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 <asm/unaligned.h> 28 29 #include <net/bluetooth/bluetooth.h> 30 #include <net/bluetooth/hci_core.h> 31 32 #include "btintel.h" 33 #include "btbcm.h" 34 #include "btrtl.h" 35 36 #define VERSION "0.8" 37 38 static bool disable_scofix; 39 static bool force_scofix; 40 41 static bool reset = true; 42 43 static struct usb_driver btusb_driver; 44 45 #define BTUSB_IGNORE 0x01 46 #define BTUSB_DIGIANSWER 0x02 47 #define BTUSB_CSR 0x04 48 #define BTUSB_SNIFFER 0x08 49 #define BTUSB_BCM92035 0x10 50 #define BTUSB_BROKEN_ISOC 0x20 51 #define BTUSB_WRONG_SCO_MTU 0x40 52 #define BTUSB_ATH3012 0x80 53 #define BTUSB_INTEL 0x100 54 #define BTUSB_INTEL_BOOT 0x200 55 #define BTUSB_BCM_PATCHRAM 0x400 56 #define BTUSB_MARVELL 0x800 57 #define BTUSB_SWAVE 0x1000 58 #define BTUSB_INTEL_NEW 0x2000 59 #define BTUSB_AMP 0x4000 60 #define BTUSB_QCA_ROME 0x8000 61 #define BTUSB_BCM_APPLE 0x10000 62 #define BTUSB_REALTEK 0x20000 63 64 static const struct usb_device_id btusb_table[] = { 65 /* Generic Bluetooth USB device */ 66 { USB_DEVICE_INFO(0xe0, 0x01, 0x01) }, 67 68 /* Generic Bluetooth AMP device */ 69 { USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP }, 70 71 /* Generic Bluetooth USB interface */ 72 { USB_INTERFACE_INFO(0xe0, 0x01, 0x01) }, 73 74 /* Apple-specific (Broadcom) devices */ 75 { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01), 76 .driver_info = BTUSB_BCM_APPLE }, 77 78 /* MediaTek MT76x0E */ 79 { USB_DEVICE(0x0e8d, 0x763f) }, 80 81 /* Broadcom SoftSailing reporting vendor specific */ 82 { USB_DEVICE(0x0a5c, 0x21e1) }, 83 84 /* Apple MacBookPro 7,1 */ 85 { USB_DEVICE(0x05ac, 0x8213) }, 86 87 /* Apple iMac11,1 */ 88 { USB_DEVICE(0x05ac, 0x8215) }, 89 90 /* Apple MacBookPro6,2 */ 91 { USB_DEVICE(0x05ac, 0x8218) }, 92 93 /* Apple MacBookAir3,1, MacBookAir3,2 */ 94 { USB_DEVICE(0x05ac, 0x821b) }, 95 96 /* Apple MacBookAir4,1 */ 97 { USB_DEVICE(0x05ac, 0x821f) }, 98 99 /* Apple MacBookPro8,2 */ 100 { USB_DEVICE(0x05ac, 0x821a) }, 101 102 /* Apple MacMini5,1 */ 103 { USB_DEVICE(0x05ac, 0x8281) }, 104 105 /* AVM BlueFRITZ! USB v2.0 */ 106 { USB_DEVICE(0x057c, 0x3800), .driver_info = BTUSB_SWAVE }, 107 108 /* Bluetooth Ultraport Module from IBM */ 109 { USB_DEVICE(0x04bf, 0x030a) }, 110 111 /* ALPS Modules with non-standard id */ 112 { USB_DEVICE(0x044e, 0x3001) }, 113 { USB_DEVICE(0x044e, 0x3002) }, 114 115 /* Ericsson with non-standard id */ 116 { USB_DEVICE(0x0bdb, 0x1002) }, 117 118 /* Canyon CN-BTU1 with HID interfaces */ 119 { USB_DEVICE(0x0c10, 0x0000) }, 120 121 /* Broadcom BCM20702A0 */ 122 { USB_DEVICE(0x413c, 0x8197) }, 123 124 /* Broadcom BCM20702B0 (Dynex/Insignia) */ 125 { USB_DEVICE(0x19ff, 0x0239), .driver_info = BTUSB_BCM_PATCHRAM }, 126 127 /* Foxconn - Hon Hai */ 128 { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01), 129 .driver_info = BTUSB_BCM_PATCHRAM }, 130 131 /* Lite-On Technology - Broadcom based */ 132 { USB_VENDOR_AND_INTERFACE_INFO(0x04ca, 0xff, 0x01, 0x01), 133 .driver_info = BTUSB_BCM_PATCHRAM }, 134 135 /* Broadcom devices with vendor specific id */ 136 { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01), 137 .driver_info = BTUSB_BCM_PATCHRAM }, 138 139 /* ASUSTek Computer - Broadcom based */ 140 { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01), 141 .driver_info = BTUSB_BCM_PATCHRAM }, 142 143 /* Belkin F8065bf - Broadcom based */ 144 { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01), 145 .driver_info = BTUSB_BCM_PATCHRAM }, 146 147 /* IMC Networks - Broadcom based */ 148 { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01), 149 .driver_info = BTUSB_BCM_PATCHRAM }, 150 151 /* Intel Bluetooth USB Bootloader (RAM module) */ 152 { USB_DEVICE(0x8087, 0x0a5a), 153 .