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 #define BTUSB_WIDEBAND_SPEECH   0x400000
  61 #define BTUSB_VALID_LE_STATES   0x800000
  62 #define BTUSB_QCA_WCN6855       0x1000000
  63 #define BTUSB_INTEL_NEWGEN      0x2000000
  64
  65 static const struct usb_device_id btusb_table[] = {
  66         /* Generic Bluetooth USB device */
  67         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  68
  69         /* Generic Bluetooth AMP device */
  70         { USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP },
  71
  72         /* Generic Bluetooth USB interface */
  73         { USB_INTERFACE_INFO(0xe0, 0x01, 0x01) },
  74
  75         /* Apple-specific (Broadcom) devices */
  76         { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01),
  77           .driver_info = BTUSB_BCM_APPLE | BTUSB_IFNUM_2 },
  78
  79         /* MediaTek MT76x0E */
  80         { USB_DEVICE(0x0e8d, 0x763f) },
  81
  82         /* Broadcom SoftSailing reporting vendor specific */
  83         { USB_DEVICE(0x0a5c, 0x21e1) },
  84
  85         /* Apple MacBookPro 7,1 */
  86         { USB_DEVICE(0x05ac, 0x8213) },
  87
  88         /* Apple iMac11,1 */
  89         { USB_DEVICE(0x05ac, 0x8215) },
  90
  91         /* Apple MacBookPro6,2 */
  92         { USB_DEVICE(0x05ac, 0x8218) },
  93
  94         /* Apple MacBookAir3,1, MacBookAir3,2 */
  95         { USB_DEVICE(0x05ac, 0x821b) },
  96
  97         /* Apple MacBookAir4,1 */
  98         { USB_DEVICE(0x05ac, 0x821f) },
  99
 100         /* Apple MacBookPro8,2 */
 101         { USB_DEVICE(0x05ac, 0x821a) },
 102
 103         /* Apple MacMini5,1 */
 104         { USB_DEVICE(0x05ac, 0x8281) },
 105
 106         /* AVM BlueFRITZ! USB v2.0 */
 107         { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE },
 108
 109         /* Bluetooth Ultraport Module from IBM */
 110         { USB_DEVICE(0x04bf, 0x030a) },
 111
 112         /* ALPS Modules with non-standard id */
 113         { USB_DEVICE(0x044e, 0x3001) },
 114         { USB_DEVICE(0x044e, 0x3002) },
 115
 116         /* Ericsson with non-standard id */
 117         { USB_DEVICE(0x0bdb, 0x1002) },
 118
 119         /* Canyon CN-BTU1 with HID interfaces */
 120         { USB_DEVICE(0x0c10, 0x0000) },
 121
 122         /* Broadcom BCM20702A0 */
 123         { USB_DEVICE(0x413c, 0x8197) },
 124
 125         /* Broadcom BCM20702B0 (Dynex/Insignia) */
 126         { USB_DEVICE(0x19ff, 0x0239), .driver_info = BTUSB_BCM_PATCHRAM },
 127
 128         /* Broadcom BCM43142A0 (Foxconn/Lenovo) */
 129         { USB_VENDOR_AND_INTERFACE_INFO(0x105b, 0xff, 0x01, 0x01),
 130           .driver_info = BTUSB_BCM_PATCHRAM },
 131
 132         /* Broadcom BCM920703 (HTC Vive) */
 133         { USB_VENDOR_AND_INTERFACE_INFO(0x0bb4, 0xff, 0x01, 0x01),
 134           .driver_info = BTUSB_BCM_PATCHRAM },
 135
 136         /* Foxconn - Hon Hai */
 137         { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01),
 138           .driver_info = BTUSB_BCM_PATCHRAM },
 139
 140         /* Lite-On Technology - Broadcom based */
 141         { USB_VENDOR_AND_INTERFACE_INFO(0x04ca, 0xff, 0x01, 0x01),
 142           .driver_info = BTUSB_BCM_PATCHRAM },
 143
 144         /* Broadcom devices with vendor specific id */
 145         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
 146           .driver_info = BTUSB_BCM_PATCHRAM },
 147
 148         /* ASUSTek Computer - Broadcom based */
 149         { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01),
 150           .driver_info = BTUSB_BCM_PATCHRAM },
 151
 152         /* Belkin F8065bf - Broadcom based */
 153         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01),
 154           .driver_info = BTUSB_BCM_PATCHRAM },
 155
 156         /* IMC Networks - Broadcom based */
 157         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01),
 158           .driver_info = BTUSB_BCM_PATCHRAM },
 159
 160         /* Dell Computer - Broadcom based  */
 161         { USB_VENDOR_AND_INTERFACE_INFO(0x413c, 0xff, 0x01, 0x01),
 162           .driver_info = BTUSB_BCM_PATCHRAM },
 163
 164         /* Toshiba Corp - Broadcom based */
 165         { USB_VENDOR_AND_INTERFACE_INFO(0x0930, 0xff, 0x01, 0x01),
 166           .driver_info = BTUSB_BCM_PATCHRAM },
 167
 168         /* Intel Bluetooth USB Bootloader (RAM module) */
 169         { USB_DEVICE(0x8087, 0x0a5a),
 170           .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
 171
 172         { }     /* Terminating entry */
 173 };
 174
 175 MODULE_DEVICE_TABLE(usb, btusb_table);
 176
 177 static const struct usb_device_id blacklist_table[] = {
 178         /* CSR BlueCore devices */
 179         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 180
 181         /* Broadcom BCM2033 without firmware */
 182         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 183
 184         /* Broadcom BCM2045 devices */
 185         { USB_DEVICE(0x0a5c, 0x2045), .driver_info = BTUSB_BCM2045 },
 186
 187         /* Atheros 3011 with sflash firmware */
 188         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 189         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 190         { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE },
 191         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 192         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 193         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 194         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 195
 196         /* Atheros AR9285 Malbec with sflash firmware */
 197         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 198
 199         /* Atheros 3012 with sflash firmware */
 200         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 201         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 202         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 203         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 204         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 205         { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
 206         { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
 207         { USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 },
 208         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 209         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 210         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 211         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 212         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 213         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 214         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 215         { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
 216         { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
 217         { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
 218         { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 },
 219         { USB_DEVICE(0x04ca, 0x3018), .driver_info = BTUSB_ATH3012 },
 220         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 221         { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
 222         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 223         { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
 224         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 225         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 226         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 227         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 228         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 229         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
 230         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 231         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 232         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 233         { USB_DEVICE(0x0cf3, 0x817b), .driver_info = BTUSB_ATH3012 },
 234         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 235         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 236         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 237         { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 },
 238         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 239         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 240         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 241         { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 },
 242         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 243         { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
 244         { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
 245         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
 246         { USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 },
 247         { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
 248         { USB_DEVICE(0x13d3, 0x3487), .driver_info = BTUSB_ATH3012 },
 249         { USB_DEVICE(0x13d3, 0x3490), .driver_info = BTUSB_ATH3012 },
 250
 251         /* Atheros AR5BBU12 with sflash firmware */
 252         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 253
 254         /* Atheros AR5BBU12 with sflash firmware */
 255         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 256         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 257
 258         /* QCA ROME chipset */
 259         { USB_DEVICE(0x0cf3, 0x535b), .driver_info = BTUSB_QCA_ROME |
 260                                                      BTUSB_WIDEBAND_SPEECH },
 261         { USB_DEVICE(0x0cf3, 0xe007), .driver_info = BTUSB_QCA_ROME |
 262                                                      BTUSB_WIDEBAND_SPEECH },
 263         { USB_DEVICE(0x0cf3, 0xe009), .driver_info = BTUSB_QCA_ROME |
 264                                                      BTUSB_WIDEBAND_SPEECH },
 265         { USB_DEVICE(0x0cf3, 0xe010), .driver_info = BTUSB_QCA_ROME |
 266                                                      BTUSB_WIDEBAND_SPEECH },
 267         { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME |
 268                                                      BTUSB_WIDEBAND_SPEECH },
 269         { USB_DEVICE(0x0cf3, 0xe301), .driver_info = BTUSB_QCA_ROME |
 270                                                      BTUSB_WIDEBAND_SPEECH },
 271         { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME |
 272                                                      BTUSB_WIDEBAND_SPEECH },
 273         { USB_DEVICE(0x0489, 0xe092), .driver_info = BTUSB_QCA_ROME |
 274                                                      BTUSB_WIDEBAND_SPEECH },
 275         { USB_DEVICE(0x0489, 0xe09f), .driver_info = BTUSB_QCA_ROME |
 276                                                      BTUSB_WIDEBAND_SPEECH },
 277         { USB_DEVICE(0x0489, 0xe0a2), .driver_info = BTUSB_QCA_ROME |
 278                                                      BTUSB_WIDEBAND_SPEECH },
 279         { USB_DEVICE(0x04ca, 0x3011), .driver_info = BTUSB_QCA_ROME |
 280                                                      BTUSB_WIDEBAND_SPEECH },
 281         { USB_DEVICE(0x04ca, 0x3015), .driver_info = BTUSB_QCA_ROME |
 282                                                      BTUSB_WIDEBAND_SPEECH },
 283         { USB_DEVICE(0x04ca, 0x3016), .driver_info = BTUSB_QCA_ROME |
 284                                                      BTUSB_WIDEBAND_SPEECH },
 285         { USB_DEVICE(0x04ca, 0x301a), .driver_info = BTUSB_QCA_ROME |
 286                                                      BTUSB_WIDEBAND_SPEECH },
 287         { USB_DEVICE(0x04ca, 0x3021), .driver_info = BTUSB_QCA_ROME |
 288                                                      BTUSB_WIDEBAND_SPEECH },
 289         { USB_DEVICE(0x13d3, 0x3491), .driver_info = BTUSB_QCA_ROME |
 290                                                      BTUSB_WIDEBAND_SPEECH },
 291         { USB_DEVICE(0x13d3, 0x3496), .driver_info = BTUSB_QCA_ROME |
 292                                                      BTUSB_WIDEBAND_SPEECH },
 293         { USB_DEVICE(0x13d3, 0x3501), .driver_info = BTUSB_QCA_ROME |
 294                                                      BTUSB_WIDEBAND_SPEECH },
 295
 296         /* QCA WCN6855 chipset */
 297         { USB_DEVICE(0x0cf3, 0xe600), .driver_info = BTUSB_QCA_WCN6855 |
 298                                                      BTUSB_WIDEBAND_SPEECH },
 299
 300         /* Broadcom BCM2035 */
 301         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 302         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 303         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 304
 305         /* Broadcom BCM2045 */
 306         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 307         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 308
 309         /* IBM/Lenovo ThinkPad with Broadcom chip */
 310         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 311         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 312
 313         /* HP laptop with Broadcom chip */
 314         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 315
 316         /* Dell laptop with Broadcom chip */
 317         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 318
 319         /* Dell Wireless 370 and 410 devices */
 320         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 321         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 322
 323         /* Belkin F8T012 and F8T013 devices */
 324         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 325         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 326
 327         /* Asus WL-BTD202 device */
 328         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 329
 330         /* Kensington Bluetooth USB adapter */
 331         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 332
 333         /* RTX Telecom based adapters with buggy SCO support */
 334         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 335         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 336
 337         /* CONWISE Technology based adapters with buggy SCO support */
 338         { USB_DEVICE(0x0e5e, 0x6622),
 339           .driver_info = BTUSB_BROKEN_ISOC | BTUSB_CW6622},
 340
 341         /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
 342         { USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE },
 343
 344         /* Digianswer devices */
 345         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 346         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 347
 348         /* CSR BlueCore Bluetooth Sniffer */
 349         { USB_DEVICE(0x0a12, 0x0002),
 350           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 351
 352         /* Frontline ComProbe Bluetooth Sniffer */
 353         { USB_DEVICE(0x16d3, 0x0002),
 354           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 355
 356         /* Marvell Bluetooth devices */
 357         { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
 358         { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
 359         { USB_DEVICE(0x1286, 0x204e), .driver_info = BTUSB_MARVELL },
 360
 361         /* Intel Bluetooth devices */
 362         { USB_DEVICE(0x8087, 0x0025), .driver_info = BTUSB_INTEL_NEW |
 363                                                      BTUSB_WIDEBAND_SPEECH |
 364                                                      BTUSB_VALID_LE_STATES },
 365         { USB_DEVICE(0x8087, 0x0026), .driver_info = BTUSB_INTEL_NEW |
 366                                                      BTUSB_WIDEBAND_SPEECH },
 367         { USB_DEVICE(0x8087, 0x0029), .driver_info = BTUSB_INTEL_NEW |
 368                                                      BTUSB_WIDEBAND_SPEECH },
 369         { USB_DEVICE(0x8087, 0x0032), .driver_info = BTUSB_INTEL_NEWGEN |
 370                                                      BTUSB_WIDEBAND_SPEECH},
 371         { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR },
 372         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 373         { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
 374         { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_NEW |
 375                                                      BTUSB_WIDEBAND_SPEECH },
 376         { USB_DEVICE(0x8087, 0x0aa7), .driver_info = BTUSB_INTEL |
 377                                                      BTUSB_WIDEBAND_SPEECH },
 378         { USB_DEVICE(0x8087, 0x0aaa), .driver_info = BTUSB_INTEL_NEW |
 379                                                      BTUSB_WIDEBAND_SPEECH |
 380                                                      BTUSB_VALID_LE_STATES },
 381
 382         /* Other Intel Bluetooth devices */
 383         { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01),
 384           .driver_info = BTUSB_IGNORE },
 385
 386         /* Realtek 8822CE Bluetooth devices */
 387         { USB_DEVICE(0x0bda, 0xb00c), .driver_info = BTUSB_REALTEK |
 388                                                      BTUSB_WIDEBAND_SPEECH },
 389
 390         /* Realtek 8852AE Bluetooth devices */
 391         { USB_DEVICE(0x0bda, 0xc852), .driver_info = BTUSB_REALTEK |
 392                                                      BTUSB_WIDEBAND_SPEECH },
 393
 394         /* Realtek Bluetooth devices */
 395         { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01),
 396           .driver_info = BTUSB_REALTEK },
 397
 398         /* MediaTek Bluetooth devices */
 399         { USB_VENDOR_AND_INTERFACE_INFO(0x0e8d, 0xe0, 0x01, 0x01),
 400           .driver_info = BTUSB_MEDIATEK },
 401
 402         /* Additional MediaTek MT7615E Bluetooth devices */
 403         { USB_DEVICE(0x13d3, 0x3560), .driver_info = BTUSB_MEDIATEK},
 404
 405         /* Additional Realtek 8723AE Bluetooth devices */
 406         { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK },
 407         { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK },
 408
 409         /* Additional Realtek 8723BE Bluetooth devices */
 410         { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK },
 411         { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK },
 412         { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
 413         { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
 414         { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },
 415         { USB_DEVICE(0x13d3, 0x3494), .driver_info = BTUSB_REALTEK },
 416
 417         /* Additional Realtek 8723BU Bluetooth devices */
 418         { USB_DEVICE(0x7392, 0xa611), .driver_info = BTUSB_REALTEK },
 419
 420         /* Additional Realtek 8723DE Bluetooth devices */
 421         { USB_DEVICE(0x0bda, 0xb009), .driver_info = BTUSB_REALTEK },
 422         { USB_DEVICE(0x2ff8, 0xb011), .driver_info = BTUSB_REALTEK },
 423
 424         /* Additional Realtek 8821AE Bluetooth devices */
 425         { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
 426         { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },
 427         { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK },
 428         { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK },
 429         { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK },
 430
 431         /* Additional Realtek 8822BE Bluetooth devices */
 432         { USB_DEVICE(0x13d3, 0x3526), .driver_info = BTUSB_REALTEK },
 433         { USB_DEVICE(0x0b05, 0x185c), .driver_info = BTUSB_REALTEK },
 434
 435         /* Additional Realtek 8822CE Bluetooth devices */
 436         { USB_DEVICE(0x04ca, 0x4005), .driver_info = BTUSB_REALTEK |
 437                                                      BTUSB_WIDEBAND_SPEECH },
 438         { USB_DEVICE(0x04c5, 0x161f), .driver_info = BTUSB_REALTEK |
 439                                                      BTUSB_WIDEBAND_SPEECH },
 440         { USB_DEVICE(0x0b05, 0x18ef), .driver_info = BTUSB_REALTEK |
 441                                                      BTUSB_WIDEBAND_SPEECH },
 442         { USB_DEVICE(0x13d3, 0x3548), .driver_info = BTUSB_REALTEK |
 443                                                      BTUSB_WIDEBAND_SPEECH },
 444         { USB_DEVICE(0x13d3, 0x3549), .driver_info = BTUSB_REALTEK |
 445                                                      BTUSB_WIDEBAND_SPEECH },
 446         { USB_DEVICE(0x13d3, 0x3553), .driver_info = BTUSB_REALTEK |
 447                                                      BTUSB_WIDEBAND_SPEECH },
 448         { USB_DEVICE(0x13d3, 0x3555), .driver_info = BTUSB_REALTEK |
 449                                                      BTUSB_WIDEBAND_SPEECH },
 450         { USB_DEVICE(0x2ff8, 0x3051), .driver_info = BTUSB_REALTEK |
 451                                                      BTUSB_WIDEBAND_SPEECH },
 452         { USB_DEVICE(0x1358, 0xc123), .driver_info = BTUSB_REALTEK |
 453                                                      BTUSB_WIDEBAND_SPEECH },
 454         { USB_DEVICE(0x0bda, 0xc123), .driver_info = BTUSB_REALTEK |
 455                                                      BTUSB_WIDEBAND_SPEECH },
 456
 457         /* Silicon Wave based devices */
 458         { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE },
 459
 460         { }     /* Terminating entry */
 461 };
 462
 463 /* The Bluetooth USB module build into some devices needs to be reset on resume,
 464  * this is a problem with the platform (likely shutting off all power) not with
 465  * the module itself. So we use a DMI list to match known broken platforms.
 466  */
 467 static const struct dmi_system_id btusb_needs_reset_resume_table[] = {
 468         {
 469                 /* Dell OptiPlex 3060 (QCA ROME device 0cf3:e007) */
 470                 .matches = {
 471                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 472                         DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 3060"),
 473                 },
 474         },
 475         {
 476                 /* Dell XPS 9360 (QCA ROME device 0cf3:e300) */
 477                 .matches = {
 478                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 479                         DMI_MATCH(DMI_PRODUCT_NAME, "XPS 13 9360"),
 480                 },
 481         },
 482         {
 483                 /* Dell Inspiron 5565 (QCA ROME device 0cf3:e009) */
 484                 .matches = {
 485                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 486                         DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5565"),
 487                 },
 488         },
 489         {}
 490 };
 491
 492 #define BTUSB_MAX_ISOC_FRAMES   10
 493
 494 #define BTUSB_INTR_RUNNING      0
 495 #define BTUSB_BULK_RUNNING      1
 496 #define BTUSB_ISOC_RUNNING      2
 497 #define BTUSB_SUSPENDING        3
 498 #define BTUSB_DID_ISO_RESUME    4
 499 #define BTUSB_BOOTLOADER        5
 500 #define BTUSB_DOWNLOADING       6
 501 #define BTUSB_FIRMWARE_LOADED   7
 502 #define BTUSB_FIRMWARE_FAILED   8
 503 #define BTUSB_BOOTING           9
 504 #define BTUSB_DIAG_RUNNING      10
 505 #define BTUSB_OOB_WAKE_ENABLED  11
 506 #define BTUSB_HW_RESET_ACTIVE   12
 507 #define BTUSB_TX_WAIT_VND_EVT   13
 508 #define BTUSB_WAKEUP_DISABLE    14
 509 #define BTUSB_USE_ALT1_FOR_WBS  15
 510
 511 struct btusb_data {
 512         struct hci_dev       *hdev;
 513         struct usb_device    *udev;
 514         struct usb_interface *intf;
 515         struct usb_interface *isoc;
 516         struct usb_interface *diag;
 517         unsigned isoc_ifnum;
 518
 519         unsigned long flags;
 520
 521         struct work_struct work;
 522         struct work_struct waker;
 523
 524         struct usb_anchor deferred;
 525         struct usb_anchor tx_anchor;
 526         int tx_in_flight;
 527         spinlock_t txlock;
 528
 529         struct usb_anchor intr_anchor;
 530         struct usb_anchor bulk_anchor;
 531         struct usb_anchor isoc_anchor;
 532         struct usb_anchor diag_anchor;
 533         struct usb_anchor ctrl_anchor;
 534         spinlock_t rxlock;
 535
 536         struct sk_buff *evt_skb;
 537         struct sk_buff *acl_skb;
 538         struct sk_buff *sco_skb;
 539
 540         struct usb_endpoint_descriptor *intr_ep;
 541         struct usb_endpoint_descriptor *bulk_tx_ep;
 542         struct usb_endpoint_descriptor *bulk_rx_ep;
 543         struct usb_endpoint_descriptor *isoc_tx_ep;
 544         struct usb_endpoint_descriptor *isoc_rx_ep;
 545         struct usb_endpoint_descriptor *diag_tx_ep;
 546         struct usb_endpoint_descriptor *diag_rx_ep;
 547
 548         struct gpio_desc *reset_gpio;
 549
 550         __u8 cmdreq_type;
 551         __u8 cmdreq;
 552
 553         unsigned int sco_num;
 554         unsigned int air_mode;
 555         bool usb_alt6_packet_flow;
 556         int isoc_altsetting;
 557         int suspend_count;
 558
 559         int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
 560         int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
 561
 562         int (*setup_on_usb)(struct hci_dev *hdev);
 563
 564         int oob_wake_irq;   /* irq for out-of-band wake-on-bt */
 565         unsigned cmd_timeout_cnt;
 566 };
 567
 568 static void btusb_intel_cmd_timeout(struct hci_dev *hdev)
 569 {
 570         struct btusb_data *data = hci_get_drvdata(hdev);
 571         struct gpio_desc *reset_gpio = data->reset_gpio;
 572
 573         if (++data->cmd_timeout_cnt < 5)
 574                 return;
 575
 576         if (!reset_gpio) {
 577                 bt_dev_err(hdev, "No way to reset. Ignoring and continuing");
 578                 return;
 579         }
 580
 581         /*
 582          * Toggle the hard reset line if the platform provides one. The reset
 583          * is going to yank the device off the USB and then replug. So doing
 584          * once is enough. The cleanup is handled correctly on the way out
 585          * (standard USB disconnect), and the new device is detected cleanly
 586          * and bound to the driver again like it should be.
