1 /* 2 * 3 * Generic Bluetooth USB driver 4 * 5 * Copyright (C) 2005-2008 Marcel Holtmann <marcel@holtmann.org> 6 * 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; either version 2 of the License, or 11 * (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 21 * 22 */ 23 24 #include <linux/module.h> 25 #include <linux/usb.h> 26 #include <linux/firmware.h> 27 #include <linux/of_device.h> 28 #include <linux/of_irq.h> 29 #include <linux/suspend.h> 30 #include <asm/unaligned.h> 31 32 #include <net/bluetooth/bluetooth.h> 33 #include <net/bluetooth/hci_core.h> 34 35 #include "btintel.h" 36 #include "btbcm.h" 37 #include "btrtl.h" 38 39 #define VERSION "0.8" 40 41 static bool disable_scofix; 42 static bool force_scofix; 43 44 static bool reset = true; 45 46 static struct usb_driver btusb_driver; 47 48 #define BTUSB_IGNORE 0x01 49 #define BTUSB_DIGIANSWER 0x02 50 #define BTUSB_CSR 0x04 51 #define BTUSB_SNIFFER 0x08 52 #define BTUSB_BCM92035 0x10 53 #define BTUSB_BROKEN_ISOC 0x20 54 #define BTUSB_WRONG_SCO_MTU 0x40 55 #define BTUSB_ATH3012 0x80 56 #define BTUSB_INTEL 0x100 57 #define BTUSB_INTEL_BOOT 0x200 58 #define BTUSB_BCM_PATCHRAM 0x400 59 #define BTUSB_MARVELL 0x800 60 #define BTUSB_SWAVE 0x1000 61 #define BTUSB_INTEL_NEW 0x2000 62 #define BTUSB_AMP 0x4000 63 #define BTUSB_QCA_ROME 0x8000 64 #define BTUSB_BCM_APPLE 0x10000 65 #define BTUSB_REALTEK 0x20000 66 #define BTUSB_BCM2045 0x40000 67 #define BTUSB_IFNUM_2 0x80000 68 #define BTUSB_CW6622 0x100000 69 70 static const struct usb_device_id btusb_table[] = { 71 /* Generic Bluetooth USB device */ 72 { USB_DEVICE_INFO(0xe0, 0x01, 0x01) }, 73 74 /* Generic Bluetooth AMP device */ 75 { USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP }, 76 77 /* Generic Bluetooth USB interface */ 78 { USB_INTERFACE_INFO(0xe0, 0x01, 0x01) }, 79 80 /* Apple-specific (Broadcom) devices */ 81 { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01), 82 .driver_info = BTUSB_BCM_APPLE | BTUSB_IFNUM_2 }, 83 84 /* MediaTek MT76x0E */ 85 { USB_DEVICE(0x0e8d, 0x763f) }, 86 87 /* Broadcom SoftSailing reporting vendor specific */ 88 { USB_DEVICE(0x0a5c, 0x21e1) }, 89 90 /* Apple MacBookPro 7,1 */ 91 { USB_DEVICE(0x05ac, 0x8213) }, 92 93 /* Apple iMac11,1 */ 94 { USB_DEVICE(0x05ac, 0x8215) }, 95 96 /* Apple MacBookPro6,2 */ 97 { USB_DEVICE(0x05ac, 0x8218) }, 98 99 /* Apple MacBookAir3,1, MacBookAir3,2 */ 100 { USB_DEVICE(0x05ac, 0x821b) }, 101 102 /* Apple MacBookAir4,1 */ 103 { USB_DEVICE(0x05ac, 0x821f) }, 104 105 /* Apple MacBookPro8,2 */ 106 { USB_DEVICE(0x05ac, 0x821a) }, 107 108 /* Apple MacMini5,1 */ 109 { USB_DEVICE(0x05ac, 0x8281) }, 110 111 /* AVM BlueFRITZ! USB v2.0 */ 112 { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE }, 113 114 /* Bluetooth Ultraport Module from IBM */ 115 { USB_DEVICE(0x04bf, 0x030a) }, 116 117 /* ALPS Modules with non-standard id */ 118 { USB_DEVICE(0x044e, 0x3001) }, 119 { USB_DEVICE(0x044e, 0x3002) }, 120 121 /* Ericsson with non-standard id */ 122 { USB_DEVICE(0x0bdb, 0x1002) }, 123 124 /* Canyon CN-BTU1 with HID interfaces */ 125 { USB_DEVICE(0x0c10, 0x0000) }, 126 127 /* Broadcom BCM20702A0 */ 128 { USB_DEVICE(0x413c, 0x8197) }, 129 130 /* Broadcom BCM20702B0 (Dynex/Insignia) */ 131 { USB_DEVICE(0x19ff, 0x0239), .driver_info = BTUSB_BCM_PATCHRAM }, 132 133 /* Broadcom BCM43142A0 (Foxconn/Lenovo) */ 134 { USB_DEVICE(0x105b, 0xe065), .driver_info = BTUSB_BCM_PATCHRAM }, 135 136 /* Broadcom BCM920703 (HTC Vive) */ 137 { USB_VENDOR_AND_INTERFACE_INFO(0x0bb4, 0xff, 0x01, 0x01), 138 .driver_info = BTUSB_BCM_PATCHRAM }, 139 140 /* Foxconn - Hon Hai */ 141 { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01), 142 .driver_info = BTUSB_BCM_PATCHRAM }, 143 144 /* Lite-On Technology - Broadcom based */ 145 { USB_VENDOR_AND_INTERFACE_INFO(0x04ca, 0xff, 0x01, 0x01), 146 .driver_info = BTUSB_BCM_PATCHRAM }, 147 148 /* Broadcom devices with vendor specific id */ 149 { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01), 150 .driver_info = BTUSB_BCM_PATCHRAM }, 151 152 /* ASUSTek Computer - Broadcom based */ 153 { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01), 154 .driver_info = BTUSB_BCM_PATCHRAM }, 155 156 /* Belkin F8065bf - Broadcom based */ 157 { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01), 158 .driver_info = BTUSB_BCM_PATCHRAM }, 159 160 /* IMC Networks - Broadcom based */ 161 { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01), 162 .driver_info = BTUSB_BCM_PATCHRAM }, 163 164 /* Dell Computer - Broadcom based */ 165 { USB_VENDOR_AND_INTERFACE_INFO(0x413c, 0xff, 0x01, 0x01), 166 .driver_info = BTUSB_BCM_PATCHRAM }, 167 168 /* Toshiba Corp - Broadcom based */ 169 { USB_VENDOR_AND_INTERFACE_INFO(0x0930, 0xff, 0x01, 0x01), 170 .driver_info = BTUSB_BCM_PATCHRAM }, 171 172 /* Intel Bluetooth USB Bootloader (RAM module) */ 173 { USB_DEVICE(0x8087, 0x0a5a), 174 .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC }, 175 176 { } /* Terminating entry */ 177 }; 178 179 MODULE_DEVICE_TABLE(usb, btusb_table); 180 181 static const struct usb_device_id blacklist_table[] = { 182 /* CSR BlueCore devices */ 183 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR }, 184 185 /* Broadcom BCM2033 without firmware */ 186 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE }, 187 188 /* Broadcom BCM2045 devices */ 189 { USB_DEVICE(0x0a5c, 0x2045), .driver_info = BTUSB_BCM2045 }, 190 191 /* Atheros 3011 with sflash firmware */ 192 { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE }, 193 { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE }, 194 { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE }, 195 { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE }, 196 { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE }, 197 { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE }, 198 { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE }, 199 200 /* Atheros AR9285 Malbec with sflash firmware */ 201 { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE }, 202 203 /* Atheros 3012 with sflash firmware */ 204 { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 }, 205 { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 }, 206 { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 }, 207 { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 }, 208 { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 }, 209 { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 }, 210 { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 }, 211 { USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 }, 212 { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 }, 213 { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 }, 214 { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 }, 215 { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 }, 216 { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 }, 217 { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 }, 218 { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 }, 219 { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 }, 220 { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 }, 221 { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 }, 222 { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 }, 223 { USB_DEVICE(0x04ca, 0x3018), .driver_info = BTUSB_ATH3012 }, 224 { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 }, 225 { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 }, 226 { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 }, 227 { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 }, 228 { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 }, 229 { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 }, 230 { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 }, 231 { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 }, 232 { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 }, 233 { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 }, 234 { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 }, 235 { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 }, 236 { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 }, 237 { USB_DEVICE(0x0cf3, 0x817b), .driver_info = BTUSB_ATH3012 }, 238 { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 }, 239 { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 }, 240 { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 }, 241 { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 }, 242 { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 }, 243 { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 }, 244 { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 }, 245 { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 }, 246 { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 }, 247 { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 }, 248 { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 }, 249 { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 }, 250 { USB_DEVICE(0x13d3, 0x3472), .driver_info = BTUSB_ATH3012 }, 251 { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 }, 252 { USB_DEVICE(0x13d3, 0x3487), .driver_info = BTUSB_ATH3012 }, 253 { USB_DEVICE(0x13d3, 0x3490), .driver_info = BTUSB_ATH3012 }, 254 255 /* Atheros AR5BBU12 with sflash firmware */ 256 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE }, 257 258 /* Atheros AR5BBU12 with sflash firmware */ 259 { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 }, 260 { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 }, 261 262 /* QCA ROME chipset */ 263 { USB_DEVICE(0x0cf3, 0xe007), .driver_info = BTUSB_QCA_ROME }, 264 { USB_DEVICE(0x0cf3, 0xe009), .driver_info = BTUSB_QCA_ROME }, 265 { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME }, 266 { USB_DEVICE(0x0cf3, 0xe301), .driver_info = BTUSB_QCA_ROME }, 267 { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME }, 268 { USB_DEVICE(0x0489, 0xe092), .driver_info = BTUSB_QCA_ROME }, 269 { USB_DEVICE(0x0489, 0xe0a2), .driver_info = BTUSB_QCA_ROME }, 270 { USB_DEVICE(0x04ca, 0x3011), .driver_info = BTUSB_QCA_ROME }, 271 272 /* Broadcom BCM2035 */ 273 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 }, 274 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU }, 275 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU }, 276 277 /* Broadcom BCM2045 */ 278 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU }, 279 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU }, 280 281 /* IBM/Lenovo ThinkPad with Broadcom chip */ 282 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU }, 283 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU }, 284 285 /* HP laptop with Broadcom chip */ 286 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU }, 287 288 /* Dell laptop with Broadcom chip */ 289 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU }, 290 291 /* Dell Wireless 370 and 410 devices */ 292 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU }, 293 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU }, 294 295 /* Belkin F8T012 and F8T013 devices */ 296 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU }, 297 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU }, 298 299 /* Asus WL-BTD202 device */ 300 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU }, 301 302 /* Kensington Bluetooth USB adapter */ 303 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU }, 304 305 /* RTX Telecom based adapters with buggy SCO support */ 306 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC }, 307 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC }, 308 309 /* CONWISE Technology based adapters with buggy SCO support */ 310 { USB_DEVICE(0x0e5e, 0x6622), 311 .driver_info = BTUSB_BROKEN_ISOC | BTUSB_CW6622}, 312 313 /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */ 314 { USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE }, 315 316 /* Digianswer devices */ 317 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER }, 318 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE }, 319 320 /* CSR BlueCore Bluetooth Sniffer */ 321 { USB_DEVICE(0x0a12, 0x0002), 322 .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC }, 323 324 /* Frontline ComProbe Bluetooth Sniffer */ 325 { USB_DEVICE(0x16d3, 0x0002), 326 .