1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * 4 * Generic Bluetooth USB driver 5 * 6 * Copyright (C) 2005-2008 Marcel Holtmann <marcel@holtmann.org> 7 */ 8 9 #include <linux/dmi.h> 10 #include <linux/module.h> 11 #include <linux/usb.h> 12 #include <linux/usb/quirks.h> 13 #include <linux/firmware.h> 14 #include <linux/iopoll.h> 15 #include <linux/of_device.h> 16 #include <linux/of_irq.h> 17 #include <linux/suspend.h> 18 #include <linux/gpio/consumer.h> 19 #include <asm/unaligned.h> 20 21 #include <net/bluetooth/bluetooth.h> 22 #include <net/bluetooth/hci_core.h> 23 24 #include "btintel.h" 25 #include "btbcm.h" 26 #include "btrtl.h" 27 28 #define VERSION "0.8" 29 30 static bool disable_scofix; 31 static bool force_scofix; 32 static bool enable_autosuspend = IS_ENABLED(CONFIG_BT_HCIBTUSB_AUTOSUSPEND); 33 34 static bool reset = true; 35 36 static struct usb_driver btusb_driver; 37 38 #define BTUSB_IGNORE 0x01 39 #define BTUSB_DIGIANSWER 0x02 40 #define BTUSB_CSR 0x04 41 #define BTUSB_SNIFFER 0x08 42 #define BTUSB_BCM92035 0x10 43 #define BTUSB_BROKEN_ISOC 0x20 44 #define BTUSB_WRONG_SCO_MTU 0x40 45 #define BTUSB_ATH3012 0x80 46 #define BTUSB_INTEL 0x100 47 #define BTUSB_INTEL_BOOT 0x200 48 #define BTUSB_BCM_PATCHRAM 0x400 49 #define BTUSB_MARVELL 0x800 50 #define BTUSB_SWAVE 0x1000 51 #define BTUSB_INTEL_NEW 0x2000 52 #define BTUSB_AMP 0x4000 53 #define BTUSB_QCA_ROME 0x8000 54 #define BTUSB_BCM_APPLE 0x10000 55 #define BTUSB_REALTEK 0x20000 56 #define BTUSB_BCM2045 0x40000 57 #define BTUSB_IFNUM_2 0x80000 58 #define BTUSB_CW6622 0x100000 59 #define BTUSB_MEDIATEK 0x200000 60 #define BTUSB_WIDEBAND_SPEECH 0x400000 61 62 static const struct usb_device_id btusb_table[] = { 63 /* Generic Bluetooth USB device */ 64 { USB_DEVICE_INFO(0xe0, 0x01, 0x01) }, 65 66 /* Generic Bluetooth AMP device */ 67 { USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP }, 68 69 /* Generic Bluetooth USB interface */ 70 { USB_INTERFACE_INFO(0xe0, 0x01, 0x01) }, 71 72 /* Apple-specific (Broadcom) devices */ 73 { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01), 74 .driver_info = BTUSB_BCM_APPLE | BTUSB_IFNUM_2 }, 75 76 /* MediaTek MT76x0E */ 77 { USB_DEVICE(0x0e8d, 0x763f) }, 78 79 /* Broadcom SoftSailing reporting vendor specific */ 80 { USB_DEVICE(0x0a5c, 0x21e1) }, 81 82 /* Apple MacBookPro 7,1 */ 83 { USB_DEVICE(0x05ac, 0x8213) }, 84 85 /* Apple iMac11,1 */ 86 { USB_DEVICE(0x05ac, 0x8215) }, 87 88 /* Apple MacBookPro6,2 */ 89 { USB_DEVICE(0x05ac, 0x8218) }, 90 91 /* Apple MacBookAir3,1, MacBookAir3,2 */ 92 { USB_DEVICE(0x05ac, 0x821b) }, 93 94 /* Apple MacBookAir4,1 */ 95 { USB_DEVICE(0x05ac, 0x821f) }, 96 97 /* Apple MacBookPro8,2 */ 98 { USB_DEVICE(0x05ac, 0x821a) }, 99 100 /* Apple MacMini5,1 */ 101 { USB_DEVICE(0x05ac, 0x8281) }, 102 103 /* AVM BlueFRITZ! USB v2.0 */ 104 { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE }, 105 106 /* Bluetooth Ultraport Module from IBM */ 107 { USB_DEVICE(0x04bf, 0x030a) }, 108 109 /* ALPS Modules with non-standard id */ 110 { USB_DEVICE(0x044e, 0x3001) }, 111 { USB_DEVICE(0x044e, 0x3002) }, 112 113 /* Ericsson with non-standard id */ 114 { USB_DEVICE(0x0bdb, 0x1002) }, 115 116 /* Canyon CN-BTU1 with HID interfaces */ 117 { USB_DEVICE(0x0c10, 0x0000) }, 118 119 /* Broadcom BCM20702A0 */ 120 { USB_DEVICE(0x413c, 0x8197) }, 121 122 /* Broadcom BCM20702B0 (Dynex/Insignia) */ 123 { USB_DEVICE(0x19ff, 0x0239), .driver_info = BTUSB_BCM_PATCHRAM }, 124 125 /* Broadcom BCM43142A0 (Foxconn/Lenovo) */ 126 { USB_VENDOR_AND_INTERFACE_INFO(0x105b, 0xff, 0x01, 0x01), 127 .driver_info = BTUSB_BCM_PATCHRAM }, 128 129 /* Broadcom BCM920703 (HTC Vive) */ 130 { USB_VENDOR_AND_INTERFACE_INFO(0x0bb4, 0xff, 0x01, 0x01), 131 .driver_info = BTUSB_BCM_PATCHRAM }, 132 133 /* Foxconn - Hon Hai */ 134 { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01), 135 .driver_info = BTUSB_BCM_PATCHRAM }, 136 137 /* Lite-On Technology - Broadcom based */ 138 { USB_VENDOR_AND_INTERFACE_INFO(0x04ca, 0xff, 0x01, 0x01), 139 .driver_info = BTUSB_BCM_PATCHRAM }, 140 141 /* Broadcom devices with vendor specific id */ 142 { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01), 143 .driver_info = BTUSB_BCM_PATCHRAM }, 144 145 /* ASUSTek Computer - Broadcom based */ 146 { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01), 147 .driver_info = BTUSB_BCM_PATCHRAM }, 148 149 /* Belkin F8065bf - Broadcom based */ 150 { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01), 151 .driver_info = BTUSB_BCM_PATCHRAM }, 152 153 /* IMC Networks - Broadcom based */ 154 { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01), 155 .driver_info = BTUSB_BCM_PATCHRAM }, 156 157 /* Dell Computer - Broadcom based */ 158 { USB_VENDOR_AND_INTERFACE_INFO(0x413c, 0xff, 0x01, 0x01), 159 .driver_info = BTUSB_BCM_PATCHRAM }, 160 161 /* Toshiba Corp - Broadcom based */ 162 { USB_VENDOR_AND_INTERFACE_INFO(0x0930, 0xff, 0x01, 0x01), 163 .driver_info = BTUSB_BCM_PATCHRAM }, 164 165 /* Intel Bluetooth USB Bootloader (RAM module) */ 166 { USB_DEVICE(0x8087, 0x0a5a), 167 .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC }, 168 169 { } /* Terminating entry */ 170 }; 171 172 MODULE_DEVICE_TABLE(usb, btusb_table); 173 174 static const struct usb_device_id blacklist_table[] = { 175 /* CSR BlueCore devices */ 176 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR }, 177 178 /* Broadcom BCM2033 without firmware */ 179 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE }, 180 181 /* Broadcom BCM2045 devices */ 182 { USB_DEVICE(0x0a5c, 0x2045), .driver_info = BTUSB_BCM2045 }, 183 184 /* Atheros 3011 with sflash firmware */ 185 { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE }, 186 { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE }, 187 { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE }, 188 { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE }, 189 { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE }, 190 { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE }, 191 { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE }, 192 193 /* Atheros AR9285 Malbec with sflash firmware */ 194 { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE }, 195 196 /* Atheros 3012 with sflash firmware */ 197 { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 }, 198 { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 }, 199 { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 }, 200 { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 }, 201 { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 }, 202 { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 }, 203 { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 }, 204 { USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 }, 205 { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 }, 206 { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 }, 207 { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 }, 208 { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 }, 209 { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 }, 210 { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 }, 211 { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 }, 212 { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 }, 213 { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 }, 214 { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 }, 215 { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 }, 216 { USB_DEVICE(0x04ca, 0x3018), .driver_info = BTUSB_ATH3012 }, 217 { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 }, 218 { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 }, 219 { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 }, 220 { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 }, 221 { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 }, 222 { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 }, 223 { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 }, 224 { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 }, 225 { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 }, 226 { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 }, 227 { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 }, 228 { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 }, 229 { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 }, 230 { USB_DEVICE(0x0cf3, 0x817b), .driver_info = BTUSB_ATH3012 }, 231 { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 }, 232 { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 }, 233 { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 }, 234 { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 }, 235 { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 }, 236 { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 }, 237 { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 }, 238 { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 }, 239 { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 }, 240 { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 }, 241 { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 }, 242 { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 }, 243 { USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 }, 244 { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 }, 245 { USB_DEVICE(0x13d3, 0x3487), .driver_info = BTUSB_ATH3012 }, 246 { USB_DEVICE(0x13d3, 0x3490), .driver_info = BTUSB_ATH3012 }, 247 248 /* Atheros AR5BBU12 with sflash firmware */ 249 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE }, 250 251 /* Atheros AR5BBU12 with sflash firmware */ 252 { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 }, 253 { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 }, 254 255 /* QCA ROME chipset */ 256 { USB_DEVICE(0x0cf3, 0x535b), .driver_info = BTUSB_QCA_ROME }, 257 { USB_DEVICE(0x0cf3, 0xe007), .driver_info = BTUSB_QCA_ROME }, 258 { USB_DEVICE(0x0cf3, 0xe009), .driver_info = BTUSB_QCA_ROME }, 259 { USB_DEVICE(0x0cf3, 0xe010), .driver_info = BTUSB_QCA_ROME }, 260 { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME }, 261 { USB_DEVICE(0x0cf3, 0xe301), .driver_info = BTUSB_QCA_ROME }, 262 { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME }, 263 { USB_DEVICE(0x0489, 0xe092), .driver_info = BTUSB_QCA_ROME }, 264 { USB_DEVICE(0x0489, 0xe09f), .driver_info = BTUSB_QCA_ROME }, 265 { USB_DEVICE(0x0489, 0xe0a2), .driver_info = BTUSB_QCA_ROME }, 266 { USB_DEVICE(0x04ca, 0x3011), .driver_info = BTUSB_QCA_ROME }, 267 { USB_DEVICE(0x04ca, 0x3015), .driver_info = BTUSB_QCA_ROME }, 268 { USB_DEVICE(0x04ca, 0x3016), .driver_info = BTUSB_QCA_ROME }, 269 { USB_DEVICE(0x04ca, 0x301a), .driver_info = BTUSB_QCA_ROME }, 270 { USB_DEVICE(0x04ca, 0x3021), .driver_info = BTUSB_QCA_ROME }, 271 { USB_DEVICE(0x13d3, 0x3491), .driver_info = BTUSB_QCA_ROME }, 272 { USB_DEVICE(0x13d3, 0x3496), .driver_info = BTUSB_QCA_ROME }, 273 { USB_DEVICE(0x13d3, 0x3501), .driver_info = BTUSB_QCA_ROME }, 274 275 /* Broadcom BCM2035 */ 276 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 }, 277 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU }, 278 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU }, 279 280 /* Broadcom BCM2045 */ 281 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU }, 282 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU }, 283 284 /* IBM/Lenovo ThinkPad with Broadcom chip */ 285 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU }, 286 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU }, 287 288 /* HP laptop with Broadcom chip */ 289 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU }, 290 291 /* Dell laptop with Broadcom chip */ 292 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU }, 293 294 /* Dell Wireless 370 and 410 devices */ 295 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU }, 296 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU }, 297 298 /* Belkin F8T012 and F8T013 devices */ 299 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU }, 300 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU }, 301 302 /* Asus WL-BTD202 device */ 303 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU }, 304 305 /* Kensington Bluetooth USB adapter */ 306 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU }, 307 308 /* RTX Telecom based adapters with buggy SCO support */ 309 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC }, 310 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC }, 311 312 /* CONWISE Technology based adapters with buggy SCO support */ 313 { USB_DEVICE(0x0e5e, 0x6622), 314 .driver_info = BTUSB_BROKEN_ISOC | BTUSB_CW6622}, 315 316 /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */ 317 { USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE }, 318 319 /* Digianswer devices */ 320 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER }, 321 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE }, 322 323 /* CSR BlueCore Bluetooth Sniffer */ 324 { USB_DEVICE(0x0a12, 0x0002), 325 .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC }, 326 327 /* Frontline ComProbe Bluetooth Sniffer */ 328 { USB_DEVICE(0x16d3, 0x0002), 329 .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC }, 330 331 /* Marvell Bluetooth devices */ 332 { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL }, 333 { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL }, 334 { USB_DEVICE(0x1286, 0x204e), .driver_info = BTUSB_MARVELL }, 335 336 /* Intel Bluetooth devices */ 337 { USB_DEVICE(0x8087, 0x0025), .driver_info = BTUSB_INTEL_NEW | 338 BTUSB_WIDEBAND_SPEECH }, 339 { USB_DEVICE(0x8087, 0x0026), .driver_info = BTUSB_INTEL_NEW | 340 BTUSB_WIDEBAND_SPEECH }, 341 { USB_DEVICE(0x8087, 0x0029), .driver_info = BTUSB_INTEL_NEW | 342 BTUSB_WIDEBAND_SPEECH }, 343 { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR }, 344 { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL }, 345 { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL }, 346 { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_NEW | 347 BTUSB_WIDEBAND_SPEECH }, 348 { USB_DEVICE(0x8087, 0x0aa7), .driver_info = BTUSB_INTEL | 349 BTUSB_WIDEBAND_SPEECH }, 350 { USB_DEVICE(0x8087, 0x0aaa), .driver_info = BTUSB_INTEL_NEW | 351 BTUSB_WIDEBAND_SPEECH }, 352 353 /* Other Intel Bluetooth devices */ 354 { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01), 355 .driver_info = BTUSB_IGNORE }, 356 357 /* Realtek Bluetooth devices */ 358 { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01), 359 .driver_info = BTUSB_REALTEK }, 360 361 /* MediaTek Bluetooth devices */ 362 { USB_VENDOR_AND_INTERFACE_INFO(0x0e8d, 0xe0, 0x01, 0x01), 363 .driver_info = BTUSB_MEDIATEK }, 364 365 /* Additional Realtek 8723AE Bluetooth devices */ 366 { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK }, 367 { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK }, 368 369 /* Additional Realtek 8723BE Bluetooth devices */ 370 { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK }, 371 { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK }, 372 { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK }, 373 { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK }, 374 { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK }, 375 { USB_DEVICE(0x13d3, 0x3494), .driver_info = BTUSB_REALTEK }, 376 377 /* Additional Realtek 8723BU Bluetooth devices */ 378 { USB_DEVICE(0x7392, 0xa611), .driver_info = BTUSB_REALTEK }, 379 380 /* Additional Realtek 8723DE Bluetooth devices */ 381 { USB_DEVICE(0x0bda, 0xb009), .driver_info = BTUSB_REALTEK }, 382 { USB_DEVICE(0x2ff8, 0xb011), .driver_info = BTUSB_REALTEK }, 383 384 /* Additional Realtek 8821AE Bluetooth devices */ 385 { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK }, 386 { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK }, 387 { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK }, 388 { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK }, 389 { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK }, 390 391 /* Additional Realtek 8822BE Bluetooth devices */ 392 { USB_DEVICE(0x13d3, 0x3526), .driver_info = BTUSB_REALTEK }, 393 { USB_DEVICE(0x0b05, 0x185c), .driver_info = BTUSB_REALTEK }, 394 395 /* Additional Realtek 8822CE Bluetooth devices */ 396 { USB_DEVICE(0x04ca, 0x4005), .driver_info = BTUSB_REALTEK }, 397 { USB_DEVICE(0x13d3, 0x3548), .driver_info = BTUSB_REALTEK }, 398 399 /* Silicon Wave based devices */ 400 { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE }, 401 402 { } /* Terminating entry */ 403 }; 404 405 /* The Bluetooth USB module build into some devices needs to be reset on resume, 406 * this is a problem with the platform (likely shutting off all power) not with 407 * the module itself. So we use a DMI list to match known broken platforms. 