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 <[email protected]>
   7  */
   8
   9 #include <linux/dmi.h>
  10 #include <linux/module.h>
  11 #include <linux/usb.h>
  12 #include <linux/usb/quirks.h>
  13 #include <linux/firmware.h>
  14 #include <linux/iopoll.h>
  15 #include <linux/of_device.h>
  16 #include <linux/of_irq.h>
  17 #include <linux/suspend.h>
  18 #include <linux/gpio/consumer.h>
  19 #include <asm/unaligned.h>
  20
  21 #include <net/bluetooth/bluetooth.h>
  22 #include <net/bluetooth/hci_core.h>
  23
  24 #include "btintel.h"
  25 #include "btbcm.h"
  26 #include "btrtl.h"
  27
  28 #define VERSION "0.8"
  29
  30 static bool disable_scofix;
  31 static bool force_scofix;
  32 static bool enable_autosuspend = IS_ENABLED(CONFIG_BT_HCIBTUSB_AUTOSUSPEND);
  33
  34 static bool reset = true;
  35
  36 static struct usb_driver btusb_driver;
  37
  38 #define BTUSB_IGNORE            0x01
  39 #define BTUSB_DIGIANSWER        0x02
  40 #define BTUSB_CSR               0x04
  41 #define BTUSB_SNIFFER           0x08
  42 #define BTUSB_BCM92035          0x10
  43 #define BTUSB_BROKEN_ISOC       0x20
  44 #define BTUSB_WRONG_SCO_MTU     0x40
  45 #define BTUSB_ATH3012           0x80
  46 #define BTUSB_INTEL             0x100
  47 #define BTUSB_INTEL_BOOT        0x200
  48 #define BTUSB_BCM_PATCHRAM      0x400
  49 #define BTUSB_MARVELL           0x800
  50 #define BTUSB_SWAVE             0x1000
  51 #define BTUSB_INTEL_NEW         0x2000
  52 #define BTUSB_AMP               0x4000
  53 #define BTUSB_QCA_ROME          0x8000
  54 #define BTUSB_BCM_APPLE         0x10000
  55 #define BTUSB_REALTEK           0x20000
  56 #define BTUSB_BCM2045           0x40000
  57 #define BTUSB_IFNUM_2           0x80000
  58 #define BTUSB_CW6622            0x100000
  59 #define BTUSB_MEDIATEK          0x200000
  60
  61 static const struct usb_device_id btusb_table[] = {
  62         /* Generic Bluetooth USB device */
  63         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  64
  65         /* Generic Bluetooth AMP device */
  66         { USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP },
  67
  68         /* Generic Bluetooth USB interface */
  69         { USB_INTERFACE_INFO(0xe0, 0x01, 0x01) },
  70
  71         /* Apple-specific (Broadcom) devices */
  72         { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01),
  73           .driver_info = BTUSB_BCM_APPLE | BTUSB_IFNUM_2 },
  74
  75         /* MediaTek MT76x0E */
  76         { USB_DEVICE(0x0e8d, 0x763f) },
  77
  78         /* Broadcom SoftSailing reporting vendor specific */
  79         { USB_DEVICE(0x0a5c, 0x21e1) },
  80
  81         /* Apple MacBookPro 7,1 */
  82         { USB_DEVICE(0x05ac, 0x8213) },
  83
  84         /* Apple iMac11,1 */
  85         { USB_DEVICE(0x05ac, 0x8215) },
  86
  87         /* Apple MacBookPro6,2 */
  88         { USB_DEVICE(0x05ac, 0x8218) },
  89
  90         /* Apple MacBookAir3,1, MacBookAir3,2 */
  91         { USB_DEVICE(0x05ac, 0x821b) },
  92
  93         /* Apple MacBookAir4,1 */
  94         { USB_DEVICE(0x05ac, 0x821f) },
  95
  96         /* Apple MacBookPro8,2 */
  97         { USB_DEVICE(0x05ac, 0x821a) },
  98
  99         /* Apple MacMini5,1 */
 100         { USB_DEVICE(0x05ac, 0x8281) },
 101
 102         /* AVM BlueFRITZ! USB v2.0 */
 103         { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE },
 104
 105         /* Bluetooth Ultraport Module from IBM */
 106         { USB_DEVICE(0x04bf, 0x030a) },
 107
 108         /* ALPS Modules with non-standard id */
 109         { USB_DEVICE(0x044e, 0x3001) },
 110         { USB_DEVICE(0x044e, 0x3002) },
 111
 112         /* Ericsson with non-standard id */
 113         { USB_DEVICE(0x0bdb, 0x1002) },
 114
 115         /* Canyon CN-BTU1 with HID interfaces */
 116         { USB_DEVICE(0x0c10, 0x0000) },
 117
 118         /* Broadcom BCM20702A0 */
 119         { USB_DEVICE(0x413c, 0x8197) },
 120
 121         /* Broadcom BCM20702B0 (Dynex/Insignia) */
 122         { USB_DEVICE(0x19ff, 0x0239), .driver_info = BTUSB_BCM_PATCHRAM },
 123
 124         /* Broadcom BCM43142A0 (Foxconn/Lenovo) */
 125         { USB_VENDOR_AND_INTERFACE_INFO(0x105b, 0xff, 0x01, 0x01),
 126           .driver_info = BTUSB_BCM_PATCHRAM },
 127
 128         /* Broadcom BCM920703 (HTC Vive) */
 129         { USB_VENDOR_AND_INTERFACE_INFO(0x0bb4, 0xff, 0x01, 0x01),
 130           .driver_info = BTUSB_BCM_PATCHRAM },
 131
 132         /* Foxconn - Hon Hai */
 133         { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01),
 134           .driver_info = BTUSB_BCM_PATCHRAM },
 135
 136         /* Lite-On Technology - Broadcom based */
 137         { USB_VENDOR_AND_INTERFACE_INFO(0x04ca, 0xff, 0x01, 0x01),
 138           .driver_info = BTUSB_BCM_PATCHRAM },
 139
 140         /* Broadcom devices with vendor specific id */
 141         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
 142           .driver_info = BTUSB_BCM_PATCHRAM },
 143
 144         /* ASUSTek Computer - Broadcom based */
 145         { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01),
 146           .driver_info = BTUSB_BCM_PATCHRAM },
 147
 148         /* Belkin F8065bf - Broadcom based */
 149         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01),
 150           .driver_info = BTUSB_BCM_PATCHRAM },
 151
 152         /* IMC Networks - Broadcom based */
 153         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01),
 154           .driver_info = BTUSB_BCM_PATCHRAM },
 155
 156         /* Dell Computer - Broadcom based  */
 157         { USB_VENDOR_AND_INTERFACE_INFO(0x413c, 0xff, 0x01, 0x01),
 158           .driver_info = BTUSB_BCM_PATCHRAM },
 159
 160         /* Toshiba Corp - Broadcom based */
 161         { USB_VENDOR_AND_INTERFACE_INFO(0x0930, 0xff, 0x01, 0x01),
 162           .driver_info = BTUSB_BCM_PATCHRAM },
 163
 164         /* Intel Bluetooth USB Bootloader (RAM module) */
 165         { USB_DEVICE(0x8087, 0x0a5a),
 166           .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
 167
 168         { }     /* Terminating entry */
 169 };
 170
 171 MODULE_DEVICE_TABLE(usb, btusb_table);
 172
 173 static const struct usb_device_id blacklist_table[] = {
 174         /* CSR BlueCore devices */
 175         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 176
 177         /* Broadcom BCM2033 without firmware */
 178         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 179
 180         /* Broadcom BCM2045 devices */
 181         { USB_DEVICE(0x0a5c, 0x2045), .driver_info = BTUSB_BCM2045 },
 182
 183         /* Atheros 3011 with sflash firmware */
 184         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 185         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 186         { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE },
 187         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 188         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 189         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 190         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 191
 192         /* Atheros AR9285 Malbec with sflash firmware */
 193         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 194
 195         /* Atheros 3012 with sflash firmware */
 196         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 197         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 198         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 199         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 200         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 201         { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
 202         { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
 203         { USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 },
 204         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 205         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 206         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 207         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 208         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 209         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 210         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 211         { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
 212         { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
 213         { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
 214         { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 },
 215         { USB_DEVICE(0x04ca, 0x3018), .driver_info = BTUSB_ATH3012 },
 216         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 217         { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
 218         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 219         { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
 220         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 221         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 222         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 223         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 224         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 225         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
 226         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 227         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 228         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 229         { USB_DEVICE(0x0cf3, 0x817b), .driver_info = BTUSB_ATH3012 },
 230         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 231         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 232         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 233         { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 },
 234         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 235         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 236         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 237         { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 },
 238         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 239         { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
 240         { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
 241         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
 242         { USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 },
 243         { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
 244         { USB_DEVICE(0x13d3, 0x3487), .driver_info = BTUSB_ATH3012 },
 245         { USB_DEVICE(0x13d3, 0x3490), .driver_info = BTUSB_ATH3012 },
 246
 247         /* Atheros AR5BBU12 with sflash firmware */
 248         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 249
 250         /* Atheros AR5BBU12 with sflash firmware */
 251         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 252         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 253
 254         /* QCA ROME chipset */
 255         { USB_DEVICE(0x0cf3, 0x535b), .driver_info = BTUSB_QCA_ROME },
 256         { USB_DEVICE(0x0cf3, 0xe007), .driver_info = BTUSB_QCA_ROME },
 257         { USB_DEVICE(0x0cf3, 0xe009), .driver_info = BTUSB_QCA_ROME },
 258         { USB_DEVICE(0x0cf3, 0xe010), .driver_info = BTUSB_QCA_ROME },
 259         { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME },
 260         { USB_DEVICE(0x0cf3, 0xe301), .driver_info = BTUSB_QCA_ROME },
 261         { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME },
 262         { USB_DEVICE(0x0489, 0xe092), .driver_info = BTUSB_QCA_ROME },
 263         { USB_DEVICE(0x0489, 0xe09f), .driver_info = BTUSB_QCA_ROME },
 264         { USB_DEVICE(0x0489, 0xe0a2), .driver_info = BTUSB_QCA_ROME },
 265         { USB_DEVICE(0x04ca, 0x3011), .driver_info = BTUSB_QCA_ROME },
 266         { USB_DEVICE(0x04ca, 0x3015), .driver_info = BTUSB_QCA_ROME },
 267         { USB_DEVICE(0x04ca, 0x3016), .driver_info = BTUSB_QCA_ROME },
 268         { USB_DEVICE(0x04ca, 0x301a), .driver_info = BTUSB_QCA_ROME },
 269         { USB_DEVICE(0x13d3, 0x3491), .driver_info = BTUSB_QCA_ROME },
 270         { USB_DEVICE(0x13d3, 0x3496), .driver_info = BTUSB_QCA_ROME },
 271         { USB_DEVICE(0x13d3, 0x3501), .driver_info = BTUSB_QCA_ROME },
 272
 273         /* Broadcom BCM2035 */
 274         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 275         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 276         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 277
 278         /* Broadcom BCM2045 */
 279         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 280         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 281
 282         /* IBM/Lenovo ThinkPad with Broadcom chip */
 283         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 284         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 285
 286         /* HP laptop with Broadcom chip */
 287         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 288
 289         /* Dell laptop with Broadcom chip */
 290         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 291
 292         /* Dell Wireless 370 and 410 devices */
 293         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 294         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 295
 296         /* Belkin F8T012 and F8T013 devices */
 297         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 298         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 299
 300         /* Asus WL-BTD202 device */
 301         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 302
 303         /* Kensington Bluetooth USB adapter */
 304         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 305
 306         /* RTX Telecom based adapters with buggy SCO support */
 307         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 308         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 309
 310         /* CONWISE Technology based adapters with buggy SCO support */
 311         { USB_DEVICE(0x0e5e, 0x6622),
 312           .driver_info = BTUSB_BROKEN_ISOC | BTUSB_CW6622},
 313
 314         /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
 315         { USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE },
 316
 317         /* Digianswer devices */
 318         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 319         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 320
 321         /* CSR BlueCore Bluetooth Sniffer */
 322         { USB_DEVICE(0x0a12, 0x0002),
 323           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 324
 325         /* Frontline ComProbe Bluetooth Sniffer */
 326         { USB_DEVICE(0x16d3, 0x0002),
 327           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 328
 329         /* Marvell Bluetooth devices */
 330         { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
 331         { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
 332         { USB_DEVICE(0x1286, 0x204e), .driver_info = BTUSB_MARVELL },
 333
 334         /* Intel Bluetooth devices */
 335         { USB_DEVICE(0x8087, 0x0025), .driver_info = BTUSB_INTEL_NEW },
 336         { USB_DEVICE(0x8087, 0x0026), .driver_info = BTUSB_INTEL_NEW },
 337         { USB_DEVICE(0x8087, 0x0029), .driver_info = BTUSB_INTEL_NEW },
 338         { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR },
 339         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 340         { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
 341         { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_NEW },
 342         { USB_DEVICE(0x8087, 0x0aa7), .driver_info = BTUSB_INTEL },
 343         { USB_DEVICE(0x8087, 0x0aaa), .driver_info = BTUSB_INTEL_NEW },
 344
 345         /* Other Intel Bluetooth devices */
 346         { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01),
 347           .driver_info = BTUSB_IGNORE },
 348
 349         /* Realtek Bluetooth devices */
 350         { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01),
 351           .driver_info = BTUSB_REALTEK },
 352
 353         /* MediaTek Bluetooth devices */
 354         { USB_VENDOR_AND_INTERFACE_INFO(0x0e8d, 0xe0, 0x01, 0x01),
 355           .driver_info = BTUSB_MEDIATEK },
 356
 357         /* Additional Realtek 8723AE Bluetooth devices */
 358         { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK },
 359         { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK },
 360
 361         /* Additional Realtek 8723BE Bluetooth devices */
 362         { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK },
 363         { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK },
 364         { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
 365         { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
 366         { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },
 367         { USB_DEVICE(0x13d3, 0x3494), .driver_info = BTUSB_REALTEK },
 368
 369         /* Additional Realtek 8723BU Bluetooth devices */
 370         { USB_DEVICE(0x7392, 0xa611), .driver_info = BTUSB_REALTEK },
 371
 372         /* Additional Realtek 8723DE Bluetooth devices */
 373         { USB_DEVICE(0x0bda, 0xb009), .driver_info = BTUSB_REALTEK },
 374         { USB_DEVICE(0x2ff8, 0xb011), .driver_info = BTUSB_REALTEK },
 375
 376         /* Additional Realtek 8821AE Bluetooth devices */
 377         { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
 378         { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },
 379         { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK },
 380         { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK },
 381         { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK },
 382
 383         /* Additional Realtek 8822BE Bluetooth devices */
 384         { USB_DEVICE(0x13d3, 0x3526), .driver_info = BTUSB_REALTEK },
 385         { USB_DEVICE(0x0b05, 0x185c), .driver_info = BTUSB_REALTEK },
 386
 387         /* Additional Realtek 8822CE Bluetooth devices */
 388         { USB_DEVICE(0x04ca, 0x4005), .driver_info = BTUSB_REALTEK },
 389
 390         /* Silicon Wave based devices */
 391         { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE },
 392
 393         { }     /* Terminating entry */
 394 };
 395
 396 /* The Bluetooth USB module build into some devices needs to be reset on resume,
 397  * this is a problem with the platform (likely shutting off all power) not with
 398  * the module itself. So we use a DMI list to match known broken platforms.