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC }, 327 328 /* Marvell Bluetooth devices */ 329 { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL }, 330 { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL }, 331 { USB_DEVICE(0x1286, 0x204e), .driver_info = BTUSB_MARVELL }, 332 333 /* Intel Bluetooth devices */ 334 { USB_DEVICE(0x8087, 0x0025), .driver_info = BTUSB_INTEL_NEW }, 335 { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR }, 336 { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL }, 337 { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL }, 338 { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_NEW }, 339 { USB_DEVICE(0x8087, 0x0aa7), .driver_info = BTUSB_INTEL }, 340 { USB_DEVICE(0x8087, 0x0aaa), .driver_info = BTUSB_INTEL_NEW }, 341 342 /* Other Intel Bluetooth devices */ 343 { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01), 344 .driver_info = BTUSB_IGNORE }, 345 346 /* Realtek Bluetooth devices */ 347 { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01), 348 .driver_info = BTUSB_REALTEK }, 349 350 /* Additional Realtek 8723AE Bluetooth devices */ 351 { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK }, 352 { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK }, 353 354 /* Additional Realtek 8723BE Bluetooth devices */ 355 { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK }, 356 { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK }, 357 { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK }, 358 { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK }, 359 { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK }, 360 361 /* Additional Realtek 8821AE Bluetooth devices */ 362 { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK }, 363 { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK }, 364 { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK }, 365 { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK }, 366 { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK }, 367 368 /* Silicon Wave based devices */ 369 { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE }, 370 371 { } /* Terminating entry */ 372 }; 373 374 #define BTUSB_MAX_ISOC_FRAMES 10 375 376 #define BTUSB_INTR_RUNNING 0 377 #define BTUSB_BULK_RUNNING 1 378 #define BTUSB_ISOC_RUNNING 2 379 #define BTUSB_SUSPENDING 3 380 #define BTUSB_DID_ISO_RESUME 4 381 #define BTUSB_BOOTLOADER 5 382 #define BTUSB_DOWNLOADING 6 383 #define BTUSB_FIRMWARE_LOADED 7 384 #define BTUSB_FIRMWARE_FAILED 8 385 #define BTUSB_BOOTING 9 386 #define BTUSB_RESET_RESUME 10 387 #define BTUSB_DIAG_RUNNING 11 388 #define BTUSB_OOB_WAKE_ENABLED 12 389 390 struct btusb_data { 391 struct hci_dev *hdev; 392 struct usb_device *udev; 393 struct usb_interface *intf; 394 struct usb_interface *isoc; 395 struct usb_interface *diag; 396 397 unsigned long flags; 398 399 struct work_struct work; 400 struct work_struct waker; 401 402 struct usb_anchor deferred; 403 struct usb_anchor tx_anchor; 404 int tx_in_flight; 405 spinlock_t txlock; 406 407 struct usb_anchor intr_anchor; 408 struct usb_anchor bulk_anchor; 409 struct usb_anchor isoc_anchor; 410 struct usb_anchor diag_anchor; 411 spinlock_t rxlock; 412 413 struct sk_buff *evt_skb; 414 struct sk_buff *acl_skb; 415 struct sk_buff *sco_skb; 416 417 struct usb_endpoint_descriptor *intr_ep; 418 struct usb_endpoint_descriptor *bulk_tx_ep; 419 struct usb_endpoint_descriptor *bulk_rx_ep; 420 struct usb_endpoint_descriptor *isoc_tx_ep; 421 struct usb_endpoint_descriptor *isoc_rx_ep; 422 struct usb_endpoint_descriptor *diag_tx_ep; 423 struct usb_endpoint_descriptor *diag_rx_ep; 424 425 __u8 cmdreq_type; 426 __u8 cmdreq; 427 428 unsigned int sco_num; 429 int isoc_altsetting; 430 int suspend_count; 431 432 int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb); 433 int (*recv_bulk)(struct btusb_data *data, void *buffer, int count); 434 435 int (*setup_on_usb)(struct hci_dev *hdev); 436 437 int oob_wake_irq; /* irq for out-of-band wake-on-bt */ 438 }; 439 440 static inline void btusb_free_frags(struct btusb_data *data) 441 { 442 unsigned long flags; 443 444 spin_lock_irqsave(&data->rxlock, flags); 445 446 kfree_skb(data->evt_skb); 447 data->evt_skb = NULL; 448 449 kfree_skb(data->acl_skb); 450 data->acl_skb = NULL; 451 452 kfree_skb(data->sco_skb); 453 data->sco_skb = NULL; 454 455 spin_unlock_irqrestore(&data->rxlock, flags); 456 } 457 458 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count) 459 { 460 struct sk_buff *skb; 461 int err = 0; 462 463 spin_lock(&data->rxlock); 464 skb = data->evt_skb; 465 466 while (count) { 467 int len; 468 469 if (!skb) { 470 skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC); 471 if (!skb) { 472 err = -ENOMEM; 473 break; 474 } 475 476 hci_skb_pkt_type(skb) = HCI_EVENT_PKT; 477 hci_skb_expect(skb) = HCI_EVENT_HDR_SIZE; 478 } 479 480 len = min_t(uint, hci_skb_expect(skb), count); 481 skb_put_data(skb, buffer, len); 482 483 count -= len; 484 buffer += len; 485 hci_skb_expect(skb) -= len; 486 487 if (skb->len == HCI_EVENT_HDR_SIZE) { 488 /* Complete event header */ 489 hci_skb_expect(skb) = hci_event_hdr(skb)->plen; 490 491 if (skb_tailroom(skb) < hci_skb_expect(skb)) { 492 kfree_skb(skb); 493 skb = NULL; 494 495 err = -EILSEQ; 496 break; 497 } 498 } 499 500 if (!hci_skb_expect(skb)) { 501 /* Complete frame */ 502 data->recv_event(data->hdev, skb); 503 skb = NULL; 504 } 505 } 506 507 data->evt_skb = skb; 508 spin_unlock(&data->rxlock); 509 510 return err; 511 } 512 513 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count) 514 { 515 struct sk_buff *skb; 516 int err = 0; 517 518 spin_lock(&data->rxlock); 519 skb = data->acl_skb; 520 521 while (count) { 522 int len; 523 524 if (!skb) { 525 skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC); 526 if (!skb) { 527 err = -ENOMEM; 528 break; 529 } 530 531 hci_skb_pkt_type(skb) = HCI_ACLDATA_PKT; 532 hci_skb_expect(skb) = HCI_ACL_HDR_SIZE; 533 } 534 535 len = min_t(uint, hci_skb_expect(skb), count); 536 skb_put_data(skb, buffer, len); 537 538 count -= len; 539 buffer += len; 540 hci_skb_expect(skb) -= len; 541 542 if (skb->len == HCI_ACL_HDR_SIZE) { 543 __le16 dlen = hci_acl_hdr(skb)->dlen; 544 545 /* Complete ACL header */ 546 hci_skb_expect(skb) = __le16_to_cpu(dlen); 547 548 if (skb_tailroom(skb) < hci_skb_expect(skb)) { 549 kfree_skb(skb); 550 skb = NULL; 551 552 err = -EILSEQ; 553 break; 554 } 555 } 556 557 if (!hci_skb_expect(skb)) { 558 /* Complete frame */ 559 hci_recv_frame(data->hdev, skb); 560 skb = NULL; 561 } 562 } 563 564 data->acl_skb = skb; 565 spin_unlock(&data->rxlock); 566 567 return err; 568 } 569 570 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count) 571 { 572 struct sk_buff *skb; 573 int err = 0; 574 575 spin_lock(&data->rxlock); 576 skb = data->sco_skb; 577 578 while (count) { 579 int len; 580 581 if (!skb) { 582 skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC); 583 if (!skb) { 584 err = -ENOMEM; 585 break; 586 } 587 588 hci_skb_pkt_type(skb) = HCI_SCODATA_PKT; 589 hci_skb_expect(skb) = HCI_SCO_HDR_SIZE; 590 } 591 592 len = min_t(uint, hci_skb_expect(skb), count); 593 skb_put_data(skb, buffer, len); 594 595 count -= len; 596 buffer += len; 597 hci_skb_expect(skb) -= len; 598 599 if (skb->len == HCI_SCO_HDR_SIZE) { 600 /* Complete SCO header */ 601 hci_skb_expect(skb) = hci_sco_hdr(skb)->dlen; 602 603 if (skb_tailroom(skb) < hci_skb_expect(skb)) { 604 kfree_skb(skb); 605 skb = NULL; 606 607 err = -EILSEQ; 608 break; 609 } 610 } 611 612 if (!hci_skb_expect(skb)) { 613 /* Complete frame */ 614 hci_recv_frame(data->hdev, skb); 615 skb = NULL; 616 } 617 } 618 619 data->sco_skb = skb; 620 spin_unlock(&data->rxlock); 621 622 return err; 623 } 624 625 static void btusb_intr_complete(struct urb *urb) 626 { 627 struct hci_dev *hdev = urb->context; 628 struct btusb_data *data = hci_get_drvdata(hdev); 629 int err; 630 631 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, 632 urb->actual_length); 633 634 if (!test_bit(HCI_RUNNING, &hdev->flags)) 635 return; 636 637 if (urb->status == 0) { 638 hdev->stat.byte_rx += urb->actual_length; 639 640 if (btusb_recv_intr(data, urb->transfer_buffer, 641 urb->actual_length) < 0) { 642 BT_ERR("%s corrupted event packet", hdev->name); 643 hdev->stat.err_rx++; 644 } 645 } else if (urb->status == -ENOENT) { 646 /* Avoid suspend failed when usb_kill_urb */ 647 return; 648 } 649 650 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags)) 651 return; 652 653 usb_mark_last_busy(data->udev); 654 usb_anchor_urb(urb, &data->intr_anchor); 655 656 err = usb_submit_urb(urb, GFP_ATOMIC); 657 if (err < 0) { 658 /* -EPERM: urb is being killed; 659 * -ENODEV: device got disconnected */ 660 if (err != -EPERM && err != -ENODEV) 661 BT_ERR("%s urb %p failed to resubmit (%d)", 662 hdev->name, urb, -err); 663 usb_unanchor_urb(urb); 664 } 665 } 666 667 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags) 668 { 669 struct btusb_data *data = hci_get_drvdata(hdev); 670 struct urb *urb; 671 unsigned char *buf; 672 unsigned int pipe; 673 int err, size; 674 675 BT_DBG("%s", hdev->name); 676 677 if (!data->intr_ep) 678 return -ENODEV; 679 680 urb = usb_alloc_urb(0, mem_flags); 681 if (!urb) 682 return -ENOMEM; 683 684 size = le16_to_cpu(data->intr_ep->wMaxPacketSize); 685 686 buf = kmalloc(size, mem_flags); 687 if (!buf) { 688 usb_free_urb(urb); 689 return -ENOMEM; 690 } 691 692 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress); 693 694 usb_fill_int_urb(urb, data->udev, pipe, buf, size, 695 btusb_intr_complete, hdev, data->intr_ep->bInterval); 696 697 urb->transfer_flags |= URB_FREE_BUFFER; 698 699 usb_anchor_urb(urb, &data->intr_anchor); 700 701 err = usb_submit_urb(urb, mem_flags); 702 if (err < 0) { 703 if (err != -EPERM && err != -ENODEV) 704 BT_ERR("%s urb %p submission failed (%d)", 705 hdev->name, urb, -err); 706 usb_unanchor_urb(urb); 707 } 708 709 usb_free_urb(urb); 710 711 return err; 712 } 713 714 static void btusb_bulk_complete(struct urb *urb) 715 { 716 struct hci_dev *hdev = urb->context; 717 struct btusb_data *data = hci_get_drvdata(hdev); 718 int err; 719 720 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, 721 urb->actual_length); 722 723 if (!test_bit(HCI_RUNNING, &hdev->flags)) 724 return; 725 726 if (urb->status == 0) { 727 hdev->stat.byte_rx += urb->actual_length; 728 729 if (data->recv_bulk(data, urb->transfer_buffer, 730 urb->actual_length) < 0) { 731 BT_ERR("%s corrupted ACL packet", hdev->name); 732 hdev->stat.err_rx++; 733 } 734 } else if (urb->status == -ENOENT) { 735 /* Avoid suspend failed when usb_kill_urb */ 736 return; 737 } 738 739 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags)) 740 return; 741 742 usb_anchor_urb(urb, &data->bulk_anchor); 743 usb_mark_last_busy(data->udev); 744 745 err = usb_submit_urb(urb, GFP_ATOMIC); 746 if (err < 0) { 747 /* -EPERM: urb is being killed; 748 * -ENODEV: device got disconnected */ 749 if (err != -EPERM && err != -ENODEV) 750 BT_ERR("%s urb %p failed to resubmit (%d)", 751 hdev->name, urb, -err); 752 usb_unanchor_urb(urb); 753 } 754 } 755 756 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags) 757 { 758 struct btusb_data *data = hci_get_drvdata(hdev); 759 struct urb *urb; 760 unsigned char *buf; 761 unsigned int pipe; 762 int err, size = HCI_MAX_FRAME_SIZE; 763 764 BT_DBG("%s", hdev->name); 765 766 if (!data->bulk_rx_ep) 767 return -ENODEV; 768 769 urb = usb_alloc_urb(0, mem_flags); 770 if (!urb) 771 return -ENOMEM; 772 773 buf = kmalloc(size, mem_flags); 774 if (!buf) { 775 usb_free_urb(urb); 776 return -ENOMEM; 777 } 778 779 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress); 780 781 usb_fill_bulk_urb(urb, data->udev, pipe, buf, size, 782 btusb_bulk_complete, hdev); 783 784 urb->transfer_flags |= URB_FREE_BUFFER; 785 786 usb_mark_last_busy(data->udev); 787 usb_anchor_urb(urb, &data->bulk_anchor); 788 789 err = usb_submit_urb(urb, mem_flags); 790 if (err < 0) { 791 if (err != -EPERM && err != -ENODEV) 792 BT_ERR("%s urb %p submission failed (%d)", 793 hdev->name, urb, -err); 794 usb_unanchor_urb(urb); 795 } 796 797 usb_free_urb(urb); 798 799 return err; 800 } 801 802 static void btusb_isoc_complete(struct urb *urb) 803 { 804 struct hci_dev *hdev = urb->context; 805 struct btusb_data *data = hci_get_drvdata(hdev); 