1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * 4 * Generic Bluetooth USB driver 5 * 6 * Copyright (C) 2005-2008 Marcel Holtmann <marcel@holtmann.org> 7 */ 8 9 #include <linux/dmi.h> 10 #include <linux/module.h> 11 #include <linux/usb.h> 12 #include <linux/usb/quirks.h> 13 #include <linux/firmware.h> 14 #include <linux/iopoll.h> 15 #include <linux/of_device.h> 16 #include <linux/of_irq.h> 17 #include <linux/suspend.h> 18 #include <linux/gpio/consumer.h> 19 #include <asm/unaligned.h> 20 21 #include <net/bluetooth/bluetooth.h> 22 #include <net/bluetooth/hci_core.h> 23 24 #include "btintel.h" 25 #include "btbcm.h" 26 #include "btrtl.h" 27 28 #define VERSION "0.8" 29 30 static bool disable_scofix; 31 static bool force_scofix; 32 static bool enable_autosuspend = IS_ENABLED(CONFIG_BT_HCIBTUSB_AUTOSUSPEND); 33 34 static bool reset = true; 35 36 static struct usb_driver btusb_driver; 37 38 #define BTUSB_IGNORE 0x01 39 #define BTUSB_DIGIANSWER 0x02 40 #define BTUSB_CSR 0x04 41 #define BTUSB_SNIFFER 0x08 42 #define BTUSB_BCM92035 0x10 43 #define BTUSB_BROKEN_ISOC 0x20 44 #define BTUSB_WRONG_SCO_MTU 0x40 45 #define BTUSB_ATH3012 0x80 46 #define BTUSB_INTEL 0x100 47 #define BTUSB_INTEL_BOOT 0x200 48 #define BTUSB_BCM_PATCHRAM 0x400 49 #define BTUSB_MARVELL 0x800 50 #define BTUSB_SWAVE 0x1000 51 #define BTUSB_INTEL_NEW 0x2000 52 #define BTUSB_AMP 0x4000 53 #define BTUSB_QCA_ROME 0x8000 54 #define BTUSB_BCM_APPLE 0x10000 55 #define BTUSB_REALTEK 0x20000 56 #define BTUSB_BCM2045 0x40000 57 #define BTUSB_IFNUM_2 0x80000 58 #define BTUSB_CW6622 0x100000 59 #define BTUSB_MEDIATEK 0x200000 60 #define BTUSB_WIDEBAND_SPEECH 0x400000 61 #define BTUSB_VALID_LE_STATES 0x800000 62 #define BTUSB_QCA_WCN6855 0x1000000 63 #define BTUSB_INTEL_NEWGEN 0x2000000 64 65 static const struct usb_device_id btusb_table[] = { 66 /* Generic Bluetooth USB device */ 67 { USB_DEVICE_INFO(0xe0, 0x01, 0x01) }, 68 69 /* Generic Bluetooth AMP device */ 70 { USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP }, 71 72 /* Generic Bluetooth USB interface */ 73 { USB_INTERFACE_INFO(0xe0, 0x01, 0x01) }, 74 75 /* Apple-specific (Broadcom) devices */ 76 { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01), 77 .driver_info = BTUSB_BCM_APPLE | BTUSB_IFNUM_2 }, 78 79 /* MediaTek MT76x0E */ 80 { USB_DEVICE(0x0e8d, 0x763f) }, 81 82 /* Broadcom SoftSailing reporting vendor specific */ 83 { USB_DEVICE(0x0a5c, 0x21e1) }, 84 85 /* Apple MacBookPro 7,1 */ 86 { USB_DEVICE(0x05ac, 0x8213) }, 87 88 /* Apple iMac11,1 */ 89 { USB_DEVICE(0x05ac, 0x8215) }, 90 91 /* Apple MacBookPro6,2 */ 92 { USB_DEVICE(0x05ac, 0x8218) }, 93 94 /* Apple MacBookAir3,1, MacBookAir3,2 */ 95 { USB_DEVICE(0x05ac, 0x821b) }, 96 97 /* Apple MacBookAir4,1 */ 98 { USB_DEVICE(0x05ac, 0x821f) }, 99 100 /* Apple MacBookPro8,2 */ 101 { USB_DEVICE(0x05ac, 0x821a) }, 102 103 /* Apple MacMini5,1 */ 104 { USB_DEVICE(0x05ac, 0x8281) }, 105 106 /* AVM BlueFRITZ! USB v2.0 */ 107 { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE }, 108 109 /* Bluetooth Ultraport Module from IBM */ 110 { USB_DEVICE(0x04bf, 0x030a) }, 111 112 /* ALPS Modules with non-standard id */ 113 { USB_DEVICE(0x044e, 0x3001) }, 114 { USB_DEVICE(0x044e, 0x3002) }, 115 116 /* Ericsson with non-standard id */ 117 { USB_DEVICE(0x0bdb, 0x1002) }, 118 119 /* Canyon CN-BTU1 with HID interfaces */ 120 { USB_DEVICE(0x0c10, 0x0000) }, 121 122 /* Broadcom BCM20702A0 */ 123 { USB_DEVICE(0x413c, 0x8197) }, 124 125 /* Broadcom BCM20702B0 (Dynex/Insignia) */ 126 { USB_DEVICE(0x19ff, 0x0239), .driver_info = BTUSB_BCM_PATCHRAM }, 127 128 /* Broadcom BCM43142A0 (Foxconn/Lenovo) */ 129 { USB_VENDOR_AND_INTERFACE_INFO(0x105b, 0xff, 0x01, 0x01), 130 .driver_info = BTUSB_BCM_PATCHRAM }, 131 132 /* Broadcom BCM920703 (HTC Vive) */ 133 { USB_VENDOR_AND_INTERFACE_INFO(0x0bb4, 0xff, 0x01, 0x01), 134 .driver_info = BTUSB_BCM_PATCHRAM }, 135 136 /* Foxconn - Hon Hai */ 137 { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01), 138 .driver_info = BTUSB_BCM_PATCHRAM }, 139 140 /* Lite-On Technology - Broadcom based */ 141 { USB_VENDOR_AND_INTERFACE_INFO(0x04ca, 0xff, 0x01, 0x01), 142 .driver_info = BTUSB_BCM_PATCHRAM }, 143 144 /* Broadcom devices with vendor specific id */ 145 { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01), 146 .driver_info = BTUSB_BCM_PATCHRAM }, 147 148 /* ASUSTek Computer - Broadcom based */ 149 { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01), 150 .driver_info = BTUSB_BCM_PATCHRAM }, 151 152 /* Belkin F8065bf - Broadcom based */ 153 { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01), 154 .driver_info = BTUSB_BCM_PATCHRAM }, 155 156 /* IMC Networks - Broadcom based */ 157 { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01), 158 .driver_info = BTUSB_BCM_PATCHRAM }, 159 160 /* Dell Computer - Broadcom based */ 161 { USB_VENDOR_AND_INTERFACE_INFO(0x413c, 0xff, 0x01, 0x01), 162 .driver_info = BTUSB_BCM_PATCHRAM }, 163 164 /* Toshiba Corp - Broadcom based */ 165 { USB_VENDOR_AND_INTERFACE_INFO(0x0930, 0xff, 0x01, 0x01), 166 .driver_info = BTUSB_BCM_PATCHRAM }, 167 168 /* Intel Bluetooth USB Bootloader (RAM module) */ 169 { USB_DEVICE(0x8087, 0x0a5a), 170 .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC }, 171 172 { } /* Terminating entry */ 173 }; 174 175 MODULE_DEVICE_TABLE(usb, btusb_table); 176 177 static const struct usb_device_id blacklist_table[] = { 178 /* CSR BlueCore devices */ 179 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR }, 180 181 /* Broadcom BCM2033 without firmware */ 182 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE }, 183 184 /* Broadcom BCM2045 devices */ 185 { USB_DEVICE(0x0a5c, 0x2045), .driver_info = BTUSB_BCM2045 }, 186 187 /* Atheros 3011 with sflash firmware */ 188 { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE }, 189 { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE }, 190 { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE }, 191 { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE }, 192 { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE }, 193 { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE }, 194 { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE }, 195 196 /* Atheros AR9285 Malbec with sflash firmware */ 197 { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE }, 198 199 /* Atheros 3012 with sflash firmware */ 200 { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 }, 201 { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 }, 202 { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 }, 203 { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 }, 204 { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 }, 205 { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 }, 206 { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 }, 207 { USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 }, 208 { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 }, 209 { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 }, 210 { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 }, 211 { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 }, 212 { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 }, 213 { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 }, 214 { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 }, 215 { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 }, 216 { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 }, 217 { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 }, 218 { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 }, 219 { USB_DEVICE(0x04ca, 0x3018), .driver_info = BTUSB_ATH3012 }, 220 { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 }, 221 { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 }, 222 { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 }, 223 { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 }, 224 { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 }, 225 { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 }, 226 { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 }, 227 { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 }, 228 { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 }, 229 { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 }, 230 { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 }, 231 { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 }, 232 { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 }, 233 { USB_DEVICE(0x0cf3, 0x817b), .driver_info = BTUSB_ATH3012 }, 234 { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 }, 235 { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 }, 236 { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 }, 237 { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 }, 238 { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 }, 239 { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 }, 240 { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 }, 241 { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 }, 242 { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 }, 243 { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 }, 244 { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 }, 245 { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 }, 246 { USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 }, 247 { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 }, 248 { USB_DEVICE(0x13d3, 0x3487), .driver_info = BTUSB_ATH3012 }, 249 { USB_DEVICE(0x13d3, 0x3490), .driver_info = BTUSB_ATH3012 }, 250 251 /* Atheros AR5BBU12 with sflash firmware */ 252 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE }, 253 254 /* Atheros AR5BBU12 with sflash firmware */ 255 { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 }, 256 { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 }, 257 258 /* QCA ROME chipset */ 259 { USB_DEVICE(0x0cf3, 0x535b), .driver_info = BTUSB_QCA_ROME | 260 BTUSB_WIDEBAND_SPEECH }, 261 { USB_DEVICE(0x0cf3, 0xe007), .driver_info = BTUSB_QCA_ROME | 262 BTUSB_WIDEBAND_SPEECH }, 263 { USB_DEVICE(0x0cf3, 0xe009), .driver_info = BTUSB_QCA_ROME | 264 BTUSB_WIDEBAND_SPEECH }, 265 { USB_DEVICE(0x0cf3, 0xe010), .driver_info = BTUSB_QCA_ROME | 266 BTUSB_WIDEBAND_SPEECH }, 267 { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME | 268 BTUSB_WIDEBAND_SPEECH }, 269 { USB_DEVICE(0x0cf3, 0xe301), .driver_info = BTUSB_QCA_ROME | 270 BTUSB_WIDEBAND_SPEECH }, 271 { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME | 272 BTUSB_WIDEBAND_SPEECH }, 273 { USB_DEVICE(0x0489, 0xe092), .driver_info = BTUSB_QCA_ROME | 274 BTUSB_WIDEBAND_SPEECH }, 275 { USB_DEVICE(0x0489, 0xe09f), .driver_info = BTUSB_QCA_ROME | 276 BTUSB_WIDEBAND_SPEECH }, 277 { USB_DEVICE(0x0489, 0xe0a2), .driver_info = BTUSB_QCA_ROME | 278 BTUSB_WIDEBAND_SPEECH }, 279 { USB_DEVICE(0x04ca, 0x3011), .driver_info = BTUSB_QCA_ROME | 280 BTUSB_WIDEBAND_SPEECH }, 281 { USB_DEVICE(0x04ca, 0x3015), .driver_info = BTUSB_QCA_ROME | 282 BTUSB_WIDEBAND_SPEECH }, 283 { USB_DEVICE(0x04ca, 0x3016), .driver_info = BTUSB_QCA_ROME | 284 BTUSB_WIDEBAND_SPEECH }, 285 { USB_DEVICE(0x04ca, 0x301a), .driver_info = BTUSB_QCA_ROME | 286 BTUSB_WIDEBAND_SPEECH }, 287 { USB_DEVICE(0x04ca, 0x3021), .driver_info = BTUSB_QCA_ROME | 288 BTUSB_WIDEBAND_SPEECH }, 289 { USB_DEVICE(0x13d3, 0x3491), .driver_info = BTUSB_QCA_ROME | 290 BTUSB_WIDEBAND_SPEECH }, 291 { USB_DEVICE(0x13d3, 0x3496), .driver_info = BTUSB_QCA_ROME | 292 BTUSB_WIDEBAND_SPEECH }, 293 { USB_DEVICE(0x13d3, 0x3501), .driver_info = BTUSB_QCA_ROME | 294 BTUSB_WIDEBAND_SPEECH }, 295 296 /* QCA WCN6855 chipset */ 297 { USB_DEVICE(0x0cf3, 0xe600), .driver_info = BTUSB_QCA_WCN6855 | 298 BTUSB_WIDEBAND_SPEECH }, 299 300 /* Broadcom BCM2035 */ 301 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 }, 302 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU }, 303 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU }, 304 305 /* Broadcom BCM2045 */ 306 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU }, 307 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU }, 308 309 /* IBM/Lenovo ThinkPad with Broadcom chip */ 310 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU }, 311 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU }, 312 313 /* HP laptop with Broadcom chip */ 314 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU }, 315 316 /* Dell laptop with Broadcom chip */ 317 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU }, 318 319 /* Dell Wireless 370 and 410 devices */ 320 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU }, 321 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU }, 322 323 /* Belkin F8T012 and F8T013 devices */ 324 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU }, 325 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU }, 326 327 /* Asus WL-BTD202 device */ 328 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU }, 329 330 /* Kensington Bluetooth USB adapter */ 331 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU }, 332 333 /* RTX Telecom based adapters with buggy SCO support */ 334 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC }, 335 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC }, 336 337 /* CONWISE Technology based adapters with buggy SCO support */ 338 { USB_DEVICE(0x0e5e, 0x6622), 339 .driver_info = BTUSB_BROKEN_ISOC | BTUSB_CW6622}, 340 341 /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */ 342 { USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE }, 343 344 /* Digianswer devices */ 345 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER }, 346 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE }, 347 348 /* CSR BlueCore Bluetooth Sniffer */ 349 { USB_DEVICE(0x0a12, 0x0002), 350 .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC }, 351 352 /* Frontline ComProbe Bluetooth Sniffer */ 353 { USB_DEVICE(0x16d3, 0x0002), 354 .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC }, 355 356 /* Marvell Bluetooth devices */ 357 { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL }, 358 { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL }, 359 { USB_DEVICE(0x1286, 0x204e), .driver_info = BTUSB_MARVELL }, 360 361 /* Intel Bluetooth devices */ 362 { USB_DEVICE(0x8087, 0x0025), .driver_info = BTUSB_INTEL_NEW | 363 BTUSB_WIDEBAND_SPEECH | 364 BTUSB_VALID_LE_STATES }, 365 { USB_DEVICE(0x8087, 0x0026), .driver_info = BTUSB_INTEL_NEW | 366 BTUSB_WIDEBAND_SPEECH }, 367 { USB_DEVICE(0x8087, 0x0029), .driver_info = BTUSB_INTEL_NEW | 368 BTUSB_WIDEBAND_SPEECH }, 369 { USB_DEVICE(0x8087, 0x0032), .driver_info = BTUSB_INTEL_NEWGEN | 370 BTUSB_WIDEBAND_SPEECH}, 371 { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR }, 372 { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL }, 373 { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL }, 374 { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_NEW | 375 BTUSB_WIDEBAND_SPEECH }, 376 { USB_DEVICE(0x8087, 0x0aa7), .driver_info = BTUSB_INTEL | 377 BTUSB_WIDEBAND_SPEECH }, 378 { USB_DEVICE(0x8087, 0x0aaa), .driver_info = BTUSB_INTEL_NEW | 379 BTUSB_WIDEBAND_SPEECH | 380 BTUSB_VALID_LE_STATES }, 381 382 /* Other Intel Bluetooth devices */ 383 { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01), 384 .driver_info = BTUSB_IGNORE }, 385 386 /* Realtek 8822CE Bluetooth devices */ 387 { USB_DEVICE(0x0bda, 0xb00c), .driver_info = BTUSB_REALTEK | 388 BTUSB_WIDEBAND_SPEECH }, 389 390 /* Realtek 8852AE Bluetooth devices */ 391 { USB_DEVICE(0x0bda, 0xc852), .driver_info = BTUSB_REALTEK | 392 BTUSB_WIDEBAND_SPEECH }, 393 394 /* Realtek Bluetooth devices */ 395 { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01), 396 .driver_info = BTUSB_REALTEK }, 397 398 /* MediaTek Bluetooth devices */ 399 { USB_VENDOR_AND_INTERFACE_INFO(0x0e8d, 0xe0, 0x01, 0x01), 400 .driver_info = BTUSB_MEDIATEK }, 401 402 /* Additional MediaTek MT7615E Bluetooth devices */ 403 { USB_DEVICE(0x13d3, 0x3560), .driver_info = BTUSB_MEDIATEK}, 404 405 /* Additional Realtek 8723AE Bluetooth devices */ 406 { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK }, 407 { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK }, 408 409 /* Additional Realtek 8723BE Bluetooth devices */ 410 { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK }, 411 { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK }, 412 { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK }, 413 { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK }, 414 { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK }, 415 { USB_DEVICE(0x13d3, 0x3494), .driver_info = BTUSB_REALTEK }, 416 417 /* Additional Realtek 8723BU Bluetooth devices */ 418 { USB_DEVICE(0x7392, 0xa611), .driver_info = BTUSB_REALTEK }, 419 420 /* Additional Realtek 8723DE Bluetooth devices */ 421 { USB_DEVICE(0x0bda, 0xb009), .driver_info = BTUSB_REALTEK }, 422 { USB_DEVICE(0x2ff8, 0xb011), .driver_info = BTUSB_REALTEK }, 423 424 /* Additional Realtek 8821AE Bluetooth devices */ 425 { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK }, 426 { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK }, 427 { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK }, 428 { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK }, 429 { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK }, 430 431 /* Additional Realtek 8822BE Bluetooth devices */ 432 { USB_DEVICE(0x13d3, 0x3526), .driver_info = BTUSB_REALTEK }, 433 { USB_DEVICE(0x0b05, 0x185c), .driver_info = BTUSB_REALTEK }, 434 435 /* Additional Realtek 8822CE Bluetooth devices */ 436 { USB_DEVICE(0x04ca, 0x4005), .driver_info = BTUSB_REALTEK | 437 BTUSB_WIDEBAND_SPEECH }, 438 { USB_DEVICE(0x04c5, 0x161f), .driver_info = BTUSB_REALTEK | 439 BTUSB_WIDEBAND_SPEECH }, 440 { USB_DEVICE(0x0b05, 0x18ef), .driver_info = BTUSB_REALTEK | 441 BTUSB_WIDEBAND_SPEECH }, 442 { USB_DEVICE(0x13d3, 0x3548), .driver_info = BTUSB_REALTEK | 443 BTUSB_WIDEBAND_SPEECH }, 444 { USB_DEVICE(0x13d3, 0x3549), .driver_info = BTUSB_REALTEK | 445 BTUSB_WIDEBAND_SPEECH }, 446 { USB_DEVICE(0x13d3, 0x3553), .driver_info = BTUSB_REALTEK | 447 BTUSB_WIDEBAND_SPEECH }, 448 { USB_DEVICE(0x13d3, 0x3555), .driver_info = BTUSB_REALTEK | 449 BTUSB_WIDEBAND_SPEECH }, 450 { USB_DEVICE(0x2ff8, 0x3051), .driver_info = BTUSB_REALTEK | 451 BTUSB_WIDEBAND_SPEECH }, 452 { USB_DEVICE(0x1358, 0xc123), .driver_info = BTUSB_REALTEK | 453 BTUSB_WIDEBAND_SPEECH }, 454 { USB_DEVICE(0x0bda, 0xc123), .driver_info = BTUSB_REALTEK | 455 BTUSB_WIDEBAND_SPEECH }, 456 457 /* Silicon Wave based devices */ 458 { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE }, 459 460 { } /* Terminating entry */ 461 }; 462 463 /* The Bluetooth USB module build into some devices needs to be reset on resume, 464 * this is a problem with the platform (likely shutting off all power) not with 465 * the module itself. So we use a DMI list to match known broken platforms. 