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 enable_poll_sync = IS_ENABLED(CONFIG_BT_HCIBTUSB_POLL_SYNC); 36 static bool reset = true; 37 38 static struct usb_driver btusb_driver; 39 40 #define BTUSB_IGNORE BIT(0) 41 #define BTUSB_DIGIANSWER BIT(1) 42 #define BTUSB_CSR BIT(2) 43 #define BTUSB_SNIFFER BIT(3) 44 #define BTUSB_BCM92035 BIT(4) 45 #define BTUSB_BROKEN_ISOC BIT(5) 46 #define BTUSB_WRONG_SCO_MTU BIT(6) 47 #define BTUSB_ATH3012 BIT(7) 48 #define BTUSB_INTEL_COMBINED BIT(8) 49 #define BTUSB_INTEL_BOOT BIT(9) 50 #define BTUSB_BCM_PATCHRAM BIT(10) 51 #define BTUSB_MARVELL BIT(11) 52 #define BTUSB_SWAVE BIT(12) 53 #define BTUSB_AMP BIT(13) 54 #define BTUSB_QCA_ROME BIT(14) 55 #define BTUSB_BCM_APPLE BIT(15) 56 #define BTUSB_REALTEK BIT(16) 57 #define BTUSB_BCM2045 BIT(17) 58 #define BTUSB_IFNUM_2 BIT(18) 59 #define BTUSB_CW6622 BIT(19) 60 #define BTUSB_MEDIATEK BIT(20) 61 #define BTUSB_WIDEBAND_SPEECH BIT(21) 62 #define BTUSB_VALID_LE_STATES BIT(22) 63 #define BTUSB_QCA_WCN6855 BIT(23) 64 #define BTUSB_INTEL_BROKEN_SHUTDOWN_LED BIT(24) 65 #define BTUSB_INTEL_BROKEN_INITIAL_NCMD BIT(25) 66 #define BTUSB_INTEL_NO_WBS_SUPPORT BIT(26) 67 #define BTUSB_ACTIONS_SEMI BIT(27) 68 69 static const struct usb_device_id btusb_table[] = { 70 /* Generic Bluetooth USB device */ 71 { USB_DEVICE_INFO(0xe0, 0x01, 0x01) }, 72 73 /* Generic Bluetooth AMP device */ 74 { USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP }, 75 76 /* Generic Bluetooth USB interface */ 77 { USB_INTERFACE_INFO(0xe0, 0x01, 0x01) }, 78 79 /* Apple-specific (Broadcom) devices */ 80 { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01), 81 .driver_info = BTUSB_BCM_APPLE | BTUSB_IFNUM_2 }, 82 83 /* MediaTek MT76x0E */ 84 { USB_DEVICE(0x0e8d, 0x763f) }, 85 86 /* Broadcom SoftSailing reporting vendor specific */ 87 { USB_DEVICE(0x0a5c, 0x21e1) }, 88 89 /* Apple MacBookPro 7,1 */ 90 { USB_DEVICE(0x05ac, 0x8213) }, 91 92 /* Apple iMac11,1 */ 93 { USB_DEVICE(0x05ac, 0x8215) }, 94 95 /* Apple MacBookPro6,2 */ 96 { USB_DEVICE(0x05ac, 0x8218) }, 97 98 /* Apple MacBookAir3,1, MacBookAir3,2 */ 99 { USB_DEVICE(0x05ac, 0x821b) }, 100 101 /* Apple MacBookAir4,1 */ 102 { USB_DEVICE(0x05ac, 0x821f) }, 103 104 /* Apple MacBookPro8,2 */ 105 { USB_DEVICE(0x05ac, 0x821a) }, 106 107 /* Apple MacMini5,1 */ 108 { USB_DEVICE(0x05ac, 0x8281) }, 109 110 /* AVM BlueFRITZ! USB v2.0 */ 111 { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE }, 112 113 /* Bluetooth Ultraport Module from IBM */ 114 { USB_DEVICE(0x04bf, 0x030a) }, 115 116 /* ALPS Modules with non-standard id */ 117 { USB_DEVICE(0x044e, 0x3001) }, 118 { USB_DEVICE(0x044e, 0x3002) }, 119 120 /* Ericsson with non-standard id */ 121 { USB_DEVICE(0x0bdb, 0x1002) }, 122 123 /* Canyon CN-BTU1 with HID interfaces */ 124 { USB_DEVICE(0x0c10, 0x0000) }, 125 126 /* Broadcom BCM20702B0 (Dynex/Insignia) */ 127 { USB_DEVICE(0x19ff, 0x0239), .driver_info = BTUSB_BCM_PATCHRAM }, 128 129 /* Broadcom BCM43142A0 (Foxconn/Lenovo) */ 130 { USB_VENDOR_AND_INTERFACE_INFO(0x105b, 0xff, 0x01, 0x01), 131 .driver_info = BTUSB_BCM_PATCHRAM }, 132 133 /* Broadcom BCM920703 (HTC Vive) */ 134 { USB_VENDOR_AND_INTERFACE_INFO(0x0bb4, 0xff, 0x01, 0x01), 135 .driver_info = BTUSB_BCM_PATCHRAM }, 136 137 /* Foxconn - Hon Hai */ 138 { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01), 139 .driver_info = BTUSB_BCM_PATCHRAM }, 140 141 /* Lite-On Technology - Broadcom based */ 142 { USB_VENDOR_AND_INTERFACE_INFO(0x04ca, 0xff, 0x01, 0x01), 143 .driver_info = BTUSB_BCM_PATCHRAM }, 144 145 /* Broadcom devices with vendor specific id */ 146 { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01), 147 .driver_info = BTUSB_BCM_PATCHRAM }, 148 149 /* ASUSTek Computer - Broadcom based */ 150 { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01), 151 .driver_info = BTUSB_BCM_PATCHRAM }, 152 153 /* Belkin F8065bf - Broadcom based */ 154 { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01), 155 .driver_info = BTUSB_BCM_PATCHRAM }, 156 157 /* IMC Networks - Broadcom based */ 158 { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01), 159 .driver_info = BTUSB_BCM_PATCHRAM }, 160 161 /* Dell Computer - Broadcom based */ 162 { USB_VENDOR_AND_INTERFACE_INFO(0x413c, 0xff, 0x01, 0x01), 163 .driver_info = BTUSB_BCM_PATCHRAM }, 164 165 /* Toshiba Corp - Broadcom based */ 166 { USB_VENDOR_AND_INTERFACE_INFO(0x0930, 0xff, 0x01, 0x01), 167 .driver_info = BTUSB_BCM_PATCHRAM }, 168 169 /* Intel Bluetooth USB Bootloader (RAM module) */ 170 { USB_DEVICE(0x8087, 0x0a5a), 171 .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC }, 172 173 { } /* Terminating entry */ 174 }; 175 176 MODULE_DEVICE_TABLE(usb, btusb_table); 177 178 static const struct usb_device_id blacklist_table[] = { 179 /* CSR BlueCore devices */ 180 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR }, 181 182 /* Broadcom BCM2033 without firmware */ 183 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE }, 184 185 /* Broadcom BCM2045 devices */ 186 { USB_DEVICE(0x0a5c, 0x2045), .driver_info = BTUSB_BCM2045 }, 187 188 /* Atheros 3011 with sflash firmware */ 189 { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE }, 190 { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE }, 191 { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE }, 192 { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE }, 193 { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE }, 194 { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE }, 195 { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE }, 196 197 /* Atheros AR9285 Malbec with sflash firmware */ 198 { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE }, 199 200 /* Atheros 3012 with sflash firmware */ 201 { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 }, 202 { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 }, 203 { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 }, 204 { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 }, 205 { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 }, 206 { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 }, 207 { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 }, 208 { USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 }, 209 { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 }, 210 { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 }, 211 { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 }, 212 { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 }, 213 { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 }, 214 { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 }, 215 { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 }, 216 { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 }, 217 { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 }, 218 { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 }, 219 { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 }, 220 { USB_DEVICE(0x04ca, 0x3018), .driver_info = BTUSB_ATH3012 }, 221 { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 }, 222 { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 }, 223 { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 }, 224 { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 }, 225 { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 }, 226 { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 }, 227 { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 }, 228 { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 }, 229 { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 }, 230 { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 }, 231 { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 }, 232 { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 }, 233 { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 }, 234 { USB_DEVICE(0x0cf3, 0x817b), .driver_info = BTUSB_ATH3012 }, 235 { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 }, 236 { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 }, 237 { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 }, 238 { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 }, 239 { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 }, 240 { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 }, 241 { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 }, 242 { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 }, 243 { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 }, 244 { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 }, 245 { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 }, 246 { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 }, 247 { USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 }, 248 { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 }, 249 { USB_DEVICE(0x13d3, 0x3487), .driver_info = BTUSB_ATH3012 }, 250 { USB_DEVICE(0x13d3, 0x3490), .driver_info = BTUSB_ATH3012 }, 251 252 /* Atheros AR5BBU12 with sflash firmware */ 253 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE }, 254 255 /* Atheros AR5BBU12 with sflash firmware */ 256 { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 }, 257 { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 }, 258 259 /* QCA ROME chipset */ 260 { USB_DEVICE(0x0cf3, 0x535b), .driver_info = BTUSB_QCA_ROME | 261 BTUSB_WIDEBAND_SPEECH }, 262 { USB_DEVICE(0x0cf3, 0xe007), .driver_info = BTUSB_QCA_ROME | 263 BTUSB_WIDEBAND_SPEECH }, 264 { USB_DEVICE(0x0cf3, 0xe009), .driver_info = BTUSB_QCA_ROME | 265 BTUSB_WIDEBAND_SPEECH }, 266 { USB_DEVICE(0x0cf3, 0xe010), .driver_info = BTUSB_QCA_ROME | 267 BTUSB_WIDEBAND_SPEECH }, 268 { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME | 269 BTUSB_WIDEBAND_SPEECH }, 270 { USB_DEVICE(0x0cf3, 0xe301), .driver_info = BTUSB_QCA_ROME | 271 BTUSB_WIDEBAND_SPEECH }, 272 { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME | 273 BTUSB_WIDEBAND_SPEECH }, 274 { USB_DEVICE(0x0cf3, 0xe500), .driver_info = BTUSB_QCA_ROME | 275 BTUSB_WIDEBAND_SPEECH }, 276 { USB_DEVICE(0x0489, 0xe092), .driver_info = BTUSB_QCA_ROME | 277 BTUSB_WIDEBAND_SPEECH }, 278 { USB_DEVICE(0x0489, 0xe09f), .driver_info = BTUSB_QCA_ROME | 279 BTUSB_WIDEBAND_SPEECH }, 280 { USB_DEVICE(0x0489, 0xe0a2), .driver_info = BTUSB_QCA_ROME | 281 BTUSB_WIDEBAND_SPEECH }, 282 { USB_DEVICE(0x04ca, 0x3011), .driver_info = BTUSB_QCA_ROME | 283 BTUSB_WIDEBAND_SPEECH }, 284 { USB_DEVICE(0x04ca, 0x3015), .driver_info = BTUSB_QCA_ROME | 285 BTUSB_WIDEBAND_SPEECH }, 286 { USB_DEVICE(0x04ca, 0x3016), .driver_info = BTUSB_QCA_ROME | 287 BTUSB_WIDEBAND_SPEECH }, 288 { USB_DEVICE(0x04ca, 0x301a), .driver_info = BTUSB_QCA_ROME | 289 BTUSB_WIDEBAND_SPEECH }, 290 { USB_DEVICE(0x04ca, 0x3021), .driver_info = BTUSB_QCA_ROME | 291 BTUSB_WIDEBAND_SPEECH }, 292 { USB_DEVICE(0x13d3, 0x3491), .driver_info = BTUSB_QCA_ROME | 293 BTUSB_WIDEBAND_SPEECH }, 294 { USB_DEVICE(0x13d3, 0x3496), .driver_info = BTUSB_QCA_ROME | 295 BTUSB_WIDEBAND_SPEECH }, 296 { USB_DEVICE(0x13d3, 0x3501), .driver_info = BTUSB_QCA_ROME | 297 BTUSB_WIDEBAND_SPEECH }, 298 299 /* QCA WCN6855 chipset */ 300 { USB_DEVICE(0x0cf3, 0xe600), .driver_info = BTUSB_QCA_WCN6855 | 301 BTUSB_WIDEBAND_SPEECH | 302 BTUSB_VALID_LE_STATES }, 303 { USB_DEVICE(0x0489, 0xe0cc), .driver_info = BTUSB_QCA_WCN6855 | 304 BTUSB_WIDEBAND_SPEECH | 305 BTUSB_VALID_LE_STATES }, 306 { USB_DEVICE(0x0489, 0xe0d6), .driver_info = BTUSB_QCA_WCN6855 | 307 BTUSB_WIDEBAND_SPEECH | 308 BTUSB_VALID_LE_STATES }, 309 { USB_DEVICE(0x0489, 0xe0e3), .driver_info = BTUSB_QCA_WCN6855 | 310 BTUSB_WIDEBAND_SPEECH | 311 BTUSB_VALID_LE_STATES }, 312 { USB_DEVICE(0x10ab, 0x9309), .driver_info = BTUSB_QCA_WCN6855 | 313 BTUSB_WIDEBAND_SPEECH | 314 BTUSB_VALID_LE_STATES }, 315 { USB_DEVICE(0x10ab, 0x9409), .driver_info = BTUSB_QCA_WCN6855 | 316 BTUSB_WIDEBAND_SPEECH | 317 BTUSB_VALID_LE_STATES }, 318 { USB_DEVICE(0x0489, 0xe0d0), .driver_info = BTUSB_QCA_WCN6855 | 319 BTUSB_WIDEBAND_SPEECH | 320 BTUSB_VALID_LE_STATES }, 321 { USB_DEVICE(0x10ab, 0x9108), .driver_info = BTUSB_QCA_WCN6855 | 322 BTUSB_WIDEBAND_SPEECH | 323 BTUSB_VALID_LE_STATES }, 324 { USB_DEVICE(0x10ab, 0x9109), .driver_info = BTUSB_QCA_WCN6855 | 325 BTUSB_WIDEBAND_SPEECH | 326 BTUSB_VALID_LE_STATES }, 327 { USB_DEVICE(0x10ab, 0x9208), .driver_info = BTUSB_QCA_WCN6855 | 328 BTUSB_WIDEBAND_SPEECH | 329 BTUSB_VALID_LE_STATES }, 330 { USB_DEVICE(0x10ab, 0x9209), .driver_info = BTUSB_QCA_WCN6855 | 331 BTUSB_WIDEBAND_SPEECH | 332 BTUSB_VALID_LE_STATES }, 333 { USB_DEVICE(0x10ab, 0x9308), .driver_info = BTUSB_QCA_WCN6855 | 334 BTUSB_WIDEBAND_SPEECH | 335 BTUSB_VALID_LE_STATES }, 336 { USB_DEVICE(0x10ab, 0x9408), .driver_info = BTUSB_QCA_WCN6855 | 337 BTUSB_WIDEBAND_SPEECH | 338 BTUSB_VALID_LE_STATES }, 339 { USB_DEVICE(0x10ab, 0x9508), .driver_info = BTUSB_QCA_WCN6855 | 340 BTUSB_WIDEBAND_SPEECH | 341 BTUSB_VALID_LE_STATES }, 342 { USB_DEVICE(0x10ab, 0x9509), .driver_info = BTUSB_QCA_WCN6855 | 343 BTUSB_WIDEBAND_SPEECH | 344 BTUSB_VALID_LE_STATES }, 345 { USB_DEVICE(0x10ab, 0x9608), .driver_info = BTUSB_QCA_WCN6855 | 346 BTUSB_WIDEBAND_SPEECH | 347 BTUSB_VALID_LE_STATES }, 348 { USB_DEVICE(0x10ab, 0x9609), .driver_info = BTUSB_QCA_WCN6855 | 349 BTUSB_WIDEBAND_SPEECH | 350 BTUSB_VALID_LE_STATES }, 351 { USB_DEVICE(0x10ab, 0x9f09), .driver_info = BTUSB_QCA_WCN6855 | 352 BTUSB_WIDEBAND_SPEECH | 353 BTUSB_VALID_LE_STATES }, 354 { USB_DEVICE(0x04ca, 0x3022), .driver_info = BTUSB_QCA_WCN6855 | 355 BTUSB_WIDEBAND_SPEECH | 356 BTUSB_VALID_LE_STATES }, 357 { USB_DEVICE(0x0489, 0xe0c7), .driver_info = BTUSB_QCA_WCN6855 | 358 BTUSB_WIDEBAND_SPEECH | 359 BTUSB_VALID_LE_STATES }, 360 { USB_DEVICE(0x0489, 0xe0c9), .driver_info = BTUSB_QCA_WCN6855 | 361 BTUSB_WIDEBAND_SPEECH | 362 BTUSB_VALID_LE_STATES }, 363 { USB_DEVICE(0x0489, 0xe0ca), .driver_info = BTUSB_QCA_WCN6855 | 364 BTUSB_WIDEBAND_SPEECH | 365 BTUSB_VALID_LE_STATES }, 366 { USB_DEVICE(0x0489, 0xe0cb), .driver_info = BTUSB_QCA_WCN6855 | 367 BTUSB_WIDEBAND_SPEECH | 368 BTUSB_VALID_LE_STATES }, 369 { USB_DEVICE(0x0489, 0xe0ce), .driver_info = BTUSB_QCA_WCN6855 | 370 BTUSB_WIDEBAND_SPEECH | 371 BTUSB_VALID_LE_STATES }, 372 { USB_DEVICE(0x0489, 0xe0de), .driver_info = BTUSB_QCA_WCN6855 | 373 BTUSB_WIDEBAND_SPEECH | 374 BTUSB_VALID_LE_STATES }, 375 { USB_DEVICE(0x0489, 0xe0df), .driver_info = BTUSB_QCA_WCN6855 | 376 BTUSB_WIDEBAND_SPEECH | 377 BTUSB_VALID_LE_STATES }, 378 { USB_DEVICE(0x0489, 0xe0e1), .driver_info = BTUSB_QCA_WCN6855 | 379 BTUSB_WIDEBAND_SPEECH | 380 BTUSB_VALID_LE_STATES }, 381 { USB_DEVICE(0x0489, 0xe0ea), .driver_info = BTUSB_QCA_WCN6855 | 382 BTUSB_WIDEBAND_SPEECH | 383 BTUSB_VALID_LE_STATES }, 384 { USB_DEVICE(0x0489, 0xe0ec), .driver_info = BTUSB_QCA_WCN6855 | 385 BTUSB_WIDEBAND_SPEECH | 386 BTUSB_VALID_LE_STATES }, 387 { USB_DEVICE(0x04ca, 0x3023), .driver_info = BTUSB_QCA_WCN6855 | 388 BTUSB_WIDEBAND_SPEECH | 389 BTUSB_VALID_LE_STATES }, 390 { USB_DEVICE(0x04ca, 0x3024), .driver_info = BTUSB_QCA_WCN6855 | 391 BTUSB_WIDEBAND_SPEECH | 392 BTUSB_VALID_LE_STATES }, 393 { USB_DEVICE(0x04ca, 0x3a22), .driver_info = BTUSB_QCA_WCN6855 | 394 BTUSB_WIDEBAND_SPEECH | 395 BTUSB_VALID_LE_STATES }, 396 { USB_DEVICE(0x04ca, 0x3a24), .driver_info = BTUSB_QCA_WCN6855 | 397 BTUSB_WIDEBAND_SPEECH | 398 BTUSB_VALID_LE_STATES }, 399 { USB_DEVICE(0x04ca, 0x3a26), .driver_info = BTUSB_QCA_WCN6855 | 400 BTUSB_WIDEBAND_SPEECH | 401 BTUSB_VALID_LE_STATES }, 402 { USB_DEVICE(0x04ca, 0x3a27), .driver_info = BTUSB_QCA_WCN6855 | 403 BTUSB_WIDEBAND_SPEECH | 404 BTUSB_VALID_LE_STATES }, 405 406 /* QCA WCN785x chipset */ 407 { USB_DEVICE(0x0cf3, 0xe700), .driver_info = BTUSB_QCA_WCN6855 | 408 BTUSB_WIDEBAND_SPEECH | 409 BTUSB_VALID_LE_STATES }, 410 411 /* Broadcom BCM2035 */ 412 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 }, 413 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU }, 414 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU }, 415 416 /* Broadcom BCM2045 */ 417 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU }, 418 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU }, 419 420 /* IBM/Lenovo ThinkPad with Broadcom chip */ 421 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU }, 422 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU }, 423 424 /* HP laptop with Broadcom chip */ 425 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU }, 426 427 /* Dell laptop with Broadcom chip */ 428 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU }, 429 430 /* Dell Wireless 370 and 410 devices */ 431 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU }, 432 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU }, 433 434 /* Belkin F8T012 and F8T013 devices */ 435 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU }, 436 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU }, 437 438 /* Asus WL-BTD202 device */ 439 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU }, 440 441 /* Kensington Bluetooth USB adapter */ 442 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU }, 443 444 /* RTX Telecom based adapters with buggy SCO support */ 445 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC }, 446 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC }, 447 448 /* CONWISE Technology based adapters with buggy SCO support */ 449 { USB_DEVICE(0x0e5e, 0x6622), 450 .driver_info = BTUSB_BROKEN_ISOC | BTUSB_CW6622}, 451 452 /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */ 453 { USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE }, 454 455 /* Digianswer devices */ 456 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER }, 457 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE }, 458 459 /* CSR BlueCore Bluetooth Sniffer */ 460 { USB_DEVICE(0x0a12, 0x0002), 461 .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC }, 462 463 /* Frontline ComProbe Bluetooth Sniffer */ 464 { USB_DEVICE(0x16d3, 0x0002), 465 .