drivers/bluetooth/btusb.c

   1 /*
   2  *
   3  *  Generic Bluetooth USB driver
   4  *
   5  *  Copyright (C) 2005-2008  Marcel Holtmann <marcel@holtmann.org>
   6  *
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, write to the Free Software
  20  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  *
  22  */
  23
  24 #include <linux/module.h>
  25 #include <linux/usb.h>
  26 #include <linux/firmware.h>
  27 #include <asm/unaligned.h>
  28
  29 #include <net/bluetooth/bluetooth.h>
  30 #include <net/bluetooth/hci_core.h>
  31
  32 #include "btintel.h"
  33 #include "btbcm.h"
  34 #include "btrtl.h"
  35
  36 #define VERSION "0.8"
  37
  38 static bool disable_scofix;
  39 static bool force_scofix;
  40
  41 static bool reset = 1;
  42
  43 static struct usb_driver btusb_driver;
  44
  45 #define BTUSB_IGNORE            0x01
  46 #define BTUSB_DIGIANSWER        0x02
  47 #define BTUSB_CSR               0x04
  48 #define BTUSB_SNIFFER           0x08
  49 #define BTUSB_BCM92035          0x10
  50 #define BTUSB_BROKEN_ISOC       0x20
  51 #define BTUSB_WRONG_SCO_MTU     0x40
  52 #define BTUSB_ATH3012           0x80
  53 #define BTUSB_INTEL             0x100
  54 #define BTUSB_INTEL_BOOT        0x200
  55 #define BTUSB_BCM_PATCHRAM      0x400
  56 #define BTUSB_MARVELL           0x800
  57 #define BTUSB_SWAVE             0x1000
  58 #define BTUSB_INTEL_NEW         0x2000
  59 #define BTUSB_AMP               0x4000
  60 #define BTUSB_QCA_ROME          0x8000
  61 #define BTUSB_BCM_APPLE         0x10000
  62 #define BTUSB_REALTEK           0x20000
  63
  64 static const struct usb_device_id btusb_table[] = {
  65         /* Generic Bluetooth USB device */
  66         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  67
  68         /* Generic Bluetooth AMP device */
  69         { USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP },
  70
  71         /* Apple-specific (Broadcom) devices */
  72         { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01),
  73           .driver_info = BTUSB_BCM_APPLE },
  74
  75         /* MediaTek MT76x0E */
  76         { USB_DEVICE(0x0e8d, 0x763f) },
  77
  78         /* Broadcom SoftSailing reporting vendor specific */
  79         { USB_DEVICE(0x0a5c, 0x21e1) },
  80
  81         /* Apple MacBookPro 7,1 */
  82         { USB_DEVICE(0x05ac, 0x8213) },
  83
  84         /* Apple iMac11,1 */
  85         { USB_DEVICE(0x05ac, 0x8215) },
  86
  87         /* Apple MacBookPro6,2 */
  88         { USB_DEVICE(0x05ac, 0x8218) },
  89
  90         /* Apple MacBookAir3,1, MacBookAir3,2 */
  91         { USB_DEVICE(0x05ac, 0x821b) },
  92
  93         /* Apple MacBookAir4,1 */
  94         { USB_DEVICE(0x05ac, 0x821f) },
  95
  96         /* Apple MacBookPro8,2 */
  97         { USB_DEVICE(0x05ac, 0x821a) },
  98
  99         /* Apple MacMini5,1 */
 100         { USB_DEVICE(0x05ac, 0x8281) },
 101
 102         /* AVM BlueFRITZ! USB v2.0 */
 103         { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE },
 104
 105         /* Bluetooth Ultraport Module from IBM */
 106         { USB_DEVICE(0x04bf, 0x030a) },
 107
 108         /* ALPS Modules with non-standard id */
 109         { USB_DEVICE(0x044e, 0x3001) },
 110         { USB_DEVICE(0x044e, 0x3002) },
 111
 112         /* Ericsson with non-standard id */
 113         { USB_DEVICE(0x0bdb, 0x1002) },
 114
 115         /* Canyon CN-BTU1 with HID interfaces */
 116         { USB_DEVICE(0x0c10, 0x0000) },
 117
 118         /* Broadcom BCM20702A0 */
 119         { USB_DEVICE(0x413c, 0x8197) },
 120
 121         /* Broadcom BCM20702B0 (Dynex/Insignia) */
 122         { USB_DEVICE(0x19ff, 0x0239), .driver_info = BTUSB_BCM_PATCHRAM },
 123
 124         /* Foxconn - Hon Hai */
 125         { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01),
 126           .driver_info = BTUSB_BCM_PATCHRAM },
 127
 128         /* Lite-On Technology - Broadcom based */
 129         { USB_VENDOR_AND_INTERFACE_INFO(0x04ca, 0xff, 0x01, 0x01),
 130           .driver_info = BTUSB_BCM_PATCHRAM },
 131
 132         /* Broadcom devices with vendor specific id */
 133         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
 134           .driver_info = BTUSB_BCM_PATCHRAM },
 135
 136         /* ASUSTek Computer - Broadcom based */
 137         { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01),
 138           .driver_info = BTUSB_BCM_PATCHRAM },
 139
 140         /* Belkin F8065bf - Broadcom based */
 141         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01),
 142           .driver_info = BTUSB_BCM_PATCHRAM },
 143
 144         /* IMC Networks - Broadcom based */
 145         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01),
 146           .driver_info = BTUSB_BCM_PATCHRAM },
 147
 148         /* Intel Bluetooth USB Bootloader (RAM module) */
 149         { USB_DEVICE(0x8087, 0x0a5a),
 150           .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
 151
 152         { }     /* Terminating entry */
 153 };
 154
 155 MODULE_DEVICE_TABLE(usb, btusb_table);
 156
 157 static const struct usb_device_id blacklist_table[] = {
 158         /* CSR BlueCore devices */
 159         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 160
 161         /* Broadcom BCM2033 without firmware */
 162         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 163
 164         /* Atheros 3011 with sflash firmware */
 165         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 166         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 167         { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE },
 168         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 169         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 170         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 171         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 172
 173         /* Atheros AR9285 Malbec with sflash firmware */
 174         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 175
 176         /* Atheros 3012 with sflash firmware */
 177         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 178         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 179         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 180         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 181         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 182         { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
 183         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 184         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 185         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 186         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 187         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 188         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 189         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 190         { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
 191         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 192         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 193         { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
 194         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 195         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 196         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 197         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 198         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 199         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
 200         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 201         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 202         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 203         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 204         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 205         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 206         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 207         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 208         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 209         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 210         { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
 211         { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
 212         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
 213
 214         /* Atheros AR5BBU12 with sflash firmware */
 215         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 216
 217         /* Atheros AR5BBU12 with sflash firmware */
 218         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 219         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 220
 221         /* QCA ROME chipset */
 222         { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME },
 223         { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME },
 224
 225         /* Broadcom BCM2035 */
 226         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 227         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 228         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 229
 230         /* Broadcom BCM2045 */
 231         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 232         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 233
 234         /* IBM/Lenovo ThinkPad with Broadcom chip */
 235         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 236         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 237
 238         /* HP laptop with Broadcom chip */
 239         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 240
 241         /* Dell laptop with Broadcom chip */
 242         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 243
 244         /* Dell Wireless 370 and 410 devices */
 245         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 246         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 247
 248         /* Belkin F8T012 and F8T013 devices */
 249         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 250         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 251
 252         /* Asus WL-BTD202 device */
 253         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 254
 255         /* Kensington Bluetooth USB adapter */
 256         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 257
 258         /* RTX Telecom based adapters with buggy SCO support */
 259         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 260         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 261
 262         /* CONWISE Technology based adapters with buggy SCO support */
 263         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 264
 265         /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
 266         { USB_DEVICE(0x1300, 0x0001), .driver_info = BTUSB_SWAVE },
 267
 268         /* Digianswer devices */
 269         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 270         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 271
 272         /* CSR BlueCore Bluetooth Sniffer */
 273         { USB_DEVICE(0x0a12, 0x0002),
 274           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 275
 276         /* Frontline ComProbe Bluetooth Sniffer */
 277         { USB_DEVICE(0x16d3, 0x0002),
 278           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 279
 280         /* Marvell Bluetooth devices */
 281         { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
 282         { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
 283
 284         /* Intel Bluetooth devices */
 285         { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR },
 286         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 287         { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
 288         { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_NEW },
 289
 290         /* Other Intel Bluetooth devices */
 291         { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01),
 292           .driver_info = BTUSB_IGNORE },
 293
 294         /* Realtek Bluetooth devices */
 295         { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01),
 296           .driver_info = BTUSB_REALTEK },
 297
 298         /* Additional Realtek 8723AE Bluetooth devices */
 299         { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK },
 300         { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK },
 301
 302         /* Additional Realtek 8723BE Bluetooth devices */
 303         { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK },
 304         { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK },
 305         { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
 306         { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
 307         { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },
 308
 309         /* Additional Realtek 8821AE Bluetooth devices */
 310         { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
 311         { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },
 312         { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK },
 313         { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK },
 314         { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK },
 315
 316         { }     /* Terminating entry */
 317 };
 318
 319 #define BTUSB_MAX_ISOC_FRAMES   10
 320
 321 #define BTUSB_INTR_RUNNING      0
 322 #define BTUSB_BULK_RUNNING      1
 323 #define BTUSB_ISOC_RUNNING      2
 324 #define BTUSB_SUSPENDING        3
 325 #define BTUSB_DID_ISO_RESUME    4
 326 #define BTUSB_BOOTLOADER        5
 327 #define BTUSB_DOWNLOADING       6
 328 #define BTUSB_FIRMWARE_LOADED   7
 329 #define BTUSB_FIRMWARE_FAILED   8
 330 #define BTUSB_BOOTING           9
 331
 332 struct btusb_data {
 333         struct hci_dev       *hdev;
 334         struct usb_device    *udev;
 335         struct usb_interface *intf;
 336         struct usb_interface *isoc;
 337
 338         unsigned long flags;
 339
 340         struct work_struct work;
 341         struct work_struct waker;
 342
 343         struct usb_anchor deferred;
 344         struct usb_anchor tx_anchor;
 345         int tx_in_flight;
 346         spinlock_t txlock;
 347
 348         struct usb_anchor intr_anchor;
 349         struct usb_anchor bulk_anchor;
 350         struct usb_anchor isoc_anchor;
 351         spinlock_t rxlock;
 352
 353         struct sk_buff *evt_skb;
 354         struct sk_buff *acl_skb;
 355         struct sk_buff *sco_skb;
 356
 357         struct usb_endpoint_descriptor *intr_ep;
 358         struct usb_endpoint_descriptor *bulk_tx_ep;
 359         struct usb_endpoint_descriptor *bulk_rx_ep;
 360         struct usb_endpoint_descriptor *isoc_tx_ep;
 361         struct usb_endpoint_descriptor *isoc_rx_ep;
 362
 363         __u8 cmdreq_type;
