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 /* Broadcom BCM2035 */ 321 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 }, 322 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU }, 323 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU }, 324 325 /* Broadcom BCM2045 */ 326 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU }, 327 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU }, 328 329 /* IBM/Lenovo ThinkPad with Broadcom chip */ 330 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU }, 331 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU }, 332 333 /* HP laptop with Broadcom chip */ 334 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU }, 335 336 /* Dell laptop with Broadcom chip */ 337 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU }, 338 339 /* Dell Wireless 370 and 410 devices */ 340 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU }, 341 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU }, 342 343 /* Belkin F8T012 and F8T013 devices */ 344 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU }, 345 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU }, 346 347 /* Asus WL-BTD202 device */ 348 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU }, 349 350 /* Kensington Bluetooth USB adapter */ 351 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU }, 352 353 /* RTX Telecom based adapters with buggy SCO support */ 354 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC }, 355 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC }, 356 357 /* CONWISE Technology based adapters with buggy SCO support */ 358 { USB_DEVICE(0x0e5e, 0x6622), 359 .driver_info = BTUSB_BROKEN_ISOC | BTUSB_CW6622}, 360 361 /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */ 362 { USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE }, 363 364 /* Digianswer devices */ 365 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER }, 366 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE }, 367 368 /* CSR BlueCore Bluetooth Sniffer */ 369 { USB_DEVICE(0x0a12, 0x0002), 370 .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC }, 371 372 /* Frontline ComProbe Bluetooth Sniffer */ 373 { USB_DEVICE(0x16d3, 0x0002), 374 .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC }, 375 376 /* Marvell Bluetooth devices */ 377 { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL }, 378 { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL }, 379 { USB_DEVICE(0x1286, 0x204e), .driver_info = BTUSB_MARVELL }, 380 381 /* Intel Bluetooth devices */ 382 { USB_DEVICE(0x8087, 0x0025), .driver_info = BTUSB_INTEL_COMBINED }, 383 { USB_DEVICE(0x8087, 0x0026), .driver_info = BTUSB_INTEL_COMBINED }, 384 { USB_DEVICE(0x8087, 0x0029), .driver_info = BTUSB_INTEL_COMBINED }, 385 { USB_DEVICE(0x8087, 0x0032), .driver_info = BTUSB_INTEL_COMBINED }, 386 { USB_DEVICE(0x8087, 0x0033), .driver_info = BTUSB_INTEL_COMBINED }, 387 { USB_DEVICE(0x8087, 0x0035), .driver_info = BTUSB_INTEL_COMBINED }, 388 { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR }, 389 { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL_COMBINED | 390 BTUSB_INTEL_NO_WBS_SUPPORT | 391 BTUSB_INTEL_BROKEN_INITIAL_NCMD | 392 BTUSB_INTEL_BROKEN_SHUTDOWN_LED }, 393 { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL_COMBINED | 394 BTUSB_INTEL_NO_WBS_SUPPORT | 395 BTUSB_INTEL_BROKEN_SHUTDOWN_LED }, 396 { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_COMBINED }, 397 { USB_DEVICE(0x8087, 0x0aa7), .driver_info = BTUSB_INTEL_COMBINED | 398 BTUSB_INTEL_BROKEN_SHUTDOWN_LED }, 399 { USB_DEVICE(0x8087, 0x0aaa), .driver_info = BTUSB_INTEL_COMBINED }, 400 401 /* Other Intel Bluetooth devices */ 402 { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01), 403 .driver_info = BTUSB_IGNORE }, 404 405 /* Realtek 8822CE Bluetooth devices */ 406 { USB_DEVICE(0x0bda, 0xb00c), .driver_info = BTUSB_REALTEK | 407 BTUSB_WIDEBAND_SPEECH }, 408 { USB_DEVICE(0x0bda, 0xc822), .driver_info = BTUSB_REALTEK | 409 BTUSB_WIDEBAND_SPEECH }, 410 411 /* Realtek 8852AE Bluetooth devices */ 412 { USB_DEVICE(0x0bda, 0x2852), .driver_info = BTUSB_REALTEK | 413 BTUSB_WIDEBAND_SPEECH }, 414 { USB_DEVICE(0x0bda, 0xc852), .driver_info = BTUSB_REALTEK | 415 BTUSB_WIDEBAND_SPEECH }, 416 { USB_DEVICE(0x0bda, 0x385a), .driver_info = BTUSB_REALTEK | 417 BTUSB_WIDEBAND_SPEECH }, 418 { USB_DEVICE(0x0bda, 0x4852), .driver_info = BTUSB_REALTEK | 419 BTUSB_WIDEBAND_SPEECH }, 420 { USB_DEVICE(0x04c5, 0x165c), .driver_info = BTUSB_REALTEK | 421 BTUSB_WIDEBAND_SPEECH }, 422 { USB_DEVICE(0x04ca, 0x4006), .driver_info = BTUSB_REALTEK | 423 BTUSB_WIDEBAND_SPEECH }, 424 425 /* Realtek Bluetooth devices */ 426 { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01), 427 .driver_info = BTUSB_REALTEK }, 428 429 /* MediaTek Bluetooth devices */ 430 { USB_VENDOR_AND_INTERFACE_INFO(0x0e8d, 0xe0, 0x01, 0x01), 431 .driver_info = BTUSB_MEDIATEK | 432 BTUSB_WIDEBAND_SPEECH | 433 BTUSB_VALID_LE_STATES }, 434 435 /* Additional MediaTek MT7615E Bluetooth devices */ 436 { USB_DEVICE(0x13d3, 0x3560), .driver_info = BTUSB_MEDIATEK}, 437 438 /* Additional MediaTek MT7663 Bluetooth devices */ 439 { USB_DEVICE(0x043e, 0x310c), .driver_info = BTUSB_MEDIATEK | 440 BTUSB_WIDEBAND_SPEECH | 441 BTUSB_VALID_LE_STATES }, 442 443 /* Additional MediaTek MT7668 Bluetooth devices */ 444 { USB_DEVICE(0x043e, 0x3109), .driver_info = BTUSB_MEDIATEK | 445 BTUSB_WIDEBAND_SPEECH | 446 BTUSB_VALID_LE_STATES }, 447 448 /* Additional MediaTek MT7921 Bluetooth devices */ 449 { USB_DEVICE(0x04ca, 0x3802), .driver_info = BTUSB_MEDIATEK | 450 BTUSB_WIDEBAND_SPEECH | 451 BTUSB_VALID_LE_STATES }, 452 { USB_DEVICE(0x13d3, 0x3563), .driver_info = BTUSB_MEDIATEK | 453 BTUSB_WIDEBAND_SPEECH | 454 BTUSB_VALID_LE_STATES }, 455 { USB_DEVICE(0x13d3, 0x3564), .driver_info = BTUSB_MEDIATEK | 456 BTUSB_WIDEBAND_SPEECH | 457 BTUSB_VALID_LE_STATES }, 458 { USB_DEVICE(0x13d3, 0x3567), .driver_info = BTUSB_MEDIATEK | 459 BTUSB_WIDEBAND_SPEECH | 460 BTUSB_VALID_LE_STATES }, 461 { USB_DEVICE(0x0489, 0xe0cd), .driver_info = BTUSB_MEDIATEK | 462 BTUSB_WIDEBAND_SPEECH | 463 BTUSB_VALID_LE_STATES }, 464 465 /* MediaTek MT7922A Bluetooth devices */ 466 { USB_DEVICE(0x0489, 0xe0d8), .driver_info = BTUSB_MEDIATEK | 467 BTUSB_WIDEBAND_SPEECH | 468 BTUSB_VALID_LE_STATES }, 469 { USB_DEVICE(0x0489, 0xe0d9), .driver_info = BTUSB_MEDIATEK | 470 BTUSB_WIDEBAND_SPEECH | 471 BTUSB_VALID_LE_STATES }, 472 473 /* Additional Realtek 8723AE Bluetooth devices */ 474 { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK }, 475 { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK }, 476 477 /* Additional Realtek 8723BE Bluetooth devices */ 478 { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK }, 479 { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK }, 480 { USB_DEVICE(0x04f2, 0xb49f), .driver_info = BTUSB_REALTEK }, 481 { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK }, 482 { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK }, 483 { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK }, 484 { USB_DEVICE(0x13d3, 0x3494), .driver_info = BTUSB_REALTEK }, 485 486 /* Additional Realtek 8723BU Bluetooth devices */ 487 { USB_DEVICE(0x7392, 0xa611), .driver_info = BTUSB_REALTEK }, 488 489 /* Additional Realtek 8723DE Bluetooth devices */ 490 { USB_DEVICE(0x0bda, 0xb009), .driver_info = BTUSB_REALTEK }, 491 { USB_DEVICE(0x2ff8, 0xb011), .driver_info = BTUSB_REALTEK }, 492 493 /* Additional Realtek 8761B Bluetooth devices */ 494 { USB_DEVICE(0x2357, 0x0604), .driver_info = BTUSB_REALTEK | 495 BTUSB_WIDEBAND_SPEECH }, 496 497 /* Additional Realtek 8761BU Bluetooth devices */ 498 { USB_DEVICE(0x0b05, 0x190e), .driver_info = BTUSB_REALTEK | 499 BTUSB_WIDEBAND_SPEECH }, 500 { USB_DEVICE(0x2550, 0x8761), .driver_info = BTUSB_REALTEK | 501 BTUSB_WIDEBAND_SPEECH }, 502 503 /* Additional Realtek 8821AE Bluetooth devices */ 504 { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK }, 505 { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK }, 506 { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK }, 507 { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK }, 508 { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK }, 509 510 /* Additional Realtek 8822BE Bluetooth devices */ 511 { USB_DEVICE(0x13d3, 0x3526), .driver_info = BTUSB_REALTEK }, 512 { USB_DEVICE(0x0b05, 0x185c), .driver_info = BTUSB_REALTEK }, 513 514 /* Additional Realtek 8822CE Bluetooth devices */ 515 { USB_DEVICE(0x04ca, 0x4005), .driver_info = BTUSB_REALTEK | 516 BTUSB_WIDEBAND_SPEECH }, 517 { USB_DEVICE(0x04c5, 0x161f), .driver_info = BTUSB_REALTEK | 518 BTUSB_WIDEBAND_SPEECH }, 519 { USB_DEVICE(0x0b05, 0x18ef), .driver_info = BTUSB_REALTEK | 520 BTUSB_WIDEBAND_SPEECH }, 521 { USB_DEVICE(0x13d3, 0x3548), .driver_info = BTUSB_REALTEK | 522 BTUSB_WIDEBAND_SPEECH }, 523 { USB_DEVICE(0x13d3, 0x3549), .driver_info = BTUSB_REALTEK | 524 BTUSB_WIDEBAND_SPEECH }, 525 { USB_DEVICE(0x13d3, 0x3553), .driver_info = BTUSB_REALTEK | 526 BTUSB_WIDEBAND_SPEECH }, 527 { USB_DEVICE(0x13d3, 0x3555), .driver_info = BTUSB_REALTEK | 528 BTUSB_WIDEBAND_SPEECH }, 529 { USB_DEVICE(0x2ff8, 0x3051), .driver_info = BTUSB_REALTEK | 530 BTUSB_WIDEBAND_SPEECH }, 531 { USB_DEVICE(0x1358, 0xc123), .driver_info = BTUSB_REALTEK | 532 BTUSB_WIDEBAND_SPEECH }, 533 { USB_DEVICE(0x0bda, 0xc123), .driver_info = BTUSB_REALTEK | 534 BTUSB_WIDEBAND_SPEECH }, 535 { USB_DEVICE(0x0cb5, 0xc547), .driver_info = BTUSB_REALTEK | 536 BTUSB_WIDEBAND_SPEECH }, 537 538 /* Silicon Wave based devices */ 539 { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE }, 540 541 { } /* Terminating entry */ 542 }; 543 544 /* The Bluetooth USB module build into some devices needs to be reset on resume, 545 * this is a problem with the platform (likely shutting off all power) not with 546 * the module itself. So we use a DMI list to match known broken platforms. 547 */ 548 static const struct dmi_system_id btusb_needs_reset_resume_table[] = { 549 { 550 /* Dell OptiPlex 3060 (QCA ROME device 0cf3:e007) */ 551 .matches = { 552 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 553 DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 3060"), 554 }, 555 }, 556 { 557 /* Dell XPS 9360 (QCA ROME device 0cf3:e300) */ 558 .matches = { 559 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 560 DMI_MATCH(DMI_PRODUCT_NAME, "XPS 13 9360"), 561 }, 562 }, 563 { 564 /* Dell Inspiron 5565 (QCA ROME device 0cf3:e009) */ 565 .matches = { 566 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 567 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5565"), 568 }, 569 }, 570 {} 571 }; 572 573 #define BTUSB_MAX_ISOC_FRAMES 10 574 575 #define BTUSB_INTR_RUNNING 0 576 #define BTUSB_BULK_RUNNING 1 577 #define BTUSB_ISOC_RUNNING 2 578 #define BTUSB_SUSPENDING 3 579 #define BTUSB_DID_ISO_RESUME 4 580 #define BTUSB_BOOTLOADER 5 581 #define BTUSB_DOWNLOADING 6 582 #define BTUSB_FIRMWARE_LOADED 7 583 #define BTUSB_FIRMWARE_FAILED 8 584 #define BTUSB_BOOTING 9 585 #define BTUSB_DIAG_RUNNING 10 586 #define BTUSB_OOB_WAKE_ENABLED 11 587 #define BTUSB_HW_RESET_ACTIVE 12 588 #define BTUSB_TX_WAIT_VND_EVT 13 589 #define BTUSB_WAKEUP_AUTOSUSPEND 14 590 #define BTUSB_USE_ALT3_FOR_WBS 15 591 592 struct btusb_data { 593 struct hci_dev *hdev; 594 struct usb_device *udev; 595 struct usb_interface *intf; 596 struct usb_interface *isoc; 597 struct usb_interface *diag; 598 unsigned isoc_ifnum; 599 600 unsigned long flags; 601 602 bool poll_sync; 603 int intr_interval; 604 struct work_struct work; 605 struct work_struct waker; 606 struct delayed_work rx_work; 607 608 struct sk_buff_head acl_q; 609 610 struct usb_anchor deferred; 611 struct usb_anchor tx_anchor; 612 int tx_in_flight; 613 spinlock_t txlock; 614 615 struct usb_anchor intr_anchor; 616 struct usb_anchor bulk_anchor; 617 struct usb_anchor isoc_anchor; 618 struct usb_anchor diag_anchor; 619 struct usb_anchor ctrl_anchor; 620 spinlock_t rxlock; 621 622 struct sk_buff *evt_skb; 623 struct sk_buff *acl_skb; 624 struct sk_buff *sco_skb; 625 626 struct usb_endpoint_descriptor *intr_ep; 627 struct usb_endpoint_descriptor *bulk_tx_ep; 628 struct usb_endpoint_descriptor *bulk_rx_ep; 629 struct usb_endpoint_descriptor *isoc_tx_ep; 630 struct usb_endpoint_descriptor *isoc_rx_ep; 631 struct usb_endpoint_descriptor *diag_tx_ep; 632 struct usb_endpoint_descriptor *diag_rx_ep; 633 634 struct gpio_desc *reset_gpio; 635 636 __u8 cmdreq_type; 637 __u8 cmdreq; 638 639 unsigned int sco_num; 640 unsigned int air_mode; 641 bool usb_alt6_packet_flow; 642 int isoc_altsetting; 643 int suspend_count; 644 645 int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb); 646 int (*recv_acl)(struct hci_dev *hdev, struct sk_buff *skb); 647 int (*recv_bulk)(struct btusb_data *data, void *buffer, int count); 648 649 int (*setup_on_usb)(struct hci_dev *hdev); 650 651 int oob_wake_irq; /* irq for out-of-band wake-on-bt */ 652 unsigned cmd_timeout_cnt; 653 }; 654 655 static void btusb_intel_cmd_timeout(struct hci_dev *hdev) 656 { 657 struct btusb_data *data = hci_get_drvdata(hdev); 658 struct gpio_desc *reset_gpio = data->reset_gpio; 659 660 if (++data->cmd_timeout_cnt < 5) 661 return; 662 663 if (!reset_gpio) { 664 bt_dev_err(hdev, "No way to reset. Ignoring and continuing"); 665 return; 666 } 667 668 /* 669 * Toggle the hard reset line if the platform provides one. The reset 670 * is going to yank the device off the USB and then replug. So doing 671 * once is enough. The cleanup is handled correctly on the way out 672 * (standard USB disconnect), and the new device is detected cleanly 673 * and bound to the driver again like it should be. 674 */ 675 if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) { 676 bt_dev_err(hdev, "last reset failed? Not resetting again"); 677 return; 678 } 679 680 bt_dev_err(hdev, "Initiating HW reset via gpio"); 681 gpiod_set_value_cansleep(reset_gpio, 1); 682 msleep(100); 683 gpiod_set_value_cansleep(reset_gpio, 0); 684 } 685 686 static void