 587          */
 588         if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
 589                 bt_dev_err(hdev, "last reset failed? Not resetting again");
 590                 return;
 591         }
 592
 593         bt_dev_err(hdev, "Initiating HW reset via gpio");
 594         gpiod_set_value_cansleep(reset_gpio, 1);
 595         msleep(100);
 596         gpiod_set_value_cansleep(reset_gpio, 0);
 597 }
 598
 599 static void btusb_rtl_cmd_timeout(struct hci_dev *hdev)
 600 {
 601         struct btusb_data *data = hci_get_drvdata(hdev);
 602         struct gpio_desc *reset_gpio = data->reset_gpio;
 603
 604         if (++data->cmd_timeout_cnt < 5)
 605                 return;
 606
 607         if (!reset_gpio) {
 608                 bt_dev_err(hdev, "No gpio to reset Realtek device, ignoring");
 609                 return;
 610         }
 611
 612         /* Toggle the hard reset line. The Realtek device is going to
 613          * yank itself off the USB and then replug. The cleanup is handled
 614          * correctly on the way out (standard USB disconnect), and the new
 615          * device is detected cleanly and bound to the driver again like
 616          * it should be.
 617          */
 618         if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
 619                 bt_dev_err(hdev, "last reset failed? Not resetting again");
 620                 return;
 621         }
 622
 623         bt_dev_err(hdev, "Reset Realtek device via gpio");
 624         gpiod_set_value_cansleep(reset_gpio, 1);
 625         msleep(200);
 626         gpiod_set_value_cansleep(reset_gpio, 0);
 627 }
 628
 629 static void btusb_qca_cmd_timeout(struct hci_dev *hdev)
 630 {
 631         struct btusb_data *data = hci_get_drvdata(hdev);
 632         int err;
 633
 634         if (++data->cmd_timeout_cnt < 5)
 635                 return;
 636
 637         bt_dev_err(hdev, "Multiple cmd timeouts seen. Resetting usb device.");
 638         /* This is not an unbalanced PM reference since the device will reset */
 639         err = usb_autopm_get_interface(data->intf);
 640         if (!err)
 641                 usb_queue_reset_device(data->intf);
 642         else
 643                 bt_dev_err(hdev, "Failed usb_autopm_get_interface with %d", err);
 644 }
 645
 646 static inline void btusb_free_frags(struct btusb_data *data)
 647 {
 648         unsigned long flags;
 649
 650         spin_lock_irqsave(&data->rxlock, flags);
 651
 652         kfree_skb(data->evt_skb);
 653         data->evt_skb = NULL;
 654
 655         kfree_skb(data->acl_skb);
 656         data->acl_skb = NULL;
 657
 658         kfree_skb(data->sco_skb);
 659         data->sco_skb = NULL;
 660
 661         spin_unlock_irqrestore(&data->rxlock, flags);
 662 }
 663
 664 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
 665 {
 666         struct sk_buff *skb;
 667         unsigned long flags;
 668         int err = 0;
 669
 670         spin_lock_irqsave(&data->rxlock, flags);
 671         skb = data->evt_skb;
 672
 673         while (count) {
 674                 int len;
 675
 676                 if (!skb) {
 677                         skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
 678                         if (!skb) {
 679                                 err = -ENOMEM;
 680                                 break;
 681                         }
 682
 683                         hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
 684                         hci_skb_expect(skb) = HCI_EVENT_HDR_SIZE;
 685                 }
 686
 687                 len = min_t(uint, hci_skb_expect(skb), count);
 688                 skb_put_data(skb, buffer, len);
 689
 690                 count -= len;
 691                 buffer += len;
 692                 hci_skb_expect(skb) -= len;
 693
 694                 if (skb->len == HCI_EVENT_HDR_SIZE) {
 695                         /* Complete event header */
 696                         hci_skb_expect(skb) = hci_event_hdr(skb)->plen;
 697
 698                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 699                                 kfree_skb(skb);
 700                                 skb = NULL;
 701
 702                                 err = -EILSEQ;
 703                                 break;
 704                         }
 705                 }
 706
 707                 if (!hci_skb_expect(skb)) {
 708                         /* Complete frame */
 709                         data->recv_event(data->hdev, skb);
 710                         skb = NULL;
 711                 }
 712         }
 713
 714         data->evt_skb = skb;
 715         spin_unlock_irqrestore(&data->rxlock, flags);
 716
 717         return err;
 718 }
 719
 720 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
 721 {
 722         struct sk_buff *skb;
 723         unsigned long flags;
 724         int err = 0;
 725
 726         spin_lock_irqsave(&data->rxlock, flags);
 727         skb = data->acl_skb;
 728
 729         while (count) {
 730                 int len;
 731
 732                 if (!skb) {
 733                         skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
 734                         if (!skb) {
 735                                 err = -ENOMEM;
 736                                 break;
 737                         }
 738
 739                         hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT;
 740                         hci_skb_expect(skb) = HCI_ACL_HDR_SIZE;
 741                 }
 742
 743                 len = min_t(uint, hci_skb_expect(skb), count);
 744                 skb_put_data(skb, buffer, len);
 745
 746                 count -= len;
 747                 buffer += len;
 748                 hci_skb_expect(skb) -= len;
 749
 750                 if (skb->len == HCI_ACL_HDR_SIZE) {
 751                         __le16 dlen = hci_acl_hdr(skb)->dlen;
 752
 753                         /* Complete ACL header */
 754                         hci_skb_expect(skb) = __le16_to_cpu(dlen);
 755
 756                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 757                                 kfree_skb(skb);
 758                                 skb = NULL;
 759
 760                                 err = -EILSEQ;
 761                                 break;
 762                         }
 763                 }
 764
 765                 if (!hci_skb_expect(skb)) {
 766                         /* Complete frame */
 767                         hci_recv_frame(data->hdev, skb);
 768                         skb = NULL;
 769                 }
 770         }
 771
 772         data->acl_skb = skb;
 773         spin_unlock_irqrestore(&data->rxlock, flags);
 774
 775         return err;
 776 }
 777
 778 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
 779 {
 780         struct sk_buff *skb;
 781         unsigned long flags;
 782         int err = 0;
 783
 784         spin_lock_irqsave(&data->rxlock, flags);
 785         skb = data->sco_skb;
 786
 787         while (count) {
 788                 int len;
 789
 790                 if (!skb) {
 791                         skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
 792                         if (!skb) {
 793                                 err = -ENOMEM;
 794                                 break;
 795                         }
 796
 797                         hci_skb_pkt_type(skb) = HCI_SCODATA_PKT;
 798                         hci_skb_expect(skb) = HCI_SCO_HDR_SIZE;
 799                 }
 800
 801                 len = min_t(uint, hci_skb_expect(skb), count);
 802                 skb_put_data(skb, buffer, len);
 803
 804                 count -= len;
 805                 buffer += len;
 806                 hci_skb_expect(skb) -= len;
 807
 808                 if (skb->len == HCI_SCO_HDR_SIZE) {
 809                         /* Complete SCO header */
 810                         hci_skb_expect(skb) = hci_sco_hdr(skb)->dlen;
 811
 812                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 813                                 kfree_skb(skb);
 814                                 skb = NULL;
 815
 816                                 err = -EILSEQ;
 817                                 break;
 818                         }
 819                 }
 820
 821                 if (!hci_skb_expect(skb)) {
 822                         /* Complete frame */
 823                         hci_recv_frame(data->hdev, skb);
 824                         skb = NULL;
 825                 }
 826         }
 827
 828         data->sco_skb = skb;
 829         spin_unlock_irqrestore(&data->rxlock, flags);
 830
 831         return err;
 832 }
 833
 834 static void btusb_intr_complete(struct urb *urb)
 835 {
 836         struct hci_dev *hdev = urb->context;
 837         struct btusb_data *data = hci_get_drvdata(hdev);
 838         int err;
 839
 840         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 841                urb->actual_length);
 842
 843         if (!test_bit(HCI_RUNNING, &hdev->flags))
 844                 return;
 845
 846         if (urb->status == 0) {
 847                 hdev->stat.byte_rx += urb->actual_length;
 848
 849                 if (btusb_recv_intr(data, urb->transfer_buffer,
 850                                     urb->actual_length) < 0) {
 851                         bt_dev_err(hdev, "corrupted event packet");
 852                         hdev->stat.err_rx++;
 853                 }
 854         } else if (urb->status == -ENOENT) {
 855                 /* Avoid suspend failed when usb_kill_urb */
 856                 return;
 857         }
 858
 859         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 860                 return;
 861
 862         usb_mark_last_busy(data->udev);
 863         usb_anchor_urb(urb, &data->intr_anchor);
 864
 865         err = usb_submit_urb(urb, GFP_ATOMIC);
 866         if (err < 0) {
 867                 /* -EPERM: urb is being killed;
 868                  * -ENODEV: device got disconnected
 869                  */
 870                 if (err != -EPERM && err != -ENODEV)
 871                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
 872                                    urb, -err);
 873                 usb_unanchor_urb(urb);
 874         }
 875 }
 876
 877 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 878 {
 879         struct btusb_data *data = hci_get_drvdata(hdev);
 880         struct urb *urb;
 881         unsigned char *buf;
 882         unsigned int pipe;
 883         int err, size;
 884
 885         BT_DBG("%s", hdev->name);
 886
 887         if (!data->intr_ep)
 888                 return -ENODEV;
 889
 890         urb = usb_alloc_urb(0, mem_flags);
 891         if (!urb)
 892                 return -ENOMEM;
 893
 894         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 895
 896         buf = kmalloc(size, mem_flags);
 897         if (!buf) {
 898                 usb_free_urb(urb);
 899                 return -ENOMEM;
 900         }
 901
 902         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 903
 904         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 905                          btusb_intr_complete, hdev, data->intr_ep->bInterval);
 906
 907         urb->transfer_flags |= URB_FREE_BUFFER;
 908
 909         usb_anchor_urb(urb, &data->intr_anchor);
 910
 911         err = usb_submit_urb(urb, mem_flags);
 912         if (err < 0) {
 913                 if (err != -EPERM && err != -ENODEV)
 914                         bt_dev_err(hdev, "urb %p submission failed (%d)",
 915                                    urb, -err);
 916                 usb_unanchor_urb(urb);
 917         }
 918
 919         usb_free_urb(urb);
 920
 921         return err;
 922 }
 923
 924 static void btusb_bulk_complete(struct urb *urb)
 925 {
 926         struct hci_dev *hdev = urb->context;
 927         struct btusb_data *data = hci_get_drvdata(hdev);
 928         int err;
 929
 930         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 931                urb->actual_length);
 932
 933         if (!test_bit(HCI_RUNNING, &hdev->flags))
 934                 return;
 935
 936         if (urb->status == 0) {
 937                 hdev->stat.byte_rx += urb->actual_length;
 938
 939                 if (data->recv_bulk(data, urb->transfer_buffer,
 940                                     urb->actual_length) < 0) {
 941                         bt_dev_err(hdev, "corrupted ACL packet");
 942                         hdev->stat.err_rx++;
 943                 }
 944         } else if (urb->status == -ENOENT) {
 945                 /* Avoid suspend failed when usb_kill_urb */
 946                 return;
 947         }
 948
 949         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 950                 return;
 951
 952         usb_anchor_urb(urb, &data->bulk_anchor);
 953         usb_mark_last_busy(data->udev);
 954
 955         err = usb_submit_urb(urb, GFP_ATOMIC);
 956         if (err < 0) {
 957                 /* -EPERM: urb is being killed;
 958                  * -ENODEV: device got disconnected
 959                  */
 960                 if (err != -EPERM && err != -ENODEV)
 961                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
 962                                    urb, -err);
 963                 usb_unanchor_urb(urb);
 964         }
 965 }
 966
 967 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 968 {
 969         struct btusb_data *data = hci_get_drvdata(hdev);
 970         struct urb *urb;
 971         unsigned char *buf;
 972         unsigned int pipe;
 973         int err, size = HCI_MAX_FRAME_SIZE;
 974
 975         BT_DBG("%s", hdev->name);
 976
 977         if (!data->bulk_rx_ep)
 978                 return -ENODEV;
 979
 980         urb = usb_alloc_urb(0, mem_flags);
 981         if (!urb)
 982                 return -ENOMEM;
 983
 984         buf = kmalloc(size, mem_flags);
 985         if (!buf) {
 986                 usb_free_urb(urb);
 987                 return -ENOMEM;
 988         }
 989
 990         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 991
 992         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
 993                           btusb_bulk_complete, hdev);
 994
 995         urb->transfer_flags |= URB_FREE_BUFFER;
 996
 997         usb_mark_last_busy(data->udev);
 998         usb_anchor_urb(urb, &data->bulk_anchor);
 999
1000         err = usb_submit_urb(urb, mem_flags);
1001         if (err < 0) {
1002                 if (err != -EPERM && err != -ENODEV)
1003                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1004                                    urb, -err);
1005                 usb_unanchor_urb(urb);
1006         }
1007
1008         usb_free_urb(urb);
1009
1010         return err;
1011 }
1012
1013 static void btusb_isoc_complete(struct urb *urb)
1014 {
1015         struct hci_dev *hdev = urb->context;
1016         struct btusb_data *data = hci_get_drvdata(hdev);
1017         int i, err;
1018
1019         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1020                urb->actual_length);
1021
1022         if (!test_bit(HCI_RUNNING, &hdev->flags))
1023                 return;
1024
1025         if (urb->status == 0) {
1026                 for (i = 0; i < urb->number_of_packets; i++) {
1027                         unsigned int offset = urb->iso_frame_desc[i].offset;
1028                         unsigned int length = urb->iso_frame_desc[i].actual_length;
1029
1030                         if (urb->iso_frame_desc[i].status)
1031                                 continue;
1032
1033                         hdev->stat.byte_rx += length;
1034
1035                         if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
1036                                             length) < 0) {
1037                                 bt_dev_err(hdev, "corrupted SCO packet");
1038                                 hdev->stat.err_rx++;
1039                         }
1040                 }
1041         } else if (urb->status == -ENOENT) {
1042                 /* Avoid suspend failed when usb_kill_urb */
1043                 return;
1044         }
1045
1046         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
1047                 return;
1048
1049         usb_anchor_urb(urb, &data->isoc_anchor);
1050
1051         err = usb_submit_urb(urb, GFP_ATOMIC);
1052         if (err < 0) {
1053                 /* -EPERM: urb is being killed;
1054                  * -ENODEV: device got disconnected
1055                  */
1056                 if (err != -EPERM && err != -ENODEV)
1057                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1058                                    urb, -err);
1059                 usb_unanchor_urb(urb);
1060         }
1061 }
1062
1063 static inline void __fill_isoc_descriptor_msbc(struct urb *urb, int len,
1064                                                int mtu, struct btusb_data *data)
1065 {
1066         int i, offset = 0;
1067         unsigned int interval;
1068
1069         BT_DBG("len %d mtu %d", len, mtu);
1070
1071         /* For mSBC ALT 6 setting the host will send the packet at continuous
1072          * flow. As per core spec 5, vol 4, part B, table 2.1. For ALT setting
1073          * 6 the HCI PACKET INTERVAL should be 7.5ms for every usb packets.
1074          * To maintain the rate we send 63bytes of usb packets alternatively for
1075          * 7ms and 8ms to maintain the rate as 7.5ms.
1076          */
1077         if (data->usb_alt6_packet_flow) {
1078                 interval = 7;
1079                 data->usb_alt6_packet_flow = false;
1080         } else {
1081                 interval = 6;
1082                 data->usb_alt6_packet_flow = true;
1083         }
1084
1085         for (i = 0; i < interval; i++) {
1086                 urb->iso_frame_desc[i].offset = offset;
1087                 urb->iso_frame_desc[i].length = offset;
1088         }
1089
1090         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
1091                 urb->iso_frame_desc[i].offset = offset;
1092                 urb->iso_frame_desc[i].length = len;
1093                 i++;
1094         }
1095
1096         urb->number_of_packets = i;
1097 }
1098
1099 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
1100 {
1101         int i, offset = 0;
1102
1103         BT_DBG("len %d mtu %d", len, mtu);
1104
1105         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
1106                                         i++, offset += mtu, len -= mtu) {
1107                 urb->iso_frame_desc[i].offset = offset;
1108                 urb->iso_frame_desc[i].length = mtu;
1109         }
1110
1111         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
1112                 urb->iso_frame_desc[i].offset = offset;
1113                 urb->iso_frame_desc[i].length = len;
1114                 i++;
1115         }
1116
1117         urb->number_of_packets = i;
1118 }
1119
1120 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
1121 {
1122         struct btusb_data *data = hci_get_drvdata(hdev);
1123         struct urb *urb;
1124         unsigned char *buf;
1125         unsigned int pipe;
1126         int err, size;
1127
1128         BT_DBG("%s", hdev->name);
1129
1130         if (!data->isoc_rx_ep)
1131                 return -ENODEV;
1132
1133         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
1134         if (!urb)
1135                 return -ENOMEM;
1136
1137         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
1138                                                 BTUSB_MAX_ISOC_FRAMES;
1139
1140         buf = kmalloc(size, mem_flags);
1141         if (!buf) {
1142                 usb_free_urb(urb);
1143                 return -ENOMEM;
1144         }
1145
1146         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
1147
1148         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
1149                          hdev, data->isoc_rx_ep->bInterval);
1150
1151         urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
1152
1153         __fill_isoc_descriptor(urb, size,
1154                                le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
1155
1156         usb_anchor_urb(urb, &data->isoc_anchor);
1157
1158         err = usb_submit_urb(urb, mem_flags);
1159         if (err < 0) {
1160                 if (err != -EPERM && err != -ENODEV)
1161                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1162                                    urb, -err);
1163                 usb_unanchor_urb(urb);
1164         }
1165
1166         usb_free_urb(urb);
1167
1168         return err;
1169 }
1170
1171 static void btusb_diag_complete(struct urb *urb)
1172 {
1173         struct hci_dev *hdev = urb->context;
1174         struct btusb_data *data = hci_get_drvdata(hdev);
1175         int err;
1176
1177         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1178                urb->actual_length);
1179
1180         if (urb->status == 0) {
1181                 struct sk_buff *skb;
1182
1183                 skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC);
1184                 if (skb) {
1185                         skb_put_data(skb, urb->transfer_buffer,
1186                                      urb->actual_length);
1187                         hci_recv_diag(hdev, skb);
1188                 }
1189         } else if (urb->status == -ENOENT) {
1190                 /* Avoid suspend failed when usb_kill_urb */
1191                 return;
1192         }
1193
1194         if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags))
1195                 return;
1196
1197         usb_anchor_urb(urb, &data->diag_anchor);
1198         usb_mark_last_busy(data->udev);
1199
1200         err = usb_submit_urb(urb, GFP_ATOMIC);
1201         if (err < 0) {
1202                 /* -EPERM: urb is being killed;
1203                  * -ENODEV: device got disconnected
1204                  */
1205                 if (err != -EPERM && err != -ENODEV)
1206                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1207                                    urb, -err);
1208                 usb_unanchor_urb(urb);
1209         }
1210 }
1211
1212 static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags)
1213 {
1214         struct btusb_data *data = hci_get_drvdata(hdev);
1215         struct urb *urb;
1216         unsigned char *buf;
1217         unsigned int pipe;
1218         int err, size = HCI_MAX_FRAME_SIZE;
1219
1220         BT_DBG("%s", hdev->name);
1221
1222         if (!data->diag_rx_ep)
1223                 return -ENODEV;
1224
1225         urb = usb_alloc_urb(0, mem_flags);
1226         if (!urb)
1227                 return -ENOMEM;
1228
1229         buf = kmalloc(size, mem_flags);
1230         if (!buf) {
1231                 usb_free_urb(urb);
1232                 return -ENOMEM;
1233         }
1234
1235         pipe = usb_rcvbulkpipe(data->udev, data->diag_rx_ep->bEndpointAddress);
1236
1237         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
1238                           btusb_diag_complete, hdev);
1239
1240         urb->transfer_flags |= URB_FREE_BUFFER;
1241
1242         usb_mark_last_busy(data->udev);
1243         usb_anchor_urb(urb, &data->diag_anchor);
1244
1245         err = usb_submit_urb(urb, mem_flags);
1246         if (err < 0) {
1247                 if (err != -EPERM && err != -ENODEV)
1248                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1249                                    urb, -err);
1250                 usb_unanchor_urb(urb);
1251         }
1252
1253         usb_free_urb(urb);
1254
1255         return err;
1256 }
1257
1258 static void btusb_tx_complete(struct urb *urb)
1259 {
1260         struct sk_buff *skb = urb->context;
1261         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1262         struct btusb_data *data = hci_get_drvdata(hdev);
1263         unsigned long flags;
1264
1265         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1266                urb->actual_length);
1267
1268         if (!test_bit(HCI_RUNNING, &hdev->flags))
1269                 goto done;
1270
1271         if (!urb->status)
1272                 hdev->stat.byte_tx += urb->transfer_buffer_length;
1273         else
1274                 hdev->stat.err_tx++;
1275
1276 done:
1277         spin_lock_irqsave(&data->txlock, flags);
1278         data->tx_in_flight--;
1279         spin_unlock_irqrestore(&data->txlock, flags);
1280
1281         kfree(urb->setup_packet);
1282
1283         kfree_skb(skb);
1284 }
1285
1286 static void btusb_isoc_tx_complete(struct urb *urb)
1287 {
1288         struct sk_buff *skb = urb->context;
1289         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1290
1291         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1292                urb->actual_length);
1293
1294         if (!test_bit(HCI_RUNNING, &hdev->flags))
1295                 goto done;
1296
1297         if (!urb->status)
1298                 hdev->stat.byte_tx += urb->transfer_buffer_length;
1299         else
1300                 hdev->stat.err_tx++;
1301
1302 done:
1303         kfree(urb->setup_packet);
1304
1305         kfree_skb(skb);
1306 }
1307
1308 static int btusb_open(struct hci_dev *hdev)
1309 {
1310         struct btusb_data *data = hci_get_drvdata(hdev);
1311         int err;
1312
1313         BT_DBG("%s", hdev->name);
1314
1315         err = usb_autopm_get_interface(data->intf);
1316         if (err < 0)
1317                 return err;
1318
1319         /* Patching USB firmware files prior to starting any URBs of HCI path
1320          * It is more safe to use USB bulk channel for downloading USB patch
1321          */
1322         if (data->setup_on_usb) {
1323                 err = data->setup_on_usb(hdev);
1324                 if (err < 0)
1325                         goto setup_fail;
1326         }
1327
1328         data->intf->needs_remote_wakeup = 1;
1329
1330         /* Disable device remote wakeup when host is suspended
1331          * For Realtek chips, global suspend without
1332          * SET_FEATURE (DEVICE_REMOTE_WAKEUP) can save more power in device.
