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
  62 static const struct usb_device_id btusb_table[] = {
  63         /* Generic Bluetooth USB device */
  64         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  65
  66         /* Generic Bluetooth AMP device */
  67         { USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP },
  68
  69         /* Generic Bluetooth USB interface */
  70         { USB_INTERFACE_INFO(0xe0, 0x01, 0x01) },
  71
  72         /* Apple-specific (Broadcom) devices */
  73         { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01),
  74           .driver_info = BTUSB_BCM_APPLE | BTUSB_IFNUM_2 },
  75
  76         /* MediaTek MT76x0E */
  77         { USB_DEVICE(0x0e8d, 0x763f) },
  78
  79         /* Broadcom SoftSailing reporting vendor specific */
  80         { USB_DEVICE(0x0a5c, 0x21e1) },
  81
  82         /* Apple MacBookPro 7,1 */
  83         { USB_DEVICE(0x05ac, 0x8213) },
  84
  85         /* Apple iMac11,1 */
  86         { USB_DEVICE(0x05ac, 0x8215) },
  87
  88         /* Apple MacBookPro6,2 */
  89         { USB_DEVICE(0x05ac, 0x8218) },
  90
  91         /* Apple MacBookAir3,1, MacBookAir3,2 */
  92         { USB_DEVICE(0x05ac, 0x821b) },
  93
  94         /* Apple MacBookAir4,1 */
  95         { USB_DEVICE(0x05ac, 0x821f) },
  96
  97         /* Apple MacBookPro8,2 */
  98         { USB_DEVICE(0x05ac, 0x821a) },
  99
 100         /* Apple MacMini5,1 */
 101         { USB_DEVICE(0x05ac, 0x8281) },
 102
 103         /* AVM BlueFRITZ! USB v2.0 */
 104         { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE },
 105
 106         /* Bluetooth Ultraport Module from IBM */
 107         { USB_DEVICE(0x04bf, 0x030a) },
 108
 109         /* ALPS Modules with non-standard id */
 110         { USB_DEVICE(0x044e, 0x3001) },
 111         { USB_DEVICE(0x044e, 0x3002) },
 112
 113         /* Ericsson with non-standard id */
 114         { USB_DEVICE(0x0bdb, 0x1002) },
 115
 116         /* Canyon CN-BTU1 with HID interfaces */
 117         { USB_DEVICE(0x0c10, 0x0000) },
 118
 119         /* Broadcom BCM20702A0 */
 120         { USB_DEVICE(0x413c, 0x8197) },
 121
 122         /* Broadcom BCM20702B0 (Dynex/Insignia) */
 123         { USB_DEVICE(0x19ff, 0x0239), .driver_info = BTUSB_BCM_PATCHRAM },
 124
 125         /* Broadcom BCM43142A0 (Foxconn/Lenovo) */
 126         { USB_VENDOR_AND_INTERFACE_INFO(0x105b, 0xff, 0x01, 0x01),
 127           .driver_info = BTUSB_BCM_PATCHRAM },
 128
 129         /* Broadcom BCM920703 (HTC Vive) */
 130         { USB_VENDOR_AND_INTERFACE_INFO(0x0bb4, 0xff, 0x01, 0x01),
 131           .driver_info = BTUSB_BCM_PATCHRAM },
 132
 133         /* Foxconn - Hon Hai */
 134         { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01),
 135           .driver_info = BTUSB_BCM_PATCHRAM },
 136
 137         /* Lite-On Technology - Broadcom based */
 138         { USB_VENDOR_AND_INTERFACE_INFO(0x04ca, 0xff, 0x01, 0x01),
 139           .driver_info = BTUSB_BCM_PATCHRAM },
 140
 141         /* Broadcom devices with vendor specific id */
 142         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
 143           .driver_info = BTUSB_BCM_PATCHRAM },
 144
 145         /* ASUSTek Computer - Broadcom based */
 146         { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01),
 147           .driver_info = BTUSB_BCM_PATCHRAM },
 148
 149         /* Belkin F8065bf - Broadcom based */
 150         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01),
 151           .driver_info = BTUSB_BCM_PATCHRAM },
 152
 153         /* IMC Networks - Broadcom based */
 154         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01),
 155           .driver_info = BTUSB_BCM_PATCHRAM },
 156
 157         /* Dell Computer - Broadcom based  */
 158         { USB_VENDOR_AND_INTERFACE_INFO(0x413c, 0xff, 0x01, 0x01),
 159           .driver_info = BTUSB_BCM_PATCHRAM },
 160
 161         /* Toshiba Corp - Broadcom based */
 162         { USB_VENDOR_AND_INTERFACE_INFO(0x0930, 0xff, 0x01, 0x01),
 163           .driver_info = BTUSB_BCM_PATCHRAM },
 164
 165         /* Intel Bluetooth USB Bootloader (RAM module) */
 166         { USB_DEVICE(0x8087, 0x0a5a),
 167           .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
 168
 169         { }     /* Terminating entry */
 170 };
 171
 172 MODULE_DEVICE_TABLE(usb, btusb_table);
 173
 174 static const struct usb_device_id blacklist_table[] = {
 175         /* CSR BlueCore devices */
 176         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 177
 178         /* Broadcom BCM2033 without firmware */
 179         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 180
 181         /* Broadcom BCM2045 devices */
 182         { USB_DEVICE(0x0a5c, 0x2045), .driver_info = BTUSB_BCM2045 },
 183
 184         /* Atheros 3011 with sflash firmware */
 185         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 186         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 187         { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE },
 188         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 189         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 190         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 191         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 192
 193         /* Atheros AR9285 Malbec with sflash firmware */
 194         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 195
 196         /* Atheros 3012 with sflash firmware */
 197         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 198         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 199         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 200         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 201         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 202         { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
 203         { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
 204         { USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 },
 205         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 206         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 207         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 208         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 209         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 210         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 211         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 212         { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
 213         { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
 214         { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
 215         { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 },
 216         { USB_DEVICE(0x04ca, 0x3018), .driver_info = BTUSB_ATH3012 },
 217         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 218         { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
 219         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 220         { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
 221         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 222         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 223         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 224         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 225         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 226         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
 227         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 228         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 229         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 230         { USB_DEVICE(0x0cf3, 0x817b), .driver_info = BTUSB_ATH3012 },
 231         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 232         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 233         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 234         { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 },
 235         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 236         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 237         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 238         { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 },
 239         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 240         { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
 241         { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
 242         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
 243         { USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 },
 244         { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
 245         { USB_DEVICE(0x13d3, 0x3487), .driver_info = BTUSB_ATH3012 },
 246         { USB_DEVICE(0x13d3, 0x3490), .driver_info = BTUSB_ATH3012 },
 247
 248         /* Atheros AR5BBU12 with sflash firmware */
 249         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 250
 251         /* Atheros AR5BBU12 with sflash firmware */
 252         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 253         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 254
 255         /* QCA ROME chipset */
 256         { USB_DEVICE(0x0cf3, 0x535b), .driver_info = BTUSB_QCA_ROME },
 257         { USB_DEVICE(0x0cf3, 0xe007), .driver_info = BTUSB_QCA_ROME },
 258         { USB_DEVICE(0x0cf3, 0xe009), .driver_info = BTUSB_QCA_ROME },
 259         { USB_DEVICE(0x0cf3, 0xe010), .driver_info = BTUSB_QCA_ROME },
 260         { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME },
 261         { USB_DEVICE(0x0cf3, 0xe301), .driver_info = BTUSB_QCA_ROME },
 262         { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME },
 263         { USB_DEVICE(0x0489, 0xe092), .driver_info = BTUSB_QCA_ROME },
 264         { USB_DEVICE(0x0489, 0xe09f), .driver_info = BTUSB_QCA_ROME },
 265         { USB_DEVICE(0x0489, 0xe0a2), .driver_info = BTUSB_QCA_ROME },
 266         { USB_DEVICE(0x04ca, 0x3011), .driver_info = BTUSB_QCA_ROME },
 267         { USB_DEVICE(0x04ca, 0x3015), .driver_info = BTUSB_QCA_ROME },
 268         { USB_DEVICE(0x04ca, 0x3016), .driver_info = BTUSB_QCA_ROME },
 269         { USB_DEVICE(0x04ca, 0x301a), .driver_info = BTUSB_QCA_ROME },
 270         { USB_DEVICE(0x04ca, 0x3021), .driver_info = BTUSB_QCA_ROME },
 271         { USB_DEVICE(0x13d3, 0x3491), .driver_info = BTUSB_QCA_ROME },
 272         { USB_DEVICE(0x13d3, 0x3496), .driver_info = BTUSB_QCA_ROME },
 273         { USB_DEVICE(0x13d3, 0x3501), .driver_info = BTUSB_QCA_ROME },
 274
 275         /* Broadcom BCM2035 */
 276         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 277         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 278         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 279
 280         /* Broadcom BCM2045 */
 281         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 282         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 283
 284         /* IBM/Lenovo ThinkPad with Broadcom chip */
 285         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 286         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 287
 288         /* HP laptop with Broadcom chip */
 289         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 290
 291         /* Dell laptop with Broadcom chip */
 292         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 293
 294         /* Dell Wireless 370 and 410 devices */
 295         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 296         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 297
 298         /* Belkin F8T012 and F8T013 devices */
 299         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 300         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 301
 302         /* Asus WL-BTD202 device */
 303         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 304
 305         /* Kensington Bluetooth USB adapter */
 306         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 307
 308         /* RTX Telecom based adapters with buggy SCO support */
 309         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 310         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 311
 312         /* CONWISE Technology based adapters with buggy SCO support */
 313         { USB_DEVICE(0x0e5e, 0x6622),
 314           .driver_info = BTUSB_BROKEN_ISOC | BTUSB_CW6622},
 315
 316         /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
 317         { USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE },
 318
 319         /* Digianswer devices */
 320         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 321         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 322
 323         /* CSR BlueCore Bluetooth Sniffer */
 324         { USB_DEVICE(0x0a12, 0x0002),
 325           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 326
 327         /* Frontline ComProbe Bluetooth Sniffer */
 328         { USB_DEVICE(0x16d3, 0x0002),
 329           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 330
 331         /* Marvell Bluetooth devices */
 332         { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
 333         { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
 334         { USB_DEVICE(0x1286, 0x204e), .driver_info = BTUSB_MARVELL },
 335
 336         /* Intel Bluetooth devices */
 337         { USB_DEVICE(0x8087, 0x0025), .driver_info = BTUSB_INTEL_NEW |
 338                                                      BTUSB_WIDEBAND_SPEECH },
 339         { USB_DEVICE(0x8087, 0x0026), .driver_info = BTUSB_INTEL_NEW |
 340                                                      BTUSB_WIDEBAND_SPEECH },
 341         { USB_DEVICE(0x8087, 0x0029), .driver_info = BTUSB_INTEL_NEW |
 342                                                      BTUSB_WIDEBAND_SPEECH },
 343         { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR },
 344         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 345         { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
 346         { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_NEW |
 347                                                      BTUSB_WIDEBAND_SPEECH },
 348         { USB_DEVICE(0x8087, 0x0aa7), .driver_info = BTUSB_INTEL |
 349                                                      BTUSB_WIDEBAND_SPEECH },
 350         { USB_DEVICE(0x8087, 0x0aaa), .driver_info = BTUSB_INTEL_NEW |
 351                                                      BTUSB_WIDEBAND_SPEECH },
 352
 353         /* Other Intel Bluetooth devices */
 354         { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01),
 355           .driver_info = BTUSB_IGNORE },
 356
 357         /* Realtek Bluetooth devices */
 358         { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01),
 359           .driver_info = BTUSB_REALTEK },
 360
 361         /* MediaTek Bluetooth devices */
 362         { USB_VENDOR_AND_INTERFACE_INFO(0x0e8d, 0xe0, 0x01, 0x01),
 363           .driver_info = BTUSB_MEDIATEK },
 364
 365         /* Additional Realtek 8723AE Bluetooth devices */
 366         { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK },
 367         { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK },
 368
 369         /* Additional Realtek 8723BE Bluetooth devices */
 370         { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK },
 371         { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK },
 372         { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
 373         { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
 374         { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },
 375         { USB_DEVICE(0x13d3, 0x3494), .driver_info = BTUSB_REALTEK },
 376
 377         /* Additional Realtek 8723BU Bluetooth devices */
 378         { USB_DEVICE(0x7392, 0xa611), .driver_info = BTUSB_REALTEK },
 379
 380         /* Additional Realtek 8723DE Bluetooth devices */
 381         { USB_DEVICE(0x0bda, 0xb009), .driver_info = BTUSB_REALTEK },
 382         { USB_DEVICE(0x2ff8, 0xb011), .driver_info = BTUSB_REALTEK },
 383
 384         /* Additional Realtek 8821AE Bluetooth devices */
 385         { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
 386         { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },
 387         { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK },
 388         { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK },
 389         { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK },
 390
 391         /* Additional Realtek 8822BE Bluetooth devices */
 392         { USB_DEVICE(0x13d3, 0x3526), .driver_info = BTUSB_REALTEK },
 393         { USB_DEVICE(0x0b05, 0x185c), .driver_info = BTUSB_REALTEK },
 394
 395         /* Additional Realtek 8822CE Bluetooth devices */
 396         { USB_DEVICE(0x04ca, 0x4005), .driver_info = BTUSB_REALTEK },
 397         { USB_DEVICE(0x13d3, 0x3548), .driver_info = BTUSB_REALTEK },
 398
 399         /* Silicon Wave based devices */
 400         { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE },
 401
 402         { }     /* Terminating entry */
 403 };
 404
 405 /* The Bluetooth USB module build into some devices needs to be reset on resume,
 406  * this is a problem with the platform (likely shutting off all power) not with
 407  * the module itself. So we use a DMI list to match known broken platforms.
 408  */
 409 static const struct dmi_system_id btusb_needs_reset_resume_table[] = {
 410         {
 411                 /* Dell OptiPlex 3060 (QCA ROME device 0cf3:e007) */
 412                 .matches = {
 413                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 414                         DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 3060"),
 415                 },
 416         },
 417         {
 418                 /* Dell XPS 9360 (QCA ROME device 0cf3:e300) */
 419                 .matches = {
 420                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 421                         DMI_MATCH(DMI_PRODUCT_NAME, "XPS 13 9360"),
 422                 },
 423         },
 424         {
 425                 /* Dell Inspiron 5565 (QCA ROME device 0cf3:e009) */
 426                 .matches = {
 427                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 428                         DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5565"),
 429                 },
 430         },
 431         {}
 432 };
 433
 434 #define BTUSB_MAX_ISOC_FRAMES   10
 435
 436 #define BTUSB_INTR_RUNNING      0
 437 #define BTUSB_BULK_RUNNING      1
 438 #define BTUSB_ISOC_RUNNING      2
 439 #define BTUSB_SUSPENDING        3
 440 #define BTUSB_DID_ISO_RESUME    4
 441 #define BTUSB_BOOTLOADER        5
 442 #define BTUSB_DOWNLOADING       6
 443 #define BTUSB_FIRMWARE_LOADED   7
 444 #define BTUSB_FIRMWARE_FAILED   8
 445 #define BTUSB_BOOTING           9
 446 #define BTUSB_DIAG_RUNNING      10
 447 #define BTUSB_OOB_WAKE_ENABLED  11
 448 #define BTUSB_HW_RESET_ACTIVE   12
 449 #define BTUSB_TX_WAIT_VND_EVT   13
 450 #define BTUSB_WAKEUP_DISABLE    14
 451
 452 struct btusb_data {
 453         struct hci_dev       *hdev;
 454         struct usb_device    *udev;
 455         struct usb_interface *intf;
 456         struct usb_interface *isoc;
 457         struct usb_interface *diag;
 458         unsigned isoc_ifnum;
 459
 460         unsigned long flags;
 461
 462         struct work_struct work;
 463         struct work_struct waker;
 464
 465         struct usb_anchor deferred;
 466         struct usb_anchor tx_anchor;
 467         int tx_in_flight;
 468         spinlock_t txlock;
 469
 470         struct usb_anchor intr_anchor;
 471         struct usb_anchor bulk_anchor;
 472         struct usb_anchor isoc_anchor;
 473         struct usb_anchor diag_anchor;
 474         struct usb_anchor ctrl_anchor;
 475         spinlock_t rxlock;
 476
 477         struct sk_buff *evt_skb;
 478         struct sk_buff *acl_skb;
 479         struct sk_buff *sco_skb;
 480
 481         struct usb_endpoint_descriptor *intr_ep;
 482         struct usb_endpoint_descriptor *bulk_tx_ep;
 483         struct usb_endpoint_descriptor *bulk_rx_ep;
 484         struct usb_endpoint_descriptor *isoc_tx_ep;
 485         struct usb_endpoint_descriptor *isoc_rx_ep;
 486         struct usb_endpoint_descriptor *diag_tx_ep;
 487         struct usb_endpoint_descriptor *diag_rx_ep;
 488
 489         struct gpio_desc *reset_gpio;
 490
 491         __u8 cmdreq_type;
 492         __u8 cmdreq;
 493
 494         unsigned int sco_num;
 495         int isoc_altsetting;
 496         int suspend_count;
 497
 498         int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
 499         int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
 500
 501         int (*setup_on_usb)(struct hci_dev *hdev);
 502
 503         int oob_wake_irq;   /* irq for out-of-band wake-on-bt */
 504         unsigned cmd_timeout_cnt;
 505 };
 506
 507
 508 static void btusb_intel_cmd_timeout(struct hci_dev *hdev)
 509 {
 510         struct btusb_data *data = hci_get_drvdata(hdev);
 511         struct gpio_desc *reset_gpio = data->reset_gpio;
 512
 513         if (++data->cmd_timeout_cnt < 5)
 514                 return;
 515
 516         if (!reset_gpio) {
 517                 bt_dev_err(hdev, "No way to reset. Ignoring and continuing");
 518                 return;
 519         }
 520
 521         /*
 522          * Toggle the hard reset line if the platform provides one. The reset
 523          * is going to yank the device off the USB and then replug. So doing
 524          * once is enough. The cleanup is handled correctly on the way out
 525          * (standard USB disconnect), and the new device is detected cleanly
 526          * and bound to the driver again like it should be.
