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 #include "btmtk.h" 28 29 #define VERSION "0.8" 30 31 static bool disable_scofix; 32 static bool force_scofix; 33 static bool enable_autosuspend = IS_ENABLED(CONFIG_BT_HCIBTUSB_AUTOSUSPEND); 34 35 static bool reset = true; 36 37 static struct usb_driver btusb_driver; 38 39 #define BTUSB_IGNORE 0x01 40 #define BTUSB_DIGIANSWER 0x02 41 #define BTUSB_CSR 0x04 42 #define BTUSB_SNIFFER 0x08 43 #define BTUSB_BCM92035 0x10 44 #define BTUSB_BROKEN_ISOC 0x20 45 #define BTUSB_WRONG_SCO_MTU 0x40 46 #define BTUSB_ATH3012 0x80 47 #define BTUSB_INTEL_COMBINED 0x100 48 #define BTUSB_INTEL_BOOT 0x200 49 #define BTUSB_BCM_PATCHRAM 0x400 50 #define BTUSB_MARVELL 0x800 51 #define BTUSB_SWAVE 0x1000 52 #define BTUSB_AMP 0x4000 53 #define BTUSB_QCA_ROME 0x8000 54 #define BTUSB_BCM_APPLE 0x10000 55 #define BTUSB_REALTEK 0x20000 56 #define BTUSB_BCM2045 0x40000 57 #define BTUSB_IFNUM_2 0x80000 58 #define BTUSB_CW6622 0x100000 59 #define BTUSB_MEDIATEK 0x200000 60 #define BTUSB_WIDEBAND_SPEECH 0x400000 61 #define BTUSB_VALID_LE_STATES 0x800000 62 #define BTUSB_QCA_WCN6855 0x1000000 63 #define BTUSB_INTEL_BROKEN_INITIAL_NCMD 0x4000000 64 65 static const struct usb_device_id btusb_table[] = { 66 /* Generic Bluetooth USB device */ 67 { USB_DEVICE_INFO(0xe0, 0x01, 0x01) }, 68 69 /* Generic Bluetooth AMP device */ 70 { USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP }, 71 72 /* Generic Bluetooth USB interface */ 73 { USB_INTERFACE_INFO(0xe0, 0x01, 0x01) }, 74 75 /* Apple-specific (Broadcom) devices */ 76 { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01), 77 .driver_info = BTUSB_BCM_APPLE | BTUSB_IFNUM_2 }, 78 79 /* MediaTek MT76x0E */ 80 { USB_DEVICE(0x0e8d, 0x763f) }, 81 82 /* Broadcom SoftSailing reporting vendor specific */ 83 { USB_DEVICE(0x0a5c, 0x21e1) }, 84 85 /* Apple MacBookPro 7,1 */ 86 { USB_DEVICE(0x05ac, 0x8213) }, 87 88 /* Apple iMac11,1 */ 89 { USB_DEVICE(0x05ac, 0x8215) }, 90 91 /* Apple MacBookPro6,2 */ 92 { USB_DEVICE(0x05ac, 0x8218) }, 93 94 /* Apple MacBookAir3,1, MacBookAir3,2 */ 95 { USB_DEVICE(0x05ac, 0x821b) }, 96 97 /* Apple MacBookAir4,1 */ 98 { USB_DEVICE(0x05ac, 0x821f) }, 99 100 /* Apple MacBookPro8,2 */ 101 { USB_DEVICE(0x05ac, 0x821a) }, 102 103 /* Apple MacMini5,1 */ 104 { USB_DEVICE(0x05ac, 0x8281) }, 105 106 /* AVM BlueFRITZ! USB v2.0 */ 107 { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE }, 108 109 /* Bluetooth Ultraport Module from IBM */ 110 { USB_DEVICE(0x04bf, 0x030a) }, 111 112 /* ALPS Modules with non-standard id */ 113 { USB_DEVICE(0x044e, 0x3001) }, 114 { USB_DEVICE(0x044e, 0x3002) }, 115 116 /* Ericsson with non-standard id */ 117 { USB_DEVICE(0x0bdb, 0x1002) }, 118 119 /* Canyon CN-BTU1 with HID interfaces */ 120 { USB_DEVICE(0x0c10, 0x0000) }, 121 122 /* Broadcom BCM20702B0 (Dynex/Insignia) */ 123 { USB_DEVICE(0x19ff, 0x0239), .driver_info = BTUSB_BCM_PATCHRAM }, 124 125 /* Broadcom BCM43142A0 (Foxconn/Lenovo) */ 126 { USB_VENDOR_AND_INTERFACE_INFO(0x105b, 0xff, 0x01, 0x01), 127 .driver_info = BTUSB_BCM_PATCHRAM }, 128 129 /* Broadcom BCM920703 (HTC Vive) */ 130 { USB_VENDOR_AND_INTERFACE_INFO(0x0bb4, 0xff, 0x01, 0x01), 131 .driver_info = BTUSB_BCM_PATCHRAM }, 132 133 /* Foxconn - Hon Hai */ 134 { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01), 135 .driver_info = BTUSB_BCM_PATCHRAM }, 136 137 /* Lite-On Technology - Broadcom based */ 138 { USB_VENDOR_AND_INTERFACE_INFO(0x04ca, 0xff, 0x01, 0x01), 139 .driver_info = BTUSB_BCM_PATCHRAM }, 140 141 /* Broadcom devices with vendor specific id */ 142 { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01), 143 .driver_info = BTUSB_BCM_PATCHRAM }, 144 145 /* ASUSTek Computer - Broadcom based */ 146 { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01), 147 .driver_info = BTUSB_BCM_PATCHRAM }, 148 149 /* Belkin F8065bf - Broadcom based */ 150 { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01), 151 .driver_info = BTUSB_BCM_PATCHRAM }, 152 153 /* IMC Networks - Broadcom based */ 154 { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01), 155 .driver_info = BTUSB_BCM_PATCHRAM }, 156 157 /* Dell Computer - Broadcom based */ 158 { USB_VENDOR_AND_INTERFACE_INFO(0x413c, 0xff, 0x01, 0x01), 159 .driver_info = BTUSB_BCM_PATCHRAM }, 160 161 /* Toshiba Corp - Broadcom based */ 162 { USB_VENDOR_AND_INTERFACE_INFO(0x0930, 0xff, 0x01, 0x01), 163 .driver_info = BTUSB_BCM_PATCHRAM }, 164 165 /* Intel Bluetooth USB Bootloader (RAM module) */ 166 { USB_DEVICE(0x8087, 0x0a5a), 167 .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC }, 168 169 { } /* Terminating entry */ 170 }; 171 172 MODULE_DEVICE_TABLE(usb, btusb_table); 173 174 static const struct usb_device_id blacklist_table[] = { 175 /* CSR BlueCore devices */ 176 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR }, 177 178 /* Broadcom BCM2033 without firmware */ 179 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE }, 180 181 /* Broadcom BCM2045 devices */ 182 { USB_DEVICE(0x0a5c, 0x2045), .driver_info = BTUSB_BCM2045 }, 183 184 /* Atheros 3011 with sflash firmware */ 185 { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE }, 186 { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE }, 187 { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE }, 188 { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE }, 189 { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE }, 190 { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE }, 191 { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE }, 192 193 /* Atheros AR9285 Malbec with sflash firmware */ 194 { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE }, 195 196 /* Atheros 3012 with sflash firmware */ 197 { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 }, 198 { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 }, 199 { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 }, 200 { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 }, 201 { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 }, 202 { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 }, 203 { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 }, 204 { USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 }, 205 { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 }, 206 { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 }, 207 { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 }, 208 { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 }, 209 { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 }, 210 { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 }, 211 { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 }, 212 { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 }, 213 { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 }, 214 { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 }, 215 { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 }, 216 { USB_DEVICE(0x04ca, 0x3018), .driver_info = BTUSB_ATH3012 }, 217 { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 }, 218 { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 }, 219 { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 }, 220 { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 }, 221 { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 }, 222 { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 }, 223 { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 }, 224 { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 }, 225 { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 }, 226 { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 }, 227 { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 }, 228 { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 }, 229 { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 }, 230 { USB_DEVICE(0x0cf3, 0x817b), .driver_info = BTUSB_ATH3012 }, 231 { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 }, 232 { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 }, 233 { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 }, 234 { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 }, 235 { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 }, 236 { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 }, 237 { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 }, 238 { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 }, 239 { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 }, 240 { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 }, 241 { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 }, 242 { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 }, 243 { USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 }, 244 { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 }, 245 { USB_DEVICE(0x13d3, 0x3487), .driver_info = BTUSB_ATH3012 }, 246 { USB_DEVICE(0x13d3, 0x3490), .driver_info = BTUSB_ATH3012 }, 247 248 /* Atheros AR5BBU12 with sflash firmware */ 249 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE }, 250 251 /* Atheros AR5BBU12 with sflash firmware */ 252 { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 }, 253 { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 }, 254 255 /* QCA ROME chipset */ 256 { USB_DEVICE(0x0cf3, 0x535b), .driver_info = BTUSB_QCA_ROME | 257 BTUSB_WIDEBAND_SPEECH }, 258 { USB_DEVICE(0x0cf3, 0xe007), .driver_info = BTUSB_QCA_ROME | 259 BTUSB_WIDEBAND_SPEECH }, 260 { USB_DEVICE(0x0cf3, 0xe009), .driver_info = BTUSB_QCA_ROME | 261 BTUSB_WIDEBAND_SPEECH }, 262 { USB_DEVICE(0x0cf3, 0xe010), .driver_info = BTUSB_QCA_ROME | 263 BTUSB_WIDEBAND_SPEECH }, 264 { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME | 265 BTUSB_WIDEBAND_SPEECH }, 266 { USB_DEVICE(0x0cf3, 0xe301), .driver_info = BTUSB_QCA_ROME | 267 BTUSB_WIDEBAND_SPEECH }, 268 { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME | 269 BTUSB_WIDEBAND_SPEECH }, 270 { USB_DEVICE(0x0cf3, 0xe500), .driver_info = BTUSB_QCA_ROME | 271 BTUSB_WIDEBAND_SPEECH }, 272 { USB_DEVICE(0x0489, 0xe092), .driver_info = BTUSB_QCA_ROME | 273 BTUSB_WIDEBAND_SPEECH }, 274 { USB_DEVICE(0x0489, 0xe09f), .driver_info = BTUSB_QCA_ROME | 275 BTUSB_WIDEBAND_SPEECH }, 276 { USB_DEVICE(0x0489, 0xe0a2), .driver_info = BTUSB_QCA_ROME | 277 BTUSB_WIDEBAND_SPEECH }, 278 { USB_DEVICE(0x04ca, 0x3011), .driver_info = BTUSB_QCA_ROME | 279 BTUSB_WIDEBAND_SPEECH }, 280 { USB_DEVICE(0x04ca, 0x3015), .driver_info = BTUSB_QCA_ROME | 281 BTUSB_WIDEBAND_SPEECH }, 282 { USB_DEVICE(0x04ca, 0x3016), .driver_info = BTUSB_QCA_ROME | 283 BTUSB_WIDEBAND_SPEECH }, 284 { USB_DEVICE(0x04ca, 0x301a), .driver_info = BTUSB_QCA_ROME | 285 BTUSB_WIDEBAND_SPEECH }, 286 { USB_DEVICE(0x04ca, 0x3021), .driver_info = BTUSB_QCA_ROME | 287 BTUSB_WIDEBAND_SPEECH }, 288 { USB_DEVICE(0x13d3, 0x3491), .driver_info = BTUSB_QCA_ROME | 289 BTUSB_WIDEBAND_SPEECH }, 290 { USB_DEVICE(0x13d3, 0x3496), .driver_info = BTUSB_QCA_ROME | 291 BTUSB_WIDEBAND_SPEECH }, 292 { USB_DEVICE(0x13d3, 0x3501), .driver_info = BTUSB_QCA_ROME | 293 BTUSB_WIDEBAND_SPEECH }, 294 295 /* QCA WCN6855 chipset */ 296 { USB_DEVICE(0x0cf3, 0xe600), .driver_info = BTUSB_QCA_WCN6855 | 297 BTUSB_WIDEBAND_SPEECH | 298 BTUSB_VALID_LE_STATES }, 299 300 /* Broadcom BCM2035 */ 301 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 }, 302 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU }, 303 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU }, 304 305 /* Broadcom BCM2045 */ 306 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU }, 307 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU }, 308 309 /* IBM/Lenovo ThinkPad with Broadcom chip */ 310 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU }, 311 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU }, 312 313 /* HP laptop with Broadcom chip */ 314 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU }, 315 316 /* Dell laptop with Broadcom chip */ 317 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU }, 318 319 /* Dell Wireless 370 and 410 devices */ 320 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU }, 321 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU }, 322 323 /* Belkin F8T012 and F8T013 devices */ 324 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU }, 325 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU }, 326 327 /* Asus WL-BTD202 device */ 328 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU }, 329 330 /* Kensington Bluetooth USB adapter */ 331 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU }, 332 333 /* RTX Telecom based adapters with buggy SCO support */ 334 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC }, 335 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC }, 336 337 /* CONWISE Technology based adapters with buggy SCO support */ 338 { USB_DEVICE(0x0e5e, 0x6622), 339 .driver_info = BTUSB_BROKEN_ISOC | BTUSB_CW6622}, 340 341 /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */ 342 { USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE }, 343 344 /* Digianswer devices */ 345 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER }, 346 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE }, 347 348 /* CSR BlueCore Bluetooth Sniffer */ 349 { USB_DEVICE(0x0a12, 0x0002), 350 .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC }, 351 352 /* Frontline ComProbe Bluetooth Sniffer */ 353 { USB_DEVICE(0x16d3, 0x0002), 354 .