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
  64 static const struct usb_device_id btusb_table[] = {
  65         /* Generic Bluetooth USB device */
  66         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  67
  68         /* Generic Bluetooth AMP device */
  69         { USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP },
  70
  71         /* Generic Bluetooth USB interface */
  72         { USB_INTERFACE_INFO(0xe0, 0x01, 0x01) },
  73
  74         /* Apple-specific (Broadcom) devices */
  75         { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01),
  76           .driver_info = BTUSB_BCM_APPLE | BTUSB_IFNUM_2 },
  77
  78         /* MediaTek MT76x0E */
  79         { USB_DEVICE(0x0e8d, 0x763f) },
  80
  81         /* Broadcom SoftSailing reporting vendor specific */
  82         { USB_DEVICE(0x0a5c, 0x21e1) },
  83
  84         /* Apple MacBookPro 7,1 */
  85         { USB_DEVICE(0x05ac, 0x8213) },
  86
  87         /* Apple iMac11,1 */
  88         { USB_DEVICE(0x05ac, 0x8215) },
  89
  90         /* Apple MacBookPro6,2 */
  91         { USB_DEVICE(0x05ac, 0x8218) },
  92
  93         /* Apple MacBookAir3,1, MacBookAir3,2 */
  94         { USB_DEVICE(0x05ac, 0x821b) },
  95
  96         /* Apple MacBookAir4,1 */
  97         { USB_DEVICE(0x05ac, 0x821f) },
  98
  99         /* Apple MacBookPro8,2 */
 100         { USB_DEVICE(0x05ac, 0x821a) },
 101
 102         /* Apple MacMini5,1 */
 103         { USB_DEVICE(0x05ac, 0x8281) },
 104
 105         /* AVM BlueFRITZ! USB v2.0 */
 106         { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE },
 107
 108         /* Bluetooth Ultraport Module from IBM */
 109         { USB_DEVICE(0x04bf, 0x030a) },
 110
 111         /* ALPS Modules with non-standard id */
 112         { USB_DEVICE(0x044e, 0x3001) },
 113         { USB_DEVICE(0x044e, 0x3002) },
 114
 115         /* Ericsson with non-standard id */
 116         { USB_DEVICE(0x0bdb, 0x1002) },
 117
 118         /* Canyon CN-BTU1 with HID interfaces */
 119         { USB_DEVICE(0x0c10, 0x0000) },
 120
 121         /* Broadcom BCM20702A0 */
 122         { USB_DEVICE(0x413c, 0x8197) },
 123
 124         /* Broadcom BCM20702B0 (Dynex/Insignia) */
 125         { USB_DEVICE(0x19ff, 0x0239), .driver_info = BTUSB_BCM_PATCHRAM },
 126
 127         /* Broadcom BCM43142A0 (Foxconn/Lenovo) */
 128         { USB_VENDOR_AND_INTERFACE_INFO(0x105b, 0xff, 0x01, 0x01),
 129           .driver_info = BTUSB_BCM_PATCHRAM },
 130
 131         /* Broadcom BCM920703 (HTC Vive) */
 132         { USB_VENDOR_AND_INTERFACE_INFO(0x0bb4, 0xff, 0x01, 0x01),
 133           .driver_info = BTUSB_BCM_PATCHRAM },
 134
 135         /* Foxconn - Hon Hai */
 136         { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01),
 137           .driver_info = BTUSB_BCM_PATCHRAM },
 138
 139         /* Lite-On Technology - Broadcom based */
 140         { USB_VENDOR_AND_INTERFACE_INFO(0x04ca, 0xff, 0x01, 0x01),
 141           .driver_info = BTUSB_BCM_PATCHRAM },
 142
 143         /* Broadcom devices with vendor specific id */
 144         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
 145           .driver_info = BTUSB_BCM_PATCHRAM },
 146
 147         /* ASUSTek Computer - Broadcom based */
 148         { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01),
 149           .driver_info = BTUSB_BCM_PATCHRAM },
 150
 151         /* Belkin F8065bf - Broadcom based */
 152         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01),
 153           .driver_info = BTUSB_BCM_PATCHRAM },
 154
 155         /* IMC Networks - Broadcom based */
 156         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01),
 157           .driver_info = BTUSB_BCM_PATCHRAM },
 158
 159         /* Dell Computer - Broadcom based  */
 160         { USB_VENDOR_AND_INTERFACE_INFO(0x413c, 0xff, 0x01, 0x01),
 161           .driver_info = BTUSB_BCM_PATCHRAM },
 162
 163         /* Toshiba Corp - Broadcom based */
 164         { USB_VENDOR_AND_INTERFACE_INFO(0x0930, 0xff, 0x01, 0x01),
 165           .driver_info = BTUSB_BCM_PATCHRAM },
 166
 167         /* Intel Bluetooth USB Bootloader (RAM module) */
 168         { USB_DEVICE(0x8087, 0x0a5a),
 169           .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
 170
 171         { }     /* Terminating entry */
 172 };
 173
 174 MODULE_DEVICE_TABLE(usb, btusb_table);
 175
 176 static const struct usb_device_id blacklist_table[] = {
 177         /* CSR BlueCore devices */
 178         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 179
 180         /* Broadcom BCM2033 without firmware */
 181         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 182
 183         /* Broadcom BCM2045 devices */
 184         { USB_DEVICE(0x0a5c, 0x2045), .driver_info = BTUSB_BCM2045 },
 185
 186         /* Atheros 3011 with sflash firmware */
 187         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 188         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 189         { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE },
 190         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 191         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 192         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 193         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 194
 195         /* Atheros AR9285 Malbec with sflash firmware */
 196         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 197
 198         /* Atheros 3012 with sflash firmware */
 199         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 200         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 201         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 202         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 203         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 204         { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
 205         { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
 206         { USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 },
 207         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 208         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 209         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 210         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 211         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 212         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 213         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 214         { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
 215         { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
 216         { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
 217         { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 },
 218         { USB_DEVICE(0x04ca, 0x3018), .driver_info = BTUSB_ATH3012 },
 219         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 220         { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
 221         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 222         { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
 223         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 224         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 225         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 226         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 227         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 228         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
 229         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 230         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 231         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 232         { USB_DEVICE(0x0cf3, 0x817b), .driver_info = BTUSB_ATH3012 },
 233         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 234         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 235         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 236         { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 },
 237         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 238         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 239         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 240         { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 },
 241         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 242         { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
 243         { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
 244         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
 245         { USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 },
 246         { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
 247         { USB_DEVICE(0x13d3, 0x3487), .driver_info = BTUSB_ATH3012 },
 248         { USB_DEVICE(0x13d3, 0x3490), .driver_info = BTUSB_ATH3012 },
 249
 250         /* Atheros AR5BBU12 with sflash firmware */
 251         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 252
 253         /* Atheros AR5BBU12 with sflash firmware */
 254         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 255         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 256
 257         /* QCA ROME chipset */
 258         { USB_DEVICE(0x0cf3, 0x535b), .driver_info = BTUSB_QCA_ROME |
 259                                                      BTUSB_WIDEBAND_SPEECH },
 260         { USB_DEVICE(0x0cf3, 0xe007), .driver_info = BTUSB_QCA_ROME |
 261                                                      BTUSB_WIDEBAND_SPEECH },
 262         { USB_DEVICE(0x0cf3, 0xe009), .driver_info = BTUSB_QCA_ROME |
 263                                                      BTUSB_WIDEBAND_SPEECH },
 264         { USB_DEVICE(0x0cf3, 0xe010), .driver_info = BTUSB_QCA_ROME |
 265                                                      BTUSB_WIDEBAND_SPEECH },
 266         { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME |
 267                                                      BTUSB_WIDEBAND_SPEECH },
 268         { USB_DEVICE(0x0cf3, 0xe301), .driver_info = BTUSB_QCA_ROME |
 269                                                      BTUSB_WIDEBAND_SPEECH },
 270         { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME |
 271                                                      BTUSB_WIDEBAND_SPEECH },
 272         { USB_DEVICE(0x0cf3, 0xe500), .driver_info = BTUSB_QCA_ROME |
 273                                                      BTUSB_WIDEBAND_SPEECH },
 274         { USB_DEVICE(0x0489, 0xe092), .driver_info = BTUSB_QCA_ROME |
 275                                                      BTUSB_WIDEBAND_SPEECH },
 276         { USB_DEVICE(0x0489, 0xe09f), .driver_info = BTUSB_QCA_ROME |
 277                                                      BTUSB_WIDEBAND_SPEECH },
 278         { USB_DEVICE(0x0489, 0xe0a2), .driver_info = BTUSB_QCA_ROME |
 279                                                      BTUSB_WIDEBAND_SPEECH },
 280         { USB_DEVICE(0x04ca, 0x3011), .driver_info = BTUSB_QCA_ROME |
 281                                                      BTUSB_WIDEBAND_SPEECH },
 282         { USB_DEVICE(0x04ca, 0x3015), .driver_info = BTUSB_QCA_ROME |
 283                                                      BTUSB_WIDEBAND_SPEECH },
 284         { USB_DEVICE(0x04ca, 0x3016), .driver_info = BTUSB_QCA_ROME |
 285                                                      BTUSB_WIDEBAND_SPEECH },
 286         { USB_DEVICE(0x04ca, 0x301a), .driver_info = BTUSB_QCA_ROME |
 287                                                      BTUSB_WIDEBAND_SPEECH },
 288         { USB_DEVICE(0x04ca, 0x3021), .driver_info = BTUSB_QCA_ROME |
 289                                                      BTUSB_WIDEBAND_SPEECH },
 290         { USB_DEVICE(0x13d3, 0x3491), .driver_info = BTUSB_QCA_ROME |
 291                                                      BTUSB_WIDEBAND_SPEECH },
 292         { USB_DEVICE(0x13d3, 0x3496), .driver_info = BTUSB_QCA_ROME |
 293                                                      BTUSB_WIDEBAND_SPEECH },
 294         { USB_DEVICE(0x13d3, 0x3501), .driver_info = BTUSB_QCA_ROME |
 295                                                      BTUSB_WIDEBAND_SPEECH },
 296
 297         /* QCA WCN6855 chipset */
 298         { USB_DEVICE(0x0cf3, 0xe600), .driver_info = BTUSB_QCA_WCN6855 |
 299                                                      BTUSB_WIDEBAND_SPEECH },
 300
 301         /* Broadcom BCM2035 */
 302         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 303         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 304         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 305
 306         /* Broadcom BCM2045 */
 307         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 308         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 309
 310         /* IBM/Lenovo ThinkPad with Broadcom chip */
 311         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 312         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 313
 314         /* HP laptop with Broadcom chip */
 315         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 316
 317         /* Dell laptop with Broadcom chip */
 318         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 319
 320         /* Dell Wireless 370 and 410 devices */
 321         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 322         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 323
 324         /* Belkin F8T012 and F8T013 devices */
 325         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 326         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 327
 328         /* Asus WL-BTD202 device */
 329         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 330
 331         /* Kensington Bluetooth USB adapter */
 332         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 333
 334         /* RTX Telecom based adapters with buggy SCO support */
 335         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 336         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 337
 338         /* CONWISE Technology based adapters with buggy SCO support */
 339         { USB_DEVICE(0x0e5e, 0x6622),
 340           .driver_info = BTUSB_BROKEN_ISOC | BTUSB_CW6622},
 341
 342         /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
 343         { USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE },
 344
 345         /* Digianswer devices */
 346         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 347         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 348
 349         /* CSR BlueCore Bluetooth Sniffer */
 350         { USB_DEVICE(0x0a12, 0x0002),
 351           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 352
 353         /* Frontline ComProbe Bluetooth Sniffer */
 354         { USB_DEVICE(0x16d3, 0x0002),
 355           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 356
 357         /* Marvell Bluetooth devices */
 358         { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
 359         { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
 360         { USB_DEVICE(0x1286, 0x204e), .driver_info = BTUSB_MARVELL },
 361
 362         /* Intel Bluetooth devices */
 363         { USB_DEVICE(0x8087, 0x0025), .driver_info = BTUSB_INTEL_NEW |
 364                                                      BTUSB_WIDEBAND_SPEECH |
 365                                                      BTUSB_VALID_LE_STATES },
 366         { USB_DEVICE(0x8087, 0x0026), .driver_info = BTUSB_INTEL_NEW |
 367                                                      BTUSB_WIDEBAND_SPEECH },
 368         { USB_DEVICE(0x8087, 0x0029), .driver_info = BTUSB_INTEL_NEW |
 369                                                      BTUSB_WIDEBAND_SPEECH },
 370         { USB_DEVICE(0x8087, 0x0032), .driver_info = BTUSB_INTEL_NEW |
 371                                                      BTUSB_WIDEBAND_SPEECH},
 372         { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR },
 373         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 374         { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
 375         { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_NEW |
 376                                                      BTUSB_WIDEBAND_SPEECH },
 377         { USB_DEVICE(0x8087, 0x0aa7), .driver_info = BTUSB_INTEL |
 378                                                      BTUSB_WIDEBAND_SPEECH },
 379         { USB_DEVICE(0x8087, 0x0aaa), .driver_info = BTUSB_INTEL_NEW |
 380                                                      BTUSB_WIDEBAND_SPEECH |
 381                                                      BTUSB_VALID_LE_STATES },
 382         { USB_DEVICE(0x10ab, 0x9309), .driver_info = BTUSB_QCA_WCN6855 |
 383                                                      BTUSB_WIDEBAND_SPEECH |
 384                                                      BTUSB_VALID_LE_STATES },
 385         { USB_DEVICE(0x10ab, 0x9409), .driver_info = BTUSB_QCA_WCN6855 |
 386                                                      BTUSB_WIDEBAND_SPEECH |
 387                                                      BTUSB_VALID_LE_STATES },
 388         { USB_DEVICE(0x0489, 0xe0d0), .driver_info = BTUSB_QCA_WCN6855 |
 389                                                      BTUSB_WIDEBAND_SPEECH |
 390                                                      BTUSB_VALID_LE_STATES },
 391
 392         /* Other Intel Bluetooth devices */
 393         { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01),
 394           .driver_info = BTUSB_IGNORE },
 395
 396         /* Realtek 8821CE Bluetooth devices */
 397         { USB_DEVICE(0x13d3, 0x3529), .driver_info = BTUSB_REALTEK |
 398                                                      BTUSB_WIDEBAND_SPEECH },
 399
 400         /* Realtek 8822CE Bluetooth devices */
 401         { USB_DEVICE(0x0bda, 0xb00c), .driver_info = BTUSB_REALTEK |
 402                                                      BTUSB_WIDEBAND_SPEECH },
 403         { USB_DEVICE(0x0bda, 0xc822), .driver_info = BTUSB_REALTEK |
 404                                                      BTUSB_WIDEBAND_SPEECH },
 405
 406         /* Realtek 8852CE Bluetooth devices */
 407         { USB_DEVICE(0x04ca, 0x4007), .driver_info = BTUSB_REALTEK |
 408                                                      BTUSB_WIDEBAND_SPEECH },
 409         { USB_DEVICE(0x04c5, 0x1675), .driver_info = BTUSB_REALTEK |
 410                                                      BTUSB_WIDEBAND_SPEECH },
 411         { USB_DEVICE(0x0cb8, 0xc558), .driver_info = BTUSB_REALTEK |
 412                                                      BTUSB_WIDEBAND_SPEECH },
 413         { USB_DEVICE(0x13d3, 0x3587), .driver_info = BTUSB_REALTEK |
 414                                                      BTUSB_WIDEBAND_SPEECH },
 415         { USB_DEVICE(0x13d3, 0x3586), .driver_info = BTUSB_REALTEK |
 416                                                      BTUSB_WIDEBAND_SPEECH },
 417
 418         /* Realtek 8852BE Bluetooth devices */
 419         { USB_DEVICE(0x0cb8, 0xc559), .driver_info = BTUSB_REALTEK |
 420                                                      BTUSB_WIDEBAND_SPEECH },
 421         { USB_DEVICE(0x0bda, 0x887b), .driver_info = BTUSB_REALTEK |
 422                                                      BTUSB_WIDEBAND_SPEECH },
 423         { USB_DEVICE(0x0bda, 0xb85b), .driver_info = BTUSB_REALTEK |
 424                                                      BTUSB_WIDEBAND_SPEECH },
 425         { USB_DEVICE(0x13d3, 0x3570), .driver_info = BTUSB_REALTEK |
 426                                                      BTUSB_WIDEBAND_SPEECH },
 427         { USB_DEVICE(0x13d3, 0x3571), .driver_info = BTUSB_REALTEK |
 428                                                      BTUSB_WIDEBAND_SPEECH },
 429
 430         /* Realtek Bluetooth devices */
 431         { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01),
 432           .driver_info = BTUSB_REALTEK },
 433
 434         /* MediaTek Bluetooth devices */
 435         { USB_VENDOR_AND_INTERFACE_INFO(0x0e8d, 0xe0, 0x01, 0x01),
 436           .driver_info = BTUSB_MEDIATEK |
 437                          BTUSB_WIDEBAND_SPEECH |
 438                          BTUSB_VALID_LE_STATES },
 439
 440         /* MediaTek MT7922A Bluetooth devices */
 441         { USB_DEVICE(0x0489, 0xe0d8), .driver_info = BTUSB_MEDIATEK |
 442                                                      BTUSB_WIDEBAND_SPEECH |
 443                                                      BTUSB_VALID_LE_STATES },
 444         { USB_DEVICE(0x0489, 0xe0d9), .driver_info = BTUSB_MEDIATEK |
 445                                                      BTUSB_WIDEBAND_SPEECH |
 446                                                      BTUSB_VALID_LE_STATES },
 447         { USB_DEVICE(0x0489, 0xe0f5), .driver_info = BTUSB_MEDIATEK |
 448                                                      BTUSB_WIDEBAND_SPEECH |
 449                                                      BTUSB_VALID_LE_STATES },
 450         { USB_DEVICE(0x13d3, 0x3568), .driver_info = BTUSB_MEDIATEK |
 451                                                      BTUSB_WIDEBAND_SPEECH |
 452                                                      BTUSB_VALID_LE_STATES },
 453
 454         /* Additional Realtek 8723AE Bluetooth devices */
 455         { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK },
 456         { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK },
 457
 458         /* Additional Realtek 8723BE Bluetooth devices */
 459         { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK },
 460         { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK },
 461         { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
 462         { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
 463         { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },
 464         { USB_DEVICE(0x13d3, 0x3494), .driver_info = BTUSB_REALTEK },
 465
 466         /* Additional Realtek 8723BU Bluetooth devices */
 467         { USB_DEVICE(0x7392, 0xa611), .driver_info = BTUSB_REALTEK },
 468
 469         /* Additional Realtek 8723DE Bluetooth devices */
 470         { USB_DEVICE(0x0bda, 0xb009), .driver_info = BTUSB_REALTEK },
 471         { USB_DEVICE(0x2ff8, 0xb011), .driver_info = BTUSB_REALTEK },
 472
 473         /* Additional Realtek 8821AE Bluetooth devices */
 474         { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
 475         { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },
 476         { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK },
 477         { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK },
 478         { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK },
 479
 480         /* Additional Realtek 8822BE Bluetooth devices */
 481         { USB_DEVICE(0x13d3, 0x3526), .driver_info = BTUSB_REALTEK },
 482         { USB_DEVICE(0x0b05, 0x185c), .driver_info = BTUSB_REALTEK },
 483
 484         /* Additional Realtek 8822CE Bluetooth devices */
 485         { USB_DEVICE(0x04ca, 0x4005), .driver_info = BTUSB_REALTEK },
 486         { USB_DEVICE(0x13d3, 0x3548), .driver_info = BTUSB_REALTEK },
 487
 488         /* Silicon Wave based devices */
 489         { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE },
 490
 491         { }     /* Terminating entry */
 492 };
 493
 494 /* The Bluetooth USB module build into some devices needs to be reset on resume,
 495  * this is a problem with the platform (likely shutting off all power) not with
 496  * the module itself. So we use a DMI list to match known broken platforms.