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC }, 154 155 { } /* Terminating entry */ 156 }; 157 158 MODULE_DEVICE_TABLE(usb, btusb_table); 159 160 static const struct usb_device_id blacklist_table[] = { 161 /* CSR BlueCore devices */ 162 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR }, 163 164 /* Broadcom BCM2033 without firmware */ 165 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE }, 166 167 /* Atheros 3011 with sflash firmware */ 168 { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE }, 169 { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE }, 170 { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE }, 171 { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE }, 172 { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE }, 173 { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE }, 174 { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE }, 175 176 /* Atheros AR9285 Malbec with sflash firmware */ 177 { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE }, 178 179 /* Atheros 3012 with sflash firmware */ 180 { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 }, 181 { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 }, 182 { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 }, 183 { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 }, 184 { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 }, 185 { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 }, 186 { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 }, 187 { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 }, 188 { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 }, 189 { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 }, 190 { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 }, 191 { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 }, 192 { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 }, 193 { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 }, 194 { USB_DEVICE(0x04ca, 0x300d), .driver_info = BTUSB_ATH3012 }, 195 { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 }, 196 { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 }, 197 { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 }, 198 { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 }, 199 { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 }, 200 { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 }, 201 { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 }, 202 { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 }, 203 { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 }, 204 { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 }, 205 { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 }, 206 { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 }, 207 { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 }, 208 { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 }, 209 { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 }, 210 { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 }, 211 { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 }, 212 { USB_DEVICE(0x0cf3, 0xe006), .driver_info = BTUSB_ATH3012 }, 213 { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 }, 214 { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 }, 215 { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 }, 216 { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 }, 217 { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 }, 218 { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 }, 219 { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 }, 220 { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 }, 221 222 /* Atheros AR5BBU12 with sflash firmware */ 223 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE }, 224 225 /* Atheros AR5BBU12 with sflash firmware */ 226 { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 }, 227 { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 }, 228 229 /* QCA ROME chipset */ 230 { USB_DEVICE(0x0cf3, 0xe007), .driver_info = BTUSB_QCA_ROME }, 231 { USB_DEVICE(0x0cf3, 0xe300), .driver_info = BTUSB_QCA_ROME }, 232 { USB_DEVICE(0x0cf3, 0xe360), .driver_info = BTUSB_QCA_ROME }, 233 234 /* Broadcom BCM2035 */ 235 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 }, 236 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU }, 237 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU }, 238 239 /* Broadcom BCM2045 */ 240 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU }, 241 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU }, 242 243 /* IBM/Lenovo ThinkPad with Broadcom chip */ 244 