466 */ 467 static const struct dmi_system_id btusb_needs_reset_resume_table[] = { 468 { 469 /* Dell OptiPlex 3060 (QCA ROME device 0cf3:e007) */ 470 .matches = { 471 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 472 DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 3060"), 473 }, 474 }, 475 { 476 /* Dell XPS 9360 (QCA ROME device 0cf3:e300) */ 477 .matches = { 478 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 479 DMI_MATCH(DMI_PRODUCT_NAME, "XPS 13 9360"), 480 }, 481 }, 482 { 483 /* Dell Inspiron 5565 (QCA ROME device 0cf3:e009) */ 484 .matches = { 485 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 486 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5565"), 487 }, 488 }, 489 {} 490 }; 491 492 #define BTUSB_MAX_ISOC_FRAMES 10 493 494 #define BTUSB_INTR_RUNNING 0 495 #define BTUSB_BULK_RUNNING 1 496 #define BTUSB_ISOC_RUNNING 2 497 #define BTUSB_SUSPENDING 3 498 #define BTUSB_DID_ISO_RESUME 4 499 #define BTUSB_BOOTLOADER 5 500 #define BTUSB_DOWNLOADING 6 501 #define BTUSB_FIRMWARE_LOADED 7 502 #define BTUSB_FIRMWARE_FAILED 8 503 #define BTUSB_BOOTING 9 504 #define BTUSB_DIAG_RUNNING 10 505 #define BTUSB_OOB_WAKE_ENABLED 11 506 #define BTUSB_HW_RESET_ACTIVE 12 507 #define BTUSB_TX_WAIT_VND_EVT 13 508 #define BTUSB_WAKEUP_DISABLE 14 509 #define BTUSB_USE_ALT1_FOR_WBS 15 510 511 struct btusb_data { 512 struct hci_dev *hdev; 513 struct usb_device *udev; 514 struct usb_interface *intf; 515 struct usb_interface *isoc; 516 struct usb_interface *diag; 517 unsigned isoc_ifnum; 518 519 unsigned long flags; 520 521 struct work_struct work; 522 struct work_struct waker; 523 524 struct usb_anchor deferred; 525 struct usb_anchor tx_anchor; 526 int tx_in_flight; 527 spinlock_t txlock; 528 529 struct usb_anchor intr_anchor; 530 struct usb_anchor bulk_anchor; 531 struct usb_anchor isoc_anchor; 532 struct usb_anchor diag_anchor; 533 struct usb_anchor ctrl_anchor; 534 spinlock_t rxlock; 535 536 struct sk_buff *evt_skb; 537 struct sk_buff *acl_skb; 538 struct sk_buff *sco_skb; 539 540 struct usb_endpoint_descriptor *intr_ep; 541 struct usb_endpoint_descriptor *bulk_tx_ep; 542 struct usb_endpoint_descriptor *bulk_rx_ep; 543 struct usb_endpoint_descriptor *isoc_tx_ep; 544 struct usb_endpoint_descriptor *isoc_rx_ep; 545 struct usb_endpoint_descriptor *diag_tx_ep; 546 struct usb_endpoint_descriptor *diag_rx_ep; 547 548 struct gpio_desc *reset_gpio; 549 550 __u8 cmdreq_type; 551 __u8 cmdreq; 552 553 unsigned int sco_num; 554 unsigned int air_mode; 555 bool usb_alt6_packet_flow; 556 int isoc_altsetting; 557 int suspend_count; 558 559 int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb); 560 int (*recv_bulk)(struct btusb_data *data, void *buffer, int count); 561 562 int (*setup_on_usb)(struct hci_dev *hdev); 563 564 int oob_wake_irq; /* irq for out-of-band wake-on-bt */ 565 unsigned cmd_timeout_cnt; 566 }; 567 568 static void btusb_intel_cmd_timeout(struct hci_dev *hdev) 569 { 570 struct btusb_data *data = hci_get_drvdata(hdev); 571 struct gpio_desc *reset_gpio = data->reset_gpio; 572 573 if (++data->cmd_timeout_cnt < 5) 574 return; 575 576 if (!reset_gpio) { 577 bt_dev_err(hdev, "No way to reset. Ignoring and continuing"); 578 return; 579 } 580 581 /* 582 * Toggle the hard reset line if the platform provides one. The reset 583 * is going to yank the device off the USB and then replug. So doing 584 * once is enough. The cleanup is handled correctly on the way out 585 * (standard USB disconnect), and the new device is detected cleanly 586 * and bound to the driver again like it should be. 587 */ 588 if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) { 589 bt_dev_err(hdev, "last reset failed? Not resetting again"); 590 return; 591 } 592 593 bt_dev_err(hdev, "Initiating HW reset via gpio"); 594 gpiod_set_value_cansleep(reset_gpio, 1); 595 msleep(100); 596 gpiod_set_value_cansleep(reset_gpio, 0); 597 } 598 599 static void btusb_rtl_cmd_timeout(struct hci_dev *hdev) 600 { 601 struct btusb_data *data = hci_get_drvdata(hdev); 602 struct gpio_desc *reset_gpio = data->reset_gpio; 603 604 if (++data->cmd_timeout_cnt < 5) 605 return; 606 607 if (!reset_gpio) { 608 bt_dev_err(hdev, "No gpio to reset Realtek device, ignoring"); 609 return; 610 } 611 612 /* Toggle the hard reset line. The Realtek device is going to 613 * yank itself off the USB and then replug. The cleanup is handled 614 * correctly on the way out (standard USB disconnect), and the new 615 * device is detected cleanly and bound to the driver again like 616 * it should be. 617 */ 618 if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) { 619 bt_dev_err(hdev, "last reset failed? Not resetting again"); 620 return; 621 } 622 623 bt_dev_err(hdev, "Reset Realtek device via gpio"); 624 gpiod_set_value_cansleep(reset_gpio, 1); 625 msleep(200); 626 gpiod_set_value_cansleep(reset_gpio, 0); 627 } 628 629 static void btusb_qca_cmd_timeout(struct hci_dev *hdev) 630 { 631 struct btusb_data *data = hci_get_drvdata(hdev); 632 int err; 633 634 if (++data->cmd_timeout_cnt < 5) 635 return; 636 637 bt_dev_err(hdev, "Multiple cmd timeouts seen. Resetting usb device."); 638 /* This is not an unbalanced PM reference since the device will reset */ 639 err = usb_autopm_get_interface(data->intf); 640 if (!err) 641 usb_queue_reset_device(data->intf); 642 else 643 bt_dev_err(hdev, "Failed usb_autopm_get_interface with %d", err); 644 } 645 646 static inline void btusb_free_frags(struct btusb_data *data) 647 { 648 unsigned long flags; 649 650 spin_lock_irqsave(&data->rxlock, flags); 651 652 kfree_skb(data->evt_skb); 653 data->evt_skb = NULL; 654 655 kfree_skb(data->acl_skb); 656 data->acl_skb = NULL; 657 658 kfree_skb(data->sco_skb); 659 data->sco_skb = NULL; 660 661 spin_unlock_irqrestore(&data->rxlock, flags); 662 } 663 664 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count) 665 { 666 struct sk_buff *skb; 667 unsigned long flags; 668 int err = 0; 669 670 spin_lock_irqsave(&data->rxlock, flags); 671 skb = data->evt_skb; 672 673 while (count) { 674 int len; 675 676 if (!skb) { 677 skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC); 678 if (!skb) { 679 err = -ENOMEM; 680 break; 681 } 682 683 hci_skb_pkt_type(skb) = HCI_EVENT_PKT; 684 hci_skb_expect(skb) = HCI_EVENT_HDR_SIZE; 685 } 686 687 len = min_t(uint, hci_skb_expect(skb), count); 688 skb_put_data(skb, buffer, len); 689 690 count -= len; 691 buffer += len; 692 hci_skb_expect(skb) -= len; 693 694 if (skb->len == HCI_EVENT_HDR_SIZE) { 695 /* Complete event header */ 696 hci_skb_expect(skb) = hci_event_hdr(skb)->plen; 697 698 if (skb_tailroom(skb) < hci_skb_expect(skb)) { 699 kfree_skb(skb); 700 skb = NULL; 701 702 err = -EILSEQ; 703 break; 704 } 705 } 706 707 if (!hci_skb_expect(skb)) { 708 /* Complete frame */ 709 data->recv_event(data->hdev, skb); 710 skb = NULL; 711 } 712 } 713 714 data->evt_skb = skb; 715 spin_unlock_irqrestore(&data->rxlock, flags); 716 717 return err; 718 } 719 720 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count) 721 { 722 struct sk_buff *skb; 723 unsigned long flags; 724 int err = 0; 725 726 spin_lock_irqsave(&data->rxlock, flags); 727 skb = data->acl_skb; 728 729 while (count) { 730 int len; 731 732 if (!skb) { 733 skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC); 734 if (!skb) { 735 err = -ENOMEM; 736 break; 737 } 738 739 hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT; 740 hci_skb_expect(skb) = HCI_ACL_HDR_SIZE; 741 } 742 743 len = min_t(uint, hci_skb_expect(skb), count); 744 skb_put_data(skb, buffer, len); 745 746 count -= len; 747 buffer += len; 748 hci_skb_expect(skb) -= len; 749 750 if (skb->len == HCI_ACL_HDR_SIZE) { 751 __le16 dlen = hci_acl_hdr(skb)->dlen; 752 753 /* Complete ACL header */ 754 hci_skb_expect(skb) = __le16_to_cpu(dlen); 755 756 if (skb_tailroom(skb) < hci_skb_expect(skb)) { 757 kfree_skb(skb); 758 skb = NULL; 759 760 err = -EILSEQ; 761 break; 762 } 763 } 764 765 if (!hci_skb_expect(skb)) { 766 /* Complete frame */ 767 hci_recv_frame(data->hdev, skb); 768 skb = NULL; 769 } 770 } 771 772 data->acl_skb = skb; 773 spin_unlock_irqrestore(&data->rxlock, flags); 774 775 return err; 776 } 777 778 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count) 779 { 780 struct sk_buff *skb; 781 unsigned long flags; 782 int err = 0; 783 784 spin_lock_irqsave(&data->rxlock, flags); 785 skb = data->sco_skb; 786 787 while (count) { 788 int len; 789 790 if (!skb) { 791 skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC); 792 if (!skb) { 793 err = -ENOMEM; 794 break; 795 } 796 797 hci_skb_pkt_type(skb) = HCI_SCODATA_PKT; 798 hci_skb_expect(skb) = HCI_SCO_HDR_SIZE; 799 } 800 801 len = min_t(uint, hci_skb_expect(skb), count); 802 skb_put_data(skb, buffer, len); 803 804 count -= len; 805 buffer += len; 806 hci_skb_expect(skb) -= len; 807 808 if (skb->len == HCI_SCO_HDR_SIZE) { 809 /* Complete SCO header */ 810 hci_skb_expect(skb) = hci_sco_hdr(skb)->dlen; 811 812 if (skb_tailroom(skb) < hci_skb_expect(skb)) { 813 kfree_skb(skb); 814 skb = NULL; 815 816 err = -EILSEQ; 817 break; 818 } 819 } 820 821 if (!hci_skb_expect(skb)) { 822 /* Complete frame */ 823 hci_recv_frame(data->hdev, skb); 824 skb = NULL; 825 } 826 } 827 828 data->sco_skb = skb; 829 spin_unlock_irqrestore(&data->rxlock, flags); 830 831 return err; 832 } 833 834 static void btusb_intr_complete(struct urb *urb) 835 { 836 struct hci_dev *hdev = urb->context; 837 struct btusb_data *data = hci_get_drvdata(hdev); 838 int err; 839 840 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, 841 urb->actual_length); 842 843 if (!test_bit(HCI_RUNNING, &hdev->flags)) 844 return; 845 846 if (urb->status == 0) { 847 hdev->stat.byte_rx += urb->actual_length; 848 849 if (btusb_recv_intr(data, urb->transfer_buffer, 850 urb->actual_length) < 0) { 851 bt_dev_err(hdev, "corrupted event packet"); 852 hdev->stat.err_rx++; 853 } 854 } else if (urb->status == -ENOENT) { 855 /* Avoid suspend failed when usb_kill_urb */ 856 return; 857 } 858 859 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags)) 860 return; 861 862 usb_mark_last_busy(data->udev); 863 usb_anchor_urb(urb, &data->intr_anchor); 864 865 err = usb_submit_urb(urb, GFP_ATOMIC); 866 if (err < 0) { 867 /* -EPERM: urb is being killed; 868 * -ENODEV: device got disconnected 869 */ 870 if (err != -EPERM && err != -ENODEV) 871 bt_dev_err(hdev, "urb %p failed to resubmit (%d)", 872 urb, -err); 873 usb_unanchor_urb(urb); 874 } 875 } 876 877 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags) 878 { 879 struct btusb_data *data = hci_get_drvdata(hdev); 880 struct urb *urb; 881 unsigned char *buf; 882 unsigned int pipe; 883 int err, size; 884 885 BT_DBG("%s", hdev->name); 886 887 if (!data->intr_ep) 888 return -ENODEV; 889 890 urb = usb_alloc_urb(0, mem_flags); 891 if (!urb) 892 return -ENOMEM; 893 894 size = le16_to_cpu(data->intr_ep->wMaxPacketSize); 895 896 buf = kmalloc(size, mem_flags); 897 if (!buf) { 898 usb_free_urb(urb); 899 return -ENOMEM; 900 } 901 902 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress); 903 904 usb_fill_int_urb(urb, data->udev, pipe, buf, size, 905 btusb_intr_complete, hdev, data->intr_ep->bInterval); 906 907 urb->transfer_flags |= URB_FREE_BUFFER; 908 909 usb_anchor_urb(urb, &data->intr_anchor); 910 911 err = usb_submit_urb(urb, mem_flags); 912 if (err < 0) { 913 if (err != -EPERM && err != -ENODEV) 914 bt_dev_err(hdev, "urb %p submission failed (%d)", 915 urb, -err); 916 usb_unanchor_urb(urb); 917 } 918 919 usb_free_urb(urb); 920 921 return err; 922 } 923 924 static void btusb_bulk_complete(struct urb *urb) 925 { 926 struct hci_dev *hdev = urb->context; 927 struct btusb_data *data = hci_get_drvdata(hdev); 928 int err; 929 930 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, 931 urb->actual_length); 932 933 if (!test_bit(HCI_RUNNING, &hdev->flags)) 934 return; 935 936 if (urb->status == 0) { 937 hdev->stat.byte_rx += urb->actual_length; 938 939 if (data->recv_bulk(data, urb->transfer_buffer, 940 urb->actual_length) < 0) { 941 bt_dev_err(hdev, "corrupted ACL packet"); 942 hdev->stat.err_rx++; 943 } 944 } else if (urb->status == -ENOENT) { 945 /* Avoid suspend failed when usb_kill_urb */ 946 return; 947 } 948 949 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags)) 950 return; 951 952 usb_anchor_urb(urb, &data->bulk_anchor); 953 usb_mark_last_busy(data->udev); 954 955 err = usb_submit_urb(urb, GFP_ATOMIC); 956 if (err < 0) { 957 /* -EPERM: urb is being killed; 958 * -ENODEV: device got disconnected 959 */ 960 if (err != -EPERM && err != -ENODEV) 961 bt_dev_err(hdev, "urb %p failed to resubmit (%d)", 962 urb, -err); 963 usb_unanchor_urb(urb); 964 } 965 } 966 967 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags) 968 { 969 struct btusb_data *data = hci_get_drvdata(hdev); 970 struct urb *urb; 971 unsigned char *buf; 972 unsigned int pipe; 973 int err, size = HCI_MAX_FRAME_SIZE; 974 975 BT_DBG("%s", hdev->name); 976 977 if (!data->bulk_rx_ep) 978 return -ENODEV; 979 980 urb = usb_alloc_urb(0, mem_flags); 981 if (!urb) 982 return -ENOMEM; 983 984 buf = kmalloc(size, mem_flags); 985 if (!buf) { 986 usb_free_urb(urb); 987 return -ENOMEM; 988 } 989 990 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress); 991 992 usb_fill_bulk_urb(urb, data->udev, pipe, buf, size, 993 btusb_bulk_complete, hdev); 994 995 urb->transfer_flags |= URB_FREE_BUFFER; 996 997 usb_mark_last_busy(data->udev); 998 usb_anchor_urb(urb, &data->bulk_anchor); 999 1000 err = usb_submit_urb(urb, mem_flags); 1001 if (err < 0) { 1002 if (err != -EPERM && err != -ENODEV) 1003 bt_dev_err(hdev, "urb %p submission failed (%d)", 1004 urb, -err); 1005 usb_unanchor_urb(urb); 1006 } 1007 1008 usb_free_urb(urb); 1009 1010 return err; 1011 } 1012 1013 static void btusb_isoc_complete(struct urb *urb) 1014 { 1015 struct hci_dev *hdev = urb->context; 1016 struct btusb_data *data = hci_get_drvdata(hdev); 1017 int i, err; 1018 1019 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, 1020 urb->actual_length); 1021 1022 if (!test_bit(HCI_RUNNING, &hdev->flags)) 1023 return; 1024 1025 if (urb->status == 0) { 1026 for (i = 0; i < urb->number_of_packets; i++) { 1027 unsigned int offset = urb->iso_frame_desc[i].offset; 1028 unsigned int length = urb->iso_frame_desc[i].actual_length; 1029 1030 if (urb->iso_frame_desc[i].status) 1031 continue; 1032 1033 hdev->stat.byte_rx += length; 1034 1035 if (btusb_recv_isoc(data, urb->transfer_buffer + offset, 1036 length) < 0) { 1037 bt_dev_err(hdev, "corrupted SCO packet"); 1038 hdev->stat.err_rx++; 1039 } 1040 } 1041 } else if (urb->status == -ENOENT) { 1042 /* Avoid suspend failed when usb_kill_urb */ 1043 return; 1044 } 1045 1046 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags)) 1047 return; 1048 1049 usb_anchor_urb(urb, &data->isoc_anchor); 1050 1051 err = usb_submit_urb(urb, GFP_ATOMIC); 1052 if (err < 0) { 1053 /* -EPERM: urb is being killed; 1054 * -ENODEV: device got disconnected 1055 */ 1056 if (err != -EPERM && err != -ENODEV) 1057 bt_dev_err(hdev, "urb %p failed to resubmit (%d)", 1058 urb, -err); 1059 usb_unanchor_urb(urb); 1060 } 1061 } 1062 1063 static inline void __fill_isoc_descriptor_msbc(struct urb *urb, int len, 1064 int mtu, struct btusb_data *data) 1065 { 1066 int i, offset = 0; 1067 unsigned int interval; 1068 1069 BT_DBG("len %d mtu %d", len, mtu); 1070 1071 /* For mSBC ALT 6 setting the host will send the packet at continuous 1072 * flow. As per core spec 5, vol 4, part B, table 2.1. For ALT setting 1073 * 6 the HCI PACKET INTERVAL should be 7.5ms for every usb packets. 