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(0x0489, 0xe092), .driver_info = BTUSB_QCA_ROME |
 273                                                      BTUSB_WIDEBAND_SPEECH },
 274         { USB_DEVICE(0x0489, 0xe09f), .driver_info = BTUSB_QCA_ROME |
 275                                                      BTUSB_WIDEBAND_SPEECH },
 276         { USB_DEVICE(0x0489, 0xe0a2), .driver_info = BTUSB_QCA_ROME |
 277                                                      BTUSB_WIDEBAND_SPEECH },
 278         { USB_DEVICE(0x04ca, 0x3011), .driver_info = BTUSB_QCA_ROME |
 279                                                      BTUSB_WIDEBAND_SPEECH },
 280         { USB_DEVICE(0x04ca, 0x3015), .driver_info = BTUSB_QCA_ROME |
 281                                                      BTUSB_WIDEBAND_SPEECH },
 282         { USB_DEVICE(0x04ca, 0x3016), .driver_info = BTUSB_QCA_ROME |
 283                                                      BTUSB_WIDEBAND_SPEECH },
 284         { USB_DEVICE(0x04ca, 0x301a), .driver_info = BTUSB_QCA_ROME |
 285                                                      BTUSB_WIDEBAND_SPEECH },
 286         { USB_DEVICE(0x04ca, 0x3021), .driver_info = BTUSB_QCA_ROME |
 287                                                      BTUSB_WIDEBAND_SPEECH },
 288         { USB_DEVICE(0x13d3, 0x3491), .driver_info = BTUSB_QCA_ROME |
 289                                                      BTUSB_WIDEBAND_SPEECH },
 290         { USB_DEVICE(0x13d3, 0x3496), .driver_info = BTUSB_QCA_ROME |
 291                                                      BTUSB_WIDEBAND_SPEECH },
 292         { USB_DEVICE(0x13d3, 0x3501), .driver_info = BTUSB_QCA_ROME |
 293                                                      BTUSB_WIDEBAND_SPEECH },
 294
 295         /* QCA WCN6855 chipset */
 296         { USB_DEVICE(0x0cf3, 0xe600), .driver_info = BTUSB_QCA_WCN6855 |
 297                                                      BTUSB_WIDEBAND_SPEECH },
 298
 299         /* Broadcom BCM2035 */
 300         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 301         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 302         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 303
 304         /* Broadcom BCM2045 */
 305         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 306         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 307
 308         /* IBM/Lenovo ThinkPad with Broadcom chip */
 309         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 310         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 311
 312         /* HP laptop with Broadcom chip */
 313         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 314
 315         /* Dell laptop with Broadcom chip */
 316         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 317
 318         /* Dell Wireless 370 and 410 devices */
 319         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 320         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 321
 322         /* Belkin F8T012 and F8T013 devices */
 323         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 324         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 325
 326         /* Asus WL-BTD202 device */
 327         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 328
 329         /* Kensington Bluetooth USB adapter */
 330         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 331
 332         /* RTX Telecom based adapters with buggy SCO support */
 333         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 334         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 335
 336         /* CONWISE Technology based adapters with buggy SCO support */
 337         { USB_DEVICE(0x0e5e, 0x6622),
 338           .driver_info = BTUSB_BROKEN_ISOC | BTUSB_CW6622},
 339
 340         /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
 341         { USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE },
 342
 343         /* Digianswer devices */
 344         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 345         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 346
 347         /* CSR BlueCore Bluetooth Sniffer */
 348         { USB_DEVICE(0x0a12, 0x0002),
 349           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 350
 351         /* Frontline ComProbe Bluetooth Sniffer */
 352         { USB_DEVICE(0x16d3, 0x0002),
 353           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 354
 355         /* Marvell Bluetooth devices */
 356         { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
 357         { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
 358         { USB_DEVICE(0x1286, 0x204e), .driver_info = BTUSB_MARVELL },
 359
 360         /* Intel Bluetooth devices */
 361         { USB_DEVICE(0x8087, 0x0025), .driver_info = BTUSB_INTEL_NEW |
 362                                                      BTUSB_WIDEBAND_SPEECH |
 363                                                      BTUSB_VALID_LE_STATES },
 364         { USB_DEVICE(0x8087, 0x0026), .driver_info = BTUSB_INTEL_NEW |
 365                                                      BTUSB_WIDEBAND_SPEECH },
 366         { USB_DEVICE(0x8087, 0x0029), .driver_info = BTUSB_INTEL_NEW |
 367                                                      BTUSB_WIDEBAND_SPEECH },
 368         { USB_DEVICE(0x8087, 0x0032), .driver_info = BTUSB_INTEL_NEW |
 369                                                      BTUSB_WIDEBAND_SPEECH},
 370         { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR },
 371         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 372         { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
 373         { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_NEW |
 374                                                      BTUSB_WIDEBAND_SPEECH },
 375         { USB_DEVICE(0x8087, 0x0aa7), .driver_info = BTUSB_INTEL |
 376                                                      BTUSB_WIDEBAND_SPEECH },
 377         { USB_DEVICE(0x8087, 0x0aaa), .driver_info = BTUSB_INTEL_NEW |
 378                                                      BTUSB_WIDEBAND_SPEECH |
 379                                                      BTUSB_VALID_LE_STATES },
 380
 381         /* Other Intel Bluetooth devices */
 382         { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01),
 383           .driver_info = BTUSB_IGNORE },
 384
 385         /* Realtek 8822CE Bluetooth devices */
 386         { USB_DEVICE(0x0bda, 0xb00c), .driver_info = BTUSB_REALTEK |
 387                                                      BTUSB_WIDEBAND_SPEECH },
 388
 389         /* Realtek Bluetooth devices */
 390         { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01),
 391           .driver_info = BTUSB_REALTEK },
 392
 393         /* MediaTek Bluetooth devices */
 394         { USB_VENDOR_AND_INTERFACE_INFO(0x0e8d, 0xe0, 0x01, 0x01),
 395           .driver_info = BTUSB_MEDIATEK },
 396
 397         /* Additional Realtek 8723AE Bluetooth devices */
 398         { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK },
 399         { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK },
 400
 401         /* Additional Realtek 8723BE Bluetooth devices */
 402         { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK },
 403         { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK },
 404         { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
 405         { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
 406         { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },
 407         { USB_DEVICE(0x13d3, 0x3494), .driver_info = BTUSB_REALTEK },
 408
 409         /* Additional Realtek 8723BU Bluetooth devices */
 410         { USB_DEVICE(0x7392, 0xa611), .driver_info = BTUSB_REALTEK },
 411
 412         /* Additional Realtek 8723DE Bluetooth devices */
 413         { USB_DEVICE(0x0bda, 0xb009), .driver_info = BTUSB_REALTEK },
 414         { USB_DEVICE(0x2ff8, 0xb011), .driver_info = BTUSB_REALTEK },
 415
 416         /* Additional Realtek 8821AE Bluetooth devices */
 417         { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
 418         { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },
 419         { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK },
 420         { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK },
 421         { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK },
 422
 423         /* Additional Realtek 8822BE Bluetooth devices */
 424         { USB_DEVICE(0x13d3, 0x3526), .driver_info = BTUSB_REALTEK },
 425         { USB_DEVICE(0x0b05, 0x185c), .driver_info = BTUSB_REALTEK },
 426
 427         /* Additional Realtek 8822CE Bluetooth devices */
 428         { USB_DEVICE(0x04ca, 0x4005), .driver_info = BTUSB_REALTEK },
 429         { USB_DEVICE(0x13d3, 0x3548), .driver_info = BTUSB_REALTEK },
 430
 431         /* Silicon Wave based devices */
 432         { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE },
 433
 434         { }     /* Terminating entry */
 435 };
 436
 437 /* The Bluetooth USB module build into some devices needs to be reset on resume,
 438  * this is a problem with the platform (likely shutting off all power) not with
 439  * the module itself. So we use a DMI list to match known broken platforms.
 440  */
 441 static const struct dmi_system_id btusb_needs_reset_resume_table[] = {
 442         {
 443                 /* Dell OptiPlex 3060 (QCA ROME device 0cf3:e007) */
 444                 .matches = {
 445                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 446                         DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 3060"),
 447                 },
 448         },
 449         {
 450                 /* Dell XPS 9360 (QCA ROME device 0cf3:e300) */
 451                 .matches = {
 452                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 453                         DMI_MATCH(DMI_PRODUCT_NAME, "XPS 13 9360"),
 454                 },
 455         },
 456         {
 457                 /* Dell Inspiron 5565 (QCA ROME device 0cf3:e009) */
 458                 .matches = {
 459                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 460                         DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5565"),
 461                 },
 462         },
 463         {}
 464 };
 465
 466 #define BTUSB_MAX_ISOC_FRAMES   10
 467
 468 #define BTUSB_INTR_RUNNING      0
 469 #define BTUSB_BULK_RUNNING      1
 470 #define BTUSB_ISOC_RUNNING      2
 471 #define BTUSB_SUSPENDING        3
 472 #define BTUSB_DID_ISO_RESUME    4
 473 #define BTUSB_BOOTLOADER        5
 474 #define BTUSB_DOWNLOADING       6
 475 #define BTUSB_FIRMWARE_LOADED   7
 476 #define BTUSB_FIRMWARE_FAILED   8
 477 #define BTUSB_BOOTING           9
 478 #define BTUSB_DIAG_RUNNING      10
 479 #define BTUSB_OOB_WAKE_ENABLED  11
 480 #define BTUSB_HW_RESET_ACTIVE   12
 481 #define BTUSB_TX_WAIT_VND_EVT   13
 482 #define BTUSB_WAKEUP_DISABLE    14
 483 #define BTUSB_USE_ALT1_FOR_WBS  15
 484
 485 struct btusb_data {
 486         struct hci_dev       *hdev;
 487         struct usb_device    *udev;
 488         struct usb_interface *intf;
 489         struct usb_interface *isoc;
 490         struct usb_interface *diag;
 491         unsigned isoc_ifnum;
 492
 493         unsigned long flags;
 494
 495         struct work_struct work;
 496         struct work_struct waker;
 497
 498         struct usb_anchor deferred;
 499         struct usb_anchor tx_anchor;
 500         int tx_in_flight;
 501         spinlock_t txlock;
 502
 503         struct usb_anchor intr_anchor;
 504         struct usb_anchor bulk_anchor;
 505         struct usb_anchor isoc_anchor;
 506         struct usb_anchor diag_anchor;
 507         struct usb_anchor ctrl_anchor;
 508         spinlock_t rxlock;
 509
 510         struct sk_buff *evt_skb;
 511         struct sk_buff *acl_skb;
 512         struct sk_buff *sco_skb;
 513
 514         struct usb_endpoint_descriptor *intr_ep;
 515         struct usb_endpoint_descriptor *bulk_tx_ep;
 516         struct usb_endpoint_descriptor *bulk_rx_ep;
 517         struct usb_endpoint_descriptor *isoc_tx_ep;
 518         struct usb_endpoint_descriptor *isoc_rx_ep;
 519         struct usb_endpoint_descriptor *diag_tx_ep;
 520         struct usb_endpoint_descriptor *diag_rx_ep;
 521
 522         struct gpio_desc *reset_gpio;
 523
 524         __u8 cmdreq_type;
 525         __u8 cmdreq;
 526
 527         unsigned int sco_num;
 528         unsigned int air_mode;
 529         bool usb_alt6_packet_flow;
 530         int isoc_altsetting;
 531         int suspend_count;
 532
 533         int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
 534         int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
 535
 536         int (*setup_on_usb)(struct hci_dev *hdev);
 537
 538         int oob_wake_irq;   /* irq for out-of-band wake-on-bt */
 539         unsigned cmd_timeout_cnt;
 540 };
 541
 542 static void btusb_intel_cmd_timeout(struct hci_dev *hdev)
 543 {
 544         struct btusb_data *data = hci_get_drvdata(hdev);
 545         struct gpio_desc *reset_gpio = data->reset_gpio;
 546
 547         if (++data->cmd_timeout_cnt < 5)
 548                 return;
 549
 550         if (!reset_gpio) {
 551                 bt_dev_err(hdev, "No way to reset. Ignoring and continuing");
 552                 return;
 553         }
 554
 555         /*
 556          * Toggle the hard reset line if the platform provides one. The reset
 557          * is going to yank the device off the USB and then replug. So doing
 558          * once is enough. The cleanup is handled correctly on the way out
 559          * (standard USB disconnect), and the new device is detected cleanly
 560          * and bound to the driver again like it should be.
 561          */
 562         if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
 563                 bt_dev_err(hdev, "last reset failed? Not resetting again");
 564                 return;
 565         }
 566
 567         bt_dev_err(hdev, "Initiating HW reset via gpio");
 568         gpiod_set_value_cansleep(reset_gpio, 1);
 569         msleep(100);
 570         gpiod_set_value_cansleep(reset_gpio, 0);
 571 }
 572
 573 static void btusb_rtl_cmd_timeout(struct hci_dev *hdev)
 574 {
 575         struct btusb_data *data = hci_get_drvdata(hdev);
 576         struct gpio_desc *reset_gpio = data->reset_gpio;
 577
 578         if (++data->cmd_timeout_cnt < 5)
 579                 return;
 580
 581         if (!reset_gpio) {
 582                 bt_dev_err(hdev, "No gpio to reset Realtek device, ignoring");
 583                 return;
 584         }
 585
 586         /* Toggle the hard reset line. The Realtek device is going to
 587          * yank itself off the USB and then replug. The cleanup is handled
 588          * correctly on the way out (standard USB disconnect), and the new
 589          * device is detected cleanly and bound to the driver again like
 590          * it should be.