806 int i, err; 807 808 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, 809 urb->actual_length); 810 811 if (!test_bit(HCI_RUNNING, &hdev->flags)) 812 return; 813 814 if (urb->status == 0) { 815 for (i = 0; i < urb->number_of_packets; i++) { 816 unsigned int offset = urb->iso_frame_desc[i].offset; 817 unsigned int length = urb->iso_frame_desc[i].actual_length; 818 819 if (urb->iso_frame_desc[i].status) 820 continue; 821 822 hdev->stat.byte_rx += length; 823 824 if (btusb_recv_isoc(data, urb->transfer_buffer + offset, 825 length) < 0) { 826 BT_ERR("%s corrupted SCO packet", hdev->name); 827 hdev->stat.err_rx++; 828 } 829 } 830 } else if (urb->status == -ENOENT) { 831 /* Avoid suspend failed when usb_kill_urb */ 832 return; 833 } 834 835 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags)) 836 return; 837 838 usb_anchor_urb(urb, &data->isoc_anchor); 839 840 err = usb_submit_urb(urb, GFP_ATOMIC); 841 if (err < 0) { 842 /* -EPERM: urb is being killed; 843 * -ENODEV: device got disconnected */ 844 if (err != -EPERM && err != -ENODEV) 845 BT_ERR("%s urb %p failed to resubmit (%d)", 846 hdev->name, urb, -err); 847 usb_unanchor_urb(urb); 848 } 849 } 850 851 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu) 852 { 853 int i, offset = 0; 854 855 BT_DBG("len %d mtu %d", len, mtu); 856 857 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu; 858 i++, offset += mtu, len -= mtu) { 859 urb->iso_frame_desc[i].offset = offset; 860 urb->iso_frame_desc[i].length = mtu; 861 } 862 863 if (len && i < BTUSB_MAX_ISOC_FRAMES) { 864 urb->iso_frame_desc[i].offset = offset; 865 urb->iso_frame_desc[i].length = len; 866 i++; 867 } 868 869 urb->number_of_packets = i; 870 } 871 872 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags) 873 { 874 struct btusb_data *data = hci_get_drvdata(hdev); 875 struct urb *urb; 876 unsigned char *buf; 877 unsigned int pipe; 878 int err, size; 879 880 BT_DBG("%s", hdev->name); 881 882 if (!data->isoc_rx_ep) 883 return -ENODEV; 884 885 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags); 886 if (!urb) 887 return -ENOMEM; 888 889 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) * 890 BTUSB_MAX_ISOC_FRAMES; 891 892 buf = kmalloc(size, mem_flags); 893 if (!buf) { 894 usb_free_urb(urb); 895 return -ENOMEM; 896 } 897 898 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress); 899 900 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete, 901 hdev, data->isoc_rx_ep->bInterval); 902 903 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP; 904 905 __fill_isoc_descriptor(urb, size, 906 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize)); 907 908 usb_anchor_urb(urb, &data->isoc_anchor); 909 910 err = usb_submit_urb(urb, mem_flags); 911 if (err < 0) { 912 if (err != -EPERM && err != -ENODEV) 913 BT_ERR("%s urb %p submission failed (%d)", 914 hdev->name, urb, -err); 915 usb_unanchor_urb(urb); 916 } 917 918 usb_free_urb(urb); 919 920 return err; 921 } 922 923 static void btusb_diag_complete(struct urb *urb) 924 { 925 struct hci_dev *hdev = urb->context; 926 struct btusb_data *data = hci_get_drvdata(hdev); 927 int err; 928 929 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, 930 urb->actual_length); 931 932 if (urb->status == 0) { 933 struct sk_buff *skb; 934 935 skb = bt_skb_alloc(urb->actual_length, GFP_ATOMIC); 936 if (skb) { 937 skb_put_data(skb, urb->transfer_buffer, 938 urb->actual_length); 939 hci_recv_diag(hdev, skb); 940 } 941 } else if (urb->status == -ENOENT) { 942 /* Avoid suspend failed when usb_kill_urb */ 943 return; 944 } 945 946 if (!test_bit(BTUSB_DIAG_RUNNING, &data->flags)) 947 return; 948 949 usb_anchor_urb(urb, &data->diag_anchor); 950 usb_mark_last_busy(data->udev); 951 952 err = usb_submit_urb(urb, GFP_ATOMIC); 953 if (err < 0) { 954 /* -EPERM: urb is being killed; 955 * -ENODEV: device got disconnected */ 956 if (err != -EPERM && err != -ENODEV) 957 BT_ERR("%s urb %p failed to resubmit (%d)", 958 hdev->name, urb, -err); 959 usb_unanchor_urb(urb); 960 } 961 } 962 963 static int btusb_submit_diag_urb(struct hci_dev *hdev, gfp_t mem_flags) 964 { 965 struct btusb_data *data = hci_get_drvdata(hdev); 966 struct urb *urb; 967 unsigned char *buf; 968 unsigned int pipe; 969 int err, size = HCI_MAX_FRAME_SIZE; 970 971 BT_DBG("%s", hdev->name); 972 973 if (!data->diag_rx_ep) 974 return -ENODEV; 975 976 urb = usb_alloc_urb(0, mem_flags); 977 if (!urb) 978 return -ENOMEM; 979 980 buf = kmalloc(size, mem_flags); 981 if (!buf) { 982 usb_free_urb(urb); 983 return -ENOMEM; 984 } 985 986 pipe = usb_rcvbulkpipe(data->udev, data->diag_rx_ep->bEndpointAddress); 987 988 usb_fill_bulk_urb(urb, data->udev, pipe, buf, size, 989 btusb_diag_complete, hdev); 990 991 urb->transfer_flags |= URB_FREE_BUFFER; 992 993 usb_mark_last_busy(data->udev); 994 usb_anchor_urb(urb, &data->diag_anchor); 995 996 err = usb_submit_urb(urb, mem_flags); 997 if (err < 0) { 998 if (err != -EPERM && err != -ENODEV) 999 BT_ERR("%s urb %p submission failed (%d)", 1000 hdev->name, urb, -err); 1001 usb_unanchor_urb(urb); 1002 } 1003 1004 usb_free_urb(urb); 1005 1006 return err; 1007 } 1008 1009 static void btusb_tx_complete(struct urb *urb) 1010 { 1011 struct sk_buff *skb = urb->context; 1012 struct hci_dev *hdev = (struct hci_dev *)skb->dev; 1013 struct btusb_data *data = hci_get_drvdata(hdev); 1014 1015 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, 1016 urb->actual_length); 1017 1018 if (!test_bit(HCI_RUNNING, &hdev->flags)) 1019 goto done; 1020 1021 if (!urb->status) 1022 hdev->stat.byte_tx += urb->transfer_buffer_length; 1023 else 1024 hdev->stat.err_tx++; 1025 1026 done: 1027 spin_lock(&data->txlock); 1028 data->tx_in_flight--; 1029 spin_unlock(&data->txlock); 1030 1031 kfree(urb->setup_packet); 1032 1033 kfree_skb(skb); 1034 } 1035 1036 static void btusb_isoc_tx_complete(struct urb *urb) 1037 { 1038 struct sk_buff *skb = urb->context; 1039 struct hci_dev *hdev = (struct hci_dev *)skb->dev; 1040 1041 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, 1042 urb->actual_length); 1043 1044 if (!test_bit(HCI_RUNNING, &hdev->flags)) 1045 goto done; 1046 1047 if (!urb->status) 1048 hdev->stat.byte_tx += urb->transfer_buffer_length; 1049 else 1050 hdev->stat.err_tx++; 1051 1052 done: 1053 kfree(urb->setup_packet); 1054 1055 kfree_skb(skb); 1056 } 1057 1058 static int btusb_open(struct hci_dev *hdev) 1059 { 1060 struct btusb_data *data = hci_get_drvdata(hdev); 1061 int err; 1062 1063 BT_DBG("%s", hdev->name); 1064 1065 err = usb_autopm_get_interface(data->intf); 1066 if (err < 0) 1067 return err; 1068 1069 /* Patching USB firmware files prior to starting any URBs of HCI path 1070 * It is more safe to use USB bulk channel for downloading USB patch 1071 */ 1072 if (data->setup_on_usb) { 1073 err = data->setup_on_usb(hdev); 1074 if (err < 0) 1075 return err; 1076 } 1077 1078 data->intf->needs_remote_wakeup = 1; 1079 1080 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags)) 1081 goto done; 1082 1083 err = btusb_submit_intr_urb(hdev, GFP_KERNEL); 1084 if (err < 0) 1085 goto failed; 1086 1087 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL); 1088 if (err < 0) { 1089 usb_kill_anchored_urbs(&data->intr_anchor); 1090 goto failed; 1091 } 1092 1093 set_bit(BTUSB_BULK_RUNNING, &data->flags); 1094 btusb_submit_bulk_urb(hdev, GFP_KERNEL); 1095 1096 if (data->diag) { 1097 if (!btusb_submit_diag_urb(hdev, GFP_KERNEL)) 1098 set_bit(BTUSB_DIAG_RUNNING, &data->flags); 1099 } 1100 1101 done: 1102 usb_autopm_put_interface(data->intf); 1103 return 0; 1104 1105 failed: 1106 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 1107 usb_autopm_put_interface(data->intf); 1108 return err; 1109 } 1110 1111 static void btusb_stop_traffic(struct btusb_data *data) 1112 { 1113 usb_kill_anchored_urbs(&data->intr_anchor); 1114 usb_kill_anchored_urbs(&data->bulk_anchor); 1115 usb_kill_anchored_urbs(&data->isoc_anchor); 1116 usb_kill_anchored_urbs(&data->diag_anchor); 1117 } 1118 1119 static int btusb_close(struct hci_dev *hdev) 1120 { 1121 struct btusb_data *data = hci_get_drvdata(hdev); 1122 int err; 1123 1124 BT_DBG("%s", hdev->name); 1125 1126 cancel_work_sync(&data->work); 1127 cancel_work_sync(&data->waker); 1128 1129 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1130 clear_bit(BTUSB_BULK_RUNNING, &data->flags); 1131 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 1132 clear_bit(BTUSB_DIAG_RUNNING, &data->flags); 1133 1134 btusb_stop_traffic(data); 1135 btusb_free_frags(data); 1136 1137 err = usb_autopm_get_interface(data->intf); 1138 if (err < 0) 1139 goto failed; 1140 1141 data->intf->needs_remote_wakeup = 0; 1142 usb_autopm_put_interface(data->intf); 1143 1144 failed: 1145 usb_scuttle_anchored_urbs(&data->deferred); 1146 return 0; 1147 } 1148 1149 static int btusb_flush(struct hci_dev *hdev) 1150 { 1151 struct btusb_data *data = hci_get_drvdata(hdev); 1152 1153 BT_DBG("%s", hdev->name); 1154 1155 usb_kill_anchored_urbs(&data->tx_anchor); 1156 btusb_free_frags(data); 1157 1158 return 0; 1159 } 1160 1161 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb) 1162 { 1163 struct btusb_data *data = hci_get_drvdata(hdev); 1164 struct usb_ctrlrequest *dr; 1165 struct urb *urb; 1166 unsigned int pipe; 1167 1168 urb = usb_alloc_urb(0, GFP_KERNEL); 1169 if (!urb) 1170 return ERR_PTR(-ENOMEM); 1171 1172 dr = kmalloc(sizeof(*dr), GFP_KERNEL); 1173 if (!dr) { 1174 usb_free_urb(urb); 1175 return ERR_PTR(-ENOMEM); 1176 } 1177 1178 dr->bRequestType = data->cmdreq_type; 1179 dr->bRequest = data->cmdreq; 1180 dr->wIndex = 0; 1181 dr->wValue = 0; 1182 dr->wLength = __cpu_to_le16(skb->len); 1183 1184 pipe = usb_sndctrlpipe(data->udev, 0x00); 1185 1186 usb_fill_control_urb(urb, data->udev, pipe, (void *)dr, 1187 skb->data, skb->len, btusb_tx_complete, skb); 1188 1189 skb->dev = (void *)hdev; 1190 1191 return urb; 1192 } 1193 1194 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb) 1195 { 1196 struct btusb_data *data = hci_get_drvdata(hdev); 1197 struct urb *urb; 1198 unsigned int pipe; 1199 1200 if (!data->bulk_tx_ep) 1201 return ERR_PTR(-ENODEV); 1202 1203 urb = usb_alloc_urb(0, GFP_KERNEL); 1204 if (!urb) 1205 return ERR_PTR(-ENOMEM); 1206 1207 pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress); 1208 1209 usb_fill_bulk_urb(urb, data->udev, pipe, 1210 skb->data, skb->len, btusb_tx_complete, skb); 1211 1212 skb->dev = (void *)hdev; 1213 1214 return urb; 1215 } 1216 1217 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb) 1218 { 1219 struct btusb_data *data = hci_get_drvdata(hdev); 1220 struct urb *urb; 1221 unsigned int pipe; 1222 1223 if (!data->isoc_tx_ep) 1224 return ERR_PTR(-ENODEV); 1225 1226 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL); 1227 if (!urb) 1228 return ERR_PTR(-ENOMEM); 1229 1230 pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress); 1231 1232 usb_fill_int_urb(urb, data->udev, pipe, 1233 skb->data, skb->len, btusb_isoc_tx_complete, 1234 skb, data->isoc_tx_ep->bInterval); 1235 1236 urb->transfer_flags = URB_ISO_ASAP; 1237 1238 __fill_isoc_descriptor(urb, skb->len, 1239 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize)); 1240 1241 skb->dev = (void *)hdev; 1242 1243 return urb; 1244 } 1245 1246 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb) 1247 { 1248 struct btusb_data *data = hci_get_drvdata(hdev); 1249 int err; 1250 1251 usb_anchor_urb(urb, &data->tx_anchor); 1252 1253 err = usb_submit_urb(urb, GFP_KERNEL); 1254 if (err < 0) { 1255 if (err != -EPERM && err != -ENODEV) 1256 BT_ERR("%s urb %p submission failed (%d)", 1257 hdev->name, urb, -err); 1258 kfree(urb->setup_packet); 1259 usb_unanchor_urb(urb); 1260 } else { 1261 usb_mark_last_busy(data->udev); 1262 } 1263 1264 usb_free_urb(urb); 1265 return err; 1266 } 1267 1268 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb) 1269 { 1270 struct btusb_data *data = hci_get_drvdata(hdev); 1271 unsigned long flags; 1272 bool suspending; 1273 1274 spin_lock_irqsave(&data->txlock, flags); 1275 suspending = test_bit(BTUSB_SUSPENDING, &data->flags); 1276 if (!suspending) 1277 data->tx_in_flight++; 1278 spin_unlock_irqrestore(&data->txlock, flags); 1279 1280 if (!suspending) 1281 return submit_tx_urb(hdev, urb); 1282 1283 usb_anchor_urb(urb, &data->deferred); 