btusb_rtl_cmd_timeout(struct hci_dev *hdev) 687 { 688 struct btusb_data *data = hci_get_drvdata(hdev); 689 struct gpio_desc *reset_gpio = data->reset_gpio; 690 691 if (++data->cmd_timeout_cnt < 5) 692 return; 693 694 if (!reset_gpio) { 695 bt_dev_err(hdev, "No gpio to reset Realtek device, ignoring"); 696 return; 697 } 698 699 /* Toggle the hard reset line. The Realtek device is going to 700 * yank itself off the USB and then replug. The cleanup is handled 701 * correctly on the way out (standard USB disconnect), and the new 702 * device is detected cleanly and bound to the driver again like 703 * it should be. 704 */ 705 if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) { 706 bt_dev_err(hdev, "last reset failed? Not resetting again"); 707 return; 708 } 709 710 bt_dev_err(hdev, "Reset Realtek device via gpio"); 711 gpiod_set_value_cansleep(reset_gpio, 1); 712 msleep(200); 713 gpiod_set_value_cansleep(reset_gpio, 0); 714 } 715 716 static void btusb_qca_cmd_timeout(struct hci_dev *hdev) 717 { 718 struct btusb_data *data = hci_get_drvdata(hdev); 719 struct gpio_desc *reset_gpio = data->reset_gpio; 720 int err; 721 722 if (++data->cmd_timeout_cnt < 5) 723 return; 724 725 if (reset_gpio) { 726 bt_dev_err(hdev, "Reset qca device via bt_en gpio"); 727 728 /* Toggle the hard reset line. The qca bt device is going to 729 * yank itself off the USB and then replug. The cleanup is handled 730 * correctly on the way out (standard USB disconnect), and the new 731 * device is detected cleanly and bound to the driver again like 732 * it should be. 733 */ 734 if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) { 735 bt_dev_err(hdev, "last reset failed? Not resetting again"); 736 return; 737 } 738 739 gpiod_set_value_cansleep(reset_gpio, 0); 740 msleep(200); 741 gpiod_set_value_cansleep(reset_gpio, 1); 742 743 return; 744 } 745 746 bt_dev_err(hdev, "Multiple cmd timeouts seen. Resetting usb device."); 747 /* This is not an unbalanced PM reference since the device will reset */ 748 err = usb_autopm_get_interface(data->intf); 749 if (!err) 750 usb_queue_reset_device(data->intf); 751 else 752 bt_dev_err(hdev, "Failed usb_autopm_get_interface with %d", err); 753 } 754 755 static inline void btusb_free_frags(struct btusb_data *data) 756 { 757 unsigned long flags; 758 759 spin_lock_irqsave(&data->rxlock, flags); 760 761 kfree_skb(data->evt_skb); 762 data->evt_skb = NULL; 763 764 kfree_skb(data->acl_skb); 765 data->acl_skb = NULL; 766 767 kfree_skb(data->sco_skb); 768 data->sco_skb = NULL; 769 770 spin_unlock_irqrestore(&data->rxlock, flags); 771 } 772 773 static int btusb_recv_event(struct btusb_data *data, struct sk_buff *skb) 774 { 775 if (data->intr_interval) { 776 /* Trigger dequeue immediatelly if an event is received */ 777 schedule_delayed_work(&data->rx_work, 0); 778 } 779 780 return data->recv_event(data->hdev, skb); 781 } 782 783 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count) 784 { 785 struct sk_buff *skb; 786 unsigned long flags; 787 int err = 0; 788 789 spin_lock_irqsave(&data->rxlock, flags); 790 skb = data->evt_skb; 791 792 while (count) { 793 int len; 794 795 if (!skb) { 796 skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC); 797 if (!skb) { 798 err = -ENOMEM; 799 break; 800 } 801 802 hci_skb_pkt_type(skb) = HCI_EVENT_PKT; 803 hci_skb_expect(skb) = HCI_EVENT_HDR_SIZE; 804 } 805 806 len = min_t(uint, hci_skb_expect(skb), count); 807 skb_put_data(skb, buffer, len); 808 809 count -= len; 810 buffer += len; 811 hci_skb_expect(skb) -= len; 812 813 if (skb->len == HCI_EVENT_HDR_SIZE) { 814 /* Complete event header */ 815 hci_skb_expect(skb) = hci_event_hdr(skb)->plen; 816 817 if (skb_tailroom(skb) < hci_skb_expect(skb)) { 818 kfree_skb(skb); 819 skb = NULL; 820 821 err = -EILSEQ; 822 break; 823 } 824 } 825 826 if (!hci_skb_expect(skb)) { 827 /* Complete frame */ 828 btusb_recv_event(data, skb); 829 skb = NULL; 830 } 831 } 832 833 data->evt_skb = skb; 834 spin_unlock_irqrestore(&data->rxlock, flags); 835 836 return err; 837 } 838 839 static int btusb_recv_acl(struct btusb_data *data, struct sk_buff *skb) 840 { 841 /* Only queue ACL packet if intr_interval is set as it means 842 * force_poll_sync has been enabled. 843 */ 844 if (!data->intr_interval) 845 return data->recv_acl(data->hdev, skb); 846 847 skb_queue_tail(&data->acl_q, skb); 848 schedule_delayed_work(&data->rx_work, data->intr_interval); 849 850 return 0; 851 } 852 853 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count) 854 { 855 struct sk_buff *skb; 856 unsigned long flags; 857 int err = 0; 858 859 spin_lock_irqsave(&data->rxlock, flags); 860 skb = data->acl_skb; 861 862 while (count) { 863 int len; 864 865 if (!skb) { 866 skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC); 867 if (!skb) { 868 err = -ENOMEM; 869 break; 870 } 871 872 hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT; 873 hci_skb_expect(skb) = HCI_ACL_HDR_SIZE; 874 } 875 876 len = min_t(uint, hci_skb_expect(skb), count); 877 skb_put_data(skb, buffer, len); 878 879 count -= len; 880 buffer += len; 881 hci_skb_expect(skb) -= len; 882 883 if (skb->len == HCI_ACL_HDR_SIZE) { 884 __le16 dlen = hci_acl_hdr(skb)->dlen; 885 886 /* Complete ACL header */ 887 hci_skb_expect(skb) = __le16_to_cpu(dlen); 888 889 if (skb_tailroom(skb) < hci_skb_expect(skb)) { 890 kfree_skb(skb); 891 skb = NULL; 892 893 err = -EILSEQ; 894 break; 895 } 896 } 897 898 if (!hci_skb_expect(skb)) { 899 /* Complete frame */ 900 btusb_recv_acl(data, skb); 901 skb = NULL; 902 } 903 } 904 905 data->acl_skb = skb; 906 spin_unlock_irqrestore(&data->rxlock, flags); 907 908 return err; 909 } 910 911 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count) 912 { 913 struct sk_buff *skb; 914 unsigned long flags; 915 int err = 0; 916 917 spin_lock_irqsave(&data->rxlock, flags); 918 skb = data->sco_skb; 919 920 while (count) { 921 int len; 922 923 if (!skb) { 924 skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC); 925 if (!skb) { 926 err = -ENOMEM; 927 break; 928 } 929 930 hci_skb_pkt_type(skb) = HCI_SCODATA_PKT; 931 hci_skb_expect(skb) = HCI_SCO_HDR_SIZE; 932 } 933 934 len = min_t(uint, hci_skb_expect(skb), count); 935 skb_put_data(skb, buffer, len); 936 937 count -= len; 938 buffer += len; 939 hci_skb_expect(skb) -= len; 940 941 if (skb->len == HCI_SCO_HDR_SIZE) { 942 /* Complete SCO header */ 943 hci_skb_expect(skb) = hci_sco_hdr(skb)->dlen; 944 945 if (skb_tailroom(skb) < hci_skb_expect(skb)) { 946 kfree_skb(skb); 947 skb = NULL; 948 949 err = -EILSEQ; 950 break; 951 } 952 } 953 954 if (!hci_skb_expect(skb)) { 955 /* Complete frame */ 956 hci_recv_frame(data->hdev, skb); 957 skb = NULL; 958 } 959 } 960 961 data->sco_skb = skb; 962 spin_unlock_irqrestore(&data->rxlock, flags); 963 964 return err; 965 } 966 967 static void btusb_intr_complete(struct urb *urb) 968 { 969 struct hci_dev *hdev = urb->context; 970 struct btusb_data *data = hci_get_drvdata(hdev); 971 int err; 972 973 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, 974 urb->actual_length); 975 976 if (!test_bit(HCI_RUNNING, &hdev->flags)) 977 return; 978 979 if (urb->status == 0) { 980 hdev->stat.byte_rx += urb->actual_length; 981 982 if (btusb_recv_intr(data, urb->transfer_buffer, 983 urb->actual_length) < 0) { 984 bt_dev_err(hdev, "corrupted event packet"); 985 hdev->stat.err_rx++; 986 } 987 } else if (urb->status == -ENOENT) { 988 /* Avoid suspend failed when usb_kill_urb */ 989 return; 990 } 991 992 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags)) 993 return; 994 995 usb_mark_last_busy(data->udev); 996 usb_anchor_urb(urb, &data->intr_anchor); 997 998 err = usb_submit_urb(urb, GFP_ATOMIC); 999 if (err < 0) { 1000 /* -EPERM: urb is being killed; 1001 * -ENODEV: device got disconnected 1002 */ 1003 if (err != -EPERM && err != -ENODEV) 1004 bt_dev_err(hdev, "urb %p failed to resubmit (%d)", 1005 urb, -err); 1006 if (err != -EPERM) 1007 hci_cmd_sync_cancel(hdev, -err); 1008 usb_unanchor_urb(urb); 1009 } 1010 } 1011 1012 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags) 1013 { 1014 struct btusb_data *data = hci_get_drvdata(hdev); 1015 struct urb *urb; 1016 unsigned char *buf; 1017 unsigned int pipe; 1018 int err, size; 1019 1020 BT_DBG("%s", hdev->name); 1021 1022 if (!data->intr_ep) 1023 return -ENODEV; 1024 1025 urb = usb_alloc_urb(0, mem_flags); 1026 if (!urb) 1027 return -ENOMEM; 1028 1029 size = le16_to_cpu(data->intr_ep->wMaxPacketSize); 1030 1031 buf = kmalloc(size, mem_flags); 1032 if (!buf) { 1033 usb_free_urb(urb); 1034 return -ENOMEM; 1035 } 1036 1037 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress); 1038 1039 usb_fill_int_urb(urb, data->udev, pipe, buf, size, 1040 btusb_intr_complete, hdev, data->intr_ep->bInterval); 1041 1042 urb->transfer_flags |= URB_FREE_BUFFER; 1043 1044 usb_anchor_urb(urb, &data->intr_anchor); 1045 1046 err = usb_submit_urb(urb, mem_flags); 1047 if (err < 0) { 1048 if (err != -EPERM && err != -ENODEV) 1049 bt_dev_err(hdev, "urb %p submission failed (%d)", 1050 urb, -err); 1051 if (err != -EPERM) 1052 hci_cmd_sync_cancel(hdev, -err); 1053 usb_unanchor_urb(urb); 1054 } 1055 1056 /* Only initialize intr_interval if URB poll sync is enabled */ 1057 if (!data->poll_sync) 1058 goto done; 1059 1060 /* The units are frames (milliseconds) for full and low speed devices, 1061 * and microframes (1/8 millisecond) for highspeed and SuperSpeed 1062 * devices. 1063 * 1064 * This is done once on open/resume so it shouldn't change even if 1065 * force_poll_sync changes. 1066 */ 1067 switch (urb->dev->speed) { 1068 case USB_SPEED_SUPER_PLUS: 1069 case USB_SPEED_SUPER: /* units are 125us */ 1070 data->intr_interval = usecs_to_jiffies(urb->interval * 125); 1071 break; 1072 default: 1073 data->intr_interval = msecs_to_jiffies(urb->interval); 1074 break; 1075 } 1076 1077 done: 1078 usb_free_urb(urb); 1079 1080 return err; 1081 } 1082 1083 static void btusb_bulk_complete(struct urb *urb) 1084 { 1085 struct hci_dev *hdev = urb->context; 1086 struct btusb_data *data = hci_get_drvdata(hdev); 1087 int err; 1088 1089 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, 1090 urb->actual_length); 1091 1092 if (!test_bit(HCI_RUNNING, &hdev->flags)) 1093 return; 1094 1095 if (urb->status == 0) { 1096 hdev->stat.byte_rx += urb->actual_length; 1097 1098 if (data->recv_bulk(data, urb->transfer_buffer, 1099 urb->actual_length) < 0) { 1100 bt_dev_err(hdev, "corrupted ACL packet"); 1101 hdev->stat.err_rx++; 1102 } 1103 } else if (urb->status == -ENOENT) { 1104 /* Avoid suspend failed when usb_kill_urb */ 1105 return; 1106 } 1107 1108 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags)) 1109 return; 1110 1111 usb_anchor_urb(urb, &data->bulk_anchor); 1112 usb_mark_last_busy(data->udev); 1113 1114 err = usb_submit_urb(urb, GFP_ATOMIC); 1115 if (err < 0) { 1116 /* -EPERM: urb is being killed; 1117 * -ENODEV: device got disconnected 1118 */ 1119 if (err != -EPERM && err != -ENODEV) 1120 bt_dev_err(hdev, "urb %p failed to resubmit (%d)", 1121 urb, -err); 1122 usb_unanchor_urb(urb); 1123 } 1124 } 1125 1126 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags) 1127 { 1128 struct btusb_data *data = hci_get_drvdata(hdev); 1129 struct urb *urb; 1130 unsigned char *buf; 1131 unsigned int pipe; 1132 int err, size = HCI_MAX_FRAME_SIZE; 1133 1134 BT_DBG("%s", hdev->name); 1135 1136 if (!data->bulk_rx_ep) 1137 return -ENODEV; 1138 1139 urb = usb_alloc_urb(0, mem_flags); 1140 if (!urb) 1141 return -ENOMEM; 1142 1143 buf = kmalloc(size, mem_flags); 1144 if (!buf) { 1145 usb_free_urb(urb); 1146 return -ENOMEM; 1147 } 1148 1149 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress); 1150 1151 usb_fill_bulk_urb(urb, data->udev, pipe, buf, size, 1152 btusb_bulk_complete, hdev); 1153 1154 urb->transfer_flags |= URB_FREE_BUFFER; 1155 1156 usb_mark_last_busy(data->udev); 1157 usb_anchor_urb(urb, &data->bulk_anchor); 1158 1159 err = usb_submit_urb(urb, mem_flags); 1160 if (err < 0) { 1161 if (err != -EPERM && err != -ENODEV) 1162 bt_dev_err(hdev, "urb %p submission failed (%d)", 1163 urb, -err); 1164 usb_unanchor_urb(urb); 1165 } 1166 1167 usb_free_urb(urb); 1168 1169 return err; 1170 } 1171 1172 static void btusb_isoc_complete(struct urb *urb) 1173 { 1174 struct hci_dev *hdev = urb->context; 1175 struct btusb_data *data = hci_get_drvdata(hdev); 1176 int i, err; 1177 1178 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, 1179 urb->actual_length); 1180 1181 if (!test_bit(HCI_RUNNING, &hdev->flags)) 1182 return; 1183 1184 if (urb->status == 0) { 1185 for (i = 0; i < urb->number_of_packets; i++) { 1186 unsigned int offset = urb->iso_frame_desc[i].offset; 1187 unsigned int length = urb->iso_frame_desc[i].actual_length; 1188 1189 if (urb->iso_frame_desc[i].status) 1190 continue; 1191 1192 hdev->stat.byte_rx += length; 1193 1194 if (btusb_recv_isoc(data, urb->transfer_buffer + offset, 1195 length) < 0) { 1196 bt_dev_err(hdev, "corrupted SCO packet"); 1197 hdev->stat.err_rx++; 1198 } 1199 } 1200 } else if (urb->status == -ENOENT) { 1201 /* Avoid suspend failed when usb_kill_urb */ 1202 return; 1203 } 1204 1205 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags)) 1206 return; 1207 1208 usb_anchor_urb(urb, &data->isoc_anchor); 1209 1210 err = usb_submit_urb(urb, GFP_ATOMIC); 1211 if (err < 0) { 1212 /* -EPERM: urb is being killed; 1213 * -ENODEV: device got disconnected 1214 */ 1215 if (err != -EPERM && err != -ENODEV) 1216 bt_dev_err(hdev, "urb %p failed to resubmit (%d)", 1217 urb, -err); 1218 usb_unanchor_urb(urb); 1219 } 1220 } 1221 1222 static inline void __fill_isoc_descriptor_msbc(struct urb *urb, int len, 1223 int mtu, struct btusb_data *data) 1224 { 1225 int i, offset = 0; 1226 unsigned int interval; 1227 1228 BT_DBG("len %d mtu %d", len, mtu); 1229 1230 /* For mSBC ALT 6 setting the host will send the packet at continuous 1231 * flow. As per core spec 5, vol 4, part B, table 2.1. For ALT setting 1232 * 6 the HCI PACKET INTERVAL should be 7.5ms for every usb packets. 