 591          */
 592         if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
 593                 bt_dev_err(hdev, "last reset failed? Not resetting again");
 594                 return;
 595         }
 596
 597         bt_dev_err(hdev, "Reset Realtek device via gpio");
 598         gpiod_set_value_cansleep(reset_gpio, 1);
 599         msleep(200);
 600         gpiod_set_value_cansleep(reset_gpio, 0);
 601 }
 602
 603 static void btusb_qca_cmd_timeout(struct hci_dev *hdev)
 604 {
 605         struct btusb_data *data = hci_get_drvdata(hdev);
 606         int err;
 607
 608         if (++data->cmd_timeout_cnt < 5)
 609                 return;
 610
 611         bt_dev_err(hdev, "Multiple cmd timeouts seen. Resetting usb device.");
 612         /* This is not an unbalanced PM reference since the device will reset */
 613         err = usb_autopm_get_interface(data->intf);
 614         if (!err)
 615                 usb_queue_reset_device(data->intf);
 616         else
 617                 bt_dev_err(hdev, "Failed usb_autopm_get_interface with %d", err);
 618 }
 619
 620 static inline void btusb_free_frags(struct btusb_data *data)
 621 {
 622         unsigned long flags;
 623
 624         spin_lock_irqsave(&data->rxlock, flags);
 625
 626         kfree_skb(data->evt_skb);
 627         data->evt_skb = NULL;
 628
 629         kfree_skb(data->acl_skb);
 630         data->acl_skb = NULL;
 631
 632         kfree_skb(data->sco_skb);
 633         data->sco_skb = NULL;
 634
 635         spin_unlock_irqrestore(&data->rxlock, flags);
 636 }
 637
 638 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
 639 {
 640         struct sk_buff *skb;
 641         unsigned long flags;
 642         int err = 0;
 643
 644         spin_lock_irqsave(&data->rxlock, flags);
 645         skb = data->evt_skb;
 646
 647         while (count) {
 648                 int len;
 649
 650                 if (!skb) {
 651                         skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
 652                         if (!skb) {
 653                                 err = -ENOMEM;
 654                                 break;
 655                         }
 656
 657                         hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
 658                         hci_skb_expect(skb) = HCI_EVENT_HDR_SIZE;
 659                 }
 660
 661                 len = min_t(uint, hci_skb_expect(skb), count);
 662                 skb_put_data(skb, buffer, len);
 663
 664                 count -= len;
 665                 buffer += len;
 666                 hci_skb_expect(skb) -= len;
 667
 668                 if (skb->len == HCI_EVENT_HDR_SIZE) {
 669                         /* Complete event header */
 670                         hci_skb_expect(skb) = hci_event_hdr(skb)->plen;
 671
 672                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 673                                 kfree_skb(skb);
 674                                 skb = NULL;
 675
 676                                 err = -EILSEQ;
 677                                 break;
 678                         }
 679                 }
 680
 681                 if (!hci_skb_expect(skb)) {
 682                         /* Complete frame */
 683                         data->recv_event(data->hdev, skb);
 684                         skb = NULL;
 685                 }
 686         }
 687
 688         data->evt_skb = skb;
 689         spin_unlock_irqrestore(&data->rxlock, flags);
 690
 691         return err;
 692 }
 693
 694 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
 695 {
 696         struct sk_buff *skb;
 697         unsigned long flags;
 698         int err = 0;
 699
 700         spin_lock_irqsave(&data->rxlock, flags);
 701         skb = data->acl_skb;
 702
 703         while (count) {
 704                 int len;
 705
 706                 if (!skb) {
 707                         skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
 708                         if (!skb) {
 709                                 err = -ENOMEM;
 710                                 break;
 711                         }
 712
 713                         hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT;
 714                         hci_skb_expect(skb) = HCI_ACL_HDR_SIZE;
 715                 }
 716
 717                 len = min_t(uint, hci_skb_expect(skb), count);
 718                 skb_put_data(skb, buffer, len);
 719
 720                 count -= len;
 721                 buffer += len;
 722                 hci_skb_expect(skb) -= len;
 723
 724                 if (skb->len == HCI_ACL_HDR_SIZE) {
 725                         __le16 dlen = hci_acl_hdr(skb)->dlen;
 726
 727                         /* Complete ACL header */
 728                         hci_skb_expect(skb) = __le16_to_cpu(dlen);
 729
 730                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 731                                 kfree_skb(skb);
 732                                 skb = NULL;
 733
 734                                 err = -EILSEQ;
 735                                 break;
 736                         }
 737                 }
 738
 739                 if (!hci_skb_expect(skb)) {
 740                         /* Complete frame */
 741                         hci_recv_frame(data->hdev, skb);
 742                         skb = NULL;
 743                 }
 744         }
 745
 746         data->acl_skb = skb;
 747         spin_unlock_irqrestore(&data->rxlock, flags);
 748
 749         return err;
 750 }
 751
 752 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
 753 {
 754         struct sk_buff *skb;
 755         unsigned long flags;
 756         int err = 0;
 757
 758         spin_lock_irqsave(&data->rxlock, flags);
 759         skb = data->sco_skb;
 760
 761         while (count) {
 762                 int len;
 763
 764                 if (!skb) {
 765                         skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
 766                         if (!skb) {
 767                                 err = -ENOMEM;
 768                                 break;
 769                         }
 770
 771                         hci_skb_pkt_type(skb) = HCI_SCODATA_PKT;
 772                         hci_skb_expect(skb) = HCI_SCO_HDR_SIZE;
 773                 }
 774
 775                 len = min_t(uint, hci_skb_expect(skb), count);
 776                 skb_put_data(skb, buffer, len);
 777
 778                 count -= len;
 779                 buffer += len;
 780                 hci_skb_expect(skb) -= len;
 781
 782                 if (skb->len == HCI_SCO_HDR_SIZE) {
 783                         /* Complete SCO header */
 784                         hci_skb_expect(skb) = hci_sco_hdr(skb)->dlen;
 785
 786                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 787                                 kfree_skb(skb);
 788                                 skb = NULL;
 789
 790                                 err = -EILSEQ;
 791                                 break;
 792                         }
 793                 }
 794
 795                 if (!hci_skb_expect(skb)) {
 796                         /* Complete frame */
 797                         hci_recv_frame(data->hdev, skb);
 798                         skb = NULL;
 799                 }
 800         }
 801
 802         data->sco_skb = skb;
 803         spin_unlock_irqrestore(&data->rxlock, flags);
 804
 805         return err;
 806 }
 807
 808 static void btusb_intr_complete(struct urb *urb)
 809 {
 810         struct hci_dev *hdev = urb->context;
 811         struct btusb_data *data = hci_get_drvdata(hdev);
 812         int err;
 813
 814         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 815                urb->actual_length);
 816
 817         if (!test_bit(HCI_RUNNING, &hdev->flags))
 818                 return;
 819
 820         if (urb->status == 0) {
 821                 hdev->stat.byte_rx += urb->actual_length;
 822
 823                 if (btusb_recv_intr(data, urb->transfer_buffer,
 824                                     urb->actual_length) < 0) {
 825                         bt_dev_err(hdev, "corrupted event packet");
 826                         hdev->stat.err_rx++;
 827                 }
 828         } else if (urb->status == -ENOENT) {
 829                 /* Avoid suspend failed when usb_kill_urb */
 830                 return;
 831         }
 832
 833         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 834                 return;
 835
 836         usb_mark_last_busy(data->udev);
 837         usb_anchor_urb(urb, &data->intr_anchor);
 838
 839         err = usb_submit_urb(urb, GFP_ATOMIC);
 840         if (err < 0) {
 841                 /* -EPERM: urb is being killed;
 842                  * -ENODEV: device got disconnected
 843                  */
 844                 if (err != -EPERM && err != -ENODEV)
 845                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
 846                                    urb, -err);
 847                 usb_unanchor_urb(urb);
 848         }
 849 }
 850
 851 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 852 {
 853         struct btusb_data *data = hci_get_drvdata(hdev);
 854         struct urb *urb;
 855         unsigned char *buf;
 856         unsigned int pipe;
 857         int err, size;
 858
 859         BT_DBG("%s", hdev->name);
 860
 861         if (!data->intr_ep)
 862                 return -ENODEV;
 863
 864         urb = usb_alloc_urb(0, mem_flags);
 865         if (!urb)
 866                 return -ENOMEM;
 867
 868         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 869
 870         buf = kmalloc(size, mem_flags);
 871         if (!buf) {
 872                 usb_free_urb(urb);
 873                 return -ENOMEM;
 874         }
 875
 876         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 877
 878         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 879                          btusb_intr_complete, hdev, data->intr_ep->bInterval);
 880
 881         urb->transfer_flags |= URB_FREE_BUFFER;
 882
 883         usb_anchor_urb(urb, &data->intr_anchor);
 884
 885         err = usb_submit_urb(urb, mem_flags);
 886         if (err < 0) {
 887                 if (err != -EPERM && err != -ENODEV)
 888                         bt_dev_err(hdev, "urb %p submission failed (%d)",
 889                                    urb, -err);
 890                 usb_unanchor_urb(urb);
 891         }
 892
 893         usb_free_urb(urb);
 894
 895         return err;
 896 }
 897
 898 static void btusb_bulk_complete(struct urb *urb)
 899 {
 900         struct hci_dev *hdev = urb->context;
 901         struct btusb_data *data = hci_get_drvdata(hdev);
 902         int err;
 903
 904         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 905                urb->actual_length);
 906
 907         if (!test_bit(HCI_RUNNING, &hdev->flags))
 908                 return;
 909
 910         if (urb->status == 0) {
 911                 hdev->stat.byte_rx += urb->actual_length;
 912
 913                 if (data->recv_bulk(data, urb->transfer_buffer,
 914                                     urb->actual_length) < 0) {
 915                         bt_dev_err(hdev, "corrupted ACL packet");
 916                         hdev->stat.err_rx++;
 917                 }
 918         } else if (urb->status == -ENOENT) {
 919                 /* Avoid suspend failed when usb_kill_urb */
 920                 return;
 921         }
 922
 923         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 924                 return;
 925
 926         usb_anchor_urb(urb, &data->bulk_anchor);
 927         usb_mark_last_busy(data->udev);
 928
 929         err = usb_submit_urb(urb, GFP_ATOMIC);
 930         if (err < 0) {
 931                 /* -EPERM: urb is being killed;
 932                  * -ENODEV: device got disconnected
 933                  */
 934                 if (err != -EPERM && err != -ENODEV)
 935                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
 936                                    urb, -err);
 937                 usb_unanchor_urb(urb);
 938         }
 939 }
 940
 941 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 942 {
 943         struct btusb_data *data = hci_get_drvdata(hdev);
 944         struct urb *urb;
 945         unsigned char *buf;
 946         unsigned int pipe;
 947         int err, size = HCI_MAX_FRAME_SIZE;
 948
 949         BT_DBG("%s", hdev->name);
 950
 951         if (!data->bulk_rx_ep)
 952                 return -ENODEV;
 953
 954         urb = usb_alloc_urb(0, mem_flags);
 955         if (!urb)
 956                 return -ENOMEM;
 957
 958         buf = kmalloc(size, mem_flags);
 959         if (!buf) {
 960                 usb_free_urb(urb);
 961                 return -ENOMEM;
 962         }
 963
 964         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 965
 966         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
 967                           btusb_bulk_complete, hdev);
 968
 969         urb->transfer_flags |= URB_FREE_BUFFER;
 970
 971         usb_mark_last_busy(data->udev);
 972         usb_anchor_urb(urb, &data->bulk_anchor);
 973
 974         err = usb_submit_urb(urb, mem_flags);
 975         if (err < 0) {
 976                 if (err != -EPERM && err != -ENODEV)
 977                         bt_dev_err(hdev, "urb %p submission failed (%d)",
 978                                    urb, -err);
 979                 usb_unanchor_urb(urb);
 980         }
 981
 982         usb_free_urb(urb);
 983
 984         return err;
 985 }
 986
 987 static void btusb_isoc_complete(struct urb *urb)
 988 {
 989         struct hci_dev *hdev = urb->context;
 990         struct btusb_data *data = hci_get_drvdata(hdev);
 991         int i, err;
 992
 993         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 994                urb->actual_length);
 995
 996         if (!test_bit(HCI_RUNNING, &hdev->flags))
 997                 return;
 998
 999         if (urb->status == 0) {
1000                 for (i = 0; i < urb->number_of_packets; i++) {
1001                         unsigned int offset = urb->iso_frame_desc[i].offset;
1002                         unsigned int length = urb->iso_frame_desc[i].actual_length;
1003
1004                         if (urb->iso_frame_desc[i].status)
1005                                 continue;
1006
1007                         hdev->stat.byte_rx += length;
1008
1009                         if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
1010                                             length) < 0) {
1011                                 bt_dev_err(hdev, "corrupted SCO packet");
1012                                 hdev->stat.err_rx++;
1013                         }
1014                 }
1015         } else if (urb->status == -ENOENT) {
1016                 /* Avoid suspend failed when usb_kill_urb */
1017                 return;
1018         }
1019
1020         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
1021                 return;
1022
1023         usb_anchor_urb(urb, &data->isoc_anchor);
1024
1025         err = usb_submit_urb(urb, GFP_ATOMIC);
1026         if (err < 0) {
1027                 /* -EPERM: urb is being killed;
1028                  * -ENODEV: device got disconnected
1029                  */
1030                 if (err != -EPERM && err != -ENODEV)
1031                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1032                                    urb, -err);
1033                 usb_unanchor_urb(urb);
1034         }
1035 }
1036
1037 static inline void __fill_isoc_descriptor_msbc(struct urb *urb, int len,
1038                                                int mtu, struct btusb_data *data)
1039 {
1040         int i, offset = 0;
1041         unsigned int interval;
1042
1043         BT_DBG("len %d mtu %d", len, mtu);
1044
1045         /* For mSBC ALT 6 setting the host will send the packet at continuous
1046          * flow. As per core spec 5, vol 4, part B, table 2.1. For ALT setting
1047          * 6 the HCI PACKET INTERVAL should be 7.5ms for every usb packets.
1048          * To maintain the rate we send 63bytes of usb packets alternatively for
1049          * 7ms and 8ms to maintain the rate as 7.5ms.
1050          */
1051         if (data->usb_alt6_packet_flow) {
1052                 interval = 7;
1053                 data->usb_alt6_packet_flow = false;
1054         } else {
1055                 interval = 6;
1056                 data->usb_alt6_packet_flow = true;
1057         }
1058
1059         for (i = 0; i < interval; i++) {
1060                 urb->iso_frame_desc[i].offset = offset;
1061                 urb->iso_frame_desc[i].length = offset;
1062         }
1063
1064         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
1065                 urb->iso_frame_desc[i].offset = offset;
1066                 urb->iso_frame_desc[i].length = len;
1067                 i++;
1068         }
1069
1070         urb->number_of_packets = i;
1071 }
1072
1073 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
1074 {
1075         int i, offset = 0;
1076
1077         BT_DBG("len %d mtu %d", len, mtu);
1078
1079         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
1080                                         i++, offset += mtu, len -= mtu) {
1081                 urb->iso_frame_desc[i].offset = offset;
1082                 urb->iso_frame_desc[i].length = mtu;
1083         }
1084
1085         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
1086                 urb->iso_frame_desc[i].offset = offset;
1087                 urb->iso_frame_desc[i].length = len;
1088                 i++;
1089         }
1090
1091         urb->number_of_packets = i;
1092 }
1093
1094 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
1095 {
1096         struct btusb_data *data = hci_get_drvdata(hdev);
1097         struct urb *urb;
1098         unsigned char *buf;
1099         unsigned int pipe;
1100         int err, size;
1101
1102         BT_DBG("%s", hdev->name);
1103
1104         if (!data->isoc_rx_ep)
1105                 return -ENODEV;
1106
1107         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
1108         if (!urb)
1109                 return -ENOMEM;
1110
1111         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
1112                                                 BTUSB_MAX_ISOC_FRAMES;
1113
1114         buf = kmalloc(size, mem_flags);
1115         if (!buf) {
1116                 usb_free_urb(urb);
1117                 return -ENOMEM;
1118         }
1119
1120         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
1121
1122         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
1123                          hdev, data->isoc_rx_ep->bInterval);
1124
1125         urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
1126
1127         __fill_isoc_descriptor(urb, size,
1128                                le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
1129
1130         usb_anchor_urb(urb, &data->isoc_anchor);
1131
1132         err = usb_submit_urb(urb, mem_flags);
1133         if (err < 0) {
1134                 if (err != -EPERM && err != -ENODEV)
1135                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1136                                    urb, -err);
1137                 usb_unanchor_urb(urb);
1138         }
1139
1140         usb_free_urb(urb);
1141
1142         return err;
1143 }
1144
1145 static void btusb_diag_complete(struct urb *urb)
1146 {
1147         struct hci_dev *hdev = urb->context;
1148         struct btusb_data *data = hci_get_drvdata(hdev);
1149         int err;
1150
1151         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1152                urb->actual_length);
1153
1154         if (urb->status == 0) {
1155                 struct sk_buff *skb;
1156
1157                 skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC);
1158                 if (skb) {
1159                         skb_put_data(skb, urb->transfer_buffer,
1160                                      urb->actual_length);
1161                         hci_recv_diag(hdev, skb);
1162                 }
1163         } else if (urb->status == -ENOENT) {
1164                 /* Avoid suspend failed when usb_kill_urb */
1165                 return;
1166         }
1167
1168         if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags))
1169                 return;
1170
1171         usb_anchor_urb(urb, &data->diag_anchor);
1172         usb_mark_last_busy(data->udev);
1173
1174         err = usb_submit_urb(urb, GFP_ATOMIC);
1175         if (err < 0) {
1176                 /* -EPERM: urb is being killed;
1177                  * -ENODEV: device got disconnected
1178                  */
1179                 if (err != -EPERM && err != -ENODEV)
1180                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1181                                    urb, -err);
1182                 usb_unanchor_urb(urb);
1183         }
1184 }
1185
1186 static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags)
1187 {
1188         struct btusb_data *data = hci_get_drvdata(hdev);
1189         struct urb *urb;
1190         unsigned char *buf;
1191         unsigned int pipe;
1192         int err, size = HCI_MAX_FRAME_SIZE;
1193
1194         BT_DBG("%s", hdev->name);
1195
1196         if (!data->diag_rx_ep)
1197                 return -ENODEV;
1198
1199         urb = usb_alloc_urb(0, mem_flags);
1200         if (!urb)
1201                 return -ENOMEM;
1202
1203         buf = kmalloc(size, mem_flags);
1204         if (!buf) {
1205                 usb_free_urb(urb);
1206                 return -ENOMEM;
1207         }
1208
1209         pipe = usb_rcvbulkpipe(data->udev, data->diag_rx_ep->bEndpointAddress);
1210
1211         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
1212                           btusb_diag_complete, hdev);
1213
1214         urb->transfer_flags |= URB_FREE_BUFFER;
1215
1216         usb_mark_last_busy(data->udev);
1217         usb_anchor_urb(urb, &data->diag_anchor);
1218
1219         err = usb_submit_urb(urb, mem_flags);
1220         if (err < 0) {
1221                 if (err != -EPERM && err != -ENODEV)
1222                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1223                                    urb, -err);
1224                 usb_unanchor_urb(urb);
1225         }
1226
1227         usb_free_urb(urb);
1228
1229         return err;
1230 }
1231
1232 static void btusb_tx_complete(struct urb *urb)
1233 {
1234         struct sk_buff *skb = urb->context;
1235         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1236         struct btusb_data *data = hci_get_drvdata(hdev);
1237         unsigned long flags;
1238
1239         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1240                urb->actual_length);
1241
1242         if (!test_bit(HCI_RUNNING, &hdev->flags))
1243                 goto done;
1244
1245         if (!urb->status)
1246                 hdev->stat.byte_tx += urb->transfer_buffer_length;
1247         else
1248                 hdev->stat.err_tx++;
1249
1250 done:
1251         spin_lock_irqsave(&data->txlock, flags);
1252         data->tx_in_flight--;
1253         spin_unlock_irqrestore(&data->txlock, flags);
1254
1255         kfree(urb->setup_packet);
1256
1257         kfree_skb(skb);
1258 }
1259
1260 static void btusb_isoc_tx_complete(struct urb *urb)
1261 {
1262         struct sk_buff *skb = urb->context;
1263         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1264
1265         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1266                urb->actual_length);
1267
1268         if (!test_bit(HCI_RUNNING, &hdev->flags))
1269                 goto done;
1270
1271         if (!urb->status)
1272                 hdev->stat.byte_tx += urb->transfer_buffer_length;
1273         else
1274                 hdev->stat.err_tx++;
1275
1276 done:
1277         kfree(urb->setup_packet);
1278
1279         kfree_skb(skb);
1280 }
1281
1282 static int btusb_open(struct hci_dev *hdev)
1283 {
1284         struct btusb_data *data = hci_get_drvdata(hdev);
1285         int err;
1286
1287         BT_DBG("%s", hdev->name);
1288
1289         err = usb_autopm_get_interface(data->intf);
1290         if (err < 0)
1291                 return err;
1292
1293         /* Patching USB firmware files prior to starting any URBs of HCI path
1294          * It is more safe to use USB bulk channel for downloading USB patch
1295          */
1296         if (data->setup_on_usb) {
1297                 err = data->setup_on_usb(hdev);
1298                 if (err < 0)
1299                         goto setup_fail;
1300         }
1301
1302         data->intf->needs_remote_wakeup = 1;
1303
1304         /* Disable device remote wakeup when host is suspended
1305          * For Realtek chips, global suspend without
1306          * SET_FEATURE (DEVICE_REMOTE_WAKEUP) can save more power in device.
