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                         goto setup_fail;
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 setup_fail:
1243         usb_autopm_put_interface(data->intf);
1244         return err;
1245 }
1246
1247 static void btusb_stop_traffic(struct btusb_data *data)
1248 {
1249         usb_kill_anchored_urbs(&data->intr_anchor);
1250         usb_kill_anchored_urbs(&data->bulk_anchor);
1251         usb_kill_anchored_urbs(&data->isoc_anchor);
1252         usb_kill_anchored_urbs(&data->diag_anchor);
1253         usb_kill_anchored_urbs(&data->ctrl_anchor);
1254 }
1255
1256 static int btusb_close(struct hci_dev *hdev)
1257 {
1258         struct btusb_data *data = hci_get_drvdata(hdev);
1259         int err;
1260
1261         BT_DBG("%s", hdev->name);
1262
1263         cancel_work_sync(&data->work);
1264         cancel_work_sync(&data->waker);
1265
1266         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1267         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1268         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1269         clear_bit(BTUSB_DIAG_RUNNING, &data->flags);
1270
1271         btusb_stop_traffic(data);
1272         btusb_free_frags(data);
1273
1274         err = usb_autopm_get_interface(data->intf);
1275         if (err < 0)
1276                 goto failed;
1277
1278         data->intf->needs_remote_wakeup = 0;
1279
1280         /* Enable remote wake up for auto-suspend */
1281         if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags))
1282                 data->intf->needs_remote_wakeup = 1;
1283
1284         usb_autopm_put_interface(data->intf);
1285
1286 failed:
1287         usb_scuttle_anchored_urbs(&data->deferred);
1288         return 0;
1289 }
1290
1291 static int btusb_flush(struct hci_dev *hdev)
1292 {
1293         struct btusb_data *data = hci_get_drvdata(hdev);
1294
1295         BT_DBG("%s", hdev->name);
1296
1297         usb_kill_anchored_urbs(&data->tx_anchor);
1298         btusb_free_frags(data);
1299
1300         return 0;
1301 }
1302
1303 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
1304 {
1305         struct btusb_data *data = hci_get_drvdata(hdev);
1306         struct usb_ctrlrequest *dr;
1307         struct urb *urb;
1308         unsigned int pipe;
1309
1310         urb = usb_alloc_urb(0, GFP_KERNEL);
1311         if (!urb)
1312                 return ERR_PTR(-ENOMEM);
1313
1314         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
1315         if (!dr) {
1316                 usb_free_urb(urb);
1317                 return ERR_PTR(-ENOMEM);
1318         }
1319
1320         dr->bRequestType = data->cmdreq_type;
1321         dr->bRequest     = data->cmdreq;
1322         dr->wIndex       = 0;
1323         dr->wValue       = 0;
1324         dr->wLength      = __cpu_to_le16(skb->len);
1325
1326         pipe = usb_sndctrlpipe(data->udev, 0x00);
1327
1328         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
1329                              skb->data, skb->len, btusb_tx_complete, skb);
1330
1331         skb->dev = (void *)hdev;
1332
1333         return urb;
1334 }
1335
1336 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
1337 {
1338         struct btusb_data *data = hci_get_drvdata(hdev);
1339         struct urb *urb;
1340         unsigned int pipe;
1341
1342         if (!data->bulk_tx_ep)
1343                 return ERR_PTR(-ENODEV);
1344
1345         urb = usb_alloc_urb(0, GFP_KERNEL);
1346         if (!urb)
1347                 return ERR_PTR(-ENOMEM);
1348
1349         pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1350
1351         usb_fill_bulk_urb(urb, data->udev, pipe,
1352                           skb->data, skb->len, btusb_tx_complete, skb);
1353
1354         skb->dev = (void *)hdev;
1355
1356         return urb;
1357 }
1358
1359 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1360 {
1361         struct btusb_data *data = hci_get_drvdata(hdev);
1362         struct urb *urb;
1363         unsigned int pipe;
1364
1365         if (!data->isoc_tx_ep)
1366                 return ERR_PTR(-ENODEV);
1367
1368         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1369         if (!urb)
1370                 return ERR_PTR(-ENOMEM);
1371
1372         pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1373
1374         usb_fill_int_urb(urb, data->udev, pipe,
1375                          skb->data, skb->len, btusb_isoc_tx_complete,
1376                          skb, data->isoc_tx_ep->bInterval);
1377
1378         urb->transfer_flags  = URB_ISO_ASAP;
1379
1380         __fill_isoc_descriptor(urb, skb->len,
1381                                le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1382
1383         skb->dev = (void *)hdev;
1384
1385         return urb;
1386 }
1387
1388 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1389 {
1390         struct btusb_data *data = hci_get_drvdata(hdev);
1391         int err;
1392
1393         usb_anchor_urb(urb, &data->tx_anchor);
1394
1395         err = usb_submit_urb(urb, GFP_KERNEL);
1396         if (err < 0) {
1397                 if (err != -EPERM && err != -ENODEV)
1398                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1399                                    urb, -err);
1400                 kfree(urb->setup_packet);
1401                 usb_unanchor_urb(urb);
1402         } else {
1403                 usb_mark_last_busy(data->udev);
1404         }
1405
1406         usb_free_urb(urb);
1407         return err;
1408 }
1409
1410 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1411 {
1412         struct btusb_data *data = hci_get_drvdata(hdev);
1413         unsigned long flags;
1414         bool suspending;
1415
1416         spin_lock_irqsave(&data->txlock, flags);
1417         suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1418         if (!suspending)
1419                 data->tx_in_flight++;
1420         spin_unlock_irqrestore(&data->txlock, flags);
1421
1422         if (!suspending)
1423                 return submit_tx_urb(hdev, urb);
1424
1425         usb_anchor_urb(urb, &data->deferred);
1426         schedule_work(&data->waker);
1427
1428         usb_free_urb(urb);
1429         return 0;
1430 }
1431
1432 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1433 {
1434         struct urb *urb;
1435
1436         BT_DBG("%s", hdev->name);
1437
1438         switch (hci_skb_pkt_type(skb)) {
1439         case HCI_COMMAND_PKT:
1440                 urb = alloc_ctrl_urb(hdev, skb);
1441                 if (IS_ERR(urb))
1442                         return PTR_ERR(urb);
1443
1444                 hdev->stat.cmd_tx++;
1445                 return submit_or_queue_tx_urb(hdev, urb);
1446
1447         case HCI_ACLDATA_PKT:
1448                 urb = alloc_bulk_urb(hdev, skb);
1449                 if (IS_ERR(urb))
1450                         return PTR_ERR(urb);
1451
1452                 hdev->stat.acl_tx++;
1453                 return submit_or_queue_tx_urb(hdev, urb);
1454
1455         case HCI_SCODATA_PKT:
1456                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1457                         return -ENODEV;
1458
1459                 urb = alloc_isoc_urb(hdev, skb);
1460                 if (IS_ERR(urb))
1461                         return PTR_ERR(urb);
1462
1463                 hdev->stat.sco_tx++;
1464                 return submit_tx_urb(hdev, urb);
1465         }
1466
1467         return -EILSEQ;
1468 }
1469
1470 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1471 {
1472         struct btusb_data *data = hci_get_drvdata(hdev);
1473
1474         BT_DBG("%s evt %d", hdev->name, evt);
1475
1476         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1477                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1478                 schedule_work(&data->work);
1479         }
1480 }
1481
1482 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1483 {
1484         struct btusb_data *data = hci_get_drvdata(hdev);
1485         struct usb_interface *intf = data->isoc;
1486         struct usb_endpoint_descriptor *ep_desc;
1487         int i, err;
1488
1489         if (!data->isoc)
1490                 return -ENODEV;
1491
1492         err = usb_set_interface(data->udev, data->isoc_ifnum, altsetting);
1493         if (err < 0) {
1494                 bt_dev_err(hdev, "setting interface failed (%d)", -err);
1495                 return err;
1496         }
1497
1498         data->isoc_altsetting = altsetting;
1499
1500         data->isoc_tx_ep = NULL;
1501         data->isoc_rx_ep = NULL;
1502
1503         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1504                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1505
1506                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1507                         data->isoc_tx_ep = ep_desc;
1508                         continue;
1509                 }
1510
1511                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1512                         data->isoc_rx_ep = ep_desc;
1513                         continue;
1514                 }
1515         }
1516
1517         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1518                 bt_dev_err(hdev, "invalid SCO descriptors");
1519                 return -ENODEV;
1520         }
1521
1522         return 0;
1523 }
1524
1525 static void btusb_work(struct work_struct *work)
1526 {
1527         struct btusb_data *data = container_of(work, struct btusb_data, work);
1528         struct hci_dev *hdev = data->hdev;
1529         int new_alts;
1530         int err;
1531
1532         if (data->sco_num > 0) {
1533                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1534                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1535                         if (err < 0) {
1536                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1537                                 usb_kill_anchored_urbs(&data->isoc_anchor);
1538                                 return;
1539                         }
1540
1541                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1542                 }
1543
1544                 if (hdev->voice_setting & 0x0020) {
1545                         static const int alts[3] = { 2, 4, 5 };
1546
1547                         new_alts = alts[data->sco_num - 1];
1548                 } else {
1549                         new_alts = data->sco_num;
1550                 }
1551
1552                 if (data->isoc_altsetting != new_alts) {
1553                         unsigned long flags;
1554
1555                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1556                         usb_kill_anchored_urbs(&data->isoc_anchor);
1557
1558                         /* When isochronous alternate setting needs to be
1559                          * changed, because SCO connection has been added
1560                          * or removed, a packet fragment may be left in the
1561                          * reassembling state. This could lead to wrongly
1562                          * assembled fragments.
1563                          *
1564                          * Clear outstanding fragment when selecting a new
1565                          * alternate setting.
1566                          */
1567                         spin_lock_irqsave(&data->rxlock, flags);
1568                         kfree_skb(data->sco_skb);
1569                         data->sco_skb = NULL;
1570                         spin_unlock_irqrestore(&data->rxlock, flags);
1571
1572                         if (__set_isoc_interface(hdev, new_alts) < 0)
1573                                 return;
1574                 }
1575
1576                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1577                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1578                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1579                         else
1580                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1581                 }
1582         } else {
1583                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1584                 usb_kill_anchored_urbs(&data->isoc_anchor);
1585
1586                 __set_isoc_interface(hdev, 0);
1587                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1588                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1589         }
1590 }
1591
1592 static void btusb_waker(struct work_struct *work)
1593 {
1594         struct btusb_data *data = container_of(work, struct btusb_data, waker);
1595         int err;
1596
1597         err = usb_autopm_get_interface(data->intf);
1598         if (err < 0)
1599                 return;
1600
1601         usb_autopm_put_interface(data->intf);
1602 }
1603
1604 static int btusb_setup_bcm92035(struct hci_dev *hdev)
1605 {
1606         struct sk_buff *skb;
1607         u8 val = 0x00;
1608
1609         BT_DBG("%s", hdev->name);
1610
1611         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1612         if (IS_ERR(skb))
1613                 bt_dev_err(hdev, "BCM92035 command failed (%ld)", PTR_ERR(skb));
1614         else
1615                 kfree_skb(skb);
1616
1617         return 0;
1618 }
1619
1620 static int btusb_setup_csr(struct hci_dev *hdev)
1621 {
1622         struct hci_rp_read_local_version *rp;
1623         struct sk_buff *skb;
1624
1625         BT_DBG("%s", hdev->name);
1626
1627         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1628                              HCI_INIT_TIMEOUT);
1629         if (IS_ERR(skb)) {
1630                 int err = PTR_ERR(skb);
1631                 bt_dev_err(hdev, "CSR: Local version failed (%d)", err);
1632                 return err;
1633         }
1634
1635         if (skb->len != sizeof(struct hci_rp_read_local_version)) {
1636                 bt_dev_err(hdev, "CSR: Local version length mismatch");
1637                 kfree_skb(skb);
1638                 return -EIO;
1639         }
1640
1641         rp = (struct hci_rp_read_local_version *)skb->data;
1642
1643         /* Detect controllers which aren't real CSR ones. */
1644         if (le16_to_cpu(rp->manufacturer) != 10 ||
1645             le16_to_cpu(rp->lmp_subver) == 0x0c5c) {
1646                 /* Clear the reset quirk since this is not an actual
1647                  * early Bluetooth 1.1 device from CSR.