 527          */
 528         if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
 529                 bt_dev_err(hdev, "last reset failed? Not resetting again");
 530                 return;
 531         }
 532
 533         bt_dev_err(hdev, "Initiating HW reset via gpio");
 534         gpiod_set_value_cansleep(reset_gpio, 1);
 535         msleep(100);
 536         gpiod_set_value_cansleep(reset_gpio, 0);
 537 }
 538
 539 static void btusb_rtl_cmd_timeout(struct hci_dev *hdev)
 540 {
 541         struct btusb_data *data = hci_get_drvdata(hdev);
 542         struct gpio_desc *reset_gpio = data->reset_gpio;
 543
 544         if (++data->cmd_timeout_cnt < 5)
 545                 return;
 546
 547         if (!reset_gpio) {
 548                 bt_dev_err(hdev, "No gpio to reset Realtek device, ignoring");
 549                 return;
 550         }
 551
 552         /* Toggle the hard reset line. The Realtek device is going to
 553          * yank itself off the USB and then replug. The cleanup is handled
 554          * correctly on the way out (standard USB disconnect), and the new
 555          * device is detected cleanly and bound to the driver again like
 556          * it should be.
 557          */
 558         if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
 559                 bt_dev_err(hdev, "last reset failed? Not resetting again");
 560                 return;
 561         }
 562
 563         bt_dev_err(hdev, "Reset Realtek device via gpio");
 564         gpiod_set_value_cansleep(reset_gpio, 1);
 565         msleep(200);
 566         gpiod_set_value_cansleep(reset_gpio, 0);
 567 }
 568
 569 static inline void btusb_free_frags(struct btusb_data *data)
 570 {
 571         unsigned long flags;
 572
 573         spin_lock_irqsave(&data->rxlock, flags);
 574
 575         kfree_skb(data->evt_skb);
 576         data->evt_skb = NULL;
 577
 578         kfree_skb(data->acl_skb);
 579         data->acl_skb = NULL;
 580
 581         kfree_skb(data->sco_skb);
 582         data->sco_skb = NULL;
 583
 584         spin_unlock_irqrestore(&data->rxlock, flags);
 585 }
 586
 587 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
 588 {
 589         struct sk_buff *skb;
 590         unsigned long flags;
 591         int err = 0;
 592
 593         spin_lock_irqsave(&data->rxlock, flags);
 594         skb = data->evt_skb;
 595
 596         while (count) {
 597                 int len;
 598
 599                 if (!skb) {
 600                         skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
 601                         if (!skb) {
 602                                 err = -ENOMEM;
 603                                 break;
 604                         }
 605
 606                         hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
 607                         hci_skb_expect(skb) = HCI_EVENT_HDR_SIZE;
 608                 }
 609
 610                 len = min_t(uint, hci_skb_expect(skb), count);
 611                 skb_put_data(skb, buffer, len);
 612
 613                 count -= len;
 614                 buffer += len;
 615                 hci_skb_expect(skb) -= len;
 616
 617                 if (skb->len == HCI_EVENT_HDR_SIZE) {
 618                         /* Complete event header */
 619                         hci_skb_expect(skb) = hci_event_hdr(skb)->plen;
 620
 621                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 622                                 kfree_skb(skb);
 623                                 skb = NULL;
 624
 625                                 err = -EILSEQ;
 626                                 break;
 627                         }
 628                 }
 629
 630                 if (!hci_skb_expect(skb)) {
 631                         /* Complete frame */
 632                         data->recv_event(data->hdev, skb);
 633                         skb = NULL;
 634                 }
 635         }
 636
 637         data->evt_skb = skb;
 638         spin_unlock_irqrestore(&data->rxlock, flags);
 639
 640         return err;
 641 }
 642
 643 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
 644 {
 645         struct sk_buff *skb;
 646         unsigned long flags;
 647         int err = 0;
 648
 649         spin_lock_irqsave(&data->rxlock, flags);
 650         skb = data->acl_skb;
 651
 652         while (count) {
 653                 int len;
 654
 655                 if (!skb) {
 656                         skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
 657                         if (!skb) {
 658                                 err = -ENOMEM;
 659                                 break;
 660                         }
 661
 662                         hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT;
 663                         hci_skb_expect(skb) = HCI_ACL_HDR_SIZE;
 664                 }
 665
 666                 len = min_t(uint, hci_skb_expect(skb), count);
 667                 skb_put_data(skb, buffer, len);
 668
 669                 count -= len;
 670                 buffer += len;
 671                 hci_skb_expect(skb) -= len;
 672
 673                 if (skb->len == HCI_ACL_HDR_SIZE) {
 674                         __le16 dlen = hci_acl_hdr(skb)->dlen;
 675
 676                         /* Complete ACL header */
 677                         hci_skb_expect(skb) = __le16_to_cpu(dlen);
 678
 679                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 680                                 kfree_skb(skb);
 681                                 skb = NULL;
 682
 683                                 err = -EILSEQ;
 684                                 break;
 685                         }
 686                 }
 687
 688                 if (!hci_skb_expect(skb)) {
 689                         /* Complete frame */
 690                         hci_recv_frame(data->hdev, skb);
 691                         skb = NULL;
 692                 }
 693         }
 694
 695         data->acl_skb = skb;
 696         spin_unlock_irqrestore(&data->rxlock, flags);
 697
 698         return err;
 699 }
 700
 701 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
 702 {
 703         struct sk_buff *skb;
 704         unsigned long flags;
 705         int err = 0;
 706
 707         spin_lock_irqsave(&data->rxlock, flags);
 708         skb = data->sco_skb;
 709
 710         while (count) {
 711                 int len;
 712
 713                 if (!skb) {
 714                         skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
 715                         if (!skb) {
 716                                 err = -ENOMEM;
 717                                 break;
 718                         }
 719
 720                         hci_skb_pkt_type(skb) = HCI_SCODATA_PKT;
 721                         hci_skb_expect(skb) = HCI_SCO_HDR_SIZE;
 722                 }
 723
 724                 len = min_t(uint, hci_skb_expect(skb), count);
 725                 skb_put_data(skb, buffer, len);
 726
 727                 count -= len;
 728                 buffer += len;
 729                 hci_skb_expect(skb) -= len;
 730
 731                 if (skb->len == HCI_SCO_HDR_SIZE) {
 732                         /* Complete SCO header */
 733                         hci_skb_expect(skb) = hci_sco_hdr(skb)->dlen;
 734
 735                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 736                                 kfree_skb(skb);
 737                                 skb = NULL;
 738
 739                                 err = -EILSEQ;
 740                                 break;
 741                         }
 742                 }
 743
 744                 if (!hci_skb_expect(skb)) {
 745                         /* Complete frame */
 746                         hci_recv_frame(data->hdev, skb);
 747                         skb = NULL;
 748                 }
 749         }
 750
 751         data->sco_skb = skb;
 752         spin_unlock_irqrestore(&data->rxlock, flags);
 753
 754         return err;
 755 }
 756
 757 static void btusb_intr_complete(struct urb *urb)
 758 {
 759         struct hci_dev *hdev = urb->context;
 760         struct btusb_data *data = hci_get_drvdata(hdev);
 761         int err;
 762
 763         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 764                urb->actual_length);
 765
 766         if (!test_bit(HCI_RUNNING, &hdev->flags))
 767                 return;
 768
 769         if (urb->status == 0) {
 770                 hdev->stat.byte_rx += urb->actual_length;
 771
 772                 if (btusb_recv_intr(data, urb->transfer_buffer,
 773                                     urb->actual_length) < 0) {
 774                         bt_dev_err(hdev, "corrupted event packet");
 775                         hdev->stat.err_rx++;
 776                 }
 777         } else if (urb->status == -ENOENT) {
 778                 /* Avoid suspend failed when usb_kill_urb */
 779                 return;
 780         }
 781
 782         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 783                 return;
 784
 785         usb_mark_last_busy(data->udev);
 786         usb_anchor_urb(urb, &data->intr_anchor);
 787
 788         err = usb_submit_urb(urb, GFP_ATOMIC);
 789         if (err < 0) {
 790                 /* -EPERM: urb is being killed;
 791                  * -ENODEV: device got disconnected
 792                  */
 793                 if (err != -EPERM && err != -ENODEV)
 794                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
 795                                    urb, -err);
 796                 usb_unanchor_urb(urb);
 797         }
 798 }
 799
 800 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 801 {
 802         struct btusb_data *data = hci_get_drvdata(hdev);
 803         struct urb *urb;
 804         unsigned char *buf;
 805         unsigned int pipe;
 806         int err, size;
 807
 808         BT_DBG("%s", hdev->name);
 809
 810         if (!data->intr_ep)
 811                 return -ENODEV;
 812
 813         urb = usb_alloc_urb(0, mem_flags);
 814         if (!urb)
 815                 return -ENOMEM;
 816
 817         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 818
 819         buf = kmalloc(size, mem_flags);
 820         if (!buf) {
 821                 usb_free_urb(urb);
 822                 return -ENOMEM;
 823         }
 824
 825         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 826
 827         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 828                          btusb_intr_complete, hdev, data->intr_ep->bInterval);
 829
 830         urb->transfer_flags |= URB_FREE_BUFFER;
 831
 832         usb_anchor_urb(urb, &data->intr_anchor);
 833
 834         err = usb_submit_urb(urb, mem_flags);
 835         if (err < 0) {
 836                 if (err != -EPERM && err != -ENODEV)
 837                         bt_dev_err(hdev, "urb %p submission failed (%d)",
 838                                    urb, -err);
 839                 usb_unanchor_urb(urb);
 840         }
 841
 842         usb_free_urb(urb);
 843
 844         return err;
 845 }
 846
 847 static void btusb_bulk_complete(struct urb *urb)
 848 {
 849         struct hci_dev *hdev = urb->context;
 850         struct btusb_data *data = hci_get_drvdata(hdev);
 851         int err;
 852
 853         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 854                urb->actual_length);
 855
 856         if (!test_bit(HCI_RUNNING, &hdev->flags))
 857                 return;
 858
 859         if (urb->status == 0) {
 860                 hdev->stat.byte_rx += urb->actual_length;
 861
 862                 if (data->recv_bulk(data, urb->transfer_buffer,
 863                                     urb->actual_length) < 0) {
 864                         bt_dev_err(hdev, "corrupted ACL packet");
 865                         hdev->stat.err_rx++;
 866                 }
 867         } else if (urb->status == -ENOENT) {
 868                 /* Avoid suspend failed when usb_kill_urb */
 869                 return;
 870         }
 871
 872         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 873                 return;
 874
 875         usb_anchor_urb(urb, &data->bulk_anchor);
 876         usb_mark_last_busy(data->udev);
 877
 878         err = usb_submit_urb(urb, GFP_ATOMIC);
 879         if (err < 0) {
 880                 /* -EPERM: urb is being killed;
 881                  * -ENODEV: device got disconnected
 882                  */
 883                 if (err != -EPERM && err != -ENODEV)
 884                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
 885                                    urb, -err);
 886                 usb_unanchor_urb(urb);
 887         }
 888 }
 889
 890 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 891 {
 892         struct btusb_data *data = hci_get_drvdata(hdev);
 893         struct urb *urb;
 894         unsigned char *buf;
 895         unsigned int pipe;
 896         int err, size = HCI_MAX_FRAME_SIZE;
 897
 898         BT_DBG("%s", hdev->name);
 899
 900         if (!data->bulk_rx_ep)
 901                 return -ENODEV;
 902
 903         urb = usb_alloc_urb(0, mem_flags);
 904         if (!urb)
 905                 return -ENOMEM;
 906
 907         buf = kmalloc(size, mem_flags);
 908         if (!buf) {
 909                 usb_free_urb(urb);
 910                 return -ENOMEM;
 911         }
 912
 913         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 914
 915         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
 916                           btusb_bulk_complete, hdev);
 917
 918         urb->transfer_flags |= URB_FREE_BUFFER;
 919
 920         usb_mark_last_busy(data->udev);
 921         usb_anchor_urb(urb, &data->bulk_anchor);
 922
 923         err = usb_submit_urb(urb, mem_flags);
 924         if (err < 0) {
 925                 if (err != -EPERM && err != -ENODEV)
 926                         bt_dev_err(hdev, "urb %p submission failed (%d)",
 927                                    urb, -err);
 928                 usb_unanchor_urb(urb);
 929         }
 930
 931         usb_free_urb(urb);
 932
 933         return err;
 934 }
 935
 936 static void btusb_isoc_complete(struct urb *urb)
 937 {
 938         struct hci_dev *hdev = urb->context;
 939         struct btusb_data *data = hci_get_drvdata(hdev);
 940         int i, err;
 941
 942         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 943                urb->actual_length);
 944
 945         if (!test_bit(HCI_RUNNING, &hdev->flags))
 946                 return;
 947
 948         if (urb->status == 0) {
 949                 for (i = 0; i < urb->number_of_packets; i++) {
 950                         unsigned int offset = urb->iso_frame_desc[i].offset;
 951                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 952
 953                         if (urb->iso_frame_desc[i].status)
 954                                 continue;
 955
 956                         hdev->stat.byte_rx += length;
 957
 958                         if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
 959                                             length) < 0) {
 960                                 bt_dev_err(hdev, "corrupted SCO packet");
 961                                 hdev->stat.err_rx++;
 962                         }
 963                 }
 964         } else if (urb->status == -ENOENT) {
 965                 /* Avoid suspend failed when usb_kill_urb */
 966                 return;
 967         }
 968
 969         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 970                 return;
 971
 972         usb_anchor_urb(urb, &data->isoc_anchor);
 973
 974         err = usb_submit_urb(urb, GFP_ATOMIC);
 975         if (err < 0) {
 976                 /* -EPERM: urb is being killed;
 977                  * -ENODEV: device got disconnected
 978                  */
 979                 if (err != -EPERM && err != -ENODEV)
 980                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
 981                                    urb, -err);
 982                 usb_unanchor_urb(urb);
 983         }
 984 }
 985
 986 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 987 {
 988         int i, offset = 0;
 989
 990         BT_DBG("len %d mtu %d", len, mtu);
 991
 992         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 993                                         i++, offset += mtu, len -= mtu) {
 994                 urb->iso_frame_desc[i].offset = offset;
 995                 urb->iso_frame_desc[i].length = mtu;
 996         }
 997
 998         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 999                 urb->iso_frame_desc[i].offset = offset;
1000                 urb->iso_frame_desc[i].length = len;
1001                 i++;
1002         }
1003
1004         urb->number_of_packets = i;
1005 }
1006
1007 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
1008 {
1009         struct btusb_data *data = hci_get_drvdata(hdev);
1010         struct urb *urb;
1011         unsigned char *buf;
1012         unsigned int pipe;
1013         int err, size;
1014
1015         BT_DBG("%s", hdev->name);
1016
1017         if (!data->isoc_rx_ep)
1018                 return -ENODEV;
1019
1020         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
1021         if (!urb)
1022                 return -ENOMEM;
1023
1024         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
1025                                                 BTUSB_MAX_ISOC_FRAMES;
1026
1027         buf = kmalloc(size, mem_flags);
1028         if (!buf) {
1029                 usb_free_urb(urb);
1030                 return -ENOMEM;
1031         }
1032
1033         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
1034
1035         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
1036                          hdev, data->isoc_rx_ep->bInterval);
1037
1038         urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
1039
1040         __fill_isoc_descriptor(urb, size,
1041                                le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
1042
1043         usb_anchor_urb(urb, &data->isoc_anchor);
1044
1045         err = usb_submit_urb(urb, mem_flags);
1046         if (err < 0) {
1047                 if (err != -EPERM && err != -ENODEV)
1048                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1049                                    urb, -err);
1050                 usb_unanchor_urb(urb);
1051         }
1052
1053         usb_free_urb(urb);
1054
1055         return err;
1056 }
1057
1058 static void btusb_diag_complete(struct urb *urb)
1059 {
1060         struct hci_dev *hdev = urb->context;
1061         struct btusb_data *data = hci_get_drvdata(hdev);
1062         int err;
1063
1064         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1065                urb->actual_length);
1066
1067         if (urb->status == 0) {
1068                 struct sk_buff *skb;
1069
1070                 skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC);
1071                 if (skb) {
1072                         skb_put_data(skb, urb->transfer_buffer,
1073                                      urb->actual_length);
1074                         hci_recv_diag(hdev, skb);
1075                 }
1076         } else if (urb->status == -ENOENT) {
1077                 /* Avoid suspend failed when usb_kill_urb */
1078                 return;
1079         }
1080
1081         if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags))
1082                 return;
1083
1084         usb_anchor_urb(urb, &data->diag_anchor);
1085         usb_mark_last_busy(data->udev);
1086
1087         err = usb_submit_urb(urb, GFP_ATOMIC);
1088         if (err < 0) {
1089                 /* -EPERM: urb is being killed;
1090                  * -ENODEV: device got disconnected
1091                  */
1092                 if (err != -EPERM && err != -ENODEV)
1093                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1094                                    urb, -err);
1095                 usb_unanchor_urb(urb);
1096         }
1097 }
1098
1099 static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags)
1100 {
1101         struct btusb_data *data = hci_get_drvdata(hdev);
1102         struct urb *urb;
1103         unsigned char *buf;
1104         unsigned int pipe;
1105         int err, size = HCI_MAX_FRAME_SIZE;
1106
1107         BT_DBG("%s", hdev->name);
1108
1109         if (!data->diag_rx_ep)
1110                 return -ENODEV;
1111
1112         urb = usb_alloc_urb(0, mem_flags);
1113         if (!urb)
1114                 return -ENOMEM;
1115
1116         buf = kmalloc(size, mem_flags);
1117         if (!buf) {
1118                 usb_free_urb(urb);
1119                 return -ENOMEM;
1120         }
1121
1122         pipe = usb_rcvbulkpipe(data->udev, data->diag_rx_ep->bEndpointAddress);
1123
1124         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
1125                           btusb_diag_complete, hdev);
1126
1127         urb->transfer_flags |= URB_FREE_BUFFER;
1128
1129         usb_mark_last_busy(data->udev);
1130         usb_anchor_urb(urb, &data->diag_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_tx_complete(struct urb *urb)
1146 {
1147         struct sk_buff *skb = urb->context;
1148         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1149         struct btusb_data *data = hci_get_drvdata(hdev);
1150         unsigned long flags;
1151
1152         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1153                urb->actual_length);
1154
1155         if (!test_bit(HCI_RUNNING, &hdev->flags))
1156                 goto done;
1157
1158         if (!urb->status)
1159                 hdev->stat.byte_tx += urb->transfer_buffer_length;
1160         else
1161                 hdev->stat.err_tx++;
1162
1163 done:
1164         spin_lock_irqsave(&data->txlock, flags);
1165         data->tx_in_flight--;
1166         spin_unlock_irqrestore(&data->txlock, flags);
1167
1168         kfree(urb->setup_packet);
1169
1170         kfree_skb(skb);
1171 }
1172
1173 static void btusb_isoc_tx_complete(struct urb *urb)
1174 {
1175         struct sk_buff *skb = urb->context;
1176         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1177
1178         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1179                urb->actual_length);
1180
1181         if (!test_bit(HCI_RUNNING, &hdev->flags))
1182                 goto done;
1183
1184         if (!urb->status)
1185                 hdev->stat.byte_tx += urb->transfer_buffer_length;
1186         else
1187                 hdev->stat.err_tx++;
1188
1189 done:
1190         kfree(urb->setup_packet);
1191
1192         kfree_skb(skb);
1193 }
1194
1195 static int btusb_open(struct hci_dev *hdev)
1196 {
1197         struct btusb_data *data = hci_get_drvdata(hdev);
1198         int err;
1199
1200         BT_DBG("%s", hdev->name);
1201
1202         err = usb_autopm_get_interface(data->intf);
1203         if (err < 0)
1204                 return err;
1205
1206         /* Patching USB firmware files prior to starting any URBs of HCI path
1207          * It is more safe to use USB bulk channel for downloading USB patch
1208          */
1209         if (data->setup_on_usb) {
1210                 err = data->setup_on_usb(hdev);
1211                 if (err < 0)
1212                         goto setup_fail;
1213         }
1214
1215         data->intf->needs_remote_wakeup = 1;
1216
1217         /* Disable device remote wakeup when host is suspended
1218          * For Realtek chips, global suspend without
1219          * SET_FEATURE (DEVICE_REMOTE_WAKEUP) can save more power in device.