 399  */
 400 static const struct dmi_system_id btusb_needs_reset_resume_table[] = {
 401         {
 402                 /* Dell OptiPlex 3060 (QCA ROME device 0cf3:e007) */
 403                 .matches = {
 404                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 405                         DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 3060"),
 406                 },
 407         },
 408         {
 409                 /* Dell XPS 9360 (QCA ROME device 0cf3:e300) */
 410                 .matches = {
 411                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 412                         DMI_MATCH(DMI_PRODUCT_NAME, "XPS 13 9360"),
 413                 },
 414         },
 415         {
 416                 /* Dell Inspiron 5565 (QCA ROME device 0cf3:e009) */
 417                 .matches = {
 418                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 419                         DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5565"),
 420                 },
 421         },
 422         {}
 423 };
 424
 425 #define BTUSB_MAX_ISOC_FRAMES   10
 426
 427 #define BTUSB_INTR_RUNNING      0
 428 #define BTUSB_BULK_RUNNING      1
 429 #define BTUSB_ISOC_RUNNING      2
 430 #define BTUSB_SUSPENDING        3
 431 #define BTUSB_DID_ISO_RESUME    4
 432 #define BTUSB_BOOTLOADER        5
 433 #define BTUSB_DOWNLOADING       6
 434 #define BTUSB_FIRMWARE_LOADED   7
 435 #define BTUSB_FIRMWARE_FAILED   8
 436 #define BTUSB_BOOTING           9
 437 #define BTUSB_DIAG_RUNNING      10
 438 #define BTUSB_OOB_WAKE_ENABLED  11
 439 #define BTUSB_HW_RESET_ACTIVE   12
 440 #define BTUSB_TX_WAIT_VND_EVT   13
 441 #define BTUSB_WAKEUP_DISABLE    14
 442
 443 struct btusb_data {
 444         struct hci_dev       *hdev;
 445         struct usb_device    *udev;
 446         struct usb_interface *intf;
 447         struct usb_interface *isoc;
 448         struct usb_interface *diag;
 449         unsigned isoc_ifnum;
 450
 451         unsigned long flags;
 452
 453         struct work_struct work;
 454         struct work_struct waker;
 455
 456         struct usb_anchor deferred;
 457         struct usb_anchor tx_anchor;
 458         int tx_in_flight;
 459         spinlock_t txlock;
 460
 461         struct usb_anchor intr_anchor;
 462         struct usb_anchor bulk_anchor;
 463         struct usb_anchor isoc_anchor;
 464         struct usb_anchor diag_anchor;
 465         struct usb_anchor ctrl_anchor;
 466         spinlock_t rxlock;
 467
 468         struct sk_buff *evt_skb;
 469         struct sk_buff *acl_skb;
 470         struct sk_buff *sco_skb;
 471
 472         struct usb_endpoint_descriptor *intr_ep;
 473         struct usb_endpoint_descriptor *bulk_tx_ep;
 474         struct usb_endpoint_descriptor *bulk_rx_ep;
 475         struct usb_endpoint_descriptor *isoc_tx_ep;
 476         struct usb_endpoint_descriptor *isoc_rx_ep;
 477         struct usb_endpoint_descriptor *diag_tx_ep;
 478         struct usb_endpoint_descriptor *diag_rx_ep;
 479
 480         struct gpio_desc *reset_gpio;
 481
 482         __u8 cmdreq_type;
 483         __u8 cmdreq;
 484
 485         unsigned int sco_num;
 486         int isoc_altsetting;
 487         int suspend_count;
 488
 489         int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
 490         int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
 491
 492         int (*setup_on_usb)(struct hci_dev *hdev);
 493
 494         int oob_wake_irq;   /* irq for out-of-band wake-on-bt */
 495         unsigned cmd_timeout_cnt;
 496 };
 497
 498
 499 static void btusb_intel_cmd_timeout(struct hci_dev *hdev)
 500 {
 501         struct btusb_data *data = hci_get_drvdata(hdev);
 502         struct gpio_desc *reset_gpio = data->reset_gpio;
 503
 504         if (++data->cmd_timeout_cnt < 5)
 505                 return;
 506
 507         if (!reset_gpio) {
 508                 bt_dev_err(hdev, "No way to reset. Ignoring and continuing");
 509                 return;
 510         }
 511
 512         /*
 513          * Toggle the hard reset line if the platform provides one. The reset
 514          * is going to yank the device off the USB and then replug. So doing
 515          * once is enough. The cleanup is handled correctly on the way out
 516          * (standard USB disconnect), and the new device is detected cleanly
 517          * and bound to the driver again like it should be.
 518          */
 519         if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
 520                 bt_dev_err(hdev, "last reset failed? Not resetting again");
 521                 return;
 522         }
 523
 524         bt_dev_err(hdev, "Initiating HW reset via gpio");
 525         gpiod_set_value_cansleep(reset_gpio, 1);
 526         msleep(100);
 527         gpiod_set_value_cansleep(reset_gpio, 0);
 528 }
 529
 530 static void btusb_rtl_cmd_timeout(struct hci_dev *hdev)
 531 {
 532         struct btusb_data *data = hci_get_drvdata(hdev);
 533         struct gpio_desc *reset_gpio = data->reset_gpio;
 534
 535         if (++data->cmd_timeout_cnt < 5)
 536                 return;
 537
 538         if (!reset_gpio) {
 539                 bt_dev_err(hdev, "No gpio to reset Realtek device, ignoring");
 540                 return;
 541         }
 542
 543         /* Toggle the hard reset line. The Realtek device is going to
 544          * yank itself off the USB and then replug. The cleanup is handled
 545          * correctly on the way out (standard USB disconnect), and the new
 546          * device is detected cleanly and bound to the driver again like
 547          * it should be.
 548          */
 549         if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
 550                 bt_dev_err(hdev, "last reset failed? Not resetting again");
 551                 return;
 552         }
 553
 554         bt_dev_err(hdev, "Reset Realtek device via gpio");
 555         gpiod_set_value_cansleep(reset_gpio, 0);
 556         msleep(200);
 557         gpiod_set_value_cansleep(reset_gpio, 1);
 558 }
 559
 560 static inline void btusb_free_frags(struct btusb_data *data)
 561 {
 562         unsigned long flags;
 563
 564         spin_lock_irqsave(&data->rxlock, flags);
 565
 566         kfree_skb(data->evt_skb);
 567         data->evt_skb = NULL;
 568
 569         kfree_skb(data->acl_skb);
 570         data->acl_skb = NULL;
 571
 572         kfree_skb(data->sco_skb);
 573         data->sco_skb = NULL;
 574
 575         spin_unlock_irqrestore(&data->rxlock, flags);
 576 }
 577
 578 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
 579 {
 580         struct sk_buff *skb;
 581         unsigned long flags;
 582         int err = 0;
 583
 584         spin_lock_irqsave(&data->rxlock, flags);
 585         skb = data->evt_skb;
 586
 587         while (count) {
 588                 int len;
 589
 590                 if (!skb) {
 591                         skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
 592                         if (!skb) {
 593                                 err = -ENOMEM;
 594                                 break;
 595                         }
 596
 597                         hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
 598                         hci_skb_expect(skb) = HCI_EVENT_HDR_SIZE;
 599                 }
 600
 601                 len = min_t(uint, hci_skb_expect(skb), count);
 602                 skb_put_data(skb, buffer, len);
 603
 604                 count -= len;
 605                 buffer += len;
 606                 hci_skb_expect(skb) -= len;
 607
 608                 if (skb->len == HCI_EVENT_HDR_SIZE) {
 609                         /* Complete event header */
 610                         hci_skb_expect(skb) = hci_event_hdr(skb)->plen;
 611
 612                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 613                                 kfree_skb(skb);
 614                                 skb = NULL;
 615
 616                                 err = -EILSEQ;
 617                                 break;
 618                         }
 619                 }
 620
 621                 if (!hci_skb_expect(skb)) {
 622                         /* Complete frame */
 623                         data->recv_event(data->hdev, skb);
 624                         skb = NULL;
 625                 }
 626         }
 627
 628         data->evt_skb = skb;
 629         spin_unlock_irqrestore(&data->rxlock, flags);
 630
 631         return err;
 632 }
 633
 634 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
 635 {
 636         struct sk_buff *skb;
 637         unsigned long flags;
 638         int err = 0;
 639
 640         spin_lock_irqsave(&data->rxlock, flags);
 641         skb = data->acl_skb;
 642
 643         while (count) {
 644                 int len;
 645
 646                 if (!skb) {
 647                         skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
 648                         if (!skb) {
 649                                 err = -ENOMEM;
 650                                 break;
 651                         }
 652
 653                         hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT;
 654                         hci_skb_expect(skb) = HCI_ACL_HDR_SIZE;
 655                 }
 656
 657                 len = min_t(uint, hci_skb_expect(skb), count);
 658                 skb_put_data(skb, buffer, len);
 659
 660                 count -= len;
 661                 buffer += len;
 662                 hci_skb_expect(skb) -= len;
 663
 664                 if (skb->len == HCI_ACL_HDR_SIZE) {
 665                         __le16 dlen = hci_acl_hdr(skb)->dlen;
 666
 667                         /* Complete ACL header */
 668                         hci_skb_expect(skb) = __le16_to_cpu(dlen);
 669
 670                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 671                                 kfree_skb(skb);
 672                                 skb = NULL;
 673
 674                                 err = -EILSEQ;
 675                                 break;
 676                         }
 677                 }
 678
 679                 if (!hci_skb_expect(skb)) {
 680                         /* Complete frame */
 681                         hci_recv_frame(data->hdev, skb);
 682                         skb = NULL;
 683                 }
 684         }
 685
 686         data->acl_skb = skb;
 687         spin_unlock_irqrestore(&data->rxlock, flags);
 688
 689         return err;
 690 }
 691
 692 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
 693 {
 694         struct sk_buff *skb;
 695         unsigned long flags;
 696         int err = 0;
 697
 698         spin_lock_irqsave(&data->rxlock, flags);
 699         skb = data->sco_skb;
 700
 701         while (count) {
 702                 int len;
 703
 704                 if (!skb) {
 705                         skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
 706                         if (!skb) {
 707                                 err = -ENOMEM;
 708                                 break;
 709                         }
 710
 711                         hci_skb_pkt_type(skb) = HCI_SCODATA_PKT;
 712                         hci_skb_expect(skb) = HCI_SCO_HDR_SIZE;
 713                 }
 714
 715                 len = min_t(uint, hci_skb_expect(skb), count);
 716                 skb_put_data(skb, buffer, len);
 717
 718                 count -= len;
 719                 buffer += len;
 720                 hci_skb_expect(skb) -= len;
 721
 722                 if (skb->len == HCI_SCO_HDR_SIZE) {
 723                         /* Complete SCO header */
 724                         hci_skb_expect(skb) = hci_sco_hdr(skb)->dlen;
 725
 726                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 727                                 kfree_skb(skb);
 728                                 skb = NULL;
 729
 730                                 err = -EILSEQ;
 731                                 break;
 732                         }
 733                 }
 734
 735                 if (!hci_skb_expect(skb)) {
 736                         /* Complete frame */
 737                         hci_recv_frame(data->hdev, skb);
 738                         skb = NULL;
 739                 }
 740         }
 741
 742         data->sco_skb = skb;
 743         spin_unlock_irqrestore(&data->rxlock, flags);
 744
 745         return err;
 746 }
 747
 748 static void btusb_intr_complete(struct urb *urb)
 749 {
 750         struct hci_dev *hdev = urb->context;
 751         struct btusb_data *data = hci_get_drvdata(hdev);
 752         int err;
 753
 754         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 755                urb->actual_length);
 756
 757         if (!test_bit(HCI_RUNNING, &hdev->flags))
 758                 return;
 759
 760         if (urb->status == 0) {
 761                 hdev->stat.byte_rx += urb->actual_length;
 762
 763                 if (btusb_recv_intr(data, urb->transfer_buffer,
 764                                     urb->actual_length) < 0) {
 765                         bt_dev_err(hdev, "corrupted event packet");
 766                         hdev->stat.err_rx++;
 767                 }
 768         } else if (urb->status == -ENOENT) {
 769                 /* Avoid suspend failed when usb_kill_urb */
 770                 return;
 771         }
 772
 773         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 774                 return;
 775
 776         usb_mark_last_busy(data->udev);
 777         usb_anchor_urb(urb, &data->intr_anchor);
 778
 779         err = usb_submit_urb(urb, GFP_ATOMIC);
 780         if (err < 0) {
 781                 /* -EPERM: urb is being killed;
 782                  * -ENODEV: device got disconnected
 783                  */
 784                 if (err != -EPERM && err != -ENODEV)
 785                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
 786                                    urb, -err);
 787                 usb_unanchor_urb(urb);
 788         }
 789 }
 790
 791 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 792 {
 793         struct btusb_data *data = hci_get_drvdata(hdev);
 794         struct urb *urb;
 795         unsigned char *buf;
 796         unsigned int pipe;
 797         int err, size;
 798
 799         BT_DBG("%s", hdev->name);
 800
 801         if (!data->intr_ep)
 802                 return -ENODEV;
 803
 804         urb = usb_alloc_urb(0, mem_flags);
 805         if (!urb)
 806                 return -ENOMEM;
 807
 808         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 809
 810         buf = kmalloc(size, mem_flags);
 811         if (!buf) {
 812                 usb_free_urb(urb);
 813                 return -ENOMEM;
 814         }
 815
 816         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 817
 818         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 819                          btusb_intr_complete, hdev, data->intr_ep->bInterval);
 820
 821         urb->transfer_flags |= URB_FREE_BUFFER;
 822
 823         usb_anchor_urb(urb, &data->intr_anchor);
 824
 825         err = usb_submit_urb(urb, mem_flags);
 826         if (err < 0) {
 827                 if (err != -EPERM && err != -ENODEV)
 828                         bt_dev_err(hdev, "urb %p submission failed (%d)",
 829                                    urb, -err);
 830                 usb_unanchor_urb(urb);
 831         }
 832
 833         usb_free_urb(urb);
 834
 835         return err;
 836 }
 837
 838 static void btusb_bulk_complete(struct urb *urb)
 839 {
 840         struct hci_dev *hdev = urb->context;
 841         struct btusb_data *data = hci_get_drvdata(hdev);
 842         int err;
 843
 844         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 845                urb->actual_length);
 846
 847         if (!test_bit(HCI_RUNNING, &hdev->flags))
 848                 return;
 849
 850         if (urb->status == 0) {
 851                 hdev->stat.byte_rx += urb->actual_length;
 852
 853                 if (data->recv_bulk(data, urb->transfer_buffer,
 854                                     urb->actual_length) < 0) {
 855                         bt_dev_err(hdev, "corrupted ACL packet");
 856                         hdev->stat.err_rx++;
 857                 }
 858         } else if (urb->status == -ENOENT) {
 859                 /* Avoid suspend failed when usb_kill_urb */
 860                 return;
 861         }
 862
 863         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 864                 return;
 865
 866         usb_anchor_urb(urb, &data->bulk_anchor);
 867         usb_mark_last_busy(data->udev);
 868
 869         err = usb_submit_urb(urb, GFP_ATOMIC);
 870         if (err < 0) {
 871                 /* -EPERM: urb is being killed;
 872                  * -ENODEV: device got disconnected
 873                  */
 874                 if (err != -EPERM && err != -ENODEV)
 875                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
 876                                    urb, -err);
 877                 usb_unanchor_urb(urb);
 878         }
 879 }
 880
 881 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 882 {
 883         struct btusb_data *data = hci_get_drvdata(hdev);
 884         struct urb *urb;
 885         unsigned char *buf;
 886         unsigned int pipe;
 887         int err, size = HCI_MAX_FRAME_SIZE;
 888
 889         BT_DBG("%s", hdev->name);
 890
 891         if (!data->bulk_rx_ep)
 892                 return -ENODEV;
 893
 894         urb = usb_alloc_urb(0, mem_flags);
 895         if (!urb)
 896                 return -ENOMEM;
 897
 898         buf = kmalloc(size, mem_flags);
 899         if (!buf) {
 900                 usb_free_urb(urb);
 901                 return -ENOMEM;
 902         }
 903
 904         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 905
 906         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
 907                           btusb_bulk_complete, hdev);
 908
 909         urb->transfer_flags |= URB_FREE_BUFFER;
 910
 911         usb_mark_last_busy(data->udev);
 912         usb_anchor_urb(urb, &data->bulk_anchor);
 913
 914         err = usb_submit_urb(urb, mem_flags);
 915         if (err < 0) {
 916                 if (err != -EPERM && err != -ENODEV)
 917                         bt_dev_err(hdev, "urb %p submission failed (%d)",
 918                                    urb, -err);
 919                 usb_unanchor_urb(urb);
 920         }
 921
 922         usb_free_urb(urb);
 923
 924         return err;
 925 }
 926
 927 static void btusb_isoc_complete(struct urb *urb)
 928 {
 929         struct hci_dev *hdev = urb->context;
 930         struct btusb_data *data = hci_get_drvdata(hdev);
 931         int i, err;
 932
 933         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 934                urb->actual_length);
 935
 936         if (!test_bit(HCI_RUNNING, &hdev->flags))
 937                 return;
 938
 939         if (urb->status == 0) {
 940                 for (i = 0; i < urb->number_of_packets; i++) {
 941                         unsigned int offset = urb->iso_frame_desc[i].offset;
 942                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 943
 944                         if (urb->iso_frame_desc[i].status)
 945                                 continue;
 946
 947                         hdev->stat.byte_rx += length;
 948
 949                         if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
 950                                             length) < 0) {
 951                                 bt_dev_err(hdev, "corrupted SCO packet");
 952                                 hdev->stat.err_rx++;
 953                         }
 954                 }
 955         } else if (urb->status == -ENOENT) {
 956                 /* Avoid suspend failed when usb_kill_urb */
 957                 return;
 958         }
 959
 960         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 961                 return;
 962
 963         usb_anchor_urb(urb, &data->isoc_anchor);
 964
 965         err = usb_submit_urb(urb, GFP_ATOMIC);
 966         if (err < 0) {
 967                 /* -EPERM: urb is being killed;
 968                  * -ENODEV: device got disconnected
 969                  */
 970                 if (err != -EPERM && err != -ENODEV)