 497  */
 498 static const struct dmi_system_id btusb_needs_reset_resume_table[] = {
 499         {
 500                 /* Dell OptiPlex 3060 (QCA ROME device 0cf3:e007) */
 501                 .matches = {
 502                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 503                         DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 3060"),
 504                 },
 505         },
 506         {
 507                 /* Dell XPS 9360 (QCA ROME device 0cf3:e300) */
 508                 .matches = {
 509                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 510                         DMI_MATCH(DMI_PRODUCT_NAME, "XPS 13 9360"),
 511                 },
 512         },
 513         {
 514                 /* Dell Inspiron 5565 (QCA ROME device 0cf3:e009) */
 515                 .matches = {
 516                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 517                         DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5565"),
 518                 },
 519         },
 520         {}
 521 };
 522
 523 #define BTUSB_MAX_ISOC_FRAMES   10
 524
 525 #define BTUSB_INTR_RUNNING      0
 526 #define BTUSB_BULK_RUNNING      1
 527 #define BTUSB_ISOC_RUNNING      2
 528 #define BTUSB_SUSPENDING        3
 529 #define BTUSB_DID_ISO_RESUME    4
 530 #define BTUSB_BOOTLOADER        5
 531 #define BTUSB_DOWNLOADING       6
 532 #define BTUSB_FIRMWARE_LOADED   7
 533 #define BTUSB_FIRMWARE_FAILED   8
 534 #define BTUSB_BOOTING           9
 535 #define BTUSB_DIAG_RUNNING      10
 536 #define BTUSB_OOB_WAKE_ENABLED  11
 537 #define BTUSB_HW_RESET_ACTIVE   12
 538 #define BTUSB_TX_WAIT_VND_EVT   13
 539 #define BTUSB_WAKEUP_DISABLE    14
 540 #define BTUSB_USE_ALT3_FOR_WBS  15
 541
 542 struct btusb_data {
 543         struct hci_dev       *hdev;
 544         struct usb_device    *udev;
 545         struct usb_interface *intf;
 546         struct usb_interface *isoc;
 547         struct usb_interface *diag;
 548         unsigned isoc_ifnum;
 549
 550         unsigned long flags;
 551
 552         struct work_struct work;
 553         struct work_struct waker;
 554
 555         struct usb_anchor deferred;
 556         struct usb_anchor tx_anchor;
 557         int tx_in_flight;
 558         spinlock_t txlock;
 559
 560         struct usb_anchor intr_anchor;
 561         struct usb_anchor bulk_anchor;
 562         struct usb_anchor isoc_anchor;
 563         struct usb_anchor diag_anchor;
 564         struct usb_anchor ctrl_anchor;
 565         spinlock_t rxlock;
 566
 567         struct sk_buff *evt_skb;
 568         struct sk_buff *acl_skb;
 569         struct sk_buff *sco_skb;
 570
 571         struct usb_endpoint_descriptor *intr_ep;
 572         struct usb_endpoint_descriptor *bulk_tx_ep;
 573         struct usb_endpoint_descriptor *bulk_rx_ep;
 574         struct usb_endpoint_descriptor *isoc_tx_ep;
 575         struct usb_endpoint_descriptor *isoc_rx_ep;
 576         struct usb_endpoint_descriptor *diag_tx_ep;
 577         struct usb_endpoint_descriptor *diag_rx_ep;
 578
 579         struct gpio_desc *reset_gpio;
 580
 581         __u8 cmdreq_type;
 582         __u8 cmdreq;
 583
 584         unsigned int sco_num;
 585         unsigned int air_mode;
 586         bool usb_alt6_packet_flow;
 587         int isoc_altsetting;
 588         int suspend_count;
 589
 590         int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
 591         int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
 592
 593         int (*setup_on_usb)(struct hci_dev *hdev);
 594
 595         int oob_wake_irq;   /* irq for out-of-band wake-on-bt */
 596         unsigned cmd_timeout_cnt;
 597 };
 598
 599 static void btusb_intel_cmd_timeout(struct hci_dev *hdev)
 600 {
 601         struct btusb_data *data = hci_get_drvdata(hdev);
 602         struct gpio_desc *reset_gpio = data->reset_gpio;
 603
 604         if (++data->cmd_timeout_cnt < 5)
 605                 return;
 606
 607         if (!reset_gpio) {
 608                 bt_dev_err(hdev, "No way to reset. Ignoring and continuing");
 609                 return;
 610         }
 611
 612         /*
 613          * Toggle the hard reset line if the platform provides one. The reset
 614          * is going to yank the device off the USB and then replug. So doing
 615          * once is enough. The cleanup is handled correctly on the way out
 616          * (standard USB disconnect), and the new device is detected cleanly
 617          * and bound to the driver again like it should be.
 618          */
 619         if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
 620                 bt_dev_err(hdev, "last reset failed? Not resetting again");
 621                 return;
 622         }
 623
 624         bt_dev_err(hdev, "Initiating HW reset via gpio");
 625         gpiod_set_value_cansleep(reset_gpio, 1);
 626         msleep(100);
 627         gpiod_set_value_cansleep(reset_gpio, 0);
 628 }
 629
 630 static void btusb_rtl_cmd_timeout(struct hci_dev *hdev)
 631 {
 632         struct btusb_data *data = hci_get_drvdata(hdev);
 633         struct gpio_desc *reset_gpio = data->reset_gpio;
 634
 635         if (++data->cmd_timeout_cnt < 5)
 636                 return;
 637
 638         if (!reset_gpio) {
 639                 bt_dev_err(hdev, "No gpio to reset Realtek device, ignoring");
 640                 return;
 641         }
 642
 643         /* Toggle the hard reset line. The Realtek device is going to
 644          * yank itself off the USB and then replug. The cleanup is handled
 645          * correctly on the way out (standard USB disconnect), and the new
 646          * device is detected cleanly and bound to the driver again like
 647          * it should be.
 648          */
 649         if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
 650                 bt_dev_err(hdev, "last reset failed? Not resetting again");
 651                 return;
 652         }
 653
 654         bt_dev_err(hdev, "Reset Realtek device via gpio");
 655         gpiod_set_value_cansleep(reset_gpio, 1);
 656         msleep(200);
 657         gpiod_set_value_cansleep(reset_gpio, 0);
 658 }
 659
 660 static void btusb_qca_cmd_timeout(struct hci_dev *hdev)
 661 {
 662         struct btusb_data *data = hci_get_drvdata(hdev);
 663         int err;
 664
 665         if (++data->cmd_timeout_cnt < 5)
 666                 return;
 667
 668         bt_dev_err(hdev, "Multiple cmd timeouts seen. Resetting usb device.");
 669         /* This is not an unbalanced PM reference since the device will reset */
 670         err = usb_autopm_get_interface(data->intf);
 671         if (!err)
 672                 usb_queue_reset_device(data->intf);
 673         else
 674                 bt_dev_err(hdev, "Failed usb_autopm_get_interface with %d", err);
 675 }
 676
 677 static inline void btusb_free_frags(struct btusb_data *data)
 678 {
 679         unsigned long flags;
 680
 681         spin_lock_irqsave(&data->rxlock, flags);
 682
 683         dev_kfree_skb_irq(data->evt_skb);
 684         data->evt_skb = NULL;
 685
 686         dev_kfree_skb_irq(data->acl_skb);
 687         data->acl_skb = NULL;
 688
 689         dev_kfree_skb_irq(data->sco_skb);
 690         data->sco_skb = NULL;
 691
 692         spin_unlock_irqrestore(&data->rxlock, flags);
 693 }
 694
 695 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
 696 {
 697         struct sk_buff *skb;
 698         unsigned long flags;
 699         int err = 0;
 700
 701         spin_lock_irqsave(&data->rxlock, flags);
 702         skb = data->evt_skb;
 703
 704         while (count) {
 705                 int len;
 706
 707                 if (!skb) {
 708                         skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
 709                         if (!skb) {
 710                                 err = -ENOMEM;
 711                                 break;
 712                         }
 713
 714                         hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
 715                         hci_skb_expect(skb) = HCI_EVENT_HDR_SIZE;
 716                 }
 717
 718                 len = min_t(uint, hci_skb_expect(skb), count);
 719                 skb_put_data(skb, buffer, len);
 720
 721                 count -= len;
 722                 buffer += len;
 723                 hci_skb_expect(skb) -= len;
 724
 725                 if (skb->len == HCI_EVENT_HDR_SIZE) {
 726                         /* Complete event header */
 727                         hci_skb_expect(skb) = hci_event_hdr(skb)->plen;
 728
 729                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 730                                 kfree_skb(skb);
 731                                 skb = NULL;
 732
 733                                 err = -EILSEQ;
 734                                 break;
 735                         }
 736                 }
 737
 738                 if (!hci_skb_expect(skb)) {
 739                         /* Complete frame */
 740                         data->recv_event(data->hdev, skb);
 741                         skb = NULL;
 742                 }
 743         }
 744
 745         data->evt_skb = skb;
 746         spin_unlock_irqrestore(&data->rxlock, flags);
 747
 748         return err;
 749 }
 750
 751 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
 752 {
 753         struct sk_buff *skb;
 754         unsigned long flags;
 755         int err = 0;
 756
 757         spin_lock_irqsave(&data->rxlock, flags);
 758         skb = data->acl_skb;
 759
 760         while (count) {
 761                 int len;
 762
 763                 if (!skb) {
 764                         skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
 765                         if (!skb) {
 766                                 err = -ENOMEM;
 767                                 break;
 768                         }
 769
 770                         hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT;
 771                         hci_skb_expect(skb) = HCI_ACL_HDR_SIZE;
 772                 }
 773
 774                 len = min_t(uint, hci_skb_expect(skb), count);
 775                 skb_put_data(skb, buffer, len);
 776
 777                 count -= len;
 778                 buffer += len;
 779                 hci_skb_expect(skb) -= len;
 780
 781                 if (skb->len == HCI_ACL_HDR_SIZE) {
 782                         __le16 dlen = hci_acl_hdr(skb)->dlen;
 783
 784                         /* Complete ACL header */
 785                         hci_skb_expect(skb) = __le16_to_cpu(dlen);
 786
 787                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 788                                 kfree_skb(skb);
 789                                 skb = NULL;
 790
 791                                 err = -EILSEQ;
 792                                 break;
 793                         }
 794                 }
 795
 796                 if (!hci_skb_expect(skb)) {
 797                         /* Complete frame */
 798                         hci_recv_frame(data->hdev, skb);
 799                         skb = NULL;
 800                 }
 801         }
 802
 803         data->acl_skb = skb;
 804         spin_unlock_irqrestore(&data->rxlock, flags);
 805
 806         return err;
 807 }
 808
 809 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
 810 {
 811         struct sk_buff *skb;
 812         unsigned long flags;
 813         int err = 0;
 814
 815         spin_lock_irqsave(&data->rxlock, flags);
 816         skb = data->sco_skb;
 817
 818         while (count) {
 819                 int len;
 820
 821                 if (!skb) {
 822                         skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
 823                         if (!skb) {
 824                                 err = -ENOMEM;
 825                                 break;
 826                         }
 827
 828                         hci_skb_pkt_type(skb) = HCI_SCODATA_PKT;
 829                         hci_skb_expect(skb) = HCI_SCO_HDR_SIZE;
 830                 }
 831
 832                 len = min_t(uint, hci_skb_expect(skb), count);
 833                 skb_put_data(skb, buffer, len);
 834
 835                 count -= len;
 836                 buffer += len;
 837                 hci_skb_expect(skb) -= len;
 838
 839                 if (skb->len == HCI_SCO_HDR_SIZE) {
 840                         /* Complete SCO header */
 841                         hci_skb_expect(skb) = hci_sco_hdr(skb)->dlen;
 842
 843                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 844                                 kfree_skb(skb);
 845                                 skb = NULL;
 846
 847                                 err = -EILSEQ;
 848                                 break;
 849                         }
 850                 }
 851
 852                 if (!hci_skb_expect(skb)) {
 853                         /* Complete frame */
 854                         hci_recv_frame(data->hdev, skb);
 855                         skb = NULL;
 856                 }
 857         }
 858
 859         data->sco_skb = skb;
 860         spin_unlock_irqrestore(&data->rxlock, flags);
 861
 862         return err;
 863 }
 864
 865 static void btusb_intr_complete(struct urb *urb)
 866 {
 867         struct hci_dev *hdev = urb->context;
 868         struct btusb_data *data = hci_get_drvdata(hdev);
 869         int err;
 870
 871         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 872                urb->actual_length);
 873
 874         if (!test_bit(HCI_RUNNING, &hdev->flags))
 875                 return;
 876
 877         if (urb->status == 0) {
 878                 hdev->stat.byte_rx += urb->actual_length;
 879
 880                 if (btusb_recv_intr(data, urb->transfer_buffer,
 881                                     urb->actual_length) < 0) {
 882                         bt_dev_err(hdev, "corrupted event packet");
 883                         hdev->stat.err_rx++;
 884                 }
 885         } else if (urb->status == -ENOENT) {
 886                 /* Avoid suspend failed when usb_kill_urb */
 887                 return;
 888         }
 889
 890         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 891                 return;
 892
 893         usb_mark_last_busy(data->udev);
 894         usb_anchor_urb(urb, &data->intr_anchor);
 895
 896         err = usb_submit_urb(urb, GFP_ATOMIC);
 897         if (err < 0) {
 898                 /* -EPERM: urb is being killed;
 899                  * -ENODEV: device got disconnected
 900                  */
 901                 if (err != -EPERM && err != -ENODEV)
 902                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
 903                                    urb, -err);
 904                 usb_unanchor_urb(urb);
 905         }
 906 }
 907
 908 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 909 {
 910         struct btusb_data *data = hci_get_drvdata(hdev);
 911         struct urb *urb;
 912         unsigned char *buf;
 913         unsigned int pipe;
 914         int err, size;
 915
 916         BT_DBG("%s", hdev->name);
 917
 918         if (!data->intr_ep)
 919                 return -ENODEV;
 920
 921         urb = usb_alloc_urb(0, mem_flags);
 922         if (!urb)
 923                 return -ENOMEM;
 924
 925         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 926
 927         buf = kmalloc(size, mem_flags);
 928         if (!buf) {
 929                 usb_free_urb(urb);
 930                 return -ENOMEM;
 931         }
 932
 933         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 934
 935         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 936                          btusb_intr_complete, hdev, data->intr_ep->bInterval);
 937
 938         urb->transfer_flags |= URB_FREE_BUFFER;
 939
 940         usb_anchor_urb(urb, &data->intr_anchor);
 941
 942         err = usb_submit_urb(urb, mem_flags);
 943         if (err < 0) {
 944                 if (err != -EPERM && err != -ENODEV)
 945                         bt_dev_err(hdev, "urb %p submission failed (%d)",
 946                                    urb, -err);
 947                 usb_unanchor_urb(urb);
 948         }
 949
 950         usb_free_urb(urb);
 951
 952         return err;
 953 }
 954
 955 static void btusb_bulk_complete(struct urb *urb)
 956 {
 957         struct hci_dev *hdev = urb->context;
 958         struct btusb_data *data = hci_get_drvdata(hdev);
 959         int err;
 960
 961         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 962                urb->actual_length);
 963
 964         if (!test_bit(HCI_RUNNING, &hdev->flags))
 965                 return;
 966
 967         if (urb->status == 0) {
 968                 hdev->stat.byte_rx += urb->actual_length;
 969
 970                 if (data->recv_bulk(data, urb->transfer_buffer,
 971                                     urb->actual_length) < 0) {
 972                         bt_dev_err(hdev, "corrupted ACL packet");
 973                         hdev->stat.err_rx++;
 974                 }
 975         } else if (urb->status == -ENOENT) {
 976                 /* Avoid suspend failed when usb_kill_urb */
 977                 return;
 978         }
 979
 980         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 981                 return;
 982
 983         usb_anchor_urb(urb, &data->bulk_anchor);
 984         usb_mark_last_busy(data->udev);
 985
 986         err = usb_submit_urb(urb, GFP_ATOMIC);
 987         if (err < 0) {
 988                 /* -EPERM: urb is being killed;
 989                  * -ENODEV: device got disconnected
 990                  */
 991                 if (err != -EPERM && err != -ENODEV)
 992                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
 993                                    urb, -err);
 994                 usb_unanchor_urb(urb);
 995         }
 996 }
 997
 998 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 999 {
1000         struct btusb_data *data = hci_get_drvdata(hdev);
1001         struct urb *urb;
1002         unsigned char *buf;
1003         unsigned int pipe;
1004         int err, size = HCI_MAX_FRAME_SIZE;
1005
1006         BT_DBG("%s", hdev->name);
1007
1008         if (!data->bulk_rx_ep)
1009                 return -ENODEV;
1010
1011         urb = usb_alloc_urb(0, mem_flags);
1012         if (!urb)
1013                 return -ENOMEM;
1014
1015         buf = kmalloc(size, mem_flags);
1016         if (!buf) {
1017                 usb_free_urb(urb);
1018                 return -ENOMEM;
1019         }
1020
1021         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
1022
1023         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
1024                           btusb_bulk_complete, hdev);
1025
1026         urb->transfer_flags |= URB_FREE_BUFFER;
1027
1028         usb_mark_last_busy(data->udev);
1029         usb_anchor_urb(urb, &data->bulk_anchor);
1030
1031         err = usb_submit_urb(urb, mem_flags);
1032         if (err < 0) {
1033                 if (err != -EPERM && err != -ENODEV)
1034                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1035                                    urb, -err);
1036                 usb_unanchor_urb(urb);
1037         }
1038
1039         usb_free_urb(urb);
1040
1041         return err;
1042 }
1043
1044 static void btusb_isoc_complete(struct urb *urb)
1045 {
1046         struct hci_dev *hdev = urb->context;
1047         struct btusb_data *data = hci_get_drvdata(hdev);
1048         int i, err;
1049
1050         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1051                urb->actual_length);
1052
1053         if (!test_bit(HCI_RUNNING, &hdev->flags))
1054                 return;
1055
1056         if (urb->status == 0) {
1057                 for (i = 0; i < urb->number_of_packets; i++) {
1058                         unsigned int offset = urb->iso_frame_desc[i].offset;
1059                         unsigned int length = urb->iso_frame_desc[i].actual_length;
1060
1061                         if (urb->iso_frame_desc[i].status)
1062                                 continue;
1063
1064                         hdev->stat.byte_rx += length;
1065
1066                         if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
1067                                             length) < 0) {
1068                                 bt_dev_err(hdev, "corrupted SCO packet");
1069                                 hdev->stat.err_rx++;
1070                         }
1071                 }
1072         } else if (urb->status == -ENOENT) {
1073                 /* Avoid suspend failed when usb_kill_urb */
1074                 return;
1075         }
1076
1077         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
1078                 return;
1079
1080         usb_anchor_urb(urb, &data->isoc_anchor);
1081
1082         err = usb_submit_urb(urb, GFP_ATOMIC);
1083         if (err < 0) {
1084                 /* -EPERM: urb is being killed;
1085                  * -ENODEV: device got disconnected
1086                  */
1087                 if (err != -EPERM && err != -ENODEV)
1088                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1089                                    urb, -err);
1090                 usb_unanchor_urb(urb);
1091         }
1092 }
1093
1094 static inline void __fill_isoc_descriptor_msbc(struct urb *urb, int len,
1095                                                int mtu, struct btusb_data *data)
1096 {
1097         int i, offset = 0;
1098         unsigned int interval;
1099
1100         BT_DBG("len %d mtu %d", len, mtu);
1101
1102         /* For mSBC ALT 6 setting the host will send the packet at continuous
1103          * flow. As per core spec 5, vol 4, part B, table 2.1. For ALT setting
1104          * 6 the HCI PACKET INTERVAL should be 7.5ms for every usb packets.
