drivers/bluetooth/btusb.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  *
   4  *  Generic Bluetooth USB driver
   5  *
   6  *  Copyright (C) 2005-2008  Marcel Holtmann <marcel@holtmann.org>
   7  */
   8
   9 #include <linux/dmi.h>
  10 #include <linux/module.h>
  11 #include <linux/usb.h>
  12 #include <linux/usb/quirks.h>
  13 #include <linux/firmware.h>
  14 #include <linux/iopoll.h>
  15 #include <linux/of_device.h>
  16 #include <linux/of_irq.h>
  17 #include <linux/suspend.h>
  18 #include <linux/gpio/consumer.h>
  19 #include <asm/unaligned.h>
  20
  21 #include <net/bluetooth/bluetooth.h>
  22 #include <net/bluetooth/hci_core.h>
  23
  24 #include "btintel.h"
  25 #include "btbcm.h"
  26 #include "btrtl.h"
  27
  28 #define VERSION "0.8"
  29
  30 static bool disable_scofix;
  31 static bool force_scofix;
  32 static bool enable_autosuspend = IS_ENABLED(CONFIG_BT_HCIBTUSB_AUTOSUSPEND);
  33
  34 static bool reset = true;
  35
  36 static struct usb_driver btusb_driver;
  37
  38 #define BTUSB_IGNORE            0x01
  39 #define BTUSB_DIGIANSWER        0x02
  40 #define BTUSB_CSR               0x04
  41 #define BTUSB_SNIFFER           0x08
  42 #define BTUSB_BCM92035          0x10
  43 #define BTUSB_BROKEN_ISOC       0x20
  44 #define BTUSB_WRONG_SCO_MTU     0x40
  45 #define BTUSB_ATH3012           0x80
  46 #define BTUSB_INTEL             0x100
  47 #define BTUSB_INTEL_BOOT        0x200
  48 #define BTUSB_BCM_PATCHRAM      0x400
  49 #define BTUSB_MARVELL           0x800
  50 #define BTUSB_SWAVE             0x1000
  51 #define BTUSB_INTEL_NEW         0x2000
  52 #define BTUSB_AMP               0x4000
  53 #define BTUSB_QCA_ROME          0x8000
  54 #define BTUSB_BCM_APPLE         0x10000
  55 #define BTUSB_REALTEK           0x20000
  56 #define BTUSB_BCM2045           0x40000
  57 #define BTUSB_IFNUM_2           0x80000
  58 #define BTUSB_CW6622            0x100000
  59 #define BTUSB_MEDIATEK          0x200000
  60
  61 static const struct usb_device_id btusb_table[] = {
  62         /* Generic Bluetooth USB device */
  63         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  64
  65         /* Generic Bluetooth AMP device */
  66         { USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP },
  67
  68         /* Generic Bluetooth USB interface */
  69         { USB_INTERFACE_INFO(0xe0, 0x01, 0x01) },
  70
  71         /* Apple-specific (Broadcom) devices */
  72         { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01),
  73           .driver_info = BTUSB_BCM_APPLE | BTUSB_IFNUM_2 },
  74
  75         /* MediaTek MT76x0E */
  76         { USB_DEVICE(0x0e8d, 0x763f) },
  77
  78         /* Broadcom SoftSailing reporting vendor specific */
  79         { USB_DEVICE(0x0a5c, 0x21e1) },
  80
  81         /* Apple MacBookPro 7,1 */
  82         { USB_DEVICE(0x05ac, 0x8213) },
  83
  84         /* Apple iMac11,1 */
  85         { USB_DEVICE(0x05ac, 0x8215) },
  86
  87         /* Apple MacBookPro6,2 */
  88         { USB_DEVICE(0x05ac, 0x8218) },
  89
  90         /* Apple MacBookAir3,1, MacBookAir3,2 */
  91         { USB_DEVICE(0x05ac, 0x821b) },
  92
  93         /* Apple MacBookAir4,1 */
  94         { USB_DEVICE(0x05ac, 0x821f) },
  95
  96         /* Apple MacBookPro8,2 */
  97         { USB_DEVICE(0x05ac, 0x821a) },
  98
  99         /* Apple MacMini5,1 */
 100         { USB_DEVICE(0x05ac, 0x8281) },
 101
 102         /* AVM BlueFRITZ! USB v2.0 */
 103         { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE },
 104
 105         /* Bluetooth Ultraport Module from IBM */
 106         { USB_DEVICE(0x04bf, 0x030a) },
 107
 108         /* ALPS Modules with non-standard id */
 109         { USB_DEVICE(0x044e, 0x3001) },
 110         { USB_DEVICE(0x044e, 0x3002) },
 111
 112         /* Ericsson with non-standard id */
 113         { USB_DEVICE(0x0bdb, 0x1002) },
 114
 115         /* Canyon CN-BTU1 with HID interfaces */
 116         { USB_DEVICE(0x0c10, 0x0000) },
 117
 118         /* Broadcom BCM20702A0 */
 119         { USB_DEVICE(0x413c, 0x8197) },
 120
 121         /* Broadcom BCM20702B0 (Dynex/Insignia) */
 122         { USB_DEVICE(0x19ff, 0x0239), .driver_info = BTUSB_BCM_PATCHRAM },
 123
 124         /* Broadcom BCM43142A0 (Foxconn/Lenovo) */
 125         { USB_VENDOR_AND_INTERFACE_INFO(0x105b, 0xff, 0x01, 0x01),
 126           .driver_info = BTUSB_BCM_PATCHRAM },
 127
 128         /* Broadcom BCM920703 (HTC Vive) */
 129         { USB_VENDOR_AND_INTERFACE_INFO(0x0bb4, 0xff, 0x01, 0x01),
 130           .driver_info = BTUSB_BCM_PATCHRAM },
 131
 132         /* Foxconn - Hon Hai */
 133         { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01),
 134           .driver_info = BTUSB_BCM_PATCHRAM },
 135
 136         /* Lite-On Technology - Broadcom based */
 137         { USB_VENDOR_AND_INTERFACE_INFO(0x04ca, 0xff, 0x01, 0x01),
 138           .driver_info = BTUSB_BCM_PATCHRAM },
 139
 140         /* Broadcom devices with vendor specific id */
 141         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
 142           .driver_info = BTUSB_BCM_PATCHRAM },
 143
 144         /* ASUSTek Computer - Broadcom based */
 145         { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01),
 146           .driver_info = BTUSB_BCM_PATCHRAM },
 147
 148         /* Belkin F8065bf - Broadcom based */
 149         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01),
 150           .driver_info = BTUSB_BCM_PATCHRAM },
 151
 152         /* IMC Networks - Broadcom based */
 153         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01),
 154           .driver_info = BTUSB_BCM_PATCHRAM },
 155
 156         /* Dell Computer - Broadcom based  */
 157         { USB_VENDOR_AND_INTERFACE_INFO(0x413c, 0xff, 0x01, 0x01),
 158           .driver_info = BTUSB_BCM_PATCHRAM },
 159
 160         /* Toshiba Corp - Broadcom based */
 161         { USB_VENDOR_AND_INTERFACE_INFO(0x0930, 0xff, 0x01, 0x01),
 162           .driver_info = BTUSB_BCM_PATCHRAM },
 163
 164         /* Intel Bluetooth USB Bootloader (RAM module) */
 165         { USB_DEVICE(0x8087, 0x0a5a),
 166           .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
 167
 168         { }     /* Terminating entry */
 169 };
 170
 171 MODULE_DEVICE_TABLE(usb, btusb_table);
 172
 173 static const struct usb_device_id blacklist_table[] = {
 174         /* CSR BlueCore devices */
 175         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 176
 177         /* Broadcom BCM2033 without firmware */
 178         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 179
 180         /* Broadcom BCM2045 devices */
 181         { USB_DEVICE(0x0a5c, 0x2045), .driver_info = BTUSB_BCM2045 },
 182
 183         /* Atheros 3011 with sflash firmware */
 184         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 185         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 186         { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE },
 187         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 188         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 189         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 190         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 191
 192         /* Atheros AR9285 Malbec with sflash firmware */
 193         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 194
 195         /* Atheros 3012 with sflash firmware */
 196         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 197         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 198         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 199         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 200         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 201         { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
 202         { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
 203         { USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 },
 204         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 205         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 206         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 207         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 208         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 209         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 210         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 211         { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
 212         { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
 213         { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
 214         { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 },
 215         { USB_DEVICE(0x04ca, 0x3018), .driver_info = BTUSB_ATH3012 },
 216         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 217         { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
 218         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 219         { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
 220         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 221         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 222         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 223         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 224         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 225         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
 226         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 227         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 228         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 229         { USB_DEVICE(0x0cf3, 0x817b), .driver_info = BTUSB_ATH3012 },
 230         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 231         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 232         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 233         { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 },
 234         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 235         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 236         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 237         { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 },
 238         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 239         { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
 240         { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
 241         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
 242         { USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 },
 243         { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
 244         { USB_DEVICE(0x13d3, 0x3487), .driver_info = BTUSB_ATH3012 },
 245         { USB_DEVICE(0x13d3, 0x3490), .driver_info = BTUSB_ATH3012 },
 246
 247         /* Atheros AR5BBU12 with sflash firmware */
 248         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 249
 250         /* Atheros AR5BBU12 with sflash firmware */
 251         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 252         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 253
 254         /* QCA ROME chipset */
 255         { USB_DEVICE(0x0cf3, 0x535b), .driver_info = BTUSB_QCA_ROME },
 256         { USB_DEVICE(0x0cf3, 0xe007), .driver_info = BTUSB_QCA_ROME },
 257         { USB_DEVICE(0x0cf3, 0xe009), .driver_info = BTUSB_QCA_ROME },
 258         { USB_DEVICE(0x0cf3, 0xe010), .driver_info = BTUSB_QCA_ROME },
 259         { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME },
 260         { USB_DEVICE(0x0cf3, 0xe301), .driver_info = BTUSB_QCA_ROME },
 261         { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME },
 262         { USB_DEVICE(0x0489, 0xe092), .driver_info = BTUSB_QCA_ROME },
 263         { USB_DEVICE(0x0489, 0xe09f), .driver_info = BTUSB_QCA_ROME },
 264         { USB_DEVICE(0x0489, 0xe0a2), .driver_info = BTUSB_QCA_ROME },
 265         { USB_DEVICE(0x04ca, 0x3011), .driver_info = BTUSB_QCA_ROME },
 266         { USB_DEVICE(0x04ca, 0x3015), .driver_info = BTUSB_QCA_ROME },
 267         { USB_DEVICE(0x04ca, 0x3016), .driver_info = BTUSB_QCA_ROME },
 268         { USB_DEVICE(0x04ca, 0x301a), .driver_info = BTUSB_QCA_ROME },
 269         { USB_DEVICE(0x13d3, 0x3491), .driver_info = BTUSB_QCA_ROME },
 270         { USB_DEVICE(0x13d3, 0x3496), .driver_info = BTUSB_QCA_ROME },
 271         { USB_DEVICE(0x13d3, 0x3501), .driver_info = BTUSB_QCA_ROME },
 272
 273         /* Broadcom BCM2035 */
 274         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 275         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 276         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 277
 278         /* Broadcom BCM2045 */
 279         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 280         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 281
 282         /* IBM/Lenovo ThinkPad with Broadcom chip */
 283         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 284         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 285
 286         /* HP laptop with Broadcom chip */
 287         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 288
 289         /* Dell laptop with Broadcom chip */
 290         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 291
 292         /* Dell Wireless 370 and 410 devices */
 293         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 294         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 295
 296         /* Belkin F8T012 and F8T013 devices */
 297         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 298         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 299
 300         /* Asus WL-BTD202 device */
 301         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 302
 303         /* Kensington Bluetooth USB adapter */
 304         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 305
 306         /* RTX Telecom based adapters with buggy SCO support */
 307         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 308         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 309
 310         /* CONWISE Technology based adapters with buggy SCO support */
 311         { USB_DEVICE(0x0e5e, 0x6622),
 312           .driver_info = BTUSB_BROKEN_ISOC | BTUSB_CW6622},
 313
 314         /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
 315         { USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE },
 316
 317         /* Digianswer devices */
 318         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 319         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 320
 321         /* CSR BlueCore Bluetooth Sniffer */
 322         { USB_DEVICE(0x0a12, 0x0002),
 323           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 324
 325         /* Frontline ComProbe Bluetooth Sniffer */
 326         { USB_DEVICE(0x16d3, 0x0002),
 327           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 328
 329         /* Marvell Bluetooth devices */
 330         { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
 331         { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
 332         { USB_DEVICE(0x1286, 0x204e), .driver_info = BTUSB_MARVELL },
 333
 334         /* Intel Bluetooth devices */
 335         { USB_DEVICE(0x8087, 0x0025), .driver_info = BTUSB_INTEL_NEW },
 336         { USB_DEVICE(0x8087, 0x0026), .driver_info = BTUSB_INTEL_NEW },
 337         { USB_DEVICE(0x8087, 0x0029), .driver_info = BTUSB_INTEL_NEW },
 338         { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR },
 339         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 340         { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
 341         { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_NEW },
 342         { USB_DEVICE(0x8087, 0x0aa7), .driver_info = BTUSB_INTEL },
 343         { USB_DEVICE(0x8087, 0x0aaa), .driver_info = BTUSB_INTEL_NEW },
 344
 345         /* Other Intel Bluetooth devices */
 346         { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01),
 347           .driver_info = BTUSB_IGNORE },
 348
 349         /* Realtek Bluetooth devices */
 350         { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01),
 351           .driver_info = BTUSB_REALTEK },
 352
 353         /* MediaTek Bluetooth devices */
 354         { USB_VENDOR_AND_INTERFACE_INFO(0x0e8d, 0xe0, 0x01, 0x01),
 355           .driver_info = BTUSB_MEDIATEK },
 356
 357         /* Additional Realtek 8723AE Bluetooth devices */
 358         { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK },
 359         { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK },
 360
 361         /* Additional Realtek 8723BE Bluetooth devices */
 362         { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK },
 363         { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK },
 364         { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
 365         { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
 366         { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },
 367         { USB_DEVICE(0x13d3, 0x3494), .driver_info = BTUSB_REALTEK },
 368
 369         /* Additional Realtek 8723BU Bluetooth devices */
 370         { USB_DEVICE(0x7392, 0xa611), .driver_info = BTUSB_REALTEK },
 371
 372         /* Additional Realtek 8723DE Bluetooth devices */
 373         { USB_DEVICE(0x0bda, 0xb009), .driver_info = BTUSB_REALTEK },
 374         { USB_DEVICE(0x2ff8, 0xb011), .driver_info = BTUSB_REALTEK },
 375
 376         /* Additional Realtek 8821AE Bluetooth devices */
 377         { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
 378         { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },
 379         { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK },
 380         { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK },
 381         { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK },
 382
 383         /* Additional Realtek 8822BE Bluetooth devices */
 384         { USB_DEVICE(0x13d3, 0x3526), .driver_info = BTUSB_REALTEK },
 385         { USB_DEVICE(0x0b05, 0x185c), .driver_info = BTUSB_REALTEK },
 386
 387         /* Silicon Wave based devices */
 388         { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE },
 389
 390         { }     /* Terminating entry */
 391 };
 392
 393 /* The Bluetooth USB module build into some devices needs to be reset on resume,
 394  * this is a problem with the platform (likely shutting off all power) not with
 395  * the module itself. So we use a DMI list to match known broken platforms.
