drivers/bluetooth/btusb.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  *
   4  *  Generic Bluetooth USB driver
   5  *
   6  *  Copyright (C) 2005-2008  Marcel Holtmann <marcel@holtmann.org>
   7  */
   8
   9 #include <linux/dmi.h>
  10 #include <linux/module.h>
  11 #include <linux/usb.h>
  12 #include <linux/usb/quirks.h>
  13 #include <linux/firmware.h>
  14 #include <linux/iopoll.h>
  15 #include <linux/of_device.h>
  16 #include <linux/of_irq.h>
  17 #include <linux/suspend.h>
  18 #include <linux/gpio/consumer.h>
  19 #include <asm/unaligned.h>
  20
  21 #include <net/bluetooth/bluetooth.h>
  22 #include <net/bluetooth/hci_core.h>
  23
  24 #include "btintel.h"
  25 #include "btbcm.h"
  26 #include "btrtl.h"
  27
  28 #define VERSION "0.8"
  29
  30 static bool disable_scofix;
  31 static bool force_scofix;
  32 static bool enable_autosuspend = IS_ENABLED(CONFIG_BT_HCIBTUSB_AUTOSUSPEND);
  33
  34 static bool reset = true;
  35
  36 static struct usb_driver btusb_driver;
  37
  38 #define BTUSB_IGNORE            0x01
  39 #define BTUSB_DIGIANSWER        0x02
  40 #define BTUSB_CSR               0x04
  41 #define BTUSB_SNIFFER           0x08
  42 #define BTUSB_BCM92035          0x10
  43 #define BTUSB_BROKEN_ISOC       0x20
  44 #define BTUSB_WRONG_SCO_MTU     0x40
  45 #define BTUSB_ATH3012           0x80
  46 #define BTUSB_INTEL             0x100
  47 #define BTUSB_INTEL_BOOT        0x200
  48 #define BTUSB_BCM_PATCHRAM      0x400
  49 #define BTUSB_MARVELL           0x800
  50 #define BTUSB_SWAVE             0x1000
  51 #define BTUSB_INTEL_NEW         0x2000
  52 #define BTUSB_AMP               0x4000
  53 #define BTUSB_QCA_ROME          0x8000
  54 #define BTUSB_BCM_APPLE         0x10000
  55 #define BTUSB_REALTEK           0x20000
  56 #define BTUSB_BCM2045           0x40000
  57 #define BTUSB_IFNUM_2           0x80000
  58 #define BTUSB_CW6622            0x100000
  59 #define BTUSB_MEDIATEK          0x200000
  60
  61 static const struct usb_device_id btusb_table[] = {
  62         /* Generic Bluetooth USB device */
  63         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  64
  65         /* Generic Bluetooth AMP device */
  66         { USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP },
  67
  68         /* Generic Bluetooth USB interface */
  69         { USB_INTERFACE_INFO(0xe0, 0x01, 0x01) },
  70
  71         /* Apple-specific (Broadcom) devices */
  72         { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01),
  73           .driver_info = BTUSB_BCM_APPLE | BTUSB_IFNUM_2 },
  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         /* Broadcom BCM43142A0 (Foxconn/Lenovo) */
 125         { USB_VENDOR_AND_INTERFACE_INFO(0x105b, 0xff, 0x01, 0x01),
 126           .driver_info = BTUSB_BCM_PATCHRAM },
 127
 128         /* Broadcom BCM920703 (HTC Vive) */
 129         { USB_VENDOR_AND_INTERFACE_INFO(0x0bb4, 0xff, 0x01, 0x01),
 130           .driver_info = BTUSB_BCM_PATCHRAM },
 131
 132         /* Foxconn - Hon Hai */
 133         { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01),
 134           .driver_info = BTUSB_BCM_PATCHRAM },
 135
 136         /* Lite-On Technology - Broadcom based */
 137         { USB_VENDOR_AND_INTERFACE_INFO(0x04ca, 0xff, 0x01, 0x01),
 138           .driver_info = BTUSB_BCM_PATCHRAM },
 139
 140         /* Broadcom devices with vendor specific id */
 141         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
 142           .driver_info = BTUSB_BCM_PATCHRAM },
 143
 144         /* ASUSTek Computer - Broadcom based */
 145         { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01),
 146           .driver_info = BTUSB_BCM_PATCHRAM },
 147
 148         /* Belkin F8065bf - Broadcom based */
 149         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01),
 150           .driver_info = BTUSB_BCM_PATCHRAM },
 151
 152         /* IMC Networks - Broadcom based */
 153         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01),
 154           .driver_info = BTUSB_BCM_PATCHRAM },
 155
 156         /* Dell Computer - Broadcom based  */
 157         { USB_VENDOR_AND_INTERFACE_INFO(0x413c, 0xff, 0x01, 0x01),
 158           .driver_info = BTUSB_BCM_PATCHRAM },
 159
 160         /* Toshiba Corp - Broadcom based */
 161         { USB_VENDOR_AND_INTERFACE_INFO(0x0930, 0xff, 0x01, 0x01),
 162           .driver_info = BTUSB_BCM_PATCHRAM },
 163
 164         /* Intel Bluetooth USB Bootloader (RAM module) */
 165         { USB_DEVICE(0x8087, 0x0a5a),
 166           .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
 167
 168         { }     /* Terminating entry */
 169 };
 170
 171 MODULE_DEVICE_TABLE(usb, btusb_table);
 172
 173 static const struct usb_device_id blacklist_table[] = {
 174         /* CSR BlueCore devices */
 175         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 176
 177         /* Broadcom BCM2033 without firmware */
 178         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 179
 180         /* Broadcom BCM2045 devices */
 181         { USB_DEVICE(0x0a5c, 0x2045), .driver_info = BTUSB_BCM2045 },
 182
 183         /* Atheros 3011 with sflash firmware */
 184         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 185         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 186         { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE },
 187         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 188         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 189         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 190         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 191
 192         /* Atheros AR9285 Malbec with sflash firmware */
 193         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 194
 195         /* Atheros 3012 with sflash firmware */
 196         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 197         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 198         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 199         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 200         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 201         { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
 202         { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
 203         { USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 },
 204         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 205         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 206         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 207         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 208         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 209         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 210         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 211         { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
 212         { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
 213         { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
 214         { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 },
 215         { USB_DEVICE(0x04ca, 0x3018), .driver_info = BTUSB_ATH3012 },
 216         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 217         { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
 218         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 219         { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
 220         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 221         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 222         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 223         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 224         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 225         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
 226         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 227         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 228         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 229         { USB_DEVICE(0x0cf3, 0x817b), .driver_info = BTUSB_ATH3012 },
 230         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 231         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 232         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 233         { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 },
 234         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 235         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 236         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 237         { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 },
 238         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 239         { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
 240         { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
 241         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
 242         { USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 },
 243         { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
 244         { USB_DEVICE(0x13d3, 0x3487), .driver_info = BTUSB_ATH3012 },
 245         { USB_DEVICE(0x13d3, 0x3490), .driver_info = BTUSB_ATH3012 },
 246
 247         /* Atheros AR5BBU12 with sflash firmware */
 248         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 249
 250         /* Atheros AR5BBU12 with sflash firmware */
 251         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 252         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 253
 254         /* QCA ROME chipset */
 255         { USB_DEVICE(0x0cf3, 0x535b), .driver_info = BTUSB_QCA_ROME },
 256         { USB_DEVICE(0x0cf3, 0xe007), .driver_info = BTUSB_QCA_ROME },
 257         { USB_DEVICE(0x0cf3, 0xe009), .driver_info = BTUSB_QCA_ROME },
 258         { USB_DEVICE(0x0cf3, 0xe010), .driver_info = BTUSB_QCA_ROME },
 259         { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME },
 260         { USB_DEVICE(0x0cf3, 0xe301), .driver_info = BTUSB_QCA_ROME },
 261         { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME },
 262         { USB_DEVICE(0x0489, 0xe092), .driver_info = BTUSB_QCA_ROME },
 263         { USB_DEVICE(0x0489, 0xe09f), .driver_info = BTUSB_QCA_ROME },
 264         { USB_DEVICE(0x0489, 0xe0a2), .driver_info = BTUSB_QCA_ROME },
 265         { USB_DEVICE(0x04ca, 0x3011), .driver_info = BTUSB_QCA_ROME },
 266         { USB_DEVICE(0x04ca, 0x3015), .driver_info = BTUSB_QCA_ROME },
 267         { USB_DEVICE(0x04ca, 0x3016), .driver_info = BTUSB_QCA_ROME },
 268         { USB_DEVICE(0x04ca, 0x301a), .driver_info = BTUSB_QCA_ROME },
 269         { USB_DEVICE(0x13d3, 0x3491), .driver_info = BTUSB_QCA_ROME },
 270         { USB_DEVICE(0x13d3, 0x3496), .driver_info = BTUSB_QCA_ROME },
 271         { USB_DEVICE(0x13d3, 0x3501), .driver_info = BTUSB_QCA_ROME },
 272
 273         /* Broadcom BCM2035 */
 274         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 275         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 276         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 277
 278         /* Broadcom BCM2045 */
 279         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 280         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 281
 282         /* IBM/Lenovo ThinkPad with Broadcom chip */
 283         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 284         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 285
 286         /* HP laptop with Broadcom chip */
 287         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 288
 289         /* Dell laptop with Broadcom chip */
 290         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 291
 292         /* Dell Wireless 370 and 410 devices */
 293         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 294         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 295
 296         /* Belkin F8T012 and F8T013 devices */
 297         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 298         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 299
 300         /* Asus WL-BTD202 device */
 301         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 302
 303         /* Kensington Bluetooth USB adapter */
 304         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 305
 306         /* RTX Telecom based adapters with buggy SCO support */
 307         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 308         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 309
 310         /* CONWISE Technology based adapters with buggy SCO support */
 311         { USB_DEVICE(0x0e5e, 0x6622),
 312           .driver_info = BTUSB_BROKEN_ISOC | BTUSB_CW6622},
 313
 314         /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
 315         { USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE },
 316
 317         /* Digianswer devices */
 318         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 319         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 320
 321         /* CSR BlueCore Bluetooth Sniffer */
 322         { USB_DEVICE(0x0a12, 0x0002),
 323           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 324
 325         /* Frontline ComProbe Bluetooth Sniffer */
 326         { USB_DEVICE(0x16d3, 0x0002),
 327           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 328
 329         /* Marvell Bluetooth devices */
 330         { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
 331         { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
 332         { USB_DEVICE(0x1286, 0x204e), .driver_info = BTUSB_MARVELL },
 333
 334         /* Intel Bluetooth devices */
 335         { USB_DEVICE(0x8087, 0x0025), .driver_info = BTUSB_INTEL_NEW },
 336         { USB_DEVICE(0x8087, 0x0026), .driver_info = BTUSB_INTEL_NEW },
 337         { USB_DEVICE(0x8087, 0x0029), .driver_info = BTUSB_INTEL_NEW },
 338         { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR },
 339         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 340         { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
 341         { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_NEW },
 342         { USB_DEVICE(0x8087, 0x0aa7), .driver_info = BTUSB_INTEL },
 343         { USB_DEVICE(0x8087, 0x0aaa), .driver_info = BTUSB_INTEL_NEW },
 344
 345         /* Other Intel Bluetooth devices */
 346         { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01),
 347           .driver_info = BTUSB_IGNORE },
 348
 349         /* Realtek Bluetooth devices */
 350         { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01),
 351           .driver_info = BTUSB_REALTEK },
 352
 353         /* MediaTek Bluetooth devices */
 354         { USB_VENDOR_AND_INTERFACE_INFO(0x0e8d, 0xe0, 0x01, 0x01),
 355           .driver_info = BTUSB_MEDIATEK },
 356
 357         /* Additional Realtek 8723AE Bluetooth devices */
 358         { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK },
 359         { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK },
 360
 361         /* Additional Realtek 8723BE Bluetooth devices */
 362         { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK },
 363         { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK },
 364         { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
 365         { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
 366         { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },
 367         { USB_DEVICE(0x13d3, 0x3494), .driver_info = BTUSB_REALTEK },
 368
 369         /* Additional Realtek 8723BU Bluetooth devices */
 370         { USB_DEVICE(0x7392, 0xa611), .driver_info = BTUSB_REALTEK },
 371
 372         /* Additional Realtek 8723DE Bluetooth devices */
 373         { USB_DEVICE(0x0bda, 0xb009), .driver_info = BTUSB_REALTEK },
 374         { USB_DEVICE(0x2ff8, 0xb011), .driver_info = BTUSB_REALTEK },
 375
 376         /* Additional Realtek 8821AE Bluetooth devices */
 377         { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
 378         { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },
 379         { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK },
 380         { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK },
 381         { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK },
 382
 383         /* Additional Realtek 8822BE Bluetooth devices */
 384         { USB_DEVICE(0x13d3, 0x3526), .driver_info = BTUSB_REALTEK },
 385         { USB_DEVICE(0x0b05, 0x185c), .driver_info = BTUSB_REALTEK },
 386
 387         /* Additional Realtek 8822CE Bluetooth devices */
 388         { USB_DEVICE(0x04ca, 0x4005), .driver_info = BTUSB_REALTEK },
 389
 390         /* Silicon Wave based devices */
 391         { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE },
 392
 393         { }     /* Terminating entry */
 394 };
 395
 396 /* The Bluetooth USB module build into some devices needs to be reset on resume,
 397  * this is a problem with the platform (likely shutting off all power) not with
 398  * the module itself. So we use a DMI list to match known broken platforms.
 399  */
 400 static const struct dmi_system_id btusb_needs_reset_resume_table[] = {
 401         {
 402                 /* Dell OptiPlex 3060 (QCA ROME device 0cf3:e007) */
 403                 .matches = {
 404                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 405                         DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 3060"),
 406                 },
 407         },
 408         {
 409                 /* Dell XPS 9360 (QCA ROME device 0cf3:e300) */
 410                 .matches = {
 411                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 412                         DMI_MATCH(DMI_PRODUCT_NAME, "XPS 13 9360"),
 413                 },
 414         },
 415         {
 416                 /* Dell Inspiron 5565 (QCA ROME device 0cf3:e009) */
 417                 .matches = {
 418                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 419                         DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5565"),
 420                 },
 421         },
 422         {}
 423 };
 424
 425 #define BTUSB_MAX_ISOC_FRAMES   10
 426
 427 #define BTUSB_INTR_RUNNING      0
 428 #define BTUSB_BULK_RUNNING      1
 429 #define BTUSB_ISOC_RUNNING      2
 430 #define BTUSB_SUSPENDING        3
 431 #define BTUSB_DID_ISO_RESUME    4
 432 #define BTUSB_BOOTLOADER        5
 433 #define BTUSB_DOWNLOADING       6
 434 #define BTUSB_FIRMWARE_LOADED   7
 435 #define BTUSB_FIRMWARE_FAILED   8
 436 #define BTUSB_BOOTING           9
 437 #define BTUSB_DIAG_RUNNING      10
 438 #define BTUSB_OOB_WAKE_ENABLED  11
 439 #define BTUSB_HW_RESET_ACTIVE   12
 440 #define BTUSB_TX_WAIT_VND_EVT   13
 441 #define BTUSB_WAKEUP_DISABLE    14
 442
 443 struct btusb_data {
 444         struct hci_dev       *hdev;
 445         struct usb_device    *udev;
 446         struct usb_interface *intf;
 447         struct usb_interface *isoc;
 448         struct usb_interface *diag;
 449         unsigned isoc_ifnum;
 450
 451         unsigned long flags;
 452
 453         struct work_struct work;
 454         struct work_struct waker;
 455
 456         struct usb_anchor deferred;
 457         struct usb_anchor tx_anchor;
 458         int tx_in_flight;
 459         spinlock_t txlock;
 460
 461         struct usb_anchor intr_anchor;
 462         struct usb_anchor bulk_anchor;
 463         struct usb_anchor isoc_anchor;
 464         struct usb_anchor diag_anchor;
 465         struct usb_anchor ctrl_anchor;
 466         spinlock_t rxlock;
 467
 468         struct sk_buff *evt_skb;
 469         struct sk_buff *acl_skb;
 470         struct sk_buff *sco_skb;
 471
 472         struct usb_endpoint_descriptor *intr_ep;
 473         struct usb_endpoint_descriptor *bulk_tx_ep;
 474         struct usb_endpoint_descriptor *bulk_rx_ep;
 475         struct usb_endpoint_descriptor *isoc_tx_ep;
 476         struct usb_endpoint_descriptor *isoc_rx_ep;
 477         struct usb_endpoint_descriptor *diag_tx_ep;
 478         struct usb_endpoint_descriptor *diag_rx_ep;
 479
 480         struct gpio_desc *reset_gpio;
 481
 482         __u8 cmdreq_type;
 483         __u8 cmdreq;
 484
 485         unsigned int sco_num;
 486         int isoc_altsetting;
 487         int suspend_count;
 488
 489         int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
 490         int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
 491
 492         int (*setup_on_usb)(struct hci_dev *hdev);
 493
 494         int oob_wake_irq;   /* irq for out-of-band wake-on-bt */
 495         unsigned cmd_timeout_cnt;
 496 };
 497
 498
 499 static void btusb_intel_cmd_timeout(struct hci_dev *hdev)
 500 {
 501         struct btusb_data *data = hci_get_drvdata(hdev);
 502         struct gpio_desc *reset_gpio = data->reset_gpio;
 503
 504         if (++data->cmd_timeout_cnt < 5)
 505                 return;
 506
 507         if (!reset_gpio) {
 508                 bt_dev_err(hdev, "No way to reset. Ignoring and continuing");
 509                 return;
 510         }
 511
 512         /*
 513          * Toggle the hard reset line if the platform provides one. The reset
 514          * is going to yank the device off the USB and then replug. So doing
 515          * once is enough. The cleanup is handled correctly on the way out
 516          * (standard USB disconnect), and the new device is detected cleanly
 517          * and bound to the driver again like it should be.
