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 goto setup_fail; 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 setup_fail: 1243 usb_autopm_put_interface(data->intf); 1244 return err; 1245 } 1246 1247 static void btusb_stop_traffic(struct btusb_data *data) 1248 { 1249 usb_kill_anchored_urbs(&data->intr_anchor); 1250 usb_kill_anchored_urbs(&data->bulk_anchor); 1251 usb_kill_anchored_urbs(&data->isoc_anchor); 1252 usb_kill_anchored_urbs(&data->diag_anchor); 1253 usb_kill_anchored_urbs(&data->ctrl_anchor); 1254 } 1255 1256 static int btusb_close(struct hci_dev *hdev) 1257 { 1258 struct btusb_data *data = hci_get_drvdata(hdev); 1259 int err; 1260 1261 BT_DBG("%s", hdev->name); 1262 1263 cancel_work_sync(&data->work); 1264 cancel_work_sync(&data->waker); 1265 1266 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1267 clear_bit(BTUSB_BULK_RUNNING, &data->flags); 1268 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 1269 clear_bit(BTUSB_DIAG_RUNNING, &data->flags); 1270 1271 btusb_stop_traffic(data); 1272 btusb_free_frags(data); 1273 1274 err = usb_autopm_get_interface(data->intf); 1275 if (err < 0) 1276 goto failed; 1277 1278 data->intf->needs_remote_wakeup = 0; 1279 1280 /* Enable remote wake up for auto-suspend */ 1281 if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags)) 1282 data->intf->needs_remote_wakeup = 1; 1283 1284 usb_autopm_put_interface(data->intf); 1285 1286 failed: 1287 usb_scuttle_anchored_urbs(&data->deferred); 1288 return 0; 1289 } 1290 1291 static int btusb_flush(struct hci_dev *hdev) 1292 { 1293 struct btusb_data *data = hci_get_drvdata(hdev); 1294 1295 BT_DBG("%s", hdev->name); 1296 1297 usb_kill_anchored_urbs(&data->tx_anchor); 1298 btusb_free_frags(data); 1299 1300 return 0; 1301 } 1302 1303 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb) 1304 { 1305 struct btusb_data *data = hci_get_drvdata(hdev); 1306 struct usb_ctrlrequest *dr; 1307 struct urb *urb; 1308 unsigned int pipe; 1309 1310 urb = usb_alloc_urb(0, GFP_KERNEL); 1311 if (!urb) 1312 return ERR_PTR(-ENOMEM); 1313 1314 dr = kmalloc(sizeof(*dr), GFP_KERNEL); 1315 if (!dr) { 1316 usb_free_urb(urb); 1317 return ERR_PTR(-ENOMEM); 1318 } 1319 1320 dr->bRequestType = data->cmdreq_type; 1321 dr->bRequest = data->cmdreq; 1322 dr->wIndex = 0; 1323 dr->wValue = 0; 1324 dr->wLength = __cpu_to_le16(skb->len); 1325 1326 pipe = usb_sndctrlpipe(data->udev, 0x00); 1327 1328 usb_fill_control_urb(urb, data->udev, pipe, (void *)dr, 1329 skb->data, skb->len, btusb_tx_complete, skb); 1330 1331 skb->dev = (void *)hdev; 1332 1333 return urb; 1334 } 1335 1336 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb) 1337 { 1338 struct btusb_data *data = hci_get_drvdata(hdev); 1339 struct urb *urb; 1340 unsigned int pipe; 1341 1342 if (!data->bulk_tx_ep) 1343 return ERR_PTR(-ENODEV); 1344 1345 urb = usb_alloc_urb(0, GFP_KERNEL); 1346 if (!urb) 1347 return ERR_PTR(-ENOMEM); 1348 1349 pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress); 1350 1351 usb_fill_bulk_urb(urb, data->udev, pipe, 1352 skb->data, skb->len, btusb_tx_complete, skb); 1353 1354 skb->dev = (void *)hdev; 1355 1356 return urb; 1357 } 1358 1359 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb) 1360 { 1361 struct btusb_data *data = hci_get_drvdata(hdev); 1362 struct urb *urb; 1363 unsigned int pipe; 1364 1365 if (!data->isoc_tx_ep) 1366 return ERR_PTR(-ENODEV); 1367 1368 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL); 1369 if (!urb) 1370 return ERR_PTR(-ENOMEM); 1371 1372 pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress); 1373 1374 usb_fill_int_urb(urb, data->udev, pipe, 1375 skb->data, skb->len, btusb_isoc_tx_complete, 1376 skb, data->isoc_tx_ep->bInterval); 1377 1378 urb->transfer_flags = URB_ISO_ASAP; 1379 1380 __fill_isoc_descriptor(urb, skb->len, 1381 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize)); 1382 1383 skb->dev = (void *)hdev; 1384 1385 return urb; 1386 } 1387 1388 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb) 1389 { 1390 struct btusb_data *data = hci_get_drvdata(hdev); 1391 int err; 1392 1393 usb_anchor_urb(urb, &data->tx_anchor); 1394 1395 err = usb_submit_urb(urb, GFP_KERNEL); 1396 if (err < 0) { 1397 if (err != -EPERM && err != -ENODEV) 1398 bt_dev_err(hdev, "urb %p submission failed (%d)", 1399 urb, -err); 1400 kfree(urb->setup_packet); 1401 usb_unanchor_urb(urb); 1402 } else { 1403 usb_mark_last_busy(data->udev); 1404 } 1405 1406 usb_free_urb(urb); 1407 return err; 1408 } 1409 1410 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb) 1411 { 1412 struct btusb_data *data = hci_get_drvdata(hdev); 1413 unsigned long flags; 1414 bool suspending; 1415 1416 spin_lock_irqsave(&data->txlock, flags); 1417 suspending = test_bit(BTUSB_SUSPENDING, &data->flags); 1418 if (!suspending) 1419 data->tx_in_flight++; 1420 spin_unlock_irqrestore(&data->txlock, flags); 1421 1422 if (!suspending) 1423 return submit_tx_urb(hdev, urb); 1424 1425 usb_anchor_urb(urb, &data->deferred); 1426 schedule_work(&data->waker); 1427 1428 usb_free_urb(urb); 1429 return 0; 1430 } 1431 1432 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb) 1433 { 1434 struct urb *urb; 1435 1436 BT_DBG("%s", hdev->name); 1437 1438 switch (hci_skb_pkt_type(skb)) { 1439 case HCI_COMMAND_PKT: 1440 urb = alloc_ctrl_urb(hdev, skb); 1441 if (IS_ERR(urb)) 1442 return PTR_ERR(urb); 1443 1444 hdev->stat.cmd_tx++; 1445 return submit_or_queue_tx_urb(hdev, urb); 1446 1447 case HCI_ACLDATA_PKT: 1448 urb = alloc_bulk_urb(hdev, skb); 1449 if (IS_ERR(urb)) 1450 return PTR_ERR(urb); 1451 1452 hdev->stat.acl_tx++; 1453 return submit_or_queue_tx_urb(hdev, urb); 1454 1455 case HCI_SCODATA_PKT: 1456 if (hci_conn_num(hdev, SCO_LINK) < 1) 1457 return -ENODEV; 1458 1459 urb = alloc_isoc_urb(hdev, skb); 1460 if (IS_ERR(urb)) 1461 return PTR_ERR(urb); 1462 1463 hdev->stat.sco_tx++; 1464 return submit_tx_urb(hdev, urb); 1465 } 1466 1467 return -EILSEQ; 1468 } 1469 1470 static void btusb_notify(struct hci_dev *hdev, unsigned int evt) 1471 { 1472 struct btusb_data *data = hci_get_drvdata(hdev); 1473 1474 BT_DBG("%s evt %d", hdev->name, evt); 1475 1476 if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) { 1477 data->sco_num = hci_conn_num(hdev, SCO_LINK); 1478 schedule_work(&data->work); 1479 } 1480 } 1481 1482 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting) 1483 { 1484 struct btusb_data *data = hci_get_drvdata(hdev); 1485 struct usb_interface *intf = data->isoc; 1486 struct usb_endpoint_descriptor *ep_desc; 1487 int i, err; 1488 1489 if (!data->isoc) 1490 return -ENODEV; 1491 1492 err = usb_set_interface(data->udev, data->isoc_ifnum, altsetting); 1493 if (err < 0) { 1494 bt_dev_err(hdev, "setting interface failed (%d)", -err); 1495 return err; 1496 } 1497 1498 data->isoc_altsetting = altsetting; 1499 1500 data->isoc_tx_ep = NULL; 1501 data->isoc_rx_ep = NULL; 1502 1503 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { 1504 ep_desc = &intf->cur_altsetting->endpoint[i].desc; 1505 1506 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) { 1507 data->isoc_tx_ep = ep_desc; 1508 continue; 1509 } 1510 1511 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) { 1512 data->isoc_rx_ep = ep_desc; 1513 continue; 1514 } 1515 } 1516 1517 if (!data->isoc_tx_ep || !data->isoc_rx_ep) { 1518 bt_dev_err(hdev, "invalid SCO descriptors"); 1519 return -ENODEV; 1520 } 1521 1522 return 0; 1523 } 1524 1525 static void btusb_work(struct work_struct *work) 1526 { 1527 struct btusb_data *data = container_of(work, struct btusb_data, work); 1528 struct hci_dev *hdev = data->hdev; 1529 int new_alts; 1530 int err; 1531 1532 if (data->sco_num > 0) { 1533 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) { 1534 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf); 1535 if (err < 0) { 1536 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1537 usb_kill_anchored_urbs(&data->isoc_anchor); 1538 return; 1539 } 1540 1541 set_bit(BTUSB_DID_ISO_RESUME, &data->flags); 1542 } 1543 1544 if (hdev->voice_setting & 0x0020) { 1545 static const int alts[3] = { 2, 4, 5 }; 1546 1547 new_alts = alts[data->sco_num - 1]; 1548 } else { 1549 new_alts = data->sco_num; 1550 } 1551 1552 if (data->isoc_altsetting != new_alts) { 1553 unsigned long flags; 1554 1555 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1556 usb_kill_anchored_urbs(&data->isoc_anchor); 1557 1558 /* When isochronous alternate setting needs to be 1559 * changed, because SCO connection has been added 1560 * or removed, a packet fragment may be left in the 1561 * reassembling state. This could lead to wrongly 1562 * assembled fragments. 1563 * 1564 * Clear outstanding fragment when selecting a new 1565 * alternate setting. 1566 */ 1567 spin_lock_irqsave(&data->rxlock, flags); 1568 kfree_skb(data->sco_skb); 1569 data->sco_skb = NULL; 1570 spin_unlock_irqrestore(&data->rxlock, flags); 1571 1572 if (__set_isoc_interface(hdev, new_alts) < 0) 1573 return; 1574 } 1575 1576 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) { 1577 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0) 1578 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1579 else 1580 btusb_submit_isoc_urb(hdev, GFP_KERNEL); 1581 } 1582 } else { 1583 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1584 usb_kill_anchored_urbs(&data->isoc_anchor); 1585 1586 __set_isoc_interface(hdev, 0); 1587 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags)) 1588 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf); 1589 } 1590 } 1591 1592 static void btusb_waker(struct work_struct *work) 1593 { 1594 struct btusb_data *data = container_of(work, struct btusb_data, waker); 1595 int err; 1596 1597 err = usb_autopm_get_interface(data->intf); 1598 if (err < 0) 1599 return; 1600 1601 usb_autopm_put_interface(data->intf); 1602 } 1603 1604 static int btusb_setup_bcm92035(struct hci_dev *hdev) 1605 { 1606 struct sk_buff *skb; 1607 u8 val = 0x00; 1608 1609 BT_DBG("%s", hdev->name); 1610 1611 skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT); 1612 if (IS_ERR(skb)) 1613 bt_dev_err(hdev, "BCM92035 command failed (%ld)", PTR_ERR(skb)); 1614 else 1615 kfree_skb(skb); 1616 1617 return 0; 1618 } 1619 1620 static int btusb_setup_csr(struct hci_dev *hdev) 1621 { 1622 struct hci_rp_read_local_version *rp; 1623 struct sk_buff *skb; 1624 1625 BT_DBG("%s", hdev->name); 1626 1627 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL, 1628 HCI_INIT_TIMEOUT); 1629 if (IS_ERR(skb)) { 1630 int err = PTR_ERR(skb); 1631 bt_dev_err(hdev, "CSR: Local version failed (%d)", err); 