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC }, 355 356 /* Marvell Bluetooth devices */ 357 { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL }, 358 { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL }, 359 { USB_DEVICE(0x1286, 0x204e), .driver_info = BTUSB_MARVELL }, 360 361 /* Intel Bluetooth devices */ 362 { USB_DEVICE(0x8087, 0x0025), .driver_info = BTUSB_INTEL_COMBINED }, 363 { USB_DEVICE(0x8087, 0x0026), .driver_info = BTUSB_INTEL_COMBINED }, 364 { USB_DEVICE(0x8087, 0x0029), .driver_info = BTUSB_INTEL_COMBINED }, 365 { USB_DEVICE(0x8087, 0x0032), .driver_info = BTUSB_INTEL_COMBINED }, 366 { USB_DEVICE(0x8087, 0x0033), .driver_info = BTUSB_INTEL_COMBINED }, 367 { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR }, 368 { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL_COMBINED | 369 BTUSB_INTEL_BROKEN_INITIAL_NCMD }, 370 { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL_COMBINED }, 371 { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_COMBINED }, 372 { USB_DEVICE(0x8087, 0x0aa7), .driver_info = BTUSB_INTEL_COMBINED }, 373 { USB_DEVICE(0x8087, 0x0aaa), .driver_info = BTUSB_INTEL_COMBINED }, 374 375 /* Other Intel Bluetooth devices */ 376 { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01), 377 .driver_info = BTUSB_IGNORE }, 378 379 /* Realtek 8822CE Bluetooth devices */ 380 { USB_DEVICE(0x0bda, 0xb00c), .driver_info = BTUSB_REALTEK | 381 BTUSB_WIDEBAND_SPEECH }, 382 { USB_DEVICE(0x0bda, 0xc822), .driver_info = BTUSB_REALTEK | 383 BTUSB_WIDEBAND_SPEECH }, 384 385 /* Realtek 8852AE Bluetooth devices */ 386 { USB_DEVICE(0x0bda, 0xc852), .driver_info = BTUSB_REALTEK | 387 BTUSB_WIDEBAND_SPEECH }, 388 { USB_DEVICE(0x0bda, 0x4852), .driver_info = BTUSB_REALTEK | 389 BTUSB_WIDEBAND_SPEECH }, 390 { USB_DEVICE(0x04c5, 0x165c), .driver_info = BTUSB_REALTEK | 391 BTUSB_WIDEBAND_SPEECH }, 392 { USB_DEVICE(0x04ca, 0x4006), .driver_info = BTUSB_REALTEK | 393 BTUSB_WIDEBAND_SPEECH }, 394 395 /* Realtek Bluetooth devices */ 396 { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01), 397 .driver_info = BTUSB_REALTEK }, 398 399 /* MediaTek Bluetooth devices */ 400 { USB_VENDOR_AND_INTERFACE_INFO(0x0e8d, 0xe0, 0x01, 0x01), 401 .driver_info = BTUSB_MEDIATEK | 402 BTUSB_WIDEBAND_SPEECH | 403 BTUSB_VALID_LE_STATES }, 404 405 /* Additional MediaTek MT7615E Bluetooth devices */ 406 { USB_DEVICE(0x13d3, 0x3560), .driver_info = BTUSB_MEDIATEK}, 407 408 /* Additional MediaTek MT7668 Bluetooth devices */ 409 { USB_DEVICE(0x043e, 0x3109), .driver_info = BTUSB_MEDIATEK | 410 BTUSB_WIDEBAND_SPEECH | 411 BTUSB_VALID_LE_STATES }, 412 413 /* Additional MediaTek MT7921 Bluetooth devices */ 414 { USB_DEVICE(0x04ca, 0x3802), .driver_info = BTUSB_MEDIATEK | 415 BTUSB_WIDEBAND_SPEECH | 416 BTUSB_VALID_LE_STATES }, 417 { USB_DEVICE(0x13d3, 0x3563), .driver_info = BTUSB_MEDIATEK | 418 BTUSB_WIDEBAND_SPEECH | 419 BTUSB_VALID_LE_STATES }, 420 { USB_DEVICE(0x13d3, 0x3564), .driver_info = BTUSB_MEDIATEK | 421 BTUSB_WIDEBAND_SPEECH | 422 BTUSB_VALID_LE_STATES }, 423 { USB_DEVICE(0x0489, 0xe0cd), .driver_info = BTUSB_MEDIATEK | 424 BTUSB_WIDEBAND_SPEECH | 425 BTUSB_VALID_LE_STATES }, 426 427 /* Additional Realtek 8723AE Bluetooth devices */ 428 { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK }, 429 { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK }, 430 431 /* Additional Realtek 8723BE Bluetooth devices */ 432 { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK }, 433 { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK }, 434 { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK }, 435 { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK }, 436 { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK }, 437 { USB_DEVICE(0x13d3, 0x3494), .driver_info = BTUSB_REALTEK }, 438 439 /* Additional Realtek 8723BU Bluetooth devices */ 440 { USB_DEVICE(0x7392, 0xa611), .driver_info = BTUSB_REALTEK }, 441 442 /* Additional Realtek 8723DE Bluetooth devices */ 443 { USB_DEVICE(0x0bda, 0xb009), .driver_info = BTUSB_REALTEK }, 444 { USB_DEVICE(0x2ff8, 0xb011), .driver_info = BTUSB_REALTEK }, 445 446 /* Additional Realtek 8761B Bluetooth devices */ 447 { USB_DEVICE(0x2357, 0x0604), .driver_info = BTUSB_REALTEK | 448 BTUSB_WIDEBAND_SPEECH }, 449 450 /* Additional Realtek 8761BU Bluetooth devices */ 451 { USB_DEVICE(0x0b05, 0x190e), .driver_info = BTUSB_REALTEK | 452 BTUSB_WIDEBAND_SPEECH }, 453 454 /* Additional Realtek 8821AE Bluetooth devices */ 455 { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK }, 456 { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK }, 457 { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK }, 458 { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK }, 459 { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK }, 460 461 /* Additional Realtek 8822BE Bluetooth devices */ 462 { USB_DEVICE(0x13d3, 0x3526), .driver_info = BTUSB_REALTEK }, 463 { USB_DEVICE(0x0b05, 0x185c), .driver_info = BTUSB_REALTEK }, 464 465 /* Additional Realtek 8822CE Bluetooth devices */ 466 { USB_DEVICE(0x04ca, 0x4005), .driver_info = BTUSB_REALTEK | 467 BTUSB_WIDEBAND_SPEECH }, 468 { USB_DEVICE(0x04c5, 0x161f), .driver_info = BTUSB_REALTEK | 469 BTUSB_WIDEBAND_SPEECH }, 470 { USB_DEVICE(0x0b05, 0x18ef), .driver_info = BTUSB_REALTEK | 471 BTUSB_WIDEBAND_SPEECH }, 472 { USB_DEVICE(0x13d3, 0x3548), .driver_info = BTUSB_REALTEK | 473 BTUSB_WIDEBAND_SPEECH }, 474 { USB_DEVICE(0x13d3, 0x3549), .driver_info = BTUSB_REALTEK | 475 BTUSB_WIDEBAND_SPEECH }, 476 { USB_DEVICE(0x13d3, 0x3553), .driver_info = BTUSB_REALTEK | 477 BTUSB_WIDEBAND_SPEECH }, 478 { USB_DEVICE(0x13d3, 0x3555), .driver_info = BTUSB_REALTEK | 479 BTUSB_WIDEBAND_SPEECH }, 480 { USB_DEVICE(0x2ff8, 0x3051), .driver_info = BTUSB_REALTEK | 481 BTUSB_WIDEBAND_SPEECH }, 482 { USB_DEVICE(0x1358, 0xc123), .driver_info = BTUSB_REALTEK | 483 BTUSB_WIDEBAND_SPEECH }, 484 { USB_DEVICE(0x0bda, 0xc123), .driver_info = BTUSB_REALTEK | 485 BTUSB_WIDEBAND_SPEECH }, 486 { USB_DEVICE(0x0cb5, 0xc547), .driver_info = BTUSB_REALTEK | 487 BTUSB_WIDEBAND_SPEECH }, 488 489 /* Silicon Wave based devices */ 490 { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE }, 491 492 { } /* Terminating entry */ 493 }; 494 495 /* The Bluetooth USB module build into some devices needs to be reset on resume, 496 * this is a problem with the platform (likely shutting off all power) not with 497 * the module itself. So we use a DMI list to match known broken platforms. 498 */ 499 static const struct dmi_system_id btusb_needs_reset_resume_table[] = { 500 { 501 /* Dell OptiPlex 3060 (QCA ROME device 0cf3:e007) */ 502 .matches = { 503 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 504 DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 3060"), 505 }, 506 }, 507 { 508 /* Dell XPS 9360 (QCA ROME device 0cf3:e300) */ 509 .matches = { 510 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 511 DMI_MATCH(DMI_PRODUCT_NAME, "XPS 13 9360"), 512 }, 513 }, 514 { 515 /* Dell Inspiron 5565 (QCA ROME device 0cf3:e009) */ 516 .matches = { 517 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 518 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5565"), 519 }, 520 }, 521 {} 522 }; 523 524 #define BTUSB_MAX_ISOC_FRAMES 10 525 526 #define BTUSB_INTR_RUNNING 0 527 #define BTUSB_BULK_RUNNING 1 528 #define BTUSB_ISOC_RUNNING 2 529 #define BTUSB_SUSPENDING 3 530 #define BTUSB_DID_ISO_RESUME 4 531 #define BTUSB_BOOTLOADER 5 532 #define BTUSB_DOWNLOADING 6 533 #define BTUSB_FIRMWARE_LOADED 7 534 #define BTUSB_FIRMWARE_FAILED 8 535 #define BTUSB_BOOTING 9 536 #define BTUSB_DIAG_RUNNING 10 537 #define BTUSB_OOB_WAKE_ENABLED 11 538 #define BTUSB_HW_RESET_ACTIVE 12 539 #define BTUSB_TX_WAIT_VND_EVT 13 540 #define BTUSB_WAKEUP_AUTOSUSPEND 14 541 #define BTUSB_USE_ALT3_FOR_WBS 15 542 543 struct btusb_data { 544 struct hci_dev *hdev; 545 struct usb_device *udev; 546 struct usb_interface *intf; 547 struct usb_interface *isoc; 548 struct usb_interface *diag; 549 unsigned isoc_ifnum; 550 551 unsigned long flags; 552 553 struct work_struct work; 554 struct work_struct waker; 555 556 struct usb_anchor deferred; 557 struct usb_anchor tx_anchor; 558 int tx_in_flight; 559 spinlock_t txlock; 560 561 struct usb_anchor intr_anchor; 562 struct usb_anchor bulk_anchor; 563 struct usb_anchor isoc_anchor; 564 struct usb_anchor diag_anchor; 565 struct usb_anchor ctrl_anchor; 566 spinlock_t rxlock; 567 568 struct sk_buff *evt_skb; 569 struct sk_buff *acl_skb; 570 struct sk_buff *sco_skb; 571 572 struct usb_endpoint_descriptor *intr_ep; 573 struct usb_endpoint_descriptor *bulk_tx_ep; 574 struct usb_endpoint_descriptor *bulk_rx_ep; 575 struct usb_endpoint_descriptor *isoc_tx_ep; 576 struct usb_endpoint_descriptor *isoc_rx_ep; 577 struct usb_endpoint_descriptor *diag_tx_ep; 578 struct usb_endpoint_descriptor *diag_rx_ep; 579 580 struct gpio_desc *reset_gpio; 581 582 __u8 cmdreq_type; 583 __u8 cmdreq; 584 585 unsigned int sco_num; 586 unsigned int air_mode; 587 bool usb_alt6_packet_flow; 588 int isoc_altsetting; 589 int suspend_count; 590 591 int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb); 592 int (*recv_acl)(struct hci_dev *hdev, struct sk_buff *skb); 593 int (*recv_bulk)(struct btusb_data *data, void *buffer, int count); 594 595 int (*setup_on_usb)(struct hci_dev *hdev); 596 597 int oob_wake_irq; /* irq for out-of-band wake-on-bt */ 598 unsigned cmd_timeout_cnt; 599 }; 600 601 static void btusb_intel_cmd_timeout(struct hci_dev *hdev) 602 { 603 struct btusb_data *data = hci_get_drvdata(hdev); 604 struct gpio_desc *reset_gpio = data->reset_gpio; 605 606 if (++data->cmd_timeout_cnt < 5) 607 return; 608 609 if (!reset_gpio) { 610 bt_dev_err(hdev, "No way to reset. Ignoring and continuing"); 611 return; 612 } 613 614 /* 615 * Toggle the hard reset line if the platform provides one. The reset 616 * is going to yank the device off the USB and then replug. So doing 617 * once is enough. The cleanup is handled correctly on the way out 618 * (standard USB disconnect), and the new device is detected cleanly 619 * and bound to the driver again like it should be. 620 */ 621 if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) { 622 bt_dev_err(hdev, "last reset failed? Not resetting again"); 623 return; 624 } 625 626 bt_dev_err(hdev, "Initiating HW reset via gpio"); 627 gpiod_set_value_cansleep(reset_gpio, 1); 628 msleep(100); 629 gpiod_set_value_cansleep(reset_gpio, 0); 630 } 631 632 static void btusb_rtl_cmd_timeout(struct hci_dev *hdev) 633 { 634 struct btusb_data *data = hci_get_drvdata(hdev); 635 struct gpio_desc *reset_gpio = data->reset_gpio; 636 637 if (++data->cmd_timeout_cnt < 5) 638 return; 639 640 if (!reset_gpio) { 641 bt_dev_err(hdev, "No gpio to reset Realtek device, ignoring"); 642 return; 643 } 644 645 /* Toggle the hard reset line. The Realtek device is going to 646 * yank itself off the USB and then replug. The cleanup is handled 647 * correctly on the way out (standard USB disconnect), and the new 648 * device is detected cleanly and bound to the driver again like 649 * it should be. 650 */ 651 if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) { 652 bt_dev_err(hdev, "last reset failed? Not resetting again"); 653 return; 654 } 655 656 bt_dev_err(hdev, "Reset Realtek device via gpio"); 657 gpiod_set_value_cansleep(reset_gpio, 1); 658 msleep(200); 659 gpiod_set_value_cansleep(reset_gpio, 0); 660 } 661 662 static void btusb_qca_cmd_timeout(struct hci_dev *hdev) 663 { 664 struct btusb_data *data = hci_get_drvdata(hdev); 665 struct gpio_desc *reset_gpio = data->reset_gpio; 666 int err; 667 668 if (++data->cmd_timeout_cnt < 5) 669 return; 670 671 if (reset_gpio) { 672 bt_dev_err(hdev, "Reset qca device via bt_en gpio"); 673 674 /* Toggle the hard reset line. The qca bt device is going to 675 * yank itself off the USB and then replug. The cleanup is handled 676 * correctly on the way out (standard USB disconnect), and the new 677 * device is detected cleanly and bound to the driver again like 678 * it should be. 679 */ 680 if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) { 681 bt_dev_err(hdev, "last reset failed? Not resetting again"); 682 return; 683 } 684 685 gpiod_set_value_cansleep(reset_gpio, 0); 686 msleep(200); 687 gpiod_set_value_cansleep(reset_gpio, 1); 688 689 return; 690 } 691 692 bt_dev_err(hdev, "Multiple cmd timeouts seen. Resetting usb device."); 693 /* This is not an unbalanced PM reference since the device will reset */ 694 err = usb_autopm_get_interface(data->intf); 695 if (!err) 696 usb_queue_reset_device(data->intf); 697 else 698 bt_dev_err(hdev, "Failed usb_autopm_get_interface with %d", err); 699 } 700 701 static inline void btusb_free_frags(struct btusb_data *data) 702 { 703 unsigned long flags; 704 705 spin_lock_irqsave(&data->rxlock, flags); 706 707 kfree_skb(data->evt_skb); 708 data->evt_skb = NULL; 709 710 kfree_skb(data->acl_skb); 711 data->acl_skb = NULL; 712 713 kfree_skb(data->sco_skb); 714 data->sco_skb = NULL; 715 716 spin_unlock_irqrestore(&data->rxlock, flags); 717 } 718 719 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count) 720 { 721 struct sk_buff *skb; 722 unsigned long flags; 723 int err = 0; 724 725 spin_lock_irqsave(&data->rxlock, flags); 726 skb = data->evt_skb; 727 728 while (count) { 729 int len; 730 731 if (!skb) { 732 skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC); 733 if (!skb) { 734 err = -ENOMEM; 735 break; 736 } 737 738 hci_skb_pkt_type(skb) = HCI_EVENT_PKT; 739 hci_skb_expect(skb) = HCI_EVENT_HDR_SIZE; 740 } 741 742 len = min_t(uint, hci_skb_expect(skb), count); 743 skb_put_data(skb, buffer, len); 744 745 count -= len; 746 buffer += len; 747 hci_skb_expect(skb) -= len; 748 749 if (skb->len == HCI_EVENT_HDR_SIZE) { 750 /* Complete event header */ 751 hci_skb_expect(skb) = hci_event_hdr(skb)->plen; 752 753 if (skb_tailroom(skb) < hci_skb_expect(skb)) { 754 kfree_skb(skb); 755 skb = NULL; 756 757 err = -EILSEQ; 758 break; 759 } 760 } 761 762 if (!hci_skb_expect(skb)) { 763 /* Complete frame */ 764 data->recv_event(data->hdev, skb); 765 skb = NULL; 766 } 767 } 768 769 data->evt_skb = skb; 770 spin_unlock_irqrestore(&data->rxlock, flags); 771 772 return err; 773 } 774 775 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count) 776 { 777 struct sk_buff *skb; 778 unsigned long flags; 779 int err = 0; 780 781 spin_lock_irqsave(&data->rxlock, flags); 782 skb = data->acl_skb; 783 784 while (count) { 785 int len; 786 787 if (!skb) { 788 skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC); 789 if (!skb) { 790 err = -ENOMEM; 791 break; 792 } 793 794 hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT; 795 hci_skb_expect(skb) = HCI_ACL_HDR_SIZE; 796 } 797 798 len = min_t(uint, hci_skb_expect(skb), count); 799 skb_put_data(skb, buffer, len); 800 801 count -= len; 802 buffer += len; 803 hci_skb_expect(skb) -= len; 804 805 if (skb->len == HCI_ACL_HDR_SIZE) { 806 __le16 dlen = hci_acl_hdr(skb)->dlen; 807 808 /* Complete ACL header */ 809 hci_skb_expect(skb) = __le16_to_cpu(dlen); 810 811 if (skb_tailroom(skb) < hci_skb_expect(skb)) { 812 kfree_skb(skb); 813 skb = NULL; 814 815 err = -EILSEQ; 816 break; 817 } 818 } 819 820 if (!hci_skb_expect(skb)) { 821 /* Complete frame */ 822 data->recv_acl(data->hdev, skb); 823 skb = NULL; 824 } 825 } 826 827 data->acl_skb = skb; 828 spin_unlock_irqrestore(&data->rxlock, flags); 829 830 return err; 831 } 832 833 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count) 834 { 835 struct sk_buff *skb; 836 unsigned long flags; 837 int err = 0; 838 839 spin_lock_irqsave(&data->rxlock, flags); 840 skb = data->sco_skb; 841 842 while (count) { 843 int len; 844 845 if (!skb) { 846 skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC); 847 if (!skb) { 848 err = -ENOMEM; 849 break; 850 } 851 852 hci_skb_pkt_type(skb) = HCI_SCODATA_PKT; 853 hci_skb_expect(skb) = HCI_SCO_HDR_SIZE; 854 } 855 856 len = min_t(uint, hci_skb_expect(skb), count); 857 skb_put_data(skb, buffer, len); 858 859 count -= len; 860 buffer += len; 