408 */ 409 static const struct dmi_system_id btusb_needs_reset_resume_table[] = { 410 { 411 /* Dell OptiPlex 3060 (QCA ROME device 0cf3:e007) */ 412 .matches = { 413 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 414 DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 3060"), 415 }, 416 }, 417 { 418 /* Dell XPS 9360 (QCA ROME device 0cf3:e300) */ 419 .matches = { 420 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 421 DMI_MATCH(DMI_PRODUCT_NAME, "XPS 13 9360"), 422 }, 423 }, 424 { 425 /* Dell Inspiron 5565 (QCA ROME device 0cf3:e009) */ 426 .matches = { 427 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 428 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5565"), 429 }, 430 }, 431 {} 432 }; 433 434 #define BTUSB_MAX_ISOC_FRAMES 10 435 436 #define BTUSB_INTR_RUNNING 0 437 #define BTUSB_BULK_RUNNING 1 438 #define BTUSB_ISOC_RUNNING 2 439 #define BTUSB_SUSPENDING 3 440 #define BTUSB_DID_ISO_RESUME 4 441 #define BTUSB_BOOTLOADER 5 442 #define BTUSB_DOWNLOADING 6 443 #define BTUSB_FIRMWARE_LOADED 7 444 #define BTUSB_FIRMWARE_FAILED 8 445 #define BTUSB_BOOTING 9 446 #define BTUSB_DIAG_RUNNING 10 447 #define BTUSB_OOB_WAKE_ENABLED 11 448 #define BTUSB_HW_RESET_ACTIVE 12 449 #define BTUSB_TX_WAIT_VND_EVT 13 450 #define BTUSB_WAKEUP_DISABLE 14 451 452 struct btusb_data { 453 struct hci_dev *hdev; 454 struct usb_device *udev; 455 struct usb_interface *intf; 456 struct usb_interface *isoc; 457 struct usb_interface *diag; 458 unsigned isoc_ifnum; 459 460 unsigned long flags; 461 462 struct work_struct work; 463 struct work_struct waker; 464 465 struct usb_anchor deferred; 466 struct usb_anchor tx_anchor; 467 int tx_in_flight; 468 spinlock_t txlock; 469 470 struct usb_anchor intr_anchor; 471 struct usb_anchor bulk_anchor; 472 struct usb_anchor isoc_anchor; 473 struct usb_anchor diag_anchor; 474 struct usb_anchor ctrl_anchor; 475 spinlock_t rxlock; 476 477 struct sk_buff *evt_skb; 478 struct sk_buff *acl_skb; 479 struct sk_buff *sco_skb; 480 481 struct usb_endpoint_descriptor *intr_ep; 482 struct usb_endpoint_descriptor *bulk_tx_ep; 483 struct usb_endpoint_descriptor *bulk_rx_ep; 484 struct usb_endpoint_descriptor *isoc_tx_ep; 485 struct usb_endpoint_descriptor *isoc_rx_ep; 486 struct usb_endpoint_descriptor *diag_tx_ep; 487 struct usb_endpoint_descriptor *diag_rx_ep; 488 489 struct gpio_desc *reset_gpio; 490 491 __u8 cmdreq_type; 492 __u8 cmdreq; 493 494 unsigned int sco_num; 495 int isoc_altsetting; 496 int suspend_count; 497 498 int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb); 499 int (*recv_bulk)(struct btusb_data *data, void *buffer, int count); 500 501 int (*setup_on_usb)(struct hci_dev *hdev); 502 503 int oob_wake_irq; /* irq for out-of-band wake-on-bt */ 504 unsigned cmd_timeout_cnt; 505 }; 506 507 508 static void btusb_intel_cmd_timeout(struct hci_dev *hdev) 509 { 510 struct btusb_data *data = hci_get_drvdata(hdev); 511 struct gpio_desc *reset_gpio = data->reset_gpio; 512 513 if (++data->cmd_timeout_cnt < 5) 514 return; 515 516 if (!reset_gpio) { 517 bt_dev_err(hdev, "No way to reset. Ignoring and continuing"); 518 return; 519 } 520 521 /* 522 * Toggle the hard reset line if the platform provides one. The reset 523 * is going to yank the device off the USB and then replug. So doing 524 * once is enough. The cleanup is handled correctly on the way out 525 * (standard USB disconnect), and the new device is detected cleanly 526 * and bound to the driver again like it should be. 527 */ 528 if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) { 529 bt_dev_err(hdev, "last reset failed? Not resetting again"); 530 return; 531 } 532 533 bt_dev_err(hdev, "Initiating HW reset via gpio"); 534 gpiod_set_value_cansleep(reset_gpio, 1); 535 msleep(100); 536 gpiod_set_value_cansleep(reset_gpio, 0); 537 } 538 539 static void btusb_rtl_cmd_timeout(struct hci_dev *hdev) 540 { 541 struct btusb_data *data = hci_get_drvdata(hdev); 542 struct gpio_desc *reset_gpio = data->reset_gpio; 543 544 if (++data->cmd_timeout_cnt < 5) 545 return; 546 547 if (!reset_gpio) { 548 bt_dev_err(hdev, "No gpio to reset Realtek device, ignoring"); 549 return; 550 } 551 552 /* Toggle the hard reset line. The Realtek device is going to 553 * yank itself off the USB and then replug. The cleanup is handled 554 * correctly on the way out (standard USB disconnect), and the new 555 * device is detected cleanly and bound to the driver again like 556 * it should be. 557 */ 558 if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) { 559 bt_dev_err(hdev, "last reset failed? Not resetting again"); 560 return; 561 } 562 563 bt_dev_err(hdev, "Reset Realtek device via gpio"); 564 gpiod_set_value_cansleep(reset_gpio, 1); 565 msleep(200); 566 gpiod_set_value_cansleep(reset_gpio, 0); 567 } 568 569 static inline void btusb_free_frags(struct btusb_data *data) 570 { 571 unsigned long flags; 572 573 spin_lock_irqsave(&data->rxlock, flags); 574 575 kfree_skb(data->evt_skb); 576 data->evt_skb = NULL; 577 578 kfree_skb(data->acl_skb); 579 data->acl_skb = NULL; 580 581 kfree_skb(data->sco_skb); 582 data->sco_skb = NULL; 583 584 spin_unlock_irqrestore(&data->rxlock, flags); 585 } 586 587 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count) 588 { 589 struct sk_buff *skb; 590 unsigned long flags; 591 int err = 0; 592 593 spin_lock_irqsave(&data->rxlock, flags); 594 skb = data->evt_skb; 595 596 while (count) { 597 int len; 598 599 if (!skb) { 600 skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC); 601 if (!skb) { 602 err = -ENOMEM; 603 break; 604 } 605 606 hci_skb_pkt_type(skb) = HCI_EVENT_PKT; 607 hci_skb_expect(skb) = HCI_EVENT_HDR_SIZE; 608 } 609 610 len = min_t(uint, hci_skb_expect(skb), count); 611 skb_put_data(skb, buffer, len); 612 613 count -= len; 614 buffer += len; 615 hci_skb_expect(skb) -= len; 616 617 if (skb->len == HCI_EVENT_HDR_SIZE) { 618 /* Complete event header */ 619 hci_skb_expect(skb) = hci_event_hdr(skb)->plen; 620 621 if (skb_tailroom(skb) < hci_skb_expect(skb)) { 622 kfree_skb(skb); 623 skb = NULL; 624 625 err = -EILSEQ; 626 break; 627 } 628 } 629 630 if (!hci_skb_expect(skb)) { 631 /* Complete frame */ 632 data->recv_event(data->hdev, skb); 633 skb = NULL; 634 } 635 } 636 637 data->evt_skb = skb; 638 spin_unlock_irqrestore(&data->rxlock, flags); 639 640 return err; 641 } 642 643 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count) 644 { 645 struct sk_buff *skb; 646 unsigned long flags; 647 int err = 0; 648 649 spin_lock_irqsave(&data->rxlock, flags); 650 skb = data->acl_skb; 651 652 while (count) { 653 int len; 654 655 if (!skb) { 656 skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC); 657 if (!skb) { 658 err = -ENOMEM; 659 break; 660 } 661 662 hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT; 663 hci_skb_expect(skb) = HCI_ACL_HDR_SIZE; 664 } 665 666 len = min_t(uint, hci_skb_expect(skb), count); 667 skb_put_data(skb, buffer, len); 668 669 count -= len; 670 buffer += len; 671 hci_skb_expect(skb) -= len; 672 673 if (skb->len == HCI_ACL_HDR_SIZE) { 674 __le16 dlen = hci_acl_hdr(skb)->dlen; 675 676 /* Complete ACL header */ 677 hci_skb_expect(skb) = __le16_to_cpu(dlen); 678 679 if (skb_tailroom(skb) < hci_skb_expect(skb)) { 680 kfree_skb(skb); 681 skb = NULL; 682 683 err = -EILSEQ; 684 break; 685 } 686 } 687 688 if (!hci_skb_expect(skb)) { 689 /* Complete frame */ 690 hci_recv_frame(data->hdev, skb); 691 skb = NULL; 692 } 693 } 694 695 data->acl_skb = skb; 696 spin_unlock_irqrestore(&data->rxlock, flags); 697 698 return err; 699 } 700 701 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count) 702 { 703 struct sk_buff *skb; 704 unsigned long flags; 705 int err = 0; 706 707 spin_lock_irqsave(&data->rxlock, flags); 708 skb = data->sco_skb; 709 710 while (count) { 711 int len; 712 713 if (!skb) { 714 skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC); 715 if (!skb) { 716 err = -ENOMEM; 717 break; 718 } 719 720 hci_skb_pkt_type(skb) = HCI_SCODATA_PKT; 721 hci_skb_expect(skb) = HCI_SCO_HDR_SIZE; 722 } 723 724 len = min_t(uint, hci_skb_expect(skb), count); 725 skb_put_data(skb, buffer, len); 726 727 count -= len; 728 buffer += len; 729 hci_skb_expect(skb) -= len; 730 731 if (skb->len == HCI_SCO_HDR_SIZE) { 732 /* Complete SCO header */ 733 hci_skb_expect(skb) = hci_sco_hdr(skb)->dlen; 734 735 if (skb_tailroom(skb) < hci_skb_expect(skb)) { 736 kfree_skb(skb); 737 skb = NULL; 738 739 err = -EILSEQ; 740 break; 741 } 742 } 743 744 if (!hci_skb_expect(skb)) { 745 /* Complete frame */ 746 hci_recv_frame(data->hdev, skb); 747 skb = NULL; 748 } 749 } 750 751 data->sco_skb = skb; 752 spin_unlock_irqrestore(&data->rxlock, flags); 753 754 return err; 755 } 756 757 static void btusb_intr_complete(struct urb *urb) 758 { 759 struct hci_dev *hdev = urb->context; 760 struct btusb_data *data = hci_get_drvdata(hdev); 761 int err; 762 763 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, 764 urb->actual_length); 765 766 if (!test_bit(HCI_RUNNING, &hdev->flags)) 767 return; 768 769 if (urb->status == 0) { 770 hdev->stat.byte_rx += urb->actual_length; 771 772 if (btusb_recv_intr(data, urb->transfer_buffer, 773 urb->actual_length) < 0) { 774 bt_dev_err(hdev, "corrupted event packet"); 775 hdev->stat.err_rx++; 776 } 777 } else if (urb->status == -ENOENT) { 778 /* Avoid suspend failed when usb_kill_urb */ 779 return; 780 } 781 782 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags)) 783 return; 784 785 usb_mark_last_busy(data->udev); 786 usb_anchor_urb(urb, &data->intr_anchor); 787 788 err = usb_submit_urb(urb, GFP_ATOMIC); 789 if (err < 0) { 790 /* -EPERM: urb is being killed; 791 * -ENODEV: device got disconnected 792 */ 793 if (err != -EPERM && err != -ENODEV) 794 bt_dev_err(hdev, "urb %p failed to resubmit (%d)", 795 urb, -err); 796 usb_unanchor_urb(urb); 797 } 798 } 799 800 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags) 801 { 802 struct btusb_data *data = hci_get_drvdata(hdev); 803 struct urb *urb; 804 unsigned char *buf; 805 unsigned int pipe; 806 int err, size; 807 808 BT_DBG("%s", hdev->name); 809 810 if (!data->intr_ep) 811 return -ENODEV; 812 813 urb = usb_alloc_urb(0, mem_flags); 814 if (!urb) 815 return -ENOMEM; 816 817 size = le16_to_cpu(data->intr_ep->wMaxPacketSize); 818 819 buf = kmalloc(size, mem_flags); 820 if (!buf) { 821 usb_free_urb(urb); 822 return -ENOMEM; 823 } 824 825 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress); 826 827 usb_fill_int_urb(urb, data->udev, pipe, buf, size, 828 btusb_intr_complete, hdev, data->intr_ep->bInterval); 829 830 urb->transfer_flags |= URB_FREE_BUFFER; 831 832 usb_anchor_urb(urb, &data->intr_anchor); 833 834 err = usb_submit_urb(urb, mem_flags); 835 if (err < 0) { 836 if (err != -EPERM && err != -ENODEV) 837 bt_dev_err(hdev, "urb %p submission failed (%d)", 838 urb, -err); 839 usb_unanchor_urb(urb); 840 } 841 842 usb_free_urb(urb); 843 844 return err; 845 } 846 847 static void btusb_bulk_complete(struct urb *urb) 848 { 849 struct hci_dev *hdev = urb->context; 850 struct btusb_data *data = hci_get_drvdata(hdev); 851 int err; 852 853 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, 854 urb->actual_length); 855 856 if (!test_bit(HCI_RUNNING, &hdev->flags)) 857 return; 858 859 if (urb->status == 0) { 860 hdev->stat.byte_rx += urb->actual_length; 861 862 if (data->recv_bulk(data, urb->transfer_buffer, 863 urb->actual_length) < 0) { 864 bt_dev_err(hdev, "corrupted ACL packet"); 865 hdev->stat.err_rx++; 866 } 867 } else if (urb->status == -ENOENT) { 868 /* Avoid suspend failed when usb_kill_urb */ 869 return; 870 } 871 872 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags)) 873 return; 874 875 usb_anchor_urb(urb, &data->bulk_anchor); 876 usb_mark_last_busy(data->udev); 877 878 err = usb_submit_urb(urb, GFP_ATOMIC); 879 if (err < 0) { 880 /* -EPERM: urb is being killed; 881 * -ENODEV: device got disconnected 882 */ 883 if (err != -EPERM && err != -ENODEV) 884 bt_dev_err(hdev, "urb %p failed to resubmit (%d)", 885 urb, -err); 886 usb_unanchor_urb(urb); 887 } 888 } 889 890 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags) 891 { 892 struct btusb_data *data = hci_get_drvdata(hdev); 893 struct urb *urb; 894 unsigned char *buf; 895 unsigned int pipe; 896 int err, size = HCI_MAX_FRAME_SIZE; 897 898 BT_DBG("%s", hdev->name); 899 900 if (!data->bulk_rx_ep) 901 return -ENODEV; 902 903 urb = usb_alloc_urb(0, mem_flags); 904 if (!urb) 905 return -ENOMEM; 906 907 buf = kmalloc(size, mem_flags); 908 if (!buf) { 909 usb_free_urb(urb); 910 return -ENOMEM; 911 } 912 913 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress); 914 915 usb_fill_bulk_urb(urb, data->udev, pipe, buf, size, 916 btusb_bulk_complete, hdev); 917 918 urb->transfer_flags |= URB_FREE_BUFFER; 919 920 usb_mark_last_busy(data->udev); 921 usb_anchor_urb(urb, &data->bulk_anchor); 922 923 err = usb_submit_urb(urb, mem_flags); 924 if (err < 0) { 925 if (err != -EPERM && err != -ENODEV) 926 bt_dev_err(hdev, "urb %p submission failed (%d)", 927 urb, -err); 928 usb_unanchor_urb(urb); 929 } 930 931 usb_free_urb(urb); 932 933 return err; 934 } 935 936 static void btusb_isoc_complete(struct urb *urb) 937 { 938 struct hci_dev *hdev = urb->context; 939 struct btusb_data *data = hci_get_drvdata(hdev); 940 int i, err; 941 942 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, 943 urb->actual_length); 944 945 if (!test_bit(HCI_RUNNING, &hdev->flags)) 946 return; 947 948 if (urb->status == 0) { 949 for (i = 0; i < urb->number_of_packets; i++) { 950 unsigned int offset = urb->iso_frame_desc[i].offset; 951 unsigned int length = urb->iso_frame_desc[i].actual_length; 952 953 if (urb->iso_frame_desc[i].status) 954 continue; 955 956 hdev->stat.byte_rx += length; 957 958 if (btusb_recv_isoc(data, urb->transfer_buffer + offset, 959 length) < 0) { 960 bt_dev_err(hdev, "corrupted SCO packet"); 961 hdev->stat.err_rx++; 962 } 963 } 964 } else if (urb->status == -ENOENT) { 965 /* Avoid suspend failed when usb_kill_urb */ 966 return; 967 } 968 969 