 396  */
 397 static const struct dmi_system_id btusb_needs_reset_resume_table[] = {
 398         {
 399                 /* Dell OptiPlex 3060 (QCA ROME device 0cf3:e007) */
 400                 .matches = {
 401                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 402                         DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 3060"),
 403                 },
 404         },
 405         {
 406                 /* Dell XPS 9360 (QCA ROME device 0cf3:e300) */
 407                 .matches = {
 408                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 409                         DMI_MATCH(DMI_PRODUCT_NAME, "XPS 13 9360"),
 410                 },
 411         },
 412         {
 413                 /* Dell Inspiron 5565 (QCA ROME device 0cf3:e009) */
 414                 .matches = {
 415                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 416                         DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5565"),
 417                 },
 418         },
 419         {}
 420 };
 421
 422 #define BTUSB_MAX_ISOC_FRAMES   10
 423
 424 #define BTUSB_INTR_RUNNING      0
 425 #define BTUSB_BULK_RUNNING      1
 426 #define BTUSB_ISOC_RUNNING      2
 427 #define BTUSB_SUSPENDING        3
 428 #define BTUSB_DID_ISO_RESUME    4
 429 #define BTUSB_BOOTLOADER        5
 430 #define BTUSB_DOWNLOADING       6
 431 #define BTUSB_FIRMWARE_LOADED   7
 432 #define BTUSB_FIRMWARE_FAILED   8
 433 #define BTUSB_BOOTING           9
 434 #define BTUSB_DIAG_RUNNING      10
 435 #define BTUSB_OOB_WAKE_ENABLED  11
 436 #define BTUSB_HW_RESET_ACTIVE   12
 437 #define BTUSB_TX_WAIT_VND_EVT   13
 438
 439 struct btusb_data {
 440         struct hci_dev       *hdev;
 441         struct usb_device    *udev;
 442         struct usb_interface *intf;
 443         struct usb_interface *isoc;
 444         struct usb_interface *diag;
 445         unsigned isoc_ifnum;
 446
 447         unsigned long flags;
 448
 449         struct work_struct work;
 450         struct work_struct waker;
 451
 452         struct usb_anchor deferred;
 453         struct usb_anchor tx_anchor;
 454         int tx_in_flight;
 455         spinlock_t txlock;
 456
 457         struct usb_anchor intr_anchor;
 458         struct usb_anchor bulk_anchor;
 459         struct usb_anchor isoc_anchor;
 460         struct usb_anchor diag_anchor;
 461         struct usb_anchor ctrl_anchor;
 462         spinlock_t rxlock;
 463
 464         struct sk_buff *evt_skb;
 465         struct sk_buff *acl_skb;
 466         struct sk_buff *sco_skb;
 467
 468         struct usb_endpoint_descriptor *intr_ep;
 469         struct usb_endpoint_descriptor *bulk_tx_ep;
 470         struct usb_endpoint_descriptor *bulk_rx_ep;
 471         struct usb_endpoint_descriptor *isoc_tx_ep;
 472         struct usb_endpoint_descriptor *isoc_rx_ep;
 473         struct usb_endpoint_descriptor *diag_tx_ep;
 474         struct usb_endpoint_descriptor *diag_rx_ep;
 475
 476         struct gpio_desc *reset_gpio;
 477
 478         __u8 cmdreq_type;
 479         __u8 cmdreq;
 480
 481         unsigned int sco_num;
 482         int isoc_altsetting;
 483         int suspend_count;
 484
 485         int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
 486         int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
 487
 488         int (*setup_on_usb)(struct hci_dev *hdev);
 489
 490         int oob_wake_irq;   /* irq for out-of-band wake-on-bt */
 491         unsigned cmd_timeout_cnt;
 492 };
 493
 494
 495 static void btusb_intel_cmd_timeout(struct hci_dev *hdev)
 496 {
 497         struct btusb_data *data = hci_get_drvdata(hdev);
 498         struct gpio_desc *reset_gpio = data->reset_gpio;
 499
 500         if (++data->cmd_timeout_cnt < 5)
 501                 return;
 502
 503         if (!reset_gpio) {
 504                 bt_dev_err(hdev, "No way to reset. Ignoring and continuing");
 505                 return;
 506         }
 507
 508         /*
 509          * Toggle the hard reset line if the platform provides one. The reset
 510          * is going to yank the device off the USB and then replug. So doing
 511          * once is enough. The cleanup is handled correctly on the way out
 512          * (standard USB disconnect), and the new device is detected cleanly
 513          * and bound to the driver again like it should be.
 514          */
 515         if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
 516                 bt_dev_err(hdev, "last reset failed? Not resetting again");
 517                 return;
 518         }
 519
 520         bt_dev_err(hdev, "Initiating HW reset via gpio");
 521         gpiod_set_value_cansleep(reset_gpio, 1);
 522         msleep(100);
 523         gpiod_set_value_cansleep(reset_gpio, 0);
 524 }
 525
 526 static inline void btusb_free_frags(struct btusb_data *data)
 527 {
 528         unsigned long flags;
 529
 530         spin_lock_irqsave(&data->rxlock, flags);
 531
 532         kfree_skb(data->evt_skb);
 533         data->evt_skb = NULL;
 534
 535         kfree_skb(data->acl_skb);
 536         data->acl_skb = NULL;
 537
 538         kfree_skb(data->sco_skb);
 539         data->sco_skb = NULL;
 540
 541         spin_unlock_irqrestore(&data->rxlock, flags);
 542 }
 543
 544 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
 545 {
 546         struct sk_buff *skb;
 547         unsigned long flags;
 548         int err = 0;
 549
 550         spin_lock_irqsave(&data->rxlock, flags);
 551         skb = data->evt_skb;
 552
 553         while (count) {
 554                 int len;
 555
 556                 if (!skb) {
 557                         skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
 558                         if (!skb) {
 559                                 err = -ENOMEM;
 560                                 break;
 561                         }
 562
 563                         hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
 564                         hci_skb_expect(skb) = HCI_EVENT_HDR_SIZE;
 565                 }
 566
 567                 len = min_t(uint, hci_skb_expect(skb), count);
 568                 skb_put_data(skb, buffer, len);
 569
 570                 count -= len;
 571                 buffer += len;
 572                 hci_skb_expect(skb) -= len;
 573
 574                 if (skb->len == HCI_EVENT_HDR_SIZE) {
 575                         /* Complete event header */
 576                         hci_skb_expect(skb) = hci_event_hdr(skb)->plen;
 577
 578                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 579                                 kfree_skb(skb);
 580                                 skb = NULL;
 581
 582                                 err = -EILSEQ;
 583                                 break;
 584                         }
 585                 }
 586
 587                 if (!hci_skb_expect(skb)) {
 588                         /* Complete frame */
 589                         data->recv_event(data->hdev, skb);
 590                         skb = NULL;
 591                 }
 592         }
 593
 594         data->evt_skb = skb;
 595         spin_unlock_irqrestore(&data->rxlock, flags);
 596
 597         return err;
 598 }
 599
 600 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
 601 {
 602         struct sk_buff *skb;
 603         unsigned long flags;
 604         int err = 0;
 605
 606         spin_lock_irqsave(&data->rxlock, flags);
 607         skb = data->acl_skb;
 608
 609         while (count) {
 610                 int len;
 611
 612                 if (!skb) {
 613                         skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
 614                         if (!skb) {
 615                                 err = -ENOMEM;
 616                                 break;
 617                         }
 618
 619                         hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT;
 620                         hci_skb_expect(skb) = HCI_ACL_HDR_SIZE;
 621                 }
 622
 623                 len = min_t(uint, hci_skb_expect(skb), count);
 624                 skb_put_data(skb, buffer, len);
 625
 626                 count -= len;
 627                 buffer += len;
 628                 hci_skb_expect(skb) -= len;
 629
 630                 if (skb->len == HCI_ACL_HDR_SIZE) {
 631                         __le16 dlen = hci_acl_hdr(skb)->dlen;
 632
 633                         /* Complete ACL header */
 634                         hci_skb_expect(skb) = __le16_to_cpu(dlen);
 635
 636                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 637                                 kfree_skb(skb);
 638                                 skb = NULL;
 639
 640                                 err = -EILSEQ;
 641                                 break;
 642                         }
 643                 }
 644
 645                 if (!hci_skb_expect(skb)) {
 646                         /* Complete frame */
 647                         hci_recv_frame(data->hdev, skb);
 648                         skb = NULL;
 649                 }
 650         }
 651
 652         data->acl_skb = skb;
 653         spin_unlock_irqrestore(&data->rxlock, flags);
 654
 655         return err;
 656 }
 657
 658 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
 659 {
 660         struct sk_buff *skb;
 661         unsigned long flags;
 662         int err = 0;
 663
 664         spin_lock_irqsave(&data->rxlock, flags);
 665         skb = data->sco_skb;
 666
 667         while (count) {
 668                 int len;
 669
 670                 if (!skb) {
 671                         skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
 672                         if (!skb) {
 673                                 err = -ENOMEM;
 674                                 break;
 675                         }
 676
 677                         hci_skb_pkt_type(skb) = HCI_SCODATA_PKT;
 678                         hci_skb_expect(skb) = HCI_SCO_HDR_SIZE;
 679                 }
 680
 681                 len = min_t(uint, hci_skb_expect(skb), count);
 682                 skb_put_data(skb, buffer, len);
 683
 684                 count -= len;
 685                 buffer += len;
 686                 hci_skb_expect(skb) -= len;
 687
 688                 if (skb->len == HCI_SCO_HDR_SIZE) {
 689                         /* Complete SCO header */
 690                         hci_skb_expect(skb) = hci_sco_hdr(skb)->dlen;
 691
 692                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 693                                 kfree_skb(skb);
 694                                 skb = NULL;
 695
 696                                 err = -EILSEQ;
 697                                 break;
 698                         }
 699                 }
 700
 701                 if (!hci_skb_expect(skb)) {
 702                         /* Complete frame */
 703                         hci_recv_frame(data->hdev, skb);
 704                         skb = NULL;
 705                 }
 706         }
 707
 708         data->sco_skb = skb;
 709         spin_unlock_irqrestore(&data->rxlock, flags);
 710
 711         return err;
 712 }
 713
 714 static void btusb_intr_complete(struct urb *urb)
 715 {
 716         struct hci_dev *hdev = urb->context;
 717         struct btusb_data *data = hci_get_drvdata(hdev);
 718         int err;
 719
 720         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 721                urb->actual_length);
 722
 723         if (!test_bit(HCI_RUNNING, &hdev->flags))
 724                 return;
 725
 726         if (urb->status == 0) {
 727                 hdev->stat.byte_rx += urb->actual_length;
 728
 729                 if (btusb_recv_intr(data, urb->transfer_buffer,
 730                                     urb->actual_length) < 0) {
 731                         bt_dev_err(hdev, "corrupted event packet");
 732                         hdev->stat.err_rx++;
 733                 }
 734         } else if (urb->status == -ENOENT) {
 735                 /* Avoid suspend failed when usb_kill_urb */
 736                 return;
 737         }
 738
 739         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 740                 return;
 741
 742         usb_mark_last_busy(data->udev);
 743         usb_anchor_urb(urb, &data->intr_anchor);
 744
 745         err = usb_submit_urb(urb, GFP_ATOMIC);
 746         if (err < 0) {
 747                 /* -EPERM: urb is being killed;
 748                  * -ENODEV: device got disconnected
 749                  */
 750                 if (err != -EPERM && err != -ENODEV)
 751                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
 752                                    urb, -err);
 753                 usb_unanchor_urb(urb);
 754         }
 755 }
 756
 757 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 758 {
 759         struct btusb_data *data = hci_get_drvdata(hdev);
 760         struct urb *urb;
 761         unsigned char *buf;
 762         unsigned int pipe;
 763         int err, size;
 764
 765         BT_DBG("%s", hdev->name);
 766
 767         if (!data->intr_ep)
 768                 return -ENODEV;
 769
 770         urb = usb_alloc_urb(0, mem_flags);
 771         if (!urb)
 772                 return -ENOMEM;
 773
 774         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 775
 776         buf = kmalloc(size, mem_flags);
 777         if (!buf) {
 778                 usb_free_urb(urb);
 779                 return -ENOMEM;
 780         }
 781
 782         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 783
 784         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 785                          btusb_intr_complete, hdev, data->intr_ep->bInterval);
 786
 787         urb->transfer_flags |= URB_FREE_BUFFER;
 788
 789         usb_anchor_urb(urb, &data->intr_anchor);
 790
 791         err = usb_submit_urb(urb, mem_flags);
 792         if (err < 0) {
 793                 if (err != -EPERM && err != -ENODEV)
 794                         bt_dev_err(hdev, "urb %p submission failed (%d)",
 795                                    urb, -err);
 796                 usb_unanchor_urb(urb);
 797         }
 798
 799         usb_free_urb(urb);
 800
 801         return err;
 802 }
 803
 804 static void btusb_bulk_complete(struct urb *urb)
 805 {
 806         struct hci_dev *hdev = urb->context;
 807         struct btusb_data *data = hci_get_drvdata(hdev);
 808         int err;
 809
 810         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 811                urb->actual_length);
 812
 813         if (!test_bit(HCI_RUNNING, &hdev->flags))
 814                 return;
 815
 816         if (urb->status == 0) {
 817                 hdev->stat.byte_rx += urb->actual_length;
 818
 819                 if (data->recv_bulk(data, urb->transfer_buffer,
 820                                     urb->actual_length) < 0) {
 821                         bt_dev_err(hdev, "corrupted ACL packet");
 822                         hdev->stat.err_rx++;
 823                 }
 824         } else if (urb->status == -ENOENT) {
 825                 /* Avoid suspend failed when usb_kill_urb */
 826                 return;
 827         }
 828
 829         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 830                 return;
 831
 832         usb_anchor_urb(urb, &data->bulk_anchor);
 833         usb_mark_last_busy(data->udev);
 834
 835         err = usb_submit_urb(urb, GFP_ATOMIC);
 836         if (err < 0) {
 837                 /* -EPERM: urb is being killed;
 838                  * -ENODEV: device got disconnected
 839                  */
 840                 if (err != -EPERM && err != -ENODEV)
 841                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
 842                                    urb, -err);
 843                 usb_unanchor_urb(urb);
 844         }
 845 }
 846
 847 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 848 {
 849         struct btusb_data *data = hci_get_drvdata(hdev);
 850         struct urb *urb;
 851         unsigned char *buf;
 852         unsigned int pipe;
 853         int err, size = HCI_MAX_FRAME_SIZE;
 854
 855         BT_DBG("%s", hdev->name);
 856
 857         if (!data->bulk_rx_ep)
 858                 return -ENODEV;
 859
 860         urb = usb_alloc_urb(0, mem_flags);
 861         if (!urb)
 862                 return -ENOMEM;
 863
 864         buf = kmalloc(size, mem_flags);
 865         if (!buf) {
 866                 usb_free_urb(urb);
 867                 return -ENOMEM;
 868         }
 869
 870         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 871
 872         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
 873                           btusb_bulk_complete, hdev);
 874
 875         urb->transfer_flags |= URB_FREE_BUFFER;
 876
 877         usb_mark_last_busy(data->udev);
 878         usb_anchor_urb(urb, &data->bulk_anchor);
 879
 880         err = usb_submit_urb(urb, mem_flags);
 881         if (err < 0) {
 882                 if (err != -EPERM && err != -ENODEV)
 883                         bt_dev_err(hdev, "urb %p submission failed (%d)",
 884                                    urb, -err);
 885                 usb_unanchor_urb(urb);
 886         }
 887
 888         usb_free_urb(urb);
 889
 890         return err;
 891 }
 892
 893 static void btusb_isoc_complete(struct urb *urb)
 894 {
 895         struct hci_dev *hdev = urb->context;
 896         struct btusb_data *data = hci_get_drvdata(hdev);
 897         int i, err;
 898
 899         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 900                urb->actual_length);
 901
 902         if (!test_bit(HCI_RUNNING, &hdev->flags))
 903                 return;
 904
 905         if (urb->status == 0) {
 906                 for (i = 0; i < urb->number_of_packets; i++) {
 907                         unsigned int offset = urb->iso_frame_desc[i].offset;
 908                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 909
 910                         if (urb->iso_frame_desc[i].status)
 911                                 continue;
 912
 913                         hdev->stat.byte_rx += length;
 914
 915                         if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
 916                                             length) < 0) {
 917                                 bt_dev_err(hdev, "corrupted SCO packet");
 918                                 hdev->stat.err_rx++;
 919                         }
 920                 }
 921         } else if (urb->status == -ENOENT) {
 922                 /* Avoid suspend failed when usb_kill_urb */
 923                 return;
 924         }
 925
 926         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 927                 return;
 928
 929         usb_anchor_urb(urb, &data->isoc_anchor);
 930
 931         err = usb_submit_urb(urb, GFP_ATOMIC);
 932         if (err < 0) {
 933                 /* -EPERM: urb is being killed;
 934                  * -ENODEV: device got disconnected
 935                  */
 936                 if (err != -EPERM && err != -ENODEV)
 937                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
 938                                    urb, -err);
 939                 usb_unanchor_urb(urb);
 940         }
 941 }
 942
 943 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 944 {
 945         int i, offset = 0;
 946
 947         BT_DBG("len %d mtu %d", len, mtu);
 948
 949         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 950                                         i++, offset += mtu, len -= mtu) {
 951                 urb->iso_frame_desc[i].offset = offset;
 952                 urb->iso_frame_desc[i].length = mtu;
 953         }
 954
 955         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 956                 urb->iso_frame_desc[i].offset = offset;
 957                 urb->iso_frame_desc[i].length = len;
 958                 i++;
 959         }
 960
 961         urb->number_of_packets = i;
 962 }
 963
 964 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 965 {
 966         struct btusb_data *data = hci_get_drvdata(hdev);
 967         struct urb *urb;
 968         unsigned char *buf;
 969         unsigned int pipe;
 970         int err, size;
 971
 972         BT_DBG("%s", hdev->name);
 973
 974         if (!data->isoc_rx_ep)
 975                 return -ENODEV;
 976
 977         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 978         if (!urb)
 979                 return -ENOMEM;
 980
 981         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 982                                                 BTUSB_MAX_ISOC_FRAMES;
 983
 984         buf = kmalloc(size, mem_flags);
 985         if (!buf) {
 986                 usb_free_urb(urb);
 987                 return -ENOMEM;
 988         }
 989
 990         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 991
 992         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 993                          hdev, data->isoc_rx_ep->bInterval);
 994
 995         urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