 518          */
 519         if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
 520                 bt_dev_err(hdev, "last reset failed? Not resetting again");
 521                 return;
 522         }
 523
 524         bt_dev_err(hdev, "Initiating HW reset via gpio");
 525         gpiod_set_value_cansleep(reset_gpio, 1);
 526         msleep(100);
 527         gpiod_set_value_cansleep(reset_gpio, 0);
 528 }
 529
 530 static void btusb_rtl_cmd_timeout(struct hci_dev *hdev)
 531 {
 532         struct btusb_data *data = hci_get_drvdata(hdev);
 533         struct gpio_desc *reset_gpio = data->reset_gpio;
 534
 535         if (++data->cmd_timeout_cnt < 5)
 536                 return;
 537
 538         if (!reset_gpio) {
 539                 bt_dev_err(hdev, "No gpio to reset Realtek device, ignoring");
 540                 return;
 541         }
 542
 543         /* Toggle the hard reset line. The Realtek device is going to
 544          * yank itself off the USB and then replug. The cleanup is handled
 545          * correctly on the way out (standard USB disconnect), and the new
 546          * device is detected cleanly and bound to the driver again like
 547          * it should be.
 548          */
 549         if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
 550                 bt_dev_err(hdev, "last reset failed? Not resetting again");
 551                 return;
 552         }
 553
 554         bt_dev_err(hdev, "Reset Realtek device via gpio");
 555         gpiod_set_value_cansleep(reset_gpio, 0);
 556         msleep(200);
 557         gpiod_set_value_cansleep(reset_gpio, 1);
 558 }
 559
 560 static inline void btusb_free_frags(struct btusb_data *data)
 561 {
 562         unsigned long flags;
 563
 564         spin_lock_irqsave(&data->rxlock, flags);
 565
 566         kfree_skb(data->evt_skb);
 567         data->evt_skb = NULL;
 568
 569         kfree_skb(data->acl_skb);
 570         data->acl_skb = NULL;
 571
 572         kfree_skb(data->sco_skb);
 573         data->sco_skb = NULL;
 574
 575         spin_unlock_irqrestore(&data->rxlock, flags);
 576 }
 577
 578 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
 579 {
 580         struct sk_buff *skb;
 581         unsigned long flags;
 582         int err = 0;
 583
 584         spin_lock_irqsave(&data->rxlock, flags);
 585         skb = data->evt_skb;
 586
 587         while (count) {
 588                 int len;
 589
 590                 if (!skb) {
 591                         skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
 592                         if (!skb) {
 593                                 err = -ENOMEM;
 594                                 break;
 595                         }
 596
 597                         hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
 598                         hci_skb_expect(skb) = HCI_EVENT_HDR_SIZE;
 599                 }
 600
 601                 len = min_t(uint, hci_skb_expect(skb), count);
 602                 skb_put_data(skb, buffer, len);
 603
 604                 count -= len;
 605                 buffer += len;
 606                 hci_skb_expect(skb) -= len;
 607
 608                 if (skb->len == HCI_EVENT_HDR_SIZE) {
 609                         /* Complete event header */
 610                         hci_skb_expect(skb) = hci_event_hdr(skb)->plen;
 611
 612                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 613                                 kfree_skb(skb);
 614                                 skb = NULL;
 615
 616                                 err = -EILSEQ;
 617                                 break;
 618                         }
 619                 }
 620
 621                 if (!hci_skb_expect(skb)) {
 622                         /* Complete frame */
 623                         data->recv_event(data->hdev, skb);
 624                         skb = NULL;
 625                 }
 626         }
 627
 628         data->evt_skb = skb;
 629         spin_unlock_irqrestore(&data->rxlock, flags);
 630
 631         return err;
 632 }
 633
 634 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
 635 {
 636         struct sk_buff *skb;
 637         unsigned long flags;
 638         int err = 0;
 639
 640         spin_lock_irqsave(&data->rxlock, flags);
 641         skb = data->acl_skb;
 642
 643         while (count) {
 644                 int len;
 645
 646                 if (!skb) {
 647                         skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
 648                         if (!skb) {
 649                                 err = -ENOMEM;
 650                                 break;
 651                         }
 652
 653                         hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT;
 654                         hci_skb_expect(skb) = HCI_ACL_HDR_SIZE;
 655                 }
 656
 657                 len = min_t(uint, hci_skb_expect(skb), count);
 658                 skb_put_data(skb, buffer, len);
 659
 660                 count -= len;
 661                 buffer += len;
 662                 hci_skb_expect(skb) -= len;
 663
 664                 if (skb->len == HCI_ACL_HDR_SIZE) {
 665                         __le16 dlen = hci_acl_hdr(skb)->dlen;
 666
 667                         /* Complete ACL header */
 668                         hci_skb_expect(skb) = __le16_to_cpu(dlen);
 669
 670                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 671                                 kfree_skb(skb);
 672                                 skb = NULL;
 673
 674                                 err = -EILSEQ;
 675                                 break;
 676                         }
 677                 }
 678
 679                 if (!hci_skb_expect(skb)) {
 680                         /* Complete frame */
 681                         hci_recv_frame(data->hdev, skb);
 682                         skb = NULL;
 683                 }
 684         }
 685
 686         data->acl_skb = skb;
 687         spin_unlock_irqrestore(&data->rxlock, flags);
 688
 689         return err;
 690 }
 691
 692 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
 693 {
 694         struct sk_buff *skb;
 695         unsigned long flags;
 696         int err = 0;
 697
 698         spin_lock_irqsave(&data->rxlock, flags);
 699         skb = data->sco_skb;
 700
 701         while (count) {
 702                 int len;
 703
 704                 if (!skb) {
 705                         skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
 706                         if (!skb) {
 707                                 err = -ENOMEM;
 708                                 break;
 709                         }
 710
 711                         hci_skb_pkt_type(skb) = HCI_SCODATA_PKT;
 712                         hci_skb_expect(skb) = HCI_SCO_HDR_SIZE;
 713                 }
 714
 715                 len = min_t(uint, hci_skb_expect(skb), count);
 716                 skb_put_data(skb, buffer, len);
 717
 718                 count -= len;
 719                 buffer += len;
 720                 hci_skb_expect(skb) -= len;
 721
 722                 if (skb->len == HCI_SCO_HDR_SIZE) {
 723                         /* Complete SCO header */
 724                         hci_skb_expect(skb) = hci_sco_hdr(skb)->dlen;
 725
 726                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 727                                 kfree_skb(skb);
 728                                 skb = NULL;
 729
 730                                 err = -EILSEQ;
 731                                 break;
 732                         }
 733                 }
 734
 735                 if (!hci_skb_expect(skb)) {
 736                         /* Complete frame */
 737                         hci_recv_frame(data->hdev, skb);
 738                         skb = NULL;
 739                 }
 740         }
 741
 742         data->sco_skb = skb;
 743         spin_unlock_irqrestore(&data->rxlock, flags);
 744
 745         return err;
 746 }
 747
 748 static void btusb_intr_complete(struct urb *urb)
 749 {
 750         struct hci_dev *hdev = urb->context;
 751         struct btusb_data *data = hci_get_drvdata(hdev);
 752         int err;
 753
 754         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 755                urb->actual_length);
 756
 757         if (!test_bit(HCI_RUNNING, &hdev->flags))
 758                 return;
 759
 760         if (urb->status == 0) {
 761                 hdev->stat.byte_rx += urb->actual_length;
 762
 763                 if (btusb_recv_intr(data, urb->transfer_buffer,
 764                                     urb->actual_length) < 0) {
 765                         bt_dev_err(hdev, "corrupted event packet");
 766                         hdev->stat.err_rx++;
 767                 }
 768         } else if (urb->status == -ENOENT) {
 769                 /* Avoid suspend failed when usb_kill_urb */
 770                 return;
 771         }
 772
 773         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 774                 return;
 775
 776         usb_mark_last_busy(data->udev);
 777         usb_anchor_urb(urb, &data->intr_anchor);
 778
 779         err = usb_submit_urb(urb, GFP_ATOMIC);
 780         if (err < 0) {
 781                 /* -EPERM: urb is being killed;
 782                  * -ENODEV: device got disconnected
 783                  */
 784                 if (err != -EPERM && err != -ENODEV)
 785                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
 786                                    urb, -err);
 787                 usb_unanchor_urb(urb);
 788         }
 789 }
 790
 791 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 792 {
 793         struct btusb_data *data = hci_get_drvdata(hdev);
 794         struct urb *urb;
 795         unsigned char *buf;
 796         unsigned int pipe;
 797         int err, size;
 798
 799         BT_DBG("%s", hdev->name);
 800
 801         if (!data->intr_ep)
 802                 return -ENODEV;
 803
 804         urb = usb_alloc_urb(0, mem_flags);
 805         if (!urb)
 806                 return -ENOMEM;
 807
 808         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 809
 810         buf = kmalloc(size, mem_flags);
 811         if (!buf) {
 812                 usb_free_urb(urb);
 813                 return -ENOMEM;
 814         }
 815
 816         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 817
 818         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 819                          btusb_intr_complete, hdev, data->intr_ep->bInterval);
 820
 821         urb->transfer_flags |= URB_FREE_BUFFER;
 822
 823         usb_anchor_urb(urb, &data->intr_anchor);
 824
 825         err = usb_submit_urb(urb, mem_flags);
 826         if (err < 0) {
 827                 if (err != -EPERM && err != -ENODEV)
 828                         bt_dev_err(hdev, "urb %p submission failed (%d)",
 829                                    urb, -err);
 830                 usb_unanchor_urb(urb);
 831         }
 832
 833         usb_free_urb(urb);
 834
 835         return err;
 836 }
 837
 838 static void btusb_bulk_complete(struct urb *urb)
 839 {
 840         struct hci_dev *hdev = urb->context;
 841         struct btusb_data *data = hci_get_drvdata(hdev);
 842         int err;
 843
 844         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 845                urb->actual_length);
 846
 847         if (!test_bit(HCI_RUNNING, &hdev->flags))
 848                 return;
 849
 850         if (urb->status == 0) {
 851                 hdev->stat.byte_rx += urb->actual_length;
 852
 853                 if (data->recv_bulk(data, urb->transfer_buffer,
 854                                     urb->actual_length) < 0) {
 855                         bt_dev_err(hdev, "corrupted ACL packet");
 856                         hdev->stat.err_rx++;
 857                 }
 858         } else if (urb->status == -ENOENT) {
 859                 /* Avoid suspend failed when usb_kill_urb */
 860                 return;
 861         }
 862
 863         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 864                 return;
 865
 866         usb_anchor_urb(urb, &data->bulk_anchor);
 867         usb_mark_last_busy(data->udev);
 868
 869         err = usb_submit_urb(urb, GFP_ATOMIC);
 870         if (err < 0) {
 871                 /* -EPERM: urb is being killed;
 872                  * -ENODEV: device got disconnected
 873                  */
 874                 if (err != -EPERM && err != -ENODEV)
 875                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
 876                                    urb, -err);
 877                 usb_unanchor_urb(urb);
 878         }
 879 }
 880
 881 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 882 {
 883         struct btusb_data *data = hci_get_drvdata(hdev);
 884         struct urb *urb;
 885         unsigned char *buf;
 886         unsigned int pipe;
 887         int err, size = HCI_MAX_FRAME_SIZE;
 888
 889         BT_DBG("%s", hdev->name);
 890
 891         if (!data->bulk_rx_ep)
 892                 return -ENODEV;
 893
 894         urb = usb_alloc_urb(0, mem_flags);
 895         if (!urb)
 896                 return -ENOMEM;
 897
 898         buf = kmalloc(size, mem_flags);
 899         if (!buf) {
 900                 usb_free_urb(urb);
 901                 return -ENOMEM;
 902         }
 903
 904         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 905
 906         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
 907                           btusb_bulk_complete, hdev);
 908
 909         urb->transfer_flags |= URB_FREE_BUFFER;
 910
 911         usb_mark_last_busy(data->udev);
 912         usb_anchor_urb(urb, &data->bulk_anchor);
 913
 914         err = usb_submit_urb(urb, mem_flags);
 915         if (err < 0) {
 916                 if (err != -EPERM && err != -ENODEV)
 917                         bt_dev_err(hdev, "urb %p submission failed (%d)",
 918                                    urb, -err);
 919                 usb_unanchor_urb(urb);
 920         }
 921
 922         usb_free_urb(urb);
 923
 924         return err;
 925 }
 926
 927 static void btusb_isoc_complete(struct urb *urb)
 928 {
 929         struct hci_dev *hdev = urb->context;
 930         struct btusb_data *data = hci_get_drvdata(hdev);
 931         int i, err;
 932
 933         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 934                urb->actual_length);
 935
 936         if (!test_bit(HCI_RUNNING, &hdev->flags))
 937                 return;
 938
 939         if (urb->status == 0) {
 940                 for (i = 0; i < urb->number_of_packets; i++) {
 941                         unsigned int offset = urb->iso_frame_desc[i].offset;
 942                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 943
 944                         if (urb->iso_frame_desc[i].status)
 945                                 continue;
 946
 947                         hdev->stat.byte_rx += length;
 948
 949                         if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
 950                                             length) < 0) {
 951                                 bt_dev_err(hdev, "corrupted SCO packet");
 952                                 hdev->stat.err_rx++;
 953                         }
 954                 }
 955         } else if (urb->status == -ENOENT) {
 956                 /* Avoid suspend failed when usb_kill_urb */
 957                 return;
 958         }
 959
 960         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 961                 return;
 962
 963         usb_anchor_urb(urb, &data->isoc_anchor);
 964
 965         err = usb_submit_urb(urb, GFP_ATOMIC);
 966         if (err < 0) {
 967                 /* -EPERM: urb is being killed;
 968                  * -ENODEV: device got disconnected
 969                  */
 970                 if (err != -EPERM && err != -ENODEV)
 971                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
 972                                    urb, -err);
 973                 usb_unanchor_urb(urb);
 974         }
 975 }
 976
 977 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 978 {
 979         int i, offset = 0;
 980
 981         BT_DBG("len %d mtu %d", len, mtu);
 982
 983         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 984                                         i++, offset += mtu, len -= mtu) {
 985                 urb->iso_frame_desc[i].offset = offset;
 986                 urb->iso_frame_desc[i].length = mtu;
 987         }
 988
 989         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 990                 urb->iso_frame_desc[i].offset = offset;
 991                 urb->iso_frame_desc[i].length = len;
 992                 i++;
 993         }
 994
 995         urb->number_of_packets = i;
 996 }
 997
 998 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 999 {
1000         struct btusb_data *data = hci_get_drvdata(hdev);
1001         struct urb *urb;
1002         unsigned char *buf;
1003         unsigned int pipe;
1004         int err, size;
1005
1006         BT_DBG("%s", hdev->name);
1007
1008         if (!data->isoc_rx_ep)
1009                 return -ENODEV;
1010
1011         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
1012         if (!urb)
1013                 return -ENOMEM;
1014
1015         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
1016                                                 BTUSB_MAX_ISOC_FRAMES;
1017
1018         buf = kmalloc(size, mem_flags);
1019         if (!buf) {
1020                 usb_free_urb(urb);
1021                 return -ENOMEM;
1022         }
1023
1024         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
1025
1026         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
1027                          hdev, data->isoc_rx_ep->bInterval);
1028
1029         urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
1030
1031         __fill_isoc_descriptor(urb, size,
1032                                le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
1033
1034         usb_anchor_urb(urb, &data->isoc_anchor);
1035
1036         err = usb_submit_urb(urb, mem_flags);
1037         if (err < 0) {
1038                 if (err != -EPERM && err != -ENODEV)
1039                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1040                                    urb, -err);
1041                 usb_unanchor_urb(urb);
1042         }
1043
1044         usb_free_urb(urb);
1045
1046         return err;
1047 }
1048
1049 static void btusb_diag_complete(struct urb *urb)
1050 {
1051         struct hci_dev *hdev = urb->context;
1052         struct btusb_data *data = hci_get_drvdata(hdev);
1053         int err;
1054
1055         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1056                urb->actual_length);
1057
1058         if (urb->status == 0) {
1059                 struct sk_buff *skb;
1060
1061                 skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC);
1062                 if (skb) {
1063                         skb_put_data(skb, urb->transfer_buffer,
1064                                      urb->actual_length);
1065                         hci_recv_diag(hdev, skb);
1066                 }
1067         } else if (urb->status == -ENOENT) {
1068                 /* Avoid suspend failed when usb_kill_urb */
1069                 return;
1070         }
1071
1072         if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags))
1073                 return;
1074
1075         usb_anchor_urb(urb, &data->diag_anchor);
1076         usb_mark_last_busy(data->udev);
1077
1078         err = usb_submit_urb(urb, GFP_ATOMIC);
1079         if (err < 0) {
1080                 /* -EPERM: urb is being killed;
1081                  * -ENODEV: device got disconnected
1082                  */
1083                 if (err != -EPERM && err != -ENODEV)
1084                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1085                                    urb, -err);
1086                 usb_unanchor_urb(urb);
1087         }
1088 }
1089
1090 static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags)
1091 {
1092         struct btusb_data *data = hci_get_drvdata(hdev);
1093         struct urb *urb;
1094         unsigned char *buf;
1095         unsigned int pipe;
1096         int err, size = HCI_MAX_FRAME_SIZE;
1097
1098         BT_DBG("%s", hdev->name);
1099
1100         if (!data->diag_rx_ep)
1101                 return -ENODEV;
1102
1103         urb = usb_alloc_urb(0, mem_flags);
1104         if (!urb)
1105                 return -ENOMEM;
1106
1107         buf = kmalloc(size, mem_flags);
1108         if (!buf) {
1109                 usb_free_urb(urb);
1110                 return -ENOMEM;
1111         }
1112
1113         pipe = usb_rcvbulkpipe(data->udev, data->diag_rx_ep->bEndpointAddress);
1114
1115         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
1116                           btusb_diag_complete, hdev);
1117
1118         urb->transfer_flags |= URB_FREE_BUFFER;
1119
1120         usb_mark_last_busy(data->udev);
1121         usb_anchor_urb(urb, &data->diag_anchor);
1122
1123         err = usb_submit_urb(urb, mem_flags);
1124         if (err < 0) {
1125                 if (err != -EPERM && err != -ENODEV)
1126                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1127                                    urb, -err);
1128                 usb_unanchor_urb(urb);
1129         }
1130
1131         usb_free_urb(urb);
1132
1133         return err;
1134 }
1135
1136 static void btusb_tx_complete(struct urb *urb)
1137 {
1138         struct sk_buff *skb = urb->context;
1139         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1140         struct btusb_data *data = hci_get_drvdata(hdev);
1141         unsigned long flags;
1142
1143         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1144                urb->actual_length);
1145
1146         if (!test_bit(HCI_RUNNING, &hdev->flags))
1147                 goto done;
1148
1149         if (!urb->status)
1150                 hdev->stat.byte_tx += urb->transfer_buffer_length;
1151         else
1152                 hdev->stat.err_tx++;
1153
1154 done:
1155         spin_lock_irqsave(&data->txlock, flags);
1156         data->tx_in_flight--;
1157         spin_unlock_irqrestore(&data->txlock, flags);
1158
1159         kfree(urb->setup_packet);
1160
1161         kfree_skb(skb);
1162 }
1163
1164 static void btusb_isoc_tx_complete(struct urb *urb)
1165 {
1166         struct sk_buff *skb = urb->context;
1167         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1168
1169         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1170                urb->actual_length);
1171
1172         if (!test_bit(HCI_RUNNING, &hdev->flags))
1173                 goto done;
1174
1175         if (!urb->status)
1176                 hdev->stat.byte_tx += urb->transfer_buffer_length;
1177         else
1178                 hdev->stat.err_tx++;
1179
1180 done:
1181         kfree(urb->setup_packet);
1182
1183         kfree_skb(skb);
1184 }
1185
1186 static int btusb_open(struct hci_dev *hdev)
1187 {
1188         struct btusb_data *data = hci_get_drvdata(hdev);
1189         int err;
1190
1191         BT_DBG("%s", hdev->name);
1192
1193         err = usb_autopm_get_interface(data->intf);
1194         if (err < 0)
1195                 return err;
1196
1197         /* Patching USB firmware files prior to starting any URBs of HCI path
1198          * It is more safe to use USB bulk channel for downloading USB patch
1199          */
1200         if (data->setup_on_usb) {
1201                 err = data->setup_on_usb(hdev);
1202                 if (err < 0)
1203                         return err;
1204         }
1205
1206         data->intf->needs_remote_wakeup = 1;
1207
1208         /* Disable device remote wakeup when host is suspended
1209          * For Realtek chips, global suspend without
1210          * SET_FEATURE (DEVICE_REMOTE_WAKEUP) can save more power in device.
