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 <linux/debugfs.h>
  20 #include <asm/unaligned.h>
  21
  22 #include <net/bluetooth/bluetooth.h>
  23 #include <net/bluetooth/hci_core.h>
  24
  25 #include "btintel.h"
  26 #include "btbcm.h"
  27 #include "btrtl.h"
  28 #include "btmtk.h"
  29
  30 #define VERSION "0.8"
  31
  32 static bool disable_scofix;
  33 static bool force_scofix;
  34 static bool enable_autosuspend = IS_ENABLED(CONFIG_BT_HCIBTUSB_AUTOSUSPEND);
  35 static bool reset = true;
  36
  37 static struct usb_driver btusb_driver;
  38
  39 #define BTUSB_IGNORE                    BIT(0)
  40 #define BTUSB_DIGIANSWER                BIT(1)
  41 #define BTUSB_CSR                       BIT(2)
  42 #define BTUSB_SNIFFER                   BIT(3)
  43 #define BTUSB_BCM92035                  BIT(4)
  44 #define BTUSB_BROKEN_ISOC               BIT(5)
  45 #define BTUSB_WRONG_SCO_MTU             BIT(6)
  46 #define BTUSB_ATH3012                   BIT(7)
  47 #define BTUSB_INTEL_COMBINED            BIT(8)
  48 #define BTUSB_INTEL_BOOT                BIT(9)
  49 #define BTUSB_BCM_PATCHRAM              BIT(10)
  50 #define BTUSB_MARVELL                   BIT(11)
  51 #define BTUSB_SWAVE                     BIT(12)
  52 #define BTUSB_AMP                       BIT(13)
  53 #define BTUSB_QCA_ROME                  BIT(14)
  54 #define BTUSB_BCM_APPLE                 BIT(15)
  55 #define BTUSB_REALTEK                   BIT(16)
  56 #define BTUSB_BCM2045                   BIT(17)
  57 #define BTUSB_IFNUM_2                   BIT(18)
  58 #define BTUSB_CW6622                    BIT(19)
  59 #define BTUSB_MEDIATEK                  BIT(20)
  60 #define BTUSB_WIDEBAND_SPEECH           BIT(21)
  61 #define BTUSB_VALID_LE_STATES           BIT(22)
  62 #define BTUSB_QCA_WCN6855               BIT(23)
  63 #define BTUSB_INTEL_BROKEN_SHUTDOWN_LED BIT(24)
  64 #define BTUSB_INTEL_BROKEN_INITIAL_NCMD BIT(25)
  65 #define BTUSB_INTEL_NO_WBS_SUPPORT      BIT(26)
  66
  67 static const struct usb_device_id btusb_table[] = {
  68         /* Generic Bluetooth USB device */
  69         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  70
  71         /* Generic Bluetooth AMP device */
  72         { USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP },
  73
  74         /* Generic Bluetooth USB interface */
  75         { USB_INTERFACE_INFO(0xe0, 0x01, 0x01) },
  76
  77         /* Apple-specific (Broadcom) devices */
  78         { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01),
  79           .driver_info = BTUSB_BCM_APPLE | BTUSB_IFNUM_2 },
  80
  81         /* MediaTek MT76x0E */
  82         { USB_DEVICE(0x0e8d, 0x763f) },
  83
  84         /* Broadcom SoftSailing reporting vendor specific */
  85         { USB_DEVICE(0x0a5c, 0x21e1) },
  86
  87         /* Apple MacBookPro 7,1 */
  88         { USB_DEVICE(0x05ac, 0x8213) },
  89
  90         /* Apple iMac11,1 */
  91         { USB_DEVICE(0x05ac, 0x8215) },
  92
  93         /* Apple MacBookPro6,2 */
  94         { USB_DEVICE(0x05ac, 0x8218) },
  95
  96         /* Apple MacBookAir3,1, MacBookAir3,2 */
  97         { USB_DEVICE(0x05ac, 0x821b) },
  98
  99         /* Apple MacBookAir4,1 */
 100         { USB_DEVICE(0x05ac, 0x821f) },
 101
 102         /* Apple MacBookPro8,2 */
 103         { USB_DEVICE(0x05ac, 0x821a) },
 104
 105         /* Apple MacMini5,1 */
 106         { USB_DEVICE(0x05ac, 0x8281) },
 107
 108         /* AVM BlueFRITZ! USB v2.0 */
 109         { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE },
 110
 111         /* Bluetooth Ultraport Module from IBM */
 112         { USB_DEVICE(0x04bf, 0x030a) },
 113
 114         /* ALPS Modules with non-standard id */
 115         { USB_DEVICE(0x044e, 0x3001) },
 116         { USB_DEVICE(0x044e, 0x3002) },
 117
 118         /* Ericsson with non-standard id */
 119         { USB_DEVICE(0x0bdb, 0x1002) },
 120
 121         /* Canyon CN-BTU1 with HID interfaces */
 122         { USB_DEVICE(0x0c10, 0x0000) },
 123
 124         /* Broadcom BCM20702B0 (Dynex/Insignia) */
 125         { USB_DEVICE(0x19ff, 0x0239), .driver_info = BTUSB_BCM_PATCHRAM },
 126
 127         /* Broadcom BCM43142A0 (Foxconn/Lenovo) */
 128         { USB_VENDOR_AND_INTERFACE_INFO(0x105b, 0xff, 0x01, 0x01),
 129           .driver_info = BTUSB_BCM_PATCHRAM },
 130
 131         /* Broadcom BCM920703 (HTC Vive) */
 132         { USB_VENDOR_AND_INTERFACE_INFO(0x0bb4, 0xff, 0x01, 0x01),
 133           .driver_info = BTUSB_BCM_PATCHRAM },
 134
 135         /* Foxconn - Hon Hai */
 136         { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01),
 137           .driver_info = BTUSB_BCM_PATCHRAM },
 138
 139         /* Lite-On Technology - Broadcom based */
 140         { USB_VENDOR_AND_INTERFACE_INFO(0x04ca, 0xff, 0x01, 0x01),
 141           .driver_info = BTUSB_BCM_PATCHRAM },
 142
 143         /* Broadcom devices with vendor specific id */
 144         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
 145           .driver_info = BTUSB_BCM_PATCHRAM },
 146
 147         /* ASUSTek Computer - Broadcom based */
 148         { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01),
 149           .driver_info = BTUSB_BCM_PATCHRAM },
 150
 151         /* Belkin F8065bf - Broadcom based */
 152         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01),
 153           .driver_info = BTUSB_BCM_PATCHRAM },
 154
 155         /* IMC Networks - Broadcom based */
 156         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01),
 157           .driver_info = BTUSB_BCM_PATCHRAM },
 158
 159         /* Dell Computer - Broadcom based  */
 160         { USB_VENDOR_AND_INTERFACE_INFO(0x413c, 0xff, 0x01, 0x01),
 161           .driver_info = BTUSB_BCM_PATCHRAM },
 162
 163         /* Toshiba Corp - Broadcom based */
 164         { USB_VENDOR_AND_INTERFACE_INFO(0x0930, 0xff, 0x01, 0x01),
 165           .driver_info = BTUSB_BCM_PATCHRAM },
 166
 167         /* Intel Bluetooth USB Bootloader (RAM module) */
 168         { USB_DEVICE(0x8087, 0x0a5a),
 169           .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
 170
 171         { }     /* Terminating entry */
 172 };
 173
 174 MODULE_DEVICE_TABLE(usb, btusb_table);
 175
 176 static const struct usb_device_id blacklist_table[] = {
 177         /* CSR BlueCore devices */
 178         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 179
 180         /* Broadcom BCM2033 without firmware */
 181         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 182
 183         /* Broadcom BCM2045 devices */
 184         { USB_DEVICE(0x0a5c, 0x2045), .driver_info = BTUSB_BCM2045 },
 185
 186         /* Atheros 3011 with sflash firmware */
 187         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 188         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 189         { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE },
 190         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 191         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 192         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 193         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 194
 195         /* Atheros AR9285 Malbec with sflash firmware */
 196         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 197
 198         /* Atheros 3012 with sflash firmware */
 199         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 200         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 201         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 202         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 203         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 204         { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
 205         { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
 206         { USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 },
 207         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 208         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 209         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 210         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 211         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 212         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 213         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 214         { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
 215         { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
 216         { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
 217         { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 },
 218         { USB_DEVICE(0x04ca, 0x3018), .driver_info = BTUSB_ATH3012 },
 219         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 220         { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
 221         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 222         { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
 223         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 224         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 225         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 226         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 227         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 228         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
 229         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 230         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 231         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 232         { USB_DEVICE(0x0cf3, 0x817b), .driver_info = BTUSB_ATH3012 },
 233         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 234         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 235         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 236         { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 },
 237         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 238         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 239         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 240         { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 },
 241         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 242         { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
 243         { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
 244         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
 245         { USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 },
 246         { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
 247         { USB_DEVICE(0x13d3, 0x3487), .driver_info = BTUSB_ATH3012 },
 248         { USB_DEVICE(0x13d3, 0x3490), .driver_info = BTUSB_ATH3012 },
 249
 250         /* Atheros AR5BBU12 with sflash firmware */
 251         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 252
 253         /* Atheros AR5BBU12 with sflash firmware */
 254         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 255         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 256
 257         /* QCA ROME chipset */
 258         { USB_DEVICE(0x0cf3, 0x535b), .driver_info = BTUSB_QCA_ROME |
 259                                                      BTUSB_WIDEBAND_SPEECH },
 260         { USB_DEVICE(0x0cf3, 0xe007), .driver_info = BTUSB_QCA_ROME |
 261                                                      BTUSB_WIDEBAND_SPEECH },
 262         { USB_DEVICE(0x0cf3, 0xe009), .driver_info = BTUSB_QCA_ROME |
 263                                                      BTUSB_WIDEBAND_SPEECH },
 264         { USB_DEVICE(0x0cf3, 0xe010), .driver_info = BTUSB_QCA_ROME |
 265                                                      BTUSB_WIDEBAND_SPEECH },
 266         { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME |
 267                                                      BTUSB_WIDEBAND_SPEECH },
 268         { USB_DEVICE(0x0cf3, 0xe301), .driver_info = BTUSB_QCA_ROME |
 269                                                      BTUSB_WIDEBAND_SPEECH },
 270         { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME |
 271                                                      BTUSB_WIDEBAND_SPEECH },
 272         { USB_DEVICE(0x0cf3, 0xe500), .driver_info = BTUSB_QCA_ROME |
 273                                                      BTUSB_WIDEBAND_SPEECH },
 274         { USB_DEVICE(0x0489, 0xe092), .driver_info = BTUSB_QCA_ROME |
 275                                                      BTUSB_WIDEBAND_SPEECH },
 276         { USB_DEVICE(0x0489, 0xe09f), .driver_info = BTUSB_QCA_ROME |
 277                                                      BTUSB_WIDEBAND_SPEECH },
 278         { USB_DEVICE(0x0489, 0xe0a2), .driver_info = BTUSB_QCA_ROME |
 279                                                      BTUSB_WIDEBAND_SPEECH },
 280         { USB_DEVICE(0x04ca, 0x3011), .driver_info = BTUSB_QCA_ROME |
 281                                                      BTUSB_WIDEBAND_SPEECH },
 282         { USB_DEVICE(0x04ca, 0x3015), .driver_info = BTUSB_QCA_ROME |
 283                                                      BTUSB_WIDEBAND_SPEECH },
 284         { USB_DEVICE(0x04ca, 0x3016), .driver_info = BTUSB_QCA_ROME |
 285                                                      BTUSB_WIDEBAND_SPEECH },
 286         { USB_DEVICE(0x04ca, 0x301a), .driver_info = BTUSB_QCA_ROME |
 287                                                      BTUSB_WIDEBAND_SPEECH },
 288         { USB_DEVICE(0x04ca, 0x3021), .driver_info = BTUSB_QCA_ROME |
 289                                                      BTUSB_WIDEBAND_SPEECH },
 290         { USB_DEVICE(0x13d3, 0x3491), .driver_info = BTUSB_QCA_ROME |
 291                                                      BTUSB_WIDEBAND_SPEECH },
 292         { USB_DEVICE(0x13d3, 0x3496), .driver_info = BTUSB_QCA_ROME |
 293                                                      BTUSB_WIDEBAND_SPEECH },
 294         { USB_DEVICE(0x13d3, 0x3501), .driver_info = BTUSB_QCA_ROME |
 295                                                      BTUSB_WIDEBAND_SPEECH },
 296
 297         /* QCA WCN6855 chipset */
 298         { USB_DEVICE(0x0cf3, 0xe600), .driver_info = BTUSB_QCA_WCN6855 |
 299                                                      BTUSB_WIDEBAND_SPEECH |
 300                                                      BTUSB_VALID_LE_STATES },
 301         { USB_DEVICE(0x0489, 0xe0cc), .driver_info = BTUSB_QCA_WCN6855 |
 302                                                      BTUSB_WIDEBAND_SPEECH |
 303                                                      BTUSB_VALID_LE_STATES },
 304         { USB_DEVICE(0x0489, 0xe0d6), .driver_info = BTUSB_QCA_WCN6855 |
 305                                                      BTUSB_WIDEBAND_SPEECH |
 306                                                      BTUSB_VALID_LE_STATES },
 307         { USB_DEVICE(0x0489, 0xe0e3), .driver_info = BTUSB_QCA_WCN6855 |
 308                                                      BTUSB_WIDEBAND_SPEECH |
 309                                                      BTUSB_VALID_LE_STATES },
 310         { USB_DEVICE(0x10ab, 0x9309), .driver_info = BTUSB_QCA_WCN6855 |
 311                                                      BTUSB_WIDEBAND_SPEECH |
 312                                                      BTUSB_VALID_LE_STATES },
 313         { USB_DEVICE(0x10ab, 0x9409), .driver_info = BTUSB_QCA_WCN6855 |
 314                                                      BTUSB_WIDEBAND_SPEECH |
 315                                                      BTUSB_VALID_LE_STATES },
 316         { USB_DEVICE(0x0489, 0xe0d0), .driver_info = BTUSB_QCA_WCN6855 |
 317                                                      BTUSB_WIDEBAND_SPEECH |
 318                                                      BTUSB_VALID_LE_STATES },
 319
 320         /* QCA WCN785x chipset */
 321         { USB_DEVICE(0x0cf3, 0xe700), .driver_info = BTUSB_QCA_WCN6855 |
 322                                                      BTUSB_WIDEBAND_SPEECH |
 323                                                      BTUSB_VALID_LE_STATES },
 324
 325         /* Broadcom BCM2035 */
 326         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 327         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 328         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 329
 330         /* Broadcom BCM2045 */
 331         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 332         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 333
 334         /* IBM/Lenovo ThinkPad with Broadcom chip */
 335         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 336         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 337
 338         /* HP laptop with Broadcom chip */
 339         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 340
 341         /* Dell laptop with Broadcom chip */
 342         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 343
 344         /* Dell Wireless 370 and 410 devices */
 345         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 346         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 347
 348         /* Belkin F8T012 and F8T013 devices */
 349         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 350         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 351
 352         /* Asus WL-BTD202 device */
 353         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 354
 355         /* Kensington Bluetooth USB adapter */
 356         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 357
 358         /* RTX Telecom based adapters with buggy SCO support */
 359         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 360         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 361
 362         /* CONWISE Technology based adapters with buggy SCO support */
 363         { USB_DEVICE(0x0e5e, 0x6622),
 364           .driver_info = BTUSB_BROKEN_ISOC | BTUSB_CW6622},
 365
 366         /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
 367         { USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE },
 368
 369         /* Digianswer devices */
 370         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 371         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 372
 373         /* CSR BlueCore Bluetooth Sniffer */
 374         { USB_DEVICE(0x0a12, 0x0002),
 375           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 376
 377         /* Frontline ComProbe Bluetooth Sniffer */
 378         { USB_DEVICE(0x16d3, 0x0002),
 379           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 380
 381         /* Marvell Bluetooth devices */
 382         { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
 383         { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
 384         { USB_DEVICE(0x1286, 0x204e), .driver_info = BTUSB_MARVELL },
 385
 386         /* Intel Bluetooth devices */
 387         { USB_DEVICE(0x8087, 0x0025), .driver_info = BTUSB_INTEL_COMBINED },
 388         { USB_DEVICE(0x8087, 0x0026), .driver_info = BTUSB_INTEL_COMBINED },
 389         { USB_DEVICE(0x8087, 0x0029), .driver_info = BTUSB_INTEL_COMBINED },
 390         { USB_DEVICE(0x8087, 0x0032), .driver_info = BTUSB_INTEL_COMBINED },
 391         { USB_DEVICE(0x8087, 0x0033), .driver_info = BTUSB_INTEL_COMBINED },
 392         { USB_DEVICE(0x8087, 0x0035), .driver_info = BTUSB_INTEL_COMBINED },
 393         { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR },
 394         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL_COMBINED |
 395                                                      BTUSB_INTEL_NO_WBS_SUPPORT |
 396                                                      BTUSB_INTEL_BROKEN_INITIAL_NCMD |
 397                                                      BTUSB_INTEL_BROKEN_SHUTDOWN_LED },
 398         { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL_COMBINED |
 399                                                      BTUSB_INTEL_NO_WBS_SUPPORT |
 400                                                      BTUSB_INTEL_BROKEN_SHUTDOWN_LED },
 401         { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_COMBINED },
 402         { USB_DEVICE(0x8087, 0x0aa7), .driver_info = BTUSB_INTEL_COMBINED |
 403                                                      BTUSB_INTEL_BROKEN_SHUTDOWN_LED },
 404         { USB_DEVICE(0x8087, 0x0aaa), .driver_info = BTUSB_INTEL_COMBINED },
 405
 406         /* Other Intel Bluetooth devices */
 407         { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01),
 408           .driver_info = BTUSB_IGNORE },
 409
 410         /* Realtek 8822CE Bluetooth devices */
 411         { USB_DEVICE(0x0bda, 0xb00c), .driver_info = BTUSB_REALTEK |
 412                                                      BTUSB_WIDEBAND_SPEECH },
 413         { USB_DEVICE(0x0bda, 0xc822), .driver_info = BTUSB_REALTEK |
 414                                                      BTUSB_WIDEBAND_SPEECH },
 415
 416         /* Realtek 8852AE Bluetooth devices */
 417         { USB_DEVICE(0x0bda, 0x2852), .driver_info = BTUSB_REALTEK |
 418                                                      BTUSB_WIDEBAND_SPEECH },