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags)) 970 return; 971 972 usb_anchor_urb(urb, &data->isoc_anchor); 973 974 err = usb_submit_urb(urb, GFP_ATOMIC); 975 if (err < 0) { 976 /* -EPERM: urb is being killed; 977 * -ENODEV: device got disconnected 978 */ 979 if (err != -EPERM && err != -ENODEV) 980 bt_dev_err(hdev, "urb %p failed to resubmit (%d)", 981 urb, -err); 982 usb_unanchor_urb(urb); 983 } 984 } 985 986 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu) 987 { 988 int i, offset = 0; 989 990 BT_DBG("len %d mtu %d", len, mtu); 991 992 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu; 993 i++, offset += mtu, len -= mtu) { 994 urb->iso_frame_desc[i].offset = offset; 995 urb->iso_frame_desc[i].length = mtu; 996 } 997 998 if (len && i < BTUSB_MAX_ISOC_FRAMES) { 999 urb->iso_frame_desc[i].offset = offset; 1000 urb->iso_frame_desc[i].length = len; 1001 i++; 1002 } 1003 1004 urb->number_of_packets = i; 1005 } 1006 1007 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags) 1008 { 1009 struct btusb_data *data = hci_get_drvdata(hdev); 1010 struct urb *urb; 1011 unsigned char *buf; 1012 unsigned int pipe; 1013 int err, size; 1014 1015 BT_DBG("%s", hdev->name); 1016 1017 if (!data->isoc_rx_ep) 1018 return -ENODEV; 1019 1020 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags); 1021 if (!urb) 1022 return -ENOMEM; 1023 1024 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) * 1025 BTUSB_MAX_ISOC_FRAMES; 1026 1027 buf = kmalloc(size, mem_flags); 1028 if (!buf) { 1029 usb_free_urb(urb); 1030 return -ENOMEM; 1031 } 1032 1033 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress); 1034 1035 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete, 1036 hdev, data->isoc_rx_ep->bInterval); 1037 1038 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP; 1039 1040 __fill_isoc_descriptor(urb, size, 1041 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize)); 1042 1043 usb_anchor_urb(urb, &data->isoc_anchor); 1044 1045 err = usb_submit_urb(urb, mem_flags); 1046 if (err < 0) { 1047 if (err != -EPERM && err != -ENODEV) 1048 bt_dev_err(hdev, "urb %p submission failed (%d)", 1049 urb, -err); 1050 usb_unanchor_urb(urb); 1051 } 1052 1053 usb_free_urb(urb); 1054 1055 return err; 1056 } 1057 1058 static void btusb_diag_complete(struct urb *urb) 1059 { 1060 struct hci_dev *hdev = urb->context; 1061 struct btusb_data *data = hci_get_drvdata(hdev); 1062 int err; 1063 1064 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, 1065 urb->actual_length); 1066 1067 if (urb->status == 0) { 1068 struct sk_buff *skb; 1069 1070 skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC); 1071 if (skb) { 1072 skb_put_data(skb, urb->transfer_buffer, 1073 urb->actual_length); 1074 hci_recv_diag(hdev, skb); 1075 } 1076 } else if (urb->status == -ENOENT) { 1077 /* Avoid suspend failed when usb_kill_urb */ 1078 return; 1079 } 1080 1081 if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags)) 1082 return; 1083 1084 usb_anchor_urb(urb, &data->diag_anchor); 1085 usb_mark_last_busy(data->udev); 1086 1087 err = usb_submit_urb(urb, GFP_ATOMIC); 1088 if (err < 0) { 1089 /* -EPERM: urb is being killed; 1090 * -ENODEV: device got disconnected 1091 */ 1092 if (err != -EPERM && err != -ENODEV) 1093 bt_dev_err(hdev, "urb %p failed to resubmit (%d)", 1094 urb, -err); 1095 usb_unanchor_urb(urb); 1096 } 1097 } 1098 1099 static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags) 1100 { 1101 struct btusb_data *data = hci_get_drvdata(hdev); 1102 struct urb *urb; 1103 unsigned char *buf; 1104 unsigned int pipe; 1105 int err, size = HCI_MAX_FRAME_SIZE; 1106 1107 BT_DBG("%s", hdev->name); 1108 1109 if (!data->diag_rx_ep) 1110 return -ENODEV; 1111 1112 urb = usb_alloc_urb(0, mem_flags); 1113 if (!urb) 1114 return -ENOMEM; 1115 1116 buf = kmalloc(size, mem_flags); 1117 if (!buf) { 1118 usb_free_urb(urb); 1119 return -ENOMEM; 1120 } 1121 1122 pipe = usb_rcvbulkpipe(data->udev, data->diag_rx_ep->bEndpointAddress); 1123 1124 usb_fill_bulk_urb(urb, data->udev, pipe, buf, size, 1125 btusb_diag_complete, hdev); 1126 1127 urb->transfer_flags |= URB_FREE_BUFFER; 1128 1129 usb_mark_last_busy(data->udev); 1130 usb_anchor_urb(urb, &data->diag_anchor); 1131 1132 err = usb_submit_urb(urb, mem_flags); 1133 if (err < 0) { 1134 if (err != -EPERM && err != -ENODEV) 1135 bt_dev_err(hdev, "urb %p submission failed (%d)", 1136 urb, -err); 1137 usb_unanchor_urb(urb); 1138 } 1139 1140 usb_free_urb(urb); 1141 1142 return err; 1143 } 1144 1145 static void btusb_tx_complete(struct urb *urb) 1146 { 1147 struct sk_buff *skb = urb->context; 1148 struct hci_dev *hdev = (struct hci_dev *)skb->dev; 1149 struct btusb_data *data = hci_get_drvdata(hdev); 1150 unsigned long flags; 1151 1152 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, 1153 urb->actual_length); 1154 1155 if (!test_bit(HCI_RUNNING, &hdev->flags)) 1156 goto done; 1157 1158 if (!urb->status) 1159 hdev->stat.byte_tx += urb->transfer_buffer_length; 1160 else 1161 hdev->stat.err_tx++; 1162 1163 done: 1164 spin_lock_irqsave(&data->txlock, flags); 1165 data->tx_in_flight--; 1166 spin_unlock_irqrestore(&data->txlock, flags); 1167 1168 kfree(urb->setup_packet); 1169 1170 kfree_skb(skb); 1171 } 1172 1173 static void btusb_isoc_tx_complete(struct urb *urb) 1174 { 1175 struct sk_buff *skb = urb->context; 1176 struct hci_dev *hdev = (struct hci_dev *)skb->dev; 1177 1178 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, 1179 urb->actual_length); 1180 1181 if (!test_bit(HCI_RUNNING, &hdev->flags)) 1182 goto done; 1183 1184 if (!urb->status) 1185 hdev->stat.byte_tx += urb->transfer_buffer_length; 1186 else 1187 hdev->stat.err_tx++; 1188 1189 done: 1190 kfree(urb->setup_packet); 1191 1192 kfree_skb(skb); 1193 } 1194 1195 static int btusb_open(struct hci_dev *hdev) 1196 { 1197 struct btusb_data *data = hci_get_drvdata(hdev); 1198 int err; 1199 1200 BT_DBG("%s", hdev->name); 1201 1202 err = usb_autopm_get_interface(data->intf); 1203 if (err < 0) 1204 return err; 1205 1206 /* Patching USB firmware files prior to starting any URBs of HCI path 1207 * It is more safe to use USB bulk channel for downloading USB patch 1208 */ 1209 if (data->setup_on_usb) { 1210 err = data->setup_on_usb(hdev); 1211 if (err < 0) 1212 goto setup_fail; 1213 } 1214 1215 data->intf->needs_remote_wakeup = 1; 1216 1217 /* Disable device remote wakeup when host is suspended 1218 * For Realtek chips, global suspend without 1219 * SET_FEATURE (DEVICE_REMOTE_WAKEUP) can save more power in device. 1220 */ 1221 if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags)) 1222 device_wakeup_disable(&data->udev->dev); 1223 1224 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags)) 1225 goto done; 1226 1227 err = btusb_submit_intr_urb(hdev, GFP_KERNEL); 1228 if (err < 0) 1229 goto failed; 1230 1231 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL); 1232 if (err < 0) { 1233 usb_kill_anchored_urbs(&data->intr_anchor); 1234 goto failed; 1235 } 1236 1237 set_bit(BTUSB_BULK_RUNNING, &data->flags); 1238 btusb_submit_bulk_urb(hdev, GFP_KERNEL); 1239 1240 if (data->diag) { 1241 if (!btusb_submit_diag_urb(hdev, GFP_KERNEL)) 1242 set_bit(BTUSB_DIAG_RUNNING, &data->flags); 1243 } 1244 1245 done: 1246 usb_autopm_put_interface(data->intf); 1247 return 0; 1248 1249 failed: 1250 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 1251 setup_fail: 1252 usb_autopm_put_interface(data->intf); 1253 return err; 1254 } 1255 1256 static void btusb_stop_traffic(struct btusb_data *data) 1257 { 1258 usb_kill_anchored_urbs(&data->intr_anchor); 1259 usb_kill_anchored_urbs(&data->bulk_anchor); 1260 usb_kill_anchored_urbs(&data->isoc_anchor); 1261 usb_kill_anchored_urbs(&data->diag_anchor); 1262 usb_kill_anchored_urbs(&data->ctrl_anchor); 1263 } 1264 1265 static int btusb_close(struct hci_dev *hdev) 1266 { 1267 struct btusb_data *data = hci_get_drvdata(hdev); 1268 int err; 1269 1270 BT_DBG("%s", hdev->name); 1271 1272 cancel_work_sync(&data->work); 1273 cancel_work_sync(&data->waker); 1274 1275 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1276 clear_bit(BTUSB_BULK_RUNNING, &data->flags); 1277 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 1278 clear_bit(BTUSB_DIAG_RUNNING, &data->flags); 1279 1280 btusb_stop_traffic(data); 1281 btusb_free_frags(data); 1282 1283 err = usb_autopm_get_interface(data->intf); 1284 if (err < 0) 1285 goto failed; 1286 1287 data->intf->needs_remote_wakeup = 0; 1288 1289 /* Enable remote wake up for auto-suspend */ 1290 if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags)) 1291 data->intf->needs_remote_wakeup = 1; 1292 1293 usb_autopm_put_interface(data->intf); 1294 1295 failed: 1296 usb_scuttle_anchored_urbs(&data->deferred); 1297 return 0; 1298 } 1299 1300 static int btusb_flush(struct hci_dev *hdev) 1301 { 1302 struct btusb_data *data = hci_get_drvdata(hdev); 1303 1304 BT_DBG("%s", hdev->name); 1305 1306 usb_kill_anchored_urbs(&data->tx_anchor); 1307 btusb_free_frags(data); 1308 1309 return 0; 1310 } 1311 1312 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb) 1313 { 1314 struct btusb_data *data = hci_get_drvdata(hdev); 1315 struct usb_ctrlrequest *dr; 1316 struct urb *urb; 1317 unsigned int pipe; 1318 1319 urb = usb_alloc_urb(0, GFP_KERNEL); 1320 if (!urb) 1321 return ERR_PTR(-ENOMEM); 1322 1323 dr = kmalloc(sizeof(*dr), GFP_KERNEL); 1324 if (!dr) { 1325 usb_free_urb(urb); 1326 return ERR_PTR(-ENOMEM); 1327 } 1328 1329 dr->bRequestType = data->cmdreq_type; 1330 dr->bRequest = data->cmdreq; 1331 dr->wIndex = 0; 1332 dr->wValue = 0; 1333 dr->wLength = __cpu_to_le16(skb->len); 1334 1335 pipe = usb_sndctrlpipe(data->udev, 0x00); 1336 1337 usb_fill_control_urb(urb, data->udev, pipe, (void *)dr, 1338 skb->data, skb->len, btusb_tx_complete, skb); 1339 1340 skb->dev = (void *)hdev; 1341 1342 return urb; 1343 } 1344 1345 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb) 1346 { 1347 struct btusb_data *data = hci_get_drvdata(hdev); 1348 struct urb *urb; 1349 unsigned int pipe; 1350 1351 if (!data->bulk_tx_ep) 1352 return ERR_PTR(-ENODEV); 1353 1354 urb = usb_alloc_urb(0, GFP_KERNEL); 1355 if (!urb) 1356 return ERR_PTR(-ENOMEM); 1357 1358 pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress); 1359 1360 usb_fill_bulk_urb(urb, data->udev, pipe, 1361 skb->data, skb->len, btusb_tx_complete, skb); 1362 1363 skb->dev = (void *)hdev; 1364 1365 return urb; 1366 } 1367 1368 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb) 1369 { 1370 struct btusb_data *data = hci_get_drvdata(hdev); 1371 struct urb *urb; 1372 unsigned int pipe; 1373 1374 if (!data->isoc_tx_ep) 1375 return ERR_PTR(-ENODEV); 1376 1377 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL); 1378 if (!urb) 1379 return ERR_PTR(-ENOMEM); 1380 1381 pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress); 1382 1383 usb_fill_int_urb(urb, data->udev, pipe, 1384 skb->data, skb->len, btusb_isoc_tx_complete, 1385 skb, data->isoc_tx_ep->bInterval); 1386 1387 urb->transfer_flags = URB_ISO_ASAP; 1388 1389 __fill_isoc_descriptor(urb, skb->len, 1390 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize)); 1391 1392 skb->dev = (void *)hdev; 1393 1394 return urb; 1395 } 1396 1397 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb) 1398 { 1399 struct btusb_data *data = hci_get_drvdata(hdev); 1400 int err; 1401 1402 usb_anchor_urb(urb, &data->tx_anchor); 1403 1404 err = usb_submit_urb(urb, GFP_KERNEL); 1405 if (err < 0) { 1406 if (err != -EPERM && err != -ENODEV) 1407 bt_dev_err(hdev, "urb %p submission failed (%d)", 1408 urb, -err); 1409 kfree(urb->setup_packet); 1410 usb_unanchor_urb(urb); 1411 } else { 1412 usb_mark_last_busy(data->udev); 1413 } 1414 1415 usb_free_urb(urb); 1416 return err; 1417 } 1418 1419 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb) 1420 { 1421 struct btusb_data *data = hci_get_drvdata(hdev); 1422 unsigned long flags; 1423 bool suspending; 1424 1425 spin_lock_irqsave(&data->txlock, flags); 1426 suspending = test_bit(BTUSB_SUSPENDING, &data->flags); 1427 if (!suspending) 1428 data->tx_in_flight++; 1429 spin_unlock_irqrestore(&data->txlock, flags); 1430 1431 if (!suspending) 1432 return submit_tx_urb(hdev, urb); 1433 1434 usb_anchor_urb(urb, &data->deferred); 1435 schedule_work(&data->waker); 1436 1437 usb_free_urb(urb); 1438 return 0; 1439 } 1440 1441 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb) 1442 { 1443 struct urb *urb; 1444 1445 BT_DBG("%s", hdev->name); 1446 1447 switch (hci_skb_pkt_type(skb)) { 1448 case HCI_COMMAND_PKT: 1449 urb = alloc_ctrl_urb(hdev, skb); 1450 if (IS_ERR(urb)) 1451 return PTR_ERR(urb); 1452 1453 hdev->stat.cmd_tx++; 1454 return submit_or_queue_tx_urb(hdev, urb); 1455 1456 case HCI_ACLDATA_PKT: 1457 urb = alloc_bulk_urb(hdev, skb); 1458 if (IS_ERR(urb)) 1459 return PTR_ERR(urb); 1460 1461 hdev->stat.acl_tx++; 1462 return submit_or_queue_tx_urb(hdev, urb); 1463 1464 case HCI_SCODATA_PKT: 1465 if (hci_conn_num(hdev, SCO_LINK) < 1) 1466 return -ENODEV; 1467 1468 urb = alloc_isoc_urb(hdev, skb); 1469 if (IS_ERR(urb)) 1470 return PTR_ERR(urb); 1471 1472 hdev->stat.sco_tx++; 1473 return submit_tx_urb(hdev, urb); 1474 } 1475 1476 return -EILSEQ; 1477 } 1478 1479 static void btusb_notify(struct hci_dev *hdev, unsigned int evt) 1480 { 1481 struct btusb_data *data = hci_get_drvdata(hdev); 1482 1483 BT_DBG("%s evt %d", hdev->name, evt); 1484 1485 if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) { 1486 data->sco_num = hci_conn_num(hdev, SCO_LINK); 1487 schedule_work(&data->work); 1488 } 1489 } 1490 1491 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting) 1492 { 1493 struct btusb_data *data = hci_get_drvdata(hdev); 1494 struct usb_interface *intf = data->isoc; 1495 struct usb_endpoint_descriptor *ep_desc; 1496 int i, err; 1497 1498 if (!data->isoc) 1499 return -ENODEV; 1500 1501 err = usb_set_interface(data->udev, data->isoc_ifnum, altsetting); 1502 if (err < 0) { 1503 bt_dev_err(hdev, "setting interface failed (%d)", -err); 1504 return err; 1505 } 1506 1507 data->isoc_altsetting = altsetting; 1508 1509 data->isoc_tx_ep = NULL; 1510 data->isoc_rx_ep = NULL; 1511 1512 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { 1513 ep_desc = &intf->cur_altsetting->endpoint[i].desc; 1514 1515 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) { 1516 data->isoc_tx_ep = ep_desc; 1517 continue; 1518 } 1519 1520 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) { 1521 data->isoc_rx_ep = ep_desc; 1522 continue; 1523 } 1524 } 1525 1526 if (!data->isoc_tx_ep || !data->isoc_rx_ep) { 1527 bt_dev_err(hdev, "invalid SCO descriptors"); 1528 return -ENODEV; 1529 } 1530 1531 return 0; 1532 } 1533 1534 static void btusb_work(struct work_struct *work) 1535 { 1536 struct btusb_data *data = container_of(work, struct btusb_data, work); 1537 struct hci_dev *hdev = data->hdev; 1538 int new_alts; 1539 int err; 1540 1541 if (data->sco_num > 0) { 1542 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) { 1543 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf); 1544 if (err < 0) { 1545 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1546 usb_kill_anchored_urbs(&data->isoc_anchor); 1547 return; 1548 } 1549 1550 set_bit(BTUSB_DID_ISO_RESUME, &data->flags); 1551 } 1552 1553 if (hdev->voice_setting & 0x0020) { 1554 static const int alts[3] = { 2, 4, 5 }; 1555 1556 new_alts = alts[data->sco_num - 1]; 1557 } else { 1558 new_alts = data->sco_num; 1559 } 1560 1561 if (data->isoc_altsetting != new_alts) { 1562 unsigned long flags; 1563 1564 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1565 usb_kill_anchored_urbs(&data->isoc_anchor); 1566 1567 /* When isochronous alternate setting needs to be 1568 * changed, because SCO connection has been added 1569 * or removed, a packet fragment may be left in the 1570 * reassembling state. This could lead to wrongly 1571 * assembled fragments. 