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