drivers/bluetooth/btusb.c

   1 /*
   2  *
   3  *  Generic Bluetooth USB driver
   4  *
   5  *  Copyright (C) 2005-2008  Marcel Holtmann <marcel@holtmann.org>
   6  *
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, write to the Free Software
  20  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  *
  22  */
  23
  24 #include <linux/module.h>
  25 #include <linux/usb.h>
  26 #include <linux/firmware.h>
  27 #include <asm/unaligned.h>
  28
  29 #include <net/bluetooth/bluetooth.h>
  30 #include <net/bluetooth/hci_core.h>
  31
  32 #include "btintel.h"
  33 #include "btbcm.h"
  34 #include "btrtl.h"
  35
  36 #define VERSION "0.8"
  37
  38 static bool disable_scofix;
  39 static bool force_scofix;
  40
  41 static bool reset = true;
  42
  43 static struct usb_driver btusb_driver;
  44
  45 #define BTUSB_IGNORE            0x01
  46 #define BTUSB_DIGIANSWER        0x02
  47 #define BTUSB_CSR               0x04
  48 #define BTUSB_SNIFFER           0x08
  49 #define BTUSB_BCM92035          0x10
  50 #define BTUSB_BROKEN_ISOC       0x20
  51 #define BTUSB_WRONG_SCO_MTU     0x40
  52 #define BTUSB_ATH3012           0x80
  53 #define BTUSB_INTEL             0x100
  54 #define BTUSB_INTEL_BOOT        0x200
  55 #define BTUSB_BCM_PATCHRAM      0x400
  56 #define BTUSB_MARVELL           0x800
  57 #define BTUSB_SWAVE             0x1000
  58 #define BTUSB_INTEL_NEW         0x2000
  59 #define BTUSB_AMP               0x4000
  60 #define BTUSB_QCA_ROME          0x8000
  61 #define BTUSB_BCM_APPLE         0x10000
  62 #define BTUSB_REALTEK           0x20000
  63
  64 static const struct usb_device_id btusb_table[] = {
  65         /* Generic Bluetooth USB device */
  66         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  67
  68         /* Generic Bluetooth AMP device */
  69         { USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP },
  70
  71         /* Generic Bluetooth USB interface */
  72         { USB_INTERFACE_INFO(0xe0, 0x01, 0x01) },
  73
  74         /* Apple-specific (Broadcom) devices */
  75         { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01),
  76           .driver_info = BTUSB_BCM_APPLE },
  77
  78         /* MediaTek MT76x0E */
  79         { USB_DEVICE(0x0e8d, 0x763f) },
  80
  81         /* Broadcom SoftSailing reporting vendor specific */
  82         { USB_DEVICE(0x0a5c, 0x21e1) },
  83
  84         /* Apple MacBookPro 7,1 */
  85         { USB_DEVICE(0x05ac, 0x8213) },
  86
  87         /* Apple iMac11,1 */
  88         { USB_DEVICE(0x05ac, 0x8215) },
  89
  90         /* Apple MacBookPro6,2 */
  91         { USB_DEVICE(0x05ac, 0x8218) },
  92
  93         /* Apple MacBookAir3,1, MacBookAir3,2 */
  94         { USB_DEVICE(0x05ac, 0x821b) },
  95
  96         /* Apple MacBookAir4,1 */
  97         { USB_DEVICE(0x05ac, 0x821f) },
  98
  99         /* Apple MacBookPro8,2 */
 100         { USB_DEVICE(0x05ac, 0x821a) },
 101
 102         /* Apple MacMini5,1 */
 103         { USB_DEVICE(0x05ac, 0x8281) },
 104
 105         /* AVM BlueFRITZ! USB v2.0 */
 106         { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE },
 107
 108         /* Bluetooth Ultraport Module from IBM */
 109         { USB_DEVICE(0x04bf, 0x030a) },
 110
 111         /* ALPS Modules with non-standard id */
 112         { USB_DEVICE(0x044e, 0x3001) },
 113         { USB_DEVICE(0x044e, 0x3002) },
 114
 115         /* Ericsson with non-standard id */
 116         { USB_DEVICE(0x0bdb, 0x1002) },
 117
 118         /* Canyon CN-BTU1 with HID interfaces */
 119         { USB_DEVICE(0x0c10, 0x0000) },
 120
 121         /* Broadcom BCM20702A0 */
 122         { USB_DEVICE(0x413c, 0x8197) },
 123
 124         /* Broadcom BCM20702B0 (Dynex/Insignia) */
 125         { USB_DEVICE(0x19ff, 0x0239), .driver_info = BTUSB_BCM_PATCHRAM },
 126
 127         /* Foxconn - Hon Hai */
 128         { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01),
 129           .driver_info = BTUSB_BCM_PATCHRAM },
 130
 131         /* Lite-On Technology - Broadcom based */
 132         { USB_VENDOR_AND_INTERFACE_INFO(0x04ca, 0xff, 0x01, 0x01),
 133           .driver_info = BTUSB_BCM_PATCHRAM },
 134
 135         /* Broadcom devices with vendor specific id */
 136         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
 137           .driver_info = BTUSB_BCM_PATCHRAM },
 138
 139         /* ASUSTek Computer - Broadcom based */
 140         { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01),
 141           .driver_info = BTUSB_BCM_PATCHRAM },
 142
 143         /* Belkin F8065bf - Broadcom based */
 144         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01),
 145           .driver_info = BTUSB_BCM_PATCHRAM },
 146
 147         /* IMC Networks - Broadcom based */
 148         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01),
 149           .driver_info = BTUSB_BCM_PATCHRAM },
 150
 151         /* Intel Bluetooth USB Bootloader (RAM module) */
 152         { USB_DEVICE(0x8087, 0x0a5a),
 153           .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
 154
 155         { }     /* Terminating entry */
 156 };
 157
 158 MODULE_DEVICE_TABLE(usb, btusb_table);
 159
 160 static const struct usb_device_id blacklist_table[] = {
 161         /* CSR BlueCore devices */
 162         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 163
 164         /* Broadcom BCM2033 without firmware */
 165         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 166
 167         /* Atheros 3011 with sflash firmware */
 168         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 169         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 170         { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE },
 171         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 172         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 173         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 174         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 175
 176         /* Atheros AR9285 Malbec with sflash firmware */
 177         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 178
 179         /* Atheros 3012 with sflash firmware */
 180         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 181         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 182         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 183         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 184         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 185         { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
 186         { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
 187         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 188         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 189         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 190         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 191         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 192         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 193         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 194         { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
 195         { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
 196         { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
 197         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 198         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 199         { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
 200         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 201         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 202         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 203         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 204         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 205         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
 206         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 207         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 208         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 209         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 210         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 211         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 212         { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 },
 213         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 214         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 215         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 216         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 217         { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
 218         { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
 219         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
 220         { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
 221
 222         /* Atheros AR5BBU12 with sflash firmware */
 223         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 224
 225         /* Atheros AR5BBU12 with sflash firmware */
 226         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 227         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 228
 229         /* QCA ROME chipset */
 230         { USB_DEVICE(0x0cf3, 0xe007), .driver_info = BTUSB_QCA_ROME },
 231         { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME },
 232         { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME },
 233
 234         /* Broadcom BCM2035 */
 235         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 236         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 237         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 238
 239         /* Broadcom BCM2045 */
 240         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 241         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 242
 243         /* IBM/Lenovo ThinkPad with Broadcom chip */
 244         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 245         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 246
 247         /* HP laptop with Broadcom chip */
 248         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 249
 250         /* Dell laptop with Broadcom chip */
 251         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 252
 253         /* Dell Wireless 370 and 410 devices */
 254         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 255         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 256
 257         /* Belkin F8T012 and F8T013 devices */
 258         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 259         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 260
 261         /* Asus WL-BTD202 device */
 262         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 263
 264         /* Kensington Bluetooth USB adapter */
 265         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 266
 267         /* RTX Telecom based adapters with buggy SCO support */
 268         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 269         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 270
 271         /* CONWISE Technology based adapters with buggy SCO support */
 272         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 273
 274         /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
 275         { USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE },
 276
 277         /* Digianswer devices */
 278         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 279         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 280
 281         /* CSR BlueCore Bluetooth Sniffer */
 282         { USB_DEVICE(0x0a12, 0x0002),
 283           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 284
 285         /* Frontline ComProbe Bluetooth Sniffer */
 286         { USB_DEVICE(0x16d3, 0x0002),
 287           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 288
 289         /* Marvell Bluetooth devices */
 290         { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
 291         { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
 292
 293         /* Intel Bluetooth devices */
 294         { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR },
 295         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 296         { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
 297         { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_NEW },
 298
 299         /* Other Intel Bluetooth devices */
 300         { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01),
 301           .driver_info = BTUSB_IGNORE },
 302
 303         /* Realtek Bluetooth devices */
 304         { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01),
 305           .driver_info = BTUSB_REALTEK },
 306
 307         /* Additional Realtek 8723AE Bluetooth devices */
 308         { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK },
 309         { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK },
 310
 311         /* Additional Realtek 8723BE Bluetooth devices */
 312         { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK },
 313         { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK },
 314         { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
 315         { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
 316         { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },
 317
 318         /* Additional Realtek 8821AE Bluetooth devices */
 319         { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
 320         { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },
 321         { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK },
 322         { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK },
 323         { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK },
 324
 325         /* Silicon Wave based devices */
 326         { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE },
 327
 328         { }     /* Terminating entry */
 329 };
 330
 331 #define BTUSB_MAX_ISOC_FRAMES   10
 332
 333 #define BTUSB_INTR_RUNNING      0
 334 #define BTUSB_BULK_RUNNING      1
 335 #define BTUSB_ISOC_RUNNING      2
 336 #define BTUSB_SUSPENDING        3
 337 #define BTUSB_DID_ISO_RESUME    4
 338 #define BTUSB_BOOTLOADER        5
 339 #define BTUSB_DOWNLOADING       6
 340 #define BTUSB_FIRMWARE_LOADED   7
 341 #define BTUSB_FIRMWARE_FAILED   8
 342 #define BTUSB_BOOTING           9
 343 #define BTUSB_RESET_RESUME      10
 344
 345 struct btusb_data {
 346         struct hci_dev       *hdev;
 347         struct usb_device    *udev;
 348         struct usb_interface *intf;