1572 * 1573 * Clear outstanding fragment when selecting a new 1574 * alternate setting. 1575 */ 1576 spin_lock_irqsave(&data->rxlock, flags); 1577 kfree_skb(data->sco_skb); 1578 data->sco_skb = NULL; 1579 spin_unlock_irqrestore(&data->rxlock, flags); 1580 1581 if (__set_isoc_interface(hdev, new_alts) < 0) 1582 return; 1583 } 1584 1585 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) { 1586 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0) 1587 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1588 else 1589 btusb_submit_isoc_urb(hdev, GFP_KERNEL); 1590 } 1591 } else { 1592 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1593 usb_kill_anchored_urbs(&data->isoc_anchor); 1594 1595 __set_isoc_interface(hdev, 0); 1596 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags)) 1597 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf); 1598 } 1599 } 1600 1601 static void btusb_waker(struct work_struct *work) 1602 { 1603 struct btusb_data *data = container_of(work, struct btusb_data, waker); 1604 int err; 1605 1606 err = usb_autopm_get_interface(data->intf); 1607 if (err < 0) 1608 return; 1609 1610 usb_autopm_put_interface(data->intf); 1611 } 1612 1613 static int btusb_setup_bcm92035(struct hci_dev *hdev) 1614 { 1615 struct sk_buff *skb; 1616 u8 val = 0x00; 1617 1618 BT_DBG("%s", hdev->name); 1619 1620 skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT); 1621 if (IS_ERR(skb)) 1622 bt_dev_err(hdev, "BCM92035 command failed (%ld)", PTR_ERR(skb)); 1623 else 1624 kfree_skb(skb); 1625 1626 return 0; 1627 } 1628 1629 static int btusb_setup_csr(struct hci_dev *hdev) 1630 { 1631 struct hci_rp_read_local_version *rp; 1632 struct sk_buff *skb; 1633 1634 BT_DBG("%s", hdev->name); 1635 1636 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL, 1637 HCI_INIT_TIMEOUT); 1638 if (IS_ERR(skb)) { 1639 int err = PTR_ERR(skb); 1640 bt_dev_err(hdev, "CSR: Local version failed (%d)", err); 1641 return err; 1642 } 1643 1644 if (skb->len != sizeof(struct hci_rp_read_local_version)) { 1645 bt_dev_err(hdev, "CSR: Local version length mismatch"); 1646 kfree_skb(skb); 1647 return -EIO; 1648 } 1649 1650 rp = (struct hci_rp_read_local_version *)skb->data; 1651 1652 /* Detect controllers which aren't real CSR ones. */ 1653 if (le16_to_cpu(rp->manufacturer) != 10 || 1654 le16_to_cpu(rp->lmp_subver) == 0x0c5c) { 1655 /* Clear the reset quirk since this is not an actual 1656 * early Bluetooth 1.1 device from CSR. 1657 */ 1658 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); 1659 1660 /* These fake CSR controllers have all a broken 1661 * stored link key handling and so just disable it. 1662 */ 1663 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks); 1664 } 1665 1666 kfree_skb(skb); 1667 1668 return 0; 1669 } 1670 1671 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev, 1672 struct intel_version *ver) 1673 { 1674 const struct firmware *fw; 1675 char fwname[64]; 1676 int ret; 1677 1678 snprintf(fwname, sizeof(fwname), 1679 "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq", 1680 ver->hw_platform, ver->hw_variant, ver->hw_revision, 1681 ver->fw_variant, ver->fw_revision, ver->fw_build_num, 1682 ver->fw_build_ww, ver->fw_build_yy); 1683 1684 ret = request_firmware(&fw, fwname, &hdev->dev); 1685 if (ret < 0) { 1686 if (ret == -EINVAL) { 1687 bt_dev_err(hdev, "Intel firmware file request failed (%d)", 1688 ret); 1689 return NULL; 1690 } 1691 1692 bt_dev_err(hdev, "failed to open Intel firmware file: %s (%d)", 1693 fwname, ret); 1694 1695 /* If the correct firmware patch file is not found, use the 1696 * default firmware patch file instead 1697 */ 1698 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq", 1699 ver->hw_platform, ver->hw_variant); 1700 if (request_firmware(&fw, fwname, &hdev->dev) < 0) { 1701 bt_dev_err(hdev, "failed to open default fw file: %s", 1702 fwname); 1703 return NULL; 1704 } 1705 } 1706 1707 bt_dev_info(hdev, "Intel Bluetooth firmware file: %s", fwname); 1708 1709 return fw; 1710 } 1711 1712 static int btusb_setup_intel_patching(struct hci_dev *hdev, 1713 const struct firmware *fw, 1714 const u8 **fw_ptr, int *disable_patch) 1715 { 1716 struct sk_buff *skb; 1717 struct hci_command_hdr *cmd; 1718 const u8 *cmd_param; 1719 struct hci_event_hdr *evt = NULL; 1720 const u8 *evt_param = NULL; 1721 int remain = fw->size - (*fw_ptr - fw->data); 1722 1723 /* The first byte indicates the types of the patch command or event. 1724 * 0x01 means HCI command and 0x02 is HCI event. If the first bytes 1725 * in the current firmware buffer doesn't start with 0x01 or 1726 * the size of remain buffer is smaller than HCI command header, 1727 * the firmware file is corrupted and it should stop the patching 1728 * process. 1729 */ 1730 if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) { 1731 bt_dev_err(hdev, "Intel fw corrupted: invalid cmd read"); 1732 return -EINVAL; 1733 } 1734 (*fw_ptr)++; 1735 remain--; 1736 1737 cmd = (struct hci_command_hdr *)(*fw_ptr); 1738 *fw_ptr += sizeof(*cmd); 1739 remain -= sizeof(*cmd); 1740 1741 /* Ensure that the remain firmware data is long enough than the length 1742 * of command parameter. If not, the firmware file is corrupted. 1743 */ 1744 if (remain < cmd->plen) { 1745 bt_dev_err(hdev, "Intel fw corrupted: invalid cmd len"); 1746 return -EFAULT; 1747 } 1748 1749 /* If there is a command that loads a patch in the firmware 1750 * file, then enable the patch upon success, otherwise just 1751 * disable the manufacturer mode, for example patch activation 1752 * is not required when the default firmware patch file is used 1753 * because there are no patch data to load. 1754 */ 1755 if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e) 1756 *disable_patch = 0; 1757 1758 cmd_param = *fw_ptr; 1759 *fw_ptr += cmd->plen; 1760 remain -= cmd->plen; 1761 1762 /* This reads the expected events when the above command is sent to the 1763 * device. Some vendor commands expects more than one events, for 1764 * example command status event followed by vendor specific event. 1765 * For this case, it only keeps the last expected event. so the command 1766 * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of 1767 * last expected event. 1768 */ 1769 while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) { 1770 (*fw_ptr)++; 1771 remain--; 1772 1773 evt = (struct hci_event_hdr *)(*fw_ptr); 1774 *fw_ptr += sizeof(*evt); 1775 remain -= sizeof(*evt); 1776 1777 if (remain < evt->plen) { 1778 bt_dev_err(hdev, "Intel fw corrupted: invalid evt len"); 1779 return -EFAULT; 1780 } 1781 1782 evt_param = *fw_ptr; 1783 *fw_ptr += evt->plen; 1784 remain -= evt->plen; 1785 } 1786 1787 /* Every HCI commands in the firmware file has its correspond event. 1788 * If event is not found or remain is smaller than zero, the firmware 1789 * file is corrupted. 1790 */ 1791 if (!evt || !evt_param || remain < 0) { 1792 bt_dev_err(hdev, "Intel fw corrupted: invalid evt read"); 1793 return -EFAULT; 1794 } 1795 1796 skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen, 1797 cmd_param, evt->evt, HCI_INIT_TIMEOUT); 1798 if (IS_ERR(skb)) { 1799 bt_dev_err(hdev, "sending Intel patch command (0x%4.4x) failed (%ld)", 1800 cmd->opcode, PTR_ERR(skb)); 1801 return PTR_ERR(skb); 1802 } 1803 1804 /* It ensures that the returned event matches the event data read from 1805 * the firmware file. At fist, it checks the length and then 1806 * the contents of the event. 1807 */ 1808 if (skb->len != evt->plen) { 1809 bt_dev_err(hdev, "mismatch event length (opcode 0x%4.4x)", 1810 le16_to_cpu(cmd->opcode)); 1811 kfree_skb(skb); 1812 return -EFAULT; 1813 } 1814 1815 if (memcmp(skb->data, evt_param, evt->plen)) { 1816 bt_dev_err(hdev, "mismatch event parameter (opcode 0x%4.4x)", 1817 le16_to_cpu(cmd->opcode)); 1818 kfree_skb(skb); 1819 return -EFAULT; 1820 } 1821 kfree_skb(skb); 1822 1823 return 0; 1824 } 1825 1826 static int btusb_setup_intel(struct hci_dev *hdev) 1827 { 1828 struct sk_buff *skb; 1829 const struct firmware *fw; 1830 const u8 *fw_ptr; 1831 int disable_patch, err; 1832 struct intel_version ver; 1833 1834 BT_DBG("%s", hdev->name); 1835 1836 /* The controller has a bug with the first HCI command sent to it 1837 * returning number of completed commands as zero. This would stall the 1838 * command processing in the Bluetooth core. 1839 * 1840 * As a workaround, send HCI Reset command first which will reset the 1841 * number of completed commands and allow normal command processing 1842 * from now on. 1843 */ 1844 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT); 1845 if (IS_ERR(skb)) { 1846 bt_dev_err(hdev, "sending initial HCI reset command failed (%ld)", 1847 PTR_ERR(skb)); 1848 return PTR_ERR(skb); 1849 } 1850 kfree_skb(skb); 1851 1852 /* Read Intel specific controller version first to allow selection of 1853 * which firmware file to load. 1854 * 1855 * The returned information are hardware variant and revision plus 1856 * firmware variant, revision and build number. 1857 */ 1858 err = btintel_read_version(hdev, &ver); 1859 if (err) 1860 return err; 1861 1862 bt_dev_info(hdev, "read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x", 1863 ver.hw_platform, ver.hw_variant, ver.hw_revision, 1864 ver.fw_variant, ver.fw_revision, ver.fw_build_num, 1865 ver.fw_build_ww, ver.fw_build_yy, ver.fw_patch_num); 1866 1867 /* fw_patch_num indicates the version of patch the device currently 1868 * have. If there is no patch data in the device, it is always 0x00. 1869 * So, if it is other than 0x00, no need to patch the device again. 1870 */ 1871 if (ver.fw_patch_num) { 1872 bt_dev_info(hdev, "Intel device is already patched. " 1873 "patch num: %02x", ver.fw_patch_num); 1874 goto complete; 1875 } 1876 1877 /* Opens the firmware patch file based on the firmware version read 1878 * from the controller. If it fails to open the matching firmware 1879 * patch file, it tries to open the default firmware patch file. 1880 * If no patch file is found, allow the device to operate without 1881 * a patch. 1882 */ 1883 fw = btusb_setup_intel_get_fw(hdev, &ver); 1884 if (!fw) 1885 goto complete; 1886 fw_ptr = fw->data; 1887 1888 /* Enable the manufacturer mode of the controller. 1889 * Only while this mode is enabled, the driver can download the 1890 * firmware patch data and configuration parameters. 1891 */ 1892 err = btintel_enter_mfg(hdev); 1893 if (err) { 1894 release_firmware(fw); 1895 return err; 1896 } 1897 1898 disable_patch = 1; 1899 1900 /* The firmware data file consists of list of Intel specific HCI 1901 * commands and its expected events. The first byte indicates the 1902 * type of the message, either HCI command or HCI event. 1903 * 1904 * It reads the command and its expected event from the firmware file, 1905 * and send to the controller. Once __hci_cmd_sync_ev() returns, 1906 * the returned event is compared with the event read from the firmware 1907 * file and it will continue until all the messages are downloaded to 1908 * the controller. 1909 * 1910 * Once the firmware patching is completed successfully, 1911 * the manufacturer mode is disabled with reset and activating the 1912 * downloaded patch. 1913 * 1914 * If the firmware patching fails, the manufacturer mode is 1915 * disabled with reset and deactivating the patch. 1916 * 1917 * If the default patch file is used, no reset is done when disabling 1918 * the manufacturer. 1919 */ 1920 while (fw->size > fw_ptr - fw->data) { 1921 int ret; 1922 1923 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr, 1924 &disable_patch); 1925 if (ret < 0) 1926 goto exit_mfg_deactivate; 1927 } 1928 1929 release_firmware(fw); 1930 1931 if (disable_patch) 1932 goto exit_mfg_disable; 1933 1934 /* Patching completed successfully and disable the manufacturer mode 1935 * with reset and activate the downloaded firmware patches. 1936 */ 1937 err = btintel_exit_mfg(hdev, true, true); 1938 if (err) 1939 return err; 1940 1941 /* Need build number for downloaded fw patches in 1942 * every power-on boot 1943 */ 1944 err = btintel_read_version(hdev, &ver); 1945 if (err) 1946 return err; 1947 bt_dev_info(hdev, "Intel BT fw patch 0x%02x completed & activated", 1948 ver.fw_patch_num); 1949 1950 goto complete; 1951 1952 exit_mfg_disable: 1953 /* Disable the manufacturer mode without reset */ 1954 err = btintel_exit_mfg(hdev, false, false); 1955 if (err) 1956 return err; 1957 1958 bt_dev_info(hdev, "Intel firmware patch completed"); 1959 1960 goto complete; 1961 1962 exit_mfg_deactivate: 1963 release_firmware(fw); 1964 1965 /* Patching failed. Disable the manufacturer mode with reset and 1966 * deactivate the downloaded firmware patches. 1967 */ 1968 err = btintel_exit_mfg(hdev, true, false); 1969 if (err) 1970 return err; 1971 1972 bt_dev_info(hdev, "Intel firmware patch completed and deactivated"); 1973 1974 complete: 1975 /* Set the event mask for Intel specific vendor events. This enables 1976 * a few extra events that are useful during general operation. 1977 */ 1978 btintel_set_event_mask_mfg(hdev, false); 1979 1980 btintel_check_bdaddr(hdev); 1981 return 0; 1982 } 1983 1984 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode) 1985 { 1986 struct sk_buff *skb; 1987 struct hci_event_hdr *hdr; 1988 struct hci_ev_cmd_complete *evt; 1989 1990 skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_KERNEL); 1991 if (!skb) 1992 return -ENOMEM; 1993 1994 hdr = skb_put(skb, sizeof(*hdr)); 1995 hdr->evt = HCI_EV_CMD_COMPLETE; 1996 hdr->plen = sizeof(*evt) + 1; 1997 1998 evt = skb_put(skb, sizeof(*evt)); 1999 evt->ncmd = 0x01; 2000 evt->opcode = cpu_to_le16(opcode); 2001 2002 skb_put_u8(skb, 0x00); 2003 2004 hci_skb_pkt_type(skb) = HCI_EVENT_PKT; 2005 2006 return hci_recv_frame(hdev, skb); 2007 } 2008 2009 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer, 2010 int count) 2011 { 2012 /* When the device is in bootloader mode, then it can send 2013 * events via the bulk endpoint. These events are treated the 2014 * same way as the ones received from the interrupt endpoint. 