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 <linux/debugfs.h> 20 #include <asm/unaligned.h> 21 22 #include <net/bluetooth/bluetooth.h> 23 #include <net/bluetooth/hci_core.h> 24 25 #include "btintel.h" 26 #include "btbcm.h" 27 #include "btrtl.h" 28 #include "btmtk.h" 29 30 #define VERSION "0.8" 31 32 static bool disable_scofix; 33 static bool force_scofix; 34 static bool enable_autosuspend = IS_ENABLED(CONFIG_BT_HCIBTUSB_AUTOSUSPEND); 35 static bool reset = true; 36 37 static struct usb_driver btusb_driver; 38 39 #define BTUSB_IGNORE BIT(0) 40 #define BTUSB_DIGIANSWER BIT(1) 41 #define BTUSB_CSR BIT(2) 42 #define BTUSB_SNIFFER BIT(3) 43 #define BTUSB_BCM92035 BIT(4) 44 #define BTUSB_BROKEN_ISOC BIT(5) 45 #define BTUSB_WRONG_SCO_MTU BIT(6) 46 #define BTUSB_ATH3012 BIT(7) 47 #define BTUSB_INTEL_COMBINED BIT(8) 48 #define BTUSB_INTEL_BOOT BIT(9) 49 #define BTUSB_BCM_PATCHRAM BIT(10) 50 #define BTUSB_MARVELL BIT(11) 51 #define BTUSB_SWAVE BIT(12) 52 #define BTUSB_AMP BIT(13) 53 #define BTUSB_QCA_ROME BIT(14) 54 #define BTUSB_BCM_APPLE BIT(15) 55 #define BTUSB_REALTEK BIT(16) 56 #define BTUSB_BCM2045 BIT(17) 57 #define BTUSB_IFNUM_2 BIT(18) 58 #define BTUSB_CW6622 BIT(19) 59 #define BTUSB_MEDIATEK BIT(20) 60 #define BTUSB_WIDEBAND_SPEECH BIT(21) 61 #define BTUSB_VALID_LE_STATES BIT(22) 62 #define BTUSB_QCA_WCN6855 BIT(23) 63 #define BTUSB_INTEL_BROKEN_SHUTDOWN_LED BIT(24) 64 #define BTUSB_INTEL_BROKEN_INITIAL_NCMD BIT(25) 65 #define BTUSB_INTEL_NO_WBS_SUPPORT BIT(26) 66 67 static const struct usb_device_id btusb_table[] = { 68 /* Generic Bluetooth USB device */ 69 { USB_DEVICE_INFO(0xe0, 0x01, 0x01) }, 70 71 /* Generic Bluetooth AMP device */ 72 { USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP }, 73 74 /* Generic Bluetooth USB interface */ 75 { USB_INTERFACE_INFO(0xe0, 0x01, 0x01) }, 76 77 /* Apple-specific (Broadcom) devices */ 78 { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01), 79 .driver_info = BTUSB_BCM_APPLE | BTUSB_IFNUM_2 }, 80 81 /* MediaTek MT76x0E */ 82 { USB_DEVICE(0x0e8d, 0x763f) }, 83 84 /* Broadcom SoftSailing reporting vendor specific */ 85 { USB_DEVICE(0x0a5c, 0x21e1) }, 86 87 /* Apple MacBookPro 7,1 */ 88 { USB_DEVICE(0x05ac, 0x8213) }, 89 90 /* Apple iMac11,1 */ 91 { USB_DEVICE(0x05ac, 0x8215) }, 92 93 /* Apple MacBookPro6,2 */ 94 { USB_DEVICE(0x05ac, 0x8218) }, 95 96 /* Apple MacBookAir3,1, MacBookAir3,2 */ 97 { USB_DEVICE(0x05ac, 0x821b) }, 98 99 /* Apple MacBookAir4,1 */ 100 { USB_DEVICE(0x05ac, 0x821f) }, 101 102 /* Apple MacBookPro8,2 */ 103 { USB_DEVICE(0x05ac, 0x821a) }, 104 105 /* Apple MacMini5,1 */ 106 { USB_DEVICE(0x05ac, 0x8281) }, 107 108 /* AVM BlueFRITZ! USB v2.0 */ 109 { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE }, 110 111 /* Bluetooth Ultraport Module from IBM */ 112 { USB_DEVICE(0x04bf, 0x030a) }, 113 114 /* ALPS Modules with non-standard id */ 115 { USB_DEVICE(0x044e, 0x3001) }, 116 { USB_DEVICE(0x044e, 0x3002) }, 117 118 /* Ericsson with non-standard id */ 119 { USB_DEVICE(0x0bdb, 0x1002) }, 120 121 /* Canyon CN-BTU1 with HID interfaces */ 122 { USB_DEVICE(0x0c10, 0x0000) }, 123 124 /* Broadcom BCM20702B0 (Dynex/Insignia) */ 125 { USB_DEVICE(0x19ff, 0x0239), .driver_info = BTUSB_BCM_PATCHRAM }, 126 127 /* Broadcom BCM43142A0 (Foxconn/Lenovo) */ 128 { USB_VENDOR_AND_INTERFACE_INFO(0x105b, 0xff, 0x01, 0x01), 129 .driver_info = BTUSB_BCM_PATCHRAM }, 130 131 /* Broadcom BCM920703 (HTC Vive) */ 132 { USB_VENDOR_AND_INTERFACE_INFO(0x0bb4, 0xff, 0x01, 0x01), 133 .driver_info = BTUSB_BCM_PATCHRAM }, 134 135 /* Foxconn - Hon Hai */ 136 { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01), 137 .driver_info = BTUSB_BCM_PATCHRAM }, 138 139 /* Lite-On Technology - Broadcom based */ 140 { USB_VENDOR_AND_INTERFACE_INFO(0x04ca, 0xff, 0x01, 0x01), 141 .driver_info = BTUSB_BCM_PATCHRAM }, 142 143 /* Broadcom devices with vendor specific id */ 144 { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01), 145 .driver_info = BTUSB_BCM_PATCHRAM }, 146 147 /* ASUSTek Computer - Broadcom based */ 148 { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01), 149 .driver_info = BTUSB_BCM_PATCHRAM }, 150 151 /* Belkin F8065bf - Broadcom based */ 152 { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01), 153 .driver_info = BTUSB_BCM_PATCHRAM }, 154 155 /* IMC Networks - Broadcom based */ 156 { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01), 157 .driver_info = BTUSB_BCM_PATCHRAM }, 158 159 /* Dell Computer - Broadcom based */ 160 { USB_VENDOR_AND_INTERFACE_INFO(0x413c, 0xff, 0x01, 0x01), 161 .driver_info = BTUSB_BCM_PATCHRAM }, 162 163 /* Toshiba Corp - Broadcom based */ 164 { USB_VENDOR_AND_INTERFACE_INFO(0x0930, 0xff, 0x01, 0x01), 165 .driver_info = BTUSB_BCM_PATCHRAM }, 166 167 /* Intel Bluetooth USB Bootloader (RAM module) */ 168 { USB_DEVICE(0x8087, 0x0a5a), 169 .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC }, 170 171 { } /* Terminating entry */ 172 }; 173 174 MODULE_DEVICE_TABLE(usb, btusb_table); 175 176 static const struct usb_device_id blacklist_table[] = { 177 /* CSR BlueCore devices */ 178 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR }, 179 180 /* Broadcom BCM2033 without firmware */ 181 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE }, 182 183 /* Broadcom BCM2045 devices */ 184 { USB_DEVICE(0x0a5c, 0x2045), .driver_info = BTUSB_BCM2045 }, 185 186 /* Atheros 3011 with sflash firmware */ 187 { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE }, 188 { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE }, 189 { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE }, 190 { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE }, 191 { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE }, 192 { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE }, 193 { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE }, 194 195 /* Atheros AR9285 Malbec with sflash firmware */ 196 { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE }, 197 198 /* Atheros 3012 with sflash firmware */ 199 { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 }, 200 { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 }, 201 { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 }, 202 { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 }, 203 { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 }, 204 { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 }, 205 { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 }, 206 { USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 }, 207 { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 }, 208 { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 }, 209 { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 }, 210 { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 }, 211 { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 }, 212 { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 }, 213 { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 }, 214 { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 }, 215 { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 }, 216 { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 }, 217 { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 }, 218 { USB_DEVICE(0x04ca, 0x3018), .driver_info = BTUSB_ATH3012 }, 219 { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 }, 220 { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 }, 221 { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 }, 222 { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 }, 223 { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 }, 224 { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 }, 225 { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 }, 226 { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 }, 227 { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 }, 228 { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 }, 229 { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 }, 230 { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 }, 231 { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 }, 232 { USB_DEVICE(0x0cf3, 0x817b), .driver_info = BTUSB_ATH3012 }, 233 { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 }, 234 { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 }, 235 { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 }, 236 { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 }, 237 { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 }, 238 { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 }, 239 { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 }, 240 { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 }, 241 { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 }, 242 { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 }, 243 { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 }, 244 { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 }, 245 { USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 }, 246 { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 }, 247 { USB_DEVICE(0x13d3, 0x3487), .driver_info = BTUSB_ATH3012 }, 248 { USB_DEVICE(0x13d3, 0x3490), .driver_info = BTUSB_ATH3012 }, 249 250 /* Atheros AR5BBU12 with sflash firmware */ 251 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE }, 252 253 /* Atheros AR5BBU12 with sflash firmware */ 254 { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 }, 255 { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 }, 256 257 /* QCA ROME chipset */ 258 { USB_DEVICE(0x0cf3, 0x535b), .driver_info = BTUSB_QCA_ROME | 259 BTUSB_WIDEBAND_SPEECH }, 260 { USB_DEVICE(0x0cf3, 0xe007), .driver_info = BTUSB_QCA_ROME | 261 BTUSB_WIDEBAND_SPEECH }, 262 { USB_DEVICE(0x0cf3, 0xe009), .driver_info = BTUSB_QCA_ROME | 263 BTUSB_WIDEBAND_SPEECH }, 264 { USB_DEVICE(0x0cf3, 0xe010), .driver_info = BTUSB_QCA_ROME | 265 BTUSB_WIDEBAND_SPEECH }, 266 { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME | 267 BTUSB_WIDEBAND_SPEECH }, 268 { USB_DEVICE(0x0cf3, 0xe301), .driver_info = BTUSB_QCA_ROME | 269 BTUSB_WIDEBAND_SPEECH }, 270 { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME | 271 BTUSB_WIDEBAND_SPEECH }, 272 { USB_DEVICE(0x0cf3, 0xe500), .driver_info = BTUSB_QCA_ROME | 273 BTUSB_WIDEBAND_SPEECH }, 274 { USB_DEVICE(0x0489, 0xe092), .driver_info = BTUSB_QCA_ROME | 275 BTUSB_WIDEBAND_SPEECH }, 276 { USB_DEVICE(0x0489, 0xe09f), .driver_info = BTUSB_QCA_ROME | 277 BTUSB_WIDEBAND_SPEECH }, 278 { USB_DEVICE(0x0489, 0xe0a2), .driver_info = BTUSB_QCA_ROME | 279 BTUSB_WIDEBAND_SPEECH }, 280 { USB_DEVICE(0x04ca, 0x3011), .driver_info = BTUSB_QCA_ROME | 281 BTUSB_WIDEBAND_SPEECH }, 282 { USB_DEVICE(0x04ca, 0x3015), .driver_info = BTUSB_QCA_ROME | 283 BTUSB_WIDEBAND_SPEECH }, 284 { USB_DEVICE(0x04ca, 0x3016), .driver_info = BTUSB_QCA_ROME | 285 BTUSB_WIDEBAND_SPEECH }, 286 { USB_DEVICE(0x04ca, 0x301a), .driver_info = BTUSB_QCA_ROME | 287 BTUSB_WIDEBAND_SPEECH }, 288 { USB_DEVICE(0x04ca, 0x3021), .driver_info = BTUSB_QCA_ROME | 289 BTUSB_WIDEBAND_SPEECH }, 290 { USB_DEVICE(0x13d3, 0x3491), .driver_info = BTUSB_QCA_ROME | 291 BTUSB_WIDEBAND_SPEECH }, 292 { USB_DEVICE(0x13d3, 0x3496), .driver_info = BTUSB_QCA_ROME | 293 BTUSB_WIDEBAND_SPEECH }, 294 { USB_DEVICE(0x13d3, 0x3501), .driver_info = BTUSB_QCA_ROME | 295 BTUSB_WIDEBAND_SPEECH }, 296 297 /* QCA WCN6855 chipset */ 298 { USB_DEVICE(0x0cf3, 0xe600), .driver_info = BTUSB_QCA_WCN6855 | 299 BTUSB_WIDEBAND_SPEECH | 300 BTUSB_VALID_LE_STATES }, 301 { USB_DEVICE(0x0489, 0xe0cc), .driver_info = BTUSB_QCA_WCN6855 | 302 BTUSB_WIDEBAND_SPEECH | 303 BTUSB_VALID_LE_STATES }, 304 { USB_DEVICE(0x0489, 0xe0d6), .driver_info = BTUSB_QCA_WCN6855 | 305 BTUSB_WIDEBAND_SPEECH | 306 BTUSB_VALID_LE_STATES }, 307 { USB_DEVICE(0x0489, 0xe0e3), .driver_info = BTUSB_QCA_WCN6855 | 308 BTUSB_WIDEBAND_SPEECH | 309 BTUSB_VALID_LE_STATES }, 310 { USB_DEVICE(0x10ab, 0x9309), .driver_info = BTUSB_QCA_WCN6855 | 311 BTUSB_WIDEBAND_SPEECH | 312 BTUSB_VALID_LE_STATES }, 313 { USB_DEVICE(0x10ab, 0x9409), .driver_info = BTUSB_QCA_WCN6855 | 314 BTUSB_WIDEBAND_SPEECH | 315 BTUSB_VALID_LE_STATES }, 316 { USB_DEVICE(0x0489, 0xe0d0), .driver_info = BTUSB_QCA_WCN6855 | 317 BTUSB_WIDEBAND_SPEECH | 318 BTUSB_VALID_LE_STATES }, 319 320 /* QCA WCN785x chipset */ 321 { USB_DEVICE(0x0cf3, 0xe700), .driver_info = BTUSB_QCA_WCN6855 | 322 BTUSB_WIDEBAND_SPEECH | 323 BTUSB_VALID_LE_STATES }, 324 325 /* Broadcom BCM2035 */ 326 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 }, 327 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU }, 328 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU }, 329 330 /* Broadcom BCM2045 */ 331 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU }, 332 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU }, 333 334 /* IBM/Lenovo ThinkPad with Broadcom chip */ 335 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU }, 336 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU }, 337 338 /* HP laptop with Broadcom chip */ 339 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU }, 340 341 /* Dell laptop with Broadcom chip */ 342 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU }, 343 344 /* Dell Wireless 370 and 410 devices */ 345 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU }, 346 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU }, 347 348 /* Belkin F8T012 and F8T013 devices */ 349 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU }, 350 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU }, 351 352 /* Asus WL-BTD202 device */ 353 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU }, 354 355 /* Kensington Bluetooth USB adapter */ 356 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU }, 357 358 /* RTX Telecom based adapters with buggy SCO support */ 359 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC }, 360 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC }, 361 362 /* CONWISE Technology based adapters with buggy SCO support */ 363 { USB_DEVICE(0x0e5e, 0x6622), 364 .driver_info = BTUSB_BROKEN_ISOC | BTUSB_CW6622}, 365 366 /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */ 367 { USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE }, 368 369 /* Digianswer devices */ 370 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER }, 371 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE }, 372 373 /* CSR BlueCore Bluetooth Sniffer */ 374 { USB_DEVICE(0x0a12, 0x0002), 375 .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC }, 376 377 /* Frontline ComProbe Bluetooth Sniffer */ 378 { USB_DEVICE(0x16d3, 0x0002), 379 .