 349         struct usb_interface *isoc;
 350
 351         unsigned long flags;
 352
 353         struct work_struct work;
 354         struct work_struct waker;
 355
 356         struct usb_anchor deferred;
 357         struct usb_anchor tx_anchor;
 358         int tx_in_flight;
 359         spinlock_t txlock;
 360
 361         struct usb_anchor intr_anchor;
 362         struct usb_anchor bulk_anchor;
 363         struct usb_anchor isoc_anchor;
 364         spinlock_t rxlock;
 365
 366         struct sk_buff *evt_skb;
 367         struct sk_buff *acl_skb;
 368         struct sk_buff *sco_skb;
 369
 370         struct usb_endpoint_descriptor *intr_ep;
 371         struct usb_endpoint_descriptor *bulk_tx_ep;
 372         struct usb_endpoint_descriptor *bulk_rx_ep;
 373         struct usb_endpoint_descriptor *isoc_tx_ep;
 374         struct usb_endpoint_descriptor *isoc_rx_ep;
 375
 376         __u8 cmdreq_type;
 377         __u8 cmdreq;
 378
 379         unsigned int sco_num;
 380         int isoc_altsetting;
 381         int suspend_count;
 382
 383         int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
 384         int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
 385
 386         int (*setup_on_usb)(struct hci_dev *hdev);
 387 };
 388
 389 static inline void btusb_free_frags(struct btusb_data *data)
 390 {
 391         unsigned long flags;
 392
 393         spin_lock_irqsave(&data->rxlock, flags);
 394
 395         kfree_skb(data->evt_skb);
 396         data->evt_skb = NULL;
 397
 398         kfree_skb(data->acl_skb);
 399         data->acl_skb = NULL;
 400
 401         kfree_skb(data->sco_skb);
 402         data->sco_skb = NULL;
 403
 404         spin_unlock_irqrestore(&data->rxlock, flags);
 405 }
 406
 407 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
 408 {
 409         struct sk_buff *skb;
 410         int err = 0;
 411
 412         spin_lock(&data->rxlock);
 413         skb = data->evt_skb;
 414
 415         while (count) {
 416                 int len;
 417
 418                 if (!skb) {
 419                         skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
 420                         if (!skb) {
 421                                 err = -ENOMEM;
 422                                 break;
 423                         }
 424
 425                         bt_cb(skb)->pkt_type = HCI_EVENT_PKT;
 426                         bt_cb(skb)->expect = HCI_EVENT_HDR_SIZE;
 427                 }
 428
 429                 len = min_t(uint, bt_cb(skb)->expect, count);
 430                 memcpy(skb_put(skb, len), buffer, len);
 431
 432                 count -= len;
 433                 buffer += len;
 434                 bt_cb(skb)->expect -= len;
 435
 436                 if (skb->len == HCI_EVENT_HDR_SIZE) {
 437                         /* Complete event header */
 438                         bt_cb(skb)->expect = hci_event_hdr(skb)->plen;
 439
 440                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 441                                 kfree_skb(skb);
 442                                 skb = NULL;
 443
 444                                 err = -EILSEQ;
 445                                 break;
 446                         }
 447                 }
 448
 449                 if (bt_cb(skb)->expect == 0) {
 450                         /* Complete frame */
 451                         data->recv_event(data->hdev, skb);
 452                         skb = NULL;
 453                 }
 454         }
 455
 456         data->evt_skb = skb;
 457         spin_unlock(&data->rxlock);
 458
 459         return err;
 460 }
 461
 462 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
 463 {
 464         struct sk_buff *skb;
 465         int err = 0;
 466
 467         spin_lock(&data->rxlock);
 468         skb = data->acl_skb;
 469
 470         while (count) {
 471                 int len;
 472
 473                 if (!skb) {
 474                         skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
 475                         if (!skb) {
 476                                 err = -ENOMEM;
 477                                 break;
 478                         }
 479
 480                         bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT;
 481                         bt_cb(skb)->expect = HCI_ACL_HDR_SIZE;
 482                 }
 483
 484                 len = min_t(uint, bt_cb(skb)->expect, count);
 485                 memcpy(skb_put(skb, len), buffer, len);
 486
 487                 count -= len;
 488                 buffer += len;
 489                 bt_cb(skb)->expect -= len;
 490
 491                 if (skb->len == HCI_ACL_HDR_SIZE) {
 492                         __le16 dlen = hci_acl_hdr(skb)->dlen;
 493
 494                         /* Complete ACL header */
 495                         bt_cb(skb)->expect = __le16_to_cpu(dlen);
 496
 497                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 498                                 kfree_skb(skb);
 499                                 skb = NULL;
 500
 501                                 err = -EILSEQ;
 502                                 break;
 503                         }
 504                 }
 505
 506                 if (bt_cb(skb)->expect == 0) {
 507                         /* Complete frame */
 508                         hci_recv_frame(data->hdev, skb);
 509                         skb = NULL;
 510                 }
 511         }
 512
 513         data->acl_skb = skb;
 514         spin_unlock(&data->rxlock);
 515
 516         return err;
 517 }
 518
 519 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
 520 {
 521         struct sk_buff *skb;
 522         int err = 0;
 523
 524         spin_lock(&data->rxlock);
 525         skb = data->sco_skb;
 526
 527         while (count) {
 528                 int len;
 529
 530                 if (!skb) {
 531                         skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
 532                         if (!skb) {
 533                                 err = -ENOMEM;
 534                                 break;
 535                         }
 536
 537                         bt_cb(skb)->pkt_type = HCI_SCODATA_PKT;
 538                         bt_cb(skb)->expect = HCI_SCO_HDR_SIZE;
 539                 }
 540
 541                 len = min_t(uint, bt_cb(skb)->expect, count);
 542                 memcpy(skb_put(skb, len), buffer, len);
 543
 544                 count -= len;
 545                 buffer += len;
 546                 bt_cb(skb)->expect -= len;
 547
 548                 if (skb->len == HCI_SCO_HDR_SIZE) {
 549                         /* Complete SCO header */
 550                         bt_cb(skb)->expect = hci_sco_hdr(skb)->dlen;
 551
 552                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 553                                 kfree_skb(skb);
 554                                 skb = NULL;
 555
 556                                 err = -EILSEQ;
 557                                 break;
 558                         }
 559                 }
 560
 561                 if (bt_cb(skb)->expect == 0) {
 562                         /* Complete frame */
 563                         hci_recv_frame(data->hdev, skb);
 564                         skb = NULL;
 565                 }
 566         }
 567
 568         data->sco_skb = skb;
 569         spin_unlock(&data->rxlock);
 570
 571         return err;
 572 }
 573
 574 static void btusb_intr_complete(struct urb *urb)
 575 {
 576         struct hci_dev *hdev = urb->context;
 577         struct btusb_data *data = hci_get_drvdata(hdev);
 578         int err;
 579
 580         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 581                urb->actual_length);
 582
 583         if (!test_bit(HCI_RUNNING, &hdev->flags))
 584                 return;
 585
 586         if (urb->status == 0) {
 587                 hdev->stat.byte_rx += urb->actual_length;
 588
 589                 if (btusb_recv_intr(data, urb->transfer_buffer,
 590                                     urb->actual_length) < 0) {
 591                         BT_ERR("%s corrupted event packet", hdev->name);
 592                         hdev->stat.err_rx++;
 593                 }
 594         } else if (urb->status == -ENOENT) {
 595                 /* Avoid suspend failed when usb_kill_urb */
 596                 return;
 597         }
 598
 599         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 600                 return;
 601
 602         usb_mark_last_busy(data->udev);
 603         usb_anchor_urb(urb, &data->intr_anchor);
 604
 605         err = usb_submit_urb(urb, GFP_ATOMIC);
 606         if (err < 0) {
 607                 /* -EPERM: urb is being killed;
 608                  * -ENODEV: device got disconnected */
 609                 if (err != -EPERM && err != -ENODEV)
 610                         BT_ERR("%s urb %p failed to resubmit (%d)",
 611                                hdev->name, urb, -err);
 612                 usb_unanchor_urb(urb);
 613         }
 614 }
 615
 616 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 617 {
 618         struct btusb_data *data = hci_get_drvdata(hdev);
 619         struct urb *urb;
 620         unsigned char *buf;
 621         unsigned int pipe;
 622         int err, size;
 623
 624         BT_DBG("%s", hdev->name);
 625
 626         if (!data->intr_ep)
 627                 return -ENODEV;
 628
 629         urb = usb_alloc_urb(0, mem_flags);
 630         if (!urb)
 631                 return -ENOMEM;
 632
 633         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 634
 635         buf = kmalloc(size, mem_flags);
 636         if (!buf) {
 637                 usb_free_urb(urb);
 638                 return -ENOMEM;
 639         }
 640
 641         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 642
 643         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 644                          btusb_intr_complete, hdev, data->intr_ep->bInterval);
 645
 646         urb->transfer_flags |= URB_FREE_BUFFER;
 647
 648         usb_anchor_urb(urb, &data->intr_anchor);
 649
 650         err = usb_submit_urb(urb, mem_flags);
 651         if (err < 0) {
 652                 if (err != -EPERM && err != -ENODEV)
 653                         BT_ERR("%s urb %p submission failed (%d)",
 654                                hdev->name, urb, -err);
 655                 usb_unanchor_urb(urb);
 656         }
 657
 658         usb_free_urb(urb);
 659
 660         return err;
 661 }
 662
 663 static void btusb_bulk_complete(struct urb *urb)
 664 {
 665         struct hci_dev *hdev = urb->context;
 666         struct btusb_data *data = hci_get_drvdata(hdev);
 667         int err;
 668
 669         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 670                urb->actual_length);
 671
 672         if (!test_bit(HCI_RUNNING, &hdev->flags))
 673                 return;
 674
 675         if (urb->status == 0) {
 676                 hdev->stat.byte_rx += urb->actual_length;
 677
 678                 if (data->recv_bulk(data, urb->transfer_buffer,
 679                                     urb->actual_length) < 0) {
 680                         BT_ERR("%s corrupted ACL packet", hdev->name);
 681                         hdev->stat.err_rx++;
 682                 }
 683         } else if (urb->status == -ENOENT) {
 684                 /* Avoid suspend failed when usb_kill_urb */
 685                 return;
 686         }
 687
 688         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 689                 return;
 690
 691         usb_anchor_urb(urb, &data->bulk_anchor);
 692         usb_mark_last_busy(data->udev);
 693
 694         err = usb_submit_urb(urb, GFP_ATOMIC);
 695         if (err < 0) {
 696                 /* -EPERM: urb is being killed;
 697                  * -ENODEV: device got disconnected */
 698                 if (err != -EPERM && err != -ENODEV)
 699                         BT_ERR("%s urb %p failed to resubmit (%d)",
 700                                hdev->name, urb, -err);
 701                 usb_unanchor_urb(urb);
 702         }
 703 }
 704
 705 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 706 {
 707         struct btusb_data *data = hci_get_drvdata(hdev);
 708         struct urb *urb;
 709         unsigned char *buf;
 710         unsigned int pipe;
 711         int err, size = HCI_MAX_FRAME_SIZE;
 712
 713         BT_DBG("%s", hdev->name);
 714
 715         if (!data->bulk_rx_ep)
 716                 return -ENODEV;
 717
 718         urb = usb_alloc_urb(0, mem_flags);
 719         if (!urb)
 720                 return -ENOMEM;
 721
 722         buf = kmalloc(size, mem_flags);
 723         if (!buf) {
 724                 usb_free_urb(urb);
 725                 return -ENOMEM;
 726         }
 727
 728         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 729
 730         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
 731                           btusb_bulk_complete, hdev);
 732
 733         urb->transfer_flags |= URB_FREE_BUFFER;
 734
 735         usb_mark_last_busy(data->udev);
 736         usb_anchor_urb(urb, &data->bulk_anchor);
 737
 738         err = usb_submit_urb(urb, mem_flags);
 739         if (err < 0) {
 740                 if (err != -EPERM && err != -ENODEV)
 741                         BT_ERR("%s urb %p submission failed (%d)",
 742                                hdev->name, urb, -err);
 743                 usb_unanchor_urb(urb);
 744         }
 745
 746         usb_free_urb(urb);
 747
 748         return err;
 749 }
 750
 751 static void btusb_isoc_complete(struct urb *urb)
 752 {
 753         struct hci_dev *hdev = urb->context;
 754         struct btusb_data *data = hci_get_drvdata(hdev);
 755         int i, err;
 756
 757         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 758                urb->actual_length);
 759
 760         if (!test_bit(HCI_RUNNING, &hdev->flags))
 761                 return;
 762
 763         if (urb->status == 0) {
 764                 for (i = 0; i < urb->number_of_packets; i++) {
 765                         unsigned int offset = urb->iso_frame_desc[i].offset;
 766                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 767
 768                         if (urb->iso_frame_desc[i].status)
 769                                 continue;
 770
 771                         hdev->stat.byte_rx += length;
 772
 773                         if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
 774                                             length) < 0) {
 775                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 776                                 hdev->stat.err_rx++;
