drivers/bluetooth/btusb.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  *
   4  *  Generic Bluetooth USB driver
   5  *
   6  *  Copyright (C) 2005-2008  Marcel Holtmann <marcel@holtmann.org>
   7  */
   8
   9 #include <linux/dmi.h>
  10 #include <linux/module.h>
  11 #include <linux/usb.h>
  12 #include <linux/usb/quirks.h>
  13 #include <linux/firmware.h>
  14 #include <linux/iopoll.h>
  15 #include <linux/of_device.h>
  16 #include <linux/of_irq.h>
  17 #include <linux/suspend.h>
  18 #include <linux/gpio/consumer.h>
  19 #include <asm/unaligned.h>
  20
  21 #include <net/bluetooth/bluetooth.h>
  22 #include <net/bluetooth/hci_core.h>
  23
  24 #include "btintel.h"
  25 #include "btbcm.h"
  26 #include "btrtl.h"
  27
  28 #define VERSION "0.8"
  29
  30 static bool disable_scofix;
  31 static bool force_scofix;
  32 static bool enable_autosuspend = IS_ENABLED(CONFIG_BT_HCIBTUSB_AUTOSUSPEND);
  33
  34 static bool reset = true;
  35
  36 static struct usb_driver btusb_driver;
  37
  38 #define BTUSB_IGNORE            0x01
  39 #define BTUSB_DIGIANSWER        0x02
  40 #define BTUSB_CSR               0x04
  41 #define BTUSB_SNIFFER           0x08
  42 #define BTUSB_BCM92035          0x10
  43 #define BTUSB_BROKEN_ISOC       0x20
  44 #define BTUSB_WRONG_SCO_MTU     0x40
  45 #define BTUSB_ATH3012           0x80
  46 #define BTUSB_INTEL             0x100
  47 #define BTUSB_INTEL_BOOT        0x200
  48 #define BTUSB_BCM_PATCHRAM      0x400
  49 #define BTUSB_MARVELL           0x800
  50 #define BTUSB_SWAVE             0x1000
  51 #define BTUSB_INTEL_NEW         0x2000
  52 #define BTUSB_AMP               0x4000
  53 #define BTUSB_QCA_ROME          0x8000
  54 #define BTUSB_BCM_APPLE         0x10000
  55 #define BTUSB_REALTEK           0x20000
  56 #define BTUSB_BCM2045           0x40000
  57 #define BTUSB_IFNUM_2           0x80000
  58 #define BTUSB_CW6622            0x100000
  59 #define BTUSB_MEDIATEK          0x200000
  60 #define BTUSB_WIDEBAND_SPEECH   0x400000
  61 #define BTUSB_VALID_LE_STATES   0x800000
  62
  63 static const struct usb_device_id btusb_table[] = {
  64         /* Generic Bluetooth USB device */
  65         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  66
  67         /* Generic Bluetooth AMP device */
  68         { USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP },
  69
  70         /* Generic Bluetooth USB interface */
  71         { USB_INTERFACE_INFO(0xe0, 0x01, 0x01) },
  72
  73         /* Apple-specific (Broadcom) devices */
  74         { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01),
  75           .driver_info = BTUSB_BCM_APPLE | BTUSB_IFNUM_2 },
  76
  77         /* MediaTek MT76x0E */
  78         { USB_DEVICE(0x0e8d, 0x763f) },
  79
  80         /* Broadcom SoftSailing reporting vendor specific */
  81         { USB_DEVICE(0x0a5c, 0x21e1) },
  82
  83         /* Apple MacBookPro 7,1 */
  84         { USB_DEVICE(0x05ac, 0x8213) },
  85
  86         /* Apple iMac11,1 */
  87         { USB_DEVICE(0x05ac, 0x8215) },
  88
  89         /* Apple MacBookPro6,2 */
  90         { USB_DEVICE(0x05ac, 0x8218) },
  91
  92         /* Apple MacBookAir3,1, MacBookAir3,2 */
  93         { USB_DEVICE(0x05ac, 0x821b) },
  94
  95         /* Apple MacBookAir4,1 */
  96         { USB_DEVICE(0x05ac, 0x821f) },
  97
  98         /* Apple MacBookPro8,2 */
  99         { USB_DEVICE(0x05ac, 0x821a) },
 100
 101         /* Apple MacMini5,1 */
 102         { USB_DEVICE(0x05ac, 0x8281) },
 103
 104         /* AVM BlueFRITZ! USB v2.0 */
 105         { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE },
 106
 107         /* Bluetooth Ultraport Module from IBM */
 108         { USB_DEVICE(0x04bf, 0x030a) },
 109
 110         /* ALPS Modules with non-standard id */
 111         { USB_DEVICE(0x044e, 0x3001) },
 112         { USB_DEVICE(0x044e, 0x3002) },
 113
 114         /* Ericsson with non-standard id */
 115         { USB_DEVICE(0x0bdb, 0x1002) },
 116
 117         /* Canyon CN-BTU1 with HID interfaces */
 118         { USB_DEVICE(0x0c10, 0x0000) },
 119
 120         /* Broadcom BCM20702A0 */
 121         { USB_DEVICE(0x413c, 0x8197) },
 122
 123         /* Broadcom BCM20702B0 (Dynex/Insignia) */
 124         { USB_DEVICE(0x19ff, 0x0239), .driver_info = BTUSB_BCM_PATCHRAM },
 125
 126         /* Broadcom BCM43142A0 (Foxconn/Lenovo) */
 127         { USB_VENDOR_AND_INTERFACE_INFO(0x105b, 0xff, 0x01, 0x01),
 128           .driver_info = BTUSB_BCM_PATCHRAM },
 129
 130         /* Broadcom BCM920703 (HTC Vive) */
 131         { USB_VENDOR_AND_INTERFACE_INFO(0x0bb4, 0xff, 0x01, 0x01),
 132           .driver_info = BTUSB_BCM_PATCHRAM },
 133
 134         /* Foxconn - Hon Hai */
 135         { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01),
 136           .driver_info = BTUSB_BCM_PATCHRAM },
 137
 138         /* Lite-On Technology - Broadcom based */
 139         { USB_VENDOR_AND_INTERFACE_INFO(0x04ca, 0xff, 0x01, 0x01),
 140           .driver_info = BTUSB_BCM_PATCHRAM },
 141
 142         /* Broadcom devices with vendor specific id */
 143         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
 144           .driver_info = BTUSB_BCM_PATCHRAM },
 145
 146         /* ASUSTek Computer - Broadcom based */
 147         { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01),
 148           .driver_info = BTUSB_BCM_PATCHRAM },
 149
 150         /* Belkin F8065bf - Broadcom based */
 151         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01),
 152           .driver_info = BTUSB_BCM_PATCHRAM },
 153
 154         /* IMC Networks - Broadcom based */
 155         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01),
 156           .driver_info = BTUSB_BCM_PATCHRAM },
 157
 158         /* Dell Computer - Broadcom based  */
 159         { USB_VENDOR_AND_INTERFACE_INFO(0x413c, 0xff, 0x01, 0x01),
 160           .driver_info = BTUSB_BCM_PATCHRAM },
 161
 162         /* Toshiba Corp - Broadcom based */
 163         { USB_VENDOR_AND_INTERFACE_INFO(0x0930, 0xff, 0x01, 0x01),
 164           .driver_info = BTUSB_BCM_PATCHRAM },
 165
 166         /* Intel Bluetooth USB Bootloader (RAM module) */
 167         { USB_DEVICE(0x8087, 0x0a5a),
 168           .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
 169
 170         { }     /* Terminating entry */
 171 };
 172
 173 MODULE_DEVICE_TABLE(usb, btusb_table);
 174
 175 static const struct usb_device_id blacklist_table[] = {
 176         /* CSR BlueCore devices */
 177         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 178
 179         /* Broadcom BCM2033 without firmware */
 180         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 181
 182         /* Broadcom BCM2045 devices */
 183         { USB_DEVICE(0x0a5c, 0x2045), .driver_info = BTUSB_BCM2045 },
 184
 185         /* Atheros 3011 with sflash firmware */
 186         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 187         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 188         { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE },
 189         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 190         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 191         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 192         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 193
 194         /* Atheros AR9285 Malbec with sflash firmware */
 195         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 196
 197         /* Atheros 3012 with sflash firmware */
 198         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 199         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 200         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 201         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 202         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 203         { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
 204         { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
 205         { USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 },
 206         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 207         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 208         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 209         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 210         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 211         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 212         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 213         { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
 214         { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
 215         { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
 216         { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 },
 217         { USB_DEVICE(0x04ca, 0x3018), .driver_info = BTUSB_ATH3012 },
 218         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 219         { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
 220         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 221         { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
 222         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 223         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 224         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 225         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 226         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 227         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
 228         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 229         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 230         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 231         { USB_DEVICE(0x0cf3, 0x817b), .driver_info = BTUSB_ATH3012 },
 232         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 233         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 234         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 235         { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 },
 236         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 237         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 238         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 239         { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 },
 240         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 241         { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
 242         { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
 243         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
 244         { USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 },
 245         { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
 246         { USB_DEVICE(0x13d3, 0x3487), .driver_info = BTUSB_ATH3012 },
 247         { USB_DEVICE(0x13d3, 0x3490), .driver_info = BTUSB_ATH3012 },
 248
 249         /* Atheros AR5BBU12 with sflash firmware */
 250         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 251
 252         /* Atheros AR5BBU12 with sflash firmware */
 253         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 254         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 255
 256         /* QCA ROME chipset */
 257         { USB_DEVICE(0x0cf3, 0x535b), .driver_info = BTUSB_QCA_ROME },
 258         { USB_DEVICE(0x0cf3, 0xe007), .driver_info = BTUSB_QCA_ROME },
 259         { USB_DEVICE(0x0cf3, 0xe009), .driver_info = BTUSB_QCA_ROME },
 260         { USB_DEVICE(0x0cf3, 0xe010), .driver_info = BTUSB_QCA_ROME },
 261         { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME },
 262         { USB_DEVICE(0x0cf3, 0xe301), .driver_info = BTUSB_QCA_ROME },
 263         { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME },
 264         { USB_DEVICE(0x0489, 0xe092), .driver_info = BTUSB_QCA_ROME },
 265         { USB_DEVICE(0x0489, 0xe09f), .driver_info = BTUSB_QCA_ROME },
 266         { USB_DEVICE(0x0489, 0xe0a2), .driver_info = BTUSB_QCA_ROME },
 267         { USB_DEVICE(0x04ca, 0x3011), .driver_info = BTUSB_QCA_ROME },
 268         { USB_DEVICE(0x04ca, 0x3015), .driver_info = BTUSB_QCA_ROME },
 269         { USB_DEVICE(0x04ca, 0x3016), .driver_info = BTUSB_QCA_ROME },
 270         { USB_DEVICE(0x04ca, 0x301a), .driver_info = BTUSB_QCA_ROME },
 271         { USB_DEVICE(0x04ca, 0x3021), .driver_info = BTUSB_QCA_ROME },
 272         { USB_DEVICE(0x13d3, 0x3491), .driver_info = BTUSB_QCA_ROME },
 273         { USB_DEVICE(0x13d3, 0x3496), .driver_info = BTUSB_QCA_ROME },
 274         { USB_DEVICE(0x13d3, 0x3501), .driver_info = BTUSB_QCA_ROME },
 275
 276         /* Broadcom BCM2035 */
 277         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 278         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 279         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 280
 281         /* Broadcom BCM2045 */
 282         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 283         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 284
 285         /* IBM/Lenovo ThinkPad with Broadcom chip */
 286         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 287         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 288
 289         /* HP laptop with Broadcom chip */
 290         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 291
 292         /* Dell laptop with Broadcom chip */
 293         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 294
 295         /* Dell Wireless 370 and 410 devices */
 296         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 297         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 298
 299         /* Belkin F8T012 and F8T013 devices */
 300         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 301         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 302
 303         /* Asus WL-BTD202 device */
 304         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 305
 306         /* Kensington Bluetooth USB adapter */
 307         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 308
 309         /* RTX Telecom based adapters with buggy SCO support */
 310         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 311         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 312
 313         /* CONWISE Technology based adapters with buggy SCO support */
 314         { USB_DEVICE(0x0e5e, 0x6622),
 315           .driver_info = BTUSB_BROKEN_ISOC | BTUSB_CW6622},
 316
 317         /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
 318         { USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE },
 319
 320         /* Digianswer devices */
 321         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 322         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 323
 324         /* CSR BlueCore Bluetooth Sniffer */
 325         { USB_DEVICE(0x0a12, 0x0002),
 326           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 327
 328         /* Frontline ComProbe Bluetooth Sniffer */
 329         { USB_DEVICE(0x16d3, 0x0002),
 330           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 331
 332         /* Marvell Bluetooth devices */
 333         { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
 334         { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
 335         { USB_DEVICE(0x1286, 0x204e), .driver_info = BTUSB_MARVELL },
 336
 337         /* Intel Bluetooth devices */
 338         { USB_DEVICE(0x8087, 0x0025), .driver_info = BTUSB_INTEL_NEW |
 339                                                      BTUSB_WIDEBAND_SPEECH },
 340         { USB_DEVICE(0x8087, 0x0026), .driver_info = BTUSB_INTEL_NEW |
 341                                                      BTUSB_WIDEBAND_SPEECH },
 342         { USB_DEVICE(0x8087, 0x0029), .driver_info = BTUSB_INTEL_NEW |
 343                                                      BTUSB_WIDEBAND_SPEECH },
 344         { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR },
 345         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 346         { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
 347         { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_NEW |
 348                                                      BTUSB_WIDEBAND_SPEECH },
 349         { USB_DEVICE(0x8087, 0x0aa7), .driver_info = BTUSB_INTEL |
 350                                                      BTUSB_WIDEBAND_SPEECH },
 351         { USB_DEVICE(0x8087, 0x0aaa), .driver_info = BTUSB_INTEL_NEW |
 352                                                      BTUSB_WIDEBAND_SPEECH },
 353
 354         /* Other Intel Bluetooth devices */
 355         { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01),
 356           .driver_info = BTUSB_IGNORE },
 357
 358         /* Realtek Bluetooth devices */
 359         { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01),
 360           .driver_info = BTUSB_REALTEK },
 361
 362         /* MediaTek Bluetooth devices */
 363         { USB_VENDOR_AND_INTERFACE_INFO(0x0e8d, 0xe0, 0x01, 0x01),
 364           .driver_info = BTUSB_MEDIATEK },
 365
 366         /* Additional Realtek 8723AE Bluetooth devices */
 367         { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK },
 368         { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK },
 369
 370         /* Additional Realtek 8723BE Bluetooth devices */
 371         { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK },
 372         { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK },
 373         { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
 374         { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
 375         { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },
 376         { USB_DEVICE(0x13d3, 0x3494), .driver_info = BTUSB_REALTEK },
 377
 378         /* Additional Realtek 8723BU Bluetooth devices */
 379         { USB_DEVICE(0x7392, 0xa611), .driver_info = BTUSB_REALTEK },
 380
 381         /* Additional Realtek 8723DE Bluetooth devices */
 382         { USB_DEVICE(0x0bda, 0xb009), .driver_info = BTUSB_REALTEK },
 383         { USB_DEVICE(0x2ff8, 0xb011), .driver_info = BTUSB_REALTEK },
 384
 385         /* Additional Realtek 8821AE Bluetooth devices */
 386         { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
 387         { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },
 388         { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK },
 389         { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK },
 390         { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK },
 391
 392         /* Additional Realtek 8822BE Bluetooth devices */
 393         { USB_DEVICE(0x13d3, 0x3526), .driver_info = BTUSB_REALTEK },
 394         { USB_DEVICE(0x0b05, 0x185c), .driver_info = BTUSB_REALTEK },
 395
 396         /* Additional Realtek 8822CE Bluetooth devices */
 397         { USB_DEVICE(0x04ca, 0x4005), .driver_info = BTUSB_REALTEK },
 398         { USB_DEVICE(0x13d3, 0x3548), .driver_info = BTUSB_REALTEK },
 399
 400         /* Silicon Wave based devices */
 401         { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE },
 402
 403         { }     /* Terminating entry */
 404 };
 405
 406 /* The Bluetooth USB module build into some devices needs to be reset on resume,
 407  * this is a problem with the platform (likely shutting off all power) not with
 408  * the module itself. So we use a DMI list to match known broken platforms.