1074 * To maintain the rate we send 63bytes of usb packets alternatively for 1075 * 7ms and 8ms to maintain the rate as 7.5ms. 1076 */ 1077 if (data->usb_alt6_packet_flow) { 1078 interval = 7; 1079 data->usb_alt6_packet_flow = false; 1080 } else { 1081 interval = 6; 1082 data->usb_alt6_packet_flow = true; 1083 } 1084 1085 for (i = 0; i < interval; i++) { 1086 urb->iso_frame_desc[i].offset = offset; 1087 urb->iso_frame_desc[i].length = offset; 1088 } 1089 1090 if (len && i < BTUSB_MAX_ISOC_FRAMES) { 1091 urb->iso_frame_desc[i].offset = offset; 1092 urb->iso_frame_desc[i].length = len; 1093 i++; 1094 } 1095 1096 urb->number_of_packets = i; 1097 } 1098 1099 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu) 1100 { 1101 int i, offset = 0; 1102 1103 BT_DBG("len %d mtu %d", len, mtu); 1104 1105 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu; 1106 i++, offset += mtu, len -= mtu) { 1107 urb->iso_frame_desc[i].offset = offset; 1108 urb->iso_frame_desc[i].length = mtu; 1109 } 1110 1111 if (len && i < BTUSB_MAX_ISOC_FRAMES) { 1112 urb->iso_frame_desc[i].offset = offset; 1113 urb->iso_frame_desc[i].length = len; 1114 i++; 1115 } 1116 1117 urb->number_of_packets = i; 1118 } 1119 1120 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags) 1121 { 1122 struct btusb_data *data = hci_get_drvdata(hdev); 1123 struct urb *urb; 1124 unsigned char *buf; 1125 unsigned int pipe; 1126 int err, size; 1127 1128 BT_DBG("%s", hdev->name); 1129 1130 if (!data->isoc_rx_ep) 1131 return -ENODEV; 1132 1133 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags); 1134 if (!urb) 1135 return -ENOMEM; 1136 1137 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) * 1138 BTUSB_MAX_ISOC_FRAMES; 1139 1140 buf = kmalloc(size, mem_flags); 1141 if (!buf) { 1142 usb_free_urb(urb); 1143 return -ENOMEM; 1144 } 1145 1146 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress); 1147 1148 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete, 1149 hdev, data->isoc_rx_ep->bInterval); 1150 1151 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP; 1152 1153 __fill_isoc_descriptor(urb, size, 1154 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize)); 1155 1156 usb_anchor_urb(urb, &data->isoc_anchor); 1157 1158 err = usb_submit_urb(urb, mem_flags); 1159 if (err < 0) { 1160 if (err != -EPERM && err != -ENODEV) 1161 bt_dev_err(hdev, "urb %p submission failed (%d)", 1162 urb, -err); 1163 usb_unanchor_urb(urb); 1164 } 1165 1166 usb_free_urb(urb); 1167 1168 return err; 1169 } 1170 1171 static void btusb_diag_complete(struct urb *urb) 1172 { 1173 struct hci_dev *hdev = urb->context; 1174 struct btusb_data *data = hci_get_drvdata(hdev); 1175 int err; 1176 1177 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, 1178 urb->actual_length); 1179 1180 if (urb->status == 0) { 1181 struct sk_buff *skb; 1182 1183 skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC); 1184 if (skb) { 1185 skb_put_data(skb, urb->transfer_buffer, 1186 urb->actual_length); 1187 hci_recv_diag(hdev, skb); 1188 } 1189 } else if (urb->status == -ENOENT) { 1190 /* Avoid suspend failed when usb_kill_urb */ 1191 return; 1192 } 1193 1194 if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags)) 1195 return; 1196 1197 usb_anchor_urb(urb, &data->diag_anchor); 1198 usb_mark_last_busy(data->udev); 1199 1200 err = usb_submit_urb(urb, GFP_ATOMIC); 1201 if (err < 0) { 1202 /* -EPERM: urb is being killed; 1203 * -ENODEV: device got disconnected 1204 */ 1205 if (err != -EPERM && err != -ENODEV) 1206 bt_dev_err(hdev, "urb %p failed to resubmit (%d)", 1207 urb, -err); 1208 usb_unanchor_urb(urb); 1209 } 1210 } 1211 1212 static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags) 1213 { 1214 struct btusb_data *data = hci_get_drvdata(hdev); 1215 struct urb *urb; 1216 unsigned char *buf; 1217 unsigned int pipe; 1218 int err, size = HCI_MAX_FRAME_SIZE; 1219 1220 BT_DBG("%s", hdev->name); 1221 1222 if (!data->diag_rx_ep) 1223 return -ENODEV; 1224 1225 urb = usb_alloc_urb(0, mem_flags); 1226 if (!urb) 1227 return -ENOMEM; 1228 1229 buf = kmalloc(size, mem_flags); 1230 if (!buf) { 1231 usb_free_urb(urb); 1232 return -ENOMEM; 1233 } 1234 1235 pipe = usb_rcvbulkpipe(data->udev, data->diag_rx_ep->bEndpointAddress); 1236 1237 usb_fill_bulk_urb(urb, data->udev, pipe, buf, size, 1238 btusb_diag_complete, hdev); 1239 1240 urb->transfer_flags |= URB_FREE_BUFFER; 1241 1242 usb_mark_last_busy(data->udev); 1243 usb_anchor_urb(urb, &data->diag_anchor); 1244 1245 err = usb_submit_urb(urb, mem_flags); 1246 if (err < 0) { 1247 if (err != -EPERM && err != -ENODEV) 1248 bt_dev_err(hdev, "urb %p submission failed (%d)", 1249 urb, -err); 1250 usb_unanchor_urb(urb); 1251 } 1252 1253 usb_free_urb(urb); 1254 1255 return err; 1256 } 1257 1258 static void btusb_tx_complete(struct urb *urb) 1259 { 1260 struct sk_buff *skb = urb->context; 1261 struct hci_dev *hdev = (struct hci_dev *)skb->dev; 1262 struct btusb_data *data = hci_get_drvdata(hdev); 1263 unsigned long flags; 1264 1265 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, 1266 urb->actual_length); 1267 1268 if (!test_bit(HCI_RUNNING, &hdev->flags)) 1269 goto done; 1270 1271 if (!urb->status) 1272 hdev->stat.byte_tx += urb->transfer_buffer_length; 1273 else 1274 hdev->stat.err_tx++; 1275 1276 done: 1277 spin_lock_irqsave(&data->txlock, flags); 1278 data->tx_in_flight--; 1279 spin_unlock_irqrestore(&data->txlock, flags); 1280 1281 kfree(urb->setup_packet); 1282 1283 kfree_skb(skb); 1284 } 1285 1286 static void btusb_isoc_tx_complete(struct urb *urb) 1287 { 1288 struct sk_buff *skb = urb->context; 1289 struct hci_dev *hdev = (struct hci_dev *)skb->dev; 1290 1291 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, 1292 urb->actual_length); 1293 1294 if (!test_bit(HCI_RUNNING, &hdev->flags)) 1295 goto done; 1296 1297 if (!urb->status) 1298 hdev->stat.byte_tx += urb->transfer_buffer_length; 1299 else 1300 hdev->stat.err_tx++; 1301 1302 done: 1303 kfree(urb->setup_packet); 1304 1305 kfree_skb(skb); 1306 } 1307 1308 static int btusb_open(struct hci_dev *hdev) 1309 { 1310 struct btusb_data *data = hci_get_drvdata(hdev); 1311 int err; 1312 1313 BT_DBG("%s", hdev->name); 1314 1315 err = usb_autopm_get_interface(data->intf); 1316 if (err < 0) 1317 return err; 1318 1319 /* Patching USB firmware files prior to starting any URBs of HCI path 1320 * It is more safe to use USB bulk channel for downloading USB patch 1321 */ 1322 if (data->setup_on_usb) { 1323 err = data->setup_on_usb(hdev); 1324 if (err < 0) 1325 goto setup_fail; 1326 } 1327 1328 data->intf->needs_remote_wakeup = 1; 1329 1330 /* Disable device remote wakeup when host is suspended 1331 * For Realtek chips, global suspend without 1332 * SET_FEATURE (DEVICE_REMOTE_WAKEUP) can save more power in device. 1333 */ 1334 if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags)) 1335 device_wakeup_disable(&data->udev->dev); 1336 1337 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags)) 1338 goto done; 1339 1340 err = btusb_submit_intr_urb(hdev, GFP_KERNEL); 1341 if (err < 0) 1342 goto failed; 1343 1344 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL); 1345 if (err < 0) { 1346 usb_kill_anchored_urbs(&data->intr_anchor); 1347 goto failed; 1348 } 1349 1350 set_bit(BTUSB_BULK_RUNNING, &data->flags); 1351 btusb_submit_bulk_urb(hdev, GFP_KERNEL); 1352 1353 if (data->diag) { 1354 if (!btusb_submit_diag_urb(hdev, GFP_KERNEL)) 1355 set_bit(BTUSB_DIAG_RUNNING, &data->flags); 1356 } 1357 1358 done: 1359 usb_autopm_put_interface(data->intf); 1360 return 0; 1361 1362 failed: 1363 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 1364 setup_fail: 1365 usb_autopm_put_interface(data->intf); 1366 return err; 1367 } 1368 1369 static void btusb_stop_traffic(struct btusb_data *data) 1370 { 1371 usb_kill_anchored_urbs(&data->intr_anchor); 1372 usb_kill_anchored_urbs(&data->bulk_anchor); 1373 usb_kill_anchored_urbs(&data->isoc_anchor); 1374 usb_kill_anchored_urbs(&data->diag_anchor); 1375 usb_kill_anchored_urbs(&data->ctrl_anchor); 1376 } 1377 1378 static int btusb_close(struct hci_dev *hdev) 1379 { 1380 struct btusb_data *data = hci_get_drvdata(hdev); 1381 int err; 1382 1383 BT_DBG("%s", hdev->name); 1384 1385 cancel_work_sync(&data->work); 1386 cancel_work_sync(&data->waker); 1387 1388 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1389 clear_bit(BTUSB_BULK_RUNNING, &data->flags); 1390 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 1391 clear_bit(BTUSB_DIAG_RUNNING, &data->flags); 1392 1393 btusb_stop_traffic(data); 1394 btusb_free_frags(data); 1395 1396 err = usb_autopm_get_interface(data->intf); 1397 if (err < 0) 1398 goto failed; 1399 1400 data->intf->needs_remote_wakeup = 0; 1401 1402 /* Enable remote wake up for auto-suspend */ 1403 if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags)) 1404 data->intf->needs_remote_wakeup = 1; 1405 1406 usb_autopm_put_interface(data->intf); 1407 1408 failed: 1409 usb_scuttle_anchored_urbs(&data->deferred); 1410 return 0; 1411 } 1412 1413 static int btusb_flush(struct hci_dev *hdev) 1414 { 1415 struct btusb_data *data = hci_get_drvdata(hdev); 1416 1417 BT_DBG("%s", hdev->name); 1418 1419 usb_kill_anchored_urbs(&data->tx_anchor); 1420 btusb_free_frags(data); 1421 1422 return 0; 1423 } 1424 1425 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb) 1426 { 1427 struct btusb_data *data = hci_get_drvdata(hdev); 1428 struct usb_ctrlrequest *dr; 1429 struct urb *urb; 1430 unsigned int pipe; 1431 1432 urb = usb_alloc_urb(0, GFP_KERNEL); 1433 if (!urb) 1434 return ERR_PTR(-ENOMEM); 1435 1436 dr = kmalloc(sizeof(*dr), GFP_KERNEL); 1437 if (!dr) { 1438 usb_free_urb(urb); 1439 return ERR_PTR(-ENOMEM); 1440 } 1441 1442 dr->bRequestType = data->cmdreq_type; 1443 dr->bRequest = data->cmdreq; 1444 dr->wIndex = 0; 1445 dr->wValue = 0; 1446 dr->wLength = __cpu_to_le16(skb->len); 1447 1448 pipe = usb_sndctrlpipe(data->udev, 0x00); 1449 1450 usb_fill_control_urb(urb, data->udev, pipe, (void *)dr, 1451 skb->data, skb->len, btusb_tx_complete, skb); 1452 1453 skb->dev = (void *)hdev; 1454 1455 return urb; 1456 } 1457 1458 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb) 1459 { 1460 struct btusb_data *data = hci_get_drvdata(hdev); 1461 struct urb *urb; 1462 unsigned int pipe; 1463 1464 if (!data->bulk_tx_ep) 1465 return ERR_PTR(-ENODEV); 1466 1467 urb = usb_alloc_urb(0, GFP_KERNEL); 1468 if (!urb) 1469 return ERR_PTR(-ENOMEM); 1470 1471 pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress); 1472 1473 usb_fill_bulk_urb(urb, data->udev, pipe, 1474 skb->data, skb->len, btusb_tx_complete, skb); 1475 1476 skb->dev = (void *)hdev; 1477 1478 return urb; 1479 } 1480 1481 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb) 1482 { 1483 struct btusb_data *data = hci_get_drvdata(hdev); 1484 struct urb *urb; 1485 unsigned int pipe; 1486 1487 if (!data->isoc_tx_ep) 1488 return ERR_PTR(-ENODEV); 1489 1490 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL); 1491 if (!urb) 1492 return ERR_PTR(-ENOMEM); 1493 1494 pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress); 1495 1496 usb_fill_int_urb(urb, data->udev, pipe, 1497 skb->data, skb->len, btusb_isoc_tx_complete, 1498 skb, data->isoc_tx_ep->bInterval); 1499 1500 urb->transfer_flags = URB_ISO_ASAP; 1501 1502 if (data->isoc_altsetting == 6) 1503 __fill_isoc_descriptor_msbc(urb, skb->len, 1504 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize), 1505 data); 1506 else 1507 __fill_isoc_descriptor(urb, skb->len, 1508 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize)); 1509 skb->dev = (void *)hdev; 1510 1511 return urb; 1512 } 1513 1514 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb) 1515 { 1516 struct btusb_data *data = hci_get_drvdata(hdev); 1517 int err; 1518 1519 usb_anchor_urb(urb, &data->tx_anchor); 1520 1521 err = usb_submit_urb(urb, GFP_KERNEL); 1522 if (err < 0) { 1523 if (err != -EPERM && err != -ENODEV) 1524 bt_dev_err(hdev, "urb %p submission failed (%d)", 1525 urb, -err); 1526 kfree(urb->setup_packet); 1527 usb_unanchor_urb(urb); 1528 } else { 1529 usb_mark_last_busy(data->udev); 1530 } 1531 1532 usb_free_urb(urb); 1533 return err; 1534 } 1535 1536 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb) 1537 { 1538 struct btusb_data *data = hci_get_drvdata(hdev); 1539 unsigned long flags; 1540 bool suspending; 1541 1542 spin_lock_irqsave(&data->txlock, flags); 1543 suspending = test_bit(BTUSB_SUSPENDING, &data->flags); 1544 if (!suspending) 1545 data->tx_in_flight++; 1546 spin_unlock_irqrestore(&data->txlock, flags); 1547 1548 if (!suspending) 1549 return submit_tx_urb(hdev, urb); 1550 1551 usb_anchor_urb(urb, &data->deferred); 1552 schedule_work(&data->waker); 1553 1554 usb_free_urb(urb); 1555 return 0; 1556 } 1557 1558 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb) 1559 { 1560 struct urb *urb; 1561 1562 BT_DBG("%s", hdev->name); 1563 1564 switch (hci_skb_pkt_type(skb)) { 1565 case HCI_COMMAND_PKT: 1566 urb = alloc_ctrl_urb(hdev, skb); 1567 if (IS_ERR(urb)) 1568 return PTR_ERR(urb); 1569 1570 hdev->stat.cmd_tx++; 1571 return submit_or_queue_tx_urb(hdev, urb); 1572 1573 case HCI_ACLDATA_PKT: 1574 urb = alloc_bulk_urb(hdev, skb); 1575 if (IS_ERR(urb)) 1576 return PTR_ERR(urb); 1577 1578 hdev->stat.acl_tx++; 1579 return submit_or_queue_tx_urb(hdev, urb); 1580 1581 case HCI_SCODATA_PKT: 1582 if (hci_conn_num(hdev, SCO_LINK) < 1) 1583 return -ENODEV; 1584 1585 urb = alloc_isoc_urb(hdev, skb); 1586 if (IS_ERR(urb)) 1587 return PTR_ERR(urb); 1588 1589 hdev->stat.sco_tx++; 1590 return submit_tx_urb(hdev, urb); 1591 } 1592 1593 return -EILSEQ; 1594 } 1595 1596 static void btusb_notify(struct hci_dev *hdev, unsigned int evt) 1597 { 1598 struct btusb_data *data = hci_get_drvdata(hdev); 1599 1600 BT_DBG("%s evt %d", hdev->name, evt); 1601 1602 if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) { 1603 data->sco_num = hci_conn_num(hdev, SCO_LINK); 1604 data->air_mode = evt; 1605 schedule_work(&data->work); 1606 } 1607 } 1608 1609 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting) 1610 { 1611 struct btusb_data *data = hci_get_drvdata(hdev); 1612 struct usb_interface *intf = data->isoc; 1613 struct usb_endpoint_descriptor *ep_desc; 1614 int i, err; 1615 1616 if (!data->isoc) 1617 return -ENODEV; 1618 1619 err = usb_set_interface(data->udev, data->isoc_ifnum, altsetting); 1620 if (err < 0) { 1621 bt_dev_err(hdev, "setting interface failed (%d)", -err); 1622 return err; 1623 } 1624 1625 data->isoc_altsetting = altsetting; 1626 1627 data->isoc_tx_ep = NULL; 1628 data->isoc_rx_ep = NULL; 1629 1630 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { 1631 ep_desc = &intf->cur_altsetting->endpoint[i].desc; 1632 1633 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) { 1634 data->isoc_tx_ep = ep_desc; 1635 continue; 1636 } 1637 1638 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) { 1639 data->isoc_rx_ep = ep_desc; 1640 continue; 1641 } 1642 } 1643 1644 if (!data->isoc_tx_ep || !data->isoc_rx_ep) { 1645 bt_dev_err(hdev, "invalid SCO descriptors"); 1646 return -ENODEV; 1647 } 1648 1649 return 0; 1650 } 1651 1652 static int btusb_switch_alt_setting(struct hci_dev *hdev, int new_alts) 1653 { 1654 struct btusb_data *data = hci_get_drvdata(hdev); 1655 int err; 1656 1657 if (data->isoc_altsetting != new_alts) { 1658 unsigned long flags; 1659 1660 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1661 usb_kill_anchored_urbs(&data->isoc_anchor); 1662 1663 /* When isochronous alternate setting needs to be 1664 * changed, because SCO connection has been added 1665 * or removed, a packet fragment may be left in the 1666 * reassembling state. This could lead to wrongly 1667 * assembled fragments. 1668 * 1669 * Clear outstanding fragment when selecting a new 1670 * alternate setting. 1671 */ 1672 spin_lock_irqsave(&data->rxlock, flags); 1673 kfree_skb(data->sco_skb); 1674 data->sco_skb = NULL; 1675 spin_unlock_irqrestore(&data->rxlock, flags); 1676 1677 err = __set_isoc_interface(hdev, new_alts); 1678 if (err < 0) 1679 return err; 1680 } 1681 1682 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) { 1683 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0) 1684 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1685 else 1686 btusb_submit_isoc_urb(hdev, GFP_KERNEL); 1687 } 1688 1689 return 0; 1690 } 1691 1692 static struct usb_host_interface *btusb_find_altsetting(struct btusb_data *data, 1693 int alt) 1694 { 1695 struct usb_interface *intf = data->isoc; 1696 int i; 1697 1698 BT_DBG("Looking for Alt no :%d", alt); 1699 1700 if (!intf) 1701 return NULL; 1702 1703 for (i = 0; i < intf->num_altsetting; i++) { 1704 if (intf->altsetting[i].desc.bAlternateSetting == alt) 1705 return &intf->altsetting[i]; 1706 } 1707 1708 return NULL; 1709 } 1710 1711 static void btusb_work(struct work_struct *work) 1712 { 1713 struct btusb_data *data = container_of(work, struct btusb_data, work); 1714 struct hci_dev *hdev = data->hdev; 1715 int new_alts = 0; 1716 int err; 1717 1718 if (data->sco_num > 0) { 1719 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) { 1720 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf); 1721 if (err < 0) { 1722 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1723 usb_kill_anchored_urbs(&data->isoc_anchor); 1724 return; 1725 } 1726 1727 set_bit(BTUSB_DID_ISO_RESUME, &data->flags); 1728 } 1729 1730 if (data->air_mode == HCI_NOTIFY_ENABLE_SCO_CVSD) { 1731 if (hdev->voice_setting & 0x0020) { 1732 static const int alts[3] = { 2, 4, 5 }; 1733 1734 new_alts = alts[data->sco_num - 1]; 1735 } else { 1736 new_alts = data->sco_num; 1737 } 1738 } else if (data->air_mode == HCI_NOTIFY_ENABLE_SCO_TRANSP) { 1739 /* Check if Alt 6 is supported for Transparent audio */ 1740 if (btusb_find_altsetting(data, 6)) { 1741 data->usb_alt6_packet_flow = true; 1742 new_alts = 6; 1743 } else if (test_bit(BTUSB_USE_ALT1_FOR_WBS, &data->flags)) { 1744 new_alts = 1; 1745 } else { 1746 bt_dev_err(hdev, "Device does not support ALT setting 6"); 1747 } 1748 } 1749 1750 if (btusb_switch_alt_setting(hdev, new_alts) < 0) 1751 bt_dev_err(hdev, "set USB alt:(%d) failed!", new_alts); 1752 } else { 1753 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1754 usb_kill_anchored_urbs(&data->isoc_anchor); 1755 1756 __set_isoc_interface(hdev, 0); 1757 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags)) 1758 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf); 1759 } 1760 } 1761 1762 static void btusb_waker(struct work_struct *work) 1763 { 1764 struct btusb_data *data = container_of(work, struct btusb_data, waker); 1765 int err; 1766 1767 err = usb_autopm_get_interface(data->intf); 1768 if (err < 0) 1769 return; 1770 1771 usb_autopm_put_interface(data->intf); 1772 } 1773 1774 static int btusb_setup_bcm92035(struct hci_dev *hdev) 1775 { 1776 struct sk_buff *skb; 1777 u8 val = 0x00; 1778 1779 BT_DBG("%s", hdev->name); 1780 1781 skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT); 1782 if (IS_ERR(skb)) 1783 bt_dev_err(hdev, "BCM92035 command failed (%ld)", PTR_ERR(skb)); 1784 else 1785 kfree_skb(skb); 1786 1787 return 0; 1788 } 1789 1790 static int btusb_setup_csr(struct hci_dev *hdev) 1791 { 1792 struct btusb_data *data = hci_get_drvdata(hdev); 1793 u16 bcdDevice = le16_to_cpu(data->udev->descriptor.bcdDevice); 1794 struct hci_rp_read_local_version *rp; 1795 struct sk_buff *skb; 1796 bool is_fake = false; 1797 int ret; 1798 1799 BT_DBG("%s", hdev->name); 1800 1801 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL, 1802 HCI_INIT_TIMEOUT); 1803 if (IS_ERR(skb)) { 1804 int err = PTR_ERR(skb); 1805 bt_dev_err(hdev, "CSR: Local version failed (%d)", err); 1806 return err; 1807 } 1808 1809 if (skb->len != sizeof(struct hci_rp_read_local_version)) { 1810 bt_dev_err(hdev, "CSR: Local version length mismatch"); 1811 kfree_skb(skb); 1812 return -EIO; 1813 } 1814 1815 rp = (struct hci_rp_read_local_version *)skb->data; 1816 1817 /* Detect a wide host of Chinese controllers that aren't CSR. 1818 * 1819 * Known fake bcdDevices: 0x0100, 0x0134, 0x1915, 0x2520, 0x7558, 0x8891 1820 * 1821 * The main thing they have in common is that these are really popular low-cost 1822 * options that support newer Bluetooth versions but rely on heavy VID/PID 1823 * squatting of this poor old Bluetooth 1.1 device. Even sold as such. 1824 * 1825 * We detect actual CSR devices by checking that the HCI manufacturer code 1826 * is Cambridge Silicon Radio (10) and ensuring that LMP sub-version and 1827 * HCI rev values always match. As they both store the firmware number. 