1648                  */
1649                 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1650
1651                 /* These fake CSR controllers have all a broken
1652                  * stored link key handling and so just disable it.
1653                  */
1654                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
1655         }
1656
1657         kfree_skb(skb);
1658
1659         return 0;
1660 }
1661
1662 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1663                                                        struct intel_version *ver)
1664 {
1665         const struct firmware *fw;
1666         char fwname[64];
1667         int ret;
1668
1669         snprintf(fwname, sizeof(fwname),
1670                  "/*(DEBLOBBED)*/",
1671                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
1672                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1673                  ver->fw_build_ww, ver->fw_build_yy);
1674
1675         ret = reject_firmware(&fw, fwname, &hdev->dev);
1676         if (ret < 0) {
1677                 if (ret == -EINVAL) {
1678                         bt_dev_err(hdev, "Intel firmware file request failed (%d)",
1679                                    ret);
1680                         return NULL;
1681                 }
1682
1683                 bt_dev_err(hdev, "failed to open Intel firmware file: %s (%d)",
1684                            fwname, ret);
1685
1686                 /* If the correct firmware patch file is not found, use the
1687                  * default firmware patch file instead
1688                  */
1689                 snprintf(fwname, sizeof(fwname), "/*(DEBLOBBED)*/",
1690                          ver->hw_platform, ver->hw_variant);
1691                 if (reject_firmware(&fw, fwname, &hdev->dev) < 0) {
1692                         bt_dev_err(hdev, "failed to open default fw file: %s",
1693                                    fwname);
1694                         return NULL;
1695                 }
1696         }
1697
1698         bt_dev_info(hdev, "Intel Bluetooth firmware file: %s", fwname);
1699
1700         return fw;
1701 }
1702
1703 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1704                                       const struct firmware *fw,
1705                                       const u8 **fw_ptr, int *disable_patch)
1706 {
1707         struct sk_buff *skb;
1708         struct hci_command_hdr *cmd;
1709         const u8 *cmd_param;
1710         struct hci_event_hdr *evt = NULL;
1711         const u8 *evt_param = NULL;
1712         int remain = fw->size - (*fw_ptr - fw->data);
1713
1714         /* The first byte indicates the types of the patch command or event.
1715          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1716          * in the current firmware buffer doesn't start with 0x01 or
1717          * the size of remain buffer is smaller than HCI command header,
1718          * the firmware file is corrupted and it should stop the patching
1719          * process.
1720          */
1721         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1722                 bt_dev_err(hdev, "Intel fw corrupted: invalid cmd read");
1723                 return -EINVAL;
1724         }
1725         (*fw_ptr)++;
1726         remain--;
1727
1728         cmd = (struct hci_command_hdr *)(*fw_ptr);
1729         *fw_ptr += sizeof(*cmd);
1730         remain -= sizeof(*cmd);
1731
1732         /* Ensure that the remain firmware data is long enough than the length
1733          * of command parameter. If not, the firmware file is corrupted.
1734          */
1735         if (remain < cmd->plen) {
1736                 bt_dev_err(hdev, "Intel fw corrupted: invalid cmd len");
1737                 return -EFAULT;
1738         }
1739
1740         /* If there is a command that loads a patch in the firmware
1741          * file, then enable the patch upon success, otherwise just
1742          * disable the manufacturer mode, for example patch activation
1743          * is not required when the default firmware patch file is used
1744          * because there are no patch data to load.
1745          */
1746         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1747                 *disable_patch = 0;
1748
1749         cmd_param = *fw_ptr;
1750         *fw_ptr += cmd->plen;
1751         remain -= cmd->plen;
1752
1753         /* This reads the expected events when the above command is sent to the
1754          * device. Some vendor commands expects more than one events, for
1755          * example command status event followed by vendor specific event.
1756          * For this case, it only keeps the last expected event. so the command
1757          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1758          * last expected event.
1759          */
1760         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1761                 (*fw_ptr)++;
1762                 remain--;
1763
1764                 evt = (struct hci_event_hdr *)(*fw_ptr);
1765                 *fw_ptr += sizeof(*evt);
1766                 remain -= sizeof(*evt);
1767
1768                 if (remain < evt->plen) {
1769                         bt_dev_err(hdev, "Intel fw corrupted: invalid evt len");
1770                         return -EFAULT;
1771                 }
1772
1773                 evt_param = *fw_ptr;
1774                 *fw_ptr += evt->plen;
1775                 remain -= evt->plen;
1776         }
1777
1778         /* Every HCI commands in the firmware file has its correspond event.
1779          * If event is not found or remain is smaller than zero, the firmware
1780          * file is corrupted.
1781          */
1782         if (!evt || !evt_param || remain < 0) {
1783                 bt_dev_err(hdev, "Intel fw corrupted: invalid evt read");
1784                 return -EFAULT;
1785         }
1786
1787         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1788                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1789         if (IS_ERR(skb)) {
1790                 bt_dev_err(hdev, "sending Intel patch command (0x%4.4x) failed (%ld)",
1791                            cmd->opcode, PTR_ERR(skb));
1792                 return PTR_ERR(skb);
1793         }
1794
1795         /* It ensures that the returned event matches the event data read from
1796          * the firmware file. At fist, it checks the length and then
1797          * the contents of the event.
1798          */
1799         if (skb->len != evt->plen) {
1800                 bt_dev_err(hdev, "mismatch event length (opcode 0x%4.4x)",
1801                            le16_to_cpu(cmd->opcode));
1802                 kfree_skb(skb);
1803                 return -EFAULT;
1804         }
1805
1806         if (memcmp(skb->data, evt_param, evt->plen)) {
1807                 bt_dev_err(hdev, "mismatch event parameter (opcode 0x%4.4x)",
1808                            le16_to_cpu(cmd->opcode));
1809                 kfree_skb(skb);
1810                 return -EFAULT;
1811         }
1812         kfree_skb(skb);
1813
1814         return 0;
1815 }
1816
1817 static int btusb_setup_intel(struct hci_dev *hdev)
1818 {
1819         struct sk_buff *skb;
1820         const struct firmware *fw;
1821         const u8 *fw_ptr;
1822         int disable_patch, err;
1823         struct intel_version ver;
1824
1825         BT_DBG("%s", hdev->name);
1826
1827         /* The controller has a bug with the first HCI command sent to it
1828          * returning number of completed commands as zero. This would stall the
1829          * command processing in the Bluetooth core.
1830          *
1831          * As a workaround, send HCI Reset command first which will reset the
1832          * number of completed commands and allow normal command processing
1833          * from now on.
1834          */
1835         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1836         if (IS_ERR(skb)) {
1837                 bt_dev_err(hdev, "sending initial HCI reset command failed (%ld)",
1838                            PTR_ERR(skb));
1839                 return PTR_ERR(skb);
1840         }
1841         kfree_skb(skb);
1842
1843         /* Read Intel specific controller version first to allow selection of
1844          * which firmware file to load.
1845          *
1846          * The returned information are hardware variant and revision plus
1847          * firmware variant, revision and build number.
1848          */
1849         err = btintel_read_version(hdev, &ver);
1850         if (err)
1851                 return err;
1852
1853         bt_dev_info(hdev, "read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1854                     ver.hw_platform, ver.hw_variant, ver.hw_revision,
1855                     ver.fw_variant,  ver.fw_revision, ver.fw_build_num,
1856                     ver.fw_build_ww, ver.fw_build_yy, ver.fw_patch_num);
1857
1858         /* fw_patch_num indicates the version of patch the device currently
1859          * have. If there is no patch data in the device, it is always 0x00.
1860          * So, if it is other than 0x00, no need to patch the device again.
1861          */
1862         if (ver.fw_patch_num) {
1863                 bt_dev_info(hdev, "Intel device is already patched. "
1864                             "patch num: %02x", ver.fw_patch_num);
1865                 goto complete;
1866         }
1867
1868         /* Opens the firmware patch file based on the firmware version read
1869          * from the controller. If it fails to open the matching firmware
1870          * patch file, it tries to open the default firmware patch file.
1871          * If no patch file is found, allow the device to operate without
1872          * a patch.
1873          */
1874         fw = btusb_setup_intel_get_fw(hdev, &ver);
1875         if (!fw)
1876                 goto complete;
1877         fw_ptr = fw->data;
1878
1879         /* Enable the manufacturer mode of the controller.
1880          * Only while this mode is enabled, the driver can download the
1881          * firmware patch data and configuration parameters.
1882          */
1883         err = btintel_enter_mfg(hdev);
1884         if (err) {
1885                 release_firmware(fw);
1886                 return err;
1887         }
1888
1889         disable_patch = 1;
1890
1891         /* The firmware data file consists of list of Intel specific HCI
1892          * commands and its expected events. The first byte indicates the
1893          * type of the message, either HCI command or HCI event.
1894          *
1895          * It reads the command and its expected event from the firmware file,
1896          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1897          * the returned event is compared with the event read from the firmware
1898          * file and it will continue until all the messages are downloaded to
1899          * the controller.
1900          *
1901          * Once the firmware patching is completed successfully,
1902          * the manufacturer mode is disabled with reset and activating the
1903          * downloaded patch.
1904          *
1905          * If the firmware patching fails, the manufacturer mode is
1906          * disabled with reset and deactivating the patch.
1907          *
1908          * If the default patch file is used, no reset is done when disabling
1909          * the manufacturer.
1910          */
1911         while (fw->size > fw_ptr - fw->data) {
1912                 int ret;
1913
1914                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1915                                                  &disable_patch);
1916                 if (ret < 0)
1917                         goto exit_mfg_deactivate;
1918         }
1919
1920         release_firmware(fw);
1921
1922         if (disable_patch)
1923                 goto exit_mfg_disable;
1924
1925         /* Patching completed successfully and disable the manufacturer mode
1926          * with reset and activate the downloaded firmware patches.
1927          */
1928         err = btintel_exit_mfg(hdev, true, true);
1929         if (err)
1930                 return err;
1931
1932         bt_dev_info(hdev, "Intel firmware patch completed and activated");
1933
1934         goto complete;
1935
1936 exit_mfg_disable:
1937         /* Disable the manufacturer mode without reset */
1938         err = btintel_exit_mfg(hdev, false, false);
1939         if (err)
1940                 return err;
1941
1942         bt_dev_info(hdev, "Intel firmware patch completed");
1943
1944         goto complete;
1945
1946 exit_mfg_deactivate:
1947         release_firmware(fw);
1948
1949         /* Patching failed. Disable the manufacturer mode with reset and
1950          * deactivate the downloaded firmware patches.
1951          */
1952         err = btintel_exit_mfg(hdev, true, false);
1953         if (err)
1954                 return err;
1955
1956         bt_dev_info(hdev, "Intel firmware patch completed and deactivated");
1957
1958 complete:
1959         /* Set the event mask for Intel specific vendor events. This enables
1960          * a few extra events that are useful during general operation.
1961          */
1962         btintel_set_event_mask_mfg(hdev, false);
1963
1964         btintel_check_bdaddr(hdev);
1965         return 0;
1966 }
1967
1968 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
1969 {
1970         struct sk_buff *skb;
1971         struct hci_event_hdr *hdr;
1972         struct hci_ev_cmd_complete *evt;
1973
1974         skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_KERNEL);
1975         if (!skb)
1976                 return -ENOMEM;
1977
1978         hdr = skb_put(skb, sizeof(*hdr));
1979         hdr->evt = HCI_EV_CMD_COMPLETE;
1980         hdr->plen = sizeof(*evt) + 1;
1981
1982         evt = skb_put(skb, sizeof(*evt));
1983         evt->ncmd = 0x01;
1984         evt->opcode = cpu_to_le16(opcode);
1985
1986         skb_put_u8(skb, 0x00);
1987
1988         hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
1989
1990         return hci_recv_frame(hdev, skb);
1991 }
1992
1993 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
1994                                  int count)
1995 {
1996         /* When the device is in bootloader mode, then it can send
1997          * events via the bulk endpoint. These events are treated the
1998          * same way as the ones received from the interrupt endpoint.