 409  */
 410 static const struct dmi_system_id btusb_needs_reset_resume_table[] = {
 411         {
 412                 /* Dell OptiPlex 3060 (QCA ROME device 0cf3:e007) */
 413                 .matches = {
 414                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 415                         DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 3060"),
 416                 },
 417         },
 418         {
 419                 /* Dell XPS 9360 (QCA ROME device 0cf3:e300) */
 420                 .matches = {
 421                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 422                         DMI_MATCH(DMI_PRODUCT_NAME, "XPS 13 9360"),
 423                 },
 424         },
 425         {
 426                 /* Dell Inspiron 5565 (QCA ROME device 0cf3:e009) */
 427                 .matches = {
 428                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 429                         DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5565"),
 430                 },
 431         },
 432         {}
 433 };
 434
 435 #define BTUSB_MAX_ISOC_FRAMES   10
 436
 437 #define BTUSB_INTR_RUNNING      0
 438 #define BTUSB_BULK_RUNNING      1
 439 #define BTUSB_ISOC_RUNNING      2
 440 #define BTUSB_SUSPENDING        3
 441 #define BTUSB_DID_ISO_RESUME    4
 442 #define BTUSB_BOOTLOADER        5
 443 #define BTUSB_DOWNLOADING       6
 444 #define BTUSB_FIRMWARE_LOADED   7
 445 #define BTUSB_FIRMWARE_FAILED   8
 446 #define BTUSB_BOOTING           9
 447 #define BTUSB_DIAG_RUNNING      10
 448 #define BTUSB_OOB_WAKE_ENABLED  11
 449 #define BTUSB_HW_RESET_ACTIVE   12
 450 #define BTUSB_TX_WAIT_VND_EVT   13
 451 #define BTUSB_WAKEUP_DISABLE    14
 452
 453 struct btusb_data {
 454         struct hci_dev       *hdev;
 455         struct usb_device    *udev;
 456         struct usb_interface *intf;
 457         struct usb_interface *isoc;
 458         struct usb_interface *diag;
 459         unsigned isoc_ifnum;
 460
 461         unsigned long flags;
 462
 463         struct work_struct work;
 464         struct work_struct waker;
 465
 466         struct usb_anchor deferred;
 467         struct usb_anchor tx_anchor;
 468         int tx_in_flight;
 469         spinlock_t txlock;
 470
 471         struct usb_anchor intr_anchor;
 472         struct usb_anchor bulk_anchor;
 473         struct usb_anchor isoc_anchor;
 474         struct usb_anchor diag_anchor;
 475         struct usb_anchor ctrl_anchor;
 476         spinlock_t rxlock;
 477
 478         struct sk_buff *evt_skb;
 479         struct sk_buff *acl_skb;
 480         struct sk_buff *sco_skb;
 481
 482         struct usb_endpoint_descriptor *intr_ep;
 483         struct usb_endpoint_descriptor *bulk_tx_ep;
 484         struct usb_endpoint_descriptor *bulk_rx_ep;
 485         struct usb_endpoint_descriptor *isoc_tx_ep;
 486         struct usb_endpoint_descriptor *isoc_rx_ep;
 487         struct usb_endpoint_descriptor *diag_tx_ep;
 488         struct usb_endpoint_descriptor *diag_rx_ep;
 489
 490         struct gpio_desc *reset_gpio;
 491
 492         __u8 cmdreq_type;
 493         __u8 cmdreq;
 494
 495         unsigned int sco_num;
 496         int isoc_altsetting;
 497         int suspend_count;
 498
 499         int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
 500         int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
 501
 502         int (*setup_on_usb)(struct hci_dev *hdev);
 503
 504         int oob_wake_irq;   /* irq for out-of-band wake-on-bt */
 505         unsigned cmd_timeout_cnt;
 506 };
 507
 508
 509 static void btusb_intel_cmd_timeout(struct hci_dev *hdev)
 510 {
 511         struct btusb_data *data = hci_get_drvdata(hdev);
 512         struct gpio_desc *reset_gpio = data->reset_gpio;
 513
 514         if (++data->cmd_timeout_cnt < 5)
 515                 return;
 516
 517         if (!reset_gpio) {
 518                 bt_dev_err(hdev, "No way to reset. Ignoring and continuing");
 519                 return;
 520         }
 521
 522         /*
 523          * Toggle the hard reset line if the platform provides one. The reset
 524          * is going to yank the device off the USB and then replug. So doing
 525          * once is enough. The cleanup is handled correctly on the way out
 526          * (standard USB disconnect), and the new device is detected cleanly
 527          * and bound to the driver again like it should be.
 528          */
 529         if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
 530                 bt_dev_err(hdev, "last reset failed? Not resetting again");
 531                 return;
 532         }
 533
 534         bt_dev_err(hdev, "Initiating HW reset via gpio");
 535         gpiod_set_value_cansleep(reset_gpio, 1);
 536         msleep(100);
 537         gpiod_set_value_cansleep(reset_gpio, 0);
 538 }
 539
 540 static void btusb_rtl_cmd_timeout(struct hci_dev *hdev)
 541 {
 542         struct btusb_data *data = hci_get_drvdata(hdev);
 543         struct gpio_desc *reset_gpio = data->reset_gpio;
 544
 545         if (++data->cmd_timeout_cnt < 5)
 546                 return;
 547
 548         if (!reset_gpio) {
 549                 bt_dev_err(hdev, "No gpio to reset Realtek device, ignoring");
 550                 return;
 551         }
 552
 553         /* Toggle the hard reset line. The Realtek device is going to
 554          * yank itself off the USB and then replug. The cleanup is handled
 555          * correctly on the way out (standard USB disconnect), and the new
 556          * device is detected cleanly and bound to the driver again like
 557          * it should be.
 558          */
 559         if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
 560                 bt_dev_err(hdev, "last reset failed? Not resetting again");
 561                 return;
 562         }
 563
 564         bt_dev_err(hdev, "Reset Realtek device via gpio");
 565         gpiod_set_value_cansleep(reset_gpio, 1);
 566         msleep(200);
 567         gpiod_set_value_cansleep(reset_gpio, 0);
 568 }
 569
 570 static inline void btusb_free_frags(struct btusb_data *data)
 571 {
 572         unsigned long flags;
 573
 574         spin_lock_irqsave(&data->rxlock, flags);
 575
 576         kfree_skb(data->evt_skb);
 577         data->evt_skb = NULL;
 578
 579         kfree_skb(data->acl_skb);
 580         data->acl_skb = NULL;
 581
 582         kfree_skb(data->sco_skb);
 583         data->sco_skb = NULL;
 584
 585         spin_unlock_irqrestore(&data->rxlock, flags);
 586 }
 587
 588 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
 589 {
 590         struct sk_buff *skb;
 591         unsigned long flags;
 592         int err = 0;
 593
 594         spin_lock_irqsave(&data->rxlock, flags);
 595         skb = data->evt_skb;
 596
 597         while (count) {
 598                 int len;
 599
 600                 if (!skb) {
 601                         skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
 602                         if (!skb) {
 603                                 err = -ENOMEM;
 604                                 break;
 605                         }
 606
 607                         hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
 608                         hci_skb_expect(skb) = HCI_EVENT_HDR_SIZE;
 609                 }
 610
 611                 len = min_t(uint, hci_skb_expect(skb), count);
 612                 skb_put_data(skb, buffer, len);
 613
 614                 count -= len;
 615                 buffer += len;
 616                 hci_skb_expect(skb) -= len;
 617
 618                 if (skb->len == HCI_EVENT_HDR_SIZE) {
 619                         /* Complete event header */
 620                         hci_skb_expect(skb) = hci_event_hdr(skb)->plen;
 621
 622                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 623                                 kfree_skb(skb);
 624                                 skb = NULL;
 625
 626                                 err = -EILSEQ;
 627                                 break;
 628                         }
 629                 }
 630
 631                 if (!hci_skb_expect(skb)) {
 632                         /* Complete frame */
 633                         data->recv_event(data->hdev, skb);
 634                         skb = NULL;
 635                 }
 636         }
 637
 638         data->evt_skb = skb;
 639         spin_unlock_irqrestore(&data->rxlock, flags);
 640
 641         return err;
 642 }
 643
 644 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
 645 {
 646         struct sk_buff *skb;
 647         unsigned long flags;
 648         int err = 0;
 649
 650         spin_lock_irqsave(&data->rxlock, flags);
 651         skb = data->acl_skb;
 652
 653         while (count) {
 654                 int len;
 655
 656                 if (!skb) {
 657                         skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
 658                         if (!skb) {
 659                                 err = -ENOMEM;
 660                                 break;
 661                         }
 662
 663                         hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT;
 664                         hci_skb_expect(skb) = HCI_ACL_HDR_SIZE;
 665                 }
 666
 667                 len = min_t(uint, hci_skb_expect(skb), count);
 668                 skb_put_data(skb, buffer, len);
 669
 670                 count -= len;
 671                 buffer += len;
 672                 hci_skb_expect(skb) -= len;
 673
 674                 if (skb->len == HCI_ACL_HDR_SIZE) {
 675                         __le16 dlen = hci_acl_hdr(skb)->dlen;
 676
 677                         /* Complete ACL header */
 678                         hci_skb_expect(skb) = __le16_to_cpu(dlen);
 679
 680                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 681                                 kfree_skb(skb);
 682                                 skb = NULL;
 683
 684                                 err = -EILSEQ;
 685                                 break;
 686                         }
 687                 }
 688
 689                 if (!hci_skb_expect(skb)) {
 690                         /* Complete frame */
 691                         hci_recv_frame(data->hdev, skb);
 692                         skb = NULL;
 693                 }
 694         }
 695
 696         data->acl_skb = skb;
 697         spin_unlock_irqrestore(&data->rxlock, flags);
 698
 699         return err;
 700 }
 701
 702 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
 703 {
 704         struct sk_buff *skb;
 705         unsigned long flags;
 706         int err = 0;
 707
 708         spin_lock_irqsave(&data->rxlock, flags);
 709         skb = data->sco_skb;
 710
 711         while (count) {
 712                 int len;
 713
 714                 if (!skb) {
 715                         skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
 716                         if (!skb) {
 717                                 err = -ENOMEM;
 718                                 break;
 719                         }
 720
 721                         hci_skb_pkt_type(skb) = HCI_SCODATA_PKT;
 722                         hci_skb_expect(skb) = HCI_SCO_HDR_SIZE;
 723                 }
 724
 725                 len = min_t(uint, hci_skb_expect(skb), count);
 726                 skb_put_data(skb, buffer, len);
 727
 728                 count -= len;
 729                 buffer += len;
 730                 hci_skb_expect(skb) -= len;
 731
 732                 if (skb->len == HCI_SCO_HDR_SIZE) {
 733                         /* Complete SCO header */
 734                         hci_skb_expect(skb) = hci_sco_hdr(skb)->dlen;
 735
 736                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 737                                 kfree_skb(skb);
 738                                 skb = NULL;
 739
 740                                 err = -EILSEQ;
 741                                 break;
 742                         }
 743                 }
 744
 745                 if (!hci_skb_expect(skb)) {
 746                         /* Complete frame */
 747                         hci_recv_frame(data->hdev, skb);
 748                         skb = NULL;
 749                 }
 750         }
 751
 752         data->sco_skb = skb;
 753         spin_unlock_irqrestore(&data->rxlock, flags);
 754
 755         return err;
 756 }
 757
 758 static void btusb_intr_complete(struct urb *urb)
 759 {
 760         struct hci_dev *hdev = urb->context;
 761         struct btusb_data *data = hci_get_drvdata(hdev);
 762         int err;
 763
 764         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 765                urb->actual_length);
 766
 767         if (!test_bit(HCI_RUNNING, &hdev->flags))
 768                 return;
 769
 770         if (urb->status == 0) {
 771                 hdev->stat.byte_rx += urb->actual_length;
 772
 773                 if (btusb_recv_intr(data, urb->transfer_buffer,
 774                                     urb->actual_length) < 0) {
 775                         bt_dev_err(hdev, "corrupted event packet");
 776                         hdev->stat.err_rx++;
 777                 }
 778         } else if (urb->status == -ENOENT) {
 779                 /* Avoid suspend failed when usb_kill_urb */
 780                 return;
 781         }
 782
 783         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 784                 return;
 785
 786         usb_mark_last_busy(data->udev);
 787         usb_anchor_urb(urb, &data->intr_anchor);
 788
 789         err = usb_submit_urb(urb, GFP_ATOMIC);
 790         if (err < 0) {
 791                 /* -EPERM: urb is being killed;
 792                  * -ENODEV: device got disconnected
 793                  */
 794                 if (err != -EPERM && err != -ENODEV)
 795                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
 796                                    urb, -err);
 797                 usb_unanchor_urb(urb);
 798         }
 799 }
 800
 801 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 802 {
 803         struct btusb_data *data = hci_get_drvdata(hdev);
 804         struct urb *urb;
 805         unsigned char *buf;
 806         unsigned int pipe;
 807         int err, size;
 808
 809         BT_DBG("%s", hdev->name);
 810
 811         if (!data->intr_ep)
 812                 return -ENODEV;
 813
 814         urb = usb_alloc_urb(0, mem_flags);
 815         if (!urb)
 816                 return -ENOMEM;
 817
 818         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 819
 820         buf = kmalloc(size, mem_flags);
 821         if (!buf) {
 822                 usb_free_urb(urb);
 823                 return -ENOMEM;
 824         }
 825
 826         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 827
 828         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 829                          btusb_intr_complete, hdev, data->intr_ep->bInterval);
 830
 831         urb->transfer_flags |= URB_FREE_BUFFER;
 832
 833         usb_anchor_urb(urb, &data->intr_anchor);
 834
 835         err = usb_submit_urb(urb, mem_flags);
 836         if (err < 0) {
 837                 if (err != -EPERM && err != -ENODEV)
 838                         bt_dev_err(hdev, "urb %p submission failed (%d)",
 839                                    urb, -err);
 840                 usb_unanchor_urb(urb);
 841         }
 842
 843         usb_free_urb(urb);
 844
 845         return err;
 846 }
 847
 848 static void btusb_bulk_complete(struct urb *urb)
 849 {
 850         struct hci_dev *hdev = urb->context;
 851         struct btusb_data *data = hci_get_drvdata(hdev);
 852         int err;
 853
 854         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 855                urb->actual_length);
 856
 857         if (!test_bit(HCI_RUNNING, &hdev->flags))
 858                 return;
 859
 860         if (urb->status == 0) {
 861                 hdev->stat.byte_rx += urb->actual_length;
 862
 863                 if (data->recv_bulk(data, urb->transfer_buffer,
 864                                     urb->actual_length) < 0) {
 865                         bt_dev_err(hdev, "corrupted ACL packet");
 866                         hdev->stat.err_rx++;
 867                 }
 868         } else if (urb->status == -ENOENT) {
 869                 /* Avoid suspend failed when usb_kill_urb */
 870                 return;
 871         }
 872
 873         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 874                 return;
 875
 876         usb_anchor_urb(urb, &data->bulk_anchor);
 877         usb_mark_last_busy(data->udev);
 878
 879         err = usb_submit_urb(urb, GFP_ATOMIC);
 880         if (err < 0) {
 881                 /* -EPERM: urb is being killed;
 882                  * -ENODEV: device got disconnected
 883                  */
 884                 if (err != -EPERM && err != -ENODEV)
 885                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
 886                                    urb, -err);
 887                 usb_unanchor_urb(urb);
 888         }
 889 }
 890
 891 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 892 {
 893         struct btusb_data *data = hci_get_drvdata(hdev);
 894         struct urb *urb;
 895         unsigned char *buf;
 896         unsigned int pipe;
 897         int err, size = HCI_MAX_FRAME_SIZE;
 898
 899         BT_DBG("%s", hdev->name);
 900
 901         if (!data->bulk_rx_ep)
 902                 return -ENODEV;
 903
 904         urb = usb_alloc_urb(0, mem_flags);
 905         if (!urb)
 906                 return -ENOMEM;
 907
 908         buf = kmalloc(size, mem_flags);
 909         if (!buf) {
 910                 usb_free_urb(urb);
 911                 return -ENOMEM;
 912         }
 913
 914         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 915
 916         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
 917                           btusb_bulk_complete, hdev);
 918
 919         urb->transfer_flags |= URB_FREE_BUFFER;
 920
 921         usb_mark_last_busy(data->udev);
 922         usb_anchor_urb(urb, &data->bulk_anchor);
 923
 924         err = usb_submit_urb(urb, mem_flags);
 925         if (err < 0) {
 926                 if (err != -EPERM && err != -ENODEV)
 927                         bt_dev_err(hdev, "urb %p submission failed (%d)",
 928                                    urb, -err);
 929                 usb_unanchor_urb(urb);
 930         }
 931
 932         usb_free_urb(urb);
 933
 934         return err;
 935 }
 936
 937 static void btusb_isoc_complete(struct urb *urb)
 938 {
 939         struct hci_dev *hdev = urb->context;
 940         struct btusb_data *data = hci_get_drvdata(hdev);
 941         int i, err;
 942
 943         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 944                urb->actual_length);
 945
 946         if (!test_bit(HCI_RUNNING, &hdev->flags))
 947                 return;
 948
 949         if (urb->status == 0) {
 950                 for (i = 0; i < urb->number_of_packets; i++) {
 951                         unsigned int offset = urb->iso_frame_desc[i].offset;
 952                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 953
 954                         if (urb->iso_frame_desc[i].status)
 955                                 continue;
 956
 957                         hdev->stat.byte_rx += length;
 958
 959                         if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
 960                                             length) < 0) {
 961                                 bt_dev_err(hdev, "corrupted SCO packet");
 962                                 hdev->stat.err_rx++;
 963                         }
 964                 }
 965         } else if (urb->status == -ENOENT) {
 966                 /* Avoid suspend failed when usb_kill_urb */
 967                 return;
 968         }
 969
 970         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 971                 return;
 972
 973         usb_anchor_urb(urb, &data->isoc_anchor);
 974
 975         err = usb_submit_urb(urb, GFP_ATOMIC);
 976         if (err < 0) {
 977                 /* -EPERM: urb is being killed;
 978                  * -ENODEV: device got disconnected
 979                  */
 980                 if (err != -EPERM && err != -ENODEV)