1220          */
1221         if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags))
1222                 device_wakeup_disable(&data->udev->dev);
1223
1224         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
1225                 goto done;
1226
1227         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
1228         if (err < 0)
1229                 goto failed;
1230
1231         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1232         if (err < 0) {
1233                 usb_kill_anchored_urbs(&data->intr_anchor);
1234                 goto failed;
1235         }
1236
1237         set_bit(BTUSB_BULK_RUNNING, &data->flags);
1238         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1239
1240         if (data->diag) {
1241                 if (!btusb_submit_diag_urb(hdev, GFP_KERNEL))
1242                         set_bit(BTUSB_DIAG_RUNNING, &data->flags);
1243         }
1244
1245 done:
1246         usb_autopm_put_interface(data->intf);
1247         return 0;
1248
1249 failed:
1250         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1251 setup_fail:
1252         usb_autopm_put_interface(data->intf);
1253         return err;
1254 }
1255
1256 static void btusb_stop_traffic(struct btusb_data *data)
1257 {
1258         usb_kill_anchored_urbs(&data->intr_anchor);
1259         usb_kill_anchored_urbs(&data->bulk_anchor);
1260         usb_kill_anchored_urbs(&data->isoc_anchor);
1261         usb_kill_anchored_urbs(&data->diag_anchor);
1262         usb_kill_anchored_urbs(&data->ctrl_anchor);
1263 }
1264
1265 static int btusb_close(struct hci_dev *hdev)
1266 {
1267         struct btusb_data *data = hci_get_drvdata(hdev);
1268         int err;
1269
1270         BT_DBG("%s", hdev->name);
1271
1272         cancel_work_sync(&data->work);
1273         cancel_work_sync(&data->waker);
1274
1275         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1276         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1277         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1278         clear_bit(BTUSB_DIAG_RUNNING, &data->flags);
1279
1280         btusb_stop_traffic(data);
1281         btusb_free_frags(data);
1282
1283         err = usb_autopm_get_interface(data->intf);
1284         if (err < 0)
1285                 goto failed;
1286
1287         data->intf->needs_remote_wakeup = 0;
1288
1289         /* Enable remote wake up for auto-suspend */
1290         if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags))
1291                 data->intf->needs_remote_wakeup = 1;
1292
1293         usb_autopm_put_interface(data->intf);
1294
1295 failed:
1296         usb_scuttle_anchored_urbs(&data->deferred);
1297         return 0;
1298 }
1299
1300 static int btusb_flush(struct hci_dev *hdev)
1301 {
1302         struct btusb_data *data = hci_get_drvdata(hdev);
1303
1304         BT_DBG("%s", hdev->name);
1305
1306         usb_kill_anchored_urbs(&data->tx_anchor);
1307         btusb_free_frags(data);
1308
1309         return 0;
1310 }
1311
1312 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
1313 {
1314         struct btusb_data *data = hci_get_drvdata(hdev);
1315         struct usb_ctrlrequest *dr;
1316         struct urb *urb;
1317         unsigned int pipe;
1318
1319         urb = usb_alloc_urb(0, GFP_KERNEL);
1320         if (!urb)
1321                 return ERR_PTR(-ENOMEM);
1322
1323         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
1324         if (!dr) {
1325                 usb_free_urb(urb);
1326                 return ERR_PTR(-ENOMEM);
1327         }
1328
1329         dr->bRequestType = data->cmdreq_type;
1330         dr->bRequest     = data->cmdreq;
1331         dr->wIndex       = 0;
1332         dr->wValue       = 0;
1333         dr->wLength      = __cpu_to_le16(skb->len);
1334
1335         pipe = usb_sndctrlpipe(data->udev, 0x00);
1336
1337         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
1338                              skb->data, skb->len, btusb_tx_complete, skb);
1339
1340         skb->dev = (void *)hdev;
1341
1342         return urb;
1343 }
1344
1345 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
1346 {
1347         struct btusb_data *data = hci_get_drvdata(hdev);
1348         struct urb *urb;
1349         unsigned int pipe;
1350
1351         if (!data->bulk_tx_ep)
1352                 return ERR_PTR(-ENODEV);
1353
1354         urb = usb_alloc_urb(0, GFP_KERNEL);
1355         if (!urb)
1356                 return ERR_PTR(-ENOMEM);
1357
1358         pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1359
1360         usb_fill_bulk_urb(urb, data->udev, pipe,
1361                           skb->data, skb->len, btusb_tx_complete, skb);
1362
1363         skb->dev = (void *)hdev;
1364
1365         return urb;
1366 }
1367
1368 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1369 {
1370         struct btusb_data *data = hci_get_drvdata(hdev);
1371         struct urb *urb;
1372         unsigned int pipe;
1373
1374         if (!data->isoc_tx_ep)
1375                 return ERR_PTR(-ENODEV);
1376
1377         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1378         if (!urb)
1379                 return ERR_PTR(-ENOMEM);
1380
1381         pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1382
1383         usb_fill_int_urb(urb, data->udev, pipe,
1384                          skb->data, skb->len, btusb_isoc_tx_complete,
1385                          skb, data->isoc_tx_ep->bInterval);
1386
1387         urb->transfer_flags  = URB_ISO_ASAP;
1388
1389         __fill_isoc_descriptor(urb, skb->len,
1390                                le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1391
1392         skb->dev = (void *)hdev;
1393
1394         return urb;
1395 }
1396
1397 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1398 {
1399         struct btusb_data *data = hci_get_drvdata(hdev);
1400         int err;
1401
1402         usb_anchor_urb(urb, &data->tx_anchor);
1403
1404         err = usb_submit_urb(urb, GFP_KERNEL);
1405         if (err < 0) {
1406                 if (err != -EPERM && err != -ENODEV)
1407                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1408                                    urb, -err);
1409                 kfree(urb->setup_packet);
1410                 usb_unanchor_urb(urb);
1411         } else {
1412                 usb_mark_last_busy(data->udev);
1413         }
1414
1415         usb_free_urb(urb);
1416         return err;
1417 }
1418
1419 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1420 {
1421         struct btusb_data *data = hci_get_drvdata(hdev);
1422         unsigned long flags;
1423         bool suspending;
1424
1425         spin_lock_irqsave(&data->txlock, flags);
1426         suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1427         if (!suspending)
1428                 data->tx_in_flight++;
1429         spin_unlock_irqrestore(&data->txlock, flags);
1430
1431         if (!suspending)
1432                 return submit_tx_urb(hdev, urb);
1433
1434         usb_anchor_urb(urb, &data->deferred);
1435         schedule_work(&data->waker);
1436
1437         usb_free_urb(urb);
1438         return 0;
1439 }
1440
1441 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1442 {
1443         struct urb *urb;
1444
1445         BT_DBG("%s", hdev->name);
1446
1447         switch (hci_skb_pkt_type(skb)) {
1448         case HCI_COMMAND_PKT:
1449                 urb = alloc_ctrl_urb(hdev, skb);
1450                 if (IS_ERR(urb))
1451                         return PTR_ERR(urb);
1452
1453                 hdev->stat.cmd_tx++;
1454                 return submit_or_queue_tx_urb(hdev, urb);
1455
1456         case HCI_ACLDATA_PKT:
1457                 urb = alloc_bulk_urb(hdev, skb);
1458                 if (IS_ERR(urb))
1459                         return PTR_ERR(urb);
1460
1461                 hdev->stat.acl_tx++;
1462                 return submit_or_queue_tx_urb(hdev, urb);
1463
1464         case HCI_SCODATA_PKT:
1465                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1466                         return -ENODEV;
1467
1468                 urb = alloc_isoc_urb(hdev, skb);
1469                 if (IS_ERR(urb))
1470                         return PTR_ERR(urb);
1471
1472                 hdev->stat.sco_tx++;
1473                 return submit_tx_urb(hdev, urb);
1474         }
1475
1476         return -EILSEQ;
1477 }
1478
1479 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1480 {
1481         struct btusb_data *data = hci_get_drvdata(hdev);
1482
1483         BT_DBG("%s evt %d", hdev->name, evt);
1484
1485         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1486                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1487                 schedule_work(&data->work);
1488         }
1489 }
1490
1491 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1492 {
1493         struct btusb_data *data = hci_get_drvdata(hdev);
1494         struct usb_interface *intf = data->isoc;
1495         struct usb_endpoint_descriptor *ep_desc;
1496         int i, err;
1497
1498         if (!data->isoc)
1499                 return -ENODEV;
1500
1501         err = usb_set_interface(data->udev, data->isoc_ifnum, altsetting);
1502         if (err < 0) {
1503                 bt_dev_err(hdev, "setting interface failed (%d)", -err);
1504                 return err;
1505         }
1506
1507         data->isoc_altsetting = altsetting;
1508
1509         data->isoc_tx_ep = NULL;
1510         data->isoc_rx_ep = NULL;
1511
1512         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1513                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1514
1515                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1516                         data->isoc_tx_ep = ep_desc;
1517                         continue;
1518                 }
1519
1520                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1521                         data->isoc_rx_ep = ep_desc;
1522                         continue;
1523                 }
1524         }
1525
1526         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1527                 bt_dev_err(hdev, "invalid SCO descriptors");
1528                 return -ENODEV;
1529         }
1530
1531         return 0;
1532 }
1533
1534 static void btusb_work(struct work_struct *work)
1535 {
1536         struct btusb_data *data = container_of(work, struct btusb_data, work);
1537         struct hci_dev *hdev = data->hdev;
1538         int new_alts;
1539         int err;
1540
1541         if (data->sco_num > 0) {
1542                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1543                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1544                         if (err < 0) {
1545                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1546                                 usb_kill_anchored_urbs(&data->isoc_anchor);
1547                                 return;
1548                         }
1549
1550                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1551                 }
1552
1553                 if (hdev->voice_setting & 0x0020) {
1554                         static const int alts[3] = { 2, 4, 5 };
1555
1556                         new_alts = alts[data->sco_num - 1];
1557                 } else {
1558                         new_alts = data->sco_num;
1559                 }
1560
1561                 if (data->isoc_altsetting != new_alts) {
1562                         unsigned long flags;
1563
1564                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1565                         usb_kill_anchored_urbs(&data->isoc_anchor);
1566
1567                         /* When isochronous alternate setting needs to be
1568                          * changed, because SCO connection has been added
1569                          * or removed, a packet fragment may be left in the
1570                          * reassembling state. This could lead to wrongly
1571                          * assembled fragments.
1572                          *
1573                          * Clear outstanding fragment when selecting a new
1574                          * alternate setting.
1575                          */
1576                         spin_lock_irqsave(&data->rxlock, flags);
1577                         kfree_skb(data->sco_skb);
1578                         data->sco_skb = NULL;
1579                         spin_unlock_irqrestore(&data->rxlock, flags);
1580
1581                         if (__set_isoc_interface(hdev, new_alts) < 0)
1582                                 return;
1583                 }
1584
1585                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1586                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1587                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1588                         else
1589                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1590                 }
1591         } else {
1592                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1593                 usb_kill_anchored_urbs(&data->isoc_anchor);
1594
1595                 __set_isoc_interface(hdev, 0);
1596                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1597                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1598         }
1599 }
1600
1601 static void btusb_waker(struct work_struct *work)
1602 {
1603         struct btusb_data *data = container_of(work, struct btusb_data, waker);
1604         int err;
1605
1606         err = usb_autopm_get_interface(data->intf);
1607         if (err < 0)
1608                 return;
1609
1610         usb_autopm_put_interface(data->intf);
1611 }
1612
1613 static int btusb_setup_bcm92035(struct hci_dev *hdev)
1614 {
1615         struct sk_buff *skb;
1616         u8 val = 0x00;
1617
1618         BT_DBG("%s", hdev->name);
1619
1620         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1621         if (IS_ERR(skb))
1622                 bt_dev_err(hdev, "BCM92035 command failed (%ld)", PTR_ERR(skb));
1623         else
1624                 kfree_skb(skb);
1625
1626         return 0;
1627 }
1628
1629 static int btusb_setup_csr(struct hci_dev *hdev)
1630 {
1631         struct hci_rp_read_local_version *rp;
1632         struct sk_buff *skb;
1633
1634         BT_DBG("%s", hdev->name);
1635
1636         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1637                              HCI_INIT_TIMEOUT);
1638         if (IS_ERR(skb)) {
1639                 int err = PTR_ERR(skb);
1640                 bt_dev_err(hdev, "CSR: Local version failed (%d)", err);
1641                 return err;
1642         }
1643
1644         if (skb->len != sizeof(struct hci_rp_read_local_version)) {
1645                 bt_dev_err(hdev, "CSR: Local version length mismatch");
1646                 kfree_skb(skb);
1647                 return -EIO;
1648         }
1649
1650         rp = (struct hci_rp_read_local_version *)skb->data;
1651
1652         /* Detect controllers which aren't real CSR ones. */
1653         if (le16_to_cpu(rp->manufacturer) != 10 ||
1654             le16_to_cpu(rp->lmp_subver) == 0x0c5c) {
1655                 /* Clear the reset quirk since this is not an actual
1656                  * early Bluetooth 1.1 device from CSR.