 364         __u8 cmdreq;
 365
 366         unsigned int sco_num;
 367         int isoc_altsetting;
 368         int suspend_count;
 369
 370         int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
 371         int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
 372
 373         int (*setup_on_usb)(struct hci_dev *hdev);
 374 };
 375
 376 static inline void btusb_free_frags(struct btusb_data *data)
 377 {
 378         unsigned long flags;
 379
 380         spin_lock_irqsave(&data->rxlock, flags);
 381
 382         kfree_skb(data->evt_skb);
 383         data->evt_skb = NULL;
 384
 385         kfree_skb(data->acl_skb);
 386         data->acl_skb = NULL;
 387
 388         kfree_skb(data->sco_skb);
 389         data->sco_skb = NULL;
 390
 391         spin_unlock_irqrestore(&data->rxlock, flags);
 392 }
 393
 394 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
 395 {
 396         struct sk_buff *skb;
 397         int err = 0;
 398
 399         spin_lock(&data->rxlock);
 400         skb = data->evt_skb;
 401
 402         while (count) {
 403                 int len;
 404
 405                 if (!skb) {
 406                         skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
 407                         if (!skb) {
 408                                 err = -ENOMEM;
 409                                 break;
 410                         }
 411
 412                         bt_cb(skb)->pkt_type = HCI_EVENT_PKT;
 413                         bt_cb(skb)->expect = HCI_EVENT_HDR_SIZE;
 414                 }
 415
 416                 len = min_t(uint, bt_cb(skb)->expect, count);
 417                 memcpy(skb_put(skb, len), buffer, len);
 418
 419                 count -= len;
 420                 buffer += len;
 421                 bt_cb(skb)->expect -= len;
 422
 423                 if (skb->len == HCI_EVENT_HDR_SIZE) {
 424                         /* Complete event header */
 425                         bt_cb(skb)->expect = hci_event_hdr(skb)->plen;
 426
 427                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 428                                 kfree_skb(skb);
 429                                 skb = NULL;
 430
 431                                 err = -EILSEQ;
 432                                 break;
 433                         }
 434                 }
 435
 436                 if (bt_cb(skb)->expect == 0) {
 437                         /* Complete frame */
 438                         data->recv_event(data->hdev, skb);
 439                         skb = NULL;
 440                 }
 441         }
 442
 443         data->evt_skb = skb;
 444         spin_unlock(&data->rxlock);
 445
 446         return err;
 447 }
 448
 449 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
 450 {
 451         struct sk_buff *skb;
 452         int err = 0;
 453
 454         spin_lock(&data->rxlock);
 455         skb = data->acl_skb;
 456
 457         while (count) {
 458                 int len;
 459
 460                 if (!skb) {
 461                         skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
 462                         if (!skb) {
 463                                 err = -ENOMEM;
 464                                 break;
 465                         }
 466
 467                         bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT;
 468                         bt_cb(skb)->expect = HCI_ACL_HDR_SIZE;
 469                 }
 470
 471                 len = min_t(uint, bt_cb(skb)->expect, count);
 472                 memcpy(skb_put(skb, len), buffer, len);
 473
 474                 count -= len;
 475                 buffer += len;
 476                 bt_cb(skb)->expect -= len;
 477
 478                 if (skb->len == HCI_ACL_HDR_SIZE) {
 479                         __le16 dlen = hci_acl_hdr(skb)->dlen;
 480
 481                         /* Complete ACL header */
 482                         bt_cb(skb)->expect = __le16_to_cpu(dlen);
 483
 484                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 485                                 kfree_skb(skb);
 486                                 skb = NULL;
 487
 488                                 err = -EILSEQ;
 489                                 break;
 490                         }
 491                 }
 492
 493                 if (bt_cb(skb)->expect == 0) {
 494                         /* Complete frame */
 495                         hci_recv_frame(data->hdev, skb);
 496                         skb = NULL;
 497                 }
 498         }
 499
 500         data->acl_skb = skb;
 501         spin_unlock(&data->rxlock);
 502
 503         return err;
 504 }
 505
 506 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
 507 {
 508         struct sk_buff *skb;
 509         int err = 0;
 510
 511         spin_lock(&data->rxlock);
 512         skb = data->sco_skb;
 513
 514         while (count) {
 515                 int len;
 516
 517                 if (!skb) {
 518                         skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
 519                         if (!skb) {
 520                                 err = -ENOMEM;
 521                                 break;
 522                         }
 523
 524                         bt_cb(skb)->pkt_type = HCI_SCODATA_PKT;
 525                         bt_cb(skb)->expect = HCI_SCO_HDR_SIZE;
 526                 }
 527
 528                 len = min_t(uint, bt_cb(skb)->expect, count);
 529                 memcpy(skb_put(skb, len), buffer, len);
 530
 531                 count -= len;
 532                 buffer += len;
 533                 bt_cb(skb)->expect -= len;
 534
 535                 if (skb->len == HCI_SCO_HDR_SIZE) {
 536                         /* Complete SCO header */
 537                         bt_cb(skb)->expect = hci_sco_hdr(skb)->dlen;
 538
 539                         if (skb_tailroom(skb) < bt_cb(skb)->expect) {
 540                                 kfree_skb(skb);
 541                                 skb = NULL;
 542
 543                                 err = -EILSEQ;
 544                                 break;
 545                         }
 546                 }
 547
 548                 if (bt_cb(skb)->expect == 0) {
 549                         /* Complete frame */
 550                         hci_recv_frame(data->hdev, skb);
 551                         skb = NULL;
 552                 }
 553         }
 554
 555         data->sco_skb = skb;
 556         spin_unlock(&data->rxlock);
 557
 558         return err;
 559 }
 560
 561 static void btusb_intr_complete(struct urb *urb)
 562 {
 563         struct hci_dev *hdev = urb->context;
 564         struct btusb_data *data = hci_get_drvdata(hdev);
 565         int err;
 566
 567         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 568                urb->actual_length);
 569
 570         if (!test_bit(HCI_RUNNING, &hdev->flags))
 571                 return;
 572
 573         if (urb->status == 0) {
 574                 hdev->stat.byte_rx += urb->actual_length;
 575
 576                 if (btusb_recv_intr(data, urb->transfer_buffer,
 577                                     urb->actual_length) < 0) {
 578                         BT_ERR("%s corrupted event packet", hdev->name);
 579                         hdev->stat.err_rx++;
 580                 }
 581         } else if (urb->status == -ENOENT) {
 582                 /* Avoid suspend failed when usb_kill_urb */
 583                 return;
 584         }
 585
 586         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 587                 return;
 588
 589         usb_mark_last_busy(data->udev);
 590         usb_anchor_urb(urb, &data->intr_anchor);
 591
 592         err = usb_submit_urb(urb, GFP_ATOMIC);
 593         if (err < 0) {
 594                 /* -EPERM: urb is being killed;
 595                  * -ENODEV: device got disconnected */
 596                 if (err != -EPERM && err != -ENODEV)
 597                         BT_ERR("%s urb %p failed to resubmit (%d)",
 598                                hdev->name, urb, -err);
 599                 usb_unanchor_urb(urb);
 600         }
 601 }
 602
 603 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 604 {
 605         struct btusb_data *data = hci_get_drvdata(hdev);
 606         struct urb *urb;
 607         unsigned char *buf;
 608         unsigned int pipe;
 609         int err, size;
 610
 611         BT_DBG("%s", hdev->name);
 612
 613         if (!data->intr_ep)
 614                 return -ENODEV;
 615
 616         urb = usb_alloc_urb(0, mem_flags);
 617         if (!urb)
 618                 return -ENOMEM;
 619
 620         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 621
 622         buf = kmalloc(size, mem_flags);
 623         if (!buf) {
 624                 usb_free_urb(urb);
 625                 return -ENOMEM;
 626         }
 627
 628         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 629
 630         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 631                          btusb_intr_complete, hdev, data->intr_ep->bInterval);
 632
 633         urb->transfer_flags |= URB_FREE_BUFFER;
 634
 635         usb_anchor_urb(urb, &data->intr_anchor);
 636
 637         err = usb_submit_urb(urb, mem_flags);
 638         if (err < 0) {
 639                 if (err != -EPERM && err != -ENODEV)
 640                         BT_ERR("%s urb %p submission failed (%d)",
 641                                hdev->name, urb, -err);
 642                 usb_unanchor_urb(urb);
 643         }
 644
 645         usb_free_urb(urb);
 646
 647         return err;
 648 }
 649
 650 static void btusb_bulk_complete(struct urb *urb)
 651 {
 652         struct hci_dev *hdev = urb->context;
 653         struct btusb_data *data = hci_get_drvdata(hdev);
 654         int err;
 655
 656         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 657                urb->actual_length);
 658
 659         if (!test_bit(HCI_RUNNING, &hdev->flags))
 660                 return;
 661
 662         if (urb->status == 0) {
 663                 hdev->stat.byte_rx += urb->actual_length;
 664
 665                 if (data->recv_bulk(data, urb->transfer_buffer,
 666                                     urb->actual_length) < 0) {
 667                         BT_ERR("%s corrupted ACL packet", hdev->name);
 668                         hdev->stat.err_rx++;
 669                 }
 670         } else if (urb->status == -ENOENT) {
 671                 /* Avoid suspend failed when usb_kill_urb */
 672                 return;
 673         }
 674
 675         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 676                 return;
 677
 678         usb_anchor_urb(urb, &data->bulk_anchor);
 679         usb_mark_last_busy(data->udev);
 680
 681         err = usb_submit_urb(urb, GFP_ATOMIC);
 682         if (err < 0) {
 683                 /* -EPERM: urb is being killed;
 684                  * -ENODEV: device got disconnected */
 685                 if (err != -EPERM && err != -ENODEV)
 686                         BT_ERR("%s urb %p failed to resubmit (%d)",
 687                                hdev->name, urb, -err);
 688                 usb_unanchor_urb(urb);
 689         }
 690 }
 691
 692 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 693 {
 694         struct btusb_data *data = hci_get_drvdata(hdev);
 695         struct urb *urb;
 696         unsigned char *buf;
 697         unsigned int pipe;
 698         int err, size = HCI_MAX_FRAME_SIZE;
 699
 700         BT_DBG("%s", hdev->name);
 701
 702         if (!data->bulk_rx_ep)
 703                 return -ENODEV;
 704
 705         urb = usb_alloc_urb(0, mem_flags);
 706         if (!urb)
 707                 return -ENOMEM;
 708
 709         buf = kmalloc(size, mem_flags);
 710         if (!buf) {
 711                 usb_free_urb(urb);
 712                 return -ENOMEM;
 713         }
 714
 715         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 716
 717         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
 718                           btusb_bulk_complete, hdev);
 719
 720         urb->transfer_flags |= URB_FREE_BUFFER;
 721
 722         usb_mark_last_busy(data->udev);
 723         usb_anchor_urb(urb, &data->bulk_anchor);
 724
 725         err = usb_submit_urb(urb, mem_flags);
 726         if (err < 0) {
 727                 if (err != -EPERM && err != -ENODEV)
 728                         BT_ERR("%s urb %p submission failed (%d)",
 729                                hdev->name, urb, -err);
 730                 usb_unanchor_urb(urb);
 731         }
 732
 733         usb_free_urb(urb);
 734
 735         return err;
 736 }
 737
 738 static void btusb_isoc_complete(struct urb *urb)
 739 {
 740         struct hci_dev *hdev = urb->context;
 741         struct btusb_data *data = hci_get_drvdata(hdev);
 742         int i, err;
 743
 744         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 745                urb->actual_length);
 746
 747         if (!test_bit(HCI_RUNNING, &hdev->flags))
 748                 return;
 749
 750         if (urb->status == 0) {
 751                 for (i = 0; i < urb->number_of_packets; i++) {
 752                         unsigned int offset = urb->iso_frame_desc[i].offset;
 753                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 754
 755                         if (urb->iso_frame_desc[i].status)
 756                                 continue;
 757
 758                         hdev->stat.byte_rx += length;
 759
 760                         if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
 761                                             length) < 0) {
 762                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 763                                 hdev->stat.err_rx++;
 764                         }
 765                 }
 766         } else if (urb->status == -ENOENT) {
 767                 /* Avoid suspend failed when usb_kill_urb */
 768                 return;
 769         }
 770
 771         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 772                 return;
 773
 774         usb_anchor_urb(urb, &data->isoc_anchor);
 775
 776         err = usb_submit_urb(urb, GFP_ATOMIC);
 777         if (err < 0) {
 778                 /* -EPERM: urb is being killed;
 779                  * -ENODEV: device got disconnected */
 780                 if (err != -EPERM && err != -ENODEV)
 781                         BT_ERR("%s urb %p failed to resubmit (%d)",
 782                                hdev->name, urb, -err);
 783                 usb_unanchor_urb(urb);
 784         }
 785 }
 786
 787 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 788 {
 789         int i, offset = 0;
 790
 791         BT_DBG("len %d mtu %d", len, mtu);
 792
 793         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 794                                         i++, offset += mtu, len -= mtu) {