1105          * To maintain the rate we send 63bytes of usb packets alternatively for
1106          * 7ms and 8ms to maintain the rate as 7.5ms.
1107          */
1108         if (data->usb_alt6_packet_flow) {
1109                 interval = 7;
1110                 data->usb_alt6_packet_flow = false;
1111         } else {
1112                 interval = 6;
1113                 data->usb_alt6_packet_flow = true;
1114         }
1115
1116         for (i = 0; i < interval; i++) {
1117                 urb->iso_frame_desc[i].offset = offset;
1118                 urb->iso_frame_desc[i].length = offset;
1119         }
1120
1121         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
1122                 urb->iso_frame_desc[i].offset = offset;
1123                 urb->iso_frame_desc[i].length = len;
1124                 i++;
1125         }
1126
1127         urb->number_of_packets = i;
1128 }
1129
1130 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
1131 {
1132         int i, offset = 0;
1133
1134         BT_DBG("len %d mtu %d", len, mtu);
1135
1136         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
1137                                         i++, offset += mtu, len -= mtu) {
1138                 urb->iso_frame_desc[i].offset = offset;
1139                 urb->iso_frame_desc[i].length = mtu;
1140         }
1141
1142         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
1143                 urb->iso_frame_desc[i].offset = offset;
1144                 urb->iso_frame_desc[i].length = len;
1145                 i++;
1146         }
1147
1148         urb->number_of_packets = i;
1149 }
1150
1151 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
1152 {
1153         struct btusb_data *data = hci_get_drvdata(hdev);
1154         struct urb *urb;
1155         unsigned char *buf;
1156         unsigned int pipe;
1157         int err, size;
1158
1159         BT_DBG("%s", hdev->name);
1160
1161         if (!data->isoc_rx_ep)
1162                 return -ENODEV;
1163
1164         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
1165         if (!urb)
1166                 return -ENOMEM;
1167
1168         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
1169                                                 BTUSB_MAX_ISOC_FRAMES;
1170
1171         buf = kmalloc(size, mem_flags);
1172         if (!buf) {
1173                 usb_free_urb(urb);
1174                 return -ENOMEM;
1175         }
1176
1177         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
1178
1179         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
1180                          hdev, data->isoc_rx_ep->bInterval);
1181
1182         urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
1183
1184         __fill_isoc_descriptor(urb, size,
1185                                le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
1186
1187         usb_anchor_urb(urb, &data->isoc_anchor);
1188
1189         err = usb_submit_urb(urb, mem_flags);
1190         if (err < 0) {
1191                 if (err != -EPERM && err != -ENODEV)
1192                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1193                                    urb, -err);
1194                 usb_unanchor_urb(urb);
1195         }
1196
1197         usb_free_urb(urb);
1198
1199         return err;
1200 }
1201
1202 static void btusb_diag_complete(struct urb *urb)
1203 {
1204         struct hci_dev *hdev = urb->context;
1205         struct btusb_data *data = hci_get_drvdata(hdev);
1206         int err;
1207
1208         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1209                urb->actual_length);
1210
1211         if (urb->status == 0) {
1212                 struct sk_buff *skb;
1213
1214                 skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC);
1215                 if (skb) {
1216                         skb_put_data(skb, urb->transfer_buffer,
1217                                      urb->actual_length);
1218                         hci_recv_diag(hdev, skb);
1219                 }
1220         } else if (urb->status == -ENOENT) {
1221                 /* Avoid suspend failed when usb_kill_urb */
1222                 return;
1223         }
1224
1225         if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags))
1226                 return;
1227
1228         usb_anchor_urb(urb, &data->diag_anchor);
1229         usb_mark_last_busy(data->udev);
1230
1231         err = usb_submit_urb(urb, GFP_ATOMIC);
1232         if (err < 0) {
1233                 /* -EPERM: urb is being killed;
1234                  * -ENODEV: device got disconnected
1235                  */
1236                 if (err != -EPERM && err != -ENODEV)
1237                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1238                                    urb, -err);
1239                 usb_unanchor_urb(urb);
1240         }
1241 }
1242
1243 static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags)
1244 {
1245         struct btusb_data *data = hci_get_drvdata(hdev);
1246         struct urb *urb;
1247         unsigned char *buf;
1248         unsigned int pipe;
1249         int err, size = HCI_MAX_FRAME_SIZE;
1250
1251         BT_DBG("%s", hdev->name);
1252
1253         if (!data->diag_rx_ep)
1254                 return -ENODEV;
1255
1256         urb = usb_alloc_urb(0, mem_flags);
1257         if (!urb)
1258                 return -ENOMEM;
1259
1260         buf = kmalloc(size, mem_flags);
1261         if (!buf) {
1262                 usb_free_urb(urb);
1263                 return -ENOMEM;
1264         }
1265
1266         pipe = usb_rcvbulkpipe(data->udev, data->diag_rx_ep->bEndpointAddress);
1267
1268         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
1269                           btusb_diag_complete, hdev);
1270
1271         urb->transfer_flags |= URB_FREE_BUFFER;
1272
1273         usb_mark_last_busy(data->udev);
1274         usb_anchor_urb(urb, &data->diag_anchor);
1275
1276         err = usb_submit_urb(urb, mem_flags);
1277         if (err < 0) {
1278                 if (err != -EPERM && err != -ENODEV)
1279                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1280                                    urb, -err);
1281                 usb_unanchor_urb(urb);
1282         }
1283
1284         usb_free_urb(urb);
1285
1286         return err;
1287 }
1288
1289 static void btusb_tx_complete(struct urb *urb)
1290 {
1291         struct sk_buff *skb = urb->context;
1292         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1293         struct btusb_data *data = hci_get_drvdata(hdev);
1294         unsigned long flags;
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         spin_lock_irqsave(&data->txlock, flags);
1309         data->tx_in_flight--;
1310         spin_unlock_irqrestore(&data->txlock, flags);
1311
1312         kfree(urb->setup_packet);
1313
1314         kfree_skb(skb);
1315 }
1316
1317 static void btusb_isoc_tx_complete(struct urb *urb)
1318 {
1319         struct sk_buff *skb = urb->context;
1320         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1321
1322         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1323                urb->actual_length);
1324
1325         if (!test_bit(HCI_RUNNING, &hdev->flags))
1326                 goto done;
1327
1328         if (!urb->status)
1329                 hdev->stat.byte_tx += urb->transfer_buffer_length;
1330         else
1331                 hdev->stat.err_tx++;
1332
1333 done:
1334         kfree(urb->setup_packet);
1335
1336         kfree_skb(skb);
1337 }
1338
1339 static int btusb_open(struct hci_dev *hdev)
1340 {
1341         struct btusb_data *data = hci_get_drvdata(hdev);
1342         int err;
1343
1344         BT_DBG("%s", hdev->name);
1345
1346         err = usb_autopm_get_interface(data->intf);
1347         if (err < 0)
1348                 return err;
1349
1350         /* Patching USB firmware files prior to starting any URBs of HCI path
1351          * It is more safe to use USB bulk channel for downloading USB patch
1352          */
1353         if (data->setup_on_usb) {
1354                 err = data->setup_on_usb(hdev);
1355                 if (err < 0)
1356                         goto setup_fail;
1357         }
1358
1359         data->intf->needs_remote_wakeup = 1;
1360
1361         /* Disable device remote wakeup when host is suspended
1362          * For Realtek chips, global suspend without
1363          * SET_FEATURE (DEVICE_REMOTE_WAKEUP) can save more power in device.
1364          */
1365         if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags))
1366                 device_wakeup_disable(&data->udev->dev);
1367
1368         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
1369                 goto done;
1370
1371         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
1372         if (err < 0)
1373                 goto failed;
1374
1375         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1376         if (err < 0) {
1377                 usb_kill_anchored_urbs(&data->intr_anchor);
1378                 goto failed;
1379         }
1380
1381         set_bit(BTUSB_BULK_RUNNING, &data->flags);
1382         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1383
1384         if (data->diag) {
1385                 if (!btusb_submit_diag_urb(hdev, GFP_KERNEL))
1386                         set_bit(BTUSB_DIAG_RUNNING, &data->flags);
1387         }
1388
1389 done:
1390         usb_autopm_put_interface(data->intf);
1391         return 0;
1392
1393 failed:
1394         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1395 setup_fail:
1396         usb_autopm_put_interface(data->intf);
1397         return err;
1398 }
1399
1400 static void btusb_stop_traffic(struct btusb_data *data)
1401 {
1402         usb_kill_anchored_urbs(&data->intr_anchor);
1403         usb_kill_anchored_urbs(&data->bulk_anchor);
1404         usb_kill_anchored_urbs(&data->isoc_anchor);
1405         usb_kill_anchored_urbs(&data->diag_anchor);
1406         usb_kill_anchored_urbs(&data->ctrl_anchor);
1407 }
1408
1409 static int btusb_close(struct hci_dev *hdev)
1410 {
1411         struct btusb_data *data = hci_get_drvdata(hdev);
1412         int err;
1413
1414         BT_DBG("%s", hdev->name);
1415
1416         cancel_work_sync(&data->work);
1417         cancel_work_sync(&data->waker);
1418
1419         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1420         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1421         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1422         clear_bit(BTUSB_DIAG_RUNNING, &data->flags);
1423
1424         btusb_stop_traffic(data);
1425         btusb_free_frags(data);
1426
1427         err = usb_autopm_get_interface(data->intf);
1428         if (err < 0)
1429                 goto failed;
1430
1431         data->intf->needs_remote_wakeup = 0;
1432
1433         /* Enable remote wake up for auto-suspend */
1434         if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags))
1435                 data->intf->needs_remote_wakeup = 1;
1436
1437         usb_autopm_put_interface(data->intf);
1438
1439 failed:
1440         usb_scuttle_anchored_urbs(&data->deferred);
1441         return 0;
1442 }
1443
1444 static int btusb_flush(struct hci_dev *hdev)
1445 {
1446         struct btusb_data *data = hci_get_drvdata(hdev);
1447
1448         BT_DBG("%s", hdev->name);
1449
1450         usb_kill_anchored_urbs(&data->tx_anchor);
1451         btusb_free_frags(data);
1452
1453         return 0;
1454 }
1455
1456 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
1457 {
1458         struct btusb_data *data = hci_get_drvdata(hdev);
1459         struct usb_ctrlrequest *dr;
1460         struct urb *urb;
1461         unsigned int pipe;
1462
1463         urb = usb_alloc_urb(0, GFP_KERNEL);
1464         if (!urb)
1465                 return ERR_PTR(-ENOMEM);
1466
1467         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
1468         if (!dr) {
1469                 usb_free_urb(urb);
1470                 return ERR_PTR(-ENOMEM);
1471         }
1472
1473         dr->bRequestType = data->cmdreq_type;
1474         dr->bRequest     = data->cmdreq;
1475         dr->wIndex       = 0;
1476         dr->wValue       = 0;
1477         dr->wLength      = __cpu_to_le16(skb->len);
1478
1479         pipe = usb_sndctrlpipe(data->udev, 0x00);
1480
1481         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
1482                              skb->data, skb->len, btusb_tx_complete, skb);
1483
1484         skb->dev = (void *)hdev;
1485
1486         return urb;
1487 }
1488
1489 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
1490 {
1491         struct btusb_data *data = hci_get_drvdata(hdev);
1492         struct urb *urb;
1493         unsigned int pipe;
1494
1495         if (!data->bulk_tx_ep)
1496                 return ERR_PTR(-ENODEV);
1497
1498         urb = usb_alloc_urb(0, GFP_KERNEL);
1499         if (!urb)
1500                 return ERR_PTR(-ENOMEM);
1501
1502         pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1503
1504         usb_fill_bulk_urb(urb, data->udev, pipe,
1505                           skb->data, skb->len, btusb_tx_complete, skb);
1506
1507         skb->dev = (void *)hdev;
1508
1509         return urb;
1510 }
1511
1512 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1513 {
1514         struct btusb_data *data = hci_get_drvdata(hdev);
1515         struct urb *urb;
1516         unsigned int pipe;
1517
1518         if (!data->isoc_tx_ep)
1519                 return ERR_PTR(-ENODEV);
1520
1521         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1522         if (!urb)
1523                 return ERR_PTR(-ENOMEM);
1524
1525         pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1526
1527         usb_fill_int_urb(urb, data->udev, pipe,
1528                          skb->data, skb->len, btusb_isoc_tx_complete,
1529                          skb, data->isoc_tx_ep->bInterval);
1530
1531         urb->transfer_flags  = URB_ISO_ASAP;
1532
1533         if (data->isoc_altsetting == 6)
1534                 __fill_isoc_descriptor_msbc(urb, skb->len,
1535                                             le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize),
1536                                             data);
1537         else
1538                 __fill_isoc_descriptor(urb, skb->len,
1539                                        le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1540         skb->dev = (void *)hdev;
1541
1542         return urb;
1543 }
1544
1545 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1546 {
1547         struct btusb_data *data = hci_get_drvdata(hdev);
1548         int err;
1549
1550         usb_anchor_urb(urb, &data->tx_anchor);
1551
1552         err = usb_submit_urb(urb, GFP_KERNEL);
1553         if (err < 0) {
1554                 if (err != -EPERM && err != -ENODEV)
1555                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1556                                    urb, -err);
1557                 kfree(urb->setup_packet);
1558                 usb_unanchor_urb(urb);
1559         } else {
1560                 usb_mark_last_busy(data->udev);
1561         }
1562
1563         usb_free_urb(urb);
1564         return err;
1565 }
1566
1567 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1568 {
1569         struct btusb_data *data = hci_get_drvdata(hdev);
1570         unsigned long flags;
1571         bool suspending;
1572
1573         spin_lock_irqsave(&data->txlock, flags);
1574         suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1575         if (!suspending)
1576                 data->tx_in_flight++;
1577         spin_unlock_irqrestore(&data->txlock, flags);
1578
1579         if (!suspending)
1580                 return submit_tx_urb(hdev, urb);
1581
1582         usb_anchor_urb(urb, &data->deferred);
1583         schedule_work(&data->waker);
1584
1585         usb_free_urb(urb);
1586         return 0;
1587 }
1588
1589 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1590 {
1591         struct urb *urb;
1592
1593         BT_DBG("%s", hdev->name);
1594
1595         switch (hci_skb_pkt_type(skb)) {
1596         case HCI_COMMAND_PKT:
1597                 urb = alloc_ctrl_urb(hdev, skb);
1598                 if (IS_ERR(urb))
1599                         return PTR_ERR(urb);
1600
1601                 hdev->stat.cmd_tx++;
1602                 return submit_or_queue_tx_urb(hdev, urb);
1603
1604         case HCI_ACLDATA_PKT:
1605                 urb = alloc_bulk_urb(hdev, skb);
1606                 if (IS_ERR(urb))
1607                         return PTR_ERR(urb);
1608
1609                 hdev->stat.acl_tx++;
1610                 return submit_or_queue_tx_urb(hdev, urb);
1611
1612         case HCI_SCODATA_PKT:
1613                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1614                         return -ENODEV;
1615
1616                 urb = alloc_isoc_urb(hdev, skb);
1617                 if (IS_ERR(urb))
1618                         return PTR_ERR(urb);
1619
1620                 hdev->stat.sco_tx++;
1621                 return submit_tx_urb(hdev, urb);
1622         }
1623
1624         return -EILSEQ;
1625 }
1626
1627 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1628 {
1629         struct btusb_data *data = hci_get_drvdata(hdev);
1630
1631         BT_DBG("%s evt %d", hdev->name, evt);
1632
1633         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1634                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1635                 data->air_mode = evt;
1636                 schedule_work(&data->work);
1637         }
1638 }
1639
1640 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1641 {
1642         struct btusb_data *data = hci_get_drvdata(hdev);
1643         struct usb_interface *intf = data->isoc;
1644         struct usb_endpoint_descriptor *ep_desc;
1645         int i, err;
1646
1647         if (!data->isoc)
1648                 return -ENODEV;
1649
1650         err = usb_set_interface(data->udev, data->isoc_ifnum, altsetting);
1651         if (err < 0) {
1652                 bt_dev_err(hdev, "setting interface failed (%d)", -err);
1653                 return err;
1654         }
1655
1656         data->isoc_altsetting = altsetting;
1657
1658         data->isoc_tx_ep = NULL;
1659         data->isoc_rx_ep = NULL;
1660
1661         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1662                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1663
1664                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1665                         data->isoc_tx_ep = ep_desc;
1666                         continue;
1667                 }
1668
1669                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1670                         data->isoc_rx_ep = ep_desc;
1671                         continue;
1672                 }
1673         }
1674
1675         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1676                 bt_dev_err(hdev, "invalid SCO descriptors");
1677                 return -ENODEV;
1678         }
1679
1680         return 0;
1681 }
1682
1683 static int btusb_switch_alt_setting(struct hci_dev *hdev, int new_alts)
1684 {
1685         struct btusb_data *data = hci_get_drvdata(hdev);
1686         int err;
1687
1688         if (data->isoc_altsetting != new_alts) {
1689                 unsigned long flags;
1690
1691                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1692                 usb_kill_anchored_urbs(&data->isoc_anchor);
1693
1694                 /* When isochronous alternate setting needs to be
1695                  * changed, because SCO connection has been added
1696                  * or removed, a packet fragment may be left in the
1697                  * reassembling state. This could lead to wrongly
1698                  * assembled fragments.
1699                  *
1700                  * Clear outstanding fragment when selecting a new
1701                  * alternate setting.
1702                  */
1703                 spin_lock_irqsave(&data->rxlock, flags);
1704                 dev_kfree_skb_irq(data->sco_skb);
1705                 data->sco_skb = NULL;
1706                 spin_unlock_irqrestore(&data->rxlock, flags);
1707
1708                 err = __set_isoc_interface(hdev, new_alts);
1709                 if (err < 0)
1710                         return err;
1711         }
1712
1713         if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1714                 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1715                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1716                 else
1717                         btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1718         }
1719
1720         return 0;
1721 }
1722
1723 static struct usb_host_interface *btusb_find_altsetting(struct btusb_data *data,
1724                                                         int alt)
1725 {
1726         struct usb_interface *intf = data->isoc;
1727         int i;
1728
1729         BT_DBG("Looking for Alt no :%d", alt);
1730
1731         if (!intf)
1732                 return NULL;
1733
1734         for (i = 0; i < intf->num_altsetting; i++) {
1735                 if (intf->altsetting[i].desc.bAlternateSetting == alt)
1736                         return &intf->altsetting[i];
1737         }
1738
1739         return NULL;
1740 }
1741
1742 static void btusb_work(struct work_struct *work)
1743 {
1744         struct btusb_data *data = container_of(work, struct btusb_data, work);
1745         struct hci_dev *hdev = data->hdev;
1746         int new_alts = 0;
1747         int err;
1748
1749         if (data->sco_num > 0) {
1750                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1751                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1752                         if (err < 0) {
1753                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1754                                 usb_kill_anchored_urbs(&data->isoc_anchor);
1755                                 return;
1756                         }
1757
1758                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1759                 }
1760
1761                 if (data->air_mode == HCI_NOTIFY_ENABLE_SCO_CVSD) {
1762                         if (hdev->voice_setting & 0x0020) {
1763                                 static const int alts[3] = { 2, 4, 5 };
1764
1765                                 new_alts = alts[data->sco_num - 1];
1766                         } else {
1767                                 new_alts = data->sco_num;
1768                         }
1769                 } else if (data->air_mode == HCI_NOTIFY_ENABLE_SCO_TRANSP) {
1770                         /* Bluetooth USB spec recommends alt 6 (63 bytes), but
1771                          * many adapters do not support it.  Alt 1 appears to
1772                          * work for all adapters that do not have alt 6, and
1773                          * which work with WBS at all.  Some devices prefer
1774                          * alt 3 (HCI payload >= 60 Bytes let air packet
1775                          * data satisfy 60 bytes), requiring
1776                          * MTU >= 3 (packets) * 25 (size) - 3 (headers) = 72
1777                          * see also Core spec 5, vol 4, B 2.1.1 & Table 2.1.
