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/of_device.h>
  15 #include <linux/of_irq.h>
  16 #include <linux/suspend.h>
  17 #include <linux/gpio/consumer.h>
  18 #include <asm/unaligned.h>
  19
  20 #include <net/bluetooth/bluetooth.h>
  21 #include <net/bluetooth/hci_core.h>
  22
  23 #include "btintel.h"
  24 #include "btbcm.h"
  25 #include "btrtl.h"
  26
  27 #define VERSION "0.8"
  28
  29 static bool disable_scofix;
  30 static bool force_scofix;
  31 static bool enable_autosuspend = IS_ENABLED(CONFIG_BT_HCIBTUSB_AUTOSUSPEND);
  32
  33 static bool reset = true;
  34
  35 static struct usb_driver btusb_driver;
  36
  37 #define BTUSB_IGNORE            0x01
  38 #define BTUSB_DIGIANSWER        0x02
  39 #define BTUSB_CSR               0x04
  40 #define BTUSB_SNIFFER           0x08
  41 #define BTUSB_BCM92035          0x10
  42 #define BTUSB_BROKEN_ISOC       0x20
  43 #define BTUSB_WRONG_SCO_MTU     0x40
  44 #define BTUSB_ATH3012           0x80
  45 #define BTUSB_INTEL             0x100
  46 #define BTUSB_INTEL_BOOT        0x200
  47 #define BTUSB_BCM_PATCHRAM      0x400
  48 #define BTUSB_MARVELL           0x800
  49 #define BTUSB_SWAVE             0x1000
  50 #define BTUSB_INTEL_NEW         0x2000
  51 #define BTUSB_AMP               0x4000
  52 #define BTUSB_QCA_ROME          0x8000
  53 #define BTUSB_BCM_APPLE         0x10000
  54 #define BTUSB_REALTEK           0x20000
  55 #define BTUSB_BCM2045           0x40000
  56 #define BTUSB_IFNUM_2           0x80000
  57 #define BTUSB_CW6622            0x100000
  58
  59 static const struct usb_device_id btusb_table[] = {
  60         /* Generic Bluetooth USB device */
  61         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  62
  63         /* Generic Bluetooth AMP device */
  64         { USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP },
  65
  66         /* Generic Bluetooth USB interface */
  67         { USB_INTERFACE_INFO(0xe0, 0x01, 0x01) },
  68
  69         /* Apple-specific (Broadcom) devices */
  70         { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01),
  71           .driver_info = BTUSB_BCM_APPLE | BTUSB_IFNUM_2 },
  72
  73         /* MediaTek MT76x0E */
  74         { USB_DEVICE(0x0e8d, 0x763f) },
  75
  76         /* Broadcom SoftSailing reporting vendor specific */
  77         { USB_DEVICE(0x0a5c, 0x21e1) },
  78
  79         /* Apple MacBookPro 7,1 */
  80         { USB_DEVICE(0x05ac, 0x8213) },
  81
  82         /* Apple iMac11,1 */
  83         { USB_DEVICE(0x05ac, 0x8215) },
  84
  85         /* Apple MacBookPro6,2 */
  86         { USB_DEVICE(0x05ac, 0x8218) },
  87
  88         /* Apple MacBookAir3,1, MacBookAir3,2 */
  89         { USB_DEVICE(0x05ac, 0x821b) },
  90
  91         /* Apple MacBookAir4,1 */
  92         { USB_DEVICE(0x05ac, 0x821f) },
  93
  94         /* Apple MacBookPro8,2 */
  95         { USB_DEVICE(0x05ac, 0x821a) },
  96
  97         /* Apple MacMini5,1 */
  98         { USB_DEVICE(0x05ac, 0x8281) },
  99
 100         /* AVM BlueFRITZ! USB v2.0 */
 101         { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE },
 102
 103         /* Bluetooth Ultraport Module from IBM */
 104         { USB_DEVICE(0x04bf, 0x030a) },
 105
 106         /* ALPS Modules with non-standard id */
 107         { USB_DEVICE(0x044e, 0x3001) },
 108         { USB_DEVICE(0x044e, 0x3002) },
 109
 110         /* Ericsson with non-standard id */
 111         { USB_DEVICE(0x0bdb, 0x1002) },
 112
 113         /* Canyon CN-BTU1 with HID interfaces */
 114         { USB_DEVICE(0x0c10, 0x0000) },
 115
 116         /* Broadcom BCM20702A0 */
 117         { USB_DEVICE(0x413c, 0x8197) },
 118
 119         /* Broadcom BCM20702B0 (Dynex/Insignia) */
 120         { USB_DEVICE(0x19ff, 0x0239), .driver_info = BTUSB_BCM_PATCHRAM },
 121
 122         /* Broadcom BCM43142A0 (Foxconn/Lenovo) */
 123         { USB_VENDOR_AND_INTERFACE_INFO(0x105b, 0xff, 0x01, 0x01),
 124           .driver_info = BTUSB_BCM_PATCHRAM },
 125
 126         /* Broadcom BCM920703 (HTC Vive) */
 127         { USB_VENDOR_AND_INTERFACE_INFO(0x0bb4, 0xff, 0x01, 0x01),
 128           .driver_info = BTUSB_BCM_PATCHRAM },
 129
 130         /* Foxconn - Hon Hai */
 131         { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01),
 132           .driver_info = BTUSB_BCM_PATCHRAM },
 133
 134         /* Lite-On Technology - Broadcom based */
 135         { USB_VENDOR_AND_INTERFACE_INFO(0x04ca, 0xff, 0x01, 0x01),
 136           .driver_info = BTUSB_BCM_PATCHRAM },
 137
 138         /* Broadcom devices with vendor specific id */
 139         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
 140           .driver_info = BTUSB_BCM_PATCHRAM },
 141
 142         /* ASUSTek Computer - Broadcom based */
 143         { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01),
 144           .driver_info = BTUSB_BCM_PATCHRAM },
 145
 146         /* Belkin F8065bf - Broadcom based */
 147         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01),
 148           .driver_info = BTUSB_BCM_PATCHRAM },
 149
 150         /* IMC Networks - Broadcom based */
 151         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01),
 152           .driver_info = BTUSB_BCM_PATCHRAM },
 153
 154         /* Dell Computer - Broadcom based  */
 155         { USB_VENDOR_AND_INTERFACE_INFO(0x413c, 0xff, 0x01, 0x01),
 156           .driver_info = BTUSB_BCM_PATCHRAM },
 157
 158         /* Toshiba Corp - Broadcom based */
 159         { USB_VENDOR_AND_INTERFACE_INFO(0x0930, 0xff, 0x01, 0x01),
 160           .driver_info = BTUSB_BCM_PATCHRAM },
 161
 162         /* Intel Bluetooth USB Bootloader (RAM module) */
 163         { USB_DEVICE(0x8087, 0x0a5a),
 164           .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
 165
 166         { }     /* Terminating entry */
 167 };
 168
 169 MODULE_DEVICE_TABLE(usb, btusb_table);
 170
 171 static const struct usb_device_id blacklist_table[] = {
 172         /* CSR BlueCore devices */
 173         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 174
 175         /* Broadcom BCM2033 without firmware */
 176         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 177
 178         /* Broadcom BCM2045 devices */
 179         { USB_DEVICE(0x0a5c, 0x2045), .driver_info = BTUSB_BCM2045 },
 180
 181         /* Atheros 3011 with sflash firmware */
 182         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 183         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 184         { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE },
 185         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 186         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 187         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 188         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 189
 190         /* Atheros AR9285 Malbec with sflash firmware */
 191         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 192
 193         /* Atheros 3012 with sflash firmware */
 194         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 195         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 196         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 197         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 198         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 199         { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
 200         { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
 201         { USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 },
 202         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 203         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 204         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 205         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 206         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 207         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 208         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 209         { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 },
 210         { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
 211         { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
 212         { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 },
 213         { USB_DEVICE(0x04ca, 0x3018), .driver_info = BTUSB_ATH3012 },
 214         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 215         { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
 216         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 217         { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
 218         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 219         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 220         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 221         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 222         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 223         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
 224         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 225         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 226         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 227         { USB_DEVICE(0x0cf3, 0x817b), .driver_info = BTUSB_ATH3012 },
 228         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 229         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 230         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 231         { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 },
 232         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 233         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 234         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 235         { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 },
 236         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 237         { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
 238         { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
 239         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
 240         { USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 },
 241         { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
 242         { USB_DEVICE(0x13d3, 0x3487), .driver_info = BTUSB_ATH3012 },
 243         { USB_DEVICE(0x13d3, 0x3490), .driver_info = BTUSB_ATH3012 },
 244
 245         /* Atheros AR5BBU12 with sflash firmware */
 246         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 247
 248         /* Atheros AR5BBU12 with sflash firmware */
 249         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 250         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 251
 252         /* QCA ROME chipset */
 253         { USB_DEVICE(0x0cf3, 0x535b), .driver_info = BTUSB_QCA_ROME },
 254         { USB_DEVICE(0x0cf3, 0xe007), .driver_info = BTUSB_QCA_ROME },
 255         { USB_DEVICE(0x0cf3, 0xe009), .driver_info = BTUSB_QCA_ROME },
 256         { USB_DEVICE(0x0cf3, 0xe010), .driver_info = BTUSB_QCA_ROME },
 257         { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME },
 258         { USB_DEVICE(0x0cf3, 0xe301), .driver_info = BTUSB_QCA_ROME },
 259         { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME },
 260         { USB_DEVICE(0x0489, 0xe092), .driver_info = BTUSB_QCA_ROME },
 261         { USB_DEVICE(0x0489, 0xe09f), .driver_info = BTUSB_QCA_ROME },
 262         { USB_DEVICE(0x0489, 0xe0a2), .driver_info = BTUSB_QCA_ROME },
 263         { USB_DEVICE(0x04ca, 0x3011), .driver_info = BTUSB_QCA_ROME },
 264         { USB_DEVICE(0x04ca, 0x3015), .driver_info = BTUSB_QCA_ROME },
 265         { USB_DEVICE(0x04ca, 0x3016), .driver_info = BTUSB_QCA_ROME },
 266         { USB_DEVICE(0x04ca, 0x301a), .driver_info = BTUSB_QCA_ROME },
 267         { USB_DEVICE(0x13d3, 0x3496), .driver_info = BTUSB_QCA_ROME },
 268
 269         /* Broadcom BCM2035 */
 270         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 271         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 272         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 273
 274         /* Broadcom BCM2045 */
 275         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 276         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 277
 278         /* IBM/Lenovo ThinkPad with Broadcom chip */
 279         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 280         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 281
 282         /* HP laptop with Broadcom chip */
 283         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 284
 285         /* Dell laptop with Broadcom chip */
 286         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 287
 288         /* Dell Wireless 370 and 410 devices */
 289         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 290         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 291
 292         /* Belkin F8T012 and F8T013 devices */
 293         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 294         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 295
 296         /* Asus WL-BTD202 device */
 297         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 298
 299         /* Kensington Bluetooth USB adapter */
 300         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 301
 302         /* RTX Telecom based adapters with buggy SCO support */
 303         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 304         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 305
 306         /* CONWISE Technology based adapters with buggy SCO support */
 307         { USB_DEVICE(0x0e5e, 0x6622),
 308           .driver_info = BTUSB_BROKEN_ISOC | BTUSB_CW6622},
 309
 310         /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */
 311         { USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE },
 312
 313         /* Digianswer devices */
 314         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 315         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 316
 317         /* CSR BlueCore Bluetooth Sniffer */
 318         { USB_DEVICE(0x0a12, 0x0002),
 319           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 320
 321         /* Frontline ComProbe Bluetooth Sniffer */
 322         { USB_DEVICE(0x16d3, 0x0002),
 323           .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC },
 324
 325         /* Marvell Bluetooth devices */
 326         { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL },
 327         { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL },
 328         { USB_DEVICE(0x1286, 0x204e), .driver_info = BTUSB_MARVELL },
 329
 330         /* Intel Bluetooth devices */
 331         { USB_DEVICE(0x8087, 0x0025), .driver_info = BTUSB_INTEL_NEW },
 332         { USB_DEVICE(0x8087, 0x0026), .driver_info = BTUSB_INTEL_NEW },
 333         { USB_DEVICE(0x8087, 0x0029), .driver_info = BTUSB_INTEL_NEW },
 334         { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR },
 335         { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL },
 336         { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL },
 337         { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_NEW },
 338         { USB_DEVICE(0x8087, 0x0aa7), .driver_info = BTUSB_INTEL },
 339         { USB_DEVICE(0x8087, 0x0aaa), .driver_info = BTUSB_INTEL_NEW },
 340
 341         /* Other Intel Bluetooth devices */
 342         { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01),
 343           .driver_info = BTUSB_IGNORE },
 344
 345         /* Realtek Bluetooth devices */
 346         { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01),
 347           .driver_info = BTUSB_REALTEK },
 348
 349         /* Additional Realtek 8723AE Bluetooth devices */
 350         { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK },
 351         { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK },
 352
 353         /* Additional Realtek 8723BE Bluetooth devices */
 354         { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK },
 355         { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK },
 356         { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK },
 357         { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK },
 358         { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK },
 359         { USB_DEVICE(0x13d3, 0x3494), .driver_info = BTUSB_REALTEK },
 360
 361         /* Additional Realtek 8723BU Bluetooth devices */
 362         { USB_DEVICE(0x7392, 0xa611), .driver_info = BTUSB_REALTEK },
 363
 364         /* Additional Realtek 8723DE Bluetooth devices */
 365         { USB_DEVICE(0x0bda, 0xb009), .driver_info = BTUSB_REALTEK },
 366         { USB_DEVICE(0x2ff8, 0xb011), .driver_info = BTUSB_REALTEK },
 367
 368         /* Additional Realtek 8821AE Bluetooth devices */
 369         { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK },
 370         { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK },
 371         { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK },
 372         { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK },
 373         { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK },
 374
 375         /* Additional Realtek 8822BE Bluetooth devices */
 376         { USB_DEVICE(0x13d3, 0x3526), .driver_info = BTUSB_REALTEK },
 377         { USB_DEVICE(0x0b05, 0x185c), .driver_info = BTUSB_REALTEK },
 378
 379         /* Silicon Wave based devices */
 380         { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE },
 381
 382         { }     /* Terminating entry */
 383 };
 384
 385 /* The Bluetooth USB module build into some devices needs to be reset on resume,
 386  * this is a problem with the platform (likely shutting off all power) not with
 387  * the module itself. So we use a DMI list to match known broken platforms.