 777                         }
 778                 }
 779         } else if (urb->status == -ENOENT) {
 780                 /* Avoid suspend failed when usb_kill_urb */
 781                 return;
 782         }
 783
 784         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 785                 return;
 786
 787         usb_anchor_urb(urb, &data->isoc_anchor);
 788
 789         err = usb_submit_urb(urb, GFP_ATOMIC);
 790         if (err < 0) {
 791                 /* -EPERM: urb is being killed;
 792                  * -ENODEV: device got disconnected */
 793                 if (err != -EPERM && err != -ENODEV)
 794                         BT_ERR("%s urb %p failed to resubmit (%d)",
 795                                hdev->name, urb, -err);
 796                 usb_unanchor_urb(urb);
 797         }
 798 }
 799
 800 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 801 {
 802         int i, offset = 0;
 803
 804         BT_DBG("len %d mtu %d", len, mtu);
 805
 806         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 807                                         i++, offset += mtu, len -= mtu) {
 808                 urb->iso_frame_desc[i].offset = offset;
 809                 urb->iso_frame_desc[i].length = mtu;
 810         }
 811
 812         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 813                 urb->iso_frame_desc[i].offset = offset;
 814                 urb->iso_frame_desc[i].length = len;
 815                 i++;
 816         }
 817
 818         urb->number_of_packets = i;
 819 }
 820
 821 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 822 {
 823         struct btusb_data *data = hci_get_drvdata(hdev);
 824         struct urb *urb;
 825         unsigned char *buf;
 826         unsigned int pipe;
 827         int err, size;
 828
 829         BT_DBG("%s", hdev->name);
 830
 831         if (!data->isoc_rx_ep)
 832                 return -ENODEV;
 833
 834         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 835         if (!urb)
 836                 return -ENOMEM;
 837
 838         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 839                                                 BTUSB_MAX_ISOC_FRAMES;
 840
 841         buf = kmalloc(size, mem_flags);
 842         if (!buf) {
 843                 usb_free_urb(urb);
 844                 return -ENOMEM;
 845         }
 846
 847         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 848
 849         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 850                          hdev, data->isoc_rx_ep->bInterval);
 851
 852         urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
 853
 854         __fill_isoc_descriptor(urb, size,
 855                                le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 856
 857         usb_anchor_urb(urb, &data->isoc_anchor);
 858
 859         err = usb_submit_urb(urb, mem_flags);
 860         if (err < 0) {
 861                 if (err != -EPERM && err != -ENODEV)
 862                         BT_ERR("%s urb %p submission failed (%d)",
 863                                hdev->name, urb, -err);
 864                 usb_unanchor_urb(urb);
 865         }
 866
 867         usb_free_urb(urb);
 868
 869         return err;
 870 }
 871
 872 static void btusb_tx_complete(struct urb *urb)
 873 {
 874         struct sk_buff *skb = urb->context;
 875         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
 876         struct btusb_data *data = hci_get_drvdata(hdev);
 877
 878         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 879                urb->actual_length);
 880
 881         if (!test_bit(HCI_RUNNING, &hdev->flags))
 882                 goto done;
 883
 884         if (!urb->status)
 885                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 886         else
 887                 hdev->stat.err_tx++;
 888
 889 done:
 890         spin_lock(&data->txlock);
 891         data->tx_in_flight--;
 892         spin_unlock(&data->txlock);
 893
 894         kfree(urb->setup_packet);
 895
 896         kfree_skb(skb);
 897 }
 898
 899 static void btusb_isoc_tx_complete(struct urb *urb)
 900 {
 901         struct sk_buff *skb = urb->context;
 902         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
 903
 904         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 905                urb->actual_length);
 906
 907         if (!test_bit(HCI_RUNNING, &hdev->flags))
 908                 goto done;
 909
 910         if (!urb->status)
 911                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 912         else
 913                 hdev->stat.err_tx++;
 914
 915 done:
 916         kfree(urb->setup_packet);
 917
 918         kfree_skb(skb);
 919 }
 920
 921 static int btusb_open(struct hci_dev *hdev)
 922 {
 923         struct btusb_data *data = hci_get_drvdata(hdev);
 924         int err;
 925
 926         BT_DBG("%s", hdev->name);
 927
 928         /* Patching USB firmware files prior to starting any URBs of HCI path
 929          * It is more safe to use USB bulk channel for downloading USB patch
 930          */
 931         if (data->setup_on_usb) {
 932                 err = data->setup_on_usb(hdev);
 933                 if (err < 0)
 934                         return err;
 935         }
 936
 937         err = usb_autopm_get_interface(data->intf);
 938         if (err < 0)
 939                 return err;
 940
 941         data->intf->needs_remote_wakeup = 1;
 942
 943         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 944                 goto done;
 945
 946         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 947                 goto done;
 948
 949         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 950         if (err < 0)
 951                 goto failed;
 952
 953         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 954         if (err < 0) {
 955                 usb_kill_anchored_urbs(&data->intr_anchor);
 956                 goto failed;
 957         }
 958
 959         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 960         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 961
 962 done:
 963         usb_autopm_put_interface(data->intf);
 964         return 0;
 965
 966 failed:
 967         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 968         clear_bit(HCI_RUNNING, &hdev->flags);
 969         usb_autopm_put_interface(data->intf);
 970         return err;
 971 }
 972
 973 static void btusb_stop_traffic(struct btusb_data *data)
 974 {
 975         usb_kill_anchored_urbs(&data->intr_anchor);
 976         usb_kill_anchored_urbs(&data->bulk_anchor);
 977         usb_kill_anchored_urbs(&data->isoc_anchor);
 978 }
 979
 980 static int btusb_close(struct hci_dev *hdev)
 981 {
 982         struct btusb_data *data = hci_get_drvdata(hdev);
 983         int err;
 984
 985         BT_DBG("%s", hdev->name);
 986
 987         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 988                 return 0;
 989
 990         cancel_work_sync(&data->work);
 991         cancel_work_sync(&data->waker);
 992
 993         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 994         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 995         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 996
 997         btusb_stop_traffic(data);
 998         btusb_free_frags(data);
 999
1000         err = usb_autopm_get_interface(data->intf);
1001         if (err < 0)
1002                 goto failed;
1003
1004         data->intf->needs_remote_wakeup = 0;
1005         usb_autopm_put_interface(data->intf);
1006
1007 failed:
1008         usb_scuttle_anchored_urbs(&data->deferred);
1009         return 0;
1010 }
1011
1012 static int btusb_flush(struct hci_dev *hdev)
1013 {
1014         struct btusb_data *data = hci_get_drvdata(hdev);
1015
1016         BT_DBG("%s", hdev->name);
1017
1018         usb_kill_anchored_urbs(&data->tx_anchor);
1019         btusb_free_frags(data);
1020
1021         return 0;
1022 }
1023
1024 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
1025 {
1026         struct btusb_data *data = hci_get_drvdata(hdev);
1027         struct usb_ctrlrequest *dr;
1028         struct urb *urb;
1029         unsigned int pipe;
1030
1031         urb = usb_alloc_urb(0, GFP_KERNEL);
1032         if (!urb)
1033                 return ERR_PTR(-ENOMEM);
1034
1035         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
1036         if (!dr) {
1037                 usb_free_urb(urb);
1038                 return ERR_PTR(-ENOMEM);
1039         }
1040
1041         dr->bRequestType = data->cmdreq_type;
1042         dr->bRequest     = data->cmdreq;
1043         dr->wIndex       = 0;
1044         dr->wValue       = 0;
1045         dr->wLength      = __cpu_to_le16(skb->len);
1046
1047         pipe = usb_sndctrlpipe(data->udev, 0x00);
1048
1049         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
1050                              skb->data, skb->len, btusb_tx_complete, skb);
1051
1052         skb->dev = (void *)hdev;
1053
1054         return urb;
1055 }
1056
1057 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
1058 {
1059         struct btusb_data *data = hci_get_drvdata(hdev);
1060         struct urb *urb;
1061         unsigned int pipe;
1062
1063         if (!data->bulk_tx_ep)
1064                 return ERR_PTR(-ENODEV);
1065
1066         urb = usb_alloc_urb(0, GFP_KERNEL);
1067         if (!urb)
1068                 return ERR_PTR(-ENOMEM);
1069
1070         pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1071
1072         usb_fill_bulk_urb(urb, data->udev, pipe,
1073                           skb->data, skb->len, btusb_tx_complete, skb);
1074
1075         skb->dev = (void *)hdev;
1076
1077         return urb;
1078 }
1079
1080 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1081 {
1082         struct btusb_data *data = hci_get_drvdata(hdev);
1083         struct urb *urb;
1084         unsigned int pipe;
1085
1086         if (!data->isoc_tx_ep)
1087                 return ERR_PTR(-ENODEV);
1088
1089         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1090         if (!urb)
1091                 return ERR_PTR(-ENOMEM);
1092
1093         pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1094
1095         usb_fill_int_urb(urb, data->udev, pipe,
1096                          skb->data, skb->len, btusb_isoc_tx_complete,
1097                          skb, data->isoc_tx_ep->bInterval);
1098
1099         urb->transfer_flags  = URB_ISO_ASAP;
1100
1101         __fill_isoc_descriptor(urb, skb->len,
1102                                le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1103
1104         skb->dev = (void *)hdev;
1105
1106         return urb;
1107 }
1108
1109 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1110 {
1111         struct btusb_data *data = hci_get_drvdata(hdev);
1112         int err;
1113
1114         usb_anchor_urb(urb, &data->tx_anchor);
1115
1116         err = usb_submit_urb(urb, GFP_KERNEL);
1117         if (err < 0) {
1118                 if (err != -EPERM && err != -ENODEV)
1119                         BT_ERR("%s urb %p submission failed (%d)",
1120                                hdev->name, urb, -err);
1121                 kfree(urb->setup_packet);
1122                 usb_unanchor_urb(urb);
1123         } else {
1124                 usb_mark_last_busy(data->udev);
1125         }
1126
1127         usb_free_urb(urb);
1128         return err;
1129 }
1130
1131 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1132 {
1133         struct btusb_data *data = hci_get_drvdata(hdev);
1134         unsigned long flags;
1135         bool suspending;
1136
1137         spin_lock_irqsave(&data->txlock, flags);
1138         suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1139         if (!suspending)
1140                 data->tx_in_flight++;
1141         spin_unlock_irqrestore(&data->txlock, flags);
1142
1143         if (!suspending)
1144                 return submit_tx_urb(hdev, urb);
1145
1146         usb_anchor_urb(urb, &data->deferred);
1147         schedule_work(&data->waker);
1148
1149         usb_free_urb(urb);
1150         return 0;
1151 }
1152
1153 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1154 {
1155         struct urb *urb;
1156
1157         BT_DBG("%s", hdev->name);
1158
1159         if (!test_bit(HCI_RUNNING, &hdev->flags))
1160                 return -EBUSY;
1161
1162         switch (bt_cb(skb)->pkt_type) {
1163         case HCI_COMMAND_PKT:
1164                 urb = alloc_ctrl_urb(hdev, skb);
1165                 if (IS_ERR(urb))
1166                         return PTR_ERR(urb);
1167
1168                 hdev->stat.cmd_tx++;
1169                 return submit_or_queue_tx_urb(hdev, urb);
1170
1171         case HCI_ACLDATA_PKT:
1172                 urb = alloc_bulk_urb(hdev, skb);
1173                 if (IS_ERR(urb))
1174                         return PTR_ERR(urb);
1175
1176                 hdev->stat.acl_tx++;
1177                 return submit_or_queue_tx_urb(hdev, urb);
1178
1179         case HCI_SCODATA_PKT:
1180                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1181                         return -ENODEV;
1182
1183                 urb = alloc_isoc_urb(hdev, skb);
1184                 if (IS_ERR(urb))
1185                         return PTR_ERR(urb);
1186
1187                 hdev->stat.sco_tx++;
1188                 return submit_tx_urb(hdev, urb);
1189         }
1190
1191         return -EILSEQ;
1192 }
1193
1194 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1195 {
1196         struct btusb_data *data = hci_get_drvdata(hdev);
1197
1198         BT_DBG("%s evt %d", hdev->name, evt);
1199
1200         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1201                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1202                 schedule_work(&data->work);
1203         }
1204 }
1205
1206 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1207 {
1208         struct btusb_data *data = hci_get_drvdata(hdev);
1209         struct usb_interface *intf = data->isoc;
1210         struct usb_endpoint_descriptor *ep_desc;
1211         int i, err;
1212
1213         if (!data->isoc)
1214                 return -ENODEV;
1215
1216         err = usb_set_interface(data->udev, 1, altsetting);
1217         if (err < 0) {
1218                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
1219                 return err;
1220         }
1221
1222         data->isoc_altsetting = altsetting;
1223
1224         data->isoc_tx_ep = NULL;
1225         data->isoc_rx_ep = NULL;
1226