1828 */ 1829 if (le16_to_cpu(rp->manufacturer) != 10 || 1830 le16_to_cpu(rp->hci_rev) != le16_to_cpu(rp->lmp_subver)) 1831 is_fake = true; 1832 1833 /* Known legit CSR firmware build numbers and their supported BT versions: 1834 * - 1.1 (0x1) -> 0x0073, 0x020d, 0x033c, 0x034e 1835 * - 1.2 (0x2) -> 0x04d9, 0x0529 1836 * - 2.0 (0x3) -> 0x07a6, 0x07ad, 0x0c5c 1837 * - 2.1 (0x4) -> 0x149c, 0x1735, 0x1899 (0x1899 is a BlueCore4-External) 1838 * - 4.0 (0x6) -> 0x1d86, 0x2031, 0x22bb 1839 * 1840 * e.g. Real CSR dongles with LMP subversion 0x73 are old enough that 1841 * support BT 1.1 only; so it's a dead giveaway when some 1842 * third-party BT 4.0 dongle reuses it. 1843 */ 1844 else if (le16_to_cpu(rp->lmp_subver) <= 0x034e && 1845 le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_1_1) 1846 is_fake = true; 1847 1848 else if (le16_to_cpu(rp->lmp_subver) <= 0x0529 && 1849 le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_1_2) 1850 is_fake = true; 1851 1852 else if (le16_to_cpu(rp->lmp_subver) <= 0x0c5c && 1853 le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_2_0) 1854 is_fake = true; 1855 1856 else if (le16_to_cpu(rp->lmp_subver) <= 0x1899 && 1857 le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_2_1) 1858 is_fake = true; 1859 1860 else if (le16_to_cpu(rp->lmp_subver) <= 0x22bb && 1861 le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_4_0) 1862 is_fake = true; 1863 1864 /* Other clones which beat all the above checks */ 1865 else if (bcdDevice == 0x0134 && 1866 le16_to_cpu(rp->lmp_subver) == 0x0c5c && 1867 le16_to_cpu(rp->hci_ver) == BLUETOOTH_VER_2_0) 1868 is_fake = true; 1869 1870 if (is_fake) { 1871 bt_dev_warn(hdev, "CSR: Unbranded CSR clone detected; adding workarounds..."); 1872 1873 /* Generally these clones have big discrepancies between 1874 * advertised features and what's actually supported. 1875 * Probably will need to be expanded in the future; 1876 * without these the controller will lock up. 1877 */ 1878 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks); 1879 set_bit(HCI_QUIRK_BROKEN_ERR_DATA_REPORTING, &hdev->quirks); 1880 1881 /* Clear the reset quirk since this is not an actual 1882 * early Bluetooth 1.1 device from CSR. 1883 */ 1884 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); 1885 clear_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); 1886 1887 /* 1888 * Special workaround for clones with a Barrot 8041a02 chip, 1889 * these clones are really messed-up: 1890 * 1. Their bulk rx endpoint will never report any data unless 1891 * the device was suspended at least once (yes really). 1892 * 2. They will not wakeup when autosuspended and receiving data 1893 * on their bulk rx endpoint from e.g. a keyboard or mouse 1894 * (IOW remote-wakeup support is broken for the bulk endpoint). 1895 * 1896 * To fix 1. enable runtime-suspend, force-suspend the 1897 * hci and then wake-it up by disabling runtime-suspend. 1898 * 1899 * To fix 2. clear the hci's can_wake flag, this way the hci 1900 * will still be autosuspended when it is not open. 1901 */ 1902 if (bcdDevice == 0x8891 && 1903 le16_to_cpu(rp->lmp_subver) == 0x1012 && 1904 le16_to_cpu(rp->hci_rev) == 0x0810 && 1905 le16_to_cpu(rp->hci_ver) == BLUETOOTH_VER_4_0) { 1906 bt_dev_warn(hdev, "CSR: detected a fake CSR dongle using a Barrot 8041a02 chip, this chip is very buggy and may have issues\n"); 1907 1908 pm_runtime_allow(&data->udev->dev); 1909 1910 ret = pm_runtime_suspend(&data->udev->dev); 1911 if (ret >= 0) 1912 msleep(200); 1913 else 1914 bt_dev_err(hdev, "Failed to suspend the device for Barrot 8041a02 receive-issue workaround\n"); 1915 1916 pm_runtime_forbid(&data->udev->dev); 1917 1918 device_set_wakeup_capable(&data->udev->dev, false); 1919 /* Re-enable autosuspend if this was requested */ 1920 if (enable_autosuspend) 1921 usb_enable_autosuspend(data->udev); 1922 } 1923 } 1924 1925 kfree_skb(skb); 1926 1927 return 0; 1928 } 1929 1930 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev, 1931 struct intel_version *ver) 1932 { 1933 const struct firmware *fw; 1934 char fwname[64]; 1935 int ret; 1936 1937 snprintf(fwname, sizeof(fwname), 1938 "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq", 1939 ver->hw_platform, ver->hw_variant, ver->hw_revision, 1940 ver->fw_variant, ver->fw_revision, ver->fw_build_num, 1941 ver->fw_build_ww, ver->fw_build_yy); 1942 1943 ret = request_firmware(&fw, fwname, &hdev->dev); 1944 if (ret < 0) { 1945 if (ret == -EINVAL) { 1946 bt_dev_err(hdev, "Intel firmware file request failed (%d)", 1947 ret); 1948 return NULL; 1949 } 1950 1951 bt_dev_err(hdev, "failed to open Intel firmware file: %s (%d)", 1952 fwname, ret); 1953 1954 /* If the correct firmware patch file is not found, use the 1955 * default firmware patch file instead 1956 */ 1957 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq", 1958 ver->hw_platform, ver->hw_variant); 1959 if (request_firmware(&fw, fwname, &hdev->dev) < 0) { 1960 bt_dev_err(hdev, "failed to open default fw file: %s", 1961 fwname); 1962 return NULL; 1963 } 1964 } 1965 1966 bt_dev_info(hdev, "Intel Bluetooth firmware file: %s", fwname); 1967 1968 return fw; 1969 } 1970 1971 static int btusb_setup_intel_patching(struct hci_dev *hdev, 1972 const struct firmware *fw, 1973 const u8 **fw_ptr, int *disable_patch) 1974 { 1975 struct sk_buff *skb; 1976 struct hci_command_hdr *cmd; 1977 const u8 *cmd_param; 1978 struct hci_event_hdr *evt = NULL; 1979 const u8 *evt_param = NULL; 1980 int remain = fw->size - (*fw_ptr - fw->data); 1981 1982 /* The first byte indicates the types of the patch command or event. 1983 * 0x01 means HCI command and 0x02 is HCI event. If the first bytes 1984 * in the current firmware buffer doesn't start with 0x01 or 1985 * the size of remain buffer is smaller than HCI command header, 1986 * the firmware file is corrupted and it should stop the patching 1987 * process. 1988 */ 1989 if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) { 1990 bt_dev_err(hdev, "Intel fw corrupted: invalid cmd read"); 1991 return -EINVAL; 1992 } 1993 (*fw_ptr)++; 1994 remain--; 1995 1996 cmd = (struct hci_command_hdr *)(*fw_ptr); 1997 *fw_ptr += sizeof(*cmd); 1998 remain -= sizeof(*cmd); 1999 2000 /* Ensure that the remain firmware data is long enough than the length 2001 * of command parameter. If not, the firmware file is corrupted. 2002 */ 2003 if (remain < cmd->plen) { 2004 bt_dev_err(hdev, "Intel fw corrupted: invalid cmd len"); 2005 return -EFAULT; 2006 } 2007 2008 /* If there is a command that loads a patch in the firmware 2009 * file, then enable the patch upon success, otherwise just 2010 * disable the manufacturer mode, for example patch activation 2011 * is not required when the default firmware patch file is used 2012 * because there are no patch data to load. 2013 */ 2014 if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e) 2015 *disable_patch = 0; 2016 2017 cmd_param = *fw_ptr; 2018 *fw_ptr += cmd->plen; 2019 remain -= cmd->plen; 2020 2021 /* This reads the expected events when the above command is sent to the 2022 * device. Some vendor commands expects more than one events, for 2023 * example command status event followed by vendor specific event. 2024 * For this case, it only keeps the last expected event. so the command 2025 * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of 2026 * last expected event. 2027 */ 2028 while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) { 2029 (*fw_ptr)++; 2030 remain--; 2031 2032 evt = (struct hci_event_hdr *)(*fw_ptr); 2033 *fw_ptr += sizeof(*evt); 2034 remain -= sizeof(*evt); 2035 2036 if (remain < evt->plen) { 2037 bt_dev_err(hdev, "Intel fw corrupted: invalid evt len"); 2038 return -EFAULT; 2039 } 2040 2041 evt_param = *fw_ptr; 2042 *fw_ptr += evt->plen; 2043 remain -= evt->plen; 2044 } 2045 2046 /* Every HCI commands in the firmware file has its correspond event. 2047 * If event is not found or remain is smaller than zero, the firmware 2048 * file is corrupted. 2049 */ 2050 if (!evt || !evt_param || remain < 0) { 2051 bt_dev_err(hdev, "Intel fw corrupted: invalid evt read"); 2052 return -EFAULT; 2053 } 2054 2055 skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen, 2056 cmd_param, evt->evt, HCI_INIT_TIMEOUT); 2057 if (IS_ERR(skb)) { 2058 bt_dev_err(hdev, "sending Intel patch command (0x%4.4x) failed (%ld)", 2059 cmd->opcode, PTR_ERR(skb)); 2060 return PTR_ERR(skb); 2061 } 2062 2063 /* It ensures that the returned event matches the event data read from 2064 * the firmware file. At fist, it checks the length and then 2065 * the contents of the event. 2066 */ 2067 if (skb->len != evt->plen) { 2068 bt_dev_err(hdev, "mismatch event length (opcode 0x%4.4x)", 2069 le16_to_cpu(cmd->opcode)); 2070 kfree_skb(skb); 2071 return -EFAULT; 2072 } 2073 2074 if (memcmp(skb->data, evt_param, evt->plen)) { 2075 bt_dev_err(hdev, "mismatch event parameter (opcode 0x%4.4x)", 2076 le16_to_cpu(cmd->opcode)); 2077 kfree_skb(skb); 2078 return -EFAULT; 2079 } 2080 kfree_skb(skb); 2081 2082 return 0; 2083 } 2084 2085 static int btusb_setup_intel(struct hci_dev *hdev) 2086 { 2087 struct sk_buff *skb; 2088 const struct firmware *fw; 2089 const u8 *fw_ptr; 2090 int disable_patch, err; 2091 struct intel_version ver; 2092 2093 BT_DBG("%s", hdev->name); 2094 2095 /* The controller has a bug with the first HCI command sent to it 2096 * returning number of completed commands as zero. This would stall the 2097 * command processing in the Bluetooth core. 2098 * 2099 * As a workaround, send HCI Reset command first which will reset the 2100 * number of completed commands and allow normal command processing 2101 * from now on. 2102 */ 2103 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT); 2104 if (IS_ERR(skb)) { 2105 bt_dev_err(hdev, "sending initial HCI reset command failed (%ld)", 2106 PTR_ERR(skb)); 2107 return PTR_ERR(skb); 2108 } 2109 kfree_skb(skb); 2110 2111 /* Read Intel specific controller version first to allow selection of 2112 * which firmware file to load. 2113 * 2114 * The returned information are hardware variant and revision plus 2115 * firmware variant, revision and build number. 2116 */ 2117 err = btintel_read_version(hdev, &ver); 2118 if (err) 2119 return err; 2120 2121 bt_dev_info(hdev, "read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x", 2122 ver.hw_platform, ver.hw_variant, ver.hw_revision, 2123 ver.fw_variant, ver.fw_revision, ver.fw_build_num, 2124 ver.fw_build_ww, ver.fw_build_yy, ver.fw_patch_num); 2125 2126 /* fw_patch_num indicates the version of patch the device currently 2127 * have. If there is no patch data in the device, it is always 0x00. 2128 * So, if it is other than 0x00, no need to patch the device again. 2129 */ 2130 if (ver.fw_patch_num) { 2131 bt_dev_info(hdev, "Intel device is already patched. " 2132 "patch num: %02x", ver.fw_patch_num); 2133 goto complete; 2134 } 2135 2136 /* Opens the firmware patch file based on the firmware version read 2137 * from the controller. If it fails to open the matching firmware 2138 * patch file, it tries to open the default firmware patch file. 2139 * If no patch file is found, allow the device to operate without 2140 * a patch. 2141 */ 2142 fw = btusb_setup_intel_get_fw(hdev, &ver); 2143 if (!fw) 2144 goto complete; 2145 fw_ptr = fw->data; 2146 2147 /* Enable the manufacturer mode of the controller. 2148 * Only while this mode is enabled, the driver can download the 2149 * firmware patch data and configuration parameters. 2150 */ 2151 err = btintel_enter_mfg(hdev); 2152 if (err) { 2153 release_firmware(fw); 2154 return err; 2155 } 2156 2157 disable_patch = 1; 2158 2159 /* The firmware data file consists of list of Intel specific HCI 2160 * commands and its expected events. The first byte indicates the 2161 * type of the message, either HCI command or HCI event. 2162 * 2163 * It reads the command and its expected event from the firmware file, 2164 * and send to the controller. Once __hci_cmd_sync_ev() returns, 2165 * the returned event is compared with the event read from the firmware 2166 * file and it will continue until all the messages are downloaded to 2167 * the controller. 2168 * 2169 * Once the firmware patching is completed successfully, 2170 * the manufacturer mode is disabled with reset and activating the 2171 * downloaded patch. 2172 * 2173 * If the firmware patching fails, the manufacturer mode is 2174 * disabled with reset and deactivating the patch. 2175 * 2176 * If the default patch file is used, no reset is done when disabling 2177 * the manufacturer. 2178 */ 2179 while (fw->size > fw_ptr - fw->data) { 2180 int ret; 2181 2182 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr, 2183 &disable_patch); 2184 if (ret < 0) 2185 goto exit_mfg_deactivate; 2186 } 2187 2188 release_firmware(fw); 2189 2190 if (disable_patch) 2191 goto exit_mfg_disable; 2192 2193 /* Patching completed successfully and disable the manufacturer mode 2194 * with reset and activate the downloaded firmware patches. 2195 */ 2196 err = btintel_exit_mfg(hdev, true, true); 2197 if (err) 2198 return err; 2199 2200 /* Need build number for downloaded fw patches in 2201 * every power-on boot 2202 */ 2203 err = btintel_read_version(hdev, &ver); 2204 if (err) 2205 return err; 2206 bt_dev_info(hdev, "Intel BT fw patch 0x%02x completed & activated", 2207 ver.fw_patch_num); 2208 2209 goto complete; 2210 2211 exit_mfg_disable: 2212 /* Disable the manufacturer mode without reset */ 2213 err = btintel_exit_mfg(hdev, false, false); 2214 if (err) 2215 return err; 2216 2217 bt_dev_info(hdev, "Intel firmware patch completed"); 2218 2219 goto complete; 2220 2221 exit_mfg_deactivate: 2222 release_firmware(fw); 2223 2224 /* Patching failed. Disable the manufacturer mode with reset and 2225 * deactivate the downloaded firmware patches. 2226 */ 2227 err = btintel_exit_mfg(hdev, true, false); 2228 if (err) 2229 return err; 2230 2231 bt_dev_info(hdev, "Intel firmware patch completed and deactivated"); 2232 2233 complete: 2234 /* Set the event mask for Intel specific vendor events. This enables 2235 * a few extra events that are useful during general operation. 2236 */ 2237 btintel_set_event_mask_mfg(hdev, false); 2238 2239 btintel_check_bdaddr(hdev); 2240 return 0; 2241 } 2242 2243 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode) 2244 { 2245 struct sk_buff *skb; 2246 struct hci_event_hdr *hdr; 2247 struct hci_ev_cmd_complete *evt; 2248 2249 skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_KERNEL); 2250 if (!skb) 2251 return -ENOMEM; 2252 2253 hdr = skb_put(skb, sizeof(*hdr)); 2254 hdr->evt = HCI_EV_CMD_COMPLETE; 2255 hdr->plen = sizeof(*evt) + 1; 2256 2257 evt = skb_put(skb, sizeof(*evt)); 2258 evt->ncmd = 0x01; 2259 evt->opcode = cpu_to_le16(opcode); 2260 2261 skb_put_u8(skb, 0x00); 2262 2263 hci_skb_pkt_type(skb) = HCI_EVENT_PKT; 2264 2265 return hci_recv_frame(hdev, skb); 2266 } 2267 2268 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer, 2269 int count) 2270 { 2271 /* When the device is in bootloader mode, then it can send 2272 * events via the bulk endpoint. These events are treated the 2273 * same way as the ones received from the interrupt endpoint. 2274 */ 2275 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) 2276 return btusb_recv_intr(data, buffer, count); 2277 2278 return btusb_recv_bulk(data, buffer, count); 2279 } 2280 2281 static void btusb_intel_bootup(struct btusb_data *data, const void *ptr, 2282 unsigned int len) 2283 { 2284 const struct intel_bootup *evt = ptr; 2285 2286 if (len != sizeof(*evt)) 2287 return; 2288 2289 if (test_and_clear_bit(BTUSB_BOOTING, &data->flags)) 2290 wake_up_bit(&data->flags, BTUSB_BOOTING); 2291 } 2292 2293 static void btusb_intel_secure_send_result(struct btusb_data *data, 2294 const void *ptr, unsigned int len) 2295 { 2296 const struct intel_secure_send_result *evt = ptr; 2297 2298 if (len != sizeof(*evt)) 2299 return; 2300 2301 if (evt->result) 2302 set_bit(BTUSB_FIRMWARE_FAILED, &data->flags); 2303 2304 if (test_and_clear_bit(BTUSB_DOWNLOADING, &data->flags) && 2305 test_bit(BTUSB_FIRMWARE_LOADED, &data->flags)) 2306 wake_up_bit(&data->flags, BTUSB_DOWNLOADING); 2307 } 2308 2309 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb) 2310 { 2311 struct btusb_data *data = hci_get_drvdata(hdev); 2312 2313 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) { 2314 struct hci_event_hdr *hdr = (void *)skb->data; 2315 2316 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff && 2317 hdr->plen > 0) { 2318 const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1; 2319 unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1; 2320 2321 switch (skb->data[2]) { 2322 case 0x02: 2323 /* When switching to the operational firmware 2324 * the device sends a vendor specific event 2325 * indicating that the bootup completed. 2326 */ 2327 btusb_intel_bootup(data, ptr, len); 2328 break; 2329 case 0x06: 2330 /* When the firmware loading completes the 2331 * device sends out a vendor specific event 2332 * indicating the result of the firmware 2333 * loading. 2334 */ 2335 btusb_intel_secure_send_result(data, ptr, len); 2336 break; 2337 } 2338 } 2339 } 2340 2341 return hci_recv_frame(hdev, skb); 2342 } 2343 2344 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb) 2345 { 2346 struct btusb_data *data = hci_get_drvdata(hdev); 2347 struct urb *urb; 2348 2349 BT_DBG("%s", hdev->name); 2350 2351 switch (hci_skb_pkt_type(skb)) { 2352 case HCI_COMMAND_PKT: 2353 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) { 2354 struct hci_command_hdr *cmd = (void *)skb->data; 2355 __u16 opcode = le16_to_cpu(cmd->opcode); 2356 2357 /* When in bootloader mode and the command 0xfc09 2358 * is received, it needs to be send down the 2359 * bulk endpoint. So allocate a bulk URB instead. 