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC }, 466 467 /* Marvell Bluetooth devices */ 468 { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL }, 469 { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL }, 470 { USB_DEVICE(0x1286, 0x204e), .driver_info = BTUSB_MARVELL }, 471 472 /* Intel Bluetooth devices */ 473 { USB_DEVICE(0x8087, 0x0025), .driver_info = BTUSB_INTEL_COMBINED }, 474 { USB_DEVICE(0x8087, 0x0026), .driver_info = BTUSB_INTEL_COMBINED }, 475 { USB_DEVICE(0x8087, 0x0029), .driver_info = BTUSB_INTEL_COMBINED }, 476 { USB_DEVICE(0x8087, 0x0032), .driver_info = BTUSB_INTEL_COMBINED }, 477 { USB_DEVICE(0x8087, 0x0033), .driver_info = BTUSB_INTEL_COMBINED }, 478 { USB_DEVICE(0x8087, 0x0035), .driver_info = BTUSB_INTEL_COMBINED }, 479 { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR }, 480 { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL_COMBINED | 481 BTUSB_INTEL_NO_WBS_SUPPORT | 482 BTUSB_INTEL_BROKEN_INITIAL_NCMD | 483 BTUSB_INTEL_BROKEN_SHUTDOWN_LED }, 484 { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL_COMBINED | 485 BTUSB_INTEL_NO_WBS_SUPPORT | 486 BTUSB_INTEL_BROKEN_SHUTDOWN_LED }, 487 { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_COMBINED }, 488 { USB_DEVICE(0x8087, 0x0aa7), .driver_info = BTUSB_INTEL_COMBINED | 489 BTUSB_INTEL_BROKEN_SHUTDOWN_LED }, 490 { USB_DEVICE(0x8087, 0x0aaa), .driver_info = BTUSB_INTEL_COMBINED }, 491 492 /* Other Intel Bluetooth devices */ 493 { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01), 494 .driver_info = BTUSB_IGNORE }, 495 496 /* Realtek 8821CE Bluetooth devices */ 497 { USB_DEVICE(0x13d3, 0x3529), .driver_info = BTUSB_REALTEK | 498 BTUSB_WIDEBAND_SPEECH }, 499 500 /* Realtek 8822CE Bluetooth devices */ 501 { USB_DEVICE(0x0bda, 0xb00c), .driver_info = BTUSB_REALTEK | 502 BTUSB_WIDEBAND_SPEECH }, 503 { USB_DEVICE(0x0bda, 0xc822), .driver_info = BTUSB_REALTEK | 504 BTUSB_WIDEBAND_SPEECH }, 505 506 /* Realtek 8822CU Bluetooth devices */ 507 { USB_DEVICE(0x13d3, 0x3549), .driver_info = BTUSB_REALTEK | 508 BTUSB_WIDEBAND_SPEECH }, 509 510 /* Realtek 8852AE Bluetooth devices */ 511 { USB_DEVICE(0x0bda, 0x2852), .driver_info = BTUSB_REALTEK | 512 BTUSB_WIDEBAND_SPEECH }, 513 { USB_DEVICE(0x0bda, 0xc852), .driver_info = BTUSB_REALTEK | 514 BTUSB_WIDEBAND_SPEECH }, 515 { USB_DEVICE(0x0bda, 0x385a), .driver_info = BTUSB_REALTEK | 516 BTUSB_WIDEBAND_SPEECH }, 517 { USB_DEVICE(0x0bda, 0x4852), .driver_info = BTUSB_REALTEK | 518 BTUSB_WIDEBAND_SPEECH }, 519 { USB_DEVICE(0x04c5, 0x165c), .driver_info = BTUSB_REALTEK | 520 BTUSB_WIDEBAND_SPEECH }, 521 { USB_DEVICE(0x04ca, 0x4006), .driver_info = BTUSB_REALTEK | 522 BTUSB_WIDEBAND_SPEECH }, 523 { USB_DEVICE(0x0cb8, 0xc549), .driver_info = BTUSB_REALTEK | 524 BTUSB_WIDEBAND_SPEECH }, 525 526 /* Realtek 8852CE Bluetooth devices */ 527 { USB_DEVICE(0x04ca, 0x4007), .driver_info = BTUSB_REALTEK | 528 BTUSB_WIDEBAND_SPEECH }, 529 { USB_DEVICE(0x04c5, 0x1675), .driver_info = BTUSB_REALTEK | 530 BTUSB_WIDEBAND_SPEECH }, 531 { USB_DEVICE(0x0cb8, 0xc558), .driver_info = BTUSB_REALTEK | 532 BTUSB_WIDEBAND_SPEECH }, 533 { USB_DEVICE(0x13d3, 0x3587), .driver_info = BTUSB_REALTEK | 534 BTUSB_WIDEBAND_SPEECH }, 535 { USB_DEVICE(0x13d3, 0x3586), .driver_info = BTUSB_REALTEK | 536 BTUSB_WIDEBAND_SPEECH }, 537 { USB_DEVICE(0x13d3, 0x3592), .driver_info = BTUSB_REALTEK | 538 BTUSB_WIDEBAND_SPEECH }, 539 540 /* Realtek 8852BE Bluetooth devices */ 541 { USB_DEVICE(0x0cb8, 0xc559), .driver_info = BTUSB_REALTEK | 542 BTUSB_WIDEBAND_SPEECH }, 543 { USB_DEVICE(0x0bda, 0x887b), .driver_info = BTUSB_REALTEK | 544 BTUSB_WIDEBAND_SPEECH }, 545 { USB_DEVICE(0x13d3, 0x3571), .driver_info = BTUSB_REALTEK | 546 BTUSB_WIDEBAND_SPEECH }, 547 548 /* Realtek Bluetooth devices */ 549 { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01), 550 .driver_info = BTUSB_REALTEK }, 551 552 /* MediaTek Bluetooth devices */ 553 { USB_VENDOR_AND_INTERFACE_INFO(0x0e8d, 0xe0, 0x01, 0x01), 554 .driver_info = BTUSB_MEDIATEK | 555 BTUSB_WIDEBAND_SPEECH | 556 BTUSB_VALID_LE_STATES }, 557 558 /* Additional MediaTek MT7615E Bluetooth devices */ 559 { USB_DEVICE(0x13d3, 0x3560), .driver_info = BTUSB_MEDIATEK}, 560 561 /* Additional MediaTek MT7663 Bluetooth devices */ 562 { USB_DEVICE(0x043e, 0x310c), .driver_info = BTUSB_MEDIATEK | 563 BTUSB_WIDEBAND_SPEECH | 564 BTUSB_VALID_LE_STATES }, 565 { USB_DEVICE(0x04ca, 0x3801), .driver_info = BTUSB_MEDIATEK | 566 BTUSB_WIDEBAND_SPEECH | 567 BTUSB_VALID_LE_STATES }, 568 569 /* Additional MediaTek MT7668 Bluetooth devices */ 570 { USB_DEVICE(0x043e, 0x3109), .driver_info = BTUSB_MEDIATEK | 571 BTUSB_WIDEBAND_SPEECH | 572 BTUSB_VALID_LE_STATES }, 573 574 /* Additional MediaTek MT7921 Bluetooth devices */ 575 { USB_DEVICE(0x0489, 0xe0c8), .driver_info = BTUSB_MEDIATEK | 576 BTUSB_WIDEBAND_SPEECH | 577 BTUSB_VALID_LE_STATES }, 578 { USB_DEVICE(0x0489, 0xe0e0), .driver_info = BTUSB_MEDIATEK | 579 BTUSB_WIDEBAND_SPEECH | 580 BTUSB_VALID_LE_STATES }, 581 { USB_DEVICE(0x0489, 0xe0f2), .driver_info = BTUSB_MEDIATEK | 582 BTUSB_WIDEBAND_SPEECH | 583 BTUSB_VALID_LE_STATES }, 584 { USB_DEVICE(0x04ca, 0x3802), .driver_info = BTUSB_MEDIATEK | 585 BTUSB_WIDEBAND_SPEECH | 586 BTUSB_VALID_LE_STATES }, 587 { USB_DEVICE(0x13d3, 0x3563), .driver_info = BTUSB_MEDIATEK | 588 BTUSB_WIDEBAND_SPEECH | 589 BTUSB_VALID_LE_STATES }, 590 { USB_DEVICE(0x13d3, 0x3564), .driver_info = BTUSB_MEDIATEK | 591 BTUSB_WIDEBAND_SPEECH | 592 BTUSB_VALID_LE_STATES }, 593 { USB_DEVICE(0x13d3, 0x3567), .driver_info = BTUSB_MEDIATEK | 594 BTUSB_WIDEBAND_SPEECH | 595 BTUSB_VALID_LE_STATES }, 596 { USB_DEVICE(0x13d3, 0x3578), .driver_info = BTUSB_MEDIATEK | 597 BTUSB_WIDEBAND_SPEECH | 598 BTUSB_VALID_LE_STATES }, 599 { USB_DEVICE(0x13d3, 0x3583), .driver_info = BTUSB_MEDIATEK | 600 BTUSB_WIDEBAND_SPEECH | 601 BTUSB_VALID_LE_STATES }, 602 { USB_DEVICE(0x0489, 0xe0cd), .driver_info = BTUSB_MEDIATEK | 603 BTUSB_WIDEBAND_SPEECH | 604 BTUSB_VALID_LE_STATES }, 605 { USB_DEVICE(0x0e8d, 0x0608), .driver_info = BTUSB_MEDIATEK | 606 BTUSB_WIDEBAND_SPEECH | 607 BTUSB_VALID_LE_STATES }, 608 609 /* MediaTek MT7922A Bluetooth devices */ 610 { USB_DEVICE(0x0489, 0xe0d8), .driver_info = BTUSB_MEDIATEK | 611 BTUSB_WIDEBAND_SPEECH | 612 BTUSB_VALID_LE_STATES }, 613 { USB_DEVICE(0x0489, 0xe0d9), .driver_info = BTUSB_MEDIATEK | 614 BTUSB_WIDEBAND_SPEECH | 615 BTUSB_VALID_LE_STATES }, 616 { USB_DEVICE(0x0489, 0xe0f5), .driver_info = BTUSB_MEDIATEK | 617 BTUSB_WIDEBAND_SPEECH | 618 BTUSB_VALID_LE_STATES }, 619 { USB_DEVICE(0x13d3, 0x3568), .driver_info = BTUSB_MEDIATEK | 620 BTUSB_WIDEBAND_SPEECH | 621 BTUSB_VALID_LE_STATES }, 622 { USB_DEVICE(0x0489, 0xe0e2), .driver_info = BTUSB_MEDIATEK | 623 BTUSB_WIDEBAND_SPEECH | 624 BTUSB_VALID_LE_STATES }, 625 { USB_DEVICE(0x0489, 0xe0e4), .driver_info = BTUSB_MEDIATEK | 626 BTUSB_WIDEBAND_SPEECH | 627 BTUSB_VALID_LE_STATES }, 628 { USB_DEVICE(0x0489, 0xe0f2), .driver_info = BTUSB_MEDIATEK | 629 BTUSB_WIDEBAND_SPEECH | 630 BTUSB_VALID_LE_STATES }, 631 632 /* Additional Realtek 8723AE Bluetooth devices */ 633 { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK }, 634 { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK }, 635 636 /* Additional Realtek 8723BE Bluetooth devices */ 637 { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK }, 638 { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK }, 639 { USB_DEVICE(0x04f2, 0xb49f), .driver_info = BTUSB_REALTEK }, 640 { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK }, 641 { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK }, 642 { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK }, 643 { USB_DEVICE(0x13d3, 0x3494), .driver_info = BTUSB_REALTEK }, 644 645 /* Additional Realtek 8723BU Bluetooth devices */ 646 { USB_DEVICE(0x7392, 0xa611), .driver_info = BTUSB_REALTEK }, 647 648 /* Additional Realtek 8723DE Bluetooth devices */ 649 { USB_DEVICE(0x0bda, 0xb009), .driver_info = BTUSB_REALTEK }, 650 { USB_DEVICE(0x2ff8, 0xb011), .driver_info = BTUSB_REALTEK }, 651 652 /* Additional Realtek 8761BUV Bluetooth devices */ 653 { USB_DEVICE(0x2357, 0x0604), .driver_info = BTUSB_REALTEK | 654 BTUSB_WIDEBAND_SPEECH }, 655 { USB_DEVICE(0x0b05, 0x190e), .driver_info = BTUSB_REALTEK | 656 BTUSB_WIDEBAND_SPEECH }, 657 { USB_DEVICE(0x2550, 0x8761), .driver_info = BTUSB_REALTEK | 658 BTUSB_WIDEBAND_SPEECH }, 659 { USB_DEVICE(0x0bda, 0x8771), .driver_info = BTUSB_REALTEK | 660 BTUSB_WIDEBAND_SPEECH }, 661 { USB_DEVICE(0x6655, 0x8771), .driver_info = BTUSB_REALTEK | 662 BTUSB_WIDEBAND_SPEECH }, 663 { USB_DEVICE(0x7392, 0xc611), .driver_info = BTUSB_REALTEK | 664 BTUSB_WIDEBAND_SPEECH }, 665 { USB_DEVICE(0x2b89, 0x8761), .driver_info = BTUSB_REALTEK | 666 BTUSB_WIDEBAND_SPEECH }, 667 668 /* Additional Realtek 8821AE Bluetooth devices */ 669 { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK }, 670 { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK }, 671 { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK }, 672 { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK }, 673 { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK }, 674 675 /* Additional Realtek 8822BE Bluetooth devices */ 676 { USB_DEVICE(0x13d3, 0x3526), .driver_info = BTUSB_REALTEK }, 677 { USB_DEVICE(0x0b05, 0x185c), .driver_info = BTUSB_REALTEK }, 678 679 /* Additional Realtek 8822CE Bluetooth devices */ 680 { USB_DEVICE(0x04ca, 0x4005), .driver_info = BTUSB_REALTEK | 681 BTUSB_WIDEBAND_SPEECH }, 682 { USB_DEVICE(0x04c5, 0x161f), .driver_info = BTUSB_REALTEK | 683 BTUSB_WIDEBAND_SPEECH }, 684 { USB_DEVICE(0x0b05, 0x18ef), .driver_info = BTUSB_REALTEK | 685 BTUSB_WIDEBAND_SPEECH }, 686 { USB_DEVICE(0x13d3, 0x3548), .driver_info = BTUSB_REALTEK | 687 BTUSB_WIDEBAND_SPEECH }, 688 { USB_DEVICE(0x13d3, 0x3549), .driver_info = BTUSB_REALTEK | 689 BTUSB_WIDEBAND_SPEECH }, 690 { USB_DEVICE(0x13d3, 0x3553), .driver_info = BTUSB_REALTEK | 691 BTUSB_WIDEBAND_SPEECH }, 692 { USB_DEVICE(0x13d3, 0x3555), .driver_info = BTUSB_REALTEK | 693 BTUSB_WIDEBAND_SPEECH }, 694 { USB_DEVICE(0x2ff8, 0x3051), .driver_info = BTUSB_REALTEK | 695 BTUSB_WIDEBAND_SPEECH }, 696 { USB_DEVICE(0x1358, 0xc123), .driver_info = BTUSB_REALTEK | 697 BTUSB_WIDEBAND_SPEECH }, 698 { USB_DEVICE(0x0bda, 0xc123), .driver_info = BTUSB_REALTEK | 699 BTUSB_WIDEBAND_SPEECH }, 700 { USB_DEVICE(0x0cb5, 0xc547), .driver_info = BTUSB_REALTEK | 701 BTUSB_WIDEBAND_SPEECH }, 702 703 /* Actions Semiconductor ATS2851 based devices */ 704 { USB_DEVICE(0x10d7, 0xb012), .driver_info = BTUSB_ACTIONS_SEMI }, 705 706 /* Silicon Wave based devices */ 707 { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE }, 708 709 { } /* Terminating entry */ 710 }; 711 712 /* The Bluetooth USB module build into some devices needs to be reset on resume, 713 * this is a problem with the platform (likely shutting off all power) not with 714 * the module itself. So we use a DMI list to match known broken platforms. 715 */ 716 static const struct dmi_system_id btusb_needs_reset_resume_table[] = { 717 { 718 /* Dell OptiPlex 3060 (QCA ROME device 0cf3:e007) */ 719 .matches = { 720 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 721 DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 3060"), 722 }, 723 }, 724 { 725 /* Dell XPS 9360 (QCA ROME device 0cf3:e300) */ 726 .matches = { 727 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 728 DMI_MATCH(DMI_PRODUCT_NAME, "XPS 13 9360"), 729 }, 730 }, 731 { 732 /* Dell Inspiron 5565 (QCA ROME device 0cf3:e009) */ 733 .matches = { 734 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 735 DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 5565"), 736 }, 737 }, 738 {} 739 }; 740 741 struct qca_dump_info { 742 /* fields for dump collection */ 743 u16 id_vendor; 744 u16 id_product; 745 u32 fw_version; 746 u32 controller_id; 747 u32 ram_dump_size; 748 u16 ram_dump_seqno; 749 }; 750 751 #define BTUSB_MAX_ISOC_FRAMES 10 752 753 #define BTUSB_INTR_RUNNING 0 754 #define BTUSB_BULK_RUNNING 1 755 #define BTUSB_ISOC_RUNNING 2 756 #define BTUSB_SUSPENDING 3 757 #define BTUSB_DID_ISO_RESUME 4 758 #define BTUSB_BOOTLOADER 5 759 #define BTUSB_DOWNLOADING 6 760 #define BTUSB_FIRMWARE_LOADED 7 761 #define BTUSB_FIRMWARE_FAILED 8 762 #define BTUSB_BOOTING 9 763 #define BTUSB_DIAG_RUNNING 10 764 #define BTUSB_OOB_WAKE_ENABLED 11 765 #define BTUSB_HW_RESET_ACTIVE 12 766 #define BTUSB_TX_WAIT_VND_EVT 13 767 #define BTUSB_WAKEUP_AUTOSUSPEND 14 768 #define BTUSB_USE_ALT3_FOR_WBS 15 769 #define BTUSB_ALT6_CONTINUOUS_TX 16 770 #define BTUSB_HW_SSR_ACTIVE 17 771 772 struct btusb_data { 773 struct hci_dev *hdev; 774 struct usb_device *udev; 775 struct usb_interface *intf; 776 struct usb_interface *isoc; 777 struct usb_interface *diag; 778 unsigned isoc_ifnum; 779 780 unsigned long flags; 781 782 bool poll_sync; 783 int intr_interval; 784 struct work_struct work; 785 struct work_struct waker; 786 struct delayed_work rx_work; 787 788 struct sk_buff_head acl_q; 789 790 struct usb_anchor deferred; 791 struct usb_anchor tx_anchor; 792 int tx_in_flight; 793 spinlock_t txlock; 794 795 struct usb_anchor intr_anchor; 796 struct usb_anchor bulk_anchor; 797 struct usb_anchor isoc_anchor; 798 struct usb_anchor diag_anchor; 799 struct usb_anchor ctrl_anchor; 800 spinlock_t rxlock; 801 802 struct sk_buff *evt_skb; 803 struct sk_buff *acl_skb; 804 struct sk_buff *sco_skb; 805 806 struct usb_endpoint_descriptor *intr_ep; 807 struct usb_endpoint_descriptor *bulk_tx_ep; 808 struct usb_endpoint_descriptor *bulk_rx_ep; 809 struct usb_endpoint_descriptor *isoc_tx_ep; 810 struct usb_endpoint_descriptor *isoc_rx_ep; 811 struct usb_endpoint_descriptor *diag_tx_ep; 812 struct usb_endpoint_descriptor *diag_rx_ep; 813 814 struct gpio_desc *reset_gpio; 815 816 __u8 cmdreq_type; 817 __u8 cmdreq; 818 819 unsigned int sco_num; 820 unsigned int air_mode; 821 bool usb_alt6_packet_flow; 822 int isoc_altsetting; 823 int suspend_count; 824 825 int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb); 826 int (*recv_acl)(struct hci_dev *hdev, struct sk_buff *skb); 827 int (*recv_bulk)(struct btusb_data *data, void *buffer, int count); 828 829 int (*setup_on_usb)(struct hci_dev *hdev); 830 831 int oob_wake_irq; /* irq for out-of-band wake-on-bt */ 832 unsigned cmd_timeout_cnt; 833 834 struct qca_dump_info qca_dump; 835 }; 836 837 static void btusb_reset(struct hci_dev *hdev) 838 { 839 struct btusb_data *data; 840 int err; 841 842 if (hdev->reset) { 843 hdev->reset(hdev); 844 return; 845 } 846 847 data = hci_get_drvdata(hdev); 848 /* This is not an unbalanced PM reference since the device will reset */ 849 err = usb_autopm_get_interface(data->intf); 850 if (err) { 851 bt_dev_err(hdev, "Failed usb_autopm_get_interface: %d", err); 852 return; 853 } 854 855 bt_dev_err(hdev, "Resetting usb device."); 856 usb_queue_reset_device(data->intf); 857 } 858 859 static void btusb_intel_cmd_timeout(struct hci_dev *hdev) 860 { 861 struct btusb_data *data = hci_get_drvdata(hdev); 862 struct gpio_desc *reset_gpio = data->reset_gpio; 863 864 if (++data->cmd_timeout_cnt < 5) 865 return; 866 867 if (!reset_gpio) { 868 btusb_reset(hdev); 869 return; 870 } 871 872 /* 873 * Toggle the hard reset line if the platform provides one. The reset 874 * is going to yank the device off the USB and then replug. So doing 875 * once is enough. The cleanup is handled correctly on the way out 876 * (standard USB disconnect), and the new device is detected cleanly 877 * and bound to the driver again like it should be. 878 */ 879 if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) { 880 bt_dev_err(hdev, "last reset failed? Not resetting again"); 881 return; 882 } 883 884 bt_dev_err(hdev, "Initiating HW reset via gpio"); 885 gpiod_set_value_cansleep(reset_gpio, 1); 886 msleep(100); 887 gpiod_set_value_cansleep(reset_gpio, 0); 888 } 889 890 static void btusb_rtl_cmd_timeout(struct hci_dev *hdev) 891 { 892 struct btusb_data *data = hci_get_drvdata(hdev); 893 struct gpio_desc *reset_gpio = data->reset_gpio; 894 895 if (++data->cmd_timeout_cnt < 5) 896 return; 897 898 if (!reset_gpio) { 899 btusb_reset(hdev); 900 return; 901 } 902 903 /* Toggle the hard reset line. The Realtek device is going to 904 * yank itself off the USB and then replug. The cleanup is handled 905 * correctly on the way out (standard USB disconnect), and the new 906 * device is detected cleanly and bound to the driver again like 907 * it should be. 908 */ 909 if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) { 910 bt_dev_err(hdev, "last reset failed? Not resetting again"); 911 return; 912 } 913 914 bt_dev_err(hdev, "Reset Realtek device via gpio"); 915 gpiod_set_value_cansleep(reset_gpio, 1); 916 msleep(200); 917 gpiod_set_value_cansleep(reset_gpio, 0); 918 } 919 920 static void btusb_qca_cmd_timeout(struct hci_dev *hdev) 921 { 922 struct btusb_data *data = hci_get_drvdata(hdev); 923 struct gpio_desc *reset_gpio = data->reset_gpio; 924 925 if (test_bit(BTUSB_HW_SSR_ACTIVE, &data->flags)) { 926 bt_dev_info(hdev, "Ramdump in progress, defer cmd_timeout"); 927 return; 928 } 929 930 if (++data->cmd_timeout_cnt < 5) 931 return; 932 933 if (reset_gpio) { 934 bt_dev_err(hdev, "Reset qca device via bt_en gpio"); 935 936 /* Toggle the hard reset line. The qca bt device is going to 937 * yank itself off the USB and then replug. The cleanup is handled 938 * correctly on the way out (standard USB disconnect), and the new 939 * device is detected cleanly and bound to the driver again like 940 * it should be. 941 */ 942 if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) { 943 bt_dev_err(hdev, "last reset failed? Not resetting again"); 944 return; 945 } 946 947 gpiod_set_value_cansleep(reset_gpio, 0); 948 msleep(200); 949 gpiod_set_value_cansleep(reset_gpio, 1); 950 951 return; 952 } 953 954 btusb_reset(hdev); 955 } 956 957 static inline void btusb_free_frags(struct btusb_data *data) 958 { 959 unsigned long flags; 960 961 spin_lock_irqsave(&data->rxlock, flags); 962 963 dev_kfree_skb_irq(data->evt_skb); 964 data->evt_skb = NULL; 965 966 dev_kfree_skb_irq(data->acl_skb); 967 data->acl_skb = NULL; 968 969 dev_kfree_skb_irq(data->sco_skb); 970 data->sco_skb = NULL; 971 972 spin_unlock_irqrestore(&data->rxlock, flags); 973 } 974 975 static int btusb_recv_event(struct btusb_data *data, struct sk_buff *skb) 976 { 977 if (data->intr_interval) { 978 /* Trigger dequeue immediatelly if an event is received */ 979 schedule_delayed_work(&data->rx_work, 0); 980 } 981 982 return data->recv_event(data->hdev, skb); 983 } 984 985 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count) 986 { 987 struct sk_buff *skb; 988 unsigned long flags; 989 int err = 0; 990 991 spin_lock_irqsave(&data->rxlock, flags); 992 skb = data->evt_skb; 993 994 while (count) { 995 int len; 996 997 if (!skb) { 998 skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC); 999 if (!skb) { 1000 err = -ENOMEM; 1001 break; 1002 } 1003 1004 hci_skb_pkt_type(skb) = HCI_EVENT_PKT; 1005 hci_skb_expect(skb) = HCI_EVENT_HDR_SIZE; 1006 } 1007 1008 len = min_t(uint, hci_skb_expect(skb), count); 1009 skb_put_data(skb, buffer, len); 1010 1011 count -= len; 1012 buffer += len; 1013 hci_skb_expect(skb) -= len; 1014 1015 if (skb->len == HCI_EVENT_HDR_SIZE) { 1016 /* Complete event header */ 1017 hci_skb_expect(skb) = hci_event_hdr(skb)->plen; 1018 1019 if (skb_tailroom(skb) < hci_skb_expect(skb)) { 1020 kfree_skb(skb); 1021 skb = NULL; 1022 1023 err = -EILSEQ; 1024 break; 1025 } 1026 } 1027 1028 if (!hci_skb_expect(skb)) { 1029 /* Complete frame */ 1030 btusb_recv_event(data, skb); 1031 skb = NULL; 1032 } 1033 } 1034 1035 data->evt_skb = skb; 1036 spin_unlock_irqrestore(&data->rxlock, flags); 1037 1038 return err; 1039 } 1040 1041 static int btusb_recv_acl(struct btusb_data *data, struct sk_buff *skb) 1042 { 1043 /* Only queue ACL packet if intr_interval is set as it means 1044 * force_poll_sync has been enabled. 