1227         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1228                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1229
1230                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1231                         data->isoc_tx_ep = ep_desc;
1232                         continue;
1233                 }
1234
1235                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1236                         data->isoc_rx_ep = ep_desc;
1237                         continue;
1238                 }
1239         }
1240
1241         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1242                 BT_ERR("%s invalid SCO descriptors", hdev->name);
1243                 return -ENODEV;
1244         }
1245
1246         return 0;
1247 }
1248
1249 static void btusb_work(struct work_struct *work)
1250 {
1251         struct btusb_data *data = container_of(work, struct btusb_data, work);
1252         struct hci_dev *hdev = data->hdev;
1253         int new_alts;
1254         int err;
1255
1256         if (data->sco_num > 0) {
1257                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1258                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1259                         if (err < 0) {
1260                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1261                                 usb_kill_anchored_urbs(&data->isoc_anchor);
1262                                 return;
1263                         }
1264
1265                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1266                 }
1267
1268                 if (hdev->voice_setting & 0x0020) {
1269                         static const int alts[3] = { 2, 4, 5 };
1270
1271                         new_alts = alts[data->sco_num - 1];
1272                 } else {
1273                         new_alts = data->sco_num;
1274                 }
1275
1276                 if (data->isoc_altsetting != new_alts) {
1277                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1278                         usb_kill_anchored_urbs(&data->isoc_anchor);
1279
1280                         if (__set_isoc_interface(hdev, new_alts) < 0)
1281                                 return;
1282                 }
1283
1284                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1285                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1286                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1287                         else
1288                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1289                 }
1290         } else {
1291                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1292                 usb_kill_anchored_urbs(&data->isoc_anchor);
1293
1294                 __set_isoc_interface(hdev, 0);
1295                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1296                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1297         }
1298 }
1299
1300 static void btusb_waker(struct work_struct *work)
1301 {
1302         struct btusb_data *data = container_of(work, struct btusb_data, waker);
1303         int err;
1304
1305         err = usb_autopm_get_interface(data->intf);
1306         if (err < 0)
1307                 return;
1308
1309         usb_autopm_put_interface(data->intf);
1310 }
1311
1312 static int btusb_setup_bcm92035(struct hci_dev *hdev)
1313 {
1314         struct sk_buff *skb;
1315         u8 val = 0x00;
1316
1317         BT_DBG("%s", hdev->name);
1318
1319         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1320         if (IS_ERR(skb))
1321                 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
1322         else
1323                 kfree_skb(skb);
1324
1325         return 0;
1326 }
1327
1328 static int btusb_setup_csr(struct hci_dev *hdev)
1329 {
1330         struct hci_rp_read_local_version *rp;
1331         struct sk_buff *skb;
1332
1333         BT_DBG("%s", hdev->name);
1334
1335         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1336                              HCI_INIT_TIMEOUT);
1337         if (IS_ERR(skb)) {
1338                 int err = PTR_ERR(skb);
1339                 BT_ERR("%s: CSR: Local version failed (%d)", hdev->name, err);
1340                 return err;
1341         }
1342
1343         if (skb->len != sizeof(struct hci_rp_read_local_version)) {
1344                 BT_ERR("%s: CSR: Local version length mismatch", hdev->name);
1345                 kfree_skb(skb);
1346                 return -EIO;
1347         }
1348
1349         rp = (struct hci_rp_read_local_version *)skb->data;
1350
1351         if (le16_to_cpu(rp->manufacturer) != 10) {
1352                 /* Clear the reset quirk since this is not an actual
1353                  * early Bluetooth 1.1 device from CSR.
1354                  */
1355                 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1356
1357                 /* These fake CSR controllers have all a broken
1358                  * stored link key handling and so just disable it.
1359                  */
1360                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
1361         }
1362
1363         kfree_skb(skb);
1364
1365         return 0;
1366 }
1367
1368 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1369                                                        struct intel_version *ver)
1370 {
1371         const struct firmware *fw;
1372         char fwname[64];
1373         int ret;
1374
1375         snprintf(fwname, sizeof(fwname),
1376                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1377                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
1378                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1379                  ver->fw_build_ww, ver->fw_build_yy);
1380
1381         ret = request_firmware(&fw, fwname, &hdev->dev);
1382         if (ret < 0) {
1383                 if (ret == -EINVAL) {
1384                         BT_ERR("%s Intel firmware file request failed (%d)",
1385                                hdev->name, ret);
1386                         return NULL;
1387                 }
1388
1389                 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1390                        hdev->name, fwname, ret);
1391
1392                 /* If the correct firmware patch file is not found, use the
1393                  * default firmware patch file instead
1394                  */
1395                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1396                          ver->hw_platform, ver->hw_variant);
1397                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1398                         BT_ERR("%s failed to open default Intel fw file: %s",
1399                                hdev->name, fwname);
1400                         return NULL;
1401                 }
1402         }
1403
1404         BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1405
1406         return fw;
1407 }
1408
1409 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1410                                       const struct firmware *fw,
1411                                       const u8 **fw_ptr, int *disable_patch)
1412 {
1413         struct sk_buff *skb;
1414         struct hci_command_hdr *cmd;
1415         const u8 *cmd_param;
1416         struct hci_event_hdr *evt = NULL;
1417         const u8 *evt_param = NULL;
1418         int remain = fw->size - (*fw_ptr - fw->data);
1419
1420         /* The first byte indicates the types of the patch command or event.
1421          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1422          * in the current firmware buffer doesn't start with 0x01 or
1423          * the size of remain buffer is smaller than HCI command header,
1424          * the firmware file is corrupted and it should stop the patching
1425          * process.
1426          */
1427         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1428                 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1429                 return -EINVAL;
1430         }
1431         (*fw_ptr)++;
1432         remain--;
1433
1434         cmd = (struct hci_command_hdr *)(*fw_ptr);
1435         *fw_ptr += sizeof(*cmd);
1436         remain -= sizeof(*cmd);
1437
1438         /* Ensure that the remain firmware data is long enough than the length
1439          * of command parameter. If not, the firmware file is corrupted.
1440          */
1441         if (remain < cmd->plen) {
1442                 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1443                 return -EFAULT;
1444         }
1445
1446         /* If there is a command that loads a patch in the firmware
1447          * file, then enable the patch upon success, otherwise just
1448          * disable the manufacturer mode, for example patch activation
1449          * is not required when the default firmware patch file is used
1450          * because there are no patch data to load.
1451          */
1452         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1453                 *disable_patch = 0;
1454
1455         cmd_param = *fw_ptr;
1456         *fw_ptr += cmd->plen;
1457         remain -= cmd->plen;
1458
1459         /* This reads the expected events when the above command is sent to the
1460          * device. Some vendor commands expects more than one events, for
1461          * example command status event followed by vendor specific event.
1462          * For this case, it only keeps the last expected event. so the command
1463          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1464          * last expected event.
1465          */
1466         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1467                 (*fw_ptr)++;
1468                 remain--;
1469
1470                 evt = (struct hci_event_hdr *)(*fw_ptr);
1471                 *fw_ptr += sizeof(*evt);
1472                 remain -= sizeof(*evt);
1473
1474                 if (remain < evt->plen) {
1475                         BT_ERR("%s Intel fw corrupted: invalid evt len",
1476                                hdev->name);
1477                         return -EFAULT;
1478                 }
1479
1480                 evt_param = *fw_ptr;
1481                 *fw_ptr += evt->plen;
1482                 remain -= evt->plen;
1483         }
1484
1485         /* Every HCI commands in the firmware file has its correspond event.
1486          * If event is not found or remain is smaller than zero, the firmware
1487          * file is corrupted.
1488          */
1489         if (!evt || !evt_param || remain < 0) {
1490                 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1491                 return -EFAULT;
1492         }
1493
1494         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1495                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1496         if (IS_ERR(skb)) {
1497                 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1498                        hdev->name, cmd->opcode, PTR_ERR(skb));
1499                 return PTR_ERR(skb);
1500         }
1501
1502         /* It ensures that the returned event matches the event data read from
1503          * the firmware file. At fist, it checks the length and then
1504          * the contents of the event.
1505          */
1506         if (skb->len != evt->plen) {
1507                 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1508                        le16_to_cpu(cmd->opcode));
1509                 kfree_skb(skb);
1510                 return -EFAULT;
1511         }
1512
1513         if (memcmp(skb->data, evt_param, evt->plen)) {
1514                 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1515                        hdev->name, le16_to_cpu(cmd->opcode));
1516                 kfree_skb(skb);
1517                 return -EFAULT;
1518         }
1519         kfree_skb(skb);
1520
1521         return 0;
1522 }
1523
1524 static int btusb_setup_intel(struct hci_dev *hdev)
1525 {
1526         struct sk_buff *skb;
1527         const struct firmware *fw;
1528         const u8 *fw_ptr;
1529         int disable_patch;
1530         struct intel_version *ver;
1531
1532         const u8 mfg_enable[] = { 0x01, 0x00 };
1533         const u8 mfg_disable[] = { 0x00, 0x00 };
1534         const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
1535         const u8 mfg_reset_activate[] = { 0x00, 0x02 };
1536
1537         BT_DBG("%s", hdev->name);
1538
1539         /* The controller has a bug with the first HCI command sent to it
1540          * returning number of completed commands as zero. This would stall the
1541          * command processing in the Bluetooth core.
1542          *
1543          * As a workaround, send HCI Reset command first which will reset the
1544          * number of completed commands and allow normal command processing
1545          * from now on.
1546          */
1547         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1548         if (IS_ERR(skb)) {
1549                 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1550                        hdev->name, PTR_ERR(skb));
1551                 return PTR_ERR(skb);
1552         }
1553         kfree_skb(skb);
1554
1555         /* Read Intel specific controller version first to allow selection of
1556          * which firmware file to load.
1557          *
1558          * The returned information are hardware variant and revision plus
1559          * firmware variant, revision and build number.
1560          */
1561         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1562         if (IS_ERR(skb)) {
1563                 BT_ERR("%s reading Intel fw version command failed (%ld)",
1564                        hdev->name, PTR_ERR(skb));
1565                 return PTR_ERR(skb);
1566         }
1567
1568         if (skb->len != sizeof(*ver)) {
1569                 BT_ERR("%s Intel version event length mismatch", hdev->name);
1570                 kfree_skb(skb);
1571                 return -EIO;
1572         }
1573
1574         ver = (struct intel_version *)skb->data;
1575
1576         BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1577                 hdev->name, ver->hw_platform, ver->hw_variant,
1578                 ver->hw_revision, ver->fw_variant,  ver->fw_revision,
1579                 ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
1580                 ver->fw_patch_num);
1581
1582         /* fw_patch_num indicates the version of patch the device currently
1583          * have. If there is no patch data in the device, it is always 0x00.
1584          * So, if it is other than 0x00, no need to patch the device again.