1211          */
1212         if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags))
1213                 device_wakeup_disable(&data->udev->dev);
1214
1215         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
1216                 goto done;
1217
1218         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
1219         if (err < 0)
1220                 goto failed;
1221
1222         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1223         if (err < 0) {
1224                 usb_kill_anchored_urbs(&data->intr_anchor);
1225                 goto failed;
1226         }
1227
1228         set_bit(BTUSB_BULK_RUNNING, &data->flags);
1229         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1230
1231         if (data->diag) {
1232                 if (!btusb_submit_diag_urb(hdev, GFP_KERNEL))
1233                         set_bit(BTUSB_DIAG_RUNNING, &data->flags);
1234         }
1235
1236 done:
1237         usb_autopm_put_interface(data->intf);
1238         return 0;
1239
1240 failed:
1241         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1242         usb_autopm_put_interface(data->intf);
1243         return err;
1244 }
1245
1246 static void btusb_stop_traffic(struct btusb_data *data)
1247 {
1248         usb_kill_anchored_urbs(&data->intr_anchor);
1249         usb_kill_anchored_urbs(&data->bulk_anchor);
1250         usb_kill_anchored_urbs(&data->isoc_anchor);
1251         usb_kill_anchored_urbs(&data->diag_anchor);
1252         usb_kill_anchored_urbs(&data->ctrl_anchor);
1253 }
1254
1255 static int btusb_close(struct hci_dev *hdev)
1256 {
1257         struct btusb_data *data = hci_get_drvdata(hdev);
1258         int err;
1259
1260         BT_DBG("%s", hdev->name);
1261
1262         cancel_work_sync(&data->work);
1263         cancel_work_sync(&data->waker);
1264
1265         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1266         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1267         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1268         clear_bit(BTUSB_DIAG_RUNNING, &data->flags);
1269
1270         btusb_stop_traffic(data);
1271         btusb_free_frags(data);
1272
1273         err = usb_autopm_get_interface(data->intf);
1274         if (err < 0)
1275                 goto failed;
1276
1277         data->intf->needs_remote_wakeup = 0;
1278
1279         /* Enable remote wake up for auto-suspend */
1280         if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags))
1281                 data->intf->needs_remote_wakeup = 1;
1282
1283         usb_autopm_put_interface(data->intf);
1284
1285 failed:
1286         usb_scuttle_anchored_urbs(&data->deferred);
1287         return 0;
1288 }
1289
1290 static int btusb_flush(struct hci_dev *hdev)
1291 {
1292         struct btusb_data *data = hci_get_drvdata(hdev);
1293
1294         BT_DBG("%s", hdev->name);
1295
1296         usb_kill_anchored_urbs(&data->tx_anchor);
1297         btusb_free_frags(data);
1298
1299         return 0;
1300 }
1301
1302 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
1303 {
1304         struct btusb_data *data = hci_get_drvdata(hdev);
1305         struct usb_ctrlrequest *dr;
1306         struct urb *urb;
1307         unsigned int pipe;
1308
1309         urb = usb_alloc_urb(0, GFP_KERNEL);
1310         if (!urb)
1311                 return ERR_PTR(-ENOMEM);
1312
1313         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
1314         if (!dr) {
1315                 usb_free_urb(urb);
1316                 return ERR_PTR(-ENOMEM);
1317         }
1318
1319         dr->bRequestType = data->cmdreq_type;
1320         dr->bRequest     = data->cmdreq;
1321         dr->wIndex       = 0;
1322         dr->wValue       = 0;
1323         dr->wLength      = __cpu_to_le16(skb->len);
1324
1325         pipe = usb_sndctrlpipe(data->udev, 0x00);
1326
1327         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
1328                              skb->data, skb->len, btusb_tx_complete, skb);
1329
1330         skb->dev = (void *)hdev;
1331
1332         return urb;
1333 }
1334
1335 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
1336 {
1337         struct btusb_data *data = hci_get_drvdata(hdev);
1338         struct urb *urb;
1339         unsigned int pipe;
1340
1341         if (!data->bulk_tx_ep)
1342                 return ERR_PTR(-ENODEV);
1343
1344         urb = usb_alloc_urb(0, GFP_KERNEL);
1345         if (!urb)
1346                 return ERR_PTR(-ENOMEM);
1347
1348         pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1349
1350         usb_fill_bulk_urb(urb, data->udev, pipe,
1351                           skb->data, skb->len, btusb_tx_complete, skb);
1352
1353         skb->dev = (void *)hdev;
1354
1355         return urb;
1356 }
1357
1358 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1359 {
1360         struct btusb_data *data = hci_get_drvdata(hdev);
1361         struct urb *urb;
1362         unsigned int pipe;
1363
1364         if (!data->isoc_tx_ep)
1365                 return ERR_PTR(-ENODEV);
1366
1367         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1368         if (!urb)
1369                 return ERR_PTR(-ENOMEM);
1370
1371         pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1372
1373         usb_fill_int_urb(urb, data->udev, pipe,
1374                          skb->data, skb->len, btusb_isoc_tx_complete,
1375                          skb, data->isoc_tx_ep->bInterval);
1376
1377         urb->transfer_flags  = URB_ISO_ASAP;
1378
1379         __fill_isoc_descriptor(urb, skb->len,
1380                                le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1381
1382         skb->dev = (void *)hdev;
1383
1384         return urb;
1385 }
1386
1387 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1388 {
1389         struct btusb_data *data = hci_get_drvdata(hdev);
1390         int err;
1391
1392         usb_anchor_urb(urb, &data->tx_anchor);
1393
1394         err = usb_submit_urb(urb, GFP_KERNEL);
1395         if (err < 0) {
1396                 if (err != -EPERM && err != -ENODEV)
1397                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1398                                    urb, -err);
1399                 kfree(urb->setup_packet);
1400                 usb_unanchor_urb(urb);
1401         } else {
1402                 usb_mark_last_busy(data->udev);
1403         }
1404
1405         usb_free_urb(urb);
1406         return err;
1407 }
1408
1409 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1410 {
1411         struct btusb_data *data = hci_get_drvdata(hdev);
1412         unsigned long flags;
1413         bool suspending;
1414
1415         spin_lock_irqsave(&data->txlock, flags);
1416         suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1417         if (!suspending)
1418                 data->tx_in_flight++;
1419         spin_unlock_irqrestore(&data->txlock, flags);
1420
1421         if (!suspending)
1422                 return submit_tx_urb(hdev, urb);
1423
1424         usb_anchor_urb(urb, &data->deferred);
1425         schedule_work(&data->waker);
1426
1427         usb_free_urb(urb);
1428         return 0;
1429 }
1430
1431 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1432 {
1433         struct urb *urb;
1434
1435         BT_DBG("%s", hdev->name);
1436
1437         switch (hci_skb_pkt_type(skb)) {
1438         case HCI_COMMAND_PKT:
1439                 urb = alloc_ctrl_urb(hdev, skb);
1440                 if (IS_ERR(urb))
1441                         return PTR_ERR(urb);
1442
1443                 hdev->stat.cmd_tx++;
1444                 return submit_or_queue_tx_urb(hdev, urb);
1445
1446         case HCI_ACLDATA_PKT:
1447                 urb = alloc_bulk_urb(hdev, skb);
1448                 if (IS_ERR(urb))
1449                         return PTR_ERR(urb);
1450
1451                 hdev->stat.acl_tx++;
1452                 return submit_or_queue_tx_urb(hdev, urb);
1453
1454         case HCI_SCODATA_PKT:
1455                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1456                         return -ENODEV;
1457
1458                 urb = alloc_isoc_urb(hdev, skb);
1459                 if (IS_ERR(urb))
1460                         return PTR_ERR(urb);
1461
1462                 hdev->stat.sco_tx++;
1463                 return submit_tx_urb(hdev, urb);
1464         }
1465
1466         return -EILSEQ;
1467 }
1468
1469 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1470 {
1471         struct btusb_data *data = hci_get_drvdata(hdev);
1472
1473         BT_DBG("%s evt %d", hdev->name, evt);
1474
1475         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1476                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1477                 schedule_work(&data->work);
1478         }
1479 }
1480
1481 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1482 {
1483         struct btusb_data *data = hci_get_drvdata(hdev);
1484         struct usb_interface *intf = data->isoc;
1485         struct usb_endpoint_descriptor *ep_desc;
1486         int i, err;
1487
1488         if (!data->isoc)
1489                 return -ENODEV;
1490
1491         err = usb_set_interface(data->udev, data->isoc_ifnum, altsetting);
1492         if (err < 0) {
1493                 bt_dev_err(hdev, "setting interface failed (%d)", -err);
1494                 return err;
1495         }
1496
1497         data->isoc_altsetting = altsetting;
1498
1499         data->isoc_tx_ep = NULL;
1500         data->isoc_rx_ep = NULL;
1501
1502         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1503                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1504
1505                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1506                         data->isoc_tx_ep = ep_desc;
1507                         continue;
1508                 }
1509
1510                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1511                         data->isoc_rx_ep = ep_desc;
1512                         continue;
1513                 }
1514         }
1515
1516         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1517                 bt_dev_err(hdev, "invalid SCO descriptors");
1518                 return -ENODEV;
1519         }
1520
1521         return 0;
1522 }
1523
1524 static void btusb_work(struct work_struct *work)
1525 {
1526         struct btusb_data *data = container_of(work, struct btusb_data, work);
1527         struct hci_dev *hdev = data->hdev;
1528         int new_alts;
1529         int err;
1530
1531         if (data->sco_num > 0) {
1532                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1533                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1534                         if (err < 0) {
1535                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1536                                 usb_kill_anchored_urbs(&data->isoc_anchor);
1537                                 return;
1538                         }
1539
1540                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1541                 }
1542
1543                 if (hdev->voice_setting & 0x0020) {
1544                         static const int alts[3] = { 2, 4, 5 };
1545
1546                         new_alts = alts[data->sco_num - 1];
1547                 } else {
1548                         new_alts = data->sco_num;
1549                 }
1550
1551                 if (data->isoc_altsetting != new_alts) {
1552                         unsigned long flags;
1553
1554                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1555                         usb_kill_anchored_urbs(&data->isoc_anchor);
1556
1557                         /* When isochronous alternate setting needs to be
1558                          * changed, because SCO connection has been added
1559                          * or removed, a packet fragment may be left in the
1560                          * reassembling state. This could lead to wrongly
1561                          * assembled fragments.
1562                          *
1563                          * Clear outstanding fragment when selecting a new
1564                          * alternate setting.
1565                          */
1566                         spin_lock_irqsave(&data->rxlock, flags);
1567                         kfree_skb(data->sco_skb);
1568                         data->sco_skb = NULL;
1569                         spin_unlock_irqrestore(&data->rxlock, flags);
1570
1571                         if (__set_isoc_interface(hdev, new_alts) < 0)
1572                                 return;
1573                 }
1574
1575                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1576                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1577                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1578                         else
1579                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1580                 }
1581         } else {
1582                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1583                 usb_kill_anchored_urbs(&data->isoc_anchor);
1584
1585                 __set_isoc_interface(hdev, 0);
1586                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1587                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1588         }
1589 }
1590
1591 static void btusb_waker(struct work_struct *work)
1592 {
1593         struct btusb_data *data = container_of(work, struct btusb_data, waker);
1594         int err;
1595
1596         err = usb_autopm_get_interface(data->intf);
1597         if (err < 0)
1598                 return;
1599
1600         usb_autopm_put_interface(data->intf);
1601 }
1602
1603 static int btusb_setup_bcm92035(struct hci_dev *hdev)
1604 {
1605         struct sk_buff *skb;
1606         u8 val = 0x00;
1607
1608         BT_DBG("%s", hdev->name);
1609
1610         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1611         if (IS_ERR(skb))
1612                 bt_dev_err(hdev, "BCM92035 command failed (%ld)", PTR_ERR(skb));
1613         else
1614                 kfree_skb(skb);
1615
1616         return 0;
1617 }
1618
1619 static int btusb_setup_csr(struct hci_dev *hdev)
1620 {
1621         struct hci_rp_read_local_version *rp;
1622         struct sk_buff *skb;
1623
1624         BT_DBG("%s", hdev->name);
1625
1626         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1627                              HCI_INIT_TIMEOUT);
1628         if (IS_ERR(skb)) {
1629                 int err = PTR_ERR(skb);
1630                 bt_dev_err(hdev, "CSR: Local version failed (%d)", err);
1631                 return err;
1632         }
1633
1634         if (skb->len != sizeof(struct hci_rp_read_local_version)) {
1635                 bt_dev_err(hdev, "CSR: Local version length mismatch");
1636                 kfree_skb(skb);
1637                 return -EIO;
1638         }
1639
1640         rp = (struct hci_rp_read_local_version *)skb->data;
1641
1642         /* Detect controllers which aren't real CSR ones. */
1643         if (le16_to_cpu(rp->manufacturer) != 10 ||
1644             le16_to_cpu(rp->lmp_subver) == 0x0c5c) {
1645                 /* Clear the reset quirk since this is not an actual
1646                  * early Bluetooth 1.1 device from CSR.