1284 schedule_work(&data->waker); 1285 1286 usb_free_urb(urb); 1287 return 0; 1288 } 1289 1290 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb) 1291 { 1292 struct urb *urb; 1293 1294 BT_DBG("%s", hdev->name); 1295 1296 switch (hci_skb_pkt_type(skb)) { 1297 case HCI_COMMAND_PKT: 1298 urb = alloc_ctrl_urb(hdev, skb); 1299 if (IS_ERR(urb)) 1300 return PTR_ERR(urb); 1301 1302 hdev->stat.cmd_tx++; 1303 return submit_or_queue_tx_urb(hdev, urb); 1304 1305 case HCI_ACLDATA_PKT: 1306 urb = alloc_bulk_urb(hdev, skb); 1307 if (IS_ERR(urb)) 1308 return PTR_ERR(urb); 1309 1310 hdev->stat.acl_tx++; 1311 return submit_or_queue_tx_urb(hdev, urb); 1312 1313 case HCI_SCODATA_PKT: 1314 if (hci_conn_num(hdev, SCO_LINK) < 1) 1315 return -ENODEV; 1316 1317 urb = alloc_isoc_urb(hdev, skb); 1318 if (IS_ERR(urb)) 1319 return PTR_ERR(urb); 1320 1321 hdev->stat.sco_tx++; 1322 return submit_tx_urb(hdev, urb); 1323 } 1324 1325 return -EILSEQ; 1326 } 1327 1328 static void btusb_notify(struct hci_dev *hdev, unsigned int evt) 1329 { 1330 struct btusb_data *data = hci_get_drvdata(hdev); 1331 1332 BT_DBG("%s evt %d", hdev->name, evt); 1333 1334 if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) { 1335 data->sco_num = hci_conn_num(hdev, SCO_LINK); 1336 schedule_work(&data->work); 1337 } 1338 } 1339 1340 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting) 1341 { 1342 struct btusb_data *data = hci_get_drvdata(hdev); 1343 struct usb_interface *intf = data->isoc; 1344 struct usb_endpoint_descriptor *ep_desc; 1345 int i, err; 1346 1347 if (!data->isoc) 1348 return -ENODEV; 1349 1350 err = usb_set_interface(data->udev, 1, altsetting); 1351 if (err < 0) { 1352 BT_ERR("%s setting interface failed (%d)", hdev->name, -err); 1353 return err; 1354 } 1355 1356 data->isoc_altsetting = altsetting; 1357 1358 data->isoc_tx_ep = NULL; 1359 data->isoc_rx_ep = NULL; 1360 1361 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { 1362 ep_desc = &intf->cur_altsetting->endpoint[i].desc; 1363 1364 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) { 1365 data->isoc_tx_ep = ep_desc; 1366 continue; 1367 } 1368 1369 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) { 1370 data->isoc_rx_ep = ep_desc; 1371 continue; 1372 } 1373 } 1374 1375 if (!data->isoc_tx_ep || !data->isoc_rx_ep) { 1376 BT_ERR("%s invalid SCO descriptors", hdev->name); 1377 return -ENODEV; 1378 } 1379 1380 return 0; 1381 } 1382 1383 static void btusb_work(struct work_struct *work) 1384 { 1385 struct btusb_data *data = container_of(work, struct btusb_data, work); 1386 struct hci_dev *hdev = data->hdev; 1387 int new_alts; 1388 int err; 1389 1390 if (data->sco_num > 0) { 1391 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) { 1392 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf); 1393 if (err < 0) { 1394 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1395 usb_kill_anchored_urbs(&data->isoc_anchor); 1396 return; 1397 } 1398 1399 set_bit(BTUSB_DID_ISO_RESUME, &data->flags); 1400 } 1401 1402 if (hdev->voice_setting & 0x0020) { 1403 static const int alts[3] = { 2, 4, 5 }; 1404 1405 new_alts = alts[data->sco_num - 1]; 1406 } else { 1407 new_alts = data->sco_num; 1408 } 1409 1410 if (data->isoc_altsetting != new_alts) { 1411 unsigned long flags; 1412 1413 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1414 usb_kill_anchored_urbs(&data->isoc_anchor); 1415 1416 /* When isochronous alternate setting needs to be 1417 * changed, because SCO connection has been added 1418 * or removed, a packet fragment may be left in the 1419 * reassembling state. This could lead to wrongly 1420 * assembled fragments. 1421 * 1422 * Clear outstanding fragment when selecting a new 1423 * alternate setting. 1424 */ 1425 spin_lock_irqsave(&data->rxlock, flags); 1426 kfree_skb(data->sco_skb); 1427 data->sco_skb = NULL; 1428 spin_unlock_irqrestore(&data->rxlock, flags); 1429 1430 if (__set_isoc_interface(hdev, new_alts) < 0) 1431 return; 1432 } 1433 1434 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) { 1435 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0) 1436 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1437 else 1438 btusb_submit_isoc_urb(hdev, GFP_KERNEL); 1439 } 1440 } else { 1441 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1442 usb_kill_anchored_urbs(&data->isoc_anchor); 1443 1444 __set_isoc_interface(hdev, 0); 1445 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags)) 1446 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf); 1447 } 1448 } 1449 1450 static void btusb_waker(struct work_struct *work) 1451 { 1452 struct btusb_data *data = container_of(work, struct btusb_data, waker); 1453 int err; 1454 1455 err = usb_autopm_get_interface(data->intf); 1456 if (err < 0) 1457 return; 1458 1459 usb_autopm_put_interface(data->intf); 1460 } 1461 1462 static int btusb_setup_bcm92035(struct hci_dev *hdev) 1463 { 1464 struct sk_buff *skb; 1465 u8 val = 0x00; 1466 1467 BT_DBG("%s", hdev->name); 1468 1469 skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT); 1470 if (IS_ERR(skb)) 1471 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb)); 1472 else 1473 kfree_skb(skb); 1474 1475 return 0; 1476 } 1477 1478 static int btusb_setup_csr(struct hci_dev *hdev) 1479 { 1480 struct hci_rp_read_local_version *rp; 1481 struct sk_buff *skb; 1482 1483 BT_DBG("%s", hdev->name); 1484 1485 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL, 1486 HCI_INIT_TIMEOUT); 1487 if (IS_ERR(skb)) { 1488 int err = PTR_ERR(skb); 1489 BT_ERR("%s: CSR: Local version failed (%d)", hdev->name, err); 1490 return err; 1491 } 1492 1493 if (skb->len != sizeof(struct hci_rp_read_local_version)) { 1494 BT_ERR("%s: CSR: Local version length mismatch", hdev->name); 1495 kfree_skb(skb); 1496 return -EIO; 1497 } 1498 1499 rp = (struct hci_rp_read_local_version *)skb->data; 1500 1501 /* Detect controllers which aren't real CSR ones. */ 1502 if (le16_to_cpu(rp->manufacturer) != 10 || 1503 le16_to_cpu(rp->lmp_subver) == 0x0c5c) { 1504 /* Clear the reset quirk since this is not an actual 1505 * early Bluetooth 1.1 device from CSR. 1506 */ 1507 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); 1508 1509 /* These fake CSR controllers have all a broken 1510 * stored link key handling and so just disable it. 1511 */ 1512 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks); 1513 } 1514 1515 kfree_skb(skb); 1516 1517 return 0; 1518 } 1519 1520 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev, 1521 struct intel_version *ver) 1522 { 1523 const struct firmware *fw; 1524 char fwname[64]; 1525 int ret; 1526 1527 snprintf(fwname, sizeof(fwname), 1528 "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq", 1529 ver->hw_platform, ver->hw_variant, ver->hw_revision, 1530 ver->fw_variant, ver->fw_revision, ver->fw_build_num, 1531 ver->fw_build_ww, ver->fw_build_yy); 1532 1533 ret = request_firmware(&fw, fwname, &hdev->dev); 1534 if (ret < 0) { 1535 if (ret == -EINVAL) { 1536 BT_ERR("%s Intel firmware file request failed (%d)", 1537 hdev->name, ret); 1538 return NULL; 1539 } 1540 1541 BT_ERR("%s failed to open Intel firmware file: %s(%d)", 1542 hdev->name, fwname, ret); 1543 1544 /* If the correct firmware patch file is not found, use the 1545 * default firmware patch file instead 1546 */ 1547 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq", 1548 ver->hw_platform, ver->hw_variant); 1549 if (request_firmware(&fw, fwname, &hdev->dev) < 0) { 1550 BT_ERR("%s failed to open default Intel fw file: %s", 1551 hdev->name, fwname); 1552 return NULL; 1553 } 1554 } 1555 1556 BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname); 1557 1558 return fw; 1559 } 1560 1561 static int btusb_setup_intel_patching(struct hci_dev *hdev, 1562 const struct firmware *fw, 1563 const u8 **fw_ptr, int *disable_patch) 1564 { 1565 struct sk_buff *skb; 1566 struct hci_command_hdr *cmd; 1567 const u8 *cmd_param; 1568 struct hci_event_hdr *evt = NULL; 1569 const u8 *evt_param = NULL; 1570 int remain = fw->size - (*fw_ptr - fw->data); 1571 1572 /* The first byte indicates the types of the patch command or event. 1573 * 0x01 means HCI command and 0x02 is HCI event. If the first bytes 1574 * in the current firmware buffer doesn't start with 0x01 or 1575 * the size of remain buffer is smaller than HCI command header, 1576 * the firmware file is corrupted and it should stop the patching 1577 * process. 1578 */ 1579 if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) { 1580 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name); 1581 return -EINVAL; 1582 } 1583 (*fw_ptr)++; 1584 remain--; 1585 1586 cmd = (struct hci_command_hdr *)(*fw_ptr); 1587 *fw_ptr += sizeof(*cmd); 1588 remain -= sizeof(*cmd); 1589 1590 /* Ensure that the remain firmware data is long enough than the length 1591 * of command parameter. If not, the firmware file is corrupted. 1592 */ 1593 if (remain < cmd->plen) { 1594 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name); 1595 return -EFAULT; 1596 } 1597 1598 /* If there is a command that loads a patch in the firmware 1599 * file, then enable the patch upon success, otherwise just 1600 * disable the manufacturer mode, for example patch activation 1601 * is not required when the default firmware patch file is used 1602 * because there are no patch data to load. 1603 */ 1604 if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e) 1605 *disable_patch = 0; 1606 1607 cmd_param = *fw_ptr; 1608 *fw_ptr += cmd->plen; 1609 remain -= cmd->plen; 1610 1611 /* This reads the expected events when the above command is sent to the 1612 * device. Some vendor commands expects more than one events, for 1613 * example command status event followed by vendor specific event. 1614 * For this case, it only keeps the last expected event. so the command 1615 * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of 1616 * last expected event. 1617 */ 1618 while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) { 1619 (*fw_ptr)++; 1620 remain--; 1621 1622 evt = (struct hci_event_hdr *)(*fw_ptr); 1623 *fw_ptr += sizeof(*evt); 1624 remain -= sizeof(*evt); 1625 1626 if (remain < evt->plen) { 1627 BT_ERR("%s Intel fw corrupted: invalid evt len", 1628 hdev->name); 1629 return -EFAULT; 1630 } 1631 1632 evt_param = *fw_ptr; 1633 *fw_ptr += evt->plen; 1634 remain -= evt->plen; 1635 } 1636 1637 /* Every HCI commands in the firmware file has its correspond event. 1638 * If event is not found or remain is smaller than zero, the firmware 1639 * file is corrupted. 1640 */ 1641 if (!evt || !evt_param || remain < 0) { 1642 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name); 1643 return -EFAULT; 1644 } 1645 1646 skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen, 1647 cmd_param, evt->evt, HCI_INIT_TIMEOUT); 1648 if (IS_ERR(skb)) { 1649 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)", 1650 hdev->name, cmd->opcode, PTR_ERR(skb)); 1651 return PTR_ERR(skb); 1652 } 1653 1654 /* It ensures that the returned event matches the event data read from 1655 * the firmware file. At fist, it checks the length and then 1656 * the contents of the event. 1657 */ 1658 if (skb->len != evt->plen) { 1659 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name, 1660 le16_to_cpu(cmd->opcode)); 1661 kfree_skb(skb); 1662 return -EFAULT; 1663 } 1664 1665 if (memcmp(skb->data, evt_param, evt->plen)) { 1666 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)", 1667 hdev->name, le16_to_cpu(cmd->opcode)); 1668 kfree_skb(skb); 1669 return -EFAULT; 1670 } 1671 kfree_skb(skb); 1672 1673 return 0; 1674 } 1675 1676 static int btusb_setup_intel(struct hci_dev *hdev) 1677 { 1678 struct sk_buff *skb; 1679 const struct firmware *fw; 1680 const u8 *fw_ptr; 1681 int disable_patch, err; 1682 struct intel_version ver; 1683 1684 BT_DBG("%s", hdev->name); 1685 1686 /* The controller has a bug with the first HCI command sent to it 1687 * returning number of completed commands as zero. This would stall the 1688 * command processing in the Bluetooth core. 1689 * 1690 * As a workaround, send HCI Reset command first which will reset the 1691 * number of completed commands and allow normal command processing 1692 * from now on. 1693 */ 1694 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT); 1695 if (IS_ERR(skb)) { 1696 BT_ERR("%s sending initial HCI reset command failed (%ld)", 1697 hdev->name, PTR_ERR(skb)); 1698 return PTR_ERR(skb); 1699 } 1700 kfree_skb(skb); 1701 1702 /* Read Intel specific controller version first to allow selection of 1703 * which firmware file to load. 1704 * 1705 * The returned information are hardware variant and revision plus 1706 * firmware variant, revision and build number. 