 981                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
 982                                    urb, -err);
 983                 usb_unanchor_urb(urb);
 984         }
 985 }
 986
 987 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 988 {
 989         int i, offset = 0;
 990
 991         BT_DBG("len %d mtu %d", len, mtu);
 992
 993         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 994                                         i++, offset += mtu, len -= mtu) {
 995                 urb->iso_frame_desc[i].offset = offset;
 996                 urb->iso_frame_desc[i].length = mtu;
 997         }
 998
 999         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
1000                 urb->iso_frame_desc[i].offset = offset;
1001                 urb->iso_frame_desc[i].length = len;
1002                 i++;
1003         }
1004
1005         urb->number_of_packets = i;
1006 }
1007
1008 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
1009 {
1010         struct btusb_data *data = hci_get_drvdata(hdev);
1011         struct urb *urb;
1012         unsigned char *buf;
1013         unsigned int pipe;
1014         int err, size;
1015
1016         BT_DBG("%s", hdev->name);
1017
1018         if (!data->isoc_rx_ep)
1019                 return -ENODEV;
1020
1021         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
1022         if (!urb)
1023                 return -ENOMEM;
1024
1025         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
1026                                                 BTUSB_MAX_ISOC_FRAMES;
1027
1028         buf = kmalloc(size, mem_flags);
1029         if (!buf) {
1030                 usb_free_urb(urb);
1031                 return -ENOMEM;
1032         }
1033
1034         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
1035
1036         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
1037                          hdev, data->isoc_rx_ep->bInterval);
1038
1039         urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
1040
1041         __fill_isoc_descriptor(urb, size,
1042                                le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
1043
1044         usb_anchor_urb(urb, &data->isoc_anchor);
1045
1046         err = usb_submit_urb(urb, mem_flags);
1047         if (err < 0) {
1048                 if (err != -EPERM && err != -ENODEV)
1049                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1050                                    urb, -err);
1051                 usb_unanchor_urb(urb);
1052         }
1053
1054         usb_free_urb(urb);
1055
1056         return err;
1057 }
1058
1059 static void btusb_diag_complete(struct urb *urb)
1060 {
1061         struct hci_dev *hdev = urb->context;
1062         struct btusb_data *data = hci_get_drvdata(hdev);
1063         int err;
1064
1065         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1066                urb->actual_length);
1067
1068         if (urb->status == 0) {
1069                 struct sk_buff *skb;
1070
1071                 skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC);
1072                 if (skb) {
1073                         skb_put_data(skb, urb->transfer_buffer,
1074                                      urb->actual_length);
1075                         hci_recv_diag(hdev, skb);
1076                 }
1077         } else if (urb->status == -ENOENT) {
1078                 /* Avoid suspend failed when usb_kill_urb */
1079                 return;
1080         }
1081
1082         if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags))
1083                 return;
1084
1085         usb_anchor_urb(urb, &data->diag_anchor);
1086         usb_mark_last_busy(data->udev);
1087
1088         err = usb_submit_urb(urb, GFP_ATOMIC);
1089         if (err < 0) {
1090                 /* -EPERM: urb is being killed;
1091                  * -ENODEV: device got disconnected
1092                  */
1093                 if (err != -EPERM && err != -ENODEV)
1094                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1095                                    urb, -err);
1096                 usb_unanchor_urb(urb);
1097         }
1098 }
1099
1100 static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags)
1101 {
1102         struct btusb_data *data = hci_get_drvdata(hdev);
1103         struct urb *urb;
1104         unsigned char *buf;
1105         unsigned int pipe;
1106         int err, size = HCI_MAX_FRAME_SIZE;
1107
1108         BT_DBG("%s", hdev->name);
1109
1110         if (!data->diag_rx_ep)
1111                 return -ENODEV;
1112
1113         urb = usb_alloc_urb(0, mem_flags);
1114         if (!urb)
1115                 return -ENOMEM;
1116
1117         buf = kmalloc(size, mem_flags);
1118         if (!buf) {
1119                 usb_free_urb(urb);
1120                 return -ENOMEM;
1121         }
1122
1123         pipe = usb_rcvbulkpipe(data->udev, data->diag_rx_ep->bEndpointAddress);
1124
1125         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
1126                           btusb_diag_complete, hdev);
1127
1128         urb->transfer_flags |= URB_FREE_BUFFER;
1129
1130         usb_mark_last_busy(data->udev);
1131         usb_anchor_urb(urb, &data->diag_anchor);
1132
1133         err = usb_submit_urb(urb, mem_flags);
1134         if (err < 0) {
1135                 if (err != -EPERM && err != -ENODEV)
1136                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1137                                    urb, -err);
1138                 usb_unanchor_urb(urb);
1139         }
1140
1141         usb_free_urb(urb);
1142
1143         return err;
1144 }
1145
1146 static void btusb_tx_complete(struct urb *urb)
1147 {
1148         struct sk_buff *skb = urb->context;
1149         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1150         struct btusb_data *data = hci_get_drvdata(hdev);
1151         unsigned long flags;
1152
1153         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1154                urb->actual_length);
1155
1156         if (!test_bit(HCI_RUNNING, &hdev->flags))
1157                 goto done;
1158
1159         if (!urb->status)
1160                 hdev->stat.byte_tx += urb->transfer_buffer_length;
1161         else
1162                 hdev->stat.err_tx++;
1163
1164 done:
1165         spin_lock_irqsave(&data->txlock, flags);
1166         data->tx_in_flight--;
1167         spin_unlock_irqrestore(&data->txlock, flags);
1168
1169         kfree(urb->setup_packet);
1170
1171         kfree_skb(skb);
1172 }
1173
1174 static void btusb_isoc_tx_complete(struct urb *urb)
1175 {
1176         struct sk_buff *skb = urb->context;
1177         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1178
1179         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1180                urb->actual_length);
1181
1182         if (!test_bit(HCI_RUNNING, &hdev->flags))
1183                 goto done;
1184
1185         if (!urb->status)
1186                 hdev->stat.byte_tx += urb->transfer_buffer_length;
1187         else
1188                 hdev->stat.err_tx++;
1189
1190 done:
1191         kfree(urb->setup_packet);
1192
1193         kfree_skb(skb);
1194 }
1195
1196 static int btusb_open(struct hci_dev *hdev)
1197 {
1198         struct btusb_data *data = hci_get_drvdata(hdev);
1199         int err;
1200
1201         BT_DBG("%s", hdev->name);
1202
1203         err = usb_autopm_get_interface(data->intf);
1204         if (err < 0)
1205                 return err;
1206
1207         /* Patching USB firmware files prior to starting any URBs of HCI path
1208          * It is more safe to use USB bulk channel for downloading USB patch
1209          */
1210         if (data->setup_on_usb) {
1211                 err = data->setup_on_usb(hdev);
1212                 if (err < 0)
1213                         goto setup_fail;
1214         }
1215
1216         data->intf->needs_remote_wakeup = 1;
1217
1218         /* Disable device remote wakeup when host is suspended
1219          * For Realtek chips, global suspend without
1220          * SET_FEATURE (DEVICE_REMOTE_WAKEUP) can save more power in device.
1221          */
1222         if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags))
1223                 device_wakeup_disable(&data->udev->dev);
1224
1225         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
1226                 goto done;
1227
1228         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
1229         if (err < 0)
1230                 goto failed;
1231
1232         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1233         if (err < 0) {
1234                 usb_kill_anchored_urbs(&data->intr_anchor);
1235                 goto failed;
1236         }
1237
1238         set_bit(BTUSB_BULK_RUNNING, &data->flags);
1239         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1240
1241         if (data->diag) {
1242                 if (!btusb_submit_diag_urb(hdev, GFP_KERNEL))
1243                         set_bit(BTUSB_DIAG_RUNNING, &data->flags);
1244         }
1245
1246 done:
1247         usb_autopm_put_interface(data->intf);
1248         return 0;
1249
1250 failed:
1251         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1252 setup_fail:
1253         usb_autopm_put_interface(data->intf);
1254         return err;
1255 }
1256
1257 static void btusb_stop_traffic(struct btusb_data *data)
1258 {
1259         usb_kill_anchored_urbs(&data->intr_anchor);
1260         usb_kill_anchored_urbs(&data->bulk_anchor);
1261         usb_kill_anchored_urbs(&data->isoc_anchor);
1262         usb_kill_anchored_urbs(&data->diag_anchor);
1263         usb_kill_anchored_urbs(&data->ctrl_anchor);
1264 }
1265
1266 static int btusb_close(struct hci_dev *hdev)
1267 {
1268         struct btusb_data *data = hci_get_drvdata(hdev);
1269         int err;
1270
1271         BT_DBG("%s", hdev->name);
1272
1273         cancel_work_sync(&data->work);
1274         cancel_work_sync(&data->waker);
1275
1276         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1277         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1278         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1279         clear_bit(BTUSB_DIAG_RUNNING, &data->flags);
1280
1281         btusb_stop_traffic(data);
1282         btusb_free_frags(data);
1283
1284         err = usb_autopm_get_interface(data->intf);
1285         if (err < 0)
1286                 goto failed;
1287
1288         data->intf->needs_remote_wakeup = 0;
1289
1290         /* Enable remote wake up for auto-suspend */
1291         if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags))
1292                 data->intf->needs_remote_wakeup = 1;
1293
1294         usb_autopm_put_interface(data->intf);
1295
1296 failed:
1297         usb_scuttle_anchored_urbs(&data->deferred);
1298         return 0;
1299 }
1300
1301 static int btusb_flush(struct hci_dev *hdev)
1302 {
1303         struct btusb_data *data = hci_get_drvdata(hdev);
1304
1305         BT_DBG("%s", hdev->name);
1306
1307         usb_kill_anchored_urbs(&data->tx_anchor);
1308         btusb_free_frags(data);
1309
1310         return 0;
1311 }
1312
1313 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
1314 {
1315         struct btusb_data *data = hci_get_drvdata(hdev);
1316         struct usb_ctrlrequest *dr;
1317         struct urb *urb;
1318         unsigned int pipe;
1319
1320         urb = usb_alloc_urb(0, GFP_KERNEL);
1321         if (!urb)
1322                 return ERR_PTR(-ENOMEM);
1323
1324         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
1325         if (!dr) {
1326                 usb_free_urb(urb);
1327                 return ERR_PTR(-ENOMEM);
1328         }
1329
1330         dr->bRequestType = data->cmdreq_type;
1331         dr->bRequest     = data->cmdreq;
1332         dr->wIndex       = 0;
1333         dr->wValue       = 0;
1334         dr->wLength      = __cpu_to_le16(skb->len);
1335
1336         pipe = usb_sndctrlpipe(data->udev, 0x00);
1337
1338         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
1339                              skb->data, skb->len, btusb_tx_complete, skb);
1340
1341         skb->dev = (void *)hdev;
1342
1343         return urb;
1344 }
1345
1346 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
1347 {
1348         struct btusb_data *data = hci_get_drvdata(hdev);
1349         struct urb *urb;
1350         unsigned int pipe;
1351
1352         if (!data->bulk_tx_ep)
1353                 return ERR_PTR(-ENODEV);
1354
1355         urb = usb_alloc_urb(0, GFP_KERNEL);
1356         if (!urb)
1357                 return ERR_PTR(-ENOMEM);
1358
1359         pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1360
1361         usb_fill_bulk_urb(urb, data->udev, pipe,
1362                           skb->data, skb->len, btusb_tx_complete, skb);
1363
1364         skb->dev = (void *)hdev;
1365
1366         return urb;
1367 }
1368
1369 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1370 {
1371         struct btusb_data *data = hci_get_drvdata(hdev);
1372         struct urb *urb;
1373         unsigned int pipe;
1374
1375         if (!data->isoc_tx_ep)
1376                 return ERR_PTR(-ENODEV);
1377
1378         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1379         if (!urb)
1380                 return ERR_PTR(-ENOMEM);
1381
1382         pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1383
1384         usb_fill_int_urb(urb, data->udev, pipe,
1385                          skb->data, skb->len, btusb_isoc_tx_complete,
1386                          skb, data->isoc_tx_ep->bInterval);
1387
1388         urb->transfer_flags  = URB_ISO_ASAP;
1389
1390         __fill_isoc_descriptor(urb, skb->len,
1391                                le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1392
1393         skb->dev = (void *)hdev;
1394
1395         return urb;
1396 }
1397
1398 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1399 {
1400         struct btusb_data *data = hci_get_drvdata(hdev);
1401         int err;
1402
1403         usb_anchor_urb(urb, &data->tx_anchor);
1404
1405         err = usb_submit_urb(urb, GFP_KERNEL);
1406         if (err < 0) {
1407                 if (err != -EPERM && err != -ENODEV)
1408                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1409                                    urb, -err);
1410                 kfree(urb->setup_packet);
1411                 usb_unanchor_urb(urb);
1412         } else {
1413                 usb_mark_last_busy(data->udev);
1414         }
1415
1416         usb_free_urb(urb);
1417         return err;
1418 }
1419
1420 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1421 {
1422         struct btusb_data *data = hci_get_drvdata(hdev);
1423         unsigned long flags;
1424         bool suspending;
1425
1426         spin_lock_irqsave(&data->txlock, flags);
1427         suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1428         if (!suspending)
1429                 data->tx_in_flight++;
1430         spin_unlock_irqrestore(&data->txlock, flags);
1431
1432         if (!suspending)
1433                 return submit_tx_urb(hdev, urb);
1434
1435         usb_anchor_urb(urb, &data->deferred);
1436         schedule_work(&data->waker);
1437
1438         usb_free_urb(urb);
1439         return 0;
1440 }
1441
1442 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1443 {
1444         struct urb *urb;
1445
1446         BT_DBG("%s", hdev->name);
1447
1448         switch (hci_skb_pkt_type(skb)) {
1449         case HCI_COMMAND_PKT:
1450                 urb = alloc_ctrl_urb(hdev, skb);
1451                 if (IS_ERR(urb))
1452                         return PTR_ERR(urb);
1453
1454                 hdev->stat.cmd_tx++;
1455                 return submit_or_queue_tx_urb(hdev, urb);
1456
1457         case HCI_ACLDATA_PKT:
1458                 urb = alloc_bulk_urb(hdev, skb);
1459                 if (IS_ERR(urb))
1460                         return PTR_ERR(urb);
1461
1462                 hdev->stat.acl_tx++;
1463                 return submit_or_queue_tx_urb(hdev, urb);
1464
1465         case HCI_SCODATA_PKT:
1466                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1467                         return -ENODEV;
1468
1469                 urb = alloc_isoc_urb(hdev, skb);
1470                 if (IS_ERR(urb))
1471                         return PTR_ERR(urb);
1472
1473                 hdev->stat.sco_tx++;
1474                 return submit_tx_urb(hdev, urb);
1475         }
1476
1477         return -EILSEQ;
1478 }
1479
1480 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1481 {
1482         struct btusb_data *data = hci_get_drvdata(hdev);
1483
1484         BT_DBG("%s evt %d", hdev->name, evt);
1485
1486         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1487                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1488                 schedule_work(&data->work);
1489         }
1490 }
1491
1492 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1493 {
1494         struct btusb_data *data = hci_get_drvdata(hdev);
1495         struct usb_interface *intf = data->isoc;
1496         struct usb_endpoint_descriptor *ep_desc;
1497         int i, err;
1498
1499         if (!data->isoc)
1500                 return -ENODEV;
1501
1502         err = usb_set_interface(data->udev, data->isoc_ifnum, altsetting);
1503         if (err < 0) {
1504                 bt_dev_err(hdev, "setting interface failed (%d)", -err);
1505                 return err;
1506         }
1507
1508         data->isoc_altsetting = altsetting;
1509
1510         data->isoc_tx_ep = NULL;
1511         data->isoc_rx_ep = NULL;
1512
1513         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1514                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1515
1516                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1517                         data->isoc_tx_ep = ep_desc;
1518                         continue;
1519                 }
1520
1521                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1522                         data->isoc_rx_ep = ep_desc;
1523                         continue;
1524                 }
1525         }
1526
1527         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1528                 bt_dev_err(hdev, "invalid SCO descriptors");
1529                 return -ENODEV;
1530         }
1531
1532         return 0;
1533 }
1534
1535 static void btusb_work(struct work_struct *work)
1536 {
1537         struct btusb_data *data = container_of(work, struct btusb_data, work);
1538         struct hci_dev *hdev = data->hdev;
1539         int new_alts;
1540         int err;
1541
1542         if (data->sco_num > 0) {
1543                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1544                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1545                         if (err < 0) {
1546                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1547                                 usb_kill_anchored_urbs(&data->isoc_anchor);
1548                                 return;
1549                         }
1550
1551                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1552                 }
1553
1554                 if (hdev->voice_setting & 0x0020) {
1555                         static const int alts[3] = { 2, 4, 5 };
1556
1557                         new_alts = alts[data->sco_num - 1];
1558                 } else {
1559                         new_alts = data->sco_num;
1560                 }
1561
1562                 if (data->isoc_altsetting != new_alts) {
1563                         unsigned long flags;
1564
1565                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1566                         usb_kill_anchored_urbs(&data->isoc_anchor);
1567
1568                         /* When isochronous alternate setting needs to be
1569                          * changed, because SCO connection has been added
1570                          * or removed, a packet fragment may be left in the
1571                          * reassembling state. This could lead to wrongly
1572                          * assembled fragments.
1573                          *
1574                          * Clear outstanding fragment when selecting a new
1575                          * alternate setting.