1632 return err; 1633 } 1634 1635 if (skb->len != sizeof(struct hci_rp_read_local_version)) { 1636 bt_dev_err(hdev, "CSR: Local version length mismatch"); 1637 kfree_skb(skb); 1638 return -EIO; 1639 } 1640 1641 rp = (struct hci_rp_read_local_version *)skb->data; 1642 1643 /* Detect controllers which aren't real CSR ones. */ 1644 if (le16_to_cpu(rp->manufacturer) != 10 || 1645 le16_to_cpu(rp->lmp_subver) == 0x0c5c) { 1646 /* Clear the reset quirk since this is not an actual 1647 * early Bluetooth 1.1 device from CSR. 1648 */ 1649 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); 1650 1651 /* These fake CSR controllers have all a broken 1652 * stored link key handling and so just disable it. 1653 */ 1654 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks); 1655 } 1656 1657 kfree_skb(skb); 1658 1659 return 0; 1660 } 1661 1662 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev, 1663 struct intel_version *ver) 1664 { 1665 const struct firmware *fw; 1666 char fwname[64]; 1667 int ret; 1668 1669 snprintf(fwname, sizeof(fwname), 1670 "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq", 1671 ver->hw_platform, ver->hw_variant, ver->hw_revision, 1672 ver->fw_variant, ver->fw_revision, ver->fw_build_num, 1673 ver->fw_build_ww, ver->fw_build_yy); 1674 1675 ret = request_firmware(&fw, fwname, &hdev->dev); 1676 if (ret < 0) { 1677 if (ret == -EINVAL) { 1678 bt_dev_err(hdev, "Intel firmware file request failed (%d)", 1679 ret); 1680 return NULL; 1681 } 1682 1683 bt_dev_err(hdev, "failed to open Intel firmware file: %s (%d)", 1684 fwname, ret); 1685 1686 /* If the correct firmware patch file is not found, use the 1687 * default firmware patch file instead 1688 */ 1689 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq", 1690 ver->hw_platform, ver->hw_variant); 1691 if (request_firmware(&fw, fwname, &hdev->dev) < 0) { 1692 bt_dev_err(hdev, "failed to open default fw file: %s", 1693 fwname); 1694 return NULL; 1695 } 1696 } 1697 1698 bt_dev_info(hdev, "Intel Bluetooth firmware file: %s", fwname); 1699 1700 return fw; 1701 } 1702 1703 static int btusb_setup_intel_patching(struct hci_dev *hdev, 1704 const struct firmware *fw, 1705 const u8 **fw_ptr, int *disable_patch) 1706 { 1707 struct sk_buff *skb; 1708 struct hci_command_hdr *cmd; 1709 const u8 *cmd_param; 1710 struct hci_event_hdr *evt = NULL; 1711 const u8 *evt_param = NULL; 1712 int remain = fw->size - (*fw_ptr - fw->data); 1713 1714 /* The first byte indicates the types of the patch command or event. 1715 * 0x01 means HCI command and 0x02 is HCI event. If the first bytes 1716 * in the current firmware buffer doesn't start with 0x01 or 1717 * the size of remain buffer is smaller than HCI command header, 1718 * the firmware file is corrupted and it should stop the patching 1719 * process. 1720 */ 1721 if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) { 1722 bt_dev_err(hdev, "Intel fw corrupted: invalid cmd read"); 1723 return -EINVAL; 1724 } 1725 (*fw_ptr)++; 1726 remain--; 1727 1728 cmd = (struct hci_command_hdr *)(*fw_ptr); 1729 *fw_ptr += sizeof(*cmd); 1730 remain -= sizeof(*cmd); 1731 1732 /* Ensure that the remain firmware data is long enough than the length 1733 * of command parameter. If not, the firmware file is corrupted. 1734 */ 1735 if (remain < cmd->plen) { 1736 bt_dev_err(hdev, "Intel fw corrupted: invalid cmd len"); 1737 return -EFAULT; 1738 } 1739 1740 /* If there is a command that loads a patch in the firmware 1741 * file, then enable the patch upon success, otherwise just 1742 * disable the manufacturer mode, for example patch activation 1743 * is not required when the default firmware patch file is used 1744 * because there are no patch data to load. 1745 */ 1746 if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e) 1747 *disable_patch = 0; 1748 1749 cmd_param = *fw_ptr; 1750 *fw_ptr += cmd->plen; 1751 remain -= cmd->plen; 1752 1753 /* This reads the expected events when the above command is sent to the 1754 * device. Some vendor commands expects more than one events, for 1755 * example command status event followed by vendor specific event. 1756 * For this case, it only keeps the last expected event. so the command 1757 * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of 1758 * last expected event. 1759 */ 1760 while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) { 1761 (*fw_ptr)++; 1762 remain--; 1763 1764 evt = (struct hci_event_hdr *)(*fw_ptr); 1765 *fw_ptr += sizeof(*evt); 1766 remain -= sizeof(*evt); 1767 1768 if (remain < evt->plen) { 1769 bt_dev_err(hdev, "Intel fw corrupted: invalid evt len"); 1770 return -EFAULT; 1771 } 1772 1773 evt_param = *fw_ptr; 1774 *fw_ptr += evt->plen; 1775 remain -= evt->plen; 1776 } 1777 1778 /* Every HCI commands in the firmware file has its correspond event. 1779 * If event is not found or remain is smaller than zero, the firmware 1780 * file is corrupted. 1781 */ 1782 if (!evt || !evt_param || remain < 0) { 1783 bt_dev_err(hdev, "Intel fw corrupted: invalid evt read"); 1784 return -EFAULT; 1785 } 1786 1787 skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen, 1788 cmd_param, evt->evt, HCI_INIT_TIMEOUT); 1789 if (IS_ERR(skb)) { 1790 bt_dev_err(hdev, "sending Intel patch command (0x%4.4x) failed (%ld)", 1791 cmd->opcode, PTR_ERR(skb)); 1792 return PTR_ERR(skb); 1793 } 1794 1795 /* It ensures that the returned event matches the event data read from 1796 * the firmware file. At fist, it checks the length and then 1797 * the contents of the event. 1798 */ 1799 if (skb->len != evt->plen) { 1800 bt_dev_err(hdev, "mismatch event length (opcode 0x%4.4x)", 1801 le16_to_cpu(cmd->opcode)); 1802 kfree_skb(skb); 1803 return -EFAULT; 1804 } 1805 1806 if (memcmp(skb->data, evt_param, evt->plen)) { 1807 bt_dev_err(hdev, "mismatch event parameter (opcode 0x%4.4x)", 1808 le16_to_cpu(cmd->opcode)); 1809 kfree_skb(skb); 1810 return -EFAULT; 1811 } 1812 kfree_skb(skb); 1813 1814 return 0; 1815 } 1816 1817 static int btusb_setup_intel(struct hci_dev *hdev) 1818 { 1819 struct sk_buff *skb; 1820 const struct firmware *fw; 1821 const u8 *fw_ptr; 1822 int disable_patch, err; 1823 struct intel_version ver; 1824 1825 BT_DBG("%s", hdev->name); 1826 1827 /* The controller has a bug with the first HCI command sent to it 1828 * returning number of completed commands as zero. This would stall the 1829 * command processing in the Bluetooth core. 1830 * 1831 * As a workaround, send HCI Reset command first which will reset the 1832 * number of completed commands and allow normal command processing 1833 * from now on. 1834 */ 1835 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT); 1836 if (IS_ERR(skb)) { 1837 bt_dev_err(hdev, "sending initial HCI reset command failed (%ld)", 1838 PTR_ERR(skb)); 1839 return PTR_ERR(skb); 1840 } 1841 kfree_skb(skb); 1842 1843 /* Read Intel specific controller version first to allow selection of 1844 * which firmware file to load. 1845 * 1846 * The returned information are hardware variant and revision plus 1847 * firmware variant, revision and build number. 1848 */ 1849 err = btintel_read_version(hdev, &ver); 1850 if (err) 1851 return err; 1852 1853 bt_dev_info(hdev, "read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x", 1854 ver.hw_platform, ver.hw_variant, ver.hw_revision, 1855 ver.fw_variant, ver.fw_revision, ver.fw_build_num, 1856 ver.fw_build_ww, ver.fw_build_yy, ver.fw_patch_num); 1857 1858 /* fw_patch_num indicates the version of patch the device currently 1859 * have. If there is no patch data in the device, it is always 0x00. 1860 * So, if it is other than 0x00, no need to patch the device again. 1861 */ 1862 if (ver.fw_patch_num) { 1863 bt_dev_info(hdev, "Intel device is already patched. " 1864 "patch num: %02x", ver.fw_patch_num); 1865 goto complete; 1866 } 1867 1868 /* Opens the firmware patch file based on the firmware version read 1869 * from the controller. If it fails to open the matching firmware 1870 * patch file, it tries to open the default firmware patch file. 1871 * If no patch file is found, allow the device to operate without 1872 * a patch. 1873 */ 1874 fw = btusb_setup_intel_get_fw(hdev, &ver); 1875 if (!fw) 1876 goto complete; 1877 fw_ptr = fw->data; 1878 1879 /* Enable the manufacturer mode of the controller. 1880 * Only while this mode is enabled, the driver can download the 1881 * firmware patch data and configuration parameters. 1882 */ 1883 err = btintel_enter_mfg(hdev); 1884 if (err) { 1885 release_firmware(fw); 1886 return err; 1887 } 1888 1889 disable_patch = 1; 1890 1891 /* The firmware data file consists of list of Intel specific HCI 1892 * commands and its expected events. The first byte indicates the 1893 * type of the message, either HCI command or HCI event. 1894 * 1895 * It reads the command and its expected event from the firmware file, 1896 * and send to the controller. Once __hci_cmd_sync_ev() returns, 1897 * the returned event is compared with the event read from the firmware 1898 * file and it will continue until all the messages are downloaded to 1899 * the controller. 1900 * 1901 * Once the firmware patching is completed successfully, 1902 * the manufacturer mode is disabled with reset and activating the 1903 * downloaded patch. 1904 * 1905 * If the firmware patching fails, the manufacturer mode is 1906 * disabled with reset and deactivating the patch. 1907 * 1908 * If the default patch file is used, no reset is done when disabling 1909 * the manufacturer. 1910 */ 1911 while (fw->size > fw_ptr - fw->data) { 1912 int ret; 1913 1914 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr, 1915 &disable_patch); 1916 if (ret < 0) 1917 goto exit_mfg_deactivate; 1918 } 1919 1920 release_firmware(fw); 1921 1922 if (disable_patch) 1923 goto exit_mfg_disable; 1924 1925 /* Patching completed successfully and disable the manufacturer mode 1926 * with reset and activate the downloaded firmware patches. 1927 */ 1928 err = btintel_exit_mfg(hdev, true, true); 1929 if (err) 1930 return err; 1931 1932 bt_dev_info(hdev, "Intel firmware patch completed and activated"); 1933 1934 goto complete; 1935 1936 exit_mfg_disable: 1937 /* Disable the manufacturer mode without reset */ 1938 err = btintel_exit_mfg(hdev, false, false); 1939 if (err) 1940 return err; 1941 1942 bt_dev_info(hdev, "Intel firmware patch completed"); 1943 1944 goto complete; 1945 1946 exit_mfg_deactivate: 1947 release_firmware(fw); 1948 1949 /* Patching failed. Disable the manufacturer mode with reset and 1950 * deactivate the downloaded firmware patches. 