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