1307          */
1308         if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags))
1309                 device_wakeup_disable(&data->udev->dev);
1310
1311         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
1312                 goto done;
1313
1314         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
1315         if (err < 0)
1316                 goto failed;
1317
1318         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1319         if (err < 0) {
1320                 usb_kill_anchored_urbs(&data->intr_anchor);
1321                 goto failed;
1322         }
1323
1324         set_bit(BTUSB_BULK_RUNNING, &data->flags);
1325         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1326
1327         if (data->diag) {
1328                 if (!btusb_submit_diag_urb(hdev, GFP_KERNEL))
1329                         set_bit(BTUSB_DIAG_RUNNING, &data->flags);
1330         }
1331
1332 done:
1333         usb_autopm_put_interface(data->intf);
1334         return 0;
1335
1336 failed:
1337         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1338 setup_fail:
1339         usb_autopm_put_interface(data->intf);
1340         return err;
1341 }
1342
1343 static void btusb_stop_traffic(struct btusb_data *data)
1344 {
1345         usb_kill_anchored_urbs(&data->intr_anchor);
1346         usb_kill_anchored_urbs(&data->bulk_anchor);
1347         usb_kill_anchored_urbs(&data->isoc_anchor);
1348         usb_kill_anchored_urbs(&data->diag_anchor);
1349         usb_kill_anchored_urbs(&data->ctrl_anchor);
1350 }
1351
1352 static int btusb_close(struct hci_dev *hdev)
1353 {
1354         struct btusb_data *data = hci_get_drvdata(hdev);
1355         int err;
1356
1357         BT_DBG("%s", hdev->name);
1358
1359         cancel_work_sync(&data->work);
1360         cancel_work_sync(&data->waker);
1361
1362         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1363         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1364         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1365         clear_bit(BTUSB_DIAG_RUNNING, &data->flags);
1366
1367         btusb_stop_traffic(data);
1368         btusb_free_frags(data);
1369
1370         err = usb_autopm_get_interface(data->intf);
1371         if (err < 0)
1372                 goto failed;
1373
1374         data->intf->needs_remote_wakeup = 0;
1375
1376         /* Enable remote wake up for auto-suspend */
1377         if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags))
1378                 data->intf->needs_remote_wakeup = 1;
1379
1380         usb_autopm_put_interface(data->intf);
1381
1382 failed:
1383         usb_scuttle_anchored_urbs(&data->deferred);
1384         return 0;
1385 }
1386
1387 static int btusb_flush(struct hci_dev *hdev)
1388 {
1389         struct btusb_data *data = hci_get_drvdata(hdev);
1390
1391         BT_DBG("%s", hdev->name);
1392
1393         usb_kill_anchored_urbs(&data->tx_anchor);
1394         btusb_free_frags(data);
1395
1396         return 0;
1397 }
1398
1399 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
1400 {
1401         struct btusb_data *data = hci_get_drvdata(hdev);
1402         struct usb_ctrlrequest *dr;
1403         struct urb *urb;
1404         unsigned int pipe;
1405
1406         urb = usb_alloc_urb(0, GFP_KERNEL);
1407         if (!urb)
1408                 return ERR_PTR(-ENOMEM);
1409
1410         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
1411         if (!dr) {
1412                 usb_free_urb(urb);
1413                 return ERR_PTR(-ENOMEM);
1414         }
1415
1416         dr->bRequestType = data->cmdreq_type;
1417         dr->bRequest     = data->cmdreq;
1418         dr->wIndex       = 0;
1419         dr->wValue       = 0;
1420         dr->wLength      = __cpu_to_le16(skb->len);
1421
1422         pipe = usb_sndctrlpipe(data->udev, 0x00);
1423
1424         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
1425                              skb->data, skb->len, btusb_tx_complete, skb);
1426
1427         skb->dev = (void *)hdev;
1428
1429         return urb;
1430 }
1431
1432 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
1433 {
1434         struct btusb_data *data = hci_get_drvdata(hdev);
1435         struct urb *urb;
1436         unsigned int pipe;
1437
1438         if (!data->bulk_tx_ep)
1439                 return ERR_PTR(-ENODEV);
1440
1441         urb = usb_alloc_urb(0, GFP_KERNEL);
1442         if (!urb)
1443                 return ERR_PTR(-ENOMEM);
1444
1445         pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1446
1447         usb_fill_bulk_urb(urb, data->udev, pipe,
1448                           skb->data, skb->len, btusb_tx_complete, skb);
1449
1450         skb->dev = (void *)hdev;
1451
1452         return urb;
1453 }
1454
1455 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1456 {
1457         struct btusb_data *data = hci_get_drvdata(hdev);
1458         struct urb *urb;
1459         unsigned int pipe;
1460
1461         if (!data->isoc_tx_ep)
1462                 return ERR_PTR(-ENODEV);
1463
1464         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1465         if (!urb)
1466                 return ERR_PTR(-ENOMEM);
1467
1468         pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1469
1470         usb_fill_int_urb(urb, data->udev, pipe,
1471                          skb->data, skb->len, btusb_isoc_tx_complete,
1472                          skb, data->isoc_tx_ep->bInterval);
1473
1474         urb->transfer_flags  = URB_ISO_ASAP;
1475
1476         if (data->isoc_altsetting == 6)
1477                 __fill_isoc_descriptor_msbc(urb, skb->len,
1478                                             le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize),
1479                                             data);
1480         else
1481                 __fill_isoc_descriptor(urb, skb->len,
1482                                        le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1483         skb->dev = (void *)hdev;
1484
1485         return urb;
1486 }
1487
1488 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1489 {
1490         struct btusb_data *data = hci_get_drvdata(hdev);
1491         int err;
1492
1493         usb_anchor_urb(urb, &data->tx_anchor);
1494
1495         err = usb_submit_urb(urb, GFP_KERNEL);
1496         if (err < 0) {
1497                 if (err != -EPERM && err != -ENODEV)
1498                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1499                                    urb, -err);
1500                 kfree(urb->setup_packet);
1501                 usb_unanchor_urb(urb);
1502         } else {
1503                 usb_mark_last_busy(data->udev);
1504         }
1505
1506         usb_free_urb(urb);
1507         return err;
1508 }
1509
1510 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1511 {
1512         struct btusb_data *data = hci_get_drvdata(hdev);
1513         unsigned long flags;
1514         bool suspending;
1515
1516         spin_lock_irqsave(&data->txlock, flags);
1517         suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1518         if (!suspending)
1519                 data->tx_in_flight++;
1520         spin_unlock_irqrestore(&data->txlock, flags);
1521
1522         if (!suspending)
1523                 return submit_tx_urb(hdev, urb);
1524
1525         usb_anchor_urb(urb, &data->deferred);
1526         schedule_work(&data->waker);
1527
1528         usb_free_urb(urb);
1529         return 0;
1530 }
1531
1532 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1533 {
1534         struct urb *urb;
1535
1536         BT_DBG("%s", hdev->name);
1537
1538         switch (hci_skb_pkt_type(skb)) {
1539         case HCI_COMMAND_PKT:
1540                 urb = alloc_ctrl_urb(hdev, skb);
1541                 if (IS_ERR(urb))
1542                         return PTR_ERR(urb);
1543
1544                 hdev->stat.cmd_tx++;
1545                 return submit_or_queue_tx_urb(hdev, urb);
1546
1547         case HCI_ACLDATA_PKT:
1548                 urb = alloc_bulk_urb(hdev, skb);
1549                 if (IS_ERR(urb))
1550                         return PTR_ERR(urb);
1551
1552                 hdev->stat.acl_tx++;
1553                 return submit_or_queue_tx_urb(hdev, urb);
1554
1555         case HCI_SCODATA_PKT:
1556                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1557                         return -ENODEV;
1558
1559                 urb = alloc_isoc_urb(hdev, skb);
1560                 if (IS_ERR(urb))
1561                         return PTR_ERR(urb);
1562
1563                 hdev->stat.sco_tx++;
1564                 return submit_tx_urb(hdev, urb);
1565         }
1566
1567         return -EILSEQ;
1568 }
1569
1570 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1571 {
1572         struct btusb_data *data = hci_get_drvdata(hdev);
1573
1574         BT_DBG("%s evt %d", hdev->name, evt);
1575
1576         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1577                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1578                 data->air_mode = evt;
1579                 schedule_work(&data->work);
1580         }
1581 }
1582
1583 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1584 {
1585         struct btusb_data *data = hci_get_drvdata(hdev);
1586         struct usb_interface *intf = data->isoc;
1587         struct usb_endpoint_descriptor *ep_desc;
1588         int i, err;
1589
1590         if (!data->isoc)
1591                 return -ENODEV;
1592
1593         err = usb_set_interface(data->udev, data->isoc_ifnum, altsetting);
1594         if (err < 0) {
1595                 bt_dev_err(hdev, "setting interface failed (%d)", -err);
1596                 return err;
1597         }
1598
1599         data->isoc_altsetting = altsetting;
1600
1601         data->isoc_tx_ep = NULL;
1602         data->isoc_rx_ep = NULL;
1603
1604         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1605                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1606
1607                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1608                         data->isoc_tx_ep = ep_desc;
1609                         continue;
1610                 }
1611
1612                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1613                         data->isoc_rx_ep = ep_desc;
1614                         continue;
1615                 }
1616         }
1617
1618         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1619                 bt_dev_err(hdev, "invalid SCO descriptors");
1620                 return -ENODEV;
1621         }
1622
1623         return 0;
1624 }
1625
1626 static int btusb_switch_alt_setting(struct hci_dev *hdev, int new_alts)
1627 {
1628         struct btusb_data *data = hci_get_drvdata(hdev);
1629         int err;
1630
1631         if (data->isoc_altsetting != new_alts) {
1632                 unsigned long flags;
1633
1634                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1635                 usb_kill_anchored_urbs(&data->isoc_anchor);
1636
1637                 /* When isochronous alternate setting needs to be
1638                  * changed, because SCO connection has been added
1639                  * or removed, a packet fragment may be left in the
1640                  * reassembling state. This could lead to wrongly
1641                  * assembled fragments.
1642                  *
1643                  * Clear outstanding fragment when selecting a new
1644                  * alternate setting.
1645                  */
1646                 spin_lock_irqsave(&data->rxlock, flags);
1647                 kfree_skb(data->sco_skb);
1648                 data->sco_skb = NULL;
1649                 spin_unlock_irqrestore(&data->rxlock, flags);
1650
1651                 err = __set_isoc_interface(hdev, new_alts);
1652                 if (err < 0)
1653                         return err;
1654         }
1655
1656         if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1657                 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1658                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1659                 else
1660                         btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1661         }
1662
1663         return 0;
1664 }
1665
1666 static struct usb_host_interface *btusb_find_altsetting(struct btusb_data *data,
1667                                                         int alt)
1668 {
1669         struct usb_interface *intf = data->isoc;
1670         int i;
1671
1672         BT_DBG("Looking for Alt no :%d", alt);
1673
1674         if (!intf)
1675                 return NULL;
1676
1677         for (i = 0; i < intf->num_altsetting; i++) {
1678                 if (intf->altsetting[i].desc.bAlternateSetting == alt)
1679                         return &intf->altsetting[i];
1680         }
1681
1682         return NULL;
1683 }
1684
1685 static void btusb_work(struct work_struct *work)
1686 {
1687         struct btusb_data *data = container_of(work, struct btusb_data, work);
1688         struct hci_dev *hdev = data->hdev;
1689         int new_alts = 0;
1690         int err;
1691
1692         if (data->sco_num > 0) {
1693                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1694                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1695                         if (err < 0) {
1696                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1697                                 usb_kill_anchored_urbs(&data->isoc_anchor);
1698                                 return;
1699                         }
1700
1701                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1702                 }
1703
1704                 if (data->air_mode == HCI_NOTIFY_ENABLE_SCO_CVSD) {
1705                         if (hdev->voice_setting & 0x0020) {
1706                                 static const int alts[3] = { 2, 4, 5 };
1707
1708                                 new_alts = alts[data->sco_num - 1];
1709                         } else {
1710                                 new_alts = data->sco_num;
1711                         }
1712                 } else if (data->air_mode == HCI_NOTIFY_ENABLE_SCO_TRANSP) {
1713                         /* Check if Alt 6 is supported for Transparent audio */
1714                         if (btusb_find_altsetting(data, 6)) {
1715                                 data->usb_alt6_packet_flow = true;
1716                                 new_alts = 6;
1717                         } else if (test_bit(BTUSB_USE_ALT1_FOR_WBS, &data->flags)) {
1718                                 new_alts = 1;
1719                         } else {
1720                                 bt_dev_err(hdev, "Device does not support ALT setting 6");
1721                         }
1722                 }
1723
1724                 if (btusb_switch_alt_setting(hdev, new_alts) < 0)
1725                         bt_dev_err(hdev, "set USB alt:(%d) failed!", new_alts);
1726         } else {
1727                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1728                 usb_kill_anchored_urbs(&data->isoc_anchor);
1729
1730                 __set_isoc_interface(hdev, 0);
1731                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1732                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1733         }
1734 }
1735
1736 static void btusb_waker(struct work_struct *work)
1737 {
1738         struct btusb_data *data = container_of(work, struct btusb_data, waker);
1739         int err;
1740
1741         err = usb_autopm_get_interface(data->intf);
1742         if (err < 0)
1743                 return;
1744
1745         usb_autopm_put_interface(data->intf);
1746 }
1747
1748 static int btusb_setup_bcm92035(struct hci_dev *hdev)
1749 {
1750         struct sk_buff *skb;
1751         u8 val = 0x00;
1752
1753         BT_DBG("%s", hdev->name);
1754
1755         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1756         if (IS_ERR(skb))
1757                 bt_dev_err(hdev, "BCM92035 command failed (%ld)", PTR_ERR(skb));
1758         else
1759                 kfree_skb(skb);
1760
1761         return 0;
1762 }
1763
1764 static int btusb_setup_csr(struct hci_dev *hdev)
1765 {
1766         struct hci_rp_read_local_version *rp;
1767         struct sk_buff *skb;
1768         bool is_fake = false;
1769
1770         BT_DBG("%s", hdev->name);
1771
1772         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1773                              HCI_INIT_TIMEOUT);
1774         if (IS_ERR(skb)) {
1775                 int err = PTR_ERR(skb);
1776                 bt_dev_err(hdev, "CSR: Local version failed (%d)", err);
1777                 return err;
1778         }
1779
1780         if (skb->len != sizeof(struct hci_rp_read_local_version)) {
1781                 bt_dev_err(hdev, "CSR: Local version length mismatch");
1782                 kfree_skb(skb);
1783                 return -EIO;
1784         }
1785
1786         rp = (struct hci_rp_read_local_version *)skb->data;
1787
1788         /* Detect a wide host of Chinese controllers that aren't CSR.
1789          *
1790          * Known fake bcdDevices: 0x0100, 0x0134, 0x1915, 0x2520, 0x7558, 0x8891
1791          *
1792          * The main thing they have in common is that these are really popular low-cost
1793          * options that support newer Bluetooth versions but rely on heavy VID/PID
1794          * squatting of this poor old Bluetooth 1.1 device. Even sold as such.
1795          *
1796          * We detect actual CSR devices by checking that the HCI manufacturer code
1797          * is Cambridge Silicon Radio (10) and ensuring that LMP sub-version and
1798          * HCI rev values always match. As they both store the firmware number.
1799          */
1800         if (le16_to_cpu(rp->manufacturer) != 10 ||
1801             le16_to_cpu(rp->hci_rev) != le16_to_cpu(rp->lmp_subver))
1802                 is_fake = true;
1803
1804         /* Known legit CSR firmware build numbers and their supported BT versions:
1805          * - 1.1 (0x1) -> 0x0073, 0x020d, 0x033c, 0x034e
1806          * - 1.2 (0x2) ->                 0x04d9, 0x0529
1807          * - 2.0 (0x3) ->         0x07a6, 0x07ad, 0x0c5c
1808          * - 2.1 (0x4) ->         0x149c, 0x1735, 0x1899 (0x1899 is a BlueCore4-External)
1809          * - 4.0 (0x6) ->         0x1d86, 0x2031, 0x22bb
1810          *
1811          * e.g. Real CSR dongles with LMP subversion 0x73 are old enough that
1812          *      support BT 1.1 only; so it's a dead giveaway when some
1813          *      third-party BT 4.0 dongle reuses it.
1814          */
1815         else if (le16_to_cpu(rp->lmp_subver) <= 0x034e &&
1816                  le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_1_1)
1817                 is_fake = true;
1818
1819         else if (le16_to_cpu(rp->lmp_subver) <= 0x0529 &&
1820                  le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_1_2)
1821                 is_fake = true;
1822
1823         else if (le16_to_cpu(rp->lmp_subver) <= 0x0c5c &&
1824                  le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_2_0)
1825                 is_fake = true;
1826
1827         else if (le16_to_cpu(rp->lmp_subver) <= 0x1899 &&
1828                  le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_2_1)
1829                 is_fake = true;
1830
1831         else if (le16_to_cpu(rp->lmp_subver) <= 0x22bb &&
1832                  le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_4_0)
1833                 is_fake = true;
1834
1835         if (is_fake) {
1836                 bt_dev_warn(hdev, "CSR: Unbranded CSR clone detected; adding workarounds...");
1837
1838                 /* Generally these clones have big discrepancies between
1839                  * advertised features and what's actually supported.
1840                  * Probably will need to be expanded in the future;
1841                  * without these the controller will lock up.
1842                  */
1843                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
1844                 set_bit(HCI_QUIRK_BROKEN_ERR_DATA_REPORTING, &hdev->quirks);
1845
1846                 /* Clear the reset quirk since this is not an actual
1847                  * early Bluetooth 1.1 device from CSR.