 795                 urb->iso_frame_desc[i].offset = offset;
 796                 urb->iso_frame_desc[i].length = mtu;
 797         }
 798
 799         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 800                 urb->iso_frame_desc[i].offset = offset;
 801                 urb->iso_frame_desc[i].length = len;
 802                 i++;
 803         }
 804
 805         urb->number_of_packets = i;
 806 }
 807
 808 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 809 {
 810         struct btusb_data *data = hci_get_drvdata(hdev);
 811         struct urb *urb;
 812         unsigned char *buf;
 813         unsigned int pipe;
 814         int err, size;
 815
 816         BT_DBG("%s", hdev->name);
 817
 818         if (!data->isoc_rx_ep)
 819                 return -ENODEV;
 820
 821         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 822         if (!urb)
 823                 return -ENOMEM;
 824
 825         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 826                                                 BTUSB_MAX_ISOC_FRAMES;
 827
 828         buf = kmalloc(size, mem_flags);
 829         if (!buf) {
 830                 usb_free_urb(urb);
 831                 return -ENOMEM;
 832         }
 833
 834         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 835
 836         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 837                          hdev, data->isoc_rx_ep->bInterval);
 838
 839         urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
 840
 841         __fill_isoc_descriptor(urb, size,
 842                                le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 843
 844         usb_anchor_urb(urb, &data->isoc_anchor);
 845
 846         err = usb_submit_urb(urb, mem_flags);
 847         if (err < 0) {
 848                 if (err != -EPERM && err != -ENODEV)
 849                         BT_ERR("%s urb %p submission failed (%d)",
 850                                hdev->name, urb, -err);
 851                 usb_unanchor_urb(urb);
 852         }
 853
 854         usb_free_urb(urb);
 855
 856         return err;
 857 }
 858
 859 static void btusb_tx_complete(struct urb *urb)
 860 {
 861         struct sk_buff *skb = urb->context;
 862         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
 863         struct btusb_data *data = hci_get_drvdata(hdev);
 864
 865         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 866                urb->actual_length);
 867
 868         if (!test_bit(HCI_RUNNING, &hdev->flags))
 869                 goto done;
 870
 871         if (!urb->status)
 872                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 873         else
 874                 hdev->stat.err_tx++;
 875
 876 done:
 877         spin_lock(&data->txlock);
 878         data->tx_in_flight--;
 879         spin_unlock(&data->txlock);
 880
 881         kfree(urb->setup_packet);
 882
 883         kfree_skb(skb);
 884 }
 885
 886 static void btusb_isoc_tx_complete(struct urb *urb)
 887 {
 888         struct sk_buff *skb = urb->context;
 889         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
 890
 891         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 892                urb->actual_length);
 893
 894         if (!test_bit(HCI_RUNNING, &hdev->flags))
 895                 goto done;
 896
 897         if (!urb->status)
 898                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 899         else
 900                 hdev->stat.err_tx++;
 901
 902 done:
 903         kfree(urb->setup_packet);
 904
 905         kfree_skb(skb);
 906 }
 907
 908 static int btusb_open(struct hci_dev *hdev)
 909 {
 910         struct btusb_data *data = hci_get_drvdata(hdev);
 911         int err;
 912
 913         BT_DBG("%s", hdev->name);
 914
 915         /* Patching USB firmware files prior to starting any URBs of HCI path
 916          * It is more safe to use USB bulk channel for downloading USB patch
 917          */
 918         if (data->setup_on_usb) {
 919                 err = data->setup_on_usb(hdev);
 920                 if (err < 0)
 921                         return err;
 922         }
 923
 924         err = usb_autopm_get_interface(data->intf);
 925         if (err < 0)
 926                 return err;
 927
 928         data->intf->needs_remote_wakeup = 1;
 929
 930         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 931                 goto done;
 932
 933         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 934                 goto done;
 935
 936         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 937         if (err < 0)
 938                 goto failed;
 939
 940         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 941         if (err < 0) {
 942                 usb_kill_anchored_urbs(&data->intr_anchor);
 943                 goto failed;
 944         }
 945
 946         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 947         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 948
 949 done:
 950         usb_autopm_put_interface(data->intf);
 951         return 0;
 952
 953 failed:
 954         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 955         clear_bit(HCI_RUNNING, &hdev->flags);
 956         usb_autopm_put_interface(data->intf);
 957         return err;
 958 }
 959
 960 static void btusb_stop_traffic(struct btusb_data *data)
 961 {
 962         usb_kill_anchored_urbs(&data->intr_anchor);
 963         usb_kill_anchored_urbs(&data->bulk_anchor);
 964         usb_kill_anchored_urbs(&data->isoc_anchor);
 965 }
 966
 967 static int btusb_close(struct hci_dev *hdev)
 968 {
 969         struct btusb_data *data = hci_get_drvdata(hdev);
 970         int err;
 971
 972         BT_DBG("%s", hdev->name);
 973
 974         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 975                 return 0;
 976
 977         cancel_work_sync(&data->work);
 978         cancel_work_sync(&data->waker);
 979
 980         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 981         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 982         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 983
 984         btusb_stop_traffic(data);
 985         btusb_free_frags(data);
 986
 987         err = usb_autopm_get_interface(data->intf);
 988         if (err < 0)
 989                 goto failed;
 990
 991         data->intf->needs_remote_wakeup = 0;
 992         usb_autopm_put_interface(data->intf);
 993
 994 failed:
 995         usb_scuttle_anchored_urbs(&data->deferred);
 996         return 0;
 997 }
 998
 999 static int btusb_flush(struct hci_dev *hdev)
1000 {
1001         struct btusb_data *data = hci_get_drvdata(hdev);
1002
1003         BT_DBG("%s", hdev->name);
1004
1005         usb_kill_anchored_urbs(&data->tx_anchor);
1006         btusb_free_frags(data);
1007
1008         return 0;
1009 }
1010
1011 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
1012 {
1013         struct btusb_data *data = hci_get_drvdata(hdev);
1014         struct usb_ctrlrequest *dr;
1015         struct urb *urb;
1016         unsigned int pipe;
1017
1018         urb = usb_alloc_urb(0, GFP_KERNEL);
1019         if (!urb)
1020                 return ERR_PTR(-ENOMEM);
1021
1022         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
1023         if (!dr) {
1024                 usb_free_urb(urb);
1025                 return ERR_PTR(-ENOMEM);
1026         }
1027
1028         dr->bRequestType = data->cmdreq_type;
1029         dr->bRequest     = data->cmdreq;
1030         dr->wIndex       = 0;
1031         dr->wValue       = 0;
1032         dr->wLength      = __cpu_to_le16(skb->len);
1033
1034         pipe = usb_sndctrlpipe(data->udev, 0x00);
1035
1036         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
1037                              skb->data, skb->len, btusb_tx_complete, skb);
1038
1039         skb->dev = (void *)hdev;
1040
1041         return urb;
1042 }
1043
1044 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
1045 {
1046         struct btusb_data *data = hci_get_drvdata(hdev);
1047         struct urb *urb;
1048         unsigned int pipe;
1049
1050         if (!data->bulk_tx_ep)
1051                 return ERR_PTR(-ENODEV);
1052
1053         urb = usb_alloc_urb(0, GFP_KERNEL);
1054         if (!urb)
1055                 return ERR_PTR(-ENOMEM);
1056
1057         pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1058
1059         usb_fill_bulk_urb(urb, data->udev, pipe,
1060                           skb->data, skb->len, btusb_tx_complete, skb);
1061
1062         skb->dev = (void *)hdev;
1063
1064         return urb;
1065 }
1066
1067 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1068 {
1069         struct btusb_data *data = hci_get_drvdata(hdev);
1070         struct urb *urb;
1071         unsigned int pipe;
1072
1073         if (!data->isoc_tx_ep)
1074                 return ERR_PTR(-ENODEV);
1075
1076         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1077         if (!urb)
1078                 return ERR_PTR(-ENOMEM);
1079
1080         pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1081
1082         usb_fill_int_urb(urb, data->udev, pipe,
1083                          skb->data, skb->len, btusb_isoc_tx_complete,
1084                          skb, data->isoc_tx_ep->bInterval);
1085
1086         urb->transfer_flags  = URB_ISO_ASAP;
1087
1088         __fill_isoc_descriptor(urb, skb->len,
1089                                le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1090
1091         skb->dev = (void *)hdev;
1092
1093         return urb;
1094 }
1095
1096 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1097 {
1098         struct btusb_data *data = hci_get_drvdata(hdev);
1099         int err;
1100
1101         usb_anchor_urb(urb, &data->tx_anchor);
1102
1103         err = usb_submit_urb(urb, GFP_KERNEL);
1104         if (err < 0) {
1105                 if (err != -EPERM && err != -ENODEV)
1106                         BT_ERR("%s urb %p submission failed (%d)",
1107                                hdev->name, urb, -err);
1108                 kfree(urb->setup_packet);
1109                 usb_unanchor_urb(urb);
1110         } else {
1111                 usb_mark_last_busy(data->udev);
1112         }
1113
1114         usb_free_urb(urb);
1115         return err;
1116 }
1117
1118 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1119 {
1120         struct btusb_data *data = hci_get_drvdata(hdev);
1121         unsigned long flags;
1122         bool suspending;
1123
1124         spin_lock_irqsave(&data->txlock, flags);
1125         suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1126         if (!suspending)
1127                 data->tx_in_flight++;
1128         spin_unlock_irqrestore(&data->txlock, flags);
1129
1130         if (!suspending)
1131                 return submit_tx_urb(hdev, urb);
1132
1133         usb_anchor_urb(urb, &data->deferred);
1134         schedule_work(&data->waker);
1135
1136         usb_free_urb(urb);
1137         return 0;
1138 }
1139
1140 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1141 {
1142         struct urb *urb;
1143
1144         BT_DBG("%s", hdev->name);
1145
1146         if (!test_bit(HCI_RUNNING, &hdev->flags))
1147                 return -EBUSY;
1148
1149         switch (bt_cb(skb)->pkt_type) {
1150         case HCI_COMMAND_PKT:
1151                 urb = alloc_ctrl_urb(hdev, skb);
1152                 if (IS_ERR(urb))
1153                         return PTR_ERR(urb);
1154
1155                 hdev->stat.cmd_tx++;
1156                 return submit_or_queue_tx_urb(hdev, urb);
1157
1158         case HCI_ACLDATA_PKT:
1159                 urb = alloc_bulk_urb(hdev, skb);
1160                 if (IS_ERR(urb))
1161                         return PTR_ERR(urb);
1162
1163                 hdev->stat.acl_tx++;
1164                 return submit_or_queue_tx_urb(hdev, urb);
1165
1166         case HCI_SCODATA_PKT:
1167                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1168                         return -ENODEV;
1169
1170                 urb = alloc_isoc_urb(hdev, skb);
1171                 if (IS_ERR(urb))
1172                         return PTR_ERR(urb);
1173
1174                 hdev->stat.sco_tx++;
1175                 return submit_tx_urb(hdev, urb);
1176         }
1177
1178         return -EILSEQ;
1179 }
1180
1181 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1182 {
1183         struct btusb_data *data = hci_get_drvdata(hdev);
1184
1185         BT_DBG("%s evt %d", hdev->name, evt);
1186
1187         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1188                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1189                 schedule_work(&data->work);
1190         }
1191 }
1192
1193 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1194 {
1195         struct btusb_data *data = hci_get_drvdata(hdev);
1196         struct usb_interface *intf = data->isoc;
1197         struct usb_endpoint_descriptor *ep_desc;
1198         int i, err;
1199
1200         if (!data->isoc)
1201                 return -ENODEV;
1202
1203         err = usb_set_interface(data->udev, 1, altsetting);
1204         if (err < 0) {
1205                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
1206                 return err;
1207         }
1208
1209         data->isoc_altsetting = altsetting;
1210
1211         data->isoc_tx_ep = NULL;
1212         data->isoc_rx_ep = NULL;
1213
1214         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1215                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1216
1217                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1218                         data->isoc_tx_ep = ep_desc;
1219                         continue;
1220                 }
1221
1222                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1223                         data->isoc_rx_ep = ep_desc;
1224                         continue;
1225                 }
1226         }
1227
1228         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1229                 BT_ERR("%s invalid SCO descriptors", hdev->name);
1230                 return -ENODEV;
1231         }
1232
1233         return 0;
1234 }
1235
1236 static void btusb_work(struct work_struct *work)
1237 {
1238         struct btusb_data *data = container_of(work, struct btusb_data, work);
1239         struct hci_dev *hdev = data->hdev;
1240         int new_alts;
1241         int err;
1242
1243         if (data->sco_num > 0) {
1244                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1245                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1246                         if (err < 0) {
1247                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1248                                 usb_kill_anchored_urbs(&data->isoc_anchor);