1778                          */
1779                         if (btusb_find_altsetting(data, 6))
1780                                 new_alts = 6;
1781                         else if (btusb_find_altsetting(data, 3) &&
1782                                  hdev->sco_mtu >= 72 &&
1783                                  test_bit(BTUSB_USE_ALT3_FOR_WBS, &data->flags))
1784                                 new_alts = 3;
1785                         else
1786                                 new_alts = 1;
1787                 }
1788
1789                 if (btusb_switch_alt_setting(hdev, new_alts) < 0)
1790                         bt_dev_err(hdev, "set USB alt:(%d) failed!", new_alts);
1791         } else {
1792                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1793                 usb_kill_anchored_urbs(&data->isoc_anchor);
1794
1795                 __set_isoc_interface(hdev, 0);
1796                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1797                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1798         }
1799 }
1800
1801 static void btusb_waker(struct work_struct *work)
1802 {
1803         struct btusb_data *data = container_of(work, struct btusb_data, waker);
1804         int err;
1805
1806         err = usb_autopm_get_interface(data->intf);
1807         if (err < 0)
1808                 return;
1809
1810         usb_autopm_put_interface(data->intf);
1811 }
1812
1813 static int btusb_setup_bcm92035(struct hci_dev *hdev)
1814 {
1815         struct sk_buff *skb;
1816         u8 val = 0x00;
1817
1818         BT_DBG("%s", hdev->name);
1819
1820         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1821         if (IS_ERR(skb))
1822                 bt_dev_err(hdev, "BCM92035 command failed (%ld)", PTR_ERR(skb));
1823         else
1824                 kfree_skb(skb);
1825
1826         return 0;
1827 }
1828
1829 static int btusb_setup_csr(struct hci_dev *hdev)
1830 {
1831         struct btusb_data *data = hci_get_drvdata(hdev);
1832         u16 bcdDevice = le16_to_cpu(data->udev->descriptor.bcdDevice);
1833         struct hci_rp_read_local_version *rp;
1834         struct sk_buff *skb;
1835         bool is_fake = false;
1836
1837         BT_DBG("%s", hdev->name);
1838
1839         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1840                              HCI_INIT_TIMEOUT);
1841         if (IS_ERR(skb)) {
1842                 int err = PTR_ERR(skb);
1843                 bt_dev_err(hdev, "CSR: Local version failed (%d)", err);
1844                 return err;
1845         }
1846
1847         if (skb->len != sizeof(struct hci_rp_read_local_version)) {
1848                 bt_dev_err(hdev, "CSR: Local version length mismatch");
1849                 kfree_skb(skb);
1850                 return -EIO;
1851         }
1852
1853         rp = (struct hci_rp_read_local_version *)skb->data;
1854
1855         bt_dev_info(hdev, "CSR: Setting up dongle with HCI ver=%u rev=%04x; LMP ver=%u subver=%04x; manufacturer=%u",
1856                 le16_to_cpu(rp->hci_ver), le16_to_cpu(rp->hci_rev),
1857                 le16_to_cpu(rp->lmp_ver), le16_to_cpu(rp->lmp_subver),
1858                 le16_to_cpu(rp->manufacturer));
1859
1860         /* Detect a wide host of Chinese controllers that aren't CSR.
1861          *
1862          * Known fake bcdDevices: 0x0100, 0x0134, 0x1915, 0x2520, 0x7558, 0x8891
1863          *
1864          * The main thing they have in common is that these are really popular low-cost
1865          * options that support newer Bluetooth versions but rely on heavy VID/PID
1866          * squatting of this poor old Bluetooth 1.1 device. Even sold as such.
1867          *
1868          * We detect actual CSR devices by checking that the HCI manufacturer code
1869          * is Cambridge Silicon Radio (10) and ensuring that LMP sub-version and
1870          * HCI rev values always match. As they both store the firmware number.
1871          */
1872         if (le16_to_cpu(rp->manufacturer) != 10 ||
1873             le16_to_cpu(rp->hci_rev) != le16_to_cpu(rp->lmp_subver))
1874                 is_fake = true;
1875
1876         /* Known legit CSR firmware build numbers and their supported BT versions:
1877          * - 1.1 (0x1) -> 0x0073, 0x020d, 0x033c, 0x034e
1878          * - 1.2 (0x2) ->                 0x04d9, 0x0529
1879          * - 2.0 (0x3) ->         0x07a6, 0x07ad, 0x0c5c
1880          * - 2.1 (0x4) ->         0x149c, 0x1735, 0x1899 (0x1899 is a BlueCore4-External)
1881          * - 4.0 (0x6) ->         0x1d86, 0x2031, 0x22bb
1882          *
1883          * e.g. Real CSR dongles with LMP subversion 0x73 are old enough that
1884          *      support BT 1.1 only; so it's a dead giveaway when some
1885          *      third-party BT 4.0 dongle reuses it.
1886          */
1887         else if (le16_to_cpu(rp->lmp_subver) <= 0x034e &&
1888                  le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_1_1)
1889                 is_fake = true;
1890
1891         else if (le16_to_cpu(rp->lmp_subver) <= 0x0529 &&
1892                  le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_1_2)
1893                 is_fake = true;
1894
1895         else if (le16_to_cpu(rp->lmp_subver) <= 0x0c5c &&
1896                  le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_2_0)
1897                 is_fake = true;
1898
1899         else if (le16_to_cpu(rp->lmp_subver) <= 0x1899 &&
1900                  le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_2_1)
1901                 is_fake = true;
1902
1903         else if (le16_to_cpu(rp->lmp_subver) <= 0x22bb &&
1904                  le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_4_0)
1905                 is_fake = true;
1906
1907         /* Other clones which beat all the above checks */
1908         else if (bcdDevice == 0x0134 &&
1909                  le16_to_cpu(rp->lmp_subver) == 0x0c5c &&
1910                  le16_to_cpu(rp->hci_ver) == BLUETOOTH_VER_2_0)
1911                 is_fake = true;
1912
1913         if (is_fake) {
1914                 bt_dev_warn(hdev, "CSR: Unbranded CSR clone detected; adding workarounds...");
1915
1916                 /* Generally these clones have big discrepancies between
1917                  * advertised features and what's actually supported.
1918                  * Probably will need to be expanded in the future;
1919                  * without these the controller will lock up.
1920                  */
1921                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
1922                 set_bit(HCI_QUIRK_BROKEN_ERR_DATA_REPORTING, &hdev->quirks);
1923
1924                 /* Clear the reset quirk since this is not an actual
1925                  * early Bluetooth 1.1 device from CSR.
1926                  */
1927                 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1928                 clear_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
1929         }
1930
1931         kfree_skb(skb);
1932
1933         return 0;
1934 }
1935
1936 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1937                                                        struct intel_version *ver)
1938 {
1939         const struct firmware *fw;
1940         char fwname[64];
1941         int ret;
1942
1943         snprintf(fwname, sizeof(fwname),
1944                  "/*(DEBLOBBED)*/",
1945                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
1946                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1947                  ver->fw_build_ww, ver->fw_build_yy);
1948
1949         ret = reject_firmware(&fw, fwname, &hdev->dev);
1950         if (ret < 0) {
1951                 if (ret == -EINVAL) {
1952                         bt_dev_err(hdev, "Intel firmware file request failed (%d)",
1953                                    ret);
1954                         return NULL;
1955                 }
1956
1957                 bt_dev_err(hdev, "failed to open Intel firmware file: %s (%d)",
1958                            fwname, ret);
1959
1960                 /* If the correct firmware patch file is not found, use the
1961                  * default firmware patch file instead
1962                  */
1963                 snprintf(fwname, sizeof(fwname), "/*(DEBLOBBED)*/",
1964                          ver->hw_platform, ver->hw_variant);
1965                 if (reject_firmware(&fw, fwname, &hdev->dev) < 0) {
1966                         bt_dev_err(hdev, "failed to open default fw file: %s",
1967                                    fwname);
1968                         return NULL;
1969                 }
1970         }
1971
1972         bt_dev_info(hdev, "Intel Bluetooth firmware file: %s", fwname);
1973
1974         return fw;
1975 }
1976
1977 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1978                                       const struct firmware *fw,
1979                                       const u8 **fw_ptr, int *disable_patch)
1980 {
1981         struct sk_buff *skb;
1982         struct hci_command_hdr *cmd;
1983         const u8 *cmd_param;
1984         struct hci_event_hdr *evt = NULL;
1985         const u8 *evt_param = NULL;
1986         int remain = fw->size - (*fw_ptr - fw->data);
1987
1988         /* The first byte indicates the types of the patch command or event.
1989          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1990          * in the current firmware buffer doesn't start with 0x01 or
1991          * the size of remain buffer is smaller than HCI command header,
1992          * the firmware file is corrupted and it should stop the patching
1993          * process.
1994          */
1995         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1996                 bt_dev_err(hdev, "Intel fw corrupted: invalid cmd read");
1997                 return -EINVAL;
1998         }
1999         (*fw_ptr)++;
2000         remain--;
2001
2002         cmd = (struct hci_command_hdr *)(*fw_ptr);
2003         *fw_ptr += sizeof(*cmd);
2004         remain -= sizeof(*cmd);
2005
2006         /* Ensure that the remain firmware data is long enough than the length
2007          * of command parameter. If not, the firmware file is corrupted.
2008          */
2009         if (remain < cmd->plen) {
2010                 bt_dev_err(hdev, "Intel fw corrupted: invalid cmd len");
2011                 return -EFAULT;
2012         }
2013
2014         /* If there is a command that loads a patch in the firmware
2015          * file, then enable the patch upon success, otherwise just
2016          * disable the manufacturer mode, for example patch activation
2017          * is not required when the default firmware patch file is used
2018          * because there are no patch data to load.
2019          */
2020         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
2021                 *disable_patch = 0;
2022
2023         cmd_param = *fw_ptr;
2024         *fw_ptr += cmd->plen;
2025         remain -= cmd->plen;
2026
2027         /* This reads the expected events when the above command is sent to the
2028          * device. Some vendor commands expects more than one events, for
2029          * example command status event followed by vendor specific event.
2030          * For this case, it only keeps the last expected event. so the command
2031          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
2032          * last expected event.
2033          */
2034         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
2035                 (*fw_ptr)++;
2036                 remain--;
2037
2038                 evt = (struct hci_event_hdr *)(*fw_ptr);
2039                 *fw_ptr += sizeof(*evt);
2040                 remain -= sizeof(*evt);
2041
2042                 if (remain < evt->plen) {
2043                         bt_dev_err(hdev, "Intel fw corrupted: invalid evt len");
2044                         return -EFAULT;
2045                 }
2046
2047                 evt_param = *fw_ptr;
2048                 *fw_ptr += evt->plen;
2049                 remain -= evt->plen;
2050         }
2051
2052         /* Every HCI commands in the firmware file has its correspond event.
2053          * If event is not found or remain is smaller than zero, the firmware
2054          * file is corrupted.
2055          */
2056         if (!evt || !evt_param || remain < 0) {
2057                 bt_dev_err(hdev, "Intel fw corrupted: invalid evt read");
2058                 return -EFAULT;
2059         }
2060
2061         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
2062                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
2063         if (IS_ERR(skb)) {
2064                 bt_dev_err(hdev, "sending Intel patch command (0x%4.4x) failed (%ld)",
2065                            cmd->opcode, PTR_ERR(skb));
2066                 return PTR_ERR(skb);
2067         }
2068
2069         /* It ensures that the returned event matches the event data read from
2070          * the firmware file. At fist, it checks the length and then
2071          * the contents of the event.
2072          */
2073         if (skb->len != evt->plen) {
2074                 bt_dev_err(hdev, "mismatch event length (opcode 0x%4.4x)",
2075                            le16_to_cpu(cmd->opcode));
2076                 kfree_skb(skb);
2077                 return -EFAULT;
2078         }
2079
2080         if (memcmp(skb->data, evt_param, evt->plen)) {
2081                 bt_dev_err(hdev, "mismatch event parameter (opcode 0x%4.4x)",
2082                            le16_to_cpu(cmd->opcode));
2083                 kfree_skb(skb);
2084                 return -EFAULT;
2085         }
2086         kfree_skb(skb);
2087
2088         return 0;
2089 }
2090
2091 static int btusb_setup_intel(struct hci_dev *hdev)
2092 {
2093         struct sk_buff *skb;
2094         const struct firmware *fw;
2095         const u8 *fw_ptr;
2096         int disable_patch, err;
2097         struct intel_version ver;
2098
2099         BT_DBG("%s", hdev->name);
2100
2101         /* The controller has a bug with the first HCI command sent to it
2102          * returning number of completed commands as zero. This would stall the
2103          * command processing in the Bluetooth core.
2104          *
2105          * As a workaround, send HCI Reset command first which will reset the
2106          * number of completed commands and allow normal command processing
2107          * from now on.
2108          */
2109         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2110         if (IS_ERR(skb)) {
2111                 bt_dev_err(hdev, "sending initial HCI reset command failed (%ld)",
2112                            PTR_ERR(skb));
2113                 return PTR_ERR(skb);
2114         }
2115         kfree_skb(skb);
2116
2117         /* Read Intel specific controller version first to allow selection of
2118          * which firmware file to load.
2119          *
2120          * The returned information are hardware variant and revision plus
2121          * firmware variant, revision and build number.
2122          */
2123         err = btintel_read_version(hdev, &ver);
2124         if (err)
2125                 return err;
2126
2127         bt_dev_info(hdev, "read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
2128                     ver.hw_platform, ver.hw_variant, ver.hw_revision,
2129                     ver.fw_variant,  ver.fw_revision, ver.fw_build_num,
2130                     ver.fw_build_ww, ver.fw_build_yy, ver.fw_patch_num);
2131
2132         /* fw_patch_num indicates the version of patch the device currently
2133          * have. If there is no patch data in the device, it is always 0x00.
2134          * So, if it is other than 0x00, no need to patch the device again.
2135          */
2136         if (ver.fw_patch_num) {
2137                 bt_dev_info(hdev, "Intel device is already patched. "
2138                             "patch num: %02x", ver.fw_patch_num);
2139                 goto complete;
2140         }
2141
2142         /* Opens the firmware patch file based on the firmware version read
2143          * from the controller. If it fails to open the matching firmware
2144          * patch file, it tries to open the default firmware patch file.
2145          * If no patch file is found, allow the device to operate without
2146          * a patch.
2147          */
2148         fw = btusb_setup_intel_get_fw(hdev, &ver);
2149         if (!fw)
2150                 goto complete;
2151         fw_ptr = fw->data;
2152
2153         /* Enable the manufacturer mode of the controller.
2154          * Only while this mode is enabled, the driver can download the
2155          * firmware patch data and configuration parameters.
2156          */
2157         err = btintel_enter_mfg(hdev);
2158         if (err) {
2159                 release_firmware(fw);
2160                 return err;
2161         }
2162
2163         disable_patch = 1;
2164
2165         /* The firmware data file consists of list of Intel specific HCI
2166          * commands and its expected events. The first byte indicates the
2167          * type of the message, either HCI command or HCI event.
2168          *
2169          * It reads the command and its expected event from the firmware file,
2170          * and send to the controller. Once __hci_cmd_sync_ev() returns,
2171          * the returned event is compared with the event read from the firmware
2172          * file and it will continue until all the messages are downloaded to
2173          * the controller.
2174          *
2175          * Once the firmware patching is completed successfully,
2176          * the manufacturer mode is disabled with reset and activating the
2177          * downloaded patch.
2178          *
2179          * If the firmware patching fails, the manufacturer mode is
2180          * disabled with reset and deactivating the patch.
2181          *
2182          * If the default patch file is used, no reset is done when disabling
2183          * the manufacturer.
2184          */
2185         while (fw->size > fw_ptr - fw->data) {
2186                 int ret;
2187
2188                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
2189                                                  &disable_patch);
2190                 if (ret < 0)
2191                         goto exit_mfg_deactivate;
2192         }
2193
2194         release_firmware(fw);
2195
2196         if (disable_patch)
2197                 goto exit_mfg_disable;
2198
2199         /* Patching completed successfully and disable the manufacturer mode
2200          * with reset and activate the downloaded firmware patches.
2201          */
2202         err = btintel_exit_mfg(hdev, true, true);
2203         if (err)
2204                 return err;
2205
2206         /* Need build number for downloaded fw patches in
2207          * every power-on boot
2208          */
2209        err = btintel_read_version(hdev, &ver);
2210        if (err)
2211                return err;
2212        bt_dev_info(hdev, "Intel BT fw patch 0x%02x completed & activated",
2213                    ver.fw_patch_num);
2214
2215         goto complete;
2216
2217 exit_mfg_disable:
2218         /* Disable the manufacturer mode without reset */
2219         err = btintel_exit_mfg(hdev, false, false);
2220         if (err)
2221                 return err;
2222
2223         bt_dev_info(hdev, "Intel firmware patch completed");
2224
2225         goto complete;
2226
2227 exit_mfg_deactivate:
2228         release_firmware(fw);
2229
2230         /* Patching failed. Disable the manufacturer mode with reset and
2231          * deactivate the downloaded firmware patches.
2232          */
2233         err = btintel_exit_mfg(hdev, true, false);
2234         if (err)
2235                 return err;
2236
2237         bt_dev_info(hdev, "Intel firmware patch completed and deactivated");
2238
2239 complete:
2240         /* Set the event mask for Intel specific vendor events. This enables
2241          * a few extra events that are useful during general operation.
2242          */
2243         btintel_set_event_mask_mfg(hdev, false);
2244
2245         btintel_check_bdaddr(hdev);
2246         return 0;
2247 }
2248
2249 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
2250 {
2251         struct sk_buff *skb;
2252         struct hci_event_hdr *hdr;
2253         struct hci_ev_cmd_complete *evt;
2254
2255         skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_KERNEL);
2256         if (!skb)
2257                 return -ENOMEM;
2258
2259         hdr = skb_put(skb, sizeof(*hdr));
2260         hdr->evt = HCI_EV_CMD_COMPLETE;
2261         hdr->plen = sizeof(*evt) + 1;
2262
2263         evt = skb_put(skb, sizeof(*evt));
2264         evt->ncmd = 0x01;
2265         evt->opcode = cpu_to_le16(opcode);
2266
2267         skb_put_u8(skb, 0x00);
2268
2269         hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
2270
2271         return hci_recv_frame(hdev, skb);
2272 }
2273
2274 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
2275                                  int count)
2276 {
2277         /* When the device is in bootloader mode, then it can send
2278          * events via the bulk endpoint. These events are treated the
2279          * same way as the ones received from the interrupt endpoint.