 996
 997         __fill_isoc_descriptor(urb, size,
 998                                le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 999
1000         usb_anchor_urb(urb, &data->isoc_anchor);
1001
1002         err = usb_submit_urb(urb, mem_flags);
1003         if (err < 0) {
1004                 if (err != -EPERM && err != -ENODEV)
1005                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1006                                    urb, -err);
1007                 usb_unanchor_urb(urb);
1008         }
1009
1010         usb_free_urb(urb);
1011
1012         return err;
1013 }
1014
1015 static void btusb_diag_complete(struct urb *urb)
1016 {
1017         struct hci_dev *hdev = urb->context;
1018         struct btusb_data *data = hci_get_drvdata(hdev);
1019         int err;
1020
1021         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1022                urb->actual_length);
1023
1024         if (urb->status == 0) {
1025                 struct sk_buff *skb;
1026
1027                 skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC);
1028                 if (skb) {
1029                         skb_put_data(skb, urb->transfer_buffer,
1030                                      urb->actual_length);
1031                         hci_recv_diag(hdev, skb);
1032                 }
1033         } else if (urb->status == -ENOENT) {
1034                 /* Avoid suspend failed when usb_kill_urb */
1035                 return;
1036         }
1037
1038         if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags))
1039                 return;
1040
1041         usb_anchor_urb(urb, &data->diag_anchor);
1042         usb_mark_last_busy(data->udev);
1043
1044         err = usb_submit_urb(urb, GFP_ATOMIC);
1045         if (err < 0) {
1046                 /* -EPERM: urb is being killed;
1047                  * -ENODEV: device got disconnected
1048                  */
1049                 if (err != -EPERM && err != -ENODEV)
1050                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1051                                    urb, -err);
1052                 usb_unanchor_urb(urb);
1053         }
1054 }
1055
1056 static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags)
1057 {
1058         struct btusb_data *data = hci_get_drvdata(hdev);
1059         struct urb *urb;
1060         unsigned char *buf;
1061         unsigned int pipe;
1062         int err, size = HCI_MAX_FRAME_SIZE;
1063
1064         BT_DBG("%s", hdev->name);
1065
1066         if (!data->diag_rx_ep)
1067                 return -ENODEV;
1068
1069         urb = usb_alloc_urb(0, mem_flags);
1070         if (!urb)
1071                 return -ENOMEM;
1072
1073         buf = kmalloc(size, mem_flags);
1074         if (!buf) {
1075                 usb_free_urb(urb);
1076                 return -ENOMEM;
1077         }
1078
1079         pipe = usb_rcvbulkpipe(data->udev, data->diag_rx_ep->bEndpointAddress);
1080
1081         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
1082                           btusb_diag_complete, hdev);
1083
1084         urb->transfer_flags |= URB_FREE_BUFFER;
1085
1086         usb_mark_last_busy(data->udev);
1087         usb_anchor_urb(urb, &data->diag_anchor);
1088
1089         err = usb_submit_urb(urb, mem_flags);
1090         if (err < 0) {
1091                 if (err != -EPERM && err != -ENODEV)
1092                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1093                                    urb, -err);
1094                 usb_unanchor_urb(urb);
1095         }
1096
1097         usb_free_urb(urb);
1098
1099         return err;
1100 }
1101
1102 static void btusb_tx_complete(struct urb *urb)
1103 {
1104         struct sk_buff *skb = urb->context;
1105         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1106         struct btusb_data *data = hci_get_drvdata(hdev);
1107         unsigned long flags;
1108
1109         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1110                urb->actual_length);
1111
1112         if (!test_bit(HCI_RUNNING, &hdev->flags))
1113                 goto done;
1114
1115         if (!urb->status)
1116                 hdev->stat.byte_tx += urb->transfer_buffer_length;
1117         else
1118                 hdev->stat.err_tx++;
1119
1120 done:
1121         spin_lock_irqsave(&data->txlock, flags);
1122         data->tx_in_flight--;
1123         spin_unlock_irqrestore(&data->txlock, flags);
1124
1125         kfree(urb->setup_packet);
1126
1127         kfree_skb(skb);
1128 }
1129
1130 static void btusb_isoc_tx_complete(struct urb *urb)
1131 {
1132         struct sk_buff *skb = urb->context;
1133         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1134
1135         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1136                urb->actual_length);
1137
1138         if (!test_bit(HCI_RUNNING, &hdev->flags))
1139                 goto done;
1140
1141         if (!urb->status)
1142                 hdev->stat.byte_tx += urb->transfer_buffer_length;
1143         else
1144                 hdev->stat.err_tx++;
1145
1146 done:
1147         kfree(urb->setup_packet);
1148
1149         kfree_skb(skb);
1150 }
1151
1152 static int btusb_open(struct hci_dev *hdev)
1153 {
1154         struct btusb_data *data = hci_get_drvdata(hdev);
1155         int err;
1156
1157         BT_DBG("%s", hdev->name);
1158
1159         err = usb_autopm_get_interface(data->intf);
1160         if (err < 0)
1161                 return err;
1162
1163         /* Patching USB firmware files prior to starting any URBs of HCI path
1164          * It is more safe to use USB bulk channel for downloading USB patch
1165          */
1166         if (data->setup_on_usb) {
1167                 err = data->setup_on_usb(hdev);
1168                 if (err < 0)
1169                         return err;
1170         }
1171
1172         data->intf->needs_remote_wakeup = 1;
1173         /* device specific wakeup source enabled and required for USB
1174          * remote wakeup while host is suspended
1175          */
1176         device_wakeup_enable(&data->udev->dev);
1177
1178         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
1179                 goto done;
1180
1181         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
1182         if (err < 0)
1183                 goto failed;
1184
1185         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1186         if (err < 0) {
1187                 usb_kill_anchored_urbs(&data->intr_anchor);
1188                 goto failed;
1189         }
1190
1191         set_bit(BTUSB_BULK_RUNNING, &data->flags);
1192         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1193
1194         if (data->diag) {
1195                 if (!btusb_submit_diag_urb(hdev, GFP_KERNEL))
1196                         set_bit(BTUSB_DIAG_RUNNING, &data->flags);
1197         }
1198
1199 done:
1200         usb_autopm_put_interface(data->intf);
1201         return 0;
1202
1203 failed:
1204         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1205         usb_autopm_put_interface(data->intf);
1206         return err;
1207 }
1208
1209 static void btusb_stop_traffic(struct btusb_data *data)
1210 {
1211         usb_kill_anchored_urbs(&data->intr_anchor);
1212         usb_kill_anchored_urbs(&data->bulk_anchor);
1213         usb_kill_anchored_urbs(&data->isoc_anchor);
1214         usb_kill_anchored_urbs(&data->diag_anchor);
1215         usb_kill_anchored_urbs(&data->ctrl_anchor);
1216 }
1217
1218 static int btusb_close(struct hci_dev *hdev)
1219 {
1220         struct btusb_data *data = hci_get_drvdata(hdev);
1221         int err;
1222
1223         BT_DBG("%s", hdev->name);
1224
1225         cancel_work_sync(&data->work);
1226         cancel_work_sync(&data->waker);
1227
1228         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1229         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1230         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1231         clear_bit(BTUSB_DIAG_RUNNING, &data->flags);
1232
1233         btusb_stop_traffic(data);
1234         btusb_free_frags(data);
1235
1236         err = usb_autopm_get_interface(data->intf);
1237         if (err < 0)
1238                 goto failed;
1239
1240         data->intf->needs_remote_wakeup = 0;
1241         device_wakeup_disable(&data->udev->dev);
1242         usb_autopm_put_interface(data->intf);
1243
1244 failed:
1245         usb_scuttle_anchored_urbs(&data->deferred);
1246         return 0;
1247 }
1248
1249 static int btusb_flush(struct hci_dev *hdev)
1250 {
1251         struct btusb_data *data = hci_get_drvdata(hdev);
1252
1253         BT_DBG("%s", hdev->name);
1254
1255         usb_kill_anchored_urbs(&data->tx_anchor);
1256         btusb_free_frags(data);
1257
1258         return 0;
1259 }
1260
1261 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
1262 {
1263         struct btusb_data *data = hci_get_drvdata(hdev);
1264         struct usb_ctrlrequest *dr;
1265         struct urb *urb;
1266         unsigned int pipe;
1267
1268         urb = usb_alloc_urb(0, GFP_KERNEL);
1269         if (!urb)
1270                 return ERR_PTR(-ENOMEM);
1271
1272         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
1273         if (!dr) {
1274                 usb_free_urb(urb);
1275                 return ERR_PTR(-ENOMEM);
1276         }
1277
1278         dr->bRequestType = data->cmdreq_type;
1279         dr->bRequest     = data->cmdreq;
1280         dr->wIndex       = 0;
1281         dr->wValue       = 0;
1282         dr->wLength      = __cpu_to_le16(skb->len);
1283
1284         pipe = usb_sndctrlpipe(data->udev, 0x00);
1285
1286         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
1287                              skb->data, skb->len, btusb_tx_complete, skb);
1288
1289         skb->dev = (void *)hdev;
1290
1291         return urb;
1292 }
1293
1294 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
1295 {
1296         struct btusb_data *data = hci_get_drvdata(hdev);
1297         struct urb *urb;
1298         unsigned int pipe;
1299
1300         if (!data->bulk_tx_ep)
1301                 return ERR_PTR(-ENODEV);
1302
1303         urb = usb_alloc_urb(0, GFP_KERNEL);
1304         if (!urb)
1305                 return ERR_PTR(-ENOMEM);
1306
1307         pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1308
1309         usb_fill_bulk_urb(urb, data->udev, pipe,
1310                           skb->data, skb->len, btusb_tx_complete, skb);
1311
1312         skb->dev = (void *)hdev;
1313
1314         return urb;
1315 }
1316
1317 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1318 {
1319         struct btusb_data *data = hci_get_drvdata(hdev);
1320         struct urb *urb;
1321         unsigned int pipe;
1322
1323         if (!data->isoc_tx_ep)
1324                 return ERR_PTR(-ENODEV);
1325
1326         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1327         if (!urb)
1328                 return ERR_PTR(-ENOMEM);
1329
1330         pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1331
1332         usb_fill_int_urb(urb, data->udev, pipe,
1333                          skb->data, skb->len, btusb_isoc_tx_complete,
1334                          skb, data->isoc_tx_ep->bInterval);
1335
1336         urb->transfer_flags  = URB_ISO_ASAP;
1337
1338         __fill_isoc_descriptor(urb, skb->len,
1339                                le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1340
1341         skb->dev = (void *)hdev;
1342
1343         return urb;
1344 }
1345
1346 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1347 {
1348         struct btusb_data *data = hci_get_drvdata(hdev);
1349         int err;
1350
1351         usb_anchor_urb(urb, &data->tx_anchor);
1352
1353         err = usb_submit_urb(urb, GFP_KERNEL);
1354         if (err < 0) {
1355                 if (err != -EPERM && err != -ENODEV)
1356                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1357                                    urb, -err);
1358                 kfree(urb->setup_packet);
1359                 usb_unanchor_urb(urb);
1360         } else {
1361                 usb_mark_last_busy(data->udev);
1362         }
1363
1364         usb_free_urb(urb);
1365         return err;
1366 }
1367
1368 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1369 {
1370         struct btusb_data *data = hci_get_drvdata(hdev);
1371         unsigned long flags;
1372         bool suspending;
1373
1374         spin_lock_irqsave(&data->txlock, flags);
1375         suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1376         if (!suspending)
1377                 data->tx_in_flight++;
1378         spin_unlock_irqrestore(&data->txlock, flags);
1379
1380         if (!suspending)
1381                 return submit_tx_urb(hdev, urb);
1382
1383         usb_anchor_urb(urb, &data->deferred);
1384         schedule_work(&data->waker);
1385
1386         usb_free_urb(urb);
1387         return 0;
1388 }
1389
1390 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1391 {
1392         struct urb *urb;
1393
1394         BT_DBG("%s", hdev->name);
1395
1396         switch (hci_skb_pkt_type(skb)) {
1397         case HCI_COMMAND_PKT:
1398                 urb = alloc_ctrl_urb(hdev, skb);
1399                 if (IS_ERR(urb))
1400                         return PTR_ERR(urb);
1401
1402                 hdev->stat.cmd_tx++;
1403                 return submit_or_queue_tx_urb(hdev, urb);
1404
1405         case HCI_ACLDATA_PKT:
1406                 urb = alloc_bulk_urb(hdev, skb);
1407                 if (IS_ERR(urb))
1408                         return PTR_ERR(urb);
1409
1410                 hdev->stat.acl_tx++;
1411                 return submit_or_queue_tx_urb(hdev, urb);
1412
1413         case HCI_SCODATA_PKT:
1414                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1415                         return -ENODEV;
1416
1417                 urb = alloc_isoc_urb(hdev, skb);
1418                 if (IS_ERR(urb))
1419                         return PTR_ERR(urb);
1420
1421                 hdev->stat.sco_tx++;
1422                 return submit_tx_urb(hdev, urb);
1423         }
1424
1425         return -EILSEQ;
1426 }
1427
1428 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1429 {
1430         struct btusb_data *data = hci_get_drvdata(hdev);
1431
1432         BT_DBG("%s evt %d", hdev->name, evt);
1433
1434         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1435                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1436                 schedule_work(&data->work);
1437         }
1438 }
1439
1440 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1441 {
1442         struct btusb_data *data = hci_get_drvdata(hdev);
1443         struct usb_interface *intf = data->isoc;
1444         struct usb_endpoint_descriptor *ep_desc;
1445         int i, err;
1446
1447         if (!data->isoc)
1448                 return -ENODEV;
1449
1450         err = usb_set_interface(data->udev, data->isoc_ifnum, altsetting);
1451         if (err < 0) {
1452                 bt_dev_err(hdev, "setting interface failed (%d)", -err);
1453                 return err;
1454         }
1455
1456         data->isoc_altsetting = altsetting;
1457
1458         data->isoc_tx_ep = NULL;
1459         data->isoc_rx_ep = NULL;
1460
1461         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1462                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1463
1464                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1465                         data->isoc_tx_ep = ep_desc;
1466                         continue;
1467                 }
1468
1469                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1470                         data->isoc_rx_ep = ep_desc;
1471                         continue;
1472                 }
1473         }
1474
1475         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1476                 bt_dev_err(hdev, "invalid SCO descriptors");
1477                 return -ENODEV;
1478         }
1479
1480         return 0;
1481 }
1482
1483 static void btusb_work(struct work_struct *work)
1484 {
1485         struct btusb_data *data = container_of(work, struct btusb_data, work);
1486         struct hci_dev *hdev = data->hdev;
1487         int new_alts;
1488         int err;
1489
1490         if (data->sco_num > 0) {
1491                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1492                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1493                         if (err < 0) {
1494                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1495                                 usb_kill_anchored_urbs(&data->isoc_anchor);
1496                                 return;
1497                         }
1498
1499                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1500                 }
1501
1502                 if (hdev->voice_setting & 0x0020) {
1503                         static const int alts[3] = { 2, 4, 5 };
1504
1505                         new_alts = alts[data->sco_num - 1];
1506                 } else {
1507                         new_alts = data->sco_num;
1508                 }
1509
1510                 if (data->isoc_altsetting != new_alts) {
1511                         unsigned long flags;
1512
1513                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1514                         usb_kill_anchored_urbs(&data->isoc_anchor);
1515
1516                         /* When isochronous alternate setting needs to be
1517                          * changed, because SCO connection has been added
1518                          * or removed, a packet fragment may be left in the
1519                          * reassembling state. This could lead to wrongly
1520                          * assembled fragments.
1521                          *
1522                          * Clear outstanding fragment when selecting a new
1523                          * alternate setting.
1524                          */
1525                         spin_lock_irqsave(&data->rxlock, flags);
1526                         kfree_skb(data->sco_skb);
1527                         data->sco_skb = NULL;
1528                         spin_unlock_irqrestore(&data->rxlock, flags);
1529
1530                         if (__set_isoc_interface(hdev, new_alts) < 0)
1531                                 return;
1532                 }
1533
1534                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1535                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1536                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1537                         else
1538                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1539                 }
1540         } else {
1541                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1542                 usb_kill_anchored_urbs(&data->isoc_anchor);
1543
1544                 __set_isoc_interface(hdev, 0);
1545                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1546                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1547         }
1548 }
1549
1550 static void btusb_waker(struct work_struct *work)
1551 {
1552         struct btusb_data *data = container_of(work, struct btusb_data, waker);
1553         int err;
1554
1555         err = usb_autopm_get_interface(data->intf);
1556         if (err < 0)
1557                 return;
1558
1559         usb_autopm_put_interface(data->intf);
1560 }
1561
1562 static int btusb_setup_bcm92035(struct hci_dev *hdev)
1563 {
1564         struct sk_buff *skb;
1565         u8 val = 0x00;
1566
1567         BT_DBG("%s", hdev->name);
1568
1569         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1570         if (IS_ERR(skb))
1571                 bt_dev_err(hdev, "BCM92035 command failed (%ld)", PTR_ERR(skb));
1572         else
1573                 kfree_skb(skb);
1574
1575         return 0;
1576 }
1577
1578 static int btusb_setup_csr(struct hci_dev *hdev)
1579 {
1580         struct hci_rp_read_local_version *rp;
1581         struct sk_buff *skb;
1582
1583         BT_DBG("%s", hdev->name);
1584
1585         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1586                              HCI_INIT_TIMEOUT);
1587         if (IS_ERR(skb)) {
1588                 int err = PTR_ERR(skb);
1589                 bt_dev_err(hdev, "CSR: Local version failed (%d)", err);
1590                 return err;
1591         }
1592
1593         if (skb->len != sizeof(struct hci_rp_read_local_version)) {
1594                 bt_dev_err(hdev, "CSR: Local version length mismatch");
1595                 kfree_skb(skb);
1596                 return -EIO;
1597         }
1598
1599         rp = (struct hci_rp_read_local_version *)skb->data;
1600
1601         /* Detect controllers which aren't real CSR ones. */
1602         if (le16_to_cpu(rp->manufacturer) != 10 ||
1603             le16_to_cpu(rp->lmp_subver) == 0x0c5c) {
1604                 /* Clear the reset quirk since this is not an actual
1605                  * early Bluetooth 1.1 device from CSR.