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC }, 380 381 /* Marvell Bluetooth devices */ 382 { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL }, 383 { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL }, 384 { USB_DEVICE(0x1286, 0x204e), .driver_info = BTUSB_MARVELL }, 385 386 /* Intel Bluetooth devices */ 387 { USB_DEVICE(0x8087, 0x0025), .driver_info = BTUSB_INTEL_COMBINED }, 388 { USB_DEVICE(0x8087, 0x0026), .driver_info = BTUSB_INTEL_COMBINED }, 389 { USB_DEVICE(0x8087, 0x0029), .driver_info = BTUSB_INTEL_COMBINED }, 390 { USB_DEVICE(0x8087, 0x0032), .driver_info = BTUSB_INTEL_COMBINED }, 391 { USB_DEVICE(0x8087, 0x0033), .driver_info = BTUSB_INTEL_COMBINED }, 392 { USB_DEVICE(0x8087, 0x0035), .driver_info = BTUSB_INTEL_COMBINED }, 393 { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR }, 394 { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL_COMBINED | 395 BTUSB_INTEL_NO_WBS_SUPPORT | 396 BTUSB_INTEL_BROKEN_INITIAL_NCMD | 397 BTUSB_INTEL_BROKEN_SHUTDOWN_LED }, 398 { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL_COMBINED | 399 BTUSB_INTEL_NO_WBS_SUPPORT | 400 BTUSB_INTEL_BROKEN_SHUTDOWN_LED }, 401 { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_COMBINED }, 402 { USB_DEVICE(0x8087, 0x0aa7), .driver_info = BTUSB_INTEL_COMBINED | 403 BTUSB_INTEL_BROKEN_SHUTDOWN_LED }, 404 { USB_DEVICE(0x8087, 0x0aaa), .driver_info = BTUSB_INTEL_COMBINED }, 405 406 /* Other Intel Bluetooth devices */ 407 { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01), 408 .driver_info = BTUSB_IGNORE }, 409 410 /* Realtek 8822CE Bluetooth devices */ 411 { USB_DEVICE(0x0bda, 0xb00c), .driver_info = BTUSB_REALTEK | 412 BTUSB_WIDEBAND_SPEECH }, 413 { USB_DEVICE(0x0bda, 0xc822), .driver_info = BTUSB_REALTEK | 414 BTUSB_WIDEBAND_SPEECH }, 415 416 /* Realtek 8852AE Bluetooth devices */ 417 { USB_DEVICE(0x0bda, 0x2852), .driver_info = BTUSB_REALTEK | 418 BTUSB_WIDEBAND_SPEECH }, 419 { USB_DEVICE(0x0bda, 0xc852), .driver_info = BTUSB_REALTEK | 420 BTUSB_WIDEBAND_SPEECH }, 421 { USB_DEVICE(0x0bda, 0x385a), .driver_info = BTUSB_REALTEK | 422 BTUSB_WIDEBAND_SPEECH }, 423 { USB_DEVICE(0x0bda, 0x4852), .driver_info = BTUSB_REALTEK | 424 BTUSB_WIDEBAND_SPEECH }, 425 { USB_DEVICE(0x04c5, 0x165c), .driver_info = BTUSB_REALTEK | 426 BTUSB_WIDEBAND_SPEECH }, 427 { USB_DEVICE(0x04ca, 0x4006), .driver_info = BTUSB_REALTEK | 428 BTUSB_WIDEBAND_SPEECH }, 429 { USB_DEVICE(0x0cb8, 0xc549), .driver_info = BTUSB_REALTEK | 430 BTUSB_WIDEBAND_SPEECH }, 431 432 /* Realtek 8852CE Bluetooth devices */ 433 { USB_DEVICE(0x04ca, 0x4007), .driver_info = BTUSB_REALTEK | 434 BTUSB_WIDEBAND_SPEECH }, 435 { USB_DEVICE(0x04c5, 0x1675), .driver_info = BTUSB_REALTEK | 436 BTUSB_WIDEBAND_SPEECH }, 437 { USB_DEVICE(0x0cb8, 0xc558), .driver_info = BTUSB_REALTEK | 438 BTUSB_WIDEBAND_SPEECH }, 439 { USB_DEVICE(0x13d3, 0x3587), .driver_info = BTUSB_REALTEK | 440 BTUSB_WIDEBAND_SPEECH }, 441 { USB_DEVICE(0x13d3, 0x3586), .driver_info = BTUSB_REALTEK | 442 BTUSB_WIDEBAND_SPEECH }, 443 { USB_DEVICE(0x13d3, 0x3592), .driver_info = BTUSB_REALTEK | 444 BTUSB_WIDEBAND_SPEECH }, 445 446 /* Realtek Bluetooth devices */ 447 { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01), 448 .driver_info = BTUSB_REALTEK }, 449 450 /* MediaTek Bluetooth devices */ 451 { USB_VENDOR_AND_INTERFACE_INFO(0x0e8d, 0xe0, 0x01, 0x01), 452 .driver_info = BTUSB_MEDIATEK | 453 BTUSB_WIDEBAND_SPEECH | 454 BTUSB_VALID_LE_STATES }, 455 456 /* Additional MediaTek MT7615E Bluetooth devices */ 457 { USB_DEVICE(0x13d3, 0x3560), .driver_info = BTUSB_MEDIATEK}, 458 459 /* Additional MediaTek MT7663 Bluetooth devices */ 460 { USB_DEVICE(0x043e, 0x310c), .driver_info = BTUSB_MEDIATEK | 461 BTUSB_WIDEBAND_SPEECH | 462 BTUSB_VALID_LE_STATES }, 463 464 /* Additional MediaTek MT7668 Bluetooth devices */ 465 { USB_DEVICE(0x043e, 0x3109), .driver_info = BTUSB_MEDIATEK | 466 BTUSB_WIDEBAND_SPEECH | 467 BTUSB_VALID_LE_STATES }, 468 469 /* Additional MediaTek MT7921 Bluetooth devices */ 470 { USB_DEVICE(0x0489, 0xe0c8), .driver_info = BTUSB_MEDIATEK | 471 BTUSB_WIDEBAND_SPEECH | 472 BTUSB_VALID_LE_STATES }, 473 { USB_DEVICE(0x0489, 0xe0e0), .driver_info = BTUSB_MEDIATEK | 474 BTUSB_WIDEBAND_SPEECH | 475 BTUSB_VALID_LE_STATES }, 476 { USB_DEVICE(0x04ca, 0x3802), .driver_info = BTUSB_MEDIATEK | 477 BTUSB_WIDEBAND_SPEECH | 478 BTUSB_VALID_LE_STATES }, 479 { USB_DEVICE(0x13d3, 0x3563), .driver_info = BTUSB_MEDIATEK | 480 BTUSB_WIDEBAND_SPEECH | 481 BTUSB_VALID_LE_STATES }, 482 { USB_DEVICE(0x13d3, 0x3564), .driver_info = BTUSB_MEDIATEK | 483 BTUSB_WIDEBAND_SPEECH | 484 BTUSB_VALID_LE_STATES }, 485 { USB_DEVICE(0x13d3, 0x3567), .driver_info = BTUSB_MEDIATEK | 486 BTUSB_WIDEBAND_SPEECH | 487 BTUSB_VALID_LE_STATES }, 488 { USB_DEVICE(0x13d3, 0x3578), .driver_info = BTUSB_MEDIATEK | 489 BTUSB_WIDEBAND_SPEECH | 490 BTUSB_VALID_LE_STATES }, 491 { USB_DEVICE(0x13d3, 0x3583), .driver_info = BTUSB_MEDIATEK | 492 BTUSB_WIDEBAND_SPEECH | 493 BTUSB_VALID_LE_STATES }, 494 { USB_DEVICE(0x0489, 0xe0cd), .driver_info = BTUSB_MEDIATEK | 495 BTUSB_WIDEBAND_SPEECH | 496 BTUSB_VALID_LE_STATES }, 497 { USB_DEVICE(0x0e8d, 0x0608), .driver_info = BTUSB_MEDIATEK | 498 BTUSB_WIDEBAND_SPEECH | 499 BTUSB_VALID_LE_STATES }, 500 501 /* MediaTek MT7922A Bluetooth devices */ 502 { USB_DEVICE(0x0489, 0xe0d8), .driver_info = BTUSB_MEDIATEK | 503 BTUSB_WIDEBAND_SPEECH | 504 BTUSB_VALID_LE_STATES }, 505 { USB_DEVICE(0x0489, 0xe0d9), .driver_info = BTUSB_MEDIATEK | 506 BTUSB_WIDEBAND_SPEECH | 507 BTUSB_VALID_LE_STATES }, 508 { USB_DEVICE(0x13d3, 0x3568), .driver_info = BTUSB_MEDIATEK | 509 BTUSB_WIDEBAND_SPEECH | 510 BTUSB_VALID_LE_STATES }, 511 { USB_DEVICE(0x0489, 0xe0e2), .driver_info = BTUSB_MEDIATEK | 512 BTUSB_WIDEBAND_SPEECH | 513 BTUSB_VALID_LE_STATES }, 514 515 /* Additional Realtek 8723AE Bluetooth devices */ 516 { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK }, 517 { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK }, 518 519 /* Additional Realtek 8723BE Bluetooth devices */ 520 { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK }, 521 { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK }, 522 { USB_DEVICE(0x04f2, 0xb49f), .driver_info = BTUSB_REALTEK }, 523 { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK }, 524 { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK }, 525 { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK }, 526 { USB_DEVICE(0x13d3, 0x3494), .driver_info = BTUSB_REALTEK }, 527 528 /* Additional Realtek 8723BU Bluetooth devices */ 529 { USB_DEVICE(0x7392, 0xa611), .driver_info = BTUSB_REALTEK }, 530 531 /* Additional Realtek 8723DE Bluetooth devices */ 532 { USB_DEVICE(0x0bda, 0xb009), .driver_info = BTUSB_REALTEK }, 533 { USB_DEVICE(0x2ff8, 0xb011), .driver_info = BTUSB_REALTEK }, 534 535 /* Additional Realtek 8761BUV Bluetooth devices */ 536 { USB_DEVICE(0x2357, 0x0604), .driver_info = BTUSB_REALTEK | 537 BTUSB_WIDEBAND_SPEECH }, 538 { USB_DEVICE(0x0b05, 0x190e), .driver_info = BTUSB_REALTEK | 539 BTUSB_WIDEBAND_SPEECH }, 540 { USB_DEVICE(0x2550, 0x8761), .driver_info = BTUSB_REALTEK | 541 BTUSB_WIDEBAND_SPEECH }, 542 { USB_DEVICE(0x0bda, 0x8771), .driver_info = BTUSB_REALTEK | 543 BTUSB_WIDEBAND_SPEECH }, 544 { USB_DEVICE(0x7392, 0xc611), .driver_info = BTUSB_REALTEK | 545 BTUSB_WIDEBAND_SPEECH }, 546 547 /* Additional Realtek 8821AE Bluetooth devices */ 548 { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK }, 549 { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK }, 550 { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK }, 551 { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK }, 552 { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK }, 553 554 /* Additional Realtek 8822BE Bluetooth devices */ 555 { USB_DEVICE(0x13d3, 0x3526), .driver_info = BTUSB_REALTEK }, 556 { USB_DEVICE(0x0b05, 0x185c), .driver_info = BTUSB_REALTEK }, 557 558 /* Additional Realtek 8822CE Bluetooth devices */ 559 { USB_DEVICE(0x04ca, 0x4005), .driver_info = BTUSB_REALTEK | 560 BTUSB_WIDEBAND_SPEECH }, 561 { USB_DEVICE(0x04c5, 0x161f), .driver_info = BTUSB_REALTEK | 562 BTUSB_WIDEBAND_SPEECH }, 563 { USB_DEVICE(0x0b05, 0x18ef), .driver_info = BTUSB_REALTEK | 564 BTUSB_WIDEBAND_SPEECH }, 565 { USB_DEVICE(0x13d3, 0x3548), .driver_info = BTUSB_REALTEK | 566 BTUSB_WIDEBAND_SPEECH }, 567 { USB_DEVICE(0x13d3, 0x3549), .driver_info = BTUSB_REALTEK | 568 BTUSB_WIDEBAND_SPEECH }, 569 { USB_DEVICE(0x13d3, 0x3553), .driver_info = BTUSB_REALTEK | 570 BTUSB_WIDEBAND_SPEECH }, 571 { USB_DEVICE(0x13d3, 0x3555), .driver_info = BTUSB_REALTEK | 572 BTUSB_WIDEBAND_SPEECH }, 573 { USB_DEVICE(0x2ff8, 0x3051), .driver_info = BTUSB_REALTEK | 574 BTUSB_WIDEBAND_SPEECH }, 575 { USB_DEVICE(0x1358, 0xc123), .driver_info = BTUSB_REALTEK | 576 BTUSB_WIDEBAND_SPEECH }, 577 { USB_DEVICE(0x0bda, 0xc123), .driver_info = BTUSB_REALTEK | 578 BTUSB_WIDEBAND_SPEECH }, 579 { USB_DEVICE(0x0cb5, 0xc547), .driver_info = BTUSB_REALTEK | 580 BTUSB_WIDEBAND_SPEECH }, 581 582 /* Silicon Wave based devices */ 583 { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE }, 584 585 { } /* Terminating entry */ 586 }; 587 588 /* The Bluetooth USB module build into some devices needs to be reset on resume, 589 * this is a problem with the platform (likely shutting off all power) not with 590 * the module itself. So we use a DMI list to match known broken platforms. 591 */ 592 static const struct dmi_system_id btusb_needs_reset_resume_table[] = { 593 { 594 /* Dell OptiPlex 3060 (QCA ROME device 0cf3:e007) */ 595 .matches = { 596 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 597 DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 3060"), 598 }, 599 }, 600 { 601 /* Dell XPS 9360 (QCA ROME device 0cf3:e300) */ 602 .matches = { 603 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 604 DMI_MATCH(DMI_PRODUCT_NAME, "XPS 13 9360"), 605 }, 606 }, 607 { 608 /* Dell Inspiron 5565 (QCA ROME device 0cf3:e009) */ 609 .matches = { 610 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 611 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5565"), 612 }, 613 }, 614 {} 615 }; 616 617 #define BTUSB_MAX_ISOC_FRAMES 10 618 619 #define BTUSB_INTR_RUNNING 0 620 #define BTUSB_BULK_RUNNING 1 621 #define BTUSB_ISOC_RUNNING 2 622 #define BTUSB_SUSPENDING 3 623 #define BTUSB_DID_ISO_RESUME 4 624 #define BTUSB_BOOTLOADER 5 625 #define BTUSB_DOWNLOADING 6 626 #define BTUSB_FIRMWARE_LOADED 7 627 #define BTUSB_FIRMWARE_FAILED 8 628 #define BTUSB_BOOTING 9 629 #define BTUSB_DIAG_RUNNING 10 630 #define BTUSB_OOB_WAKE_ENABLED 11 631 #define BTUSB_HW_RESET_ACTIVE 12 632 #define BTUSB_TX_WAIT_VND_EVT 13 633 #define BTUSB_WAKEUP_AUTOSUSPEND 14 634 #define BTUSB_USE_ALT3_FOR_WBS 15 635 636 struct btusb_data { 637 struct hci_dev *hdev; 638 struct usb_device *udev; 639 struct usb_interface *intf; 640 struct usb_interface *isoc; 641 struct usb_interface *diag; 642 unsigned isoc_ifnum; 643 644 unsigned long flags; 645 646 bool poll_sync; 647 int intr_interval; 648 struct work_struct work; 649 struct work_struct waker; 650 struct delayed_work rx_work; 651 652 struct sk_buff_head acl_q; 653 654 struct usb_anchor deferred; 655 struct usb_anchor tx_anchor; 656 int tx_in_flight; 657 spinlock_t txlock; 658 659 struct usb_anchor intr_anchor; 660 struct usb_anchor bulk_anchor; 661 struct usb_anchor isoc_anchor; 662 struct usb_anchor diag_anchor; 663 struct usb_anchor ctrl_anchor; 664 spinlock_t rxlock; 665 666 struct sk_buff *evt_skb; 667 struct sk_buff *acl_skb; 668 struct sk_buff *sco_skb; 669 670 struct usb_endpoint_descriptor *intr_ep; 671 struct usb_endpoint_descriptor *bulk_tx_ep; 672 struct usb_endpoint_descriptor *bulk_rx_ep; 673 struct usb_endpoint_descriptor *isoc_tx_ep; 674 struct usb_endpoint_descriptor *isoc_rx_ep; 675 struct usb_endpoint_descriptor *diag_tx_ep; 676 struct usb_endpoint_descriptor *diag_rx_ep; 677 678 struct gpio_desc *reset_gpio; 679 680 __u8 cmdreq_type; 681 __u8 cmdreq; 682 683 unsigned int sco_num; 684 unsigned int air_mode; 685 bool usb_alt6_packet_flow; 686 int isoc_altsetting; 687 int suspend_count; 688 689 int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb); 690 int (*recv_acl)(struct hci_dev *hdev, struct sk_buff *skb); 691 int (*recv_bulk)(struct btusb_data *data, void *buffer, int count); 692 693 int (*setup_on_usb)(struct hci_dev *hdev); 694 695 int oob_wake_irq; /* irq for out-of-band wake-on-bt */ 696 unsigned cmd_timeout_cnt; 697 }; 698 699 static void btusb_intel_cmd_timeout(struct hci_dev *hdev) 700 { 701 struct btusb_data *data = hci_get_drvdata(hdev); 702 struct gpio_desc *reset_gpio = data->reset_gpio; 703 704 if (++data->cmd_timeout_cnt < 5) 705 return; 706 707 if (!reset_gpio) { 708 bt_dev_err(hdev, "No way to reset. Ignoring and continuing"); 709 return; 710 } 711 712 /* 713 * Toggle the hard reset line if the platform provides one. The reset 714 * is going to yank the device off the USB and then replug. So doing 715 * once is enough. The cleanup is handled correctly on the way out 716 * (standard USB disconnect), and the new device is detected cleanly 717 * and bound to the driver again like it should be. 718 */ 719 if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) { 720 bt_dev_err(hdev, "last reset failed? Not resetting again"); 721 return; 722 } 723 724 bt_dev_err(hdev, "Initiating HW reset via gpio"); 725 gpiod_set_value_cansleep(reset_gpio, 1); 726 msleep(100); 727 gpiod_set_value_cansleep(reset_gpio, 0); 728 } 729 730 static void btusb_rtl_cmd_timeout(struct hci_dev *hdev) 731 { 732 struct btusb_data *data = hci_get_drvdata(hdev); 733 struct gpio_desc *reset_gpio = data->reset_gpio; 734 735 if (++data->cmd_timeout_cnt < 5) 736 return; 737 738 if (!reset_gpio) { 739 bt_dev_err(hdev, "No gpio to reset Realtek device, ignoring"); 740 return; 741 } 742 743 /* Toggle the hard reset line. The Realtek device is going to 744 * yank itself off the USB and then replug. The cleanup is handled 745 * correctly on the way out (standard USB disconnect), and the new 746 * device is detected cleanly and bound to the driver again like 747 * it should be. 748 */ 749 if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) { 750 bt_dev_err(hdev, "last reset failed? Not resetting again"); 751 return; 752 } 753 754 bt_dev_err(hdev, "Reset Realtek device via gpio"); 755 gpiod_set_value_cansleep(reset_gpio, 1); 756 msleep(200); 757 gpiod_set_value_cansleep(reset_gpio, 0); 758 } 759 760 static void btusb_qca_cmd_timeout(struct hci_dev *hdev) 761 { 762 struct btusb_data *data = hci_get_drvdata(hdev); 763 struct gpio_desc *reset_gpio = data->reset_gpio; 764 int err; 765 766 if (++data->cmd_timeout_cnt < 5) 767 return; 768 769 if (reset_gpio) { 770 bt_dev_err(hdev, "Reset qca device via bt_en gpio"); 771 772 /* Toggle the hard reset line. The qca bt device is going to 773 * yank itself off the USB and then replug. The cleanup is handled 774 * correctly on the way out (standard USB disconnect), and the new 775 * device is detected cleanly and bound to the driver again like 776 * it should be. 777 */ 778 if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) { 779 bt_dev_err(hdev, "last reset failed? Not resetting again"); 780 return; 781 } 782 783 gpiod_set_value_cansleep(reset_gpio, 0); 784 msleep(200); 785 gpiod_set_value_cansleep(reset_gpio, 1); 786 787 return; 788 } 789 790 bt_dev_err(hdev, "Multiple cmd timeouts seen. Resetting usb device."); 791 /* This is not an unbalanced PM reference since the device will reset */ 792 err = usb_autopm_get_interface(data->intf); 793 if (!err) 794 usb_queue_reset_device(data->intf); 795 else 796 bt_dev_err(hdev, "Failed usb_autopm_get_interface with %d", err); 797 } 798 799 static inline void btusb_free_frags(struct btusb_data *data) 800 { 801 unsigned long flags; 802 803 spin_lock_irqsave(&data->rxlock, flags); 804 805 kfree_skb(data->evt_skb); 806 data->evt_skb = NULL; 807 808 kfree_skb(data->acl_skb); 809 data->acl_skb = NULL; 810 811 kfree_skb(data->sco_skb); 812 data->sco_skb = NULL; 813 814 spin_unlock_irqrestore(&data->rxlock, flags); 815 } 816 817 static int btusb_recv_event(struct btusb_data *data, struct sk_buff *skb) 818 { 819 if (data->intr_interval) { 820 /* Trigger dequeue immediatelly if an event is received */ 821 schedule_delayed_work(&data->rx_work, 0); 822 } 823 824 return data->recv_event(data->hdev, skb); 825 } 826 827 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count) 828 { 829 struct sk_buff *skb; 830 unsigned long flags; 831 int err = 0; 832 833 spin_lock_irqsave(&data->rxlock, flags); 834 skb = data->evt_skb; 835 836 while (count) { 837 int len; 838 839 if (!skb) { 840 skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC); 841 if (!skb) { 842 err = -ENOMEM; 843 break; 844 } 845 846 hci_skb_pkt_type(skb) = HCI_EVENT_PKT; 847 hci_skb_expect(skb) = HCI_EVENT_HDR_SIZE; 848 } 849 850 len = min_t(uint, hci_skb_expect(skb), count); 851 skb_put_data(skb, buffer, len); 852 853 count -= len; 854 buffer += len; 855 hci_skb_expect(skb) -= len; 856 857 if (skb->len == HCI_EVENT_HDR_SIZE) { 858 /* Complete event header */ 859 hci_skb_expect(skb) = hci_event_hdr(skb)->plen; 860 861 if (skb_tailroom(skb) < hci_skb_expect(skb)) { 862 kfree_skb(skb); 863 skb = NULL; 864 865 err = -EILSEQ; 866 break; 867 } 868 } 869 870 if (!hci_skb_expect(skb)) { 871 /* Complete frame */ 872 btusb_recv_event(data, skb); 873 skb = NULL; 874 } 875 } 876 877 data->evt_skb = skb; 878 spin_unlock_irqrestore(&data->rxlock, flags); 879 880 return err; 881 } 882 883 static int btusb_recv_acl(struct btusb_data *data, struct sk_buff *skb) 884 { 885 /* Only queue ACL packet if intr_interval is set as it means 886 * force_poll_sync has been enabled. 