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 <linux/debugfs.h> 20 #include <asm/unaligned.h> 21 22 #include <net/bluetooth/bluetooth.h> 23 #include <net/bluetooth/hci_core.h> 24 25 #include "btintel.h" 26 #include "btbcm.h" 27 #include "btrtl.h" 28 #include "btmtk.h" 29 30 #define VERSION "0.8" 31 32 static bool disable_scofix; 33 static bool force_scofix; 34 static bool enable_autosuspend = IS_ENABLED(CONFIG_BT_HCIBTUSB_AUTOSUSPEND); 35 static bool reset = true; 36 37 static struct usb_driver btusb_driver; 38 39 #define BTUSB_IGNORE 0x01 40 #define BTUSB_DIGIANSWER 0x02 41 #define BTUSB_CSR 0x04 42 #define BTUSB_SNIFFER 0x08 43 #define BTUSB_BCM92035 0x10 44 #define BTUSB_BROKEN_ISOC 0x20 45 #define BTUSB_WRONG_SCO_MTU 0x40 46 #define BTUSB_ATH3012 0x80 47 #define BTUSB_INTEL_COMBINED 0x100 48 #define BTUSB_INTEL_BOOT 0x200 49 #define BTUSB_BCM_PATCHRAM 0x400 50 #define BTUSB_MARVELL 0x800 51 #define BTUSB_SWAVE 0x1000 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_BROKEN_SHUTDOWN_LED 0x2000000 64 #define BTUSB_INTEL_BROKEN_INITIAL_NCMD 0x4000000 65 66 static const struct usb_device_id btusb_table[] = { 67 /* Generic Bluetooth USB device */ 68 { USB_DEVICE_INFO(0xe0, 0x01, 0x01) }, 69 70 /* Generic Bluetooth AMP device */ 71 { USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP }, 72 73 /* Generic Bluetooth USB interface */ 74 { USB_INTERFACE_INFO(0xe0, 0x01, 0x01) }, 75 76 /* Apple-specific (Broadcom) devices */ 77 { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01), 78 .driver_info = BTUSB_BCM_APPLE | BTUSB_IFNUM_2 }, 79 80 /* MediaTek MT76x0E */ 81 { USB_DEVICE(0x0e8d, 0x763f) }, 82 83 /* Broadcom SoftSailing reporting vendor specific */ 84 { USB_DEVICE(0x0a5c, 0x21e1) }, 85 86 /* Apple MacBookPro 7,1 */ 87 { USB_DEVICE(0x05ac, 0x8213) }, 88 89 /* Apple iMac11,1 */ 90 { USB_DEVICE(0x05ac, 0x8215) }, 91 92 /* Apple MacBookPro6,2 */ 93 { USB_DEVICE(0x05ac, 0x8218) }, 94 95 /* Apple MacBookAir3,1, MacBookAir3,2 */ 96 { USB_DEVICE(0x05ac, 0x821b) }, 97 98 /* Apple MacBookAir4,1 */ 99 { USB_DEVICE(0x05ac, 0x821f) }, 100 101 /* Apple MacBookPro8,2 */ 102 { USB_DEVICE(0x05ac, 0x821a) }, 103 104 /* Apple MacMini5,1 */ 105 { USB_DEVICE(0x05ac, 0x8281) }, 106 107 /* AVM BlueFRITZ! USB v2.0 */ 108 { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE }, 109 110 /* Bluetooth Ultraport Module from IBM */ 111 { USB_DEVICE(0x04bf, 0x030a) }, 112 113 /* ALPS Modules with non-standard id */ 114 { USB_DEVICE(0x044e, 0x3001) }, 115 { USB_DEVICE(0x044e, 0x3002) }, 116 117 /* Ericsson with non-standard id */ 118 { USB_DEVICE(0x0bdb, 0x1002) }, 119 120 /* Canyon CN-BTU1 with HID interfaces */ 121 { USB_DEVICE(0x0c10, 0x0000) }, 122 123 /* Broadcom BCM20702B0 (Dynex/Insignia) */ 124 { USB_DEVICE(0x19ff, 0x0239), .driver_info = BTUSB_BCM_PATCHRAM }, 125 126 /* Broadcom BCM43142A0 (Foxconn/Lenovo) */ 127 { USB_VENDOR_AND_INTERFACE_INFO(0x105b, 0xff, 0x01, 0x01), 128 .driver_info = BTUSB_BCM_PATCHRAM }, 129 130 /* Broadcom BCM920703 (HTC Vive) */ 131 { USB_VENDOR_AND_INTERFACE_INFO(0x0bb4, 0xff, 0x01, 0x01), 132 .driver_info = BTUSB_BCM_PATCHRAM }, 133 134 /* Foxconn - Hon Hai */ 135 { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01), 136 .driver_info = BTUSB_BCM_PATCHRAM }, 137 138 /* Lite-On Technology - Broadcom based */ 139 { USB_VENDOR_AND_INTERFACE_INFO(0x04ca, 0xff, 0x01, 0x01), 140 .driver_info = BTUSB_BCM_PATCHRAM }, 141 142 /* Broadcom devices with vendor specific id */ 143 { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01), 144 .driver_info = BTUSB_BCM_PATCHRAM }, 145 146 /* ASUSTek Computer - Broadcom based */ 147 { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01), 148 .driver_info = BTUSB_BCM_PATCHRAM }, 149 150 /* Belkin F8065bf - Broadcom based */ 151 { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01), 152 .driver_info = BTUSB_BCM_PATCHRAM }, 153 154 /* IMC Networks - Broadcom based */ 155 { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01), 156 .driver_info = BTUSB_BCM_PATCHRAM }, 157 158 /* Dell Computer - Broadcom based */ 159 { USB_VENDOR_AND_INTERFACE_INFO(0x413c, 0xff, 0x01, 0x01), 160 .driver_info = BTUSB_BCM_PATCHRAM }, 161 162 /* Toshiba Corp - Broadcom based */ 163 { USB_VENDOR_AND_INTERFACE_INFO(0x0930, 0xff, 0x01, 0x01), 164 .driver_info = BTUSB_BCM_PATCHRAM }, 165 166 /* Intel Bluetooth USB Bootloader (RAM module) */ 167 { USB_DEVICE(0x8087, 0x0a5a), 168 .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC }, 169 170 { } /* Terminating entry */ 171 }; 172 173 MODULE_DEVICE_TABLE(usb, btusb_table); 174 175 static const struct usb_device_id blacklist_table[] = { 176 /* CSR BlueCore devices */ 177 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR }, 178 179 /* Broadcom BCM2033 without firmware */ 180 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE }, 181 182 /* Broadcom BCM2045 devices */ 183 { USB_DEVICE(0x0a5c, 0x2045), .driver_info = BTUSB_BCM2045 }, 184 185 /* Atheros 3011 with sflash firmware */ 186 { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE }, 187 { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE }, 188 { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE }, 189 { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE }, 190 { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE }, 191 { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE }, 192 { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE }, 193 194 /* Atheros AR9285 Malbec with sflash firmware */ 195 { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE }, 196 197 /* Atheros 3012 with sflash firmware */ 198 { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 }, 199 { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 }, 200 { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 }, 201 { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 }, 202 { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 }, 203 { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 }, 204 { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 }, 205 { USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 }, 206 { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 }, 207 { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 }, 208 { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 }, 209 { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 }, 210 { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 }, 211 { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 }, 212 { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 }, 213 { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 }, 214 { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 }, 215 { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 }, 216 { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 }, 217 { USB_DEVICE(0x04ca, 0x3018), .driver_info = BTUSB_ATH3012 }, 218 { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 }, 219 { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 }, 220 { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 }, 221 { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 }, 222 { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 }, 223 { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 }, 224 { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 }, 225 { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 }, 226 { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 }, 227 { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 }, 228 { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 }, 229 { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 }, 230 { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 }, 231 { USB_DEVICE(0x0cf3, 0x817b), .driver_info = BTUSB_ATH3012 }, 232 { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 }, 233 { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 }, 234 { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 }, 235 { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 }, 236 { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 }, 237 { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 }, 238 { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 }, 239 { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 }, 240 { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 }, 241 { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 }, 242 { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 }, 243 { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 }, 244 { USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 }, 245 { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 }, 246 { USB_DEVICE(0x13d3, 0x3487), .driver_info = BTUSB_ATH3012 }, 247 { USB_DEVICE(0x13d3, 0x3490), .driver_info = BTUSB_ATH3012 }, 248 249 /* Atheros AR5BBU12 with sflash firmware */ 250 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE }, 251 252 /* Atheros AR5BBU12 with sflash firmware */ 253 { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 }, 254 { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 }, 255 256 /* QCA ROME chipset */ 257 { USB_DEVICE(0x0cf3, 0x535b), .driver_info = BTUSB_QCA_ROME | 258 BTUSB_WIDEBAND_SPEECH }, 259 { USB_DEVICE(0x0cf3, 0xe007), .driver_info = BTUSB_QCA_ROME | 260 BTUSB_WIDEBAND_SPEECH }, 261 { USB_DEVICE(0x0cf3, 0xe009), .driver_info = BTUSB_QCA_ROME | 262 BTUSB_WIDEBAND_SPEECH }, 263 { USB_DEVICE(0x0cf3, 0xe010), .driver_info = BTUSB_QCA_ROME | 264 BTUSB_WIDEBAND_SPEECH }, 265 { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME | 266 BTUSB_WIDEBAND_SPEECH }, 267 { USB_DEVICE(0x0cf3, 0xe301), .driver_info = BTUSB_QCA_ROME | 268 BTUSB_WIDEBAND_SPEECH }, 269 { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME | 270 BTUSB_WIDEBAND_SPEECH }, 271 { USB_DEVICE(0x0cf3, 0xe500), .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 BTUSB_VALID_LE_STATES }, 300 { USB_DEVICE(0x0489, 0xe0cc), .driver_info = BTUSB_QCA_WCN6855 | 301 BTUSB_WIDEBAND_SPEECH | 302 BTUSB_VALID_LE_STATES }, 303 { USB_DEVICE(0x0489, 0xe0d6), .driver_info = BTUSB_QCA_WCN6855 | 304 BTUSB_WIDEBAND_SPEECH | 305 BTUSB_VALID_LE_STATES }, 306 { USB_DEVICE(0x0489, 0xe0e3), .driver_info = BTUSB_QCA_WCN6855 | 307 BTUSB_WIDEBAND_SPEECH | 308 BTUSB_VALID_LE_STATES }, 309 { USB_DEVICE(0x10ab, 0x9309), .driver_info = BTUSB_QCA_WCN6855 | 310 BTUSB_WIDEBAND_SPEECH | 311 BTUSB_VALID_LE_STATES }, 312 { USB_DEVICE(0x10ab, 0x9409), .driver_info = BTUSB_QCA_WCN6855 | 313 BTUSB_WIDEBAND_SPEECH | 314 BTUSB_VALID_LE_STATES }, 315 { USB_DEVICE(0x0489, 0xe0d0), .driver_info = BTUSB_QCA_WCN6855 | 316 BTUSB_WIDEBAND_SPEECH | 317 BTUSB_VALID_LE_STATES }, 318 319 /* Broadcom BCM2035 */ 320 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 }, 321 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU }, 322 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU }, 323 324 /* Broadcom BCM2045 */ 325 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU }, 326 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU }, 327 328 /* IBM/Lenovo ThinkPad with Broadcom chip */ 329 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU }, 330 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU }, 331 332 /* HP laptop with Broadcom chip */ 333 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU }, 334 335 /* Dell laptop with Broadcom chip */ 336 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU }, 337 338 /* Dell Wireless 370 and 410 devices */ 339 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU }, 340 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU }, 341 342 /* Belkin F8T012 and F8T013 devices */ 343 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU }, 344 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU }, 345 346 /* Asus WL-BTD202 device */ 347 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU }, 348 349 /* Kensington Bluetooth USB adapter */ 350 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU }, 351 352 /* RTX Telecom based adapters with buggy SCO support */ 353 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC }, 354 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC }, 355 356 /* CONWISE Technology based adapters with buggy SCO support */ 357 { USB_DEVICE(0x0e5e, 0x6622), 358 .driver_info = BTUSB_BROKEN_ISOC | BTUSB_CW6622}, 359 360 /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */ 361 { USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE }, 362 363 /* Digianswer devices */ 364 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER }, 365 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE }, 366 367 /* CSR BlueCore Bluetooth Sniffer */ 368 { USB_DEVICE(0x0a12, 0x0002), 369 .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC }, 370 371 /* Frontline ComProbe Bluetooth Sniffer */ 372 { USB_DEVICE(0x16d3, 0x0002), 373 .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC }, 374 375 /* Marvell Bluetooth devices */ 376 { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL }, 377 { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL }, 378 { USB_DEVICE(0x1286, 0x204e), .driver_info = BTUSB_MARVELL }, 379 380 /* Intel Bluetooth devices */ 381 { USB_DEVICE(0x8087, 0x0025), .driver_info = BTUSB_INTEL_COMBINED }, 382 { USB_DEVICE(0x8087, 0x0026), .driver_info = BTUSB_INTEL_COMBINED }, 383 { USB_DEVICE(0x8087, 0x0029), .driver_info = BTUSB_INTEL_COMBINED }, 384 { USB_DEVICE(0x8087, 0x0032), .driver_info = BTUSB_INTEL_COMBINED }, 385 { USB_DEVICE(0x8087, 0x0033), .driver_info = BTUSB_INTEL_COMBINED }, 386 { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR }, 387 { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL_COMBINED | 388 BTUSB_INTEL_BROKEN_INITIAL_NCMD | 389 BTUSB_INTEL_BROKEN_SHUTDOWN_LED }, 390 { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL_COMBINED | 391 BTUSB_INTEL_BROKEN_SHUTDOWN_LED }, 392 { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_COMBINED }, 393 { USB_DEVICE(0x8087, 0x0aa7), .driver_info = BTUSB_INTEL_COMBINED | 394 BTUSB_INTEL_BROKEN_SHUTDOWN_LED }, 395 { USB_DEVICE(0x8087, 0x0aaa), .driver_info = BTUSB_INTEL_COMBINED }, 396 397 /* Other Intel Bluetooth devices */ 398 { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01), 399 .driver_info = BTUSB_IGNORE }, 400 401 /* Realtek 8822CE Bluetooth devices */ 402 { USB_DEVICE(0x0bda, 0xb00c), .driver_info = BTUSB_REALTEK | 403 BTUSB_WIDEBAND_SPEECH }, 404 { USB_DEVICE(0x0bda, 0xc822), .driver_info = BTUSB_REALTEK | 405 BTUSB_WIDEBAND_SPEECH }, 406 407 /* Realtek 8852AE Bluetooth devices */ 408 { USB_DEVICE(0x0bda, 0xc852), .driver_info = BTUSB_REALTEK | 409 BTUSB_WIDEBAND_SPEECH }, 410 { USB_DEVICE(0x0bda, 0x385a), .driver_info = BTUSB_REALTEK | 411 BTUSB_WIDEBAND_SPEECH }, 412 { USB_DEVICE(0x0bda, 0x4852), .driver_info = BTUSB_REALTEK | 413 BTUSB_WIDEBAND_SPEECH }, 414 { USB_DEVICE(0x04c5, 0x165c), .driver_info = BTUSB_REALTEK | 415 BTUSB_WIDEBAND_SPEECH }, 416 { USB_DEVICE(0x04ca, 0x4006), .driver_info = BTUSB_REALTEK | 417 BTUSB_WIDEBAND_SPEECH }, 418 419 /* Realtek Bluetooth devices */ 420 { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01), 421 .driver_info = BTUSB_REALTEK }, 422 423 /* MediaTek Bluetooth devices */ 424 { USB_VENDOR_AND_INTERFACE_INFO(0x0e8d, 0xe0, 0x01, 0x01), 425 .driver_info = BTUSB_MEDIATEK | 426 BTUSB_WIDEBAND_SPEECH | 427 BTUSB_VALID_LE_STATES }, 428 429 /* Additional MediaTek MT7615E Bluetooth devices */ 430 { USB_DEVICE(0x13d3, 0x3560), .driver_info = BTUSB_MEDIATEK}, 431 432 /* Additional MediaTek MT7668 Bluetooth devices */ 433 { USB_DEVICE(0x043e, 0x3109), .driver_info = BTUSB_MEDIATEK | 434 BTUSB_WIDEBAND_SPEECH | 435 BTUSB_VALID_LE_STATES }, 436 437 /* Additional MediaTek MT7921 Bluetooth devices */ 438 { USB_DEVICE(0x04ca, 0x3802), .driver_info = BTUSB_MEDIATEK | 439 BTUSB_WIDEBAND_SPEECH | 440 BTUSB_VALID_LE_STATES }, 441 { USB_DEVICE(0x13d3, 0x3563), .driver_info = BTUSB_MEDIATEK | 442 BTUSB_WIDEBAND_SPEECH | 443 BTUSB_VALID_LE_STATES }, 444 { USB_DEVICE(0x13d3, 0x3564), .driver_info = BTUSB_MEDIATEK | 445 BTUSB_WIDEBAND_SPEECH | 446 BTUSB_VALID_LE_STATES }, 447 { USB_DEVICE(0x0489, 0xe0cd), .driver_info = BTUSB_MEDIATEK | 448 BTUSB_WIDEBAND_SPEECH | 449 BTUSB_VALID_LE_STATES }, 450 451 /* MediaTek MT7922A Bluetooth devices */ 452 { USB_DEVICE(0x0489, 0xe0d8), .driver_info = BTUSB_MEDIATEK | 453 BTUSB_WIDEBAND_SPEECH | 454 BTUSB_VALID_LE_STATES }, 455 { USB_DEVICE(0x0489, 0xe0d9), .driver_info = BTUSB_MEDIATEK | 456 BTUSB_WIDEBAND_SPEECH | 457 BTUSB_VALID_LE_STATES }, 458 459 /* Additional Realtek 8723AE Bluetooth devices */ 460 { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK }, 461 { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK }, 462 463 /* Additional Realtek 8723BE Bluetooth devices */ 464 { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK }, 465 { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK }, 466 { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK }, 467 { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK }, 468 { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK }, 469 { USB_DEVICE(0x13d3, 0x3494), .driver_info = BTUSB_REALTEK }, 470 471 /* Additional Realtek 8723BU Bluetooth devices */ 472 { USB_DEVICE(0x7392, 0xa611), .driver_info = BTUSB_REALTEK }, 473 474 /* Additional Realtek 8723DE Bluetooth devices */ 475 { USB_DEVICE(0x0bda, 0xb009), .driver_info = BTUSB_REALTEK }, 476 { USB_DEVICE(0x2ff8, 0xb011), .driver_info = BTUSB_REALTEK }, 477 478 /* Additional Realtek 8761B Bluetooth devices */ 479 { USB_DEVICE(0x2357, 0x0604), .driver_info = BTUSB_REALTEK | 480 BTUSB_WIDEBAND_SPEECH }, 481 482 /* Additional Realtek 8761BU Bluetooth devices */ 483 { USB_DEVICE(0x0b05, 0x190e), .driver_info = BTUSB_REALTEK | 484 BTUSB_WIDEBAND_SPEECH }, 485 486 /* Additional Realtek 8821AE Bluetooth devices */ 487 { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK }, 488 { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK }, 489 { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK }, 490 { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK }, 491 { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK }, 492 493 /* Additional Realtek 8822BE Bluetooth devices */ 494 { USB_DEVICE(0x13d3, 0x3526), .driver_info = BTUSB_REALTEK }, 495 { USB_DEVICE(0x0b05, 0x185c), .driver_info = BTUSB_REALTEK }, 496 497 /* Additional Realtek 8822CE Bluetooth devices */ 498 { USB_DEVICE(0x04ca, 0x4005), .driver_info = BTUSB_REALTEK | 499 BTUSB_WIDEBAND_SPEECH }, 500 { USB_DEVICE(0x04c5, 0x161f), .driver_info = BTUSB_REALTEK | 501 BTUSB_WIDEBAND_SPEECH }, 502 { USB_DEVICE(0x0b05, 0x18ef), .driver_info = BTUSB_REALTEK | 503 BTUSB_WIDEBAND_SPEECH }, 504 { USB_DEVICE(0x13d3, 0x3548), .driver_info = BTUSB_REALTEK | 505 BTUSB_WIDEBAND_SPEECH }, 506 { USB_DEVICE(0x13d3, 0x3549), .driver_info = BTUSB_REALTEK | 507 BTUSB_WIDEBAND_SPEECH }, 508 { USB_DEVICE(0x13d3, 0x3553), .driver_info = BTUSB_REALTEK | 509 BTUSB_WIDEBAND_SPEECH }, 510 { USB_DEVICE(0x13d3, 0x3555), .driver_info = BTUSB_REALTEK | 511 BTUSB_WIDEBAND_SPEECH }, 512 { USB_DEVICE(0x2ff8, 0x3051), .driver_info = BTUSB_REALTEK | 513 BTUSB_WIDEBAND_SPEECH }, 514 { USB_DEVICE(0x1358, 0xc123), .driver_info = BTUSB_REALTEK | 515 BTUSB_WIDEBAND_SPEECH }, 516 { USB_DEVICE(0x0bda, 0xc123), .driver_info = BTUSB_REALTEK | 517 BTUSB_WIDEBAND_SPEECH }, 518 { USB_DEVICE(0x0cb5, 0xc547), .driver_info = BTUSB_REALTEK | 519 BTUSB_WIDEBAND_SPEECH }, 520 521 /* Silicon Wave based devices */ 522 { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE }, 523 524 { } /* Terminating entry */ 525 }; 526 527 /* The Bluetooth USB module build into some devices needs to be reset on resume, 528 * this is a problem with the platform (likely shutting off all power) not with 529 * the module itself. So we use a DMI list to match known broken platforms. 530 */ 531 static const struct dmi_system_id btusb_needs_reset_resume_table[] = { 532 { 533 /* Dell OptiPlex 3060 (QCA ROME device 0cf3:e007) */ 534 .matches = { 535 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 536 DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 3060"), 537 }, 538 }, 539 { 540 /* Dell XPS 9360 (QCA ROME device 0cf3:e300) */ 541 .matches = { 542 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 543 DMI_MATCH(DMI_PRODUCT_NAME, "XPS 13 9360"), 544 }, 545 }, 546 { 547 /* Dell Inspiron 5565 (QCA ROME device 0cf3:e009) */ 548 .matches = { 549 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 550 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5565"), 551 }, 552 }, 553 {} 554 }; 555 556 #define BTUSB_MAX_ISOC_FRAMES 10 557 558 #define BTUSB_INTR_RUNNING 0 559 #define BTUSB_BULK_RUNNING 1 560 #define BTUSB_ISOC_RUNNING 2 561 #define BTUSB_SUSPENDING 3 562 #define BTUSB_DID_ISO_RESUME 4 563 #define BTUSB_BOOTLOADER 5 564 #define BTUSB_DOWNLOADING 6 565 #define BTUSB_FIRMWARE_LOADED 7 566 #define BTUSB_FIRMWARE_FAILED 8 567 #define BTUSB_BOOTING 9 568 #define BTUSB_DIAG_RUNNING 10 569 #define BTUSB_OOB_WAKE_ENABLED 11 570 #define BTUSB_HW_RESET_ACTIVE 12 571 #define BTUSB_TX_WAIT_VND_EVT 13 572 #define BTUSB_WAKEUP_AUTOSUSPEND 14 573 #define BTUSB_USE_ALT3_FOR_WBS 15 574 575 struct btusb_data { 576 struct hci_dev *hdev; 577 struct usb_device *udev; 578 struct usb_interface *intf; 579 struct usb_interface *isoc; 580 struct usb_interface *diag; 581 unsigned isoc_ifnum; 582 583 unsigned long flags; 584 585 bool poll_sync; 586 int intr_interval; 587 struct work_struct work; 588 struct work_struct waker; 589 struct delayed_work rx_work; 590 591 struct sk_buff_head acl_q; 592 593 struct usb_anchor deferred; 594 struct usb_anchor tx_anchor; 595 int tx_in_flight; 596 spinlock_t txlock; 597 598 struct usb_anchor intr_anchor; 599 struct usb_anchor bulk_anchor; 600 struct usb_anchor isoc_anchor; 601 struct usb_anchor diag_anchor; 602 struct usb_anchor ctrl_anchor; 603 spinlock_t rxlock; 604 605 struct sk_buff *evt_skb; 606 struct sk_buff *acl_skb; 607 struct sk_buff *sco_skb; 608 609 struct usb_endpoint_descriptor *intr_ep; 610 struct usb_endpoint_descriptor *bulk_tx_ep; 611 struct usb_endpoint_descriptor *bulk_rx_ep; 612 struct usb_endpoint_descriptor *isoc_tx_ep; 613 struct usb_endpoint_descriptor *isoc_rx_ep; 614 struct usb_endpoint_descriptor *diag_tx_ep; 615 struct usb_endpoint_descriptor *diag_rx_ep; 616 617 struct gpio_desc *reset_gpio; 618 619 __u8 cmdreq_type; 620 __u8 cmdreq; 621 622 unsigned int sco_num; 623 unsigned int air_mode; 624 bool usb_alt6_packet_flow; 625 int isoc_altsetting; 626 int suspend_count; 627 628 int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb); 629 int (*recv_acl)(struct hci_dev *hdev, struct sk_buff *skb); 630 int (*recv_bulk)(struct btusb_data *data, void *buffer, int count); 631 632 int (*setup_on_usb)(struct hci_dev *hdev); 633 634 int oob_wake_irq; /* irq for out-of-band wake-on-bt */ 635 unsigned cmd_timeout_cnt; 636 }; 637 638 static void btusb_intel_cmd_timeout(struct hci_dev *hdev) 639 { 640 struct btusb_data *data = hci_get_drvdata(hdev); 641 struct gpio_desc *reset_gpio = data->reset_gpio; 642 643 if (++data->cmd_timeout_cnt < 5) 644 return; 645 646 if (!reset_gpio) { 647 bt_dev_err(hdev, "No way to reset. Ignoring and continuing"); 648 return; 649 } 650 651 /* 652 * Toggle the hard reset line if the platform provides one. The reset 653 * is going to yank the device off the USB and then replug. So doing 654 * once is enough. The cleanup is handled correctly on the way out 655 * (standard USB disconnect), and the new device is detected cleanly 656 * and bound to the driver again like it should be. 657 */ 658 if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) { 659 bt_dev_err(hdev, "last reset failed? Not resetting again"); 660 return; 661 } 662 663 bt_dev_err(hdev, "Initiating HW reset via gpio"); 664 gpiod_set_value_cansleep(reset_gpio, 1); 665 msleep(100); 666 gpiod_set_value_cansleep(reset_gpio, 0); 667 } 668 669 static void btusb_rtl_cmd_timeout(struct hci_dev *hdev) 670 { 671 struct btusb_data *data = hci_get_drvdata(hdev); 672 struct gpio_desc *reset_gpio = data->reset_gpio; 673 674 if (++data->cmd_timeout_cnt < 5) 675 return; 676 677 if (!reset_gpio) { 678 bt_dev_err(hdev, "No gpio to reset Realtek device, ignoring"); 679 return; 680 } 681 682 /* Toggle the hard reset line. The Realtek device is going to 683 * yank itself off the USB and then replug. The cleanup is handled 684 * correctly on the way out (standard USB disconnect), and the new 685 * device is detected cleanly and bound to the driver again like 686 * it should be. 687 */ 688 if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) { 689 bt_dev_err(hdev, "last reset failed? Not resetting again"); 690 return; 691 } 692 693 bt_dev_err(hdev, "Reset Realtek device via gpio"); 694 gpiod_set_value_cansleep(reset_gpio, 1); 695 msleep(200); 696 gpiod_set_value_cansleep(reset_gpio, 0); 697 } 698 699 static void btusb_qca_cmd_timeout(struct hci_dev *hdev) 700 { 701 struct btusb_data *data = hci_get_drvdata(hdev); 702 struct gpio_desc *reset_gpio = data->reset_gpio; 703 int err; 704 705 if (++data->cmd_timeout_cnt < 5) 706 return; 707 708 if (reset_gpio) { 709 bt_dev_err(hdev, "Reset qca device via bt_en gpio"); 710 711 /* Toggle the hard reset line. The qca bt device is going to 712 * yank itself off the USB and then replug. The cleanup is handled 713 * correctly on the way out (standard USB disconnect), and the new 714 * device is detected cleanly and bound to the driver again like 715 * it should be. 716 */ 717 if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) { 718 bt_dev_err(hdev, "last reset failed? Not resetting again"); 719 return; 720 } 721 722 gpiod_set_value_cansleep(reset_gpio, 0); 723 msleep(200); 724 gpiod_set_value_cansleep(reset_gpio, 1); 725 726 return; 727 } 728 729 bt_dev_err(hdev, "Multiple cmd timeouts seen. Resetting usb device."); 730 /* This is not an unbalanced PM reference since the device will reset */ 731 err = usb_autopm_get_interface(data->intf); 732 if (!err) 733 usb_queue_reset_device(data->intf); 734 else 735 bt_dev_err(hdev, "Failed usb_autopm_get_interface with %d", err); 736 } 737 738 static inline void btusb_free_frags(struct btusb_data *data) 739 { 740 unsigned long flags; 741 742 spin_lock_irqsave(&data->rxlock, flags); 743 744 kfree_skb(data->evt_skb); 745 data->evt_skb = NULL; 746 747 kfree_skb(data->acl_skb); 748 data->acl_skb = NULL; 749 750 kfree_skb(data->sco_skb); 751 data->sco_skb = NULL; 752 753 spin_unlock_irqrestore(&data->rxlock, flags); 754 } 755 756 static int btusb_recv_event(struct btusb_data *data, struct sk_buff *skb) 757 { 758 if (data->intr_interval) { 759 /* Trigger dequeue immediatelly if an event is received */ 760 schedule_delayed_work(&data->rx_work, 0); 761 } 762 763 return data->recv_event(data->hdev, skb); 764 } 765 766 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count) 767 { 768 struct sk_buff *skb; 769 unsigned long flags; 770 int err = 0; 771 772 spin_lock_irqsave(&data->rxlock, flags); 773 skb = data->evt_skb; 774 775 while (count) { 776 int len; 777 778 if (!skb) { 779 skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC); 780 if (!skb) { 781 err = -ENOMEM; 782 break; 783 } 784 785 hci_skb_pkt_type(skb) = HCI_EVENT_PKT; 786 hci_skb_expect(skb) = HCI_EVENT_HDR_SIZE; 787 } 788 789 len = min_t(uint, hci_skb_expect(skb), count); 790 skb_put_data(skb, buffer, len); 791 792 count -= len; 793 buffer += len; 794 hci_skb_expect(skb) -= len; 795 796 if (skb->len == HCI_EVENT_HDR_SIZE) { 797 /* Complete event header */ 798 hci_skb_expect(skb) = hci_event_hdr(skb)->plen; 799 800 if (skb_tailroom(skb) < hci_skb_expect(skb)) { 801 kfree_skb(skb); 802 skb = NULL; 803 804 err = -EILSEQ; 805 break; 806 } 807 } 808 809 if (!hci_skb_expect(skb)) { 810 /* Complete frame */ 811 btusb_recv_event(data, skb); 812 skb = NULL; 813 } 814 } 815 816 data->evt_skb = skb; 817 spin_unlock_irqrestore(&data->rxlock, flags); 818 819 return err; 820 } 821 822 static int btusb_recv_acl(struct btusb_data *data, struct sk_buff *skb) 823 { 824 /* Only queue ACL packet if intr_interval is set as it means 825 * force_poll_sync has been enabled. 826 */ 827 if (!data->intr_interval) 828 return data->recv_acl(data->hdev, skb); 829 830 skb_queue_tail(&data->acl_q, skb); 831 schedule_delayed_work(&data->rx_work, data->intr_interval); 832 833 return 0; 834 } 835 836 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count) 837 { 838 struct sk_buff *skb; 839 unsigned long flags; 840 int err = 0; 841 842 spin_lock_irqsave(&data->rxlock, flags); 843 skb = data->acl_skb; 844 845 while (count) { 846 int len; 847 848 if (!skb) { 849 skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC); 850 if (!skb) { 851 err = -ENOMEM; 852 break; 853 } 854 855 hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT; 856 hci_skb_expect(skb) = HCI_ACL_HDR_SIZE; 857 } 858 859 len = min_t(uint, hci_skb_expect(skb), count); 860 skb_put_data(skb, buffer, len); 861 862 count -= len; 863 buffer += len; 864 hci_skb_expect(skb) -= len; 865 866 if (skb->len == HCI_ACL_HDR_SIZE) { 867 __le16 dlen = hci_acl_hdr(skb)->dlen; 868 869 /* Complete ACL header */ 870 hci_skb_expect(skb) = __le16_to_cpu(dlen); 871 872 if (skb_tailroom(skb) < hci_skb_expect(skb)) { 873 kfree_skb(skb); 874 skb = NULL; 875 876 err = -EILSEQ; 877 break; 878 } 879 } 880 881 if (!hci_skb_expect(skb)) { 882 /* Complete frame */ 883 btusb_recv_acl(data, skb); 884 skb = NULL; 885 } 886 } 887 888 data->acl_skb = skb; 889 spin_unlock_irqrestore(&data->rxlock, flags); 890 891 return err; 892 } 893 894 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count) 895 { 896 struct sk_buff *skb; 897 unsigned long flags; 898 int err = 0; 899 900 spin_lock_irqsave(&data->rxlock, flags); 901 skb = data->sco_skb; 902 903 while (count) { 904 int len; 905 906 if (!skb) { 907 skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC); 908 if (!skb) { 909 err = -ENOMEM; 910 break; 911 } 912 913 hci_skb_pkt_type(skb) = HCI_SCODATA_PKT; 914 hci_skb_expect(skb) = HCI_SCO_HDR_SIZE; 915 } 916 917 len = min_t(uint, hci_skb_expect(skb), count); 918 skb_put_data(skb, buffer, len); 919 920 count -= len; 921 buffer += len; 922 hci_skb_expect(skb) -= len; 923 924 if (skb->len == HCI_SCO_HDR_SIZE) { 925 /* Complete SCO header */ 926 hci_skb_expect(skb) = hci_sco_hdr(skb)->dlen; 927 928 if (skb_tailroom(skb) < hci_skb_expect(skb)) { 929 kfree_skb(skb); 930 skb = NULL; 931 932 err = -EILSEQ; 933 break; 934 } 935 } 936 937 if (!hci_skb_expect(skb)) { 938 /* Complete frame */ 939 hci_recv_frame(data->hdev, skb); 940 skb = NULL; 941 } 942 } 943 944 data->sco_skb = skb; 945 spin_unlock_irqrestore(&data->rxlock, flags); 946 947 return err; 948 } 949 950 static void btusb_intr_complete(struct urb *urb) 951 { 952 struct hci_dev *hdev = urb->context; 953 struct btusb_data *data = hci_get_drvdata(hdev); 954 int err; 955 956 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, 957 urb->actual_length); 958 959 if (!test_bit(HCI_RUNNING, &hdev->flags)) 960 return; 961 962 if (urb->status == 0) { 963 hdev->stat.byte_rx += urb->actual_length; 964 965 if (btusb_recv_intr(data, urb->transfer_buffer, 966 urb->actual_length) < 0) { 967 bt_dev_err(hdev, "corrupted event packet"); 968 hdev->stat.err_rx++; 969 } 970 } else if (urb->status == -ENOENT) { 971 /* Avoid suspend failed when usb_kill_urb */ 972 return; 973 } 974 975 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags)) 976 return; 977 978 usb_mark_last_busy(data->udev); 979 usb_anchor_urb(urb, &data->intr_anchor); 980 981 err = usb_submit_urb(urb, GFP_ATOMIC); 982 if (err < 0) { 983 /* -EPERM: urb is being killed; 984 * -ENODEV: device got disconnected 985 */ 986 if (err != -EPERM && err != -ENODEV) 987 bt_dev_err(hdev, "urb %p failed to resubmit (%d)", 988 urb, -err); 989 if (err != -EPERM) 990 hci_cmd_sync_cancel(hdev, -err); 991 usb_unanchor_urb(urb); 992 } 993 } 994 995 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags) 996 { 997 struct btusb_data *data = hci_get_drvdata(hdev); 998 struct urb *urb; 999 unsigned char *buf; 1000 unsigned int pipe; 1001 int err, size; 1002 1003 BT_DBG("%s", hdev->name); 1004 1005 if (!data->intr_ep) 1006 return -ENODEV; 1007 1008 urb = usb_alloc_urb(0, mem_flags); 1009 if (!urb) 1010 return -ENOMEM; 1011 1012 size = le16_to_cpu(data->intr_ep->wMaxPacketSize); 1013 1014 buf = kmalloc(size, mem_flags); 1015 if (!buf) { 1016 usb_free_urb(urb); 1017 return -ENOMEM; 1018 } 1019 1020 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress); 1021 1022 usb_fill_int_urb(urb, data->udev, pipe, buf, size, 1023 btusb_intr_complete, hdev, data->intr_ep->bInterval); 1024 1025 urb->transfer_flags |= URB_FREE_BUFFER; 1026 1027 usb_anchor_urb(urb, &data->intr_anchor); 1028 1029 err = usb_submit_urb(urb, mem_flags); 1030 if (err < 0) { 1031 if (err != -EPERM && err != -ENODEV) 1032 bt_dev_err(hdev, "urb %p submission failed (%d)", 1033 urb, -err); 1034 if (err != -EPERM) 1035 hci_cmd_sync_cancel(hdev, -err); 1036 usb_unanchor_urb(urb); 1037 } 1038 1039 /* Only initialize intr_interval if URB poll sync is enabled */ 1040 if (!data->poll_sync) 1041 goto done; 1042 1043 /* The units are frames (milliseconds) for full and low speed devices, 1044 * and microframes (1/8 millisecond) for highspeed and SuperSpeed 1045 * devices. 1046 * 1047 * This is done once on open/resume so it shouldn't change even if 1048 * force_poll_sync changes. 1049 */ 1050 switch (urb->dev->speed) { 1051 case USB_SPEED_SUPER_PLUS: 1052 case USB_SPEED_SUPER: /* units are 125us */ 1053 data->intr_interval = usecs_to_jiffies(urb->interval * 125); 1054 break; 1055 default: 1056 data->intr_interval = msecs_to_jiffies(urb->interval); 1057 break; 1058 } 1059 1060 done: 1061 usb_free_urb(urb); 1062 1063 return err; 1064 } 1065 1066 static void btusb_bulk_complete(struct urb *urb) 1067 { 1068 struct hci_dev *hdev = urb->context; 1069 struct btusb_data *data = hci_get_drvdata(hdev); 1070 int err; 1071 1072 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, 1073 urb->actual_length); 1074 1075 if (!test_bit(HCI_RUNNING, &hdev->flags)) 1076 return; 1077 1078 if (urb->status == 0) { 1079 hdev->stat.byte_rx += urb->actual_length; 1080 1081 if (data->recv_bulk(data, urb->transfer_buffer, 1082 urb->actual_length) < 0) { 1083 bt_dev_err(hdev, "corrupted ACL packet"); 1084 hdev->stat.err_rx++; 1085 } 1086 } else if (urb->status == -ENOENT) { 1087 /* Avoid suspend failed when usb_kill_urb */ 1088 return; 1089 } 1090 1091 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags)) 1092 return; 1093 1094 usb_anchor_urb(urb, &data->bulk_anchor); 1095 usb_mark_last_busy(data->udev); 1096 1097 err = usb_submit_urb(urb, GFP_ATOMIC); 1098 if (err < 0) { 1099 /* -EPERM: urb is being killed; 1100 * -ENODEV: device got disconnected 1101 */ 1102 if (err != -EPERM && err != -ENODEV) 1103 bt_dev_err(hdev, "urb %p failed to resubmit (%d)", 1104 urb, -err); 1105 usb_unanchor_urb(urb); 1106 } 1107 } 1108 1109 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags) 1110 { 1111 struct btusb_data *data = hci_get_drvdata(hdev); 1112 struct urb *urb; 1113 unsigned char *buf; 1114 unsigned int pipe; 1115 int err, size = HCI_MAX_FRAME_SIZE; 1116 1117 BT_DBG("%s", hdev->name); 1118 1119 if (!data->bulk_rx_ep) 1120 return -ENODEV; 1121 1122 urb = usb_alloc_urb(0, mem_flags); 1123 if (!urb) 1124 return -ENOMEM; 1125 1126 buf = kmalloc(size, mem_flags); 1127 if (!buf) { 1128 usb_free_urb(urb); 1129 return -ENOMEM; 1130 } 1131 1132 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress); 1133 1134 usb_fill_bulk_urb(urb, data->udev, pipe, buf, size, 1135 btusb_bulk_complete, hdev); 1136 1137 urb->transfer_flags |= URB_FREE_BUFFER; 1138 1139 usb_mark_last_busy(data->udev); 1140 usb_anchor_urb(urb, &data->bulk_anchor); 1141 1142 err = usb_submit_urb(urb, mem_flags); 1143 if (err < 0) { 1144 if (err != -EPERM && err != -ENODEV) 1145 bt_dev_err(hdev, "urb %p submission failed (%d)", 1146 urb, -err); 1147 usb_unanchor_urb(urb); 1148 } 1149 1150 usb_free_urb(urb); 1151 1152 return err; 1153 } 1154 1155 static void btusb_isoc_complete(struct urb *urb) 1156 { 1157 struct hci_dev *hdev = urb->context; 1158 struct btusb_data *data = hci_get_drvdata(hdev); 1159 int i, err; 1160 1161 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, 1162 urb->actual_length); 1163 1164 if (!test_bit(HCI_RUNNING, &hdev->flags)) 1165 return; 1166 1167 if (urb->status == 0) { 1168 for (i = 0; i < urb->number_of_packets; i++) { 1169 unsigned int offset = urb->iso_frame_desc[i].offset; 1170 unsigned int length = urb->iso_frame_desc[i].actual_length; 1171 1172 if (urb->iso_frame_desc[i].status) 1173 continue; 1174 1175 hdev->stat.byte_rx += length; 1176 1177 if (btusb_recv_isoc(data, urb->transfer_buffer + offset, 1178 length) < 0) { 1179 bt_dev_err(hdev, "corrupted SCO packet"); 1180 hdev->stat.err_rx++; 1181 } 1182 } 1183 } else if (urb->status == -ENOENT) { 1184 /* Avoid suspend failed when usb_kill_urb */ 1185 return; 1186 } 1187 1188 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags)) 1189 return; 1190 1191 usb_anchor_urb(urb, &data->isoc_anchor); 1192 1193 err = usb_submit_urb(urb, GFP_ATOMIC); 1194 if (err < 0) { 1195 /* -EPERM: urb is being killed; 1196 * -ENODEV: device got disconnected 1197 */ 1198 if (err != -EPERM && err != -ENODEV) 1199 bt_dev_err(hdev, "urb %p failed to resubmit (%d)", 1200 urb, -err); 1201 usb_unanchor_urb(urb); 1202 } 1203 } 1204 1205 static inline void __fill_isoc_descriptor_msbc(struct urb *urb, int len, 1206 int mtu, struct btusb_data *data) 1207 { 1208 int i, offset = 0; 1209 unsigned int interval; 1210 1211 BT_DBG("len %d mtu %d", len, mtu); 1212 1213 /* For mSBC ALT 6 setting the host will send the packet at continuous 1214 * flow. As per core spec 5, vol 4, part B, table 2.1. For ALT setting 1215 * 6 the HCI PACKET INTERVAL should be 7.5ms for every usb packets. 1216 * To maintain the rate we send 63bytes of usb packets alternatively for 1217 * 7ms and 8ms to maintain the rate as 7.5ms. 1218 */ 1219 if (data->usb_alt6_packet_flow) { 1220 interval = 7; 1221 data->usb_alt6_packet_flow = false; 1222 } else { 1223 interval = 6; 1224 data->usb_alt6_packet_flow = true; 1225 } 1226 1227 for (i = 0; i < interval; i++) { 1228 urb->iso_frame_desc[i].offset = offset; 1229 urb->iso_frame_desc[i].length = offset; 1230 } 1231 1232 if (len && i < BTUSB_MAX_ISOC_FRAMES) { 1233 urb->iso_frame_desc[i].offset = offset; 1234 urb->iso_frame_desc[i].length = len; 1235 i++; 1236 } 1237 1238 urb->number_of_packets = i; 1239 } 1240 1241 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu) 1242 { 1243 int i, offset = 0; 1244 1245 BT_DBG("len %d mtu %d", len, mtu); 1246 1247 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu; 1248 i++, offset += mtu, len -= mtu) { 1249 urb->iso_frame_desc[i].offset = offset; 1250 urb->iso_frame_desc[i].length = mtu; 1251 } 1252 1253 if (len && i < BTUSB_MAX_ISOC_FRAMES) { 1254 urb->iso_frame_desc[i].offset = offset; 1255 urb->iso_frame_desc[i].length = len; 1256 i++; 1257 } 1258 1259 urb->number_of_packets = i; 1260 } 1261 1262 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags) 1263 { 1264 struct btusb_data *data = hci_get_drvdata(hdev); 1265 struct urb *urb; 1266 unsigned char *buf; 1267 unsigned int pipe; 1268 int err, size; 1269 1270 BT_DBG("%s", hdev->name); 1271 1272 if (!data->isoc_rx_ep) 1273 return -ENODEV; 1274 1275 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags); 1276 if (!urb) 1277 return -ENOMEM; 1278 1279 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) * 1280 BTUSB_MAX_ISOC_FRAMES; 1281 1282 buf = kmalloc(size, mem_flags); 1283 if (!buf) { 1284 usb_free_urb(urb); 1285 return -ENOMEM; 1286 } 1287 1288 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress); 1289 1290 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete, 1291 hdev, data->isoc_rx_ep->bInterval); 1292 1293 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP; 1294 1295 __fill_isoc_descriptor(urb, size, 1296 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize)); 1297 1298 usb_anchor_urb(urb, &data->isoc_anchor); 1299 1300 err = usb_submit_urb(urb, mem_flags); 1301 if (err < 0) { 1302 if (err != -EPERM && err != -ENODEV) 1303 bt_dev_err(hdev, "urb %p submission failed (%d)", 1304 urb, -err); 1305 usb_unanchor_urb(urb); 1306 } 1307 1308 usb_free_urb(urb); 1309 1310 return err; 1311 } 1312 1313 static void btusb_diag_complete(struct urb *urb) 1314 { 1315 struct hci_dev *hdev = urb->context; 1316 struct btusb_data *data = hci_get_drvdata(hdev); 1317 int err; 1318 1319 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, 1320 urb->actual_length); 1321 1322 if (urb->status == 0) { 1323 struct sk_buff *skb; 1324 1325 skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC); 1326 if (skb) { 1327 skb_put_data(skb, urb->transfer_buffer, 1328 urb->actual_length); 1329 hci_recv_diag(hdev, skb); 1330 } 1331 } else if (urb->status == -ENOENT) { 1332 /* Avoid suspend failed when usb_kill_urb */ 1333 return; 1334 } 1335 1336 if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags)) 1337 return; 1338 1339 usb_anchor_urb(urb, &data->diag_anchor); 1340 usb_mark_last_busy(data->udev); 1341 1342 err = usb_submit_urb(urb, GFP_ATOMIC); 1343 if (err < 0) { 1344 /* -EPERM: urb is being killed; 1345 * -ENODEV: device got disconnected 1346 */ 1347 if (err != -EPERM && err != -ENODEV) 1348 bt_dev_err(hdev, "urb %p failed to resubmit (%d)", 1349 urb, -err); 1350 usb_unanchor_urb(urb); 1351 } 1352 } 1353 1354 static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags) 1355 { 1356 struct btusb_data *data = hci_get_drvdata(hdev); 1357 struct urb *urb; 1358 unsigned char *buf; 1359 unsigned int pipe; 1360 int err, size = HCI_MAX_FRAME_SIZE; 1361 1362 BT_DBG("%s", hdev->name); 1363 1364 if (!data->diag_rx_ep) 1365 return -ENODEV; 1366 1367 urb = usb_alloc_urb(0, mem_flags); 1368 if (!urb) 1369 return -ENOMEM; 1370 1371 buf = kmalloc(size, mem_flags); 1372 if (!buf) { 1373 usb_free_urb(urb); 1374 return -ENOMEM; 1375 } 1376 1377 pipe = usb_rcvbulkpipe(data->udev, data->diag_rx_ep->bEndpointAddress); 1378 1379 usb_fill_bulk_urb(urb, data->udev, pipe, buf, size, 1380 btusb_diag_complete, hdev); 1381 1382 urb->transfer_flags |= URB_FREE_BUFFER; 1383 1384 usb_mark_last_busy(data->udev); 1385 usb_anchor_urb(urb, &data->diag_anchor); 1386 1387 err = usb_submit_urb(urb, mem_flags); 1388 if (err < 0) { 1389 if (err != -EPERM && err != -ENODEV) 1390 bt_dev_err(hdev, "urb %p submission failed (%d)", 1391 urb, -err); 1392 usb_unanchor_urb(urb); 1393 } 1394 1395 usb_free_urb(urb); 1396 1397 return err; 1398 } 1399 1400 static void btusb_tx_complete(struct urb *urb) 1401 { 1402 struct sk_buff *skb = urb->context; 1403 struct hci_dev *hdev = (struct hci_dev *)skb->dev; 1404 struct btusb_data *data = hci_get_drvdata(hdev); 1405 unsigned long flags; 1406 1407 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, 1408 urb->actual_length); 1409 1410 if (!test_bit(HCI_RUNNING, &hdev->flags)) 1411 goto done; 1412 1413 if (!urb->status) { 1414 hdev->stat.byte_tx += urb->transfer_buffer_length; 1415 } else { 1416 if (hci_skb_pkt_type(skb) == HCI_COMMAND_PKT) 1417 hci_cmd_sync_cancel(hdev, -urb->status); 1418 hdev->stat.err_tx++; 1419 } 1420 1421 done: 1422 spin_lock_irqsave(&data->txlock, flags); 1423 data->tx_in_flight--; 1424 spin_unlock_irqrestore(&data->txlock, flags); 1425 1426 kfree(urb->setup_packet); 1427 1428 kfree_skb(skb); 1429 } 1430 1431 static void btusb_isoc_tx_complete(struct urb *urb) 1432 { 1433 struct sk_buff *skb = urb->context; 1434 struct hci_dev *hdev = (struct hci_dev *)skb->dev; 1435 1436 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, 1437 urb->actual_length); 1438 1439 if (!test_bit(HCI_RUNNING, &hdev->flags)) 1440 goto done; 1441 1442 if (!urb->status) 1443 hdev->stat.byte_tx += urb->transfer_buffer_length; 1444 else 1445 hdev->stat.err_tx++; 1446 1447 done: 1448 kfree(urb->setup_packet); 1449 1450 kfree_skb(skb); 1451 } 1452 1453 static int btusb_open(struct hci_dev *hdev) 1454 { 1455 struct btusb_data *data = hci_get_drvdata(hdev); 1456 int err; 1457 1458 BT_DBG("%s", hdev->name); 1459 1460 err = usb_autopm_get_interface(data->intf); 1461 if (err < 0) 1462 return err; 1463 1464 /* Patching USB firmware files prior to starting any URBs of HCI path 1465 * It is more safe to use USB bulk channel for downloading USB patch 1466 */ 1467 if (data->setup_on_usb) { 1468 err = data->setup_on_usb(hdev); 1469 if (err < 0) 1470 goto setup_fail; 1471 } 1472 1473 data->intf->needs_remote_wakeup = 1; 1474 1475 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags)) 1476 goto done; 1477 1478 err = btusb_submit_intr_urb(hdev, GFP_KERNEL); 1479 if (err < 0) 1480 goto failed; 1481 1482 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL); 1483 if (err < 0) { 1484 usb_kill_anchored_urbs(&data->intr_anchor); 1485 goto failed; 1486 } 1487 1488 set_bit(BTUSB_BULK_RUNNING, &data->flags); 1489 btusb_submit_bulk_urb(hdev, GFP_KERNEL); 1490 1491 if (data->diag) { 1492 if (!btusb_submit_diag_urb(hdev, GFP_KERNEL)) 1493 set_bit(BTUSB_DIAG_RUNNING, &data->flags); 1494 } 1495 1496 done: 1497 usb_autopm_put_interface(data->intf); 1498 return 0; 1499 1500 failed: 1501 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 1502 setup_fail: 1503 usb_autopm_put_interface(data->intf); 1504 return err; 1505 } 1506 1507 static void btusb_stop_traffic(struct btusb_data *data) 1508 { 1509 usb_kill_anchored_urbs(&data->intr_anchor); 1510 usb_kill_anchored_urbs(&data->bulk_anchor); 1511 usb_kill_anchored_urbs(&data->isoc_anchor); 1512 usb_kill_anchored_urbs(&data->diag_anchor); 1513 