drivers/bluetooth/btusb.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  *
   4  *  Generic Bluetooth USB driver
   5  *
   6  *  Copyright (C) 2005-2008  Marcel Holtmann <marcel@holtmann.org>
   7  */
   8
   9 #include <linux/dmi.h>
  10 #include <linux/module.h>
  11 #include <linux/usb.h>
  12 #include <linux/usb/quirks.h>
  13 #include <linux/firmware.h>
  14 #include <linux/iopoll.h>
  15 #include <linux/of_device.h>
  16 #include <linux/of_irq.h>
  17 #include <linux/suspend.h>
  18 #include <linux/gpio/consumer.h>
  19 #include <asm/unaligned.h>
  20
  21 #include <net/bluetooth/bluetooth.h>
  22 #include <net/bluetooth/hci_core.h>
  23
  24 #include "btintel.h"
  25 #include "btbcm.h"
  26 #include "btrtl.h"
  27
  28 #define VERSION "0.8"
  29
  30 static bool disable_scofix;
  31 static bool force_scofix;
  32 static bool enable_autosuspend = IS_ENABLED(CONFIG_BT_HCIBTUSB_AUTOSUSPEND);
  33
  34 static bool reset = true;
  35
  36 static struct usb_driver btusb_driver;
  37
  38 #define BTUSB_IGNORE            0x01
  39 #define BTUSB_DIGIANSWER        0x02
  40 #define BTUSB_CSR               0x04
  41 #define BTUSB_SNIFFER           0x08
  42 #define BTUSB_BCM92035          0x10
  43 #define BTUSB_BROKEN_ISOC       0x20
  44 #define BTUSB_WRONG_SCO_MTU     0x40
  45 #define BTUSB_ATH3012           0x80
  46 #define BTUSB_INTEL             0x100
  47 #define BTUSB_INTEL_BOOT        0x200
  48 #define BTUSB_BCM_PATCHRAM      0x400
  49 #define BTUSB_MARVELL           0x800
  50 #define BTUSB_SWAVE             0x1000
  51 #define BTUSB_INTEL_NEW         0x2000
  52 #define BTUSB_AMP               0x4000
  53 #define BTUSB_QCA_ROME          0x8000
  54 #define BTUSB_BCM_APPLE         0x10000
  55 #define BTUSB_REALTEK           0x20000
  56 #define BTUSB_BCM2045           0x40000
  57 #define BTUSB_IFNUM_2           0x80000
  58 #define BTUSB_CW6622            0x100000
  59 #define BTUSB_MEDIATEK          0x200000
  60 #define BTUSB_WIDEBAND_SPEECH   0x400000
  61 #define BTUSB_VALID_LE_STATES   0x800000
  62 #define BTUSB_QCA_WCN6855       0x1000000
  63 #define BTUSB_INTEL_NEWGEN      0x2000000
  64
  65 static const struct usb_device_id btusb_table[] = {
  66         /* Generic Bluetooth USB device */
  67         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  68
  69         /* Generic Bluetooth AMP device */
  70         { USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP },
  71
  72         /* Generic Bluetooth USB interface */
  73         { USB_INTERFACE_INFO(0xe0, 0x01, 0x01) },
  74
  75         /* Apple-specific (Broadcom) devices */
  76         { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01),
  77           .driver_info = BTUSB_BCM_APPLE | BTUSB_IFNUM_2 },
  78
  79         /* MediaTek MT76x0E */
  80         { USB_DEVICE(0x0e8d, 0x763f) },
  81
  82         /* Broadcom SoftSailing reporting vendor specific */
  83         { USB_DEVICE(0x0a5c, 0x21e1) },
  84
  85         /* Apple MacBookPro 7,1 */
  86         { USB_DEVICE(0x05ac, 0x8213) },
  87
  88         /* Apple iMac11,1 */
  89         { USB_DEVICE(0x05ac, 0x8215) },
  90
  91         /* Apple MacBookPro6,2 */
  92         { USB_DEVICE(0x05ac, 0x8218) },
  93
  94         /* Apple MacBookAir3,1, MacBookAir3,2 */
  95         { USB_DEVICE(0x05ac, 0x821b) },
  96
  97         /* Apple MacBookAir4,1 */
  98         { USB_DEVICE(0x05ac, 0x821f) },
  99
 100         /* Apple MacBookPro8,2 */
 101         { USB_DEVICE(0x05ac, 0x821a) },
 102
 103         /* Apple MacMini5,1 */
 104         { USB_DEVICE(0x05ac, 0x8281) },
 105
 106         /* AVM BlueFRITZ! USB v2.0 */
 107         { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE },
 108
 109         /* Bluetooth Ultraport Module from IBM */
 110         { USB_DEVICE(0x04bf, 0x030a) },
 111
 112         /* ALPS Modules with non-standard id */
 113         { USB_DEVICE(0x044e, 0x3001) },
 114         { USB_DEVICE(0x044e, 0x3002) },
 115
 116         /* Ericsson with non-standard id */
 117         { USB_DEVICE(0x0bdb, 0x1002) },
 118
 119         /* Canyon CN-BTU1 with HID interfaces */
 120         { USB_DEVICE(0x0c10, 0x0000) },
 121
 122         /* Broadcom BCM20702A0 */
 123         { USB_DEVICE(0x413c, 0x8197) },
 124
 125         /* Broadcom BCM20702B0 (Dynex/Insignia) */
 126         { USB_DEVICE(0x19ff, 0x0239), .driver_info = BTUSB_BCM_PATCHRAM },
 127
 128         /* Broadcom BCM43142A0 (Foxconn/Lenovo) */
 129         { USB_VENDOR_AND_INTERFACE_INFO(0x105b, 0xff, 0x01, 0x01),
 130           .driver_info = BTUSB_BCM_PATCHRAM },
 131
 132         /* Broadcom BCM920703 (HTC Vive) */
 133         { USB_VENDOR_AND_INTERFACE_INFO(0x0bb4, 0xff, 0x01, 0x01),
 134           .driver_info = BTUSB_BCM_PATCHRAM },
 135
 136         /* Foxconn - Hon Hai */
 137         { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01),
 138           .driver_info = BTUSB_BCM_PATCHRAM },
 139
 140         /* Lite-On Technology - Broadcom based */
 141         { USB_VENDOR_AND_INTERFACE_INFO(0x04ca, 0xff, 0x01, 0x01),
 142           .driver_info = BTUSB_BCM_PATCHRAM },
 143
 144         /* Broadcom devices with vendor specific id */
 145         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
 146           .driver_info = BTUSB_BCM_PATCHRAM },
 147
 148         /* ASUSTek Computer - Broadcom based */
 149         { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01),
 150           .driver_info = BTUSB_BCM_PATCHRAM },
 151
 152         /* Belkin F8065bf - Broadcom based */
 153         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01),
 154           .driver_info = BTUSB_BCM_PATCHRAM },
 155
 156         /* IMC Networks - Broadcom based */
 157         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01),
 158           .driver_info = BTUSB_BCM_PATCHRAM },
 159
 160         /* Dell Computer - Broadcom based  */
 161         { USB_VENDOR_AND_INTERFACE_INFO(0x413c, 0xff, 0x01, 0x01),
 162           .driver_info = BTUSB_BCM_PATCHRAM },
 163
 164         /* Toshiba Corp - Broadcom based */
 165         { USB_VENDOR_AND_INTERFACE_INFO(0x0930, 0xff, 0x01, 0x01),
 166           .driver_info = BTUSB_BCM_PATCHRAM },
 167
 168         /* Intel Bluetooth USB Bootloader (RAM module) */
 169         { USB_DEVICE(0x8087, 0x0a5a),
 170           .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
 171
 172         { }     /* Terminating entry */
 173 };
 174
 175 MODULE_DEVICE_TABLE(usb, btusb_table);
 176
 177 static const struct usb_device_id blacklist_table[] = {
 178         /* CSR BlueCore devices */
 179         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 180
 181         /* Broadcom BCM2033 without firmware */
 182         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 183
 184         /* Broadcom BCM2045 devices */
 185         { USB_DEVICE(0x0a5c, 0x2045), .driver_info = BTUSB_BCM2045 },
 186
 187         /* Atheros 3011 with sflash firmware */
 188         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 189         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 190         { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE },
 191         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 192         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 193         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 194         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 195
 196         /* Atheros AR9285 Malbec with sflash firmware */
 197         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 198
 199         /* Atheros 3012 with sflash firmware */
 200         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 201         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 202         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 203         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 204         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 205         { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
 206         { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
 207         { USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 },
 208         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 209         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 210         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 211         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 212         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 213         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 214         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 215         { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
 216         { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
 217         { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
 218         { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 },
 219         { USB_DEVICE(0x04ca, 0x3018), .driver_info = BTUSB_ATH3012 },
 220         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 221         { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
 222         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 223         { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
 224         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 225         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 226         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 227         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 228         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 229         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
 230         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 231         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 232         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 233         { USB_DEVICE(0x0cf3, 0x817b), .driver_info = BTUSB_ATH3012 },
 234         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 235         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 236         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 237         { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 },
 238         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 239         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 240         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 241         { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 },
 242         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 243         { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
 244         { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
 245         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
 246         { USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 },
 247         { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
 248         { USB_DEVICE(0x13d3, 0x3487), .driver_info = BTUSB_ATH3012 },
 249         { USB_DEVICE(0x13d3, 0x3490), .driver_info = BTUSB_ATH3012 },
 250
 251         /* Atheros AR5BBU12 with sflash firmware */
 252         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 253
 254         /* Atheros AR5BBU12 with sflash firmware */
 255         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 256         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 257
 258         /* QCA ROME chipset */
 259         { USB_DEVICE(0x0cf3, 0x535b), .driver_info = BTUSB_QCA_ROME |
 260                                                      BTUSB_WIDEBAND_SPEECH },
 261         { USB_DEVICE(0x0cf3, 0xe007), .driver_info = BTUSB_QCA_ROME |
 262                                                      BTUSB_WIDEBAND_SPEECH },
 263         { USB_DEVICE(0x0cf3, 0xe009), .driver_info = BTUSB_QCA_ROME |
 264                                                      BTUSB_WIDEBAND_SPEECH },
 265         { USB_DEVICE(0x0cf3, 0xe010), .driver_info = BTUSB_QCA_ROME |
 266                                                      BTUSB_WIDEBAND_SPEECH },
 267         { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME |
 268                                                      BTUSB_WIDEBAND_SPEECH },
 269         { USB_DEVICE(0x0cf3, 0xe301), .driver_info = BTUSB_QCA_ROME |
 270                                                      BTUSB_WIDEBAND_SPEECH },
 271         { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME |
 272                                                      BTUSB_WIDEBAND_SPEECH },
 273         { USB_DEVICE(0x0489, 0xe092), .driver_info = BTUSB_QCA_ROME |
 274                                                      BTUSB_WIDEBAND_SPEECH },
 275         { USB_DEVICE(0x0489, 0xe09f), .driver_info = BTUSB_QCA_ROME |
 276                                                      BTUSB_WIDEBAND_SPEECH },
 277         { USB_DEVICE(0x0489, 0xe0a2), .driver_info = BTUSB_QCA_ROME |
 278                                                      BTUSB_WIDEBAND_SPEECH },
 279         { USB_DEVICE(0x04ca, 0x3011), .driver_info = BTUSB_QCA_ROME |
 280                                                      BTUSB_WIDEBAND_SPEECH },
 281         { USB_DEVICE(0x04ca, 0x3015), .driver_info = BTUSB_QCA_ROME |
 282                                                      BTUSB_WIDEBAND_SPEECH },
 283         { USB_DEVICE(0x04ca, 0x3016), .driver_info = BTUSB_QCA_ROME |
 284                                                      BTUSB_WIDEBAND_SPEECH },
 285         { USB_DEVICE(0x04ca, 0x301a), .driver_info = BTUSB_QCA_ROME |
 286                                                      BTUSB_WIDEBAND_SPEECH },
 287         { USB_DEVICE(0x04ca, 0x3021), .driver_info = BTUSB_QCA_ROME |
 288                                                      BTUSB_WIDEBAND_SPEECH },
 289         { USB_DEVICE(0x13d3, 0x3491), .driver_info = BTUSB_QCA_ROME |
 290                                                      BTUSB_WIDEBAND_SPEECH },
 291         { USB_DEVICE(0x13d3, 0x3496), .driver_info = BTUSB_QCA_ROME |
 292                                                      BTUSB_WIDEBAND_SPEECH },
 293         { USB_DEVICE(0x13d3, 0x3501), .driver_info = BTUSB_QCA_ROME |
 294                                                      BTUSB_WIDEBAND_SPEECH },
 295
 296         /* QCA WCN6855 chipset */
 297         { USB_DEVICE(0x0cf3, 0xe600), .driver_info = BTUSB_QCA_WCN6855 |
 298                                                      BTUSB_WIDEBAND_SPEECH },
 299
 300         /* Broadcom BCM2035 */
 301         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 302         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 303         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 304
 305         /* Broadcom BCM2045 */
 306         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 307         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 308
 309         /* IBM/Lenovo ThinkPad with Broadcom chip */
 310         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 311         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 312
 313         /* HP laptop with Broadcom chip */
 314         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 315
 316         /* Dell laptop with Broadcom chip */
 317         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 318
 319         /* Dell Wireless 370 and 410 devices */
 320         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 321         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 322
 323         /* Belkin F8T012 and F8T013 devices */
 324         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 325         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 326
 327         /* Asus WL-BTD202 device */
 328         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 329
 330         /* Kensington Bluetooth USB adapter */
 331         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 332
 333         /* RTX Telecom based adapters with buggy SCO support */
 334         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 335         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 336
 337         /* CONWISE Technology based adapters with buggy SCO support */
 338         { USB_DEVICE(0x0e5e, 0x6622),
 339           .driver_info = BTUSB_BROKEN_ISOC | BTUSB_CW6622},
 340
 341         /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
 342         { USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE },
 343
 344         /* Digianswer devices */
 345         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 346         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 347
 348         /* CSR BlueCore Bluetooth Sniffer */
 349         { USB_DEVICE(0x0a12, 0x0002),
 350           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 351
 352         /* Frontline ComProbe Bluetooth Sniffer */
 353         { USB_DEVICE(0x16d3, 0x0002),
 354           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 355
 356         /* Marvell Bluetooth devices */
 357         { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
 358         { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
 359         { USB_DEVICE(0x1286, 0x204e), .driver_info = BTUSB_MARVELL },
 360
 361         /* Intel Bluetooth devices */
 362         { USB_DEVICE(0x8087, 0x0025), .driver_info = BTUSB_INTEL_NEW |
 363                                                      BTUSB_WIDEBAND_SPEECH |
 364                                                      BTUSB_VALID_LE_STATES },
 365         { USB_DEVICE(0x8087, 0x0026), .driver_info = BTUSB_INTEL_NEW |
 366                                                      BTUSB_WIDEBAND_SPEECH },
 367         { USB_DEVICE(0x8087, 0x0029), .driver_info = BTUSB_INTEL_NEW |
 368                                                      BTUSB_WIDEBAND_SPEECH },
 369         { USB_DEVICE(0x8087, 0x0032), .driver_info = BTUSB_INTEL_NEWGEN |
 370                                                      BTUSB_WIDEBAND_SPEECH},
 371         { USB_DEVICE(0x8087, 0x0033), .driver_info = BTUSB_INTEL_NEWGEN |
 372                                                      BTUSB_WIDEBAND_SPEECH},
 373         { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR },
 374         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 375         { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
 376         { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_NEW |
 377                                                      BTUSB_WIDEBAND_SPEECH },
 378         { USB_DEVICE(0x8087, 0x0aa7), .driver_info = BTUSB_INTEL |
 379                                                      BTUSB_WIDEBAND_SPEECH },
 380         { USB_DEVICE(0x8087, 0x0aaa), .driver_info = BTUSB_INTEL_NEW |
 381                                                      BTUSB_WIDEBAND_SPEECH |
 382                                                      BTUSB_VALID_LE_STATES },
 383
 384         /* Other Intel Bluetooth devices */
 385         { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01),
 386           .driver_info = BTUSB_IGNORE },
 387
 388         /* Realtek 8822CE Bluetooth devices */
 389         { USB_DEVICE(0x0bda, 0xb00c), .driver_info = BTUSB_REALTEK |
 390                                                      BTUSB_WIDEBAND_SPEECH },
 391         { USB_DEVICE(0x0bda, 0xc822), .driver_info = BTUSB_REALTEK |
 392                                                      BTUSB_WIDEBAND_SPEECH },
 393
 394         /* Realtek 8852AE Bluetooth devices */
 395         { USB_DEVICE(0x0bda, 0xc852), .driver_info = BTUSB_REALTEK |
 396                                                      BTUSB_WIDEBAND_SPEECH },
 397
 398         /* Realtek Bluetooth devices */
 399         { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01),
 400           .driver_info = BTUSB_REALTEK },
 401
 402         /* MediaTek Bluetooth devices */
 403         { USB_VENDOR_AND_INTERFACE_INFO(0x0e8d, 0xe0, 0x01, 0x01),
 404           .driver_info = BTUSB_MEDIATEK |
 405                          BTUSB_WIDEBAND_SPEECH |
 406                          BTUSB_VALID_LE_STATES },
 407
 408         /* Additional MediaTek MT7615E Bluetooth devices */
 409         { USB_DEVICE(0x13d3, 0x3560), .driver_info = BTUSB_MEDIATEK},
 410
 411         /* Additional Realtek 8723AE Bluetooth devices */
 412         { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK },
 413         { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK },
 414
 415         /* Additional Realtek 8723BE Bluetooth devices */
 416         { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK },
 417         { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK },
 418         { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
 419         { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
 420         { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },
 421         { USB_DEVICE(0x13d3, 0x3494), .driver_info = BTUSB_REALTEK },
 422
 423         /* Additional Realtek 8723BU Bluetooth devices */
 424         { USB_DEVICE(0x7392, 0xa611), .driver_info = BTUSB_REALTEK },
 425
 426         /* Additional Realtek 8723DE Bluetooth devices */
 427         { USB_DEVICE(0x0bda, 0xb009), .driver_info = BTUSB_REALTEK },
 428         { USB_DEVICE(0x2ff8, 0xb011), .driver_info = BTUSB_REALTEK },
 429
 430         /* Additional Realtek 8821AE Bluetooth devices */
 431         { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
 432         { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },
 433         { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK },
 434         { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK },
 435         { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK },
 436
 437         /* Additional Realtek 8822BE Bluetooth devices */
 438         { USB_DEVICE(0x13d3, 0x3526), .driver_info = BTUSB_REALTEK },
 439         { USB_DEVICE(0x0b05, 0x185c), .driver_info = BTUSB_REALTEK },
 440
 441         /* Additional Realtek 8822CE Bluetooth devices */
 442         { USB_DEVICE(0x04ca, 0x4005), .driver_info = BTUSB_REALTEK |
 443                                                      BTUSB_WIDEBAND_SPEECH },
 444         { USB_DEVICE(0x04c5, 0x161f), .driver_info = BTUSB_REALTEK |
 445                                                      BTUSB_WIDEBAND_SPEECH },
 446         { USB_DEVICE(0x0b05, 0x18ef), .driver_info = BTUSB_REALTEK |
 447                                                      BTUSB_WIDEBAND_SPEECH },
 448         { USB_DEVICE(0x13d3, 0x3548), .driver_info = BTUSB_REALTEK |
 449                                                      BTUSB_WIDEBAND_SPEECH },
 450         { USB_DEVICE(0x13d3, 0x3549), .driver_info = BTUSB_REALTEK |
 451                                                      BTUSB_WIDEBAND_SPEECH },
 452         { USB_DEVICE(0x13d3, 0x3553), .driver_info = BTUSB_REALTEK |
 453                                                      BTUSB_WIDEBAND_SPEECH },
 454         { USB_DEVICE(0x13d3, 0x3555), .driver_info = BTUSB_REALTEK |
 455                                                      BTUSB_WIDEBAND_SPEECH },
 456         { USB_DEVICE(0x2ff8, 0x3051), .driver_info = BTUSB_REALTEK |
 457                                                      BTUSB_WIDEBAND_SPEECH },
 458         { USB_DEVICE(0x1358, 0xc123), .driver_info = BTUSB_REALTEK |
 459                                                      BTUSB_WIDEBAND_SPEECH },
 460         { USB_DEVICE(0x0bda, 0xc123), .driver_info = BTUSB_REALTEK |
 461                                                      BTUSB_WIDEBAND_SPEECH },
 462         { USB_DEVICE(0x0cb5, 0xc547), .driver_info = BTUSB_REALTEK |
 463                                                      BTUSB_WIDEBAND_SPEECH },
 464
 465         /* Silicon Wave based devices */
 466         { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE },
 467
 468         { }     /* Terminating entry */
 469 };
 470
 471 /* The Bluetooth USB module build into some devices needs to be reset on resume,
 472  * this is a problem with the platform (likely shutting off all power) not with
 473  * the module itself. So we use a DMI list to match known broken platforms.