2360 */ 2361 if (opcode == 0xfc09) 2362 urb = alloc_bulk_urb(hdev, skb); 2363 else 2364 urb = alloc_ctrl_urb(hdev, skb); 2365 2366 /* When the 0xfc01 command is issued to boot into 2367 * the operational firmware, it will actually not 2368 * send a command complete event. To keep the flow 2369 * control working inject that event here. 2370 */ 2371 if (opcode == 0xfc01) 2372 inject_cmd_complete(hdev, opcode); 2373 } else { 2374 urb = alloc_ctrl_urb(hdev, skb); 2375 } 2376 if (IS_ERR(urb)) 2377 return PTR_ERR(urb); 2378 2379 hdev->stat.cmd_tx++; 2380 return submit_or_queue_tx_urb(hdev, urb); 2381 2382 case HCI_ACLDATA_PKT: 2383 urb = alloc_bulk_urb(hdev, skb); 2384 if (IS_ERR(urb)) 2385 return PTR_ERR(urb); 2386 2387 hdev->stat.acl_tx++; 2388 return submit_or_queue_tx_urb(hdev, urb); 2389 2390 case HCI_SCODATA_PKT: 2391 if (hci_conn_num(hdev, SCO_LINK) < 1) 2392 return -ENODEV; 2393 2394 urb = alloc_isoc_urb(hdev, skb); 2395 if (IS_ERR(urb)) 2396 return PTR_ERR(urb); 2397 2398 hdev->stat.sco_tx++; 2399 return submit_tx_urb(hdev, urb); 2400 } 2401 2402 return -EILSEQ; 2403 } 2404 2405 static bool btusb_setup_intel_new_get_fw_name(struct intel_version *ver, 2406 struct intel_boot_params *params, 2407 char *fw_name, size_t len, 2408 const char *suffix) 2409 { 2410 switch (ver->hw_variant) { 2411 case 0x0b: /* SfP */ 2412 case 0x0c: /* WsP */ 2413 snprintf(fw_name, len, "intel/ibt-%u-%u.%s", 2414 le16_to_cpu(ver->hw_variant), 2415 le16_to_cpu(params->dev_revid), 2416 suffix); 2417 break; 2418 case 0x11: /* JfP */ 2419 case 0x12: /* ThP */ 2420 case 0x13: /* HrP */ 2421 case 0x14: /* CcP */ 2422 snprintf(fw_name, len, "intel/ibt-%u-%u-%u.%s", 2423 le16_to_cpu(ver->hw_variant), 2424 le16_to_cpu(ver->hw_revision), 2425 le16_to_cpu(ver->fw_revision), 2426 suffix); 2427 break; 2428 default: 2429 return false; 2430 } 2431 return true; 2432 } 2433 2434 static void btusb_setup_intel_newgen_get_fw_name(const struct intel_version_tlv *ver_tlv, 2435 char *fw_name, size_t len, 2436 const char *suffix) 2437 { 2438 /* The firmware file name for new generation controllers will be 2439 * ibt-<cnvi_top type+cnvi_top step>-<cnvr_top type+cnvr_top step> 2440 */ 2441 snprintf(fw_name, len, "intel/ibt-%04x-%04x.%s", 2442 INTEL_CNVX_TOP_PACK_SWAB(INTEL_CNVX_TOP_TYPE(ver_tlv->cnvi_top), 2443 INTEL_CNVX_TOP_STEP(ver_tlv->cnvi_top)), 2444 INTEL_CNVX_TOP_PACK_SWAB(INTEL_CNVX_TOP_TYPE(ver_tlv->cnvr_top), 2445 INTEL_CNVX_TOP_STEP(ver_tlv->cnvr_top)), 2446 suffix); 2447 } 2448 2449 static int btusb_intel_download_firmware_newgen(struct hci_dev *hdev, 2450 struct intel_version_tlv *ver, 2451 u32 *boot_param) 2452 { 2453 const struct firmware *fw; 2454 char fwname[64]; 2455 int err; 2456 struct btusb_data *data = hci_get_drvdata(hdev); 2457 2458 if (!ver || !boot_param) 2459 return -EINVAL; 2460 2461 /* The hardware platform number has a fixed value of 0x37 and 2462 * for now only accept this single value. 2463 */ 2464 if (INTEL_HW_PLATFORM(ver->cnvi_bt) != 0x37) { 2465 bt_dev_err(hdev, "Unsupported Intel hardware platform (0x%2x)", 2466 INTEL_HW_PLATFORM(ver->cnvi_bt)); 2467 return -EINVAL; 2468 } 2469 2470 /* The firmware variant determines if the device is in bootloader 2471 * mode or is running operational firmware. The value 0x03 identifies 2472 * the bootloader and the value 0x23 identifies the operational 2473 * firmware. 2474 * 2475 * When the operational firmware is already present, then only 2476 * the check for valid Bluetooth device address is needed. This 2477 * determines if the device will be added as configured or 2478 * unconfigured controller. 2479 * 2480 * It is not possible to use the Secure Boot Parameters in this 2481 * case since that command is only available in bootloader mode. 2482 */ 2483 if (ver->img_type == 0x03) { 2484 clear_bit(BTUSB_BOOTLOADER, &data->flags); 2485 btintel_check_bdaddr(hdev); 2486 return 0; 2487 } 2488 2489 /* Check for supported iBT hardware variants of this firmware 2490 * loading method. 2491 * 2492 * This check has been put in place to ensure correct forward 2493 * compatibility options when newer hardware variants come along. 2494 */ 2495 switch (INTEL_HW_VARIANT(ver->cnvi_bt)) { 2496 case 0x17: /* TyP */ 2497 case 0x18: /* Slr */ 2498 case 0x19: /* Slr-F */ 2499 break; 2500 default: 2501 bt_dev_err(hdev, "Unsupported Intel hardware variant (0x%x)", 2502 INTEL_HW_VARIANT(ver->cnvi_bt)); 2503 return -EINVAL; 2504 } 2505 2506 /* If the device is not in bootloader mode, then the only possible 2507 * choice is to return an error and abort the device initialization. 2508 */ 2509 if (ver->img_type != 0x01) { 2510 bt_dev_err(hdev, "Unsupported Intel firmware variant (0x%x)", 2511 ver->img_type); 2512 return -ENODEV; 2513 } 2514 2515 /* It is required that every single firmware fragment is acknowledged 2516 * with a command complete event. If the boot parameters indicate 2517 * that this bootloader does not send them, then abort the setup. 2518 */ 2519 if (ver->limited_cce != 0x00) { 2520 bt_dev_err(hdev, "Unsupported Intel firmware loading method (0x%x)", 2521 ver->limited_cce); 2522 return -EINVAL; 2523 } 2524 2525 /* Secure boot engine type should be either 1 (ECDSA) or 0 (RSA) */ 2526 if (ver->sbe_type > 0x01) { 2527 bt_dev_err(hdev, "Unsupported Intel secure boot engine type (0x%x)", 2528 ver->sbe_type); 2529 return -EINVAL; 2530 } 2531 2532 /* If the OTP has no valid Bluetooth device address, then there will 2533 * also be no valid address for the operational firmware. 2534 */ 2535 if (!bacmp(&ver->otp_bd_addr, BDADDR_ANY)) { 2536 bt_dev_info(hdev, "No device address configured"); 2537 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks); 2538 } 2539 2540 btusb_setup_intel_newgen_get_fw_name(ver, fwname, sizeof(fwname), "sfi"); 2541 err = request_firmware(&fw, fwname, &hdev->dev); 2542 if (err < 0) { 2543 bt_dev_err(hdev, "Failed to load Intel firmware file (%d)", err); 2544 return err; 2545 } 2546 2547 bt_dev_info(hdev, "Found device firmware: %s", fwname); 2548 2549 if (fw->size < 644) { 2550 bt_dev_err(hdev, "Invalid size of firmware file (%zu)", 2551 fw->size); 2552 err = -EBADF; 2553 goto done; 2554 } 2555 2556 set_bit(BTUSB_DOWNLOADING, &data->flags); 2557 2558 /* Start firmware downloading and get boot parameter */ 2559 err = btintel_download_firmware_newgen(hdev, fw, boot_param, 2560 INTEL_HW_VARIANT(ver->cnvi_bt), 2561 ver->sbe_type); 2562 if (err < 0) { 2563 /* When FW download fails, send Intel Reset to retry 2564 * FW download. 2565 */ 2566 btintel_reset_to_bootloader(hdev); 2567 goto done; 2568 } 2569 set_bit(BTUSB_FIRMWARE_LOADED, &data->flags); 2570 2571 bt_dev_info(hdev, "Waiting for firmware download to complete"); 2572 2573 /* Before switching the device into operational mode and with that 2574 * booting the loaded firmware, wait for the bootloader notification 2575 * that all fragments have been successfully received. 2576 * 2577 * When the event processing receives the notification, then the 2578 * BTUSB_DOWNLOADING flag will be cleared. 2579 * 2580 * The firmware loading should not take longer than 5 seconds 2581 * and thus just timeout if that happens and fail the setup 2582 * of this device. 2583 */ 2584 err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING, 2585 TASK_INTERRUPTIBLE, 2586 msecs_to_jiffies(5000)); 2587 if (err == -EINTR) { 2588 bt_dev_err(hdev, "Firmware loading interrupted"); 2589 goto done; 2590 } 2591 2592 if (err) { 2593 bt_dev_err(hdev, "Firmware loading timeout"); 2594 err = -ETIMEDOUT; 2595 btintel_reset_to_bootloader(hdev); 2596 goto done; 2597 } 2598 2599 if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) { 2600 bt_dev_err(hdev, "Firmware loading failed"); 2601 err = -ENOEXEC; 2602 goto done; 2603 } 2604 2605 done: 2606 release_firmware(fw); 2607 return err; 2608 } 2609 2610 static int btusb_intel_download_firmware(struct hci_dev *hdev, 2611 struct intel_version *ver, 2612 struct intel_boot_params *params, 2613 u32 *boot_param) 2614 { 2615 const struct firmware *fw; 2616 char fwname[64]; 2617 int err; 2618 struct btusb_data *data = hci_get_drvdata(hdev); 2619 2620 if (!ver || !params) 2621 return -EINVAL; 2622 2623 /* The hardware platform number has a fixed value of 0x37 and 2624 * for now only accept this single value. 2625 */ 2626 if (ver->hw_platform != 0x37) { 2627 bt_dev_err(hdev, "Unsupported Intel hardware platform (%u)", 2628 ver->hw_platform); 2629 return -EINVAL; 2630 } 2631 2632 /* Check for supported iBT hardware variants of this firmware 2633 * loading method. 2634 * 2635 * This check has been put in place to ensure correct forward 2636 * compatibility options when newer hardware variants come along. 2637 */ 2638 switch (ver->hw_variant) { 2639 case 0x0b: /* SfP */ 2640 case 0x0c: /* WsP */ 2641 case 0x11: /* JfP */ 2642 case 0x12: /* ThP */ 2643 case 0x13: /* HrP */ 2644 case 0x14: /* CcP */ 2645 break; 2646 default: 2647 bt_dev_err(hdev, "Unsupported Intel hardware variant (%u)", 2648 ver->hw_variant); 2649 return -EINVAL; 2650 } 2651 2652 btintel_version_info(hdev, ver); 2653 2654 /* The firmware variant determines if the device is in bootloader 2655 * mode or is running operational firmware. The value 0x06 identifies 2656 * the bootloader and the value 0x23 identifies the operational 2657 * firmware. 2658 * 2659 * When the operational firmware is already present, then only 2660 * the check for valid Bluetooth device address is needed. This 2661 * determines if the device will be added as configured or 2662 * unconfigured controller. 2663 * 2664 * It is not possible to use the Secure Boot Parameters in this 2665 * case since that command is only available in bootloader mode. 2666 */ 2667 if (ver->fw_variant == 0x23) { 2668 clear_bit(BTUSB_BOOTLOADER, &data->flags); 2669 btintel_check_bdaddr(hdev); 2670 return 0; 2671 } 2672 2673 /* If the device is not in bootloader mode, then the only possible 2674 * choice is to return an error and abort the device initialization. 2675 */ 2676 if (ver->fw_variant != 0x06) { 2677 bt_dev_err(hdev, "Unsupported Intel firmware variant (%u)", 2678 ver->fw_variant); 2679 return -ENODEV; 2680 } 2681 2682 /* Read the secure boot parameters to identify the operating 2683 * details of the bootloader. 2684 */ 2685 err = btintel_read_boot_params(hdev, params); 2686 if (err) 2687 return err; 2688 2689 /* It is required that every single firmware fragment is acknowledged 2690 * with a command complete event. If the boot parameters indicate 2691 * that this bootloader does not send them, then abort the setup. 2692 */ 2693 if (params->limited_cce != 0x00) { 2694 bt_dev_err(hdev, "Unsupported Intel firmware loading method (%u)", 2695 params->limited_cce); 2696 return -EINVAL; 2697 } 2698 2699 /* If the OTP has no valid Bluetooth device address, then there will 2700 * also be no valid address for the operational firmware. 2701 */ 2702 if (!bacmp(¶ms->otp_bdaddr, BDADDR_ANY)) { 2703 bt_dev_info(hdev, "No device address configured"); 2704 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks); 2705 } 2706 2707 /* With this Intel bootloader only the hardware variant and device 2708 * revision information are used to select the right firmware for SfP 2709 * and WsP. 2710 * 2711 * The firmware filename is ibt-<hw_variant>-<dev_revid>.sfi. 2712 * 2713 * Currently the supported hardware variants are: 2714 * 11 (0x0b) for iBT3.0 (LnP/SfP) 2715 * 12 (0x0c) for iBT3.5 (WsP) 2716 * 2717 * For ThP/JfP and for future SKU's, the FW name varies based on HW 2718 * variant, HW revision and FW revision, as these are dependent on CNVi 2719 * and RF Combination. 2720 * 2721 * 17 (0x11) for iBT3.5 (JfP) 2722 * 18 (0x12) for iBT3.5 (ThP) 2723 * 2724 * The firmware file name for these will be 2725 * ibt-<hw_variant>-<hw_revision>-<fw_revision>.sfi. 2726 * 2727 */ 2728 err = btusb_setup_intel_new_get_fw_name(ver, params, fwname, 2729 sizeof(fwname), "sfi"); 2730 if (!err) { 2731 bt_dev_err(hdev, "Unsupported Intel firmware naming"); 2732 return -EINVAL; 2733 } 2734 2735 err = request_firmware(&fw, fwname, &hdev->dev); 2736 if (err < 0) { 2737 bt_dev_err(hdev, "Failed to load Intel firmware file (%d)", err); 2738 return err; 2739 } 2740 2741 bt_dev_info(hdev, "Found device firmware: %s", fwname); 2742 2743 if (fw->size < 644) { 2744 bt_dev_err(hdev, "Invalid size of firmware file (%zu)", 2745 fw->size); 2746 err = -EBADF; 2747 goto done; 2748 } 2749 2750 set_bit(BTUSB_DOWNLOADING, &data->flags); 2751 2752 /* Start firmware downloading and get boot parameter */ 2753 err = btintel_download_firmware(hdev, fw, boot_param); 2754 if (err < 0) { 2755 /* When FW download fails, send Intel Reset to retry 2756 * FW download. 2757 */ 2758 btintel_reset_to_bootloader(hdev); 2759 goto done; 2760 } 2761 set_bit(BTUSB_FIRMWARE_LOADED, &data->flags); 2762 2763 bt_dev_info(hdev, "Waiting for firmware download to complete"); 2764 2765 /* Before switching the device into operational mode and with that 2766 * booting the loaded firmware, wait for the bootloader notification 2767 * that all fragments have been successfully received. 2768 * 2769 * When the event processing receives the notification, then the 2770 * BTUSB_DOWNLOADING flag will be cleared. 2771 * 2772 * The firmware loading should not take longer than 5 seconds 2773 * and thus just timeout if that happens and fail the setup 2774 * of this device. 2775 */ 2776 err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING, 2777 TASK_INTERRUPTIBLE, 2778 msecs_to_jiffies(5000)); 2779 if (err == -EINTR) { 2780 bt_dev_err(hdev, "Firmware loading interrupted"); 2781 goto done; 2782 } 2783 2784 if (err) { 2785 bt_dev_err(hdev, "Firmware loading timeout"); 2786 err = -ETIMEDOUT; 2787 btintel_reset_to_bootloader(hdev); 2788 goto done; 2789 } 2790 2791 if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) { 2792 bt_dev_err(hdev, "Firmware loading failed"); 2793 err = -ENOEXEC; 2794 goto done; 2795 } 2796 2797 done: 2798 release_firmware(fw); 2799 return err; 2800 } 2801 2802 static int btusb_setup_intel_new(struct hci_dev *hdev) 2803 { 2804 struct btusb_data *data = hci_get_drvdata(hdev); 2805 struct intel_version ver; 2806 struct intel_boot_params params; 2807 u32 boot_param; 2808 char ddcname[64]; 2809 ktime_t calltime, delta, rettime; 2810 unsigned long long duration; 2811 int err; 2812 struct intel_debug_features features; 2813 2814 BT_DBG("%s", hdev->name); 2815 2816 /* Set the default boot parameter to 0x0 and it is updated to 2817 * SKU specific boot parameter after reading Intel_Write_Boot_Params 2818 * command while downloading the firmware. 2819 */ 2820 boot_param = 0x00000000; 2821 2822 calltime = ktime_get(); 2823 2824 /* Read the Intel version information to determine if the device 2825 * is in bootloader mode or if it already has operational firmware 2826 * loaded. 2827 */ 2828 err = btintel_read_version(hdev, &ver); 2829 if (err) { 2830 bt_dev_err(hdev, "Intel Read version failed (%d)", err); 2831 btintel_reset_to_bootloader(hdev); 2832 return err; 2833 } 2834 2835 err = btusb_intel_download_firmware(hdev, &ver, ¶ms, &boot_param); 2836 if (err) 2837 return err; 2838 2839 /* controller is already having an operational firmware */ 2840 if (ver.fw_variant == 0x23) 2841 goto finish; 2842 2843 rettime = ktime_get(); 2844 delta = ktime_sub(rettime, calltime); 2845 duration = (unsigned long long) ktime_to_ns(delta) >> 10; 2846 2847 bt_dev_info(hdev, "Firmware loaded in %llu usecs", duration); 2848 2849 calltime = ktime_get(); 2850 2851 set_bit(BTUSB_BOOTING, &data->flags); 2852 2853 err = btintel_send_intel_reset(hdev, boot_param); 2854 if (err) { 2855 bt_dev_err(hdev, "Intel Soft Reset failed (%d)", err); 2856 btintel_reset_to_bootloader(hdev); 2857 return err; 2858 } 2859 2860 /* The bootloader will not indicate when the device is ready. This 2861 * is done by the operational firmware sending bootup notification. 2862 * 2863 * Booting into operational firmware should not take longer than 2864 * 1 second. However if that happens, then just fail the setup 2865 * since something went wrong. 2866 */ 2867 bt_dev_info(hdev, "Waiting for device to boot"); 2868 2869 err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING, 2870 TASK_INTERRUPTIBLE, 2871 msecs_to_jiffies(1000)); 2872 2873 if (err == -EINTR) { 2874 bt_dev_err(hdev, "Device boot interrupted"); 2875 return -EINTR; 2876 } 2877 2878 if (err) { 2879 bt_dev_err(hdev, "Device boot timeout"); 2880 btintel_reset_to_bootloader(hdev); 2881 return -ETIMEDOUT; 2882 } 2883 2884 rettime = ktime_get(); 2885 delta = ktime_sub(rettime, calltime); 2886 duration = (unsigned long long) ktime_to_ns(delta) >> 10; 2887 2888 bt_dev_info(hdev, "Device booted in %llu usecs", duration); 2889 2890 clear_bit(BTUSB_BOOTLOADER, &data->flags); 2891 2892 err = btusb_setup_intel_new_get_fw_name(&ver, ¶ms, ddcname, 2893 sizeof(ddcname), "ddc"); 2894 2895 if (!err) { 2896 bt_dev_err(hdev, "Unsupported Intel firmware naming"); 2897 } else { 2898 /* Once the device is running in operational mode, it needs to 2899 * apply the device configuration (DDC) parameters. 2900 * 2901 * The device can work without DDC parameters, so even if it 2902 * fails to load the file, no need to fail the setup. 2903 */ 2904 btintel_load_ddc_config(hdev, ddcname); 2905 } 2906 2907 /* Read the Intel supported features and if new exception formats 2908 * supported, need to load the additional DDC config to enable. 2909 */ 2910 btintel_read_debug_features(hdev, &features); 2911 2912 /* Set DDC mask for available debug features */ 2913 btintel_set_debug_features(hdev, &features); 2914 2915 /* Read the Intel version information after loading the FW */ 2916 err = btintel_read_version(hdev, &ver); 2917 if (err) 2918 return err; 2919 2920 btintel_version_info(hdev, &ver); 2921 2922 finish: 2923 /* All Intel controllers that support the Microsoft vendor 2924 * extension are using 0xFC1E for VsMsftOpCode. 2925 */ 2926 switch (ver.hw_variant) { 2927 case 0x12: /* ThP */ 2928 hci_set_msft_opcode(hdev, 0xFC1E); 2929 break; 2930 } 2931 2932 /* Set the event mask for Intel specific vendor events. This enables 2933 * a few extra events that are useful during general operation. It 2934 * does not enable any debugging related events. 2935 * 2936 * The device will function correctly without these events enabled 2937 * and thus no need to fail the setup. 2938 */ 2939 btintel_set_event_mask(hdev, false); 2940 2941 return 0; 2942 } 2943 2944 static int btusb_setup_intel_newgen(struct hci_dev *hdev) 2945 { 2946 struct btusb_data *data = hci_get_drvdata(hdev); 2947 u32 boot_param; 2948 char ddcname[64]; 2949 ktime_t calltime, delta, rettime; 2950 unsigned long long duration; 2951 int err; 2952 struct intel_debug_features features; 2953 struct intel_version_tlv version; 2954 2955 bt_dev_dbg(hdev, ""); 2956 2957 /* Set the default boot parameter to 0x0 and it is updated to 2958 * SKU specific boot parameter after reading Intel_Write_Boot_Params 2959 * command while downloading the firmware. 