861 hci_skb_expect(skb) -= len; 862 863 if (skb->len == HCI_SCO_HDR_SIZE) { 864 /* Complete SCO header */ 865 hci_skb_expect(skb) = hci_sco_hdr(skb)->dlen; 866 867 if (skb_tailroom(skb) < hci_skb_expect(skb)) { 868 kfree_skb(skb); 869 skb = NULL; 870 871 err = -EILSEQ; 872 break; 873 } 874 } 875 876 if (!hci_skb_expect(skb)) { 877 /* Complete frame */ 878 hci_recv_frame(data->hdev, skb); 879 skb = NULL; 880 } 881 } 882 883 data->sco_skb = skb; 884 spin_unlock_irqrestore(&data->rxlock, flags); 885 886 return err; 887 } 888 889 static void btusb_intr_complete(struct urb *urb) 890 { 891 struct hci_dev *hdev = urb->context; 892 struct btusb_data *data = hci_get_drvdata(hdev); 893 int err; 894 895 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, 896 urb->actual_length); 897 898 if (!test_bit(HCI_RUNNING, &hdev->flags)) 899 return; 900 901 if (urb->status == 0) { 902 hdev->stat.byte_rx += urb->actual_length; 903 904 if (btusb_recv_intr(data, urb->transfer_buffer, 905 urb->actual_length) < 0) { 906 bt_dev_err(hdev, "corrupted event packet"); 907 hdev->stat.err_rx++; 908 } 909 } else if (urb->status == -ENOENT) { 910 /* Avoid suspend failed when usb_kill_urb */ 911 return; 912 } 913 914 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags)) 915 return; 916 917 usb_mark_last_busy(data->udev); 918 usb_anchor_urb(urb, &data->intr_anchor); 919 920 err = usb_submit_urb(urb, GFP_ATOMIC); 921 if (err < 0) { 922 /* -EPERM: urb is being killed; 923 * -ENODEV: device got disconnected 924 */ 925 if (err != -EPERM && err != -ENODEV) 926 bt_dev_err(hdev, "urb %p failed to resubmit (%d)", 927 urb, -err); 928 usb_unanchor_urb(urb); 929 } 930 } 931 932 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags) 933 { 934 struct btusb_data *data = hci_get_drvdata(hdev); 935 struct urb *urb; 936 unsigned char *buf; 937 unsigned int pipe; 938 int err, size; 939 940 BT_DBG("%s", hdev->name); 941 942 if (!data->intr_ep) 943 return -ENODEV; 944 945 urb = usb_alloc_urb(0, mem_flags); 946 if (!urb) 947 return -ENOMEM; 948 949 size = le16_to_cpu(data->intr_ep->wMaxPacketSize); 950 951 buf = kmalloc(size, mem_flags); 952 if (!buf) { 953 usb_free_urb(urb); 954 return -ENOMEM; 955 } 956 957 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress); 958 959 usb_fill_int_urb(urb, data->udev, pipe, buf, size, 960 btusb_intr_complete, hdev, data->intr_ep->bInterval); 961 962 urb->transfer_flags |= URB_FREE_BUFFER; 963 964 usb_anchor_urb(urb, &data->intr_anchor); 965 966 err = usb_submit_urb(urb, mem_flags); 967 if (err < 0) { 968 if (err != -EPERM && err != -ENODEV) 969 bt_dev_err(hdev, "urb %p submission failed (%d)", 970 urb, -err); 971 usb_unanchor_urb(urb); 972 } 973 974 usb_free_urb(urb); 975 976 return err; 977 } 978 979 static void btusb_bulk_complete(struct urb *urb) 980 { 981 struct hci_dev *hdev = urb->context; 982 struct btusb_data *data = hci_get_drvdata(hdev); 983 int err; 984 985 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, 986 urb->actual_length); 987 988 if (!test_bit(HCI_RUNNING, &hdev->flags)) 989 return; 990 991 if (urb->status == 0) { 992 hdev->stat.byte_rx += urb->actual_length; 993 994 if (data->recv_bulk(data, urb->transfer_buffer, 995 urb->actual_length) < 0) { 996 bt_dev_err(hdev, "corrupted ACL packet"); 997 hdev->stat.err_rx++; 998 } 999 } else if (urb->status == -ENOENT) { 1000 /* Avoid suspend failed when usb_kill_urb */ 1001 return; 1002 } 1003 1004 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags)) 1005 return; 1006 1007 usb_anchor_urb(urb, &data->bulk_anchor); 1008 usb_mark_last_busy(data->udev); 1009 1010 err = usb_submit_urb(urb, GFP_ATOMIC); 1011 if (err < 0) { 1012 /* -EPERM: urb is being killed; 1013 * -ENODEV: device got disconnected 1014 */ 1015 if (err != -EPERM && err != -ENODEV) 1016 bt_dev_err(hdev, "urb %p failed to resubmit (%d)", 1017 urb, -err); 1018 usb_unanchor_urb(urb); 1019 } 1020 } 1021 1022 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags) 1023 { 1024 struct btusb_data *data = hci_get_drvdata(hdev); 1025 struct urb *urb; 1026 unsigned char *buf; 1027 unsigned int pipe; 1028 int err, size = HCI_MAX_FRAME_SIZE; 1029 1030 BT_DBG("%s", hdev->name); 1031 1032 if (!data->bulk_rx_ep) 1033 return -ENODEV; 1034 1035 urb = usb_alloc_urb(0, mem_flags); 1036 if (!urb) 1037 return -ENOMEM; 1038 1039 buf = kmalloc(size, mem_flags); 1040 if (!buf) { 1041 usb_free_urb(urb); 1042 return -ENOMEM; 1043 } 1044 1045 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress); 1046 1047 usb_fill_bulk_urb(urb, data->udev, pipe, buf, size, 1048 btusb_bulk_complete, hdev); 1049 1050 urb->transfer_flags |= URB_FREE_BUFFER; 1051 1052 usb_mark_last_busy(data->udev); 1053 usb_anchor_urb(urb, &data->bulk_anchor); 1054 1055 err = usb_submit_urb(urb, mem_flags); 1056 if (err < 0) { 1057 if (err != -EPERM && err != -ENODEV) 1058 bt_dev_err(hdev, "urb %p submission failed (%d)", 1059 urb, -err); 1060 usb_unanchor_urb(urb); 1061 } 1062 1063 usb_free_urb(urb); 1064 1065 return err; 1066 } 1067 1068 static void btusb_isoc_complete(struct urb *urb) 1069 { 1070 struct hci_dev *hdev = urb->context; 1071 struct btusb_data *data = hci_get_drvdata(hdev); 1072 int i, err; 1073 1074 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, 1075 urb->actual_length); 1076 1077 if (!test_bit(HCI_RUNNING, &hdev->flags)) 1078 return; 1079 1080 if (urb->status == 0) { 1081 for (i = 0; i < urb->number_of_packets; i++) { 1082 unsigned int offset = urb->iso_frame_desc[i].offset; 1083 unsigned int length = urb->iso_frame_desc[i].actual_length; 1084 1085 if (urb->iso_frame_desc[i].status) 1086 continue; 1087 1088 hdev->stat.byte_rx += length; 1089 1090 if (btusb_recv_isoc(data, urb->transfer_buffer + offset, 1091 length) < 0) { 1092 bt_dev_err(hdev, "corrupted SCO packet"); 1093 hdev->stat.err_rx++; 1094 } 1095 } 1096 } else if (urb->status == -ENOENT) { 1097 /* Avoid suspend failed when usb_kill_urb */ 1098 return; 1099 } 1100 1101 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags)) 1102 return; 1103 1104 usb_anchor_urb(urb, &data->isoc_anchor); 1105 1106 err = usb_submit_urb(urb, GFP_ATOMIC); 1107 if (err < 0) { 1108 /* -EPERM: urb is being killed; 1109 * -ENODEV: device got disconnected 1110 */ 1111 if (err != -EPERM && err != -ENODEV) 1112 bt_dev_err(hdev, "urb %p failed to resubmit (%d)", 1113 urb, -err); 1114 usb_unanchor_urb(urb); 1115 } 1116 } 1117 1118 static inline void __fill_isoc_descriptor_msbc(struct urb *urb, int len, 1119 int mtu, struct btusb_data *data) 1120 { 1121 int i, offset = 0; 1122 unsigned int interval; 1123 1124 BT_DBG("len %d mtu %d", len, mtu); 1125 1126 /* For mSBC ALT 6 setting the host will send the packet at continuous 1127 * flow. As per core spec 5, vol 4, part B, table 2.1. For ALT setting 1128 * 6 the HCI PACKET INTERVAL should be 7.5ms for every usb packets. 1129 * To maintain the rate we send 63bytes of usb packets alternatively for 1130 * 7ms and 8ms to maintain the rate as 7.5ms. 1131 */ 1132 if (data->usb_alt6_packet_flow) { 1133 interval = 7; 1134 data->usb_alt6_packet_flow = false; 1135 } else { 1136 interval = 6; 1137 data->usb_alt6_packet_flow = true; 1138 } 1139 1140 for (i = 0; i < interval; i++) { 1141 urb->iso_frame_desc[i].offset = offset; 1142 urb->iso_frame_desc[i].length = offset; 1143 } 1144 1145 if (len && i < BTUSB_MAX_ISOC_FRAMES) { 1146 urb->iso_frame_desc[i].offset = offset; 1147 urb->iso_frame_desc[i].length = len; 1148 i++; 1149 } 1150 1151 urb->number_of_packets = i; 1152 } 1153 1154 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu) 1155 { 1156 int i, offset = 0; 1157 1158 BT_DBG("len %d mtu %d", len, mtu); 1159 1160 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu; 1161 i++, offset += mtu, len -= mtu) { 1162 urb->iso_frame_desc[i].offset = offset; 1163 urb->iso_frame_desc[i].length = mtu; 1164 } 1165 1166 if (len && i < BTUSB_MAX_ISOC_FRAMES) { 1167 urb->iso_frame_desc[i].offset = offset; 1168 urb->iso_frame_desc[i].length = len; 1169 i++; 1170 } 1171 1172 urb->number_of_packets = i; 1173 } 1174 1175 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags) 1176 { 1177 struct btusb_data *data = hci_get_drvdata(hdev); 1178 struct urb *urb; 1179 unsigned char *buf; 1180 unsigned int pipe; 1181 int err, size; 1182 1183 BT_DBG("%s", hdev->name); 1184 1185 if (!data->isoc_rx_ep) 1186 return -ENODEV; 1187 1188 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags); 1189 if (!urb) 1190 return -ENOMEM; 1191 1192 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) * 1193 BTUSB_MAX_ISOC_FRAMES; 1194 1195 buf = kmalloc(size, mem_flags); 1196 if (!buf) { 1197 usb_free_urb(urb); 1198 return -ENOMEM; 1199 } 1200 1201 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress); 1202 1203 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete, 1204 hdev, data->isoc_rx_ep->bInterval); 1205 1206 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP; 1207 1208 __fill_isoc_descriptor(urb, size, 1209 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize)); 1210 1211 usb_anchor_urb(urb, &data->isoc_anchor); 1212 1213 err = usb_submit_urb(urb, mem_flags); 1214 if (err < 0) { 1215 if (err != -EPERM && err != -ENODEV) 1216 bt_dev_err(hdev, "urb %p submission failed (%d)", 1217 urb, -err); 1218 usb_unanchor_urb(urb); 1219 } 1220 1221 usb_free_urb(urb); 1222 1223 return err; 1224 } 1225 1226 static void btusb_diag_complete(struct urb *urb) 1227 { 1228 struct hci_dev *hdev = urb->context; 1229 struct btusb_data *data = hci_get_drvdata(hdev); 1230 int err; 1231 1232 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, 1233 urb->actual_length); 1234 1235 if (urb->status == 0) { 1236 struct sk_buff *skb; 1237 1238 skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC); 1239 if (skb) { 1240 skb_put_data(skb, urb->transfer_buffer, 1241 urb->actual_length); 1242 hci_recv_diag(hdev, skb); 1243 } 1244 } else if (urb->status == -ENOENT) { 1245 /* Avoid suspend failed when usb_kill_urb */ 1246 return; 1247 } 1248 1249 if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags)) 1250 return; 1251 1252 usb_anchor_urb(urb, &data->diag_anchor); 1253 usb_mark_last_busy(data->udev); 1254 1255 err = usb_submit_urb(urb, GFP_ATOMIC); 1256 if (err < 0) { 1257 /* -EPERM: urb is being killed; 1258 * -ENODEV: device got disconnected 1259 */ 1260 if (err != -EPERM && err != -ENODEV) 1261 bt_dev_err(hdev, "urb %p failed to resubmit (%d)", 1262 urb, -err); 1263 usb_unanchor_urb(urb); 1264 } 1265 } 1266 1267 static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags) 1268 { 1269 struct btusb_data *data = hci_get_drvdata(hdev); 1270 struct urb *urb; 1271 unsigned char *buf; 1272 unsigned int pipe; 1273 int err, size = HCI_MAX_FRAME_SIZE; 1274 1275 BT_DBG("%s", hdev->name); 1276 1277 if (!data->diag_rx_ep) 1278 return -ENODEV; 1279 1280 urb = usb_alloc_urb(0, mem_flags); 1281 if (!urb) 1282 return -ENOMEM; 1283 1284 buf = kmalloc(size, mem_flags); 1285 if (!buf) { 1286 usb_free_urb(urb); 1287 return -ENOMEM; 1288 } 1289 1290 pipe = usb_rcvbulkpipe(data->udev, data->diag_rx_ep->bEndpointAddress); 1291 1292 usb_fill_bulk_urb(urb, data->udev, pipe, buf, size, 1293 btusb_diag_complete, hdev); 1294 1295 urb->transfer_flags |= URB_FREE_BUFFER; 1296 1297 usb_mark_last_busy(data->udev); 1298 usb_anchor_urb(urb, &data->diag_anchor); 1299 1300 err = usb_submit_urb(urb, mem_flags); 1301 if (err < 0) { 1302 if (err != -EPERM && err != -ENODEV) 1303 bt_dev_err(hdev, "urb %p submission failed (%d)", 1304 urb, -err); 1305 usb_unanchor_urb(urb); 1306 } 1307 1308 usb_free_urb(urb); 1309 1310 return err; 1311 } 1312 1313 static void btusb_tx_complete(struct urb *urb) 1314 { 1315 struct sk_buff *skb = urb->context; 1316 struct hci_dev *hdev = (struct hci_dev *)skb->dev; 1317 struct btusb_data *data = hci_get_drvdata(hdev); 1318 unsigned long flags; 1319 1320 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, 1321 urb->actual_length); 1322 1323 if (!test_bit(HCI_RUNNING, &hdev->flags)) 1324 goto done; 1325 1326 if (!urb->status) 1327 hdev->stat.byte_tx += urb->transfer_buffer_length; 1328 else 1329 hdev->stat.err_tx++; 1330 1331 done: 1332 spin_lock_irqsave(&data->txlock, flags); 1333 data->tx_in_flight--; 1334 spin_unlock_irqrestore(&data->txlock, flags); 1335 1336 kfree(urb->setup_packet); 1337 1338 kfree_skb(skb); 1339 } 1340 1341 static void btusb_isoc_tx_complete(struct urb *urb) 1342 { 1343 struct sk_buff *skb = urb->context; 1344 struct hci_dev *hdev = (struct hci_dev *)skb->dev; 1345 1346 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, 1347 urb->actual_length); 1348 1349 if (!test_bit(HCI_RUNNING, &hdev->flags)) 1350 goto done; 1351 1352 if (!urb->status) 1353 hdev->stat.byte_tx += urb->transfer_buffer_length; 1354 else 1355 hdev->stat.err_tx++; 1356 1357 done: 1358 kfree(urb->setup_packet); 1359 1360 kfree_skb(skb); 1361 } 1362 1363 static int btusb_open(struct hci_dev *hdev) 1364 { 1365 struct btusb_data *data = hci_get_drvdata(hdev); 1366 int err; 1367 1368 BT_DBG("%s", hdev->name); 1369 1370 err = usb_autopm_get_interface(data->intf); 1371 if (err < 0) 1372 return err; 1373 1374 /* Patching USB firmware files prior to starting any URBs of HCI path 1375 * It is more safe to use USB bulk channel for downloading USB patch 1376 */ 1377 if (data->setup_on_usb) { 1378 err = data->setup_on_usb(hdev); 1379 if (err < 0) 1380 goto setup_fail; 1381 } 1382 1383 data->intf->needs_remote_wakeup = 1; 1384 1385 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags)) 1386 goto done; 1387 1388 err = btusb_submit_intr_urb(hdev, GFP_KERNEL); 1389 if (err < 0) 1390 goto failed; 1391 1392 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL); 1393 if (err < 0) { 1394 usb_kill_anchored_urbs(&data->intr_anchor); 1395 goto failed; 1396 } 1397 1398 set_bit(BTUSB_BULK_RUNNING, &data->flags); 1399 btusb_submit_bulk_urb(hdev, GFP_KERNEL); 1400 1401 if (data->diag) { 1402 if (!btusb_submit_diag_urb(hdev, GFP_KERNEL)) 1403 set_bit(BTUSB_DIAG_RUNNING, &data->flags); 1404 } 1405 1406 done: 1407 usb_autopm_put_interface(data->intf); 1408 return 0; 1409 1410 failed: 1411 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 1412 setup_fail: 1413 usb_autopm_put_interface(data->intf); 1414 return err; 1415 } 1416 1417 static void btusb_stop_traffic(struct btusb_data *data) 1418 { 1419 usb_kill_anchored_urbs(&data->intr_anchor); 1420 usb_kill_anchored_urbs(&data->bulk_anchor); 1421 usb_kill_anchored_urbs(&data->isoc_anchor); 1422 usb_kill_anchored_urbs(&data->diag_anchor); 1423 usb_kill_anchored_urbs(&data->ctrl_anchor); 1424 } 1425 1426 static int btusb_close(struct hci_dev *hdev) 1427 { 1428 struct btusb_data *data = hci_get_drvdata(hdev); 1429 int err; 1430 1431 BT_DBG("%s", hdev->name); 1432 1433 cancel_work_sync(&data->work); 1434 cancel_work_sync(&data->waker); 1435 1436 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1437 clear_bit(BTUSB_BULK_RUNNING, &data->flags); 1438 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 1439 clear_bit(BTUSB_DIAG_RUNNING, &data->flags); 1440 1441 btusb_stop_traffic(data); 1442 btusb_free_frags(data); 1443 1444 err = usb_autopm_get_interface(data->intf); 1445 if (err < 0) 1446 goto failed; 1447 1448 data->intf->needs_remote_wakeup = 0; 1449 1450 /* Enable remote wake up for auto-suspend */ 1451 if (test_bit(BTUSB_WAKEUP_AUTOSUSPEND, &data->flags)) 1452 data->intf->needs_remote_wakeup = 1; 1453 1454 usb_autopm_put_interface(data->intf); 1455 1456 failed: 1457 usb_scuttle_anchored_urbs(&data->deferred); 1458 return 0; 1459 } 1460 1461 static int btusb_flush(struct hci_dev *hdev) 1462 { 1463 struct btusb_data *data = hci_get_drvdata(hdev); 1464 1465 BT_DBG("%s", hdev->name); 1466 1467 usb_kill_anchored_urbs(&data->tx_anchor); 1468 btusb_free_frags(data); 1469 1470 return 0; 1471 } 1472 1473 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb) 1474 { 1475 struct btusb_data *data = hci_get_drvdata(hdev); 1476 struct usb_ctrlrequest *dr; 1477 struct urb *urb; 1478 unsigned int pipe; 1479 1480 urb = usb_alloc_urb(0, GFP_KERNEL); 1481 if (!urb) 1482 return ERR_PTR(-ENOMEM); 1483 1484 dr = kmalloc(sizeof(*dr), GFP_KERNEL); 1485 if (!dr) { 1486 usb_free_urb(urb); 1487 return ERR_PTR(-ENOMEM); 1488 } 1489 1490 dr->bRequestType = data->cmdreq_type; 1491 dr->bRequest = data->cmdreq; 1492 dr->wIndex = 0; 1493 dr->wValue = 0; 1494 dr->wLength = __cpu_to_le16(skb->len); 1495 1496 pipe = usb_sndctrlpipe(data->udev, 0x00); 1497 1498 usb_fill_control_urb(urb, data->udev, pipe, (void *)dr, 1499 skb->data, skb->len, btusb_tx_complete, skb); 1500 1501 skb->dev = (void *)hdev; 1502 1503 return urb; 1504 } 1505 1506 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb) 1507 { 1508 struct btusb_data *data = hci_get_drvdata(hdev); 1509 struct urb *urb; 1510 unsigned int pipe; 1511 1512 if (!data->bulk_tx_ep) 1513 return ERR_PTR(-ENODEV); 1514 1515 urb = usb_alloc_urb(0, GFP_KERNEL); 1516 if (!urb) 1517 return ERR_PTR(-ENOMEM); 1518 1519 pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress); 1520 1521 usb_fill_bulk_urb(urb, data->udev, pipe, 1522 skb->data, skb->len, btusb_tx_complete, skb); 1523 1524 skb->dev = (void *)hdev; 1525 1526 return urb; 1527 } 1528 1529 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb) 1530 { 1531 struct btusb_data *data = hci_get_drvdata(hdev); 1532 struct urb *urb; 1533 unsigned int pipe; 1534 1535 if (!data->isoc_tx_ep) 1536 return ERR_PTR(-ENODEV); 1537 1538 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL); 1539 if (!urb) 1540 return ERR_PTR(-ENOMEM); 1541 1542 pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress); 1543 1544 usb_fill_int_urb(urb, data->udev, pipe, 1545 skb->data, skb->len, btusb_isoc_tx_complete, 1546 skb, data->isoc_tx_ep->bInterval); 1547 1548 urb->transfer_flags = URB_ISO_ASAP; 1549 1550 if (data->isoc_altsetting == 6) 1551 __fill_isoc_descriptor_msbc(urb, skb->len, 1552 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize), 1553 data); 1554 else 1555 __fill_isoc_descriptor(urb, skb->len, 1556 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize)); 1557 skb->dev = (void *)hdev; 1558 1559 return urb; 1560 } 1561 1562 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb) 1563 { 1564 struct btusb_data *data = hci_get_drvdata(hdev); 1565 int err; 1566 1567 usb_anchor_urb(urb, &data->tx_anchor); 1568 1569 err = usb_submit_urb(urb, GFP_KERNEL); 1570 if (err < 0) { 1571 if (err != -EPERM && err != -ENODEV) 1572 bt_dev_err(hdev, "urb %p submission failed (%d)", 1573 urb, -err); 1574 kfree(urb->setup_packet); 1575 usb_unanchor_urb(urb); 1576 } else { 1577 usb_mark_last_busy(data->udev); 1578 } 1579 1580 usb_free_urb(urb); 1581 return err; 1582 } 1583 1584 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb) 1585 { 1586 struct btusb_data *data = hci_get_drvdata(hdev); 1587 unsigned long flags; 1588 bool suspending; 1589 1590 spin_lock_irqsave(&data->txlock, flags); 1591 suspending = test_bit(BTUSB_SUSPENDING, &data->flags); 1592 if (!suspending) 1593 data->tx_in_flight++; 1594 spin_unlock_irqrestore(&data->txlock, flags); 1595 1596 if (!suspending) 1597 return submit_tx_urb(hdev, urb); 1598 1599 usb_anchor_urb(urb, &data->deferred); 1600 schedule_work(&data->waker); 1601 1602 usb_free_urb(urb); 1603 return 0; 1604 } 1605 1606 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb) 1607 { 1608 struct urb *urb; 1609 1610 BT_DBG("%s", hdev->name); 1611 1612 switch (hci_skb_pkt_type(skb)) { 1613 case HCI_COMMAND_PKT: 1614 urb = alloc_ctrl_urb(hdev, skb); 1615 if (IS_ERR(urb)) 1616 return PTR_ERR(urb); 1617 1618 hdev->stat.cmd_tx++; 1619 return submit_or_queue_tx_urb(hdev, urb); 1620 1621 case HCI_ACLDATA_PKT: 1622 urb = alloc_bulk_urb(hdev, skb); 1623 if (IS_ERR(urb)) 1624 return PTR_ERR(urb); 1625 1626 hdev->stat.acl_tx++; 1627 return submit_or_queue_tx_urb(hdev, urb); 1628 1629 case HCI_SCODATA_PKT: 1630 if (hci_conn_num(hdev, SCO_LINK) < 1) 1631 return -ENODEV; 1632 1633 urb = alloc_isoc_urb(hdev, skb); 1634 if (IS_ERR(urb)) 1635 return PTR_ERR(urb); 1636 1637 hdev->stat.sco_tx++; 1638 return submit_tx_urb(hdev, urb); 1639 } 1640 1641 return -EILSEQ; 1642 } 1643 1644 static void btusb_notify(struct hci_dev *hdev, unsigned int evt) 1645 { 1646 struct btusb_data *data = hci_get_drvdata(hdev); 1647 1648 BT_DBG("%s evt %d", hdev->name, evt); 1649 1650 if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) { 1651 data->sco_num = hci_conn_num(hdev, SCO_LINK); 1652 data->air_mode = evt; 1653 schedule_work(&data->work); 1654 } 1655 } 1656 1657 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting) 1658 { 1659 struct btusb_data *data = hci_get_drvdata(hdev); 1660 struct usb_interface *intf = data->isoc; 1661 struct usb_endpoint_descriptor *ep_desc; 1662 int i, err; 1663 1664 if (!data->isoc) 1665 return -ENODEV; 1666 1667 err = usb_set_interface(data->udev, data->isoc_ifnum, altsetting); 1668 if (err < 0) { 1669 bt_dev_err(hdev, "setting interface failed (%d)", -err); 1670 return err; 1671 } 1672 1673 data->isoc_altsetting = altsetting; 1674 1675 data->isoc_tx_ep = NULL; 1676 data->isoc_rx_ep = NULL; 1677 1678 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { 1679 ep_desc = &intf->cur_altsetting->endpoint[i].desc; 1680 1681 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) { 1682 data->isoc_tx_ep = ep_desc; 1683 continue; 1684 } 1685 1686 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) { 1687 data->isoc_rx_ep = ep_desc; 1688 continue; 1689 } 1690 } 1691 1692 if (!data->isoc_tx_ep || !data->isoc_rx_ep) { 1693 bt_dev_err(hdev, "invalid SCO descriptors"); 1694 return -ENODEV; 1695 } 1696 1697 return 0; 1698 } 1699 1700 static int btusb_switch_alt_setting(struct hci_dev *hdev, int new_alts) 1701 { 1702 struct btusb_data *data = hci_get_drvdata(hdev); 1703 int err; 1704 1705 if (data->isoc_altsetting != new_alts) { 1706 unsigned long flags; 1707 1708 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1709 usb_kill_anchored_urbs(&data->isoc_anchor); 1710 1711 /* When isochronous alternate setting needs to be 1712 * changed, because SCO connection has been added 1713 * or removed, a packet fragment may be left in the 1714 * reassembling state. This could lead to wrongly 1715 * assembled fragments. 1716 * 1717 * Clear outstanding fragment when selecting a new 1718 * alternate setting. 1719 */ 1720 spin_lock_irqsave(&data->rxlock, flags); 1721 kfree_skb(data->sco_skb); 1722 data->sco_skb = NULL; 1723 spin_unlock_irqrestore(&data->rxlock, flags); 1724 1725 err = __set_isoc_interface(hdev, new_alts); 1726 if (err < 0) 1727 return err; 1728 } 1729 1730 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) { 1731 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0) 1732 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1733 else 1734 btusb_submit_isoc_urb(hdev, GFP_KERNEL); 1735 } 1736 1737 return 0; 1738 } 1739 1740 static struct usb_host_interface *btusb_find_altsetting(struct btusb_data *data, 1741 int alt) 1742 { 1743 struct usb_interface *intf = data->isoc; 1744 int i; 1745 1746 BT_DBG("Looking for Alt no :%d", alt); 1747 1748 if (!intf) 1749 return NULL; 1750 1751 for (i = 0; i < intf->num_altsetting; i++) { 1752 if (intf->altsetting[i].desc.bAlternateSetting == alt) 1753 return &intf->altsetting[i]; 1754 } 1755 1756 return NULL; 1757 } 1758 1759 static void btusb_work(struct work_struct *work) 1760 { 1761 struct btusb_data *data = container_of(work, struct btusb_data, work); 1762 struct hci_dev *hdev = data->hdev; 1763 int new_alts = 0; 1764 int err; 1765 1766 if (data->sco_num > 0) { 1767 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) { 1768 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf); 1769 if (err < 0) { 1770 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1771 usb_kill_anchored_urbs(&data->isoc_anchor); 1772 return; 1773 } 1774 1775 set_bit(BTUSB_DID_ISO_RESUME, &data->flags); 1776 } 1777 1778 if (data->air_mode == HCI_NOTIFY_ENABLE_SCO_CVSD) { 1779 if (hdev->voice_setting & 0x0020) { 1780 static const int alts[3] = { 2, 4, 5 }; 1781 1782 new_alts = alts[data->sco_num - 1]; 1783 } else { 1784 new_alts = data->sco_num; 1785 } 1786 } else if (data->air_mode == HCI_NOTIFY_ENABLE_SCO_TRANSP) { 1787 /* Bluetooth USB spec recommends alt 6 (63 bytes), but 1788 * many adapters do not support it. Alt 1 appears to 1789 * work for all adapters that do not have alt 6, and 1790 * which work with WBS at all. Some devices prefer 1791 * alt 3 (HCI payload >= 60 Bytes let air packet 1792 * data satisfy 60 bytes), requiring 1793 * MTU >= 3 (packets) * 25 (size) - 3 (headers) = 72 1794 * see also Core spec 5, vol 4, B 2.1.1 & Table 2.1. 1795 */ 1796 if (btusb_find_altsetting(data, 6)) 1797 new_alts = 6; 1798 else if (btusb_find_altsetting(data, 3) && 1799 hdev->sco_mtu >= 72 && 1800 test_bit(BTUSB_USE_ALT3_FOR_WBS, &data->flags)) 1801 new_alts = 3; 1802 else 1803 new_alts = 1; 1804 } 1805 1806 if (btusb_switch_alt_setting(hdev, new_alts) < 0) 1807 bt_dev_err(hdev, "set USB alt:(%d) failed!", new_alts); 1808 } else { 1809 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1810 usb_kill_anchored_urbs(&data->isoc_anchor); 1811 1812 __set_isoc_interface(hdev, 0); 1813 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags)) 1814 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf); 1815 } 1816 } 1817 1818 static void btusb_waker(struct work_struct *work) 1819 { 1820 struct btusb_data *data = container_of(work, struct btusb_data, waker); 1821 int err; 1822 1823 err = usb_autopm_get_interface(data->intf); 1824 if (err < 0) 1825 return; 1826 1827 usb_autopm_put_interface(data->intf); 1828 } 1829 1830 static int btusb_setup_bcm92035(struct hci_dev *hdev) 1831 { 1832 struct sk_buff *skb; 1833 u8 val = 0x00; 1834 1835 BT_DBG("%s", hdev->name); 1836 1837 skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT); 1838 if (IS_ERR(skb)) 1839 bt_dev_err(hdev, "BCM92035 command failed (%ld)", PTR_ERR(skb)); 1840 else 1841 kfree_skb(skb); 1842 1843 return 0; 1844 } 1845 1846 static int btusb_setup_csr(struct hci_dev *hdev) 1847 { 1848 struct btusb_data *data = hci_get_drvdata(hdev); 1849 u16 bcdDevice = le16_to_cpu(data->udev->descriptor.bcdDevice); 1850 struct hci_rp_read_local_version *rp; 1851 struct sk_buff *skb; 1852 bool is_fake = false; 1853 int ret; 1854 1855 BT_DBG("%s", hdev->name); 1856 1857 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL, 1858 HCI_INIT_TIMEOUT); 1859 if (IS_ERR(skb)) { 1860 int err = PTR_ERR(skb); 1861 bt_dev_err(hdev, "CSR: Local version failed (%d)", err); 1862 return err; 1863 } 1864 1865 if (skb->len != sizeof(struct hci_rp_read_local_version)) { 1866 bt_dev_err(hdev, "CSR: Local version length mismatch"); 1867 kfree_skb(skb); 1868 return -EIO; 1869 } 1870 1871 rp = (struct hci_rp_read_local_version *)skb->data; 1872 1873 /* Detect a wide host of Chinese controllers that aren't CSR. 1874 * 1875 * Known fake bcdDevices: 0x0100, 0x0134, 0x1915, 0x2520, 0x7558, 0x8891 1876 * 1877 * The main thing they have in common is that these are really popular low-cost 1878 * options that support newer Bluetooth versions but rely on heavy VID/PID 1879 * squatting of this poor old Bluetooth 1.1 device. Even sold as such. 1880 * 1881 * We detect actual CSR devices by checking that the HCI manufacturer code 1882 * is Cambridge Silicon Radio (10) and ensuring that LMP sub-version and 1883 * HCI rev values always match. As they both store the firmware number. 1884 */ 1885 if (le16_to_cpu(rp->manufacturer) != 10 || 1886 le16_to_cpu(rp->hci_rev) != le16_to_cpu(rp->lmp_subver)) 1887 is_fake = true; 1888 1889 /* Known legit CSR firmware build numbers and their supported BT versions: 1890 * - 1.1 (0x1) -> 0x0073, 0x020d, 0x033c, 0x034e 1891 * - 1.2 (0x2) -> 0x04d9, 0x0529 1892 * - 2.0 (0x3) -> 0x07a6, 0x07ad, 0x0c5c 1893 * - 2.1 (0x4) -> 0x149c, 0x1735, 0x1899 (0x1899 is a BlueCore4-External) 1894 * - 4.0 (0x6) -> 0x1d86, 0x2031, 0x22bb 1895 * 1896 * e.g. Real CSR dongles with LMP subversion 0x73 are old enough that 1897 * support BT 1.1 only; so it's a dead giveaway when some 1898 * third-party BT 4.0 dongle reuses it. 1899 */ 1900 else if (le16_to_cpu(rp->lmp_subver) <= 0x034e && 1901 le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_1_1) 1902 is_fake = true; 1903 1904 else if (le16_to_cpu(rp->lmp_subver) <= 0x0529 && 1905 le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_1_2) 1906 is_fake = true; 1907 1908 else if (le16_to_cpu(rp->lmp_subver) <= 0x0c5c && 1909 le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_2_0) 1910 is_fake = true; 1911 1912 else if (le16_to_cpu(rp->lmp_subver) <= 0x1899 && 1913 le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_2_1) 1914 is_fake = true; 1915 1916 else if (le16_to_cpu(rp->lmp_subver) <= 0x22bb && 1917 le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_4_0) 1918 is_fake = true; 1919 1920 /* Other clones which beat all the above checks */ 1921 else if (bcdDevice == 0x0134 && 1922 le16_to_cpu(rp->lmp_subver) == 0x0c5c && 1923 le16_to_cpu(rp->hci_ver) == BLUETOOTH_VER_2_0) 1924 is_fake = true; 1925 1926 if (is_fake) { 1927 bt_dev_warn(hdev, "CSR: Unbranded CSR clone detected; adding workarounds and force-suspending once..."); 1928 1929 /* Generally these clones have big discrepancies between 1930 * advertised features and what's actually supported. 