 474  */
 475 static const struct dmi_system_id btusb_needs_reset_resume_table[] = {
 476         {
 477                 /* Dell OptiPlex 3060 (QCA ROME device 0cf3:e007) */
 478                 .matches = {
 479                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 480                         DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 3060"),
 481                 },
 482         },
 483         {
 484                 /* Dell XPS 9360 (QCA ROME device 0cf3:e300) */
 485                 .matches = {
 486                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 487                         DMI_MATCH(DMI_PRODUCT_NAME, "XPS 13 9360"),
 488                 },
 489         },
 490         {
 491                 /* Dell Inspiron 5565 (QCA ROME device 0cf3:e009) */
 492                 .matches = {
 493                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 494                         DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5565"),
 495                 },
 496         },
 497         {}
 498 };
 499
 500 #define BTUSB_MAX_ISOC_FRAMES   10
 501
 502 #define BTUSB_INTR_RUNNING      0
 503 #define BTUSB_BULK_RUNNING      1
 504 #define BTUSB_ISOC_RUNNING      2
 505 #define BTUSB_SUSPENDING        3
 506 #define BTUSB_DID_ISO_RESUME    4
 507 #define BTUSB_BOOTLOADER        5
 508 #define BTUSB_DOWNLOADING       6
 509 #define BTUSB_FIRMWARE_LOADED   7
 510 #define BTUSB_FIRMWARE_FAILED   8
 511 #define BTUSB_BOOTING           9
 512 #define BTUSB_DIAG_RUNNING      10
 513 #define BTUSB_OOB_WAKE_ENABLED  11
 514 #define BTUSB_HW_RESET_ACTIVE   12
 515 #define BTUSB_TX_WAIT_VND_EVT   13
 516 #define BTUSB_WAKEUP_DISABLE    14
 517
 518 struct btusb_data {
 519         struct hci_dev       *hdev;
 520         struct usb_device    *udev;
 521         struct usb_interface *intf;
 522         struct usb_interface *isoc;
 523         struct usb_interface *diag;
 524         unsigned isoc_ifnum;
 525
 526         unsigned long flags;
 527
 528         struct work_struct work;
 529         struct work_struct waker;
 530
 531         struct usb_anchor deferred;
 532         struct usb_anchor tx_anchor;
 533         int tx_in_flight;
 534         spinlock_t txlock;
 535
 536         struct usb_anchor intr_anchor;
 537         struct usb_anchor bulk_anchor;
 538         struct usb_anchor isoc_anchor;
 539         struct usb_anchor diag_anchor;
 540         struct usb_anchor ctrl_anchor;
 541         spinlock_t rxlock;
 542
 543         struct sk_buff *evt_skb;
 544         struct sk_buff *acl_skb;
 545         struct sk_buff *sco_skb;
 546
 547         struct usb_endpoint_descriptor *intr_ep;
 548         struct usb_endpoint_descriptor *bulk_tx_ep;
 549         struct usb_endpoint_descriptor *bulk_rx_ep;
 550         struct usb_endpoint_descriptor *isoc_tx_ep;
 551         struct usb_endpoint_descriptor *isoc_rx_ep;
 552         struct usb_endpoint_descriptor *diag_tx_ep;
 553         struct usb_endpoint_descriptor *diag_rx_ep;
 554
 555         struct gpio_desc *reset_gpio;
 556
 557         __u8 cmdreq_type;
 558         __u8 cmdreq;
 559
 560         unsigned int sco_num;
 561         unsigned int air_mode;
 562         bool usb_alt6_packet_flow;
 563         int isoc_altsetting;
 564         int suspend_count;
 565
 566         int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
 567         int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
 568
 569         int (*setup_on_usb)(struct hci_dev *hdev);
 570
 571         int oob_wake_irq;   /* irq for out-of-band wake-on-bt */
 572         unsigned cmd_timeout_cnt;
 573 };
 574
 575 static void btusb_intel_cmd_timeout(struct hci_dev *hdev)
 576 {
 577         struct btusb_data *data = hci_get_drvdata(hdev);
 578         struct gpio_desc *reset_gpio = data->reset_gpio;
 579
 580         if (++data->cmd_timeout_cnt < 5)
 581                 return;
 582
 583         if (!reset_gpio) {
 584                 bt_dev_err(hdev, "No way to reset. Ignoring and continuing");
 585                 return;
 586         }
 587
 588         /*
 589          * Toggle the hard reset line if the platform provides one. The reset
 590          * is going to yank the device off the USB and then replug. So doing
 591          * once is enough. The cleanup is handled correctly on the way out
 592          * (standard USB disconnect), and the new device is detected cleanly
 593          * and bound to the driver again like it should be.
 594          */
 595         if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
 596                 bt_dev_err(hdev, "last reset failed? Not resetting again");
 597                 return;
 598         }
 599
 600         bt_dev_err(hdev, "Initiating HW reset via gpio");
 601         gpiod_set_value_cansleep(reset_gpio, 1);
 602         msleep(100);
 603         gpiod_set_value_cansleep(reset_gpio, 0);
 604 }
 605
 606 static void btusb_rtl_cmd_timeout(struct hci_dev *hdev)
 607 {
 608         struct btusb_data *data = hci_get_drvdata(hdev);
 609         struct gpio_desc *reset_gpio = data->reset_gpio;
 610
 611         if (++data->cmd_timeout_cnt < 5)
 612                 return;
 613
 614         if (!reset_gpio) {
 615                 bt_dev_err(hdev, "No gpio to reset Realtek device, ignoring");
 616                 return;
 617         }
 618
 619         /* Toggle the hard reset line. The Realtek device is going to
 620          * yank itself off the USB and then replug. The cleanup is handled
 621          * correctly on the way out (standard USB disconnect), and the new
 622          * device is detected cleanly and bound to the driver again like
 623          * it should be.
 624          */
 625         if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
 626                 bt_dev_err(hdev, "last reset failed? Not resetting again");
 627                 return;
 628         }
 629
 630         bt_dev_err(hdev, "Reset Realtek device via gpio");
 631         gpiod_set_value_cansleep(reset_gpio, 1);
 632         msleep(200);
 633         gpiod_set_value_cansleep(reset_gpio, 0);
 634 }
 635
 636 static void btusb_qca_cmd_timeout(struct hci_dev *hdev)
 637 {
 638         struct btusb_data *data = hci_get_drvdata(hdev);
 639         int err;
 640
 641         if (++data->cmd_timeout_cnt < 5)
 642                 return;
 643
 644         bt_dev_err(hdev, "Multiple cmd timeouts seen. Resetting usb device.");
 645         /* This is not an unbalanced PM reference since the device will reset */
 646         err = usb_autopm_get_interface(data->intf);
 647         if (!err)
 648                 usb_queue_reset_device(data->intf);
 649         else
 650                 bt_dev_err(hdev, "Failed usb_autopm_get_interface with %d", err);
 651 }
 652
 653 static inline void btusb_free_frags(struct btusb_data *data)
 654 {
 655         unsigned long flags;
 656
 657         spin_lock_irqsave(&data->rxlock, flags);
 658
 659         kfree_skb(data->evt_skb);
 660         data->evt_skb = NULL;
 661
 662         kfree_skb(data->acl_skb);
 663         data->acl_skb = NULL;
 664
 665         kfree_skb(data->sco_skb);
 666         data->sco_skb = NULL;
 667
 668         spin_unlock_irqrestore(&data->rxlock, flags);
 669 }
 670
 671 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
 672 {
 673         struct sk_buff *skb;
 674         unsigned long flags;
 675         int err = 0;
 676
 677         spin_lock_irqsave(&data->rxlock, flags);
 678         skb = data->evt_skb;
 679
 680         while (count) {
 681                 int len;
 682
 683                 if (!skb) {
 684                         skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
 685                         if (!skb) {
 686                                 err = -ENOMEM;
 687                                 break;
 688                         }
 689
 690                         hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
 691                         hci_skb_expect(skb) = HCI_EVENT_HDR_SIZE;
 692                 }
 693
 694                 len = min_t(uint, hci_skb_expect(skb), count);
 695                 skb_put_data(skb, buffer, len);
 696
 697                 count -= len;
 698                 buffer += len;
 699                 hci_skb_expect(skb) -= len;
 700
 701                 if (skb->len == HCI_EVENT_HDR_SIZE) {
 702                         /* Complete event header */
 703                         hci_skb_expect(skb) = hci_event_hdr(skb)->plen;
 704
 705                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 706                                 kfree_skb(skb);
 707                                 skb = NULL;
 708
 709                                 err = -EILSEQ;
 710                                 break;
 711                         }
 712                 }
 713
 714                 if (!hci_skb_expect(skb)) {
 715                         /* Complete frame */
 716                         data->recv_event(data->hdev, skb);
 717                         skb = NULL;
 718                 }
 719         }
 720
 721         data->evt_skb = skb;
 722         spin_unlock_irqrestore(&data->rxlock, flags);
 723
 724         return err;
 725 }
 726
 727 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
 728 {
 729         struct sk_buff *skb;
 730         unsigned long flags;
 731         int err = 0;
 732
 733         spin_lock_irqsave(&data->rxlock, flags);
 734         skb = data->acl_skb;
 735
 736         while (count) {
 737                 int len;
 738
 739                 if (!skb) {
 740                         skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
 741                         if (!skb) {
 742                                 err = -ENOMEM;
 743                                 break;
 744                         }
 745
 746                         hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT;
 747                         hci_skb_expect(skb) = HCI_ACL_HDR_SIZE;
 748                 }
 749
 750                 len = min_t(uint, hci_skb_expect(skb), count);
 751                 skb_put_data(skb, buffer, len);
 752
 753                 count -= len;
 754                 buffer += len;
 755                 hci_skb_expect(skb) -= len;
 756
 757                 if (skb->len == HCI_ACL_HDR_SIZE) {
 758                         __le16 dlen = hci_acl_hdr(skb)->dlen;
 759
 760                         /* Complete ACL header */
 761                         hci_skb_expect(skb) = __le16_to_cpu(dlen);
 762
 763                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 764                                 kfree_skb(skb);
 765                                 skb = NULL;
 766
 767                                 err = -EILSEQ;
 768                                 break;
 769                         }
 770                 }
 771
 772                 if (!hci_skb_expect(skb)) {
 773                         /* Complete frame */
 774                         hci_recv_frame(data->hdev, skb);
 775                         skb = NULL;
 776                 }
 777         }
 778
 779         data->acl_skb = skb;
 780         spin_unlock_irqrestore(&data->rxlock, flags);
 781
 782         return err;
 783 }
 784
 785 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
 786 {
 787         struct sk_buff *skb;
 788         unsigned long flags;
 789         int err = 0;
 790
 791         spin_lock_irqsave(&data->rxlock, flags);
 792         skb = data->sco_skb;
 793
 794         while (count) {
 795                 int len;
 796
 797                 if (!skb) {
 798                         skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
 799                         if (!skb) {
 800                                 err = -ENOMEM;
 801                                 break;
 802                         }
 803
 804                         hci_skb_pkt_type(skb) = HCI_SCODATA_PKT;
 805                         hci_skb_expect(skb) = HCI_SCO_HDR_SIZE;
 806                 }
 807
 808                 len = min_t(uint, hci_skb_expect(skb), count);
 809                 skb_put_data(skb, buffer, len);
 810
 811                 count -= len;
 812                 buffer += len;
 813                 hci_skb_expect(skb) -= len;
 814
 815                 if (skb->len == HCI_SCO_HDR_SIZE) {
 816                         /* Complete SCO header */
 817                         hci_skb_expect(skb) = hci_sco_hdr(skb)->dlen;
 818
 819                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 820                                 kfree_skb(skb);
 821                                 skb = NULL;
 822
 823                                 err = -EILSEQ;
 824                                 break;
 825                         }
 826                 }
 827
 828                 if (!hci_skb_expect(skb)) {
 829                         /* Complete frame */
 830                         hci_recv_frame(data->hdev, skb);
 831                         skb = NULL;
 832                 }
 833         }
 834
 835         data->sco_skb = skb;
 836         spin_unlock_irqrestore(&data->rxlock, flags);
 837
 838         return err;
 839 }
 840
 841 static void btusb_intr_complete(struct urb *urb)
 842 {
 843         struct hci_dev *hdev = urb->context;
 844         struct btusb_data *data = hci_get_drvdata(hdev);
 845         int err;
 846
 847         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 848                urb->actual_length);
 849
 850         if (!test_bit(HCI_RUNNING, &hdev->flags))
 851                 return;
 852
 853         if (urb->status == 0) {
 854                 hdev->stat.byte_rx += urb->actual_length;
 855
 856                 if (btusb_recv_intr(data, urb->transfer_buffer,
 857                                     urb->actual_length) < 0) {
 858                         bt_dev_err(hdev, "corrupted event packet");
 859                         hdev->stat.err_rx++;
 860                 }
 861         } else if (urb->status == -ENOENT) {
 862                 /* Avoid suspend failed when usb_kill_urb */
 863                 return;
 864         }
 865
 866         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 867                 return;
 868
 869         usb_mark_last_busy(data->udev);
 870         usb_anchor_urb(urb, &data->intr_anchor);
 871
 872         err = usb_submit_urb(urb, GFP_ATOMIC);
 873         if (err < 0) {
 874                 /* -EPERM: urb is being killed;
 875                  * -ENODEV: device got disconnected
 876                  */
 877                 if (err != -EPERM && err != -ENODEV)
 878                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
 879                                    urb, -err);
 880                 usb_unanchor_urb(urb);
 881         }
 882 }
 883
 884 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 885 {
 886         struct btusb_data *data = hci_get_drvdata(hdev);
 887         struct urb *urb;
 888         unsigned char *buf;
 889         unsigned int pipe;
 890         int err, size;
 891
 892         BT_DBG("%s", hdev->name);
 893
 894         if (!data->intr_ep)
 895                 return -ENODEV;
 896
 897         urb = usb_alloc_urb(0, mem_flags);
 898         if (!urb)
 899                 return -ENOMEM;
 900
 901         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 902
 903         buf = kmalloc(size, mem_flags);
 904         if (!buf) {
 905                 usb_free_urb(urb);
 906                 return -ENOMEM;
 907         }
 908
 909         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 910
 911         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 912                          btusb_intr_complete, hdev, data->intr_ep->bInterval);
 913
 914         urb->transfer_flags |= URB_FREE_BUFFER;
 915
 916         usb_anchor_urb(urb, &data->intr_anchor);
 917
 918         err = usb_submit_urb(urb, mem_flags);
 919         if (err < 0) {
 920                 if (err != -EPERM && err != -ENODEV)
 921                         bt_dev_err(hdev, "urb %p submission failed (%d)",
 922                                    urb, -err);
 923                 usb_unanchor_urb(urb);
 924         }
 925
 926         usb_free_urb(urb);
 927
 928         return err;
 929 }
 930
 931 static void btusb_bulk_complete(struct urb *urb)
 932 {
 933         struct hci_dev *hdev = urb->context;
 934         struct btusb_data *data = hci_get_drvdata(hdev);
 935         int err;
 936
 937         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 938                urb->actual_length);
 939
 940         if (!test_bit(HCI_RUNNING, &hdev->flags))
 941                 return;
 942
 943         if (urb->status == 0) {
 944                 hdev->stat.byte_rx += urb->actual_length;
 945
 946                 if (data->recv_bulk(data, urb->transfer_buffer,
 947                                     urb->actual_length) < 0) {
 948                         bt_dev_err(hdev, "corrupted ACL packet");
 949                         hdev->stat.err_rx++;
 950                 }
 951         } else if (urb->status == -ENOENT) {
 952                 /* Avoid suspend failed when usb_kill_urb */
 953                 return;
 954         }
 955
 956         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 957                 return;
 958
 959         usb_anchor_urb(urb, &data->bulk_anchor);
 960         usb_mark_last_busy(data->udev);
 961
 962         err = usb_submit_urb(urb, GFP_ATOMIC);
 963         if (err < 0) {
 964                 /* -EPERM: urb is being killed;
 965                  * -ENODEV: device got disconnected
 966                  */
 967                 if (err != -EPERM && err != -ENODEV)
 968                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
 969                                    urb, -err);
 970                 usb_unanchor_urb(urb);
 971         }
 972 }
 973
 974 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 975 {
 976         struct btusb_data *data = hci_get_drvdata(hdev);
 977         struct urb *urb;
 978         unsigned char *buf;
 979         unsigned int pipe;
 980         int err, size = HCI_MAX_FRAME_SIZE;
 981
 982         BT_DBG("%s", hdev->name);
 983
 984         if (!data->bulk_rx_ep)
 985                 return -ENODEV;
 986
 987         urb = usb_alloc_urb(0, mem_flags);
 988         if (!urb)
 989                 return -ENOMEM;
 990
 991         buf = kmalloc(size, mem_flags);
 992         if (!buf) {
 993                 usb_free_urb(urb);
 994                 return -ENOMEM;
 995         }
 996
 997         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 998
 999         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
1000                           btusb_bulk_complete, hdev);
1001
1002         urb->transfer_flags |= URB_FREE_BUFFER;
1003
1004         usb_mark_last_busy(data->udev);
1005         usb_anchor_urb(urb, &data->bulk_anchor);
1006
1007         err = usb_submit_urb(urb, mem_flags);
1008         if (err < 0) {
1009                 if (err != -EPERM && err != -ENODEV)
1010                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1011                                    urb, -err);
1012                 usb_unanchor_urb(urb);
1013         }
1014
1015         usb_free_urb(urb);
1016
1017         return err;
1018 }
1019
1020 static void btusb_isoc_complete(struct urb *urb)
1021 {
1022         struct hci_dev *hdev = urb->context;
1023         struct btusb_data *data = hci_get_drvdata(hdev);
1024         int i, err;
1025
1026         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1027                urb->actual_length);
1028
1029         if (!test_bit(HCI_RUNNING, &hdev->flags))
1030                 return;
1031
1032         if (urb->status == 0) {
1033                 for (i = 0; i < urb->number_of_packets; i++) {
1034                         unsigned int offset = urb->iso_frame_desc[i].offset;
1035                         unsigned int length = urb->iso_frame_desc[i].actual_length;
1036
1037                         if (urb->iso_frame_desc[i].status)
1038                                 continue;
1039
1040                         hdev->stat.byte_rx += length;
1041
1042                         if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
1043                                             length) < 0) {
1044                                 bt_dev_err(hdev, "corrupted SCO packet");
1045                                 hdev->stat.err_rx++;
1046                         }
1047                 }
1048         } else if (urb->status == -ENOENT) {
1049                 /* Avoid suspend failed when usb_kill_urb */
1050                 return;
1051         }
1052
1053         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
1054                 return;
1055
1056         usb_anchor_urb(urb, &data->isoc_anchor);
1057
1058         err = usb_submit_urb(urb, GFP_ATOMIC);
1059         if (err < 0) {
1060                 /* -EPERM: urb is being killed;
1061                  * -ENODEV: device got disconnected
1062                  */
1063                 if (err != -EPERM && err != -ENODEV)
1064                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1065                                    urb, -err);
1066                 usb_unanchor_urb(urb);
1067         }
1068 }
1069
1070 static inline void __fill_isoc_descriptor_msbc(struct urb *urb, int len,
1071                                                int mtu, struct btusb_data *data)
1072 {
1073         int i, offset = 0;
1074         unsigned int interval;
1075
1076         BT_DBG("len %d mtu %d", len, mtu);
1077
1078         /* For mSBC ALT 6 setting the host will send the packet at continuous
1079          * flow. As per core spec 5, vol 4, part B, table 2.1. For ALT setting
1080          * 6 the HCI PACKET INTERVAL should be 7.5ms for every usb packets.
1081          * To maintain the rate we send 63bytes of usb packets alternatively for
1082          * 7ms and 8ms to maintain the rate as 7.5ms.