2280          */
2281         if (test_bit(BTUSB_BOOTLOADER, &data->flags))
2282                 return btusb_recv_intr(data, buffer, count);
2283
2284         return btusb_recv_bulk(data, buffer, count);
2285 }
2286
2287 static void btusb_intel_bootup(struct btusb_data *data, const void *ptr,
2288                                unsigned int len)
2289 {
2290         const struct intel_bootup *evt = ptr;
2291
2292         if (len != sizeof(*evt))
2293                 return;
2294
2295         if (test_and_clear_bit(BTUSB_BOOTING, &data->flags))
2296                 wake_up_bit(&data->flags, BTUSB_BOOTING);
2297 }
2298
2299 static void btusb_intel_secure_send_result(struct btusb_data *data,
2300                                            const void *ptr, unsigned int len)
2301 {
2302         const struct intel_secure_send_result *evt = ptr;
2303
2304         if (len != sizeof(*evt))
2305                 return;
2306
2307         if (evt->result)
2308                 set_bit(BTUSB_FIRMWARE_FAILED, &data->flags);
2309
2310         if (test_and_clear_bit(BTUSB_DOWNLOADING, &data->flags) &&
2311             test_bit(BTUSB_FIRMWARE_LOADED, &data->flags))
2312                 wake_up_bit(&data->flags, BTUSB_DOWNLOADING);
2313 }
2314
2315 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
2316 {
2317         struct btusb_data *data = hci_get_drvdata(hdev);
2318
2319         if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
2320                 struct hci_event_hdr *hdr = (void *)skb->data;
2321
2322                 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
2323                     hdr->plen > 0) {
2324                         const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
2325                         unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
2326
2327                         switch (skb->data[2]) {
2328                         case 0x02:
2329                                 /* When switching to the operational firmware
2330                                  * the device sends a vendor specific event
2331                                  * indicating that the bootup completed.
2332                                  */
2333                                 btusb_intel_bootup(data, ptr, len);
2334                                 break;
2335                         case 0x06:
2336                                 /* When the firmware loading completes the
2337                                  * device sends out a vendor specific event
2338                                  * indicating the result of the firmware
2339                                  * loading.
2340                                  */
2341                                 btusb_intel_secure_send_result(data, ptr, len);
2342                                 break;
2343                         }
2344                 }
2345         }
2346
2347         return hci_recv_frame(hdev, skb);
2348 }
2349
2350 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
2351 {
2352         struct btusb_data *data = hci_get_drvdata(hdev);
2353         struct urb *urb;
2354
2355         BT_DBG("%s", hdev->name);
2356
2357         switch (hci_skb_pkt_type(skb)) {
2358         case HCI_COMMAND_PKT:
2359                 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
2360                         struct hci_command_hdr *cmd = (void *)skb->data;
2361                         __u16 opcode = le16_to_cpu(cmd->opcode);
2362
2363                         /* When in bootloader mode and the command 0xfc09
2364                          * is received, it needs to be send down the
2365                          * bulk endpoint. So allocate a bulk URB instead.
2366                          */
2367                         if (opcode == 0xfc09)
2368                                 urb = alloc_bulk_urb(hdev, skb);
2369                         else
2370                                 urb = alloc_ctrl_urb(hdev, skb);
2371
2372                         /* When the 0xfc01 command is issued to boot into
2373                          * the operational firmware, it will actually not
2374                          * send a command complete event. To keep the flow
2375                          * control working inject that event here.
2376                          */
2377                         if (opcode == 0xfc01)
2378                                 inject_cmd_complete(hdev, opcode);
2379                 } else {
2380                         urb = alloc_ctrl_urb(hdev, skb);
2381                 }
2382                 if (IS_ERR(urb))
2383                         return PTR_ERR(urb);
2384
2385                 hdev->stat.cmd_tx++;
2386                 return submit_or_queue_tx_urb(hdev, urb);
2387
2388         case HCI_ACLDATA_PKT:
2389                 urb = alloc_bulk_urb(hdev, skb);
2390                 if (IS_ERR(urb))
2391                         return PTR_ERR(urb);
2392
2393                 hdev->stat.acl_tx++;
2394                 return submit_or_queue_tx_urb(hdev, urb);
2395
2396         case HCI_SCODATA_PKT:
2397                 if (hci_conn_num(hdev, SCO_LINK) < 1)
2398                         return -ENODEV;
2399
2400                 urb = alloc_isoc_urb(hdev, skb);
2401                 if (IS_ERR(urb))
2402                         return PTR_ERR(urb);
2403
2404                 hdev->stat.sco_tx++;
2405                 return submit_tx_urb(hdev, urb);
2406         }
2407
2408         return -EILSEQ;
2409 }
2410
2411 static bool btusb_setup_intel_new_get_fw_name(struct intel_version *ver,
2412                                              struct intel_boot_params *params,
2413                                              char *fw_name, size_t len,
2414                                              const char *suffix)
2415 {
2416         switch (ver->hw_variant) {
2417         case 0x0b:      /* SfP */
2418         case 0x0c:      /* WsP */
2419                 snprintf(fw_name, len, "intel/ibt-%u-%u.%s",
2420                         le16_to_cpu(ver->hw_variant),
2421                         le16_to_cpu(params->dev_revid),
2422                         suffix);
2423                 break;
2424         case 0x11:      /* JfP */
2425         case 0x12:      /* ThP */
2426         case 0x13:      /* HrP */
2427         case 0x14:      /* CcP */
2428                 snprintf(fw_name, len, "intel/ibt-%u-%u-%u.%s",
2429                         le16_to_cpu(ver->hw_variant),
2430                         le16_to_cpu(ver->hw_revision),
2431                         le16_to_cpu(ver->fw_revision),
2432                         suffix);
2433                 break;
2434         default:
2435                 return false;
2436         }
2437         return true;
2438 }
2439
2440 static int btusb_intel_download_firmware(struct hci_dev *hdev,
2441                                          struct intel_version *ver,
2442                                          struct intel_boot_params *params,
2443                                          u32 *boot_param)
2444 {
2445         const struct firmware *fw;
2446         char fwname[64];
2447         int err;
2448         struct btusb_data *data = hci_get_drvdata(hdev);
2449
2450         if (!ver || !params)
2451                 return -EINVAL;
2452
2453         /* The hardware platform number has a fixed value of 0x37 and
2454          * for now only accept this single value.
2455          */
2456         if (ver->hw_platform != 0x37) {
2457                 bt_dev_err(hdev, "Unsupported Intel hardware platform (%u)",
2458                            ver->hw_platform);
2459                 return -EINVAL;
2460         }
2461
2462         /* Check for supported iBT hardware variants of this firmware
2463          * loading method.
2464          *
2465          * This check has been put in place to ensure correct forward
2466          * compatibility options when newer hardware variants come along.
2467          */
2468         switch (ver->hw_variant) {
2469         case 0x0b:      /* SfP */
2470         case 0x0c:      /* WsP */
2471         case 0x11:      /* JfP */
2472         case 0x12:      /* ThP */
2473         case 0x13:      /* HrP */
2474         case 0x14:      /* CcP */
2475                 break;
2476         default:
2477                 bt_dev_err(hdev, "Unsupported Intel hardware variant (%u)",
2478                            ver->hw_variant);
2479                 return -EINVAL;
2480         }
2481
2482         btintel_version_info(hdev, ver);
2483
2484         /* The firmware variant determines if the device is in bootloader
2485          * mode or is running operational firmware. The value 0x06 identifies
2486          * the bootloader and the value 0x23 identifies the operational
2487          * firmware.
2488          *
2489          * When the operational firmware is already present, then only
2490          * the check for valid Bluetooth device address is needed. This
2491          * determines if the device will be added as configured or
2492          * unconfigured controller.
2493          *
2494          * It is not possible to use the Secure Boot Parameters in this
2495          * case since that command is only available in bootloader mode.
2496          */
2497         if (ver->fw_variant == 0x23) {
2498                 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2499                 btintel_check_bdaddr(hdev);
2500                 return 0;
2501         }
2502
2503         /* If the device is not in bootloader mode, then the only possible
2504          * choice is to return an error and abort the device initialization.
2505          */
2506         if (ver->fw_variant != 0x06) {
2507                 bt_dev_err(hdev, "Unsupported Intel firmware variant (%u)",
2508                            ver->fw_variant);
2509                 return -ENODEV;
2510         }
2511
2512         /* Read the secure boot parameters to identify the operating
2513          * details of the bootloader.
2514          */
2515         err = btintel_read_boot_params(hdev, params);
2516         if (err)
2517                 return err;
2518
2519         /* It is required that every single firmware fragment is acknowledged
2520          * with a command complete event. If the boot parameters indicate
2521          * that this bootloader does not send them, then abort the setup.
2522          */
2523         if (params->limited_cce != 0x00) {
2524                 bt_dev_err(hdev, "Unsupported Intel firmware loading method (%u)",
2525                            params->limited_cce);
2526                 return -EINVAL;
2527         }
2528
2529         /* If the OTP has no valid Bluetooth device address, then there will
2530          * also be no valid address for the operational firmware.
2531          */
2532         if (!bacmp(&params->otp_bdaddr, BDADDR_ANY)) {
2533                 bt_dev_info(hdev, "No device address configured");
2534                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2535         }
2536
2537         /* With this Intel bootloader only the hardware variant and device
2538          * revision information are used to select the right firmware for SfP
2539          * and WsP.
2540          *
2541          * The firmware filename is ibt-<hw_variant>-<dev_revid>.sfi.
2542          *
2543          * Currently the supported hardware variants are:
2544          *   11 (0x0b) for iBT3.0 (LnP/SfP)
2545          *   12 (0x0c) for iBT3.5 (WsP)
2546          *
2547          * For ThP/JfP and for future SKU's, the FW name varies based on HW
2548          * variant, HW revision and FW revision, as these are dependent on CNVi
2549          * and RF Combination.
2550          *
2551          *   17 (0x11) for iBT3.5 (JfP)
2552          *   18 (0x12) for iBT3.5 (ThP)
2553          *
2554          * The firmware file name for these will be
2555          * ibt-<hw_variant>-<hw_revision>-<fw_revision>.sfi.
2556          *
2557          */
2558         err = btusb_setup_intel_new_get_fw_name(ver, params, fwname,
2559                                                 sizeof(fwname), "sfi");
2560         if (!err) {
2561                 bt_dev_err(hdev, "Unsupported Intel firmware naming");
2562                 return -EINVAL;
2563         }
2564
2565         err = reject_firmware(&fw, fwname, &hdev->dev);
2566         if (err < 0) {
2567                 bt_dev_err(hdev, "Failed to load Intel firmware file (%d)", err);
2568                 return err;
2569         }
2570
2571         bt_dev_info(hdev, "Found device firmware: %s", fwname);
2572
2573         if (fw->size < 644) {
2574                 bt_dev_err(hdev, "Invalid size of firmware file (%zu)",
2575                            fw->size);
2576                 err = -EBADF;
2577                 goto done;
2578         }
2579
2580         set_bit(BTUSB_DOWNLOADING, &data->flags);
2581
2582         /* Start firmware downloading and get boot parameter */
2583         err = btintel_download_firmware(hdev, fw, boot_param);
2584         if (err < 0) {
2585                 /* When FW download fails, send Intel Reset to retry
2586                  * FW download.
2587                  */
2588                 btintel_reset_to_bootloader(hdev);
2589                 goto done;
2590         }
2591         set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2592
2593         bt_dev_info(hdev, "Waiting for firmware download to complete");
2594
2595         /* Before switching the device into operational mode and with that
2596          * booting the loaded firmware, wait for the bootloader notification
2597          * that all fragments have been successfully received.
2598          *
2599          * When the event processing receives the notification, then the
2600          * BTUSB_DOWNLOADING flag will be cleared.
2601          *
2602          * The firmware loading should not take longer than 5 seconds
2603          * and thus just timeout if that happens and fail the setup
2604          * of this device.
2605          */
2606         err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
2607                                   TASK_INTERRUPTIBLE,
2608                                   msecs_to_jiffies(5000));
2609         if (err == -EINTR) {
2610                 bt_dev_err(hdev, "Firmware loading interrupted");
2611                 goto done;
2612         }
2613
2614         if (err) {
2615                 bt_dev_err(hdev, "Firmware loading timeout");
2616                 err = -ETIMEDOUT;
2617                 btintel_reset_to_bootloader(hdev);
2618                 goto done;
2619         }
2620
2621         if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) {
2622                 bt_dev_err(hdev, "Firmware loading failed");
2623                 err = -ENOEXEC;
2624                 goto done;
2625         }
2626
2627 done:
2628         release_firmware(fw);
2629         return err;
2630 }
2631
2632 static int btusb_setup_intel_new(struct hci_dev *hdev)
2633 {
2634         struct btusb_data *data = hci_get_drvdata(hdev);
2635         struct intel_version ver;
2636         struct intel_boot_params params;
2637         u32 boot_param;
2638         char ddcname[64];
2639         ktime_t calltime, delta, rettime;
2640         unsigned long long duration;
2641         int err;
2642         struct intel_debug_features features;
2643
2644         BT_DBG("%s", hdev->name);
2645
2646         /* Set the default boot parameter to 0x0 and it is updated to
2647          * SKU specific boot parameter after reading Intel_Write_Boot_Params
2648          * command while downloading the firmware.
2649          */
2650         boot_param = 0x00000000;
2651
2652         calltime = ktime_get();
2653
2654         /* Read the Intel version information to determine if the device
2655          * is in bootloader mode or if it already has operational firmware
2656          * loaded.
2657          */
2658         err = btintel_read_version(hdev, &ver);
2659         if (err) {
2660                 bt_dev_err(hdev, "Intel Read version failed (%d)", err);
2661                 btintel_reset_to_bootloader(hdev);
2662                 return err;
2663         }
2664
2665         err = btusb_intel_download_firmware(hdev, &ver, &params, &boot_param);
2666         if (err)
2667                 return err;
2668
2669         /* controller is already having an operational firmware */
2670         if (ver.fw_variant == 0x23)
2671                 goto finish;
2672
2673         rettime = ktime_get();
2674         delta = ktime_sub(rettime, calltime);
2675         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2676
2677         bt_dev_info(hdev, "Firmware loaded in %llu usecs", duration);
2678
2679         calltime = ktime_get();
2680
2681         set_bit(BTUSB_BOOTING, &data->flags);
2682
2683         err = btintel_send_intel_reset(hdev, boot_param);
2684         if (err) {
2685                 bt_dev_err(hdev, "Intel Soft Reset failed (%d)", err);
2686                 btintel_reset_to_bootloader(hdev);
2687                 return err;
2688         }
2689
2690         /* The bootloader will not indicate when the device is ready. This
2691          * is done by the operational firmware sending bootup notification.
2692          *
2693          * Booting into operational firmware should not take longer than
2694          * 1 second. However if that happens, then just fail the setup
2695          * since something went wrong.
2696          */
2697         bt_dev_info(hdev, "Waiting for device to boot");
2698
2699         err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING,
2700                                   TASK_INTERRUPTIBLE,
2701                                   msecs_to_jiffies(1000));
2702
2703         if (err == -EINTR) {
2704                 bt_dev_err(hdev, "Device boot interrupted");
2705                 return -EINTR;
2706         }
2707
2708         if (err) {
2709                 bt_dev_err(hdev, "Device boot timeout");
2710                 btintel_reset_to_bootloader(hdev);
2711                 return -ETIMEDOUT;
2712         }
2713
2714         rettime = ktime_get();
2715         delta = ktime_sub(rettime, calltime);
2716         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2717
2718         bt_dev_info(hdev, "Device booted in %llu usecs", duration);
2719
2720         clear_bit(BTUSB_BOOTLOADER, &data->flags);
2721
2722         err = btusb_setup_intel_new_get_fw_name(&ver, &params, ddcname,
2723                                                 sizeof(ddcname), "ddc");
2724
2725         if (!err) {
2726                 bt_dev_err(hdev, "Unsupported Intel firmware naming");
2727         } else {
2728                 /* Once the device is running in operational mode, it needs to
2729                  * apply the device configuration (DDC) parameters.
2730                  *
2731                  * The device can work without DDC parameters, so even if it
2732                  * fails to load the file, no need to fail the setup.
2733                  */
2734                 btintel_load_ddc_config(hdev, ddcname);
2735         }
2736
2737         /* Read the Intel supported features and if new exception formats
2738          * supported, need to load the additional DDC config to enable.
2739          */
2740         btintel_read_debug_features(hdev, &features);
2741
2742         /* Set DDC mask for available debug features */
2743         btintel_set_debug_features(hdev, &features);
2744
2745         /* Read the Intel version information after loading the FW  */
2746         err = btintel_read_version(hdev, &ver);
2747         if (err)
2748                 return err;
2749
2750         btintel_version_info(hdev, &ver);
2751
2752 finish:
2753         /* All Intel controllers that support the Microsoft vendor
2754          * extension are using 0xFC1E for VsMsftOpCode.
2755          */
2756         switch (ver.hw_variant) {
2757         case 0x12:      /* ThP */
2758                 hci_set_msft_opcode(hdev, 0xFC1E);
2759                 break;
2760         }
2761
2762         /* Set the event mask for Intel specific vendor events. This enables
2763          * a few extra events that are useful during general operation. It
2764          * does not enable any debugging related events.
2765          *
2766          * The device will function correctly without these events enabled
2767          * and thus no need to fail the setup.
2768          */
2769         btintel_set_event_mask(hdev, false);
2770
2771         return 0;
2772 }
2773
2774 static int btusb_shutdown_intel(struct hci_dev *hdev)
2775 {
2776         struct sk_buff *skb;
2777         long ret;
2778
2779         /* In the shutdown sequence where Bluetooth is turned off followed
2780          * by WiFi being turned off, turning WiFi back on causes issue with
2781          * the RF calibration.
2782          *
2783          * To ensure that any RF activity has been stopped, issue HCI Reset
2784          * command to clear all ongoing activity including advertising,
2785          * scanning etc.
2786          */
2787         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2788         if (IS_ERR(skb)) {
2789                 ret = PTR_ERR(skb);
2790                 bt_dev_err(hdev, "HCI reset during shutdown failed");
2791                 return ret;
2792         }
2793         kfree_skb(skb);
2794
2795         /* Some platforms have an issue with BT LED when the interface is
2796          * down or BT radio is turned off, which takes 5 seconds to BT LED
2797          * goes off. This command turns off the BT LED immediately.