1045 */ 1046 if (!data->intr_interval) 1047 return data->recv_acl(data->hdev, skb); 1048 1049 skb_queue_tail(&data->acl_q, skb); 1050 schedule_delayed_work(&data->rx_work, data->intr_interval); 1051 1052 return 0; 1053 } 1054 1055 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count) 1056 { 1057 struct sk_buff *skb; 1058 unsigned long flags; 1059 int err = 0; 1060 1061 spin_lock_irqsave(&data->rxlock, flags); 1062 skb = data->acl_skb; 1063 1064 while (count) { 1065 int len; 1066 1067 if (!skb) { 1068 skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC); 1069 if (!skb) { 1070 err = -ENOMEM; 1071 break; 1072 } 1073 1074 hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT; 1075 hci_skb_expect(skb) = HCI_ACL_HDR_SIZE; 1076 } 1077 1078 len = min_t(uint, hci_skb_expect(skb), count); 1079 skb_put_data(skb, buffer, len); 1080 1081 count -= len; 1082 buffer += len; 1083 hci_skb_expect(skb) -= len; 1084 1085 if (skb->len == HCI_ACL_HDR_SIZE) { 1086 __le16 dlen = hci_acl_hdr(skb)->dlen; 1087 1088 /* Complete ACL header */ 1089 hci_skb_expect(skb) = __le16_to_cpu(dlen); 1090 1091 if (skb_tailroom(skb) < hci_skb_expect(skb)) { 1092 kfree_skb(skb); 1093 skb = NULL; 1094 1095 err = -EILSEQ; 1096 break; 1097 } 1098 } 1099 1100 if (!hci_skb_expect(skb)) { 1101 /* Complete frame */ 1102 btusb_recv_acl(data, skb); 1103 skb = NULL; 1104 } 1105 } 1106 1107 data->acl_skb = skb; 1108 spin_unlock_irqrestore(&data->rxlock, flags); 1109 1110 return err; 1111 } 1112 1113 static bool btusb_validate_sco_handle(struct hci_dev *hdev, 1114 struct hci_sco_hdr *hdr) 1115 { 1116 __u16 handle; 1117 1118 if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) 1119 // Can't validate, userspace controls everything. 1120 return true; 1121 1122 /* 1123 * USB isochronous transfers are not designed to be reliable and may 1124 * lose fragments. When this happens, the next first fragment 1125 * encountered might actually be a continuation fragment. 1126 * Validate the handle to detect it and drop it, or else the upper 1127 * layer will get garbage for a while. 1128 */ 1129 1130 handle = hci_handle(__le16_to_cpu(hdr->handle)); 1131 1132 switch (hci_conn_lookup_type(hdev, handle)) { 1133 case SCO_LINK: 1134 case ESCO_LINK: 1135 return true; 1136 default: 1137 return false; 1138 } 1139 } 1140 1141 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count) 1142 { 1143 struct sk_buff *skb; 1144 unsigned long flags; 1145 int err = 0; 1146 1147 spin_lock_irqsave(&data->rxlock, flags); 1148 skb = data->sco_skb; 1149 1150 while (count) { 1151 int len; 1152 1153 if (!skb) { 1154 skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC); 1155 if (!skb) { 1156 err = -ENOMEM; 1157 break; 1158 } 1159 1160 hci_skb_pkt_type(skb) = HCI_SCODATA_PKT; 1161 hci_skb_expect(skb) = HCI_SCO_HDR_SIZE; 1162 } 1163 1164 len = min_t(uint, hci_skb_expect(skb), count); 1165 skb_put_data(skb, buffer, len); 1166 1167 count -= len; 1168 buffer += len; 1169 hci_skb_expect(skb) -= len; 1170 1171 if (skb->len == HCI_SCO_HDR_SIZE) { 1172 /* Complete SCO header */ 1173 struct hci_sco_hdr *hdr = hci_sco_hdr(skb); 1174 1175 hci_skb_expect(skb) = hdr->dlen; 1176 1177 if (skb_tailroom(skb) < hci_skb_expect(skb) || 1178 !btusb_validate_sco_handle(data->hdev, hdr)) { 1179 kfree_skb(skb); 1180 skb = NULL; 1181 1182 err = -EILSEQ; 1183 break; 1184 } 1185 } 1186 1187 if (!hci_skb_expect(skb)) { 1188 /* Complete frame */ 1189 hci_recv_frame(data->hdev, skb); 1190 skb = NULL; 1191 } 1192 } 1193 1194 data->sco_skb = skb; 1195 spin_unlock_irqrestore(&data->rxlock, flags); 1196 1197 return err; 1198 } 1199 1200 static void btusb_intr_complete(struct urb *urb) 1201 { 1202 struct hci_dev *hdev = urb->context; 1203 struct btusb_data *data = hci_get_drvdata(hdev); 1204 int err; 1205 1206 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, 1207 urb->actual_length); 1208 1209 if (!test_bit(HCI_RUNNING, &hdev->flags)) 1210 return; 1211 1212 if (urb->status == 0) { 1213 hdev->stat.byte_rx += urb->actual_length; 1214 1215 if (btusb_recv_intr(data, urb->transfer_buffer, 1216 urb->actual_length) < 0) { 1217 bt_dev_err(hdev, "corrupted event packet"); 1218 hdev->stat.err_rx++; 1219 } 1220 } else if (urb->status == -ENOENT) { 1221 /* Avoid suspend failed when usb_kill_urb */ 1222 return; 1223 } 1224 1225 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags)) 1226 return; 1227 1228 usb_mark_last_busy(data->udev); 1229 usb_anchor_urb(urb, &data->intr_anchor); 1230 1231 err = usb_submit_urb(urb, GFP_ATOMIC); 1232 if (err < 0) { 1233 /* -EPERM: urb is being killed; 1234 * -ENODEV: device got disconnected 1235 */ 1236 if (err != -EPERM && err != -ENODEV) 1237 bt_dev_err(hdev, "urb %p failed to resubmit (%d)", 1238 urb, -err); 1239 if (err != -EPERM) 1240 hci_cmd_sync_cancel(hdev, -err); 1241 usb_unanchor_urb(urb); 1242 } 1243 } 1244 1245 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags) 1246 { 1247 struct btusb_data *data = hci_get_drvdata(hdev); 1248 struct urb *urb; 1249 unsigned char *buf; 1250 unsigned int pipe; 1251 int err, size; 1252 1253 BT_DBG("%s", hdev->name); 1254 1255 if (!data->intr_ep) 1256 return -ENODEV; 1257 1258 urb = usb_alloc_urb(0, mem_flags); 1259 if (!urb) 1260 return -ENOMEM; 1261 1262 size = le16_to_cpu(data->intr_ep->wMaxPacketSize); 1263 1264 buf = kmalloc(size, mem_flags); 1265 if (!buf) { 1266 usb_free_urb(urb); 1267 return -ENOMEM; 1268 } 1269 1270 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress); 1271 1272 usb_fill_int_urb(urb, data->udev, pipe, buf, size, 1273 btusb_intr_complete, hdev, data->intr_ep->bInterval); 1274 1275 urb->transfer_flags |= URB_FREE_BUFFER; 1276 1277 usb_anchor_urb(urb, &data->intr_anchor); 1278 1279 err = usb_submit_urb(urb, mem_flags); 1280 if (err < 0) { 1281 if (err != -EPERM && err != -ENODEV) 1282 bt_dev_err(hdev, "urb %p submission failed (%d)", 1283 urb, -err); 1284 if (err != -EPERM) 1285 hci_cmd_sync_cancel(hdev, -err); 1286 usb_unanchor_urb(urb); 1287 } 1288 1289 /* Only initialize intr_interval if URB poll sync is enabled */ 1290 if (!data->poll_sync) 1291 goto done; 1292 1293 /* The units are frames (milliseconds) for full and low speed devices, 1294 * and microframes (1/8 millisecond) for highspeed and SuperSpeed 1295 * devices. 1296 * 1297 * This is done once on open/resume so it shouldn't change even if 1298 * force_poll_sync changes. 1299 */ 1300 switch (urb->dev->speed) { 1301 case USB_SPEED_SUPER_PLUS: 1302 case USB_SPEED_SUPER: /* units are 125us */ 1303 data->intr_interval = usecs_to_jiffies(urb->interval * 125); 1304 break; 1305 default: 1306 data->intr_interval = msecs_to_jiffies(urb->interval); 1307 break; 1308 } 1309 1310 done: 1311 usb_free_urb(urb); 1312 1313 return err; 1314 } 1315 1316 static void btusb_bulk_complete(struct urb *urb) 1317 { 1318 struct hci_dev *hdev = urb->context; 1319 struct btusb_data *data = hci_get_drvdata(hdev); 1320 int err; 1321 1322 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, 1323 urb->actual_length); 1324 1325 if (!test_bit(HCI_RUNNING, &hdev->flags)) 1326 return; 1327 1328 if (urb->status == 0) { 1329 hdev->stat.byte_rx += urb->actual_length; 1330 1331 if (data->recv_bulk(data, urb->transfer_buffer, 1332 urb->actual_length) < 0) { 1333 bt_dev_err(hdev, "corrupted ACL packet"); 1334 hdev->stat.err_rx++; 1335 } 1336 } else if (urb->status == -ENOENT) { 1337 /* Avoid suspend failed when usb_kill_urb */ 1338 return; 1339 } 1340 1341 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags)) 1342 return; 1343 1344 usb_anchor_urb(urb, &data->bulk_anchor); 1345 usb_mark_last_busy(data->udev); 1346 1347 err = usb_submit_urb(urb, GFP_ATOMIC); 1348 if (err < 0) { 1349 /* -EPERM: urb is being killed; 1350 * -ENODEV: device got disconnected 1351 */ 1352 if (err != -EPERM && err != -ENODEV) 1353 bt_dev_err(hdev, "urb %p failed to resubmit (%d)", 1354 urb, -err); 1355 usb_unanchor_urb(urb); 1356 } 1357 } 1358 1359 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags) 1360 { 1361 struct btusb_data *data = hci_get_drvdata(hdev); 1362 struct urb *urb; 1363 unsigned char *buf; 1364 unsigned int pipe; 1365 int err, size = HCI_MAX_FRAME_SIZE; 1366 1367 BT_DBG("%s", hdev->name); 1368 1369 if (!data->bulk_rx_ep) 1370 return -ENODEV; 1371 1372 urb = usb_alloc_urb(0, mem_flags); 1373 if (!urb) 1374 return -ENOMEM; 1375 1376 buf = kmalloc(size, mem_flags); 1377 if (!buf) { 1378 usb_free_urb(urb); 1379 return -ENOMEM; 1380 } 1381 1382 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress); 1383 1384 usb_fill_bulk_urb(urb, data->udev, pipe, buf, size, 1385 btusb_bulk_complete, hdev); 1386 1387 urb->transfer_flags |= URB_FREE_BUFFER; 1388 1389 usb_mark_last_busy(data->udev); 1390 usb_anchor_urb(urb, &data->bulk_anchor); 1391 1392 err = usb_submit_urb(urb, mem_flags); 1393 if (err < 0) { 1394 if (err != -EPERM && err != -ENODEV) 1395 bt_dev_err(hdev, "urb %p submission failed (%d)", 1396 urb, -err); 1397 usb_unanchor_urb(urb); 1398 } 1399 1400 usb_free_urb(urb); 1401 1402 return err; 1403 } 1404 1405 static void btusb_isoc_complete(struct urb *urb) 1406 { 1407 struct hci_dev *hdev = urb->context; 1408 struct btusb_data *data = hci_get_drvdata(hdev); 1409 int i, err; 1410 1411 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, 1412 urb->actual_length); 1413 1414 if (!test_bit(HCI_RUNNING, &hdev->flags)) 1415 return; 1416 1417 if (urb->status == 0) { 1418 for (i = 0; i < urb->number_of_packets; i++) { 1419 unsigned int offset = urb->iso_frame_desc[i].offset; 1420 unsigned int length = urb->iso_frame_desc[i].actual_length; 1421 1422 if (urb->iso_frame_desc[i].status) 1423 continue; 1424 1425 hdev->stat.byte_rx += length; 1426 1427 if (btusb_recv_isoc(data, urb->transfer_buffer + offset, 1428 length) < 0) { 1429 bt_dev_err(hdev, "corrupted SCO packet"); 1430 hdev->stat.err_rx++; 1431 } 1432 } 1433 } else if (urb->status == -ENOENT) { 1434 /* Avoid suspend failed when usb_kill_urb */ 1435 return; 1436 } 1437 1438 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags)) 1439 return; 1440 1441 usb_anchor_urb(urb, &data->isoc_anchor); 1442 1443 err = usb_submit_urb(urb, GFP_ATOMIC); 1444 if (err < 0) { 1445 /* -EPERM: urb is being killed; 1446 * -ENODEV: device got disconnected 1447 */ 1448 if (err != -EPERM && err != -ENODEV) 1449 bt_dev_err(hdev, "urb %p failed to resubmit (%d)", 1450 urb, -err); 1451 usb_unanchor_urb(urb); 1452 } 1453 } 1454 1455 static inline void __fill_isoc_descriptor_msbc(struct urb *urb, int len, 1456 int mtu, struct btusb_data *data) 1457 { 1458 int i = 0, offset = 0; 1459 unsigned int interval; 1460 1461 BT_DBG("len %d mtu %d", len, mtu); 1462 1463 /* For mSBC ALT 6 settings some chips need to transmit the data 1464 * continuously without the zero length of USB packets. 1465 */ 1466 if (test_bit(BTUSB_ALT6_CONTINUOUS_TX, &data->flags)) 1467 goto ignore_usb_alt6_packet_flow; 1468 1469 /* For mSBC ALT 6 setting the host will send the packet at continuous 1470 * flow. As per core spec 5, vol 4, part B, table 2.1. For ALT setting 1471 * 6 the HCI PACKET INTERVAL should be 7.5ms for every usb packets. 1472 * To maintain the rate we send 63bytes of usb packets alternatively for 1473 * 7ms and 8ms to maintain the rate as 7.5ms. 1474 */ 1475 if (data->usb_alt6_packet_flow) { 1476 interval = 7; 1477 data->usb_alt6_packet_flow = false; 1478 } else { 1479 interval = 6; 1480 data->usb_alt6_packet_flow = true; 1481 } 1482 1483 for (i = 0; i < interval; i++) { 1484 urb->iso_frame_desc[i].offset = offset; 1485 urb->iso_frame_desc[i].length = offset; 1486 } 1487 1488 ignore_usb_alt6_packet_flow: 1489 if (len && i < BTUSB_MAX_ISOC_FRAMES) { 1490 urb->iso_frame_desc[i].offset = offset; 1491 urb->iso_frame_desc[i].length = len; 1492 i++; 1493 } 1494 1495 urb->number_of_packets = i; 1496 } 1497 1498 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu) 1499 { 1500 int i, offset = 0; 1501 1502 BT_DBG("len %d mtu %d", len, mtu); 1503 1504 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu; 1505 i++, offset += mtu, len -= mtu) { 1506 urb->iso_frame_desc[i].offset = offset; 1507 urb->iso_frame_desc[i].length = mtu; 1508 } 1509 1510 if (len && i < BTUSB_MAX_ISOC_FRAMES) { 1511 urb->iso_frame_desc[i].offset = offset; 1512 urb->iso_frame_desc[i].length = len; 1513 i++; 1514 } 1515 1516 urb->number_of_packets = i; 1517 } 1518 1519 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags) 1520 { 1521 struct btusb_data *data = hci_get_drvdata(hdev); 1522 struct urb *urb; 1523 unsigned char *buf; 1524 unsigned int pipe; 1525 int err, size; 1526 1527 BT_DBG("%s", hdev->name); 1528 1529 if (!data->isoc_rx_ep) 1530 return -ENODEV; 1531 1532 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags); 1533 if (!urb) 1534 return -ENOMEM; 1535 1536 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) * 1537 BTUSB_MAX_ISOC_FRAMES; 1538 1539 buf = kmalloc(size, mem_flags); 1540 if (!buf) { 1541 usb_free_urb(urb); 1542 return -ENOMEM; 1543 } 1544 1545 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress); 1546 1547 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete, 1548 hdev, data->isoc_rx_ep->bInterval); 1549 1550 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP; 1551 1552 __fill_isoc_descriptor(urb, size, 1553 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize)); 1554 1555 usb_anchor_urb(urb, &data->isoc_anchor); 1556 1557 err = usb_submit_urb(urb, mem_flags); 1558 if (err < 0) { 1559 if (err != -EPERM && err != -ENODEV) 1560 bt_dev_err(hdev, "urb %p submission failed (%d)", 1561 urb, -err); 1562 usb_unanchor_urb(urb); 1563 } 1564 1565 usb_free_urb(urb); 1566 1567 return err; 1568 } 1569 1570 static void btusb_diag_complete(struct urb *urb) 1571 { 1572 struct hci_dev *hdev = urb->context; 1573 struct btusb_data *data = hci_get_drvdata(hdev); 1574 int err; 1575 1576 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, 1577 urb->actual_length); 1578 1579 if (urb->status == 0) { 1580 struct sk_buff *skb; 1581 1582 skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC); 1583 if (skb) { 1584 skb_put_data(skb, urb->transfer_buffer, 1585 urb->actual_length); 1586 hci_recv_diag(hdev, skb); 1587 } 1588 } else if (urb->status == -ENOENT) { 1589 /* Avoid suspend failed when usb_kill_urb */ 1590 return; 1591 } 1592 1593 if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags)) 1594 return; 1595 1596 usb_anchor_urb(urb, &data->diag_anchor); 1597 usb_mark_last_busy(data->udev); 1598 1599 err = usb_submit_urb(urb, GFP_ATOMIC); 1600 if (err < 0) { 1601 /* -EPERM: urb is being killed; 1602 * -ENODEV: device got disconnected 1603 */ 1604 if (err != -EPERM && err != -ENODEV) 1605 bt_dev_err(hdev, "urb %p failed to resubmit (%d)", 1606 urb, -err); 1607 usb_unanchor_urb(urb); 1608 } 1609 } 1610 1611 static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags) 1612 { 1613 struct btusb_data *data = hci_get_drvdata(hdev); 1614 struct urb *urb; 1615 unsigned char *buf; 1616 unsigned int pipe; 1617 int err, size = HCI_MAX_FRAME_SIZE; 1618 1619 BT_DBG("%s", hdev->name); 1620 1621 if (!data->diag_rx_ep) 1622 return -ENODEV; 1623 1624 urb = usb_alloc_urb(0, mem_flags); 1625 if (!urb) 1626 return -ENOMEM; 1627 1628 buf = kmalloc(size, mem_flags); 1629 if (!buf) { 1630 usb_free_urb(urb); 1631 return -ENOMEM; 1632 } 1633 1634 pipe = usb_rcvbulkpipe(data->udev, data->diag_rx_ep->bEndpointAddress); 1635 1636 usb_fill_bulk_urb(urb, data->udev, pipe, buf, size, 1637 btusb_diag_complete, hdev); 1638 1639 urb->transfer_flags |= URB_FREE_BUFFER; 1640 1641 usb_mark_last_busy(data->udev); 1642 usb_anchor_urb(urb, &data->diag_anchor); 1643 1644 err = usb_submit_urb(urb, mem_flags); 1645 if (err < 0) { 1646 if (err != -EPERM && err != -ENODEV) 1647 bt_dev_err(hdev, "urb %p submission failed (%d)", 1648 urb, -err); 1649 usb_unanchor_urb(urb); 1650 } 1651 1652 usb_free_urb(urb); 1653 1654 return err; 1655 } 