1083          */
1084         if (data->usb_alt6_packet_flow) {
1085                 interval = 7;
1086                 data->usb_alt6_packet_flow = false;
1087         } else {
1088                 interval = 6;
1089                 data->usb_alt6_packet_flow = true;
1090         }
1091
1092         for (i = 0; i < interval; i++) {
1093                 urb->iso_frame_desc[i].offset = offset;
1094                 urb->iso_frame_desc[i].length = offset;
1095         }
1096
1097         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
1098                 urb->iso_frame_desc[i].offset = offset;
1099                 urb->iso_frame_desc[i].length = len;
1100                 i++;
1101         }
1102
1103         urb->number_of_packets = i;
1104 }
1105
1106 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
1107 {
1108         int i, offset = 0;
1109
1110         BT_DBG("len %d mtu %d", len, mtu);
1111
1112         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
1113                                         i++, offset += mtu, len -= mtu) {
1114                 urb->iso_frame_desc[i].offset = offset;
1115                 urb->iso_frame_desc[i].length = mtu;
1116         }
1117
1118         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
1119                 urb->iso_frame_desc[i].offset = offset;
1120                 urb->iso_frame_desc[i].length = len;
1121                 i++;
1122         }
1123
1124         urb->number_of_packets = i;
1125 }
1126
1127 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
1128 {
1129         struct btusb_data *data = hci_get_drvdata(hdev);
1130         struct urb *urb;
1131         unsigned char *buf;
1132         unsigned int pipe;
1133         int err, size;
1134
1135         BT_DBG("%s", hdev->name);
1136
1137         if (!data->isoc_rx_ep)
1138                 return -ENODEV;
1139
1140         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
1141         if (!urb)
1142                 return -ENOMEM;
1143
1144         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
1145                                                 BTUSB_MAX_ISOC_FRAMES;
1146
1147         buf = kmalloc(size, mem_flags);
1148         if (!buf) {
1149                 usb_free_urb(urb);
1150                 return -ENOMEM;
1151         }
1152
1153         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
1154
1155         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
1156                          hdev, data->isoc_rx_ep->bInterval);
1157
1158         urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
1159
1160         __fill_isoc_descriptor(urb, size,
1161                                le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
1162
1163         usb_anchor_urb(urb, &data->isoc_anchor);
1164
1165         err = usb_submit_urb(urb, mem_flags);
1166         if (err < 0) {
1167                 if (err != -EPERM && err != -ENODEV)
1168                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1169                                    urb, -err);
1170                 usb_unanchor_urb(urb);
1171         }
1172
1173         usb_free_urb(urb);
1174
1175         return err;
1176 }
1177
1178 static void btusb_diag_complete(struct urb *urb)
1179 {
1180         struct hci_dev *hdev = urb->context;
1181         struct btusb_data *data = hci_get_drvdata(hdev);
1182         int err;
1183
1184         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1185                urb->actual_length);
1186
1187         if (urb->status == 0) {
1188                 struct sk_buff *skb;
1189
1190                 skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC);
1191                 if (skb) {
1192                         skb_put_data(skb, urb->transfer_buffer,
1193                                      urb->actual_length);
1194                         hci_recv_diag(hdev, skb);
1195                 }
1196         } else if (urb->status == -ENOENT) {
1197                 /* Avoid suspend failed when usb_kill_urb */
1198                 return;
1199         }
1200
1201         if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags))
1202                 return;
1203
1204         usb_anchor_urb(urb, &data->diag_anchor);
1205         usb_mark_last_busy(data->udev);
1206
1207         err = usb_submit_urb(urb, GFP_ATOMIC);
1208         if (err < 0) {
1209                 /* -EPERM: urb is being killed;
1210                  * -ENODEV: device got disconnected
1211                  */
1212                 if (err != -EPERM && err != -ENODEV)
1213                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1214                                    urb, -err);
1215                 usb_unanchor_urb(urb);
1216         }
1217 }
1218
1219 static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags)
1220 {
1221         struct btusb_data *data = hci_get_drvdata(hdev);
1222         struct urb *urb;
1223         unsigned char *buf;
1224         unsigned int pipe;
1225         int err, size = HCI_MAX_FRAME_SIZE;
1226
1227         BT_DBG("%s", hdev->name);
1228
1229         if (!data->diag_rx_ep)
1230                 return -ENODEV;
1231
1232         urb = usb_alloc_urb(0, mem_flags);
1233         if (!urb)
1234                 return -ENOMEM;
1235
1236         buf = kmalloc(size, mem_flags);
1237         if (!buf) {
1238                 usb_free_urb(urb);
1239                 return -ENOMEM;
1240         }
1241
1242         pipe = usb_rcvbulkpipe(data->udev, data->diag_rx_ep->bEndpointAddress);
1243
1244         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
1245                           btusb_diag_complete, hdev);
1246
1247         urb->transfer_flags |= URB_FREE_BUFFER;
1248
1249         usb_mark_last_busy(data->udev);
1250         usb_anchor_urb(urb, &data->diag_anchor);
1251
1252         err = usb_submit_urb(urb, mem_flags);
1253         if (err < 0) {
1254                 if (err != -EPERM && err != -ENODEV)
1255                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1256                                    urb, -err);
1257                 usb_unanchor_urb(urb);
1258         }
1259
1260         usb_free_urb(urb);
1261
1262         return err;
1263 }
1264
1265 static void btusb_tx_complete(struct urb *urb)
1266 {
1267         struct sk_buff *skb = urb->context;
1268         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1269         struct btusb_data *data = hci_get_drvdata(hdev);
1270         unsigned long flags;
1271
1272         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1273                urb->actual_length);
1274
1275         if (!test_bit(HCI_RUNNING, &hdev->flags))
1276                 goto done;
1277
1278         if (!urb->status)
1279                 hdev->stat.byte_tx += urb->transfer_buffer_length;
1280         else
1281                 hdev->stat.err_tx++;
1282
1283 done:
1284         spin_lock_irqsave(&data->txlock, flags);
1285         data->tx_in_flight--;
1286         spin_unlock_irqrestore(&data->txlock, flags);
1287
1288         kfree(urb->setup_packet);
1289
1290         kfree_skb(skb);
1291 }
1292
1293 static void btusb_isoc_tx_complete(struct urb *urb)
1294 {
1295         struct sk_buff *skb = urb->context;
1296         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1297
1298         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1299                urb->actual_length);
1300
1301         if (!test_bit(HCI_RUNNING, &hdev->flags))
1302                 goto done;
1303
1304         if (!urb->status)
1305                 hdev->stat.byte_tx += urb->transfer_buffer_length;
1306         else
1307                 hdev->stat.err_tx++;
1308
1309 done:
1310         kfree(urb->setup_packet);
1311
1312         kfree_skb(skb);
1313 }
1314
1315 static int btusb_open(struct hci_dev *hdev)
1316 {
1317         struct btusb_data *data = hci_get_drvdata(hdev);
1318         int err;
1319
1320         BT_DBG("%s", hdev->name);
1321
1322         err = usb_autopm_get_interface(data->intf);
1323         if (err < 0)
1324                 return err;
1325
1326         /* Patching USB firmware files prior to starting any URBs of HCI path
1327          * It is more safe to use USB bulk channel for downloading USB patch
1328          */
1329         if (data->setup_on_usb) {
1330                 err = data->setup_on_usb(hdev);
1331                 if (err < 0)
1332                         goto setup_fail;
1333         }
1334
1335         data->intf->needs_remote_wakeup = 1;
1336
1337         /* Disable device remote wakeup when host is suspended
1338          * For Realtek chips, global suspend without
1339          * SET_FEATURE (DEVICE_REMOTE_WAKEUP) can save more power in device.
1340          */
1341         if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags))
1342                 device_wakeup_disable(&data->udev->dev);
1343
1344         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
1345                 goto done;
1346
1347         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
1348         if (err < 0)
1349                 goto failed;
1350
1351         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1352         if (err < 0) {
1353                 usb_kill_anchored_urbs(&data->intr_anchor);
1354                 goto failed;
1355         }
1356
1357         set_bit(BTUSB_BULK_RUNNING, &data->flags);
1358         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1359
1360         if (data->diag) {
1361                 if (!btusb_submit_diag_urb(hdev, GFP_KERNEL))
1362                         set_bit(BTUSB_DIAG_RUNNING, &data->flags);
1363         }
1364
1365 done:
1366         usb_autopm_put_interface(data->intf);
1367         return 0;
1368
1369 failed:
1370         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1371 setup_fail:
1372         usb_autopm_put_interface(data->intf);
1373         return err;
1374 }
1375
1376 static void btusb_stop_traffic(struct btusb_data *data)
1377 {
1378         usb_kill_anchored_urbs(&data->intr_anchor);
1379         usb_kill_anchored_urbs(&data->bulk_anchor);
1380         usb_kill_anchored_urbs(&data->isoc_anchor);
1381         usb_kill_anchored_urbs(&data->diag_anchor);
1382         usb_kill_anchored_urbs(&data->ctrl_anchor);
1383 }
1384
1385 static int btusb_close(struct hci_dev *hdev)
1386 {
1387         struct btusb_data *data = hci_get_drvdata(hdev);
1388         int err;
1389
1390         BT_DBG("%s", hdev->name);
1391
1392         cancel_work_sync(&data->work);
1393         cancel_work_sync(&data->waker);
1394
1395         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1396         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1397         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1398         clear_bit(BTUSB_DIAG_RUNNING, &data->flags);
1399
1400         btusb_stop_traffic(data);
1401         btusb_free_frags(data);
1402
1403         err = usb_autopm_get_interface(data->intf);
1404         if (err < 0)
1405                 goto failed;
1406
1407         data->intf->needs_remote_wakeup = 0;
1408
1409         /* Enable remote wake up for auto-suspend */
1410         if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags))
1411                 data->intf->needs_remote_wakeup = 1;
1412
1413         usb_autopm_put_interface(data->intf);
1414
1415 failed:
1416         usb_scuttle_anchored_urbs(&data->deferred);
1417         return 0;
1418 }
1419
1420 static int btusb_flush(struct hci_dev *hdev)
1421 {
1422         struct btusb_data *data = hci_get_drvdata(hdev);
1423
1424         BT_DBG("%s", hdev->name);
1425
1426         usb_kill_anchored_urbs(&data->tx_anchor);
1427         btusb_free_frags(data);
1428
1429         return 0;
1430 }
1431
1432 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
1433 {
1434         struct btusb_data *data = hci_get_drvdata(hdev);
1435         struct usb_ctrlrequest *dr;
1436         struct urb *urb;
1437         unsigned int pipe;
1438
1439         urb = usb_alloc_urb(0, GFP_KERNEL);
1440         if (!urb)
1441                 return ERR_PTR(-ENOMEM);
1442
1443         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
1444         if (!dr) {
1445                 usb_free_urb(urb);
1446                 return ERR_PTR(-ENOMEM);
1447         }
1448
1449         dr->bRequestType = data->cmdreq_type;
1450         dr->bRequest     = data->cmdreq;
1451         dr->wIndex       = 0;
1452         dr->wValue       = 0;
1453         dr->wLength      = __cpu_to_le16(skb->len);
1454
1455         pipe = usb_sndctrlpipe(data->udev, 0x00);
1456
1457         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
1458                              skb->data, skb->len, btusb_tx_complete, skb);
1459
1460         skb->dev = (void *)hdev;
1461
1462         return urb;
1463 }
1464
1465 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
1466 {
1467         struct btusb_data *data = hci_get_drvdata(hdev);
1468         struct urb *urb;
1469         unsigned int pipe;
1470
1471         if (!data->bulk_tx_ep)
1472                 return ERR_PTR(-ENODEV);
1473
1474         urb = usb_alloc_urb(0, GFP_KERNEL);
1475         if (!urb)
1476                 return ERR_PTR(-ENOMEM);
1477
1478         pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1479
1480         usb_fill_bulk_urb(urb, data->udev, pipe,
1481                           skb->data, skb->len, btusb_tx_complete, skb);
1482
1483         skb->dev = (void *)hdev;
1484
1485         return urb;
1486 }
1487
1488 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1489 {
1490         struct btusb_data *data = hci_get_drvdata(hdev);
1491         struct urb *urb;
1492         unsigned int pipe;
1493
1494         if (!data->isoc_tx_ep)
1495                 return ERR_PTR(-ENODEV);
1496
1497         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1498         if (!urb)
1499                 return ERR_PTR(-ENOMEM);
1500
1501         pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1502
1503         usb_fill_int_urb(urb, data->udev, pipe,
1504                          skb->data, skb->len, btusb_isoc_tx_complete,
1505                          skb, data->isoc_tx_ep->bInterval);
1506
1507         urb->transfer_flags  = URB_ISO_ASAP;
1508
1509         if (data->isoc_altsetting == 6)
1510                 __fill_isoc_descriptor_msbc(urb, skb->len,
1511                                             le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize),
1512                                             data);
1513         else
1514                 __fill_isoc_descriptor(urb, skb->len,
1515                                        le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1516         skb->dev = (void *)hdev;
1517
1518         return urb;
1519 }
1520
1521 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1522 {
1523         struct btusb_data *data = hci_get_drvdata(hdev);
1524         int err;
1525
1526         usb_anchor_urb(urb, &data->tx_anchor);
1527
1528         err = usb_submit_urb(urb, GFP_KERNEL);
1529         if (err < 0) {
1530                 if (err != -EPERM && err != -ENODEV)
1531                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1532                                    urb, -err);
1533                 kfree(urb->setup_packet);
1534                 usb_unanchor_urb(urb);
1535         } else {
1536                 usb_mark_last_busy(data->udev);
1537         }
1538
1539         usb_free_urb(urb);
1540         return err;
1541 }
1542
1543 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1544 {
1545         struct btusb_data *data = hci_get_drvdata(hdev);
1546         unsigned long flags;
1547         bool suspending;
1548
1549         spin_lock_irqsave(&data->txlock, flags);
1550         suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1551         if (!suspending)
1552                 data->tx_in_flight++;
1553         spin_unlock_irqrestore(&data->txlock, flags);
1554
1555         if (!suspending)
1556                 return submit_tx_urb(hdev, urb);
1557
1558         usb_anchor_urb(urb, &data->deferred);
1559         schedule_work(&data->waker);
1560
1561         usb_free_urb(urb);
1562         return 0;
1563 }
1564
1565 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1566 {
1567         struct urb *urb;
1568
1569         BT_DBG("%s", hdev->name);
1570
1571         switch (hci_skb_pkt_type(skb)) {
1572         case HCI_COMMAND_PKT:
1573                 urb = alloc_ctrl_urb(hdev, skb);
1574                 if (IS_ERR(urb))
1575                         return PTR_ERR(urb);
1576
1577                 hdev->stat.cmd_tx++;
1578                 return submit_or_queue_tx_urb(hdev, urb);
1579
1580         case HCI_ACLDATA_PKT:
1581                 urb = alloc_bulk_urb(hdev, skb);
1582                 if (IS_ERR(urb))
1583                         return PTR_ERR(urb);
1584
1585                 hdev->stat.acl_tx++;
1586                 return submit_or_queue_tx_urb(hdev, urb);
1587
1588         case HCI_SCODATA_PKT:
1589                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1590                         return -ENODEV;
1591
1592                 urb = alloc_isoc_urb(hdev, skb);
1593                 if (IS_ERR(urb))
1594                         return PTR_ERR(urb);
1595
1596                 hdev->stat.sco_tx++;
1597                 return submit_tx_urb(hdev, urb);
1598         }
1599
1600         return -EILSEQ;
1601 }
1602
1603 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1604 {
1605         struct btusb_data *data = hci_get_drvdata(hdev);
1606
1607         BT_DBG("%s evt %d", hdev->name, evt);
1608
1609         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1610                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1611                 data->air_mode = evt;
1612                 schedule_work(&data->work);
1613         }
1614 }
1615
1616 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1617 {
1618         struct btusb_data *data = hci_get_drvdata(hdev);
1619         struct usb_interface *intf = data->isoc;
1620         struct usb_endpoint_descriptor *ep_desc;
1621         int i, err;
1622
1623         if (!data->isoc)
1624                 return -ENODEV;
1625
1626         err = usb_set_interface(data->udev, data->isoc_ifnum, altsetting);
1627         if (err < 0) {
1628                 bt_dev_err(hdev, "setting interface failed (%d)", -err);
1629                 return err;
1630         }
1631
1632         data->isoc_altsetting = altsetting;
1633
1634         data->isoc_tx_ep = NULL;
1635         data->isoc_rx_ep = NULL;
1636
1637         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1638                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1639
1640                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1641                         data->isoc_tx_ep = ep_desc;
1642                         continue;
1643                 }
1644
1645                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1646                         data->isoc_rx_ep = ep_desc;
1647                         continue;
1648                 }
1649         }
1650
1651         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1652                 bt_dev_err(hdev, "invalid SCO descriptors");
1653                 return -ENODEV;
1654         }
1655
1656         return 0;
1657 }
1658
1659 static int btusb_switch_alt_setting(struct hci_dev *hdev, int new_alts)
1660 {
1661         struct btusb_data *data = hci_get_drvdata(hdev);
1662         int err;
1663
1664         if (data->isoc_altsetting != new_alts) {
1665                 unsigned long flags;
1666
1667                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1668                 usb_kill_anchored_urbs(&data->isoc_anchor);
1669
1670                 /* When isochronous alternate setting needs to be
1671                  * changed, because SCO connection has been added
1672                  * or removed, a packet fragment may be left in the
1673                  * reassembling state. This could lead to wrongly
1674                  * assembled fragments.
1675                  *
1676                  * Clear outstanding fragment when selecting a new
1677                  * alternate setting.
1678                  */
1679                 spin_lock_irqsave(&data->rxlock, flags);
1680                 kfree_skb(data->sco_skb);
1681                 data->sco_skb = NULL;
1682                 spin_unlock_irqrestore(&data->rxlock, flags);
1683
1684                 err = __set_isoc_interface(hdev, new_alts);
1685                 if (err < 0)
1686                         return err;
1687         }
1688
1689         if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1690                 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1691                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1692                 else
1693                         btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1694         }
1695
1696         return 0;
1697 }
1698
1699 static struct usb_host_interface *btusb_find_altsetting(struct btusb_data *data,
1700                                                         int alt)
1701 {
1702         struct usb_interface *intf = data->isoc;
1703         int i;
1704
1705         BT_DBG("Looking for Alt no :%d", alt);
1706
1707         if (!intf)
1708                 return NULL;
1709
1710         for (i = 0; i < intf->num_altsetting; i++) {
1711                 if (intf->altsetting[i].desc.bAlternateSetting == alt)
1712                         return &intf->altsetting[i];
1713         }
1714
1715         return NULL;
1716 }
1717
1718 static void btusb_work(struct work_struct *work)
1719 {
1720         struct btusb_data *data = container_of(work, struct btusb_data, work);
1721         struct hci_dev *hdev = data->hdev;
1722         int new_alts = 0;
1723         int err;
1724
1725         if (data->sco_num > 0) {
1726                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1727                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1728                         if (err < 0) {
1729                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1730                                 usb_kill_anchored_urbs(&data->isoc_anchor);
1731                                 return;
1732                         }
1733
1734                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1735                 }
1736
1737                 if (data->air_mode == HCI_NOTIFY_ENABLE_SCO_CVSD) {
1738                         if (hdev->voice_setting & 0x0020) {
1739                                 static const int alts[3] = { 2, 4, 5 };
1740
1741                                 new_alts = alts[data->sco_num - 1];
1742                         } else {
1743                                 new_alts = data->sco_num;
1744                         }
1745                 } else if (data->air_mode == HCI_NOTIFY_ENABLE_SCO_TRANSP) {
1746                         /* Bluetooth USB spec recommends alt 6 (63 bytes), but
1747                          * many adapters do not support it.  Alt 1 appears to
1748                          * work for all adapters that do not have alt 6, and
1749                          * which work with WBS at all.
1750                          */
1751                         new_alts = btusb_find_altsetting(data, 6) ? 6 : 1;
1752                 }
1753
1754                 if (btusb_switch_alt_setting(hdev, new_alts) < 0)
1755                         bt_dev_err(hdev, "set USB alt:(%d) failed!", new_alts);
1756         } else {
1757                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1758                 usb_kill_anchored_urbs(&data->isoc_anchor);
1759
1760                 __set_isoc_interface(hdev, 0);
1761                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1762                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1763         }
1764 }
1765
1766 static void btusb_waker(struct work_struct *work)
1767 {
1768         struct btusb_data *data = container_of(work, struct btusb_data, waker);
1769         int err;
1770
1771         err = usb_autopm_get_interface(data->intf);
1772         if (err < 0)
1773                 return;
1774
1775         usb_autopm_put_interface(data->intf);
1776 }
1777
1778 static int btusb_setup_bcm92035(struct hci_dev *hdev)
1779 {
1780         struct sk_buff *skb;
1781         u8 val = 0x00;
1782
1783         BT_DBG("%s", hdev->name);
1784
1785         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1786         if (IS_ERR(skb))
1787                 bt_dev_err(hdev, "BCM92035 command failed (%ld)", PTR_ERR(skb));
1788         else
1789                 kfree_skb(skb);
1790
1791         return 0;
1792 }
1793
1794 static int btusb_setup_csr(struct hci_dev *hdev)
1795 {
1796         struct btusb_data *data = hci_get_drvdata(hdev);
1797         u16 bcdDevice = le16_to_cpu(data->udev->descriptor.bcdDevice);
1798         struct hci_rp_read_local_version *rp;
1799         struct sk_buff *skb;
1800         bool is_fake = false;
1801         int ret;
1802
1803         BT_DBG("%s", hdev->name);
1804
1805         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1806                              HCI_INIT_TIMEOUT);
1807         if (IS_ERR(skb)) {
1808                 int err = PTR_ERR(skb);
1809                 bt_dev_err(hdev, "CSR: Local version failed (%d)", err);
1810                 return err;
1811         }
1812
1813         if (skb->len != sizeof(struct hci_rp_read_local_version)) {
1814                 bt_dev_err(hdev, "CSR: Local version length mismatch");
1815                 kfree_skb(skb);
1816                 return -EIO;
1817         }
1818
1819         rp = (struct hci_rp_read_local_version *)skb->data;
1820
1821         /* Detect a wide host of Chinese controllers that aren't CSR.
1822          *
1823          * Known fake bcdDevices: 0x0100, 0x0134, 0x1915, 0x2520, 0x7558, 0x8891
1824          *
1825          * The main thing they have in common is that these are really popular low-cost
1826          * options that support newer Bluetooth versions but rely on heavy VID/PID
1827          * squatting of this poor old Bluetooth 1.1 device. Even sold as such.
1828          *
1829          * We detect actual CSR devices by checking that the HCI manufacturer code
1830          * is Cambridge Silicon Radio (10) and ensuring that LMP sub-version and
1831          * HCI rev values always match. As they both store the firmware number.
1832          */
1833         if (le16_to_cpu(rp->manufacturer) != 10 ||
1834             le16_to_cpu(rp->hci_rev) != le16_to_cpu(rp->lmp_subver))
1835                 is_fake = true;
1836
1837         /* Known legit CSR firmware build numbers and their supported BT versions:
1838          * - 1.1 (0x1) -> 0x0073, 0x020d, 0x033c, 0x034e
1839          * - 1.2 (0x2) ->                 0x04d9, 0x0529
1840          * - 2.0 (0x3) ->         0x07a6, 0x07ad, 0x0c5c
1841          * - 2.1 (0x4) ->         0x149c, 0x1735, 0x1899 (0x1899 is a BlueCore4-External)
1842          * - 4.0 (0x6) ->         0x1d86, 0x2031, 0x22bb
1843          *
1844          * e.g. Real CSR dongles with LMP subversion 0x73 are old enough that
1845          *      support BT 1.1 only; so it's a dead giveaway when some
1846          *      third-party BT 4.0 dongle reuses it.
1847          */
1848         else if (le16_to_cpu(rp->lmp_subver) <= 0x034e &&
1849                  le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_1_1)
1850                 is_fake = true;
1851
1852         else if (le16_to_cpu(rp->lmp_subver) <= 0x0529 &&
1853                  le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_1_2)
1854                 is_fake = true;
1855
1856         else if (le16_to_cpu(rp->lmp_subver) <= 0x0c5c &&
1857                  le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_2_0)
1858                 is_fake = true;
1859
1860         else if (le16_to_cpu(rp->lmp_subver) <= 0x1899 &&
1861                  le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_2_1)
1862                 is_fake = true;
1863
1864         else if (le16_to_cpu(rp->lmp_subver) <= 0x22bb &&
1865                  le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_4_0)
1866                 is_fake = true;
1867
1868         /* Other clones which beat all the above checks */
1869         else if (bcdDevice == 0x0134 &&
1870                  le16_to_cpu(rp->lmp_subver) == 0x0c5c &&
1871                  le16_to_cpu(rp->hci_ver) == BLUETOOTH_VER_2_0)
1872                 is_fake = true;
1873
1874         if (is_fake) {
1875                 bt_dev_warn(hdev, "CSR: Unbranded CSR clone detected; adding workarounds...");
1876
1877                 /* Generally these clones have big discrepancies between
1878                  * advertised features and what's actually supported.
1879                  * Probably will need to be expanded in the future;
1880                  * without these the controller will lock up.