2798          */
2799         skb = __hci_cmd_sync(hdev, 0xfc3f, 0, NULL, HCI_INIT_TIMEOUT);
2800         if (IS_ERR(skb)) {
2801                 ret = PTR_ERR(skb);
2802                 bt_dev_err(hdev, "turning off Intel device LED failed");
2803                 return ret;
2804         }
2805         kfree_skb(skb);
2806
2807         return 0;
2808 }
2809
2810 static int btusb_shutdown_intel_new(struct hci_dev *hdev)
2811 {
2812         struct sk_buff *skb;
2813
2814         /* Send HCI Reset to the controller to stop any BT activity which
2815          * were triggered. This will help to save power and maintain the
2816          * sync b/w Host and controller
2817          */
2818         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2819         if (IS_ERR(skb)) {
2820                 bt_dev_err(hdev, "HCI reset during shutdown failed");
2821                 return PTR_ERR(skb);
2822         }
2823         kfree_skb(skb);
2824
2825         return 0;
2826 }
2827
2828 #define FIRMWARE_MT7663         "/*(DEBLOBBED)*/"
2829 #define FIRMWARE_MT7668         "/*(DEBLOBBED)*/"
2830
2831 #define HCI_WMT_MAX_EVENT_SIZE          64
2832
2833 enum {
2834         BTMTK_WMT_PATCH_DWNLD = 0x1,
2835         BTMTK_WMT_FUNC_CTRL = 0x6,
2836         BTMTK_WMT_RST = 0x7,
2837         BTMTK_WMT_SEMAPHORE = 0x17,
2838 };
2839
2840 enum {
2841         BTMTK_WMT_INVALID,
2842         BTMTK_WMT_PATCH_UNDONE,
2843         BTMTK_WMT_PATCH_PROGRESS,
2844         BTMTK_WMT_PATCH_DONE,
2845         BTMTK_WMT_ON_UNDONE,
2846         BTMTK_WMT_ON_DONE,
2847         BTMTK_WMT_ON_PROGRESS,
2848 };
2849
2850 struct btmtk_wmt_hdr {
2851         u8      dir;
2852         u8      op;
2853         __le16  dlen;
2854         u8      flag;
2855 } __packed;
2856
2857 struct btmtk_hci_wmt_cmd {
2858         struct btmtk_wmt_hdr hdr;
2859         u8 data[];
2860 } __packed;
2861
2862 struct btmtk_hci_wmt_evt {
2863         struct hci_event_hdr hhdr;
2864         struct btmtk_wmt_hdr whdr;
2865 } __packed;
2866
2867 struct btmtk_hci_wmt_evt_funcc {
2868         struct btmtk_hci_wmt_evt hwhdr;
2869         __be16 status;
2870 } __packed;
2871
2872 struct btmtk_tci_sleep {
2873         u8 mode;
2874         __le16 duration;
2875         __le16 host_duration;
2876         u8 host_wakeup_pin;
2877         u8 time_compensation;
2878 } __packed;
2879
2880 struct btmtk_hci_wmt_params {
2881         u8 op;
2882         u8 flag;
2883         u16 dlen;
2884         const void *data;
2885         u32 *status;
2886 };
2887
2888 static void btusb_mtk_wmt_recv(struct urb *urb)
2889 {
2890         struct hci_dev *hdev = urb->context;
2891         struct btusb_data *data = hci_get_drvdata(hdev);
2892         struct hci_event_hdr *hdr;
2893         struct sk_buff *skb;
2894         int err;
2895
2896         if (urb->status == 0 && urb->actual_length > 0) {
2897                 hdev->stat.byte_rx += urb->actual_length;
2898
2899                 /* WMT event shouldn't be fragmented and the size should be
2900                  * less than HCI_WMT_MAX_EVENT_SIZE.
2901                  */
2902                 skb = bt_skb_alloc(HCI_WMT_MAX_EVENT_SIZE, GFP_ATOMIC);
2903                 if (!skb) {
2904                         hdev->stat.err_rx++;
2905                         kfree(urb->setup_packet);
2906                         return;
2907                 }
2908
2909                 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
2910                 skb_put_data(skb, urb->transfer_buffer, urb->actual_length);
2911
2912                 hdr = (void *)skb->data;
2913                 /* Fix up the vendor event id with 0xff for vendor specific
2914                  * instead of 0xe4 so that event send via monitoring socket can
2915                  * be parsed properly.
2916                  */
2917                 hdr->evt = 0xff;
2918
2919                 /* When someone waits for the WMT event, the skb is being cloned
2920                  * and being processed the events from there then.
2921                  */
2922                 if (test_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags)) {
2923                         data->evt_skb = skb_clone(skb, GFP_ATOMIC);
2924                         if (!data->evt_skb) {
2925                                 kfree_skb(skb);
2926                                 kfree(urb->setup_packet);
2927                                 return;
2928                         }
2929                 }
2930
2931                 err = hci_recv_frame(hdev, skb);
2932                 if (err < 0) {
2933                         kfree_skb(data->evt_skb);
2934                         data->evt_skb = NULL;
2935                         kfree(urb->setup_packet);
2936                         return;
2937                 }
2938
2939                 if (test_and_clear_bit(BTUSB_TX_WAIT_VND_EVT,
2940                                        &data->flags)) {
2941                         /* Barrier to sync with other CPUs */
2942                         smp_mb__after_atomic();
2943                         wake_up_bit(&data->flags,
2944                                     BTUSB_TX_WAIT_VND_EVT);
2945                 }
2946                 kfree(urb->setup_packet);
2947                 return;
2948         } else if (urb->status == -ENOENT) {
2949                 /* Avoid suspend failed when usb_kill_urb */
2950                 return;
2951         }
2952
2953         usb_mark_last_busy(data->udev);
2954
2955         /* The URB complete handler is still called with urb->actual_length = 0
2956          * when the event is not available, so we should keep re-submitting
2957          * URB until WMT event returns, Also, It's necessary to wait some time
2958          * between the two consecutive control URBs to relax the target device
2959          * to generate the event. Otherwise, the WMT event cannot return from
2960          * the device successfully.
2961          */
2962         udelay(500);
2963
2964         usb_anchor_urb(urb, &data->ctrl_anchor);
2965         err = usb_submit_urb(urb, GFP_ATOMIC);
2966         if (err < 0) {
2967                 kfree(urb->setup_packet);
2968                 /* -EPERM: urb is being killed;
2969                  * -ENODEV: device got disconnected
2970                  */
2971                 if (err != -EPERM && err != -ENODEV)
2972                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
2973                                    urb, -err);
2974                 usb_unanchor_urb(urb);
2975         }
2976 }
2977
2978 static int btusb_mtk_submit_wmt_recv_urb(struct hci_dev *hdev)
2979 {
2980         struct btusb_data *data = hci_get_drvdata(hdev);
2981         struct usb_ctrlrequest *dr;
2982         unsigned char *buf;
2983         int err, size = 64;
2984         unsigned int pipe;
2985         struct urb *urb;
2986
2987         urb = usb_alloc_urb(0, GFP_KERNEL);
2988         if (!urb)
2989                 return -ENOMEM;
2990
2991         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
2992         if (!dr) {
2993                 usb_free_urb(urb);
2994                 return -ENOMEM;
2995         }
2996
2997         dr->bRequestType = USB_TYPE_VENDOR | USB_DIR_IN;
2998         dr->bRequest     = 1;
2999         dr->wIndex       = cpu_to_le16(0);
3000         dr->wValue       = cpu_to_le16(48);
3001         dr->wLength      = cpu_to_le16(size);
3002
3003         buf = kmalloc(size, GFP_KERNEL);
3004         if (!buf) {
3005                 kfree(dr);
3006                 usb_free_urb(urb);
3007                 return -ENOMEM;
3008         }
3009
3010         pipe = usb_rcvctrlpipe(data->udev, 0);
3011
3012         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
3013                              buf, size, btusb_mtk_wmt_recv, hdev);
3014
3015         urb->transfer_flags |= URB_FREE_BUFFER;
3016
3017         usb_anchor_urb(urb, &data->ctrl_anchor);
3018         err = usb_submit_urb(urb, GFP_KERNEL);
3019         if (err < 0) {
3020                 if (err != -EPERM && err != -ENODEV)
3021                         bt_dev_err(hdev, "urb %p submission failed (%d)",
3022                                    urb, -err);
3023                 usb_unanchor_urb(urb);
3024         }
3025
3026         usb_free_urb(urb);
3027
3028         return err;
3029 }
3030
3031 static int btusb_mtk_hci_wmt_sync(struct hci_dev *hdev,
3032                                   struct btmtk_hci_wmt_params *wmt_params)
3033 {
3034         struct btusb_data *data = hci_get_drvdata(hdev);
3035         struct btmtk_hci_wmt_evt_funcc *wmt_evt_funcc;
3036         u32 hlen, status = BTMTK_WMT_INVALID;
3037         struct btmtk_hci_wmt_evt *wmt_evt;
3038         struct btmtk_hci_wmt_cmd *wc;
3039         struct btmtk_wmt_hdr *hdr;
3040         int err;
3041
3042         /* Send the WMT command and wait until the WMT event returns */
3043         hlen = sizeof(*hdr) + wmt_params->dlen;
3044         if (hlen > 255)
3045                 return -EINVAL;
3046
3047         wc = kzalloc(hlen, GFP_KERNEL);
3048         if (!wc)
3049                 return -ENOMEM;
3050
3051         hdr = &wc->hdr;
3052         hdr->dir = 1;
3053         hdr->op = wmt_params->op;
3054         hdr->dlen = cpu_to_le16(wmt_params->dlen + 1);
3055         hdr->flag = wmt_params->flag;
3056         memcpy(wc->data, wmt_params->data, wmt_params->dlen);
3057
3058         set_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
3059
3060         /* WMT cmd/event doesn't follow up the generic HCI cmd/event handling,
3061          * it needs constantly polling control pipe until the host received the
3062          * WMT event, thus, we should require to specifically acquire PM counter
3063          * on the USB to prevent the interface from entering auto suspended
3064          * while WMT cmd/event in progress.
3065          */
3066         err = usb_autopm_get_interface(data->intf);
3067         if (err < 0)
3068                 goto err_free_wc;
3069
3070         err = __hci_cmd_send(hdev, 0xfc6f, hlen, wc);
3071
3072         if (err < 0) {
3073                 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
3074                 usb_autopm_put_interface(data->intf);
3075                 goto err_free_wc;
3076         }
3077
3078         /* Submit control IN URB on demand to process the WMT event */
3079         err = btusb_mtk_submit_wmt_recv_urb(hdev);
3080
3081         usb_autopm_put_interface(data->intf);
3082
3083         if (err < 0)
3084                 return err;
3085
3086         /* The vendor specific WMT commands are all answered by a vendor
3087          * specific event and will have the Command Status or Command
3088          * Complete as with usual HCI command flow control.
3089          *
3090          * After sending the command, wait for BTUSB_TX_WAIT_VND_EVT
3091          * state to be cleared. The driver specific event receive routine
3092          * will clear that state and with that indicate completion of the
3093          * WMT command.
3094          */
3095         err = wait_on_bit_timeout(&data->flags, BTUSB_TX_WAIT_VND_EVT,
3096                                   TASK_INTERRUPTIBLE, HCI_INIT_TIMEOUT);
3097         if (err == -EINTR) {
3098                 bt_dev_err(hdev, "Execution of wmt command interrupted");
3099                 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
3100                 goto err_free_wc;
3101         }
3102
3103         if (err) {
3104                 bt_dev_err(hdev, "Execution of wmt command timed out");
3105                 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
3106                 err = -ETIMEDOUT;
3107                 goto err_free_wc;
3108         }
3109
3110         if (data->evt_skb == NULL)
3111                 goto err_free_wc;
3112
3113         /* Parse and handle the return WMT event */
3114         wmt_evt = (struct btmtk_hci_wmt_evt *)data->evt_skb->data;
3115         if (wmt_evt->whdr.op != hdr->op) {
3116                 bt_dev_err(hdev, "Wrong op received %d expected %d",
3117                            wmt_evt->whdr.op, hdr->op);
3118                 err = -EIO;
3119                 goto err_free_skb;
3120         }
3121
3122         switch (wmt_evt->whdr.op) {
3123         case BTMTK_WMT_SEMAPHORE:
3124                 if (wmt_evt->whdr.flag == 2)
3125                         status = BTMTK_WMT_PATCH_UNDONE;
3126                 else
3127                         status = BTMTK_WMT_PATCH_DONE;
3128                 break;
3129         case BTMTK_WMT_FUNC_CTRL:
3130                 wmt_evt_funcc = (struct btmtk_hci_wmt_evt_funcc *)wmt_evt;
3131                 if (be16_to_cpu(wmt_evt_funcc->status) == 0x404)
3132                         status = BTMTK_WMT_ON_DONE;
3133                 else if (be16_to_cpu(wmt_evt_funcc->status) == 0x420)
3134                         status = BTMTK_WMT_ON_PROGRESS;
3135                 else
3136                         status = BTMTK_WMT_ON_UNDONE;
3137                 break;
3138         }
3139
3140         if (wmt_params->status)
3141                 *wmt_params->status = status;
3142
3143 err_free_skb:
3144         kfree_skb(data->evt_skb);
3145         data->evt_skb = NULL;
3146 err_free_wc:
3147         kfree(wc);
3148         return err;
3149 }
3150
3151 static int btusb_mtk_setup_firmware(struct hci_dev *hdev, const char *fwname)
3152 {
3153         struct btmtk_hci_wmt_params wmt_params;
3154         const struct firmware *fw;
3155         const u8 *fw_ptr;
3156         size_t fw_size;
3157         int err, dlen;
3158         u8 flag, param;
3159
3160         err = reject_firmware(&fw, fwname, &hdev->dev);
3161         if (err < 0) {
3162                 bt_dev_err(hdev, "Failed to load firmware file (%d)", err);
3163                 return err;
3164         }
3165
3166         /* Power on data RAM the firmware relies on. */
3167         param = 1;
3168         wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3169         wmt_params.flag = 3;
3170         wmt_params.dlen = sizeof(param);
3171         wmt_params.data = &param;
3172         wmt_params.status = NULL;
3173
3174         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3175         if (err < 0) {
3176                 bt_dev_err(hdev, "Failed to power on data RAM (%d)", err);
3177                 goto err_release_fw;
3178         }
3179
3180         fw_ptr = fw->data;
3181         fw_size = fw->size;
3182
3183         /* The size of patch header is 30 bytes, should be skip */
3184         if (fw_size < 30) {
3185                 err = -EINVAL;
3186                 goto err_release_fw;
3187         }
3188
3189         fw_size -= 30;
3190         fw_ptr += 30;
3191         flag = 1;
3192
3193         wmt_params.op = BTMTK_WMT_PATCH_DWNLD;
3194         wmt_params.status = NULL;
3195
3196         while (fw_size > 0) {
3197                 dlen = min_t(int, 250, fw_size);
3198
3199                 /* Tell deivice the position in sequence */
3200                 if (fw_size - dlen <= 0)
3201                         flag = 3;
3202                 else if (fw_size < fw->size - 30)
3203                         flag = 2;
3204
3205                 wmt_params.flag = flag;
3206                 wmt_params.dlen = dlen;
3207                 wmt_params.data = fw_ptr;
3208
3209                 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3210                 if (err < 0) {
3211                         bt_dev_err(hdev, "Failed to send wmt patch dwnld (%d)",
3212                                    err);
3213                         goto err_release_fw;
3214                 }
3215
3216                 fw_size -= dlen;
3217                 fw_ptr += dlen;
3218         }
3219
3220         wmt_params.op = BTMTK_WMT_RST;
3221         wmt_params.flag = 4;
3222         wmt_params.dlen = 0;
3223         wmt_params.data = NULL;
3224         wmt_params.status = NULL;
3225
3226         /* Activate funciton the firmware providing to */
3227         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3228         if (err < 0) {
3229                 bt_dev_err(hdev, "Failed to send wmt rst (%d)", err);
3230                 goto err_release_fw;
3231         }
3232
3233         /* Wait a few moments for firmware activation done */
3234         usleep_range(10000, 12000);
3235
3236 err_release_fw:
3237         release_firmware(fw);
3238
3239         return err;
3240 }
3241
3242 static int btusb_mtk_func_query(struct hci_dev *hdev)
3243 {
3244         struct btmtk_hci_wmt_params wmt_params;
3245         int status, err;
3246         u8 param = 0;
3247
3248         /* Query whether the function is enabled */
3249         wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3250         wmt_params.flag = 4;
3251         wmt_params.dlen = sizeof(param);
3252         wmt_params.data = &param;
3253         wmt_params.status = &status;
3254
3255         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3256         if (err < 0) {
3257                 bt_dev_err(hdev, "Failed to query function status (%d)", err);
3258                 return err;
3259         }
3260
3261         return status;
3262 }
3263
3264 static int btusb_mtk_reg_read(struct btusb_data *data, u32 reg, u32 *val)
3265 {
3266         int pipe, err, size = sizeof(u32);
3267         void *buf;
3268
3269         buf = kzalloc(size, GFP_KERNEL);
3270         if (!buf)
3271                 return -ENOMEM;
3272
3273         pipe = usb_rcvctrlpipe(data->udev, 0);
3274         err = usb_control_msg(data->udev, pipe, 0x63,
3275                               USB_TYPE_VENDOR | USB_DIR_IN,
3276                               reg >> 16, reg & 0xffff,
3277                               buf, size, USB_CTRL_SET_TIMEOUT);
3278         if (err < 0)
3279                 goto err_free_buf;
3280
3281         *val = get_unaligned_le32(buf);
3282
3283 err_free_buf:
3284         kfree(buf);
3285
3286         return err;
3287 }
3288
3289 static int btusb_mtk_id_get(struct btusb_data *data, u32 reg, u32 *id)
3290 {
3291         return btusb_mtk_reg_read(data, reg, id);
3292 }
3293
3294 static int btusb_mtk_setup(struct hci_dev *hdev)
3295 {
3296         struct btusb_data *data = hci_get_drvdata(hdev);
3297         struct btmtk_hci_wmt_params wmt_params;
3298         ktime_t calltime, delta, rettime;
3299         struct btmtk_tci_sleep tci_sleep;
3300         unsigned long long duration;
3301         struct sk_buff *skb;
3302         const char *fwname;
3303         int err, status;
3304         u32 dev_id;
3305         u8 param;
3306
3307         calltime = ktime_get();
3308
3309         err = btusb_mtk_id_get(data, 0x80000008, &dev_id);
3310         if (err < 0) {
3311                 bt_dev_err(hdev, "Failed to get device id (%d)", err);
3312                 return err;
3313         }
3314
3315         switch (dev_id) {
3316         case 0x7663:
3317                 fwname = FIRMWARE_MT7663;
3318                 break;
3319         case 0x7668:
3320                 fwname = FIRMWARE_MT7668;
3321                 break;
3322         default:
3323                 bt_dev_err(hdev, "Unsupported support hardware variant (%08x)",
3324                            dev_id);
3325                 return -ENODEV;
3326         }
3327
3328         /* Query whether the firmware is already download */
3329         wmt_params.op = BTMTK_WMT_SEMAPHORE;
3330         wmt_params.flag = 1;
3331         wmt_params.dlen = 0;
3332         wmt_params.data = NULL;
3333         wmt_params.status = &status;
3334
3335         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3336         if (err < 0) {
3337                 bt_dev_err(hdev, "Failed to query firmware status (%d)", err);
3338                 return err;
3339         }
3340
3341         if (status == BTMTK_WMT_PATCH_DONE) {
3342                 bt_dev_info(hdev, "firmware already downloaded");
3343                 goto ignore_setup_fw;
3344         }
3345
3346         /* Setup a firmware which the device definitely requires */
3347         err = btusb_mtk_setup_firmware(hdev, fwname);
3348         if (err < 0)
3349                 return err;
3350
3351 ignore_setup_fw:
3352         err = readx_poll_timeout(btusb_mtk_func_query, hdev, status,
3353                                  status < 0 || status != BTMTK_WMT_ON_PROGRESS,
3354                                  2000, 5000000);
3355         /* -ETIMEDOUT happens */
3356         if (err < 0)
3357                 return err;
3358
3359         /* The other errors happen in btusb_mtk_func_query */
3360         if (status < 0)
3361                 return status;
3362
3363         if (status == BTMTK_WMT_ON_DONE) {
3364                 bt_dev_info(hdev, "function already on");
3365                 goto ignore_func_on;
3366         }
3367
3368         /* Enable Bluetooth protocol */
3369         param = 1;
3370         wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3371         wmt_params.flag = 0;
3372         wmt_params.dlen = sizeof(param);
3373         wmt_params.data = &param;
3374         wmt_params.status = NULL;
3375
3376         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3377         if (err < 0) {
3378                 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
3379                 return err;
3380         }
3381
3382 ignore_func_on:
3383         /* Apply the low power environment setup */
3384         tci_sleep.mode = 0x5;
3385         tci_sleep.duration = cpu_to_le16(0x640);
3386         tci_sleep.host_duration = cpu_to_le16(0x640);
3387         tci_sleep.host_wakeup_pin = 0;
3388         tci_sleep.time_compensation = 0;
3389
3390         skb = __hci_cmd_sync(hdev, 0xfc7a, sizeof(tci_sleep), &tci_sleep,
3391                              HCI_INIT_TIMEOUT);
3392         if (IS_ERR(skb)) {
3393                 err = PTR_ERR(skb);
3394                 bt_dev_err(hdev, "Failed to apply low power setting (%d)", err);
3395                 return err;
3396         }
3397         kfree_skb(skb);
3398
3399         rettime = ktime_get();