2015 */ 2016 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) 2017 return btusb_recv_intr(data, buffer, count); 2018 2019 return btusb_recv_bulk(data, buffer, count); 2020 } 2021 2022 static void btusb_intel_bootup(struct btusb_data *data, const void *ptr, 2023 unsigned int len) 2024 { 2025 const struct intel_bootup *evt = ptr; 2026 2027 if (len != sizeof(*evt)) 2028 return; 2029 2030 if (test_and_clear_bit(BTUSB_BOOTING, &data->flags)) 2031 wake_up_bit(&data->flags, BTUSB_BOOTING); 2032 } 2033 2034 static void btusb_intel_secure_send_result(struct btusb_data *data, 2035 const void *ptr, unsigned int len) 2036 { 2037 const struct intel_secure_send_result *evt = ptr; 2038 2039 if (len != sizeof(*evt)) 2040 return; 2041 2042 if (evt->result) 2043 set_bit(BTUSB_FIRMWARE_FAILED, &data->flags); 2044 2045 if (test_and_clear_bit(BTUSB_DOWNLOADING, &data->flags) && 2046 test_bit(BTUSB_FIRMWARE_LOADED, &data->flags)) 2047 wake_up_bit(&data->flags, BTUSB_DOWNLOADING); 2048 } 2049 2050 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb) 2051 { 2052 struct btusb_data *data = hci_get_drvdata(hdev); 2053 2054 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) { 2055 struct hci_event_hdr *hdr = (void *)skb->data; 2056 2057 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff && 2058 hdr->plen > 0) { 2059 const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1; 2060 unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1; 2061 2062 switch (skb->data[2]) { 2063 case 0x02: 2064 /* When switching to the operational firmware 2065 * the device sends a vendor specific event 2066 * indicating that the bootup completed. 2067 */ 2068 btusb_intel_bootup(data, ptr, len); 2069 break; 2070 case 0x06: 2071 /* When the firmware loading completes the 2072 * device sends out a vendor specific event 2073 * indicating the result of the firmware 2074 * loading. 2075 */ 2076 btusb_intel_secure_send_result(data, ptr, len); 2077 break; 2078 } 2079 } 2080 } 2081 2082 return hci_recv_frame(hdev, skb); 2083 } 2084 2085 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb) 2086 { 2087 struct btusb_data *data = hci_get_drvdata(hdev); 2088 struct urb *urb; 2089 2090 BT_DBG("%s", hdev->name); 2091 2092 switch (hci_skb_pkt_type(skb)) { 2093 case HCI_COMMAND_PKT: 2094 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) { 2095 struct hci_command_hdr *cmd = (void *)skb->data; 2096 __u16 opcode = le16_to_cpu(cmd->opcode); 2097 2098 /* When in bootloader mode and the command 0xfc09 2099 * is received, it needs to be send down the 2100 * bulk endpoint. So allocate a bulk URB instead. 2101 */ 2102 if (opcode == 0xfc09) 2103 urb = alloc_bulk_urb(hdev, skb); 2104 else 2105 urb = alloc_ctrl_urb(hdev, skb); 2106 2107 /* When the 0xfc01 command is issued to boot into 2108 * the operational firmware, it will actually not 2109 * send a command complete event. To keep the flow 2110 * control working inject that event here. 2111 */ 2112 if (opcode == 0xfc01) 2113 inject_cmd_complete(hdev, opcode); 2114 } else { 2115 urb = alloc_ctrl_urb(hdev, skb); 2116 } 2117 if (IS_ERR(urb)) 2118 return PTR_ERR(urb); 2119 2120 hdev->stat.cmd_tx++; 2121 return submit_or_queue_tx_urb(hdev, urb); 2122 2123 case HCI_ACLDATA_PKT: 2124 urb = alloc_bulk_urb(hdev, skb); 2125 if (IS_ERR(urb)) 2126 return PTR_ERR(urb); 2127 2128 hdev->stat.acl_tx++; 2129 return submit_or_queue_tx_urb(hdev, urb); 2130 2131 case HCI_SCODATA_PKT: 2132 if (hci_conn_num(hdev, SCO_LINK) < 1) 2133 return -ENODEV; 2134 2135 urb = alloc_isoc_urb(hdev, skb); 2136 if (IS_ERR(urb)) 2137 return PTR_ERR(urb); 2138 2139 hdev->stat.sco_tx++; 2140 return submit_tx_urb(hdev, urb); 2141 } 2142 2143 return -EILSEQ; 2144 } 2145 2146 static bool btusb_setup_intel_new_get_fw_name(struct intel_version *ver, 2147 struct intel_boot_params *params, 2148 char *fw_name, size_t len, 2149 const char *suffix) 2150 { 2151 switch (ver->hw_variant) { 2152 case 0x0b: /* SfP */ 2153 case 0x0c: /* WsP */ 2154 snprintf(fw_name, len, "intel/ibt-%u-%u.%s", 2155 le16_to_cpu(ver->hw_variant), 2156 le16_to_cpu(params->dev_revid), 2157 suffix); 2158 break; 2159 case 0x11: /* JfP */ 2160 case 0x12: /* ThP */ 2161 case 0x13: /* HrP */ 2162 case 0x14: /* CcP */ 2163 snprintf(fw_name, len, "intel/ibt-%u-%u-%u.%s", 2164 le16_to_cpu(ver->hw_variant), 2165 le16_to_cpu(ver->hw_revision), 2166 le16_to_cpu(ver->fw_revision), 2167 suffix); 2168 break; 2169 default: 2170 return false; 2171 } 2172 return true; 2173 } 2174 2175 static int btusb_setup_intel_new(struct hci_dev *hdev) 2176 { 2177 struct btusb_data *data = hci_get_drvdata(hdev); 2178 struct intel_version ver; 2179 struct intel_boot_params params; 2180 const struct firmware *fw; 2181 u32 boot_param; 2182 char fwname[64]; 2183 ktime_t calltime, delta, rettime; 2184 unsigned long long duration; 2185 int err; 2186 2187 BT_DBG("%s", hdev->name); 2188 2189 /* Set the default boot parameter to 0x0 and it is updated to 2190 * SKU specific boot parameter after reading Intel_Write_Boot_Params 2191 * command while downloading the firmware. 2192 */ 2193 boot_param = 0x00000000; 2194 2195 calltime = ktime_get(); 2196 2197 /* Read the Intel version information to determine if the device 2198 * is in bootloader mode or if it already has operational firmware 2199 * loaded. 2200 */ 2201 err = btintel_read_version(hdev, &ver); 2202 if (err) { 2203 bt_dev_err(hdev, "Intel Read version failed (%d)", err); 2204 btintel_reset_to_bootloader(hdev); 2205 return err; 2206 } 2207 2208 /* The hardware platform number has a fixed value of 0x37 and 2209 * for now only accept this single value. 2210 */ 2211 if (ver.hw_platform != 0x37) { 2212 bt_dev_err(hdev, "Unsupported Intel hardware platform (%u)", 2213 ver.hw_platform); 2214 return -EINVAL; 2215 } 2216 2217 /* Check for supported iBT hardware variants of this firmware 2218 * loading method. 2219 * 2220 * This check has been put in place to ensure correct forward 2221 * compatibility options when newer hardware variants come along. 2222 */ 2223 switch (ver.hw_variant) { 2224 case 0x0b: /* SfP */ 2225 case 0x0c: /* WsP */ 2226 case 0x11: /* JfP */ 2227 case 0x12: /* ThP */ 2228 case 0x13: /* HrP */ 2229 case 0x14: /* CcP */ 2230 break; 2231 default: 2232 bt_dev_err(hdev, "Unsupported Intel hardware variant (%u)", 2233 ver.hw_variant); 2234 return -EINVAL; 2235 } 2236 2237 btintel_version_info(hdev, &ver); 2238 2239 /* The firmware variant determines if the device is in bootloader 2240 * mode or is running operational firmware. The value 0x06 identifies 2241 * the bootloader and the value 0x23 identifies the operational 2242 * firmware. 2243 * 2244 * When the operational firmware is already present, then only 2245 * the check for valid Bluetooth device address is needed. This 2246 * determines if the device will be added as configured or 2247 * unconfigured controller. 2248 * 2249 * It is not possible to use the Secure Boot Parameters in this 2250 * case since that command is only available in bootloader mode. 2251 */ 2252 if (ver.fw_variant == 0x23) { 2253 clear_bit(BTUSB_BOOTLOADER, &data->flags); 2254 btintel_check_bdaddr(hdev); 2255 return 0; 2256 } 2257 2258 /* If the device is not in bootloader mode, then the only possible 2259 * choice is to return an error and abort the device initialization. 2260 */ 2261 if (ver.fw_variant != 0x06) { 2262 bt_dev_err(hdev, "Unsupported Intel firmware variant (%u)", 2263 ver.fw_variant); 2264 return -ENODEV; 2265 } 2266 2267 /* Read the secure boot parameters to identify the operating 2268 * details of the bootloader. 2269 */ 2270 err = btintel_read_boot_params(hdev, ¶ms); 2271 if (err) 2272 return err; 2273 2274 /* It is required that every single firmware fragment is acknowledged 2275 * with a command complete event. If the boot parameters indicate 2276 * that this bootloader does not send them, then abort the setup. 2277 */ 2278 if (params.limited_cce != 0x00) { 2279 bt_dev_err(hdev, "Unsupported Intel firmware loading method (%u)", 2280 params.limited_cce); 2281 return -EINVAL; 2282 } 2283 2284 /* If the OTP has no valid Bluetooth device address, then there will 2285 * also be no valid address for the operational firmware. 2286 */ 2287 if (!bacmp(¶ms.otp_bdaddr, BDADDR_ANY)) { 2288 bt_dev_info(hdev, "No device address configured"); 2289 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks); 2290 } 2291 2292 /* With this Intel bootloader only the hardware variant and device 2293 * revision information are used to select the right firmware for SfP 2294 * and WsP. 2295 * 2296 * The firmware filename is ibt-<hw_variant>-<dev_revid>.sfi. 2297 * 2298 * Currently the supported hardware variants are: 2299 * 11 (0x0b) for iBT3.0 (LnP/SfP) 2300 * 12 (0x0c) for iBT3.5 (WsP) 2301 * 2302 * For ThP/JfP and for future SKU's, the FW name varies based on HW 2303 * variant, HW revision and FW revision, as these are dependent on CNVi 2304 * and RF Combination. 2305 * 2306 * 17 (0x11) for iBT3.5 (JfP) 2307 * 18 (0x12) for iBT3.5 (ThP) 2308 * 2309 * The firmware file name for these will be 2310 * ibt-<hw_variant>-<hw_revision>-<fw_revision>.sfi. 2311 * 2312 */ 2313 err = btusb_setup_intel_new_get_fw_name(&ver, ¶ms, fwname, 2314 sizeof(fwname), "sfi"); 2315 if (!err) { 2316 bt_dev_err(hdev, "Unsupported Intel firmware naming"); 2317 return -EINVAL; 2318 } 2319 2320 err = request_firmware(&fw, fwname, &hdev->dev); 2321 if (err < 0) { 2322 bt_dev_err(hdev, "Failed to load Intel firmware file (%d)", err); 2323 return err; 2324 } 2325 2326 bt_dev_info(hdev, "Found device firmware: %s", fwname); 2327 2328 /* Save the DDC file name for later use to apply once the firmware 2329 * downloading is done. 2330 */ 2331 err = btusb_setup_intel_new_get_fw_name(&ver, ¶ms, fwname, 2332 sizeof(fwname), "ddc"); 2333 if (!err) { 2334 bt_dev_err(hdev, "Unsupported Intel firmware naming"); 2335 return -EINVAL; 2336 } 2337 2338 if (fw->size < 644) { 2339 bt_dev_err(hdev, "Invalid size of firmware file (%zu)", 2340 fw->size); 2341 err = -EBADF; 2342 goto done; 2343 } 2344 2345 set_bit(BTUSB_DOWNLOADING, &data->flags); 2346 2347 /* Start firmware downloading and get boot parameter */ 2348 err = btintel_download_firmware(hdev, fw, &boot_param); 2349 if (err < 0) { 2350 /* When FW download fails, send Intel Reset to retry 2351 * FW download. 2352 */ 2353 btintel_reset_to_bootloader(hdev); 2354 goto done; 2355 } 2356 set_bit(BTUSB_FIRMWARE_LOADED, &data->flags); 2357 2358 bt_dev_info(hdev, "Waiting for firmware download to complete"); 2359 2360 /* Before switching the device into operational mode and with that 2361 * booting the loaded firmware, wait for the bootloader notification 2362 * that all fragments have been successfully received. 2363 * 2364 * When the event processing receives the notification, then the 2365 * BTUSB_DOWNLOADING flag will be cleared. 2366 * 2367 * The firmware loading should not take longer than 5 seconds 2368 * and thus just timeout if that happens and fail the setup 2369 * of this device. 2370 */ 2371 err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING, 2372 TASK_INTERRUPTIBLE, 2373 msecs_to_jiffies(5000)); 2374 if (err == -EINTR) { 2375 bt_dev_err(hdev, "Firmware loading interrupted"); 2376 goto done; 2377 } 2378 2379 if (err) { 2380 bt_dev_err(hdev, "Firmware loading timeout"); 2381 err = -ETIMEDOUT; 2382 btintel_reset_to_bootloader(hdev); 2383 goto done; 2384 } 2385 2386 if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) { 2387 bt_dev_err(hdev, "Firmware loading failed"); 2388 err = -ENOEXEC; 2389 goto done; 2390 } 2391 2392 rettime = ktime_get(); 2393 delta = ktime_sub(rettime, calltime); 2394 duration = (unsigned long long) ktime_to_ns(delta) >> 10; 2395 2396 bt_dev_info(hdev, "Firmware loaded in %llu usecs", duration); 2397 2398 done: 2399 release_firmware(fw); 2400 2401 if (err < 0) 2402 return err; 2403 2404 calltime = ktime_get(); 2405 2406 set_bit(BTUSB_BOOTING, &data->flags); 2407 2408 err = btintel_send_intel_reset(hdev, boot_param); 2409 if (err) { 2410 bt_dev_err(hdev, "Intel Soft Reset failed (%d)", err); 2411 btintel_reset_to_bootloader(hdev); 2412 return err; 2413 } 2414 2415 /* The bootloader will not indicate when the device is ready. This 2416 * is done by the operational firmware sending bootup notification. 2417 * 2418 * Booting into operational firmware should not take longer than 2419 * 1 second. However if that happens, then just fail the setup 2420 * since something went wrong. 2421 */ 2422 bt_dev_info(hdev, "Waiting for device to boot"); 2423 2424 err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING, 2425 TASK_INTERRUPTIBLE, 2426 msecs_to_jiffies(1000)); 2427 2428 if (err == -EINTR) { 2429 bt_dev_err(hdev, "Device boot interrupted"); 2430 return -EINTR; 2431 } 2432 2433 if (err) { 2434 bt_dev_err(hdev, "Device boot timeout"); 2435 btintel_reset_to_bootloader(hdev); 2436 return -ETIMEDOUT; 2437 } 2438 2439 rettime = ktime_get(); 2440 delta = ktime_sub(rettime, calltime); 2441 duration = (unsigned long long) ktime_to_ns(delta) >> 10; 2442 2443 bt_dev_info(hdev, "Device booted in %llu usecs", duration); 2444 2445 clear_bit(BTUSB_BOOTLOADER, &data->flags); 2446 2447 /* Once the device is running in operational mode, it needs to apply 2448 * the device configuration (DDC) parameters. 2449 * 2450 * The device can work without DDC parameters, so even if it fails 2451 * to load the file, no need to fail the setup. 2452 */ 2453 btintel_load_ddc_config(hdev, fwname); 2454 2455 /* Set the event mask for Intel specific vendor events. This enables 2456 * a few extra events that are useful during general operation. It 2457 * does not enable any debugging related events. 2458 * 2459 * The device will function correctly without these events enabled 2460 * and thus no need to fail the setup. 2461 */ 2462 btintel_set_event_mask(hdev, false); 2463 2464 /* Read the Intel version information after loading the FW */ 2465 err = btintel_read_version(hdev, &ver); 2466 if (err) 2467 return err; 2468 2469 btintel_version_info(hdev, &ver); 2470 2471 return 0; 2472 } 2473 2474 static int btusb_shutdown_intel(struct hci_dev *hdev) 2475 { 2476 struct sk_buff *skb; 2477 long ret; 2478 2479 /* In the shutdown sequence where Bluetooth is turned off followed 2480 * by WiFi being turned off, turning WiFi back on causes issue with 2481 * the RF calibration. 2482 * 2483 * To ensure that any RF activity has been stopped, issue HCI Reset 2484 * command to clear all ongoing activity including advertising, 2485 * scanning etc. 2486 */ 2487 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT); 2488 if (IS_ERR(skb)) { 2489 ret = PTR_ERR(skb); 2490 bt_dev_err(hdev, "HCI reset during shutdown failed"); 2491 return ret; 2492 } 2493 kfree_skb(skb); 2494 2495 /* Some platforms have an issue with BT LED when the interface is 2496 * down or BT radio is turned off, which takes 5 seconds to BT LED 2497 * goes off. This command turns off the BT LED immediately. 