 971                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
 972                                    urb, -err);
 973                 usb_unanchor_urb(urb);
 974         }
 975 }
 976
 977 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 978 {
 979         int i, offset = 0;
 980
 981         BT_DBG("len %d mtu %d", len, mtu);
 982
 983         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 984                                         i++, offset += mtu, len -= mtu) {
 985                 urb->iso_frame_desc[i].offset = offset;
 986                 urb->iso_frame_desc[i].length = mtu;
 987         }
 988
 989         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 990                 urb->iso_frame_desc[i].offset = offset;
 991                 urb->iso_frame_desc[i].length = len;
 992                 i++;
 993         }
 994
 995         urb->number_of_packets = i;
 996 }
 997
 998 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 999 {
1000         struct btusb_data *data = hci_get_drvdata(hdev);
1001         struct urb *urb;
1002         unsigned char *buf;
1003         unsigned int pipe;
1004         int err, size;
1005
1006         BT_DBG("%s", hdev->name);
1007
1008         if (!data->isoc_rx_ep)
1009                 return -ENODEV;
1010
1011         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
1012         if (!urb)
1013                 return -ENOMEM;
1014
1015         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
1016                                                 BTUSB_MAX_ISOC_FRAMES;
1017
1018         buf = kmalloc(size, mem_flags);
1019         if (!buf) {
1020                 usb_free_urb(urb);
1021                 return -ENOMEM;
1022         }
1023
1024         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
1025
1026         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
1027                          hdev, data->isoc_rx_ep->bInterval);
1028
1029         urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
1030
1031         __fill_isoc_descriptor(urb, size,
1032                                le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
1033
1034         usb_anchor_urb(urb, &data->isoc_anchor);
1035
1036         err = usb_submit_urb(urb, mem_flags);
1037         if (err < 0) {
1038                 if (err != -EPERM && err != -ENODEV)
1039                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1040                                    urb, -err);
1041                 usb_unanchor_urb(urb);
1042         }
1043
1044         usb_free_urb(urb);
1045
1046         return err;
1047 }
1048
1049 static void btusb_diag_complete(struct urb *urb)
1050 {
1051         struct hci_dev *hdev = urb->context;
1052         struct btusb_data *data = hci_get_drvdata(hdev);
1053         int err;
1054
1055         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1056                urb->actual_length);
1057
1058         if (urb->status == 0) {
1059                 struct sk_buff *skb;
1060
1061                 skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC);
1062                 if (skb) {
1063                         skb_put_data(skb, urb->transfer_buffer,
1064                                      urb->actual_length);
1065                         hci_recv_diag(hdev, skb);
1066                 }
1067         } else if (urb->status == -ENOENT) {
1068                 /* Avoid suspend failed when usb_kill_urb */
1069                 return;
1070         }
1071
1072         if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags))
1073                 return;
1074
1075         usb_anchor_urb(urb, &data->diag_anchor);
1076         usb_mark_last_busy(data->udev);
1077
1078         err = usb_submit_urb(urb, GFP_ATOMIC);
1079         if (err < 0) {
1080                 /* -EPERM: urb is being killed;
1081                  * -ENODEV: device got disconnected
1082                  */
1083                 if (err != -EPERM && err != -ENODEV)
1084                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1085                                    urb, -err);
1086                 usb_unanchor_urb(urb);
1087         }
1088 }
1089
1090 static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags)
1091 {
1092         struct btusb_data *data = hci_get_drvdata(hdev);
1093         struct urb *urb;
1094         unsigned char *buf;
1095         unsigned int pipe;
1096         int err, size = HCI_MAX_FRAME_SIZE;
1097
1098         BT_DBG("%s", hdev->name);
1099
1100         if (!data->diag_rx_ep)
1101                 return -ENODEV;
1102
1103         urb = usb_alloc_urb(0, mem_flags);
1104         if (!urb)
1105                 return -ENOMEM;
1106
1107         buf = kmalloc(size, mem_flags);
1108         if (!buf) {
1109                 usb_free_urb(urb);
1110                 return -ENOMEM;
1111         }
1112
1113         pipe = usb_rcvbulkpipe(data->udev, data->diag_rx_ep->bEndpointAddress);
1114
1115         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
1116                           btusb_diag_complete, hdev);
1117
1118         urb->transfer_flags |= URB_FREE_BUFFER;
1119
1120         usb_mark_last_busy(data->udev);
1121         usb_anchor_urb(urb, &data->diag_anchor);
1122
1123         err = usb_submit_urb(urb, mem_flags);
1124         if (err < 0) {
1125                 if (err != -EPERM && err != -ENODEV)
1126                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1127                                    urb, -err);
1128                 usb_unanchor_urb(urb);
1129         }
1130
1131         usb_free_urb(urb);
1132
1133         return err;
1134 }
1135
1136 static void btusb_tx_complete(struct urb *urb)
1137 {
1138         struct sk_buff *skb = urb->context;
1139         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1140         struct btusb_data *data = hci_get_drvdata(hdev);
1141         unsigned long flags;
1142
1143         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1144                urb->actual_length);
1145
1146         if (!test_bit(HCI_RUNNING, &hdev->flags))
1147                 goto done;
1148
1149         if (!urb->status)
1150                 hdev->stat.byte_tx += urb->transfer_buffer_length;
1151         else
1152                 hdev->stat.err_tx++;
1153
1154 done:
1155         spin_lock_irqsave(&data->txlock, flags);
1156         data->tx_in_flight--;
1157         spin_unlock_irqrestore(&data->txlock, flags);
1158
1159         kfree(urb->setup_packet);
1160
1161         kfree_skb(skb);
1162 }
1163
1164 static void btusb_isoc_tx_complete(struct urb *urb)
1165 {
1166         struct sk_buff *skb = urb->context;
1167         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1168
1169         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1170                urb->actual_length);
1171
1172         if (!test_bit(HCI_RUNNING, &hdev->flags))
1173                 goto done;
1174
1175         if (!urb->status)
1176                 hdev->stat.byte_tx += urb->transfer_buffer_length;
1177         else
1178                 hdev->stat.err_tx++;
1179
1180 done:
1181         kfree(urb->setup_packet);
1182
1183         kfree_skb(skb);
1184 }
1185
1186 static int btusb_open(struct hci_dev *hdev)
1187 {
1188         struct btusb_data *data = hci_get_drvdata(hdev);
1189         int err;
1190
1191         BT_DBG("%s", hdev->name);
1192
1193         err = usb_autopm_get_interface(data->intf);
1194         if (err < 0)
1195                 return err;
1196
1197         /* Patching USB firmware files prior to starting any URBs of HCI path
1198          * It is more safe to use USB bulk channel for downloading USB patch
1199          */
1200         if (data->setup_on_usb) {
1201                 err = data->setup_on_usb(hdev);
1202                 if (err < 0)
1203                         goto setup_fail;
1204         }
1205
1206         data->intf->needs_remote_wakeup = 1;
1207
1208         /* Disable device remote wakeup when host is suspended
1209          * For Realtek chips, global suspend without
1210          * SET_FEATURE (DEVICE_REMOTE_WAKEUP) can save more power in device.
1211          */
1212         if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags))
1213                 device_wakeup_disable(&data->udev->dev);
1214
1215         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
1216                 goto done;
1217
1218         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
1219         if (err < 0)
1220                 goto failed;
1221
1222         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1223         if (err < 0) {
1224                 usb_kill_anchored_urbs(&data->intr_anchor);
1225                 goto failed;
1226         }
1227
1228         set_bit(BTUSB_BULK_RUNNING, &data->flags);
1229         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1230
1231         if (data->diag) {
1232                 if (!btusb_submit_diag_urb(hdev, GFP_KERNEL))
1233                         set_bit(BTUSB_DIAG_RUNNING, &data->flags);
1234         }
1235
1236 done:
1237         usb_autopm_put_interface(data->intf);
1238         return 0;
1239
1240 failed:
1241         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1242 setup_fail:
1243         usb_autopm_put_interface(data->intf);
1244         return err;
1245 }
1246
1247 static void btusb_stop_traffic(struct btusb_data *data)
1248 {
1249         usb_kill_anchored_urbs(&data->intr_anchor);
1250         usb_kill_anchored_urbs(&data->bulk_anchor);
1251         usb_kill_anchored_urbs(&data->isoc_anchor);
1252         usb_kill_anchored_urbs(&data->diag_anchor);
1253         usb_kill_anchored_urbs(&data->ctrl_anchor);
1254 }
1255
1256 static int btusb_close(struct hci_dev *hdev)
1257 {
1258         struct btusb_data *data = hci_get_drvdata(hdev);
1259         int err;
1260
1261         BT_DBG("%s", hdev->name);
1262
1263         cancel_work_sync(&data->work);
1264         cancel_work_sync(&data->waker);
1265
1266         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1267         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1268         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1269         clear_bit(BTUSB_DIAG_RUNNING, &data->flags);
1270
1271         btusb_stop_traffic(data);
1272         btusb_free_frags(data);
1273
1274         err = usb_autopm_get_interface(data->intf);
1275         if (err < 0)
1276                 goto failed;
1277
1278         data->intf->needs_remote_wakeup = 0;
1279
1280         /* Enable remote wake up for auto-suspend */
1281         if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags))
1282                 data->intf->needs_remote_wakeup = 1;
1283
1284         usb_autopm_put_interface(data->intf);
1285
1286 failed:
1287         usb_scuttle_anchored_urbs(&data->deferred);
1288         return 0;
1289 }
1290
1291 static int btusb_flush(struct hci_dev *hdev)
1292 {
1293         struct btusb_data *data = hci_get_drvdata(hdev);
1294
1295         BT_DBG("%s", hdev->name);
1296
1297         usb_kill_anchored_urbs(&data->tx_anchor);
1298         btusb_free_frags(data);
1299
1300         return 0;
1301 }
1302
1303 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
1304 {
1305         struct btusb_data *data = hci_get_drvdata(hdev);
1306         struct usb_ctrlrequest *dr;
1307         struct urb *urb;
1308         unsigned int pipe;
1309
1310         urb = usb_alloc_urb(0, GFP_KERNEL);
1311         if (!urb)
1312                 return ERR_PTR(-ENOMEM);
1313
1314         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
1315         if (!dr) {
1316                 usb_free_urb(urb);
1317                 return ERR_PTR(-ENOMEM);
1318         }
1319
1320         dr->bRequestType = data->cmdreq_type;
1321         dr->bRequest     = data->cmdreq;
1322         dr->wIndex       = 0;
1323         dr->wValue       = 0;
1324         dr->wLength      = __cpu_to_le16(skb->len);
1325
1326         pipe = usb_sndctrlpipe(data->udev, 0x00);
1327
1328         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
1329                              skb->data, skb->len, btusb_tx_complete, skb);
1330
1331         skb->dev = (void *)hdev;
1332
1333         return urb;
1334 }
1335
1336 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
1337 {
1338         struct btusb_data *data = hci_get_drvdata(hdev);
1339         struct urb *urb;
1340         unsigned int pipe;
1341
1342         if (!data->bulk_tx_ep)
1343                 return ERR_PTR(-ENODEV);
1344
1345         urb = usb_alloc_urb(0, GFP_KERNEL);
1346         if (!urb)
1347                 return ERR_PTR(-ENOMEM);
1348
1349         pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1350
1351         usb_fill_bulk_urb(urb, data->udev, pipe,
1352                           skb->data, skb->len, btusb_tx_complete, skb);
1353
1354         skb->dev = (void *)hdev;
1355
1356         return urb;
1357 }
1358
1359 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1360 {
1361         struct btusb_data *data = hci_get_drvdata(hdev);
1362         struct urb *urb;
1363         unsigned int pipe;
1364
1365         if (!data->isoc_tx_ep)
1366                 return ERR_PTR(-ENODEV);
1367
1368         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1369         if (!urb)
1370                 return ERR_PTR(-ENOMEM);
1371
1372         pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1373
1374         usb_fill_int_urb(urb, data->udev, pipe,
1375                          skb->data, skb->len, btusb_isoc_tx_complete,
1376                          skb, data->isoc_tx_ep->bInterval);
1377
1378         urb->transfer_flags  = URB_ISO_ASAP;
1379
1380         __fill_isoc_descriptor(urb, skb->len,
1381                                le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1382
1383         skb->dev = (void *)hdev;
1384
1385         return urb;
1386 }
1387
1388 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1389 {
1390         struct btusb_data *data = hci_get_drvdata(hdev);
1391         int err;
1392
1393         usb_anchor_urb(urb, &data->tx_anchor);
1394
1395         err = usb_submit_urb(urb, GFP_KERNEL);
1396         if (err < 0) {
1397                 if (err != -EPERM && err != -ENODEV)
1398                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1399                                    urb, -err);
1400                 kfree(urb->setup_packet);
1401                 usb_unanchor_urb(urb);
1402         } else {
1403                 usb_mark_last_busy(data->udev);
1404         }
1405
1406         usb_free_urb(urb);
1407         return err;
1408 }
1409
1410 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1411 {
1412         struct btusb_data *data = hci_get_drvdata(hdev);
1413         unsigned long flags;
1414         bool suspending;
1415
1416         spin_lock_irqsave(&data->txlock, flags);
1417         suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1418         if (!suspending)
1419                 data->tx_in_flight++;
1420         spin_unlock_irqrestore(&data->txlock, flags);
1421
1422         if (!suspending)
1423                 return submit_tx_urb(hdev, urb);
1424
1425         usb_anchor_urb(urb, &data->deferred);
1426         schedule_work(&data->waker);
1427
1428         usb_free_urb(urb);
1429         return 0;
1430 }
1431
1432 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1433 {
1434         struct urb *urb;
1435
1436         BT_DBG("%s", hdev->name);
1437
1438         switch (hci_skb_pkt_type(skb)) {
1439         case HCI_COMMAND_PKT:
1440                 urb = alloc_ctrl_urb(hdev, skb);
1441                 if (IS_ERR(urb))
1442                         return PTR_ERR(urb);
1443
1444                 hdev->stat.cmd_tx++;
1445                 return submit_or_queue_tx_urb(hdev, urb);
1446
1447         case HCI_ACLDATA_PKT:
1448                 urb = alloc_bulk_urb(hdev, skb);
1449                 if (IS_ERR(urb))
1450                         return PTR_ERR(urb);
1451
1452                 hdev->stat.acl_tx++;
1453                 return submit_or_queue_tx_urb(hdev, urb);
1454
1455         case HCI_SCODATA_PKT:
1456                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1457                         return -ENODEV;
1458
1459                 urb = alloc_isoc_urb(hdev, skb);
1460                 if (IS_ERR(urb))
1461                         return PTR_ERR(urb);
1462
1463                 hdev->stat.sco_tx++;
1464                 return submit_tx_urb(hdev, urb);
1465         }
1466
1467         return -EILSEQ;
1468 }
1469
1470 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1471 {
1472         struct btusb_data *data = hci_get_drvdata(hdev);
1473
1474         BT_DBG("%s evt %d", hdev->name, evt);
1475
1476         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1477                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1478                 schedule_work(&data->work);
1479         }
1480 }
1481
1482 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1483 {
1484         struct btusb_data *data = hci_get_drvdata(hdev);
1485         struct usb_interface *intf = data->isoc;
1486         struct usb_endpoint_descriptor *ep_desc;
1487         int i, err;
1488
1489         if (!data->isoc)
1490                 return -ENODEV;
1491
1492         err = usb_set_interface(data->udev, data->isoc_ifnum, altsetting);
1493         if (err < 0) {
1494                 bt_dev_err(hdev, "setting interface failed (%d)", -err);
1495                 return err;
1496         }
1497
1498         data->isoc_altsetting = altsetting;
1499
1500         data->isoc_tx_ep = NULL;
1501         data->isoc_rx_ep = NULL;
1502
1503         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1504                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1505
1506                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1507                         data->isoc_tx_ep = ep_desc;
1508                         continue;
1509                 }
1510
1511                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1512                         data->isoc_rx_ep = ep_desc;
1513                         continue;
1514                 }
1515         }
1516
1517         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1518                 bt_dev_err(hdev, "invalid SCO descriptors");
1519                 return -ENODEV;
1520         }
1521
1522         return 0;
1523 }
1524
1525 static void btusb_work(struct work_struct *work)
1526 {
1527         struct btusb_data *data = container_of(work, struct btusb_data, work);
1528         struct hci_dev *hdev = data->hdev;
1529         int new_alts;
1530         int err;
1531
1532         if (data->sco_num > 0) {
1533                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1534                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1535                         if (err < 0) {
1536                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1537                                 usb_kill_anchored_urbs(&data->isoc_anchor);
1538                                 return;
1539                         }
1540
1541                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1542                 }
1543
1544                 if (hdev->voice_setting & 0x0020) {
1545                         static const int alts[3] = { 2, 4, 5 };
1546
1547                         new_alts = alts[data->sco_num - 1];
1548                 } else {
1549                         new_alts = data->sco_num;
1550                 }
1551
1552                 if (data->isoc_altsetting != new_alts) {
1553                         unsigned long flags;
1554
1555                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1556                         usb_kill_anchored_urbs(&data->isoc_anchor);
1557
1558                         /* When isochronous alternate setting needs to be
1559                          * changed, because SCO connection has been added
1560                          * or removed, a packet fragment may be left in the
1561                          * reassembling state. This could lead to wrongly
1562                          * assembled fragments.
1563                          *
1564                          * Clear outstanding fragment when selecting a new
1565                          * alternate setting.