1333          */
1334         if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags))
1335                 device_wakeup_disable(&data->udev->dev);
1336
1337         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
1338                 goto done;
1339
1340         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
1341         if (err < 0)
1342                 goto failed;
1343
1344         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1345         if (err < 0) {
1346                 usb_kill_anchored_urbs(&data->intr_anchor);
1347                 goto failed;
1348         }
1349
1350         set_bit(BTUSB_BULK_RUNNING, &data->flags);
1351         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1352
1353         if (data->diag) {
1354                 if (!btusb_submit_diag_urb(hdev, GFP_KERNEL))
1355                         set_bit(BTUSB_DIAG_RUNNING, &data->flags);
1356         }
1357
1358 done:
1359         usb_autopm_put_interface(data->intf);
1360         return 0;
1361
1362 failed:
1363         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1364 setup_fail:
1365         usb_autopm_put_interface(data->intf);
1366         return err;
1367 }
1368
1369 static void btusb_stop_traffic(struct btusb_data *data)
1370 {
1371         usb_kill_anchored_urbs(&data->intr_anchor);
1372         usb_kill_anchored_urbs(&data->bulk_anchor);
1373         usb_kill_anchored_urbs(&data->isoc_anchor);
1374         usb_kill_anchored_urbs(&data->diag_anchor);
1375         usb_kill_anchored_urbs(&data->ctrl_anchor);
1376 }
1377
1378 static int btusb_close(struct hci_dev *hdev)
1379 {
1380         struct btusb_data *data = hci_get_drvdata(hdev);
1381         int err;
1382
1383         BT_DBG("%s", hdev->name);
1384
1385         cancel_work_sync(&data->work);
1386         cancel_work_sync(&data->waker);
1387
1388         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1389         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1390         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1391         clear_bit(BTUSB_DIAG_RUNNING, &data->flags);
1392
1393         btusb_stop_traffic(data);
1394         btusb_free_frags(data);
1395
1396         err = usb_autopm_get_interface(data->intf);
1397         if (err < 0)
1398                 goto failed;
1399
1400         data->intf->needs_remote_wakeup = 0;
1401
1402         /* Enable remote wake up for auto-suspend */
1403         if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags))
1404                 data->intf->needs_remote_wakeup = 1;
1405
1406         usb_autopm_put_interface(data->intf);
1407
1408 failed:
1409         usb_scuttle_anchored_urbs(&data->deferred);
1410         return 0;
1411 }
1412
1413 static int btusb_flush(struct hci_dev *hdev)
1414 {
1415         struct btusb_data *data = hci_get_drvdata(hdev);
1416
1417         BT_DBG("%s", hdev->name);
1418
1419         usb_kill_anchored_urbs(&data->tx_anchor);
1420         btusb_free_frags(data);
1421
1422         return 0;
1423 }
1424
1425 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
1426 {
1427         struct btusb_data *data = hci_get_drvdata(hdev);
1428         struct usb_ctrlrequest *dr;
1429         struct urb *urb;
1430         unsigned int pipe;
1431
1432         urb = usb_alloc_urb(0, GFP_KERNEL);
1433         if (!urb)
1434                 return ERR_PTR(-ENOMEM);
1435
1436         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
1437         if (!dr) {
1438                 usb_free_urb(urb);
1439                 return ERR_PTR(-ENOMEM);
1440         }
1441
1442         dr->bRequestType = data->cmdreq_type;
1443         dr->bRequest     = data->cmdreq;
1444         dr->wIndex       = 0;
1445         dr->wValue       = 0;
1446         dr->wLength      = __cpu_to_le16(skb->len);
1447
1448         pipe = usb_sndctrlpipe(data->udev, 0x00);
1449
1450         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
1451                              skb->data, skb->len, btusb_tx_complete, skb);
1452
1453         skb->dev = (void *)hdev;
1454
1455         return urb;
1456 }
1457
1458 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
1459 {
1460         struct btusb_data *data = hci_get_drvdata(hdev);
1461         struct urb *urb;
1462         unsigned int pipe;
1463
1464         if (!data->bulk_tx_ep)
1465                 return ERR_PTR(-ENODEV);
1466
1467         urb = usb_alloc_urb(0, GFP_KERNEL);
1468         if (!urb)
1469                 return ERR_PTR(-ENOMEM);
1470
1471         pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1472
1473         usb_fill_bulk_urb(urb, data->udev, pipe,
1474                           skb->data, skb->len, btusb_tx_complete, skb);
1475
1476         skb->dev = (void *)hdev;
1477
1478         return urb;
1479 }
1480
1481 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1482 {
1483         struct btusb_data *data = hci_get_drvdata(hdev);
1484         struct urb *urb;
1485         unsigned int pipe;
1486
1487         if (!data->isoc_tx_ep)
1488                 return ERR_PTR(-ENODEV);
1489
1490         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1491         if (!urb)
1492                 return ERR_PTR(-ENOMEM);
1493
1494         pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1495
1496         usb_fill_int_urb(urb, data->udev, pipe,
1497                          skb->data, skb->len, btusb_isoc_tx_complete,
1498                          skb, data->isoc_tx_ep->bInterval);
1499
1500         urb->transfer_flags  = URB_ISO_ASAP;
1501
1502         if (data->isoc_altsetting == 6)
1503                 __fill_isoc_descriptor_msbc(urb, skb->len,
1504                                             le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize),
1505                                             data);
1506         else
1507                 __fill_isoc_descriptor(urb, skb->len,
1508                                        le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1509         skb->dev = (void *)hdev;
1510
1511         return urb;
1512 }
1513
1514 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1515 {
1516         struct btusb_data *data = hci_get_drvdata(hdev);
1517         int err;
1518
1519         usb_anchor_urb(urb, &data->tx_anchor);
1520
1521         err = usb_submit_urb(urb, GFP_KERNEL);
1522         if (err < 0) {
1523                 if (err != -EPERM && err != -ENODEV)
1524                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1525                                    urb, -err);
1526                 kfree(urb->setup_packet);
1527                 usb_unanchor_urb(urb);
1528         } else {
1529                 usb_mark_last_busy(data->udev);
1530         }
1531
1532         usb_free_urb(urb);
1533         return err;
1534 }
1535
1536 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1537 {
1538         struct btusb_data *data = hci_get_drvdata(hdev);
1539         unsigned long flags;
1540         bool suspending;
1541
1542         spin_lock_irqsave(&data->txlock, flags);
1543         suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1544         if (!suspending)
1545                 data->tx_in_flight++;
1546         spin_unlock_irqrestore(&data->txlock, flags);
1547
1548         if (!suspending)
1549                 return submit_tx_urb(hdev, urb);
1550
1551         usb_anchor_urb(urb, &data->deferred);
1552         schedule_work(&data->waker);
1553
1554         usb_free_urb(urb);
1555         return 0;
1556 }
1557
1558 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1559 {
1560         struct urb *urb;
1561
1562         BT_DBG("%s", hdev->name);
1563
1564         switch (hci_skb_pkt_type(skb)) {
1565         case HCI_COMMAND_PKT:
1566                 urb = alloc_ctrl_urb(hdev, skb);
1567                 if (IS_ERR(urb))
1568                         return PTR_ERR(urb);
1569
1570                 hdev->stat.cmd_tx++;
1571                 return submit_or_queue_tx_urb(hdev, urb);
1572
1573         case HCI_ACLDATA_PKT:
1574                 urb = alloc_bulk_urb(hdev, skb);
1575                 if (IS_ERR(urb))
1576                         return PTR_ERR(urb);
1577
1578                 hdev->stat.acl_tx++;
1579                 return submit_or_queue_tx_urb(hdev, urb);
1580
1581         case HCI_SCODATA_PKT:
1582                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1583                         return -ENODEV;
1584
1585                 urb = alloc_isoc_urb(hdev, skb);
1586                 if (IS_ERR(urb))
1587                         return PTR_ERR(urb);
1588
1589                 hdev->stat.sco_tx++;
1590                 return submit_tx_urb(hdev, urb);
1591         }
1592
1593         return -EILSEQ;
1594 }
1595
1596 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1597 {
1598         struct btusb_data *data = hci_get_drvdata(hdev);
1599
1600         BT_DBG("%s evt %d", hdev->name, evt);
1601
1602         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1603                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1604                 data->air_mode = evt;
1605                 schedule_work(&data->work);
1606         }
1607 }
1608
1609 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1610 {
1611         struct btusb_data *data = hci_get_drvdata(hdev);
1612         struct usb_interface *intf = data->isoc;
1613         struct usb_endpoint_descriptor *ep_desc;
1614         int i, err;
1615
1616         if (!data->isoc)
1617                 return -ENODEV;
1618
1619         err = usb_set_interface(data->udev, data->isoc_ifnum, altsetting);
1620         if (err < 0) {
1621                 bt_dev_err(hdev, "setting interface failed (%d)", -err);
1622                 return err;
1623         }
1624
1625         data->isoc_altsetting = altsetting;
1626
1627         data->isoc_tx_ep = NULL;
1628         data->isoc_rx_ep = NULL;
1629
1630         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1631                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1632
1633                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1634                         data->isoc_tx_ep = ep_desc;
1635                         continue;
1636                 }
1637
1638                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1639                         data->isoc_rx_ep = ep_desc;
1640                         continue;
1641                 }
1642         }
1643
1644         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1645                 bt_dev_err(hdev, "invalid SCO descriptors");
1646                 return -ENODEV;
1647         }
1648
1649         return 0;
1650 }
1651
1652 static int btusb_switch_alt_setting(struct hci_dev *hdev, int new_alts)
1653 {
1654         struct btusb_data *data = hci_get_drvdata(hdev);
1655         int err;
1656
1657         if (data->isoc_altsetting != new_alts) {
1658                 unsigned long flags;
1659
1660                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1661                 usb_kill_anchored_urbs(&data->isoc_anchor);
1662
1663                 /* When isochronous alternate setting needs to be
1664                  * changed, because SCO connection has been added
1665                  * or removed, a packet fragment may be left in the
1666                  * reassembling state. This could lead to wrongly
1667                  * assembled fragments.
1668                  *
1669                  * Clear outstanding fragment when selecting a new
1670                  * alternate setting.
1671                  */
1672                 spin_lock_irqsave(&data->rxlock, flags);
1673                 kfree_skb(data->sco_skb);
1674                 data->sco_skb = NULL;
1675                 spin_unlock_irqrestore(&data->rxlock, flags);
1676
1677                 err = __set_isoc_interface(hdev, new_alts);
1678                 if (err < 0)
1679                         return err;
1680         }
1681
1682         if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1683                 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1684                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1685                 else
1686                         btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1687         }
1688
1689         return 0;
1690 }
1691
1692 static struct usb_host_interface *btusb_find_altsetting(struct btusb_data *data,
1693                                                         int alt)
1694 {
1695         struct usb_interface *intf = data->isoc;
1696         int i;
1697
1698         BT_DBG("Looking for Alt no :%d", alt);
1699
1700         if (!intf)
1701                 return NULL;
1702
1703         for (i = 0; i < intf->num_altsetting; i++) {
1704                 if (intf->altsetting[i].desc.bAlternateSetting == alt)
1705                         return &intf->altsetting[i];
1706         }
1707
1708         return NULL;
1709 }
1710
1711 static void btusb_work(struct work_struct *work)
1712 {
1713         struct btusb_data *data = container_of(work, struct btusb_data, work);
1714         struct hci_dev *hdev = data->hdev;
1715         int new_alts = 0;
1716         int err;
1717
1718         if (data->sco_num > 0) {
1719                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1720                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1721                         if (err < 0) {
1722                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1723                                 usb_kill_anchored_urbs(&data->isoc_anchor);
1724                                 return;
1725                         }
1726
1727                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1728                 }
1729
1730                 if (data->air_mode == HCI_NOTIFY_ENABLE_SCO_CVSD) {
1731                         if (hdev->voice_setting & 0x0020) {
1732                                 static const int alts[3] = { 2, 4, 5 };
1733
1734                                 new_alts = alts[data->sco_num - 1];
1735                         } else {
1736                                 new_alts = data->sco_num;
1737                         }
1738                 } else if (data->air_mode == HCI_NOTIFY_ENABLE_SCO_TRANSP) {
1739                         /* Check if Alt 6 is supported for Transparent audio */
1740                         if (btusb_find_altsetting(data, 6)) {
1741                                 data->usb_alt6_packet_flow = true;
1742                                 new_alts = 6;
1743                         } else if (test_bit(BTUSB_USE_ALT1_FOR_WBS, &data->flags)) {
1744                                 new_alts = 1;
1745                         } else {
1746                                 bt_dev_err(hdev, "Device does not support ALT setting 6");
1747                         }
1748                 }
1749
1750                 if (btusb_switch_alt_setting(hdev, new_alts) < 0)
1751                         bt_dev_err(hdev, "set USB alt:(%d) failed!", new_alts);
1752         } else {
1753                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1754                 usb_kill_anchored_urbs(&data->isoc_anchor);
1755
1756                 __set_isoc_interface(hdev, 0);
1757                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1758                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1759         }
1760 }
1761
1762 static void btusb_waker(struct work_struct *work)
1763 {
1764         struct btusb_data *data = container_of(work, struct btusb_data, waker);
1765         int err;
1766
1767         err = usb_autopm_get_interface(data->intf);
1768         if (err < 0)
1769                 return;
1770
1771         usb_autopm_put_interface(data->intf);
1772 }
1773
1774 static int btusb_setup_bcm92035(struct hci_dev *hdev)
1775 {
1776         struct sk_buff *skb;
1777         u8 val = 0x00;
1778
1779         BT_DBG("%s", hdev->name);
1780
1781         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1782         if (IS_ERR(skb))
1783                 bt_dev_err(hdev, "BCM92035 command failed (%ld)", PTR_ERR(skb));
1784         else
1785                 kfree_skb(skb);
1786
1787         return 0;
1788 }
1789
1790 static int btusb_setup_csr(struct hci_dev *hdev)
1791 {
1792         struct btusb_data *data = hci_get_drvdata(hdev);
1793         u16 bcdDevice = le16_to_cpu(data->udev->descriptor.bcdDevice);
1794         struct hci_rp_read_local_version *rp;
1795         struct sk_buff *skb;
1796         bool is_fake = false;
1797         int ret;
1798
1799         BT_DBG("%s", hdev->name);
1800
1801         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1802                              HCI_INIT_TIMEOUT);
1803         if (IS_ERR(skb)) {
1804                 int err = PTR_ERR(skb);
1805                 bt_dev_err(hdev, "CSR: Local version failed (%d)", err);
1806                 return err;
1807         }
1808
1809         if (skb->len != sizeof(struct hci_rp_read_local_version)) {
1810                 bt_dev_err(hdev, "CSR: Local version length mismatch");
1811                 kfree_skb(skb);
1812                 return -EIO;
1813         }
1814
1815         rp = (struct hci_rp_read_local_version *)skb->data;
1816
1817         /* Detect a wide host of Chinese controllers that aren't CSR.
1818          *
1819          * Known fake bcdDevices: 0x0100, 0x0134, 0x1915, 0x2520, 0x7558, 0x8891
1820          *
1821          * The main thing they have in common is that these are really popular low-cost
1822          * options that support newer Bluetooth versions but rely on heavy VID/PID
1823          * squatting of this poor old Bluetooth 1.1 device. Even sold as such.
1824          *
1825          * We detect actual CSR devices by checking that the HCI manufacturer code
1826          * is Cambridge Silicon Radio (10) and ensuring that LMP sub-version and
1827          * HCI rev values always match. As they both store the firmware number.
1828          */
1829         if (le16_to_cpu(rp->manufacturer) != 10 ||
1830             le16_to_cpu(rp->hci_rev) != le16_to_cpu(rp->lmp_subver))
1831                 is_fake = true;
1832
1833         /* Known legit CSR firmware build numbers and their supported BT versions:
1834          * - 1.1 (0x1) -> 0x0073, 0x020d, 0x033c, 0x034e
1835          * - 1.2 (0x2) ->                 0x04d9, 0x0529
1836          * - 2.0 (0x3) ->         0x07a6, 0x07ad, 0x0c5c
1837          * - 2.1 (0x4) ->         0x149c, 0x1735, 0x1899 (0x1899 is a BlueCore4-External)
1838          * - 4.0 (0x6) ->         0x1d86, 0x2031, 0x22bb
1839          *
1840          * e.g. Real CSR dongles with LMP subversion 0x73 are old enough that
1841          *      support BT 1.1 only; so it's a dead giveaway when some
1842          *      third-party BT 4.0 dongle reuses it.
1843          */
1844         else if (le16_to_cpu(rp->lmp_subver) <= 0x034e &&
1845                  le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_1_1)
1846                 is_fake = true;
1847
1848         else if (le16_to_cpu(rp->lmp_subver) <= 0x0529 &&
1849                  le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_1_2)
1850                 is_fake = true;
1851
1852         else if (le16_to_cpu(rp->lmp_subver) <= 0x0c5c &&
1853                  le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_2_0)
1854                 is_fake = true;
1855
1856         else if (le16_to_cpu(rp->lmp_subver) <= 0x1899 &&
1857                  le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_2_1)
1858                 is_fake = true;
1859
1860         else if (le16_to_cpu(rp->lmp_subver) <= 0x22bb &&
1861                  le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_4_0)
1862                 is_fake = true;
1863
1864         /* Other clones which beat all the above checks */
1865         else if (bcdDevice == 0x0134 &&
1866                  le16_to_cpu(rp->lmp_subver) == 0x0c5c &&
1867                  le16_to_cpu(rp->hci_ver) == BLUETOOTH_VER_2_0)
1868                 is_fake = true;
1869
1870         if (is_fake) {
1871                 bt_dev_warn(hdev, "CSR: Unbranded CSR clone detected; adding workarounds...");
1872
1873                 /* Generally these clones have big discrepancies between
1874                  * advertised features and what's actually supported.