1881                  */
1882                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
1883                 set_bit(HCI_QUIRK_BROKEN_ERR_DATA_REPORTING, &hdev->quirks);
1884
1885                 /* Clear the reset quirk since this is not an actual
1886                  * early Bluetooth 1.1 device from CSR.
1887                  */
1888                 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1889                 clear_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
1890
1891                 /*
1892                  * Special workaround for clones with a Barrot 8041a02 chip,
1893                  * these clones are really messed-up:
1894                  * 1. Their bulk rx endpoint will never report any data unless
1895                  * the device was suspended at least once (yes really).
1896                  * 2. They will not wakeup when autosuspended and receiving data
1897                  * on their bulk rx endpoint from e.g. a keyboard or mouse
1898                  * (IOW remote-wakeup support is broken for the bulk endpoint).
1899                  *
1900                  * To fix 1. enable runtime-suspend, force-suspend the
1901                  * hci and then wake-it up by disabling runtime-suspend.
1902                  *
1903                  * To fix 2. clear the hci's can_wake flag, this way the hci
1904                  * will still be autosuspended when it is not open.
1905                  */
1906                 if (bcdDevice == 0x8891 &&
1907                     le16_to_cpu(rp->lmp_subver) == 0x1012 &&
1908                     le16_to_cpu(rp->hci_rev) == 0x0810 &&
1909                     le16_to_cpu(rp->hci_ver) == BLUETOOTH_VER_4_0) {
1910                         bt_dev_warn(hdev, "CSR: detected a fake CSR dongle using a Barrot 8041a02 chip, this chip is very buggy and may have issues");
1911
1912                         pm_runtime_allow(&data->udev->dev);
1913
1914                         ret = pm_runtime_suspend(&data->udev->dev);
1915                         if (ret >= 0)
1916                                 msleep(200);
1917                         else
1918                                 bt_dev_err(hdev, "Failed to suspend the device for Barrot 8041a02 receive-issue workaround");
1919
1920                         pm_runtime_forbid(&data->udev->dev);
1921
1922                         device_set_wakeup_capable(&data->udev->dev, false);
1923                         /* Re-enable autosuspend if this was requested */
1924                         if (enable_autosuspend)
1925                                 usb_enable_autosuspend(data->udev);
1926                 }
1927         }
1928
1929         kfree_skb(skb);
1930
1931         return 0;
1932 }
1933
1934 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1935                                                        struct intel_version *ver)
1936 {
1937         const struct firmware *fw;
1938         char fwname[64];
1939         int ret;
1940
1941         snprintf(fwname, sizeof(fwname),
1942                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1943                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
1944                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1945                  ver->fw_build_ww, ver->fw_build_yy);
1946
1947         ret = request_firmware(&fw, fwname, &hdev->dev);
1948         if (ret < 0) {
1949                 if (ret == -EINVAL) {
1950                         bt_dev_err(hdev, "Intel firmware file request failed (%d)",
1951                                    ret);
1952                         return NULL;
1953                 }
1954
1955                 bt_dev_err(hdev, "failed to open Intel firmware file: %s (%d)",
1956                            fwname, ret);
1957
1958                 /* If the correct firmware patch file is not found, use the
1959                  * default firmware patch file instead
1960                  */
1961                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1962                          ver->hw_platform, ver->hw_variant);
1963                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1964                         bt_dev_err(hdev, "failed to open default fw file: %s",
1965                                    fwname);
1966                         return NULL;
1967                 }
1968         }
1969
1970         bt_dev_info(hdev, "Intel Bluetooth firmware file: %s", fwname);
1971
1972         return fw;
1973 }
1974
1975 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1976                                       const struct firmware *fw,
1977                                       const u8 **fw_ptr, int *disable_patch)
1978 {
1979         struct sk_buff *skb;
1980         struct hci_command_hdr *cmd;
1981         const u8 *cmd_param;
1982         struct hci_event_hdr *evt = NULL;
1983         const u8 *evt_param = NULL;
1984         int remain = fw->size - (*fw_ptr - fw->data);
1985
1986         /* The first byte indicates the types of the patch command or event.
1987          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1988          * in the current firmware buffer doesn't start with 0x01 or
1989          * the size of remain buffer is smaller than HCI command header,
1990          * the firmware file is corrupted and it should stop the patching
1991          * process.
1992          */
1993         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1994                 bt_dev_err(hdev, "Intel fw corrupted: invalid cmd read");
1995                 return -EINVAL;
1996         }
1997         (*fw_ptr)++;
1998         remain--;
1999
2000         cmd = (struct hci_command_hdr *)(*fw_ptr);
2001         *fw_ptr += sizeof(*cmd);
2002         remain -= sizeof(*cmd);
2003
2004         /* Ensure that the remain firmware data is long enough than the length
2005          * of command parameter. If not, the firmware file is corrupted.
2006          */
2007         if (remain < cmd->plen) {
2008                 bt_dev_err(hdev, "Intel fw corrupted: invalid cmd len");
2009                 return -EFAULT;
2010         }
2011
2012         /* If there is a command that loads a patch in the firmware
2013          * file, then enable the patch upon success, otherwise just
2014          * disable the manufacturer mode, for example patch activation
2015          * is not required when the default firmware patch file is used
2016          * because there are no patch data to load.
2017          */
2018         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
2019                 *disable_patch = 0;
2020
2021         cmd_param = *fw_ptr;
2022         *fw_ptr += cmd->plen;
2023         remain -= cmd->plen;
2024
2025         /* This reads the expected events when the above command is sent to the
2026          * device. Some vendor commands expects more than one events, for
2027          * example command status event followed by vendor specific event.
2028          * For this case, it only keeps the last expected event. so the command
2029          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
2030          * last expected event.
2031          */
2032         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
2033                 (*fw_ptr)++;
2034                 remain--;
2035
2036                 evt = (struct hci_event_hdr *)(*fw_ptr);
2037                 *fw_ptr += sizeof(*evt);
2038                 remain -= sizeof(*evt);
2039
2040                 if (remain < evt->plen) {
2041                         bt_dev_err(hdev, "Intel fw corrupted: invalid evt len");
2042                         return -EFAULT;
2043                 }
2044
2045                 evt_param = *fw_ptr;
2046                 *fw_ptr += evt->plen;
2047                 remain -= evt->plen;
2048         }
2049
2050         /* Every HCI commands in the firmware file has its correspond event.
2051          * If event is not found or remain is smaller than zero, the firmware
2052          * file is corrupted.
2053          */
2054         if (!evt || !evt_param || remain < 0) {
2055                 bt_dev_err(hdev, "Intel fw corrupted: invalid evt read");
2056                 return -EFAULT;
2057         }
2058
2059         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
2060                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
2061         if (IS_ERR(skb)) {
2062                 bt_dev_err(hdev, "sending Intel patch command (0x%4.4x) failed (%ld)",
2063                            cmd->opcode, PTR_ERR(skb));
2064                 return PTR_ERR(skb);
2065         }
2066
2067         /* It ensures that the returned event matches the event data read from
2068          * the firmware file. At fist, it checks the length and then
2069          * the contents of the event.
2070          */
2071         if (skb->len != evt->plen) {
2072                 bt_dev_err(hdev, "mismatch event length (opcode 0x%4.4x)",
2073                            le16_to_cpu(cmd->opcode));
2074                 kfree_skb(skb);
2075                 return -EFAULT;
2076         }
2077
2078         if (memcmp(skb->data, evt_param, evt->plen)) {
2079                 bt_dev_err(hdev, "mismatch event parameter (opcode 0x%4.4x)",
2080                            le16_to_cpu(cmd->opcode));
2081                 kfree_skb(skb);
2082                 return -EFAULT;
2083         }
2084         kfree_skb(skb);
2085
2086         return 0;
2087 }
2088
2089 static int btusb_setup_intel(struct hci_dev *hdev)
2090 {
2091         struct sk_buff *skb;
2092         const struct firmware *fw;
2093         const u8 *fw_ptr;
2094         int disable_patch, err;
2095         struct intel_version ver;
2096
2097         BT_DBG("%s", hdev->name);
2098
2099         /* The controller has a bug with the first HCI command sent to it
2100          * returning number of completed commands as zero. This would stall the
2101          * command processing in the Bluetooth core.
2102          *
2103          * As a workaround, send HCI Reset command first which will reset the
2104          * number of completed commands and allow normal command processing
2105          * from now on.
2106          */
2107         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2108         if (IS_ERR(skb)) {
2109                 bt_dev_err(hdev, "sending initial HCI reset command failed (%ld)",
2110                            PTR_ERR(skb));
2111                 return PTR_ERR(skb);
2112         }
2113         kfree_skb(skb);
2114
2115         /* Read Intel specific controller version first to allow selection of
2116          * which firmware file to load.
2117          *
2118          * The returned information are hardware variant and revision plus
2119          * firmware variant, revision and build number.
2120          */
2121         err = btintel_read_version(hdev, &ver);
2122         if (err)
2123                 return err;
2124
2125         bt_dev_info(hdev, "read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
2126                     ver.hw_platform, ver.hw_variant, ver.hw_revision,
2127                     ver.fw_variant,  ver.fw_revision, ver.fw_build_num,
2128                     ver.fw_build_ww, ver.fw_build_yy, ver.fw_patch_num);
2129
2130         /* fw_patch_num indicates the version of patch the device currently
2131          * have. If there is no patch data in the device, it is always 0x00.
2132          * So, if it is other than 0x00, no need to patch the device again.
2133          */
2134         if (ver.fw_patch_num) {
2135                 bt_dev_info(hdev, "Intel device is already patched. "
2136                             "patch num: %02x", ver.fw_patch_num);
2137                 goto complete;
2138         }
2139
2140         /* Opens the firmware patch file based on the firmware version read
2141          * from the controller. If it fails to open the matching firmware
2142          * patch file, it tries to open the default firmware patch file.
2143          * If no patch file is found, allow the device to operate without
2144          * a patch.
2145          */
2146         fw = btusb_setup_intel_get_fw(hdev, &ver);
2147         if (!fw)
2148                 goto complete;
2149         fw_ptr = fw->data;
2150
2151         /* Enable the manufacturer mode of the controller.
2152          * Only while this mode is enabled, the driver can download the
2153          * firmware patch data and configuration parameters.
2154          */
2155         err = btintel_enter_mfg(hdev);
2156         if (err) {
2157                 release_firmware(fw);
2158                 return err;
2159         }
2160
2161         disable_patch = 1;
2162
2163         /* The firmware data file consists of list of Intel specific HCI
2164          * commands and its expected events. The first byte indicates the
2165          * type of the message, either HCI command or HCI event.
2166          *
2167          * It reads the command and its expected event from the firmware file,
2168          * and send to the controller. Once __hci_cmd_sync_ev() returns,
2169          * the returned event is compared with the event read from the firmware
2170          * file and it will continue until all the messages are downloaded to
2171          * the controller.
2172          *
2173          * Once the firmware patching is completed successfully,
2174          * the manufacturer mode is disabled with reset and activating the
2175          * downloaded patch.
2176          *
2177          * If the firmware patching fails, the manufacturer mode is
2178          * disabled with reset and deactivating the patch.
2179          *
2180          * If the default patch file is used, no reset is done when disabling
2181          * the manufacturer.
2182          */
2183         while (fw->size > fw_ptr - fw->data) {
2184                 int ret;
2185
2186                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
2187                                                  &disable_patch);
2188                 if (ret < 0)
2189                         goto exit_mfg_deactivate;
2190         }
2191
2192         release_firmware(fw);
2193
2194         if (disable_patch)
2195                 goto exit_mfg_disable;
2196
2197         /* Patching completed successfully and disable the manufacturer mode
2198          * with reset and activate the downloaded firmware patches.
2199          */
2200         err = btintel_exit_mfg(hdev, true, true);
2201         if (err)
2202                 return err;
2203
2204         /* Need build number for downloaded fw patches in
2205          * every power-on boot
2206          */
2207        err = btintel_read_version(hdev, &ver);
2208        if (err)
2209                return err;
2210        bt_dev_info(hdev, "Intel BT fw patch 0x%02x completed & activated",
2211                    ver.fw_patch_num);
2212
2213         goto complete;
2214
2215 exit_mfg_disable:
2216         /* Disable the manufacturer mode without reset */
2217         err = btintel_exit_mfg(hdev, false, false);
2218         if (err)
2219                 return err;
2220
2221         bt_dev_info(hdev, "Intel firmware patch completed");
2222
2223         goto complete;
2224
2225 exit_mfg_deactivate:
2226         release_firmware(fw);
2227
2228         /* Patching failed. Disable the manufacturer mode with reset and
2229          * deactivate the downloaded firmware patches.
2230          */
2231         err = btintel_exit_mfg(hdev, true, false);
2232         if (err)
2233                 return err;
2234
2235         bt_dev_info(hdev, "Intel firmware patch completed and deactivated");
2236
2237 complete:
2238         /* Set the event mask for Intel specific vendor events. This enables
2239          * a few extra events that are useful during general operation.
2240          */
2241         btintel_set_event_mask_mfg(hdev, false);
2242
2243         btintel_check_bdaddr(hdev);
2244         return 0;
2245 }
2246
2247 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
2248 {
2249         struct sk_buff *skb;
2250         struct hci_event_hdr *hdr;
2251         struct hci_ev_cmd_complete *evt;
2252
2253         skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_KERNEL);
2254         if (!skb)
2255                 return -ENOMEM;
2256
2257         hdr = skb_put(skb, sizeof(*hdr));
2258         hdr->evt = HCI_EV_CMD_COMPLETE;
2259         hdr->plen = sizeof(*evt) + 1;
2260
2261         evt = skb_put(skb, sizeof(*evt));
2262         evt->ncmd = 0x01;
2263         evt->opcode = cpu_to_le16(opcode);
2264
2265         skb_put_u8(skb, 0x00);
2266
2267         hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
2268
2269         return hci_recv_frame(hdev, skb);
2270 }
2271
2272 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
2273                                  int count)
2274 {
2275         /* When the device is in bootloader mode, then it can send
2276          * events via the bulk endpoint. These events are treated the
2277          * same way as the ones received from the interrupt endpoint.
2278          */
2279         if (test_bit(BTUSB_BOOTLOADER, &data->flags))
2280                 return btusb_recv_intr(data, buffer, count);
2281
2282         return btusb_recv_bulk(data, buffer, count);
2283 }
2284
2285 static void btusb_intel_bootup(struct btusb_data *data, const void *ptr,
2286                                unsigned int len)
2287 {
2288         const struct intel_bootup *evt = ptr;
2289
2290         if (len != sizeof(*evt))
2291                 return;
2292
2293         if (test_and_clear_bit(BTUSB_BOOTING, &data->flags))
2294                 wake_up_bit(&data->flags, BTUSB_BOOTING);
2295 }
2296
2297 static void btusb_intel_secure_send_result(struct btusb_data *data,
2298                                            const void *ptr, unsigned int len)
2299 {
2300         const struct intel_secure_send_result *evt = ptr;
2301
2302         if (len != sizeof(*evt))
2303                 return;
2304
2305         if (evt->result)
2306                 set_bit(BTUSB_FIRMWARE_FAILED, &data->flags);
2307
2308         if (test_and_clear_bit(BTUSB_DOWNLOADING, &data->flags) &&
2309             test_bit(BTUSB_FIRMWARE_LOADED, &data->flags))
2310                 wake_up_bit(&data->flags, BTUSB_DOWNLOADING);
2311 }
2312
2313 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
2314 {
2315         struct btusb_data *data = hci_get_drvdata(hdev);
2316
2317         if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
2318                 struct hci_event_hdr *hdr = (void *)skb->data;
2319
2320                 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
2321                     hdr->plen > 0) {
2322                         const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
2323                         unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
2324
2325                         switch (skb->data[2]) {
2326                         case 0x02:
2327                                 /* When switching to the operational firmware
2328                                  * the device sends a vendor specific event
2329                                  * indicating that the bootup completed.
2330                                  */
2331                                 btusb_intel_bootup(data, ptr, len);
2332                                 break;
2333                         case 0x06:
2334                                 /* When the firmware loading completes the
2335                                  * device sends out a vendor specific event
2336                                  * indicating the result of the firmware
2337                                  * loading.
2338                                  */
2339                                 btusb_intel_secure_send_result(data, ptr, len);
2340                                 break;
2341                         }
2342                 }
2343         }
2344
2345         return hci_recv_frame(hdev, skb);
2346 }
2347
2348 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
2349 {
2350         struct btusb_data *data = hci_get_drvdata(hdev);
2351         struct urb *urb;
2352
2353         BT_DBG("%s", hdev->name);
2354
2355         switch (hci_skb_pkt_type(skb)) {
2356         case HCI_COMMAND_PKT:
2357                 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
2358                         struct hci_command_hdr *cmd = (void *)skb->data;
2359                         __u16 opcode = le16_to_cpu(cmd->opcode);
2360
2361                         /* When in bootloader mode and the command 0xfc09
2362                          * is received, it needs to be send down the
2363                          * bulk endpoint. So allocate a bulk URB instead.
2364                          */
2365                         if (opcode == 0xfc09)
2366                                 urb = alloc_bulk_urb(hdev, skb);
2367                         else
2368                                 urb = alloc_ctrl_urb(hdev, skb);
2369
2370                         /* When the 0xfc01 command is issued to boot into
2371                          * the operational firmware, it will actually not
2372                          * send a command complete event. To keep the flow
2373                          * control working inject that event here.
2374                          */
2375                         if (opcode == 0xfc01)
2376                                 inject_cmd_complete(hdev, opcode);
2377                 } else {
2378                         urb = alloc_ctrl_urb(hdev, skb);
2379                 }
2380                 if (IS_ERR(urb))
2381                         return PTR_ERR(urb);
2382
2383                 hdev->stat.cmd_tx++;
2384                 return submit_or_queue_tx_urb(hdev, urb);
2385
2386         case HCI_ACLDATA_PKT:
2387                 urb = alloc_bulk_urb(hdev, skb);
2388                 if (IS_ERR(urb))
2389                         return PTR_ERR(urb);
2390
2391                 hdev->stat.acl_tx++;
2392                 return submit_or_queue_tx_urb(hdev, urb);
2393
2394         case HCI_SCODATA_PKT:
2395                 if (hci_conn_num(hdev, SCO_LINK) < 1)
2396                         return -ENODEV;
2397
2398                 urb = alloc_isoc_urb(hdev, skb);
2399                 if (IS_ERR(urb))
2400                         return PTR_ERR(urb);
2401
2402                 hdev->stat.sco_tx++;
2403                 return submit_tx_urb(hdev, urb);
2404         }
2405
2406         return -EILSEQ;
2407 }
2408
2409 static int btusb_setup_intel_new_get_fw_name(struct intel_version *ver,
2410                                              struct intel_boot_params *params,
2411                                              char *fw_name, size_t len,
2412                                              const char *suffix)
2413 {
2414         switch (ver->hw_variant) {
2415         case 0x0b:      /* SfP */
2416         case 0x0c:      /* WsP */
2417                 snprintf(fw_name, len, "intel/ibt-%u-%u.%s",
2418                         le16_to_cpu(ver->hw_variant),
2419                         le16_to_cpu(params->dev_revid),
2420                         suffix);
2421                 break;
2422         case 0x11:      /* JfP */
2423         case 0x12:      /* ThP */
2424         case 0x13:      /* HrP */
2425         case 0x14:      /* CcP */
2426                 snprintf(fw_name, len, "intel/ibt-%u-%u-%u.%s",
2427                         le16_to_cpu(ver->hw_variant),
2428                         le16_to_cpu(ver->hw_revision),
2429                         le16_to_cpu(ver->fw_revision),
2430                         suffix);
2431                 break;
2432         default:
2433                 return -EINVAL;
2434         }
2435
2436         return 0;
2437 }
2438
2439 static void btusb_setup_intel_newgen_get_fw_name(const struct intel_version_tlv *ver_tlv,
2440                                                  char *fw_name, size_t len,
2441                                                  const char *suffix)
2442 {
2443         /* The firmware file name for new generation controllers will be
2444          * ibt-<cnvi_top type+cnvi_top step>-<cnvr_top type+cnvr_top step>
2445          */
2446         snprintf(fw_name, len, "intel/ibt-%04x-%04x.%s",
2447                  INTEL_CNVX_TOP_PACK_SWAB(INTEL_CNVX_TOP_TYPE(ver_tlv->cnvi_top),
2448                                           INTEL_CNVX_TOP_STEP(ver_tlv->cnvi_top)),
2449                  INTEL_CNVX_TOP_PACK_SWAB(INTEL_CNVX_TOP_TYPE(ver_tlv->cnvr_top),
2450                                           INTEL_CNVX_TOP_STEP(ver_tlv->cnvr_top)),
2451                  suffix);
2452 }
2453
2454 static int btusb_download_wait(struct hci_dev *hdev, ktime_t calltime, int msec)
2455 {
2456         struct btusb_data *data = hci_get_drvdata(hdev);
2457         ktime_t delta, rettime;
2458         unsigned long long duration;
2459         int err;
2460
2461         set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2462
2463         bt_dev_info(hdev, "Waiting for firmware download to complete");
2464
2465         err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
2466                                   TASK_INTERRUPTIBLE,
2467                                   msecs_to_jiffies(msec));
2468         if (err == -EINTR) {
2469                 bt_dev_err(hdev, "Firmware loading interrupted");
2470                 return err;
2471         }
2472
2473         if (err) {
2474                 bt_dev_err(hdev, "Firmware loading timeout");
2475                 return -ETIMEDOUT;
2476         }
2477
2478         if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) {
2479                 bt_dev_err(hdev, "Firmware loading failed");
2480                 return -ENOEXEC;
2481         }
2482
2483         rettime = ktime_get();
2484         delta = ktime_sub(rettime, calltime);
2485         duration = (unsigned long long)ktime_to_ns(delta) >> 10;
2486
2487         bt_dev_info(hdev, "Firmware loaded in %llu usecs", duration);
2488
2489         return 0;
2490 }
2491
2492 static int btusb_intel_download_firmware_newgen(struct hci_dev *hdev,
2493                                                 struct intel_version_tlv *ver,
2494                                                 u32 *boot_param)
2495 {
2496         const struct firmware *fw;
2497         char fwname[64];
2498         int err;
2499         struct btusb_data *data = hci_get_drvdata(hdev);
2500         ktime_t calltime;
2501
2502         if (!ver || !boot_param)
2503                 return -EINVAL;
2504
2505         /* The firmware variant determines if the device is in bootloader
2506          * mode or is running operational firmware. The value 0x03 identifies
2507          * the bootloader and the value 0x23 identifies the operational
2508          * firmware.