1566                          */
1567                         spin_lock_irqsave(&data->rxlock, flags);
1568                         kfree_skb(data->sco_skb);
1569                         data->sco_skb = NULL;
1570                         spin_unlock_irqrestore(&data->rxlock, flags);
1571
1572                         if (__set_isoc_interface(hdev, new_alts) < 0)
1573                                 return;
1574                 }
1575
1576                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1577                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1578                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1579                         else
1580                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1581                 }
1582         } else {
1583                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1584                 usb_kill_anchored_urbs(&data->isoc_anchor);
1585
1586                 __set_isoc_interface(hdev, 0);
1587                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1588                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1589         }
1590 }
1591
1592 static void btusb_waker(struct work_struct *work)
1593 {
1594         struct btusb_data *data = container_of(work, struct btusb_data, waker);
1595         int err;
1596
1597         err = usb_autopm_get_interface(data->intf);
1598         if (err < 0)
1599                 return;
1600
1601         usb_autopm_put_interface(data->intf);
1602 }
1603
1604 static int btusb_setup_bcm92035(struct hci_dev *hdev)
1605 {
1606         struct sk_buff *skb;
1607         u8 val = 0x00;
1608
1609         BT_DBG("%s", hdev->name);
1610
1611         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1612         if (IS_ERR(skb))
1613                 bt_dev_err(hdev, "BCM92035 command failed (%ld)", PTR_ERR(skb));
1614         else
1615                 kfree_skb(skb);
1616
1617         return 0;
1618 }
1619
1620 static int btusb_setup_csr(struct hci_dev *hdev)
1621 {
1622         struct hci_rp_read_local_version *rp;
1623         struct sk_buff *skb;
1624
1625         BT_DBG("%s", hdev->name);
1626
1627         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1628                              HCI_INIT_TIMEOUT);
1629         if (IS_ERR(skb)) {
1630                 int err = PTR_ERR(skb);
1631                 bt_dev_err(hdev, "CSR: Local version failed (%d)", err);
1632                 return err;
1633         }
1634
1635         if (skb->len != sizeof(struct hci_rp_read_local_version)) {
1636                 bt_dev_err(hdev, "CSR: Local version length mismatch");
1637                 kfree_skb(skb);
1638                 return -EIO;
1639         }
1640
1641         rp = (struct hci_rp_read_local_version *)skb->data;
1642
1643         /* Detect controllers which aren't real CSR ones. */
1644         if (le16_to_cpu(rp->manufacturer) != 10 ||
1645             le16_to_cpu(rp->lmp_subver) == 0x0c5c) {
1646                 /* Clear the reset quirk since this is not an actual
1647                  * early Bluetooth 1.1 device from CSR.
1648                  */
1649                 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1650
1651                 /* These fake CSR controllers have all a broken
1652                  * stored link key handling and so just disable it.
1653                  */
1654                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
1655         }
1656
1657         kfree_skb(skb);
1658
1659         return 0;
1660 }
1661
1662 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1663                                                        struct intel_version *ver)
1664 {
1665         const struct firmware *fw;
1666         char fwname[64];
1667         int ret;
1668
1669         snprintf(fwname, sizeof(fwname),
1670                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1671                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
1672                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1673                  ver->fw_build_ww, ver->fw_build_yy);
1674
1675         ret = request_firmware(&fw, fwname, &hdev->dev);
1676         if (ret < 0) {
1677                 if (ret == -EINVAL) {
1678                         bt_dev_err(hdev, "Intel firmware file request failed (%d)",
1679                                    ret);
1680                         return NULL;
1681                 }
1682
1683                 bt_dev_err(hdev, "failed to open Intel firmware file: %s (%d)",
1684                            fwname, ret);
1685
1686                 /* If the correct firmware patch file is not found, use the
1687                  * default firmware patch file instead
1688                  */
1689                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1690                          ver->hw_platform, ver->hw_variant);
1691                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1692                         bt_dev_err(hdev, "failed to open default fw file: %s",
1693                                    fwname);
1694                         return NULL;
1695                 }
1696         }
1697
1698         bt_dev_info(hdev, "Intel Bluetooth firmware file: %s", fwname);
1699
1700         return fw;
1701 }
1702
1703 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1704                                       const struct firmware *fw,
1705                                       const u8 **fw_ptr, int *disable_patch)
1706 {
1707         struct sk_buff *skb;
1708         struct hci_command_hdr *cmd;
1709         const u8 *cmd_param;
1710         struct hci_event_hdr *evt = NULL;
1711         const u8 *evt_param = NULL;
1712         int remain = fw->size - (*fw_ptr - fw->data);
1713
1714         /* The first byte indicates the types of the patch command or event.
1715          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1716          * in the current firmware buffer doesn't start with 0x01 or
1717          * the size of remain buffer is smaller than HCI command header,
1718          * the firmware file is corrupted and it should stop the patching
1719          * process.
1720          */
1721         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1722                 bt_dev_err(hdev, "Intel fw corrupted: invalid cmd read");
1723                 return -EINVAL;
1724         }
1725         (*fw_ptr)++;
1726         remain--;
1727
1728         cmd = (struct hci_command_hdr *)(*fw_ptr);
1729         *fw_ptr += sizeof(*cmd);
1730         remain -= sizeof(*cmd);
1731
1732         /* Ensure that the remain firmware data is long enough than the length
1733          * of command parameter. If not, the firmware file is corrupted.
1734          */
1735         if (remain < cmd->plen) {
1736                 bt_dev_err(hdev, "Intel fw corrupted: invalid cmd len");
1737                 return -EFAULT;
1738         }
1739
1740         /* If there is a command that loads a patch in the firmware
1741          * file, then enable the patch upon success, otherwise just
1742          * disable the manufacturer mode, for example patch activation
1743          * is not required when the default firmware patch file is used
1744          * because there are no patch data to load.
1745          */
1746         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1747                 *disable_patch = 0;
1748
1749         cmd_param = *fw_ptr;
1750         *fw_ptr += cmd->plen;
1751         remain -= cmd->plen;
1752
1753         /* This reads the expected events when the above command is sent to the
1754          * device. Some vendor commands expects more than one events, for
1755          * example command status event followed by vendor specific event.
1756          * For this case, it only keeps the last expected event. so the command
1757          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1758          * last expected event.
1759          */
1760         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1761                 (*fw_ptr)++;
1762                 remain--;
1763
1764                 evt = (struct hci_event_hdr *)(*fw_ptr);
1765                 *fw_ptr += sizeof(*evt);
1766                 remain -= sizeof(*evt);
1767
1768                 if (remain < evt->plen) {
1769                         bt_dev_err(hdev, "Intel fw corrupted: invalid evt len");
1770                         return -EFAULT;
1771                 }
1772
1773                 evt_param = *fw_ptr;
1774                 *fw_ptr += evt->plen;
1775                 remain -= evt->plen;
1776         }
1777
1778         /* Every HCI commands in the firmware file has its correspond event.
1779          * If event is not found or remain is smaller than zero, the firmware
1780          * file is corrupted.
1781          */
1782         if (!evt || !evt_param || remain < 0) {
1783                 bt_dev_err(hdev, "Intel fw corrupted: invalid evt read");
1784                 return -EFAULT;
1785         }
1786
1787         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1788                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1789         if (IS_ERR(skb)) {
1790                 bt_dev_err(hdev, "sending Intel patch command (0x%4.4x) failed (%ld)",
1791                            cmd->opcode, PTR_ERR(skb));
1792                 return PTR_ERR(skb);
1793         }
1794
1795         /* It ensures that the returned event matches the event data read from
1796          * the firmware file. At fist, it checks the length and then
1797          * the contents of the event.
1798          */
1799         if (skb->len != evt->plen) {
1800                 bt_dev_err(hdev, "mismatch event length (opcode 0x%4.4x)",
1801                            le16_to_cpu(cmd->opcode));
1802                 kfree_skb(skb);
1803                 return -EFAULT;
1804         }
1805
1806         if (memcmp(skb->data, evt_param, evt->plen)) {
1807                 bt_dev_err(hdev, "mismatch event parameter (opcode 0x%4.4x)",
1808                            le16_to_cpu(cmd->opcode));
1809                 kfree_skb(skb);
1810                 return -EFAULT;
1811         }
1812         kfree_skb(skb);
1813
1814         return 0;
1815 }
1816
1817 static int btusb_setup_intel(struct hci_dev *hdev)
1818 {
1819         struct sk_buff *skb;
1820         const struct firmware *fw;
1821         const u8 *fw_ptr;
1822         int disable_patch, err;
1823         struct intel_version ver;
1824
1825         BT_DBG("%s", hdev->name);
1826
1827         /* The controller has a bug with the first HCI command sent to it
1828          * returning number of completed commands as zero. This would stall the
1829          * command processing in the Bluetooth core.
1830          *
1831          * As a workaround, send HCI Reset command first which will reset the
1832          * number of completed commands and allow normal command processing
1833          * from now on.
1834          */
1835         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1836         if (IS_ERR(skb)) {
1837                 bt_dev_err(hdev, "sending initial HCI reset command failed (%ld)",
1838                            PTR_ERR(skb));
1839                 return PTR_ERR(skb);
1840         }
1841         kfree_skb(skb);
1842
1843         /* Read Intel specific controller version first to allow selection of
1844          * which firmware file to load.
1845          *
1846          * The returned information are hardware variant and revision plus
1847          * firmware variant, revision and build number.
1848          */
1849         err = btintel_read_version(hdev, &ver);
1850         if (err)
1851                 return err;
1852
1853         bt_dev_info(hdev, "read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1854                     ver.hw_platform, ver.hw_variant, ver.hw_revision,
1855                     ver.fw_variant,  ver.fw_revision, ver.fw_build_num,
1856                     ver.fw_build_ww, ver.fw_build_yy, ver.fw_patch_num);
1857
1858         /* fw_patch_num indicates the version of patch the device currently
1859          * have. If there is no patch data in the device, it is always 0x00.
1860          * So, if it is other than 0x00, no need to patch the device again.
1861          */
1862         if (ver.fw_patch_num) {
1863                 bt_dev_info(hdev, "Intel device is already patched. "
1864                             "patch num: %02x", ver.fw_patch_num);
1865                 goto complete;
1866         }
1867
1868         /* Opens the firmware patch file based on the firmware version read
1869          * from the controller. If it fails to open the matching firmware
1870          * patch file, it tries to open the default firmware patch file.
1871          * If no patch file is found, allow the device to operate without
1872          * a patch.
1873          */
1874         fw = btusb_setup_intel_get_fw(hdev, &ver);
1875         if (!fw)
1876                 goto complete;
1877         fw_ptr = fw->data;
1878
1879         /* Enable the manufacturer mode of the controller.
1880          * Only while this mode is enabled, the driver can download the
1881          * firmware patch data and configuration parameters.
1882          */
1883         err = btintel_enter_mfg(hdev);
1884         if (err) {
1885                 release_firmware(fw);
1886                 return err;
1887         }
1888
1889         disable_patch = 1;
1890
1891         /* The firmware data file consists of list of Intel specific HCI
1892          * commands and its expected events. The first byte indicates the
1893          * type of the message, either HCI command or HCI event.
1894          *
1895          * It reads the command and its expected event from the firmware file,
1896          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1897          * the returned event is compared with the event read from the firmware
1898          * file and it will continue until all the messages are downloaded to
1899          * the controller.
1900          *
1901          * Once the firmware patching is completed successfully,
1902          * the manufacturer mode is disabled with reset and activating the
1903          * downloaded patch.
1904          *
1905          * If the firmware patching fails, the manufacturer mode is
1906          * disabled with reset and deactivating the patch.
1907          *
1908          * If the default patch file is used, no reset is done when disabling
1909          * the manufacturer.
1910          */
1911         while (fw->size > fw_ptr - fw->data) {
1912                 int ret;
1913
1914                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1915                                                  &disable_patch);
1916                 if (ret < 0)
1917                         goto exit_mfg_deactivate;
1918         }
1919
1920         release_firmware(fw);
1921
1922         if (disable_patch)
1923                 goto exit_mfg_disable;
1924
1925         /* Patching completed successfully and disable the manufacturer mode
1926          * with reset and activate the downloaded firmware patches.
1927          */
1928         err = btintel_exit_mfg(hdev, true, true);
1929         if (err)
1930                 return err;
1931
1932         bt_dev_info(hdev, "Intel firmware patch completed and activated");
1933
1934         goto complete;
1935
1936 exit_mfg_disable:
1937         /* Disable the manufacturer mode without reset */
1938         err = btintel_exit_mfg(hdev, false, false);
1939         if (err)
1940                 return err;
1941
1942         bt_dev_info(hdev, "Intel firmware patch completed");
1943
1944         goto complete;
1945
1946 exit_mfg_deactivate:
1947         release_firmware(fw);
1948
1949         /* Patching failed. Disable the manufacturer mode with reset and
1950          * deactivate the downloaded firmware patches.
1951          */
1952         err = btintel_exit_mfg(hdev, true, false);
1953         if (err)
1954                 return err;
1955
1956         bt_dev_info(hdev, "Intel firmware patch completed and deactivated");
1957
1958 complete:
1959         /* Set the event mask for Intel specific vendor events. This enables
1960          * a few extra events that are useful during general operation.
1961          */
1962         btintel_set_event_mask_mfg(hdev, false);
1963
1964         btintel_check_bdaddr(hdev);
1965         return 0;
1966 }
1967
1968 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
1969 {
1970         struct sk_buff *skb;
1971         struct hci_event_hdr *hdr;
1972         struct hci_ev_cmd_complete *evt;
1973
1974         skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_KERNEL);
1975         if (!skb)
1976                 return -ENOMEM;
1977
1978         hdr = skb_put(skb, sizeof(*hdr));
1979         hdr->evt = HCI_EV_CMD_COMPLETE;
1980         hdr->plen = sizeof(*evt) + 1;
1981
1982         evt = skb_put(skb, sizeof(*evt));
1983         evt->ncmd = 0x01;
1984         evt->opcode = cpu_to_le16(opcode);
1985
1986         skb_put_u8(skb, 0x00);
1987
1988         hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
1989
1990         return hci_recv_frame(hdev, skb);
1991 }
1992
1993 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
1994                                  int count)
1995 {
1996         /* When the device is in bootloader mode, then it can send
1997          * events via the bulk endpoint. These events are treated the
1998          * same way as the ones received from the interrupt endpoint.
1999          */
2000         if (test_bit(BTUSB_BOOTLOADER, &data->flags))
2001                 return btusb_recv_intr(data, buffer, count);
2002
2003         return btusb_recv_bulk(data, buffer, count);
2004 }
2005
2006 static void btusb_intel_bootup(struct btusb_data *data, const void *ptr,
2007                                unsigned int len)
2008 {
2009         const struct intel_bootup *evt = ptr;
2010
2011         if (len != sizeof(*evt))
2012                 return;
2013
2014         if (test_and_clear_bit(BTUSB_BOOTING, &data->flags))
2015                 wake_up_bit(&data->flags, BTUSB_BOOTING);
2016 }
2017
2018 static void btusb_intel_secure_send_result(struct btusb_data *data,
2019                                            const void *ptr, unsigned int len)
2020 {
2021         const struct intel_secure_send_result *evt = ptr;
2022
2023         if (len != sizeof(*evt))
2024                 return;
2025
2026         if (evt->result)
2027                 set_bit(BTUSB_FIRMWARE_FAILED, &data->flags);
2028
2029         if (test_and_clear_bit(BTUSB_DOWNLOADING, &data->flags) &&
2030             test_bit(BTUSB_FIRMWARE_LOADED, &data->flags))
2031                 wake_up_bit(&data->flags, BTUSB_DOWNLOADING);
2032 }
2033
2034 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
2035 {
2036         struct btusb_data *data = hci_get_drvdata(hdev);
2037
2038         if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
2039                 struct hci_event_hdr *hdr = (void *)skb->data;
2040
2041                 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
2042                     hdr->plen > 0) {
2043                         const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
2044                         unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
2045
2046                         switch (skb->data[2]) {
2047                         case 0x02:
2048                                 /* When switching to the operational firmware
2049                                  * the device sends a vendor specific event
2050                                  * indicating that the bootup completed.
2051                                  */
2052                                 btusb_intel_bootup(data, ptr, len);
2053                                 break;
2054                         case 0x06:
2055                                 /* When the firmware loading completes the
2056                                  * device sends out a vendor specific event
2057                                  * indicating the result of the firmware
2058                                  * loading.
2059                                  */
2060                                 btusb_intel_secure_send_result(data, ptr, len);
2061                                 break;
2062                         }
2063                 }
2064         }
2065
2066         return hci_recv_frame(hdev, skb);
2067 }
2068
2069 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
2070 {
2071         struct btusb_data *data = hci_get_drvdata(hdev);
2072         struct urb *urb;
2073
2074         BT_DBG("%s", hdev->name);
2075
2076         switch (hci_skb_pkt_type(skb)) {
2077         case HCI_COMMAND_PKT:
2078                 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
2079                         struct hci_command_hdr *cmd = (void *)skb->data;
2080                         __u16 opcode = le16_to_cpu(cmd->opcode);
2081
2082                         /* When in bootloader mode and the command 0xfc09
2083                          * is received, it needs to be send down the
2084                          * bulk endpoint. So allocate a bulk URB instead.
2085                          */
2086                         if (opcode == 0xfc09)
2087                                 urb = alloc_bulk_urb(hdev, skb);
2088                         else
2089                                 urb = alloc_ctrl_urb(hdev, skb);
2090
2091                         /* When the 0xfc01 command is issued to boot into
2092                          * the operational firmware, it will actually not
2093                          * send a command complete event. To keep the flow
2094                          * control working inject that event here.