 419         { USB_DEVICE(0x0bda, 0xc852), .driver_info = BTUSB_REALTEK |
 420                                                      BTUSB_WIDEBAND_SPEECH },
 421         { USB_DEVICE(0x0bda, 0x385a), .driver_info = BTUSB_REALTEK |
 422                                                      BTUSB_WIDEBAND_SPEECH },
 423         { USB_DEVICE(0x0bda, 0x4852), .driver_info = BTUSB_REALTEK |
 424                                                      BTUSB_WIDEBAND_SPEECH },
 425         { USB_DEVICE(0x04c5, 0x165c), .driver_info = BTUSB_REALTEK |
 426                                                      BTUSB_WIDEBAND_SPEECH },
 427         { USB_DEVICE(0x04ca, 0x4006), .driver_info = BTUSB_REALTEK |
 428                                                      BTUSB_WIDEBAND_SPEECH },
 429
 430         /* Realtek 8852CE Bluetooth devices */
 431         { USB_DEVICE(0x04ca, 0x4007), .driver_info = BTUSB_REALTEK |
 432                                                      BTUSB_WIDEBAND_SPEECH },
 433         { USB_DEVICE(0x04c5, 0x1675), .driver_info = BTUSB_REALTEK |
 434                                                      BTUSB_WIDEBAND_SPEECH },
 435         { USB_DEVICE(0x0cb8, 0xc558), .driver_info = BTUSB_REALTEK |
 436                                                      BTUSB_WIDEBAND_SPEECH },
 437         { USB_DEVICE(0x13d3, 0x3587), .driver_info = BTUSB_REALTEK |
 438                                                      BTUSB_WIDEBAND_SPEECH },
 439         { USB_DEVICE(0x13d3, 0x3586), .driver_info = BTUSB_REALTEK |
 440                                                      BTUSB_WIDEBAND_SPEECH },
 441
 442         /* Realtek Bluetooth devices */
 443         { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01),
 444           .driver_info = BTUSB_REALTEK },
 445
 446         /* MediaTek Bluetooth devices */
 447         { USB_VENDOR_AND_INTERFACE_INFO(0x0e8d, 0xe0, 0x01, 0x01),
 448           .driver_info = BTUSB_MEDIATEK |
 449                          BTUSB_WIDEBAND_SPEECH |
 450                          BTUSB_VALID_LE_STATES },
 451
 452         /* Additional MediaTek MT7615E Bluetooth devices */
 453         { USB_DEVICE(0x13d3, 0x3560), .driver_info = BTUSB_MEDIATEK},
 454
 455         /* Additional MediaTek MT7663 Bluetooth devices */
 456         { USB_DEVICE(0x043e, 0x310c), .driver_info = BTUSB_MEDIATEK |
 457                                                      BTUSB_WIDEBAND_SPEECH |
 458                                                      BTUSB_VALID_LE_STATES },
 459
 460         /* Additional MediaTek MT7668 Bluetooth devices */
 461         { USB_DEVICE(0x043e, 0x3109), .driver_info = BTUSB_MEDIATEK |
 462                                                      BTUSB_WIDEBAND_SPEECH |
 463                                                      BTUSB_VALID_LE_STATES },
 464
 465         /* Additional MediaTek MT7921 Bluetooth devices */
 466         { USB_DEVICE(0x0489, 0xe0c8), .driver_info = BTUSB_MEDIATEK |
 467                                                      BTUSB_WIDEBAND_SPEECH |
 468                                                      BTUSB_VALID_LE_STATES },
 469         { USB_DEVICE(0x04ca, 0x3802), .driver_info = BTUSB_MEDIATEK |
 470                                                      BTUSB_WIDEBAND_SPEECH |
 471                                                      BTUSB_VALID_LE_STATES },
 472         { USB_DEVICE(0x13d3, 0x3563), .driver_info = BTUSB_MEDIATEK |
 473                                                      BTUSB_WIDEBAND_SPEECH |
 474                                                      BTUSB_VALID_LE_STATES },
 475         { USB_DEVICE(0x13d3, 0x3564), .driver_info = BTUSB_MEDIATEK |
 476                                                      BTUSB_WIDEBAND_SPEECH |
 477                                                      BTUSB_VALID_LE_STATES },
 478         { USB_DEVICE(0x13d3, 0x3567), .driver_info = BTUSB_MEDIATEK |
 479                                                      BTUSB_WIDEBAND_SPEECH |
 480                                                      BTUSB_VALID_LE_STATES },
 481         { USB_DEVICE(0x0489, 0xe0cd), .driver_info = BTUSB_MEDIATEK |
 482                                                      BTUSB_WIDEBAND_SPEECH |
 483                                                      BTUSB_VALID_LE_STATES },
 484
 485         /* MediaTek MT7922A Bluetooth devices */
 486         { USB_DEVICE(0x0489, 0xe0d8), .driver_info = BTUSB_MEDIATEK |
 487                                                      BTUSB_WIDEBAND_SPEECH |
 488                                                      BTUSB_VALID_LE_STATES },
 489         { USB_DEVICE(0x0489, 0xe0d9), .driver_info = BTUSB_MEDIATEK |
 490                                                      BTUSB_WIDEBAND_SPEECH |
 491                                                      BTUSB_VALID_LE_STATES },
 492         { USB_DEVICE(0x13d3, 0x3568), .driver_info = BTUSB_MEDIATEK |
 493                                                      BTUSB_WIDEBAND_SPEECH |
 494                                                      BTUSB_VALID_LE_STATES },
 495         { USB_DEVICE(0x0489, 0xe0e2), .driver_info = BTUSB_MEDIATEK |
 496                                                      BTUSB_WIDEBAND_SPEECH |
 497                                                      BTUSB_VALID_LE_STATES },
 498
 499         /* Additional Realtek 8723AE Bluetooth devices */
 500         { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK },
 501         { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK },
 502
 503         /* Additional Realtek 8723BE Bluetooth devices */
 504         { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK },
 505         { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK },
 506         { USB_DEVICE(0x04f2, 0xb49f), .driver_info = BTUSB_REALTEK },
 507         { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
 508         { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
 509         { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },
 510         { USB_DEVICE(0x13d3, 0x3494), .driver_info = BTUSB_REALTEK },
 511
 512         /* Additional Realtek 8723BU Bluetooth devices */
 513         { USB_DEVICE(0x7392, 0xa611), .driver_info = BTUSB_REALTEK },
 514
 515         /* Additional Realtek 8723DE Bluetooth devices */
 516         { USB_DEVICE(0x0bda, 0xb009), .driver_info = BTUSB_REALTEK },
 517         { USB_DEVICE(0x2ff8, 0xb011), .driver_info = BTUSB_REALTEK },
 518
 519         /* Additional Realtek 8761B Bluetooth devices */
 520         { USB_DEVICE(0x2357, 0x0604), .driver_info = BTUSB_REALTEK |
 521                                                      BTUSB_WIDEBAND_SPEECH },
 522
 523         /* Additional Realtek 8761BU Bluetooth devices */
 524         { USB_DEVICE(0x0b05, 0x190e), .driver_info = BTUSB_REALTEK |
 525                                                      BTUSB_WIDEBAND_SPEECH },
 526         { USB_DEVICE(0x2550, 0x8761), .driver_info = BTUSB_REALTEK |
 527                                                      BTUSB_WIDEBAND_SPEECH },
 528
 529         /* Additional Realtek 8761BUV Bluetooth devices */
 530         { USB_DEVICE(0x0bda, 0x8771), .driver_info = BTUSB_REALTEK |
 531                                                      BTUSB_WIDEBAND_SPEECH },
 532
 533         /* Additional Realtek 8821AE Bluetooth devices */
 534         { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
 535         { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },
 536         { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK },
 537         { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK },
 538         { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK },
 539
 540         /* Additional Realtek 8822BE Bluetooth devices */
 541         { USB_DEVICE(0x13d3, 0x3526), .driver_info = BTUSB_REALTEK },
 542         { USB_DEVICE(0x0b05, 0x185c), .driver_info = BTUSB_REALTEK },
 543
 544         /* Additional Realtek 8822CE Bluetooth devices */
 545         { USB_DEVICE(0x04ca, 0x4005), .driver_info = BTUSB_REALTEK |
 546                                                      BTUSB_WIDEBAND_SPEECH },
 547         { USB_DEVICE(0x04c5, 0x161f), .driver_info = BTUSB_REALTEK |
 548                                                      BTUSB_WIDEBAND_SPEECH },
 549         { USB_DEVICE(0x0b05, 0x18ef), .driver_info = BTUSB_REALTEK |
 550                                                      BTUSB_WIDEBAND_SPEECH },
 551         { USB_DEVICE(0x13d3, 0x3548), .driver_info = BTUSB_REALTEK |
 552                                                      BTUSB_WIDEBAND_SPEECH },
 553         { USB_DEVICE(0x13d3, 0x3549), .driver_info = BTUSB_REALTEK |
 554                                                      BTUSB_WIDEBAND_SPEECH },
 555         { USB_DEVICE(0x13d3, 0x3553), .driver_info = BTUSB_REALTEK |
 556                                                      BTUSB_WIDEBAND_SPEECH },
 557         { USB_DEVICE(0x13d3, 0x3555), .driver_info = BTUSB_REALTEK |
 558                                                      BTUSB_WIDEBAND_SPEECH },
 559         { USB_DEVICE(0x2ff8, 0x3051), .driver_info = BTUSB_REALTEK |
 560                                                      BTUSB_WIDEBAND_SPEECH },
 561         { USB_DEVICE(0x1358, 0xc123), .driver_info = BTUSB_REALTEK |
 562                                                      BTUSB_WIDEBAND_SPEECH },
 563         { USB_DEVICE(0x0bda, 0xc123), .driver_info = BTUSB_REALTEK |
 564                                                      BTUSB_WIDEBAND_SPEECH },
 565         { USB_DEVICE(0x0cb5, 0xc547), .driver_info = BTUSB_REALTEK |
 566                                                      BTUSB_WIDEBAND_SPEECH },
 567
 568         /* Silicon Wave based devices */
 569         { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE },
 570
 571         { }     /* Terminating entry */
 572 };
 573
 574 /* The Bluetooth USB module build into some devices needs to be reset on resume,
 575  * this is a problem with the platform (likely shutting off all power) not with
 576  * the module itself. So we use a DMI list to match known broken platforms.
 577  */
 578 static const struct dmi_system_id btusb_needs_reset_resume_table[] = {
 579         {
 580                 /* Dell OptiPlex 3060 (QCA ROME device 0cf3:e007) */
 581                 .matches = {
 582                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 583                         DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 3060"),
 584                 },
 585         },
 586         {
 587                 /* Dell XPS 9360 (QCA ROME device 0cf3:e300) */
 588                 .matches = {
 589                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 590                         DMI_MATCH(DMI_PRODUCT_NAME, "XPS 13 9360"),
 591                 },
 592         },
 593         {
 594                 /* Dell Inspiron 5565 (QCA ROME device 0cf3:e009) */
 595                 .matches = {
 596                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 597                         DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5565"),
 598                 },
 599         },
 600         {}
 601 };
 602
 603 #define BTUSB_MAX_ISOC_FRAMES   10
 604
 605 #define BTUSB_INTR_RUNNING      0
 606 #define BTUSB_BULK_RUNNING      1
 607 #define BTUSB_ISOC_RUNNING      2
 608 #define BTUSB_SUSPENDING        3
 609 #define BTUSB_DID_ISO_RESUME    4
 610 #define BTUSB_BOOTLOADER        5
 611 #define BTUSB_DOWNLOADING       6
 612 #define BTUSB_FIRMWARE_LOADED   7
 613 #define BTUSB_FIRMWARE_FAILED   8
 614 #define BTUSB_BOOTING           9
 615 #define BTUSB_DIAG_RUNNING      10
 616 #define BTUSB_OOB_WAKE_ENABLED  11
 617 #define BTUSB_HW_RESET_ACTIVE   12
 618 #define BTUSB_TX_WAIT_VND_EVT   13
 619 #define BTUSB_WAKEUP_AUTOSUSPEND        14
 620 #define BTUSB_USE_ALT3_FOR_WBS  15
 621
 622 struct btusb_data {
 623         struct hci_dev       *hdev;
 624         struct usb_device    *udev;
 625         struct usb_interface *intf;
 626         struct usb_interface *isoc;
 627         struct usb_interface *diag;
 628         unsigned isoc_ifnum;
 629
 630         unsigned long flags;
 631
 632         bool poll_sync;
 633         int intr_interval;
 634         struct work_struct  work;
 635         struct work_struct  waker;
 636         struct delayed_work rx_work;
 637
 638         struct sk_buff_head acl_q;
 639
 640         struct usb_anchor deferred;
 641         struct usb_anchor tx_anchor;
 642         int tx_in_flight;
 643         spinlock_t txlock;
 644
 645         struct usb_anchor intr_anchor;
 646         struct usb_anchor bulk_anchor;
 647         struct usb_anchor isoc_anchor;
 648         struct usb_anchor diag_anchor;
 649         struct usb_anchor ctrl_anchor;
 650         spinlock_t rxlock;
 651
 652         struct sk_buff *evt_skb;
 653         struct sk_buff *acl_skb;
 654         struct sk_buff *sco_skb;
 655
 656         struct usb_endpoint_descriptor *intr_ep;
 657         struct usb_endpoint_descriptor *bulk_tx_ep;
 658         struct usb_endpoint_descriptor *bulk_rx_ep;
 659         struct usb_endpoint_descriptor *isoc_tx_ep;
 660         struct usb_endpoint_descriptor *isoc_rx_ep;
 661         struct usb_endpoint_descriptor *diag_tx_ep;
 662         struct usb_endpoint_descriptor *diag_rx_ep;
 663
 664         struct gpio_desc *reset_gpio;
 665
 666         __u8 cmdreq_type;
 667         __u8 cmdreq;
 668
 669         unsigned int sco_num;
 670         unsigned int air_mode;
 671         bool usb_alt6_packet_flow;
 672         int isoc_altsetting;
 673         int suspend_count;
 674
 675         int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
 676         int (*recv_acl)(struct hci_dev *hdev, struct sk_buff *skb);
 677         int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
 678
 679         int (*setup_on_usb)(struct hci_dev *hdev);
 680
 681         int oob_wake_irq;   /* irq for out-of-band wake-on-bt */
 682         unsigned cmd_timeout_cnt;
 683 };
 684
 685 static void btusb_intel_cmd_timeout(struct hci_dev *hdev)
 686 {
 687         struct btusb_data *data = hci_get_drvdata(hdev);
 688         struct gpio_desc *reset_gpio = data->reset_gpio;
 689
 690         if (++data->cmd_timeout_cnt < 5)
 691                 return;
 692
 693         if (!reset_gpio) {
 694                 bt_dev_err(hdev, "No way to reset. Ignoring and continuing");
 695                 return;
 696         }
 697
 698         /*
 699          * Toggle the hard reset line if the platform provides one. The reset
 700          * is going to yank the device off the USB and then replug. So doing
 701          * once is enough. The cleanup is handled correctly on the way out
 702          * (standard USB disconnect), and the new device is detected cleanly
 703          * and bound to the driver again like it should be.
 704          */
 705         if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
 706                 bt_dev_err(hdev, "last reset failed? Not resetting again");
 707                 return;
 708         }
 709
 710         bt_dev_err(hdev, "Initiating HW reset via gpio");
 711         gpiod_set_value_cansleep(reset_gpio, 1);
 712         msleep(100);
 713         gpiod_set_value_cansleep(reset_gpio, 0);
 714 }
 715
 716 static void btusb_rtl_cmd_timeout(struct hci_dev *hdev)
 717 {
 718         struct btusb_data *data = hci_get_drvdata(hdev);
 719         struct gpio_desc *reset_gpio = data->reset_gpio;
 720
 721         if (++data->cmd_timeout_cnt < 5)
 722                 return;
 723
 724         if (!reset_gpio) {
 725                 bt_dev_err(hdev, "No gpio to reset Realtek device, ignoring");
 726                 return;
 727         }
 728
 729         /* Toggle the hard reset line. The Realtek device is going to
 730          * yank itself off the USB and then replug. The cleanup is handled
 731          * correctly on the way out (standard USB disconnect), and the new
 732          * device is detected cleanly and bound to the driver again like
 733          * it should be.
 734          */
 735         if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
 736                 bt_dev_err(hdev, "last reset failed? Not resetting again");
 737                 return;
 738         }
 739
 740         bt_dev_err(hdev, "Reset Realtek device via gpio");
 741         gpiod_set_value_cansleep(reset_gpio, 1);
 742         msleep(200);
 743         gpiod_set_value_cansleep(reset_gpio, 0);
 744 }
 745
 746 static void btusb_qca_cmd_timeout(struct hci_dev *hdev)
 747 {
 748         struct btusb_data *data = hci_get_drvdata(hdev);
 749         struct gpio_desc *reset_gpio = data->reset_gpio;
 750         int err;
 751
 752         if (++data->cmd_timeout_cnt < 5)
 753                 return;
 754
 755         if (reset_gpio) {
 756                 bt_dev_err(hdev, "Reset qca device via bt_en gpio");
 757
 758                 /* Toggle the hard reset line. The qca bt device is going to
 759                  * yank itself off the USB and then replug. The cleanup is handled
 760                  * correctly on the way out (standard USB disconnect), and the new
 761                  * device is detected cleanly and bound to the driver again like
 762                  * it should be.
 763                  */
 764                 if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
 765                         bt_dev_err(hdev, "last reset failed? Not resetting again");
 766                         return;
 767                 }
 768
 769                 gpiod_set_value_cansleep(reset_gpio, 0);
 770                 msleep(200);
 771                 gpiod_set_value_cansleep(reset_gpio, 1);
 772
 773                 return;
 774         }
 775
 776         bt_dev_err(hdev, "Multiple cmd timeouts seen. Resetting usb device.");
 777         /* This is not an unbalanced PM reference since the device will reset */
 778         err = usb_autopm_get_interface(data->intf);
 779         if (!err)
 780                 usb_queue_reset_device(data->intf);
 781         else
 782                 bt_dev_err(hdev, "Failed usb_autopm_get_interface with %d", err);
 783 }
 784
 785 static inline void btusb_free_frags(struct btusb_data *data)
 786 {
 787         unsigned long flags;
 788
 789         spin_lock_irqsave(&data->rxlock, flags);
 790
 791         kfree_skb(data->evt_skb);
 792         data->evt_skb = NULL;
 793
 794         kfree_skb(data->acl_skb);
 795         data->acl_skb = NULL;
 796
 797         kfree_skb(data->sco_skb);
 798         data->sco_skb = NULL;
 799
 800         spin_unlock_irqrestore(&data->rxlock, flags);
 801 }
 802
 803 static int btusb_recv_event(struct btusb_data *data, struct sk_buff *skb)
 804 {
 805         if (data->intr_interval) {
 806                 /* Trigger dequeue immediatelly if an event is received */
 807                 schedule_delayed_work(&data->rx_work, 0);
 808         }
 809
 810         return data->recv_event(data->hdev, skb);
 811 }
 812
 813 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
 814 {
 815         struct sk_buff *skb;
 816         unsigned long flags;
 817         int err = 0;
 818
 819         spin_lock_irqsave(&data->rxlock, flags);
 820         skb = data->evt_skb;
 821
 822         while (count) {
 823                 int len;
 824
 825                 if (!skb) {
 826                         skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
 827                         if (!skb) {
 828                                 err = -ENOMEM;
 829                                 break;
 830                         }
 831
 832                         hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
 833                         hci_skb_expect(skb) = HCI_EVENT_HDR_SIZE;
 834                 }
 835
 836                 len = min_t(uint, hci_skb_expect(skb), count);
 837                 skb_put_data(skb, buffer, len);
 838
 839                 count -= len;
 840                 buffer += len;
 841                 hci_skb_expect(skb) -= len;
 842
 843                 if (skb->len == HCI_EVENT_HDR_SIZE) {
 844                         /* Complete event header */
 845                         hci_skb_expect(skb) = hci_event_hdr(skb)->plen;
 846
 847                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 848                                 kfree_skb(skb);
 849                                 skb = NULL;
 850
 851                                 err = -EILSEQ;
 852                                 break;
 853                         }
 854                 }
 855
 856                 if (!hci_skb_expect(skb)) {
 857                         /* Complete frame */
 858                         btusb_recv_event(data, skb);
 859                         skb = NULL;
 860                 }
 861         }
 862
 863         data->evt_skb = skb;
 864         spin_unlock_irqrestore(&data->rxlock, flags);
 865
 866         return err;
 867 }
 868
 869 static int btusb_recv_acl(struct btusb_data *data, struct sk_buff *skb)
 870 {
 871         /* Only queue ACL packet if intr_interval is set as it means
 872          * force_poll_sync has been enabled.