1848                  */
1849                 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1850                 clear_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
1851         }
1852
1853         kfree_skb(skb);
1854
1855         return 0;
1856 }
1857
1858 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1859                                                        struct intel_version *ver)
1860 {
1861         const struct firmware *fw;
1862         char fwname[64];
1863         int ret;
1864
1865         snprintf(fwname, sizeof(fwname),
1866                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1867                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
1868                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1869                  ver->fw_build_ww, ver->fw_build_yy);
1870
1871         ret = request_firmware(&fw, fwname, &hdev->dev);
1872         if (ret < 0) {
1873                 if (ret == -EINVAL) {
1874                         bt_dev_err(hdev, "Intel firmware file request failed (%d)",
1875                                    ret);
1876                         return NULL;
1877                 }
1878
1879                 bt_dev_err(hdev, "failed to open Intel firmware file: %s (%d)",
1880                            fwname, ret);
1881
1882                 /* If the correct firmware patch file is not found, use the
1883                  * default firmware patch file instead
1884                  */
1885                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1886                          ver->hw_platform, ver->hw_variant);
1887                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1888                         bt_dev_err(hdev, "failed to open default fw file: %s",
1889                                    fwname);
1890                         return NULL;
1891                 }
1892         }
1893
1894         bt_dev_info(hdev, "Intel Bluetooth firmware file: %s", fwname);
1895
1896         return fw;
1897 }
1898
1899 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1900                                       const struct firmware *fw,
1901                                       const u8 **fw_ptr, int *disable_patch)
1902 {
1903         struct sk_buff *skb;
1904         struct hci_command_hdr *cmd;
1905         const u8 *cmd_param;
1906         struct hci_event_hdr *evt = NULL;
1907         const u8 *evt_param = NULL;
1908         int remain = fw->size - (*fw_ptr - fw->data);
1909
1910         /* The first byte indicates the types of the patch command or event.
1911          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1912          * in the current firmware buffer doesn't start with 0x01 or
1913          * the size of remain buffer is smaller than HCI command header,
1914          * the firmware file is corrupted and it should stop the patching
1915          * process.
1916          */
1917         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1918                 bt_dev_err(hdev, "Intel fw corrupted: invalid cmd read");
1919                 return -EINVAL;
1920         }
1921         (*fw_ptr)++;
1922         remain--;
1923
1924         cmd = (struct hci_command_hdr *)(*fw_ptr);
1925         *fw_ptr += sizeof(*cmd);
1926         remain -= sizeof(*cmd);
1927
1928         /* Ensure that the remain firmware data is long enough than the length
1929          * of command parameter. If not, the firmware file is corrupted.
1930          */
1931         if (remain < cmd->plen) {
1932                 bt_dev_err(hdev, "Intel fw corrupted: invalid cmd len");
1933                 return -EFAULT;
1934         }
1935
1936         /* If there is a command that loads a patch in the firmware
1937          * file, then enable the patch upon success, otherwise just
1938          * disable the manufacturer mode, for example patch activation
1939          * is not required when the default firmware patch file is used
1940          * because there are no patch data to load.
1941          */
1942         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1943                 *disable_patch = 0;
1944
1945         cmd_param = *fw_ptr;
1946         *fw_ptr += cmd->plen;
1947         remain -= cmd->plen;
1948
1949         /* This reads the expected events when the above command is sent to the
1950          * device. Some vendor commands expects more than one events, for
1951          * example command status event followed by vendor specific event.
1952          * For this case, it only keeps the last expected event. so the command
1953          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1954          * last expected event.
1955          */
1956         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1957                 (*fw_ptr)++;
1958                 remain--;
1959
1960                 evt = (struct hci_event_hdr *)(*fw_ptr);
1961                 *fw_ptr += sizeof(*evt);
1962                 remain -= sizeof(*evt);
1963
1964                 if (remain < evt->plen) {
1965                         bt_dev_err(hdev, "Intel fw corrupted: invalid evt len");
1966                         return -EFAULT;
1967                 }
1968
1969                 evt_param = *fw_ptr;
1970                 *fw_ptr += evt->plen;
1971                 remain -= evt->plen;
1972         }
1973
1974         /* Every HCI commands in the firmware file has its correspond event.
1975          * If event is not found or remain is smaller than zero, the firmware
1976          * file is corrupted.
1977          */
1978         if (!evt || !evt_param || remain < 0) {
1979                 bt_dev_err(hdev, "Intel fw corrupted: invalid evt read");
1980                 return -EFAULT;
1981         }
1982
1983         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1984                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1985         if (IS_ERR(skb)) {
1986                 bt_dev_err(hdev, "sending Intel patch command (0x%4.4x) failed (%ld)",
1987                            cmd->opcode, PTR_ERR(skb));
1988                 return PTR_ERR(skb);
1989         }
1990
1991         /* It ensures that the returned event matches the event data read from
1992          * the firmware file. At fist, it checks the length and then
1993          * the contents of the event.
1994          */
1995         if (skb->len != evt->plen) {
1996                 bt_dev_err(hdev, "mismatch event length (opcode 0x%4.4x)",
1997                            le16_to_cpu(cmd->opcode));
1998                 kfree_skb(skb);
1999                 return -EFAULT;
2000         }
2001
2002         if (memcmp(skb->data, evt_param, evt->plen)) {
2003                 bt_dev_err(hdev, "mismatch event parameter (opcode 0x%4.4x)",
2004                            le16_to_cpu(cmd->opcode));
2005                 kfree_skb(skb);
2006                 return -EFAULT;
2007         }
2008         kfree_skb(skb);
2009
2010         return 0;
2011 }
2012
2013 static int btusb_setup_intel(struct hci_dev *hdev)
2014 {
2015         struct sk_buff *skb;
2016         const struct firmware *fw;
2017         const u8 *fw_ptr;
2018         int disable_patch, err;
2019         struct intel_version ver;
2020
2021         BT_DBG("%s", hdev->name);
2022
2023         /* The controller has a bug with the first HCI command sent to it
2024          * returning number of completed commands as zero. This would stall the
2025          * command processing in the Bluetooth core.
2026          *
2027          * As a workaround, send HCI Reset command first which will reset the
2028          * number of completed commands and allow normal command processing
2029          * from now on.
2030          */
2031         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2032         if (IS_ERR(skb)) {
2033                 bt_dev_err(hdev, "sending initial HCI reset command failed (%ld)",
2034                            PTR_ERR(skb));
2035                 return PTR_ERR(skb);
2036         }
2037         kfree_skb(skb);
2038
2039         /* Read Intel specific controller version first to allow selection of
2040          * which firmware file to load.
2041          *
2042          * The returned information are hardware variant and revision plus
2043          * firmware variant, revision and build number.
2044          */
2045         err = btintel_read_version(hdev, &ver);
2046         if (err)
2047                 return err;
2048
2049         bt_dev_info(hdev, "read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
2050                     ver.hw_platform, ver.hw_variant, ver.hw_revision,
2051                     ver.fw_variant,  ver.fw_revision, ver.fw_build_num,
2052                     ver.fw_build_ww, ver.fw_build_yy, ver.fw_patch_num);
2053
2054         /* fw_patch_num indicates the version of patch the device currently
2055          * have. If there is no patch data in the device, it is always 0x00.
2056          * So, if it is other than 0x00, no need to patch the device again.
2057          */
2058         if (ver.fw_patch_num) {
2059                 bt_dev_info(hdev, "Intel device is already patched. "
2060                             "patch num: %02x", ver.fw_patch_num);
2061                 goto complete;
2062         }
2063
2064         /* Opens the firmware patch file based on the firmware version read
2065          * from the controller. If it fails to open the matching firmware
2066          * patch file, it tries to open the default firmware patch file.
2067          * If no patch file is found, allow the device to operate without
2068          * a patch.
2069          */
2070         fw = btusb_setup_intel_get_fw(hdev, &ver);
2071         if (!fw)
2072                 goto complete;
2073         fw_ptr = fw->data;
2074
2075         /* Enable the manufacturer mode of the controller.
2076          * Only while this mode is enabled, the driver can download the
2077          * firmware patch data and configuration parameters.
2078          */
2079         err = btintel_enter_mfg(hdev);
2080         if (err) {
2081                 release_firmware(fw);
2082                 return err;
2083         }
2084
2085         disable_patch = 1;
2086
2087         /* The firmware data file consists of list of Intel specific HCI
2088          * commands and its expected events. The first byte indicates the
2089          * type of the message, either HCI command or HCI event.
2090          *
2091          * It reads the command and its expected event from the firmware file,
2092          * and send to the controller. Once __hci_cmd_sync_ev() returns,
2093          * the returned event is compared with the event read from the firmware
2094          * file and it will continue until all the messages are downloaded to
2095          * the controller.
2096          *
2097          * Once the firmware patching is completed successfully,
2098          * the manufacturer mode is disabled with reset and activating the
2099          * downloaded patch.
2100          *
2101          * If the firmware patching fails, the manufacturer mode is
2102          * disabled with reset and deactivating the patch.
2103          *
2104          * If the default patch file is used, no reset is done when disabling
2105          * the manufacturer.
2106          */
2107         while (fw->size > fw_ptr - fw->data) {
2108                 int ret;
2109
2110                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
2111                                                  &disable_patch);
2112                 if (ret < 0)
2113                         goto exit_mfg_deactivate;
2114         }
2115
2116         release_firmware(fw);
2117
2118         if (disable_patch)
2119                 goto exit_mfg_disable;
2120
2121         /* Patching completed successfully and disable the manufacturer mode
2122          * with reset and activate the downloaded firmware patches.
2123          */
2124         err = btintel_exit_mfg(hdev, true, true);
2125         if (err)
2126                 return err;
2127
2128         /* Need build number for downloaded fw patches in
2129          * every power-on boot
2130          */
2131        err = btintel_read_version(hdev, &ver);
2132        if (err)
2133                return err;
2134        bt_dev_info(hdev, "Intel BT fw patch 0x%02x completed & activated",
2135                    ver.fw_patch_num);
2136
2137         goto complete;
2138
2139 exit_mfg_disable:
2140         /* Disable the manufacturer mode without reset */
2141         err = btintel_exit_mfg(hdev, false, false);
2142         if (err)
2143                 return err;
2144
2145         bt_dev_info(hdev, "Intel firmware patch completed");
2146
2147         goto complete;
2148
2149 exit_mfg_deactivate:
2150         release_firmware(fw);
2151
2152         /* Patching failed. Disable the manufacturer mode with reset and
2153          * deactivate the downloaded firmware patches.
2154          */
2155         err = btintel_exit_mfg(hdev, true, false);
2156         if (err)
2157                 return err;
2158
2159         bt_dev_info(hdev, "Intel firmware patch completed and deactivated");
2160
2161 complete:
2162         /* Set the event mask for Intel specific vendor events. This enables
2163          * a few extra events that are useful during general operation.
2164          */
2165         btintel_set_event_mask_mfg(hdev, false);
2166
2167         btintel_check_bdaddr(hdev);
2168         return 0;
2169 }
2170
2171 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
2172 {
2173         struct sk_buff *skb;
2174         struct hci_event_hdr *hdr;
2175         struct hci_ev_cmd_complete *evt;
2176
2177         skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_KERNEL);
2178         if (!skb)
2179                 return -ENOMEM;
2180
2181         hdr = skb_put(skb, sizeof(*hdr));
2182         hdr->evt = HCI_EV_CMD_COMPLETE;
2183         hdr->plen = sizeof(*evt) + 1;
2184
2185         evt = skb_put(skb, sizeof(*evt));
2186         evt->ncmd = 0x01;
2187         evt->opcode = cpu_to_le16(opcode);
2188
2189         skb_put_u8(skb, 0x00);
2190
2191         hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
2192
2193         return hci_recv_frame(hdev, skb);
2194 }
2195
2196 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
2197                                  int count)
2198 {
2199         /* When the device is in bootloader mode, then it can send
2200          * events via the bulk endpoint. These events are treated the
2201          * same way as the ones received from the interrupt endpoint.
2202          */
2203         if (test_bit(BTUSB_BOOTLOADER, &data->flags))
2204                 return btusb_recv_intr(data, buffer, count);
2205
2206         return btusb_recv_bulk(data, buffer, count);
2207 }
2208
2209 static void btusb_intel_bootup(struct btusb_data *data, const void *ptr,
2210                                unsigned int len)
2211 {
2212         const struct intel_bootup *evt = ptr;
2213
2214         if (len != sizeof(*evt))
2215                 return;
2216
2217         if (test_and_clear_bit(BTUSB_BOOTING, &data->flags))
2218                 wake_up_bit(&data->flags, BTUSB_BOOTING);
2219 }
2220
2221 static void btusb_intel_secure_send_result(struct btusb_data *data,
2222                                            const void *ptr, unsigned int len)
2223 {
2224         const struct intel_secure_send_result *evt = ptr;
2225
2226         if (len != sizeof(*evt))
2227                 return;
2228
2229         if (evt->result)
2230                 set_bit(BTUSB_FIRMWARE_FAILED, &data->flags);
2231
2232         if (test_and_clear_bit(BTUSB_DOWNLOADING, &data->flags) &&
2233             test_bit(BTUSB_FIRMWARE_LOADED, &data->flags))
2234                 wake_up_bit(&data->flags, BTUSB_DOWNLOADING);
2235 }
2236
2237 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
2238 {
2239         struct btusb_data *data = hci_get_drvdata(hdev);
2240
2241         if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
2242                 struct hci_event_hdr *hdr = (void *)skb->data;
2243
2244                 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
2245                     hdr->plen > 0) {
2246                         const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
2247                         unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
2248
2249                         switch (skb->data[2]) {
2250                         case 0x02:
2251                                 /* When switching to the operational firmware
2252                                  * the device sends a vendor specific event
2253                                  * indicating that the bootup completed.
2254                                  */
2255                                 btusb_intel_bootup(data, ptr, len);
2256                                 break;
2257                         case 0x06:
2258                                 /* When the firmware loading completes the
2259                                  * device sends out a vendor specific event
2260                                  * indicating the result of the firmware
2261                                  * loading.
2262                                  */
2263                                 btusb_intel_secure_send_result(data, ptr, len);
2264                                 break;
2265                         }
2266                 }
2267         }
2268
2269         return hci_recv_frame(hdev, skb);
2270 }
2271
2272 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
2273 {
2274         struct btusb_data *data = hci_get_drvdata(hdev);
2275         struct urb *urb;
2276
2277         BT_DBG("%s", hdev->name);
2278
2279         switch (hci_skb_pkt_type(skb)) {
2280         case HCI_COMMAND_PKT:
2281                 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
2282                         struct hci_command_hdr *cmd = (void *)skb->data;
2283                         __u16 opcode = le16_to_cpu(cmd->opcode);
2284
2285                         /* When in bootloader mode and the command 0xfc09
2286                          * is received, it needs to be send down the
2287                          * bulk endpoint. So allocate a bulk URB instead.
2288                          */
2289                         if (opcode == 0xfc09)
2290                                 urb = alloc_bulk_urb(hdev, skb);
2291                         else
2292                                 urb = alloc_ctrl_urb(hdev, skb);
2293
2294                         /* When the 0xfc01 command is issued to boot into
2295                          * the operational firmware, it will actually not
2296                          * send a command complete event. To keep the flow
2297                          * control working inject that event here.
2298                          */
2299                         if (opcode == 0xfc01)
2300                                 inject_cmd_complete(hdev, opcode);
2301                 } else {
2302                         urb = alloc_ctrl_urb(hdev, skb);
2303                 }
2304                 if (IS_ERR(urb))
2305                         return PTR_ERR(urb);
2306
2307                 hdev->stat.cmd_tx++;
2308                 return submit_or_queue_tx_urb(hdev, urb);
2309
2310         case HCI_ACLDATA_PKT:
2311                 urb = alloc_bulk_urb(hdev, skb);
2312                 if (IS_ERR(urb))
2313                         return PTR_ERR(urb);
2314
2315                 hdev->stat.acl_tx++;
2316                 return submit_or_queue_tx_urb(hdev, urb);
2317
2318         case HCI_SCODATA_PKT:
2319                 if (hci_conn_num(hdev, SCO_LINK) < 1)
2320                         return -ENODEV;
2321
2322                 urb = alloc_isoc_urb(hdev, skb);
2323                 if (IS_ERR(urb))
2324                         return PTR_ERR(urb);
2325
2326                 hdev->stat.sco_tx++;
2327                 return submit_tx_urb(hdev, urb);
2328         }
2329
2330         return -EILSEQ;
2331 }
2332
2333 static bool btusb_setup_intel_new_get_fw_name(struct intel_version *ver,
2334                                              struct intel_boot_params *params,
2335                                              char *fw_name, size_t len,
2336                                              const char *suffix)
2337 {
2338         switch (ver->hw_variant) {
2339         case 0x0b:      /* SfP */
2340         case 0x0c:      /* WsP */
2341                 snprintf(fw_name, len, "intel/ibt-%u-%u.%s",
2342                         le16_to_cpu(ver->hw_variant),
2343                         le16_to_cpu(params->dev_revid),
2344                         suffix);
2345                 break;
2346         case 0x11:      /* JfP */
2347         case 0x12:      /* ThP */
2348         case 0x13:      /* HrP */
2349         case 0x14:      /* CcP */
2350                 snprintf(fw_name, len, "intel/ibt-%u-%u-%u.%s",
2351                         le16_to_cpu(ver->hw_variant),
2352                         le16_to_cpu(ver->hw_revision),
2353                         le16_to_cpu(ver->fw_revision),
2354                         suffix);
2355                 break;
2356         default:
2357                 return false;
2358         }
2359         return true;
2360 }
2361
2362 static int btusb_intel_download_firmware(struct hci_dev *hdev,
2363                                          struct intel_version *ver,
2364                                          struct intel_boot_params *params,
2365                                          u32 *boot_param)
2366 {
2367         const struct firmware *fw;
2368         char fwname[64];
2369         int err;
2370         struct btusb_data *data = hci_get_drvdata(hdev);
2371
2372         if (!ver || !params)
2373                 return -EINVAL;
2374
2375         /* The hardware platform number has a fixed value of 0x37 and
2376          * for now only accept this single value.
2377          */
2378         if (ver->hw_platform != 0x37) {
2379                 bt_dev_err(hdev, "Unsupported Intel hardware platform (%u)",
2380                            ver->hw_platform);
2381                 return -EINVAL;
2382         }
2383
2384         /* Check for supported iBT hardware variants of this firmware
2385          * loading method.