1606                  */
1607                 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1608
1609                 /* These fake CSR controllers have all a broken
1610                  * stored link key handling and so just disable it.
1611                  */
1612                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
1613         }
1614
1615         kfree_skb(skb);
1616
1617         return 0;
1618 }
1619
1620 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1621                                                        struct intel_version *ver)
1622 {
1623         const struct firmware *fw;
1624         char fwname[64];
1625         int ret;
1626
1627         snprintf(fwname, sizeof(fwname),
1628                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1629                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
1630                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1631                  ver->fw_build_ww, ver->fw_build_yy);
1632
1633         ret = request_firmware(&fw, fwname, &hdev->dev);
1634         if (ret < 0) {
1635                 if (ret == -EINVAL) {
1636                         bt_dev_err(hdev, "Intel firmware file request failed (%d)",
1637                                    ret);
1638                         return NULL;
1639                 }
1640
1641                 bt_dev_err(hdev, "failed to open Intel firmware file: %s (%d)",
1642                            fwname, ret);
1643
1644                 /* If the correct firmware patch file is not found, use the
1645                  * default firmware patch file instead
1646                  */
1647                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1648                          ver->hw_platform, ver->hw_variant);
1649                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1650                         bt_dev_err(hdev, "failed to open default fw file: %s",
1651                                    fwname);
1652                         return NULL;
1653                 }
1654         }
1655
1656         bt_dev_info(hdev, "Intel Bluetooth firmware file: %s", fwname);
1657
1658         return fw;
1659 }
1660
1661 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1662                                       const struct firmware *fw,
1663                                       const u8 **fw_ptr, int *disable_patch)
1664 {
1665         struct sk_buff *skb;
1666         struct hci_command_hdr *cmd;
1667         const u8 *cmd_param;
1668         struct hci_event_hdr *evt = NULL;
1669         const u8 *evt_param = NULL;
1670         int remain = fw->size - (*fw_ptr - fw->data);
1671
1672         /* The first byte indicates the types of the patch command or event.
1673          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1674          * in the current firmware buffer doesn't start with 0x01 or
1675          * the size of remain buffer is smaller than HCI command header,
1676          * the firmware file is corrupted and it should stop the patching
1677          * process.
1678          */
1679         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1680                 bt_dev_err(hdev, "Intel fw corrupted: invalid cmd read");
1681                 return -EINVAL;
1682         }
1683         (*fw_ptr)++;
1684         remain--;
1685
1686         cmd = (struct hci_command_hdr *)(*fw_ptr);
1687         *fw_ptr += sizeof(*cmd);
1688         remain -= sizeof(*cmd);
1689
1690         /* Ensure that the remain firmware data is long enough than the length
1691          * of command parameter. If not, the firmware file is corrupted.
1692          */
1693         if (remain < cmd->plen) {
1694                 bt_dev_err(hdev, "Intel fw corrupted: invalid cmd len");
1695                 return -EFAULT;
1696         }
1697
1698         /* If there is a command that loads a patch in the firmware
1699          * file, then enable the patch upon success, otherwise just
1700          * disable the manufacturer mode, for example patch activation
1701          * is not required when the default firmware patch file is used
1702          * because there are no patch data to load.
1703          */
1704         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1705                 *disable_patch = 0;
1706
1707         cmd_param = *fw_ptr;
1708         *fw_ptr += cmd->plen;
1709         remain -= cmd->plen;
1710
1711         /* This reads the expected events when the above command is sent to the
1712          * device. Some vendor commands expects more than one events, for
1713          * example command status event followed by vendor specific event.
1714          * For this case, it only keeps the last expected event. so the command
1715          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1716          * last expected event.
1717          */
1718         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1719                 (*fw_ptr)++;
1720                 remain--;
1721
1722                 evt = (struct hci_event_hdr *)(*fw_ptr);
1723                 *fw_ptr += sizeof(*evt);
1724                 remain -= sizeof(*evt);
1725
1726                 if (remain < evt->plen) {
1727                         bt_dev_err(hdev, "Intel fw corrupted: invalid evt len");
1728                         return -EFAULT;
1729                 }
1730
1731                 evt_param = *fw_ptr;
1732                 *fw_ptr += evt->plen;
1733                 remain -= evt->plen;
1734         }
1735
1736         /* Every HCI commands in the firmware file has its correspond event.
1737          * If event is not found or remain is smaller than zero, the firmware
1738          * file is corrupted.
1739          */
1740         if (!evt || !evt_param || remain < 0) {
1741                 bt_dev_err(hdev, "Intel fw corrupted: invalid evt read");
1742                 return -EFAULT;
1743         }
1744
1745         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1746                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1747         if (IS_ERR(skb)) {
1748                 bt_dev_err(hdev, "sending Intel patch command (0x%4.4x) failed (%ld)",
1749                            cmd->opcode, PTR_ERR(skb));
1750                 return PTR_ERR(skb);
1751         }
1752
1753         /* It ensures that the returned event matches the event data read from
1754          * the firmware file. At fist, it checks the length and then
1755          * the contents of the event.
1756          */
1757         if (skb->len != evt->plen) {
1758                 bt_dev_err(hdev, "mismatch event length (opcode 0x%4.4x)",
1759                            le16_to_cpu(cmd->opcode));
1760                 kfree_skb(skb);
1761                 return -EFAULT;
1762         }
1763
1764         if (memcmp(skb->data, evt_param, evt->plen)) {
1765                 bt_dev_err(hdev, "mismatch event parameter (opcode 0x%4.4x)",
1766                            le16_to_cpu(cmd->opcode));
1767                 kfree_skb(skb);
1768                 return -EFAULT;
1769         }
1770         kfree_skb(skb);
1771
1772         return 0;
1773 }
1774
1775 static int btusb_setup_intel(struct hci_dev *hdev)
1776 {
1777         struct sk_buff *skb;
1778         const struct firmware *fw;
1779         const u8 *fw_ptr;
1780         int disable_patch, err;
1781         struct intel_version ver;
1782
1783         BT_DBG("%s", hdev->name);
1784
1785         /* The controller has a bug with the first HCI command sent to it
1786          * returning number of completed commands as zero. This would stall the
1787          * command processing in the Bluetooth core.
1788          *
1789          * As a workaround, send HCI Reset command first which will reset the
1790          * number of completed commands and allow normal command processing
1791          * from now on.
1792          */
1793         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1794         if (IS_ERR(skb)) {
1795                 bt_dev_err(hdev, "sending initial HCI reset command failed (%ld)",
1796                            PTR_ERR(skb));
1797                 return PTR_ERR(skb);
1798         }
1799         kfree_skb(skb);
1800
1801         /* Read Intel specific controller version first to allow selection of
1802          * which firmware file to load.
1803          *
1804          * The returned information are hardware variant and revision plus
1805          * firmware variant, revision and build number.
1806          */
1807         err = btintel_read_version(hdev, &ver);
1808         if (err)
1809                 return err;
1810
1811         bt_dev_info(hdev, "read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1812                     ver.hw_platform, ver.hw_variant, ver.hw_revision,
1813                     ver.fw_variant,  ver.fw_revision, ver.fw_build_num,
1814                     ver.fw_build_ww, ver.fw_build_yy, ver.fw_patch_num);
1815
1816         /* fw_patch_num indicates the version of patch the device currently
1817          * have. If there is no patch data in the device, it is always 0x00.
1818          * So, if it is other than 0x00, no need to patch the device again.
1819          */
1820         if (ver.fw_patch_num) {
1821                 bt_dev_info(hdev, "Intel device is already patched. "
1822                             "patch num: %02x", ver.fw_patch_num);
1823                 goto complete;
1824         }
1825
1826         /* Opens the firmware patch file based on the firmware version read
1827          * from the controller. If it fails to open the matching firmware
1828          * patch file, it tries to open the default firmware patch file.
1829          * If no patch file is found, allow the device to operate without
1830          * a patch.
1831          */
1832         fw = btusb_setup_intel_get_fw(hdev, &ver);
1833         if (!fw)
1834                 goto complete;
1835         fw_ptr = fw->data;
1836
1837         /* Enable the manufacturer mode of the controller.
1838          * Only while this mode is enabled, the driver can download the
1839          * firmware patch data and configuration parameters.
1840          */
1841         err = btintel_enter_mfg(hdev);
1842         if (err) {
1843                 release_firmware(fw);
1844                 return err;
1845         }
1846
1847         disable_patch = 1;
1848
1849         /* The firmware data file consists of list of Intel specific HCI
1850          * commands and its expected events. The first byte indicates the
1851          * type of the message, either HCI command or HCI event.
1852          *
1853          * It reads the command and its expected event from the firmware file,
1854          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1855          * the returned event is compared with the event read from the firmware
1856          * file and it will continue until all the messages are downloaded to
1857          * the controller.
1858          *
1859          * Once the firmware patching is completed successfully,
1860          * the manufacturer mode is disabled with reset and activating the
1861          * downloaded patch.
1862          *
1863          * If the firmware patching fails, the manufacturer mode is
1864          * disabled with reset and deactivating the patch.
1865          *
1866          * If the default patch file is used, no reset is done when disabling
1867          * the manufacturer.
1868          */
1869         while (fw->size > fw_ptr - fw->data) {
1870                 int ret;
1871
1872                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1873                                                  &disable_patch);
1874                 if (ret < 0)
1875                         goto exit_mfg_deactivate;
1876         }
1877
1878         release_firmware(fw);
1879
1880         if (disable_patch)
1881                 goto exit_mfg_disable;
1882
1883         /* Patching completed successfully and disable the manufacturer mode
1884          * with reset and activate the downloaded firmware patches.
1885          */
1886         err = btintel_exit_mfg(hdev, true, true);
1887         if (err)
1888                 return err;
1889
1890         bt_dev_info(hdev, "Intel firmware patch completed and activated");
1891
1892         goto complete;
1893
1894 exit_mfg_disable:
1895         /* Disable the manufacturer mode without reset */
1896         err = btintel_exit_mfg(hdev, false, false);
1897         if (err)
1898                 return err;
1899
1900         bt_dev_info(hdev, "Intel firmware patch completed");
1901
1902         goto complete;
1903
1904 exit_mfg_deactivate:
1905         release_firmware(fw);
1906
1907         /* Patching failed. Disable the manufacturer mode with reset and
1908          * deactivate the downloaded firmware patches.
1909          */
1910         err = btintel_exit_mfg(hdev, true, false);
1911         if (err)
1912                 return err;
1913
1914         bt_dev_info(hdev, "Intel firmware patch completed and deactivated");
1915
1916 complete:
1917         /* Set the event mask for Intel specific vendor events. This enables
1918          * a few extra events that are useful during general operation.
1919          */
1920         btintel_set_event_mask_mfg(hdev, false);
1921
1922         btintel_check_bdaddr(hdev);
1923         return 0;
1924 }
1925
1926 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
1927 {
1928         struct sk_buff *skb;
1929         struct hci_event_hdr *hdr;
1930         struct hci_ev_cmd_complete *evt;
1931
1932         skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_KERNEL);
1933         if (!skb)
1934                 return -ENOMEM;
1935
1936         hdr = skb_put(skb, sizeof(*hdr));
1937         hdr->evt = HCI_EV_CMD_COMPLETE;
1938         hdr->plen = sizeof(*evt) + 1;
1939
1940         evt = skb_put(skb, sizeof(*evt));
1941         evt->ncmd = 0x01;
1942         evt->opcode = cpu_to_le16(opcode);
1943
1944         skb_put_u8(skb, 0x00);
1945
1946         hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
1947
1948         return hci_recv_frame(hdev, skb);
1949 }
1950
1951 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
1952                                  int count)
1953 {
1954         /* When the device is in bootloader mode, then it can send
1955          * events via the bulk endpoint. These events are treated the
1956          * same way as the ones received from the interrupt endpoint.
1957          */
1958         if (test_bit(BTUSB_BOOTLOADER, &data->flags))
1959                 return btusb_recv_intr(data, buffer, count);
1960
1961         return btusb_recv_bulk(data, buffer, count);
1962 }
1963
1964 static void btusb_intel_bootup(struct btusb_data *data, const void *ptr,
1965                                unsigned int len)
1966 {
1967         const struct intel_bootup *evt = ptr;
1968
1969         if (len != sizeof(*evt))
1970                 return;
1971
1972         if (test_and_clear_bit(BTUSB_BOOTING, &data->flags))
1973                 wake_up_bit(&data->flags, BTUSB_BOOTING);
1974 }
1975
1976 static void btusb_intel_secure_send_result(struct btusb_data *data,
1977                                            const void *ptr, unsigned int len)
1978 {
1979         const struct intel_secure_send_result *evt = ptr;
1980
1981         if (len != sizeof(*evt))
1982                 return;
1983
1984         if (evt->result)
1985                 set_bit(BTUSB_FIRMWARE_FAILED, &data->flags);
1986
1987         if (test_and_clear_bit(BTUSB_DOWNLOADING, &data->flags) &&
1988             test_bit(BTUSB_FIRMWARE_LOADED, &data->flags))
1989                 wake_up_bit(&data->flags, BTUSB_DOWNLOADING);
1990 }
1991
1992 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
1993 {
1994         struct btusb_data *data = hci_get_drvdata(hdev);
1995
1996         if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1997                 struct hci_event_hdr *hdr = (void *)skb->data;
1998
1999                 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
2000                     hdr->plen > 0) {
2001                         const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
2002                         unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
2003
2004                         switch (skb->data[2]) {
2005                         case 0x02:
2006                                 /* When switching to the operational firmware
2007                                  * the device sends a vendor specific event
2008                                  * indicating that the bootup completed.
2009                                  */
2010                                 btusb_intel_bootup(data, ptr, len);
2011                                 break;
2012                         case 0x06:
2013                                 /* When the firmware loading completes the
2014                                  * device sends out a vendor specific event
2015                                  * indicating the result of the firmware
2016                                  * loading.
2017                                  */
2018                                 btusb_intel_secure_send_result(data, ptr, len);
2019                                 break;
2020                         }
2021                 }
2022         }
2023
2024         return hci_recv_frame(hdev, skb);
2025 }
2026
2027 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
2028 {
2029         struct btusb_data *data = hci_get_drvdata(hdev);
2030         struct urb *urb;
2031
2032         BT_DBG("%s", hdev->name);
2033
2034         switch (hci_skb_pkt_type(skb)) {
2035         case HCI_COMMAND_PKT:
2036                 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
2037                         struct hci_command_hdr *cmd = (void *)skb->data;
2038                         __u16 opcode = le16_to_cpu(cmd->opcode);
2039
2040                         /* When in bootloader mode and the command 0xfc09
2041                          * is received, it needs to be send down the
2042                          * bulk endpoint. So allocate a bulk URB instead.
2043                          */
2044                         if (opcode == 0xfc09)
2045                                 urb = alloc_bulk_urb(hdev, skb);
2046                         else
2047                                 urb = alloc_ctrl_urb(hdev, skb);
2048
2049                         /* When the 0xfc01 command is issued to boot into
2050                          * the operational firmware, it will actually not
2051                          * send a command complete event. To keep the flow
2052                          * control working inject that event here.