2095                          */
2096                         if (opcode == 0xfc01)
2097                                 inject_cmd_complete(hdev, opcode);
2098                 } else {
2099                         urb = alloc_ctrl_urb(hdev, skb);
2100                 }
2101                 if (IS_ERR(urb))
2102                         return PTR_ERR(urb);
2103
2104                 hdev->stat.cmd_tx++;
2105                 return submit_or_queue_tx_urb(hdev, urb);
2106
2107         case HCI_ACLDATA_PKT:
2108                 urb = alloc_bulk_urb(hdev, skb);
2109                 if (IS_ERR(urb))
2110                         return PTR_ERR(urb);
2111
2112                 hdev->stat.acl_tx++;
2113                 return submit_or_queue_tx_urb(hdev, urb);
2114
2115         case HCI_SCODATA_PKT:
2116                 if (hci_conn_num(hdev, SCO_LINK) < 1)
2117                         return -ENODEV;
2118
2119                 urb = alloc_isoc_urb(hdev, skb);
2120                 if (IS_ERR(urb))
2121                         return PTR_ERR(urb);
2122
2123                 hdev->stat.sco_tx++;
2124                 return submit_tx_urb(hdev, urb);
2125         }
2126
2127         return -EILSEQ;
2128 }
2129
2130 static bool btusb_setup_intel_new_get_fw_name(struct intel_version *ver,
2131                                              struct intel_boot_params *params,
2132                                              char *fw_name, size_t len,
2133                                              const char *suffix)
2134 {
2135         switch (ver->hw_variant) {
2136         case 0x0b:      /* SfP */
2137         case 0x0c:      /* WsP */
2138                 snprintf(fw_name, len, "intel/ibt-%u-%u.%s",
2139                         le16_to_cpu(ver->hw_variant),
2140                         le16_to_cpu(params->dev_revid),
2141                         suffix);
2142                 break;
2143         case 0x11:      /* JfP */
2144         case 0x12:      /* ThP */
2145         case 0x13:      /* HrP */
2146         case 0x14:      /* CcP */
2147                 snprintf(fw_name, len, "intel/ibt-%u-%u-%u.%s",
2148                         le16_to_cpu(ver->hw_variant),
2149                         le16_to_cpu(ver->hw_revision),
2150                         le16_to_cpu(ver->fw_revision),
2151                         suffix);
2152                 break;
2153         default:
2154                 return false;
2155         }
2156         return true;
2157 }
2158
2159 static int btusb_setup_intel_new(struct hci_dev *hdev)
2160 {
2161         struct btusb_data *data = hci_get_drvdata(hdev);
2162         struct intel_version ver;
2163         struct intel_boot_params params;
2164         const struct firmware *fw;
2165         u32 boot_param;
2166         char fwname[64];
2167         ktime_t calltime, delta, rettime;
2168         unsigned long long duration;
2169         int err;
2170
2171         BT_DBG("%s", hdev->name);
2172
2173         /* Set the default boot parameter to 0x0 and it is updated to
2174          * SKU specific boot parameter after reading Intel_Write_Boot_Params
2175          * command while downloading the firmware.
2176          */
2177         boot_param = 0x00000000;
2178
2179         calltime = ktime_get();
2180
2181         /* Read the Intel version information to determine if the device
2182          * is in bootloader mode or if it already has operational firmware
2183          * loaded.
2184          */
2185         err = btintel_read_version(hdev, &ver);
2186         if (err) {
2187                 bt_dev_err(hdev, "Intel Read version failed (%d)", err);
2188                 btintel_reset_to_bootloader(hdev);
2189                 return err;
2190         }
2191
2192         /* The hardware platform number has a fixed value of 0x37 and
2193          * for now only accept this single value.
2194          */
2195         if (ver.hw_platform != 0x37) {
2196                 bt_dev_err(hdev, "Unsupported Intel hardware platform (%u)",
2197                            ver.hw_platform);
2198                 return -EINVAL;
2199         }
2200
2201         /* Check for supported iBT hardware variants of this firmware
2202          * loading method.
2203          *
2204          * This check has been put in place to ensure correct forward
2205          * compatibility options when newer hardware variants come along.
2206          */
2207         switch (ver.hw_variant) {
2208         case 0x0b:      /* SfP */
2209         case 0x0c:      /* WsP */
2210         case 0x11:      /* JfP */
2211         case 0x12:      /* ThP */
2212         case 0x13:      /* HrP */
2213         case 0x14:      /* CcP */
2214                 break;
2215         default:
2216                 bt_dev_err(hdev, "Unsupported Intel hardware variant (%u)",
2217                            ver.hw_variant);
2218                 return -EINVAL;
2219         }
2220
2221         btintel_version_info(hdev, &ver);
2222
2223         /* The firmware variant determines if the device is in bootloader
2224          * mode or is running operational firmware. The value 0x06 identifies
2225          * the bootloader and the value 0x23 identifies the operational
2226          * firmware.
2227          *
2228          * When the operational firmware is already present, then only
2229          * the check for valid Bluetooth device address is needed. This
2230          * determines if the device will be added as configured or
2231          * unconfigured controller.
2232          *
2233          * It is not possible to use the Secure Boot Parameters in this
2234          * case since that command is only available in bootloader mode.
2235          */
2236         if (ver.fw_variant == 0x23) {
2237                 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2238                 btintel_check_bdaddr(hdev);
2239                 return 0;
2240         }
2241
2242         /* If the device is not in bootloader mode, then the only possible
2243          * choice is to return an error and abort the device initialization.
2244          */
2245         if (ver.fw_variant != 0x06) {
2246                 bt_dev_err(hdev, "Unsupported Intel firmware variant (%u)",
2247                            ver.fw_variant);
2248                 return -ENODEV;
2249         }
2250
2251         /* Read the secure boot parameters to identify the operating
2252          * details of the bootloader.
2253          */
2254         err = btintel_read_boot_params(hdev, &params);
2255         if (err)
2256                 return err;
2257
2258         /* It is required that every single firmware fragment is acknowledged
2259          * with a command complete event. If the boot parameters indicate
2260          * that this bootloader does not send them, then abort the setup.
2261          */
2262         if (params.limited_cce != 0x00) {
2263                 bt_dev_err(hdev, "Unsupported Intel firmware loading method (%u)",
2264                            params.limited_cce);
2265                 return -EINVAL;
2266         }
2267
2268         /* If the OTP has no valid Bluetooth device address, then there will
2269          * also be no valid address for the operational firmware.
2270          */
2271         if (!bacmp(&params.otp_bdaddr, BDADDR_ANY)) {
2272                 bt_dev_info(hdev, "No device address configured");
2273                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2274         }
2275
2276         /* With this Intel bootloader only the hardware variant and device
2277          * revision information are used to select the right firmware for SfP
2278          * and WsP.
2279          *
2280          * The firmware filename is ibt-<hw_variant>-<dev_revid>.sfi.
2281          *
2282          * Currently the supported hardware variants are:
2283          *   11 (0x0b) for iBT3.0 (LnP/SfP)
2284          *   12 (0x0c) for iBT3.5 (WsP)
2285          *
2286          * For ThP/JfP and for future SKU's, the FW name varies based on HW
2287          * variant, HW revision and FW revision, as these are dependent on CNVi
2288          * and RF Combination.
2289          *
2290          *   17 (0x11) for iBT3.5 (JfP)
2291          *   18 (0x12) for iBT3.5 (ThP)
2292          *
2293          * The firmware file name for these will be
2294          * ibt-<hw_variant>-<hw_revision>-<fw_revision>.sfi.
2295          *
2296          */
2297         err = btusb_setup_intel_new_get_fw_name(&ver, &params, fwname,
2298                                                 sizeof(fwname), "sfi");
2299         if (!err) {
2300                 bt_dev_err(hdev, "Unsupported Intel firmware naming");
2301                 return -EINVAL;
2302         }
2303
2304         err = request_firmware(&fw, fwname, &hdev->dev);
2305         if (err < 0) {
2306                 bt_dev_err(hdev, "Failed to load Intel firmware file (%d)", err);
2307                 return err;
2308         }
2309
2310         bt_dev_info(hdev, "Found device firmware: %s", fwname);
2311
2312         /* Save the DDC file name for later use to apply once the firmware
2313          * downloading is done.
2314          */
2315         err = btusb_setup_intel_new_get_fw_name(&ver, &params, fwname,
2316                                                 sizeof(fwname), "ddc");
2317         if (!err) {
2318                 bt_dev_err(hdev, "Unsupported Intel firmware naming");
2319                 return -EINVAL;
2320         }
2321
2322         if (fw->size < 644) {
2323                 bt_dev_err(hdev, "Invalid size of firmware file (%zu)",
2324                            fw->size);
2325                 err = -EBADF;
2326                 goto done;
2327         }
2328
2329         set_bit(BTUSB_DOWNLOADING, &data->flags);
2330
2331         /* Start firmware downloading and get boot parameter */
2332         err = btintel_download_firmware(hdev, fw, &boot_param);
2333         if (err < 0) {
2334                 /* When FW download fails, send Intel Reset to retry
2335                  * FW download.
2336                  */
2337                 btintel_reset_to_bootloader(hdev);
2338                 goto done;
2339         }
2340         set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2341
2342         bt_dev_info(hdev, "Waiting for firmware download to complete");
2343
2344         /* Before switching the device into operational mode and with that
2345          * booting the loaded firmware, wait for the bootloader notification
2346          * that all fragments have been successfully received.
2347          *
2348          * When the event processing receives the notification, then the
2349          * BTUSB_DOWNLOADING flag will be cleared.
2350          *
2351          * The firmware loading should not take longer than 5 seconds
2352          * and thus just timeout if that happens and fail the setup
2353          * of this device.
2354          */
2355         err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
2356                                   TASK_INTERRUPTIBLE,
2357                                   msecs_to_jiffies(5000));
2358         if (err == -EINTR) {
2359                 bt_dev_err(hdev, "Firmware loading interrupted");
2360                 goto done;
2361         }
2362
2363         if (err) {
2364                 bt_dev_err(hdev, "Firmware loading timeout");
2365                 err = -ETIMEDOUT;
2366                 btintel_reset_to_bootloader(hdev);
2367                 goto done;
2368         }
2369
2370         if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) {
2371                 bt_dev_err(hdev, "Firmware loading failed");
2372                 err = -ENOEXEC;
2373                 goto done;
2374         }
2375
2376         rettime = ktime_get();
2377         delta = ktime_sub(rettime, calltime);
2378         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2379
2380         bt_dev_info(hdev, "Firmware loaded in %llu usecs", duration);
2381
2382 done:
2383         release_firmware(fw);
2384
2385         if (err < 0)
2386                 return err;
2387
2388         calltime = ktime_get();
2389
2390         set_bit(BTUSB_BOOTING, &data->flags);
2391
2392         err = btintel_send_intel_reset(hdev, boot_param);
2393         if (err) {
2394                 bt_dev_err(hdev, "Intel Soft Reset failed (%d)", err);
2395                 btintel_reset_to_bootloader(hdev);
2396                 return err;
2397         }
2398
2399         /* The bootloader will not indicate when the device is ready. This
2400          * is done by the operational firmware sending bootup notification.
2401          *
2402          * Booting into operational firmware should not take longer than
2403          * 1 second. However if that happens, then just fail the setup
2404          * since something went wrong.
2405          */
2406         bt_dev_info(hdev, "Waiting for device to boot");
2407
2408         err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING,
2409                                   TASK_INTERRUPTIBLE,
2410                                   msecs_to_jiffies(1000));
2411
2412         if (err == -EINTR) {
2413                 bt_dev_err(hdev, "Device boot interrupted");
2414                 return -EINTR;
2415         }
2416
2417         if (err) {
2418                 bt_dev_err(hdev, "Device boot timeout");
2419                 btintel_reset_to_bootloader(hdev);
2420                 return -ETIMEDOUT;
2421         }
2422
2423         rettime = ktime_get();
2424         delta = ktime_sub(rettime, calltime);
2425         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2426
2427         bt_dev_info(hdev, "Device booted in %llu usecs", duration);
2428
2429         clear_bit(BTUSB_BOOTLOADER, &data->flags);
2430
2431         /* Once the device is running in operational mode, it needs to apply
2432          * the device configuration (DDC) parameters.
2433          *
2434          * The device can work without DDC parameters, so even if it fails
2435          * to load the file, no need to fail the setup.
2436          */
2437         btintel_load_ddc_config(hdev, fwname);
2438
2439         /* Set the event mask for Intel specific vendor events. This enables
2440          * a few extra events that are useful during general operation. It
2441          * does not enable any debugging related events.
2442          *
2443          * The device will function correctly without these events enabled
2444          * and thus no need to fail the setup.
2445          */
2446         btintel_set_event_mask(hdev, false);
2447
2448         /* Read the Intel version information after loading the FW  */
2449         err = btintel_read_version(hdev, &ver);
2450         if (err)
2451                 return err;
2452
2453         btintel_version_info(hdev, &ver);
2454
2455         return 0;
2456 }
2457
2458 static int btusb_shutdown_intel(struct hci_dev *hdev)
2459 {
2460         struct sk_buff *skb;
2461         long ret;
2462
2463         /* In the shutdown sequence where Bluetooth is turned off followed
2464          * by WiFi being turned off, turning WiFi back on causes issue with
2465          * the RF calibration.
2466          *
2467          * To ensure that any RF activity has been stopped, issue HCI Reset
2468          * command to clear all ongoing activity including advertising,
2469          * scanning etc.
2470          */
2471         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2472         if (IS_ERR(skb)) {
2473                 ret = PTR_ERR(skb);
2474                 bt_dev_err(hdev, "HCI reset during shutdown failed");
2475                 return ret;
2476         }
2477         kfree_skb(skb);
2478
2479         /* Some platforms have an issue with BT LED when the interface is
2480          * down or BT radio is turned off, which takes 5 seconds to BT LED
2481          * goes off. This command turns off the BT LED immediately.
2482          */
2483         skb = __hci_cmd_sync(hdev, 0xfc3f, 0, NULL, HCI_INIT_TIMEOUT);
2484         if (IS_ERR(skb)) {
2485                 ret = PTR_ERR(skb);
2486                 bt_dev_err(hdev, "turning off Intel device LED failed");
2487                 return ret;
2488         }
2489         kfree_skb(skb);
2490
2491         return 0;
2492 }
2493
2494 static int btusb_shutdown_intel_new(struct hci_dev *hdev)
2495 {
2496         struct sk_buff *skb;
2497
2498         /* Send HCI Reset to the controller to stop any BT activity which
2499          * were triggered. This will help to save power and maintain the
2500          * sync b/w Host and controller
2501          */
2502         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2503         if (IS_ERR(skb)) {
2504                 bt_dev_err(hdev, "HCI reset during shutdown failed");
2505                 return PTR_ERR(skb);
2506         }
2507         kfree_skb(skb);
2508
2509         return 0;
2510 }
2511
2512 #define FIRMWARE_MT7663         "mediatek/mt7663pr2h.bin"
2513 #define FIRMWARE_MT7668         "mediatek/mt7668pr2h.bin"
2514
2515 #define HCI_WMT_MAX_EVENT_SIZE          64
2516
2517 enum {
2518         BTMTK_WMT_PATCH_DWNLD = 0x1,
2519         BTMTK_WMT_FUNC_CTRL = 0x6,
2520         BTMTK_WMT_RST = 0x7,
2521         BTMTK_WMT_SEMAPHORE = 0x17,
2522 };
2523
2524 enum {
2525         BTMTK_WMT_INVALID,
2526         BTMTK_WMT_PATCH_UNDONE,
2527         BTMTK_WMT_PATCH_DONE,
2528         BTMTK_WMT_ON_UNDONE,
2529         BTMTK_WMT_ON_DONE,
2530         BTMTK_WMT_ON_PROGRESS,
2531 };
2532
2533 struct btmtk_wmt_hdr {
2534         u8      dir;
2535         u8      op;
2536         __le16  dlen;
2537         u8      flag;
2538 } __packed;
2539
2540 struct btmtk_hci_wmt_cmd {
2541         struct btmtk_wmt_hdr hdr;
2542         u8 data[256];
2543 } __packed;
2544
2545 struct btmtk_hci_wmt_evt {
2546         struct hci_event_hdr hhdr;
2547         struct btmtk_wmt_hdr whdr;
2548 } __packed;
2549
2550 struct btmtk_hci_wmt_evt_funcc {
2551         struct btmtk_hci_wmt_evt hwhdr;
2552         __be16 status;
2553 } __packed;
2554
2555 struct btmtk_tci_sleep {
2556         u8 mode;
2557         __le16 duration;
2558         __le16 host_duration;
2559         u8 host_wakeup_pin;
2560         u8 time_compensation;
2561 } __packed;
2562
2563 struct btmtk_hci_wmt_params {
2564         u8 op;
2565         u8 flag;
2566         u16 dlen;
2567         const void *data;
2568         u32 *status;
2569 };
2570
2571 static void btusb_mtk_wmt_recv(struct urb *urb)
2572 {
2573         struct hci_dev *hdev = urb->context;
2574         struct btusb_data *data = hci_get_drvdata(hdev);
2575         struct hci_event_hdr *hdr;
2576         struct sk_buff *skb;
2577         int err;
2578
2579         if (urb->status == 0 && urb->actual_length > 0) {
2580                 hdev->stat.byte_rx += urb->actual_length;
2581
2582                 /* WMT event shouldn't be fragmented and the size should be
2583                  * less than HCI_WMT_MAX_EVENT_SIZE.
2584                  */
2585                 skb = bt_skb_alloc(HCI_WMT_MAX_EVENT_SIZE, GFP_ATOMIC);
2586                 if (!skb) {
2587                         hdev->stat.err_rx++;
2588                         goto err_out;
2589                 }
2590
2591                 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
2592                 skb_put_data(skb, urb->transfer_buffer, urb->actual_length);
2593
2594                 hdr = (void *)skb->data;
2595                 /* Fix up the vendor event id with 0xff for vendor specific
2596                  * instead of 0xe4 so that event send via monitoring socket can
2597                  * be parsed properly.