1707 */ 1708 err = btintel_read_version(hdev, &ver); 1709 if (err) 1710 return err; 1711 1712 BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x", 1713 hdev->name, ver.hw_platform, ver.hw_variant, ver.hw_revision, 1714 ver.fw_variant, ver.fw_revision, ver.fw_build_num, 1715 ver.fw_build_ww, ver.fw_build_yy, ver.fw_patch_num); 1716 1717 /* fw_patch_num indicates the version of patch the device currently 1718 * have. If there is no patch data in the device, it is always 0x00. 1719 * So, if it is other than 0x00, no need to patch the device again. 1720 */ 1721 if (ver.fw_patch_num) { 1722 BT_INFO("%s: Intel device is already patched. patch num: %02x", 1723 hdev->name, ver.fw_patch_num); 1724 goto complete; 1725 } 1726 1727 /* Opens the firmware patch file based on the firmware version read 1728 * from the controller. If it fails to open the matching firmware 1729 * patch file, it tries to open the default firmware patch file. 1730 * If no patch file is found, allow the device to operate without 1731 * a patch. 1732 */ 1733 fw = btusb_setup_intel_get_fw(hdev, &ver); 1734 if (!fw) 1735 goto complete; 1736 fw_ptr = fw->data; 1737 1738 /* Enable the manufacturer mode of the controller. 1739 * Only while this mode is enabled, the driver can download the 1740 * firmware patch data and configuration parameters. 1741 */ 1742 err = btintel_enter_mfg(hdev); 1743 if (err) { 1744 release_firmware(fw); 1745 return err; 1746 } 1747 1748 disable_patch = 1; 1749 1750 /* The firmware data file consists of list of Intel specific HCI 1751 * commands and its expected events. The first byte indicates the 1752 * type of the message, either HCI command or HCI event. 1753 * 1754 * It reads the command and its expected event from the firmware file, 1755 * and send to the controller. Once __hci_cmd_sync_ev() returns, 1756 * the returned event is compared with the event read from the firmware 1757 * file and it will continue until all the messages are downloaded to 1758 * the controller. 1759 * 1760 * Once the firmware patching is completed successfully, 1761 * the manufacturer mode is disabled with reset and activating the 1762 * downloaded patch. 1763 * 1764 * If the firmware patching fails, the manufacturer mode is 1765 * disabled with reset and deactivating the patch. 1766 * 1767 * If the default patch file is used, no reset is done when disabling 1768 * the manufacturer. 1769 */ 1770 while (fw->size > fw_ptr - fw->data) { 1771 int ret; 1772 1773 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr, 1774 &disable_patch); 1775 if (ret < 0) 1776 goto exit_mfg_deactivate; 1777 } 1778 1779 release_firmware(fw); 1780 1781 if (disable_patch) 1782 goto exit_mfg_disable; 1783 1784 /* Patching completed successfully and disable the manufacturer mode 1785 * with reset and activate the downloaded firmware patches. 1786 */ 1787 err = btintel_exit_mfg(hdev, true, true); 1788 if (err) 1789 return err; 1790 1791 BT_INFO("%s: Intel Bluetooth firmware patch completed and activated", 1792 hdev->name); 1793 1794 goto complete; 1795 1796 exit_mfg_disable: 1797 /* Disable the manufacturer mode without reset */ 1798 err = btintel_exit_mfg(hdev, false, false); 1799 if (err) 1800 return err; 1801 1802 BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name); 1803 1804 goto complete; 1805 1806 exit_mfg_deactivate: 1807 release_firmware(fw); 1808 1809 /* Patching failed. Disable the manufacturer mode with reset and 1810 * deactivate the downloaded firmware patches. 1811 */ 1812 err = btintel_exit_mfg(hdev, true, false); 1813 if (err) 1814 return err; 1815 1816 BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated", 1817 hdev->name); 1818 1819 complete: 1820 /* Set the event mask for Intel specific vendor events. This enables 1821 * a few extra events that are useful during general operation. 1822 */ 1823 btintel_set_event_mask_mfg(hdev, false); 1824 1825 btintel_check_bdaddr(hdev); 1826 return 0; 1827 } 1828 1829 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode) 1830 { 1831 struct sk_buff *skb; 1832 struct hci_event_hdr *hdr; 1833 struct hci_ev_cmd_complete *evt; 1834 1835 skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_ATOMIC); 1836 if (!skb) 1837 return -ENOMEM; 1838 1839 hdr = skb_put(skb, sizeof(*hdr)); 1840 hdr->evt = HCI_EV_CMD_COMPLETE; 1841 hdr->plen = sizeof(*evt) + 1; 1842 1843 evt = skb_put(skb, sizeof(*evt)); 1844 evt->ncmd = 0x01; 1845 evt->opcode = cpu_to_le16(opcode); 1846 1847 skb_put_u8(skb, 0x00); 1848 1849 hci_skb_pkt_type(skb) = HCI_EVENT_PKT; 1850 1851 return hci_recv_frame(hdev, skb); 1852 } 1853 1854 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer, 1855 int count) 1856 { 1857 /* When the device is in bootloader mode, then it can send 1858 * events via the bulk endpoint. These events are treated the 1859 * same way as the ones received from the interrupt endpoint. 1860 */ 1861 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) 1862 return btusb_recv_intr(data, buffer, count); 1863 1864 return btusb_recv_bulk(data, buffer, count); 1865 } 1866 1867 static void btusb_intel_bootup(struct btusb_data *data, const void *ptr, 1868 unsigned int len) 1869 { 1870 const struct intel_bootup *evt = ptr; 1871 1872 if (len != sizeof(*evt)) 1873 return; 1874 1875 if (test_and_clear_bit(BTUSB_BOOTING, &data->flags)) { 1876 smp_mb__after_atomic(); 1877 wake_up_bit(&data->flags, BTUSB_BOOTING); 1878 } 1879 } 1880 1881 static void btusb_intel_secure_send_result(struct btusb_data *data, 1882 const void *ptr, unsigned int len) 1883 { 1884 const struct intel_secure_send_result *evt = ptr; 1885 1886 if (len != sizeof(*evt)) 1887 return; 1888 1889 if (evt->result) 1890 set_bit(BTUSB_FIRMWARE_FAILED, &data->flags); 1891 1892 if (test_and_clear_bit(BTUSB_DOWNLOADING, &data->flags) && 1893 test_bit(BTUSB_FIRMWARE_LOADED, &data->flags)) { 1894 smp_mb__after_atomic(); 1895 wake_up_bit(&data->flags, BTUSB_DOWNLOADING); 1896 } 1897 } 1898 1899 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb) 1900 { 1901 struct btusb_data *data = hci_get_drvdata(hdev); 1902 1903 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) { 1904 struct hci_event_hdr *hdr = (void *)skb->data; 1905 1906 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff && 1907 hdr->plen > 0) { 1908 const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1; 1909 unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1; 1910 1911 switch (skb->data[2]) { 1912 case 0x02: 1913 /* When switching to the operational firmware 1914 * the device sends a vendor specific event 1915 * indicating that the bootup completed. 1916 */ 1917 btusb_intel_bootup(data, ptr, len); 1918 break; 1919 case 0x06: 1920 /* When the firmware loading completes the 1921 * device sends out a vendor specific event 1922 * indicating the result of the firmware 1923 * loading. 1924 */ 1925 btusb_intel_secure_send_result(data, ptr, len); 1926 break; 1927 } 1928 } 1929 } 1930 1931 return hci_recv_frame(hdev, skb); 1932 } 1933 1934 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb) 1935 { 1936 struct btusb_data *data = hci_get_drvdata(hdev); 1937 struct urb *urb; 1938 1939 BT_DBG("%s", hdev->name); 1940 1941 switch (hci_skb_pkt_type(skb)) { 1942 case HCI_COMMAND_PKT: 1943 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) { 1944 struct hci_command_hdr *cmd = (void *)skb->data; 1945 __u16 opcode = le16_to_cpu(cmd->opcode); 1946 1947 /* When in bootloader mode and the command 0xfc09 1948 * is received, it needs to be send down the 1949 * bulk endpoint. So allocate a bulk URB instead. 1950 */ 1951 if (opcode == 0xfc09) 1952 urb = alloc_bulk_urb(hdev, skb); 1953 else 1954 urb = alloc_ctrl_urb(hdev, skb); 1955 1956 /* When the 0xfc01 command is issued to boot into 1957 * the operational firmware, it will actually not 1958 * send a command complete event. To keep the flow 1959 * control working inject that event here. 1960 */ 1961 if (opcode == 0xfc01) 1962 inject_cmd_complete(hdev, opcode); 1963 } else { 1964 urb = alloc_ctrl_urb(hdev, skb); 1965 } 1966 if (IS_ERR(urb)) 1967 return PTR_ERR(urb); 1968 1969 hdev->stat.cmd_tx++; 1970 return submit_or_queue_tx_urb(hdev, urb); 1971 1972 case HCI_ACLDATA_PKT: 1973 urb = alloc_bulk_urb(hdev, skb); 1974 if (IS_ERR(urb)) 1975 return PTR_ERR(urb); 1976 1977 hdev->stat.acl_tx++; 1978 return submit_or_queue_tx_urb(hdev, urb); 1979 1980 case HCI_SCODATA_PKT: 1981 if (hci_conn_num(hdev, SCO_LINK) < 1) 1982 return -ENODEV; 1983 1984 urb = alloc_isoc_urb(hdev, skb); 1985 if (IS_ERR(urb)) 1986 return PTR_ERR(urb); 1987 1988 hdev->stat.sco_tx++; 1989 return submit_tx_urb(hdev, urb); 1990 } 1991 1992 return -EILSEQ; 1993 } 1994 1995 static int btusb_setup_intel_new(struct hci_dev *hdev) 1996 { 1997 static const u8 reset_param[] = { 0x00, 0x01, 0x00, 0x01, 1998 0x00, 0x08, 0x04, 0x00 }; 1999 struct btusb_data *data = hci_get_drvdata(hdev); 2000 struct sk_buff *skb; 2001 struct intel_version ver; 2002 struct intel_boot_params *params; 2003 const struct firmware *fw; 2004 const u8 *fw_ptr; 2005 u32 frag_len; 2006 char fwname[64]; 2007 ktime_t calltime, delta, rettime; 2008 unsigned long long duration; 2009 int err; 2010 2011 BT_DBG("%s", hdev->name); 2012 2013 calltime = ktime_get(); 2014 2015 /* Read the Intel version information to determine if the device 2016 * is in bootloader mode or if it already has operational firmware 2017 * loaded. 2018 */ 2019 err = btintel_read_version(hdev, &ver); 2020 if (err) 2021 return err; 2022 2023 /* The hardware platform number has a fixed value of 0x37 and 2024 * for now only accept this single value. 2025 */ 2026 if (ver.hw_platform != 0x37) { 2027 BT_ERR("%s: Unsupported Intel hardware platform (%u)", 2028 hdev->name, ver.hw_platform); 2029 return -EINVAL; 2030 } 2031 2032 /* Check for supported iBT hardware variants of this firmware 2033 * loading method. 2034 * 2035 * This check has been put in place to ensure correct forward 2036 * compatibility options when newer hardware variants come along. 2037 */ 2038 switch (ver.hw_variant) { 2039 case 0x0b: /* SfP */ 2040 case 0x0c: /* WsP */ 2041 case 0x11: /* JfP */ 2042 case 0x12: /* ThP */ 2043 break; 2044 default: 2045 BT_ERR("%s: Unsupported Intel hardware variant (%u)", 2046 hdev->name, ver.hw_variant); 2047 return -EINVAL; 2048 } 2049 2050 btintel_version_info(hdev, &ver); 2051 2052 /* The firmware variant determines if the device is in bootloader 2053 * mode or is running operational firmware. The value 0x06 identifies 2054 * the bootloader and the value 0x23 identifies the operational 2055 * firmware. 2056 * 2057 * When the operational firmware is already present, then only 2058 * the check for valid Bluetooth device address is needed. This 2059 * determines if the device will be added as configured or 2060 * unconfigured controller. 2061 * 2062 * It is not possible to use the Secure Boot Parameters in this 2063 * case since that command is only available in bootloader mode. 2064 */ 2065 if (ver.fw_variant == 0x23) { 2066 clear_bit(BTUSB_BOOTLOADER, &data->flags); 2067 btintel_check_bdaddr(hdev); 2068 return 0; 2069 } 2070 2071 /* If the device is not in bootloader mode, then the only possible 2072 * choice is to return an error and abort the device initialization. 2073 */ 2074 if (ver.fw_variant != 0x06) { 2075 BT_ERR("%s: Unsupported Intel firmware variant (%u)", 2076 hdev->name, ver.fw_variant); 2077 return -ENODEV; 2078 } 2079 2080 /* Read the secure boot parameters to identify the operating 2081 * details of the bootloader. 