_drvdata(hdev);
1127         unsigned long flags;
1128         bool suspending;
1129
1130         spin_lock_irqsave(&data->txlock, flags);
1131         suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1132         if (!suspending)
1133                 data->tx_in_flight++;
1134         spin_unlock_irqrestore(&data->txlock, flags);
1135
1136         if (!suspending)
1137                 return submit_tx_urb(hdev, urb);
1138
1139         usb_anchor_urb(urb, &data->deferred);
1140         schedule_work(&data->waker);
1141
1142         usb_free_urb(urb);
1143         return 0;
1144 }
1145
1146 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1147 {
1148         struct urb *urb;
1149
1150         BT_DBG("%s", hdev->name);
1151
1152         switch (bt_cb(skb)->pkt_type) {
1153         case HCI_COMMAND_PKT:
1154                 urb = alloc_ctrl_urb(hdev, skb);
1155                 if (IS_ERR(urb))
1156                         return PTR_ERR(urb);
1157
1158                 hdev->stat.cmd_tx++;
1159                 return submit_or_queue_tx_urb(hdev, urb);
1160
1161         case HCI_ACLDATA_PKT:
1162                 urb = alloc_bulk_urb(hdev, skb);
1163                 if (IS_ERR(urb))
1164                         return PTR_ERR(urb);
1165
1166                 hdev->stat.acl_tx++;
1167                 return submit_or_queue_tx_urb(hdev, urb);
1168
1169         case HCI_SCODATA_PKT:
1170                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1171                         return -ENODEV;
1172
1173                 urb = alloc_isoc_urb(hdev, skb);
1174                 if (IS_ERR(urb))
1175                         return PTR_ERR(urb);
1176
1177                 hdev->stat.sco_tx++;
1178                 return submit_tx_urb(hdev, urb);
1179         }
1180
1181         return -EILSEQ;
1182 }
1183
1184 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1185 {
1186         struct btusb_data *data = hci_get_drvdata(hdev);
1187
1188         BT_DBG("%s evt %d", hdev->name, evt);
1189
1190         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1191                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1192                 schedule_work(&data->work);
1193         }
1194 }
1195
1196 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1197 {
1198         struct btusb_data *data = hci_get_drvdata(hdev);
1199         struct usb_interface *intf = data->isoc;
1200         struct usb_endpoint_descriptor *ep_desc;
1201         int i, err;
1202
1203         if (!data->isoc)
1204                 return -ENODEV;
1205
1206         err = usb_set_interface(data->udev, 1, altsetting);
1207         if (err < 0) {
1208                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
1209                 return err;
1210         }
1211
1212         data->isoc_altsetting = altsetting;
1213
1214         data->isoc_tx_ep = NULL;
1215         data->isoc_rx_ep = NULL;
1216
1217         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1218                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1219
1220                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1221                         data->isoc_tx_ep = ep_desc;
1222                         continue;
1223                 }
1224
1225                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1226                         data->isoc_rx_ep = ep_desc;
1227                         continue;
1228                 }
1229         }
1230
1231         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1232                 BT_ERR("%s invalid SCO descriptors", hdev->name);
1233                 return -ENODEV;
1234         }
1235
1236         return 0;
1237 }
1238
1239 static void btusb_work(struct work_struct *work)
1240 {
1241         struct btusb_data *data = container_of(work, struct btusb_data, work);
1242         struct hci_dev *hdev = data->hdev;
1243         int new_alts;
1244         int err;
1245
1246         if (data->sco_num > 0) {
1247                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1248                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1249                         if (err < 0) {
1250                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1251                                 usb_kill_anchored_urbs(&data->isoc_anchor);
1252                                 return;
1253                         }
1254
1255                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1256                 }
1257
1258                 if (hdev->voice_setting & 0x0020) {
1259                         static const int alts[3] = { 2, 4, 5 };
1260
1261                         new_alts = alts[data->sco_num - 1];
1262                 } else {
1263                         new_alts = data->sco_num;
1264                 }
1265
1266                 if (data->isoc_altsetting != new_alts) {
1267                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1268                         usb_kill_anchored_urbs(&data->isoc_anchor);
1269
1270                         /* When isochronous alternate setting needs to be
1271                          * changed, because SCO connection has been added
1272                          * or removed, a packet fragment may be left in the
1273                          * reassembling state. This could lead to wrongly
1274                          * assembled fragments.
1275                          *
1276                          * Clear outstanding fragment when selecting a new
1277                          * alternate setting.
1278                          */
1279                         spin_lock(&data->rxlock);
1280                         kfree_skb(data->sco_skb);
1281                         data->sco_skb = NULL;
1282                         spin_unlock(&data->rxlock);
1283
1284                         if (__set_isoc_interface(hdev, new_alts) < 0)
1285                                 return;
1286                 }
1287
1288                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1289                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1290                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1291                         else
1292                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1293                 }
1294         } else {
1295                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1296                 usb_kill_anchored_urbs(&data->isoc_anchor);
1297
1298                 __set_isoc_interface(hdev, 0);
1299                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1300                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1301         }
1302 }
1303
1304 static void btusb_waker(struct work_struct *work)
1305 {
1306         struct btusb_data *data = container_of(work, struct btusb_data, waker);
1307         int err;
1308
1309         err = usb_autopm_get_interface(data->intf);
1310         if (err < 0)
1311                 return;
1312
1313         usb_autopm_put_interface(data->intf);
1314 }
1315
1316 static int btusb_setup_bcm92035(struct hci_dev *hdev)
1317 {
1318         struct sk_buff *skb;
1319         u8 val = 0x00;
1320
1321         BT_DBG("%s", hdev->name);
1322
1323         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1324         if (IS_ERR(skb))
1325                 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
1326         else
1327                 kfree_skb(skb);
1328
1329         return 0;
1330 }
1331
1332 static int btusb_setup_csr(struct hci_dev *hdev)
1333 {
1334         struct hci_rp_read_local_version *rp;
1335         struct sk_buff *skb;
1336
1337         BT_DBG("%s", hdev->name);
1338
1339         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1340                              HCI_INIT_TIMEOUT);
1341         if (IS_ERR(skb)) {
1342                 int err = PTR_ERR(skb);
1343                 BT_ERR("%s: CSR: Local version failed (%d)", hdev->name, err);
1344                 return err;
1345         }
1346
1347         if (skb->len != sizeof(struct hci_rp_read_local_version)) {
1348                 BT_ERR("%s: CSR: Local version length mismatch", hdev->name);
1349                 kfree_skb(skb);
1350                 return -EIO;
1351         }
1352
1353         rp = (struct hci_rp_read_local_version *)skb->data;
1354
1355         /* Detect controllers which aren't real CSR ones. */
1356         if (le16_to_cpu(rp->manufacturer) != 10 ||
1357             le16_to_cpu(rp->lmp_subver) == 0x0c5c) {
1358                 /* Clear the reset quirk since this is not an actual
1359                  * early Bluetooth 1.1 device from CSR.
1360                  */
1361                 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1362
1363                 /* These fake CSR controllers have all a broken
1364                  * stored link key handling and so just disable it.