1233 * To maintain the rate we send 63bytes of usb packets alternatively for 1234 * 7ms and 8ms to maintain the rate as 7.5ms. 1235 */ 1236 if (data->usb_alt6_packet_flow) { 1237 interval = 7; 1238 data->usb_alt6_packet_flow = false; 1239 } else { 1240 interval = 6; 1241 data->usb_alt6_packet_flow = true; 1242 } 1243 1244 for (i = 0; i < interval; i++) { 1245 urb->iso_frame_desc[i].offset = offset; 1246 urb->iso_frame_desc[i].length = offset; 1247 } 1248 1249 if (len && i < BTUSB_MAX_ISOC_FRAMES) { 1250 urb->iso_frame_desc[i].offset = offset; 1251 urb->iso_frame_desc[i].length = len; 1252 i++; 1253 } 1254 1255 urb->number_of_packets = i; 1256 } 1257 1258 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu) 1259 { 1260 int i, offset = 0; 1261 1262 BT_DBG("len %d mtu %d", len, mtu); 1263 1264 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu; 1265 i++, offset += mtu, len -= mtu) { 1266 urb->iso_frame_desc[i].offset = offset; 1267 urb->iso_frame_desc[i].length = mtu; 1268 } 1269 1270 if (len && i < BTUSB_MAX_ISOC_FRAMES) { 1271 urb->iso_frame_desc[i].offset = offset; 1272 urb->iso_frame_desc[i].length = len; 1273 i++; 1274 } 1275 1276 urb->number_of_packets = i; 1277 } 1278 1279 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags) 1280 { 1281 struct btusb_data *data = hci_get_drvdata(hdev); 1282 struct urb *urb; 1283 unsigned char *buf; 1284 unsigned int pipe; 1285 int err, size; 1286 1287 BT_DBG("%s", hdev->name); 1288 1289 if (!data->isoc_rx_ep) 1290 return -ENODEV; 1291 1292 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags); 1293 if (!urb) 1294 return -ENOMEM; 1295 1296 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) * 1297 BTUSB_MAX_ISOC_FRAMES; 1298 1299 buf = kmalloc(size, mem_flags); 1300 if (!buf) { 1301 usb_free_urb(urb); 1302 return -ENOMEM; 1303 } 1304 1305 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress); 1306 1307 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete, 1308 hdev, data->isoc_rx_ep->bInterval); 1309 1310 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP; 1311 1312 __fill_isoc_descriptor(urb, size, 1313 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize)); 1314 1315 usb_anchor_urb(urb, &data->isoc_anchor); 1316 1317 err = usb_submit_urb(urb, mem_flags); 1318 if (err < 0) { 1319 if (err != -EPERM && err != -ENODEV) 1320 bt_dev_err(hdev, "urb %p submission failed (%d)", 1321 urb, -err); 1322 usb_unanchor_urb(urb); 1323 } 1324 1325 usb_free_urb(urb); 1326 1327 return err; 1328 } 1329 1330 static void btusb_diag_complete(struct urb *urb) 1331 { 1332 struct hci_dev *hdev = urb->context; 1333 struct btusb_data *data = hci_get_drvdata(hdev); 1334 int err; 1335 1336 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, 1337 urb->actual_length); 1338 1339 if (urb->status == 0) { 1340 struct sk_buff *skb; 1341 1342 skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC); 1343 if (skb) { 1344 skb_put_data(skb, urb->transfer_buffer, 1345 urb->actual_length); 1346 hci_recv_diag(hdev, skb); 1347 } 1348 } else if (urb->status == -ENOENT) { 1349 /* Avoid suspend failed when usb_kill_urb */ 1350 return; 1351 } 1352 1353 if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags)) 1354 return; 1355 1356 usb_anchor_urb(urb, &data->diag_anchor); 1357 usb_mark_last_busy(data->udev); 1358 1359 err = usb_submit_urb(urb, GFP_ATOMIC); 1360 if (err < 0) { 1361 /* -EPERM: urb is being killed; 1362 * -ENODEV: device got disconnected 1363 */ 1364 if (err != -EPERM && err != -ENODEV) 1365 bt_dev_err(hdev, "urb %p failed to resubmit (%d)", 1366 urb, -err); 1367 usb_unanchor_urb(urb); 1368 } 1369 } 1370 1371 static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags) 1372 { 1373 struct btusb_data *data = hci_get_drvdata(hdev); 1374 struct urb *urb; 1375 unsigned char *buf; 1376 unsigned int pipe; 1377 int err, size = HCI_MAX_FRAME_SIZE; 1378 1379 BT_DBG("%s", hdev->name); 1380 1381 if (!data->diag_rx_ep) 1382 return -ENODEV; 1383 1384 urb = usb_alloc_urb(0, mem_flags); 1385 if (!urb) 1386 return -ENOMEM; 1387 1388 buf = kmalloc(size, mem_flags); 1389 if (!buf) { 1390 usb_free_urb(urb); 1391 return -ENOMEM; 1392 } 1393 1394 pipe = usb_rcvbulkpipe(data->udev, data->diag_rx_ep->bEndpointAddress); 1395 1396 usb_fill_bulk_urb(urb, data->udev, pipe, buf, size, 1397 btusb_diag_complete, hdev); 1398 1399 urb->transfer_flags |= URB_FREE_BUFFER; 1400 1401 usb_mark_last_busy(data->udev); 1402 usb_anchor_urb(urb, &data->diag_anchor); 1403 1404 err = usb_submit_urb(urb, mem_flags); 1405 if (err < 0) { 1406 if (err != -EPERM && err != -ENODEV) 1407 bt_dev_err(hdev, "urb %p submission failed (%d)", 1408 urb, -err); 1409 usb_unanchor_urb(urb); 1410 } 1411 1412 usb_free_urb(urb); 1413 1414 return err; 1415 } 1416 1417 static void btusb_tx_complete(struct urb *urb) 1418 { 1419 struct sk_buff *skb = urb->context; 1420 struct hci_dev *hdev = (struct hci_dev *)skb->dev; 1421 struct btusb_data *data = hci_get_drvdata(hdev); 1422 unsigned long flags; 1423 1424 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, 1425 urb->actual_length); 1426 1427 if (!test_bit(HCI_RUNNING, &hdev->flags)) 1428 goto done; 1429 1430 if (!urb->status) { 1431 hdev->stat.byte_tx += urb->transfer_buffer_length; 1432 } else { 1433 if (hci_skb_pkt_type(skb) == HCI_COMMAND_PKT) 1434 hci_cmd_sync_cancel(hdev, -urb->status); 1435 hdev->stat.err_tx++; 1436 } 1437 1438 done: 1439 spin_lock_irqsave(&data->txlock, flags); 1440 data->tx_in_flight--; 1441 spin_unlock_irqrestore(&data->txlock, flags); 1442 1443 kfree(urb->setup_packet); 1444 1445 kfree_skb(skb); 1446 } 1447 1448 static void btusb_isoc_tx_complete(struct urb *urb) 1449 { 1450 struct sk_buff *skb = urb->context; 1451 struct hci_dev *hdev = (struct hci_dev *)skb->dev; 1452 1453 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, 1454 urb->actual_length); 1455 1456 if (!test_bit(HCI_RUNNING, &hdev->flags)) 1457 goto done; 1458 1459 if (!urb->status) 1460 hdev->stat.byte_tx += urb->transfer_buffer_length; 1461 else 1462 hdev->stat.err_tx++; 1463 1464 done: 1465 kfree(urb->setup_packet); 1466 1467 kfree_skb(skb); 1468 } 1469 1470 static int btusb_open(struct hci_dev *hdev) 1471 { 1472 struct btusb_data *data = hci_get_drvdata(hdev); 1473 int err; 1474 1475 BT_DBG("%s", hdev->name); 1476 1477 err = usb_autopm_get_interface(data->intf); 1478 if (err < 0) 1479 return err; 1480 1481 /* Patching USB firmware files prior to starting any URBs of HCI path 1482 * It is more safe to use USB bulk channel for downloading USB patch 1483 */ 1484 if (data->setup_on_usb) { 1485 err = data->setup_on_usb(hdev); 1486 if (err < 0) 1487 goto setup_fail; 1488 } 1489 1490 data->intf->needs_remote_wakeup = 1; 1491 1492 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags)) 1493 goto done; 1494 1495 err = btusb_submit_intr_urb(hdev, GFP_KERNEL); 1496 if (err < 0) 1497 goto failed; 1498 1499 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL); 1500 if (err < 0) { 1501 usb_kill_anchored_urbs(&data->intr_anchor); 1502 goto failed; 1503 } 1504 1505 set_bit(BTUSB_BULK_RUNNING, &data->flags); 1506 btusb_submit_bulk_urb(hdev, GFP_KERNEL); 1507 1508 if (data->diag) { 1509 if (!btusb_submit_diag_urb(hdev, GFP_KERNEL)) 1510 set_bit(BTUSB_DIAG_RUNNING, &data->flags); 1511 } 1512 1513 done: 1514 usb_autopm_put_interface(data->intf); 1515 return 0; 1516 1517 failed: 1518 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 1519 setup_fail: 1520 usb_autopm_put_interface(data->intf); 1521 return err; 1522 } 1523 1524 static void btusb_stop_traffic(struct btusb_data *data) 1525 { 1526 usb_kill_anchored_urbs(&data->intr_anchor); 1527 usb_kill_anchored_urbs(&data->bulk_anchor); 1528 usb_kill_anchored_urbs(&data->isoc_anchor); 1529 usb_kill_anchored_urbs(&data->diag_anchor); 1530 usb_kill_anchored_urbs(&data->ctrl_anchor); 1531 } 1532 1533 static int btusb_close(struct hci_dev *hdev) 1534 { 1535 struct btusb_data *data = hci_get_drvdata(hdev); 1536 int err; 1537 1538 BT_DBG("%s", hdev->name); 1539 1540 cancel_delayed_work(&data->rx_work); 1541 cancel_work_sync(&data->work); 1542 cancel_work_sync(&data->waker); 1543 1544 skb_queue_purge(&data->acl_q); 1545 1546 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1547 clear_bit(BTUSB_BULK_RUNNING, &data->flags); 1548 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 1549 clear_bit(BTUSB_DIAG_RUNNING, &data->flags); 1550 1551 btusb_stop_traffic(data); 1552 btusb_free_frags(data); 1553 1554 err = usb_autopm_get_interface(data->intf); 1555 if (err < 0) 1556 goto failed; 1557 1558 data->intf->needs_remote_wakeup = 0; 1559 1560 /* Enable remote wake up for auto-suspend */ 1561 if (test_bit(BTUSB_WAKEUP_AUTOSUSPEND, &data->flags)) 1562 data->intf->needs_remote_wakeup = 1; 1563 1564 usb_autopm_put_interface(data->intf); 1565 1566 failed: 1567 usb_scuttle_anchored_urbs(&data->deferred); 1568 return 0; 1569 } 1570 1571 static int btusb_flush(struct hci_dev *hdev) 1572 { 1573 struct btusb_data *data = hci_get_drvdata(hdev); 1574 1575 BT_DBG("%s", hdev->name); 1576 1577 cancel_delayed_work(&data->rx_work); 1578 1579 skb_queue_purge(&data->acl_q); 1580 1581 usb_kill_anchored_urbs(&data->tx_anchor); 1582 btusb_free_frags(data); 1583 1584 return 0; 1585 } 1586 1587 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb) 1588 { 1589 struct btusb_data *data = hci_get_drvdata(hdev); 1590 struct usb_ctrlrequest *dr; 1591 struct urb *urb; 1592 unsigned int pipe; 1593 1594 urb = usb_alloc_urb(0, GFP_KERNEL); 1595 if (!urb) 1596 return ERR_PTR(-ENOMEM); 1597 1598 dr = kmalloc(sizeof(*dr), GFP_KERNEL); 1599 if (!dr) { 1600 usb_free_urb(urb); 1601 return ERR_PTR(-ENOMEM); 1602 } 1603 1604 dr->bRequestType = data->cmdreq_type; 1605 dr->bRequest = data->cmdreq; 1606 dr->wIndex = 0; 1607 dr->wValue = 0; 1608 dr->wLength = __cpu_to_le16(skb->len); 1609 1610 pipe = usb_sndctrlpipe(data->udev, 0x00); 1611 1612 usb_fill_control_urb(urb, data->udev, pipe, (void *)dr, 1613 skb->data, skb->len, btusb_tx_complete, skb); 1614 1615 skb->dev = (void *)hdev; 1616 1617 return urb; 1618 } 1619 1620 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb) 1621 { 1622 struct btusb_data *data = hci_get_drvdata(hdev); 1623 struct urb *urb; 1624 unsigned int pipe; 1625 1626 if (!data->bulk_tx_ep) 1627 return ERR_PTR(-ENODEV); 1628 1629 urb = usb_alloc_urb(0, GFP_KERNEL); 1630 if (!urb) 1631 return ERR_PTR(-ENOMEM); 1632 1633 pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress); 1634 1635 usb_fill_bulk_urb(urb, data->udev, pipe, 1636 skb->data, skb->len, btusb_tx_complete, skb); 1637 1638 skb->dev = (void *)hdev; 1639 1640 return urb; 1641 } 1642 1643 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb) 1644 { 1645 struct btusb_data *data = hci_get_drvdata(hdev); 1646 struct urb *urb; 1647 unsigned int pipe; 1648 1649 if (!data->isoc_tx_ep) 1650 return ERR_PTR(-ENODEV); 1651 1652 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL); 1653 if (!urb) 1654 return ERR_PTR(-ENOMEM); 1655 1656 pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress); 1657 1658 usb_fill_int_urb(urb, data->udev, pipe, 1659 skb->data, skb->len, btusb_isoc_tx_complete, 1660 skb, data->isoc_tx_ep->bInterval); 1661 1662 urb->transfer_flags = URB_ISO_ASAP; 1663 1664 if (data->isoc_altsetting == 6) 1665 __fill_isoc_descriptor_msbc(urb, skb->len, 1666 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize), 1667 data); 1668 else 1669 __fill_isoc_descriptor(urb, skb->len, 1670 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize)); 1671 skb->dev = (void *)hdev; 1672 1673 return urb; 1674 } 1675 1676 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb) 1677 { 1678 struct btusb_data *data = hci_get_drvdata(hdev); 1679 int err; 1680 1681 usb_anchor_urb(urb, &data->tx_anchor); 1682 1683 err = usb_submit_urb(urb, GFP_KERNEL); 1684 if (err < 0) { 1685 if (err != -EPERM && err != -ENODEV) 1686 bt_dev_err(hdev, "urb %p submission failed (%d)", 1687 urb, -err); 1688 kfree(urb->setup_packet); 1689 usb_unanchor_urb(urb); 1690 } else { 1691 usb_mark_last_busy(data->udev); 1692 } 1693 1694 usb_free_urb(urb); 1695 return err; 1696 } 1697 1698 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb) 1699 { 1700 struct btusb_data *data = hci_get_drvdata(hdev); 1701 unsigned long flags; 1702 bool suspending; 1703 1704 spin_lock_irqsave(&data->txlock, flags); 1705 suspending = test_bit(BTUSB_SUSPENDING, &data->flags); 1706 if (!suspending) 1707 data->tx_in_flight++; 1708 spin_unlock_irqrestore(&data->txlock, flags); 1709 1710 if (!suspending) 1711 return submit_tx_urb(hdev, urb); 1712 1713 usb_anchor_urb(urb, &data->deferred); 1714 schedule_work(&data->waker); 1715 1716 usb_free_urb(urb); 1717 return 0; 1718 } 1719 1720 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb) 1721 { 1722 struct urb *urb; 1723 1724 BT_DBG("%s", hdev->name); 1725 1726 switch (hci_skb_pkt_type(skb)) { 1727 case HCI_COMMAND_PKT: 1728 urb = alloc_ctrl_urb(hdev, skb); 1729 if (IS_ERR(urb)) 1730 return PTR_ERR(urb); 1731 1732 hdev->stat.cmd_tx++; 1733 return submit_or_queue_tx_urb(hdev, urb); 1734 1735 case HCI_ACLDATA_PKT: 1736 urb = alloc_bulk_urb(hdev, skb); 1737 if (IS_ERR(urb)) 1738 return PTR_ERR(urb); 1739 1740 hdev->stat.acl_tx++; 1741 return submit_or_queue_tx_urb(hdev, urb); 1742 1743 case HCI_SCODATA_PKT: 1744 if (hci_conn_num(hdev, SCO_LINK) < 1) 1745 return -ENODEV; 1746 1747 urb = alloc_isoc_urb(hdev, skb); 1748 if (IS_ERR(urb)) 1749 return PTR_ERR(urb); 1750 1751 hdev->stat.sco_tx++; 1752 return submit_tx_urb(hdev, urb); 1753 } 1754 1755 return -EILSEQ; 1756 } 1757 1758 static void btusb_notify(struct hci_dev *hdev, unsigned int evt) 1759 { 1760 struct btusb_data *data = hci_get_drvdata(hdev); 1761 1762 BT_DBG("%s evt %d", hdev->name, evt); 1763 1764 if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) { 1765 data->sco_num = hci_conn_num(hdev, SCO_LINK); 1766 data->air_mode = evt; 1767 schedule_work(&data->work); 1768 } 1769 } 1770 1771 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting) 1772 { 1773 struct btusb_data *data = hci_get_drvdata(hdev); 1774 struct usb_interface *intf = data->isoc; 1775 struct usb_endpoint_descriptor *ep_desc; 1776 int i, err; 1777 1778 if (!data->isoc) 1779 return -ENODEV; 1780 1781 err = usb_set_interface(data->udev, data->isoc_ifnum, altsetting); 1782 if (err < 0) { 1783 bt_dev_err(hdev, "setting interface failed (%d)", -err); 1784 return err; 1785 } 1786 1787 data->isoc_altsetting = altsetting; 1788 1789 data->isoc_tx_ep = NULL; 1790 data->isoc_rx_ep = NULL; 1791 1792 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { 1793 ep_desc = &intf->cur_altsetting->endpoint[i].desc; 1794 1795 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) { 1796 data->isoc_tx_ep = ep_desc; 1797 continue; 1798 } 1799 1800 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) { 1801 data->isoc_rx_ep = ep_desc; 1802 continue; 1803 } 1804 } 1805 1806 if (!data->isoc_tx_ep || !data->isoc_rx_ep) { 1807 bt_dev_err(hdev, "invalid SCO descriptors"); 1808 return -ENODEV; 1809 } 1810 1811 return 0; 1812 } 1813 1814 static int btusb_switch_alt_setting(struct hci_dev *hdev, int new_alts) 1815 { 1816 struct btusb_data *data = hci_get_drvdata(hdev); 1817 int err; 1818 1819 if (data->isoc_altsetting != new_alts) { 1820 unsigned long flags; 1821 1822 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1823 usb_kill_anchored_urbs(&data->isoc_anchor); 1824 1825 /* When isochronous alternate setting needs to be 1826 * changed, because SCO connection has been added 1827 * or removed, a packet fragment may be left in the 1828 * reassembling state. This could lead to wrongly 1829 * assembled fragments. 