1249                                 return;
1250                         }
1251
1252                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1253                 }
1254
1255                 if (hdev->voice_setting & 0x0020) {
1256                         static const int alts[3] = { 2, 4, 5 };
1257
1258                         new_alts = alts[data->sco_num - 1];
1259                 } else {
1260                         new_alts = data->sco_num;
1261                 }
1262
1263                 if (data->isoc_altsetting != new_alts) {
1264                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1265                         usb_kill_anchored_urbs(&data->isoc_anchor);
1266
1267                         if (__set_isoc_interface(hdev, new_alts) < 0)
1268                                 return;
1269                 }
1270
1271                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1272                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1273                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1274                         else
1275                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1276                 }
1277         } else {
1278                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1279                 usb_kill_anchored_urbs(&data->isoc_anchor);
1280
1281                 __set_isoc_interface(hdev, 0);
1282                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1283                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1284         }
1285 }
1286
1287 static void btusb_waker(struct work_struct *work)
1288 {
1289         struct btusb_data *data = container_of(work, struct btusb_data, waker);
1290         int err;
1291
1292         err = usb_autopm_get_interface(data->intf);
1293         if (err < 0)
1294                 return;
1295
1296         usb_autopm_put_interface(data->intf);
1297 }
1298
1299 static struct sk_buff *btusb_read_local_version(struct hci_dev *hdev)
1300 {
1301         struct sk_buff *skb;
1302
1303         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1304                              HCI_INIT_TIMEOUT);
1305         if (IS_ERR(skb)) {
1306                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION failed (%ld)",
1307                        hdev->name, PTR_ERR(skb));
1308                 return skb;
1309         }
1310
1311         if (skb->len != sizeof(struct hci_rp_read_local_version)) {
1312                 BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION event length mismatch",
1313                        hdev->name);
1314                 kfree_skb(skb);
1315                 return ERR_PTR(-EIO);
1316         }
1317
1318         return skb;
1319 }
1320
1321 static int btusb_setup_bcm92035(struct hci_dev *hdev)
1322 {
1323         struct sk_buff *skb;
1324         u8 val = 0x00;
1325
1326         BT_DBG("%s", hdev->name);
1327
1328         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1329         if (IS_ERR(skb))
1330                 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb));
1331         else
1332                 kfree_skb(skb);
1333
1334         return 0;
1335 }
1336
1337 static int btusb_setup_csr(struct hci_dev *hdev)
1338 {
1339         struct hci_rp_read_local_version *rp;
1340         struct sk_buff *skb;
1341         int ret;
1342
1343         BT_DBG("%s", hdev->name);
1344
1345         skb = btusb_read_local_version(hdev);
1346         if (IS_ERR(skb))
1347                 return -PTR_ERR(skb);
1348
1349         rp = (struct hci_rp_read_local_version *)skb->data;
1350
1351         if (!rp->status) {
1352                 if (le16_to_cpu(rp->manufacturer) != 10) {
1353                         /* Clear the reset quirk since this is not an actual
1354                          * early Bluetooth 1.1 device from CSR.
1355                          */
1356                         clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1357
1358                         /* These fake CSR controllers have all a broken
1359                          * stored link key handling and so just disable it.
1360                          */
1361                         set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY,
1362                                 &hdev->quirks);
1363                 }
1364         }
1365
1366         ret = -bt_to_errno(rp->status);
1367
1368         kfree_skb(skb);
1369
1370         return ret;
1371 }
1372
1373 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1374                                                        struct intel_version *ver)
1375 {
1376         const struct firmware *fw;
1377         char fwname[64];
1378         int ret;
1379
1380         snprintf(fwname, sizeof(fwname),
1381                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1382                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
1383                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1384                  ver->fw_build_ww, ver->fw_build_yy);
1385
1386         ret = request_firmware(&fw, fwname, &hdev->dev);
1387         if (ret < 0) {
1388                 if (ret == -EINVAL) {
1389                         BT_ERR("%s Intel firmware file request failed (%d)",
1390                                hdev->name, ret);
1391                         return NULL;
1392                 }
1393
1394                 BT_ERR("%s failed to open Intel firmware file: %s(%d)",
1395                        hdev->name, fwname, ret);
1396
1397                 /* If the correct firmware patch file is not found, use the
1398                  * default firmware patch file instead
1399                  */
1400                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1401                          ver->hw_platform, ver->hw_variant);
1402                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1403                         BT_ERR("%s failed to open default Intel fw file: %s",
1404                                hdev->name, fwname);
1405                         return NULL;
1406                 }
1407         }
1408
1409         BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname);
1410
1411         return fw;
1412 }
1413
1414 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1415                                       const struct firmware *fw,
1416                                       const u8 **fw_ptr, int *disable_patch)
1417 {
1418         struct sk_buff *skb;
1419         struct hci_command_hdr *cmd;
1420         const u8 *cmd_param;
1421         struct hci_event_hdr *evt = NULL;
1422         const u8 *evt_param = NULL;
1423         int remain = fw->size - (*fw_ptr - fw->data);
1424
1425         /* The first byte indicates the types of the patch command or event.
1426          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1427          * in the current firmware buffer doesn't start with 0x01 or
1428          * the size of remain buffer is smaller than HCI command header,
1429          * the firmware file is corrupted and it should stop the patching
1430          * process.
1431          */
1432         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1433                 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name);
1434                 return -EINVAL;
1435         }
1436         (*fw_ptr)++;
1437         remain--;
1438
1439         cmd = (struct hci_command_hdr *)(*fw_ptr);
1440         *fw_ptr += sizeof(*cmd);
1441         remain -= sizeof(*cmd);
1442
1443         /* Ensure that the remain firmware data is long enough than the length
1444          * of command parameter. If not, the firmware file is corrupted.
1445          */
1446         if (remain < cmd->plen) {
1447                 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name);
1448                 return -EFAULT;
1449         }
1450
1451         /* If there is a command that loads a patch in the firmware
1452          * file, then enable the patch upon success, otherwise just
1453          * disable the manufacturer mode, for example patch activation
1454          * is not required when the default firmware patch file is used
1455          * because there are no patch data to load.
1456          */
1457         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1458                 *disable_patch = 0;
1459
1460         cmd_param = *fw_ptr;
1461         *fw_ptr += cmd->plen;
1462         remain -= cmd->plen;
1463
1464         /* This reads the expected events when the above command is sent to the
1465          * device. Some vendor commands expects more than one events, for
1466          * example command status event followed by vendor specific event.
1467          * For this case, it only keeps the last expected event. so the command
1468          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1469          * last expected event.
1470          */
1471         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1472                 (*fw_ptr)++;
1473                 remain--;
1474
1475                 evt = (struct hci_event_hdr *)(*fw_ptr);
1476                 *fw_ptr += sizeof(*evt);
1477                 remain -= sizeof(*evt);
1478
1479                 if (remain < evt->plen) {
1480                         BT_ERR("%s Intel fw corrupted: invalid evt len",
1481                                hdev->name);
1482                         return -EFAULT;
1483                 }
1484
1485                 evt_param = *fw_ptr;
1486                 *fw_ptr += evt->plen;
1487                 remain -= evt->plen;
1488         }
1489
1490         /* Every HCI commands in the firmware file has its correspond event.
1491          * If event is not found or remain is smaller than zero, the firmware
1492          * file is corrupted.
1493          */
1494         if (!evt || !evt_param || remain < 0) {
1495                 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name);
1496                 return -EFAULT;
1497         }
1498
1499         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1500                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1501         if (IS_ERR(skb)) {
1502                 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)",
1503                        hdev->name, cmd->opcode, PTR_ERR(skb));
1504                 return PTR_ERR(skb);
1505         }
1506
1507         /* It ensures that the returned event matches the event data read from
1508          * the firmware file. At fist, it checks the length and then
1509          * the contents of the event.
1510          */
1511         if (skb->len != evt->plen) {
1512                 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name,
1513                        le16_to_cpu(cmd->opcode));
1514                 kfree_skb(skb);
1515                 return -EFAULT;
1516         }
1517
1518         if (memcmp(skb->data, evt_param, evt->plen)) {
1519                 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)",
1520                        hdev->name, le16_to_cpu(cmd->opcode));
1521                 kfree_skb(skb);
1522                 return -EFAULT;
1523         }
1524         kfree_skb(skb);
1525
1526         return 0;
1527 }
1528
1529 static int btusb_setup_intel(struct hci_dev *hdev)
1530 {
1531         struct sk_buff *skb;
1532         const struct firmware *fw;
1533         const u8 *fw_ptr;
1534         int disable_patch;
1535         struct intel_version *ver;
1536
1537         const u8 mfg_enable[] = { 0x01, 0x00 };
1538         const u8 mfg_disable[] = { 0x00, 0x00 };
1539         const u8 mfg_reset_deactivate[] = { 0x00, 0x01 };
1540         const u8 mfg_reset_activate[] = { 0x00, 0x02 };
1541
1542         BT_DBG("%s", hdev->name);
1543
1544         /* The controller has a bug with the first HCI command sent to it
1545          * returning number of completed commands as zero. This would stall the
1546          * command processing in the Bluetooth core.
1547          *
1548          * As a workaround, send HCI Reset command first which will reset the
1549          * number of completed commands and allow normal command processing
1550          * from now on.
1551          */
1552         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1553         if (IS_ERR(skb)) {
1554                 BT_ERR("%s sending initial HCI reset command failed (%ld)",
1555                        hdev->name, PTR_ERR(skb));
1556                 return PTR_ERR(skb);
1557         }
1558         kfree_skb(skb);
1559
1560         /* Read Intel specific controller version first to allow selection of
1561          * which firmware file to load.
1562          *
1563          * The returned information are hardware variant and revision plus
1564          * firmware variant, revision and build number.
1565          */
1566         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1567         if (IS_ERR(skb)) {
1568                 BT_ERR("%s reading Intel fw version command failed (%ld)",
1569                        hdev->name, PTR_ERR(skb));
1570                 return PTR_ERR(skb);
1571         }
1572
1573         if (skb->len != sizeof(*ver)) {
1574                 BT_ERR("%s Intel version event length mismatch", hdev->name);
1575                 kfree_skb(skb);
1576                 return -EIO;
1577         }
1578
1579         ver = (struct intel_version *)skb->data;
1580         if (ver->status) {
1581                 BT_ERR("%s Intel fw version event failed (%02x)", hdev->name,
1582                        ver->status);
1583                 kfree_skb(skb);
1584                 return -bt_to_errno(ver->status);
1585         }
1586
1587         BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1588                 hdev->name, ver->hw_platform, ver->hw_variant,
1589                 ver->hw_revision, ver->fw_variant,  ver->fw_revision,
1590                 ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy,
1591                 ver->fw_patch_num);
1592
1593         /* fw_patch_num indicates the version of patch the device currently
1594          * have. If there is no patch data in the device, it is always 0x00.
1595          * So, if it is other than 0x00, no need to patch the deivce again.
1596          */
1597         if (ver->fw_patch_num) {
1598                 BT_INFO("%s: Intel device is already patched. patch num: %02x",
1599                         hdev->name, ver->fw_patch_num);
1600                 kfree_skb(skb);
1601                 btintel_check_bdaddr(hdev);
1602                 return 0;
1603         }
1604
1605         /* Opens the firmware patch file based on the firmware version read
1606          * from the controller. If it fails to open the matching firmware
1607          * patch file, it tries to open the default firmware patch file.