1647                  */
1648                 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1649
1650                 /* These fake CSR controllers have all a broken
1651                  * stored link key handling and so just disable it.
1652                  */
1653                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
1654         }
1655
1656         kfree_skb(skb);
1657
1658         return 0;
1659 }
1660
1661 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1662                                                        struct intel_version *ver)
1663 {
1664         const struct firmware *fw;
1665         char fwname[64];
1666         int ret;
1667
1668         snprintf(fwname, sizeof(fwname),
1669                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1670                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
1671                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1672                  ver->fw_build_ww, ver->fw_build_yy);
1673
1674         ret = request_firmware(&fw, fwname, &hdev->dev);
1675         if (ret < 0) {
1676                 if (ret == -EINVAL) {
1677                         bt_dev_err(hdev, "Intel firmware file request failed (%d)",
1678                                    ret);
1679                         return NULL;
1680                 }
1681
1682                 bt_dev_err(hdev, "failed to open Intel firmware file: %s (%d)",
1683                            fwname, ret);
1684
1685                 /* If the correct firmware patch file is not found, use the
1686                  * default firmware patch file instead
1687                  */
1688                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1689                          ver->hw_platform, ver->hw_variant);
1690                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1691                         bt_dev_err(hdev, "failed to open default fw file: %s",
1692                                    fwname);
1693                         return NULL;
1694                 }
1695         }
1696
1697         bt_dev_info(hdev, "Intel Bluetooth firmware file: %s", fwname);
1698
1699         return fw;
1700 }
1701
1702 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1703                                       const struct firmware *fw,
1704                                       const u8 **fw_ptr, int *disable_patch)
1705 {
1706         struct sk_buff *skb;
1707         struct hci_command_hdr *cmd;
1708         const u8 *cmd_param;
1709         struct hci_event_hdr *evt = NULL;
1710         const u8 *evt_param = NULL;
1711         int remain = fw->size - (*fw_ptr - fw->data);
1712
1713         /* The first byte indicates the types of the patch command or event.
1714          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1715          * in the current firmware buffer doesn't start with 0x01 or
1716          * the size of remain buffer is smaller than HCI command header,
1717          * the firmware file is corrupted and it should stop the patching
1718          * process.
1719          */
1720         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1721                 bt_dev_err(hdev, "Intel fw corrupted: invalid cmd read");
1722                 return -EINVAL;
1723         }
1724         (*fw_ptr)++;
1725         remain--;
1726
1727         cmd = (struct hci_command_hdr *)(*fw_ptr);
1728         *fw_ptr += sizeof(*cmd);
1729         remain -= sizeof(*cmd);
1730
1731         /* Ensure that the remain firmware data is long enough than the length
1732          * of command parameter. If not, the firmware file is corrupted.
1733          */
1734         if (remain < cmd->plen) {
1735                 bt_dev_err(hdev, "Intel fw corrupted: invalid cmd len");
1736                 return -EFAULT;
1737         }
1738
1739         /* If there is a command that loads a patch in the firmware
1740          * file, then enable the patch upon success, otherwise just
1741          * disable the manufacturer mode, for example patch activation
1742          * is not required when the default firmware patch file is used
1743          * because there are no patch data to load.
1744          */
1745         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1746                 *disable_patch = 0;
1747
1748         cmd_param = *fw_ptr;
1749         *fw_ptr += cmd->plen;
1750         remain -= cmd->plen;
1751
1752         /* This reads the expected events when the above command is sent to the
1753          * device. Some vendor commands expects more than one events, for
1754          * example command status event followed by vendor specific event.
1755          * For this case, it only keeps the last expected event. so the command
1756          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1757          * last expected event.
1758          */
1759         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1760                 (*fw_ptr)++;
1761                 remain--;
1762
1763                 evt = (struct hci_event_hdr *)(*fw_ptr);
1764                 *fw_ptr += sizeof(*evt);
1765                 remain -= sizeof(*evt);
1766
1767                 if (remain < evt->plen) {
1768                         bt_dev_err(hdev, "Intel fw corrupted: invalid evt len");
1769                         return -EFAULT;
1770                 }
1771
1772                 evt_param = *fw_ptr;
1773                 *fw_ptr += evt->plen;
1774                 remain -= evt->plen;
1775         }
1776
1777         /* Every HCI commands in the firmware file has its correspond event.
1778          * If event is not found or remain is smaller than zero, the firmware
1779          * file is corrupted.
1780          */
1781         if (!evt || !evt_param || remain < 0) {
1782                 bt_dev_err(hdev, "Intel fw corrupted: invalid evt read");
1783                 return -EFAULT;
1784         }
1785
1786         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1787                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1788         if (IS_ERR(skb)) {
1789                 bt_dev_err(hdev, "sending Intel patch command (0x%4.4x) failed (%ld)",
1790                            cmd->opcode, PTR_ERR(skb));
1791                 return PTR_ERR(skb);
1792         }
1793
1794         /* It ensures that the returned event matches the event data read from
1795          * the firmware file. At fist, it checks the length and then
1796          * the contents of the event.
1797          */
1798         if (skb->len != evt->plen) {
1799                 bt_dev_err(hdev, "mismatch event length (opcode 0x%4.4x)",
1800                            le16_to_cpu(cmd->opcode));
1801                 kfree_skb(skb);
1802                 return -EFAULT;
1803         }
1804
1805         if (memcmp(skb->data, evt_param, evt->plen)) {
1806                 bt_dev_err(hdev, "mismatch event parameter (opcode 0x%4.4x)",
1807                            le16_to_cpu(cmd->opcode));
1808                 kfree_skb(skb);
1809                 return -EFAULT;
1810         }
1811         kfree_skb(skb);
1812
1813         return 0;
1814 }
1815
1816 static int btusb_setup_intel(struct hci_dev *hdev)
1817 {
1818         struct sk_buff *skb;
1819         const struct firmware *fw;
1820         const u8 *fw_ptr;
1821         int disable_patch, err;
1822         struct intel_version ver;
1823
1824         BT_DBG("%s", hdev->name);
1825
1826         /* The controller has a bug with the first HCI command sent to it
1827          * returning number of completed commands as zero. This would stall the
1828          * command processing in the Bluetooth core.
1829          *
1830          * As a workaround, send HCI Reset command first which will reset the
1831          * number of completed commands and allow normal command processing
1832          * from now on.
1833          */
1834         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1835         if (IS_ERR(skb)) {
1836                 bt_dev_err(hdev, "sending initial HCI reset command failed (%ld)",
1837                            PTR_ERR(skb));
1838                 return PTR_ERR(skb);
1839         }
1840         kfree_skb(skb);
1841
1842         /* Read Intel specific controller version first to allow selection of
1843          * which firmware file to load.
1844          *
1845          * The returned information are hardware variant and revision plus
1846          * firmware variant, revision and build number.
1847          */
1848         err = btintel_read_version(hdev, &ver);
1849         if (err)
1850                 return err;
1851
1852         bt_dev_info(hdev, "read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1853                     ver.hw_platform, ver.hw_variant, ver.hw_revision,
1854                     ver.fw_variant,  ver.fw_revision, ver.fw_build_num,
1855                     ver.fw_build_ww, ver.fw_build_yy, ver.fw_patch_num);
1856
1857         /* fw_patch_num indicates the version of patch the device currently
1858          * have. If there is no patch data in the device, it is always 0x00.
1859          * So, if it is other than 0x00, no need to patch the device again.
1860          */
1861         if (ver.fw_patch_num) {
1862                 bt_dev_info(hdev, "Intel device is already patched. "
1863                             "patch num: %02x", ver.fw_patch_num);
1864                 goto complete;
1865         }
1866
1867         /* Opens the firmware patch file based on the firmware version read
1868          * from the controller. If it fails to open the matching firmware
1869          * patch file, it tries to open the default firmware patch file.
1870          * If no patch file is found, allow the device to operate without
1871          * a patch.
1872          */
1873         fw = btusb_setup_intel_get_fw(hdev, &ver);
1874         if (!fw)
1875                 goto complete;
1876         fw_ptr = fw->data;
1877
1878         /* Enable the manufacturer mode of the controller.
1879          * Only while this mode is enabled, the driver can download the
1880          * firmware patch data and configuration parameters.
1881          */
1882         err = btintel_enter_mfg(hdev);
1883         if (err) {
1884                 release_firmware(fw);
1885                 return err;
1886         }
1887
1888         disable_patch = 1;
1889
1890         /* The firmware data file consists of list of Intel specific HCI
1891          * commands and its expected events. The first byte indicates the
1892          * type of the message, either HCI command or HCI event.
1893          *
1894          * It reads the command and its expected event from the firmware file,
1895          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1896          * the returned event is compared with the event read from the firmware
1897          * file and it will continue until all the messages are downloaded to
1898          * the controller.
1899          *
1900          * Once the firmware patching is completed successfully,
1901          * the manufacturer mode is disabled with reset and activating the
1902          * downloaded patch.
1903          *
1904          * If the firmware patching fails, the manufacturer mode is
1905          * disabled with reset and deactivating the patch.
1906          *
1907          * If the default patch file is used, no reset is done when disabling
1908          * the manufacturer.
1909          */
1910         while (fw->size > fw_ptr - fw->data) {
1911                 int ret;
1912
1913                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1914                                                  &disable_patch);
1915                 if (ret < 0)
1916                         goto exit_mfg_deactivate;
1917         }
1918
1919         release_firmware(fw);
1920
1921         if (disable_patch)
1922                 goto exit_mfg_disable;
1923
1924         /* Patching completed successfully and disable the manufacturer mode
1925          * with reset and activate the downloaded firmware patches.
1926          */
1927         err = btintel_exit_mfg(hdev, true, true);
1928         if (err)
1929                 return err;
1930
1931         bt_dev_info(hdev, "Intel firmware patch completed and activated");
1932
1933         goto complete;
1934
1935 exit_mfg_disable:
1936         /* Disable the manufacturer mode without reset */
1937         err = btintel_exit_mfg(hdev, false, false);
1938         if (err)
1939                 return err;
1940
1941         bt_dev_info(hdev, "Intel firmware patch completed");
1942
1943         goto complete;
1944
1945 exit_mfg_deactivate:
1946         release_firmware(fw);
1947
1948         /* Patching failed. Disable the manufacturer mode with reset and
1949          * deactivate the downloaded firmware patches.
1950          */
1951         err = btintel_exit_mfg(hdev, true, false);
1952         if (err)
1953                 return err;
1954
1955         bt_dev_info(hdev, "Intel firmware patch completed and deactivated");
1956
1957 complete:
1958         /* Set the event mask for Intel specific vendor events. This enables
1959          * a few extra events that are useful during general operation.
1960          */
1961         btintel_set_event_mask_mfg(hdev, false);
1962
1963         btintel_check_bdaddr(hdev);
1964         return 0;
1965 }
1966
1967 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
1968 {
1969         struct sk_buff *skb;
1970         struct hci_event_hdr *hdr;
1971         struct hci_ev_cmd_complete *evt;
1972
1973         skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_KERNEL);
1974         if (!skb)
1975                 return -ENOMEM;
1976
1977         hdr = skb_put(skb, sizeof(*hdr));
1978         hdr->evt = HCI_EV_CMD_COMPLETE;
1979         hdr->plen = sizeof(*evt) + 1;
1980
1981         evt = skb_put(skb, sizeof(*evt));
1982         evt->ncmd = 0x01;
1983         evt->opcode = cpu_to_le16(opcode);
1984
1985         skb_put_u8(skb, 0x00);
1986
1987         hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
1988
1989         return hci_recv_frame(hdev, skb);
1990 }
1991
1992 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
1993                                  int count)
1994 {
1995         /* When the device is in bootloader mode, then it can send
1996          * events via the bulk endpoint. These events are treated the
1997          * same way as the ones received from the interrupt endpoint.
1998          */
1999         if (test_bit(BTUSB_BOOTLOADER, &data->flags))
2000                 return btusb_recv_intr(data, buffer, count);
2001
2002         return btusb_recv_bulk(data, buffer, count);
2003 }
2004
2005 static void btusb_intel_bootup(struct btusb_data *data, const void *ptr,
2006                                unsigned int len)
2007 {
2008         const struct intel_bootup *evt = ptr;
2009
2010         if (len != sizeof(*evt))
2011                 return;
2012
2013         if (test_and_clear_bit(BTUSB_BOOTING, &data->flags))
2014                 wake_up_bit(&data->flags, BTUSB_BOOTING);
2015 }
2016
2017 static void btusb_intel_secure_send_result(struct btusb_data *data,
2018                                            const void *ptr, unsigned int len)
2019 {
2020         const struct intel_secure_send_result *evt = ptr;
2021
2022         if (len != sizeof(*evt))
2023                 return;
2024
2025         if (evt->result)
2026                 set_bit(BTUSB_FIRMWARE_FAILED, &data->flags);
2027
2028         if (test_and_clear_bit(BTUSB_DOWNLOADING, &data->flags) &&
2029             test_bit(BTUSB_FIRMWARE_LOADED, &data->flags))
2030                 wake_up_bit(&data->flags, BTUSB_DOWNLOADING);
2031 }
2032
2033 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
2034 {
2035         struct btusb_data *data = hci_get_drvdata(hdev);
2036
2037         if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
2038                 struct hci_event_hdr *hdr = (void *)skb->data;
2039
2040                 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
2041                     hdr->plen > 0) {
2042                         const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
2043                         unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
2044
2045                         switch (skb->data[2]) {
2046                         case 0x02:
2047                                 /* When switching to the operational firmware
2048                                  * the device sends a vendor specific event
2049                                  * indicating that the bootup completed.
2050                                  */
2051                                 btusb_intel_bootup(data, ptr, len);
2052                                 break;
2053                         case 0x06:
2054                                 /* When the firmware loading completes the
2055                                  * device sends out a vendor specific event
2056                                  * indicating the result of the firmware
2057                                  * loading.
2058                                  */
2059                                 btusb_intel_secure_send_result(data, ptr, len);
2060                                 break;
2061                         }
2062                 }
2063         }
2064
2065         return hci_recv_frame(hdev, skb);
2066 }
2067
2068 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
2069 {
2070         struct btusb_data *data = hci_get_drvdata(hdev);
2071         struct urb *urb;
2072
2073         BT_DBG("%s", hdev->name);
2074
2075         switch (hci_skb_pkt_type(skb)) {
2076         case HCI_COMMAND_PKT:
2077                 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
2078                         struct hci_command_hdr *cmd = (void *)skb->data;
2079                         __u16 opcode = le16_to_cpu(cmd->opcode);
2080
2081                         /* When in bootloader mode and the command 0xfc09
2082                          * is received, it needs to be send down the
2083                          * bulk endpoint. So allocate a bulk URB instead.
2084                          */
2085                         if (opcode == 0xfc09)
2086                                 urb = alloc_bulk_urb(hdev, skb);
2087                         else
2088                                 urb = alloc_ctrl_urb(hdev, skb);
2089
2090                         /* When the 0xfc01 command is issued to boot into
2091                          * the operational firmware, it will actually not
2092                          * send a command complete event. To keep the flow
2093                          * control working inject that event here.
2094                          */
2095                         if (opcode == 0xfc01)
2096                                 inject_cmd_complete(hdev, opcode);
2097                 } else {
2098                         urb = alloc_ctrl_urb(hdev, skb);
2099                 }
2100                 if (IS_ERR(urb))
2101                         return PTR_ERR(urb);
2102
2103                 hdev->stat.cmd_tx++;
2104                 return submit_or_queue_tx_urb(hdev, urb);
2105
2106         case HCI_ACLDATA_PKT:
2107                 urb = alloc_bulk_urb(hdev, skb);
2108                 if (IS_ERR(urb))
2109                         return PTR_ERR(urb);
2110
2111                 hdev->stat.acl_tx++;
2112                 return submit_or_queue_tx_urb(hdev, urb);
2113
2114         case HCI_SCODATA_PKT:
2115                 if (hci_conn_num(hdev, SCO_LINK) < 1)
2116                         return -ENODEV;
2117
2118                 urb = alloc_isoc_urb(hdev, skb);
2119                 if (IS_ERR(urb))
2120                         return PTR_ERR(urb);
2121
2122                 hdev->stat.sco_tx++;
2123                 return submit_tx_urb(hdev, urb);
2124         }
2125
2126         return -EILSEQ;
2127 }
2128
2129 static bool btusb_setup_intel_new_get_fw_name(struct intel_version *ver,
2130                                              struct intel_boot_params *params,
2131                                              char *fw_name, size_t len,
2132                                              const char *suffix)
2133 {
2134         switch (ver->hw_variant) {
2135         case 0x0b:      /* SfP */
2136         case 0x0c:      /* WsP */
2137                 snprintf(fw_name, len, "intel/ibt-%u-%u.%s",
2138                         le16_to_cpu(ver->hw_variant),
2139                         le16_to_cpu(params->dev_revid),
2140                         suffix);
2141                 break;
2142         case 0x11:      /* JfP */
2143         case 0x12:      /* ThP */
2144         case 0x13:      /* HrP */
2145         case 0x14:      /* CcP */
2146                 snprintf(fw_name, len, "intel/ibt-%u-%u-%u.%s",
2147                         le16_to_cpu(ver->hw_variant),
2148                         le16_to_cpu(ver->hw_revision),
2149                         le16_to_cpu(ver->fw_revision),
2150                         suffix);
2151                 break;
2152         default:
2153                 return false;
2154         }
2155         return true;
2156 }
2157
2158 static int btusb_setup_intel_new(struct hci_dev *hdev)
2159 {
2160         struct btusb_data *data = hci_get_drvdata(hdev);
2161         struct intel_version ver;
2162         struct intel_boot_params params;
2163         const struct firmware *fw;
2164         u32 boot_param;
2165         char fwname[64];
2166         ktime_t calltime, delta, rettime;
2167         unsigned long long duration;
2168         int err;
2169
2170         BT_DBG("%s", hdev->name);
2171
2172         /* Set the default boot parameter to 0x0 and it is updated to
2173          * SKU specific boot parameter after reading Intel_Write_Boot_Params
2174          * command while downloading the firmware.