1830 * 1831 * Clear outstanding fragment when selecting a new 1832 * alternate setting. 1833 */ 1834 spin_lock_irqsave(&data->rxlock, flags); 1835 kfree_skb(data->sco_skb); 1836 data->sco_skb = NULL; 1837 spin_unlock_irqrestore(&data->rxlock, flags); 1838 1839 err = __set_isoc_interface(hdev, new_alts); 1840 if (err < 0) 1841 return err; 1842 } 1843 1844 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) { 1845 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0) 1846 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1847 else 1848 btusb_submit_isoc_urb(hdev, GFP_KERNEL); 1849 } 1850 1851 return 0; 1852 } 1853 1854 static struct usb_host_interface *btusb_find_altsetting(struct btusb_data *data, 1855 int alt) 1856 { 1857 struct usb_interface *intf = data->isoc; 1858 int i; 1859 1860 BT_DBG("Looking for Alt no :%d", alt); 1861 1862 if (!intf) 1863 return NULL; 1864 1865 for (i = 0; i < intf->num_altsetting; i++) { 1866 if (intf->altsetting[i].desc.bAlternateSetting == alt) 1867 return &intf->altsetting[i]; 1868 } 1869 1870 return NULL; 1871 } 1872 1873 static void btusb_work(struct work_struct *work) 1874 { 1875 struct btusb_data *data = container_of(work, struct btusb_data, work); 1876 struct hci_dev *hdev = data->hdev; 1877 int new_alts = 0; 1878 int err; 1879 1880 if (data->sco_num > 0) { 1881 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) { 1882 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf); 1883 if (err < 0) { 1884 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1885 usb_kill_anchored_urbs(&data->isoc_anchor); 1886 return; 1887 } 1888 1889 set_bit(BTUSB_DID_ISO_RESUME, &data->flags); 1890 } 1891 1892 if (data->air_mode == HCI_NOTIFY_ENABLE_SCO_CVSD) { 1893 if (hdev->voice_setting & 0x0020) { 1894 static const int alts[3] = { 2, 4, 5 }; 1895 1896 new_alts = alts[data->sco_num - 1]; 1897 } else { 1898 new_alts = data->sco_num; 1899 } 1900 } else if (data->air_mode == HCI_NOTIFY_ENABLE_SCO_TRANSP) { 1901 /* Bluetooth USB spec recommends alt 6 (63 bytes), but 1902 * many adapters do not support it. Alt 1 appears to 1903 * work for all adapters that do not have alt 6, and 1904 * which work with WBS at all. Some devices prefer 1905 * alt 3 (HCI payload >= 60 Bytes let air packet 1906 * data satisfy 60 bytes), requiring 1907 * MTU >= 3 (packets) * 25 (size) - 3 (headers) = 72 1908 * see also Core spec 5, vol 4, B 2.1.1 & Table 2.1. 1909 */ 1910 if (btusb_find_altsetting(data, 6)) 1911 new_alts = 6; 1912 else if (btusb_find_altsetting(data, 3) && 1913 hdev->sco_mtu >= 72 && 1914 test_bit(BTUSB_USE_ALT3_FOR_WBS, &data->flags)) 1915 new_alts = 3; 1916 else 1917 new_alts = 1; 1918 } 1919 1920 if (btusb_switch_alt_setting(hdev, new_alts) < 0) 1921 bt_dev_err(hdev, "set USB alt:(%d) failed!", new_alts); 1922 } else { 1923 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1924 usb_kill_anchored_urbs(&data->isoc_anchor); 1925 1926 __set_isoc_interface(hdev, 0); 1927 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags)) 1928 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf); 1929 } 1930 } 1931 1932 static void btusb_waker(struct work_struct *work) 1933 { 1934 struct btusb_data *data = container_of(work, struct btusb_data, waker); 1935 int err; 1936 1937 err = usb_autopm_get_interface(data->intf); 1938 if (err < 0) 1939 return; 1940 1941 usb_autopm_put_interface(data->intf); 1942 } 1943 1944 static void btusb_rx_work(struct work_struct *work) 1945 { 1946 struct btusb_data *data = container_of(work, struct btusb_data, 1947 rx_work.work); 1948 struct sk_buff *skb; 1949 1950 /* Dequeue ACL data received during the interval */ 1951 while ((skb = skb_dequeue(&data->acl_q))) 1952 data->recv_acl(data->hdev, skb); 1953 } 1954 1955 static int btusb_setup_bcm92035(struct hci_dev *hdev) 1956 { 1957 struct sk_buff *skb; 1958 u8 val = 0x00; 1959 1960 BT_DBG("%s", hdev->name); 1961 1962 skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT); 1963 if (IS_ERR(skb)) 1964 bt_dev_err(hdev, "BCM92035 command failed (%ld)", PTR_ERR(skb)); 1965 else 1966 kfree_skb(skb); 1967 1968 return 0; 1969 } 1970 1971 static int btusb_setup_csr(struct hci_dev *hdev) 1972 { 1973 struct btusb_data *data = hci_get_drvdata(hdev); 1974 u16 bcdDevice = le16_to_cpu(data->udev->descriptor.bcdDevice); 1975 struct hci_rp_read_local_version *rp; 1976 struct sk_buff *skb; 1977 bool is_fake = false; 1978 int ret; 1979 1980 BT_DBG("%s", hdev->name); 1981 1982 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL, 1983 HCI_INIT_TIMEOUT); 1984 if (IS_ERR(skb)) { 1985 int err = PTR_ERR(skb); 1986 bt_dev_err(hdev, "CSR: Local version failed (%d)", err); 1987 return err; 1988 } 1989 1990 if (skb->len != sizeof(struct hci_rp_read_local_version)) { 1991 bt_dev_err(hdev, "CSR: Local version length mismatch"); 1992 kfree_skb(skb); 1993 return -EIO; 1994 } 1995 1996 rp = (struct hci_rp_read_local_version *)skb->data; 1997 1998 /* Detect a wide host of Chinese controllers that aren't CSR. 1999 * 2000 * Known fake bcdDevices: 0x0100, 0x0134, 0x1915, 0x2520, 0x7558, 0x8891 2001 * 2002 * The main thing they have in common is that these are really popular low-cost 2003 * options that support newer Bluetooth versions but rely on heavy VID/PID 2004 * squatting of this poor old Bluetooth 1.1 device. Even sold as such. 2005 * 2006 * We detect actual CSR devices by checking that the HCI manufacturer code 2007 * is Cambridge Silicon Radio (10) and ensuring that LMP sub-version and 2008 * HCI rev values always match. As they both store the firmware number. 2009 */ 2010 if (le16_to_cpu(rp->manufacturer) != 10 || 2011 le16_to_cpu(rp->hci_rev) != le16_to_cpu(rp->lmp_subver)) 2012 is_fake = true; 2013 2014 /* Known legit CSR firmware build numbers and their supported BT versions: 2015 * - 1.1 (0x1) -> 0x0073, 0x020d, 0x033c, 0x034e 2016 * - 1.2 (0x2) -> 0x04d9, 0x0529 2017 * - 2.0 (0x3) -> 0x07a6, 0x07ad, 0x0c5c 2018 * - 2.1 (0x4) -> 0x149c, 0x1735, 0x1899 (0x1899 is a BlueCore4-External) 2019 * - 4.0 (0x6) -> 0x1d86, 0x2031, 0x22bb 2020 * 2021 * e.g. Real CSR dongles with LMP subversion 0x73 are old enough that 2022 * support BT 1.1 only; so it's a dead giveaway when some 2023 * third-party BT 4.0 dongle reuses it. 2024 */ 2025 else if (le16_to_cpu(rp->lmp_subver) <= 0x034e && 2026 le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_1_1) 2027 is_fake = true; 2028 2029 else if (le16_to_cpu(rp->lmp_subver) <= 0x0529 && 2030 le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_1_2) 2031 is_fake = true; 2032 2033 else if (le16_to_cpu(rp->lmp_subver) <= 0x0c5c && 2034 le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_2_0) 2035 is_fake = true; 2036 2037 else if (le16_to_cpu(rp->lmp_subver) <= 0x1899 && 2038 le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_2_1) 2039 is_fake = true; 2040 2041 else if (le16_to_cpu(rp->lmp_subver) <= 0x22bb && 2042 le16_to_cpu(rp->hci_ver) > BLUETOOTH_VER_4_0) 2043 is_fake = true; 2044 2045 /* Other clones which beat all the above checks */ 2046 else if (bcdDevice == 0x0134 && 2047 le16_to_cpu(rp->lmp_subver) == 0x0c5c && 2048 le16_to_cpu(rp->hci_ver) == BLUETOOTH_VER_2_0) 2049 is_fake = true; 2050 2051 if (is_fake) { 2052 bt_dev_warn(hdev, "CSR: Unbranded CSR clone detected; adding workarounds and force-suspending once..."); 2053 2054 /* Generally these clones have big discrepancies between 2055 * advertised features and what's actually supported. 2056 * Probably will need to be expanded in the future; 2057 * without these the controller will lock up. 2058 */ 2059 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks); 2060 set_bit(HCI_QUIRK_BROKEN_ERR_DATA_REPORTING, &hdev->quirks); 2061 set_bit(HCI_QUIRK_BROKEN_FILTER_CLEAR_ALL, &hdev->quirks); 2062 set_bit(HCI_QUIRK_NO_SUSPEND_NOTIFIER, &hdev->quirks); 2063 2064 /* Clear the reset quirk since this is not an actual 2065 * early Bluetooth 1.1 device from CSR. 2066 */ 2067 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); 2068 clear_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); 2069 2070 /* 2071 * Special workaround for these BT 4.0 chip clones, and potentially more: 2072 * 2073 * - 0x0134: a Barrot 8041a02 (HCI rev: 0x0810 sub: 0x1012) 2074 * - 0x7558: IC markings FR3191AHAL 749H15143 (HCI rev/sub-version: 0x0709) 2075 * 2076 * These controllers are really messed-up. 2077 * 2078 * 1. Their bulk RX endpoint will never report any data unless 2079 * the device was suspended at least once (yes, really). 2080 * 2. They will not wakeup when autosuspended and receiving data 2081 * on their bulk RX endpoint from e.g. a keyboard or mouse 2082 * (IOW remote-wakeup support is broken for the bulk endpoint). 2083 * 2084 * To fix 1. enable runtime-suspend, force-suspend the 2085 * HCI and then wake-it up by disabling runtime-suspend. 2086 * 2087 * To fix 2. clear the HCI's can_wake flag, this way the HCI 2088 * will still be autosuspended when it is not open. 2089 * 2090 * -- 2091 * 2092 * Because these are widespread problems we prefer generic solutions; so 2093 * apply this initialization quirk to every controller that gets here, 2094 * it should be harmless. The alternative is to not work at all. 2095 */ 2096 pm_runtime_allow(&data->udev->dev); 2097 2098 ret = pm_runtime_suspend(&data->udev->dev); 2099 if (ret >= 0) 2100 msleep(200); 2101 else 2102 bt_dev_warn(hdev, "CSR: Couldn't suspend the device for our Barrot 8041a02 receive-issue workaround"); 2103 2104 pm_runtime_forbid(&data->udev->dev); 2105 2106 device_set_wakeup_capable(&data->udev->dev, false); 2107 2108 /* Re-enable autosuspend if this was requested */ 2109 if (enable_autosuspend) 2110 usb_enable_autosuspend(data->udev); 2111 } 2112 2113 kfree_skb(skb); 2114 2115 return 0; 2116 } 2117 2118 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode) 2119 { 2120 struct sk_buff *skb; 2121 struct hci_event_hdr *hdr; 2122 struct hci_ev_cmd_complete *evt; 2123 2124 skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_KERNEL); 2125 if (!skb) 2126 return -ENOMEM; 2127 2128 hdr = skb_put(skb, sizeof(*hdr)); 2129 hdr->evt = HCI_EV_CMD_COMPLETE; 2130 hdr->plen = sizeof(*evt) + 1; 2131 2132 evt = skb_put(skb, sizeof(*evt)); 2133 evt->ncmd = 0x01; 2134 evt->opcode = cpu_to_le16(opcode); 2135 2136 skb_put_u8(skb, 0x00); 2137 2138 hci_skb_pkt_type(skb) = HCI_EVENT_PKT; 2139 2140 return hci_recv_frame(hdev, skb); 2141 } 2142 2143 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer, 2144 int count) 2145 { 2146 struct hci_dev *hdev = data->hdev; 2147 2148 /* When the device is in bootloader mode, then it can send 2149 * events via the bulk endpoint. These events are treated the 2150 * same way as the ones received from the interrupt endpoint. 2151 */ 2152 if (btintel_test_flag(hdev, INTEL_BOOTLOADER)) 2153 return btusb_recv_intr(data, buffer, count); 2154 2155 return btusb_recv_bulk(data, buffer, count); 2156 } 2157 2158 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb) 2159 { 2160 if (btintel_test_flag(hdev, INTEL_BOOTLOADER)) { 2161 struct hci_event_hdr *hdr = (void *)skb->data; 2162 2163 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff && 2164 hdr->plen > 0) { 2165 const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1; 2166 unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1; 2167 2168 switch (skb->data[2]) { 2169 case 0x02: 2170 /* When switching to the operational firmware 2171 * the device sends a vendor specific event 2172 * indicating that the bootup completed. 2173 */ 2174 btintel_bootup(hdev, ptr, len); 2175 break; 2176 case 0x06: 2177 /* When the firmware loading completes the 2178 * device sends out a vendor specific event 2179 * indicating the result of the firmware 2180 * loading. 2181 */ 2182 btintel_secure_send_result(hdev, ptr, len); 2183 break; 2184 } 2185 } 2186 } 2187 2188 return hci_recv_frame(hdev, skb); 2189 } 2190 2191 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb) 2192 { 2193 struct urb *urb; 2194 2195 BT_DBG("%s", hdev->name); 2196 2197 switch (hci_skb_pkt_type(skb)) { 2198 case HCI_COMMAND_PKT: 2199 if (btintel_test_flag(hdev, INTEL_BOOTLOADER)) { 2200 struct hci_command_hdr *cmd = (void *)skb->data; 2201 __u16 opcode = le16_to_cpu(cmd->opcode); 2202 2203 /* When in bootloader mode and the command 0xfc09 2204 * is received, it needs to be send down the 2205 * bulk endpoint. So allocate a bulk URB instead. 