2598                  */
2599                 hdr->evt = 0xff;
2600
2601                 /* When someone waits for the WMT event, the skb is being cloned
2602                  * and being processed the events from there then.
2603                  */
2604                 if (test_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags)) {
2605                         data->evt_skb = skb_clone(skb, GFP_KERNEL);
2606                         if (!data->evt_skb)
2607                                 goto err_out;
2608                 }
2609
2610                 err = hci_recv_frame(hdev, skb);
2611                 if (err < 0)
2612                         goto err_free_skb;
2613
2614                 if (test_and_clear_bit(BTUSB_TX_WAIT_VND_EVT,
2615                                        &data->flags)) {
2616                         /* Barrier to sync with other CPUs */
2617                         smp_mb__after_atomic();
2618                         wake_up_bit(&data->flags,
2619                                     BTUSB_TX_WAIT_VND_EVT);
2620                 }
2621 err_out:
2622                 return;
2623 err_free_skb:
2624                 kfree_skb(data->evt_skb);
2625                 data->evt_skb = NULL;
2626                 return;
2627         } else if (urb->status == -ENOENT) {
2628                 /* Avoid suspend failed when usb_kill_urb */
2629                 return;
2630         }
2631
2632         usb_mark_last_busy(data->udev);
2633
2634         /* The URB complete handler is still called with urb->actual_length = 0
2635          * when the event is not available, so we should keep re-submitting
2636          * URB until WMT event returns, Also, It's necessary to wait some time
2637          * between the two consecutive control URBs to relax the target device
2638          * to generate the event. Otherwise, the WMT event cannot return from
2639          * the device successfully.
2640          */
2641         udelay(100);
2642
2643         usb_anchor_urb(urb, &data->ctrl_anchor);
2644         err = usb_submit_urb(urb, GFP_ATOMIC);
2645         if (err < 0) {
2646                 /* -EPERM: urb is being killed;
2647                  * -ENODEV: device got disconnected
2648                  */
2649                 if (err != -EPERM && err != -ENODEV)
2650                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
2651                                    urb, -err);
2652                 usb_unanchor_urb(urb);
2653         }
2654 }
2655
2656 static int btusb_mtk_submit_wmt_recv_urb(struct hci_dev *hdev)
2657 {
2658         struct btusb_data *data = hci_get_drvdata(hdev);
2659         struct usb_ctrlrequest *dr;
2660         unsigned char *buf;
2661         int err, size = 64;
2662         unsigned int pipe;
2663         struct urb *urb;
2664
2665         urb = usb_alloc_urb(0, GFP_KERNEL);
2666         if (!urb)
2667                 return -ENOMEM;
2668
2669         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
2670         if (!dr) {
2671                 usb_free_urb(urb);
2672                 return -ENOMEM;
2673         }
2674
2675         dr->bRequestType = USB_TYPE_VENDOR | USB_DIR_IN;
2676         dr->bRequest     = 1;
2677         dr->wIndex       = cpu_to_le16(0);
2678         dr->wValue       = cpu_to_le16(48);
2679         dr->wLength      = cpu_to_le16(size);
2680
2681         buf = kmalloc(size, GFP_KERNEL);
2682         if (!buf) {
2683                 kfree(dr);
2684                 return -ENOMEM;
2685         }
2686
2687         pipe = usb_rcvctrlpipe(data->udev, 0);
2688
2689         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
2690                              buf, size, btusb_mtk_wmt_recv, hdev);
2691
2692         urb->transfer_flags |= URB_FREE_BUFFER;
2693
2694         usb_anchor_urb(urb, &data->ctrl_anchor);
2695         err = usb_submit_urb(urb, GFP_KERNEL);
2696         if (err < 0) {
2697                 if (err != -EPERM && err != -ENODEV)
2698                         bt_dev_err(hdev, "urb %p submission failed (%d)",
2699                                    urb, -err);
2700                 usb_unanchor_urb(urb);
2701         }
2702
2703         usb_free_urb(urb);
2704
2705         return err;
2706 }
2707
2708 static int btusb_mtk_hci_wmt_sync(struct hci_dev *hdev,
2709                                   struct btmtk_hci_wmt_params *wmt_params)
2710 {
2711         struct btusb_data *data = hci_get_drvdata(hdev);
2712         struct btmtk_hci_wmt_evt_funcc *wmt_evt_funcc;
2713         u32 hlen, status = BTMTK_WMT_INVALID;
2714         struct btmtk_hci_wmt_evt *wmt_evt;
2715         struct btmtk_hci_wmt_cmd wc;
2716         struct btmtk_wmt_hdr *hdr;
2717         int err;
2718
2719         /* Submit control IN URB on demand to process the WMT event */
2720         err = btusb_mtk_submit_wmt_recv_urb(hdev);
2721         if (err < 0)
2722                 return err;
2723
2724         /* Send the WMT command and wait until the WMT event returns */
2725         hlen = sizeof(*hdr) + wmt_params->dlen;
2726         if (hlen > 255)
2727                 return -EINVAL;
2728
2729         hdr = (struct btmtk_wmt_hdr *)&wc;
2730         hdr->dir = 1;
2731         hdr->op = wmt_params->op;
2732         hdr->dlen = cpu_to_le16(wmt_params->dlen + 1);
2733         hdr->flag = wmt_params->flag;
2734         memcpy(wc.data, wmt_params->data, wmt_params->dlen);
2735
2736         set_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2737
2738         err = __hci_cmd_send(hdev, 0xfc6f, hlen, &wc);
2739
2740         if (err < 0) {
2741                 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2742                 return err;
2743         }
2744
2745         /* The vendor specific WMT commands are all answered by a vendor
2746          * specific event and will have the Command Status or Command
2747          * Complete as with usual HCI command flow control.
2748          *
2749          * After sending the command, wait for BTUSB_TX_WAIT_VND_EVT
2750          * state to be cleared. The driver specific event receive routine
2751          * will clear that state and with that indicate completion of the
2752          * WMT command.
2753          */
2754         err = wait_on_bit_timeout(&data->flags, BTUSB_TX_WAIT_VND_EVT,
2755                                   TASK_INTERRUPTIBLE, HCI_INIT_TIMEOUT);
2756         if (err == -EINTR) {
2757                 bt_dev_err(hdev, "Execution of wmt command interrupted");
2758                 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2759                 return err;
2760         }
2761
2762         if (err) {
2763                 bt_dev_err(hdev, "Execution of wmt command timed out");
2764                 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2765                 return -ETIMEDOUT;
2766         }
2767
2768         /* Parse and handle the return WMT event */
2769         wmt_evt = (struct btmtk_hci_wmt_evt *)data->evt_skb->data;
2770         if (wmt_evt->whdr.op != hdr->op) {
2771                 bt_dev_err(hdev, "Wrong op received %d expected %d",
2772                            wmt_evt->whdr.op, hdr->op);
2773                 err = -EIO;
2774                 goto err_free_skb;
2775         }
2776
2777         switch (wmt_evt->whdr.op) {
2778         case BTMTK_WMT_SEMAPHORE:
2779                 if (wmt_evt->whdr.flag == 2)
2780                         status = BTMTK_WMT_PATCH_UNDONE;
2781                 else
2782                         status = BTMTK_WMT_PATCH_DONE;
2783                 break;
2784         case BTMTK_WMT_FUNC_CTRL:
2785                 wmt_evt_funcc = (struct btmtk_hci_wmt_evt_funcc *)wmt_evt;
2786                 if (be16_to_cpu(wmt_evt_funcc->status) == 0x404)
2787                         status = BTMTK_WMT_ON_DONE;
2788                 else if (be16_to_cpu(wmt_evt_funcc->status) == 0x420)
2789                         status = BTMTK_WMT_ON_PROGRESS;
2790                 else
2791                         status = BTMTK_WMT_ON_UNDONE;
2792                 break;
2793         }
2794
2795         if (wmt_params->status)
2796                 *wmt_params->status = status;
2797
2798 err_free_skb:
2799         kfree_skb(data->evt_skb);
2800         data->evt_skb = NULL;
2801
2802         return err;
2803 }
2804
2805 static int btusb_mtk_setup_firmware(struct hci_dev *hdev, const char *fwname)
2806 {
2807         struct btmtk_hci_wmt_params wmt_params;
2808         const struct firmware *fw;
2809         const u8 *fw_ptr;
2810         size_t fw_size;
2811         int err, dlen;
2812         u8 flag;
2813
2814         err = request_firmware(&fw, fwname, &hdev->dev);
2815         if (err < 0) {
2816                 bt_dev_err(hdev, "Failed to load firmware file (%d)", err);
2817                 return err;
2818         }
2819
2820         fw_ptr = fw->data;
2821         fw_size = fw->size;
2822
2823         /* The size of patch header is 30 bytes, should be skip */
2824         if (fw_size < 30) {
2825                 err = -EINVAL;
2826                 goto err_release_fw;
2827         }
2828
2829         fw_size -= 30;
2830         fw_ptr += 30;
2831         flag = 1;
2832
2833         wmt_params.op = BTMTK_WMT_PATCH_DWNLD;
2834         wmt_params.status = NULL;
2835
2836         while (fw_size > 0) {
2837                 dlen = min_t(int, 250, fw_size);
2838
2839                 /* Tell deivice the position in sequence */
2840                 if (fw_size - dlen <= 0)
2841                         flag = 3;
2842                 else if (fw_size < fw->size - 30)
2843                         flag = 2;
2844
2845                 wmt_params.flag = flag;
2846                 wmt_params.dlen = dlen;
2847                 wmt_params.data = fw_ptr;
2848
2849                 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2850                 if (err < 0) {
2851                         bt_dev_err(hdev, "Failed to send wmt patch dwnld (%d)",
2852                                    err);
2853                         goto err_release_fw;
2854                 }
2855
2856                 fw_size -= dlen;
2857                 fw_ptr += dlen;
2858         }
2859
2860         wmt_params.op = BTMTK_WMT_RST;
2861         wmt_params.flag = 4;
2862         wmt_params.dlen = 0;
2863         wmt_params.data = NULL;
2864         wmt_params.status = NULL;
2865
2866         /* Activate funciton the firmware providing to */
2867         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2868         if (err < 0) {
2869                 bt_dev_err(hdev, "Failed to send wmt rst (%d)", err);
2870                 return err;
2871         }
2872
2873         /* Wait a few moments for firmware activation done */
2874         usleep_range(10000, 12000);
2875
2876 err_release_fw:
2877         release_firmware(fw);
2878
2879         return err;
2880 }
2881
2882 static int btusb_mtk_func_query(struct hci_dev *hdev)
2883 {
2884         struct btmtk_hci_wmt_params wmt_params;
2885         int status, err;
2886         u8 param = 0;
2887
2888         /* Query whether the function is enabled */
2889         wmt_params.op = BTMTK_WMT_FUNC_CTRL;
2890         wmt_params.flag = 4;
2891         wmt_params.dlen = sizeof(param);
2892         wmt_params.data = &param;
2893         wmt_params.status = &status;
2894
2895         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2896         if (err < 0) {
2897                 bt_dev_err(hdev, "Failed to query function status (%d)", err);
2898                 return err;
2899         }
2900
2901         return status;
2902 }
2903
2904 static int btusb_mtk_reg_read(struct btusb_data *data, u32 reg, u32 *val)
2905 {
2906         int pipe, err, size = sizeof(u32);
2907         void *buf;
2908
2909         buf = kzalloc(size, GFP_KERNEL);
2910         if (!buf)
2911                 return -ENOMEM;
2912
2913         pipe = usb_rcvctrlpipe(data->udev, 0);
2914         err = usb_control_msg(data->udev, pipe, 0x63,
2915                               USB_TYPE_VENDOR | USB_DIR_IN,
2916                               reg >> 16, reg & 0xffff,
2917                               buf, size, USB_CTRL_SET_TIMEOUT);
2918         if (err < 0)
2919                 goto err_free_buf;
2920
2921         *val = get_unaligned_le32(buf);
2922
2923 err_free_buf:
2924         kfree(buf);
2925
2926         return err;
2927 }
2928
2929 static int btusb_mtk_id_get(struct btusb_data *data, u32 *id)
2930 {
2931         return btusb_mtk_reg_read(data, 0x80000008, id);
2932 }
2933
2934 static int btusb_mtk_setup(struct hci_dev *hdev)
2935 {
2936         struct btusb_data *data = hci_get_drvdata(hdev);
2937         struct btmtk_hci_wmt_params wmt_params;
2938         ktime_t calltime, delta, rettime;
2939         struct btmtk_tci_sleep tci_sleep;
2940         unsigned long long duration;
2941         struct sk_buff *skb;
2942         const char *fwname;
2943         int err, status;
2944         u32 dev_id;
2945         u8 param;
2946
2947         calltime = ktime_get();
2948
2949         err = btusb_mtk_id_get(data, &dev_id);
2950         if (err < 0) {
2951                 bt_dev_err(hdev, "Failed to get device id (%d)", err);
2952                 return err;
2953         }
2954
2955         switch (dev_id) {
2956         case 0x7663:
2957                 fwname = FIRMWARE_MT7663;
2958                 break;
2959         case 0x7668:
2960                 fwname = FIRMWARE_MT7668;
2961                 break;
2962         default:
2963                 bt_dev_err(hdev, "Unsupported support hardware variant (%08x)",
2964                            dev_id);
2965                 return -ENODEV;
2966         }
2967
2968         /* Query whether the firmware is already download */
2969         wmt_params.op = BTMTK_WMT_SEMAPHORE;
2970         wmt_params.flag = 1;
2971         wmt_params.dlen = 0;
2972         wmt_params.data = NULL;
2973         wmt_params.status = &status;
2974
2975         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2976         if (err < 0) {
2977                 bt_dev_err(hdev, "Failed to query firmware status (%d)", err);
2978                 return err;
2979         }
2980
2981         if (status == BTMTK_WMT_PATCH_DONE) {
2982                 bt_dev_info(hdev, "firmware already downloaded");
2983                 goto ignore_setup_fw;
2984         }
2985
2986         /* Setup a firmware which the device definitely requires */
2987         err = btusb_mtk_setup_firmware(hdev, fwname);
2988         if (err < 0)
2989                 return err;
2990
2991 ignore_setup_fw:
2992         err = readx_poll_timeout(btusb_mtk_func_query, hdev, status,
2993                                  status < 0 || status != BTMTK_WMT_ON_PROGRESS,
2994                                  2000, 5000000);
2995         /* -ETIMEDOUT happens */
2996         if (err < 0)
2997                 return err;
2998
2999         /* The other errors happen in btusb_mtk_func_query */
3000         if (status < 0)
3001                 return status;
3002
3003         if (status == BTMTK_WMT_ON_DONE) {
3004                 bt_dev_info(hdev, "function already on");
3005                 goto ignore_func_on;
3006         }
3007
3008         /* Enable Bluetooth protocol */
3009         param = 1;
3010         wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3011         wmt_params.flag = 0;
3012         wmt_params.dlen = sizeof(param);
3013         wmt_params.data = &param;
3014         wmt_params.status = NULL;
3015
3016         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3017         if (err < 0) {
3018                 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
3019                 return err;
3020         }
3021
3022 ignore_func_on:
3023         /* Apply the low power environment setup */
3024         tci_sleep.mode = 0x5;
3025         tci_sleep.duration = cpu_to_le16(0x640);
3026         tci_sleep.host_duration = cpu_to_le16(0x640);
3027         tci_sleep.host_wakeup_pin = 0;
3028         tci_sleep.time_compensation = 0;
3029
3030         skb = __hci_cmd_sync(hdev, 0xfc7a, sizeof(tci_sleep), &tci_sleep,
3031                              HCI_INIT_TIMEOUT);
3032         if (IS_ERR(skb)) {
3033                 err = PTR_ERR(skb);
3034                 bt_dev_err(hdev, "Failed to apply low power setting (%d)", err);
3035                 return err;
3036         }
3037         kfree_skb(skb);
3038
3039         rettime = ktime_get();
3040         delta = ktime_sub(rettime, calltime);
3041         duration = (unsigned long long)ktime_to_ns(delta) >> 10;
3042
3043         bt_dev_info(hdev, "Device setup in %llu usecs", duration);
3044
3045         return 0;
3046 }
3047
3048 static int btusb_mtk_shutdown(struct hci_dev *hdev)
3049 {
3050         struct btmtk_hci_wmt_params wmt_params;
3051         u8 param = 0;
3052         int err;
3053
3054         /* Disable the device */
3055         wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3056         wmt_params.flag = 0;
3057         wmt_params.dlen = sizeof(param);
3058         wmt_params.data = &param;
3059         wmt_params.status = NULL;
3060
3061         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3062         if (err < 0) {
3063                 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
3064                 return err;
3065         }
3066
3067         return 0;
3068 }
3069
3070 MODULE_FIRMWARE(FIRMWARE_MT7663);
3071 MODULE_FIRMWARE(FIRMWARE_MT7668);
3072
3073 #ifdef CONFIG_PM
3074 /* Configure an out-of-band gpio as wake-up pin, if specified in device tree */
3075 static int marvell_config_oob_wake(struct hci_dev *hdev)
3076 {
3077         struct sk_buff *skb;
3078         struct btusb_data *data = hci_get_drvdata(hdev);
3079         struct device *dev = &data->udev->dev;
3080         u16 pin, gap, opcode;
3081         int ret;
3082         u8 cmd[5];
3083
3084         /* Move on if no wakeup pin specified */
3085         if (of_property_read_u16(dev->of_node, "marvell,wakeup-pin", &pin) ||
3086             of_property_read_u16(dev->of_node, "marvell,wakeup-gap-ms", &gap))
3087                 return 0;
3088
3089         /* Vendor specific command to configure a GPIO as wake-up pin */
3090         opcode = hci_opcode_pack(0x3F, 0x59);
3091         cmd[0] = opcode & 0xFF;
3092         cmd[1] = opcode >> 8;
3093         cmd[2] = 2; /* length of parameters that follow */
3094         cmd[3] = pin;
3095         cmd[4] = gap; /* time in ms, for which wakeup pin should be asserted */
3096
3097         skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
3098         if (!skb) {
3099                 bt_dev_err(hdev, "%s: No memory\n", __func__);
3100                 return -ENOMEM;
3101         }
3102
3103         skb_put_data(skb, cmd, sizeof(cmd));
3104         hci_skb_pkt_type(skb) = HCI_COMMAND_PKT;
3105
3106         ret = btusb_send_frame(hdev, skb);
3107         if (ret) {
3108                 bt_dev_err(hdev, "%s: configuration failed\n", __func__);
3109                 kfree_skb(skb);
3110                 return ret;
3111         }
3112
3113         return 0;
3114 }
3115 #endif
3116
3117 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
3118                                     const bdaddr_t *bdaddr)
3119 {
3120         struct sk_buff *skb;
3121         u8 buf[8];
3122         long ret;
3123
3124         buf[0] = 0xfe;
3125         buf[1] = sizeof(bdaddr_t);
3126         memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
3127
3128         skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
3129         if (IS_ERR(skb)) {
3130                 ret = PTR_ERR(skb);
3131                 bt_dev_err(hdev, "changing Marvell device address failed (%ld)",
3132                            ret);
3133                 return ret;
3134         }
3135         kfree_skb(skb);
3136
3137         return 0;
3138 }
3139
3140 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
3141                                     const bdaddr_t *bdaddr)
3142 {
3143         struct sk_buff *skb;
3144         u8 buf[10];
3145         long ret;
3146
3147         buf[0] = 0x01;
3148         buf[1] = 0x01;
3149         buf[2] = 0x00;
3150         buf[3] = sizeof(bdaddr_t);
3151         memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
3152
3153         skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
3154         if (IS_ERR(skb)) {
3155                 ret = PTR_ERR(skb);
3156                 bt_dev_err(hdev, "Change address command failed (%ld)", ret);
3157                 return ret;
3158         }
3159         kfree_skb(skb);
3160
3161         return 0;
3162 }
3163
3164 #define QCA_DFU_PACKET_LEN      4096
3165
3166 #define QCA_GET_TARGET_VERSION  0x09
3167 #define QCA_CHECK_STATUS        0x05
3168 #define QCA_DFU_DOWNLOAD        0x01
3169
3170 #define QCA_SYSCFG_UPDATED      0x40
3171 #define QCA_PATCH_UPDATED       0x80
3172 #define QCA_DFU_TIMEOUT         3000
3173
3174 struct qca_version {
3175         __le32  rom_version;
3176         __le32  patch_version;
3177         __le32  ram_version;
3178         __le32  ref_clock;
3179         __u8    reserved[4];
3180 } __packed;
3181
3182 struct qca_rampatch_version {
3183         __le16  rom_version;
3184         __le16  patch_version;
3185 } __packed;
3186
3187 struct qca_device_info {
3188         u32     rom_version;
3189         u8      rampatch_hdr;   /* length of header in rampatch */
3190         u8      nvm_hdr;        /* length of header in NVM */
3191         u8      ver_offset;     /* offset of version structure in rampatch */
3192 };
3193
3194 static const struct qca_device_info qca_devices_table[] = {
3195         { 0x00000100, 20, 4, 10 }, /* Rome 1.0 */
3196         { 0x00000101, 20, 4, 10 }, /* Rome 1.1 */
3197         { 0x00000200, 28, 4, 18 }, /* Rome 2.0 */
3198         { 0x00000201, 28, 4, 18 }, /* Rome 2.1 */
3199         { 0x00000300, 28, 4, 18 }, /* Rome 3.0 */
3200         { 0x00000302, 28, 4, 18 }, /* Rome 3.2 */
3201 };
3202
3203 static int btusb_qca_send_vendor_req(struct usb_device *udev, u8 request,
3204                                      void *data, u16 size)
3205 {
3206         int pipe, err;
3207         u8 *buf;
3208
3209         buf = kmalloc(size, GFP_KERNEL);
3210         if (!buf)
3211                 return -ENOMEM;
3212
3213         /* Found some of USB hosts have IOT issues with ours so that we should
3214          * not wait until HCI layer is ready.