887 */ 888 if (!data->intr_interval) 889 return data->recv_acl(data->hdev, skb); 890 891 skb_queue_tail(&data->acl_q, skb); 892 schedule_delayed_work(&data->rx_work, data->intr_interval); 893 894 return 0; 895 } 896 897 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count) 898 { 899 struct sk_buff *skb; 900 unsigned long flags; 901 int err = 0; 902 903 spin_lock_irqsave(&data->rxlock, flags); 904 skb = data->acl_skb; 905 906 while (count) { 907 int len; 908 909 if (!skb) { 910 skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC); 911 if (!skb) { 912 err = -ENOMEM; 913 break; 914 } 915 916 hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT; 917 hci_skb_expect(skb) = HCI_ACL_HDR_SIZE; 918 } 919 920 len = min_t(uint, hci_skb_expect(skb), count); 921 skb_put_data(skb, buffer, len); 922 923 count -= len; 924 buffer += len; 925 hci_skb_expect(skb) -= len; 926 927 if (skb->len == HCI_ACL_HDR_SIZE) { 928 __u16 handle = __le16_to_cpu(hci_acl_hdr(skb)->handle); 929 __le16 dlen = hci_acl_hdr(skb)->dlen; 930 __u8 type; 931 932 /* Complete ACL header */ 933 hci_skb_expect(skb) = __le16_to_cpu(dlen); 934 935 /* Detect if ISO packet has been sent over bulk */ 936 if (hci_conn_num(data->hdev, ISO_LINK)) { 937 type = hci_conn_lookup_type(data->hdev, 938 hci_handle(handle)); 939 if (type == ISO_LINK) 940 hci_skb_pkt_type(skb) = HCI_ISODATA_PKT; 941 } 942 943 if (skb_tailroom(skb) < hci_skb_expect(skb)) { 944 kfree_skb(skb); 945 skb = NULL; 946 947 err = -EILSEQ; 948 break; 949 } 950 } 951 952 if (!hci_skb_expect(skb)) { 953 /* Complete frame */ 954 btusb_recv_acl(data, skb); 955 skb = NULL; 956 } 957 } 958 959 data->acl_skb = skb; 960 spin_unlock_irqrestore(&data->rxlock, flags); 961 962 return err; 963 } 964 965 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count) 966 { 967 struct sk_buff *skb; 968 unsigned long flags; 969 int err = 0; 970 971 spin_lock_irqsave(&data->rxlock, flags); 972 skb = data->sco_skb; 973 974 while (count) { 975 int len; 976 977 if (!skb) { 978 skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC); 979 if (!skb) { 980 err = -ENOMEM; 981 break; 982 } 983 984 hci_skb_pkt_type(skb) = HCI_SCODATA_PKT; 985 hci_skb_expect(skb) = HCI_SCO_HDR_SIZE; 986 } 987 988 len = min_t(uint, hci_skb_expect(skb), count); 989 skb_put_data(skb, buffer, len); 990 991 count -= len; 992 buffer += len; 993 hci_skb_expect(skb) -= len; 994 995 if (skb->len == HCI_SCO_HDR_SIZE) { 996 /* Complete SCO header */ 997 hci_skb_expect(skb) = hci_sco_hdr(skb)->dlen; 998 999 if (skb_tailroom(skb) < hci_skb_expect(skb)) { 1000 kfree_skb(skb); 1001 skb = NULL; 1002 1003 err = -EILSEQ; 1004 break; 1005 } 1006 } 1007 1008 if (!hci_skb_expect(skb)) { 1009 /* Complete frame */ 1010 hci_recv_frame(data->hdev, skb); 1011 skb = NULL; 1012 } 1013 } 1014 1015 data->sco_skb = skb; 1016 spin_unlock_irqrestore(&data->rxlock, flags); 1017 1018 return err; 1019 } 1020 1021 static void btusb_intr_complete(struct urb *urb) 1022 { 1023 struct hci_dev *hdev = urb->context; 1024 struct btusb_data *data = hci_get_drvdata(hdev); 1025 int err; 1026 1027 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, 1028 urb->actual_length); 1029 1030 if (!test_bit(HCI_RUNNING, &hdev->flags)) 1031 return; 1032 1033 if (urb->status == 0) { 1034 hdev->stat.byte_rx += urb->actual_length; 1035 1036 if (btusb_recv_intr(data, urb->transfer_buffer, 1037 urb->actual_length) < 0) { 1038 bt_dev_err(hdev, "corrupted event packet"); 1039 hdev->stat.err_rx++; 1040 } 1041 } else if (urb->status == -ENOENT) { 1042 /* Avoid suspend failed when usb_kill_urb */ 1043 return; 1044 } 1045 1046 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags)) 1047 return; 1048 1049 usb_mark_last_busy(data->udev); 1050 usb_anchor_urb(urb, &data->intr_anchor); 1051 1052 err = usb_submit_urb(urb, GFP_ATOMIC); 1053 if (err < 0) { 1054 /* -EPERM: urb is being killed; 1055 * -ENODEV: device got disconnected 1056 */ 1057 if (err != -EPERM && err != -ENODEV) 1058 bt_dev_err(hdev, "urb %p failed to resubmit (%d)", 1059 urb, -err); 1060 if (err != -EPERM) 1061 hci_cmd_sync_cancel(hdev, -err); 1062 usb_unanchor_urb(urb); 1063 } 1064 } 1065 1066 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags) 1067 { 1068 struct btusb_data *data = hci_get_drvdata(hdev); 1069 struct urb *urb; 1070 unsigned char *buf; 1071 unsigned int pipe; 1072 int err, size; 1073 1074 BT_DBG("%s", hdev->name); 1075 1076 if (!data->intr_ep) 1077 return -ENODEV; 1078 1079 urb = usb_alloc_urb(0, mem_flags); 1080 if (!urb) 1081 return -ENOMEM; 1082 1083 size = le16_to_cpu(data->intr_ep->wMaxPacketSize); 1084 1085 buf = kmalloc(size, mem_flags); 1086 if (!buf) { 1087 usb_free_urb(urb); 1088 return -ENOMEM; 1089 } 1090 1091 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress); 1092 1093 usb_fill_int_urb(urb, data->udev, pipe, buf, size, 1094 btusb_intr_complete, hdev, data->intr_ep->bInterval); 1095 1096 urb->transfer_flags |= URB_FREE_BUFFER; 1097 1098 usb_anchor_urb(urb, &data->intr_anchor); 1099 1100 err = usb_submit_urb(urb, mem_flags); 1101 if (err < 0) { 1102 if (err != -EPERM && err != -ENODEV) 1103 bt_dev_err(hdev, "urb %p submission failed (%d)", 1104 urb, -err); 1105 if (err != -EPERM) 1106 hci_cmd_sync_cancel(hdev, -err); 1107 usb_unanchor_urb(urb); 1108 } 1109 1110 /* Only initialize intr_interval if URB poll sync is enabled */ 1111 if (!data->poll_sync) 1112 goto done; 1113 1114 /* The units are frames (milliseconds) for full and low speed devices, 1115 * and microframes (1/8 millisecond) for highspeed and SuperSpeed 1116 * devices. 1117 * 1118 * This is done once on open/resume so it shouldn't change even if 1119 * force_poll_sync changes. 1120 */ 1121 switch (urb->dev->speed) { 1122 case USB_SPEED_SUPER_PLUS: 1123 case USB_SPEED_SUPER: /* units are 125us */ 1124 data->intr_interval = usecs_to_jiffies(urb->interval * 125); 1125 break; 1126 default: 1127 data->intr_interval = msecs_to_jiffies(urb->interval); 1128 break; 1129 } 1130 1131 done: 1132 usb_free_urb(urb); 1133 1134 return err; 1135 } 1136 1137 static void btusb_bulk_complete(struct urb *urb) 1138 { 1139 struct hci_dev *hdev = urb->context; 1140 struct btusb_data *data = hci_get_drvdata(hdev); 1141 int err; 1142 1143 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, 1144 urb->actual_length); 1145 1146 if (!test_bit(HCI_RUNNING, &hdev->flags)) 1147 return; 1148 1149 if (urb->status == 0) { 1150 hdev->stat.byte_rx += urb->actual_length; 1151 1152 if (data->recv_bulk(data, urb->transfer_buffer, 1153 urb->actual_length) < 0) { 1154 bt_dev_err(hdev, "corrupted ACL packet"); 1155 hdev->stat.err_rx++; 1156 } 1157 } else if (urb->status == -ENOENT) { 1158 /* Avoid suspend failed when usb_kill_urb */ 1159 return; 1160 } 1161 1162 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags)) 1163 return; 1164 1165 usb_anchor_urb(urb, &data->bulk_anchor); 1166 usb_mark_last_busy(data->udev); 1167 1168 err = usb_submit_urb(urb, GFP_ATOMIC); 1169 if (err < 0) { 1170 /* -EPERM: urb is being killed; 1171 * -ENODEV: device got disconnected 1172 */ 1173 if (err != -EPERM && err != -ENODEV) 1174 bt_dev_err(hdev, "urb %p failed to resubmit (%d)", 1175 urb, -err); 1176 usb_unanchor_urb(urb); 1177 } 1178 } 1179 1180 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags) 1181 { 1182 struct btusb_data *data = hci_get_drvdata(hdev); 1183 struct urb *urb; 1184 unsigned char *buf; 1185 unsigned int pipe; 1186 int err, size = HCI_MAX_FRAME_SIZE; 1187 1188 BT_DBG("%s", hdev->name); 1189 1190 if (!data->bulk_rx_ep) 1191 return -ENODEV; 1192 1193 urb = usb_alloc_urb(0, mem_flags); 1194 if (!urb) 1195 return -ENOMEM; 1196 1197 buf = kmalloc(size, mem_flags); 1198 if (!buf) { 1199 usb_free_urb(urb); 1200 return -ENOMEM; 1201 } 1202 1203 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress); 1204 1205 usb_fill_bulk_urb(urb, data->udev, pipe, buf, size, 1206 btusb_bulk_complete, hdev); 1207 1208 urb->transfer_flags |= URB_FREE_BUFFER; 1209 1210 usb_mark_last_busy(data->udev); 1211 usb_anchor_urb(urb, &data->bulk_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_isoc_complete(struct urb *urb) 1227 { 1228 struct hci_dev *hdev = urb->context; 1229 struct btusb_data *data = hci_get_drvdata(hdev); 1230 int i, err; 1231 1232 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, 1233 urb->actual_length); 1234 1235 if (!test_bit(HCI_RUNNING, &hdev->flags)) 1236 return; 1237 1238 if (urb->status == 0) { 1239 for (i = 0; i < urb->number_of_packets; i++) { 1240 unsigned int offset = urb->iso_frame_desc[i].offset; 1241 unsigned int length = urb->iso_frame_desc[i].actual_length; 1242 1243 if (urb->iso_frame_desc[i].status) 1244 continue; 1245 1246 hdev->stat.byte_rx += length; 1247 1248 if (btusb_recv_isoc(data, urb->transfer_buffer + offset, 1249 length) < 0) { 1250 bt_dev_err(hdev, "corrupted SCO packet"); 1251 hdev->stat.err_rx++; 1252 } 1253 } 1254 } else if (urb->status == -ENOENT) { 1255 /* Avoid suspend failed when usb_kill_urb */ 1256 return; 1257 } 1258 1259 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags)) 1260 return; 1261 1262 usb_anchor_urb(urb, &data->isoc_anchor); 1263 1264 err = usb_submit_urb(urb, GFP_ATOMIC); 1265 if (err < 0) { 1266 /* -EPERM: urb is being killed; 1267 * -ENODEV: device got disconnected 1268 */ 1269 if (err != -EPERM && err != -ENODEV) 1270 bt_dev_err(hdev, "urb %p failed to resubmit (%d)", 1271 urb, -err); 1272 usb_unanchor_urb(urb); 1273 } 1274 } 1275 1276 static inline void __fill_isoc_descriptor_msbc(struct urb *urb, int len, 1277 int mtu, struct btusb_data *data) 1278 { 1279 int i, offset = 0; 1280 unsigned int interval; 1281 1282 BT_DBG("len %d mtu %d", len, mtu); 1283 1284 /* For mSBC ALT 6 setting the host will send the packet at continuous 1285 * flow. As per core spec 5, vol 4, part B, table 2.1. For ALT setting 1286 * 6 the HCI PACKET INTERVAL should be 7.5ms for every usb packets. 1287 * To maintain the rate we send 63bytes of usb packets alternatively for 1288 * 7ms and 8ms to maintain the rate as 7.5ms. 1289 */ 1290 if (data->usb_alt6_packet_flow) { 1291 interval = 7; 1292 data->usb_alt6_packet_flow = false; 1293 } else { 1294 interval = 6; 1295 data->usb_alt6_packet_flow = true; 1296 } 1297 1298 for (i = 0; i < interval; i++) { 1299 urb->iso_frame_desc[i].offset = offset; 1300 urb->iso_frame_desc[i].length = offset; 1301 } 1302 1303 if (len && i < BTUSB_MAX_ISOC_FRAMES) { 1304 urb->iso_frame_desc[i].offset = offset; 1305 urb->iso_frame_desc[i].length = len; 1306 i++; 1307 } 1308 1309 urb->number_of_packets = i; 1310 } 1311 1312 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu) 1313 { 1314 int i, offset = 0; 1315 1316 BT_DBG("len %d mtu %d", len, mtu); 1317 1318 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu; 1319 i++, offset += mtu, len -= mtu) { 1320 urb->iso_frame_desc[i].offset = offset; 1321 urb->iso_frame_desc[i].length = mtu; 1322 } 1323 1324 if (len && i < BTUSB_MAX_ISOC_FRAMES) { 1325 urb->iso_frame_desc[i].offset = offset; 1326 urb->iso_frame_desc[i].length = len; 1327 i++; 1328 } 1329 1330 urb->number_of_packets = i; 1331 } 1332 1333 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags) 1334 { 1335 struct btusb_data *data = hci_get_drvdata(hdev); 1336 struct urb *urb; 1337 unsigned char *buf; 1338 unsigned int pipe; 1339 int err, size; 1340 1341 BT_DBG("%s", hdev->name); 1342 1343 if (!data->isoc_rx_ep) 1344 return -ENODEV; 1345 1346 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags); 1347 if (!urb) 1348 return -ENOMEM; 1349 1350 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) * 1351 BTUSB_MAX_ISOC_FRAMES; 1352 1353 buf = kmalloc(size, mem_flags); 1354 if (!buf) { 1355 usb_free_urb(urb); 1356 return -ENOMEM; 1357 } 1358 1359 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress); 1360 1361 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete, 1362 hdev, data->isoc_rx_ep->bInterval); 1363 1364 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP; 1365 1366 __fill_isoc_descriptor(urb, size, 1367 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize)); 1368 1369 usb_anchor_urb(urb, &data->isoc_anchor); 1370 1371 err = usb_submit_urb(urb, mem_flags); 1372 if (err < 0) { 1373 if (err != -EPERM && err != -ENODEV) 1374 bt_dev_err(hdev, "urb %p submission failed (%d)", 1375 urb, -err); 1376 usb_unanchor_urb(urb); 1377 } 1378 1379 usb_free_urb(urb); 1380 1381 return err; 1382 } 1383 1384 static void btusb_diag_complete(struct urb *urb) 1385 { 1386 struct hci_dev *hdev = urb->context; 1387 struct btusb_data *data = hci_get_drvdata(hdev); 1388 int err; 1389 1390 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, 1391 urb->actual_length); 1392 1393 if (urb->status == 0) { 1394 struct sk_buff *skb; 1395 1396 skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC); 1397 if (skb) { 1398 skb_put_data(skb, urb->transfer_buffer, 1399 urb->actual_length); 1400 hci_recv_diag(hdev, skb); 1401 } 1402 } else if (urb->status == -ENOENT) { 1403 /* Avoid suspend failed when usb_kill_urb */ 1404 return; 1405 } 1406 1407 if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags)) 1408 return; 1409 1410 usb_anchor_urb(urb, &data->diag_anchor); 1411 usb_mark_last_busy(data->udev); 1412 1413 err = usb_submit_urb(urb, GFP_ATOMIC); 1414 if (err < 0) { 1415 /* -EPERM: urb is being killed; 1416 * -ENODEV: device got disconnected 1417 */ 1418 if (err != -EPERM && err != -ENODEV) 1419 bt_dev_err(hdev, "urb %p failed to resubmit (%d)", 1420 urb, -err); 1421 usb_unanchor_urb(urb); 1422 } 1423 } 1424 1425 static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags) 1426 { 1427 struct btusb_data *data = hci_get_drvdata(hdev); 1428 struct urb *urb; 1429 unsigned char *buf; 1430 unsigned int pipe; 1431 int err, size = HCI_MAX_FRAME_SIZE; 1432 1433 BT_DBG("%s", hdev->name); 1434 1435 if (!data->diag_rx_ep) 1436 return -ENODEV; 1437 1438 urb = usb_alloc_urb(0, mem_flags); 1439 if (!urb) 1440 return -ENOMEM; 1441 1442 buf = kmalloc(size, mem_flags); 1443 if (!buf) { 1444 usb_free_urb(urb); 1445 return -ENOMEM; 1446 } 1447 1448 pipe = usb_rcvbulkpipe(data->udev, data->diag_rx_ep->bEndpointAddress); 1449 1450 usb_fill_bulk_urb(urb, data->udev, pipe, buf, size, 1451 btusb_diag_complete, hdev); 1452 1453 urb->transfer_flags |= URB_FREE_BUFFER; 1454 1455 usb_mark_last_busy(data->udev); 1456 usb_anchor_urb(urb, &data->diag_anchor); 1457 1458 err = usb_submit_urb(urb, mem_flags); 1459 if (err < 0) { 1460 if (err != -EPERM && err != -ENODEV) 1461 bt_dev_err(hdev, "urb %p submission failed (%d)", 1462 urb, -err); 1463 usb_unanchor_urb(urb); 1464 } 1465 1466 usb_free_urb(urb); 1467 1468 return err; 1469 } 1470 1471 static void btusb_tx_complete(struct urb *urb) 1472 { 1473 struct sk_buff *skb = urb->context; 1474 struct hci_dev *hdev = (struct hci_dev *)skb->dev; 1475 struct btusb_data *data = hci_get_drvdata(hdev); 1476 unsigned long flags; 1477 1478 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, 1479 urb->actual_length); 1480 1481 if (!test_bit(HCI_RUNNING, &hdev->flags)) 1482 goto done; 1483 1484 if (!urb->status) { 1485 hdev->stat.byte_tx += urb->transfer_buffer_length; 1486 } else { 1487 if (hci_skb_pkt_type(skb) == HCI_COMMAND_PKT) 1488 hci_cmd_sync_cancel(hdev, -urb->status); 1489 hdev->stat.err_tx++; 1490 } 1491 1492 done: 1493 spin_lock_irqsave(&data->txlock, flags); 1494 data->tx_in_flight--; 1495 spin_unlock_irqrestore(&data->txlock, flags); 1496 1497 kfree(urb->setup_packet); 1498 1499 kfree_skb(skb); 1500 } 1501 1502 static void btusb_isoc_tx_complete(struct urb *urb) 1503 { 1504 struct sk_buff *skb = urb->context; 1505 struct hci_dev *hdev = (struct hci_dev *)skb->dev; 1506 1507 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, 1508 urb->actual_length); 1509 1510 if (!test_bit(HCI_RUNNING, &hdev->flags)) 1511 goto done; 1512 1513 if (!urb->status) 1514 hdev->stat.byte_tx += urb->transfer_buffer_length; 1515 else 1516 hdev->stat.err_tx++; 1517 1518 done: 1519 kfree(urb->setup_packet); 1520 1521 kfree_skb(skb); 1522 } 1523 1524 static int btusb_open(struct hci_dev *hdev) 1525 { 1526 struct btusb_data *data = hci_get_drvdata(hdev); 1527 int err; 1528 1529 BT_DBG("%s", hdev->name); 1530 1531 err = usb_autopm_get_interface(data->intf); 1532 if (err < 0) 1533 return err; 1534 1535 /* Patching USB firmware files prior to starting any URBs of HCI path 1536 * It is more safe to use USB bulk channel for downloading USB patch 1537 */ 1538 if (data->setup_on_usb) { 1539 err = data->setup_on_usb(hdev); 1540 if (err < 0) 1541 goto setup_fail; 1542 } 1543 1544 data->intf->needs_remote_wakeup = 1; 1545 1546 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags)) 1547 goto done; 1548 1549 err = btusb_submit_intr_urb(hdev, GFP_KERNEL); 1550 if (err < 0) 1551 goto failed; 1552 1553 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL); 1554 if (err < 0) { 1555 usb_kill_anchored_urbs(&data->intr_anchor); 1556 goto failed; 1557 } 1558 1559 set_bit(BTUSB_BULK_RUNNING, &data->flags); 1560 btusb_submit_bulk_urb(hdev, GFP_KERNEL); 1561 1562 if (data->diag) { 1563 if (!btusb_submit_diag_urb(hdev, GFP_KERNEL)) 1564 set_bit(BTUSB_DIAG_RUNNING, &data->flags); 1565 } 1566 1567 done: 1568 usb_autopm_put_interface(data->intf); 1569 return 0; 1570 1571 failed: 1572 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 1573 setup_fail: 1574 usb_autopm_put_interface(data->intf); 1575 return err; 1576 } 1577 1578 static void btusb_stop_traffic(struct btusb_data *data) 1579 { 1580 usb_kill_anchored_urbs(&data->intr_anchor); 1581 usb_kill_anchored_urbs(&data->bulk_anchor); 1582 usb_kill_anchored_urbs(&data->isoc_anchor); 1583 usb_kill_anchored_urbs(&data->diag_anchor); 1584 usb_kill_anchored_urbs(&data->ctrl_anchor); 1585 } 1586 1587 static int btusb_close(struct hci_dev *hdev) 1588 { 1589 struct btusb_data *data = hci_get_drvdata(hdev); 1590 int err; 1591 1592 BT_DBG("%s", hdev->name); 1593 1594 cancel_delayed_work(&data->rx_work); 1595 cancel_work_sync(&data->work); 1596 cancel_work_sync(&data->waker); 1597 1598 skb_queue_purge(&data->acl_q); 1599 1600 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1601 clear_bit(BTUSB_BULK_RUNNING, &data->flags); 1602 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 1603 clear_bit(BTUSB_DIAG_RUNNING, &data->flags); 1604 1605 btusb_stop_traffic(data); 1606 btusb_free_frags(data); 1607 1608 err = usb_autopm_get_interface(data->intf); 1609 if (err < 0) 1610 goto failed; 1611 1612 data->intf->needs_remote_wakeup = 0; 1613 1614 /* Enable remote wake up for auto-suspend */ 1615 if (test_bit(BTUSB_WAKEUP_AUTOSUSPEND, &data->flags)) 1616 data->intf->needs_remote_wakeup = 1; 1617 1618 usb_autopm_put_interface(data->intf); 1619 1620 failed: 1621 usb_scuttle_anchored_urbs(&data->deferred); 1622 return 0; 1623 } 1624 1625 static int btusb_flush(struct hci_dev *hdev) 1626 { 1627 struct btusb_data *data = hci_get_drvdata(hdev); 1628 1629 BT_DBG("%s", hdev->name); 1630 1631 cancel_delayed_work(&data->rx_work); 1632 1633 skb_queue_purge(&data->acl_q); 1634 1635 usb_kill_anchored_urbs(&data->tx_anchor); 1636 btusb_free_frags(data); 1637 1638 return 0; 1639 } 1640 1641 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb) 1642 { 1643 struct btusb_data *data = hci_get_drvdata(hdev); 1644 struct usb_ctrlrequest *dr; 1645 struct urb *urb; 1646 unsigned int pipe; 1647 1648 urb = usb_alloc_urb(0, GFP_KERNEL); 1649 if (!urb) 1650 return ERR_PTR(-ENOMEM); 1651 1652 dr = kmalloc(sizeof(*dr), GFP_KERNEL); 1653 if (!dr) { 1654 usb_free_urb(urb); 1655 return ERR_PTR(-ENOMEM); 1656 } 1657 1658 dr->bRequestType = data->cmdreq_type; 1659 dr->bRequest = data->cmdreq; 1660 dr->wIndex = 0; 1661 dr->wValue = 0; 1662 dr->wLength = __cpu_to_le16(skb->len); 1663 1664 pipe = usb_sndctrlpipe(data->udev, 0x00); 1665 1666 usb_fill_control_urb(urb, data->udev, pipe, (void *)dr, 1667 skb->data, skb->len, btusb_tx_complete, skb); 1668 1669 skb->dev = (void *)hdev; 1670 1671 return urb; 1672 } 1673 1674 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb) 1675 { 1676 struct btusb_data *data = hci_get_drvdata(hdev); 1677 struct urb *urb; 1678 unsigned int pipe; 1679 1680 if (!data->bulk_tx_ep) 1681 return ERR_PTR(-ENODEV); 1682 1683 urb = usb_alloc_urb(0, GFP_KERNEL); 1684 if (!urb) 1685 return ERR_PTR(-ENOMEM); 1686 1687 pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress); 1688 1689 usb_fill_bulk_urb(urb, data->udev, pipe, 1690 skb->data, skb->len, btusb_tx_complete, skb); 1691 1692 skb->dev = (void *)hdev; 1693 1694 return urb; 1695 } 1696 1697 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb) 1698 { 1699 struct btusb_data *data = hci_get_drvdata(hdev); 1700 struct urb *urb; 1701 unsigned int pipe; 1702 1703 if (!data->isoc_tx_ep) 1704 return ERR_PTR(-ENODEV); 1705 1706 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL); 1707 if (!urb) 1708 return ERR_PTR(-ENOMEM); 1709 1710 pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress); 1711 1712 usb_fill_int_urb(urb, data->udev, pipe, 1713 skb->data, skb->len, btusb_isoc_tx_complete, 1714 skb, data->isoc_tx_ep->bInterval); 1715 1716 urb->transfer_flags = URB_ISO_ASAP; 1717 1718 if (data->isoc_altsetting == 6) 1719 __fill_isoc_descriptor_msbc(urb, skb->len, 1720 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize), 1721 data); 1722 else 1723 __fill_isoc_descriptor(urb, skb->len, 1724 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize)); 1725 skb->dev = (void *)hdev; 1726 1727 return urb; 1728 } 1729 1730 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb) 1731 { 1732 struct btusb_data *data = hci_get_drvdata(hdev); 1733 int err; 1734 1735 usb_anchor_urb(urb, &data->tx_anchor); 1736 1737 err = usb_submit_urb(urb, GFP_KERNEL); 1738 if (err < 0) { 1739 if (err != -EPERM && err != -ENODEV) 1740 bt_dev_err(hdev, "urb %p submission failed (%d)", 1741 urb, -err); 1742 kfree(urb->setup_packet); 1743 usb_unanchor_urb(urb); 1744 } else { 1745 usb_mark_last_busy(data->udev); 1746 } 1747 1748 usb_free_urb(urb); 1749 return err; 1750 } 1751 1752 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb) 1753 { 1754 struct btusb_data *data = hci_get_drvdata(hdev); 1755 unsigned long flags; 1756 bool suspending; 1757 1758 spin_lock_irqsave(&data->txlock, flags); 1759 suspending = test_bit(BTUSB_SUSPENDING, &data->flags); 1760 if (!suspending) 1761 data->tx_in_flight++; 1762 spin_unlock_irqrestore(&data->txlock, flags); 1763 1764 if (!suspending) 1765 return submit_tx_urb(hdev, urb); 1766 1767 usb_anchor_urb(urb, &data->deferred); 1768 schedule_work(&data->waker); 1769 1770 usb_free_urb(urb); 1771 return 0; 1772 } 1773 1774 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb) 1775 { 1776 struct urb *urb; 1777 1778 BT_DBG("%s", hdev->name); 1779 1780 switch (hci_skb_pkt_type(skb)) { 1781 case HCI_COMMAND_PKT: 1782 urb = alloc_ctrl_urb(hdev, skb); 1783 if (IS_ERR(urb)) 1784 return PTR_ERR(urb); 1785 1786 hdev->stat.cmd_tx++; 1787 return submit_or_queue_tx_urb(hdev, urb); 1788 1789 case HCI_ACLDATA_PKT: 1790 urb = alloc_bulk_urb(hdev, skb); 1791 if (IS_ERR(urb)) 1792 return PTR_ERR(urb); 1793 1794 hdev->stat.acl_tx++; 1795 return submit_or_queue_tx_urb(hdev, urb); 1796 1797 case HCI_SCODATA_PKT: 1798 if (hci_conn_num(hdev, SCO_LINK) < 1) 1799 return -ENODEV; 1800 1801 urb = alloc_isoc_urb(hdev, skb); 1802 if (IS_ERR(urb)) 1803 return PTR_ERR(urb); 1804 1805 hdev->stat.sco_tx++; 1806 return submit_tx_urb(hdev, urb); 1807 1808 case HCI_ISODATA_PKT: 1809 urb = alloc_bulk_urb(hdev, skb); 1810 if (IS_ERR(urb)) 1811 return PTR_ERR(urb); 1812 1813 return submit_or_queue_tx_urb(hdev, urb); 1814 } 1815 1816 return -EILSEQ; 1817 } 1818 1819 static void btusb_notify(struct hci_dev *hdev, unsigned int evt) 1820 { 1821 struct btusb_data *data = hci_get_drvdata(hdev); 1822 1823 BT_DBG("%s evt %d", hdev->name, evt); 1824 1825 if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) { 1826 data->sco_num = hci_conn_num(hdev, SCO_LINK); 1827 data->air_mode = evt; 1828 schedule_work(&data->work); 1829 } 1830 } 1831 1832 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting) 1833 { 1834 struct btusb_data *data = hci_get_drvdata(hdev); 1835 struct usb_interface *intf = data->isoc; 1836 struct usb_endpoint_descriptor *ep_desc; 1837 int i, err; 1838 1839 if (!data->isoc) 1840 return -ENODEV; 1841 1842 err = usb_set_interface(data->udev, data->isoc_ifnum, altsetting); 1843 if (err < 0) { 1844 bt_dev_err(hdev, "setting interface failed (%d)", -err); 1845 return err; 1846 } 1847 1848 data->isoc_altsetting = altsetting; 1849 1850 data->isoc_tx_ep = NULL; 1851 data->isoc_rx_ep = NULL; 1852 1853 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { 1854 ep_desc = &intf->cur_altsetting->endpoint[i].desc; 1855 1856 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) { 1857 data->isoc_tx_ep = ep_desc; 1858 continue; 1859 } 1860 1861 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) { 1862 data->isoc_rx_ep = ep_desc; 1863 continue; 1864 } 1865 } 1866 1867 if (!data->isoc_tx_ep || !data->isoc_rx_ep) { 1868 bt_dev_err(hdev, "invalid SCO descriptors"); 1869 return -ENODEV; 1870 } 1871 1872 return 0; 1873 } 1874 1875 static int btusb_switch_alt_setting(struct hci_dev *hdev, int new_alts) 1876 { 1877 struct btusb_data *data = hci_get_drvdata(hdev); 1878 int err; 1879 1880 if (data->isoc_altsetting != new_alts) { 1881 unsigned long flags; 1882 1883 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1884 usb_kill_anchored_urbs(&data->isoc_anchor); 1885 1886 /* When isochronous alternate setting needs to be 1887 * changed, because SCO connection has been added 1888 * or removed, a packet fragment may be left in the 1889 * reassembling state. This could lead to wrongly 1890 * assembled fragments. 1891 * 1892 * Clear outstanding fragment when selecting a new 1893 * alternate setting. 1894 */ 1895 spin_lock_irqsave(&data->rxlock, flags); 1896 kfree_skb(data->sco_skb); 1897 data->sco_skb = NULL; 1898 spin_unlock_irqrestore(&data->rxlock, flags); 1899 1900 err = __set_isoc_interface(hdev, new_alts); 1901 if (err < 0) 1902 return err; 1903 } 1904 1905 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) { 1906 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0) 1907 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1908 else 1909 btusb_submit_isoc_urb(hdev, GFP_KERNEL); 1910 } 1911 1912 return 0; 1913 } 1914 1915 static struct usb_host_interface *btusb_find_altsetting(struct btusb_data *data, 1916 int alt) 1917 { 1918 struct usb_interface *intf = data->isoc; 1919 int i; 1920 1921 BT_DBG("Looking for Alt no :%d", alt); 1922 1923 if (!intf) 1924 return NULL; 1925 1926 for (i = 0; i < intf->num_altsetting; i++) { 1927 if (intf->altsetting[i].desc.bAlternateSetting == alt) 1928 return &intf->altsetting[i]; 1929 } 1930 1931 return NULL; 1932 } 1933 1934 static void btusb_work(struct work_struct *work) 1935 { 1936 struct btusb_data *data = container_of(work, struct btusb_data, work); 1937 struct hci_dev *hdev = data->hdev; 1938 int new_alts = 0; 1939 int err; 1940 1941 if (data->sco_num > 0) { 1942 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) { 1943 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf); 1944 if (err < 0) { 1945 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1946 usb_kill_anchored_urbs(&data->isoc_anchor); 1947 return; 1948 } 1949 1950 set_bit(BTUSB_DID_ISO_RESUME, &data->flags); 1951 } 1952 1953 if (data->air_mode == HCI_NOTIFY_ENABLE_SCO_CVSD) { 1954 if (hdev->voice_setting & 0x0020) { 1955 static const int alts[3] = { 2, 4, 5 }; 1956 1957 new_alts = alts[data->sco_num - 1]; 1958 } else { 1959 new_alts = data->sco_num; 1960 } 1961 } else if (data->air_mode == HCI_NOTIFY_ENABLE_SCO_TRANSP) { 1962 /* Bluetooth USB spec recommends alt 6 (63 bytes), but 1963 * many adapters do not support it. Alt 1 appears to 1964 * work for all adapters that do not have alt 6, and 1965 * which work with WBS at all. Some devices prefer 1966 * alt 3 (HCI payload >= 60 Bytes let air packet 1967 * data satisfy 60 bytes), requiring 1968 * MTU >= 3 (packets) * 25 (size) - 3 (headers) = 72 1969 * see also Core spec 5, vol 4, B 2.1.1 & Table 2.1. 1970 */ 1971 if (btusb_find_altsetting(data, 6)) 1972 new_alts = 6; 1973 else if (btusb_find_altsetting(data, 3) && 1974 hdev->sco_mtu >= 72 && 1975 test_bit(BTUSB_USE_ALT3_FOR_WBS, &data->flags)) 1976 new_alts = 3; 1977 else 1978 new_alts = 1; 1979 } 1980 1981 if (btusb_switch_alt_setting(hdev, new_alts) < 0) 1982 bt_dev_err(hdev, "set USB alt:(%d) failed!", new_alts); 1983 } else { 1984 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1985 usb_kill_anchored_urbs(&data->isoc_anchor); 1986 1987 __set_isoc_interface(hdev, 0); 1988 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags)) 1989 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf); 1990 } 1991 } 1992 1993 static void btusb_waker(struct work_struct *work) 1994 { 1995 struct btusb_data *data = container_of(work, struct btusb_data, waker); 1996 int err; 1997 1998 err = usb_autopm_get_interface(data->intf); 1999 if (err < 0) 2000 return; 2001 2002 usb_autopm_put_interface(data->intf); 2003 } 2004 2005 static void btusb_rx_work(struct work_struct *work) 2006 { 2007 struct btusb_data *data = container_of(work, struct btusb_data, 2008 rx_work.work); 2009 struct sk_buff *skb; 2010 2011 /* Dequeue ACL data received during the interval */ 2012 while ((skb = skb_dequeue(&data->acl_q))) 2013 data->recv_acl(data->hdev, skb); 2014 } 2015 2016 static int btusb_setup_bcm92035(struct hci_dev *hdev) 2017 { 2018 struct sk_buff *skb; 2019 u8 val = 0x00; 2020 2021 BT_DBG("%s", hdev->name); 2022 2023 skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT); 2024 if (IS_ERR(skb)) 2025 bt_dev_err(hdev, "BCM92035 command failed (%ld)", PTR_ERR(skb)); 2026 else 2027 kfree_skb(skb); 2028 2029 return 0; 2030 } 2031 2032 static int btusb_setup_csr(struct hci_dev *hdev) 2033 { 2034 struct btusb_data *data = hci_get_drvdata(hdev); 2035 u16 bcdDevice = le16_to_cpu(data->udev->descriptor.bcdDevice); 2036 struct hci_rp_read_local_version *rp; 2037 struct sk_buff *skb; 2038 bool is_fake = false; 2039 int ret; 2040 2041 BT_DBG("%s", hdev->name); 2042 2043 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL, 2044 HCI_INIT_TIMEOUT); 2045 if (IS_ERR(skb)) { 2046 int err = PTR_ERR(skb); 2047 bt_dev_err(hdev, "CSR: Local version failed (%d)", err); 2048 return err; 2049 } 2050 2051 if (skb->len != sizeof(struct hci_rp_read_local_version)) { 2052 bt_dev_err(hdev, "CSR: Local version length mismatch"); 2053 kfree_skb(skb); 2054 return -EIO; 2055 } 2056 2057 rp = (struct hci_rp_read_local_version *)skb->data; 2058 2059 /* Detect a wide host of Chinese controllers that aren't CSR. 2060 * 2061 * Known fake bcdDevices: 0x0100, 0x0134, 0x1915, 0x2520, 0x7558, 0x8891 2062 * 2063 * The main thing they have in common is that these are really popular low-cost 2064 * options that support newer Bluetooth versions but rely on heavy VID/PID 2065 * squatting of this poor old Bluetooth 1.1 device. Even sold as such. 2066 * 2067 * We detect actual CSR devices by checking that the HCI manufacturer code 2068 * is Cambridge Silicon Radio (10) and ensuring that LMP sub-version and 2069 * HCI rev values always match. As they both store the firmware number. 