2053                          */
2054                         if (opcode == 0xfc01)
2055                                 inject_cmd_complete(hdev, opcode);
2056                 } else {
2057                         urb = alloc_ctrl_urb(hdev, skb);
2058                 }
2059                 if (IS_ERR(urb))
2060                         return PTR_ERR(urb);
2061
2062                 hdev->stat.cmd_tx++;
2063                 return submit_or_queue_tx_urb(hdev, urb);
2064
2065         case HCI_ACLDATA_PKT:
2066                 urb = alloc_bulk_urb(hdev, skb);
2067                 if (IS_ERR(urb))
2068                         return PTR_ERR(urb);
2069
2070                 hdev->stat.acl_tx++;
2071                 return submit_or_queue_tx_urb(hdev, urb);
2072
2073         case HCI_SCODATA_PKT:
2074                 if (hci_conn_num(hdev, SCO_LINK) < 1)
2075                         return -ENODEV;
2076
2077                 urb = alloc_isoc_urb(hdev, skb);
2078                 if (IS_ERR(urb))
2079                         return PTR_ERR(urb);
2080
2081                 hdev->stat.sco_tx++;
2082                 return submit_tx_urb(hdev, urb);
2083         }
2084
2085         return -EILSEQ;
2086 }
2087
2088 static bool btusb_setup_intel_new_get_fw_name(struct intel_version *ver,
2089                                              struct intel_boot_params *params,
2090                                              char *fw_name, size_t len,
2091                                              const char *suffix)
2092 {
2093         switch (ver->hw_variant) {
2094         case 0x0b:      /* SfP */
2095         case 0x0c:      /* WsP */
2096                 snprintf(fw_name, len, "intel/ibt-%u-%u.%s",
2097                         le16_to_cpu(ver->hw_variant),
2098                         le16_to_cpu(params->dev_revid),
2099                         suffix);
2100                 break;
2101         case 0x11:      /* JfP */
2102         case 0x12:      /* ThP */
2103         case 0x13:      /* HrP */
2104         case 0x14:      /* CcP */
2105                 snprintf(fw_name, len, "intel/ibt-%u-%u-%u.%s",
2106                         le16_to_cpu(ver->hw_variant),
2107                         le16_to_cpu(ver->hw_revision),
2108                         le16_to_cpu(ver->fw_revision),
2109                         suffix);
2110                 break;
2111         default:
2112                 return false;
2113         }
2114         return true;
2115 }
2116
2117 static int btusb_setup_intel_new(struct hci_dev *hdev)
2118 {
2119         struct btusb_data *data = hci_get_drvdata(hdev);
2120         struct intel_version ver;
2121         struct intel_boot_params params;
2122         const struct firmware *fw;
2123         u32 boot_param;
2124         char fwname[64];
2125         ktime_t calltime, delta, rettime;
2126         unsigned long long duration;
2127         int err;
2128
2129         BT_DBG("%s", hdev->name);
2130
2131         /* Set the default boot parameter to 0x0 and it is updated to
2132          * SKU specific boot parameter after reading Intel_Write_Boot_Params
2133          * command while downloading the firmware.
2134          */
2135         boot_param = 0x00000000;
2136
2137         calltime = ktime_get();
2138
2139         /* Read the Intel version information to determine if the device
2140          * is in bootloader mode or if it already has operational firmware
2141          * loaded.
2142          */
2143         err = btintel_read_version(hdev, &ver);
2144         if (err)
2145                 return err;
2146
2147         /* The hardware platform number has a fixed value of 0x37 and
2148          * for now only accept this single value.
2149          */
2150         if (ver.hw_platform != 0x37) {
2151                 bt_dev_err(hdev, "Unsupported Intel hardware platform (%u)",
2152                            ver.hw_platform);
2153                 return -EINVAL;
2154         }
2155
2156         /* Check for supported iBT hardware variants of this firmware
2157          * loading method.
2158          *
2159          * This check has been put in place to ensure correct forward
2160          * compatibility options when newer hardware variants come along.
2161          */
2162         switch (ver.hw_variant) {
2163         case 0x0b:      /* SfP */
2164         case 0x0c:      /* WsP */
2165         case 0x11:      /* JfP */
2166         case 0x12:      /* ThP */
2167         case 0x13:      /* HrP */
2168         case 0x14:      /* CcP */
2169                 break;
2170         default:
2171                 bt_dev_err(hdev, "Unsupported Intel hardware variant (%u)",
2172                            ver.hw_variant);
2173                 return -EINVAL;
2174         }
2175
2176         btintel_version_info(hdev, &ver);
2177
2178         /* The firmware variant determines if the device is in bootloader
2179          * mode or is running operational firmware. The value 0x06 identifies
2180          * the bootloader and the value 0x23 identifies the operational
2181          * firmware.
2182          *
2183          * When the operational firmware is already present, then only
2184          * the check for valid Bluetooth device address is needed. This
2185          * determines if the device will be added as configured or
2186          * unconfigured controller.
2187          *
2188          * It is not possible to use the Secure Boot Parameters in this
2189          * case since that command is only available in bootloader mode.
2190          */
2191         if (ver.fw_variant == 0x23) {
2192                 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2193                 btintel_check_bdaddr(hdev);
2194                 return 0;
2195         }
2196
2197         /* If the device is not in bootloader mode, then the only possible
2198          * choice is to return an error and abort the device initialization.
2199          */
2200         if (ver.fw_variant != 0x06) {
2201                 bt_dev_err(hdev, "Unsupported Intel firmware variant (%u)",
2202                            ver.fw_variant);
2203                 return -ENODEV;
2204         }
2205
2206         /* Read the secure boot parameters to identify the operating
2207          * details of the bootloader.
2208          */
2209         err = btintel_read_boot_params(hdev, &params);
2210         if (err)
2211                 return err;
2212
2213         /* It is required that every single firmware fragment is acknowledged
2214          * with a command complete event. If the boot parameters indicate
2215          * that this bootloader does not send them, then abort the setup.
2216          */
2217         if (params.limited_cce != 0x00) {
2218                 bt_dev_err(hdev, "Unsupported Intel firmware loading method (%u)",
2219                            params.limited_cce);
2220                 return -EINVAL;
2221         }
2222
2223         /* If the OTP has no valid Bluetooth device address, then there will
2224          * also be no valid address for the operational firmware.
2225          */
2226         if (!bacmp(&params.otp_bdaddr, BDADDR_ANY)) {
2227                 bt_dev_info(hdev, "No device address configured");
2228                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2229         }
2230
2231         /* With this Intel bootloader only the hardware variant and device
2232          * revision information are used to select the right firmware for SfP
2233          * and WsP.
2234          *
2235          * The firmware filename is ibt-<hw_variant>-<dev_revid>.sfi.
2236          *
2237          * Currently the supported hardware variants are:
2238          *   11 (0x0b) for iBT3.0 (LnP/SfP)
2239          *   12 (0x0c) for iBT3.5 (WsP)
2240          *
2241          * For ThP/JfP and for future SKU's, the FW name varies based on HW
2242          * variant, HW revision and FW revision, as these are dependent on CNVi
2243          * and RF Combination.
2244          *
2245          *   17 (0x11) for iBT3.5 (JfP)
2246          *   18 (0x12) for iBT3.5 (ThP)
2247          *
2248          * The firmware file name for these will be
2249          * ibt-<hw_variant>-<hw_revision>-<fw_revision>.sfi.
2250          *
2251          */
2252         err = btusb_setup_intel_new_get_fw_name(&ver, &params, fwname,
2253                                                 sizeof(fwname), "sfi");
2254         if (!err) {
2255                 bt_dev_err(hdev, "Unsupported Intel firmware naming");
2256                 return -EINVAL;
2257         }
2258
2259         err = request_firmware(&fw, fwname, &hdev->dev);
2260         if (err < 0) {
2261                 bt_dev_err(hdev, "Failed to load Intel firmware file (%d)", err);
2262                 return err;
2263         }
2264
2265         bt_dev_info(hdev, "Found device firmware: %s", fwname);
2266
2267         /* Save the DDC file name for later use to apply once the firmware
2268          * downloading is done.
2269          */
2270         err = btusb_setup_intel_new_get_fw_name(&ver, &params, fwname,
2271                                                 sizeof(fwname), "ddc");
2272         if (!err) {
2273                 bt_dev_err(hdev, "Unsupported Intel firmware naming");
2274                 return -EINVAL;
2275         }
2276
2277         if (fw->size < 644) {
2278                 bt_dev_err(hdev, "Invalid size of firmware file (%zu)",
2279                            fw->size);
2280                 err = -EBADF;
2281                 goto done;
2282         }
2283
2284         set_bit(BTUSB_DOWNLOADING, &data->flags);
2285
2286         /* Start firmware downloading and get boot parameter */
2287         err = btintel_download_firmware(hdev, fw, &boot_param);
2288         if (err < 0)
2289                 goto done;
2290
2291         set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2292
2293         bt_dev_info(hdev, "Waiting for firmware download to complete");
2294
2295         /* Before switching the device into operational mode and with that
2296          * booting the loaded firmware, wait for the bootloader notification
2297          * that all fragments have been successfully received.
2298          *
2299          * When the event processing receives the notification, then the
2300          * BTUSB_DOWNLOADING flag will be cleared.
2301          *
2302          * The firmware loading should not take longer than 5 seconds
2303          * and thus just timeout if that happens and fail the setup
2304          * of this device.
2305          */
2306         err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
2307                                   TASK_INTERRUPTIBLE,
2308                                   msecs_to_jiffies(5000));
2309         if (err == -EINTR) {
2310                 bt_dev_err(hdev, "Firmware loading interrupted");
2311                 goto done;
2312         }
2313
2314         if (err) {
2315                 bt_dev_err(hdev, "Firmware loading timeout");
2316                 err = -ETIMEDOUT;
2317                 goto done;
2318         }
2319
2320         if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) {
2321                 bt_dev_err(hdev, "Firmware loading failed");
2322                 err = -ENOEXEC;
2323                 goto done;
2324         }
2325
2326         rettime = ktime_get();
2327         delta = ktime_sub(rettime, calltime);
2328         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2329
2330         bt_dev_info(hdev, "Firmware loaded in %llu usecs", duration);
2331
2332 done:
2333         release_firmware(fw);
2334
2335         if (err < 0)
2336                 return err;
2337
2338         calltime = ktime_get();
2339
2340         set_bit(BTUSB_BOOTING, &data->flags);
2341
2342         err = btintel_send_intel_reset(hdev, boot_param);
2343         if (err)
2344                 return err;
2345
2346         /* The bootloader will not indicate when the device is ready. This
2347          * is done by the operational firmware sending bootup notification.
2348          *
2349          * Booting into operational firmware should not take longer than
2350          * 1 second. However if that happens, then just fail the setup
2351          * since something went wrong.
2352          */
2353         bt_dev_info(hdev, "Waiting for device to boot");
2354
2355         err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING,
2356                                   TASK_INTERRUPTIBLE,
2357                                   msecs_to_jiffies(1000));
2358
2359         if (err == -EINTR) {
2360                 bt_dev_err(hdev, "Device boot interrupted");
2361                 return -EINTR;
2362         }
2363
2364         if (err) {
2365                 bt_dev_err(hdev, "Device boot timeout");
2366                 return -ETIMEDOUT;
2367         }
2368
2369         rettime = ktime_get();
2370         delta = ktime_sub(rettime, calltime);
2371         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2372
2373         bt_dev_info(hdev, "Device booted in %llu usecs", duration);
2374
2375         clear_bit(BTUSB_BOOTLOADER, &data->flags);
2376
2377         /* Once the device is running in operational mode, it needs to apply
2378          * the device configuration (DDC) parameters.
2379          *
2380          * The device can work without DDC parameters, so even if it fails
2381          * to load the file, no need to fail the setup.
2382          */
2383         btintel_load_ddc_config(hdev, fwname);
2384
2385         /* Set the event mask for Intel specific vendor events. This enables
2386          * a few extra events that are useful during general operation. It
2387          * does not enable any debugging related events.
2388          *
2389          * The device will function correctly without these events enabled
2390          * and thus no need to fail the setup.
2391          */
2392         btintel_set_event_mask(hdev, false);
2393
2394         return 0;
2395 }
2396
2397 static int btusb_shutdown_intel(struct hci_dev *hdev)
2398 {
2399         struct sk_buff *skb;
2400         long ret;
2401
2402         /* In the shutdown sequence where Bluetooth is turned off followed
2403          * by WiFi being turned off, turning WiFi back on causes issue with
2404          * the RF calibration.
2405          *
2406          * To ensure that any RF activity has been stopped, issue HCI Reset
2407          * command to clear all ongoing activity including advertising,
2408          * scanning etc.
2409          */
2410         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2411         if (IS_ERR(skb)) {
2412                 ret = PTR_ERR(skb);
2413                 bt_dev_err(hdev, "HCI reset during shutdown failed");
2414                 return ret;
2415         }
2416         kfree_skb(skb);
2417
2418         /* Some platforms have an issue with BT LED when the interface is
2419          * down or BT radio is turned off, which takes 5 seconds to BT LED
2420          * goes off. This command turns off the BT LED immediately.
2421          */
2422         skb = __hci_cmd_sync(hdev, 0xfc3f, 0, NULL, HCI_INIT_TIMEOUT);
2423         if (IS_ERR(skb)) {
2424                 ret = PTR_ERR(skb);
2425                 bt_dev_err(hdev, "turning off Intel device LED failed");
2426                 return ret;
2427         }
2428         kfree_skb(skb);
2429
2430         return 0;
2431 }
2432
2433 static int btusb_shutdown_intel_new(struct hci_dev *hdev)
2434 {
2435         struct sk_buff *skb;
2436
2437         /* Send HCI Reset to the controller to stop any BT activity which
2438          * were triggered. This will help to save power and maintain the
2439          * sync b/w Host and controller
2440          */
2441         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2442         if (IS_ERR(skb)) {
2443                 bt_dev_err(hdev, "HCI reset during shutdown failed");
2444                 return PTR_ERR(skb);
2445         }
2446         kfree_skb(skb);
2447
2448         return 0;
2449 }
2450
2451 #ifdef CONFIG_BT_HCIBTUSB_MTK
2452
2453 #define FIRMWARE_MT7663         "mediatek/mt7663pr2h.bin"
2454 #define FIRMWARE_MT7668         "mediatek/mt7668pr2h.bin"
2455
2456 #define HCI_WMT_MAX_EVENT_SIZE          64
2457
2458 enum {
2459         BTMTK_WMT_PATCH_DWNLD = 0x1,
2460         BTMTK_WMT_FUNC_CTRL = 0x6,
2461         BTMTK_WMT_RST = 0x7,
2462         BTMTK_WMT_SEMAPHORE = 0x17,
2463 };
2464
2465 enum {
2466         BTMTK_WMT_INVALID,
2467         BTMTK_WMT_PATCH_UNDONE,
2468         BTMTK_WMT_PATCH_DONE,
2469         BTMTK_WMT_ON_UNDONE,
2470         BTMTK_WMT_ON_DONE,
2471         BTMTK_WMT_ON_PROGRESS,
2472 };
2473
2474 struct btmtk_wmt_hdr {
2475         u8      dir;
2476         u8      op;
2477         __le16  dlen;
2478         u8      flag;
2479 } __packed;
2480
2481 struct btmtk_hci_wmt_cmd {
2482         struct btmtk_wmt_hdr hdr;
2483         u8 data[256];
2484 } __packed;
2485
2486 struct btmtk_hci_wmt_evt {
2487         struct hci_event_hdr hhdr;
2488         struct btmtk_wmt_hdr whdr;
2489 } __packed;
2490
2491 struct btmtk_hci_wmt_evt_funcc {
2492         struct btmtk_hci_wmt_evt hwhdr;
2493         __be16 status;
2494 } __packed;
2495
2496 struct btmtk_tci_sleep {
2497         u8 mode;
2498         __le16 duration;
2499         __le16 host_duration;
2500         u8 host_wakeup_pin;
2501         u8 time_compensation;
2502 } __packed;
2503
2504 struct btmtk_hci_wmt_params {
2505         u8 op;
2506         u8 flag;
2507         u16 dlen;
2508         const void *data;
2509         u32 *status;
2510 };
2511
2512 static void btusb_mtk_wmt_recv(struct urb *urb)
2513 {
2514         struct hci_dev *hdev = urb->context;
2515         struct btusb_data *data = hci_get_drvdata(hdev);
2516         struct hci_event_hdr *hdr;
2517         struct sk_buff *skb;
2518         int err;
2519
2520         if (urb->status == 0 && urb->actual_length > 0) {
2521                 hdev->stat.byte_rx += urb->actual_length;
2522
2523                 /* WMT event shouldn't be fragmented and the size should be
2524                  * less than HCI_WMT_MAX_EVENT_SIZE.
2525                  */
2526                 skb = bt_skb_alloc(HCI_WMT_MAX_EVENT_SIZE, GFP_ATOMIC);
2527                 if (!skb) {
2528                         hdev->stat.err_rx++;
2529                         goto err_out;
2530                 }
2531
2532                 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
2533                 skb_put_data(skb, urb->transfer_buffer, urb->actual_length);
2534
2535                 hdr = (void *)skb->data;
2536                 /* Fix up the vendor event id with 0xff for vendor specific
2537                  * instead of 0xe4 so that event send via monitoring socket can
2538                  * be parsed properly.
2539                  */
2540                 hdr->evt = 0xff;
2541
2542                 /* When someone waits for the WMT event, the skb is being cloned
2543                  * and being processed the events from there then.
