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