1365                  */
1366                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
1367         }
1368
1369         kfree_skb(skb);
1370
1371         return 0;
1372 }
1373
1374 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1375                                                        struct intel_version *ver)
1376 {
1377         const struct firmware *fw;
1378         char fwname[64];
1379         int ret;
1380
1381         snprintf(fwname, sizeof(fwname),
1382                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1383                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
1384                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1385                  ver->fw_build_ww, ver->fw_build_yy);
1386
1387         ret = request_firmware(&fw, fwname, &hdev->dev);
1388         if (ret < 0) {
1389                 if (ret == -EINVAL) {
1390                         BT_ERR("%s Intel firmware file request failed (%d)",
1391                                hdev->name, ret);
1392                         return NULL;
1393                 }
1394
1395                 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1396                        hdev->name, fwname, ret);
1397
1398                 /* If the correct firmware patch file is not found, use the
1399                  * default firmware patch file instead
1400                  */
1401                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1402                          ver->hw_platform, ver->hw_variant);
1403                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1404                         BT_ERR("%s failed to open default Intel fw file: %s",
1405                                hdev->name, fwname);
1406                         return NULL;
1407                 }
1408         }
1409
1410         BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1411
1412         return fw;
1413 }
1414
1415 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1416                                       const struct firmware *fw,
1417                                       const u8 **fw_ptr, int *disable_patch)
1418 {
1419         struct sk_buff *skb;
1420         struct hci_command_hdr *cmd;
1421         const u8 *cmd_param;
1422         struct hci_event_hdr *evt = NULL;
1423         const u8 *evt_param = NULL;
1424         int remain = fw->size - (*fw_ptr - fw->data);
1425
1426         /* The first byte indicates the types of the patch command or event.
1427          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1428          * in the current firmware buffer doesn't start with 0x01 or
1429          * the size of remain buffer is smaller than HCI command header,
1430          * the firmware file is corrupted and it should stop the patching
1431          * process.
1432          */
1433         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1434                 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1435                 return -EINVAL;
1436         }
1437         (*fw_ptr)++;
1438         remain--;
1439
1440         cmd = (struct hci_command_hdr *)(*fw_ptr);
1441         *fw_ptr += sizeof(*cmd);
1442         remain -= sizeof(*cmd);
1443
1444         /* Ensure that the remain firmware data is long enough than the length
1445          * of command parameter. If not, the firmware file is corrupted.
1446          */
1447         if (remain < cmd->plen) {
1448                 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1449                 return -EFAULT;
1450         }
1451
1452         /* If there is a command that loads a patch in the firmware
1453          * file, then enable the patch upon success, otherwise just
1454          * disable the manufacturer mode, for example patch activation
1455          * is not required when the default firmware patch file is used
1456          * because there are no patch data to load.
1457          */
1458         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1459                 *disable_patch = 0;
1460
1461         cmd_param = *fw_ptr;
1462         *fw_ptr += cmd->plen;
1463         remain -= cmd->plen;
1464
1465         /* This reads the expected events when the above command is sent to the
1466          * device. Some vendor commands expects more than one events, for
1467          * example command status event followed by vendor specific event.
1468          * For this case, it only keeps the last expected event. so the command
1469          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1470          * last expected event.
1471          */
1472         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1473                 (*fw_ptr)++;
1474                 remain--;
1475
1476                 evt = (struct hci_event_hdr *)(*fw_ptr);
1477                 *fw_ptr += sizeof(*evt);
1478                 remain -= sizeof(*evt);
1479
1480                 if (remain < evt->plen) {
1481                         BT_ERR("%s Intel fw corrupted: invalid evt len",
1482                                hdev->name);
1483                         return -EFAULT;
1484                 }
1485
1486                 evt_param = *fw_ptr;
1487                 *fw_ptr += evt->plen;
1488                 remain -= evt->plen;
1489         }
1490
1491         /* Every HCI commands in the firmware file has its correspond event.
1492          * If event is not found or remain is smaller than zero, the firmware
1493          * file is corrupted.
1494          */
1495         if (!evt || !evt_param || remain < 0) {
1496                 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1497                 return -EFAULT;
1498         }
1499
1500         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1501                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1502         if (IS_ERR(skb)) {
1503                 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1504                        hdev->name, cmd->opcode, PTR_ERR(skb));
1505                 return PTR_ERR(skb);
1506         }
1507
1508         /* It ensures that the returned event matches the event data read from
1509          * the firmware file. At fist, it checks the length and then
1510          * the contents of the event.
1511          */
1512         if (skb->len != evt->plen) {
1513                 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1514                        le16_to_cpu(cmd->opcode));
1515                 kfree_skb(skb);
1516                 return -EFAULT;
1517         }
1518
1519         if (memcmp(skb->data, evt_param, evt->plen)) {
1520                 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1521                        hdev->name, le16_to_cpu(cmd->opcode));
1522                 kfree_skb(skb);
1523                 return -EFAULT;
1524         }
1525         kfree_skb(skb);
1526
1527         return 0;
1528 }
1529
1530 static int btusb_setup_intel(struct hci_dev *hdev)
1531 {
1532         struct sk_buff *skb;
1533         const struct firmware *fw;
1534         const u8 *fw_ptr;
1535         int disable_patch;
1536         struct intel_version *ver;
1537
1538         const u8 mfg_enable[] = { 0x01, 0x00 };
1539         const u8 mfg_disable[] = { 0x00, 0x00 };
1540         const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
1541         const u8 mfg_reset_activate[] = { 0x00, 0x02 };
1542
1543         BT_DBG("%s", hdev->name);
1544
1545         /* The controller has a bug with the first HCI command sent to it
1546          * returning number of completed commands as zero. This would stall the
1547          * command processing in the Bluetooth core.
1548          *
1549          * As a workaround, send HCI Reset command first which will reset the
1550          * number of completed commands and allow normal command processing
1551          * from now on.
1552          */
1553         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1554         if (IS_ERR(skb)) {
1555                 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1556                        hdev->name, PTR_ERR(skb));
1557                 return PTR_ERR(skb);
1558         }
1559         kfree_skb(skb);
1560
1561         /* Read Intel specific controller version first to allow selection of
1562          * which firmware file to load.
1563          *
1564          * The returned information are hardware variant and revision plus
1565          * firmware variant, revision and build number.
1566          */
1567         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1568         if (IS_ERR(skb)) {
1569                 BT_ERR("%s reading Intel fw version command failed (%ld)",
1570                        hdev->name, PTR_ERR(skb));
1571                 return PTR_ERR(skb);
1572         }
1573
1574         if (skb->len != sizeof(*ver)) {
1575                 BT_ERR("%s Intel version event length mismatch", hdev->name);
1576                 kfree_skb(skb);
1577                 return -EIO;
1578         }
1579
1580         ver = (struct intel_version *)skb->data;
1581
1582         BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1583                 hdev->name, ver->hw_platform, ver->hw_variant,
1584                 ver->hw_revision, ver->fw_variant,  ver->fw_revision,
1585                 ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
1586                 ver->fw_patch_num);
1587
1588         /* fw_patch_num indicates the version of patch the device currently
1589          * have. If there is no patch data in the device, it is always 0x00.
1590          * So, if it is other than 0x00, no need to patch the device again.
1591          */
1592         if (ver->fw_patch_num) {
1593                 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1594                         hdev->name, ver->fw_patch_num);
1595                 kfree_skb(skb);
1596                 btintel_check_bdaddr(hdev);
1597                 return 0;
1598         }
1599
1600         /* Opens the firmware patch file based on the firmware version read
1601          * from the controller. If it fails to open the matching firmware
1602          * patch file, it tries to open the default firmware patch file.
1603          * If no patch file is found, allow the device to operate without
1604          * a patch.
1605          */
1606         fw = btusb_setup_intel_get_fw(hdev, ver);
1607         if (!fw) {
1608                 kfree_skb(skb);
1609                 btintel_check_bdaddr(hdev);
1610                 return 0;
1611         }
1612         fw_ptr = fw->data;
1613
1614         kfree_skb(skb);
1615
1616         /* This Intel specific command enables the manufacturer mode of the
1617          * controller.