2175          */
2176         boot_param = 0x00000000;
2177
2178         calltime = ktime_get();
2179
2180         /* Read the Intel version information to determine if the device
2181          * is in bootloader mode or if it already has operational firmware
2182          * loaded.
2183          */
2184         err = btintel_read_version(hdev, &ver);
2185         if (err)
2186                 return err;
2187
2188         /* The hardware platform number has a fixed value of 0x37 and
2189          * for now only accept this single value.
2190          */
2191         if (ver.hw_platform != 0x37) {
2192                 bt_dev_err(hdev, "Unsupported Intel hardware platform (%u)",
2193                            ver.hw_platform);
2194                 return -EINVAL;
2195         }
2196
2197         /* Check for supported iBT hardware variants of this firmware
2198          * loading method.
2199          *
2200          * This check has been put in place to ensure correct forward
2201          * compatibility options when newer hardware variants come along.
2202          */
2203         switch (ver.hw_variant) {
2204         case 0x0b:      /* SfP */
2205         case 0x0c:      /* WsP */
2206         case 0x11:      /* JfP */
2207         case 0x12:      /* ThP */
2208         case 0x13:      /* HrP */
2209         case 0x14:      /* CcP */
2210                 break;
2211         default:
2212                 bt_dev_err(hdev, "Unsupported Intel hardware variant (%u)",
2213                            ver.hw_variant);
2214                 return -EINVAL;
2215         }
2216
2217         btintel_version_info(hdev, &ver);
2218
2219         /* The firmware variant determines if the device is in bootloader
2220          * mode or is running operational firmware. The value 0x06 identifies
2221          * the bootloader and the value 0x23 identifies the operational
2222          * firmware.
2223          *
2224          * When the operational firmware is already present, then only
2225          * the check for valid Bluetooth device address is needed. This
2226          * determines if the device will be added as configured or
2227          * unconfigured controller.
2228          *
2229          * It is not possible to use the Secure Boot Parameters in this
2230          * case since that command is only available in bootloader mode.
2231          */
2232         if (ver.fw_variant == 0x23) {
2233                 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2234                 btintel_check_bdaddr(hdev);
2235                 return 0;
2236         }
2237
2238         /* If the device is not in bootloader mode, then the only possible
2239          * choice is to return an error and abort the device initialization.
2240          */
2241         if (ver.fw_variant != 0x06) {
2242                 bt_dev_err(hdev, "Unsupported Intel firmware variant (%u)",
2243                            ver.fw_variant);
2244                 return -ENODEV;
2245         }
2246
2247         /* Read the secure boot parameters to identify the operating
2248          * details of the bootloader.
2249          */
2250         err = btintel_read_boot_params(hdev, &params);
2251         if (err)
2252                 return err;
2253
2254         /* It is required that every single firmware fragment is acknowledged
2255          * with a command complete event. If the boot parameters indicate
2256          * that this bootloader does not send them, then abort the setup.
2257          */
2258         if (params.limited_cce != 0x00) {
2259                 bt_dev_err(hdev, "Unsupported Intel firmware loading method (%u)",
2260                            params.limited_cce);
2261                 return -EINVAL;
2262         }
2263
2264         /* If the OTP has no valid Bluetooth device address, then there will
2265          * also be no valid address for the operational firmware.
2266          */
2267         if (!bacmp(&params.otp_bdaddr, BDADDR_ANY)) {
2268                 bt_dev_info(hdev, "No device address configured");
2269                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2270         }
2271
2272         /* With this Intel bootloader only the hardware variant and device
2273          * revision information are used to select the right firmware for SfP
2274          * and WsP.
2275          *
2276          * The firmware filename is ibt-<hw_variant>-<dev_revid>.sfi.
2277          *
2278          * Currently the supported hardware variants are:
2279          *   11 (0x0b) for iBT3.0 (LnP/SfP)
2280          *   12 (0x0c) for iBT3.5 (WsP)
2281          *
2282          * For ThP/JfP and for future SKU's, the FW name varies based on HW
2283          * variant, HW revision and FW revision, as these are dependent on CNVi
2284          * and RF Combination.
2285          *
2286          *   17 (0x11) for iBT3.5 (JfP)
2287          *   18 (0x12) for iBT3.5 (ThP)
2288          *
2289          * The firmware file name for these will be
2290          * ibt-<hw_variant>-<hw_revision>-<fw_revision>.sfi.
2291          *
2292          */
2293         err = btusb_setup_intel_new_get_fw_name(&ver, &params, fwname,
2294                                                 sizeof(fwname), "sfi");
2295         if (!err) {
2296                 bt_dev_err(hdev, "Unsupported Intel firmware naming");
2297                 return -EINVAL;
2298         }
2299
2300         err = request_firmware(&fw, fwname, &hdev->dev);
2301         if (err < 0) {
2302                 bt_dev_err(hdev, "Failed to load Intel firmware file (%d)", err);
2303                 return err;
2304         }
2305
2306         bt_dev_info(hdev, "Found device firmware: %s", fwname);
2307
2308         /* Save the DDC file name for later use to apply once the firmware
2309          * downloading is done.
2310          */
2311         err = btusb_setup_intel_new_get_fw_name(&ver, &params, fwname,
2312                                                 sizeof(fwname), "ddc");
2313         if (!err) {
2314                 bt_dev_err(hdev, "Unsupported Intel firmware naming");
2315                 return -EINVAL;
2316         }
2317
2318         if (fw->size < 644) {
2319                 bt_dev_err(hdev, "Invalid size of firmware file (%zu)",
2320                            fw->size);
2321                 err = -EBADF;
2322                 goto done;
2323         }
2324
2325         set_bit(BTUSB_DOWNLOADING, &data->flags);
2326
2327         /* Start firmware downloading and get boot parameter */
2328         err = btintel_download_firmware(hdev, fw, &boot_param);
2329         if (err < 0)
2330                 goto done;
2331
2332         set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2333
2334         bt_dev_info(hdev, "Waiting for firmware download to complete");
2335
2336         /* Before switching the device into operational mode and with that
2337          * booting the loaded firmware, wait for the bootloader notification
2338          * that all fragments have been successfully received.
2339          *
2340          * When the event processing receives the notification, then the
2341          * BTUSB_DOWNLOADING flag will be cleared.
2342          *
2343          * The firmware loading should not take longer than 5 seconds
2344          * and thus just timeout if that happens and fail the setup
2345          * of this device.
2346          */
2347         err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
2348                                   TASK_INTERRUPTIBLE,
2349                                   msecs_to_jiffies(5000));
2350         if (err == -EINTR) {
2351                 bt_dev_err(hdev, "Firmware loading interrupted");
2352                 goto done;
2353         }
2354
2355         if (err) {
2356                 bt_dev_err(hdev, "Firmware loading timeout");
2357                 err = -ETIMEDOUT;
2358                 goto done;
2359         }
2360
2361         if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) {
2362                 bt_dev_err(hdev, "Firmware loading failed");
2363                 err = -ENOEXEC;
2364                 goto done;
2365         }
2366
2367         rettime = ktime_get();
2368         delta = ktime_sub(rettime, calltime);
2369         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2370
2371         bt_dev_info(hdev, "Firmware loaded in %llu usecs", duration);
2372
2373 done:
2374         release_firmware(fw);
2375
2376         if (err < 0)
2377                 return err;
2378
2379         calltime = ktime_get();
2380
2381         set_bit(BTUSB_BOOTING, &data->flags);
2382
2383         err = btintel_send_intel_reset(hdev, boot_param);
2384         if (err)
2385                 return err;
2386
2387         /* The bootloader will not indicate when the device is ready. This
2388          * is done by the operational firmware sending bootup notification.
2389          *
2390          * Booting into operational firmware should not take longer than
2391          * 1 second. However if that happens, then just fail the setup
2392          * since something went wrong.
2393          */
2394         bt_dev_info(hdev, "Waiting for device to boot");
2395
2396         err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING,
2397                                   TASK_INTERRUPTIBLE,
2398                                   msecs_to_jiffies(1000));
2399
2400         if (err == -EINTR) {
2401                 bt_dev_err(hdev, "Device boot interrupted");
2402                 return -EINTR;
2403         }
2404
2405         if (err) {
2406                 bt_dev_err(hdev, "Device boot timeout");
2407                 return -ETIMEDOUT;
2408         }
2409
2410         rettime = ktime_get();
2411         delta = ktime_sub(rettime, calltime);
2412         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2413
2414         bt_dev_info(hdev, "Device booted in %llu usecs", duration);
2415
2416         clear_bit(BTUSB_BOOTLOADER, &data->flags);
2417
2418         /* Once the device is running in operational mode, it needs to apply
2419          * the device configuration (DDC) parameters.
2420          *
2421          * The device can work without DDC parameters, so even if it fails
2422          * to load the file, no need to fail the setup.
2423          */
2424         btintel_load_ddc_config(hdev, fwname);
2425
2426         /* Set the event mask for Intel specific vendor events. This enables
2427          * a few extra events that are useful during general operation. It
2428          * does not enable any debugging related events.
2429          *
2430          * The device will function correctly without these events enabled
2431          * and thus no need to fail the setup.
2432          */
2433         btintel_set_event_mask(hdev, false);
2434
2435         /* Read the Intel version information after loading the FW  */
2436         err = btintel_read_version(hdev, &ver);
2437         if (err)
2438                 return err;
2439
2440         btintel_version_info(hdev, &ver);
2441
2442         return 0;
2443 }
2444
2445 static int btusb_shutdown_intel(struct hci_dev *hdev)
2446 {
2447         struct sk_buff *skb;
2448         long ret;
2449
2450         /* In the shutdown sequence where Bluetooth is turned off followed
2451          * by WiFi being turned off, turning WiFi back on causes issue with
2452          * the RF calibration.
2453          *
2454          * To ensure that any RF activity has been stopped, issue HCI Reset
2455          * command to clear all ongoing activity including advertising,
2456          * scanning etc.
2457          */
2458         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2459         if (IS_ERR(skb)) {
2460                 ret = PTR_ERR(skb);
2461                 bt_dev_err(hdev, "HCI reset during shutdown failed");
2462                 return ret;
2463         }
2464         kfree_skb(skb);
2465
2466         /* Some platforms have an issue with BT LED when the interface is
2467          * down or BT radio is turned off, which takes 5 seconds to BT LED
2468          * goes off. This command turns off the BT LED immediately.
2469          */
2470         skb = __hci_cmd_sync(hdev, 0xfc3f, 0, NULL, HCI_INIT_TIMEOUT);
2471         if (IS_ERR(skb)) {
2472                 ret = PTR_ERR(skb);
2473                 bt_dev_err(hdev, "turning off Intel device LED failed");
2474                 return ret;
2475         }
2476         kfree_skb(skb);
2477
2478         return 0;
2479 }
2480
2481 static int btusb_shutdown_intel_new(struct hci_dev *hdev)
2482 {
2483         struct sk_buff *skb;
2484
2485         /* Send HCI Reset to the controller to stop any BT activity which
2486          * were triggered. This will help to save power and maintain the
2487          * sync b/w Host and controller
2488          */
2489         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2490         if (IS_ERR(skb)) {
2491                 bt_dev_err(hdev, "HCI reset during shutdown failed");
2492                 return PTR_ERR(skb);
2493         }
2494         kfree_skb(skb);
2495
2496         return 0;
2497 }
2498
2499 #ifdef CONFIG_BT_HCIBTUSB_MTK
2500
2501 #define FIRMWARE_MT7663         "mediatek/mt7663pr2h.bin"
2502 #define FIRMWARE_MT7668         "mediatek/mt7668pr2h.bin"
2503
2504 #define HCI_WMT_MAX_EVENT_SIZE          64
2505
2506 enum {
2507         BTMTK_WMT_PATCH_DWNLD = 0x1,
2508         BTMTK_WMT_FUNC_CTRL = 0x6,
2509         BTMTK_WMT_RST = 0x7,
2510         BTMTK_WMT_SEMAPHORE = 0x17,
2511 };
2512
2513 enum {
2514         BTMTK_WMT_INVALID,
2515         BTMTK_WMT_PATCH_UNDONE,
2516         BTMTK_WMT_PATCH_DONE,
2517         BTMTK_WMT_ON_UNDONE,
2518         BTMTK_WMT_ON_DONE,
2519         BTMTK_WMT_ON_PROGRESS,
2520 };
2521
2522 struct btmtk_wmt_hdr {
2523         u8      dir;
2524         u8      op;
2525         __le16  dlen;
2526         u8      flag;
2527 } __packed;
2528
2529 struct btmtk_hci_wmt_cmd {
2530         struct btmtk_wmt_hdr hdr;
2531         u8 data[256];
2532 } __packed;
2533
2534 struct btmtk_hci_wmt_evt {
2535         struct hci_event_hdr hhdr;
2536         struct btmtk_wmt_hdr whdr;
2537 } __packed;
2538
2539 struct btmtk_hci_wmt_evt_funcc {
2540         struct btmtk_hci_wmt_evt hwhdr;
2541         __be16 status;
2542 } __packed;
2543
2544 struct btmtk_tci_sleep {
2545         u8 mode;
2546         __le16 duration;
2547         __le16 host_duration;
2548         u8 host_wakeup_pin;
2549         u8 time_compensation;
2550 } __packed;
2551
2552 struct btmtk_hci_wmt_params {
2553         u8 op;
2554         u8 flag;
2555         u16 dlen;
2556         const void *data;
2557         u32 *status;
2558 };
2559
2560 static void btusb_mtk_wmt_recv(struct urb *urb)
2561 {
2562         struct hci_dev *hdev = urb->context;
2563         struct btusb_data *data = hci_get_drvdata(hdev);
2564         struct hci_event_hdr *hdr;
2565         struct sk_buff *skb;
2566         int err;
2567
2568         if (urb->status == 0 && urb->actual_length > 0) {
2569                 hdev->stat.byte_rx += urb->actual_length;
2570
2571                 /* WMT event shouldn't be fragmented and the size should be
2572                  * less than HCI_WMT_MAX_EVENT_SIZE.
2573                  */
2574                 skb = bt_skb_alloc(HCI_WMT_MAX_EVENT_SIZE, GFP_ATOMIC);
2575                 if (!skb) {
2576                         hdev->stat.err_rx++;
2577                         goto err_out;
2578                 }
2579
2580                 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
2581                 skb_put_data(skb, urb->transfer_buffer, urb->actual_length);
2582
2583                 hdr = (void *)skb->data;
2584                 /* Fix up the vendor event id with 0xff for vendor specific
2585                  * instead of 0xe4 so that event send via monitoring socket can
2586                  * be parsed properly.
2587                  */
2588                 hdr->evt = 0xff;
2589
2590                 /* When someone waits for the WMT event, the skb is being cloned
2591                  * and being processed the events from there then.
2592                  */
2593                 if (test_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags)) {
2594                         data->evt_skb = skb_clone(skb, GFP_KERNEL);
2595                         if (!data->evt_skb)
2596                                 goto err_out;
2597                 }
2598
2599                 err = hci_recv_frame(hdev, skb);
2600                 if (err < 0)
2601                         goto err_free_skb;
2602
2603                 if (test_and_clear_bit(BTUSB_TX_WAIT_VND_EVT,
2604                                        &data->flags)) {
2605                         /* Barrier to sync with other CPUs */
2606                         smp_mb__after_atomic();
2607                         wake_up_bit(&data->flags,
2608                                     BTUSB_TX_WAIT_VND_EVT);
2609                 }
2610 err_out:
2611                 return;
2612 err_free_skb:
2613                 kfree_skb(data->evt_skb);
2614                 data->evt_skb = NULL;
2615                 return;
2616         } else if (urb->status == -ENOENT) {
2617                 /* Avoid suspend failed when usb_kill_urb */
2618                 return;
2619         }
2620
2621         usb_mark_last_busy(data->udev);
2622
2623         /* The URB complete handler is still called with urb->actual_length = 0
2624          * when the event is not available, so we should keep re-submitting
2625          * URB until WMT event returns, Also, It's necessary to wait some time
2626          * between the two consecutive control URBs to relax the target device
2627          * to generate the event. Otherwise, the WMT event cannot return from
2628          * the device successfully.