 873          */
 874         if (!data->intr_interval)
 875                 return data->recv_acl(data->hdev, skb);
 876
 877         skb_queue_tail(&data->acl_q, skb);
 878         schedule_delayed_work(&data->rx_work, data->intr_interval);
 879
 880         return 0;
 881 }
 882
 883 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
 884 {
 885         struct sk_buff *skb;
 886         unsigned long flags;
 887         int err = 0;
 888
 889         spin_lock_irqsave(&data->rxlock, flags);
 890         skb = data->acl_skb;
 891
 892         while (count) {
 893                 int len;
 894
 895                 if (!skb) {
 896                         skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
 897                         if (!skb) {
 898                                 err = -ENOMEM;
 899                                 break;
 900                         }
 901
 902                         hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT;
 903                         hci_skb_expect(skb) = HCI_ACL_HDR_SIZE;
 904                 }
 905
 906                 len = min_t(uint, hci_skb_expect(skb), count);
 907                 skb_put_data(skb, buffer, len);
 908
 909                 count -= len;
 910                 buffer += len;
 911                 hci_skb_expect(skb) -= len;
 912
 913                 if (skb->len == HCI_ACL_HDR_SIZE) {
 914                         __u16 handle = __le16_to_cpu(hci_acl_hdr(skb)->handle);
 915                         __le16 dlen = hci_acl_hdr(skb)->dlen;
 916                         __u8 type;
 917
 918                         /* Complete ACL header */
 919                         hci_skb_expect(skb) = __le16_to_cpu(dlen);
 920
 921                         /* Detect if ISO packet has been sent over bulk */
 922                         if (hci_conn_num(data->hdev, ISO_LINK)) {
 923                                 type = hci_conn_lookup_type(data->hdev,
 924                                                             hci_handle(handle));
 925                                 if (type == ISO_LINK)
 926                                         hci_skb_pkt_type(skb) = HCI_ISODATA_PKT;
 927                         }
 928
 929                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 930                                 kfree_skb(skb);
 931                                 skb = NULL;
 932
 933                                 err = -EILSEQ;
 934                                 break;
 935                         }
 936                 }
 937
 938                 if (!hci_skb_expect(skb)) {
 939                         /* Complete frame */
 940                         btusb_recv_acl(data, skb);
 941                         skb = NULL;
 942                 }
 943         }
 944
 945         data->acl_skb = skb;
 946         spin_unlock_irqrestore(&data->rxlock, flags);
 947
 948         return err;
 949 }
 950
 951 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
 952 {
 953         struct sk_buff *skb;
 954         unsigned long flags;
 955         int err = 0;
 956
 957         spin_lock_irqsave(&data->rxlock, flags);
 958         skb = data->sco_skb;
 959
 960         while (count) {
 961                 int len;
 962
 963                 if (!skb) {
 964                         skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
 965                         if (!skb) {
 966                                 err = -ENOMEM;
 967                                 break;
 968                         }
 969
 970                         hci_skb_pkt_type(skb) = HCI_SCODATA_PKT;
 971                         hci_skb_expect(skb) = HCI_SCO_HDR_SIZE;
 972                 }
 973
 974                 len = min_t(uint, hci_skb_expect(skb), count);
 975                 skb_put_data(skb, buffer, len);
 976
 977                 count -= len;
 978                 buffer += len;
 979                 hci_skb_expect(skb) -= len;
 980
 981                 if (skb->len == HCI_SCO_HDR_SIZE) {
 982                         /* Complete SCO header */
 983                         hci_skb_expect(skb) = hci_sco_hdr(skb)->dlen;
 984
 985                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 986                                 kfree_skb(skb);
 987                                 skb = NULL;
 988
 989                                 err = -EILSEQ;
 990                                 break;
 991                         }
 992                 }
 993
 994                 if (!hci_skb_expect(skb)) {
 995                         /* Complete frame */
 996                         hci_recv_frame(data->hdev, skb);
 997                         skb = NULL;
 998                 }
 999         }
1000
1001         data->sco_skb = skb;
1002         spin_unlock_irqrestore(&data->rxlock, flags);
1003
1004         return err;
1005 }
1006
1007 static void btusb_intr_complete(struct urb *urb)
1008 {
1009         struct hci_dev *hdev = urb->context;
1010         struct btusb_data *data = hci_get_drvdata(hdev);
1011         int err;
1012
1013         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1014                urb->actual_length);
1015
1016         if (!test_bit(HCI_RUNNING, &hdev->flags))
1017                 return;
1018
1019         if (urb->status == 0) {
1020                 hdev->stat.byte_rx += urb->actual_length;
1021
1022                 if (btusb_recv_intr(data, urb->transfer_buffer,
1023                                     urb->actual_length) < 0) {
1024                         bt_dev_err(hdev, "corrupted event packet");
1025                         hdev->stat.err_rx++;
1026                 }
1027         } else if (urb->status == -ENOENT) {
1028                 /* Avoid suspend failed when usb_kill_urb */
1029                 return;
1030         }
1031
1032         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
1033                 return;
1034
1035         usb_mark_last_busy(data->udev);
1036         usb_anchor_urb(urb, &data->intr_anchor);
1037
1038         err = usb_submit_urb(urb, GFP_ATOMIC);
1039         if (err < 0) {
1040                 /* -EPERM: urb is being killed;
1041                  * -ENODEV: device got disconnected
1042                  */
1043                 if (err != -EPERM && err != -ENODEV)
1044                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1045                                    urb, -err);
1046                 if (err != -EPERM)
1047                         hci_cmd_sync_cancel(hdev, -err);
1048                 usb_unanchor_urb(urb);
1049         }
1050 }
1051
1052 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
1053 {
1054         struct btusb_data *data = hci_get_drvdata(hdev);
1055         struct urb *urb;
1056         unsigned char *buf;
1057         unsigned int pipe;
1058         int err, size;
1059
1060         BT_DBG("%s", hdev->name);
1061
1062         if (!data->intr_ep)
1063                 return -ENODEV;
1064
1065         urb = usb_alloc_urb(0, mem_flags);
1066         if (!urb)
1067                 return -ENOMEM;
1068
1069         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
1070
1071         buf = kmalloc(size, mem_flags);
1072         if (!buf) {
1073                 usb_free_urb(urb);
1074                 return -ENOMEM;
1075         }
1076
1077         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
1078
1079         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
1080                          btusb_intr_complete, hdev, data->intr_ep->bInterval);
1081
1082         urb->transfer_flags |= URB_FREE_BUFFER;
1083
1084         usb_anchor_urb(urb, &data->intr_anchor);
1085
1086         err = usb_submit_urb(urb, mem_flags);
1087         if (err < 0) {
1088                 if (err != -EPERM && err != -ENODEV)
1089                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1090                                    urb, -err);
1091                 if (err != -EPERM)
1092                         hci_cmd_sync_cancel(hdev, -err);
1093                 usb_unanchor_urb(urb);
1094         }
1095
1096         /* Only initialize intr_interval if URB poll sync is enabled */
1097         if (!data->poll_sync)
1098                 goto done;
1099
1100         /* The units are frames (milliseconds) for full and low speed devices,
1101          * and microframes (1/8 millisecond) for highspeed and SuperSpeed
1102          * devices.
1103          *
1104          * This is done once on open/resume so it shouldn't change even if
1105          * force_poll_sync changes.
1106          */
1107         switch (urb->dev->speed) {
1108         case USB_SPEED_SUPER_PLUS:
1109         case USB_SPEED_SUPER:   /* units are 125us */
1110                 data->intr_interval = usecs_to_jiffies(urb->interval * 125);
1111                 break;
1112         default:
1113                 data->intr_interval = msecs_to_jiffies(urb->interval);
1114                 break;
1115         }
1116
1117 done:
1118         usb_free_urb(urb);
1119
1120         return err;
1121 }
1122
1123 static void btusb_bulk_complete(struct urb *urb)
1124 {
1125         struct hci_dev *hdev = urb->context;
1126         struct btusb_data *data = hci_get_drvdata(hdev);
1127         int err;
1128
1129         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1130                urb->actual_length);
1131
1132         if (!test_bit(HCI_RUNNING, &hdev->flags))
1133                 return;
1134
1135         if (urb->status == 0) {
1136                 hdev->stat.byte_rx += urb->actual_length;
1137
1138                 if (data->recv_bulk(data, urb->transfer_buffer,
1139                                     urb->actual_length) < 0) {
1140                         bt_dev_err(hdev, "corrupted ACL packet");
1141                         hdev->stat.err_rx++;
1142                 }
1143         } else if (urb->status == -ENOENT) {
1144                 /* Avoid suspend failed when usb_kill_urb */
1145                 return;
1146         }
1147
1148         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
1149                 return;
1150
1151         usb_anchor_urb(urb, &data->bulk_anchor);
1152         usb_mark_last_busy(data->udev);
1153
1154         err = usb_submit_urb(urb, GFP_ATOMIC);
1155         if (err < 0) {
1156                 /* -EPERM: urb is being killed;
1157                  * -ENODEV: device got disconnected
1158                  */
1159                 if (err != -EPERM && err != -ENODEV)
1160                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1161                                    urb, -err);
1162                 usb_unanchor_urb(urb);
1163         }
1164 }
1165
1166 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
1167 {
1168         struct btusb_data *data = hci_get_drvdata(hdev);
1169         struct urb *urb;
1170         unsigned char *buf;
1171         unsigned int pipe;
1172         int err, size = HCI_MAX_FRAME_SIZE;
1173
1174         BT_DBG("%s", hdev->name);
1175
1176         if (!data->bulk_rx_ep)
1177                 return -ENODEV;
1178
1179         urb = usb_alloc_urb(0, mem_flags);
1180         if (!urb)
1181                 return -ENOMEM;
1182
1183         buf = kmalloc(size, mem_flags);
1184         if (!buf) {
1185                 usb_free_urb(urb);
1186                 return -ENOMEM;
1187         }
1188
1189         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
1190
1191         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
1192                           btusb_bulk_complete, hdev);
1193
1194         urb->transfer_flags |= URB_FREE_BUFFER;
1195
1196         usb_mark_last_busy(data->udev);
1197         usb_anchor_urb(urb, &data->bulk_anchor);
1198
1199         err = usb_submit_urb(urb, mem_flags);
1200         if (err < 0) {
1201                 if (err != -EPERM && err != -ENODEV)
1202                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1203                                    urb, -err);
1204                 usb_unanchor_urb(urb);
1205         }
1206
1207         usb_free_urb(urb);
1208
1209         return err;
1210 }
1211
1212 static void btusb_isoc_complete(struct urb *urb)
1213 {
1214         struct hci_dev *hdev = urb->context;
1215         struct btusb_data *data = hci_get_drvdata(hdev);
1216         int i, err;
1217
1218         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1219                urb->actual_length);
1220
1221         if (!test_bit(HCI_RUNNING, &hdev->flags))
1222                 return;
1223
1224         if (urb->status == 0) {
1225                 for (i = 0; i < urb->number_of_packets; i++) {
1226                         unsigned int offset = urb->iso_frame_desc[i].offset;
1227                         unsigned int length = urb->iso_frame_desc[i].actual_length;
1228
1229                         if (urb->iso_frame_desc[i].status)
1230                                 continue;
1231
1232                         hdev->stat.byte_rx += length;
1233
1234                         if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
1235                                             length) < 0) {
1236                                 bt_dev_err(hdev, "corrupted SCO packet");
1237                                 hdev->stat.err_rx++;
1238                         }
1239                 }
1240         } else if (urb->status == -ENOENT) {
1241                 /* Avoid suspend failed when usb_kill_urb */
1242                 return;
1243         }
1244
1245         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
1246                 return;
1247
1248         usb_anchor_urb(urb, &data->isoc_anchor);
1249
1250         err = usb_submit_urb(urb, GFP_ATOMIC);
1251         if (err < 0) {
1252                 /* -EPERM: urb is being killed;
1253                  * -ENODEV: device got disconnected
1254                  */
1255                 if (err != -EPERM && err != -ENODEV)
1256                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1257                                    urb, -err);
1258                 usb_unanchor_urb(urb);
1259         }
1260 }
1261
1262 static inline void __fill_isoc_descriptor_msbc(struct urb *urb, int len,
1263                                                int mtu, struct btusb_data *data)
1264 {
1265         int i, offset = 0;
1266         unsigned int interval;
1267
1268         BT_DBG("len %d mtu %d", len, mtu);
1269
1270         /* For mSBC ALT 6 setting the host will send the packet at continuous
1271          * flow. As per core spec 5, vol 4, part B, table 2.1. For ALT setting
1272          * 6 the HCI PACKET INTERVAL should be 7.5ms for every usb packets.
1273          * To maintain the rate we send 63bytes of usb packets alternatively for
1274          * 7ms and 8ms to maintain the rate as 7.5ms.
1275          */
1276         if (data->usb_alt6_packet_flow) {
1277                 interval = 7;
1278                 data->usb_alt6_packet_flow = false;
1279         } else {
1280                 interval = 6;
1281                 data->usb_alt6_packet_flow = true;
1282         }
1283
1284         for (i = 0; i < interval; i++) {
1285                 urb->iso_frame_desc[i].offset = offset;
1286                 urb->iso_frame_desc[i].length = offset;
1287         }
1288
1289         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
1290                 urb->iso_frame_desc[i].offset = offset;
1291                 urb->iso_frame_desc[i].length = len;
1292                 i++;
1293         }
1294
1295         urb->number_of_packets = i;
1296 }
1297
1298 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
1299 {
1300         int i, offset = 0;
1301
1302         BT_DBG("len %d mtu %d", len, mtu);
1303
1304         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
1305                                         i++, offset += mtu, len -= mtu) {
1306                 urb->iso_frame_desc[i].offset = offset;
1307                 urb->iso_frame_desc[i].length = mtu;
1308         }
1309
1310         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
1311                 urb->iso_frame_desc[i].offset = offset;
1312                 urb->iso_frame_desc[i].length = len;
1313                 i++;
1314         }
1315
1316         urb->number_of_packets = i;
1317 }
1318
1319 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
1320 {
1321         struct btusb_data *data = hci_get_drvdata(hdev);
1322         struct urb *urb;
1323         unsigned char *buf;
1324         unsigned int pipe;
1325         int err, size;
1326
1327         BT_DBG("%s", hdev->name);
1328
1329         if (!data->isoc_rx_ep)
1330                 return -ENODEV;
1331
1332         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
1333         if (!urb)
1334                 return -ENOMEM;
1335
1336         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
1337                                                 BTUSB_MAX_ISOC_FRAMES;
1338
1339         buf = kmalloc(size, mem_flags);
1340         if (!buf) {
1341                 usb_free_urb(urb);
1342                 return -ENOMEM;
1343         }
1344
1345         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
1346
1347         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
1348                          hdev, data->isoc_rx_ep->bInterval);
1349
1350         urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
1351
1352         __fill_isoc_descriptor(urb, size,
1353                                le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
1354
1355         usb_anchor_urb(urb, &data->isoc_anchor);
1356
1357         err = usb_submit_urb(urb, mem_flags);
1358         if (err < 0) {
1359                 if (err != -EPERM && err != -ENODEV)
1360                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1361                                    urb, -err);
1362                 usb_unanchor_urb(urb);
1363         }
1364
1365         usb_free_urb(urb);
1366
1367         return err;
1368 }
1369
1370 static void btusb_diag_complete(struct urb *urb)
1371 {
1372         struct hci_dev *hdev = urb->context;
1373         struct btusb_data *data = hci_get_drvdata(hdev);
1374         int err;
1375
1376         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1377                urb->actual_length);
1378
1379         if (urb->status == 0) {
1380                 struct sk_buff *skb;
1381
1382                 skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC);
1383                 if (skb) {
1384                         skb_put_data(skb, urb->transfer_buffer,
1385                                      urb->actual_length);
1386                         hci_recv_diag(hdev, skb);
1387                 }
1388         } else if (urb->status == -ENOENT) {
1389                 /* Avoid suspend failed when usb_kill_urb */
1390                 return;
1391         }
1392
1393         if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags))
1394                 return;
1395
1396         usb_anchor_urb(urb, &data->diag_anchor);
1397         usb_mark_last_busy(data->udev);
1398
1399         err = usb_submit_urb(urb, GFP_ATOMIC);
1400         if (err < 0) {
1401                 /* -EPERM: urb is being killed;
1402                  * -ENODEV: device got disconnected
1403                  */
1404                 if (err != -EPERM && err != -ENODEV)
1405                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1406                                    urb, -err);
1407                 usb_unanchor_urb(urb);
1408         }
1409 }
1410
1411 static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags)
1412 {
1413         struct btusb_data *data = hci_get_drvdata(hdev);
1414         struct urb *urb;
1415         unsigned char *buf;
1416         unsigned int pipe;
1417         int err, size = HCI_MAX_FRAME_SIZE;
1418
1419         BT_DBG("%s", hdev->name);
1420
1421         if (!data->diag_rx_ep)
1422                 return -ENODEV;
1423
1424         urb = usb_alloc_urb(0, mem_flags);
1425         if (!urb)
1426                 return -ENOMEM;
1427
1428         buf = kmalloc(size, mem_flags);
1429         if (!buf) {
1430                 usb_free_urb(urb);
1431                 return -ENOMEM;
1432         }
1433
1434         pipe = usb_rcvbulkpipe(data->udev, data->diag_rx_ep->bEndpointAddress);
1435
1436         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
1437                           btusb_diag_complete, hdev);
1438
1439         urb->transfer_flags |= URB_FREE_BUFFER;
1440
1441         usb_mark_last_busy(data->udev);
1442         usb_anchor_urb(urb, &data->diag_anchor);
1443
1444         err = usb_submit_urb(urb, mem_flags);
1445         if (err < 0) {
1446                 if (err != -EPERM && err != -ENODEV)
1447                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1448                                    urb, -err);
1449                 usb_unanchor_urb(urb);
1450         }
1451
1452         usb_free_urb(urb);
1453
1454         return err;
1455 }
1456
1457 static void btusb_tx_complete(struct urb *urb)
1458 {
1459         struct sk_buff *skb = urb->context;
1460         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1461         struct btusb_data *data = hci_get_drvdata(hdev);
1462         unsigned long flags;
1463
1464         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1465                urb->actual_length);
1466
1467         if (!test_bit(HCI_RUNNING, &hdev->flags))
1468                 goto done;
1469
1470         if (!urb->status) {
1471                 hdev->stat.byte_tx += urb->transfer_buffer_length;
1472         } else {
1473                 if (hci_skb_pkt_type(skb) == HCI_COMMAND_PKT)
1474                         hci_cmd_sync_cancel(hdev, -urb->status);
1475                 hdev->stat.err_tx++;