1618          *
1619          * Only while this mode is enabled, the driver can download the
1620          * firmware patch data and configuration parameters.
1621          */
1622         skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
1623         if (IS_ERR(skb)) {
1624                 BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
1625                        hdev->name, PTR_ERR(skb));
1626                 release_firmware(fw);
1627                 return PTR_ERR(skb);
1628         }
1629
1630         kfree_skb(skb);
1631
1632         disable_patch = 1;
1633
1634         /* The firmware data file consists of list of Intel specific HCI
1635          * commands and its expected events. The first byte indicates the
1636          * type of the message, either HCI command or HCI event.
1637          *
1638          * It reads the command and its expected event from the firmware file,
1639          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1640          * the returned event is compared with the event read from the firmware
1641          * file and it will continue until all the messages are downloaded to
1642          * the controller.
1643          *
1644          * Once the firmware patching is completed successfully,
1645          * the manufacturer mode is disabled with reset and activating the
1646          * downloaded patch.
1647          *
1648          * If the firmware patching fails, the manufacturer mode is
1649          * disabled with reset and deactivating the patch.
1650          *
1651          * If the default patch file is used, no reset is done when disabling
1652          * the manufacturer.
1653          */
1654         while (fw->size > fw_ptr - fw->data) {
1655                 int ret;
1656
1657                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1658                                                  &disable_patch);
1659                 if (ret < 0)
1660                         goto exit_mfg_deactivate;
1661         }
1662
1663         release_firmware(fw);
1664
1665         if (disable_patch)
1666                 goto exit_mfg_disable;
1667
1668         /* Patching completed successfully and disable the manufacturer mode
1669          * with reset and activate the downloaded firmware patches.
1670          */
1671         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
1672                              mfg_reset_activate, HCI_INIT_TIMEOUT);
1673         if (IS_ERR(skb)) {
1674                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1675                        hdev->name, PTR_ERR(skb));
1676                 return PTR_ERR(skb);
1677         }
1678         kfree_skb(skb);
1679
1680         BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1681                 hdev->name);
1682
1683         btintel_check_bdaddr(hdev);
1684         return 0;
1685
1686 exit_mfg_disable:
1687         /* Disable the manufacturer mode without reset */
1688         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
1689                              HCI_INIT_TIMEOUT);
1690         if (IS_ERR(skb)) {
1691                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1692                        hdev->name, PTR_ERR(skb));
1693                 return PTR_ERR(skb);
1694         }
1695         kfree_skb(skb);
1696
1697         BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1698
1699         btintel_check_bdaddr(hdev);
1700         return 0;
1701
1702 exit_mfg_deactivate:
1703         release_firmware(fw);
1704
1705         /* Patching failed. Disable the manufacturer mode with reset and
1706          * deactivate the downloaded firmware patches.
1707          */
1708         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
1709                              mfg_reset_deactivate, HCI_INIT_TIMEOUT);
1710         if (IS_ERR(skb)) {
1711                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1712                        hdev->name, PTR_ERR(skb));
1713                 return PTR_ERR(skb);
1714         }
1715         kfree_skb(skb);
1716
1717         BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1718                 hdev->name);
1719
1720         btintel_check_bdaddr(hdev);
1721         return 0;
1722 }
1723
1724 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
1725 {
1726         struct sk_buff *skb;
1727         struct hci_event_hdr *hdr;
1728         struct hci_ev_cmd_complete *evt;
1729
1730         skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_ATOMIC);
1731         if (!skb)
1732                 return -ENOMEM;
1733
1734         hdr = (struct hci_event_hdr *)skb_put(skb, sizeof(*hdr));
1735         hdr->evt = HCI_EV_CMD_COMPLETE;
1736         hdr->plen = sizeof(*evt) + 1;
1737
1738         evt = (struct hci_ev_cmd_complete *)skb_put(skb, sizeof(*evt));
1739         evt->ncmd = 0x01;
1740         evt->opcode = cpu_to_le16(opcode);
1741
1742         *skb_put(skb, 1) = 0x00;
1743
1744         bt_cb(skb)->pkt_type = HCI_EVENT_PKT;
1745
1746         return hci_recv_frame(hdev, skb);
1747 }
1748
1749 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
1750                                  int count)
1751 {
1752         /* When the device is in bootloader mode, then it can send
1753          * events via the bulk endpoint. These events are treated the
1754          * same way as the ones received from the interrupt endpoint.
1755          */
1756         if (test_bit(BTUSB_BOOTLOADER, &data->flags))
1757                 return btusb_recv_intr(data, buffer, count);
1758
1759         return btusb_recv_bulk(data, buffer, count);
1760 }
1761
1762 static void btusb_intel_bootup(struct btusb_data *data, const void *ptr,
1763                                unsigned int len)
1764 {
1765         const struct intel_bootup *evt = ptr;
1766
1767         if (len != sizeof(*evt))
1768                 return;
1769
1770         if (test_and_clear_bit(BTUSB_BOOTING, &data->flags)) {
1771                 smp_mb__after_atomic();
1772                 wake_up_bit(&data->flags, BTUSB_BOOTING);
1773         }
1774 }
1775
1776 static void btusb_intel_secure_send_result(struct btusb_data *data,
1777                                            const void *ptr, unsigned int len)
1778 {
1779         const struct intel_secure_send_result *evt = ptr;
1780
1781         if (len != sizeof(*evt))
1782                 return;
1783
1784         if (evt->result)
1785                 set_bit(BTUSB_FIRMWARE_FAILED, &data->flags);
1786
1787         if (test_and_clear_bit(BTUSB_DOWNLOADING, &data->flags) &&
1788             test_bit(BTUSB_FIRMWARE_LOADED, &data->flags)) {
1789                 smp_mb__after_atomic();
1790                 wake_up_bit(&data->flags, BTUSB_DOWNLOADING);
1791         }
1792 }
1793
1794 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
1795 {
1796         struct btusb_data *data = hci_get_drvdata(hdev);
1797
1798         if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1799                 struct hci_event_hdr *hdr = (void *)skb->data;
1800
1801                 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
1802                     hdr->plen > 0) {
1803                         const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
1804                         unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
1805
1806                         switch (skb->data[2]) {
1807                         case 0x02:
1808                                 /* When switching to the operational firmware
1809                                  * the device sends a vendor specific event
1810                                  * indicating that the bootup completed.
1811                                  */
1812                                 btusb_intel_bootup(data, ptr, len);
1813                                 break;
1814                         case 0x06:
1815                                 /* When the firmware loading completes the
1816                                  * device sends out a vendor specific event
1817                                  * indicating the result of the firmware
1818                                  * loading.
1819                                  */
1820                                 btusb_intel_secure_send_result(data, ptr, len);
1821                                 break;
1822                         }
1823                 }
1824         }
1825
1826         return hci_recv_frame(hdev, skb);
1827 }
1828
1829 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
1830 {
1831         struct btusb_data *data = hci_get_drvdata(hdev);
1832         struct urb *urb;
1833
1834         BT_DBG("%s", hdev->name);
1835
1836         switch (bt_cb(skb)->pkt_type) {
1837         case HCI_COMMAND_PKT:
1838                 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1839                         struct hci_command_hdr *cmd = (void *)skb->data;
1840                         __u16 opcode = le16_to_cpu(cmd->opcode);
1841
1842                         /* When in bootloader mode and the command 0xfc09
1843                          * is received, it needs to be send down the
1844                          * bulk endpoint. So allocate a bulk URB instead.