1656 1657 static void btusb_tx_complete(struct urb *urb) 1658 { 1659 struct sk_buff *skb = urb->context; 1660 struct hci_dev *hdev = (struct hci_dev *)skb->dev; 1661 struct btusb_data *data = hci_get_drvdata(hdev); 1662 unsigned long flags; 1663 1664 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, 1665 urb->actual_length); 1666 1667 if (!test_bit(HCI_RUNNING, &hdev->flags)) 1668 goto done; 1669 1670 if (!urb->status) { 1671 hdev->stat.byte_tx += urb->transfer_buffer_length; 1672 } else { 1673 if (hci_skb_pkt_type(skb) == HCI_COMMAND_PKT) 1674 hci_cmd_sync_cancel(hdev, -urb->status); 1675 hdev->stat.err_tx++; 1676 } 1677 1678 done: 1679 spin_lock_irqsave(&data->txlock, flags); 1680 data->tx_in_flight--; 1681 spin_unlock_irqrestore(&data->txlock, flags); 1682 1683 kfree(urb->setup_packet); 1684 1685 kfree_skb(skb); 1686 } 1687 1688 static void btusb_isoc_tx_complete(struct urb *urb) 1689 { 1690 struct sk_buff *skb = urb->context; 1691 struct hci_dev *hdev = (struct hci_dev *)skb->dev; 1692 1693 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, 1694 urb->actual_length); 1695 1696 if (!test_bit(HCI_RUNNING, &hdev->flags)) 1697 goto done; 1698 1699 if (!urb->status) 1700 hdev->stat.byte_tx += urb->transfer_buffer_length; 1701 else 1702 hdev->stat.err_tx++; 1703 1704 done: 1705 kfree(urb->setup_packet); 1706 1707 kfree_skb(skb); 1708 } 1709 1710 static int btusb_open(struct hci_dev *hdev) 1711 { 1712 struct btusb_data *data = hci_get_drvdata(hdev); 1713 int err; 1714 1715 BT_DBG("%s", hdev->name); 1716 1717 err = usb_autopm_get_interface(data->intf); 1718 if (err < 0) 1719 return err; 1720 1721 /* Patching USB firmware files prior to starting any URBs of HCI path 1722 * It is more safe to use USB bulk channel for downloading USB patch 1723 */ 1724 if (data->setup_on_usb) { 1725 err = data->setup_on_usb(hdev); 1726 if (err < 0) 1727 goto setup_fail; 1728 } 1729 1730 data->intf->needs_remote_wakeup = 1; 1731 1732 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags)) 1733 goto done; 1734 1735 err = btusb_submit_intr_urb(hdev, GFP_KERNEL); 1736 if (err < 0) 1737 goto failed; 1738 1739 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL); 1740 if (err < 0) { 1741 usb_kill_anchored_urbs(&data->intr_anchor); 1742 goto failed; 1743 } 1744 1745 set_bit(BTUSB_BULK_RUNNING, &data->flags); 1746 btusb_submit_bulk_urb(hdev, GFP_KERNEL); 1747 1748 if (data->diag) { 1749 if (!btusb_submit_diag_urb(hdev, GFP_KERNEL)) 1750 set_bit(BTUSB_DIAG_RUNNING, &data->flags); 1751 } 1752 1753 done: 1754 usb_autopm_put_interface(data->intf); 1755 return 0; 1756 1757 failed: 1758 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 1759 setup_fail: 1760 usb_autopm_put_interface(data->intf); 1761 return err; 1762 } 1763 1764 static void btusb_stop_traffic(struct btusb_data *data) 1765 { 1766 usb_kill_anchored_urbs(&data->intr_anchor); 1767 usb_kill_anchored_urbs(&data->bulk_anchor); 1768 usb_kill_anchored_urbs(&data->isoc_anchor); 1769 usb_kill_anchored_urbs(&data->diag_anchor); 1770 usb_kill_anchored_urbs(&data->ctrl_anchor); 1771 } 1772 1773 static int btusb_close(struct hci_dev *hdev) 1774 { 1775 struct btusb_data *data = hci_get_drvdata(hdev); 1776 int err; 1777 1778 BT_DBG("%s", hdev->name); 1779 1780 cancel_delayed_work(&data->rx_work); 1781 cancel_work_sync(&data->work); 1782 cancel_work_sync(&data->waker); 1783 1784 skb_queue_purge(&data->acl_q); 1785 1786 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1787 clear_bit(BTUSB_BULK_RUNNING, &data->flags); 1788 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 1789 clear_bit(BTUSB_DIAG_RUNNING, &data->flags); 1790 1791 btusb_stop_traffic(data); 1792 btusb_free_frags(data); 1793 1794 err = usb_autopm_get_interface(data->intf); 1795 if (err < 0) 1796 goto failed; 1797 1798 data->intf->needs_remote_wakeup = 0; 1799 1800 /* Enable remote wake up for auto-suspend */ 1801 if (test_bit(BTUSB_WAKEUP_AUTOSUSPEND, &data->flags)) 1802 data->intf->needs_remote_wakeup = 1; 1803 1804 usb_autopm_put_interface(data->intf); 1805 1806 failed: 1807 usb_scuttle_anchored_urbs(&data->deferred); 1808 return 0; 1809 } 1810 1811 static int btusb_flush(struct hci_dev *hdev) 1812 { 1813 struct btusb_data *data = hci_get_drvdata(hdev); 1814 1815 BT_DBG("%s", hdev->name); 1816 1817 cancel_delayed_work(&data->rx_work); 1818 1819 skb_queue_purge(&data->acl_q); 1820 1821 usb_kill_anchored_urbs(&data->tx_anchor); 1822 btusb_free_frags(data); 1823 1824 return 0; 1825 } 1826 1827 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb) 1828 { 1829 struct btusb_data *data = hci_get_drvdata(hdev); 1830 struct usb_ctrlrequest *dr; 1831 struct urb *urb; 1832 unsigned int pipe; 1833 1834 urb = usb_alloc_urb(0, GFP_KERNEL); 1835 if (!urb) 1836 return ERR_PTR(-ENOMEM); 1837 1838 dr = kmalloc(sizeof(*dr), GFP_KERNEL); 1839 if (!dr) { 1840 usb_free_urb(urb); 1841 return ERR_PTR(-ENOMEM); 1842 } 1843 1844 dr->bRequestType = data->cmdreq_type; 1845 dr->bRequest = data->cmdreq; 1846 dr->wIndex = 0; 1847 dr->wValue = 0; 1848 dr->wLength = __cpu_to_le16(skb->len); 1849 1850 pipe = usb_sndctrlpipe(data->udev, 0x00); 1851 1852 usb_fill_control_urb(urb, data->udev, pipe, (void *)dr, 1853 skb->data, skb->len, btusb_tx_complete, skb); 1854 1855 skb->dev = (void *)hdev; 1856 1857 return urb; 1858 } 1859 1860 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb) 1861 { 1862 struct btusb_data *data = hci_get_drvdata(hdev); 1863 struct urb *urb; 1864 unsigned int pipe; 1865 1866 if (!data->bulk_tx_ep) 1867 return ERR_PTR(-ENODEV); 1868 1869 urb = usb_alloc_urb(0, GFP_KERNEL); 1870 if (!urb) 1871 return ERR_PTR(-ENOMEM); 1872 1873 pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress); 1874 1875 usb_fill_bulk_urb(urb, data->udev, pipe, 1876 skb->data, skb->len, btusb_tx_complete, skb); 1877 1878 skb->dev = (void *)hdev; 1879 1880 return urb; 1881 } 1882 1883 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb) 1884 { 1885 struct btusb_data *data = hci_get_drvdata(hdev); 1886 struct urb *urb; 1887 unsigned int pipe; 1888 1889 if (!data->isoc_tx_ep) 1890 return ERR_PTR(-ENODEV); 1891 1892 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL); 1893 if (!urb) 1894 return ERR_PTR(-ENOMEM); 1895 1896 pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress); 1897 1898 usb_fill_int_urb(urb, data->udev, pipe, 1899 skb->data, skb->len, btusb_isoc_tx_complete, 1900 skb, data->isoc_tx_ep->bInterval); 1901 1902 urb->transfer_flags = URB_ISO_ASAP; 1903 1904 if (data->isoc_altsetting == 6) 1905 __fill_isoc_descriptor_msbc(urb, skb->len, 1906 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize), 1907 data); 1908 else 1909 __fill_isoc_descriptor(urb, skb->len, 1910 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize)); 1911 skb->dev = (void *)hdev; 1912 1913 return urb; 1914 } 1915 1916 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb) 1917 { 1918 struct btusb_data *data = hci_get_drvdata(hdev); 1919 int err; 1920 1921 usb_anchor_urb(urb, &data->tx_anchor); 1922 1923 err = usb_submit_urb(urb, GFP_KERNEL); 1924 if (err < 0) { 1925 if (err != -EPERM && err != -ENODEV) 1926 bt_dev_err(hdev, "urb %p submission failed (%d)", 1927 urb, -err); 1928 kfree(urb->setup_packet); 1929 usb_unanchor_urb(urb); 1930 } else { 1931 usb_mark_last_busy(data->udev); 1932 } 1933 1934 usb_free_urb(urb); 1935 return err; 1936 } 1937 1938 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb) 1939 { 1940 struct btusb_data *data = hci_get_drvdata(hdev); 1941 unsigned long flags; 1942 bool suspending; 1943 1944 spin_lock_irqsave(&data->txlock, flags); 1945 suspending = test_bit(BTUSB_SUSPENDING, &data->flags); 1946 if (!suspending) 1947 data->tx_in_flight++; 1948 spin_unlock_irqrestore(&data->txlock, flags); 1949 1950 if (!suspending) 1951 return submit_tx_urb(hdev, urb); 1952 1953 usb_anchor_urb(urb, &data->deferred); 1954 schedule_work(&data->waker); 1955 1956 usb_free_urb(urb); 1957 return 0; 1958 } 1959 1960 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb) 1961 { 1962 struct urb *urb; 1963 1964 BT_DBG("%s", hdev->name); 1965 1966 switch (hci_skb_pkt_type(skb)) { 1967 case HCI_COMMAND_PKT: 1968 urb = alloc_ctrl_urb(hdev, skb); 1969 if (IS_ERR(urb)) 1970 return PTR_ERR(urb); 1971 1972 hdev->stat.cmd_tx++; 1973 return submit_or_queue_tx_urb(hdev, urb); 1974 1975 case HCI_ACLDATA_PKT: 1976 urb = alloc_bulk_urb(hdev, skb); 1977 if (IS_ERR(urb)) 1978 return PTR_ERR(urb); 1979 1980 hdev->stat.acl_tx++; 1981 return submit_or_queue_tx_urb(hdev, urb); 1982 1983 case HCI_SCODATA_PKT: 1984 if (hci_conn_num(hdev, SCO_LINK) < 1) 1985 return -ENODEV; 1986 1987 urb = alloc_isoc_urb(hdev, skb); 1988 if (IS_ERR(urb)) 1989 return PTR_ERR(urb); 1990 1991 hdev->stat.sco_tx++; 1992 return submit_tx_urb(hdev, urb); 1993 1994 case HCI_ISODATA_PKT: 1995 urb = alloc_bulk_urb(hdev, skb); 1996 if (IS_ERR(urb)) 1997 return PTR_ERR(urb); 1998 1999 return submit_or_queue_tx_urb(hdev, urb); 2000 } 2001 2002 return -EILSEQ; 2003 } 2004 2005 static void btusb_notify(struct hci_dev *hdev, unsigned int evt) 2006 { 2007 struct btusb_data *data = hci_get_drvdata(hdev); 2008 2009 BT_DBG("%s evt %d", hdev->name, evt); 2010 2011 if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) { 2012 data->sco_num = hci_conn_num(hdev, SCO_LINK); 2013 data->air_mode = evt; 2014 schedule_work(&data->work); 2015 } 2016 } 2017 2018 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting) 2019 { 2020 struct btusb_data *data = hci_get_drvdata(hdev); 2021 struct usb_interface *intf = data->isoc; 2022 struct usb_endpoint_descriptor *ep_desc; 2023 int i, err; 2024 2025 if (!data->isoc) 2026 return -ENODEV; 2027 2028 err = usb_set_interface(data->udev, data->isoc_ifnum, altsetting); 2029 if (err < 0) { 2030 bt_dev_err(hdev, "setting interface failed (%d)", -err); 2031 return err; 2032 } 2033 2034 data->isoc_altsetting = altsetting; 2035 2036 data->isoc_tx_ep = NULL; 2037 data->isoc_rx_ep = NULL; 2038 2039 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { 2040 ep_desc = &intf->cur_altsetting->endpoint[i].desc; 2041 2042 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) { 2043 data->isoc_tx_ep = ep_desc; 2044 continue; 2045 } 2046 2047 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) { 2048 data->isoc_rx_ep = ep_desc; 2049 continue; 2050 } 2051 } 2052 2053 if (!data->isoc_tx_ep || !data->isoc_rx_ep) { 2054 bt_dev_err(hdev, "invalid SCO descriptors"); 2055 return -ENODEV; 2056 } 2057 2058 return 0; 2059 } 2060 2061 static int btusb_switch_alt_setting(struct hci_dev *hdev, int new_alts) 2062 { 2063 struct btusb_data *data = hci_get_drvdata(hdev); 2064 int err; 2065 2066 if (data->isoc_altsetting != new_alts) { 2067 unsigned long flags; 2068 2069 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 2070 usb_kill_anchored_urbs(&data->isoc_anchor); 2071 2072 /* When isochronous alternate setting needs to be 2073 * changed, because SCO connection has been added 2074 * or removed, a packet fragment may be left in the 2075 * reassembling state. This could lead to wrongly 2076 * assembled fragments. 2077 * 2078 * Clear outstanding fragment when selecting a new 2079 * alternate setting. 2080 */ 2081 spin_lock_irqsave(&data->rxlock, flags); 2082 kfree_skb(data->sco_skb); 2083 data->sco_skb = NULL; 2084 spin_unlock_irqrestore(&data->rxlock, flags); 2085 2086 err = __set_isoc_interface(hdev, new_alts); 2087 if (err < 0) 2088 return err; 2089 } 2090 2091 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) { 2092 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0) 2093 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 2094 else 2095 btusb_submit_isoc_urb(hdev, GFP_KERNEL); 2096 } 2097 2098 return 0; 2099 } 2100 2101 static struct usb_host_interface *btusb_find_altsetting(struct btusb_data *data, 2102 int alt) 2103 { 2104 struct usb_interface *intf = data->isoc; 2105 int i; 2106 2107 BT_DBG("Looking for Alt no :%d", alt); 2108 2109 if (!intf) 2110 return NULL; 2111 2112 for (i = 0; i < intf->num_altsetting; i++) { 2113 if (intf->altsetting[i].desc.bAlternateSetting == alt) 2114 return &intf->altsetting[i]; 2115 } 2116 2117 return NULL; 2118 } 2119 2120 static void btusb_work(struct work_struct *work) 2121 { 2122 struct btusb_data *data = container_of(work, struct btusb_data, work); 2123 struct hci_dev *hdev = data->hdev; 2124 int new_alts = 0; 2125 int err; 2126 2127 if (data->sco_num > 0) { 2128 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) { 2129 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf); 2130 if (err < 0) { 2131 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 2132 usb_kill_anchored_urbs(&data->isoc_anchor); 2133 return; 2134 } 2135 2136 set_bit(BTUSB_DID_ISO_RESUME, &data->flags); 2137 } 2138 2139 if (data->air_mode == HCI_NOTIFY_ENABLE_SCO_CVSD) { 2140 if (hdev->voice_setting & 0x0020) { 2141 static const int alts[3] = { 2, 4, 5 }; 2142 2143 new_alts = alts[data->sco_num - 1]; 2144 } else { 2145 new_alts = data->sco_num; 2146 } 2147 } else if (data->air_mode == HCI_NOTIFY_ENABLE_SCO_TRANSP) { 2148 /* Bluetooth USB spec recommends alt 6 (63 bytes), but 2149 * many adapters do not support it. Alt 1 appears to 2150 * work for all adapters that do not have alt 6, and 2151 * which work with WBS at all. Some devices prefer 2152 * alt 3 (HCI payload >= 60 Bytes let air packet 2153 * data satisfy 60 bytes), requiring 2154 * MTU >= 3 (packets) * 25 (size) - 3 (headers) = 72 2155 * see also Core spec 5, vol 4, B 2.1.1 & Table 2.1. 2156 */ 2157 if (btusb_find_altsetting(data, 6)) 2158 new_alts = 6; 2159 else if (btusb_find_altsetting(data, 3) && 2160 hdev->sco_mtu >= 72 && 2161 test_bit(BTUSB_USE_ALT3_FOR_WBS, &data->flags)) 2162 new_alts = 3; 2163 else 2164 new_alts = 1; 2165 } 2166 2167 if (btusb_switch_alt_setting(hdev, new_alts) < 0) 2168 bt_dev_err(hdev, "set USB alt:(%d) failed!", new_alts); 2169 } else { 2170 usb_kill_anchored_urbs(&data->isoc_anchor); 2171 2172 if (test_and_clear_bit(BTUSB_ISOC_RUNNING, &data->flags)) 2173 __set_isoc_interface(hdev, 0); 2174 2175 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags)) 2176 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf); 2177 } 2178 } 2179 2180 static void btusb_waker(struct work_struct *work) 2181 { 2182 struct btusb_data *data = container_of(work, struct btusb_data, waker); 2183 int err; 2184 2185 err = usb_autopm_get_interface(data->intf); 2186 if (err < 0) 2187 return; 2188 2189 usb_autopm_put_interface(data->intf); 2190 } 2191 2192 static void btusb_rx_work(struct work_struct *work) 2193 { 2194 struct btusb_data *data = container_of(work, struct btusb_data, 2195 rx_work.work); 2196 struct sk_buff *skb; 2197 2198 /* Dequeue ACL data received during the interval */ 2199 while ((skb = skb_dequeue(&data->acl_q))) 2200 data->recv_acl(data->hdev, skb); 2201 } 2202 2203 static int btusb_setup_bcm92035(struct hci_dev *hdev) 2204 { 2205 struct sk_buff *skb; 2206 u8 val = 0x00; 2207 2208 BT_DBG("%s", hdev->name); 2209 2210 skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT); 2211 if (IS_ERR(skb)) 2212 bt_dev_err(hdev, "BCM92035 command failed (%ld)", PTR_ERR(skb)); 2213 else 2214 kfree_skb(skb); 2215 2216 return 0; 2217 } 2218 2219 static int btusb_setup_csr(struct hci_dev *hdev) 2220 { 2221 struct btusb_data *data = hci_get_drvdata(hdev); 2222 u16 bcdDevice = le16_to_cpu(data->udev->descriptor.bcdDevice); 2223 struct hci_rp_read_local_version *rp; 2224 struct sk_buff *skb; 2225 bool is_fake = false; 2226 int ret; 2227 2228 BT_DBG("%s", hdev->name); 2229 2230 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL, 2231 HCI_INIT_TIMEOUT); 2232 if (IS_ERR(skb)) { 2233 int err = PTR_ERR(skb); 2234 bt_dev_err(hdev, "CSR: Local version failed (%d)", err); 2235 return err; 2236 } 2237 2238 rp = skb_pull_data(skb, sizeof(*rp)); 2239 if (!rp) { 2240 bt_dev_err(hdev, "CSR: Local version length mismatch"); 2241 kfree_skb(skb); 2242 return -EIO; 2243 } 2244 2245 bt_dev_info(hdev, "CSR: Setting up dongle with HCI ver=%u rev=%04x", 2246 rp->hci_ver, le16_to_cpu(rp->hci_rev)); 2247 2248 bt_dev_info(hdev, "LMP ver=%u subver=%04x; manufacturer=%u", 2249 rp->lmp_ver, le16_to_cpu(rp->lmp_subver), 2250 le16_to_cpu(rp->manufacturer)); 2251 2252 /* Detect a wide host of Chinese controllers that aren't CSR. 2253 * 2254 * Known fake bcdDevices: 0x0100, 0x0134, 0x1915, 0x2520, 0x7558, 0x8891 2255 * 2256 * The main thing they have in common is that these are really popular low-cost 2257 * options that support newer Bluetooth versions but rely on heavy VID/PID 2258 * squatting of this poor old Bluetooth 1.1 device. Even sold as such. 2259 * 2260 * We detect actual CSR devices by checking that the HCI manufacturer code 2261 * is Cambridge Silicon Radio (10) and ensuring that LMP sub-version and 2262 * HCI rev values always match. As they both store the firmware number. 2263 */ 2264 if (le16_to_cpu(rp->manufacturer) != 10 || 2265 le16_to_cpu(rp->hci_rev) != le16_to_cpu(rp->lmp_subver)) 2266 is_fake = true; 2267 2268 /* Known legit CSR firmware build numbers and their supported BT versions: 2269 * - 1.1 (0x1) -> 0x0073, 0x020d, 0x033c, 0x034e 2270 * - 1.2 (0x2) -> 0x04d9, 0x0529 2271 * - 2.0 (0x3) -> 0x07a6, 0x07ad, 0x0c5c 2272 * - 2.1 (0x4) -> 0x149c, 0x1735, 0x1899 (0x1899 is a BlueCore4-External) 2273 * - 4.0 (0x6) -> 0x1d86, 0x2031, 0x22bb 2274 * 2275 * e.g. Real CSR dongles with LMP subversion 0x73 are old enough that 2276 * support BT 1.1 only; so it's a dead giveaway when some 2277 * third-party BT 4.0 dongle reuses it. 2278 */ 2279 else if (le16_to_cpu(rp->lmp_subver) <= 0x034e && 2280 rp->hci_ver > BLUETOOTH_VER_1_1) 2281 is_fake = true; 2282 2283 else if (le16_to_cpu(rp->lmp_subver) <= 0x0529 && 2284 rp->hci_ver > BLUETOOTH_VER_1_2) 2285 is_fake = true; 2286 2287 else if (le16_to_cpu(rp->lmp_subver) <= 0x0c5c && 2288 rp->hci_ver > BLUETOOTH_VER_2_0) 2289 is_fake = true; 2290 2291 else if (le16_to_cpu(rp->lmp_subver) <= 0x1899 && 2292 rp->hci_ver > BLUETOOTH_VER_2_1) 2293 is_fake = true; 2294 2295 else if (le16_to_cpu(rp->lmp_subver) <= 0x22bb && 2296 rp->hci_ver > BLUETOOTH_VER_4_0) 2297 is_fake = true; 2298 2299 /* Other clones which beat all the above checks */ 2300 else if (bcdDevice == 0x0134 && 2301 le16_to_cpu(rp->lmp_subver) == 0x0c5c && 2302 rp->hci_ver == BLUETOOTH_VER_2_0) 2303 is_fake = true; 2304 2305 if (is_fake) { 2306 bt_dev_warn(hdev, "CSR: Unbranded CSR clone detected; adding workarounds and force-suspending once..."); 2307 2308 /* Generally these clones have big discrepancies between 2309 * advertised features and what's actually supported. 