 388  */
 389 static const struct dmi_system_id btusb_needs_reset_resume_table[] = {
 390         {
 391                 /* Dell OptiPlex 3060 (QCA ROME device 0cf3:e007) */
 392                 .matches = {
 393                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 394                         DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 3060"),
 395                 },
 396         },
 397         {
 398                 /* Dell XPS 9360 (QCA ROME device 0cf3:e300) */
 399                 .matches = {
 400                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 401                         DMI_MATCH(DMI_PRODUCT_NAME, "XPS 13 9360"),
 402                 },
 403         },
 404         {
 405                 /* Dell Inspiron 5565 (QCA ROME device 0cf3:e009) */
 406                 .matches = {
 407                         DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
 408                         DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5565"),
 409                 },
 410         },
 411         {}
 412 };
 413
 414 #define BTUSB_MAX_ISOC_FRAMES   10
 415
 416 #define BTUSB_INTR_RUNNING      0
 417 #define BTUSB_BULK_RUNNING      1
 418 #define BTUSB_ISOC_RUNNING      2
 419 #define BTUSB_SUSPENDING        3
 420 #define BTUSB_DID_ISO_RESUME    4
 421 #define BTUSB_BOOTLOADER        5
 422 #define BTUSB_DOWNLOADING       6
 423 #define BTUSB_FIRMWARE_LOADED   7
 424 #define BTUSB_FIRMWARE_FAILED   8
 425 #define BTUSB_BOOTING           9
 426 #define BTUSB_DIAG_RUNNING      10
 427 #define BTUSB_OOB_WAKE_ENABLED  11
 428 #define BTUSB_HW_RESET_ACTIVE   12
 429
 430 struct btusb_data {
 431         struct hci_dev       *hdev;
 432         struct usb_device    *udev;
 433         struct usb_interface *intf;
 434         struct usb_interface *isoc;
 435         struct usb_interface *diag;
 436         unsigned isoc_ifnum;
 437
 438         unsigned long flags;
 439
 440         struct work_struct work;
 441         struct work_struct waker;
 442
 443         struct usb_anchor deferred;
 444         struct usb_anchor tx_anchor;
 445         int tx_in_flight;
 446         spinlock_t txlock;
 447
 448         struct usb_anchor intr_anchor;
 449         struct usb_anchor bulk_anchor;
 450         struct usb_anchor isoc_anchor;
 451         struct usb_anchor diag_anchor;
 452         spinlock_t rxlock;
 453
 454         struct sk_buff *evt_skb;
 455         struct sk_buff *acl_skb;
 456         struct sk_buff *sco_skb;
 457
 458         struct usb_endpoint_descriptor *intr_ep;
 459         struct usb_endpoint_descriptor *bulk_tx_ep;
 460         struct usb_endpoint_descriptor *bulk_rx_ep;
 461         struct usb_endpoint_descriptor *isoc_tx_ep;
 462         struct usb_endpoint_descriptor *isoc_rx_ep;
 463         struct usb_endpoint_descriptor *diag_tx_ep;
 464         struct usb_endpoint_descriptor *diag_rx_ep;
 465
 466         struct gpio_desc *reset_gpio;
 467
 468         __u8 cmdreq_type;
 469         __u8 cmdreq;
 470
 471         unsigned int sco_num;
 472         int isoc_altsetting;
 473         int suspend_count;
 474
 475         int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb);
 476         int (*recv_bulk)(struct btusb_data *data, void *buffer, int count);
 477
 478         int (*setup_on_usb)(struct hci_dev *hdev);
 479
 480         int oob_wake_irq;   /* irq for out-of-band wake-on-bt */
 481         unsigned cmd_timeout_cnt;
 482 };
 483
 484
 485 static void btusb_intel_cmd_timeout(struct hci_dev *hdev)
 486 {
 487         struct btusb_data *data = hci_get_drvdata(hdev);
 488         struct gpio_desc *reset_gpio = data->reset_gpio;
 489
 490         if (++data->cmd_timeout_cnt < 5)
 491                 return;
 492
 493         if (!reset_gpio) {
 494                 bt_dev_err(hdev, "No way to reset. Ignoring and continuing");
 495                 return;
 496         }
 497
 498         /*
 499          * Toggle the hard reset line if the platform provides one. The reset
 500          * is going to yank the device off the USB and then replug. So doing
 501          * once is enough. The cleanup is handled correctly on the way out
 502          * (standard USB disconnect), and the new device is detected cleanly
 503          * and bound to the driver again like it should be.
 504          */
 505         if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) {
 506                 bt_dev_err(hdev, "last reset failed? Not resetting again");
 507                 return;
 508         }
 509
 510         bt_dev_err(hdev, "Initiating HW reset via gpio");
 511         gpiod_set_value_cansleep(reset_gpio, 1);
 512         msleep(100);
 513         gpiod_set_value_cansleep(reset_gpio, 0);
 514 }
 515
 516 static inline void btusb_free_frags(struct btusb_data *data)
 517 {
 518         unsigned long flags;
 519
 520         spin_lock_irqsave(&data->rxlock, flags);
 521
 522         kfree_skb(data->evt_skb);
 523         data->evt_skb = NULL;
 524
 525         kfree_skb(data->acl_skb);
 526         data->acl_skb = NULL;
 527
 528         kfree_skb(data->sco_skb);
 529         data->sco_skb = NULL;
 530
 531         spin_unlock_irqrestore(&data->rxlock, flags);
 532 }
 533
 534 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count)
 535 {
 536         struct sk_buff *skb;
 537         unsigned long flags;
 538         int err = 0;
 539
 540         spin_lock_irqsave(&data->rxlock, flags);
 541         skb = data->evt_skb;
 542
 543         while (count) {
 544                 int len;
 545
 546                 if (!skb) {
 547                         skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC);
 548                         if (!skb) {
 549                                 err = -ENOMEM;
 550                                 break;
 551                         }
 552
 553                         hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
 554                         hci_skb_expect(skb) = HCI_EVENT_HDR_SIZE;
 555                 }
 556
 557                 len = min_t(uint, hci_skb_expect(skb), count);
 558                 skb_put_data(skb, buffer, len);
 559
 560                 count -= len;
 561                 buffer += len;
 562                 hci_skb_expect(skb) -= len;
 563
 564                 if (skb->len == HCI_EVENT_HDR_SIZE) {
 565                         /* Complete event header */
 566                         hci_skb_expect(skb) = hci_event_hdr(skb)->plen;
 567
 568                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 569                                 kfree_skb(skb);
 570                                 skb = NULL;
 571
 572                                 err = -EILSEQ;
 573                                 break;
 574                         }
 575                 }
 576
 577                 if (!hci_skb_expect(skb)) {
 578                         /* Complete frame */
 579                         data->recv_event(data->hdev, skb);
 580                         skb = NULL;
 581                 }
 582         }
 583
 584         data->evt_skb = skb;
 585         spin_unlock_irqrestore(&data->rxlock, flags);
 586
 587         return err;
 588 }
 589
 590 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count)
 591 {
 592         struct sk_buff *skb;
 593         unsigned long flags;
 594         int err = 0;
 595
 596         spin_lock_irqsave(&data->rxlock, flags);
 597         skb = data->acl_skb;
 598
 599         while (count) {
 600                 int len;
 601
 602                 if (!skb) {
 603                         skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
 604                         if (!skb) {
 605                                 err = -ENOMEM;
 606                                 break;
 607                         }
 608
 609                         hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT;
 610                         hci_skb_expect(skb) = HCI_ACL_HDR_SIZE;
 611                 }
 612
 613                 len = min_t(uint, hci_skb_expect(skb), count);
 614                 skb_put_data(skb, buffer, len);
 615
 616                 count -= len;
 617                 buffer += len;
 618                 hci_skb_expect(skb) -= len;
 619
 620                 if (skb->len == HCI_ACL_HDR_SIZE) {
 621                         __le16 dlen = hci_acl_hdr(skb)->dlen;
 622
 623                         /* Complete ACL header */
 624                         hci_skb_expect(skb) = __le16_to_cpu(dlen);
 625
 626                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 627                                 kfree_skb(skb);
 628                                 skb = NULL;
 629
 630                                 err = -EILSEQ;
 631                                 break;
 632                         }
 633                 }
 634
 635                 if (!hci_skb_expect(skb)) {
 636                         /* Complete frame */
 637                         hci_recv_frame(data->hdev, skb);
 638                         skb = NULL;
 639                 }
 640         }
 641
 642         data->acl_skb = skb;
 643         spin_unlock_irqrestore(&data->rxlock, flags);
 644
 645         return err;
 646 }
 647
 648 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count)
 649 {
 650         struct sk_buff *skb;
 651         unsigned long flags;
 652         int err = 0;
 653
 654         spin_lock_irqsave(&data->rxlock, flags);
 655         skb = data->sco_skb;
 656
 657         while (count) {
 658                 int len;
 659
 660                 if (!skb) {
 661                         skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC);
 662                         if (!skb) {
 663                                 err = -ENOMEM;
 664                                 break;
 665                         }
 666
 667                         hci_skb_pkt_type(skb) = HCI_SCODATA_PKT;
 668                         hci_skb_expect(skb) = HCI_SCO_HDR_SIZE;
 669                 }
 670
 671                 len = min_t(uint, hci_skb_expect(skb), count);
 672                 skb_put_data(skb, buffer, len);
 673
 674                 count -= len;
 675                 buffer += len;
 676                 hci_skb_expect(skb) -= len;
 677
 678                 if (skb->len == HCI_SCO_HDR_SIZE) {
 679                         /* Complete SCO header */
 680                         hci_skb_expect(skb) = hci_sco_hdr(skb)->dlen;
 681
 682                         if (skb_tailroom(skb) < hci_skb_expect(skb)) {
 683                                 kfree_skb(skb);
 684                                 skb = NULL;
 685
 686                                 err = -EILSEQ;
 687                                 break;
 688                         }
 689                 }
 690
 691                 if (!hci_skb_expect(skb)) {
 692                         /* Complete frame */
 693                         hci_recv_frame(data->hdev, skb);
 694                         skb = NULL;
 695                 }
 696         }
 697
 698         data->sco_skb = skb;
 699         spin_unlock_irqrestore(&data->rxlock, flags);
 700
 701         return err;
 702 }
 703
 704 static void btusb_intr_complete(struct urb *urb)
 705 {
 706         struct hci_dev *hdev = urb->context;
 707         struct btusb_data *data = hci_get_drvdata(hdev);
 708         int err;
 709
 710         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 711                urb->actual_length);
 712
 713         if (!test_bit(HCI_RUNNING, &hdev->flags))
 714                 return;
 715
 716         if (urb->status == 0) {
 717                 hdev->stat.byte_rx += urb->actual_length;
 718
 719                 if (btusb_recv_intr(data, urb->transfer_buffer,
 720                                     urb->actual_length) < 0) {
 721                         bt_dev_err(hdev, "corrupted event packet");
 722                         hdev->stat.err_rx++;
 723                 }
 724         } else if (urb->status == -ENOENT) {
 725                 /* Avoid suspend failed when usb_kill_urb */
 726                 return;
 727         }
 728
 729         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 730                 return;
 731
 732         usb_mark_last_busy(data->udev);
 733         usb_anchor_urb(urb, &data->intr_anchor);
 734
 735         err = usb_submit_urb(urb, GFP_ATOMIC);
 736         if (err < 0) {
 737                 /* -EPERM: urb is being killed;
 738                  * -ENODEV: device got disconnected
 739                  */
 740                 if (err != -EPERM && err != -ENODEV)
 741                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
 742                                    urb, -err);
 743                 usb_unanchor_urb(urb);
 744         }
 745 }
 746
 747 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 748 {
 749         struct btusb_data *data = hci_get_drvdata(hdev);
 750         struct urb *urb;
 751         unsigned char *buf;
 752         unsigned int pipe;
 753         int err, size;
 754
 755         BT_DBG("%s", hdev->name);
 756
 757         if (!data->intr_ep)
 758                 return -ENODEV;
 759
 760         urb = usb_alloc_urb(0, mem_flags);
 761         if (!urb)
 762                 return -ENOMEM;
 763
 764         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 765
 766         buf = kmalloc(size, mem_flags);
 767         if (!buf) {
 768                 usb_free_urb(urb);
 769                 return -ENOMEM;
 770         }
 771
 772         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 773
 774         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 775                          btusb_intr_complete, hdev, data->intr_ep->bInterval);
 776
 777         urb->transfer_flags |= URB_FREE_BUFFER;
 778
 779         usb_anchor_urb(urb, &data->intr_anchor);
 780
 781         err = usb_submit_urb(urb, mem_flags);
 782         if (err < 0) {
 783                 if (err != -EPERM && err != -ENODEV)
 784                         bt_dev_err(hdev, "urb %p submission failed (%d)",
 785                                    urb, -err);
 786                 usb_unanchor_urb(urb);
 787         }
 788
 789         usb_free_urb(urb);
 790
 791         return err;
 792 }
 793
 794 static void btusb_bulk_complete(struct urb *urb)
 795 {
 796         struct hci_dev *hdev = urb->context;
 797         struct btusb_data *data = hci_get_drvdata(hdev);
 798         int err;
 799
 800         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 801                urb->actual_length);
 802
 803         if (!test_bit(HCI_RUNNING, &hdev->flags))
 804                 return;
 805
 806         if (urb->status == 0) {
 807                 hdev->stat.byte_rx += urb->actual_length;
 808
 809                 if (data->recv_bulk(data, urb->transfer_buffer,
 810                                     urb->actual_length) < 0) {
 811                         bt_dev_err(hdev, "corrupted ACL packet");
 812                         hdev->stat.err_rx++;
 813                 }
 814         } else if (urb->status == -ENOENT) {
 815                 /* Avoid suspend failed when usb_kill_urb */
 816                 return;
 817         }
 818
 819         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 820                 return;
 821
 822         usb_anchor_urb(urb, &data->bulk_anchor);
 823         usb_mark_last_busy(data->udev);
 824
 825         err = usb_submit_urb(urb, GFP_ATOMIC);
 826         if (err < 0) {
 827                 /* -EPERM: urb is being killed;
 828                  * -ENODEV: device got disconnected
 829                  */
 830                 if (err != -EPERM && err != -ENODEV)
 831                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
 832                                    urb, -err);
 833                 usb_unanchor_urb(urb);
 834         }
 835 }
 836
 837 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 838 {
 839         struct btusb_data *data = hci_get_drvdata(hdev);
 840         struct urb *urb;
 841         unsigned char *buf;
 842         unsigned int pipe;
 843         int err, size = HCI_MAX_FRAME_SIZE;
 844
 845         BT_DBG("%s", hdev->name);
 846
 847         if (!data->bulk_rx_ep)
 848                 return -ENODEV;
 849
 850         urb = usb_alloc_urb(0, mem_flags);
 851         if (!urb)
 852                 return -ENOMEM;
 853
 854         buf = kmalloc(size, mem_flags);
 855         if (!buf) {
 856                 usb_free_urb(urb);
 857                 return -ENOMEM;
 858         }
 859
 860         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 861
 862         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