3400         delta = ktime_sub(rettime, calltime);
3401         duration = (unsigned long long)ktime_to_ns(delta) >> 10;
3402
3403         bt_dev_info(hdev, "Device setup in %llu usecs", duration);
3404
3405         return 0;
3406 }
3407
3408 static int btusb_mtk_shutdown(struct hci_dev *hdev)
3409 {
3410         struct btmtk_hci_wmt_params wmt_params;
3411         u8 param = 0;
3412         int err;
3413
3414         /* Disable the device */
3415         wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3416         wmt_params.flag = 0;
3417         wmt_params.dlen = sizeof(param);
3418         wmt_params.data = &param;
3419         wmt_params.status = NULL;
3420
3421         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3422         if (err < 0) {
3423                 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
3424                 return err;
3425         }
3426
3427         return 0;
3428 }
3429
3430 /*(DEBLOBBED)*/
3431
3432 #ifdef CONFIG_PM
3433 /* Configure an out-of-band gpio as wake-up pin, if specified in device tree */
3434 static int marvell_config_oob_wake(struct hci_dev *hdev)
3435 {
3436         struct sk_buff *skb;
3437         struct btusb_data *data = hci_get_drvdata(hdev);
3438         struct device *dev = &data->udev->dev;
3439         u16 pin, gap, opcode;
3440         int ret;
3441         u8 cmd[5];
3442
3443         /* Move on if no wakeup pin specified */
3444         if (of_property_read_u16(dev->of_node, "marvell,wakeup-pin", &pin) ||
3445             of_property_read_u16(dev->of_node, "marvell,wakeup-gap-ms", &gap))
3446                 return 0;
3447
3448         /* Vendor specific command to configure a GPIO as wake-up pin */
3449         opcode = hci_opcode_pack(0x3F, 0x59);
3450         cmd[0] = opcode & 0xFF;
3451         cmd[1] = opcode >> 8;
3452         cmd[2] = 2; /* length of parameters that follow */
3453         cmd[3] = pin;
3454         cmd[4] = gap; /* time in ms, for which wakeup pin should be asserted */
3455
3456         skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
3457         if (!skb) {
3458                 bt_dev_err(hdev, "%s: No memory\n", __func__);
3459                 return -ENOMEM;
3460         }
3461
3462         skb_put_data(skb, cmd, sizeof(cmd));
3463         hci_skb_pkt_type(skb) = HCI_COMMAND_PKT;
3464
3465         ret = btusb_send_frame(hdev, skb);
3466         if (ret) {
3467                 bt_dev_err(hdev, "%s: configuration failed\n", __func__);
3468                 kfree_skb(skb);
3469                 return ret;
3470         }
3471
3472         return 0;
3473 }
3474 #endif
3475
3476 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
3477                                     const bdaddr_t *bdaddr)
3478 {
3479         struct sk_buff *skb;
3480         u8 buf[8];
3481         long ret;
3482
3483         buf[0] = 0xfe;
3484         buf[1] = sizeof(bdaddr_t);
3485         memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
3486
3487         skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
3488         if (IS_ERR(skb)) {
3489                 ret = PTR_ERR(skb);
3490                 bt_dev_err(hdev, "changing Marvell device address failed (%ld)",
3491                            ret);
3492                 return ret;
3493         }
3494         kfree_skb(skb);
3495
3496         return 0;
3497 }
3498
3499 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
3500                                     const bdaddr_t *bdaddr)
3501 {
3502         struct sk_buff *skb;
3503         u8 buf[10];
3504         long ret;
3505
3506         buf[0] = 0x01;
3507         buf[1] = 0x01;
3508         buf[2] = 0x00;
3509         buf[3] = sizeof(bdaddr_t);
3510         memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
3511
3512         skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
3513         if (IS_ERR(skb)) {
3514                 ret = PTR_ERR(skb);
3515                 bt_dev_err(hdev, "Change address command failed (%ld)", ret);
3516                 return ret;
3517         }
3518         kfree_skb(skb);
3519
3520         return 0;
3521 }
3522
3523 static int btusb_set_bdaddr_wcn6855(struct hci_dev *hdev,
3524                                 const bdaddr_t *bdaddr)
3525 {
3526         struct sk_buff *skb;
3527         u8 buf[6];
3528         long ret;
3529
3530         memcpy(buf, bdaddr, sizeof(bdaddr_t));
3531
3532         skb = __hci_cmd_sync_ev(hdev, 0xfc14, sizeof(buf), buf,
3533                                 HCI_EV_CMD_COMPLETE, HCI_INIT_TIMEOUT);
3534         if (IS_ERR(skb)) {
3535                 ret = PTR_ERR(skb);
3536                 bt_dev_err(hdev, "Change address command failed (%ld)", ret);
3537                 return ret;
3538         }
3539         kfree_skb(skb);
3540
3541         return 0;
3542 }
3543
3544 #define QCA_DFU_PACKET_LEN      4096
3545
3546 #define QCA_GET_TARGET_VERSION  0x09
3547 #define QCA_CHECK_STATUS        0x05
3548 #define QCA_DFU_DOWNLOAD        0x01
3549
3550 #define QCA_SYSCFG_UPDATED      0x40
3551 #define QCA_PATCH_UPDATED       0x80
3552 #define QCA_DFU_TIMEOUT         3000
3553
3554 struct qca_version {
3555         __le32  rom_version;
3556         __le32  patch_version;
3557         __le32  ram_version;
3558         __le32  ref_clock;
3559         __u8    reserved[4];
3560 } __packed;
3561
3562 struct qca_rampatch_version {
3563         __le16  rom_version_high;
3564         __le16  rom_version_low;
3565         __le16  patch_version;
3566 } __packed;
3567
3568 struct qca_device_info {
3569         u32     rom_version;
3570         u8      rampatch_hdr;   /* length of header in rampatch */
3571         u8      nvm_hdr;        /* length of header in NVM */
3572         u8      ver_offset;     /* offset of version structure in rampatch */
3573 };
3574
3575 static const struct qca_device_info qca_devices_table[] = {
3576         { 0x00000100, 20, 4,  8 }, /* Rome 1.0 */
3577         { 0x00000101, 20, 4,  8 }, /* Rome 1.1 */
3578         { 0x00000200, 28, 4, 16 }, /* Rome 2.0 */
3579         { 0x00000201, 28, 4, 16 }, /* Rome 2.1 */
3580         { 0x00000300, 28, 4, 16 }, /* Rome 3.0 */
3581         { 0x00000302, 28, 4, 16 }, /* Rome 3.2 */
3582         { 0x00130100, 40, 4, 16 }, /* WCN6855 1.0 */
3583         { 0x00130200, 40, 4, 16 }, /* WCN6855 2.0 */
3584 };
3585
3586 static int btusb_qca_send_vendor_req(struct usb_device *udev, u8 request,
3587                                      void *data, u16 size)
3588 {
3589         int pipe, err;
3590         u8 *buf;
3591
3592         buf = kmalloc(size, GFP_KERNEL);
3593         if (!buf)
3594                 return -ENOMEM;
3595
3596         /* Found some of USB hosts have IOT issues with ours so that we should
3597          * not wait until HCI layer is ready.
3598          */
3599         pipe = usb_rcvctrlpipe(udev, 0);
3600         err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
3601                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
3602         if (err < 0) {
3603                 dev_err(&udev->dev, "Failed to access otp area (%d)", err);
3604                 goto done;
3605         }
3606
3607         memcpy(data, buf, size);
3608
3609 done:
3610         kfree(buf);
3611
3612         return err;
3613 }
3614
3615 static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
3616                                        const struct firmware *firmware,
3617                                        size_t hdr_size)
3618 {
3619         struct btusb_data *btdata = hci_get_drvdata(hdev);
3620         struct usb_device *udev = btdata->udev;
3621         size_t count, size, sent = 0;
3622         int pipe, len, err;
3623         u8 *buf;
3624
3625         buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
3626         if (!buf)
3627                 return -ENOMEM;
3628
3629         count = firmware->size;
3630
3631         size = min_t(size_t, count, hdr_size);
3632         memcpy(buf, firmware->data, size);
3633
3634         /* USB patches should go down to controller through USB path
3635          * because binary format fits to go down through USB channel.
3636          * USB control path is for patching headers and USB bulk is for
3637          * patch body.
3638          */
3639         pipe = usb_sndctrlpipe(udev, 0);
3640         err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
3641                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
3642         if (err < 0) {
3643                 bt_dev_err(hdev, "Failed to send headers (%d)", err);
3644                 goto done;
3645         }
3646
3647         sent += size;
3648         count -= size;
3649
3650         /* ep2 need time to switch from function acl to function dfu,
3651          * so we add 20ms delay here.
3652          */
3653         msleep(20);
3654
3655         while (count) {
3656                 size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
3657
3658                 memcpy(buf, firmware->data + sent, size);
3659
3660                 pipe = usb_sndbulkpipe(udev, 0x02);
3661                 err = usb_bulk_msg(udev, pipe, buf, size, &len,
3662                                    QCA_DFU_TIMEOUT);
3663                 if (err < 0) {
3664                         bt_dev_err(hdev, "Failed to send body at %zd of %zd (%d)",
3665                                    sent, firmware->size, err);
3666                         break;
3667                 }
3668
3669                 if (size != len) {
3670                         bt_dev_err(hdev, "Failed to get bulk buffer");
3671                         err = -EILSEQ;
3672                         break;
3673                 }
3674
3675                 sent  += size;
3676                 count -= size;
3677         }
3678
3679 done:
3680         kfree(buf);
3681         return err;
3682 }
3683
3684 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
3685                                          struct qca_version *ver,
3686                                          const struct qca_device_info *info)
3687 {
3688         struct qca_rampatch_version *rver;
3689         const struct firmware *fw;
3690         u32 ver_rom, ver_patch, rver_rom;
3691         u16 rver_rom_low, rver_rom_high, rver_patch;
3692         char fwname[64];
3693         int err;
3694
3695         ver_rom = le32_to_cpu(ver->rom_version);
3696         ver_patch = le32_to_cpu(ver->patch_version);
3697
3698         snprintf(fwname, sizeof(fwname), "/*(DEBLOBBED)*/", ver_rom);
3699
3700         err = reject_firmware(&fw, fwname, &hdev->dev);
3701         if (err) {
3702                 bt_dev_err(hdev, "failed to request rampatch file: %s (%d)",
3703                            fwname, err);
3704                 return err;
3705         }
3706
3707         bt_dev_info(hdev, "using rampatch file: %s", fwname);
3708
3709         rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
3710         rver_rom_low = le16_to_cpu(rver->rom_version_low);
3711         rver_patch = le16_to_cpu(rver->patch_version);
3712
3713         if (ver_rom & ~0xffffU) {
3714                 rver_rom_high = le16_to_cpu(rver->rom_version_high);
3715                 rver_rom = le32_to_cpu(rver_rom_high << 16 | rver_rom_low);
3716         } else {
3717                 rver_rom = rver_rom_low;
3718         }
3719
3720         bt_dev_info(hdev, "QCA: patch rome 0x%x build 0x%x, "
3721                     "firmware rome 0x%x build 0x%x",
3722                     rver_rom, rver_patch, ver_rom, ver_patch);
3723
3724         if (rver_rom != ver_rom || rver_patch <= ver_patch) {
3725                 bt_dev_err(hdev, "rampatch file version did not match with firmware");
3726                 err = -EINVAL;
3727                 goto done;
3728         }
3729
3730         err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
3731
3732 done:
3733         release_firmware(fw);
3734
3735         return err;
3736 }
3737
3738 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
3739                                     struct qca_version *ver,
3740                                     const struct qca_device_info *info)
3741 {
3742         const struct firmware *fw;
3743         char fwname[64];
3744         int err;
3745
3746         snprintf(fwname, sizeof(fwname), "/*(DEBLOBBED)*/",
3747                  le32_to_cpu(ver->rom_version));
3748
3749         err = reject_firmware(&fw, fwname, &hdev->dev);
3750         if (err) {
3751                 bt_dev_err(hdev, "failed to request NVM file: %s (%d)",
3752                            fwname, err);
3753                 return err;
3754         }
3755
3756         bt_dev_info(hdev, "using NVM file: %s", fwname);
3757
3758         err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
3759
3760         release_firmware(fw);
3761
3762         return err;
3763 }
3764
3765 /* identify the ROM version and check whether patches are needed */
3766 static bool btusb_qca_need_patch(struct usb_device *udev)
3767 {
3768         struct qca_version ver;
3769
3770         if (btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3771                                       sizeof(ver)) < 0)
3772                 return false;
3773         /* only low ROM versions need patches */
3774         return !(le32_to_cpu(ver.rom_version) & ~0xffffU);
3775 }
3776
3777 static int btusb_setup_qca(struct hci_dev *hdev)
3778 {
3779         struct btusb_data *btdata = hci_get_drvdata(hdev);
3780         struct usb_device *udev = btdata->udev;
3781         const struct qca_device_info *info = NULL;
3782         struct qca_version ver;
3783         u32 ver_rom;
3784         u8 status;
3785         int i, err;
3786
3787         err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3788                                         sizeof(ver));
3789         if (err < 0)
3790                 return err;
3791
3792         ver_rom = le32_to_cpu(ver.rom_version);
3793
3794         for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
3795                 if (ver_rom == qca_devices_table[i].rom_version)
3796                         info = &qca_devices_table[i];
3797         }
3798         if (!info) {
3799                 /* If the rom_version is not matched in the qca_devices_table
3800                  * and the high ROM version is not zero, we assume this chip no
3801                  * need to load the rampatch and nvm.
3802                  */
3803                 if (ver_rom & ~0xffffU)
3804                         return 0;
3805
3806                 bt_dev_err(hdev, "don't support firmware rome 0x%x", ver_rom);
3807                 return -ENODEV;
3808         }
3809
3810         err = btusb_qca_send_vendor_req(udev, QCA_CHECK_STATUS, &status,
3811                                         sizeof(status));
3812         if (err < 0)
3813                 return err;
3814
3815         if (!(status & QCA_PATCH_UPDATED)) {
3816                 err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
3817                 if (err < 0)
3818                         return err;
3819         }
3820
3821         if (!(status & QCA_SYSCFG_UPDATED)) {
3822                 err = btusb_setup_qca_load_nvm(hdev, &ver, info);
3823                 if (err < 0)
3824                         return err;
3825         }
3826
3827         return 0;
3828 }
3829
3830 static inline int __set_diag_interface(struct hci_dev *hdev)
3831 {
3832         struct btusb_data *data = hci_get_drvdata(hdev);
3833         struct usb_interface *intf = data->diag;
3834         int i;
3835
3836         if (!data->diag)
3837                 return -ENODEV;
3838
3839         data->diag_tx_ep = NULL;
3840         data->diag_rx_ep = NULL;
3841
3842         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
3843                 struct usb_endpoint_descriptor *ep_desc;
3844
3845                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
3846
3847                 if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
3848                         data->diag_tx_ep = ep_desc;
3849                         continue;
3850                 }
3851
3852                 if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
3853                         data->diag_rx_ep = ep_desc;
3854                         continue;
3855                 }
3856         }
3857
3858         if (!data->diag_tx_ep || !data->diag_rx_ep) {
3859                 bt_dev_err(hdev, "invalid diagnostic descriptors");
3860                 return -ENODEV;
3861         }
3862
3863         return 0;
3864 }
3865
3866 static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable)
3867 {
3868         struct btusb_data *data = hci_get_drvdata(hdev);
3869         struct sk_buff *skb;
3870         struct urb *urb;
3871         unsigned int pipe;
3872
3873         if (!data->diag_tx_ep)
3874                 return ERR_PTR(-ENODEV);
3875
3876         urb = usb_alloc_urb(0, GFP_KERNEL);
3877         if (!urb)
3878                 return ERR_PTR(-ENOMEM);
3879
3880         skb = bt_skb_alloc(2, GFP_KERNEL);
3881         if (!skb) {
3882                 usb_free_urb(urb);
3883                 return ERR_PTR(-ENOMEM);
3884         }
3885
3886         skb_put_u8(skb, 0xf0);
3887         skb_put_u8(skb, enable);
3888
3889         pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress);
3890
3891         usb_fill_bulk_urb(urb, data->udev, pipe,
3892                           skb->data, skb->len, btusb_tx_complete, skb);
3893
3894         skb->dev = (void *)hdev;
3895
3896         return urb;
3897 }
3898
3899 static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable)
3900 {
3901         struct btusb_data *data = hci_get_drvdata(hdev);
3902         struct urb *urb;
3903
3904         if (!data->diag)
3905                 return -ENODEV;
3906
3907         if (!test_bit(HCI_RUNNING, &hdev->flags))
3908                 return -ENETDOWN;
3909
3910         urb = alloc_diag_urb(hdev, enable);
3911         if (IS_ERR(urb))
3912                 return PTR_ERR(urb);
3913
3914         return submit_or_queue_tx_urb(hdev, urb);
3915 }
3916
3917 #ifdef CONFIG_PM
3918 static irqreturn_t btusb_oob_wake_handler(int irq, void *priv)
3919 {
3920         struct btusb_data *data = priv;
3921
3922         pm_wakeup_event(&data->udev->dev, 0);
3923         pm_system_wakeup();
3924
3925         /* Disable only if not already disabled (keep it balanced) */
3926         if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
3927                 disable_irq_nosync(irq);
3928                 disable_irq_wake(irq);
3929         }
3930         return IRQ_HANDLED;
3931 }
3932
3933 static const struct of_device_id btusb_match_table[] = {
3934         { .compatible = "usb1286,204e" },
3935         { .compatible = "usbcf3,e300" }, /* QCA6174A */
3936         { .compatible = "usb4ca,301a" }, /* QCA6174A (Lite-On) */
3937         { }
3938 };
3939 MODULE_DEVICE_TABLE(of, btusb_match_table);
3940
3941 /* Use an oob wakeup pin? */
3942 static int btusb_config_oob_wake(struct hci_dev *hdev)
3943 {
3944         struct btusb_data *data = hci_get_drvdata(hdev);
3945         struct device *dev = &data->udev->dev;
3946         int irq, ret;
3947
3948         clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
3949
3950         if (!of_match_device(btusb_match_table, dev))
3951                 return 0;
3952
3953         /* Move on if no IRQ specified */
3954         irq = of_irq_get_byname(dev->of_node, "wakeup");
3955         if (irq <= 0) {
3956                 bt_dev_dbg(hdev, "%s: no OOB Wakeup IRQ in DT", __func__);
3957                 return 0;
3958         }
3959
3960         irq_set_status_flags(irq, IRQ_NOAUTOEN);
3961         ret = devm_request_irq(&hdev->dev, irq, btusb_oob_wake_handler,
3962                                0, "OOB Wake-on-BT", data);
3963         if (ret) {
3964                 bt_dev_err(hdev, "%s: IRQ request failed", __func__);
3965                 return ret;
3966         }
3967
3968         ret = device_init_wakeup(dev, true);
3969         if (ret) {
3970                 bt_dev_err(hdev, "%s: failed to init_wakeup", __func__);
3971                 return ret;
3972         }
3973
3974         data->oob_wake_irq = irq;
3975         bt_dev_info(hdev, "OOB Wake-on-BT configured at IRQ %u", irq);
3976         return 0;
3977 }
3978 #endif
3979
3980 static void btusb_check_needs_reset_resume(struct usb_interface *intf)
3981 {
3982         if (dmi_check_system(btusb_needs_reset_resume_table))
3983                 interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME;
3984 }
3985
3986 static bool btusb_prevent_wake(struct hci_dev *hdev)
3987 {
3988         struct btusb_data *data = hci_get_drvdata(hdev);
3989
3990         if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags))
3991                 return true;
3992
3993         return !device_may_wakeup(&data->udev->dev);
3994 }
3995
3996 static int btusb_probe(struct usb_interface *intf,
3997                        const struct usb_device_id *id)
3998 {
3999         struct usb_endpoint_descriptor *ep_desc;
4000         struct gpio_desc *reset_gpio;
4001         struct btusb_data *data;
4002         struct hci_dev *hdev;
4003         unsigned ifnum_base;
4004         int i, err;
4005
4006         BT_DBG("intf %p id %p", intf, id);
4007
4008         /* interface numbers are hardcoded in the spec */
4009         if (intf->cur_altsetting->desc.bInterfaceNumber != 0) {
4010                 if (!(id->driver_info & BTUSB_IFNUM_2))
4011                         return -ENODEV;
4012                 if (intf->cur_altsetting->desc.bInterfaceNumber != 2)
4013                         return -ENODEV;
4014         }
4015
4016         ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber;
4017
4018         if (!id->driver_info) {
4019                 const struct usb_device_id *match;
4020
4021                 match = usb_match_id(intf, blacklist_table);
4022                 if (match)
4023                         id = match;
4024         }
4025