2509          *
2510          * When the operational firmware is already present, then only
2511          * the check for valid Bluetooth device address is needed. This
2512          * determines if the device will be added as configured or
2513          * unconfigured controller.
2514          *
2515          * It is not possible to use the Secure Boot Parameters in this
2516          * case since that command is only available in bootloader mode.
2517          */
2518         if (ver->img_type == 0x03) {
2519                 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2520                 btintel_check_bdaddr(hdev);
2521         }
2522
2523         /* If the OTP has no valid Bluetooth device address, then there will
2524          * also be no valid address for the operational firmware.
2525          */
2526         if (!bacmp(&ver->otp_bd_addr, BDADDR_ANY)) {
2527                 bt_dev_info(hdev, "No device address configured");
2528                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2529         }
2530
2531         btusb_setup_intel_newgen_get_fw_name(ver, fwname, sizeof(fwname), "sfi");
2532         err = firmware_request_nowarn(&fw, fwname, &hdev->dev);
2533         if (err < 0) {
2534                 if (!test_bit(BTUSB_BOOTLOADER, &data->flags)) {
2535                         /* Firmware has already been loaded */
2536                         set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2537                         return 0;
2538                 }
2539
2540                 bt_dev_err(hdev, "Failed to load Intel firmware file %s (%d)",
2541                            fwname, err);
2542
2543                 return err;
2544         }
2545
2546         bt_dev_info(hdev, "Found device firmware: %s", fwname);
2547
2548         if (fw->size < 644) {
2549                 bt_dev_err(hdev, "Invalid size of firmware file (%zu)",
2550                            fw->size);
2551                 err = -EBADF;
2552                 goto done;
2553         }
2554
2555         calltime = ktime_get();
2556
2557         set_bit(BTUSB_DOWNLOADING, &data->flags);
2558
2559         /* Start firmware downloading and get boot parameter */
2560         err = btintel_download_firmware_newgen(hdev, ver, fw, boot_param,
2561                                                INTEL_HW_VARIANT(ver->cnvi_bt),
2562                                                ver->sbe_type);
2563         if (err < 0) {
2564                 if (err == -EALREADY) {
2565                         /* Firmware has already been loaded */
2566                         set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2567                         err = 0;
2568                         goto done;
2569                 }
2570
2571                 /* When FW download fails, send Intel Reset to retry
2572                  * FW download.
2573                  */
2574                 btintel_reset_to_bootloader(hdev);
2575                 goto done;
2576         }
2577
2578         /* Before switching the device into operational mode and with that
2579          * booting the loaded firmware, wait for the bootloader notification
2580          * that all fragments have been successfully received.
2581          *
2582          * When the event processing receives the notification, then the
2583          * BTUSB_DOWNLOADING flag will be cleared.
2584          *
2585          * The firmware loading should not take longer than 5 seconds
2586          * and thus just timeout if that happens and fail the setup
2587          * of this device.
2588          */
2589         err = btusb_download_wait(hdev, calltime, 5000);
2590         if (err == -ETIMEDOUT)
2591                 btintel_reset_to_bootloader(hdev);
2592
2593 done:
2594         release_firmware(fw);
2595         return err;
2596 }
2597
2598 static int btusb_intel_download_firmware(struct hci_dev *hdev,
2599                                          struct intel_version *ver,
2600                                          struct intel_boot_params *params,
2601                                          u32 *boot_param)
2602 {
2603         const struct firmware *fw;
2604         char fwname[64];
2605         int err;
2606         struct btusb_data *data = hci_get_drvdata(hdev);
2607         ktime_t calltime;
2608
2609         if (!ver || !params)
2610                 return -EINVAL;
2611
2612         /* The firmware variant determines if the device is in bootloader
2613          * mode or is running operational firmware. The value 0x06 identifies
2614          * the bootloader and the value 0x23 identifies the operational
2615          * firmware.
2616          *
2617          * When the operational firmware is already present, then only
2618          * the check for valid Bluetooth device address is needed. This
2619          * determines if the device will be added as configured or
2620          * unconfigured controller.
2621          *
2622          * It is not possible to use the Secure Boot Parameters in this
2623          * case since that command is only available in bootloader mode.
2624          */
2625         if (ver->fw_variant == 0x23) {
2626                 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2627                 btintel_check_bdaddr(hdev);
2628
2629                 /* SfP and WsP don't seem to update the firmware version on file
2630                  * so version checking is currently possible.
2631                  */
2632                 switch (ver->hw_variant) {
2633                 case 0x0b:      /* SfP */
2634                 case 0x0c:      /* WsP */
2635                         return 0;
2636                 }
2637
2638                 /* Proceed to download to check if the version matches */
2639                 goto download;
2640         }
2641
2642         /* Read the secure boot parameters to identify the operating
2643          * details of the bootloader.
2644          */
2645         err = btintel_read_boot_params(hdev, params);
2646         if (err)
2647                 return err;
2648
2649         /* It is required that every single firmware fragment is acknowledged
2650          * with a command complete event. If the boot parameters indicate
2651          * that this bootloader does not send them, then abort the setup.
2652          */
2653         if (params->limited_cce != 0x00) {
2654                 bt_dev_err(hdev, "Unsupported Intel firmware loading method (%u)",
2655                            params->limited_cce);
2656                 return -EINVAL;
2657         }
2658
2659         /* If the OTP has no valid Bluetooth device address, then there will
2660          * also be no valid address for the operational firmware.
2661          */
2662         if (!bacmp(&params->otp_bdaddr, BDADDR_ANY)) {
2663                 bt_dev_info(hdev, "No device address configured");
2664                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2665         }
2666
2667 download:
2668         /* With this Intel bootloader only the hardware variant and device
2669          * revision information are used to select the right firmware for SfP
2670          * and WsP.
2671          *
2672          * The firmware filename is ibt-<hw_variant>-<dev_revid>.sfi.
2673          *
2674          * Currently the supported hardware variants are:
2675          *   11 (0x0b) for iBT3.0 (LnP/SfP)
2676          *   12 (0x0c) for iBT3.5 (WsP)
2677          *
2678          * For ThP/JfP and for future SKU's, the FW name varies based on HW
2679          * variant, HW revision and FW revision, as these are dependent on CNVi
2680          * and RF Combination.
2681          *
2682          *   17 (0x11) for iBT3.5 (JfP)
2683          *   18 (0x12) for iBT3.5 (ThP)
2684          *
2685          * The firmware file name for these will be
2686          * ibt-<hw_variant>-<hw_revision>-<fw_revision>.sfi.
2687          *
2688          */
2689         err = btusb_setup_intel_new_get_fw_name(ver, params, fwname,
2690                                                 sizeof(fwname), "sfi");
2691         if (err < 0) {
2692                 if (!test_bit(BTUSB_BOOTLOADER, &data->flags)) {
2693                         /* Firmware has already been loaded */
2694                         set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2695                         return 0;
2696                 }
2697
2698                 bt_dev_err(hdev, "Unsupported Intel firmware naming");
2699                 return -EINVAL;
2700         }
2701
2702         err = firmware_request_nowarn(&fw, fwname, &hdev->dev);
2703         if (err < 0) {
2704                 if (!test_bit(BTUSB_BOOTLOADER, &data->flags)) {
2705                         /* Firmware has already been loaded */
2706                         set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2707                         return 0;
2708                 }
2709
2710                 bt_dev_err(hdev, "Failed to load Intel firmware file %s (%d)",
2711                            fwname, err);
2712                 return err;
2713         }
2714
2715         bt_dev_info(hdev, "Found device firmware: %s", fwname);
2716
2717         if (fw->size < 644) {
2718                 bt_dev_err(hdev, "Invalid size of firmware file (%zu)",
2719                            fw->size);
2720                 err = -EBADF;
2721                 goto done;
2722         }
2723
2724         calltime = ktime_get();
2725
2726         set_bit(BTUSB_DOWNLOADING, &data->flags);
2727
2728         /* Start firmware downloading and get boot parameter */
2729         err = btintel_download_firmware(hdev, ver, fw, boot_param);
2730         if (err < 0) {
2731                 if (err == -EALREADY) {
2732                         /* Firmware has already been loaded */
2733                         set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2734                         err = 0;
2735                         goto done;
2736                 }
2737
2738                 /* When FW download fails, send Intel Reset to retry
2739                  * FW download.
2740                  */
2741                 btintel_reset_to_bootloader(hdev);
2742                 goto done;
2743         }
2744
2745         /* Before switching the device into operational mode and with that
2746          * booting the loaded firmware, wait for the bootloader notification
2747          * that all fragments have been successfully received.
2748          *
2749          * When the event processing receives the notification, then the
2750          * BTUSB_DOWNLOADING flag will be cleared.
2751          *
2752          * The firmware loading should not take longer than 5 seconds
2753          * and thus just timeout if that happens and fail the setup
2754          * of this device.
2755          */
2756         err = btusb_download_wait(hdev, calltime, 5000);
2757         if (err == -ETIMEDOUT)
2758                 btintel_reset_to_bootloader(hdev);
2759
2760 done:
2761         release_firmware(fw);
2762         return err;
2763 }
2764
2765 static int btusb_boot_wait(struct hci_dev *hdev, ktime_t calltime, int msec)
2766 {
2767         struct btusb_data *data = hci_get_drvdata(hdev);
2768         ktime_t delta, rettime;
2769         unsigned long long duration;
2770         int err;
2771
2772         bt_dev_info(hdev, "Waiting for device to boot");
2773
2774         err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING,
2775                                   TASK_INTERRUPTIBLE,
2776                                   msecs_to_jiffies(msec));
2777         if (err == -EINTR) {
2778                 bt_dev_err(hdev, "Device boot interrupted");
2779                 return -EINTR;
2780         }
2781
2782         if (err) {
2783                 bt_dev_err(hdev, "Device boot timeout");
2784                 return -ETIMEDOUT;
2785         }
2786
2787         rettime = ktime_get();
2788         delta = ktime_sub(rettime, calltime);
2789         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2790
2791         bt_dev_info(hdev, "Device booted in %llu usecs", duration);
2792
2793         return 0;
2794 }
2795
2796 static int btusb_intel_boot(struct hci_dev *hdev, u32 boot_addr)
2797 {
2798         struct btusb_data *data = hci_get_drvdata(hdev);
2799         ktime_t calltime;
2800         int err;
2801
2802         calltime = ktime_get();
2803
2804         set_bit(BTUSB_BOOTING, &data->flags);
2805
2806         err = btintel_send_intel_reset(hdev, boot_addr);
2807         if (err) {
2808                 bt_dev_err(hdev, "Intel Soft Reset failed (%d)", err);
2809                 btintel_reset_to_bootloader(hdev);
2810                 return err;
2811         }
2812
2813         /* The bootloader will not indicate when the device is ready. This
2814          * is done by the operational firmware sending bootup notification.
2815          *
2816          * Booting into operational firmware should not take longer than
2817          * 1 second. However if that happens, then just fail the setup
2818          * since something went wrong.
2819          */
2820         err = btusb_boot_wait(hdev, calltime, 1000);
2821         if (err == -ETIMEDOUT)
2822                 btintel_reset_to_bootloader(hdev);
2823
2824         return err;
2825 }
2826
2827 static int btusb_setup_intel_new(struct hci_dev *hdev)
2828 {
2829         struct btusb_data *data = hci_get_drvdata(hdev);
2830         struct intel_version ver;
2831         struct intel_boot_params params;
2832         u32 boot_param;
2833         char ddcname[64];
2834         int err;
2835         struct intel_debug_features features;
2836
2837         BT_DBG("%s", hdev->name);
2838
2839         /* Set the default boot parameter to 0x0 and it is updated to
2840          * SKU specific boot parameter after reading Intel_Write_Boot_Params
2841          * command while downloading the firmware.
2842          */
2843         boot_param = 0x00000000;
2844
2845         /* Read the Intel version information to determine if the device
2846          * is in bootloader mode or if it already has operational firmware
2847          * loaded.
2848          */
2849         err = btintel_read_version(hdev, &ver);
2850         if (err) {
2851                 bt_dev_err(hdev, "Intel Read version failed (%d)", err);
2852                 btintel_reset_to_bootloader(hdev);
2853                 return err;
2854         }
2855
2856         err = btintel_version_info(hdev, &ver);
2857         if (err)
2858                 return err;
2859
2860         err = btusb_intel_download_firmware(hdev, &ver, &params, &boot_param);
2861         if (err)
2862                 return err;
2863
2864         /* controller is already having an operational firmware */
2865         if (ver.fw_variant == 0x23)
2866                 goto finish;
2867
2868         err = btusb_intel_boot(hdev, boot_param);
2869         if (err)
2870                 return err;
2871
2872         clear_bit(BTUSB_BOOTLOADER, &data->flags);
2873
2874         err = btusb_setup_intel_new_get_fw_name(&ver, &params, ddcname,
2875                                                 sizeof(ddcname), "ddc");
2876
2877         if (err < 0) {
2878                 bt_dev_err(hdev, "Unsupported Intel firmware naming");
2879         } else {
2880                 /* Once the device is running in operational mode, it needs to
2881                  * apply the device configuration (DDC) parameters.
2882                  *
2883                  * The device can work without DDC parameters, so even if it
2884                  * fails to load the file, no need to fail the setup.
2885                  */
2886                 btintel_load_ddc_config(hdev, ddcname);
2887         }
2888
2889         /* Read the Intel supported features and if new exception formats
2890          * supported, need to load the additional DDC config to enable.
2891          */
2892         btintel_read_debug_features(hdev, &features);
2893
2894         /* Set DDC mask for available debug features */
2895         btintel_set_debug_features(hdev, &features);
2896
2897         /* Read the Intel version information after loading the FW  */
2898         err = btintel_read_version(hdev, &ver);
2899         if (err)
2900                 return err;
2901
2902         btintel_version_info(hdev, &ver);
2903
2904 finish:
2905         /* All Intel controllers that support the Microsoft vendor
2906          * extension are using 0xFC1E for VsMsftOpCode.
2907          */
2908         switch (ver.hw_variant) {
2909         case 0x11:      /* JfP */
2910         case 0x12:      /* ThP */
2911         case 0x13:      /* HrP */
2912         case 0x14:      /* CcP */
2913                 hci_set_msft_opcode(hdev, 0xFC1E);
2914                 break;
2915         }
2916
2917         /* Set the event mask for Intel specific vendor events. This enables
2918          * a few extra events that are useful during general operation. It
2919          * does not enable any debugging related events.
2920          *
2921          * The device will function correctly without these events enabled
2922          * and thus no need to fail the setup.
2923          */
2924         btintel_set_event_mask(hdev, false);
2925
2926         return 0;
2927 }
2928
2929 static int btusb_setup_intel_newgen(struct hci_dev *hdev)
2930 {
2931         struct btusb_data *data = hci_get_drvdata(hdev);
2932         u32 boot_param;
2933         char ddcname[64];
2934         int err;
2935         struct intel_debug_features features;
2936         struct intel_version_tlv version;
2937
2938         bt_dev_dbg(hdev, "");
2939
2940         /* Set the default boot parameter to 0x0 and it is updated to
2941          * SKU specific boot parameter after reading Intel_Write_Boot_Params
2942          * command while downloading the firmware.
2943          */
2944         boot_param = 0x00000000;
2945
2946         /* Read the Intel version information to determine if the device
2947          * is in bootloader mode or if it already has operational firmware
2948          * loaded.
2949          */
2950         err = btintel_read_version_tlv(hdev, &version);
2951         if (err) {
2952                 bt_dev_err(hdev, "Intel Read version failed (%d)", err);
2953                 btintel_reset_to_bootloader(hdev);
2954                 return err;
2955         }
2956
2957         err = btintel_version_info_tlv(hdev, &version);
2958         if (err)
2959                 return err;
2960
2961         err = btusb_intel_download_firmware_newgen(hdev, &version, &boot_param);
2962         if (err)
2963                 return err;
2964
2965         /* check if controller is already having an operational firmware */
2966         if (version.img_type == 0x03)
2967                 goto finish;
2968
2969         err = btusb_intel_boot(hdev, boot_param);
2970         if (err)
2971                 return err;
2972
2973         clear_bit(BTUSB_BOOTLOADER, &data->flags);
2974
2975         btusb_setup_intel_newgen_get_fw_name(&version, ddcname, sizeof(ddcname),
2976                                              "ddc");
2977         /* Once the device is running in operational mode, it needs to
2978          * apply the device configuration (DDC) parameters.
2979          *
2980          * The device can work without DDC parameters, so even if it
2981          * fails to load the file, no need to fail the setup.
2982          */
2983         btintel_load_ddc_config(hdev, ddcname);
2984
2985         /* Read the Intel supported features and if new exception formats
2986          * supported, need to load the additional DDC config to enable.
2987          */
2988         btintel_read_debug_features(hdev, &features);
2989
2990         /* Set DDC mask for available debug features */
2991         btintel_set_debug_features(hdev, &features);
2992
2993         /* Read the Intel version information after loading the FW  */
2994         err = btintel_read_version_tlv(hdev, &version);
2995         if (err)
2996                 return err;
2997
2998         btintel_version_info_tlv(hdev, &version);
2999
3000 finish:
3001         /* Set the event mask for Intel specific vendor events. This enables
3002          * a few extra events that are useful during general operation. It
3003          * does not enable any debugging related events.
3004          *
3005          * The device will function correctly without these events enabled
3006          * and thus no need to fail the setup.
3007          */
3008         btintel_set_event_mask(hdev, false);
3009
3010         return 0;
3011 }
3012 static int btusb_shutdown_intel(struct hci_dev *hdev)
3013 {
3014         struct sk_buff *skb;
3015         long ret;
3016
3017         /* In the shutdown sequence where Bluetooth is turned off followed
3018          * by WiFi being turned off, turning WiFi back on causes issue with
3019          * the RF calibration.
3020          *
3021          * To ensure that any RF activity has been stopped, issue HCI Reset
3022          * command to clear all ongoing activity including advertising,
3023          * scanning etc.
3024          */
3025         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
3026         if (IS_ERR(skb)) {
3027                 ret = PTR_ERR(skb);
3028                 bt_dev_err(hdev, "HCI reset during shutdown failed");
3029                 return ret;
3030         }
3031         kfree_skb(skb);
3032
3033         /* Some platforms have an issue with BT LED when the interface is
3034          * down or BT radio is turned off, which takes 5 seconds to BT LED
3035          * goes off. This command turns off the BT LED immediately.
3036          */
3037         skb = __hci_cmd_sync(hdev, 0xfc3f, 0, NULL, HCI_INIT_TIMEOUT);
3038         if (IS_ERR(skb)) {
3039                 ret = PTR_ERR(skb);
3040                 bt_dev_err(hdev, "turning off Intel device LED failed");
3041                 return ret;
3042         }
3043         kfree_skb(skb);
3044
3045         return 0;
3046 }
3047
3048 static int btusb_shutdown_intel_new(struct hci_dev *hdev)
3049 {
3050         struct sk_buff *skb;
3051
3052         /* Send HCI Reset to the controller to stop any BT activity which
3053          * were triggered. This will help to save power and maintain the
3054          * sync b/w Host and controller
3055          */
3056         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
3057         if (IS_ERR(skb)) {
3058                 bt_dev_err(hdev, "HCI reset during shutdown failed");
3059                 return PTR_ERR(skb);
3060         }
3061         kfree_skb(skb);
3062
3063         return 0;
3064 }
3065
3066 #define FIRMWARE_MT7663         "mediatek/mt7663pr2h.bin"
3067 #define FIRMWARE_MT7668         "mediatek/mt7668pr2h.bin"
3068
3069 #define HCI_WMT_MAX_EVENT_SIZE          64
3070 /* It is for mt79xx download rom patch*/
3071 #define MTK_FW_ROM_PATCH_HEADER_SIZE    32
3072 #define MTK_FW_ROM_PATCH_GD_SIZE        64
3073 #define MTK_FW_ROM_PATCH_SEC_MAP_SIZE   64
3074 #define MTK_SEC_MAP_COMMON_SIZE 12
3075 #define MTK_SEC_MAP_NEED_SEND_SIZE      52
3076
3077 enum {
3078         BTMTK_WMT_PATCH_DWNLD = 0x1,
3079         BTMTK_WMT_FUNC_CTRL = 0x6,
3080         BTMTK_WMT_RST = 0x7,
3081         BTMTK_WMT_SEMAPHORE = 0x17,
3082 };
3083
3084 enum {
3085         BTMTK_WMT_INVALID,
3086         BTMTK_WMT_PATCH_UNDONE,
3087         BTMTK_WMT_PATCH_PROGRESS,
3088         BTMTK_WMT_PATCH_DONE,
3089         BTMTK_WMT_ON_UNDONE,
3090         BTMTK_WMT_ON_DONE,
3091         BTMTK_WMT_ON_PROGRESS,
3092 };
3093
3094 struct btmtk_wmt_hdr {
3095         u8      dir;
3096         u8      op;
3097         __le16  dlen;
3098         u8      flag;
3099 } __packed;
3100
3101 struct btmtk_hci_wmt_cmd {
3102         struct btmtk_wmt_hdr hdr;
3103         u8 data[];
3104 } __packed;
3105
3106 struct btmtk_hci_wmt_evt {
3107         struct hci_event_hdr hhdr;
3108         struct btmtk_wmt_hdr whdr;
3109 } __packed;
3110
3111 struct btmtk_hci_wmt_evt_funcc {
3112         struct btmtk_hci_wmt_evt hwhdr;
3113         __be16 status;
3114 } __packed;
3115
3116 struct btmtk_tci_sleep {
3117         u8 mode;
3118         __le16 duration;
3119         __le16 host_duration;
3120         u8 host_wakeup_pin;
3121         u8 time_compensation;
3122 } __packed;
3123
3124 struct btmtk_hci_wmt_params {
3125         u8 op;
3126         u8 flag;
3127         u16 dlen;
3128         const void *data;
3129         u32 *status;
3130 };
3131
3132 struct btmtk_patch_header {
3133         u8 datetime[16];
3134         u8 platform[4];
3135         __le16 hwver;
3136         __le16 swver;
3137         __le32 magicnum;
3138 } __packed;
3139
3140 struct btmtk_global_desc {
3141         __le32 patch_ver;
3142         __le32 sub_sys;
3143         __le32 feature_opt;
3144         __le32 section_num;
3145 } __packed;
3146
3147 struct btmtk_section_map {
3148         __le32 sectype;
3149         __le32 secoffset;
3150         __le32 secsize;
3151         union {
3152                 __le32 u4SecSpec[13];
3153                 struct {
3154                         __le32 dlAddr;
3155                         __le32 dlsize;
3156                         __le32 seckeyidx;
3157                         __le32 alignlen;
3158                         __le32 sectype;
3159                         __le32 dlmodecrctype;
3160                         __le32 crc;
3161                         __le32 reserved[6];
3162                 } bin_info_spec;
3163         };
3164 } __packed;
3165
3166 static void btusb_mtk_wmt_recv(struct urb *urb)
3167 {
3168         struct hci_dev *hdev = urb->context;
3169         struct btusb_data *data = hci_get_drvdata(hdev);
3170         struct hci_event_hdr *hdr;
3171         struct sk_buff *skb;
3172         int err;
3173
3174         if (urb->status == 0 && urb->actual_length > 0) {
3175                 hdev->stat.byte_rx += urb->actual_length;
3176
3177                 /* WMT event shouldn't be fragmented and the size should be
3178                  * less than HCI_WMT_MAX_EVENT_SIZE.
