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