2082 */ 2083 skb = __hci_cmd_sync(hdev, 0xfc0d, 0, NULL, HCI_INIT_TIMEOUT); 2084 if (IS_ERR(skb)) { 2085 BT_ERR("%s: Reading Intel boot parameters failed (%ld)", 2086 hdev->name, PTR_ERR(skb)); 2087 return PTR_ERR(skb); 2088 } 2089 2090 if (skb->len != sizeof(*params)) { 2091 BT_ERR("%s: Intel boot parameters size mismatch", hdev->name); 2092 kfree_skb(skb); 2093 return -EILSEQ; 2094 } 2095 2096 params = (struct intel_boot_params *)skb->data; 2097 2098 BT_INFO("%s: Device revision is %u", hdev->name, 2099 le16_to_cpu(params->dev_revid)); 2100 2101 BT_INFO("%s: Secure boot is %s", hdev->name, 2102 params->secure_boot ? "enabled" : "disabled"); 2103 2104 BT_INFO("%s: OTP lock is %s", hdev->name, 2105 params->otp_lock ? "enabled" : "disabled"); 2106 2107 BT_INFO("%s: API lock is %s", hdev->name, 2108 params->api_lock ? "enabled" : "disabled"); 2109 2110 BT_INFO("%s: Debug lock is %s", hdev->name, 2111 params->debug_lock ? "enabled" : "disabled"); 2112 2113 BT_INFO("%s: Minimum firmware build %u week %u %u", hdev->name, 2114 params->min_fw_build_nn, params->min_fw_build_cw, 2115 2000 + params->min_fw_build_yy); 2116 2117 /* It is required that every single firmware fragment is acknowledged 2118 * with a command complete event. If the boot parameters indicate 2119 * that this bootloader does not send them, then abort the setup. 2120 */ 2121 if (params->limited_cce != 0x00) { 2122 BT_ERR("%s: Unsupported Intel firmware loading method (%u)", 2123 hdev->name, params->limited_cce); 2124 kfree_skb(skb); 2125 return -EINVAL; 2126 } 2127 2128 /* If the OTP has no valid Bluetooth device address, then there will 2129 * also be no valid address for the operational firmware. 2130 */ 2131 if (!bacmp(¶ms->otp_bdaddr, BDADDR_ANY)) { 2132 BT_INFO("%s: No device address configured", hdev->name); 2133 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks); 2134 } 2135 2136 /* With this Intel bootloader only the hardware variant and device 2137 * revision information are used to select the right firmware. 2138 * 2139 * The firmware filename is ibt-<hw_variant>-<dev_revid>.sfi. 2140 * 2141 * Currently the supported hardware variants are: 2142 * 11 (0x0b) for iBT3.0 (LnP/SfP) 2143 * 12 (0x0c) for iBT3.5 (WsP) 2144 * 17 (0x11) for iBT3.5 (JfP) 2145 * 18 (0x12) for iBT3.5 (ThP) 2146 */ 2147 snprintf(fwname, sizeof(fwname), "intel/ibt-%u-%u.sfi", 2148 le16_to_cpu(ver.hw_variant), 2149 le16_to_cpu(params->dev_revid)); 2150 2151 err = request_firmware(&fw, fwname, &hdev->dev); 2152 if (err < 0) { 2153 BT_ERR("%s: Failed to load Intel firmware file (%d)", 2154 hdev->name, err); 2155 kfree_skb(skb); 2156 return err; 2157 } 2158 2159 BT_INFO("%s: Found device firmware: %s", hdev->name, fwname); 2160 2161 /* Save the DDC file name for later use to apply once the firmware 2162 * downloading is done. 2163 */ 2164 snprintf(fwname, sizeof(fwname), "intel/ibt-%u-%u.ddc", 2165 le16_to_cpu(ver.hw_variant), 2166 le16_to_cpu(params->dev_revid)); 2167 2168 kfree_skb(skb); 2169 2170 if (fw->size < 644) { 2171 BT_ERR("%s: Invalid size of firmware file (%zu)", 2172 hdev->name, fw->size); 2173 err = -EBADF; 2174 goto done; 2175 } 2176 2177 set_bit(BTUSB_DOWNLOADING, &data->flags); 2178 2179 /* Start the firmware download transaction with the Init fragment 2180 * represented by the 128 bytes of CSS header. 2181 */ 2182 err = btintel_secure_send(hdev, 0x00, 128, fw->data); 2183 if (err < 0) { 2184 BT_ERR("%s: Failed to send firmware header (%d)", 2185 hdev->name, err); 2186 goto done; 2187 } 2188 2189 /* Send the 256 bytes of public key information from the firmware 2190 * as the PKey fragment. 2191 */ 2192 err = btintel_secure_send(hdev, 0x03, 256, fw->data + 128); 2193 if (err < 0) { 2194 BT_ERR("%s: Failed to send firmware public key (%d)", 2195 hdev->name, err); 2196 goto done; 2197 } 2198 2199 /* Send the 256 bytes of signature information from the firmware 2200 * as the Sign fragment. 2201 */ 2202 err = btintel_secure_send(hdev, 0x02, 256, fw->data + 388); 2203 if (err < 0) { 2204 BT_ERR("%s: Failed to send firmware signature (%d)", 2205 hdev->name, err); 2206 goto done; 2207 } 2208 2209 fw_ptr = fw->data + 644; 2210 frag_len = 0; 2211 2212 while (fw_ptr - fw->data < fw->size) { 2213 struct hci_command_hdr *cmd = (void *)(fw_ptr + frag_len); 2214 2215 frag_len += sizeof(*cmd) + cmd->plen; 2216 2217 /* The parameter length of the secure send command requires 2218 * a 4 byte alignment. It happens so that the firmware file 2219 * contains proper Intel_NOP commands to align the fragments 2220 * as needed. 2221 * 2222 * Send set of commands with 4 byte alignment from the 2223 * firmware data buffer as a single Data fragement. 2224 */ 2225 if (!(frag_len % 4)) { 2226 err = btintel_secure_send(hdev, 0x01, frag_len, fw_ptr); 2227 if (err < 0) { 2228 BT_ERR("%s: Failed to send firmware data (%d)", 2229 hdev->name, err); 2230 goto done; 2231 } 2232 2233 fw_ptr += frag_len; 2234 frag_len = 0; 2235 } 2236 } 2237 2238 set_bit(BTUSB_FIRMWARE_LOADED, &data->flags); 2239 2240 BT_INFO("%s: Waiting for firmware download to complete", hdev->name); 2241 2242 /* Before switching the device into operational mode and with that 2243 * booting the loaded firmware, wait for the bootloader notification 2244 * that all fragments have been successfully received. 2245 * 2246 * When the event processing receives the notification, then the 2247 * BTUSB_DOWNLOADING flag will be cleared. 2248 * 2249 * The firmware loading should not take longer than 5 seconds 2250 * and thus just timeout if that happens and fail the setup 2251 * of this device. 2252 */ 2253 err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING, 2254 TASK_INTERRUPTIBLE, 2255 msecs_to_jiffies(5000)); 2256 if (err == -EINTR) { 2257 BT_ERR("%s: Firmware loading interrupted", hdev->name); 2258 goto done; 2259 } 2260 2261 if (err) { 2262 BT_ERR("%s: Firmware loading timeout", hdev->name); 2263 err = -ETIMEDOUT; 2264 goto done; 2265 } 2266 2267 if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) { 2268 BT_ERR("%s: Firmware loading failed", hdev->name); 2269 err = -ENOEXEC; 2270 goto done; 2271 } 2272 2273 rettime = ktime_get(); 2274 delta = ktime_sub(rettime, calltime); 2275 duration = (unsigned long long) ktime_to_ns(delta) >> 10; 2276 2277 BT_INFO("%s: Firmware loaded in %llu usecs", hdev->name, duration); 2278 2279 done: 2280 release_firmware(fw); 2281 2282 if (err < 0) 2283 return err; 2284 2285 calltime = ktime_get(); 2286 2287 set_bit(BTUSB_BOOTING, &data->flags); 2288 2289 skb = __hci_cmd_sync(hdev, 0xfc01, sizeof(reset_param), reset_param, 2290 HCI_INIT_TIMEOUT); 2291 if (IS_ERR(skb)) 2292 return PTR_ERR(skb); 2293 2294 kfree_skb(skb); 2295 2296 /* The bootloader will not indicate when the device is ready. This 2297 * is done by the operational firmware sending bootup notification. 2298 * 2299 * Booting into operational firmware should not take longer than 2300 * 1 second. However if that happens, then just fail the setup 2301 * since something went wrong. 2302 */ 2303 BT_INFO("%s: Waiting for device to boot", hdev->name); 2304 2305 err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING, 2306 TASK_INTERRUPTIBLE, 2307 msecs_to_jiffies(1000)); 2308 2309 if (err == -EINTR) { 2310 BT_ERR("%s: Device boot interrupted", hdev->name); 2311 return -EINTR; 2312 } 2313 2314 if (err) { 2315 BT_ERR("%s: Device boot timeout", hdev->name); 2316 return -ETIMEDOUT; 2317 } 2318 2319 rettime = ktime_get(); 2320 delta = ktime_sub(rettime, calltime); 2321 duration = (unsigned long long) ktime_to_ns(delta) >> 10; 2322 2323 BT_INFO("%s: Device booted in %llu usecs", hdev->name, duration); 2324 2325 clear_bit(BTUSB_BOOTLOADER, &data->flags); 2326 2327 /* Once the device is running in operational mode, it needs to apply 2328 * the device configuration (DDC) parameters. 2329 * 2330 * The device can work without DDC parameters, so even if it fails 2331 * to load the file, no need to fail the setup. 2332 */ 2333 btintel_load_ddc_config(hdev, fwname); 2334 2335 /* Set the event mask for Intel specific vendor events. This enables 2336 * a few extra events that are useful during general operation. It 2337 * does not enable any debugging related events. 2338 * 2339 * The device will function correctly without these events enabled 2340 * and thus no need to fail the setup. 2341 */ 2342 btintel_set_event_mask(hdev, false); 2343 2344 return 0; 2345 } 2346 2347 static int btusb_shutdown_intel(struct hci_dev *hdev) 2348 { 2349 struct sk_buff *skb; 2350 long ret; 2351 2352 /* Some platforms have an issue with BT LED when the interface is 2353 * down or BT radio is turned off, which takes 5 seconds to BT LED 2354 * goes off. This command turns off the BT LED immediately. 2355 */ 2356 skb = __hci_cmd_sync(hdev, 0xfc3f, 0, NULL, HCI_INIT_TIMEOUT); 2357 if (IS_ERR(skb)) { 2358 ret = PTR_ERR(skb); 2359 BT_ERR("%s: turning off Intel device LED failed (%ld)", 2360 hdev->name, ret); 2361 return ret; 2362 } 2363 kfree_skb(skb); 2364 2365 return 0; 2366 } 2367 2368 #ifdef CONFIG_PM 2369 /* Configure an out-of-band gpio as wake-up pin, if specified in device tree */ 2370 static int marvell_config_oob_wake(struct hci_dev *hdev) 2371 { 2372 struct sk_buff *skb; 2373 struct btusb_data *data = hci_get_drvdata(hdev); 2374 struct device *dev = &data->udev->dev; 2375 u16 pin, gap, opcode; 2376 int ret; 2377 u8 cmd[5]; 2378 2379 /* Move on if no wakeup pin specified */ 2380 if (of_property_read_u16(dev->of_node, "marvell,wakeup-pin", &pin) || 2381 of_property_read_u16(dev->of_node, "marvell,wakeup-gap-ms", &gap)) 2382 return 0; 2383 2384 /* Vendor specific command to configure a GPIO as wake-up pin */ 2385 opcode = hci_opcode_pack(0x3F, 0x59); 2386 cmd[0] = opcode & 0xFF; 2387 cmd[1] = opcode >> 8; 2388 cmd[2] = 2; /* length of parameters that follow */ 2389 cmd[3] = pin; 2390 cmd[4] = gap; /* time in ms, for which wakeup pin should be asserted */ 2391 2392 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL); 2393 if (!skb) { 2394 bt_dev_err(hdev, "%s: No memory\n", __func__); 2395 return -ENOMEM; 2396 } 2397 2398 skb_put_data(skb, cmd, sizeof(cmd)); 2399 hci_skb_pkt_type(skb) = HCI_COMMAND_PKT; 2400 2401 ret = btusb_send_frame(hdev, skb); 2402 if (ret) { 2403 bt_dev_err(hdev, "%s: configuration failed\n", __func__); 2404 kfree_skb(skb); 2405 return ret; 2406 } 2407 2408 return 0; 2409 } 2410 #endif 2411 2412 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev, 2413 const bdaddr_t *bdaddr) 2414 { 2415 struct sk_buff *skb; 2416 u8 buf[8]; 2417 long ret; 2418 2419 buf[0] = 0xfe; 2420 buf[1] = sizeof(bdaddr_t); 2421 memcpy(buf + 2, bdaddr, sizeof(bdaddr_t)); 2422 2423 skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT); 2424 if (IS_ERR(skb)) { 2425 ret = PTR_ERR(skb); 2426 BT_ERR("%s: changing Marvell device address failed (%ld)", 2427 hdev->name, ret); 2428 return ret; 2429 } 2430 kfree_skb(skb); 2431 2432 return 0; 2433 } 2434 2435 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev, 2436 const bdaddr_t *bdaddr) 2437 { 2438 struct sk_buff *skb; 2439 u8 buf[10]; 2440 long ret; 2441 2442 buf[0] = 0x01; 2443 buf[1] = 0x01; 2444 buf[2] = 0x00; 2445 buf[3] = sizeof(bdaddr_t); 2446 memcpy(buf + 4, bdaddr, sizeof(bdaddr_t)); 2447 2448 skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT); 2449 if (IS_ERR(skb)) { 2450 ret = PTR_ERR(skb); 2451 BT_ERR("%s: Change address command failed (%ld)", 2452 hdev->name, ret); 2453 return ret; 2454 } 2455 kfree_skb(skb); 2456 2457 return 0; 2458 } 2459 2460 #define QCA_DFU_PACKET_LEN 4096 2461 2462 #define QCA_GET_TARGET_VERSION 0x09 2463 #define QCA_CHECK_STATUS 0x05 2464 #define QCA_DFU_DOWNLOAD 0x01 2465 2466 #define QCA_SYSCFG_UPDATED 0x40 2467 #define QCA_PATCH_UPDATED 0x80 2468 #define QCA_DFU_TIMEOUT 3000 2469 2470 struct qca_version { 2471 __le32 rom_version; 2472 __le32 patch_version; 2473 __le32 ram_version; 2474 __le32 ref_clock; 2475 __u8 reserved[4]; 2476 } __packed; 2477 2478 struct qca_rampatch_version { 2479 __le16 rom_version; 2480 __le16 patch_version; 2481 } __packed; 2482 2483 struct qca_device_info { 2484 u32 rom_version; 2485 u8 rampatch_hdr; /* length of header in rampatch */ 2486 u8 nvm_hdr; /* length of header in NVM */ 2487 u8 ver_offset; /* offset of version structure in rampatch */ 2488 }; 2489 2490 static const struct qca_device_info qca_devices_table[] = { 2491 { 0x00000100, 20, 4, 10 }, /* Rome 1.0 */ 2492 { 0x00000101, 20, 4, 10 }, /* Rome 1.1 */ 2493 { 0x00000200, 28, 4, 18 }, /* Rome 2.0 */ 2494 { 0x00000201, 28, 4, 18 }, /* Rome 2.1 */ 2495 { 0x00000300, 28, 4, 18 }, /* Rome 3.0 */ 2496 { 0x00000302, 28, 4, 18 }, /* Rome 3.2 */ 2497 }; 2498 2499 static int btusb_qca_send_vendor_req(struct hci_dev *hdev, u8 request, 2500 void *data, u16 size) 2501 { 2502 struct btusb_data *btdata = hci_get_drvdata(hdev); 2503 struct usb_device *udev = btdata->udev; 2504 int pipe, err; 2505 u8 *buf; 2506 2507 buf = kmalloc(size, GFP_KERNEL); 2508 if (!buf) 2509 return -ENOMEM; 2510 2511 /* Found some of USB hosts have IOT issues with ours so that we should 2512 * not wait until HCI layer is ready. 