2544                  */
2545                 if (test_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags)) {
2546                         data->evt_skb = skb_clone(skb, GFP_KERNEL);
2547                         if (!data->evt_skb)
2548                                 goto err_out;
2549                 }
2550
2551                 err = hci_recv_frame(hdev, skb);
2552                 if (err < 0)
2553                         goto err_free_skb;
2554
2555                 if (test_and_clear_bit(BTUSB_TX_WAIT_VND_EVT,
2556                                        &data->flags)) {
2557                         /* Barrier to sync with other CPUs */
2558                         smp_mb__after_atomic();
2559                         wake_up_bit(&data->flags,
2560                                     BTUSB_TX_WAIT_VND_EVT);
2561                 }
2562 err_out:
2563                 return;
2564 err_free_skb:
2565                 kfree_skb(data->evt_skb);
2566                 data->evt_skb = NULL;
2567                 return;
2568         } else if (urb->status == -ENOENT) {
2569                 /* Avoid suspend failed when usb_kill_urb */
2570                 return;
2571         }
2572
2573         usb_mark_last_busy(data->udev);
2574
2575         /* The URB complete handler is still called with urb->actual_length = 0
2576          * when the event is not available, so we should keep re-submitting
2577          * URB until WMT event returns, Also, It's necessary to wait some time
2578          * between the two consecutive control URBs to relax the target device
2579          * to generate the event. Otherwise, the WMT event cannot return from
2580          * the device successfully.
2581          */
2582         udelay(100);
2583
2584         usb_anchor_urb(urb, &data->ctrl_anchor);
2585         err = usb_submit_urb(urb, GFP_ATOMIC);
2586         if (err < 0) {
2587                 /* -EPERM: urb is being killed;
2588                  * -ENODEV: device got disconnected
2589                  */
2590                 if (err != -EPERM && err != -ENODEV)
2591                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
2592                                    urb, -err);
2593                 usb_unanchor_urb(urb);
2594         }
2595 }
2596
2597 static int btusb_mtk_submit_wmt_recv_urb(struct hci_dev *hdev)
2598 {
2599         struct btusb_data *data = hci_get_drvdata(hdev);
2600         struct usb_ctrlrequest *dr;
2601         unsigned char *buf;
2602         int err, size = 64;
2603         unsigned int pipe;
2604         struct urb *urb;
2605
2606         urb = usb_alloc_urb(0, GFP_KERNEL);
2607         if (!urb)
2608                 return -ENOMEM;
2609
2610         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
2611         if (!dr) {
2612                 usb_free_urb(urb);
2613                 return -ENOMEM;
2614         }
2615
2616         dr->bRequestType = USB_TYPE_VENDOR | USB_DIR_IN;
2617         dr->bRequest     = 1;
2618         dr->wIndex       = cpu_to_le16(0);
2619         dr->wValue       = cpu_to_le16(48);
2620         dr->wLength      = cpu_to_le16(size);
2621
2622         buf = kmalloc(size, GFP_KERNEL);
2623         if (!buf) {
2624                 kfree(dr);
2625                 return -ENOMEM;
2626         }
2627
2628         pipe = usb_rcvctrlpipe(data->udev, 0);
2629
2630         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
2631                              buf, size, btusb_mtk_wmt_recv, hdev);
2632
2633         urb->transfer_flags |= URB_FREE_BUFFER;
2634
2635         usb_anchor_urb(urb, &data->ctrl_anchor);
2636         err = usb_submit_urb(urb, GFP_KERNEL);
2637         if (err < 0) {
2638                 if (err != -EPERM && err != -ENODEV)
2639                         bt_dev_err(hdev, "urb %p submission failed (%d)",
2640                                    urb, -err);
2641                 usb_unanchor_urb(urb);
2642         }
2643
2644         usb_free_urb(urb);
2645
2646         return err;
2647 }
2648
2649 static int btusb_mtk_hci_wmt_sync(struct hci_dev *hdev,
2650                                   struct btmtk_hci_wmt_params *wmt_params)
2651 {
2652         struct btusb_data *data = hci_get_drvdata(hdev);
2653         struct btmtk_hci_wmt_evt_funcc *wmt_evt_funcc;
2654         u32 hlen, status = BTMTK_WMT_INVALID;
2655         struct btmtk_hci_wmt_evt *wmt_evt;
2656         struct btmtk_hci_wmt_cmd wc;
2657         struct btmtk_wmt_hdr *hdr;
2658         int err;
2659
2660         /* Submit control IN URB on demand to process the WMT event */
2661         err = btusb_mtk_submit_wmt_recv_urb(hdev);
2662         if (err < 0)
2663                 return err;
2664
2665         /* Send the WMT command and wait until the WMT event returns */
2666         hlen = sizeof(*hdr) + wmt_params->dlen;
2667         if (hlen > 255)
2668                 return -EINVAL;
2669
2670         hdr = (struct btmtk_wmt_hdr *)&wc;
2671         hdr->dir = 1;
2672         hdr->op = wmt_params->op;
2673         hdr->dlen = cpu_to_le16(wmt_params->dlen + 1);
2674         hdr->flag = wmt_params->flag;
2675         memcpy(wc.data, wmt_params->data, wmt_params->dlen);
2676
2677         set_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2678
2679         err = __hci_cmd_send(hdev, 0xfc6f, hlen, &wc);
2680
2681         if (err < 0) {
2682                 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2683                 return err;
2684         }
2685
2686         /* The vendor specific WMT commands are all answered by a vendor
2687          * specific event and will have the Command Status or Command
2688          * Complete as with usual HCI command flow control.
2689          *
2690          * After sending the command, wait for BTUSB_TX_WAIT_VND_EVT
2691          * state to be cleared. The driver specific event receive routine
2692          * will clear that state and with that indicate completion of the
2693          * WMT command.
2694          */
2695         err = wait_on_bit_timeout(&data->flags, BTUSB_TX_WAIT_VND_EVT,
2696                                   TASK_INTERRUPTIBLE, HCI_INIT_TIMEOUT);
2697         if (err == -EINTR) {
2698                 bt_dev_err(hdev, "Execution of wmt command interrupted");
2699                 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2700                 return err;
2701         }
2702
2703         if (err) {
2704                 bt_dev_err(hdev, "Execution of wmt command timed out");
2705                 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2706                 return -ETIMEDOUT;
2707         }
2708
2709         /* Parse and handle the return WMT event */
2710         wmt_evt = (struct btmtk_hci_wmt_evt *)data->evt_skb->data;
2711         if (wmt_evt->whdr.op != hdr->op) {
2712                 bt_dev_err(hdev, "Wrong op received %d expected %d",
2713                            wmt_evt->whdr.op, hdr->op);
2714                 err = -EIO;
2715                 goto err_free_skb;
2716         }
2717
2718         switch (wmt_evt->whdr.op) {
2719         case BTMTK_WMT_SEMAPHORE:
2720                 if (wmt_evt->whdr.flag == 2)
2721                         status = BTMTK_WMT_PATCH_UNDONE;
2722                 else
2723                         status = BTMTK_WMT_PATCH_DONE;
2724                 break;
2725         case BTMTK_WMT_FUNC_CTRL:
2726                 wmt_evt_funcc = (struct btmtk_hci_wmt_evt_funcc *)wmt_evt;
2727                 if (be16_to_cpu(wmt_evt_funcc->status) == 0x404)
2728                         status = BTMTK_WMT_ON_DONE;
2729                 else if (be16_to_cpu(wmt_evt_funcc->status) == 0x420)
2730                         status = BTMTK_WMT_ON_PROGRESS;
2731                 else
2732                         status = BTMTK_WMT_ON_UNDONE;
2733                 break;
2734         }
2735
2736         if (wmt_params->status)
2737                 *wmt_params->status = status;
2738
2739 err_free_skb:
2740         kfree_skb(data->evt_skb);
2741         data->evt_skb = NULL;
2742
2743         return err;
2744 }
2745
2746 static int btusb_mtk_setup_firmware(struct hci_dev *hdev, const char *fwname)
2747 {
2748         struct btmtk_hci_wmt_params wmt_params;
2749         const struct firmware *fw;
2750         const u8 *fw_ptr;
2751         size_t fw_size;
2752         int err, dlen;
2753         u8 flag;
2754
2755         err = request_firmware(&fw, fwname, &hdev->dev);
2756         if (err < 0) {
2757                 bt_dev_err(hdev, "Failed to load firmware file (%d)", err);
2758                 return err;
2759         }
2760
2761         fw_ptr = fw->data;
2762         fw_size = fw->size;
2763
2764         /* The size of patch header is 30 bytes, should be skip */
2765         if (fw_size < 30) {
2766                 err = -EINVAL;
2767                 goto err_release_fw;
2768         }
2769
2770         fw_size -= 30;
2771         fw_ptr += 30;
2772         flag = 1;
2773
2774         wmt_params.op = BTMTK_WMT_PATCH_DWNLD;
2775         wmt_params.status = NULL;
2776
2777         while (fw_size > 0) {
2778                 dlen = min_t(int, 250, fw_size);
2779
2780                 /* Tell deivice the position in sequence */
2781                 if (fw_size - dlen <= 0)
2782                         flag = 3;
2783                 else if (fw_size < fw->size - 30)
2784                         flag = 2;
2785
2786                 wmt_params.flag = flag;
2787                 wmt_params.dlen = dlen;
2788                 wmt_params.data = fw_ptr;
2789
2790                 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2791                 if (err < 0) {
2792                         bt_dev_err(hdev, "Failed to send wmt patch dwnld (%d)",
2793                                    err);
2794                         goto err_release_fw;
2795                 }
2796
2797                 fw_size -= dlen;
2798                 fw_ptr += dlen;
2799         }
2800
2801         wmt_params.op = BTMTK_WMT_RST;
2802         wmt_params.flag = 4;
2803         wmt_params.dlen = 0;
2804         wmt_params.data = NULL;
2805         wmt_params.status = NULL;
2806
2807         /* Activate funciton the firmware providing to */
2808         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2809         if (err < 0) {
2810                 bt_dev_err(hdev, "Failed to send wmt rst (%d)", err);
2811                 return err;
2812         }
2813
2814         /* Wait a few moments for firmware activation done */
2815         usleep_range(10000, 12000);
2816
2817 err_release_fw:
2818         release_firmware(fw);
2819
2820         return err;
2821 }
2822
2823 static int btusb_mtk_func_query(struct hci_dev *hdev)
2824 {
2825         struct btmtk_hci_wmt_params wmt_params;
2826         int status, err;
2827         u8 param = 0;
2828
2829         /* Query whether the function is enabled */
2830         wmt_params.op = BTMTK_WMT_FUNC_CTRL;
2831         wmt_params.flag = 4;
2832         wmt_params.dlen = sizeof(param);
2833         wmt_params.data = &param;
2834         wmt_params.status = &status;
2835
2836         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2837         if (err < 0) {
2838                 bt_dev_err(hdev, "Failed to query function status (%d)", err);
2839                 return err;
2840         }
2841
2842         return status;
2843 }
2844
2845 static int btusb_mtk_reg_read(struct btusb_data *data, u32 reg, u32 *val)
2846 {
2847         int pipe, err, size = sizeof(u32);
2848         void *buf;
2849
2850         buf = kzalloc(size, GFP_KERNEL);
2851         if (!buf)
2852                 return -ENOMEM;
2853
2854         pipe = usb_rcvctrlpipe(data->udev, 0);
2855         err = usb_control_msg(data->udev, pipe, 0x63,
2856                               USB_TYPE_VENDOR | USB_DIR_IN,
2857                               reg >> 16, reg & 0xffff,
2858                               buf, size, USB_CTRL_SET_TIMEOUT);
2859         if (err < 0)
2860                 goto err_free_buf;
2861
2862         *val = get_unaligned_le32(buf);
2863
2864 err_free_buf:
2865         kfree(buf);
2866
2867         return err;
2868 }
2869
2870 static int btusb_mtk_id_get(struct btusb_data *data, u32 *id)
2871 {
2872         return btusb_mtk_reg_read(data, 0x80000008, id);
2873 }
2874
2875 static int btusb_mtk_setup(struct hci_dev *hdev)
2876 {
2877         struct btusb_data *data = hci_get_drvdata(hdev);
2878         struct btmtk_hci_wmt_params wmt_params;
2879         ktime_t calltime, delta, rettime;
2880         struct btmtk_tci_sleep tci_sleep;
2881         unsigned long long duration;
2882         struct sk_buff *skb;
2883         const char *fwname;
2884         int err, status;
2885         u32 dev_id;
2886         u8 param;
2887
2888         calltime = ktime_get();
2889
2890         err = btusb_mtk_id_get(data, &dev_id);
2891         if (err < 0) {
2892                 bt_dev_err(hdev, "Failed to get device id (%d)", err);
2893                 return err;
2894         }
2895
2896         switch (dev_id) {
2897         case 0x7663:
2898                 fwname = FIRMWARE_MT7663;
2899                 break;
2900         case 0x7668:
2901                 fwname = FIRMWARE_MT7668;
2902                 break;
2903         default:
2904                 bt_dev_err(hdev, "Unsupported support hardware variant (%08x)",
2905                            dev_id);
2906                 return -ENODEV;
2907         }
2908
2909         /* Query whether the firmware is already download */
2910         wmt_params.op = BTMTK_WMT_SEMAPHORE;
2911         wmt_params.flag = 1;
2912         wmt_params.dlen = 0;
2913         wmt_params.data = NULL;
2914         wmt_params.status = &status;
2915
2916         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2917         if (err < 0) {
2918                 bt_dev_err(hdev, "Failed to query firmware status (%d)", err);
2919                 return err;
2920         }
2921
2922         if (status == BTMTK_WMT_PATCH_DONE) {
2923                 bt_dev_info(hdev, "firmware already downloaded");
2924                 goto ignore_setup_fw;
2925         }
2926
2927         /* Setup a firmware which the device definitely requires */
2928         err = btusb_mtk_setup_firmware(hdev, fwname);
2929         if (err < 0)
2930                 return err;
2931
2932 ignore_setup_fw:
2933         err = readx_poll_timeout(btusb_mtk_func_query, hdev, status,
2934                                  status < 0 || status != BTMTK_WMT_ON_PROGRESS,
2935                                  2000, 5000000);
2936         /* -ETIMEDOUT happens */
2937         if (err < 0)
2938                 return err;
2939
2940         /* The other errors happen in btusb_mtk_func_query */
2941         if (status < 0)
2942                 return status;
2943
2944         if (status == BTMTK_WMT_ON_DONE) {
2945                 bt_dev_info(hdev, "function already on");
2946                 goto ignore_func_on;
2947         }
2948
2949         /* Enable Bluetooth protocol */
2950         param = 1;
2951         wmt_params.op = BTMTK_WMT_FUNC_CTRL;
2952         wmt_params.flag = 0;
2953         wmt_params.dlen = sizeof(param);
2954         wmt_params.data = &param;
2955         wmt_params.status = NULL;
2956
2957         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2958         if (err < 0) {
2959                 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
2960                 return err;
2961         }
2962
2963 ignore_func_on:
2964         /* Apply the low power environment setup */
2965         tci_sleep.mode = 0x5;
2966         tci_sleep.duration = cpu_to_le16(0x640);
2967         tci_sleep.host_duration = cpu_to_le16(0x640);
2968         tci_sleep.host_wakeup_pin = 0;
2969         tci_sleep.time_compensation = 0;
2970
2971         skb = __hci_cmd_sync(hdev, 0xfc7a, sizeof(tci_sleep), &tci_sleep,
2972                              HCI_INIT_TIMEOUT);
2973         if (IS_ERR(skb)) {
2974                 err = PTR_ERR(skb);
2975                 bt_dev_err(hdev, "Failed to apply low power setting (%d)", err);
2976                 return err;
2977         }
2978         kfree_skb(skb);
2979
2980         rettime = ktime_get();
2981         delta = ktime_sub(rettime, calltime);
2982         duration = (unsigned long long)ktime_to_ns(delta) >> 10;
2983
2984         bt_dev_info(hdev, "Device setup in %llu usecs", duration);
2985
2986         return 0;
2987 }
2988
2989 static int btusb_mtk_shutdown(struct hci_dev *hdev)
2990 {
2991         struct btmtk_hci_wmt_params wmt_params;
2992         u8 param = 0;
2993         int err;
2994
2995         /* Disable the device */
2996         wmt_params.op = BTMTK_WMT_FUNC_CTRL;
2997         wmt_params.flag = 0;
2998         wmt_params.dlen = sizeof(param);
2999         wmt_params.data = &param;
3000         wmt_params.status = NULL;
3001
3002         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3003         if (err < 0) {
3004                 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
3005                 return err;
3006         }
3007
3008         return 0;
3009 }
3010
3011 MODULE_FIRMWARE(FIRMWARE_MT7663);
3012 MODULE_FIRMWARE(FIRMWARE_MT7668);
3013 #endif
3014
3015 #ifdef CONFIG_PM
3016 /* Configure an out-of-band gpio as wake-up pin, if specified in device tree */
3017 static int marvell_config_oob_wake(struct hci_dev *hdev)
3018 {
3019         struct sk_buff *skb;
3020         struct btusb_data *data = hci_get_drvdata(hdev);
3021         struct device *dev = &data->udev->dev;
3022         u16 pin, gap, opcode;
3023         int ret;
3024         u8 cmd[5];
3025
3026         /* Move on if no wakeup pin specified */
3027         if (of_property_read_u16(dev->of_node, "marvell,wakeup-pin", &pin) ||
3028             of_property_read_u16(dev->of_node, "marvell,wakeup-gap-ms", &gap))
3029                 return 0;
3030
3031         /* Vendor specific command to configure a GPIO as wake-up pin */
3032         opcode = hci_opcode_pack(0x3F, 0x59);
3033         cmd[0] = opcode & 0xFF;
3034         cmd[1] = opcode >> 8;
3035         cmd[2] = 2; /* length of parameters that follow */
3036         cmd[3] = pin;
3037         cmd[4] = gap; /* time in ms, for which wakeup pin should be asserted */
3038
3039         skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
3040         if (!skb) {
3041                 bt_dev_err(hdev, "%s: No memory\n", __func__);
3042                 return -ENOMEM;
3043         }
3044
3045         skb_put_data(skb, cmd, sizeof(cmd));
3046         hci_skb_pkt_type(skb) = HCI_COMMAND_PKT;
3047
3048         ret = btusb_send_frame(hdev, skb);
3049         if (ret) {
3050                 bt_dev_err(hdev, "%s: configuration failed\n", __func__);
3051                 kfree_skb(skb);
3052                 return ret;
3053         }
3054
3055         return 0;
3056 }
3057 #endif
3058
3059 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
3060                                     const bdaddr_t *bdaddr)
3061 {
3062         struct sk_buff *skb;
3063         u8 buf[8];
3064         long ret;
3065
3066         buf[0] = 0xfe;
3067         buf[1] = sizeof(bdaddr_t);
3068         memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
3069
3070         skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
3071         if (IS_ERR(skb)) {
3072                 ret = PTR_ERR(skb);
3073                 bt_dev_err(hdev, "changing Marvell device address failed (%ld)",
3074                            ret);
3075                 return ret;
3076         }
3077         kfree_skb(skb);
3078
3079         return 0;
3080 }
3081
3082 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
3083                                     const bdaddr_t *bdaddr)
3084 {
3085         struct sk_buff *skb;
3086         u8 buf[10];
3087         long ret;
3088
3089         buf[0] = 0x01;
3090         buf[1] = 0x01;
3091         buf[2] = 0x00;
3092         buf[3] = sizeof(bdaddr_t);
3093         memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
3094
3095         skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
3096         if (IS_ERR(skb)) {
3097                 ret = PTR_ERR(skb);
3098                 bt_dev_err(hdev, "Change address command failed (%ld)", ret);
3099                 return ret;
3100         }
3101         kfree_skb(skb);
3102
3103         return 0;
3104 }
3105
3106 #define QCA_DFU_PACKET_LEN      4096
3107
3108 #define QCA_GET_TARGET_VERSION  0x09
3109 #define QCA_CHECK_STATUS        0x05
3110 #define QCA_DFU_DOWNLOAD        0x01
3111
3112 #define QCA_SYSCFG_UPDATED      0x40
3113 #define QCA_PATCH_UPDATED       0x80
3114 #define QCA_DFU_TIMEOUT         3000
3115
3116 struct qca_version {
3117         __le32  rom_version;
3118         __le32  patch_version;
3119         __le32  ram_version;
3120         __le32  ref_clock;
3121         __u8    reserved[4];
3122 } __packed;
3123
3124 struct qca_rampatch_version {
3125         __le16  rom_version;
3126         __le16  patch_version;
3127 } __packed;
3128
3129 struct qca_device_info {
3130         u32     rom_version;
3131         u8      rampatch_hdr;   /* length of header in rampatch */
3132         u8      nvm_hdr;        /* length of header in NVM */
3133         u8      ver_offset;     /* offset of version structure in rampatch */
3134 };
3135
3136 static const struct qca_device_info qca_devices_table[] = {
3137         { 0x00000100, 20, 4, 10 }, /* Rome 1.0 */
3138         { 0x00000101, 20, 4, 10 }, /* Rome 1.1 */
3139         { 0x00000200, 28, 4, 18 }, /* Rome 2.0 */
3140         { 0x00000201, 28, 4, 18 }, /* Rome 2.1 */
3141         { 0x00000300, 28, 4, 18 }, /* Rome 3.0 */
3142         { 0x00000302, 28, 4, 18 }, /* Rome 3.2 */
3143 };
3144
3145 static int btusb_qca_send_vendor_req(struct usb_device *udev, u8 request,
3146                                      void *data, u16 size)
3147 {
3148         int pipe, err;
3149         u8 *buf;
3150
3151         buf = kmalloc(size, GFP_KERNEL);
3152         if (!buf)
3153                 return -ENOMEM;
3154
3155         /* Found some of USB hosts have IOT issues with ours so that we should
3156          * not wait until HCI layer is ready.