1476         }
1477
1478 done:
1479         spin_lock_irqsave(&data->txlock, flags);
1480         data->tx_in_flight--;
1481         spin_unlock_irqrestore(&data->txlock, flags);
1482
1483         kfree(urb->setup_packet);
1484
1485         kfree_skb(skb);
1486 }
1487
1488 static void btusb_isoc_tx_complete(struct urb *urb)
1489 {
1490         struct sk_buff *skb = urb->context;
1491         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1492
1493         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1494                urb->actual_length);
1495
1496         if (!test_bit(HCI_RUNNING, &hdev->flags))
1497                 goto done;
1498
1499         if (!urb->status)
1500                 hdev->stat.byte_tx += urb->transfer_buffer_length;
1501         else
1502                 hdev->stat.err_tx++;
1503
1504 done:
1505         kfree(urb->setup_packet);
1506
1507         kfree_skb(skb);
1508 }
1509
1510 static int btusb_open(struct hci_dev *hdev)
1511 {
1512         struct btusb_data *data = hci_get_drvdata(hdev);
1513         int err;
1514
1515         BT_DBG("%s", hdev->name);
1516
1517         err = usb_autopm_get_interface(data->intf);
1518         if (err < 0)
1519                 return err;
1520
1521         /* Patching USB firmware files prior to starting any URBs of HCI path
1522          * It is more safe to use USB bulk channel for downloading USB patch
1523          */
1524         if (data->setup_on_usb) {
1525                 err = data->setup_on_usb(hdev);
1526                 if (err < 0)
1527                         goto setup_fail;
1528         }
1529
1530         data->intf->needs_remote_wakeup = 1;
1531
1532         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
1533                 goto done;
1534
1535         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
1536         if (err < 0)
1537                 goto failed;
1538
1539         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1540         if (err < 0) {
1541                 usb_kill_anchored_urbs(&data->intr_anchor);
1542                 goto failed;
1543         }
1544
1545         set_bit(BTUSB_BULK_RUNNING, &data->flags);
1546         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1547
1548         if (data->diag) {
1549                 if (!btusb_submit_diag_urb(hdev, GFP_KERNEL))
1550                         set_bit(BTUSB_DIAG_RUNNING, &data->flags);
1551         }
1552
1553 done:
1554         usb_autopm_put_interface(data->intf);
1555         return 0;
1556
1557 failed:
1558         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1559 setup_fail:
1560         usb_autopm_put_interface(data->intf);
1561         return err;
1562 }
1563
1564 static void btusb_stop_traffic(struct btusb_data *data)
1565 {
1566         usb_kill_anchored_urbs(&data->intr_anchor);
1567         usb_kill_anchored_urbs(&data->bulk_anchor);
1568         usb_kill_anchored_urbs(&data->isoc_anchor);
1569         usb_kill_anchored_urbs(&data->diag_anchor);
1570         usb_kill_anchored_urbs(&data->ctrl_anchor);
1571 }
1572
1573 static int btusb_close(struct hci_dev *hdev)
1574 {
1575         struct btusb_data *data = hci_get_drvdata(hdev);
1576         int err;
1577
1578         BT_DBG("%s", hdev->name);
1579
1580         cancel_delayed_work(&data->rx_work);
1581         cancel_work_sync(&data->work);
1582         cancel_work_sync(&data->waker);
1583
1584         skb_queue_purge(&data->acl_q);
1585
1586         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1587         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1588         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1589         clear_bit(BTUSB_DIAG_RUNNING, &data->flags);
1590
1591         btusb_stop_traffic(data);
1592         btusb_free_frags(data);
1593
1594         err = usb_autopm_get_interface(data->intf);
1595         if (err < 0)
1596                 goto failed;
1597
1598         data->intf->needs_remote_wakeup = 0;
1599
1600         /* Enable remote wake up for auto-suspend */
1601         if (test_bit(BTUSB_WAKEUP_AUTOSUSPEND, &data->flags))
1602                 data->intf->needs_remote_wakeup = 1;
1603
1604         usb_autopm_put_interface(data->intf);
1605
1606 failed:
1607         usb_scuttle_anchored_urbs(&data->deferred);
1608         return 0;
1609 }
1610
1611 static int btusb_flush(struct hci_dev *hdev)
1612 {
1613         struct btusb_data *data = hci_get_drvdata(hdev);
1614
1615         BT_DBG("%s", hdev->name);
1616
1617         cancel_delayed_work(&data->rx_work);
1618
1619         skb_queue_purge(&data->acl_q);
1620
1621         usb_kill_anchored_urbs(&data->tx_anchor);
1622         btusb_free_frags(data);
1623
1624         return 0;
1625 }
1626
1627 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
1628 {
1629         struct btusb_data *data = hci_get_drvdata(hdev);
1630         struct usb_ctrlrequest *dr;
1631         struct urb *urb;
1632         unsigned int pipe;
1633
1634         urb = usb_alloc_urb(0, GFP_KERNEL);
1635         if (!urb)
1636                 return ERR_PTR(-ENOMEM);
1637
1638         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
1639         if (!dr) {
1640                 usb_free_urb(urb);
1641                 return ERR_PTR(-ENOMEM);
1642         }
1643
1644         dr->bRequestType = data->cmdreq_type;
1645         dr->bRequest     = data->cmdreq;
1646         dr->wIndex       = 0;
1647         dr->wValue       = 0;
1648         dr->wLength      = __cpu_to_le16(skb->len);
1649
1650         pipe = usb_sndctrlpipe(data->udev, 0x00);
1651
1652         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
1653                              skb->data, skb->len, btusb_tx_complete, skb);
1654
1655         skb->dev = (void *)hdev;
1656
1657         return urb;
1658 }
1659
1660 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
1661 {
1662         struct btusb_data *data = hci_get_drvdata(hdev);
1663         struct urb *urb;
1664         unsigned int pipe;
1665
1666         if (!data->bulk_tx_ep)
1667                 return ERR_PTR(-ENODEV);
1668
1669         urb = usb_alloc_urb(0, GFP_KERNEL);
1670         if (!urb)
1671                 return ERR_PTR(-ENOMEM);
1672
1673         pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1674
1675         usb_fill_bulk_urb(urb, data->udev, pipe,
1676                           skb->data, skb->len, btusb_tx_complete, skb);
1677
1678         skb->dev = (void *)hdev;
1679
1680         return urb;
1681 }
1682
1683 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1684 {
1685         struct btusb_data *data = hci_get_drvdata(hdev);
1686         struct urb *urb;
1687         unsigned int pipe;
1688
1689         if (!data->isoc_tx_ep)
1690                 return ERR_PTR(-ENODEV);
1691
1692         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1693         if (!urb)
1694                 return ERR_PTR(-ENOMEM);
1695
1696         pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1697
1698         usb_fill_int_urb(urb, data->udev, pipe,
1699                          skb->data, skb->len, btusb_isoc_tx_complete,
1700                          skb, data->isoc_tx_ep->bInterval);
1701
1702         urb->transfer_flags  = URB_ISO_ASAP;
1703
1704         if (data->isoc_altsetting == 6)
1705                 __fill_isoc_descriptor_msbc(urb, skb->len,
1706                                             le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize),
1707                                             data);
1708         else
1709                 __fill_isoc_descriptor(urb, skb->len,
1710                                        le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1711         skb->dev = (void *)hdev;
1712
1713         return urb;
1714 }
1715
1716 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1717 {
1718         struct btusb_data *data = hci_get_drvdata(hdev);
1719         int err;
1720
1721         usb_anchor_urb(urb, &data->tx_anchor);
1722
1723         err = usb_submit_urb(urb, GFP_KERNEL);
1724         if (err < 0) {
1725                 if (err != -EPERM && err != -ENODEV)
1726                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1727                                    urb, -err);
1728                 kfree(urb->setup_packet);
1729                 usb_unanchor_urb(urb);
1730         } else {
1731                 usb_mark_last_busy(data->udev);
1732         }
1733
1734         usb_free_urb(urb);
1735         return err;
1736 }
1737
1738 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1739 {
1740         struct btusb_data *data = hci_get_drvdata(hdev);
1741         unsigned long flags;
1742         bool suspending;
1743
1744         spin_lock_irqsave(&data->txlock, flags);
1745         suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1746         if (!suspending)
1747                 data->tx_in_flight++;
1748         spin_unlock_irqrestore(&data->txlock, flags);
1749
1750         if (!suspending)
1751                 return submit_tx_urb(hdev, urb);
1752
1753         usb_anchor_urb(urb, &data->deferred);
1754         schedule_work(&data->waker);
1755
1756         usb_free_urb(urb);
1757         return 0;
1758 }
1759
1760 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1761 {
1762         struct urb *urb;
1763
1764         BT_DBG("%s", hdev->name);
1765
1766         switch (hci_skb_pkt_type(skb)) {
1767         case HCI_COMMAND_PKT:
1768                 urb = alloc_ctrl_urb(hdev, skb);
1769                 if (IS_ERR(urb))
1770                         return PTR_ERR(urb);
1771
1772                 hdev->stat.cmd_tx++;
1773                 return submit_or_queue_tx_urb(hdev, urb);
1774
1775         case HCI_ACLDATA_PKT:
1776                 urb = alloc_bulk_urb(hdev, skb);
1777                 if (IS_ERR(urb))
1778                         return PTR_ERR(urb);
1779
1780                 hdev->stat.acl_tx++;
1781                 return submit_or_queue_tx_urb(hdev, urb);
1782
1783         case HCI_SCODATA_PKT:
1784                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1785                         return -ENODEV;
1786
1787                 urb = alloc_isoc_urb(hdev, skb);
1788                 if (IS_ERR(urb))
1789                         return PTR_ERR(urb);
1790
1791                 hdev->stat.sco_tx++;
1792                 return submit_tx_urb(hdev, urb);
1793
1794         case HCI_ISODATA_PKT:
1795                 urb = alloc_bulk_urb(hdev, skb);
1796                 if (IS_ERR(urb))
1797                         return PTR_ERR(urb);
1798
1799                 return submit_or_queue_tx_urb(hdev, urb);
1800         }
1801
1802         return -EILSEQ;
1803 }
1804
1805 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1806 {
1807         struct btusb_data *data = hci_get_drvdata(hdev);
1808
1809         BT_DBG("%s evt %d", hdev->name, evt);
1810
1811         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1812                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1813                 data->air_mode = evt;
1814                 schedule_work(&data->work);
1815         }
1816 }
1817
1818 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1819 {
1820         struct btusb_data *data = hci_get_drvdata(hdev);
1821         struct usb_interface *intf = data->isoc;
1822         struct usb_endpoint_descriptor *ep_desc;
1823         int i, err;
1824
1825         if (!data->isoc)
1826                 return -ENODEV;
1827
1828         err = usb_set_interface(data->udev, data->isoc_ifnum, altsetting);
1829         if (err < 0) {
1830                 bt_dev_err(hdev, "setting interface failed (%d)", -err);
1831                 return err;
1832         }
1833
1834         data->isoc_altsetting = altsetting;
1835
1836         data->isoc_tx_ep = NULL;
1837         data->isoc_rx_ep = NULL;
1838
1839         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1840                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1841
1842                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1843                         data->isoc_tx_ep = ep_desc;
1844                         continue;
1845                 }
1846
1847                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1848                         data->isoc_rx_ep = ep_desc;
1849                         continue;
1850                 }
1851         }
1852
1853         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1854                 bt_dev_err(hdev, "invalid SCO descriptors");
1855                 return -ENODEV;
1856         }
1857
1858         return 0;
1859 }
1860
1861 static int btusb_switch_alt_setting(struct hci_dev *hdev, int new_alts)
1862 {
1863         struct btusb_data *data = hci_get_drvdata(hdev);
1864         int err;
1865
1866         if (data->isoc_altsetting != new_alts) {
1867                 unsigned long flags;
1868
1869                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1870                 usb_kill_anchored_urbs(&data->isoc_anchor);
1871
1872                 /* When isochronous alternate setting needs to be
1873                  * changed, because SCO connection has been added
1874                  * or removed, a packet fragment may be left in the
1875                  * reassembling state. This could lead to wrongly
1876                  * assembled fragments.
1877                  *
1878                  * Clear outstanding fragment when selecting a new
1879                  * alternate setting.
1880                  */
1881                 spin_lock_irqsave(&data->rxlock, flags);
1882                 kfree_skb(data->sco_skb);
1883                 data->sco_skb = NULL;
1884                 spin_unlock_irqrestore(&data->rxlock, flags);
1885
1886                 err = __set_isoc_interface(hdev, new_alts);
1887                 if (err < 0)
1888                         return err;
1889         }
1890
1891         if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1892                 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1893                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1894                 else
1895                         btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1896         }
1897
1898         return 0;
1899 }
1900
1901 static struct usb_host_interface *btusb_find_altsetting(struct btusb_data *data,
1902                                                         int alt)
1903 {
1904         struct usb_interface *intf = data->isoc;
1905         int i;
1906
1907         BT_DBG("Looking for Alt no :%d", alt);
1908
1909         if (!intf)
1910                 return NULL;
1911
1912         for (i = 0; i < intf->num_altsetting; i++) {
1913                 if (intf->altsetting[i].desc.bAlternateSetting == alt)
1914                         return &intf->altsetting[i];
1915         }
1916
1917         return NULL;
1918 }
1919
1920 static void btusb_work(struct work_struct *work)
1921 {
1922         struct btusb_data *data = container_of(work, struct btusb_data, work);
1923         struct hci_dev *hdev = data->hdev;
1924         int new_alts = 0;
1925         int err;
1926
1927         if (data->sco_num > 0) {
1928                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1929                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1930                         if (err < 0) {
1931                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1932                                 usb_kill_anchored_urbs(&data->isoc_anchor);
1933                                 return;
1934                         }
1935
1936                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1937                 }
1938
1939                 if (data->air_mode == HCI_NOTIFY_ENABLE_SCO_CVSD) {
1940                         if (hdev->voice_setting & 0x0020) {
1941                                 static const int alts[3] = { 2, 4, 5 };
1942
1943                                 new_alts = alts[data->sco_num - 1];
1944                         } else {
1945                                 new_alts = data->sco_num;
1946                         }
1947                 } else if (data->air_mode == HCI_NOTIFY_ENABLE_SCO_TRANSP) {
1948                         /* Bluetooth USB spec recommends alt 6 (63 bytes), but
1949                          * many adapters do not support it.  Alt 1 appears to
1950                          * work for all adapters that do not have alt 6, and
1951                          * which work with WBS at all.  Some devices prefer
1952                          * alt 3 (HCI payload >= 60 Bytes let air packet
1953                          * data satisfy 60 bytes), requiring
1954                          * MTU >= 3 (packets) * 25 (size) - 3 (headers) = 72
1955                          * see also Core spec 5, vol 4, B 2.1.1 & Table 2.1.
1956                          */
1957                         if (btusb_find_altsetting(data, 6))
1958                                 new_alts = 6;
1959                         else if (btusb_find_altsetting(data, 3) &&
1960                                  hdev->sco_mtu >= 72 &&
1961                                  test_bit(BTUSB_USE_ALT3_FOR_WBS, &data->flags))
1962                                 new_alts = 3;
1963                         else
1964                                 new_alts = 1;
1965                 }
1966
1967                 if (btusb_switch_alt_setting(hdev, new_alts) < 0)
1968                         bt_dev_err(hdev, "set USB alt:(%d) failed!", new_alts);
1969         } else {
1970                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1971                 usb_kill_anchored_urbs(&data->isoc_anchor);
1972
1973                 __set_isoc_interface(hdev, 0);
1974                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1975                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1976         }
1977 }
1978
1979 static void btusb_waker(struct work_struct *work)
1980 {
1981         struct btusb_data *data = container_of(work, struct btusb_data, waker);
1982         int err;
1983
1984         err = usb_autopm_get_interface(data->intf);
1985         if (err < 0)
1986                 return;
1987
1988         usb_autopm_put_interface(data->intf);
1989 }
1990
1991 static void btusb_rx_work(struct work_struct *work)
1992 {
1993         struct btusb_data *data = container_of(work, struct btusb_data,
1994                                                rx_work.work);
1995         struct sk_buff *skb;
1996
1997         /* Dequeue ACL data received during the interval */
1998         while ((skb = skb_dequeue(&data->acl_q)))
1999                 data->recv_acl(data->hdev, skb);
2000 }
2001
2002 static int btusb_setup_bcm92035(struct hci_dev *hdev)
2003 {
2004         struct sk_buff *skb;
2005         u8 val = 0x00;
2006
2007         BT_DBG("%s", hdev->name);
2008
2009         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
2010         if (IS_ERR(skb))
2011                 bt_dev_err(hdev, "BCM92035 command failed (%ld)", PTR_ERR(skb));
2012         else
2013                 kfree_skb(skb);
2014
2015         return 0;
2016 }
2017
2018 static int btusb_setup_csr(struct hci_dev *hdev)
2019 {
2020         struct btusb_data *data = hci_get_drvdata(hdev);
2021         u16 bcdDevice = le16_to_cpu(data->udev->descriptor.bcdDevice);
2022         struct hci_rp_read_local_version *rp;
2023         struct sk_buff *skb;
2024         bool is_fake = false;
2025         int ret;
2026
2027         BT_DBG("%s", hdev->name);
2028
2029         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
2030                              HCI_INIT_TIMEOUT);
2031         if (IS_ERR(skb)) {
2032                 int err = PTR_ERR(skb);
2033                 bt_dev_err(hdev, "CSR: Local version failed (%d)", err);
2034                 return err;
2035         }
2036
2037         if (skb->len != sizeof(struct hci_rp_read_local_version)) {
2038                 bt_dev_err(hdev, "CSR: Local version length mismatch");
2039                 kfree_skb(skb);
2040                 return -EIO;
2041         }
2042
2043         rp = (struct hci_rp_read_local_version *)skb->data;
2044
2045         /* Detect a wide host of Chinese controllers that aren't CSR.
2046          *
2047          * Known fake bcdDevices: 0x0100, 0x0134, 0x1915, 0x2520, 0x7558, 0x8891
2048          *
2049          * The main thing they have in common is that these are really popular low-cost
2050          * options that support newer Bluetooth versions but rely on heavy VID/PID
2051          * squatting of this poor old Bluetooth 1.1 device. Even sold as such.
2052          *
2053          * We detect actual CSR devices by checking that the HCI manufacturer code
2054          * is Cambridge Silicon Radio (10) and ensuring that LMP sub-version and
2055          * HCI rev values always match. As they both store the firmware number.
2056          */
2057         if (le16_to_cpu(rp->manufacturer) != 10 ||
2058             le16_to_cpu(rp->hci_rev) != le16_to_cpu(rp->lmp_subver))
2059                 is_fake = true;
2060
2061         /* Known legit CSR firmware build numbers and their supported BT versions:
2062          * - 1.1 (0x1) -> 0x0073, 0x020d, 0x033c, 0x034e
2063          * - 1.2 (0x2) ->                 0x04d9, 0x0529
2064          * - 2.0 (0x3) ->         0x07a6, 0x07ad, 0x0c5c
2065          * - 2.1 (0x4) ->         0x149c, 0x1735, 0x1899 (0x1899 is a BlueCore4-External)
2066          * - 4.0 (0x6) ->         0x1d86, 0x2031, 0x22bb
2067          *
2068          * e.g. Real CSR dongles with LMP subversion 0x73 are old enough that
2069          *      support BT 1.1 only; so it's a dead giveaway when some
2070          *      third-party BT 4.0 dongle reuses it.