1657                  */
1658                 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1659
1660                 /* These fake CSR controllers have all a broken
1661                  * stored link key handling and so just disable it.
1662                  */
1663                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
1664         }
1665
1666         kfree_skb(skb);
1667
1668         return 0;
1669 }
1670
1671 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1672                                                        struct intel_version *ver)
1673 {
1674         const struct firmware *fw;
1675         char fwname[64];
1676         int ret;
1677
1678         snprintf(fwname, sizeof(fwname),
1679                  "/*(DEBLOBBED)*/",
1680                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
1681                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1682                  ver->fw_build_ww, ver->fw_build_yy);
1683
1684         ret = reject_firmware(&fw, fwname, &hdev->dev);
1685         if (ret < 0) {
1686                 if (ret == -EINVAL) {
1687                         bt_dev_err(hdev, "Intel firmware file request failed (%d)",
1688                                    ret);
1689                         return NULL;
1690                 }
1691
1692                 bt_dev_err(hdev, "failed to open Intel firmware file: %s (%d)",
1693                            fwname, ret);
1694
1695                 /* If the correct firmware patch file is not found, use the
1696                  * default firmware patch file instead
1697                  */
1698                 snprintf(fwname, sizeof(fwname), "/*(DEBLOBBED)*/",
1699                          ver->hw_platform, ver->hw_variant);
1700                 if (reject_firmware(&fw, fwname, &hdev->dev) < 0) {
1701                         bt_dev_err(hdev, "failed to open default fw file: %s",
1702                                    fwname);
1703                         return NULL;
1704                 }
1705         }
1706
1707         bt_dev_info(hdev, "Intel Bluetooth firmware file: %s", fwname);
1708
1709         return fw;
1710 }
1711
1712 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1713                                       const struct firmware *fw,
1714                                       const u8 **fw_ptr, int *disable_patch)
1715 {
1716         struct sk_buff *skb;
1717         struct hci_command_hdr *cmd;
1718         const u8 *cmd_param;
1719         struct hci_event_hdr *evt = NULL;
1720         const u8 *evt_param = NULL;
1721         int remain = fw->size - (*fw_ptr - fw->data);
1722
1723         /* The first byte indicates the types of the patch command or event.
1724          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1725          * in the current firmware buffer doesn't start with 0x01 or
1726          * the size of remain buffer is smaller than HCI command header,
1727          * the firmware file is corrupted and it should stop the patching
1728          * process.
1729          */
1730         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1731                 bt_dev_err(hdev, "Intel fw corrupted: invalid cmd read");
1732                 return -EINVAL;
1733         }
1734         (*fw_ptr)++;
1735         remain--;
1736
1737         cmd = (struct hci_command_hdr *)(*fw_ptr);
1738         *fw_ptr += sizeof(*cmd);
1739         remain -= sizeof(*cmd);
1740
1741         /* Ensure that the remain firmware data is long enough than the length
1742          * of command parameter. If not, the firmware file is corrupted.
1743          */
1744         if (remain < cmd->plen) {
1745                 bt_dev_err(hdev, "Intel fw corrupted: invalid cmd len");
1746                 return -EFAULT;
1747         }
1748
1749         /* If there is a command that loads a patch in the firmware
1750          * file, then enable the patch upon success, otherwise just
1751          * disable the manufacturer mode, for example patch activation
1752          * is not required when the default firmware patch file is used
1753          * because there are no patch data to load.
1754          */
1755         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1756                 *disable_patch = 0;
1757
1758         cmd_param = *fw_ptr;
1759         *fw_ptr += cmd->plen;
1760         remain -= cmd->plen;
1761
1762         /* This reads the expected events when the above command is sent to the
1763          * device. Some vendor commands expects more than one events, for
1764          * example command status event followed by vendor specific event.
1765          * For this case, it only keeps the last expected event. so the command
1766          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1767          * last expected event.
1768          */
1769         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1770                 (*fw_ptr)++;
1771                 remain--;
1772
1773                 evt = (struct hci_event_hdr *)(*fw_ptr);
1774                 *fw_ptr += sizeof(*evt);
1775                 remain -= sizeof(*evt);
1776
1777                 if (remain < evt->plen) {
1778                         bt_dev_err(hdev, "Intel fw corrupted: invalid evt len");
1779                         return -EFAULT;
1780                 }
1781
1782                 evt_param = *fw_ptr;
1783                 *fw_ptr += evt->plen;
1784                 remain -= evt->plen;
1785         }
1786
1787         /* Every HCI commands in the firmware file has its correspond event.
1788          * If event is not found or remain is smaller than zero, the firmware
1789          * file is corrupted.
1790          */
1791         if (!evt || !evt_param || remain < 0) {
1792                 bt_dev_err(hdev, "Intel fw corrupted: invalid evt read");
1793                 return -EFAULT;
1794         }
1795
1796         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1797                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1798         if (IS_ERR(skb)) {
1799                 bt_dev_err(hdev, "sending Intel patch command (0x%4.4x) failed (%ld)",
1800                            cmd->opcode, PTR_ERR(skb));
1801                 return PTR_ERR(skb);
1802         }
1803
1804         /* It ensures that the returned event matches the event data read from
1805          * the firmware file. At fist, it checks the length and then
1806          * the contents of the event.
1807          */
1808         if (skb->len != evt->plen) {
1809                 bt_dev_err(hdev, "mismatch event length (opcode 0x%4.4x)",
1810                            le16_to_cpu(cmd->opcode));
1811                 kfree_skb(skb);
1812                 return -EFAULT;
1813         }
1814
1815         if (memcmp(skb->data, evt_param, evt->plen)) {
1816                 bt_dev_err(hdev, "mismatch event parameter (opcode 0x%4.4x)",
1817                            le16_to_cpu(cmd->opcode));
1818                 kfree_skb(skb);
1819                 return -EFAULT;
1820         }
1821         kfree_skb(skb);
1822
1823         return 0;
1824 }
1825
1826 static int btusb_setup_intel(struct hci_dev *hdev)
1827 {
1828         struct sk_buff *skb;
1829         const struct firmware *fw;
1830         const u8 *fw_ptr;
1831         int disable_patch, err;
1832         struct intel_version ver;
1833
1834         BT_DBG("%s", hdev->name);
1835
1836         /* The controller has a bug with the first HCI command sent to it
1837          * returning number of completed commands as zero. This would stall the
1838          * command processing in the Bluetooth core.
1839          *
1840          * As a workaround, send HCI Reset command first which will reset the
1841          * number of completed commands and allow normal command processing
1842          * from now on.
1843          */
1844         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1845         if (IS_ERR(skb)) {
1846                 bt_dev_err(hdev, "sending initial HCI reset command failed (%ld)",
1847                            PTR_ERR(skb));
1848                 return PTR_ERR(skb);
1849         }
1850         kfree_skb(skb);
1851
1852         /* Read Intel specific controller version first to allow selection of
1853          * which firmware file to load.
1854          *
1855          * The returned information are hardware variant and revision plus
1856          * firmware variant, revision and build number.
1857          */
1858         err = btintel_read_version(hdev, &ver);
1859         if (err)
1860                 return err;
1861
1862         bt_dev_info(hdev, "read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1863                     ver.hw_platform, ver.hw_variant, ver.hw_revision,
1864                     ver.fw_variant,  ver.fw_revision, ver.fw_build_num,
1865                     ver.fw_build_ww, ver.fw_build_yy, ver.fw_patch_num);
1866
1867         /* fw_patch_num indicates the version of patch the device currently
1868          * have. If there is no patch data in the device, it is always 0x00.
1869          * So, if it is other than 0x00, no need to patch the device again.
1870          */
1871         if (ver.fw_patch_num) {
1872                 bt_dev_info(hdev, "Intel device is already patched. "
1873                             "patch num: %02x", ver.fw_patch_num);
1874                 goto complete;
1875         }
1876
1877         /* Opens the firmware patch file based on the firmware version read
1878          * from the controller. If it fails to open the matching firmware
1879          * patch file, it tries to open the default firmware patch file.
1880          * If no patch file is found, allow the device to operate without
1881          * a patch.
1882          */
1883         fw = btusb_setup_intel_get_fw(hdev, &ver);
1884         if (!fw)
1885                 goto complete;
1886         fw_ptr = fw->data;
1887
1888         /* Enable the manufacturer mode of the controller.
1889          * Only while this mode is enabled, the driver can download the
1890          * firmware patch data and configuration parameters.
1891          */
1892         err = btintel_enter_mfg(hdev);
1893         if (err) {
1894                 release_firmware(fw);
1895                 return err;
1896         }
1897
1898         disable_patch = 1;
1899
1900         /* The firmware data file consists of list of Intel specific HCI
1901          * commands and its expected events. The first byte indicates the
1902          * type of the message, either HCI command or HCI event.
1903          *
1904          * It reads the command and its expected event from the firmware file,
1905          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1906          * the returned event is compared with the event read from the firmware
1907          * file and it will continue until all the messages are downloaded to
1908          * the controller.
1909          *
1910          * Once the firmware patching is completed successfully,
1911          * the manufacturer mode is disabled with reset and activating the
1912          * downloaded patch.
1913          *
1914          * If the firmware patching fails, the manufacturer mode is
1915          * disabled with reset and deactivating the patch.
1916          *
1917          * If the default patch file is used, no reset is done when disabling
1918          * the manufacturer.
1919          */
1920         while (fw->size > fw_ptr - fw->data) {
1921                 int ret;
1922
1923                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1924                                                  &disable_patch);
1925                 if (ret < 0)
1926                         goto exit_mfg_deactivate;
1927         }
1928
1929         release_firmware(fw);
1930
1931         if (disable_patch)
1932                 goto exit_mfg_disable;
1933
1934         /* Patching completed successfully and disable the manufacturer mode
1935          * with reset and activate the downloaded firmware patches.
1936          */
1937         err = btintel_exit_mfg(hdev, true, true);
1938         if (err)
1939                 return err;
1940
1941         /* Need build number for downloaded fw patches in
1942          * every power-on boot
1943          */
1944        err = btintel_read_version(hdev, &ver);
1945        if (err)
1946                return err;
1947        bt_dev_info(hdev, "Intel BT fw patch 0x%02x completed & activated",
1948                    ver.fw_patch_num);
1949
1950         goto complete;
1951
1952 exit_mfg_disable:
1953         /* Disable the manufacturer mode without reset */
1954         err = btintel_exit_mfg(hdev, false, false);
1955         if (err)
1956                 return err;
1957
1958         bt_dev_info(hdev, "Intel firmware patch completed");
1959
1960         goto complete;
1961
1962 exit_mfg_deactivate:
1963         release_firmware(fw);
1964
1965         /* Patching failed. Disable the manufacturer mode with reset and
1966          * deactivate the downloaded firmware patches.
1967          */
1968         err = btintel_exit_mfg(hdev, true, false);
1969         if (err)
1970                 return err;
1971
1972         bt_dev_info(hdev, "Intel firmware patch completed and deactivated");
1973
1974 complete:
1975         /* Set the event mask for Intel specific vendor events. This enables
1976          * a few extra events that are useful during general operation.
1977          */
1978         btintel_set_event_mask_mfg(hdev, false);
1979
1980         btintel_check_bdaddr(hdev);
1981         return 0;
1982 }
1983
1984 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
1985 {
1986         struct sk_buff *skb;
1987         struct hci_event_hdr *hdr;
1988         struct hci_ev_cmd_complete *evt;
1989
1990         skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_KERNEL);
1991         if (!skb)
1992                 return -ENOMEM;
1993
1994         hdr = skb_put(skb, sizeof(*hdr));
1995         hdr->evt = HCI_EV_CMD_COMPLETE;
1996         hdr->plen = sizeof(*evt) + 1;
1997
1998         evt = skb_put(skb, sizeof(*evt));
1999         evt->ncmd = 0x01;
2000         evt->opcode = cpu_to_le16(opcode);
2001
2002         skb_put_u8(skb, 0x00);
2003
2004         hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
2005
2006         return hci_recv_frame(hdev, skb);
2007 }
2008
2009 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
2010                                  int count)
2011 {
2012         /* When the device is in bootloader mode, then it can send
2013          * events via the bulk endpoint. These events are treated the
2014          * same way as the ones received from the interrupt endpoint.
2015          */
2016         if (test_bit(BTUSB_BOOTLOADER, &data->flags))
2017                 return btusb_recv_intr(data, buffer, count);
2018
2019         return btusb_recv_bulk(data, buffer, count);
2020 }
2021
2022 static void btusb_intel_bootup(struct btusb_data *data, const void *ptr,
2023                                unsigned int len)
2024 {
2025         const struct intel_bootup *evt = ptr;
2026
2027         if (len != sizeof(*evt))
2028                 return;
2029
2030         if (test_and_clear_bit(BTUSB_BOOTING, &data->flags))
2031                 wake_up_bit(&data->flags, BTUSB_BOOTING);
2032 }
2033
2034 static void btusb_intel_secure_send_result(struct btusb_data *data,
2035                                            const void *ptr, unsigned int len)
2036 {
2037         const struct intel_secure_send_result *evt = ptr;
2038
2039         if (len != sizeof(*evt))
2040                 return;
2041
2042         if (evt->result)
2043                 set_bit(BTUSB_FIRMWARE_FAILED, &data->flags);
2044
2045         if (test_and_clear_bit(BTUSB_DOWNLOADING, &data->flags) &&
2046             test_bit(BTUSB_FIRMWARE_LOADED, &data->flags))
2047                 wake_up_bit(&data->flags, BTUSB_DOWNLOADING);
2048 }
2049
2050 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
2051 {
2052         struct btusb_data *data = hci_get_drvdata(hdev);
2053
2054         if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
2055                 struct hci_event_hdr *hdr = (void *)skb->data;
2056
2057                 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
2058                     hdr->plen > 0) {
2059                         const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
2060                         unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
2061
2062                         switch (skb->data[2]) {
2063                         case 0x02:
2064                                 /* When switching to the operational firmware
2065                                  * the device sends a vendor specific event
2066                                  * indicating that the bootup completed.
2067                                  */
2068                                 btusb_intel_bootup(data, ptr, len);
2069                                 break;
2070                         case 0x06:
2071                                 /* When the firmware loading completes the
2072                                  * device sends out a vendor specific event
2073                                  * indicating the result of the firmware
2074                                  * loading.
2075                                  */
2076                                 btusb_intel_secure_send_result(data, ptr, len);
2077                                 break;
2078                         }
2079                 }
2080         }
2081
2082         return hci_recv_frame(hdev, skb);
2083 }
2084
2085 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
2086 {
2087         struct btusb_data *data = hci_get_drvdata(hdev);
2088         struct urb *urb;
2089
2090         BT_DBG("%s", hdev->name);
2091
2092         switch (hci_skb_pkt_type(skb)) {
2093         case HCI_COMMAND_PKT:
2094                 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
2095                         struct hci_command_hdr *cmd = (void *)skb->data;
2096                         __u16 opcode = le16_to_cpu(cmd->opcode);
2097
2098                         /* When in bootloader mode and the command 0xfc09
2099                          * is received, it needs to be send down the
2100                          * bulk endpoint. So allocate a bulk URB instead.
2101                          */
2102                         if (opcode == 0xfc09)
2103                                 urb = alloc_bulk_urb(hdev, skb);
2104                         else
2105                                 urb = alloc_ctrl_urb(hdev, skb);
2106
2107                         /* When the 0xfc01 command is issued to boot into
2108                          * the operational firmware, it will actually not
2109                          * send a command complete event. To keep the flow
2110                          * control working inject that event here.
2111                          */
2112                         if (opcode == 0xfc01)
2113                                 inject_cmd_complete(hdev, opcode);
2114                 } else {
2115                         urb = alloc_ctrl_urb(hdev, skb);
2116                 }
2117                 if (IS_ERR(urb))
2118                         return PTR_ERR(urb);
2119
2120                 hdev->stat.cmd_tx++;
2121                 return submit_or_queue_tx_urb(hdev, urb);
2122
2123         case HCI_ACLDATA_PKT:
2124                 urb = alloc_bulk_urb(hdev, skb);
2125                 if (IS_ERR(urb))
2126                         return PTR_ERR(urb);
2127
2128                 hdev->stat.acl_tx++;
2129                 return submit_or_queue_tx_urb(hdev, urb);
2130
2131         case HCI_SCODATA_PKT:
2132                 if (hci_conn_num(hdev, SCO_LINK) < 1)
2133                         return -ENODEV;
2134
2135                 urb = alloc_isoc_urb(hdev, skb);
2136                 if (IS_ERR(urb))
2137                         return PTR_ERR(urb);
2138
2139                 hdev->stat.sco_tx++;
2140                 return submit_tx_urb(hdev, urb);
2141         }
2142
2143         return -EILSEQ;
2144 }
2145
2146 static bool btusb_setup_intel_new_get_fw_name(struct intel_version *ver,
2147                                              struct intel_boot_params *params,
2148                                              char *fw_name, size_t len,
2149                                              const char *suffix)
2150 {
2151         switch (ver->hw_variant) {
2152         case 0x0b:      /* SfP */
2153         case 0x0c:      /* WsP */
2154                 snprintf(fw_name, len, "intel/ibt-%u-%u.%s",
2155                         le16_to_cpu(ver->hw_variant),
2156                         le16_to_cpu(params->dev_revid),
2157                         suffix);
2158                 break;
2159         case 0x11:      /* JfP */
2160         case 0x12:      /* ThP */
2161         case 0x13:      /* HrP */
2162         case 0x14:      /* CcP */
2163                 snprintf(fw_name, len, "intel/ibt-%u-%u-%u.%s",
2164                         le16_to_cpu(ver->hw_variant),
2165                         le16_to_cpu(ver->hw_revision),
2166                         le16_to_cpu(ver->fw_revision),
2167                         suffix);
2168                 break;
2169         default:
2170                 return false;
2171         }
2172         return true;
2173 }
2174
2175 static int btusb_setup_intel_new(struct hci_dev *hdev)
2176 {
2177         struct btusb_data *data = hci_get_drvdata(hdev);
2178         struct intel_version ver;
2179         struct intel_boot_params params;
2180         const struct firmware *fw;
2181         u32 boot_param;
2182         char fwname[64];
2183         ktime_t calltime, delta, rettime;
2184         unsigned long long duration;
2185         int err;
2186
2187         BT_DBG("%s", hdev->name);
2188
2189         /* Set the default boot parameter to 0x0 and it is updated to
2190          * SKU specific boot parameter after reading Intel_Write_Boot_Params
2191          * command while downloading the firmware.