3157          */
3158         pipe = usb_rcvctrlpipe(udev, 0);
3159         err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
3160                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
3161         if (err < 0) {
3162                 dev_err(&udev->dev, "Failed to access otp area (%d)", err);
3163                 goto done;
3164         }
3165
3166         memcpy(data, buf, size);
3167
3168 done:
3169         kfree(buf);
3170
3171         return err;
3172 }
3173
3174 static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
3175                                        const struct firmware *firmware,
3176                                        size_t hdr_size)
3177 {
3178         struct btusb_data *btdata = hci_get_drvdata(hdev);
3179         struct usb_device *udev = btdata->udev;
3180         size_t count, size, sent = 0;
3181         int pipe, len, err;
3182         u8 *buf;
3183
3184         buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
3185         if (!buf)
3186                 return -ENOMEM;
3187
3188         count = firmware->size;
3189
3190         size = min_t(size_t, count, hdr_size);
3191         memcpy(buf, firmware->data, size);
3192
3193         /* USB patches should go down to controller through USB path
3194          * because binary format fits to go down through USB channel.
3195          * USB control path is for patching headers and USB bulk is for
3196          * patch body.
3197          */
3198         pipe = usb_sndctrlpipe(udev, 0);
3199         err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
3200                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
3201         if (err < 0) {
3202                 bt_dev_err(hdev, "Failed to send headers (%d)", err);
3203                 goto done;
3204         }
3205
3206         sent += size;
3207         count -= size;
3208
3209         while (count) {
3210                 size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
3211
3212                 memcpy(buf, firmware->data + sent, size);
3213
3214                 pipe = usb_sndbulkpipe(udev, 0x02);
3215                 err = usb_bulk_msg(udev, pipe, buf, size, &len,
3216                                    QCA_DFU_TIMEOUT);
3217                 if (err < 0) {
3218                         bt_dev_err(hdev, "Failed to send body at %zd of %zd (%d)",
3219                                    sent, firmware->size, err);
3220                         break;
3221                 }
3222
3223                 if (size != len) {
3224                         bt_dev_err(hdev, "Failed to get bulk buffer");
3225                         err = -EILSEQ;
3226                         break;
3227                 }
3228
3229                 sent  += size;
3230                 count -= size;
3231         }
3232
3233 done:
3234         kfree(buf);
3235         return err;
3236 }
3237
3238 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
3239                                          struct qca_version *ver,
3240                                          const struct qca_device_info *info)
3241 {
3242         struct qca_rampatch_version *rver;
3243         const struct firmware *fw;
3244         u32 ver_rom, ver_patch;
3245         u16 rver_rom, rver_patch;
3246         char fwname[64];
3247         int err;
3248
3249         ver_rom = le32_to_cpu(ver->rom_version);
3250         ver_patch = le32_to_cpu(ver->patch_version);
3251
3252         snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom);
3253
3254         err = request_firmware(&fw, fwname, &hdev->dev);
3255         if (err) {
3256                 bt_dev_err(hdev, "failed to request rampatch file: %s (%d)",
3257                            fwname, err);
3258                 return err;
3259         }
3260
3261         bt_dev_info(hdev, "using rampatch file: %s", fwname);
3262
3263         rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
3264         rver_rom = le16_to_cpu(rver->rom_version);
3265         rver_patch = le16_to_cpu(rver->patch_version);
3266
3267         bt_dev_info(hdev, "QCA: patch rome 0x%x build 0x%x, "
3268                     "firmware rome 0x%x build 0x%x",
3269                     rver_rom, rver_patch, ver_rom, ver_patch);
3270
3271         if (rver_rom != ver_rom || rver_patch <= ver_patch) {
3272                 bt_dev_err(hdev, "rampatch file version did not match with firmware");
3273                 err = -EINVAL;
3274                 goto done;
3275         }
3276
3277         err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
3278
3279 done:
3280         release_firmware(fw);
3281
3282         return err;
3283 }
3284
3285 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
3286                                     struct qca_version *ver,
3287                                     const struct qca_device_info *info)
3288 {
3289         const struct firmware *fw;
3290         char fwname[64];
3291         int err;
3292
3293         snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x.bin",
3294                  le32_to_cpu(ver->rom_version));
3295
3296         err = request_firmware(&fw, fwname, &hdev->dev);
3297         if (err) {
3298                 bt_dev_err(hdev, "failed to request NVM file: %s (%d)",
3299                            fwname, err);
3300                 return err;
3301         }
3302
3303         bt_dev_info(hdev, "using NVM file: %s", fwname);
3304
3305         err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
3306
3307         release_firmware(fw);
3308
3309         return err;
3310 }
3311
3312 /* identify the ROM version and check whether patches are needed */
3313 static bool btusb_qca_need_patch(struct usb_device *udev)
3314 {
3315         struct qca_version ver;
3316
3317         if (btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3318                                       sizeof(ver)) < 0)
3319                 return false;
3320         /* only low ROM versions need patches */
3321         return !(le32_to_cpu(ver.rom_version) & ~0xffffU);
3322 }
3323
3324 static int btusb_setup_qca(struct hci_dev *hdev)
3325 {
3326         struct btusb_data *btdata = hci_get_drvdata(hdev);
3327         struct usb_device *udev = btdata->udev;
3328         const struct qca_device_info *info = NULL;
3329         struct qca_version ver;
3330         u32 ver_rom;
3331         u8 status;
3332         int i, err;
3333
3334         err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3335                                         sizeof(ver));
3336         if (err < 0)
3337                 return err;
3338
3339         ver_rom = le32_to_cpu(ver.rom_version);
3340         /* Don't care about high ROM versions */
3341         if (ver_rom & ~0xffffU)
3342                 return 0;
3343
3344         for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
3345                 if (ver_rom == qca_devices_table[i].rom_version)
3346                         info = &qca_devices_table[i];
3347         }
3348         if (!info) {
3349                 bt_dev_err(hdev, "don't support firmware rome 0x%x", ver_rom);
3350                 return -ENODEV;
3351         }
3352
3353         err = btusb_qca_send_vendor_req(udev, QCA_CHECK_STATUS, &status,
3354                                         sizeof(status));
3355         if (err < 0)
3356                 return err;
3357
3358         if (!(status & QCA_PATCH_UPDATED)) {
3359                 err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
3360                 if (err < 0)
3361                         return err;
3362         }
3363
3364         if (!(status & QCA_SYSCFG_UPDATED)) {
3365                 err = btusb_setup_qca_load_nvm(hdev, &ver, info);
3366                 if (err < 0)
3367                         return err;
3368         }
3369
3370         return 0;
3371 }
3372
3373 #ifdef CONFIG_BT_HCIBTUSB_BCM
3374 static inline int __set_diag_interface(struct hci_dev *hdev)
3375 {
3376         struct btusb_data *data = hci_get_drvdata(hdev);
3377         struct usb_interface *intf = data->diag;
3378         int i;
3379
3380         if (!data->diag)
3381                 return -ENODEV;
3382
3383         data->diag_tx_ep = NULL;
3384         data->diag_rx_ep = NULL;
3385
3386         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
3387                 struct usb_endpoint_descriptor *ep_desc;
3388
3389                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
3390
3391                 if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
3392                         data->diag_tx_ep = ep_desc;
3393                         continue;
3394                 }
3395
3396                 if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
3397                         data->diag_rx_ep = ep_desc;
3398                         continue;
3399                 }
3400         }
3401
3402         if (!data->diag_tx_ep || !data->diag_rx_ep) {
3403                 bt_dev_err(hdev, "invalid diagnostic descriptors");
3404                 return -ENODEV;
3405         }
3406
3407         return 0;
3408 }
3409
3410 static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable)
3411 {
3412         struct btusb_data *data = hci_get_drvdata(hdev);
3413         struct sk_buff *skb;
3414         struct urb *urb;
3415         unsigned int pipe;
3416
3417         if (!data->diag_tx_ep)
3418                 return ERR_PTR(-ENODEV);
3419
3420         urb = usb_alloc_urb(0, GFP_KERNEL);
3421         if (!urb)
3422                 return ERR_PTR(-ENOMEM);
3423
3424         skb = bt_skb_alloc(2, GFP_KERNEL);
3425         if (!skb) {
3426                 usb_free_urb(urb);
3427                 return ERR_PTR(-ENOMEM);
3428         }
3429
3430         skb_put_u8(skb, 0xf0);
3431         skb_put_u8(skb, enable);
3432
3433         pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress);
3434
3435         usb_fill_bulk_urb(urb, data->udev, pipe,
3436                           skb->data, skb->len, btusb_tx_complete, skb);
3437
3438         skb->dev = (void *)hdev;
3439
3440         return urb;
3441 }
3442
3443 static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable)
3444 {
3445         struct btusb_data *data = hci_get_drvdata(hdev);
3446         struct urb *urb;
3447
3448         if (!data->diag)
3449                 return -ENODEV;
3450
3451         if (!test_bit(HCI_RUNNING, &hdev->flags))
3452                 return -ENETDOWN;
3453
3454         urb = alloc_diag_urb(hdev, enable);
3455         if (IS_ERR(urb))
3456                 return PTR_ERR(urb);
3457
3458         return submit_or_queue_tx_urb(hdev, urb);
3459 }
3460 #endif
3461
3462 #ifdef CONFIG_PM
3463 static irqreturn_t btusb_oob_wake_handler(int irq, void *priv)
3464 {
3465         struct btusb_data *data = priv;
3466
3467         pm_wakeup_event(&data->udev->dev, 0);
3468         pm_system_wakeup();
3469
3470         /* Disable only if not already disabled (keep it balanced) */
3471         if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
3472                 disable_irq_nosync(irq);
3473                 disable_irq_wake(irq);
3474         }
3475         return IRQ_HANDLED;
3476 }
3477
3478 static const struct of_device_id btusb_match_table[] = {
3479         { .compatible = "usb1286,204e" },
3480         { .compatible = "usbcf3,e300" }, /* QCA6174A */
3481         { .compatible = "usb4ca,301a" }, /* QCA6174A (Lite-On) */
3482         { }
3483 };
3484 MODULE_DEVICE_TABLE(of, btusb_match_table);
3485
3486 /* Use an oob wakeup pin? */
3487 static int btusb_config_oob_wake(struct hci_dev *hdev)
3488 {
3489         struct btusb_data *data = hci_get_drvdata(hdev);
3490         struct device *dev = &data->udev->dev;
3491         int irq, ret;
3492
3493         clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
3494
3495         if (!of_match_device(btusb_match_table, dev))
3496                 return 0;
3497
3498         /* Move on if no IRQ specified */
3499         irq = of_irq_get_byname(dev->of_node, "wakeup");
3500         if (irq <= 0) {
3501                 bt_dev_dbg(hdev, "%s: no OOB Wakeup IRQ in DT", __func__);
3502                 return 0;
3503         }
3504
3505         irq_set_status_flags(irq, IRQ_NOAUTOEN);
3506         ret = devm_request_irq(&hdev->dev, irq, btusb_oob_wake_handler,
3507                                0, "OOB Wake-on-BT", data);
3508         if (ret) {
3509                 bt_dev_err(hdev, "%s: IRQ request failed", __func__);
3510                 return ret;
3511         }
3512
3513         ret = device_init_wakeup(dev, true);
3514         if (ret) {
3515                 bt_dev_err(hdev, "%s: failed to init_wakeup", __func__);
3516                 return ret;
3517         }
3518
3519         data->oob_wake_irq = irq;
3520         bt_dev_info(hdev, "OOB Wake-on-BT configured at IRQ %u", irq);
3521         return 0;
3522 }
3523 #endif
3524
3525 static void btusb_check_needs_reset_resume(struct usb_interface *intf)
3526 {
3527         if (dmi_check_system(btusb_needs_reset_resume_table))
3528                 interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME;
3529 }
3530
3531 static int btusb_probe(struct usb_interface *intf,
3532                        const struct usb_device_id *id)
3533 {
3534         struct usb_endpoint_descriptor *ep_desc;
3535         struct gpio_desc *reset_gpio;
3536         struct btusb_data *data;
3537         struct hci_dev *hdev;
3538         unsigned ifnum_base;
3539         int i, err;
3540
3541         BT_DBG("intf %p id %p", intf, id);
3542
3543         /* interface numbers are hardcoded in the spec */
3544         if (intf->cur_altsetting->desc.bInterfaceNumber != 0) {
3545                 if (!(id->driver_info & BTUSB_IFNUM_2))
3546                         return -ENODEV;
3547                 if (intf->cur_altsetting->desc.bInterfaceNumber != 2)
3548                         return -ENODEV;
3549         }
3550
3551         ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber;
3552
3553         if (!id->driver_info) {
3554                 const struct usb_device_id *match;
3555
3556                 match = usb_match_id(intf, blacklist_table);
3557                 if (match)
3558                         id = match;
3559         }
3560
3561         if (id->driver_info == BTUSB_IGNORE)
3562                 return -ENODEV;
3563
3564         if (id->driver_info & BTUSB_ATH3012) {
3565                 struct usb_device *udev = interface_to_usbdev(intf);
3566
3567                 /* Old firmware would otherwise let ath3k driver load
3568                  * patch and sysconfig files
3569                  */
3570                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001 &&
3571                     !btusb_qca_need_patch(udev))
3572                         return -ENODEV;
3573         }
3574
3575         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
3576         if (!data)
3577                 return -ENOMEM;
3578
3579         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
3580                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
3581
3582                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
3583                         data->intr_ep = ep_desc;
3584                         continue;
3585                 }
3586
3587                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
3588                         data->bulk_tx_ep = ep_desc;
3589                         continue;
3590                 }
3591
3592                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
3593                         data->bulk_rx_ep = ep_desc;
3594                         continue;
3595                 }
3596         }
3597
3598         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
3599                 return -ENODEV;
3600
3601         if (id->driver_info & BTUSB_AMP) {
3602                 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
3603                 data->cmdreq = 0x2b;
3604         } else {
3605                 data->cmdreq_type = USB_TYPE_CLASS;
3606                 data->cmdreq = 0x00;
3607         }
3608
3609         data->udev = interface_to_usbdev(intf);
3610         data->intf = intf;
3611
3612         INIT_WORK(&data->work, btusb_work);
3613         INIT_WORK(&data->waker, btusb_waker);
3614         init_usb_anchor(&data->deferred);
3615         init_usb_anchor(&data->tx_anchor);
3616         spin_lock_init(&data->txlock);
3617
3618         init_usb_anchor(&data->intr_anchor);
3619         init_usb_anchor(&data->bulk_anchor);
3620         init_usb_anchor(&data->isoc_anchor);
3621         init_usb_anchor(&data->diag_anchor);
3622         init_usb_anchor(&data->ctrl_anchor);
3623         spin_lock_init(&data->rxlock);
3624
3625         if (id->driver_info & BTUSB_INTEL_NEW) {
3626                 data->recv_event = btusb_recv_event_intel;
3627                 data->recv_bulk = btusb_recv_bulk_intel;
3628                 set_bit(BTUSB_BOOTLOADER, &data->flags);
3629         } else {
3630                 data->recv_event = hci_recv_frame;
3631                 data->recv_bulk = btusb_recv_bulk;
3632         }
3633
3634         hdev = hci_alloc_dev();
3635         if (!hdev)