2386          *
2387          * This check has been put in place to ensure correct forward
2388          * compatibility options when newer hardware variants come along.
2389          */
2390         switch (ver->hw_variant) {
2391         case 0x0b:      /* SfP */
2392         case 0x0c:      /* WsP */
2393         case 0x11:      /* JfP */
2394         case 0x12:      /* ThP */
2395         case 0x13:      /* HrP */
2396         case 0x14:      /* CcP */
2397                 break;
2398         default:
2399                 bt_dev_err(hdev, "Unsupported Intel hardware variant (%u)",
2400                            ver->hw_variant);
2401                 return -EINVAL;
2402         }
2403
2404         btintel_version_info(hdev, ver);
2405
2406         /* The firmware variant determines if the device is in bootloader
2407          * mode or is running operational firmware. The value 0x06 identifies
2408          * the bootloader and the value 0x23 identifies the operational
2409          * firmware.
2410          *
2411          * When the operational firmware is already present, then only
2412          * the check for valid Bluetooth device address is needed. This
2413          * determines if the device will be added as configured or
2414          * unconfigured controller.
2415          *
2416          * It is not possible to use the Secure Boot Parameters in this
2417          * case since that command is only available in bootloader mode.
2418          */
2419         if (ver->fw_variant == 0x23) {
2420                 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2421                 btintel_check_bdaddr(hdev);
2422                 return 0;
2423         }
2424
2425         /* If the device is not in bootloader mode, then the only possible
2426          * choice is to return an error and abort the device initialization.
2427          */
2428         if (ver->fw_variant != 0x06) {
2429                 bt_dev_err(hdev, "Unsupported Intel firmware variant (%u)",
2430                            ver->fw_variant);
2431                 return -ENODEV;
2432         }
2433
2434         /* Read the secure boot parameters to identify the operating
2435          * details of the bootloader.
2436          */
2437         err = btintel_read_boot_params(hdev, params);
2438         if (err)
2439                 return err;
2440
2441         /* It is required that every single firmware fragment is acknowledged
2442          * with a command complete event. If the boot parameters indicate
2443          * that this bootloader does not send them, then abort the setup.
2444          */
2445         if (params->limited_cce != 0x00) {
2446                 bt_dev_err(hdev, "Unsupported Intel firmware loading method (%u)",
2447                            params->limited_cce);
2448                 return -EINVAL;
2449         }
2450
2451         /* If the OTP has no valid Bluetooth device address, then there will
2452          * also be no valid address for the operational firmware.
2453          */
2454         if (!bacmp(&params->otp_bdaddr, BDADDR_ANY)) {
2455                 bt_dev_info(hdev, "No device address configured");
2456                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2457         }
2458
2459         /* With this Intel bootloader only the hardware variant and device
2460          * revision information are used to select the right firmware for SfP
2461          * and WsP.
2462          *
2463          * The firmware filename is ibt-<hw_variant>-<dev_revid>.sfi.
2464          *
2465          * Currently the supported hardware variants are:
2466          *   11 (0x0b) for iBT3.0 (LnP/SfP)
2467          *   12 (0x0c) for iBT3.5 (WsP)
2468          *
2469          * For ThP/JfP and for future SKU's, the FW name varies based on HW
2470          * variant, HW revision and FW revision, as these are dependent on CNVi
2471          * and RF Combination.
2472          *
2473          *   17 (0x11) for iBT3.5 (JfP)
2474          *   18 (0x12) for iBT3.5 (ThP)
2475          *
2476          * The firmware file name for these will be
2477          * ibt-<hw_variant>-<hw_revision>-<fw_revision>.sfi.
2478          *
2479          */
2480         err = btusb_setup_intel_new_get_fw_name(ver, params, fwname,
2481                                                 sizeof(fwname), "sfi");
2482         if (!err) {
2483                 bt_dev_err(hdev, "Unsupported Intel firmware naming");
2484                 return -EINVAL;
2485         }
2486
2487         err = request_firmware(&fw, fwname, &hdev->dev);
2488         if (err < 0) {
2489                 bt_dev_err(hdev, "Failed to load Intel firmware file (%d)", err);
2490                 return err;
2491         }
2492
2493         bt_dev_info(hdev, "Found device firmware: %s", fwname);
2494
2495         if (fw->size < 644) {
2496                 bt_dev_err(hdev, "Invalid size of firmware file (%zu)",
2497                            fw->size);
2498                 err = -EBADF;
2499                 goto done;
2500         }
2501
2502         set_bit(BTUSB_DOWNLOADING, &data->flags);
2503
2504         /* Start firmware downloading and get boot parameter */
2505         err = btintel_download_firmware(hdev, fw, boot_param);
2506         if (err < 0) {
2507                 /* When FW download fails, send Intel Reset to retry
2508                  * FW download.
2509                  */
2510                 btintel_reset_to_bootloader(hdev);
2511                 goto done;
2512         }
2513         set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2514
2515         bt_dev_info(hdev, "Waiting for firmware download to complete");
2516
2517         /* Before switching the device into operational mode and with that
2518          * booting the loaded firmware, wait for the bootloader notification
2519          * that all fragments have been successfully received.
2520          *
2521          * When the event processing receives the notification, then the
2522          * BTUSB_DOWNLOADING flag will be cleared.
2523          *
2524          * The firmware loading should not take longer than 5 seconds
2525          * and thus just timeout if that happens and fail the setup
2526          * of this device.
2527          */
2528         err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
2529                                   TASK_INTERRUPTIBLE,
2530                                   msecs_to_jiffies(5000));
2531         if (err == -EINTR) {
2532                 bt_dev_err(hdev, "Firmware loading interrupted");
2533                 goto done;
2534         }
2535
2536         if (err) {
2537                 bt_dev_err(hdev, "Firmware loading timeout");
2538                 err = -ETIMEDOUT;
2539                 btintel_reset_to_bootloader(hdev);
2540                 goto done;
2541         }
2542
2543         if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) {
2544                 bt_dev_err(hdev, "Firmware loading failed");
2545                 err = -ENOEXEC;
2546                 goto done;
2547         }
2548
2549 done:
2550         release_firmware(fw);
2551         return err;
2552 }
2553
2554 static int btusb_setup_intel_new(struct hci_dev *hdev)
2555 {
2556         struct btusb_data *data = hci_get_drvdata(hdev);
2557         struct intel_version ver;
2558         struct intel_boot_params params;
2559         u32 boot_param;
2560         char ddcname[64];
2561         ktime_t calltime, delta, rettime;
2562         unsigned long long duration;
2563         int err;
2564         struct intel_debug_features features;
2565
2566         BT_DBG("%s", hdev->name);
2567
2568         /* Set the default boot parameter to 0x0 and it is updated to
2569          * SKU specific boot parameter after reading Intel_Write_Boot_Params
2570          * command while downloading the firmware.
2571          */
2572         boot_param = 0x00000000;
2573
2574         calltime = ktime_get();
2575
2576         /* Read the Intel version information to determine if the device
2577          * is in bootloader mode or if it already has operational firmware
2578          * loaded.
2579          */
2580         err = btintel_read_version(hdev, &ver);
2581         if (err) {
2582                 bt_dev_err(hdev, "Intel Read version failed (%d)", err);
2583                 btintel_reset_to_bootloader(hdev);
2584                 return err;
2585         }
2586
2587         err = btusb_intel_download_firmware(hdev, &ver, &params, &boot_param);
2588         if (err)
2589                 return err;
2590
2591         /* controller is already having an operational firmware */
2592         if (ver.fw_variant == 0x23)
2593                 goto finish;
2594
2595         rettime = ktime_get();
2596         delta = ktime_sub(rettime, calltime);
2597         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2598
2599         bt_dev_info(hdev, "Firmware loaded in %llu usecs", duration);
2600
2601         calltime = ktime_get();
2602
2603         set_bit(BTUSB_BOOTING, &data->flags);
2604
2605         err = btintel_send_intel_reset(hdev, boot_param);
2606         if (err) {
2607                 bt_dev_err(hdev, "Intel Soft Reset failed (%d)", err);
2608                 btintel_reset_to_bootloader(hdev);
2609                 return err;
2610         }
2611
2612         /* The bootloader will not indicate when the device is ready. This
2613          * is done by the operational firmware sending bootup notification.
2614          *
2615          * Booting into operational firmware should not take longer than
2616          * 1 second. However if that happens, then just fail the setup
2617          * since something went wrong.
2618          */
2619         bt_dev_info(hdev, "Waiting for device to boot");
2620
2621         err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING,
2622                                   TASK_INTERRUPTIBLE,
2623                                   msecs_to_jiffies(1000));
2624
2625         if (err == -EINTR) {
2626                 bt_dev_err(hdev, "Device boot interrupted");
2627                 return -EINTR;
2628         }
2629
2630         if (err) {
2631                 bt_dev_err(hdev, "Device boot timeout");
2632                 btintel_reset_to_bootloader(hdev);
2633                 return -ETIMEDOUT;
2634         }
2635
2636         rettime = ktime_get();
2637         delta = ktime_sub(rettime, calltime);
2638         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2639
2640         bt_dev_info(hdev, "Device booted in %llu usecs", duration);
2641
2642         clear_bit(BTUSB_BOOTLOADER, &data->flags);
2643
2644         err = btusb_setup_intel_new_get_fw_name(&ver, &params, ddcname,
2645                                                 sizeof(ddcname), "ddc");
2646
2647         if (!err) {
2648                 bt_dev_err(hdev, "Unsupported Intel firmware naming");
2649         } else {
2650                 /* Once the device is running in operational mode, it needs to
2651                  * apply the device configuration (DDC) parameters.
2652                  *
2653                  * The device can work without DDC parameters, so even if it
2654                  * fails to load the file, no need to fail the setup.
2655                  */
2656                 btintel_load_ddc_config(hdev, ddcname);
2657         }
2658
2659         /* Read the Intel supported features and if new exception formats
2660          * supported, need to load the additional DDC config to enable.
2661          */
2662         btintel_read_debug_features(hdev, &features);
2663
2664         /* Set DDC mask for available debug features */
2665         btintel_set_debug_features(hdev, &features);
2666
2667         /* Read the Intel version information after loading the FW  */
2668         err = btintel_read_version(hdev, &ver);
2669         if (err)
2670                 return err;
2671
2672         btintel_version_info(hdev, &ver);
2673
2674 finish:
2675         /* All Intel controllers that support the Microsoft vendor
2676          * extension are using 0xFC1E for VsMsftOpCode.
2677          */
2678         switch (ver.hw_variant) {
2679         case 0x12:      /* ThP */
2680                 hci_set_msft_opcode(hdev, 0xFC1E);
2681                 break;
2682         }
2683
2684         /* Set the event mask for Intel specific vendor events. This enables
2685          * a few extra events that are useful during general operation. It
2686          * does not enable any debugging related events.
2687          *
2688          * The device will function correctly without these events enabled
2689          * and thus no need to fail the setup.
2690          */
2691         btintel_set_event_mask(hdev, false);
2692
2693         return 0;
2694 }
2695
2696 static int btusb_shutdown_intel(struct hci_dev *hdev)
2697 {
2698         struct sk_buff *skb;
2699         long ret;
2700
2701         /* In the shutdown sequence where Bluetooth is turned off followed
2702          * by WiFi being turned off, turning WiFi back on causes issue with
2703          * the RF calibration.
2704          *
2705          * To ensure that any RF activity has been stopped, issue HCI Reset
2706          * command to clear all ongoing activity including advertising,
2707          * scanning etc.
2708          */
2709         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2710         if (IS_ERR(skb)) {
2711                 ret = PTR_ERR(skb);
2712                 bt_dev_err(hdev, "HCI reset during shutdown failed");
2713                 return ret;
2714         }
2715         kfree_skb(skb);
2716
2717         /* Some platforms have an issue with BT LED when the interface is
2718          * down or BT radio is turned off, which takes 5 seconds to BT LED
2719          * goes off. This command turns off the BT LED immediately.
2720          */
2721         skb = __hci_cmd_sync(hdev, 0xfc3f, 0, NULL, HCI_INIT_TIMEOUT);
2722         if (IS_ERR(skb)) {
2723                 ret = PTR_ERR(skb);
2724                 bt_dev_err(hdev, "turning off Intel device LED failed");
2725                 return ret;
2726         }
2727         kfree_skb(skb);
2728
2729         return 0;
2730 }
2731
2732 static int btusb_shutdown_intel_new(struct hci_dev *hdev)
2733 {
2734         struct sk_buff *skb;
2735
2736         /* Send HCI Reset to the controller to stop any BT activity which
2737          * were triggered. This will help to save power and maintain the
2738          * sync b/w Host and controller
2739          */
2740         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2741         if (IS_ERR(skb)) {
2742                 bt_dev_err(hdev, "HCI reset during shutdown failed");
2743                 return PTR_ERR(skb);
2744         }
2745         kfree_skb(skb);
2746
2747         return 0;
2748 }
2749
2750 #define FIRMWARE_MT7663         "mediatek/mt7663pr2h.bin"
2751 #define FIRMWARE_MT7668         "mediatek/mt7668pr2h.bin"
2752
2753 #define HCI_WMT_MAX_EVENT_SIZE          64
2754
2755 enum {
2756         BTMTK_WMT_PATCH_DWNLD = 0x1,
2757         BTMTK_WMT_FUNC_CTRL = 0x6,
2758         BTMTK_WMT_RST = 0x7,
2759         BTMTK_WMT_SEMAPHORE = 0x17,
2760 };
2761
2762 enum {
2763         BTMTK_WMT_INVALID,
2764         BTMTK_WMT_PATCH_UNDONE,
2765         BTMTK_WMT_PATCH_DONE,
2766         BTMTK_WMT_ON_UNDONE,
2767         BTMTK_WMT_ON_DONE,
2768         BTMTK_WMT_ON_PROGRESS,
2769 };
2770
2771 struct btmtk_wmt_hdr {
2772         u8      dir;
2773         u8      op;
2774         __le16  dlen;
2775         u8      flag;
2776 } __packed;
2777
2778 struct btmtk_hci_wmt_cmd {
2779         struct btmtk_wmt_hdr hdr;
2780         u8 data[256];
2781 } __packed;
2782
2783 struct btmtk_hci_wmt_evt {
2784         struct hci_event_hdr hhdr;
2785         struct btmtk_wmt_hdr whdr;
2786 } __packed;
2787
2788 struct btmtk_hci_wmt_evt_funcc {
2789         struct btmtk_hci_wmt_evt hwhdr;
2790         __be16 status;
2791 } __packed;
2792
2793 struct btmtk_tci_sleep {
2794         u8 mode;
2795         __le16 duration;
2796         __le16 host_duration;
2797         u8 host_wakeup_pin;
2798         u8 time_compensation;
2799 } __packed;
2800
2801 struct btmtk_hci_wmt_params {
2802         u8 op;
2803         u8 flag;
2804         u16 dlen;
2805         const void *data;
2806         u32 *status;
2807 };
2808
2809 static void btusb_mtk_wmt_recv(struct urb *urb)
2810 {
2811         struct hci_dev *hdev = urb->context;
2812         struct btusb_data *data = hci_get_drvdata(hdev);
2813         struct hci_event_hdr *hdr;
2814         struct sk_buff *skb;
2815         int err;
2816
2817         if (urb->status == 0 && urb->actual_length > 0) {
2818                 hdev->stat.byte_rx += urb->actual_length;
2819
2820                 /* WMT event shouldn't be fragmented and the size should be
2821                  * less than HCI_WMT_MAX_EVENT_SIZE.
2822                  */
2823                 skb = bt_skb_alloc(HCI_WMT_MAX_EVENT_SIZE, GFP_ATOMIC);
2824                 if (!skb) {
2825                         hdev->stat.err_rx++;
2826                         goto err_out;
2827                 }
2828
2829                 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
2830                 skb_put_data(skb, urb->transfer_buffer, urb->actual_length);
2831
2832                 hdr = (void *)skb->data;
2833                 /* Fix up the vendor event id with 0xff for vendor specific
2834                  * instead of 0xe4 so that event send via monitoring socket can
2835                  * be parsed properly.
2836                  */
2837                 hdr->evt = 0xff;
2838
2839                 /* When someone waits for the WMT event, the skb is being cloned
2840                  * and being processed the events from there then.
2841                  */
2842                 if (test_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags)) {
2843                         data->evt_skb = skb_clone(skb, GFP_ATOMIC);
2844                         if (!data->evt_skb)
2845                                 goto err_out;
2846                 }
2847
2848                 err = hci_recv_frame(hdev, skb);
2849                 if (err < 0)
2850                         goto err_free_skb;
2851
2852                 if (test_and_clear_bit(BTUSB_TX_WAIT_VND_EVT,
2853                                        &data->flags)) {
2854                         /* Barrier to sync with other CPUs */
2855                         smp_mb__after_atomic();
2856                         wake_up_bit(&data->flags,
2857                                     BTUSB_TX_WAIT_VND_EVT);
2858                 }
2859 err_out:
2860                 return;
2861 err_free_skb:
2862                 kfree_skb(data->evt_skb);
2863                 data->evt_skb = NULL;
2864                 return;
2865         } else if (urb->status == -ENOENT) {
2866                 /* Avoid suspend failed when usb_kill_urb */
2867                 return;
2868         }
2869
2870         usb_mark_last_busy(data->udev);
2871
2872         /* The URB complete handler is still called with urb->actual_length = 0
2873          * when the event is not available, so we should keep re-submitting
2874          * URB until WMT event returns, Also, It's necessary to wait some time
2875          * between the two consecutive control URBs to relax the target device
2876          * to generate the event. Otherwise, the WMT event cannot return from
2877          * the device successfully.