1845                          */
1846                         if (opcode == 0xfc09)
1847                                 urb = alloc_bulk_urb(hdev, skb);
1848                         else
1849                                 urb = alloc_ctrl_urb(hdev, skb);
1850
1851                         /* When the 0xfc01 command is issued to boot into
1852                          * the operational firmware, it will actually not
1853                          * send a command complete event. To keep the flow
1854                          * control working inject that event here.
1855                          */
1856                         if (opcode == 0xfc01)
1857                                 inject_cmd_complete(hdev, opcode);
1858                 } else {
1859                         urb = alloc_ctrl_urb(hdev, skb);
1860                 }
1861                 if (IS_ERR(urb))
1862                         return PTR_ERR(urb);
1863
1864                 hdev->stat.cmd_tx++;
1865                 return submit_or_queue_tx_urb(hdev, urb);
1866
1867         case HCI_ACLDATA_PKT:
1868                 urb = alloc_bulk_urb(hdev, skb);
1869                 if (IS_ERR(urb))
1870                         return PTR_ERR(urb);
1871
1872                 hdev->stat.acl_tx++;
1873                 return submit_or_queue_tx_urb(hdev, urb);
1874
1875         case HCI_SCODATA_PKT:
1876                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1877                         return -ENODEV;
1878
1879                 urb = alloc_isoc_urb(hdev, skb);
1880                 if (IS_ERR(urb))
1881                         return PTR_ERR(urb);
1882
1883                 hdev->stat.sco_tx++;
1884                 return submit_tx_urb(hdev, urb);
1885         }
1886
1887         return -EILSEQ;
1888 }
1889
1890 static int btusb_setup_intel_new(struct hci_dev *hdev)
1891 {
1892         static const u8 reset_param[] = { 0x00, 0x01, 0x00, 0x01,
1893                                           0x00, 0x08, 0x04, 0x00 };
1894         struct btusb_data *data = hci_get_drvdata(hdev);
1895         struct sk_buff *skb;
1896         struct intel_version *ver;
1897         struct intel_boot_params *params;
1898         const struct firmware *fw;
1899         const u8 *fw_ptr;
1900         u32 frag_len;
1901         char fwname[64];
1902         ktime_t calltime, delta, rettime;
1903         unsigned long long duration;
1904         int err;
1905
1906         BT_DBG("%s", hdev->name);
1907
1908         calltime = ktime_get();
1909
1910         /* Read the Intel version information to determine if the device
1911          * is in bootloader mode or if it already has operational firmware
1912          * loaded.
1913          */
1914         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1915         if (IS_ERR(skb)) {
1916                 BT_ERR("%s: Reading Intel version information failed (%ld)",
1917                        hdev->name, PTR_ERR(skb));
1918                 return PTR_ERR(skb);
1919         }
1920
1921         if (skb->len != sizeof(*ver)) {
1922                 BT_ERR("%s: Intel version event size mismatch", hdev->name);
1923                 kfree_skb(skb);
1924                 return -EILSEQ;
1925         }
1926
1927         ver = (struct intel_version *)skb->data;
1928
1929         /* The hardware platform number has a fixed value of 0x37 and
1930          * for now only accept this single value.
1931          */
1932         if (ver->hw_platform != 0x37) {
1933                 BT_ERR("%s: Unsupported Intel hardware platform (%u)",
1934                        hdev->name, ver->hw_platform);
1935                 kfree_skb(skb);
1936                 return -EINVAL;
1937         }
1938
1939         /* At the moment only the hardware variant iBT 3.0 (LnP/SfP) is
1940          * supported by this firmware loading method. This check has been
1941          * put in place to ensure correct forward compatibility options
1942          * when newer hardware variants come along.
1943          */
1944         if (ver->hw_variant != 0x0b) {
1945                 BT_ERR("%s: Unsupported Intel hardware variant (%u)",
1946                        hdev->name, ver->hw_variant);
1947                 kfree_skb(skb);
1948                 return -EINVAL;
1949         }
1950
1951         btintel_version_info(hdev, ver);
1952
1953         /* The firmware variant determines if the device is in bootloader
1954          * mode or is running operational firmware. The value 0x06 identifies
1955          * the bootloader and the value 0x23 identifies the operational
1956          * firmware.
1957          *
1958          * When the operational firmware is already present, then only
1959          * the check for valid Bluetooth device address is needed. This
1960          * determines if the device will be added as configured or
1961          * unconfigured controller.
1962          *
1963          * It is not possible to use the Secure Boot Parameters in this
1964          * case since that command is only available in bootloader mode.
1965          */
1966         if (ver->fw_variant == 0x23) {
1967                 kfree_skb(skb);
1968                 clear_bit(BTUSB_BOOTLOADER, &data->flags);
1969                 btintel_check_bdaddr(hdev);
1970                 return 0;
1971         }
1972
1973         /* If the device is not in bootloader mode, then the only possible
1974          * choice is to return an error and abort the device initialization.
1975          */
1976         if (ver->fw_variant != 0x06) {
1977                 BT_ERR("%s: Unsupported Intel firmware variant (%u)",
1978                        hdev->name, ver->fw_variant);
1979                 kfree_skb(skb);
1980                 return -ENODEV;
1981         }
1982
1983         kfree_skb(skb);
1984
1985         /* Read the secure boot parameters to identify the operating
1986          * details of the bootloader.
1987          */
1988         skb = __hci_cmd_sync(hdev, 0xfc0d, 0, NULL, HCI_INIT_TIMEOUT);
1989         if (IS_ERR(skb)) {
1990                 BT_ERR("%s: Reading Intel boot parameters failed (%ld)",
1991                        hdev->name, PTR_ERR(skb));
1992                 return PTR_ERR(skb);
1993         }
1994
1995         if (skb->len != sizeof(*params)) {
1996                 BT_ERR("%s: Intel boot parameters size mismatch", hdev->name);
1997                 kfree_skb(skb);
1998                 return -EILSEQ;
1999         }
2000
2001         params = (struct intel_boot_params *)skb->data;
2002
2003         BT_INFO("%s: Device revision is %u", hdev->name,
2004                 le16_to_cpu(params->dev_revid));
2005
2006         BT_INFO("%s: Secure boot is %s", hdev->name,
2007                 params->secure_boot ? "enabled" : "disabled");
2008
2009         BT_INFO("%s: Minimum firmware build %u week %u %u", hdev->name,
2010                 params->min_fw_build_nn, params->min_fw_build_cw,
2011                 2000 + params->min_fw_build_yy);
2012
2013         /* It is required that every single firmware fragment is acknowledged
2014          * with a command complete event. If the boot parameters indicate
2015          * that this bootloader does not send them, then abort the setup.
2016          */
2017         if (params->limited_cce != 0x00) {
2018                 BT_ERR("%s: Unsupported Intel firmware loading method (%u)",
2019                        hdev->name, params->limited_cce);
2020                 kfree_skb(skb);
2021                 return -EINVAL;
2022         }
2023
2024         /* If the OTP has no valid Bluetooth device address, then there will
2025          * also be no valid address for the operational firmware.
2026          */
2027         if (!bacmp(&params->otp_bdaddr, BDADDR_ANY)) {
2028                 BT_INFO("%s: No device address configured", hdev->name);
2029                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2030         }
2031
2032         /* With this Intel bootloader only the hardware variant and device
2033          * revision information are used to select the right firmware.
2034          *
2035          * Currently this bootloader support is limited to hardware variant
2036          * iBT 3.0 (LnP/SfP) which is identified by the value 11 (0x0b).