2498 */ 2499 skb = __hci_cmd_sync(hdev, 0xfc3f, 0, NULL, HCI_INIT_TIMEOUT); 2500 if (IS_ERR(skb)) { 2501 ret = PTR_ERR(skb); 2502 bt_dev_err(hdev, "turning off Intel device LED failed"); 2503 return ret; 2504 } 2505 kfree_skb(skb); 2506 2507 return 0; 2508 } 2509 2510 static int btusb_shutdown_intel_new(struct hci_dev *hdev) 2511 { 2512 struct sk_buff *skb; 2513 2514 /* Send HCI Reset to the controller to stop any BT activity which 2515 * were triggered. This will help to save power and maintain the 2516 * sync b/w Host and controller 2517 */ 2518 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT); 2519 if (IS_ERR(skb)) { 2520 bt_dev_err(hdev, "HCI reset during shutdown failed"); 2521 return PTR_ERR(skb); 2522 } 2523 kfree_skb(skb); 2524 2525 return 0; 2526 } 2527 2528 #define FIRMWARE_MT7663 "mediatek/mt7663pr2h.bin" 2529 #define FIRMWARE_MT7668 "mediatek/mt7668pr2h.bin" 2530 2531 #define HCI_WMT_MAX_EVENT_SIZE 64 2532 2533 enum { 2534 BTMTK_WMT_PATCH_DWNLD = 0x1, 2535 BTMTK_WMT_FUNC_CTRL = 0x6, 2536 BTMTK_WMT_RST = 0x7, 2537 BTMTK_WMT_SEMAPHORE = 0x17, 2538 }; 2539 2540 enum { 2541 BTMTK_WMT_INVALID, 2542 BTMTK_WMT_PATCH_UNDONE, 2543 BTMTK_WMT_PATCH_DONE, 2544 BTMTK_WMT_ON_UNDONE, 2545 BTMTK_WMT_ON_DONE, 2546 BTMTK_WMT_ON_PROGRESS, 2547 }; 2548 2549 struct btmtk_wmt_hdr { 2550 u8 dir; 2551 u8 op; 2552 __le16 dlen; 2553 u8 flag; 2554 } __packed; 2555 2556 struct btmtk_hci_wmt_cmd { 2557 struct btmtk_wmt_hdr hdr; 2558 u8 data[256]; 2559 } __packed; 2560 2561 struct btmtk_hci_wmt_evt { 2562 struct hci_event_hdr hhdr; 2563 struct btmtk_wmt_hdr whdr; 2564 } __packed; 2565 2566 struct btmtk_hci_wmt_evt_funcc { 2567 struct btmtk_hci_wmt_evt hwhdr; 2568 __be16 status; 2569 } __packed; 2570 2571 struct btmtk_tci_sleep { 2572 u8 mode; 2573 __le16 duration; 2574 __le16 host_duration; 2575 u8 host_wakeup_pin; 2576 u8 time_compensation; 2577 } __packed; 2578 2579 struct btmtk_hci_wmt_params { 2580 u8 op; 2581 u8 flag; 2582 u16 dlen; 2583 const void *data; 2584 u32 *status; 2585 }; 2586 2587 static void btusb_mtk_wmt_recv(struct urb *urb) 2588 { 2589 struct hci_dev *hdev = urb->context; 2590 struct btusb_data *data = hci_get_drvdata(hdev); 2591 struct hci_event_hdr *hdr; 2592 struct sk_buff *skb; 2593 int err; 2594 2595 if (urb->status == 0 && urb->actual_length > 0) { 2596 hdev->stat.byte_rx += urb->actual_length; 2597 2598 /* WMT event shouldn't be fragmented and the size should be 2599 * less than HCI_WMT_MAX_EVENT_SIZE. 2600 */ 2601 skb = bt_skb_alloc(HCI_WMT_MAX_EVENT_SIZE, GFP_ATOMIC); 2602 if (!skb) { 2603 hdev->stat.err_rx++; 2604 goto err_out; 2605 } 2606 2607 hci_skb_pkt_type(skb) = HCI_EVENT_PKT; 2608 skb_put_data(skb, urb->transfer_buffer, urb->actual_length); 2609 2610 hdr = (void *)skb->data; 2611 /* Fix up the vendor event id with 0xff for vendor specific 2612 * instead of 0xe4 so that event send via monitoring socket can 2613 * be parsed properly. 2614 */ 2615 hdr->evt = 0xff; 2616 2617 /* When someone waits for the WMT event, the skb is being cloned 2618 * and being processed the events from there then. 2619 */ 2620 if (test_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags)) { 2621 data->evt_skb = skb_clone(skb, GFP_ATOMIC); 2622 if (!data->evt_skb) 2623 goto err_out; 2624 } 2625 2626 err = hci_recv_frame(hdev, skb); 2627 if (err < 0) 2628 goto err_free_skb; 2629 2630 if (test_and_clear_bit(BTUSB_TX_WAIT_VND_EVT, 2631 &data->flags)) { 2632 /* Barrier to sync with other CPUs */ 2633 smp_mb__after_atomic(); 2634 wake_up_bit(&data->flags, 2635 BTUSB_TX_WAIT_VND_EVT); 2636 } 2637 err_out: 2638 return; 2639 err_free_skb: 2640 kfree_skb(data->evt_skb); 2641 data->evt_skb = NULL; 2642 return; 2643 } else if (urb->status == -ENOENT) { 2644 /* Avoid suspend failed when usb_kill_urb */ 2645 return; 2646 } 2647 2648 usb_mark_last_busy(data->udev); 2649 2650 /* The URB complete handler is still called with urb->actual_length = 0 2651 * when the event is not available, so we should keep re-submitting 2652 * URB until WMT event returns, Also, It's necessary to wait some time 2653 * between the two consecutive control URBs to relax the target device 2654 * to generate the event. Otherwise, the WMT event cannot return from 2655 * the device successfully. 2656 */ 2657 udelay(100); 2658 2659 usb_anchor_urb(urb, &data->ctrl_anchor); 2660 err = usb_submit_urb(urb, GFP_ATOMIC); 2661 if (err < 0) { 2662 /* -EPERM: urb is being killed; 2663 * -ENODEV: device got disconnected 2664 */ 2665 if (err != -EPERM && err != -ENODEV) 2666 bt_dev_err(hdev, "urb %p failed to resubmit (%d)", 2667 urb, -err); 2668 usb_unanchor_urb(urb); 2669 } 2670 } 2671 2672 static int btusb_mtk_submit_wmt_recv_urb(struct hci_dev *hdev) 2673 { 2674 struct btusb_data *data = hci_get_drvdata(hdev); 2675 struct usb_ctrlrequest *dr; 2676 unsigned char *buf; 2677 int err, size = 64; 2678 unsigned int pipe; 2679 struct urb *urb; 2680 2681 urb = usb_alloc_urb(0, GFP_KERNEL); 2682 if (!urb) 2683 return -ENOMEM; 2684 2685 dr = kmalloc(sizeof(*dr), GFP_KERNEL); 2686 if (!dr) { 2687 usb_free_urb(urb); 2688 return -ENOMEM; 2689 } 2690 2691 dr->bRequestType = USB_TYPE_VENDOR | USB_DIR_IN; 2692 dr->bRequest = 1; 2693 dr->wIndex = cpu_to_le16(0); 2694 dr->wValue = cpu_to_le16(48); 2695 dr->wLength = cpu_to_le16(size); 2696 2697 buf = kmalloc(size, GFP_KERNEL); 2698 if (!buf) { 2699 kfree(dr); 2700 return -ENOMEM; 2701 } 2702 2703 pipe = usb_rcvctrlpipe(data->udev, 0); 2704 2705 usb_fill_control_urb(urb, data->udev, pipe, (void *)dr, 2706 buf, size, btusb_mtk_wmt_recv, hdev); 2707 2708 urb->transfer_flags |= URB_FREE_BUFFER; 2709 2710 usb_anchor_urb(urb, &data->ctrl_anchor); 2711 err = usb_submit_urb(urb, GFP_KERNEL); 2712 if (err < 0) { 2713 if (err != -EPERM && err != -ENODEV) 2714 bt_dev_err(hdev, "urb %p submission failed (%d)", 2715 urb, -err); 2716 usb_unanchor_urb(urb); 2717 } 2718 2719 usb_free_urb(urb); 2720 2721 return err; 2722 } 2723 2724 static int btusb_mtk_hci_wmt_sync(struct hci_dev *hdev, 2725 struct btmtk_hci_wmt_params *wmt_params) 2726 { 2727 struct btusb_data *data = hci_get_drvdata(hdev); 2728 struct btmtk_hci_wmt_evt_funcc *wmt_evt_funcc; 2729 u32 hlen, status = BTMTK_WMT_INVALID; 2730 struct btmtk_hci_wmt_evt *wmt_evt; 2731 struct btmtk_hci_wmt_cmd wc; 2732 struct btmtk_wmt_hdr *hdr; 2733 int err; 2734 2735 /* Submit control IN URB on demand to process the WMT event */ 2736 err = btusb_mtk_submit_wmt_recv_urb(hdev); 2737 if (err < 0) 2738 return err; 2739 2740 /* Send the WMT command and wait until the WMT event returns */ 2741 hlen = sizeof(*hdr) + wmt_params->dlen; 2742 if (hlen > 255) 2743 return -EINVAL; 2744 2745 hdr = (struct btmtk_wmt_hdr *)&wc; 2746 hdr->dir = 1; 2747 hdr->op = wmt_params->op; 2748 hdr->dlen = cpu_to_le16(wmt_params->dlen + 1); 2749 hdr->flag = wmt_params->flag; 2750 memcpy(wc.data, wmt_params->data, wmt_params->dlen); 2751 2752 set_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags); 2753 2754 err = __hci_cmd_send(hdev, 0xfc6f, hlen, &wc); 2755 2756 if (err < 0) { 2757 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags); 2758 return err; 2759 } 2760 2761 /* The vendor specific WMT commands are all answered by a vendor 2762 * specific event and will have the Command Status or Command 2763 * Complete as with usual HCI command flow control. 2764 * 2765 * After sending the command, wait for BTUSB_TX_WAIT_VND_EVT 2766 * state to be cleared. The driver specific event receive routine 2767 * will clear that state and with that indicate completion of the 2768 * WMT command. 2769 */ 2770 err = wait_on_bit_timeout(&data->flags, BTUSB_TX_WAIT_VND_EVT, 2771 TASK_INTERRUPTIBLE, HCI_INIT_TIMEOUT); 2772 if (err == -EINTR) { 2773 bt_dev_err(hdev, "Execution of wmt command interrupted"); 2774 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags); 2775 return err; 2776 } 2777 2778 if (err) { 2779 bt_dev_err(hdev, "Execution of wmt command timed out"); 2780 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags); 2781 return -ETIMEDOUT; 2782 } 2783 2784 /* Parse and handle the return WMT event */ 2785 wmt_evt = (struct btmtk_hci_wmt_evt *)data->evt_skb->data; 2786 if (wmt_evt->whdr.op != hdr->op) { 2787 bt_dev_err(hdev, "Wrong op received %d expected %d", 2788 wmt_evt->whdr.op, hdr->op); 2789 err = -EIO; 2790 goto err_free_skb; 2791 } 2792 2793 switch (wmt_evt->whdr.op) { 2794 case BTMTK_WMT_SEMAPHORE: 2795 if (wmt_evt->whdr.flag == 2) 2796 status = BTMTK_WMT_PATCH_UNDONE; 2797 else 2798 status = BTMTK_WMT_PATCH_DONE; 2799 break; 2800 case BTMTK_WMT_FUNC_CTRL: 2801 wmt_evt_funcc = (struct btmtk_hci_wmt_evt_funcc *)wmt_evt; 2802 if (be16_to_cpu(wmt_evt_funcc->status) == 0x404) 2803 status = BTMTK_WMT_ON_DONE; 2804 else if (be16_to_cpu(wmt_evt_funcc->status) == 0x420) 2805 status = BTMTK_WMT_ON_PROGRESS; 2806 else 2807 status = BTMTK_WMT_ON_UNDONE; 2808 break; 2809 } 2810 2811 if (wmt_params->status) 2812 *wmt_params->status = status; 2813 2814 err_free_skb: 2815 kfree_skb(data->evt_skb); 2816 data->evt_skb = NULL; 2817 2818 return err; 2819 } 2820 2821 static int btusb_mtk_setup_firmware(struct hci_dev *hdev, const char *fwname) 2822 { 2823 struct btmtk_hci_wmt_params wmt_params; 2824 const struct firmware *fw; 2825 const u8 *fw_ptr; 2826 size_t fw_size; 2827 int err, dlen; 2828 u8 flag; 2829 2830 err = request_firmware(&fw, fwname, &hdev->dev); 2831 if (err < 0) { 2832 bt_dev_err(hdev, "Failed to load firmware file (%d)", err); 2833 return err; 2834 } 2835 2836 fw_ptr = fw->data; 2837 fw_size = fw->size; 2838 2839 /* The size of patch header is 30 bytes, should be skip */ 2840 if (fw_size < 30) { 2841 err = -EINVAL; 2842 goto err_release_fw; 2843 } 2844 2845 fw_size -= 30; 2846 fw_ptr += 30; 2847 flag = 1; 2848 2849 wmt_params.op = BTMTK_WMT_PATCH_DWNLD; 2850 wmt_params.status = NULL; 2851 2852 while (fw_size > 0) { 2853 dlen = min_t(int, 250, fw_size); 2854 2855 /* Tell deivice the position in sequence */ 2856 if (fw_size - dlen <= 0) 2857 flag = 3; 2858 else if (fw_size < fw->size - 30) 2859 flag = 2; 2860 2861 wmt_params.flag = flag; 2862 wmt_params.dlen = dlen; 2863 wmt_params.data = fw_ptr; 2864 2865 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params); 2866 if (err < 0) { 2867 bt_dev_err(hdev, "Failed to send wmt patch dwnld (%d)", 2868 err); 2869 goto err_release_fw; 2870 } 2871 2872 fw_size -= dlen; 2873 fw_ptr += dlen; 2874 } 2875 2876 wmt_params.op = BTMTK_WMT_RST; 2877 wmt_params.flag = 4; 2878 wmt_params.dlen = 0; 2879 wmt_params.data = NULL; 2880 wmt_params.status = NULL; 2881 2882 /* Activate funciton the firmware providing to */ 2883 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params); 2884 if (err < 0) { 2885 bt_dev_err(hdev, "Failed to send wmt rst (%d)", err); 2886 goto err_release_fw; 2887 } 2888 2889 /* Wait a few moments for firmware activation done */ 2890 usleep_range(10000, 12000); 2891 2892 err_release_fw: 2893 release_firmware(fw); 2894 2895 return err; 2896 } 2897 2898 static int btusb_mtk_func_query(struct hci_dev *hdev) 2899 { 2900 struct btmtk_hci_wmt_params wmt_params; 2901 int status, err; 2902 u8 param = 0; 2903 2904 /* Query whether the function is enabled */ 2905 wmt_params.op = BTMTK_WMT_FUNC_CTRL; 2906 wmt_params.flag = 4; 2907 wmt_params.dlen = sizeof(param); 2908 wmt_params.data = ¶m; 2909 wmt_params.status = &status; 2910 2911 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params); 2912 if (err < 0) { 2913 bt_dev_err(hdev, "Failed to query function status (%d)", err); 2914 return err; 2915 } 2916 2917 return status; 2918 } 2919 2920 static int btusb_mtk_reg_read(struct btusb_data *data, u32 reg, u32 *val) 2921 { 2922 int pipe, err, size = sizeof(u32); 2923 void *buf; 2924 2925 buf = kzalloc(size, GFP_KERNEL); 2926 if (!buf) 2927 return -ENOMEM; 2928 2929 pipe = usb_rcvctrlpipe(data->udev, 0); 2930 err = usb_control_msg(data->udev, pipe, 0x63, 2931 USB_TYPE_VENDOR | USB_DIR_IN, 2932 reg >> 16, reg & 0xffff, 2933 buf, size, USB_CTRL_SET_TIMEOUT); 2934 if (err < 0) 2935 goto err_free_buf; 2936 2937 *val = get_unaligned_le32(buf); 2938 2939 err_free_buf: 2940 kfree(buf); 2941 2942 return err; 2943 } 2944 2945 static int btusb_mtk_id_get(struct btusb_data *data, u32 *id) 2946 { 2947 return btusb_mtk_reg_read(data, 0x80000008, id); 2948 } 2949 2950 static int btusb_mtk_setup(struct hci_dev *hdev) 2951 { 2952 struct btusb_data *data = hci_get_drvdata(hdev); 2953 struct btmtk_hci_wmt_params wmt_params; 2954 ktime_t calltime, delta, rettime; 2955 struct btmtk_tci_sleep tci_sleep; 2956 unsigned long long duration; 2957 struct sk_buff *skb; 2958 const char *fwname; 2959 int err, status; 2960 u32 dev_id; 2961 u8 param; 2962 2963 calltime = ktime_get(); 2964 2965 err = btusb_mtk_id_get(data, &dev_id); 2966 if (err < 0) { 2967 bt_dev_err(hdev, "Failed to get device id (%d)", err); 2968 return err; 2969 } 2970 2971 switch (dev_id) { 2972 case 0x7663: 2973 fwname = FIRMWARE_MT7663; 2974 break; 2975 case 0x7668: 2976 fwname = FIRMWARE_MT7668; 2977 break; 2978 default: 2979 bt_dev_err(hdev, "Unsupported support hardware variant (%08x)", 2980 dev_id); 2981 return -ENODEV; 2982 } 2983 2984 /* Query whether the firmware is already download */ 2985 wmt_params.op = BTMTK_WMT_SEMAPHORE; 2986 wmt_params.flag = 1; 2987 wmt_params.dlen = 0; 2988 wmt_params.data = NULL; 2989 wmt_params.status = &status; 2990 2991 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params); 2992 if (err < 0) { 2993 bt_dev_err(hdev, "Failed to query firmware status (%d)", err); 2994 return err; 2995 } 2996 2997 if (status == BTMTK_WMT_PATCH_DONE) { 2998 bt_dev_info(hdev, "firmware already downloaded"); 2999 goto ignore_setup_fw; 3000 } 3001 3002 /* Setup a firmware which the device definitely requires */ 3003 err = btusb_mtk_setup_firmware(hdev, fwname); 3004 if (err < 0) 3005 return err; 3006 3007 ignore_setup_fw: 3008 err = readx_poll_timeout(btusb_mtk_func_query, hdev, status, 3009 status < 0 || status != BTMTK_WMT_ON_PROGRESS, 3010 2000, 5000000); 3011 /* -ETIMEDOUT happens */ 3012 if (err < 0) 3013 return err; 3014 3015 /* The other errors happen in btusb_mtk_func_query */ 3016 if (status < 0) 3017 return status; 3018 3019 if (status == BTMTK_WMT_ON_DONE) { 3020 bt_dev_info(hdev, "function already on"); 3021 goto ignore_func_on; 3022 } 3023 3024 /* Enable Bluetooth protocol */ 3025 param = 1; 3026 wmt_params.op = BTMTK_WMT_FUNC_CTRL; 3027 wmt_params.flag = 0; 3028 wmt_params.dlen = sizeof(param); 3029 wmt_params.data = ¶m; 3030 wmt_params.status = NULL; 3031 3032 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params); 3033 if (err < 0) { 3034 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err); 3035 return err; 3036 } 3037 3038 ignore_func_on: 3039 /* Apply the low power environment setup */ 3040 tci_sleep.mode = 0x5; 3041 tci_sleep.duration = cpu_to_le16(0x640); 3042 tci_sleep.host_duration = cpu_to_le16(0x640); 3043 tci_sleep.host_wakeup_pin = 0; 3044 tci_sleep.time_compensation = 0; 3045 3046 skb = __hci_cmd_sync(hdev, 0xfc7a, sizeof(tci_sleep), &tci_sleep, 3047 HCI_INIT_TIMEOUT); 3048 if (IS_ERR(skb)) { 3049 err = PTR_ERR(skb); 3050 bt_dev_err(hdev, "Failed to apply low power setting (%d)", err); 3051 return err; 3052 } 3053 kfree_skb(skb); 3054 3055 rettime = ktime_get(); 3056 delta = ktime_sub(rettime, calltime); 3057 duration = (unsigned long long)ktime_to_ns(delta) >> 10; 3058 3059 bt_dev_info(hdev, "Device setup in %llu usecs", duration); 3060 3061 return 0; 3062 } 3063 3064 static int btusb_mtk_shutdown(struct hci_dev *hdev) 3065 { 3066 struct btmtk_hci_wmt_params wmt_params; 3067 u8 param = 0; 3068 int err; 3069 3070 /* Disable the device */ 3071 wmt_params.op = BTMTK_WMT_FUNC_CTRL; 3072 wmt_params.flag = 0; 3073 wmt_params.dlen = sizeof(param); 3074 wmt_params.data = ¶m; 3075 wmt_params.status = NULL; 3076 3077 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params); 3078 if (err < 0) { 3079 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err); 3080 return err; 3081 } 3082 3083 return 0; 3084 } 3085 3086 MODULE_FIRMWARE(FIRMWARE_MT7663); 3087 MODULE_FIRMWARE(FIRMWARE_MT7668); 3088 3089 #ifdef CONFIG_PM 3090 /* Configure an out-of-band gpio as wake-up pin, if specified in device tree */ 3091 static int marvell_config_oob_wake(struct hci_dev *hdev) 3092 { 3093 struct sk_buff *skb; 3094 struct btusb_data *data = hci_get_drvdata(hdev); 3095 struct device *dev = &data->udev->dev; 3096 u16 pin, gap, opcode; 3097 int ret; 3098 u8 cmd[5]; 3099 3100 /* Move on if no wakeup pin specified */ 3101 if (of_property_read_u16(dev->of_node, "marvell,wakeup-pin", &pin) || 3102 of_property_read_u16(dev->of_node, "marvell,wakeup-gap-ms", &gap)) 3103 return 0; 3104 3105 /* Vendor specific command to configure a GPIO as wake-up pin */ 3106 opcode = hci_opcode_pack(0x3F, 0x59); 3107 cmd[0] = opcode & 0xFF; 3108 cmd[1] = opcode >> 8; 3109 cmd[2] = 2; /* length of parameters that follow */ 3110 cmd[3] = pin; 3111 cmd[4] = gap; /* time in ms, for which wakeup pin should be asserted */ 3112 3113 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL); 3114 if (!skb) { 3115 bt_dev_err(hdev, "%s: No memory\n", __func__); 3116 return -ENOMEM; 3117 } 3118 3119 skb_put_data(skb, cmd, sizeof(cmd)); 3120 hci_skb_pkt_type(skb) = HCI_COMMAND_PKT; 3121 3122 ret = btusb_send_frame(hdev, skb); 3123 if (ret) { 3124 bt_dev_err(hdev, "%s: configuration failed\n", __func__); 3125 kfree_skb(skb); 3126 return ret; 3127 } 3128 3129 return 0; 3130 } 3131 #endif 3132 3133 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev, 3134 const bdaddr_t *bdaddr) 3135 { 3136 struct sk_buff *skb; 3137 u8 buf[8]; 3138 long ret; 3139 3140 buf[0] = 0xfe; 3141 buf[1] = sizeof(bdaddr_t); 3142 memcpy(buf + 2, bdaddr, sizeof(bdaddr_t)); 3143 3144 skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT); 3145 if (IS_ERR(skb)) { 3146 ret = PTR_ERR(skb); 3147 bt_dev_err(hdev, "changing Marvell device address failed (%ld)", 3148 ret); 3149 return ret; 3150 } 3151 kfree_skb(skb); 3152 3153 return 0; 3154 } 3155 3156 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev, 3157 const bdaddr_t *bdaddr) 3158 { 3159 struct sk_buff *skb; 3160 u8 buf[10]; 3161 long ret; 3162 3163 buf[0] = 0x01; 3164 buf[1] = 0x01; 3165 buf[2] = 0x00; 3166 buf[3] = sizeof(bdaddr_t); 3167 memcpy(buf + 4, bdaddr, sizeof(bdaddr_t)); 3168 3169 skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT); 3170 if (IS_ERR(skb)) { 3171 ret = PTR_ERR(skb); 3172 bt_dev_err(hdev, "Change address command failed (%ld)", ret); 3173 return ret; 3174 } 3175 kfree_skb(skb); 3176 3177 return 0; 3178 } 3179 3180 #define QCA_DFU_PACKET_LEN 4096 3181 3182 #define QCA_GET_TARGET_VERSION 0x09 3183 #define QCA_CHECK_STATUS 0x05 3184 #define QCA_DFU_DOWNLOAD 0x01 3185 3186 #define QCA_SYSCFG_UPDATED 0x40 3187 #define QCA_PATCH_UPDATED 0x80 3188 #define QCA_DFU_TIMEOUT 3000 3189 3190 struct qca_version { 3191 __le32 rom_version; 3192 __le32 patch_version; 3193 __le32 ram_version; 3194 __le32 ref_clock; 3195 __u8 reserved[4]; 3196 } __packed; 3197 3198 struct qca_rampatch_version { 3199 __le16 rom_version; 3200 __le16 patch_version; 3201 } __packed; 3202 3203 struct qca_device_info { 3204 u32 rom_version; 3205 u8 rampatch_hdr; /* length of header in rampatch */ 3206 u8 nvm_hdr; /* length of header in NVM */ 3207 u8 ver_offset; /* offset of version structure in rampatch */ 3208 }; 3209 3210 static const struct qca_device_info qca_devices_table[] = { 3211 { 0x00000100, 20, 4, 10 }, /* Rome 1.0 */ 3212 { 0x00000101, 20, 4, 10 }, /* Rome 1.1 */ 3213 { 0x00000200, 28, 4, 18 }, /* Rome 2.0 */ 3214 { 0x00000201, 28, 4, 18 }, /* Rome 2.1 */ 3215 { 0x00000300, 28, 4, 18 }, /* Rome 3.0 */ 3216 { 0x00000302, 28, 4, 18 }, /* Rome 3.2 */ 3217 }; 3218 3219 static int btusb_qca_send_vendor_req(struct usb_device *udev, u8 request, 3220 void *data, u16 size) 3221 { 3222 int pipe, err; 3223 u8 *buf; 3224 3225 buf = kmalloc(size, GFP_KERNEL); 3226 if (!buf) 3227 return -ENOMEM; 3228 3229 /* Found some of USB hosts have IOT issues with ours so that we should 3230 * not wait until HCI layer is ready. 3231 */ 3232 pipe = usb_rcvctrlpipe(udev, 0); 3233 err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN, 3234 0, 0, buf, size, USB_CTRL_SET_TIMEOUT); 3235 if (err < 0) { 3236 dev_err(&udev->dev, "Failed to access otp area (%d)", err); 3237 goto done; 3238 } 3239 3240 memcpy(data, buf, size); 3241 3242 done: 3243 kfree(buf); 3244 3245 return err; 3246 } 3247 3248 static int btusb_setup_qca_download_fw(struct hci_dev *hdev, 3249 const struct firmware *firmware, 3250 size_t hdr_size) 3251 { 3252 struct btusb_data *btdata = hci_get_drvdata(hdev); 3253 struct usb_device *udev = btdata->udev; 3254 size_t count, size, sent = 0; 3255 int pipe, len, err; 3256 u8 *buf; 3257 3258 buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL); 3259 if (!buf) 3260 return -ENOMEM; 3261 3262 count = firmware->size; 3263 3264 size = min_t(size_t, count, hdr_size); 3265 memcpy(buf, firmware->data, size); 3266 3267 /* USB patches should go down to controller through USB path 3268 * because binary format fits to go down through USB channel. 3269 * USB control path is for patching headers and USB bulk is for 3270 * patch body. 3271 */ 3272 pipe = usb_sndctrlpipe(udev, 0); 3273 err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR, 3274 0, 0, buf, size, USB_CTRL_SET_TIMEOUT); 3275 if (err < 0) { 3276 bt_dev_err(hdev, "Failed to send headers (%d)", err); 3277 goto done; 3278 } 3279 3280 sent += size; 3281 count -= size; 3282 3283 while (count) { 3284 size = min_t(size_t, count, QCA_DFU_PACKET_LEN); 3285 3286 memcpy(buf, firmware->data + sent, size); 3287 3288 pipe = usb_sndbulkpipe(udev, 0x02); 3289 err = usb_bulk_msg(udev, pipe, buf, size, &len, 3290 QCA_DFU_TIMEOUT); 3291 if (err < 0) { 3292 bt_dev_err(hdev, "Failed to send body at %zd of %zd (%d)", 3293 sent, firmware->size, err); 3294 break; 3295 } 3296 3297 if (size != len) { 3298 bt_dev_err(hdev, "Failed to get bulk buffer"); 3299 err = -EILSEQ; 3300 break; 3301 } 3302 3303 sent += size; 3304 count -= size; 3305 } 3306 3307 done: 3308 kfree(buf); 3309 return err; 3310 } 3311 3312 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev, 3313 struct qca_version *ver, 3314 const struct qca_device_info *info) 3315 { 3316 struct qca_rampatch_version *rver; 3317 const struct firmware *fw; 3318 u32 ver_rom, ver_patch; 3319 u16 rver_rom, rver_patch; 3320 char fwname[64]; 3321 int err; 3322 3323 ver_rom = le32_to_cpu(ver->rom_version); 3324 ver_patch = le32_to_cpu(ver->patch_version); 3325 3326 snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom); 3327 3328 err = request_firmware(&fw, fwname, &hdev->dev); 3329 if (err) { 3330 bt_dev_err(hdev, "failed to request rampatch file: %s (%d)", 3331 fwname, err); 3332 return err; 3333 } 3334 3335 bt_dev_info(hdev, "using rampatch file: %s", fwname); 3336 3337 rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset); 3338 rver_rom = le16_to_cpu(rver->rom_version); 3339 rver_patch = le16_to_cpu(rver->patch_version); 3340 3341 bt_dev_info(hdev, "QCA: patch rome 0x%x build 0x%x, " 3342 "firmware rome 0x%x build 0x%x", 3343 rver_rom, rver_patch, ver_rom, ver_patch); 3344 3345 if (rver_rom != ver_rom || rver_patch <= ver_patch) { 3346 bt_dev_err(hdev, "rampatch file version did not match with firmware"); 3347 err = -EINVAL; 3348 goto done; 3349 } 3350 3351 err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr); 3352 3353 done: 3354 release_firmware(fw); 3355 3356 return err; 3357 } 3358 3359 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev, 3360 struct qca_version *ver, 3361 const struct qca_device_info *info) 3362 { 3363 const struct firmware *fw; 3364 char fwname[64]; 3365 int err; 3366 3367 snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x.bin", 3368 le32_to_cpu(ver->rom_version)); 3369 3370 err = request_firmware(&fw, fwname, &hdev->dev); 3371 if (err) { 3372 bt_dev_err(hdev, "failed to request NVM file: %s (%d)", 3373 fwname, err); 3374 return err; 3375 } 3376 3377 bt_dev_info(hdev, "using NVM file: %s", fwname); 3378 3379 err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr); 3380 3381 release_firmware(fw); 3382 3383 return err; 3384 } 3385 3386 /* identify the ROM version and check whether patches are needed */ 3387 static bool btusb_qca_need_patch(struct usb_device *udev) 3388 { 3389 struct qca_version ver; 3390 3391 if (btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver, 3392 sizeof(ver)) < 0) 3393 return false; 3394 /* only low ROM versions need patches */ 3395 return !(le32_to_cpu(ver.rom_version) & ~0xffffU); 3396 } 3397 3398 static int btusb_setup_qca(struct hci_dev *hdev) 3399 { 3400 struct btusb_data *btdata = hci_get_drvdata(hdev); 3401 struct usb_device *udev = btdata->udev; 3402 const struct qca_device_info *info = NULL; 3403 struct qca_version ver; 3404 u32 ver_rom; 3405 u8 status; 3406 int i, err; 3407 3408 err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver, 3409 sizeof(ver)); 3410 if (err < 0) 3411 return err; 3412 3413 ver_rom = le32_to_cpu(ver.rom_version); 3414 /* Don't care about high ROM versions */ 3415 if (ver_rom & ~0xffffU) 3416 return 0; 3417 3418 for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) { 3419 if (ver_rom == qca_devices_table[i].rom_version) 3420 info = &qca_devices_table[i]; 3421 } 3422 if (!info) { 3423 bt_dev_err(hdev, "don't support firmware rome 0x%x", ver_rom); 3424 return -ENODEV; 3425 } 3426 3427 err = btusb_qca_send_vendor_req(udev, QCA_CHECK_STATUS, &status, 3428 sizeof(status)); 3429 if (err < 0) 3430 return err; 3431 3432 if (!(status & QCA_PATCH_UPDATED)) { 3433 err = btusb_setup_qca_load_rampatch(hdev, &ver, info); 3434 if (err < 0) 3435 return err; 3436 } 3437 3438 if (!(status & QCA_SYSCFG_UPDATED)) { 3439 err = btusb_setup_qca_load_nvm(hdev, &ver, info); 3440 if (err < 0) 3441 return err; 3442 } 3443 3444 return 0; 3445 } 3446 3447 static inline int __set_diag_interface(struct hci_dev *hdev) 3448 { 3449 struct btusb_data *data = hci_get_drvdata(hdev); 3450 struct usb_interface *intf = data->diag; 3451 int i; 3452 3453 if (!data->diag) 3454 return -ENODEV; 3455 3456 data->diag_tx_ep = NULL; 3457 data->diag_rx_ep = NULL; 3458 3459 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { 3460 struct usb_endpoint_descriptor *ep_desc; 3461 3462 ep_desc = &intf->cur_altsetting->endpoint[i].desc; 3463 3464 if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) { 3465 data->diag_tx_ep = ep_desc; 3466 continue; 3467 } 3468 3469 if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) { 3470 data->diag_rx_ep = ep_desc; 3471 continue; 3472 } 3473 } 3474 3475 if (!data->diag_tx_ep || !data->diag_rx_ep) { 3476 bt_dev_err(hdev, "invalid diagnostic descriptors"); 3477 return -ENODEV; 3478 } 3479 3480 return 0; 3481 } 3482 3483 static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable) 3484 { 3485 struct btusb_data *data = hci_get_drvdata(hdev); 3486 struct sk_buff *skb; 3487 struct urb *urb; 3488 unsigned int pipe; 3489 3490 if (!data->diag_tx_ep) 3491 return ERR_PTR(-ENODEV); 3492 3493 urb = usb_alloc_urb(0, GFP_KERNEL); 3494 if (!urb) 3495 return ERR_PTR(-ENOMEM); 3496 3497 skb = bt_skb_alloc(2, GFP_KERNEL); 3498 if (!skb) { 3499 usb_free_urb(urb); 3500 return ERR_PTR(-ENOMEM); 3501 } 3502 3503 skb_put_u8(skb, 0xf0); 3504 skb_put_u8(skb, enable); 3505 3506 pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress); 3507 3508 usb_fill_bulk_urb(urb, data->udev, pipe, 3509 skb->data, skb->len, btusb_tx_complete, skb); 3510 3511 skb->dev = (void *)hdev; 3512 3513 return urb; 3514 } 3515 3516 static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable) 3517 { 3518 struct btusb_data *data = hci_get_drvdata(hdev); 3519 struct urb *urb; 3520 3521 if (!data->diag) 3522 return -ENODEV; 3523 3524 if (!test_bit(HCI_RUNNING, &hdev->flags)) 3525 return -ENETDOWN; 3526 3527 urb = alloc_diag_urb(hdev, enable); 3528 if (IS_ERR(urb)) 3529 return PTR_ERR(urb); 3530 3531 return submit_or_queue_tx_urb(hdev, urb); 3532 } 3533 3534 #ifdef CONFIG_PM 3535 static irqreturn_t btusb_oob_wake_handler(int irq, void *priv) 3536 { 3537 struct btusb_data *data = priv; 3538 3539 pm_wakeup_event(&data->udev->dev, 0); 3540 pm_system_wakeup(); 3541 3542 /* Disable only if not already disabled (keep it balanced) */ 3543 if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) { 3544 disable_irq_nosync(irq); 3545 disable_irq_wake(irq); 3546 } 3547 return IRQ_HANDLED; 3548 } 3549 3550 static const struct of_device_id btusb_match_table[] = { 3551 { .compatible = "usb1286,204e" }, 3552 { .compatible = "usbcf3,e300" }, /* QCA6174A */ 3553 { .compatible = "usb4ca,301a" }, /* QCA6174A (Lite-On) */ 3554 { } 3555 }; 3556 MODULE_DEVICE_TABLE(of, btusb_match_table); 3557 3558 /* Use an oob wakeup pin? */ 3559 static int btusb_config_oob_wake(struct hci_dev *hdev) 3560 { 3561 struct btusb_data *data = hci_get_drvdata(hdev); 3562 struct device *dev = &data->udev->dev; 3563 int irq, ret; 3564 3565 clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags); 3566 3567 if (!of_match_device(btusb_match_table, dev)) 3568 return 0; 3569 3570 /* Move on if no IRQ specified */ 3571 irq = of_irq_get_byname(dev->of_node, "wakeup"); 3572 if (irq <= 0) { 3573 bt_dev_dbg(hdev, "%s: no OOB Wakeup IRQ in DT", __func__); 3574 return 0; 3575 } 3576 3577 irq_set_status_flags(irq, IRQ_NOAUTOEN); 3578 ret = devm_request_irq(&hdev->dev, irq, btusb_oob_wake_handler, 3579 0, "OOB Wake-on-BT", data); 3580 if (ret) { 3581 bt_dev_err(hdev, "%s: IRQ request failed", __func__); 3582 return ret; 3583 } 3584 3585 ret = device_init_wakeup(dev, true); 3586 if (ret) { 3587 bt_dev_err(hdev, "%s: failed to init_wakeup", __func__); 3588 return ret; 3589 } 3590 3591 data->oob_wake_irq = irq; 3592 bt_dev_info(hdev, "OOB Wake-on-BT configured at IRQ %u", irq); 3593 return 0; 3594 } 3595 #endif 3596 3597 static void btusb_check_needs_reset_resume(struct usb_interface *intf) 3598 { 3599 if (dmi_check_system(btusb_needs_reset_resume_table)) 3600 interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME; 3601 } 3602 3603 static int btusb_probe(struct usb_interface *intf, 3604 const struct usb_device_id *id) 3605 { 3606 struct usb_endpoint_descriptor *ep_desc; 3607 struct gpio_desc *reset_gpio; 3608 struct btusb_data *data; 3609 struct hci_dev *hdev; 3610 unsigned ifnum_base; 3611 int i, err; 3612 3613 BT_DBG("intf %p id %p", intf, id); 3614 3615 /* interface numbers are hardcoded in the spec */ 3616 if (intf->cur_altsetting->desc.bInterfaceNumber != 0) { 3617 if (!