3179                  */
3180                 skb = bt_skb_alloc(HCI_WMT_MAX_EVENT_SIZE, GFP_ATOMIC);
3181                 if (!skb) {
3182                         hdev->stat.err_rx++;
3183                         return;
3184                 }
3185
3186                 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
3187                 skb_put_data(skb, urb->transfer_buffer, urb->actual_length);
3188
3189                 hdr = (void *)skb->data;
3190                 /* Fix up the vendor event id with 0xff for vendor specific
3191                  * instead of 0xe4 so that event send via monitoring socket can
3192                  * be parsed properly.
3193                  */
3194                 hdr->evt = 0xff;
3195
3196                 /* When someone waits for the WMT event, the skb is being cloned
3197                  * and being processed the events from there then.
3198                  */
3199                 if (test_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags)) {
3200                         data->evt_skb = skb_clone(skb, GFP_ATOMIC);
3201                         if (!data->evt_skb) {
3202                                 kfree_skb(skb);
3203                                 return;
3204                         }
3205                 }
3206
3207                 err = hci_recv_frame(hdev, skb);
3208                 if (err < 0) {
3209                         kfree_skb(data->evt_skb);
3210                         data->evt_skb = NULL;
3211                         return;
3212                 }
3213
3214                 if (test_and_clear_bit(BTUSB_TX_WAIT_VND_EVT,
3215                                        &data->flags)) {
3216                         /* Barrier to sync with other CPUs */
3217                         smp_mb__after_atomic();
3218                         wake_up_bit(&data->flags,
3219                                     BTUSB_TX_WAIT_VND_EVT);
3220                 }
3221                 return;
3222         } else if (urb->status == -ENOENT) {
3223                 /* Avoid suspend failed when usb_kill_urb */
3224                 return;
3225         }
3226
3227         usb_mark_last_busy(data->udev);
3228
3229         /* The URB complete handler is still called with urb->actual_length = 0
3230          * when the event is not available, so we should keep re-submitting
3231          * URB until WMT event returns, Also, It's necessary to wait some time
3232          * between the two consecutive control URBs to relax the target device
3233          * to generate the event. Otherwise, the WMT event cannot return from
3234          * the device successfully.
3235          */
3236         udelay(500);
3237
3238         usb_anchor_urb(urb, &data->ctrl_anchor);
3239         err = usb_submit_urb(urb, GFP_ATOMIC);
3240         if (err < 0) {
3241                 /* -EPERM: urb is being killed;
3242                  * -ENODEV: device got disconnected
3243                  */
3244                 if (err != -EPERM && err != -ENODEV)
3245                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
3246                                    urb, -err);
3247                 usb_unanchor_urb(urb);
3248         }
3249 }
3250
3251 static int btusb_mtk_submit_wmt_recv_urb(struct hci_dev *hdev)
3252 {
3253         struct btusb_data *data = hci_get_drvdata(hdev);
3254         struct usb_ctrlrequest *dr;
3255         unsigned char *buf;
3256         int err, size = 64;
3257         unsigned int pipe;
3258         struct urb *urb;
3259
3260         urb = usb_alloc_urb(0, GFP_KERNEL);
3261         if (!urb)
3262                 return -ENOMEM;
3263
3264         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
3265         if (!dr) {
3266                 usb_free_urb(urb);
3267                 return -ENOMEM;
3268         }
3269
3270         dr->bRequestType = USB_TYPE_VENDOR | USB_DIR_IN;
3271         dr->bRequest     = 1;
3272         dr->wIndex       = cpu_to_le16(0);
3273         dr->wValue       = cpu_to_le16(48);
3274         dr->wLength      = cpu_to_le16(size);
3275
3276         buf = kmalloc(size, GFP_KERNEL);
3277         if (!buf) {
3278                 kfree(dr);
3279                 usb_free_urb(urb);
3280                 return -ENOMEM;
3281         }
3282
3283         pipe = usb_rcvctrlpipe(data->udev, 0);
3284
3285         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
3286                              buf, size, btusb_mtk_wmt_recv, hdev);
3287
3288         urb->transfer_flags |= URB_FREE_BUFFER;
3289
3290         usb_anchor_urb(urb, &data->ctrl_anchor);
3291         err = usb_submit_urb(urb, GFP_KERNEL);
3292         if (err < 0) {
3293                 if (err != -EPERM && err != -ENODEV)
3294                         bt_dev_err(hdev, "urb %p submission failed (%d)",
3295                                    urb, -err);
3296                 usb_unanchor_urb(urb);
3297         }
3298
3299         usb_free_urb(urb);
3300
3301         return err;
3302 }
3303
3304 static int btusb_mtk_hci_wmt_sync(struct hci_dev *hdev,
3305                                   struct btmtk_hci_wmt_params *wmt_params)
3306 {
3307         struct btusb_data *data = hci_get_drvdata(hdev);
3308         struct btmtk_hci_wmt_evt_funcc *wmt_evt_funcc;
3309         u32 hlen, status = BTMTK_WMT_INVALID;
3310         struct btmtk_hci_wmt_evt *wmt_evt;
3311         struct btmtk_hci_wmt_cmd *wc;
3312         struct btmtk_wmt_hdr *hdr;
3313         int err;
3314
3315         /* Submit control IN URB on demand to process the WMT event */
3316         err = btusb_mtk_submit_wmt_recv_urb(hdev);
3317         if (err < 0)
3318                 return err;
3319
3320         /* Send the WMT command and wait until the WMT event returns */
3321         hlen = sizeof(*hdr) + wmt_params->dlen;
3322         if (hlen > 255)
3323                 return -EINVAL;
3324
3325         wc = kzalloc(hlen, GFP_KERNEL);
3326         if (!wc)
3327                 return -ENOMEM;
3328
3329         hdr = &wc->hdr;
3330         hdr->dir = 1;
3331         hdr->op = wmt_params->op;
3332         hdr->dlen = cpu_to_le16(wmt_params->dlen + 1);
3333         hdr->flag = wmt_params->flag;
3334         memcpy(wc->data, wmt_params->data, wmt_params->dlen);
3335
3336         set_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
3337
3338         err = __hci_cmd_send(hdev, 0xfc6f, hlen, wc);
3339
3340         if (err < 0) {
3341                 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
3342                 goto err_free_wc;
3343         }
3344
3345         /* The vendor specific WMT commands are all answered by a vendor
3346          * specific event and will have the Command Status or Command
3347          * Complete as with usual HCI command flow control.
3348          *
3349          * After sending the command, wait for BTUSB_TX_WAIT_VND_EVT
3350          * state to be cleared. The driver specific event receive routine
3351          * will clear that state and with that indicate completion of the
3352          * WMT command.
3353          */
3354         err = wait_on_bit_timeout(&data->flags, BTUSB_TX_WAIT_VND_EVT,
3355                                   TASK_INTERRUPTIBLE, HCI_INIT_TIMEOUT);
3356         if (err == -EINTR) {
3357                 bt_dev_err(hdev, "Execution of wmt command interrupted");
3358                 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
3359                 goto err_free_wc;
3360         }
3361
3362         if (err) {
3363                 bt_dev_err(hdev, "Execution of wmt command timed out");
3364                 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
3365                 err = -ETIMEDOUT;
3366                 goto err_free_wc;
3367         }
3368
3369         /* Parse and handle the return WMT event */
3370         wmt_evt = (struct btmtk_hci_wmt_evt *)data->evt_skb->data;
3371         if (wmt_evt->whdr.op != hdr->op) {
3372                 bt_dev_err(hdev, "Wrong op received %d expected %d",
3373                            wmt_evt->whdr.op, hdr->op);
3374                 err = -EIO;
3375                 goto err_free_skb;
3376         }
3377
3378         switch (wmt_evt->whdr.op) {
3379         case BTMTK_WMT_SEMAPHORE:
3380                 if (wmt_evt->whdr.flag == 2)
3381                         status = BTMTK_WMT_PATCH_UNDONE;
3382                 else
3383                         status = BTMTK_WMT_PATCH_DONE;
3384                 break;
3385         case BTMTK_WMT_FUNC_CTRL:
3386                 wmt_evt_funcc = (struct btmtk_hci_wmt_evt_funcc *)wmt_evt;
3387                 if (be16_to_cpu(wmt_evt_funcc->status) == 0x404)
3388                         status = BTMTK_WMT_ON_DONE;
3389                 else if (be16_to_cpu(wmt_evt_funcc->status) == 0x420)
3390                         status = BTMTK_WMT_ON_PROGRESS;
3391                 else
3392                         status = BTMTK_WMT_ON_UNDONE;
3393                 break;
3394         case BTMTK_WMT_PATCH_DWNLD:
3395                 if (wmt_evt->whdr.flag == 2)
3396                         status = BTMTK_WMT_PATCH_DONE;
3397                 else if (wmt_evt->whdr.flag == 1)
3398                         status = BTMTK_WMT_PATCH_PROGRESS;
3399                 else
3400                         status = BTMTK_WMT_PATCH_UNDONE;
3401                 break;
3402         }
3403
3404         if (wmt_params->status)
3405                 *wmt_params->status = status;
3406
3407 err_free_skb:
3408         kfree_skb(data->evt_skb);
3409         data->evt_skb = NULL;
3410 err_free_wc:
3411         kfree(wc);
3412         return err;
3413 }
3414
3415 static int btusb_mtk_setup_firmware_79xx(struct hci_dev *hdev, const char *fwname)
3416 {
3417         struct btmtk_hci_wmt_params wmt_params;
3418         struct btmtk_global_desc *globaldesc = NULL;
3419         struct btmtk_section_map *sectionmap;
3420         const struct firmware *fw;
3421         const u8 *fw_ptr;
3422         const u8 *fw_bin_ptr;
3423         int err, dlen, i, status;
3424         u8 flag, first_block, retry;
3425         u32 section_num, dl_size, section_offset;
3426         u8 cmd[64];
3427
3428         err = request_firmware(&fw, fwname, &hdev->dev);
3429         if (err < 0) {
3430                 bt_dev_err(hdev, "Failed to load firmware file (%d)", err);
3431                 return err;
3432         }
3433
3434         fw_ptr = fw->data;
3435         fw_bin_ptr = fw_ptr;
3436         globaldesc = (struct btmtk_global_desc *)(fw_ptr + MTK_FW_ROM_PATCH_HEADER_SIZE);
3437         section_num = le32_to_cpu(globaldesc->section_num);
3438
3439         for (i = 0; i < section_num; i++) {
3440                 first_block = 1;
3441                 fw_ptr = fw_bin_ptr;
3442                 sectionmap = (struct btmtk_section_map *)(fw_ptr + MTK_FW_ROM_PATCH_HEADER_SIZE +
3443                               MTK_FW_ROM_PATCH_GD_SIZE + MTK_FW_ROM_PATCH_SEC_MAP_SIZE * i);
3444
3445                 section_offset = le32_to_cpu(sectionmap->secoffset);
3446                 dl_size = le32_to_cpu(sectionmap->bin_info_spec.dlsize);
3447
3448                 if (dl_size > 0) {
3449                         retry = 20;
3450                         while (retry > 0) {
3451                                 cmd[0] = 0; /* 0 means legacy dl mode. */
3452                                 memcpy(cmd + 1,
3453                                        fw_ptr + MTK_FW_ROM_PATCH_HEADER_SIZE +
3454                                        MTK_FW_ROM_PATCH_GD_SIZE + MTK_FW_ROM_PATCH_SEC_MAP_SIZE * i +
3455                                        MTK_SEC_MAP_COMMON_SIZE,
3456                                        MTK_SEC_MAP_NEED_SEND_SIZE + 1);
3457
3458                                 wmt_params.op = BTMTK_WMT_PATCH_DWNLD;
3459                                 wmt_params.status = &status;
3460                                 wmt_params.flag = 0;
3461                                 wmt_params.dlen = MTK_SEC_MAP_NEED_SEND_SIZE + 1;
3462                                 wmt_params.data = &cmd;
3463
3464                                 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3465                                 if (err < 0) {
3466                                         bt_dev_err(hdev, "Failed to send wmt patch dwnld (%d)",
3467                                                    err);
3468                                         goto err_release_fw;
3469                                 }
3470
3471                                 if (status == BTMTK_WMT_PATCH_UNDONE) {
3472                                         break;
3473                                 } else if (status == BTMTK_WMT_PATCH_PROGRESS) {
3474                                         msleep(100);
3475                                         retry--;
3476                                 } else if (status == BTMTK_WMT_PATCH_DONE) {
3477                                         goto next_section;
3478                                 } else {
3479                                         bt_dev_err(hdev, "Failed wmt patch dwnld status (%d)",
3480                                                    status);
3481                                         goto err_release_fw;
3482                                 }
3483                         }
3484
3485                         fw_ptr += section_offset;
3486                         wmt_params.op = BTMTK_WMT_PATCH_DWNLD;
3487                         wmt_params.status = NULL;
3488
3489                         while (dl_size > 0) {
3490                                 dlen = min_t(int, 250, dl_size);
3491                                 if (first_block == 1) {
3492                                         flag = 1;
3493                                         first_block = 0;
3494                                 } else if (dl_size - dlen <= 0) {
3495                                         flag = 3;
3496                                 } else {
3497                                         flag = 2;
3498                                 }
3499
3500                                 wmt_params.flag = flag;
3501                                 wmt_params.dlen = dlen;
3502                                 wmt_params.data = fw_ptr;
3503
3504                                 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3505                                 if (err < 0) {
3506                                         bt_dev_err(hdev, "Failed to send wmt patch dwnld (%d)",
3507                                                    err);
3508                                         goto err_release_fw;
3509                                 }
3510
3511                                 dl_size -= dlen;
3512                                 fw_ptr += dlen;
3513                         }
3514                 }
3515 next_section:
3516                 continue;
3517         }
3518         /* Wait a few moments for firmware activation done */
3519         usleep_range(100000, 120000);
3520
3521 err_release_fw:
3522         release_firmware(fw);
3523
3524         return err;
3525 }
3526
3527 static int btusb_mtk_setup_firmware(struct hci_dev *hdev, const char *fwname)
3528 {
3529         struct btmtk_hci_wmt_params wmt_params;
3530         const struct firmware *fw;
3531         const u8 *fw_ptr;
3532         size_t fw_size;
3533         int err, dlen;
3534         u8 flag, param;
3535
3536         err = request_firmware(&fw, fwname, &hdev->dev);
3537         if (err < 0) {
3538                 bt_dev_err(hdev, "Failed to load firmware file (%d)", err);
3539                 return err;
3540         }
3541
3542         /* Power on data RAM the firmware relies on. */
3543         param = 1;
3544         wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3545         wmt_params.flag = 3;
3546         wmt_params.dlen = sizeof(param);
3547         wmt_params.data = &param;
3548         wmt_params.status = NULL;
3549
3550         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3551         if (err < 0) {
3552                 bt_dev_err(hdev, "Failed to power on data RAM (%d)", err);
3553                 goto err_release_fw;
3554         }
3555
3556         fw_ptr = fw->data;
3557         fw_size = fw->size;
3558
3559         /* The size of patch header is 30 bytes, should be skip */
3560         if (fw_size < 30) {
3561                 err = -EINVAL;
3562                 goto err_release_fw;
3563         }
3564
3565         fw_size -= 30;
3566         fw_ptr += 30;
3567         flag = 1;
3568
3569         wmt_params.op = BTMTK_WMT_PATCH_DWNLD;
3570         wmt_params.status = NULL;
3571
3572         while (fw_size > 0) {
3573                 dlen = min_t(int, 250, fw_size);
3574
3575                 /* Tell device the position in sequence */
3576                 if (fw_size - dlen <= 0)
3577                         flag = 3;
3578                 else if (fw_size < fw->size - 30)
3579                         flag = 2;
3580
3581                 wmt_params.flag = flag;
3582                 wmt_params.dlen = dlen;
3583                 wmt_params.data = fw_ptr;
3584
3585                 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3586                 if (err < 0) {
3587                         bt_dev_err(hdev, "Failed to send wmt patch dwnld (%d)",
3588                                    err);
3589                         goto err_release_fw;
3590                 }
3591
3592                 fw_size -= dlen;
3593                 fw_ptr += dlen;
3594         }
3595
3596         wmt_params.op = BTMTK_WMT_RST;
3597         wmt_params.flag = 4;
3598         wmt_params.dlen = 0;
3599         wmt_params.data = NULL;
3600         wmt_params.status = NULL;
3601
3602         /* Activate funciton the firmware providing to */
3603         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3604         if (err < 0) {
3605                 bt_dev_err(hdev, "Failed to send wmt rst (%d)", err);
3606                 goto err_release_fw;
3607         }
3608
3609         /* Wait a few moments for firmware activation done */
3610         usleep_range(10000, 12000);
3611
3612 err_release_fw:
3613         release_firmware(fw);
3614
3615         return err;
3616 }
3617
3618 static int btusb_mtk_func_query(struct hci_dev *hdev)
3619 {
3620         struct btmtk_hci_wmt_params wmt_params;
3621         int status, err;
3622         u8 param = 0;
3623
3624         /* Query whether the function is enabled */
3625         wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3626         wmt_params.flag = 4;
3627         wmt_params.dlen = sizeof(param);
3628         wmt_params.data = &param;
3629         wmt_params.status = &status;
3630
3631         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3632         if (err < 0) {
3633                 bt_dev_err(hdev, "Failed to query function status (%d)", err);
3634                 return err;
3635         }
3636
3637         return status;
3638 }
3639
3640 static int btusb_mtk_reg_read(struct btusb_data *data, u32 reg, u32 *val)
3641 {
3642         int pipe, err, size = sizeof(u32);
3643         void *buf;
3644
3645         buf = kzalloc(size, GFP_KERNEL);
3646         if (!buf)
3647                 return -ENOMEM;
3648
3649         pipe = usb_rcvctrlpipe(data->udev, 0);
3650         err = usb_control_msg(data->udev, pipe, 0x63,
3651                               USB_TYPE_VENDOR | USB_DIR_IN,
3652                               reg >> 16, reg & 0xffff,
3653                               buf, size, USB_CTRL_SET_TIMEOUT);
3654         if (err < 0)
3655                 goto err_free_buf;
3656
3657         *val = get_unaligned_le32(buf);
3658
3659 err_free_buf:
3660         kfree(buf);
3661
3662         return err;
3663 }
3664
3665 static int btusb_mtk_id_get(struct btusb_data *data, u32 reg, u32 *id)
3666 {
3667         return btusb_mtk_reg_read(data, reg, id);
3668 }
3669
3670 static int btusb_mtk_setup(struct hci_dev *hdev)
3671 {
3672         struct btusb_data *data = hci_get_drvdata(hdev);
3673         struct btmtk_hci_wmt_params wmt_params;