1576                          */
1577                         spin_lock_irqsave(&data->rxlock, flags);
1578                         kfree_skb(data->sco_skb);
1579                         data->sco_skb = NULL;
1580                         spin_unlock_irqrestore(&data->rxlock, flags);
1581
1582                         if (__set_isoc_interface(hdev, new_alts) < 0)
1583                                 return;
1584                 }
1585
1586                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1587                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1588                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1589                         else
1590                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1591                 }
1592         } else {
1593                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1594                 usb_kill_anchored_urbs(&data->isoc_anchor);
1595
1596                 __set_isoc_interface(hdev, 0);
1597                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1598                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1599         }
1600 }
1601
1602 static void btusb_waker(struct work_struct *work)
1603 {
1604         struct btusb_data *data = container_of(work, struct btusb_data, waker);
1605         int err;
1606
1607         err = usb_autopm_get_interface(data->intf);
1608         if (err < 0)
1609                 return;
1610
1611         usb_autopm_put_interface(data->intf);
1612 }
1613
1614 static int btusb_setup_bcm92035(struct hci_dev *hdev)
1615 {
1616         struct sk_buff *skb;
1617         u8 val = 0x00;
1618
1619         BT_DBG("%s", hdev->name);
1620
1621         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1622         if (IS_ERR(skb))
1623                 bt_dev_err(hdev, "BCM92035 command failed (%ld)", PTR_ERR(skb));
1624         else
1625                 kfree_skb(skb);
1626
1627         return 0;
1628 }
1629
1630 static int btusb_setup_csr(struct hci_dev *hdev)
1631 {
1632         struct hci_rp_read_local_version *rp;
1633         struct sk_buff *skb;
1634
1635         BT_DBG("%s", hdev->name);
1636
1637         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1638                              HCI_INIT_TIMEOUT);
1639         if (IS_ERR(skb)) {
1640                 int err = PTR_ERR(skb);
1641                 bt_dev_err(hdev, "CSR: Local version failed (%d)", err);
1642                 return err;
1643         }
1644
1645         if (skb->len != sizeof(struct hci_rp_read_local_version)) {
1646                 bt_dev_err(hdev, "CSR: Local version length mismatch");
1647                 kfree_skb(skb);
1648                 return -EIO;
1649         }
1650
1651         rp = (struct hci_rp_read_local_version *)skb->data;
1652
1653         /* Detect controllers which aren't real CSR ones. */
1654         if (le16_to_cpu(rp->manufacturer) != 10 ||
1655             le16_to_cpu(rp->lmp_subver) == 0x0c5c) {
1656                 /* Clear the reset quirk since this is not an actual
1657                  * early Bluetooth 1.1 device from CSR.
1658                  */
1659                 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1660
1661                 /* These fake CSR controllers have all a broken
1662                  * stored link key handling and so just disable it.
1663                  */
1664                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
1665         }
1666
1667         kfree_skb(skb);
1668
1669         return 0;
1670 }
1671
1672 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1673                                                        struct intel_version *ver)
1674 {
1675         const struct firmware *fw;
1676         char fwname[64];
1677         int ret;
1678
1679         snprintf(fwname, sizeof(fwname),
1680                  "/*(DEBLOBBED)*/",
1681                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
1682                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1683                  ver->fw_build_ww, ver->fw_build_yy);
1684
1685         ret = reject_firmware(&fw, fwname, &hdev->dev);
1686         if (ret < 0) {
1687                 if (ret == -EINVAL) {
1688                         bt_dev_err(hdev, "Intel firmware file request failed (%d)",
1689                                    ret);
1690                         return NULL;
1691                 }
1692
1693                 bt_dev_err(hdev, "failed to open Intel firmware file: %s (%d)",
1694                            fwname, ret);
1695
1696                 /* If the correct firmware patch file is not found, use the
1697                  * default firmware patch file instead
1698                  */
1699                 snprintf(fwname, sizeof(fwname), "/*(DEBLOBBED)*/",
1700                          ver->hw_platform, ver->hw_variant);
1701                 if (reject_firmware(&fw, fwname, &hdev->dev) < 0) {
1702                         bt_dev_err(hdev, "failed to open default fw file: %s",
1703                                    fwname);
1704                         return NULL;
1705                 }
1706         }
1707
1708         bt_dev_info(hdev, "Intel Bluetooth firmware file: %s", fwname);
1709
1710         return fw;
1711 }
1712
1713 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1714                                       const struct firmware *fw,
1715                                       const u8 **fw_ptr, int *disable_patch)
1716 {
1717         struct sk_buff *skb;
1718         struct hci_command_hdr *cmd;
1719         const u8 *cmd_param;
1720         struct hci_event_hdr *evt = NULL;
1721         const u8 *evt_param = NULL;
1722         int remain = fw->size - (*fw_ptr - fw->data);
1723
1724         /* The first byte indicates the types of the patch command or event.
1725          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1726          * in the current firmware buffer doesn't start with 0x01 or
1727          * the size of remain buffer is smaller than HCI command header,
1728          * the firmware file is corrupted and it should stop the patching
1729          * process.
1730          */
1731         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1732                 bt_dev_err(hdev, "Intel fw corrupted: invalid cmd read");
1733                 return -EINVAL;
1734         }
1735         (*fw_ptr)++;
1736         remain--;
1737
1738         cmd = (struct hci_command_hdr *)(*fw_ptr);
1739         *fw_ptr += sizeof(*cmd);
1740         remain -= sizeof(*cmd);
1741
1742         /* Ensure that the remain firmware data is long enough than the length
1743          * of command parameter. If not, the firmware file is corrupted.
1744          */
1745         if (remain < cmd->plen) {
1746                 bt_dev_err(hdev, "Intel fw corrupted: invalid cmd len");
1747                 return -EFAULT;
1748         }
1749
1750         /* If there is a command that loads a patch in the firmware
1751          * file, then enable the patch upon success, otherwise just
1752          * disable the manufacturer mode, for example patch activation
1753          * is not required when the default firmware patch file is used
1754          * because there are no patch data to load.
1755          */
1756         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1757                 *disable_patch = 0;
1758
1759         cmd_param = *fw_ptr;
1760         *fw_ptr += cmd->plen;
1761         remain -= cmd->plen;
1762
1763         /* This reads the expected events when the above command is sent to the
1764          * device. Some vendor commands expects more than one events, for
1765          * example command status event followed by vendor specific event.
1766          * For this case, it only keeps the last expected event. so the command
1767          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1768          * last expected event.
1769          */
1770         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1771                 (*fw_ptr)++;
1772                 remain--;
1773
1774                 evt = (struct hci_event_hdr *)(*fw_ptr);
1775                 *fw_ptr += sizeof(*evt);
1776                 remain -= sizeof(*evt);
1777
1778                 if (remain < evt->plen) {
1779                         bt_dev_err(hdev, "Intel fw corrupted: invalid evt len");
1780                         return -EFAULT;
1781                 }
1782
1783                 evt_param = *fw_ptr;
1784                 *fw_ptr += evt->plen;
1785                 remain -= evt->plen;
1786         }
1787
1788         /* Every HCI commands in the firmware file has its correspond event.
1789          * If event is not found or remain is smaller than zero, the firmware
1790          * file is corrupted.
1791          */
1792         if (!evt || !evt_param || remain < 0) {
1793                 bt_dev_err(hdev, "Intel fw corrupted: invalid evt read");
1794                 return -EFAULT;
1795         }
1796
1797         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1798                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1799         if (IS_ERR(skb)) {
1800                 bt_dev_err(hdev, "sending Intel patch command (0x%4.4x) failed (%ld)",
1801                            cmd->opcode, PTR_ERR(skb));
1802                 return PTR_ERR(skb);
1803         }
1804
1805         /* It ensures that the returned event matches the event data read from
1806          * the firmware file. At fist, it checks the length and then
1807          * the contents of the event.
1808          */
1809         if (skb->len != evt->plen) {
1810                 bt_dev_err(hdev, "mismatch event length (opcode 0x%4.4x)",
1811                            le16_to_cpu(cmd->opcode));
1812                 kfree_skb(skb);
1813                 return -EFAULT;
1814         }
1815
1816         if (memcmp(skb->data, evt_param, evt->plen)) {
1817                 bt_dev_err(hdev, "mismatch event parameter (opcode 0x%4.4x)",
1818                            le16_to_cpu(cmd->opcode));
1819                 kfree_skb(skb);
1820                 return -EFAULT;
1821         }
1822         kfree_skb(skb);
1823
1824         return 0;
1825 }
1826
1827 static int btusb_setup_intel(struct hci_dev *hdev)
1828 {
1829         struct sk_buff *skb;
1830         const struct firmware *fw;
1831         const u8 *fw_ptr;
1832         int disable_patch, err;
1833         struct intel_version ver;
1834
1835         BT_DBG("%s", hdev->name);
1836
1837         /* The controller has a bug with the first HCI command sent to it
1838          * returning number of completed commands as zero. This would stall the
1839          * command processing in the Bluetooth core.
1840          *
1841          * As a workaround, send HCI Reset command first which will reset the
1842          * number of completed commands and allow normal command processing
1843          * from now on.
1844          */
1845         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1846         if (IS_ERR(skb)) {
1847                 bt_dev_err(hdev, "sending initial HCI reset command failed (%ld)",
1848                            PTR_ERR(skb));
1849                 return PTR_ERR(skb);
1850         }
1851         kfree_skb(skb);
1852
1853         /* Read Intel specific controller version first to allow selection of
1854          * which firmware file to load.
1855          *
1856          * The returned information are hardware variant and revision plus
1857          * firmware variant, revision and build number.
1858          */
1859         err = btintel_read_version(hdev, &ver);
1860         if (err)
1861                 return err;
1862
1863         bt_dev_info(hdev, "read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1864                     ver.hw_platform, ver.hw_variant, ver.hw_revision,
1865                     ver.fw_variant,  ver.fw_revision, ver.fw_build_num,
1866                     ver.fw_build_ww, ver.fw_build_yy, ver.fw_patch_num);
1867
1868         /* fw_patch_num indicates the version of patch the device currently
1869          * have. If there is no patch data in the device, it is always 0x00.
1870          * So, if it is other than 0x00, no need to patch the device again.
1871          */
1872         if (ver.fw_patch_num) {
1873                 bt_dev_info(hdev, "Intel device is already patched. "
1874                             "patch num: %02x", ver.fw_patch_num);
1875                 goto complete;
1876         }
1877
1878         /* Opens the firmware patch file based on the firmware version read
1879          * from the controller. If it fails to open the matching firmware
1880          * patch file, it tries to open the default firmware patch file.
1881          * If no patch file is found, allow the device to operate without
1882          * a patch.
1883          */
1884         fw = btusb_setup_intel_get_fw(hdev, &ver);
1885         if (!fw)
1886                 goto complete;
1887         fw_ptr = fw->data;
1888
1889         /* Enable the manufacturer mode of the controller.
1890          * Only while this mode is enabled, the driver can download the
1891          * firmware patch data and configuration parameters.
1892          */
1893         err = btintel_enter_mfg(hdev);
1894         if (err) {
1895                 release_firmware(fw);
1896                 return err;
1897         }
1898
1899         disable_patch = 1;
1900
1901         /* The firmware data file consists of list of Intel specific HCI
1902          * commands and its expected events. The first byte indicates the
1903          * type of the message, either HCI command or HCI event.
1904          *
1905          * It reads the command and its expected event from the firmware file,
1906          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1907          * the returned event is compared with the event read from the firmware
1908          * file and it will continue until all the messages are downloaded to
1909          * the controller.
1910          *
1911          * Once the firmware patching is completed successfully,
1912          * the manufacturer mode is disabled with reset and activating the
1913          * downloaded patch.
1914          *
1915          * If the firmware patching fails, the manufacturer mode is
1916          * disabled with reset and deactivating the patch.
1917          *
1918          * If the default patch file is used, no reset is done when disabling
1919          * the manufacturer.
1920          */
1921         while (fw->size > fw_ptr - fw->data) {
1922                 int ret;
1923
1924                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1925                                                  &disable_patch);
1926                 if (ret < 0)
1927                         goto exit_mfg_deactivate;
1928         }
1929
1930         release_firmware(fw);
1931
1932         if (disable_patch)
1933                 goto exit_mfg_disable;
1934
1935         /* Patching completed successfully and disable the manufacturer mode
1936          * with reset and activate the downloaded firmware patches.
1937          */
1938         err = btintel_exit_mfg(hdev, true, true);
1939         if (err)
1940                 return err;
1941
1942         /* Need build number for downloaded fw patches in
1943          * every power-on boot
1944          */
1945        err = btintel_read_version(hdev, &ver);
1946        if (err)
1947                return err;
1948        bt_dev_info(hdev, "Intel BT fw patch 0x%02x completed & activated",
1949                    ver.fw_patch_num);
1950
1951         goto complete;
1952
1953 exit_mfg_disable:
1954         /* Disable the manufacturer mode without reset */
1955         err = btintel_exit_mfg(hdev, false, false);
1956         if (err)
1957                 return err;
1958
1959         bt_dev_info(hdev, "Intel firmware patch completed");
1960
1961         goto complete;
1962
1963 exit_mfg_deactivate:
1964         release_firmware(fw);
1965
1966         /* Patching failed. Disable the manufacturer mode with reset and
1967          * deactivate the downloaded firmware patches.
1968          */
1969         err = btintel_exit_mfg(hdev, true, false);
1970         if (err)
1971                 return err;
1972
1973         bt_dev_info(hdev, "Intel firmware patch completed and deactivated");
1974
1975 complete:
1976         /* Set the event mask for Intel specific vendor events. This enables
1977          * a few extra events that are useful during general operation.
1978          */
1979         btintel_set_event_mask_mfg(hdev, false);
1980
1981         btintel_check_bdaddr(hdev);
1982         return 0;
1983 }
1984
1985 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
1986 {
1987         struct sk_buff *skb;
1988         struct hci_event_hdr *hdr;
1989         struct hci_ev_cmd_complete *evt;
1990
1991         skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_KERNEL);
1992         if (!skb)
1993                 return -ENOMEM;
1994
1995         hdr = skb_put(skb, sizeof(*hdr));
1996         hdr->evt = HCI_EV_CMD_COMPLETE;
1997         hdr->plen = sizeof(*evt) + 1;
1998
1999         evt = skb_put(skb, sizeof(*evt));
2000         evt->ncmd = 0x01;
2001         evt->opcode = cpu_to_le16(opcode);
2002
2003         skb_put_u8(skb, 0x00);
2004
2005         hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
2006
2007         return hci_recv_frame(hdev, skb);
2008 }
2009
2010 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
2011                                  int count)
2012 {
2013         /* When the device is in bootloader mode, then it can send
2014          * events via the bulk endpoint. These events are treated the
2015          * same way as the ones received from the interrupt endpoint.
2016          */
2017         if (test_bit(BTUSB_BOOTLOADER, &data->flags))
2018                 return btusb_recv_intr(data, buffer, count);
2019
2020         return btusb_recv_bulk(data, buffer, count);
2021 }
2022
2023 static void btusb_intel_bootup(struct btusb_data *data, const void *ptr,
2024                                unsigned int len)
2025 {
2026         const struct intel_bootup *evt = ptr;
2027
2028         if (len != sizeof(*evt))
2029                 return;
2030
2031         if (test_and_clear_bit(BTUSB_BOOTING, &data->flags))
2032                 wake_up_bit(&data->flags, BTUSB_BOOTING);
2033 }
2034
2035 static void btusb_intel_secure_send_result(struct btusb_data *data,
2036                                            const void *ptr, unsigned int len)
2037 {
2038         const struct intel_secure_send_result *evt = ptr;
2039
2040         if (len != sizeof(*evt))
2041                 return;
2042
2043         if (evt->result)
2044                 set_bit(BTUSB_FIRMWARE_FAILED, &data->flags);
2045
2046         if (test_and_clear_bit(BTUSB_DOWNLOADING, &data->flags) &&
2047             test_bit(BTUSB_FIRMWARE_LOADED, &data->flags))
2048                 wake_up_bit(&data->flags, BTUSB_DOWNLOADING);
2049 }
2050
2051 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
2052 {
2053         struct btusb_data *data = hci_get_drvdata(hdev);
2054
2055         if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
2056                 struct hci_event_hdr *hdr = (void *)skb->data;
2057
2058                 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
2059                     hdr->plen > 0) {
2060                         const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
2061                         unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
2062
2063                         switch (skb->data[2]) {
2064                         case 0x02:
2065                                 /* When switching to the operational firmware
2066                                  * the device sends a vendor specific event
2067                                  * indicating that the bootup completed.
2068                                  */
2069                                 btusb_intel_bootup(data, ptr, len);
2070                                 break;
2071                         case 0x06:
2072                                 /* When the firmware loading completes the
2073                                  * device sends out a vendor specific event
2074                                  * indicating the result of the firmware
2075                                  * loading.
2076                                  */
2077                                 btusb_intel_secure_send_result(data, ptr, len);
2078                                 break;
2079                         }
2080                 }
2081         }
2082
2083         return hci_recv_frame(hdev, skb);
2084 }
2085
2086 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
2087 {
2088         struct btusb_data *data = hci_get_drvdata(hdev);
2089         struct urb *urb;
2090
2091         BT_DBG("%s", hdev->name);
2092
2093         switch (hci_skb_pkt_type(skb)) {
2094         case HCI_COMMAND_PKT:
2095                 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
2096                         struct hci_command_hdr *cmd = (void *)skb->data;
2097                         __u16 opcode = le16_to_cpu(cmd->opcode);
2098
2099                         /* When in bootloader mode and the command 0xfc09
2100                          * is received, it needs to be send down the
2101                          * bulk endpoint. So allocate a bulk URB instead.
2102                          */
2103                         if (opcode == 0xfc09)
2104                                 urb = alloc_bulk_urb(hdev, skb);
2105                         else
2106                                 urb = alloc_ctrl_urb(hdev, skb);
2107
2108                         /* When the 0xfc01 command is issued to boot into
2109                          * the operational firmware, it will actually not
2110                          * send a command complete event. To keep the flow
2111                          * control working inject that event here.