 863                           btusb_bulk_complete, hdev);
 864
 865         urb->transfer_flags |= URB_FREE_BUFFER;
 866
 867         usb_mark_last_busy(data->udev);
 868         usb_anchor_urb(urb, &data->bulk_anchor);
 869
 870         err = usb_submit_urb(urb, mem_flags);
 871         if (err < 0) {
 872                 if (err != -EPERM && err != -ENODEV)
 873                         bt_dev_err(hdev, "urb %p submission failed (%d)",
 874                                    urb, -err);
 875                 usb_unanchor_urb(urb);
 876         }
 877
 878         usb_free_urb(urb);
 879
 880         return err;
 881 }
 882
 883 static void btusb_isoc_complete(struct urb *urb)
 884 {
 885         struct hci_dev *hdev = urb->context;
 886         struct btusb_data *data = hci_get_drvdata(hdev);
 887         int i, err;
 888
 889         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
 890                urb->actual_length);
 891
 892         if (!test_bit(HCI_RUNNING, &hdev->flags))
 893                 return;
 894
 895         if (urb->status == 0) {
 896                 for (i = 0; i < urb->number_of_packets; i++) {
 897                         unsigned int offset = urb->iso_frame_desc[i].offset;
 898                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 899
 900                         if (urb->iso_frame_desc[i].status)
 901                                 continue;
 902
 903                         hdev->stat.byte_rx += length;
 904
 905                         if (btusb_recv_isoc(data, urb->transfer_buffer + offset,
 906                                             length) < 0) {
 907                                 bt_dev_err(hdev, "corrupted SCO packet");
 908                                 hdev->stat.err_rx++;
 909                         }
 910                 }
 911         } else if (urb->status == -ENOENT) {
 912                 /* Avoid suspend failed when usb_kill_urb */
 913                 return;
 914         }
 915
 916         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 917                 return;
 918
 919         usb_anchor_urb(urb, &data->isoc_anchor);
 920
 921         err = usb_submit_urb(urb, GFP_ATOMIC);
 922         if (err < 0) {
 923                 /* -EPERM: urb is being killed;
 924                  * -ENODEV: device got disconnected
 925                  */
 926                 if (err != -EPERM && err != -ENODEV)
 927                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
 928                                    urb, -err);
 929                 usb_unanchor_urb(urb);
 930         }
 931 }
 932
 933 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 934 {
 935         int i, offset = 0;
 936
 937         BT_DBG("len %d mtu %d", len, mtu);
 938
 939         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 940                                         i++, offset += mtu, len -= mtu) {
 941                 urb->iso_frame_desc[i].offset = offset;
 942                 urb->iso_frame_desc[i].length = mtu;
 943         }
 944
 945         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 946                 urb->iso_frame_desc[i].offset = offset;
 947                 urb->iso_frame_desc[i].length = len;
 948                 i++;
 949         }
 950
 951         urb->number_of_packets = i;
 952 }
 953
 954 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 955 {
 956         struct btusb_data *data = hci_get_drvdata(hdev);
 957         struct urb *urb;
 958         unsigned char *buf;
 959         unsigned int pipe;
 960         int err, size;
 961
 962         BT_DBG("%s", hdev->name);
 963
 964         if (!data->isoc_rx_ep)
 965                 return -ENODEV;
 966
 967         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 968         if (!urb)
 969                 return -ENOMEM;
 970
 971         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 972                                                 BTUSB_MAX_ISOC_FRAMES;
 973
 974         buf = kmalloc(size, mem_flags);
 975         if (!buf) {
 976                 usb_free_urb(urb);
 977                 return -ENOMEM;
 978         }
 979
 980         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 981
 982         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 983                          hdev, data->isoc_rx_ep->bInterval);
 984
 985         urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP;
 986
 987         __fill_isoc_descriptor(urb, size,
 988                                le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 989
 990         usb_anchor_urb(urb, &data->isoc_anchor);
 991
 992         err = usb_submit_urb(urb, mem_flags);
 993         if (err < 0) {
 994                 if (err != -EPERM && err != -ENODEV)
 995                         bt_dev_err(hdev, "urb %p submission failed (%d)",
 996                                    urb, -err);
 997                 usb_unanchor_urb(urb);
 998         }
 999
1000         usb_free_urb(urb);
1001
1002         return err;
1003 }
1004
1005 static void btusb_diag_complete(struct urb *urb)
1006 {
1007         struct hci_dev *hdev = urb->context;
1008         struct btusb_data *data = hci_get_drvdata(hdev);
1009         int err;
1010
1011         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1012                urb->actual_length);
1013
1014         if (urb->status == 0) {
1015                 struct sk_buff *skb;
1016
1017                 skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC);
1018                 if (skb) {
1019                         skb_put_data(skb, urb->transfer_buffer,
1020                                      urb->actual_length);
1021                         hci_recv_diag(hdev, skb);
1022                 }
1023         } else if (urb->status == -ENOENT) {
1024                 /* Avoid suspend failed when usb_kill_urb */
1025                 return;
1026         }
1027
1028         if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags))
1029                 return;
1030
1031         usb_anchor_urb(urb, &data->diag_anchor);
1032         usb_mark_last_busy(data->udev);
1033
1034         err = usb_submit_urb(urb, GFP_ATOMIC);
1035         if (err < 0) {
1036                 /* -EPERM: urb is being killed;
1037                  * -ENODEV: device got disconnected
1038                  */
1039                 if (err != -EPERM && err != -ENODEV)
1040                         bt_dev_err(hdev, "urb %p failed to resubmit (%d)",
1041                                    urb, -err);
1042                 usb_unanchor_urb(urb);
1043         }
1044 }
1045
1046 static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags)
1047 {
1048         struct btusb_data *data = hci_get_drvdata(hdev);
1049         struct urb *urb;
1050         unsigned char *buf;
1051         unsigned int pipe;
1052         int err, size = HCI_MAX_FRAME_SIZE;
1053
1054         BT_DBG("%s", hdev->name);
1055
1056         if (!data->diag_rx_ep)
1057                 return -ENODEV;
1058
1059         urb = usb_alloc_urb(0, mem_flags);
1060         if (!urb)
1061                 return -ENOMEM;
1062
1063         buf = kmalloc(size, mem_flags);
1064         if (!buf) {
1065                 usb_free_urb(urb);
1066                 return -ENOMEM;
1067         }
1068
1069         pipe = usb_rcvbulkpipe(data->udev, data->diag_rx_ep->bEndpointAddress);
1070
1071         usb_fill_bulk_urb(urb, data->udev, pipe, buf, size,
1072                           btusb_diag_complete, hdev);
1073
1074         urb->transfer_flags |= URB_FREE_BUFFER;
1075
1076         usb_mark_last_busy(data->udev);
1077         usb_anchor_urb(urb, &data->diag_anchor);
1078
1079         err = usb_submit_urb(urb, mem_flags);
1080         if (err < 0) {
1081                 if (err != -EPERM && err != -ENODEV)
1082                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1083                                    urb, -err);
1084                 usb_unanchor_urb(urb);
1085         }
1086
1087         usb_free_urb(urb);
1088
1089         return err;
1090 }
1091
1092 static void btusb_tx_complete(struct urb *urb)
1093 {
1094         struct sk_buff *skb = urb->context;
1095         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1096         struct btusb_data *data = hci_get_drvdata(hdev);
1097         unsigned long flags;
1098
1099         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1100                urb->actual_length);
1101
1102         if (!test_bit(HCI_RUNNING, &hdev->flags))
1103                 goto done;
1104
1105         if (!urb->status)
1106                 hdev->stat.byte_tx += urb->transfer_buffer_length;
1107         else
1108                 hdev->stat.err_tx++;
1109
1110 done:
1111         spin_lock_irqsave(&data->txlock, flags);
1112         data->tx_in_flight--;
1113         spin_unlock_irqrestore(&data->txlock, flags);
1114
1115         kfree(urb->setup_packet);
1116
1117         kfree_skb(skb);
1118 }
1119
1120 static void btusb_isoc_tx_complete(struct urb *urb)
1121 {
1122         struct sk_buff *skb = urb->context;
1123         struct hci_dev *hdev = (struct hci_dev *)skb->dev;
1124
1125         BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status,
1126                urb->actual_length);
1127
1128         if (!test_bit(HCI_RUNNING, &hdev->flags))
1129                 goto done;
1130
1131         if (!urb->status)
1132                 hdev->stat.byte_tx += urb->transfer_buffer_length;
1133         else
1134                 hdev->stat.err_tx++;
1135
1136 done:
1137         kfree(urb->setup_packet);
1138
1139         kfree_skb(skb);
1140 }
1141
1142 static int btusb_open(struct hci_dev *hdev)
1143 {
1144         struct btusb_data *data = hci_get_drvdata(hdev);
1145         int err;
1146
1147         BT_DBG("%s", hdev->name);
1148
1149         err = usb_autopm_get_interface(data->intf);
1150         if (err < 0)
1151                 return err;
1152
1153         /* Patching USB firmware files prior to starting any URBs of HCI path
1154          * It is more safe to use USB bulk channel for downloading USB patch
1155          */
1156         if (data->setup_on_usb) {
1157                 err = data->setup_on_usb(hdev);
1158                 if (err < 0)
1159                         return err;
1160         }
1161
1162         data->intf->needs_remote_wakeup = 1;
1163         /* device specific wakeup source enabled and required for USB
1164          * remote wakeup while host is suspended
1165          */
1166         device_wakeup_enable(&data->udev->dev);
1167
1168         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
1169                 goto done;
1170
1171         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
1172         if (err < 0)
1173                 goto failed;
1174
1175         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1176         if (err < 0) {
1177                 usb_kill_anchored_urbs(&data->intr_anchor);
1178                 goto failed;
1179         }
1180
1181         set_bit(BTUSB_BULK_RUNNING, &data->flags);
1182         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
1183
1184         if (data->diag) {
1185                 if (!btusb_submit_diag_urb(hdev, GFP_KERNEL))
1186                         set_bit(BTUSB_DIAG_RUNNING, &data->flags);
1187         }
1188
1189 done:
1190         usb_autopm_put_interface(data->intf);
1191         return 0;
1192
1193 failed:
1194         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1195         usb_autopm_put_interface(data->intf);
1196         return err;
1197 }
1198
1199 static void btusb_stop_traffic(struct btusb_data *data)
1200 {
1201         usb_kill_anchored_urbs(&data->intr_anchor);
1202         usb_kill_anchored_urbs(&data->bulk_anchor);
1203         usb_kill_anchored_urbs(&data->isoc_anchor);
1204         usb_kill_anchored_urbs(&data->diag_anchor);
1205 }
1206
1207 static int btusb_close(struct hci_dev *hdev)
1208 {
1209         struct btusb_data *data = hci_get_drvdata(hdev);
1210         int err;
1211
1212         BT_DBG("%s", hdev->name);
1213
1214         cancel_work_sync(&data->work);
1215         cancel_work_sync(&data->waker);
1216
1217         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1218         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1219         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1220         clear_bit(BTUSB_DIAG_RUNNING, &data->flags);
1221
1222         btusb_stop_traffic(data);
1223         btusb_free_frags(data);
1224
1225         err = usb_autopm_get_interface(data->intf);
1226         if (err < 0)
1227                 goto failed;
1228
1229         data->intf->needs_remote_wakeup = 0;
1230         device_wakeup_disable(&data->udev->dev);
1231         usb_autopm_put_interface(data->intf);
1232
1233 failed:
1234         usb_scuttle_anchored_urbs(&data->deferred);
1235         return 0;
1236 }
1237
1238 static int btusb_flush(struct hci_dev *hdev)
1239 {
1240         struct btusb_data *data = hci_get_drvdata(hdev);
1241
1242         BT_DBG("%s", hdev->name);
1243
1244         usb_kill_anchored_urbs(&data->tx_anchor);
1245         btusb_free_frags(data);
1246
1247         return 0;
1248 }
1249
1250 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb)
1251 {
1252         struct btusb_data *data = hci_get_drvdata(hdev);
1253         struct usb_ctrlrequest *dr;
1254         struct urb *urb;
1255         unsigned int pipe;
1256
1257         urb = usb_alloc_urb(0, GFP_KERNEL);
1258         if (!urb)
1259                 return ERR_PTR(-ENOMEM);
1260
1261         dr = kmalloc(sizeof(*dr), GFP_KERNEL);
1262         if (!dr) {
1263                 usb_free_urb(urb);
1264                 return ERR_PTR(-ENOMEM);
1265         }
1266
1267         dr->bRequestType = data->cmdreq_type;
1268         dr->bRequest     = data->cmdreq;
1269         dr->wIndex       = 0;
1270         dr->wValue       = 0;
1271         dr->wLength      = __cpu_to_le16(skb->len);
1272
1273         pipe = usb_sndctrlpipe(data->udev, 0x00);
1274
1275         usb_fill_control_urb(urb, data->udev, pipe, (void *)dr,
1276                              skb->data, skb->len, btusb_tx_complete, skb);
1277
1278         skb->dev = (void *)hdev;
1279
1280         return urb;
1281 }
1282
1283 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb)
1284 {
1285         struct btusb_data *data = hci_get_drvdata(hdev);
1286         struct urb *urb;
1287         unsigned int pipe;
1288
1289         if (!data->bulk_tx_ep)
1290                 return ERR_PTR(-ENODEV);
1291
1292         urb = usb_alloc_urb(0, GFP_KERNEL);
1293         if (!urb)
1294                 return ERR_PTR(-ENOMEM);
1295
1296         pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress);
1297
1298         usb_fill_bulk_urb(urb, data->udev, pipe,
1299                           skb->data, skb->len, btusb_tx_complete, skb);
1300
1301         skb->dev = (void *)hdev;
1302
1303         return urb;
1304 }
1305
1306 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb)
1307 {
1308         struct btusb_data *data = hci_get_drvdata(hdev);
1309         struct urb *urb;
1310         unsigned int pipe;
1311
1312         if (!data->isoc_tx_ep)
1313                 return ERR_PTR(-ENODEV);
1314
1315         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL);
1316         if (!urb)
1317                 return ERR_PTR(-ENOMEM);
1318
1319         pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress);
1320
1321         usb_fill_int_urb(urb, data->udev, pipe,
1322                          skb->data, skb->len, btusb_isoc_tx_complete,
1323                          skb, data->isoc_tx_ep->bInterval);
1324
1325         urb->transfer_flags  = URB_ISO_ASAP;
1326
1327         __fill_isoc_descriptor(urb, skb->len,
1328                                le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
1329
1330         skb->dev = (void *)hdev;
1331
1332         return urb;
1333 }
1334
1335 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb)
1336 {
1337         struct btusb_data *data = hci_get_drvdata(hdev);
1338         int err;
1339
1340         usb_anchor_urb(urb, &data->tx_anchor);
1341
1342         err = usb_submit_urb(urb, GFP_KERNEL);
1343         if (err < 0) {
1344                 if (err != -EPERM && err != -ENODEV)
1345                         bt_dev_err(hdev, "urb %p submission failed (%d)",
1346                                    urb, -err);
1347                 kfree(urb->setup_packet);
1348                 usb_unanchor_urb(urb);
1349         } else {
1350                 usb_mark_last_busy(data->udev);
1351         }
1352
1353         usb_free_urb(urb);