2071          */
2072         else if (le16_to_cpu(rp->lmp_subver) <= 0x034e &&
2073                  le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_1_1)
2074                 is_fake = true;
2075
2076         else if (le16_to_cpu(rp->lmp_subver) <= 0x0529 &&
2077                  le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_1_2)
2078                 is_fake = true;
2079
2080         else if (le16_to_cpu(rp->lmp_subver) <= 0x0c5c &&
2081                  le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_2_0)
2082                 is_fake = true;
2083
2084         else if (le16_to_cpu(rp->lmp_subver) <= 0x1899 &&
2085                  le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_2_1)
2086                 is_fake = true;
2087
2088         else if (le16_to_cpu(rp->lmp_subver) <= 0x22bb &&
2089                  le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_4_0)
2090                 is_fake = true;
2091
2092         /* Other clones which beat all the above checks */
2093         else if (bcdDevice == 0x0134 &&
2094                  le16_to_cpu(rp->lmp_subver) == 0x0c5c &&
2095                  le16_to_cpu(rp->hci_ver) == BLUETOOTH_VER_2_0)
2096                 is_fake = true;
2097
2098         if (is_fake) {
2099                 bt_dev_warn(hdev, "CSR: Unbranded CSR clone detected; adding workarounds and force-suspending once...");
2100
2101                 /* Generally these clones have big discrepancies between
2102                  * advertised features and what's actually supported.
2103                  * Probably will need to be expanded in the future;
2104                  * without these the controller will lock up.
2105                  */
2106                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
2107                 set_bit(HCI_QUIRK_BROKEN_FILTER_CLEAR_ALL, &hdev->quirks);
2108                 set_bit(HCI_QUIRK_NO_SUSPEND_NOTIFIER, &hdev->quirks);
2109
2110                 /* Clear the reset quirk since this is not an actual
2111                  * early Bluetooth 1.1 device from CSR.
2112                  */
2113                 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
2114                 clear_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
2115
2116                 /*
2117                  * Special workaround for these BT 4.0 chip clones, and potentially more:
2118                  *
2119                  * - 0x0134: a Barrot 8041a02                 (HCI rev: 0x0810 sub: 0x1012)
2120                  * - 0x7558: IC markings FR3191AHAL 749H15143 (HCI rev/sub-version: 0x0709)
2121                  *
2122                  * These controllers are really messed-up.
2123                  *
2124                  * 1. Their bulk RX endpoint will never report any data unless
2125                  *    the device was suspended at least once (yes, really).
2126                  * 2. They will not wakeup when autosuspended and receiving data
2127                  *    on their bulk RX endpoint from e.g. a keyboard or mouse
2128                  *    (IOW remote-wakeup support is broken for the bulk endpoint).
2129                  *
2130                  * To fix 1. enable runtime-suspend, force-suspend the
2131                  * HCI and then wake-it up by disabling runtime-suspend.
2132                  *
2133                  * To fix 2. clear the HCI's can_wake flag, this way the HCI
2134                  * will still be autosuspended when it is not open.
2135                  *
2136                  * --
2137                  *
2138                  * Because these are widespread problems we prefer generic solutions; so
2139                  * apply this initialization quirk to every controller that gets here,
2140                  * it should be harmless. The alternative is to not work at all.
2141                  */
2142                 pm_runtime_allow(&data->udev->dev);
2143
2144                 ret = pm_runtime_suspend(&data->udev->dev);
2145                 if (ret >= 0)
2146                         msleep(200);
2147                 else
2148                         bt_dev_warn(hdev, "CSR: Couldn't suspend the device for our Barrot 8041a02 receive-issue workaround");
2149
2150                 pm_runtime_forbid(&data->udev->dev);
2151
2152                 device_set_wakeup_capable(&data->udev->dev, false);
2153
2154                 /* Re-enable autosuspend if this was requested */
2155                 if (enable_autosuspend)
2156                         usb_enable_autosuspend(data->udev);
2157         }
2158
2159         kfree_skb(skb);
2160
2161         return 0;
2162 }
2163
2164 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
2165 {
2166         struct sk_buff *skb;
2167         struct hci_event_hdr *hdr;
2168         struct hci_ev_cmd_complete *evt;
2169
2170         skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_KERNEL);
2171         if (!skb)
2172                 return -ENOMEM;
2173
2174         hdr = skb_put(skb, sizeof(*hdr));
2175         hdr->evt = HCI_EV_CMD_COMPLETE;
2176         hdr->plen = sizeof(*evt) + 1;
2177
2178         evt = skb_put(skb, sizeof(*evt));
2179         evt->ncmd = 0x01;
2180         evt->opcode = cpu_to_le16(opcode);
2181
2182         skb_put_u8(skb, 0x00);
2183
2184         hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
2185
2186         return hci_recv_frame(hdev, skb);
2187 }
2188
2189 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
2190                                  int count)
2191 {
2192         struct hci_dev *hdev = data->hdev;
2193
2194         /* When the device is in bootloader mode, then it can send
2195          * events via the bulk endpoint. These events are treated the
2196          * same way as the ones received from the interrupt endpoint.
2197          */
2198         if (btintel_test_flag(hdev, INTEL_BOOTLOADER))
2199                 return btusb_recv_intr(data, buffer, count);
2200
2201         return btusb_recv_bulk(data, buffer, count);
2202 }
2203
2204 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
2205 {
2206         if (btintel_test_flag(hdev, INTEL_BOOTLOADER)) {
2207                 struct hci_event_hdr *hdr = (void *)skb->data;
2208
2209                 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
2210                     hdr->plen > 0) {
2211                         const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
2212                         unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
2213
2214                         switch (skb->data[2]) {
2215                         case 0x02:
2216                                 /* When switching to the operational firmware
2217                                  * the device sends a vendor specific event
2218                                  * indicating that the bootup completed.
2219                                  */
2220                                 btintel_bootup(hdev, ptr, len);
2221                                 break;
2222                         case 0x06:
2223                                 /* When the firmware loading completes the
2224                                  * device sends out a vendor specific event
2225                                  * indicating the result of the firmware
2226                                  * loading.
2227                                  */
2228                                 btintel_secure_send_result(hdev, ptr, len);
2229                                 break;
2230                         }
2231                 }
2232         }
2233
2234         return hci_recv_frame(hdev, skb);
2235 }
2236
2237 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
2238 {
2239         struct urb *urb;
2240
2241         BT_DBG("%s", hdev->name);
2242
2243         switch (hci_skb_pkt_type(skb)) {
2244         case HCI_COMMAND_PKT:
2245                 if (btintel_test_flag(hdev, INTEL_BOOTLOADER)) {
2246                         struct hci_command_hdr *cmd = (void *)skb->data;
2247                         __u16 opcode = le16_to_cpu(cmd->opcode);
2248
2249                         /* When in bootloader mode and the command 0xfc09
2250                          * is received, it needs to be send down the
2251                          * bulk endpoint. So allocate a bulk URB instead.
2252                          */
2253                         if (opcode == 0xfc09)
2254                                 urb = alloc_bulk_urb(hdev, skb);
2255                         else
2256                                 urb = alloc_ctrl_urb(hdev, skb);
2257
2258                         /* When the 0xfc01 command is issued to boot into
2259                          * the operational firmware, it will actually not
2260                          * send a command complete event. To keep the flow
2261                          * control working inject that event here.
2262                          */
2263                         if (opcode == 0xfc01)
2264                                 inject_cmd_complete(hdev, opcode);
2265                 } else {
2266                         urb = alloc_ctrl_urb(hdev, skb);
2267                 }
2268                 if (IS_ERR(urb))
2269                         return PTR_ERR(urb);
2270
2271                 hdev->stat.cmd_tx++;
2272                 return submit_or_queue_tx_urb(hdev, urb);
2273
2274         case HCI_ACLDATA_PKT:
2275                 urb = alloc_bulk_urb(hdev, skb);
2276                 if (IS_ERR(urb))
2277                         return PTR_ERR(urb);
2278
2279                 hdev->stat.acl_tx++;
2280                 return submit_or_queue_tx_urb(hdev, urb);
2281
2282         case HCI_SCODATA_PKT:
2283                 if (hci_conn_num(hdev, SCO_LINK) < 1)
2284                         return -ENODEV;
2285
2286                 urb = alloc_isoc_urb(hdev, skb);
2287                 if (IS_ERR(urb))
2288                         return PTR_ERR(urb);
2289
2290                 hdev->stat.sco_tx++;
2291                 return submit_tx_urb(hdev, urb);
2292
2293         case HCI_ISODATA_PKT:
2294                 urb = alloc_bulk_urb(hdev, skb);
2295                 if (IS_ERR(urb))
2296                         return PTR_ERR(urb);
2297
2298                 return submit_or_queue_tx_urb(hdev, urb);
2299         }
2300
2301         return -EILSEQ;
2302 }
2303
2304 /* UHW CR mapping */
2305 #define MTK_BT_MISC             0x70002510
2306 #define MTK_BT_SUBSYS_RST       0x70002610
2307 #define MTK_UDMA_INT_STA_BT     0x74000024
2308 #define MTK_UDMA_INT_STA_BT1    0x74000308
2309 #define MTK_BT_WDT_STATUS       0x740003A0
2310 #define MTK_EP_RST_OPT          0x74011890
2311 #define MTK_EP_RST_IN_OUT_OPT   0x00010001
2312 #define MTK_BT_RST_DONE         0x00000100
2313 #define MTK_BT_RESET_WAIT_MS    100
2314 #define MTK_BT_RESET_NUM_TRIES  10
2315
2316 static void btusb_mtk_wmt_recv(struct urb *urb)
2317 {
2318         struct hci_dev *hdev = urb->context;
2319         struct btusb_data *data = hci_get_drvdata(hdev);
2320         struct sk_buff *skb;
2321         int err;
2322
2323         if (urb->status == 0 && urb->actual_length > 0) {
2324                 hdev->stat.byte_rx += urb->actual_length;
2325
2326                 /* WMT event shouldn't be fragmented and the size should be
2327                  * less than HCI_WMT_MAX_EVENT_SIZE.
2328                  */
2329                 skb = bt_skb_alloc(HCI_WMT_MAX_EVENT_SIZE, GFP_ATOMIC);
2330                 if (!skb) {
2331                         hdev->stat.err_rx++;
2332                         kfree(urb->setup_packet);
2333                         return;
2334                 }
2335
2336                 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
2337                 skb_put_data(skb, urb->transfer_buffer, urb->actual_length);
2338
2339                 /* When someone waits for the WMT event, the skb is being cloned
2340                  * and being processed the events from there then.
2341                  */
2342                 if (test_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags)) {
2343                         data->evt_skb = skb_clone(skb, GFP_ATOMIC);
2344                         if (!data->evt_skb) {
2345                                 kfree_skb(skb);
2346                                 kfree(urb->setup_packet);
2347                                 return;
2348                         }
2349                 }
2350
2351                 err = hci_recv_frame(hdev, skb);
2352                 if (err < 0) {
2353                         kfree_skb(data->evt_skb);
2354                         data->evt_skb = NULL;
2355                         kfree(urb->setup_packet);
2356                         return;
2357                 }
2358
2359                 if (test_and_clear_bit(BTUSB_TX_WAIT_VND_EVT,
2360                                        &data->flags)) {
2361                         /* Barrier to sync with other CPUs */
2362                         smp_mb__after_atomic();
2363                         wake_up_bit(&data->flags,
2364                                     BTUSB_TX_WAIT_VND_EVT);
2365                 }
2366                 kfree(urb->setup_packet);
2367                 return;
2368         } else if (urb->status == -ENOENT) {
2369                 /* Avoid suspend failed when usb_kill_urb */
2370                 return;
2371         }
2372
2373         usb_mark_last_busy(data->udev);
2374
2375         /* The URB complete handler is still called with urb->actual_length = 0
2376          * when the event is not available, so we should keep re-submitting
2377          * URB until WMT event returns, Also, It's necessary to wait some time
2378          * between the two consecutive control URBs to relax the target device
2379          * to generate the event. Otherwise, the WMT event cannot return from
2380          * the device successfully.
2381          */
2382         udelay(500);
2383
2384         usb_anchor_urb(urb, &data->ctrl_anchor);
2385         err = usb_submit_urb(urb, GFP_ATOMIC);
2386         if (err < 0) {
2387                 kfree(urb->setup_packet);
2388                 /* -EPERM: urb is being killed;
2389                  * -ENODEV: device got disconnected
2390                  */
2391                 if (err != -EPERM && err != -ENODEV)
2392                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
2393                                    urb, -err);
2394                 usb_unanchor_urb(urb);
2395         }
2396 }
2397
2398 static int btusb_mtk_submit_wmt_recv_urb(struct hci_dev *hdev)
2399 {
2400         struct btusb_data *data = hci_get_drvdata(hdev);
2401         struct usb_ctrlrequest *dr;
2402         unsigned char *buf;
2403         int err, size = 64;
2404         unsigned int pipe;
2405         struct urb *urb;
2406
2407         urb = usb_alloc_urb(0, GFP_KERNEL);
2408         if (!urb)
2409                 return -ENOMEM;
2410
2411         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
2412         if (!dr) {
2413                 usb_free_urb(urb);
2414                 return -ENOMEM;
2415         }
2416
2417         dr->bRequestType = USB_TYPE_VENDOR | USB_DIR_IN;
2418         dr->bRequest     = 1;
2419         dr->wIndex       = cpu_to_le16(0);
2420         dr->wValue       = cpu_to_le16(48);
2421         dr->wLength      = cpu_to_le16(size);
2422
2423         buf = kmalloc(size, GFP_KERNEL);
2424         if (!buf) {
2425                 kfree(dr);
2426                 usb_free_urb(urb);
2427                 return -ENOMEM;
2428         }
2429
2430         pipe = usb_rcvctrlpipe(data->udev, 0);
2431
2432         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
2433                              buf, size, btusb_mtk_wmt_recv, hdev);
2434
2435         urb->transfer_flags |= URB_FREE_BUFFER;
2436
2437         usb_anchor_urb(urb, &data->ctrl_anchor);
2438         err = usb_submit_urb(urb, GFP_KERNEL);
2439         if (err < 0) {
2440                 if (err != -EPERM && err != -ENODEV)
2441                         bt_dev_err(hdev, "urb %p submission failed (%d)",
2442                                    urb, -err);
2443                 usb_unanchor_urb(urb);
2444         }
2445
2446         usb_free_urb(urb);
2447
2448         return err;
2449 }
2450
2451 static int btusb_mtk_hci_wmt_sync(struct hci_dev *hdev,
2452                                   struct btmtk_hci_wmt_params *wmt_params)
2453 {
2454         struct btusb_data *data = hci_get_drvdata(hdev);
2455         struct btmtk_hci_wmt_evt_funcc *wmt_evt_funcc;
2456         u32 hlen, status = BTMTK_WMT_INVALID;
2457         struct btmtk_hci_wmt_evt *wmt_evt;
2458         struct btmtk_hci_wmt_cmd *wc;
2459         struct btmtk_wmt_hdr *hdr;
2460         int err;
2461
2462         /* Send the WMT command and wait until the WMT event returns */
2463         hlen = sizeof(*hdr) + wmt_params->dlen;
2464         if (hlen > 255)
2465                 return -EINVAL;
2466
2467         wc = kzalloc(hlen, GFP_KERNEL);
2468         if (!wc)
2469                 return -ENOMEM;
2470
2471         hdr = &wc->hdr;
2472         hdr->dir = 1;
2473         hdr->op = wmt_params->op;
2474         hdr->dlen = cpu_to_le16(wmt_params->dlen + 1);
2475         hdr->flag = wmt_params->flag;
2476         memcpy(wc->data, wmt_params->data, wmt_params->dlen);
2477
2478         set_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2479
2480         err = __hci_cmd_send(hdev, 0xfc6f, hlen, wc);
2481
2482         if (err < 0) {
2483                 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2484                 goto err_free_wc;
2485         }
2486
2487         /* Submit control IN URB on demand to process the WMT event */
2488         err = btusb_mtk_submit_wmt_recv_urb(hdev);
2489         if (err < 0)
2490                 goto err_free_wc;
2491
2492         /* The vendor specific WMT commands are all answered by a vendor
2493          * specific event and will have the Command Status or Command
2494          * Complete as with usual HCI command flow control.
2495          *
2496          * After sending the command, wait for BTUSB_TX_WAIT_VND_EVT
2497          * state to be cleared. The driver specific event receive routine
2498          * will clear that state and with that indicate completion of the
2499          * WMT command.