1585          */
1586         if (ver->fw_patch_num) {
1587                 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1588                         hdev->name, ver->fw_patch_num);
1589                 kfree_skb(skb);
1590                 btintel_check_bdaddr(hdev);
1591                 return 0;
1592         }
1593
1594         /* Opens the firmware patch file based on the firmware version read
1595          * from the controller. If it fails to open the matching firmware
1596          * patch file, it tries to open the default firmware patch file.
1597          * If no patch file is found, allow the device to operate without
1598          * a patch.
1599          */
1600         fw = btusb_setup_intel_get_fw(hdev, ver);
1601         if (!fw) {
1602                 kfree_skb(skb);
1603                 btintel_check_bdaddr(hdev);
1604                 return 0;
1605         }
1606         fw_ptr = fw->data;
1607
1608         kfree_skb(skb);
1609
1610         /* This Intel specific command enables the manufacturer mode of the
1611          * controller.
1612          *
1613          * Only while this mode is enabled, the driver can download the
1614          * firmware patch data and configuration parameters.
1615          */
1616         skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
1617         if (IS_ERR(skb)) {
1618                 BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
1619                        hdev->name, PTR_ERR(skb));
1620                 release_firmware(fw);
1621                 return PTR_ERR(skb);
1622         }
1623
1624         kfree_skb(skb);
1625
1626         disable_patch = 1;
1627
1628         /* The firmware data file consists of list of Intel specific HCI
1629          * commands and its expected events. The first byte indicates the
1630          * type of the message, either HCI command or HCI event.
1631          *
1632          * It reads the command and its expected event from the firmware file,
1633          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1634          * the returned event is compared with the event read from the firmware
1635          * file and it will continue until all the messages are downloaded to
1636          * the controller.
1637          *
1638          * Once the firmware patching is completed successfully,
1639          * the manufacturer mode is disabled with reset and activating the
1640          * downloaded patch.
1641          *
1642          * If the firmware patching fails, the manufacturer mode is
1643          * disabled with reset and deactivating the patch.
1644          *
1645          * If the default patch file is used, no reset is done when disabling
1646          * the manufacturer.
1647          */
1648         while (fw->size > fw_ptr - fw->data) {
1649                 int ret;
1650
1651                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1652                                                  &disable_patch);
1653                 if (ret < 0)
1654                         goto exit_mfg_deactivate;
1655         }
1656
1657         release_firmware(fw);
1658
1659         if (disable_patch)
1660                 goto exit_mfg_disable;
1661
1662         /* Patching completed successfully and disable the manufacturer mode
1663          * with reset and activate the downloaded firmware patches.
1664          */
1665         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
1666                              mfg_reset_activate, HCI_INIT_TIMEOUT);
1667         if (IS_ERR(skb)) {
1668                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1669                        hdev->name, PTR_ERR(skb));
1670                 return PTR_ERR(skb);
1671         }
1672         kfree_skb(skb);
1673
1674         BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1675                 hdev->name);
1676
1677         btintel_check_bdaddr(hdev);
1678         return 0;
1679
1680 exit_mfg_disable:
1681         /* Disable the manufacturer mode without reset */
1682         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
1683                              HCI_INIT_TIMEOUT);
1684         if (IS_ERR(skb)) {
1685                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1686                        hdev->name, PTR_ERR(skb));
1687                 return PTR_ERR(skb);
1688         }
1689         kfree_skb(skb);
1690
1691         BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1692
1693         btintel_check_bdaddr(hdev);
1694         return 0;
1695
1696 exit_mfg_deactivate:
1697         release_firmware(fw);
1698
1699         /* Patching failed. Disable the manufacturer mode with reset and
1700          * deactivate the downloaded firmware patches.
1701          */
1702         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
1703                              mfg_reset_deactivate, HCI_INIT_TIMEOUT);
1704         if (IS_ERR(skb)) {
1705                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1706                        hdev->name, PTR_ERR(skb));
1707                 return PTR_ERR(skb);
1708         }
1709         kfree_skb(skb);
1710
1711         BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1712                 hdev->name);
1713
1714         btintel_check_bdaddr(hdev);
1715         return 0;
1716 }
1717
1718 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
1719 {
1720         struct sk_buff *skb;
1721         struct hci_event_hdr *hdr;
1722         struct hci_ev_cmd_complete *evt;
1723
1724         skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_ATOMIC);
1725         if (!skb)
1726                 return -ENOMEM;
1727
1728         hdr = (struct hci_event_hdr *)skb_put(skb, sizeof(*hdr));
1729         hdr->evt = HCI_EV_CMD_COMPLETE;
1730         hdr->plen = sizeof(*evt) + 1;
1731
1732         evt = (struct hci_ev_cmd_complete *)skb_put(skb, sizeof(*evt));
1733         evt->ncmd = 0x01;
1734         evt->opcode = cpu_to_le16(opcode);
1735
1736         *skb_put(skb, 1) = 0x00;
1737
1738         bt_cb(skb)->pkt_type = HCI_EVENT_PKT;
1739
1740         return hci_recv_frame(hdev, skb);
1741 }
1742
1743 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
1744                                  int count)
1745 {
1746         /* When the device is in bootloader mode, then it can send
1747          * events via the bulk endpoint. These events are treated the
1748          * same way as the ones received from the interrupt endpoint.
1749          */
1750         if (test_bit(BTUSB_BOOTLOADER, &data->flags))
1751                 return btusb_recv_intr(data, buffer, count);
1752
1753         return btusb_recv_bulk(data, buffer, count);
1754 }
1755
1756 static void btusb_intel_bootup(struct btusb_data *data, const void *ptr,
1757                                unsigned int len)
1758 {
1759         const struct intel_bootup *evt = ptr;
1760
1761         if (len != sizeof(*evt))
1762                 return;
1763
1764         if (test_and_clear_bit(BTUSB_BOOTING, &data->flags)) {
1765                 smp_mb__after_atomic();
1766                 wake_up_bit(&data->flags, BTUSB_BOOTING);
1767         }
1768 }
1769
1770 static void btusb_intel_secure_send_result(struct btusb_data *data,
1771                                            const void *ptr, unsigned int len)
1772 {
1773         const struct intel_secure_send_result *evt = ptr;
1774
1775         if (len != sizeof(*evt))
1776                 return;
1777
1778         if (evt->result)
1779                 set_bit(BTUSB_FIRMWARE_FAILED, &data->flags);
1780
1781         if (test_and_clear_bit(BTUSB_DOWNLOADING, &data->flags) &&
1782             test_bit(BTUSB_FIRMWARE_LOADED, &data->flags)) {
1783                 smp_mb__after_atomic();
1784                 wake_up_bit(&data->flags, BTUSB_DOWNLOADING);
1785         }
1786 }
1787
1788 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
1789 {
1790         struct btusb_data *data = hci_get_drvdata(hdev);
1791
1792         if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1793                 struct hci_event_hdr *hdr = (void *)skb->data;
1794
1795                 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
1796                     hdr->plen > 0) {
1797                         const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
1798                         unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
1799
1800                         switch (skb->data[2]) {
1801                         case 0x02:
1802                                 /* When switching to the operational firmware
1803                                  * the device sends a vendor specific event
1804                                  * indicating that the bootup completed.
1805                                  */
1806                                 btusb_intel_bootup(data, ptr, len);
1807                                 break;
1808                         case 0x06:
1809                                 /* When the firmware loading completes the
1810                                  * device sends out a vendor specific event
1811                                  * indicating the result of the firmware
1812                                  * loading.
1813                                  */
1814                                 btusb_intel_secure_send_result(data, ptr, len);
1815                                 break;
1816                         }
1817                 }
1818         }
1819
1820         return hci_recv_frame(hdev, skb);
1821 }
1822
1823 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
1824 {
1825         struct btusb_data *data = hci_get_drvdata(hdev);
1826         struct urb *urb;
1827
1828         BT_DBG("%s", hdev->name);
1829
1830         if (!test_bit(HCI_RUNNING, &hdev->flags))
1831                 return -EBUSY;
1832
1833         switch (bt_cb(skb)->pkt_type) {
1834         case HCI_COMMAND_PKT:
1835                 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1836                         struct hci_command_hdr *cmd = (void *)skb->data;
1837                         __u16 opcode = le16_to_cpu(cmd->opcode);
1838
1839                         /* When in bootloader mode and the command 0xfc09
1840                          * is received, it needs to be send down the
1841                          * bulk endpoint. So allocate a bulk URB instead.
1842                          */
1843                         if (opcode == 0xfc09)
1844                                 urb = alloc_bulk_urb(hdev, skb);
1845                         else
1846                                 urb = alloc_ctrl_urb(hdev, skb);
1847
1848                         /* When the 0xfc01 command is issued to boot into
1849                          * the operational firmware, it will actually not
1850                          * send a command complete event. To keep the flow
1851                          * control working inject that event here.
1852                          */
1853                         if (opcode == 0xfc01)
1854                                 inject_cmd_complete(hdev, opcode);
1855                 } else {
1856                         urb = alloc_ctrl_urb(hdev, skb);
1857                 }
1858                 if (IS_ERR(urb))
1859                         return PTR_ERR(urb);
1860
1861                 hdev->stat.cmd_tx++;
1862                 return submit_or_queue_tx_urb(hdev, urb);
1863
1864         case HCI_ACLDATA_PKT:
1865                 urb = alloc_bulk_urb(hdev, skb);
1866                 if (IS_ERR(urb))
1867                         return PTR_ERR(urb);
1868
1869                 hdev->stat.acl_tx++;
1870                 return submit_or_queue_tx_urb(hdev, urb);
1871
1872         case HCI_SCODATA_PKT:
1873                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1874                         return -ENODEV;
1875
1876                 urb = alloc_isoc_urb(hdev, skb);
1877                 if (IS_ERR(urb))
1878                         return PTR_ERR(urb);
1879
1880                 hdev->stat.sco_tx++;
1881                 return submit_tx_urb(hdev, urb);
1882         }
1883
1884         return -EILSEQ;
1885 }
1886
1887 static int btusb_setup_intel_new(struct hci_dev *hdev)
1888 {
1889         static const u8 reset_param[] = { 0x00, 0x01, 0x00, 0x01,
1890                                           0x00, 0x08, 0x04, 0x00 };
1891         struct btusb_data *data = hci_get_drvdata(hdev);
1892         struct sk_buff *skb;
1893         struct intel_version *ver;
1894         struct intel_boot_params *params;
1895         const struct firmware *fw;
1896         const u8 *fw_ptr;
1897         u32 frag_len;
1898         char fwname[64];
1899         ktime_t calltime, delta, rettime;
1900         unsigned long long duration;
1901         int err;
1902
1903         BT_DBG("%s", hdev->name);
1904
1905         calltime = ktime_get();
1906
1907         /* Read the Intel version information to determine if the device
1908          * is in bootloader mode or if it already has operational firmware
1909          * loaded.
1910          */
1911         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1912         if (IS_ERR(skb)) {
1913                 BT_ERR("%s: Reading Intel version information failed (%ld)",
1914                        hdev->name, PTR_ERR(skb));
1915                 return PTR_ERR(skb);
1916         }
1917
1918         if (skb->len != sizeof(*ver)) {
1919                 BT_ERR("%s: Intel version event size mismatch", hdev->name);
1920                 kfree_skb(skb);
1921                 return -EILSEQ;
1922         }
1923
1924         ver = (struct intel_version *)skb->data;
1925
1926         /* The hardware platform number has a fixed value of 0x37 and
1927          * for now only accept this single value.
1928          */
1929         if (ver->hw_platform != 0x37) {
1930                 BT_ERR("%s: Unsupported Intel hardware platform (%u)",
1931                        hdev->name, ver->hw_platform);
1932                 kfree_skb(skb);
1933                 return -EINVAL;
1934         }
1935
1936         /* At the moment only the hardware variant iBT 3.0 (LnP/SfP) is
1937          * supported by this firmware loading method. This check has been
1938          * put in place to ensure correct forward compatibility options
1939          * when newer hardware variants come along.