1931 * Probably will need to be expanded in the future; 1932 * without these the controller will lock up. 1933 */ 1934 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks); 1935 set_bit(HCI_QUIRK_BROKEN_ERR_DATA_REPORTING, &hdev->quirks); 1936 1937 /* Clear the reset quirk since this is not an actual 1938 * early Bluetooth 1.1 device from CSR. 1939 */ 1940 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); 1941 clear_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); 1942 1943 /* 1944 * Special workaround for these BT 4.0 chip clones, and potentially more: 1945 * 1946 * - 0x0134: a Barrot 8041a02 (HCI rev: 0x1012 sub: 0x0810) 1947 * - 0x7558: IC markings FR3191AHAL 749H15143 (HCI rev/sub-version: 0x0709) 1948 * 1949 * These controllers are really messed-up. 1950 * 1951 * 1. Their bulk RX endpoint will never report any data unless 1952 * the device was suspended at least once (yes, really). 1953 * 2. They will not wakeup when autosuspended and receiving data 1954 * on their bulk RX endpoint from e.g. a keyboard or mouse 1955 * (IOW remote-wakeup support is broken for the bulk endpoint). 1956 * 1957 * To fix 1. enable runtime-suspend, force-suspend the 1958 * HCI and then wake-it up by disabling runtime-suspend. 1959 * 1960 * To fix 2. clear the HCI's can_wake flag, this way the HCI 1961 * will still be autosuspended when it is not open. 1962 * 1963 * -- 1964 * 1965 * Because these are widespread problems we prefer generic solutions; so 1966 * apply this initialization quirk to every controller that gets here, 1967 * it should be harmless. The alternative is to not work at all. 1968 */ 1969 pm_runtime_allow(&data->udev->dev); 1970 1971 ret = pm_runtime_suspend(&data->udev->dev); 1972 if (ret >= 0) 1973 msleep(200); 1974 else 1975 bt_dev_err(hdev, "CSR: Failed to suspend the device for our Barrot 8041a02 receive-issue workaround"); 1976 1977 pm_runtime_forbid(&data->udev->dev); 1978 1979 device_set_wakeup_capable(&data->udev->dev, false); 1980 1981 /* Re-enable autosuspend if this was requested */ 1982 if (enable_autosuspend) 1983 usb_enable_autosuspend(data->udev); 1984 } 1985 1986 kfree_skb(skb); 1987 1988 return 0; 1989 } 1990 1991 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode) 1992 { 1993 struct sk_buff *skb; 1994 struct hci_event_hdr *hdr; 1995 struct hci_ev_cmd_complete *evt; 1996 1997 skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_KERNEL); 1998 if (!skb) 1999 return -ENOMEM; 2000 2001 hdr = skb_put(skb, sizeof(*hdr)); 2002 hdr->evt = HCI_EV_CMD_COMPLETE; 2003 hdr->plen = sizeof(*evt) + 1; 2004 2005 evt = skb_put(skb, sizeof(*evt)); 2006 evt->ncmd = 0x01; 2007 evt->opcode = cpu_to_le16(opcode); 2008 2009 skb_put_u8(skb, 0x00); 2010 2011 hci_skb_pkt_type(skb) = HCI_EVENT_PKT; 2012 2013 return hci_recv_frame(hdev, skb); 2014 } 2015 2016 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer, 2017 int count) 2018 { 2019 struct hci_dev *hdev = data->hdev; 2020 2021 /* When the device is in bootloader mode, then it can send 2022 * events via the bulk endpoint. These events are treated the 2023 * same way as the ones received from the interrupt endpoint. 2024 */ 2025 if (btintel_test_flag(hdev, INTEL_BOOTLOADER)) 2026 return btusb_recv_intr(data, buffer, count); 2027 2028 return btusb_recv_bulk(data, buffer, count); 2029 } 2030 2031 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb) 2032 { 2033 if (btintel_test_flag(hdev, INTEL_BOOTLOADER)) { 2034 struct hci_event_hdr *hdr = (void *)skb->data; 2035 2036 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff && 2037 hdr->plen > 0) { 2038 const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1; 2039 unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1; 2040 2041 switch (skb->data[2]) { 2042 case 0x02: 2043 /* When switching to the operational firmware 2044 * the device sends a vendor specific event 2045 * indicating that the bootup completed. 2046 */ 2047 btintel_bootup(hdev, ptr, len); 2048 break; 2049 case 0x06: 2050 /* When the firmware loading completes the 2051 * device sends out a vendor specific event 2052 * indicating the result of the firmware 2053 * loading. 2054 */ 2055 btintel_secure_send_result(hdev, ptr, len); 2056 break; 2057 } 2058 } 2059 } 2060 2061 return hci_recv_frame(hdev, skb); 2062 } 2063 2064 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb) 2065 { 2066 struct urb *urb; 2067 2068 BT_DBG("%s", hdev->name); 2069 2070 switch (hci_skb_pkt_type(skb)) { 2071 case HCI_COMMAND_PKT: 2072 if (btintel_test_flag(hdev, INTEL_BOOTLOADER)) { 2073 struct hci_command_hdr *cmd = (void *)skb->data; 2074 __u16 opcode = le16_to_cpu(cmd->opcode); 2075 2076 /* When in bootloader mode and the command 0xfc09 2077 * is received, it needs to be send down the 2078 * bulk endpoint. So allocate a bulk URB instead. 2079 */ 2080 if (opcode == 0xfc09) 2081 urb = alloc_bulk_urb(hdev, skb); 2082 else 2083 urb = alloc_ctrl_urb(hdev, skb); 2084 2085 /* When the 0xfc01 command is issued to boot into 2086 * the operational firmware, it will actually not 2087 * send a command complete event. To keep the flow 2088 * control working inject that event here. 2089 */ 2090 if (opcode == 0xfc01) 2091 inject_cmd_complete(hdev, opcode); 2092 } else { 2093 urb = alloc_ctrl_urb(hdev, skb); 2094 } 2095 if (IS_ERR(urb)) 2096 return PTR_ERR(urb); 2097 2098 hdev->stat.cmd_tx++; 2099 return submit_or_queue_tx_urb(hdev, urb); 2100 2101 case HCI_ACLDATA_PKT: 2102 urb = alloc_bulk_urb(hdev, skb); 2103 if (IS_ERR(urb)) 2104 return PTR_ERR(urb); 2105 2106 hdev->stat.acl_tx++; 2107 return submit_or_queue_tx_urb(hdev, urb); 2108 2109 case HCI_SCODATA_PKT: 2110 if (hci_conn_num(hdev, SCO_LINK) < 1) 2111 return -ENODEV; 2112 2113 urb = alloc_isoc_urb(hdev, skb); 2114 if (IS_ERR(urb)) 2115 return PTR_ERR(urb); 2116 2117 hdev->stat.sco_tx++; 2118 return submit_tx_urb(hdev, urb); 2119 } 2120 2121 return -EILSEQ; 2122 } 2123 2124 /* UHW CR mapping */ 2125 #define MTK_BT_MISC 0x70002510 2126 #define MTK_BT_SUBSYS_RST 0x70002610 2127 #define MTK_UDMA_INT_STA_BT 0x74000024 2128 #define MTK_UDMA_INT_STA_BT1 0x74000308 2129 #define MTK_BT_WDT_STATUS 0x740003A0 2130 #define MTK_EP_RST_OPT 0x74011890 2131 #define MTK_EP_RST_IN_OUT_OPT 0x00010001 2132 #define MTK_BT_RST_DONE 0x00000100 2133 #define MTK_BT_RESET_WAIT_MS 100 2134 #define MTK_BT_RESET_NUM_TRIES 10 2135 2136 static void btusb_mtk_wmt_recv(struct urb *urb) 2137 { 2138 struct hci_dev *hdev = urb->context; 2139 struct btusb_data *data = hci_get_drvdata(hdev); 2140 struct hci_event_hdr *hdr; 2141 struct sk_buff *skb; 2142 int err; 2143 2144 if (urb->status == 0 && urb->actual_length > 0) { 2145 hdev->stat.byte_rx += urb->actual_length; 2146 2147 /* WMT event shouldn't be fragmented and the size should be 2148 * less than HCI_WMT_MAX_EVENT_SIZE. 2149 */ 2150 skb = bt_skb_alloc(HCI_WMT_MAX_EVENT_SIZE, GFP_ATOMIC); 2151 if (!skb) { 2152 hdev->stat.err_rx++; 2153 kfree(urb->setup_packet); 2154 return; 2155 } 2156 2157 hci_skb_pkt_type(skb) = HCI_EVENT_PKT; 2158 skb_put_data(skb, urb->transfer_buffer, urb->actual_length); 2159 2160 hdr = (void *)skb->data; 2161 /* Fix up the vendor event id with 0xff for vendor specific 2162 * instead of 0xe4 so that event send via monitoring socket can 2163 * be parsed properly. 2164 */ 2165 hdr->evt = 0xff; 2166 2167 /* When someone waits for the WMT event, the skb is being cloned 2168 * and being processed the events from there then. 2169 */ 2170 if (test_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags)) { 2171 data->evt_skb = skb_clone(skb, GFP_ATOMIC); 2172 if (!data->evt_skb) { 2173 kfree_skb(skb); 2174 kfree(urb->setup_packet); 2175 return; 2176 } 2177 } 2178 2179 err = hci_recv_frame(hdev, skb); 2180 if (err < 0) { 2181 kfree_skb(data->evt_skb); 2182 data->evt_skb = NULL; 2183 kfree(urb->setup_packet); 2184 return; 2185 } 2186 2187 if (test_and_clear_bit(BTUSB_TX_WAIT_VND_EVT, 2188 &data->flags)) { 2189 /* Barrier to sync with other CPUs */ 2190 smp_mb__after_atomic(); 2191 wake_up_bit(&data->flags, 2192 BTUSB_TX_WAIT_VND_EVT); 2193 } 2194 kfree(urb->setup_packet); 2195 return; 2196 } else if (urb->status == -ENOENT) { 2197 /* Avoid suspend failed when usb_kill_urb */ 2198 return; 2199 } 2200 2201 usb_mark_last_busy(data->udev); 2202 2203 /* The URB complete handler is still called with urb->actual_length = 0 2204 * when the event is not available, so we should keep re-submitting 2205 * URB until WMT event returns, Also, It's necessary to wait some time 2206 * between the two consecutive control URBs to relax the target device 2207 * to generate the event. Otherwise, the WMT event cannot return from 2208 * the device successfully. 2209 */ 2210 udelay(500); 2211 2212 usb_anchor_urb(urb, &data->ctrl_anchor); 2213 err = usb_submit_urb(urb, GFP_ATOMIC); 2214 if (err < 0) { 2215 kfree(urb->setup_packet); 2216 /* -EPERM: urb is being killed; 2217 * -ENODEV: device got disconnected 2218 */ 2219 if (err != -EPERM && err != -ENODEV) 2220 bt_dev_err(hdev, "urb %p failed to resubmit (%d)", 2221 urb, -err); 2222 usb_unanchor_urb(urb); 2223 } 2224 } 2225 2226 static int btusb_mtk_submit_wmt_recv_urb(struct hci_dev *hdev) 2227 { 2228 struct btusb_data *data = hci_get_drvdata(hdev); 2229 struct usb_ctrlrequest *dr; 2230 unsigned char *buf; 2231 int err, size = 64; 2232 unsigned int pipe; 2233 struct urb *urb; 2234 2235 urb = usb_alloc_urb(0, GFP_KERNEL); 2236 if (!urb) 2237 return -ENOMEM; 2238 2239 dr = kmalloc(sizeof(*dr), GFP_KERNEL); 2240 if (!dr) { 2241 usb_free_urb(urb); 2242 return -ENOMEM; 2243 } 2244 2245 dr->bRequestType = USB_TYPE_VENDOR | USB_DIR_IN; 2246 dr->bRequest = 1; 2247 dr->wIndex = cpu_to_le16(0); 2248 dr->wValue = cpu_to_le16(48); 2249 dr->wLength = cpu_to_le16(size); 2250 2251 buf = kmalloc(size, GFP_KERNEL); 2252 if (!buf) { 2253 kfree(dr); 2254 usb_free_urb(urb); 2255 return -ENOMEM; 2256 } 2257 2258 pipe = usb_rcvctrlpipe(data->udev, 0); 2259 2260 usb_fill_control_urb(urb, data->udev, pipe, (void *)dr, 2261 buf, size, btusb_mtk_wmt_recv, hdev); 2262 2263 urb->transfer_flags |= URB_FREE_BUFFER; 2264 2265 usb_anchor_urb(urb, &data->ctrl_anchor); 2266 err = usb_submit_urb(urb, GFP_KERNEL); 2267 if (err < 0) { 2268 if (err != -EPERM && err != -ENODEV) 2269 bt_dev_err(hdev, "urb %p submission failed (%d)", 2270 urb, -err); 2271 usb_unanchor_urb(urb); 2272 } 2273 2274 usb_free_urb(urb); 2275 2276 return err; 2277 } 2278 2279 static int btusb_mtk_hci_wmt_sync(struct hci_dev *hdev, 2280 struct btmtk_hci_wmt_params *wmt_params) 2281 { 2282 struct btusb_data *data = hci_get_drvdata(hdev); 2283 struct btmtk_hci_wmt_evt_funcc *wmt_evt_funcc; 2284 u32 hlen, status = BTMTK_WMT_INVALID; 2285 struct btmtk_hci_wmt_evt *wmt_evt; 2286 struct btmtk_hci_wmt_cmd *wc; 2287 struct btmtk_wmt_hdr *hdr; 2288 int err; 2289 2290 /* Send the WMT command and wait until the WMT event returns */ 2291 hlen = sizeof(*hdr) + wmt_params->dlen; 2292 if (hlen > 255) 2293 return -EINVAL; 2294 2295 wc = kzalloc(hlen, GFP_KERNEL); 2296 if (!wc) 2297 return -ENOMEM; 2298 2299 hdr = &wc->hdr; 2300 hdr->dir = 1; 2301 hdr->op = wmt_params->op; 2302 hdr->dlen = cpu_to_le16(wmt_params->dlen + 1); 2303 hdr->flag = wmt_params->flag; 2304 memcpy(wc->data, wmt_params->data, wmt_params->dlen); 2305 2306 set_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags); 2307 2308 err = __hci_cmd_send(hdev, 0xfc6f, hlen, wc); 2309 2310 if (err < 0) { 2311 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags); 2312 goto err_free_wc; 2313 } 2314 2315 /* Submit control IN URB on demand to process the WMT event */ 2316 err = btusb_mtk_submit_wmt_recv_urb(hdev); 2317 if (err < 0) 2318 goto err_free_wc; 2319 2320 /* The vendor specific WMT commands are all answered by a vendor 2321 * specific event and will have the Command Status or Command 2322 * Complete as with usual HCI command flow control. 2323 * 2324 * After sending the command, wait for BTUSB_TX_WAIT_VND_EVT 2325 * state to be cleared. The driver specific event receive routine 2326 * will clear that state and with that indicate completion of the 2327 * WMT command. 2328 */ 2329 err = wait_on_bit_timeout(&data->flags, BTUSB_TX_WAIT_VND_EVT, 2330 TASK_INTERRUPTIBLE, HCI_INIT_TIMEOUT); 2331 if (err == -EINTR) { 2332 bt_dev_err(hdev, "Execution of wmt command interrupted"); 2333 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags); 2334 goto err_free_wc; 2335 } 2336 2337 if (err) { 2338 bt_dev_err(hdev, "Execution of wmt command timed out"); 2339 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags); 2340 err = -ETIMEDOUT; 2341 goto err_free_wc; 2342 } 2343 2344 /* Parse and handle the return WMT event */ 2345 wmt_evt = (struct btmtk_hci_wmt_evt *)data->evt_skb->data; 2346 if (wmt_evt->whdr.op != hdr->op) { 2347 bt_dev_err(hdev, "Wrong op received %d expected %d", 2348 wmt_evt->whdr.op, hdr->op); 2349 err = -EIO; 2350 goto err_free_skb; 2351 } 2352 2353 switch (wmt_evt->whdr.op) { 2354 case BTMTK_WMT_SEMAPHORE: 2355 if (wmt_evt->whdr.flag == 2) 2356 status = BTMTK_WMT_PATCH_UNDONE; 2357 else 2358 status = BTMTK_WMT_PATCH_DONE; 2359 break; 2360 case BTMTK_WMT_FUNC_CTRL: 2361 wmt_evt_funcc = (struct btmtk_hci_wmt_evt_funcc *)wmt_evt; 2362 if (be16_to_cpu(wmt_evt_funcc->status) == 0x404) 2363 status = BTMTK_WMT_ON_DONE; 2364 else if (be16_to_cpu(wmt_evt_funcc->status) == 0x420) 2365 status = BTMTK_WMT_ON_PROGRESS; 2366 else 2367 status = BTMTK_WMT_ON_UNDONE; 2368 break; 2369 case BTMTK_WMT_PATCH_DWNLD: 2370 if (wmt_evt->whdr.flag == 2) 2371 status = BTMTK_WMT_PATCH_DONE; 2372 else if (wmt_evt->whdr.flag == 1) 2373 status = BTMTK_WMT_PATCH_PROGRESS; 2374 else 2375 status = BTMTK_WMT_PATCH_UNDONE; 2376 break; 2377 } 2378 2379 if (wmt_params->status) 2380 *wmt_params->status = status; 2381 2382 err_free_skb: 2383 kfree_skb(data->evt_skb); 2384 data->evt_skb = NULL; 2385 err_free_wc: 2386 kfree(wc); 2387 return err; 2388 } 2389 2390 static int btusb_mtk_func_query(struct hci_dev *hdev) 2391 { 2392 struct btmtk_hci_wmt_params wmt_params; 2393 int status, err; 2394 u8 param = 0; 2395 2396 /* Query whether the function is enabled */ 2397 wmt_params.op = BTMTK_WMT_FUNC_CTRL; 2398 wmt_params.flag = 4; 2399 wmt_params.dlen = sizeof(param); 2400 wmt_params.data = ¶m; 2401 wmt_params.status = &status; 2402 2403 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params); 2404 if (err < 0) { 2405 bt_dev_err(hdev, "Failed to query function status (%d)", err); 2406 return err; 2407 } 2408 2409 return status; 2410 } 2411 2412 static int btusb_mtk_uhw_reg_write(struct btusb_data *data, u32 reg, u32 val) 2413 { 2414 struct hci_dev *hdev = data->hdev; 2415 int pipe, err; 2416 void *buf; 2417 2418 buf = kzalloc(4, GFP_KERNEL); 2419 if (!buf) 2420 return -ENOMEM; 2421 2422 put_unaligned_le32(val, buf); 2423 2424 pipe = usb_sndctrlpipe(data->udev, 0); 2425 err = usb_control_msg(data->udev, pipe, 0x02, 2426 0x5E, 2427 reg >> 16, reg & 0xffff, 2428 buf, 4, USB_CTRL_SET_TIMEOUT); 2429 if (err < 0) { 2430 bt_dev_err(hdev, "Failed to write uhw reg(%d)", err); 2431 goto err_free_buf; 2432 } 2433 2434 err_free_buf: 2435 kfree(buf); 2436 2437 return err; 2438 } 2439 2440 static int btusb_mtk_uhw_reg_read(struct btusb_data *data, u32 reg, u32 *val) 2441 { 2442 struct hci_dev *hdev = data->hdev; 2443 int pipe, err; 2444 void *buf; 2445 2446 buf = kzalloc(4, GFP_KERNEL); 2447 if (!buf) 2448 return -ENOMEM; 2449 2450 pipe = usb_rcvctrlpipe(data->udev, 0); 2451 err = usb_control_msg(data->udev, pipe, 0x01, 2452 0xDE, 2453 reg >> 16, reg & 0xffff, 2454 buf, 4, USB_CTRL_SET_TIMEOUT); 2455 if (err < 0) { 2456 bt_dev_err(hdev, "Failed to read uhw reg(%d)", err); 2457 goto err_free_buf; 2458 } 2459 2460 *val = get_unaligned_le32(buf); 2461 bt_dev_dbg(hdev, "reg=%x, value=0x%08x", reg, *val); 2462 2463 err_free_buf: 2464 kfree(buf); 2465 2466 return err; 2467 } 2468 2469 static int btusb_mtk_reg_read(struct btusb_data *data, u32 reg, u32 *val) 2470 { 2471 int pipe, err, size = sizeof(u32); 2472 void *buf; 2473 2474 buf = kzalloc(size, GFP_KERNEL); 2475 if (!buf) 2476 return -ENOMEM; 2477 2478 pipe = usb_rcvctrlpipe(data->udev, 0); 2479 err = usb_control_msg(data->udev, pipe, 0x63, 2480 USB_TYPE_VENDOR | USB_DIR_IN, 2481 reg >> 16, reg & 0xffff, 2482 buf, size, USB_CTRL_SET_TIMEOUT); 2483 if (err < 0) 2484 goto err_free_buf; 2485 2486 *val = get_unaligned_le32(buf); 2487 2488 err_free_buf: 2489 kfree(buf); 2490 2491 return err; 2492 } 2493 2494 static int btusb_mtk_id_get(struct btusb_data *data, u32 reg, u32 *id) 2495 { 2496 return btusb_mtk_reg_read(data, reg, id); 2497 } 2498 2499 static int btusb_mtk_setup(struct hci_dev *hdev) 2500 { 2501 struct btusb_data *data = hci_get_drvdata(hdev); 2502 struct btmtk_hci_wmt_params wmt_params; 2503 ktime_t calltime, delta, rettime; 2504 struct btmtk_tci_sleep tci_sleep; 2505 unsigned long long duration; 2506 struct sk_buff *skb; 2507 const char *fwname; 2508 int err, status; 2509 u32 dev_id; 2510 char fw_bin_name[64]; 2511 u32 fw_version = 0; 2512 u8 param; 2513 2514 calltime = ktime_get(); 2515 2516 err = btusb_mtk_id_get(data, 0x80000008, &dev_id); 2517 if (err < 0) { 2518 bt_dev_err(hdev, "Failed to get device id (%d)", err); 2519 return err; 2520 } 2521 2522 if (!dev_id) { 2523 err = btusb_mtk_id_get(data, 0x70010200, &dev_id); 2524 if (err < 0) { 2525 bt_dev_err(hdev, "Failed to get device id (%d)", err); 2526 return err; 2527 } 2528 err = btusb_mtk_id_get(data, 0x80021004, &fw_version); 2529 if (err < 0) { 2530 bt_dev_err(hdev, "Failed to get fw version (%d)", err); 2531 return err; 2532 } 2533 } 2534 2535 switch (dev_id) { 2536 case 0x7663: 2537 fwname = FIRMWARE_MT7663; 2538 break; 2539 case 0x7668: 2540 fwname = FIRMWARE_MT7668; 2541 break; 2542 case 0x7922: 2543 case 0x7961: 2544 snprintf(fw_bin_name, sizeof(fw_bin_name), 2545 "mediatek/BT_RAM_CODE_MT%04x_1_%x_hdr.bin", 2546 dev_id & 0xffff, (fw_version & 0xff) + 1); 2547 err = btmtk_setup_firmware_79xx(hdev, fw_bin_name, 2548 btusb_mtk_hci_wmt_sync); 2549 2550 /* It's Device EndPoint Reset Option Register */ 2551 btusb_mtk_uhw_reg_write(data, MTK_EP_RST_OPT, MTK_EP_RST_IN_OUT_OPT); 2552 2553 /* Enable Bluetooth protocol */ 2554 param = 1; 2555 wmt_params.op = BTMTK_WMT_FUNC_CTRL; 2556 wmt_params.flag = 0; 2557 wmt_params.dlen = sizeof(param); 2558 wmt_params.data = ¶m; 2559 wmt_params.status = NULL; 2560 2561 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params); 2562 if (err < 0) { 2563 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err); 2564 return err; 2565 } 2566 2567 hci_set_msft_opcode(hdev, 0xFD30); 2568 hci_set_aosp_capable(hdev); 2569 goto done; 2570 default: 2571 bt_dev_err(hdev, "Unsupported hardware variant (%08x)", 2572 dev_id); 2573 return -ENODEV; 2574 } 2575 2576 /* Query whether the firmware is already download */ 2577 wmt_params.op = BTMTK_WMT_SEMAPHORE; 2578 wmt_params.flag = 1; 2579 wmt_params.dlen = 0; 2580 wmt_params.data = NULL; 2581 wmt_params.status = &status; 2582 2583 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params); 2584 if (err < 0) { 2585 bt_dev_err(hdev, "Failed to query firmware status (%d)", err); 2586 return err; 2587 } 2588 2589 if (status == BTMTK_WMT_PATCH_DONE) { 2590 bt_dev_info(hdev, "firmware already downloaded"); 2591 goto ignore_setup_fw; 2592 } 2593 2594 /* Setup a firmware which the device definitely requires */ 2595 err = btmtk_setup_firmware(hdev, fwname, 2596 btusb_mtk_hci_wmt_sync); 2597 if (err < 0) 2598 return err; 2599 2600 ignore_setup_fw: 2601 err = readx_poll_timeout(btusb_mtk_func_query, hdev, status, 2602 status < 0 || status != BTMTK_WMT_ON_PROGRESS, 2603 2000, 5000000); 2604 /* -ETIMEDOUT happens */ 2605 if (err < 0) 2606 return err; 2607 2608 /* The other errors happen in btusb_mtk_func_query */ 2609 if (status < 0) 2610 return status; 2611 2612 if (status == BTMTK_WMT_ON_DONE) { 2613 bt_dev_info(hdev, "function already on"); 2614 goto ignore_func_on; 2615 } 2616 2617 /* Enable Bluetooth protocol */ 2618 param = 1; 2619 wmt_params.op = BTMTK_WMT_FUNC_CTRL; 2620 wmt_params.flag = 0; 2621 wmt_params.dlen = sizeof(param); 2622 wmt_params.data = ¶m; 2623 wmt_params.status = NULL; 2624 2625 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params); 2626 if (err < 0) { 2627 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err); 2628 return err; 2629 } 2630 2631 ignore_func_on: 2632 /* Apply the low power environment setup */ 2633 tci_sleep.mode = 0x5; 2634 tci_sleep.duration = cpu_to_le16(0x640); 2635 tci_sleep.host_duration = cpu_to_le16(0x640); 2636 tci_sleep.host_wakeup_pin = 0; 2637 tci_sleep.time_compensation = 0; 2638 2639 skb = __hci_cmd_sync(hdev, 0xfc7a, sizeof(tci_sleep), &tci_sleep, 2640 HCI_INIT_TIMEOUT); 2641 if (IS_ERR(skb)) { 2642 err = PTR_ERR(skb); 2643 bt_dev_err(hdev, "Failed to apply low power setting (%d)", err); 2644 return err; 2645 } 2646 kfree_skb(skb); 2647 2648 done: 2649 rettime = ktime_get(); 2650 delta = ktime_sub(rettime, calltime); 2651 duration = (unsigned long long)ktime_to_ns(delta) >> 10; 2652 2653 bt_dev_info(hdev, "Device setup in %llu usecs", duration); 2654 2655 return 0; 2656 } 2657 2658 static int btusb_mtk_shutdown(struct hci_dev *hdev) 2659 { 2660 struct btmtk_hci_wmt_params wmt_params; 2661 u8 param = 0; 2662 int err; 2663 2664 /* Disable the device */ 2665 wmt_params.op = BTMTK_WMT_FUNC_CTRL; 2666 wmt_params.flag = 0; 2667 wmt_params.dlen = sizeof(param); 2668 wmt_params.data = ¶m; 2669 wmt_params.status = NULL; 2670 2671 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params); 2672 if (err < 0) { 2673 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err); 2674 return err; 2675 } 2676 2677 return 0; 2678 } 2679 2680 static void btusb_mtk_cmd_timeout(struct hci_dev *hdev) 2681 { 2682 struct btusb_data *data = hci_get_drvdata(hdev); 2683 u32 val; 2684 int err, retry = 0; 2685 2686 /* It's MediaTek specific bluetooth reset mechanism via USB */ 2687 if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) { 2688 bt_dev_err(hdev, "last reset failed? Not resetting again"); 2689 return; 2690 } 2691 2692 err = usb_autopm_get_interface(data->intf); 2693 if (err < 0) 2694 return; 2695 2696 btusb_stop_traffic(data); 2697 usb_kill_anchored_urbs(&data->tx_anchor); 2698 2699 /* It's Device EndPoint Reset Option Register */ 2700 bt_dev_dbg(hdev, "Initiating reset mechanism via uhw"); 2701 btusb_mtk_uhw_reg_write(data, MTK_EP_RST_OPT, MTK_EP_RST_IN_OUT_OPT); 2702 btusb_mtk_uhw_reg_read(data, MTK_BT_WDT_STATUS, &val); 2703 2704 /* Reset the bluetooth chip via USB interface. */ 2705 btusb_mtk_uhw_reg_write(data, MTK_BT_SUBSYS_RST, 1); 2706 btusb_mtk_uhw_reg_write(data, MTK_UDMA_INT_STA_BT, 0x000000FF); 2707 btusb_mtk_uhw_reg_read(data, MTK_UDMA_INT_STA_BT, &val); 2708 btusb_mtk_uhw_reg_write(data, MTK_UDMA_INT_STA_BT1, 0x000000FF); 2709 btusb_mtk_uhw_reg_read(data, MTK_UDMA_INT_STA_BT1, &val); 2710 /* MT7921 need to delay 20ms between toggle reset bit */ 2711 msleep(20); 2712 btusb_mtk_uhw_reg_write(data, MTK_BT_SUBSYS_RST, 0); 2713 btusb_mtk_uhw_reg_read(data, MTK_BT_SUBSYS_RST, &val); 2714 2715 /* Poll the register until reset is completed */ 2716 do { 2717 btusb_mtk_uhw_reg_read(data, MTK_BT_MISC, &val); 2718 if (val & MTK_BT_RST_DONE) { 2719 bt_dev_dbg(hdev, "Bluetooth Reset Successfully"); 2720 break; 2721 } 2722 2723 bt_dev_dbg(hdev, "Polling Bluetooth Reset CR"); 2724 retry++; 2725 msleep(MTK_BT_RESET_WAIT_MS); 2726 } while (retry < MTK_BT_RESET_NUM_TRIES); 2727 2728 btusb_mtk_id_get(data, 0x70010200, &val); 2729 if (!val) 2730 bt_dev_err(hdev, "Can't get device id, subsys reset fail."); 2731 2732 usb_queue_reset_device(data->intf); 2733 2734 clear_bit(BTUSB_HW_RESET_ACTIVE, &data->flags); 2735 } 2736 2737 static int btusb_recv_acl_mtk(struct hci_dev *hdev, struct sk_buff *skb) 2738 { 2739 struct btusb_data *data = hci_get_drvdata(hdev); 2740 u16 handle = le16_to_cpu(hci_acl_hdr(skb)->handle); 2741 2742 switch (handle) { 2743 case 0xfc6f: /* Firmware dump from device */ 2744 /* When the firmware hangs, the device can no longer 2745 * suspend and thus disable auto-suspend. 2746 */ 2747 usb_disable_autosuspend(data->udev); 2748 fallthrough; 2749 case 0x05ff: /* Firmware debug logging 1 */ 2750 case 0x05fe: /* Firmware debug logging 2 */ 2751 return hci_recv_diag(hdev, skb); 2752 } 2753 2754 return hci_recv_frame(hdev, skb); 2755 } 2756 2757 #ifdef CONFIG_PM 2758 /* Configure an out-of-band gpio as wake-up pin, if specified in device tree */ 2759 static int marvell_config_oob_wake(struct hci_dev *hdev) 2760 { 2761 struct sk_buff *skb; 2762 struct btusb_data *data = hci_get_drvdata(hdev); 2763 struct device *dev = &data->udev->dev; 2764 u16 pin, gap, opcode; 2765 int ret; 2766 u8 cmd[5]; 2767 2768 /* Move on if no wakeup pin specified */ 2769 if (of_property_read_u16(dev->of_node, "marvell,wakeup-pin", &pin) || 2770 of_property_read_u16(dev->of_node, "marvell,wakeup-gap-ms", &gap)) 2771 return 0; 2772 2773 /* Vendor specific command to configure a GPIO as wake-up pin */ 2774 opcode = hci_opcode_pack(0x3F, 0x59); 2775 cmd[0] = opcode & 0xFF; 2776 cmd[1] = opcode >> 8; 2777 cmd[2] = 2; /* length of parameters that follow */ 2778 cmd[3] = pin; 2779 cmd[4] = gap; /* time in ms, for which wakeup pin should be asserted */ 2780 2781 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL); 2782 if (!skb) { 2783 bt_dev_err(hdev, "%s: No memory", __func__); 2784 return -ENOMEM; 2785 } 2786 2787 skb_put_data(skb, cmd, sizeof(cmd)); 2788 hci_skb_pkt_type(skb) = HCI_COMMAND_PKT; 2789 2790 ret = btusb_send_frame(hdev, skb); 2791 if (ret) { 2792 bt_dev_err(hdev, "%s: configuration failed", __func__); 2793 kfree_skb(skb); 2794 return ret; 2795 } 2796 2797 return 0; 2798 } 2799 #endif 2800 2801 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev, 2802 const bdaddr_t *bdaddr) 2803 { 2804 struct sk_buff *skb; 2805 u8 buf[8]; 2806 long ret; 2807 2808 buf[0] = 0xfe; 2809 buf[1] = sizeof(bdaddr_t); 2810 memcpy(buf + 2, bdaddr, sizeof(bdaddr_t)); 2811 2812 skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT); 2813 if (IS_ERR(skb)) { 2814 ret = PTR_ERR(skb); 2815 bt_dev_err(hdev, "changing Marvell device address failed (%ld)", 2816 ret); 2817 return ret; 2818 } 2819 kfree_skb(skb); 2820 2821 return 0; 2822 } 2823 2824 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev, 2825 const bdaddr_t *bdaddr) 2826 { 2827 struct sk_buff *skb; 2828 u8 buf[10]; 2829 long ret; 2830 2831 buf[0] = 0x01; 2832 buf[1] = 0x01; 2833 buf[2] = 0x00; 2834 buf[3] = sizeof(bdaddr_t); 2835 memcpy(buf + 4, bdaddr, sizeof(bdaddr_t)); 2836 2837 skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT); 2838 if (IS_ERR(skb)) { 2839 ret = PTR_ERR(skb); 2840 bt_dev_err(hdev, "Change address command failed (%ld)", ret); 2841 return ret; 2842 } 2843 kfree_skb(skb); 2844 2845 return 0; 2846 } 2847 2848 static int btusb_set_bdaddr_wcn6855(struct hci_dev *hdev, 2849 const bdaddr_t *bdaddr) 2850 { 2851 struct sk_buff *skb; 2852 u8 buf[6]; 2853 long ret; 2854 2855 memcpy(buf, bdaddr, sizeof(bdaddr_t)); 2856 2857 skb = __hci_cmd_sync_ev(hdev, 0xfc14, sizeof(buf), buf, 2858 HCI_EV_CMD_COMPLETE, HCI_INIT_TIMEOUT); 2859 if (IS_ERR(skb)) { 2860 ret = PTR_ERR(skb); 2861 bt_dev_err(hdev, "Change address command failed (%ld)", ret); 2862 return ret; 2863 } 2864 kfree_skb(skb); 2865 2866 return 0; 2867 } 2868 2869 #define QCA_DFU_PACKET_LEN 4096 2870 2871 #define QCA_GET_TARGET_VERSION 0x09 2872 #define QCA_CHECK_STATUS 0x05 2873 #define QCA_DFU_DOWNLOAD 0x01 2874 2875 #define QCA_SYSCFG_UPDATED 0x40 2876 #define QCA_PATCH_UPDATED 0x80 2877 #define QCA_DFU_TIMEOUT 3000 2878 #define QCA_FLAG_MULTI_NVM 0x80 2879 2880 #define WCN6855_2_0_RAM_VERSION_GF 0x400c1200 2881 #define WCN6855_2_1_RAM_VERSION_GF 0x400c1211 2882 2883 struct qca_version { 2884 __le32 rom_version; 2885 __le32 patch_version; 2886 __le32 ram_version; 2887 __le16 board_id; 2888 __le16 flag; 2889 __u8 reserved[4]; 2890 } __packed; 2891 2892 struct qca_rampatch_version { 2893 __le16 rom_version_high; 2894 __le16 rom_version_low; 2895 __le16 patch_version; 2896 } __packed; 2897 2898 struct qca_device_info { 2899 u32 rom_version; 2900 u8 rampatch_hdr; /* length of header in rampatch */ 2901 u8 nvm_hdr; /* length of header in NVM */ 2902 u8 ver_offset; /* offset of version structure in rampatch */ 2903 }; 2904 2905 static const struct qca_device_info qca_devices_table[] = { 2906 { 0x00000100, 20, 4, 8 }, /* Rome 1.0 */ 2907 { 0x00000101, 20, 4, 8 }, /* Rome 1.1 */ 2908 { 0x00000200, 28, 4, 16 }, /* Rome 2.0 */ 2909 { 0x00000201, 28, 4, 16 }, /* Rome 2.1 */ 2910 { 0x00000300, 28, 4, 16 }, /* Rome 3.0 */ 2911 { 0x00000302, 28, 4, 16 }, /* Rome 3.2 */ 2912 { 0x00130100, 40, 4, 16 }, /* WCN6855 1.0 */ 2913 { 0x00130200, 40, 4, 16 }, /* WCN6855 2.0 */ 2914 { 0x00130201, 40, 4, 16 }, /* WCN6855 2.1 */ 2915 }; 2916 2917 static int btusb_qca_send_vendor_req(struct usb_device *udev, u8 request, 2918 void *data, u16 size) 2919 { 2920 int pipe, err; 2921 u8 *buf; 2922 2923 buf = kmalloc(size, GFP_KERNEL); 2924 if (!buf) 2925 return -ENOMEM; 2926 2927 /* Found some of USB hosts have IOT issues with ours so that we should 2928 * not wait until HCI layer is ready. 