1999          */
2000         if (test_bit(BTUSB_BOOTLOADER, &data->flags))
2001                 return btusb_recv_intr(data, buffer, count);
2002
2003         return btusb_recv_bulk(data, buffer, count);
2004 }
2005
2006 static void btusb_intel_bootup(struct btusb_data *data, const void *ptr,
2007                                unsigned int len)
2008 {
2009         const struct intel_bootup *evt = ptr;
2010
2011         if (len != sizeof(*evt))
2012                 return;
2013
2014         if (test_and_clear_bit(BTUSB_BOOTING, &data->flags))
2015                 wake_up_bit(&data->flags, BTUSB_BOOTING);
2016 }
2017
2018 static void btusb_intel_secure_send_result(struct btusb_data *data,
2019                                            const void *ptr, unsigned int len)
2020 {
2021         const struct intel_secure_send_result *evt = ptr;
2022
2023         if (len != sizeof(*evt))
2024                 return;
2025
2026         if (evt->result)
2027                 set_bit(BTUSB_FIRMWARE_FAILED, &data->flags);
2028
2029         if (test_and_clear_bit(BTUSB_DOWNLOADING, &data->flags) &&
2030             test_bit(BTUSB_FIRMWARE_LOADED, &data->flags))
2031                 wake_up_bit(&data->flags, BTUSB_DOWNLOADING);
2032 }
2033
2034 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
2035 {
2036         struct btusb_data *data = hci_get_drvdata(hdev);
2037
2038         if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
2039                 struct hci_event_hdr *hdr = (void *)skb->data;
2040
2041                 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
2042                     hdr->plen > 0) {
2043                         const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
2044                         unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
2045
2046                         switch (skb->data[2]) {
2047                         case 0x02:
2048                                 /* When switching to the operational firmware
2049                                  * the device sends a vendor specific event
2050                                  * indicating that the bootup completed.
2051                                  */
2052                                 btusb_intel_bootup(data, ptr, len);
2053                                 break;
2054                         case 0x06:
2055                                 /* When the firmware loading completes the
2056                                  * device sends out a vendor specific event
2057                                  * indicating the result of the firmware
2058                                  * loading.
2059                                  */
2060                                 btusb_intel_secure_send_result(data, ptr, len);
2061                                 break;
2062                         }
2063                 }
2064         }
2065
2066         return hci_recv_frame(hdev, skb);
2067 }
2068
2069 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
2070 {
2071         struct btusb_data *data = hci_get_drvdata(hdev);
2072         struct urb *urb;
2073
2074         BT_DBG("%s", hdev->name);
2075
2076         switch (hci_skb_pkt_type(skb)) {
2077         case HCI_COMMAND_PKT:
2078                 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
2079                         struct hci_command_hdr *cmd = (void *)skb->data;
2080                         __u16 opcode = le16_to_cpu(cmd->opcode);
2081
2082                         /* When in bootloader mode and the command 0xfc09
2083                          * is received, it needs to be send down the
2084                          * bulk endpoint. So allocate a bulk URB instead.
2085                          */
2086                         if (opcode == 0xfc09)
2087                                 urb = alloc_bulk_urb(hdev, skb);
2088                         else
2089                                 urb = alloc_ctrl_urb(hdev, skb);
2090
2091                         /* When the 0xfc01 command is issued to boot into
2092                          * the operational firmware, it will actually not
2093                          * send a command complete event. To keep the flow
2094                          * control working inject that event here.
2095                          */
2096                         if (opcode == 0xfc01)
2097                                 inject_cmd_complete(hdev, opcode);
2098                 } else {
2099                         urb = alloc_ctrl_urb(hdev, skb);
2100                 }
2101                 if (IS_ERR(urb))
2102                         return PTR_ERR(urb);
2103
2104                 hdev->stat.cmd_tx++;
2105                 return submit_or_queue_tx_urb(hdev, urb);
2106
2107         case HCI_ACLDATA_PKT:
2108                 urb = alloc_bulk_urb(hdev, skb);
2109                 if (IS_ERR(urb))
2110                         return PTR_ERR(urb);
2111
2112                 hdev->stat.acl_tx++;
2113                 return submit_or_queue_tx_urb(hdev, urb);
2114
2115         case HCI_SCODATA_PKT:
2116                 if (hci_conn_num(hdev, SCO_LINK) < 1)
2117                         return -ENODEV;
2118
2119                 urb = alloc_isoc_urb(hdev, skb);
2120                 if (IS_ERR(urb))
2121                         return PTR_ERR(urb);
2122
2123                 hdev->stat.sco_tx++;
2124                 return submit_tx_urb(hdev, urb);
2125         }
2126
2127         return -EILSEQ;
2128 }
2129
2130 static bool btusb_setup_intel_new_get_fw_name(struct intel_version *ver,
2131                                              struct intel_boot_params *params,
2132                                              char *fw_name, size_t len,
2133                                              const char *suffix)
2134 {
2135         switch (ver->hw_variant) {
2136         case 0x0b:      /* SfP */
2137         case 0x0c:      /* WsP */
2138                 snprintf(fw_name, len, "intel/ibt-%u-%u.%s",
2139                         le16_to_cpu(ver->hw_variant),
2140                         le16_to_cpu(params->dev_revid),
2141                         suffix);
2142                 break;
2143         case 0x11:      /* JfP */
2144         case 0x12:      /* ThP */
2145         case 0x13:      /* HrP */
2146         case 0x14:      /* CcP */
2147                 snprintf(fw_name, len, "intel/ibt-%u-%u-%u.%s",
2148                         le16_to_cpu(ver->hw_variant),
2149                         le16_to_cpu(ver->hw_revision),
2150                         le16_to_cpu(ver->fw_revision),
2151                         suffix);
2152                 break;
2153         default:
2154                 return false;
2155         }
2156         return true;
2157 }
2158
2159 static int btusb_setup_intel_new(struct hci_dev *hdev)
2160 {
2161         struct btusb_data *data = hci_get_drvdata(hdev);
2162         struct intel_version ver;
2163         struct intel_boot_params params;
2164         const struct firmware *fw;
2165         u32 boot_param;
2166         char fwname[64];
2167         ktime_t calltime, delta, rettime;
2168         unsigned long long duration;
2169         int err;
2170
2171         BT_DBG("%s", hdev->name);
2172
2173         /* Set the default boot parameter to 0x0 and it is updated to
2174          * SKU specific boot parameter after reading Intel_Write_Boot_Params
2175          * command while downloading the firmware.
2176          */
2177         boot_param = 0x00000000;
2178
2179         calltime = ktime_get();
2180
2181         /* Read the Intel version information to determine if the device
2182          * is in bootloader mode or if it already has operational firmware
2183          * loaded.
2184          */
2185         err = btintel_read_version(hdev, &ver);
2186         if (err)
2187                 return err;
2188
2189         /* The hardware platform number has a fixed value of 0x37 and
2190          * for now only accept this single value.
2191          */
2192         if (ver.hw_platform != 0x37) {
2193                 bt_dev_err(hdev, "Unsupported Intel hardware platform (%u)",
2194                            ver.hw_platform);
2195                 return -EINVAL;
2196         }
2197
2198         /* Check for supported iBT hardware variants of this firmware
2199          * loading method.
2200          *
2201          * This check has been put in place to ensure correct forward
2202          * compatibility options when newer hardware variants come along.
2203          */
2204         switch (ver.hw_variant) {
2205         case 0x0b:      /* SfP */
2206         case 0x0c:      /* WsP */
2207         case 0x11:      /* JfP */
2208         case 0x12:      /* ThP */
2209         case 0x13:      /* HrP */
2210         case 0x14:      /* CcP */
2211                 break;
2212         default:
2213                 bt_dev_err(hdev, "Unsupported Intel hardware variant (%u)",
2214                            ver.hw_variant);
2215                 return -EINVAL;
2216         }
2217
2218         btintel_version_info(hdev, &ver);
2219
2220         /* The firmware variant determines if the device is in bootloader
2221          * mode or is running operational firmware. The value 0x06 identifies
2222          * the bootloader and the value 0x23 identifies the operational
2223          * firmware.
2224          *
2225          * When the operational firmware is already present, then only
2226          * the check for valid Bluetooth device address is needed. This
2227          * determines if the device will be added as configured or
2228          * unconfigured controller.
2229          *
2230          * It is not possible to use the Secure Boot Parameters in this
2231          * case since that command is only available in bootloader mode.
2232          */
2233         if (ver.fw_variant == 0x23) {
2234                 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2235                 btintel_check_bdaddr(hdev);
2236                 return 0;
2237         }
2238
2239         /* If the device is not in bootloader mode, then the only possible
2240          * choice is to return an error and abort the device initialization.
2241          */
2242         if (ver.fw_variant != 0x06) {
2243                 bt_dev_err(hdev, "Unsupported Intel firmware variant (%u)",
2244                            ver.fw_variant);
2245                 return -ENODEV;
2246         }
2247
2248         /* Read the secure boot parameters to identify the operating
2249          * details of the bootloader.
2250          */
2251         err = btintel_read_boot_params(hdev, &params);
2252         if (err)
2253                 return err;
2254
2255         /* It is required that every single firmware fragment is acknowledged
2256          * with a command complete event. If the boot parameters indicate
2257          * that this bootloader does not send them, then abort the setup.
2258          */
2259         if (params.limited_cce != 0x00) {
2260                 bt_dev_err(hdev, "Unsupported Intel firmware loading method (%u)",
2261                            params.limited_cce);
2262                 return -EINVAL;
2263         }
2264
2265         /* If the OTP has no valid Bluetooth device address, then there will
2266          * also be no valid address for the operational firmware.
2267          */
2268         if (!bacmp(&params.otp_bdaddr, BDADDR_ANY)) {
2269                 bt_dev_info(hdev, "No device address configured");
2270                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2271         }
2272
2273         /* With this Intel bootloader only the hardware variant and device
2274          * revision information are used to select the right firmware for SfP
2275          * and WsP.
2276          *
2277          * The firmware filename is ibt-<hw_variant>-<dev_revid>.sfi.
2278          *
2279          * Currently the supported hardware variants are:
2280          *   11 (0x0b) for iBT3.0 (LnP/SfP)
2281          *   12 (0x0c) for iBT3.5 (WsP)
2282          *
2283          * For ThP/JfP and for future SKU's, the FW name varies based on HW
2284          * variant, HW revision and FW revision, as these are dependent on CNVi
2285          * and RF Combination.
2286          *
2287          *   17 (0x11) for iBT3.5 (JfP)
2288          *   18 (0x12) for iBT3.5 (ThP)
2289          *
2290          * The firmware file name for these will be
2291          * ibt-<hw_variant>-<hw_revision>-<fw_revision>.sfi.
2292          *
2293          */
2294         err = btusb_setup_intel_new_get_fw_name(&ver, &params, fwname,
2295                                                 sizeof(fwname), "sfi");
2296         if (!err) {
2297                 bt_dev_err(hdev, "Unsupported Intel firmware naming");
2298                 return -EINVAL;
2299         }
2300
2301         err = reject_firmware(&fw, fwname, &hdev->dev);
2302         if (err < 0) {
2303                 bt_dev_err(hdev, "Failed to load Intel firmware file (%d)", err);
2304                 return err;
2305         }
2306
2307         bt_dev_info(hdev, "Found device firmware: %s", fwname);
2308
2309         /* Save the DDC file name for later use to apply once the firmware
2310          * downloading is done.
2311          */
2312         err = btusb_setup_intel_new_get_fw_name(&ver, &params, fwname,
2313                                                 sizeof(fwname), "ddc");
2314         if (!err) {
2315                 bt_dev_err(hdev, "Unsupported Intel firmware naming");
2316                 return -EINVAL;
2317         }
2318
2319         if (fw->size < 644) {
2320                 bt_dev_err(hdev, "Invalid size of firmware file (%zu)",
2321                            fw->size);
2322                 err = -EBADF;
2323                 goto done;
2324         }
2325
2326         set_bit(BTUSB_DOWNLOADING, &data->flags);
2327
2328         /* Start firmware downloading and get boot parameter */
2329         err = btintel_download_firmware(hdev, fw, &boot_param);
2330         if (err < 0)
2331                 goto done;
2332
2333         set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2334
2335         bt_dev_info(hdev, "Waiting for firmware download to complete");
2336
2337         /* Before switching the device into operational mode and with that
2338          * booting the loaded firmware, wait for the bootloader notification
2339          * that all fragments have been successfully received.