2500          */
2501         err = wait_on_bit_timeout(&data->flags, BTUSB_TX_WAIT_VND_EVT,
2502                                   TASK_INTERRUPTIBLE, HCI_INIT_TIMEOUT);
2503         if (err == -EINTR) {
2504                 bt_dev_err(hdev, "Execution of wmt command interrupted");
2505                 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2506                 goto err_free_wc;
2507         }
2508
2509         if (err) {
2510                 bt_dev_err(hdev, "Execution of wmt command timed out");
2511                 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2512                 err = -ETIMEDOUT;
2513                 goto err_free_wc;
2514         }
2515
2516         /* Parse and handle the return WMT event */
2517         wmt_evt = (struct btmtk_hci_wmt_evt *)data->evt_skb->data;
2518         if (wmt_evt->whdr.op != hdr->op) {
2519                 bt_dev_err(hdev, "Wrong op received %d expected %d",
2520                            wmt_evt->whdr.op, hdr->op);
2521                 err = -EIO;
2522                 goto err_free_skb;
2523         }
2524
2525         switch (wmt_evt->whdr.op) {
2526         case BTMTK_WMT_SEMAPHORE:
2527                 if (wmt_evt->whdr.flag == 2)
2528                         status = BTMTK_WMT_PATCH_UNDONE;
2529                 else
2530                         status = BTMTK_WMT_PATCH_DONE;
2531                 break;
2532         case BTMTK_WMT_FUNC_CTRL:
2533                 wmt_evt_funcc = (struct btmtk_hci_wmt_evt_funcc *)wmt_evt;
2534                 if (be16_to_cpu(wmt_evt_funcc->status) == 0x404)
2535                         status = BTMTK_WMT_ON_DONE;
2536                 else if (be16_to_cpu(wmt_evt_funcc->status) == 0x420)
2537                         status = BTMTK_WMT_ON_PROGRESS;
2538                 else
2539                         status = BTMTK_WMT_ON_UNDONE;
2540                 break;
2541         case BTMTK_WMT_PATCH_DWNLD:
2542                 if (wmt_evt->whdr.flag == 2)
2543                         status = BTMTK_WMT_PATCH_DONE;
2544                 else if (wmt_evt->whdr.flag == 1)
2545                         status = BTMTK_WMT_PATCH_PROGRESS;
2546                 else
2547                         status = BTMTK_WMT_PATCH_UNDONE;
2548                 break;
2549         }
2550
2551         if (wmt_params->status)
2552                 *wmt_params->status = status;
2553
2554 err_free_skb:
2555         kfree_skb(data->evt_skb);
2556         data->evt_skb = NULL;
2557 err_free_wc:
2558         kfree(wc);
2559         return err;
2560 }
2561
2562 static int btusb_mtk_func_query(struct hci_dev *hdev)
2563 {
2564         struct btmtk_hci_wmt_params wmt_params;
2565         int status, err;
2566         u8 param = 0;
2567
2568         /* Query whether the function is enabled */
2569         wmt_params.op = BTMTK_WMT_FUNC_CTRL;
2570         wmt_params.flag = 4;
2571         wmt_params.dlen = sizeof(param);
2572         wmt_params.data = &param;
2573         wmt_params.status = &status;
2574
2575         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2576         if (err < 0) {
2577                 bt_dev_err(hdev, "Failed to query function status (%d)", err);
2578                 return err;
2579         }
2580
2581         return status;
2582 }
2583
2584 static int btusb_mtk_uhw_reg_write(struct btusb_data *data, u32 reg, u32 val)
2585 {
2586         struct hci_dev *hdev = data->hdev;
2587         int pipe, err;
2588         void *buf;
2589
2590         buf = kzalloc(4, GFP_KERNEL);
2591         if (!buf)
2592                 return -ENOMEM;
2593
2594         put_unaligned_le32(val, buf);
2595
2596         pipe = usb_sndctrlpipe(data->udev, 0);
2597         err = usb_control_msg(data->udev, pipe, 0x02,
2598                               0x5E,
2599                               reg >> 16, reg & 0xffff,
2600                               buf, 4, USB_CTRL_SET_TIMEOUT);
2601         if (err < 0) {
2602                 bt_dev_err(hdev, "Failed to write uhw reg(%d)", err);
2603                 goto err_free_buf;
2604         }
2605
2606 err_free_buf:
2607         kfree(buf);
2608
2609         return err;
2610 }
2611
2612 static int btusb_mtk_uhw_reg_read(struct btusb_data *data, u32 reg, u32 *val)
2613 {
2614         struct hci_dev *hdev = data->hdev;
2615         int pipe, err;
2616         void *buf;
2617
2618         buf = kzalloc(4, GFP_KERNEL);
2619         if (!buf)
2620                 return -ENOMEM;
2621
2622         pipe = usb_rcvctrlpipe(data->udev, 0);
2623         err = usb_control_msg(data->udev, pipe, 0x01,
2624                               0xDE,
2625                               reg >> 16, reg & 0xffff,
2626                               buf, 4, USB_CTRL_SET_TIMEOUT);
2627         if (err < 0) {
2628                 bt_dev_err(hdev, "Failed to read uhw reg(%d)", err);
2629                 goto err_free_buf;
2630         }
2631
2632         *val = get_unaligned_le32(buf);
2633         bt_dev_dbg(hdev, "reg=%x, value=0x%08x", reg, *val);
2634
2635 err_free_buf:
2636         kfree(buf);
2637
2638         return err;
2639 }
2640
2641 static int btusb_mtk_reg_read(struct btusb_data *data, u32 reg, u32 *val)
2642 {
2643         int pipe, err, size = sizeof(u32);
2644         void *buf;
2645
2646         buf = kzalloc(size, GFP_KERNEL);
2647         if (!buf)
2648                 return -ENOMEM;
2649
2650         pipe = usb_rcvctrlpipe(data->udev, 0);
2651         err = usb_control_msg(data->udev, pipe, 0x63,
2652                               USB_TYPE_VENDOR | USB_DIR_IN,
2653                               reg >> 16, reg & 0xffff,
2654                               buf, size, USB_CTRL_SET_TIMEOUT);
2655         if (err < 0)
2656                 goto err_free_buf;
2657
2658         *val = get_unaligned_le32(buf);
2659
2660 err_free_buf:
2661         kfree(buf);
2662
2663         return err;
2664 }
2665
2666 static int btusb_mtk_id_get(struct btusb_data *data, u32 reg, u32 *id)
2667 {
2668         return btusb_mtk_reg_read(data, reg, id);
2669 }
2670
2671 static int btusb_mtk_setup(struct hci_dev *hdev)
2672 {
2673         struct btusb_data *data = hci_get_drvdata(hdev);
2674         struct btmtk_hci_wmt_params wmt_params;
2675         ktime_t calltime, delta, rettime;
2676         struct btmtk_tci_sleep tci_sleep;
2677         unsigned long long duration;
2678         struct sk_buff *skb;
2679         const char *fwname;
2680         int err, status;
2681         u32 dev_id;
2682         char fw_bin_name[64];
2683         u32 fw_version = 0;
2684         u8 param;
2685
2686         calltime = ktime_get();
2687
2688         err = btusb_mtk_id_get(data, 0x80000008, &dev_id);
2689         if (err < 0) {
2690                 bt_dev_err(hdev, "Failed to get device id (%d)", err);
2691                 return err;
2692         }
2693
2694         if (!dev_id) {
2695                 err = btusb_mtk_id_get(data, 0x70010200, &dev_id);
2696                 if (err < 0) {
2697                         bt_dev_err(hdev, "Failed to get device id (%d)", err);
2698                         return err;
2699                 }
2700                 err = btusb_mtk_id_get(data, 0x80021004, &fw_version);
2701                 if (err < 0) {
2702                         bt_dev_err(hdev, "Failed to get fw version (%d)", err);
2703                         return err;
2704                 }
2705         }
2706
2707         switch (dev_id) {
2708         case 0x7663:
2709                 fwname = FIRMWARE_MT7663;
2710                 break;
2711         case 0x7668:
2712                 fwname = FIRMWARE_MT7668;
2713                 break;
2714         case 0x7922:
2715         case 0x7961:
2716                 snprintf(fw_bin_name, sizeof(fw_bin_name),
2717                         "mediatek/BT_RAM_CODE_MT%04x_1_%x_hdr.bin",
2718                          dev_id & 0xffff, (fw_version & 0xff) + 1);
2719                 err = btmtk_setup_firmware_79xx(hdev, fw_bin_name,
2720                                                 btusb_mtk_hci_wmt_sync);
2721                 if (err < 0) {
2722                         bt_dev_err(hdev, "Failed to set up firmware (%d)", err);
2723                         return err;
2724                 }
2725
2726                 /* It's Device EndPoint Reset Option Register */
2727                 btusb_mtk_uhw_reg_write(data, MTK_EP_RST_OPT, MTK_EP_RST_IN_OUT_OPT);
2728
2729                 /* Enable Bluetooth protocol */
2730                 param = 1;
2731                 wmt_params.op = BTMTK_WMT_FUNC_CTRL;
2732                 wmt_params.flag = 0;
2733                 wmt_params.dlen = sizeof(param);
2734                 wmt_params.data = &param;
2735                 wmt_params.status = NULL;
2736
2737                 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2738                 if (err < 0) {
2739                         bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
2740                         return err;
2741                 }
2742
2743                 hci_set_msft_opcode(hdev, 0xFD30);
2744                 hci_set_aosp_capable(hdev);
2745                 goto done;
2746         default:
2747                 bt_dev_err(hdev, "Unsupported hardware variant (%08x)",
2748                            dev_id);
2749                 return -ENODEV;
2750         }
2751
2752         /* Query whether the firmware is already download */
2753         wmt_params.op = BTMTK_WMT_SEMAPHORE;
2754         wmt_params.flag = 1;
2755         wmt_params.dlen = 0;
2756         wmt_params.data = NULL;
2757         wmt_params.status = &status;
2758
2759         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2760         if (err < 0) {
2761                 bt_dev_err(hdev, "Failed to query firmware status (%d)", err);
2762                 return err;
2763         }
2764
2765         if (status == BTMTK_WMT_PATCH_DONE) {
2766                 bt_dev_info(hdev, "firmware already downloaded");
2767                 goto ignore_setup_fw;
2768         }
2769
2770         /* Setup a firmware which the device definitely requires */
2771         err = btmtk_setup_firmware(hdev, fwname,
2772                                    btusb_mtk_hci_wmt_sync);
2773         if (err < 0)
2774                 return err;
2775
2776 ignore_setup_fw:
2777         err = readx_poll_timeout(btusb_mtk_func_query, hdev, status,
2778                                  status < 0 || status != BTMTK_WMT_ON_PROGRESS,
2779                                  2000, 5000000);
2780         /* -ETIMEDOUT happens */
2781         if (err < 0)
2782                 return err;
2783
2784         /* The other errors happen in btusb_mtk_func_query */
2785         if (status < 0)
2786                 return status;
2787
2788         if (status == BTMTK_WMT_ON_DONE) {
2789                 bt_dev_info(hdev, "function already on");
2790                 goto ignore_func_on;
2791         }
2792
2793         /* Enable Bluetooth protocol */
2794         param = 1;
2795         wmt_params.op = BTMTK_WMT_FUNC_CTRL;
2796         wmt_params.flag = 0;
2797         wmt_params.dlen = sizeof(param);
2798         wmt_params.data = &param;
2799         wmt_params.status = NULL;
2800
2801         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2802         if (err < 0) {
2803                 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
2804                 return err;
2805         }
2806
2807 ignore_func_on:
2808         /* Apply the low power environment setup */
2809         tci_sleep.mode = 0x5;
2810         tci_sleep.duration = cpu_to_le16(0x640);
2811         tci_sleep.host_duration = cpu_to_le16(0x640);
2812         tci_sleep.host_wakeup_pin = 0;
2813         tci_sleep.time_compensation = 0;
2814
2815         skb = __hci_cmd_sync(hdev, 0xfc7a, sizeof(tci_sleep), &tci_sleep,
2816                              HCI_INIT_TIMEOUT);
2817         if (IS_ERR(skb)) {
2818                 err = PTR_ERR(skb);
2819                 bt_dev_err(hdev, "Failed to apply low power setting (%d)", err);
2820                 return err;
2821         }
2822         kfree_skb(skb);
2823
2824 done:
2825         rettime = ktime_get();
2826         delta = ktime_sub(rettime, calltime);
2827         duration = (unsigned long long)ktime_to_ns(delta) >> 10;
2828
2829         bt_dev_info(hdev, "Device setup in %llu usecs", duration);
2830
2831         return 0;
2832 }
2833
2834 static int btusb_mtk_shutdown(struct hci_dev *hdev)
2835 {
2836         struct btmtk_hci_wmt_params wmt_params;
2837         u8 param = 0;
2838         int err;
2839
2840         /* Disable the device */
2841         wmt_params.op = BTMTK_WMT_FUNC_CTRL;
2842         wmt_params.flag = 0;
2843         wmt_params.dlen = sizeof(param);
2844         wmt_params.data = &param;
2845         wmt_params.status = NULL;
2846
2847         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2848         if (err < 0) {
2849                 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
2850                 return err;
2851         }
2852
2853         return 0;
2854 }
2855
2856 static void btusb_mtk_cmd_timeout(struct hci_dev *hdev)
2857 {
2858         struct btusb_data *data = hci_get_drvdata(hdev);
2859         u32 val;
2860         int err, retry = 0;
2861
2862         /* It's MediaTek specific bluetooth reset mechanism via USB */
2863         if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
2864                 bt_dev_err(hdev, "last reset failed? Not resetting again");
2865                 return;
2866         }
2867
2868         err = usb_autopm_get_interface(data->intf);
2869         if (err < 0)
2870                 return;
2871
2872         btusb_stop_traffic(data);
2873         usb_kill_anchored_urbs(&data->tx_anchor);
2874
2875         /* It's Device EndPoint Reset Option Register */
2876         bt_dev_dbg(hdev, "Initiating reset mechanism via uhw");
2877         btusb_mtk_uhw_reg_write(data, MTK_EP_RST_OPT, MTK_EP_RST_IN_OUT_OPT);
2878         btusb_mtk_uhw_reg_read(data, MTK_BT_WDT_STATUS, &val);
2879
2880         /* Reset the bluetooth chip via USB interface. */
2881         btusb_mtk_uhw_reg_write(data, MTK_BT_SUBSYS_RST, 1);
2882         btusb_mtk_uhw_reg_write(data, MTK_UDMA_INT_STA_BT, 0x000000FF);
2883         btusb_mtk_uhw_reg_read(data, MTK_UDMA_INT_STA_BT, &val);
2884         btusb_mtk_uhw_reg_write(data, MTK_UDMA_INT_STA_BT1, 0x000000FF);
2885         btusb_mtk_uhw_reg_read(data, MTK_UDMA_INT_STA_BT1, &val);
2886         /* MT7921 need to delay 20ms between toggle reset bit */
2887         msleep(20);
2888         btusb_mtk_uhw_reg_write(data, MTK_BT_SUBSYS_RST, 0);
2889         btusb_mtk_uhw_reg_read(data, MTK_BT_SUBSYS_RST, &val);
2890
2891         /* Poll the register until reset is completed */
2892         do {
2893                 btusb_mtk_uhw_reg_read(data, MTK_BT_MISC, &val);
2894                 if (val & MTK_BT_RST_DONE) {
2895                         bt_dev_dbg(hdev, "Bluetooth Reset Successfully");
2896                         break;
2897                 }
2898
2899                 bt_dev_dbg(hdev, "Polling Bluetooth Reset CR");
2900                 retry++;
2901                 msleep(MTK_BT_RESET_WAIT_MS);
2902         } while (retry < MTK_BT_RESET_NUM_TRIES);
2903
2904         btusb_mtk_id_get(data, 0x70010200, &val);
2905         if (!val)
2906                 bt_dev_err(hdev, "Can't get device id, subsys reset fail.");
2907
2908         usb_queue_reset_device(data->intf);
2909
2910         clear_bit(BTUSB_HW_RESET_ACTIVE, &data->flags);
2911 }
2912
2913 static int btusb_recv_acl_mtk(struct hci_dev *hdev, struct sk_buff *skb)
2914 {
2915         struct btusb_data *data = hci_get_drvdata(hdev);
2916         u16 handle = le16_to_cpu(hci_acl_hdr(skb)->handle);
2917
2918         switch (handle) {
2919         case 0xfc6f:            /* Firmware dump from device */
2920                 /* When the firmware hangs, the device can no longer
2921                  * suspend and thus disable auto-suspend.
2922                  */
2923                 usb_disable_autosuspend(data->udev);
2924                 fallthrough;
2925         case 0x05ff:            /* Firmware debug logging 1 */
2926         case 0x05fe:            /* Firmware debug logging 2 */
2927                 return hci_recv_diag(hdev, skb);
2928         }
2929
2930         return hci_recv_frame(hdev, skb);
2931 }
2932
2933 #ifdef CONFIG_PM
2934 /* Configure an out-of-band gpio as wake-up pin, if specified in device tree */
2935 static int marvell_config_oob_wake(struct hci_dev *hdev)
2936 {
2937         struct sk_buff *skb;
2938         struct btusb_data *data = hci_get_drvdata(hdev);
2939         struct device *dev = &data->udev->dev;
2940         u16 pin, gap, opcode;
2941         int ret;
2942         u8 cmd[5];
2943
2944         /* Move on if no wakeup pin specified */
2945         if (of_property_read_u16(dev->of_node, "marvell,wakeup-pin", &pin) ||
2946             of_property_read_u16(dev->of_node, "marvell,wakeup-gap-ms", &gap))
2947                 return 0;
2948
2949         /* Vendor specific command to configure a GPIO as wake-up pin */
2950         opcode = hci_opcode_pack(0x3F, 0x59);
2951         cmd[0] = opcode & 0xFF;
2952         cmd[1] = opcode >> 8;
2953         cmd[2] = 2; /* length of parameters that follow */
2954         cmd[3] = pin;
2955         cmd[4] = gap; /* time in ms, for which wakeup pin should be asserted */
2956
2957         skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
2958         if (!skb) {
2959                 bt_dev_err(hdev, "%s: No memory", __func__);
2960                 return -ENOMEM;
2961         }
2962
2963         skb_put_data(skb, cmd, sizeof(cmd));
2964         hci_skb_pkt_type(skb) = HCI_COMMAND_PKT;
2965
2966         ret = btusb_send_frame(hdev, skb);
2967         if (ret) {
2968                 bt_dev_err(hdev, "%s: configuration failed", __func__);
2969                 kfree_skb(skb);
2970                 return ret;
2971         }
2972
2973         return 0;
2974 }
2975 #endif
2976
2977 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
2978                                     const bdaddr_t *bdaddr)
2979 {
2980         struct sk_buff *skb;
2981         u8 buf[8];
2982         long ret;
2983
2984         buf[0] = 0xfe;
2985         buf[1] = sizeof(bdaddr_t);
2986         memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
2987
2988         skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2989         if (IS_ERR(skb)) {
2990                 ret = PTR_ERR(skb);
2991                 bt_dev_err(hdev, "changing Marvell device address failed (%ld)",
2992                            ret);
2993                 return ret;
2994         }
2995         kfree_skb(skb);
2996
2997         return 0;
2998 }
2999
3000 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
3001                                     const bdaddr_t *bdaddr)
3002 {
3003         struct sk_buff *skb;
3004         u8 buf[10];
3005         long ret;
3006
3007         buf[0] = 0x01;
3008         buf[1] = 0x01;
3009         buf[2] = 0x00;
3010         buf[3] = sizeof(bdaddr_t);
3011         memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
3012
3013         skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
3014         if (IS_ERR(skb)) {
3015                 ret = PTR_ERR(skb);
3016                 bt_dev_err(hdev, "Change address command failed (%ld)", ret);
3017                 return ret;
3018         }
3019         kfree_skb(skb);
3020
3021         return 0;
3022 }
3023
3024 static int btusb_set_bdaddr_wcn6855(struct hci_dev *hdev,
3025                                 const bdaddr_t *bdaddr)
3026 {
3027         struct sk_buff *skb;
3028         u8 buf[6];
3029         long ret;
3030
3031         memcpy(buf, bdaddr, sizeof(bdaddr_t));
3032
3033         skb = __hci_cmd_sync_ev(hdev, 0xfc14, sizeof(buf), buf,
3034                                 HCI_EV_CMD_COMPLETE, HCI_INIT_TIMEOUT);
3035         if (IS_ERR(skb)) {
3036                 ret = PTR_ERR(skb);
3037                 bt_dev_err(hdev, "Change address command failed (%ld)", ret);
3038                 return ret;
3039         }
3040         kfree_skb(skb);
3041
3042         return 0;
3043 }
3044
3045 #define QCA_DFU_PACKET_LEN      4096
3046
3047 #define QCA_GET_TARGET_VERSION  0x09
3048 #define QCA_CHECK_STATUS        0x05
3049 #define QCA_DFU_DOWNLOAD        0x01
3050
3051 #define QCA_SYSCFG_UPDATED      0x40
3052 #define QCA_PATCH_UPDATED       0x80
3053 #define QCA_DFU_TIMEOUT         3000
3054 #define QCA_FLAG_MULTI_NVM      0x80
3055 #define QCA_BT_RESET_WAIT_MS    100
3056
3057 #define WCN6855_2_0_RAM_VERSION_GF 0x400c1200
3058 #define WCN6855_2_1_RAM_VERSION_GF 0x400c1211
3059
3060 struct qca_version {
3061         __le32  rom_version;
3062         __le32  patch_version;
3063         __le32  ram_version;
3064         __u8    chip_id;
3065         __u8    platform_id;
3066         __le16  flag;
3067         __u8    reserved[4];
3068 } __packed;
3069
3070 struct qca_rampatch_version {
3071         __le16  rom_version_high;
3072         __le16  rom_version_low;
3073         __le16  patch_version;
3074 } __packed;
3075
3076 struct qca_device_info {
3077         u32     rom_version;
3078         u8      rampatch_hdr;   /* length of header in rampatch */
3079         u8      nvm_hdr;        /* length of header in NVM */
3080         u8      ver_offset;     /* offset of version structure in rampatch */
3081 };
3082
3083 static const struct qca_device_info qca_devices_table[] = {
3084         { 0x00000100, 20, 4,  8 }, /* Rome 1.0 */
3085         { 0x00000101, 20, 4,  8 }, /* Rome 1.1 */
3086         { 0x00000200, 28, 4, 16 }, /* Rome 2.0 */
3087         { 0x00000201, 28, 4, 16 }, /* Rome 2.1 */
3088         { 0x00000300, 28, 4, 16 }, /* Rome 3.0 */
3089         { 0x00000302, 28, 4, 16 }, /* Rome 3.2 */
3090         { 0x00130100, 40, 4, 16 }, /* WCN6855 1.0 */
3091         { 0x00130200, 40, 4, 16 }, /* WCN6855 2.0 */
3092         { 0x00130201, 40, 4, 16 }, /* WCN6855 2.1 */
3093         { 0x00190200, 40, 4, 16 }, /* WCN785x 2.0 */
3094 };
3095
3096 static int btusb_qca_send_vendor_req(struct usb_device *udev, u8 request,
3097                                      void *data, u16 size)
3098 {
3099         int pipe, err;
3100         u8 *buf;
3101
3102         buf = kmalloc(size, GFP_KERNEL);
3103         if (!buf)
3104                 return -ENOMEM;
3105
3106         /* Found some of USB hosts have IOT issues with ours so that we should
3107          * not wait until HCI layer is ready.