2206 */ 2207 if (opcode == 0xfc09) 2208 urb = alloc_bulk_urb(hdev, skb); 2209 else 2210 urb = alloc_ctrl_urb(hdev, skb); 2211 2212 /* When the 0xfc01 command is issued to boot into 2213 * the operational firmware, it will actually not 2214 * send a command complete event. To keep the flow 2215 * control working inject that event here. 2216 */ 2217 if (opcode == 0xfc01) 2218 inject_cmd_complete(hdev, opcode); 2219 } else { 2220 urb = alloc_ctrl_urb(hdev, skb); 2221 } 2222 if (IS_ERR(urb)) 2223 return PTR_ERR(urb); 2224 2225 hdev->stat.cmd_tx++; 2226 return submit_or_queue_tx_urb(hdev, urb); 2227 2228 case HCI_ACLDATA_PKT: 2229 urb = alloc_bulk_urb(hdev, skb); 2230 if (IS_ERR(urb)) 2231 return PTR_ERR(urb); 2232 2233 hdev->stat.acl_tx++; 2234 return submit_or_queue_tx_urb(hdev, urb); 2235 2236 case HCI_SCODATA_PKT: 2237 if (hci_conn_num(hdev, SCO_LINK) < 1) 2238 return -ENODEV; 2239 2240 urb = alloc_isoc_urb(hdev, skb); 2241 if (IS_ERR(urb)) 2242 return PTR_ERR(urb); 2243 2244 hdev->stat.sco_tx++; 2245 return submit_tx_urb(hdev, urb); 2246 } 2247 2248 return -EILSEQ; 2249 } 2250 2251 /* UHW CR mapping */ 2252 #define MTK_BT_MISC 0x70002510 2253 #define MTK_BT_SUBSYS_RST 0x70002610 2254 #define MTK_UDMA_INT_STA_BT 0x74000024 2255 #define MTK_UDMA_INT_STA_BT1 0x74000308 2256 #define MTK_BT_WDT_STATUS 0x740003A0 2257 #define MTK_EP_RST_OPT 0x74011890 2258 #define MTK_EP_RST_IN_OUT_OPT 0x00010001 2259 #define MTK_BT_RST_DONE 0x00000100 2260 #define MTK_BT_RESET_WAIT_MS 100 2261 #define MTK_BT_RESET_NUM_TRIES 10 2262 2263 static void btusb_mtk_wmt_recv(struct urb *urb) 2264 { 2265 struct hci_dev *hdev = urb->context; 2266 struct btusb_data *data = hci_get_drvdata(hdev); 2267 struct sk_buff *skb; 2268 int err; 2269 2270 if (urb->status == 0 && urb->actual_length > 0) { 2271 hdev->stat.byte_rx += urb->actual_length; 2272 2273 /* WMT event shouldn't be fragmented and the size should be 2274 * less than HCI_WMT_MAX_EVENT_SIZE. 2275 */ 2276 skb = bt_skb_alloc(HCI_WMT_MAX_EVENT_SIZE, GFP_ATOMIC); 2277 if (!skb) { 2278 hdev->stat.err_rx++; 2279 kfree(urb->setup_packet); 2280 return; 2281 } 2282 2283 hci_skb_pkt_type(skb) = HCI_EVENT_PKT; 2284 skb_put_data(skb, urb->transfer_buffer, urb->actual_length); 2285 2286 /* When someone waits for the WMT event, the skb is being cloned 2287 * and being processed the events from there then. 2288 */ 2289 if (test_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags)) { 2290 data->evt_skb = skb_clone(skb, GFP_ATOMIC); 2291 if (!data->evt_skb) { 2292 kfree_skb(skb); 2293 kfree(urb->setup_packet); 2294 return; 2295 } 2296 } 2297 2298 err = hci_recv_frame(hdev, skb); 2299 if (err < 0) { 2300 kfree_skb(data->evt_skb); 2301 data->evt_skb = NULL; 2302 kfree(urb->setup_packet); 2303 return; 2304 } 2305 2306 if (test_and_clear_bit(BTUSB_TX_WAIT_VND_EVT, 2307 &data->flags)) { 2308 /* Barrier to sync with other CPUs */ 2309 smp_mb__after_atomic(); 2310 wake_up_bit(&data->flags, 2311 BTUSB_TX_WAIT_VND_EVT); 2312 } 2313 kfree(urb->setup_packet); 2314 return; 2315 } else if (urb->status == -ENOENT) { 2316 /* Avoid suspend failed when usb_kill_urb */ 2317 return; 2318 } 2319 2320 usb_mark_last_busy(data->udev); 2321 2322 /* The URB complete handler is still called with urb->actual_length = 0 2323 * when the event is not available, so we should keep re-submitting 2324 * URB until WMT event returns, Also, It's necessary to wait some time 2325 * between the two consecutive control URBs to relax the target device 2326 * to generate the event. Otherwise, the WMT event cannot return from 2327 * the device successfully. 2328 */ 2329 udelay(500); 2330 2331 usb_anchor_urb(urb, &data->ctrl_anchor); 2332 err = usb_submit_urb(urb, GFP_ATOMIC); 2333 if (err < 0) { 2334 kfree(urb->setup_packet); 2335 /* -EPERM: urb is being killed; 2336 * -ENODEV: device got disconnected 2337 */ 2338 if (err != -EPERM && err != -ENODEV) 2339 bt_dev_err(hdev, "urb %p failed to resubmit (%d)", 2340 urb, -err); 2341 usb_unanchor_urb(urb); 2342 } 2343 } 2344 2345 static int btusb_mtk_submit_wmt_recv_urb(struct hci_dev *hdev) 2346 { 2347 struct btusb_data *data = hci_get_drvdata(hdev); 2348 struct usb_ctrlrequest *dr; 2349 unsigned char *buf; 2350 int err, size = 64; 2351 unsigned int pipe; 2352 struct urb *urb; 2353 2354 urb = usb_alloc_urb(0, GFP_KERNEL); 2355 if (!urb) 2356 return -ENOMEM; 2357 2358 dr = kmalloc(sizeof(*dr), GFP_KERNEL); 2359 if (!dr) { 2360 usb_free_urb(urb); 2361 return -ENOMEM; 2362 } 2363 2364 dr->bRequestType = USB_TYPE_VENDOR | USB_DIR_IN; 2365 dr->bRequest = 1; 2366 dr->wIndex = cpu_to_le16(0); 2367 dr->wValue = cpu_to_le16(48); 2368 dr->wLength = cpu_to_le16(size); 2369 2370 buf = kmalloc(size, GFP_KERNEL); 2371 if (!buf) { 2372 kfree(dr); 2373 usb_free_urb(urb); 2374 return -ENOMEM; 2375 } 2376 2377 pipe = usb_rcvctrlpipe(data->udev, 0); 2378 2379 usb_fill_control_urb(urb, data->udev, pipe, (void *)dr, 2380 buf, size, btusb_mtk_wmt_recv, hdev); 2381 2382 urb->transfer_flags |= URB_FREE_BUFFER; 2383 2384 usb_anchor_urb(urb, &data->ctrl_anchor); 2385 err = usb_submit_urb(urb, GFP_KERNEL); 2386 if (err < 0) { 2387 if (err != -EPERM && err != -ENODEV) 2388 bt_dev_err(hdev, "urb %p submission failed (%d)", 2389 urb, -err); 2390 usb_unanchor_urb(urb); 2391 } 2392 2393 usb_free_urb(urb); 2394 2395 return err; 2396 } 2397 2398 static int btusb_mtk_hci_wmt_sync(struct hci_dev *hdev, 2399 struct btmtk_hci_wmt_params *wmt_params) 2400 { 2401 struct btusb_data *data = hci_get_drvdata(hdev); 2402 struct btmtk_hci_wmt_evt_funcc *wmt_evt_funcc; 2403 u32 hlen, status = BTMTK_WMT_INVALID; 2404 struct btmtk_hci_wmt_evt *wmt_evt; 2405 struct btmtk_hci_wmt_cmd *wc; 2406 struct btmtk_wmt_hdr *hdr; 2407 int err; 2408 2409 /* Send the WMT command and wait until the WMT event returns */ 2410 hlen = sizeof(*hdr) + wmt_params->dlen; 2411 if (hlen > 255) 2412 return -EINVAL; 2413 2414 wc = kzalloc(hlen, GFP_KERNEL); 2415 if (!wc) 2416 return -ENOMEM; 2417 2418 hdr = &wc->hdr; 2419 hdr->dir = 1; 2420 hdr->op = wmt_params->op; 2421 hdr->dlen = cpu_to_le16(wmt_params->dlen + 1); 2422 hdr->flag = wmt_params->flag; 2423 memcpy(wc->data, wmt_params->data, wmt_params->dlen); 2424 2425 set_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags); 2426 2427 err = __hci_cmd_send(hdev, 0xfc6f, hlen, wc); 2428 2429 if (err < 0) { 2430 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags); 2431 goto err_free_wc; 2432 } 2433 2434 /* Submit control IN URB on demand to process the WMT event */ 2435 err = btusb_mtk_submit_wmt_recv_urb(hdev); 2436 if (err < 0) 2437 goto err_free_wc; 2438 2439 /* The vendor specific WMT commands are all answered by a vendor 2440 * specific event and will have the Command Status or Command 2441 * Complete as with usual HCI command flow control. 2442 * 2443 * After sending the command, wait for BTUSB_TX_WAIT_VND_EVT 2444 * state to be cleared. The driver specific event receive routine 2445 * will clear that state and with that indicate completion of the 2446 * WMT command. 2447 */ 2448 err = wait_on_bit_timeout(&data->flags, BTUSB_TX_WAIT_VND_EVT, 2449 TASK_INTERRUPTIBLE, HCI_INIT_TIMEOUT); 2450 if (err == -EINTR) { 2451 bt_dev_err(hdev, "Execution of wmt command interrupted"); 2452 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags); 2453 goto err_free_wc; 2454 } 2455 2456 if (err) { 2457 bt_dev_err(hdev, "Execution of wmt command timed out"); 2458 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags); 2459 err = -ETIMEDOUT; 2460 goto err_free_wc; 2461 } 2462 2463 /* Parse and handle the return WMT event */ 2464 wmt_evt = (struct btmtk_hci_wmt_evt *)data->evt_skb->data; 2465 if (wmt_evt->whdr.op != hdr->op) { 2466 bt_dev_err(hdev, "Wrong op received %d expected %d", 2467 wmt_evt->whdr.op, hdr->op); 2468 err = -EIO; 2469 goto err_free_skb; 2470 } 2471 2472 switch (wmt_evt->whdr.op) { 2473 case BTMTK_WMT_SEMAPHORE: 2474 if (wmt_evt->whdr.flag == 2) 2475 status = BTMTK_WMT_PATCH_UNDONE; 2476 else 2477 status = BTMTK_WMT_PATCH_DONE; 2478 break; 2479 case BTMTK_WMT_FUNC_CTRL: 2480 wmt_evt_funcc = (struct btmtk_hci_wmt_evt_funcc *)wmt_evt; 2481 if (be16_to_cpu(wmt_evt_funcc->status) == 0x404) 2482 status = BTMTK_WMT_ON_DONE; 2483 else if (be16_to_cpu(wmt_evt_funcc->status) == 0x420) 2484 status = BTMTK_WMT_ON_PROGRESS; 2485 else 2486 status = BTMTK_WMT_ON_UNDONE; 2487 break; 2488 case BTMTK_WMT_PATCH_DWNLD: 2489 if (wmt_evt->whdr.flag == 2) 2490 status = BTMTK_WMT_PATCH_DONE; 2491 else if (wmt_evt->whdr.flag == 1) 2492 status = BTMTK_WMT_PATCH_PROGRESS; 2493 else 2494 status = BTMTK_WMT_PATCH_UNDONE; 2495 break; 2496 } 2497 2498 if (wmt_params->status) 2499 *wmt_params->status = status; 2500 2501 err_free_skb: 2502 kfree_skb(data->evt_skb); 2503 data->evt_skb = NULL; 2504 err_free_wc: 2505 kfree(wc); 2506 return err; 2507 } 2508 2509 static int btusb_mtk_func_query(struct hci_dev *hdev) 2510 { 2511 struct btmtk_hci_wmt_params wmt_params; 2512 int status, err; 2513 u8 param = 0; 2514 2515 /* Query whether the function is enabled */ 2516 wmt_params.op = BTMTK_WMT_FUNC_CTRL; 2517 wmt_params.flag = 4; 2518 wmt_params.dlen = sizeof(param); 2519 wmt_params.data = ¶m; 2520 wmt_params.status = &status; 2521 2522 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params); 2523 if (err < 0) { 2524 bt_dev_err(hdev, "Failed to query function status (%d)", err); 2525 return err; 2526 } 2527 2528 return status; 2529 } 2530 2531 static int btusb_mtk_uhw_reg_write(struct btusb_data *data, u32 reg, u32 val) 2532 { 2533 struct hci_dev *hdev = data->hdev; 2534 int pipe, err; 2535 void *buf; 2536 2537 buf = kzalloc(4, GFP_KERNEL); 2538 if (!buf) 2539 return -ENOMEM; 2540 2541 put_unaligned_le32(val, buf); 2542 2543 pipe = usb_sndctrlpipe(data->udev, 0); 2544 err = usb_control_msg(data->udev, pipe, 0x02, 2545 0x5E, 2546 reg >> 16, reg & 0xffff, 2547 buf, 4, USB_CTRL_SET_TIMEOUT); 2548 if (err < 0) { 2549 bt_dev_err(hdev, "Failed to write uhw reg(%d)", err); 2550 goto err_free_buf; 2551 } 2552 2553 err_free_buf: 2554 kfree(buf); 2555 2556 return err; 2557 } 2558 2559 static int btusb_mtk_uhw_reg_read(struct btusb_data *data, u32 reg, u32 *val) 2560 { 2561 struct hci_dev *hdev = data->hdev; 2562 int pipe, err; 2563 void *buf; 2564 2565 buf = kzalloc(4, GFP_KERNEL); 2566 if (!buf) 2567 return -ENOMEM; 2568 2569 pipe = usb_rcvctrlpipe(data->udev, 0); 2570 err = usb_control_msg(data->udev, pipe, 0x01, 2571 0xDE, 2572 reg >> 16, reg & 0xffff, 2573 buf, 4, USB_CTRL_SET_TIMEOUT); 2574 if (err < 0) { 2575 bt_dev_err(hdev, "Failed to read uhw reg(%d)", err); 2576 goto err_free_buf; 2577 } 2578 2579 *val = get_unaligned_le32(buf); 2580 bt_dev_dbg(hdev, "reg=%x, value=0x%08x", reg, *val); 2581 2582 err_free_buf: 2583 kfree(buf); 2584 2585 return err; 2586 } 2587 2588 static int btusb_mtk_reg_read(struct btusb_data *data, u32 reg, u32 *val) 2589 { 2590 int pipe, err, size = sizeof(u32); 2591 void *buf; 2592 2593 buf = kzalloc(size, GFP_KERNEL); 2594 if (!buf) 2595 return -ENOMEM; 2596 2597 pipe = usb_rcvctrlpipe(data->udev, 0); 2598 err = usb_control_msg(data->udev, pipe, 0x63, 2599 USB_TYPE_VENDOR | USB_DIR_IN, 2600 reg >> 16, reg & 0xffff, 2601 buf, size, USB_CTRL_SET_TIMEOUT); 2602 if (err < 0) 2603 goto err_free_buf; 2604 2605 *val = get_unaligned_le32(buf); 2606 2607 err_free_buf: 2608 kfree(buf); 2609 2610 return err; 2611 } 2612 2613 static int btusb_mtk_id_get(struct btusb_data *data, u32 reg, u32 *id) 2614 { 2615 return btusb_mtk_reg_read(data, reg, id); 2616 } 2617 2618 static int btusb_mtk_setup(struct hci_dev *hdev) 2619 { 2620 struct btusb_data *data = hci_get_drvdata(hdev); 2621 struct btmtk_hci_wmt_params wmt_params; 2622 ktime_t calltime, delta, rettime; 2623 struct btmtk_tci_sleep tci_sleep; 2624 unsigned long long duration; 2625 struct sk_buff *skb; 2626 const char *fwname; 2627 int err, status; 2628 u32 dev_id; 2629 char fw_bin_name[64]; 2630 u32 fw_version = 0; 2631 u8 param; 2632 2633 calltime = ktime_get(); 2634 2635 err = btusb_mtk_id_get(data, 0x80000008, &dev_id); 2636 if (err < 0) { 2637 bt_dev_err(hdev, "Failed to get device id (%d)", err); 2638 return err; 2639 } 2640 2641 if (!dev_id) { 2642 err = btusb_mtk_id_get(data, 0x70010200, &dev_id); 2643 if (err < 0) { 2644 bt_dev_err(hdev, "Failed to get device id (%d)", err); 2645 return err; 2646 } 2647 err = btusb_mtk_id_get(data, 0x80021004, &fw_version); 2648 if (err < 0) { 2649 bt_dev_err(hdev, "Failed to get fw version (%d)", err); 2650 return err; 2651 } 2652 } 2653 2654 switch (dev_id) { 2655 case 0x7663: 2656 fwname = FIRMWARE_MT7663; 2657 break; 2658 case 0x7668: 2659 fwname = FIRMWARE_MT7668; 2660 break; 2661 case 0x7922: 2662 case 0x7961: 2663 snprintf(fw_bin_name, sizeof(fw_bin_name), 2664 "mediatek/BT_RAM_CODE_MT%04x_1_%x_hdr.bin", 2665 dev_id & 0xffff, (fw_version & 0xff) + 1); 2666 err = btmtk_setup_firmware_79xx(hdev, fw_bin_name, 2667 btusb_mtk_hci_wmt_sync); 2668 if (err < 0) { 2669 bt_dev_err(hdev, "Failed to set up firmware (%d)", err); 2670 return err; 2671 } 2672 2673 /* It's Device EndPoint Reset Option Register */ 2674 btusb_mtk_uhw_reg_write(data, MTK_EP_RST_OPT, MTK_EP_RST_IN_OUT_OPT); 2675 2676 /* Enable Bluetooth protocol */ 2677 param = 1; 2678 wmt_params.op = BTMTK_WMT_FUNC_CTRL; 2679 wmt_params.flag = 0; 2680 wmt_params.dlen = sizeof(param); 2681 wmt_params.data = ¶m; 2682 wmt_params.status = NULL; 2683 2684 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params); 2685 if (err < 0) { 2686 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err); 2687 return err; 2688 } 2689 2690 hci_set_msft_opcode(hdev, 0xFD30); 2691 hci_set_aosp_capable(hdev); 2692 goto done; 2693 default: 2694 bt_dev_err(hdev, "Unsupported hardware variant (%08x)", 2695 dev_id); 2696 return -ENODEV; 2697 } 2698 2699 /* Query whether the firmware is already download */ 2700 wmt_params.op = BTMTK_WMT_SEMAPHORE; 2701 wmt_params.flag = 1; 2702 wmt_params.dlen = 0; 2703 wmt_params.data = NULL; 2704 wmt_params.status = &status; 2705 2706 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params); 