2960 */ 2961 boot_param = 0x00000000; 2962 2963 calltime = ktime_get(); 2964 2965 /* Read the Intel version information to determine if the device 2966 * is in bootloader mode or if it already has operational firmware 2967 * loaded. 2968 */ 2969 err = btintel_read_version_tlv(hdev, &version); 2970 if (err) { 2971 bt_dev_err(hdev, "Intel Read version failed (%d)", err); 2972 btintel_reset_to_bootloader(hdev); 2973 return err; 2974 } 2975 2976 btintel_version_info_tlv(hdev, &version); 2977 2978 err = btusb_intel_download_firmware_newgen(hdev, &version, &boot_param); 2979 if (err) 2980 return err; 2981 2982 /* check if controller is already having an operational firmware */ 2983 if (version.img_type == 0x03) 2984 goto finish; 2985 2986 rettime = ktime_get(); 2987 delta = ktime_sub(rettime, calltime); 2988 duration = (unsigned long long)ktime_to_ns(delta) >> 10; 2989 2990 bt_dev_info(hdev, "Firmware loaded in %llu usecs", duration); 2991 2992 calltime = ktime_get(); 2993 2994 set_bit(BTUSB_BOOTING, &data->flags); 2995 2996 err = btintel_send_intel_reset(hdev, boot_param); 2997 if (err) { 2998 bt_dev_err(hdev, "Intel Soft Reset failed (%d)", err); 2999 btintel_reset_to_bootloader(hdev); 3000 return err; 3001 } 3002 3003 /* The bootloader will not indicate when the device is ready. This 3004 * is done by the operational firmware sending bootup notification. 3005 * 3006 * Booting into operational firmware should not take longer than 3007 * 1 second. However if that happens, then just fail the setup 3008 * since something went wrong. 3009 */ 3010 bt_dev_info(hdev, "Waiting for device to boot"); 3011 3012 err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING, 3013 TASK_INTERRUPTIBLE, 3014 msecs_to_jiffies(1000)); 3015 3016 if (err == -EINTR) { 3017 bt_dev_err(hdev, "Device boot interrupted"); 3018 return -EINTR; 3019 } 3020 3021 if (err) { 3022 bt_dev_err(hdev, "Device boot timeout"); 3023 btintel_reset_to_bootloader(hdev); 3024 return -ETIMEDOUT; 3025 } 3026 3027 rettime = ktime_get(); 3028 delta = ktime_sub(rettime, calltime); 3029 duration = (unsigned long long)ktime_to_ns(delta) >> 10; 3030 3031 bt_dev_info(hdev, "Device booted in %llu usecs", duration); 3032 3033 clear_bit(BTUSB_BOOTLOADER, &data->flags); 3034 3035 btusb_setup_intel_newgen_get_fw_name(&version, ddcname, sizeof(ddcname), 3036 "ddc"); 3037 /* Once the device is running in operational mode, it needs to 3038 * apply the device configuration (DDC) parameters. 3039 * 3040 * The device can work without DDC parameters, so even if it 3041 * fails to load the file, no need to fail the setup. 3042 */ 3043 btintel_load_ddc_config(hdev, ddcname); 3044 3045 /* Read the Intel supported features and if new exception formats 3046 * supported, need to load the additional DDC config to enable. 3047 */ 3048 btintel_read_debug_features(hdev, &features); 3049 3050 /* Set DDC mask for available debug features */ 3051 btintel_set_debug_features(hdev, &features); 3052 3053 /* Read the Intel version information after loading the FW */ 3054 err = btintel_read_version_tlv(hdev, &version); 3055 if (err) 3056 return err; 3057 3058 btintel_version_info_tlv(hdev, &version); 3059 3060 finish: 3061 /* Set the event mask for Intel specific vendor events. This enables 3062 * a few extra events that are useful during general operation. It 3063 * does not enable any debugging related events. 3064 * 3065 * The device will function correctly without these events enabled 3066 * and thus no need to fail the setup. 3067 */ 3068 btintel_set_event_mask(hdev, false); 3069 3070 return 0; 3071 } 3072 static int btusb_shutdown_intel(struct hci_dev *hdev) 3073 { 3074 struct sk_buff *skb; 3075 long ret; 3076 3077 /* In the shutdown sequence where Bluetooth is turned off followed 3078 * by WiFi being turned off, turning WiFi back on causes issue with 3079 * the RF calibration. 3080 * 3081 * To ensure that any RF activity has been stopped, issue HCI Reset 3082 * command to clear all ongoing activity including advertising, 3083 * scanning etc. 3084 */ 3085 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT); 3086 if (IS_ERR(skb)) { 3087 ret = PTR_ERR(skb); 3088 bt_dev_err(hdev, "HCI reset during shutdown failed"); 3089 return ret; 3090 } 3091 kfree_skb(skb); 3092 3093 /* Some platforms have an issue with BT LED when the interface is 3094 * down or BT radio is turned off, which takes 5 seconds to BT LED 3095 * goes off. This command turns off the BT LED immediately. 3096 */ 3097 skb = __hci_cmd_sync(hdev, 0xfc3f, 0, NULL, HCI_INIT_TIMEOUT); 3098 if (IS_ERR(skb)) { 3099 ret = PTR_ERR(skb); 3100 bt_dev_err(hdev, "turning off Intel device LED failed"); 3101 return ret; 3102 } 3103 kfree_skb(skb); 3104 3105 return 0; 3106 } 3107 3108 static int btusb_shutdown_intel_new(struct hci_dev *hdev) 3109 { 3110 struct sk_buff *skb; 3111 3112 /* Send HCI Reset to the controller to stop any BT activity which 3113 * were triggered. This will help to save power and maintain the 3114 * sync b/w Host and controller 3115 */ 3116 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT); 3117 if (IS_ERR(skb)) { 3118 bt_dev_err(hdev, "HCI reset during shutdown failed"); 3119 return PTR_ERR(skb); 3120 } 3121 kfree_skb(skb); 3122 3123 return 0; 3124 } 3125 3126 #define FIRMWARE_MT7663 "mediatek/mt7663pr2h.bin" 3127 #define FIRMWARE_MT7668 "mediatek/mt7668pr2h.bin" 3128 3129 #define HCI_WMT_MAX_EVENT_SIZE 64 3130 3131 enum { 3132 BTMTK_WMT_PATCH_DWNLD = 0x1, 3133 BTMTK_WMT_FUNC_CTRL = 0x6, 3134 BTMTK_WMT_RST = 0x7, 3135 BTMTK_WMT_SEMAPHORE = 0x17, 3136 }; 3137 3138 enum { 3139 BTMTK_WMT_INVALID, 3140 BTMTK_WMT_PATCH_UNDONE, 3141 BTMTK_WMT_PATCH_DONE, 3142 BTMTK_WMT_ON_UNDONE, 3143 BTMTK_WMT_ON_DONE, 3144 BTMTK_WMT_ON_PROGRESS, 3145 }; 3146 3147 struct btmtk_wmt_hdr { 3148 u8 dir; 3149 u8 op; 3150 __le16 dlen; 3151 u8 flag; 3152 } __packed; 3153 3154 struct btmtk_hci_wmt_cmd { 3155 struct btmtk_wmt_hdr hdr; 3156 u8 data[256]; 3157 } __packed; 3158 3159 struct btmtk_hci_wmt_evt { 3160 struct hci_event_hdr hhdr; 3161 struct btmtk_wmt_hdr whdr; 3162 } __packed; 3163 3164 struct btmtk_hci_wmt_evt_funcc { 3165 struct btmtk_hci_wmt_evt hwhdr; 3166 __be16 status; 3167 } __packed; 3168 3169 struct btmtk_tci_sleep { 3170 u8 mode; 3171 __le16 duration; 3172 __le16 host_duration; 3173 u8 host_wakeup_pin; 3174 u8 time_compensation; 3175 } __packed; 3176 3177 struct btmtk_hci_wmt_params { 3178 u8 op; 3179 u8 flag; 3180 u16 dlen; 3181 const void *data; 3182 u32 *status; 3183 }; 3184 3185 static void btusb_mtk_wmt_recv(struct urb *urb) 3186 { 3187 struct hci_dev *hdev = urb->context; 3188 struct btusb_data *data = hci_get_drvdata(hdev); 3189 struct hci_event_hdr *hdr; 3190 struct sk_buff *skb; 3191 int err; 3192 3193 if (urb->status == 0 && urb->actual_length > 0) { 3194 hdev->stat.byte_rx += urb->actual_length; 3195 3196 /* WMT event shouldn't be fragmented and the size should be 3197 * less than HCI_WMT_MAX_EVENT_SIZE. 3198 */ 3199 skb = bt_skb_alloc(HCI_WMT_MAX_EVENT_SIZE, GFP_ATOMIC); 3200 if (!skb) { 3201 hdev->stat.err_rx++; 3202 goto err_out; 3203 } 3204 3205 hci_skb_pkt_type(skb) = HCI_EVENT_PKT; 3206 skb_put_data(skb, urb->transfer_buffer, urb->actual_length); 3207 3208 hdr = (void *)skb->data; 3209 /* Fix up the vendor event id with 0xff for vendor specific 3210 * instead of 0xe4 so that event send via monitoring socket can 3211 * be parsed properly. 3212 */ 3213 hdr->evt = 0xff; 3214 3215 /* When someone waits for the WMT event, the skb is being cloned 3216 * and being processed the events from there then. 3217 */ 3218 if (test_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags)) { 3219 data->evt_skb = skb_clone(skb, GFP_ATOMIC); 3220 if (!data->evt_skb) 3221 goto err_out; 3222 } 3223 3224 err = hci_recv_frame(hdev, skb); 3225 if (err < 0) 3226 goto err_free_skb; 3227 3228 if (test_and_clear_bit(BTUSB_TX_WAIT_VND_EVT, 3229 &data->flags)) { 3230 /* Barrier to sync with other CPUs */ 3231 smp_mb__after_atomic(); 3232 wake_up_bit(&data->flags, 3233 BTUSB_TX_WAIT_VND_EVT); 3234 } 3235 err_out: 3236 return; 3237 err_free_skb: 3238 kfree_skb(data->evt_skb); 3239 data->evt_skb = NULL; 3240 return; 3241 } else if (urb->status == -ENOENT) { 3242 /* Avoid suspend failed when usb_kill_urb */ 3243 return; 3244 } 3245 3246 usb_mark_last_busy(data->udev); 3247 3248 /* The URB complete handler is still called with urb->actual_length = 0 3249 * when the event is not available, so we should keep re-submitting 3250 * URB until WMT event returns, Also, It's necessary to wait some time 3251 * between the two consecutive control URBs to relax the target device 3252 * to generate the event. Otherwise, the WMT event cannot return from 3253 * the device successfully. 3254 */ 3255 udelay(100); 3256 3257 usb_anchor_urb(urb, &data->ctrl_anchor); 3258 err = usb_submit_urb(urb, GFP_ATOMIC); 3259 if (err < 0) { 3260 /* -EPERM: urb is being killed; 3261 * -ENODEV: device got disconnected 3262 */ 3263 if (err != -EPERM && err != -ENODEV) 3264 bt_dev_err(hdev, "urb %p failed to resubmit (%d)", 3265 urb, -err); 3266 usb_unanchor_urb(urb); 3267 } 3268 } 3269 3270 static int btusb_mtk_submit_wmt_recv_urb(struct hci_dev *hdev) 3271 { 3272 struct btusb_data *data = hci_get_drvdata(hdev); 3273 struct usb_ctrlrequest *dr; 3274 unsigned char *buf; 3275 int err, size = 64; 3276 unsigned int pipe; 3277 struct urb *urb; 3278 3279 urb = usb_alloc_urb(0, GFP_KERNEL); 3280 if (!urb) 3281 return -ENOMEM; 3282 3283 dr = kmalloc(sizeof(*dr), GFP_KERNEL); 3284 if (!dr) { 3285 usb_free_urb(urb); 3286 return -ENOMEM; 3287 } 3288 3289 dr->bRequestType = USB_TYPE_VENDOR | USB_DIR_IN; 3290 dr->bRequest = 1; 3291 dr->wIndex = cpu_to_le16(0); 3292 dr->wValue = cpu_to_le16(48); 3293 dr->wLength = cpu_to_le16(size); 3294 3295 buf = kmalloc(size, GFP_KERNEL); 3296 if (!buf) { 3297 kfree(dr); 3298 usb_free_urb(urb); 3299 return -ENOMEM; 3300 } 3301 3302 pipe = usb_rcvctrlpipe(data->udev, 0); 3303 3304 usb_fill_control_urb(urb, data->udev, pipe, (void *)dr, 3305 buf, size, btusb_mtk_wmt_recv, hdev); 3306 3307 urb->transfer_flags |= URB_FREE_BUFFER; 3308 3309 usb_anchor_urb(urb, &data->ctrl_anchor); 3310 err = usb_submit_urb(urb, GFP_KERNEL); 3311 if (err < 0) { 3312 if (err != -EPERM && err != -ENODEV) 3313 bt_dev_err(hdev, "urb %p submission failed (%d)", 3314 urb, -err); 3315 usb_unanchor_urb(urb); 3316 } 3317 3318 usb_free_urb(urb); 3319 3320 return err; 3321 } 3322 3323 static int btusb_mtk_hci_wmt_sync(struct hci_dev *hdev, 3324 struct btmtk_hci_wmt_params *wmt_params) 3325 { 3326 struct btusb_data *data = hci_get_drvdata(hdev); 3327 struct btmtk_hci_wmt_evt_funcc *wmt_evt_funcc; 3328 u32 hlen, status = BTMTK_WMT_INVALID; 3329 struct btmtk_hci_wmt_evt *wmt_evt; 3330 struct btmtk_hci_wmt_cmd wc; 3331 struct btmtk_wmt_hdr *hdr; 3332 int err; 3333 3334 /* Submit control IN URB on demand to process the WMT event */ 3335 err = btusb_mtk_submit_wmt_recv_urb(hdev); 3336 if (err < 0) 3337 return err; 3338 3339 /* Send the WMT command and wait until the WMT event returns */ 3340 hlen = sizeof(*hdr) + wmt_params->dlen; 3341 if (hlen > 255) 3342 return -EINVAL; 3343 3344 hdr = (struct btmtk_wmt_hdr *)&wc; 3345 hdr->dir = 1; 3346 hdr->op = wmt_params->op; 3347 hdr->dlen = cpu_to_le16(wmt_params->dlen + 1); 3348 hdr->flag = wmt_params->flag; 3349 memcpy(wc.data, wmt_params->data, wmt_params->dlen); 3350 3351 set_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags); 3352 3353 err = __hci_cmd_send(hdev, 0xfc6f, hlen, &wc); 3354 3355 if (err < 0) { 3356 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags); 3357 return err; 3358 } 3359 3360 /* The vendor specific WMT commands are all answered by a vendor 3361 * specific event and will have the Command Status or Command 3362 * Complete as with usual HCI command flow control. 3363 * 3364 * After sending the command, wait for BTUSB_TX_WAIT_VND_EVT 3365 * state to be cleared. The driver specific event receive routine 3366 * will clear that state and with that indicate completion of the 3367 * WMT command. 3368 */ 3369 err = wait_on_bit_timeout(&data->flags, BTUSB_TX_WAIT_VND_EVT, 3370 TASK_INTERRUPTIBLE, HCI_INIT_TIMEOUT); 3371 if (err == -EINTR) { 3372 bt_dev_err(hdev, "Execution of wmt command interrupted"); 3373 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags); 3374 return err; 3375 } 3376 3377 if (err) { 3378 bt_dev_err(hdev, "Execution of wmt command timed out"); 3379 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags); 3380 return -ETIMEDOUT; 3381 } 3382 3383 /* Parse and handle the return WMT event */ 3384 wmt_evt = (struct btmtk_hci_wmt_evt *)data->evt_skb->data; 3385 if (wmt_evt->whdr.op != hdr->op) { 3386 bt_dev_err(hdev, "Wrong op received %d expected %d", 3387 wmt_evt->whdr.op, hdr->op); 3388 err = -EIO; 3389 goto err_free_skb; 3390 } 3391 3392 switch (wmt_evt->whdr.op) { 3393 case BTMTK_WMT_SEMAPHORE: 3394 if (wmt_evt->whdr.flag == 2) 3395 status = BTMTK_WMT_PATCH_UNDONE; 3396 else 3397 status = BTMTK_WMT_PATCH_DONE; 3398 break; 3399 case BTMTK_WMT_FUNC_CTRL: 3400 wmt_evt_funcc = (struct btmtk_hci_wmt_evt_funcc *)wmt_evt; 3401 if (be16_to_cpu(wmt_evt_funcc->status) == 0x404) 3402 status = BTMTK_WMT_ON_DONE; 3403 else if (be16_to_cpu(wmt_evt_funcc->status) == 0x420) 3404 status = BTMTK_WMT_ON_PROGRESS; 3405 else 3406 status = BTMTK_WMT_ON_UNDONE; 3407 break; 3408 } 3409 3410 if (wmt_params->status) 3411 *wmt_params->status = status; 3412 3413 err_free_skb: 3414 kfree_skb(data->evt_skb); 3415 data->evt_skb = NULL; 3416 3417 return err; 3418 } 3419 3420 static int btusb_mtk_setup_firmware(struct hci_dev *hdev, const char *fwname) 3421 { 3422 struct btmtk_hci_wmt_params wmt_params; 3423 const struct firmware *fw; 3424 const u8 *fw_ptr; 3425 size_t fw_size; 3426 int err, dlen; 3427 u8 flag, param; 3428 3429 err = request_firmware(&fw, fwname, &hdev->dev); 3430 if (err < 0) { 3431 bt_dev_err(hdev, "Failed to load firmware file (%d)", err); 3432 return err; 3433 } 3434 3435 /* Power on data RAM the firmware relies on. */ 3436 param = 1; 3437 wmt_params.op = BTMTK_WMT_FUNC_CTRL; 3438 wmt_params.flag = 3; 3439 wmt_params.dlen = sizeof(param); 3440 wmt_params.data = ¶m; 3441 wmt_params.status = NULL; 3442 3443 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params); 3444 if (err < 0) { 3445 bt_dev_err(hdev, "Failed to power on data RAM (%d)", err); 3446 goto err_release_fw; 3447 } 3448 3449 fw_ptr = fw->data; 3450 fw_size = fw->size; 3451 3452 /* The size of patch header is 30 bytes, should be skip */ 3453 if (fw_size < 30) { 3454 err = -EINVAL; 3455 goto err_release_fw; 3456 } 3457 3458 fw_size -= 30; 3459 fw_ptr += 30; 3460 flag = 1; 3461 3462 wmt_params.op = BTMTK_WMT_PATCH_DWNLD; 3463 wmt_params.status = NULL; 3464 3465 while (fw_size > 0) { 3466 dlen = min_t(int, 250, fw_size); 3467 3468 /* Tell deivice the position in sequence */ 3469 if (fw_size - dlen <= 0) 3470 flag = 3; 3471 else if (fw_size < fw->size - 30) 3472 flag = 2; 3473 3474 wmt_params.flag = flag; 3475 wmt_params.dlen = dlen; 3476 wmt_params.data = fw_ptr; 3477 3478 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params); 3479 if (err < 0) { 3480 bt_dev_err(hdev, "Failed to send wmt patch dwnld (%d)", 3481 err); 3482 goto err_release_fw; 3483 } 3484 3485 fw_size -= dlen; 3486 fw_ptr += dlen; 3487 } 3488 3489 wmt_params.op = BTMTK_WMT_RST; 3490 wmt_params.flag = 4; 3491 wmt_params.dlen = 0; 3492 wmt_params.data = NULL; 3493 wmt_params.status = NULL; 3494 3495 /* Activate funciton the firmware providing to */ 3496 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params); 3497 if (err < 0) { 3498 bt_dev_err(hdev, "Failed to send wmt rst (%d)", err); 3499 goto err_release_fw; 3500 } 3501 3502 /* Wait a few moments for firmware activation done */ 3503 usleep_range(10000, 12000); 3504 3505 err_release_fw: 3506 release_firmware(fw); 3507 3508 return err; 3509 } 3510 3511 static int btusb_mtk_func_query(struct hci_dev *hdev) 3512 { 3513 struct btmtk_hci_wmt_params wmt_params; 3514 int status, err; 3515 u8 param = 0; 3516 3517 /* Query whether the function is enabled */ 3518 wmt_params.op = BTMTK_WMT_FUNC_CTRL; 3519 wmt_params.flag = 4; 3520 wmt_params.dlen = sizeof(param); 3521 wmt_params.data = ¶m; 3522 wmt_params.status = &status; 3523 3524 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params); 3525 if (err < 0) { 3526 bt_dev_err(hdev, "Failed to query function status (%d)", err); 3527 return err; 3528 } 3529 3530 return status; 3531 } 3532 3533 static int btusb_mtk_reg_read(struct btusb_data *data, u32 reg, u32 *val) 3534 { 3535 int pipe, err, size = sizeof(u32); 3536 void *buf; 3537 3538 buf = kzalloc(size, GFP_KERNEL); 3539 if (!buf) 3540 return -ENOMEM; 3541 3542 pipe = usb_rcvctrlpipe(data->udev, 0); 3543 err = usb_control_msg(data->udev, pipe, 0x63, 3544 USB_TYPE_VENDOR | USB_DIR_IN, 3545 reg >> 16, reg & 0xffff, 3546 buf, size, USB_CTRL_SET_TIMEOUT); 3547 if (err < 0) 3548 goto err_free_buf; 3549 3550 *val = get_unaligned_le32(buf); 3551 3552 err_free_buf: 3553 kfree(buf); 3554 3555 return err; 3556 } 3557 3558 static int btusb_mtk_id_get(struct btusb_data *data, u32 *id) 3559 { 3560 return btusb_mtk_reg_read(data, 0x80000008, id); 3561 } 3562 3563 static int btusb_mtk_setup(struct hci_dev *hdev) 3564 { 3565 struct btusb_data *data = hci_get_drvdata(hdev); 3566 struct btmtk_hci_wmt_params wmt_params; 3567 ktime_t calltime, delta, rettime; 3568 struct btmtk_tci_sleep tci_sleep; 3569 unsigned long long duration; 3570 struct sk_buff *skb; 3571 const char *fwname; 3572 int err, status; 3573 u32 dev_id; 3574 u8 param; 3575 3576 calltime = ktime_get(); 3577 3578 err = btusb_mtk_id_get(data, &dev_id); 3579 if (err < 0) { 3580 bt_dev_err(hdev, "Failed to get device id (%d)", err); 3581 return err; 3582 } 3583 3584 switch (dev_id) { 3585 case 0x7663: 3586 fwname = FIRMWARE_MT7663; 3587 break; 3588 case 0x7668: 3589 fwname = FIRMWARE_MT7668; 3590 break; 3591 default: 3592 bt_dev_err(hdev, "Unsupported support hardware variant (%08x)", 3593 dev_id); 3594 return -ENODEV; 3595 } 3596 3597 /* Query whether the firmware is already download */ 3598 wmt_params.op = BTMTK_WMT_SEMAPHORE; 3599 wmt_params.flag = 1; 3600 wmt_params.dlen = 0; 3601 wmt_params.data = NULL; 3602 wmt_params.status = &status; 3603 3604 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params); 