1940          */
1941         if (ver->hw_variant != 0x0b) {
1942                 BT_ERR("%s: Unsupported Intel hardware variant (%u)",
1943                        hdev->name, ver->hw_variant);
1944                 kfree_skb(skb);
1945                 return -EINVAL;
1946         }
1947
1948         btintel_version_info(hdev, ver);
1949
1950         /* The firmware variant determines if the device is in bootloader
1951          * mode or is running operational firmware. The value 0x06 identifies
1952          * the bootloader and the value 0x23 identifies the operational
1953          * firmware.
1954          *
1955          * When the operational firmware is already present, then only
1956          * the check for valid Bluetooth device address is needed. This
1957          * determines if the device will be added as configured or
1958          * unconfigured controller.
1959          *
1960          * It is not possible to use the Secure Boot Parameters in this
1961          * case since that command is only available in bootloader mode.
1962          */
1963         if (ver->fw_variant == 0x23) {
1964                 kfree_skb(skb);
1965                 clear_bit(BTUSB_BOOTLOADER, &data->flags);
1966                 btintel_check_bdaddr(hdev);
1967                 return 0;
1968         }
1969
1970         /* If the device is not in bootloader mode, then the only possible
1971          * choice is to return an error and abort the device initialization.
1972          */
1973         if (ver->fw_variant != 0x06) {
1974                 BT_ERR("%s: Unsupported Intel firmware variant (%u)",
1975                        hdev->name, ver->fw_variant);
1976                 kfree_skb(skb);
1977                 return -ENODEV;
1978         }
1979
1980         kfree_skb(skb);
1981
1982         /* Read the secure boot parameters to identify the operating
1983          * details of the bootloader.
1984          */
1985         skb = __hci_cmd_sync(hdev, 0xfc0d, 0, NULL, HCI_INIT_TIMEOUT);
1986         if (IS_ERR(skb)) {
1987                 BT_ERR("%s: Reading Intel boot parameters failed (%ld)",
1988                        hdev->name, PTR_ERR(skb));
1989                 return PTR_ERR(skb);
1990         }
1991
1992         if (skb->len != sizeof(*params)) {
1993                 BT_ERR("%s: Intel boot parameters size mismatch", hdev->name);
1994                 kfree_skb(skb);
1995                 return -EILSEQ;
1996         }
1997
1998         params = (struct intel_boot_params *)skb->data;
1999
2000         BT_INFO("%s: Device revision is %u", hdev->name,
2001                 le16_to_cpu(params->dev_revid));
2002
2003         BT_INFO("%s: Secure boot is %s", hdev->name,
2004                 params->secure_boot ? "enabled" : "disabled");
2005
2006         BT_INFO("%s: Minimum firmware build %u week %u %u", hdev->name,
2007                 params->min_fw_build_nn, params->min_fw_build_cw,
2008                 2000 + params->min_fw_build_yy);
2009
2010         /* It is required that every single firmware fragment is acknowledged
2011          * with a command complete event. If the boot parameters indicate
2012          * that this bootloader does not send them, then abort the setup.
2013          */
2014         if (params->limited_cce != 0x00) {
2015                 BT_ERR("%s: Unsupported Intel firmware loading method (%u)",
2016                        hdev->name, params->limited_cce);
2017                 kfree_skb(skb);
2018                 return -EINVAL;
2019         }
2020
2021         /* If the OTP has no valid Bluetooth device address, then there will
2022          * also be no valid address for the operational firmware.
2023          */
2024         if (!bacmp(&params->otp_bdaddr, BDADDR_ANY)) {
2025                 BT_INFO("%s: No device address configured", hdev->name);
2026                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2027         }
2028
2029         /* With this Intel bootloader only the hardware variant and device
2030          * revision information are used to select the right firmware.
2031          *
2032          * Currently this bootloader support is limited to hardware variant
2033          * iBT 3.0 (LnP/SfP) which is identified by the value 11 (0x0b).
2034          */
2035         snprintf(fwname, sizeof(fwname), "intel/ibt-11-%u.sfi",
2036                  le16_to_cpu(params->dev_revid));
2037
2038         err = request_firmware(&fw, fwname, &hdev->dev);
2039         if (err < 0) {
2040                 BT_ERR("%s: Failed to load Intel firmware file (%d)",
2041                        hdev->name, err);
2042                 kfree_skb(skb);
2043                 return err;
2044         }
2045
2046         BT_INFO("%s: Found device firmware: %s", hdev->name, fwname);
2047
2048         /* Save the DDC file name for later use to apply once the firmware
2049          * downloading is done.
2050          */
2051         snprintf(fwname, sizeof(fwname), "intel/ibt-11-%u.ddc",
2052                  le16_to_cpu(params->dev_revid));
2053
2054         kfree_skb(skb);
2055
2056         if (fw->size < 644) {
2057                 BT_ERR("%s: Invalid size of firmware file (%zu)",
2058                        hdev->name, fw->size);
2059                 err = -EBADF;
2060                 goto done;
2061         }
2062
2063         set_bit(BTUSB_DOWNLOADING, &data->flags);
2064
2065         /* Start the firmware download transaction with the Init fragment
2066          * represented by the 128 bytes of CSS header.
2067          */
2068         err = btintel_secure_send(hdev, 0x00, 128, fw->data);
2069         if (err < 0) {
2070                 BT_ERR("%s: Failed to send firmware header (%d)",
2071                        hdev->name, err);
2072                 goto done;
2073         }
2074
2075         /* Send the 256 bytes of public key information from the firmware
2076          * as the PKey fragment.
2077          */
2078         err = btintel_secure_send(hdev, 0x03, 256, fw->data + 128);
2079         if (err < 0) {
2080                 BT_ERR("%s: Failed to send firmware public key (%d)",
2081                        hdev->name, err);
2082                 goto done;
2083         }
2084
2085         /* Send the 256 bytes of signature information from the firmware
2086          * as the Sign fragment.
2087          */
2088         err = btintel_secure_send(hdev, 0x02, 256, fw->data + 388);
2089         if (err < 0) {
2090                 BT_ERR("%s: Failed to send firmware signature (%d)",
2091                        hdev->name, err);
2092                 goto done;
2093         }
2094
2095         fw_ptr = fw->data + 644;
2096         frag_len = 0;
2097
2098         while (fw_ptr - fw->data < fw->size) {
2099                 struct hci_command_hdr *cmd = (void *)(fw_ptr + frag_len);
2100
2101                 frag_len += sizeof(*cmd) + cmd->plen;
2102
2103                 /* The parameter length of the secure send command requires
2104                  * a 4 byte alignment. It happens so that the firmware file
2105                  * contains proper Intel_NOP commands to align the fragments
2106                  * as needed.
2107                  *
2108                  * Send set of commands with 4 byte alignment from the
2109                  * firmware data buffer as a single Data fragement.
2110                  */
2111                 if (!(frag_len % 4)) {
2112                         err = btintel_secure_send(hdev, 0x01, frag_len, fw_ptr);
2113                         if (err < 0) {
2114                                 BT_ERR("%s: Failed to send firmware data (%d)",
2115                                        hdev->name, err);
2116                                 goto done;
2117                         }
2118
2119                         fw_ptr += frag_len;
2120                         frag_len = 0;
2121                 }
2122         }
2123
2124         set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2125
2126         BT_INFO("%s: Waiting for firmware download to complete", hdev->name);
2127
2128         /* Before switching the device into operational mode and with that
2129          * booting the loaded firmware, wait for the bootloader notification
2130          * that all fragments have been successfully received.
2131          *
2132          * When the event processing receives the notification, then the
2133          * BTUSB_DOWNLOADING flag will be cleared.
2134          *
2135          * The firmware loading should not take longer than 5 seconds
2136          * and thus just timeout if that happens and fail the setup
2137          * of this device.
2138          */
2139         err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
2140                                   TASK_INTERRUPTIBLE,
2141                                   msecs_to_jiffies(5000));
2142         if (err == 1) {
2143                 BT_ERR("%s: Firmware loading interrupted", hdev->name);
2144                 err = -EINTR;
2145                 goto done;
2146         }
2147
2148         if (err) {
2149                 BT_ERR("%s: Firmware loading timeout", hdev->name);
2150                 err = -ETIMEDOUT;
2151                 goto done;
2152         }
2153
2154         if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) {
2155                 BT_ERR("%s: Firmware loading failed", hdev->name);
2156                 err = -ENOEXEC;
2157                 goto done;
2158         }
2159
2160         rettime = ktime_get();
2161         delta = ktime_sub(rettime, calltime);
2162         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2163
2164         BT_INFO("%s: Firmware loaded in %llu usecs", hdev->name, duration);
2165
2166 done:
2167         release_firmware(fw);
2168
2169         if (err < 0)
2170                 return err;
2171
2172         calltime = ktime_get();
2173
2174         set_bit(BTUSB_BOOTING, &data->flags);
2175
2176         skb = __hci_cmd_sync(hdev, 0xfc01, sizeof(reset_param), reset_param,
2177                              HCI_INIT_TIMEOUT);
2178         if (IS_ERR(skb))
2179                 return PTR_ERR(skb);
2180
2181         kfree_skb(skb);
2182
2183         /* The bootloader will not indicate when the device is ready. This
2184          * is done by the operational firmware sending bootup notification.
2185          *
2186          * Booting into operational firmware should not take longer than
2187          * 1 second. However if that happens, then just fail the setup
2188          * since something went wrong.
2189          */
2190         BT_INFO("%s: Waiting for device to boot", hdev->name);
2191
2192         err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING,
2193                                   TASK_INTERRUPTIBLE,
2194                                   msecs_to_jiffies(1000));
2195
2196         if (err == 1) {
2197                 BT_ERR("%s: Device boot interrupted", hdev->name);
2198                 return -EINTR;
2199         }
2200
2201         if (err) {
2202                 BT_ERR("%s: Device boot timeout", hdev->name);
2203                 return -ETIMEDOUT;
2204         }
2205
2206         rettime = ktime_get();
2207         delta = ktime_sub(rettime, calltime);
2208         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2209
2210         BT_INFO("%s: Device booted in %llu usecs", hdev->name, duration);
2211
2212         clear_bit(BTUSB_BOOTLOADER, &data->flags);
2213
2214         /* Once the device is running in operational mode, it needs to apply
2215          * the device configuration (DDC) parameters.
2216          *
2217          * The device can work without DDC parameters, so even if it fails
2218          * to load the file, no need to fail the setup.
2219          */
2220         err = request_firmware_direct(&fw, fwname, &hdev->dev);
2221         if (err < 0)
2222                 return 0;
2223
2224         BT_INFO("%s: Found Intel DDC parameters: %s", hdev->name, fwname);
2225
2226         fw_ptr = fw->data;
2227
2228         /* DDC file contains one or more DDC structure which has
2229          * Length (1 byte), DDC ID (2 bytes), and DDC value (Length - 2).
2230          */
2231         while (fw->size > fw_ptr - fw->data) {
2232                 u8 cmd_plen = fw_ptr[0] + sizeof(u8);
2233
2234                 skb = __hci_cmd_sync(hdev, 0xfc8b, cmd_plen, fw_ptr,
2235                                      HCI_INIT_TIMEOUT);
2236                 if (IS_ERR(skb)) {
2237                         BT_ERR("%s: Failed to send Intel_Write_DDC (%ld)",
2238                                hdev->name, PTR_ERR(skb));
2239                         release_firmware(fw);
2240                         return PTR_ERR(skb);
2241                 }
2242
2243                 fw_ptr += cmd_plen;
2244                 kfree_skb(skb);
2245         }
2246
2247         release_firmware(fw);
2248
2249         BT_INFO("%s: Applying Intel DDC parameters completed", hdev->name);
2250
2251         return 0;
2252 }
2253
2254 static int btusb_shutdown_intel(struct hci_dev *hdev)
2255 {
2256         struct sk_buff *skb;
2257         long ret;
2258
2259         /* Some platforms have an issue with BT LED when the interface is
2260          * down or BT radio is turned off, which takes 5 seconds to BT LED
2261          * goes off. This command turns off the BT LED immediately.