1354         return err;
1355 }
1356
1357 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb)
1358 {
1359         struct btusb_data *data = hci_get_drvdata(hdev);
1360         unsigned long flags;
1361         bool suspending;
1362
1363         spin_lock_irqsave(&data->txlock, flags);
1364         suspending = test_bit(BTUSB_SUSPENDING, &data->flags);
1365         if (!suspending)
1366                 data->tx_in_flight++;
1367         spin_unlock_irqrestore(&data->txlock, flags);
1368
1369         if (!suspending)
1370                 return submit_tx_urb(hdev, urb);
1371
1372         usb_anchor_urb(urb, &data->deferred);
1373         schedule_work(&data->waker);
1374
1375         usb_free_urb(urb);
1376         return 0;
1377 }
1378
1379 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
1380 {
1381         struct urb *urb;
1382
1383         BT_DBG("%s", hdev->name);
1384
1385         switch (hci_skb_pkt_type(skb)) {
1386         case HCI_COMMAND_PKT:
1387                 urb = alloc_ctrl_urb(hdev, skb);
1388                 if (IS_ERR(urb))
1389                         return PTR_ERR(urb);
1390
1391                 hdev->stat.cmd_tx++;
1392                 return submit_or_queue_tx_urb(hdev, urb);
1393
1394         case HCI_ACLDATA_PKT:
1395                 urb = alloc_bulk_urb(hdev, skb);
1396                 if (IS_ERR(urb))
1397                         return PTR_ERR(urb);
1398
1399                 hdev->stat.acl_tx++;
1400                 return submit_or_queue_tx_urb(hdev, urb);
1401
1402         case HCI_SCODATA_PKT:
1403                 if (hci_conn_num(hdev, SCO_LINK) < 1)
1404                         return -ENODEV;
1405
1406                 urb = alloc_isoc_urb(hdev, skb);
1407                 if (IS_ERR(urb))
1408                         return PTR_ERR(urb);
1409
1410                 hdev->stat.sco_tx++;
1411                 return submit_tx_urb(hdev, urb);
1412         }
1413
1414         return -EILSEQ;
1415 }
1416
1417 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
1418 {
1419         struct btusb_data *data = hci_get_drvdata(hdev);
1420
1421         BT_DBG("%s evt %d", hdev->name, evt);
1422
1423         if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) {
1424                 data->sco_num = hci_conn_num(hdev, SCO_LINK);
1425                 schedule_work(&data->work);
1426         }
1427 }
1428
1429 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
1430 {
1431         struct btusb_data *data = hci_get_drvdata(hdev);
1432         struct usb_interface *intf = data->isoc;
1433         struct usb_endpoint_descriptor *ep_desc;
1434         int i, err;
1435
1436         if (!data->isoc)
1437                 return -ENODEV;
1438
1439         err = usb_set_interface(data->udev, data->isoc_ifnum, altsetting);
1440         if (err < 0) {
1441                 bt_dev_err(hdev, "setting interface failed (%d)", -err);
1442                 return err;
1443         }
1444
1445         data->isoc_altsetting = altsetting;
1446
1447         data->isoc_tx_ep = NULL;
1448         data->isoc_rx_ep = NULL;
1449
1450         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1451                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1452
1453                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
1454                         data->isoc_tx_ep = ep_desc;
1455                         continue;
1456                 }
1457
1458                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
1459                         data->isoc_rx_ep = ep_desc;
1460                         continue;
1461                 }
1462         }
1463
1464         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
1465                 bt_dev_err(hdev, "invalid SCO descriptors");
1466                 return -ENODEV;
1467         }
1468
1469         return 0;
1470 }
1471
1472 static void btusb_work(struct work_struct *work)
1473 {
1474         struct btusb_data *data = container_of(work, struct btusb_data, work);
1475         struct hci_dev *hdev = data->hdev;
1476         int new_alts;
1477         int err;
1478
1479         if (data->sco_num > 0) {
1480                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
1481                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
1482                         if (err < 0) {
1483                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1484                                 usb_kill_anchored_urbs(&data->isoc_anchor);
1485                                 return;
1486                         }
1487
1488                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
1489                 }
1490
1491                 if (hdev->voice_setting & 0x0020) {
1492                         static const int alts[3] = { 2, 4, 5 };
1493
1494                         new_alts = alts[data->sco_num - 1];
1495                 } else {
1496                         new_alts = data->sco_num;
1497                 }
1498
1499                 if (data->isoc_altsetting != new_alts) {
1500                         unsigned long flags;
1501
1502                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1503                         usb_kill_anchored_urbs(&data->isoc_anchor);
1504
1505                         /* When isochronous alternate setting needs to be
1506                          * changed, because SCO connection has been added
1507                          * or removed, a packet fragment may be left in the
1508                          * reassembling state. This could lead to wrongly
1509                          * assembled fragments.
1510                          *
1511                          * Clear outstanding fragment when selecting a new
1512                          * alternate setting.
1513                          */
1514                         spin_lock_irqsave(&data->rxlock, flags);
1515                         kfree_skb(data->sco_skb);
1516                         data->sco_skb = NULL;
1517                         spin_unlock_irqrestore(&data->rxlock, flags);
1518
1519                         if (__set_isoc_interface(hdev, new_alts) < 0)
1520                                 return;
1521                 }
1522
1523                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1524                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
1525                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1526                         else
1527                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
1528                 }
1529         } else {
1530                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1531                 usb_kill_anchored_urbs(&data->isoc_anchor);
1532
1533                 __set_isoc_interface(hdev, 0);
1534                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
1535                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
1536         }
1537 }
1538
1539 static void btusb_waker(struct work_struct *work)
1540 {
1541         struct btusb_data *data = container_of(work, struct btusb_data, waker);
1542         int err;
1543
1544         err = usb_autopm_get_interface(data->intf);
1545         if (err < 0)
1546                 return;
1547
1548         usb_autopm_put_interface(data->intf);
1549 }
1550
1551 static int btusb_setup_bcm92035(struct hci_dev *hdev)
1552 {
1553         struct sk_buff *skb;
1554         u8 val = 0x00;
1555
1556         BT_DBG("%s", hdev->name);
1557
1558         skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT);
1559         if (IS_ERR(skb))
1560                 bt_dev_err(hdev, "BCM92035 command failed (%ld)", PTR_ERR(skb));
1561         else
1562                 kfree_skb(skb);
1563
1564         return 0;
1565 }
1566
1567 static int btusb_setup_csr(struct hci_dev *hdev)
1568 {
1569         struct hci_rp_read_local_version *rp;
1570         struct sk_buff *skb;
1571
1572         BT_DBG("%s", hdev->name);
1573
1574         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
1575                              HCI_INIT_TIMEOUT);
1576         if (IS_ERR(skb)) {
1577                 int err = PTR_ERR(skb);
1578                 bt_dev_err(hdev, "CSR: Local version failed (%d)", err);
1579                 return err;
1580         }
1581
1582         if (skb->len != sizeof(struct hci_rp_read_local_version)) {
1583                 bt_dev_err(hdev, "CSR: Local version length mismatch");
1584                 kfree_skb(skb);
1585                 return -EIO;
1586         }
1587
1588         rp = (struct hci_rp_read_local_version *)skb->data;
1589
1590         /* Detect controllers which aren't real CSR ones. */
1591         if (le16_to_cpu(rp->manufacturer) != 10 ||
1592             le16_to_cpu(rp->lmp_subver) == 0x0c5c) {
1593                 /* Clear the reset quirk since this is not an actual
1594                  * early Bluetooth 1.1 device from CSR.
1595                  */
1596                 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
1597
1598                 /* These fake CSR controllers have all a broken
1599                  * stored link key handling and so just disable it.
1600                  */
1601                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
1602         }
1603
1604         kfree_skb(skb);
1605
1606         return 0;
1607 }
1608
1609 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev,
1610                                                        struct intel_version *ver)
1611 {
1612         const struct firmware *fw;
1613         char fwname[64];
1614         int ret;
1615
1616         snprintf(fwname, sizeof(fwname),
1617                  "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq",
1618                  ver->hw_platform, ver->hw_variant, ver->hw_revision,
1619                  ver->fw_variant,  ver->fw_revision, ver->fw_build_num,
1620                  ver->fw_build_ww, ver->fw_build_yy);
1621
1622         ret = request_firmware(&fw, fwname, &hdev->dev);
1623         if (ret < 0) {
1624                 if (ret == -EINVAL) {
1625                         bt_dev_err(hdev, "Intel firmware file request failed (%d)",
1626                                    ret);
1627                         return NULL;
1628                 }
1629
1630                 bt_dev_err(hdev, "failed to open Intel firmware file: %s (%d)",
1631                            fwname, ret);
1632
1633                 /* If the correct firmware patch file is not found, use the
1634                  * default firmware patch file instead
1635                  */
1636                 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq",
1637                          ver->hw_platform, ver->hw_variant);
1638                 if (request_firmware(&fw, fwname, &hdev->dev) < 0) {
1639                         bt_dev_err(hdev, "failed to open default fw file: %s",
1640                                    fwname);
1641                         return NULL;
1642                 }
1643         }
1644
1645         bt_dev_info(hdev, "Intel Bluetooth firmware file: %s", fwname);
1646
1647         return fw;
1648 }
1649
1650 static int btusb_setup_intel_patching(struct hci_dev *hdev,
1651                                       const struct firmware *fw,
1652                                       const u8 **fw_ptr, int *disable_patch)
1653 {
1654         struct sk_buff *skb;
1655         struct hci_command_hdr *cmd;
1656         const u8 *cmd_param;
1657         struct hci_event_hdr *evt = NULL;
1658         const u8 *evt_param = NULL;
1659         int remain = fw->size - (*fw_ptr - fw->data);
1660
1661         /* The first byte indicates the types of the patch command or event.
1662          * 0x01 means HCI command and 0x02 is HCI event. If the first bytes
1663          * in the current firmware buffer doesn't start with 0x01 or
1664          * the size of remain buffer is smaller than HCI command header,
1665          * the firmware file is corrupted and it should stop the patching
1666          * process.
1667          */
1668         if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) {
1669                 bt_dev_err(hdev, "Intel fw corrupted: invalid cmd read");
1670                 return -EINVAL;
1671         }
1672         (*fw_ptr)++;
1673         remain--;
1674
1675         cmd = (struct hci_command_hdr *)(*fw_ptr);
1676         *fw_ptr += sizeof(*cmd);
1677         remain -= sizeof(*cmd);
1678
1679         /* Ensure that the remain firmware data is long enough than the length
1680          * of command parameter. If not, the firmware file is corrupted.
1681          */
1682         if (remain < cmd->plen) {
1683                 bt_dev_err(hdev, "Intel fw corrupted: invalid cmd len");
1684                 return -EFAULT;
1685         }
1686
1687         /* If there is a command that loads a patch in the firmware
1688          * file, then enable the patch upon success, otherwise just
1689          * disable the manufacturer mode, for example patch activation
1690          * is not required when the default firmware patch file is used
1691          * because there are no patch data to load.
1692          */
1693         if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e)
1694                 *disable_patch = 0;
1695
1696         cmd_param = *fw_ptr;
1697         *fw_ptr += cmd->plen;
1698         remain -= cmd->plen;
1699
1700         /* This reads the expected events when the above command is sent to the
1701          * device. Some vendor commands expects more than one events, for
1702          * example command status event followed by vendor specific event.
1703          * For this case, it only keeps the last expected event. so the command
1704          * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of
1705          * last expected event.
1706          */
1707         while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) {
1708                 (*fw_ptr)++;
1709                 remain--;
1710
1711                 evt = (struct hci_event_hdr *)(*fw_ptr);
1712                 *fw_ptr += sizeof(*evt);
1713                 remain -= sizeof(*evt);
1714
1715                 if (remain < evt->plen) {
1716                         bt_dev_err(hdev, "Intel fw corrupted: invalid evt len");
1717                         return -EFAULT;
1718                 }
1719
1720                 evt_param = *fw_ptr;
1721                 *fw_ptr += evt->plen;
1722                 remain -= evt->plen;
1723         }
1724
1725         /* Every HCI commands in the firmware file has its correspond event.
1726          * If event is not found or remain is smaller than zero, the firmware
1727          * file is corrupted.
1728          */
1729         if (!evt || !evt_param || remain < 0) {
1730                 bt_dev_err(hdev, "Intel fw corrupted: invalid evt read");
1731                 return -EFAULT;
1732         }
1733
1734         skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen,
1735                                 cmd_param, evt->evt, HCI_INIT_TIMEOUT);
1736         if (IS_ERR(skb)) {
1737                 bt_dev_err(hdev, "sending Intel patch command (0x%4.4x) failed (%ld)",
1738                            cmd->opcode, PTR_ERR(skb));
1739                 return PTR_ERR(skb);
1740         }
1741
1742         /* It ensures that the returned event matches the event data read from
1743          * the firmware file. At fist, it checks the length and then
1744          * the contents of the event.
1745          */
1746         if (skb->len != evt->plen) {
1747                 bt_dev_err(hdev, "mismatch event length (opcode 0x%4.4x)",
1748                            le16_to_cpu(cmd->opcode));
1749                 kfree_skb(skb);
1750                 return -EFAULT;
1751         }
1752
1753         if (memcmp(skb->data, evt_param, evt->plen)) {
1754                 bt_dev_err(hdev, "mismatch event parameter (opcode 0x%4.4x)",
1755                            le16_to_cpu(cmd->opcode));
1756                 kfree_skb(skb);
1757                 return -EFAULT;
1758         }
1759         kfree_skb(skb);
1760
1761         return 0;
1762 }
1763
1764 static int btusb_setup_intel(struct hci_dev *hdev)
1765 {
1766         struct sk_buff *skb;
1767         const struct firmware *fw;
1768         const u8 *fw_ptr;
1769         int disable_patch, err;
1770         struct intel_version ver;
1771
1772         BT_DBG("%s", hdev->name);
1773
1774         /* The controller has a bug with the first HCI command sent to it
1775          * returning number of completed commands as zero. This would stall the
1776          * command processing in the Bluetooth core.