2629          */
2630         udelay(100);
2631
2632         usb_anchor_urb(urb, &data->ctrl_anchor);
2633         err = usb_submit_urb(urb, GFP_ATOMIC);
2634         if (err < 0) {
2635                 /* -EPERM: urb is being killed;
2636                  * -ENODEV: device got disconnected
2637                  */
2638                 if (err != -EPERM && err != -ENODEV)
2639                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
2640                                    urb, -err);
2641                 usb_unanchor_urb(urb);
2642         }
2643 }
2644
2645 static int btusb_mtk_submit_wmt_recv_urb(struct hci_dev *hdev)
2646 {
2647         struct btusb_data *data = hci_get_drvdata(hdev);
2648         struct usb_ctrlrequest *dr;
2649         unsigned char *buf;
2650         int err, size = 64;
2651         unsigned int pipe;
2652         struct urb *urb;
2653
2654         urb = usb_alloc_urb(0, GFP_KERNEL);
2655         if (!urb)
2656                 return -ENOMEM;
2657
2658         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
2659         if (!dr) {
2660                 usb_free_urb(urb);
2661                 return -ENOMEM;
2662         }
2663
2664         dr->bRequestType = USB_TYPE_VENDOR | USB_DIR_IN;
2665         dr->bRequest     = 1;
2666         dr->wIndex       = cpu_to_le16(0);
2667         dr->wValue       = cpu_to_le16(48);
2668         dr->wLength      = cpu_to_le16(size);
2669
2670         buf = kmalloc(size, GFP_KERNEL);
2671         if (!buf) {
2672                 kfree(dr);
2673                 return -ENOMEM;
2674         }
2675
2676         pipe = usb_rcvctrlpipe(data->udev, 0);
2677
2678         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
2679                              buf, size, btusb_mtk_wmt_recv, hdev);
2680
2681         urb->transfer_flags |= URB_FREE_BUFFER;
2682
2683         usb_anchor_urb(urb, &data->ctrl_anchor);
2684         err = usb_submit_urb(urb, GFP_KERNEL);
2685         if (err < 0) {
2686                 if (err != -EPERM && err != -ENODEV)
2687                         bt_dev_err(hdev, "urb %p submission failed (%d)",
2688                                    urb, -err);
2689                 usb_unanchor_urb(urb);
2690         }
2691
2692         usb_free_urb(urb);
2693
2694         return err;
2695 }
2696
2697 static int btusb_mtk_hci_wmt_sync(struct hci_dev *hdev,
2698                                   struct btmtk_hci_wmt_params *wmt_params)
2699 {
2700         struct btusb_data *data = hci_get_drvdata(hdev);
2701         struct btmtk_hci_wmt_evt_funcc *wmt_evt_funcc;
2702         u32 hlen, status = BTMTK_WMT_INVALID;
2703         struct btmtk_hci_wmt_evt *wmt_evt;
2704         struct btmtk_hci_wmt_cmd wc;
2705         struct btmtk_wmt_hdr *hdr;
2706         int err;
2707
2708         /* Submit control IN URB on demand to process the WMT event */
2709         err = btusb_mtk_submit_wmt_recv_urb(hdev);
2710         if (err < 0)
2711                 return err;
2712
2713         /* Send the WMT command and wait until the WMT event returns */
2714         hlen = sizeof(*hdr) + wmt_params->dlen;
2715         if (hlen > 255)
2716                 return -EINVAL;
2717
2718         hdr = (struct btmtk_wmt_hdr *)&wc;
2719         hdr->dir = 1;
2720         hdr->op = wmt_params->op;
2721         hdr->dlen = cpu_to_le16(wmt_params->dlen + 1);
2722         hdr->flag = wmt_params->flag;
2723         memcpy(wc.data, wmt_params->data, wmt_params->dlen);
2724
2725         set_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2726
2727         err = __hci_cmd_send(hdev, 0xfc6f, hlen, &wc);
2728
2729         if (err < 0) {
2730                 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2731                 return err;
2732         }
2733
2734         /* The vendor specific WMT commands are all answered by a vendor
2735          * specific event and will have the Command Status or Command
2736          * Complete as with usual HCI command flow control.
2737          *
2738          * After sending the command, wait for BTUSB_TX_WAIT_VND_EVT
2739          * state to be cleared. The driver specific event receive routine
2740          * will clear that state and with that indicate completion of the
2741          * WMT command.
2742          */
2743         err = wait_on_bit_timeout(&data->flags, BTUSB_TX_WAIT_VND_EVT,
2744                                   TASK_INTERRUPTIBLE, HCI_INIT_TIMEOUT);
2745         if (err == -EINTR) {
2746                 bt_dev_err(hdev, "Execution of wmt command interrupted");
2747                 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2748                 return err;
2749         }
2750
2751         if (err) {
2752                 bt_dev_err(hdev, "Execution of wmt command timed out");
2753                 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2754                 return -ETIMEDOUT;
2755         }
2756
2757         /* Parse and handle the return WMT event */
2758         wmt_evt = (struct btmtk_hci_wmt_evt *)data->evt_skb->data;
2759         if (wmt_evt->whdr.op != hdr->op) {
2760                 bt_dev_err(hdev, "Wrong op received %d expected %d",
2761                            wmt_evt->whdr.op, hdr->op);
2762                 err = -EIO;
2763                 goto err_free_skb;
2764         }
2765
2766         switch (wmt_evt->whdr.op) {
2767         case BTMTK_WMT_SEMAPHORE:
2768                 if (wmt_evt->whdr.flag == 2)
2769                         status = BTMTK_WMT_PATCH_UNDONE;
2770                 else
2771                         status = BTMTK_WMT_PATCH_DONE;
2772                 break;
2773         case BTMTK_WMT_FUNC_CTRL:
2774                 wmt_evt_funcc = (struct btmtk_hci_wmt_evt_funcc *)wmt_evt;
2775                 if (be16_to_cpu(wmt_evt_funcc->status) == 0x404)
2776                         status = BTMTK_WMT_ON_DONE;
2777                 else if (be16_to_cpu(wmt_evt_funcc->status) == 0x420)
2778                         status = BTMTK_WMT_ON_PROGRESS;
2779                 else
2780                         status = BTMTK_WMT_ON_UNDONE;
2781                 break;
2782         }
2783
2784         if (wmt_params->status)
2785                 *wmt_params->status = status;
2786
2787 err_free_skb:
2788         kfree_skb(data->evt_skb);
2789         data->evt_skb = NULL;
2790
2791         return err;
2792 }
2793
2794 static int btusb_mtk_setup_firmware(struct hci_dev *hdev, const char *fwname)
2795 {
2796         struct btmtk_hci_wmt_params wmt_params;
2797         const struct firmware *fw;
2798         const u8 *fw_ptr;
2799         size_t fw_size;
2800         int err, dlen;
2801         u8 flag;
2802
2803         err = request_firmware(&fw, fwname, &hdev->dev);
2804         if (err < 0) {
2805                 bt_dev_err(hdev, "Failed to load firmware file (%d)", err);
2806                 return err;
2807         }
2808
2809         fw_ptr = fw->data;
2810         fw_size = fw->size;
2811
2812         /* The size of patch header is 30 bytes, should be skip */
2813         if (fw_size < 30) {
2814                 err = -EINVAL;
2815                 goto err_release_fw;
2816         }
2817
2818         fw_size -= 30;
2819         fw_ptr += 30;
2820         flag = 1;
2821
2822         wmt_params.op = BTMTK_WMT_PATCH_DWNLD;
2823         wmt_params.status = NULL;
2824
2825         while (fw_size > 0) {
2826                 dlen = min_t(int, 250, fw_size);
2827
2828                 /* Tell deivice the position in sequence */
2829                 if (fw_size - dlen <= 0)
2830                         flag = 3;
2831                 else if (fw_size < fw->size - 30)
2832                         flag = 2;
2833
2834                 wmt_params.flag = flag;
2835                 wmt_params.dlen = dlen;
2836                 wmt_params.data = fw_ptr;
2837
2838                 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2839                 if (err < 0) {
2840                         bt_dev_err(hdev, "Failed to send wmt patch dwnld (%d)",
2841                                    err);
2842                         goto err_release_fw;
2843                 }
2844
2845                 fw_size -= dlen;
2846                 fw_ptr += dlen;
2847         }
2848
2849         wmt_params.op = BTMTK_WMT_RST;
2850         wmt_params.flag = 4;
2851         wmt_params.dlen = 0;
2852         wmt_params.data = NULL;
2853         wmt_params.status = NULL;
2854
2855         /* Activate funciton the firmware providing to */
2856         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2857         if (err < 0) {
2858                 bt_dev_err(hdev, "Failed to send wmt rst (%d)", err);
2859                 return err;
2860         }
2861
2862         /* Wait a few moments for firmware activation done */
2863         usleep_range(10000, 12000);
2864
2865 err_release_fw:
2866         release_firmware(fw);
2867
2868         return err;
2869 }
2870
2871 static int btusb_mtk_func_query(struct hci_dev *hdev)
2872 {
2873         struct btmtk_hci_wmt_params wmt_params;
2874         int status, err;
2875         u8 param = 0;
2876
2877         /* Query whether the function is enabled */
2878         wmt_params.op = BTMTK_WMT_FUNC_CTRL;
2879         wmt_params.flag = 4;
2880         wmt_params.dlen = sizeof(param);
2881         wmt_params.data = &param;
2882         wmt_params.status = &status;
2883
2884         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2885         if (err < 0) {
2886                 bt_dev_err(hdev, "Failed to query function status (%d)", err);
2887                 return err;
2888         }
2889
2890         return status;
2891 }
2892
2893 static int btusb_mtk_reg_read(struct btusb_data *data, u32 reg, u32 *val)
2894 {
2895         int pipe, err, size = sizeof(u32);
2896         void *buf;
2897
2898         buf = kzalloc(size, GFP_KERNEL);
2899         if (!buf)
2900                 return -ENOMEM;
2901
2902         pipe = usb_rcvctrlpipe(data->udev, 0);
2903         err = usb_control_msg(data->udev, pipe, 0x63,
2904                               USB_TYPE_VENDOR | USB_DIR_IN,
2905                               reg >> 16, reg & 0xffff,
2906                               buf, size, USB_CTRL_SET_TIMEOUT);
2907         if (err < 0)
2908                 goto err_free_buf;
2909
2910         *val = get_unaligned_le32(buf);
2911
2912 err_free_buf:
2913         kfree(buf);
2914
2915         return err;
2916 }
2917
2918 static int btusb_mtk_id_get(struct btusb_data *data, u32 *id)
2919 {
2920         return btusb_mtk_reg_read(data, 0x80000008, id);
2921 }
2922
2923 static int btusb_mtk_setup(struct hci_dev *hdev)
2924 {
2925         struct btusb_data *data = hci_get_drvdata(hdev);
2926         struct btmtk_hci_wmt_params wmt_params;
2927         ktime_t calltime, delta, rettime;
2928         struct btmtk_tci_sleep tci_sleep;
2929         unsigned long long duration;
2930         struct sk_buff *skb;
2931         const char *fwname;
2932         int err, status;
2933         u32 dev_id;
2934         u8 param;
2935
2936         calltime = ktime_get();
2937
2938         err = btusb_mtk_id_get(data, &dev_id);
2939         if (err < 0) {
2940                 bt_dev_err(hdev, "Failed to get device id (%d)", err);
2941                 return err;
2942         }
2943
2944         switch (dev_id) {
2945         case 0x7663:
2946                 fwname = FIRMWARE_MT7663;
2947                 break;
2948         case 0x7668:
2949                 fwname = FIRMWARE_MT7668;
2950                 break;
2951         default:
2952                 bt_dev_err(hdev, "Unsupported support hardware variant (%08x)",
2953                            dev_id);
2954                 return -ENODEV;
2955         }
2956
2957         /* Query whether the firmware is already download */
2958         wmt_params.op = BTMTK_WMT_SEMAPHORE;
2959         wmt_params.flag = 1;
2960         wmt_params.dlen = 0;
2961         wmt_params.data = NULL;
2962         wmt_params.status = &status;
2963
2964         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2965         if (err < 0) {
2966                 bt_dev_err(hdev, "Failed to query firmware status (%d)", err);
2967                 return err;
2968         }
2969
2970         if (status == BTMTK_WMT_PATCH_DONE) {
2971                 bt_dev_info(hdev, "firmware already downloaded");
2972                 goto ignore_setup_fw;
2973         }
2974
2975         /* Setup a firmware which the device definitely requires */
2976         err = btusb_mtk_setup_firmware(hdev, fwname);
2977         if (err < 0)
2978                 return err;
2979
2980 ignore_setup_fw:
2981         err = readx_poll_timeout(btusb_mtk_func_query, hdev, status,
2982                                  status < 0 || status != BTMTK_WMT_ON_PROGRESS,
2983                                  2000, 5000000);
2984         /* -ETIMEDOUT happens */
2985         if (err < 0)
2986                 return err;
2987
2988         /* The other errors happen in btusb_mtk_func_query */
2989         if (status < 0)
2990                 return status;
2991
2992         if (status == BTMTK_WMT_ON_DONE) {
2993                 bt_dev_info(hdev, "function already on");
2994                 goto ignore_func_on;
2995         }
2996
2997         /* Enable Bluetooth protocol */
2998         param = 1;
2999         wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3000         wmt_params.flag = 0;
3001         wmt_params.dlen = sizeof(param);
3002         wmt_params.data = &param;
3003         wmt_params.status = NULL;
3004
3005         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3006         if (err < 0) {
3007                 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
3008                 return err;
3009         }
3010
3011 ignore_func_on:
3012         /* Apply the low power environment setup */
3013         tci_sleep.mode = 0x5;
3014         tci_sleep.duration = cpu_to_le16(0x640);
3015         tci_sleep.host_duration = cpu_to_le16(0x640);
3016         tci_sleep.host_wakeup_pin = 0;
3017         tci_sleep.time_compensation = 0;
3018
3019         skb = __hci_cmd_sync(hdev, 0xfc7a, sizeof(tci_sleep), &tci_sleep,
3020                              HCI_INIT_TIMEOUT);
3021         if (IS_ERR(skb)) {
3022                 err = PTR_ERR(skb);
3023                 bt_dev_err(hdev, "Failed to apply low power setting (%d)", err);
3024                 return err;
3025         }
3026         kfree_skb(skb);
3027
3028         rettime = ktime_get();
3029         delta = ktime_sub(rettime, calltime);
3030         duration = (unsigned long long)ktime_to_ns(delta) >> 10;
3031
3032         bt_dev_info(hdev, "Device setup in %llu usecs", duration);
3033
3034         return 0;
3035 }
3036
3037 static int btusb_mtk_shutdown(struct hci_dev *hdev)
3038 {
3039         struct btmtk_hci_wmt_params wmt_params;
3040         u8 param = 0;
3041         int err;
3042
3043         /* Disable the device */
3044         wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3045         wmt_params.flag = 0;
3046         wmt_params.dlen = sizeof(param);
3047         wmt_params.data = &param;
3048         wmt_params.status = NULL;
3049
3050         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3051         if (err < 0) {
3052                 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
3053                 return err;
3054         }
3055
3056         return 0;
3057 }
3058
3059 MODULE_FIRMWARE(FIRMWARE_MT7663);
3060 MODULE_FIRMWARE(FIRMWARE_MT7668);
3061 #endif
3062
3063 #ifdef CONFIG_PM
3064 /* Configure an out-of-band gpio as wake-up pin, if specified in device tree */
3065 static int marvell_config_oob_wake(struct hci_dev *hdev)
3066 {
3067         struct sk_buff *skb;
3068         struct btusb_data *data = hci_get_drvdata(hdev);
3069         struct device *dev = &data->udev->dev;
3070         u16 pin, gap, opcode;
3071         int ret;
3072         u8 cmd[5];
3073
3074         /* Move on if no wakeup pin specified */
3075         if (of_property_read_u16(dev->of_node, "marvell,wakeup-pin", &pin) ||
3076             of_property_read_u16(dev->of_node, "marvell,wakeup-gap-ms", &gap))
3077                 return 0;
3078
3079         /* Vendor specific command to configure a GPIO as wake-up pin */
3080         opcode = hci_opcode_pack(0x3F, 0x59);
3081         cmd[0] = opcode & 0xFF;
3082         cmd[1] = opcode >> 8;
3083         cmd[2] = 2; /* length of parameters that follow */
3084         cmd[3] = pin;
3085         cmd[4] = gap; /* time in ms, for which wakeup pin should be asserted */
3086
3087         skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
3088         if (!skb) {
3089                 bt_dev_err(hdev, "%s: No memory\n", __func__);
3090                 return -ENOMEM;
3091         }
3092
3093         skb_put_data(skb, cmd, sizeof(cmd));
3094         hci_skb_pkt_type(skb) = HCI_COMMAND_PKT;
3095
3096         ret = btusb_send_frame(hdev, skb);
3097         if (ret) {
3098                 bt_dev_err(hdev, "%s: configuration failed\n", __func__);
3099                 kfree_skb(skb);
3100                 return ret;
3101         }
3102
3103         return 0;
3104 }
3105 #endif
3106
3107 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
3108                                     const bdaddr_t *bdaddr)
3109 {
3110         struct sk_buff *skb;
3111         u8 buf[8];
3112         long ret;
3113
3114         buf[0] = 0xfe;
3115         buf[1] = sizeof(bdaddr_t);
3116         memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
3117
3118         skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
3119         if (IS_ERR(skb)) {
3120                 ret = PTR_ERR(skb);
3121                 bt_dev_err(hdev, "changing Marvell device address failed (%ld)",
3122                            ret);
3123                 return ret;
3124         }
3125         kfree_skb(skb);
3126
3127         return 0;
3128 }
3129
3130 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
3131                                     const bdaddr_t *bdaddr)
3132 {
3133         struct sk_buff *skb;
3134         u8 buf[10];
3135         long ret;
3136
3137         buf[0] = 0x01;
3138         buf[1] = 0x01;
3139         buf[2] = 0x00;
3140         buf[3] = sizeof(bdaddr_t);
3141         memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
3142
3143         skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
3144         if (IS_ERR(skb)) {
3145                 ret = PTR_ERR(skb);
3146                 bt_dev_err(hdev, "Change address command failed (%ld)", ret);
3147                 return ret;
3148         }
3149         kfree_skb(skb);
3150
3151         return 0;
3152 }
3153
3154 #define QCA_DFU_PACKET_LEN      4096
3155
3156 #define QCA_GET_TARGET_VERSION  0x09
3157 #define QCA_CHECK_STATUS        0x05
3158 #define QCA_DFU_DOWNLOAD        0x01
3159
3160 #define QCA_SYSCFG_UPDATED      0x40
3161 #define QCA_PATCH_UPDATED       0x80
3162 #define QCA_DFU_TIMEOUT         3000
3163
3164 struct qca_version {
3165         __le32  rom_version;
3166         __le32  patch_version;
3167         __le32  ram_version;
3168         __le32  ref_clock;
3169         __u8    reserved[4];
3170 } __packed;
3171
3172 struct qca_rampatch_version {
3173         __le16  rom_version;
3174         __le16  patch_version;
3175 } __packed;
3176
3177 struct qca_device_info {
3178         u32     rom_version;
3179         u8      rampatch_hdr;   /* length of header in rampatch */
3180         u8      nvm_hdr;        /* length of header in NVM */
3181         u8      ver_offset;     /* offset of version structure in rampatch */
3182 };
3183
3184 static const struct qca_device_info qca_devices_table[] = {
3185         { 0x00000100, 20, 4, 10 }, /* Rome 1.0 */
3186         { 0x00000101, 20, 4, 10 }, /* Rome 1.1 */
3187         { 0x00000200, 28, 4, 18 }, /* Rome 2.0 */
3188         { 0x00000201, 28, 4, 18 }, /* Rome 2.1 */
3189         { 0x00000300, 28, 4, 18 }, /* Rome 3.0 */
3190         { 0x00000302, 28, 4, 18 }, /* Rome 3.2 */
3191 };
3192
3193 static int btusb_qca_send_vendor_req(struct usb_device *udev, u8 request,
3194                                      void *data, u16 size)
3195 {
3196         int pipe, err;
3197         u8 *buf;
3198
3199         buf = kmalloc(size, GFP_KERNEL);
3200         if (!buf)
3201                 return -ENOMEM;
3202
3203         /* Found some of USB hosts have IOT issues with ours so that we should
3204          * not wait until HCI layer is ready.