2192          */
2193         boot_param = 0x00000000;
2194
2195         calltime = ktime_get();
2196
2197         /* Read the Intel version information to determine if the device
2198          * is in bootloader mode or if it already has operational firmware
2199          * loaded.
2200          */
2201         err = btintel_read_version(hdev, &ver);
2202         if (err) {
2203                 bt_dev_err(hdev, "Intel Read version failed (%d)", err);
2204                 btintel_reset_to_bootloader(hdev);
2205                 return err;
2206         }
2207
2208         /* The hardware platform number has a fixed value of 0x37 and
2209          * for now only accept this single value.
2210          */
2211         if (ver.hw_platform != 0x37) {
2212                 bt_dev_err(hdev, "Unsupported Intel hardware platform (%u)",
2213                            ver.hw_platform);
2214                 return -EINVAL;
2215         }
2216
2217         /* Check for supported iBT hardware variants of this firmware
2218          * loading method.
2219          *
2220          * This check has been put in place to ensure correct forward
2221          * compatibility options when newer hardware variants come along.
2222          */
2223         switch (ver.hw_variant) {
2224         case 0x0b:      /* SfP */
2225         case 0x0c:      /* WsP */
2226         case 0x11:      /* JfP */
2227         case 0x12:      /* ThP */
2228         case 0x13:      /* HrP */
2229         case 0x14:      /* CcP */
2230                 break;
2231         default:
2232                 bt_dev_err(hdev, "Unsupported Intel hardware variant (%u)",
2233                            ver.hw_variant);
2234                 return -EINVAL;
2235         }
2236
2237         btintel_version_info(hdev, &ver);
2238
2239         /* The firmware variant determines if the device is in bootloader
2240          * mode or is running operational firmware. The value 0x06 identifies
2241          * the bootloader and the value 0x23 identifies the operational
2242          * firmware.
2243          *
2244          * When the operational firmware is already present, then only
2245          * the check for valid Bluetooth device address is needed. This
2246          * determines if the device will be added as configured or
2247          * unconfigured controller.
2248          *
2249          * It is not possible to use the Secure Boot Parameters in this
2250          * case since that command is only available in bootloader mode.
2251          */
2252         if (ver.fw_variant == 0x23) {
2253                 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2254                 btintel_check_bdaddr(hdev);
2255                 return 0;
2256         }
2257
2258         /* If the device is not in bootloader mode, then the only possible
2259          * choice is to return an error and abort the device initialization.
2260          */
2261         if (ver.fw_variant != 0x06) {
2262                 bt_dev_err(hdev, "Unsupported Intel firmware variant (%u)",
2263                            ver.fw_variant);
2264                 return -ENODEV;
2265         }
2266
2267         /* Read the secure boot parameters to identify the operating
2268          * details of the bootloader.
2269          */
2270         err = btintel_read_boot_params(hdev, &params);
2271         if (err)
2272                 return err;
2273
2274         /* It is required that every single firmware fragment is acknowledged
2275          * with a command complete event. If the boot parameters indicate
2276          * that this bootloader does not send them, then abort the setup.
2277          */
2278         if (params.limited_cce != 0x00) {
2279                 bt_dev_err(hdev, "Unsupported Intel firmware loading method (%u)",
2280                            params.limited_cce);
2281                 return -EINVAL;
2282         }
2283
2284         /* If the OTP has no valid Bluetooth device address, then there will
2285          * also be no valid address for the operational firmware.
2286          */
2287         if (!bacmp(&params.otp_bdaddr, BDADDR_ANY)) {
2288                 bt_dev_info(hdev, "No device address configured");
2289                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2290         }
2291
2292         /* With this Intel bootloader only the hardware variant and device
2293          * revision information are used to select the right firmware for SfP
2294          * and WsP.
2295          *
2296          * The firmware filename is ibt-<hw_variant>-<dev_revid>.sfi.
2297          *
2298          * Currently the supported hardware variants are:
2299          *   11 (0x0b) for iBT3.0 (LnP/SfP)
2300          *   12 (0x0c) for iBT3.5 (WsP)
2301          *
2302          * For ThP/JfP and for future SKU's, the FW name varies based on HW
2303          * variant, HW revision and FW revision, as these are dependent on CNVi
2304          * and RF Combination.
2305          *
2306          *   17 (0x11) for iBT3.5 (JfP)
2307          *   18 (0x12) for iBT3.5 (ThP)
2308          *
2309          * The firmware file name for these will be
2310          * ibt-<hw_variant>-<hw_revision>-<fw_revision>.sfi.
2311          *
2312          */
2313         err = btusb_setup_intel_new_get_fw_name(&ver, &params, fwname,
2314                                                 sizeof(fwname), "sfi");
2315         if (!err) {
2316                 bt_dev_err(hdev, "Unsupported Intel firmware naming");
2317                 return -EINVAL;
2318         }
2319
2320         err = reject_firmware(&fw, fwname, &hdev->dev);
2321         if (err < 0) {
2322                 bt_dev_err(hdev, "Failed to load Intel firmware file (%d)", err);
2323                 return err;
2324         }
2325
2326         bt_dev_info(hdev, "Found device firmware: %s", fwname);
2327
2328         /* Save the DDC file name for later use to apply once the firmware
2329          * downloading is done.
2330          */
2331         err = btusb_setup_intel_new_get_fw_name(&ver, &params, fwname,
2332                                                 sizeof(fwname), "ddc");
2333         if (!err) {
2334                 bt_dev_err(hdev, "Unsupported Intel firmware naming");
2335                 return -EINVAL;
2336         }
2337
2338         if (fw->size < 644) {
2339                 bt_dev_err(hdev, "Invalid size of firmware file (%zu)",
2340                            fw->size);
2341                 err = -EBADF;
2342                 goto done;
2343         }
2344
2345         set_bit(BTUSB_DOWNLOADING, &data->flags);
2346
2347         /* Start firmware downloading and get boot parameter */
2348         err = btintel_download_firmware(hdev, fw, &boot_param);
2349         if (err < 0) {
2350                 /* When FW download fails, send Intel Reset to retry
2351                  * FW download.
2352                  */
2353                 btintel_reset_to_bootloader(hdev);
2354                 goto done;
2355         }
2356         set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2357
2358         bt_dev_info(hdev, "Waiting for firmware download to complete");
2359
2360         /* Before switching the device into operational mode and with that
2361          * booting the loaded firmware, wait for the bootloader notification
2362          * that all fragments have been successfully received.
2363          *
2364          * When the event processing receives the notification, then the
2365          * BTUSB_DOWNLOADING flag will be cleared.
2366          *
2367          * The firmware loading should not take longer than 5 seconds
2368          * and thus just timeout if that happens and fail the setup
2369          * of this device.
2370          */
2371         err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
2372                                   TASK_INTERRUPTIBLE,
2373                                   msecs_to_jiffies(5000));
2374         if (err == -EINTR) {
2375                 bt_dev_err(hdev, "Firmware loading interrupted");
2376                 goto done;
2377         }
2378
2379         if (err) {
2380                 bt_dev_err(hdev, "Firmware loading timeout");
2381                 err = -ETIMEDOUT;
2382                 btintel_reset_to_bootloader(hdev);
2383                 goto done;
2384         }
2385
2386         if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) {
2387                 bt_dev_err(hdev, "Firmware loading failed");
2388                 err = -ENOEXEC;
2389                 goto done;
2390         }
2391
2392         rettime = ktime_get();
2393         delta = ktime_sub(rettime, calltime);
2394         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2395
2396         bt_dev_info(hdev, "Firmware loaded in %llu usecs", duration);
2397
2398 done:
2399         release_firmware(fw);
2400
2401         if (err < 0)
2402                 return err;
2403
2404         calltime = ktime_get();
2405
2406         set_bit(BTUSB_BOOTING, &data->flags);
2407
2408         err = btintel_send_intel_reset(hdev, boot_param);
2409         if (err) {
2410                 bt_dev_err(hdev, "Intel Soft Reset failed (%d)", err);
2411                 btintel_reset_to_bootloader(hdev);
2412                 return err;
2413         }
2414
2415         /* The bootloader will not indicate when the device is ready. This
2416          * is done by the operational firmware sending bootup notification.
2417          *
2418          * Booting into operational firmware should not take longer than
2419          * 1 second. However if that happens, then just fail the setup
2420          * since something went wrong.
2421          */
2422         bt_dev_info(hdev, "Waiting for device to boot");
2423
2424         err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING,
2425                                   TASK_INTERRUPTIBLE,
2426                                   msecs_to_jiffies(1000));
2427
2428         if (err == -EINTR) {
2429                 bt_dev_err(hdev, "Device boot interrupted");
2430                 return -EINTR;
2431         }
2432
2433         if (err) {
2434                 bt_dev_err(hdev, "Device boot timeout");
2435                 btintel_reset_to_bootloader(hdev);
2436                 return -ETIMEDOUT;
2437         }
2438
2439         rettime = ktime_get();
2440         delta = ktime_sub(rettime, calltime);
2441         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2442
2443         bt_dev_info(hdev, "Device booted in %llu usecs", duration);
2444
2445         clear_bit(BTUSB_BOOTLOADER, &data->flags);
2446
2447         /* Once the device is running in operational mode, it needs to apply
2448          * the device configuration (DDC) parameters.
2449          *
2450          * The device can work without DDC parameters, so even if it fails
2451          * to load the file, no need to fail the setup.
2452          */
2453         btintel_load_ddc_config(hdev, fwname);
2454
2455         /* Set the event mask for Intel specific vendor events. This enables
2456          * a few extra events that are useful during general operation. It
2457          * does not enable any debugging related events.
2458          *
2459          * The device will function correctly without these events enabled
2460          * and thus no need to fail the setup.
2461          */
2462         btintel_set_event_mask(hdev, false);
2463
2464         /* Read the Intel version information after loading the FW  */
2465         err = btintel_read_version(hdev, &ver);
2466         if (err)
2467                 return err;
2468
2469         btintel_version_info(hdev, &ver);
2470
2471         return 0;
2472 }
2473
2474 static int btusb_shutdown_intel(struct hci_dev *hdev)
2475 {
2476         struct sk_buff *skb;
2477         long ret;
2478
2479         /* In the shutdown sequence where Bluetooth is turned off followed
2480          * by WiFi being turned off, turning WiFi back on causes issue with
2481          * the RF calibration.
2482          *
2483          * To ensure that any RF activity has been stopped, issue HCI Reset
2484          * command to clear all ongoing activity including advertising,
2485          * scanning etc.
2486          */
2487         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2488         if (IS_ERR(skb)) {
2489                 ret = PTR_ERR(skb);
2490                 bt_dev_err(hdev, "HCI reset during shutdown failed");
2491                 return ret;
2492         }
2493         kfree_skb(skb);
2494
2495         /* Some platforms have an issue with BT LED when the interface is
2496          * down or BT radio is turned off, which takes 5 seconds to BT LED
2497          * goes off. This command turns off the BT LED immediately.
2498          */
2499         skb = __hci_cmd_sync(hdev, 0xfc3f, 0, NULL, HCI_INIT_TIMEOUT);
2500         if (IS_ERR(skb)) {
2501                 ret = PTR_ERR(skb);
2502                 bt_dev_err(hdev, "turning off Intel device LED failed");
2503                 return ret;
2504         }
2505         kfree_skb(skb);
2506
2507         return 0;
2508 }
2509
2510 static int btusb_shutdown_intel_new(struct hci_dev *hdev)
2511 {
2512         struct sk_buff *skb;
2513
2514         /* Send HCI Reset to the controller to stop any BT activity which
2515          * were triggered. This will help to save power and maintain the
2516          * sync b/w Host and controller
2517          */
2518         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2519         if (IS_ERR(skb)) {
2520                 bt_dev_err(hdev, "HCI reset during shutdown failed");
2521                 return PTR_ERR(skb);
2522         }
2523         kfree_skb(skb);
2524
2525         return 0;
2526 }
2527
2528 #define FIRMWARE_MT7663         "/*(DEBLOBBED)*/"
2529 #define FIRMWARE_MT7668         "/*(DEBLOBBED)*/"
2530
2531 #define HCI_WMT_MAX_EVENT_SIZE          64
2532
2533 enum {
2534         BTMTK_WMT_PATCH_DWNLD = 0x1,
2535         BTMTK_WMT_FUNC_CTRL = 0x6,
2536         BTMTK_WMT_RST = 0x7,
2537         BTMTK_WMT_SEMAPHORE = 0x17,
2538 };
2539
2540 enum {
2541         BTMTK_WMT_INVALID,
2542         BTMTK_WMT_PATCH_UNDONE,
2543         BTMTK_WMT_PATCH_DONE,
2544         BTMTK_WMT_ON_UNDONE,
2545         BTMTK_WMT_ON_DONE,
2546         BTMTK_WMT_ON_PROGRESS,
2547 };
2548
2549 struct btmtk_wmt_hdr {
2550         u8      dir;
2551         u8      op;
2552         __le16  dlen;
2553         u8      flag;
2554 } __packed;
2555
2556 struct btmtk_hci_wmt_cmd {
2557         struct btmtk_wmt_hdr hdr;
2558         u8 data[256];
2559 } __packed;
2560
2561 struct btmtk_hci_wmt_evt {
2562         struct hci_event_hdr hhdr;
2563         struct btmtk_wmt_hdr whdr;
2564 } __packed;
2565
2566 struct btmtk_hci_wmt_evt_funcc {
2567         struct btmtk_hci_wmt_evt hwhdr;
2568         __be16 status;
2569 } __packed;
2570
2571 struct btmtk_tci_sleep {
2572         u8 mode;
2573         __le16 duration;
2574         __le16 host_duration;
2575         u8 host_wakeup_pin;
2576         u8 time_compensation;
2577 } __packed;
2578
2579 struct btmtk_hci_wmt_params {
2580         u8 op;
2581         u8 flag;
2582         u16 dlen;
2583         const void *data;
2584         u32 *status;
2585 };
2586
2587 static void btusb_mtk_wmt_recv(struct urb *urb)
2588 {
2589         struct hci_dev *hdev = urb->context;
2590         struct btusb_data *data = hci_get_drvdata(hdev);
2591         struct hci_event_hdr *hdr;
2592         struct sk_buff *skb;
2593         int err;
2594
2595         if (urb->status == 0 && urb->actual_length > 0) {
2596                 hdev->stat.byte_rx += urb->actual_length;
2597
2598                 /* WMT event shouldn't be fragmented and the size should be
2599                  * less than HCI_WMT_MAX_EVENT_SIZE.
2600                  */
2601                 skb = bt_skb_alloc(HCI_WMT_MAX_EVENT_SIZE, GFP_ATOMIC);
2602                 if (!skb) {
2603                         hdev->stat.err_rx++;
2604                         goto err_out;
2605                 }
2606
2607                 hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
2608                 skb_put_data(skb, urb->transfer_buffer, urb->actual_length);
2609
2610                 hdr = (void *)skb->data;
2611                 /* Fix up the vendor event id with 0xff for vendor specific
2612                  * instead of 0xe4 so that event send via monitoring socket can
2613                  * be parsed properly.
2614                  */
2615                 hdr->evt = 0xff;
2616
2617                 /* When someone waits for the WMT event, the skb is being cloned
2618                  * and being processed the events from there then.
2619                  */
2620                 if (test_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags)) {
2621                         data->evt_skb = skb_clone(skb, GFP_ATOMIC);
2622                         if (!data->evt_skb)
2623                                 goto err_out;
2624                 }
2625
2626                 err = hci_recv_frame(hdev, skb);
2627                 if (err < 0)
2628                         goto err_free_skb;
2629
2630                 if (test_and_clear_bit(BTUSB_TX_WAIT_VND_EVT,
2631                                        &data->flags)) {
2632                         /* Barrier to sync with other CPUs */
2633                         smp_mb__after_atomic();
2634                         wake_up_bit(&data->flags,
2635                                     BTUSB_TX_WAIT_VND_EVT);
2636                 }
2637 err_out:
2638                 return;
2639 err_free_skb:
2640                 kfree_skb(data->evt_skb);
2641                 data->evt_skb = NULL;
2642                 return;
2643         } else if (urb->status == -ENOENT) {
2644                 /* Avoid suspend failed when usb_kill_urb */
2645                 return;
2646         }
2647
2648         usb_mark_last_busy(data->udev);
2649
2650         /* The URB complete handler is still called with urb->actual_length = 0
2651          * when the event is not available, so we should keep re-submitting
2652          * URB until WMT event returns, Also, It's necessary to wait some time
2653          * between the two consecutive control URBs to relax the target device
2654          * to generate the event. Otherwise, the WMT event cannot return from
2655          * the device successfully.