1875                  * Probably will need to be expanded in the future;
1876                  * without these the controller will lock up.
1877                  */
1878                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
1879                 set_bit(HCI_QUIRK_BROKEN_ERR_DATA_REPORTING, &hdev->quirks);
1880
1881                 /* Clear the reset quirk since this is not an actual
1882                  * early Bluetooth 1.1 device from CSR.
1883                  */
1884                 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1885                 clear_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
1886
1887                 /*
1888                  * Special workaround for clones with a Barrot 8041a02 chip,
1889                  * these clones are really messed-up:
1890                  * 1. Their bulk rx endpoint will never report any data unless
1891                  * the device was suspended at least once (yes really).
1892                  * 2. They will not wakeup when autosuspended and receiving data
1893                  * on their bulk rx endpoint from e.g. a keyboard or mouse
1894                  * (IOW remote-wakeup support is broken for the bulk endpoint).
1895                  *
1896                  * To fix 1. enable runtime-suspend, force-suspend the
1897                  * hci and then wake-it up by disabling runtime-suspend.
1898                  *
1899                  * To fix 2. clear the hci's can_wake flag, this way the hci
1900                  * will still be autosuspended when it is not open.
1901                  */
1902                 if (bcdDevice == 0x8891 &&
1903                     le16_to_cpu(rp->lmp_subver) == 0x1012 &&
1904                     le16_to_cpu(rp->hci_rev) == 0x0810 &&
1905                     le16_to_cpu(rp->hci_ver) == BLUETOOTH_VER_4_0) {
1906                         bt_dev_warn(hdev, "CSR: detected a fake CSR dongle using a Barrot 8041a02 chip, this chip is very buggy and may have issues\n");
1907
1908                         pm_runtime_allow(&data->udev->dev);
1909
1910                         ret = pm_runtime_suspend(&data->udev->dev);
1911                         if (ret >= 0)
1912                                 msleep(200);
1913                         else
1914                                 bt_dev_err(hdev, "Failed to suspend the device for Barrot 8041a02 receive-issue workaround\n");
1915
1916                         pm_runtime_forbid(&data->udev->dev);
1917
1918                         device_set_wakeup_capable(&data->udev->dev, false);
1919                         /* Re-enable autosuspend if this was requested */
1920                         if (enable_autosuspend)
1921                                 usb_enable_autosuspend(data->udev);
1922                 }
1923         }
1924
1925         kfree_skb(skb);
1926
1927         return 0;
1928 }
1929
1930 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1931                                                        struct intel_version *ver)
1932 {
1933         const struct firmware *fw;
1934         char fwname[64];
1935         int ret;
1936
1937         snprintf(fwname, sizeof(fwname),
1938                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1939                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
1940                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1941                  ver->fw_build_ww, ver->fw_build_yy);
1942
1943         ret = request_firmware(&fw, fwname, &hdev->dev);
1944         if (ret < 0) {
1945                 if (ret == -EINVAL) {
1946                         bt_dev_err(hdev, "Intel firmware file request failed (%d)",
1947                                    ret);
1948                         return NULL;
1949                 }
1950
1951                 bt_dev_err(hdev, "failed to open Intel firmware file: %s (%d)",
1952                            fwname, ret);
1953
1954                 /* If the correct firmware patch file is not found, use the
1955                  * default firmware patch file instead
1956                  */
1957                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1958                          ver->hw_platform, ver->hw_variant);
1959                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1960                         bt_dev_err(hdev, "failed to open default fw file: %s",
1961                                    fwname);
1962                         return NULL;
1963                 }
1964         }
1965
1966         bt_dev_info(hdev, "Intel Bluetooth firmware file: %s", fwname);
1967
1968         return fw;
1969 }
1970
1971 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1972                                       const struct firmware *fw,
1973                                       const u8 **fw_ptr, int *disable_patch)
1974 {
1975         struct sk_buff *skb;
1976         struct hci_command_hdr *cmd;
1977         const u8 *cmd_param;
1978         struct hci_event_hdr *evt = NULL;
1979         const u8 *evt_param = NULL;
1980         int remain = fw->size - (*fw_ptr - fw->data);
1981
1982         /* The first byte indicates the types of the patch command or event.
1983          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1984          * in the current firmware buffer doesn't start with 0x01 or
1985          * the size of remain buffer is smaller than HCI command header,
1986          * the firmware file is corrupted and it should stop the patching
1987          * process.
1988          */
1989         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1990                 bt_dev_err(hdev, "Intel fw corrupted: invalid cmd read");
1991                 return -EINVAL;
1992         }
1993         (*fw_ptr)++;
1994         remain--;
1995
1996         cmd = (struct hci_command_hdr *)(*fw_ptr);
1997         *fw_ptr += sizeof(*cmd);
1998         remain -= sizeof(*cmd);
1999
2000         /* Ensure that the remain firmware data is long enough than the length
2001          * of command parameter. If not, the firmware file is corrupted.
2002          */
2003         if (remain < cmd->plen) {
2004                 bt_dev_err(hdev, "Intel fw corrupted: invalid cmd len");
2005                 return -EFAULT;
2006         }
2007
2008         /* If there is a command that loads a patch in the firmware
2009          * file, then enable the patch upon success, otherwise just
2010          * disable the manufacturer mode, for example patch activation
2011          * is not required when the default firmware patch file is used
2012          * because there are no patch data to load.
2013          */
2014         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
2015                 *disable_patch = 0;
2016
2017         cmd_param = *fw_ptr;
2018         *fw_ptr += cmd->plen;
2019         remain -= cmd->plen;
2020
2021         /* This reads the expected events when the above command is sent to the
2022          * device. Some vendor commands expects more than one events, for
2023          * example command status event followed by vendor specific event.
2024          * For this case, it only keeps the last expected event. so the command
2025          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
2026          * last expected event.
2027          */
2028         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
2029                 (*fw_ptr)++;
2030                 remain--;
2031
2032                 evt = (struct hci_event_hdr *)(*fw_ptr);
2033                 *fw_ptr += sizeof(*evt);
2034                 remain -= sizeof(*evt);
2035
2036                 if (remain < evt->plen) {
2037                         bt_dev_err(hdev, "Intel fw corrupted: invalid evt len");
2038                         return -EFAULT;
2039                 }
2040
2041                 evt_param = *fw_ptr;
2042                 *fw_ptr += evt->plen;
2043                 remain -= evt->plen;
2044         }
2045
2046         /* Every HCI commands in the firmware file has its correspond event.
2047          * If event is not found or remain is smaller than zero, the firmware
2048          * file is corrupted.
2049          */
2050         if (!evt || !evt_param || remain < 0) {
2051                 bt_dev_err(hdev, "Intel fw corrupted: invalid evt read");
2052                 return -EFAULT;
2053         }
2054
2055         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
2056                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
2057         if (IS_ERR(skb)) {
2058                 bt_dev_err(hdev, "sending Intel patch command (0x%4.4x) failed (%ld)",
2059                            cmd->opcode, PTR_ERR(skb));
2060                 return PTR_ERR(skb);
2061         }
2062
2063         /* It ensures that the returned event matches the event data read from
2064          * the firmware file. At fist, it checks the length and then
2065          * the contents of the event.
2066          */
2067         if (skb->len != evt->plen) {
2068                 bt_dev_err(hdev, "mismatch event length (opcode 0x%4.4x)",
2069                            le16_to_cpu(cmd->opcode));
2070                 kfree_skb(skb);
2071                 return -EFAULT;
2072         }
2073
2074         if (memcmp(skb->data, evt_param, evt->plen)) {
2075                 bt_dev_err(hdev, "mismatch event parameter (opcode 0x%4.4x)",
2076                            le16_to_cpu(cmd->opcode));
2077                 kfree_skb(skb);
2078                 return -EFAULT;
2079         }
2080         kfree_skb(skb);
2081
2082         return 0;
2083 }
2084
2085 static int btusb_setup_intel(struct hci_dev *hdev)
2086 {
2087         struct sk_buff *skb;
2088         const struct firmware *fw;
2089         const u8 *fw_ptr;
2090         int disable_patch, err;
2091         struct intel_version ver;
2092
2093         BT_DBG("%s", hdev->name);
2094
2095         /* The controller has a bug with the first HCI command sent to it
2096          * returning number of completed commands as zero. This would stall the
2097          * command processing in the Bluetooth core.
2098          *
2099          * As a workaround, send HCI Reset command first which will reset the
2100          * number of completed commands and allow normal command processing
2101          * from now on.
2102          */
2103         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2104         if (IS_ERR(skb)) {
2105                 bt_dev_err(hdev, "sending initial HCI reset command failed (%ld)",
2106                            PTR_ERR(skb));
2107                 return PTR_ERR(skb);
2108         }
2109         kfree_skb(skb);
2110
2111         /* Read Intel specific controller version first to allow selection of
2112          * which firmware file to load.
2113          *
2114          * The returned information are hardware variant and revision plus
2115          * firmware variant, revision and build number.
2116          */
2117         err = btintel_read_version(hdev, &ver);
2118         if (err)
2119                 return err;
2120
2121         bt_dev_info(hdev, "read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
2122                     ver.hw_platform, ver.hw_variant, ver.hw_revision,
2123                     ver.fw_variant,  ver.fw_revision, ver.fw_build_num,
2124                     ver.fw_build_ww, ver.fw_build_yy, ver.fw_patch_num);
2125
2126         /* fw_patch_num indicates the version of patch the device currently
2127          * have. If there is no patch data in the device, it is always 0x00.
2128          * So, if it is other than 0x00, no need to patch the device again.
2129          */
2130         if (ver.fw_patch_num) {
2131                 bt_dev_info(hdev, "Intel device is already patched. "
2132                             "patch num: %02x", ver.fw_patch_num);
2133                 goto complete;
2134         }
2135
2136         /* Opens the firmware patch file based on the firmware version read
2137          * from the controller. If it fails to open the matching firmware
2138          * patch file, it tries to open the default firmware patch file.
2139          * If no patch file is found, allow the device to operate without
2140          * a patch.
2141          */
2142         fw = btusb_setup_intel_get_fw(hdev, &ver);
2143         if (!fw)
2144                 goto complete;
2145         fw_ptr = fw->data;
2146
2147         /* Enable the manufacturer mode of the controller.
2148          * Only while this mode is enabled, the driver can download the
2149          * firmware patch data and configuration parameters.
2150          */
2151         err = btintel_enter_mfg(hdev);
2152         if (err) {
2153                 release_firmware(fw);
2154                 return err;
2155         }
2156
2157         disable_patch = 1;
2158
2159         /* The firmware data file consists of list of Intel specific HCI
2160          * commands and its expected events. The first byte indicates the
2161          * type of the message, either HCI command or HCI event.
2162          *
2163          * It reads the command and its expected event from the firmware file,
2164          * and send to the controller. Once __hci_cmd_sync_ev() returns,
2165          * the returned event is compared with the event read from the firmware
2166          * file and it will continue until all the messages are downloaded to
2167          * the controller.
2168          *
2169          * Once the firmware patching is completed successfully,
2170          * the manufacturer mode is disabled with reset and activating the
2171          * downloaded patch.
2172          *
2173          * If the firmware patching fails, the manufacturer mode is
2174          * disabled with reset and deactivating the patch.
2175          *
2176          * If the default patch file is used, no reset is done when disabling
2177          * the manufacturer.
2178          */
2179         while (fw->size > fw_ptr - fw->data) {
2180                 int ret;
2181
2182                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
2183                                                  &disable_patch);
2184                 if (ret < 0)
2185                         goto exit_mfg_deactivate;
2186         }
2187
2188         release_firmware(fw);
2189
2190         if (disable_patch)
2191                 goto exit_mfg_disable;
2192
2193         /* Patching completed successfully and disable the manufacturer mode
2194          * with reset and activate the downloaded firmware patches.
2195          */
2196         err = btintel_exit_mfg(hdev, true, true);
2197         if (err)
2198                 return err;
2199
2200         /* Need build number for downloaded fw patches in
2201          * every power-on boot
2202          */
2203        err = btintel_read_version(hdev, &ver);
2204        if (err)
2205                return err;
2206        bt_dev_info(hdev, "Intel BT fw patch 0x%02x completed & activated",
2207                    ver.fw_patch_num);
2208
2209         goto complete;
2210
2211 exit_mfg_disable:
2212         /* Disable the manufacturer mode without reset */
2213         err = btintel_exit_mfg(hdev, false, false);
2214         if (err)
2215                 return err;
2216
2217         bt_dev_info(hdev, "Intel firmware patch completed");
2218
2219         goto complete;
2220
2221 exit_mfg_deactivate:
2222         release_firmware(fw);
2223
2224         /* Patching failed. Disable the manufacturer mode with reset and
2225          * deactivate the downloaded firmware patches.
2226          */
2227         err = btintel_exit_mfg(hdev, true, false);
2228         if (err)
2229                 return err;
2230
2231         bt_dev_info(hdev, "Intel firmware patch completed and deactivated");
2232
2233 complete:
2234         /* Set the event mask for Intel specific vendor events. This enables
2235          * a few extra events that are useful during general operation.
2236          */
2237         btintel_set_event_mask_mfg(hdev, false);
2238
2239         btintel_check_bdaddr(hdev);
2240         return 0;
2241 }
2242
2243 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
2244 {
2245         struct sk_buff *skb;
2246         struct hci_event_hdr *hdr;
2247         struct hci_ev_cmd_complete *evt;
2248
2249         skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_KERNEL);
2250         if (!skb)
2251                 return -ENOMEM;
2252
2253         hdr = skb_put(skb, sizeof(*hdr));
2254         hdr->evt = HCI_EV_CMD_COMPLETE;
2255         hdr->plen = sizeof(*evt) + 1;
2256
2257         evt = skb_put(skb, sizeof(*evt));
2258         evt->ncmd = 0x01;
2259         evt->opcode = cpu_to_le16(opcode);
2260
2261         skb_put_u8(skb, 0x00);
2262
2263         hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
2264
2265         return hci_recv_frame(hdev, skb);
2266 }
2267
2268 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
2269                                  int count)
2270 {
2271         /* When the device is in bootloader mode, then it can send
2272          * events via the bulk endpoint. These events are treated the
2273          * same way as the ones received from the interrupt endpoint.
2274          */
2275         if (test_bit(BTUSB_BOOTLOADER, &data->flags))
2276                 return btusb_recv_intr(data, buffer, count);
2277
2278         return btusb_recv_bulk(data, buffer, count);
2279 }
2280
2281 static void btusb_intel_bootup(struct btusb_data *data, const void *ptr,
2282                                unsigned int len)
2283 {
2284         const struct intel_bootup *evt = ptr;
2285
2286         if (len != sizeof(*evt))
2287                 return;
2288
2289         if (test_and_clear_bit(BTUSB_BOOTING, &data->flags))
2290                 wake_up_bit(&data->flags, BTUSB_BOOTING);
2291 }
2292
2293 static void btusb_intel_secure_send_result(struct btusb_data *data,
2294                                            const void *ptr, unsigned int len)
2295 {
2296         const struct intel_secure_send_result *evt = ptr;
2297
2298         if (len != sizeof(*evt))
2299                 return;
2300
2301         if (evt->result)
2302                 set_bit(BTUSB_FIRMWARE_FAILED, &data->flags);
2303
2304         if (test_and_clear_bit(BTUSB_DOWNLOADING, &data->flags) &&
2305             test_bit(BTUSB_FIRMWARE_LOADED, &data->flags))
2306                 wake_up_bit(&data->flags, BTUSB_DOWNLOADING);
2307 }
2308
2309 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
2310 {
2311         struct btusb_data *data = hci_get_drvdata(hdev);
2312
2313         if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
2314                 struct hci_event_hdr *hdr = (void *)skb->data;
2315
2316                 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
2317                     hdr->plen > 0) {
2318                         const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
2319                         unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
2320
2321                         switch (skb->data[2]) {
2322                         case 0x02:
2323                                 /* When switching to the operational firmware
2324                                  * the device sends a vendor specific event
2325                                  * indicating that the bootup completed.
2326                                  */
2327                                 btusb_intel_bootup(data, ptr, len);
2328                                 break;
2329                         case 0x06:
2330                                 /* When the firmware loading completes the
2331                                  * device sends out a vendor specific event
2332                                  * indicating the result of the firmware
2333                                  * loading.
2334                                  */
2335                                 btusb_intel_secure_send_result(data, ptr, len);
2336                                 break;
2337                         }
2338                 }
2339         }
2340
2341         return hci_recv_frame(hdev, skb);
2342 }
2343
2344 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
2345 {
2346         struct btusb_data *data = hci_get_drvdata(hdev);
2347         struct urb *urb;
2348
2349         BT_DBG("%s", hdev->name);
2350
2351         switch (hci_skb_pkt_type(skb)) {
2352         case HCI_COMMAND_PKT:
2353                 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
2354                         struct hci_command_hdr *cmd = (void *)skb->data;
2355                         __u16 opcode = le16_to_cpu(cmd->opcode);
2356
2357                         /* When in bootloader mode and the command 0xfc09
2358                          * is received, it needs to be send down the
2359                          * bulk endpoint. So allocate a bulk URB instead.
2360                          */
2361                         if (opcode == 0xfc09)
2362                                 urb = alloc_bulk_urb(hdev, skb);
2363                         else
2364                                 urb = alloc_ctrl_urb(hdev, skb);
2365
2366                         /* When the 0xfc01 command is issued to boot into
2367                          * the operational firmware, it will actually not
2368                          * send a command complete event. To keep the flow
2369                          * control working inject that event here.
2370                          */
2371                         if (opcode == 0xfc01)
2372                                 inject_cmd_complete(hdev, opcode);
2373                 } else {
2374                         urb = alloc_ctrl_urb(hdev, skb);
2375                 }
2376                 if (IS_ERR(urb))
2377                         return PTR_ERR(urb);
2378
2379                 hdev->stat.cmd_tx++;
2380                 return submit_or_queue_tx_urb(hdev, urb);
2381
2382         case HCI_ACLDATA_PKT:
2383                 urb = alloc_bulk_urb(hdev, skb);
2384                 if (IS_ERR(urb))
2385                         return PTR_ERR(urb);
2386
2387                 hdev->stat.acl_tx++;
2388                 return submit_or_queue_tx_urb(hdev, urb);
2389
2390         case HCI_SCODATA_PKT:
2391                 if (hci_conn_num(hdev, SCO_LINK) < 1)
2392                         return -ENODEV;
2393
2394                 urb = alloc_isoc_urb(hdev, skb);
2395                 if (IS_ERR(urb))
2396                         return PTR_ERR(urb);
2397
2398                 hdev->stat.sco_tx++;
2399                 return submit_tx_urb(hdev, urb);
2400         }
2401
2402         return -EILSEQ;
2403 }
2404
2405 static bool btusb_setup_intel_new_get_fw_name(struct intel_version *ver,
2406                                              struct intel_boot_params *params,
2407                                              char *fw_name, size_t len,
2408                                              const char *suffix)
2409 {
2410         switch (ver->hw_variant) {
2411         case 0x0b:      /* SfP */
2412         case 0x0c:      /* WsP */
2413                 snprintf(fw_name, len, "intel/ibt-%u-%u.%s",
2414                         le16_to_cpu(ver->hw_variant),
2415                         le16_to_cpu(params->dev_revid),
2416                         suffix);
2417                 break;
2418         case 0x11:      /* JfP */
2419         case 0x12:      /* ThP */
2420         case 0x13:      /* HrP */
2421         case 0x14:      /* CcP */
2422                 snprintf(fw_name, len, "intel/ibt-%u-%u-%u.%s",
2423                         le16_to_cpu(ver->hw_variant),
2424                         le16_to_cpu(ver->hw_revision),
2425                         le16_to_cpu(ver->fw_revision),
2426                         suffix);
2427                 break;
2428         default:
2429                 return false;
2430         }
2431         return true;
2432 }
2433
2434 static void btusb_setup_intel_newgen_get_fw_name(const struct intel_version_tlv *ver_tlv,
2435                                                  char *fw_name, size_t len,
2436                                                  const char *suffix)
2437 {
2438         /* The firmware file name for new generation controllers will be
2439          * ibt-<cnvi_top type+cnvi_top step>-<cnvr_top type+cnvr_top step>
2440          */
2441         snprintf(fw_name, len, "intel/ibt-%04x-%04x.%s",
2442                  INTEL_CNVX_TOP_PACK_SWAB(INTEL_CNVX_TOP_TYPE(ver_tlv->cnvi_top),
2443                                           INTEL_CNVX_TOP_STEP(ver_tlv->cnvi_top)),
2444                  INTEL_CNVX_TOP_PACK_SWAB(INTEL_CNVX_TOP_TYPE(ver_tlv->cnvr_top),
2445                                           INTEL_CNVX_TOP_STEP(ver_tlv->cnvr_top)),
2446                  suffix);
2447 }
2448
2449 static int btusb_intel_download_firmware_newgen(struct hci_dev *hdev,
2450                                                 struct intel_version_tlv *ver,
2451                                                 u32 *boot_param)
2452 {
2453         const struct firmware *fw;
2454         char fwname[64];
2455         int err;
2456         struct btusb_data *data = hci_get_drvdata(hdev);
2457
2458         if (!ver || !boot_param)
2459                 return -EINVAL;
2460
2461         /* The hardware platform number has a fixed value of 0x37 and
2462          * for now only accept this single value.