2070 */ 2071 if (le16_to_cpu(rp->manufacturer) != 10 || 2072 le16_to_cpu(rp->hci_rev) != le16_to_cpu(rp->lmp_subver)) 2073 is_fake = true; 2074 2075 /* Known legit CSR firmware build numbers and their supported BT versions: 2076 * - 1.1 (0x1) -> 0x0073, 0x020d, 0x033c, 0x034e 2077 * - 1.2 (0x2) -> 0x04d9, 0x0529 2078 * - 2.0 (0x3) -> 0x07a6, 0x07ad, 0x0c5c 2079 * - 2.1 (0x4) -> 0x149c, 0x1735, 0x1899 (0x1899 is a BlueCore4-External) 2080 * - 4.0 (0x6) -> 0x1d86, 0x2031, 0x22bb 2081 * 2082 * e.g. Real CSR dongles with LMP subversion 0x73 are old enough that 2083 * support BT 1.1 only; so it's a dead giveaway when some 2084 * third-party BT 4.0 dongle reuses it. 2085 */ 2086 else if (le16_to_cpu(rp->lmp_subver) <= 0x034e && 2087 le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_1_1) 2088 is_fake = true; 2089 2090 else if (le16_to_cpu(rp->lmp_subver) <= 0x0529 && 2091 le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_1_2) 2092 is_fake = true; 2093 2094 else if (le16_to_cpu(rp->lmp_subver) <= 0x0c5c && 2095 le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_2_0) 2096 is_fake = true; 2097 2098 else if (le16_to_cpu(rp->lmp_subver) <= 0x1899 && 2099 le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_2_1) 2100 is_fake = true; 2101 2102 else if (le16_to_cpu(rp->lmp_subver) <= 0x22bb && 2103 le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_4_0) 2104 is_fake = true; 2105 2106 /* Other clones which beat all the above checks */ 2107 else if (bcdDevice == 0x0134 && 2108 le16_to_cpu(rp->lmp_subver) == 0x0c5c && 2109 le16_to_cpu(rp->hci_ver) == BLUETOOTH_VER_2_0) 2110 is_fake = true; 2111 2112 if (is_fake) { 2113 bt_dev_warn(hdev, "CSR: Unbranded CSR clone detected; adding workarounds and force-suspending once..."); 2114 2115 /* Generally these clones have big discrepancies between 2116 * advertised features and what's actually supported. 2117 * Probably will need to be expanded in the future; 2118 * without these the controller will lock up. 2119 */ 2120 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks); 2121 set_bit(HCI_QUIRK_BROKEN_FILTER_CLEAR_ALL, &hdev->quirks); 2122 set_bit(HCI_QUIRK_NO_SUSPEND_NOTIFIER, &hdev->quirks); 2123 2124 /* Clear the reset quirk since this is not an actual 2125 * early Bluetooth 1.1 device from CSR. 2126 */ 2127 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); 2128 clear_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); 2129 2130 /* 2131 * Special workaround for these BT 4.0 chip clones, and potentially more: 2132 * 2133 * - 0x0134: a Barrot 8041a02 (HCI rev: 0x0810 sub: 0x1012) 2134 * - 0x7558: IC markings FR3191AHAL 749H15143 (HCI rev/sub-version: 0x0709) 2135 * 2136 * These controllers are really messed-up. 2137 * 2138 * 1. Their bulk RX endpoint will never report any data unless 2139 * the device was suspended at least once (yes, really). 2140 * 2. They will not wakeup when autosuspended and receiving data 2141 * on their bulk RX endpoint from e.g. a keyboard or mouse 2142 * (IOW remote-wakeup support is broken for the bulk endpoint). 2143 * 2144 * To fix 1. enable runtime-suspend, force-suspend the 2145 * HCI and then wake-it up by disabling runtime-suspend. 2146 * 2147 * To fix 2. clear the HCI's can_wake flag, this way the HCI 2148 * will still be autosuspended when it is not open. 2149 * 2150 * -- 2151 * 2152 * Because these are widespread problems we prefer generic solutions; so 2153 * apply this initialization quirk to every controller that gets here, 2154 * it should be harmless. The alternative is to not work at all. 2155 */ 2156 pm_runtime_allow(&data->udev->dev); 2157 2158 ret = pm_runtime_suspend(&data->udev->dev); 2159 if (ret >= 0) 2160 msleep(200); 2161 else 2162 bt_dev_warn(hdev, "CSR: Couldn't suspend the device for our Barrot 8041a02 receive-issue workaround"); 2163 2164 pm_runtime_forbid(&data->udev->dev); 2165 2166 device_set_wakeup_capable(&data->udev->dev, false); 2167 2168 /* Re-enable autosuspend if this was requested */ 2169 if (enable_autosuspend) 2170 usb_enable_autosuspend(data->udev); 2171 } 2172 2173 kfree_skb(skb); 2174 2175 return 0; 2176 } 2177 2178 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode) 2179 { 2180 struct sk_buff *skb; 2181 struct hci_event_hdr *hdr; 2182 struct hci_ev_cmd_complete *evt; 2183 2184 skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_KERNEL); 2185 if (!skb) 2186 return -ENOMEM; 2187 2188 hdr = skb_put(skb, sizeof(*hdr)); 2189 hdr->evt = HCI_EV_CMD_COMPLETE; 2190 hdr->plen = sizeof(*evt) + 1; 2191 2192 evt = skb_put(skb, sizeof(*evt)); 2193 evt->ncmd = 0x01; 2194 evt->opcode = cpu_to_le16(opcode); 2195 2196 skb_put_u8(skb, 0x00); 2197 2198 hci_skb_pkt_type(skb) = HCI_EVENT_PKT; 2199 2200 return hci_recv_frame(hdev, skb); 2201 } 2202 2203 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer, 2204 int count) 2205 { 2206 struct hci_dev *hdev = data->hdev; 2207 2208 /* When the device is in bootloader mode, then it can send 2209 * events via the bulk endpoint. These events are treated the 2210 * same way as the ones received from the interrupt endpoint. 2211 */ 2212 if (btintel_test_flag(hdev, INTEL_BOOTLOADER)) 2213 return btusb_recv_intr(data, buffer, count); 2214 2215 return btusb_recv_bulk(data, buffer, count); 2216 } 2217 2218 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb) 2219 { 2220 if (btintel_test_flag(hdev, INTEL_BOOTLOADER)) { 2221 struct hci_event_hdr *hdr = (void *)skb->data; 2222 2223 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff && 2224 hdr->plen > 0) { 2225 const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1; 2226 unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1; 2227 2228 switch (skb->data[2]) { 2229 case 0x02: 2230 /* When switching to the operational firmware 2231 * the device sends a vendor specific event 2232 * indicating that the bootup completed. 2233 */ 2234 btintel_bootup(hdev, ptr, len); 2235 break; 2236 case 0x06: 2237 /* When the firmware loading completes the 2238 * device sends out a vendor specific event 2239 * indicating the result of the firmware 2240 * loading. 2241 */ 2242 btintel_secure_send_result(hdev, ptr, len); 2243 break; 2244 } 2245 } 2246 } 2247 2248 return hci_recv_frame(hdev, skb); 2249 } 2250 2251 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb) 2252 { 2253 struct urb *urb; 2254 2255 BT_DBG("%s", hdev->name); 2256 2257 switch (hci_skb_pkt_type(skb)) { 2258 case HCI_COMMAND_PKT: 2259 if (btintel_test_flag(hdev, INTEL_BOOTLOADER)) { 2260 struct hci_command_hdr *cmd = (void *)skb->data; 2261 __u16 opcode = le16_to_cpu(cmd->opcode); 2262 2263 /* When in bootloader mode and the command 0xfc09 2264 * is received, it needs to be send down the 2265 * bulk endpoint. So allocate a bulk URB instead. 2266 */ 2267 if (opcode == 0xfc09) 2268 urb = alloc_bulk_urb(hdev, skb); 2269 else 2270 urb = alloc_ctrl_urb(hdev, skb); 2271 2272 /* When the 0xfc01 command is issued to boot into 2273 * the operational firmware, it will actually not 2274 * send a command complete event. To keep the flow 2275 * control working inject that event here. 2276 */ 2277 if (opcode == 0xfc01) 2278 inject_cmd_complete(hdev, opcode); 2279 } else { 2280 urb = alloc_ctrl_urb(hdev, skb); 2281 } 2282 if (IS_ERR(urb)) 2283 return PTR_ERR(urb); 2284 2285 hdev->stat.cmd_tx++; 2286 return submit_or_queue_tx_urb(hdev, urb); 2287 2288 case HCI_ACLDATA_PKT: 2289 urb = alloc_bulk_urb(hdev, skb); 2290 if (IS_ERR(urb)) 2291 return PTR_ERR(urb); 2292 2293 hdev->stat.acl_tx++; 2294 return submit_or_queue_tx_urb(hdev, urb); 2295 2296 case HCI_SCODATA_PKT: 2297 if (hci_conn_num(hdev, SCO_LINK) < 1) 2298 return -ENODEV; 2299 2300 urb = alloc_isoc_urb(hdev, skb); 2301 if (IS_ERR(urb)) 2302 return PTR_ERR(urb); 2303 2304 hdev->stat.sco_tx++; 2305 return submit_tx_urb(hdev, urb); 2306 2307 case HCI_ISODATA_PKT: 2308 urb = alloc_bulk_urb(hdev, skb); 2309 if (IS_ERR(urb)) 2310 return PTR_ERR(urb); 2311 2312 return submit_or_queue_tx_urb(hdev, urb); 2313 } 2314 2315 return -EILSEQ; 2316 } 2317 2318 /* UHW CR mapping */ 2319 #define MTK_BT_MISC 0x70002510 2320 #define MTK_BT_SUBSYS_RST 0x70002610 2321 #define MTK_UDMA_INT_STA_BT 0x74000024 2322 #define MTK_UDMA_INT_STA_BT1 0x74000308 2323 #define MTK_BT_WDT_STATUS 0x740003A0 2324 #define MTK_EP_RST_OPT 0x74011890 2325 #define MTK_EP_RST_IN_OUT_OPT 0x00010001 2326 #define MTK_BT_RST_DONE 0x00000100 2327 #define MTK_BT_RESET_WAIT_MS 100 2328 #define MTK_BT_RESET_NUM_TRIES 10 2329 2330 static void btusb_mtk_wmt_recv(struct urb *urb) 2331 { 2332 struct hci_dev *hdev = urb->context; 2333 struct btusb_data *data = hci_get_drvdata(hdev); 2334 struct sk_buff *skb; 2335 int err; 2336 2337 if (urb->status == 0 && urb->actual_length > 0) { 2338 hdev->stat.byte_rx += urb->actual_length; 2339 2340 /* WMT event shouldn't be fragmented and the size should be 2341 * less than HCI_WMT_MAX_EVENT_SIZE. 2342 */ 2343 skb = bt_skb_alloc(HCI_WMT_MAX_EVENT_SIZE, GFP_ATOMIC); 2344 if (!skb) { 2345 hdev->stat.err_rx++; 2346 kfree(urb->setup_packet); 2347 return; 2348 } 2349 2350 hci_skb_pkt_type(skb) = HCI_EVENT_PKT; 2351 skb_put_data(skb, urb->transfer_buffer, urb->actual_length); 2352 2353 /* When someone waits for the WMT event, the skb is being cloned 2354 * and being processed the events from there then. 2355 */ 2356 if (test_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags)) { 2357 data->evt_skb = skb_clone(skb, GFP_ATOMIC); 2358 if (!data->evt_skb) { 2359 kfree_skb(skb); 2360 kfree(urb->setup_packet); 2361 return; 2362 } 2363 } 2364 2365 err = hci_recv_frame(hdev, skb); 2366 if (err < 0) { 2367 kfree_skb(data->evt_skb); 2368 data->evt_skb = NULL; 2369 kfree(urb->setup_packet); 2370 return; 2371 } 2372 2373 if (test_and_clear_bit(BTUSB_TX_WAIT_VND_EVT, 2374 &data->flags)) { 2375 /* Barrier to sync with other CPUs */ 2376 smp_mb__after_atomic(); 2377 wake_up_bit(&data->flags, 2378 BTUSB_TX_WAIT_VND_EVT); 2379 } 2380 kfree(urb->setup_packet); 2381 return; 2382 } else if (urb->status == -ENOENT) { 2383 /* Avoid suspend failed when usb_kill_urb */ 2384 return; 2385 } 2386 2387 usb_mark_last_busy(data->udev); 2388 2389 /* The URB complete handler is still called with urb->actual_length = 0 2390 * when the event is not available, so we should keep re-submitting 2391 * URB until WMT event returns, Also, It's necessary to wait some time 2392 * between the two consecutive control URBs to relax the target device 2393 * to generate the event. Otherwise, the WMT event cannot return from 2394 * the device successfully. 2395 */ 2396 udelay(500); 2397 2398 usb_anchor_urb(urb, &data->ctrl_anchor); 2399 err = usb_submit_urb(urb, GFP_ATOMIC); 2400 if (err < 0) { 2401 kfree(urb->setup_packet); 2402 /* -EPERM: urb is being killed; 2403 * -ENODEV: device got disconnected 2404 */ 2405 if (err != -EPERM && err != -ENODEV) 2406 bt_dev_err(hdev, "urb %p failed to resubmit (%d)", 2407 urb, -err); 2408 usb_unanchor_urb(urb); 2409 } 2410 } 2411 2412 static int btusb_mtk_submit_wmt_recv_urb(struct hci_dev *hdev) 2413 { 2414 struct btusb_data *data = hci_get_drvdata(hdev); 2415 struct usb_ctrlrequest *dr; 2416 unsigned char *buf; 2417 int err, size = 64; 2418 unsigned int pipe; 2419 struct urb *urb; 2420 2421 urb = usb_alloc_urb(0, GFP_KERNEL); 2422 if (!urb) 2423 return -ENOMEM; 2424 2425 dr = kmalloc(sizeof(*dr), GFP_KERNEL); 2426 if (!dr) { 2427 usb_free_urb(urb); 2428 return -ENOMEM; 2429 } 2430 2431 dr->bRequestType = USB_TYPE_VENDOR | USB_DIR_IN; 2432 dr->bRequest = 1; 2433 dr->wIndex = cpu_to_le16(0); 2434 dr->wValue = cpu_to_le16(48); 2435 dr->wLength = cpu_to_le16(size); 2436 2437 buf = kmalloc(size, GFP_KERNEL); 2438 if (!buf) { 2439 kfree(dr); 2440 usb_free_urb(urb); 2441 return -ENOMEM; 2442 } 2443 2444 pipe = usb_rcvctrlpipe(data->udev, 0); 2445 2446 usb_fill_control_urb(urb, data->udev, pipe, (void *)dr, 2447 buf, size, btusb_mtk_wmt_recv, hdev); 2448 2449 urb->transfer_flags |= URB_FREE_BUFFER; 2450 2451 usb_anchor_urb(urb, &data->ctrl_anchor); 2452 err = usb_submit_urb(urb, GFP_KERNEL); 2453 if (err < 0) { 2454 if (err != -EPERM && err != -ENODEV) 2455 bt_dev_err(hdev, "urb %p submission failed (%d)", 2456 urb, -err); 2457 usb_unanchor_urb(urb); 2458 } 2459 2460 usb_free_urb(urb); 2461 2462 return err; 2463 } 2464 2465 static int btusb_mtk_hci_wmt_sync(struct hci_dev *hdev, 2466 struct btmtk_hci_wmt_params *wmt_params) 2467 { 2468 struct btusb_data *data = hci_get_drvdata(hdev); 2469 struct btmtk_hci_wmt_evt_funcc *wmt_evt_funcc; 2470 u32 hlen, status = BTMTK_WMT_INVALID; 2471 struct btmtk_hci_wmt_evt *wmt_evt; 2472 struct btmtk_hci_wmt_cmd *wc; 2473 struct btmtk_wmt_hdr *hdr; 2474 int err; 2475 2476 /* Send the WMT command and wait until the WMT event returns */ 2477 hlen = sizeof(*hdr) + wmt_params->dlen; 2478 if (hlen > 255) 2479 return -EINVAL; 2480 2481 wc = kzalloc(hlen, GFP_KERNEL); 2482 if (!wc) 2483 return -ENOMEM; 2484 2485 hdr = &wc->hdr; 2486 hdr->dir = 1; 2487 hdr->op = wmt_params->op; 2488 hdr->dlen = cpu_to_le16(wmt_params->dlen + 1); 2489 hdr->flag = wmt_params->flag; 2490 memcpy(wc->data, wmt_params->data, wmt_params->dlen); 2491 2492 set_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags); 2493 2494 /* WMT cmd/event doesn't follow up the generic HCI cmd/event handling, 2495 * it needs constantly polling control pipe until the host received the 2496 * WMT event, thus, we should require to specifically acquire PM counter 2497 * on the USB to prevent the interface from entering auto suspended 2498 * while WMT cmd/event in progress. 2499 */ 2500 err = usb_autopm_get_interface(data->intf); 2501 if (err < 0) 2502 goto err_free_wc; 2503 2504 err = __hci_cmd_send(hdev, 0xfc6f, hlen, wc); 2505 2506 if (err < 0) { 2507 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags); 2508 usb_autopm_put_interface(data->intf); 2509 goto err_free_wc; 2510 } 2511 2512 /* Submit control IN URB on demand to process the WMT event */ 2513 err = btusb_mtk_submit_wmt_recv_urb(hdev); 2514 2515 usb_autopm_put_interface(data->intf); 2516 2517 if (err < 0) 2518 goto err_free_wc; 2519 2520 /* The vendor specific WMT commands are all answered by a vendor 2521 * specific event and will have the Command Status or Command 2522 * Complete as with usual HCI command flow control. 2523 * 2524 * After sending the command, wait for BTUSB_TX_WAIT_VND_EVT 2525 * state to be cleared. The driver specific event receive routine 2526 * will clear that state and with that indicate completion of the 2527 * WMT command. 