2112                          */
2113                         if (opcode == 0xfc01)
2114                                 inject_cmd_complete(hdev, opcode);
2115                 } else {
2116                         urb = alloc_ctrl_urb(hdev, skb);
2117                 }
2118                 if (IS_ERR(urb))
2119                         return PTR_ERR(urb);
2120
2121                 hdev->stat.cmd_tx++;
2122                 return submit_or_queue_tx_urb(hdev, urb);
2123
2124         case HCI_ACLDATA_PKT:
2125                 urb = alloc_bulk_urb(hdev, skb);
2126                 if (IS_ERR(urb))
2127                         return PTR_ERR(urb);
2128
2129                 hdev->stat.acl_tx++;
2130                 return submit_or_queue_tx_urb(hdev, urb);
2131
2132         case HCI_SCODATA_PKT:
2133                 if (hci_conn_num(hdev, SCO_LINK) < 1)
2134                         return -ENODEV;
2135
2136                 urb = alloc_isoc_urb(hdev, skb);
2137                 if (IS_ERR(urb))
2138                         return PTR_ERR(urb);
2139
2140                 hdev->stat.sco_tx++;
2141                 return submit_tx_urb(hdev, urb);
2142         }
2143
2144         return -EILSEQ;
2145 }
2146
2147 static bool btusb_setup_intel_new_get_fw_name(struct intel_version *ver,
2148                                              struct intel_boot_params *params,
2149                                              char *fw_name, size_t len,
2150                                              const char *suffix)
2151 {
2152         switch (ver->hw_variant) {
2153         case 0x0b:      /* SfP */
2154         case 0x0c:      /* WsP */
2155                 snprintf(fw_name, len, "intel/ibt-%u-%u.%s",
2156                         le16_to_cpu(ver->hw_variant),
2157                         le16_to_cpu(params->dev_revid),
2158                         suffix);
2159                 break;
2160         case 0x11:      /* JfP */
2161         case 0x12:      /* ThP */
2162         case 0x13:      /* HrP */
2163         case 0x14:      /* CcP */
2164                 snprintf(fw_name, len, "intel/ibt-%u-%u-%u.%s",
2165                         le16_to_cpu(ver->hw_variant),
2166                         le16_to_cpu(ver->hw_revision),
2167                         le16_to_cpu(ver->fw_revision),
2168                         suffix);
2169                 break;
2170         default:
2171                 return false;
2172         }
2173         return true;
2174 }
2175
2176 static int btusb_setup_intel_new(struct hci_dev *hdev)
2177 {
2178         struct btusb_data *data = hci_get_drvdata(hdev);
2179         struct intel_version ver;
2180         struct intel_boot_params params;
2181         const struct firmware *fw;
2182         u32 boot_param;
2183         char fwname[64];
2184         ktime_t calltime, delta, rettime;
2185         unsigned long long duration;
2186         int err;
2187
2188         BT_DBG("%s", hdev->name);
2189
2190         /* Set the default boot parameter to 0x0 and it is updated to
2191          * SKU specific boot parameter after reading Intel_Write_Boot_Params
2192          * command while downloading the firmware.
2193          */
2194         boot_param = 0x00000000;
2195
2196         calltime = ktime_get();
2197
2198         /* Read the Intel version information to determine if the device
2199          * is in bootloader mode or if it already has operational firmware
2200          * loaded.
2201          */
2202         err = btintel_read_version(hdev, &ver);
2203         if (err) {
2204                 bt_dev_err(hdev, "Intel Read version failed (%d)", err);
2205                 btintel_reset_to_bootloader(hdev);
2206                 return err;
2207         }
2208
2209         /* The hardware platform number has a fixed value of 0x37 and
2210          * for now only accept this single value.
2211          */
2212         if (ver.hw_platform != 0x37) {
2213                 bt_dev_err(hdev, "Unsupported Intel hardware platform (%u)",
2214                            ver.hw_platform);
2215                 return -EINVAL;
2216         }
2217
2218         /* Check for supported iBT hardware variants of this firmware
2219          * loading method.
2220          *
2221          * This check has been put in place to ensure correct forward
2222          * compatibility options when newer hardware variants come along.
2223          */
2224         switch (ver.hw_variant) {
2225         case 0x0b:      /* SfP */
2226         case 0x0c:      /* WsP */
2227         case 0x11:      /* JfP */
2228         case 0x12:      /* ThP */
2229         case 0x13:      /* HrP */
2230         case 0x14:      /* CcP */
2231                 break;
2232         default:
2233                 bt_dev_err(hdev, "Unsupported Intel hardware variant (%u)",
2234                            ver.hw_variant);
2235                 return -EINVAL;
2236         }
2237
2238         btintel_version_info(hdev, &ver);
2239
2240         /* The firmware variant determines if the device is in bootloader
2241          * mode or is running operational firmware. The value 0x06 identifies
2242          * the bootloader and the value 0x23 identifies the operational
2243          * firmware.
2244          *
2245          * When the operational firmware is already present, then only
2246          * the check for valid Bluetooth device address is needed. This
2247          * determines if the device will be added as configured or
2248          * unconfigured controller.
2249          *
2250          * It is not possible to use the Secure Boot Parameters in this
2251          * case since that command is only available in bootloader mode.
2252          */
2253         if (ver.fw_variant == 0x23) {
2254                 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2255                 btintel_check_bdaddr(hdev);
2256                 return 0;
2257         }
2258
2259         /* If the device is not in bootloader mode, then the only possible
2260          * choice is to return an error and abort the device initialization.
2261          */
2262         if (ver.fw_variant != 0x06) {
2263                 bt_dev_err(hdev, "Unsupported Intel firmware variant (%u)",
2264                            ver.fw_variant);
2265                 return -ENODEV;
2266         }
2267
2268         /* Read the secure boot parameters to identify the operating
2269          * details of the bootloader.
2270          */
2271         err = btintel_read_boot_params(hdev, &params);
2272         if (err)
2273                 return err;
2274
2275         /* It is required that every single firmware fragment is acknowledged
2276          * with a command complete event. If the boot parameters indicate
2277          * that this bootloader does not send them, then abort the setup.
2278          */
2279         if (params.limited_cce != 0x00) {
2280                 bt_dev_err(hdev, "Unsupported Intel firmware loading method (%u)",
2281                            params.limited_cce);
2282                 return -EINVAL;
2283         }
2284
2285         /* If the OTP has no valid Bluetooth device address, then there will
2286          * also be no valid address for the operational firmware.
2287          */
2288         if (!bacmp(&params.otp_bdaddr, BDADDR_ANY)) {
2289                 bt_dev_info(hdev, "No device address configured");
2290                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2291         }
2292
2293         /* With this Intel bootloader only the hardware variant and device
2294          * revision information are used to select the right firmware for SfP
2295          * and WsP.
2296          *
2297          * The firmware filename is ibt-<hw_variant>-<dev_revid>.sfi.
2298          *
2299          * Currently the supported hardware variants are:
2300          *   11 (0x0b) for iBT3.0 (LnP/SfP)
2301          *   12 (0x0c) for iBT3.5 (WsP)
2302          *
2303          * For ThP/JfP and for future SKU's, the FW name varies based on HW
2304          * variant, HW revision and FW revision, as these are dependent on CNVi
2305          * and RF Combination.
2306          *
2307          *   17 (0x11) for iBT3.5 (JfP)
2308          *   18 (0x12) for iBT3.5 (ThP)
2309          *
2310          * The firmware file name for these will be
2311          * ibt-<hw_variant>-<hw_revision>-<fw_revision>.sfi.
2312          *
2313          */
2314         err = btusb_setup_intel_new_get_fw_name(&ver, &params, fwname,
2315                                                 sizeof(fwname), "sfi");
2316         if (!err) {
2317                 bt_dev_err(hdev, "Unsupported Intel firmware naming");
2318                 return -EINVAL;
2319         }
2320
2321         err = reject_firmware(&fw, fwname, &hdev->dev);
2322         if (err < 0) {
2323                 bt_dev_err(hdev, "Failed to load Intel firmware file (%d)", err);
2324                 return err;
2325         }
2326
2327         bt_dev_info(hdev, "Found device firmware: %s", fwname);
2328
2329         /* Save the DDC file name for later use to apply once the firmware
2330          * downloading is done.
2331          */
2332         err = btusb_setup_intel_new_get_fw_name(&ver, &params, fwname,
2333                                                 sizeof(fwname), "ddc");
2334         if (!err) {
2335                 bt_dev_err(hdev, "Unsupported Intel firmware naming");
2336                 return -EINVAL;
2337         }
2338
2339         if (fw->size < 644) {
2340                 bt_dev_err(hdev, "Invalid size of firmware file (%zu)",
2341                            fw->size);
2342                 err = -EBADF;
2343                 goto done;
2344         }
2345
2346         set_bit(BTUSB_DOWNLOADING, &data->flags);
2347
2348         /* Start firmware downloading and get boot parameter */
2349         err = btintel_download_firmware(hdev, fw, &boot_param);
2350         if (err < 0) {
2351                 /* When FW download fails, send Intel Reset to retry
2352                  * FW download.
2353                  */
2354                 btintel_reset_to_bootloader(hdev);
2355                 goto done;
2356         }
2357         set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2358
2359         bt_dev_info(hdev, "Waiting for firmware download to complete");
2360
2361         /* Before switching the device into operational mode and with that
2362          * booting the loaded firmware, wait for the bootloader notification
2363          * that all fragments have been successfully received.
2364          *
2365          * When the event processing receives the notification, then the
2366          * BTUSB_DOWNLOADING flag will be cleared.
2367          *
2368          * The firmware loading should not take longer than 5 seconds
2369          * and thus just timeout if that happens and fail the setup
2370          * of this device.
2371          */
2372         err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
2373                                   TASK_INTERRUPTIBLE,
2374                                   msecs_to_jiffies(5000));
2375         if (err == -EINTR) {
2376                 bt_dev_err(hdev, "Firmware loading interrupted");
2377                 goto done;
2378         }
2379
2380         if (err) {
2381                 bt_dev_err(hdev, "Firmware loading timeout");
2382                 err = -ETIMEDOUT;
2383                 btintel_reset_to_bootloader(hdev);
2384                 goto done;
2385         }
2386
2387         if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) {
2388                 bt_dev_err(hdev, "Firmware loading failed");
2389                 err = -ENOEXEC;
2390                 goto done;
2391         }
2392
2393         rettime = ktime_get();
2394         delta = ktime_sub(rettime, calltime);
2395         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2396
2397         bt_dev_info(hdev, "Firmware loaded in %llu usecs", duration);
2398
2399 done:
2400         release_firmware(fw);
2401
2402         if (err < 0)
2403                 return err;
2404
2405         calltime = ktime_get();
2406
2407         set_bit(BTUSB_BOOTING, &data->flags);
2408
2409         err = btintel_send_intel_reset(hdev, boot_param);
2410         if (err) {
2411                 bt_dev_err(hdev, "Intel Soft Reset failed (%d)", err);
2412                 btintel_reset_to_bootloader(hdev);
2413                 return err;
2414         }
2415
2416         /* The bootloader will not indicate when the device is ready. This
2417          * is done by the operational firmware sending bootup notification.
2418          *
2419          * Booting into operational firmware should not take longer than
2420          * 1 second. However if that happens, then just fail the setup
2421          * since something went wrong.
2422          */
2423         bt_dev_info(hdev, "Waiting for device to boot");
2424
2425         err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING,
2426                                   TASK_INTERRUPTIBLE,
2427                                   msecs_to_jiffies(1000));
2428
2429         if (err == -EINTR) {
2430                 bt_dev_err(hdev, "Device boot interrupted");
2431                 return -EINTR;
2432         }
2433
2434         if (err) {
2435                 bt_dev_err(hdev, "Device boot timeout");
2436                 btintel_reset_to_bootloader(hdev);
2437                 return -ETIMEDOUT;
2438         }
2439
2440         rettime = ktime_get();
2441         delta = ktime_sub(rettime, calltime);
2442         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2443
2444         bt_dev_info(hdev, "Device booted in %llu usecs", duration);
2445
2446         clear_bit(BTUSB_BOOTLOADER, &data->flags);
2447
2448         /* Once the device is running in operational mode, it needs to apply
2449          * the device configuration (DDC) parameters.
2450          *
2451          * The device can work without DDC parameters, so even if it fails
2452          * to load the file, no need to fail the setup.
2453          */
2454         btintel_load_ddc_config(hdev, fwname);
2455
2456         /* Set the event mask for Intel specific vendor events. This enables
2457          * a few extra events that are useful during general operation. It
2458          * does not enable any debugging related events.
2459          *
2460          * The device will function correctly without these events enabled
2461          * and thus no need to fail the setup.
2462          */
2463         btintel_set_event_mask(hdev, false);
2464
2465         /* Read the Intel version information after loading the FW  */
2466         err = btintel_read_version(hdev, &ver);
2467         if (err)
2468                 return err;
2469
2470         btintel_version_info(hdev, &ver);
2471
2472         return 0;
2473 }
2474
2475 static int btusb_shutdown_intel(struct hci_dev *hdev)
2476 {
2477         struct sk_buff *skb;
2478         long ret;
2479
2480         /* In the shutdown sequence where Bluetooth is turned off followed
2481          * by WiFi being turned off, turning WiFi back on causes issue with
2482          * the RF calibration.
2483          *
2484          * To ensure that any RF activity has been stopped, issue HCI Reset
2485          * command to clear all ongoing activity including advertising,
2486          * scanning etc.
2487          */
2488         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2489         if (IS_ERR(skb)) {
2490                 ret = PTR_ERR(skb);
2491                 bt_dev_err(hdev, "HCI reset during shutdown failed");
2492                 return ret;
2493         }
2494         kfree_skb(skb);
2495
2496         /* Some platforms have an issue with BT LED when the interface is
2497          * down or BT radio is turned off, which takes 5 seconds to BT LED
2498          * goes off. This command turns off the BT LED immediately.
2499          */
2500         skb = __hci_cmd_sync(hdev, 0xfc3f, 0, NULL, HCI_INIT_TIMEOUT);
2501         if (IS_ERR(skb)) {
2502                 ret = PTR_ERR(skb);
2503                 bt_dev_err(hdev, "turning off Intel device LED failed");
2504                 return ret;
2505         }
2506         kfree_skb(skb);
2507
2508         return 0;
2509 }
2510
2511 static int btusb_shutdown_intel_new(struct hci_dev *hdev)
2512 {
2513         struct sk_buff *skb;
2514
2515         /* Send HCI Reset to the controller to stop any BT activity which
2516          * were triggered. This will help to save power and maintain the
2517          * sync b/w Host and controller
2518          */
2519         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2520         if (IS_ERR(skb)) {
2521                 bt_dev_err(hdev, "HCI reset during shutdown failed");
2522                 return PTR_ERR(skb);
2523         }
2524         kfree_skb(skb);
2525
2526         return 0;
2527 }
2528
2529 #define FIRMWARE_MT7663         "/*(DEBLOBBED)*/"
2530 #define FIRMWARE_MT7668         "/*(DEBLOBBED)*/"
2531
2532 #define HCI_WMT_MAX_EVENT_SIZE          64
2533
2534 enum {
2535         BTMTK_WMT_PATCH_DWNLD = 0x1,
2536         BTMTK_WMT_FUNC_CTRL = 0x6,
2537         BTMTK_WMT_RST = 0x7,
2538         BTMTK_WMT_SEMAPHORE = 0x17,
2539 };
2540
2541 enum {
2542         BTMTK_WMT_INVALID,
2543         BTMTK_WMT_PATCH_UNDONE,
2544         BTMTK_WMT_PATCH_DONE,
2545         BTMTK_WMT_ON_UNDONE,
2546         BTMTK_WMT_ON_DONE,
2547         BTMTK_WMT_ON_PROGRESS,
2548 };
2549
2550 struct btmtk_wmt_hdr {
2551         u8      dir;
2552         u8      op;
2553         __le16  dlen;
2554         u8      flag;
2555 } __packed;
2556
2557 struct btmtk_hci_wmt_cmd {
2558         struct btmtk_wmt_hdr hdr;
2559         u8 data[256];
2560 } __packed;
2561
2562 struct btmtk_hci_wmt_evt {
2563         struct hci_event_hdr hhdr;
2564         struct btmtk_wmt_hdr whdr;
2565 } __packed;
2566
2567 struct btmtk_hci_wmt_evt_funcc {
2568         struct btmtk_hci_wmt_evt hwhdr;
2569         __be16 status;
2570 } __packed;
2571
2572 struct btmtk_tci_sleep {
2573         u8 mode;
2574         __le16 duration;
2575         __le16 host_duration;
2576         u8 host_wakeup_pin;
2577         u8 time_compensation;
2578 } __packed;
2579
2580 struct btmtk_hci_wmt_params {
2581         u8 op;
2582         u8 flag;
2583         u16 dlen;
2584         const void *data;
2585         u32 *status;
2586 };
2587
2588 static void btusb_mtk_wmt_recv(struct urb *urb)
2589 {
2590         struct hci_dev *hdev = urb->context;
2591         struct btusb_data *data = hci_get_drvdata(hdev);
2592         struct hci_event_hdr *hdr;
2593         struct sk_buff *skb;
2594         int err;
2595
2596         if (urb->status == 0 && urb->actual_length > 0) {
2597                 hdev->stat.byte_rx += urb->actual_length;
2598
2599                 /* WMT event shouldn't be fragmented and the size should be
2600                  * less than HCI_WMT_MAX_EVENT_SIZE.