2463          */
2464         if (INTEL_HW_PLATFORM(ver->cnvi_bt) != 0x37) {
2465                 bt_dev_err(hdev, "Unsupported Intel hardware platform (0x%2x)",
2466                            INTEL_HW_PLATFORM(ver->cnvi_bt));
2467                 return -EINVAL;
2468         }
2469
2470         /* The firmware variant determines if the device is in bootloader
2471          * mode or is running operational firmware. The value 0x03 identifies
2472          * the bootloader and the value 0x23 identifies the operational
2473          * firmware.
2474          *
2475          * When the operational firmware is already present, then only
2476          * the check for valid Bluetooth device address is needed. This
2477          * determines if the device will be added as configured or
2478          * unconfigured controller.
2479          *
2480          * It is not possible to use the Secure Boot Parameters in this
2481          * case since that command is only available in bootloader mode.
2482          */
2483         if (ver->img_type == 0x03) {
2484                 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2485                 btintel_check_bdaddr(hdev);
2486                 return 0;
2487         }
2488
2489         /* Check for supported iBT hardware variants of this firmware
2490          * loading method.
2491          *
2492          * This check has been put in place to ensure correct forward
2493          * compatibility options when newer hardware variants come along.
2494          */
2495         switch (INTEL_HW_VARIANT(ver->cnvi_bt)) {
2496         case 0x17:      /* TyP */
2497         case 0x18:      /* Slr */
2498         case 0x19:      /* Slr-F */
2499                 break;
2500         default:
2501                 bt_dev_err(hdev, "Unsupported Intel hardware variant (0x%x)",
2502                            INTEL_HW_VARIANT(ver->cnvi_bt));
2503                 return -EINVAL;
2504         }
2505
2506         /* If the device is not in bootloader mode, then the only possible
2507          * choice is to return an error and abort the device initialization.
2508          */
2509         if (ver->img_type != 0x01) {
2510                 bt_dev_err(hdev, "Unsupported Intel firmware variant (0x%x)",
2511                            ver->img_type);
2512                 return -ENODEV;
2513         }
2514
2515         /* It is required that every single firmware fragment is acknowledged
2516          * with a command complete event. If the boot parameters indicate
2517          * that this bootloader does not send them, then abort the setup.
2518          */
2519         if (ver->limited_cce != 0x00) {
2520                 bt_dev_err(hdev, "Unsupported Intel firmware loading method (0x%x)",
2521                            ver->limited_cce);
2522                 return -EINVAL;
2523         }
2524
2525         /* Secure boot engine type should be either 1 (ECDSA) or 0 (RSA) */
2526         if (ver->sbe_type > 0x01) {
2527                 bt_dev_err(hdev, "Unsupported Intel secure boot engine type (0x%x)",
2528                            ver->sbe_type);
2529                 return -EINVAL;
2530         }
2531
2532         /* If the OTP has no valid Bluetooth device address, then there will
2533          * also be no valid address for the operational firmware.
2534          */
2535         if (!bacmp(&ver->otp_bd_addr, BDADDR_ANY)) {
2536                 bt_dev_info(hdev, "No device address configured");
2537                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2538         }
2539
2540         btusb_setup_intel_newgen_get_fw_name(ver, fwname, sizeof(fwname), "sfi");
2541         err = request_firmware(&fw, fwname, &hdev->dev);
2542         if (err < 0) {
2543                 bt_dev_err(hdev, "Failed to load Intel firmware file (%d)", err);
2544                 return err;
2545         }
2546
2547         bt_dev_info(hdev, "Found device firmware: %s", fwname);
2548
2549         if (fw->size < 644) {
2550                 bt_dev_err(hdev, "Invalid size of firmware file (%zu)",
2551                            fw->size);
2552                 err = -EBADF;
2553                 goto done;
2554         }
2555
2556         set_bit(BTUSB_DOWNLOADING, &data->flags);
2557
2558         /* Start firmware downloading and get boot parameter */
2559         err = btintel_download_firmware_newgen(hdev, fw, boot_param,
2560                                                INTEL_HW_VARIANT(ver->cnvi_bt),
2561                                                ver->sbe_type);
2562         if (err < 0) {
2563                 /* When FW download fails, send Intel Reset to retry
2564                  * FW download.
2565                  */
2566                 btintel_reset_to_bootloader(hdev);
2567                 goto done;
2568         }
2569         set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2570
2571         bt_dev_info(hdev, "Waiting for firmware download to complete");
2572
2573         /* Before switching the device into operational mode and with that
2574          * booting the loaded firmware, wait for the bootloader notification
2575          * that all fragments have been successfully received.
2576          *
2577          * When the event processing receives the notification, then the
2578          * BTUSB_DOWNLOADING flag will be cleared.
2579          *
2580          * The firmware loading should not take longer than 5 seconds
2581          * and thus just timeout if that happens and fail the setup
2582          * of this device.
2583          */
2584         err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
2585                                   TASK_INTERRUPTIBLE,
2586                                   msecs_to_jiffies(5000));
2587         if (err == -EINTR) {
2588                 bt_dev_err(hdev, "Firmware loading interrupted");
2589                 goto done;
2590         }
2591
2592         if (err) {
2593                 bt_dev_err(hdev, "Firmware loading timeout");
2594                 err = -ETIMEDOUT;
2595                 btintel_reset_to_bootloader(hdev);
2596                 goto done;
2597         }
2598
2599         if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) {
2600                 bt_dev_err(hdev, "Firmware loading failed");
2601                 err = -ENOEXEC;
2602                 goto done;
2603         }
2604
2605 done:
2606         release_firmware(fw);
2607         return err;
2608 }
2609
2610 static int btusb_intel_download_firmware(struct hci_dev *hdev,
2611                                          struct intel_version *ver,
2612                                          struct intel_boot_params *params,
2613                                          u32 *boot_param)
2614 {
2615         const struct firmware *fw;
2616         char fwname[64];
2617         int err;
2618         struct btusb_data *data = hci_get_drvdata(hdev);
2619
2620         if (!ver || !params)
2621                 return -EINVAL;
2622
2623         /* The hardware platform number has a fixed value of 0x37 and
2624          * for now only accept this single value.
2625          */
2626         if (ver->hw_platform != 0x37) {
2627                 bt_dev_err(hdev, "Unsupported Intel hardware platform (%u)",
2628                            ver->hw_platform);
2629                 return -EINVAL;
2630         }
2631
2632         /* Check for supported iBT hardware variants of this firmware
2633          * loading method.
2634          *
2635          * This check has been put in place to ensure correct forward
2636          * compatibility options when newer hardware variants come along.
2637          */
2638         switch (ver->hw_variant) {
2639         case 0x0b:      /* SfP */
2640         case 0x0c:      /* WsP */
2641         case 0x11:      /* JfP */
2642         case 0x12:      /* ThP */
2643         case 0x13:      /* HrP */
2644         case 0x14:      /* CcP */
2645                 break;
2646         default:
2647                 bt_dev_err(hdev, "Unsupported Intel hardware variant (%u)",
2648                            ver->hw_variant);
2649                 return -EINVAL;
2650         }
2651
2652         btintel_version_info(hdev, ver);
2653
2654         /* The firmware variant determines if the device is in bootloader
2655          * mode or is running operational firmware. The value 0x06 identifies
2656          * the bootloader and the value 0x23 identifies the operational
2657          * firmware.
2658          *
2659          * When the operational firmware is already present, then only
2660          * the check for valid Bluetooth device address is needed. This
2661          * determines if the device will be added as configured or
2662          * unconfigured controller.
2663          *
2664          * It is not possible to use the Secure Boot Parameters in this
2665          * case since that command is only available in bootloader mode.
2666          */
2667         if (ver->fw_variant == 0x23) {
2668                 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2669                 btintel_check_bdaddr(hdev);
2670                 return 0;
2671         }
2672
2673         /* If the device is not in bootloader mode, then the only possible
2674          * choice is to return an error and abort the device initialization.
2675          */
2676         if (ver->fw_variant != 0x06) {
2677                 bt_dev_err(hdev, "Unsupported Intel firmware variant (%u)",
2678                            ver->fw_variant);
2679                 return -ENODEV;
2680         }
2681
2682         /* Read the secure boot parameters to identify the operating
2683          * details of the bootloader.
2684          */
2685         err = btintel_read_boot_params(hdev, params);
2686         if (err)
2687                 return err;
2688
2689         /* It is required that every single firmware fragment is acknowledged
2690          * with a command complete event. If the boot parameters indicate
2691          * that this bootloader does not send them, then abort the setup.
2692          */
2693         if (params->limited_cce != 0x00) {
2694                 bt_dev_err(hdev, "Unsupported Intel firmware loading method (%u)",
2695                            params->limited_cce);
2696                 return -EINVAL;
2697         }
2698
2699         /* If the OTP has no valid Bluetooth device address, then there will
2700          * also be no valid address for the operational firmware.
2701          */
2702         if (!bacmp(&params->otp_bdaddr, BDADDR_ANY)) {
2703                 bt_dev_info(hdev, "No device address configured");
2704                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2705         }
2706
2707         /* With this Intel bootloader only the hardware variant and device
2708          * revision information are used to select the right firmware for SfP
2709          * and WsP.
2710          *
2711          * The firmware filename is ibt-<hw_variant>-<dev_revid>.sfi.
2712          *
2713          * Currently the supported hardware variants are:
2714          *   11 (0x0b) for iBT3.0 (LnP/SfP)
2715          *   12 (0x0c) for iBT3.5 (WsP)
2716          *
2717          * For ThP/JfP and for future SKU's, the FW name varies based on HW
2718          * variant, HW revision and FW revision, as these are dependent on CNVi
2719          * and RF Combination.
2720          *
2721          *   17 (0x11) for iBT3.5 (JfP)
2722          *   18 (0x12) for iBT3.5 (ThP)
2723          *
2724          * The firmware file name for these will be
2725          * ibt-<hw_variant>-<hw_revision>-<fw_revision>.sfi.
2726          *
2727          */
2728         err = btusb_setup_intel_new_get_fw_name(ver, params, fwname,
2729                                                 sizeof(fwname), "sfi");
2730         if (!err) {
2731                 bt_dev_err(hdev, "Unsupported Intel firmware naming");
2732                 return -EINVAL;
2733         }
2734
2735         err = request_firmware(&fw, fwname, &hdev->dev);
2736         if (err < 0) {
2737                 bt_dev_err(hdev, "Failed to load Intel firmware file (%d)", err);
2738                 return err;
2739         }
2740
2741         bt_dev_info(hdev, "Found device firmware: %s", fwname);
2742
2743         if (fw->size < 644) {
2744                 bt_dev_err(hdev, "Invalid size of firmware file (%zu)",
2745                            fw->size);
2746                 err = -EBADF;
2747                 goto done;
2748         }
2749
2750         set_bit(BTUSB_DOWNLOADING, &data->flags);
2751
2752         /* Start firmware downloading and get boot parameter */
2753         err = btintel_download_firmware(hdev, fw, boot_param);
2754         if (err < 0) {
2755                 /* When FW download fails, send Intel Reset to retry
2756                  * FW download.
2757                  */
2758                 btintel_reset_to_bootloader(hdev);
2759                 goto done;
2760         }
2761         set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2762
2763         bt_dev_info(hdev, "Waiting for firmware download to complete");
2764
2765         /* Before switching the device into operational mode and with that
2766          * booting the loaded firmware, wait for the bootloader notification
2767          * that all fragments have been successfully received.
2768          *
2769          * When the event processing receives the notification, then the
2770          * BTUSB_DOWNLOADING flag will be cleared.
2771          *
2772          * The firmware loading should not take longer than 5 seconds
2773          * and thus just timeout if that happens and fail the setup
2774          * of this device.
2775          */
2776         err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
2777                                   TASK_INTERRUPTIBLE,
2778                                   msecs_to_jiffies(5000));
2779         if (err == -EINTR) {
2780                 bt_dev_err(hdev, "Firmware loading interrupted");
2781                 goto done;
2782         }
2783
2784         if (err) {
2785                 bt_dev_err(hdev, "Firmware loading timeout");
2786                 err = -ETIMEDOUT;
2787                 btintel_reset_to_bootloader(hdev);
2788                 goto done;
2789         }
2790
2791         if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) {
2792                 bt_dev_err(hdev, "Firmware loading failed");
2793                 err = -ENOEXEC;
2794                 goto done;
2795         }
2796
2797 done:
2798         release_firmware(fw);
2799         return err;
2800 }
2801
2802 static int btusb_setup_intel_new(struct hci_dev *hdev)
2803 {
2804         struct btusb_data *data = hci_get_drvdata(hdev);
2805         struct intel_version ver;
2806         struct intel_boot_params params;
2807         u32 boot_param;
2808         char ddcname[64];
2809         ktime_t calltime, delta, rettime;
2810         unsigned long long duration;
2811         int err;
2812         struct intel_debug_features features;
2813
2814         BT_DBG("%s", hdev->name);
2815
2816         /* Set the default boot parameter to 0x0 and it is updated to
2817          * SKU specific boot parameter after reading Intel_Write_Boot_Params
2818          * command while downloading the firmware.
2819          */
2820         boot_param = 0x00000000;
2821
2822         calltime = ktime_get();
2823
2824         /* Read the Intel version information to determine if the device
2825          * is in bootloader mode or if it already has operational firmware
2826          * loaded.
2827          */
2828         err = btintel_read_version(hdev, &ver);
2829         if (err) {
2830                 bt_dev_err(hdev, "Intel Read version failed (%d)", err);
2831                 btintel_reset_to_bootloader(hdev);
2832                 return err;
2833         }
2834
2835         err = btusb_intel_download_firmware(hdev, &ver, &params, &boot_param);
2836         if (err)
2837                 return err;
2838
2839         /* controller is already having an operational firmware */
2840         if (ver.fw_variant == 0x23)
2841                 goto finish;
2842
2843         rettime = ktime_get();
2844         delta = ktime_sub(rettime, calltime);
2845         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2846
2847         bt_dev_info(hdev, "Firmware loaded in %llu usecs", duration);
2848
2849         calltime = ktime_get();
2850
2851         set_bit(BTUSB_BOOTING, &data->flags);
2852
2853         err = btintel_send_intel_reset(hdev, boot_param);
2854         if (err) {
2855                 bt_dev_err(hdev, "Intel Soft Reset failed (%d)", err);
2856                 btintel_reset_to_bootloader(hdev);
2857                 return err;
2858         }
2859
2860         /* The bootloader will not indicate when the device is ready. This
2861          * is done by the operational firmware sending bootup notification.
2862          *
2863          * Booting into operational firmware should not take longer than
2864          * 1 second. However if that happens, then just fail the setup
2865          * since something went wrong.
2866          */
2867         bt_dev_info(hdev, "Waiting for device to boot");
2868
2869         err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING,
2870                                   TASK_INTERRUPTIBLE,
2871                                   msecs_to_jiffies(1000));
2872
2873         if (err == -EINTR) {
2874                 bt_dev_err(hdev, "Device boot interrupted");
2875                 return -EINTR;
2876         }
2877
2878         if (err) {
2879                 bt_dev_err(hdev, "Device boot timeout");
2880                 btintel_reset_to_bootloader(hdev);
2881                 return -ETIMEDOUT;
2882         }
2883
2884         rettime = ktime_get();
2885         delta = ktime_sub(rettime, calltime);
2886         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2887
2888         bt_dev_info(hdev, "Device booted in %llu usecs", duration);
2889
2890         clear_bit(BTUSB_BOOTLOADER, &data->flags);
2891
2892         err = btusb_setup_intel_new_get_fw_name(&ver, &params, ddcname,
2893                                                 sizeof(ddcname), "ddc");
2894
2895         if (!err) {
2896                 bt_dev_err(hdev, "Unsupported Intel firmware naming");
2897         } else {
2898                 /* Once the device is running in operational mode, it needs to
2899                  * apply the device configuration (DDC) parameters.
2900                  *
2901                  * The device can work without DDC parameters, so even if it
2902                  * fails to load the file, no need to fail the setup.
2903                  */
2904                 btintel_load_ddc_config(hdev, ddcname);
2905         }
2906
2907         /* Read the Intel supported features and if new exception formats
2908          * supported, need to load the additional DDC config to enable.
2909          */
2910         btintel_read_debug_features(hdev, &features);
2911
2912         /* Set DDC mask for available debug features */
2913         btintel_set_debug_features(hdev, &features);
2914
2915         /* Read the Intel version information after loading the FW  */
2916         err = btintel_read_version(hdev, &ver);
2917         if (err)
2918                 return err;
2919
2920         btintel_version_info(hdev, &ver);
2921
2922 finish:
2923         /* All Intel controllers that support the Microsoft vendor
2924          * extension are using 0xFC1E for VsMsftOpCode.
2925          */
2926         switch (ver.hw_variant) {
2927         case 0x12:      /* ThP */
2928                 hci_set_msft_opcode(hdev, 0xFC1E);
2929                 break;
2930         }
2931
2932         /* Set the event mask for Intel specific vendor events. This enables
2933          * a few extra events that are useful during general operation. It
2934          * does not enable any debugging related events.
2935          *
2936          * The device will function correctly without these events enabled
2937          * and thus no need to fail the setup.
2938          */
2939         btintel_set_event_mask(hdev, false);
2940
2941         return 0;
2942 }
2943
2944 static int btusb_setup_intel_newgen(struct hci_dev *hdev)
2945 {
2946         struct btusb_data *data = hci_get_drvdata(hdev);
2947         u32 boot_param;
2948         char ddcname[64];
2949         ktime_t calltime, delta, rettime;
2950         unsigned long long duration;
2951         int err;
2952         struct intel_debug_features features;
2953         struct intel_version_tlv version;
2954
2955         bt_dev_dbg(hdev, "");
2956
2957         /* Set the default boot parameter to 0x0 and it is updated to
2958          * SKU specific boot parameter after reading Intel_Write_Boot_Params
2959          * command while downloading the firmware.
2960          */
2961         boot_param = 0x00000000;
2962
2963         calltime = ktime_get();
2964
2965         /* Read the Intel version information to determine if the device
2966          * is in bootloader mode or if it already has operational firmware
2967          * loaded.
2968          */
2969         err = btintel_read_version_tlv(hdev, &version);
2970         if (err) {
2971                 bt_dev_err(hdev, "Intel Read version failed (%d)", err);
2972                 btintel_reset_to_bootloader(hdev);
2973                 return err;
2974         }
2975
2976         btintel_version_info_tlv(hdev, &version);
2977
2978         err = btusb_intel_download_firmware_newgen(hdev, &version, &boot_param);
2979         if (err)
2980                 return err;
2981
2982         /* check if controller is already having an operational firmware */
2983         if (version.img_type == 0x03)
2984                 goto finish;
2985
2986         rettime = ktime_get();
2987         delta = ktime_sub(rettime, calltime);
2988         duration = (unsigned long long)ktime_to_ns(delta) >> 10;
2989
2990         bt_dev_info(hdev, "Firmware loaded in %llu usecs", duration);
2991
2992         calltime = ktime_get();
2993
2994         set_bit(BTUSB_BOOTING, &data->flags);
2995
2996         err = btintel_send_intel_reset(hdev, boot_param);
2997         if (err) {
2998                 bt_dev_err(hdev, "Intel Soft Reset failed (%d)", err);
2999                 btintel_reset_to_bootloader(hdev);
3000                 return err;
3001         }
3002
3003         /* The bootloader will not indicate when the device is ready. This
3004          * is done by the operational firmware sending bootup notification.
3005          *
3006          * Booting into operational firmware should not take longer than
3007          * 1 second. However if that happens, then just fail the setup
3008          * since something went wrong.
3009          */
3010         bt_dev_info(hdev, "Waiting for device to boot");
3011
3012         err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING,
3013                                   TASK_INTERRUPTIBLE,
3014                                   msecs_to_jiffies(1000));
3015
3016         if (err == -EINTR) {
3017                 bt_dev_err(hdev, "Device boot interrupted");
3018                 return -EINTR;
3019         }
3020
3021         if (err) {
3022                 bt_dev_err(hdev, "Device boot timeout");
3023                 btintel_reset_to_bootloader(hdev);
3024                 return -ETIMEDOUT;
3025         }
3026
3027         rettime = ktime_get();
3028         delta = ktime_sub(rettime, calltime);
3029         duration = (unsigned long long)ktime_to_ns(delta) >> 10;
3030
3031         bt_dev_info(hdev, "Device booted in %llu usecs", duration);
3032
3033         clear_bit(BTUSB_BOOTLOADER, &data->flags);
3034
3035         btusb_setup_intel_newgen_get_fw_name(&version, ddcname, sizeof(ddcname),
3036                                              "ddc");
3037         /* Once the device is running in operational mode, it needs to
3038          * apply the device configuration (DDC) parameters.