3215          */
3216         pipe = usb_rcvctrlpipe(udev, 0);
3217         err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
3218                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
3219         if (err < 0) {
3220                 dev_err(&udev->dev, "Failed to access otp area (%d)", err);
3221                 goto done;
3222         }
3223
3224         memcpy(data, buf, size);
3225
3226 done:
3227         kfree(buf);
3228
3229         return err;
3230 }
3231
3232 static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
3233                                        const struct firmware *firmware,
3234                                        size_t hdr_size)
3235 {
3236         struct btusb_data *btdata = hci_get_drvdata(hdev);
3237         struct usb_device *udev = btdata->udev;
3238         size_t count, size, sent = 0;
3239         int pipe, len, err;
3240         u8 *buf;
3241
3242         buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
3243         if (!buf)
3244                 return -ENOMEM;
3245
3246         count = firmware->size;
3247
3248         size = min_t(size_t, count, hdr_size);
3249         memcpy(buf, firmware->data, size);
3250
3251         /* USB patches should go down to controller through USB path
3252          * because binary format fits to go down through USB channel.
3253          * USB control path is for patching headers and USB bulk is for
3254          * patch body.
3255          */
3256         pipe = usb_sndctrlpipe(udev, 0);
3257         err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
3258                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
3259         if (err < 0) {
3260                 bt_dev_err(hdev, "Failed to send headers (%d)", err);
3261                 goto done;
3262         }
3263
3264         sent += size;
3265         count -= size;
3266
3267         while (count) {
3268                 size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
3269
3270                 memcpy(buf, firmware->data + sent, size);
3271
3272                 pipe = usb_sndbulkpipe(udev, 0x02);
3273                 err = usb_bulk_msg(udev, pipe, buf, size, &len,
3274                                    QCA_DFU_TIMEOUT);
3275                 if (err < 0) {
3276                         bt_dev_err(hdev, "Failed to send body at %zd of %zd (%d)",
3277                                    sent, firmware->size, err);
3278                         break;
3279                 }
3280
3281                 if (size != len) {
3282                         bt_dev_err(hdev, "Failed to get bulk buffer");
3283                         err = -EILSEQ;
3284                         break;
3285                 }
3286
3287                 sent  += size;
3288                 count -= size;
3289         }
3290
3291 done:
3292         kfree(buf);
3293         return err;
3294 }
3295
3296 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
3297                                          struct qca_version *ver,
3298                                          const struct qca_device_info *info)
3299 {
3300         struct qca_rampatch_version *rver;
3301         const struct firmware *fw;
3302         u32 ver_rom, ver_patch;
3303         u16 rver_rom, rver_patch;
3304         char fwname[64];
3305         int err;
3306
3307         ver_rom = le32_to_cpu(ver->rom_version);
3308         ver_patch = le32_to_cpu(ver->patch_version);
3309
3310         snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom);
3311
3312         err = request_firmware(&fw, fwname, &hdev->dev);
3313         if (err) {
3314                 bt_dev_err(hdev, "failed to request rampatch file: %s (%d)",
3315                            fwname, err);
3316                 return err;
3317         }
3318
3319         bt_dev_info(hdev, "using rampatch file: %s", fwname);
3320
3321         rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
3322         rver_rom = le16_to_cpu(rver->rom_version);
3323         rver_patch = le16_to_cpu(rver->patch_version);
3324
3325         bt_dev_info(hdev, "QCA: patch rome 0x%x build 0x%x, "
3326                     "firmware rome 0x%x build 0x%x",
3327                     rver_rom, rver_patch, ver_rom, ver_patch);
3328
3329         if (rver_rom != ver_rom || rver_patch <= ver_patch) {
3330                 bt_dev_err(hdev, "rampatch file version did not match with firmware");
3331                 err = -EINVAL;
3332                 goto done;
3333         }
3334
3335         err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
3336
3337 done:
3338         release_firmware(fw);
3339
3340         return err;
3341 }
3342
3343 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
3344                                     struct qca_version *ver,
3345                                     const struct qca_device_info *info)
3346 {
3347         const struct firmware *fw;
3348         char fwname[64];
3349         int err;
3350
3351         snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x.bin",
3352                  le32_to_cpu(ver->rom_version));
3353
3354         err = request_firmware(&fw, fwname, &hdev->dev);
3355         if (err) {
3356                 bt_dev_err(hdev, "failed to request NVM file: %s (%d)",
3357                            fwname, err);
3358                 return err;
3359         }
3360
3361         bt_dev_info(hdev, "using NVM file: %s", fwname);
3362
3363         err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
3364
3365         release_firmware(fw);
3366
3367         return err;
3368 }
3369
3370 /* identify the ROM version and check whether patches are needed */
3371 static bool btusb_qca_need_patch(struct usb_device *udev)
3372 {
3373         struct qca_version ver;
3374
3375         if (btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3376                                       sizeof(ver)) < 0)
3377                 return false;
3378         /* only low ROM versions need patches */
3379         return !(le32_to_cpu(ver.rom_version) & ~0xffffU);
3380 }
3381
3382 static int btusb_setup_qca(struct hci_dev *hdev)
3383 {
3384         struct btusb_data *btdata = hci_get_drvdata(hdev);
3385         struct usb_device *udev = btdata->udev;
3386         const struct qca_device_info *info = NULL;
3387         struct qca_version ver;
3388         u32 ver_rom;
3389         u8 status;
3390         int i, err;
3391
3392         err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3393                                         sizeof(ver));
3394         if (err < 0)
3395                 return err;
3396
3397         ver_rom = le32_to_cpu(ver.rom_version);
3398         /* Don't care about high ROM versions */
3399         if (ver_rom & ~0xffffU)
3400                 return 0;
3401
3402         for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
3403                 if (ver_rom == qca_devices_table[i].rom_version)
3404                         info = &qca_devices_table[i];
3405         }
3406         if (!info) {
3407                 bt_dev_err(hdev, "don't support firmware rome 0x%x", ver_rom);
3408                 return -ENODEV;
3409         }
3410
3411         err = btusb_qca_send_vendor_req(udev, QCA_CHECK_STATUS, &status,
3412                                         sizeof(status));
3413         if (err < 0)
3414                 return err;
3415
3416         if (!(status & QCA_PATCH_UPDATED)) {
3417                 err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
3418                 if (err < 0)
3419                         return err;
3420         }
3421
3422         if (!(status & QCA_SYSCFG_UPDATED)) {
3423                 err = btusb_setup_qca_load_nvm(hdev, &ver, info);
3424                 if (err < 0)
3425                         return err;
3426         }
3427
3428         return 0;
3429 }
3430
3431 static inline int __set_diag_interface(struct hci_dev *hdev)
3432 {
3433         struct btusb_data *data = hci_get_drvdata(hdev);
3434         struct usb_interface *intf = data->diag;
3435         int i;
3436
3437         if (!data->diag)
3438                 return -ENODEV;
3439
3440         data->diag_tx_ep = NULL;
3441         data->diag_rx_ep = NULL;
3442
3443         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
3444                 struct usb_endpoint_descriptor *ep_desc;
3445
3446                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
3447
3448                 if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
3449                         data->diag_tx_ep = ep_desc;
3450                         continue;
3451                 }
3452
3453                 if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
3454                         data->diag_rx_ep = ep_desc;
3455                         continue;
3456                 }
3457         }
3458
3459         if (!data->diag_tx_ep || !data->diag_rx_ep) {
3460                 bt_dev_err(hdev, "invalid diagnostic descriptors");
3461                 return -ENODEV;
3462         }
3463
3464         return 0;
3465 }
3466
3467 static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable)
3468 {
3469         struct btusb_data *data = hci_get_drvdata(hdev);
3470         struct sk_buff *skb;
3471         struct urb *urb;
3472         unsigned int pipe;
3473
3474         if (!data->diag_tx_ep)
3475                 return ERR_PTR(-ENODEV);
3476
3477         urb = usb_alloc_urb(0, GFP_KERNEL);
3478         if (!urb)
3479                 return ERR_PTR(-ENOMEM);
3480
3481         skb = bt_skb_alloc(2, GFP_KERNEL);
3482         if (!skb) {
3483                 usb_free_urb(urb);
3484                 return ERR_PTR(-ENOMEM);
3485         }
3486
3487         skb_put_u8(skb, 0xf0);
3488         skb_put_u8(skb, enable);
3489
3490         pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress);
3491
3492         usb_fill_bulk_urb(urb, data->udev, pipe,
3493                           skb->data, skb->len, btusb_tx_complete, skb);
3494
3495         skb->dev = (void *)hdev;
3496
3497         return urb;
3498 }
3499
3500 static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable)
3501 {
3502         struct btusb_data *data = hci_get_drvdata(hdev);
3503         struct urb *urb;
3504
3505         if (!data->diag)
3506                 return -ENODEV;
3507
3508         if (!test_bit(HCI_RUNNING, &hdev->flags))
3509                 return -ENETDOWN;
3510
3511         urb = alloc_diag_urb(hdev, enable);
3512         if (IS_ERR(urb))
3513                 return PTR_ERR(urb);
3514
3515         return submit_or_queue_tx_urb(hdev, urb);
3516 }
3517
3518 #ifdef CONFIG_PM
3519 static irqreturn_t btusb_oob_wake_handler(int irq, void *priv)
3520 {
3521         struct btusb_data *data = priv;
3522
3523         pm_wakeup_event(&data->udev->dev, 0);
3524         pm_system_wakeup();
3525
3526         /* Disable only if not already disabled (keep it balanced) */
3527         if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
3528                 disable_irq_nosync(irq);
3529                 disable_irq_wake(irq);
3530         }
3531         return IRQ_HANDLED;
3532 }
3533
3534 static const struct of_device_id btusb_match_table[] = {
3535         { .compatible = "usb1286,204e" },
3536         { .compatible = "usbcf3,e300" }, /* QCA6174A */
3537         { .compatible = "usb4ca,301a" }, /* QCA6174A (Lite-On) */
3538         { }
3539 };
3540 MODULE_DEVICE_TABLE(of, btusb_match_table);
3541
3542 /* Use an oob wakeup pin? */
3543 static int btusb_config_oob_wake(struct hci_dev *hdev)
3544 {
3545         struct btusb_data *data = hci_get_drvdata(hdev);
3546         struct device *dev = &data->udev->dev;
3547         int irq, ret;
3548
3549         clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
3550
3551         if (!of_match_device(btusb_match_table, dev))
3552                 return 0;
3553
3554         /* Move on if no IRQ specified */
3555         irq = of_irq_get_byname(dev->of_node, "wakeup");
3556         if (irq <= 0) {
3557                 bt_dev_dbg(hdev, "%s: no OOB Wakeup IRQ in DT", __func__);
3558                 return 0;
3559         }
3560
3561         irq_set_status_flags(irq, IRQ_NOAUTOEN);
3562         ret = devm_request_irq(&hdev->dev, irq, btusb_oob_wake_handler,
3563                                0, "OOB Wake-on-BT", data);
3564         if (ret) {
3565                 bt_dev_err(hdev, "%s: IRQ request failed", __func__);
3566                 return ret;
3567         }
3568
3569         ret = device_init_wakeup(dev, true);
3570         if (ret) {
3571                 bt_dev_err(hdev, "%s: failed to init_wakeup", __func__);
3572                 return ret;
3573         }
3574
3575         data->oob_wake_irq = irq;
3576         bt_dev_info(hdev, "OOB Wake-on-BT configured at IRQ %u", irq);
3577         return 0;
3578 }
3579 #endif
3580
3581 static void btusb_check_needs_reset_resume(struct usb_interface *intf)
3582 {
3583         if (dmi_check_system(btusb_needs_reset_resume_table))
3584                 interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME;
3585 }
3586
3587 static int btusb_probe(struct usb_interface *intf,
3588                        const struct usb_device_id *id)
3589 {
3590         struct usb_endpoint_descriptor *ep_desc;
3591         struct gpio_desc *reset_gpio;
3592         struct btusb_data *data;
3593         struct hci_dev *hdev;
3594         unsigned ifnum_base;
3595         int i, err;
3596
3597         BT_DBG("intf %p id %p", intf, id);
3598
3599         /* interface numbers are hardcoded in the spec */
3600         if (intf->cur_altsetting->desc.bInterfaceNumber != 0) {
3601                 if (!(id->driver_info & BTUSB_IFNUM_2))
3602                         return -ENODEV;
3603                 if (intf->cur_altsetting->desc.bInterfaceNumber != 2)
3604                         return -ENODEV;
3605         }
3606
3607         ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber;
3608
3609         if (!id->driver_info) {
3610                 const struct usb_device_id *match;
3611
3612                 match = usb_match_id(intf, blacklist_table);
3613                 if (match)
3614                         id = match;
3615         }
3616
3617         if (id->driver_info == BTUSB_IGNORE)
3618                 return -ENODEV;
3619
3620         if (id->driver_info & BTUSB_ATH3012) {
3621                 struct usb_device *udev = interface_to_usbdev(intf);
3622
3623                 /* Old firmware would otherwise let ath3k driver load
3624                  * patch and sysconfig files
3625                  */
3626                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001 &&
3627                     !btusb_qca_need_patch(udev))
3628                         return -ENODEV;
3629         }
3630
3631         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
3632         if (!data)
3633                 return -ENOMEM;
3634
3635         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
3636                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
3637
3638                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
3639                         data->intr_ep = ep_desc;
3640                         continue;
3641                 }
3642
3643                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
3644                         data->bulk_tx_ep = ep_desc;
3645                         continue;
3646                 }
3647
3648                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
3649                         data->bulk_rx_ep = ep_desc;
3650                         continue;
3651                 }
3652         }
3653
3654         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
3655                 return -ENODEV;
3656
3657         if (id->driver_info & BTUSB_AMP) {
3658                 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
3659                 data->cmdreq = 0x2b;
3660         } else {
3661                 data->cmdreq_type = USB_TYPE_CLASS;
3662                 data->cmdreq = 0x00;
3663         }
3664
3665         data->udev = interface_to_usbdev(intf);
3666         data->intf = intf;
3667
3668         INIT_WORK(&data->work, btusb_work);
3669         INIT_WORK(&data->waker, btusb_waker);
3670         init_usb_anchor(&data->deferred);
3671         init_usb_anchor(&data->tx_anchor);
3672         spin_lock_init(&data->txlock);
3673
3674         init_usb_anchor(&data->intr_anchor);
3675         init_usb_anchor(&data->bulk_anchor);
3676         init_usb_anchor(&data->isoc_anchor);
3677         init_usb_anchor(&data->diag_anchor);
3678         init_usb_anchor(&data->ctrl_anchor);
3679         spin_lock_init(&data->rxlock);
3680
3681         if (id->driver_info & BTUSB_INTEL_NEW) {
3682                 data->recv_event = btusb_recv_event_intel;
3683                 data->recv_bulk = btusb_recv_bulk_intel;
3684                 set_bit(BTUSB_BOOTLOADER, &data->flags);
3685         } else {
3686                 data->recv_event = hci_recv_frame;
3687                 data->recv_bulk = btusb_recv_bulk;
3688         }
3689
3690         hdev = hci_alloc_dev();
3691         if (!hdev)
3692                 return -ENOMEM;
3693
3694         hdev->bus = HCI_USB;
3695         hci_set_drvdata(hdev, data);
3696
3697         if (id->driver_info & BTUSB_AMP)
3698                 hdev->dev_type = HCI_AMP;
3699         else
3700                 hdev->dev_type = HCI_PRIMARY;
3701
3702         data->hdev = hdev;
3703
3704         SET_HCIDEV_DEV(hdev, &intf->dev);
3705
3706         reset_gpio = gpiod_get_optional(&data->udev->dev, "reset",