3674         ktime_t calltime, delta, rettime;
3675         struct btmtk_tci_sleep tci_sleep;
3676         unsigned long long duration;
3677         struct sk_buff *skb;
3678         const char *fwname;
3679         int err, status;
3680         u32 dev_id;
3681         char fw_bin_name[64];
3682         u32 fw_version = 0;
3683         u8 param;
3684
3685         calltime = ktime_get();
3686
3687         err = btusb_mtk_id_get(data, 0x80000008, &dev_id);
3688         if (err < 0) {
3689                 bt_dev_err(hdev, "Failed to get device id (%d)", err);
3690                 return err;
3691         }
3692
3693         if (!dev_id) {
3694                 err = btusb_mtk_id_get(data, 0x70010200, &dev_id);
3695                 if (err < 0) {
3696                         bt_dev_err(hdev, "Failed to get device id (%d)", err);
3697                         return err;
3698                 }
3699                 err = btusb_mtk_id_get(data, 0x80021004, &fw_version);
3700                 if (err < 0) {
3701                         bt_dev_err(hdev, "Failed to get fw version (%d)", err);
3702                         return err;
3703                 }
3704         }
3705
3706         switch (dev_id) {
3707         case 0x7663:
3708                 fwname = FIRMWARE_MT7663;
3709                 break;
3710         case 0x7668:
3711                 fwname = FIRMWARE_MT7668;
3712                 break;
3713         case 0x7961:
3714                 snprintf(fw_bin_name, sizeof(fw_bin_name),
3715                         "mediatek/BT_RAM_CODE_MT%04x_1_%x_hdr.bin",
3716                          dev_id & 0xffff, (fw_version & 0xff) + 1);
3717                 err = btusb_mtk_setup_firmware_79xx(hdev, fw_bin_name);
3718
3719                 /* Enable Bluetooth protocol */
3720                 param = 1;
3721                 wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3722                 wmt_params.flag = 0;
3723                 wmt_params.dlen = sizeof(param);
3724                 wmt_params.data = &param;
3725                 wmt_params.status = NULL;
3726
3727                 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3728                 if (err < 0) {
3729                         bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
3730                         return err;
3731                 }
3732                 goto done;
3733         default:
3734                 bt_dev_err(hdev, "Unsupported hardware variant (%08x)",
3735                            dev_id);
3736                 return -ENODEV;
3737         }
3738
3739         /* Query whether the firmware is already download */
3740         wmt_params.op = BTMTK_WMT_SEMAPHORE;
3741         wmt_params.flag = 1;
3742         wmt_params.dlen = 0;
3743         wmt_params.data = NULL;
3744         wmt_params.status = &status;
3745
3746         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3747         if (err < 0) {
3748                 bt_dev_err(hdev, "Failed to query firmware status (%d)", err);
3749                 return err;
3750         }
3751
3752         if (status == BTMTK_WMT_PATCH_DONE) {
3753                 bt_dev_info(hdev, "firmware already downloaded");
3754                 goto ignore_setup_fw;
3755         }
3756
3757         /* Setup a firmware which the device definitely requires */
3758         err = btusb_mtk_setup_firmware(hdev, fwname);
3759         if (err < 0)
3760                 return err;
3761
3762 ignore_setup_fw:
3763         err = readx_poll_timeout(btusb_mtk_func_query, hdev, status,
3764                                  status < 0 || status != BTMTK_WMT_ON_PROGRESS,
3765                                  2000, 5000000);
3766         /* -ETIMEDOUT happens */
3767         if (err < 0)
3768                 return err;
3769
3770         /* The other errors happen in btusb_mtk_func_query */
3771         if (status < 0)
3772                 return status;
3773
3774         if (status == BTMTK_WMT_ON_DONE) {
3775                 bt_dev_info(hdev, "function already on");
3776                 goto ignore_func_on;
3777         }
3778
3779         /* Enable Bluetooth protocol */
3780         param = 1;
3781         wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3782         wmt_params.flag = 0;
3783         wmt_params.dlen = sizeof(param);
3784         wmt_params.data = &param;
3785         wmt_params.status = NULL;
3786
3787         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3788         if (err < 0) {
3789                 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
3790                 return err;
3791         }
3792
3793 ignore_func_on:
3794         /* Apply the low power environment setup */
3795         tci_sleep.mode = 0x5;
3796         tci_sleep.duration = cpu_to_le16(0x640);
3797         tci_sleep.host_duration = cpu_to_le16(0x640);
3798         tci_sleep.host_wakeup_pin = 0;
3799         tci_sleep.time_compensation = 0;
3800
3801         skb = __hci_cmd_sync(hdev, 0xfc7a, sizeof(tci_sleep), &tci_sleep,
3802                              HCI_INIT_TIMEOUT);
3803         if (IS_ERR(skb)) {
3804                 err = PTR_ERR(skb);
3805                 bt_dev_err(hdev, "Failed to apply low power setting (%d)", err);
3806                 return err;
3807         }
3808         kfree_skb(skb);
3809
3810 done:
3811         rettime = ktime_get();
3812         delta = ktime_sub(rettime, calltime);
3813         duration = (unsigned long long)ktime_to_ns(delta) >> 10;
3814
3815         bt_dev_info(hdev, "Device setup in %llu usecs", duration);
3816
3817         return 0;
3818 }
3819
3820 static int btusb_mtk_shutdown(struct hci_dev *hdev)
3821 {
3822         struct btmtk_hci_wmt_params wmt_params;
3823         u8 param = 0;
3824         int err;
3825
3826         /* Disable the device */
3827         wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3828         wmt_params.flag = 0;
3829         wmt_params.dlen = sizeof(param);
3830         wmt_params.data = &param;
3831         wmt_params.status = NULL;
3832
3833         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3834         if (err < 0) {
3835                 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
3836                 return err;
3837         }
3838
3839         return 0;
3840 }
3841
3842 MODULE_FIRMWARE(FIRMWARE_MT7663);
3843 MODULE_FIRMWARE(FIRMWARE_MT7668);
3844
3845 #ifdef CONFIG_PM
3846 /* Configure an out-of-band gpio as wake-up pin, if specified in device tree */
3847 static int marvell_config_oob_wake(struct hci_dev *hdev)
3848 {
3849         struct sk_buff *skb;
3850         struct btusb_data *data = hci_get_drvdata(hdev);
3851         struct device *dev = &data->udev->dev;
3852         u16 pin, gap, opcode;
3853         int ret;
3854         u8 cmd[5];
3855
3856         /* Move on if no wakeup pin specified */
3857         if (of_property_read_u16(dev->of_node, "marvell,wakeup-pin", &pin) ||
3858             of_property_read_u16(dev->of_node, "marvell,wakeup-gap-ms", &gap))
3859                 return 0;
3860
3861         /* Vendor specific command to configure a GPIO as wake-up pin */
3862         opcode = hci_opcode_pack(0x3F, 0x59);
3863         cmd[0] = opcode & 0xFF;
3864         cmd[1] = opcode >> 8;
3865         cmd[2] = 2; /* length of parameters that follow */
3866         cmd[3] = pin;
3867         cmd[4] = gap; /* time in ms, for which wakeup pin should be asserted */
3868
3869         skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
3870         if (!skb) {
3871                 bt_dev_err(hdev, "%s: No memory", __func__);
3872                 return -ENOMEM;
3873         }
3874
3875         skb_put_data(skb, cmd, sizeof(cmd));
3876         hci_skb_pkt_type(skb) = HCI_COMMAND_PKT;
3877
3878         ret = btusb_send_frame(hdev, skb);
3879         if (ret) {
3880                 bt_dev_err(hdev, "%s: configuration failed", __func__);
3881                 kfree_skb(skb);
3882                 return ret;
3883         }
3884
3885         return 0;
3886 }
3887 #endif
3888
3889 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
3890                                     const bdaddr_t *bdaddr)
3891 {
3892         struct sk_buff *skb;
3893         u8 buf[8];
3894         long ret;
3895
3896         buf[0] = 0xfe;
3897         buf[1] = sizeof(bdaddr_t);
3898         memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
3899
3900         skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
3901         if (IS_ERR(skb)) {
3902                 ret = PTR_ERR(skb);
3903                 bt_dev_err(hdev, "changing Marvell device address failed (%ld)",
3904                            ret);
3905                 return ret;
3906         }
3907         kfree_skb(skb);
3908
3909         return 0;
3910 }
3911
3912 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
3913                                     const bdaddr_t *bdaddr)
3914 {
3915         struct sk_buff *skb;
3916         u8 buf[10];
3917         long ret;
3918
3919         buf[0] = 0x01;
3920         buf[1] = 0x01;
3921         buf[2] = 0x00;
3922         buf[3] = sizeof(bdaddr_t);
3923         memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
3924
3925         skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
3926         if (IS_ERR(skb)) {
3927                 ret = PTR_ERR(skb);
3928                 bt_dev_err(hdev, "Change address command failed (%ld)", ret);
3929                 return ret;
3930         }
3931         kfree_skb(skb);
3932
3933         return 0;
3934 }
3935
3936 static int btusb_set_bdaddr_wcn6855(struct hci_dev *hdev,
3937                                 const bdaddr_t *bdaddr)
3938 {
3939         struct sk_buff *skb;
3940         u8 buf[6];
3941         long ret;
3942
3943         memcpy(buf, bdaddr, sizeof(bdaddr_t));
3944
3945         skb = __hci_cmd_sync_ev(hdev, 0xfc14, sizeof(buf), buf,
3946                                 HCI_EV_CMD_COMPLETE, HCI_INIT_TIMEOUT);
3947         if (IS_ERR(skb)) {
3948                 ret = PTR_ERR(skb);
3949                 bt_dev_err(hdev, "Change address command failed (%ld)", ret);
3950                 return ret;
3951         }
3952         kfree_skb(skb);
3953
3954         return 0;
3955 }
3956
3957 #define QCA_DFU_PACKET_LEN      4096
3958
3959 #define QCA_GET_TARGET_VERSION  0x09
3960 #define QCA_CHECK_STATUS        0x05
3961 #define QCA_DFU_DOWNLOAD        0x01
3962
3963 #define QCA_SYSCFG_UPDATED      0x40
3964 #define QCA_PATCH_UPDATED       0x80
3965 #define QCA_DFU_TIMEOUT         3000
3966 #define QCA_FLAG_MULTI_NVM      0x80
3967
3968 struct qca_version {
3969         __le32  rom_version;
3970         __le32  patch_version;
3971         __le32  ram_version;
3972         __le16  board_id;
3973         __le16  flag;
3974         __u8    reserved[4];
3975 } __packed;
3976
3977 struct qca_rampatch_version {
3978         __le16  rom_version_high;
3979         __le16  rom_version_low;
3980         __le16  patch_version;
3981 } __packed;
3982
3983 struct qca_device_info {
3984         u32     rom_version;
3985         u8      rampatch_hdr;   /* length of header in rampatch */
3986         u8      nvm_hdr;        /* length of header in NVM */
3987         u8      ver_offset;     /* offset of version structure in rampatch */
3988 };
3989
3990 static const struct qca_device_info qca_devices_table[] = {
3991         { 0x00000100, 20, 4,  8 }, /* Rome 1.0 */
3992         { 0x00000101, 20, 4,  8 }, /* Rome 1.1 */
3993         { 0x00000200, 28, 4, 16 }, /* Rome 2.0 */
3994         { 0x00000201, 28, 4, 16 }, /* Rome 2.1 */
3995         { 0x00000300, 28, 4, 16 }, /* Rome 3.0 */
3996         { 0x00000302, 28, 4, 16 }, /* Rome 3.2 */
3997         { 0x00130100, 40, 4, 16 }, /* WCN6855 1.0 */
3998         { 0x00130200, 40, 4, 16 }, /* WCN6855 2.0 */
3999 };
4000
4001 static int btusb_qca_send_vendor_req(struct usb_device *udev, u8 request,
4002                                      void *data, u16 size)
4003 {
4004         int pipe, err;
4005         u8 *buf;
4006
4007         buf = kmalloc(size, GFP_KERNEL);
4008         if (!buf)
4009                 return -ENOMEM;
4010
4011         /* Found some of USB hosts have IOT issues with ours so that we should
4012          * not wait until HCI layer is ready.
4013          */
4014         pipe = usb_rcvctrlpipe(udev, 0);
4015         err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
4016                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
4017         if (err < 0) {
4018                 dev_err(&udev->dev, "Failed to access otp area (%d)", err);
4019                 goto done;
4020         }
4021
4022         memcpy(data, buf, size);
4023
4024 done:
4025         kfree(buf);
4026
4027         return err;
4028 }
4029
4030 static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
4031                                        const struct firmware *firmware,
4032                                        size_t hdr_size)
4033 {
4034         struct btusb_data *btdata = hci_get_drvdata(hdev);
4035         struct usb_device *udev = btdata->udev;
4036         size_t count, size, sent = 0;
4037         int pipe, len, err;
4038         u8 *buf;
4039
4040         buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
4041         if (!buf)
4042                 return -ENOMEM;
4043
4044         count = firmware->size;
4045
4046         size = min_t(size_t, count, hdr_size);
4047         memcpy(buf, firmware->data, size);
4048
4049         /* USB patches should go down to controller through USB path
4050          * because binary format fits to go down through USB channel.
4051          * USB control path is for patching headers and USB bulk is for
4052          * patch body.
4053          */
4054         pipe = usb_sndctrlpipe(udev, 0);
4055         err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
4056                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
4057         if (err < 0) {
4058                 bt_dev_err(hdev, "Failed to send headers (%d)", err);
4059                 goto done;
4060         }
4061
4062         sent += size;
4063         count -= size;
4064
4065         while (count) {
4066                 size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
4067
4068                 memcpy(buf, firmware->data + sent, size);
4069
4070                 pipe = usb_sndbulkpipe(udev, 0x02);
4071                 err = usb_bulk_msg(udev, pipe, buf, size, &len,
4072                                    QCA_DFU_TIMEOUT);
4073                 if (err < 0) {
4074                         bt_dev_err(hdev, "Failed to send body at %zd of %zd (%d)",
4075                                    sent, firmware->size, err);
4076                         break;
4077                 }
4078
4079                 if (size != len) {
4080                         bt_dev_err(hdev, "Failed to get bulk buffer");
4081                         err = -EILSEQ;
4082                         break;
4083                 }
4084
4085                 sent  += size;
4086                 count -= size;
4087         }
4088
4089 done:
4090         kfree(buf);
4091         return err;
4092 }
4093
4094 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
4095                                          struct qca_version *ver,
4096                                          const struct qca_device_info *info)
4097 {
4098         struct qca_rampatch_version *rver;
4099         const struct firmware *fw;
4100         u32 ver_rom, ver_patch, rver_rom;
4101         u16 rver_rom_low, rver_rom_high, rver_patch;
4102         char fwname[64];
4103         int err;
4104
4105         ver_rom = le32_to_cpu(ver->rom_version);
4106         ver_patch = le32_to_cpu(ver->patch_version);
4107
4108         snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom);
4109
4110         err = request_firmware(&fw, fwname, &hdev->dev);
4111         if (err) {
4112                 bt_dev_err(hdev, "failed to request rampatch file: %s (%d)",
4113                            fwname, err);
4114                 return err;
4115         }
4116
4117         bt_dev_info(hdev, "using rampatch file: %s", fwname);
4118
4119         rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
4120         rver_rom_low = le16_to_cpu(rver->rom_version_low);
4121         rver_patch = le16_to_cpu(rver->patch_version);
4122
4123         if (ver_rom & ~0xffffU) {
4124                 rver_rom_high = le16_to_cpu(rver->rom_version_high);
4125                 rver_rom = le32_to_cpu(rver_rom_high << 16 | rver_rom_low);
4126         } else {
4127                 rver_rom = rver_rom_low;
4128         }
4129
4130         bt_dev_info(hdev, "QCA: patch rome 0x%x build 0x%x, "
4131                     "firmware rome 0x%x build 0x%x",
4132                     rver_rom, rver_patch, ver_rom, ver_patch);
4133
4134         if (rver_rom != ver_rom || rver_patch <= ver_patch) {
4135                 bt_dev_err(hdev, "rampatch file version did not match with firmware");
4136                 err = -EINVAL;
4137                 goto done;
4138         }
4139
4140         err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
4141
4142 done:
4143         release_firmware(fw);
4144
4145         return err;
4146 }
4147
4148 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
4149                                     struct qca_version *ver,
4150                                     const struct qca_device_info *info)
4151 {
4152         const struct firmware *fw;
4153         char fwname[64];
4154         int err;
4155
4156         if (((ver->flag >> 8) & 0xff) == QCA_FLAG_MULTI_NVM) {
4157                 snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x_%04x.bin",
4158                          le32_to_cpu(ver->rom_version),
4159                          le16_to_cpu(ver->board_id));
4160         } else {
4161                 snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x.bin",
4162                          le32_to_cpu(ver->rom_version));
4163         }
4164
4165         err = request_firmware(&fw, fwname, &hdev->dev);
4166         if (err) {
4167                 bt_dev_err(hdev, "failed to request NVM file: %s (%d)",
4168                            fwname, err);
4169                 return err;
4170         }
4171
4172         bt_dev_info(hdev, "using NVM file: %s", fwname);
4173
4174         err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
4175
4176         release_firmware(fw);
4177
4178         return err;
4179 }
4180
4181 /* identify the ROM version and check whether patches are needed */
4182 static bool btusb_qca_need_patch(struct usb_device *udev)
4183 {
4184         struct qca_version ver;
4185
4186         if (btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
4187                                       sizeof(ver)) < 0)
4188                 return false;
4189         /* only low ROM versions need patches */
4190         return !(le32_to_cpu(ver.rom_version) & ~0xffffU);
4191 }
4192
4193 static int btusb_setup_qca(struct hci_dev *hdev)
4194 {
4195         struct btusb_data *btdata = hci_get_drvdata(hdev);
4196         struct usb_device *udev = btdata->udev;
4197         const struct qca_device_info *info = NULL;
4198         struct qca_version ver;
4199         u32 ver_rom;
4200         u8 status;
4201         int i, err;
4202
4203         err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
4204                                         sizeof(ver));
4205         if (err < 0)
4206                 return err;
4207
4208         ver_rom = le32_to_cpu(ver.rom_version);
4209
4210         for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
4211                 if (ver_rom == qca_devices_table[i].rom_version)
4212                         info = &qca_devices_table[i];
4213         }
4214         if (!info) {
4215                 /* If the rom_version is not matched in the qca_devices_table
4216                  * and the high ROM version is not zero, we assume this chip no
4217                  * need to load the rampatch and nvm.