3039          *
3040          * The device can work without DDC parameters, so even if it
3041          * fails to load the file, no need to fail the setup.
3042          */
3043         btintel_load_ddc_config(hdev, ddcname);
3044
3045         /* Read the Intel supported features and if new exception formats
3046          * supported, need to load the additional DDC config to enable.
3047          */
3048         btintel_read_debug_features(hdev, &features);
3049
3050         /* Set DDC mask for available debug features */
3051         btintel_set_debug_features(hdev, &features);
3052
3053         /* Read the Intel version information after loading the FW  */
3054         err = btintel_read_version_tlv(hdev, &version);
3055         if (err)
3056                 return err;
3057
3058         btintel_version_info_tlv(hdev, &version);
3059
3060 finish:
3061         /* Set the event mask for Intel specific vendor events. This enables
3062          * a few extra events that are useful during general operation. It
3063          * does not enable any debugging related events.
3064          *
3065          * The device will function correctly without these events enabled
3066          * and thus no need to fail the setup.
3067          */
3068         btintel_set_event_mask(hdev, false);
3069
3070         return 0;
3071 }
3072 static int btusb_shutdown_intel(struct hci_dev *hdev)
3073 {
3074         struct sk_buff *skb;
3075         long ret;
3076
3077         /* In the shutdown sequence where Bluetooth is turned off followed
3078          * by WiFi being turned off, turning WiFi back on causes issue with
3079          * the RF calibration.
3080          *
3081          * To ensure that any RF activity has been stopped, issue HCI Reset
3082          * command to clear all ongoing activity including advertising,
3083          * scanning etc.
3084          */
3085         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
3086         if (IS_ERR(skb)) {
3087                 ret = PTR_ERR(skb);
3088                 bt_dev_err(hdev, "HCI reset during shutdown failed");
3089                 return ret;
3090         }
3091         kfree_skb(skb);
3092
3093         /* Some platforms have an issue with BT LED when the interface is
3094          * down or BT radio is turned off, which takes 5 seconds to BT LED
3095          * goes off. This command turns off the BT LED immediately.
3096          */
3097         skb = __hci_cmd_sync(hdev, 0xfc3f, 0, NULL, HCI_INIT_TIMEOUT);
3098         if (IS_ERR(skb)) {
3099                 ret = PTR_ERR(skb);
3100                 bt_dev_err(hdev, "turning off Intel device LED failed");
3101                 return ret;
3102         }
3103         kfree_skb(skb);
3104
3105         return 0;
3106 }
3107
3108 static int btusb_shutdown_intel_new(struct hci_dev *hdev)
3109 {
3110         struct sk_buff *skb;
3111
3112         /* Send HCI Reset to the controller to stop any BT activity which
3113          * were triggered. This will help to save power and maintain the
3114          * sync b/w Host and controller
3115          */
3116         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
3117         if (IS_ERR(skb)) {
3118                 bt_dev_err(hdev, "HCI reset during shutdown failed");
3119                 return PTR_ERR(skb);
3120         }
3121         kfree_skb(skb);
3122
3123         return 0;
3124 }
3125
3126 #define FIRMWARE_MT7663         "mediatek/mt7663pr2h.bin"
3127 #define FIRMWARE_MT7668         "mediatek/mt7668pr2h.bin"
3128
3129 #define HCI_WMT_MAX_EVENT_SIZE          64
3130
3131 enum {
3132         BTMTK_WMT_PATCH_DWNLD = 0x1,
3133         BTMTK_WMT_FUNC_CTRL = 0x6,
3134         BTMTK_WMT_RST = 0x7,
3135         BTMTK_WMT_SEMAPHORE = 0x17,
3136 };
3137
3138 enum {
3139         BTMTK_WMT_INVALID,
3140         BTMTK_WMT_PATCH_UNDONE,
3141         BTMTK_WMT_PATCH_DONE,
3142         BTMTK_WMT_ON_UNDONE,
3143         BTMTK_WMT_ON_DONE,
3144         BTMTK_WMT_ON_PROGRESS,
3145 };
3146
3147 struct btmtk_wmt_hdr {
3148         u8      dir;
3149         u8      op;
3150         __le16  dlen;
3151         u8      flag;
3152 } __packed;
3153
3154 struct btmtk_hci_wmt_cmd {
3155         struct btmtk_wmt_hdr hdr;
3156         u8 data[256];
3157 } __packed;
3158
3159 struct btmtk_hci_wmt_evt {
3160         struct hci_event_hdr hhdr;
3161         struct btmtk_wmt_hdr whdr;
3162 } __packed;
3163
3164 struct btmtk_hci_wmt_evt_funcc {
3165         struct btmtk_hci_wmt_evt hwhdr;
3166         __be16 status;
3167 } __packed;
3168
3169 struct btmtk_tci_sleep {
3170         u8 mode;
3171         __le16 duration;
3172         __le16 host_duration;
3173         u8 host_wakeup_pin;
3174         u8 time_compensation;
3175 } __packed;
3176
3177 struct btmtk_hci_wmt_params {
3178         u8 op;
3179         u8 flag;
3180         u16 dlen;
3181         const void *data;
3182         u32 *status;
3183 };
3184
3185 static void btusb_mtk_wmt_recv(struct urb *urb)
3186 {
3187         struct hci_dev *hdev = urb->context;
3188         struct btusb_data *data = hci_get_drvdata(hdev);
3189         struct hci_event_hdr *hdr;
3190         struct sk_buff *skb;
3191         int err;
3192
3193         if (urb->status == 0 && urb->actual_length > 0) {
3194                 hdev->stat.byte_rx += urb->actual_length;
3195
3196                 /* WMT event shouldn't be fragmented and the size should be
3197                  * less than HCI_WMT_MAX_EVENT_SIZE.
3198                  */
3199                 skb = bt_skb_alloc(HCI_WMT_MAX_EVENT_SIZE, GFP_ATOMIC);
3200                 if (!skb) {
3201                         hdev->stat.err_rx++;
3202                         goto err_out;
3203                 }
3204
3205                 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
3206                 skb_put_data(skb, urb->transfer_buffer, urb->actual_length);
3207
3208                 hdr = (void *)skb->data;
3209                 /* Fix up the vendor event id with 0xff for vendor specific
3210                  * instead of 0xe4 so that event send via monitoring socket can
3211                  * be parsed properly.
3212                  */
3213                 hdr->evt = 0xff;
3214
3215                 /* When someone waits for the WMT event, the skb is being cloned
3216                  * and being processed the events from there then.
3217                  */
3218                 if (test_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags)) {
3219                         data->evt_skb = skb_clone(skb, GFP_ATOMIC);
3220                         if (!data->evt_skb)
3221                                 goto err_out;
3222                 }
3223
3224                 err = hci_recv_frame(hdev, skb);
3225                 if (err < 0)
3226                         goto err_free_skb;
3227
3228                 if (test_and_clear_bit(BTUSB_TX_WAIT_VND_EVT,
3229                                        &data->flags)) {
3230                         /* Barrier to sync with other CPUs */
3231                         smp_mb__after_atomic();
3232                         wake_up_bit(&data->flags,
3233                                     BTUSB_TX_WAIT_VND_EVT);
3234                 }
3235 err_out:
3236                 return;
3237 err_free_skb:
3238                 kfree_skb(data->evt_skb);
3239                 data->evt_skb = NULL;
3240                 return;
3241         } else if (urb->status == -ENOENT) {
3242                 /* Avoid suspend failed when usb_kill_urb */
3243                 return;
3244         }
3245
3246         usb_mark_last_busy(data->udev);
3247
3248         /* The URB complete handler is still called with urb->actual_length = 0
3249          * when the event is not available, so we should keep re-submitting
3250          * URB until WMT event returns, Also, It's necessary to wait some time
3251          * between the two consecutive control URBs to relax the target device
3252          * to generate the event. Otherwise, the WMT event cannot return from
3253          * the device successfully.
3254          */
3255         udelay(100);
3256
3257         usb_anchor_urb(urb, &data->ctrl_anchor);
3258         err = usb_submit_urb(urb, GFP_ATOMIC);
3259         if (err < 0) {
3260                 /* -EPERM: urb is being killed;
3261                  * -ENODEV: device got disconnected
3262                  */
3263                 if (err != -EPERM && err != -ENODEV)
3264                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
3265                                    urb, -err);
3266                 usb_unanchor_urb(urb);
3267         }
3268 }
3269
3270 static int btusb_mtk_submit_wmt_recv_urb(struct hci_dev *hdev)
3271 {
3272         struct btusb_data *data = hci_get_drvdata(hdev);
3273         struct usb_ctrlrequest *dr;
3274         unsigned char *buf;
3275         int err, size = 64;
3276         unsigned int pipe;
3277         struct urb *urb;
3278
3279         urb = usb_alloc_urb(0, GFP_KERNEL);
3280         if (!urb)
3281                 return -ENOMEM;
3282
3283         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
3284         if (!dr) {
3285                 usb_free_urb(urb);
3286                 return -ENOMEM;
3287         }
3288
3289         dr->bRequestType = USB_TYPE_VENDOR | USB_DIR_IN;
3290         dr->bRequest     = 1;
3291         dr->wIndex       = cpu_to_le16(0);
3292         dr->wValue       = cpu_to_le16(48);
3293         dr->wLength      = cpu_to_le16(size);
3294
3295         buf = kmalloc(size, GFP_KERNEL);
3296         if (!buf) {
3297                 kfree(dr);
3298                 usb_free_urb(urb);
3299                 return -ENOMEM;
3300         }
3301
3302         pipe = usb_rcvctrlpipe(data->udev, 0);
3303
3304         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
3305                              buf, size, btusb_mtk_wmt_recv, hdev);
3306
3307         urb->transfer_flags |= URB_FREE_BUFFER;
3308
3309         usb_anchor_urb(urb, &data->ctrl_anchor);
3310         err = usb_submit_urb(urb, GFP_KERNEL);
3311         if (err < 0) {
3312                 if (err != -EPERM && err != -ENODEV)
3313                         bt_dev_err(hdev, "urb %p submission failed (%d)",
3314                                    urb, -err);
3315                 usb_unanchor_urb(urb);
3316         }
3317
3318         usb_free_urb(urb);
3319
3320         return err;
3321 }
3322
3323 static int btusb_mtk_hci_wmt_sync(struct hci_dev *hdev,
3324                                   struct btmtk_hci_wmt_params *wmt_params)
3325 {
3326         struct btusb_data *data = hci_get_drvdata(hdev);
3327         struct btmtk_hci_wmt_evt_funcc *wmt_evt_funcc;
3328         u32 hlen, status = BTMTK_WMT_INVALID;
3329         struct btmtk_hci_wmt_evt *wmt_evt;
3330         struct btmtk_hci_wmt_cmd wc;
3331         struct btmtk_wmt_hdr *hdr;
3332         int err;
3333
3334         /* Submit control IN URB on demand to process the WMT event */
3335         err = btusb_mtk_submit_wmt_recv_urb(hdev);
3336         if (err < 0)
3337                 return err;
3338
3339         /* Send the WMT command and wait until the WMT event returns */
3340         hlen = sizeof(*hdr) + wmt_params->dlen;
3341         if (hlen > 255)
3342                 return -EINVAL;
3343
3344         hdr = (struct btmtk_wmt_hdr *)&wc;
3345         hdr->dir = 1;
3346         hdr->op = wmt_params->op;
3347         hdr->dlen = cpu_to_le16(wmt_params->dlen + 1);
3348         hdr->flag = wmt_params->flag;
3349         memcpy(wc.data, wmt_params->data, wmt_params->dlen);
3350
3351         set_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
3352
3353         err = __hci_cmd_send(hdev, 0xfc6f, hlen, &wc);
3354
3355         if (err < 0) {
3356                 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
3357                 return err;
3358         }
3359
3360         /* The vendor specific WMT commands are all answered by a vendor
3361          * specific event and will have the Command Status or Command
3362          * Complete as with usual HCI command flow control.
3363          *
3364          * After sending the command, wait for BTUSB_TX_WAIT_VND_EVT
3365          * state to be cleared. The driver specific event receive routine
3366          * will clear that state and with that indicate completion of the
3367          * WMT command.
3368          */
3369         err = wait_on_bit_timeout(&data->flags, BTUSB_TX_WAIT_VND_EVT,
3370                                   TASK_INTERRUPTIBLE, HCI_INIT_TIMEOUT);
3371         if (err == -EINTR) {
3372                 bt_dev_err(hdev, "Execution of wmt command interrupted");
3373                 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
3374                 return err;
3375         }
3376
3377         if (err) {
3378                 bt_dev_err(hdev, "Execution of wmt command timed out");
3379                 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
3380                 return -ETIMEDOUT;
3381         }
3382
3383         /* Parse and handle the return WMT event */
3384         wmt_evt = (struct btmtk_hci_wmt_evt *)data->evt_skb->data;
3385         if (wmt_evt->whdr.op != hdr->op) {
3386                 bt_dev_err(hdev, "Wrong op received %d expected %d",
3387                            wmt_evt->whdr.op, hdr->op);
3388                 err = -EIO;
3389                 goto err_free_skb;
3390         }
3391
3392         switch (wmt_evt->whdr.op) {
3393         case BTMTK_WMT_SEMAPHORE:
3394                 if (wmt_evt->whdr.flag == 2)
3395                         status = BTMTK_WMT_PATCH_UNDONE;
3396                 else
3397                         status = BTMTK_WMT_PATCH_DONE;
3398                 break;
3399         case BTMTK_WMT_FUNC_CTRL:
3400                 wmt_evt_funcc = (struct btmtk_hci_wmt_evt_funcc *)wmt_evt;
3401                 if (be16_to_cpu(wmt_evt_funcc->status) == 0x404)
3402                         status = BTMTK_WMT_ON_DONE;
3403                 else if (be16_to_cpu(wmt_evt_funcc->status) == 0x420)
3404                         status = BTMTK_WMT_ON_PROGRESS;
3405                 else
3406                         status = BTMTK_WMT_ON_UNDONE;
3407                 break;
3408         }
3409
3410         if (wmt_params->status)
3411                 *wmt_params->status = status;
3412
3413 err_free_skb:
3414         kfree_skb(data->evt_skb);
3415         data->evt_skb = NULL;
3416
3417         return err;
3418 }
3419
3420 static int btusb_mtk_setup_firmware(struct hci_dev *hdev, const char *fwname)
3421 {
3422         struct btmtk_hci_wmt_params wmt_params;
3423         const struct firmware *fw;
3424         const u8 *fw_ptr;
3425         size_t fw_size;
3426         int err, dlen;
3427         u8 flag, param;
3428
3429         err = request_firmware(&fw, fwname, &hdev->dev);
3430         if (err < 0) {
3431                 bt_dev_err(hdev, "Failed to load firmware file (%d)", err);
3432                 return err;
3433         }
3434
3435         /* Power on data RAM the firmware relies on. */
3436         param = 1;
3437         wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3438         wmt_params.flag = 3;
3439         wmt_params.dlen = sizeof(param);
3440         wmt_params.data = &param;
3441         wmt_params.status = NULL;
3442
3443         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3444         if (err < 0) {
3445                 bt_dev_err(hdev, "Failed to power on data RAM (%d)", err);
3446                 goto err_release_fw;
3447         }
3448
3449         fw_ptr = fw->data;
3450         fw_size = fw->size;
3451
3452         /* The size of patch header is 30 bytes, should be skip */
3453         if (fw_size < 30) {
3454                 err = -EINVAL;
3455                 goto err_release_fw;
3456         }
3457
3458         fw_size -= 30;
3459         fw_ptr += 30;
3460         flag = 1;
3461
3462         wmt_params.op = BTMTK_WMT_PATCH_DWNLD;
3463         wmt_params.status = NULL;
3464
3465         while (fw_size > 0) {
3466                 dlen = min_t(int, 250, fw_size);
3467
3468                 /* Tell deivice the position in sequence */
3469                 if (fw_size - dlen <= 0)
3470                         flag = 3;
3471                 else if (fw_size < fw->size - 30)
3472                         flag = 2;
3473
3474                 wmt_params.flag = flag;
3475                 wmt_params.dlen = dlen;
3476                 wmt_params.data = fw_ptr;
3477
3478                 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3479                 if (err < 0) {
3480                         bt_dev_err(hdev, "Failed to send wmt patch dwnld (%d)",
3481                                    err);
3482                         goto err_release_fw;
3483                 }
3484
3485                 fw_size -= dlen;
3486                 fw_ptr += dlen;
3487         }
3488
3489         wmt_params.op = BTMTK_WMT_RST;
3490         wmt_params.flag = 4;
3491         wmt_params.dlen = 0;
3492         wmt_params.data = NULL;
3493         wmt_params.status = NULL;
3494
3495         /* Activate funciton the firmware providing to */
3496         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3497         if (err < 0) {
3498                 bt_dev_err(hdev, "Failed to send wmt rst (%d)", err);
3499                 goto err_release_fw;
3500         }
3501
3502         /* Wait a few moments for firmware activation done */
3503         usleep_range(10000, 12000);
3504
3505 err_release_fw:
3506         release_firmware(fw);
3507
3508         return err;
3509 }
3510
3511 static int btusb_mtk_func_query(struct hci_dev *hdev)
3512 {
3513         struct btmtk_hci_wmt_params wmt_params;
3514         int status, err;
3515         u8 param = 0;
3516
3517         /* Query whether the function is enabled */
3518         wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3519         wmt_params.flag = 4;
3520         wmt_params.dlen = sizeof(param);
3521         wmt_params.data = &param;
3522         wmt_params.status = &status;
3523
3524         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3525         if (err < 0) {
3526                 bt_dev_err(hdev, "Failed to query function status (%d)", err);
3527                 return err;
3528         }
3529
3530         return status;
3531 }
3532
3533 static int btusb_mtk_reg_read(struct btusb_data *data, u32 reg, u32 *val)
3534 {
3535         int pipe, err, size = sizeof(u32);
3536         void *buf;
3537
3538         buf = kzalloc(size, GFP_KERNEL);
3539         if (!buf)
3540                 return -ENOMEM;
3541
3542         pipe = usb_rcvctrlpipe(data->udev, 0);
3543         err = usb_control_msg(data->udev, pipe, 0x63,
3544                               USB_TYPE_VENDOR | USB_DIR_IN,
3545                               reg >> 16, reg & 0xffff,
3546                               buf, size, USB_CTRL_SET_TIMEOUT);
3547         if (err < 0)
3548                 goto err_free_buf;
3549
3550         *val = get_unaligned_le32(buf);
3551
3552 err_free_buf:
3553         kfree(buf);
3554
3555         return err;
3556 }
3557
3558 static int btusb_mtk_id_get(struct btusb_data *data, u32 *id)
3559 {
3560         return btusb_mtk_reg_read(data, 0x80000008, id);
3561 }
3562
3563 static int btusb_mtk_setup(struct hci_dev *hdev)
3564 {
3565         struct btusb_data *data = hci_get_drvdata(hdev);
3566         struct btmtk_hci_wmt_params wmt_params;
3567         ktime_t calltime, delta, rettime;
3568         struct btmtk_tci_sleep tci_sleep;
3569         unsigned long long duration;
3570         struct sk_buff *skb;
3571         const char *fwname;
3572         int err, status;
3573         u32 dev_id;
3574         u8 param;
3575
3576         calltime = ktime_get();
3577
3578         err = btusb_mtk_id_get(data, &dev_id);
3579         if (err < 0) {
3580                 bt_dev_err(hdev, "Failed to get device id (%d)", err);
3581                 return err;
3582         }
3583
3584         switch (dev_id) {
3585         case 0x7663:
3586                 fwname = FIRMWARE_MT7663;
3587                 break;
3588         case 0x7668:
3589                 fwname = FIRMWARE_MT7668;
3590                 break;
3591         default:
3592                 bt_dev_err(hdev, "Unsupported support hardware variant (%08x)",
3593                            dev_id);
3594                 return -ENODEV;
3595         }
3596
3597         /* Query whether the firmware is already download */
3598         wmt_params.op = BTMTK_WMT_SEMAPHORE;
3599         wmt_params.flag = 1;
3600         wmt_params.dlen = 0;
3601         wmt_params.data = NULL;
3602         wmt_params.status = &status;
3603
3604         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3605         if (err < 0) {
3606                 bt_dev_err(hdev, "Failed to query firmware status (%d)", err);
3607                 return err;
3608         }
3609
3610         if (status == BTMTK_WMT_PATCH_DONE) {
3611                 bt_dev_info(hdev, "firmware already downloaded");
3612                 goto ignore_setup_fw;
3613         }
3614
3615         /* Setup a firmware which the device definitely requires */
3616         err = btusb_mtk_setup_firmware(hdev, fwname);
3617         if (err < 0)
3618                 return err;
3619
3620 ignore_setup_fw:
3621         err = readx_poll_timeout(btusb_mtk_func_query, hdev, status,
3622                                  status < 0 || status != BTMTK_WMT_ON_PROGRESS,
3623                                  2000, 5000000);
3624         /* -ETIMEDOUT happens */
3625         if (err < 0)
3626                 return err;
3627
3628         /* The other errors happen in btusb_mtk_func_query */
3629         if (status < 0)
3630                 return status;
3631
3632         if (status == BTMTK_WMT_ON_DONE) {
3633                 bt_dev_info(hdev, "function already on");
3634                 goto ignore_func_on;
3635         }
3636
3637         /* Enable Bluetooth protocol */
3638         param = 1;
3639         wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3640         wmt_params.flag = 0;
3641         wmt_params.dlen = sizeof(param);
3642         wmt_params.data = &param;
3643         wmt_params.status = NULL;
3644
3645         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3646         if (err < 0) {
3647                 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
3648                 return err;
3649         }
3650
3651 ignore_func_on:
3652         /* Apply the low power environment setup */
3653         tci_sleep.mode = 0x5;
3654         tci_sleep.duration = cpu_to_le16(0x640);
3655         tci_sleep.host_duration = cpu_to_le16(0x640);
3656         tci_sleep.host_wakeup_pin = 0;
3657         tci_sleep.time_compensation = 0;
3658
3659         skb = __hci_cmd_sync(hdev, 0xfc7a, sizeof(tci_sleep), &tci_sleep,