2513 */ 2514 pipe = usb_rcvctrlpipe(udev, 0); 2515 err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN, 2516 0, 0, buf, size, USB_CTRL_SET_TIMEOUT); 2517 if (err < 0) { 2518 BT_ERR("%s: Failed to access otp area (%d)", hdev->name, err); 2519 goto done; 2520 } 2521 2522 memcpy(data, buf, size); 2523 2524 done: 2525 kfree(buf); 2526 2527 return err; 2528 } 2529 2530 static int btusb_setup_qca_download_fw(struct hci_dev *hdev, 2531 const struct firmware *firmware, 2532 size_t hdr_size) 2533 { 2534 struct btusb_data *btdata = hci_get_drvdata(hdev); 2535 struct usb_device *udev = btdata->udev; 2536 size_t count, size, sent = 0; 2537 int pipe, len, err; 2538 u8 *buf; 2539 2540 buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL); 2541 if (!buf) 2542 return -ENOMEM; 2543 2544 count = firmware->size; 2545 2546 size = min_t(size_t, count, hdr_size); 2547 memcpy(buf, firmware->data, size); 2548 2549 /* USB patches should go down to controller through USB path 2550 * because binary format fits to go down through USB channel. 2551 * USB control path is for patching headers and USB bulk is for 2552 * patch body. 2553 */ 2554 pipe = usb_sndctrlpipe(udev, 0); 2555 err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR, 2556 0, 0, buf, size, USB_CTRL_SET_TIMEOUT); 2557 if (err < 0) { 2558 BT_ERR("%s: Failed to send headers (%d)", hdev->name, err); 2559 goto done; 2560 } 2561 2562 sent += size; 2563 count -= size; 2564 2565 while (count) { 2566 size = min_t(size_t, count, QCA_DFU_PACKET_LEN); 2567 2568 memcpy(buf, firmware->data + sent, size); 2569 2570 pipe = usb_sndbulkpipe(udev, 0x02); 2571 err = usb_bulk_msg(udev, pipe, buf, size, &len, 2572 QCA_DFU_TIMEOUT); 2573 if (err < 0) { 2574 BT_ERR("%s: Failed to send body at %zd of %zd (%d)", 2575 hdev->name, sent, firmware->size, err); 2576 break; 2577 } 2578 2579 if (size != len) { 2580 BT_ERR("%s: Failed to get bulk buffer", hdev->name); 2581 err = -EILSEQ; 2582 break; 2583 } 2584 2585 sent += size; 2586 count -= size; 2587 } 2588 2589 done: 2590 kfree(buf); 2591 return err; 2592 } 2593 2594 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev, 2595 struct qca_version *ver, 2596 const struct qca_device_info *info) 2597 { 2598 struct qca_rampatch_version *rver; 2599 const struct firmware *fw; 2600 u32 ver_rom, ver_patch; 2601 u16 rver_rom, rver_patch; 2602 char fwname[64]; 2603 int err; 2604 2605 ver_rom = le32_to_cpu(ver->rom_version); 2606 ver_patch = le32_to_cpu(ver->patch_version); 2607 2608 snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom); 2609 2610 err = request_firmware(&fw, fwname, &hdev->dev); 2611 if (err) { 2612 BT_ERR("%s: failed to request rampatch file: %s (%d)", 2613 hdev->name, fwname, err); 2614 return err; 2615 } 2616 2617 BT_INFO("%s: using rampatch file: %s", hdev->name, fwname); 2618 2619 rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset); 2620 rver_rom = le16_to_cpu(rver->rom_version); 2621 rver_patch = le16_to_cpu(rver->patch_version); 2622 2623 BT_INFO("%s: QCA: patch rome 0x%x build 0x%x, firmware rome 0x%x " 2624 "build 0x%x", hdev->name, rver_rom, rver_patch, ver_rom, 2625 ver_patch); 2626 2627 if (rver_rom != ver_rom || rver_patch <= ver_patch) { 2628 BT_ERR("%s: rampatch file version did not match with firmware", 2629 hdev->name); 2630 err = -EINVAL; 2631 goto done; 2632 } 2633 2634 err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr); 2635 2636 done: 2637 release_firmware(fw); 2638 2639 return err; 2640 } 2641 2642 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev, 2643 struct qca_version *ver, 2644 const struct qca_device_info *info) 2645 { 2646 const struct firmware *fw; 2647 char fwname[64]; 2648 int err; 2649 2650 snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x.bin", 2651 le32_to_cpu(ver->rom_version)); 2652 2653 err = request_firmware(&fw, fwname, &hdev->dev); 2654 if (err) { 2655 BT_ERR("%s: failed to request NVM file: %s (%d)", 2656 hdev->name, fwname, err); 2657 return err; 2658 } 2659 2660 BT_INFO("%s: using NVM file: %s", hdev->name, fwname); 2661 2662 err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr); 2663 2664 release_firmware(fw); 2665 2666 return err; 2667 } 2668 2669 static int btusb_setup_qca(struct hci_dev *hdev) 2670 { 2671 const struct qca_device_info *info = NULL; 2672 struct qca_version ver; 2673 u32 ver_rom; 2674 u8 status; 2675 int i, err; 2676 2677 err = btusb_qca_send_vendor_req(hdev, QCA_GET_TARGET_VERSION, &ver, 2678 sizeof(ver)); 2679 if (err < 0) 2680 return err; 2681 2682 ver_rom = le32_to_cpu(ver.rom_version); 2683 for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) { 2684 if (ver_rom == qca_devices_table[i].rom_version) 2685 info = &qca_devices_table[i]; 2686 } 2687 if (!info) { 2688 BT_ERR("%s: don't support firmware rome 0x%x", hdev->name, 2689 ver_rom); 2690 return -ENODEV; 2691 } 2692 2693 err = btusb_qca_send_vendor_req(hdev, QCA_CHECK_STATUS, &status, 2694 sizeof(status)); 2695 if (err < 0) 2696 return err; 2697 2698 if (!(status & QCA_PATCH_UPDATED)) { 2699 err = btusb_setup_qca_load_rampatch(hdev, &ver, info); 2700 if (err < 0) 2701 return err; 2702 } 2703 2704 if (!(status & QCA_SYSCFG_UPDATED)) { 2705 err = btusb_setup_qca_load_nvm(hdev, &ver, info); 2706 if (err < 0) 2707 return err; 2708 } 2709 2710 return 0; 2711 } 2712 2713 #ifdef CONFIG_BT_HCIBTUSB_BCM 2714 static inline int __set_diag_interface(struct hci_dev *hdev) 2715 { 2716 struct btusb_data *data = hci_get_drvdata(hdev); 2717 struct usb_interface *intf = data->diag; 2718 int i; 2719 2720 if (!data->diag) 2721 return -ENODEV; 2722 2723 data->diag_tx_ep = NULL; 2724 data->diag_rx_ep = NULL; 2725 2726 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { 2727 struct usb_endpoint_descriptor *ep_desc; 2728 2729 ep_desc = &intf->cur_altsetting->endpoint[i].desc; 2730 2731 if (!data->diag_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) { 2732 data->diag_tx_ep = ep_desc; 2733 continue; 2734 } 2735 2736 if (!data->diag_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) { 2737 data->diag_rx_ep = ep_desc; 2738 continue; 2739 } 2740 } 2741 2742 if (!data->diag_tx_ep || !data->diag_rx_ep) { 2743 BT_ERR("%s invalid diagnostic descriptors", hdev->name); 2744 return -ENODEV; 2745 } 2746 2747 return 0; 2748 } 2749 2750 static struct urb *alloc_diag_urb(struct hci_dev *hdev, bool enable) 2751 { 2752 struct btusb_data *data = hci_get_drvdata(hdev); 2753 struct sk_buff *skb; 2754 struct urb *urb; 2755 unsigned int pipe; 2756 2757 if (!data->diag_tx_ep) 2758 return ERR_PTR(-ENODEV); 2759 2760 urb = usb_alloc_urb(0, GFP_KERNEL); 2761 if (!urb) 2762 return ERR_PTR(-ENOMEM); 2763 2764 skb = bt_skb_alloc(2, GFP_KERNEL); 2765 if (!skb) { 2766 usb_free_urb(urb); 2767 return ERR_PTR(-ENOMEM); 2768 } 2769 2770 skb_put_u8(skb, 0xf0); 2771 skb_put_u8(skb, enable); 2772 2773 pipe = usb_sndbulkpipe(data->udev, data->diag_tx_ep->bEndpointAddress); 2774 2775 usb_fill_bulk_urb(urb, data->udev, pipe, 2776 skb->data, skb->len, btusb_tx_complete, skb); 2777 2778 skb->dev = (void *)hdev; 2779 2780 return urb; 2781 } 2782 2783 static int btusb_bcm_set_diag(struct hci_dev *hdev, bool enable) 2784 { 2785 struct btusb_data *data = hci_get_drvdata(hdev); 2786 struct urb *urb; 2787 2788 if (!data->diag) 2789 return -ENODEV; 2790 2791 if (!test_bit(HCI_RUNNING, &hdev->flags)) 2792 return -ENETDOWN; 2793 2794 urb = alloc_diag_urb(hdev, enable); 2795 if (IS_ERR(urb)) 2796 return PTR_ERR(urb); 2797 2798 return submit_or_queue_tx_urb(hdev, urb); 2799 } 2800 #endif 2801 2802 #ifdef CONFIG_PM 2803 static irqreturn_t btusb_oob_wake_handler(int irq, void *priv) 2804 { 2805 struct btusb_data *data = priv; 2806 2807 pm_wakeup_event(&data->udev->dev, 0); 2808 pm_system_wakeup(); 2809 2810 /* Disable only if not already disabled (keep it balanced) */ 2811 if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) { 2812 disable_irq_nosync(irq); 2813 disable_irq_wake(irq); 2814 } 2815 return IRQ_HANDLED; 2816 } 2817 2818 static const struct of_device_id btusb_match_table[] = { 2819 { .compatible = "usb1286,204e" }, 2820 { } 2821 }; 2822 MODULE_DEVICE_TABLE(of, btusb_match_table); 2823 2824 /* Use an oob wakeup pin? */ 2825 static int btusb_config_oob_wake(struct hci_dev *hdev) 2826 { 2827 struct btusb_data *data = hci_get_drvdata(hdev); 2828 struct device *dev = &data->udev->dev; 2829 int irq, ret; 2830 2831 clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags); 2832 2833 if (!of_match_device(btusb_match_table, dev)) 2834 return 0; 2835 2836 /* Move on if no IRQ specified */ 2837 irq = of_irq_get_byname(dev->of_node, "wakeup"); 2838 if (irq <= 0) { 2839 bt_dev_dbg(hdev, "%s: no OOB Wakeup IRQ in DT", __func__); 2840 return 0; 2841 } 2842 2843 ret = devm_request_irq(&hdev->dev, irq, btusb_oob_wake_handler, 2844 0, "OOB Wake-on-BT", data); 2845 if (ret) { 2846 bt_dev_err(hdev, "%s: IRQ request failed", __func__); 2847 return ret; 2848 } 2849 2850 ret = device_init_wakeup(dev, true); 2851 if (ret) { 2852 bt_dev_err(hdev, "%s: failed to init_wakeup", __func__); 2853 return ret; 2854 } 2855 2856 data->oob_wake_irq = irq; 2857 disable_irq(irq); 2858 bt_dev_info(hdev, "OOB Wake-on-BT configured at IRQ %u", irq); 2859 return 0; 2860 } 2861 #endif 2862 2863 static int btusb_probe(struct usb_interface *intf, 2864 const struct usb_device_id *id) 2865 { 2866 struct usb_endpoint_descriptor *ep_desc; 2867 struct btusb_data *data; 2868 struct hci_dev *hdev; 2869 unsigned ifnum_base; 2870 int i, err; 2871 2872 BT_DBG("intf %p id %p", intf, id); 2873 2874 /* interface numbers are hardcoded in the spec */ 2875 if (intf->cur_altsetting->desc.bInterfaceNumber != 0) { 2876 if (!(id->driver_info & BTUSB_IFNUM_2)) 2877 return -ENODEV; 2878 if (intf->cur_altsetting->desc.bInterfaceNumber != 2) 2879 return -ENODEV; 2880 } 2881 2882 ifnum_base = intf->cur_altsetting->desc.bInterfaceNumber; 2883 2884 if (!id->driver_info) { 2885 const struct usb_device_id *match; 2886 2887 match = usb_match_id(intf, blacklist_table); 2888 if (match) 2889 id = match; 2890 } 2891 2892 if (id->driver_info == BTUSB_IGNORE) 2893 return -ENODEV; 2894 2895 if (id->driver_info & BTUSB_ATH3012) { 2896 struct usb_device *udev = interface_to_usbdev(intf); 2897 2898 /* Old firmware would otherwise let ath3k driver load 2899 * patch and sysconfig files */ 2900 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001) 2901 return -ENODEV; 2902 } 2903 2904 data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL); 2905 if (!data) 2906 return -ENOMEM; 2907 2908 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { 2909 ep_desc = &intf->cur_altsetting->endpoint[i].desc; 2910 2911 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) { 2912 data->intr_ep = ep_desc; 2913 continue; 2914 } 2915 2916 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) { 2917 data->bulk_tx_ep = ep_desc; 2918 continue; 2919 } 2920 2921 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) { 2922 data->bulk_rx_ep = ep_desc; 2923 continue; 2924 } 2925 } 2926 2927 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) 2928 return -ENODEV; 2929 2930 if (id->driver_info & BTUSB_AMP) { 2931 data->cmdreq_type = USB_TYPE_CLASS | 0x01; 2932 data->cmdreq = 0x2b; 2933 } else { 2934 data->cmdreq_type = USB_TYPE_CLASS; 2935 data->cmdreq = 0x00; 2936 } 2937 2938 data->udev = interface_to_usbdev(intf); 2939 data->intf = intf; 2940 2941 INIT_WORK(&data->work, btusb_work); 2942 INIT_WORK(&data->waker, btusb_waker); 2943 init_usb_anchor(&data->deferred); 2944 init_usb_anchor(&data->tx_anchor); 2945 spin_lock_init(&data->txlock); 2946 2947 init_usb_anchor(&data->intr_anchor); 2948 init_usb_anchor(&data->bulk_anchor); 2949 