2037          */
2038         snprintf(fwname, sizeof(fwname), "intel/ibt-11-%u.sfi",
2039                  le16_to_cpu(params->dev_revid));
2040
2041         err = request_firmware(&fw, fwname, &hdev->dev);
2042         if (err < 0) {
2043                 BT_ERR("%s: Failed to load Intel firmware file (%d)",
2044                        hdev->name, err);
2045                 kfree_skb(skb);
2046                 return err;
2047         }
2048
2049         BT_INFO("%s: Found device firmware: %s", hdev->name, fwname);
2050
2051         /* Save the DDC file name for later use to apply once the firmware
2052          * downloading is done.
2053          */
2054         snprintf(fwname, sizeof(fwname), "intel/ibt-11-%u.ddc",
2055                  le16_to_cpu(params->dev_revid));
2056
2057         kfree_skb(skb);
2058
2059         if (fw->size < 644) {
2060                 BT_ERR("%s: Invalid size of firmware file (%zu)",
2061                        hdev->name, fw->size);
2062                 err = -EBADF;
2063                 goto done;
2064         }
2065
2066         set_bit(BTUSB_DOWNLOADING, &data->flags);
2067
2068         /* Start the firmware download transaction with the Init fragment
2069          * represented by the 128 bytes of CSS header.
2070          */
2071         err = btintel_secure_send(hdev, 0x00, 128, fw->data);
2072         if (err < 0) {
2073                 BT_ERR("%s: Failed to send firmware header (%d)",
2074                        hdev->name, err);
2075                 goto done;
2076         }
2077
2078         /* Send the 256 bytes of public key information from the firmware
2079          * as the PKey fragment.
2080          */
2081         err = btintel_secure_send(hdev, 0x03, 256, fw->data + 128);
2082         if (err < 0) {
2083                 BT_ERR("%s: Failed to send firmware public key (%d)",
2084                        hdev->name, err);
2085                 goto done;
2086         }
2087
2088         /* Send the 256 bytes of signature information from the firmware
2089          * as the Sign fragment.
2090          */
2091         err = btintel_secure_send(hdev, 0x02, 256, fw->data + 388);
2092         if (err < 0) {
2093                 BT_ERR("%s: Failed to send firmware signature (%d)",
2094                        hdev->name, err);
2095                 goto done;
2096         }
2097
2098         fw_ptr = fw->data + 644;
2099         frag_len = 0;
2100
2101         while (fw_ptr - fw->data < fw->size) {
2102                 struct hci_command_hdr *cmd = (void *)(fw_ptr + frag_len);
2103
2104                 frag_len += sizeof(*cmd) + cmd->plen;
2105
2106                 /* The parameter length of the secure send command requires
2107                  * a 4 byte alignment. It happens so that the firmware file
2108                  * contains proper Intel_NOP commands to align the fragments
2109                  * as needed.
2110                  *
2111                  * Send set of commands with 4 byte alignment from the
2112                  * firmware data buffer as a single Data fragement.
2113                  */
2114                 if (!(frag_len % 4)) {
2115                         err = btintel_secure_send(hdev, 0x01, frag_len, fw_ptr);
2116                         if (err < 0) {
2117                                 BT_ERR("%s: Failed to send firmware data (%d)",
2118                                        hdev->name, err);
2119                                 goto done;
2120                         }
2121
2122                         fw_ptr += frag_len;
2123                         frag_len = 0;
2124                 }
2125         }
2126
2127         set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2128
2129         BT_INFO("%s: Waiting for firmware download to complete", hdev->name);
2130
2131         /* Before switching the device into operational mode and with that
2132          * booting the loaded firmware, wait for the bootloader notification
2133          * that all fragments have been successfully received.
2134          *
2135          * When the event processing receives the notification, then the
2136          * BTUSB_DOWNLOADING flag will be cleared.
2137          *
2138          * The firmware loading should not take longer than 5 seconds
2139          * and thus just timeout if that happens and fail the setup
2140          * of this device.
2141          */
2142         err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
2143                                   TASK_INTERRUPTIBLE,
2144                                   msecs_to_jiffies(5000));
2145         if (err == 1) {
2146                 BT_ERR("%s: Firmware loading interrupted", hdev->name);
2147                 err = -EINTR;
2148                 goto done;
2149         }
2150
2151         if (err) {
2152                 BT_ERR("%s: Firmware loading timeout", hdev->name);
2153                 err = -ETIMEDOUT;
2154                 goto done;
2155         }
2156
2157         if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) {
2158                 BT_ERR("%s: Firmware loading failed", hdev->name);
2159                 err = -ENOEXEC;
2160                 goto done;
2161         }
2162
2163         rettime = ktime_get();
2164         delta = ktime_sub(rettime, calltime);
2165         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2166
2167         BT_INFO("%s: Firmware loaded in %llu usecs", hdev->name, duration);
2168
2169 done:
2170         release_firmware(fw);
2171
2172         if (err < 0)
2173                 return err;
2174
2175         calltime = ktime_get();
2176
2177         set_bit(BTUSB_BOOTING, &data->flags);
2178
2179         skb = __hci_cmd_sync(hdev, 0xfc01, sizeof(reset_param), reset_param,
2180                              HCI_INIT_TIMEOUT);
2181         if (IS_ERR(skb))
2182                 return PTR_ERR(skb);
2183
2184         kfree_skb(skb);
2185
2186         /* The bootloader will not indicate when the device is ready. This
2187          * is done by the operational firmware sending bootup notification.
2188          *
2189          * Booting into operational firmware should not take longer than
2190          * 1 second. However if that happens, then just fail the setup
2191          * since something went wrong.
2192          */
2193         BT_INFO("%s: Waiting for device to boot", hdev->name);
2194
2195         err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING,
2196                                   TASK_INTERRUPTIBLE,
2197                                   msecs_to_jiffies(1000));
2198
2199         if (err == 1) {
2200                 BT_ERR("%s: Device boot interrupted", hdev->name);
2201                 return -EINTR;
2202         }
2203
2204         if (err) {
2205                 BT_ERR("%s: Device boot timeout", hdev->name);
2206                 return -ETIMEDOUT;
2207         }
2208
2209         rettime = ktime_get();
2210         delta = ktime_sub(rettime, calltime);
2211         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2212
2213         BT_INFO("%s: Device booted in %llu usecs", hdev->name, duration);
2214
2215         clear_bit(BTUSB_BOOTLOADER, &data->flags);
2216
2217         /* Once the device is running in operational mode, it needs to apply
2218          * the device configuration (DDC) parameters.
2219          *
2220          * The device can work without DDC parameters, so even if it fails
2221          * to load the file, no need to fail the setup.
2222          */
2223         btintel_load_ddc_config(hdev, fwname);
2224
2225         return 0;
2226 }
2227
2228 static int btusb_shutdown_intel(struct hci_dev *hdev)
2229 {
2230         struct sk_buff *skb;
2231         long ret;
2232
2233         /* Some platforms have an issue with BT LED when the interface is
2234          * down or BT radio is turned off, which takes 5 seconds to BT LED
2235          * goes off. This command turns off the BT LED immediately.