2528 */ 2529 err = wait_on_bit_timeout(&data->flags, BTUSB_TX_WAIT_VND_EVT, 2530 TASK_INTERRUPTIBLE, HCI_INIT_TIMEOUT); 2531 if (err == -EINTR) { 2532 bt_dev_err(hdev, "Execution of wmt command interrupted"); 2533 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags); 2534 goto err_free_wc; 2535 } 2536 2537 if (err) { 2538 bt_dev_err(hdev, "Execution of wmt command timed out"); 2539 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags); 2540 err = -ETIMEDOUT; 2541 goto err_free_wc; 2542 } 2543 2544 /* Parse and handle the return WMT event */ 2545 wmt_evt = (struct btmtk_hci_wmt_evt *)data->evt_skb->data; 2546 if (wmt_evt->whdr.op != hdr->op) { 2547 bt_dev_err(hdev, "Wrong op received %d expected %d", 2548 wmt_evt->whdr.op, hdr->op); 2549 err = -EIO; 2550 goto err_free_skb; 2551 } 2552 2553 switch (wmt_evt->whdr.op) { 2554 case BTMTK_WMT_SEMAPHORE: 2555 if (wmt_evt->whdr.flag == 2) 2556 status = BTMTK_WMT_PATCH_UNDONE; 2557 else 2558 status = BTMTK_WMT_PATCH_DONE; 2559 break; 2560 case BTMTK_WMT_FUNC_CTRL: 2561 wmt_evt_funcc = (struct btmtk_hci_wmt_evt_funcc *)wmt_evt; 2562 if (be16_to_cpu(wmt_evt_funcc->status) == 0x404) 2563 status = BTMTK_WMT_ON_DONE; 2564 else if (be16_to_cpu(wmt_evt_funcc->status) == 0x420) 2565 status = BTMTK_WMT_ON_PROGRESS; 2566 else 2567 status = BTMTK_WMT_ON_UNDONE; 2568 break; 2569 case BTMTK_WMT_PATCH_DWNLD: 2570 if (wmt_evt->whdr.flag == 2) 2571 status = BTMTK_WMT_PATCH_DONE; 2572 else if (wmt_evt->whdr.flag == 1) 2573 status = BTMTK_WMT_PATCH_PROGRESS; 2574 else 2575 status = BTMTK_WMT_PATCH_UNDONE; 2576 break; 2577 } 2578 2579 if (wmt_params->status) 2580 *wmt_params->status = status; 2581 2582 err_free_skb: 2583 kfree_skb(data->evt_skb); 2584 data->evt_skb = NULL; 2585 err_free_wc: 2586 kfree(wc); 2587 return err; 2588 } 2589 2590 static int btusb_mtk_func_query(struct hci_dev *hdev) 2591 { 2592 struct btmtk_hci_wmt_params wmt_params; 2593 int status, err; 2594 u8 param = 0; 2595 2596 /* Query whether the function is enabled */ 2597 wmt_params.op = BTMTK_WMT_FUNC_CTRL; 2598 wmt_params.flag = 4; 2599 wmt_params.dlen = sizeof(param); 2600 wmt_params.data = ¶m; 2601 wmt_params.status = &status; 2602 2603 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params); 2604 if (err < 0) { 2605 bt_dev_err(hdev, "Failed to query function status (%d)", err); 2606 return err; 2607 } 2608 2609 return status; 2610 } 2611 2612 static int btusb_mtk_uhw_reg_write(struct btusb_data *data, u32 reg, u32 val) 2613 { 2614 struct hci_dev *hdev = data->hdev; 2615 int pipe, err; 2616 void *buf; 2617 2618 buf = kzalloc(4, GFP_KERNEL); 2619 if (!buf) 2620 return -ENOMEM; 2621 2622 put_unaligned_le32(val, buf); 2623 2624 pipe = usb_sndctrlpipe(data->udev, 0); 2625 err = usb_control_msg(data->udev, pipe, 0x02, 2626 0x5E, 2627 reg >> 16, reg & 0xffff, 2628 buf, 4, USB_CTRL_SET_TIMEOUT); 2629 if (err < 0) { 2630 bt_dev_err(hdev, "Failed to write uhw reg(%d)", err); 2631 goto err_free_buf; 2632 } 2633 2634 err_free_buf: 2635 kfree(buf); 2636 2637 return err; 2638 } 2639 2640 static int btusb_mtk_uhw_reg_read(struct btusb_data *data, u32 reg, u32 *val) 2641 { 2642 struct hci_dev *hdev = data->hdev; 2643 int pipe, err; 2644 void *buf; 2645 2646 buf = kzalloc(4, GFP_KERNEL); 2647 if (!buf) 2648 return -ENOMEM; 2649 2650 pipe = usb_rcvctrlpipe(data->udev, 0); 2651 err = usb_control_msg(data->udev, pipe, 0x01, 2652 0xDE, 2653 reg >> 16, reg & 0xffff, 2654 buf, 4, USB_CTRL_SET_TIMEOUT); 2655 if (err < 0) { 2656 bt_dev_err(hdev, "Failed to read uhw reg(%d)", err); 2657 goto err_free_buf; 2658 } 2659 2660 *val = get_unaligned_le32(buf); 2661 bt_dev_dbg(hdev, "reg=%x, value=0x%08x", reg, *val); 2662 2663 err_free_buf: 2664 kfree(buf); 2665 2666 return err; 2667 } 2668 2669 static int btusb_mtk_reg_read(struct btusb_data *data, u32 reg, u32 *val) 2670 { 2671 int pipe, err, size = sizeof(u32); 2672 void *buf; 2673 2674 buf = kzalloc(size, GFP_KERNEL); 2675 if (!buf) 2676 return -ENOMEM; 2677 2678 pipe = usb_rcvctrlpipe(data->udev, 0); 2679 err = usb_control_msg(data->udev, pipe, 0x63, 2680 USB_TYPE_VENDOR | USB_DIR_IN, 2681 reg >> 16, reg & 0xffff, 2682 buf, size, USB_CTRL_SET_TIMEOUT); 2683 if (err < 0) 2684 goto err_free_buf; 2685 2686 *val = get_unaligned_le32(buf); 2687 2688 err_free_buf: 2689 kfree(buf); 2690 2691 return err; 2692 } 2693 2694 static int btusb_mtk_id_get(struct btusb_data *data, u32 reg, u32 *id) 2695 { 2696 return btusb_mtk_reg_read(data, reg, id); 2697 } 2698 2699 static int btusb_mtk_setup(struct hci_dev *hdev) 2700 { 2701 struct btusb_data *data = hci_get_drvdata(hdev); 2702 struct btmtk_hci_wmt_params wmt_params; 2703 ktime_t calltime, delta, rettime; 2704 struct btmtk_tci_sleep tci_sleep; 2705 unsigned long long duration; 2706 struct sk_buff *skb; 2707 const char *fwname; 2708 int err, status; 2709 u32 dev_id; 2710 char fw_bin_name[64]; 2711 u32 fw_version = 0; 2712 u8 param; 2713 2714 calltime = ktime_get(); 2715 2716 err = btusb_mtk_id_get(data, 0x80000008, &dev_id); 2717 if (err < 0) { 2718 bt_dev_err(hdev, "Failed to get device id (%d)", err); 2719 return err; 2720 } 2721 2722 if (!dev_id) { 2723 err = btusb_mtk_id_get(data, 0x70010200, &dev_id); 2724 if (err < 0) { 2725 bt_dev_err(hdev, "Failed to get device id (%d)", err); 2726 return err; 2727 } 2728 err = btusb_mtk_id_get(data, 0x80021004, &fw_version); 2729 if (err < 0) { 2730 bt_dev_err(hdev, "Failed to get fw version (%d)", err); 2731 return err; 2732 } 2733 } 2734 2735 switch (dev_id) { 2736 case 0x7663: 2737 fwname = FIRMWARE_MT7663; 2738 break; 2739 case 0x7668: 2740 fwname = FIRMWARE_MT7668; 2741 break; 2742 case 0x7922: 2743 case 0x7961: 2744 snprintf(fw_bin_name, sizeof(fw_bin_name), 2745 "mediatek/BT_RAM_CODE_MT%04x_1_%x_hdr.bin", 2746 dev_id & 0xffff, (fw_version & 0xff) + 1); 2747 err = btmtk_setup_firmware_79xx(hdev, fw_bin_name, 2748 btusb_mtk_hci_wmt_sync); 2749 if (err < 0) { 2750 bt_dev_err(hdev, "Failed to set up firmware (%d)", err); 2751 return err; 2752 } 2753 2754 /* It's Device EndPoint Reset Option Register */ 2755 btusb_mtk_uhw_reg_write(data, MTK_EP_RST_OPT, MTK_EP_RST_IN_OUT_OPT); 2756 2757 /* Enable Bluetooth protocol */ 2758 param = 1; 2759 wmt_params.op = BTMTK_WMT_FUNC_CTRL; 2760 wmt_params.flag = 0; 2761 wmt_params.dlen = sizeof(param); 2762 wmt_params.data = ¶m; 2763 wmt_params.status = NULL; 2764 2765 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params); 2766 if (err < 0) { 2767 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err); 2768 return err; 2769 } 2770 2771 hci_set_msft_opcode(hdev, 0xFD30); 2772 hci_set_aosp_capable(hdev); 2773 goto done; 2774 default: 2775 bt_dev_err(hdev, "Unsupported hardware variant (%08x)", 2776 dev_id); 2777 return -ENODEV; 2778 } 2779 2780 /* Query whether the firmware is already download */ 2781 wmt_params.op = BTMTK_WMT_SEMAPHORE; 2782 wmt_params.flag = 1; 2783 wmt_params.dlen = 0; 2784 wmt_params.data = NULL; 2785 wmt_params.status = &status; 2786 2787 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params); 2788 if (err < 0) { 2789 bt_dev_err(hdev, "Failed to query firmware status (%d)", err); 2790 return err; 2791 } 2792 2793 if (status == BTMTK_WMT_PATCH_DONE) { 2794 bt_dev_info(hdev, "firmware already downloaded"); 2795 goto ignore_setup_fw; 2796 } 2797 2798 /* Setup a firmware which the device definitely requires */ 2799 err = btmtk_setup_firmware(hdev, fwname, 2800 btusb_mtk_hci_wmt_sync); 2801 if (err < 0) 2802 return err; 2803 2804 ignore_setup_fw: 2805 err = readx_poll_timeout(btusb_mtk_func_query, hdev, status, 2806 status < 0 || status != BTMTK_WMT_ON_PROGRESS, 2807 2000, 5000000); 2808 /* -ETIMEDOUT happens */ 2809 if (err < 0) 2810 return err; 2811 2812 /* The other errors happen in btusb_mtk_func_query */ 2813 if (status < 0) 2814 return status; 2815 2816 if (status == BTMTK_WMT_ON_DONE) { 2817 bt_dev_info(hdev, "function already on"); 2818 goto ignore_func_on; 2819 } 2820 2821 /* Enable Bluetooth protocol */ 2822 param = 1; 2823 wmt_params.op = BTMTK_WMT_FUNC_CTRL; 2824 wmt_params.flag = 0; 2825 wmt_params.dlen = sizeof(param); 2826 wmt_params.data = ¶m; 2827 wmt_params.status = NULL; 2828 2829 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params); 2830 if (err < 0) { 2831 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err); 2832 return err; 2833 } 2834 2835 ignore_func_on: 2836 /* Apply the low power environment setup */ 2837 tci_sleep.mode = 0x5; 2838 tci_sleep.duration = cpu_to_le16(0x640); 2839 tci_sleep.host_duration = cpu_to_le16(0x640); 2840 tci_sleep.host_wakeup_pin = 0; 2841 tci_sleep.time_compensation = 0; 2842 2843 skb = __hci_cmd_sync(hdev, 0xfc7a, sizeof(tci_sleep), &tci_sleep, 2844 HCI_INIT_TIMEOUT); 2845 if (IS_ERR(skb)) { 2846 err = PTR_ERR(skb); 2847 bt_dev_err(hdev, "Failed to apply low power setting (%d)", err); 2848 return err; 2849 } 2850 kfree_skb(skb); 2851 2852 done: 2853 rettime = ktime_get(); 2854 delta = ktime_sub(rettime, calltime); 2855 duration = (unsigned long long)ktime_to_ns(delta) >> 10; 2856 2857 bt_dev_info(hdev, "Device setup in %llu usecs", duration); 2858 2859 return 0; 2860 } 2861 2862 static int btusb_mtk_shutdown(struct hci_dev *hdev) 2863 { 2864 struct btmtk_hci_wmt_params wmt_params; 2865 u8 param = 0; 2866 int err; 2867 2868 /* Disable the device */ 2869 wmt_params.op = BTMTK_WMT_FUNC_CTRL; 2870 wmt_params.flag = 0; 2871 wmt_params.dlen = sizeof(param); 2872 wmt_params.data = ¶m; 2873 wmt_params.status = NULL; 2874 2875 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params); 2876 if (err < 0) { 2877 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err); 2878 return err; 2879 } 2880 2881 return 0; 2882 } 2883 2884 static void btusb_mtk_cmd_timeout(struct hci_dev *hdev) 2885 { 2886 struct btusb_data *data = hci_get_drvdata(hdev); 2887 u32 val; 2888 int err, retry = 0; 2889 2890 /* It's MediaTek specific bluetooth reset mechanism via USB */ 2891 if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) { 2892 bt_dev_err(hdev, "last reset failed? Not resetting again"); 2893 return; 2894 } 2895 2896 err = usb_autopm_get_interface(data->intf); 2897 if (err < 0) 2898 return; 2899 2900 btusb_stop_traffic(data); 2901 usb_kill_anchored_urbs(&data->tx_anchor); 2902 2903 /* It's Device EndPoint Reset Option Register */ 2904 bt_dev_dbg(hdev, "Initiating reset mechanism via uhw"); 2905 btusb_mtk_uhw_reg_write(data, MTK_EP_RST_OPT, MTK_EP_RST_IN_OUT_OPT); 2906 btusb_mtk_uhw_reg_read(data, MTK_BT_WDT_STATUS, &val); 2907 2908 /* Reset the bluetooth chip via USB interface. */ 2909 btusb_mtk_uhw_reg_write(data, MTK_BT_SUBSYS_RST, 1); 2910 btusb_mtk_uhw_reg_write(data, MTK_UDMA_INT_STA_BT, 0x000000FF); 2911 btusb_mtk_uhw_reg_read(data, MTK_UDMA_INT_STA_BT, &val); 2912 btusb_mtk_uhw_reg_write(data, MTK_UDMA_INT_STA_BT1, 0x000000FF); 2913 btusb_mtk_uhw_reg_read(data, MTK_UDMA_INT_STA_BT1, &val); 2914 /* MT7921 need to delay 20ms between toggle reset bit */ 2915 msleep(20); 2916 btusb_mtk_uhw_reg_write(data, MTK_BT_SUBSYS_RST, 0); 2917 btusb_mtk_uhw_reg_read(data, MTK_BT_SUBSYS_RST, &val); 2918 2919 /* Poll the register until reset is completed */ 2920 do { 2921 btusb_mtk_uhw_reg_read(data, MTK_BT_MISC, &val); 2922 if (val & MTK_BT_RST_DONE) { 2923 bt_dev_dbg(hdev, "Bluetooth Reset Successfully"); 2924 break; 2925 } 2926 2927 bt_dev_dbg(hdev, "Polling Bluetooth Reset CR"); 2928 retry++; 2929 msleep(MTK_BT_RESET_WAIT_MS); 2930 } while (retry < MTK_BT_RESET_NUM_TRIES); 2931 2932 btusb_mtk_id_get(data, 0x70010200, &val); 2933 if (!val) 2934 bt_dev_err(hdev, "Can't get device id, subsys reset fail."); 2935 2936 usb_queue_reset_device(data->intf); 2937 2938 clear_bit(BTUSB_HW_RESET_ACTIVE, &data->flags); 2939 } 2940 2941 static int btusb_recv_acl_mtk(struct hci_dev *hdev, struct sk_buff *skb) 2942 { 2943 struct btusb_data *data = hci_get_drvdata(hdev); 2944 u16 handle = le16_to_cpu(hci_acl_hdr(skb)->handle); 2945 2946 switch (handle) { 2947 case 0xfc6f: /* Firmware dump from device */ 2948 /* When the firmware hangs, the device can no longer 2949 * suspend and thus disable auto-suspend. 2950 */ 2951 usb_disable_autosuspend(data->udev); 2952 fallthrough; 2953 case 0x05ff: /* Firmware debug logging 1 */ 2954 case 0x05fe: /* Firmware debug logging 2 */ 2955 return hci_recv_diag(hdev, skb); 2956 } 2957 2958 return hci_recv_frame(hdev, skb); 2959 } 2960 2961 #ifdef CONFIG_PM 2962 /* Configure an out-of-band gpio as wake-up pin, if specified in device tree */ 2963 static int marvell_config_oob_wake(struct hci_dev *hdev) 2964 { 2965 struct sk_buff *skb; 2966 struct btusb_data *data = hci_get_drvdata(hdev); 2967 struct device *dev = &data->udev->dev; 2968 u16 pin, gap, opcode; 2969 int ret; 2970 u8 cmd[5]; 2971 2972 /* Move on if no wakeup pin specified */ 2973 if (of_property_read_u16(dev->of_node, "marvell,wakeup-pin", &pin) || 2974 of_property_read_u16(dev->of_node, "marvell,wakeup-gap-ms", &gap)) 2975 return 0; 2976 2977 /* Vendor specific command to configure a GPIO as wake-up pin */ 2978 opcode = hci_opcode_pack(0x3F, 0x59); 2979 cmd[0] = opcode & 0xFF; 2980 cmd[1] = opcode >> 8; 2981 cmd[2] = 2; /* length of parameters that follow */ 2982 cmd[3] = pin; 2983 cmd[4] = gap; /* time in ms, for which wakeup pin should be asserted */ 2984 2985 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL); 2986 if (!skb) { 2987 bt_dev_err(hdev, "%s: No memory", __func__); 2988 return -ENOMEM; 2989 } 2990 2991 skb_put_data(skb, cmd, sizeof(cmd)); 2992 hci_skb_pkt_type(skb) = HCI_COMMAND_PKT; 2993 2994 ret = btusb_send_frame(hdev, skb); 2995 if (ret) { 2996 bt_dev_err(hdev, "%s: configuration failed", __func__); 2997 kfree_skb(skb); 2998 return ret; 2999 } 3000 3001 return 0; 3002 } 3003 #endif 3004 3005 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev, 3006 const bdaddr_t *bdaddr) 3007 { 3008 struct sk_buff *skb; 3009 u8 buf[8]; 3010 long ret; 3011 3012 buf[0] = 0xfe; 3013 buf[1] = sizeof(bdaddr_t); 3014 memcpy(buf + 2, bdaddr, sizeof(bdaddr_t)); 3015 3016 skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT); 3017 if (IS_ERR(skb)) { 3018 ret = PTR_ERR(skb); 3019 bt_dev_err(hdev, "changing Marvell device address failed (%ld)", 3020 ret); 3021 return ret; 3022 } 3023 kfree_skb(skb); 3024 3025 return 0; 3026 } 3027 3028 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev, 3029 const bdaddr_t *bdaddr) 3030 { 3031 struct sk_buff *skb; 3032 u8 buf[10]; 3033 long ret; 3034 3035 buf[0] = 0x01; 3036 buf[1] = 0x01; 3037 buf[2] = 0x00; 3038 buf[3] = sizeof(bdaddr_t); 3039 memcpy(buf + 4, bdaddr, sizeof(bdaddr_t)); 3040 3041 skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT); 3042 if (IS_ERR(skb)) { 3043 ret = PTR_ERR(skb); 3044 bt_dev_err(hdev, "Change address command failed (%ld)", ret); 3045 return ret; 3046 } 3047 kfree_skb(skb); 3048 3049 return 0; 3050 } 3051 3052 static int btusb_set_bdaddr_wcn6855(struct hci_dev *hdev, 3053 const bdaddr_t *bdaddr) 3054 { 3055 struct sk_buff *skb; 3056 u8 buf[6]; 3057 long ret; 3058 3059 memcpy(buf, bdaddr, sizeof(bdaddr_t)); 3060 3061 skb = __hci_cmd_sync_ev(hdev, 0xfc14, sizeof(buf), buf, 3062 HCI_EV_CMD_COMPLETE, HCI_INIT_TIMEOUT); 3063 if (IS_ERR(skb)) { 3064 ret = PTR_ERR(skb); 3065 bt_dev_err(hdev, "Change address command failed (%ld)", ret); 3066 return ret; 3067 } 3068 kfree_skb(skb); 3069 3070 return 0; 3071 } 3072 3073 #define QCA_DFU_PACKET_LEN 4096 3074 3075 #define QCA_GET_TARGET_VERSION 0x09 3076 #define QCA_CHECK_STATUS 0x05 3077 #define QCA_DFU_DOWNLOAD 0x01 3078 3079 #define QCA_SYSCFG_UPDATED 0x40 3080 #define QCA_PATCH_UPDATED 0x80 3081 #define QCA_DFU_TIMEOUT 3000 3082 #define QCA_FLAG_MULTI_NVM 0x80 3083 #define QCA_BT_RESET_WAIT_MS 100 3084 3085 #define WCN6855_2_0_RAM_VERSION_GF 0x400c1200 3086 #define WCN6855_2_1_RAM_VERSION_GF 0x400c1211 3087 3088 struct qca_version { 3089 __le32 rom_version; 3090 __le32 patch_version; 3091 __le32 ram_version; 3092 __u8 chip_id; 3093 __u8 platform_id; 3094 __le16 flag; 3095 __u8 reserved[4]; 3096 } __packed; 3097 3098 struct qca_rampatch_version { 3099 __le16 rom_version_high; 3100 __le16 rom_version_low; 3101 __le16 patch_version; 3102 } __packed; 3103 3104 struct qca_device_info { 3105 u32 rom_version; 3106 u8 rampatch_hdr; /* length of header in rampatch */ 3107 u8 nvm_hdr; /* length of header in NVM */ 3108 u8 ver_offset; /* offset of version structure in rampatch */ 3109 }; 3110 3111 static const struct qca_device_info qca_devices_table[] = { 3112 { 0x00000100, 20, 4, 8 }, /* Rome 1.0 */ 3113 { 0x00000101, 20, 4, 8 }, /* Rome 1.1 */ 3114 { 0x00000200, 28, 4, 16 }, /* Rome 2.0 */ 3115 { 0x00000201, 28, 4, 16 }, /* Rome 2.1 */ 3116 { 0x00000300, 28, 4, 16 }, /* Rome 3.0 */ 3117 { 0x00000302, 28, 4, 16 }, /* Rome 3.2 */ 3118 { 0x00130100, 40, 4, 16 }, /* WCN6855 1.0 */ 3119 { 0x00130200, 40, 4, 16 }, /* WCN6855 2.0 */ 3120 { 0x00130201, 40, 4, 16 }, /* WCN6855 2.1 */ 3121 { 0x00190200, 40, 4, 16 }, /* WCN785x 2.0 */ 3122 }; 3123 3124 static int btusb_qca_send_vendor_req(struct usb_device *udev, u8 request, 3125 void *data, u16 size) 3126 { 3127 int pipe, err; 3128 u8 *buf; 3129 3130 buf = kmalloc(size, GFP_KERNEL); 3131 if (!buf) 3132 return -ENOMEM; 3133 3134 /* Found some of USB hosts have IOT issues with ours so that we should 3135 * not wait until HCI layer is ready. 