3108          */
3109         pipe = usb_rcvctrlpipe(udev, 0);
3110         err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
3111                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
3112         if (err < 0) {
3113                 dev_err(&udev->dev, "Failed to access otp area (%d)", err);
3114                 goto done;
3115         }
3116
3117         memcpy(data, buf, size);
3118
3119 done:
3120         kfree(buf);
3121
3122         return err;
3123 }
3124
3125 static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
3126                                        const struct firmware *firmware,
3127                                        size_t hdr_size)
3128 {
3129         struct btusb_data *btdata = hci_get_drvdata(hdev);
3130         struct usb_device *udev = btdata->udev;
3131         size_t count, size, sent = 0;
3132         int pipe, len, err;
3133         u8 *buf;
3134
3135         buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
3136         if (!buf)
3137                 return -ENOMEM;
3138
3139         count = firmware->size;
3140
3141         size = min_t(size_t, count, hdr_size);
3142         memcpy(buf, firmware->data, size);
3143
3144         /* USB patches should go down to controller through USB path
3145          * because binary format fits to go down through USB channel.
3146          * USB control path is for patching headers and USB bulk is for
3147          * patch body.
3148          */
3149         pipe = usb_sndctrlpipe(udev, 0);
3150         err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
3151                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
3152         if (err < 0) {
3153                 bt_dev_err(hdev, "Failed to send headers (%d)", err);
3154                 goto done;
3155         }
3156
3157         sent += size;
3158         count -= size;
3159
3160         /* ep2 need time to switch from function acl to function dfu,
3161          * so we add 20ms delay here.
3162          */
3163         msleep(20);
3164
3165         while (count) {
3166                 size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
3167
3168                 memcpy(buf, firmware->data + sent, size);
3169
3170                 pipe = usb_sndbulkpipe(udev, 0x02);
3171                 err = usb_bulk_msg(udev, pipe, buf, size, &len,
3172                                    QCA_DFU_TIMEOUT);
3173                 if (err < 0) {
3174                         bt_dev_err(hdev, "Failed to send body at %zd of %zd (%d)",
3175                                    sent, firmware->size, err);
3176                         break;
3177                 }
3178
3179                 if (size != len) {
3180                         bt_dev_err(hdev, "Failed to get bulk buffer");
3181                         err = -EILSEQ;
3182                         break;
3183                 }
3184
3185                 sent  += size;
3186                 count -= size;
3187         }
3188
3189 done:
3190         kfree(buf);
3191         return err;
3192 }
3193
3194 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
3195                                          struct qca_version *ver,
3196                                          const struct qca_device_info *info)
3197 {
3198         struct qca_rampatch_version *rver;
3199         const struct firmware *fw;
3200         u32 ver_rom, ver_patch, rver_rom;
3201         u16 rver_rom_low, rver_rom_high, rver_patch;
3202         char fwname[64];
3203         int err;
3204
3205         ver_rom = le32_to_cpu(ver->rom_version);
3206         ver_patch = le32_to_cpu(ver->patch_version);
3207
3208         snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom);
3209
3210         err = request_firmware(&fw, fwname, &hdev->dev);
3211         if (err) {
3212                 bt_dev_err(hdev, "failed to request rampatch file: %s (%d)",
3213                            fwname, err);
3214                 return err;
3215         }
3216
3217         bt_dev_info(hdev, "using rampatch file: %s", fwname);
3218
3219         rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
3220         rver_rom_low = le16_to_cpu(rver->rom_version_low);
3221         rver_patch = le16_to_cpu(rver->patch_version);
3222
3223         if (ver_rom & ~0xffffU) {
3224                 rver_rom_high = le16_to_cpu(rver->rom_version_high);
3225                 rver_rom = le32_to_cpu(rver_rom_high << 16 | rver_rom_low);
3226         } else {
3227                 rver_rom = rver_rom_low;
3228         }
3229
3230         bt_dev_info(hdev, "QCA: patch rome 0x%x build 0x%x, "
3231                     "firmware rome 0x%x build 0x%x",
3232                     rver_rom, rver_patch, ver_rom, ver_patch);
3233
3234         if (rver_rom != ver_rom || rver_patch <= ver_patch) {
3235                 bt_dev_err(hdev, "rampatch file version did not match with firmware");
3236                 err = -EINVAL;
3237                 goto done;
3238         }
3239
3240         err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
3241
3242 done:
3243         release_firmware(fw);
3244
3245         return err;
3246 }
3247
3248 static void btusb_generate_qca_nvm_name(char *fwname, size_t max_size,
3249                                         const struct qca_version *ver)
3250 {
3251         u32 rom_version = le32_to_cpu(ver->rom_version);
3252         u16 flag = le16_to_cpu(ver->flag);
3253
3254         if (((flag >> 8) & 0xff) == QCA_FLAG_MULTI_NVM) {
3255                 /* The board_id should be split into two bytes
3256                  * The 1st byte is chip ID, and the 2nd byte is platform ID
3257                  * For example, board ID 0x010A, 0x01 is platform ID. 0x0A is chip ID
3258                  * we have several platforms, and platform IDs are continuously added
3259                  * Platform ID:
3260                  * 0x00 is for Mobile
3261                  * 0x01 is for X86
3262                  * 0x02 is for Automotive
3263                  * 0x03 is for Consumer electronic
3264                  */
3265                 u16 board_id = (ver->chip_id << 8) + ver->platform_id;
3266                 const char *variant;
3267
3268                 switch (le32_to_cpu(ver->ram_version)) {
3269                 case WCN6855_2_0_RAM_VERSION_GF:
3270                 case WCN6855_2_1_RAM_VERSION_GF:
3271                         variant = "_gf";
3272                         break;
3273                 default:
3274                         variant = "";
3275                         break;
3276                 }
3277
3278                 if (board_id == 0) {
3279                         snprintf(fwname, max_size, "qca/nvm_usb_%08x%s.bin",
3280                                 rom_version, variant);
3281                 } else {
3282                         snprintf(fwname, max_size, "qca/nvm_usb_%08x%s_%04x.bin",
3283                                 rom_version, variant, board_id);
3284                 }
3285         } else {
3286                 snprintf(fwname, max_size, "qca/nvm_usb_%08x.bin",
3287                         rom_version);
3288         }
3289
3290 }
3291
3292 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
3293                                     struct qca_version *ver,
3294                                     const struct qca_device_info *info)
3295 {
3296         const struct firmware *fw;
3297         char fwname[64];
3298         int err;
3299
3300         btusb_generate_qca_nvm_name(fwname, sizeof(fwname), ver);
3301
3302         err = request_firmware(&fw, fwname, &hdev->dev);
3303         if (err) {
3304                 bt_dev_err(hdev, "failed to request NVM file: %s (%d)",
3305                            fwname, err);
3306                 return err;
3307         }
3308
3309         bt_dev_info(hdev, "using NVM file: %s", fwname);
3310
3311         err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
3312
3313         release_firmware(fw);
3314
3315         return err;
3316 }
3317
3318 /* identify the ROM version and check whether patches are needed */
3319 static bool btusb_qca_need_patch(struct usb_device *udev)
3320 {
3321         struct qca_version ver;
3322
3323         if (btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3324                                       sizeof(ver)) < 0)
3325                 return false;
3326         /* only low ROM versions need patches */
3327         return !(le32_to_cpu(ver.rom_version) & ~0xffffU);
3328 }
3329
3330 static int btusb_setup_qca(struct hci_dev *hdev)
3331 {
3332         struct btusb_data *btdata = hci_get_drvdata(hdev);
3333         struct usb_device *udev = btdata->udev;
3334         const struct qca_device_info *info = NULL;
3335         struct qca_version ver;
3336         u32 ver_rom;
3337         u8 status;
3338         int i, err;
3339
3340         err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3341                                         sizeof(ver));
3342         if (err < 0)
3343                 return err;
3344
3345         ver_rom = le32_to_cpu(ver.rom_version);
3346
3347         for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
3348                 if (ver_rom == qca_devices_table[i].rom_version)
3349                         info = &qca_devices_table[i];
3350         }
3351         if (!info) {
3352                 /* If the rom_version is not matched in the qca_devices_table
3353                  * and the high ROM version is not zero, we assume this chip no
3354                  * need to load the rampatch and nvm.
3355                  */
3356                 if (ver_rom & ~0xffffU)
3357                         return 0;
3358
3359                 bt_dev_err(hdev, "don't support firmware rome 0x%x", ver_rom);
3360                 return -ENODEV;
3361         }
3362
3363         err = btusb_qca_send_vendor_req(udev, QCA_CHECK_STATUS, &status,
3364                                         sizeof(status));
3365         if (err < 0)
3366                 return err;
3367
3368         if (!(status & QCA_PATCH_UPDATED)) {
3369                 err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
3370                 if (err < 0)
3371                         return err;
3372         }
3373
3374         err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3375                                         sizeof(ver));
3376         if (err < 0)
3377                 return err;
3378
3379         if (!(status & QCA_SYSCFG_UPDATED)) {
3380                 err = btusb_setup_qca_load_nvm(hdev, &ver, info);
3381                 if (err < 0)
3382                         return err;
3383
3384                 /* WCN6855 2.1 and later will reset to apply firmware downloaded here, so
3385                  * wait ~100ms for reset Done then go ahead, otherwise, it maybe
3386                  * cause potential enable failure.
3387                  */
3388                 if (info->rom_version >= 0x00130201)
3389                         msleep(QCA_BT_RESET_WAIT_MS);
3390         }
3391
3392         /* Mark HCI_OP_ENHANCED_SETUP_SYNC_CONN as broken as it doesn't seem to
3393          * work with the likes of HSP/HFP mSBC.
3394          */
3395         set_bit(HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN, &hdev->quirks);
3396
3397         return 0;
3398 }
3399
3400 static inline int __set_diag_interface(struct hci_dev *hdev)
3401 {
3402         struct btusb_data *data = hci_get_drvdata(hdev);
3403         struct usb_interface *intf = data->diag;
3404         int i;
3405
3406         if (!data->diag)
3407                 return -ENODEV;
3408
3409         data->diag_tx_ep = NULL;
3410         data->diag_rx_ep = NULL;
3411
3412         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
3413                 struct usb_endpoint_descriptor *ep_desc;
3414
3415                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
3416
3417                 if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
3418                         data->diag_tx_ep = ep_desc;
3419                         continue;
3420                 }
3421
3422                 if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
3423                         data->diag_rx_ep = ep_desc;
3424                         continue;
3425                 }
3426         }
3427
3428         if (!data->diag_tx_ep || !data->diag_rx_ep) {
3429                 bt_dev_err(hdev, "invalid diagnostic descriptors");
3430                 return -ENODEV;
3431         }
3432
3433         return 0;
3434 }
3435
3436 static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable)
3437 {
3438         struct btusb_data *data = hci_get_drvdata(hdev);
3439         struct sk_buff *skb;
3440         struct urb *urb;
3441         unsigned int pipe;
3442
3443         if (!data->diag_tx_ep)
3444                 return ERR_PTR(-ENODEV);
3445
3446         urb = usb_alloc_urb(0, GFP_KERNEL);
3447         if (!urb)
3448                 return ERR_PTR(-ENOMEM);
3449
3450         skb = bt_skb_alloc(2, GFP_KERNEL);
3451         if (!skb) {
3452                 usb_free_urb(urb);
3453                 return ERR_PTR(-ENOMEM);
3454         }
3455
3456         skb_put_u8(skb, 0xf0);
3457         skb_put_u8(skb, enable);
3458
3459         pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress);
3460
3461         usb_fill_bulk_urb(urb, data->udev, pipe,
3462                           skb->data, skb->len, btusb_tx_complete, skb);
3463
3464         skb->dev = (void *)hdev;
3465
3466         return urb;
3467 }
3468
3469 static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable)
3470 {
3471         struct btusb_data *data = hci_get_drvdata(hdev);
3472         struct urb *urb;
3473
3474         if (!data->diag)
3475                 return -ENODEV;
3476
3477         if (!test_bit(HCI_RUNNING, &hdev->flags))
3478                 return -ENETDOWN;
3479
3480         urb = alloc_diag_urb(hdev, enable);
3481         if (IS_ERR(urb))
3482                 return PTR_ERR(urb);
3483
3484         return submit_or_queue_tx_urb(hdev, urb);
3485 }
3486
3487 #ifdef CONFIG_PM
3488 static irqreturn_t btusb_oob_wake_handler(int irq, void *priv)
3489 {
3490         struct btusb_data *data = priv;
3491
3492         pm_wakeup_event(&data->udev->dev, 0);
3493         pm_system_wakeup();
3494
3495         /* Disable only if not already disabled (keep it balanced) */
3496         if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
3497                 disable_irq_nosync(irq);
3498                 disable_irq_wake(irq);
3499         }
3500         return IRQ_HANDLED;
3501 }
3502
3503 static const struct of_device_id btusb_match_table[] = {
3504         { .compatible = "usb1286,204e" },
3505         { .compatible = "usbcf3,e300" }, /* QCA6174A */
3506         { .compatible = "usb4ca,301a" }, /* QCA6174A (Lite-On) */
3507         { }
3508 };
3509 MODULE_DEVICE_TABLE(of, btusb_match_table);
3510
3511 /* Use an oob wakeup pin? */
3512 static int btusb_config_oob_wake(struct hci_dev *hdev)
3513 {
3514         struct btusb_data *data = hci_get_drvdata(hdev);
3515         struct device *dev = &data->udev->dev;
3516         int irq, ret;
3517
3518         clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
3519
3520         if (!of_match_device(btusb_match_table, dev))
3521                 return 0;
3522
3523         /* Move on if no IRQ specified */
3524         irq = of_irq_get_byname(dev->of_node, "wakeup");
3525         if (irq <= 0) {
3526                 bt_dev_dbg(hdev, "%s: no OOB Wakeup IRQ in DT", __func__);
3527                 return 0;
3528         }
3529
3530         irq_set_status_flags(irq, IRQ_NOAUTOEN);
3531         ret = devm_request_irq(&hdev->dev, irq, btusb_oob_wake_handler,
3532                                0, "OOB Wake-on-BT", data);
3533         if (ret) {
3534                 bt_dev_err(hdev, "%s: IRQ request failed", __func__);
3535                 return ret;
3536         }
3537
3538         ret = device_init_wakeup(dev, true);
3539         if (ret) {
3540                 bt_dev_err(hdev, "%s: failed to init_wakeup", __func__);
3541                 return ret;
3542         }
3543
3544         data->oob_wake_irq = irq;
3545         bt_dev_info(hdev, "OOB Wake-on-BT configured at IRQ %u", irq);
3546         return 0;
3547 }
3548 #endif
3549
3550 static void btusb_check_needs_reset_resume(struct usb_interface *intf)
3551 {
3552         if (dmi_check_system(btusb_needs_reset_resume_table))
3553                 interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME;
3554 }
3555
3556 static bool btusb_wakeup(struct hci_dev *hdev)
3557 {
3558         struct btusb_data *data = hci_get_drvdata(hdev);
3559
3560         return device_may_wakeup(&data->udev->dev);
3561 }
3562
3563 static int btusb_shutdown_qca(struct hci_dev *hdev)
3564 {
3565         struct sk_buff *skb;
3566
3567         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
3568         if (IS_ERR(skb)) {
3569                 bt_dev_err(hdev, "HCI reset during shutdown failed");
3570                 return PTR_ERR(skb);
3571         }
3572         kfree_skb(skb);
3573
3574         return 0;
3575 }
3576
3577 static ssize_t force_poll_sync_read(struct file *file, char __user *user_buf,
3578                                     size_t count, loff_t *ppos)
3579 {
3580         struct btusb_data *data = file->private_data;
3581         char buf[3];
3582
3583         buf[0] = data->poll_sync ? 'Y' : 'N';
3584         buf[1] = '\n';
3585         buf[2] = '\0';
3586         return simple_read_from_buffer(user_buf, count, ppos, buf, 2);
3587 }
3588
3589 static ssize_t force_poll_sync_write(struct file *file,
3590                                      const char __user *user_buf,
3591                                      size_t count, loff_t *ppos)
3592 {
3593         struct btusb_data *data = file->private_data;
3594         bool enable;
3595         int err;
3596
3597         err = kstrtobool_from_user(user_buf, count, &enable);
3598         if (err)
3599                 return err;
3600
3601         /* Only allow changes while the adapter is down */
3602         if (test_bit(HCI_UP, &data->hdev->flags))
3603                 return -EPERM;
3604
3605         if (data->poll_sync == enable)
3606                 return -EALREADY;
3607
3608         data->poll_sync = enable;
3609
3610         return count;
3611 }
3612
3613 static const struct file_operations force_poll_sync_fops = {
3614         .open           = simple_open,
3615         .read           = force_poll_sync_read,
3616         .write          = force_poll_sync_write,
3617         .llseek         = default_llseek,
3618 };
3619
3620 static int btusb_probe(struct usb_interface *intf,
3621                        const struct usb_device_id *id)
3622 {
3623         struct usb_endpoint_descriptor *ep_desc;
3624         struct gpio_desc *reset_gpio;
3625         struct btusb_data *data;
3626         struct hci_dev *hdev;
3627         unsigned ifnum_base;
3628         int i, err, priv_size;
3629
3630         BT_DBG("intf %p id %p", intf, id);
3631
3632         /* interface numbers are hardcoded in the spec */
3633         if (intf->cur_altsetting->desc.bInterfaceNumber != 0) {
3634                 if (!(id->driver_info & BTUSB_IFNUM_2))
3635                         return -ENODEV;
3636                 if (intf->cur_altsetting->desc.bInterfaceNumber != 2)
3637                         return -ENODEV;
3638         }
3639
3640         ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber;
3641
3642         if (!id->driver_info) {
3643                 const struct usb_device_id *match;
3644
3645                 match = usb_match_id(intf, blacklist_table);
3646                 if (match)
3647                         id = match;
3648         }
3649
3650         if (id->driver_info == BTUSB_IGNORE)
3651                 return -ENODEV;
3652
3653         if (id->driver_info & BTUSB_ATH3012) {
3654                 struct usb_device *udev = interface_to_usbdev(intf);
3655
3656                 /* Old firmware would otherwise let ath3k driver load
3657                  * patch and sysconfig files
3658                  */
3659                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001 &&
3660                     !btusb_qca_need_patch(udev))
3661                         return -ENODEV;
3662         }
3663
3664         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
3665         if (!data)
3666                 return -ENOMEM;
3667
3668         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
3669                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
3670
3671                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
3672                         data->intr_ep = ep_desc;
3673                         continue;
3674                 }
3675
3676                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
3677                         data->bulk_tx_ep = ep_desc;
3678                         continue;
3679                 }
3680
3681                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