1951 */ 1952 err = btintel_exit_mfg(hdev, true, false); 1953 if (err) 1954 return err; 1955 1956 bt_dev_info(hdev, "Intel firmware patch completed and deactivated"); 1957 1958 complete: 1959 /* Set the event mask for Intel specific vendor events. This enables 1960 * a few extra events that are useful during general operation. 1961 */ 1962 btintel_set_event_mask_mfg(hdev, false); 1963 1964 btintel_check_bdaddr(hdev); 1965 return 0; 1966 } 1967 1968 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode) 1969 { 1970 struct sk_buff *skb; 1971 struct hci_event_hdr *hdr; 1972 struct hci_ev_cmd_complete *evt; 1973 1974 skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_KERNEL); 1975 if (!skb) 1976 return -ENOMEM; 1977 1978 hdr = skb_put(skb, sizeof(*hdr)); 1979 hdr->evt = HCI_EV_CMD_COMPLETE; 1980 hdr->plen = sizeof(*evt) + 1; 1981 1982 evt = skb_put(skb, sizeof(*evt)); 1983 evt->ncmd = 0x01; 1984 evt->opcode = cpu_to_le16(opcode); 1985 1986 skb_put_u8(skb, 0x00); 1987 1988 hci_skb_pkt_type(skb) = HCI_EVENT_PKT; 1989 1990 return hci_recv_frame(hdev, skb); 1991 } 1992 1993 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer, 1994 int count) 1995 { 1996 /* When the device is in bootloader mode, then it can send 1997 * events via the bulk endpoint. These events are treated the 1998 * same way as the ones received from the interrupt endpoint. 1999 */ 2000 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) 2001 return btusb_recv_intr(data, buffer, count); 2002 2003 return btusb_recv_bulk(data, buffer, count); 2004 } 2005 2006 static void btusb_intel_bootup(struct btusb_data *data, const void *ptr, 2007 unsigned int len) 2008 { 2009 const struct intel_bootup *evt = ptr; 2010 2011 if (len != sizeof(*evt)) 2012 return; 2013 2014 if (test_and_clear_bit(BTUSB_BOOTING, &data->flags)) 2015 wake_up_bit(&data->flags, BTUSB_BOOTING); 2016 } 2017 2018 static void btusb_intel_secure_send_result(struct btusb_data *data, 2019 const void *ptr, unsigned int len) 2020 { 2021 const struct intel_secure_send_result *evt = ptr; 2022 2023 if (len != sizeof(*evt)) 2024 return; 2025 2026 if (evt->result) 2027 set_bit(BTUSB_FIRMWARE_FAILED, &data->flags); 2028 2029 if (test_and_clear_bit(BTUSB_DOWNLOADING, &data->flags) && 2030 test_bit(BTUSB_FIRMWARE_LOADED, &data->flags)) 2031 wake_up_bit(&data->flags, BTUSB_DOWNLOADING); 2032 } 2033 2034 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb) 2035 { 2036 struct btusb_data *data = hci_get_drvdata(hdev); 2037 2038 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) { 2039 struct hci_event_hdr *hdr = (void *)skb->data; 2040 2041 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff && 2042 hdr->plen > 0) { 2043 const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1; 2044 unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1; 2045 2046 switch (skb->data[2]) { 2047 case 0x02: 2048 /* When switching to the operational firmware 2049 * the device sends a vendor specific event 2050 * indicating that the bootup completed. 2051 */ 2052 btusb_intel_bootup(data, ptr, len); 2053 break; 2054 case 0x06: 2055 /* When the firmware loading completes the 2056 * device sends out a vendor specific event 2057 * indicating the result of the firmware 2058 * loading. 2059 */ 2060 btusb_intel_secure_send_result(data, ptr, len); 2061 break; 2062 } 2063 } 2064 } 2065 2066 return hci_recv_frame(hdev, skb); 2067 } 2068 2069 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb) 2070 { 2071 struct btusb_data *data = hci_get_drvdata(hdev); 2072 struct urb *urb; 2073 2074 BT_DBG("%s", hdev->name); 2075 2076 switch (hci_skb_pkt_type(skb)) { 2077 case HCI_COMMAND_PKT: 2078 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) { 2079 struct hci_command_hdr *cmd = (void *)skb->data; 2080 __u16 opcode = le16_to_cpu(cmd->opcode); 2081 2082 /* When in bootloader mode and the command 0xfc09 2083 * is received, it needs to be send down the 2084 * bulk endpoint. So allocate a bulk URB instead. 2085 */ 2086 if (opcode == 0xfc09) 2087 urb = alloc_bulk_urb(hdev, skb); 2088 else 2089 urb = alloc_ctrl_urb(hdev, skb); 2090 2091 /* When the 0xfc01 command is issued to boot into 2092 * the operational firmware, it will actually not 2093 * send a command complete event. To keep the flow 2094 * control working inject that event here. 2095 */ 2096 if (opcode == 0xfc01) 2097 inject_cmd_complete(hdev, opcode); 2098 } else { 2099 urb = alloc_ctrl_urb(hdev, skb); 2100 } 2101 if (IS_ERR(urb)) 2102 return PTR_ERR(urb); 2103 2104 hdev->stat.cmd_tx++; 2105 return submit_or_queue_tx_urb(hdev, urb); 2106 2107 case HCI_ACLDATA_PKT: 2108 urb = alloc_bulk_urb(hdev, skb); 2109 if (IS_ERR(urb)) 2110 return PTR_ERR(urb); 2111 2112 hdev->stat.acl_tx++; 2113 return submit_or_queue_tx_urb(hdev, urb); 2114 2115 case HCI_SCODATA_PKT: 2116 if (hci_conn_num(hdev, SCO_LINK) < 1) 2117 return -ENODEV; 2118 2119 urb = alloc_isoc_urb(hdev, skb); 2120 if (IS_ERR(urb)) 2121 return PTR_ERR(urb); 2122 2123 hdev->stat.sco_tx++; 2124 return submit_tx_urb(hdev, urb); 2125 } 2126 2127 return -EILSEQ; 2128 } 2129 2130 static bool btusb_setup_intel_new_get_fw_name(struct intel_version *ver, 2131 struct intel_boot_params *params, 2132 char *fw_name, size_t len, 2133 const char *suffix) 2134 { 2135 switch (ver->hw_variant) { 2136 case 0x0b: /* SfP */ 2137 case 0x0c: /* WsP */ 2138 snprintf(fw_name, len, "intel/ibt-%u-%u.%s", 2139 le16_to_cpu(ver->hw_variant), 2140 le16_to_cpu(params->dev_revid), 2141 suffix); 2142 break; 2143 case 0x11: /* JfP */ 2144 case 0x12: /* ThP */ 2145 case 0x13: /* HrP */ 2146 case 0x14: /* CcP */ 2147 snprintf(fw_name, len, "intel/ibt-%u-%u-%u.%s", 2148 le16_to_cpu(ver->hw_variant), 2149 le16_to_cpu(ver->hw_revision), 2150 le16_to_cpu(ver->fw_revision), 2151 suffix); 2152 break; 2153 default: 2154 return false; 2155 } 2156 return true; 2157 } 2158 2159 static int btusb_setup_intel_new(struct hci_dev *hdev) 2160 { 2161 struct btusb_data *data = hci_get_drvdata(hdev); 2162 struct intel_version ver; 2163 struct intel_boot_params params; 2164 const struct firmware *fw; 2165 u32 boot_param; 2166 char fwname[64]; 2167 ktime_t calltime, delta, rettime; 2168 unsigned long long duration; 2169 int err; 2170 2171 BT_DBG("%s", hdev->name); 2172 2173 /* Set the default boot parameter to 0x0 and it is updated to 2174 * SKU specific boot parameter after reading Intel_Write_Boot_Params 2175 * command while downloading the firmware. 2176 */ 2177 boot_param = 0x00000000; 2178 2179 calltime = ktime_get(); 2180 2181 /* Read the Intel version information to determine if the device 2182 * is in bootloader mode or if it already has operational firmware 2183 * loaded. 2184 */ 2185 err = btintel_read_version(hdev, &ver); 2186 if (err) { 2187 bt_dev_err(hdev, "Intel Read version failed (%d)", err); 2188 btintel_reset_to_bootloader(hdev); 2189 return err; 2190 } 2191 2192 /* The hardware platform number has a fixed value of 0x37 and 2193 * for now only accept this single value. 2194 */ 2195 if (ver.hw_platform != 0x37) { 2196 bt_dev_err(hdev, "Unsupported Intel hardware platform (%u)", 2197 ver.hw_platform); 2198 return -EINVAL; 2199 } 2200 2201 /* Check for supported iBT hardware variants of this firmware 2202 * loading method. 2203 * 2204 * This check has been put in place to ensure correct forward 2205 * compatibility options when newer hardware variants come along. 2206 */ 2207 switch (ver.hw_variant) { 2208 case 0x0b: /* SfP */ 2209 case 0x0c: /* WsP */ 2210 case 0x11: /* JfP */ 2211 case 0x12: /* ThP */ 2212 case 0x13: /* HrP */ 2213 case 0x14: /* CcP */ 2214 break; 2215 default: 2216 bt_dev_err(hdev, "Unsupported Intel hardware variant (%u)", 2217 ver.hw_variant); 2218 return -EINVAL; 2219 } 2220 2221 btintel_version_info(hdev, &ver); 2222 2223 /* The firmware variant determines if the device is in bootloader 2224 * mode or is running operational firmware. The value 0x06 identifies 2225 * the bootloader and the value 0x23 identifies the operational 2226 * firmware. 2227 * 2228 * When the operational firmware is already present, then only 2229 * the check for valid Bluetooth device address is needed. This 2230 * determines if the device will be added as configured or 2231 * unconfigured controller. 2232 * 2233 * It is not possible to use the Secure Boot Parameters in this 2234 * case since that command is only available in bootloader mode. 2235 */ 2236 if (ver.fw_variant == 0x23) { 2237 clear_bit(BTUSB_BOOTLOADER, &data->flags); 2238 btintel_check_bdaddr(hdev); 2239 return 0; 2240 } 2241 2242 /* If the device is not in bootloader mode, then the only possible 2243 * choice is to return an error and abort the device initialization. 2244 */ 2245 if (ver.fw_variant != 0x06) { 2246 bt_dev_err(hdev, "Unsupported Intel firmware variant (%u)", 2247 ver.fw_variant); 2248 return -ENODEV; 2249 } 2250 2251 /* Read the secure boot parameters to identify the operating 2252 * details of the bootloader. 2253 */ 2254 err = btintel_read_boot_params(hdev, ¶ms); 2255 if (err) 2256 return err; 2257 2258 /* It is required that every single firmware fragment is acknowledged 2259 * with a command complete event. If the boot parameters indicate 2260 * that this bootloader does not send them, then abort the setup. 2261 */ 2262 if (params.limited_cce != 0x00) { 2263 bt_dev_err(hdev, "Unsupported Intel firmware loading method (%u)", 2264 params.limited_cce); 2265 return -EINVAL; 2266 } 2267 2268 /* If the OTP has no valid Bluetooth device address, then there will 2269 * also be no valid address for the operational firmware. 2270 */ 2271 if (!bacmp(¶ms.otp_bdaddr, BDADDR_ANY)) { 2272 bt_dev_info(hdev, "No device address configured"); 2273 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks); 2274 } 2275 2276 /* With this Intel bootloader only the hardware variant and device 2277 * revision information are used to select the right firmware for SfP 2278 * and WsP. 2279 * 2280 * The firmware filename is ibt-<hw_variant>-<dev_revid>.sfi. 2281 * 2282 * Currently the supported hardware variants are: 2283 * 11 (0x0b) for iBT3.0 (LnP/SfP) 2284 * 12 (0x0c) for iBT3.5 (WsP) 2285 * 2286 * For ThP/JfP and for future SKU's, the FW name varies based on HW 2287 * variant, HW revision and FW revision, as these are dependent on CNVi 2288 * and RF Combination. 