2707 if (err < 0) { 2708 bt_dev_err(hdev, "Failed to query firmware status (%d)", err); 2709 return err; 2710 } 2711 2712 if (status == BTMTK_WMT_PATCH_DONE) { 2713 bt_dev_info(hdev, "firmware already downloaded"); 2714 goto ignore_setup_fw; 2715 } 2716 2717 /* Setup a firmware which the device definitely requires */ 2718 err = btmtk_setup_firmware(hdev, fwname, 2719 btusb_mtk_hci_wmt_sync); 2720 if (err < 0) 2721 return err; 2722 2723 ignore_setup_fw: 2724 err = readx_poll_timeout(btusb_mtk_func_query, hdev, status, 2725 status < 0 || status != BTMTK_WMT_ON_PROGRESS, 2726 2000, 5000000); 2727 /* -ETIMEDOUT happens */ 2728 if (err < 0) 2729 return err; 2730 2731 /* The other errors happen in btusb_mtk_func_query */ 2732 if (status < 0) 2733 return status; 2734 2735 if (status == BTMTK_WMT_ON_DONE) { 2736 bt_dev_info(hdev, "function already on"); 2737 goto ignore_func_on; 2738 } 2739 2740 /* Enable Bluetooth protocol */ 2741 param = 1; 2742 wmt_params.op = BTMTK_WMT_FUNC_CTRL; 2743 wmt_params.flag = 0; 2744 wmt_params.dlen = sizeof(param); 2745 wmt_params.data = ¶m; 2746 wmt_params.status = NULL; 2747 2748 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params); 2749 if (err < 0) { 2750 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err); 2751 return err; 2752 } 2753 2754 ignore_func_on: 2755 /* Apply the low power environment setup */ 2756 tci_sleep.mode = 0x5; 2757 tci_sleep.duration = cpu_to_le16(0x640); 2758 tci_sleep.host_duration = cpu_to_le16(0x640); 2759 tci_sleep.host_wakeup_pin = 0; 2760 tci_sleep.time_compensation = 0; 2761 2762 skb = __hci_cmd_sync(hdev, 0xfc7a, sizeof(tci_sleep), &tci_sleep, 2763 HCI_INIT_TIMEOUT); 2764 if (IS_ERR(skb)) { 2765 err = PTR_ERR(skb); 2766 bt_dev_err(hdev, "Failed to apply low power setting (%d)", err); 2767 return err; 2768 } 2769 kfree_skb(skb); 2770 2771 done: 2772 rettime = ktime_get(); 2773 delta = ktime_sub(rettime, calltime); 2774 duration = (unsigned long long)ktime_to_ns(delta) >> 10; 2775 2776 bt_dev_info(hdev, "Device setup in %llu usecs", duration); 2777 2778 return 0; 2779 } 2780 2781 static int btusb_mtk_shutdown(struct hci_dev *hdev) 2782 { 2783 struct btmtk_hci_wmt_params wmt_params; 2784 u8 param = 0; 2785 int err; 2786 2787 /* Disable the device */ 2788 wmt_params.op = BTMTK_WMT_FUNC_CTRL; 2789 wmt_params.flag = 0; 2790 wmt_params.dlen = sizeof(param); 2791 wmt_params.data = ¶m; 2792 wmt_params.status = NULL; 2793 2794 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params); 2795 if (err < 0) { 2796 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err); 2797 return err; 2798 } 2799 2800 return 0; 2801 } 2802 2803 static void btusb_mtk_cmd_timeout(struct hci_dev *hdev) 2804 { 2805 struct btusb_data *data = hci_get_drvdata(hdev); 2806 u32 val; 2807 int err, retry = 0; 2808 2809 /* It's MediaTek specific bluetooth reset mechanism via USB */ 2810 if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) { 2811 bt_dev_err(hdev, "last reset failed? Not resetting again"); 2812 return; 2813 } 2814 2815 err = usb_autopm_get_interface(data->intf); 2816 if (err < 0) 2817 return; 2818 2819 btusb_stop_traffic(data); 2820 usb_kill_anchored_urbs(&data->tx_anchor); 2821 2822 /* It's Device EndPoint Reset Option Register */ 2823 bt_dev_dbg(hdev, "Initiating reset mechanism via uhw"); 2824 btusb_mtk_uhw_reg_write(data, MTK_EP_RST_OPT, MTK_EP_RST_IN_OUT_OPT); 2825 btusb_mtk_uhw_reg_read(data, MTK_BT_WDT_STATUS, &val); 2826 2827 /* Reset the bluetooth chip via USB interface. */ 2828 btusb_mtk_uhw_reg_write(data, MTK_BT_SUBSYS_RST, 1); 2829 btusb_mtk_uhw_reg_write(data, MTK_UDMA_INT_STA_BT, 0x000000FF); 2830 btusb_mtk_uhw_reg_read(data, MTK_UDMA_INT_STA_BT, &val); 2831 btusb_mtk_uhw_reg_write(data, MTK_UDMA_INT_STA_BT1, 0x000000FF); 2832 btusb_mtk_uhw_reg_read(data, MTK_UDMA_INT_STA_BT1, &val); 2833 /* MT7921 need to delay 20ms between toggle reset bit */ 2834 msleep(20); 2835 btusb_mtk_uhw_reg_write(data, MTK_BT_SUBSYS_RST, 0); 2836 btusb_mtk_uhw_reg_read(data, MTK_BT_SUBSYS_RST, &val); 2837 2838 /* Poll the register until reset is completed */ 2839 do { 2840 btusb_mtk_uhw_reg_read(data, MTK_BT_MISC, &val); 2841 if (val & MTK_BT_RST_DONE) { 2842 bt_dev_dbg(hdev, "Bluetooth Reset Successfully"); 2843 break; 2844 } 2845 2846 bt_dev_dbg(hdev, "Polling Bluetooth Reset CR"); 2847 retry++; 2848 msleep(MTK_BT_RESET_WAIT_MS); 2849 } while (retry < MTK_BT_RESET_NUM_TRIES); 2850 2851 btusb_mtk_id_get(data, 0x70010200, &val); 2852 if (!val) 2853 bt_dev_err(hdev, "Can't get device id, subsys reset fail."); 2854 2855 usb_queue_reset_device(data->intf); 2856 2857 clear_bit(BTUSB_HW_RESET_ACTIVE, &data->flags); 2858 } 2859 2860 static int btusb_recv_acl_mtk(struct hci_dev *hdev, struct sk_buff *skb) 2861 { 2862 struct btusb_data *data = hci_get_drvdata(hdev); 2863 u16 handle = le16_to_cpu(hci_acl_hdr(skb)->handle); 2864 2865 switch (handle) { 2866 case 0xfc6f: /* Firmware dump from device */ 2867 /* When the firmware hangs, the device can no longer 2868 * suspend and thus disable auto-suspend. 2869 */ 2870 usb_disable_autosuspend(data->udev); 2871 fallthrough; 2872 case 0x05ff: /* Firmware debug logging 1 */ 2873 case 0x05fe: /* Firmware debug logging 2 */ 2874 return hci_recv_diag(hdev, skb); 2875 } 2876 2877 return hci_recv_frame(hdev, skb); 2878 } 2879 2880 #ifdef CONFIG_PM 2881 /* Configure an out-of-band gpio as wake-up pin, if specified in device tree */ 2882 static int marvell_config_oob_wake(struct hci_dev *hdev) 2883 { 2884 struct sk_buff *skb; 2885 struct btusb_data *data = hci_get_drvdata(hdev); 2886 struct device *dev = &data->udev->dev; 2887 u16 pin, gap, opcode; 2888 int ret; 2889 u8 cmd[5]; 2890 2891 /* Move on if no wakeup pin specified */ 2892 if (of_property_read_u16(dev->of_node, "marvell,wakeup-pin", &pin) || 2893 of_property_read_u16(dev->of_node, "marvell,wakeup-gap-ms", &gap)) 2894 return 0; 2895 2896 /* Vendor specific command to configure a GPIO as wake-up pin */ 2897 opcode = hci_opcode_pack(0x3F, 0x59); 2898 cmd[0] = opcode & 0xFF; 2899 cmd[1] = opcode >> 8; 2900 cmd[2] = 2; /* length of parameters that follow */ 2901 cmd[3] = pin; 2902 cmd[4] = gap; /* time in ms, for which wakeup pin should be asserted */ 2903 2904 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL); 2905 if (!skb) { 2906 bt_dev_err(hdev, "%s: No memory", __func__); 2907 return -ENOMEM; 2908 } 2909 2910 skb_put_data(skb, cmd, sizeof(cmd)); 2911 hci_skb_pkt_type(skb) = HCI_COMMAND_PKT; 2912 2913 ret = btusb_send_frame(hdev, skb); 2914 if (ret) { 2915 bt_dev_err(hdev, "%s: configuration failed", __func__); 2916 kfree_skb(skb); 2917 return ret; 2918 } 2919 2920 return 0; 2921 } 2922 #endif 2923 2924 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev, 2925 const bdaddr_t *bdaddr) 2926 { 2927 struct sk_buff *skb; 2928 u8 buf[8]; 2929 long ret; 2930 2931 buf[0] = 0xfe; 2932 buf[1] = sizeof(bdaddr_t); 2933 memcpy(buf + 2, bdaddr, sizeof(bdaddr_t)); 2934 2935 skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT); 2936 if (IS_ERR(skb)) { 2937 ret = PTR_ERR(skb); 2938 bt_dev_err(hdev, "changing Marvell device address failed (%ld)", 2939 ret); 2940 return ret; 2941 } 2942 kfree_skb(skb); 2943 2944 return 0; 2945 } 2946 2947 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev, 2948 const bdaddr_t *bdaddr) 2949 { 2950 struct sk_buff *skb; 2951 u8 buf[10]; 2952 long ret; 2953 2954 buf[0] = 0x01; 2955 buf[1] = 0x01; 2956 buf[2] = 0x00; 2957 buf[3] = sizeof(bdaddr_t); 2958 memcpy(buf + 4, bdaddr, sizeof(bdaddr_t)); 2959 2960 skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT); 2961 if (IS_ERR(skb)) { 2962 ret = PTR_ERR(skb); 2963 bt_dev_err(hdev, "Change address command failed (%ld)", ret); 2964 return ret; 2965 } 2966 kfree_skb(skb); 2967 2968 return 0; 2969 } 2970 2971 static int btusb_set_bdaddr_wcn6855(struct hci_dev *hdev, 2972 const bdaddr_t *bdaddr) 2973 { 2974 struct sk_buff *skb; 2975 u8 buf[6]; 2976 long ret; 2977 2978 memcpy(buf, bdaddr, sizeof(bdaddr_t)); 2979 2980 skb = __hci_cmd_sync_ev(hdev, 0xfc14, sizeof(buf), buf, 2981 HCI_EV_CMD_COMPLETE, HCI_INIT_TIMEOUT); 2982 if (IS_ERR(skb)) { 2983 ret = PTR_ERR(skb); 2984 bt_dev_err(hdev, "Change address command failed (%ld)", ret); 2985 return ret; 2986 } 2987 kfree_skb(skb); 2988 2989 return 0; 2990 } 2991 2992 #define QCA_DFU_PACKET_LEN 4096 2993 2994 #define QCA_GET_TARGET_VERSION 0x09 2995 #define QCA_CHECK_STATUS 0x05 2996 #define QCA_DFU_DOWNLOAD 0x01 2997 2998 #define QCA_SYSCFG_UPDATED 0x40 2999 #define QCA_PATCH_UPDATED 0x80 3000 #define QCA_DFU_TIMEOUT 3000 3001 #define QCA_FLAG_MULTI_NVM 0x80 3002 #define QCA_BT_RESET_WAIT_MS 100 3003 3004 #define WCN6855_2_0_RAM_VERSION_GF 0x400c1200 3005 #define WCN6855_2_1_RAM_VERSION_GF 0x400c1211 3006 3007 struct qca_version { 3008 __le32 rom_version; 3009 __le32 patch_version; 3010 __le32 ram_version; 3011 __u8 chip_id; 3012 __u8 platform_id; 3013 __le16 flag; 3014 __u8 reserved[4]; 3015 } __packed; 3016 3017 struct qca_rampatch_version { 3018 __le16 rom_version_high; 3019 __le16 rom_version_low; 3020 __le16 patch_version; 3021 } __packed; 3022 3023 struct qca_device_info { 3024 u32 rom_version; 3025 u8 rampatch_hdr; /* length of header in rampatch */ 3026 u8 nvm_hdr; /* length of header in NVM */ 3027 u8 ver_offset; /* offset of version structure in rampatch */ 3028 }; 3029 3030 static const struct qca_device_info qca_devices_table[] = { 3031 { 0x00000100, 20, 4, 8 }, /* Rome 1.0 */ 3032 { 0x00000101, 20, 4, 8 }, /* Rome 1.1 */ 3033 { 0x00000200, 28, 4, 16 }, /* Rome 2.0 */ 3034 { 0x00000201, 28, 4, 16 }, /* Rome 2.1 */ 3035 { 0x00000300, 28, 4, 16 }, /* Rome 3.0 */ 3036 { 0x00000302, 28, 4, 16 }, /* Rome 3.2 */ 3037 { 0x00130100, 40, 4, 16 }, /* WCN6855 1.0 */ 3038 { 0x00130200, 40, 4, 16 }, /* WCN6855 2.0 */ 3039 { 0x00130201, 40, 4, 16 }, /* WCN6855 2.1 */ 3040 }; 3041 3042 static int btusb_qca_send_vendor_req(struct usb_device *udev, u8 request, 3043 void *data, u16 size) 3044 { 3045 int pipe, err; 3046 u8 *buf; 3047 3048 buf = kmalloc(size, GFP_KERNEL); 3049 if (!buf) 3050 return -ENOMEM; 3051 3052 /* Found some of USB hosts have IOT issues with ours so that we should 3053 * not wait until HCI layer is ready. 3054 */ 3055 pipe = usb_rcvctrlpipe(udev, 0); 3056 err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN, 3057 0, 0, buf, size, USB_CTRL_SET_TIMEOUT); 3058 if (err < 0) { 3059 dev_err(&udev->dev, "Failed to access otp area (%d)", err); 3060 goto done; 3061 } 3062 3063 memcpy(data, buf, size); 3064 3065 done: 3066 kfree(buf); 3067 3068 return err; 3069 } 3070 3071 static int btusb_setup_qca_download_fw(struct hci_dev *hdev, 3072 const struct firmware *firmware, 3073 size_t hdr_size) 3074 { 3075 struct btusb_data *btdata = hci_get_drvdata(hdev); 3076 struct usb_device *udev = btdata->udev; 3077 size_t count, size, sent = 0; 3078 int pipe, len, err; 3079 u8 *buf; 3080 3081 buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL); 3082 if (!buf) 3083 return -ENOMEM; 3084 3085 count = firmware->size; 3086 3087 size = min_t(size_t, count, hdr_size); 3088 memcpy(buf, firmware->data, size); 3089 3090 /* USB patches should go down to controller through USB path 3091 * because binary format fits to go down through USB channel. 3092 * USB control path is for patching headers and USB bulk is for 3093 * patch body. 3094 */ 3095 pipe = usb_sndctrlpipe(udev, 0); 3096 err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR, 3097 0, 0, buf, size, USB_CTRL_SET_TIMEOUT); 3098 if (err < 0) { 3099 bt_dev_err(hdev, "Failed to send headers (%d)", err); 3100 goto done; 3101 } 3102 3103 sent += size; 3104 count -= size; 3105 3106 /* ep2 need time to switch from function acl to function dfu, 3107 * so we add 20ms delay here. 3108 */ 3109 msleep(20); 3110 3111 while (count) { 3112 size = min_t(size_t, count, QCA_DFU_PACKET_LEN); 3113 3114 memcpy(buf, firmware->data + sent, size); 3115 3116 pipe = usb_sndbulkpipe(udev, 0x02); 3117 err = usb_bulk_msg(udev, pipe, buf, size, &len, 3118 QCA_DFU_TIMEOUT); 3119 if (err < 0) { 3120 bt_dev_err(hdev, "Failed to send body at %zd of %zd (%d)", 3121 sent, firmware->size, err); 3122 break; 3123 } 3124 3125 if (size != len) { 3126 bt_dev_err(hdev, "Failed to get bulk buffer"); 3127 err = -EILSEQ; 3128 break; 3129 } 3130 3131 sent += size; 3132 count -= size; 3133 } 3134 3135 done: 3136 kfree(buf); 3137 return err; 3138 } 3139 3140 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev, 3141 struct qca_version *ver, 3142 const struct qca_device_info *info) 3143 { 3144 struct qca_rampatch_version *rver; 3145 const struct firmware *fw; 3146 u32 ver_rom, ver_patch, rver_rom; 3147 u16 rver_rom_low, rver_rom_high, rver_patch; 3148 char fwname[64]; 3149 int err; 3150 3151 ver_rom = le32_to_cpu(ver->rom_version); 3152 ver_patch = le32_to_cpu(ver->patch_version); 3153 3154 snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom); 3155 3156 err = request_firmware(&fw, fwname, &hdev->dev); 3157 if (err) { 3158 bt_dev_err(hdev, "failed to request rampatch file: %s (%d)", 3159 fwname, err); 3160 return err; 3161 } 3162 3163 bt_dev_info(hdev, "using rampatch file: %s", fwname); 3164 3165 rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset); 3166 rver_rom_low = le16_to_cpu(rver->rom_version_low); 3167 rver_patch = le16_to_cpu(rver->patch_version); 3168 3169 if (ver_rom & ~0xffffU) { 3170 rver_rom_high = le16_to_cpu(rver->rom_version_high); 3171 rver_rom = le32_to_cpu(rver_rom_high << 16 | rver_rom_low); 3172 } else { 3173 rver_rom = rver_rom_low; 3174 } 3175 3176 bt_dev_info(hdev, "QCA: patch rome 0x%x build 0x%x, " 3177 "firmware rome 0x%x build 0x%x", 3178 rver_rom, rver_patch, ver_rom, ver_patch); 3179 3180 if (rver_rom != ver_rom || rver_patch <= ver_patch) { 3181 bt_dev_err(hdev, "rampatch file version did not match with firmware"); 3182 err = -EINVAL; 3183 goto done; 3184 } 3185 3186 err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr); 3187 3188 done: 3189 release_firmware(fw); 