2878          */
2879         udelay(100);
2880
2881         usb_anchor_urb(urb, &data->ctrl_anchor);
2882         err = usb_submit_urb(urb, GFP_ATOMIC);
2883         if (err < 0) {
2884                 /* -EPERM: urb is being killed;
2885                  * -ENODEV: device got disconnected
2886                  */
2887                 if (err != -EPERM && err != -ENODEV)
2888                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
2889                                    urb, -err);
2890                 usb_unanchor_urb(urb);
2891         }
2892 }
2893
2894 static int btusb_mtk_submit_wmt_recv_urb(struct hci_dev *hdev)
2895 {
2896         struct btusb_data *data = hci_get_drvdata(hdev);
2897         struct usb_ctrlrequest *dr;
2898         unsigned char *buf;
2899         int err, size = 64;
2900         unsigned int pipe;
2901         struct urb *urb;
2902
2903         urb = usb_alloc_urb(0, GFP_KERNEL);
2904         if (!urb)
2905                 return -ENOMEM;
2906
2907         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
2908         if (!dr) {
2909                 usb_free_urb(urb);
2910                 return -ENOMEM;
2911         }
2912
2913         dr->bRequestType = USB_TYPE_VENDOR | USB_DIR_IN;
2914         dr->bRequest     = 1;
2915         dr->wIndex       = cpu_to_le16(0);
2916         dr->wValue       = cpu_to_le16(48);
2917         dr->wLength      = cpu_to_le16(size);
2918
2919         buf = kmalloc(size, GFP_KERNEL);
2920         if (!buf) {
2921                 kfree(dr);
2922                 usb_free_urb(urb);
2923                 return -ENOMEM;
2924         }
2925
2926         pipe = usb_rcvctrlpipe(data->udev, 0);
2927
2928         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
2929                              buf, size, btusb_mtk_wmt_recv, hdev);
2930
2931         urb->transfer_flags |= URB_FREE_BUFFER;
2932
2933         usb_anchor_urb(urb, &data->ctrl_anchor);
2934         err = usb_submit_urb(urb, GFP_KERNEL);
2935         if (err < 0) {
2936                 if (err != -EPERM && err != -ENODEV)
2937                         bt_dev_err(hdev, "urb %p submission failed (%d)",
2938                                    urb, -err);
2939                 usb_unanchor_urb(urb);
2940         }
2941
2942         usb_free_urb(urb);
2943
2944         return err;
2945 }
2946
2947 static int btusb_mtk_hci_wmt_sync(struct hci_dev *hdev,
2948                                   struct btmtk_hci_wmt_params *wmt_params)
2949 {
2950         struct btusb_data *data = hci_get_drvdata(hdev);
2951         struct btmtk_hci_wmt_evt_funcc *wmt_evt_funcc;
2952         u32 hlen, status = BTMTK_WMT_INVALID;
2953         struct btmtk_hci_wmt_evt *wmt_evt;
2954         struct btmtk_hci_wmt_cmd wc;
2955         struct btmtk_wmt_hdr *hdr;
2956         int err;
2957
2958         /* Submit control IN URB on demand to process the WMT event */
2959         err = btusb_mtk_submit_wmt_recv_urb(hdev);
2960         if (err < 0)
2961                 return err;
2962
2963         /* Send the WMT command and wait until the WMT event returns */
2964         hlen = sizeof(*hdr) + wmt_params->dlen;
2965         if (hlen > 255)
2966                 return -EINVAL;
2967
2968         hdr = (struct btmtk_wmt_hdr *)&wc;
2969         hdr->dir = 1;
2970         hdr->op = wmt_params->op;
2971         hdr->dlen = cpu_to_le16(wmt_params->dlen + 1);
2972         hdr->flag = wmt_params->flag;
2973         memcpy(wc.data, wmt_params->data, wmt_params->dlen);
2974
2975         set_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2976
2977         err = __hci_cmd_send(hdev, 0xfc6f, hlen, &wc);
2978
2979         if (err < 0) {
2980                 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2981                 return err;
2982         }
2983
2984         /* The vendor specific WMT commands are all answered by a vendor
2985          * specific event and will have the Command Status or Command
2986          * Complete as with usual HCI command flow control.
2987          *
2988          * After sending the command, wait for BTUSB_TX_WAIT_VND_EVT
2989          * state to be cleared. The driver specific event receive routine
2990          * will clear that state and with that indicate completion of the
2991          * WMT command.
2992          */
2993         err = wait_on_bit_timeout(&data->flags, BTUSB_TX_WAIT_VND_EVT,
2994                                   TASK_INTERRUPTIBLE, HCI_INIT_TIMEOUT);
2995         if (err == -EINTR) {
2996                 bt_dev_err(hdev, "Execution of wmt command interrupted");
2997                 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2998                 return err;
2999         }
3000
3001         if (err) {
3002                 bt_dev_err(hdev, "Execution of wmt command timed out");
3003                 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
3004                 return -ETIMEDOUT;
3005         }
3006
3007         /* Parse and handle the return WMT event */
3008         wmt_evt = (struct btmtk_hci_wmt_evt *)data->evt_skb->data;
3009         if (wmt_evt->whdr.op != hdr->op) {
3010                 bt_dev_err(hdev, "Wrong op received %d expected %d",
3011                            wmt_evt->whdr.op, hdr->op);
3012                 err = -EIO;
3013                 goto err_free_skb;
3014         }
3015
3016         switch (wmt_evt->whdr.op) {
3017         case BTMTK_WMT_SEMAPHORE:
3018                 if (wmt_evt->whdr.flag == 2)
3019                         status = BTMTK_WMT_PATCH_UNDONE;
3020                 else
3021                         status = BTMTK_WMT_PATCH_DONE;
3022                 break;
3023         case BTMTK_WMT_FUNC_CTRL:
3024                 wmt_evt_funcc = (struct btmtk_hci_wmt_evt_funcc *)wmt_evt;
3025                 if (be16_to_cpu(wmt_evt_funcc->status) == 0x404)
3026                         status = BTMTK_WMT_ON_DONE;
3027                 else if (be16_to_cpu(wmt_evt_funcc->status) == 0x420)
3028                         status = BTMTK_WMT_ON_PROGRESS;
3029                 else
3030                         status = BTMTK_WMT_ON_UNDONE;
3031                 break;
3032         }
3033
3034         if (wmt_params->status)
3035                 *wmt_params->status = status;
3036
3037 err_free_skb:
3038         kfree_skb(data->evt_skb);
3039         data->evt_skb = NULL;
3040
3041         return err;
3042 }
3043
3044 static int btusb_mtk_setup_firmware(struct hci_dev *hdev, const char *fwname)
3045 {
3046         struct btmtk_hci_wmt_params wmt_params;
3047         const struct firmware *fw;
3048         const u8 *fw_ptr;
3049         size_t fw_size;
3050         int err, dlen;
3051         u8 flag, param;
3052
3053         err = request_firmware(&fw, fwname, &hdev->dev);
3054         if (err < 0) {
3055                 bt_dev_err(hdev, "Failed to load firmware file (%d)", err);
3056                 return err;
3057         }
3058
3059         /* Power on data RAM the firmware relies on. */
3060         param = 1;
3061         wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3062         wmt_params.flag = 3;
3063         wmt_params.dlen = sizeof(param);
3064         wmt_params.data = &param;
3065         wmt_params.status = NULL;
3066
3067         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3068         if (err < 0) {
3069                 bt_dev_err(hdev, "Failed to power on data RAM (%d)", err);
3070                 return err;
3071         }
3072
3073         fw_ptr = fw->data;
3074         fw_size = fw->size;
3075
3076         /* The size of patch header is 30 bytes, should be skip */
3077         if (fw_size < 30) {
3078                 err = -EINVAL;
3079                 goto err_release_fw;
3080         }
3081
3082         fw_size -= 30;
3083         fw_ptr += 30;
3084         flag = 1;
3085
3086         wmt_params.op = BTMTK_WMT_PATCH_DWNLD;
3087         wmt_params.status = NULL;
3088
3089         while (fw_size > 0) {
3090                 dlen = min_t(int, 250, fw_size);
3091
3092                 /* Tell deivice the position in sequence */
3093                 if (fw_size - dlen <= 0)
3094                         flag = 3;
3095                 else if (fw_size < fw->size - 30)
3096                         flag = 2;
3097
3098                 wmt_params.flag = flag;
3099                 wmt_params.dlen = dlen;
3100                 wmt_params.data = fw_ptr;
3101
3102                 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3103                 if (err < 0) {
3104                         bt_dev_err(hdev, "Failed to send wmt patch dwnld (%d)",
3105                                    err);
3106                         goto err_release_fw;
3107                 }
3108
3109                 fw_size -= dlen;
3110                 fw_ptr += dlen;
3111         }
3112
3113         wmt_params.op = BTMTK_WMT_RST;
3114         wmt_params.flag = 4;
3115         wmt_params.dlen = 0;
3116         wmt_params.data = NULL;
3117         wmt_params.status = NULL;
3118
3119         /* Activate funciton the firmware providing to */
3120         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3121         if (err < 0) {
3122                 bt_dev_err(hdev, "Failed to send wmt rst (%d)", err);
3123                 goto err_release_fw;
3124         }
3125
3126         /* Wait a few moments for firmware activation done */
3127         usleep_range(10000, 12000);
3128
3129 err_release_fw:
3130         release_firmware(fw);
3131
3132         return err;
3133 }
3134
3135 static int btusb_mtk_func_query(struct hci_dev *hdev)
3136 {
3137         struct btmtk_hci_wmt_params wmt_params;
3138         int status, err;
3139         u8 param = 0;
3140
3141         /* Query whether the function is enabled */
3142         wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3143         wmt_params.flag = 4;
3144         wmt_params.dlen = sizeof(param);
3145         wmt_params.data = &param;
3146         wmt_params.status = &status;
3147
3148         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3149         if (err < 0) {
3150                 bt_dev_err(hdev, "Failed to query function status (%d)", err);
3151                 return err;
3152         }
3153
3154         return status;
3155 }
3156
3157 static int btusb_mtk_reg_read(struct btusb_data *data, u32 reg, u32 *val)
3158 {
3159         int pipe, err, size = sizeof(u32);
3160         void *buf;
3161
3162         buf = kzalloc(size, GFP_KERNEL);
3163         if (!buf)
3164                 return -ENOMEM;
3165
3166         pipe = usb_rcvctrlpipe(data->udev, 0);
3167         err = usb_control_msg(data->udev, pipe, 0x63,
3168                               USB_TYPE_VENDOR | USB_DIR_IN,
3169                               reg >> 16, reg & 0xffff,
3170                               buf, size, USB_CTRL_SET_TIMEOUT);
3171         if (err < 0)
3172                 goto err_free_buf;
3173
3174         *val = get_unaligned_le32(buf);
3175
3176 err_free_buf:
3177         kfree(buf);
3178
3179         return err;
3180 }
3181
3182 static int btusb_mtk_id_get(struct btusb_data *data, u32 *id)
3183 {
3184         return btusb_mtk_reg_read(data, 0x80000008, id);
3185 }
3186
3187 static int btusb_mtk_setup(struct hci_dev *hdev)
3188 {
3189         struct btusb_data *data = hci_get_drvdata(hdev);
3190         struct btmtk_hci_wmt_params wmt_params;
3191         ktime_t calltime, delta, rettime;
3192         struct btmtk_tci_sleep tci_sleep;
3193         unsigned long long duration;
3194         struct sk_buff *skb;
3195         const char *fwname;
3196         int err, status;
3197         u32 dev_id;
3198         u8 param;
3199
3200         calltime = ktime_get();
3201
3202         err = btusb_mtk_id_get(data, &dev_id);
3203         if (err < 0) {
3204                 bt_dev_err(hdev, "Failed to get device id (%d)", err);
3205                 return err;
3206         }
3207
3208         switch (dev_id) {
3209         case 0x7663:
3210                 fwname = FIRMWARE_MT7663;
3211                 break;
3212         case 0x7668:
3213                 fwname = FIRMWARE_MT7668;
3214                 break;
3215         default:
3216                 bt_dev_err(hdev, "Unsupported support hardware variant (%08x)",
3217                            dev_id);
3218                 return -ENODEV;
3219         }
3220
3221         /* Query whether the firmware is already download */
3222         wmt_params.op = BTMTK_WMT_SEMAPHORE;
3223         wmt_params.flag = 1;
3224         wmt_params.dlen = 0;
3225         wmt_params.data = NULL;
3226         wmt_params.status = &status;
3227
3228         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3229         if (err < 0) {
3230                 bt_dev_err(hdev, "Failed to query firmware status (%d)", err);
3231                 return err;
3232         }
3233
3234         if (status == BTMTK_WMT_PATCH_DONE) {
3235                 bt_dev_info(hdev, "firmware already downloaded");
3236                 goto ignore_setup_fw;
3237         }
3238
3239         /* Setup a firmware which the device definitely requires */
3240         err = btusb_mtk_setup_firmware(hdev, fwname);
3241         if (err < 0)
3242                 return err;
3243
3244 ignore_setup_fw:
3245         err = readx_poll_timeout(btusb_mtk_func_query, hdev, status,
3246                                  status < 0 || status != BTMTK_WMT_ON_PROGRESS,
3247                                  2000, 5000000);
3248         /* -ETIMEDOUT happens */
3249         if (err < 0)
3250                 return err;
3251
3252         /* The other errors happen in btusb_mtk_func_query */
3253         if (status < 0)
3254                 return status;
3255
3256         if (status == BTMTK_WMT_ON_DONE) {
3257                 bt_dev_info(hdev, "function already on");
3258                 goto ignore_func_on;
3259         }
3260
3261         /* Enable Bluetooth protocol */
3262         param = 1;
3263         wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3264         wmt_params.flag = 0;
3265         wmt_params.dlen = sizeof(param);
3266         wmt_params.data = &param;
3267         wmt_params.status = NULL;
3268
3269         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3270         if (err < 0) {
3271                 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
3272                 return err;
3273         }
3274
3275 ignore_func_on:
3276         /* Apply the low power environment setup */
3277         tci_sleep.mode = 0x5;
3278         tci_sleep.duration = cpu_to_le16(0x640);
3279         tci_sleep.host_duration = cpu_to_le16(0x640);
3280         tci_sleep.host_wakeup_pin = 0;
3281         tci_sleep.time_compensation = 0;
3282
3283         skb = __hci_cmd_sync(hdev, 0xfc7a, sizeof(tci_sleep), &tci_sleep,
3284                              HCI_INIT_TIMEOUT);
3285         if (IS_ERR(skb)) {
3286                 err = PTR_ERR(skb);
3287                 bt_dev_err(hdev, "Failed to apply low power setting (%d)", err);
3288                 return err;
3289         }
3290         kfree_skb(skb);
3291
3292         rettime = ktime_get();
3293         delta = ktime_sub(rettime, calltime);
3294         duration = (unsigned long long)ktime_to_ns(delta) >> 10;
3295
3296         bt_dev_info(hdev, "Device setup in %llu usecs", duration);
3297
3298         return 0;
3299 }
3300
3301 static int btusb_mtk_shutdown(struct hci_dev *hdev)
3302 {
3303         struct btmtk_hci_wmt_params wmt_params;
3304         u8 param = 0;
3305         int err;
3306
3307         /* Disable the device */
3308         wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3309         wmt_params.flag = 0;
3310         wmt_params.dlen = sizeof(param);
3311         wmt_params.data = &param;
3312         wmt_params.status = NULL;
3313
3314         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3315         if (err < 0) {
3316                 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
3317                 return err;
3318         }
3319
3320         return 0;
3321 }
3322
3323 MODULE_FIRMWARE(FIRMWARE_MT7663);
3324 MODULE_FIRMWARE(FIRMWARE_MT7668);
3325
3326 #ifdef CONFIG_PM
3327 /* Configure an out-of-band gpio as wake-up pin, if specified in device tree */
3328 static int marvell_config_oob_wake(struct hci_dev *hdev)
3329 {
3330         struct sk_buff *skb;
3331         struct btusb_data *data = hci_get_drvdata(hdev);
3332         struct device *dev = &data->udev->dev;
3333         u16 pin, gap, opcode;
3334         int ret;
3335         u8 cmd[5];
3336
3337         /* Move on if no wakeup pin specified */
3338         if (of_property_read_u16(dev->of_node, "marvell,wakeup-pin", &pin) ||
3339             of_property_read_u16(dev->of_node, "marvell,wakeup-gap-ms", &gap))
3340                 return 0;
3341
3342         /* Vendor specific command to configure a GPIO as wake-up pin */
3343         opcode = hci_opcode_pack(0x3F, 0x59);
3344         cmd[0] = opcode & 0xFF;
3345         cmd[1] = opcode >> 8;
3346         cmd[2] = 2; /* length of parameters that follow */
3347         cmd[3] = pin;
3348         cmd[4] = gap; /* time in ms, for which wakeup pin should be asserted */
3349
3350         skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
3351         if (!skb) {
3352                 bt_dev_err(hdev, "%s: No memory\n", __func__);
3353                 return -ENOMEM;
3354         }
3355
3356         skb_put_data(skb, cmd, sizeof(cmd));
3357         hci_skb_pkt_type(skb) = HCI_COMMAND_PKT;
3358
3359         ret = btusb_send_frame(hdev, skb);
3360         if (ret) {
3361                 bt_dev_err(hdev, "%s: configuration failed\n", __func__);
3362                 kfree_skb(skb);
3363                 return ret;
3364         }
3365
3366         return 0;
3367 }
3368 #endif
3369
3370 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
3371                                     const bdaddr_t *bdaddr)
3372 {
3373         struct sk_buff *skb;
3374         u8 buf[8];
3375         long ret;
3376
3377         buf[0] = 0xfe;
3378         buf[1] = sizeof(bdaddr_t);
3379         memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
3380
3381         skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
3382         if (IS_ERR(skb)) {
3383                 ret = PTR_ERR(skb);
3384                 bt_dev_err(hdev, "changing Marvell device address failed (%ld)",
3385                            ret);
3386                 return ret;
3387         }
3388         kfree_skb(skb);
3389
3390         return 0;
3391 }
3392
3393 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
3394                                     const bdaddr_t *bdaddr)
3395 {
3396         struct sk_buff *skb;
3397         u8 buf[10];
3398         long ret;
3399
3400         buf[0] = 0x01;
3401         buf[1] = 0x01;
3402         buf[2] = 0x00;
3403         buf[3] = sizeof(bdaddr_t);
3404         memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
3405
3406         skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
3407         if (IS_ERR(skb)) {
3408                 ret = PTR_ERR(skb);
3409                 bt_dev_err(hdev, "Change address command failed (%ld)", ret);
3410                 return ret;
3411         }
3412         kfree_skb(skb);
3413
3414         return 0;
3415 }
3416
3417 static int btusb_set_bdaddr_wcn6855(struct hci_dev *hdev,
3418                                 const bdaddr_t *bdaddr)
3419 {
3420         struct sk_buff *skb;
3421         u8 buf[6];
3422         long ret;
3423
3424         memcpy(buf, bdaddr, sizeof(bdaddr_t));
3425
3426         skb = __hci_cmd_sync_ev(hdev, 0xfc14, sizeof(buf), buf,
3427                                 HCI_EV_CMD_COMPLETE, HCI_INIT_TIMEOUT);
3428         if (IS_ERR(skb)) {
3429                 ret = PTR_ERR(skb);
3430                 bt_dev_err(hdev, "Change address command failed (%ld)", ret);
3431                 return ret;
3432         }
3433         kfree_skb(skb);
3434
3435         return 0;
3436 }
3437
3438 #define QCA_DFU_PACKET_LEN      4096
3439
3440 #define QCA_GET_TARGET_VERSION  0x09
3441 #define QCA_CHECK_STATUS        0x05
3442 #define QCA_DFU_DOWNLOAD        0x01
3443
3444 #define QCA_SYSCFG_UPDATED      0x40
3445 #define QCA_PATCH_UPDATED       0x80
3446 #define QCA_DFU_TIMEOUT         3000
3447
3448 struct qca_version {
3449         __le32  rom_version;
3450         __le32  patch_version;
3451         __le32  ram_version;
3452         __le32  ref_clock;
3453         __u8    reserved[4];
3454 } __packed;
3455
3456 struct qca_rampatch_version {
3457         __le16  rom_version_high;
3458         __le16  rom_version_low;
3459         __le16  patch_version;
3460 } __packed;
3461
3462 struct qca_device_info {
3463         u32     rom_version;
3464         u8      rampatch_hdr;   /* length of header in rampatch */
3465         u8      nvm_hdr;        /* length of header in NVM */
3466         u8      ver_offset;     /* offset of version structure in rampatch */
3467 };
3468
3469 static const struct qca_device_info qca_devices_table[] = {
3470         { 0x00000100, 20, 4,  8 }, /* Rome 1.0 */
3471         { 0x00000101, 20, 4,  8 }, /* Rome 1.1 */
3472         { 0x00000200, 28, 4, 16 }, /* Rome 2.0 */
3473         { 0x00000201, 28, 4, 16 }, /* Rome 2.1 */
3474         { 0x00000300, 28, 4, 16 }, /* Rome 3.0 */
3475         { 0x00000302, 28, 4, 16 }, /* Rome 3.2 */
3476         { 0x00130100, 40, 4, 16 }, /* WCN6855 1.0 */
3477         { 0x00130200, 40, 4, 16 }, /* WCN6855 2.0 */
3478 };
3479
3480 static int btusb_qca_send_vendor_req(struct usb_device *udev, u8 request,
3481                                      void *data, u16 size)
3482 {
3483         int pipe, err;
3484         u8 *buf;
3485
3486         buf = kmalloc(size, GFP_KERNEL);
3487         if (!buf)
3488                 return -ENOMEM;
3489
3490         /* Found some of USB hosts have IOT issues with ours so that we should
3491          * not wait until HCI layer is ready.
