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