1608          * If no patch file is found, allow the device to operate without
1609          * a patch.
1610          */
1611         fw = btusb_setup_intel_get_fw(hdev, ver);
1612         if (!fw) {
1613                 kfree_skb(skb);
1614                 btintel_check_bdaddr(hdev);
1615                 return 0;
1616         }
1617         fw_ptr = fw->data;
1618
1619         /* This Intel specific command enables the manufacturer mode of the
1620          * controller.
1621          *
1622          * Only while this mode is enabled, the driver can download the
1623          * firmware patch data and configuration parameters.
1624          */
1625         skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT);
1626         if (IS_ERR(skb)) {
1627                 BT_ERR("%s entering Intel manufacturer mode failed (%ld)",
1628                        hdev->name, PTR_ERR(skb));
1629                 release_firmware(fw);
1630                 return PTR_ERR(skb);
1631         }
1632
1633         if (skb->data[0]) {
1634                 u8 evt_status = skb->data[0];
1635
1636                 BT_ERR("%s enable Intel manufacturer mode event failed (%02x)",
1637                        hdev->name, evt_status);
1638                 kfree_skb(skb);
1639                 release_firmware(fw);
1640                 return -bt_to_errno(evt_status);
1641         }
1642         kfree_skb(skb);
1643
1644         disable_patch = 1;
1645
1646         /* The firmware data file consists of list of Intel specific HCI
1647          * commands and its expected events. The first byte indicates the
1648          * type of the message, either HCI command or HCI event.
1649          *
1650          * It reads the command and its expected event from the firmware file,
1651          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1652          * the returned event is compared with the event read from the firmware
1653          * file and it will continue until all the messages are downloaded to
1654          * the controller.
1655          *
1656          * Once the firmware patching is completed successfully,
1657          * the manufacturer mode is disabled with reset and activating the
1658          * downloaded patch.
1659          *
1660          * If the firmware patching fails, the manufacturer mode is
1661          * disabled with reset and deactivating the patch.
1662          *
1663          * If the default patch file is used, no reset is done when disabling
1664          * the manufacturer.
1665          */
1666         while (fw->size > fw_ptr - fw->data) {
1667                 int ret;
1668
1669                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1670                                                  &disable_patch);
1671                 if (ret < 0)
1672                         goto exit_mfg_deactivate;
1673         }
1674
1675         release_firmware(fw);
1676
1677         if (disable_patch)
1678                 goto exit_mfg_disable;
1679
1680         /* Patching completed successfully and disable the manufacturer mode
1681          * with reset and activate the downloaded firmware patches.
1682          */
1683         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate),
1684                              mfg_reset_activate, HCI_INIT_TIMEOUT);
1685         if (IS_ERR(skb)) {
1686                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1687                        hdev->name, PTR_ERR(skb));
1688                 return PTR_ERR(skb);
1689         }
1690         kfree_skb(skb);
1691
1692         BT_INFO("%s: Intel Bluetooth firmware patch completed and activated",
1693                 hdev->name);
1694
1695         btintel_check_bdaddr(hdev);
1696         return 0;
1697
1698 exit_mfg_disable:
1699         /* Disable the manufacturer mode without reset */
1700         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable,
1701                              HCI_INIT_TIMEOUT);
1702         if (IS_ERR(skb)) {
1703                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1704                        hdev->name, PTR_ERR(skb));
1705                 return PTR_ERR(skb);
1706         }
1707         kfree_skb(skb);
1708
1709         BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name);
1710
1711         btintel_check_bdaddr(hdev);
1712         return 0;
1713
1714 exit_mfg_deactivate:
1715         release_firmware(fw);
1716
1717         /* Patching failed. Disable the manufacturer mode with reset and
1718          * deactivate the downloaded firmware patches.
1719          */
1720         skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate),
1721                              mfg_reset_deactivate, HCI_INIT_TIMEOUT);
1722         if (IS_ERR(skb)) {
1723                 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)",
1724                        hdev->name, PTR_ERR(skb));
1725                 return PTR_ERR(skb);
1726         }
1727         kfree_skb(skb);
1728
1729         BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated",
1730                 hdev->name);
1731
1732         btintel_check_bdaddr(hdev);
1733         return 0;
1734 }
1735
1736 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
1737 {
1738         struct sk_buff *skb;
1739         struct hci_event_hdr *hdr;
1740         struct hci_ev_cmd_complete *evt;
1741
1742         skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_ATOMIC);
1743         if (!skb)
1744                 return -ENOMEM;
1745
1746         hdr = (struct hci_event_hdr *)skb_put(skb, sizeof(*hdr));
1747         hdr->evt = HCI_EV_CMD_COMPLETE;
1748         hdr->plen = sizeof(*evt) + 1;
1749
1750         evt = (struct hci_ev_cmd_complete *)skb_put(skb, sizeof(*evt));
1751         evt->ncmd = 0x01;
1752         evt->opcode = cpu_to_le16(opcode);
1753
1754         *skb_put(skb, 1) = 0x00;
1755
1756         bt_cb(skb)->pkt_type = HCI_EVENT_PKT;
1757
1758         return hci_recv_frame(hdev, skb);
1759 }
1760
1761 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
1762                                  int count)
1763 {
1764         /* When the device is in bootloader mode, then it can send
1765          * events via the bulk endpoint. These events are treated the
1766          * same way as the ones received from the interrupt endpoint.
1767          */
1768         if (test_bit(BTUSB_BOOTLOADER, &data->flags))
1769                 return btusb_recv_intr(data, buffer, count);
1770
1771         return btusb_recv_bulk(data, buffer, count);
1772 }
1773
1774 static void btusb_intel_bootup(struct btusb_data *data, const void *ptr,
1775                                unsigned int len)
1776 {
1777         const struct intel_bootup *evt = ptr;
1778
1779         if (len != sizeof(*evt))
1780                 return;
1781
1782         if (test_and_clear_bit(BTUSB_BOOTING, &data->flags)) {
1783                 smp_mb__after_atomic();
1784                 wake_up_bit(&data->flags, BTUSB_BOOTING);
1785         }
1786 }
1787
1788 static void btusb_intel_secure_send_result(struct btusb_data *data,
1789                                            const void *ptr, unsigned int len)
1790 {
1791         const struct intel_secure_send_result *evt = ptr;
1792
1793         if (len != sizeof(*evt))
1794                 return;
1795
1796         if (evt->result)
1797                 set_bit(BTUSB_FIRMWARE_FAILED, &data->flags);
1798
1799         if (test_and_clear_bit(BTUSB_DOWNLOADING, &data->flags) &&
1800             test_bit(BTUSB_FIRMWARE_LOADED, &data->flags)) {
1801                 smp_mb__after_atomic();
1802                 wake_up_bit(&data->flags, BTUSB_DOWNLOADING);
1803         }
1804 }
1805
1806 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
1807 {
1808         struct btusb_data *data = hci_get_drvdata(hdev);
1809
1810         if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1811                 struct hci_event_hdr *hdr = (void *)skb->data;
1812
1813                 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
1814                     hdr->plen > 0) {
1815                         const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
1816                         unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
1817
1818                         switch (skb->data[2]) {
1819                         case 0x02:
1820                                 /* When switching to the operational firmware
1821                                  * the device sends a vendor specific event
1822                                  * indicating that the bootup completed.
1823                                  */
1824                                 btusb_intel_bootup(data, ptr, len);
1825                                 break;
1826                         case 0x06:
1827                                 /* When the firmware loading completes the
1828                                  * device sends out a vendor specific event
1829                                  * indicating the result of the firmware
1830                                  * loading.
1831                                  */
1832                                 btusb_intel_secure_send_result(data, ptr, len);
1833                                 break;
1834                         }
1835                 }
1836         }
1837
1838         return hci_recv_frame(hdev, skb);
1839 }
1840
1841 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
1842 {
1843         struct btusb_data *data = hci_get_drvdata(hdev);
1844         struct urb *urb;
1845
1846         BT_DBG("%s", hdev->name);
1847
1848         if (!test_bit(HCI_RUNNING, &hdev->flags))
1849                 return -EBUSY;
1850
1851         switch (bt_cb(skb)->pkt_type) {
1852         case HCI_COMMAND_PKT:
1853                 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1854                         struct hci_command_hdr *cmd = (void *)skb->data;
1855                         __u16 opcode = le16_to_cpu(cmd->opcode);
1856
1857                         /* When in bootloader mode and the command 0xfc09
1858                          * is received, it needs to be send down the
1859                          * bulk endpoint. So allocate a bulk URB instead.
1860                          */
1861                         if (opcode == 0xfc09)
1862                                 urb = alloc_bulk_urb(hdev, skb);
1863                         else
1864                                 urb = alloc_ctrl_urb(hdev, skb);
1865
1866                         /* When the 0xfc01 command is issued to boot into
1867                          * the operational firmware, it will actually not
1868                          * send a command complete event. To keep the flow
1869                          * control working inject that event here.
1870                          */
1871                         if (opcode == 0xfc01)
1872                                 inject_cmd_complete(hdev, opcode);
1873                 } else {
1874                         urb = alloc_ctrl_urb(hdev, skb);
1875                 }
1876                 if (IS_ERR(urb))
1877                         return PTR_ERR(urb);
1878
1879                 hdev->stat.cmd_tx++;
1880                 return submit_or_queue_tx_urb(hdev, urb);
1881
1882         case HCI_ACLDATA_PKT:
1883                 urb = alloc_bulk_urb(hdev, skb);
1884                 if (IS_ERR(urb))
1885                         return PTR_ERR(urb);
1886
1887                 hdev->stat.acl_tx++;
1888                 return submit_or_queue_tx_urb(hdev, urb);
1889
1890         case HCI_SCODATA_PKT:
1891                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1892                         return -ENODEV;
1893
1894                 urb = alloc_isoc_urb(hdev, skb);
1895                 if (IS_ERR(urb))
1896                         return PTR_ERR(urb);
1897
1898                 hdev->stat.sco_tx++;
1899                 return submit_tx_urb(hdev, urb);
1900         }
1901
1902         return -EILSEQ;
1903 }
1904
1905 static int btusb_intel_secure_send(struct hci_dev *hdev, u8 fragment_type,
1906                                    u32 plen, const void *param)
1907 {
1908         while (plen > 0) {
1909                 struct sk_buff *skb;
1910                 u8 cmd_param[253], fragment_len = (plen > 252) ? 252 : plen;
1911
1912                 cmd_param[0] = fragment_type;
1913                 memcpy(cmd_param + 1, param, fragment_len);
1914
1915                 skb = __hci_cmd_sync(hdev, 0xfc09, fragment_len + 1,
1916                                      cmd_param, HCI_INIT_TIMEOUT);
1917                 if (IS_ERR(skb))
1918                         return PTR_ERR(skb);
1919
1920                 kfree_skb(skb);
1921
1922                 plen -= fragment_len;
1923                 param += fragment_len;
1924         }
1925
1926         return 0;
1927 }
1928
1929 static void btusb_intel_version_info(struct hci_dev *hdev,
1930                                      struct intel_version *ver)
1931 {
1932         const char *variant;
1933
1934         switch (ver->fw_variant) {
1935         case 0x06:
1936                 variant = "Bootloader";
1937                 break;
1938         case 0x23:
1939                 variant = "Firmware";
1940                 break;
1941         default:
1942                 return;
1943         }
1944
1945         BT_INFO("%s: %s revision %u.%u build %u week %u %u", hdev->name,
1946                 variant, ver->fw_revision >> 4, ver->fw_revision & 0x0f,
1947                 ver->fw_build_num, ver->fw_build_ww, 2000 + ver->fw_build_yy);
1948 }
1949
1950 static int btusb_setup_intel_new(struct hci_dev *hdev)
1951 {
1952         static const u8 reset_param[] = { 0x00, 0x01, 0x00, 0x01,
1953                                           0x00, 0x08, 0x04, 0x00 };
1954         struct btusb_data *data = hci_get_drvdata(hdev);
1955         struct sk_buff *skb;
1956         struct intel_version *ver;
1957         struct intel_boot_params *params;
1958         const struct firmware *fw;
1959         const u8 *fw_ptr;
1960         char fwname[64];
1961         ktime_t calltime, delta, rettime;
1962         unsigned long long duration;
1963         int err;
1964
1965         BT_DBG("%s", hdev->name);
1966
1967         calltime = ktime_get();
1968
1969         /* Read the Intel version information to determine if the device
1970          * is in bootloader mode or if it already has operational firmware
1971          * loaded.