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU }, 245 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU }, 246 247 /* HP laptop with Broadcom chip */ 248 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU }, 249 250 /* Dell laptop with Broadcom chip */ 251 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU }, 252 253 /* Dell Wireless 370 and 410 devices */ 254 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU }, 255 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU }, 256 257 /* Belkin F8T012 and F8T013 devices */ 258 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU }, 259 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU }, 260 261 /* Asus WL-BTD202 device */ 262 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU }, 263 264 /* Kensington Bluetooth USB adapter */ 265 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU }, 266 267 /* RTX Telecom based adapters with buggy SCO support */ 268 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC }, 269 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC }, 270 271 /* CONWISE Technology based adapters with buggy SCO support */ 272 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC }, 273 274 /* Roper Class 1 Bluetooth Dongle (Silicon Wave based) */ 275 { USB_DEVICE(0x1310, 0x0001), .driver_info = BTUSB_SWAVE }, 276 277 /* Digianswer devices */ 278 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER }, 279 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE }, 280 281 /* CSR BlueCore Bluetooth Sniffer */ 282 { USB_DEVICE(0x0a12, 0x0002), 283 .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC }, 284 285 /* Frontline ComProbe Bluetooth Sniffer */ 286 { USB_DEVICE(0x16d3, 0x0002), 287 .driver_info = BTUSB_SNIFFER | BTUSB_BROKEN_ISOC }, 288 289 /* Marvell Bluetooth devices */ 290 { USB_DEVICE(0x1286, 0x2044), .driver_info = BTUSB_MARVELL }, 291 { USB_DEVICE(0x1286, 0x2046), .driver_info = BTUSB_MARVELL }, 292 293 /* Intel Bluetooth devices */ 294 { USB_DEVICE(0x8087, 0x07da), .driver_info = BTUSB_CSR }, 295 { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL }, 296 { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL }, 297 { USB_DEVICE(0x8087, 0x0a2b), .driver_info = BTUSB_INTEL_NEW }, 298 299 /* Other Intel Bluetooth devices */ 300 { USB_VENDOR_AND_INTERFACE_INFO(0x8087, 0xe0, 0x01, 0x01), 301 .driver_info = BTUSB_IGNORE }, 302 303 /* Realtek Bluetooth devices */ 304 { USB_VENDOR_AND_INTERFACE_INFO(0x0bda, 0xe0, 0x01, 0x01), 305 .driver_info = BTUSB_REALTEK }, 306 307 /* Additional Realtek 8723AE Bluetooth devices */ 308 { USB_DEVICE(0x0930, 0x021d), .driver_info = BTUSB_REALTEK }, 309 { USB_DEVICE(0x13d3, 0x3394), .driver_info = BTUSB_REALTEK }, 310 311 /* Additional Realtek 8723BE Bluetooth devices */ 312 { USB_DEVICE(0x0489, 0xe085), .driver_info = BTUSB_REALTEK }, 313 { USB_DEVICE(0x0489, 0xe08b), .driver_info = BTUSB_REALTEK }, 314 { USB_DEVICE(0x13d3, 0x3410), .driver_info = BTUSB_REALTEK }, 315 { USB_DEVICE(0x13d3, 0x3416), .driver_info = BTUSB_REALTEK }, 316 { USB_DEVICE(0x13d3, 0x3459), .driver_info = BTUSB_REALTEK }, 317 318 /* Additional Realtek 8821AE Bluetooth devices */ 319 { USB_DEVICE(0x0b05, 0x17dc), .driver_info = BTUSB_REALTEK }, 320 { USB_DEVICE(0x13d3, 0x3414), .driver_info = BTUSB_REALTEK }, 321 { USB_DEVICE(0x13d3, 0x3458), .driver_info = BTUSB_REALTEK }, 322 { USB_DEVICE(0x13d3, 0x3461), .driver_info = BTUSB_REALTEK }, 323 { USB_DEVICE(0x13d3, 0x3462), .driver_info = BTUSB_REALTEK }, 324 325 /* Silicon Wave based devices */ 326 { USB_DEVICE(0x0c10, 0x0000), .driver_info = BTUSB_SWAVE }, 327 328 { } /* Terminating entry */ 329 }; 330 331 #define BTUSB_MAX_ISOC_FRAMES 10 332 333 #define BTUSB_INTR_RUNNING 0 334 #define BTUSB_BULK_RUNNING 1 335 #define BTUSB_ISOC_RUNNING 2 336 #define BTUSB_SUSPENDING 3 337 #define BTUSB_DID_ISO_RESUME 4 338 #define BTUSB_BOOTLOADER 5 339 #define BTUSB_DOWNLOADING 6 340 #define BTUSB_FIRMWARE_LOADED 7 341 #define BTUSB_FIRMWARE_FAILED 8 342 #define BTUSB_BOOTING 9 343 #define BTUSB_RESET_RESUME 10 344 345 struct btusb_data { 346 struct hci_dev *hdev; 347 struct usb_device *udev; 348 struct usb_interface *intf; 349 struct