4026         if (id->driver_info == BTUSB_IGNORE)
4027                 return -ENODEV;
4028
4029         if (id->driver_info & BTUSB_ATH3012) {
4030                 struct usb_device *udev = interface_to_usbdev(intf);
4031
4032                 /* Old firmware would otherwise let ath3k driver load
4033                  * patch and sysconfig files
4034                  */
4035                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001 &&
4036                     !btusb_qca_need_patch(udev))
4037                         return -ENODEV;
4038         }
4039
4040         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
4041         if (!data)
4042                 return -ENOMEM;
4043
4044         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
4045                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
4046
4047                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
4048                         data->intr_ep = ep_desc;
4049                         continue;
4050                 }
4051
4052                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
4053                         data->bulk_tx_ep = ep_desc;
4054                         continue;
4055                 }
4056
4057                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
4058                         data->bulk_rx_ep = ep_desc;
4059                         continue;
4060                 }
4061         }
4062
4063         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
4064                 return -ENODEV;
4065
4066         if (id->driver_info & BTUSB_AMP) {
4067                 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
4068                 data->cmdreq = 0x2b;
4069         } else {
4070                 data->cmdreq_type = USB_TYPE_CLASS;
4071                 data->cmdreq = 0x00;
4072         }
4073
4074         data->udev = interface_to_usbdev(intf);
4075         data->intf = intf;
4076
4077         INIT_WORK(&data->work, btusb_work);
4078         INIT_WORK(&data->waker, btusb_waker);
4079         init_usb_anchor(&data->deferred);
4080         init_usb_anchor(&data->tx_anchor);
4081         spin_lock_init(&data->txlock);
4082
4083         init_usb_anchor(&data->intr_anchor);
4084         init_usb_anchor(&data->bulk_anchor);
4085         init_usb_anchor(&data->isoc_anchor);
4086         init_usb_anchor(&data->diag_anchor);
4087         init_usb_anchor(&data->ctrl_anchor);
4088         spin_lock_init(&data->rxlock);
4089
4090         if (id->driver_info & BTUSB_INTEL_NEW) {
4091                 data->recv_event = btusb_recv_event_intel;
4092                 data->recv_bulk = btusb_recv_bulk_intel;
4093                 set_bit(BTUSB_BOOTLOADER, &data->flags);
4094         } else {
4095                 data->recv_event = hci_recv_frame;
4096                 data->recv_bulk = btusb_recv_bulk;
4097         }
4098
4099         hdev = hci_alloc_dev();
4100         if (!hdev)
4101                 return -ENOMEM;
4102
4103         hdev->bus = HCI_USB;
4104         hci_set_drvdata(hdev, data);
4105
4106         if (id->driver_info & BTUSB_AMP)
4107                 hdev->dev_type = HCI_AMP;
4108         else
4109                 hdev->dev_type = HCI_PRIMARY;
4110
4111         data->hdev = hdev;
4112
4113         SET_HCIDEV_DEV(hdev, &intf->dev);
4114
4115         reset_gpio = gpiod_get_optional(&data->udev->dev, "reset",
4116                                         GPIOD_OUT_LOW);
4117         if (IS_ERR(reset_gpio)) {
4118                 err = PTR_ERR(reset_gpio);
4119                 goto out_free_dev;
4120         } else if (reset_gpio) {
4121                 data->reset_gpio = reset_gpio;
4122         }
4123
4124         hdev->open   = btusb_open;
4125         hdev->close  = btusb_close;
4126         hdev->flush  = btusb_flush;
4127         hdev->send   = btusb_send_frame;
4128         hdev->notify = btusb_notify;
4129         hdev->prevent_wake = btusb_prevent_wake;
4130
4131 #ifdef CONFIG_PM
4132         err = btusb_config_oob_wake(hdev);
4133         if (err)
4134                 goto out_free_dev;
4135
4136         /* Marvell devices may need a specific chip configuration */
4137         if (id->driver_info & BTUSB_MARVELL && data->oob_wake_irq) {
4138                 err = marvell_config_oob_wake(hdev);
4139                 if (err)
4140                         goto out_free_dev;
4141         }
4142 #endif
4143         if (id->driver_info & BTUSB_CW6622)
4144                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
4145
4146         if (id->driver_info & BTUSB_BCM2045)
4147                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
4148
4149         if (id->driver_info & BTUSB_BCM92035)
4150                 hdev->setup = btusb_setup_bcm92035;
4151
4152         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) &&
4153             (id->driver_info & BTUSB_BCM_PATCHRAM)) {
4154                 hdev->manufacturer = 15;
4155                 hdev->setup = btbcm_setup_patchram;
4156                 hdev->set_diag = btusb_bcm_set_diag;
4157                 hdev->set_bdaddr = btbcm_set_bdaddr;
4158
4159                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
4160                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
4161         }
4162
4163         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) &&
4164             (id->driver_info & BTUSB_BCM_APPLE)) {
4165                 hdev->manufacturer = 15;
4166                 hdev->setup = btbcm_setup_apple;
4167                 hdev->set_diag = btusb_bcm_set_diag;
4168
4169                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
4170                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
4171         }
4172
4173         if (id->driver_info & BTUSB_INTEL) {
4174                 hdev->manufacturer = 2;
4175                 hdev->setup = btusb_setup_intel;
4176                 hdev->shutdown = btusb_shutdown_intel;
4177                 hdev->set_diag = btintel_set_diag_mfg;
4178                 hdev->set_bdaddr = btintel_set_bdaddr;
4179                 hdev->cmd_timeout = btusb_intel_cmd_timeout;
4180                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
4181                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4182                 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
4183         }
4184
4185         if (id->driver_info & BTUSB_INTEL_NEW) {
4186                 hdev->manufacturer = 2;
4187                 hdev->send = btusb_send_frame_intel;
4188                 hdev->setup = btusb_setup_intel_new;
4189                 hdev->shutdown = btusb_shutdown_intel_new;
4190                 hdev->hw_error = btintel_hw_error;
4191                 hdev->set_diag = btintel_set_diag;
4192                 hdev->set_bdaddr = btintel_set_bdaddr;
4193                 hdev->cmd_timeout = btusb_intel_cmd_timeout;
4194                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
4195                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4196                 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
4197         }
4198
4199         if (id->driver_info & BTUSB_MARVELL)
4200                 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
4201
4202         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_MTK) &&
4203             (id->driver_info & BTUSB_MEDIATEK)) {
4204                 hdev->setup = btusb_mtk_setup;
4205                 hdev->shutdown = btusb_mtk_shutdown;
4206                 hdev->manufacturer = 70;
4207                 set_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks);
4208         }
4209
4210         if (id->driver_info & BTUSB_SWAVE) {
4211                 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
4212                 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
4213         }
4214
4215         if (id->driver_info & BTUSB_INTEL_BOOT) {
4216                 hdev->manufacturer = 2;
4217                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
4218         }
4219
4220         if (id->driver_info & BTUSB_ATH3012) {
4221                 data->setup_on_usb = btusb_setup_qca;
4222                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
4223                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4224                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
4225         }
4226
4227         if (id->driver_info & BTUSB_QCA_ROME) {
4228                 data->setup_on_usb = btusb_setup_qca;
4229                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
4230                 hdev->cmd_timeout = btusb_qca_cmd_timeout;
4231                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4232                 btusb_check_needs_reset_resume(intf);
4233         }
4234
4235         if (id->driver_info & BTUSB_QCA_WCN6855) {
4236                 data->setup_on_usb = btusb_setup_qca;
4237                 hdev->set_bdaddr = btusb_set_bdaddr_wcn6855;
4238                 hdev->cmd_timeout = btusb_qca_cmd_timeout;
4239                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4240         }
4241
4242         if (id->driver_info & BTUSB_AMP) {
4243                 /* AMP controllers do not support SCO packets */
4244                 data->isoc = NULL;
4245         } else {
4246                 /* Interface orders are hardcoded in the specification */
4247                 data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1);
4248                 data->isoc_ifnum = ifnum_base + 1;
4249         }
4250
4251         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_RTL) &&
4252             (id->driver_info & BTUSB_REALTEK)) {
4253                 hdev->setup = btrtl_setup_realtek;
4254                 hdev->shutdown = btrtl_shutdown_realtek;
4255                 hdev->cmd_timeout = btusb_rtl_cmd_timeout;
4256
4257                 /* Realtek devices lose their updated firmware over global
4258                  * suspend that means host doesn't send SET_FEATURE
4259                  * (DEVICE_REMOTE_WAKEUP)
4260                  */
4261                 set_bit(BTUSB_WAKEUP_DISABLE, &data->flags);
4262                 set_bit(BTUSB_USE_ALT3_FOR_WBS, &data->flags);
4263         }
4264
4265         if (!reset)
4266                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
4267
4268         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
4269                 if (!disable_scofix)
4270                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
4271         }
4272
4273         if (id->driver_info & BTUSB_BROKEN_ISOC)
4274                 data->isoc = NULL;
4275
4276         if (id->driver_info & BTUSB_WIDEBAND_SPEECH)
4277                 set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED, &hdev->quirks);
4278
4279         if (id->driver_info & BTUSB_VALID_LE_STATES)
4280                 set_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks);
4281
4282         if (id->driver_info & BTUSB_DIGIANSWER) {
4283                 data->cmdreq_type = USB_TYPE_VENDOR;
4284                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
4285         }
4286
4287         if (id->driver_info & BTUSB_CSR) {
4288                 struct usb_device *udev = data->udev;
4289                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
4290
4291                 /* Old firmware would otherwise execute USB reset */
4292                 if (bcdDevice < 0x117)
4293                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
4294
4295                 /* This must be set first in case we disable it for fakes */
4296                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4297
4298                 /* Fake CSR devices with broken commands */
4299                 if (le16_to_cpu(udev->descriptor.idVendor)  == 0x0a12 &&
4300                     le16_to_cpu(udev->descriptor.idProduct) == 0x0001)
4301                         hdev->setup = btusb_setup_csr;
4302         }
4303
4304         if (id->driver_info & BTUSB_SNIFFER) {
4305                 struct usb_device *udev = data->udev;
4306
4307                 /* New sniffer firmware has crippled HCI interface */
4308                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
4309                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
4310         }
4311
4312         if (id->driver_info & BTUSB_INTEL_BOOT) {
4313                 /* A bug in the bootloader causes that interrupt interface is
4314                  * only enabled after receiving SetInterface(0, AltSetting=0).
4315                  */
4316                 err = usb_set_interface(data->udev, 0, 0);
4317                 if (err < 0) {
4318                         BT_ERR("failed to set interface 0, alt 0 %d", err);
4319                         goto out_free_dev;
4320                 }
4321         }
4322
4323         if (data->isoc) {
4324                 err = usb_driver_claim_interface(&btusb_driver,
4325                                                  data->isoc, data);
4326                 if (err < 0)
4327                         goto out_free_dev;
4328         }
4329
4330         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) && data->diag) {
4331                 if (!usb_driver_claim_interface(&btusb_driver,
4332                                                 data->diag, data))
4333                         __set_diag_interface(hdev);
4334                 else
4335                         data->diag = NULL;
4336         }
4337
4338         if (enable_autosuspend)
4339                 usb_enable_autosuspend(data->udev);
4340
4341         err = hci_register_dev(hdev);
4342         if (err < 0)
4343                 goto out_free_dev;
4344
4345         usb_set_intfdata(intf, data);
4346
4347         return 0;
4348
4349 out_free_dev:
4350         if (data->reset_gpio)
4351                 gpiod_put(data->reset_gpio);
4352         hci_free_dev(hdev);
4353         return err;
4354 }
4355
4356 static void btusb_disconnect(struct usb_interface *intf)
4357 {
4358         struct btusb_data *data = usb_get_intfdata(intf);
4359         struct hci_dev *hdev;
4360
4361         BT_DBG("intf %p", intf);
4362
4363         if (!data)
4364                 return;
4365
4366         hdev = data->hdev;
4367         usb_set_intfdata(data->intf, NULL);
4368
4369         if (data->isoc)
4370                 usb_set_intfdata(data->isoc, NULL);
4371
4372         if (data->diag)
4373                 usb_set_intfdata(data->diag, NULL);
4374
4375         hci_unregister_dev(hdev);
4376
4377         if (intf == data->intf) {
4378                 if (data->isoc)
4379                         usb_driver_release_interface(&btusb_driver, data->isoc);
4380                 if (data->diag)
4381                         usb_driver_release_interface(&btusb_driver, data->diag);
4382         } else if (intf == data->isoc) {
4383                 if (data->diag)
4384                         usb_driver_release_interface(&btusb_driver, data->diag);
4385                 usb_driver_release_interface(&btusb_driver, data->intf);
4386         } else if (intf == data->diag) {
4387                 usb_driver_release_interface(&btusb_driver, data->intf);
4388                 if (data->isoc)
4389                         usb_driver_release_interface(&btusb_driver, data->isoc);
4390         }
4391
4392         if (data->oob_wake_irq)
4393                 device_init_wakeup(&data->udev->dev, false);
4394
4395         if (data->reset_gpio)
4396                 gpiod_put(data->reset_gpio);
4397
4398         hci_free_dev(hdev);
4399 }
4400
4401 #ifdef CONFIG_PM
4402 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
4403 {
4404         struct btusb_data *data = usb_get_intfdata(intf);
4405
4406         BT_DBG("intf %p", intf);
4407
4408         if (data->suspend_count++)
4409                 return 0;
4410
4411         spin_lock_irq(&data->txlock);
4412         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
4413                 set_bit(BTUSB_SUSPENDING, &data->flags);
4414                 spin_unlock_irq(&data->txlock);
4415         } else {
4416                 spin_unlock_irq(&data->txlock);
4417                 data->suspend_count--;
4418                 return -EBUSY;
4419         }
4420
4421         cancel_work_sync(&data->work);
4422
4423         btusb_stop_traffic(data);
4424         usb_kill_anchored_urbs(&data->tx_anchor);
4425
4426         if (data->oob_wake_irq && device_may_wakeup(&data->udev->dev)) {
4427                 set_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
4428                 enable_irq_wake(data->oob_wake_irq);
4429                 enable_irq(data->oob_wake_irq);
4430         }
4431
4432         /* For global suspend, Realtek devices lose the loaded fw
4433          * in them. But for autosuspend, firmware should remain.
4434          * Actually, it depends on whether the usb host sends
4435          * set feature (enable wakeup) or not.
4436          */
4437         if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags)) {
4438                 if (PMSG_IS_AUTO(message) &&
4439                     device_can_wakeup(&data->udev->dev))
4440                         data->udev->do_remote_wakeup = 1;
4441                 else if (!PMSG_IS_AUTO(message))
4442                         data->udev->reset_resume = 1;
4443         }
4444
4445         return 0;
4446 }
4447
4448 static void play_deferred(struct btusb_data *data)
4449 {
4450         struct urb *urb;
4451         int err;
4452
4453         while ((urb = usb_get_from_anchor(&data->deferred))) {
4454                 usb_anchor_urb(urb, &data->tx_anchor);
4455
4456                 err = usb_submit_urb(urb, GFP_ATOMIC);
4457                 if (err < 0) {
4458                         if (err != -EPERM && err != -ENODEV)
4459                                 BT_ERR("%s urb %p submission failed (%d)",
4460                                        data->hdev->name, urb, -err);
4461                         kfree(urb->setup_packet);
4462                         usb_unanchor_urb(urb);
4463                         usb_free_urb(urb);
4464                         break;
4465                 }
4466
4467                 data->tx_in_flight++;
4468                 usb_free_urb(urb);
4469         }
4470
4471         /* Cleanup the rest deferred urbs. */
4472         while ((urb = usb_get_from_anchor(&data->deferred))) {
4473                 kfree(urb->setup_packet);
4474                 usb_free_urb(urb);
4475         }
4476 }
4477
4478 static int btusb_resume(struct usb_interface *intf)
4479 {
4480         struct btusb_data *data = usb_get_intfdata(intf);
4481         struct hci_dev *hdev = data->hdev;
4482         int err = 0;
4483
4484         BT_DBG("intf %p", intf);
4485
4486         if (--data->suspend_count)
4487                 return 0;
4488
4489         /* Disable only if not already disabled (keep it balanced) */
4490         if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
4491                 disable_irq(data->oob_wake_irq);
4492                 disable_irq_wake(data->oob_wake_irq);
4493         }
4494
4495         if (!test_bit(HCI_RUNNING, &hdev->flags))
4496                 goto done;
4497
4498         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
4499                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
4500                 if (err < 0) {
4501                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
4502                         goto failed;
4503                 }
4504         }
4505
4506         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
4507                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
4508                 if (err < 0) {
4509                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
4510                         goto failed;
4511                 }
4512
4513                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
4514         }
4515
4516         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
4517                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
4518                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
4519                 else
4520                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
4521         }
4522
4523         spin_lock_irq(&data->txlock);
4524         play_deferred(data);
4525         clear_bit(BTUSB_SUSPENDING, &data->flags);
4526         spin_unlock_irq(&data->txlock);
4527         schedule_work(&data->work);
4528
4529         return 0;
4530
4531 failed:
4532         usb_scuttle_anchored_urbs(&data->deferred);
4533 done:
4534         spin_lock_irq(&data->txlock);
4535         clear_bit(BTUSB_SUSPENDING, &data->flags);
4536         spin_unlock_irq(&data->txlock);
4537
4538         return err;
4539 }
4540 #endif
4541
4542 static struct usb_driver btusb_driver = {
4543         .name           = "btusb",
4544         .probe          = btusb_probe,
4545         .disconnect     = btusb_disconnect,
4546 #ifdef CONFIG_PM
4547         .suspend        = btusb_suspend,
4548         .resume         = btusb_resume,
4549 #endif
4550         .id_table       = btusb_table,
4551         .supports_autosuspend = 1,
4552         .disable_hub_initiated_lpm = 1,
4553 };
4554
4555 module_usb_driver(btusb_driver);
4556
4557 module_param(disable_scofix, bool, 0644);
4558 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
4559
4560 module_param(force_scofix, bool, 0644);
4561 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
4562
4563 module_param(enable_autosuspend, bool, 0644);
4564 MODULE_PARM_DESC(enable_autosuspend, "Enable USB autosuspend by default");
4565
4566 module_param(reset, bool, 0644);
4567 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
4568
4569 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
4570 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
4571 MODULE_VERSION(VERSION);
4572 MODULE_LICENSE("GPL");