2340          *
2341          * When the event processing receives the notification, then the
2342          * BTUSB_DOWNLOADING flag will be cleared.
2343          *
2344          * The firmware loading should not take longer than 5 seconds
2345          * and thus just timeout if that happens and fail the setup
2346          * of this device.
2347          */
2348         err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
2349                                   TASK_INTERRUPTIBLE,
2350                                   msecs_to_jiffies(5000));
2351         if (err == -EINTR) {
2352                 bt_dev_err(hdev, "Firmware loading interrupted");
2353                 goto done;
2354         }
2355
2356         if (err) {
2357                 bt_dev_err(hdev, "Firmware loading timeout");
2358                 err = -ETIMEDOUT;
2359                 goto done;
2360         }
2361
2362         if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) {
2363                 bt_dev_err(hdev, "Firmware loading failed");
2364                 err = -ENOEXEC;
2365                 goto done;
2366         }
2367
2368         rettime = ktime_get();
2369         delta = ktime_sub(rettime, calltime);
2370         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2371
2372         bt_dev_info(hdev, "Firmware loaded in %llu usecs", duration);
2373
2374 done:
2375         release_firmware(fw);
2376
2377         if (err < 0)
2378                 return err;
2379
2380         calltime = ktime_get();
2381
2382         set_bit(BTUSB_BOOTING, &data->flags);
2383
2384         err = btintel_send_intel_reset(hdev, boot_param);
2385         if (err)
2386                 return err;
2387
2388         /* The bootloader will not indicate when the device is ready. This
2389          * is done by the operational firmware sending bootup notification.
2390          *
2391          * Booting into operational firmware should not take longer than
2392          * 1 second. However if that happens, then just fail the setup
2393          * since something went wrong.
2394          */
2395         bt_dev_info(hdev, "Waiting for device to boot");
2396
2397         err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING,
2398                                   TASK_INTERRUPTIBLE,
2399                                   msecs_to_jiffies(1000));
2400
2401         if (err == -EINTR) {
2402                 bt_dev_err(hdev, "Device boot interrupted");
2403                 return -EINTR;
2404         }
2405
2406         if (err) {
2407                 bt_dev_err(hdev, "Device boot timeout");
2408                 return -ETIMEDOUT;
2409         }
2410
2411         rettime = ktime_get();
2412         delta = ktime_sub(rettime, calltime);
2413         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2414
2415         bt_dev_info(hdev, "Device booted in %llu usecs", duration);
2416
2417         clear_bit(BTUSB_BOOTLOADER, &data->flags);
2418
2419         /* Once the device is running in operational mode, it needs to apply
2420          * the device configuration (DDC) parameters.
2421          *
2422          * The device can work without DDC parameters, so even if it fails
2423          * to load the file, no need to fail the setup.
2424          */
2425         btintel_load_ddc_config(hdev, fwname);
2426
2427         /* Set the event mask for Intel specific vendor events. This enables
2428          * a few extra events that are useful during general operation. It
2429          * does not enable any debugging related events.
2430          *
2431          * The device will function correctly without these events enabled
2432          * and thus no need to fail the setup.
2433          */
2434         btintel_set_event_mask(hdev, false);
2435
2436         return 0;
2437 }
2438
2439 static int btusb_shutdown_intel(struct hci_dev *hdev)
2440 {
2441         struct sk_buff *skb;
2442         long ret;
2443
2444         /* In the shutdown sequence where Bluetooth is turned off followed
2445          * by WiFi being turned off, turning WiFi back on causes issue with
2446          * the RF calibration.
2447          *
2448          * To ensure that any RF activity has been stopped, issue HCI Reset
2449          * command to clear all ongoing activity including advertising,
2450          * scanning etc.
2451          */
2452         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2453         if (IS_ERR(skb)) {
2454                 ret = PTR_ERR(skb);
2455                 bt_dev_err(hdev, "HCI reset during shutdown failed");
2456                 return ret;
2457         }
2458         kfree_skb(skb);
2459
2460         /* Some platforms have an issue with BT LED when the interface is
2461          * down or BT radio is turned off, which takes 5 seconds to BT LED
2462          * goes off. This command turns off the BT LED immediately.
2463          */
2464         skb = __hci_cmd_sync(hdev, 0xfc3f, 0, NULL, HCI_INIT_TIMEOUT);
2465         if (IS_ERR(skb)) {
2466                 ret = PTR_ERR(skb);
2467                 bt_dev_err(hdev, "turning off Intel device LED failed");
2468                 return ret;
2469         }
2470         kfree_skb(skb);
2471
2472         return 0;
2473 }
2474
2475 static int btusb_shutdown_intel_new(struct hci_dev *hdev)
2476 {
2477         struct sk_buff *skb;
2478
2479         /* Send HCI Reset to the controller to stop any BT activity which
2480          * were triggered. This will help to save power and maintain the
2481          * sync b/w Host and controller
2482          */
2483         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2484         if (IS_ERR(skb)) {
2485                 bt_dev_err(hdev, "HCI reset during shutdown failed");
2486                 return PTR_ERR(skb);
2487         }
2488         kfree_skb(skb);
2489
2490         return 0;
2491 }
2492
2493 #ifdef CONFIG_BT_HCIBTUSB_MTK
2494
2495 #define FIRMWARE_MT7663         "/*(DEBLOBBED)*/"
2496 #define FIRMWARE_MT7668         "/*(DEBLOBBED)*/"
2497
2498 #define HCI_WMT_MAX_EVENT_SIZE          64
2499
2500 enum {
2501         BTMTK_WMT_PATCH_DWNLD = 0x1,
2502         BTMTK_WMT_FUNC_CTRL = 0x6,
2503         BTMTK_WMT_RST = 0x7,
2504         BTMTK_WMT_SEMAPHORE = 0x17,
2505 };
2506
2507 enum {
2508         BTMTK_WMT_INVALID,
2509         BTMTK_WMT_PATCH_UNDONE,
2510         BTMTK_WMT_PATCH_DONE,
2511         BTMTK_WMT_ON_UNDONE,
2512         BTMTK_WMT_ON_DONE,
2513         BTMTK_WMT_ON_PROGRESS,
2514 };
2515
2516 struct btmtk_wmt_hdr {
2517         u8      dir;
2518         u8      op;
2519         __le16  dlen;
2520         u8      flag;
2521 } __packed;
2522
2523 struct btmtk_hci_wmt_cmd {
2524         struct btmtk_wmt_hdr hdr;
2525         u8 data[256];
2526 } __packed;
2527
2528 struct btmtk_hci_wmt_evt {
2529         struct hci_event_hdr hhdr;
2530         struct btmtk_wmt_hdr whdr;
2531 } __packed;
2532
2533 struct btmtk_hci_wmt_evt_funcc {
2534         struct btmtk_hci_wmt_evt hwhdr;
2535         __be16 status;
2536 } __packed;
2537
2538 struct btmtk_tci_sleep {
2539         u8 mode;
2540         __le16 duration;
2541         __le16 host_duration;
2542         u8 host_wakeup_pin;
2543         u8 time_compensation;
2544 } __packed;
2545
2546 struct btmtk_hci_wmt_params {
2547         u8 op;
2548         u8 flag;
2549         u16 dlen;
2550         const void *data;
2551         u32 *status;
2552 };
2553
2554 static void btusb_mtk_wmt_recv(struct urb *urb)
2555 {
2556         struct hci_dev *hdev = urb->context;
2557         struct btusb_data *data = hci_get_drvdata(hdev);
2558         struct hci_event_hdr *hdr;
2559         struct sk_buff *skb;
2560         int err;
2561
2562         if (urb->status == 0 && urb->actual_length > 0) {
2563                 hdev->stat.byte_rx += urb->actual_length;
2564
2565                 /* WMT event shouldn't be fragmented and the size should be
2566                  * less than HCI_WMT_MAX_EVENT_SIZE.
2567                  */
2568                 skb = bt_skb_alloc(HCI_WMT_MAX_EVENT_SIZE, GFP_ATOMIC);
2569                 if (!skb) {
2570                         hdev->stat.err_rx++;
2571                         goto err_out;
2572                 }
2573
2574                 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
2575                 skb_put_data(skb, urb->transfer_buffer, urb->actual_length);
2576
2577                 hdr = (void *)skb->data;
2578                 /* Fix up the vendor event id with 0xff for vendor specific
2579                  * instead of 0xe4 so that event send via monitoring socket can
2580                  * be parsed properly.
2581                  */
2582                 hdr->evt = 0xff;
2583
2584                 /* When someone waits for the WMT event, the skb is being cloned
2585                  * and being processed the events from there then.
2586                  */
2587                 if (test_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags)) {
2588                         data->evt_skb = skb_clone(skb, GFP_ATOMIC);
2589                         if (!data->evt_skb)
2590                                 goto err_out;
2591                 }
2592
2593                 err = hci_recv_frame(hdev, skb);
2594                 if (err < 0)
2595                         goto err_free_skb;
2596
2597                 if (test_and_clear_bit(BTUSB_TX_WAIT_VND_EVT,
2598                                        &data->flags)) {
2599                         /* Barrier to sync with other CPUs */
2600                         smp_mb__after_atomic();
2601                         wake_up_bit(&data->flags,
2602                                     BTUSB_TX_WAIT_VND_EVT);
2603                 }
2604 err_out:
2605                 return;
2606 err_free_skb:
2607                 kfree_skb(data->evt_skb);
2608                 data->evt_skb = NULL;
2609                 return;
2610         } else if (urb->status == -ENOENT) {
2611                 /* Avoid suspend failed when usb_kill_urb */
2612                 return;
2613         }
2614
2615         usb_mark_last_busy(data->udev);
2616
2617         /* The URB complete handler is still called with urb->actual_length = 0
2618          * when the event is not available, so we should keep re-submitting
2619          * URB until WMT event returns, Also, It's necessary to wait some time
2620          * between the two consecutive control URBs to relax the target device
2621          * to generate the event. Otherwise, the WMT event cannot return from
2622          * the device successfully.
2623          */
2624         udelay(100);
2625
2626         usb_anchor_urb(urb, &data->ctrl_anchor);
2627         err = usb_submit_urb(urb, GFP_ATOMIC);
2628         if (err < 0) {
2629                 /* -EPERM: urb is being killed;
2630                  * -ENODEV: device got disconnected
2631                  */
2632                 if (err != -EPERM && err != -ENODEV)
2633                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
2634                                    urb, -err);
2635                 usb_unanchor_urb(urb);
2636         }
2637 }
2638
2639 static int btusb_mtk_submit_wmt_recv_urb(struct hci_dev *hdev)
2640 {
2641         struct btusb_data *data = hci_get_drvdata(hdev);
2642         struct usb_ctrlrequest *dr;
2643         unsigned char *buf;
2644         int err, size = 64;
2645         unsigned int pipe;
2646         struct urb *urb;
2647
2648         urb = usb_alloc_urb(0, GFP_KERNEL);
2649         if (!urb)
2650                 return -ENOMEM;
2651
2652         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
2653         if (!dr) {
2654                 usb_free_urb(urb);
2655                 return -ENOMEM;
2656         }
2657
2658         dr->bRequestType = USB_TYPE_VENDOR | USB_DIR_IN;
2659         dr->bRequest     = 1;
2660         dr->wIndex       = cpu_to_le16(0);
2661         dr->wValue       = cpu_to_le16(48);
2662         dr->wLength      = cpu_to_le16(size);
2663
2664         buf = kmalloc(size, GFP_KERNEL);
2665         if (!buf) {
2666                 kfree(dr);
2667                 return -ENOMEM;
2668         }
2669
2670         pipe = usb_rcvctrlpipe(data->udev, 0);
2671
2672         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
2673                              buf, size, btusb_mtk_wmt_recv, hdev);
2674
2675         urb->transfer_flags |= URB_FREE_BUFFER;
2676
2677         usb_anchor_urb(urb, &data->ctrl_anchor);
2678         err = usb_submit_urb(urb, GFP_KERNEL);
2679         if (err < 0) {
2680                 if (err != -EPERM && err != -ENODEV)
2681                         bt_dev_err(hdev, "urb %p submission failed (%d)",
2682                                    urb, -err);
2683                 usb_unanchor_urb(urb);
2684         }
2685
2686         usb_free_urb(urb);
2687
2688         return err;
2689 }
2690
2691 static int btusb_mtk_hci_wmt_sync(struct hci_dev *hdev,
2692                                   struct btmtk_hci_wmt_params *wmt_params)
2693 {
2694         struct btusb_data *data = hci_get_drvdata(hdev);
2695         struct btmtk_hci_wmt_evt_funcc *wmt_evt_funcc;
2696         u32 hlen, status = BTMTK_WMT_INVALID;
2697         struct btmtk_hci_wmt_evt *wmt_evt;
2698         struct btmtk_hci_wmt_cmd wc;
2699         struct btmtk_wmt_hdr *hdr;
2700         int err;
2701
2702         /* Submit control IN URB on demand to process the WMT event */
2703         err = btusb_mtk_submit_wmt_recv_urb(hdev);
2704         if (err < 0)
2705                 return err;
2706
2707         /* Send the WMT command and wait until the WMT event returns */
2708         hlen = sizeof(*hdr) + wmt_params->dlen;
2709         if (hlen > 255)
2710                 return -EINVAL;
2711
2712         hdr = (struct btmtk_wmt_hdr *)&wc;
2713         hdr->dir = 1;
2714         hdr->op = wmt_params->op;
2715         hdr->dlen = cpu_to_le16(wmt_params->dlen + 1);
2716         hdr->flag = wmt_params->flag;
2717         memcpy(wc.data, wmt_params->data, wmt_params->dlen);
2718
2719         set_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2720
2721         err = __hci_cmd_send(hdev, 0xfc6f, hlen, &wc);
2722
2723         if (err < 0) {
2724                 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2725                 return err;
2726         }
2727
2728         /* The vendor specific WMT commands are all answered by a vendor
2729          * specific event and will have the Command Status or Command
2730          * Complete as with usual HCI command flow control.