3136 */ 3137 pipe = usb_rcvctrlpipe(udev, 0); 3138 err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN, 3139 0, 0, buf, size, USB_CTRL_SET_TIMEOUT); 3140 if (err < 0) { 3141 dev_err(&udev->dev, "Failed to access otp area (%d)", err); 3142 goto done; 3143 } 3144 3145 memcpy(data, buf, size); 3146 3147 done: 3148 kfree(buf); 3149 3150 return err; 3151 } 3152 3153 static int btusb_setup_qca_download_fw(struct hci_dev *hdev, 3154 const struct firmware *firmware, 3155 size_t hdr_size) 3156 { 3157 struct btusb_data *btdata = hci_get_drvdata(hdev); 3158 struct usb_device *udev = btdata->udev; 3159 size_t count, size, sent = 0; 3160 int pipe, len, err; 3161 u8 *buf; 3162 3163 buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL); 3164 if (!buf) 3165 return -ENOMEM; 3166 3167 count = firmware->size; 3168 3169 size = min_t(size_t, count, hdr_size); 3170 memcpy(buf, firmware->data, size); 3171 3172 /* USB patches should go down to controller through USB path 3173 * because binary format fits to go down through USB channel. 3174 * USB control path is for patching headers and USB bulk is for 3175 * patch body. 3176 */ 3177 pipe = usb_sndctrlpipe(udev, 0); 3178 err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR, 3179 0, 0, buf, size, USB_CTRL_SET_TIMEOUT); 3180 if (err < 0) { 3181 bt_dev_err(hdev, "Failed to send headers (%d)", err); 3182 goto done; 3183 } 3184 3185 sent += size; 3186 count -= size; 3187 3188 /* ep2 need time to switch from function acl to function dfu, 3189 * so we add 20ms delay here. 3190 */ 3191 msleep(20); 3192 3193 while (count) { 3194 size = min_t(size_t, count, QCA_DFU_PACKET_LEN); 3195 3196 memcpy(buf, firmware->data + sent, size); 3197 3198 pipe = usb_sndbulkpipe(udev, 0x02); 3199 err = usb_bulk_msg(udev, pipe, buf, size, &len, 3200 QCA_DFU_TIMEOUT); 3201 if (err < 0) { 3202 bt_dev_err(hdev, "Failed to send body at %zd of %zd (%d)", 3203 sent, firmware->size, err); 3204 break; 3205 } 3206 3207 if (size != len) { 3208 bt_dev_err(hdev, "Failed to get bulk buffer"); 3209 err = -EILSEQ; 3210 break; 3211 } 3212 3213 sent += size; 3214 count -= size; 3215 } 3216 3217 done: 3218 kfree(buf); 3219 return err; 3220 } 3221 3222 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev, 3223 struct qca_version *ver, 3224 const struct qca_device_info *info) 3225 { 3226 struct qca_rampatch_version *rver; 3227 const struct firmware *fw; 3228 u32 ver_rom, ver_patch, rver_rom; 3229 u16 rver_rom_low, rver_rom_high, rver_patch; 3230 char fwname[64]; 3231 int err; 3232 3233 ver_rom = le32_to_cpu(ver->rom_version); 3234 ver_patch = le32_to_cpu(ver->patch_version); 3235 3236 snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom); 3237 3238 err = request_firmware(&fw, fwname, &hdev->dev); 3239 if (err) { 3240 bt_dev_err(hdev, "failed to request rampatch file: %s (%d)", 3241 fwname, err); 3242 return err; 3243 } 3244 3245 bt_dev_info(hdev, "using rampatch file: %s", fwname); 3246 3247 rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset); 3248 rver_rom_low = le16_to_cpu(rver->rom_version_low); 3249 rver_patch = le16_to_cpu(rver->patch_version); 3250 3251 if (ver_rom & ~0xffffU) { 3252 rver_rom_high = le16_to_cpu(rver->rom_version_high); 3253 rver_rom = le32_to_cpu(rver_rom_high << 16 | rver_rom_low); 3254 } else { 3255 rver_rom = rver_rom_low; 3256 } 3257 3258 bt_dev_info(hdev, "QCA: patch rome 0x%x build 0x%x, " 3259 "firmware rome 0x%x build 0x%x", 3260 rver_rom, rver_patch, ver_rom, ver_patch); 3261 3262 if (rver_rom != ver_rom || rver_patch <= ver_patch) { 3263 bt_dev_err(hdev, "rampatch file version did not match with firmware"); 3264 err = -EINVAL; 3265 goto done; 3266 } 3267 3268 err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr); 3269 3270 done: 3271 release_firmware(fw); 3272 3273 return err; 3274 } 3275 3276 static void btusb_generate_qca_nvm_name(char *fwname, size_t max_size, 3277 const struct qca_version *ver) 3278 { 3279 u32 rom_version = le32_to_cpu(ver->rom_version); 3280 u16 flag = le16_to_cpu(ver->flag); 3281 3282 if (((flag >> 8) & 0xff) == QCA_FLAG_MULTI_NVM) { 3283 /* The board_id should be split into two bytes 3284 * The 1st byte is chip ID, and the 2nd byte is platform ID 3285 * For example, board ID 0x010A, 0x01 is platform ID. 0x0A is chip ID 3286 * we have several platforms, and platform IDs are continuously added 3287 * Platform ID: 3288 * 0x00 is for Mobile 3289 * 0x01 is for X86 3290 * 0x02 is for Automotive 3291 * 0x03 is for Consumer electronic 3292 */ 3293 u16 board_id = (ver->chip_id << 8) + ver->platform_id; 3294 const char *variant; 3295 3296 switch (le32_to_cpu(ver->ram_version)) { 3297 case WCN6855_2_0_RAM_VERSION_GF: 3298 case WCN6855_2_1_RAM_VERSION_GF: 3299 variant = "_gf"; 3300 break; 3301 default: 3302 variant = ""; 3303 break; 3304 } 3305 3306 if (board_id == 0) { 3307 snprintf(fwname, max_size, "qca/nvm_usb_%08x%s.bin", 3308 rom_version, variant); 3309 } else { 3310 snprintf(fwname, max_size, "qca/nvm_usb_%08x%s_%04x.bin", 3311 rom_version, variant, board_id); 3312 } 3313 } else { 3314 snprintf(fwname, max_size, "qca/nvm_usb_%08x.bin", 3315 rom_version); 3316 } 3317 3318 } 3319 3320 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev, 3321 struct qca_version *ver, 3322 const struct qca_device_info *info) 3323 { 3324 const struct firmware *fw; 3325 char fwname[64]; 3326 int err; 3327 3328 btusb_generate_qca_nvm_name(fwname, sizeof(fwname), ver); 3329 3330 err = request_firmware(&fw, fwname, &hdev->dev); 3331 if (err) { 3332 bt_dev_err(hdev, "failed to request NVM file: %s (%d)", 3333 fwname, err); 3334 return err; 3335 } 3336 3337 bt_dev_info(hdev, "using NVM file: %s", fwname); 3338 3339 err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr); 3340 3341 release_firmware(fw); 3342 3343 return err; 3344 } 3345 3346 /* identify the ROM version and check whether patches are needed */ 3347 static bool btusb_qca_need_patch(struct usb_device *udev) 3348 { 3349 struct qca_version ver; 3350 3351 if (btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver, 3352 sizeof(ver)) < 0) 3353 return false; 3354 /* only low ROM versions need patches */ 3355 return !(le32_to_cpu(ver.rom_version) & ~0xffffU); 3356 } 3357 3358 static int btusb_setup_qca(struct hci_dev *hdev) 3359 { 3360 struct btusb_data *btdata = hci_get_drvdata(hdev); 3361 struct usb_device *udev = btdata->udev; 3362 const struct qca_device_info *info = NULL; 3363 struct qca_version ver; 3364 u32 ver_rom; 3365 u8 status; 3366 int i, err; 3367 3368 err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver, 3369 sizeof(ver)); 3370 if (err < 0) 3371 return err; 3372 3373 ver_rom = le32_to_cpu(ver.rom_version); 3374 3375 for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) { 3376 if (ver_rom == qca_devices_table[i].rom_version) 3377 info = &qca_devices_table[i]; 3378 } 3379 if (!info) { 3380 /* If the rom_version is not matched in the qca_devices_table 3381 * and the high ROM version is not zero, we assume this chip no 3382 * need to load the rampatch and nvm. 3383 */ 3384 if (ver_rom & ~0xffffU) 3385 return 0; 3386 3387 bt_dev_err(hdev, "don't support firmware rome 0x%x", ver_rom); 3388 return -ENODEV; 3389 } 3390 3391 err = btusb_qca_send_vendor_req(udev, QCA_CHECK_STATUS, &status, 3392 sizeof(status)); 3393 if (err < 0) 3394 return err; 3395 3396 if (!(status & QCA_PATCH_UPDATED)) { 3397 err = btusb_setup_qca_load_rampatch(hdev, &ver, info); 3398 if (err < 0) 3399 return err; 3400 } 3401 3402 err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver, 3403 sizeof(ver)); 3404 if (err < 0) 3405 return err; 3406 3407 if (!(status & QCA_SYSCFG_UPDATED)) { 3408 err = btusb_setup_qca_load_nvm(hdev, &ver, info); 3409 if (err < 0) 3410 return err; 3411 3412 /* WCN6855 2.1 and later will reset to apply firmware downloaded here, so 3413 * wait ~100ms for reset Done then go ahead, otherwise, it maybe 3414 * cause potential enable failure. 3415 */ 3416 if (info->rom_version >= 0x00130201) 3417 msleep(QCA_BT_RESET_WAIT_MS); 3418 } 3419 3420 /* Mark HCI_OP_ENHANCED_SETUP_SYNC_CONN as broken as it doesn't seem to 3421 * work with the likes of HSP/HFP mSBC. 3422 */ 3423 set_bit(HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN, &hdev->quirks); 3424 3425 return 0; 3426 } 3427 3428 static inline int __set_diag_interface(struct hci_dev *hdev) 3429 { 3430 struct btusb_data *data = hci_get_drvdata(hdev); 3431 struct usb_interface *intf = data->diag; 3432 int i; 3433 3434 if (!data->diag) 3435 return -ENODEV; 3436 3437 data->diag_tx_ep = NULL; 3438 data->diag_rx_ep = NULL; 3439 3440 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { 3441 struct usb_endpoint_descriptor *ep_desc; 3442 3443 ep_desc = &intf->cur_altsetting->endpoint[i].desc; 3444 3445 if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) { 3446 data->diag_tx_ep = ep_desc; 3447 continue; 3448 } 3449 3450 if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) { 3451 data->diag_rx_ep = ep_desc; 3452 continue; 3453 } 3454 } 3455 3456 if (!data->diag_tx_ep || !data->diag_rx_ep) { 3457 bt_dev_err(hdev, "invalid diagnostic descriptors"); 3458 return -ENODEV; 3459 } 3460 3461 return 0; 3462 } 3463 3464 static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable) 3465 { 3466 struct btusb_data *data = hci_get_drvdata(hdev); 3467 struct sk_buff *skb; 3468 struct urb *urb; 3469 unsigned int pipe; 3470 3471 if (!data->diag_tx_ep) 3472 return ERR_PTR(-ENODEV); 3473 3474 urb = usb_alloc_urb(0, GFP_KERNEL); 3475 if (!urb) 3476 return ERR_PTR(-ENOMEM); 3477 3478 skb = bt_skb_alloc(2, GFP_KERNEL); 3479 if (!skb) { 3480 usb_free_urb(urb); 3481 return ERR_PTR(-ENOMEM); 3482 } 3483 3484 skb_put_u8(skb, 0xf0); 3485 skb_put_u8(skb, enable); 3486 3487 pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress); 3488 3489 usb_fill_bulk_urb(urb, data->udev, pipe, 3490 skb->data, skb->len, btusb_tx_complete, skb); 3491 3492 skb->dev = (void *)hdev; 3493 3494 return urb; 3495 } 3496 3497 static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable) 3498 { 3499 struct btusb_data *data = hci_get_drvdata(hdev); 3500 struct urb *urb; 3501 3502 if (!data->diag) 3503 return -ENODEV; 3504 3505 if (!test_bit(HCI_RUNNING, &hdev->flags)) 3506 return -ENETDOWN; 3507 3508 urb = alloc_diag_urb(hdev, enable); 3509 if (IS_ERR(urb)) 3510 return PTR_ERR(urb); 3511 3512 return submit_or_queue_tx_urb(hdev, urb); 3513 } 3514 3515 #ifdef CONFIG_PM 3516 static irqreturn_t btusb_oob_wake_handler(int irq, void *priv) 3517 { 3518 struct btusb_data *data = priv; 3519 3520 pm_wakeup_event(&data->udev->dev, 0); 3521 pm_system_wakeup(); 3522 3523 /* Disable only if not already disabled (keep it balanced) */ 3524 if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) { 3525 disable_irq_nosync(irq); 3526 disable_irq_wake(irq); 3527 } 3528 return IRQ_HANDLED; 3529 } 3530 3531 static const struct of_device_id btusb_match_table[] = { 3532 { .compatible = "usb1286,204e" }, 3533 { .compatible = "usbcf3,e300" }, /* QCA6174A */ 3534 { .compatible = "usb4ca,301a" }, /* QCA6174A (Lite-On) */ 3535 { } 3536 }; 3537 MODULE_DEVICE_TABLE(of, btusb_match_table); 3538 3539 /* Use an oob wakeup pin? */ 3540 static int btusb_config_oob_wake(struct hci_dev *hdev) 3541 { 3542 struct btusb_data *data = hci_get_drvdata(hdev); 3543 struct device *dev = &data->udev->dev; 3544 int irq, ret; 3545 3546 clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags); 3547 3548 if (!of_match_device(btusb_match_table, dev)) 3549 return 0; 3550 3551 /* Move on if no IRQ specified */ 3552 irq = of_irq_get_byname(dev->of_node, "wakeup"); 3553 if (irq <= 0) { 3554 bt_dev_dbg(hdev, "%s: no OOB Wakeup IRQ in DT", __func__); 3555 return 0; 3556 } 3557 3558 irq_set_status_flags(irq, IRQ_NOAUTOEN); 3559 ret = devm_request_irq(&hdev->dev, irq, btusb_oob_wake_handler, 3560 0, "OOB Wake-on-BT", data); 3561 if (ret) { 3562 bt_dev_err(hdev, "%s: IRQ request failed", __func__); 3563 return ret; 3564 } 3565 3566 ret = device_init_wakeup(dev, true); 3567 if (ret) { 3568 bt_dev_err(hdev, "%s: failed to init_wakeup", __func__); 3569 return ret; 3570 } 3571 3572 data->oob_wake_irq = irq; 3573 bt_dev_info(hdev, "OOB Wake-on-BT configured at IRQ %u", irq); 3574 return 0; 3575 } 3576 #endif 3577 3578 static void btusb_check_needs_reset_resume(struct usb_interface *intf) 3579 { 3580 if (dmi_check_system(btusb_needs_reset_resume_table)) 3581 interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME; 3582 } 3583 3584 static bool btusb_wakeup(struct hci_dev *hdev) 3585 { 3586 struct btusb_data *data = hci_get_drvdata(hdev); 3587 3588 return device_may_wakeup(&data->udev->dev); 3589 } 3590 3591 static int btusb_shutdown_qca(struct hci_dev *hdev) 3592 { 3593 struct sk_buff *skb; 3594 3595 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT); 3596 if (IS_ERR(skb)) { 3597 bt_dev_err(hdev, "HCI reset during shutdown failed"); 3598 return PTR_ERR(skb); 3599 } 3600 kfree_skb(skb); 3601 3602 return 0; 3603 } 3604 3605 static ssize_t force_poll_sync_read(struct file *file, char __user *user_buf, 3606 size_t count, loff_t *ppos) 3607 { 3608 struct btusb_data *data = file->private_data; 3609 char buf[3]; 3610 3611 buf[0] = data->poll_sync ? 'Y' : 'N'; 3612 buf[1] = '\n'; 3613 buf[2] = '\0'; 3614 return simple_read_from_buffer(user_buf, count, ppos, buf, 2); 3615 } 3616 3617 static ssize_t force_poll_sync_write(struct file *file, 3618 const char __user *user_buf, 3619 size_t count, loff_t *ppos) 3620 { 3621 struct btusb_data *data = file->private_data; 3622 bool enable; 3623 int err; 3624 3625 err = kstrtobool_from_user(user_buf, count, &enable); 3626 if (err) 3627 return err; 3628 3629 /* Only allow changes while the adapter is down */ 3630 if (test_bit(HCI_UP, &data->hdev->flags)) 3631 return -EPERM; 3632 3633 if (data->poll_sync == enable) 3634 return -EALREADY; 3635 3636 data->poll_sync = enable; 3637 3638 return count; 3639 } 3640 3641 static const struct file_operations force_poll_sync_fops = { 3642 .open = simple_open, 3643 .read = force_poll_sync_read, 3644 .write = force_poll_sync_write, 3645 .llseek = default_llseek, 3646 }; 3647 3648 static int btusb_probe(struct usb_interface *intf, 3649 const struct usb_device_id *id) 3650 { 3651 struct usb_endpoint_descriptor *ep_desc; 3652 struct gpio_desc *reset_gpio; 3653 struct btusb_data *data; 3654 struct hci_dev *hdev; 3655 unsigned ifnum_base; 3656 int i, err, priv_size; 3657 3658 BT_DBG("intf %p id %p", intf, id); 3659 3660 /* interface numbers are hardcoded in the spec */ 3661 if (intf->cur_altsetting->desc.bInterfaceNumber != 0) { 3662 if (!