2236          */
2237         skb = __hci_cmd_sync(hdev, 0xfc3f, 0, NULL, HCI_INIT_TIMEOUT);
2238         if (IS_ERR(skb)) {
2239                 ret = PTR_ERR(skb);
2240                 BT_ERR("%s: turning off Intel device LED failed (%ld)",
2241                        hdev->name, ret);
2242                 return ret;
2243         }
2244         kfree_skb(skb);
2245
2246         return 0;
2247 }
2248
2249 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
2250                                     const bdaddr_t *bdaddr)
2251 {
2252         struct sk_buff *skb;
2253         u8 buf[8];
2254         long ret;
2255
2256         buf[0] = 0xfe;
2257         buf[1] = sizeof(bdaddr_t);
2258         memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
2259
2260         skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2261         if (IS_ERR(skb)) {
2262                 ret = PTR_ERR(skb);
2263                 BT_ERR("%s: changing Marvell device address failed (%ld)",
2264                        hdev->name, ret);
2265                 return ret;
2266         }
2267         kfree_skb(skb);
2268
2269         return 0;
2270 }
2271
2272 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
2273                                     const bdaddr_t *bdaddr)
2274 {
2275         struct sk_buff *skb;
2276         u8 buf[10];
2277         long ret;
2278
2279         buf[0] = 0x01;
2280         buf[1] = 0x01;
2281         buf[2] = 0x00;
2282         buf[3] = sizeof(bdaddr_t);
2283         memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
2284
2285         skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2286         if (IS_ERR(skb)) {
2287                 ret = PTR_ERR(skb);
2288                 BT_ERR("%s: Change address command failed (%ld)",
2289                        hdev->name, ret);
2290                 return ret;
2291         }
2292         kfree_skb(skb);
2293
2294         return 0;
2295 }
2296
2297 #define QCA_DFU_PACKET_LEN      4096
2298
2299 #define QCA_GET_TARGET_VERSION  0x09
2300 #define QCA_CHECK_STATUS        0x05
2301 #define QCA_DFU_DOWNLOAD        0x01
2302
2303 #define QCA_SYSCFG_UPDATED      0x40
2304 #define QCA_PATCH_UPDATED       0x80
2305 #define QCA_DFU_TIMEOUT         3000
2306
2307 struct qca_version {
2308         __le32  rom_version;
2309         __le32  patch_version;
2310         __le32  ram_version;
2311         __le32  ref_clock;
2312         __u8    reserved[4];
2313 } __packed;
2314
2315 struct qca_rampatch_version {
2316         __le16  rom_version;
2317         __le16  patch_version;
2318 } __packed;
2319
2320 struct qca_device_info {
2321         u32     rom_version;
2322         u8      rampatch_hdr;   /* length of header in rampatch */
2323         u8      nvm_hdr;        /* length of header in NVM */
2324         u8      ver_offset;     /* offset of version structure in rampatch */
2325 };
2326
2327 static const struct qca_device_info qca_devices_table[] = {
2328         { 0x00000100, 20, 4, 10 }, /* Rome 1.0 */
2329         { 0x00000101, 20, 4, 10 }, /* Rome 1.1 */
2330         { 0x00000200, 28, 4, 18 }, /* Rome 2.0 */
2331         { 0x00000201, 28, 4, 18 }, /* Rome 2.1 */
2332         { 0x00000300, 28, 4, 18 }, /* Rome 3.0 */
2333         { 0x00000302, 28, 4, 18 }, /* Rome 3.2 */
2334 };
2335
2336 static int btusb_qca_send_vendor_req(struct hci_dev *hdev, u8 request,
2337                                      void *data, u16 size)
2338 {
2339         struct btusb_data *btdata = hci_get_drvdata(hdev);
2340         struct usb_device *udev = btdata->udev;
2341         int pipe, err;
2342         u8 *buf;
2343
2344         buf = kmalloc(size, GFP_KERNEL);
2345         if (!buf)
2346                 return -ENOMEM;
2347
2348         /* Found some of USB hosts have IOT issues with ours so that we should
2349          * not wait until HCI layer is ready.
2350          */
2351         pipe = usb_rcvctrlpipe(udev, 0);
2352         err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
2353                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2354         if (err < 0) {
2355                 BT_ERR("%s: Failed to access otp area (%d)", hdev->name, err);
2356                 goto done;
2357         }
2358
2359         memcpy(data, buf, size);
2360
2361 done:
2362         kfree(buf);
2363
2364         return err;
2365 }
2366
2367 static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
2368                                        const struct firmware *firmware,
2369                                        size_t hdr_size)
2370 {
2371         struct btusb_data *btdata = hci_get_drvdata(hdev);
2372         struct usb_device *udev = btdata->udev;
2373         size_t count, size, sent = 0;
2374         int pipe, len, err;
2375         u8 *buf;
2376
2377         buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
2378         if (!buf)
2379                 return -ENOMEM;
2380
2381         count = firmware->size;
2382
2383         size = min_t(size_t, count, hdr_size);
2384         memcpy(buf, firmware->data, size);
2385
2386         /* USB patches should go down to controller through USB path
2387          * because binary format fits to go down through USB channel.
2388          * USB control path is for patching headers and USB bulk is for
2389          * patch body.
2390          */
2391         pipe = usb_sndctrlpipe(udev, 0);
2392         err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
2393                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2394         if (err < 0) {
2395                 BT_ERR("%s: Failed to send headers (%d)", hdev->name, err);
2396                 goto done;
2397         }
2398
2399         sent += size;
2400         count -= size;
2401
2402         while (count) {
2403                 size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
2404
2405                 memcpy(buf, firmware->data + sent, size);
2406
2407                 pipe = usb_sndbulkpipe(udev, 0x02);
2408                 err = usb_bulk_msg(udev, pipe, buf, size, &len,
2409                                    QCA_DFU_TIMEOUT);
2410                 if (err < 0) {
2411                         BT_ERR("%s: Failed to send body at %zd of %zd (%d)",
2412                                hdev->name, sent, firmware->size, err);
2413                         break;
2414                 }
2415
2416                 if (size != len) {
2417                         BT_ERR("%s: Failed to get bulk buffer", hdev->name);
2418                         err = -EILSEQ;
2419                         break;
2420                 }
2421
2422                 sent  += size;
2423                 count -= size;
2424         }
2425
2426 done:
2427         kfree(buf);
2428         return err;
2429 }
2430
2431 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
2432                                          struct qca_version *ver,
2433                                          const struct qca_device_info *info)
2434 {
2435         struct qca_rampatch_version *rver;
2436         const struct firmware *fw;
2437         u32 ver_rom, ver_patch;
2438         u16 rver_rom, rver_patch;
2439         char fwname[64];
2440         int err;
2441
2442         ver_rom = le32_to_cpu(ver->rom_version);
2443         ver_patch = le32_to_cpu(ver->patch_version);
2444
2445         snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom);
2446
2447         err = request_firmware(&fw, fwname, &hdev->dev);
2448         if (err) {
2449                 BT_ERR("%s: failed to request rampatch file: %s (%d)",
2450                        hdev->name, fwname, err);
2451                 return err;
2452         }
2453
2454         BT_INFO("%s: using rampatch file: %s", hdev->name, fwname);
2455
2456         rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
2457         rver_rom = le16_to_cpu(rver->rom_version);
2458         rver_patch = le16_to_cpu(rver->patch_version);
2459
2460         BT_INFO("%s: QCA: patch rome 0x%x build 0x%x, firmware rome 0x%x "
2461                 "build 0x%x", hdev->name, rver_rom, rver_patch, ver_rom,
2462                 ver_patch);
2463
2464         if (rver_rom != ver_rom || rver_patch <= ver_patch) {
2465                 BT_ERR("%s: rampatch file version did not match with firmware",
2466                        hdev->name);
2467                 err = -EINVAL;
2468                 goto done;
2469         }
2470
2471         err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
2472
2473 done:
2474         release_firmware(fw);
2475
2476         return err;
2477 }
2478
2479 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
2480                                     struct qca_version *ver,
2481                                     const struct qca_device_info *info)
2482 {
2483         const struct firmware *fw;
2484         char fwname[64];
2485         int err;