3636                 return -ENOMEM;
3637
3638         hdev->bus = HCI_USB;
3639         hci_set_drvdata(hdev, data);
3640
3641         if (id->driver_info & BTUSB_AMP)
3642                 hdev->dev_type = HCI_AMP;
3643         else
3644                 hdev->dev_type = HCI_PRIMARY;
3645
3646         data->hdev = hdev;
3647
3648         SET_HCIDEV_DEV(hdev, &intf->dev);
3649
3650         reset_gpio = gpiod_get_optional(&data->udev->dev, "reset",
3651                                         GPIOD_OUT_LOW);
3652         if (IS_ERR(reset_gpio)) {
3653                 err = PTR_ERR(reset_gpio);
3654                 goto out_free_dev;
3655         } else if (reset_gpio) {
3656                 data->reset_gpio = reset_gpio;
3657         }
3658
3659         hdev->open   = btusb_open;
3660         hdev->close  = btusb_close;
3661         hdev->flush  = btusb_flush;
3662         hdev->send   = btusb_send_frame;
3663         hdev->notify = btusb_notify;
3664
3665 #ifdef CONFIG_PM
3666         err = btusb_config_oob_wake(hdev);
3667         if (err)
3668                 goto out_free_dev;
3669
3670         /* Marvell devices may need a specific chip configuration */
3671         if (id->driver_info & BTUSB_MARVELL && data->oob_wake_irq) {
3672                 err = marvell_config_oob_wake(hdev);
3673                 if (err)
3674                         goto out_free_dev;
3675         }
3676 #endif
3677         if (id->driver_info & BTUSB_CW6622)
3678                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
3679
3680         if (id->driver_info & BTUSB_BCM2045)
3681                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
3682
3683         if (id->driver_info & BTUSB_BCM92035)
3684                 hdev->setup = btusb_setup_bcm92035;
3685
3686 #ifdef CONFIG_BT_HCIBTUSB_BCM
3687         if (id->driver_info & BTUSB_BCM_PATCHRAM) {
3688                 hdev->manufacturer = 15;
3689                 hdev->setup = btbcm_setup_patchram;
3690                 hdev->set_diag = btusb_bcm_set_diag;
3691                 hdev->set_bdaddr = btbcm_set_bdaddr;
3692
3693                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
3694                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
3695         }
3696
3697         if (id->driver_info & BTUSB_BCM_APPLE) {
3698                 hdev->manufacturer = 15;
3699                 hdev->setup = btbcm_setup_apple;
3700                 hdev->set_diag = btusb_bcm_set_diag;
3701
3702                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
3703                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
3704         }
3705 #endif
3706
3707         if (id->driver_info & BTUSB_INTEL) {
3708                 hdev->manufacturer = 2;
3709                 hdev->setup = btusb_setup_intel;
3710                 hdev->shutdown = btusb_shutdown_intel;
3711                 hdev->set_diag = btintel_set_diag_mfg;
3712                 hdev->set_bdaddr = btintel_set_bdaddr;
3713                 hdev->cmd_timeout = btusb_intel_cmd_timeout;
3714                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3715                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3716                 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
3717         }
3718
3719         if (id->driver_info & BTUSB_INTEL_NEW) {
3720                 hdev->manufacturer = 2;
3721                 hdev->send = btusb_send_frame_intel;
3722                 hdev->setup = btusb_setup_intel_new;
3723                 hdev->shutdown = btusb_shutdown_intel_new;
3724                 hdev->hw_error = btintel_hw_error;
3725                 hdev->set_diag = btintel_set_diag;
3726                 hdev->set_bdaddr = btintel_set_bdaddr;
3727                 hdev->cmd_timeout = btusb_intel_cmd_timeout;
3728                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3729                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3730                 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
3731         }
3732
3733         if (id->driver_info & BTUSB_MARVELL)
3734                 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
3735
3736 #ifdef CONFIG_BT_HCIBTUSB_MTK
3737         if (id->driver_info & BTUSB_MEDIATEK) {
3738                 hdev->setup = btusb_mtk_setup;
3739                 hdev->shutdown = btusb_mtk_shutdown;
3740                 hdev->manufacturer = 70;
3741                 set_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks);
3742         }
3743 #endif
3744
3745         if (id->driver_info & BTUSB_SWAVE) {
3746                 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
3747                 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
3748         }
3749
3750         if (id->driver_info & BTUSB_INTEL_BOOT) {
3751                 hdev->manufacturer = 2;
3752                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3753         }
3754
3755         if (id->driver_info & BTUSB_ATH3012) {
3756                 data->setup_on_usb = btusb_setup_qca;
3757                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
3758                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3759                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3760         }
3761
3762         if (id->driver_info & BTUSB_QCA_ROME) {
3763                 data->setup_on_usb = btusb_setup_qca;
3764                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
3765                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3766                 btusb_check_needs_reset_resume(intf);
3767         }
3768
3769 #ifdef CONFIG_BT_HCIBTUSB_RTL
3770         if (id->driver_info & BTUSB_REALTEK) {
3771                 hdev->setup = btrtl_setup_realtek;
3772                 hdev->shutdown = btrtl_shutdown_realtek;
3773
3774                 /* Realtek devices lose their updated firmware over suspend,
3775                  * but the USB hub doesn't notice any status change.
3776                  * Explicitly request a device reset on resume.
3777                  */
3778                 interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME;
3779         }
3780 #endif
3781
3782         if (id->driver_info & BTUSB_AMP) {
3783                 /* AMP controllers do not support SCO packets */
3784                 data->isoc = NULL;
3785         } else {
3786                 /* Interface orders are hardcoded in the specification */
3787                 data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1);
3788                 data->isoc_ifnum = ifnum_base + 1;
3789         }
3790
3791         if (!reset)
3792                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3793
3794         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
3795                 if (!disable_scofix)
3796                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
3797         }
3798
3799         if (id->driver_info & BTUSB_BROKEN_ISOC)
3800                 data->isoc = NULL;
3801
3802         if (id->driver_info & BTUSB_DIGIANSWER) {
3803                 data->cmdreq_type = USB_TYPE_VENDOR;
3804                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3805         }
3806
3807         if (id->driver_info & BTUSB_CSR) {
3808                 struct usb_device *udev = data->udev;
3809                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
3810
3811                 /* Old firmware would otherwise execute USB reset */
3812                 if (bcdDevice < 0x117)
3813                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3814
3815                 /* Fake CSR devices with broken commands */
3816                 if (bcdDevice <= 0x100 || bcdDevice == 0x134)
3817                         hdev->setup = btusb_setup_csr;
3818
3819                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3820         }
3821
3822         if (id->driver_info & BTUSB_SNIFFER) {
3823                 struct usb_device *udev = data->udev;
3824
3825                 /* New sniffer firmware has crippled HCI interface */
3826                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
3827                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3828         }
3829
3830         if (id->driver_info & BTUSB_INTEL_BOOT) {
3831                 /* A bug in the bootloader causes that interrupt interface is
3832                  * only enabled after receiving SetInterface(0, AltSetting=0).
3833                  */
3834                 err = usb_set_interface(data->udev, 0, 0);
3835                 if (err < 0) {
3836                         BT_ERR("failed to set interface 0, alt 0 %d", err);
3837                         goto out_free_dev;
3838                 }
3839         }
3840
3841         if (data->isoc) {
3842                 err = usb_driver_claim_interface(&btusb_driver,
3843                                                  data->isoc, data);
3844                 if (err < 0)
3845                         goto out_free_dev;
3846         }
3847
3848 #ifdef CONFIG_BT_HCIBTUSB_BCM
3849         if (data->diag) {
3850                 if (!usb_driver_claim_interface(&btusb_driver,
3851                                                 data->diag, data))
3852                         __set_diag_interface(hdev);
3853                 else
3854                         data->diag = NULL;
3855         }
3856 #endif
3857
3858         if (enable_autosuspend)
3859                 usb_enable_autosuspend(data->udev);
3860
3861         err = hci_register_dev(hdev);
3862         if (err < 0)
3863                 goto out_free_dev;
3864
3865         usb_set_intfdata(intf, data);
3866
3867         return 0;
3868
3869 out_free_dev:
3870         if (data->reset_gpio)
3871                 gpiod_put(data->reset_gpio);
3872         hci_free_dev(hdev);
3873         return err;
3874 }
3875
3876 static void btusb_disconnect(struct usb_interface *intf)
3877 {
3878         struct btusb_data *data = usb_get_intfdata(intf);
3879         struct hci_dev *hdev;
3880
3881         BT_DBG("intf %p", intf);
3882
3883         if (!data)
3884                 return;
3885
3886         hdev = data->hdev;
3887         usb_set_intfdata(data->intf, NULL);
3888
3889         if (data->isoc)
3890                 usb_set_intfdata(data->isoc, NULL);
3891
3892         if (data->diag)
3893                 usb_set_intfdata(data->diag, NULL);
3894
3895         hci_unregister_dev(hdev);
3896
3897         if (intf == data->intf) {
3898                 if (data->isoc)
3899                         usb_driver_release_interface(&btusb_driver, data->isoc);
3900                 if (data->diag)
3901                         usb_driver_release_interface(&btusb_driver, data->diag);
3902         } else if (intf == data->isoc) {
3903                 if (data->diag)
3904                         usb_driver_release_interface(&btusb_driver, data->diag);
3905                 usb_driver_release_interface(&btusb_driver, data->intf);
3906         } else if (intf == data->diag) {
3907                 usb_driver_release_interface(&btusb_driver, data->intf);
3908                 if (data->isoc)
3909                         usb_driver_release_interface(&btusb_driver, data->isoc);
3910         }
3911
3912         if (data->oob_wake_irq)
3913                 device_init_wakeup(&data->udev->dev, false);
3914
3915         if (data->reset_gpio)
3916                 gpiod_put(data->reset_gpio);
3917
3918         hci_free_dev(hdev);
3919 }
3920
3921 #ifdef CONFIG_PM
3922 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
3923 {
3924         struct btusb_data *data = usb_get_intfdata(intf);
3925
3926         BT_DBG("intf %p", intf);
3927
3928         if (data->suspend_count++)
3929                 return 0;
3930
3931         spin_lock_irq(&data->txlock);
3932         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
3933                 set_bit(BTUSB_SUSPENDING, &data->flags);
3934                 spin_unlock_irq(&data->txlock);
3935         } else {
3936                 spin_unlock_irq(&data->txlock);
3937                 data->suspend_count--;
3938                 return -EBUSY;
3939         }
3940
3941         cancel_work_sync(&data->work);
3942
3943         btusb_stop_traffic(data);
3944         usb_kill_anchored_urbs(&data->tx_anchor);
3945
3946         if (data->oob_wake_irq && device_may_wakeup(&data->udev->dev)) {
3947                 set_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
3948                 enable_irq_wake(data->oob_wake_irq);
3949                 enable_irq(data->oob_wake_irq);
3950         }
3951
3952         return 0;
3953 }
3954
3955 static void play_deferred(struct btusb_data *data)
3956 {
3957         struct urb *urb;
3958         int err;
3959
3960         while ((urb = usb_get_from_anchor(&data->deferred))) {
3961                 usb_anchor_urb(urb, &data->tx_anchor);
3962
3963                 err = usb_submit_urb(urb, GFP_ATOMIC);
3964                 if (err < 0) {
3965                         if (err != -EPERM && err != -ENODEV)
3966                                 BT_ERR("%s urb %p submission failed (%d)",
3967                                        data->hdev->name, urb, -err);
3968                         kfree(urb->setup_packet);
3969                         usb_unanchor_urb(urb);
3970                         usb_free_urb(urb);
3971                         break;
3972                 }
3973
3974                 data->tx_in_flight++;
3975                 usb_free_urb(urb);
3976         }
3977
3978         /* Cleanup the rest deferred urbs. */
3979         while ((urb = usb_get_from_anchor(&data->deferred))) {
3980                 kfree(urb->setup_packet);
3981                 usb_free_urb(urb);
3982         }
3983 }
3984
3985 static int btusb_resume(struct usb_interface *intf)
3986 {
3987         struct btusb_data *data = usb_get_intfdata(intf);
3988         struct hci_dev *hdev = data->hdev;
3989         int err = 0;
3990
3991         BT_DBG("intf %p", intf);
3992
3993         if (--data->suspend_count)
3994                 return 0;
3995
3996         /* Disable only if not already disabled (keep it balanced) */
3997         if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
3998                 disable_irq(data->oob_wake_irq);
3999                 disable_irq_wake(data->oob_wake_irq);
4000         }
4001
4002         if (!test_bit(HCI_RUNNING, &hdev->flags))
4003                 goto done;
4004
4005         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
4006                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
4007                 if (err < 0) {
4008                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
4009                         goto failed;
4010                 }
4011         }
4012
4013         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
4014                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
4015                 if (err < 0) {
4016                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
4017                         goto failed;
4018                 }
4019
4020                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
4021         }
4022
4023         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
4024                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
4025                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
4026                 else
4027                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
4028         }
4029
4030         spin_lock_irq(&data->txlock);
4031         play_deferred(data);
4032         clear_bit(BTUSB_SUSPENDING, &data->flags);
4033         spin_unlock_irq(&data->txlock);
4034         schedule_work(&data->work);
4035
4036         return 0;
4037
4038 failed:
4039         usb_scuttle_anchored_urbs(&data->deferred);
4040 done:
4041         spin_lock_irq(&data->txlock);
4042         clear_bit(BTUSB_SUSPENDING, &data->flags);
4043         spin_unlock_irq(&data->txlock);
4044
4045         return err;
4046 }
4047 #endif
4048
4049 static struct usb_driver btusb_driver = {
4050         .name           = "btusb",
4051         .probe          = btusb_probe,
4052         .disconnect     = btusb_disconnect,
4053 #ifdef CONFIG_PM
4054         .suspend        = btusb_suspend,
4055         .resume         = btusb_resume,
4056 #endif
4057         .id_table       = btusb_table,
4058         .supports_autosuspend = 1,
4059         .disable_hub_initiated_lpm = 1,
4060 };
4061
4062 module_usb_driver(btusb_driver);
4063
4064 module_param(disable_scofix, bool, 0644);
4065 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
4066
4067 module_param(force_scofix, bool, 0644);
4068 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
4069
4070 module_param(enable_autosuspend, bool, 0644);
4071 MODULE_PARM_DESC(enable_autosuspend, "Enable USB autosuspend by default");
4072
4073 module_param(reset, bool, 0644);
4074 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
4075
4076 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
4077 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
4078 MODULE_VERSION(VERSION);
4079 MODULE_LICENSE("GPL");