2656          */
2657         udelay(100);
2658
2659         usb_anchor_urb(urb, &data->ctrl_anchor);
2660         err = usb_submit_urb(urb, GFP_ATOMIC);
2661         if (err < 0) {
2662                 /* -EPERM: urb is being killed;
2663                  * -ENODEV: device got disconnected
2664                  */
2665                 if (err != -EPERM && err != -ENODEV)
2666                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
2667                                    urb, -err);
2668                 usb_unanchor_urb(urb);
2669         }
2670 }
2671
2672 static int btusb_mtk_submit_wmt_recv_urb(struct hci_dev *hdev)
2673 {
2674         struct btusb_data *data = hci_get_drvdata(hdev);
2675         struct usb_ctrlrequest *dr;
2676         unsigned char *buf;
2677         int err, size = 64;
2678         unsigned int pipe;
2679         struct urb *urb;
2680
2681         urb = usb_alloc_urb(0, GFP_KERNEL);
2682         if (!urb)
2683                 return -ENOMEM;
2684
2685         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
2686         if (!dr) {
2687                 usb_free_urb(urb);
2688                 return -ENOMEM;
2689         }
2690
2691         dr->bRequestType = USB_TYPE_VENDOR | USB_DIR_IN;
2692         dr->bRequest     = 1;
2693         dr->wIndex       = cpu_to_le16(0);
2694         dr->wValue       = cpu_to_le16(48);
2695         dr->wLength      = cpu_to_le16(size);
2696
2697         buf = kmalloc(size, GFP_KERNEL);
2698         if (!buf) {
2699                 kfree(dr);
2700                 return -ENOMEM;
2701         }
2702
2703         pipe = usb_rcvctrlpipe(data->udev, 0);
2704
2705         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
2706                              buf, size, btusb_mtk_wmt_recv, hdev);
2707
2708         urb->transfer_flags |= URB_FREE_BUFFER;
2709
2710         usb_anchor_urb(urb, &data->ctrl_anchor);
2711         err = usb_submit_urb(urb, GFP_KERNEL);
2712         if (err < 0) {
2713                 if (err != -EPERM && err != -ENODEV)
2714                         bt_dev_err(hdev, "urb %p submission failed (%d)",
2715                                    urb, -err);
2716                 usb_unanchor_urb(urb);
2717         }
2718
2719         usb_free_urb(urb);
2720
2721         return err;
2722 }
2723
2724 static int btusb_mtk_hci_wmt_sync(struct hci_dev *hdev,
2725                                   struct btmtk_hci_wmt_params *wmt_params)
2726 {
2727         struct btusb_data *data = hci_get_drvdata(hdev);
2728         struct btmtk_hci_wmt_evt_funcc *wmt_evt_funcc;
2729         u32 hlen, status = BTMTK_WMT_INVALID;
2730         struct btmtk_hci_wmt_evt *wmt_evt;
2731         struct btmtk_hci_wmt_cmd wc;
2732         struct btmtk_wmt_hdr *hdr;
2733         int err;
2734
2735         /* Submit control IN URB on demand to process the WMT event */
2736         err = btusb_mtk_submit_wmt_recv_urb(hdev);
2737         if (err < 0)
2738                 return err;
2739
2740         /* Send the WMT command and wait until the WMT event returns */
2741         hlen = sizeof(*hdr) + wmt_params->dlen;
2742         if (hlen > 255)
2743                 return -EINVAL;
2744
2745         hdr = (struct btmtk_wmt_hdr *)&wc;
2746         hdr->dir = 1;
2747         hdr->op = wmt_params->op;
2748         hdr->dlen = cpu_to_le16(wmt_params->dlen + 1);
2749         hdr->flag = wmt_params->flag;
2750         memcpy(wc.data, wmt_params->data, wmt_params->dlen);
2751
2752         set_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2753
2754         err = __hci_cmd_send(hdev, 0xfc6f, hlen, &wc);
2755
2756         if (err < 0) {
2757                 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2758                 return err;
2759         }
2760
2761         /* The vendor specific WMT commands are all answered by a vendor
2762          * specific event and will have the Command Status or Command
2763          * Complete as with usual HCI command flow control.
2764          *
2765          * After sending the command, wait for BTUSB_TX_WAIT_VND_EVT
2766          * state to be cleared. The driver specific event receive routine
2767          * will clear that state and with that indicate completion of the
2768          * WMT command.
2769          */
2770         err = wait_on_bit_timeout(&data->flags, BTUSB_TX_WAIT_VND_EVT,
2771                                   TASK_INTERRUPTIBLE, HCI_INIT_TIMEOUT);
2772         if (err == -EINTR) {
2773                 bt_dev_err(hdev, "Execution of wmt command interrupted");
2774                 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2775                 return err;
2776         }
2777
2778         if (err) {
2779                 bt_dev_err(hdev, "Execution of wmt command timed out");
2780                 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags);
2781                 return -ETIMEDOUT;
2782         }
2783
2784         /* Parse and handle the return WMT event */
2785         wmt_evt = (struct btmtk_hci_wmt_evt *)data->evt_skb->data;
2786         if (wmt_evt->whdr.op != hdr->op) {
2787                 bt_dev_err(hdev, "Wrong op received %d expected %d",
2788                            wmt_evt->whdr.op, hdr->op);
2789                 err = -EIO;
2790                 goto err_free_skb;
2791         }
2792
2793         switch (wmt_evt->whdr.op) {
2794         case BTMTK_WMT_SEMAPHORE:
2795                 if (wmt_evt->whdr.flag == 2)
2796                         status = BTMTK_WMT_PATCH_UNDONE;
2797                 else
2798                         status = BTMTK_WMT_PATCH_DONE;
2799                 break;
2800         case BTMTK_WMT_FUNC_CTRL:
2801                 wmt_evt_funcc = (struct btmtk_hci_wmt_evt_funcc *)wmt_evt;
2802                 if (be16_to_cpu(wmt_evt_funcc->status) == 0x404)
2803                         status = BTMTK_WMT_ON_DONE;
2804                 else if (be16_to_cpu(wmt_evt_funcc->status) == 0x420)
2805                         status = BTMTK_WMT_ON_PROGRESS;
2806                 else
2807                         status = BTMTK_WMT_ON_UNDONE;
2808                 break;
2809         }
2810
2811         if (wmt_params->status)
2812                 *wmt_params->status = status;
2813
2814 err_free_skb:
2815         kfree_skb(data->evt_skb);
2816         data->evt_skb = NULL;
2817
2818         return err;
2819 }
2820
2821 static int btusb_mtk_setup_firmware(struct hci_dev *hdev, const char *fwname)
2822 {
2823         struct btmtk_hci_wmt_params wmt_params;
2824         const struct firmware *fw;
2825         const u8 *fw_ptr;
2826         size_t fw_size;
2827         int err, dlen;
2828         u8 flag;
2829
2830         err = reject_firmware(&fw, fwname, &hdev->dev);
2831         if (err < 0) {
2832                 bt_dev_err(hdev, "Failed to load firmware file (%d)", err);
2833                 return err;
2834         }
2835
2836         fw_ptr = fw->data;
2837         fw_size = fw->size;
2838
2839         /* The size of patch header is 30 bytes, should be skip */
2840         if (fw_size < 30) {
2841                 err = -EINVAL;
2842                 goto err_release_fw;
2843         }
2844
2845         fw_size -= 30;
2846         fw_ptr += 30;
2847         flag = 1;
2848
2849         wmt_params.op = BTMTK_WMT_PATCH_DWNLD;
2850         wmt_params.status = NULL;
2851
2852         while (fw_size > 0) {
2853                 dlen = min_t(int, 250, fw_size);
2854
2855                 /* Tell deivice the position in sequence */
2856                 if (fw_size - dlen <= 0)
2857                         flag = 3;
2858                 else if (fw_size < fw->size - 30)
2859                         flag = 2;
2860
2861                 wmt_params.flag = flag;
2862                 wmt_params.dlen = dlen;
2863                 wmt_params.data = fw_ptr;
2864
2865                 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2866                 if (err < 0) {
2867                         bt_dev_err(hdev, "Failed to send wmt patch dwnld (%d)",
2868                                    err);
2869                         goto err_release_fw;
2870                 }
2871
2872                 fw_size -= dlen;
2873                 fw_ptr += dlen;
2874         }
2875
2876         wmt_params.op = BTMTK_WMT_RST;
2877         wmt_params.flag = 4;
2878         wmt_params.dlen = 0;
2879         wmt_params.data = NULL;
2880         wmt_params.status = NULL;
2881
2882         /* Activate funciton the firmware providing to */
2883         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2884         if (err < 0) {
2885                 bt_dev_err(hdev, "Failed to send wmt rst (%d)", err);
2886                 goto err_release_fw;
2887         }
2888
2889         /* Wait a few moments for firmware activation done */
2890         usleep_range(10000, 12000);
2891
2892 err_release_fw:
2893         release_firmware(fw);
2894
2895         return err;
2896 }
2897
2898 static int btusb_mtk_func_query(struct hci_dev *hdev)
2899 {
2900         struct btmtk_hci_wmt_params wmt_params;
2901         int status, err;
2902         u8 param = 0;
2903
2904         /* Query whether the function is enabled */
2905         wmt_params.op = BTMTK_WMT_FUNC_CTRL;
2906         wmt_params.flag = 4;
2907         wmt_params.dlen = sizeof(param);
2908         wmt_params.data = &param;
2909         wmt_params.status = &status;
2910
2911         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2912         if (err < 0) {
2913                 bt_dev_err(hdev, "Failed to query function status (%d)", err);
2914                 return err;
2915         }
2916
2917         return status;
2918 }
2919
2920 static int btusb_mtk_reg_read(struct btusb_data *data, u32 reg, u32 *val)
2921 {
2922         int pipe, err, size = sizeof(u32);
2923         void *buf;
2924
2925         buf = kzalloc(size, GFP_KERNEL);
2926         if (!buf)
2927                 return -ENOMEM;
2928
2929         pipe = usb_rcvctrlpipe(data->udev, 0);
2930         err = usb_control_msg(data->udev, pipe, 0x63,
2931                               USB_TYPE_VENDOR | USB_DIR_IN,
2932                               reg >> 16, reg & 0xffff,
2933                               buf, size, USB_CTRL_SET_TIMEOUT);
2934         if (err < 0)
2935                 goto err_free_buf;
2936
2937         *val = get_unaligned_le32(buf);
2938
2939 err_free_buf:
2940         kfree(buf);
2941
2942         return err;
2943 }
2944
2945 static int btusb_mtk_id_get(struct btusb_data *data, u32 *id)
2946 {
2947         return btusb_mtk_reg_read(data, 0x80000008, id);
2948 }
2949
2950 static int btusb_mtk_setup(struct hci_dev *hdev)
2951 {
2952         struct btusb_data *data = hci_get_drvdata(hdev);
2953         struct btmtk_hci_wmt_params wmt_params;
2954         ktime_t calltime, delta, rettime;
2955         struct btmtk_tci_sleep tci_sleep;
2956         unsigned long long duration;
2957         struct sk_buff *skb;
2958         const char *fwname;
2959         int err, status;
2960         u32 dev_id;
2961         u8 param;
2962
2963         calltime = ktime_get();
2964
2965         err = btusb_mtk_id_get(data, &dev_id);
2966         if (err < 0) {
2967                 bt_dev_err(hdev, "Failed to get device id (%d)", err);
2968                 return err;
2969         }
2970
2971         switch (dev_id) {
2972         case 0x7663:
2973                 fwname = FIRMWARE_MT7663;
2974                 break;
2975         case 0x7668:
2976                 fwname = FIRMWARE_MT7668;
2977                 break;
2978         default:
2979                 bt_dev_err(hdev, "Unsupported support hardware variant (%08x)",
2980                            dev_id);
2981                 return -ENODEV;
2982         }
2983
2984         /* Query whether the firmware is already download */
2985         wmt_params.op = BTMTK_WMT_SEMAPHORE;
2986         wmt_params.flag = 1;
2987         wmt_params.dlen = 0;
2988         wmt_params.data = NULL;
2989         wmt_params.status = &status;
2990
2991         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
2992         if (err < 0) {
2993                 bt_dev_err(hdev, "Failed to query firmware status (%d)", err);
2994                 return err;
2995         }
2996
2997         if (status == BTMTK_WMT_PATCH_DONE) {
2998                 bt_dev_info(hdev, "firmware already downloaded");
2999                 goto ignore_setup_fw;
3000         }
3001
3002         /* Setup a firmware which the device definitely requires */
3003         err = btusb_mtk_setup_firmware(hdev, fwname);
3004         if (err < 0)
3005                 return err;
3006
3007 ignore_setup_fw:
3008         err = readx_poll_timeout(btusb_mtk_func_query, hdev, status,
3009                                  status < 0 || status != BTMTK_WMT_ON_PROGRESS,
3010                                  2000, 5000000);
3011         /* -ETIMEDOUT happens */
3012         if (err < 0)
3013                 return err;
3014
3015         /* The other errors happen in btusb_mtk_func_query */
3016         if (status < 0)
3017                 return status;
3018
3019         if (status == BTMTK_WMT_ON_DONE) {
3020                 bt_dev_info(hdev, "function already on");
3021                 goto ignore_func_on;
3022         }
3023
3024         /* Enable Bluetooth protocol */
3025         param = 1;
3026         wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3027         wmt_params.flag = 0;
3028         wmt_params.dlen = sizeof(param);
3029         wmt_params.data = &param;
3030         wmt_params.status = NULL;
3031
3032         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3033         if (err < 0) {
3034                 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
3035                 return err;
3036         }
3037
3038 ignore_func_on:
3039         /* Apply the low power environment setup */
3040         tci_sleep.mode = 0x5;
3041         tci_sleep.duration = cpu_to_le16(0x640);
3042         tci_sleep.host_duration = cpu_to_le16(0x640);
3043         tci_sleep.host_wakeup_pin = 0;
3044         tci_sleep.time_compensation = 0;
3045
3046         skb = __hci_cmd_sync(hdev, 0xfc7a, sizeof(tci_sleep), &tci_sleep,
3047                              HCI_INIT_TIMEOUT);
3048         if (IS_ERR(skb)) {
3049                 err = PTR_ERR(skb);
3050                 bt_dev_err(hdev, "Failed to apply low power setting (%d)", err);
3051                 return err;
3052         }
3053         kfree_skb(skb);
3054
3055         rettime = ktime_get();
3056         delta = ktime_sub(rettime, calltime);
3057         duration = (unsigned long long)ktime_to_ns(delta) >> 10;
3058
3059         bt_dev_info(hdev, "Device setup in %llu usecs", duration);
3060
3061         return 0;
3062 }
3063
3064 static int btusb_mtk_shutdown(struct hci_dev *hdev)
3065 {
3066         struct btmtk_hci_wmt_params wmt_params;
3067         u8 param = 0;
3068         int err;
3069
3070         /* Disable the device */
3071         wmt_params.op = BTMTK_WMT_FUNC_CTRL;
3072         wmt_params.flag = 0;
3073         wmt_params.dlen = sizeof(param);
3074         wmt_params.data = &param;
3075         wmt_params.status = NULL;
3076
3077         err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params);
3078         if (err < 0) {
3079                 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err);
3080                 return err;
3081         }
3082
3083         return 0;
3084 }
3085
3086 /*(DEBLOBBED)*/
3087
3088 #ifdef CONFIG_PM
3089 /* Configure an out-of-band gpio as wake-up pin, if specified in device tree */
3090 static int marvell_config_oob_wake(struct hci_dev *hdev)
3091 {
3092         struct sk_buff *skb;
3093         struct btusb_data *data = hci_get_drvdata(hdev);
3094         struct device *dev = &data->udev->dev;
3095         u16 pin, gap, opcode;
3096         int ret;
3097         u8 cmd[5];
3098
3099         /* Move on if no wakeup pin specified */
3100         if (of_property_read_u16(dev->of_node, "marvell,wakeup-pin", &pin) ||
3101             of_property_read_u16(dev->of_node, "marvell,wakeup-gap-ms", &gap))
3102                 return 0;
3103
3104         /* Vendor specific command to configure a GPIO as wake-up pin */
3105         opcode = hci_opcode_pack(0x3F, 0x59);
3106         cmd[0] = opcode & 0xFF;
3107         cmd[1] = opcode >> 8;
3108         cmd[2] = 2; /* length of parameters that follow */
3109         cmd[3] = pin;
3110         cmd[4] = gap; /* time in ms, for which wakeup pin should be asserted */
3111
3112         skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
3113         if (!skb) {
3114                 bt_dev_err(hdev, "%s: No memory\n", __func__);
3115                 return -ENOMEM;
3116         }
3117
3118         skb_put_data(skb, cmd, sizeof(cmd));
3119         hci_skb_pkt_type(skb) = HCI_COMMAND_PKT;
3120
3121         ret = btusb_send_frame(hdev, skb);
3122         if (ret) {
3123                 bt_dev_err(hdev, "%s: configuration failed\n", __func__);
3124                 kfree_skb(skb);
3125                 return ret;
3126         }
3127
3128         return 0;
3129 }
3130 #endif
3131
3132 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
3133                                     const bdaddr_t *bdaddr)
3134 {
3135         struct sk_buff *skb;
3136         u8 buf[8];
3137         long ret;
3138
3139         buf[0] = 0xfe;
3140         buf[1] = sizeof(bdaddr_t);
3141         memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
3142
3143         skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
3144         if (IS_ERR(skb)) {
3145                 ret = PTR_ERR(skb);
3146                 bt_dev_err(hdev, "changing Marvell device address failed (%ld)",
3147                            ret);
3148                 return ret;
3149         }
3150         kfree_skb(skb);
3151
3152         return 0;
3153 }
3154
3155 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
3156                                     const bdaddr_t *bdaddr)
3157 {
3158         struct sk_buff *skb;
3159         u8 buf[10];
3160         long ret;
3161
3162         buf[0] = 0x01;
3163         buf[1] = 0x01;
3164         buf[2] = 0x00;
3165         buf[3] = sizeof(bdaddr_t);
3166         memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
3167
3168         skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
3169         if (IS_ERR(skb)) {
3170                 ret = PTR_ERR(skb);
3171                 bt_dev_err(hdev, "Change address command failed (%ld)", ret);
3172                 return ret;
3173         }
3174         kfree_skb(skb);
3175
3176         return 0;
3177 }
3178
3179 #define QCA_DFU_PACKET_LEN      4096
3180
3181 #define QCA_GET_TARGET_VERSION  0x09
3182 #define QCA_CHECK_STATUS        0x05
3183 #define QCA_DFU_DOWNLOAD        0x01
3184
3185 #define QCA_SYSCFG_UPDATED      0x40
3186 #define QCA_PATCH_UPDATED       0x80
3187 #define QCA_DFU_TIMEOUT         3000
3188
3189 struct qca_version {
3190         __le32  rom_version;
3191         __le32  patch_version;
3192         __le32  ram_version;
3193         __le32  ref_clock;
3194         __u8    reserved[4];
3195 } __packed;
3196
3197 struct qca_rampatch_version {
3198         __le16  rom_version;
3199         __le16  patch_version;
3200 } __packed;
3201
3202 struct qca_device_info {
3203         u32     rom_version;
3204         u8      rampatch_hdr;   /* length of header in rampatch */
3205         u8      nvm_hdr;        /* length of header in NVM */
3206         u8      ver_offset;     /* offset of version structure in rampatch */
3207 };
3208
3209 static const struct qca_device_info qca_devices_table[] = {
3210         { 0x00000100, 20, 4, 10 }, /* Rome 1.0 */
3211         { 0x00000101, 20, 4, 10 }, /* Rome 1.1 */
3212         { 0x00000200, 28, 4, 18 }, /* Rome 2.0 */
3213         { 0x00000201, 28, 4, 18 }, /* Rome 2.1 */
3214         { 0x00000300, 28, 4, 18 }, /* Rome 3.0 */
3215         { 0x00000302, 28, 4, 18 }, /* Rome 3.2 */
3216 };
3217
3218 static int btusb_qca_send_vendor_req(struct usb_device *udev, u8 request,
3219                                      void *data, u16 size)
3220 {
3221         int pipe, err;
3222         u8 *buf;
3223
3224         buf = kmalloc(size, GFP_KERNEL);
3225         if (!buf)
3226                 return -ENOMEM;
3227
3228         /* Found some of USB hosts have IOT issues with ours so that we should
3229          * not wait until HCI layer is ready.