2486
2487         snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x.bin",
2488                  le32_to_cpu(ver->rom_version));
2489
2490         err = request_firmware(&fw, fwname, &hdev->dev);
2491         if (err) {
2492                 BT_ERR("%s: failed to request NVM file: %s (%d)",
2493                        hdev->name, fwname, err);
2494                 return err;
2495         }
2496
2497         BT_INFO("%s: using NVM file: %s", hdev->name, fwname);
2498
2499         err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
2500
2501         release_firmware(fw);
2502
2503         return err;
2504 }
2505
2506 static int btusb_setup_qca(struct hci_dev *hdev)
2507 {
2508         const struct qca_device_info *info = NULL;
2509         struct qca_version ver;
2510         u32 ver_rom;
2511         u8 status;
2512         int i, err;
2513
2514         err = btusb_qca_send_vendor_req(hdev, QCA_GET_TARGET_VERSION, &ver,
2515                                         sizeof(ver));
2516         if (err < 0)
2517                 return err;
2518
2519         ver_rom = le32_to_cpu(ver.rom_version);
2520         for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
2521                 if (ver_rom == qca_devices_table[i].rom_version)
2522                         info = &qca_devices_table[i];
2523         }
2524         if (!info) {
2525                 BT_ERR("%s: don't support firmware rome 0x%x", hdev->name,
2526                        ver_rom);
2527                 return -ENODEV;
2528         }
2529
2530         err = btusb_qca_send_vendor_req(hdev, QCA_CHECK_STATUS, &status,
2531                                         sizeof(status));
2532         if (err < 0)
2533                 return err;
2534
2535         if (!(status & QCA_PATCH_UPDATED)) {
2536                 err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
2537                 if (err < 0)
2538                         return err;
2539         }
2540
2541         if (!(status & QCA_SYSCFG_UPDATED)) {
2542                 err = btusb_setup_qca_load_nvm(hdev, &ver, info);
2543                 if (err < 0)
2544                         return err;
2545         }
2546
2547         return 0;
2548 }
2549
2550 static int btusb_probe(struct usb_interface *intf,
2551                        const struct usb_device_id *id)
2552 {
2553         struct usb_endpoint_descriptor *ep_desc;
2554         struct btusb_data *data;
2555         struct hci_dev *hdev;
2556         int i, err;
2557
2558         BT_DBG("intf %p id %p", intf, id);
2559
2560         /* interface numbers are hardcoded in the spec */
2561         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
2562                 return -ENODEV;
2563
2564         if (!id->driver_info) {
2565                 const struct usb_device_id *match;
2566
2567                 match = usb_match_id(intf, blacklist_table);
2568                 if (match)
2569                         id = match;
2570         }
2571
2572         if (id->driver_info == BTUSB_IGNORE)
2573                 return -ENODEV;
2574
2575         if (id->driver_info & BTUSB_ATH3012) {
2576                 struct usb_device *udev = interface_to_usbdev(intf);
2577
2578                 /* Old firmware would otherwise let ath3k driver load
2579                  * patch and sysconfig files */
2580                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
2581                         return -ENODEV;
2582         }
2583
2584         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
2585         if (!data)
2586                 return -ENOMEM;
2587
2588         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2589                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2590
2591                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
2592                         data->intr_ep = ep_desc;
2593                         continue;
2594                 }
2595
2596                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
2597                         data->bulk_tx_ep = ep_desc;
2598                         continue;
2599                 }
2600
2601                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
2602                         data->bulk_rx_ep = ep_desc;
2603                         continue;
2604                 }
2605         }
2606
2607         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
2608                 return -ENODEV;
2609
2610         if (id->driver_info & BTUSB_AMP) {
2611                 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
2612                 data->cmdreq = 0x2b;
2613         } else {
2614                 data->cmdreq_type = USB_TYPE_CLASS;
2615                 data->cmdreq = 0x00;
2616         }
2617
2618         data->udev = interface_to_usbdev(intf);
2619         data->intf = intf;
2620
2621         INIT_WORK(&data->work, btusb_work);
2622         INIT_WORK(&data->waker, btusb_waker);
2623         init_usb_anchor(&data->deferred);
2624         init_usb_anchor(&data->tx_anchor);
2625         spin_lock_init(&data->txlock);
2626
2627         init_usb_anchor(&data->intr_anchor);
2628         init_usb_anchor(&data->bulk_anchor);
2629         init_usb_anchor(&data->isoc_anchor);
2630         spin_lock_init(&data->rxlock);
2631
2632         if (id->driver_info & BTUSB_INTEL_NEW) {
2633                 data->recv_event = btusb_recv_event_intel;
2634                 data->recv_bulk = btusb_recv_bulk_intel;
2635                 set_bit(BTUSB_BOOTLOADER, &data->flags);
2636         } else {
2637                 data->recv_event = hci_recv_frame;
2638                 data->recv_bulk = btusb_recv_bulk;
2639         }
2640
2641         hdev = hci_alloc_dev();
2642         if (!hdev)
2643                 return -ENOMEM;
2644
2645         hdev->bus = HCI_USB;
2646         hci_set_drvdata(hdev, data);
2647
2648         if (id->driver_info & BTUSB_AMP)
2649                 hdev->dev_type = HCI_AMP;
2650         else
2651                 hdev->dev_type = HCI_BREDR;
2652
2653         data->hdev = hdev;
2654
2655         SET_HCIDEV_DEV(hdev, &intf->dev);
2656
2657         hdev->open   = btusb_open;
2658         hdev->close  = btusb_close;
2659         hdev->flush  = btusb_flush;
2660         hdev->send   = btusb_send_frame;
2661         hdev->notify = btusb_notify;
2662
2663         if (id->driver_info & BTUSB_BCM92035)
2664                 hdev->setup = btusb_setup_bcm92035;
2665
2666 #ifdef CONFIG_BT_HCIBTUSB_BCM
2667         if (id->driver_info & BTUSB_BCM_PATCHRAM) {
2668                 hdev->setup = btbcm_setup_patchram;
2669                 hdev->set_bdaddr = btbcm_set_bdaddr;
2670         }
2671
2672         if (id->driver_info & BTUSB_BCM_APPLE)
2673                 hdev->setup = btbcm_setup_apple;
2674 #endif
2675
2676         if (id->driver_info & BTUSB_INTEL) {
2677                 hdev->setup = btusb_setup_intel;
2678                 hdev->shutdown = btusb_shutdown_intel;
2679                 hdev->set_bdaddr = btintel_set_bdaddr;
2680                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2681                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
2682         }
2683
2684         if (id->driver_info & BTUSB_INTEL_NEW) {
2685                 hdev->send = btusb_send_frame_intel;
2686                 hdev->setup = btusb_setup_intel_new;
2687                 hdev->hw_error = btintel_hw_error;
2688                 hdev->set_bdaddr = btintel_set_bdaddr;
2689                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2690         }
2691
2692         if (id->driver_info & BTUSB_MARVELL)
2693                 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
2694
2695         if (id->driver_info & BTUSB_SWAVE) {
2696                 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
2697                 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
2698         }
2699
2700         if (id->driver_info & BTUSB_INTEL_BOOT)
2701                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
2702
2703         if (id->driver_info & BTUSB_ATH3012) {
2704                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
2705                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
2706                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2707         }
2708
2709         if (id->driver_info & BTUSB_QCA_ROME) {
2710                 data->setup_on_usb = btusb_setup_qca;
2711                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
2712         }
2713
2714 #ifdef CONFIG_BT_HCIBTUSB_RTL
2715         if (id->driver_info & BTUSB_REALTEK) {
2716                 hdev->setup = btrtl_setup_realtek;
2717
2718                 /* Realtek devices lose their updated firmware over suspend,
2719                  * but the USB hub doesn't notice any status change.