2289 * 2290 * 17 (0x11) for iBT3.5 (JfP) 2291 * 18 (0x12) for iBT3.5 (ThP) 2292 * 2293 * The firmware file name for these will be 2294 * ibt-<hw_variant>-<hw_revision>-<fw_revision>.sfi. 2295 * 2296 */ 2297 err = btusb_setup_intel_new_get_fw_name(&ver, ¶ms, fwname, 2298 sizeof(fwname), "sfi"); 2299 if (!err) { 2300 bt_dev_err(hdev, "Unsupported Intel firmware naming"); 2301 return -EINVAL; 2302 } 2303 2304 err = request_firmware(&fw, fwname, &hdev->dev); 2305 if (err < 0) { 2306 bt_dev_err(hdev, "Failed to load Intel firmware file (%d)", err); 2307 return err; 2308 } 2309 2310 bt_dev_info(hdev, "Found device firmware: %s", fwname); 2311 2312 /* Save the DDC file name for later use to apply once the firmware 2313 * downloading is done. 2314 */ 2315 err = btusb_setup_intel_new_get_fw_name(&ver, ¶ms, fwname, 2316 sizeof(fwname), "ddc"); 2317 if (!err) { 2318 bt_dev_err(hdev, "Unsupported Intel firmware naming"); 2319 return -EINVAL; 2320 } 2321 2322 if (fw->size < 644) { 2323 bt_dev_err(hdev, "Invalid size of firmware file (%zu)", 2324 fw->size); 2325 err = -EBADF; 2326 goto done; 2327 } 2328 2329 set_bit(BTUSB_DOWNLOADING, &data->flags); 2330 2331 /* Start firmware downloading and get boot parameter */ 2332 err = btintel_download_firmware(hdev, fw, &boot_param); 2333 if (err < 0) { 2334 /* When FW download fails, send Intel Reset to retry 2335 * FW download. 2336 */ 2337 btintel_reset_to_bootloader(hdev); 2338 goto done; 2339 } 2340 set_bit(BTUSB_FIRMWARE_LOADED, &data->flags); 2341 2342 bt_dev_info(hdev, "Waiting for firmware download to complete"); 2343 2344 /* Before switching the device into operational mode and with that 2345 * booting the loaded firmware, wait for the bootloader notification 2346 * that all fragments have been successfully received. 2347 * 2348 * When the event processing receives the notification, then the 2349 * BTUSB_DOWNLOADING flag will be cleared. 2350 * 2351 * The firmware loading should not take longer than 5 seconds 2352 * and thus just timeout if that happens and fail the setup 2353 * of this device. 2354 */ 2355 err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING, 2356 TASK_INTERRUPTIBLE, 2357 msecs_to_jiffies(5000)); 2358 if (err == -EINTR) { 2359 bt_dev_err(hdev, "Firmware loading interrupted"); 2360 goto done; 2361 } 2362 2363 if (err) { 2364 bt_dev_err(hdev, "Firmware loading timeout"); 2365 err = -ETIMEDOUT; 2366 btintel_reset_to_bootloader(hdev); 2367 goto done; 2368 } 2369 2370 if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) { 2371 bt_dev_err(hdev, "Firmware loading failed"); 2372 err = -ENOEXEC; 2373 goto done; 2374 } 2375 2376 rettime = ktime_get(); 2377 delta = ktime_sub(rettime, calltime); 2378 duration = (unsigned long long) ktime_to_ns(delta) >> 10; 2379 2380 bt_dev_info(hdev, "Firmware loaded in %llu usecs", duration); 2381 2382 done: 2383 release_firmware(fw); 2384 2385 if (err < 0) 2386 return err; 2387 2388 calltime = ktime_get(); 2389 2390 set_bit(BTUSB_BOOTING, &data->flags); 2391 2392 err = btintel_send_intel_reset(hdev, boot_param); 2393 if (err) { 2394 bt_dev_err(hdev, "Intel Soft Reset failed (%d)", err); 2395 btintel_reset_to_bootloader(hdev); 2396 return err; 2397 } 2398 2399 /* The bootloader will not indicate when the device is ready. This 2400 * is done by the operational firmware sending bootup notification. 2401 * 2402 * Booting into operational firmware should not take longer than 2403 * 1 second. However if that happens, then just fail the setup 2404 * since something went wrong. 2405 */ 2406 bt_dev_info(hdev, "Waiting for device to boot"); 2407 2408 err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING, 2409 TASK_INTERRUPTIBLE, 2410 msecs_to_jiffies(1000)); 2411 2412 if (err == -EINTR) { 2413 bt_dev_err(hdev, "Device boot interrupted"); 2414 return -EINTR; 2415 } 2416 2417 if (err) { 2418 bt_dev_err(hdev, "Device boot timeout"); 2419 btintel_reset_to_bootloader(hdev); 2420 return -ETIMEDOUT; 2421 } 2422 2423 rettime = ktime_get(); 2424 delta = ktime_sub(rettime, calltime); 2425 duration = (unsigned long long) ktime_to_ns(delta) >> 10; 2426 2427 bt_dev_info(hdev, "Device booted in %llu usecs", duration); 2428 2429 clear_bit(BTUSB_BOOTLOADER, &data->flags); 2430 2431 /* Once the device is running in operational mode, it needs to apply 2432 * the device configuration (DDC) parameters. 2433 * 2434 * The device can work without DDC parameters, so even if it fails 2435 * to load the file, no need to fail the setup. 2436 */ 2437 btintel_load_ddc_config(hdev, fwname); 2438 2439 /* Set the event mask for Intel specific vendor events. This enables 2440 * a few extra events that are useful during general operation. It 2441 * does not enable any debugging related events. 2442 * 2443 * The device will function correctly without these events enabled 2444 * and thus no need to fail the setup. 2445 */ 2446 btintel_set_event_mask(hdev, false); 2447 2448 /* Read the Intel version information after loading the FW */ 2449 err = btintel_read_version(hdev, &ver); 2450 if (err) 2451 return err; 2452 2453 btintel_version_info(hdev, &ver); 2454 2455 return 0; 2456 } 2457 2458 static int btusb_shutdown_intel(struct hci_dev *hdev) 2459 { 2460 struct sk_buff *skb; 2461 long ret; 2462 2463 /* In the shutdown sequence where Bluetooth is turned off followed 2464 * by WiFi being turned off, turning WiFi back on causes issue with 2465 * the RF calibration. 2466 * 2467 * To ensure that any RF activity has been stopped, issue HCI Reset 2468 * command to clear all ongoing activity including advertising, 2469 * scanning etc. 2470 */ 2471 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT); 2472 if (IS_ERR(skb)) { 2473 ret = PTR_ERR(skb); 2474 bt_dev_err(hdev, "HCI reset during shutdown failed"); 2475 return ret; 2476 } 2477 kfree_skb(skb); 2478 2479 /* Some platforms have an issue with BT LED when the interface is 2480 * down or BT radio is turned off, which takes 5 seconds to BT LED 2481 * goes off. This command turns off the BT LED immediately. 2482 */ 2483 skb = __hci_cmd_sync(hdev, 0xfc3f, 0, NULL, HCI_INIT_TIMEOUT); 2484 if (IS_ERR(skb)) { 2485 ret = PTR_ERR(skb); 2486 bt_dev_err(hdev, "turning off Intel device LED failed"); 2487 return ret; 2488 } 2489 kfree_skb(skb); 2490 2491 return 0; 2492 } 2493 2494 static int btusb_shutdown_intel_new(struct hci_dev *hdev) 2495 { 2496 struct sk_buff *skb; 2497 2498 /* Send HCI Reset to the controller to stop any BT activity which 2499 * were triggered. This will help to save power and maintain the 2500 * sync b/w Host and controller 2501 */ 2502 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT); 2503 if (IS_ERR(skb)) { 2504 bt_dev_err(hdev, "HCI reset during shutdown failed"); 2505 return PTR_ERR(skb); 2506 } 2507 kfree_skb(skb); 2508 2509 return 0; 2510 } 2511 2512 #define FIRMWARE_MT7663 "mediatek/mt7663pr2h.bin" 2513 #define FIRMWARE_MT7668 "mediatek/mt7668pr2h.bin" 2514 2515 #define HCI_WMT_MAX_EVENT_SIZE 64 2516 2517 enum { 2518 BTMTK_WMT_PATCH_DWNLD = 0x1, 2519 BTMTK_WMT_FUNC_CTRL = 0x6, 2520 BTMTK_WMT_RST = 0x7, 2521 BTMTK_WMT_SEMAPHORE = 0x17, 2522 }; 2523 2524 enum { 2525 BTMTK_WMT_INVALID, 2526 BTMTK_WMT_PATCH_UNDONE, 2527 BTMTK_WMT_PATCH_DONE, 2528 BTMTK_WMT_ON_UNDONE, 2529 BTMTK_WMT_ON_DONE, 2530 BTMTK_WMT_ON_PROGRESS, 2531 }; 2532 2533 struct btmtk_wmt_hdr { 2534 u8 dir; 2535 u8 op; 2536 __le16 dlen; 2537 u8 flag; 2538 } __packed; 2539 2540 struct btmtk_hci_wmt_cmd { 2541 struct btmtk_wmt_hdr hdr; 2542 u8 data[256]; 2543 } __packed; 2544 2545 struct btmtk_hci_wmt_evt { 2546 struct hci_event_hdr hhdr; 2547 struct btmtk_wmt_hdr whdr; 2548 } __packed; 2549 2550 struct btmtk_hci_wmt_evt_funcc { 2551 struct btmtk_hci_wmt_evt hwhdr; 2552 __be16 status; 2553 } __packed; 2554 2555 struct btmtk_tci_sleep { 2556 u8 mode; 2557 __le16 duration; 2558 __le16 host_duration; 2559 u8 host_wakeup_pin; 2560 u8 time_compensation; 2561 } __packed; 2562 2563 struct btmtk_hci_wmt_params { 2564 u8 op; 2565 u8 flag; 2566 u16 dlen; 2567 const void *data; 2568 u32 *status; 2569 }; 2570 2571 static void btusb_mtk_wmt_recv(struct urb *urb) 2572 { 2573 struct hci_dev *hdev = urb->context; 2574 struct btusb_data *data = hci_get_drvdata(hdev); 2575 struct hci_event_hdr *hdr; 2576 struct sk_buff *skb; 2577 int err; 2578 2579 if (urb->status == 0 && urb->actual_length > 0) { 2580 hdev->stat.byte_rx += urb->actual_length; 2581 2582 /* WMT event shouldn't be fragmented and the size should be 2583 * less than HCI_WMT_MAX_EVENT_SIZE. 2584 */ 2585 skb = bt_skb_alloc(HCI_WMT_MAX_EVENT_SIZE, GFP_ATOMIC); 2586 if (!skb) { 2587 hdev->stat.err_rx++; 2588 goto err_out; 2589 } 2590 2591 hci_skb_pkt_type(skb) = HCI_EVENT_PKT; 2592 skb_put_data(skb, urb->transfer_buffer, urb->actual_length); 2593 2594 hdr = (void *)skb->data; 2595 /* Fix up the vendor event id with 0xff for vendor specific 2596 * instead of 0xe4 so that event send via monitoring socket can 2597 * be parsed properly. 2598 */ 2599 hdr->evt = 0xff; 2600 2601 /* When someone waits for the WMT event, the skb is being cloned 2602 * and being processed the events from there then. 2603 */ 2604 if (test_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags)) { 2605 data->evt_skb = skb_clone(skb, GFP_KERNEL); 2606 if (!data->evt_skb) 2607 goto err_out; 2608 } 2609 2610 err = hci_recv_frame(hdev, skb); 2611 if (err < 0) 2612 goto err_free_skb; 2613 2614 if (test_and_clear_bit(BTUSB_TX_WAIT_VND_EVT, 2615 &data->flags)) { 2616 /* Barrier to sync with other CPUs */ 2617 smp_mb__after_atomic(); 2618 wake_up_bit(&data->flags, 2619 BTUSB_TX_WAIT_VND_EVT); 2620 } 2621 err_out: 2622 return; 2623 err_free_skb: 2624 kfree_skb(data->evt_skb); 2625 data->evt_skb = NULL; 2626 return; 2627 } else if (urb->status == -ENOENT) { 2628 /* Avoid suspend failed when usb_kill_urb */ 2629 return; 2630 } 2631 2632 usb_mark_last_busy(data->udev); 2633 2634 /* The URB complete handler is still called with urb->actual_length = 0 2635 * when the event is not available, so we should keep re-submitting 2636 * URB until WMT event returns, Also, It's necessary to wait some time 2637 * between the two consecutive control URBs to relax the target device 2638 * to generate the event. Otherwise, the WMT event cannot return from 2639 * the device successfully. 