1777          *
1778          * As a workaround, send HCI Reset command first which will reset the
1779          * number of completed commands and allow normal command processing
1780          * from now on.
1781          */
1782         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1783         if (IS_ERR(skb)) {
1784                 bt_dev_err(hdev, "sending initial HCI reset command failed (%ld)",
1785                            PTR_ERR(skb));
1786                 return PTR_ERR(skb);
1787         }
1788         kfree_skb(skb);
1789
1790         /* Read Intel specific controller version first to allow selection of
1791          * which firmware file to load.
1792          *
1793          * The returned information are hardware variant and revision plus
1794          * firmware variant, revision and build number.
1795          */
1796         err = btintel_read_version(hdev, &ver);
1797         if (err)
1798                 return err;
1799
1800         bt_dev_info(hdev, "read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x",
1801                     ver.hw_platform, ver.hw_variant, ver.hw_revision,
1802                     ver.fw_variant,  ver.fw_revision, ver.fw_build_num,
1803                     ver.fw_build_ww, ver.fw_build_yy, ver.fw_patch_num);
1804
1805         /* fw_patch_num indicates the version of patch the device currently
1806          * have. If there is no patch data in the device, it is always 0x00.
1807          * So, if it is other than 0x00, no need to patch the device again.
1808          */
1809         if (ver.fw_patch_num) {
1810                 bt_dev_info(hdev, "Intel device is already patched. "
1811                             "patch num: %02x", ver.fw_patch_num);
1812                 goto complete;
1813         }
1814
1815         /* Opens the firmware patch file based on the firmware version read
1816          * from the controller. If it fails to open the matching firmware
1817          * patch file, it tries to open the default firmware patch file.
1818          * If no patch file is found, allow the device to operate without
1819          * a patch.
1820          */
1821         fw = btusb_setup_intel_get_fw(hdev, &ver);
1822         if (!fw)
1823                 goto complete;
1824         fw_ptr = fw->data;
1825
1826         /* Enable the manufacturer mode of the controller.
1827          * Only while this mode is enabled, the driver can download the
1828          * firmware patch data and configuration parameters.
1829          */
1830         err = btintel_enter_mfg(hdev);
1831         if (err) {
1832                 release_firmware(fw);
1833                 return err;
1834         }
1835
1836         disable_patch = 1;
1837
1838         /* The firmware data file consists of list of Intel specific HCI
1839          * commands and its expected events. The first byte indicates the
1840          * type of the message, either HCI command or HCI event.
1841          *
1842          * It reads the command and its expected event from the firmware file,
1843          * and send to the controller. Once __hci_cmd_sync_ev() returns,
1844          * the returned event is compared with the event read from the firmware
1845          * file and it will continue until all the messages are downloaded to
1846          * the controller.
1847          *
1848          * Once the firmware patching is completed successfully,
1849          * the manufacturer mode is disabled with reset and activating the
1850          * downloaded patch.
1851          *
1852          * If the firmware patching fails, the manufacturer mode is
1853          * disabled with reset and deactivating the patch.
1854          *
1855          * If the default patch file is used, no reset is done when disabling
1856          * the manufacturer.
1857          */
1858         while (fw->size > fw_ptr - fw->data) {
1859                 int ret;
1860
1861                 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr,
1862                                                  &disable_patch);
1863                 if (ret < 0)
1864                         goto exit_mfg_deactivate;
1865         }
1866
1867         release_firmware(fw);
1868
1869         if (disable_patch)
1870                 goto exit_mfg_disable;
1871
1872         /* Patching completed successfully and disable the manufacturer mode
1873          * with reset and activate the downloaded firmware patches.
1874          */
1875         err = btintel_exit_mfg(hdev, true, true);
1876         if (err)
1877                 return err;
1878
1879         bt_dev_info(hdev, "Intel firmware patch completed and activated");
1880
1881         goto complete;
1882
1883 exit_mfg_disable:
1884         /* Disable the manufacturer mode without reset */
1885         err = btintel_exit_mfg(hdev, false, false);
1886         if (err)
1887                 return err;
1888
1889         bt_dev_info(hdev, "Intel firmware patch completed");
1890
1891         goto complete;
1892
1893 exit_mfg_deactivate:
1894         release_firmware(fw);
1895
1896         /* Patching failed. Disable the manufacturer mode with reset and
1897          * deactivate the downloaded firmware patches.
1898          */
1899         err = btintel_exit_mfg(hdev, true, false);
1900         if (err)
1901                 return err;
1902
1903         bt_dev_info(hdev, "Intel firmware patch completed and deactivated");
1904
1905 complete:
1906         /* Set the event mask for Intel specific vendor events. This enables
1907          * a few extra events that are useful during general operation.
1908          */
1909         btintel_set_event_mask_mfg(hdev, false);
1910
1911         btintel_check_bdaddr(hdev);
1912         return 0;
1913 }
1914
1915 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode)
1916 {
1917         struct sk_buff *skb;
1918         struct hci_event_hdr *hdr;
1919         struct hci_ev_cmd_complete *evt;
1920
1921         skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_KERNEL);
1922         if (!skb)
1923                 return -ENOMEM;
1924
1925         hdr = skb_put(skb, sizeof(*hdr));
1926         hdr->evt = HCI_EV_CMD_COMPLETE;
1927         hdr->plen = sizeof(*evt) + 1;
1928
1929         evt = skb_put(skb, sizeof(*evt));
1930         evt->ncmd = 0x01;
1931         evt->opcode = cpu_to_le16(opcode);
1932
1933         skb_put_u8(skb, 0x00);
1934
1935         hci_skb_pkt_type(skb) = HCI_EVENT_PKT;
1936
1937         return hci_recv_frame(hdev, skb);
1938 }
1939
1940 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer,
1941                                  int count)
1942 {
1943         /* When the device is in bootloader mode, then it can send
1944          * events via the bulk endpoint. These events are treated the
1945          * same way as the ones received from the interrupt endpoint.
1946          */
1947         if (test_bit(BTUSB_BOOTLOADER, &data->flags))
1948                 return btusb_recv_intr(data, buffer, count);
1949
1950         return btusb_recv_bulk(data, buffer, count);
1951 }
1952
1953 static void btusb_intel_bootup(struct btusb_data *data, const void *ptr,
1954                                unsigned int len)
1955 {
1956         const struct intel_bootup *evt = ptr;
1957
1958         if (len != sizeof(*evt))
1959                 return;
1960
1961         if (test_and_clear_bit(BTUSB_BOOTING, &data->flags))
1962                 wake_up_bit(&data->flags, BTUSB_BOOTING);
1963 }
1964
1965 static void btusb_intel_secure_send_result(struct btusb_data *data,
1966                                            const void *ptr, unsigned int len)
1967 {
1968         const struct intel_secure_send_result *evt = ptr;
1969
1970         if (len != sizeof(*evt))
1971                 return;
1972
1973         if (evt->result)
1974                 set_bit(BTUSB_FIRMWARE_FAILED, &data->flags);
1975
1976         if (test_and_clear_bit(BTUSB_DOWNLOADING, &data->flags) &&
1977             test_bit(BTUSB_FIRMWARE_LOADED, &data->flags))
1978                 wake_up_bit(&data->flags, BTUSB_DOWNLOADING);
1979 }
1980
1981 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb)
1982 {
1983         struct btusb_data *data = hci_get_drvdata(hdev);
1984
1985         if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
1986                 struct hci_event_hdr *hdr = (void *)skb->data;
1987
1988                 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff &&
1989                     hdr->plen > 0) {
1990                         const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1;
1991                         unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1;
1992
1993                         switch (skb->data[2]) {
1994                         case 0x02:
1995                                 /* When switching to the operational firmware
1996                                  * the device sends a vendor specific event
1997                                  * indicating that the bootup completed.
1998                                  */
1999                                 btusb_intel_bootup(data, ptr, len);
2000                                 break;
2001                         case 0x06:
2002                                 /* When the firmware loading completes the
2003                                  * device sends out a vendor specific event
2004                                  * indicating the result of the firmware
2005                                  * loading.
2006                                  */
2007                                 btusb_intel_secure_send_result(data, ptr, len);
2008                                 break;
2009                         }
2010                 }
2011         }
2012
2013         return hci_recv_frame(hdev, skb);
2014 }
2015
2016 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb)
2017 {
2018         struct btusb_data *data = hci_get_drvdata(hdev);
2019         struct urb *urb;
2020
2021         BT_DBG("%s", hdev->name);
2022
2023         switch (hci_skb_pkt_type(skb)) {
2024         case HCI_COMMAND_PKT:
2025                 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) {
2026                         struct hci_command_hdr *cmd = (void *)skb->data;
2027                         __u16 opcode = le16_to_cpu(cmd->opcode);
2028
2029                         /* When in bootloader mode and the command 0xfc09
2030                          * is received, it needs to be send down the
2031                          * bulk endpoint. So allocate a bulk URB instead.
2032                          */
2033                         if (opcode == 0xfc09)
2034                                 urb = alloc_bulk_urb(hdev, skb);
2035                         else
2036                                 urb = alloc_ctrl_urb(hdev, skb);
2037
2038                         /* When the 0xfc01 command is issued to boot into
2039                          * the operational firmware, it will actually not
2040                          * send a command complete event. To keep the flow
2041                          * control working inject that event here.
2042                          */
2043                         if (opcode == 0xfc01)
2044                                 inject_cmd_complete(hdev, opcode);
2045                 } else {
2046                         urb = alloc_ctrl_urb(hdev, skb);
2047                 }
2048                 if (IS_ERR(urb))
2049                         return PTR_ERR(urb);
2050
2051                 hdev->stat.cmd_tx++;
2052                 return submit_or_queue_tx_urb(hdev, urb);
2053
2054         case HCI_ACLDATA_PKT:
2055                 urb = alloc_bulk_urb(hdev, skb);
2056                 if (IS_ERR(urb))
2057                         return PTR_ERR(urb);
2058
2059                 hdev->stat.acl_tx++;
2060                 return submit_or_queue_tx_urb(hdev, urb);
2061
2062         case HCI_SCODATA_PKT:
2063                 if (hci_conn_num(hdev, SCO_LINK) < 1)
2064                         return -ENODEV;
2065
2066                 urb = alloc_isoc_urb(hdev, skb);
2067                 if (IS_ERR(urb))
2068                         return PTR_ERR(urb);
2069
2070                 hdev->stat.sco_tx++;
2071                 return submit_tx_urb(hdev, urb);
2072         }
2073
2074         return -EILSEQ;
2075 }
2076
2077 static bool btusb_setup_intel_new_get_fw_name(struct intel_version *ver,
2078                                              struct intel_boot_params *params,
2079                                              char *fw_name, size_t len,
2080                                              const char *suffix)
2081 {
2082         switch (ver->hw_variant) {
2083         case 0x0b:      /* SfP */
2084         case 0x0c:      /* WsP */
2085                 snprintf(fw_name, len, "intel/ibt-%u-%u.%s",
2086                         le16_to_cpu(ver->hw_variant),
2087                         le16_to_cpu(params->dev_revid),
2088                         suffix);
2089                 break;
2090         case 0x11:      /* JfP */
2091         case 0x12:      /* ThP */
2092         case 0x13:      /* HrP */
2093         case 0x14:      /* CcP */
2094                 snprintf(fw_name, len, "intel/ibt-%u-%u-%u.%s",
2095                         le16_to_cpu(ver->hw_variant),
2096                         le16_to_cpu(ver->hw_revision),
2097                         le16_to_cpu(ver->fw_revision),
2098                         suffix);
2099                 break;
2100         default:
2101                 return false;
2102         }
2103         return true;
2104 }
2105
2106 static int btusb_setup_intel_new(struct hci_dev *hdev)
2107 {
2108         struct btusb_data *data = hci_get_drvdata(hdev);
2109         struct intel_version ver;
2110         struct intel_boot_params params;
2111         const struct firmware *fw;
2112         u32 boot_param;
2113         char fwname[64];
2114         ktime_t calltime, delta, rettime;
2115         unsigned long long duration;
2116         int err;
2117
2118         BT_DBG("%s", hdev->name);
2119
2120         /* Set the default boot parameter to 0x0 and it is updated to
2121          * SKU specific boot parameter after reading Intel_Write_Boot_Params
2122          * command while downloading the firmware.
2123          */
2124         boot_param = 0x00000000;
2125
2126         calltime = ktime_get();
2127
2128         /* Read the Intel version information to determine if the device
2129          * is in bootloader mode or if it already has operational firmware
2130          * loaded.
2131          */
2132         err = btintel_read_version(hdev, &ver);
2133         if (err)
2134                 return err;
2135
2136         /* The hardware platform number has a fixed value of 0x37 and
2137          * for now only accept this single value.
2138          */
2139         if (ver.hw_platform != 0x37) {
2140                 bt_dev_err(hdev, "Unsupported Intel hardware platform (%u)",
2141                            ver.hw_platform);
2142                 return -EINVAL;
2143         }
2144
2145         /* Check for supported iBT hardware variants of this firmware
2146          * loading method.
2147          *
2148          * This check has been put in place to ensure correct forward
2149          * compatibility options when newer hardware variants come along.
2150          */
2151         switch (ver.hw_variant) {
2152         case 0x0b:      /* SfP */
2153         case 0x0c:      /* WsP */
2154         case 0x11:      /* JfP */
2155         case 0x12:      /* ThP */
2156         case 0x13:      /* HrP */
2157         case 0x14:      /* CcP */
2158                 break;
2159         default:
2160                 bt_dev_err(hdev, "Unsupported Intel hardware variant (%u)",
2161                            ver.hw_variant);
2162                 return -EINVAL;
2163         }
2164
2165         btintel_version_info(hdev, &ver);
2166
2167         /* The firmware variant determines if the device is in bootloader
2168          * mode or is running operational firmware. The value 0x06 identifies
2169          * the bootloader and the value 0x23 identifies the operational
2170          * firmware.
2171          *
2172          * When the operational firmware is already present, then only
2173          * the check for valid Bluetooth device address is needed. This
2174          * determines if the device will be added as configured or
2175          * unconfigured controller.
2176          *
2177          * It is not possible to use the Secure Boot Parameters in this
2178          * case since that command is only available in bootloader mode.
2179          */
2180         if (ver.fw_variant == 0x23) {
2181                 clear_bit(BTUSB_BOOTLOADER, &data->flags);
2182                 btintel_check_bdaddr(hdev);
2183                 return 0;
2184         }
2185
2186         /* If the device is not in bootloader mode, then the only possible
2187          * choice is to return an error and abort the device initialization.