3660                              HCI_INIT_TIMEOUT);
3661         if (IS_ERR(skb)) {
3662                 err = PTR_ERR(skb);
3663                 bt_dev_err(hdev, "Failed to apply low power setting (%d)", err);
3664                 return err;
3665         }
3666         kfree_skb(skb);
3667
3668         rettime = ktime_get();
3669         delta = ktime_sub(rettime, calltime);
3670         duration = (unsigned long long)ktime_to_ns(delta) >> 10;
3671
3672         bt_dev_info(hdev, "Device setup in %llu usecs", duration);
3673
3674         return 0;
3675 }
3676
3677 static int btusb_mtk_shutdown(struct hci_dev *hdev)
3678 {
3679         struct btmtk_hci_wmt_params wmt_params;
3680         u8 param = 0;
3681         int err;
3682
3683         /* Disable the device */
3684         wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3685         wmt_params.flag = 0;
3686         wmt_params.dlen = sizeof(param);
3687         wmt_params.data = &param;
3688         wmt_params.status = NULL;
3689
3690         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3691         if (err < 0) {
3692                 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
3693                 return err;
3694         }
3695
3696         return 0;
3697 }
3698
3699 MODULE_FIRMWARE(FIRMWARE_MT7663);
3700 MODULE_FIRMWARE(FIRMWARE_MT7668);
3701
3702 #ifdef CONFIG_PM
3703 /* Configure an out-of-band gpio as wake-up pin, if specified in device tree */
3704 static int marvell_config_oob_wake(struct hci_dev *hdev)
3705 {
3706         struct sk_buff *skb;
3707         struct btusb_data *data = hci_get_drvdata(hdev);
3708         struct device *dev = &data->udev->dev;
3709         u16 pin, gap, opcode;
3710         int ret;
3711         u8 cmd[5];
3712
3713         /* Move on if no wakeup pin specified */
3714         if (of_property_read_u16(dev->of_node, "marvell,wakeup-pin", &pin) ||
3715             of_property_read_u16(dev->of_node, "marvell,wakeup-gap-ms", &gap))
3716                 return 0;
3717
3718         /* Vendor specific command to configure a GPIO as wake-up pin */
3719         opcode = hci_opcode_pack(0x3F, 0x59);
3720         cmd[0] = opcode & 0xFF;
3721         cmd[1] = opcode >> 8;
3722         cmd[2] = 2; /* length of parameters that follow */
3723         cmd[3] = pin;
3724         cmd[4] = gap; /* time in ms, for which wakeup pin should be asserted */
3725
3726         skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
3727         if (!skb) {
3728                 bt_dev_err(hdev, "%s: No memory\n", __func__);
3729                 return -ENOMEM;
3730         }
3731
3732         skb_put_data(skb, cmd, sizeof(cmd));
3733         hci_skb_pkt_type(skb) = HCI_COMMAND_PKT;
3734
3735         ret = btusb_send_frame(hdev, skb);
3736         if (ret) {
3737                 bt_dev_err(hdev, "%s: configuration failed\n", __func__);
3738                 kfree_skb(skb);
3739                 return ret;
3740         }
3741
3742         return 0;
3743 }
3744 #endif
3745
3746 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
3747                                     const bdaddr_t *bdaddr)
3748 {
3749         struct sk_buff *skb;
3750         u8 buf[8];
3751         long ret;
3752
3753         buf[0] = 0xfe;
3754         buf[1] = sizeof(bdaddr_t);
3755         memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
3756
3757         skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
3758         if (IS_ERR(skb)) {
3759                 ret = PTR_ERR(skb);
3760                 bt_dev_err(hdev, "changing Marvell device address failed (%ld)",
3761                            ret);
3762                 return ret;
3763         }
3764         kfree_skb(skb);
3765
3766         return 0;
3767 }
3768
3769 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
3770                                     const bdaddr_t *bdaddr)
3771 {
3772         struct sk_buff *skb;
3773         u8 buf[10];
3774         long ret;
3775
3776         buf[0] = 0x01;
3777         buf[1] = 0x01;
3778         buf[2] = 0x00;
3779         buf[3] = sizeof(bdaddr_t);
3780         memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
3781
3782         skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
3783         if (IS_ERR(skb)) {
3784                 ret = PTR_ERR(skb);
3785                 bt_dev_err(hdev, "Change address command failed (%ld)", ret);
3786                 return ret;
3787         }
3788         kfree_skb(skb);
3789
3790         return 0;
3791 }
3792
3793 static int btusb_set_bdaddr_wcn6855(struct hci_dev *hdev,
3794                                 const bdaddr_t *bdaddr)
3795 {
3796         struct sk_buff *skb;
3797         u8 buf[6];
3798         long ret;
3799
3800         memcpy(buf, bdaddr, sizeof(bdaddr_t));
3801
3802         skb = __hci_cmd_sync_ev(hdev, 0xfc14, sizeof(buf), buf,
3803                                 HCI_EV_CMD_COMPLETE, HCI_INIT_TIMEOUT);
3804         if (IS_ERR(skb)) {
3805                 ret = PTR_ERR(skb);
3806                 bt_dev_err(hdev, "Change address command failed (%ld)", ret);
3807                 return ret;
3808         }
3809         kfree_skb(skb);
3810
3811         return 0;
3812 }
3813
3814 #define QCA_DFU_PACKET_LEN      4096
3815
3816 #define QCA_GET_TARGET_VERSION  0x09
3817 #define QCA_CHECK_STATUS        0x05
3818 #define QCA_DFU_DOWNLOAD        0x01
3819
3820 #define QCA_SYSCFG_UPDATED      0x40
3821 #define QCA_PATCH_UPDATED       0x80
3822 #define QCA_DFU_TIMEOUT         3000
3823 #define QCA_FLAG_MULTI_NVM      0x80
3824
3825 struct qca_version {
3826         __le32  rom_version;
3827         __le32  patch_version;
3828         __le32  ram_version;
3829         __le16  board_id;
3830         __le16  flag;
3831         __u8    reserved[4];
3832 } __packed;
3833
3834 struct qca_rampatch_version {
3835         __le16  rom_version_high;
3836         __le16  rom_version_low;
3837         __le16  patch_version;
3838 } __packed;
3839
3840 struct qca_device_info {
3841         u32     rom_version;
3842         u8      rampatch_hdr;   /* length of header in rampatch */
3843         u8      nvm_hdr;        /* length of header in NVM */
3844         u8      ver_offset;     /* offset of version structure in rampatch */
3845 };
3846
3847 static const struct qca_device_info qca_devices_table[] = {
3848         { 0x00000100, 20, 4,  8 }, /* Rome 1.0 */
3849         { 0x00000101, 20, 4,  8 }, /* Rome 1.1 */
3850         { 0x00000200, 28, 4, 16 }, /* Rome 2.0 */
3851         { 0x00000201, 28, 4, 16 }, /* Rome 2.1 */
3852         { 0x00000300, 28, 4, 16 }, /* Rome 3.0 */
3853         { 0x00000302, 28, 4, 16 }, /* Rome 3.2 */
3854         { 0x00130100, 40, 4, 16 }, /* WCN6855 1.0 */
3855         { 0x00130200, 40, 4, 16 }, /* WCN6855 2.0 */
3856 };
3857
3858 static int btusb_qca_send_vendor_req(struct usb_device *udev, u8 request,
3859                                      void *data, u16 size)
3860 {
3861         int pipe, err;
3862         u8 *buf;
3863
3864         buf = kmalloc(size, GFP_KERNEL);
3865         if (!buf)
3866                 return -ENOMEM;
3867
3868         /* Found some of USB hosts have IOT issues with ours so that we should
3869          * not wait until HCI layer is ready.
3870          */
3871         pipe = usb_rcvctrlpipe(udev, 0);
3872         err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
3873                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
3874         if (err < 0) {
3875                 dev_err(&udev->dev, "Failed to access otp area (%d)", err);
3876                 goto done;
3877         }
3878
3879         memcpy(data, buf, size);
3880
3881 done:
3882         kfree(buf);
3883
3884         return err;
3885 }
3886
3887 static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
3888                                        const struct firmware *firmware,
3889                                        size_t hdr_size)
3890 {
3891         struct btusb_data *btdata = hci_get_drvdata(hdev);
3892         struct usb_device *udev = btdata->udev;
3893         size_t count, size, sent = 0;
3894         int pipe, len, err;
3895         u8 *buf;
3896
3897         buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
3898         if (!buf)
3899                 return -ENOMEM;
3900
3901         count = firmware->size;
3902
3903         size = min_t(size_t, count, hdr_size);
3904         memcpy(buf, firmware->data, size);
3905
3906         /* USB patches should go down to controller through USB path
3907          * because binary format fits to go down through USB channel.
3908          * USB control path is for patching headers and USB bulk is for
3909          * patch body.
3910          */
3911         pipe = usb_sndctrlpipe(udev, 0);
3912         err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
3913                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
3914         if (err < 0) {
3915                 bt_dev_err(hdev, "Failed to send headers (%d)", err);
3916                 goto done;
3917         }
3918
3919         sent += size;
3920         count -= size;
3921
3922         while (count) {
3923                 size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
3924
3925                 memcpy(buf, firmware->data + sent, size);
3926
3927                 pipe = usb_sndbulkpipe(udev, 0x02);
3928                 err = usb_bulk_msg(udev, pipe, buf, size, &len,
3929                                    QCA_DFU_TIMEOUT);
3930                 if (err < 0) {
3931                         bt_dev_err(hdev, "Failed to send body at %zd of %zd (%d)",
3932                                    sent, firmware->size, err);
3933                         break;
3934                 }
3935
3936                 if (size != len) {
3937                         bt_dev_err(hdev, "Failed to get bulk buffer");
3938                         err = -EILSEQ;
3939                         break;
3940                 }
3941
3942                 sent  += size;
3943                 count -= size;
3944         }
3945
3946 done:
3947         kfree(buf);
3948         return err;
3949 }
3950
3951 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
3952                                          struct qca_version *ver,
3953                                          const struct qca_device_info *info)
3954 {
3955         struct qca_rampatch_version *rver;
3956         const struct firmware *fw;
3957         u32 ver_rom, ver_patch, rver_rom;
3958         u16 rver_rom_low, rver_rom_high, rver_patch;
3959         char fwname[64];
3960         int err;
3961
3962         ver_rom = le32_to_cpu(ver->rom_version);
3963         ver_patch = le32_to_cpu(ver->patch_version);
3964
3965         snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom);
3966
3967         err = request_firmware(&fw, fwname, &hdev->dev);
3968         if (err) {
3969                 bt_dev_err(hdev, "failed to request rampatch file: %s (%d)",
3970                            fwname, err);
3971                 return err;
3972         }
3973
3974         bt_dev_info(hdev, "using rampatch file: %s", fwname);
3975
3976         rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
3977         rver_rom_low = le16_to_cpu(rver->rom_version_low);
3978         rver_patch = le16_to_cpu(rver->patch_version);
3979
3980         if (ver_rom & ~0xffffU) {
3981                 rver_rom_high = le16_to_cpu(rver->rom_version_high);
3982                 rver_rom = le32_to_cpu(rver_rom_high << 16 | rver_rom_low);
3983         } else {
3984                 rver_rom = rver_rom_low;
3985         }
3986
3987         bt_dev_info(hdev, "QCA: patch rome 0x%x build 0x%x, "
3988                     "firmware rome 0x%x build 0x%x",
3989                     rver_rom, rver_patch, ver_rom, ver_patch);
3990
3991         if (rver_rom != ver_rom || rver_patch <= ver_patch) {
3992                 bt_dev_err(hdev, "rampatch file version did not match with firmware");
3993                 err = -EINVAL;
3994                 goto done;
3995         }
3996
3997         err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
3998
3999 done:
4000         release_firmware(fw);
4001
4002         return err;
4003 }
4004
4005 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
4006                                     struct qca_version *ver,
4007                                     const struct qca_device_info *info)
4008 {
4009         const struct firmware *fw;
4010         char fwname[64];
4011         int err;
4012
4013         if (((ver->flag >> 8) & 0xff) == QCA_FLAG_MULTI_NVM) {
4014                 snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x_%04x.bin",
4015                          le32_to_cpu(ver->rom_version),
4016                          le16_to_cpu(ver->board_id));
4017         } else {
4018                 snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x.bin",
4019                          le32_to_cpu(ver->rom_version));
4020         }
4021
4022         err = request_firmware(&fw, fwname, &hdev->dev);
4023         if (err) {
4024                 bt_dev_err(hdev, "failed to request NVM file: %s (%d)",
4025                            fwname, err);
4026                 return err;
4027         }
4028
4029         bt_dev_info(hdev, "using NVM file: %s", fwname);
4030
4031         err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
4032
4033         release_firmware(fw);
4034
4035         return err;
4036 }
4037
4038 /* identify the ROM version and check whether patches are needed */
4039 static bool btusb_qca_need_patch(struct usb_device *udev)
4040 {
4041         struct qca_version ver;
4042
4043         if (btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
4044                                       sizeof(ver)) < 0)
4045                 return false;
4046         /* only low ROM versions need patches */
4047         return !(le32_to_cpu(ver.rom_version) & ~0xffffU);
4048 }
4049
4050 static int btusb_setup_qca(struct hci_dev *hdev)
4051 {
4052         struct btusb_data *btdata = hci_get_drvdata(hdev);
4053         struct usb_device *udev = btdata->udev;
4054         const struct qca_device_info *info = NULL;
4055         struct qca_version ver;
4056         u32 ver_rom;
4057         u8 status;
4058         int i, err;
4059
4060         err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
4061                                         sizeof(ver));
4062         if (err < 0)
4063                 return err;
4064
4065         ver_rom = le32_to_cpu(ver.rom_version);
4066
4067         for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
4068                 if (ver_rom == qca_devices_table[i].rom_version)
4069                         info = &qca_devices_table[i];
4070         }
4071         if (!info) {
4072                 bt_dev_err(hdev, "don't support firmware rome 0x%x", ver_rom);
4073                 return -ENODEV;
4074         }
4075
4076         err = btusb_qca_send_vendor_req(udev, QCA_CHECK_STATUS, &status,
4077                                         sizeof(status));
4078         if (err < 0)
4079                 return err;
4080
4081         if (!(status & QCA_PATCH_UPDATED)) {
4082                 err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
4083                 if (err < 0)
4084                         return err;
4085         }
4086
4087         err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
4088                                         sizeof(ver));
4089         if (err < 0)
4090                 return err;
4091
4092         if (!(status & QCA_SYSCFG_UPDATED)) {
4093                 err = btusb_setup_qca_load_nvm(hdev, &ver, info);
4094                 if (err < 0)
4095                         return err;
4096         }
4097
4098         return 0;
4099 }
4100
4101 static inline int __set_diag_interface(struct hci_dev *hdev)
4102 {
4103         struct btusb_data *data = hci_get_drvdata(hdev);
4104         struct usb_interface *intf = data->diag;
4105         int i;
4106
4107         if (!data->diag)
4108                 return -ENODEV;
4109
4110         data->diag_tx_ep = NULL;
4111         data->diag_rx_ep = NULL;
4112
4113         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
4114                 struct usb_endpoint_descriptor *ep_desc;
4115
4116                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
4117
4118                 if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
4119                         data->diag_tx_ep = ep_desc;
4120                         continue;
4121                 }
4122
4123                 if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
4124                         data->diag_rx_ep = ep_desc;
4125                         continue;
4126                 }
4127         }
4128
4129         if (!data->diag_tx_ep || !data->diag_rx_ep) {
4130                 bt_dev_err(hdev, "invalid diagnostic descriptors");
4131                 return -ENODEV;
4132         }
4133
4134         return 0;
4135 }
4136
4137 static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable)
4138 {
4139         struct btusb_data *data = hci_get_drvdata(hdev);
4140         struct sk_buff *skb;
4141         struct urb *urb;
4142         unsigned int pipe;
4143
4144         if (!data->diag_tx_ep)
4145                 return ERR_PTR(-ENODEV);
4146
4147         urb = usb_alloc_urb(0, GFP_KERNEL);
4148         if (!urb)
4149                 return ERR_PTR(-ENOMEM);
4150
4151         skb = bt_skb_alloc(2, GFP_KERNEL);
4152         if (!skb) {
4153                 usb_free_urb(urb);
4154                 return ERR_PTR(-ENOMEM);
4155         }
4156
4157         skb_put_u8(skb, 0xf0);
4158         skb_put_u8(skb, enable);
4159
4160         pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress);
4161
4162         usb_fill_bulk_urb(urb, data->udev, pipe,
4163                           skb->data, skb->len, btusb_tx_complete, skb);
4164
4165         skb->dev = (void *)hdev;
4166
4167         return urb;
4168 }
4169
4170 static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable)
4171 {
4172         struct btusb_data *data = hci_get_drvdata(hdev);
4173         struct urb *urb;
4174
4175         if (!data->diag)
4176                 return -ENODEV;
4177
4178         if (!test_bit(HCI_RUNNING, &hdev->flags))
4179                 return -ENETDOWN;
4180
4181         urb = alloc_diag_urb(hdev, enable);
4182         if (IS_ERR(urb))
4183                 return PTR_ERR(urb);
4184
4185         return submit_or_queue_tx_urb(hdev, urb);
4186 }
4187
4188 #ifdef CONFIG_PM
4189 static irqreturn_t btusb_oob_wake_handler(int irq, void *priv)
4190 {
4191         struct btusb_data *data = priv;
4192
4193         pm_wakeup_event(&data->udev->dev, 0);
4194         pm_system_wakeup();
4195
4196         /* Disable only if not already disabled (keep it balanced) */
4197         if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
4198                 disable_irq_nosync(irq);
4199                 disable_irq_wake(irq);
4200         }
4201         return IRQ_HANDLED;
4202 }
4203
4204 static const struct of_device_id btusb_match_table[] = {
4205         { .compatible = "usb1286,204e" },
4206         { .compatible = "usbcf3,e300" }, /* QCA6174A */
4207         { .compatible = "usb4ca,301a" }, /* QCA6174A (Lite-On) */
4208         { }
4209 };
4210 MODULE_DEVICE_TABLE(of, btusb_match_table);
4211
4212 /* Use an oob wakeup pin? */
4213 static int btusb_config_oob_wake(struct hci_dev *hdev)
4214 {
4215         struct btusb_data *data = hci_get_drvdata(hdev);
4216         struct device *dev = &data->udev->dev;
4217         int irq, ret;
4218
4219         clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
4220
4221         if (!of_match_device(btusb_match_table, dev))
4222                 return 0;
4223
4224         /* Move on if no IRQ specified */
4225         irq = of_irq_get_byname(dev->of_node, "wakeup");
4226         if (irq <= 0) {
4227                 bt_dev_dbg(hdev, "%s: no OOB Wakeup IRQ in DT", __func__);
4228                 return 0;
4229         }
4230
4231         irq_set_status_flags(irq, IRQ_NOAUTOEN);
4232         ret = devm_request_irq(&hdev->dev, irq, btusb_oob_wake_handler,
4233                                0, "OOB Wake-on-BT", data);
4234         if (ret) {
4235                 bt_dev_err(hdev, "%s: IRQ request failed", __func__);
4236                 return ret;
4237         }
4238
4239         ret = device_init_wakeup(dev, true);
4240         if (ret) {
4241                 bt_dev_err(hdev, "%s: failed to init_wakeup", __func__);
4242                 return ret;
4243         }
4244
4245         data->oob_wake_irq = irq;
4246         bt_dev_info(hdev, "OOB Wake-on-BT configured at IRQ %u", irq);
4247         return 0;
4248 }
4249 #endif
4250
4251 static void btusb_check_needs_reset_resume(struct usb_interface *intf)
4252 {
4253         if (dmi_check_system(btusb_needs_reset_resume_table))
4254                 interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME;
4255 }
4256
4257 static bool btusb_prevent_wake(struct hci_dev *hdev)
4258 {
4259         struct btusb_data *data = hci_get_drvdata(hdev);
4260
4261         if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags))
4262                 return true;
4263
4264         return !device_may_wakeup(&data->udev->dev);
4265 }
4266
4267 static int btusb_probe(struct usb_interface *intf,
4268                        const struct usb_device_id *id)
4269 {
4270         struct usb_endpoint_descriptor *ep_desc;
4271         struct gpio_desc *reset_gpio;
4272         struct btusb_data *data;
4273         struct hci_dev *hdev;
4274         unsigned ifnum_base;
4275         int i, err;
4276
4277         BT_DBG("intf %p id %p", intf, id);
4278
4279         /* interface numbers are hardcoded in the spec */
4280         if (intf->cur_altsetting->desc.bInterfaceNumber != 0) {
4281                 if (!(id->driver_info & BTUSB_IFNUM_2))
4282                         return -ENODEV;
4283                 if (intf->cur_altsetting->desc.bInterfaceNumber != 2)
4284                         return -ENODEV;
4285         }
4286
4287         ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber;
4288
4289         if (!id->driver_info) {
4290                 const struct usb_device_id *match;
4291
4292                 match = usb_match_id(intf, blacklist_table);
4293                 if (match)
4294                         id = match;
4295         }
4296
4297         if (id->driver_info == BTUSB_IGNORE)
4298                 return -ENODEV;
4299
4300         if (id->driver_info & BTUSB_ATH3012) {
4301                 struct usb_device *udev = interface_to_usbdev(intf);
4302
4303                 /* Old firmware would otherwise let ath3k driver load
4304                  * patch and sysconfig files