(id->driver_info & BTUSB_IFNUM_2)) 3663 return -ENODEV; 3664 if (intf->cur_altsetting->desc.bInterfaceNumber != 2) 3665 return -ENODEV; 3666 } 3667 3668 ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber; 3669 3670 if (!id->driver_info) { 3671 const struct usb_device_id *match; 3672 3673 match = usb_match_id(intf, blacklist_table); 3674 if (match) 3675 id = match; 3676 } 3677 3678 if (id->driver_info == BTUSB_IGNORE) 3679 return -ENODEV; 3680 3681 if (id->driver_info & BTUSB_ATH3012) { 3682 struct usb_device *udev = interface_to_usbdev(intf); 3683 3684 /* Old firmware would otherwise let ath3k driver load 3685 * patch and sysconfig files 3686 */ 3687 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001 && 3688 !btusb_qca_need_patch(udev)) 3689 return -ENODEV; 3690 } 3691 3692 data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL); 3693 if (!data) 3694 return -ENOMEM; 3695 3696 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { 3697 ep_desc = &intf->cur_altsetting->endpoint[i].desc; 3698 3699 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) { 3700 data->intr_ep = ep_desc; 3701 continue; 3702 } 3703 3704 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) { 3705 data->bulk_tx_ep = ep_desc; 3706 continue; 3707 } 3708 3709 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) { 3710 data->bulk_rx_ep = ep_desc; 3711 continue; 3712 } 3713 } 3714 3715 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) 3716 return -ENODEV; 3717 3718 if (id->driver_info & BTUSB_AMP) { 3719 data->cmdreq_type = USB_TYPE_CLASS | 0x01; 3720 data->cmdreq = 0x2b; 3721 } else { 3722 data->cmdreq_type = USB_TYPE_CLASS; 3723 data->cmdreq = 0x00; 3724 } 3725 3726 data->udev = interface_to_usbdev(intf); 3727 data->intf = intf; 3728 3729 INIT_WORK(&data->work, btusb_work); 3730 INIT_WORK(&data->waker, btusb_waker); 3731 INIT_DELAYED_WORK(&data->rx_work, btusb_rx_work); 3732 3733 skb_queue_head_init(&data->acl_q); 3734 3735 init_usb_anchor(&data->deferred); 3736 init_usb_anchor(&data->tx_anchor); 3737 spin_lock_init(&data->txlock); 3738 3739 init_usb_anchor(&data->intr_anchor); 3740 init_usb_anchor(&data->bulk_anchor); 3741 init_usb_anchor(&data->isoc_anchor); 3742 init_usb_anchor(&data->diag_anchor); 3743 init_usb_anchor(&data->ctrl_anchor); 3744 spin_lock_init(&data->rxlock); 3745 3746 priv_size = 0; 3747 3748 data->recv_event = hci_recv_frame; 3749 data->recv_bulk = btusb_recv_bulk; 3750 3751 if (id->driver_info & BTUSB_INTEL_COMBINED) { 3752 /* Allocate extra space for Intel device */ 3753 priv_size += sizeof(struct btintel_data); 3754 3755 /* Override the rx handlers */ 3756 data->recv_event = btusb_recv_event_intel; 3757 data->recv_bulk = btusb_recv_bulk_intel; 3758 } 3759 3760 data->recv_acl = hci_recv_frame; 3761 3762 hdev = hci_alloc_dev_priv(priv_size); 3763 if (!hdev) 3764 return -ENOMEM; 3765 3766 hdev->bus = HCI_USB; 3767 hci_set_drvdata(hdev, data); 3768 3769 if (id->driver_info & BTUSB_AMP) 3770 hdev->dev_type = HCI_AMP; 3771 else 3772 hdev->dev_type = HCI_PRIMARY; 3773 3774 data->hdev = hdev; 3775 3776 SET_HCIDEV_DEV(hdev, &intf->dev); 3777 3778 reset_gpio = gpiod_get_optional(&data->udev->dev, "reset", 3779 GPIOD_OUT_LOW); 3780 if (IS_ERR(reset_gpio)) { 3781 err = PTR_ERR(reset_gpio); 3782 goto out_free_dev; 3783 } else if (reset_gpio) { 3784 data->reset_gpio = reset_gpio; 3785 } 3786 3787 hdev->open = btusb_open; 3788 hdev->close = btusb_close; 3789 hdev->flush = btusb_flush; 3790 hdev->send = btusb_send_frame; 3791 hdev->notify = btusb_notify; 3792 hdev->wakeup = btusb_wakeup; 3793 3794 #ifdef CONFIG_PM 3795 err = btusb_config_oob_wake(hdev); 3796 if (err) 3797 goto out_free_dev; 3798 3799 /* Marvell devices may need a specific chip configuration */ 3800 if (id->driver_info & BTUSB_MARVELL && data->oob_wake_irq) { 3801 err = marvell_config_oob_wake(hdev); 3802 if (err) 3803 goto out_free_dev; 3804 } 3805 #endif 3806 if (id->driver_info & BTUSB_CW6622) 3807 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks); 3808 3809 if (id->driver_info & BTUSB_BCM2045) 3810 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks); 3811 3812 if (id->driver_info & BTUSB_BCM92035) 3813 hdev->setup = btusb_setup_bcm92035; 3814 3815 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) && 3816 (id->driver_info & BTUSB_BCM_PATCHRAM)) { 3817 hdev->manufacturer = 15; 3818 hdev->setup = btbcm_setup_patchram; 3819 hdev->set_diag = btusb_bcm_set_diag; 3820 hdev->set_bdaddr = btbcm_set_bdaddr; 3821 3822 /* Broadcom LM_DIAG Interface numbers are hardcoded */ 3823 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2); 3824 } 3825 3826 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) && 3827 (id->driver_info & BTUSB_BCM_APPLE)) { 3828 hdev->manufacturer = 15; 3829 hdev->setup = btbcm_setup_apple; 3830 hdev->set_diag = btusb_bcm_set_diag; 3831 3832 /* Broadcom LM_DIAG Interface numbers are hardcoded */ 3833 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2); 3834 } 3835 3836 /* Combined Intel Device setup to support multiple setup routine */ 3837 if (id->driver_info & BTUSB_INTEL_COMBINED) { 3838 err = btintel_configure_setup(hdev); 3839 if (err) 3840 goto out_free_dev; 3841 3842 /* Transport specific configuration */ 3843 hdev->send = btusb_send_frame_intel; 3844 hdev->cmd_timeout = btusb_intel_cmd_timeout; 3845 3846 if (id->driver_info & BTUSB_INTEL_NO_WBS_SUPPORT) 3847 btintel_set_flag(hdev, INTEL_ROM_LEGACY_NO_WBS_SUPPORT); 3848 3849 if (id->driver_info & BTUSB_INTEL_BROKEN_INITIAL_NCMD) 3850 btintel_set_flag(hdev, INTEL_BROKEN_INITIAL_NCMD); 3851 3852 if (id->driver_info & BTUSB_INTEL_BROKEN_SHUTDOWN_LED) 3853 btintel_set_flag(hdev, INTEL_BROKEN_SHUTDOWN_LED); 3854 } 3855 3856 if (id->driver_info & BTUSB_MARVELL) 3857 hdev->set_bdaddr = btusb_set_bdaddr_marvell; 3858 3859 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_MTK) && 3860 (id->driver_info & BTUSB_MEDIATEK)) { 3861 hdev->setup = btusb_mtk_setup; 3862 hdev->shutdown = btusb_mtk_shutdown; 3863 hdev->manufacturer = 70; 3864 hdev->cmd_timeout = btusb_mtk_cmd_timeout; 3865 hdev->set_bdaddr = btmtk_set_bdaddr; 3866 set_bit(HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN, &hdev->quirks); 3867 set_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks); 3868 data->recv_acl = btusb_recv_acl_mtk; 3869 } 3870 3871 if (id->driver_info & BTUSB_SWAVE) { 3872 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks); 3873 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks); 3874 } 3875 3876 if (id->driver_info & BTUSB_INTEL_BOOT) { 3877 hdev->manufacturer = 2; 3878 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks); 3879 } 3880 3881 if (id->driver_info & BTUSB_ATH3012) { 3882 data->setup_on_usb = btusb_setup_qca; 3883 hdev->set_bdaddr = btusb_set_bdaddr_ath3012; 3884 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); 3885 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks); 3886 } 3887 3888 if (id->driver_info & BTUSB_QCA_ROME) { 3889 data->setup_on_usb = btusb_setup_qca; 3890 hdev->set_bdaddr = btusb_set_bdaddr_ath3012; 3891 hdev->cmd_timeout = btusb_qca_cmd_timeout; 3892 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); 3893 btusb_check_needs_reset_resume(intf); 3894 } 3895 3896 if (id->driver_info & BTUSB_QCA_WCN6855) { 3897 data->setup_on_usb = btusb_setup_qca; 3898 hdev->shutdown = btusb_shutdown_qca; 3899 hdev->set_bdaddr = btusb_set_bdaddr_wcn6855; 3900 hdev->cmd_timeout = btusb_qca_cmd_timeout; 3901 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); 3902 hci_set_msft_opcode(hdev, 0xFD70); 3903 } 3904 3905 if (id->driver_info & BTUSB_AMP) { 3906 /* AMP controllers do not support SCO packets */ 3907 data->isoc = NULL; 3908 } else { 3909 /* Interface orders are hardcoded in the specification */ 3910 data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1); 3911 data->isoc_ifnum = ifnum_base + 1; 3912 } 3913 3914 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_RTL) && 3915 (id->driver_info & BTUSB_REALTEK)) { 3916 hdev->setup = btrtl_setup_realtek; 3917 hdev->shutdown = btrtl_shutdown_realtek; 3918 hdev->cmd_timeout = btusb_rtl_cmd_timeout; 3919 3920 /* Realtek devices need to set remote wakeup on auto-suspend */ 3921 set_bit(BTUSB_WAKEUP_AUTOSUSPEND, &data->flags); 3922 set_bit(BTUSB_USE_ALT3_FOR_WBS, &data->flags); 3923 } 3924 3925 if (!reset) 3926 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); 3927 3928 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) { 3929 if (!disable_scofix) 3930 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks); 3931 } 3932 3933 if (id->driver_info & BTUSB_BROKEN_ISOC) 3934 data->isoc = NULL; 3935 3936 if (id->driver_info & BTUSB_WIDEBAND_SPEECH) 3937 set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED, &hdev->quirks); 3938 3939 if (id->driver_info & BTUSB_VALID_LE_STATES) 3940 set_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks); 3941 3942 if (id->driver_info & BTUSB_DIGIANSWER) { 3943 data->cmdreq_type = USB_TYPE_VENDOR; 3944 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); 3945 } 3946 3947 if (id->driver_info & BTUSB_CSR) { 3948 struct usb_device *udev = data->udev; 3949 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice); 3950 3951 /* Old firmware would otherwise execute USB reset */ 3952 if (bcdDevice < 0x117) 3953 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); 3954 3955 /* This must be set first in case we disable it for fakes */ 3956 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); 3957 3958 /* Fake CSR devices with broken commands */ 3959 if (le16_to_cpu(udev->descriptor.idVendor) == 0x0a12 && 3960 le16_to_cpu(udev->descriptor.idProduct) == 0x0001) 3961 hdev->setup = btusb_setup_csr; 3962 } 3963 3964 if (id->driver_info & BTUSB_SNIFFER) { 3965 struct usb_device *udev = data->udev; 3966 3967 /* New sniffer firmware has crippled HCI interface */ 3968 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997) 3969 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks); 3970 } 3971 3972 if (id->driver_info & BTUSB_INTEL_BOOT) { 3973 /* A bug in the bootloader causes that interrupt interface is 3974 * only enabled after receiving SetInterface(0, AltSetting=0). 3975 */ 3976 err = usb_set_interface(data->udev, 0, 0); 3977 if (err < 0) { 3978 BT_ERR("failed to set interface 0, alt 0 %d", err); 3979 goto out_free_dev; 3980 } 3981 } 3982 3983 if (data->isoc) { 3984 err = usb_driver_claim_interface(&btusb_driver, 3985 data->isoc, data); 3986 if (err < 0) 3987 goto out_free_dev; 3988 } 3989 3990 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) && data->diag) { 3991 if (!usb_driver_claim_interface(&btusb_driver, 3992 data->diag, data)) 3993 __set_diag_interface(hdev); 3994 else 3995 data->diag = NULL; 3996 } 3997 3998 if (enable_autosuspend) 3999 usb_enable_autosuspend(data->udev); 4000 4001 err = hci_register_dev(hdev); 4002 if (err < 0) 4003 goto out_free_dev; 4004 4005 usb_set_intfdata(intf, data); 4006 4007 debugfs_create_file("force_poll_sync", 0644, hdev->debugfs, data, 4008 &force_poll_sync_fops); 4009 4010 return 0; 4011 4012 out_free_dev: 4013 if (data->reset_gpio) 4014 gpiod_put(data->reset_gpio); 4015 hci_free_dev(hdev); 4016 return err; 4017 } 4018 4019 static void btusb_disconnect(struct usb_interface *intf) 4020 { 4021 struct btusb_data *data = usb_get_intfdata(intf); 4022 struct hci_dev *hdev; 4023 4024 BT_DBG("intf %p", intf); 4025 4026 if (!data) 4027 return; 4028 4029 hdev = data->hdev; 4030 usb_set_intfdata(data->intf, NULL); 4031 4032 if (data->isoc) 4033 usb_set_intfdata(data->isoc, NULL); 4034 4035 if (data->diag) 4036 usb_set_intfdata(data->diag, NULL); 4037 4038 hci_unregister_dev(hdev); 4039 4040 if (intf == data->intf) { 4041 if (data->isoc) 4042 usb_driver_release_interface(&btusb_driver, data->isoc); 4043 if (data->diag) 4044 usb_driver_release_interface(&btusb_driver, data->diag); 4045 } else if (intf == data->isoc) { 4046 if (data->diag) 4047 usb_driver_release_interface(&btusb_driver, data->diag); 4048 usb_driver_release_interface(&btusb_driver, data->intf); 4049 } else if (intf == data->diag) { 4050 usb_driver_release_interface(&btusb_driver, data->intf); 4051 if (data->isoc) 4052 usb_driver_release_interface(&btusb_driver, data->isoc); 4053 } 4054 4055 if (data->oob_wake_irq) 4056 device_init_wakeup(&data->udev->dev, false); 4057 4058 if (data->reset_gpio) 4059 gpiod_put(data->reset_gpio); 4060 4061 hci_free_dev(hdev); 4062 } 4063 4064 #ifdef CONFIG_PM 4065 static int btusb_suspend(struct usb_interface *intf, pm_message_t message) 4066 { 4067 struct btusb_data *data = usb_get_intfdata(intf); 4068 4069 BT_DBG("intf %p", intf); 4070 4071 if (data->suspend_count++) 4072 return 0; 4073 4074 spin_lock_irq(&data->txlock); 4075 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) { 4076 set_bit(BTUSB_SUSPENDING, &data->flags); 4077 spin_unlock_irq(&data->txlock); 4078 } else { 4079 spin_unlock_irq(&data->txlock); 4080 data->suspend_count--; 4081 return -EBUSY; 4082 } 4083 4084 cancel_work_sync(&data->work); 4085 4086 btusb_stop_traffic(data); 4087 usb_kill_anchored_urbs(&data->tx_anchor); 4088 4089 if (data->oob_wake_irq && device_may_wakeup(&data->udev->dev)) { 4090 set_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags); 4091 enable_irq_wake(data->oob_wake_irq); 4092 enable_irq(data->oob_wake_irq); 4093 } 4094 4095 /* For global suspend, Realtek devices lose the loaded fw 4096 * in them. But for autosuspend, firmware should remain. 4097 * Actually, it depends on whether the usb host sends 4098 * set feature (enable wakeup) or not. 4099 */ 4100 if (test_bit(BTUSB_WAKEUP_AUTOSUSPEND, &data->flags)) { 4101 if (PMSG_IS_AUTO(message) && 4102 device_can_wakeup(&data->udev->dev)) 4103 data->udev->do_remote_wakeup = 1; 4104 else if (!PMSG_IS_AUTO(message) && 4105 !device_may_wakeup(&data->udev->dev)) { 4106 data->udev->do_remote_wakeup = 0; 4107 data->udev->reset_resume = 1; 4108 } 4109 } 4110 4111 return 0; 4112 } 4113 4114 static void play_deferred(struct btusb_data *data) 4115 { 4116 struct urb *urb; 4117 int err; 4118 4119 while ((urb = usb_get_from_anchor(&data->deferred))) { 4120 usb_anchor_urb(urb, &data->tx_anchor); 4121 4122 err = usb_submit_urb(urb, GFP_ATOMIC); 4123 if (err < 0) { 4124 if (err != -EPERM && err != -ENODEV) 4125 BT_ERR("%s urb %p submission failed (%d)", 4126 data->hdev->name, urb, -err); 4127 kfree(urb->setup_packet); 4128 usb_unanchor_urb(urb); 4129 usb_free_urb(urb); 4130 break; 4131 } 4132 4133 data->tx_in_flight++; 4134 usb_free_urb(urb); 4135 } 4136 4137 /* Cleanup the rest deferred urbs. */ 4138 while ((urb = usb_get_from_anchor(&data->deferred))) { 4139 kfree(urb->setup_packet); 4140 usb_free_urb(urb); 4141 } 4142 } 4143 4144 static int btusb_resume(struct usb_interface *intf) 4145 { 4146 struct btusb_data *data = usb_get_intfdata(intf); 4147 struct hci_dev *hdev = data->hdev; 4148 int err = 0; 4149 4150 BT_DBG("intf %p", intf); 4151 4152 if (--data->suspend_count) 4153 return 0; 4154 4155 /* Disable only if not already disabled (keep it balanced) */ 4156 if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) { 4157 disable_irq(data->oob_wake_irq); 4158 disable_irq_wake(data->oob_wake_irq); 4159 } 4160 4161 if (!test_bit(HCI_RUNNING, &hdev->flags)) 4162 goto done; 4163 4164 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) { 4165 err = btusb_submit_intr_urb(hdev, GFP_NOIO); 4166 if (err < 0) { 4167 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 4168 goto failed; 4169 } 4170 } 4171 4172 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) { 4173 err = btusb_submit_bulk_urb(hdev, GFP_NOIO); 4174 if (err < 0) { 4175 clear_bit(BTUSB_BULK_RUNNING, &data->flags); 4176 goto failed; 4177 } 4178 4179 btusb_submit_bulk_urb(hdev, GFP_NOIO); 4180 } 4181 4182 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) { 4183 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0) 4184 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 4185 else 4186 btusb_submit_isoc_urb(hdev, GFP_NOIO); 4187 } 4188 4189 spin_lock_irq(&data->txlock); 4190 play_deferred(data); 4191 clear_bit(BTUSB_SUSPENDING, &data->flags); 4192 spin_unlock_irq(&data->txlock); 4193 schedule_work(&data->work); 4194 4195 return 0; 4196 4197 failed: 4198 usb_scuttle_anchored_urbs(&data->deferred); 4199 done: 4200 spin_lock_irq(&data->txlock); 4201 clear_bit(BTUSB_SUSPENDING, &data->flags); 4202 spin_unlock_irq(&data->txlock); 4203 4204 return err; 4205 } 4206 #endif 4207 4208 static struct usb_driver btusb_driver = { 4209 .name = "btusb", 4210 .probe = btusb_probe, 4211 .disconnect = btusb_disconnect, 4212 #ifdef CONFIG_PM 4213 .suspend = btusb_suspend, 4214 .resume = btusb_resume, 4215 #endif 4216 .id_table = btusb_table, 4217 .supports_autosuspend = 1, 4218 .disable_hub_initiated_lpm = 1, 4219 }; 4220 4221 module_usb_driver(btusb_driver); 4222 4223 module_param(disable_scofix, bool, 0644); 4224 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size"); 4225 4226 module_param(force_scofix, bool, 0644); 4227 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size"); 4228 4229 module_param(enable_autosuspend, bool, 0644); 4230 MODULE_PARM_DESC(enable_autosuspend, "Enable USB autosuspend by default"); 4231 4232 module_param(reset, bool, 0644); 4233 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization"); 4234 4235 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); 4236 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION); 4237 MODULE_VERSION(VERSION); 4238 MODULE_LICENSE("GPL"); 4239