1972          */
1973         skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT);
1974         if (IS_ERR(skb)) {
1975                 BT_ERR("%s: Reading Intel version information failed (%ld)",
1976                        hdev->name, PTR_ERR(skb));
1977                 return PTR_ERR(skb);
1978         }
1979
1980         if (skb->len != sizeof(*ver)) {
1981                 BT_ERR("%s: Intel version event size mismatch", hdev->name);
1982                 kfree_skb(skb);
1983                 return -EILSEQ;
1984         }
1985
1986         ver = (struct intel_version *)skb->data;
1987         if (ver->status) {
1988                 BT_ERR("%s: Intel version command failure (%02x)",
1989                        hdev->name, ver->status);
1990                 err = -bt_to_errno(ver->status);
1991                 kfree_skb(skb);
1992                 return err;
1993         }
1994
1995         /* The hardware platform number has a fixed value of 0x37 and
1996          * for now only accept this single value.
1997          */
1998         if (ver->hw_platform != 0x37) {
1999                 BT_ERR("%s: Unsupported Intel hardware platform (%u)",
2000                        hdev->name, ver->hw_platform);
2001                 kfree_skb(skb);
2002                 return -EINVAL;
2003         }
2004
2005         /* At the moment only the hardware variant iBT 3.0 (LnP/SfP) is
2006          * supported by this firmware loading method. This check has been
2007          * put in place to ensure correct forward compatibility options
2008          * when newer hardware variants come along.
2009          */
2010         if (ver->hw_variant != 0x0b) {
2011                 BT_ERR("%s: Unsupported Intel hardware variant (%u)",
2012                        hdev->name, ver->hw_variant);
2013                 kfree_skb(skb);
2014                 return -EINVAL;
2015         }
2016
2017         btusb_intel_version_info(hdev, ver);
2018
2019         /* The firmware variant determines if the device is in bootloader
2020          * mode or is running operational firmware. The value 0x06 identifies
2021          * the bootloader and the value 0x23 identifies the operational
2022          * firmware.
2023          *
2024          * When the operational firmware is already present, then only
2025          * the check for valid Bluetooth device address is needed. This
2026          * determines if the device will be added as configured or
2027          * unconfigured controller.
2028          *
2029          * It is not possible to use the Secure Boot Parameters in this
2030          * case since that command is only available in bootloader mode.
2031          */
2032         if (ver->fw_variant == 0x23) {
2033                 kfree_skb(skb);
2034                 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2035                 btintel_check_bdaddr(hdev);
2036                 return 0;
2037         }
2038
2039         /* If the device is not in bootloader mode, then the only possible
2040          * choice is to return an error and abort the device initialization.
2041          */
2042         if (ver->fw_variant != 0x06) {
2043                 BT_ERR("%s: Unsupported Intel firmware variant (%u)",
2044                        hdev->name, ver->fw_variant);
2045                 kfree_skb(skb);
2046                 return -ENODEV;
2047         }
2048
2049         kfree_skb(skb);
2050
2051         /* Read the secure boot parameters to identify the operating
2052          * details of the bootloader.
2053          */
2054         skb = __hci_cmd_sync(hdev, 0xfc0d, 0, NULL, HCI_INIT_TIMEOUT);
2055         if (IS_ERR(skb)) {
2056                 BT_ERR("%s: Reading Intel boot parameters failed (%ld)",
2057                        hdev->name, PTR_ERR(skb));
2058                 return PTR_ERR(skb);
2059         }
2060
2061         if (skb->len != sizeof(*params)) {
2062                 BT_ERR("%s: Intel boot parameters size mismatch", hdev->name);
2063                 kfree_skb(skb);
2064                 return -EILSEQ;
2065         }
2066
2067         params = (struct intel_boot_params *)skb->data;
2068         if (params->status) {
2069                 BT_ERR("%s: Intel boot parameters command failure (%02x)",
2070                        hdev->name, params->status);
2071                 err = -bt_to_errno(params->status);
2072                 kfree_skb(skb);
2073                 return err;
2074         }
2075
2076         BT_INFO("%s: Device revision is %u", hdev->name,
2077                 le16_to_cpu(params->dev_revid));
2078
2079         BT_INFO("%s: Secure boot is %s", hdev->name,
2080                 params->secure_boot ? "enabled" : "disabled");
2081
2082         BT_INFO("%s: Minimum firmware build %u week %u %u", hdev->name,
2083                 params->min_fw_build_nn, params->min_fw_build_cw,
2084                 2000 + params->min_fw_build_yy);
2085
2086         /* It is required that every single firmware fragment is acknowledged
2087          * with a command complete event. If the boot parameters indicate
2088          * that this bootloader does not send them, then abort the setup.
2089          */
2090         if (params->limited_cce != 0x00) {
2091                 BT_ERR("%s: Unsupported Intel firmware loading method (%u)",
2092                        hdev->name, params->limited_cce);
2093                 kfree_skb(skb);
2094                 return -EINVAL;
2095         }
2096
2097         /* If the OTP has no valid Bluetooth device address, then there will
2098          * also be no valid address for the operational firmware.
2099          */
2100         if (!bacmp(&params->otp_bdaddr, BDADDR_ANY)) {
2101                 BT_INFO("%s: No device address configured", hdev->name);
2102                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2103         }
2104
2105         /* With this Intel bootloader only the hardware variant and device
2106          * revision information are used to select the right firmware.
2107          *
2108          * Currently this bootloader support is limited to hardware variant
2109          * iBT 3.0 (LnP/SfP) which is identified by the value 11 (0x0b).
2110          */
2111         snprintf(fwname, sizeof(fwname), "intel/ibt-11-%u.sfi",
2112                  le16_to_cpu(params->dev_revid));
2113
2114         err = request_firmware(&fw, fwname, &hdev->dev);
2115         if (err < 0) {
2116                 BT_ERR("%s: Failed to load Intel firmware file (%d)",
2117                        hdev->name, err);
2118                 kfree_skb(skb);
2119                 return err;
2120         }
2121
2122         BT_INFO("%s: Found device firmware: %s", hdev->name, fwname);
2123
2124         kfree_skb(skb);
2125
2126         if (fw->size < 644) {
2127                 BT_ERR("%s: Invalid size of firmware file (%zu)",
2128                        hdev->name, fw->size);
2129                 err = -EBADF;
2130                 goto done;
2131         }
2132
2133         set_bit(BTUSB_DOWNLOADING, &data->flags);
2134
2135         /* Start the firmware download transaction with the Init fragment
2136          * represented by the 128 bytes of CSS header.
2137          */
2138         err = btusb_intel_secure_send(hdev, 0x00, 128, fw->data);
2139         if (err < 0) {
2140                 BT_ERR("%s: Failed to send firmware header (%d)",
2141                        hdev->name, err);
2142                 goto done;
2143         }
2144
2145         /* Send the 256 bytes of public key information from the firmware
2146          * as the PKey fragment.
2147          */
2148         err = btusb_intel_secure_send(hdev, 0x03, 256, fw->data + 128);
2149         if (err < 0) {
2150                 BT_ERR("%s: Failed to send firmware public key (%d)",
2151                        hdev->name, err);
2152                 goto done;
2153         }
2154
2155         /* Send the 256 bytes of signature information from the firmware
2156          * as the Sign fragment.
2157          */
2158         err = btusb_intel_secure_send(hdev, 0x02, 256, fw->data + 388);
2159         if (err < 0) {
2160                 BT_ERR("%s: Failed to send firmware signature (%d)",
2161                        hdev->name, err);
2162                 goto done;
2163         }
2164
2165         fw_ptr = fw->data + 644;
2166
2167         while (fw_ptr - fw->data < fw->size) {
2168                 struct hci_command_hdr *cmd = (void *)fw_ptr;
2169                 u8 cmd_len;
2170
2171                 cmd_len = sizeof(*cmd) + cmd->plen;
2172
2173                 /* Send each command from the firmware data buffer as
2174                  * a single Data fragment.
2175                  */
2176                 err = btusb_intel_secure_send(hdev, 0x01, cmd_len, fw_ptr);
2177                 if (err < 0) {
2178                         BT_ERR("%s: Failed to send firmware data (%d)",
2179                                hdev->name, err);
2180                         goto done;
2181                 }
2182
2183                 fw_ptr += cmd_len;
2184         }
2185
2186         set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2187
2188         BT_INFO("%s: Waiting for firmware download to complete", hdev->name);
2189
2190         /* Before switching the device into operational mode and with that
2191          * booting the loaded firmware, wait for the bootloader notification
2192          * that all fragments have been successfully received.
2193          *
2194          * When the event processing receives the notification, then the
2195          * BTUSB_DOWNLOADING flag will be cleared.
2196          *
2197          * The firmware loading should not take longer than 5 seconds
2198          * and thus just timeout if that happens and fail the setup
2199          * of this device.
2200          */
2201         err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
2202                                   TASK_INTERRUPTIBLE,
2203                                   msecs_to_jiffies(5000));
2204         if (err == 1) {
2205                 BT_ERR("%s: Firmware loading interrupted", hdev->name);
2206                 err = -EINTR;
2207                 goto done;
2208         }
2209
2210         if (err) {
2211                 BT_ERR("%s: Firmware loading timeout", hdev->name);
2212                 err = -ETIMEDOUT;
2213                 goto done;
2214         }
2215
2216         if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) {
2217                 BT_ERR("%s: Firmware loading failed", hdev->name);
2218                 err = -ENOEXEC;
2219                 goto done;
2220         }
2221
2222         rettime = ktime_get();
2223         delta = ktime_sub(rettime, calltime);
2224         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2225
2226         BT_INFO("%s: Firmware loaded in %llu usecs", hdev->name, duration);
2227
2228 done:
2229         release_firmware(fw);
2230
2231         if (err < 0)
2232                 return err;
2233
2234         calltime = ktime_get();
2235
2236         set_bit(BTUSB_BOOTING, &data->flags);
2237
2238         skb = __hci_cmd_sync(hdev, 0xfc01, sizeof(reset_param), reset_param,
2239                              HCI_INIT_TIMEOUT);
2240         if (IS_ERR(skb))
2241                 return PTR_ERR(skb);
2242
2243         kfree_skb(skb);
2244
2245         /* The bootloader will not indicate when the device is ready. This
2246          * is done by the operational firmware sending bootup notification.
2247          *
2248          * Booting into operational firmware should not take longer than
2249          * 1 second. However if that happens, then just fail the setup
2250          * since something went wrong.