init_usb_anchor(&data->isoc_anchor); 2950 init_usb_anchor(&data->diag_anchor); 2951 spin_lock_init(&data->rxlock); 2952 2953 if (id->driver_info & BTUSB_INTEL_NEW) { 2954 data->recv_event = btusb_recv_event_intel; 2955 data->recv_bulk = btusb_recv_bulk_intel; 2956 set_bit(BTUSB_BOOTLOADER, &data->flags); 2957 } else { 2958 data->recv_event = hci_recv_frame; 2959 data->recv_bulk = btusb_recv_bulk; 2960 } 2961 2962 hdev = hci_alloc_dev(); 2963 if (!hdev) 2964 return -ENOMEM; 2965 2966 hdev->bus = HCI_USB; 2967 hci_set_drvdata(hdev, data); 2968 2969 if (id->driver_info & BTUSB_AMP) 2970 hdev->dev_type = HCI_AMP; 2971 else 2972 hdev->dev_type = HCI_PRIMARY; 2973 2974 data->hdev = hdev; 2975 2976 SET_HCIDEV_DEV(hdev, &intf->dev); 2977 2978 hdev->open = btusb_open; 2979 hdev->close = btusb_close; 2980 hdev->flush = btusb_flush; 2981 hdev->send = btusb_send_frame; 2982 hdev->notify = btusb_notify; 2983 2984 #ifdef CONFIG_PM 2985 err = btusb_config_oob_wake(hdev); 2986 if (err) 2987 goto out_free_dev; 2988 2989 /* Marvell devices may need a specific chip configuration */ 2990 if (id->driver_info & BTUSB_MARVELL && data->oob_wake_irq) { 2991 err = marvell_config_oob_wake(hdev); 2992 if (err) 2993 goto out_free_dev; 2994 } 2995 #endif 2996 if (id->driver_info & BTUSB_CW6622) 2997 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks); 2998 2999 if (id->driver_info & BTUSB_BCM2045) 3000 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks); 3001 3002 if (id->driver_info & BTUSB_BCM92035) 3003 hdev->setup = btusb_setup_bcm92035; 3004 3005 #ifdef CONFIG_BT_HCIBTUSB_BCM 3006 if (id->driver_info & BTUSB_BCM_PATCHRAM) { 3007 hdev->manufacturer = 15; 3008 hdev->setup = btbcm_setup_patchram; 3009 hdev->set_diag = btusb_bcm_set_diag; 3010 hdev->set_bdaddr = btbcm_set_bdaddr; 3011 3012 /* Broadcom LM_DIAG Interface numbers are hardcoded */ 3013 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2); 3014 } 3015 3016 if (id->driver_info & BTUSB_BCM_APPLE) { 3017 hdev->manufacturer = 15; 3018 hdev->setup = btbcm_setup_apple; 3019 hdev->set_diag = btusb_bcm_set_diag; 3020 3021 /* Broadcom LM_DIAG Interface numbers are hardcoded */ 3022 data->diag = usb_ifnum_to_if(data->udev, ifnum_base + 2); 3023 } 3024 #endif 3025 3026 if (id->driver_info & BTUSB_INTEL) { 3027 hdev->manufacturer = 2; 3028 hdev->setup = btusb_setup_intel; 3029 hdev->shutdown = btusb_shutdown_intel; 3030 hdev->set_diag = btintel_set_diag_mfg; 3031 hdev->set_bdaddr = btintel_set_bdaddr; 3032 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks); 3033 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); 3034 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks); 3035 } 3036 3037 if (id->driver_info & BTUSB_INTEL_NEW) { 3038 hdev->manufacturer = 2; 3039 hdev->send = btusb_send_frame_intel; 3040 hdev->setup = btusb_setup_intel_new; 3041 hdev->hw_error = btintel_hw_error; 3042 hdev->set_diag = btintel_set_diag; 3043 hdev->set_bdaddr = btintel_set_bdaddr; 3044 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks); 3045 set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks); 3046 } 3047 3048 if (id->driver_info & BTUSB_MARVELL) 3049 hdev->set_bdaddr = btusb_set_bdaddr_marvell; 3050 3051 if (id->driver_info & BTUSB_SWAVE) { 3052 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks); 3053 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks); 3054 } 3055 3056 if (id->driver_info & BTUSB_INTEL_BOOT) { 3057 hdev->manufacturer = 2; 3058 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks); 3059 } 3060 3061 if (id->driver_info & BTUSB_ATH3012) { 3062 hdev->set_bdaddr = btusb_set_bdaddr_ath3012; 3063 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); 3064 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks); 3065 } 3066 3067 if (id->driver_info & BTUSB_QCA_ROME) { 3068 data->setup_on_usb = btusb_setup_qca; 3069 hdev->set_bdaddr = btusb_set_bdaddr_ath3012; 3070 } 3071 3072 #ifdef CONFIG_BT_HCIBTUSB_RTL 3073 if (id->driver_info & BTUSB_REALTEK) { 3074 hdev->setup = btrtl_setup_realtek; 3075 3076 /* Realtek devices lose their updated firmware over suspend, 3077 * but the USB hub doesn't notice any status change. 3078 * Explicitly request a device reset on resume. 3079 */ 3080 set_bit(BTUSB_RESET_RESUME, &data->flags); 3081 } 3082 #endif 3083 3084 if (id->driver_info & BTUSB_AMP) { 3085 /* AMP controllers do not support SCO packets */ 3086 data->isoc = NULL; 3087 } else { 3088 /* Interface orders are hardcoded in the specification */ 3089 data->isoc = usb_ifnum_to_if(data->udev, ifnum_base + 1); 3090 } 3091 3092 if (!reset) 3093 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); 3094 3095 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) { 3096 if (!disable_scofix) 3097 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks); 3098 } 3099 3100 if (id->driver_info & BTUSB_BROKEN_ISOC) 3101 data->isoc = NULL; 3102 3103 if (id->driver_info & BTUSB_DIGIANSWER) { 3104 data->cmdreq_type = USB_TYPE_VENDOR; 3105 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); 3106 } 3107 3108 if (id->driver_info & BTUSB_CSR) { 3109 struct usb_device *udev = data->udev; 3110 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice); 3111 3112 /* Old firmware would otherwise execute USB reset */ 3113 if (bcdDevice < 0x117) 3114 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); 3115 3116 /* Fake CSR devices with broken commands */ 3117 if (bcdDevice <= 0x100 || bcdDevice == 0x134) 3118 hdev->setup = btusb_setup_csr; 3119 3120 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); 3121 } 3122 3123 if (id->driver_info & BTUSB_SNIFFER) { 3124 struct usb_device *udev = data->udev; 3125 3126 /* New sniffer firmware has crippled HCI interface */ 3127 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997) 3128 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks); 3129 } 3130 3131 if (id->driver_info & BTUSB_INTEL_BOOT) { 3132 /* A bug in the bootloader causes that interrupt interface is 3133 * only enabled after receiving SetInterface(0, AltSetting=0). 3134 */ 3135 err = usb_set_interface(data->udev, 0, 0); 3136 if (err < 0) { 3137 BT_ERR("failed to set interface 0, alt 0 %d", err); 3138 goto out_free_dev; 3139 } 3140 } 3141 3142 if (data->isoc) { 3143 err = usb_driver_claim_interface(&btusb_driver, 3144 data->isoc, data); 3145 if (err < 0) 3146 goto out_free_dev; 3147 } 3148 3149 #ifdef CONFIG_BT_HCIBTUSB_BCM 3150 if (data->diag) { 3151 if (!usb_driver_claim_interface(&btusb_driver, 3152 data->diag, data)) 3153 __set_diag_interface(hdev); 3154 else 3155 data->diag = NULL; 3156 } 3157 #endif 3158 3159 err = hci_register_dev(hdev); 3160 if (err < 0) 3161 goto out_free_dev; 3162 3163 usb_set_intfdata(intf, data); 3164 3165 return 0; 3166 3167 out_free_dev: 3168 hci_free_dev(hdev); 3169 return err; 3170 } 3171 3172 static void btusb_disconnect(struct usb_interface *intf) 3173 { 3174 struct btusb_data *data = usb_get_intfdata(intf); 3175 struct hci_dev *hdev; 3176 3177 BT_DBG("intf %p", intf); 3178 3179 if (!data) 3180 return; 3181 3182 hdev = data->hdev; 3183 usb_set_intfdata(data->intf, NULL); 3184 3185 if (data->isoc) 3186 usb_set_intfdata(data->isoc, NULL); 3187 3188 if (data->diag) 3189 usb_set_intfdata(data->diag, NULL); 3190 3191 hci_unregister_dev(hdev); 3192 3193 if (intf == data->intf) { 3194 if (data->isoc) 3195 usb_driver_release_interface(&btusb_driver, data->isoc); 3196 if (data->diag) 3197 usb_driver_release_interface(&btusb_driver, data->diag); 3198 } else if (intf == data->isoc) { 3199 if (data->diag) 3200 usb_driver_release_interface(&btusb_driver, data->diag); 3201 usb_driver_release_interface(&btusb_driver, data->intf); 3202 } else if (intf == data->diag) { 3203 usb_driver_release_interface(&btusb_driver, data->intf); 3204 if (data->isoc) 3205 usb_driver_release_interface(&btusb_driver, data->isoc); 3206 } 3207 3208 if (data->oob_wake_irq) 3209 device_init_wakeup(&data->udev->dev, false); 3210 3211 hci_free_dev(hdev); 3212 } 3213 3214 #ifdef CONFIG_PM 3215 static int btusb_suspend(struct usb_interface *intf, pm_message_t message) 3216 { 3217 struct btusb_data *data = usb_get_intfdata(intf); 3218 3219 BT_DBG("intf %p", intf); 3220 3221 if (data->suspend_count++) 3222 return 0; 3223 3224 spin_lock_irq(&data->txlock); 3225 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) { 3226 set_bit(BTUSB_SUSPENDING, &data->flags); 3227 spin_unlock_irq(&data->txlock); 3228 } else { 3229 spin_unlock_irq(&data->txlock); 3230 data->suspend_count--; 3231 return -EBUSY; 3232 } 3233 3234 cancel_work_sync(&data->work); 3235 3236 btusb_stop_traffic(data); 3237 usb_kill_anchored_urbs(&data->tx_anchor); 3238 3239 if (data->oob_wake_irq && device_may_wakeup(&data->udev->dev)) { 3240 set_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags); 3241 enable_irq_wake(data->oob_wake_irq); 3242 enable_irq(data->oob_wake_irq); 3243 } 3244 3245 /* Optionally request a device reset on resume, but only when 3246 * wakeups are disabled. If wakeups are enabled we assume the 3247 * device will stay powered up throughout suspend. 3248 */ 3249 if (test_bit(BTUSB_RESET_RESUME, &data->flags) && 3250 !device_may_wakeup(&data->udev->dev)) 3251 data->udev->reset_resume = 1; 3252 3253 return 0; 3254 } 3255 3256 static void play_deferred(struct btusb_data *data) 3257 { 3258 struct urb *urb; 3259 int err; 3260 3261 while ((urb = usb_get_from_anchor(&data->deferred))) { 3262 err = usb_submit_urb(urb, GFP_ATOMIC); 3263 if (err < 0) 3264 break; 3265 3266 data->tx_in_flight++; 3267 } 3268 usb_scuttle_anchored_urbs(&data->deferred); 3269 } 3270 3271 static int btusb_resume(struct usb_interface *intf) 3272 { 3273 struct btusb_data *data = usb_get_intfdata(intf); 3274 struct hci_dev *hdev = data->hdev; 3275 int err = 0; 3276 3277 BT_DBG("intf %p", intf); 3278 3279 if (--data->suspend_count) 3280 return 0; 3281 3282 /* Disable only if not already disabled (keep it balanced) */ 3283 if (test_and_clear_bit(BTUSB_OOB_WAKE_ENABLED, &data->flags)) { 3284 disable_irq(data->oob_wake_irq); 3285 disable_irq_wake(data->oob_wake_irq); 3286 } 3287 3288 if (!test_bit(HCI_RUNNING, &hdev->flags)) 3289 goto done; 3290 3291 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) { 3292 err = btusb_submit_intr_urb(hdev, GFP_NOIO); 3293 if (err < 0) { 3294 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 3295 goto failed; 3296 } 3297 } 3298 3299 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) { 3300 err = btusb_submit_bulk_urb(hdev, GFP_NOIO); 3301 if (err < 0) { 3302 clear_bit(BTUSB_BULK_RUNNING, &data->flags); 3303 goto failed; 3304 } 3305 3306 btusb_submit_bulk_urb(hdev, GFP_NOIO); 3307 } 3308 3309 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) { 3310 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0) 3311 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 3312 else 3313 btusb_submit_isoc_urb(hdev, GFP_NOIO); 3314 } 3315 3316 spin_lock_irq(&data->txlock); 3317 play_deferred(data); 3318 clear_bit(BTUSB_SUSPENDING, &data->flags); 3319 spin_unlock_irq(&data->txlock); 3320 schedule_work(&data->work); 3321 3322 return 0; 3323 3324 failed: 3325 usb_scuttle_anchored_urbs(&data->deferred); 3326 done: 3327 spin_lock_irq(&data->txlock); 3328 clear_bit(BTUSB_SUSPENDING, &data->flags); 3329 spin_unlock_irq(&data->txlock); 3330 3331 return err; 3332 } 3333 #endif 3334 3335 static struct usb_driver btusb_driver = { 3336 .name = "btusb", 3337 .probe = btusb_probe, 3338 .disconnect = btusb_disconnect, 3339 #ifdef CONFIG_PM 3340 .suspend = btusb_suspend, 3341 .resume = btusb_resume, 3342 #endif 3343 .id_table = btusb_table, 3344 .supports_autosuspend = 1, 3345 .disable_hub_initiated_lpm = 1, 3346 }; 3347 3348 module_usb_driver(btusb_driver); 3349 3350 module_param(disable_scofix, bool, 0644); 3351 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size"); 3352 3353 module_param(force_scofix, bool, 0644); 3354 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size"); 3355 3356 module_param(reset, bool, 0644); 3357 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization"); 3358 3359 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); 3360 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION); 3361 MODULE_VERSION(VERSION); 3362 MODULE_LICENSE("GPL"); 3363