usb_kill_anchored_urbs(&data->ctrl_anchor); 1514 } 1515 1516 static int btusb_close(struct hci_dev *hdev) 1517 { 1518 struct btusb_data *data = hci_get_drvdata(hdev); 1519 int err; 1520 1521 BT_DBG("%s", hdev->name); 1522 1523 cancel_delayed_work(&data->rx_work); 1524 cancel_work_sync(&data->work); 1525 cancel_work_sync(&data->waker); 1526 1527 skb_queue_purge(&data->acl_q); 1528 1529 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1530 clear_bit(BTUSB_BULK_RUNNING, &data->flags); 1531 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 1532 clear_bit(BTUSB_DIAG_RUNNING, &data->flags); 1533 1534 btusb_stop_traffic(data); 1535 btusb_free_frags(data); 1536 1537 err = usb_autopm_get_interface(data->intf); 1538 if (err < 0) 1539 goto failed; 1540 1541 data->intf->needs_remote_wakeup = 0; 1542 1543 /* Enable remote wake up for auto-suspend */ 1544 if (test_bit(BTUSB_WAKEUP_AUTOSUSPEND, &data->flags)) 1545 data->intf->needs_remote_wakeup = 1; 1546 1547 usb_autopm_put_interface(data->intf); 1548 1549 failed: 1550 usb_scuttle_anchored_urbs(&data->deferred); 1551 return 0; 1552 } 1553 1554 static int btusb_flush(struct hci_dev *hdev) 1555 { 1556 struct btusb_data *data = hci_get_drvdata(hdev); 1557 1558 BT_DBG("%s", hdev->name); 1559 1560 cancel_delayed_work(&data->rx_work); 1561 1562 skb_queue_purge(&data->acl_q); 1563 1564 usb_kill_anchored_urbs(&data->tx_anchor); 1565 btusb_free_frags(data); 1566 1567 return 0; 1568 } 1569 1570 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb) 1571 { 1572 struct btusb_data *data = hci_get_drvdata(hdev); 1573 struct usb_ctrlrequest *dr; 1574 struct urb *urb; 1575 unsigned int pipe; 1576 1577 urb = usb_alloc_urb(0, GFP_KERNEL); 1578 if (!urb) 1579 return ERR_PTR(-ENOMEM); 1580 1581 dr = kmalloc(sizeof(*dr), GFP_KERNEL); 1582 if (!dr) { 1583 usb_free_urb(urb); 1584 return ERR_PTR(-ENOMEM); 1585 } 1586 1587 dr->bRequestType = data->cmdreq_type; 1588 dr->bRequest = data->cmdreq; 1589 dr->wIndex = 0; 1590 dr->wValue = 0; 1591 dr->wLength = __cpu_to_le16(skb->len); 1592 1593 pipe = usb_sndctrlpipe(data->udev, 0x00); 1594 1595 usb_fill_control_urb(urb, data->udev, pipe, (void *)dr, 1596 skb->data, skb->len, btusb_tx_complete, skb); 1597 1598 skb->dev = (void *)hdev; 1599 1600 return urb; 1601 } 1602 1603 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb) 1604 { 1605 struct btusb_data *data = hci_get_drvdata(hdev); 1606 struct urb *urb; 1607 unsigned int pipe; 1608 1609 if (!data->bulk_tx_ep) 1610 return ERR_PTR(-ENODEV); 1611 1612 urb = usb_alloc_urb(0, GFP_KERNEL); 1613 if (!urb) 1614 return ERR_PTR(-ENOMEM); 1615 1616 pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress); 1617 1618 usb_fill_bulk_urb(urb, data->udev, pipe, 1619 skb->data, skb->len, btusb_tx_complete, skb); 1620 1621 skb->dev = (void *)hdev; 1622 1623 return urb; 1624 } 1625 1626 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb) 1627 { 1628 struct btusb_data *data = hci_get_drvdata(hdev); 1629 struct urb *urb; 1630 unsigned int pipe; 1631 1632 if (!data->isoc_tx_ep) 1633 return ERR_PTR(-ENODEV); 1634 1635 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL); 1636 if (!urb) 1637 return ERR_PTR(-ENOMEM); 1638 1639 pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress); 1640 1641 usb_fill_int_urb(urb, data->udev, pipe, 1642 skb->data, skb->len, btusb_isoc_tx_complete, 1643 skb, data->isoc_tx_ep->bInterval); 1644 1645 urb->transfer_flags = URB_ISO_ASAP; 1646 1647 if (data->isoc_altsetting == 6) 1648 __fill_isoc_descriptor_msbc(urb, skb->len, 1649 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize), 1650 data); 1651 else 1652 __fill_isoc_descriptor(urb, skb->len, 1653 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize)); 1654 skb->dev = (void *)hdev; 1655 1656 return urb; 1657 } 1658 1659 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb) 1660 { 1661 struct btusb_data *data = hci_get_drvdata(hdev); 1662 int err; 1663 1664 usb_anchor_urb(urb, &data->tx_anchor); 1665 1666 err = usb_submit_urb(urb, GFP_KERNEL); 1667 if (err < 0) { 1668 if (err != -EPERM && err != -ENODEV) 1669 bt_dev_err(hdev, "urb %p submission failed (%d)", 1670 urb, -err); 1671 kfree(urb->setup_packet); 1672 usb_unanchor_urb(urb); 1673 } else { 1674 usb_mark_last_busy(data->udev); 1675 } 1676 1677 usb_free_urb(urb); 1678 return err; 1679 } 1680 1681 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb) 1682 { 1683 struct btusb_data *data = hci_get_drvdata(hdev); 1684 unsigned long flags; 1685 bool suspending; 1686 1687 spin_lock_irqsave(&data->txlock, flags); 1688 suspending = test_bit(BTUSB_SUSPENDING, &data->flags); 1689 if (!suspending) 1690 data->tx_in_flight++; 1691 spin_unlock_irqrestore(&data->txlock, flags); 1692 1693 if (!suspending) 1694 return submit_tx_urb(hdev, urb); 1695 1696 usb_anchor_urb(urb, &data->deferred); 1697 schedule_work(&data->waker); 1698 1699 usb_free_urb(urb); 1700 return 0; 1701 } 1702 1703 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb) 1704 { 1705 struct urb *urb; 1706 1707 BT_DBG("%s", hdev->name); 1708 1709 switch (hci_skb_pkt_type(skb)) { 1710 case HCI_COMMAND_PKT: 1711 urb = alloc_ctrl_urb(hdev, skb); 1712 if (IS_ERR(urb)) 1713 return PTR_ERR(urb); 1714 1715 hdev->stat.cmd_tx++; 1716 return submit_or_queue_tx_urb(hdev, urb); 1717 1718 case HCI_ACLDATA_PKT: 1719 urb = alloc_bulk_urb(hdev, skb); 1720 if (IS_ERR(urb)) 1721 return PTR_ERR(urb); 1722 1723 hdev->stat.acl_tx++; 1724 return submit_or_queue_tx_urb(hdev, urb); 1725 1726 case HCI_SCODATA_PKT: 1727 if (hci_conn_num(hdev, SCO_LINK) < 1) 1728 return -ENODEV; 1729 1730 urb = alloc_isoc_urb(hdev, skb); 1731 if (IS_ERR(urb)) 1732 return PTR_ERR(urb); 1733 1734 hdev->stat.sco_tx++; 1735 return submit_tx_urb(hdev, urb); 1736 } 1737 1738 return -EILSEQ; 1739 } 1740 1741 static void btusb_notify(struct hci_dev *hdev, unsigned int evt) 1742 { 1743 struct btusb_data *data = hci_get_drvdata(hdev); 1744 1745 BT_DBG("%s evt %d", hdev->name, evt); 1746 1747 if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) { 1748 data->sco_num = hci_conn_num(hdev, SCO_LINK); 1749 data->air_mode = evt; 1750 schedule_work(&data->work); 1751 } 1752 } 1753 1754 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting) 1755 { 1756 struct btusb_data *data = hci_get_drvdata(hdev); 1757 struct usb_interface *intf = data->isoc; 1758 struct usb_endpoint_descriptor *ep_desc; 1759 int i, err; 1760 1761 if (!data->isoc) 1762 return -ENODEV; 1763 1764 err = usb_set_interface(data->udev, data->isoc_ifnum, altsetting); 1765 if (err < 0) { 1766 bt_dev_err(hdev, "setting interface failed (%d)", -err); 1767 return err; 1768 } 1769 1770 data->isoc_altsetting = altsetting; 1771 1772 data->isoc_tx_ep = NULL; 1773 data->isoc_rx_ep = NULL; 1774 1775 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { 1776 ep_desc = &intf->cur_altsetting->endpoint[i].desc; 1777 1778 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) { 1779 data->isoc_tx_ep = ep_desc; 1780 continue; 1781 } 1782 1783 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) { 1784 data->isoc_rx_ep = ep_desc; 1785 continue; 1786 } 1787 } 1788 1789 if (!data->isoc_tx_ep || !data->isoc_rx_ep) { 1790 bt_dev_err(hdev, "invalid SCO descriptors"); 1791 return -ENODEV; 1792 } 1793 1794 return 0; 1795 } 1796 1797 static int btusb_switch_alt_setting(struct hci_dev *hdev, int new_alts) 1798 { 1799 struct btusb_data *data = hci_get_drvdata(hdev); 1800 int err; 1801 1802 if (data->isoc_altsetting != new_alts) { 1803 unsigned long flags; 1804 1805 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1806 usb_kill_anchored_urbs(&data->isoc_anchor); 1807 1808 /* When isochronous alternate setting needs to be 1809 * changed, because SCO connection has been added 1810 * or removed, a packet fragment may be left in the 1811 * reassembling state. This could lead to wrongly 1812 * assembled fragments. 1813 * 1814 * Clear outstanding fragment when selecting a new 1815 * alternate setting. 1816 */ 1817 spin_lock_irqsave(&data->rxlock, flags); 1818 kfree_skb(data->sco_skb); 1819 data->sco_skb = NULL; 1820 spin_unlock_irqrestore(&data->rxlock, flags); 1821 1822 err = __set_isoc_interface(hdev, new_alts); 1823 if (err < 0) 1824 return err; 1825 } 1826 1827 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) { 1828 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0) 1829 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1830 else 1831 btusb_submit_isoc_urb(hdev, GFP_KERNEL); 1832 } 1833 1834 return 0; 1835 } 1836 1837 static struct usb_host_interface *btusb_find_altsetting(struct btusb_data *data, 1838 int alt) 1839 { 1840 struct usb_interface *intf = data->isoc; 1841 int i; 1842 1843 BT_DBG("Looking for Alt no :%d", alt); 1844 1845 if (!intf) 1846 return NULL; 1847 1848 for (i = 0; i < intf->num_altsetting; i++) { 1849 if (intf->altsetting[i].desc.bAlternateSetting == alt) 1850 return &intf->altsetting[i]; 1851 } 1852 1853 return NULL; 1854 } 1855 1856 static void btusb_work(struct work_struct *work) 1857 { 1858 struct btusb_data *data = container_of(work, struct btusb_data, work); 1859 struct hci_dev *hdev = data->hdev; 1860 int new_alts = 0; 1861 int err; 1862 1863 if (data->sco_num > 0) { 1864 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) { 1865 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf); 1866 if (err < 0) { 1867 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1868 usb_kill_anchored_urbs(&data->isoc_anchor); 1869 return; 1870 } 1871 1872 set_bit(BTUSB_DID_ISO_RESUME, &data->flags); 1873 } 1874 1875 if (data->air_mode == HCI_NOTIFY_ENABLE_SCO_CVSD) { 1876 if (hdev->voice_setting & 0x0020) { 1877 static const int alts[3] = { 2, 4, 5 }; 1878 1879 new_alts = alts[data->sco_num - 1]; 1880 } else { 1881 new_alts = data->sco_num; 1882 } 1883 } else if (data->air_mode == HCI_NOTIFY_ENABLE_SCO_TRANSP) { 1884 /* Bluetooth USB spec recommends alt 6 (63 bytes), but 1885 * many adapters do not support it. Alt 1 appears to 1886 * work for all adapters that do not have alt 6, and 1887 * which work with WBS at all. Some devices prefer 1888 * alt 3 (HCI payload >= 60 Bytes let air packet 1889 * data satisfy 60 bytes), requiring 1890 * MTU >= 3 (packets) * 25 (size) - 3 (headers) = 72 1891 * see also Core spec 5, vol 4, B 2.1.1 & Table 2.1. 1892 */ 1893 if (btusb_find_altsetting(data, 6)) 1894 new_alts = 6; 1895 else if (btusb_find_altsetting(data, 3) && 1896 hdev->sco_mtu >= 72 && 1897 test_bit(BTUSB_USE_ALT3_FOR_WBS, &data->flags)) 1898 new_alts = 3; 1899 else 1900 new_alts = 1; 1901 } 1902 1903 if (btusb_switch_alt_setting(hdev, new_alts) < 0) 1904 bt_dev_err(hdev, "set USB alt:(%d) failed!", new_alts); 1905 } else { 1906 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1907 usb_kill_anchored_urbs(&data->isoc_anchor); 1908 1909 __set_isoc_interface(hdev, 0); 1910 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags)) 1911 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf); 1912 } 1913 } 1914 1915 static void btusb_waker(struct work_struct *work) 1916 { 1917 struct btusb_data *data = container_of(work, struct btusb_data, waker); 1918 int err; 1919 1920 err = usb_autopm_get_interface(data->intf); 1921 if (err < 0) 1922 return; 1923 1924 usb_autopm_put_interface(data->intf); 1925 } 1926 1927 static void btusb_rx_work(struct work_struct *work) 1928 { 1929 struct btusb_data *data = container_of(work, struct btusb_data, 1930 rx_work.work); 1931 struct sk_buff *skb; 1932 1933 /* Dequeue ACL data received during the interval */ 1934 while ((skb = skb_dequeue(&data->acl_q))) 1935 data->recv_acl(data->hdev, skb); 1936 } 1937 1938 static int btusb_setup_bcm92035(struct hci_dev *hdev) 1939 { 1940 struct sk_buff *skb; 1941 u8 val = 0x00; 1942 1943 BT_DBG("%s", hdev->name); 1944 1945 skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT); 1946 if (IS_ERR(skb)) 1947 bt_dev_err(hdev, "BCM92035 command failed (%ld)", PTR_ERR(skb)); 1948 else 1949 kfree_skb(skb); 1950 1951 return 0; 1952 } 1953 1954 static int btusb_setup_csr(struct hci_dev *hdev) 1955 { 1956 struct btusb_data *data = hci_get_drvdata(hdev); 1957 u16 bcdDevice = le16_to_cpu(data->udev->descriptor.bcdDevice); 1958 struct hci_rp_read_local_version *rp; 1959 struct sk_buff *skb; 1960 bool is_fake = false; 1961 int ret; 1962 1963 BT_DBG("%s", hdev->name); 1964 1965 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL, 1966 HCI_INIT_TIMEOUT); 1967 if (IS_ERR(skb)) { 1968 int err = PTR_ERR(skb); 1969 bt_dev_err(hdev, "CSR: Local version failed (%d)", err); 1970 return err; 1971 } 1972 1973 if (skb->len != sizeof(struct hci_rp_read_local_version)) { 1974 bt_dev_err(hdev, "CSR: Local version length mismatch"); 1975 kfree_skb(skb); 1976 return -EIO; 1977 } 1978 1979 rp = (struct hci_rp_read_local_version *)skb->data; 1980 1981 /* Detect a wide host of Chinese controllers that aren't CSR. 1982 * 1983 * Known fake bcdDevices: 0x0100, 0x0134, 0x1915, 0x2520, 0x7558, 0x8891 1984 * 1985 * The main thing they have in common is that these are really popular low-cost 1986 * options that support newer Bluetooth versions but rely on heavy VID/PID 1987 * squatting of this poor old Bluetooth 1.1 device. Even sold as such. 1988 * 1989 * We detect actual CSR devices by checking that the HCI manufacturer code 1990 * is Cambridge Silicon Radio (10) and ensuring that LMP sub-version and 1991 * HCI rev values always match. As they both store the firmware number. 1992 */ 1993 if (le16_to_cpu(rp->manufacturer) != 10 || 1994 le16_to_cpu(rp->hci_rev) != le16_to_cpu(rp->lmp_subver)) 1995 is_fake = true; 1996 1997 /* Known legit CSR firmware build numbers and their supported BT versions: 1998 * - 1.1 (0x1) -> 0x0073, 0x020d, 0x033c, 0x034e 1999 * - 1.2 (0x2) -> 0x04d9, 0x0529 2000 * - 2.0 (0x3) -> 0x07a6, 0x07ad, 0x0c5c 2001 * - 2.1 (0x4) -> 0x149c, 0x1735, 0x1899 (0x1899 is a BlueCore4-External) 2002 * - 4.0 (0x6) -> 0x1d86, 0x2031, 0x22bb 2003 * 2004 * e.g. Real CSR dongles with LMP subversion 0x73 are old enough that 2005 * support BT 1.1 only; so it's a dead giveaway when some 2006 * third-party BT 4.0 dongle reuses it. 2007 */ 2008 else if (le16_to_cpu(rp->lmp_subver) <= 0x034e && 2009 le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_1_1) 2010 is_fake = true; 2011 2012 else if (le16_to_cpu(rp->lmp_subver) <= 0x0529 && 2013 le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_1_2) 2014 is_fake = true; 2015 2016 else if (le16_to_cpu(rp->lmp_subver) <= 0x0c5c && 2017 le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_2_0) 2018 is_fake = true; 2019 2020 else if (le16_to_cpu(rp->lmp_subver) <= 0x1899 && 2021 le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_2_1) 2022 is_fake = true; 2023 2024 else if (le16_to_cpu(rp->lmp_subver) <= 0x22bb && 2025 le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_4_0) 2026 is_fake = true; 2027 2028 /* Other clones which beat all the above checks */ 2029 else if (bcdDevice == 0x0134 && 2030 le16_to_cpu(rp->lmp_subver) == 0x0c5c && 2031 le16_to_cpu(rp->hci_ver) == BLUETOOTH_VER_2_0) 2032 is_fake = true; 2033 2034 if (is_fake) { 2035 bt_dev_warn(hdev, "CSR: Unbranded CSR clone detected; adding workarounds and force-suspending once..."); 2036 2037 /* Generally these clones have big discrepancies between 2038 * advertised features and what's actually supported. 