2188          */
2189         if (ver.fw_variant != 0x06) {
2190                 bt_dev_err(hdev, "Unsupported Intel firmware variant (%u)",
2191                            ver.fw_variant);
2192                 return -ENODEV;
2193         }
2194
2195         /* Read the secure boot parameters to identify the operating
2196          * details of the bootloader.
2197          */
2198         err = btintel_read_boot_params(hdev, &params);
2199         if (err)
2200                 return err;
2201
2202         /* It is required that every single firmware fragment is acknowledged
2203          * with a command complete event. If the boot parameters indicate
2204          * that this bootloader does not send them, then abort the setup.
2205          */
2206         if (params.limited_cce != 0x00) {
2207                 bt_dev_err(hdev, "Unsupported Intel firmware loading method (%u)",
2208                            params.limited_cce);
2209                 return -EINVAL;
2210         }
2211
2212         /* If the OTP has no valid Bluetooth device address, then there will
2213          * also be no valid address for the operational firmware.
2214          */
2215         if (!bacmp(&params.otp_bdaddr, BDADDR_ANY)) {
2216                 bt_dev_info(hdev, "No device address configured");
2217                 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
2218         }
2219
2220         /* With this Intel bootloader only the hardware variant and device
2221          * revision information are used to select the right firmware for SfP
2222          * and WsP.
2223          *
2224          * The firmware filename is ibt-<hw_variant>-<dev_revid>.sfi.
2225          *
2226          * Currently the supported hardware variants are:
2227          *   11 (0x0b) for iBT3.0 (LnP/SfP)
2228          *   12 (0x0c) for iBT3.5 (WsP)
2229          *
2230          * For ThP/JfP and for future SKU's, the FW name varies based on HW
2231          * variant, HW revision and FW revision, as these are dependent on CNVi
2232          * and RF Combination.
2233          *
2234          *   17 (0x11) for iBT3.5 (JfP)
2235          *   18 (0x12) for iBT3.5 (ThP)
2236          *
2237          * The firmware file name for these will be
2238          * ibt-<hw_variant>-<hw_revision>-<fw_revision>.sfi.
2239          *
2240          */
2241         err = btusb_setup_intel_new_get_fw_name(&ver, &params, fwname,
2242                                                 sizeof(fwname), "sfi");
2243         if (!err) {
2244                 bt_dev_err(hdev, "Unsupported Intel firmware naming");
2245                 return -EINVAL;
2246         }
2247
2248         err = request_firmware(&fw, fwname, &hdev->dev);
2249         if (err < 0) {
2250                 bt_dev_err(hdev, "Failed to load Intel firmware file (%d)", err);
2251                 return err;
2252         }
2253
2254         bt_dev_info(hdev, "Found device firmware: %s", fwname);
2255
2256         /* Save the DDC file name for later use to apply once the firmware
2257          * downloading is done.
2258          */
2259         err = btusb_setup_intel_new_get_fw_name(&ver, &params, fwname,
2260                                                 sizeof(fwname), "ddc");
2261         if (!err) {
2262                 bt_dev_err(hdev, "Unsupported Intel firmware naming");
2263                 return -EINVAL;
2264         }
2265
2266         if (fw->size < 644) {
2267                 bt_dev_err(hdev, "Invalid size of firmware file (%zu)",
2268                            fw->size);
2269                 err = -EBADF;
2270                 goto done;
2271         }
2272
2273         set_bit(BTUSB_DOWNLOADING, &data->flags);
2274
2275         /* Start firmware downloading and get boot parameter */
2276         err = btintel_download_firmware(hdev, fw, &boot_param);
2277         if (err < 0)
2278                 goto done;
2279
2280         set_bit(BTUSB_FIRMWARE_LOADED, &data->flags);
2281
2282         bt_dev_info(hdev, "Waiting for firmware download to complete");
2283
2284         /* Before switching the device into operational mode and with that
2285          * booting the loaded firmware, wait for the bootloader notification
2286          * that all fragments have been successfully received.
2287          *
2288          * When the event processing receives the notification, then the
2289          * BTUSB_DOWNLOADING flag will be cleared.
2290          *
2291          * The firmware loading should not take longer than 5 seconds
2292          * and thus just timeout if that happens and fail the setup
2293          * of this device.
2294          */
2295         err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING,
2296                                   TASK_INTERRUPTIBLE,
2297                                   msecs_to_jiffies(5000));
2298         if (err == -EINTR) {
2299                 bt_dev_err(hdev, "Firmware loading interrupted");
2300                 goto done;
2301         }
2302
2303         if (err) {
2304                 bt_dev_err(hdev, "Firmware loading timeout");
2305                 err = -ETIMEDOUT;
2306                 goto done;
2307         }
2308
2309         if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) {
2310                 bt_dev_err(hdev, "Firmware loading failed");
2311                 err = -ENOEXEC;
2312                 goto done;
2313         }
2314
2315         rettime = ktime_get();
2316         delta = ktime_sub(rettime, calltime);
2317         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2318
2319         bt_dev_info(hdev, "Firmware loaded in %llu usecs", duration);
2320
2321 done:
2322         release_firmware(fw);
2323
2324         if (err < 0)
2325                 return err;
2326
2327         calltime = ktime_get();
2328
2329         set_bit(BTUSB_BOOTING, &data->flags);
2330
2331         err = btintel_send_intel_reset(hdev, boot_param);
2332         if (err)
2333                 return err;
2334
2335         /* The bootloader will not indicate when the device is ready. This
2336          * is done by the operational firmware sending bootup notification.
2337          *
2338          * Booting into operational firmware should not take longer than
2339          * 1 second. However if that happens, then just fail the setup
2340          * since something went wrong.
2341          */
2342         bt_dev_info(hdev, "Waiting for device to boot");
2343
2344         err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING,
2345                                   TASK_INTERRUPTIBLE,
2346                                   msecs_to_jiffies(1000));
2347
2348         if (err == -EINTR) {
2349                 bt_dev_err(hdev, "Device boot interrupted");
2350                 return -EINTR;
2351         }
2352
2353         if (err) {
2354                 bt_dev_err(hdev, "Device boot timeout");
2355                 return -ETIMEDOUT;
2356         }
2357
2358         rettime = ktime_get();
2359         delta = ktime_sub(rettime, calltime);
2360         duration = (unsigned long long) ktime_to_ns(delta) >> 10;
2361
2362         bt_dev_info(hdev, "Device booted in %llu usecs", duration);
2363
2364         clear_bit(BTUSB_BOOTLOADER, &data->flags);
2365
2366         /* Once the device is running in operational mode, it needs to apply
2367          * the device configuration (DDC) parameters.
2368          *
2369          * The device can work without DDC parameters, so even if it fails
2370          * to load the file, no need to fail the setup.
2371          */
2372         btintel_load_ddc_config(hdev, fwname);
2373
2374         /* Set the event mask for Intel specific vendor events. This enables
2375          * a few extra events that are useful during general operation. It
2376          * does not enable any debugging related events.
2377          *
2378          * The device will function correctly without these events enabled
2379          * and thus no need to fail the setup.
2380          */
2381         btintel_set_event_mask(hdev, false);
2382
2383         return 0;
2384 }
2385
2386 static int btusb_shutdown_intel(struct hci_dev *hdev)
2387 {
2388         struct sk_buff *skb;
2389         long ret;
2390
2391         /* In the shutdown sequence where Bluetooth is turned off followed
2392          * by WiFi being turned off, turning WiFi back on causes issue with
2393          * the RF calibration.
2394          *
2395          * To ensure that any RF activity has been stopped, issue HCI Reset
2396          * command to clear all ongoing activity including advertising,
2397          * scanning etc.
2398          */
2399         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2400         if (IS_ERR(skb)) {
2401                 ret = PTR_ERR(skb);
2402                 bt_dev_err(hdev, "HCI reset during shutdown failed");
2403                 return ret;
2404         }
2405         kfree_skb(skb);
2406
2407         /* Some platforms have an issue with BT LED when the interface is
2408          * down or BT radio is turned off, which takes 5 seconds to BT LED
2409          * goes off. This command turns off the BT LED immediately.
2410          */
2411         skb = __hci_cmd_sync(hdev, 0xfc3f, 0, NULL, HCI_INIT_TIMEOUT);
2412         if (IS_ERR(skb)) {
2413                 ret = PTR_ERR(skb);
2414                 bt_dev_err(hdev, "turning off Intel device LED failed");
2415                 return ret;
2416         }
2417         kfree_skb(skb);
2418
2419         return 0;
2420 }
2421
2422 static int btusb_shutdown_intel_new(struct hci_dev *hdev)
2423 {
2424         struct sk_buff *skb;
2425
2426         /* Send HCI Reset to the controller to stop any BT activity which
2427          * were triggered. This will help to save power and maintain the
2428          * sync b/w Host and controller
2429          */
2430         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
2431         if (IS_ERR(skb)) {
2432                 bt_dev_err(hdev, "HCI reset during shutdown failed");
2433                 return PTR_ERR(skb);
2434         }
2435         kfree_skb(skb);
2436
2437         return 0;
2438 }
2439
2440 #ifdef CONFIG_PM
2441 /* Configure an out-of-band gpio as wake-up pin, if specified in device tree */
2442 static int marvell_config_oob_wake(struct hci_dev *hdev)
2443 {
2444         struct sk_buff *skb;
2445         struct btusb_data *data = hci_get_drvdata(hdev);
2446         struct device *dev = &data->udev->dev;
2447         u16 pin, gap, opcode;
2448         int ret;
2449         u8 cmd[5];
2450
2451         /* Move on if no wakeup pin specified */
2452         if (of_property_read_u16(dev->of_node, "marvell,wakeup-pin", &pin) ||
2453             of_property_read_u16(dev->of_node, "marvell,wakeup-gap-ms", &gap))
2454                 return 0;
2455
2456         /* Vendor specific command to configure a GPIO as wake-up pin */
2457         opcode = hci_opcode_pack(0x3F, 0x59);
2458         cmd[0] = opcode & 0xFF;
2459         cmd[1] = opcode >> 8;
2460         cmd[2] = 2; /* length of parameters that follow */
2461         cmd[3] = pin;
2462         cmd[4] = gap; /* time in ms, for which wakeup pin should be asserted */
2463
2464         skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
2465         if (!skb) {
2466                 bt_dev_err(hdev, "%s: No memory\n", __func__);
2467                 return -ENOMEM;
2468         }
2469
2470         skb_put_data(skb, cmd, sizeof(cmd));
2471         hci_skb_pkt_type(skb) = HCI_COMMAND_PKT;
2472
2473         ret = btusb_send_frame(hdev, skb);
2474         if (ret) {
2475                 bt_dev_err(hdev, "%s: configuration failed\n", __func__);
2476                 kfree_skb(skb);
2477                 return ret;
2478         }
2479
2480         return 0;
2481 }
2482 #endif
2483
2484 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev,
2485                                     const bdaddr_t *bdaddr)
2486 {
2487         struct sk_buff *skb;
2488         u8 buf[8];
2489         long ret;
2490
2491         buf[0] = 0xfe;
2492         buf[1] = sizeof(bdaddr_t);
2493         memcpy(buf + 2, bdaddr, sizeof(bdaddr_t));
2494
2495         skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2496         if (IS_ERR(skb)) {
2497                 ret = PTR_ERR(skb);
2498                 bt_dev_err(hdev, "changing Marvell device address failed (%ld)",
2499                            ret);
2500                 return ret;
2501         }
2502         kfree_skb(skb);
2503
2504         return 0;
2505 }
2506
2507 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev,
2508                                     const bdaddr_t *bdaddr)
2509 {
2510         struct sk_buff *skb;
2511         u8 buf[10];
2512         long ret;
2513
2514         buf[0] = 0x01;
2515         buf[1] = 0x01;
2516         buf[2] = 0x00;
2517         buf[3] = sizeof(bdaddr_t);
2518         memcpy(buf + 4, bdaddr, sizeof(bdaddr_t));
2519
2520         skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT);
2521         if (IS_ERR(skb)) {
2522                 ret = PTR_ERR(skb);
2523                 bt_dev_err(hdev, "Change address command failed (%ld)", ret);
2524                 return ret;
2525         }
2526         kfree_skb(skb);
2527
2528         return 0;
2529 }
2530
2531 #define QCA_DFU_PACKET_LEN      4096
2532
2533 #define QCA_GET_TARGET_VERSION  0x09
2534 #define QCA_CHECK_STATUS        0x05
2535 #define QCA_DFU_DOWNLOAD        0x01
2536
2537 #define QCA_SYSCFG_UPDATED      0x40
2538 #define QCA_PATCH_UPDATED       0x80
2539 #define QCA_DFU_TIMEOUT         3000
2540
2541 struct qca_version {
2542         __le32  rom_version;
2543         __le32  patch_version;
2544         __le32  ram_version;
2545         __le32  ref_clock;
2546         __u8    reserved[4];
2547 } __packed;
2548
2549 struct qca_rampatch_version {
2550         __le16  rom_version;
2551         __le16  patch_version;
2552 } __packed;
2553
2554 struct qca_device_info {
2555         u32     rom_version;
2556         u8      rampatch_hdr;   /* length of header in rampatch */
2557         u8      nvm_hdr;        /* length of header in NVM */
2558         u8      ver_offset;     /* offset of version structure in rampatch */
2559 };
2560
2561 static const struct qca_device_info qca_devices_table[] = {
2562         { 0x00000100, 20, 4, 10 }, /* Rome 1.0 */
2563         { 0x00000101, 20, 4, 10 }, /* Rome 1.1 */
2564         { 0x00000200, 28, 4, 18 }, /* Rome 2.0 */
2565         { 0x00000201, 28, 4, 18 }, /* Rome 2.1 */
2566         { 0x00000300, 28, 4, 18 }, /* Rome 3.0 */
2567         { 0x00000302, 28, 4, 18 }, /* Rome 3.2 */
2568 };
2569
2570 static int btusb_qca_send_vendor_req(struct usb_device *udev, u8 request,
2571                                      void *data, u16 size)
2572 {
2573         int pipe, err;
2574         u8 *buf;
2575
2576         buf = kmalloc(size, GFP_KERNEL);
2577         if (!buf)
2578                 return -ENOMEM;
2579
2580         /* Found some of USB hosts have IOT issues with ours so that we should
2581          * not wait until HCI layer is ready.