2731          *
2732          * After sending the command, wait for BTUSB_TX_WAIT_VND_EVT
2733          * state to be cleared. The driver specific event receive routine
2734          * will clear that state and with that indicate completion of the
2735          * WMT command.
2736          */
2737         err = wait_on_bit_timeout(&data->flags, BTUSB_TX_WAIT_VND_EVT,
2738                                   TASK_INTERRUPTIBLE, HCI_INIT_TIMEOUT);
2739         if (err == -EINTR) {
2740                 bt_dev_err(hdev, "Execution of wmt command interrupted");
2741                 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2742                 return err;
2743         }
2744
2745         if (err) {
2746                 bt_dev_err(hdev, "Execution of wmt command timed out");
2747                 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2748                 return -ETIMEDOUT;
2749         }
2750
2751         /* Parse and handle the return WMT event */
2752         wmt_evt = (struct btmtk_hci_wmt_evt *)data->evt_skb->data;
2753         if (wmt_evt->whdr.op != hdr->op) {
2754                 bt_dev_err(hdev, "Wrong op received %d expected %d",
2755                            wmt_evt->whdr.op, hdr->op);
2756                 err = -EIO;
2757                 goto err_free_skb;
2758         }
2759
2760         switch (wmt_evt->whdr.op) {
2761         case BTMTK_WMT_SEMAPHORE:
2762                 if (wmt_evt->whdr.flag == 2)
2763                         status = BTMTK_WMT_PATCH_UNDONE;
2764                 else
2765                         status = BTMTK_WMT_PATCH_DONE;
2766                 break;
2767         case BTMTK_WMT_FUNC_CTRL:
2768                 wmt_evt_funcc = (struct btmtk_hci_wmt_evt_funcc *)wmt_evt;
2769                 if (be16_to_cpu(wmt_evt_funcc->status) == 0x404)
2770                         status = BTMTK_WMT_ON_DONE;
2771                 else if (be16_to_cpu(wmt_evt_funcc->status) == 0x420)
2772                         status = BTMTK_WMT_ON_PROGRESS;
2773                 else
2774                         status = BTMTK_WMT_ON_UNDONE;
2775                 break;
2776         }
2777
2778         if (wmt_params->status)
2779                 *wmt_params->status = status;
2780
2781 err_free_skb:
2782         kfree_skb(data->evt_skb);
2783         data->evt_skb = NULL;
2784
2785         return err;
2786 }
2787
2788 static int btusb_mtk_setup_firmware(struct hci_dev *hdev, const char *fwname)
2789 {
2790         struct btmtk_hci_wmt_params wmt_params;
2791         const struct firmware *fw;
2792         const u8 *fw_ptr;
2793         size_t fw_size;
2794         int err, dlen;
2795         u8 flag;
2796
2797         err = reject_firmware(&fw, fwname, &hdev->dev);
2798         if (err < 0) {
2799                 bt_dev_err(hdev, "Failed to load firmware file (%d)", err);
2800                 return err;
2801         }
2802
2803         fw_ptr = fw->data;
2804         fw_size = fw->size;
2805
2806         /* The size of patch header is 30 bytes, should be skip */
2807         if (fw_size < 30) {
2808                 err = -EINVAL;
2809                 goto err_release_fw;
2810         }
2811
2812         fw_size -= 30;
2813         fw_ptr += 30;
2814         flag = 1;
2815
2816         wmt_params.op = BTMTK_WMT_PATCH_DWNLD;
2817         wmt_params.status = NULL;
2818
2819         while (fw_size > 0) {
2820                 dlen = min_t(int, 250, fw_size);
2821
2822                 /* Tell deivice the position in sequence */
2823                 if (fw_size - dlen <= 0)
2824                         flag = 3;
2825                 else if (fw_size < fw->size - 30)
2826                         flag = 2;
2827
2828                 wmt_params.flag = flag;
2829                 wmt_params.dlen = dlen;
2830                 wmt_params.data = fw_ptr;
2831
2832                 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2833                 if (err < 0) {
2834                         bt_dev_err(hdev, "Failed to send wmt patch dwnld (%d)",
2835                                    err);
2836                         goto err_release_fw;
2837                 }
2838
2839                 fw_size -= dlen;
2840                 fw_ptr += dlen;
2841         }
2842
2843         wmt_params.op = BTMTK_WMT_RST;
2844         wmt_params.flag = 4;
2845         wmt_params.dlen = 0;
2846         wmt_params.data = NULL;
2847         wmt_params.status = NULL;
2848
2849         /* Activate funciton the firmware providing to */
2850         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2851         if (err < 0) {
2852                 bt_dev_err(hdev, "Failed to send wmt rst (%d)", err);
2853                 goto err_release_fw;
2854         }
2855
2856         /* Wait a few moments for firmware activation done */
2857         usleep_range(10000, 12000);
2858
2859 err_release_fw:
2860         release_firmware(fw);
2861
2862         return err;
2863 }
2864
2865 static int btusb_mtk_func_query(struct hci_dev *hdev)
2866 {
2867         struct btmtk_hci_wmt_params wmt_params;
2868         int status, err;
2869         u8 param = 0;
2870
2871         /* Query whether the function is enabled */
2872         wmt_params.op = BTMTK_WMT_FUNC_CTRL;
2873         wmt_params.flag = 4;
2874         wmt_params.dlen = sizeof(param);
2875         wmt_params.data = &param;
2876         wmt_params.status = &status;
2877
2878         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2879         if (err < 0) {
2880                 bt_dev_err(hdev, "Failed to query function status (%d)", err);
2881                 return err;
2882         }
2883
2884         return status;
2885 }
2886
2887 static int btusb_mtk_reg_read(struct btusb_data *data, u32 reg, u32 *val)
2888 {
2889         int pipe, err, size = sizeof(u32);
2890         void *buf;
2891
2892         buf = kzalloc(size, GFP_KERNEL);
2893         if (!buf)
2894                 return -ENOMEM;
2895
2896         pipe = usb_rcvctrlpipe(data->udev, 0);
2897         err = usb_control_msg(data->udev, pipe, 0x63,
2898                               USB_TYPE_VENDOR | USB_DIR_IN,
2899                               reg >> 16, reg & 0xffff,
2900                               buf, size, USB_CTRL_SET_TIMEOUT);
2901         if (err < 0)
2902                 goto err_free_buf;
2903
2904         *val = get_unaligned_le32(buf);
2905
2906 err_free_buf:
2907         kfree(buf);
2908
2909         return err;
2910 }
2911
2912 static int btusb_mtk_id_get(struct btusb_data *data, u32 *id)
2913 {
2914         return btusb_mtk_reg_read(data, 0x80000008, id);
2915 }
2916
2917 static int btusb_mtk_setup(struct hci_dev *hdev)
2918 {
2919         struct btusb_data *data = hci_get_drvdata(hdev);
2920         struct btmtk_hci_wmt_params wmt_params;
2921         ktime_t calltime, delta, rettime;
2922         struct btmtk_tci_sleep tci_sleep;
2923         unsigned long long duration;
2924         struct sk_buff *skb;
2925         const char *fwname;
2926         int err, status;
2927         u32 dev_id;
2928         u8 param;
2929
2930         calltime = ktime_get();
2931
2932         err = btusb_mtk_id_get(data, &dev_id);
2933         if (err < 0) {
2934                 bt_dev_err(hdev, "Failed to get device id (%d)", err);
2935                 return err;
2936         }
2937
2938         switch (dev_id) {
2939         case 0x7663:
2940                 fwname = FIRMWARE_MT7663;
2941                 break;
2942         case 0x7668:
2943                 fwname = FIRMWARE_MT7668;
2944                 break;
2945         default:
2946                 bt_dev_err(hdev, "Unsupported support hardware variant (%08x)",
2947                            dev_id);
2948                 return -ENODEV;
2949         }
2950
2951         /* Query whether the firmware is already download */
2952         wmt_params.op = BTMTK_WMT_SEMAPHORE;
2953         wmt_params.flag = 1;
2954         wmt_params.dlen = 0;
2955         wmt_params.data = NULL;
2956         wmt_params.status = &status;
2957
2958         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2959         if (err < 0) {
2960                 bt_dev_err(hdev, "Failed to query firmware status (%d)", err);
2961                 return err;
2962         }
2963
2964         if (status == BTMTK_WMT_PATCH_DONE) {
2965                 bt_dev_info(hdev, "firmware already downloaded");
2966                 goto ignore_setup_fw;
2967         }
2968
2969         /* Setup a firmware which the device definitely requires */
2970         err = btusb_mtk_setup_firmware(hdev, fwname);
2971         if (err < 0)
2972                 return err;
2973
2974 ignore_setup_fw:
2975         err = readx_poll_timeout(btusb_mtk_func_query, hdev, status,
2976                                  status < 0 || status != BTMTK_WMT_ON_PROGRESS,
2977                                  2000, 5000000);
2978         /* -ETIMEDOUT happens */
2979         if (err < 0)
2980                 return err;
2981
2982         /* The other errors happen in btusb_mtk_func_query */
2983         if (status < 0)
2984                 return status;
2985
2986         if (status == BTMTK_WMT_ON_DONE) {
2987                 bt_dev_info(hdev, "function already on");
2988                 goto ignore_func_on;
2989         }
2990
2991         /* Enable Bluetooth protocol */
2992         param = 1;
2993         wmt_params.op = BTMTK_WMT_FUNC_CTRL;
2994         wmt_params.flag = 0;
2995         wmt_params.dlen = sizeof(param);
2996         wmt_params.data = &param;
2997         wmt_params.status = NULL;
2998
2999         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3000         if (err < 0) {
3001                 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
3002                 return err;
3003         }
3004
3005 ignore_func_on:
3006         /* Apply the low power environment setup */
3007         tci_sleep.mode = 0x5;
3008         tci_sleep.duration = cpu_to_le16(0x640);
3009         tci_sleep.host_duration = cpu_to_le16(0x640);
3010         tci_sleep.host_wakeup_pin = 0;
3011         tci_sleep.time_compensation = 0;
3012
3013         skb = __hci_cmd_sync(hdev, 0xfc7a, sizeof(tci_sleep), &tci_sleep,
3014                              HCI_INIT_TIMEOUT);
3015         if (IS_ERR(skb)) {
3016                 err = PTR_ERR(skb);
3017                 bt_dev_err(hdev, "Failed to apply low power setting (%d)", err);
3018                 return err;
3019         }
3020         kfree_skb(skb);
3021
3022         rettime = ktime_get();
3023         delta = ktime_sub(rettime, calltime);
3024         duration = (unsigned long long)ktime_to_ns(delta) >> 10;
3025
3026         bt_dev_info(hdev, "Device setup in %llu usecs", duration);
3027
3028         return 0;
3029 }
3030
3031 static int btusb_mtk_shutdown(struct hci_dev *hdev)
3032 {
3033         struct btmtk_hci_wmt_params wmt_params;
3034         u8 param = 0;
3035         int err;
3036
3037         /* Disable the device */
3038         wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3039         wmt_params.flag = 0;
3040         wmt_params.dlen = sizeof(param);
3041         wmt_params.data = &param;
3042         wmt_params.status = NULL;
3043
3044         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3045         if (err < 0) {
3046                 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
3047                 return err;
3048         }
3049
3050         return 0;
3051 }
3052
3053 /*(DEBLOBBED)*/
3054 #endif
3055
3056 #ifdef CONFIG_PM
3057 /* Configure an out-of-band gpio as wake-up pin, if specified in device tree */
3058 static int marvell_config_oob_wake(struct hci_dev *hdev)
3059 {
3060         struct sk_buff *skb;
3061         struct btusb_data *data = hci_get_drvdata(hdev);
3062         struct device *dev = &data->udev->dev;
3063         u16 pin, gap, opcode;
3064         int ret;
3065         u8 cmd[5];
3066
3067         /* Move on if no wakeup pin specified */
3068         if (of_property_read_u16(dev->of_node, "marvell,wakeup-pin", &pin) ||
3069             of_property_read_u16(dev->of_node, "marvell,wakeup-gap-ms", &gap))
3070                 return 0;
3071
3072         /* Vendor specific command to configure a GPIO as wake-up pin */
3073         opcode = hci_opcode_pack(0x3F, 0x59);
3074         cmd[0] = opcode & 0xFF;
3075         cmd[1] = opcode >> 8;
3076         cmd[2] = 2; /* length of parameters that follow */
3077         cmd[3] = pin;
3078         cmd[4] = gap; /* time in ms, for which wakeup pin should be asserted */
3079
3080         skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
3081         if (!skb) {
3082                 bt_dev_err(hdev, "%s: No memory\n", __func__);
3083                 return -ENOMEM;
3084         }
3085
3086         skb_put_data(skb, cmd, sizeof(cmd));
3087         hci_skb_pkt_type(skb) = HCI_COMMAND_PKT;
3088
3089         ret = btusb_send_frame(hdev, skb);