2039 * Probably will need to be expanded in the future; 2040 * without these the controller will lock up. 2041 */ 2042 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks); 2043 set_bit(HCI_QUIRK_BROKEN_ERR_DATA_REPORTING, &hdev->quirks); 2044 2045 /* Clear the reset quirk since this is not an actual 2046 * early Bluetooth 1.1 device from CSR. 2047 */ 2048 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); 2049 clear_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); 2050 2051 /* 2052 * Special workaround for these BT 4.0 chip clones, and potentially more: 2053 * 2054 * - 0x0134: a Barrot 8041a02 (HCI rev: 0x1012 sub: 0x0810) 2055 * - 0x7558: IC markings FR3191AHAL 749H15143 (HCI rev/sub-version: 0x0709) 2056 * 2057 * These controllers are really messed-up. 2058 * 2059 * 1. Their bulk RX endpoint will never report any data unless 2060 * the device was suspended at least once (yes, really). 2061 * 2. They will not wakeup when autosuspended and receiving data 2062 * on their bulk RX endpoint from e.g. a keyboard or mouse 2063 * (IOW remote-wakeup support is broken for the bulk endpoint). 2064 * 2065 * To fix 1. enable runtime-suspend, force-suspend the 2066 * HCI and then wake-it up by disabling runtime-suspend. 2067 * 2068 * To fix 2. clear the HCI's can_wake flag, this way the HCI 2069 * will still be autosuspended when it is not open. 2070 * 2071 * -- 2072 * 2073 * Because these are widespread problems we prefer generic solutions; so 2074 * apply this initialization quirk to every controller that gets here, 2075 * it should be harmless. The alternative is to not work at all. 2076 */ 2077 pm_runtime_allow(&data->udev->dev); 2078 2079 ret = pm_runtime_suspend(&data->udev->dev); 2080 if (ret >= 0) 2081 msleep(200); 2082 else 2083 bt_dev_err(hdev, "CSR: Failed to suspend the device for our Barrot 8041a02 receive-issue workaround"); 2084 2085 pm_runtime_forbid(&data->udev->dev); 2086 2087 device_set_wakeup_capable(&data->udev->dev, false); 2088 2089 /* Re-enable autosuspend if this was requested */ 2090 if (enable_autosuspend) 2091 usb_enable_autosuspend(data->udev); 2092 } 2093 2094 kfree_skb(skb); 2095 2096 return 0; 2097 } 2098 2099 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode) 2100 { 2101 struct sk_buff *skb; 2102 struct hci_event_hdr *hdr; 2103 struct hci_ev_cmd_complete *evt; 2104 2105 skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_KERNEL); 2106 if (!skb) 2107 return -ENOMEM; 2108 2109 hdr = skb_put(skb, sizeof(*hdr)); 2110 hdr->evt = HCI_EV_CMD_COMPLETE; 2111 hdr->plen = sizeof(*evt) + 1; 2112 2113 evt = skb_put(skb, sizeof(*evt)); 2114 evt->ncmd = 0x01; 2115 evt->opcode = cpu_to_le16(opcode); 2116 2117 skb_put_u8(skb, 0x00); 2118 2119 hci_skb_pkt_type(skb) = HCI_EVENT_PKT; 2120 2121 return hci_recv_frame(hdev, skb); 2122 } 2123 2124 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer, 2125 int count) 2126 { 2127 struct hci_dev *hdev = data->hdev; 2128 2129 /* When the device is in bootloader mode, then it can send 2130 * events via the bulk endpoint. These events are treated the 2131 * same way as the ones received from the interrupt endpoint. 2132 */ 2133 if (btintel_test_flag(hdev, INTEL_BOOTLOADER)) 2134 return btusb_recv_intr(data, buffer, count); 2135 2136 return btusb_recv_bulk(data, buffer, count); 2137 } 2138 2139 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb) 2140 { 2141 if (btintel_test_flag(hdev, INTEL_BOOTLOADER)) { 2142 struct hci_event_hdr *hdr = (void *)skb->data; 2143 2144 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff && 2145 hdr->plen > 0) { 2146 const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1; 2147 unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1; 2148 2149 switch (skb->data[2]) { 2150 case 0x02: 2151 /* When switching to the operational firmware 2152 * the device sends a vendor specific event 2153 * indicating that the bootup completed. 2154 */ 2155 btintel_bootup(hdev, ptr, len); 2156 break; 2157 case 0x06: 2158 /* When the firmware loading completes the 2159 * device sends out a vendor specific event 2160 * indicating the result of the firmware 2161 * loading. 2162 */ 2163 btintel_secure_send_result(hdev, ptr, len); 2164 break; 2165 } 2166 } 2167 } 2168 2169 return hci_recv_frame(hdev, skb); 2170 } 2171 2172 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb) 2173 { 2174 struct urb *urb; 2175 2176 BT_DBG("%s", hdev->name); 2177 2178 switch (hci_skb_pkt_type(skb)) { 2179 case HCI_COMMAND_PKT: 2180 if (btintel_test_flag(hdev, INTEL_BOOTLOADER)) { 2181 struct hci_command_hdr *cmd = (void *)skb->data; 2182 __u16 opcode = le16_to_cpu(cmd->opcode); 2183 2184 /* When in bootloader mode and the command 0xfc09 2185 * is received, it needs to be send down the 2186 * bulk endpoint. So allocate a bulk URB instead. 2187 */ 2188 if (opcode == 0xfc09) 2189 urb = alloc_bulk_urb(hdev, skb); 2190 else 2191 urb = alloc_ctrl_urb(hdev, skb); 2192 2193 /* When the 0xfc01 command is issued to boot into 2194 * the operational firmware, it will actually not 2195 * send a command complete event. To keep the flow 2196 * control working inject that event here. 2197 */ 2198 if (opcode == 0xfc01) 2199 inject_cmd_complete(hdev, opcode); 2200 } else { 2201 urb = alloc_ctrl_urb(hdev, skb); 2202 } 2203 if (IS_ERR(urb)) 2204 return PTR_ERR(urb); 2205 2206 hdev->stat.cmd_tx++; 2207 return submit_or_queue_tx_urb(hdev, urb); 2208 2209 case HCI_ACLDATA_PKT: 2210 urb = alloc_bulk_urb(hdev, skb); 2211 if (IS_ERR(urb)) 2212 return PTR_ERR(urb); 2213 2214 hdev->stat.acl_tx++; 2215 return submit_or_queue_tx_urb(hdev, urb); 2216 2217 case HCI_SCODATA_PKT: 2218 if (hci_conn_num(hdev, SCO_LINK) < 1) 2219 return -ENODEV; 2220 2221 urb = alloc_isoc_urb(hdev, skb); 2222 if (IS_ERR(urb)) 2223 return PTR_ERR(urb); 2224 2225 hdev->stat.sco_tx++; 2226 return submit_tx_urb(hdev, urb); 2227 } 2228 2229 return -EILSEQ; 2230 } 2231 2232 /* UHW CR mapping */ 2233 #define MTK_BT_MISC 0x70002510 2234 #define MTK_BT_SUBSYS_RST 0x70002610 2235 #define MTK_UDMA_INT_STA_BT 0x74000024 2236 #define MTK_UDMA_INT_STA_BT1 0x74000308 2237 #define MTK_BT_WDT_STATUS 0x740003A0 2238 #define MTK_EP_RST_OPT 0x74011890 2239 #define MTK_EP_RST_IN_OUT_OPT 0x00010001 2240 #define MTK_BT_RST_DONE 0x00000100 2241 #define MTK_BT_RESET_WAIT_MS 100 2242 #define MTK_BT_RESET_NUM_TRIES 10 2243 2244 static void btusb_mtk_wmt_recv(struct urb *urb) 2245 { 2246 struct hci_dev *hdev = urb->context; 2247 struct btusb_data *data = hci_get_drvdata(hdev); 2248 struct hci_event_hdr *hdr; 2249 struct sk_buff *skb; 2250 int err; 2251 2252 if (urb->status == 0 && urb->actual_length > 0) { 2253 hdev->stat.byte_rx += urb->actual_length; 2254 2255 /* WMT event shouldn't be fragmented and the size should be 2256 * less than HCI_WMT_MAX_EVENT_SIZE. 2257 */ 2258 skb = bt_skb_alloc(HCI_WMT_MAX_EVENT_SIZE, GFP_ATOMIC); 2259 if (!skb) { 2260 hdev->stat.err_rx++; 2261 kfree(urb->setup_packet); 2262 return; 2263 } 2264 2265 hci_skb_pkt_type(skb) = HCI_EVENT_PKT; 2266 skb_put_data(skb, urb->transfer_buffer, urb->actual_length); 2267 2268 hdr = (void *)skb->data; 2269 /* Fix up the vendor event id with 0xff for vendor specific 2270 * instead of 0xe4 so that event send via monitoring socket can 2271 * be parsed properly. 2272 */ 2273 hdr->evt = 0xff; 2274 2275 /* When someone waits for the WMT event, the skb is being cloned 2276 * and being processed the events from there then. 2277 */ 2278 if (test_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags)) { 2279 data->evt_skb = skb_clone(skb, GFP_ATOMIC); 2280 if (!data->evt_skb) { 2281 kfree_skb(skb); 2282 kfree(urb->setup_packet); 2283 return; 2284 } 2285 } 2286 2287 err = hci_recv_frame(hdev, skb); 2288 if (err < 0) { 2289 kfree_skb(data->evt_skb); 2290 data->evt_skb = NULL; 2291 kfree(urb->setup_packet); 2292 return; 2293 } 2294 2295 if (test_and_clear_bit(BTUSB_TX_WAIT_VND_EVT, 2296 &data->flags)) { 2297 /* Barrier to sync with other CPUs */ 2298 smp_mb__after_atomic(); 2299 wake_up_bit(&data->flags, 2300 BTUSB_TX_WAIT_VND_EVT); 2301 } 2302 kfree(urb->setup_packet); 2303 return; 2304 } else if (urb->status == -ENOENT) { 2305 /* Avoid suspend failed when usb_kill_urb */ 2306 return; 2307 } 2308 2309 usb_mark_last_busy(data->udev); 2310 2311 /* The URB complete handler is still called with urb->actual_length = 0 2312 * when the event is not available, so we should keep re-submitting 2313 * URB until WMT event returns, Also, It's necessary to wait some time 2314 * between the two consecutive control URBs to relax the target device 2315 * to generate the event. Otherwise, the WMT event cannot return from 2316 * the device successfully. 2317 */ 2318 udelay(500); 2319 2320 usb_anchor_urb(urb, &data->ctrl_anchor); 2321 err = usb_submit_urb(urb, GFP_ATOMIC); 2322 if (err < 0) { 2323 kfree(urb->setup_packet); 2324 /* -EPERM: urb is being killed; 2325 * -ENODEV: device got disconnected 2326 */ 2327 if (err != -EPERM && err != -ENODEV) 2328 bt_dev_err(hdev, "urb %p failed to resubmit (%d)", 2329 urb, -err); 2330 usb_unanchor_urb(urb); 2331 } 2332 } 2333 2334 static int btusb_mtk_submit_wmt_recv_urb(struct hci_dev *hdev) 2335 { 2336 struct btusb_data *data = hci_get_drvdata(hdev); 2337 struct usb_ctrlrequest *dr; 2338 unsigned char *buf; 2339 int err, size = 64; 2340 unsigned int pipe; 2341 struct urb *urb; 2342 2343 urb = usb_alloc_urb(0, GFP_KERNEL); 2344 if (!urb) 2345 return -ENOMEM; 2346 2347 dr = kmalloc(sizeof(*dr), GFP_KERNEL); 2348 if (!dr) { 2349 usb_free_urb(urb); 2350 return -ENOMEM; 2351 } 2352 2353 dr->bRequestType = USB_TYPE_VENDOR | USB_DIR_IN; 2354 dr->bRequest = 1; 2355 dr->wIndex = cpu_to_le16(0); 2356 dr->wValue = cpu_to_le16(48); 2357 dr->wLength = cpu_to_le16(size); 2358 2359 buf = kmalloc(size, GFP_KERNEL); 2360 if (!buf) { 2361 kfree(dr); 2362 usb_free_urb(urb); 2363 return -ENOMEM; 2364 } 2365 2366 pipe = usb_rcvctrlpipe(data->udev, 0); 2367 2368 usb_fill_control_urb(urb, data->udev, pipe, (void *)dr, 2369 buf, size, btusb_mtk_wmt_recv, hdev); 2370 2371 urb->transfer_flags |= URB_FREE_BUFFER; 2372 2373 usb_anchor_urb(urb, &data->ctrl_anchor); 2374 err = usb_submit_urb(urb, GFP_KERNEL); 2375 if (err < 0) { 2376 if (err != -EPERM && err != -ENODEV) 2377 bt_dev_err(hdev, "urb %p submission failed (%d)", 2378 urb, -err); 2379 usb_unanchor_urb(urb); 2380 } 2381 2382 usb_free_urb(urb); 2383 2384 return err; 2385 } 2386 2387 static int btusb_mtk_hci_wmt_sync(struct hci_dev *hdev, 2388 struct btmtk_hci_wmt_params *wmt_params) 2389 { 2390 struct btusb_data *data = hci_get_drvdata(hdev); 2391 struct btmtk_hci_wmt_evt_funcc *wmt_evt_funcc; 2392 u32 hlen, status = BTMTK_WMT_INVALID; 2393 struct btmtk_hci_wmt_evt *wmt_evt; 2394 struct btmtk_hci_wmt_cmd *wc; 2395 struct btmtk_wmt_hdr *hdr; 2396 int err; 2397 2398 /* Send the WMT command and wait until the WMT event returns */ 2399 hlen = sizeof(*hdr) + wmt_params->dlen; 2400 if (hlen > 255) 2401 return -EINVAL; 2402 2403 wc = kzalloc(hlen, GFP_KERNEL); 2404 if (!wc) 2405 return -ENOMEM; 2406 2407 hdr = &wc->hdr; 2408 hdr->dir = 1; 2409 hdr->op = wmt_params->op; 2410 hdr->dlen = cpu_to_le16(wmt_params->dlen + 1); 2411 hdr->flag = wmt_params->flag; 2412 memcpy(wc->data, wmt_params->data, wmt_params->dlen); 2413 2414 set_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags); 2415 2416 err = __hci_cmd_send(hdev, 0xfc6f, hlen, wc); 2417 2418 if (err < 0) { 2419 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags); 2420 goto err_free_wc; 2421 } 2422 2423 /* Submit control IN URB on demand to process the WMT event */ 2424 err = btusb_mtk_submit_wmt_recv_urb(hdev); 2425 if (err < 0) 2426 goto err_free_wc; 2427 2428 /* The vendor specific WMT commands are all answered by a vendor 2429 * specific event and will have the Command Status or Command 2430 * Complete as with usual HCI command flow control. 2431 * 2432 * After sending the command, wait for BTUSB_TX_WAIT_VND_EVT 2433 * state to be cleared. The driver specific event receive routine 2434 * will clear that state and with that indicate completion of the 2435 * WMT command. 2436 */ 2437 err = wait_on_bit_timeout(&data->flags, BTUSB_TX_WAIT_VND_EVT, 2438 TASK_INTERRUPTIBLE, HCI_INIT_TIMEOUT); 2439 if (err == -EINTR) { 2440 bt_dev_err(hdev, "Execution of wmt command interrupted"); 2441 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags); 2442 goto err_free_wc; 2443 } 2444 2445 if (err) { 2446 bt_dev_err(hdev, "Execution of wmt command timed out"); 2447 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags); 2448 err = -ETIMEDOUT; 2449 goto err_free_wc; 2450 } 2451 2452 /* Parse and handle the return WMT event */ 2453 wmt_evt = (struct btmtk_hci_wmt_evt *)data->evt_skb->data; 2454 if (wmt_evt->whdr.op != hdr->op) { 2455 bt_dev_err(hdev, "Wrong op received %d expected %d", 2456 wmt_evt->whdr.op, hdr->op); 2457 err = -EIO; 2458 goto err_free_skb; 2459 } 2460 2461 switch (wmt_evt->whdr.op) { 2462 case BTMTK_WMT_SEMAPHORE: 2463 if (wmt_evt->whdr.flag == 2) 2464 status = BTMTK_WMT_PATCH_UNDONE; 2465 else 2466 status = BTMTK_WMT_PATCH_DONE; 2467 break; 2468 case BTMTK_WMT_FUNC_CTRL: 2469 wmt_evt_funcc = (struct btmtk_hci_wmt_evt_funcc *)wmt_evt; 2470 if (be16_to_cpu(wmt_evt_funcc->status) == 0x404) 2471 status = BTMTK_WMT_ON_DONE; 2472 else if (be16_to_cpu(wmt_evt_funcc->status) == 0x420) 2473 status = BTMTK_WMT_ON_PROGRESS; 2474 else 2475 status = BTMTK_WMT_ON_UNDONE; 2476 break; 2477 case BTMTK_WMT_PATCH_DWNLD: 2478 if (wmt_evt->whdr.flag == 2) 2479 status = BTMTK_WMT_PATCH_DONE; 2480 else if (wmt_evt->whdr.flag == 1) 2481 status = BTMTK_WMT_PATCH_PROGRESS; 2482 else 2483 status = BTMTK_WMT_PATCH_UNDONE; 2484 break; 2485 } 2486 2487 if (wmt_params->status) 2488 *wmt_params->status = status; 2489 2490 err_free_skb: 2491 kfree_skb(data->evt_skb); 2492 data->evt_skb = NULL; 2493 err_free_wc: 2494 kfree(wc); 2495 return err; 2496 } 2497 2498 static int btusb_mtk_func_query(struct hci_dev *hdev) 2499 { 2500 struct btmtk_hci_wmt_params wmt_params; 2501 int status, err; 2502 u8 param = 0; 2503 2504 /* Query whether the function is enabled */ 2505 wmt_params.op = BTMTK_WMT_FUNC_CTRL; 2506 wmt_params.flag = 4; 2507 wmt_params.dlen = sizeof(param); 2508 wmt_params.data = ¶m; 2509 wmt_params.status = &status; 2510 2511 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params); 2512 if (err < 0) { 2513 bt_dev_err(hdev, "Failed to query function status (%d)", err); 2514 return err; 2515 } 2516 2517 return status; 2518 } 2519 2520 static int btusb_mtk_uhw_reg_write(struct btusb_data *data, u32 reg, u32 val) 2521 { 2522 struct hci_dev *hdev = data->hdev; 2523 int pipe, err; 2524 void *buf; 2525 2526 buf = kzalloc(4, GFP_KERNEL); 2527 if (!buf) 2528 return -ENOMEM; 2529 2530 put_unaligned_le32(val, buf); 2531 2532 pipe = usb_sndctrlpipe(data->udev, 0); 2533 err = usb_control_msg(data->udev, pipe, 0x02, 2534 0x5E, 2535 reg >> 16, reg & 0xffff, 2536 buf, 4, USB_CTRL_SET_TIMEOUT); 2537 if (err < 0) { 2538 bt_dev_err(hdev, "Failed to write uhw reg(%d)", err); 2539 goto err_free_buf; 2540 } 2541 2542 err_free_buf: 