4218                  */
4219                 if (ver_rom & ~0xffffU)
4220                         return 0;
4221
4222                 bt_dev_err(hdev, "don't support firmware rome 0x%x", ver_rom);
4223                 return -ENODEV;
4224         }
4225
4226         err = btusb_qca_send_vendor_req(udev, QCA_CHECK_STATUS, &status,
4227                                         sizeof(status));
4228         if (err < 0)
4229                 return err;
4230
4231         if (!(status & QCA_PATCH_UPDATED)) {
4232                 err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
4233                 if (err < 0)
4234                         return err;
4235         }
4236
4237         err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
4238                                         sizeof(ver));
4239         if (err < 0)
4240                 return err;
4241
4242         if (!(status & QCA_SYSCFG_UPDATED)) {
4243                 err = btusb_setup_qca_load_nvm(hdev, &ver, info);
4244                 if (err < 0)
4245                         return err;
4246         }
4247
4248         return 0;
4249 }
4250
4251 static inline int __set_diag_interface(struct hci_dev *hdev)
4252 {
4253         struct btusb_data *data = hci_get_drvdata(hdev);
4254         struct usb_interface *intf = data->diag;
4255         int i;
4256
4257         if (!data->diag)
4258                 return -ENODEV;
4259
4260         data->diag_tx_ep = NULL;
4261         data->diag_rx_ep = NULL;
4262
4263         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
4264                 struct usb_endpoint_descriptor *ep_desc;
4265
4266                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
4267
4268                 if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
4269                         data->diag_tx_ep = ep_desc;
4270                         continue;
4271                 }
4272
4273                 if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
4274                         data->diag_rx_ep = ep_desc;
4275                         continue;
4276                 }
4277         }
4278
4279         if (!data->diag_tx_ep || !data->diag_rx_ep) {
4280                 bt_dev_err(hdev, "invalid diagnostic descriptors");
4281                 return -ENODEV;
4282         }
4283
4284         return 0;
4285 }
4286
4287 static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable)
4288 {
4289         struct btusb_data *data = hci_get_drvdata(hdev);
4290         struct sk_buff *skb;
4291         struct urb *urb;
4292         unsigned int pipe;
4293
4294         if (!data->diag_tx_ep)
4295                 return ERR_PTR(-ENODEV);
4296
4297         urb = usb_alloc_urb(0, GFP_KERNEL);
4298         if (!urb)
4299                 return ERR_PTR(-ENOMEM);
4300
4301         skb = bt_skb_alloc(2, GFP_KERNEL);
4302         if (!skb) {
4303                 usb_free_urb(urb);
4304                 return ERR_PTR(-ENOMEM);
4305         }
4306
4307         skb_put_u8(skb, 0xf0);
4308         skb_put_u8(skb, enable);
4309
4310         pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress);
4311
4312         usb_fill_bulk_urb(urb, data->udev, pipe,
4313                           skb->data, skb->len, btusb_tx_complete, skb);
4314
4315         skb->dev = (void *)hdev;
4316
4317         return urb;
4318 }
4319
4320 static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable)
4321 {
4322         struct btusb_data *data = hci_get_drvdata(hdev);
4323         struct urb *urb;
4324
4325         if (!data->diag)
4326                 return -ENODEV;
4327
4328         if (!test_bit(HCI_RUNNING, &hdev->flags))
4329                 return -ENETDOWN;
4330
4331         urb = alloc_diag_urb(hdev, enable);
4332         if (IS_ERR(urb))
4333                 return PTR_ERR(urb);
4334
4335         return submit_or_queue_tx_urb(hdev, urb);
4336 }
4337
4338 #ifdef CONFIG_PM
4339 static irqreturn_t btusb_oob_wake_handler(int irq, void *priv)
4340 {
4341         struct btusb_data *data = priv;
4342
4343         pm_wakeup_event(&data->udev->dev, 0);
4344         pm_system_wakeup();
4345
4346         /* Disable only if not already disabled (keep it balanced) */
4347         if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
4348                 disable_irq_nosync(irq);
4349                 disable_irq_wake(irq);
4350         }
4351         return IRQ_HANDLED;
4352 }
4353
4354 static const struct of_device_id btusb_match_table[] = {
4355         { .compatible = "usb1286,204e" },
4356         { .compatible = "usbcf3,e300" }, /* QCA6174A */
4357         { .compatible = "usb4ca,301a" }, /* QCA6174A (Lite-On) */
4358         { }
4359 };
4360 MODULE_DEVICE_TABLE(of, btusb_match_table);
4361
4362 /* Use an oob wakeup pin? */
4363 static int btusb_config_oob_wake(struct hci_dev *hdev)
4364 {
4365         struct btusb_data *data = hci_get_drvdata(hdev);
4366         struct device *dev = &data->udev->dev;
4367         int irq, ret;
4368
4369         clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
4370
4371         if (!of_match_device(btusb_match_table, dev))
4372                 return 0;
4373
4374         /* Move on if no IRQ specified */
4375         irq = of_irq_get_byname(dev->of_node, "wakeup");
4376         if (irq <= 0) {
4377                 bt_dev_dbg(hdev, "%s: no OOB Wakeup IRQ in DT", __func__);
4378                 return 0;
4379         }
4380
4381         irq_set_status_flags(irq, IRQ_NOAUTOEN);
4382         ret = devm_request_irq(&hdev->dev, irq, btusb_oob_wake_handler,
4383                                0, "OOB Wake-on-BT", data);
4384         if (ret) {
4385                 bt_dev_err(hdev, "%s: IRQ request failed", __func__);
4386                 return ret;
4387         }
4388
4389         ret = device_init_wakeup(dev, true);
4390         if (ret) {
4391                 bt_dev_err(hdev, "%s: failed to init_wakeup", __func__);
4392                 return ret;
4393         }
4394
4395         data->oob_wake_irq = irq;
4396         bt_dev_info(hdev, "OOB Wake-on-BT configured at IRQ %u", irq);
4397         return 0;
4398 }
4399 #endif
4400
4401 static void btusb_check_needs_reset_resume(struct usb_interface *intf)
4402 {
4403         if (dmi_check_system(btusb_needs_reset_resume_table))
4404                 interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME;
4405 }
4406
4407 static bool btusb_prevent_wake(struct hci_dev *hdev)
4408 {
4409         struct btusb_data *data = hci_get_drvdata(hdev);
4410
4411         if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags))
4412                 return true;
4413
4414         return !device_may_wakeup(&data->udev->dev);
4415 }
4416
4417 static int btusb_shutdown_qca(struct hci_dev *hdev)
4418 {
4419         struct sk_buff *skb;
4420
4421         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
4422         if (IS_ERR(skb)) {
4423                 bt_dev_err(hdev, "HCI reset during shutdown failed");
4424                 return PTR_ERR(skb);
4425         }
4426         kfree_skb(skb);
4427
4428         return 0;
4429 }
4430
4431 static int btusb_probe(struct usb_interface *intf,
4432                        const struct usb_device_id *id)
4433 {
4434         struct usb_endpoint_descriptor *ep_desc;
4435         struct gpio_desc *reset_gpio;
4436         struct btusb_data *data;
4437         struct hci_dev *hdev;
4438         unsigned ifnum_base;
4439         int i, err;
4440
4441         BT_DBG("intf %p id %p", intf, id);
4442
4443         /* interface numbers are hardcoded in the spec */
4444         if (intf->cur_altsetting->desc.bInterfaceNumber != 0) {
4445                 if (!(id->driver_info & BTUSB_IFNUM_2))
4446                         return -ENODEV;
4447                 if (intf->cur_altsetting->desc.bInterfaceNumber != 2)
4448                         return -ENODEV;
4449         }
4450
4451         ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber;
4452
4453         if (!id->driver_info) {
4454                 const struct usb_device_id *match;
4455
4456                 match = usb_match_id(intf, blacklist_table);
4457                 if (match)
4458                         id = match;
4459         }
4460
4461         if (id->driver_info == BTUSB_IGNORE)
4462                 return -ENODEV;
4463
4464         if (id->driver_info & BTUSB_ATH3012) {
4465                 struct usb_device *udev = interface_to_usbdev(intf);
4466
4467                 /* Old firmware would otherwise let ath3k driver load
4468                  * patch and sysconfig files
4469                  */
4470                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001 &&
4471                     !btusb_qca_need_patch(udev))
4472                         return -ENODEV;
4473         }
4474
4475         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
4476         if (!data)
4477                 return -ENOMEM;
4478
4479         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
4480                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
4481
4482                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
4483                         data->intr_ep = ep_desc;
4484                         continue;
4485                 }
4486
4487                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
4488                         data->bulk_tx_ep = ep_desc;
4489                         continue;
4490                 }
4491
4492                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
4493                         data->bulk_rx_ep = ep_desc;
4494                         continue;
4495                 }
4496         }
4497
4498         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
4499                 return -ENODEV;
4500
4501         if (id->driver_info & BTUSB_AMP) {
4502                 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
4503                 data->cmdreq = 0x2b;
4504         } else {
4505                 data->cmdreq_type = USB_TYPE_CLASS;
4506                 data->cmdreq = 0x00;
4507         }
4508
4509         data->udev = interface_to_usbdev(intf);
4510         data->intf = intf;
4511
4512         INIT_WORK(&data->work, btusb_work);
4513         INIT_WORK(&data->waker, btusb_waker);
4514         init_usb_anchor(&data->deferred);
4515         init_usb_anchor(&data->tx_anchor);
4516         spin_lock_init(&data->txlock);
4517
4518         init_usb_anchor(&data->intr_anchor);
4519         init_usb_anchor(&data->bulk_anchor);
4520         init_usb_anchor(&data->isoc_anchor);
4521         init_usb_anchor(&data->diag_anchor);
4522         init_usb_anchor(&data->ctrl_anchor);
4523         spin_lock_init(&data->rxlock);
4524
4525         if (id->driver_info & BTUSB_INTEL_NEW) {
4526                 data->recv_event = btusb_recv_event_intel;
4527                 data->recv_bulk = btusb_recv_bulk_intel;
4528                 set_bit(BTUSB_BOOTLOADER, &data->flags);
4529         } else {
4530                 data->recv_event = hci_recv_frame;
4531                 data->recv_bulk = btusb_recv_bulk;
4532         }
4533
4534         hdev = hci_alloc_dev();
4535         if (!hdev)
4536                 return -ENOMEM;
4537
4538         hdev->bus = HCI_USB;
4539         hci_set_drvdata(hdev, data);
4540
4541         if (id->driver_info & BTUSB_AMP)
4542                 hdev->dev_type = HCI_AMP;
4543         else
4544                 hdev->dev_type = HCI_PRIMARY;
4545
4546         data->hdev = hdev;
4547
4548         SET_HCIDEV_DEV(hdev, &intf->dev);
4549
4550         reset_gpio = gpiod_get_optional(&data->udev->dev, "reset",
4551                                         GPIOD_OUT_LOW);
4552         if (IS_ERR(reset_gpio)) {
4553                 err = PTR_ERR(reset_gpio);
4554                 goto out_free_dev;
4555         } else if (reset_gpio) {
4556                 data->reset_gpio = reset_gpio;
4557         }
4558
4559         hdev->open   = btusb_open;
4560         hdev->close  = btusb_close;
4561         hdev->flush  = btusb_flush;
4562         hdev->send   = btusb_send_frame;
4563         hdev->notify = btusb_notify;
4564         hdev->prevent_wake = btusb_prevent_wake;
4565
4566 #ifdef CONFIG_PM
4567         err = btusb_config_oob_wake(hdev);
4568         if (err)
4569                 goto out_free_dev;
4570
4571         /* Marvell devices may need a specific chip configuration */
4572         if (id->driver_info & BTUSB_MARVELL && data->oob_wake_irq) {
4573                 err = marvell_config_oob_wake(hdev);
4574                 if (err)
4575                         goto out_free_dev;
4576         }
4577 #endif
4578         if (id->driver_info & BTUSB_CW6622)
4579                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
4580
4581         if (id->driver_info & BTUSB_BCM2045)
4582                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
4583
4584         if (id->driver_info & BTUSB_BCM92035)
4585                 hdev->setup = btusb_setup_bcm92035;
4586
4587         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) &&
4588             (id->driver_info & BTUSB_BCM_PATCHRAM)) {
4589                 hdev->manufacturer = 15;
4590                 hdev->setup = btbcm_setup_patchram;
4591                 hdev->set_diag = btusb_bcm_set_diag;
4592                 hdev->set_bdaddr = btbcm_set_bdaddr;
4593
4594                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
4595                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
4596         }
4597
4598         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) &&
4599             (id->driver_info & BTUSB_BCM_APPLE)) {
4600                 hdev->manufacturer = 15;
4601                 hdev->setup = btbcm_setup_apple;
4602                 hdev->set_diag = btusb_bcm_set_diag;
4603
4604                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
4605                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
4606         }
4607
4608         if (id->driver_info & BTUSB_INTEL) {
4609                 hdev->manufacturer = 2;
4610                 hdev->setup = btusb_setup_intel;
4611                 hdev->shutdown = btusb_shutdown_intel;
4612                 hdev->set_diag = btintel_set_diag_mfg;
4613                 hdev->set_bdaddr = btintel_set_bdaddr;
4614                 hdev->cmd_timeout = btusb_intel_cmd_timeout;
4615                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
4616                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4617                 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
4618         }
4619
4620         if (id->driver_info & BTUSB_INTEL_NEW) {
4621                 hdev->manufacturer = 2;
4622                 hdev->send = btusb_send_frame_intel;
4623                 hdev->setup = btusb_setup_intel_new;
4624                 hdev->shutdown = btusb_shutdown_intel_new;
4625                 hdev->hw_error = btintel_hw_error;
4626                 hdev->set_diag = btintel_set_diag;
4627                 hdev->set_bdaddr = btintel_set_bdaddr;
4628                 hdev->cmd_timeout = btusb_intel_cmd_timeout;
4629                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
4630                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4631                 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
4632         }
4633
4634         if (id->driver_info & BTUSB_INTEL_NEWGEN) {
4635                 hdev->manufacturer = 2;
4636                 hdev->send = btusb_send_frame_intel;
4637                 hdev->setup = btusb_setup_intel_newgen;
4638                 hdev->shutdown = btusb_shutdown_intel_new;
4639                 hdev->hw_error = btintel_hw_error;
4640                 hdev->set_diag = btintel_set_diag;
4641                 hdev->set_bdaddr = btintel_set_bdaddr;
4642                 hdev->cmd_timeout = btusb_intel_cmd_timeout;
4643                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
4644                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4645                 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
4646
4647                 data->recv_event = btusb_recv_event_intel;
4648                 data->recv_bulk = btusb_recv_bulk_intel;
4649                 set_bit(BTUSB_BOOTLOADER, &data->flags);
4650         }
4651
4652         if (id->driver_info & BTUSB_MARVELL)
4653                 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
4654
4655         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_MTK) &&
4656             (id->driver_info & BTUSB_MEDIATEK)) {
4657                 hdev->setup = btusb_mtk_setup;
4658                 hdev->shutdown = btusb_mtk_shutdown;
4659                 hdev->manufacturer = 70;
4660                 set_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks);
4661         }
4662
4663         if (id->driver_info & BTUSB_SWAVE) {
4664                 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
4665                 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
4666         }
4667
4668         if (id->driver_info & BTUSB_INTEL_BOOT) {
4669                 hdev->manufacturer = 2;
4670                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
4671         }
4672
4673         if (id->driver_info & BTUSB_ATH3012) {
4674                 data->setup_on_usb = btusb_setup_qca;
4675                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
4676                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4677                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
4678         }
4679
4680         if (id->driver_info & BTUSB_QCA_ROME) {
4681                 data->setup_on_usb = btusb_setup_qca;
4682                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
4683                 hdev->cmd_timeout = btusb_qca_cmd_timeout;
4684                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4685                 btusb_check_needs_reset_resume(intf);
4686         }
4687
4688         if (id->driver_info & BTUSB_QCA_WCN6855) {
4689                 data->setup_on_usb = btusb_setup_qca;
4690                 hdev->shutdown = btusb_shutdown_qca;
4691                 hdev->set_bdaddr = btusb_set_bdaddr_wcn6855;
4692                 hdev->cmd_timeout = btusb_qca_cmd_timeout;
4693                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4694         }
4695
4696         if (id->driver_info & BTUSB_AMP) {
4697                 /* AMP controllers do not support SCO packets */
4698                 data->isoc = NULL;
4699         } else {
4700                 /* Interface orders are hardcoded in the specification */
4701                 data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1);
4702                 data->isoc_ifnum = ifnum_base + 1;
4703         }
4704
4705         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_RTL) &&
4706             (id->driver_info & BTUSB_REALTEK)) {
4707                 hdev->setup = btrtl_setup_realtek;
4708                 hdev->shutdown = btrtl_shutdown_realtek;
4709                 hdev->cmd_timeout = btusb_rtl_cmd_timeout;
4710
4711                 /* Realtek devices lose their updated firmware over global
4712                  * suspend that means host doesn't send SET_FEATURE
4713                  * (DEVICE_REMOTE_WAKEUP)
4714                  */
4715                 set_bit(BTUSB_WAKEUP_DISABLE, &data->flags);
4716         }
4717
4718         if (!reset)
4719                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
4720
4721         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
4722                 if (!disable_scofix)
4723                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
4724         }
4725
4726         if (id->driver_info & BTUSB_BROKEN_ISOC)
4727                 data->isoc = NULL;
4728
4729         if (id->driver_info & BTUSB_WIDEBAND_SPEECH)
4730                 set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED, &hdev->quirks);
4731
4732         if (id->driver_info & BTUSB_VALID_LE_STATES)
4733                 set_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks);
4734
4735         if (id->driver_info & BTUSB_DIGIANSWER) {
4736                 data->cmdreq_type = USB_TYPE_VENDOR;
4737                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
4738         }
4739
4740         if (id->driver_info & BTUSB_CSR) {
4741                 struct usb_device *udev = data->udev;
4742                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
4743
4744                 /* Old firmware would otherwise execute USB reset */
4745                 if (bcdDevice < 0x117)
4746                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
4747
4748                 /* This must be set first in case we disable it for fakes */
4749                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4750
4751                 /* Fake CSR devices with broken commands */
4752                 if (le16_to_cpu(udev->descriptor.idVendor)  == 0x0a12 &&
4753                     le16_to_cpu(udev->descriptor.idProduct) == 0x0001)
4754                         hdev->setup = btusb_setup_csr;
4755         }
4756
4757         if (id->driver_info & BTUSB_SNIFFER) {
4758                 struct usb_device *udev = data->udev;
4759
4760                 /* New sniffer firmware has crippled HCI interface */
4761                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
4762                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
4763         }
4764
4765         if (id->driver_info & BTUSB_INTEL_BOOT) {
4766                 /* A bug in the bootloader causes that interrupt interface is
4767                  * only enabled after receiving SetInterface(0, AltSetting=0).
4768                  */
4769                 err = usb_set_interface(data->udev, 0, 0);
4770                 if (err < 0) {
4771                         BT_ERR("failed to set interface 0, alt 0 %d", err);
4772                         goto out_free_dev;
4773                 }
4774         }
4775
4776         if (data->isoc) {
4777                 err = usb_driver_claim_interface(&btusb_driver,
4778                                                  data->isoc, data);
4779                 if (err < 0)
4780                         goto out_free_dev;
4781         }
4782
4783         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) && data->diag) {
4784                 if (!usb_driver_claim_interface(&btusb_driver,
4785                                                 data->diag, data))
4786                         __set_diag_interface(hdev);
4787                 else
4788                         data->diag = NULL;
4789         }
4790
4791         if (enable_autosuspend)
4792                 usb_enable_autosuspend(data->udev);
4793
4794         err = hci_register_dev(hdev);
4795         if (err < 0)
4796                 goto out_free_dev;
4797
4798         usb_set_intfdata(intf, data);
4799
4800         return 0;
4801
4802 out_free_dev:
4803         if (data->reset_gpio)
4804                 gpiod_put(data->reset_gpio);
4805         hci_free_dev(hdev);
4806         return err;
4807 }
4808
4809 static void btusb_disconnect(struct usb_interface *intf)
4810 {
4811         struct btusb_data *data = usb_get_intfdata(intf);
4812         struct hci_dev *hdev;
4813
4814         BT_DBG("intf %p", intf);
4815
4816         if (!data)
4817                 return;
4818
4819         hdev = data->hdev;
4820         usb_set_intfdata(data->intf, NULL);
4821
4822         if (data->isoc)
4823                 usb_set_intfdata(data->isoc, NULL);
4824
4825         if (data->diag)
4826                 usb_set_intfdata(data->diag, NULL);
4827
4828         hci_unregister_dev(hdev);
4829
4830         if (intf == data->intf) {
4831                 if (data->isoc)
4832                         usb_driver_release_interface(&btusb_driver, data->isoc);
4833                 if (data->diag)
4834                         usb_driver_release_interface(&btusb_driver, data->diag);
4835         } else if (intf == data->isoc) {
4836                 if (data->diag)
4837                         usb_driver_release_interface(&btusb_driver, data->diag);
4838                 usb_driver_release_interface(&btusb_driver, data->intf);
4839         } else if (intf == data->diag) {
4840                 usb_driver_release_interface(&btusb_driver, data->intf);
4841                 if (data->isoc)
4842                         usb_driver_release_interface(&btusb_driver, data->isoc);
4843         }
4844
4845         if (data->oob_wake_irq)
4846                 device_init_wakeup(&data->udev->dev, false);
4847
4848         if (data->reset_gpio)
4849                 gpiod_put(data->reset_gpio);
4850
4851         hci_free_dev(hdev);
4852 }
4853
4854 #ifdef CONFIG_PM
4855 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
4856 {
4857         struct btusb_data *data = usb_get_intfdata(intf);
4858
4859         BT_DBG("intf %p", intf);
4860
4861         if (data->suspend_count++)
4862                 return 0;
4863
4864         spin_lock_irq(&data->txlock);
4865         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
4866                 set_bit(BTUSB_SUSPENDING, &data->flags);
4867                 spin_unlock_irq(&data->txlock);
4868         } else {
4869                 spin_unlock_irq(&data->txlock);
4870                 data->suspend_count--;
4871                 return -EBUSY;
4872         }
4873
4874         cancel_work_sync(&data->work);
4875
4876         btusb_stop_traffic(data);
4877         usb_kill_anchored_urbs(&data->tx_anchor);
4878
4879         if (data->oob_wake_irq && device_may_wakeup(&data->udev->dev)) {
4880                 set_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
4881                 enable_irq_wake(data->oob_wake_irq);
4882                 enable_irq(data->oob_wake_irq);
4883         }
4884
4885         /* For global suspend, Realtek devices lose the loaded fw
4886          * in them. But for autosuspend, firmware should remain.
4887          * Actually, it depends on whether the usb host sends
4888          * set feature (enable wakeup) or not.
4889          */
4890         if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags)) {
4891                 if (PMSG_IS_AUTO(message) &&
4892                     device_can_wakeup(&data->udev->dev))
4893                         data->udev->do_remote_wakeup = 1;
4894                 else if (!PMSG_IS_AUTO(message))
4895                         data->udev->reset_resume = 1;
4896         }
4897
4898         return 0;
4899 }
4900
4901 static void play_deferred(struct btusb_data *data)
4902 {
4903         struct urb *urb;
4904         int err;
4905
4906         while ((urb = usb_get_from_anchor(&data->deferred))) {
4907                 usb_anchor_urb(urb, &data->tx_anchor);
4908
4909                 err = usb_submit_urb(urb, GFP_ATOMIC);
4910                 if (err < 0) {
4911                         if (err != -EPERM && err != -ENODEV)
4912                                 BT_ERR("%s urb %p submission failed (%d)",
4913                                        data->hdev->name, urb, -err);
4914                         kfree(urb->setup_packet);
4915                         usb_unanchor_urb(urb);
4916                         usb_free_urb(urb);
4917                         break;
4918                 }
4919
4920                 data->tx_in_flight++;
4921                 usb_free_urb(urb);
4922         }
4923
4924         /* Cleanup the rest deferred urbs. */
4925         while ((urb = usb_get_from_anchor(&data->deferred))) {
4926                 kfree(urb->setup_packet);
4927                 usb_free_urb(urb);
4928         }
4929 }
4930
4931 static int btusb_resume(struct usb_interface *intf)
4932 {
4933         struct btusb_data *data = usb_get_intfdata(intf);
4934         struct hci_dev *hdev = data->hdev;
4935         int err = 0;
4936
4937         BT_DBG("intf %p", intf);
4938
4939         if (--data->suspend_count)
4940                 return 0;
4941
4942         /* Disable only if not already disabled (keep it balanced) */
4943         if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
4944                 disable_irq(data->oob_wake_irq);
4945                 disable_irq_wake(data->oob_wake_irq);
4946         }
4947
4948         if (!test_bit(HCI_RUNNING, &hdev->flags))
4949                 goto done;
4950
4951         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
4952                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
4953                 if (err < 0) {
4954                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
4955                         goto failed;
4956                 }
4957         }
4958
4959         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
4960                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
4961                 if (err < 0) {
4962                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
4963                         goto failed;
4964                 }
4965
4966                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
4967         }
4968
4969         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
4970                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
4971                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
4972                 else
4973                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
4974         }
4975
4976         spin_lock_irq(&data->txlock);
4977         play_deferred(data);
4978         clear_bit(BTUSB_SUSPENDING, &data->flags);
4979         spin_unlock_irq(&data->txlock);
4980         schedule_work(&data->work);
4981
4982         return 0;
4983
4984 failed:
4985         usb_scuttle_anchored_urbs(&data->deferred);
4986 done:
4987         spin_lock_irq(&data->txlock);
4988         clear_bit(BTUSB_SUSPENDING, &data->flags);
4989         spin_unlock_irq(&data->txlock);
4990
4991         return err;
4992 }
4993 #endif
4994
4995 static struct usb_driver btusb_driver = {
4996         .name           = "btusb",
4997         .probe          = btusb_probe,
4998         .disconnect     = btusb_disconnect,
4999 #ifdef CONFIG_PM
5000         .suspend        = btusb_suspend,
5001         .resume         = btusb_resume,
5002 #endif
5003         .id_table       = btusb_table,
5004         .supports_autosuspend = 1,
5005         .disable_hub_initiated_lpm = 1,
5006 };
5007
5008 module_usb_driver(btusb_driver);
5009
5010 module_param(disable_scofix, bool, 0644);
5011 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
5012
5013 module_param(force_scofix, bool, 0644);
5014 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
5015
5016 module_param(enable_autosuspend, bool, 0644);
5017 MODULE_PARM_DESC(enable_autosuspend, "Enable USB autosuspend by default");
5018
5019 module_param(reset, bool, 0644);
5020 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
5021
5022 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
5023 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
5024 MODULE_VERSION(VERSION);
5025 MODULE_LICENSE("GPL");