3090         if (ret) {
3091                 bt_dev_err(hdev, "%s: configuration failed\n", __func__);
3092                 kfree_skb(skb);
3093                 return ret;
3094         }
3095
3096         return 0;
3097 }
3098 #endif
3099
3100 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
3101                                     const bdaddr_t *bdaddr)
3102 {
3103         struct sk_buff *skb;
3104         u8 buf[8];
3105         long ret;
3106
3107         buf[0] = 0xfe;
3108         buf[1] = sizeof(bdaddr_t);
3109         memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
3110
3111         skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
3112         if (IS_ERR(skb)) {
3113                 ret = PTR_ERR(skb);
3114                 bt_dev_err(hdev, "changing Marvell device address failed (%ld)",
3115                            ret);
3116                 return ret;
3117         }
3118         kfree_skb(skb);
3119
3120         return 0;
3121 }
3122
3123 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
3124                                     const bdaddr_t *bdaddr)
3125 {
3126         struct sk_buff *skb;
3127         u8 buf[10];
3128         long ret;
3129
3130         buf[0] = 0x01;
3131         buf[1] = 0x01;
3132         buf[2] = 0x00;
3133         buf[3] = sizeof(bdaddr_t);
3134         memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
3135
3136         skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
3137         if (IS_ERR(skb)) {
3138                 ret = PTR_ERR(skb);
3139                 bt_dev_err(hdev, "Change address command failed (%ld)", ret);
3140                 return ret;
3141         }
3142         kfree_skb(skb);
3143
3144         return 0;
3145 }
3146
3147 #define QCA_DFU_PACKET_LEN      4096
3148
3149 #define QCA_GET_TARGET_VERSION  0x09
3150 #define QCA_CHECK_STATUS        0x05
3151 #define QCA_DFU_DOWNLOAD        0x01
3152
3153 #define QCA_SYSCFG_UPDATED      0x40
3154 #define QCA_PATCH_UPDATED       0x80
3155 #define QCA_DFU_TIMEOUT         3000
3156
3157 struct qca_version {
3158         __le32  rom_version;
3159         __le32  patch_version;
3160         __le32  ram_version;
3161         __le32  ref_clock;
3162         __u8    reserved[4];
3163 } __packed;
3164
3165 struct qca_rampatch_version {
3166         __le16  rom_version;
3167         __le16  patch_version;
3168 } __packed;
3169
3170 struct qca_device_info {
3171         u32     rom_version;
3172         u8      rampatch_hdr;   /* length of header in rampatch */
3173         u8      nvm_hdr;        /* length of header in NVM */
3174         u8      ver_offset;     /* offset of version structure in rampatch */
3175 };
3176
3177 static const struct qca_device_info qca_devices_table[] = {
3178         { 0x00000100, 20, 4, 10 }, /* Rome 1.0 */
3179         { 0x00000101, 20, 4, 10 }, /* Rome 1.1 */
3180         { 0x00000200, 28, 4, 18 }, /* Rome 2.0 */
3181         { 0x00000201, 28, 4, 18 }, /* Rome 2.1 */
3182         { 0x00000300, 28, 4, 18 }, /* Rome 3.0 */
3183         { 0x00000302, 28, 4, 18 }, /* Rome 3.2 */
3184 };
3185
3186 static int btusb_qca_send_vendor_req(struct usb_device *udev, u8 request,
3187                                      void *data, u16 size)
3188 {
3189         int pipe, err;
3190         u8 *buf;
3191
3192         buf = kmalloc(size, GFP_KERNEL);
3193         if (!buf)
3194                 return -ENOMEM;
3195
3196         /* Found some of USB hosts have IOT issues with ours so that we should
3197          * not wait until HCI layer is ready.
3198          */
3199         pipe = usb_rcvctrlpipe(udev, 0);
3200         err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
3201                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
3202         if (err < 0) {
3203                 dev_err(&udev->dev, "Failed to access otp area (%d)", err);
3204                 goto done;
3205         }
3206
3207         memcpy(data, buf, size);
3208
3209 done:
3210         kfree(buf);
3211
3212         return err;
3213 }
3214
3215 static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
3216                                        const struct firmware *firmware,
3217                                        size_t hdr_size)
3218 {
3219         struct btusb_data *btdata = hci_get_drvdata(hdev);
3220         struct usb_device *udev = btdata->udev;
3221         size_t count, size, sent = 0;
3222         int pipe, len, err;
3223         u8 *buf;
3224
3225         buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
3226         if (!buf)
3227                 return -ENOMEM;
3228
3229         count = firmware->size;
3230
3231         size = min_t(size_t, count, hdr_size);
3232         memcpy(buf, firmware->data, size);
3233
3234         /* USB patches should go down to controller through USB path
3235          * because binary format fits to go down through USB channel.
3236          * USB control path is for patching headers and USB bulk is for
3237          * patch body.
3238          */
3239         pipe = usb_sndctrlpipe(udev, 0);
3240         err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
3241                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
3242         if (err < 0) {
3243                 bt_dev_err(hdev, "Failed to send headers (%d)", err);
3244                 goto done;
3245         }
3246
3247         sent += size;
3248         count -= size;
3249
3250         while (count) {
3251                 size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
3252
3253                 memcpy(buf, firmware->data + sent, size);
3254
3255                 pipe = usb_sndbulkpipe(udev, 0x02);
3256                 err = usb_bulk_msg(udev, pipe, buf, size, &len,
3257                                    QCA_DFU_TIMEOUT);
3258                 if (err < 0) {
3259                         bt_dev_err(hdev, "Failed to send body at %zd of %zd (%d)",
3260                                    sent, firmware->size, err);
3261                         break;
3262                 }
3263
3264                 if (size != len) {
3265                         bt_dev_err(hdev, "Failed to get bulk buffer");
3266                         err = -EILSEQ;
3267                         break;
3268                 }
3269
3270                 sent  += size;
3271                 count -= size;
3272         }
3273
3274 done:
3275         kfree(buf);
3276         return err;
3277 }
3278
3279 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
3280                                          struct qca_version *ver,
3281                                          const struct qca_device_info *info)
3282 {
3283         struct qca_rampatch_version *rver;
3284         const struct firmware *fw;
3285         u32 ver_rom, ver_patch;
3286         u16 rver_rom, rver_patch;
3287         char fwname[64];
3288         int err;
3289
3290         ver_rom = le32_to_cpu(ver->rom_version);
3291         ver_patch = le32_to_cpu(ver->patch_version);
3292
3293         snprintf(fwname, sizeof(fwname), "/*(DEBLOBBED)*/", ver_rom);
3294
3295         err = reject_firmware(&fw, fwname, &hdev->dev);
3296         if (err) {
3297                 bt_dev_err(hdev, "failed to request rampatch file: %s (%d)",
3298                            fwname, err);
3299                 return err;
3300         }
3301
3302         bt_dev_info(hdev, "using rampatch file: %s", fwname);
3303
3304         rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
3305         rver_rom = le16_to_cpu(rver->rom_version);
3306         rver_patch = le16_to_cpu(rver->patch_version);
3307
3308         bt_dev_info(hdev, "QCA: patch rome 0x%x build 0x%x, "
3309                     "firmware rome 0x%x build 0x%x",
3310                     rver_rom, rver_patch, ver_rom, ver_patch);
3311
3312         if (rver_rom != ver_rom || rver_patch <= ver_patch) {
3313                 bt_dev_err(hdev, "rampatch file version did not match with firmware");
3314                 err = -EINVAL;
3315                 goto done;
3316         }
3317
3318         err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
3319
3320 done:
3321         release_firmware(fw);
3322
3323         return err;
3324 }
3325
3326 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
3327                                     struct qca_version *ver,
3328                                     const struct qca_device_info *info)
3329 {
3330         const struct firmware *fw;
3331         char fwname[64];
3332         int err;
3333
3334         snprintf(fwname, sizeof(fwname), "/*(DEBLOBBED)*/",
3335                  le32_to_cpu(ver->rom_version));
3336
3337         err = reject_firmware(&fw, fwname, &hdev->dev);
3338         if (err) {
3339                 bt_dev_err(hdev, "failed to request NVM file: %s (%d)",
3340                            fwname, err);
3341                 return err;
3342         }
3343
3344         bt_dev_info(hdev, "using NVM file: %s", fwname);
3345
3346         err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
3347
3348         release_firmware(fw);
3349
3350         return err;
3351 }
3352
3353 /* identify the ROM version and check whether patches are needed */
3354 static bool btusb_qca_need_patch(struct usb_device *udev)
3355 {
3356         struct qca_version ver;
3357
3358         if (btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3359                                       sizeof(ver)) < 0)
3360                 return false;
3361         /* only low ROM versions need patches */
3362         return !(le32_to_cpu(ver.rom_version) & ~0xffffU);
3363 }
3364
3365 static int btusb_setup_qca(struct hci_dev *hdev)
3366 {
3367         struct btusb_data *btdata = hci_get_drvdata(hdev);
3368         struct usb_device *udev = btdata->udev;
3369         const struct qca_device_info *info = NULL;
3370         struct qca_version ver;
3371         u32 ver_rom;
3372         u8 status;
3373         int i, err;
3374
3375         err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3376                                         sizeof(ver));
3377         if (err < 0)
3378                 return err;
3379
3380         ver_rom = le32_to_cpu(ver.rom_version);
3381         /* Don't care about high ROM versions */
3382         if (ver_rom & ~0xffffU)
3383                 return 0;
3384
3385         for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
3386                 if (ver_rom == qca_devices_table[i].rom_version)
3387                         info = &qca_devices_table[i];
3388         }
3389         if (!info) {
3390                 bt_dev_err(hdev, "don't support firmware rome 0x%x", ver_rom);
3391                 return -ENODEV;
3392         }
3393
3394         err = btusb_qca_send_vendor_req(udev, QCA_CHECK_STATUS, &status,
3395                                         sizeof(status));
3396         if (err < 0)
3397                 return err;
3398
3399         if (!(status & QCA_PATCH_UPDATED)) {
3400                 err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
3401                 if (err < 0)
3402                         return err;
3403         }
3404
3405         if (!(status & QCA_SYSCFG_UPDATED)) {
3406                 err = btusb_setup_qca_load_nvm(hdev, &ver, info);
3407                 if (err < 0)
3408                         return err;
3409         }
3410
3411         return 0;
3412 }
3413
3414 #ifdef CONFIG_BT_HCIBTUSB_BCM
3415 static inline int __set_diag_interface(struct hci_dev *hdev)
3416 {
3417         struct btusb_data *data = hci_get_drvdata(hdev);
3418         struct usb_interface *intf = data->diag;
3419         int i;
3420
3421         if (!data->diag)
3422                 return -ENODEV;
3423
3424         data->diag_tx_ep = NULL;
3425         data->diag_rx_ep = NULL;
3426
3427         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
3428                 struct usb_endpoint_descriptor *ep_desc;
3429
3430                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
3431
3432                 if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
3433                         data->diag_tx_ep = ep_desc;
3434                         continue;
3435                 }
3436
3437                 if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
3438                         data->diag_rx_ep = ep_desc;
3439                         continue;
3440                 }
3441         }
3442
3443         if (!data->diag_tx_ep || !data->diag_rx_ep) {
3444                 bt_dev_err(hdev, "invalid diagnostic descriptors");
3445                 return -ENODEV;
3446         }
3447
3448         return 0;
3449 }
3450
3451 static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable)
3452 {
3453         struct btusb_data *data = hci_get_drvdata(hdev);
3454         struct sk_buff *skb;
3455         struct urb *urb;
3456         unsigned int pipe;
3457