2929 */ 2930 pipe = usb_rcvctrlpipe(udev, 0); 2931 err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN, 2932 0, 0, buf, size, USB_CTRL_SET_TIMEOUT); 2933 if (err < 0) { 2934 dev_err(&udev->dev, "Failed to access otp area (%d)", err); 2935 goto done; 2936 } 2937 2938 memcpy(data, buf, size); 2939 2940 done: 2941 kfree(buf); 2942 2943 return err; 2944 } 2945 2946 static int btusb_setup_qca_download_fw(struct hci_dev *hdev, 2947 const struct firmware *firmware, 2948 size_t hdr_size) 2949 { 2950 struct btusb_data *btdata = hci_get_drvdata(hdev); 2951 struct usb_device *udev = btdata->udev; 2952 size_t count, size, sent = 0; 2953 int pipe, len, err; 2954 u8 *buf; 2955 2956 buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL); 2957 if (!buf) 2958 return -ENOMEM; 2959 2960 count = firmware->size; 2961 2962 size = min_t(size_t, count, hdr_size); 2963 memcpy(buf, firmware->data, size); 2964 2965 /* USB patches should go down to controller through USB path 2966 * because binary format fits to go down through USB channel. 2967 * USB control path is for patching headers and USB bulk is for 2968 * patch body. 2969 */ 2970 pipe = usb_sndctrlpipe(udev, 0); 2971 err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR, 2972 0, 0, buf, size, USB_CTRL_SET_TIMEOUT); 2973 if (err < 0) { 2974 bt_dev_err(hdev, "Failed to send headers (%d)", err); 2975 goto done; 2976 } 2977 2978 sent += size; 2979 count -= size; 2980 2981 /* ep2 need time to switch from function acl to function dfu, 2982 * so we add 20ms delay here. 2983 */ 2984 msleep(20); 2985 2986 while (count) { 2987 size = min_t(size_t, count, QCA_DFU_PACKET_LEN); 2988 2989 memcpy(buf, firmware->data + sent, size); 2990 2991 pipe = usb_sndbulkpipe(udev, 0x02); 2992 err = usb_bulk_msg(udev, pipe, buf, size, &len, 2993 QCA_DFU_TIMEOUT); 2994 if (err < 0) { 2995 bt_dev_err(hdev, "Failed to send body at %zd of %zd (%d)", 2996 sent, firmware->size, err); 2997 break; 2998 } 2999 3000 if (size != len) { 3001 bt_dev_err(hdev, "Failed to get bulk buffer"); 3002 err = -EILSEQ; 3003 break; 3004 } 3005 3006 sent += size; 3007 count -= size; 3008 } 3009 3010 done: 3011 kfree(buf); 3012 return err; 3013 } 3014 3015 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev, 3016 struct qca_version *ver, 3017 const struct qca_device_info *info) 3018 { 3019 struct qca_rampatch_version *rver; 3020 const struct firmware *fw; 3021 u32 ver_rom, ver_patch, rver_rom; 3022 u16 rver_rom_low, rver_rom_high, rver_patch; 3023 char fwname[64]; 3024 int err; 3025 3026 ver_rom = le32_to_cpu(ver->rom_version); 3027 ver_patch = le32_to_cpu(ver->patch_version); 3028 3029 snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom); 3030 3031 err = request_firmware(&fw, fwname, &hdev->dev); 3032 if (err) { 3033 bt_dev_err(hdev, "failed to request rampatch file: %s (%d)", 3034 fwname, err); 3035 return err; 3036 } 3037 3038 bt_dev_info(hdev, "using rampatch file: %s", fwname); 3039 3040 rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset); 3041 rver_rom_low = le16_to_cpu(rver->rom_version_low); 3042 rver_patch = le16_to_cpu(rver->patch_version); 3043 3044 if (ver_rom & ~0xffffU) { 3045 rver_rom_high = le16_to_cpu(rver->rom_version_high); 3046 rver_rom = le32_to_cpu(rver_rom_high << 16 | rver_rom_low); 3047 } else { 3048 rver_rom = rver_rom_low; 3049 } 3050 3051 bt_dev_info(hdev, "QCA: patch rome 0x%x build 0x%x, " 3052 "firmware rome 0x%x build 0x%x", 3053 rver_rom, rver_patch, ver_rom, ver_patch); 3054 3055 if (rver_rom != ver_rom || rver_patch <= ver_patch) { 3056 bt_dev_err(hdev, "rampatch file version did not match with firmware"); 3057 err = -EINVAL; 3058 goto done; 3059 } 3060 3061 err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr); 3062 3063 done: 3064 release_firmware(fw); 3065 3066 return err; 3067 } 3068 3069 static void btusb_generate_qca_nvm_name(char *fwname, size_t max_size, 3070 const struct qca_version *ver) 3071 { 3072 u32 rom_version = le32_to_cpu(ver->rom_version); 3073 u16 flag = le16_to_cpu(ver->flag); 3074 3075 if (((flag >> 8) & 0xff) == QCA_FLAG_MULTI_NVM) { 3076 u16 board_id = le16_to_cpu(ver->board_id); 3077 const char *variant; 3078 3079 switch (le32_to_cpu(ver->ram_version)) { 3080 case WCN6855_2_0_RAM_VERSION_GF: 3081 case WCN6855_2_1_RAM_VERSION_GF: 3082 variant = "_gf"; 3083 break; 3084 default: 3085 variant = ""; 3086 break; 3087 } 3088 3089 if (board_id == 0) { 3090 snprintf(fwname, max_size, "qca/nvm_usb_%08x%s.bin", 3091 rom_version, variant); 3092 } else { 3093 snprintf(fwname, max_size, "qca/nvm_usb_%08x%s_%04x.bin", 3094 rom_version, variant, board_id); 3095 } 3096 } else { 3097 snprintf(fwname, max_size, "qca/nvm_usb_%08x.bin", 3098 rom_version); 3099 } 3100 3101 } 3102 3103 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev, 3104 struct qca_version *ver, 3105 const struct qca_device_info *info) 3106 { 3107 const struct firmware *fw; 3108 char fwname[64]; 3109 int err; 3110 3111 btusb_generate_qca_nvm_name(fwname, sizeof(fwname), ver); 3112 3113 err = request_firmware(&fw, fwname, &hdev->dev); 3114 if (err) { 3115 bt_dev_err(hdev, "failed to request NVM file: %s (%d)", 3116 fwname, err); 3117 return err; 3118 } 3119 3120 bt_dev_info(hdev, "using NVM file: %s", fwname); 3121 3122 err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr); 3123 3124 release_firmware(fw); 3125 3126 return err; 3127 } 3128 3129 /* identify the ROM version and check whether patches are needed */ 3130 static bool btusb_qca_need_patch(struct usb_device *udev) 3131 { 3132 struct qca_version ver; 3133 3134 if (btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver, 3135 sizeof(ver)) < 0) 3136 return false; 3137 /* only low ROM versions need patches */ 3138 return !(le32_to_cpu(ver.rom_version) & ~0xffffU); 3139 } 3140 3141 static int btusb_setup_qca(struct hci_dev *hdev) 3142 { 3143 struct btusb_data *btdata = hci_get_drvdata(hdev); 3144 struct usb_device *udev = btdata->udev; 3145 const struct qca_device_info *info = NULL; 3146 struct qca_version ver; 3147 u32 ver_rom; 3148 u8 status; 3149 int i, err; 3150 3151 err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver, 3152 sizeof(ver)); 3153 if (err < 0) 3154 return err; 3155 3156 ver_rom = le32_to_cpu(ver.rom_version); 3157 3158 for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) { 3159 if (ver_rom == qca_devices_table[i].rom_version) 3160 info = &qca_devices_table[i]; 3161 } 3162 if (!info) { 3163 /* If the rom_version is not matched in the qca_devices_table 3164 * and the high ROM version is not zero, we assume this chip no 3165 * need to load the rampatch and nvm. 3166 */ 3167 if (ver_rom & ~0xffffU) 3168 return 0; 3169 3170 bt_dev_err(hdev, "don't support firmware rome 0x%x", ver_rom); 3171 return -ENODEV; 3172 } 3173 3174 err = btusb_qca_send_vendor_req(udev, QCA_CHECK_STATUS, &status, 3175 sizeof(status)); 3176 if (err < 0) 3177 return err; 3178 3179 if (!(status & QCA_PATCH_UPDATED)) { 3180 err = btusb_setup_qca_load_rampatch(hdev, &ver, info); 3181 if (err < 0) 3182 return err; 3183 } 3184 3185 err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver, 3186 sizeof(ver)); 3187 if (err < 0) 3188 return err; 3189 3190 if (!(status & QCA_SYSCFG_UPDATED)) { 3191 err = btusb_setup_qca_load_nvm(hdev, &ver, info); 3192 if (err < 0) 3193 return err; 3194 } 3195 3196 return 0; 3197 } 3198 3199 static inline int __set_diag_interface(struct hci_dev *hdev) 3200 { 3201 struct btusb_data *data = hci_get_drvdata(hdev); 3202 struct usb_interface *intf = data->diag; 3203 int i; 3204 3205 if (!data->diag) 3206 return -ENODEV; 3207 3208 data->diag_tx_ep = NULL; 3209 data->diag_rx_ep = NULL; 3210 3211 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { 3212 struct usb_endpoint_descriptor *ep_desc; 3213 3214 ep_desc = &intf->cur_altsetting->endpoint[i].desc; 3215 3216 if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) { 3217 data->diag_tx_ep = ep_desc; 3218 continue; 3219 } 3220 3221 if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) { 3222 data->diag_rx_ep = ep_desc; 3223 continue; 3224 } 3225 } 3226 3227 if (!data->diag_tx_ep || !data->diag_rx_ep) { 3228 bt_dev_err(hdev, "invalid diagnostic descriptors"); 3229 return -ENODEV; 3230 } 3231 3232 return 0; 3233 } 3234 3235 static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable) 3236 { 3237 struct btusb_data *data = hci_get_drvdata(hdev); 3238 struct sk_buff *skb; 3239 struct urb *urb; 3240 unsigned int pipe; 3241 3242 if (!data->diag_tx_ep) 3243 return ERR_PTR(-ENODEV); 3244 3245 urb = usb_alloc_urb(0, GFP_KERNEL); 3246 if (!urb) 3247 return ERR_PTR(-ENOMEM); 3248 3249 skb = bt_skb_alloc(2, GFP_KERNEL); 3250 if (!skb) { 3251 usb_free_urb(urb); 3252 return ERR_PTR(-ENOMEM); 3253 } 3254 3255 skb_put_u8(skb, 0xf0); 3256 skb_put_u8(skb, enable); 3257 3258 pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress); 3259 3260 usb_fill_bulk_urb(urb, data->udev, pipe, 3261 skb->data, skb->len, btusb_tx_complete, skb); 3262 3263 skb->dev = (void *)hdev; 3264 3265 return urb; 3266 } 3267 3268 static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable) 3269 { 3270 struct btusb_data *data = hci_get_drvdata(hdev); 3271 struct urb *urb; 3272 3273 if (!data->diag) 3274 return -ENODEV; 3275 3276 if (!test_bit(HCI_RUNNING, &hdev->flags)) 3277 return -ENETDOWN; 3278 3279 urb = alloc_diag_urb(hdev, enable); 3280 if (IS_ERR(urb)) 3281 return PTR_ERR(urb); 3282 3283 return submit_or_queue_tx_urb(hdev, urb); 3284 } 3285 3286 #ifdef CONFIG_PM 3287 static irqreturn_t btusb_oob_wake_handler(int irq, void *priv) 3288 { 3289 struct btusb_data *data = priv; 3290 3291 pm_wakeup_event(&data->udev->dev, 0); 3292 pm_system_wakeup(); 3293 3294 /* Disable only if not already disabled (keep it balanced) */ 3295 if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) { 3296 disable_irq_nosync(irq); 3297 disable_irq_wake(irq); 3298 } 3299 return IRQ_HANDLED; 3300 } 3301 3302 static const struct of_device_id btusb_match_table[] = { 3303 { .compatible = "usb1286,204e" }, 3304 { .compatible = "usbcf3,e300" }, /* QCA6174A */ 3305 { .compatible = "usb4ca,301a" }, /* QCA6174A (Lite-On) */ 3306 { } 3307 }; 3308 MODULE_DEVICE_TABLE(of, btusb_match_table); 3309 3310 /* Use an oob wakeup pin? */ 3311 static int btusb_config_oob_wake(struct hci_dev *hdev) 3312 { 3313 struct btusb_data *data = hci_get_drvdata(hdev); 3314 struct device *dev = &data->udev->dev; 3315 int irq, ret; 3316 3317 clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags); 3318 3319 if (!of_match_device(btusb_match_table, dev)) 3320 return 0; 3321 3322 /* Move on if no IRQ specified */ 3323 irq = of_irq_get_byname(dev->of_node, "wakeup"); 3324 if (irq <= 0) { 3325 bt_dev_dbg(hdev, "%s: no OOB Wakeup IRQ in DT", __func__); 3326 return 0; 3327 } 3328 3329 irq_set_status_flags(irq, IRQ_NOAUTOEN); 3330 ret = devm_request_irq(&hdev->dev, irq, btusb_oob_wake_handler, 3331 0, "OOB Wake-on-BT", data); 3332 if (ret) { 3333 bt_dev_err(hdev, "%s: IRQ request failed", __func__); 3334 return ret; 3335 } 3336 3337 ret = device_init_wakeup(dev, true); 3338 if (ret) { 3339 bt_dev_err(hdev, "%s: failed to init_wakeup", __func__); 3340 return ret; 3341 } 3342 3343 data->oob_wake_irq = irq; 3344 bt_dev_info(hdev, "OOB Wake-on-BT configured at IRQ %u", irq); 3345 return 0; 3346 } 3347 #endif 3348 3349 static void btusb_check_needs_reset_resume(struct usb_interface *intf) 3350 { 3351 if (dmi_check_system(btusb_needs_reset_resume_table)) 3352 interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME; 3353 } 3354 3355 static bool btusb_wakeup(struct hci_dev *hdev) 3356 { 3357 struct btusb_data *data = hci_get_drvdata(hdev); 3358 3359 return device_may_wakeup(&data->udev->dev); 3360 } 3361 3362 static int btusb_shutdown_qca(struct hci_dev *hdev) 3363 { 3364 struct sk_buff *skb; 3365 3366 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT); 3367 if (IS_ERR(skb)) { 3368 bt_dev_err(hdev, "HCI reset during shutdown failed"); 3369 return PTR_ERR(skb); 3370 } 3371 kfree_skb(skb); 3372 3373 return 0; 3374 } 3375 3376 static int btusb_probe(struct usb_interface *intf, 3377 const struct usb_device_id *id) 3378 { 3379 struct usb_endpoint_descriptor *ep_desc; 3380 struct gpio_desc *reset_gpio; 3381 struct btusb_data *data; 3382 struct hci_dev *hdev; 3383 unsigned ifnum_base; 3384 int i, err, priv_size; 3385 3386 BT_DBG("intf %p id %p", intf, id); 3387 3388 /* interface numbers are hardcoded in the spec */ 3389 if (intf->cur_altsetting->desc.bInterfaceNumber != 0) { 3390 if (!(id->driver_info & BTUSB_IFNUM_2)) 3391 return -ENODEV; 3392 if (intf->cur_altsetting->desc.bInterfaceNumber != 2) 3393 return -ENODEV; 3394 } 3395 3396 ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber; 3397 3398 if (!id->driver_info) { 3399 const struct usb_device_id *match; 3400 3401 match = usb_match_id(intf, blacklist_table); 3402 if (match) 3403 id = match; 3404 } 3405 3406 if (id->driver_info == BTUSB_IGNORE) 3407 return -ENODEV; 3408 3409 if (id->driver_info & BTUSB_ATH3012) { 3410 struct usb_device *udev = interface_to_usbdev(intf); 3411 3412 /* Old firmware would otherwise let ath3k driver load 3413 * patch and sysconfig files 3414 */ 3415 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001 && 3416 !btusb_qca_need_patch(udev)) 3417 return -ENODEV; 3418 } 3419 3420 data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL); 3421 if (!data) 3422 return -ENOMEM; 3423 3424 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { 3425 ep_desc = &intf->cur_altsetting->endpoint[i].desc; 3426 3427 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) { 3428 data->intr_ep = ep_desc; 3429 continue; 3430 } 3431 3432 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) { 3433 data->bulk_tx_ep = ep_desc; 3434 continue; 3435 } 3436 3437 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) { 3438 data->bulk_rx_ep = ep_desc; 3439 continue; 3440 } 3441 } 3442 3443 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) 3444 return -ENODEV; 3445 3446 if (id->driver_info & BTUSB_AMP) { 3447 data->cmdreq_type = USB_TYPE_CLASS | 0x01; 3448 data->cmdreq = 0x2b; 3449 } else { 3450 data->cmdreq_type = USB_TYPE_CLASS; 3451 data->cmdreq = 0x00; 3452 } 3453 3454 data->udev = interface_to_usbdev(intf); 3455 data->intf = intf; 3456 3457 INIT_WORK(&data->work, btusb_work); 3458 INIT_WORK(&data->waker, btusb_waker); 3459 init_usb_anchor(&data->deferred); 3460 init_usb_anchor(&data->tx_anchor); 3461 spin_lock_init(&data->txlock); 3462 3463 init_usb_anchor(&data->intr_anchor); 3464 init_usb_anchor(&data->bulk_anchor); 3465 init_usb_anchor(&data->isoc_anchor); 3466 init_usb_anchor(&data->diag_anchor); 3467 init_usb_anchor(&data->ctrl_anchor); 3468 spin_lock_init(&data->rxlock); 3469 3470 priv_size = 0; 3471 3472 data->recv_event = hci_recv_frame; 3473 data->recv_bulk = btusb_recv_bulk; 