2640 */ 2641 udelay(100); 2642 2643 usb_anchor_urb(urb, &data->ctrl_anchor); 2644 err = usb_submit_urb(urb, GFP_ATOMIC); 2645 if (err < 0) { 2646 /* -EPERM: urb is being killed; 2647 * -ENODEV: device got disconnected 2648 */ 2649 if (err != -EPERM && err != -ENODEV) 2650 bt_dev_err(hdev, "urb %p failed to resubmit (%d)", 2651 urb, -err); 2652 usb_unanchor_urb(urb); 2653 } 2654 } 2655 2656 static int btusb_mtk_submit_wmt_recv_urb(struct hci_dev *hdev) 2657 { 2658 struct btusb_data *data = hci_get_drvdata(hdev); 2659 struct usb_ctrlrequest *dr; 2660 unsigned char *buf; 2661 int err, size = 64; 2662 unsigned int pipe; 2663 struct urb *urb; 2664 2665 urb = usb_alloc_urb(0, GFP_KERNEL); 2666 if (!urb) 2667 return -ENOMEM; 2668 2669 dr = kmalloc(sizeof(*dr), GFP_KERNEL); 2670 if (!dr) { 2671 usb_free_urb(urb); 2672 return -ENOMEM; 2673 } 2674 2675 dr->bRequestType = USB_TYPE_VENDOR | USB_DIR_IN; 2676 dr->bRequest = 1; 2677 dr->wIndex = cpu_to_le16(0); 2678 dr->wValue = cpu_to_le16(48); 2679 dr->wLength = cpu_to_le16(size); 2680 2681 buf = kmalloc(size, GFP_KERNEL); 2682 if (!buf) { 2683 kfree(dr); 2684 return -ENOMEM; 2685 } 2686 2687 pipe = usb_rcvctrlpipe(data->udev, 0); 2688 2689 usb_fill_control_urb(urb, data->udev, pipe, (void *)dr, 2690 buf, size, btusb_mtk_wmt_recv, hdev); 2691 2692 urb->transfer_flags |= URB_FREE_BUFFER; 2693 2694 usb_anchor_urb(urb, &data->ctrl_anchor); 2695 err = usb_submit_urb(urb, GFP_KERNEL); 2696 if (err < 0) { 2697 if (err != -EPERM && err != -ENODEV) 2698 bt_dev_err(hdev, "urb %p submission failed (%d)", 2699 urb, -err); 2700 usb_unanchor_urb(urb); 2701 } 2702 2703 usb_free_urb(urb); 2704 2705 return err; 2706 } 2707 2708 static int btusb_mtk_hci_wmt_sync(struct hci_dev *hdev, 2709 struct btmtk_hci_wmt_params *wmt_params) 2710 { 2711 struct btusb_data *data = hci_get_drvdata(hdev); 2712 struct btmtk_hci_wmt_evt_funcc *wmt_evt_funcc; 2713 u32 hlen, status = BTMTK_WMT_INVALID; 2714 struct btmtk_hci_wmt_evt *wmt_evt; 2715 struct btmtk_hci_wmt_cmd wc; 2716 struct btmtk_wmt_hdr *hdr; 2717 int err; 2718 2719 /* Submit control IN URB on demand to process the WMT event */ 2720 err = btusb_mtk_submit_wmt_recv_urb(hdev); 2721 if (err < 0) 2722 return err; 2723 2724 /* Send the WMT command and wait until the WMT event returns */ 2725 hlen = sizeof(*hdr) + wmt_params->dlen; 2726 if (hlen > 255) 2727 return -EINVAL; 2728 2729 hdr = (struct btmtk_wmt_hdr *)&wc; 2730 hdr->dir = 1; 2731 hdr->op = wmt_params->op; 2732 hdr->dlen = cpu_to_le16(wmt_params->dlen + 1); 2733 hdr->flag = wmt_params->flag; 2734 memcpy(wc.data, wmt_params->data, wmt_params->dlen); 2735 2736 set_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags); 2737 2738 err = __hci_cmd_send(hdev, 0xfc6f, hlen, &wc); 2739 2740 if (err < 0) { 2741 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags); 2742 return err; 2743 } 2744 2745 /* The vendor specific WMT commands are all answered by a vendor 2746 * specific event and will have the Command Status or Command 2747 * Complete as with usual HCI command flow control. 2748 * 2749 * After sending the command, wait for BTUSB_TX_WAIT_VND_EVT 2750 * state to be cleared. The driver specific event receive routine 2751 * will clear that state and with that indicate completion of the 2752 * WMT command. 2753 */ 2754 err = wait_on_bit_timeout(&data->flags, BTUSB_TX_WAIT_VND_EVT, 2755 TASK_INTERRUPTIBLE, HCI_INIT_TIMEOUT); 2756 if (err == -EINTR) { 2757 bt_dev_err(hdev, "Execution of wmt command interrupted"); 2758 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags); 2759 return err; 2760 } 2761 2762 if (err) { 2763 bt_dev_err(hdev, "Execution of wmt command timed out"); 2764 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags); 2765 return -ETIMEDOUT; 2766 } 2767 2768 /* Parse and handle the return WMT event */ 2769 wmt_evt = (struct btmtk_hci_wmt_evt *)data->evt_skb->data; 2770 if (wmt_evt->whdr.op != hdr->op) { 2771 bt_dev_err(hdev, "Wrong op received %d expected %d", 2772 wmt_evt->whdr.op, hdr->op); 2773 err = -EIO; 2774 goto err_free_skb; 2775 } 2776 2777 switch (wmt_evt->whdr.op) { 2778 case BTMTK_WMT_SEMAPHORE: 2779 if (wmt_evt->whdr.flag == 2) 2780 status = BTMTK_WMT_PATCH_UNDONE; 2781 else 2782 status = BTMTK_WMT_PATCH_DONE; 2783 break; 2784 case BTMTK_WMT_FUNC_CTRL: 2785 wmt_evt_funcc = (struct btmtk_hci_wmt_evt_funcc *)wmt_evt; 2786 if (be16_to_cpu(wmt_evt_funcc->status) == 0x404) 2787 status = BTMTK_WMT_ON_DONE; 2788 else if (be16_to_cpu(wmt_evt_funcc->status) == 0x420) 2789 status = BTMTK_WMT_ON_PROGRESS; 2790 else 2791 status = BTMTK_WMT_ON_UNDONE; 2792 break; 2793 } 2794 2795 if (wmt_params->status) 2796 *wmt_params->status = status; 2797 2798 err_free_skb: 2799 kfree_skb(data->evt_skb); 2800 data->evt_skb = NULL; 2801 2802 return err; 2803 } 2804 2805 static int btusb_mtk_setup_firmware(struct hci_dev *hdev, const char *fwname) 2806 { 2807 struct btmtk_hci_wmt_params wmt_params; 2808 const struct firmware *fw; 2809 const u8 *fw_ptr; 2810 size_t fw_size; 2811 int err, dlen; 2812 u8 flag; 2813 2814 err = request_firmware(&fw, fwname, &hdev->dev); 2815 if (err < 0) { 2816 bt_dev_err(hdev, "Failed to load firmware file (%d)", err); 2817 return err; 2818 } 2819 2820 fw_ptr = fw->data; 2821 fw_size = fw->size; 2822 2823 /* The size of patch header is 30 bytes, should be skip */ 2824 if (fw_size < 30) { 2825 err = -EINVAL; 2826 goto err_release_fw; 2827 } 2828 2829 fw_size -= 30; 2830 fw_ptr += 30; 2831 flag = 1; 2832 2833 wmt_params.op = BTMTK_WMT_PATCH_DWNLD; 2834 wmt_params.status = NULL; 2835 2836 while (fw_size > 0) { 2837 dlen = min_t(int, 250, fw_size); 2838 2839 /* Tell deivice the position in sequence */ 2840 if (fw_size - dlen <= 0) 2841 flag = 3; 2842 else if (fw_size < fw->size - 30) 2843 flag = 2; 2844 2845 wmt_params.flag = flag; 2846 wmt_params.dlen = dlen; 2847 wmt_params.data = fw_ptr; 2848 2849 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params); 2850 if (err < 0) { 2851 bt_dev_err(hdev, "Failed to send wmt patch dwnld (%d)", 2852 err); 2853 goto err_release_fw; 2854 } 2855 2856 fw_size -= dlen; 2857 fw_ptr += dlen; 2858 } 2859 2860 wmt_params.op = BTMTK_WMT_RST; 2861 wmt_params.flag = 4; 2862 wmt_params.dlen = 0; 2863 wmt_params.data = NULL; 2864 wmt_params.status = NULL; 2865 2866 /* Activate funciton the firmware providing to */ 2867 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params); 2868 if (err < 0) { 2869 bt_dev_err(hdev, "Failed to send wmt rst (%d)", err); 2870 return err; 2871 } 2872 2873 /* Wait a few moments for firmware activation done */ 2874 usleep_range(10000, 12000); 2875 2876 err_release_fw: 2877 release_firmware(fw); 2878 2879 return err; 2880 } 2881 2882 static int btusb_mtk_func_query(struct hci_dev *hdev) 2883 { 2884 struct btmtk_hci_wmt_params wmt_params; 2885 int status, err; 2886 u8 param = 0; 2887 2888 /* Query whether the function is enabled */ 2889 wmt_params.op = BTMTK_WMT_FUNC_CTRL; 2890 wmt_params.flag = 4; 2891 wmt_params.dlen = sizeof(param); 2892 wmt_params.data = ¶m; 2893 wmt_params.status = &status; 2894 2895 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params); 2896 if (err < 0) { 2897 bt_dev_err(hdev, "Failed to query function status (%d)", err); 2898 return err; 2899 } 2900 2901 return status; 2902 } 2903 2904 static int btusb_mtk_reg_read(struct btusb_data *data, u32 reg, u32 *val) 2905 { 2906 int pipe, err, size = sizeof(u32); 2907 void *buf; 2908 2909 buf = kzalloc(size, GFP_KERNEL); 2910 if (!buf) 2911 return -ENOMEM; 2912 2913 pipe = usb_rcvctrlpipe(data->udev, 0); 2914 err = usb_control_msg(data->udev, pipe, 0x63, 2915 USB_TYPE_VENDOR | USB_DIR_IN, 2916 reg >> 16, reg & 0xffff, 2917 buf, size, USB_CTRL_SET_TIMEOUT); 2918 if (err < 0) 2919 goto err_free_buf; 2920 2921 *val = get_unaligned_le32(buf); 2922 2923 err_free_buf: 2924 kfree(buf); 2925 2926 return err; 2927 } 2928 2929 static int btusb_mtk_id_get(struct btusb_data *data, u32 *id) 2930 { 2931 return btusb_mtk_reg_read(data, 0x80000008, id); 2932 } 2933 2934 static int btusb_mtk_setup(struct hci_dev *hdev) 2935 { 2936 struct btusb_data *data = hci_get_drvdata(hdev); 2937 struct btmtk_hci_wmt_params wmt_params; 2938 ktime_t calltime, delta, rettime; 2939 struct btmtk_tci_sleep tci_sleep; 2940 unsigned long long duration; 2941 struct sk_buff *skb; 2942 const char *fwname; 2943 int err, status; 2944 u32 dev_id; 2945 u8 param; 2946 2947 calltime = ktime_get(); 2948 2949 err = btusb_mtk_id_get(data, &dev_id); 2950 if (err < 0) { 2951 bt_dev_err(hdev, "Failed to get device id (%d)", err); 2952 return err; 2953 } 2954 2955 switch (dev_id) { 2956 case 0x7663: 2957 fwname = FIRMWARE_MT7663; 2958 break; 2959 case 0x7668: 2960 fwname = FIRMWARE_MT7668; 2961 break; 2962 default: 2963 bt_dev_err(hdev, "Unsupported support hardware variant (%08x)", 2964 dev_id); 2965 return -ENODEV; 2966 } 2967 2968 /* Query whether the firmware is already download */ 2969 wmt_params.op = BTMTK_WMT_SEMAPHORE; 2970 wmt_params.flag = 1; 2971 wmt_params.dlen = 0; 2972 wmt_params.data = NULL; 2973 wmt_params.status = &status; 2974 2975 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params); 2976 if (err < 0) { 2977 bt_dev_err(hdev, "Failed to query firmware status (%d)", err); 2978 return err; 2979 } 2980 2981 if (status == BTMTK_WMT_PATCH_DONE) { 2982 bt_dev_info(hdev, "firmware already downloaded"); 2983 goto ignore_setup_fw; 2984 } 2985 2986 /* Setup a firmware which the device definitely requires */ 2987 err = btusb_mtk_setup_firmware(hdev, fwname); 2988 if (err < 0) 2989 return err; 2990 2991 ignore_setup_fw: 2992 err = readx_poll_timeout(btusb_mtk_func_query, hdev, status, 2993 status < 0 || status != BTMTK_WMT_ON_PROGRESS, 2994 2000, 5000000); 2995 /* -ETIMEDOUT happens */ 2996 if (err < 0) 2997 return err; 2998 2999 /* The other errors happen in btusb_mtk_func_query */ 3000 if (status < 0) 3001 return status; 3002 3003 if (status == BTMTK_WMT_ON_DONE) { 3004 bt_dev_info(hdev, "function already on"); 3005 goto ignore_func_on; 3006 } 3007 3008 /* Enable Bluetooth protocol */ 3009 param = 1; 3010 wmt_params.op = BTMTK_WMT_FUNC_CTRL; 3011 wmt_params.flag = 0; 3012 wmt_params.dlen = sizeof(param); 3013 wmt_params.data = ¶m; 3014 wmt_params.status = NULL; 3015 3016 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params); 3017 if (err < 0) { 3018 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err); 3019 return err; 3020 } 3021 3022 ignore_func_on: 3023 /* Apply the low power environment setup */ 3024 tci_sleep.mode = 0x5; 3025 tci_sleep.duration = cpu_to_le16(0x640); 3026 tci_sleep.host_duration = cpu_to_le16(0x640); 3027 tci_sleep.host_wakeup_pin = 0; 3028 tci_sleep.time_compensation = 0; 3029 3030 skb = __hci_cmd_sync(hdev, 0xfc7a, sizeof(tci_sleep), &tci_sleep, 3031 HCI_INIT_TIMEOUT); 3032 if (IS_ERR(skb)) { 3033 err = PTR_ERR(skb); 3034 bt_dev_err(hdev, "Failed to apply low power setting (%d)", err); 3035 return err; 3036 } 3037 kfree_skb(skb); 3038 3039 rettime = ktime_get(); 3040 delta = ktime_sub(rettime, calltime); 3041 duration = (unsigned long long)ktime_to_ns(delta) >> 10; 3042 3043 bt_dev_info(hdev, "Device setup in %llu usecs", duration); 3044 3045 return 0; 3046 } 3047 3048 static int btusb_mtk_shutdown(struct hci_dev *hdev) 3049 { 3050 struct btmtk_hci_wmt_params wmt_params; 3051 u8 param = 0; 3052 int err; 3053 3054 /* Disable the device */ 3055 wmt_params.op = BTMTK_WMT_FUNC_CTRL; 3056 wmt_params.flag = 0; 3057 wmt_params.dlen = sizeof(param); 3058 wmt_params.data = ¶m; 3059 wmt_params.status = NULL; 3060 3061 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params); 3062 if (err < 0) { 3063 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err); 3064 return err; 3065 } 3066 3067 return 0; 3068 } 3069 3070 MODULE_FIRMWARE(FIRMWARE_MT7663); 3071 MODULE_FIRMWARE(FIRMWARE_MT7668); 3072 3073 #ifdef CONFIG_PM 3074 /* Configure an out-of-band gpio as wake-up pin, if specified in device tree */ 3075 static int marvell_config_oob_wake(struct hci_dev *hdev) 3076 { 3077 struct sk_buff *skb; 3078 struct btusb_data *data = hci_get_drvdata(hdev); 3079 struct device *dev = &data->udev->dev; 3080 u16 pin, gap, opcode; 3081 int ret; 3082 u8 cmd[5]; 3083 3084 /* Move on if no wakeup pin specified */ 3085 if (of_property_read_u16(dev->of_node, "marvell,wakeup-pin", &pin) || 3086 of_property_read_u16(dev->of_node, "marvell,wakeup-gap-ms", &gap)) 3087 return 0; 3088 3089 /* Vendor specific command to configure a GPIO as wake-up pin */ 3090 opcode = hci_opcode_pack(0x3F, 0x59); 3091 cmd[0] = opcode & 0xFF; 3092 cmd[1] = opcode >> 8; 3093 cmd[2] = 2; /* length of parameters that follow */ 3094 cmd[3] = pin; 3095 cmd[4] = gap; /* time in ms, for which wakeup pin should be asserted */ 3096 3097 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL); 3098 if (!skb) { 3099 bt_dev_err(hdev, "%s: No memory\n", __func__); 3100 return -ENOMEM; 3101 } 3102 3103 skb_put_data(skb, cmd, sizeof(cmd)); 3104 hci_skb_pkt_type(skb) = HCI_COMMAND_PKT; 3105 3106 ret = btusb_send_frame(hdev, skb); 3107 if (ret) { 3108 bt_dev_err(hdev, "%s: configuration failed\n", __func__); 3109 kfree_skb(skb); 3110 return ret; 3111 } 3112 3113 return 0; 3114 } 3115 #endif 3116 3117 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev, 3118 const bdaddr_t *bdaddr) 3119 { 3120 struct sk_buff *skb; 3121 u8 buf[8]; 3122 long ret; 3123 3124 buf[0] = 0xfe; 3125 buf[1] = sizeof(bdaddr_t); 3126 memcpy(buf + 2, bdaddr, sizeof(bdaddr_t)); 3127 3128 skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT); 3129 if (IS_ERR(skb)) { 3130 ret = PTR_ERR(skb); 3131 bt_dev_err(hdev, "changing Marvell device address failed (%ld)", 3132 ret); 3133 return ret; 3134 } 3135 kfree_skb(skb); 3136 3137 return 0; 3138 } 3139 3140 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev, 3141 const bdaddr_t *bdaddr) 3142 { 3143 struct sk_buff *skb; 3144 u8 buf[10]; 3145 long ret; 3146 3147 buf[0] = 0x01; 3148 buf[1] = 0x01; 3149 buf[2] = 0x00; 3150 buf[3] = sizeof(bdaddr_t); 3151 memcpy(buf + 4, bdaddr, sizeof(bdaddr_t)); 3152 3153 skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT); 3154 if (IS_ERR(skb)) { 3155 ret = PTR_ERR(skb); 3156 bt_dev_err(hdev, "Change address command failed (%ld)", ret); 3157 return ret; 3158 } 3159 kfree_skb(skb); 3160 3161 return 0; 3162 } 3163 3164 #define QCA_DFU_PACKET_LEN 4096 3165 3166 #define QCA_GET_TARGET_VERSION 0x09 3167 #define QCA_CHECK_STATUS 0x05 3168 #define QCA_DFU_DOWNLOAD 0x01 3169 3170 #define QCA_SYSCFG_UPDATED 0x40 3171 #define QCA_PATCH_UPDATED 0x80 3172 #define QCA_DFU_TIMEOUT 3000 3173 3174 struct qca_version { 3175 __le32 rom_version; 3176 __le32 patch_version; 3177 __le32 ram_version; 3178 __le32 ref_clock; 3179 __u8 reserved[4]; 3180 } __packed; 3181 3182 struct qca_rampatch_version { 3183 __le16 rom_version; 3184 __le16 patch_version; 3185 } __packed; 3186 3187 struct qca_device_info { 3188 u32 rom_version; 3189 u8 rampatch_hdr; /* length of header in rampatch */ 3190 u8 nvm_hdr; /* length of header in NVM */ 3191 u8 ver_offset; /* offset of version structure in rampatch */ 3192 }; 3193 3194 static const struct qca_device_info qca_devices_table[] = { 3195 { 0x00000100, 20, 4, 10 }, /* Rome 1.0 */ 3196 { 0x00000101, 20, 4, 10 }, /* Rome 1.1 */ 3197 { 0x00000200, 28, 4, 18 }, /* Rome 2.0 */ 3198 { 0x00000201, 28, 4, 18 }, /* Rome 2.1 */ 3199 { 0x00000300, 28, 4, 18 }, /* Rome 3.0 */ 3200 { 0x00000302, 28, 4, 18 }, /* Rome 3.2 */ 3201 }; 3202 3203 static int btusb_qca_send_vendor_req(struct usb_device *udev, u8 request, 3204 void *data, u16 size) 3205 { 3206 int pipe, err; 3207 u8 *buf; 3208 3209 buf = kmalloc(size, GFP_KERNEL); 3210 if (!buf) 3211 return -ENOMEM; 3212 3213 /* Found some of USB hosts have IOT issues with ours so that we should 3214 * not wait until HCI layer is ready. 3215 */ 3216 pipe = usb_rcvctrlpipe(udev, 0); 3217 err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN, 3218 0, 0, buf, size, USB_CTRL_SET_TIMEOUT); 3219 if (err < 0) { 3220 dev_err(&udev->dev, "Failed to access otp area (%d)", err); 3221 goto done; 3222 } 3223 3224 memcpy(data, buf, size); 3225 3226 done: 3227 kfree(buf); 3228 3229 return err; 3230 } 3231 3232 static int btusb_setup_qca_download_fw(struct hci_dev *hdev, 3233 const struct firmware *firmware, 3234 size_t hdr_size) 3235 { 3236 struct btusb_data *btdata = hci_get_drvdata(hdev); 3237 struct usb_device *udev = btdata->udev; 3238 size_t count, size, sent = 0; 3239 int pipe, len, err; 3240 u8 *buf; 3241 3242 buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL); 3243 if (!buf) 3244 return -ENOMEM; 3245 3246 count = firmware->size; 3247 3248 size = min_t(size_t, count, hdr_size); 3249 memcpy(buf, firmware->data, size); 3250 3251 /* USB patches should go down to controller through USB path 3252 * because binary format fits to go down through USB channel. 3253 * USB control path is for patching headers and USB bulk is for 3254 * patch body. 3255 */ 3256 pipe = usb_sndctrlpipe(udev, 0); 3257 err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR, 3258 0, 0, buf, size, USB_CTRL_SET_TIMEOUT); 3259 if (err < 0) { 3260 bt_dev_err(hdev, "Failed to send headers (%d)", err); 3261 goto done; 3262 } 3263 3264 sent += size; 3265 count -= size; 3266 3267 while (count) { 3268 size = min_t(size_t, count, QCA_DFU_PACKET_LEN); 3269 3270 memcpy(buf, firmware->data + sent, size); 3271 3272 pipe = usb_sndbulkpipe(udev, 0x02); 3273 err = usb_bulk_msg(udev, pipe, buf, size, &len, 3274 QCA_DFU_TIMEOUT); 3275 if (err < 0) { 3276 bt_dev_err(hdev, "Failed to send body at %zd of %zd (%d)", 3277 sent, firmware->size, err); 3278 break; 3279 } 3280 3281 if (size != len) { 3282 bt_dev_err(hdev, "Failed to get bulk buffer"); 3283 err = -EILSEQ; 3284 break; 3285 } 3286 3287 sent += size; 3288 count -= size; 3289 } 3290 3291 done: 3292 kfree(buf); 3293 return err; 3294 } 3295 3296 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev, 3297 struct qca_version *ver, 3298 const struct qca_device_info *info) 3299 { 3300 struct qca_rampatch_version *rver; 3301 const struct firmware *fw; 3302 u32 ver_rom, ver_patch; 3303 u16 rver_rom, rver_patch; 3304 char fwname[64]; 3305 int err; 3306 3307 ver_rom = le32_to_cpu(ver->rom_version); 3308 ver_patch = le32_to_cpu(ver->patch_version); 3309 3310 snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom); 3311 3312 err = request_firmware(&fw, fwname, &hdev->dev); 3313 if (err) { 3314 bt_dev_err(hdev, "failed to request rampatch file: %s (%d)", 3315 fwname, err); 3316 return err; 3317 } 3318 3319 bt_dev_info(hdev, "using rampatch file: %s", fwname); 3320 3321 rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset); 3322 rver_rom = le16_to_cpu(rver->rom_version); 3323 rver_patch = le16_to_cpu(rver->patch_version); 3324 3325 bt_dev_info(hdev, "QCA: patch rome 0x%x build 0x%x, " 3326 "firmware rome 0x%x build 0x%x", 3327 rver_rom, rver_patch, ver_rom, ver_patch); 3328 3329 if (rver_rom != ver_rom || rver_patch <= ver_patch) { 3330 bt_dev_err(hdev, "rampatch file version did not match with firmware"); 3331 err = -EINVAL; 3332 goto done; 3333 } 3334 3335 err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr); 3336 3337 done: 3338 release_firmware(fw); 3339 3340 return err; 3341 } 3342 3343 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev, 3344 struct qca_version *ver, 3345 const struct qca_device_info *info) 3346 { 3347 const struct firmware *fw; 3348 char fwname[64]; 3349 int err; 3350 3351 snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x.bin", 3352 le32_to_cpu(ver->rom_version)); 3353 3354 err = request_firmware(&fw, fwname, &hdev->dev); 3355 if (err) { 3356 bt_dev_err(hdev, "failed to request NVM file: %s (%d)", 3357 fwname, err); 3358 return err; 3359 } 3360 3361 bt_dev_info(hdev, "using NVM file: %s", fwname); 3362 3363 err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr); 3364 3365 release_firmware(fw); 3366 3367 return err; 3368 } 3369 3370 /* identify the ROM version and check whether patches are needed */ 3371 static bool btusb_qca_need_patch(struct usb_device *udev) 3372 { 3373 struct qca_version ver; 3374 3375 if (btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver, 3376 sizeof(ver)) < 0) 3377 return false; 3378 /* only low ROM versions need patches */ 3379 return !(le32_to_cpu(ver.rom_version) & ~0xffffU); 3380 } 3381 3382 static int btusb_setup_qca(struct hci_dev *hdev) 3383 { 3384 struct btusb_data *btdata = hci_get_drvdata(hdev); 3385 struct usb_device *udev = btdata->udev; 3386 const struct qca_device_info *info = NULL; 3387 struct qca_version ver; 3388 u32 ver_rom; 3389 u8 status; 3390 int i, err; 3391 3392 err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver, 3393 sizeof(ver)); 3394 if (err < 0) 3395 return err; 3396 3397 ver_rom = le32_to_cpu(ver.rom_version); 3398 /* Don't care about high ROM versions */ 3399 if (ver_rom & ~0xffffU) 3400 return 0; 3401 3402 for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) { 3403 if (ver_rom == qca_devices_table[i].rom_version) 3404 info = &qca_devices_table[i]; 3405 } 3406 if (!info) { 3407 bt_dev_err(hdev, "don't support firmware rome 0x%x", ver_rom); 3408 return -ENODEV; 3409 } 3410 3411 err = btusb_qca_send_vendor_req(udev, QCA_CHECK_STATUS, &status, 3412 sizeof(status)); 3413 if (err < 0) 3414 return err; 3415 3416 if (!(status & QCA_PATCH_UPDATED)) { 3417 err = btusb_setup_qca_load_rampatch(hdev, &ver, info); 3418 if (err < 0) 3419 return err; 3420 } 3421 3422 if (!