2543 kfree(buf); 2544 2545 return err; 2546 } 2547 2548 static int btusb_mtk_uhw_reg_read(struct btusb_data *data, u32 reg, u32 *val) 2549 { 2550 struct hci_dev *hdev = data->hdev; 2551 int pipe, err; 2552 void *buf; 2553 2554 buf = kzalloc(4, GFP_KERNEL); 2555 if (!buf) 2556 return -ENOMEM; 2557 2558 pipe = usb_rcvctrlpipe(data->udev, 0); 2559 err = usb_control_msg(data->udev, pipe, 0x01, 2560 0xDE, 2561 reg >> 16, reg & 0xffff, 2562 buf, 4, USB_CTRL_SET_TIMEOUT); 2563 if (err < 0) { 2564 bt_dev_err(hdev, "Failed to read uhw reg(%d)", err); 2565 goto err_free_buf; 2566 } 2567 2568 *val = get_unaligned_le32(buf); 2569 bt_dev_dbg(hdev, "reg=%x, value=0x%08x", reg, *val); 2570 2571 err_free_buf: 2572 kfree(buf); 2573 2574 return err; 2575 } 2576 2577 static int btusb_mtk_reg_read(struct btusb_data *data, u32 reg, u32 *val) 2578 { 2579 int pipe, err, size = sizeof(u32); 2580 void *buf; 2581 2582 buf = kzalloc(size, GFP_KERNEL); 2583 if (!buf) 2584 return -ENOMEM; 2585 2586 pipe = usb_rcvctrlpipe(data->udev, 0); 2587 err = usb_control_msg(data->udev, pipe, 0x63, 2588 USB_TYPE_VENDOR | USB_DIR_IN, 2589 reg >> 16, reg & 0xffff, 2590 buf, size, USB_CTRL_SET_TIMEOUT); 2591 if (err < 0) 2592 goto err_free_buf; 2593 2594 *val = get_unaligned_le32(buf); 2595 2596 err_free_buf: 2597 kfree(buf); 2598 2599 return err; 2600 } 2601 2602 static int btusb_mtk_id_get(struct btusb_data *data, u32 reg, u32 *id) 2603 { 2604 return btusb_mtk_reg_read(data, reg, id); 2605 } 2606 2607 static int btusb_mtk_setup(struct hci_dev *hdev) 2608 { 2609 struct btusb_data *data = hci_get_drvdata(hdev); 2610 struct btmtk_hci_wmt_params wmt_params; 2611 ktime_t calltime, delta, rettime; 2612 struct btmtk_tci_sleep tci_sleep; 2613 unsigned long long duration; 2614 struct sk_buff *skb; 2615 const char *fwname; 2616 int err, status; 2617 u32 dev_id; 2618 char fw_bin_name[64]; 2619 u32 fw_version = 0; 2620 u8 param; 2621 2622 calltime = ktime_get(); 2623 2624 err = btusb_mtk_id_get(data, 0x80000008, &dev_id); 2625 if (err < 0) { 2626 bt_dev_err(hdev, "Failed to get device id (%d)", err); 2627 return err; 2628 } 2629 2630 if (!dev_id) { 2631 err = btusb_mtk_id_get(data, 0x70010200, &dev_id); 2632 if (err < 0) { 2633 bt_dev_err(hdev, "Failed to get device id (%d)", err); 2634 return err; 2635 } 2636 err = btusb_mtk_id_get(data, 0x80021004, &fw_version); 2637 if (err < 0) { 2638 bt_dev_err(hdev, "Failed to get fw version (%d)", err); 2639 return err; 2640 } 2641 } 2642 2643 switch (dev_id) { 2644 case 0x7663: 2645 fwname = FIRMWARE_MT7663; 2646 break; 2647 case 0x7668: 2648 fwname = FIRMWARE_MT7668; 2649 break; 2650 case 0x7922: 2651 case 0x7961: 2652 snprintf(fw_bin_name, sizeof(fw_bin_name), 2653 "mediatek/BT_RAM_CODE_MT%04x_1_%x_hdr.bin", 2654 dev_id & 0xffff, (fw_version & 0xff) + 1); 2655 err = btmtk_setup_firmware_79xx(hdev, fw_bin_name, 2656 btusb_mtk_hci_wmt_sync); 2657 if (err < 0) { 2658 bt_dev_err(hdev, "Failed to set up firmware (%d)", err); 2659 return err; 2660 } 2661 2662 /* It's Device EndPoint Reset Option Register */ 2663 btusb_mtk_uhw_reg_write(data, MTK_EP_RST_OPT, MTK_EP_RST_IN_OUT_OPT); 2664 2665 /* Enable Bluetooth protocol */ 2666 param = 1; 2667 wmt_params.op = BTMTK_WMT_FUNC_CTRL; 2668 wmt_params.flag = 0; 2669 wmt_params.dlen = sizeof(param); 2670 wmt_params.data = ¶m; 2671 wmt_params.status = NULL; 2672 2673 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params); 2674 if (err < 0) { 2675 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err); 2676 return err; 2677 } 2678 2679 hci_set_msft_opcode(hdev, 0xFD30); 2680 hci_set_aosp_capable(hdev); 2681 goto done; 2682 default: 2683 bt_dev_err(hdev, "Unsupported hardware variant (%08x)", 2684 dev_id); 2685 return -ENODEV; 2686 } 2687 2688 /* Query whether the firmware is already download */ 2689 wmt_params.op = BTMTK_WMT_SEMAPHORE; 2690 wmt_params.flag = 1; 2691 wmt_params.dlen = 0; 2692 wmt_params.data = NULL; 2693 wmt_params.status = &status; 2694 2695 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params); 2696 if (err < 0) { 2697 bt_dev_err(hdev, "Failed to query firmware status (%d)", err); 2698 return err; 2699 } 2700 2701 if (status == BTMTK_WMT_PATCH_DONE) { 2702 bt_dev_info(hdev, "firmware already downloaded"); 2703 goto ignore_setup_fw; 2704 } 2705 2706 /* Setup a firmware which the device definitely requires */ 2707 err = btmtk_setup_firmware(hdev, fwname, 2708 btusb_mtk_hci_wmt_sync); 2709 if (err < 0) 2710 return err; 2711 2712 ignore_setup_fw: 2713 err = readx_poll_timeout(btusb_mtk_func_query, hdev, status, 2714 status < 0 || status != BTMTK_WMT_ON_PROGRESS, 2715 2000, 5000000); 2716 /* -ETIMEDOUT happens */ 2717 if (err < 0) 2718 return err; 2719 2720 /* The other errors happen in btusb_mtk_func_query */ 2721 if (status < 0) 2722 return status; 2723 2724 if (status == BTMTK_WMT_ON_DONE) { 2725 bt_dev_info(hdev, "function already on"); 2726 goto ignore_func_on; 2727 } 2728 2729 /* Enable Bluetooth protocol */ 2730 param = 1; 2731 wmt_params.op = BTMTK_WMT_FUNC_CTRL; 2732 wmt_params.flag = 0; 2733 wmt_params.dlen = sizeof(param); 2734 wmt_params.data = ¶m; 2735 wmt_params.status = NULL; 2736 2737 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params); 2738 if (err < 0) { 2739 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err); 2740 return err; 2741 } 2742 2743 ignore_func_on: 2744 /* Apply the low power environment setup */ 2745 tci_sleep.mode = 0x5; 2746 tci_sleep.duration = cpu_to_le16(0x640); 2747 tci_sleep.host_duration = cpu_to_le16(0x640); 2748 tci_sleep.host_wakeup_pin = 0; 2749 tci_sleep.time_compensation = 0; 2750 2751 skb = __hci_cmd_sync(hdev, 0xfc7a, sizeof(tci_sleep), &tci_sleep, 2752 HCI_INIT_TIMEOUT); 2753 if (IS_ERR(skb)) { 2754 err = PTR_ERR(skb); 2755 bt_dev_err(hdev, "Failed to apply low power setting (%d)", err); 2756 return err; 2757 } 2758 kfree_skb(skb); 2759 2760 done: 2761 rettime = ktime_get(); 2762 delta = ktime_sub(rettime, calltime); 2763 duration = (unsigned long long)ktime_to_ns(delta) >> 10; 2764 2765 bt_dev_info(hdev, "Device setup in %llu usecs", duration); 2766 2767 return 0; 2768 } 2769 2770 static int btusb_mtk_shutdown(struct hci_dev *hdev) 2771 { 2772 struct btmtk_hci_wmt_params wmt_params; 2773 u8 param = 0; 2774 int err; 2775 2776 /* Disable the device */ 2777 wmt_params.op = BTMTK_WMT_FUNC_CTRL; 2778 wmt_params.flag = 0; 2779 wmt_params.dlen = sizeof(param); 2780 wmt_params.data = ¶m; 2781 wmt_params.status = NULL; 2782 2783 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params); 2784 if (err < 0) { 2785 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err); 2786 return err; 2787 } 2788 2789 return 0; 2790 } 2791 2792 static void btusb_mtk_cmd_timeout(struct hci_dev *hdev) 2793 { 2794 struct btusb_data *data = hci_get_drvdata(hdev); 2795 u32 val; 2796 int err, retry = 0; 2797 2798 /* It's MediaTek specific bluetooth reset mechanism via USB */ 2799 if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) { 2800 bt_dev_err(hdev, "last reset failed? Not resetting again"); 2801 return; 2802 } 2803 2804 err = usb_autopm_get_interface(data->intf); 2805 if (err < 0) 2806 return; 2807 2808 btusb_stop_traffic(data); 2809 usb_kill_anchored_urbs(&data->tx_anchor); 2810 2811 /* It's Device EndPoint Reset Option Register */ 2812 bt_dev_dbg(hdev, "Initiating reset mechanism via uhw"); 2813 btusb_mtk_uhw_reg_write(data, MTK_EP_RST_OPT, MTK_EP_RST_IN_OUT_OPT); 2814 btusb_mtk_uhw_reg_read(data, MTK_BT_WDT_STATUS, &val); 2815 2816 /* Reset the bluetooth chip via USB interface. */ 2817 btusb_mtk_uhw_reg_write(data, MTK_BT_SUBSYS_RST, 1); 2818 btusb_mtk_uhw_reg_write(data, MTK_UDMA_INT_STA_BT, 0x000000FF); 2819 btusb_mtk_uhw_reg_read(data, MTK_UDMA_INT_STA_BT, &val); 2820 btusb_mtk_uhw_reg_write(data, MTK_UDMA_INT_STA_BT1, 0x000000FF); 2821 btusb_mtk_uhw_reg_read(data, MTK_UDMA_INT_STA_BT1, &val); 2822 /* MT7921 need to delay 20ms between toggle reset bit */ 2823 msleep(20); 2824 btusb_mtk_uhw_reg_write(data, MTK_BT_SUBSYS_RST, 0); 2825 btusb_mtk_uhw_reg_read(data, MTK_BT_SUBSYS_RST, &val); 2826 2827 /* Poll the register until reset is completed */ 2828 do { 2829 btusb_mtk_uhw_reg_read(data, MTK_BT_MISC, &val); 2830 if (val & MTK_BT_RST_DONE) { 2831 bt_dev_dbg(hdev, "Bluetooth Reset Successfully"); 2832 break; 2833 } 2834 2835 bt_dev_dbg(hdev, "Polling Bluetooth Reset CR"); 2836 retry++; 2837 msleep(MTK_BT_RESET_WAIT_MS); 2838 } while (retry < MTK_BT_RESET_NUM_TRIES); 2839 2840 btusb_mtk_id_get(data, 0x70010200, &val); 2841 if (!val) 2842 bt_dev_err(hdev, "Can't get device id, subsys reset fail."); 2843 2844 usb_queue_reset_device(data->intf); 2845 2846 clear_bit(BTUSB_HW_RESET_ACTIVE, &data->flags); 2847 } 2848 2849 static int btusb_recv_acl_mtk(struct hci_dev *hdev, struct sk_buff *skb) 2850 { 2851 struct btusb_data *data = hci_get_drvdata(hdev); 2852 u16 handle = le16_to_cpu(hci_acl_hdr(skb)->handle); 2853 2854 switch (handle) { 2855 case 0xfc6f: /* Firmware dump from device */ 2856 /* When the firmware hangs, the device can no longer 2857 * suspend and thus disable auto-suspend. 2858 */ 2859 usb_disable_autosuspend(data->udev); 2860 fallthrough; 2861 case 0x05ff: /* Firmware debug logging 1 */ 2862 case 0x05fe: /* Firmware debug logging 2 */ 2863 return hci_recv_diag(hdev, skb); 2864 } 2865 2866 return hci_recv_frame(hdev, skb); 2867 } 2868 2869 #ifdef CONFIG_PM 2870 /* Configure an out-of-band gpio as wake-up pin, if specified in device tree */ 2871 static int marvell_config_oob_wake(struct hci_dev *hdev) 2872 { 2873 struct sk_buff *skb; 2874 struct btusb_data *data = hci_get_drvdata(hdev); 2875 struct device *dev = &data->udev->dev; 2876 u16 pin, gap, opcode; 2877 int ret; 2878 u8 cmd[5]; 2879 2880 /* Move on if no wakeup pin specified */ 2881 if (of_property_read_u16(dev->of_node, "marvell,wakeup-pin", &pin) || 2882 of_property_read_u16(dev->of_node, "marvell,wakeup-gap-ms", &gap)) 2883 return 0; 2884 2885 /* Vendor specific command to configure a GPIO as wake-up pin */ 2886 opcode = hci_opcode_pack(0x3F, 0x59); 2887 cmd[0] = opcode & 0xFF; 2888 cmd[1] = opcode >> 8; 2889 cmd[2] = 2; /* length of parameters that follow */ 2890 cmd[3] = pin; 2891 cmd[4] = gap; /* time in ms, for which wakeup pin should be asserted */ 2892 2893 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL); 2894 if (!skb) { 2895 bt_dev_err(hdev, "%s: No memory", __func__); 2896 return -ENOMEM; 2897 } 2898 2899 skb_put_data(skb, cmd, sizeof(cmd)); 2900 hci_skb_pkt_type(skb) = HCI_COMMAND_PKT; 2901 2902 ret = btusb_send_frame(hdev, skb); 2903 if (ret) { 2904 bt_dev_err(hdev, "%s: configuration failed", __func__); 2905 kfree_skb(skb); 2906 return ret; 2907 } 2908 2909 return 0; 2910 } 2911 #endif 2912 2913 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev, 2914 const bdaddr_t *bdaddr) 2915 { 2916 struct sk_buff *skb; 2917 u8 buf[8]; 2918 long ret; 2919 2920 buf[0] = 0xfe; 2921 buf[1] = sizeof(bdaddr_t); 2922 memcpy(buf + 2, bdaddr, sizeof(bdaddr_t)); 2923 2924 skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT); 2925 if (IS_ERR(skb)) { 2926 ret = PTR_ERR(skb); 2927 bt_dev_err(hdev, "changing Marvell device address failed (%ld)", 2928 ret); 2929 return ret; 2930 } 2931 kfree_skb(skb); 2932 2933 return 0; 2934 } 2935 2936 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev, 2937 const bdaddr_t *bdaddr) 2938 { 2939 struct sk_buff *skb; 2940 u8 buf[10]; 2941 long ret; 2942 2943 buf[0] = 0x01; 2944 buf[1] = 0x01; 2945 buf[2] = 0x00; 2946 buf[3] = sizeof(bdaddr_t); 2947 memcpy(buf + 4, bdaddr, sizeof(bdaddr_t)); 2948 2949 skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT); 2950 if (IS_ERR(skb)) { 2951 ret = PTR_ERR(skb); 2952 bt_dev_err(hdev, "Change address command failed (%ld)", ret); 2953 return ret; 2954 } 2955 kfree_skb(skb); 2956 2957 return 0; 2958 } 2959 2960 static int btusb_set_bdaddr_wcn6855(struct hci_dev *hdev, 2961 const bdaddr_t *bdaddr) 2962 { 2963 struct sk_buff *skb; 2964 u8 buf[6]; 2965 long ret; 2966 2967 memcpy(buf, bdaddr, sizeof(bdaddr_t)); 2968 2969 skb = __hci_cmd_sync_ev(hdev, 0xfc14, sizeof(buf), buf, 2970 HCI_EV_CMD_COMPLETE, HCI_INIT_TIMEOUT); 2971 if (IS_ERR(skb)) { 2972 ret = PTR_ERR(skb); 2973 bt_dev_err(hdev, "Change address command failed (%ld)", ret); 2974 return ret; 2975 } 2976 kfree_skb(skb); 2977 2978 return 0; 2979 } 2980 2981 #define QCA_DFU_PACKET_LEN 4096 2982 2983 #define QCA_GET_TARGET_VERSION 0x09 2984 #define QCA_CHECK_STATUS 0x05 2985 #define QCA_DFU_DOWNLOAD 0x01 2986 2987 #define QCA_SYSCFG_UPDATED 0x40 2988 #define QCA_PATCH_UPDATED 0x80 2989 #define QCA_DFU_TIMEOUT 3000 2990 #define QCA_FLAG_MULTI_NVM 0x80 2991 2992 #define WCN6855_2_0_RAM_VERSION_GF 0x400c1200 2993 #define WCN6855_2_1_RAM_VERSION_GF 0x400c1211 2994 2995 struct qca_version { 2996 __le32 rom_version; 2997 __le32 patch_version; 2998 __le32 ram_version; 2999 __u8 chip_id; 3000 __u8 platform_id; 3001 __le16 flag; 3002 __u8 reserved[4]; 3003 } __packed; 3004 3005 struct qca_rampatch_version { 3006 __le16 rom_version_high; 3007 __le16 rom_version_low; 3008 __le16 patch_version; 3009 } __packed; 3010 3011 struct qca_device_info { 3012 u32 rom_version; 3013 u8 rampatch_hdr; /* length of header in rampatch */ 3014 u8 nvm_hdr; /* length of header in NVM */ 3015 u8 ver_offset; /* offset of version structure in rampatch */ 3016 }; 3017 3018 static const struct qca_device_info qca_devices_table[] = { 3019 { 0x00000100, 20, 4, 8 }, /* Rome 1.0 */ 3020 { 0x00000101, 20, 4, 8 }, /* Rome 1.1 */ 3021 { 0x00000200, 28, 4, 16 }, /* Rome 2.0 */ 3022 { 0x00000201, 28, 4, 16 }, /* Rome 2.1 */ 3023 { 0x00000300, 28, 4, 16 }, /* Rome 3.0 */ 3024 { 0x00000302, 28, 4, 16 }, /* Rome 3.2 */ 3025 { 0x00130100, 40, 4, 16 }, /* WCN6855 1.0 */ 3026 { 0x00130200, 40, 4, 16 }, /* WCN6855 2.0 */ 3027 { 0x00130201, 40, 4, 16 }, /* WCN6855 2.1 */ 3028 }; 3029 3030 static int btusb_qca_send_vendor_req(struct usb_device *udev, u8 request, 3031 void *data, u16 size) 3032 { 3033 int pipe, err; 3034 u8 *buf; 3035 3036 buf = kmalloc(size, GFP_KERNEL); 3037 if (!buf) 3038 return -ENOMEM; 3039 3040 /* Found some of USB hosts have IOT issues with ours so that we should 3041 * not wait until HCI layer is ready. 3042 */ 3043 pipe = usb_rcvctrlpipe(udev, 0); 3044 err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN, 3045 0, 0, buf, size, USB_CTRL_SET_TIMEOUT); 3046 if (err < 0) { 3047 dev_err(&udev->dev, "Failed to access otp area (%d)", err); 3048 goto done; 3049 } 3050 3051 memcpy(data, buf, size); 3052 3053 done: 3054 kfree(buf); 3055 3056 return err; 3057 } 3058 3059 static int btusb_setup_qca_download_fw(struct hci_dev *hdev, 3060 const struct firmware *firmware, 3061 size_t hdr_size) 3062 { 3063 struct btusb_data *btdata = hci_get_drvdata(hdev); 3064 struct usb_device *udev = btdata->udev; 3065 size_t count, size, sent = 0; 3066 int pipe, len, err; 3067 u8 *buf; 3068 3069 buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL); 3070 if (!buf) 3071 return -ENOMEM; 3072 3073 count = firmware->size; 3074 3075 size = min_t(size_t, count, hdr_size); 3076 memcpy(buf, firmware->data, size); 3077 3078 /* USB patches should go down to controller through USB path 3079 * because binary format fits to go down through USB channel. 