3492          */
3493         pipe = usb_rcvctrlpipe(udev, 0);
3494         err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
3495                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
3496         if (err < 0) {
3497                 dev_err(&udev->dev, "Failed to access otp area (%d)", err);
3498                 goto done;
3499         }
3500
3501         memcpy(data, buf, size);
3502
3503 done:
3504         kfree(buf);
3505
3506         return err;
3507 }
3508
3509 static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
3510                                        const struct firmware *firmware,
3511                                        size_t hdr_size)
3512 {
3513         struct btusb_data *btdata = hci_get_drvdata(hdev);
3514         struct usb_device *udev = btdata->udev;
3515         size_t count, size, sent = 0;
3516         int pipe, len, err;
3517         u8 *buf;
3518
3519         buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
3520         if (!buf)
3521                 return -ENOMEM;
3522
3523         count = firmware->size;
3524
3525         size = min_t(size_t, count, hdr_size);
3526         memcpy(buf, firmware->data, size);
3527
3528         /* USB patches should go down to controller through USB path
3529          * because binary format fits to go down through USB channel.
3530          * USB control path is for patching headers and USB bulk is for
3531          * patch body.
3532          */
3533         pipe = usb_sndctrlpipe(udev, 0);
3534         err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
3535                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
3536         if (err < 0) {
3537                 bt_dev_err(hdev, "Failed to send headers (%d)", err);
3538                 goto done;
3539         }
3540
3541         sent += size;
3542         count -= size;
3543
3544         while (count) {
3545                 size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
3546
3547                 memcpy(buf, firmware->data + sent, size);
3548
3549                 pipe = usb_sndbulkpipe(udev, 0x02);
3550                 err = usb_bulk_msg(udev, pipe, buf, size, &len,
3551                                    QCA_DFU_TIMEOUT);
3552                 if (err < 0) {
3553                         bt_dev_err(hdev, "Failed to send body at %zd of %zd (%d)",
3554                                    sent, firmware->size, err);
3555                         break;
3556                 }
3557
3558                 if (size != len) {
3559                         bt_dev_err(hdev, "Failed to get bulk buffer");
3560                         err = -EILSEQ;
3561                         break;
3562                 }
3563
3564                 sent  += size;
3565                 count -= size;
3566         }
3567
3568 done:
3569         kfree(buf);
3570         return err;
3571 }
3572
3573 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
3574                                          struct qca_version *ver,
3575                                          const struct qca_device_info *info)
3576 {
3577         struct qca_rampatch_version *rver;
3578         const struct firmware *fw;
3579         u32 ver_rom, ver_patch, rver_rom;
3580         u16 rver_rom_low, rver_rom_high, rver_patch;
3581         char fwname[64];
3582         int err;
3583
3584         ver_rom = le32_to_cpu(ver->rom_version);
3585         ver_patch = le32_to_cpu(ver->patch_version);
3586
3587         snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom);
3588
3589         err = request_firmware(&fw, fwname, &hdev->dev);
3590         if (err) {
3591                 bt_dev_err(hdev, "failed to request rampatch file: %s (%d)",
3592                            fwname, err);
3593                 return err;
3594         }
3595
3596         bt_dev_info(hdev, "using rampatch file: %s", fwname);
3597
3598         rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
3599         rver_rom_low = le16_to_cpu(rver->rom_version_low);
3600         rver_patch = le16_to_cpu(rver->patch_version);
3601
3602         if (ver_rom & ~0xffffU) {
3603                 rver_rom_high = le16_to_cpu(rver->rom_version_high);
3604                 rver_rom = le32_to_cpu(rver_rom_high << 16 | rver_rom_low);
3605         } else {
3606                 rver_rom = rver_rom_low;
3607         }
3608
3609         bt_dev_info(hdev, "QCA: patch rome 0x%x build 0x%x, "
3610                     "firmware rome 0x%x build 0x%x",
3611                     rver_rom, rver_patch, ver_rom, ver_patch);
3612
3613         if (rver_rom != ver_rom || rver_patch <= ver_patch) {
3614                 bt_dev_err(hdev, "rampatch file version did not match with firmware");
3615                 err = -EINVAL;
3616                 goto done;
3617         }
3618
3619         err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
3620
3621 done:
3622         release_firmware(fw);
3623
3624         return err;
3625 }
3626
3627 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
3628                                     struct qca_version *ver,
3629                                     const struct qca_device_info *info)
3630 {
3631         const struct firmware *fw;
3632         char fwname[64];
3633         int err;
3634
3635         snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x.bin",
3636                  le32_to_cpu(ver->rom_version));
3637
3638         err = request_firmware(&fw, fwname, &hdev->dev);
3639         if (err) {
3640                 bt_dev_err(hdev, "failed to request NVM file: %s (%d)",
3641                            fwname, err);
3642                 return err;
3643         }
3644
3645         bt_dev_info(hdev, "using NVM file: %s", fwname);
3646
3647         err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
3648
3649         release_firmware(fw);
3650
3651         return err;
3652 }
3653
3654 /* identify the ROM version and check whether patches are needed */
3655 static bool btusb_qca_need_patch(struct usb_device *udev)
3656 {
3657         struct qca_version ver;
3658
3659         if (btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3660                                       sizeof(ver)) < 0)
3661                 return false;
3662         /* only low ROM versions need patches */
3663         return !(le32_to_cpu(ver.rom_version) & ~0xffffU);
3664 }
3665
3666 static int btusb_setup_qca(struct hci_dev *hdev)
3667 {
3668         struct btusb_data *btdata = hci_get_drvdata(hdev);
3669         struct usb_device *udev = btdata->udev;
3670         const struct qca_device_info *info = NULL;
3671         struct qca_version ver;
3672         u32 ver_rom;
3673         u8 status;
3674         int i, err;
3675
3676         err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3677                                         sizeof(ver));
3678         if (err < 0)
3679                 return err;
3680
3681         ver_rom = le32_to_cpu(ver.rom_version);
3682
3683         for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
3684                 if (ver_rom == qca_devices_table[i].rom_version)
3685                         info = &qca_devices_table[i];
3686         }
3687         if (!info) {
3688                 bt_dev_err(hdev, "don't support firmware rome 0x%x", ver_rom);
3689                 return -ENODEV;
3690         }
3691
3692         err = btusb_qca_send_vendor_req(udev, QCA_CHECK_STATUS, &status,
3693                                         sizeof(status));
3694         if (err < 0)
3695                 return err;
3696
3697         if (!(status & QCA_PATCH_UPDATED)) {
3698                 err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
3699                 if (err < 0)
3700                         return err;
3701         }
3702
3703         if (!(status & QCA_SYSCFG_UPDATED)) {
3704                 err = btusb_setup_qca_load_nvm(hdev, &ver, info);
3705                 if (err < 0)
3706                         return err;
3707         }
3708
3709         return 0;
3710 }
3711
3712 static inline int __set_diag_interface(struct hci_dev *hdev)
3713 {
3714         struct btusb_data *data = hci_get_drvdata(hdev);
3715         struct usb_interface *intf = data->diag;
3716         int i;
3717
3718         if (!data->diag)
3719                 return -ENODEV;
3720
3721         data->diag_tx_ep = NULL;
3722         data->diag_rx_ep = NULL;
3723
3724         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
3725                 struct usb_endpoint_descriptor *ep_desc;
3726
3727                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
3728
3729                 if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
3730                         data->diag_tx_ep = ep_desc;
3731                         continue;
3732                 }
3733
3734                 if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
3735                         data->diag_rx_ep = ep_desc;
3736                         continue;
3737                 }
3738         }
3739
3740         if (!data->diag_tx_ep || !data->diag_rx_ep) {
3741                 bt_dev_err(hdev, "invalid diagnostic descriptors");
3742                 return -ENODEV;
3743         }
3744
3745         return 0;
3746 }
3747
3748 static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable)
3749 {
3750         struct btusb_data *data = hci_get_drvdata(hdev);
3751         struct sk_buff *skb;
3752         struct urb *urb;
3753         unsigned int pipe;
3754
3755         if (!data->diag_tx_ep)
3756                 return ERR_PTR(-ENODEV);
3757
3758         urb = usb_alloc_urb(0, GFP_KERNEL);
3759         if (!urb)
3760                 return ERR_PTR(-ENOMEM);
3761
3762         skb = bt_skb_alloc(2, GFP_KERNEL);
3763         if (!skb) {
3764                 usb_free_urb(urb);
3765                 return ERR_PTR(-ENOMEM);
3766         }
3767
3768         skb_put_u8(skb, 0xf0);
3769         skb_put_u8(skb, enable);
3770
3771         pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress);
3772
3773         usb_fill_bulk_urb(urb, data->udev, pipe,
3774                           skb->data, skb->len, btusb_tx_complete, skb);
3775
3776         skb->dev = (void *)hdev;
3777
3778         return urb;
3779 }
3780
3781 static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable)
3782 {
3783         struct btusb_data *data = hci_get_drvdata(hdev);
3784         struct urb *urb;
3785
3786         if (!data->diag)
3787                 return -ENODEV;
3788
3789         if (!test_bit(HCI_RUNNING, &hdev->flags))
3790                 return -ENETDOWN;
3791
3792         urb = alloc_diag_urb(hdev, enable);
3793         if (IS_ERR(urb))
3794                 return PTR_ERR(urb);
3795
3796         return submit_or_queue_tx_urb(hdev, urb);
3797 }
3798
3799 #ifdef CONFIG_PM
3800 static irqreturn_t btusb_oob_wake_handler(int irq, void *priv)
3801 {
3802         struct btusb_data *data = priv;
3803
3804         pm_wakeup_event(&data->udev->dev, 0);
3805         pm_system_wakeup();
3806
3807         /* Disable only if not already disabled (keep it balanced) */
3808         if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
3809                 disable_irq_nosync(irq);
3810                 disable_irq_wake(irq);
3811         }
3812         return IRQ_HANDLED;
3813 }
3814
3815 static const struct of_device_id btusb_match_table[] = {
3816         { .compatible = "usb1286,204e" },
3817         { .compatible = "usbcf3,e300" }, /* QCA6174A */
3818         { .compatible = "usb4ca,301a" }, /* QCA6174A (Lite-On) */
3819         { }
3820 };
3821 MODULE_DEVICE_TABLE(of, btusb_match_table);
3822
3823 /* Use an oob wakeup pin? */
3824 static int btusb_config_oob_wake(struct hci_dev *hdev)
3825 {
3826         struct btusb_data *data = hci_get_drvdata(hdev);
3827         struct device *dev = &data->udev->dev;
3828         int irq, ret;
3829
3830         clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
3831
3832         if (!of_match_device(btusb_match_table, dev))
3833                 return 0;
3834
3835         /* Move on if no IRQ specified */
3836         irq = of_irq_get_byname(dev->of_node, "wakeup");
3837         if (irq <= 0) {
3838                 bt_dev_dbg(hdev, "%s: no OOB Wakeup IRQ in DT", __func__);
3839                 return 0;
3840         }
3841
3842         irq_set_status_flags(irq, IRQ_NOAUTOEN);
3843         ret = devm_request_irq(&hdev->dev, irq, btusb_oob_wake_handler,
3844                                0, "OOB Wake-on-BT", data);
3845         if (ret) {
3846                 bt_dev_err(hdev, "%s: IRQ request failed", __func__);
3847                 return ret;
3848         }
3849
3850         ret = device_init_wakeup(dev, true);
3851         if (ret) {
3852                 bt_dev_err(hdev, "%s: failed to init_wakeup", __func__);
3853                 return ret;
3854         }
3855
3856         data->oob_wake_irq = irq;
3857         bt_dev_info(hdev, "OOB Wake-on-BT configured at IRQ %u", irq);
3858         return 0;
3859 }
3860 #endif
3861
3862 static void btusb_check_needs_reset_resume(struct usb_interface *intf)
3863 {
3864         if (dmi_check_system(btusb_needs_reset_resume_table))
3865                 interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME;
3866 }
3867
3868 static bool btusb_prevent_wake(struct hci_dev *hdev)
3869 {
3870         struct btusb_data *data = hci_get_drvdata(hdev);
3871
3872         if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags))
3873                 return true;
3874
3875         return !device_may_wakeup(&data->udev->dev);
3876 }
3877
3878 static int btusb_probe(struct usb_interface *intf,
3879                        const struct usb_device_id *id)
3880 {
3881         struct usb_endpoint_descriptor *ep_desc;
3882         struct gpio_desc *reset_gpio;
3883         struct btusb_data *data;
3884         struct hci_dev *hdev;
3885         unsigned ifnum_base;
3886         int i, err;
3887
3888         BT_DBG("intf %p id %p", intf, id);
3889
3890         /* interface numbers are hardcoded in the spec */
3891         if (intf->cur_altsetting->desc.bInterfaceNumber != 0) {
3892                 if (!(id->driver_info & BTUSB_IFNUM_2))
3893                         return -ENODEV;
3894                 if (intf->cur_altsetting->desc.bInterfaceNumber != 2)
3895                         return -ENODEV;
3896         }
3897
3898         ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber;
3899
3900         if (!id->driver_info) {
3901                 const struct usb_device_id *match;
3902
3903                 match = usb_match_id(intf, blacklist_table);
3904                 if (match)
3905                         id = match;
3906         }
3907
3908         if (id->driver_info == BTUSB_IGNORE)
3909                 return -ENODEV;
3910
3911         if (id->driver_info & BTUSB_ATH3012) {
3912                 struct usb_device *udev = interface_to_usbdev(intf);
3913
3914                 /* Old firmware would otherwise let ath3k driver load
3915                  * patch and sysconfig files
3916                  */
3917                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001 &&
3918                     !btusb_qca_need_patch(udev))
3919                         return -ENODEV;
3920         }
3921
3922         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
3923         if (!data)
3924                 return -ENOMEM;
3925
3926         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
3927                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
3928
3929                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
3930                         data->intr_ep = ep_desc;
3931                         continue;
3932                 }
3933
3934                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
3935                         data->bulk_tx_ep = ep_desc;
3936                         continue;
3937                 }
3938
3939                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
3940                         data->bulk_rx_ep = ep_desc;
3941                         continue;
3942                 }
3943         }
3944
3945         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
3946                 return -ENODEV;
3947
3948         if (id->driver_info & BTUSB_AMP) {
3949                 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
3950                 data->cmdreq = 0x2b;
3951         } else {
3952                 data->cmdreq_type = USB_TYPE_CLASS;
3953                 data->cmdreq = 0x00;
3954         }
3955
3956         data->udev = interface_to_usbdev(intf);
3957         data->intf = intf;
3958
3959         INIT_WORK(&data->work, btusb_work);
3960         INIT_WORK(&data->waker, btusb_waker);
3961         init_usb_anchor(&data->deferred);
3962         init_usb_anchor(&data->tx_anchor);
3963         spin_lock_init(&data->txlock);
3964
3965         init_usb_anchor(&data->intr_anchor);
3966         init_usb_anchor(&data->bulk_anchor);
3967         init_usb_anchor(&data->isoc_anchor);
3968         init_usb_anchor(&data->diag_anchor);
3969         init_usb_anchor(&data->ctrl_anchor);
3970         spin_lock_init(&data->rxlock);
3971
3972         if (id->driver_info & BTUSB_INTEL_NEW) {
3973                 data->recv_event = btusb_recv_event_intel;
3974                 data->recv_bulk = btusb_recv_bulk_intel;
3975                 set_bit(BTUSB_BOOTLOADER, &data->flags);
3976         } else {
3977                 data->recv_event = hci_recv_frame;
3978                 data->recv_bulk = btusb_recv_bulk;
3979         }
3980
3981         hdev = hci_alloc_dev();
3982         if (!hdev)
3983                 return -ENOMEM;
3984
3985         hdev->bus = HCI_USB;
3986         hci_set_drvdata(hdev, data);
3987
3988         if (id->driver_info & BTUSB_AMP)
3989                 hdev->dev_type = HCI_AMP;
3990         else
3991                 hdev->dev_type = HCI_PRIMARY;
3992
3993         data->hdev = hdev;
3994
3995         SET_HCIDEV_DEV(hdev, &intf->dev);
3996
3997         reset_gpio = gpiod_get_optional(&data->udev->dev, "reset",
3998                                         GPIOD_OUT_LOW);
3999         if (IS_ERR(reset_gpio)) {
4000                 err = PTR_ERR(reset_gpio);
4001                 goto out_free_dev;
4002         } else if (reset_gpio) {
4003                 data->reset_gpio = reset_gpio;
4004         }
4005
4006         hdev->open   = btusb_open;