4305                  */
4306                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001 &&
4307                     !btusb_qca_need_patch(udev))
4308                         return -ENODEV;
4309         }
4310
4311         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
4312         if (!data)
4313                 return -ENOMEM;
4314
4315         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
4316                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
4317
4318                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
4319                         data->intr_ep = ep_desc;
4320                         continue;
4321                 }
4322
4323                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
4324                         data->bulk_tx_ep = ep_desc;
4325                         continue;
4326                 }
4327
4328                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
4329                         data->bulk_rx_ep = ep_desc;
4330                         continue;
4331                 }
4332         }
4333
4334         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
4335                 return -ENODEV;
4336
4337         if (id->driver_info & BTUSB_AMP) {
4338                 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
4339                 data->cmdreq = 0x2b;
4340         } else {
4341                 data->cmdreq_type = USB_TYPE_CLASS;
4342                 data->cmdreq = 0x00;
4343         }
4344
4345         data->udev = interface_to_usbdev(intf);
4346         data->intf = intf;
4347
4348         INIT_WORK(&data->work, btusb_work);
4349         INIT_WORK(&data->waker, btusb_waker);
4350         init_usb_anchor(&data->deferred);
4351         init_usb_anchor(&data->tx_anchor);
4352         spin_lock_init(&data->txlock);
4353
4354         init_usb_anchor(&data->intr_anchor);
4355         init_usb_anchor(&data->bulk_anchor);
4356         init_usb_anchor(&data->isoc_anchor);
4357         init_usb_anchor(&data->diag_anchor);
4358         init_usb_anchor(&data->ctrl_anchor);
4359         spin_lock_init(&data->rxlock);
4360
4361         if (id->driver_info & BTUSB_INTEL_NEW) {
4362                 data->recv_event = btusb_recv_event_intel;
4363                 data->recv_bulk = btusb_recv_bulk_intel;
4364                 set_bit(BTUSB_BOOTLOADER, &data->flags);
4365         } else {
4366                 data->recv_event = hci_recv_frame;
4367                 data->recv_bulk = btusb_recv_bulk;
4368         }
4369
4370         hdev = hci_alloc_dev();
4371         if (!hdev)
4372                 return -ENOMEM;
4373
4374         hdev->bus = HCI_USB;
4375         hci_set_drvdata(hdev, data);
4376
4377         if (id->driver_info & BTUSB_AMP)
4378                 hdev->dev_type = HCI_AMP;
4379         else
4380                 hdev->dev_type = HCI_PRIMARY;
4381
4382         data->hdev = hdev;
4383
4384         SET_HCIDEV_DEV(hdev, &intf->dev);
4385
4386         reset_gpio = gpiod_get_optional(&data->udev->dev, "reset",
4387                                         GPIOD_OUT_LOW);
4388         if (IS_ERR(reset_gpio)) {
4389                 err = PTR_ERR(reset_gpio);
4390                 goto out_free_dev;
4391         } else if (reset_gpio) {
4392                 data->reset_gpio = reset_gpio;
4393         }
4394
4395         hdev->open   = btusb_open;
4396         hdev->close  = btusb_close;
4397         hdev->flush  = btusb_flush;
4398         hdev->send   = btusb_send_frame;
4399         hdev->notify = btusb_notify;
4400         hdev->prevent_wake = btusb_prevent_wake;
4401
4402 #ifdef CONFIG_PM
4403         err = btusb_config_oob_wake(hdev);
4404         if (err)
4405                 goto out_free_dev;
4406
4407         /* Marvell devices may need a specific chip configuration */
4408         if (id->driver_info & BTUSB_MARVELL && data->oob_wake_irq) {
4409                 err = marvell_config_oob_wake(hdev);
4410                 if (err)
4411                         goto out_free_dev;
4412         }
4413 #endif
4414         if (id->driver_info & BTUSB_CW6622)
4415                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
4416
4417         if (id->driver_info & BTUSB_BCM2045)
4418                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
4419
4420         if (id->driver_info & BTUSB_BCM92035)
4421                 hdev->setup = btusb_setup_bcm92035;
4422
4423         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) &&
4424             (id->driver_info & BTUSB_BCM_PATCHRAM)) {
4425                 hdev->manufacturer = 15;
4426                 hdev->setup = btbcm_setup_patchram;
4427                 hdev->set_diag = btusb_bcm_set_diag;
4428                 hdev->set_bdaddr = btbcm_set_bdaddr;
4429
4430                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
4431                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
4432         }
4433
4434         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) &&
4435             (id->driver_info & BTUSB_BCM_APPLE)) {
4436                 hdev->manufacturer = 15;
4437                 hdev->setup = btbcm_setup_apple;
4438                 hdev->set_diag = btusb_bcm_set_diag;
4439
4440                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
4441                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
4442         }
4443
4444         if (id->driver_info & BTUSB_INTEL) {
4445                 hdev->manufacturer = 2;
4446                 hdev->setup = btusb_setup_intel;
4447                 hdev->shutdown = btusb_shutdown_intel;
4448                 hdev->set_diag = btintel_set_diag_mfg;
4449                 hdev->set_bdaddr = btintel_set_bdaddr;
4450                 hdev->cmd_timeout = btusb_intel_cmd_timeout;
4451                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
4452                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4453                 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
4454         }
4455
4456         if (id->driver_info & BTUSB_INTEL_NEW) {
4457                 hdev->manufacturer = 2;
4458                 hdev->send = btusb_send_frame_intel;
4459                 hdev->setup = btusb_setup_intel_new;
4460                 hdev->shutdown = btusb_shutdown_intel_new;
4461                 hdev->hw_error = btintel_hw_error;
4462                 hdev->set_diag = btintel_set_diag;
4463                 hdev->set_bdaddr = btintel_set_bdaddr;
4464                 hdev->cmd_timeout = btusb_intel_cmd_timeout;
4465                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
4466                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4467                 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
4468         }
4469
4470         if (id->driver_info & BTUSB_INTEL_NEWGEN) {
4471                 hdev->manufacturer = 2;
4472                 hdev->send = btusb_send_frame_intel;
4473                 hdev->setup = btusb_setup_intel_newgen;
4474                 hdev->shutdown = btusb_shutdown_intel_new;
4475                 hdev->hw_error = btintel_hw_error;
4476                 hdev->set_diag = btintel_set_diag;
4477                 hdev->set_bdaddr = btintel_set_bdaddr;
4478                 hdev->cmd_timeout = btusb_intel_cmd_timeout;
4479                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
4480                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4481                 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
4482
4483                 data->recv_event = btusb_recv_event_intel;
4484                 data->recv_bulk = btusb_recv_bulk_intel;
4485                 set_bit(BTUSB_BOOTLOADER, &data->flags);
4486         }
4487
4488         if (id->driver_info & BTUSB_MARVELL)
4489                 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
4490
4491         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_MTK) &&
4492             (id->driver_info & BTUSB_MEDIATEK)) {
4493                 hdev->setup = btusb_mtk_setup;
4494                 hdev->shutdown = btusb_mtk_shutdown;
4495                 hdev->manufacturer = 70;
4496                 set_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks);
4497         }
4498
4499         if (id->driver_info & BTUSB_SWAVE) {
4500                 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
4501                 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
4502         }
4503
4504         if (id->driver_info & BTUSB_INTEL_BOOT) {
4505                 hdev->manufacturer = 2;
4506                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
4507         }
4508
4509         if (id->driver_info & BTUSB_ATH3012) {
4510                 data->setup_on_usb = btusb_setup_qca;
4511                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
4512                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4513                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
4514         }
4515
4516         if (id->driver_info & BTUSB_QCA_ROME) {
4517                 data->setup_on_usb = btusb_setup_qca;
4518                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
4519                 hdev->cmd_timeout = btusb_qca_cmd_timeout;
4520                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4521                 btusb_check_needs_reset_resume(intf);
4522         }
4523
4524         if (id->driver_info & BTUSB_QCA_WCN6855) {
4525                 data->setup_on_usb = btusb_setup_qca;
4526                 hdev->set_bdaddr = btusb_set_bdaddr_wcn6855;
4527                 hdev->cmd_timeout = btusb_qca_cmd_timeout;
4528                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4529         }
4530
4531         if (id->driver_info & BTUSB_AMP) {
4532                 /* AMP controllers do not support SCO packets */
4533                 data->isoc = NULL;
4534         } else {
4535                 /* Interface orders are hardcoded in the specification */
4536                 data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1);
4537                 data->isoc_ifnum = ifnum_base + 1;
4538         }
4539
4540         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_RTL) &&
4541             (id->driver_info & BTUSB_REALTEK)) {
4542                 hdev->setup = btrtl_setup_realtek;
4543                 hdev->shutdown = btrtl_shutdown_realtek;
4544                 hdev->cmd_timeout = btusb_rtl_cmd_timeout;
4545
4546                 /* Realtek devices lose their updated firmware over global
4547                  * suspend that means host doesn't send SET_FEATURE
4548                  * (DEVICE_REMOTE_WAKEUP)
4549                  */
4550                 set_bit(BTUSB_WAKEUP_DISABLE, &data->flags);
4551                 if (btusb_find_altsetting(data, 1))
4552                         set_bit(BTUSB_USE_ALT1_FOR_WBS, &data->flags);
4553                 else
4554                         bt_dev_err(hdev, "Device does not support ALT setting 1");
4555         }
4556
4557         if (!reset)
4558                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
4559
4560         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
4561                 if (!disable_scofix)
4562                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
4563         }
4564
4565         if (id->driver_info & BTUSB_BROKEN_ISOC)
4566                 data->isoc = NULL;
4567
4568         if (id->driver_info & BTUSB_WIDEBAND_SPEECH)
4569                 set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED, &hdev->quirks);
4570
4571         if (id->driver_info & BTUSB_VALID_LE_STATES)
4572                 set_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks);
4573
4574         if (id->driver_info & BTUSB_DIGIANSWER) {
4575                 data->cmdreq_type = USB_TYPE_VENDOR;
4576                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
4577         }
4578
4579         if (id->driver_info & BTUSB_CSR) {
4580                 struct usb_device *udev = data->udev;
4581                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
4582
4583                 /* Old firmware would otherwise execute USB reset */
4584                 if (bcdDevice < 0x117)
4585                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
4586
4587                 /* This must be set first in case we disable it for fakes */
4588                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4589
4590                 /* Fake CSR devices with broken commands */
4591                 if (le16_to_cpu(udev->descriptor.idVendor)  == 0x0a12 &&
4592                     le16_to_cpu(udev->descriptor.idProduct) == 0x0001)
4593                         hdev->setup = btusb_setup_csr;
4594         }
4595
4596         if (id->driver_info & BTUSB_SNIFFER) {
4597                 struct usb_device *udev = data->udev;
4598
4599                 /* New sniffer firmware has crippled HCI interface */
4600                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
4601                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
4602         }
4603
4604         if (id->driver_info & BTUSB_INTEL_BOOT) {
4605                 /* A bug in the bootloader causes that interrupt interface is
4606                  * only enabled after receiving SetInterface(0, AltSetting=0).
4607                  */
4608                 err = usb_set_interface(data->udev, 0, 0);
4609                 if (err < 0) {
4610                         BT_ERR("failed to set interface 0, alt 0 %d", err);
4611                         goto out_free_dev;
4612                 }
4613         }
4614
4615         if (data->isoc) {
4616                 err = usb_driver_claim_interface(&btusb_driver,
4617                                                  data->isoc, data);
4618                 if (err < 0)
4619                         goto out_free_dev;
4620         }
4621
4622         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) && data->diag) {
4623                 if (!usb_driver_claim_interface(&btusb_driver,
4624                                                 data->diag, data))
4625                         __set_diag_interface(hdev);
4626                 else
4627                         data->diag = NULL;
4628         }
4629
4630         if (enable_autosuspend)
4631                 usb_enable_autosuspend(data->udev);
4632
4633         err = hci_register_dev(hdev);
4634         if (err < 0)
4635                 goto out_free_dev;
4636
4637         usb_set_intfdata(intf, data);
4638
4639         return 0;
4640
4641 out_free_dev:
4642         if (data->reset_gpio)
4643                 gpiod_put(data->reset_gpio);
4644         hci_free_dev(hdev);
4645         return err;
4646 }
4647
4648 static void btusb_disconnect(struct usb_interface *intf)
4649 {
4650         struct btusb_data *data = usb_get_intfdata(intf);
4651         struct hci_dev *hdev;
4652
4653         BT_DBG("intf %p", intf);
4654
4655         if (!data)
4656                 return;
4657
4658         hdev = data->hdev;
4659         usb_set_intfdata(data->intf, NULL);
4660
4661         if (data->isoc)
4662                 usb_set_intfdata(data->isoc, NULL);
4663
4664         if (data->diag)
4665                 usb_set_intfdata(data->diag, NULL);
4666
4667         hci_unregister_dev(hdev);
4668
4669         if (intf == data->intf) {
4670                 if (data->isoc)
4671                         usb_driver_release_interface(&btusb_driver, data->isoc);
4672                 if (data->diag)
4673                         usb_driver_release_interface(&btusb_driver, data->diag);
4674         } else if (intf == data->isoc) {
4675                 if (data->diag)
4676                         usb_driver_release_interface(&btusb_driver, data->diag);
4677                 usb_driver_release_interface(&btusb_driver, data->intf);
4678         } else if (intf == data->diag) {
4679                 usb_driver_release_interface(&btusb_driver, data->intf);
4680                 if (data->isoc)
4681                         usb_driver_release_interface(&btusb_driver, data->isoc);
4682         }
4683
4684         if (data->oob_wake_irq)
4685                 device_init_wakeup(&data->udev->dev, false);
4686
4687         if (data->reset_gpio)
4688                 gpiod_put(data->reset_gpio);
4689
4690         hci_free_dev(hdev);
4691 }
4692
4693 #ifdef CONFIG_PM
4694 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
4695 {
4696         struct btusb_data *data = usb_get_intfdata(intf);
4697
4698         BT_DBG("intf %p", intf);
4699
4700         if (data->suspend_count++)
4701                 return 0;
4702
4703         spin_lock_irq(&data->txlock);
4704         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
4705                 set_bit(BTUSB_SUSPENDING, &data->flags);
4706                 spin_unlock_irq(&data->txlock);
4707         } else {
4708                 spin_unlock_irq(&data->txlock);
4709                 data->suspend_count--;
4710                 return -EBUSY;
4711         }
4712
4713         cancel_work_sync(&data->work);
4714
4715         btusb_stop_traffic(data);
4716         usb_kill_anchored_urbs(&data->tx_anchor);
4717
4718         if (data->oob_wake_irq && device_may_wakeup(&data->udev->dev)) {
4719                 set_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
4720                 enable_irq_wake(data->oob_wake_irq);
4721                 enable_irq(data->oob_wake_irq);
4722         }
4723
4724         /* For global suspend, Realtek devices lose the loaded fw
4725          * in them. But for autosuspend, firmware should remain.
4726          * Actually, it depends on whether the usb host sends
4727          * set feature (enable wakeup) or not.
4728          */
4729         if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags)) {
4730                 if (PMSG_IS_AUTO(message) &&
4731                     device_can_wakeup(&data->udev->dev))
4732                         data->udev->do_remote_wakeup = 1;
4733                 else if (!PMSG_IS_AUTO(message))
4734                         data->udev->reset_resume = 1;
4735         }
4736
4737         return 0;
4738 }
4739
4740 static void play_deferred(struct btusb_data *data)
4741 {
4742         struct urb *urb;
4743         int err;
4744
4745         while ((urb = usb_get_from_anchor(&data->deferred))) {
4746                 usb_anchor_urb(urb, &data->tx_anchor);
4747
4748                 err = usb_submit_urb(urb, GFP_ATOMIC);
4749                 if (err < 0) {
4750                         if (err != -EPERM && err != -ENODEV)
4751                                 BT_ERR("%s urb %p submission failed (%d)",
4752                                        data->hdev->name, urb, -err);
4753                         kfree(urb->setup_packet);
4754                         usb_unanchor_urb(urb);
4755                         usb_free_urb(urb);
4756                         break;
4757                 }
4758
4759                 data->tx_in_flight++;
4760                 usb_free_urb(urb);
4761         }
4762
4763         /* Cleanup the rest deferred urbs. */
4764         while ((urb = usb_get_from_anchor(&data->deferred))) {
4765                 kfree(urb->setup_packet);
4766                 usb_free_urb(urb);
4767         }
4768 }
4769
4770 static int btusb_resume(struct usb_interface *intf)
4771 {
4772         struct btusb_data *data = usb_get_intfdata(intf);
4773         struct hci_dev *hdev = data->hdev;
4774         int err = 0;
4775
4776         BT_DBG("intf %p", intf);
4777
4778         if (--data->suspend_count)
4779                 return 0;
4780
4781         /* Disable only if not already disabled (keep it balanced) */
4782         if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
4783                 disable_irq(data->oob_wake_irq);
4784                 disable_irq_wake(data->oob_wake_irq);
4785         }
4786
4787         if (!test_bit(HCI_RUNNING, &hdev->flags))
4788                 goto done;
4789
4790         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
4791                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
4792                 if (err < 0) {
4793                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
4794                         goto failed;
4795                 }
4796         }
4797
4798         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
4799                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
4800                 if (err < 0) {
4801                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
4802                         goto failed;
4803                 }
4804
4805                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
4806         }
4807
4808         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
4809                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
4810                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
4811                 else
4812                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
4813         }
4814
4815         spin_lock_irq(&data->txlock);
4816         play_deferred(data);
4817         clear_bit(BTUSB_SUSPENDING, &data->flags);
4818         spin_unlock_irq(&data->txlock);
4819         schedule_work(&data->work);
4820
4821         return 0;
4822
4823 failed:
4824         usb_scuttle_anchored_urbs(&data->deferred);
4825 done:
4826         spin_lock_irq(&data->txlock);
4827         clear_bit(BTUSB_SUSPENDING, &data->flags);
4828         spin_unlock_irq(&data->txlock);
4829
4830         return err;
4831 }
4832 #endif
4833
4834 static struct usb_driver btusb_driver = {
4835         .name           = "btusb",
4836         .probe          = btusb_probe,
4837         .disconnect     = btusb_disconnect,
4838 #ifdef CONFIG_PM
4839         .suspend        = btusb_suspend,
4840         .resume         = btusb_resume,
4841 #endif
4842         .id_table       = btusb_table,
4843         .supports_autosuspend = 1,
4844         .disable_hub_initiated_lpm = 1,
4845 };
4846
4847 module_usb_driver(btusb_driver);
4848
4849 module_param(disable_scofix, bool, 0644);
4850 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
4851
4852 module_param(force_scofix, bool, 0644);
4853 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
4854
4855 module_param(enable_autosuspend, bool, 0644);
4856 MODULE_PARM_DESC(enable_autosuspend, "Enable USB autosuspend by default");
4857
4858 module_param(reset, bool, 0644);
4859 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
4860
4861 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
4862 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
4863 MODULE_VERSION(VERSION);
4864 MODULE_LICENSE("GPL");