3230          */
3231         pipe = usb_rcvctrlpipe(udev, 0);
3232         err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
3233                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
3234         if (err < 0) {
3235                 dev_err(&udev->dev, "Failed to access otp area (%d)", err);
3236                 goto done;
3237         }
3238
3239         memcpy(data, buf, size);
3240
3241 done:
3242         kfree(buf);
3243
3244         return err;
3245 }
3246
3247 static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
3248                                        const struct firmware *firmware,
3249                                        size_t hdr_size)
3250 {
3251         struct btusb_data *btdata = hci_get_drvdata(hdev);
3252         struct usb_device *udev = btdata->udev;
3253         size_t count, size, sent = 0;
3254         int pipe, len, err;
3255         u8 *buf;
3256
3257         buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
3258         if (!buf)
3259                 return -ENOMEM;
3260
3261         count = firmware->size;
3262
3263         size = min_t(size_t, count, hdr_size);
3264         memcpy(buf, firmware->data, size);
3265
3266         /* USB patches should go down to controller through USB path
3267          * because binary format fits to go down through USB channel.
3268          * USB control path is for patching headers and USB bulk is for
3269          * patch body.
3270          */
3271         pipe = usb_sndctrlpipe(udev, 0);
3272         err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
3273                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
3274         if (err < 0) {
3275                 bt_dev_err(hdev, "Failed to send headers (%d)", err);
3276                 goto done;
3277         }
3278
3279         sent += size;
3280         count -= size;
3281
3282         while (count) {
3283                 size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
3284
3285                 memcpy(buf, firmware->data + sent, size);
3286
3287                 pipe = usb_sndbulkpipe(udev, 0x02);
3288                 err = usb_bulk_msg(udev, pipe, buf, size, &len,
3289                                    QCA_DFU_TIMEOUT);
3290                 if (err < 0) {
3291                         bt_dev_err(hdev, "Failed to send body at %zd of %zd (%d)",
3292                                    sent, firmware->size, err);
3293                         break;
3294                 }
3295
3296                 if (size != len) {
3297                         bt_dev_err(hdev, "Failed to get bulk buffer");
3298                         err = -EILSEQ;
3299                         break;
3300                 }
3301
3302                 sent  += size;
3303                 count -= size;
3304         }
3305
3306 done:
3307         kfree(buf);
3308         return err;
3309 }
3310
3311 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
3312                                          struct qca_version *ver,
3313                                          const struct qca_device_info *info)
3314 {
3315         struct qca_rampatch_version *rver;
3316         const struct firmware *fw;
3317         u32 ver_rom, ver_patch;
3318         u16 rver_rom, rver_patch;
3319         char fwname[64];
3320         int err;
3321
3322         ver_rom = le32_to_cpu(ver->rom_version);
3323         ver_patch = le32_to_cpu(ver->patch_version);
3324
3325         snprintf(fwname, sizeof(fwname), "/*(DEBLOBBED)*/", ver_rom);
3326
3327         err = reject_firmware(&fw, fwname, &hdev->dev);
3328         if (err) {
3329                 bt_dev_err(hdev, "failed to request rampatch file: %s (%d)",
3330                            fwname, err);
3331                 return err;
3332         }
3333
3334         bt_dev_info(hdev, "using rampatch file: %s", fwname);
3335
3336         rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
3337         rver_rom = le16_to_cpu(rver->rom_version);
3338         rver_patch = le16_to_cpu(rver->patch_version);
3339
3340         bt_dev_info(hdev, "QCA: patch rome 0x%x build 0x%x, "
3341                     "firmware rome 0x%x build 0x%x",
3342                     rver_rom, rver_patch, ver_rom, ver_patch);
3343
3344         if (rver_rom != ver_rom || rver_patch <= ver_patch) {
3345                 bt_dev_err(hdev, "rampatch file version did not match with firmware");
3346                 err = -EINVAL;
3347                 goto done;
3348         }
3349
3350         err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
3351
3352 done:
3353         release_firmware(fw);
3354
3355         return err;
3356 }
3357
3358 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
3359                                     struct qca_version *ver,
3360                                     const struct qca_device_info *info)
3361 {
3362         const struct firmware *fw;
3363         char fwname[64];
3364         int err;
3365
3366         snprintf(fwname, sizeof(fwname), "/*(DEBLOBBED)*/",
3367                  le32_to_cpu(ver->rom_version));
3368
3369         err = reject_firmware(&fw, fwname, &hdev->dev);
3370         if (err) {
3371                 bt_dev_err(hdev, "failed to request NVM file: %s (%d)",
3372                            fwname, err);
3373                 return err;
3374         }
3375
3376         bt_dev_info(hdev, "using NVM file: %s", fwname);
3377
3378         err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
3379
3380         release_firmware(fw);
3381
3382         return err;
3383 }
3384
3385 /* identify the ROM version and check whether patches are needed */
3386 static bool btusb_qca_need_patch(struct usb_device *udev)
3387 {
3388         struct qca_version ver;
3389
3390         if (btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3391                                       sizeof(ver)) < 0)
3392                 return false;
3393         /* only low ROM versions need patches */
3394         return !(le32_to_cpu(ver.rom_version) & ~0xffffU);
3395 }
3396
3397 static int btusb_setup_qca(struct hci_dev *hdev)
3398 {
3399         struct btusb_data *btdata = hci_get_drvdata(hdev);
3400         struct usb_device *udev = btdata->udev;
3401         const struct qca_device_info *info = NULL;
3402         struct qca_version ver;
3403         u32 ver_rom;
3404         u8 status;
3405         int i, err;
3406
3407         err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
3408                                         sizeof(ver));
3409         if (err < 0)
3410                 return err;
3411
3412         ver_rom = le32_to_cpu(ver.rom_version);
3413         /* Don't care about high ROM versions */
3414         if (ver_rom & ~0xffffU)
3415                 return 0;
3416
3417         for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
3418                 if (ver_rom == qca_devices_table[i].rom_version)
3419                         info = &qca_devices_table[i];
3420         }
3421         if (!info) {
3422                 bt_dev_err(hdev, "don't support firmware rome 0x%x", ver_rom);
3423                 return -ENODEV;
3424         }
3425
3426         err = btusb_qca_send_vendor_req(udev, QCA_CHECK_STATUS, &status,
3427                                         sizeof(status));
3428         if (err < 0)
3429                 return err;
3430
3431         if (!(status & QCA_PATCH_UPDATED)) {
3432                 err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
3433                 if (err < 0)
3434                         return err;
3435         }
3436
3437         if (!(status & QCA_SYSCFG_UPDATED)) {
3438                 err = btusb_setup_qca_load_nvm(hdev, &ver, info);
3439                 if (err < 0)
3440                         return err;
3441         }
3442
3443         return 0;
3444 }
3445
3446 static inline int __set_diag_interface(struct hci_dev *hdev)
3447 {
3448         struct btusb_data *data = hci_get_drvdata(hdev);
3449         struct usb_interface *intf = data->diag;
3450         int i;
3451
3452         if (!data->diag)
3453                 return -ENODEV;
3454
3455         data->diag_tx_ep = NULL;
3456         data->diag_rx_ep = NULL;
3457
3458         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
3459                 struct usb_endpoint_descriptor *ep_desc;
3460
3461                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
3462
3463                 if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
3464                         data->diag_tx_ep = ep_desc;
3465                         continue;
3466                 }
3467
3468                 if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
3469                         data->diag_rx_ep = ep_desc;
3470                         continue;
3471                 }
3472         }
3473
3474         if (!data->diag_tx_ep || !data->diag_rx_ep) {
3475                 bt_dev_err(hdev, "invalid diagnostic descriptors");
3476                 return -ENODEV;
3477         }
3478
3479         return 0;
3480 }
3481
3482 static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable)
3483 {
3484         struct btusb_data *data = hci_get_drvdata(hdev);
3485         struct sk_buff *skb;
3486         struct urb *urb;
3487         unsigned int pipe;
3488
3489         if (!data->diag_tx_ep)
3490                 return ERR_PTR(-ENODEV);
3491
3492         urb = usb_alloc_urb(0, GFP_KERNEL);
3493         if (!urb)
3494                 return ERR_PTR(-ENOMEM);
3495
3496         skb = bt_skb_alloc(2, GFP_KERNEL);
3497         if (!skb) {
3498                 usb_free_urb(urb);
3499                 return ERR_PTR(-ENOMEM);
3500         }
3501
3502         skb_put_u8(skb, 0xf0);
3503         skb_put_u8(skb, enable);
3504
3505         pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress);
3506
3507         usb_fill_bulk_urb(urb, data->udev, pipe,
3508                           skb->data, skb->len, btusb_tx_complete, skb);
3509
3510         skb->dev = (void *)hdev;
3511
3512         return urb;
3513 }
3514
3515 static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable)
3516 {
3517         struct btusb_data *data = hci_get_drvdata(hdev);
3518         struct urb *urb;
3519
3520         if (!data->diag)
3521                 return -ENODEV;
3522
3523         if (!test_bit(HCI_RUNNING, &hdev->flags))
3524                 return -ENETDOWN;
3525
3526         urb = alloc_diag_urb(hdev, enable);
3527         if (IS_ERR(urb))
3528                 return PTR_ERR(urb);
3529
3530         return submit_or_queue_tx_urb(hdev, urb);
3531 }
3532
3533 #ifdef CONFIG_PM
3534 static irqreturn_t btusb_oob_wake_handler(int irq, void *priv)
3535 {
3536         struct btusb_data *data = priv;
3537
3538         pm_wakeup_event(&data->udev->dev, 0);
3539         pm_system_wakeup();
3540
3541         /* Disable only if not already disabled (keep it balanced) */
3542         if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
3543                 disable_irq_nosync(irq);
3544                 disable_irq_wake(irq);
3545         }
3546         return IRQ_HANDLED;
3547 }
3548
3549 static const struct of_device_id btusb_match_table[] = {
3550         { .compatible = "usb1286,204e" },
3551         { .compatible = "usbcf3,e300" }, /* QCA6174A */
3552         { .compatible = "usb4ca,301a" }, /* QCA6174A (Lite-On) */
3553         { }
3554 };
3555 MODULE_DEVICE_TABLE(of, btusb_match_table);
3556
3557 /* Use an oob wakeup pin? */
3558 static int btusb_config_oob_wake(struct hci_dev *hdev)
3559 {
3560         struct btusb_data *data = hci_get_drvdata(hdev);
3561         struct device *dev = &data->udev->dev;
3562         int irq, ret;
3563
3564         clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
3565
3566         if (!of_match_device(btusb_match_table, dev))
3567                 return 0;
3568
3569         /* Move on if no IRQ specified */
3570         irq = of_irq_get_byname(dev->of_node, "wakeup");
3571         if (irq <= 0) {
3572                 bt_dev_dbg(hdev, "%s: no OOB Wakeup IRQ in DT", __func__);
3573                 return 0;
3574         }
3575
3576         irq_set_status_flags(irq, IRQ_NOAUTOEN);
3577         ret = devm_request_irq(&hdev->dev, irq, btusb_oob_wake_handler,
3578                                0, "OOB Wake-on-BT", data);
3579         if (ret) {
3580                 bt_dev_err(hdev, "%s: IRQ request failed", __func__);
3581                 return ret;
3582         }
3583
3584         ret = device_init_wakeup(dev, true);
3585         if (ret) {
3586                 bt_dev_err(hdev, "%s: failed to init_wakeup", __func__);
3587                 return ret;
3588         }
3589
3590         data->oob_wake_irq = irq;
3591         bt_dev_info(hdev, "OOB Wake-on-BT configured at IRQ %u", irq);
3592         return 0;
3593 }
3594 #endif
3595
3596 static void btusb_check_needs_reset_resume(struct usb_interface *intf)
3597 {
3598         if (dmi_check_system(btusb_needs_reset_resume_table))
3599                 interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME;
3600 }
3601
3602 static int btusb_probe(struct usb_interface *intf,
3603                        const struct usb_device_id *id)
3604 {
3605         struct usb_endpoint_descriptor *ep_desc;
3606         struct gpio_desc *reset_gpio;
3607         struct btusb_data *data;
3608         struct hci_dev *hdev;
3609         unsigned ifnum_base;
3610         int i, err;
3611
3612         BT_DBG("intf %p id %p", intf, id);
3613
3614         /* interface numbers are hardcoded in the spec */
3615         if (intf->cur_altsetting->desc.bInterfaceNumber != 0) {
3616                 if (!(id->driver_info & BTUSB_IFNUM_2))
3617                         return -ENODEV;
3618                 if (intf->cur_altsetting->desc.bInterfaceNumber != 2)
3619                         return -ENODEV;
3620         }
3621
3622         ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber;
3623
3624         if (!id->driver_info) {
3625                 const struct usb_device_id *match;
3626
3627                 match = usb_match_id(intf, blacklist_table);
3628                 if (match)
3629                         id = match;
3630         }
3631
3632         if (id->driver_info == BTUSB_IGNORE)
3633                 return -ENODEV;
3634
3635         if (id->driver_info & BTUSB_ATH3012) {
3636                 struct usb_device *udev = interface_to_usbdev(intf);
3637
3638                 /* Old firmware would otherwise let ath3k driver load
3639                  * patch and sysconfig files
3640                  */
3641                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001 &&
3642                     !btusb_qca_need_patch(udev))
3643                         return -ENODEV;
3644         }
3645
3646         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
3647         if (!data)
3648                 return -ENOMEM;
3649
3650         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
3651                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
3652
3653                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
3654                         data->intr_ep = ep_desc;
3655                         continue;
3656                 }
3657
3658                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
3659                         data->bulk_tx_ep = ep_desc;
3660                         continue;
3661                 }
3662
3663                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
3664                         data->bulk_rx_ep = ep_desc;
3665                         continue;
3666                 }
3667         }
3668
3669         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
3670                 return -ENODEV;
3671
3672         if (id->driver_info & BTUSB_AMP) {
3673                 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
3674                 data->cmdreq = 0x2b;
3675         } else {
3676                 data->cmdreq_type = USB_TYPE_CLASS;
3677                 data->cmdreq = 0x00;
3678         }
3679
3680         data->udev = interface_to_usbdev(intf);
3681         data->intf = intf;
3682
3683         INIT_WORK(&data->work, btusb_work);
3684         INIT_WORK(&data->waker, btusb_waker);
3685         init_usb_anchor(&data->deferred);
3686         init_usb_anchor(&data->tx_anchor);
3687         spin_lock_init(&data->txlock);
3688
3689         init_usb_anchor(&data->intr_anchor);
3690         init_usb_anchor(&data->bulk_anchor);
3691         init_usb_anchor(&data->isoc_anchor);
3692         init_usb_anchor(&data->diag_anchor);
3693         init_usb_anchor(&data->ctrl_anchor);
3694         spin_lock_init(&data->rxlock);
3695
3696         if (id->driver_info & BTUSB_INTEL_NEW) {
3697                 data->recv_event = btusb_recv_event_intel;
3698                 data->recv_bulk = btusb_recv_bulk_intel;
3699                 set_bit(BTUSB_BOOTLOADER, &data->flags);
3700         } else {
3701                 data->recv_event = hci_recv_frame;
3702                 data->recv_bulk = btusb_recv_bulk;
3703         }
3704
3705         hdev = hci_alloc_dev();
3706         if (!hdev)
3707                 return -ENOMEM;
3708
3709         hdev->bus = HCI_USB;
3710         hci_set_drvdata(hdev, data);
3711
3712         if (id->driver_info & BTUSB_AMP)
3713                 hdev->dev_type = HCI_AMP;
3714         else
3715                 hdev->dev_type = HCI_PRIMARY;
3716
3717         data->hdev = hdev;
3718
3719         SET_HCIDEV_DEV(hdev, &intf->dev);
3720
3721         reset_gpio = gpiod_get_optional(&data->udev->dev, "reset",
3722                                         GPIOD_OUT_LOW);
3723         if (IS_ERR(reset_gpio)) {
3724                 err = PTR_ERR(reset_gpio);