3474 3475 if (id->driver_info & BTUSB_INTEL_COMBINED) { 3476 /* Allocate extra space for Intel device */ 3477 priv_size += sizeof(struct btintel_data); 3478 3479 /* Override the rx handlers */ 3480 data->recv_event = btusb_recv_event_intel; 3481 data->recv_bulk = btusb_recv_bulk_intel; 3482 } 3483 3484 data->recv_acl = hci_recv_frame; 3485 3486 hdev = hci_alloc_dev_priv(priv_size); 3487 if (!hdev) 3488 return -ENOMEM; 3489 3490 hdev->bus = HCI_USB; 3491 hci_set_drvdata(hdev, data); 3492 3493 if (id->driver_info & BTUSB_AMP) 3494 hdev->dev_type = HCI_AMP; 3495 else 3496 hdev->dev_type = HCI_PRIMARY; 3497 3498 data->hdev = hdev; 3499 3500 SET_HCIDEV_DEV(hdev, &intf->dev); 3501 3502 reset_gpio = gpiod_get_optional(&data->udev->dev, "reset", 3503 GPIOD_OUT_LOW); 3504 if (IS_ERR(reset_gpio)) { 3505 err = PTR_ERR(reset_gpio); 3506 goto out_free_dev; 3507 } else if (reset_gpio) { 3508 data->reset_gpio = reset_gpio; 3509 } 3510 3511 hdev->open = btusb_open; 3512 hdev->close = btusb_close; 3513 hdev->flush = btusb_flush; 3514 hdev->send = btusb_send_frame; 3515 hdev->notify = btusb_notify; 3516 hdev->wakeup = btusb_wakeup; 3517 3518 #ifdef CONFIG_PM 3519 err = btusb_config_oob_wake(hdev); 3520 if (err) 3521 goto out_free_dev; 3522 3523 /* Marvell devices may need a specific chip configuration */ 3524 if (id->driver_info & BTUSB_MARVELL && data->oob_wake_irq) { 3525 err = marvell_config_oob_wake(hdev); 3526 if (err) 3527 goto out_free_dev; 3528 } 3529 #endif 3530 if (id->driver_info & BTUSB_CW6622) 3531 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks); 3532 3533 if (id->driver_info & BTUSB_BCM2045) 3534 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks); 3535 3536 if (id->driver_info & BTUSB_BCM92035) 3537 hdev->setup = btusb_setup_bcm92035; 3538 3539 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) && 3540 (id->driver_info & BTUSB_BCM_PATCHRAM)) { 3541 hdev->manufacturer = 15; 3542 hdev->setup = btbcm_setup_patchram; 3543 hdev->set_diag = btusb_bcm_set_diag; 3544 hdev->set_bdaddr = btbcm_set_bdaddr; 3545 3546 /* Broadcom LM_DIAG Interface numbers are hardcoded */ 3547 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2); 3548 } 3549 3550 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) && 3551 (id->driver_info & BTUSB_BCM_APPLE)) { 3552 hdev->manufacturer = 15; 3553 hdev->setup = btbcm_setup_apple; 3554 hdev->set_diag = btusb_bcm_set_diag; 3555 3556 /* Broadcom LM_DIAG Interface numbers are hardcoded */ 3557 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2); 3558 } 3559 3560 /* Combined Intel Device setup to support multiple setup routine */ 3561 if (id->driver_info & BTUSB_INTEL_COMBINED) { 3562 err = btintel_configure_setup(hdev); 3563 if (err) 3564 goto out_free_dev; 3565 3566 /* Transport specific configuration */ 3567 hdev->send = btusb_send_frame_intel; 3568 hdev->cmd_timeout = btusb_intel_cmd_timeout; 3569 3570 if (id->driver_info & BTUSB_INTEL_BROKEN_INITIAL_NCMD) 3571 btintel_set_flag(hdev, INTEL_BROKEN_INITIAL_NCMD); 3572 } 3573 3574 if (id->driver_info & BTUSB_MARVELL) 3575 hdev->set_bdaddr = btusb_set_bdaddr_marvell; 3576 3577 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_MTK) && 3578 (id->driver_info & BTUSB_MEDIATEK)) { 3579 hdev->setup = btusb_mtk_setup; 3580 hdev->shutdown = btusb_mtk_shutdown; 3581 hdev->manufacturer = 70; 3582 hdev->cmd_timeout = btusb_mtk_cmd_timeout; 3583 hdev->set_bdaddr = btmtk_set_bdaddr; 3584 set_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks); 3585 data->recv_acl = btusb_recv_acl_mtk; 3586 } 3587 3588 if (id->driver_info & BTUSB_SWAVE) { 3589 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks); 3590 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks); 3591 } 3592 3593 if (id->driver_info & BTUSB_INTEL_BOOT) { 3594 hdev->manufacturer = 2; 3595 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks); 3596 } 3597 3598 if (id->driver_info & BTUSB_ATH3012) { 3599 data->setup_on_usb = btusb_setup_qca; 3600 hdev->set_bdaddr = btusb_set_bdaddr_ath3012; 3601 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); 3602 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks); 3603 } 3604 3605 if (id->driver_info & BTUSB_QCA_ROME) { 3606 data->setup_on_usb = btusb_setup_qca; 3607 hdev->set_bdaddr = btusb_set_bdaddr_ath3012; 3608 hdev->cmd_timeout = btusb_qca_cmd_timeout; 3609 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); 3610 btusb_check_needs_reset_resume(intf); 3611 } 3612 3613 if (id->driver_info & BTUSB_QCA_WCN6855) { 3614 data->setup_on_usb = btusb_setup_qca; 3615 hdev->shutdown = btusb_shutdown_qca; 3616 hdev->set_bdaddr = btusb_set_bdaddr_wcn6855; 3617 hdev->cmd_timeout = btusb_qca_cmd_timeout; 3618 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); 3619 hci_set_msft_opcode(hdev, 0xFD70); 3620 } 3621 3622 if (id->driver_info & BTUSB_AMP) { 3623 /* AMP controllers do not support SCO packets */ 3624 data->isoc = NULL; 3625 } else { 3626 /* Interface orders are hardcoded in the specification */ 3627 data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1); 3628 data->isoc_ifnum = ifnum_base + 1; 3629 } 3630 3631 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_RTL) && 3632 (id->driver_info & BTUSB_REALTEK)) { 3633 hdev->setup = btrtl_setup_realtek; 3634 hdev->shutdown = btrtl_shutdown_realtek; 3635 hdev->cmd_timeout = btusb_rtl_cmd_timeout; 3636 3637 /* Realtek devices need to set remote wakeup on auto-suspend */ 3638 set_bit(BTUSB_WAKEUP_AUTOSUSPEND, &data->flags); 3639 set_bit(BTUSB_USE_ALT3_FOR_WBS, &data->flags); 3640 } 3641 3642 if (!reset) 3643 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); 3644 3645 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) { 3646 if (!disable_scofix) 3647 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks); 3648 } 3649 3650 if (id->driver_info & BTUSB_BROKEN_ISOC) 3651 data->isoc = NULL; 3652 3653 if (id->driver_info & BTUSB_WIDEBAND_SPEECH) 3654 set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED, &hdev->quirks); 3655 3656 if (id->driver_info & BTUSB_VALID_LE_STATES) 3657 set_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks); 3658 3659 if (id->driver_info & BTUSB_DIGIANSWER) { 3660 data->cmdreq_type = USB_TYPE_VENDOR; 3661 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); 3662 } 3663 3664 if (id->driver_info & BTUSB_CSR) { 3665 struct usb_device *udev = data->udev; 3666 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice); 3667 3668 /* Old firmware would otherwise execute USB reset */ 3669 if (bcdDevice < 0x117) 3670 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); 3671 3672 /* This must be set first in case we disable it for fakes */ 3673 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); 3674 3675 /* Fake CSR devices with broken commands */ 3676 if (le16_to_cpu(udev->descriptor.idVendor) == 0x0a12 && 3677 le16_to_cpu(udev->descriptor.idProduct) == 0x0001) 3678 hdev->setup = btusb_setup_csr; 3679 } 3680 3681 if (id->driver_info & BTUSB_SNIFFER) { 3682 struct usb_device *udev = data->udev; 3683 3684 /* New sniffer firmware has crippled HCI interface */ 3685 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997) 3686 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks); 3687 } 3688 3689 if (id->driver_info & BTUSB_INTEL_BOOT) { 3690 /* A bug in the bootloader causes that interrupt interface is 3691 * only enabled after receiving SetInterface(0, AltSetting=0). 3692 */ 3693 err = usb_set_interface(data->udev, 0, 0); 3694 if (err < 0) { 3695 BT_ERR("failed to set interface 0, alt 0 %d", err); 3696 goto out_free_dev; 3697 } 3698 } 3699 3700 if (data->isoc) { 3701 err = usb_driver_claim_interface(&btusb_driver, 3702 data->isoc, data); 3703 if (err < 0) 3704 goto out_free_dev; 3705 } 3706 3707 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) && data->diag) { 3708 if (!usb_driver_claim_interface(&btusb_driver, 3709 data->diag, data)) 3710 __set_diag_interface(hdev); 3711 else 3712 data->diag = NULL; 3713 } 3714 3715 if (enable_autosuspend) 3716 usb_enable_autosuspend(data->udev); 3717 3718 err = hci_register_dev(hdev); 3719 if (err < 0) 3720 goto out_free_dev; 3721 3722 usb_set_intfdata(intf, data); 3723 3724 return 0; 3725 3726 out_free_dev: 3727 if (data->reset_gpio) 3728 gpiod_put(data->reset_gpio); 3729 hci_free_dev(hdev); 3730 return err; 3731 } 3732 3733 static void btusb_disconnect(struct usb_interface *intf) 3734 { 3735 struct btusb_data *data = usb_get_intfdata(intf); 3736 struct hci_dev *hdev; 3737 3738 BT_DBG("intf %p", intf); 3739 3740 if (!data) 3741 return; 3742 3743 hdev = data->hdev; 3744 usb_set_intfdata(data->intf, NULL); 3745 3746 if (data->isoc) 3747 usb_set_intfdata(data->isoc, NULL); 3748 3749 if (data->diag) 3750 usb_set_intfdata(data->diag, NULL); 3751 3752 hci_unregister_dev(hdev); 3753 3754 if (intf == data->intf) { 3755 if (data->isoc) 3756 usb_driver_release_interface(&btusb_driver, data->isoc); 3757 if (data->diag) 3758 usb_driver_release_interface(&btusb_driver, data->diag); 3759 } else if (intf == data->isoc) { 3760 if (data->diag) 3761 usb_driver_release_interface(&btusb_driver, data->diag); 3762 usb_driver_release_interface(&btusb_driver, data->intf); 3763 } else if (intf == data->diag) { 3764 usb_driver_release_interface(&btusb_driver, data->intf); 3765 if (data->isoc) 3766 usb_driver_release_interface(&btusb_driver, data->isoc); 3767 } 3768 3769 if (data->oob_wake_irq) 3770 device_init_wakeup(&data->udev->dev, false); 3771 3772 if (data->reset_gpio) 3773 gpiod_put(data->reset_gpio); 3774 3775 hci_free_dev(hdev); 3776 } 3777 3778 #ifdef CONFIG_PM 3779 static int btusb_suspend(struct usb_interface *intf, pm_message_t message) 3780 { 3781 struct btusb_data *data = usb_get_intfdata(intf); 3782 3783 BT_DBG("intf %p", intf); 3784 3785 if (data->suspend_count++) 3786 return 0; 3787 3788 spin_lock_irq(&data->txlock); 3789 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) { 3790 set_bit(BTUSB_SUSPENDING, &data->flags); 3791 spin_unlock_irq(&data->txlock); 3792 } else { 3793 spin_unlock_irq(&data->txlock); 3794 data->suspend_count--; 3795 return -EBUSY; 3796 } 3797 3798 cancel_work_sync(&data->work); 3799 3800 btusb_stop_traffic(data); 3801 usb_kill_anchored_urbs(&data->tx_anchor); 3802 3803 if (data->oob_wake_irq && device_may_wakeup(&data->udev->dev)) { 3804 set_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags); 3805 enable_irq_wake(data->oob_wake_irq); 3806 enable_irq(data->oob_wake_irq); 3807 } 3808 3809 /* For global suspend, Realtek devices lose the loaded fw 3810 * in them. But for autosuspend, firmware should remain. 3811 * Actually, it depends on whether the usb host sends 3812 * set feature (enable wakeup) or not. 3813 */ 3814 if (test_bit(BTUSB_WAKEUP_AUTOSUSPEND, &data->flags)) { 3815 if (PMSG_IS_AUTO(message) && 3816 device_can_wakeup(&data->udev->dev)) 3817 data->udev->do_remote_wakeup = 1; 3818 else if (!PMSG_IS_AUTO(message) && 3819 !device_may_wakeup(&data->udev->dev)) { 3820 data->udev->do_remote_wakeup = 0; 3821 data->udev->reset_resume = 1; 3822 } 3823 } 3824 3825 return 0; 3826 } 3827 3828 static void play_deferred(struct btusb_data *data) 3829 { 3830 struct urb *urb; 3831 int err; 3832 3833 while ((urb = usb_get_from_anchor(&data->deferred))) { 3834 usb_anchor_urb(urb, &data->tx_anchor); 3835 3836 err = usb_submit_urb(urb, GFP_ATOMIC); 3837 if (err < 0) { 3838 if (err != -EPERM && err != -ENODEV) 3839 BT_ERR("%s urb %p submission failed (%d)", 3840 data->hdev->name, urb, -err); 3841 kfree(urb->setup_packet); 3842 usb_unanchor_urb(urb); 3843 usb_free_urb(urb); 3844 break; 3845 } 3846 3847 data->tx_in_flight++; 3848 usb_free_urb(urb); 3849 } 3850 3851 /* Cleanup the rest deferred urbs. */ 3852 while ((urb = usb_get_from_anchor(&data->deferred))) { 3853 kfree(urb->setup_packet); 3854 usb_free_urb(urb); 3855 } 3856 } 3857 3858 static int btusb_resume(struct usb_interface *intf) 3859 { 3860 struct btusb_data *data = usb_get_intfdata(intf); 3861 struct hci_dev *hdev = data->hdev; 3862 int err = 0; 3863 3864 BT_DBG("intf %p", intf); 3865 3866 if (--data->suspend_count) 3867 return 0; 3868 3869 /* Disable only if not already disabled (keep it balanced) */ 3870 if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) { 3871 disable_irq(data->oob_wake_irq); 3872 disable_irq_wake(data->oob_wake_irq); 3873 } 3874 3875 if (!test_bit(HCI_RUNNING, &hdev->flags)) 3876 goto done; 3877 3878 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) { 3879 err = btusb_submit_intr_urb(hdev, GFP_NOIO); 3880 if (err < 0) { 3881 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 3882 goto failed; 3883 } 3884 } 3885 3886 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) { 3887 err = btusb_submit_bulk_urb(hdev, GFP_NOIO); 3888 if (err < 0) { 3889 clear_bit(BTUSB_BULK_RUNNING, &data->flags); 3890 goto failed; 3891 } 3892 3893 btusb_submit_bulk_urb(hdev, GFP_NOIO); 3894 } 3895 3896 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) { 3897 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0) 3898 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 3899 else 3900 btusb_submit_isoc_urb(hdev, GFP_NOIO); 3901 } 3902 3903 spin_lock_irq(&data->txlock); 3904 play_deferred(data); 3905 clear_bit(BTUSB_SUSPENDING, &data->flags); 3906 spin_unlock_irq(&data->txlock); 3907 schedule_work(&data->work); 3908 3909 return 0; 3910 3911 failed: 3912 usb_scuttle_anchored_urbs(&data->deferred); 3913 done: 3914 spin_lock_irq(&data->txlock); 3915 clear_bit(BTUSB_SUSPENDING, &data->flags); 3916 spin_unlock_irq(&data->txlock); 3917 3918 return err; 3919 } 3920 #endif 3921 3922 static struct usb_driver btusb_driver = { 3923 .name = "btusb", 3924 .probe = btusb_probe, 3925 .disconnect = btusb_disconnect, 3926 #ifdef CONFIG_PM 3927 .suspend = btusb_suspend, 3928 .resume = btusb_resume, 3929 #endif 3930 .id_table = btusb_table, 3931 .supports_autosuspend = 1, 3932 .disable_hub_initiated_lpm = 1, 3933 }; 3934 3935 module_usb_driver(btusb_driver); 3936 3937 module_param(disable_scofix, bool, 0644); 3938 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size"); 3939 3940 module_param(force_scofix, bool, 0644); 3941 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size"); 3942 3943 module_param(enable_autosuspend, bool, 0644); 3944 MODULE_PARM_DESC(enable_autosuspend, "Enable USB autosuspend by default"); 3945 3946 module_param(reset, bool, 0644); 3947 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization"); 3948 3949 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); 3950 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION); 3951 MODULE_VERSION(VERSION); 3952 MODULE_LICENSE("GPL"); 3953