3080 * USB control path is for patching headers and USB bulk is for 3081 * patch body. 3082 */ 3083 pipe = usb_sndctrlpipe(udev, 0); 3084 err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR, 3085 0, 0, buf, size, USB_CTRL_SET_TIMEOUT); 3086 if (err < 0) { 3087 bt_dev_err(hdev, "Failed to send headers (%d)", err); 3088 goto done; 3089 } 3090 3091 sent += size; 3092 count -= size; 3093 3094 /* ep2 need time to switch from function acl to function dfu, 3095 * so we add 20ms delay here. 3096 */ 3097 msleep(20); 3098 3099 while (count) { 3100 size = min_t(size_t, count, QCA_DFU_PACKET_LEN); 3101 3102 memcpy(buf, firmware->data + sent, size); 3103 3104 pipe = usb_sndbulkpipe(udev, 0x02); 3105 err = usb_bulk_msg(udev, pipe, buf, size, &len, 3106 QCA_DFU_TIMEOUT); 3107 if (err < 0) { 3108 bt_dev_err(hdev, "Failed to send body at %zd of %zd (%d)", 3109 sent, firmware->size, err); 3110 break; 3111 } 3112 3113 if (size != len) { 3114 bt_dev_err(hdev, "Failed to get bulk buffer"); 3115 err = -EILSEQ; 3116 break; 3117 } 3118 3119 sent += size; 3120 count -= size; 3121 } 3122 3123 done: 3124 kfree(buf); 3125 return err; 3126 } 3127 3128 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev, 3129 struct qca_version *ver, 3130 const struct qca_device_info *info) 3131 { 3132 struct qca_rampatch_version *rver; 3133 const struct firmware *fw; 3134 u32 ver_rom, ver_patch, rver_rom; 3135 u16 rver_rom_low, rver_rom_high, rver_patch; 3136 char fwname[64]; 3137 int err; 3138 3139 ver_rom = le32_to_cpu(ver->rom_version); 3140 ver_patch = le32_to_cpu(ver->patch_version); 3141 3142 snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom); 3143 3144 err = request_firmware(&fw, fwname, &hdev->dev); 3145 if (err) { 3146 bt_dev_err(hdev, "failed to request rampatch file: %s (%d)", 3147 fwname, err); 3148 return err; 3149 } 3150 3151 bt_dev_info(hdev, "using rampatch file: %s", fwname); 3152 3153 rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset); 3154 rver_rom_low = le16_to_cpu(rver->rom_version_low); 3155 rver_patch = le16_to_cpu(rver->patch_version); 3156 3157 if (ver_rom & ~0xffffU) { 3158 rver_rom_high = le16_to_cpu(rver->rom_version_high); 3159 rver_rom = le32_to_cpu(rver_rom_high << 16 | rver_rom_low); 3160 } else { 3161 rver_rom = rver_rom_low; 3162 } 3163 3164 bt_dev_info(hdev, "QCA: patch rome 0x%x build 0x%x, " 3165 "firmware rome 0x%x build 0x%x", 3166 rver_rom, rver_patch, ver_rom, ver_patch); 3167 3168 if (rver_rom != ver_rom || rver_patch <= ver_patch) { 3169 bt_dev_err(hdev, "rampatch file version did not match with firmware"); 3170 err = -EINVAL; 3171 goto done; 3172 } 3173 3174 err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr); 3175 3176 done: 3177 release_firmware(fw); 3178 3179 return err; 3180 } 3181 3182 static void btusb_generate_qca_nvm_name(char *fwname, size_t max_size, 3183 const struct qca_version *ver) 3184 { 3185 u32 rom_version = le32_to_cpu(ver->rom_version); 3186 u16 flag = le16_to_cpu(ver->flag); 3187 3188 if (((flag >> 8) & 0xff) == QCA_FLAG_MULTI_NVM) { 3189 /* The board_id should be split into two bytes 3190 * The 1st byte is chip ID, and the 2nd byte is platform ID 3191 * For example, board ID 0x010A, 0x01 is platform ID. 0x0A is chip ID 3192 * we have several platforms, and platform IDs are continuously added 3193 * Platform ID: 3194 * 0x00 is for Mobile 3195 * 0x01 is for X86 3196 * 0x02 is for Automotive 3197 * 0x03 is for Consumer electronic 3198 */ 3199 u16 board_id = (ver->chip_id << 8) + ver->platform_id; 3200 const char *variant; 3201 3202 switch (le32_to_cpu(ver->ram_version)) { 3203 case WCN6855_2_0_RAM_VERSION_GF: 3204 case WCN6855_2_1_RAM_VERSION_GF: 3205 variant = "_gf"; 3206 break; 3207 default: 3208 variant = ""; 3209 break; 3210 } 3211 3212 if (board_id == 0) { 3213 snprintf(fwname, max_size, "qca/nvm_usb_%08x%s.bin", 3214 rom_version, variant); 3215 } else { 3216 snprintf(fwname, max_size, "qca/nvm_usb_%08x%s_%04x.bin", 3217 rom_version, variant, board_id); 3218 } 3219 } else { 3220 snprintf(fwname, max_size, "qca/nvm_usb_%08x.bin", 3221 rom_version); 3222 } 3223 3224 } 3225 3226 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev, 3227 struct qca_version *ver, 3228 const struct qca_device_info *info) 3229 { 3230 const struct firmware *fw; 3231 char fwname[64]; 3232 int err; 3233 3234 btusb_generate_qca_nvm_name(fwname, sizeof(fwname), ver); 3235 3236 err = request_firmware(&fw, fwname, &hdev->dev); 3237 if (err) { 3238 bt_dev_err(hdev, "failed to request NVM file: %s (%d)", 3239 fwname, err); 3240 return err; 3241 } 3242 3243 bt_dev_info(hdev, "using NVM file: %s", fwname); 3244 3245 err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr); 3246 3247 release_firmware(fw); 3248 3249 return err; 3250 } 3251 3252 /* identify the ROM version and check whether patches are needed */ 3253 static bool btusb_qca_need_patch(struct usb_device *udev) 3254 { 3255 struct qca_version ver; 3256 3257 if (btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver, 3258 sizeof(ver)) < 0) 3259 return false; 3260 /* only low ROM versions need patches */ 3261 return !(le32_to_cpu(ver.rom_version) & ~0xffffU); 3262 } 3263 3264 static int btusb_setup_qca(struct hci_dev *hdev) 3265 { 3266 struct btusb_data *btdata = hci_get_drvdata(hdev); 3267 struct usb_device *udev = btdata->udev; 3268 const struct qca_device_info *info = NULL; 3269 struct qca_version ver; 3270 u32 ver_rom; 3271 u8 status; 3272 int i, err; 3273 3274 err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver, 3275 sizeof(ver)); 3276 if (err < 0) 3277 return err; 3278 3279 ver_rom = le32_to_cpu(ver.rom_version); 3280 3281 for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) { 3282 if (ver_rom == qca_devices_table[i].rom_version) 3283 info = &qca_devices_table[i]; 3284 } 3285 if (!info) { 3286 /* If the rom_version is not matched in the qca_devices_table 3287 * and the high ROM version is not zero, we assume this chip no 3288 * need to load the rampatch and nvm. 3289 */ 3290 if (ver_rom & ~0xffffU) 3291 return 0; 3292 3293 bt_dev_err(hdev, "don't support firmware rome 0x%x", ver_rom); 3294 return -ENODEV; 3295 } 3296 3297 err = btusb_qca_send_vendor_req(udev, QCA_CHECK_STATUS, &status, 3298 sizeof(status)); 3299 if (err < 0) 3300 return err; 3301 3302 if (!(status & QCA_PATCH_UPDATED)) { 3303 err = btusb_setup_qca_load_rampatch(hdev, &ver, info); 3304 if (err < 0) 3305 return err; 3306 } 3307 3308 err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver, 3309 sizeof(ver)); 3310 if (err < 0) 3311 return err; 3312 3313 if (!(status & QCA_SYSCFG_UPDATED)) { 3314 err = btusb_setup_qca_load_nvm(hdev, &ver, info); 3315 if (err < 0) 3316 return err; 3317 } 3318 3319 return 0; 3320 } 3321 3322 static inline int __set_diag_interface(struct hci_dev *hdev) 3323 { 3324 struct btusb_data *data = hci_get_drvdata(hdev); 3325 struct usb_interface *intf = data->diag; 3326 int i; 3327 3328 if (!data->diag) 3329 return -ENODEV; 3330 3331 data->diag_tx_ep = NULL; 3332 data->diag_rx_ep = NULL; 3333 3334 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { 3335 struct usb_endpoint_descriptor *ep_desc; 3336 3337 ep_desc = &intf->cur_altsetting->endpoint[i].desc; 3338 3339 if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) { 3340 data->diag_tx_ep = ep_desc; 3341 continue; 3342 } 3343 3344 if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) { 3345 data->diag_rx_ep = ep_desc; 3346 continue; 3347 } 3348 } 3349 3350 if (!data->diag_tx_ep || !data->diag_rx_ep) { 3351 bt_dev_err(hdev, "invalid diagnostic descriptors"); 3352 return -ENODEV; 3353 } 3354 3355 return 0; 3356 } 3357 3358 static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable) 3359 { 3360 struct btusb_data *data = hci_get_drvdata(hdev); 3361 struct sk_buff *skb; 3362 struct urb *urb; 3363 unsigned int pipe; 3364 3365 if (!data->diag_tx_ep) 3366 return ERR_PTR(-ENODEV); 3367 3368 urb = usb_alloc_urb(0, GFP_KERNEL); 3369 if (!urb) 3370 return ERR_PTR(-ENOMEM); 3371 3372 skb = bt_skb_alloc(2, GFP_KERNEL); 3373 if (!skb) { 3374 usb_free_urb(urb); 3375 return ERR_PTR(-ENOMEM); 3376 } 3377 3378 skb_put_u8(skb, 0xf0); 3379 skb_put_u8(skb, enable); 3380 3381 pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress); 3382 3383 usb_fill_bulk_urb(urb, data->udev, pipe, 3384 skb->data, skb->len, btusb_tx_complete, skb); 3385 3386 skb->dev = (void *)hdev; 3387 3388 return urb; 3389 } 3390 3391 static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable) 3392 { 3393 struct btusb_data *data = hci_get_drvdata(hdev); 3394 struct urb *urb; 3395 3396 if (!data->diag) 3397 return -ENODEV; 3398 3399 if (!test_bit(HCI_RUNNING, &hdev->flags)) 3400 return -ENETDOWN; 3401 3402 urb = alloc_diag_urb(hdev, enable); 3403 if (IS_ERR(urb)) 3404 return PTR_ERR(urb); 3405 3406 return submit_or_queue_tx_urb(hdev, urb); 3407 } 3408 3409 #ifdef CONFIG_PM 3410 static irqreturn_t btusb_oob_wake_handler(int irq, void *priv) 3411 { 3412 struct btusb_data *data = priv; 3413 3414 pm_wakeup_event(&data->udev->dev, 0); 3415 pm_system_wakeup(); 3416 3417 /* Disable only if not already disabled (keep it balanced) */ 3418 if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) { 3419 disable_irq_nosync(irq); 3420 disable_irq_wake(irq); 3421 } 3422 return IRQ_HANDLED; 3423 } 3424 3425 static const struct of_device_id btusb_match_table[] = { 3426 { .compatible = "usb1286,204e" }, 3427 { .compatible = "usbcf3,e300" }, /* QCA6174A */ 3428 { .compatible = "usb4ca,301a" }, /* QCA6174A (Lite-On) */ 3429 { } 3430 }; 3431 MODULE_DEVICE_TABLE(of, btusb_match_table); 3432 3433 /* Use an oob wakeup pin? */ 3434 static int btusb_config_oob_wake(struct hci_dev *hdev) 3435 { 3436 struct btusb_data *data = hci_get_drvdata(hdev); 3437 struct device *dev = &data->udev->dev; 3438 int irq, ret; 3439 3440 clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags); 3441 3442 if (!of_match_device(btusb_match_table, dev)) 3443 return 0; 3444 3445 /* Move on if no IRQ specified */ 3446 irq = of_irq_get_byname(dev->of_node, "wakeup"); 3447 if (irq <= 0) { 3448 bt_dev_dbg(hdev, "%s: no OOB Wakeup IRQ in DT", __func__); 3449 return 0; 3450 } 3451 3452 irq_set_status_flags(irq, IRQ_NOAUTOEN); 3453 ret = devm_request_irq(&hdev->dev, irq, btusb_oob_wake_handler, 3454 0, "OOB Wake-on-BT", data); 3455 if (ret) { 3456 bt_dev_err(hdev, "%s: IRQ request failed", __func__); 3457 return ret; 3458 } 3459 3460 ret = device_init_wakeup(dev, true); 3461 if (ret) { 3462 bt_dev_err(hdev, "%s: failed to init_wakeup", __func__); 3463 return ret; 3464 } 3465 3466 data->oob_wake_irq = irq; 3467 bt_dev_info(hdev, "OOB Wake-on-BT configured at IRQ %u", irq); 3468 return 0; 3469 } 3470 #endif 3471 3472 static void btusb_check_needs_reset_resume(struct usb_interface *intf) 3473 { 3474 if (dmi_check_system(btusb_needs_reset_resume_table)) 3475 interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME; 3476 } 3477 3478 static bool btusb_wakeup(struct hci_dev *hdev) 3479 { 3480 struct btusb_data *data = hci_get_drvdata(hdev); 3481 3482 return device_may_wakeup(&data->udev->dev); 3483 } 3484 3485 static int btusb_shutdown_qca(struct hci_dev *hdev) 3486 { 3487 struct sk_buff *skb; 3488 3489 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT); 3490 if (IS_ERR(skb)) { 3491 bt_dev_err(hdev, "HCI reset during shutdown failed"); 3492 return PTR_ERR(skb); 3493 } 3494 kfree_skb(skb); 3495 3496 return 0; 3497 } 3498 3499 static ssize_t force_poll_sync_read(struct file *file, char __user *user_buf, 3500 size_t count, loff_t *ppos) 3501 { 3502 struct btusb_data *data = file->private_data; 3503 char buf[3]; 3504 3505 buf[0] = data->poll_sync ? 'Y' : 'N'; 3506 buf[1] = '\n'; 3507 buf[2] = '\0'; 3508 return simple_read_from_buffer(user_buf, count, ppos, buf, 2); 3509 } 3510 3511 static ssize_t force_poll_sync_write(struct file *file, 3512 const char __user *user_buf, 3513 size_t count, loff_t *ppos) 3514 { 3515 struct btusb_data *data = file->private_data; 3516 bool enable; 3517 int err; 3518 3519 err = kstrtobool_from_user(user_buf, count, &enable); 3520 if (err) 3521 return err; 3522 3523 /* Only allow changes while the adapter is down */ 3524 if (test_bit(HCI_UP, &data->hdev->flags)) 3525 return -EPERM; 3526 3527 if (data->poll_sync == enable) 3528 return -EALREADY; 3529 3530 data->poll_sync = enable; 3531 3532 return count; 3533 } 3534 3535 static const struct file_operations force_poll_sync_fops = { 3536 .open = simple_open, 3537 .read = force_poll_sync_read, 3538 .write = force_poll_sync_write, 3539 .llseek = default_llseek, 3540 }; 3541 3542 static int btusb_probe(struct usb_interface *intf, 3543 const struct usb_device_id *id) 3544 { 3545 struct usb_endpoint_descriptor *ep_desc; 3546 struct gpio_desc *reset_gpio; 3547 struct btusb_data *data; 3548 struct hci_dev *hdev; 3549 unsigned ifnum_base; 3550 int i, err, priv_size; 3551 3552 BT_DBG("intf %p id %p", intf, id); 3553 3554 /* interface numbers are hardcoded in the spec */ 3555 if (intf->cur_altsetting->desc.bInterfaceNumber != 0) { 3556 if (!