(status & QCA_SYSCFG_UPDATED)) { 3423 err = btusb_setup_qca_load_nvm(hdev, &ver, info); 3424 if (err < 0) 3425 return err; 3426 } 3427 3428 return 0; 3429 } 3430 3431 static inline int __set_diag_interface(struct hci_dev *hdev) 3432 { 3433 struct btusb_data *data = hci_get_drvdata(hdev); 3434 struct usb_interface *intf = data->diag; 3435 int i; 3436 3437 if (!data->diag) 3438 return -ENODEV; 3439 3440 data->diag_tx_ep = NULL; 3441 data->diag_rx_ep = NULL; 3442 3443 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { 3444 struct usb_endpoint_descriptor *ep_desc; 3445 3446 ep_desc = &intf->cur_altsetting->endpoint[i].desc; 3447 3448 if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) { 3449 data->diag_tx_ep = ep_desc; 3450 continue; 3451 } 3452 3453 if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) { 3454 data->diag_rx_ep = ep_desc; 3455 continue; 3456 } 3457 } 3458 3459 if (!data->diag_tx_ep || !data->diag_rx_ep) { 3460 bt_dev_err(hdev, "invalid diagnostic descriptors"); 3461 return -ENODEV; 3462 } 3463 3464 return 0; 3465 } 3466 3467 static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable) 3468 { 3469 struct btusb_data *data = hci_get_drvdata(hdev); 3470 struct sk_buff *skb; 3471 struct urb *urb; 3472 unsigned int pipe; 3473 3474 if (!data->diag_tx_ep) 3475 return ERR_PTR(-ENODEV); 3476 3477 urb = usb_alloc_urb(0, GFP_KERNEL); 3478 if (!urb) 3479 return ERR_PTR(-ENOMEM); 3480 3481 skb = bt_skb_alloc(2, GFP_KERNEL); 3482 if (!skb) { 3483 usb_free_urb(urb); 3484 return ERR_PTR(-ENOMEM); 3485 } 3486 3487 skb_put_u8(skb, 0xf0); 3488 skb_put_u8(skb, enable); 3489 3490 pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress); 3491 3492 usb_fill_bulk_urb(urb, data->udev, pipe, 3493 skb->data, skb->len, btusb_tx_complete, skb); 3494 3495 skb->dev = (void *)hdev; 3496 3497 return urb; 3498 } 3499 3500 static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable) 3501 { 3502 struct btusb_data *data = hci_get_drvdata(hdev); 3503 struct urb *urb; 3504 3505 if (!data->diag) 3506 return -ENODEV; 3507 3508 if (!test_bit(HCI_RUNNING, &hdev->flags)) 3509 return -ENETDOWN; 3510 3511 urb = alloc_diag_urb(hdev, enable); 3512 if (IS_ERR(urb)) 3513 return PTR_ERR(urb); 3514 3515 return submit_or_queue_tx_urb(hdev, urb); 3516 } 3517 3518 #ifdef CONFIG_PM 3519 static irqreturn_t btusb_oob_wake_handler(int irq, void *priv) 3520 { 3521 struct btusb_data *data = priv; 3522 3523 pm_wakeup_event(&data->udev->dev, 0); 3524 pm_system_wakeup(); 3525 3526 /* Disable only if not already disabled (keep it balanced) */ 3527 if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) { 3528 disable_irq_nosync(irq); 3529 disable_irq_wake(irq); 3530 } 3531 return IRQ_HANDLED; 3532 } 3533 3534 static const struct of_device_id btusb_match_table[] = { 3535 { .compatible = "usb1286,204e" }, 3536 { .compatible = "usbcf3,e300" }, /* QCA6174A */ 3537 { .compatible = "usb4ca,301a" }, /* QCA6174A (Lite-On) */ 3538 { } 3539 }; 3540 MODULE_DEVICE_TABLE(of, btusb_match_table); 3541 3542 /* Use an oob wakeup pin? */ 3543 static int btusb_config_oob_wake(struct hci_dev *hdev) 3544 { 3545 struct btusb_data *data = hci_get_drvdata(hdev); 3546 struct device *dev = &data->udev->dev; 3547 int irq, ret; 3548 3549 clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags); 3550 3551 if (!of_match_device(btusb_match_table, dev)) 3552 return 0; 3553 3554 /* Move on if no IRQ specified */ 3555 irq = of_irq_get_byname(dev->of_node, "wakeup"); 3556 if (irq <= 0) { 3557 bt_dev_dbg(hdev, "%s: no OOB Wakeup IRQ in DT", __func__); 3558 return 0; 3559 } 3560 3561 irq_set_status_flags(irq, IRQ_NOAUTOEN); 3562 ret = devm_request_irq(&hdev->dev, irq, btusb_oob_wake_handler, 3563 0, "OOB Wake-on-BT", data); 3564 if (ret) { 3565 bt_dev_err(hdev, "%s: IRQ request failed", __func__); 3566 return ret; 3567 } 3568 3569 ret = device_init_wakeup(dev, true); 3570 if (ret) { 3571 bt_dev_err(hdev, "%s: failed to init_wakeup", __func__); 3572 return ret; 3573 } 3574 3575 data->oob_wake_irq = irq; 3576 bt_dev_info(hdev, "OOB Wake-on-BT configured at IRQ %u", irq); 3577 return 0; 3578 } 3579 #endif 3580 3581 static void btusb_check_needs_reset_resume(struct usb_interface *intf) 3582 { 3583 if (dmi_check_system(btusb_needs_reset_resume_table)) 3584 interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME; 3585 } 3586 3587 static int btusb_probe(struct usb_interface *intf, 3588 const struct usb_device_id *id) 3589 { 3590 struct usb_endpoint_descriptor *ep_desc; 3591 struct gpio_desc *reset_gpio; 3592 struct btusb_data *data; 3593 struct hci_dev *hdev; 3594 unsigned ifnum_base; 3595 int i, err; 3596 3597 BT_DBG("intf %p id %p", intf, id); 3598 3599 /* interface numbers are hardcoded in the spec */ 3600 if (intf->cur_altsetting->desc.bInterfaceNumber != 0) { 3601 if (!(id->driver_info & BTUSB_IFNUM_2)) 3602 return -ENODEV; 3603 if (intf->cur_altsetting->desc.bInterfaceNumber != 2) 3604 return -ENODEV; 3605 } 3606 3607 ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber; 3608 3609 if (!id->driver_info) { 3610 const struct usb_device_id *match; 3611 3612 match = usb_match_id(intf, blacklist_table); 3613 if (match) 3614 id = match; 3615 } 3616 3617 if (id->driver_info == BTUSB_IGNORE) 3618 return -ENODEV; 3619 3620 if (id->driver_info & BTUSB_ATH3012) { 3621 struct usb_device *udev = interface_to_usbdev(intf); 3622 3623 /* Old firmware would otherwise let ath3k driver load 3624 * patch and sysconfig files 3625 */ 3626 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001 && 3627 !btusb_qca_need_patch(udev)) 3628 return -ENODEV; 3629 } 3630 3631 data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL); 3632 if (!data) 3633 return -ENOMEM; 3634 3635 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { 3636 ep_desc = &intf->cur_altsetting->endpoint[i].desc; 3637 3638 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) { 3639 data->intr_ep = ep_desc; 3640 continue; 3641 } 3642 3643 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) { 3644 data->bulk_tx_ep = ep_desc; 3645 continue; 3646 } 3647 3648 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) { 3649 data->bulk_rx_ep = ep_desc; 3650 continue; 3651 } 3652 } 3653 3654 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) 3655 return -ENODEV; 3656 3657 if (id->driver_info & BTUSB_AMP) { 3658 data->cmdreq_type = USB_TYPE_CLASS | 0x01; 3659 data->cmdreq = 0x2b; 3660 } else { 3661 data->cmdreq_type = USB_TYPE_CLASS; 3662 data->cmdreq = 0x00; 3663 } 3664 3665 data->udev = interface_to_usbdev(intf); 3666 data->intf = intf; 3667 3668 INIT_WORK(&data->work, btusb_work); 3669 INIT_WORK(&data->waker, btusb_waker); 3670 init_usb_anchor(&data->deferred); 3671 init_usb_anchor(&data->tx_anchor); 3672 spin_lock_init(&data->txlock); 3673 3674 init_usb_anchor(&data->intr_anchor); 3675 init_usb_anchor(&data->bulk_anchor); 3676 init_usb_anchor(&data->isoc_anchor); 3677 init_usb_anchor(&data->diag_anchor); 3678 init_usb_anchor(&data->ctrl_anchor); 3679 spin_lock_init(&data->rxlock); 3680 3681 if (id->driver_info & BTUSB_INTEL_NEW) { 3682 data->recv_event = btusb_recv_event_intel; 3683 data->recv_bulk = btusb_recv_bulk_intel; 3684 set_bit(BTUSB_BOOTLOADER, &data->flags); 3685 } else { 3686 data->recv_event = hci_recv_frame; 3687 data->recv_bulk = btusb_recv_bulk; 3688 } 3689 3690 hdev = hci_alloc_dev(); 3691 if (!hdev) 3692 return -ENOMEM; 3693 3694 hdev->bus = HCI_USB; 3695 hci_set_drvdata(hdev, data); 3696 3697 if (id->driver_info & BTUSB_AMP) 3698 hdev->dev_type = HCI_AMP; 3699 else 3700 hdev->dev_type = HCI_PRIMARY; 3701 3702 data->hdev = hdev; 3703 3704 SET_HCIDEV_DEV(hdev, &intf->dev); 3705 3706 reset_gpio = gpiod_get_optional(&data->udev->dev, "reset", 3707 GPIOD_OUT_LOW); 3708 if (IS_ERR(reset_gpio)) { 3709 err = PTR_ERR(reset_gpio); 3710 goto out_free_dev; 3711 } else if (reset_gpio) { 3712 data->reset_gpio = reset_gpio; 3713 } 3714 3715 hdev->open = btusb_open; 3716 hdev->close = btusb_close; 3717 hdev->flush = btusb_flush; 3718 hdev->send = btusb_send_frame; 3719 hdev->notify = btusb_notify; 3720 3721 #ifdef CONFIG_PM 3722 err = btusb_config_oob_wake(hdev); 3723 if (err) 3724 goto out_free_dev; 3725 3726 /* Marvell devices may need a specific chip configuration */ 3727 if (id->driver_info & BTUSB_MARVELL && data->oob_wake_irq) { 3728 err = marvell_config_oob_wake(hdev); 3729 if (err) 3730 goto out_free_dev; 3731 } 3732 #endif 3733 if (id->driver_info & BTUSB_CW6622) 3734 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks); 3735 3736 if (id->driver_info & BTUSB_BCM2045) 3737 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks); 3738 3739 if (id->driver_info & BTUSB_BCM92035) 3740 hdev->setup = btusb_setup_bcm92035; 3741 3742 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) && 3743 (id->driver_info & BTUSB_BCM_PATCHRAM)) { 3744 hdev->manufacturer = 15; 3745 hdev->setup = btbcm_setup_patchram; 3746 hdev->set_diag = btusb_bcm_set_diag; 3747 hdev->set_bdaddr = btbcm_set_bdaddr; 3748 3749 /* Broadcom LM_DIAG Interface numbers are hardcoded */ 3750 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2); 3751 } 3752 3753 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) && 3754 (id->driver_info & BTUSB_BCM_APPLE)) { 3755 hdev->manufacturer = 15; 3756 hdev->setup = btbcm_setup_apple; 3757 hdev->set_diag = btusb_bcm_set_diag; 3758 3759 /* Broadcom LM_DIAG Interface numbers are hardcoded */ 3760 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2); 3761 } 3762 3763 if (id->driver_info & BTUSB_INTEL) { 3764 hdev->manufacturer = 2; 3765 hdev->setup = btusb_setup_intel; 3766 hdev->shutdown = btusb_shutdown_intel; 3767 hdev->set_diag = btintel_set_diag_mfg; 3768 hdev->set_bdaddr = btintel_set_bdaddr; 3769 hdev->cmd_timeout = btusb_intel_cmd_timeout; 3770 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks); 3771 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); 3772 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks); 3773 } 3774 3775 if (id->driver_info & BTUSB_INTEL_NEW) { 3776 hdev->manufacturer = 2; 3777 hdev->send = btusb_send_frame_intel; 3778 hdev->setup = btusb_setup_intel_new; 3779 hdev->shutdown = btusb_shutdown_intel_new; 3780 hdev->hw_error = btintel_hw_error; 3781 hdev->set_diag = btintel_set_diag; 3782 hdev->set_bdaddr = btintel_set_bdaddr; 3783 hdev->cmd_timeout = btusb_intel_cmd_timeout; 3784 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks); 3785 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); 3786 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks); 3787 } 3788 3789 if (id->driver_info & BTUSB_MARVELL) 3790 hdev->set_bdaddr = btusb_set_bdaddr_marvell; 3791 