3682                         data->bulk_rx_ep = ep_desc;
3683                         continue;
3684                 }
3685         }
3686
3687         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
3688                 return -ENODEV;
3689
3690         if (id->driver_info & BTUSB_AMP) {
3691                 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
3692                 data->cmdreq = 0x2b;
3693         } else {
3694                 data->cmdreq_type = USB_TYPE_CLASS;
3695                 data->cmdreq = 0x00;
3696         }
3697
3698         data->udev = interface_to_usbdev(intf);
3699         data->intf = intf;
3700
3701         INIT_WORK(&data->work, btusb_work);
3702         INIT_WORK(&data->waker, btusb_waker);
3703         INIT_DELAYED_WORK(&data->rx_work, btusb_rx_work);
3704
3705         skb_queue_head_init(&data->acl_q);
3706
3707         init_usb_anchor(&data->deferred);
3708         init_usb_anchor(&data->tx_anchor);
3709         spin_lock_init(&data->txlock);
3710
3711         init_usb_anchor(&data->intr_anchor);
3712         init_usb_anchor(&data->bulk_anchor);
3713         init_usb_anchor(&data->isoc_anchor);
3714         init_usb_anchor(&data->diag_anchor);
3715         init_usb_anchor(&data->ctrl_anchor);
3716         spin_lock_init(&data->rxlock);
3717
3718         priv_size = 0;
3719
3720         data->recv_event = hci_recv_frame;
3721         data->recv_bulk = btusb_recv_bulk;
3722
3723         if (id->driver_info & BTUSB_INTEL_COMBINED) {
3724                 /* Allocate extra space for Intel device */
3725                 priv_size += sizeof(struct btintel_data);
3726
3727                 /* Override the rx handlers */
3728                 data->recv_event = btusb_recv_event_intel;
3729                 data->recv_bulk = btusb_recv_bulk_intel;
3730         }
3731
3732         data->recv_acl = hci_recv_frame;
3733
3734         hdev = hci_alloc_dev_priv(priv_size);
3735         if (!hdev)
3736                 return -ENOMEM;
3737
3738         hdev->bus = HCI_USB;
3739         hci_set_drvdata(hdev, data);
3740
3741         if (id->driver_info & BTUSB_AMP)
3742                 hdev->dev_type = HCI_AMP;
3743         else
3744                 hdev->dev_type = HCI_PRIMARY;
3745
3746         data->hdev = hdev;
3747
3748         SET_HCIDEV_DEV(hdev, &intf->dev);
3749
3750         reset_gpio = gpiod_get_optional(&data->udev->dev, "reset",
3751                                         GPIOD_OUT_LOW);
3752         if (IS_ERR(reset_gpio)) {
3753                 err = PTR_ERR(reset_gpio);
3754                 goto out_free_dev;
3755         } else if (reset_gpio) {
3756                 data->reset_gpio = reset_gpio;
3757         }
3758
3759         hdev->open   = btusb_open;
3760         hdev->close  = btusb_close;
3761         hdev->flush  = btusb_flush;
3762         hdev->send   = btusb_send_frame;
3763         hdev->notify = btusb_notify;
3764         hdev->wakeup = btusb_wakeup;
3765
3766 #ifdef CONFIG_PM
3767         err = btusb_config_oob_wake(hdev);
3768         if (err)
3769                 goto out_free_dev;
3770
3771         /* Marvell devices may need a specific chip configuration */
3772         if (id->driver_info & BTUSB_MARVELL && data->oob_wake_irq) {
3773                 err = marvell_config_oob_wake(hdev);
3774                 if (err)
3775                         goto out_free_dev;
3776         }
3777 #endif
3778         if (id->driver_info & BTUSB_CW6622)
3779                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
3780
3781         if (id->driver_info & BTUSB_BCM2045)
3782                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
3783
3784         if (id->driver_info & BTUSB_BCM92035)
3785                 hdev->setup = btusb_setup_bcm92035;
3786
3787         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) &&
3788             (id->driver_info & BTUSB_BCM_PATCHRAM)) {
3789                 hdev->manufacturer = 15;
3790                 hdev->setup = btbcm_setup_patchram;
3791                 hdev->set_diag = btusb_bcm_set_diag;
3792                 hdev->set_bdaddr = btbcm_set_bdaddr;
3793
3794                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
3795                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
3796         }
3797
3798         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) &&
3799             (id->driver_info & BTUSB_BCM_APPLE)) {
3800                 hdev->manufacturer = 15;
3801                 hdev->setup = btbcm_setup_apple;
3802                 hdev->set_diag = btusb_bcm_set_diag;
3803
3804                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
3805                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
3806         }
3807
3808         /* Combined Intel Device setup to support multiple setup routine */
3809         if (id->driver_info & BTUSB_INTEL_COMBINED) {
3810                 err = btintel_configure_setup(hdev);
3811                 if (err)
3812                         goto out_free_dev;
3813
3814                 /* Transport specific configuration */
3815                 hdev->send = btusb_send_frame_intel;
3816                 hdev->cmd_timeout = btusb_intel_cmd_timeout;
3817
3818                 if (id->driver_info & BTUSB_INTEL_NO_WBS_SUPPORT)
3819                         btintel_set_flag(hdev, INTEL_ROM_LEGACY_NO_WBS_SUPPORT);
3820
3821                 if (id->driver_info & BTUSB_INTEL_BROKEN_INITIAL_NCMD)
3822                         btintel_set_flag(hdev, INTEL_BROKEN_INITIAL_NCMD);
3823
3824                 if (id->driver_info & BTUSB_INTEL_BROKEN_SHUTDOWN_LED)
3825                         btintel_set_flag(hdev, INTEL_BROKEN_SHUTDOWN_LED);
3826         }
3827
3828         if (id->driver_info & BTUSB_MARVELL)
3829                 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
3830
3831         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_MTK) &&
3832             (id->driver_info & BTUSB_MEDIATEK)) {
3833                 hdev->setup = btusb_mtk_setup;
3834                 hdev->shutdown = btusb_mtk_shutdown;
3835                 hdev->manufacturer = 70;
3836                 hdev->cmd_timeout = btusb_mtk_cmd_timeout;
3837                 hdev->set_bdaddr = btmtk_set_bdaddr;
3838                 set_bit(HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN, &hdev->quirks);
3839                 set_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks);
3840                 data->recv_acl = btusb_recv_acl_mtk;
3841         }
3842
3843         if (id->driver_info & BTUSB_SWAVE) {
3844                 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
3845                 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
3846         }
3847
3848         if (id->driver_info & BTUSB_INTEL_BOOT) {
3849                 hdev->manufacturer = 2;
3850                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3851         }
3852
3853         if (id->driver_info & BTUSB_ATH3012) {
3854                 data->setup_on_usb = btusb_setup_qca;
3855                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
3856                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3857                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3858         }
3859
3860         if (id->driver_info & BTUSB_QCA_ROME) {
3861                 data->setup_on_usb = btusb_setup_qca;
3862                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
3863                 hdev->cmd_timeout = btusb_qca_cmd_timeout;
3864                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3865                 btusb_check_needs_reset_resume(intf);
3866         }
3867
3868         if (id->driver_info & BTUSB_QCA_WCN6855) {
3869                 data->setup_on_usb = btusb_setup_qca;
3870                 hdev->shutdown = btusb_shutdown_qca;
3871                 hdev->set_bdaddr = btusb_set_bdaddr_wcn6855;
3872                 hdev->cmd_timeout = btusb_qca_cmd_timeout;
3873                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3874                 hci_set_msft_opcode(hdev, 0xFD70);
3875         }
3876
3877         if (id->driver_info & BTUSB_AMP) {
3878                 /* AMP controllers do not support SCO packets */
3879                 data->isoc = NULL;
3880         } else {
3881                 /* Interface orders are hardcoded in the specification */
3882                 data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1);
3883                 data->isoc_ifnum = ifnum_base + 1;
3884         }
3885
3886         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_RTL) &&
3887             (id->driver_info & BTUSB_REALTEK)) {
3888                 hdev->setup = btrtl_setup_realtek;
3889                 hdev->shutdown = btrtl_shutdown_realtek;
3890                 hdev->cmd_timeout = btusb_rtl_cmd_timeout;
3891
3892                 /* Realtek devices need to set remote wakeup on auto-suspend */
3893                 set_bit(BTUSB_WAKEUP_AUTOSUSPEND, &data->flags);
3894                 set_bit(BTUSB_USE_ALT3_FOR_WBS, &data->flags);
3895         }
3896
3897         if (!reset)
3898                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3899
3900         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
3901                 if (!disable_scofix)
3902                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
3903         }
3904
3905         if (id->driver_info & BTUSB_BROKEN_ISOC)
3906                 data->isoc = NULL;
3907
3908         if (id->driver_info & BTUSB_WIDEBAND_SPEECH)
3909                 set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED, &hdev->quirks);
3910
3911         if (id->driver_info & BTUSB_VALID_LE_STATES)
3912                 set_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks);
3913
3914         if (id->driver_info & BTUSB_DIGIANSWER) {
3915                 data->cmdreq_type = USB_TYPE_VENDOR;
3916                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3917         }
3918
3919         if (id->driver_info & BTUSB_CSR) {
3920                 struct usb_device *udev = data->udev;
3921                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
3922
3923                 /* Old firmware would otherwise execute USB reset */
3924                 if (bcdDevice < 0x117)
3925                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3926
3927                 /* This must be set first in case we disable it for fakes */
3928                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3929
3930                 /* Fake CSR devices with broken commands */
3931                 if (le16_to_cpu(udev->descriptor.idVendor)  == 0x0a12 &&
3932                     le16_to_cpu(udev->descriptor.idProduct) == 0x0001)
3933                         hdev->setup = btusb_setup_csr;
3934         }
3935
3936         if (id->driver_info & BTUSB_SNIFFER) {
3937                 struct usb_device *udev = data->udev;
3938
3939                 /* New sniffer firmware has crippled HCI interface */
3940                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
3941                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3942         }
3943
3944         if (id->driver_info & BTUSB_INTEL_BOOT) {
3945                 /* A bug in the bootloader causes that interrupt interface is
3946                  * only enabled after receiving SetInterface(0, AltSetting=0).
3947                  */
3948                 err = usb_set_interface(data->udev, 0, 0);
3949                 if (err < 0) {
3950                         BT_ERR("failed to set interface 0, alt 0 %d", err);
3951                         goto out_free_dev;
3952                 }
3953         }
3954
3955         if (data->isoc) {
3956                 err = usb_driver_claim_interface(&btusb_driver,
3957                                                  data->isoc, data);
3958                 if (err < 0)
3959                         goto out_free_dev;
3960         }
3961
3962         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) && data->diag) {
3963                 if (!usb_driver_claim_interface(&btusb_driver,
3964                                                 data->diag, data))
3965                         __set_diag_interface(hdev);
3966                 else
3967                         data->diag = NULL;
3968         }
3969
3970         if (enable_autosuspend)
3971                 usb_enable_autosuspend(data->udev);
3972
3973         err = hci_register_dev(hdev);
3974         if (err < 0)
3975                 goto out_free_dev;
3976
3977         usb_set_intfdata(intf, data);
3978
3979         debugfs_create_file("force_poll_sync", 0644, hdev->debugfs, data,
3980                             &force_poll_sync_fops);
3981
3982         return 0;
3983
3984 out_free_dev:
3985         if (data->reset_gpio)
3986                 gpiod_put(data->reset_gpio);
3987         hci_free_dev(hdev);
3988         return err;
3989 }
3990
3991 static void btusb_disconnect(struct usb_interface *intf)
3992 {
3993         struct btusb_data *data = usb_get_intfdata(intf);
3994         struct hci_dev *hdev;
3995
3996         BT_DBG("intf %p", intf);
3997
3998         if (!data)
3999                 return;
4000
4001         hdev = data->hdev;
4002         usb_set_intfdata(data->intf, NULL);
4003
4004         if (data->isoc)
4005                 usb_set_intfdata(data->isoc, NULL);
4006
4007         if (data->diag)
4008                 usb_set_intfdata(data->diag, NULL);
4009
4010         hci_unregister_dev(hdev);
4011
4012         if (intf == data->intf) {
4013                 if (data->isoc)
4014                         usb_driver_release_interface(&btusb_driver, data->isoc);
4015                 if (data->diag)
4016                         usb_driver_release_interface(&btusb_driver, data->diag);
4017         } else if (intf == data->isoc) {
4018                 if (data->diag)
4019                         usb_driver_release_interface(&btusb_driver, data->diag);
4020                 usb_driver_release_interface(&btusb_driver, data->intf);
4021         } else if (intf == data->diag) {
4022                 usb_driver_release_interface(&btusb_driver, data->intf);
4023                 if (data->isoc)
4024                         usb_driver_release_interface(&btusb_driver, data->isoc);
4025         }
4026
4027         if (data->oob_wake_irq)
4028                 device_init_wakeup(&data->udev->dev, false);
4029
4030         if (data->reset_gpio)
4031                 gpiod_put(data->reset_gpio);
4032
4033         hci_free_dev(hdev);
4034 }
4035
4036 #ifdef CONFIG_PM
4037 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
4038 {
4039         struct btusb_data *data = usb_get_intfdata(intf);
4040
4041         BT_DBG("intf %p", intf);
4042
4043         if (data->suspend_count++)
4044                 return 0;
4045
4046         spin_lock_irq(&data->txlock);
4047         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
4048                 set_bit(BTUSB_SUSPENDING, &data->flags);
4049                 spin_unlock_irq(&data->txlock);
4050         } else {
4051                 spin_unlock_irq(&data->txlock);
4052                 data->suspend_count--;
4053                 return -EBUSY;
4054         }
4055
4056         cancel_work_sync(&data->work);
4057
4058         btusb_stop_traffic(data);
4059         usb_kill_anchored_urbs(&data->tx_anchor);
4060
4061         if (data->oob_wake_irq && device_may_wakeup(&data->udev->dev)) {
4062                 set_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
4063                 enable_irq_wake(data->oob_wake_irq);
4064                 enable_irq(data->oob_wake_irq);
4065         }
4066
4067         /* For global suspend, Realtek devices lose the loaded fw
4068          * in them. But for autosuspend, firmware should remain.
4069          * Actually, it depends on whether the usb host sends
4070          * set feature (enable wakeup) or not.
4071          */
4072         if (test_bit(BTUSB_WAKEUP_AUTOSUSPEND, &data->flags)) {
4073                 if (PMSG_IS_AUTO(message) &&
4074                     device_can_wakeup(&data->udev->dev))
4075                         data->udev->do_remote_wakeup = 1;
4076                 else if (!PMSG_IS_AUTO(message) &&
4077                          !device_may_wakeup(&data->udev->dev)) {
4078                         data->udev->do_remote_wakeup = 0;
4079                         data->udev->reset_resume = 1;
4080                 }
4081         }
4082
4083         return 0;
4084 }
4085
4086 static void play_deferred(struct btusb_data *data)
4087 {
4088         struct urb *urb;
4089         int err;
4090
4091         while ((urb = usb_get_from_anchor(&data->deferred))) {
4092                 usb_anchor_urb(urb, &data->tx_anchor);
4093
4094                 err = usb_submit_urb(urb, GFP_ATOMIC);
4095                 if (err < 0) {
4096                         if (err != -EPERM && err != -ENODEV)
4097                                 BT_ERR("%s urb %p submission failed (%d)",
4098                                        data->hdev->name, urb, -err);
4099                         kfree(urb->setup_packet);
4100                         usb_unanchor_urb(urb);
4101                         usb_free_urb(urb);
4102                         break;
4103                 }
4104
4105                 data->tx_in_flight++;
4106                 usb_free_urb(urb);
4107         }
4108
4109         /* Cleanup the rest deferred urbs. */
4110         while ((urb = usb_get_from_anchor(&data->deferred))) {
4111                 kfree(urb->setup_packet);
4112                 usb_free_urb(urb);
4113         }
4114 }
4115
4116 static int btusb_resume(struct usb_interface *intf)
4117 {
4118         struct btusb_data *data = usb_get_intfdata(intf);
4119         struct hci_dev *hdev = data->hdev;
4120         int err = 0;
4121
4122         BT_DBG("intf %p", intf);
4123
4124         if (--data->suspend_count)
4125                 return 0;
4126
4127         /* Disable only if not already disabled (keep it balanced) */
4128         if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
4129                 disable_irq(data->oob_wake_irq);
4130                 disable_irq_wake(data->oob_wake_irq);
4131         }
4132
4133         if (!test_bit(HCI_RUNNING, &hdev->flags))
4134                 goto done;
4135
4136         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
4137                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
4138                 if (err < 0) {
4139                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
4140                         goto failed;
4141                 }
4142         }
4143
4144         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
4145                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
4146                 if (err < 0) {
4147                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
4148                         goto failed;
4149                 }
4150
4151                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
4152         }
4153
4154         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
4155                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
4156                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
4157                 else
4158                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
4159         }
4160
4161         spin_lock_irq(&data->txlock);
4162         play_deferred(data);
4163         clear_bit(BTUSB_SUSPENDING, &data->flags);
4164         spin_unlock_irq(&data->txlock);
4165         schedule_work(&data->work);
4166
4167         return 0;
4168
4169 failed:
4170         usb_scuttle_anchored_urbs(&data->deferred);
4171 done:
4172         spin_lock_irq(&data->txlock);
4173         clear_bit(BTUSB_SUSPENDING, &data->flags);
4174         spin_unlock_irq(&data->txlock);
4175
4176         return err;
4177 }
4178 #endif
4179
4180 static struct usb_driver btusb_driver = {
4181         .name           = "btusb",
4182         .probe          = btusb_probe,
4183         .disconnect     = btusb_disconnect,
4184 #ifdef CONFIG_PM
4185         .suspend        = btusb_suspend,
4186         .resume         = btusb_resume,
4187 #endif
4188         .id_table       = btusb_table,
4189         .supports_autosuspend = 1,
4190         .disable_hub_initiated_lpm = 1,
4191 };
4192
4193 module_usb_driver(btusb_driver);
4194
4195 module_param(disable_scofix, bool, 0644);
4196 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
4197
4198 module_param(force_scofix, bool, 0644);
4199 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
4200
4201 module_param(enable_autosuspend, bool, 0644);
4202 MODULE_PARM_DESC(enable_autosuspend, "Enable USB autosuspend by default");
4203
4204 module_param(reset, bool, 0644);
4205 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
4206
4207 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
4208 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
4209 MODULE_VERSION(VERSION);
4210 MODULE_LICENSE("GPL");