2262          */
2263         skb = __hci_cmd_sync(hdev, 0xfc3f, 0, NULL, HCI_INIT_TIMEOUT);
2264         if (IS_ERR(skb)) {
2265                 ret = PTR_ERR(skb);
2266                 BT_ERR("%s: turning off Intel device LED failed (%ld)",
2267                        hdev->name, ret);
2268                 return ret;
2269         }
2270         kfree_skb(skb);
2271
2272         return 0;
2273 }
2274
2275 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
2276                                     const bdaddr_t *bdaddr)
2277 {
2278         struct sk_buff *skb;
2279         u8 buf[8];
2280         long ret;
2281
2282         buf[0] = 0xfe;
2283         buf[1] = sizeof(bdaddr_t);
2284         memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
2285
2286         skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2287         if (IS_ERR(skb)) {
2288                 ret = PTR_ERR(skb);
2289                 BT_ERR("%s: changing Marvell device address failed (%ld)",
2290                        hdev->name, ret);
2291                 return ret;
2292         }
2293         kfree_skb(skb);
2294
2295         return 0;
2296 }
2297
2298 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
2299                                     const bdaddr_t *bdaddr)
2300 {
2301         struct sk_buff *skb;
2302         u8 buf[10];
2303         long ret;
2304
2305         buf[0] = 0x01;
2306         buf[1] = 0x01;
2307         buf[2] = 0x00;
2308         buf[3] = sizeof(bdaddr_t);
2309         memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
2310
2311         skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2312         if (IS_ERR(skb)) {
2313                 ret = PTR_ERR(skb);
2314                 BT_ERR("%s: Change address command failed (%ld)",
2315                        hdev->name, ret);
2316                 return ret;
2317         }
2318         kfree_skb(skb);
2319
2320         return 0;
2321 }
2322
2323 #define QCA_DFU_PACKET_LEN      4096
2324
2325 #define QCA_GET_TARGET_VERSION  0x09
2326 #define QCA_CHECK_STATUS        0x05
2327 #define QCA_DFU_DOWNLOAD        0x01
2328
2329 #define QCA_SYSCFG_UPDATED      0x40
2330 #define QCA_PATCH_UPDATED       0x80
2331 #define QCA_DFU_TIMEOUT         3000
2332
2333 struct qca_version {
2334         __le32  rom_version;
2335         __le32  patch_version;
2336         __le32  ram_version;
2337         __le32  ref_clock;
2338         __u8    reserved[4];
2339 } __packed;
2340
2341 struct qca_rampatch_version {
2342         __le16  rom_version;
2343         __le16  patch_version;
2344 } __packed;
2345
2346 struct qca_device_info {
2347         u32     rom_version;
2348         u8      rampatch_hdr;   /* length of header in rampatch */
2349         u8      nvm_hdr;        /* length of header in NVM */
2350         u8      ver_offset;     /* offset of version structure in rampatch */
2351 };
2352
2353 static const struct qca_device_info qca_devices_table[] = {
2354         { 0x00000100, 20, 4, 10 }, /* Rome 1.0 */
2355         { 0x00000101, 20, 4, 10 }, /* Rome 1.1 */
2356         { 0x00000200, 28, 4, 18 }, /* Rome 2.0 */
2357         { 0x00000201, 28, 4, 18 }, /* Rome 2.1 */
2358         { 0x00000300, 28, 4, 18 }, /* Rome 3.0 */
2359         { 0x00000302, 28, 4, 18 }, /* Rome 3.2 */
2360 };
2361
2362 static int btusb_qca_send_vendor_req(struct hci_dev *hdev, u8 request,
2363                                      void *data, u16 size)
2364 {
2365         struct btusb_data *btdata = hci_get_drvdata(hdev);
2366         struct usb_device *udev = btdata->udev;
2367         int pipe, err;
2368         u8 *buf;
2369
2370         buf = kmalloc(size, GFP_KERNEL);
2371         if (!buf)
2372                 return -ENOMEM;
2373
2374         /* Found some of USB hosts have IOT issues with ours so that we should
2375          * not wait until HCI layer is ready.
2376          */
2377         pipe = usb_rcvctrlpipe(udev, 0);
2378         err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
2379                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2380         if (err < 0) {
2381                 BT_ERR("%s: Failed to access otp area (%d)", hdev->name, err);
2382                 goto done;
2383         }
2384
2385         memcpy(data, buf, size);
2386
2387 done:
2388         kfree(buf);
2389
2390         return err;
2391 }
2392
2393 static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
2394                                        const struct firmware *firmware,
2395                                        size_t hdr_size)
2396 {
2397         struct btusb_data *btdata = hci_get_drvdata(hdev);
2398         struct usb_device *udev = btdata->udev;
2399         size_t count, size, sent = 0;
2400         int pipe, len, err;
2401         u8 *buf;
2402
2403         buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
2404         if (!buf)
2405                 return -ENOMEM;
2406
2407         count = firmware->size;
2408
2409         size = min_t(size_t, count, hdr_size);
2410         memcpy(buf, firmware->data, size);
2411
2412         /* USB patches should go down to controller through USB path
2413          * because binary format fits to go down through USB channel.
2414          * USB control path is for patching headers and USB bulk is for
2415          * patch body.
2416          */
2417         pipe = usb_sndctrlpipe(udev, 0);
2418         err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
2419                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2420         if (err < 0) {
2421                 BT_ERR("%s: Failed to send headers (%d)", hdev->name, err);
2422                 goto done;
2423         }
2424
2425         sent += size;
2426         count -= size;
2427
2428         while (count) {
2429                 size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
2430
2431                 memcpy(buf, firmware->data + sent, size);
2432
2433                 pipe = usb_sndbulkpipe(udev, 0x02);
2434                 err = usb_bulk_msg(udev, pipe, buf, size, &len,
2435                                    QCA_DFU_TIMEOUT);
2436                 if (err < 0) {
2437                         BT_ERR("%s: Failed to send body at %zd of %zd (%d)",
2438                                hdev->name, sent, firmware->size, err);
2439                         break;
2440                 }
2441
2442                 if (size != len) {
2443                         BT_ERR("%s: Failed to get bulk buffer", hdev->name);
2444                         err = -EILSEQ;
2445                         break;
2446                 }
2447
2448                 sent  += size;
2449                 count -= size;
2450         }
2451
2452 done:
2453         kfree(buf);
2454         return err;
2455 }
2456
2457 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
2458                                          struct qca_version *ver,
2459                                          const struct qca_device_info *info)
2460 {
2461         struct qca_rampatch_version *rver;
2462         const struct firmware *fw;
2463         u32 ver_rom, ver_patch;
2464         u16 rver_rom, rver_patch;
2465         char fwname[64];
2466         int err;
2467
2468         ver_rom = le32_to_cpu(ver->rom_version);
2469         ver_patch = le32_to_cpu(ver->patch_version);
2470
2471         snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom);
2472
2473         err = request_firmware(&fw, fwname, &hdev->dev);
2474         if (err) {
2475                 BT_ERR("%s: failed to request rampatch file: %s (%d)",
2476                        hdev->name, fwname, err);
2477                 return err;
2478         }
2479
2480         BT_INFO("%s: using rampatch file: %s", hdev->name, fwname);
2481
2482         rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
2483         rver_rom = le16_to_cpu(rver->rom_version);
2484         rver_patch = le16_to_cpu(rver->patch_version);
2485
2486         BT_INFO("%s: QCA: patch rome 0x%x build 0x%x, firmware rome 0x%x "
2487                 "build 0x%x", hdev->name, rver_rom, rver_patch, ver_rom,
2488                 ver_patch);
2489
2490         if (rver_rom != ver_rom || rver_patch <= ver_patch) {
2491                 BT_ERR("%s: rampatch file version did not match with firmware",
2492                        hdev->name);
2493                 err = -EINVAL;
2494                 goto done;
2495         }
2496
2497         err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
2498
2499 done:
2500         release_firmware(fw);
2501
2502         return err;
2503 }
2504
2505 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
2506                                     struct qca_version *ver,
2507                                     const struct qca_device_info *info)
2508 {
2509         const struct firmware *fw;
2510         char fwname[64];
2511         int err;
2512
2513         snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x.bin",
2514                  le32_to_cpu(ver->rom_version));
2515
2516         err = request_firmware(&fw, fwname, &hdev->dev);
2517         if (err) {
2518                 BT_ERR("%s: failed to request NVM file: %s (%d)",
2519                        hdev->name, fwname, err);
2520                 return err;
2521         }
2522
2523         BT_INFO("%s: using NVM file: %s", hdev->name, fwname);
2524
2525         err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
2526
2527         release_firmware(fw);
2528
2529         return err;
2530 }
2531
2532 static int btusb_setup_qca(struct hci_dev *hdev)
2533 {
2534         const struct qca_device_info *info = NULL;
2535         struct qca_version ver;
2536         u32 ver_rom;
2537         u8 status;
2538         int i, err;
2539
2540         err = btusb_qca_send_vendor_req(hdev, QCA_GET_TARGET_VERSION, &ver,
2541                                         sizeof(ver));
2542         if (err < 0)
2543                 return err;
2544
2545         ver_rom = le32_to_cpu(ver.rom_version);
2546         for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
2547                 if (ver_rom == qca_devices_table[i].rom_version)
2548                         info = &qca_devices_table[i];
2549         }
2550         if (!info) {
2551                 BT_ERR("%s: don't support firmware rome 0x%x", hdev->name,
2552                        ver_rom);
2553                 return -ENODEV;
2554         }
2555
2556         err = btusb_qca_send_vendor_req(hdev, QCA_CHECK_STATUS, &status,
2557                                         sizeof(status));
2558         if (err < 0)
2559                 return err;
2560
2561         if (!(status & QCA_PATCH_UPDATED)) {
2562                 err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
2563                 if (err < 0)
2564                         return err;
2565         }
2566
2567         if (!(status & QCA_SYSCFG_UPDATED)) {
2568                 err = btusb_setup_qca_load_nvm(hdev, &ver, info);
2569                 if (err < 0)
2570                         return err;
2571         }
2572
2573         return 0;
2574 }
2575
2576 static int btusb_probe(struct usb_interface *intf,
2577                        const struct usb_device_id *id)
2578 {
2579         struct usb_endpoint_descriptor *ep_desc;
2580         struct btusb_data *data;
2581         struct hci_dev *hdev;
2582         int i, err;
2583
2584         BT_DBG("intf %p id %p", intf, id);
2585
2586         /* interface numbers are hardcoded in the spec */
2587         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
2588                 return -ENODEV;
2589
2590         if (!id->driver_info) {
2591                 const struct usb_device_id *match;
2592
2593                 match = usb_match_id(intf, blacklist_table);
2594                 if (match)
2595                         id = match;
2596         }
2597
2598         if (id->driver_info == BTUSB_IGNORE)
2599                 return -ENODEV;
2600
2601         if (id->driver_info & BTUSB_ATH3012) {
2602                 struct usb_device *udev = interface_to_usbdev(intf);
2603
2604                 /* Old firmware would otherwise let ath3k driver load
2605                  * patch and sysconfig files */
2606                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
2607                         return -ENODEV;
2608         }
2609
2610         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
2611         if (!data)
2612                 return -ENOMEM;
2613
2614         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2615                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2616
2617                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
2618                         data->intr_ep = ep_desc;
2619                         continue;
2620                 }
2621
2622                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
2623                         data->bulk_tx_ep = ep_desc;
2624                         continue;
2625                 }
2626
2627                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
2628                         data->bulk_rx_ep = ep_desc;
2629                         continue;
2630                 }
2631         }
2632
2633         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