3605 if (err < 0) { 3606 bt_dev_err(hdev, "Failed to query firmware status (%d)", err); 3607 return err; 3608 } 3609 3610 if (status == BTMTK_WMT_PATCH_DONE) { 3611 bt_dev_info(hdev, "firmware already downloaded"); 3612 goto ignore_setup_fw; 3613 } 3614 3615 /* Setup a firmware which the device definitely requires */ 3616 err = btusb_mtk_setup_firmware(hdev, fwname); 3617 if (err < 0) 3618 return err; 3619 3620 ignore_setup_fw: 3621 err = readx_poll_timeout(btusb_mtk_func_query, hdev, status, 3622 status < 0 || status != BTMTK_WMT_ON_PROGRESS, 3623 2000, 5000000); 3624 /* -ETIMEDOUT happens */ 3625 if (err < 0) 3626 return err; 3627 3628 /* The other errors happen in btusb_mtk_func_query */ 3629 if (status < 0) 3630 return status; 3631 3632 if (status == BTMTK_WMT_ON_DONE) { 3633 bt_dev_info(hdev, "function already on"); 3634 goto ignore_func_on; 3635 } 3636 3637 /* Enable Bluetooth protocol */ 3638 param = 1; 3639 wmt_params.op = BTMTK_WMT_FUNC_CTRL; 3640 wmt_params.flag = 0; 3641 wmt_params.dlen = sizeof(param); 3642 wmt_params.data = ¶m; 3643 wmt_params.status = NULL; 3644 3645 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params); 3646 if (err < 0) { 3647 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err); 3648 return err; 3649 } 3650 3651 ignore_func_on: 3652 /* Apply the low power environment setup */ 3653 tci_sleep.mode = 0x5; 3654 tci_sleep.duration = cpu_to_le16(0x640); 3655 tci_sleep.host_duration = cpu_to_le16(0x640); 3656 tci_sleep.host_wakeup_pin = 0; 3657 tci_sleep.time_compensation = 0; 3658 3659 skb = __hci_cmd_sync(hdev, 0xfc7a, sizeof(tci_sleep), &tci_sleep, 3660 HCI_INIT_TIMEOUT); 3661 if (IS_ERR(skb)) { 3662 err = PTR_ERR(skb); 3663 bt_dev_err(hdev, "Failed to apply low power setting (%d)", err); 3664 return err; 3665 } 3666 kfree_skb(skb); 3667 3668 rettime = ktime_get(); 3669 delta = ktime_sub(rettime, calltime); 3670 duration = (unsigned long long)ktime_to_ns(delta) >> 10; 3671 3672 bt_dev_info(hdev, "Device setup in %llu usecs", duration); 3673 3674 return 0; 3675 } 3676 3677 static int btusb_mtk_shutdown(struct hci_dev *hdev) 3678 { 3679 struct btmtk_hci_wmt_params wmt_params; 3680 u8 param = 0; 3681 int err; 3682 3683 /* Disable the device */ 3684 wmt_params.op = BTMTK_WMT_FUNC_CTRL; 3685 wmt_params.flag = 0; 3686 wmt_params.dlen = sizeof(param); 3687 wmt_params.data = ¶m; 3688 wmt_params.status = NULL; 3689 3690 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params); 3691 if (err < 0) { 3692 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err); 3693 return err; 3694 } 3695 3696 return 0; 3697 } 3698 3699 MODULE_FIRMWARE(FIRMWARE_MT7663); 3700 MODULE_FIRMWARE(FIRMWARE_MT7668); 3701 3702 #ifdef CONFIG_PM 3703 /* Configure an out-of-band gpio as wake-up pin, if specified in device tree */ 3704 static int marvell_config_oob_wake(struct hci_dev *hdev) 3705 { 3706 struct sk_buff *skb; 3707 struct btusb_data *data = hci_get_drvdata(hdev); 3708 struct device *dev = &data->udev->dev; 3709 u16 pin, gap, opcode; 3710 int ret; 3711 u8 cmd[5]; 3712 3713 /* Move on if no wakeup pin specified */ 3714 if (of_property_read_u16(dev->of_node, "marvell,wakeup-pin", &pin) || 3715 of_property_read_u16(dev->of_node, "marvell,wakeup-gap-ms", &gap)) 3716 return 0; 3717 3718 /* Vendor specific command to configure a GPIO as wake-up pin */ 3719 opcode = hci_opcode_pack(0x3F, 0x59); 3720 cmd[0] = opcode & 0xFF; 3721 cmd[1] = opcode >> 8; 3722 cmd[2] = 2; /* length of parameters that follow */ 3723 cmd[3] = pin; 3724 cmd[4] = gap; /* time in ms, for which wakeup pin should be asserted */ 3725 3726 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL); 3727 if (!skb) { 3728 bt_dev_err(hdev, "%s: No memory\n", __func__); 3729 return -ENOMEM; 3730 } 3731 3732 skb_put_data(skb, cmd, sizeof(cmd)); 3733 hci_skb_pkt_type(skb) = HCI_COMMAND_PKT; 3734 3735 ret = btusb_send_frame(hdev, skb); 3736 if (ret) { 3737 bt_dev_err(hdev, "%s: configuration failed\n", __func__); 3738 kfree_skb(skb); 3739 return ret; 3740 } 3741 3742 return 0; 3743 } 3744 #endif 3745 3746 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev, 3747 const bdaddr_t *bdaddr) 3748 { 3749 struct sk_buff *skb; 3750 u8 buf[8]; 3751 long ret; 3752 3753 buf[0] = 0xfe; 3754 buf[1] = sizeof(bdaddr_t); 3755 memcpy(buf + 2, bdaddr, sizeof(bdaddr_t)); 3756 3757 skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT); 3758 if (IS_ERR(skb)) { 3759 ret = PTR_ERR(skb); 3760 bt_dev_err(hdev, "changing Marvell device address failed (%ld)", 3761 ret); 3762 return ret; 3763 } 3764 kfree_skb(skb); 3765 3766 return 0; 3767 } 3768 3769 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev, 3770 const bdaddr_t *bdaddr) 3771 { 3772 struct sk_buff *skb; 3773 u8 buf[10]; 3774 long ret; 3775 3776 buf[0] = 0x01; 3777 buf[1] = 0x01; 3778 buf[2] = 0x00; 3779 buf[3] = sizeof(bdaddr_t); 3780 memcpy(buf + 4, bdaddr, sizeof(bdaddr_t)); 3781 3782 skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT); 3783 if (IS_ERR(skb)) { 3784 ret = PTR_ERR(skb); 3785 bt_dev_err(hdev, "Change address command failed (%ld)", ret); 3786 return ret; 3787 } 3788 kfree_skb(skb); 3789 3790 return 0; 3791 } 3792 3793 static int btusb_set_bdaddr_wcn6855(struct hci_dev *hdev, 3794 const bdaddr_t *bdaddr) 3795 { 3796 struct sk_buff *skb; 3797 u8 buf[6]; 3798 long ret; 3799 3800 memcpy(buf, bdaddr, sizeof(bdaddr_t)); 3801 3802 skb = __hci_cmd_sync_ev(hdev, 0xfc14, sizeof(buf), buf, 3803 HCI_EV_CMD_COMPLETE, HCI_INIT_TIMEOUT); 3804 if (IS_ERR(skb)) { 3805 ret = PTR_ERR(skb); 3806 bt_dev_err(hdev, "Change address command failed (%ld)", ret); 3807 return ret; 3808 } 3809 kfree_skb(skb); 3810 3811 return 0; 3812 } 3813 3814 #define QCA_DFU_PACKET_LEN 4096 3815 3816 #define QCA_GET_TARGET_VERSION 0x09 3817 #define QCA_CHECK_STATUS 0x05 3818 #define QCA_DFU_DOWNLOAD 0x01 3819 3820 #define QCA_SYSCFG_UPDATED 0x40 3821 #define QCA_PATCH_UPDATED 0x80 3822 #define QCA_DFU_TIMEOUT 3000 3823 #define QCA_FLAG_MULTI_NVM 0x80 3824 3825 struct qca_version { 3826 __le32 rom_version; 3827 __le32 patch_version; 3828 __le32 ram_version; 3829 __le16 board_id; 3830 __le16 flag; 3831 __u8 reserved[4]; 3832 } __packed; 3833 3834 struct qca_rampatch_version { 3835 __le16 rom_version_high; 3836 __le16 rom_version_low; 3837 __le16 patch_version; 3838 } __packed; 3839 3840 struct qca_device_info { 3841 u32 rom_version; 3842 u8 rampatch_hdr; /* length of header in rampatch */ 3843 u8 nvm_hdr; /* length of header in NVM */ 3844 u8 ver_offset; /* offset of version structure in rampatch */ 3845 }; 3846 3847 static const struct qca_device_info qca_devices_table[] = { 3848 { 0x00000100, 20, 4, 8 }, /* Rome 1.0 */ 3849 { 0x00000101, 20, 4, 8 }, /* Rome 1.1 */ 3850 { 0x00000200, 28, 4, 16 }, /* Rome 2.0 */ 3851 { 0x00000201, 28, 4, 16 }, /* Rome 2.1 */ 3852 { 0x00000300, 28, 4, 16 }, /* Rome 3.0 */ 3853 { 0x00000302, 28, 4, 16 }, /* Rome 3.2 */ 3854 { 0x00130100, 40, 4, 16 }, /* WCN6855 1.0 */ 3855 { 0x00130200, 40, 4, 16 }, /* WCN6855 2.0 */ 3856 }; 3857 3858 static int btusb_qca_send_vendor_req(struct usb_device *udev, u8 request, 3859 void *data, u16 size) 3860 { 3861 int pipe, err; 3862 u8 *buf; 3863 3864 buf = kmalloc(size, GFP_KERNEL); 3865 if (!buf) 3866 return -ENOMEM; 3867 3868 /* Found some of USB hosts have IOT issues with ours so that we should 3869 * not wait until HCI layer is ready. 3870 */ 3871 pipe = usb_rcvctrlpipe(udev, 0); 3872 err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN, 3873 0, 0, buf, size, USB_CTRL_SET_TIMEOUT); 3874 if (err < 0) { 3875 dev_err(&udev->dev, "Failed to access otp area (%d)", err); 3876 goto done; 3877 } 3878 3879 memcpy(data, buf, size); 3880 3881 done: 3882 kfree(buf); 3883 3884 return err; 3885 } 3886 3887 static int btusb_setup_qca_download_fw(struct hci_dev *hdev, 3888 const struct firmware *firmware, 3889 size_t hdr_size) 3890 { 3891 struct btusb_data *btdata = hci_get_drvdata(hdev); 3892 struct usb_device *udev = btdata->udev; 3893 size_t count, size, sent = 0; 3894 int pipe, len, err; 3895 u8 *buf; 3896 3897 buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL); 3898 if (!buf) 3899 return -ENOMEM; 3900 3901 count = firmware->size; 3902 3903 size = min_t(size_t, count, hdr_size); 3904 memcpy(buf, firmware->data, size); 3905 3906 /* USB patches should go down to controller through USB path 3907 * because binary format fits to go down through USB channel. 3908 * USB control path is for patching headers and USB bulk is for 3909 * patch body. 3910 */ 3911 pipe = usb_sndctrlpipe(udev, 0); 3912 err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR, 3913 0, 0, buf, size, USB_CTRL_SET_TIMEOUT); 3914 if (err < 0) { 3915 bt_dev_err(hdev, "Failed to send headers (%d)", err); 3916 goto done; 3917 } 3918 3919 sent += size; 3920 count -= size; 3921 3922 while (count) { 3923 size = min_t(size_t, count, QCA_DFU_PACKET_LEN); 3924 3925 memcpy(buf, firmware->data + sent, size); 3926 3927 pipe = usb_sndbulkpipe(udev, 0x02); 3928 err = usb_bulk_msg(udev, pipe, buf, size, &len, 3929 QCA_DFU_TIMEOUT); 3930 if (err < 0) { 3931 bt_dev_err(hdev, "Failed to send body at %zd of %zd (%d)", 3932 sent, firmware->size, err); 3933 break; 3934 } 3935 3936 if (size != len) { 3937 bt_dev_err(hdev, "Failed to get bulk buffer"); 3938 err = -EILSEQ; 3939 break; 3940 } 3941 3942 sent += size; 3943 count -= size; 3944 } 3945 3946 done: 3947 kfree(buf); 3948 return err; 3949 } 3950 3951 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev, 3952 struct qca_version *ver, 3953 const struct qca_device_info *info) 3954 { 3955 struct qca_rampatch_version *rver; 3956 const struct firmware *fw; 3957 u32 ver_rom, ver_patch, rver_rom; 3958 u16 rver_rom_low, rver_rom_high, rver_patch; 3959 char fwname[64]; 3960 int err; 3961 3962 ver_rom = le32_to_cpu(ver->rom_version); 3963 ver_patch = le32_to_cpu(ver->patch_version); 3964 3965 snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom); 3966 3967 err = request_firmware(&fw, fwname, &hdev->dev); 3968 if (err) { 3969 bt_dev_err(hdev, "failed to request rampatch file: %s (%d)", 3970 fwname, err); 3971 return err; 3972 } 3973 3974 bt_dev_info(hdev, "using rampatch file: %s", fwname); 3975 3976 rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset); 3977 rver_rom_low = le16_to_cpu(rver->rom_version_low); 3978 rver_patch = le16_to_cpu(rver->patch_version); 3979 3980 if (ver_rom & ~0xffffU) { 3981 rver_rom_high = le16_to_cpu(rver->rom_version_high); 3982 rver_rom = le32_to_cpu(rver_rom_high << 16 | rver_rom_low); 3983 } else { 3984 rver_rom = rver_rom_low; 3985 } 3986 3987 bt_dev_info(hdev, "QCA: patch rome 0x%x build 0x%x, " 3988 "firmware rome 0x%x build 0x%x", 3989 rver_rom, rver_patch, ver_rom, ver_patch); 3990 3991 if (rver_rom != ver_rom || rver_patch <= ver_patch) { 3992 bt_dev_err(hdev, "rampatch file version did not match with firmware"); 3993 err = -EINVAL; 3994 goto done; 3995 } 3996 3997 err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr); 3998 3999 done: 4000 release_firmware(fw); 4001 4002 return err; 4003 } 4004 4005 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev, 4006 struct qca_version *ver, 4007 const struct qca_device_info *info) 4008 { 4009 const struct firmware *fw; 4010 char fwname[64]; 4011 int err; 4012 4013 if (((ver->flag >> 8) & 0xff) == QCA_FLAG_MULTI_NVM) { 4014 snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x_%04x.bin", 4015 le32_to_cpu(ver->rom_version), 4016 le16_to_cpu(ver->board_id)); 4017 } else { 4018 snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x.bin", 4019 le32_to_cpu(ver->rom_version)); 4020 } 4021 4022 err = request_firmware(&fw, fwname, &hdev->dev); 4023 if (err) { 4024 bt_dev_err(hdev, "failed to request NVM file: %s (%d)", 4025 fwname, err); 4026 return err; 4027 } 4028 4029 bt_dev_info(hdev, "using NVM file: %s", fwname); 4030 4031 err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr); 4032 4033 release_firmware(fw); 4034 4035 return err; 4036 } 4037 4038 /* identify the ROM version and check whether patches are needed */ 4039 static bool btusb_qca_need_patch(struct usb_device *udev) 4040 { 4041 struct qca_version ver; 4042 4043 if (btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver, 4044 sizeof(ver)) < 0) 4045 return false; 4046 /* only low ROM versions need patches */ 4047 return !(le32_to_cpu(ver.rom_version) & ~0xffffU); 4048 } 4049 4050 static int btusb_setup_qca(struct hci_dev *hdev) 4051 { 4052 struct btusb_data *btdata = hci_get_drvdata(hdev); 4053 struct usb_device *udev = btdata->udev; 4054 const struct qca_device_info *info = NULL; 4055 struct qca_version ver; 4056 u32 ver_rom; 4057 u8 status; 4058 int i, err; 4059 4060 err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver, 4061 sizeof(ver)); 4062 if (err < 0) 4063 return err; 4064 4065 ver_rom = le32_to_cpu(ver.rom_version); 4066 4067 for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) { 4068 if (ver_rom == qca_devices_table[i].rom_version) 4069 info = &qca_devices_table[i]; 4070 } 4071 if (!info) { 4072 bt_dev_err(hdev, "don't support firmware rome 0x%x", ver_rom); 4073 return -ENODEV; 4074 } 4075 4076 err = btusb_qca_send_vendor_req(udev, QCA_CHECK_STATUS, &status, 4077 sizeof(status)); 4078 if (err < 0) 4079 return err; 4080 4081 if (!(status & QCA_PATCH_UPDATED)) { 4082 err = btusb_setup_qca_load_rampatch(hdev, &ver, info); 4083 if (err < 0) 4084 return err; 4085 } 4086 4087 err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver, 4088 sizeof(ver)); 4089 if (err < 0) 4090 return err; 4091 4092 if (!(status & QCA_SYSCFG_UPDATED)) { 4093 err = btusb_setup_qca_load_nvm(hdev, &ver, info); 4094 if (err < 0) 4095 return err; 4096 } 4097 4098 return 0; 4099 } 4100 4101 static inline int __set_diag_interface(struct hci_dev *hdev) 4102 { 4103 struct btusb_data *data = hci_get_drvdata(hdev); 4104 struct usb_interface *intf = data->diag; 4105 int i; 4106 4107 if (!data->diag) 4108 return -ENODEV; 4109 4110 data->diag_tx_ep = NULL; 4111 data->diag_rx_ep = NULL; 4112 4113 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { 4114 struct usb_endpoint_descriptor *ep_desc; 4115 4116 ep_desc = &intf->cur_altsetting->endpoint[i].desc; 4117 4118 if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) { 4119 data->diag_tx_ep = ep_desc; 4120 continue; 4121 } 4122 4123 if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) { 4124 data->diag_rx_ep = ep_desc; 4125 continue; 4126 } 4127 } 4128 4129 if (!data->diag_tx_ep || !data->diag_rx_ep) { 4130 bt_dev_err(hdev, "invalid diagnostic descriptors"); 4131 return -ENODEV; 4132 } 4133 4134 return 0; 4135 } 4136 4137 static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable) 4138 { 4139 struct btusb_data *data = hci_get_drvdata(hdev); 4140 struct sk_buff *skb; 4141 struct urb *urb; 4142 unsigned int pipe; 4143 4144 if (!data->diag_tx_ep) 4145 return ERR_PTR(-ENODEV); 4146 4147 urb = usb_alloc_urb(0, GFP_KERNEL); 4148 if (!urb) 4149 return ERR_PTR(-ENOMEM); 4150 4151 skb = bt_skb_alloc(2, GFP_KERNEL); 4152 if (!skb) { 4153 usb_free_urb(urb); 4154 return ERR_PTR(-ENOMEM); 4155 } 4156 4157 skb_put_u8(skb, 0xf0); 4158 skb_put_u8(skb, enable); 4159 4160 pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress); 4161 4162 usb_fill_bulk_urb(urb, data->udev, pipe, 4163 skb->data, skb->len, btusb_tx_complete, skb); 4164 4165 skb->dev = (void *)hdev; 4166 4167 return urb; 4168 } 4169 4170 static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable) 4171 { 4172 struct btusb_data *data = hci_get_drvdata(hdev); 4173 struct urb *urb; 4174 4175 if (!data->diag) 4176 return -ENODEV; 4177 4178 if (!test_bit(HCI_RUNNING, &hdev->flags)) 4179 return -ENETDOWN; 4180 4181 urb = alloc_diag_urb(hdev, enable); 4182 if (IS_ERR(urb)) 4183 return PTR_ERR(urb); 4184 4185 return submit_or_queue_tx_urb(hdev, urb); 4186 } 4187 4188 #ifdef CONFIG_PM 4189 static irqreturn_t btusb_oob_wake_handler(int irq, void *priv) 4190 { 4191 struct btusb_data *data = priv; 4192 4193 pm_wakeup_event(&data->udev->dev, 0); 4194 pm_system_wakeup(); 4195 4196 /* Disable only if not already disabled (keep it balanced) */ 4197 if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) { 4198 disable_irq_nosync(irq); 4199 disable_irq_wake(irq); 4200 } 4201 return IRQ_HANDLED; 4202 } 4203 4204 static const struct of_device_id btusb_match_table[] = { 4205 { .compatible = "usb1286,204e" }, 4206 { .compatible = "usbcf3,e300" }, /* QCA6174A */ 4207 { .compatible = "usb4ca,301a" }, /* QCA6174A (Lite-On) */ 4208 { } 4209 }; 4210 MODULE_DEVICE_TABLE(of, btusb_match_table); 4211 4212 /* Use an oob wakeup pin? */ 4213 static int btusb_config_oob_wake(struct hci_dev *hdev) 4214 { 4215 struct btusb_data *data = hci_get_drvdata(hdev); 4216 struct device *dev = &data->udev->dev; 4217 int irq, ret; 4218 4219 clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags); 4220 4221 if (!of_match_device(btusb_match_table, dev)) 4222 return 0; 4223 4224 /* Move on if no IRQ specified */ 4225 irq = of_irq_get_byname(dev->of_node, "wakeup"); 4226 if (irq <= 0) { 4227 bt_dev_dbg(hdev, "%s: no OOB Wakeup IRQ in DT", __func__); 4228 return 0; 4229 } 4230 4231 irq_set_status_flags(irq, IRQ_NOAUTOEN); 4232 ret = devm_request_irq(&hdev->dev, irq, btusb_oob_wake_handler, 4233 0, "OOB Wake-on-BT", data); 4234 if (ret) { 4235 bt_dev_err(hdev, "%s: IRQ request failed", __func__); 4236 return ret; 4237 } 4238 4239 ret = device_init_wakeup(dev, true); 4240 if (ret) { 4241 bt_dev_err(hdev, "%s: failed to init_wakeup", __func__); 4242 return ret; 4243 } 4244 4245 data->oob_wake_irq = irq; 4246 bt_dev_info(hdev, "OOB Wake-on-BT configured at IRQ %u", irq); 4247 return 0; 4248 } 4249 #endif 4250 4251 static void btusb_check_needs_reset_resume(struct usb_interface *intf) 4252 { 4253 if (dmi_check_system(btusb_needs_reset_resume_table)) 4254 interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME; 4255 } 4256 4257 static bool btusb_prevent_wake(struct hci_dev *hdev) 4258 { 4259 struct btusb_data *data = hci_get_drvdata(hdev); 4260 4261 if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags)) 4262 return true; 4263 4264 return !device_may_wakeup(&data->udev->dev); 4265 } 4266 4267 static int btusb_probe(struct usb_interface *intf, 4268 const struct usb_device_id *id) 4269 { 4270 struct usb_endpoint_descriptor *ep_desc; 4271 struct gpio_desc *reset_gpio; 4272 struct btusb_data *data; 4273 struct hci_dev *hdev; 4274 unsigned ifnum_base; 4275 int i, err; 4276 4277 BT_DBG("intf %p id %p", intf, id); 4278 4279 /* interface numbers are hardcoded in the spec */ 4280 if (intf->cur_altsetting->desc.bInterfaceNumber != 0) { 4281 if (!