4007         hdev->close  = btusb_close;
4008         hdev->flush  = btusb_flush;
4009         hdev->send   = btusb_send_frame;
4010         hdev->notify = btusb_notify;
4011         hdev->prevent_wake = btusb_prevent_wake;
4012
4013 #ifdef CONFIG_PM
4014         err = btusb_config_oob_wake(hdev);
4015         if (err)
4016                 goto out_free_dev;
4017
4018         /* Marvell devices may need a specific chip configuration */
4019         if (id->driver_info & BTUSB_MARVELL && data->oob_wake_irq) {
4020                 err = marvell_config_oob_wake(hdev);
4021                 if (err)
4022                         goto out_free_dev;
4023         }
4024 #endif
4025         if (id->driver_info & BTUSB_CW6622)
4026                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
4027
4028         if (id->driver_info & BTUSB_BCM2045)
4029                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
4030
4031         if (id->driver_info & BTUSB_BCM92035)
4032                 hdev->setup = btusb_setup_bcm92035;
4033
4034         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) &&
4035             (id->driver_info & BTUSB_BCM_PATCHRAM)) {
4036                 hdev->manufacturer = 15;
4037                 hdev->setup = btbcm_setup_patchram;
4038                 hdev->set_diag = btusb_bcm_set_diag;
4039                 hdev->set_bdaddr = btbcm_set_bdaddr;
4040
4041                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
4042                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
4043         }
4044
4045         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) &&
4046             (id->driver_info & BTUSB_BCM_APPLE)) {
4047                 hdev->manufacturer = 15;
4048                 hdev->setup = btbcm_setup_apple;
4049                 hdev->set_diag = btusb_bcm_set_diag;
4050
4051                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
4052                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
4053         }
4054
4055         if (id->driver_info & BTUSB_INTEL) {
4056                 hdev->manufacturer = 2;
4057                 hdev->setup = btusb_setup_intel;
4058                 hdev->shutdown = btusb_shutdown_intel;
4059                 hdev->set_diag = btintel_set_diag_mfg;
4060                 hdev->set_bdaddr = btintel_set_bdaddr;
4061                 hdev->cmd_timeout = btusb_intel_cmd_timeout;
4062                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
4063                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4064                 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
4065         }
4066
4067         if (id->driver_info & BTUSB_INTEL_NEW) {
4068                 hdev->manufacturer = 2;
4069                 hdev->send = btusb_send_frame_intel;
4070                 hdev->setup = btusb_setup_intel_new;
4071                 hdev->shutdown = btusb_shutdown_intel_new;
4072                 hdev->hw_error = btintel_hw_error;
4073                 hdev->set_diag = btintel_set_diag;
4074                 hdev->set_bdaddr = btintel_set_bdaddr;
4075                 hdev->cmd_timeout = btusb_intel_cmd_timeout;
4076                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
4077                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4078                 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
4079         }
4080
4081         if (id->driver_info & BTUSB_MARVELL)
4082                 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
4083
4084         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_MTK) &&
4085             (id->driver_info & BTUSB_MEDIATEK)) {
4086                 hdev->setup = btusb_mtk_setup;
4087                 hdev->shutdown = btusb_mtk_shutdown;
4088                 hdev->manufacturer = 70;
4089                 set_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks);
4090         }
4091
4092         if (id->driver_info & BTUSB_SWAVE) {
4093                 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
4094                 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
4095         }
4096
4097         if (id->driver_info & BTUSB_INTEL_BOOT) {
4098                 hdev->manufacturer = 2;
4099                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
4100         }
4101
4102         if (id->driver_info & BTUSB_ATH3012) {
4103                 data->setup_on_usb = btusb_setup_qca;
4104                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
4105                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4106                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
4107         }
4108
4109         if (id->driver_info & BTUSB_QCA_ROME) {
4110                 data->setup_on_usb = btusb_setup_qca;
4111                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
4112                 hdev->cmd_timeout = btusb_qca_cmd_timeout;
4113                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4114                 btusb_check_needs_reset_resume(intf);
4115         }
4116
4117         if (id->driver_info & BTUSB_QCA_WCN6855) {
4118                 data->setup_on_usb = btusb_setup_qca;
4119                 hdev->set_bdaddr = btusb_set_bdaddr_wcn6855;
4120                 hdev->cmd_timeout = btusb_qca_cmd_timeout;
4121                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4122         }
4123
4124         if (id->driver_info & BTUSB_AMP) {
4125                 /* AMP controllers do not support SCO packets */
4126                 data->isoc = NULL;
4127         } else {
4128                 /* Interface orders are hardcoded in the specification */
4129                 data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1);
4130                 data->isoc_ifnum = ifnum_base + 1;
4131         }
4132
4133         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_RTL) &&
4134             (id->driver_info & BTUSB_REALTEK)) {
4135                 hdev->setup = btrtl_setup_realtek;
4136                 hdev->shutdown = btrtl_shutdown_realtek;
4137                 hdev->cmd_timeout = btusb_rtl_cmd_timeout;
4138
4139                 /* Realtek devices lose their updated firmware over global
4140                  * suspend that means host doesn't send SET_FEATURE
4141                  * (DEVICE_REMOTE_WAKEUP)
4142                  */
4143                 set_bit(BTUSB_WAKEUP_DISABLE, &data->flags);
4144                 if (btusb_find_altsetting(data, 1))
4145                         set_bit(BTUSB_USE_ALT1_FOR_WBS, &data->flags);
4146                 else
4147                         bt_dev_err(hdev, "Device does not support ALT setting 1");
4148         }
4149
4150         if (!reset)
4151                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
4152
4153         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
4154                 if (!disable_scofix)
4155                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
4156         }
4157
4158         if (id->driver_info & BTUSB_BROKEN_ISOC)
4159                 data->isoc = NULL;
4160
4161         if (id->driver_info & BTUSB_WIDEBAND_SPEECH)
4162                 set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED, &hdev->quirks);
4163
4164         if (id->driver_info & BTUSB_VALID_LE_STATES)
4165                 set_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks);
4166
4167         if (id->driver_info & BTUSB_DIGIANSWER) {
4168                 data->cmdreq_type = USB_TYPE_VENDOR;
4169                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
4170         }
4171
4172         if (id->driver_info & BTUSB_CSR) {
4173                 struct usb_device *udev = data->udev;
4174                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
4175
4176                 /* Old firmware would otherwise execute USB reset */
4177                 if (bcdDevice < 0x117)
4178                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
4179
4180                 /* This must be set first in case we disable it for fakes */
4181                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
4182
4183                 /* Fake CSR devices with broken commands */
4184                 if (le16_to_cpu(udev->descriptor.idVendor)  == 0x0a12 &&
4185                     le16_to_cpu(udev->descriptor.idProduct) == 0x0001)
4186                         hdev->setup = btusb_setup_csr;
4187         }
4188
4189         if (id->driver_info & BTUSB_SNIFFER) {
4190                 struct usb_device *udev = data->udev;
4191
4192                 /* New sniffer firmware has crippled HCI interface */
4193                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
4194                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
4195         }
4196
4197         if (id->driver_info & BTUSB_INTEL_BOOT) {
4198                 /* A bug in the bootloader causes that interrupt interface is
4199                  * only enabled after receiving SetInterface(0, AltSetting=0).
4200                  */
4201                 err = usb_set_interface(data->udev, 0, 0);
4202                 if (err < 0) {
4203                         BT_ERR("failed to set interface 0, alt 0 %d", err);
4204                         goto out_free_dev;
4205                 }
4206         }
4207
4208         if (data->isoc) {
4209                 err = usb_driver_claim_interface(&btusb_driver,
4210                                                  data->isoc, data);
4211                 if (err < 0)
4212                         goto out_free_dev;
4213         }
4214
4215         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) && data->diag) {
4216                 if (!usb_driver_claim_interface(&btusb_driver,
4217                                                 data->diag, data))
4218                         __set_diag_interface(hdev);
4219                 else
4220                         data->diag = NULL;
4221         }
4222
4223         if (enable_autosuspend)
4224                 usb_enable_autosuspend(data->udev);
4225
4226         err = hci_register_dev(hdev);
4227         if (err < 0)
4228                 goto out_free_dev;
4229
4230         usb_set_intfdata(intf, data);
4231
4232         return 0;
4233
4234 out_free_dev:
4235         if (data->reset_gpio)
4236                 gpiod_put(data->reset_gpio);
4237         hci_free_dev(hdev);
4238         return err;
4239 }
4240
4241 static void btusb_disconnect(struct usb_interface *intf)
4242 {
4243         struct btusb_data *data = usb_get_intfdata(intf);
4244         struct hci_dev *hdev;
4245
4246         BT_DBG("intf %p", intf);
4247
4248         if (!data)
4249                 return;
4250
4251         hdev = data->hdev;
4252         usb_set_intfdata(data->intf, NULL);
4253
4254         if (data->isoc)
4255                 usb_set_intfdata(data->isoc, NULL);
4256
4257         if (data->diag)
4258                 usb_set_intfdata(data->diag, NULL);
4259
4260         hci_unregister_dev(hdev);
4261
4262         if (intf == data->intf) {
4263                 if (data->isoc)
4264                         usb_driver_release_interface(&btusb_driver, data->isoc);
4265                 if (data->diag)
4266                         usb_driver_release_interface(&btusb_driver, data->diag);
4267         } else if (intf == data->isoc) {
4268                 if (data->diag)
4269                         usb_driver_release_interface(&btusb_driver, data->diag);
4270                 usb_driver_release_interface(&btusb_driver, data->intf);
4271         } else if (intf == data->diag) {
4272                 usb_driver_release_interface(&btusb_driver, data->intf);
4273                 if (data->isoc)
4274                         usb_driver_release_interface(&btusb_driver, data->isoc);
4275         }
4276
4277         if (data->oob_wake_irq)
4278                 device_init_wakeup(&data->udev->dev, false);
4279
4280         if (data->reset_gpio)
4281                 gpiod_put(data->reset_gpio);
4282
4283         hci_free_dev(hdev);
4284 }
4285
4286 #ifdef CONFIG_PM
4287 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
4288 {
4289         struct btusb_data *data = usb_get_intfdata(intf);
4290
4291         BT_DBG("intf %p", intf);
4292
4293         if (data->suspend_count++)
4294                 return 0;
4295
4296         spin_lock_irq(&data->txlock);
4297         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
4298                 set_bit(BTUSB_SUSPENDING, &data->flags);
4299                 spin_unlock_irq(&data->txlock);
4300         } else {
4301                 spin_unlock_irq(&data->txlock);
4302                 data->suspend_count--;
4303                 return -EBUSY;
4304         }
4305
4306         cancel_work_sync(&data->work);
4307
4308         btusb_stop_traffic(data);
4309         usb_kill_anchored_urbs(&data->tx_anchor);
4310
4311         if (data->oob_wake_irq && device_may_wakeup(&data->udev->dev)) {
4312                 set_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
4313                 enable_irq_wake(data->oob_wake_irq);
4314                 enable_irq(data->oob_wake_irq);
4315         }
4316
4317         /* For global suspend, Realtek devices lose the loaded fw
4318          * in them. But for autosuspend, firmware should remain.
4319          * Actually, it depends on whether the usb host sends
4320          * set feature (enable wakeup) or not.
4321          */
4322         if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags)) {
4323                 if (PMSG_IS_AUTO(message) &&
4324                     device_can_wakeup(&data->udev->dev))
4325                         data->udev->do_remote_wakeup = 1;
4326                 else if (!PMSG_IS_AUTO(message))
4327                         data->udev->reset_resume = 1;
4328         }
4329
4330         return 0;
4331 }
4332
4333 static void play_deferred(struct btusb_data *data)
4334 {
4335         struct urb *urb;
4336         int err;
4337
4338         while ((urb = usb_get_from_anchor(&data->deferred))) {
4339                 usb_anchor_urb(urb, &data->tx_anchor);
4340
4341                 err = usb_submit_urb(urb, GFP_ATOMIC);
4342                 if (err < 0) {
4343                         if (err != -EPERM && err != -ENODEV)
4344                                 BT_ERR("%s urb %p submission failed (%d)",
4345                                        data->hdev->name, urb, -err);
4346                         kfree(urb->setup_packet);
4347                         usb_unanchor_urb(urb);
4348                         usb_free_urb(urb);
4349                         break;
4350                 }
4351
4352                 data->tx_in_flight++;
4353                 usb_free_urb(urb);
4354         }
4355
4356         /* Cleanup the rest deferred urbs. */
4357         while ((urb = usb_get_from_anchor(&data->deferred))) {
4358                 kfree(urb->setup_packet);
4359                 usb_free_urb(urb);
4360         }
4361 }
4362
4363 static int btusb_resume(struct usb_interface *intf)
4364 {
4365         struct btusb_data *data = usb_get_intfdata(intf);
4366         struct hci_dev *hdev = data->hdev;
4367         int err = 0;
4368
4369         BT_DBG("intf %p", intf);
4370
4371         if (--data->suspend_count)
4372                 return 0;
4373
4374         /* Disable only if not already disabled (keep it balanced) */
4375         if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
4376                 disable_irq(data->oob_wake_irq);
4377                 disable_irq_wake(data->oob_wake_irq);
4378         }
4379
4380         if (!test_bit(HCI_RUNNING, &hdev->flags))
4381                 goto done;
4382
4383         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
4384                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
4385                 if (err < 0) {
4386                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
4387                         goto failed;
4388                 }
4389         }
4390
4391         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
4392                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
4393                 if (err < 0) {
4394                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
4395                         goto failed;
4396                 }
4397
4398                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
4399         }
4400
4401         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
4402                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
4403                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
4404                 else
4405                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
4406         }
4407
4408         spin_lock_irq(&data->txlock);
4409         play_deferred(data);
4410         clear_bit(BTUSB_SUSPENDING, &data->flags);
4411         spin_unlock_irq(&data->txlock);
4412         schedule_work(&data->work);
4413
4414         return 0;
4415
4416 failed:
4417         usb_scuttle_anchored_urbs(&data->deferred);
4418 done:
4419         spin_lock_irq(&data->txlock);
4420         clear_bit(BTUSB_SUSPENDING, &data->flags);
4421         spin_unlock_irq(&data->txlock);
4422
4423         return err;
4424 }
4425 #endif
4426
4427 static struct usb_driver btusb_driver = {
4428         .name           = "btusb",
4429         .probe          = btusb_probe,
4430         .disconnect     = btusb_disconnect,
4431 #ifdef CONFIG_PM
4432         .suspend        = btusb_suspend,
4433         .resume         = btusb_resume,
4434 #endif
4435         .id_table       = btusb_table,
4436         .supports_autosuspend = 1,
4437         .disable_hub_initiated_lpm = 1,
4438 };
4439
4440 module_usb_driver(btusb_driver);
4441
4442 module_param(disable_scofix, bool, 0644);
4443 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
4444
4445 module_param(force_scofix, bool, 0644);
4446 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
4447
4448 module_param(enable_autosuspend, bool, 0644);
4449 MODULE_PARM_DESC(enable_autosuspend, "Enable USB autosuspend by default");
4450
4451 module_param(reset, bool, 0644);
4452 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
4453
4454 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
4455 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
4456 MODULE_VERSION(VERSION);
4457 MODULE_LICENSE("GPL");