2310 * Probably will need to be expanded in the future; 2311 * without these the controller will lock up. 2312 */ 2313 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks); 2314 set_bit(HCI_QUIRK_BROKEN_ERR_DATA_REPORTING, &hdev->quirks); 2315 set_bit(HCI_QUIRK_BROKEN_FILTER_CLEAR_ALL, &hdev->quirks); 2316 set_bit(HCI_QUIRK_NO_SUSPEND_NOTIFIER, &hdev->quirks); 2317 2318 /* Clear the reset quirk since this is not an actual 2319 * early Bluetooth 1.1 device from CSR. 2320 */ 2321 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); 2322 clear_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); 2323 2324 /* 2325 * Special workaround for these BT 4.0 chip clones, and potentially more: 2326 * 2327 * - 0x0134: a Barrot 8041a02 (HCI rev: 0x0810 sub: 0x1012) 2328 * - 0x7558: IC markings FR3191AHAL 749H15143 (HCI rev/sub-version: 0x0709) 2329 * 2330 * These controllers are really messed-up. 2331 * 2332 * 1. Their bulk RX endpoint will never report any data unless 2333 * the device was suspended at least once (yes, really). 2334 * 2. They will not wakeup when autosuspended and receiving data 2335 * on their bulk RX endpoint from e.g. a keyboard or mouse 2336 * (IOW remote-wakeup support is broken for the bulk endpoint). 2337 * 2338 * To fix 1. enable runtime-suspend, force-suspend the 2339 * HCI and then wake-it up by disabling runtime-suspend. 2340 * 2341 * To fix 2. clear the HCI's can_wake flag, this way the HCI 2342 * will still be autosuspended when it is not open. 2343 * 2344 * -- 2345 * 2346 * Because these are widespread problems we prefer generic solutions; so 2347 * apply this initialization quirk to every controller that gets here, 2348 * it should be harmless. The alternative is to not work at all. 2349 */ 2350 pm_runtime_allow(&data->udev->dev); 2351 2352 ret = pm_runtime_suspend(&data->udev->dev); 2353 if (ret >= 0) 2354 msleep(200); 2355 else 2356 bt_dev_warn(hdev, "CSR: Couldn't suspend the device for our Barrot 8041a02 receive-issue workaround"); 2357 2358 pm_runtime_forbid(&data->udev->dev); 2359 2360 device_set_wakeup_capable(&data->udev->dev, false); 2361 2362 /* Re-enable autosuspend if this was requested */ 2363 if (enable_autosuspend) 2364 usb_enable_autosuspend(data->udev); 2365 } 2366 2367 kfree_skb(skb); 2368 2369 return 0; 2370 } 2371 2372 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode) 2373 { 2374 struct sk_buff *skb; 2375 struct hci_event_hdr *hdr; 2376 struct hci_ev_cmd_complete *evt; 2377 2378 skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_KERNEL); 2379 if (!skb) 2380 return -ENOMEM; 2381 2382 hdr = skb_put(skb, sizeof(*hdr)); 2383 hdr->evt = HCI_EV_CMD_COMPLETE; 2384 hdr->plen = sizeof(*evt) + 1; 2385 2386 evt = skb_put(skb, sizeof(*evt)); 2387 evt->ncmd = 0x01; 2388 evt->opcode = cpu_to_le16(opcode); 2389 2390 skb_put_u8(skb, 0x00); 2391 2392 hci_skb_pkt_type(skb) = HCI_EVENT_PKT; 2393 2394 return hci_recv_frame(hdev, skb); 2395 } 2396 2397 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer, 2398 int count) 2399 { 2400 struct hci_dev *hdev = data->hdev; 2401 2402 /* When the device is in bootloader mode, then it can send 2403 * events via the bulk endpoint. These events are treated the 2404 * same way as the ones received from the interrupt endpoint. 2405 */ 2406 if (btintel_test_flag(hdev, INTEL_BOOTLOADER)) 2407 return btusb_recv_intr(data, buffer, count); 2408 2409 return btusb_recv_bulk(data, buffer, count); 2410 } 2411 2412 static int btusb_intel_diagnostics(struct hci_dev *hdev, struct sk_buff *skb) 2413 { 2414 struct intel_tlv *tlv = (void *)&skb->data[5]; 2415 2416 /* The first event is always an event type TLV */ 2417 if (tlv->type != INTEL_TLV_TYPE_ID) 2418 goto recv_frame; 2419 2420 switch (tlv->val[0]) { 2421 case INTEL_TLV_SYSTEM_EXCEPTION: 2422 case INTEL_TLV_FATAL_EXCEPTION: 2423 case INTEL_TLV_DEBUG_EXCEPTION: 2424 case INTEL_TLV_TEST_EXCEPTION: 2425 /* Generate devcoredump from exception */ 2426 if (!hci_devcd_init(hdev, skb->len)) { 2427 hci_devcd_append(hdev, skb); 2428 hci_devcd_complete(hdev); 2429 } else { 2430 bt_dev_err(hdev, "Failed to generate devcoredump"); 2431 kfree_skb(skb); 2432 } 2433 return 0; 2434 default: 2435 bt_dev_err(hdev, "Invalid exception type %02X", tlv->val[0]); 2436 } 2437 2438 recv_frame: 2439 return hci_recv_frame(hdev, skb); 2440 } 2441 2442 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb) 2443 { 2444 struct hci_event_hdr *hdr = (void *)skb->data; 2445 const char diagnostics_hdr[] = { 0x87, 0x80, 0x03 }; 2446 2447 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff && 2448 hdr->plen > 0) { 2449 const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1; 2450 unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1; 2451 2452 if (btintel_test_flag(hdev, INTEL_BOOTLOADER)) { 2453 switch (skb->data[2]) { 2454 case 0x02: 2455 /* When switching to the operational firmware 2456 * the device sends a vendor specific event 2457 * indicating that the bootup completed. 2458 */ 2459 btintel_bootup(hdev, ptr, len); 2460 break; 2461 case 0x06: 2462 /* When the firmware loading completes the 2463 * device sends out a vendor specific event 2464 * indicating the result of the firmware 2465 * loading. 2466 */ 2467 btintel_secure_send_result(hdev, ptr, len); 2468 break; 2469 } 2470 } 2471 2472 /* Handle all diagnostics events separately. May still call 2473 * hci_recv_frame. 2474 */ 2475 if (len >= sizeof(diagnostics_hdr) && 2476 memcmp(&skb->data[2], diagnostics_hdr, 2477 sizeof(diagnostics_hdr)) == 0) { 2478 return btusb_intel_diagnostics(hdev, skb); 2479 } 2480 } 2481 2482 return hci_recv_frame(hdev, skb); 2483 } 2484 2485 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb) 2486 { 2487 struct urb *urb; 2488 2489 BT_DBG("%s", hdev->name); 2490 2491 switch (hci_skb_pkt_type(skb)) { 2492 case HCI_COMMAND_PKT: 2493 if (btintel_test_flag(hdev, INTEL_BOOTLOADER)) { 2494 struct hci_command_hdr *cmd = (void *)skb->data; 2495 __u16 opcode = le16_to_cpu(cmd->opcode); 2496 2497 /* When in bootloader mode and the command 0xfc09 2498 * is received, it needs to be send down the 2499 * bulk endpoint. So allocate a bulk URB instead. 2500 */ 2501 if (opcode == 0xfc09) 2502 urb = alloc_bulk_urb(hdev, skb); 2503 else 2504 urb = alloc_ctrl_urb(hdev, skb); 2505 2506 /* When the 0xfc01 command is issued to boot into 2507 * the operational firmware, it will actually not 2508 * send a command complete event. To keep the flow 2509 * control working inject that event here. 2510 */ 2511 if (opcode == 0xfc01) 2512 inject_cmd_complete(hdev, opcode); 2513 } else { 2514 urb = alloc_ctrl_urb(hdev, skb); 2515 } 2516 if (IS_ERR(urb)) 2517 return PTR_ERR(urb); 2518 2519 hdev->stat.cmd_tx++; 2520 return submit_or_queue_tx_urb(hdev, urb); 2521 2522 case HCI_ACLDATA_PKT: 2523 urb = alloc_bulk_urb(hdev, skb); 2524 if (IS_ERR(urb)) 2525 return PTR_ERR(urb); 2526 2527 hdev->stat.acl_tx++; 2528 return submit_or_queue_tx_urb(hdev, urb); 2529 2530 case HCI_SCODATA_PKT: 2531 if (hci_conn_num(hdev, SCO_LINK) < 1) 2532 return -ENODEV; 2533 2534 urb = alloc_isoc_urb(hdev, skb); 2535 if (IS_ERR(urb)) 2536 return PTR_ERR(urb); 2537 2538 hdev->stat.sco_tx++; 2539 return submit_tx_urb(hdev, urb); 2540 2541 case HCI_ISODATA_PKT: 2542 urb = alloc_bulk_urb(hdev, skb); 2543 if (IS_ERR(urb)) 2544 return PTR_ERR(urb); 2545 2546 return submit_or_queue_tx_urb(hdev, urb); 2547 } 2548 2549 return -EILSEQ; 2550 } 2551 2552 static int btusb_setup_realtek(struct hci_dev *hdev) 2553 { 2554 struct btusb_data *data = hci_get_drvdata(hdev); 2555 int ret; 2556 2557 ret = btrtl_setup_realtek(hdev); 2558 2559 if (btrealtek_test_flag(data->hdev, REALTEK_ALT6_CONTINUOUS_TX_CHIP)) 2560 set_bit(BTUSB_ALT6_CONTINUOUS_TX, &data->flags); 2561 2562 return ret; 2563 } 2564 2565 /* UHW CR mapping */ 2566 #define MTK_BT_MISC 0x70002510 2567 #define MTK_BT_SUBSYS_RST 0x70002610 2568 #define MTK_UDMA_INT_STA_BT 0x74000024 2569 #define MTK_UDMA_INT_STA_BT1 0x74000308 2570 #define MTK_BT_WDT_STATUS 0x740003A0 2571 #define MTK_EP_RST_OPT 0x74011890 2572 #define MTK_EP_RST_IN_OUT_OPT 0x00010001 2573 #define MTK_BT_RST_DONE 0x00000100 2574 #define MTK_BT_RESET_WAIT_MS 100 2575 #define MTK_BT_RESET_NUM_TRIES 10 2576 2577 static void btusb_mtk_wmt_recv(struct urb *urb) 2578 { 2579 struct hci_dev *hdev = urb->context; 2580 struct btusb_data *data = hci_get_drvdata(hdev); 2581 struct sk_buff *skb; 2582 int err; 2583 2584 if (urb->status == 0 && urb->actual_length > 0) { 2585 hdev->stat.byte_rx += urb->actual_length; 2586 2587 /* WMT event shouldn't be fragmented and the size should be 2588 * less than HCI_WMT_MAX_EVENT_SIZE. 2589 */ 2590 skb = bt_skb_alloc(HCI_WMT_MAX_EVENT_SIZE, GFP_ATOMIC); 2591 if (!skb) { 2592 hdev->stat.err_rx++; 2593 kfree(urb->setup_packet); 2594 return; 2595 } 2596 2597 hci_skb_pkt_type(skb) = HCI_EVENT_PKT; 2598 skb_put_data(skb, urb->transfer_buffer, urb->actual_length); 2599 2600 /* When someone waits for the WMT event, the skb is being cloned 2601 * and being processed the events from there then. 2602 */ 2603 if (test_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags)) { 2604 data->evt_skb = skb_clone(skb, GFP_ATOMIC); 2605 if (!data->evt_skb) { 2606 kfree_skb(skb); 2607 kfree(urb->setup_packet); 2608 return; 2609 } 2610 } 2611 2612 err = hci_recv_frame(hdev, skb); 2613 if (err < 0) { 2614 kfree_skb(data->evt_skb); 2615 data->evt_skb = NULL; 2616 kfree(urb->setup_packet); 2617 return; 2618 } 2619 2620 if (test_and_clear_bit(BTUSB_TX_WAIT_VND_EVT, 2621 &data->flags)) { 2622 /* Barrier to sync with other CPUs */ 2623 smp_mb__after_atomic(); 2624 wake_up_bit(&data->flags, 2625 BTUSB_TX_WAIT_VND_EVT); 2626 } 2627 kfree(urb->setup_packet); 2628 return; 2629 } else if (urb->status == -ENOENT) { 2630 /* Avoid suspend failed when usb_kill_urb */ 2631 return; 2632 } 2633 2634 usb_mark_last_busy(data->udev); 2635 2636 /* The URB complete handler is still called with urb->actual_length = 0 2637 * when the event is not available, so we should keep re-submitting 2638 * URB until WMT event returns, Also, It's necessary to wait some time 2639 * between the two consecutive control URBs to relax the target device 2640 * to generate the event. Otherwise, the WMT event cannot return from 2641 * the device successfully. 2642 */ 2643 udelay(500); 2644 2645 usb_anchor_urb(urb, &data->ctrl_anchor); 2646 err = usb_submit_urb(urb, GFP_ATOMIC); 2647 if (err < 0) { 2648 kfree(urb->setup_packet); 2649 /* -EPERM: urb is being killed; 2650 * -ENODEV: device got disconnected 2651 */ 2652 if (err != -EPERM && err != -ENODEV) 2653 bt_dev_err(hdev, "urb %p failed to resubmit (%d)", 2654 urb, -err); 2655 usb_unanchor_urb(urb); 2656 } 2657 } 2658 2659 static int btusb_mtk_submit_wmt_recv_urb(struct hci_dev *hdev) 2660 { 2661 struct btusb_data *data = hci_get_drvdata(hdev); 2662 struct usb_ctrlrequest *dr; 2663 unsigned char *buf; 2664 int err, size = 64; 2665 unsigned int pipe; 2666 struct urb *urb; 2667 2668 urb = usb_alloc_urb(0, GFP_KERNEL); 2669 if (!urb) 2670 return -ENOMEM; 2671 2672 dr = kmalloc(sizeof(*dr), GFP_KERNEL); 2673 if (!dr) { 2674 usb_free_urb(urb); 2675 return -ENOMEM; 2676 } 2677 2678 dr->bRequestType = USB_TYPE_VENDOR | USB_DIR_IN; 2679 dr->bRequest = 1; 2680 dr->wIndex = cpu_to_le16(0); 2681 dr->wValue = cpu_to_le16(48); 2682 dr->wLength = cpu_to_le16(size); 2683 2684 buf = kmalloc(size, GFP_KERNEL); 2685 if (!buf) { 2686 kfree(dr); 2687 usb_free_urb(urb); 2688 return -ENOMEM; 2689 } 2690 2691 pipe = usb_rcvctrlpipe(data->udev, 0); 2692 2693 usb_fill_control_urb(urb, data->udev, pipe, (void *)dr, 2694 buf, size, btusb_mtk_wmt_recv, hdev); 2695 2696 urb->transfer_flags |= URB_FREE_BUFFER; 2697 2698 usb_anchor_urb(urb, &data->ctrl_anchor); 2699 err = usb_submit_urb(urb, GFP_KERNEL); 2700 if (err < 0) { 2701 if (err != -EPERM && err != -ENODEV) 2702 bt_dev_err(hdev, "urb %p submission failed (%d)", 2703 urb, -err); 2704 usb_unanchor_urb(urb); 2705 } 2706 2707 usb_free_urb(urb); 2708 2709 return err; 2710 } 2711 2712 static int btusb_mtk_hci_wmt_sync(struct hci_dev *hdev, 2713 struct btmtk_hci_wmt_params *wmt_params) 2714 { 2715 struct btusb_data *data = hci_get_drvdata(hdev); 2716 struct btmtk_hci_wmt_evt_funcc *wmt_evt_funcc; 2717 u32 hlen, status = BTMTK_WMT_INVALID; 2718 struct btmtk_hci_wmt_evt *wmt_evt; 2719 struct btmtk_hci_wmt_cmd *wc; 2720 struct btmtk_wmt_hdr *hdr; 2721 int err; 2722 2723 /* Send the WMT command and wait until the WMT event returns */ 2724 hlen = sizeof(*hdr) + wmt_params->dlen; 2725 if (hlen > 255) 2726 return -EINVAL; 2727 2728 wc = kzalloc(hlen, GFP_KERNEL); 2729 if (!wc) 2730 return -ENOMEM; 2731 2732 hdr = &wc->hdr; 2733 hdr->dir = 1; 2734 hdr->op = wmt_params->op; 2735 hdr->dlen = cpu_to_le16(wmt_params->dlen + 1); 2736 hdr->flag = wmt_params->flag; 2737 memcpy(wc->data, wmt_params->data, wmt_params->dlen); 2738 2739 set_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags); 2740 2741 /* WMT cmd/event doesn't follow up the generic HCI cmd/event handling, 2742 * it needs constantly polling control pipe until the host received the 2743 * WMT event, thus, we should require to specifically acquire PM counter 2744 * on the USB to prevent the interface from entering auto suspended 2745 * while WMT cmd/event in progress. 2746 */ 2747 err = usb_autopm_get_interface(data->intf); 2748 if (err < 0) 2749 goto err_free_wc; 2750 2751 err = __hci_cmd_send(hdev, 0xfc6f, hlen, wc); 2752 2753 if (err < 0) { 2754 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags); 2755 usb_autopm_put_interface(data->intf); 2756 goto err_free_wc; 2757 } 2758 2759 /* Submit control IN URB on demand to process the WMT event */ 2760 err = btusb_mtk_submit_wmt_recv_urb(hdev); 2761 2762 usb_autopm_put_interface(data->intf); 2763 2764 if (err < 0) 2765 goto err_free_wc; 2766 2767 /* The vendor specific WMT commands are all answered by a vendor 2768 * specific event and will have the Command Status or Command 2769 * Complete as with usual HCI command flow control. 2770 * 2771 * After sending the command, wait for BTUSB_TX_WAIT_VND_EVT 2772 * state to be cleared. The driver specific event receive routine 2773 * will clear that state and with that indicate completion of the 2774 * WMT command. 2775 */ 2776 err = wait_on_bit_timeout(&data->flags, BTUSB_TX_WAIT_VND_EVT, 2777 TASK_INTERRUPTIBLE, HCI_INIT_TIMEOUT); 2778 if (err == -EINTR) { 2779 bt_dev_err(hdev, "Execution of wmt command interrupted"); 2780 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags); 2781 goto err_free_wc; 2782 } 2783 2784 if (err) { 2785 bt_dev_err(hdev, "Execution of wmt command timed out"); 2786 clear_bit(BTUSB_TX_WAIT_VND_EVT, &data->flags); 2787 err = -ETIMEDOUT; 2788 goto err_free_wc; 2789 } 2790 2791 /* Parse and handle the return WMT event */ 2792 wmt_evt = (struct btmtk_hci_wmt_evt *)data->evt_skb->data; 2793 if (wmt_evt->whdr.op != hdr->op) { 2794 bt_dev_err(hdev, "Wrong op received %d expected %d", 2795 wmt_evt->whdr.op, hdr->op); 2796 err = -EIO; 2797 goto err_free_skb; 2798 } 2799 2800 switch (wmt_evt->whdr.op) { 2801 case BTMTK_WMT_SEMAPHORE: 2802 if (wmt_evt->whdr.flag == 2) 2803 status = BTMTK_WMT_PATCH_UNDONE; 2804 else 2805 status = BTMTK_WMT_PATCH_DONE; 2806 break; 2807 case BTMTK_WMT_FUNC_CTRL: 2808 wmt_evt_funcc = (struct btmtk_hci_wmt_evt_funcc *)wmt_evt; 2809 if (be16_to_cpu(wmt_evt_funcc->status) == 0x404) 2810 status = BTMTK_WMT_ON_DONE; 2811 else if (be16_to_cpu(wmt_evt_funcc->status) == 0x420) 2812 status = BTMTK_WMT_ON_PROGRESS; 2813 else 2814 status = BTMTK_WMT_ON_UNDONE; 2815 break; 2816 case BTMTK_WMT_PATCH_DWNLD: 2817 if (wmt_evt->whdr.flag == 2) 2818 status = BTMTK_WMT_PATCH_DONE; 2819 else if (wmt_evt->whdr.flag == 1) 2820 status = BTMTK_WMT_PATCH_PROGRESS; 2821 else 2822 status = BTMTK_WMT_PATCH_UNDONE; 2823 break; 2824 } 2825 2826 if (wmt_params->status) 2827 *wmt_params->status = status; 2828 2829 err_free_skb: 2830 kfree_skb(data->evt_skb); 2831 data->evt_skb = NULL; 2832 err_free_wc: 2833 kfree(wc); 2834 return err; 2835 } 2836 2837 static int btusb_mtk_func_query(struct hci_dev *hdev) 2838 { 2839 struct btmtk_hci_wmt_params wmt_params; 2840 int status, err; 2841 u8 param = 0; 2842 2843 /* Query whether the function is enabled */ 2844 wmt_params.op = BTMTK_WMT_FUNC_CTRL; 2845 wmt_params.flag = 4; 2846 wmt_params.dlen = sizeof(param); 2847 wmt_params.data = ¶m; 2848 wmt_params.status = &status; 2849 2850 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params); 2851 if (err < 0) { 2852 bt_dev_err(hdev, "Failed to query function status (%d)", err); 2853 return err; 2854 } 2855 2856 return status; 2857 } 2858 2859 static int btusb_mtk_uhw_reg_write(struct btusb_data *data, u32 reg, u32 val) 2860 { 2861 struct hci_dev *hdev = data->hdev; 2862 int pipe, err; 2863 void *buf; 2864 2865 buf = kzalloc(4, GFP_KERNEL); 2866 if (!buf) 2867 return -ENOMEM; 2868 2869 put_unaligned_le32(val, buf); 2870 2871 pipe = usb_sndctrlpipe(data->udev, 0); 2872 err = usb_control_msg(data->udev, pipe, 0x02, 2873 0x5E, 2874 reg >> 16, reg & 0xffff, 2875 buf, 4, USB_CTRL_SET_TIMEOUT); 2876 if (err < 0) { 2877 