(id->driver_info & BTUSB_IFNUM_2)) 3618 return -ENODEV; 3619 if (intf->cur_altsetting->desc.bInterfaceNumber != 2) 3620 return -ENODEV; 3621 } 3622 3623 ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber; 3624 3625 if (!id->driver_info) { 3626 const struct usb_device_id *match; 3627 3628 match = usb_match_id(intf, blacklist_table); 3629 if (match) 3630 id = match; 3631 } 3632 3633 if (id->driver_info == BTUSB_IGNORE) 3634 return -ENODEV; 3635 3636 if (id->driver_info & BTUSB_ATH3012) { 3637 struct usb_device *udev = interface_to_usbdev(intf); 3638 3639 /* Old firmware would otherwise let ath3k driver load 3640 * patch and sysconfig files 3641 */ 3642 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001 && 3643 !btusb_qca_need_patch(udev)) 3644 return -ENODEV; 3645 } 3646 3647 data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL); 3648 if (!data) 3649 return -ENOMEM; 3650 3651 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { 3652 ep_desc = &intf->cur_altsetting->endpoint[i].desc; 3653 3654 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) { 3655 data->intr_ep = ep_desc; 3656 continue; 3657 } 3658 3659 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) { 3660 data->bulk_tx_ep = ep_desc; 3661 continue; 3662 } 3663 3664 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) { 3665 data->bulk_rx_ep = ep_desc; 3666 continue; 3667 } 3668 } 3669 3670 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) 3671 return -ENODEV; 3672 3673 if (id->driver_info & BTUSB_AMP) { 3674 data->cmdreq_type = USB_TYPE_CLASS | 0x01; 3675 data->cmdreq = 0x2b; 3676 } else { 3677 data->cmdreq_type = USB_TYPE_CLASS; 3678 data->cmdreq = 0x00; 3679 } 3680 3681 data->udev = interface_to_usbdev(intf); 3682 data->intf = intf; 3683 3684 INIT_WORK(&data->work, btusb_work); 3685 INIT_WORK(&data->waker, btusb_waker); 3686 init_usb_anchor(&data->deferred); 3687 init_usb_anchor(&data->tx_anchor); 3688 spin_lock_init(&data->txlock); 3689 3690 init_usb_anchor(&data->intr_anchor); 3691 init_usb_anchor(&data->bulk_anchor); 3692 init_usb_anchor(&data->isoc_anchor); 3693 init_usb_anchor(&data->diag_anchor); 3694 init_usb_anchor(&data->ctrl_anchor); 3695 spin_lock_init(&data->rxlock); 3696 3697 if (id->driver_info & BTUSB_INTEL_NEW) { 3698 data->recv_event = btusb_recv_event_intel; 3699 data->recv_bulk = btusb_recv_bulk_intel; 3700 set_bit(BTUSB_BOOTLOADER, &data->flags); 3701 } else { 3702 data->recv_event = hci_recv_frame; 3703 data->recv_bulk = btusb_recv_bulk; 3704 } 3705 3706 hdev = hci_alloc_dev(); 3707 if (!hdev) 3708 return -ENOMEM; 3709 3710 hdev->bus = HCI_USB; 3711 hci_set_drvdata(hdev, data); 3712 3713 if (id->driver_info & BTUSB_AMP) 3714 hdev->dev_type = HCI_AMP; 3715 else 3716 hdev->dev_type = HCI_PRIMARY; 3717 3718 data->hdev = hdev; 3719 3720 SET_HCIDEV_DEV(hdev, &intf->dev); 3721 3722 reset_gpio = gpiod_get_optional(&data->udev->dev, "reset", 3723 GPIOD_OUT_LOW); 3724 if (IS_ERR(reset_gpio)) { 3725 err = PTR_ERR(reset_gpio); 3726 goto out_free_dev; 3727 } else if (reset_gpio) { 3728 data->reset_gpio = reset_gpio; 3729 } 3730 3731 hdev->open = btusb_open; 3732 hdev->close = btusb_close; 3733 hdev->flush = btusb_flush; 3734 hdev->send = btusb_send_frame; 3735 hdev->notify = btusb_notify; 3736 3737 #ifdef CONFIG_PM 3738 err = btusb_config_oob_wake(hdev); 3739 if (err) 3740 goto out_free_dev; 3741 3742 /* Marvell devices may need a specific chip configuration */ 3743 if (id->driver_info & BTUSB_MARVELL && data->oob_wake_irq) { 3744 err = marvell_config_oob_wake(hdev); 3745 if (err) 3746 goto out_free_dev; 3747 } 3748 #endif 3749 if (id->driver_info & BTUSB_CW6622) 3750 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks); 3751 3752 if (id->driver_info & BTUSB_BCM2045) 3753 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks); 3754 3755 if (id->driver_info & BTUSB_BCM92035) 3756 hdev->setup = btusb_setup_bcm92035; 3757 3758 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) && 3759 (id->driver_info & BTUSB_BCM_PATCHRAM)) { 3760 hdev->manufacturer = 15; 3761 hdev->setup = btbcm_setup_patchram; 3762 hdev->set_diag = btusb_bcm_set_diag; 3763 hdev->set_bdaddr = btbcm_set_bdaddr; 3764 3765 /* Broadcom LM_DIAG Interface numbers are hardcoded */ 3766 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2); 3767 } 3768 3769 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) && 3770 (id->driver_info & BTUSB_BCM_APPLE)) { 3771 hdev->manufacturer = 15; 3772 hdev->setup = btbcm_setup_apple; 3773 hdev->set_diag = btusb_bcm_set_diag; 3774 3775 /* Broadcom LM_DIAG Interface numbers are hardcoded */ 3776 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2); 3777 } 3778 3779 if (id->driver_info & BTUSB_INTEL) { 3780 hdev->manufacturer = 2; 3781 hdev->setup = btusb_setup_intel; 3782 hdev->shutdown = btusb_shutdown_intel; 3783 hdev->set_diag = btintel_set_diag_mfg; 3784 hdev->set_bdaddr = btintel_set_bdaddr; 3785 hdev->cmd_timeout = btusb_intel_cmd_timeout; 3786 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks); 3787 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); 3788 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks); 3789 } 3790 3791 if (id->driver_info & BTUSB_INTEL_NEW) { 3792 hdev->manufacturer = 2; 3793 hdev->send = btusb_send_frame_intel; 3794 hdev->setup = btusb_setup_intel_new; 3795 hdev->shutdown = btusb_shutdown_intel_new; 3796 hdev->hw_error = btintel_hw_error; 3797 hdev->set_diag = btintel_set_diag; 3798 hdev->set_bdaddr = btintel_set_bdaddr; 3799 hdev->cmd_timeout = btusb_intel_cmd_timeout; 3800 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks); 3801 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); 3802 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks); 3803 } 3804 3805 if (id->driver_info & BTUSB_MARVELL) 3806 hdev->set_bdaddr = btusb_set_bdaddr_marvell; 3807 3808 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_MTK) && 3809 (id->driver_info & BTUSB_MEDIATEK)) { 3810 hdev->setup = btusb_mtk_setup; 3811 hdev->shutdown = btusb_mtk_shutdown; 3812 hdev->manufacturer = 70; 3813 set_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks); 3814 } 3815 3816 if (id->driver_info & BTUSB_SWAVE) { 3817 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks); 3818 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks); 3819 } 3820 3821 if (id->driver_info & BTUSB_INTEL_BOOT) { 3822 hdev->manufacturer = 2; 3823 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks); 3824 } 3825 3826 if (id->driver_info & BTUSB_ATH3012) { 3827 data->setup_on_usb = btusb_setup_qca; 3828 hdev->set_bdaddr = btusb_set_bdaddr_ath3012; 3829 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); 3830 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks); 3831 } 3832 3833 if (id->driver_info & BTUSB_QCA_ROME) { 3834 data->setup_on_usb = btusb_setup_qca; 3835 hdev->set_bdaddr = btusb_set_bdaddr_ath3012; 3836 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); 3837 btusb_check_needs_reset_resume(intf); 3838 } 3839 3840 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_RTL) && 3841 (id->driver_info & BTUSB_REALTEK)) { 3842 hdev->setup = btrtl_setup_realtek; 3843 hdev->shutdown = btrtl_shutdown_realtek; 3844 hdev->cmd_timeout = btusb_rtl_cmd_timeout; 3845 3846 /* Realtek devices lose their updated firmware over global 3847 * suspend that means host doesn't send SET_FEATURE 3848 * (DEVICE_REMOTE_WAKEUP) 3849 */ 3850 set_bit(BTUSB_WAKEUP_DISABLE, &data->flags); 3851 3852 err = usb_autopm_get_interface(intf); 3853 if (err < 0) 3854 goto out_free_dev; 3855 } 3856 3857 if (id->driver_info & BTUSB_AMP) { 3858 /* AMP controllers do not support SCO packets */ 3859 data->isoc = NULL; 3860 } else { 3861 /* Interface orders are hardcoded in the specification */ 3862 data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1); 3863 data->isoc_ifnum = ifnum_base + 1; 3864 } 3865 3866 if (!reset) 3867 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); 3868 3869 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) { 3870 if (!disable_scofix) 3871 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks); 3872 } 3873 3874 if (id->driver_info & BTUSB_BROKEN_ISOC) 3875 data->isoc = NULL; 3876 3877 if (id->driver_info & BTUSB_WIDEBAND_SPEECH) 3878 set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED, &hdev->quirks); 3879 3880 if (id->driver_info & BTUSB_DIGIANSWER) { 3881 data->cmdreq_type = USB_TYPE_VENDOR; 3882 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); 3883 } 3884 3885 if (id->driver_info & BTUSB_CSR) { 3886 struct usb_device *udev = data->udev; 3887 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice); 3888 3889 /* Old firmware would otherwise execute USB reset */ 3890 if (bcdDevice < 0x117) 3891 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); 3892 3893 /* Fake CSR devices with broken commands */ 3894 if (bcdDevice <= 0x100 || bcdDevice == 0x134) 3895 hdev->setup = btusb_setup_csr; 3896 3897 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); 3898 } 3899 3900 if (id->driver_info & BTUSB_SNIFFER) { 3901 struct usb_device *udev = data->udev; 3902 3903 /* New sniffer firmware has crippled HCI interface */ 3904 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997) 3905 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks); 3906 } 3907 3908 if (id->driver_info & BTUSB_INTEL_BOOT) { 3909 /* A bug in the bootloader causes that interrupt interface is 3910 * only enabled after receiving SetInterface(0, AltSetting=0). 3911 */ 3912 err = usb_set_interface(data->udev, 0, 0); 3913 if (err < 0) { 3914 BT_ERR("failed to set interface 0, alt 0 %d", err); 3915 goto out_free_dev; 3916 } 3917 } 3918 3919 if (data->isoc) { 3920 err = usb_driver_claim_interface(&btusb_driver, 3921 data->isoc, data); 3922 if (err < 0) 3923 goto out_free_dev; 3924 } 3925 3926 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) && data->diag) { 3927 if (!usb_driver_claim_interface(&btusb_driver, 3928 data->diag, data)) 3929 __set_diag_interface(hdev); 3930 else 3931 data->diag = NULL; 3932 } 3933 3934 if (enable_autosuspend) 3935 usb_enable_autosuspend(data->udev); 3936 3937 err = hci_register_dev(hdev); 3938 if (err < 0) 3939 goto out_free_dev; 3940 3941 usb_set_intfdata(intf, data); 3942 3943 return 0; 3944 3945 out_free_dev: 3946 if (data->reset_gpio) 3947 gpiod_put(data->reset_gpio); 3948 hci_free_dev(hdev); 3949 return err; 3950 } 3951 3952 static void btusb_disconnect(struct usb_interface *intf) 3953 { 3954 struct btusb_data *data = usb_get_intfdata(intf); 3955 struct hci_dev *hdev; 3956 3957 BT_DBG("intf %p", intf); 3958 3959 if (!data) 3960 return; 3961 3962 hdev = data->hdev; 3963 usb_set_intfdata(data->intf, NULL); 3964 3965 if (data->isoc) 3966 usb_set_intfdata(data->isoc, NULL); 3967 3968 if (data->diag) 3969 usb_set_intfdata(data->diag, NULL); 3970 3971 hci_unregister_dev(hdev); 3972 3973 if (intf == data->intf) { 3974 if (data->isoc) 3975 usb_driver_release_interface(&btusb_driver, data->isoc); 3976 if (data->diag) 3977 usb_driver_release_interface(&btusb_driver, data->diag); 3978 } else if (intf == data->isoc) { 3979 if (data->diag) 3980 usb_driver_release_interface(&btusb_driver, data->diag); 3981 usb_driver_release_interface(&btusb_driver, data->intf); 3982 } else if (intf == data->diag) { 3983 usb_driver_release_interface(&btusb_driver, data->intf); 3984 if (data->isoc) 3985 usb_driver_release_interface(&btusb_driver, data->isoc); 3986 } 3987 3988 if (data->oob_wake_irq) 3989 device_init_wakeup(&data->udev->dev, false); 3990 3991 if (data->reset_gpio) 3992 gpiod_put(data->reset_gpio); 3993 3994 hci_free_dev(hdev); 3995 } 3996 3997 #ifdef CONFIG_PM 3998 static int btusb_suspend(struct usb_interface *intf, pm_message_t message) 3999 { 4000 struct btusb_data *data = usb_get_intfdata(intf); 4001 4002 BT_DBG("intf %p", intf); 4003 4004 if (data->suspend_count++) 4005 return 0; 4006 4007 spin_lock_irq(&data->txlock); 4008 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) { 4009 set_bit(BTUSB_SUSPENDING, &data->flags); 4010 spin_unlock_irq(&data->txlock); 4011 } else { 4012 spin_unlock_irq(&data->txlock); 4013 data->suspend_count--; 4014 return -EBUSY; 4015 } 4016 4017 cancel_work_sync(&data->work); 4018 4019 btusb_stop_traffic(data); 4020 usb_kill_anchored_urbs(&data->tx_anchor); 4021 4022 if (data->oob_wake_irq && device_may_wakeup(&data->udev->dev)) { 4023 set_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags); 4024 enable_irq_wake(data->oob_wake_irq); 4025 enable_irq(data->oob_wake_irq); 4026 } 4027 4028 /* For global suspend, Realtek devices lose the loaded fw 4029 * in them. But for autosuspend, firmware should remain. 4030 * Actually, it depends on whether the usb host sends 4031 * set feature (enable wakeup) or not. 4032 */ 4033 if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags)) { 4034 if (PMSG_IS_AUTO(message) && 4035 device_can_wakeup(&data->udev->dev)) 4036 data->udev->do_remote_wakeup = 1; 4037 else if (!PMSG_IS_AUTO(message)) 4038 data->udev->reset_resume = 1; 4039 } 4040 4041 return 0; 4042 } 4043 4044 static void play_deferred(struct btusb_data *data) 4045 { 4046 struct urb *urb; 4047 int err; 4048 4049 while ((urb = usb_get_from_anchor(&data->deferred))) { 4050 usb_anchor_urb(urb, &data->tx_anchor); 4051 4052 err = usb_submit_urb(urb, GFP_ATOMIC); 4053 if (err < 0) { 4054 if (err != -EPERM && err != -ENODEV) 4055 BT_ERR("%s urb %p submission failed (%d)", 4056 data->hdev->name, urb, -err); 4057 kfree(urb->setup_packet); 4058 usb_unanchor_urb(urb); 4059 usb_free_urb(urb); 4060 break; 4061 } 4062 4063 data->tx_in_flight++; 4064 usb_free_urb(urb); 4065 } 4066 4067 /* Cleanup the rest deferred urbs. */ 4068 while ((urb = usb_get_from_anchor(&data->deferred))) { 4069 kfree(urb->setup_packet); 4070 usb_free_urb(urb); 4071 } 4072 } 4073 4074 static int btusb_resume(struct usb_interface *intf) 4075 { 4076 struct btusb_data *data = usb_get_intfdata(intf); 4077 struct hci_dev *hdev = data->hdev; 4078 int err = 0; 4079 4080 BT_DBG("intf %p", intf); 4081 4082 if (--data->suspend_count) 4083 return 0; 4084 4085 /* Disable only if not already disabled (keep it balanced) */ 4086 if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) { 4087 disable_irq(data->oob_wake_irq); 4088 disable_irq_wake(data->oob_wake_irq); 4089 } 4090 4091 if (!test_bit(HCI_RUNNING, &hdev->flags)) 4092 goto done; 4093 4094 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) { 4095 err = btusb_submit_intr_urb(hdev, GFP_NOIO); 4096 if (err < 0) { 4097 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 4098 goto failed; 4099 } 4100 } 4101 4102 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) { 4103 err = btusb_submit_bulk_urb(hdev, GFP_NOIO); 4104 if (err < 0) { 4105 clear_bit(BTUSB_BULK_RUNNING, &data->flags); 4106 goto failed; 4107 } 4108 4109 btusb_submit_bulk_urb(hdev, GFP_NOIO); 4110 } 4111 4112 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) { 4113 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0) 4114 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 4115 else 4116 btusb_submit_isoc_urb(hdev, GFP_NOIO); 4117 } 4118 4119 spin_lock_irq(&data->txlock); 4120 play_deferred(data); 4121 clear_bit(BTUSB_SUSPENDING, &data->flags); 4122 spin_unlock_irq(&data->txlock); 4123 schedule_work(&data->work); 4124 4125 return 0; 4126 4127 failed: 4128 usb_scuttle_anchored_urbs(&data->deferred); 4129 done: 4130 spin_lock_irq(&data->txlock); 4131 clear_bit(BTUSB_SUSPENDING, &data->flags); 4132 spin_unlock_irq(&data->txlock); 4133 4134 return err; 4135 } 4136 #endif 4137 4138 static struct usb_driver btusb_driver = { 4139 .name = "btusb", 4140 .probe = btusb_probe, 4141 .disconnect = btusb_disconnect, 4142 #ifdef CONFIG_PM 4143 .suspend = btusb_suspend, 4144 .resume = btusb_resume, 4145 #endif 4146 .id_table = btusb_table, 4147 .supports_autosuspend = 1, 4148 .disable_hub_initiated_lpm = 1, 4149 }; 4150 4151 module_usb_driver(btusb_driver); 4152 4153 module_param(disable_scofix, bool, 0644); 4154 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size"); 4155 4156 module_param(force_scofix, bool, 0644); 4157 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size"); 4158 4159 module_param(enable_autosuspend, bool, 0644); 4160 MODULE_PARM_DESC(enable_autosuspend, "Enable USB autosuspend by default"); 4161 4162 module_param(reset, bool, 0644); 4163 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization"); 4164 4165 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); 4166 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION); 4167 MODULE_VERSION(VERSION); 4168 MODULE_LICENSE("GPL"); 4169