2251          */
2252         BT_INFO("%s: Waiting for device to boot", hdev->name);
2253
2254         err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING,
2255                                   TASK_INTERRUPTIBLE,
2256                                   msecs_to_jiffies(1000));
2257
2258         if (err == 1) {
2259                 BT_ERR("%s: Device boot interrupted", hdev->name);
2260                 return -EINTR;
2261         }
2262
2263         if (err) {
2264                 BT_ERR("%s: Device boot timeout", hdev->name);
2265                 return -ETIMEDOUT;
2266         }
2267
2268         rettime = ktime_get();
2269         delta = ktime_sub(rettime, calltime);
2270         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2271
2272         BT_INFO("%s: Device booted in %llu usecs", hdev->name, duration);
2273
2274         clear_bit(BTUSB_BOOTLOADER, &data->flags);
2275
2276         return 0;
2277 }
2278
2279 static void btusb_hw_error_intel(struct hci_dev *hdev, u8 code)
2280 {
2281         struct sk_buff *skb;
2282         u8 type = 0x00;
2283
2284         BT_ERR("%s: Hardware error 0x%2.2x", hdev->name, code);
2285
2286         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2287         if (IS_ERR(skb)) {
2288                 BT_ERR("%s: Reset after hardware error failed (%ld)",
2289                        hdev->name, PTR_ERR(skb));
2290                 return;
2291         }
2292         kfree_skb(skb);
2293
2294         skb = __hci_cmd_sync(hdev, 0xfc22, 1, &type, HCI_INIT_TIMEOUT);
2295         if (IS_ERR(skb)) {
2296                 BT_ERR("%s: Retrieving Intel exception info failed (%ld)",
2297                        hdev->name, PTR_ERR(skb));
2298                 return;
2299         }
2300
2301         if (skb->len != 13) {
2302                 BT_ERR("%s: Exception info size mismatch", hdev->name);
2303                 kfree_skb(skb);
2304                 return;
2305         }
2306
2307         if (skb->data[0] != 0x00) {
2308                 BT_ERR("%s: Exception info command failure (%02x)",
2309                        hdev->name, skb->data[0]);
2310                 kfree_skb(skb);
2311                 return;
2312         }
2313
2314         BT_ERR("%s: Exception info %s", hdev->name, (char *)(skb->data + 1));
2315
2316         kfree_skb(skb);
2317 }
2318
2319 static int btusb_shutdown_intel(struct hci_dev *hdev)
2320 {
2321         struct sk_buff *skb;
2322         long ret;
2323
2324         /* Some platforms have an issue with BT LED when the interface is
2325          * down or BT radio is turned off, which takes 5 seconds to BT LED
2326          * goes off. This command turns off the BT LED immediately.
2327          */
2328         skb = __hci_cmd_sync(hdev, 0xfc3f, 0, NULL, HCI_INIT_TIMEOUT);
2329         if (IS_ERR(skb)) {
2330                 ret = PTR_ERR(skb);
2331                 BT_ERR("%s: turning off Intel device LED failed (%ld)",
2332                        hdev->name, ret);
2333                 return ret;
2334         }
2335         kfree_skb(skb);
2336
2337         return 0;
2338 }
2339
2340 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
2341                                     const bdaddr_t *bdaddr)
2342 {
2343         struct sk_buff *skb;
2344         u8 buf[8];
2345         long ret;
2346
2347         buf[0] = 0xfe;
2348         buf[1] = sizeof(bdaddr_t);
2349         memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
2350
2351         skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2352         if (IS_ERR(skb)) {
2353                 ret = PTR_ERR(skb);
2354                 BT_ERR("%s: changing Marvell device address failed (%ld)",
2355                        hdev->name, ret);
2356                 return ret;
2357         }
2358         kfree_skb(skb);
2359
2360         return 0;
2361 }
2362
2363 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
2364                                     const bdaddr_t *bdaddr)
2365 {
2366         struct sk_buff *skb;
2367         u8 buf[10];
2368         long ret;
2369
2370         buf[0] = 0x01;
2371         buf[1] = 0x01;
2372         buf[2] = 0x00;
2373         buf[3] = sizeof(bdaddr_t);
2374         memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
2375
2376         skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2377         if (IS_ERR(skb)) {
2378                 ret = PTR_ERR(skb);
2379                 BT_ERR("%s: Change address command failed (%ld)",
2380                        hdev->name, ret);
2381                 return ret;
2382         }
2383         kfree_skb(skb);
2384
2385         return 0;
2386 }
2387
2388 #define QCA_DFU_PACKET_LEN      4096
2389
2390 #define QCA_GET_TARGET_VERSION  0x09
2391 #define QCA_CHECK_STATUS        0x05
2392 #define QCA_DFU_DOWNLOAD        0x01
2393
2394 #define QCA_SYSCFG_UPDATED      0x40
2395 #define QCA_PATCH_UPDATED       0x80
2396 #define QCA_DFU_TIMEOUT         3000
2397
2398 struct qca_version {
2399         __le32  rom_version;
2400         __le32  patch_version;
2401         __le32  ram_version;
2402         __le32  ref_clock;
2403         __u8    reserved[4];
2404 } __packed;
2405
2406 struct qca_rampatch_version {
2407         __le16  rom_version;
2408         __le16  patch_version;
2409 } __packed;
2410
2411 struct qca_device_info {
2412         u32     rom_version;
2413         u8      rampatch_hdr;   /* length of header in rampatch */
2414         u8      nvm_hdr;        /* length of header in NVM */
2415         u8      ver_offset;     /* offset of version structure in rampatch */
2416 };
2417
2418 static const struct qca_device_info qca_devices_table[] = {
2419         { 0x00000100, 20, 4, 10 }, /* Rome 1.0 */
2420         { 0x00000101, 20, 4, 10 }, /* Rome 1.1 */
2421         { 0x00000201, 28, 4, 18 }, /* Rome 2.1 */
2422         { 0x00000300, 28, 4, 18 }, /* Rome 3.0 */
2423         { 0x00000302, 28, 4, 18 }, /* Rome 3.2 */
2424 };
2425
2426 static int btusb_qca_send_vendor_req(struct hci_dev *hdev, u8 request,
2427                                      void *data, u16 size)
2428 {
2429         struct btusb_data *btdata = hci_get_drvdata(hdev);
2430         struct usb_device *udev = btdata->udev;
2431         int pipe, err;
2432         u8 *buf;
2433
2434         buf = kmalloc(size, GFP_KERNEL);
2435         if (!buf)
2436                 return -ENOMEM;
2437
2438         /* Found some of USB hosts have IOT issues with ours so that we should
2439          * not wait until HCI layer is ready.
2440          */
2441         pipe = usb_rcvctrlpipe(udev, 0);
2442         err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
2443                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2444         if (err < 0) {
2445                 BT_ERR("%s: Failed to access otp area (%d)", hdev->name, err);
2446                 goto done;
2447         }
2448
2449         memcpy(data, buf, size);
2450
2451 done:
2452         kfree(buf);
2453
2454         return err;
2455 }
2456
2457 static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
2458                                        const struct firmware *firmware,
2459                                        size_t hdr_size)
2460 {
2461         struct btusb_data *btdata = hci_get_drvdata(hdev);
2462         struct usb_device *udev = btdata->udev;
2463         size_t count, size, sent = 0;
2464         int pipe, len, err;
2465         u8 *buf;
2466
2467         buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
2468         if (!buf)
2469                 return -ENOMEM;
2470
2471         count = firmware->size;
2472
2473         size = min_t(size_t, count, hdr_size);
2474         memcpy(buf, firmware->data, size);
2475
2476         /* USB patches should go down to controller through USB path
2477          * because binary format fits to go down through USB channel.
2478          * USB control path is for patching headers and USB bulk is for
2479          * patch body.
2480          */
2481         pipe = usb_sndctrlpipe(udev, 0);
2482         err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
2483                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2484         if (err < 0) {
2485                 BT_ERR("%s: Failed to send headers (%d)", hdev->name, err);
2486                 goto done;
2487         }
2488
2489         sent += size;
2490         count -= size;
2491
2492         while (count) {
2493                 size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
2494
2495                 memcpy(buf, firmware->data + sent, size);
2496
2497                 pipe = usb_sndbulkpipe(udev, 0x02);
2498                 err = usb_bulk_msg(udev, pipe, buf, size, &len,
2499                                    QCA_DFU_TIMEOUT);
2500                 if (err < 0) {
2501                         BT_ERR("%s: Failed to send body at %zd of %zd (%d)",
2502                                hdev->name, sent, firmware->size, err);
2503                         break;
2504                 }
2505
2506                 if (size != len) {
2507                         BT_ERR("%s: Failed to get bulk buffer", hdev->name);
2508                         err = -EILSEQ;
2509                         break;
2510                 }
2511
2512                 sent  += size;
2513                 count -= size;
2514         }
2515
2516 done:
2517         kfree(buf);
2518         return err;
2519 }
2520
2521 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
2522                                          struct qca_version *ver,
2523                                          const struct qca_device_info *info)
2524 {
2525         struct qca_rampatch_version *rver;
2526         const struct firmware *fw;
2527         u32 ver_rom, ver_patch;
2528         u16 rver_rom, rver_patch;
2529         char fwname[64];
2530         int err;
2531
2532         ver_rom = le32_to_cpu(ver->rom_version);
2533         ver_patch = le32_to_cpu(ver->patch_version);
2534
2535         snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom);
2536
2537         err = request_firmware(&fw, fwname, &hdev->dev);
2538         if (err) {
2539                 BT_ERR("%s: failed to request rampatch file: %s (%d)",
2540                        hdev->name, fwname, err);
2541                 return err;
2542         }
2543
2544         BT_INFO("%s: using rampatch file: %s", hdev->name, fwname);
2545
2546         rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
2547         rver_rom = le16_to_cpu(rver->rom_version);
2548         rver_patch = le16_to_cpu(rver->patch_version);
2549
2550         BT_INFO("%s: QCA: patch rome 0x%x build 0x%x, firmware rome 0x%x "
2551                 "build 0x%x", hdev->name, rver_rom, rver_patch, ver_rom,
2552                 ver_patch);
2553
2554         if (rver_rom != ver_rom || rver_patch <= ver_patch) {
2555                 BT_ERR("%s: rampatch file version did not match with firmware",
2556                        hdev->name);
2557                 err = -EINVAL;
2558                 goto done;
2559         }
2560
2561         err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
2562
2563 done:
2564         release_firmware(fw);
2565
2566         return err;
2567 }
2568
2569 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
2570                                     struct qca_version *ver,
2571                                     const struct qca_device_info *info)
2572 {
2573         const struct firmware *fw;
2574         char fwname[64];
2575         int err;
2576
2577         snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x.bin",
2578                  le32_to_cpu(ver->rom_version));
2579
2580         err = request_firmware(&fw, fwname, &hdev->dev);
2581         if (err) {
2582                 BT_ERR("%s: failed to request NVM file: %s (%d)",
2583                        hdev->name, fwname, err);
2584                 return err;
2585         }
2586
2587         BT_INFO("%s: using NVM file: %s", hdev->name, fwname);
2588
2589         err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
2590
2591         release_firmware(fw);
2592
2593         return err;
2594 }
2595
2596 static int btusb_setup_qca(struct hci_dev *hdev)
2597 {
2598         const struct qca_device_info *info = NULL;
2599         struct qca_version ver;
2600         u32 ver_rom;
2601         u8 status;
2602         int i, err;
2603
2604         err = btusb_qca_send_vendor_req(hdev, QCA_GET_TARGET_VERSION, &ver,
2605                                         sizeof(ver));
2606         if (err < 0)
2607                 return err;
2608
2609         ver_rom = le32_to_cpu(ver.rom_version);
2610         for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
2611                 if (ver_rom == qca_devices_table[i].rom_version)
2612                         info = &qca_devices_table[i];
2613         }
2614         if (!info) {
2615                 BT_ERR("%s: don't support firmware rome 0x%x", hdev->name,
2616                        ver_rom);
2617                 return -ENODEV;
2618         }
2619
2620         err = btusb_qca_send_vendor_req(hdev, QCA_CHECK_STATUS, &status,
2621                                         sizeof(status));
2622         if (err < 0)
2623                 return err;
2624
2625         if (!(status & QCA_PATCH_UPDATED)) {
2626                 err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
2627                 if (err < 0)
2628                         return err;
2629         }
2630
2631         if (!(status & QCA_SYSCFG_UPDATED)) {
2632                 err = btusb_setup_qca_load_nvm(hdev, &ver, info);
2633                 if (err < 0)
2634                         return err;
2635         }
2636
2637         return 0;
2638 }
2639
2640 static int btusb_probe(struct usb_interface *intf,
2641                        const struct usb_device_id *id)
2642 {
2643         struct usb_endpoint_descriptor *ep_desc;
2644         struct btusb_data *data;
2645         struct hci_dev *hdev;
2646         int i, err;
2647
2648         BT_DBG("intf %p id %p", intf, id);
2649
2650         /* interface numbers are hardcoded in the spec */
2651         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
2652                 return -ENODEV;