bt_dev_err(hdev, "Failed to write uhw reg(%d)", err); 2878 goto err_free_buf; 2879 } 2880 2881 err_free_buf: 2882 kfree(buf); 2883 2884 return err; 2885 } 2886 2887 static int btusb_mtk_uhw_reg_read(struct btusb_data *data, u32 reg, u32 *val) 2888 { 2889 struct hci_dev *hdev = data->hdev; 2890 int pipe, err; 2891 void *buf; 2892 2893 buf = kzalloc(4, GFP_KERNEL); 2894 if (!buf) 2895 return -ENOMEM; 2896 2897 pipe = usb_rcvctrlpipe(data->udev, 0); 2898 err = usb_control_msg(data->udev, pipe, 0x01, 2899 0xDE, 2900 reg >> 16, reg & 0xffff, 2901 buf, 4, USB_CTRL_SET_TIMEOUT); 2902 if (err < 0) { 2903 bt_dev_err(hdev, "Failed to read uhw reg(%d)", err); 2904 goto err_free_buf; 2905 } 2906 2907 *val = get_unaligned_le32(buf); 2908 bt_dev_dbg(hdev, "reg=%x, value=0x%08x", reg, *val); 2909 2910 err_free_buf: 2911 kfree(buf); 2912 2913 return err; 2914 } 2915 2916 static int btusb_mtk_reg_read(struct btusb_data *data, u32 reg, u32 *val) 2917 { 2918 int pipe, err, size = sizeof(u32); 2919 void *buf; 2920 2921 buf = kzalloc(size, GFP_KERNEL); 2922 if (!buf) 2923 return -ENOMEM; 2924 2925 pipe = usb_rcvctrlpipe(data->udev, 0); 2926 err = usb_control_msg(data->udev, pipe, 0x63, 2927 USB_TYPE_VENDOR | USB_DIR_IN, 2928 reg >> 16, reg & 0xffff, 2929 buf, size, USB_CTRL_SET_TIMEOUT); 2930 if (err < 0) 2931 goto err_free_buf; 2932 2933 *val = get_unaligned_le32(buf); 2934 2935 err_free_buf: 2936 kfree(buf); 2937 2938 return err; 2939 } 2940 2941 static int btusb_mtk_id_get(struct btusb_data *data, u32 reg, u32 *id) 2942 { 2943 return btusb_mtk_reg_read(data, reg, id); 2944 } 2945 2946 static int btusb_mtk_setup(struct hci_dev *hdev) 2947 { 2948 struct btusb_data *data = hci_get_drvdata(hdev); 2949 struct btmtk_hci_wmt_params wmt_params; 2950 ktime_t calltime, delta, rettime; 2951 struct btmtk_tci_sleep tci_sleep; 2952 unsigned long long duration; 2953 struct sk_buff *skb; 2954 const char *fwname; 2955 int err, status; 2956 u32 dev_id; 2957 char fw_bin_name[64]; 2958 u32 fw_version = 0; 2959 u8 param; 2960 2961 calltime = ktime_get(); 2962 2963 err = btusb_mtk_id_get(data, 0x80000008, &dev_id); 2964 if (err < 0) { 2965 bt_dev_err(hdev, "Failed to get device id (%d)", err); 2966 return err; 2967 } 2968 2969 if (!dev_id) { 2970 err = btusb_mtk_id_get(data, 0x70010200, &dev_id); 2971 if (err < 0) { 2972 bt_dev_err(hdev, "Failed to get device id (%d)", err); 2973 return err; 2974 } 2975 err = btusb_mtk_id_get(data, 0x80021004, &fw_version); 2976 if (err < 0) { 2977 bt_dev_err(hdev, "Failed to get fw version (%d)", err); 2978 return err; 2979 } 2980 } 2981 2982 switch (dev_id) { 2983 case 0x7663: 2984 fwname = FIRMWARE_MT7663; 2985 break; 2986 case 0x7668: 2987 fwname = FIRMWARE_MT7668; 2988 break; 2989 case 0x7922: 2990 case 0x7961: 2991 snprintf(fw_bin_name, sizeof(fw_bin_name), 2992 "mediatek/BT_RAM_CODE_MT%04x_1_%x_hdr.bin", 2993 dev_id & 0xffff, (fw_version & 0xff) + 1); 2994 err = btmtk_setup_firmware_79xx(hdev, fw_bin_name, 2995 btusb_mtk_hci_wmt_sync); 2996 if (err < 0) { 2997 bt_dev_err(hdev, "Failed to set up firmware (%d)", err); 2998 return err; 2999 } 3000 3001 /* It's Device EndPoint Reset Option Register */ 3002 btusb_mtk_uhw_reg_write(data, MTK_EP_RST_OPT, MTK_EP_RST_IN_OUT_OPT); 3003 3004 /* Enable Bluetooth protocol */ 3005 param = 1; 3006 wmt_params.op = BTMTK_WMT_FUNC_CTRL; 3007 wmt_params.flag = 0; 3008 wmt_params.dlen = sizeof(param); 3009 wmt_params.data = ¶m; 3010 wmt_params.status = NULL; 3011 3012 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params); 3013 if (err < 0) { 3014 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err); 3015 return err; 3016 } 3017 3018 hci_set_msft_opcode(hdev, 0xFD30); 3019 hci_set_aosp_capable(hdev); 3020 goto done; 3021 default: 3022 bt_dev_err(hdev, "Unsupported hardware variant (%08x)", 3023 dev_id); 3024 return -ENODEV; 3025 } 3026 3027 /* Query whether the firmware is already download */ 3028 wmt_params.op = BTMTK_WMT_SEMAPHORE; 3029 wmt_params.flag = 1; 3030 wmt_params.dlen = 0; 3031 wmt_params.data = NULL; 3032 wmt_params.status = &status; 3033 3034 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params); 3035 if (err < 0) { 3036 bt_dev_err(hdev, "Failed to query firmware status (%d)", err); 3037 return err; 3038 } 3039 3040 if (status == BTMTK_WMT_PATCH_DONE) { 3041 bt_dev_info(hdev, "firmware already downloaded"); 3042 goto ignore_setup_fw; 3043 } 3044 3045 /* Setup a firmware which the device definitely requires */ 3046 err = btmtk_setup_firmware(hdev, fwname, 3047 btusb_mtk_hci_wmt_sync); 3048 if (err < 0) 3049 return err; 3050 3051 ignore_setup_fw: 3052 err = readx_poll_timeout(btusb_mtk_func_query, hdev, status, 3053 status < 0 || status != BTMTK_WMT_ON_PROGRESS, 3054 2000, 5000000); 3055 /* -ETIMEDOUT happens */ 3056 if (err < 0) 3057 return err; 3058 3059 /* The other errors happen in btusb_mtk_func_query */ 3060 if (status < 0) 3061 return status; 3062 3063 if (status == BTMTK_WMT_ON_DONE) { 3064 bt_dev_info(hdev, "function already on"); 3065 goto ignore_func_on; 3066 } 3067 3068 /* Enable Bluetooth protocol */ 3069 param = 1; 3070 wmt_params.op = BTMTK_WMT_FUNC_CTRL; 3071 wmt_params.flag = 0; 3072 wmt_params.dlen = sizeof(param); 3073 wmt_params.data = ¶m; 3074 wmt_params.status = NULL; 3075 3076 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params); 3077 if (err < 0) { 3078 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err); 3079 return err; 3080 } 3081 3082 ignore_func_on: 3083 /* Apply the low power environment setup */ 3084 tci_sleep.mode = 0x5; 3085 tci_sleep.duration = cpu_to_le16(0x640); 3086 tci_sleep.host_duration = cpu_to_le16(0x640); 3087 tci_sleep.host_wakeup_pin = 0; 3088 tci_sleep.time_compensation = 0; 3089 3090 skb = __hci_cmd_sync(hdev, 0xfc7a, sizeof(tci_sleep), &tci_sleep, 3091 HCI_INIT_TIMEOUT); 3092 if (IS_ERR(skb)) { 3093 err = PTR_ERR(skb); 3094 bt_dev_err(hdev, "Failed to apply low power setting (%d)", err); 3095 return err; 3096 } 3097 kfree_skb(skb); 3098 3099 done: 3100 rettime = ktime_get(); 3101 delta = ktime_sub(rettime, calltime); 3102 duration = (unsigned long long)ktime_to_ns(delta) >> 10; 3103 3104 bt_dev_info(hdev, "Device setup in %llu usecs", duration); 3105 3106 return 0; 3107 } 3108 3109 static int btusb_mtk_shutdown(struct hci_dev *hdev) 3110 { 3111 struct btmtk_hci_wmt_params wmt_params; 3112 u8 param = 0; 3113 int err; 3114 3115 /* Disable the device */ 3116 wmt_params.op = BTMTK_WMT_FUNC_CTRL; 3117 wmt_params.flag = 0; 3118 wmt_params.dlen = sizeof(param); 3119 wmt_params.data = ¶m; 3120 wmt_params.status = NULL; 3121 3122 err = btusb_mtk_hci_wmt_sync(hdev, &wmt_params); 3123 if (err < 0) { 3124 bt_dev_err(hdev, "Failed to send wmt func ctrl (%d)", err); 3125 return err; 3126 } 3127 3128 return 0; 3129 } 3130 3131 static void btusb_mtk_cmd_timeout(struct hci_dev *hdev) 3132 { 3133 struct btusb_data *data = hci_get_drvdata(hdev); 3134 u32 val; 3135 int err, retry = 0; 3136 3137 /* It's MediaTek specific bluetooth reset mechanism via USB */ 3138 if (test_and_set_bit(BTUSB_HW_RESET_ACTIVE, &data->flags)) { 3139 bt_dev_err(hdev, "last reset failed? Not resetting again"); 3140 return; 3141 } 3142 3143 err = usb_autopm_get_interface(data->intf); 3144 if (err < 0) 3145 return; 3146 3147 btusb_stop_traffic(data); 3148 usb_kill_anchored_urbs(&data->tx_anchor); 3149 3150 /* It's Device EndPoint Reset Option Register */ 3151 bt_dev_dbg(hdev, "Initiating reset mechanism via uhw"); 3152 btusb_mtk_uhw_reg_write(data, MTK_EP_RST_OPT, MTK_EP_RST_IN_OUT_OPT); 3153 btusb_mtk_uhw_reg_read(data, MTK_BT_WDT_STATUS, &val); 3154 3155 /* Reset the bluetooth chip via USB interface. */ 3156 btusb_mtk_uhw_reg_write(data, MTK_BT_SUBSYS_RST, 1); 3157 btusb_mtk_uhw_reg_write(data, MTK_UDMA_INT_STA_BT, 0x000000FF); 3158 btusb_mtk_uhw_reg_read(data, MTK_UDMA_INT_STA_BT, &val); 3159 btusb_mtk_uhw_reg_write(data, MTK_UDMA_INT_STA_BT1, 0x000000FF); 3160 btusb_mtk_uhw_reg_read(data, MTK_UDMA_INT_STA_BT1, &val); 3161 /* MT7921 need to delay 20ms between toggle reset bit */ 3162 msleep(20); 3163 btusb_mtk_uhw_reg_write(data, MTK_BT_SUBSYS_RST, 0); 3164 btusb_mtk_uhw_reg_read(data, MTK_BT_SUBSYS_RST, &val); 3165 3166 /* Poll the register until reset is completed */ 3167 do { 3168 btusb_mtk_uhw_reg_read(data, MTK_BT_MISC, &val); 3169 if (val & MTK_BT_RST_DONE) { 3170 bt_dev_dbg(hdev, "Bluetooth Reset Successfully"); 3171 break; 3172 } 3173 3174 bt_dev_dbg(hdev, "Polling Bluetooth Reset CR"); 3175 retry++; 3176 msleep(MTK_BT_RESET_WAIT_MS); 3177 } while (retry < MTK_BT_RESET_NUM_TRIES); 3178 3179 btusb_mtk_id_get(data, 0x70010200, &val); 3180 if (!val) 3181 bt_dev_err(hdev, "Can't get device id, subsys reset fail."); 3182 3183 usb_queue_reset_device(data->intf); 3184 3185 clear_bit(BTUSB_HW_RESET_ACTIVE, &data->flags); 3186 } 3187 3188 static int btusb_recv_acl_mtk(struct hci_dev *hdev, struct sk_buff *skb) 3189 { 3190 struct btusb_data *data = hci_get_drvdata(hdev); 3191 u16 handle = le16_to_cpu(hci_acl_hdr(skb)->handle); 3192 3193 switch (handle) { 3194 case 0xfc6f: /* Firmware dump from device */ 3195 /* When the firmware hangs, the device can no longer 3196 * suspend and thus disable auto-suspend. 3197 */ 3198 usb_disable_autosuspend(data->udev); 3199 fallthrough; 3200 case 0x05ff: /* Firmware debug logging 1 */ 3201 case 0x05fe: /* Firmware debug logging 2 */ 3202 return hci_recv_diag(hdev, skb); 3203 } 3204 3205 return hci_recv_frame(hdev, skb); 3206 } 3207 3208 #ifdef CONFIG_PM 3209 /* Configure an out-of-band gpio as wake-up pin, if specified in device tree */ 3210 static int marvell_config_oob_wake(struct hci_dev *hdev) 3211 { 3212 struct sk_buff *skb; 3213 struct btusb_data *data = hci_get_drvdata(hdev); 3214 struct device *dev = &data->udev->dev; 3215 u16 pin, gap, opcode; 3216 int ret; 3217 u8 cmd[5]; 3218 3219 /* Move on if no wakeup pin specified */ 3220 if (of_property_read_u16(dev->of_node, "marvell,wakeup-pin", &pin) || 3221 of_property_read_u16(dev->of_node, "marvell,wakeup-gap-ms", &gap)) 3222 return 0; 3223 3224 /* Vendor specific command to configure a GPIO as wake-up pin */ 3225 opcode = hci_opcode_pack(0x3F, 0x59); 3226 cmd[0] = opcode & 0xFF; 3227 cmd[1] = opcode >> 8; 3228 cmd[2] = 2; /* length of parameters that follow */ 3229 cmd[3] = pin; 3230 cmd[4] = gap; /* time in ms, for which wakeup pin should be asserted */ 3231 3232 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL); 3233 if (!skb) { 3234 bt_dev_err(hdev, "%s: No memory", __func__); 3235 return -ENOMEM; 3236 } 3237 3238 skb_put_data(skb, cmd, sizeof(cmd)); 3239 hci_skb_pkt_type(skb) = HCI_COMMAND_PKT; 3240 3241 ret = btusb_send_frame(hdev, skb); 3242 if (ret) { 3243 bt_dev_err(hdev, "%s: configuration failed", __func__); 3244 kfree_skb(skb); 3245 return ret; 3246 } 3247 3248 return 0; 3249 } 3250 #endif 3251 3252 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev, 3253 const bdaddr_t *bdaddr) 3254 { 3255 struct sk_buff *skb; 3256 u8 buf[8]; 3257 long ret; 3258 3259 buf[0] = 0xfe; 3260 buf[1] = sizeof(bdaddr_t); 3261 memcpy(buf + 2, bdaddr, sizeof(bdaddr_t)); 3262 3263 skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT); 3264 if (IS_ERR(skb)) { 3265 ret = PTR_ERR(skb); 3266 bt_dev_err(hdev, "changing Marvell device address failed (%ld)", 3267 ret); 3268 return ret; 3269 } 3270 kfree_skb(skb); 3271 3272 return 0; 3273 } 3274 3275 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev, 3276 const bdaddr_t *bdaddr) 3277 { 3278 struct sk_buff *skb; 3279 u8 buf[10]; 3280 long ret; 3281 3282 buf[0] = 0x01; 3283 buf[1] = 0x01; 3284 buf[2] = 0x00; 3285 buf[3] = sizeof(bdaddr_t); 3286 memcpy(buf + 4, bdaddr, sizeof(bdaddr_t)); 3287 3288 skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT); 3289 if (IS_ERR(skb)) { 3290 ret = PTR_ERR(skb); 3291 bt_dev_err(hdev, "Change address command failed (%ld)", ret); 3292 return ret; 3293 } 3294 kfree_skb(skb); 3295 3296 return 0; 3297 } 3298 3299 static int btusb_set_bdaddr_wcn6855(struct hci_dev *hdev, 3300 const bdaddr_t *bdaddr) 3301 { 3302 struct sk_buff *skb; 3303 u8 buf[6]; 3304 long ret; 3305 3306 memcpy(buf, bdaddr, sizeof(bdaddr_t)); 3307 3308 skb = __hci_cmd_sync_ev(hdev, 0xfc14, sizeof(buf), buf, 3309 HCI_EV_CMD_COMPLETE, HCI_INIT_TIMEOUT); 3310 if (IS_ERR(skb)) { 3311 ret = PTR_ERR(skb); 3312 bt_dev_err(hdev, "Change address command failed (%ld)", ret); 3313 return ret; 3314 } 3315 kfree_skb(skb); 3316 3317 return 0; 3318 } 3319 3320 #define QCA_MEMDUMP_ACL_HANDLE 0x2EDD 3321 #define QCA_MEMDUMP_SIZE_MAX 0x100000 3322 #define QCA_MEMDUMP_VSE_CLASS 0x01 3323 #define QCA_MEMDUMP_MSG_TYPE 0x08 3324 #define QCA_MEMDUMP_PKT_SIZE 248 3325 #define QCA_LAST_SEQUENCE_NUM 0xffff 3326 3327 struct qca_dump_hdr { 3328 u8 vse_class; 3329 u8 msg_type; 3330 __le16 seqno; 3331 u8 reserved; 3332 union { 3333 u8 data[0]; 3334 struct { 3335 __le32 ram_dump_size; 3336 u8 data0[0]; 3337 } __packed; 3338 }; 3339 } __packed; 3340 3341 3342 static void btusb_dump_hdr_qca(struct hci_dev *hdev, struct sk_buff *skb) 3343 { 3344 char buf[128]; 3345 struct btusb_data *btdata = hci_get_drvdata(hdev); 3346 3347 snprintf(buf, sizeof(buf), "Controller Name: 0x%x\n", 3348 btdata->qca_dump.controller_id); 3349 skb_put_data(skb, buf, strlen(buf)); 3350 3351 snprintf(buf, sizeof(buf), "Firmware Version: 0x%x\n", 3352 btdata->qca_dump.fw_version); 3353 skb_put_data(skb, buf, strlen(buf)); 3354 3355 snprintf(buf, sizeof(buf), "Driver: %s\nVendor: qca\n", 3356 btusb_driver.name); 3357 skb_put_data(skb, buf, strlen(buf)); 3358 3359 snprintf(buf, sizeof(buf), "VID: 0x%x\nPID:0x%x\n", 3360 btdata->qca_dump.id_vendor, btdata->qca_dump.id_product); 3361 skb_put_data(skb, buf, strlen(buf)); 3362 3363 snprintf(buf, sizeof(buf), "Lmp Subversion: 0x%x\n", 3364 hdev->lmp_subver); 3365 skb_put_data(skb, buf, strlen(buf)); 3366 } 3367 3368 static void btusb_coredump_qca(struct hci_dev *hdev) 3369 { 3370 static const u8 param[] = { 0x26 }; 3371 struct sk_buff *skb; 3372 3373 skb = __hci_cmd_sync(hdev, 0xfc0c, 1, param, HCI_CMD_TIMEOUT); 3374 if (IS_ERR(skb)) 3375 bt_dev_err(hdev, "%s: triggle crash failed (%ld)", __func__, PTR_ERR(skb)); 3376 kfree_skb(skb); 3377 } 3378 3379 /* 3380 * ==0: not a dump pkt. 3381 * < 0: fails to handle a dump pkt 3382 * > 0: otherwise. 3383 */ 3384 static int handle_dump_pkt_qca(struct hci_dev *hdev, struct sk_buff *skb) 3385 { 3386 int ret = 1; 3387 u8 pkt_type; 3388 u8 *sk_ptr; 3389 unsigned int sk_len; 3390 u16 seqno; 3391 u32 dump_size; 3392 3393 struct hci_event_hdr *event_hdr; 3394 struct hci_acl_hdr *acl_hdr; 3395 struct qca_dump_hdr *dump_hdr; 3396 struct btusb_data *btdata = hci_get_drvdata(hdev); 3397 struct usb_device *udev = btdata->udev; 3398 3399 pkt_type = hci_skb_pkt_type(skb); 3400 sk_ptr = skb->data; 3401 sk_len = skb->len; 3402 3403 if (pkt_type == HCI_ACLDATA_PKT) { 3404 acl_hdr = hci_acl_hdr(skb); 3405 if (le16_to_cpu(acl_hdr->handle) != QCA_MEMDUMP_ACL_HANDLE) 3406 return 0; 3407 sk_ptr += HCI_ACL_HDR_SIZE; 3408 sk_len -= HCI_ACL_HDR_SIZE; 3409 event_hdr = (struct hci_event_hdr *)sk_ptr; 3410 } else { 3411 event_hdr = hci_event_hdr(skb); 3412 } 3413 3414 if ((event_hdr->evt != HCI_VENDOR_PKT) 3415 || (event_hdr->plen != (sk_len - HCI_EVENT_HDR_SIZE))) 3416 return 0; 3417 3418 sk_ptr += HCI_EVENT_HDR_SIZE; 3419 sk_len -= HCI_EVENT_HDR_SIZE; 3420 3421 dump_hdr = (struct qca_dump_hdr *)sk_ptr; 3422 if ((sk_len < offsetof(struct qca_dump_hdr, data)) 3423 || (dump_hdr->vse_class != QCA_MEMDUMP_VSE_CLASS) 3424 || (dump_hdr->msg_type != QCA_MEMDUMP_MSG_TYPE)) 3425 return 0; 3426 3427 /*it is dump pkt now*/ 3428 seqno = le16_to_cpu(dump_hdr->seqno); 3429 if (seqno == 0) { 3430 set_bit(BTUSB_HW_SSR_ACTIVE, &btdata->flags); 3431 dump_size = le32_to_cpu(dump_hdr->ram_dump_size); 3432 if (!dump_size || (dump_size > QCA_MEMDUMP_SIZE_MAX)) { 3433 ret = -EILSEQ; 3434 bt_dev_err(hdev, "Invalid memdump size(%u)", 3435 dump_size); 3436 goto out; 3437 } 3438 3439 ret = hci_devcd_init(hdev, dump_size); 3440 if (ret < 0) { 3441 bt_dev_err(hdev, "memdump init error(%d)", ret); 3442 goto out; 3443 } 3444 3445 btdata->qca_dump.ram_dump_size = dump_size; 3446 btdata->qca_dump.ram_dump_seqno = 0; 3447 sk_ptr += offsetof(struct qca_dump_hdr, data0); 3448 sk_len -= offsetof(struct qca_dump_hdr, data0); 3449 3450 usb_disable_autosuspend(udev); 3451 bt_dev_info(hdev, "%s memdump size(%u)\n", 3452 (pkt_type == HCI_ACLDATA_PKT) ? "ACL" : "event", 3453 dump_size); 3454 } else { 3455 sk_ptr += offsetof(struct qca_dump_hdr, data); 3456 sk_len -= offsetof(struct qca_dump_hdr, data); 3457 } 3458 3459 if (!btdata->qca_dump.ram_dump_size) { 3460 ret = -EINVAL; 3461 bt_dev_err(hdev, "memdump is not active"); 3462 goto out; 3463 } 3464 3465 if ((seqno > btdata->qca_dump.ram_dump_seqno + 1) && (seqno != QCA_LAST_SEQUENCE_NUM)) { 3466 dump_size = QCA_MEMDUMP_PKT_SIZE * (seqno - btdata->qca_dump.ram_dump_seqno - 1); 3467 hci_devcd_append_pattern(hdev, 0x0, dump_size); 3468 bt_dev_err(hdev, 3469 "expected memdump seqno(%u) is not received(%u)\n", 3470 btdata->qca_dump.ram_dump_seqno, seqno); 3471 btdata->qca_dump.ram_dump_seqno = seqno; 3472 kfree_skb(skb); 3473 return ret; 3474 } 3475 3476 skb_pull(skb, skb->len - sk_len); 3477 hci_devcd_append(hdev, skb); 3478 btdata->qca_dump.ram_dump_seqno++; 3479 if (seqno == QCA_LAST_SEQUENCE_NUM) { 3480 bt_dev_info(hdev, 3481 "memdump done: pkts(%u), total(%u)\n", 3482 btdata->qca_dump.ram_dump_seqno, btdata->qca_dump.ram_dump_size); 3483 3484 hci_devcd_complete(hdev); 3485 goto out; 3486 } 3487 return ret; 3488 3489 out: 3490 if (btdata->qca_dump.ram_dump_size) 3491 usb_enable_autosuspend(udev); 3492 btdata->qca_dump.ram_dump_size = 0; 3493 btdata->qca_dump.ram_dump_seqno = 0; 3494 clear_bit(BTUSB_HW_SSR_ACTIVE, &btdata->flags); 3495 3496 if (ret < 0) 3497 kfree_skb(skb); 3498 return ret; 3499 } 3500 3501 static int btusb_recv_acl_qca(struct hci_dev *hdev, struct sk_buff *skb) 3502 { 3503 if (handle_dump_pkt_qca(hdev, skb)) 3504 return 0; 3505 return hci_recv_frame(hdev, skb); 3506 } 3507 3508 static int btusb_recv_evt_qca(struct hci_dev *hdev, struct sk_buff *skb) 3509 { 3510 if (handle_dump_pkt_qca(hdev, skb)) 3511 return 0; 3512 return hci_recv_frame(hdev, skb); 3513 } 3514 3515 3516 #define QCA_DFU_PACKET_LEN 4096 3517 3518 #define QCA_GET_TARGET_VERSION 0x09 3519 #define QCA_CHECK_STATUS 0x05 3520 #define QCA_DFU_DOWNLOAD 0x01 3521 3522 #define QCA_SYSCFG_UPDATED 0x40 3523 #define QCA_PATCH_UPDATED 0x80 3524 #define QCA_DFU_TIMEOUT 3000 3525 #define QCA_FLAG_MULTI_NVM 0x80 3526 #define QCA_BT_RESET_WAIT_MS 100 3527 3528 #define WCN6855_2_0_RAM_VERSION_GF 0x400c1200 3529 #define WCN6855_2_1_RAM_VERSION_GF 0x400c1211 3530 3531 struct qca_version { 3532 __le32 rom_version; 3533 __le32 patch_version; 3534 __le32 ram_version; 3535 __u8 chip_id; 3536 __u8 platform_id; 3537 __le16 flag; 3538 __u8 reserved[4]; 3539 } __packed; 3540 3541 struct qca_rampatch_version { 3542 __le16 rom_version_high; 3543 __le16 rom_version_low; 3544 __le16 patch_version; 3545 } __packed; 3546 3547 struct qca_device_info { 3548 u32 rom_version; 3549 u8 rampatch_hdr; /* length of header in rampatch */ 3550 u8 nvm_hdr; /* length of header in NVM */ 3551 u8 ver_offset; /* offset of version structure in rampatch */ 3552 }; 3553 3554 static const struct qca_device_info qca_devices_table[] = { 3555 { 0x00000100, 20, 4, 8 }, /* Rome 1.0 */ 3556 { 0x00000101, 20, 4, 8 }, /* Rome 1.1 */ 3557 { 0x00000200, 28, 4, 16 }, /* Rome 2.0 */ 3558 { 0x00000201, 28, 4, 16 }, /* Rome 2.1 */ 3559 { 0x00000300, 28, 4, 16 }, /* Rome 3.0 */ 3560 { 0x00000302, 28, 4, 16 }, /* Rome 3.2 */ 3561 { 0x00130100, 40, 4, 16 }, /* WCN6855 1.0 */ 3562 { 0x00130200, 40, 4, 16 }, /* WCN6855 2.0 */ 3563 { 0x00130201, 40, 4, 16 }, /* WCN6855 2.1 */ 3564 { 0x00190200, 40, 4, 16 }, /* WCN785x 2.0 */ 3565 }; 3566 3567 static int btusb_qca_send_vendor_req(struct usb_device *udev, u8 request, 3568 void *data, u16 size) 3569 { 3570 int pipe, err; 3571 u8 *buf; 3572 3573 buf = kmalloc(size, GFP_KERNEL); 3574 if (!buf) 3575 return -ENOMEM; 3576 3577 /* Found some of USB hosts have IOT issues with ours so that we should 3578 * not wait until HCI layer is ready. 