2582          */
2583         pipe = usb_rcvctrlpipe(udev, 0);
2584         err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN,
2585                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2586         if (err < 0) {
2587                 dev_err(&udev->dev, "Failed to access otp area (%d)", err);
2588                 goto done;
2589         }
2590
2591         memcpy(data, buf, size);
2592
2593 done:
2594         kfree(buf);
2595
2596         return err;
2597 }
2598
2599 static int btusb_setup_qca_download_fw(struct hci_dev *hdev,
2600                                        const struct firmware *firmware,
2601                                        size_t hdr_size)
2602 {
2603         struct btusb_data *btdata = hci_get_drvdata(hdev);
2604         struct usb_device *udev = btdata->udev;
2605         size_t count, size, sent = 0;
2606         int pipe, len, err;
2607         u8 *buf;
2608
2609         buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL);
2610         if (!buf)
2611                 return -ENOMEM;
2612
2613         count = firmware->size;
2614
2615         size = min_t(size_t, count, hdr_size);
2616         memcpy(buf, firmware->data, size);
2617
2618         /* USB patches should go down to controller through USB path
2619          * because binary format fits to go down through USB channel.
2620          * USB control path is for patching headers and USB bulk is for
2621          * patch body.
2622          */
2623         pipe = usb_sndctrlpipe(udev, 0);
2624         err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR,
2625                               0, 0, buf, size, USB_CTRL_SET_TIMEOUT);
2626         if (err < 0) {
2627                 bt_dev_err(hdev, "Failed to send headers (%d)", err);
2628                 goto done;
2629         }
2630
2631         sent += size;
2632         count -= size;
2633
2634         while (count) {
2635                 size = min_t(size_t, count, QCA_DFU_PACKET_LEN);
2636
2637                 memcpy(buf, firmware->data + sent, size);
2638
2639                 pipe = usb_sndbulkpipe(udev, 0x02);
2640                 err = usb_bulk_msg(udev, pipe, buf, size, &len,
2641                                    QCA_DFU_TIMEOUT);
2642                 if (err < 0) {
2643                         bt_dev_err(hdev, "Failed to send body at %zd of %zd (%d)",
2644                                    sent, firmware->size, err);
2645                         break;
2646                 }
2647
2648                 if (size != len) {
2649                         bt_dev_err(hdev, "Failed to get bulk buffer");
2650                         err = -EILSEQ;
2651                         break;
2652                 }
2653
2654                 sent  += size;
2655                 count -= size;
2656         }
2657
2658 done:
2659         kfree(buf);
2660         return err;
2661 }
2662
2663 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev,
2664                                          struct qca_version *ver,
2665                                          const struct qca_device_info *info)
2666 {
2667         struct qca_rampatch_version *rver;
2668         const struct firmware *fw;
2669         u32 ver_rom, ver_patch;
2670         u16 rver_rom, rver_patch;
2671         char fwname[64];
2672         int err;
2673
2674         ver_rom = le32_to_cpu(ver->rom_version);
2675         ver_patch = le32_to_cpu(ver->patch_version);
2676
2677         snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom);
2678
2679         err = request_firmware(&fw, fwname, &hdev->dev);
2680         if (err) {
2681                 bt_dev_err(hdev, "failed to request rampatch file: %s (%d)",
2682                            fwname, err);
2683                 return err;
2684         }
2685
2686         bt_dev_info(hdev, "using rampatch file: %s", fwname);
2687
2688         rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset);
2689         rver_rom = le16_to_cpu(rver->rom_version);
2690         rver_patch = le16_to_cpu(rver->patch_version);
2691
2692         bt_dev_info(hdev, "QCA: patch rome 0x%x build 0x%x, "
2693                     "firmware rome 0x%x build 0x%x",
2694                     rver_rom, rver_patch, ver_rom, ver_patch);
2695
2696         if (rver_rom != ver_rom || rver_patch <= ver_patch) {
2697                 bt_dev_err(hdev, "rampatch file version did not match with firmware");
2698                 err = -EINVAL;
2699                 goto done;
2700         }
2701
2702         err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr);
2703
2704 done:
2705         release_firmware(fw);
2706
2707         return err;
2708 }
2709
2710 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev,
2711                                     struct qca_version *ver,
2712                                     const struct qca_device_info *info)
2713 {
2714         const struct firmware *fw;
2715         char fwname[64];
2716         int err;
2717
2718         snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x.bin",
2719                  le32_to_cpu(ver->rom_version));
2720
2721         err = request_firmware(&fw, fwname, &hdev->dev);
2722         if (err) {
2723                 bt_dev_err(hdev, "failed to request NVM file: %s (%d)",
2724                            fwname, err);
2725                 return err;
2726         }
2727
2728         bt_dev_info(hdev, "using NVM file: %s", fwname);
2729
2730         err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr);
2731
2732         release_firmware(fw);
2733
2734         return err;
2735 }
2736
2737 /* identify the ROM version and check whether patches are needed */
2738 static bool btusb_qca_need_patch(struct usb_device *udev)
2739 {
2740         struct qca_version ver;
2741
2742         if (btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
2743                                       sizeof(ver)) < 0)
2744                 return false;
2745         /* only low ROM versions need patches */
2746         return !(le32_to_cpu(ver.rom_version) & ~0xffffU);
2747 }
2748
2749 static int btusb_setup_qca(struct hci_dev *hdev)
2750 {
2751         struct btusb_data *btdata = hci_get_drvdata(hdev);
2752         struct usb_device *udev = btdata->udev;
2753         const struct qca_device_info *info = NULL;
2754         struct qca_version ver;
2755         u32 ver_rom;
2756         u8 status;
2757         int i, err;
2758
2759         err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver,
2760                                         sizeof(ver));
2761         if (err < 0)
2762                 return err;
2763
2764         ver_rom = le32_to_cpu(ver.rom_version);
2765         /* Don't care about high ROM versions */
2766         if (ver_rom & ~0xffffU)
2767                 return 0;
2768
2769         for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) {
2770                 if (ver_rom == qca_devices_table[i].rom_version)
2771                         info = &qca_devices_table[i];
2772         }
2773         if (!info) {
2774                 bt_dev_err(hdev, "don't support firmware rome 0x%x", ver_rom);
2775                 return -ENODEV;
2776         }
2777
2778         err = btusb_qca_send_vendor_req(udev, QCA_CHECK_STATUS, &status,
2779                                         sizeof(status));
2780         if (err < 0)
2781                 return err;
2782
2783         if (!(status & QCA_PATCH_UPDATED)) {
2784                 err = btusb_setup_qca_load_rampatch(hdev, &ver, info);
2785                 if (err < 0)
2786                         return err;
2787         }
2788
2789         if (!(status & QCA_SYSCFG_UPDATED)) {
2790                 err = btusb_setup_qca_load_nvm(hdev, &ver, info);
2791                 if (err < 0)
2792                         return err;
2793         }
2794
2795         return 0;
2796 }
2797
2798 #ifdef CONFIG_BT_HCIBTUSB_BCM
2799 static inline int __set_diag_interface(struct hci_dev *hdev)
2800 {
2801         struct btusb_data *data = hci_get_drvdata(hdev);
2802         struct usb_interface *intf = data->diag;
2803         int i;
2804
2805         if (!data->diag)
2806                 return -ENODEV;
2807
2808         data->diag_tx_ep = NULL;
2809         data->diag_rx_ep = NULL;
2810
2811         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
2812                 struct usb_endpoint_descriptor *ep_desc;
2813
2814                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
2815
2816                 if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
2817                         data->diag_tx_ep = ep_desc;
2818                         continue;
2819                 }
2820
2821                 if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
2822                         data->diag_rx_ep = ep_desc;
2823                         continue;
2824                 }
2825         }
2826
2827         if (!data->diag_tx_ep || !data->diag_rx_ep) {
2828                 bt_dev_err(hdev, "invalid diagnostic descriptors");
2829                 return -ENODEV;
2830         }
2831
2832         return 0;
2833 }
2834
2835 static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable)
2836 {
2837         struct btusb_data *data = hci_get_drvdata(hdev);
2838         struct sk_buff *skb;
2839         struct urb *urb;
2840         unsigned int pipe;
2841
2842         if (!data->diag_tx_ep)
2843                 return ERR_PTR(-ENODEV);
2844
2845         urb = usb_alloc_urb(0, GFP_KERNEL);
2846         if (!urb)
2847                 return ERR_PTR(-ENOMEM);
2848
2849         skb = bt_skb_alloc(2, GFP_KERNEL);
2850         if (!skb) {
2851                 usb_free_urb(urb);
2852                 return ERR_PTR(-ENOMEM);
2853         }
2854
2855         skb_put_u8(skb, 0xf0);
2856         skb_put_u8(skb, enable);
2857
2858         pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress);
2859
2860         usb_fill_bulk_urb(urb, data->udev, pipe,
2861                           skb->data, skb->len, btusb_tx_complete, skb);
2862
2863         skb->dev = (void *)hdev;
2864
2865         return urb;
2866 }
2867
2868 static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable)
2869 {
2870         struct btusb_data *data = hci_get_drvdata(hdev);
2871         struct urb *urb;
2872
2873         if (!data->diag)
2874                 return -ENODEV;
2875
2876         if (!test_bit(HCI_RUNNING, &hdev->flags))
2877                 return -ENETDOWN;
2878
2879         urb = alloc_diag_urb(hdev, enable);
2880         if (IS_ERR(urb))
2881                 return PTR_ERR(urb);
2882
2883         return submit_or_queue_tx_urb(hdev, urb);
2884 }
2885 #endif
2886
2887 #ifdef CONFIG_PM
2888 static irqreturn_t btusb_oob_wake_handler(int irq, void *priv)
2889 {
2890         struct btusb_data *data = priv;
2891
2892         pm_wakeup_event(&data->udev->dev, 0);
2893         pm_system_wakeup();
2894
2895         /* Disable only if not already disabled (keep it balanced) */
2896         if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
2897                 disable_irq_nosync(irq);
2898                 disable_irq_wake(irq);
2899         }
2900         return IRQ_HANDLED;
2901 }
2902
2903 static const struct of_device_id btusb_match_table[] = {
2904         { .compatible = "usb1286,204e" },
2905         { .compatible = "usbcf3,e300" }, /* QCA6174A */
2906         { .compatible = "usb4ca,301a" }, /* QCA6174A (Lite-On) */
2907         { }
2908 };
2909 MODULE_DEVICE_TABLE(of, btusb_match_table);
2910
2911 /* Use an oob wakeup pin? */
2912 static int btusb_config_oob_wake(struct hci_dev *hdev)
2913 {
2914         struct btusb_data *data = hci_get_drvdata(hdev);
2915         struct device *dev = &data->udev->dev;
2916         int irq, ret;
2917
2918         clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
2919
2920         if (!of_match_device(btusb_match_table, dev))
2921                 return 0;
2922
2923         /* Move on if no IRQ specified */
2924         irq = of_irq_get_byname(dev->of_node, "wakeup");
2925         if (irq <= 0) {
2926                 bt_dev_dbg(hdev, "%s: no OOB Wakeup IRQ in DT", __func__);
2927                 return 0;
2928         }
2929
2930         irq_set_status_flags(irq, IRQ_NOAUTOEN);
2931         ret = devm_request_irq(&hdev->dev, irq, btusb_oob_wake_handler,
2932                                0, "OOB Wake-on-BT", data);
2933         if (ret) {
2934                 bt_dev_err(hdev, "%s: IRQ request failed", __func__);
2935                 return ret;
2936         }
2937
2938         ret = device_init_wakeup(dev, true);
2939         if (ret) {
2940                 bt_dev_err(hdev, "%s: failed to init_wakeup", __func__);
2941                 return ret;
2942         }
2943
2944         data->oob_wake_irq = irq;
2945         bt_dev_info(hdev, "OOB Wake-on-BT configured at IRQ %u", irq);
2946         return 0;
2947 }
2948 #endif
2949
2950 static void btusb_check_needs_reset_resume(struct usb_interface *intf)
2951 {
2952         if (dmi_check_system(btusb_needs_reset_resume_table))
2953                 interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME;
2954 }
2955
2956 static int btusb_probe(struct usb_interface *intf,
2957                        const struct usb_device_id *id)
2958 {
2959         struct usb_endpoint_descriptor *ep_desc;
2960         struct gpio_desc *reset_gpio;
2961         struct btusb_data *data;
2962         struct hci_dev *hdev;
2963         unsigned ifnum_base;
2964         int i, err;
2965
2966         BT_DBG("intf %p id %p", intf, id);
2967
2968         /* interface numbers are hardcoded in the spec */
2969         if (intf->cur_altsetting->desc.bInterfaceNumber != 0) {
2970                 if (!(id->driver_info & BTUSB_IFNUM_2))
2971                         return -ENODEV;
2972                 if (intf->cur_altsetting->desc.bInterfaceNumber != 2)
2973                         return -ENODEV;
2974         }
2975
2976         ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber;
2977
2978         if (!id->driver_info) {
2979                 const struct usb_device_id *match;
2980
2981                 match = usb_match_id(intf, blacklist_table);
2982                 if (match)
2983                         id = match;
2984         }
2985
2986         if (id->driver_info == BTUSB_IGNORE)
2987                 return -ENODEV;
2988
2989         if (id->driver_info & BTUSB_ATH3012) {
2990                 struct usb_device *udev = interface_to_usbdev(intf);
2991
2992                 /* Old firmware would otherwise let ath3k driver load
2993                  * patch and sysconfig files
2994                  */
2995                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001 &&
2996                     !btusb_qca_need_patch(udev))
2997                         return -ENODEV;
2998         }
2999
3000         data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
3001         if (!data)
3002                 return -ENOMEM;
3003
3004         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
3005                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
3006
3007                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
3008                         data->intr_ep = ep_desc;
3009                         continue;
3010                 }
3011
3012                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
3013                         data->bulk_tx_ep = ep_desc;
3014                         continue;
3015                 }
3016
3017                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
3018                         data->bulk_rx_ep = ep_desc;
3019                         continue;
3020                 }
3021         }
3022
3023         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
3024                 return -ENODEV;
3025
3026         if (id->driver_info & BTUSB_AMP) {
3027                 data->cmdreq_type = USB_TYPE_CLASS | 0x01;
3028                 data->cmdreq = 0x2b;
3029         } else {
3030                 data->cmdreq_type = USB_TYPE_CLASS;
3031                 data->cmdreq = 0x00;
3032         }
3033
3034         data->udev = interface_to_usbdev(intf);
3035         data->intf = intf;
3036
3037         INIT_WORK(&data->work, btusb_work);
3038         INIT_WORK(&data->waker, btusb_waker);
3039         init_usb_anchor(&data->deferred);
3040         init_usb_anchor(&data->tx_anchor);
3041         spin_lock_init(&data->txlock);
3042
3043         init_usb_anchor(&data->intr_anchor);
3044         init_usb_anchor(&data->bulk_anchor);
3045         init_usb_anchor(&data->isoc_anchor);
3046         init_usb_anchor(&data->diag_anchor);
3047         spin_lock_init(&data->rxlock);
3048
3049         if (id->driver_info & BTUSB_INTEL_NEW) {
3050                 data->recv_event = btusb_recv_event_intel;
3051                 data->recv_bulk = btusb_recv_bulk_intel;
3052                 set_bit(BTUSB_BOOTLOADER, &data->flags);
3053         } else {