2601                  */
2602                 skb = bt_skb_alloc(HCI_WMT_MAX_EVENT_SIZE, GFP_ATOMIC);
2603                 if (!skb) {
2604                         hdev->stat.err_rx++;
2605                         goto err_out;
2606                 }
2607
2608                 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
2609                 skb_put_data(skb, urb->transfer_buffer, urb->actual_length);
2610
2611                 hdr = (void *)skb->data;
2612                 /* Fix up the vendor event id with 0xff for vendor specific
2613                  * instead of 0xe4 so that event send via monitoring socket can
2614                  * be parsed properly.
2615                  */
2616                 hdr->evt = 0xff;
2617
2618                 /* When someone waits for the WMT event, the skb is being cloned
2619                  * and being processed the events from there then.
2620                  */
2621                 if (test_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags)) {
2622                         data->evt_skb = skb_clone(skb, GFP_ATOMIC);
2623                         if (!data->evt_skb)
2624                                 goto err_out;
2625                 }
2626
2627                 err = hci_recv_frame(hdev, skb);
2628                 if (err < 0)
2629                         goto err_free_skb;
2630
2631                 if (test_and_clear_bit(BTUSB_TX_WAIT_VND_EVT,
2632                                        &data->flags)) {
2633                         /* Barrier to sync with other CPUs */
2634                         smp_mb__after_atomic();
2635                         wake_up_bit(&data->flags,
2636                                     BTUSB_TX_WAIT_VND_EVT);
2637                 }
2638 err_out:
2639                 return;
2640 err_free_skb:
2641                 kfree_skb(data->evt_skb);
2642                 data->evt_skb = NULL;
2643                 return;
2644         } else if (urb->status == -ENOENT) {
2645                 /* Avoid suspend failed when usb_kill_urb */
2646                 return;
2647         }
2648
2649         usb_mark_last_busy(data->udev);
2650
2651         /* The URB complete handler is still called with urb->actual_length = 0
2652          * when the event is not available, so we should keep re-submitting
2653          * URB until WMT event returns, Also, It's necessary to wait some time
2654          * between the two consecutive control URBs to relax the target device
2655          * to generate the event. Otherwise, the WMT event cannot return from
2656          * the device successfully.
2657          */
2658         udelay(100);
2659
2660         usb_anchor_urb(urb, &data->ctrl_anchor);
2661         err = usb_submit_urb(urb, GFP_ATOMIC);
2662         if (err < 0) {
2663                 /* -EPERM: urb is being killed;
2664                  * -ENODEV: device got disconnected
2665                  */
2666                 if (err != -EPERM && err != -ENODEV)
2667                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
2668                                    urb, -err);
2669                 usb_unanchor_urb(urb);
2670         }
2671 }
2672
2673 static int btusb_mtk_submit_wmt_recv_urb(struct hci_dev *hdev)
2674 {
2675         struct btusb_data *data = hci_get_drvdata(hdev);
2676         struct usb_ctrlrequest *dr;
2677         unsigned char *buf;
2678         int err, size = 64;
2679         unsigned int pipe;
2680         struct urb *urb;
2681
2682         urb = usb_alloc_urb(0, GFP_KERNEL);
2683         if (!urb)
2684                 return -ENOMEM;
2685
2686         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
2687         if (!dr) {
2688                 usb_free_urb(urb);
2689                 return -ENOMEM;
2690         }
2691
2692         dr->bRequestType = USB_TYPE_VENDOR | USB_DIR_IN;
2693         dr->bRequest     = 1;
2694         dr->wIndex       = cpu_to_le16(0);
2695         dr->wValue       = cpu_to_le16(48);
2696         dr->wLength      = cpu_to_le16(size);
2697
2698         buf = kmalloc(size, GFP_KERNEL);
2699         if (!buf) {
2700                 kfree(dr);
2701                 return -ENOMEM;
2702         }
2703
2704         pipe = usb_rcvctrlpipe(data->udev, 0);
2705
2706         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
2707                              buf, size, btusb_mtk_wmt_recv, hdev);
2708
2709         urb->transfer_flags |= URB_FREE_BUFFER;
2710
2711         usb_anchor_urb(urb, &data->ctrl_anchor);
2712         err = usb_submit_urb(urb, GFP_KERNEL);
2713         if (err < 0) {
2714                 if (err != -EPERM && err != -ENODEV)
2715                         bt_dev_err(hdev, "urb %p submission failed (%d)",
2716                                    urb, -err);
2717                 usb_unanchor_urb(urb);
2718         }
2719
2720         usb_free_urb(urb);
2721
2722         return err;
2723 }
2724
2725 static int btusb_mtk_hci_wmt_sync(struct hci_dev *hdev,
2726                                   struct btmtk_hci_wmt_params *wmt_params)
2727 {
2728         struct btusb_data *data = hci_get_drvdata(hdev);
2729         struct btmtk_hci_wmt_evt_funcc *wmt_evt_funcc;
2730         u32 hlen, status = BTMTK_WMT_INVALID;
2731         struct btmtk_hci_wmt_evt *wmt_evt;
2732         struct btmtk_hci_wmt_cmd wc;
2733         struct btmtk_wmt_hdr *hdr;
2734         int err;
2735
2736         /* Submit control IN URB on demand to process the WMT event */
2737         err = btusb_mtk_submit_wmt_recv_urb(hdev);
2738         if (err < 0)
2739                 return err;
2740
2741         /* Send the WMT command and wait until the WMT event returns */
2742         hlen = sizeof(*hdr) + wmt_params->dlen;
2743         if (hlen > 255)
2744                 return -EINVAL;
2745
2746         hdr = (struct btmtk_wmt_hdr *)&wc;
2747         hdr->dir = 1;
2748         hdr->op = wmt_params->op;
2749         hdr->dlen = cpu_to_le16(wmt_params->dlen + 1);
2750         hdr->flag = wmt_params->flag;
2751         memcpy(wc.data, wmt_params->data, wmt_params->dlen);
2752
2753         set_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2754
2755         err = __hci_cmd_send(hdev, 0xfc6f, hlen, &wc);
2756
2757         if (err < 0) {
2758                 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2759                 return err;
2760         }
2761
2762         /* The vendor specific WMT commands are all answered by a vendor
2763          * specific event and will have the Command Status or Command
2764          * Complete as with usual HCI command flow control.
2765          *
2766          * After sending the command, wait for BTUSB_TX_WAIT_VND_EVT
2767          * state to be cleared. The driver specific event receive routine
2768          * will clear that state and with that indicate completion of the
2769          * WMT command.
2770          */
2771         err = wait_on_bit_timeout(&data->flags, BTUSB_TX_WAIT_VND_EVT,
2772                                   TASK_INTERRUPTIBLE, HCI_INIT_TIMEOUT);
2773         if (err == -EINTR) {
2774                 bt_dev_err(hdev, "Execution of wmt command interrupted");
2775                 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2776                 return err;
2777         }
2778
2779         if (err) {
2780                 bt_dev_err(hdev, "Execution of wmt command timed out");
2781                 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2782                 return -ETIMEDOUT;
2783         }
2784
2785         /* Parse and handle the return WMT event */
2786         wmt_evt = (struct btmtk_hci_wmt_evt *)data->evt_skb->data;
2787         if (wmt_evt->whdr.op != hdr->op) {
2788                 bt_dev_err(hdev, "Wrong op received %d expected %d",
2789                            wmt_evt->whdr.op, hdr->op);
2790                 err = -EIO;
2791                 goto err_free_skb;
2792         }
2793
2794         switch (wmt_evt->whdr.op) {
2795         case BTMTK_WMT_SEMAPHORE:
2796                 if (wmt_evt->whdr.flag == 2)
2797                         status = BTMTK_WMT_PATCH_UNDONE;
2798                 else
2799                         status = BTMTK_WMT_PATCH_DONE;
2800                 break;
2801         case BTMTK_WMT_FUNC_CTRL:
2802                 wmt_evt_funcc = (struct btmtk_hci_wmt_evt_funcc *)wmt_evt;
2803                 if (be16_to_cpu(wmt_evt_funcc->status) == 0x404)
2804                         status = BTMTK_WMT_ON_DONE;
2805                 else if (be16_to_cpu(wmt_evt_funcc->status) == 0x420)
2806                         status = BTMTK_WMT_ON_PROGRESS;
2807                 else
2808                         status = BTMTK_WMT_ON_UNDONE;
2809                 break;
2810         }
2811
2812         if (wmt_params->status)
2813                 *wmt_params->status = status;
2814
2815 err_free_skb:
2816         kfree_skb(data->evt_skb);
2817         data->evt_skb = NULL;
2818
2819         return err;
2820 }
2821
2822 static int btusb_mtk_setup_firmware(struct hci_dev *hdev, const char *fwname)
2823 {
2824         struct btmtk_hci_wmt_params wmt_params;
2825         const struct firmware *fw;
2826         const u8 *fw_ptr;
2827         size_t fw_size;
2828         int err, dlen;
2829         u8 flag;
2830
2831         err = reject_firmware(&fw, fwname, &hdev->dev);
2832         if (err < 0) {
2833                 bt_dev_err(hdev, "Failed to load firmware file (%d)", err);
2834                 return err;
2835         }
2836
2837         fw_ptr = fw->data;
2838         fw_size = fw->size;
2839
2840         /* The size of patch header is 30 bytes, should be skip */
2841         if (fw_size < 30) {
2842                 err = -EINVAL;
2843                 goto err_release_fw;
2844         }
2845
2846         fw_size -= 30;
2847         fw_ptr += 30;
2848         flag = 1;
2849
2850         wmt_params.op = BTMTK_WMT_PATCH_DWNLD;
2851         wmt_params.status = NULL;
2852
2853         while (fw_size > 0) {
2854                 dlen = min_t(int, 250, fw_size);
2855
2856                 /* Tell deivice the position in sequence */
2857                 if (fw_size - dlen <= 0)
2858                         flag = 3;
2859                 else if (fw_size < fw->size - 30)
2860                         flag = 2;
2861
2862                 wmt_params.flag = flag;
2863                 wmt_params.dlen = dlen;
2864                 wmt_params.data = fw_ptr;
2865
2866                 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2867                 if (err < 0) {
2868                         bt_dev_err(hdev, "Failed to send wmt patch dwnld (%d)",
2869                                    err);
2870                         goto err_release_fw;
2871                 }
2872
2873                 fw_size -= dlen;
2874                 fw_ptr += dlen;
2875         }
2876
2877         wmt_params.op = BTMTK_WMT_RST;
2878         wmt_params.flag = 4;
2879         wmt_params.dlen = 0;
2880         wmt_params.data = NULL;
2881         wmt_params.status = NULL;
2882
2883         /* Activate funciton the firmware providing to */
2884         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2885         if (err < 0) {
2886                 bt_dev_err(hdev, "Failed to send wmt rst (%d)", err);
2887                 goto err_release_fw;
2888         }
2889
2890         /* Wait a few moments for firmware activation done */
2891         usleep_range(10000, 12000);
2892
2893 err_release_fw:
2894         release_firmware(fw);
2895
2896         return err;
2897 }
2898
2899 static int btusb_mtk_func_query(struct hci_dev *hdev)
2900 {
2901         struct btmtk_hci_wmt_params wmt_params;
2902         int status, err;
2903         u8 param = 0;
2904
2905         /* Query whether the function is enabled */
2906         wmt_params.op = BTMTK_WMT_FUNC_CTRL;
2907         wmt_params.flag = 4;
2908         wmt_params.dlen = sizeof(param);
2909         wmt_params.data = &param;
2910         wmt_params.status = &status;
2911
2912         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2913         if (err < 0) {
2914                 bt_dev_err(hdev, "Failed to query function status (%d)", err);
2915                 return err;
2916         }
2917
2918         return status;
2919 }
2920
2921 static int btusb_mtk_reg_read(struct btusb_data *data, u32 reg, u32 *val)
2922 {
2923         int pipe, err, size = sizeof(u32);
2924         void *buf;
2925
2926         buf = kzalloc(size, GFP_KERNEL);
2927         if (!buf)
2928                 return -ENOMEM;
2929
2930         pipe = usb_rcvctrlpipe(data->udev, 0);
2931         err = usb_control_msg(data->udev, pipe, 0x63,
2932                               USB_TYPE_VENDOR | USB_DIR_IN,
2933                               reg >> 16, reg & 0xffff,
2934                               buf, size, USB_CTRL_SET_TIMEOUT);
2935         if (err < 0)
2936                 goto err_free_buf;
2937
2938         *val = get_unaligned_le32(buf);
2939
2940 err_free_buf:
2941         kfree(buf);
2942
2943         return err;
2944 }
2945
2946 static int btusb_mtk_id_get(struct btusb_data *data, u32 *id)
2947 {
2948         return btusb_mtk_reg_read(data, 0x80000008, id);
2949 }
2950
2951 static int btusb_mtk_setup(struct hci_dev *hdev)
2952 {
2953         struct btusb_data *data = hci_get_drvdata(hdev);
2954         struct btmtk_hci_wmt_params wmt_params;
2955         ktime_t calltime, delta, rettime;
2956         struct btmtk_tci_sleep tci_sleep;
2957         unsigned long long duration;
2958         struct sk_buff *skb;
2959         const char *fwname;
2960         int err, status;
2961         u32 dev_id;
2962         u8 param;
2963
2964         calltime = ktime_get();
2965
2966         err = btusb_mtk_id_get(data, &dev_id);
2967         if (err < 0) {
2968                 bt_dev_err(hdev, "Failed to get device id (%d)", err);
2969                 return err;
2970         }
2971
2972         switch (dev_id) {
2973         case 0x7663:
2974                 fwname = FIRMWARE_MT7663;
2975                 break;
2976         case 0x7668:
2977                 fwname = FIRMWARE_MT7668;
2978                 break;
2979         default:
2980                 bt_dev_err(hdev, "Unsupported support hardware variant (%08x)",
2981                            dev_id);
2982                 return -ENODEV;
2983         }
2984
2985         /* Query whether the firmware is already download */
2986         wmt_params.op = BTMTK_WMT_SEMAPHORE;
2987         wmt_params.flag = 1;
2988         wmt_params.dlen = 0;
2989         wmt_params.data = NULL;
2990         wmt_params.status = &status;
2991
2992         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2993         if (err < 0) {
2994                 bt_dev_err(hdev, "Failed to query firmware status (%d)", err);
2995                 return err;
2996         }
2997
2998         if (status == BTMTK_WMT_PATCH_DONE) {
2999                 bt_dev_info(hdev, "firmware already downloaded");
3000                 goto ignore_setup_fw;
3001         }
3002
3003         /* Setup a firmware which the device definitely requires */
3004         err = btusb_mtk_setup_firmware(hdev, fwname);
3005         if (err < 0)
3006                 return err;
3007
3008 ignore_setup_fw:
3009         err = readx_poll_timeout(btusb_mtk_func_query, hdev, status,
3010                                  status < 0 || status != BTMTK_WMT_ON_PROGRESS,
3011                                  2000, 5000000);
3012         /* -ETIMEDOUT happens */
3013         if (err < 0)
3014                 return err;
3015
3016         /* The other errors happen in btusb_mtk_func_query */
3017         if (status < 0)
3018                 return status;
3019
3020         if (status == BTMTK_WMT_ON_DONE) {
3021                 bt_dev_info(hdev, "function already on");
3022                 goto ignore_func_on;
3023         }
3024
3025         /* Enable Bluetooth protocol */
3026         param = 1;
3027         wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3028         wmt_params.flag = 0;
3029         wmt_params.dlen = sizeof(param);
3030         wmt_params.data = &param;
3031         wmt_params.status = NULL;
3032
3033         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3034         if (err < 0) {
3035                 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
3036                 return err;
3037         }
3038
3039 ignore_func_on:
3040         /* Apply the low power environment setup */
3041         tci_sleep.mode = 0x5;
3042         tci_sleep.duration = cpu_to_le16(0x640);
3043         tci_sleep.host_duration = cpu_to_le16(0x640);
3044         tci_sleep.host_wakeup_pin = 0;
3045         tci_sleep.time_compensation = 0;
3046
3047         skb = __hci_cmd_sync(hdev, 0xfc7a, sizeof(tci_sleep), &tci_sleep,
3048                              HCI_INIT_TIMEOUT);
3049         if (IS_ERR(skb)) {
3050                 err = PTR_ERR(skb);
3051                 bt_dev_err(hdev, "Failed to apply low power setting (%d)", err);
3052                 return err;
3053         }
3054         kfree_skb(skb);
3055
3056         rettime = ktime_get();
3057         delta = ktime_sub(rettime, calltime);
3058         duration = (unsigned long long)ktime_to_ns(delta) >> 10;
3059
3060         bt_dev_info(hdev, "Device setup in %llu usecs", duration);
3061
3062         return 0;
3063 }
3064
3065 static int btusb_mtk_shutdown(struct hci_dev *hdev)
3066 {
3067         struct btmtk_hci_wmt_params wmt_params;
3068         u8 param = 0;
3069         int err;
3070
3071         /* Disable the device */
3072         wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3073         wmt_params.flag = 0;
3074         wmt_params.dlen = sizeof(param);
3075         wmt_params.data = &param;
3076         wmt_params.status = NULL;
3077
3078         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3079         if (err < 0) {
3080                 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
3081                 return err;
3082         }
3083
3084         return 0;
3085 }
3086
3087 /*(DEBLOBBED)*/
3088
3089 #ifdef CONFIG_PM
3090 /* Configure an out-of-band gpio as wake-up pin, if specified in device tree */
3091 static int marvell_config_oob_wake(struct hci_dev *hdev)
3092 {
3093         struct sk_buff *skb;
3094         struct btusb_data *data = hci_get_drvdata(hdev);
3095         struct device *dev = &data->udev->dev;
3096         u16 pin, gap, opcode;
3097         int ret;
3098         u8 cmd[5];
3099
3100         /* Move on if no wakeup pin specified */
3101         if (of_property_read_u16(dev->of_node, "marvell,wakeup-pin", &pin) ||
3102             of_property_read_u16(dev->of_node, "marvell,wakeup-gap-ms", &gap))
3103                 return 0;
3104
3105         /* Vendor specific command to configure a GPIO as wake-up pin */
3106         opcode = hci_opcode_pack(0x3F, 0x59);
3107         cmd[0] = opcode & 0xFF;
3108         cmd[1] = opcode >> 8;
3109         cmd[2] = 2; /* length of parameters that follow */
3110         cmd[3] = pin;
3111         cmd[4] = gap; /* time in ms, for which wakeup pin should be asserted */
3112
3113         skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
3114         if (!skb) {
3115                 bt_dev_err(hdev, "%s: No memory\n", __func__);
3116                 return -ENOMEM;
3117         }
3118
3119         skb_put_data(skb, cmd, sizeof(cmd));
3120         hci_skb_pkt_type(skb) = HCI_COMMAND_PKT;
3121
3122         ret = btusb_send_frame(hdev, skb);
3123         if (ret) {
3124                 bt_dev_err(hdev, "%s: configuration failed\n", __func__);
3125                 kfree_skb(skb);
3126                 return ret;
3127         }
3128
3129         return 0;
3130 }
3131 #endif
3132
3133 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
3134                                     const bdaddr_t *bdaddr)
3135 {
3136         struct sk_buff *skb;
3137         u8 buf[8];
3138         long ret;
3139
3140         buf[0] = 0xfe;
3141         buf[1] = sizeof(bdaddr_t);
3142         memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
3143
3144         skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
3145         if (IS_ERR(skb)) {
3146                 ret = PTR_ERR(skb);
3147                 bt_dev_err(hdev, "changing Marvell device address failed (%ld)",
3148                            ret);
3149                 return ret;
3150         }
3151         kfree_skb(skb);
3152
3153         return 0;
3154 }
3155
3156 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
3157                                     const bdaddr_t *bdaddr)
3158 {
3159         struct sk_buff *skb;
3160         u8 buf[10];
3161         long ret;
3162
3163         buf[0] = 0x01;
3164         buf[1] = 0x01;
3165         buf[2] = 0x00;
3166         buf[3] = sizeof(bdaddr_t);
3167         memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
3168
3169         skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
3170         if (IS_ERR(skb)) {
3171                 ret = PTR_ERR(skb);
3172                 bt_dev_err(hdev, "Change address command failed (%ld)", ret);
3173                 return ret;
3174         }
3175         kfree_skb(skb);
3176
3177         return 0;
3178 }
3179
3180 #define QCA_DFU_PACKET_LEN      4096
3181
3182 #define QCA_GET_TARGET_VERSION  0x09
3183 #define QCA_CHECK_STATUS        0x05
3184 #define QCA_DFU_DOWNLOAD        0x01
3185
3186 #define QCA_SYSCFG_UPDATED      0x40
3187 #define QCA_PATCH_UPDATED       0x80
3188 #define QCA_DFU_TIMEOUT         3000
3189
3190 struct qca_version {
3191         __le32  rom_version;
3192         __le32  patch_version;
3193         __le32  ram_version;
3194         __le32  ref_clock;
3195         __u8    reserved[4];
3196 } __packed;
3197
3198 struct qca_rampatch_version {
3199         __le16  rom_version;
3200         __le16  patch_version;
3201 } __packed;
3202
3203 struct qca_device_info {
3204         u32     rom_version;
3205         u8      rampatch_hdr;   /* length of header in rampatch */
3206         u8      nvm_hdr;        /* length of header in NVM */
3207         u8      ver_offset;     /* offset of version structure in rampatch */
3208 };
3209
3210 static const struct qca_device_info qca_devices_table[] = {
3211         { 0x00000100, 20, 4, 10 }, /* Rome 1.0 */
3212         { 0x00000101, 20, 4, 10 }, /* Rome 1.1 */
3213         { 0x00000200, 28, 4, 18 }, /* Rome 2.0 */
3214         { 0x00000201, 28, 4, 18 }, /* Rome 2.1 */
3215         { 0x00000300, 28, 4, 18 }, /* Rome 3.0 */
3216         { 0x00000302, 28, 4, 18 }, /* Rome 3.2 */
3217 };
3218
3219 static int btusb_qca_send_vendor_req(struct usb_device *udev, u8 request,
3220                                      void *data, u16 size)
3221 {
3222         int pipe, err;
3223         u8 *buf;
3224
3225         buf = kmalloc(size, GFP_KERNEL);
3226         if (!buf)
3227                 return -ENOMEM;
3228
3229         /* Found some of USB hosts have IOT issues with ours so that we should
3230          * not wait until HCI layer is ready.