(id->driver_info & BTUSB_IFNUM_2)) 3557 return -ENODEV; 3558 if (intf->cur_altsetting->desc.bInterfaceNumber != 2) 3559 return -ENODEV; 3560 } 3561 3562 ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber; 3563 3564 if (!id->driver_info) { 3565 const struct usb_device_id *match; 3566 3567 match = usb_match_id(intf, blacklist_table); 3568 if (match) 3569 id = match; 3570 } 3571 3572 if (id->driver_info == BTUSB_IGNORE) 3573 return -ENODEV; 3574 3575 if (id->driver_info & BTUSB_ATH3012) { 3576 struct usb_device *udev = interface_to_usbdev(intf); 3577 3578 /* Old firmware would otherwise let ath3k driver load 3579 * patch and sysconfig files 3580 */ 3581 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001 && 3582 !btusb_qca_need_patch(udev)) 3583 return -ENODEV; 3584 } 3585 3586 data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL); 3587 if (!data) 3588 return -ENOMEM; 3589 3590 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { 3591 ep_desc = &intf->cur_altsetting->endpoint[i].desc; 3592 3593 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) { 3594 data->intr_ep = ep_desc; 3595 continue; 3596 } 3597 3598 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) { 3599 data->bulk_tx_ep = ep_desc; 3600 continue; 3601 } 3602 3603 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) { 3604 data->bulk_rx_ep = ep_desc; 3605 continue; 3606 } 3607 } 3608 3609 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) 3610 return -ENODEV; 3611 3612 if (id->driver_info & BTUSB_AMP) { 3613 data->cmdreq_type = USB_TYPE_CLASS | 0x01; 3614 data->cmdreq = 0x2b; 3615 } else { 3616 data->cmdreq_type = USB_TYPE_CLASS; 3617 data->cmdreq = 0x00; 3618 } 3619 3620 data->udev = interface_to_usbdev(intf); 3621 data->intf = intf; 3622 3623 INIT_WORK(&data->work, btusb_work); 3624 INIT_WORK(&data->waker, btusb_waker); 3625 INIT_DELAYED_WORK(&data->rx_work, btusb_rx_work); 3626 3627 skb_queue_head_init(&data->acl_q); 3628 3629 init_usb_anchor(&data->deferred); 3630 init_usb_anchor(&data->tx_anchor); 3631 spin_lock_init(&data->txlock); 3632 3633 init_usb_anchor(&data->intr_anchor); 3634 init_usb_anchor(&data->bulk_anchor); 3635 init_usb_anchor(&data->isoc_anchor); 3636 init_usb_anchor(&data->diag_anchor); 3637 init_usb_anchor(&data->ctrl_anchor); 3638 spin_lock_init(&data->rxlock); 3639 3640 priv_size = 0; 3641 3642 data->recv_event = hci_recv_frame; 3643 data->recv_bulk = btusb_recv_bulk; 3644 3645 if (id->driver_info & BTUSB_INTEL_COMBINED) { 3646 /* Allocate extra space for Intel device */ 3647 priv_size += sizeof(struct btintel_data); 3648 3649 /* Override the rx handlers */ 3650 data->recv_event = btusb_recv_event_intel; 3651 data->recv_bulk = btusb_recv_bulk_intel; 3652 } 3653 3654 data->recv_acl = hci_recv_frame; 3655 3656 hdev = hci_alloc_dev_priv(priv_size); 3657 if (!hdev) 3658 return -ENOMEM; 3659 3660 hdev->bus = HCI_USB; 3661 hci_set_drvdata(hdev, data); 3662 3663 if (id->driver_info & BTUSB_AMP) 3664 hdev->dev_type = HCI_AMP; 3665 else 3666 hdev->dev_type = HCI_PRIMARY; 3667 3668 data->hdev = hdev; 3669 3670 SET_HCIDEV_DEV(hdev, &intf->dev); 3671 3672 reset_gpio = gpiod_get_optional(&data->udev->dev, "reset", 3673 GPIOD_OUT_LOW); 3674 if (IS_ERR(reset_gpio)) { 3675 err = PTR_ERR(reset_gpio); 3676 goto out_free_dev; 3677 } else if (reset_gpio) { 3678 data->reset_gpio = reset_gpio; 3679 } 3680 3681 hdev->open = btusb_open; 3682 hdev->close = btusb_close; 3683 hdev->flush = btusb_flush; 3684 hdev->send = btusb_send_frame; 3685 hdev->notify = btusb_notify; 3686 hdev->wakeup = btusb_wakeup; 3687 3688 #ifdef CONFIG_PM 3689 err = btusb_config_oob_wake(hdev); 3690 if (err) 3691 goto out_free_dev; 3692 3693 /* Marvell devices may need a specific chip configuration */ 3694 if (id->driver_info & BTUSB_MARVELL && data->oob_wake_irq) { 3695 err = marvell_config_oob_wake(hdev); 3696 if (err) 3697 goto out_free_dev; 3698 } 3699 #endif 3700 if (id->driver_info & BTUSB_CW6622) 3701 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks); 3702 3703 if (id->driver_info & BTUSB_BCM2045) 3704 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks); 3705 3706 if (id->driver_info & BTUSB_BCM92035) 3707 hdev->setup = btusb_setup_bcm92035; 3708 3709 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) && 3710 (id->driver_info & BTUSB_BCM_PATCHRAM)) { 3711 hdev->manufacturer = 15; 3712 hdev->setup = btbcm_setup_patchram; 3713 hdev->set_diag = btusb_bcm_set_diag; 3714 hdev->set_bdaddr = btbcm_set_bdaddr; 3715 3716 /* Broadcom LM_DIAG Interface numbers are hardcoded */ 3717 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2); 3718 } 3719 3720 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) && 3721 (id->driver_info & BTUSB_BCM_APPLE)) { 3722 hdev->manufacturer = 15; 3723 hdev->setup = btbcm_setup_apple; 3724 hdev->set_diag = btusb_bcm_set_diag; 3725 3726 /* Broadcom LM_DIAG Interface numbers are hardcoded */ 3727 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2); 3728 } 3729 3730 /* Combined Intel Device setup to support multiple setup routine */ 3731 if (id->driver_info & BTUSB_INTEL_COMBINED) { 3732 err = btintel_configure_setup(hdev); 3733 if (err) 3734 goto out_free_dev; 3735 3736 /* Transport specific configuration */ 3737 hdev->send = btusb_send_frame_intel; 3738 hdev->cmd_timeout = btusb_intel_cmd_timeout; 3739 3740 if (id->driver_info & BTUSB_INTEL_BROKEN_INITIAL_NCMD) 3741 btintel_set_flag(hdev, INTEL_BROKEN_INITIAL_NCMD); 3742 3743 if (id->driver_info & BTUSB_INTEL_BROKEN_SHUTDOWN_LED) 3744 btintel_set_flag(hdev, INTEL_BROKEN_SHUTDOWN_LED); 3745 } 3746 3747 if (id->driver_info & BTUSB_MARVELL) 3748 hdev->set_bdaddr = btusb_set_bdaddr_marvell; 3749 3750 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_MTK) && 3751 (id->driver_info & BTUSB_MEDIATEK)) { 3752 hdev->setup = btusb_mtk_setup; 3753 hdev->shutdown = btusb_mtk_shutdown; 3754 hdev->manufacturer = 70; 3755 hdev->cmd_timeout = btusb_mtk_cmd_timeout; 3756 hdev->set_bdaddr = btmtk_set_bdaddr; 3757 set_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks); 3758 data->recv_acl = btusb_recv_acl_mtk; 3759 } 3760 3761 if (id->driver_info & BTUSB_SWAVE) { 3762 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks); 3763 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks); 3764 } 3765 3766 if (id->driver_info & BTUSB_INTEL_BOOT) { 3767 hdev->manufacturer = 2; 3768 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks); 3769 } 3770 3771 if (id->driver_info & BTUSB_ATH3012) { 3772 data->setup_on_usb = btusb_setup_qca; 3773 hdev->set_bdaddr = btusb_set_bdaddr_ath3012; 3774 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); 3775 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks); 3776 } 3777 3778 if (id->driver_info & BTUSB_QCA_ROME) { 3779 data->setup_on_usb = btusb_setup_qca; 3780 hdev->set_bdaddr = btusb_set_bdaddr_ath3012; 3781 hdev->cmd_timeout = btusb_qca_cmd_timeout; 3782 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); 3783 btusb_check_needs_reset_resume(intf); 3784 } 3785 3786 if (id->driver_info & BTUSB_QCA_WCN6855) { 3787 data->setup_on_usb = btusb_setup_qca; 3788 hdev->shutdown = btusb_shutdown_qca; 3789 hdev->set_bdaddr = btusb_set_bdaddr_wcn6855; 3790 hdev->cmd_timeout = btusb_qca_cmd_timeout; 3791 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); 3792 hci_set_msft_opcode(hdev, 0xFD70); 3793 } 3794 3795 if (id->driver_info & BTUSB_AMP) { 3796 /* AMP controllers do not support SCO packets */ 3797 data->isoc = NULL; 3798 } else { 3799 /* Interface orders are hardcoded in the specification */ 3800 data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1); 3801 data->isoc_ifnum = ifnum_base + 1; 3802 } 3803 3804 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_RTL) && 3805 (id->driver_info & BTUSB_REALTEK)) { 3806 hdev->setup = btrtl_setup_realtek; 3807 hdev->shutdown = btrtl_shutdown_realtek; 3808 hdev->cmd_timeout = btusb_rtl_cmd_timeout; 3809 3810 /* Realtek devices need to set remote wakeup on auto-suspend */ 3811 set_bit(BTUSB_WAKEUP_AUTOSUSPEND, &data->flags); 3812 set_bit(BTUSB_USE_ALT3_FOR_WBS, &data->flags); 3813 } 3814 3815 if (!reset) 3816 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); 3817 3818 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) { 3819 if (!disable_scofix) 3820 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks); 3821 } 3822 3823 if (id->driver_info & BTUSB_BROKEN_ISOC) 3824 data->isoc = NULL; 3825 3826 if (id->driver_info & BTUSB_WIDEBAND_SPEECH) 3827 set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED, &hdev->quirks); 3828 3829 if (id->driver_info & BTUSB_VALID_LE_STATES) 3830 set_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks); 3831 3832 if (id->driver_info & BTUSB_DIGIANSWER) { 3833 data->cmdreq_type = USB_TYPE_VENDOR; 3834 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); 3835 } 3836 3837 if (id->driver_info & BTUSB_CSR) { 3838 struct usb_device *udev = data->udev; 3839 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice); 3840 3841 /* Old firmware would otherwise execute USB reset */ 3842 if (bcdDevice < 0x117) 3843 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); 3844 3845 /* This must be set first in case we disable it for fakes */ 3846 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); 3847 3848 /* Fake CSR devices with broken commands */ 3849 if (le16_to_cpu(udev->descriptor.idVendor) == 0x0a12 && 3850 le16_to_cpu(udev->descriptor.idProduct) == 0x0001) 3851 hdev->setup = btusb_setup_csr; 3852 } 3853 3854 if (id->driver_info & BTUSB_SNIFFER) { 3855 struct usb_device *udev = data->udev; 3856 3857 /* New sniffer firmware has crippled HCI interface */ 3858 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997) 3859 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks); 3860 } 3861 3862 if (id->driver_info & BTUSB_INTEL_BOOT) { 3863 /* A bug in the bootloader causes that interrupt interface is 3864 * only enabled after receiving SetInterface(0, AltSetting=0). 3865 */ 3866 err = usb_set_interface(data->udev, 0, 0); 3867 if (err < 0) { 3868 BT_ERR("failed to set interface 0, alt 0 %d", err); 3869 goto out_free_dev; 3870 } 3871 } 3872 3873 if (data->isoc) { 3874 err = usb_driver_claim_interface(&btusb_driver, 3875 data->isoc, data); 3876 if (err < 0) 3877 goto out_free_dev; 3878 } 3879 3880 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) && data->diag) { 3881 if (!usb_driver_claim_interface(&btusb_driver, 3882 data->diag, data)) 3883 __set_diag_interface(hdev); 3884 else 3885 data->diag = NULL; 3886 } 3887 3888 if (enable_autosuspend) 3889 usb_enable_autosuspend(data->udev); 3890 3891 err = hci_register_dev(hdev); 3892 if (err < 0) 3893 goto out_free_dev; 3894 3895 usb_set_intfdata(intf, data); 3896 3897 debugfs_create_file("force_poll_sync", 0644, hdev->debugfs, data, 3898 &force_poll_sync_fops); 3899 3900 return 0; 3901 3902 out_free_dev: 3903 if (data->reset_gpio) 3904 gpiod_put(data->reset_gpio); 3905 hci_free_dev(hdev); 3906 return err; 3907 } 3908 3909 static void btusb_disconnect(struct usb_interface *intf) 3910 { 3911 struct btusb_data *data = usb_get_intfdata(intf); 3912 struct hci_dev *hdev; 3913 3914 BT_DBG("intf %p", intf); 3915 3916 if (!data) 3917 return; 3918 3919 hdev = data->hdev; 3920 usb_set_intfdata(data->intf, NULL); 3921 3922 if (data->isoc) 3923 usb_set_intfdata(data->isoc, NULL); 3924 3925 if (data->diag) 3926 usb_set_intfdata(data->diag, NULL); 3927 3928 hci_unregister_dev(hdev); 3929 3930 if (intf == data->intf) { 3931 if (data->isoc) 3932 usb_driver_release_interface(&btusb_driver, data->isoc); 3933 if (data->diag) 3934 usb_driver_release_interface(&btusb_driver, data->diag); 3935 } else if (intf == data->isoc) { 3936 if (data->diag) 3937 usb_driver_release_interface(&btusb_driver, data->diag); 3938 usb_driver_release_interface(&btusb_driver, data->intf); 3939 } else if (intf == data->diag) { 3940 usb_driver_release_interface(&btusb_driver, data->intf); 3941 if (data->isoc) 3942 usb_driver_release_interface(&btusb_driver, data->isoc); 3943 } 3944 3945 if (data->oob_wake_irq) 3946 device_init_wakeup(&data->udev->dev, false); 3947 3948 if (data->reset_gpio) 3949 gpiod_put(data->reset_gpio); 3950 3951 hci_free_dev(hdev); 3952 } 3953 3954 #ifdef CONFIG_PM 3955 static int btusb_suspend(struct usb_interface *intf, pm_message_t message) 3956 { 3957 struct btusb_data *data = usb_get_intfdata(intf); 3958 3959 BT_DBG("intf %p", intf); 3960 3961 if (data->suspend_count++) 3962 return 0; 3963 3964 spin_lock_irq(&data->txlock); 3965 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) { 3966 set_bit(BTUSB_SUSPENDING, &data->flags); 3967 spin_unlock_irq(&data->txlock); 3968 } else { 3969 spin_unlock_irq(&data->txlock); 3970 data->suspend_count--; 3971 return -EBUSY; 3972 } 3973 3974 cancel_work_sync(&data->work); 3975 3976 btusb_stop_traffic(data); 3977 usb_kill_anchored_urbs(&data->tx_anchor); 3978 3979 if (data->oob_wake_irq && device_may_wakeup(&data->udev->dev)) { 3980 set_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags); 3981 enable_irq_wake(data->oob_wake_irq); 3982 enable_irq(data->oob_wake_irq); 3983 } 3984 3985 /* For global suspend, Realtek devices lose the loaded fw 3986 * in them. But for autosuspend, firmware should remain. 3987 * Actually, it depends on whether the usb host sends 3988 * set feature (enable wakeup) or not. 3989 */ 3990 if (test_bit(BTUSB_WAKEUP_AUTOSUSPEND, &data->flags)) { 3991 if (PMSG_IS_AUTO(message) && 3992 device_can_wakeup(&data->udev->dev)) 3993 data->udev->do_remote_wakeup = 1; 3994 else if (!PMSG_IS_AUTO(message) && 3995 !device_may_wakeup(&data->udev->dev)) { 3996 data->udev->do_remote_wakeup = 0; 3997 data->udev->reset_resume = 1; 3998 } 3999 } 4000 4001 return 0; 4002 } 4003 4004 static void play_deferred(struct btusb_data *data) 4005 { 4006 struct urb *urb; 4007 int err; 4008 4009 while ((urb = usb_get_from_anchor(&data->deferred))) { 4010 usb_anchor_urb(urb, &data->tx_anchor); 4011 4012 err = usb_submit_urb(urb, GFP_ATOMIC); 4013 if (err < 0) { 4014 if (err != -EPERM && err != -ENODEV) 4015 BT_ERR("%s urb %p submission failed (%d)", 4016 data->hdev->name, urb, -err); 4017 kfree(urb->setup_packet); 4018 usb_unanchor_urb(urb); 4019 usb_free_urb(urb); 4020 break; 4021 } 4022 4023 data->tx_in_flight++; 4024 usb_free_urb(urb); 4025 } 4026 4027 /* Cleanup the rest deferred urbs. */ 4028 while ((urb = usb_get_from_anchor(&data->deferred))) { 4029 kfree(urb->setup_packet); 4030 usb_free_urb(urb); 4031 } 4032 } 4033 4034 static int btusb_resume(struct usb_interface *intf) 4035 { 4036 struct btusb_data *data = usb_get_intfdata(intf); 4037 struct hci_dev *hdev = data->hdev; 4038 int err = 0; 4039 4040 BT_DBG("intf %p", intf); 4041 4042 if (--data->suspend_count) 4043 return 0; 4044 4045 /* Disable only if not already disabled (keep it balanced) */ 4046 if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) { 4047 disable_irq(data->oob_wake_irq); 4048 disable_irq_wake(data->oob_wake_irq); 4049 } 4050 4051 if (!test_bit(HCI_RUNNING, &hdev->flags)) 4052 goto done; 4053 4054 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) { 4055 err = btusb_submit_intr_urb(hdev, GFP_NOIO); 4056 if (err < 0) { 4057 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 4058 goto failed; 4059 } 4060 } 4061 4062 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) { 4063 err = btusb_submit_bulk_urb(hdev, GFP_NOIO); 4064 if (err < 0) { 4065 clear_bit(BTUSB_BULK_RUNNING, &data->flags); 4066 goto failed; 4067 } 4068 4069 btusb_submit_bulk_urb(hdev, GFP_NOIO); 4070 } 4071 4072 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) { 4073 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0) 4074 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 4075 else 4076 btusb_submit_isoc_urb(hdev, GFP_NOIO); 4077 } 4078 4079 spin_lock_irq(&data->txlock); 4080 play_deferred(data); 4081 clear_bit(BTUSB_SUSPENDING, &data->flags); 4082 spin_unlock_irq(&data->txlock); 4083 schedule_work(&data->work); 4084 4085 return 0; 4086 4087 failed: 4088 usb_scuttle_anchored_urbs(&data->deferred); 4089 done: 4090 spin_lock_irq(&data->txlock); 4091 clear_bit(BTUSB_SUSPENDING, &data->flags); 4092 spin_unlock_irq(&data->txlock); 4093 4094 return err; 4095 } 4096 #endif 4097 4098 static struct usb_driver btusb_driver = { 4099 .name = "btusb", 4100 .probe = btusb_probe, 4101 .disconnect = btusb_disconnect, 4102 #ifdef CONFIG_PM 4103 .suspend = btusb_suspend, 4104 .resume = btusb_resume, 4105 #endif 4106 .id_table = btusb_table, 4107 .supports_autosuspend = 1, 4108 .disable_hub_initiated_lpm = 1, 4109 }; 4110 4111 module_usb_driver(btusb_driver); 4112 4113 module_param(disable_scofix, bool, 0644); 4114 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size"); 4115 4116 module_param(force_scofix, bool, 0644); 4117 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size"); 4118 4119 module_param(enable_autosuspend, bool, 0644); 4120 MODULE_PARM_DESC(enable_autosuspend, "Enable USB autosuspend by default"); 4121 4122 module_param(reset, bool, 0644); 4123 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization"); 4124 4125 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); 4126 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION); 4127 MODULE_VERSION(VERSION); 4128 MODULE_LICENSE("GPL"); 4129