3579 */ 3580 pipe = usb_rcvctrlpipe(udev, 0); 3581 err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN, 3582 0, 0, buf, size, USB_CTRL_SET_TIMEOUT); 3583 if (err < 0) { 3584 dev_err(&udev->dev, "Failed to access otp area (%d)", err); 3585 goto done; 3586 } 3587 3588 memcpy(data, buf, size); 3589 3590 done: 3591 kfree(buf); 3592 3593 return err; 3594 } 3595 3596 static int btusb_setup_qca_download_fw(struct hci_dev *hdev, 3597 const struct firmware *firmware, 3598 size_t hdr_size) 3599 { 3600 struct btusb_data *btdata = hci_get_drvdata(hdev); 3601 struct usb_device *udev = btdata->udev; 3602 size_t count, size, sent = 0; 3603 int pipe, len, err; 3604 u8 *buf; 3605 3606 buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL); 3607 if (!buf) 3608 return -ENOMEM; 3609 3610 count = firmware->size; 3611 3612 size = min_t(size_t, count, hdr_size); 3613 memcpy(buf, firmware->data, size); 3614 3615 /* USB patches should go down to controller through USB path 3616 * because binary format fits to go down through USB channel. 3617 * USB control path is for patching headers and USB bulk is for 3618 * patch body. 3619 */ 3620 pipe = usb_sndctrlpipe(udev, 0); 3621 err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR, 3622 0, 0, buf, size, USB_CTRL_SET_TIMEOUT); 3623 if (err < 0) { 3624 bt_dev_err(hdev, "Failed to send headers (%d)", err); 3625 goto done; 3626 } 3627 3628 sent += size; 3629 count -= size; 3630 3631 /* ep2 need time to switch from function acl to function dfu, 3632 * so we add 20ms delay here. 3633 */ 3634 msleep(20); 3635 3636 while (count) { 3637 size = min_t(size_t, count, QCA_DFU_PACKET_LEN); 3638 3639 memcpy(buf, firmware->data + sent, size); 3640 3641 pipe = usb_sndbulkpipe(udev, 0x02); 3642 err = usb_bulk_msg(udev, pipe, buf, size, &len, 3643 QCA_DFU_TIMEOUT); 3644 if (err < 0) { 3645 bt_dev_err(hdev, "Failed to send body at %zd of %zd (%d)", 3646 sent, firmware->size, err); 3647 break; 3648 } 3649 3650 if (size != len) { 3651 bt_dev_err(hdev, "Failed to get bulk buffer"); 3652 err = -EILSEQ; 3653 break; 3654 } 3655 3656 sent += size; 3657 count -= size; 3658 } 3659 3660 done: 3661 kfree(buf); 3662 return err; 3663 } 3664 3665 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev, 3666 struct qca_version *ver, 3667 const struct qca_device_info *info) 3668 { 3669 struct qca_rampatch_version *rver; 3670 const struct firmware *fw; 3671 u32 ver_rom, ver_patch, rver_rom; 3672 u16 rver_rom_low, rver_rom_high, rver_patch; 3673 char fwname[64]; 3674 int err; 3675 3676 ver_rom = le32_to_cpu(ver->rom_version); 3677 ver_patch = le32_to_cpu(ver->patch_version); 3678 3679 snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom); 3680 3681 err = request_firmware(&fw, fwname, &hdev->dev); 3682 if (err) { 3683 bt_dev_err(hdev, "failed to request rampatch file: %s (%d)", 3684 fwname, err); 3685 return err; 3686 } 3687 3688 bt_dev_info(hdev, "using rampatch file: %s", fwname); 3689 3690 rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset); 3691 rver_rom_low = le16_to_cpu(rver->rom_version_low); 3692 rver_patch = le16_to_cpu(rver->patch_version); 3693 3694 if (ver_rom & ~0xffffU) { 3695 rver_rom_high = le16_to_cpu(rver->rom_version_high); 3696 rver_rom = rver_rom_high << 16 | rver_rom_low; 3697 } else { 3698 rver_rom = rver_rom_low; 3699 } 3700 3701 bt_dev_info(hdev, "QCA: patch rome 0x%x build 0x%x, " 3702 "firmware rome 0x%x build 0x%x", 3703 rver_rom, rver_patch, ver_rom, ver_patch); 3704 3705 if (rver_rom != ver_rom || rver_patch <= ver_patch) { 3706 bt_dev_err(hdev, "rampatch file version did not match with firmware"); 3707 err = -EINVAL; 3708 goto done; 3709 } 3710 3711 err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr); 3712 3713 done: 3714 release_firmware(fw); 3715 3716 return err; 3717 } 3718 3719 static void btusb_generate_qca_nvm_name(char *fwname, size_t max_size, 3720 const struct qca_version *ver) 3721 { 3722 u32 rom_version = le32_to_cpu(ver->rom_version); 3723 u16 flag = le16_to_cpu(ver->flag); 3724 3725 if (((flag >> 8) & 0xff) == QCA_FLAG_MULTI_NVM) { 3726 /* The board_id should be split into two bytes 3727 * The 1st byte is chip ID, and the 2nd byte is platform ID 3728 * For example, board ID 0x010A, 0x01 is platform ID. 0x0A is chip ID 3729 * we have several platforms, and platform IDs are continuously added 3730 * Platform ID: 3731 * 0x00 is for Mobile 3732 * 0x01 is for X86 3733 * 0x02 is for Automotive 3734 * 0x03 is for Consumer electronic 3735 */ 3736 u16 board_id = (ver->chip_id << 8) + ver->platform_id; 3737 const char *variant; 3738 3739 switch (le32_to_cpu(ver->ram_version)) { 3740 case WCN6855_2_0_RAM_VERSION_GF: 3741 case WCN6855_2_1_RAM_VERSION_GF: 3742 variant = "_gf"; 3743 break; 3744 default: 3745 variant = ""; 3746 break; 3747 } 3748 3749 if (board_id == 0) { 3750 snprintf(fwname, max_size, "qca/nvm_usb_%08x%s.bin", 3751 rom_version, variant); 3752 } else { 3753 snprintf(fwname, max_size, "qca/nvm_usb_%08x%s_%04x.bin", 3754 rom_version, variant, board_id); 3755 } 3756 } else { 3757 snprintf(fwname, max_size, "qca/nvm_usb_%08x.bin", 3758 rom_version); 3759 } 3760 3761 } 3762 3763 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev, 3764 struct qca_version *ver, 3765 const struct qca_device_info *info) 3766 { 3767 const struct firmware *fw; 3768 char fwname[64]; 3769 int err; 3770 3771 btusb_generate_qca_nvm_name(fwname, sizeof(fwname), ver); 3772 3773 err = request_firmware(&fw, fwname, &hdev->dev); 3774 if (err) { 3775 bt_dev_err(hdev, "failed to request NVM file: %s (%d)", 3776 fwname, err); 3777 return err; 3778 } 3779 3780 bt_dev_info(hdev, "using NVM file: %s", fwname); 3781 3782 err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr); 3783 3784 release_firmware(fw); 3785 3786 return err; 3787 } 3788 3789 /* identify the ROM version and check whether patches are needed */ 3790 static bool btusb_qca_need_patch(struct usb_device *udev) 3791 { 3792 struct qca_version ver; 3793 3794 if (btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver, 3795 sizeof(ver)) < 0) 3796 return false; 3797 /* only low ROM versions need patches */ 3798 return !(le32_to_cpu(ver.rom_version) & ~0xffffU); 3799 } 3800 3801 static int btusb_setup_qca(struct hci_dev *hdev) 3802 { 3803 struct btusb_data *btdata = hci_get_drvdata(hdev); 3804 struct usb_device *udev = btdata->udev; 3805 const struct qca_device_info *info = NULL; 3806 struct qca_version ver; 3807 u32 ver_rom; 3808 u8 status; 3809 int i, err; 3810 3811 err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver, 3812 sizeof(ver)); 3813 if (err < 0) 3814 return err; 3815 3816 ver_rom = le32_to_cpu(ver.rom_version); 3817 3818 for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) { 3819 if (ver_rom == qca_devices_table[i].rom_version) 3820 info = &qca_devices_table[i]; 3821 } 3822 if (!info) { 3823 /* If the rom_version is not matched in the qca_devices_table 3824 * and the high ROM version is not zero, we assume this chip no 3825 * need to load the rampatch and nvm. 3826 */ 3827 if (ver_rom & ~0xffffU) 3828 return 0; 3829 3830 bt_dev_err(hdev, "don't support firmware rome 0x%x", ver_rom); 3831 return -ENODEV; 3832 } 3833 3834 err = btusb_qca_send_vendor_req(udev, QCA_CHECK_STATUS, &status, 3835 sizeof(status)); 3836 if (err < 0) 3837 return err; 3838 3839 if (!(status & QCA_PATCH_UPDATED)) { 3840 err = btusb_setup_qca_load_rampatch(hdev, &ver, info); 3841 if (err < 0) 3842 return err; 3843 } 3844 3845 err = btusb_qca_send_vendor_req(udev, QCA_GET_TARGET_VERSION, &ver, 3846 sizeof(ver)); 3847 if (err < 0) 3848 return err; 3849 3850 btdata->qca_dump.fw_version = le32_to_cpu(ver.patch_version); 3851 btdata->qca_dump.controller_id = le32_to_cpu(ver.rom_version); 3852 3853 if (!(status & QCA_SYSCFG_UPDATED)) { 3854 err = btusb_setup_qca_load_nvm(hdev, &ver, info); 3855 if (err < 0) 3856 return err; 3857 3858 /* WCN6855 2.1 and later will reset to apply firmware downloaded here, so 3859 * wait ~100ms for reset Done then go ahead, otherwise, it maybe 3860 * cause potential enable failure. 3861 */ 3862 if (info->rom_version >= 0x00130201) 3863 msleep(QCA_BT_RESET_WAIT_MS); 3864 } 3865 3866 /* Mark HCI_OP_ENHANCED_SETUP_SYNC_CONN as broken as it doesn't seem to 3867 * work with the likes of HSP/HFP mSBC. 3868 */ 3869 set_bit(HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN, &hdev->quirks); 3870 3871 return 0; 3872 } 3873 3874 static inline int __set_diag_interface(struct hci_dev *hdev) 3875 { 3876 struct btusb_data *data = hci_get_drvdata(hdev); 3877 struct usb_interface *intf = data->diag; 3878 int i; 3879 3880 if (!data->diag) 3881 return -ENODEV; 3882 3883 data->diag_tx_ep = NULL; 3884 data->diag_rx_ep = NULL; 3885 3886 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { 3887 struct usb_endpoint_descriptor *ep_desc; 3888 3889 ep_desc = &intf->cur_altsetting->endpoint[i].desc; 3890 3891 if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) { 3892 data->diag_tx_ep = ep_desc; 3893 continue; 3894 } 3895 3896 if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) { 3897 data->diag_rx_ep = ep_desc; 3898 continue; 3899 } 3900 } 3901 3902 if (!data->diag_tx_ep || !data->diag_rx_ep) { 3903 bt_dev_err(hdev, "invalid diagnostic descriptors"); 3904 return -ENODEV; 3905 } 3906 3907 return 0; 3908 } 3909 3910 static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable) 3911 { 3912 struct btusb_data *data = hci_get_drvdata(hdev); 3913 struct sk_buff *skb; 3914 struct urb *urb; 3915 unsigned int pipe; 3916 3917 if (!data->diag_tx_ep) 3918 return ERR_PTR(-ENODEV); 3919 3920 urb = usb_alloc_urb(0, GFP_KERNEL); 3921 if (!urb) 3922 return ERR_PTR(-ENOMEM); 3923 3924 skb = bt_skb_alloc(2, GFP_KERNEL); 3925 if (!skb) { 3926 usb_free_urb(urb); 3927 return ERR_PTR(-ENOMEM); 3928 } 3929 3930 skb_put_u8(skb, 0xf0); 3931 skb_put_u8(skb, enable); 3932 3933 pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress); 3934 3935 usb_fill_bulk_urb(urb, data->udev, pipe, 3936 skb->data, skb->len, btusb_tx_complete, skb); 3937 3938 skb->dev = (void *)hdev; 3939 3940 return urb; 3941 } 3942 3943 static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable) 3944 { 3945 struct btusb_data *data = hci_get_drvdata(hdev); 3946 struct urb *urb; 3947 3948 if (!data->diag) 3949 return -ENODEV; 3950 3951 if (!test_bit(HCI_RUNNING, &hdev->flags)) 3952 return -ENETDOWN; 3953 3954 urb = alloc_diag_urb(hdev, enable); 3955 if (IS_ERR(urb)) 3956 return PTR_ERR(urb); 3957 3958 return submit_or_queue_tx_urb(hdev, urb); 3959 } 3960 3961 #ifdef CONFIG_PM 3962 static irqreturn_t btusb_oob_wake_handler(int irq, void *priv) 3963 { 3964 struct btusb_data *data = priv; 3965 3966 pm_wakeup_event(&data->udev->dev, 0); 3967 pm_system_wakeup(); 3968 3969 /* Disable only if not already disabled (keep it balanced) */ 3970 if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) { 3971 disable_irq_nosync(irq); 3972 disable_irq_wake(irq); 3973 } 3974 return IRQ_HANDLED; 3975 } 3976 3977 static const struct of_device_id btusb_match_table[] = { 3978 { .compatible = "usb1286,204e" }, 3979 { .compatible = "usbcf3,e300" }, /* QCA6174A */ 3980 { .compatible = "usb4ca,301a" }, /* QCA6174A (Lite-On) */ 3981 { } 3982 }; 3983 MODULE_DEVICE_TABLE(of, btusb_match_table); 3984 3985 /* Use an oob wakeup pin? */ 3986 static int btusb_config_oob_wake(struct hci_dev *hdev) 3987 { 3988 struct btusb_data *data = hci_get_drvdata(hdev); 3989 struct device *dev = &data->udev->dev; 3990 int irq, ret; 3991 3992 clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags); 3993 3994 if (!of_match_device(btusb_match_table, dev)) 3995 return 0; 3996 3997 /* Move on if no IRQ specified */ 3998 irq = of_irq_get_byname(dev->of_node, "wakeup"); 3999 if (irq <= 0) { 4000 bt_dev_dbg(hdev, "%s: no OOB Wakeup IRQ in DT", __func__); 4001 return 0; 4002 } 4003 4004 irq_set_status_flags(irq, IRQ_NOAUTOEN); 4005 ret = devm_request_irq(&hdev->dev, irq, btusb_oob_wake_handler, 4006 0, "OOB Wake-on-BT", data); 4007 if (ret) { 4008 bt_dev_err(hdev, "%s: IRQ request failed", __func__); 4009 return ret; 4010 } 4011 4012 ret = device_init_wakeup(dev, true); 4013 if (ret) { 4014 bt_dev_err(hdev, "%s: failed to init_wakeup", __func__); 4015 return ret; 4016 } 4017 4018 data->oob_wake_irq = irq; 4019 bt_dev_info(hdev, "OOB Wake-on-BT configured at IRQ %u", irq); 4020 return 0; 4021 } 4022 #endif 4023 4024 static void btusb_check_needs_reset_resume(struct usb_interface *intf) 4025 { 4026 if (dmi_check_system(btusb_needs_reset_resume_table)) 4027 interface_to_usbdev(intf)->quirks |= USB_QUIRK_RESET_RESUME; 4028 } 4029 4030 static bool btusb_wakeup(struct hci_dev *hdev) 4031 { 4032 struct btusb_data *data = hci_get_drvdata(hdev); 4033 4034 return device_may_wakeup(&data->udev->dev); 4035 } 4036 4037 static int btusb_shutdown_qca(struct hci_dev *hdev) 4038 { 4039 struct sk_buff *skb; 4040 4041 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT); 4042 if (IS_ERR(skb)) { 4043 bt_dev_err(hdev, "HCI reset during shutdown failed"); 4044 return PTR_ERR(skb); 4045 } 4046 kfree_skb(skb); 4047 4048 return 0; 4049 } 4050 4051 static ssize_t force_poll_sync_read(struct file *file, char __user *user_buf, 4052 size_t count, loff_t *ppos) 4053 { 4054 struct btusb_data *data = file->private_data; 4055 char buf[3]; 4056 4057 buf[0] = data->poll_sync ? 