3231          */
3232         pipe = usb_rcvctrlpipe(udev, 0);
3233         err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
3234                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
3235         if (err < 0) {
3236                 dev_err(&udev->dev, "Failed to access otp area (%d)", err);
3237                 goto done;
3238         }
3239
3240         memcpy(data, buf, size);
3241
3242 done:
3243         kfree(buf);
3244
3245         return err;
3246 }
3247
3248 static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
3249                                        const struct firmware *firmware,
3250                                        size_t hdr_size)
3251 {
3252         struct btusb_data *btdata = hci_get_drvdata(hdev);
3253         struct usb_device *udev = btdata->udev;
3254         size_t count, size, sent = 0;
3255         int pipe, len, err;
3256         u8 *buf;
3257
3258         buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
3259         if (!buf)
3260                 return -ENOMEM;
3261
3262         count = firmware->size;
3263
3264         size = min_t(size_t, count, hdr_size);
3265         memcpy(buf, firmware->data, size);
3266
3267         /* USB patches should go down to controller through USB path
3268          * because binary format fits to go down through USB channel.
3269          * USB control path is for patching headers and USB bulk is for
3270          * patch body.
3271          */
3272         pipe = usb_sndctrlpipe(udev, 0);
3273         err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
3274                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
3275         if (err < 0) {
3276                 bt_dev_err(hdev, "Failed to send headers (%d)", err);
3277                 goto done;
3278         }
3279
3280         sent += size;
3281         count -= size;
3282
3283         while (count) {
3284                 size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
3285
3286                 memcpy(buf, firmware->data + sent, size);
3287
3288                 pipe = usb_sndbulkpipe(udev, 0x02);
3289                 err = usb_bulk_msg(udev, pipe, buf, size, &len,
3290                                    QCA_DFU_TIMEOUT);
3291                 if (err < 0) {
3292                         bt_dev_err(hdev, "Failed to send body at %zd of %zd (%d)",
3293                                    sent, firmware->size, err);
3294                         break;
3295                 }
3296
3297                 if (size != len) {
3298                         bt_dev_err(hdev, "Failed to get bulk buffer");
3299                         err = -EILSEQ;
3300                         break;
3301                 }
3302
3303                 sent  += size;
3304                 count -= size;
3305         }
3306
3307 done:
3308         kfree(buf);
3309         return err;
3310 }
3311
3312 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
3313                                          struct qca_version *ver,
3314                                          const struct qca_device_info *info)
3315 {
3316         struct qca_rampatch_version *rver;
3317         const struct firmware *fw;
3318         u32 ver_rom, ver_patch;
3319         u16 rver_rom, rver_patch;
3320         char fwname[64];
3321         int err;
3322
3323         ver_rom = le32_to_cpu(ver->rom_version);
3324         ver_patch = le32_to_cpu(ver->patch_version);
3325
3326         snprintf(fwname, sizeof(fwname), "/*(DEBLOBBED)*/", ver_rom);
3327
3328         err = reject_firmware(&fw, fwname, &hdev->dev);
3329         if (err) {
3330                 bt_dev_err(hdev, "failed to request rampatch file: %s (%d)",
3331                            fwname, err);
3332                 return err;
3333         }
3334
3335         bt_dev_info(hdev, "using rampatch file: %s", fwname);
3336
3337         rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
3338         rver_rom = le16_to_cpu(rver->rom_version);
3339         rver_patch = le16_to_cpu(rver->patch_version);
3340
3341         bt_dev_info(hdev, "QCA: patch rome 0x%x build 0x%x, "
3342                     "firmware rome 0x%x build 0x%x",
3343                     rver_rom, rver_patch, ver_rom, ver_patch);
3344
3345         if (rver_rom != ver_rom || rver_patch <= ver_patch) {
3346                 bt_dev_err(hdev, "rampatch file version did not match with firmware");
3347                 err = -EINVAL;
3348                 goto done;
3349         }
3350
3351         err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
3352
3353 done:
3354         release_firmware(fw);
3355
3356         return err;
3357 }
3358
3359 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
3360                                     struct qca_version *ver,
3361                                     const struct qca_device_info *info)
3362 {
3363         const struct firmware *fw;
3364         char fwname[64];
3365         int err;
3366
3367         snprintf(fwname, sizeof(fwname), "/*(DEBLOBBED)*/",
3368                  le32_to_cpu(ver->rom_version));
3369
3370         err = reject_firmware(&fw, fwname, &hdev->dev);
3371         if (err) {
3372                 bt_dev_err(hdev, "failed to request NVM file: %s (%d)",
3373                            fwname, err);
3374                 return err;
3375         }
3376
3377         bt_dev_info(hdev, "using NVM file: %s", fwname);
3378
3379         err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
3380
3381         release_firmware(fw);
3382
3383         return err;
3384 }
3385
3386 /* identify the ROM version and check whether patches are needed */
3387 static bool btusb_qca_need_patch(struct usb_device *udev)
3388 {
3389         struct qca_version ver;
3390
3391         if (btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3392                                       sizeof(ver)) < 0)
3393                 return false;
3394         /* only low ROM versions need patches */
3395         return !(le32_to_cpu(ver.rom_version) & ~0xffffU);
3396 }
3397
3398 static int btusb_setup_qca(struct hci_dev *hdev)
3399 {
3400         struct btusb_data *btdata = hci_get_drvdata(hdev);
3401         struct usb_device *udev = btdata->udev;
3402         const struct qca_device_info *info = NULL;
3403         struct qca_version ver;
3404         u32 ver_rom;
3405         u8 status;
3406         int i, err;
3407
3408         err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3409                                         sizeof(ver));
3410         if (err < 0)
3411                 return err;
3412
3413         ver_rom = le32_to_cpu(ver.rom_version);
3414         /* Don't care about high ROM versions */
3415         if (ver_rom & ~0xffffU)
3416                 return 0;
3417
3418         for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
3419                 if (ver_rom == qca_devices_table[i].rom_version)
3420                         info = &qca_devices_table[i];
3421         }
3422         if (!info) {
3423                 bt_dev_err(hdev, "don't support firmware rome 0x%x", ver_rom);
3424                 return -ENODEV;
3425         }
3426
3427         err = btusb_qca_send_vendor_req(udev, QCA_CHECK_STATUS, &status,
3428                                         sizeof(status));
3429         if (err < 0)
3430                 return err;
3431
3432         if (!(status & QCA_PATCH_UPDATED)) {
3433                 err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
3434                 if (err < 0)
3435                         return err;
3436         }
3437
3438         if (!(status & QCA_SYSCFG_UPDATED)) {
3439                 err = btusb_setup_qca_load_nvm(hdev, &ver, info);
3440                 if (err < 0)
3441                         return err;
3442         }
3443
3444         return 0;
3445 }
3446
3447 static inline int __set_diag_interface(struct hci_dev *hdev)
3448 {
3449         struct btusb_data *data = hci_get_drvdata(hdev);
3450         struct usb_interface *intf = data->diag;
3451         int i;
3452
3453         if (!data->diag)
3454                 return -ENODEV;
3455
3456         data->diag_tx_ep = NULL;
3457         data->diag_rx_ep = NULL;
3458
3459         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
3460                 struct usb_endpoint_descriptor *ep_desc;
3461
3462                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
3463
3464                 if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
3465                         data->diag_tx_ep = ep_desc;
3466                         continue;
3467                 }
3468
3469                 if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
3470                         data->diag_rx_ep = ep_desc;
3471                         continue;
3472                 }
3473         }
3474
3475         if (!data->diag_tx_ep || !data->diag_rx_ep) {
3476                 bt_dev_err(hdev, "invalid diagnostic descriptors");
3477                 return -ENODEV;
3478         }
3479
3480         return 0;
3481 }
3482
3483 static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable)
3484 {
3485         struct btusb_data *data = hci_get_drvdata(hdev);
3486         struct sk_buff *skb;
3487         struct urb *urb;
3488         unsigned int pipe;
3489
3490         if (!data->diag_tx_ep)
3491                 return ERR_PTR(-ENODEV);
3492
3493         urb = usb_alloc_urb(0, GFP_KERNEL);
3494         if (!urb)
3495                 return ERR_PTR(-ENOMEM);
3496
3497         skb = bt_skb_alloc(2, GFP_KERNEL);
3498         if (!skb) {
3499                 usb_free_urb(urb);
3500                 return ERR_PTR(-ENOMEM);
3501         }
3502
3503         skb_put_u8(skb, 0xf0);
3504         skb_put_u8(skb, enable);
3505
3506         pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress);
3507
3508         usb_fill_bulk_urb(urb, data->udev, pipe,
3509                           skb->data, skb->len, btusb_tx_complete, skb);
3510
3511         skb->dev = (void *)hdev;
3512
3513         return urb;
3514 }
3515
3516 static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable)
3517 {
3518         struct btusb_data *data = hci_get_drvdata(hdev);
3519         struct urb *urb;
3520
3521         if (!data->diag)
3522                 return -ENODEV;
3523
3524         if (!test_bit(HCI_RUNNING, &hdev->flags))
3525                 return -ENETDOWN;
3526
3527         urb = alloc_diag_urb(hdev, enable);
3528         if (IS_ERR(urb))
3529                 return PTR_ERR(urb);
3530
3531         return submit_or_queue_tx_urb(hdev, urb);
3532 }
3533
3534 #ifdef CONFIG_PM
3535 static irqreturn_t btusb_oob_wake_handler(int irq, void *priv)
3536 {
3537         struct btusb_data *data = priv;
3538
3539         pm_wakeup_event(&data->udev->dev, 0);
3540         pm_system_wakeup();
3541
3542         /* Disable only if not already disabled (keep it balanced) */
3543         if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
3544                 disable_irq_nosync(irq);
3545                 disable_irq_wake(irq);
3546         }
3547         return IRQ_HANDLED;
3548 }
3549
3550 static const struct of_device_id btusb_match_table[] = {
3551         { .compatible = "usb1286,204e" },
3552         { .compatible = "usbcf3,e300" }, /* QCA6174A */
3553         { .compatible = "usb4ca,301a" }, /* QCA6174A (Lite-On) */
3554         { }
3555 };
3556 MODULE_DEVICE_TABLE(of, btusb_match_table);
3557
3558 /* Use an oob wakeup pin? */
3559 static int btusb_config_oob_wake(struct hci_dev *hdev)
3560 {
3561         struct btusb_data *data = hci_get_drvdata(hdev);
3562         struct device *dev = &data->udev->dev;
3563         int irq, ret;
3564
3565         clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
3566
3567         if (!of_match_device(btusb_match_table, dev))
3568                 return 0;
3569
3570         /* Move on if no IRQ specified */
3571         irq = of_irq_get_byname(dev->of_node, "wakeup");
3572         if (irq <= 0) {
3573                 bt_dev_dbg(hdev, "%s: no OOB Wakeup IRQ in DT", __func__);
3574                 return 0;
3575         }
3576
3577         irq_set_status_flags(irq, IRQ_NOAUTOEN);
3578         ret = devm_request_irq(&hdev->dev, irq, btusb_oob_wake_handler,
3579                                0, "OOB Wake-on-BT", data);
3580         if (ret) {
3581                 bt_dev_err(hdev, "%s: IRQ request failed", __func__);
3582                 return ret;
3583         }
3584
3585         ret = device_init_wakeup(dev, true);
3586         if (ret) {
3587                 bt_dev_err(hdev, "%s: failed to init_wakeup", __func__);
3588                 return ret;
3589         }
3590
3591         data->oob_wake_irq = irq;
3592         bt_dev_info(hdev, "OOB Wake-on-BT configured at IRQ %u", irq);
3593         return 0;
3594 }
3595 #endif
3596
3597 static void btusb_check_needs_reset_resume(struct usb_interface *intf)
3598 {
3599         if (dmi_check_system(btusb_needs_reset_resume_table))
3600                 interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME;
3601 }
3602
3603 static int btusb_probe(struct usb_interface *intf,
3604                        const struct usb_device_id *id)
3605 {
3606         struct usb_endpoint_descriptor *ep_desc;
3607         struct gpio_desc *reset_gpio;
3608         struct btusb_data *data;
3609         struct hci_dev *hdev;
3610         unsigned ifnum_base;
3611         int i, err;
3612
3613         BT_DBG("intf %p id %p", intf, id);
3614
3615         /* interface numbers are hardcoded in the spec */
3616         if (intf->cur_altsetting->desc.bInterfaceNumber != 0) {
3617                 if (!(id->driver_info & BTUSB_IFNUM_2))
3618                         return -ENODEV;
3619                 if (intf->cur_altsetting->desc.bInterfaceNumber != 2)
3620                         return -ENODEV;
3621         }
3622
3623         ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber;
3624
3625         if (!id->driver_info) {
3626                 const struct usb_device_id *match;
3627
3628                 match = usb_match_id(intf, blacklist_table);
3629                 if (match)
3630                         id = match;
3631         }
3632
3633         if (id->driver_info == BTUSB_IGNORE)
3634                 return -ENODEV;
3635
3636         if (id->driver_info & BTUSB_ATH3012) {
3637                 struct usb_device *udev = interface_to_usbdev(intf);
3638
3639                 /* Old firmware would otherwise let ath3k driver load
3640                  * patch and sysconfig files
3641                  */
3642                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001 &&
3643                     !btusb_qca_need_patch(udev))
3644                         return -ENODEV;
3645         }
3646
3647         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
3648         if (!data)
3649                 return -ENOMEM;
3650
3651         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
3652                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
3653
3654                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
3655                         data->intr_ep = ep_desc;
3656                         continue;
3657                 }
3658
3659                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
3660                         data->bulk_tx_ep = ep_desc;
3661                         continue;
3662                 }
3663
3664                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
3665                         data->bulk_rx_ep = ep_desc;
3666                         continue;
3667                 }
3668         }
3669
3670         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
3671                 return -ENODEV;
3672
3673         if (id->driver_info & BTUSB_AMP) {
3674                 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
3675                 data->cmdreq = 0x2b;
3676         } else {
3677                 data->cmdreq_type = USB_TYPE_CLASS;
3678                 data->cmdreq = 0x00;
3679         }
3680
3681         data->udev = interface_to_usbdev(intf);
3682         data->intf = intf;
3683
3684         INIT_WORK(&data->work, btusb_work);
3685         INIT_WORK(&data->waker, btusb_waker);
3686         init_usb_anchor(&data->deferred);
3687         init_usb_anchor(&data->tx_anchor);
3688         spin_lock_init(&data->txlock);
3689
3690         init_usb_anchor(&data->intr_anchor);
3691         init_usb_anchor(&data->bulk_anchor);
3692         init_usb_anchor(&data->isoc_anchor);
3693         init_usb_anchor(&data->diag_anchor);
3694         init_usb_anchor(&data->ctrl_anchor);
3695         spin_lock_init(&data->rxlock);
3696
3697         if (id->driver_info & BTUSB_INTEL_NEW) {
3698                 data->recv_event = btusb_recv_event_intel;
3699                 data->recv_bulk = btusb_recv_bulk_intel;
3700                 set_bit(BTUSB_BOOTLOADER, &data->flags);
3701         } else {
3702                 data->recv_event = hci_recv_frame;
3703                 data->recv_bulk = btusb_recv_bulk;
3704         }
3705
3706         hdev = hci_alloc_dev();
3707         if (!hdev)
3708                 return -ENOMEM;
3709
3710         hdev->bus = HCI_USB;
3711         hci_set_drvdata(hdev, data);
3712
3713         if (id->driver_info & BTUSB_AMP)
3714                 hdev->dev_type = HCI_AMP;
3715         else
3716                 hdev->dev_type = HCI_PRIMARY;
3717
3718         data->hdev = hdev;
3719
3720         SET_HCIDEV_DEV(hdev, &intf->dev);
3721
3722         reset_gpio = gpiod_get_optional(&data->udev->dev, "reset",
3723                                         GPIOD_OUT_LOW);
3724         if (IS_ERR(reset_gpio)) {
3725                 err = PTR_ERR(reset_gpio);