3205          */
3206         pipe = usb_rcvctrlpipe(udev, 0);
3207         err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
3208                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
3209         if (err < 0) {
3210                 dev_err(&udev->dev, "Failed to access otp area (%d)", err);
3211                 goto done;
3212         }
3213
3214         memcpy(data, buf, size);
3215
3216 done:
3217         kfree(buf);
3218
3219         return err;
3220 }
3221
3222 static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
3223                                        const struct firmware *firmware,
3224                                        size_t hdr_size)
3225 {
3226         struct btusb_data *btdata = hci_get_drvdata(hdev);
3227         struct usb_device *udev = btdata->udev;
3228         size_t count, size, sent = 0;
3229         int pipe, len, err;
3230         u8 *buf;
3231
3232         buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
3233         if (!buf)
3234                 return -ENOMEM;
3235
3236         count = firmware->size;
3237
3238         size = min_t(size_t, count, hdr_size);
3239         memcpy(buf, firmware->data, size);
3240
3241         /* USB patches should go down to controller through USB path
3242          * because binary format fits to go down through USB channel.
3243          * USB control path is for patching headers and USB bulk is for
3244          * patch body.
3245          */
3246         pipe = usb_sndctrlpipe(udev, 0);
3247         err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
3248                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
3249         if (err < 0) {
3250                 bt_dev_err(hdev, "Failed to send headers (%d)", err);
3251                 goto done;
3252         }
3253
3254         sent += size;
3255         count -= size;
3256
3257         while (count) {
3258                 size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
3259
3260                 memcpy(buf, firmware->data + sent, size);
3261
3262                 pipe = usb_sndbulkpipe(udev, 0x02);
3263                 err = usb_bulk_msg(udev, pipe, buf, size, &len,
3264                                    QCA_DFU_TIMEOUT);
3265                 if (err < 0) {
3266                         bt_dev_err(hdev, "Failed to send body at %zd of %zd (%d)",
3267                                    sent, firmware->size, err);
3268                         break;
3269                 }
3270
3271                 if (size != len) {
3272                         bt_dev_err(hdev, "Failed to get bulk buffer");
3273                         err = -EILSEQ;
3274                         break;
3275                 }
3276
3277                 sent  += size;
3278                 count -= size;
3279         }
3280
3281 done:
3282         kfree(buf);
3283         return err;
3284 }
3285
3286 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
3287                                          struct qca_version *ver,
3288                                          const struct qca_device_info *info)
3289 {
3290         struct qca_rampatch_version *rver;
3291         const struct firmware *fw;
3292         u32 ver_rom, ver_patch;
3293         u16 rver_rom, rver_patch;
3294         char fwname[64];
3295         int err;
3296
3297         ver_rom = le32_to_cpu(ver->rom_version);
3298         ver_patch = le32_to_cpu(ver->patch_version);
3299
3300         snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom);
3301
3302         err = request_firmware(&fw, fwname, &hdev->dev);
3303         if (err) {
3304                 bt_dev_err(hdev, "failed to request rampatch file: %s (%d)",
3305                            fwname, err);
3306                 return err;
3307         }
3308
3309         bt_dev_info(hdev, "using rampatch file: %s", fwname);
3310
3311         rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
3312         rver_rom = le16_to_cpu(rver->rom_version);
3313         rver_patch = le16_to_cpu(rver->patch_version);
3314
3315         bt_dev_info(hdev, "QCA: patch rome 0x%x build 0x%x, "
3316                     "firmware rome 0x%x build 0x%x",
3317                     rver_rom, rver_patch, ver_rom, ver_patch);
3318
3319         if (rver_rom != ver_rom || rver_patch <= ver_patch) {
3320                 bt_dev_err(hdev, "rampatch file version did not match with firmware");
3321                 err = -EINVAL;
3322                 goto done;
3323         }
3324
3325         err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
3326
3327 done:
3328         release_firmware(fw);
3329
3330         return err;
3331 }
3332
3333 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
3334                                     struct qca_version *ver,
3335                                     const struct qca_device_info *info)
3336 {
3337         const struct firmware *fw;
3338         char fwname[64];
3339         int err;
3340
3341         snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x.bin",
3342                  le32_to_cpu(ver->rom_version));
3343
3344         err = request_firmware(&fw, fwname, &hdev->dev);
3345         if (err) {
3346                 bt_dev_err(hdev, "failed to request NVM file: %s (%d)",
3347                            fwname, err);
3348                 return err;
3349         }
3350
3351         bt_dev_info(hdev, "using NVM file: %s", fwname);
3352
3353         err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
3354
3355         release_firmware(fw);
3356
3357         return err;
3358 }
3359
3360 /* identify the ROM version and check whether patches are needed */
3361 static bool btusb_qca_need_patch(struct usb_device *udev)
3362 {
3363         struct qca_version ver;
3364
3365         if (btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3366                                       sizeof(ver)) < 0)
3367                 return false;
3368         /* only low ROM versions need patches */
3369         return !(le32_to_cpu(ver.rom_version) & ~0xffffU);
3370 }
3371
3372 static int btusb_setup_qca(struct hci_dev *hdev)
3373 {
3374         struct btusb_data *btdata = hci_get_drvdata(hdev);
3375         struct usb_device *udev = btdata->udev;
3376         const struct qca_device_info *info = NULL;
3377         struct qca_version ver;
3378         u32 ver_rom;
3379         u8 status;
3380         int i, err;
3381
3382         err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3383                                         sizeof(ver));
3384         if (err < 0)
3385                 return err;
3386
3387         ver_rom = le32_to_cpu(ver.rom_version);
3388         /* Don't care about high ROM versions */
3389         if (ver_rom & ~0xffffU)
3390                 return 0;
3391
3392         for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
3393                 if (ver_rom == qca_devices_table[i].rom_version)
3394                         info = &qca_devices_table[i];
3395         }
3396         if (!info) {
3397                 bt_dev_err(hdev, "don't support firmware rome 0x%x", ver_rom);
3398                 return -ENODEV;
3399         }
3400
3401         err = btusb_qca_send_vendor_req(udev, QCA_CHECK_STATUS, &status,
3402                                         sizeof(status));
3403         if (err < 0)
3404                 return err;
3405
3406         if (!(status & QCA_PATCH_UPDATED)) {
3407                 err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
3408                 if (err < 0)
3409                         return err;
3410         }
3411
3412         if (!(status & QCA_SYSCFG_UPDATED)) {
3413                 err = btusb_setup_qca_load_nvm(hdev, &ver, info);
3414                 if (err < 0)
3415                         return err;
3416         }
3417
3418         return 0;
3419 }
3420
3421 #ifdef CONFIG_BT_HCIBTUSB_BCM
3422 static inline int __set_diag_interface(struct hci_dev *hdev)
3423 {
3424         struct btusb_data *data = hci_get_drvdata(hdev);
3425         struct usb_interface *intf = data->diag;
3426         int i;
3427
3428         if (!data->diag)
3429                 return -ENODEV;
3430
3431         data->diag_tx_ep = NULL;
3432         data->diag_rx_ep = NULL;
3433
3434         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
3435                 struct usb_endpoint_descriptor *ep_desc;
3436
3437                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
3438
3439                 if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
3440                         data->diag_tx_ep = ep_desc;
3441                         continue;
3442                 }
3443
3444                 if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
3445                         data->diag_rx_ep = ep_desc;
3446                         continue;
3447                 }
3448         }
3449
3450         if (!data->diag_tx_ep || !data->diag_rx_ep) {
3451                 bt_dev_err(hdev, "invalid diagnostic descriptors");
3452                 return -ENODEV;
3453         }
3454
3455         return 0;
3456 }
3457
3458 static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable)
3459 {
3460         struct btusb_data *data = hci_get_drvdata(hdev);
3461         struct sk_buff *skb;
3462         struct urb *urb;
3463         unsigned int pipe;
3464
3465         if (!data->diag_tx_ep)
3466                 return ERR_PTR(-ENODEV);
3467
3468         urb = usb_alloc_urb(0, GFP_KERNEL);
3469         if (!urb)
3470                 return ERR_PTR(-ENOMEM);
3471
3472         skb = bt_skb_alloc(2, GFP_KERNEL);
3473         if (!skb) {
3474                 usb_free_urb(urb);
3475                 return ERR_PTR(-ENOMEM);
3476         }
3477
3478         skb_put_u8(skb, 0xf0);
3479         skb_put_u8(skb, enable);
3480
3481         pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress);
3482
3483         usb_fill_bulk_urb(urb, data->udev, pipe,
3484                           skb->data, skb->len, btusb_tx_complete, skb);
3485
3486         skb->dev = (void *)hdev;
3487
3488         return urb;
3489 }
3490
3491 static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable)
3492 {
3493         struct btusb_data *data = hci_get_drvdata(hdev);
3494         struct urb *urb;
3495
3496         if (!data->diag)
3497                 return -ENODEV;
3498
3499         if (!test_bit(HCI_RUNNING, &hdev->flags))
3500                 return -ENETDOWN;
3501
3502         urb = alloc_diag_urb(hdev, enable);
3503         if (IS_ERR(urb))
3504                 return PTR_ERR(urb);
3505
3506         return submit_or_queue_tx_urb(hdev, urb);
3507 }
3508 #endif
3509
3510 #ifdef CONFIG_PM
3511 static irqreturn_t btusb_oob_wake_handler(int irq, void *priv)
3512 {
3513         struct btusb_data *data = priv;
3514
3515         pm_wakeup_event(&data->udev->dev, 0);
3516         pm_system_wakeup();
3517
3518         /* Disable only if not already disabled (keep it balanced) */
3519         if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
3520                 disable_irq_nosync(irq);
3521                 disable_irq_wake(irq);
3522         }
3523         return IRQ_HANDLED;
3524 }
3525
3526 static const struct of_device_id btusb_match_table[] = {
3527         { .compatible = "usb1286,204e" },
3528         { .compatible = "usbcf3,e300" }, /* QCA6174A */
3529         { .compatible = "usb4ca,301a" }, /* QCA6174A (Lite-On) */
3530         { }
3531 };
3532 MODULE_DEVICE_TABLE(of, btusb_match_table);
3533
3534 /* Use an oob wakeup pin? */
3535 static int btusb_config_oob_wake(struct hci_dev *hdev)
3536 {
3537         struct btusb_data *data = hci_get_drvdata(hdev);
3538         struct device *dev = &data->udev->dev;
3539         int irq, ret;
3540
3541         clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
3542
3543         if (!of_match_device(btusb_match_table, dev))
3544                 return 0;
3545
3546         /* Move on if no IRQ specified */
3547         irq = of_irq_get_byname(dev->of_node, "wakeup");
3548         if (irq <= 0) {
3549                 bt_dev_dbg(hdev, "%s: no OOB Wakeup IRQ in DT", __func__);
3550                 return 0;
3551         }
3552
3553         irq_set_status_flags(irq, IRQ_NOAUTOEN);
3554         ret = devm_request_irq(&hdev->dev, irq, btusb_oob_wake_handler,
3555                                0, "OOB Wake-on-BT", data);
3556         if (ret) {
3557                 bt_dev_err(hdev, "%s: IRQ request failed", __func__);
3558                 return ret;
3559         }
3560
3561         ret = device_init_wakeup(dev, true);
3562         if (ret) {
3563                 bt_dev_err(hdev, "%s: failed to init_wakeup", __func__);
3564                 return ret;
3565         }
3566
3567         data->oob_wake_irq = irq;
3568         bt_dev_info(hdev, "OOB Wake-on-BT configured at IRQ %u", irq);
3569         return 0;
3570 }
3571 #endif
3572
3573 static void btusb_check_needs_reset_resume(struct usb_interface *intf)
3574 {
3575         if (dmi_check_system(btusb_needs_reset_resume_table))
3576                 interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME;
3577 }
3578
3579 static int btusb_probe(struct usb_interface *intf,
3580                        const struct usb_device_id *id)
3581 {
3582         struct usb_endpoint_descriptor *ep_desc;
3583         struct gpio_desc *reset_gpio;
3584         struct btusb_data *data;
3585         struct hci_dev *hdev;
3586         unsigned ifnum_base;
3587         int i, err;
3588
3589         BT_DBG("intf %p id %p", intf, id);
3590
3591         /* interface numbers are hardcoded in the spec */
3592         if (intf->cur_altsetting->desc.bInterfaceNumber != 0) {
3593                 if (!(id->driver_info & BTUSB_IFNUM_2))
3594                         return -ENODEV;
3595                 if (intf->cur_altsetting->desc.bInterfaceNumber != 2)
3596                         return -ENODEV;
3597         }
3598
3599         ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber;
3600
3601         if (!id->driver_info) {
3602                 const struct usb_device_id *match;
3603
3604                 match = usb_match_id(intf, blacklist_table);
3605                 if (match)
3606                         id = match;
3607         }
3608
3609         if (id->driver_info == BTUSB_IGNORE)
3610                 return -ENODEV;
3611
3612         if (id->driver_info & BTUSB_ATH3012) {
3613                 struct usb_device *udev = interface_to_usbdev(intf);
3614
3615                 /* Old firmware would otherwise let ath3k driver load
3616                  * patch and sysconfig files
3617                  */
3618                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001 &&
3619                     !btusb_qca_need_patch(udev))
3620                         return -ENODEV;
3621         }
3622
3623         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
3624         if (!data)
3625                 return -ENOMEM;
3626
3627         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
3628                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
3629
3630                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
3631                         data->intr_ep = ep_desc;
3632                         continue;
3633                 }
3634
3635                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
3636                         data->bulk_tx_ep = ep_desc;
3637                         continue;
3638                 }
3639
3640                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
3641                         data->bulk_rx_ep = ep_desc;
3642                         continue;
3643                 }
3644         }
3645
3646         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
3647                 return -ENODEV;
3648
3649         if (id->driver_info & BTUSB_AMP) {
3650                 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
3651                 data->cmdreq = 0x2b;
3652         } else {
3653                 data->cmdreq_type = USB_TYPE_CLASS;
3654                 data->cmdreq = 0x00;
3655         }
3656
3657         data->udev = interface_to_usbdev(intf);
3658         data->intf = intf;
3659
3660         INIT_WORK(&data->work, btusb_work);
3661         INIT_WORK(&data->waker, btusb_waker);
3662         init_usb_anchor(&data->deferred);
3663         init_usb_anchor(&data->tx_anchor);
3664         spin_lock_init(&data->txlock);
3665
3666         init_usb_anchor(&data->intr_anchor);
3667         init_usb_anchor(&data->bulk_anchor);
3668         init_usb_anchor(&data->isoc_anchor);
3669         init_usb_anchor(&data->diag_anchor);
3670         init_usb_anchor(&data->ctrl_anchor);
3671         spin_lock_init(&data->rxlock);
3672
3673         if (id->driver_info & BTUSB_INTEL_NEW) {
3674                 data->recv_event = btusb_recv_event_intel;
3675                 data->recv_bulk = btusb_recv_bulk_intel;
3676                 set_bit(BTUSB_BOOTLOADER, &data->flags);
3677         } else {
3678                 data->recv_event = hci_recv_frame;
3679                 data->recv_bulk = btusb_recv_bulk;
3680         }
3681
3682         hdev = hci_alloc_dev();
3683         if (!hdev)
3684                 return -ENOMEM;
3685
3686         hdev->bus = HCI_USB;
3687         hci_set_drvdata(hdev, data);
3688
3689         if (id->driver_info & BTUSB_AMP)
3690                 hdev->dev_type = HCI_AMP;
3691         else
3692                 hdev->dev_type = HCI_PRIMARY;
3693
3694         data->hdev = hdev;
3695