2653
2654         if (!id->driver_info) {
2655                 const struct usb_device_id *match;
2656
2657                 match = usb_match_id(intf, blacklist_table);
2658                 if (match)
2659                         id = match;
2660         }
2661
2662         if (id->driver_info == BTUSB_IGNORE)
2663                 return -ENODEV;
2664
2665         if (id->driver_info & BTUSB_ATH3012) {
2666                 struct usb_device *udev = interface_to_usbdev(intf);
2667
2668                 /* Old firmware would otherwise let ath3k driver load
2669                  * patch and sysconfig files */
2670                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
2671                         return -ENODEV;
2672         }
2673
2674         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
2675         if (!data)
2676                 return -ENOMEM;
2677
2678         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2679                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2680
2681                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
2682                         data->intr_ep = ep_desc;
2683                         continue;
2684                 }
2685
2686                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
2687                         data->bulk_tx_ep = ep_desc;
2688                         continue;
2689                 }
2690
2691                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
2692                         data->bulk_rx_ep = ep_desc;
2693                         continue;
2694                 }
2695         }
2696
2697         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
2698                 return -ENODEV;
2699
2700         if (id->driver_info & BTUSB_AMP) {
2701                 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
2702                 data->cmdreq = 0x2b;
2703         } else {
2704                 data->cmdreq_type = USB_TYPE_CLASS;
2705                 data->cmdreq = 0x00;
2706         }
2707
2708         data->udev = interface_to_usbdev(intf);
2709         data->intf = intf;
2710
2711         INIT_WORK(&data->work, btusb_work);
2712         INIT_WORK(&data->waker, btusb_waker);
2713         init_usb_anchor(&data->deferred);
2714         init_usb_anchor(&data->tx_anchor);
2715         spin_lock_init(&data->txlock);
2716
2717         init_usb_anchor(&data->intr_anchor);
2718         init_usb_anchor(&data->bulk_anchor);
2719         init_usb_anchor(&data->isoc_anchor);
2720         spin_lock_init(&data->rxlock);
2721
2722         if (id->driver_info & BTUSB_INTEL_NEW) {
2723                 data->recv_event = btusb_recv_event_intel;
2724                 data->recv_bulk = btusb_recv_bulk_intel;
2725                 set_bit(BTUSB_BOOTLOADER, &data->flags);
2726         } else {
2727                 data->recv_event = hci_recv_frame;
2728                 data->recv_bulk = btusb_recv_bulk;
2729         }
2730
2731         hdev = hci_alloc_dev();
2732         if (!hdev)
2733                 return -ENOMEM;
2734
2735         hdev->bus = HCI_USB;
2736         hci_set_drvdata(hdev, data);
2737
2738         if (id->driver_info & BTUSB_AMP)
2739                 hdev->dev_type = HCI_AMP;
2740         else
2741                 hdev->dev_type = HCI_BREDR;
2742
2743         data->hdev = hdev;
2744
2745         SET_HCIDEV_DEV(hdev, &intf->dev);
2746
2747         hdev->open   = btusb_open;
2748         hdev->close  = btusb_close;
2749         hdev->flush  = btusb_flush;
2750         hdev->send   = btusb_send_frame;
2751         hdev->notify = btusb_notify;
2752
2753         if (id->driver_info & BTUSB_BCM92035)
2754                 hdev->setup = btusb_setup_bcm92035;
2755
2756 #ifdef CONFIG_BT_HCIBTUSB_BCM
2757         if (id->driver_info & BTUSB_BCM_PATCHRAM) {
2758                 hdev->setup = btbcm_setup_patchram;
2759                 hdev->set_bdaddr = btbcm_set_bdaddr;
2760         }
2761
2762         if (id->driver_info & BTUSB_BCM_APPLE)
2763                 hdev->setup = btbcm_setup_apple;
2764 #endif
2765
2766         if (id->driver_info & BTUSB_INTEL) {
2767                 hdev->setup = btusb_setup_intel;
2768                 hdev->shutdown = btusb_shutdown_intel;
2769                 hdev->set_bdaddr = btintel_set_bdaddr;
2770                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2771                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
2772         }
2773
2774         if (id->driver_info & BTUSB_INTEL_NEW) {
2775                 hdev->send = btusb_send_frame_intel;
2776                 hdev->setup = btusb_setup_intel_new;
2777                 hdev->hw_error = btusb_hw_error_intel;
2778                 hdev->set_bdaddr = btintel_set_bdaddr;
2779                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2780         }
2781
2782         if (id->driver_info & BTUSB_MARVELL)
2783                 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
2784
2785         if (id->driver_info & BTUSB_SWAVE) {
2786                 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
2787                 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
2788         }
2789
2790         if (id->driver_info & BTUSB_INTEL_BOOT)
2791                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
2792
2793         if (id->driver_info & BTUSB_ATH3012) {
2794                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
2795                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
2796                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
2797         }
2798
2799         if (id->driver_info & BTUSB_QCA_ROME) {
2800                 data->setup_on_usb = btusb_setup_qca;
2801                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
2802         }
2803
2804 #ifdef CONFIG_BT_HCIBTUSB_RTL
2805         if (id->driver_info & BTUSB_REALTEK)
2806                 hdev->setup = btrtl_setup_realtek;
2807 #endif
2808
2809         if (id->driver_info & BTUSB_AMP) {
2810                 /* AMP controllers do not support SCO packets */
2811                 data->isoc = NULL;
2812         } else {
2813                 /* Interface numbers are hardcoded in the specification */
2814                 data->isoc = usb_ifnum_to_if(data->udev, 1);
2815         }
2816
2817         if (!reset)
2818                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2819
2820         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
2821                 if (!disable_scofix)
2822                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
2823         }
2824
2825         if (id->driver_info & BTUSB_BROKEN_ISOC)
2826                 data->isoc = NULL;
2827
2828         if (id->driver_info & BTUSB_DIGIANSWER) {
2829                 data->cmdreq_type = USB_TYPE_VENDOR;
2830                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2831         }
2832
2833         if (id->driver_info & BTUSB_CSR) {
2834                 struct usb_device *udev = data->udev;
2835                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
2836
2837                 /* Old firmware would otherwise execute USB reset */
2838                 if (bcdDevice < 0x117)
2839                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2840
2841                 /* Fake CSR devices with broken commands */
2842                 if (bcdDevice <= 0x100)
2843                         hdev->setup = btusb_setup_csr;
2844
2845                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
2846         }
2847
2848         if (id->driver_info & BTUSB_SNIFFER) {
2849                 struct usb_device *udev = data->udev;
2850
2851                 /* New sniffer firmware has crippled HCI interface */
2852                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
2853                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
2854         }
2855
2856         if (id->driver_info & BTUSB_INTEL_BOOT) {
2857                 /* A bug in the bootloader causes that interrupt interface is
2858                  * only enabled after receiving SetInterface(0, AltSetting=0).
2859                  */
2860                 err = usb_set_interface(data->udev, 0, 0);
2861                 if (err < 0) {
2862                         BT_ERR("failed to set interface 0, alt 0 %d", err);
2863                         hci_free_dev(hdev);
2864                         return err;
2865                 }
2866         }
2867
2868         if (data->isoc) {
2869                 err = usb_driver_claim_interface(&btusb_driver,
2870                                                  data->isoc, data);
2871                 if (err < 0) {
2872                         hci_free_dev(hdev);
2873                         return err;
2874                 }
2875         }
2876
2877         err = hci_register_dev(hdev);
2878         if (err < 0) {
2879                 hci_free_dev(hdev);
2880                 return err;
2881         }
2882
2883         usb_set_intfdata(intf, data);
2884
2885         return 0;
2886 }
2887
2888 static void btusb_disconnect(struct usb_interface *intf)
2889 {
2890         struct btusb_data *data = usb_get_intfdata(intf);
2891         struct hci_dev *hdev;
2892
2893         BT_DBG("intf %p", intf);
2894
2895         if (!data)
2896                 return;
2897
2898         hdev = data->hdev;
2899         usb_set_intfdata(data->intf, NULL);
2900
2901         if (data->isoc)
2902                 usb_set_intfdata(data->isoc, NULL);
2903
2904         hci_unregister_dev(hdev);
2905
2906         if (intf == data->isoc)
2907                 usb_driver_release_interface(&btusb_driver, data->intf);
2908         else if (data->isoc)
2909                 usb_driver_release_interface(&btusb_driver, data->isoc);
2910
2911         hci_free_dev(hdev);
2912 }
2913
2914 #ifdef CONFIG_PM
2915 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
2916 {
2917         struct btusb_data *data = usb_get_intfdata(intf);
2918
2919         BT_DBG("intf %p", intf);
2920
2921         if (data->suspend_count++)
2922                 return 0;
2923
2924         spin_lock_irq(&data->txlock);
2925         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
2926                 set_bit(BTUSB_SUSPENDING, &data->flags);
2927                 spin_unlock_irq(&data->txlock);
2928         } else {
2929                 spin_unlock_irq(&data->txlock);
2930                 data->suspend_count--;
2931                 return -EBUSY;
2932         }
2933
2934         cancel_work_sync(&data->work);
2935
2936         btusb_stop_traffic(data);
2937         usb_kill_anchored_urbs(&data->tx_anchor);
2938
2939         return 0;
2940 }
2941
2942 static void play_deferred(struct btusb_data *data)
2943 {
2944         struct urb *urb;
2945         int err;
2946
2947         while ((urb = usb_get_from_anchor(&data->deferred))) {
2948                 err = usb_submit_urb(urb, GFP_ATOMIC);
2949                 if (err < 0)
2950                         break;
2951
2952                 data->tx_in_flight++;
2953         }
2954         usb_scuttle_anchored_urbs(&data->deferred);
2955 }
2956
2957 static int btusb_resume(struct usb_interface *intf)
2958 {
2959         struct btusb_data *data = usb_get_intfdata(intf);
2960         struct hci_dev *hdev = data->hdev;
2961         int err = 0;
2962
2963         BT_DBG("intf %p", intf);
2964
2965         if (--data->suspend_count)
2966                 return 0;
2967
2968         if (!test_bit(HCI_RUNNING, &hdev->flags))
2969                 goto done;
2970
2971         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
2972                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
2973                 if (err < 0) {
2974                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
2975                         goto failed;
2976                 }
2977         }
2978
2979         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
2980                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
2981                 if (err < 0) {
2982                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
2983                         goto failed;
2984                 }
2985
2986                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
2987         }
2988
2989         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
2990                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
2991                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
2992                 else
2993                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
2994         }
2995
2996         spin_lock_irq(&data->txlock);
2997         play_deferred(data);
2998         clear_bit(BTUSB_SUSPENDING, &data->flags);
2999         spin_unlock_irq(&data->txlock);
3000         schedule_work(&data->work);
3001
3002         return 0;
3003
3004 failed:
3005         usb_scuttle_anchored_urbs(&data->deferred);
3006 done:
3007         spin_lock_irq(&data->txlock);
3008         clear_bit(BTUSB_SUSPENDING, &data->flags);
3009         spin_unlock_irq(&data->txlock);
3010
3011         return err;
3012 }
3013 #endif
3014
3015 static struct usb_driver btusb_driver = {
3016         .name           = "btusb",
3017         .probe          = btusb_probe,
3018         .disconnect     = btusb_disconnect,
3019 #ifdef CONFIG_PM
3020         .suspend        = btusb_suspend,
3021         .resume         = btusb_resume,
3022 #endif
3023         .id_table       = btusb_table,
3024         .supports_autosuspend = 1,
3025         .disable_hub_initiated_lpm = 1,
3026 };
3027
3028 module_usb_driver(btusb_driver);
3029
3030 module_param(disable_scofix, bool, 0644);
3031 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
3032
3033 module_param(force_scofix, bool, 0644);
3034 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
3035
3036 module_param(reset, bool, 0644);
3037 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
3038
3039 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
3040 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
3041 MODULE_VERSION(VERSION);
3042 MODULE_LICENSE("GPL");