3190 3191 return err; 3192 } 3193 3194 static void btusb_generate_qca_nvm_name(char *fwname, size_t max_size, 3195 const struct qca_version *ver) 3196 { 3197 u32 rom_version = le32_to_cpu(ver->rom_version); 3198 u16 flag = le16_to_cpu(ver->flag); 3199 3200 if (((flag >> 8) & 0xff) == QCA_FLAG_MULTI_NVM) { 3201 /* The board_id should be split into two bytes 3202 * The 1st byte is chip ID, and the 2nd byte is platform ID 3203 * For example, board ID 0x010A, 0x01 is platform ID. 0x0A is chip ID 3204 * we have several platforms, and platform IDs are continuously added 3205 * Platform ID: 3206 * 0x00 is for Mobile 3207 * 0x01 is for X86 3208 * 0x02 is for Automotive 3209 * 0x03 is for Consumer electronic 3210 */ 3211 u16 board_id = (ver->chip_id << 8) + ver->platform_id; 3212 const char *variant; 3213 3214 switch (le32_to_cpu(ver->ram_version)) { 3215 case WCN6855_2_0_RAM_VERSION_GF: 3216 case WCN6855_2_1_RAM_VERSION_GF: 3217 variant = "_gf"; 3218 break; 3219 default: 3220 variant = ""; 3221 break; 3222 } 3223 3224 if (board_id == 0) { 3225 snprintf(fwname, max_size, "qca/nvm_usb_%08x%s.bin", 3226 rom_version, variant); 3227 } else { 3228 snprintf(fwname, max_size, "qca/nvm_usb_%08x%s_%04x.bin", 3229 rom_version, variant, board_id); 3230 } 3231 } else { 3232 snprintf(fwname, max_size, "qca/nvm_usb_%08x.bin", 3233 rom_version); 3234 } 3235 3236 } 3237 3238 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev, 3239 struct qca_version *ver, 3240 const struct qca_device_info *info) 3241 { 3242 const struct firmware *fw; 3243 char fwname[64]; 3244 int err; 3245 3246 btusb_generate_qca_nvm_name(fwname, sizeof(fwname), ver); 3247 3248 err = request_firmware(&fw, fwname, &hdev->dev); 3249 if (err) { 3250 bt_dev_err(hdev, "failed to request NVM file: %s (%d)", 3251 fwname, err); 3252 return err; 3253 } 3254 3255 bt_dev_info(hdev, "using NVM file: %s", fwname); 3256 3257 err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr); 3258 3259 release_firmware(fw); 3260 3261 return err; 3262 } 3263 3264 /* identify the ROM version and check whether patches are needed */ 3265 static bool btusb_qca_need_patch(struct usb_device *udev) 3266 { 3267 struct qca_version ver; 3268 3269 if (btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver, 3270 sizeof(ver)) < 0) 3271 return false; 3272 /* only low ROM versions need patches */ 3273 return !(le32_to_cpu(ver.rom_version) & ~0xffffU); 3274 } 3275 3276 static int btusb_setup_qca(struct hci_dev *hdev) 3277 { 3278 struct btusb_data *btdata = hci_get_drvdata(hdev); 3279 struct usb_device *udev = btdata->udev; 3280 const struct qca_device_info *info = NULL; 3281 struct qca_version ver; 3282 u32 ver_rom; 3283 u8 status; 3284 int i, err; 3285 3286 err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver, 3287 sizeof(ver)); 3288 if (err < 0) 3289 return err; 3290 3291 ver_rom = le32_to_cpu(ver.rom_version); 3292 3293 for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) { 3294 if (ver_rom == qca_devices_table[i].rom_version) 3295 info = &qca_devices_table[i]; 3296 } 3297 if (!info) { 3298 /* If the rom_version is not matched in the qca_devices_table 3299 * and the high ROM version is not zero, we assume this chip no 3300 * need to load the rampatch and nvm. 3301 */ 3302 if (ver_rom & ~0xffffU) 3303 return 0; 3304 3305 bt_dev_err(hdev, "don't support firmware rome 0x%x", ver_rom); 3306 return -ENODEV; 3307 } 3308 3309 err = btusb_qca_send_vendor_req(udev, QCA_CHECK_STATUS, &status, 3310 sizeof(status)); 3311 if (err < 0) 3312 return err; 3313 3314 if (!(status & QCA_PATCH_UPDATED)) { 3315 err = btusb_setup_qca_load_rampatch(hdev, &ver, info); 3316 if (err < 0) 3317 return err; 3318 } 3319 3320 err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver, 3321 sizeof(ver)); 3322 if (err < 0) 3323 return err; 3324 3325 if (!(status & QCA_SYSCFG_UPDATED)) { 3326 err = btusb_setup_qca_load_nvm(hdev, &ver, info); 3327 if (err < 0) 3328 return err; 3329 3330 /* WCN6855 2.1 will reset to apply firmware downloaded here, so 3331 * wait ~100ms for reset Done then go ahead, otherwise, it maybe 3332 * cause potential enable failure. 3333 */ 3334 if (info->rom_version == 0x00130201) 3335 msleep(QCA_BT_RESET_WAIT_MS); 3336 } 3337 3338 return 0; 3339 } 3340 3341 static inline int __set_diag_interface(struct hci_dev *hdev) 3342 { 3343 struct btusb_data *data = hci_get_drvdata(hdev); 3344 struct usb_interface *intf = data->diag; 3345 int i; 3346 3347 if (!data->diag) 3348 return -ENODEV; 3349 3350 data->diag_tx_ep = NULL; 3351 data->diag_rx_ep = NULL; 3352 3353 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { 3354 struct usb_endpoint_descriptor *ep_desc; 3355 3356 ep_desc = &intf->cur_altsetting->endpoint[i].desc; 3357 3358 if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) { 3359 data->diag_tx_ep = ep_desc; 3360 continue; 3361 } 3362 3363 if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) { 3364 data->diag_rx_ep = ep_desc; 3365 continue; 3366 } 3367 } 3368 3369 if (!data->diag_tx_ep || !data->diag_rx_ep) { 3370 bt_dev_err(hdev, "invalid diagnostic descriptors"); 3371 return -ENODEV; 3372 } 3373 3374 return 0; 3375 } 3376 3377 static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable) 3378 { 3379 struct btusb_data *data = hci_get_drvdata(hdev); 3380 struct sk_buff *skb; 3381 struct urb *urb; 3382 unsigned int pipe; 3383 3384 if (!data->diag_tx_ep) 3385 return ERR_PTR(-ENODEV); 3386 3387 urb = usb_alloc_urb(0, GFP_KERNEL); 3388 if (!urb) 3389 return ERR_PTR(-ENOMEM); 3390 3391 skb = bt_skb_alloc(2, GFP_KERNEL); 3392 if (!skb) { 3393 usb_free_urb(urb); 3394 return ERR_PTR(-ENOMEM); 3395 } 3396 3397 skb_put_u8(skb, 0xf0); 3398 skb_put_u8(skb, enable); 3399 3400 pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress); 3401 3402 usb_fill_bulk_urb(urb, data->udev, pipe, 3403 skb->data, skb->len, btusb_tx_complete, skb); 3404 3405 skb->dev = (void *)hdev; 3406 3407 return urb; 3408 } 3409 3410 static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable) 3411 { 3412 struct btusb_data *data = hci_get_drvdata(hdev); 3413 struct urb *urb; 3414 3415 if (!data->diag) 3416 return -ENODEV; 3417 3418 if (!test_bit(HCI_RUNNING, &hdev->flags)) 3419 return -ENETDOWN; 3420 3421 urb = alloc_diag_urb(hdev, enable); 3422 if (IS_ERR(urb)) 3423 return PTR_ERR(urb); 3424 3425 return submit_or_queue_tx_urb(hdev, urb); 3426 } 3427 3428 #ifdef CONFIG_PM 3429 static irqreturn_t btusb_oob_wake_handler(int irq, void *priv) 3430 { 3431 struct btusb_data *data = priv; 3432 3433 pm_wakeup_event(&data->udev->dev, 0); 3434 pm_system_wakeup(); 3435 3436 /* Disable only if not already disabled (keep it balanced) */ 3437 if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) { 3438 disable_irq_nosync(irq); 3439 disable_irq_wake(irq); 3440 } 3441 return IRQ_HANDLED; 3442 } 3443 3444 static const struct of_device_id btusb_match_table[] = { 3445 { .compatible = "usb1286,204e" }, 3446 { .compatible = "usbcf3,e300" }, /* QCA6174A */ 3447 { .compatible = "usb4ca,301a" }, /* QCA6174A (Lite-On) */ 3448 { } 3449 }; 3450 MODULE_DEVICE_TABLE(of, btusb_match_table); 3451 3452 /* Use an oob wakeup pin? */ 3453 static int btusb_config_oob_wake(struct hci_dev *hdev) 3454 { 3455 struct btusb_data *data = hci_get_drvdata(hdev); 3456 struct device *dev = &data->udev->dev; 3457 int irq, ret; 3458 3459 clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags); 3460 3461 if (!of_match_device(btusb_match_table, dev)) 3462 return 0; 3463 3464 /* Move on if no IRQ specified */ 3465 irq = of_irq_get_byname(dev->of_node, "wakeup"); 3466 if (irq <= 0) { 3467 bt_dev_dbg(hdev, "%s: no OOB Wakeup IRQ in DT", __func__); 3468 return 0; 3469 } 3470 3471 irq_set_status_flags(irq, IRQ_NOAUTOEN); 3472 ret = devm_request_irq(&hdev->dev, irq, btusb_oob_wake_handler, 3473 0, "OOB Wake-on-BT", data); 3474 if (ret) { 3475 bt_dev_err(hdev, "%s: IRQ request failed", __func__); 3476 return ret; 3477 } 3478 3479 ret = device_init_wakeup(dev, true); 3480 if (ret) { 3481 bt_dev_err(hdev, "%s: failed to init_wakeup", __func__); 3482 return ret; 3483 } 3484 3485 data->oob_wake_irq = irq; 3486 bt_dev_info(hdev, "OOB Wake-on-BT configured at IRQ %u", irq); 3487 return 0; 3488 } 3489 #endif 3490 3491 static void btusb_check_needs_reset_resume(struct usb_interface *intf) 3492 { 3493 if (dmi_check_system(btusb_needs_reset_resume_table)) 3494 interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME; 3495 } 3496 3497 static bool btusb_wakeup(struct hci_dev *hdev) 3498 { 3499 struct btusb_data *data = hci_get_drvdata(hdev); 3500 3501 return device_may_wakeup(&data->udev->dev); 3502 } 3503 3504 static int btusb_shutdown_qca(struct hci_dev *hdev) 3505 { 3506 struct sk_buff *skb; 3507 3508 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT); 3509 if (IS_ERR(skb)) { 3510 bt_dev_err(hdev, "HCI reset during shutdown failed"); 3511 return PTR_ERR(skb); 3512 } 3513 kfree_skb(skb); 3514 3515 return 0; 3516 } 3517 3518 static ssize_t force_poll_sync_read(struct file *file, char __user *user_buf, 3519 size_t count, loff_t *ppos) 3520 { 3521 struct btusb_data *data = file->private_data; 3522 char buf[3]; 3523 3524 buf[0] = data->poll_sync ? 'Y' : 'N'; 3525 buf[1] = '\n'; 3526 buf[2] = '\0'; 3527 return simple_read_from_buffer(user_buf, count, ppos, buf, 2); 3528 } 3529 3530 static ssize_t force_poll_sync_write(struct file *file, 3531 const char __user *user_buf, 3532 size_t count, loff_t *ppos) 3533 { 3534 struct btusb_data *data = file->private_data; 3535 bool enable; 3536 int err; 3537 3538 err = kstrtobool_from_user(user_buf, count, &enable); 3539 if (err) 3540 return err; 3541 3542 /* Only allow changes while the adapter is down */ 3543 if (test_bit(HCI_UP, &data->hdev->flags)) 3544 return -EPERM; 3545 3546 if (data->poll_sync == enable) 3547 return -EALREADY; 3548 3549 data->poll_sync = enable; 3550 3551 return count; 3552 } 3553 3554 static const struct file_operations force_poll_sync_fops = { 3555 .open = simple_open, 3556 .read = force_poll_sync_read, 3557 .write = force_poll_sync_write, 3558 .llseek = default_llseek, 3559 }; 3560 3561 static int btusb_probe(struct usb_interface *intf, 3562 const struct usb_device_id *id) 3563 { 3564 struct usb_endpoint_descriptor *ep_desc; 3565 struct gpio_desc *reset_gpio; 3566 struct btusb_data *data; 3567 struct hci_dev *hdev; 3568 unsigned ifnum_base; 3569 int i, err, priv_size; 3570 3571 BT_DBG("intf %p id %p", intf, id); 3572 3573 /* interface numbers are hardcoded in the spec */ 3574 if (intf->cur_altsetting->desc.bInterfaceNumber != 0) { 3575 if (!(id->driver_info & BTUSB_IFNUM_2)) 3576 return -ENODEV; 3577 if (intf->cur_altsetting->desc.bInterfaceNumber != 2) 3578 return -ENODEV; 3579 } 3580 3581 ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber; 3582 3583 if (!id->driver_info) { 3584 const struct usb_device_id *match; 3585 3586 match = usb_match_id(intf, blacklist_table); 3587 if (match) 3588 id = match; 3589 } 3590 3591 if (id->driver_info == BTUSB_IGNORE) 3592 return -ENODEV; 3593 3594 if (id->driver_info & BTUSB_ATH3012) { 3595 struct usb_device *udev = interface_to_usbdev(intf); 3596 3597 /* Old firmware would otherwise let ath3k driver load 3598 * patch and sysconfig files 3599 */ 3600 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001 && 3601 !btusb_qca_need_patch(udev)) 3602 return -ENODEV; 3603 } 3604 3605 data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL); 3606 if (!data) 3607 return -ENOMEM; 3608 3609 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { 3610 ep_desc = &intf->cur_altsetting->endpoint[i].desc; 3611 3612 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) { 3613 data->intr_ep = ep_desc; 3614 continue; 3615 } 3616 3617 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) { 3618 data->bulk_tx_ep = ep_desc; 3619 continue; 3620 } 3621 3622 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) { 3623 data->bulk_rx_ep = ep_desc; 3624 continue; 3625 } 3626 } 3627 3628 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) 3629 return -ENODEV; 3630 3631 if (id->driver_info & BTUSB_AMP) { 3632 data->cmdreq_type = USB_TYPE_CLASS | 0x01; 3633 data->cmdreq = 0x2b; 3634 } else { 3635 data->cmdreq_type = USB_TYPE_CLASS; 3636 data->cmdreq = 0x00; 3637 } 3638 3639 data->udev = interface_to_usbdev(intf); 3640 data->intf = intf; 3641 3642 INIT_WORK(&data->work, btusb_work); 3643 INIT_WORK(&data->waker, btusb_waker); 3644 INIT_DELAYED_WORK(&data->rx_work, btusb_rx_work); 3645 3646 skb_queue_head_init(&data->acl_q); 3647 3648 init_usb_anchor(&data->deferred); 3649 init_usb_anchor(&data->tx_anchor); 3650 spin_lock_init(&data->txlock); 3651 3652 init_usb_anchor(&data->intr_anchor); 3653 init_usb_anchor(&data->bulk_anchor); 3654 init_usb_anchor(&data->isoc_anchor); 3655 init_usb_anchor(&data->diag_anchor); 3656 init_usb_anchor(&data->ctrl_anchor); 3657 spin_lock_init(&data->rxlock); 3658 3659 priv_size = 0; 3660 3661 data->recv_event = hci_recv_frame; 3662 data->recv_bulk = btusb_recv_bulk; 3663 3664 if (id->driver_info & BTUSB_INTEL_COMBINED) { 3665 /* Allocate extra space for Intel device */ 3666 priv_size += sizeof(struct btintel_data); 3667 3668 /* Override the rx handlers */ 3669 data->recv_event = btusb_recv_event_intel; 3670 data->recv_bulk = btusb_recv_bulk_intel; 3671 } 3672 3673 data->recv_acl = hci_recv_frame; 3674 3675 hdev = hci_alloc_dev_priv(priv_size); 3676 if (!hdev) 3677 return -ENOMEM; 3678 3679 hdev->bus = HCI_USB; 3680 hci_set_drvdata(hdev, data); 3681 3682 if (id->driver_info & BTUSB_AMP) 3683 hdev->dev_type = HCI_AMP; 3684 else 3685 hdev->dev_type = HCI_PRIMARY; 3686 3687 data->hdev = hdev; 3688 3689 SET_HCIDEV_DEV(hdev, &intf->dev); 3690 3691 reset_gpio = gpiod_get_optional(&data->udev->dev, "reset", 3692 GPIOD_OUT_LOW); 3693 if (IS_ERR(reset_gpio)) { 3694 err = PTR_ERR(reset_gpio); 3695 goto out_free_dev; 3696 } else if (reset_gpio) { 3697 data->reset_gpio = reset_gpio; 3698 } 3699 3700 hdev->open = btusb_open; 3701 hdev->close = btusb_close; 