3696         SET_HCIDEV_DEV(hdev, &intf->dev);
3697
3698         reset_gpio = gpiod_get_optional(&data->udev->dev, "reset",
3699                                         GPIOD_OUT_LOW);
3700         if (IS_ERR(reset_gpio)) {
3701                 err = PTR_ERR(reset_gpio);
3702                 goto out_free_dev;
3703         } else if (reset_gpio) {
3704                 data->reset_gpio = reset_gpio;
3705         }
3706
3707         hdev->open   = btusb_open;
3708         hdev->close  = btusb_close;
3709         hdev->flush  = btusb_flush;
3710         hdev->send   = btusb_send_frame;
3711         hdev->notify = btusb_notify;
3712
3713 #ifdef CONFIG_PM
3714         err = btusb_config_oob_wake(hdev);
3715         if (err)
3716                 goto out_free_dev;
3717
3718         /* Marvell devices may need a specific chip configuration */
3719         if (id->driver_info & BTUSB_MARVELL && data->oob_wake_irq) {
3720                 err = marvell_config_oob_wake(hdev);
3721                 if (err)
3722                         goto out_free_dev;
3723         }
3724 #endif
3725         if (id->driver_info & BTUSB_CW6622)
3726                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
3727
3728         if (id->driver_info & BTUSB_BCM2045)
3729                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
3730
3731         if (id->driver_info & BTUSB_BCM92035)
3732                 hdev->setup = btusb_setup_bcm92035;
3733
3734 #ifdef CONFIG_BT_HCIBTUSB_BCM
3735         if (id->driver_info & BTUSB_BCM_PATCHRAM) {
3736                 hdev->manufacturer = 15;
3737                 hdev->setup = btbcm_setup_patchram;
3738                 hdev->set_diag = btusb_bcm_set_diag;
3739                 hdev->set_bdaddr = btbcm_set_bdaddr;
3740
3741                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
3742                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
3743         }
3744
3745         if (id->driver_info & BTUSB_BCM_APPLE) {
3746                 hdev->manufacturer = 15;
3747                 hdev->setup = btbcm_setup_apple;
3748                 hdev->set_diag = btusb_bcm_set_diag;
3749
3750                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
3751                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
3752         }
3753 #endif
3754
3755         if (id->driver_info & BTUSB_INTEL) {
3756                 hdev->manufacturer = 2;
3757                 hdev->setup = btusb_setup_intel;
3758                 hdev->shutdown = btusb_shutdown_intel;
3759                 hdev->set_diag = btintel_set_diag_mfg;
3760                 hdev->set_bdaddr = btintel_set_bdaddr;
3761                 hdev->cmd_timeout = btusb_intel_cmd_timeout;
3762                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3763                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3764                 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
3765         }
3766
3767         if (id->driver_info & BTUSB_INTEL_NEW) {
3768                 hdev->manufacturer = 2;
3769                 hdev->send = btusb_send_frame_intel;
3770                 hdev->setup = btusb_setup_intel_new;
3771                 hdev->shutdown = btusb_shutdown_intel_new;
3772                 hdev->hw_error = btintel_hw_error;
3773                 hdev->set_diag = btintel_set_diag;
3774                 hdev->set_bdaddr = btintel_set_bdaddr;
3775                 hdev->cmd_timeout = btusb_intel_cmd_timeout;
3776                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3777                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3778                 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
3779         }
3780
3781         if (id->driver_info & BTUSB_MARVELL)
3782                 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
3783
3784 #ifdef CONFIG_BT_HCIBTUSB_MTK
3785         if (id->driver_info & BTUSB_MEDIATEK) {
3786                 hdev->setup = btusb_mtk_setup;
3787                 hdev->shutdown = btusb_mtk_shutdown;
3788                 hdev->manufacturer = 70;
3789                 set_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks);
3790         }
3791 #endif
3792
3793         if (id->driver_info & BTUSB_SWAVE) {
3794                 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
3795                 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
3796         }
3797
3798         if (id->driver_info & BTUSB_INTEL_BOOT) {
3799                 hdev->manufacturer = 2;
3800                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3801         }
3802
3803         if (id->driver_info & BTUSB_ATH3012) {
3804                 data->setup_on_usb = btusb_setup_qca;
3805                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
3806                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3807                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3808         }
3809
3810         if (id->driver_info & BTUSB_QCA_ROME) {
3811                 data->setup_on_usb = btusb_setup_qca;
3812                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
3813                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3814                 btusb_check_needs_reset_resume(intf);
3815         }
3816
3817 #ifdef CONFIG_BT_HCIBTUSB_RTL
3818         if (id->driver_info & BTUSB_REALTEK) {
3819                 hdev->setup = btrtl_setup_realtek;
3820                 hdev->shutdown = btrtl_shutdown_realtek;
3821                 hdev->cmd_timeout = btusb_rtl_cmd_timeout;
3822
3823                 /* Realtek devices lose their updated firmware over global
3824                  * suspend that means host doesn't send SET_FEATURE
3825                  * (DEVICE_REMOTE_WAKEUP)
3826                  */
3827                 set_bit(BTUSB_WAKEUP_DISABLE, &data->flags);
3828         }
3829 #endif
3830
3831         if (id->driver_info & BTUSB_AMP) {
3832                 /* AMP controllers do not support SCO packets */
3833                 data->isoc = NULL;
3834         } else {
3835                 /* Interface orders are hardcoded in the specification */
3836                 data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1);
3837                 data->isoc_ifnum = ifnum_base + 1;
3838         }
3839
3840         if (!reset)
3841                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3842
3843         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
3844                 if (!disable_scofix)
3845                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
3846         }
3847
3848         if (id->driver_info & BTUSB_BROKEN_ISOC)
3849                 data->isoc = NULL;
3850
3851         if (id->driver_info & BTUSB_DIGIANSWER) {
3852                 data->cmdreq_type = USB_TYPE_VENDOR;
3853                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3854         }
3855
3856         if (id->driver_info & BTUSB_CSR) {
3857                 struct usb_device *udev = data->udev;
3858                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
3859
3860                 /* Old firmware would otherwise execute USB reset */
3861                 if (bcdDevice < 0x117)
3862                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3863
3864                 /* Fake CSR devices with broken commands */
3865                 if (bcdDevice <= 0x100 || bcdDevice == 0x134)
3866                         hdev->setup = btusb_setup_csr;
3867
3868                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3869         }
3870
3871         if (id->driver_info & BTUSB_SNIFFER) {
3872                 struct usb_device *udev = data->udev;
3873
3874                 /* New sniffer firmware has crippled HCI interface */
3875                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
3876                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3877         }
3878
3879         if (id->driver_info & BTUSB_INTEL_BOOT) {
3880                 /* A bug in the bootloader causes that interrupt interface is
3881                  * only enabled after receiving SetInterface(0, AltSetting=0).
3882                  */
3883                 err = usb_set_interface(data->udev, 0, 0);
3884                 if (err < 0) {
3885                         BT_ERR("failed to set interface 0, alt 0 %d", err);
3886                         goto out_free_dev;
3887                 }
3888         }
3889
3890         if (data->isoc) {
3891                 err = usb_driver_claim_interface(&btusb_driver,
3892                                                  data->isoc, data);
3893                 if (err < 0)
3894                         goto out_free_dev;
3895         }
3896
3897 #ifdef CONFIG_BT_HCIBTUSB_BCM
3898         if (data->diag) {
3899                 if (!usb_driver_claim_interface(&btusb_driver,
3900                                                 data->diag, data))
3901                         __set_diag_interface(hdev);
3902                 else
3903                         data->diag = NULL;
3904         }
3905 #endif
3906
3907         if (enable_autosuspend)
3908                 usb_enable_autosuspend(data->udev);
3909
3910         err = hci_register_dev(hdev);
3911         if (err < 0)
3912                 goto out_free_dev;
3913
3914         usb_set_intfdata(intf, data);
3915
3916         return 0;
3917
3918 out_free_dev:
3919         if (data->reset_gpio)
3920                 gpiod_put(data->reset_gpio);
3921         hci_free_dev(hdev);
3922         return err;
3923 }
3924
3925 static void btusb_disconnect(struct usb_interface *intf)
3926 {
3927         struct btusb_data *data = usb_get_intfdata(intf);
3928         struct hci_dev *hdev;
3929
3930         BT_DBG("intf %p", intf);
3931
3932         if (!data)
3933                 return;
3934
3935         hdev = data->hdev;
3936         usb_set_intfdata(data->intf, NULL);
3937
3938         if (data->isoc)
3939                 usb_set_intfdata(data->isoc, NULL);
3940
3941         if (data->diag)
3942                 usb_set_intfdata(data->diag, NULL);
3943
3944         hci_unregister_dev(hdev);
3945
3946         if (intf == data->intf) {
3947                 if (data->isoc)
3948                         usb_driver_release_interface(&btusb_driver, data->isoc);
3949                 if (data->diag)
3950                         usb_driver_release_interface(&btusb_driver, data->diag);
3951         } else if (intf == data->isoc) {
3952                 if (data->diag)
3953                         usb_driver_release_interface(&btusb_driver, data->diag);
3954                 usb_driver_release_interface(&btusb_driver, data->intf);
3955         } else if (intf == data->diag) {
3956                 usb_driver_release_interface(&btusb_driver, data->intf);
3957                 if (data->isoc)
3958                         usb_driver_release_interface(&btusb_driver, data->isoc);
3959         }
3960
3961         if (data->oob_wake_irq)
3962                 device_init_wakeup(&data->udev->dev, false);
3963
3964         if (data->reset_gpio)
3965                 gpiod_put(data->reset_gpio);
3966
3967         hci_free_dev(hdev);
3968 }
3969
3970 #ifdef CONFIG_PM
3971 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
3972 {
3973         struct btusb_data *data = usb_get_intfdata(intf);
3974
3975         BT_DBG("intf %p", intf);
3976
3977         if (data->suspend_count++)
3978                 return 0;
3979
3980         spin_lock_irq(&data->txlock);
3981         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
3982                 set_bit(BTUSB_SUSPENDING, &data->flags);
3983                 spin_unlock_irq(&data->txlock);
3984         } else {
3985                 spin_unlock_irq(&data->txlock);
3986                 data->suspend_count--;
3987                 return -EBUSY;
3988         }
3989
3990         cancel_work_sync(&data->work);
3991
3992         btusb_stop_traffic(data);
3993         usb_kill_anchored_urbs(&data->tx_anchor);
3994
3995         if (data->oob_wake_irq && device_may_wakeup(&data->udev->dev)) {
3996                 set_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
3997                 enable_irq_wake(data->oob_wake_irq);
3998                 enable_irq(data->oob_wake_irq);
3999         }
4000
4001         /* For global suspend, Realtek devices lose the loaded fw
4002          * in them. But for autosuspend, firmware should remain.
4003          * Actually, it depends on whether the usb host sends
4004          * set feature (enable wakeup) or not.
4005          */
4006         if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags)) {
4007                 if (PMSG_IS_AUTO(message) &&
4008                     device_can_wakeup(&data->udev->dev))
4009                         data->udev->do_remote_wakeup = 1;
4010                 else if (!PMSG_IS_AUTO(message))
4011                         data->udev->reset_resume = 1;
4012         }
4013
4014         return 0;
4015 }
4016
4017 static void play_deferred(struct btusb_data *data)
4018 {
4019         struct urb *urb;
4020         int err;
4021
4022         while ((urb = usb_get_from_anchor(&data->deferred))) {
4023                 usb_anchor_urb(urb, &data->tx_anchor);
4024
4025                 err = usb_submit_urb(urb, GFP_ATOMIC);
4026                 if (err < 0) {
4027                         if (err != -EPERM && err != -ENODEV)
4028                                 BT_ERR("%s urb %p submission failed (%d)",
4029                                        data->hdev->name, urb, -err);
4030                         kfree(urb->setup_packet);
4031                         usb_unanchor_urb(urb);
4032                         usb_free_urb(urb);
4033                         break;
4034                 }
4035
4036                 data->tx_in_flight++;
4037                 usb_free_urb(urb);
4038         }
4039
4040         /* Cleanup the rest deferred urbs. */
4041         while ((urb = usb_get_from_anchor(&data->deferred))) {
4042                 kfree(urb->setup_packet);
4043                 usb_free_urb(urb);
4044         }
4045 }
4046
4047 static int btusb_resume(struct usb_interface *intf)
4048 {
4049         struct btusb_data *data = usb_get_intfdata(intf);
4050         struct hci_dev *hdev = data->hdev;
4051         int err = 0;
4052
4053         BT_DBG("intf %p", intf);
4054
4055         if (--data->suspend_count)
4056                 return 0;
4057
4058         /* Disable only if not already disabled (keep it balanced) */
4059         if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
4060                 disable_irq(data->oob_wake_irq);
4061                 disable_irq_wake(data->oob_wake_irq);
4062         }
4063
4064         if (!test_bit(HCI_RUNNING, &hdev->flags))
4065                 goto done;
4066
4067         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
4068                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
4069                 if (err < 0) {
4070                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
4071                         goto failed;
4072                 }
4073         }
4074
4075         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
4076                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
4077                 if (err < 0) {
4078                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
4079                         goto failed;
4080                 }
4081
4082                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
4083         }
4084
4085         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
4086                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
4087                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
4088                 else
4089                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
4090         }
4091
4092         spin_lock_irq(&data->txlock);
4093         play_deferred(data);
4094         clear_bit(BTUSB_SUSPENDING, &data->flags);
4095         spin_unlock_irq(&data->txlock);
4096         schedule_work(&data->work);
4097
4098         return 0;
4099
4100 failed:
4101         usb_scuttle_anchored_urbs(&data->deferred);
4102 done:
4103         spin_lock_irq(&data->txlock);
4104         clear_bit(BTUSB_SUSPENDING, &data->flags);
4105         spin_unlock_irq(&data->txlock);
4106
4107         return err;
4108 }
4109 #endif
4110
4111 static struct usb_driver btusb_driver = {
4112         .name           = "btusb",
4113         .probe          = btusb_probe,
4114         .disconnect     = btusb_disconnect,
4115 #ifdef CONFIG_PM
4116         .suspend        = btusb_suspend,
4117         .resume         = btusb_resume,
4118 #endif
4119         .id_table       = btusb_table,
4120         .supports_autosuspend = 1,
4121         .disable_hub_initiated_lpm = 1,
4122 };
4123
4124 module_usb_driver(btusb_driver);
4125
4126 module_param(disable_scofix, bool, 0644);
4127 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
4128
4129 module_param(force_scofix, bool, 0644);
4130 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
4131
4132 module_param(enable_autosuspend, bool, 0644);
4133 MODULE_PARM_DESC(enable_autosuspend, "Enable USB autosuspend by default");
4134
4135 module_param(reset, bool, 0644);
4136 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
4137
4138 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
4139 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
4140 MODULE_VERSION(VERSION);
4141 MODULE_LICENSE("GPL");