3725                 goto out_free_dev;
3726         } else if (reset_gpio) {
3727                 data->reset_gpio = reset_gpio;
3728         }
3729
3730         hdev->open   = btusb_open;
3731         hdev->close  = btusb_close;
3732         hdev->flush  = btusb_flush;
3733         hdev->send   = btusb_send_frame;
3734         hdev->notify = btusb_notify;
3735
3736 #ifdef CONFIG_PM
3737         err = btusb_config_oob_wake(hdev);
3738         if (err)
3739                 goto out_free_dev;
3740
3741         /* Marvell devices may need a specific chip configuration */
3742         if (id->driver_info & BTUSB_MARVELL && data->oob_wake_irq) {
3743                 err = marvell_config_oob_wake(hdev);
3744                 if (err)
3745                         goto out_free_dev;
3746         }
3747 #endif
3748         if (id->driver_info & BTUSB_CW6622)
3749                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
3750
3751         if (id->driver_info & BTUSB_BCM2045)
3752                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
3753
3754         if (id->driver_info & BTUSB_BCM92035)
3755                 hdev->setup = btusb_setup_bcm92035;
3756
3757         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) &&
3758             (id->driver_info & BTUSB_BCM_PATCHRAM)) {
3759                 hdev->manufacturer = 15;
3760                 hdev->setup = btbcm_setup_patchram;
3761                 hdev->set_diag = btusb_bcm_set_diag;
3762                 hdev->set_bdaddr = btbcm_set_bdaddr;
3763
3764                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
3765                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
3766         }
3767
3768         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) &&
3769             (id->driver_info & BTUSB_BCM_APPLE)) {
3770                 hdev->manufacturer = 15;
3771                 hdev->setup = btbcm_setup_apple;
3772                 hdev->set_diag = btusb_bcm_set_diag;
3773
3774                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
3775                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
3776         }
3777
3778         if (id->driver_info & BTUSB_INTEL) {
3779                 hdev->manufacturer = 2;
3780                 hdev->setup = btusb_setup_intel;
3781                 hdev->shutdown = btusb_shutdown_intel;
3782                 hdev->set_diag = btintel_set_diag_mfg;
3783                 hdev->set_bdaddr = btintel_set_bdaddr;
3784                 hdev->cmd_timeout = btusb_intel_cmd_timeout;
3785                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3786                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3787                 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
3788         }
3789
3790         if (id->driver_info & BTUSB_INTEL_NEW) {
3791                 hdev->manufacturer = 2;
3792                 hdev->send = btusb_send_frame_intel;
3793                 hdev->setup = btusb_setup_intel_new;
3794                 hdev->shutdown = btusb_shutdown_intel_new;
3795                 hdev->hw_error = btintel_hw_error;
3796                 hdev->set_diag = btintel_set_diag;
3797                 hdev->set_bdaddr = btintel_set_bdaddr;
3798                 hdev->cmd_timeout = btusb_intel_cmd_timeout;
3799                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3800                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3801                 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
3802         }
3803
3804         if (id->driver_info & BTUSB_MARVELL)
3805                 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
3806
3807         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_MTK) &&
3808             (id->driver_info & BTUSB_MEDIATEK)) {
3809                 hdev->setup = btusb_mtk_setup;
3810                 hdev->shutdown = btusb_mtk_shutdown;
3811                 hdev->manufacturer = 70;
3812                 set_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks);
3813         }
3814
3815         if (id->driver_info & BTUSB_SWAVE) {
3816                 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
3817                 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
3818         }
3819
3820         if (id->driver_info & BTUSB_INTEL_BOOT) {
3821                 hdev->manufacturer = 2;
3822                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3823         }
3824
3825         if (id->driver_info & BTUSB_ATH3012) {
3826                 data->setup_on_usb = btusb_setup_qca;
3827                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
3828                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3829                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3830         }
3831
3832         if (id->driver_info & BTUSB_QCA_ROME) {
3833                 data->setup_on_usb = btusb_setup_qca;
3834                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
3835                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3836                 btusb_check_needs_reset_resume(intf);
3837         }
3838
3839         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_RTL) &&
3840             (id->driver_info & BTUSB_REALTEK)) {
3841                 hdev->setup = btrtl_setup_realtek;
3842                 hdev->shutdown = btrtl_shutdown_realtek;
3843                 hdev->cmd_timeout = btusb_rtl_cmd_timeout;
3844
3845                 /* Realtek devices lose their updated firmware over global
3846                  * suspend that means host doesn't send SET_FEATURE
3847                  * (DEVICE_REMOTE_WAKEUP)
3848                  */
3849                 set_bit(BTUSB_WAKEUP_DISABLE, &data->flags);
3850
3851                 err = usb_autopm_get_interface(intf);
3852                 if (err < 0)
3853                         goto out_free_dev;
3854         }
3855
3856         if (id->driver_info & BTUSB_AMP) {
3857                 /* AMP controllers do not support SCO packets */
3858                 data->isoc = NULL;
3859         } else {
3860                 /* Interface orders are hardcoded in the specification */
3861                 data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1);
3862                 data->isoc_ifnum = ifnum_base + 1;
3863         }
3864
3865         if (!reset)
3866                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3867
3868         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
3869                 if (!disable_scofix)
3870                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
3871         }
3872
3873         if (id->driver_info & BTUSB_BROKEN_ISOC)
3874                 data->isoc = NULL;
3875
3876         if (id->driver_info & BTUSB_WIDEBAND_SPEECH)
3877                 set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED, &hdev->quirks);
3878
3879         if (id->driver_info & BTUSB_DIGIANSWER) {
3880                 data->cmdreq_type = USB_TYPE_VENDOR;
3881                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3882         }
3883
3884         if (id->driver_info & BTUSB_CSR) {
3885                 struct usb_device *udev = data->udev;
3886                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
3887
3888                 /* Old firmware would otherwise execute USB reset */
3889                 if (bcdDevice < 0x117)
3890                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3891
3892                 /* Fake CSR devices with broken commands */
3893                 if (bcdDevice <= 0x100 || bcdDevice == 0x134)
3894                         hdev->setup = btusb_setup_csr;
3895
3896                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3897         }
3898
3899         if (id->driver_info & BTUSB_SNIFFER) {
3900                 struct usb_device *udev = data->udev;
3901
3902                 /* New sniffer firmware has crippled HCI interface */
3903                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
3904                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3905         }
3906
3907         if (id->driver_info & BTUSB_INTEL_BOOT) {
3908                 /* A bug in the bootloader causes that interrupt interface is
3909                  * only enabled after receiving SetInterface(0, AltSetting=0).
3910                  */
3911                 err = usb_set_interface(data->udev, 0, 0);
3912                 if (err < 0) {
3913                         BT_ERR("failed to set interface 0, alt 0 %d", err);
3914                         goto out_free_dev;
3915                 }
3916         }
3917
3918         if (data->isoc) {
3919                 err = usb_driver_claim_interface(&btusb_driver,
3920                                                  data->isoc, data);
3921                 if (err < 0)
3922                         goto out_free_dev;
3923         }
3924
3925         if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) && data->diag) {
3926                 if (!usb_driver_claim_interface(&btusb_driver,
3927                                                 data->diag, data))
3928                         __set_diag_interface(hdev);
3929                 else
3930                         data->diag = NULL;
3931         }
3932
3933         if (enable_autosuspend)
3934                 usb_enable_autosuspend(data->udev);
3935
3936         err = hci_register_dev(hdev);
3937         if (err < 0)
3938                 goto out_free_dev;
3939
3940         usb_set_intfdata(intf, data);
3941
3942         return 0;
3943
3944 out_free_dev:
3945         if (data->reset_gpio)
3946                 gpiod_put(data->reset_gpio);
3947         hci_free_dev(hdev);
3948         return err;
3949 }
3950
3951 static void btusb_disconnect(struct usb_interface *intf)
3952 {
3953         struct btusb_data *data = usb_get_intfdata(intf);
3954         struct hci_dev *hdev;
3955
3956         BT_DBG("intf %p", intf);
3957
3958         if (!data)
3959                 return;
3960
3961         hdev = data->hdev;
3962         usb_set_intfdata(data->intf, NULL);
3963
3964         if (data->isoc)
3965                 usb_set_intfdata(data->isoc, NULL);
3966
3967         if (data->diag)
3968                 usb_set_intfdata(data->diag, NULL);
3969
3970         hci_unregister_dev(hdev);
3971
3972         if (intf == data->intf) {
3973                 if (data->isoc)
3974                         usb_driver_release_interface(&btusb_driver, data->isoc);
3975                 if (data->diag)
3976                         usb_driver_release_interface(&btusb_driver, data->diag);
3977         } else if (intf == data->isoc) {
3978                 if (data->diag)
3979                         usb_driver_release_interface(&btusb_driver, data->diag);
3980                 usb_driver_release_interface(&btusb_driver, data->intf);
3981         } else if (intf == data->diag) {
3982                 usb_driver_release_interface(&btusb_driver, data->intf);
3983                 if (data->isoc)
3984                         usb_driver_release_interface(&btusb_driver, data->isoc);
3985         }
3986
3987         if (data->oob_wake_irq)
3988                 device_init_wakeup(&data->udev->dev, false);
3989
3990         if (data->reset_gpio)
3991                 gpiod_put(data->reset_gpio);
3992
3993         hci_free_dev(hdev);
3994 }
3995
3996 #ifdef CONFIG_PM
3997 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
3998 {
3999         struct btusb_data *data = usb_get_intfdata(intf);
4000
4001         BT_DBG("intf %p", intf);
4002
4003         if (data->suspend_count++)
4004                 return 0;
4005
4006         spin_lock_irq(&data->txlock);
4007         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
4008                 set_bit(BTUSB_SUSPENDING, &data->flags);
4009                 spin_unlock_irq(&data->txlock);
4010         } else {
4011                 spin_unlock_irq(&data->txlock);
4012                 data->suspend_count--;
4013                 return -EBUSY;
4014         }
4015
4016         cancel_work_sync(&data->work);
4017
4018         btusb_stop_traffic(data);
4019         usb_kill_anchored_urbs(&data->tx_anchor);
4020
4021         if (data->oob_wake_irq && device_may_wakeup(&data->udev->dev)) {
4022                 set_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
4023                 enable_irq_wake(data->oob_wake_irq);
4024                 enable_irq(data->oob_wake_irq);
4025         }
4026
4027         /* For global suspend, Realtek devices lose the loaded fw
4028          * in them. But for autosuspend, firmware should remain.
4029          * Actually, it depends on whether the usb host sends
4030          * set feature (enable wakeup) or not.
4031          */
4032         if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags)) {
4033                 if (PMSG_IS_AUTO(message) &&
4034                     device_can_wakeup(&data->udev->dev))
4035                         data->udev->do_remote_wakeup = 1;
4036                 else if (!PMSG_IS_AUTO(message))
4037                         data->udev->reset_resume = 1;
4038         }
4039
4040         return 0;
4041 }
4042
4043 static void play_deferred(struct btusb_data *data)
4044 {
4045         struct urb *urb;
4046         int err;
4047
4048         while ((urb = usb_get_from_anchor(&data->deferred))) {
4049                 usb_anchor_urb(urb, &data->tx_anchor);
4050
4051                 err = usb_submit_urb(urb, GFP_ATOMIC);
4052                 if (err < 0) {
4053                         if (err != -EPERM && err != -ENODEV)
4054                                 BT_ERR("%s urb %p submission failed (%d)",
4055                                        data->hdev->name, urb, -err);
4056                         kfree(urb->setup_packet);
4057                         usb_unanchor_urb(urb);
4058                         usb_free_urb(urb);
4059                         break;
4060                 }
4061
4062                 data->tx_in_flight++;
4063                 usb_free_urb(urb);
4064         }
4065
4066         /* Cleanup the rest deferred urbs. */
4067         while ((urb = usb_get_from_anchor(&data->deferred))) {
4068                 kfree(urb->setup_packet);
4069                 usb_free_urb(urb);
4070         }
4071 }
4072
4073 static int btusb_resume(struct usb_interface *intf)
4074 {
4075         struct btusb_data *data = usb_get_intfdata(intf);
4076         struct hci_dev *hdev = data->hdev;
4077         int err = 0;
4078
4079         BT_DBG("intf %p", intf);
4080
4081         if (--data->suspend_count)
4082                 return 0;
4083
4084         /* Disable only if not already disabled (keep it balanced) */
4085         if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
4086                 disable_irq(data->oob_wake_irq);
4087                 disable_irq_wake(data->oob_wake_irq);
4088         }
4089
4090         if (!test_bit(HCI_RUNNING, &hdev->flags))
4091                 goto done;
4092
4093         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
4094                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
4095                 if (err < 0) {
4096                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
4097                         goto failed;
4098                 }
4099         }
4100
4101         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
4102                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
4103                 if (err < 0) {
4104                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
4105                         goto failed;
4106                 }
4107
4108                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
4109         }
4110
4111         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
4112                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
4113                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
4114                 else
4115                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
4116         }
4117
4118         spin_lock_irq(&data->txlock);
4119         play_deferred(data);
4120         clear_bit(BTUSB_SUSPENDING, &data->flags);
4121         spin_unlock_irq(&data->txlock);
4122         schedule_work(&data->work);
4123
4124         return 0;
4125
4126 failed:
4127         usb_scuttle_anchored_urbs(&data->deferred);
4128 done:
4129         spin_lock_irq(&data->txlock);
4130         clear_bit(BTUSB_SUSPENDING, &data->flags);
4131         spin_unlock_irq(&data->txlock);
4132
4133         return err;
4134 }
4135 #endif
4136
4137 static struct usb_driver btusb_driver = {
4138         .name           = "btusb",
4139         .probe          = btusb_probe,
4140         .disconnect     = btusb_disconnect,
4141 #ifdef CONFIG_PM
4142         .suspend        = btusb_suspend,
4143         .resume         = btusb_resume,
4144 #endif
4145         .id_table       = btusb_table,
4146         .supports_autosuspend = 1,
4147         .disable_hub_initiated_lpm = 1,
4148 };
4149
4150 module_usb_driver(btusb_driver);
4151
4152 module_param(disable_scofix, bool, 0644);
4153 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
4154
4155 module_param(force_scofix, bool, 0644);
4156 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
4157
4158 module_param(enable_autosuspend, bool, 0644);
4159 MODULE_PARM_DESC(enable_autosuspend, "Enable USB autosuspend by default");
4160
4161 module_param(reset, bool, 0644);
4162 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
4163
4164 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
4165 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
4166 MODULE_VERSION(VERSION);
4167 MODULE_LICENSE("GPL");