(id->driver_info & BTUSB_IFNUM_2)) 4282 return -ENODEV; 4283 if (intf->cur_altsetting->desc.bInterfaceNumber != 2) 4284 return -ENODEV; 4285 } 4286 4287 ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber; 4288 4289 if (!id->driver_info) { 4290 const struct usb_device_id *match; 4291 4292 match = usb_match_id(intf, blacklist_table); 4293 if (match) 4294 id = match; 4295 } 4296 4297 if (id->driver_info == BTUSB_IGNORE) 4298 return -ENODEV; 4299 4300 if (id->driver_info & BTUSB_ATH3012) { 4301 struct usb_device *udev = interface_to_usbdev(intf); 4302 4303 /* Old firmware would otherwise let ath3k driver load 4304 * patch and sysconfig files 4305 */ 4306 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001 && 4307 !btusb_qca_need_patch(udev)) 4308 return -ENODEV; 4309 } 4310 4311 data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL); 4312 if (!data) 4313 return -ENOMEM; 4314 4315 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { 4316 ep_desc = &intf->cur_altsetting->endpoint[i].desc; 4317 4318 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) { 4319 data->intr_ep = ep_desc; 4320 continue; 4321 } 4322 4323 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) { 4324 data->bulk_tx_ep = ep_desc; 4325 continue; 4326 } 4327 4328 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) { 4329 data->bulk_rx_ep = ep_desc; 4330 continue; 4331 } 4332 } 4333 4334 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) 4335 return -ENODEV; 4336 4337 if (id->driver_info & BTUSB_AMP) { 4338 data->cmdreq_type = USB_TYPE_CLASS | 0x01; 4339 data->cmdreq = 0x2b; 4340 } else { 4341 data->cmdreq_type = USB_TYPE_CLASS; 4342 data->cmdreq = 0x00; 4343 } 4344 4345 data->udev = interface_to_usbdev(intf); 4346 data->intf = intf; 4347 4348 INIT_WORK(&data->work, btusb_work); 4349 INIT_WORK(&data->waker, btusb_waker); 4350 init_usb_anchor(&data->deferred); 4351 init_usb_anchor(&data->tx_anchor); 4352 spin_lock_init(&data->txlock); 4353 4354 init_usb_anchor(&data->intr_anchor); 4355 init_usb_anchor(&data->bulk_anchor); 4356 init_usb_anchor(&data->isoc_anchor); 4357 init_usb_anchor(&data->diag_anchor); 4358 init_usb_anchor(&data->ctrl_anchor); 4359 spin_lock_init(&data->rxlock); 4360 4361 if (id->driver_info & BTUSB_INTEL_NEW) { 4362 data->recv_event = btusb_recv_event_intel; 4363 data->recv_bulk = btusb_recv_bulk_intel; 4364 set_bit(BTUSB_BOOTLOADER, &data->flags); 4365 } else { 4366 data->recv_event = hci_recv_frame; 4367 data->recv_bulk = btusb_recv_bulk; 4368 } 4369 4370 hdev = hci_alloc_dev(); 4371 if (!hdev) 4372 return -ENOMEM; 4373 4374 hdev->bus = HCI_USB; 4375 hci_set_drvdata(hdev, data); 4376 4377 if (id->driver_info & BTUSB_AMP) 4378 hdev->dev_type = HCI_AMP; 4379 else 4380 hdev->dev_type = HCI_PRIMARY; 4381 4382 data->hdev = hdev; 4383 4384 SET_HCIDEV_DEV(hdev, &intf->dev); 4385 4386 reset_gpio = gpiod_get_optional(&data->udev->dev, "reset", 4387 GPIOD_OUT_LOW); 4388 if (IS_ERR(reset_gpio)) { 4389 err = PTR_ERR(reset_gpio); 4390 goto out_free_dev; 4391 } else if (reset_gpio) { 4392 data->reset_gpio = reset_gpio; 4393 } 4394 4395 hdev->open = btusb_open; 4396 hdev->close = btusb_close; 4397 hdev->flush = btusb_flush; 4398 hdev->send = btusb_send_frame; 4399 hdev->notify = btusb_notify; 4400 hdev->prevent_wake = btusb_prevent_wake; 4401 4402 #ifdef CONFIG_PM 4403 err = btusb_config_oob_wake(hdev); 4404 if (err) 4405 goto out_free_dev; 4406 4407 /* Marvell devices may need a specific chip configuration */ 4408 if (id->driver_info & BTUSB_MARVELL && data->oob_wake_irq) { 4409 err = marvell_config_oob_wake(hdev); 4410 if (err) 4411 goto out_free_dev; 4412 } 4413 #endif 4414 if (id->driver_info & BTUSB_CW6622) 4415 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks); 4416 4417 if (id->driver_info & BTUSB_BCM2045) 4418 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks); 4419 4420 if (id->driver_info & BTUSB_BCM92035) 4421 hdev->setup = btusb_setup_bcm92035; 4422 4423 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) && 4424 (id->driver_info & BTUSB_BCM_PATCHRAM)) { 4425 hdev->manufacturer = 15; 4426 hdev->setup = btbcm_setup_patchram; 4427 hdev->set_diag = btusb_bcm_set_diag; 4428 hdev->set_bdaddr = btbcm_set_bdaddr; 4429 4430 /* Broadcom LM_DIAG Interface numbers are hardcoded */ 4431 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2); 4432 } 4433 4434 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) && 4435 (id->driver_info & BTUSB_BCM_APPLE)) { 4436 hdev->manufacturer = 15; 4437 hdev->setup = btbcm_setup_apple; 4438 hdev->set_diag = btusb_bcm_set_diag; 4439 4440 /* Broadcom LM_DIAG Interface numbers are hardcoded */ 4441 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2); 4442 } 4443 4444 if (id->driver_info & BTUSB_INTEL) { 4445 hdev->manufacturer = 2; 4446 hdev->setup = btusb_setup_intel; 4447 hdev->shutdown = btusb_shutdown_intel; 4448 hdev->set_diag = btintel_set_diag_mfg; 4449 hdev->set_bdaddr = btintel_set_bdaddr; 4450 hdev->cmd_timeout = btusb_intel_cmd_timeout; 4451 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks); 4452 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); 4453 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks); 4454 } 4455 4456 if (id->driver_info & BTUSB_INTEL_NEW) { 4457 hdev->manufacturer = 2; 4458 hdev->send = btusb_send_frame_intel; 4459 hdev->setup = btusb_setup_intel_new; 4460 hdev->shutdown = btusb_shutdown_intel_new; 4461 hdev->hw_error = btintel_hw_error; 4462 hdev->set_diag = btintel_set_diag; 4463 hdev->set_bdaddr = btintel_set_bdaddr; 4464 hdev->cmd_timeout = btusb_intel_cmd_timeout; 4465 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks); 4466 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); 4467 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks); 4468 } 4469 4470 if (id->driver_info & BTUSB_INTEL_NEWGEN) { 4471 hdev->manufacturer = 2; 4472 hdev->send = btusb_send_frame_intel; 4473 hdev->setup = btusb_setup_intel_newgen; 4474 hdev->shutdown = btusb_shutdown_intel_new; 4475 hdev->hw_error = btintel_hw_error; 4476 hdev->set_diag = btintel_set_diag; 4477 hdev->set_bdaddr = btintel_set_bdaddr; 4478 hdev->cmd_timeout = btusb_intel_cmd_timeout; 4479 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks); 4480 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); 4481 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks); 4482 4483 data->recv_event = btusb_recv_event_intel; 4484 data->recv_bulk = btusb_recv_bulk_intel; 4485 set_bit(BTUSB_BOOTLOADER, &data->flags); 4486 } 4487 4488 if (id->driver_info & BTUSB_MARVELL) 4489 hdev->set_bdaddr = btusb_set_bdaddr_marvell; 4490 4491 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_MTK) && 4492 (id->driver_info & BTUSB_MEDIATEK)) { 4493 hdev->setup = btusb_mtk_setup; 4494 hdev->shutdown = btusb_mtk_shutdown; 4495 hdev->manufacturer = 70; 4496 set_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks); 4497 } 4498 4499 if (id->driver_info & BTUSB_SWAVE) { 4500 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks); 4501 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks); 4502 } 4503 4504 if (id->driver_info & BTUSB_INTEL_BOOT) { 4505 hdev->manufacturer = 2; 4506 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks); 4507 } 4508 4509 if (id->driver_info & BTUSB_ATH3012) { 4510 data->setup_on_usb = btusb_setup_qca; 4511 hdev->set_bdaddr = btusb_set_bdaddr_ath3012; 4512 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); 4513 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks); 4514 } 4515 4516 if (id->driver_info & BTUSB_QCA_ROME) { 4517 data->setup_on_usb = btusb_setup_qca; 4518 hdev->set_bdaddr = btusb_set_bdaddr_ath3012; 4519 hdev->cmd_timeout = btusb_qca_cmd_timeout; 4520 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); 4521 btusb_check_needs_reset_resume(intf); 4522 } 4523 4524 if (id->driver_info & BTUSB_QCA_WCN6855) { 4525 data->setup_on_usb = btusb_setup_qca; 4526 hdev->set_bdaddr = btusb_set_bdaddr_wcn6855; 4527 hdev->cmd_timeout = btusb_qca_cmd_timeout; 4528 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); 4529 } 4530 4531 if (id->driver_info & BTUSB_AMP) { 4532 /* AMP controllers do not support SCO packets */ 4533 data->isoc = NULL; 4534 } else { 4535 /* Interface orders are hardcoded in the specification */ 4536 data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1); 4537 data->isoc_ifnum = ifnum_base + 1; 4538 } 4539 4540 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_RTL) && 4541 (id->driver_info & BTUSB_REALTEK)) { 4542 hdev->setup = btrtl_setup_realtek; 4543 hdev->shutdown = btrtl_shutdown_realtek; 4544 hdev->cmd_timeout = btusb_rtl_cmd_timeout; 4545 4546 /* Realtek devices lose their updated firmware over global 4547 * suspend that means host doesn't send SET_FEATURE 4548 * (DEVICE_REMOTE_WAKEUP) 4549 */ 4550 set_bit(BTUSB_WAKEUP_DISABLE, &data->flags); 4551 if (btusb_find_altsetting(data, 1)) 4552 set_bit(BTUSB_USE_ALT1_FOR_WBS, &data->flags); 4553 else 4554 bt_dev_err(hdev, "Device does not support ALT setting 1"); 4555 } 4556 4557 if (!reset) 4558 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); 4559 4560 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) { 4561 if (!disable_scofix) 4562 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks); 4563 } 4564 4565 if (id->driver_info & BTUSB_BROKEN_ISOC) 4566 data->isoc = NULL; 4567 4568 if (id->driver_info & BTUSB_WIDEBAND_SPEECH) 4569 set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED, &hdev->quirks); 4570 4571 if (id->driver_info & BTUSB_VALID_LE_STATES) 4572 set_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks); 4573 4574 if (id->driver_info & BTUSB_DIGIANSWER) { 4575 data->cmdreq_type = USB_TYPE_VENDOR; 4576 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); 4577 } 4578 4579 if (id->driver_info & BTUSB_CSR) { 4580 struct usb_device *udev = data->udev; 4581 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice); 4582 4583 /* Old firmware would otherwise execute USB reset */ 4584 if (bcdDevice < 0x117) 4585 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); 4586 4587 /* This must be set first in case we disable it for fakes */ 4588 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); 4589 4590 /* Fake CSR devices with broken commands */ 4591 if (le16_to_cpu(udev->descriptor.idVendor) == 0x0a12 && 4592 le16_to_cpu(udev->descriptor.idProduct) == 0x0001) 4593 hdev->setup = btusb_setup_csr; 4594 } 4595 4596 if (id->driver_info & BTUSB_SNIFFER) { 4597 struct usb_device *udev = data->udev; 4598 4599 /* New sniffer firmware has crippled HCI interface */ 4600 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997) 4601 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks); 4602 } 4603 4604 if (id->driver_info & BTUSB_INTEL_BOOT) { 4605 /* A bug in the bootloader causes that interrupt interface is 4606 * only enabled after receiving SetInterface(0, AltSetting=0). 4607 */ 4608 err = usb_set_interface(data->udev, 0, 0); 4609 if (err < 0) { 4610 BT_ERR("failed to set interface 0, alt 0 %d", err); 4611 goto out_free_dev; 4612 } 4613 } 4614 4615 if (data->isoc) { 4616 err = usb_driver_claim_interface(&btusb_driver, 4617 data->isoc, data); 4618 if (err < 0) 4619 goto out_free_dev; 4620 } 4621 4622 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) && data->diag) { 4623 if (!usb_driver_claim_interface(&btusb_driver, 4624 data->diag, data)) 4625 __set_diag_interface(hdev); 4626 else 4627 data->diag = NULL; 4628 } 4629 4630 if (enable_autosuspend) 4631 usb_enable_autosuspend(data->udev); 4632 4633 err = hci_register_dev(hdev); 4634 if (err < 0) 4635 goto out_free_dev; 4636 4637 usb_set_intfdata(intf, data); 4638 4639 return 0; 4640 4641 out_free_dev: 4642 if (data->reset_gpio) 4643 gpiod_put(data->reset_gpio); 4644 hci_free_dev(hdev); 4645 return err; 4646 } 4647 4648 static void btusb_disconnect(struct usb_interface *intf) 4649 { 4650 struct btusb_data *data = usb_get_intfdata(intf); 4651 struct hci_dev *hdev; 4652 4653 BT_DBG("intf %p", intf); 4654 4655 if (!data) 4656 return; 4657 4658 hdev = data->hdev; 4659 usb_set_intfdata(data->intf, NULL); 4660 4661 if (data->isoc) 4662 usb_set_intfdata(data->isoc, NULL); 4663 4664 if (data->diag) 4665 usb_set_intfdata(data->diag, NULL); 4666 4667 hci_unregister_dev(hdev); 4668 4669 if (intf == data->intf) { 4670 if (data->isoc) 4671 usb_driver_release_interface(&btusb_driver, data->isoc); 4672 if (data->diag) 4673 usb_driver_release_interface(&btusb_driver, data->diag); 4674 } else if (intf == data->isoc) { 4675 if (data->diag) 4676 usb_driver_release_interface(&btusb_driver, data->diag); 4677 usb_driver_release_interface(&btusb_driver, data->intf); 4678 } else if (intf == data->diag) { 4679 usb_driver_release_interface(&btusb_driver, data->intf); 4680 if (data->isoc) 4681 usb_driver_release_interface(&btusb_driver, data->isoc); 4682 } 4683 4684 if (data->oob_wake_irq) 4685 device_init_wakeup(&data->udev->dev, false); 4686 4687 if (data->reset_gpio) 4688 gpiod_put(data->reset_gpio); 4689 4690 hci_free_dev(hdev); 4691 } 4692 4693 #ifdef CONFIG_PM 4694 static int btusb_suspend(struct usb_interface *intf, pm_message_t message) 4695 { 4696 struct btusb_data *data = usb_get_intfdata(intf); 4697 4698 BT_DBG("intf %p", intf); 4699 4700 if (data->suspend_count++) 4701 return 0; 4702 4703 spin_lock_irq(&data->txlock); 4704 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) { 4705 set_bit(BTUSB_SUSPENDING, &data->flags); 4706 spin_unlock_irq(&data->txlock); 4707 } else { 4708 spin_unlock_irq(&data->txlock); 4709 data->suspend_count--; 4710 return -EBUSY; 4711 } 4712 4713 cancel_work_sync(&data->work); 4714 4715 btusb_stop_traffic(data); 4716 usb_kill_anchored_urbs(&data->tx_anchor); 4717 4718 if (data->oob_wake_irq && device_may_wakeup(&data->udev->dev)) { 4719 set_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags); 4720 enable_irq_wake(data->oob_wake_irq); 4721 enable_irq(data->oob_wake_irq); 4722 } 4723 4724 /* For global suspend, Realtek devices lose the loaded fw 4725 * in them. But for autosuspend, firmware should remain. 4726 * Actually, it depends on whether the usb host sends 4727 * set feature (enable wakeup) or not. 4728 */ 4729 if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags)) { 4730 if (PMSG_IS_AUTO(message) && 4731 device_can_wakeup(&data->udev->dev)) 4732 data->udev->do_remote_wakeup = 1; 4733 else if (!PMSG_IS_AUTO(message)) 4734 data->udev->reset_resume = 1; 4735 } 4736 4737 return 0; 4738 } 4739 4740 static void play_deferred(struct btusb_data *data) 4741 { 4742 struct urb *urb; 4743 int err; 4744 4745 while ((urb = usb_get_from_anchor(&data->deferred))) { 4746 usb_anchor_urb(urb, &data->tx_anchor); 4747 4748 err = usb_submit_urb(urb, GFP_ATOMIC); 4749 if (err < 0) { 4750 if (err != -EPERM && err != -ENODEV) 4751 BT_ERR("%s urb %p submission failed (%d)", 4752 data->hdev->name, urb, -err); 4753 kfree(urb->setup_packet); 4754 usb_unanchor_urb(urb); 4755 usb_free_urb(urb); 4756 break; 4757 } 4758 4759 data->tx_in_flight++; 4760 usb_free_urb(urb); 4761 } 4762 4763 /* Cleanup the rest deferred urbs. */ 4764 while ((urb = usb_get_from_anchor(&data->deferred))) { 4765 kfree(urb->setup_packet); 4766 usb_free_urb(urb); 4767 } 4768 } 4769 4770 static int btusb_resume(struct usb_interface *intf) 4771 { 4772 struct btusb_data *data = usb_get_intfdata(intf); 4773 struct hci_dev *hdev = data->hdev; 4774 int err = 0; 4775 4776 BT_DBG("intf %p", intf); 4777 4778 if (--data->suspend_count) 4779 return 0; 4780 4781 /* Disable only if not already disabled (keep it balanced) */ 4782 if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) { 4783 disable_irq(data->oob_wake_irq); 4784 disable_irq_wake(data->oob_wake_irq); 4785 } 4786 4787 if (!test_bit(HCI_RUNNING, &hdev->flags)) 4788 goto done; 4789 4790 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) { 4791 err = btusb_submit_intr_urb(hdev, GFP_NOIO); 4792 if (err < 0) { 4793 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 4794 goto failed; 4795 } 4796 } 4797 4798 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) { 4799 err = btusb_submit_bulk_urb(hdev, GFP_NOIO); 4800 if (err < 0) { 4801 clear_bit(BTUSB_BULK_RUNNING, &data->flags); 4802 goto failed; 4803 } 4804 4805 btusb_submit_bulk_urb(hdev, GFP_NOIO); 4806 } 4807 4808 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) { 4809 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0) 4810 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 4811 else 4812 btusb_submit_isoc_urb(hdev, GFP_NOIO); 4813 } 4814 4815 spin_lock_irq(&data->txlock); 4816 play_deferred(data); 4817 clear_bit(BTUSB_SUSPENDING, &data->flags); 4818 spin_unlock_irq(&data->txlock); 4819 schedule_work(&data->work); 4820 4821 return 0; 4822 4823 failed: 4824 usb_scuttle_anchored_urbs(&data->deferred); 4825 done: 4826 spin_lock_irq(&data->txlock); 4827 clear_bit(BTUSB_SUSPENDING, &data->flags); 4828 spin_unlock_irq(&data->txlock); 4829 4830 return err; 4831 } 4832 #endif 4833 4834 static struct usb_driver btusb_driver = { 4835 .name = "btusb", 4836 .probe = btusb_probe, 4837 .disconnect = btusb_disconnect, 4838 #ifdef CONFIG_PM 4839 .suspend = btusb_suspend, 4840 .resume = btusb_resume, 4841 #endif 4842 .id_table = btusb_table, 4843 .supports_autosuspend = 1, 4844 .disable_hub_initiated_lpm = 1, 4845 }; 4846 4847 module_usb_driver(btusb_driver); 4848 4849 module_param(disable_scofix, bool, 0644); 4850 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size"); 4851 4852 module_param(force_scofix, bool, 0644); 4853 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size"); 4854 4855 module_param(enable_autosuspend, bool, 0644); 4856 MODULE_PARM_DESC(enable_autosuspend, "Enable USB autosuspend by default"); 4857 4858 module_param(reset, bool, 0644); 4859 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization"); 4860 4861 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); 4862 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION); 4863 MODULE_VERSION(VERSION); 4864 MODULE_LICENSE("GPL"); 4865