2720                  * Explicitly request a device reset on resume.
2721                  */
2722                 set_bit(BTUSB_RESET_RESUME, &data->flags);
2723         }
2724 #endif
2725
2726         if (id->driver_info & BTUSB_AMP) {
2727                 /* AMP controllers do not support SCO packets */
2728                 data->isoc = NULL;
2729         } else {
2730                 /* Interface numbers are hardcoded in the specification */
2731                 data->isoc = usb_ifnum_to_if(data->udev, 1);
2732         }
2733
2734         if (!reset)
2735                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2736
2737         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
2738                 if (!disable_scofix)
2739                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
2740         }
2741
2742         if (id->driver_info & BTUSB_BROKEN_ISOC)
2743                 data->isoc = NULL;
2744
2745         if (id->driver_info & BTUSB_DIGIANSWER) {
2746                 data->cmdreq_type = USB_TYPE_VENDOR;
2747                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2748         }
2749
2750         if (id->driver_info & BTUSB_CSR) {
2751                 struct usb_device *udev = data->udev;
2752                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
2753
2754                 /* Old firmware would otherwise execute USB reset */
2755                 if (bcdDevice < 0x117)
2756                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2757
2758                 /* Fake CSR devices with broken commands */
2759                 if (bcdDevice <= 0x100 || bcdDevice == 0x134)
2760                         hdev->setup = btusb_setup_csr;
2761
2762                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
2763         }
2764
2765         if (id->driver_info & BTUSB_SNIFFER) {
2766                 struct usb_device *udev = data->udev;
2767
2768                 /* New sniffer firmware has crippled HCI interface */
2769                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
2770                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
2771         }
2772
2773         if (id->driver_info & BTUSB_INTEL_BOOT) {
2774                 /* A bug in the bootloader causes that interrupt interface is
2775                  * only enabled after receiving SetInterface(0, AltSetting=0).
2776                  */
2777                 err = usb_set_interface(data->udev, 0, 0);
2778                 if (err < 0) {
2779                         BT_ERR("failed to set interface 0, alt 0 %d", err);
2780                         hci_free_dev(hdev);
2781                         return err;
2782                 }
2783         }
2784
2785         if (data->isoc) {
2786                 err = usb_driver_claim_interface(&btusb_driver,
2787                                                  data->isoc, data);
2788                 if (err < 0) {
2789                         hci_free_dev(hdev);
2790                         return err;
2791                 }
2792         }
2793
2794         err = hci_register_dev(hdev);
2795         if (err < 0) {
2796                 hci_free_dev(hdev);
2797                 return err;
2798         }
2799
2800         usb_set_intfdata(intf, data);
2801
2802         return 0;
2803 }
2804
2805 static void btusb_disconnect(struct usb_interface *intf)
2806 {
2807         struct btusb_data *data = usb_get_intfdata(intf);
2808         struct hci_dev *hdev;
2809
2810         BT_DBG("intf %p", intf);
2811
2812         if (!data)
2813                 return;
2814
2815         hdev = data->hdev;
2816         usb_set_intfdata(data->intf, NULL);
2817
2818         if (data->isoc)
2819                 usb_set_intfdata(data->isoc, NULL);
2820
2821         hci_unregister_dev(hdev);
2822
2823         if (intf == data->isoc)
2824                 usb_driver_release_interface(&btusb_driver, data->intf);
2825         else if (data->isoc)
2826                 usb_driver_release_interface(&btusb_driver, data->isoc);
2827
2828         hci_free_dev(hdev);
2829 }
2830
2831 #ifdef CONFIG_PM
2832 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
2833 {
2834         struct btusb_data *data = usb_get_intfdata(intf);
2835
2836         BT_DBG("intf %p", intf);
2837
2838         if (data->suspend_count++)
2839                 return 0;
2840
2841         spin_lock_irq(&data->txlock);
2842         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
2843                 set_bit(BTUSB_SUSPENDING, &data->flags);
2844                 spin_unlock_irq(&data->txlock);
2845         } else {
2846                 spin_unlock_irq(&data->txlock);
2847                 data->suspend_count--;
2848                 return -EBUSY;
2849         }
2850
2851         cancel_work_sync(&data->work);
2852
2853         btusb_stop_traffic(data);
2854         usb_kill_anchored_urbs(&data->tx_anchor);
2855
2856         /* Optionally request a device reset on resume, but only when
2857          * wakeups are disabled. If wakeups are enabled we assume the
2858          * device will stay powered up throughout suspend.
2859          */
2860         if (test_bit(BTUSB_RESET_RESUME, &data->flags) &&
2861             !device_may_wakeup(&data->udev->dev))
2862                 data->udev->reset_resume = 1;
2863
2864         return 0;
2865 }
2866
2867 static void play_deferred(struct btusb_data *data)
2868 {
2869         struct urb *urb;
2870         int err;
2871
2872         while ((urb = usb_get_from_anchor(&data->deferred))) {
2873                 err = usb_submit_urb(urb, GFP_ATOMIC);
2874                 if (err < 0)
2875                         break;
2876
2877                 data->tx_in_flight++;
2878         }
2879         usb_scuttle_anchored_urbs(&data->deferred);
2880 }
2881
2882 static int btusb_resume(struct usb_interface *intf)
2883 {
2884         struct btusb_data *data = usb_get_intfdata(intf);
2885         struct hci_dev *hdev = data->hdev;
2886         int err = 0;
2887
2888         BT_DBG("intf %p", intf);
2889
2890         if (--data->suspend_count)
2891                 return 0;
2892
2893         if (!test_bit(HCI_RUNNING, &hdev->flags))
2894                 goto done;
2895
2896         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
2897                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
2898                 if (err < 0) {
2899                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
2900                         goto failed;
2901                 }
2902         }
2903
2904         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
2905                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
2906                 if (err < 0) {
2907                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
2908                         goto failed;
2909                 }
2910
2911                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
2912         }
2913
2914         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
2915                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
2916                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
2917                 else
2918                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
2919         }
2920
2921         spin_lock_irq(&data->txlock);
2922         play_deferred(data);
2923         clear_bit(BTUSB_SUSPENDING, &data->flags);
2924         spin_unlock_irq(&data->txlock);
2925         schedule_work(&data->work);
2926
2927         return 0;
2928
2929 failed:
2930         usb_scuttle_anchored_urbs(&data->deferred);
2931 done:
2932         spin_lock_irq(&data->txlock);
2933         clear_bit(BTUSB_SUSPENDING, &data->flags);
2934         spin_unlock_irq(&data->txlock);
2935
2936         return err;
2937 }
2938 #endif
2939
2940 static struct usb_driver btusb_driver = {
2941         .name           = "btusb",
2942         .probe          = btusb_probe,
2943         .disconnect     = btusb_disconnect,
2944 #ifdef CONFIG_PM
2945         .suspend        = btusb_suspend,
2946         .resume         = btusb_resume,
2947 #endif
2948         .id_table       = btusb_table,
2949         .supports_autosuspend = 1,
2950         .disable_hub_initiated_lpm = 1,
2951 };
2952
2953 module_usb_driver(btusb_driver);
2954
2955 module_param(disable_scofix, bool, 0644);
2956 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
2957
2958 module_param(force_scofix, bool, 0644);
2959 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
2960
2961 module_param(reset, bool, 0644);
2962 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
2963
2964 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
2965 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
2966 MODULE_VERSION(VERSION);
2967 MODULE_LICENSE("GPL");