3726                 goto out_free_dev;
3727         } else if (reset_gpio) {
3728                 data->reset_gpio = reset_gpio;
3729         }
3730
3731         hdev->open   = btusb_open;
3732         hdev->close  = btusb_close;
3733         hdev->flush  = btusb_flush;
3734         hdev->send   = btusb_send_frame;
3735         hdev->notify = btusb_notify;
3736
3737 #ifdef CONFIG_PM
3738         err = btusb_config_oob_wake(hdev);
3739         if (err)
3740                 goto out_free_dev;
3741
3742         /* Marvell devices may need a specific chip configuration */
3743         if (id->driver_info & BTUSB_MARVELL && data->oob_wake_irq) {
3744                 err = marvell_config_oob_wake(hdev);
3745                 if (err)
3746                         goto out_free_dev;
3747         }
3748 #endif
3749         if (id->driver_info & BTUSB_CW6622)
3750                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
3751
3752         if (id->driver_info & BTUSB_BCM2045)
3753                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
3754
3755         if (id->driver_info & BTUSB_BCM92035)
3756                 hdev->setup = btusb_setup_bcm92035;
3757
3758         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) &&
3759             (id->driver_info & BTUSB_BCM_PATCHRAM)) {
3760                 hdev->manufacturer = 15;
3761                 hdev->setup = btbcm_setup_patchram;
3762                 hdev->set_diag = btusb_bcm_set_diag;
3763                 hdev->set_bdaddr = btbcm_set_bdaddr;
3764
3765                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
3766                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
3767         }
3768
3769         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) &&
3770             (id->driver_info & BTUSB_BCM_APPLE)) {
3771                 hdev->manufacturer = 15;
3772                 hdev->setup = btbcm_setup_apple;
3773                 hdev->set_diag = btusb_bcm_set_diag;
3774
3775                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
3776                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
3777         }
3778
3779         if (id->driver_info & BTUSB_INTEL) {
3780                 hdev->manufacturer = 2;
3781                 hdev->setup = btusb_setup_intel;
3782                 hdev->shutdown = btusb_shutdown_intel;
3783                 hdev->set_diag = btintel_set_diag_mfg;
3784                 hdev->set_bdaddr = btintel_set_bdaddr;
3785                 hdev->cmd_timeout = btusb_intel_cmd_timeout;
3786                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3787                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3788                 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
3789         }
3790
3791         if (id->driver_info & BTUSB_INTEL_NEW) {
3792                 hdev->manufacturer = 2;
3793                 hdev->send = btusb_send_frame_intel;
3794                 hdev->setup = btusb_setup_intel_new;
3795                 hdev->shutdown = btusb_shutdown_intel_new;
3796                 hdev->hw_error = btintel_hw_error;
3797                 hdev->set_diag = btintel_set_diag;
3798                 hdev->set_bdaddr = btintel_set_bdaddr;
3799                 hdev->cmd_timeout = btusb_intel_cmd_timeout;
3800                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3801                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3802                 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
3803         }
3804
3805         if (id->driver_info & BTUSB_MARVELL)
3806                 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
3807
3808         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_MTK) &&
3809             (id->driver_info & BTUSB_MEDIATEK)) {
3810                 hdev->setup = btusb_mtk_setup;
3811                 hdev->shutdown = btusb_mtk_shutdown;
3812                 hdev->manufacturer = 70;
3813                 set_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks);
3814         }
3815
3816         if (id->driver_info & BTUSB_SWAVE) {
3817                 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
3818                 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
3819         }
3820
3821         if (id->driver_info & BTUSB_INTEL_BOOT) {
3822                 hdev->manufacturer = 2;
3823                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3824         }
3825
3826         if (id->driver_info & BTUSB_ATH3012) {
3827                 data->setup_on_usb = btusb_setup_qca;
3828                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
3829                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3830                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3831         }
3832
3833         if (id->driver_info & BTUSB_QCA_ROME) {
3834                 data->setup_on_usb = btusb_setup_qca;
3835                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
3836                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3837                 btusb_check_needs_reset_resume(intf);
3838         }
3839
3840         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_RTL) &&
3841             (id->driver_info & BTUSB_REALTEK)) {
3842                 hdev->setup = btrtl_setup_realtek;
3843                 hdev->shutdown = btrtl_shutdown_realtek;
3844                 hdev->cmd_timeout = btusb_rtl_cmd_timeout;
3845
3846                 /* Realtek devices lose their updated firmware over global
3847                  * suspend that means host doesn't send SET_FEATURE
3848                  * (DEVICE_REMOTE_WAKEUP)
3849                  */
3850                 set_bit(BTUSB_WAKEUP_DISABLE, &data->flags);
3851
3852                 err = usb_autopm_get_interface(intf);
3853                 if (err < 0)
3854                         goto out_free_dev;
3855         }
3856
3857         if (id->driver_info & BTUSB_AMP) {
3858                 /* AMP controllers do not support SCO packets */
3859                 data->isoc = NULL;
3860         } else {
3861                 /* Interface orders are hardcoded in the specification */
3862                 data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1);
3863                 data->isoc_ifnum = ifnum_base + 1;
3864         }
3865
3866         if (!reset)
3867                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3868
3869         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
3870                 if (!disable_scofix)
3871                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
3872         }
3873
3874         if (id->driver_info & BTUSB_BROKEN_ISOC)
3875                 data->isoc = NULL;
3876
3877         if (id->driver_info & BTUSB_WIDEBAND_SPEECH)
3878                 set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED, &hdev->quirks);
3879
3880         if (id->driver_info & BTUSB_DIGIANSWER) {
3881                 data->cmdreq_type = USB_TYPE_VENDOR;
3882                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3883         }
3884
3885         if (id->driver_info & BTUSB_CSR) {
3886                 struct usb_device *udev = data->udev;
3887                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
3888
3889                 /* Old firmware would otherwise execute USB reset */
3890                 if (bcdDevice < 0x117)
3891                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3892
3893                 /* Fake CSR devices with broken commands */
3894                 if (bcdDevice <= 0x100 || bcdDevice == 0x134)
3895                         hdev->setup = btusb_setup_csr;
3896
3897                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3898         }
3899
3900         if (id->driver_info & BTUSB_SNIFFER) {
3901                 struct usb_device *udev = data->udev;
3902
3903                 /* New sniffer firmware has crippled HCI interface */
3904                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
3905                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3906         }
3907
3908         if (id->driver_info & BTUSB_INTEL_BOOT) {
3909                 /* A bug in the bootloader causes that interrupt interface is
3910                  * only enabled after receiving SetInterface(0, AltSetting=0).
3911                  */
3912                 err = usb_set_interface(data->udev, 0, 0);
3913                 if (err < 0) {
3914                         BT_ERR("failed to set interface 0, alt 0 %d", err);
3915                         goto out_free_dev;
3916                 }
3917         }
3918
3919         if (data->isoc) {
3920                 err = usb_driver_claim_interface(&btusb_driver,
3921                                                  data->isoc, data);
3922                 if (err < 0)
3923                         goto out_free_dev;
3924         }
3925
3926         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) && data->diag) {
3927                 if (!usb_driver_claim_interface(&btusb_driver,
3928                                                 data->diag, data))
3929                         __set_diag_interface(hdev);
3930                 else
3931                         data->diag = NULL;
3932         }
3933
3934         if (enable_autosuspend)
3935                 usb_enable_autosuspend(data->udev);
3936
3937         err = hci_register_dev(hdev);
3938         if (err < 0)
3939                 goto out_free_dev;
3940
3941         usb_set_intfdata(intf, data);
3942
3943         return 0;
3944
3945 out_free_dev:
3946         if (data->reset_gpio)
3947                 gpiod_put(data->reset_gpio);
3948         hci_free_dev(hdev);
3949         return err;
3950 }
3951
3952 static void btusb_disconnect(struct usb_interface *intf)
3953 {
3954         struct btusb_data *data = usb_get_intfdata(intf);
3955         struct hci_dev *hdev;
3956
3957         BT_DBG("intf %p", intf);
3958
3959         if (!data)
3960                 return;
3961
3962         hdev = data->hdev;
3963         usb_set_intfdata(data->intf, NULL);
3964
3965         if (data->isoc)
3966                 usb_set_intfdata(data->isoc, NULL);
3967
3968         if (data->diag)
3969                 usb_set_intfdata(data->diag, NULL);
3970
3971         hci_unregister_dev(hdev);
3972
3973         if (intf == data->intf) {
3974                 if (data->isoc)
3975                         usb_driver_release_interface(&btusb_driver, data->isoc);
3976                 if (data->diag)
3977                         usb_driver_release_interface(&btusb_driver, data->diag);
3978         } else if (intf == data->isoc) {
3979                 if (data->diag)
3980                         usb_driver_release_interface(&btusb_driver, data->diag);
3981                 usb_driver_release_interface(&btusb_driver, data->intf);
3982         } else if (intf == data->diag) {
3983                 usb_driver_release_interface(&btusb_driver, data->intf);
3984                 if (data->isoc)
3985                         usb_driver_release_interface(&btusb_driver, data->isoc);
3986         }
3987
3988         if (data->oob_wake_irq)
3989                 device_init_wakeup(&data->udev->dev, false);
3990
3991         if (data->reset_gpio)
3992                 gpiod_put(data->reset_gpio);
3993
3994         hci_free_dev(hdev);
3995 }
3996
3997 #ifdef CONFIG_PM
3998 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
3999 {
4000         struct btusb_data *data = usb_get_intfdata(intf);
4001
4002         BT_DBG("intf %p", intf);
4003
4004         if (data->suspend_count++)
4005                 return 0;
4006
4007         spin_lock_irq(&data->txlock);
4008         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
4009                 set_bit(BTUSB_SUSPENDING, &data->flags);
4010                 spin_unlock_irq(&data->txlock);
4011         } else {
4012                 spin_unlock_irq(&data->txlock);
4013                 data->suspend_count--;
4014                 return -EBUSY;
4015         }
4016
4017         cancel_work_sync(&data->work);
4018
4019         btusb_stop_traffic(data);
4020         usb_kill_anchored_urbs(&data->tx_anchor);
4021
4022         if (data->oob_wake_irq && device_may_wakeup(&data->udev->dev)) {
4023                 set_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
4024                 enable_irq_wake(data->oob_wake_irq);
4025                 enable_irq(data->oob_wake_irq);
4026         }
4027
4028         /* For global suspend, Realtek devices lose the loaded fw
4029          * in them. But for autosuspend, firmware should remain.
4030          * Actually, it depends on whether the usb host sends
4031          * set feature (enable wakeup) or not.
4032          */
4033         if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags)) {
4034                 if (PMSG_IS_AUTO(message) &&
4035                     device_can_wakeup(&data->udev->dev))
4036                         data->udev->do_remote_wakeup = 1;
4037                 else if (!PMSG_IS_AUTO(message))
4038                         data->udev->reset_resume = 1;
4039         }
4040
4041         return 0;
4042 }
4043
4044 static void play_deferred(struct btusb_data *data)
4045 {
4046         struct urb *urb;
4047         int err;
4048
4049         while ((urb = usb_get_from_anchor(&data->deferred))) {
4050                 usb_anchor_urb(urb, &data->tx_anchor);
4051
4052                 err = usb_submit_urb(urb, GFP_ATOMIC);
4053                 if (err < 0) {
4054                         if (err != -EPERM && err != -ENODEV)
4055                                 BT_ERR("%s urb %p submission failed (%d)",
4056                                        data->hdev->name, urb, -err);
4057                         kfree(urb->setup_packet);
4058                         usb_unanchor_urb(urb);
4059                         usb_free_urb(urb);
4060                         break;
4061                 }
4062
4063                 data->tx_in_flight++;
4064                 usb_free_urb(urb);
4065         }
4066
4067         /* Cleanup the rest deferred urbs. */
4068         while ((urb = usb_get_from_anchor(&data->deferred))) {
4069                 kfree(urb->setup_packet);
4070                 usb_free_urb(urb);
4071         }
4072 }
4073
4074 static int btusb_resume(struct usb_interface *intf)
4075 {
4076         struct btusb_data *data = usb_get_intfdata(intf);
4077         struct hci_dev *hdev = data->hdev;
4078         int err = 0;
4079
4080         BT_DBG("intf %p", intf);
4081
4082         if (--data->suspend_count)
4083                 return 0;
4084
4085         /* Disable only if not already disabled (keep it balanced) */
4086         if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
4087                 disable_irq(data->oob_wake_irq);
4088                 disable_irq_wake(data->oob_wake_irq);
4089         }
4090
4091         if (!test_bit(HCI_RUNNING, &hdev->flags))
4092                 goto done;
4093
4094         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
4095                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
4096                 if (err < 0) {
4097                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
4098                         goto failed;
4099                 }
4100         }
4101
4102         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
4103                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
4104                 if (err < 0) {
4105                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
4106                         goto failed;
4107                 }
4108
4109                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
4110         }
4111
4112         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
4113                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
4114                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
4115                 else
4116                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
4117         }
4118
4119         spin_lock_irq(&data->txlock);
4120         play_deferred(data);
4121         clear_bit(BTUSB_SUSPENDING, &data->flags);
4122         spin_unlock_irq(&data->txlock);
4123         schedule_work(&data->work);
4124
4125         return 0;
4126
4127 failed:
4128         usb_scuttle_anchored_urbs(&data->deferred);
4129 done:
4130         spin_lock_irq(&data->txlock);
4131         clear_bit(BTUSB_SUSPENDING, &data->flags);
4132         spin_unlock_irq(&data->txlock);
4133
4134         return err;
4135 }
4136 #endif
4137
4138 static struct usb_driver btusb_driver = {
4139         .name           = "btusb",
4140         .probe          = btusb_probe,
4141         .disconnect     = btusb_disconnect,
4142 #ifdef CONFIG_PM
4143         .suspend        = btusb_suspend,
4144         .resume         = btusb_resume,
4145 #endif
4146         .id_table       = btusb_table,
4147         .supports_autosuspend = 1,
4148         .disable_hub_initiated_lpm = 1,
4149 };
4150
4151 module_usb_driver(btusb_driver);
4152
4153 module_param(disable_scofix, bool, 0644);
4154 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
4155
4156 module_param(force_scofix, bool, 0644);
4157 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
4158
4159 module_param(enable_autosuspend, bool, 0644);
4160 MODULE_PARM_DESC(enable_autosuspend, "Enable USB autosuspend by default");
4161
4162 module_param(reset, bool, 0644);
4163 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
4164
4165 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
4166 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
4167 MODULE_VERSION(VERSION);
4168 MODULE_LICENSE("GPL");