3707                                         GPIOD_OUT_LOW);
3708         if (IS_ERR(reset_gpio)) {
3709                 err = PTR_ERR(reset_gpio);
3710                 goto out_free_dev;
3711         } else if (reset_gpio) {
3712                 data->reset_gpio = reset_gpio;
3713         }
3714
3715         hdev->open   = btusb_open;
3716         hdev->close  = btusb_close;
3717         hdev->flush  = btusb_flush;
3718         hdev->send   = btusb_send_frame;
3719         hdev->notify = btusb_notify;
3720
3721 #ifdef CONFIG_PM
3722         err = btusb_config_oob_wake(hdev);
3723         if (err)
3724                 goto out_free_dev;
3725
3726         /* Marvell devices may need a specific chip configuration */
3727         if (id->driver_info & BTUSB_MARVELL && data->oob_wake_irq) {
3728                 err = marvell_config_oob_wake(hdev);
3729                 if (err)
3730                         goto out_free_dev;
3731         }
3732 #endif
3733         if (id->driver_info & BTUSB_CW6622)
3734                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
3735
3736         if (id->driver_info & BTUSB_BCM2045)
3737                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
3738
3739         if (id->driver_info & BTUSB_BCM92035)
3740                 hdev->setup = btusb_setup_bcm92035;
3741
3742         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) &&
3743             (id->driver_info & BTUSB_BCM_PATCHRAM)) {
3744                 hdev->manufacturer = 15;
3745                 hdev->setup = btbcm_setup_patchram;
3746                 hdev->set_diag = btusb_bcm_set_diag;
3747                 hdev->set_bdaddr = btbcm_set_bdaddr;
3748
3749                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
3750                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
3751         }
3752
3753         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) &&
3754             (id->driver_info & BTUSB_BCM_APPLE)) {
3755                 hdev->manufacturer = 15;
3756                 hdev->setup = btbcm_setup_apple;
3757                 hdev->set_diag = btusb_bcm_set_diag;
3758
3759                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
3760                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
3761         }
3762
3763         if (id->driver_info & BTUSB_INTEL) {
3764                 hdev->manufacturer = 2;
3765                 hdev->setup = btusb_setup_intel;
3766                 hdev->shutdown = btusb_shutdown_intel;
3767                 hdev->set_diag = btintel_set_diag_mfg;
3768                 hdev->set_bdaddr = btintel_set_bdaddr;
3769                 hdev->cmd_timeout = btusb_intel_cmd_timeout;
3770                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3771                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3772                 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
3773         }
3774
3775         if (id->driver_info & BTUSB_INTEL_NEW) {
3776                 hdev->manufacturer = 2;
3777                 hdev->send = btusb_send_frame_intel;
3778                 hdev->setup = btusb_setup_intel_new;
3779                 hdev->shutdown = btusb_shutdown_intel_new;
3780                 hdev->hw_error = btintel_hw_error;
3781                 hdev->set_diag = btintel_set_diag;
3782                 hdev->set_bdaddr = btintel_set_bdaddr;
3783                 hdev->cmd_timeout = btusb_intel_cmd_timeout;
3784                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3785                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3786                 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
3787         }
3788
3789         if (id->driver_info & BTUSB_MARVELL)
3790                 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
3791
3792         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_MTK) &&
3793             (id->driver_info & BTUSB_MEDIATEK)) {
3794                 hdev->setup = btusb_mtk_setup;
3795                 hdev->shutdown = btusb_mtk_shutdown;
3796                 hdev->manufacturer = 70;
3797                 set_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks);
3798         }
3799
3800         if (id->driver_info & BTUSB_SWAVE) {
3801                 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
3802                 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
3803         }
3804
3805         if (id->driver_info & BTUSB_INTEL_BOOT) {
3806                 hdev->manufacturer = 2;
3807                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3808         }
3809
3810         if (id->driver_info & BTUSB_ATH3012) {
3811                 data->setup_on_usb = btusb_setup_qca;
3812                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
3813                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3814                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3815         }
3816
3817         if (id->driver_info & BTUSB_QCA_ROME) {
3818                 data->setup_on_usb = btusb_setup_qca;
3819                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
3820                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3821                 btusb_check_needs_reset_resume(intf);
3822         }
3823
3824         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_RTL) &&
3825             (id->driver_info & BTUSB_REALTEK)) {
3826                 hdev->setup = btrtl_setup_realtek;
3827                 hdev->shutdown = btrtl_shutdown_realtek;
3828                 hdev->cmd_timeout = btusb_rtl_cmd_timeout;
3829
3830                 /* Realtek devices lose their updated firmware over global
3831                  * suspend that means host doesn't send SET_FEATURE
3832                  * (DEVICE_REMOTE_WAKEUP)
3833                  */
3834                 set_bit(BTUSB_WAKEUP_DISABLE, &data->flags);
3835         }
3836
3837         if (id->driver_info & BTUSB_AMP) {
3838                 /* AMP controllers do not support SCO packets */
3839                 data->isoc = NULL;
3840         } else {
3841                 /* Interface orders are hardcoded in the specification */
3842                 data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1);
3843                 data->isoc_ifnum = ifnum_base + 1;
3844         }
3845
3846         if (!reset)
3847                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3848
3849         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
3850                 if (!disable_scofix)
3851                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
3852         }
3853
3854         if (id->driver_info & BTUSB_BROKEN_ISOC)
3855                 data->isoc = NULL;
3856
3857         if (id->driver_info & BTUSB_DIGIANSWER) {
3858                 data->cmdreq_type = USB_TYPE_VENDOR;
3859                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3860         }
3861
3862         if (id->driver_info & BTUSB_CSR) {
3863                 struct usb_device *udev = data->udev;
3864                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
3865
3866                 /* Old firmware would otherwise execute USB reset */
3867                 if (bcdDevice < 0x117)
3868                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3869
3870                 /* Fake CSR devices with broken commands */
3871                 if (bcdDevice <= 0x100 || bcdDevice == 0x134)
3872                         hdev->setup = btusb_setup_csr;
3873
3874                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3875         }
3876
3877         if (id->driver_info & BTUSB_SNIFFER) {
3878                 struct usb_device *udev = data->udev;
3879
3880                 /* New sniffer firmware has crippled HCI interface */
3881                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
3882                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3883         }
3884
3885         if (id->driver_info & BTUSB_INTEL_BOOT) {
3886                 /* A bug in the bootloader causes that interrupt interface is
3887                  * only enabled after receiving SetInterface(0, AltSetting=0).
3888                  */
3889                 err = usb_set_interface(data->udev, 0, 0);
3890                 if (err < 0) {
3891                         BT_ERR("failed to set interface 0, alt 0 %d", err);
3892                         goto out_free_dev;
3893                 }
3894         }
3895
3896         if (data->isoc) {
3897                 err = usb_driver_claim_interface(&btusb_driver,
3898                                                  data->isoc, data);
3899                 if (err < 0)
3900                         goto out_free_dev;
3901         }
3902
3903         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) && data->diag) {
3904                 if (!usb_driver_claim_interface(&btusb_driver,
3905                                                 data->diag, data))
3906                         __set_diag_interface(hdev);
3907                 else
3908                         data->diag = NULL;
3909         }
3910
3911         if (enable_autosuspend)
3912                 usb_enable_autosuspend(data->udev);
3913
3914         err = hci_register_dev(hdev);
3915         if (err < 0)
3916                 goto out_free_dev;
3917
3918         usb_set_intfdata(intf, data);
3919
3920         return 0;
3921
3922 out_free_dev:
3923         if (data->reset_gpio)
3924                 gpiod_put(data->reset_gpio);
3925         hci_free_dev(hdev);
3926         return err;
3927 }
3928
3929 static void btusb_disconnect(struct usb_interface *intf)
3930 {
3931         struct btusb_data *data = usb_get_intfdata(intf);
3932         struct hci_dev *hdev;
3933
3934         BT_DBG("intf %p", intf);
3935
3936         if (!data)
3937                 return;
3938
3939         hdev = data->hdev;
3940         usb_set_intfdata(data->intf, NULL);
3941
3942         if (data->isoc)
3943                 usb_set_intfdata(data->isoc, NULL);
3944
3945         if (data->diag)
3946                 usb_set_intfdata(data->diag, NULL);
3947
3948         hci_unregister_dev(hdev);
3949
3950         if (intf == data->intf) {
3951                 if (data->isoc)
3952                         usb_driver_release_interface(&btusb_driver, data->isoc);
3953                 if (data->diag)
3954                         usb_driver_release_interface(&btusb_driver, data->diag);
3955         } else if (intf == data->isoc) {
3956                 if (data->diag)
3957                         usb_driver_release_interface(&btusb_driver, data->diag);
3958                 usb_driver_release_interface(&btusb_driver, data->intf);
3959         } else if (intf == data->diag) {
3960                 usb_driver_release_interface(&btusb_driver, data->intf);
3961                 if (data->isoc)
3962                         usb_driver_release_interface(&btusb_driver, data->isoc);
3963         }
3964
3965         if (data->oob_wake_irq)
3966                 device_init_wakeup(&data->udev->dev, false);
3967
3968         if (data->reset_gpio)
3969                 gpiod_put(data->reset_gpio);
3970
3971         hci_free_dev(hdev);
3972 }
3973
3974 #ifdef CONFIG_PM
3975 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
3976 {
3977         struct btusb_data *data = usb_get_intfdata(intf);
3978
3979         BT_DBG("intf %p", intf);
3980
3981         if (data->suspend_count++)
3982                 return 0;
3983
3984         spin_lock_irq(&data->txlock);
3985         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
3986                 set_bit(BTUSB_SUSPENDING, &data->flags);
3987                 spin_unlock_irq(&data->txlock);
3988         } else {
3989                 spin_unlock_irq(&data->txlock);
3990                 data->suspend_count--;
3991                 return -EBUSY;
3992         }
3993
3994         cancel_work_sync(&data->work);
3995
3996         btusb_stop_traffic(data);
3997         usb_kill_anchored_urbs(&data->tx_anchor);
3998
3999         if (data->oob_wake_irq && device_may_wakeup(&data->udev->dev)) {
4000                 set_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
4001                 enable_irq_wake(data->oob_wake_irq);
4002                 enable_irq(data->oob_wake_irq);
4003         }
4004
4005         /* For global suspend, Realtek devices lose the loaded fw
4006          * in them. But for autosuspend, firmware should remain.
4007          * Actually, it depends on whether the usb host sends
4008          * set feature (enable wakeup) or not.
4009          */
4010         if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags)) {
4011                 if (PMSG_IS_AUTO(message) &&
4012                     device_can_wakeup(&data->udev->dev))
4013                         data->udev->do_remote_wakeup = 1;
4014                 else if (!PMSG_IS_AUTO(message))
4015                         data->udev->reset_resume = 1;
4016         }
4017
4018         return 0;
4019 }
4020
4021 static void play_deferred(struct btusb_data *data)
4022 {
4023         struct urb *urb;
4024         int err;
4025
4026         while ((urb = usb_get_from_anchor(&data->deferred))) {
4027                 usb_anchor_urb(urb, &data->tx_anchor);
4028
4029                 err = usb_submit_urb(urb, GFP_ATOMIC);
4030                 if (err < 0) {
4031                         if (err != -EPERM && err != -ENODEV)
4032                                 BT_ERR("%s urb %p submission failed (%d)",
4033                                        data->hdev->name, urb, -err);
4034                         kfree(urb->setup_packet);
4035                         usb_unanchor_urb(urb);
4036                         usb_free_urb(urb);
4037                         break;
4038                 }
4039
4040                 data->tx_in_flight++;
4041                 usb_free_urb(urb);
4042         }
4043
4044         /* Cleanup the rest deferred urbs. */
4045         while ((urb = usb_get_from_anchor(&data->deferred))) {
4046                 kfree(urb->setup_packet);
4047                 usb_free_urb(urb);
4048         }
4049 }
4050
4051 static int btusb_resume(struct usb_interface *intf)
4052 {
4053         struct btusb_data *data = usb_get_intfdata(intf);
4054         struct hci_dev *hdev = data->hdev;
4055         int err = 0;
4056
4057         BT_DBG("intf %p", intf);
4058
4059         if (--data->suspend_count)
4060                 return 0;
4061
4062         /* Disable only if not already disabled (keep it balanced) */
4063         if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
4064                 disable_irq(data->oob_wake_irq);
4065                 disable_irq_wake(data->oob_wake_irq);
4066         }
4067
4068         if (!test_bit(HCI_RUNNING, &hdev->flags))
4069                 goto done;
4070
4071         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
4072                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
4073                 if (err < 0) {
4074                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
4075                         goto failed;
4076                 }
4077         }
4078
4079         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
4080                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
4081                 if (err < 0) {
4082                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
4083                         goto failed;
4084                 }
4085
4086                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
4087         }
4088
4089         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
4090                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
4091                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
4092                 else
4093                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
4094         }
4095
4096         spin_lock_irq(&data->txlock);
4097         play_deferred(data);
4098         clear_bit(BTUSB_SUSPENDING, &data->flags);
4099         spin_unlock_irq(&data->txlock);
4100         schedule_work(&data->work);
4101
4102         return 0;
4103
4104 failed:
4105         usb_scuttle_anchored_urbs(&data->deferred);
4106 done:
4107         spin_lock_irq(&data->txlock);
4108         clear_bit(BTUSB_SUSPENDING, &data->flags);
4109         spin_unlock_irq(&data->txlock);
4110
4111         return err;
4112 }
4113 #endif
4114
4115 static struct usb_driver btusb_driver = {
4116         .name           = "btusb",
4117         .probe          = btusb_probe,
4118         .disconnect     = btusb_disconnect,
4119 #ifdef CONFIG_PM
4120         .suspend        = btusb_suspend,
4121         .resume         = btusb_resume,
4122 #endif
4123         .id_table       = btusb_table,
4124         .supports_autosuspend = 1,
4125         .disable_hub_initiated_lpm = 1,
4126 };
4127
4128 module_usb_driver(btusb_driver);
4129
4130 module_param(disable_scofix, bool, 0644);
4131 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
4132
4133 module_param(force_scofix, bool, 0644);
4134 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
4135
4136 module_param(enable_autosuspend, bool, 0644);
4137 MODULE_PARM_DESC(enable_autosuspend, "Enable USB autosuspend by default");
4138
4139 module_param(reset, bool, 0644);
4140 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
4141
4142 MODULE_AUTHOR("Marcel Holtmann <[email protected]>");
4143 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
4144 MODULE_VERSION(VERSION);
4145 MODULE_LICENSE("GPL");