3458         if (!data->diag_tx_ep)
3459                 return ERR_PTR(-ENODEV);
3460
3461         urb = usb_alloc_urb(0, GFP_KERNEL);
3462         if (!urb)
3463                 return ERR_PTR(-ENOMEM);
3464
3465         skb = bt_skb_alloc(2, GFP_KERNEL);
3466         if (!skb) {
3467                 usb_free_urb(urb);
3468                 return ERR_PTR(-ENOMEM);
3469         }
3470
3471         skb_put_u8(skb, 0xf0);
3472         skb_put_u8(skb, enable);
3473
3474         pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress);
3475
3476         usb_fill_bulk_urb(urb, data->udev, pipe,
3477                           skb->data, skb->len, btusb_tx_complete, skb);
3478
3479         skb->dev = (void *)hdev;
3480
3481         return urb;
3482 }
3483
3484 static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable)
3485 {
3486         struct btusb_data *data = hci_get_drvdata(hdev);
3487         struct urb *urb;
3488
3489         if (!data->diag)
3490                 return -ENODEV;
3491
3492         if (!test_bit(HCI_RUNNING, &hdev->flags))
3493                 return -ENETDOWN;
3494
3495         urb = alloc_diag_urb(hdev, enable);
3496         if (IS_ERR(urb))
3497                 return PTR_ERR(urb);
3498
3499         return submit_or_queue_tx_urb(hdev, urb);
3500 }
3501 #endif
3502
3503 #ifdef CONFIG_PM
3504 static irqreturn_t btusb_oob_wake_handler(int irq, void *priv)
3505 {
3506         struct btusb_data *data = priv;
3507
3508         pm_wakeup_event(&data->udev->dev, 0);
3509         pm_system_wakeup();
3510
3511         /* Disable only if not already disabled (keep it balanced) */
3512         if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
3513                 disable_irq_nosync(irq);
3514                 disable_irq_wake(irq);
3515         }
3516         return IRQ_HANDLED;
3517 }
3518
3519 static const struct of_device_id btusb_match_table[] = {
3520         { .compatible = "usb1286,204e" },
3521         { .compatible = "usbcf3,e300" }, /* QCA6174A */
3522         { .compatible = "usb4ca,301a" }, /* QCA6174A (Lite-On) */
3523         { }
3524 };
3525 MODULE_DEVICE_TABLE(of, btusb_match_table);
3526
3527 /* Use an oob wakeup pin? */
3528 static int btusb_config_oob_wake(struct hci_dev *hdev)
3529 {
3530         struct btusb_data *data = hci_get_drvdata(hdev);
3531         struct device *dev = &data->udev->dev;
3532         int irq, ret;
3533
3534         clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
3535
3536         if (!of_match_device(btusb_match_table, dev))
3537                 return 0;
3538
3539         /* Move on if no IRQ specified */
3540         irq = of_irq_get_byname(dev->of_node, "wakeup");
3541         if (irq <= 0) {
3542                 bt_dev_dbg(hdev, "%s: no OOB Wakeup IRQ in DT", __func__);
3543                 return 0;
3544         }
3545
3546         irq_set_status_flags(irq, IRQ_NOAUTOEN);
3547         ret = devm_request_irq(&hdev->dev, irq, btusb_oob_wake_handler,
3548                                0, "OOB Wake-on-BT", data);
3549         if (ret) {
3550                 bt_dev_err(hdev, "%s: IRQ request failed", __func__);
3551                 return ret;
3552         }
3553
3554         ret = device_init_wakeup(dev, true);
3555         if (ret) {
3556                 bt_dev_err(hdev, "%s: failed to init_wakeup", __func__);
3557                 return ret;
3558         }
3559
3560         data->oob_wake_irq = irq;
3561         bt_dev_info(hdev, "OOB Wake-on-BT configured at IRQ %u", irq);
3562         return 0;
3563 }
3564 #endif
3565
3566 static void btusb_check_needs_reset_resume(struct usb_interface *intf)
3567 {
3568         if (dmi_check_system(btusb_needs_reset_resume_table))
3569                 interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME;
3570 }
3571
3572 static int btusb_probe(struct usb_interface *intf,
3573                        const struct usb_device_id *id)
3574 {
3575         struct usb_endpoint_descriptor *ep_desc;
3576         struct gpio_desc *reset_gpio;
3577         struct btusb_data *data;
3578         struct hci_dev *hdev;
3579         unsigned ifnum_base;
3580         int i, err;
3581
3582         BT_DBG("intf %p id %p", intf, id);
3583
3584         /* interface numbers are hardcoded in the spec */
3585         if (intf->cur_altsetting->desc.bInterfaceNumber != 0) {
3586                 if (!(id->driver_info & BTUSB_IFNUM_2))
3587                         return -ENODEV;
3588                 if (intf->cur_altsetting->desc.bInterfaceNumber != 2)
3589                         return -ENODEV;
3590         }
3591
3592         ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber;
3593
3594         if (!id->driver_info) {
3595                 const struct usb_device_id *match;
3596
3597                 match = usb_match_id(intf, blacklist_table);
3598                 if (match)
3599                         id = match;
3600         }
3601
3602         if (id->driver_info == BTUSB_IGNORE)
3603                 return -ENODEV;
3604
3605         if (id->driver_info & BTUSB_ATH3012) {
3606                 struct usb_device *udev = interface_to_usbdev(intf);
3607
3608                 /* Old firmware would otherwise let ath3k driver load
3609                  * patch and sysconfig files
3610                  */
3611                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001 &&
3612                     !btusb_qca_need_patch(udev))
3613                         return -ENODEV;
3614         }
3615
3616         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
3617         if (!data)
3618                 return -ENOMEM;
3619
3620         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
3621                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
3622
3623                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
3624                         data->intr_ep = ep_desc;
3625                         continue;
3626                 }
3627
3628                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
3629                         data->bulk_tx_ep = ep_desc;
3630                         continue;
3631                 }
3632
3633                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
3634                         data->bulk_rx_ep = ep_desc;
3635                         continue;
3636                 }
3637         }
3638
3639         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
3640                 return -ENODEV;
3641
3642         if (id->driver_info & BTUSB_AMP) {
3643                 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
3644                 data->cmdreq = 0x2b;
3645         } else {
3646                 data->cmdreq_type = USB_TYPE_CLASS;
3647                 data->cmdreq = 0x00;
3648         }
3649
3650         data->udev = interface_to_usbdev(intf);
3651         data->intf = intf;
3652
3653         INIT_WORK(&data->work, btusb_work);
3654         INIT_WORK(&data->waker, btusb_waker);
3655         init_usb_anchor(&data->deferred);
3656         init_usb_anchor(&data->tx_anchor);
3657         spin_lock_init(&data->txlock);
3658
3659         init_usb_anchor(&data->intr_anchor);
3660         init_usb_anchor(&data->bulk_anchor);
3661         init_usb_anchor(&data->isoc_anchor);
3662         init_usb_anchor(&data->diag_anchor);
3663         init_usb_anchor(&data->ctrl_anchor);
3664         spin_lock_init(&data->rxlock);
3665
3666         if (id->driver_info & BTUSB_INTEL_NEW) {
3667                 data->recv_event = btusb_recv_event_intel;
3668                 data->recv_bulk = btusb_recv_bulk_intel;
3669                 set_bit(BTUSB_BOOTLOADER, &data->flags);
3670         } else {
3671                 data->recv_event = hci_recv_frame;
3672                 data->recv_bulk = btusb_recv_bulk;
3673         }
3674
3675         hdev = hci_alloc_dev();
3676         if (!hdev)
3677                 return -ENOMEM;
3678
3679         hdev->bus = HCI_USB;
3680         hci_set_drvdata(hdev, data);
3681
3682         if (id->driver_info & BTUSB_AMP)
3683                 hdev->dev_type = HCI_AMP;
3684         else
3685                 hdev->dev_type = HCI_PRIMARY;
3686
3687         data->hdev = hdev;
3688
3689         SET_HCIDEV_DEV(hdev, &intf->dev);
3690
3691         reset_gpio = gpiod_get_optional(&data->udev->dev, "reset",
3692                                         GPIOD_OUT_LOW);
3693         if (IS_ERR(reset_gpio)) {
3694                 err = PTR_ERR(reset_gpio);
3695                 goto out_free_dev;
3696         } else if (reset_gpio) {
3697                 data->reset_gpio = reset_gpio;
3698         }
3699
3700         hdev->open   = btusb_open;
3701         hdev->close  = btusb_close;
3702         hdev->flush  = btusb_flush;
3703         hdev->send   = btusb_send_frame;
3704         hdev->notify = btusb_notify;
3705
3706 #ifdef CONFIG_PM
3707         err = btusb_config_oob_wake(hdev);
3708         if (err)
3709                 goto out_free_dev;
3710
3711         /* Marvell devices may need a specific chip configuration */
3712         if (id->driver_info & BTUSB_MARVELL && data->oob_wake_irq) {
3713                 err = marvell_config_oob_wake(hdev);
3714                 if (err)
3715                         goto out_free_dev;
3716         }
3717 #endif
3718         if (id->driver_info & BTUSB_CW6622)
3719                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
3720
3721         if (id->driver_info & BTUSB_BCM2045)
3722                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
3723
3724         if (id->driver_info & BTUSB_BCM92035)
3725                 hdev->setup = btusb_setup_bcm92035;
3726
3727 #ifdef CONFIG_BT_HCIBTUSB_BCM
3728         if (id->driver_info & BTUSB_BCM_PATCHRAM) {
3729                 hdev->manufacturer = 15;
3730                 hdev->setup = btbcm_setup_patchram;
3731                 hdev->set_diag = btusb_bcm_set_diag;
3732                 hdev->set_bdaddr = btbcm_set_bdaddr;
3733
3734                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
3735                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
3736         }
3737
3738         if (id->driver_info & BTUSB_BCM_APPLE) {
3739                 hdev->manufacturer = 15;
3740                 hdev->setup = btbcm_setup_apple;
3741                 hdev->set_diag = btusb_bcm_set_diag;
3742
3743                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
3744                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
3745         }
3746 #endif
3747
3748         if (id->driver_info & BTUSB_INTEL) {
3749                 hdev->manufacturer = 2;
3750                 hdev->setup = btusb_setup_intel;
3751                 hdev->shutdown = btusb_shutdown_intel;
3752                 hdev->set_diag = btintel_set_diag_mfg;
3753                 hdev->set_bdaddr = btintel_set_bdaddr;
3754                 hdev->cmd_timeout = btusb_intel_cmd_timeout;
3755                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3756                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3757                 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
3758         }
3759
3760         if (id->driver_info & BTUSB_INTEL_NEW) {
3761                 hdev->manufacturer = 2;
3762                 hdev->send = btusb_send_frame_intel;
3763                 hdev->setup = btusb_setup_intel_new;
3764                 hdev->shutdown = btusb_shutdown_intel_new;
3765                 hdev->hw_error = btintel_hw_error;
3766                 hdev->set_diag = btintel_set_diag;
3767                 hdev->set_bdaddr = btintel_set_bdaddr;
3768                 hdev->cmd_timeout = btusb_intel_cmd_timeout;
3769                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3770                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3771                 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
3772         }
3773
3774         if (id->driver_info & BTUSB_MARVELL)
3775                 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
3776
3777 #ifdef CONFIG_BT_HCIBTUSB_MTK
3778         if (id->driver_info & BTUSB_MEDIATEK) {
3779                 hdev->setup = btusb_mtk_setup;
3780                 hdev->shutdown = btusb_mtk_shutdown;
3781                 hdev->manufacturer = 70;
3782                 set_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks);
3783         }
3784 #endif
3785
3786         if (id->driver_info & BTUSB_SWAVE) {
3787                 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
3788                 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
3789         }
3790
3791         if (id->driver_info & BTUSB_INTEL_BOOT) {
3792                 hdev->manufacturer = 2;
3793                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3794         }
3795
3796         if (id->driver_info & BTUSB_ATH3012) {