3792 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_MTK) && 3793 (id->driver_info & BTUSB_MEDIATEK)) { 3794 hdev->setup = btusb_mtk_setup; 3795 hdev->shutdown = btusb_mtk_shutdown; 3796 hdev->manufacturer = 70; 3797 set_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks); 3798 } 3799 3800 if (id->driver_info & BTUSB_SWAVE) { 3801 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks); 3802 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks); 3803 } 3804 3805 if (id->driver_info & BTUSB_INTEL_BOOT) { 3806 hdev->manufacturer = 2; 3807 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks); 3808 } 3809 3810 if (id->driver_info & BTUSB_ATH3012) { 3811 data->setup_on_usb = btusb_setup_qca; 3812 hdev->set_bdaddr = btusb_set_bdaddr_ath3012; 3813 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); 3814 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks); 3815 } 3816 3817 if (id->driver_info & BTUSB_QCA_ROME) { 3818 data->setup_on_usb = btusb_setup_qca; 3819 hdev->set_bdaddr = btusb_set_bdaddr_ath3012; 3820 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); 3821 btusb_check_needs_reset_resume(intf); 3822 } 3823 3824 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_RTL) && 3825 (id->driver_info & BTUSB_REALTEK)) { 3826 hdev->setup = btrtl_setup_realtek; 3827 hdev->shutdown = btrtl_shutdown_realtek; 3828 hdev->cmd_timeout = btusb_rtl_cmd_timeout; 3829 3830 /* Realtek devices lose their updated firmware over global 3831 * suspend that means host doesn't send SET_FEATURE 3832 * (DEVICE_REMOTE_WAKEUP) 3833 */ 3834 set_bit(BTUSB_WAKEUP_DISABLE, &data->flags); 3835 } 3836 3837 if (id->driver_info & BTUSB_AMP) { 3838 /* AMP controllers do not support SCO packets */ 3839 data->isoc = NULL; 3840 } else { 3841 /* Interface orders are hardcoded in the specification */ 3842 data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1); 3843 data->isoc_ifnum = ifnum_base + 1; 3844 } 3845 3846 if (!reset) 3847 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); 3848 3849 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) { 3850 if (!disable_scofix) 3851 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks); 3852 } 3853 3854 if (id->driver_info & BTUSB_BROKEN_ISOC) 3855 data->isoc = NULL; 3856 3857 if (id->driver_info & BTUSB_DIGIANSWER) { 3858 data->cmdreq_type = USB_TYPE_VENDOR; 3859 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); 3860 } 3861 3862 if (id->driver_info & BTUSB_CSR) { 3863 struct usb_device *udev = data->udev; 3864 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice); 3865 3866 /* Old firmware would otherwise execute USB reset */ 3867 if (bcdDevice < 0x117) 3868 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); 3869 3870 /* Fake CSR devices with broken commands */ 3871 if (bcdDevice <= 0x100 || bcdDevice == 0x134) 3872 hdev->setup = btusb_setup_csr; 3873 3874 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); 3875 } 3876 3877 if (id->driver_info & BTUSB_SNIFFER) { 3878 struct usb_device *udev = data->udev; 3879 3880 /* New sniffer firmware has crippled HCI interface */ 3881 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997) 3882 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks); 3883 } 3884 3885 if (id->driver_info & BTUSB_INTEL_BOOT) { 3886 /* A bug in the bootloader causes that interrupt interface is 3887 * only enabled after receiving SetInterface(0, AltSetting=0). 3888 */ 3889 err = usb_set_interface(data->udev, 0, 0); 3890 if (err < 0) { 3891 BT_ERR("failed to set interface 0, alt 0 %d", err); 3892 goto out_free_dev; 3893 } 3894 } 3895 3896 if (data->isoc) { 3897 err = usb_driver_claim_interface(&btusb_driver, 3898 data->isoc, data); 3899 if (err < 0) 3900 goto out_free_dev; 3901 } 3902 3903 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) && data->diag) { 3904 if (!usb_driver_claim_interface(&btusb_driver, 3905 data->diag, data)) 3906 __set_diag_interface(hdev); 3907 else 3908 data->diag = NULL; 3909 } 3910 3911 if (enable_autosuspend) 3912 usb_enable_autosuspend(data->udev); 3913 3914 err = hci_register_dev(hdev); 3915 if (err < 0) 3916 goto out_free_dev; 3917 3918 usb_set_intfdata(intf, data); 3919 3920 return 0; 3921 3922 out_free_dev: 3923 if (data->reset_gpio) 3924 gpiod_put(data->reset_gpio); 3925 hci_free_dev(hdev); 3926 return err; 3927 } 3928 3929 static void btusb_disconnect(struct usb_interface *intf) 3930 { 3931 struct btusb_data *data = usb_get_intfdata(intf); 3932 struct hci_dev *hdev; 3933 3934 BT_DBG("intf %p", intf); 3935 3936 if (!data) 3937 return; 3938 3939 hdev = data->hdev; 3940 usb_set_intfdata(data->intf, NULL); 3941 3942 if (data->isoc) 3943 usb_set_intfdata(data->isoc, NULL); 3944 3945 if (data->diag) 3946 usb_set_intfdata(data->diag, NULL); 3947 3948 hci_unregister_dev(hdev); 3949 3950 if (intf == data->intf) { 3951 if (data->isoc) 3952 usb_driver_release_interface(&btusb_driver, data->isoc); 3953 if (data->diag) 3954 usb_driver_release_interface(&btusb_driver, data->diag); 3955 } else if (intf == data->isoc) { 3956 if (data->diag) 3957 usb_driver_release_interface(&btusb_driver, data->diag); 3958 usb_driver_release_interface(&btusb_driver, data->intf); 3959 } else if (intf == data->diag) { 3960 usb_driver_release_interface(&btusb_driver, data->intf); 3961 if (data->isoc) 3962 usb_driver_release_interface(&btusb_driver, data->isoc); 3963 } 3964 3965 if (data->oob_wake_irq) 3966 device_init_wakeup(&data->udev->dev, false); 3967 3968 if (data->reset_gpio) 3969 gpiod_put(data->reset_gpio); 3970 3971 hci_free_dev(hdev); 3972 } 3973 3974 #ifdef CONFIG_PM 3975 static int btusb_suspend(struct usb_interface *intf, pm_message_t message) 3976 { 3977 struct btusb_data *data = usb_get_intfdata(intf); 3978 3979 BT_DBG("intf %p", intf); 3980 3981 if (data->suspend_count++) 3982 return 0; 3983 3984 spin_lock_irq(&data->txlock); 3985 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) { 3986 set_bit(BTUSB_SUSPENDING, &data->flags); 3987 spin_unlock_irq(&data->txlock); 3988 } else { 3989 spin_unlock_irq(&data->txlock); 3990 data->suspend_count--; 3991 return -EBUSY; 3992 } 3993 3994 cancel_work_sync(&data->work); 3995 3996 btusb_stop_traffic(data); 3997 usb_kill_anchored_urbs(&data->tx_anchor); 3998 3999 if (data->oob_wake_irq && device_may_wakeup(&data->udev->dev)) { 4000 set_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags); 4001 enable_irq_wake(data->oob_wake_irq); 4002 enable_irq(data->oob_wake_irq); 4003 } 4004 4005 /* For global suspend, Realtek devices lose the loaded fw 4006 * in them. But for autosuspend, firmware should remain. 4007 * Actually, it depends on whether the usb host sends 4008 * set feature (enable wakeup) or not. 4009 */ 4010 if (test_bit(BTUSB_WAKEUP_DISABLE, &data->flags)) { 4011 if (PMSG_IS_AUTO(message) && 4012 device_can_wakeup(&data->udev->dev)) 4013 data->udev->do_remote_wakeup = 1; 4014 else if (!PMSG_IS_AUTO(message)) 4015 data->udev->reset_resume = 1; 4016 } 4017 4018 return 0; 4019 } 4020 4021 static void play_deferred(struct btusb_data *data) 4022 { 4023 struct urb *urb; 4024 int err; 4025 4026 while ((urb = usb_get_from_anchor(&data->deferred))) { 4027 usb_anchor_urb(urb, &data->tx_anchor); 4028 4029 err = usb_submit_urb(urb, GFP_ATOMIC); 4030 if (err < 0) { 4031 if (err != -EPERM && err != -ENODEV) 4032 BT_ERR("%s urb %p submission failed (%d)", 4033 data->hdev->name, urb, -err); 4034 kfree(urb->setup_packet); 4035 usb_unanchor_urb(urb); 4036 usb_free_urb(urb); 4037 break; 4038 } 4039 4040 data->tx_in_flight++; 4041 usb_free_urb(urb); 4042 } 4043 4044 /* Cleanup the rest deferred urbs. */ 4045 while ((urb = usb_get_from_anchor(&data->deferred))) { 4046 kfree(urb->setup_packet); 4047 usb_free_urb(urb); 4048 } 4049 } 4050 4051 static int btusb_resume(struct usb_interface *intf) 4052 { 4053 struct btusb_data *data = usb_get_intfdata(intf); 4054 struct hci_dev *hdev = data->hdev; 4055 int err = 0; 4056 4057 BT_DBG("intf %p", intf); 4058 4059 if (--data->suspend_count) 4060 return 0; 4061 4062 /* Disable only if not already disabled (keep it balanced) */ 4063 if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) { 4064 disable_irq(data->oob_wake_irq); 4065 disable_irq_wake(data->oob_wake_irq); 4066 } 4067 4068 if (!test_bit(HCI_RUNNING, &hdev->flags)) 4069 goto done; 4070 4071 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) { 4072 err = btusb_submit_intr_urb(hdev, GFP_NOIO); 4073 if (err < 0) { 4074 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 4075 goto failed; 4076 } 4077 } 4078 4079 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) { 4080 err = btusb_submit_bulk_urb(hdev, GFP_NOIO); 4081 if (err < 0) { 4082 clear_bit(BTUSB_BULK_RUNNING, &data->flags); 4083 goto failed; 4084 } 4085 4086 btusb_submit_bulk_urb(hdev, GFP_NOIO); 4087 } 4088 4089 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) { 4090 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0) 4091 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 4092 else 4093 btusb_submit_isoc_urb(hdev, GFP_NOIO); 4094 } 4095 4096 spin_lock_irq(&data->txlock); 4097 play_deferred(data); 4098 clear_bit(BTUSB_SUSPENDING, &data->flags); 4099 spin_unlock_irq(&data->txlock); 4100 schedule_work(&data->work); 4101 4102 return 0; 4103 4104 failed: 4105 usb_scuttle_anchored_urbs(&data->deferred); 4106 done: 4107 spin_lock_irq(&data->txlock); 4108 clear_bit(BTUSB_SUSPENDING, &data->flags); 4109 spin_unlock_irq(&data->txlock); 4110 4111 return err; 4112 } 4113 #endif 4114 4115 static struct usb_driver btusb_driver = { 4116 .name = "btusb", 4117 .probe = btusb_probe, 4118 .disconnect = btusb_disconnect, 4119 #ifdef CONFIG_PM 4120 .suspend = btusb_suspend, 4121 .resume = btusb_resume, 4122 #endif 4123 .id_table = btusb_table, 4124 .supports_autosuspend = 1, 4125 .disable_hub_initiated_lpm = 1, 4126 }; 4127 4128 module_usb_driver(btusb_driver); 4129 4130 module_param(disable_scofix, bool, 0644); 4131 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size"); 4132 4133 module_param(force_scofix, bool, 0644); 4134 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size"); 4135 4136 module_param(enable_autosuspend, bool, 0644); 4137 MODULE_PARM_DESC(enable_autosuspend, "Enable USB autosuspend by default"); 4138 4139 module_param(reset, bool, 0644); 4140 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization"); 4141 4142 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); 4143 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION); 4144 MODULE_VERSION(VERSION); 4145 MODULE_LICENSE("GPL"); 4146