'Y' : 'N'; 4058 buf[1] = '\n'; 4059 buf[2] = '\0'; 4060 return simple_read_from_buffer(user_buf, count, ppos, buf, 2); 4061 } 4062 4063 static ssize_t force_poll_sync_write(struct file *file, 4064 const char __user *user_buf, 4065 size_t count, loff_t *ppos) 4066 { 4067 struct btusb_data *data = file->private_data; 4068 bool enable; 4069 int err; 4070 4071 err = kstrtobool_from_user(user_buf, count, &enable); 4072 if (err) 4073 return err; 4074 4075 /* Only allow changes while the adapter is down */ 4076 if (test_bit(HCI_UP, &data->hdev->flags)) 4077 return -EPERM; 4078 4079 if (data->poll_sync == enable) 4080 return -EALREADY; 4081 4082 data->poll_sync = enable; 4083 4084 return count; 4085 } 4086 4087 static const struct file_operations force_poll_sync_fops = { 4088 .open = simple_open, 4089 .read = force_poll_sync_read, 4090 .write = force_poll_sync_write, 4091 .llseek = default_llseek, 4092 }; 4093 4094 static int btusb_probe(struct usb_interface *intf, 4095 const struct usb_device_id *id) 4096 { 4097 struct usb_endpoint_descriptor *ep_desc; 4098 struct gpio_desc *reset_gpio; 4099 struct btusb_data *data; 4100 struct hci_dev *hdev; 4101 unsigned ifnum_base; 4102 int i, err, priv_size; 4103 4104 BT_DBG("intf %p id %p", intf, id); 4105 4106 if ((id->driver_info & BTUSB_IFNUM_2) && 4107 (intf->cur_altsetting->desc.bInterfaceNumber != 0) && 4108 (intf->cur_altsetting->desc.bInterfaceNumber != 2)) 4109 return -ENODEV; 4110 4111 ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber; 4112 4113 if (!id->driver_info) { 4114 const struct usb_device_id *match; 4115 4116 match = usb_match_id(intf, blacklist_table); 4117 if (match) 4118 id = match; 4119 } 4120 4121 if (id->driver_info == BTUSB_IGNORE) 4122 return -ENODEV; 4123 4124 if (id->driver_info & BTUSB_ATH3012) { 4125 struct usb_device *udev = interface_to_usbdev(intf); 4126 4127 /* Old firmware would otherwise let ath3k driver load 4128 * patch and sysconfig files 4129 */ 4130 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001 && 4131 !btusb_qca_need_patch(udev)) 4132 return -ENODEV; 4133 } 4134 4135 data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL); 4136 if (!data) 4137 return -ENOMEM; 4138 4139 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { 4140 ep_desc = &intf->cur_altsetting->endpoint[i].desc; 4141 4142 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) { 4143 data->intr_ep = ep_desc; 4144 continue; 4145 } 4146 4147 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) { 4148 data->bulk_tx_ep = ep_desc; 4149 continue; 4150 } 4151 4152 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) { 4153 data->bulk_rx_ep = ep_desc; 4154 continue; 4155 } 4156 } 4157 4158 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) 4159 return -ENODEV; 4160 4161 if (id->driver_info & BTUSB_AMP) { 4162 data->cmdreq_type = USB_TYPE_CLASS | 0x01; 4163 data->cmdreq = 0x2b; 4164 } else { 4165 data->cmdreq_type = USB_TYPE_CLASS; 4166 data->cmdreq = 0x00; 4167 } 4168 4169 data->udev = interface_to_usbdev(intf); 4170 data->intf = intf; 4171 4172 INIT_WORK(&data->work, btusb_work); 4173 INIT_WORK(&data->waker, btusb_waker); 4174 INIT_DELAYED_WORK(&data->rx_work, btusb_rx_work); 4175 4176 skb_queue_head_init(&data->acl_q); 4177 4178 init_usb_anchor(&data->deferred); 4179 init_usb_anchor(&data->tx_anchor); 4180 spin_lock_init(&data->txlock); 4181 4182 init_usb_anchor(&data->intr_anchor); 4183 init_usb_anchor(&data->bulk_anchor); 4184 init_usb_anchor(&data->isoc_anchor); 4185 init_usb_anchor(&data->diag_anchor); 4186 init_usb_anchor(&data->ctrl_anchor); 4187 spin_lock_init(&data->rxlock); 4188 4189 priv_size = 0; 4190 4191 data->recv_event = hci_recv_frame; 4192 data->recv_bulk = btusb_recv_bulk; 4193 4194 if (id->driver_info & BTUSB_INTEL_COMBINED) { 4195 /* Allocate extra space for Intel device */ 4196 priv_size += sizeof(struct btintel_data); 4197 4198 /* Override the rx handlers */ 4199 data->recv_event = btusb_recv_event_intel; 4200 data->recv_bulk = btusb_recv_bulk_intel; 4201 } else if (id->driver_info & BTUSB_REALTEK) { 4202 /* Allocate extra space for Realtek device */ 4203 priv_size += sizeof(struct btrealtek_data); 4204 } 4205 4206 data->recv_acl = hci_recv_frame; 4207 4208 hdev = hci_alloc_dev_priv(priv_size); 4209 if (!hdev) 4210 return -ENOMEM; 4211 4212 hdev->bus = HCI_USB; 4213 hci_set_drvdata(hdev, data); 4214 4215 if (id->driver_info & BTUSB_AMP) 4216 hdev->dev_type = HCI_AMP; 4217 else 4218 hdev->dev_type = HCI_PRIMARY; 4219 4220 data->hdev = hdev; 4221 4222 SET_HCIDEV_DEV(hdev, &intf->dev); 4223 4224 reset_gpio = gpiod_get_optional(&data->udev->dev, "reset", 4225 GPIOD_OUT_LOW); 4226 if (IS_ERR(reset_gpio)) { 4227 err = PTR_ERR(reset_gpio); 4228 goto out_free_dev; 4229 } else if (reset_gpio) { 4230 data->reset_gpio = reset_gpio; 4231 } 4232 4233 hdev->open = btusb_open; 4234 hdev->close = btusb_close; 4235 hdev->flush = btusb_flush; 4236 hdev->send = btusb_send_frame; 4237 hdev->notify = btusb_notify; 4238 hdev->wakeup = btusb_wakeup; 4239 4240 #ifdef CONFIG_PM 4241 err = btusb_config_oob_wake(hdev); 4242 if (err) 4243 goto out_free_dev; 4244 4245 /* Marvell devices may need a specific chip configuration */ 4246 if (id->driver_info & BTUSB_MARVELL && data->oob_wake_irq) { 4247 err = marvell_config_oob_wake(hdev); 4248 if (err) 4249 goto out_free_dev; 4250 } 4251 #endif 4252 if (id->driver_info & BTUSB_CW6622) 4253 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks); 4254 4255 if (id->driver_info & BTUSB_BCM2045) 4256 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks); 4257 4258 if (id->driver_info & BTUSB_BCM92035) 4259 hdev->setup = btusb_setup_bcm92035; 4260 4261 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) && 4262 (id->driver_info & BTUSB_BCM_PATCHRAM)) { 4263 hdev->manufacturer = 15; 4264 hdev->setup = btbcm_setup_patchram; 4265 hdev->set_diag = btusb_bcm_set_diag; 4266 hdev->set_bdaddr = btbcm_set_bdaddr; 4267 4268 /* Broadcom LM_DIAG Interface numbers are hardcoded */ 4269 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2); 4270 } 4271 4272 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) && 4273 (id->driver_info & BTUSB_BCM_APPLE)) { 4274 hdev->manufacturer = 15; 4275 hdev->setup = btbcm_setup_apple; 4276 hdev->set_diag = btusb_bcm_set_diag; 4277 4278 /* Broadcom LM_DIAG Interface numbers are hardcoded */ 4279 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2); 4280 } 4281 4282 /* Combined Intel Device setup to support multiple setup routine */ 4283 if (id->driver_info & BTUSB_INTEL_COMBINED) { 4284 err = btintel_configure_setup(hdev, btusb_driver.name); 4285 if (err) 4286 goto out_free_dev; 4287 4288 /* Transport specific configuration */ 4289 hdev->send = btusb_send_frame_intel; 4290 hdev->cmd_timeout = btusb_intel_cmd_timeout; 4291 4292 if (id->driver_info & BTUSB_INTEL_NO_WBS_SUPPORT) 4293 btintel_set_flag(hdev, INTEL_ROM_LEGACY_NO_WBS_SUPPORT); 4294 4295 if (id->driver_info & BTUSB_INTEL_BROKEN_INITIAL_NCMD) 4296 btintel_set_flag(hdev, INTEL_BROKEN_INITIAL_NCMD); 4297 4298 if (id->driver_info & BTUSB_INTEL_BROKEN_SHUTDOWN_LED) 4299 btintel_set_flag(hdev, INTEL_BROKEN_SHUTDOWN_LED); 4300 } 4301 4302 if (id->driver_info & BTUSB_MARVELL) 4303 hdev->set_bdaddr = btusb_set_bdaddr_marvell; 4304 4305 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_MTK) && 4306 (id->driver_info & BTUSB_MEDIATEK)) { 4307 hdev->setup = btusb_mtk_setup; 4308 hdev->shutdown = btusb_mtk_shutdown; 4309 hdev->manufacturer = 70; 4310 hdev->cmd_timeout = btusb_mtk_cmd_timeout; 4311 hdev->set_bdaddr = btmtk_set_bdaddr; 4312 set_bit(HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN, &hdev->quirks); 4313 set_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks); 4314 data->recv_acl = btusb_recv_acl_mtk; 4315 } 4316 4317 if (id->driver_info & BTUSB_SWAVE) { 4318 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks); 4319 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks); 4320 } 4321 4322 if (id->driver_info & BTUSB_INTEL_BOOT) { 4323 hdev->manufacturer = 2; 4324 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks); 4325 } 4326 4327 if (id->driver_info & BTUSB_ATH3012) { 4328 data->setup_on_usb = btusb_setup_qca; 4329 hdev->set_bdaddr = btusb_set_bdaddr_ath3012; 4330 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); 4331 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks); 4332 } 4333 4334 if (id->driver_info & BTUSB_QCA_ROME) { 4335 data->setup_on_usb = btusb_setup_qca; 4336 hdev->set_bdaddr = btusb_set_bdaddr_ath3012; 4337 hdev->cmd_timeout = btusb_qca_cmd_timeout; 4338 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); 4339 btusb_check_needs_reset_resume(intf); 4340 } 4341 4342 if (id->driver_info & BTUSB_QCA_WCN6855) { 4343 data->qca_dump.id_vendor = id->idVendor; 4344 data->qca_dump.id_product = id->idProduct; 4345 data->recv_event = btusb_recv_evt_qca; 4346 data->recv_acl = btusb_recv_acl_qca; 4347 hci_devcd_register(hdev, btusb_coredump_qca, btusb_dump_hdr_qca, NULL); 4348 data->setup_on_usb = btusb_setup_qca; 4349 hdev->shutdown = btusb_shutdown_qca; 4350 hdev->set_bdaddr = btusb_set_bdaddr_wcn6855; 4351 hdev->cmd_timeout = btusb_qca_cmd_timeout; 4352 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); 4353 hci_set_msft_opcode(hdev, 0xFD70); 4354 } 4355 4356 if (id->driver_info & BTUSB_AMP) { 4357 /* AMP controllers do not support SCO packets */ 4358 data->isoc = NULL; 4359 } else { 4360 /* Interface orders are hardcoded in the specification */ 4361 data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1); 4362 data->isoc_ifnum = ifnum_base + 1; 4363 } 4364 4365 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_RTL) && 4366 (id->driver_info & BTUSB_REALTEK)) { 4367 hdev->setup = btusb_setup_realtek; 4368 hdev->shutdown = btrtl_shutdown_realtek; 4369 hdev->cmd_timeout = btusb_rtl_cmd_timeout; 4370 4371 /* Realtek devices need to set remote wakeup on auto-suspend */ 4372 set_bit(BTUSB_WAKEUP_AUTOSUSPEND, &data->flags); 4373 set_bit(BTUSB_USE_ALT3_FOR_WBS, &data->flags); 4374 } 4375 4376 if (id->driver_info & BTUSB_ACTIONS_SEMI) { 4377 /* Support is advertised, but not implemented */ 4378 set_bit(HCI_QUIRK_BROKEN_ERR_DATA_REPORTING, &hdev->quirks); 4379 set_bit(HCI_QUIRK_BROKEN_READ_TRANSMIT_POWER, &hdev->quirks); 4380 set_bit(HCI_QUIRK_BROKEN_SET_RPA_TIMEOUT, &hdev->quirks); 4381 set_bit(HCI_QUIRK_BROKEN_EXT_SCAN, &hdev->quirks); 4382 } 4383 4384 if (!reset) 4385 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); 4386 4387 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) { 4388 if (!disable_scofix) 4389 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks); 4390 } 4391 4392 if (id->driver_info & BTUSB_BROKEN_ISOC) 4393 data->isoc = NULL; 4394 4395 if (id->driver_info & BTUSB_WIDEBAND_SPEECH) 4396 set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED, &hdev->quirks); 4397 4398 if (id->driver_info & BTUSB_VALID_LE_STATES) 4399 set_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks); 4400 4401 if (id->driver_info & BTUSB_DIGIANSWER) { 4402 data->cmdreq_type = USB_TYPE_VENDOR; 4403 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); 4404 } 4405 4406 if (id->driver_info & BTUSB_CSR) { 4407 struct usb_device *udev = data->udev; 4408 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice); 4409 4410 /* Old firmware would otherwise execute USB reset */ 4411 if (bcdDevice < 0x117) 4412 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); 4413 4414 /* This must be set first in case we disable it for fakes */ 4415 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); 4416 4417 /* Fake CSR devices with broken commands */ 4418 if (le16_to_cpu(udev->descriptor.idVendor) == 0x0a12 && 4419 le16_to_cpu(udev->descriptor.idProduct) == 0x0001) 4420 hdev->setup = btusb_setup_csr; 4421 } 4422 4423 if (id->driver_info & BTUSB_SNIFFER) { 4424 struct usb_device *udev = data->udev; 4425 4426 /* New sniffer firmware has crippled HCI interface */ 4427 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997) 4428 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks); 4429 } 4430 4431 if (id->driver_info & BTUSB_INTEL_BOOT) { 4432 /* A bug in the bootloader causes that interrupt interface is 4433 * only enabled after receiving SetInterface(0, AltSetting=0). 4434 */ 4435 err = usb_set_interface(data->udev, 0, 0); 4436 if (err < 0) { 4437 BT_ERR("failed to set interface 0, alt 0 %d", err); 4438 goto out_free_dev; 4439 } 4440 } 4441 4442 if (data->isoc) { 4443 err = usb_driver_claim_interface(&btusb_driver, 4444 data->isoc, data); 4445 if (err < 0) 4446 goto out_free_dev; 4447 } 4448 4449 if (IS_ENABLED(CONFIG_BT_HCIBTUSB_BCM) && data->diag) { 4450 if (!usb_driver_claim_interface(&btusb_driver, 4451 data->diag, data)) 4452 __set_diag_interface(hdev); 4453 else 4454 data->diag = NULL; 4455 } 4456 4457 if (enable_autosuspend) 4458 usb_enable_autosuspend(data->udev); 4459 4460 data->poll_sync = enable_poll_sync; 4461 4462 err = hci_register_dev(hdev); 4463 if (err < 0) 4464 goto out_free_dev; 4465 4466 usb_set_intfdata(intf, data); 4467 4468 debugfs_create_file("force_poll_sync", 0644, hdev->debugfs, data, 4469 &force_poll_sync_fops); 4470 4471 return 0; 4472 4473 out_free_dev: 4474 if (data->reset_gpio) 4475 gpiod_put(data->reset_gpio); 4476 hci_free_dev(hdev); 4477 return err; 4478 } 4479 4480 static void btusb_disconnect(struct usb_interface *intf) 4481 { 4482 struct btusb_data *data = usb_get_intfdata(intf); 4483 struct hci_dev *hdev; 4484 4485 BT_DBG("intf %p", intf); 4486 4487 if (!data) 4488 return; 4489 4490 hdev = data->hdev; 4491 usb_set_intfdata(data->intf, NULL); 4492 4493 if (data->isoc) 4494 usb_set_intfdata(data->isoc, NULL); 4495 4496 if (data->diag) 4497 usb_set_intfdata(data->diag, NULL); 4498 4499 hci_unregister_dev(hdev); 4500 4501 if (intf == data->intf) { 4502 if (data->isoc) 4503 usb_driver_release_interface(&btusb_driver, data->isoc); 4504 if (data->diag) 4505 usb_driver_release_interface(&btusb_driver, data->diag); 4506 } else if (intf == data->isoc) { 4507 if (data->diag) 4508 usb_driver_release_interface(&btusb_driver, data->diag); 4509 usb_driver_release_interface(&btusb_driver, data->intf); 4510 } else if (intf == data->diag) { 4511 usb_driver_release_interface(&btusb_driver, data->intf); 4512 if (data->isoc) 4513 usb_driver_release_interface(&btusb_driver, data->isoc); 4514 } 4515 4516 if (data->oob_wake_irq) 4517 device_init_wakeup(&data->udev->dev, false); 4518 4519 if (data->reset_gpio) 4520 gpiod_put(data->reset_gpio); 4521 4522 hci_free_dev(hdev); 4523 } 4524 4525 #ifdef CONFIG_PM 4526 static int btusb_suspend(struct usb_interface *intf, pm_message_t message) 4527 { 4528 struct btusb_data *data = usb_get_intfdata(intf); 4529 4530 BT_DBG("intf %p", intf); 4531 4532 if (data->suspend_count++) 4533 return 0; 4534 4535 spin_lock_irq(&data->txlock); 4536 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) { 4537 set_bit(BTUSB_SUSPENDING, &data->flags); 4538 spin_unlock_irq(&data->txlock); 4539 } else { 4540 spin_unlock_irq(&data->txlock); 4541 data->suspend_count--; 4542 return -EBUSY; 4543 } 4544 4545 cancel_work_sync(&data->work); 4546 4547 btusb_stop_traffic(data); 4548 usb_kill_anchored_urbs(&data->tx_anchor); 4549 4550 if (data->oob_wake_irq && device_may_wakeup(&data->udev->dev)) { 4551 set_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags); 4552 enable_irq_wake(data->oob_wake_irq); 4553 enable_irq(data->oob_wake_irq); 4554 } 4555 4556 /* For global suspend, Realtek devices lose the loaded fw 4557 * in them. But for autosuspend, firmware should remain. 4558 * Actually, it depends on whether the usb host sends 4559 * set feature (enable wakeup) or not. 4560 */ 4561 if (test_bit(BTUSB_WAKEUP_AUTOSUSPEND, &data->flags)) { 4562 if (PMSG_IS_AUTO(message) && 4563 device_can_wakeup(&data->udev->dev)) 4564 data->udev->do_remote_wakeup = 1; 4565 else if (!PMSG_IS_AUTO(message) && 4566 !device_may_wakeup(&data->udev->dev)) { 4567 data->udev->do_remote_wakeup = 0; 4568 data->udev->reset_resume = 1; 4569 } 4570 } 4571 4572 return 0; 4573 } 4574 4575 static void play_deferred(struct btusb_data *data) 4576 { 4577 struct urb *urb; 4578 int err; 4579 4580 while ((urb = usb_get_from_anchor(&data->deferred))) { 4581 usb_anchor_urb(urb, &data->tx_anchor); 4582 4583 err = usb_submit_urb(urb, GFP_ATOMIC); 4584 if (err < 0) { 4585 if (err != -EPERM && err != -ENODEV) 4586 BT_ERR("%s urb %p submission failed (%d)", 4587 data->hdev->name, urb, -err); 4588 kfree(urb->setup_packet); 4589 usb_unanchor_urb(urb); 4590 usb_free_urb(urb); 4591 break; 4592 } 4593 4594 data->tx_in_flight++; 4595 usb_free_urb(urb); 4596 } 4597 4598 /* Cleanup the rest deferred urbs. */ 4599 while ((urb = usb_get_from_anchor(&data->deferred))) { 4600 kfree(urb->setup_packet); 4601 usb_free_urb(urb); 4602 } 4603 } 4604 4605 static int btusb_resume(struct usb_interface *intf) 4606 { 4607 struct btusb_data *data = usb_get_intfdata(intf); 4608 struct hci_dev *hdev = data->hdev; 4609 int err = 0; 4610 4611 BT_DBG("intf %p", intf); 4612 4613 if (--data->suspend_count) 4614 return 0; 4615 4616 /* Disable only if not already disabled (keep it balanced) */ 4617 if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) { 4618 disable_irq(data->oob_wake_irq); 4619 disable_irq_wake(data->oob_wake_irq); 4620 } 4621 4622 if (!test_bit(HCI_RUNNING, &hdev->flags)) 4623 goto done; 4624 4625 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) { 4626 err = btusb_submit_intr_urb(hdev, GFP_NOIO); 4627 if (err < 0) { 4628 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 4629 goto failed; 4630 } 4631 } 4632 4633 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) { 4634 err = btusb_submit_bulk_urb(hdev, GFP_NOIO); 4635 if (err < 0) { 4636 clear_bit(BTUSB_BULK_RUNNING, &data->flags); 4637 goto failed; 4638 } 4639 4640 btusb_submit_bulk_urb(hdev, GFP_NOIO); 4641 } 4642 4643 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) { 4644 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0) 4645 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 4646 else 4647 btusb_submit_isoc_urb(hdev, GFP_NOIO); 4648 } 4649 4650 spin_lock_irq(&data->txlock); 4651 play_deferred(data); 4652 clear_bit(BTUSB_SUSPENDING, &data->flags); 4653 spin_unlock_irq(&data->txlock); 4654 schedule_work(&data->work); 4655 4656 return 0; 4657 4658 failed: 4659 usb_scuttle_anchored_urbs(&data->deferred); 4660 done: 4661 spin_lock_irq(&data->txlock); 4662 clear_bit(BTUSB_SUSPENDING, &data->flags); 4663 spin_unlock_irq(&data->txlock); 4664 4665 return err; 4666 } 4667 #endif 4668 4669 #ifdef CONFIG_DEV_COREDUMP 4670 static void btusb_coredump(struct device *dev) 4671 { 4672 struct btusb_data *data = dev_get_drvdata(dev); 4673 struct hci_dev *hdev = data->hdev; 4674 4675 if (hdev->dump.coredump) 4676 hdev->dump.coredump(hdev); 4677 } 4678 #endif 4679 4680 static struct usb_driver btusb_driver = { 4681 .name = "btusb", 4682 .probe = btusb_probe, 4683 .disconnect = btusb_disconnect, 4684 #ifdef CONFIG_PM 4685 .suspend = btusb_suspend, 4686 .resume = btusb_resume, 4687 #endif 4688 .id_table = btusb_table, 4689 .supports_autosuspend = 1, 4690 .disable_hub_initiated_lpm = 1, 4691 4692 #ifdef CONFIG_DEV_COREDUMP 4693 .drvwrap = { 4694 .driver = { 4695 .coredump = btusb_coredump, 4696 }, 4697 }, 4698 #endif 4699 }; 4700 4701 module_usb_driver(btusb_driver); 4702 4703 module_param(disable_scofix, bool, 0644); 4704 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size"); 4705 4706 module_param(force_scofix, bool, 0644); 4707 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size"); 4708 4709 module_param(enable_autosuspend, bool, 0644); 4710 MODULE_PARM_DESC(enable_autosuspend, "Enable USB autosuspend by default"); 4711 4712 module_param(reset, bool, 0644); 4713 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization"); 4714 4715 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); 4716 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION); 4717 MODULE_VERSION(VERSION); 4718 MODULE_LICENSE("GPL"); 4719