3797                 data->setup_on_usb = btusb_setup_qca;
3798                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
3799                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3800                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3801         }
3802
3803         if (id->driver_info & BTUSB_QCA_ROME) {
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                 btusb_check_needs_reset_resume(intf);
3808         }
3809
3810         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_RTL) &&
3811             (id->driver_info & BTUSB_REALTEK)) {
3812                 hdev->setup = btrtl_setup_realtek;
3813                 hdev->shutdown = btrtl_shutdown_realtek;
3814                 hdev->cmd_timeout = btusb_rtl_cmd_timeout;
3815
3816                 /* Realtek devices lose their updated firmware over global
3817                  * suspend that means host doesn't send SET_FEATURE
3818                  * (DEVICE_REMOTE_WAKEUP)
3819                  */
3820                 set_bit(BTUSB_WAKEUP_DISABLE, &data->flags);
3821
3822                 err = usb_autopm_get_interface(intf);
3823                 if (err < 0)
3824                         goto out_free_dev;
3825         }
3826
3827         if (id->driver_info & BTUSB_AMP) {
3828                 /* AMP controllers do not support SCO packets */
3829                 data->isoc = NULL;
3830         } else {
3831                 /* Interface orders are hardcoded in the specification */
3832                 data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1);
3833                 data->isoc_ifnum = ifnum_base + 1;
3834         }
3835
3836         if (!reset)
3837                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3838
3839         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
3840                 if (!disable_scofix)
3841                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
3842         }
3843
3844         if (id->driver_info & BTUSB_BROKEN_ISOC)
3845                 data->isoc = NULL;
3846
3847         if (id->driver_info & BTUSB_DIGIANSWER) {
3848                 data->cmdreq_type = USB_TYPE_VENDOR;
3849                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3850         }
3851
3852         if (id->driver_info & BTUSB_CSR) {
3853                 struct usb_device *udev = data->udev;
3854                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
3855
3856                 /* Old firmware would otherwise execute USB reset */
3857                 if (bcdDevice < 0x117)
3858                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3859
3860                 /* Fake CSR devices with broken commands */
3861                 if (bcdDevice <= 0x100 || bcdDevice == 0x134)
3862                         hdev->setup = btusb_setup_csr;
3863
3864                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3865         }
3866
3867         if (id->driver_info & BTUSB_SNIFFER) {
3868                 struct usb_device *udev = data->udev;
3869
3870                 /* New sniffer firmware has crippled HCI interface */
3871                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
3872                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3873         }
3874
3875         if (id->driver_info & BTUSB_INTEL_BOOT) {
3876                 /* A bug in the bootloader causes that interrupt interface is
3877                  * only enabled after receiving SetInterface(0, AltSetting=0).
3878                  */
3879                 err = usb_set_interface(data->udev, 0, 0);
3880                 if (err < 0) {
3881                         BT_ERR("failed to set interface 0, alt 0 %d", err);
3882                         goto out_free_dev;
3883                 }
3884         }
3885
3886         if (data->isoc) {
3887                 err = usb_driver_claim_interface(&btusb_driver,
3888                                                  data->isoc, data);
3889                 if (err < 0)
3890                         goto out_free_dev;
3891         }
3892
3893 #ifdef CONFIG_BT_HCIBTUSB_BCM
3894         if (data->diag) {
3895                 if (!usb_driver_claim_interface(&btusb_driver,
3896                                                 data->diag, data))
3897                         __set_diag_interface(hdev);
3898                 else
3899                         data->diag = NULL;
3900         }
3901 #endif
3902
3903         if (enable_autosuspend)
3904                 usb_enable_autosuspend(data->udev);
3905
3906         err = hci_register_dev(hdev);
3907         if (err < 0)
3908                 goto out_free_dev;
3909
3910         usb_set_intfdata(intf, data);
3911
3912         return 0;
3913
3914 out_free_dev:
3915         if (data->reset_gpio)
3916                 gpiod_put(data->reset_gpio);
3917         hci_free_dev(hdev);
3918         return err;
3919 }
3920
3921 static void btusb_disconnect(struct usb_interface *intf)
3922 {
3923         struct btusb_data *data = usb_get_intfdata(intf);
3924         struct hci_dev *hdev;
3925
3926         BT_DBG("intf %p", intf);
3927
3928         if (!data)
3929                 return;
3930
3931         hdev = data->hdev;
3932         usb_set_intfdata(data->intf, NULL);
3933
3934         if (data->isoc)
3935                 usb_set_intfdata(data->isoc, NULL);
3936
3937         if (data->diag)
3938                 usb_set_intfdata(data->diag, NULL);
3939
3940         hci_unregister_dev(hdev);
3941
3942         if (intf == data->intf) {
3943                 if (data->isoc)
3944                         usb_driver_release_interface(&btusb_driver, data->isoc);
3945                 if (data->diag)
3946                         usb_driver_release_interface(&btusb_driver, data->diag);
3947         } else if (intf == data->isoc) {
3948                 if (data->diag)
3949                         usb_driver_release_interface(&btusb_driver, data->diag);
3950                 usb_driver_release_interface(&btusb_driver, data->intf);
3951         } else if (intf == data->diag) {
3952                 usb_driver_release_interface(&btusb_driver, data->intf);
3953                 if (data->isoc)
3954                         usb_driver_release_interface(&btusb_driver, data->isoc);
3955         }
3956
3957         if (data->oob_wake_irq)
3958                 device_init_wakeup(&data->udev->dev, false);
3959
3960         if (data->reset_gpio)
3961                 gpiod_put(data->reset_gpio);
3962
3963         hci_free_dev(hdev);
3964 }
3965
3966 #ifdef CONFIG_PM
3967 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
3968 {
3969         struct btusb_data *data = usb_get_intfdata(intf);
3970
3971         BT_DBG("intf %p", intf);
3972
3973         if (data->suspend_count++)
3974                 return 0;
3975
3976         spin_lock_irq(&data->txlock);
3977         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
3978                 set_bit(BTUSB_SUSPENDING, &data->flags);
3979                 spin_unlock_irq(&data->txlock);
3980         } else {
3981                 spin_unlock_irq(&data->txlock);
3982                 data->suspend_count--;
3983                 return -EBUSY;
3984         }
3985
3986         cancel_work_sync(&data->work);
3987
3988         btusb_stop_traffic(data);
3989         usb_kill_anchored_urbs(&data->tx_anchor);
3990
3991         if (data->oob_wake_irq && device_may_wakeup(&data->udev->dev)) {
3992                 set_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
3993                 enable_irq_wake(data->oob_wake_irq);
3994                 enable_irq(data->oob_wake_irq);
3995         }
3996
3997         /* For global suspend, Realtek devices lose the loaded fw
3998          * in them. But for autosuspend, firmware should remain.
3999          * Actually, it depends on whether the usb host sends
4000          * set feature (enable wakeup) or not.
4001          */
4002         if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags)) {
4003                 if (PMSG_IS_AUTO(message) &&
4004                     device_can_wakeup(&data->udev->dev))
4005                         data->udev->do_remote_wakeup = 1;
4006                 else if (!PMSG_IS_AUTO(message))
4007                         data->udev->reset_resume = 1;
4008         }
4009
4010         return 0;
4011 }
4012
4013 static void play_deferred(struct btusb_data *data)
4014 {
4015         struct urb *urb;
4016         int err;
4017
4018         while ((urb = usb_get_from_anchor(&data->deferred))) {
4019                 usb_anchor_urb(urb, &data->tx_anchor);
4020
4021                 err = usb_submit_urb(urb, GFP_ATOMIC);
4022                 if (err < 0) {
4023                         if (err != -EPERM && err != -ENODEV)
4024                                 BT_ERR("%s urb %p submission failed (%d)",
4025                                        data->hdev->name, urb, -err);
4026                         kfree(urb->setup_packet);
4027                         usb_unanchor_urb(urb);
4028                         usb_free_urb(urb);
4029                         break;
4030                 }
4031
4032                 data->tx_in_flight++;
4033                 usb_free_urb(urb);
4034         }
4035
4036         /* Cleanup the rest deferred urbs. */
4037         while ((urb = usb_get_from_anchor(&data->deferred))) {
4038                 kfree(urb->setup_packet);
4039                 usb_free_urb(urb);
4040         }
4041 }
4042
4043 static int btusb_resume(struct usb_interface *intf)
4044 {
4045         struct btusb_data *data = usb_get_intfdata(intf);
4046         struct hci_dev *hdev = data->hdev;
4047         int err = 0;
4048
4049         BT_DBG("intf %p", intf);
4050
4051         if (--data->suspend_count)
4052                 return 0;
4053
4054         /* Disable only if not already disabled (keep it balanced) */
4055         if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
4056                 disable_irq(data->oob_wake_irq);
4057                 disable_irq_wake(data->oob_wake_irq);
4058         }
4059
4060         if (!test_bit(HCI_RUNNING, &hdev->flags))
4061                 goto done;
4062
4063         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
4064                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
4065                 if (err < 0) {
4066                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
4067                         goto failed;
4068                 }
4069         }
4070
4071         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
4072                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
4073                 if (err < 0) {
4074                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
4075                         goto failed;
4076                 }
4077
4078                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
4079         }
4080
4081         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
4082                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
4083                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
4084                 else
4085                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
4086         }
4087
4088         spin_lock_irq(&data->txlock);
4089         play_deferred(data);
4090         clear_bit(BTUSB_SUSPENDING, &data->flags);
4091         spin_unlock_irq(&data->txlock);
4092         schedule_work(&data->work);
4093
4094         return 0;
4095
4096 failed:
4097         usb_scuttle_anchored_urbs(&data->deferred);
4098 done:
4099         spin_lock_irq(&data->txlock);
4100         clear_bit(BTUSB_SUSPENDING, &data->flags);
4101         spin_unlock_irq(&data->txlock);
4102
4103         return err;
4104 }
4105 #endif
4106
4107 static struct usb_driver btusb_driver = {
4108         .name           = "btusb",
4109         .probe          = btusb_probe,
4110         .disconnect     = btusb_disconnect,
4111 #ifdef CONFIG_PM
4112         .suspend        = btusb_suspend,
4113         .resume         = btusb_resume,
4114 #endif
4115         .id_table       = btusb_table,
4116         .supports_autosuspend = 1,
4117         .disable_hub_initiated_lpm = 1,
4118 };
4119
4120 module_usb_driver(btusb_driver);
4121
4122 module_param(disable_scofix, bool, 0644);
4123 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
4124
4125 module_param(force_scofix, bool, 0644);
4126 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
4127
4128 module_param(enable_autosuspend, bool, 0644);
4129 MODULE_PARM_DESC(enable_autosuspend, "Enable USB autosuspend by default");
4130
4131 module_param(reset, bool, 0644);
4132 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
4133
4134 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
4135 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
4136 MODULE_VERSION(VERSION);
4137 MODULE_LICENSE("GPL");