3702 hdev->flush = btusb_flush; 3703 hdev->send = btusb_send_frame; 3704 hdev->notify = btusb_notify; 3705 hdev->wakeup = btusb_wakeup; 3706 3707 #ifdef CONFIG_PM 3708 err = btusb_config_oob_wake(hdev); 3709 if (err) 3710 goto out_free_dev; 3711 3712 /* Marvell devices may need a specific chip configuration */ 3713 if (id->driver_info & BTUSB_MARVELL && data->oob_wake_irq) { 3714 err = marvell_config_oob_wake(hdev); 3715 if (err) 3716 goto out_free_dev; 3717 } 3718 #endif 3719 if (id->driver_info & BTUSB_CW6622) 3720 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks); 3721 3722 if (id->driver_info & BTUSB_BCM2045) 3723 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks); 3724 3725 if (id->driver_info & BTUSB_BCM92035) 3726 hdev->setup = btusb_setup_bcm92035; 3727 3728 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) && 3729 (id->driver_info & BTUSB_BCM_PATCHRAM)) { 3730 hdev->manufacturer = 15; 3731 hdev->setup = btbcm_setup_patchram; 3732 hdev->set_diag = btusb_bcm_set_diag; 3733 hdev->set_bdaddr = btbcm_set_bdaddr; 3734 3735 /* Broadcom LM_DIAG Interface numbers are hardcoded */ 3736 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2); 3737 } 3738 3739 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) && 3740 (id->driver_info & BTUSB_BCM_APPLE)) { 3741 hdev->manufacturer = 15; 3742 hdev->setup = btbcm_setup_apple; 3743 hdev->set_diag = btusb_bcm_set_diag; 3744 3745 /* Broadcom LM_DIAG Interface numbers are hardcoded */ 3746 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2); 3747 } 3748 3749 /* Combined Intel Device setup to support multiple setup routine */ 3750 if (id->driver_info & BTUSB_INTEL_COMBINED) { 3751 err = btintel_configure_setup(hdev); 3752 if (err) 3753 goto out_free_dev; 3754 3755 /* Transport specific configuration */ 3756 hdev->send = btusb_send_frame_intel; 3757 hdev->cmd_timeout = btusb_intel_cmd_timeout; 3758 3759 if (id->driver_info & BTUSB_INTEL_NO_WBS_SUPPORT) 3760 btintel_set_flag(hdev, INTEL_ROM_LEGACY_NO_WBS_SUPPORT); 3761 3762 if (id->driver_info & BTUSB_INTEL_BROKEN_INITIAL_NCMD) 3763 btintel_set_flag(hdev, INTEL_BROKEN_INITIAL_NCMD); 3764 3765 if (id->driver_info & BTUSB_INTEL_BROKEN_SHUTDOWN_LED) 3766 btintel_set_flag(hdev, INTEL_BROKEN_SHUTDOWN_LED); 3767 } 3768 3769 if (id->driver_info & BTUSB_MARVELL) 3770 hdev->set_bdaddr = btusb_set_bdaddr_marvell; 3771 3772 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_MTK) && 3773 (id->driver_info & BTUSB_MEDIATEK)) { 3774 hdev->setup = btusb_mtk_setup; 3775 hdev->shutdown = btusb_mtk_shutdown; 3776 hdev->manufacturer = 70; 3777 hdev->cmd_timeout = btusb_mtk_cmd_timeout; 3778 hdev->set_bdaddr = btmtk_set_bdaddr; 3779 set_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks); 3780 data->recv_acl = btusb_recv_acl_mtk; 3781 } 3782 3783 if (id->driver_info & BTUSB_SWAVE) { 3784 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks); 3785 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks); 3786 } 3787 3788 if (id->driver_info & BTUSB_INTEL_BOOT) { 3789 hdev->manufacturer = 2; 3790 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks); 3791 } 3792 3793 if (id->driver_info & BTUSB_ATH3012) { 3794 data->setup_on_usb = btusb_setup_qca; 3795 hdev->set_bdaddr = btusb_set_bdaddr_ath3012; 3796 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); 3797 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks); 3798 } 3799 3800 if (id->driver_info & BTUSB_QCA_ROME) { 3801 data->setup_on_usb = btusb_setup_qca; 3802 hdev->set_bdaddr = btusb_set_bdaddr_ath3012; 3803 hdev->cmd_timeout = btusb_qca_cmd_timeout; 3804 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); 3805 btusb_check_needs_reset_resume(intf); 3806 } 3807 3808 if (id->driver_info & BTUSB_QCA_WCN6855) { 3809 data->setup_on_usb = btusb_setup_qca; 3810 hdev->shutdown = btusb_shutdown_qca; 3811 hdev->set_bdaddr = btusb_set_bdaddr_wcn6855; 3812 hdev->cmd_timeout = btusb_qca_cmd_timeout; 3813 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); 3814 hci_set_msft_opcode(hdev, 0xFD70); 3815 } 3816 3817 if (id->driver_info & BTUSB_AMP) { 3818 /* AMP controllers do not support SCO packets */ 3819 data->isoc = NULL; 3820 } else { 3821 /* Interface orders are hardcoded in the specification */ 3822 data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1); 3823 data->isoc_ifnum = ifnum_base + 1; 3824 } 3825 3826 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_RTL) && 3827 (id->driver_info & BTUSB_REALTEK)) { 3828 hdev->setup = btrtl_setup_realtek; 3829 hdev->shutdown = btrtl_shutdown_realtek; 3830 hdev->cmd_timeout = btusb_rtl_cmd_timeout; 3831 3832 /* Realtek devices need to set remote wakeup on auto-suspend */ 3833 set_bit(BTUSB_WAKEUP_AUTOSUSPEND, &data->flags); 3834 set_bit(BTUSB_USE_ALT3_FOR_WBS, &data->flags); 3835 } 3836 3837 if (!reset) 3838 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); 3839 3840 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) { 3841 if (!disable_scofix) 3842 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks); 3843 } 3844 3845 if (id->driver_info & BTUSB_BROKEN_ISOC) 3846 data->isoc = NULL; 3847 3848 if (id->driver_info & BTUSB_WIDEBAND_SPEECH) 3849 set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED, &hdev->quirks); 3850 3851 if (id->driver_info & BTUSB_VALID_LE_STATES) 3852 set_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks); 3853 3854 if (id->driver_info & BTUSB_DIGIANSWER) { 3855 data->cmdreq_type = USB_TYPE_VENDOR; 3856 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); 3857 } 3858 3859 if (id->driver_info & BTUSB_CSR) { 3860 struct usb_device *udev = data->udev; 3861 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice); 3862 3863 /* Old firmware would otherwise execute USB reset */ 3864 if (bcdDevice < 0x117) 3865 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); 3866 3867 /* This must be set first in case we disable it for fakes */ 3868 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); 3869 3870 /* Fake CSR devices with broken commands */ 3871 if (le16_to_cpu(udev->descriptor.idVendor) == 0x0a12 && 3872 le16_to_cpu(udev->descriptor.idProduct) == 0x0001) 3873 hdev->setup = btusb_setup_csr; 3874 } 3875 3876 if (id->driver_info & BTUSB_SNIFFER) { 3877 struct usb_device *udev = data->udev; 3878 3879 /* New sniffer firmware has crippled HCI interface */ 3880 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997) 3881 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks); 3882 } 3883 3884 if (id->driver_info & BTUSB_INTEL_BOOT) { 3885 /* A bug in the bootloader causes that interrupt interface is 3886 * only enabled after receiving SetInterface(0, AltSetting=0). 3887 */ 3888 err = usb_set_interface(data->udev, 0, 0); 3889 if (err < 0) { 3890 BT_ERR("failed to set interface 0, alt 0 %d", err); 3891 goto out_free_dev; 3892 } 3893 } 3894 3895 if (data->isoc) { 3896 err = usb_driver_claim_interface(&btusb_driver, 3897 data->isoc, data); 3898 if (err < 0) 3899 goto out_free_dev; 3900 } 3901 3902 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) && data->diag) { 3903 if (!usb_driver_claim_interface(&btusb_driver, 3904 data->diag, data)) 3905 __set_diag_interface(hdev); 3906 else 3907 data->diag = NULL; 3908 } 3909 3910 if (enable_autosuspend) 3911 usb_enable_autosuspend(data->udev); 3912 3913 err = hci_register_dev(hdev); 3914 if (err < 0) 3915 goto out_free_dev; 3916 3917 usb_set_intfdata(intf, data); 3918 3919 debugfs_create_file("force_poll_sync", 0644, hdev->debugfs, data, 3920 &force_poll_sync_fops); 3921 3922 return 0; 3923 3924 out_free_dev: 3925 if (data->reset_gpio) 3926 gpiod_put(data->reset_gpio); 3927 hci_free_dev(hdev); 3928 return err; 3929 } 3930 3931 static void btusb_disconnect(struct usb_interface *intf) 3932 { 3933 struct btusb_data *data = usb_get_intfdata(intf); 3934 struct hci_dev *hdev; 3935 3936 BT_DBG("intf %p", intf); 3937 3938 if (!data) 3939 return; 3940 3941 hdev = data->hdev; 3942 usb_set_intfdata(data->intf, NULL); 3943 3944 if (data->isoc) 3945 usb_set_intfdata(data->isoc, NULL); 3946 3947 if (data->diag) 3948 usb_set_intfdata(data->diag, NULL); 3949 3950 hci_unregister_dev(hdev); 3951 3952 if (intf == data->intf) { 3953 if (data->isoc) 3954 usb_driver_release_interface(&btusb_driver, data->isoc); 3955 if (data->diag) 3956 usb_driver_release_interface(&btusb_driver, data->diag); 3957 } else if (intf == data->isoc) { 3958 if (data->diag) 3959 usb_driver_release_interface(&btusb_driver, data->diag); 3960 usb_driver_release_interface(&btusb_driver, data->intf); 3961 } else if (intf == data->diag) { 3962 usb_driver_release_interface(&btusb_driver, data->intf); 3963 if (data->isoc) 3964 usb_driver_release_interface(&btusb_driver, data->isoc); 3965 } 3966 3967 if (data->oob_wake_irq) 3968 device_init_wakeup(&data->udev->dev, false); 3969 3970 if (data->reset_gpio) 3971 gpiod_put(data->reset_gpio); 3972 3973 hci_free_dev(hdev); 3974 } 3975 3976 #ifdef CONFIG_PM 3977 static int btusb_suspend(struct usb_interface *intf, pm_message_t message) 3978 { 3979 struct btusb_data *data = usb_get_intfdata(intf); 3980 3981 BT_DBG("intf %p", intf); 3982 3983 if (data->suspend_count++) 3984 return 0; 3985 3986 spin_lock_irq(&data->txlock); 3987 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) { 3988 set_bit(BTUSB_SUSPENDING, &data->flags); 3989 spin_unlock_irq(&data->txlock); 3990 } else { 3991 spin_unlock_irq(&data->txlock); 3992 data->suspend_count--; 3993 return -EBUSY; 3994 } 3995 3996 cancel_work_sync(&data->work); 3997 3998 btusb_stop_traffic(data); 3999 usb_kill_anchored_urbs(&data->tx_anchor); 4000 4001 if (data->oob_wake_irq && device_may_wakeup(&data->udev->dev)) { 4002 set_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags); 4003 enable_irq_wake(data->oob_wake_irq); 4004 enable_irq(data->oob_wake_irq); 4005 } 4006 4007 /* For global suspend, Realtek devices lose the loaded fw 4008 * in them. But for autosuspend, firmware should remain. 4009 * Actually, it depends on whether the usb host sends 4010 * set feature (enable wakeup) or not. 4011 */ 4012 if (test_bit(BTUSB_WAKEUP_AUTOSUSPEND, &data->flags)) { 4013 if (PMSG_IS_AUTO(message) && 4014 device_can_wakeup(&data->udev->dev)) 4015 data->udev->do_remote_wakeup = 1; 4016 else if (!PMSG_IS_AUTO(message) && 4017 !device_may_wakeup(&data->udev->dev)) { 4018 data->udev->do_remote_wakeup = 0; 4019 data->udev->reset_resume = 1; 4020 } 4021 } 4022 4023 return 0; 4024 } 4025 4026 static void play_deferred(struct btusb_data *data) 4027 { 4028 struct urb *urb; 4029 int err; 4030 4031 while ((urb = usb_get_from_anchor(&data->deferred))) { 4032 usb_anchor_urb(urb, &data->tx_anchor); 4033 4034 err = usb_submit_urb(urb, GFP_ATOMIC); 4035 if (err < 0) { 4036 if (err != -EPERM && err != -ENODEV) 4037 BT_ERR("%s urb %p submission failed (%d)", 4038 data->hdev->name, urb, -err); 4039 kfree(urb->setup_packet); 4040 usb_unanchor_urb(urb); 4041 usb_free_urb(urb); 4042 break; 4043 } 4044 4045 data->tx_in_flight++; 4046 usb_free_urb(urb); 4047 } 4048 4049 /* Cleanup the rest deferred urbs. */ 4050 while ((urb = usb_get_from_anchor(&data->deferred))) { 4051 kfree(urb->setup_packet); 4052 usb_free_urb(urb); 4053 } 4054 } 4055 4056 static int btusb_resume(struct usb_interface *intf) 4057 { 4058 struct btusb_data *data = usb_get_intfdata(intf); 4059 struct hci_dev *hdev = data->hdev; 4060 int err = 0; 4061 4062 BT_DBG("intf %p", intf); 4063 4064 if (--data->suspend_count) 4065 return 0; 4066 4067 /* Disable only if not already disabled (keep it balanced) */ 4068 if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) { 4069 disable_irq(data->oob_wake_irq); 4070 disable_irq_wake(data->oob_wake_irq); 4071 } 4072 4073 if (!test_bit(HCI_RUNNING, &hdev->flags)) 4074 goto done; 4075 4076 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) { 4077 err = btusb_submit_intr_urb(hdev, GFP_NOIO); 4078 if (err < 0) { 4079 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 4080 goto failed; 4081 } 4082 } 4083 4084 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) { 4085 err = btusb_submit_bulk_urb(hdev, GFP_NOIO); 4086 if (err < 0) { 4087 clear_bit(BTUSB_BULK_RUNNING, &data->flags); 4088 goto failed; 4089 } 4090 4091 btusb_submit_bulk_urb(hdev, GFP_NOIO); 4092 } 4093 4094 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) { 4095 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0) 4096 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 4097 else 4098 btusb_submit_isoc_urb(hdev, GFP_NOIO); 4099 } 4100 4101 spin_lock_irq(&data->txlock); 4102 play_deferred(data); 4103 clear_bit(BTUSB_SUSPENDING, &data->flags); 4104 spin_unlock_irq(&data->txlock); 4105 schedule_work(&data->work); 4106 4107 return 0; 4108 4109 failed: 4110 usb_scuttle_anchored_urbs(&data->deferred); 4111 done: 4112 spin_lock_irq(&data->txlock); 4113 clear_bit(BTUSB_SUSPENDING, &data->flags); 4114 spin_unlock_irq(&data->txlock); 4115 4116 return err; 4117 } 4118 #endif 4119 4120 static struct usb_driver btusb_driver = { 4121 .name = "btusb", 4122 .probe = btusb_probe, 4123 .disconnect = btusb_disconnect, 4124 #ifdef CONFIG_PM 4125 .suspend = btusb_suspend, 4126 .resume = btusb_resume, 4127 #endif 4128 .id_table = btusb_table, 4129 .supports_autosuspend = 1, 4130 .disable_hub_initiated_lpm = 1, 4131 }; 4132 4133 module_usb_driver(btusb_driver); 4134 4135 module_param(disable_scofix, bool, 0644); 4136 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size"); 4137 4138 module_param(force_scofix, bool, 0644); 4139 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size"); 4140 4141 module_param(enable_autosuspend, bool, 0644); 4142 MODULE_PARM_DESC(enable_autosuspend, "Enable USB autosuspend by default"); 4143 4144 module_param(reset, bool, 0644); 4145 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization"); 4146 4147 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); 4148 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION); 4149 MODULE_VERSION(VERSION); 4150 MODULE_LICENSE("GPL"); 4151