3054                 data->recv_event = hci_recv_frame;
3055                 data->recv_bulk = btusb_recv_bulk;
3056         }
3057
3058         hdev = hci_alloc_dev();
3059         if (!hdev)
3060                 return -ENOMEM;
3061
3062         hdev->bus = HCI_USB;
3063         hci_set_drvdata(hdev, data);
3064
3065         if (id->driver_info & BTUSB_AMP)
3066                 hdev->dev_type = HCI_AMP;
3067         else
3068                 hdev->dev_type = HCI_PRIMARY;
3069
3070         data->hdev = hdev;
3071
3072         SET_HCIDEV_DEV(hdev, &intf->dev);
3073
3074         reset_gpio = gpiod_get_optional(&data->udev->dev, "reset",
3075                                         GPIOD_OUT_LOW);
3076         if (IS_ERR(reset_gpio)) {
3077                 err = PTR_ERR(reset_gpio);
3078                 goto out_free_dev;
3079         } else if (reset_gpio) {
3080                 data->reset_gpio = reset_gpio;
3081         }
3082
3083         hdev->open   = btusb_open;
3084         hdev->close  = btusb_close;
3085         hdev->flush  = btusb_flush;
3086         hdev->send   = btusb_send_frame;
3087         hdev->notify = btusb_notify;
3088
3089 #ifdef CONFIG_PM
3090         err = btusb_config_oob_wake(hdev);
3091         if (err)
3092                 goto out_free_dev;
3093
3094         /* Marvell devices may need a specific chip configuration */
3095         if (id->driver_info & BTUSB_MARVELL && data->oob_wake_irq) {
3096                 err = marvell_config_oob_wake(hdev);
3097                 if (err)
3098                         goto out_free_dev;
3099         }
3100 #endif
3101         if (id->driver_info & BTUSB_CW6622)
3102                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
3103
3104         if (id->driver_info & BTUSB_BCM2045)
3105                 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks);
3106
3107         if (id->driver_info & BTUSB_BCM92035)
3108                 hdev->setup = btusb_setup_bcm92035;
3109
3110 #ifdef CONFIG_BT_HCIBTUSB_BCM
3111         if (id->driver_info & BTUSB_BCM_PATCHRAM) {
3112                 hdev->manufacturer = 15;
3113                 hdev->setup = btbcm_setup_patchram;
3114                 hdev->set_diag = btusb_bcm_set_diag;
3115                 hdev->set_bdaddr = btbcm_set_bdaddr;
3116
3117                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
3118                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
3119         }
3120
3121         if (id->driver_info & BTUSB_BCM_APPLE) {
3122                 hdev->manufacturer = 15;
3123                 hdev->setup = btbcm_setup_apple;
3124                 hdev->set_diag = btusb_bcm_set_diag;
3125
3126                 /* Broadcom LM_DIAG Interface numbers are hardcoded */
3127                 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2);
3128         }
3129 #endif
3130
3131         if (id->driver_info & BTUSB_INTEL) {
3132                 hdev->manufacturer = 2;
3133                 hdev->setup = btusb_setup_intel;
3134                 hdev->shutdown = btusb_shutdown_intel;
3135                 hdev->set_diag = btintel_set_diag_mfg;
3136                 hdev->set_bdaddr = btintel_set_bdaddr;
3137                 hdev->cmd_timeout = btusb_intel_cmd_timeout;
3138                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3139                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3140                 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
3141         }
3142
3143         if (id->driver_info & BTUSB_INTEL_NEW) {
3144                 hdev->manufacturer = 2;
3145                 hdev->send = btusb_send_frame_intel;
3146                 hdev->setup = btusb_setup_intel_new;
3147                 hdev->shutdown = btusb_shutdown_intel_new;
3148                 hdev->hw_error = btintel_hw_error;
3149                 hdev->set_diag = btintel_set_diag;
3150                 hdev->set_bdaddr = btintel_set_bdaddr;
3151                 hdev->cmd_timeout = btusb_intel_cmd_timeout;
3152                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3153                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3154                 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks);
3155         }
3156
3157         if (id->driver_info & BTUSB_MARVELL)
3158                 hdev->set_bdaddr = btusb_set_bdaddr_marvell;
3159
3160         if (id->driver_info & BTUSB_SWAVE) {
3161                 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks);
3162                 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks);
3163         }
3164
3165         if (id->driver_info & BTUSB_INTEL_BOOT) {
3166                 hdev->manufacturer = 2;
3167                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3168         }
3169
3170         if (id->driver_info & BTUSB_ATH3012) {
3171                 data->setup_on_usb = btusb_setup_qca;
3172                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
3173                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3174                 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
3175         }
3176
3177         if (id->driver_info & BTUSB_QCA_ROME) {
3178                 data->setup_on_usb = btusb_setup_qca;
3179                 hdev->set_bdaddr = btusb_set_bdaddr_ath3012;
3180                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3181                 btusb_check_needs_reset_resume(intf);
3182         }
3183
3184 #ifdef CONFIG_BT_HCIBTUSB_RTL
3185         if (id->driver_info & BTUSB_REALTEK) {
3186                 hdev->setup = btrtl_setup_realtek;
3187
3188                 /* Realtek devices lose their updated firmware over suspend,
3189                  * but the USB hub doesn't notice any status change.
3190                  * Explicitly request a device reset on resume.
3191                  */
3192                 interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME;
3193         }
3194 #endif
3195
3196         if (id->driver_info & BTUSB_AMP) {
3197                 /* AMP controllers do not support SCO packets */
3198                 data->isoc = NULL;
3199         } else {
3200                 /* Interface orders are hardcoded in the specification */
3201                 data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1);
3202                 data->isoc_ifnum = ifnum_base + 1;
3203         }
3204
3205         if (!reset)
3206                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3207
3208         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
3209                 if (!disable_scofix)
3210                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
3211         }
3212
3213         if (id->driver_info & BTUSB_BROKEN_ISOC)
3214                 data->isoc = NULL;
3215
3216         if (id->driver_info & BTUSB_DIGIANSWER) {
3217                 data->cmdreq_type = USB_TYPE_VENDOR;
3218                 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3219         }
3220
3221         if (id->driver_info & BTUSB_CSR) {
3222                 struct usb_device *udev = data->udev;
3223                 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
3224
3225                 /* Old firmware would otherwise execute USB reset */
3226                 if (bcdDevice < 0x117)
3227                         set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
3228
3229                 /* Fake CSR devices with broken commands */
3230                 if (bcdDevice <= 0x100 || bcdDevice == 0x134)
3231                         hdev->setup = btusb_setup_csr;
3232
3233                 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
3234         }
3235
3236         if (id->driver_info & BTUSB_SNIFFER) {
3237                 struct usb_device *udev = data->udev;
3238
3239                 /* New sniffer firmware has crippled HCI interface */
3240                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
3241                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
3242         }
3243
3244         if (id->driver_info & BTUSB_INTEL_BOOT) {
3245                 /* A bug in the bootloader causes that interrupt interface is
3246                  * only enabled after receiving SetInterface(0, AltSetting=0).
3247                  */
3248                 err = usb_set_interface(data->udev, 0, 0);
3249                 if (err < 0) {
3250                         BT_ERR("failed to set interface 0, alt 0 %d", err);
3251                         goto out_free_dev;
3252                 }
3253         }
3254
3255         if (data->isoc) {
3256                 err = usb_driver_claim_interface(&btusb_driver,
3257                                                  data->isoc, data);
3258                 if (err < 0)
3259                         goto out_free_dev;
3260         }
3261
3262 #ifdef CONFIG_BT_HCIBTUSB_BCM
3263         if (data->diag) {
3264                 if (!usb_driver_claim_interface(&btusb_driver,
3265                                                 data->diag, data))
3266                         __set_diag_interface(hdev);
3267                 else
3268                         data->diag = NULL;
3269         }
3270 #endif
3271
3272         if (enable_autosuspend)
3273                 usb_enable_autosuspend(data->udev);
3274
3275         err = hci_register_dev(hdev);
3276         if (err < 0)
3277                 goto out_free_dev;
3278
3279         usb_set_intfdata(intf, data);
3280
3281         return 0;
3282
3283 out_free_dev:
3284         if (data->reset_gpio)
3285                 gpiod_put(data->reset_gpio);
3286         hci_free_dev(hdev);
3287         return err;
3288 }
3289
3290 static void btusb_disconnect(struct usb_interface *intf)
3291 {
3292         struct btusb_data *data = usb_get_intfdata(intf);
3293         struct hci_dev *hdev;
3294
3295         BT_DBG("intf %p", intf);
3296
3297         if (!data)
3298                 return;
3299
3300         hdev = data->hdev;
3301         usb_set_intfdata(data->intf, NULL);
3302
3303         if (data->isoc)
3304                 usb_set_intfdata(data->isoc, NULL);
3305
3306         if (data->diag)
3307                 usb_set_intfdata(data->diag, NULL);
3308
3309         hci_unregister_dev(hdev);
3310
3311         if (intf == data->intf) {
3312                 if (data->isoc)
3313                         usb_driver_release_interface(&btusb_driver, data->isoc);
3314                 if (data->diag)
3315                         usb_driver_release_interface(&btusb_driver, data->diag);
3316         } else if (intf == data->isoc) {
3317                 if (data->diag)
3318                         usb_driver_release_interface(&btusb_driver, data->diag);
3319                 usb_driver_release_interface(&btusb_driver, data->intf);
3320         } else if (intf == data->diag) {
3321                 usb_driver_release_interface(&btusb_driver, data->intf);
3322                 if (data->isoc)
3323                         usb_driver_release_interface(&btusb_driver, data->isoc);
3324         }
3325
3326         if (data->oob_wake_irq)
3327                 device_init_wakeup(&data->udev->dev, false);
3328
3329         if (data->reset_gpio)
3330                 gpiod_put(data->reset_gpio);
3331
3332         hci_free_dev(hdev);
3333 }
3334
3335 #ifdef CONFIG_PM
3336 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
3337 {
3338         struct btusb_data *data = usb_get_intfdata(intf);
3339
3340         BT_DBG("intf %p", intf);
3341
3342         if (data->suspend_count++)
3343                 return 0;
3344
3345         spin_lock_irq(&data->txlock);
3346         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
3347                 set_bit(BTUSB_SUSPENDING, &data->flags);
3348                 spin_unlock_irq(&data->txlock);
3349         } else {
3350                 spin_unlock_irq(&data->txlock);
3351                 data->suspend_count--;
3352                 return -EBUSY;
3353         }
3354
3355         cancel_work_sync(&data->work);
3356
3357         btusb_stop_traffic(data);
3358         usb_kill_anchored_urbs(&data->tx_anchor);
3359
3360         if (data->oob_wake_irq && device_may_wakeup(&data->udev->dev)) {
3361                 set_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags);
3362                 enable_irq_wake(data->oob_wake_irq);
3363                 enable_irq(data->oob_wake_irq);
3364         }
3365
3366         return 0;
3367 }
3368
3369 static void play_deferred(struct btusb_data *data)
3370 {
3371         struct urb *urb;
3372         int err;
3373
3374         while ((urb = usb_get_from_anchor(&data->deferred))) {
3375                 usb_anchor_urb(urb, &data->tx_anchor);
3376
3377                 err = usb_submit_urb(urb, GFP_ATOMIC);
3378                 if (err < 0) {
3379                         if (err != -EPERM && err != -ENODEV)
3380                                 BT_ERR("%s urb %p submission failed (%d)",
3381                                        data->hdev->name, urb, -err);
3382                         kfree(urb->setup_packet);
3383                         usb_unanchor_urb(urb);
3384                         usb_free_urb(urb);
3385                         break;
3386                 }
3387
3388                 data->tx_in_flight++;
3389                 usb_free_urb(urb);
3390         }
3391
3392         /* Cleanup the rest deferred urbs. */
3393         while ((urb = usb_get_from_anchor(&data->deferred))) {
3394                 kfree(urb->setup_packet);
3395                 usb_free_urb(urb);
3396         }
3397 }
3398
3399 static int btusb_resume(struct usb_interface *intf)
3400 {
3401         struct btusb_data *data = usb_get_intfdata(intf);
3402         struct hci_dev *hdev = data->hdev;
3403         int err = 0;
3404
3405         BT_DBG("intf %p", intf);
3406
3407         if (--data->suspend_count)
3408                 return 0;
3409
3410         /* Disable only if not already disabled (keep it balanced) */
3411         if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) {
3412                 disable_irq(data->oob_wake_irq);
3413                 disable_irq_wake(data->oob_wake_irq);
3414         }
3415
3416         if (!test_bit(HCI_RUNNING, &hdev->flags))
3417                 goto done;
3418
3419         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
3420                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
3421                 if (err < 0) {
3422                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
3423                         goto failed;
3424                 }
3425         }
3426
3427         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
3428                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
3429                 if (err < 0) {
3430                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
3431                         goto failed;
3432                 }
3433
3434                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
3435         }
3436
3437         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
3438                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
3439                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
3440                 else
3441                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
3442         }
3443
3444         spin_lock_irq(&data->txlock);
3445         play_deferred(data);
3446         clear_bit(BTUSB_SUSPENDING, &data->flags);
3447         spin_unlock_irq(&data->txlock);
3448         schedule_work(&data->work);
3449
3450         return 0;
3451
3452 failed:
3453         usb_scuttle_anchored_urbs(&data->deferred);
3454 done:
3455         spin_lock_irq(&data->txlock);
3456         clear_bit(BTUSB_SUSPENDING, &data->flags);
3457         spin_unlock_irq(&data->txlock);
3458
3459         return err;
3460 }
3461 #endif
3462
3463 static struct usb_driver btusb_driver = {
3464         .name           = "btusb",
3465         .probe          = btusb_probe,
3466         .disconnect     = btusb_disconnect,
3467 #ifdef CONFIG_PM
3468         .suspend        = btusb_suspend,
3469         .resume         = btusb_resume,
3470 #endif
3471         .id_table       = btusb_table,
3472         .supports_autosuspend = 1,
3473         .disable_hub_initiated_lpm = 1,
3474 };
3475
3476 module_usb_driver(btusb_driver);
3477
3478 module_param(disable_scofix, bool, 0644);
3479 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
3480
3481 module_param(force_scofix, bool, 0644);
3482 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
3483
3484 module_param(enable_autosuspend, bool, 0644);
3485 MODULE_PARM_DESC(enable_autosuspend, "Enable USB autosuspend by default");
3486
3487 module_param(reset, bool, 0644);
3488 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
3489
3490 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
3491 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
3492 MODULE_VERSION(VERSION);
3493 MODULE_LICENSE("GPL");