2634                 return -ENODEV;
2635
2636         if (id->driver_info & BTUSB_AMP) {
2637                 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
2638                 data->cmdreq = 0x2b;
2639         } else {
2640                 data->cmdreq_type = USB_TYPE_CLASS;
2641                 data->cmdreq = 0x00;
2642         }
2643
2644         data->udev = interface_to_usbdev(intf);
2645         data->intf = intf;
2646
2647         INIT_WORK(&data->work, btusb_work);
2648         INIT_WORK(&data->waker, btusb_waker);
2649         init_usb_anchor(&data->deferred);
2650         init_usb_anchor(&data->tx_anchor);
2651         spin_lock_init(&data->txlock);
2652
2653         init_usb_anchor(&data->intr_anchor);
2654         init_usb_anchor(&data->bulk_anchor);
2655         init_usb_anchor(&data->isoc_anchor);
2656         spin_lock_init(&data->rxlock);
2657
2658         if (id->driver_info & BTUSB_INTEL_NEW) {
2659                 data->recv_event = btusb_recv_event_intel;
2660                 data->recv_bulk = btusb_recv_bulk_intel;
2661                 set_bit(BTUSB_BOOTLOADER, &data->flags);
2662         } else {
2663                 data->recv_event = hci_recv_frame;
2664                 data->recv_bulk = btusb_recv_bulk;
2665         }
2666
2667         hdev = hci_alloc_dev();
2668         if (!hdev)
2669                 return -ENOMEM;
2670
2671         hdev->bus = HCI_USB;
2672         hci_set_drvdata(hdev, data);
2673
2674         if (id->driver_info & BTUSB_AMP)
2675                 hdev->dev_type = HCI_AMP;
2676         else
2677                 hdev->dev_type = HCI_BREDR;
2678
2679         data->hdev = hdev;
2680
2681         SET_HCIDEV_DEV(hdev, &intf->dev);
2682
2683         hdev->open   = btusb_open;
2684         hdev->close  = btusb_close;
2685         hdev->flush  = btusb_flush;
2686         hdev->send   = btusb_send_frame;
2687         hdev->notify = btusb_notify;
2688
2689         if (id->driver_info & BTUSB_BCM92035)
2690                 hdev->setup = btusb_setup_bcm92035;
2691
2692 #ifdef CONFIG_BT_HCIBTUSB_BCM
2693         if (id->driver_info & BTUSB_BCM_PATCHRAM) {
2694                 hdev->setup = btbcm_setup_patchram;
2695                 hdev->set_bdaddr = btbcm_set_bdaddr;
2696         }
2697
2698         if (id->driver_info & BTUSB_BCM_APPLE)
2699                 hdev->setup = btbcm_setup_apple;
2700 #endif
2701
2702         if (id->driver_info & BTUSB_INTEL) {
2703                 hdev->setup = btusb_setup_intel;
2704                 hdev->shutdown = btusb_shutdown_intel;
2705                 hdev->set_bdaddr = btintel_set_bdaddr;
2706                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2707                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
2708         }
2709
2710         if (id->driver_info & BTUSB_INTEL_NEW) {
2711                 hdev->send = btusb_send_frame_intel;
2712                 hdev->setup = btusb_setup_intel_new;
2713                 hdev->hw_error = btintel_hw_error;
2714                 hdev->set_bdaddr = btintel_set_bdaddr;
2715                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2716         }
2717
2718         if (id->driver_info & BTUSB_MARVELL)
2719                 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
2720
2721         if (id->driver_info & BTUSB_SWAVE) {
2722                 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
2723                 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
2724         }
2725
2726         if (id->driver_info & BTUSB_INTEL_BOOT)
2727                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
2728
2729         if (id->driver_info & BTUSB_ATH3012) {
2730                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
2731                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
2732                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2733         }
2734
2735         if (id->driver_info & BTUSB_QCA_ROME) {
2736                 data->setup_on_usb = btusb_setup_qca;
2737                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
2738         }
2739
2740 #ifdef CONFIG_BT_HCIBTUSB_RTL
2741         if (id->driver_info & BTUSB_REALTEK) {
2742                 hdev->setup = btrtl_setup_realtek;
2743
2744                 /* Realtek devices lose their updated firmware over suspend,
2745                  * but the USB hub doesn't notice any status change.
2746                  * Explicitly request a device reset on resume.
2747                  */
2748                 set_bit(BTUSB_RESET_RESUME, &data->flags);
2749         }
2750 #endif
2751
2752         if (id->driver_info & BTUSB_AMP) {
2753                 /* AMP controllers do not support SCO packets */
2754                 data->isoc = NULL;
2755         } else {
2756                 /* Interface numbers are hardcoded in the specification */
2757                 data->isoc = usb_ifnum_to_if(data->udev, 1);
2758         }
2759
2760         if (!reset)
2761                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2762
2763         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
2764                 if (!disable_scofix)
2765                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
2766         }
2767
2768         if (id->driver_info & BTUSB_BROKEN_ISOC)
2769                 data->isoc = NULL;
2770
2771         if (id->driver_info & BTUSB_DIGIANSWER) {
2772                 data->cmdreq_type = USB_TYPE_VENDOR;
2773                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2774         }
2775
2776         if (id->driver_info & BTUSB_CSR) {
2777                 struct usb_device *udev = data->udev;
2778                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
2779
2780                 /* Old firmware would otherwise execute USB reset */
2781                 if (bcdDevice < 0x117)
2782                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2783
2784                 /* Fake CSR devices with broken commands */
2785                 if (bcdDevice <= 0x100)
2786                         hdev->setup = btusb_setup_csr;
2787
2788                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
2789         }
2790
2791         if (id->driver_info & BTUSB_SNIFFER) {
2792                 struct usb_device *udev = data->udev;
2793
2794                 /* New sniffer firmware has crippled HCI interface */
2795                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
2796                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
2797         }
2798
2799         if (id->driver_info & BTUSB_INTEL_BOOT) {
2800                 /* A bug in the bootloader causes that interrupt interface is
2801                  * only enabled after receiving SetInterface(0, AltSetting=0).
2802                  */
2803                 err = usb_set_interface(data->udev, 0, 0);
2804                 if (err < 0) {
2805                         BT_ERR("failed to set interface 0, alt 0 %d", err);
2806                         hci_free_dev(hdev);
2807                         return err;
2808                 }
2809         }
2810
2811         if (data->isoc) {
2812                 err = usb_driver_claim_interface(&btusb_driver,
2813                                                  data->isoc, data);
2814                 if (err < 0) {
2815                         hci_free_dev(hdev);
2816                         return err;
2817                 }
2818         }
2819
2820         err = hci_register_dev(hdev);
2821         if (err < 0) {
2822                 hci_free_dev(hdev);
2823                 return err;
2824         }
2825
2826         usb_set_intfdata(intf, data);
2827
2828         return 0;
2829 }
2830
2831 static void btusb_disconnect(struct usb_interface *intf)
2832 {
2833         struct btusb_data *data = usb_get_intfdata(intf);
2834         struct hci_dev *hdev;
2835
2836         BT_DBG("intf %p", intf);
2837
2838         if (!data)
2839                 return;
2840
2841         hdev = data->hdev;
2842         usb_set_intfdata(data->intf, NULL);
2843
2844         if (data->isoc)
2845                 usb_set_intfdata(data->isoc, NULL);
2846
2847         hci_unregister_dev(hdev);
2848
2849         if (intf == data->isoc)
2850                 usb_driver_release_interface(&btusb_driver, data->intf);
2851         else if (data->isoc)
2852                 usb_driver_release_interface(&btusb_driver, data->isoc);
2853
2854         hci_free_dev(hdev);
2855 }
2856
2857 #ifdef CONFIG_PM
2858 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
2859 {
2860         struct btusb_data *data = usb_get_intfdata(intf);
2861
2862         BT_DBG("intf %p", intf);
2863
2864         if (data->suspend_count++)
2865                 return 0;
2866
2867         spin_lock_irq(&data->txlock);
2868         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
2869                 set_bit(BTUSB_SUSPENDING, &data->flags);
2870                 spin_unlock_irq(&data->txlock);
2871         } else {
2872                 spin_unlock_irq(&data->txlock);
2873                 data->suspend_count--;
2874                 return -EBUSY;
2875         }
2876
2877         cancel_work_sync(&data->work);
2878
2879         btusb_stop_traffic(data);
2880         usb_kill_anchored_urbs(&data->tx_anchor);
2881
2882         /* Optionally request a device reset on resume, but only when
2883          * wakeups are disabled. If wakeups are enabled we assume the
2884          * device will stay powered up throughout suspend.
2885          */
2886         if (test_bit(BTUSB_RESET_RESUME, &data->flags) &&
2887             !device_may_wakeup(&data->udev->dev))
2888                 data->udev->reset_resume = 1;
2889
2890         return 0;
2891 }
2892
2893 static void play_deferred(struct btusb_data *data)
2894 {
2895         struct urb *urb;
2896         int err;
2897
2898         while ((urb = usb_get_from_anchor(&data->deferred))) {
2899                 err = usb_submit_urb(urb, GFP_ATOMIC);
2900                 if (err < 0)
2901                         break;
2902
2903                 data->tx_in_flight++;
2904         }
2905         usb_scuttle_anchored_urbs(&data->deferred);
2906 }
2907
2908 static int btusb_resume(struct usb_interface *intf)
2909 {
2910         struct btusb_data *data = usb_get_intfdata(intf);
2911         struct hci_dev *hdev = data->hdev;
2912         int err = 0;
2913
2914         BT_DBG("intf %p", intf);
2915
2916         if (--data->suspend_count)
2917                 return 0;
2918
2919         if (!test_bit(HCI_RUNNING, &hdev->flags))
2920                 goto done;
2921
2922         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
2923                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
2924                 if (err < 0) {
2925                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
2926                         goto failed;
2927                 }
2928         }
2929
2930         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
2931                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
2932                 if (err < 0) {
2933                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
2934                         goto failed;
2935                 }
2936
2937                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
2938         }
2939
2940         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
2941                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
2942                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
2943                 else
2944                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
2945         }
2946
2947         spin_lock_irq(&data->txlock);
2948         play_deferred(data);
2949         clear_bit(BTUSB_SUSPENDING, &data->flags);
2950         spin_unlock_irq(&data->txlock);
2951         schedule_work(&data->work);
2952
2953         return 0;
2954
2955 failed:
2956         usb_scuttle_anchored_urbs(&data->deferred);
2957 done:
2958         spin_lock_irq(&data->txlock);
2959         clear_bit(BTUSB_SUSPENDING, &data->flags);
2960         spin_unlock_irq(&data->txlock);
2961
2962         return err;
2963 }
2964 #endif
2965
2966 static struct usb_driver btusb_driver = {
2967         .name           = "btusb",
2968         .probe          = btusb_probe,
2969         .disconnect     = btusb_disconnect,
2970 #ifdef CONFIG_PM
2971         .suspend        = btusb_suspend,
2972         .resume         = btusb_resume,
2973 #endif
2974         .id_table       = btusb_table,
2975         .supports_autosuspend = 1,
2976         .disable_hub_initiated_lpm = 1,
2977 };
2978
2979 module_usb_driver(btusb_driver);
2980
2981 module_param(disable_scofix, bool, 0644);
2982 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
2983
2984 module_param(force_scofix, bool, 0644);
2985 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
2986
2987 module_param(reset, bool, 0644);
2988 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
2989
2990 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
2991 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
2992 MODULE_VERSION(VERSION);
2993 MODULE_LICENSE("GPL");