usb_interface *isoc; 350 351 unsigned long flags; 352 353 struct work_struct work; 354 struct work_struct waker; 355 356 struct usb_anchor deferred; 357 struct usb_anchor tx_anchor; 358 int tx_in_flight; 359 spinlock_t txlock; 360 361 struct usb_anchor intr_anchor; 362 struct usb_anchor bulk_anchor; 363 struct usb_anchor isoc_anchor; 364 spinlock_t rxlock; 365 366 struct sk_buff *evt_skb; 367 struct sk_buff *acl_skb; 368 struct sk_buff *sco_skb; 369 370 struct usb_endpoint_descriptor *intr_ep; 371 struct usb_endpoint_descriptor *bulk_tx_ep; 372 struct usb_endpoint_descriptor *bulk_rx_ep; 373 struct usb_endpoint_descriptor *isoc_tx_ep; 374 struct usb_endpoint_descriptor *isoc_rx_ep; 375 376 __u8 cmdreq_type; 377 __u8 cmdreq; 378 379 unsigned int sco_num; 380 int isoc_altsetting; 381 int suspend_count; 382 383 int (*recv_event)(struct hci_dev *hdev, struct sk_buff *skb); 384 int (*recv_bulk)(struct btusb_data *data, void *buffer, int count); 385 386 int (*setup_on_usb)(struct hci_dev *hdev); 387 }; 388 389 static inline void btusb_free_frags(struct btusb_data *data) 390 { 391 unsigned long flags; 392 393 spin_lock_irqsave(&data->rxlock, flags); 394 395 kfree_skb(data->evt_skb); 396 data->evt_skb = NULL; 397 398 kfree_skb(data->acl_skb); 399 data->acl_skb = NULL; 400 401 kfree_skb(data->sco_skb); 402 data->sco_skb = NULL; 403 404 spin_unlock_irqrestore(&data->rxlock, flags); 405 } 406 407 static int btusb_recv_intr(struct btusb_data *data, void *buffer, int count) 408 { 409 struct sk_buff *skb; 410 int err = 0; 411 412 spin_lock(&data->rxlock); 413 skb = data->evt_skb; 414 415 while (count) { 416 int len; 417 418 if (!skb) { 419 skb = bt_skb_alloc(HCI_MAX_EVENT_SIZE, GFP_ATOMIC); 420 if (!skb) { 421 err = -ENOMEM; 422 break; 423 } 424 425 bt_cb(skb)->pkt_type = HCI_EVENT_PKT; 426 bt_cb(skb)->expect = HCI_EVENT_HDR_SIZE; 427 } 428 429 len = min_t(uint, bt_cb(skb)->expect, count); 430 memcpy(skb_put(skb, len), buffer, len); 431 432 count -= len; 433 buffer += len; 434 bt_cb(skb)->expect -= len; 435 436 if (skb->len == HCI_EVENT_HDR_SIZE) { 437 /* Complete event header */ 438 bt_cb(skb)->expect = hci_event_hdr(skb)->plen; 439 440 if (skb_tailroom(skb) < bt_cb(skb)->expect) { 441 kfree_skb(skb); 442 skb = NULL; 443 444 err = -EILSEQ; 445 break; 446 } 447 } 448 449 if (bt_cb(skb)->expect == 0) { 450 /* Complete frame */ 451 data->recv_event(data->hdev, skb); 452 skb = NULL; 453 } 454 } 455 456 data->evt_skb = skb; 457 spin_unlock(&data->rxlock); 458 459 return err; 460 } 461 462 static int btusb_recv_bulk(struct btusb_data *data, void *buffer, int count) 463 { 464 struct sk_buff *skb; 465 int err = 0; 466 467 spin_lock(&data->rxlock); 468 skb = data->acl_skb; 469 470 while (count) { 471 int len; 472 473 if (!skb) { 474 skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC); 475 if (!skb) { 476 err = -ENOMEM; 477 break; 478 } 479 480 bt_cb(skb)->pkt_type = HCI_ACLDATA_PKT; 481 bt_cb(skb)->expect = HCI_ACL_HDR_SIZE; 482 } 483 484 len = min_t(uint, bt_cb(skb)->expect, count); 485 memcpy(skb_put(skb, len), buffer, len); 486 487 count -= len; 488 buffer += len; 489 bt_cb(skb)->expect -= len; 490 491 if (skb->len == HCI_ACL_HDR_SIZE) { 492 __le16 dlen = hci_acl_hdr(skb)->dlen; 493 494 /* Complete ACL header */ 495 bt_cb(skb)->expect = __le16_to_cpu(dlen); 496 497 if (skb_tailroom(skb) < bt_cb(skb)->expect) { 498 kfree_skb(skb); 499 skb = NULL; 500 501 err = -EILSEQ; 502 break; 503 } 504 } 505 506 if (bt_cb(skb)->expect == 0) { 507 /* Complete frame */ 508 hci_recv_frame(data->hdev, skb); 509 skb = NULL; 510 } 511 } 512 513 data->acl_skb = skb; 514 spin_unlock(&data->rxlock); 515 516 return err; 517 } 518 519 static int btusb_recv_isoc(struct btusb_data *data, void *buffer, int count) 520 { 521 struct sk_buff *skb; 522 int err = 0; 523 524 spin_lock(&data->rxlock); 525 skb = data->sco_skb; 526 527 while (count) { 528 int len; 529 530 if (!skb) { 531 skb = bt_skb_alloc(HCI_MAX_SCO_SIZE, GFP_ATOMIC); 532 if (!skb) { 533 err = -ENOMEM; 534 break; 535 } 536 537 bt_cb(skb)->pkt_type = HCI_SCODATA_PKT; 538 bt_cb(skb)->expect = HCI_SCO_HDR_SIZE; 539 } 540 541 len = min_t(uint, bt_cb(skb)->expect, count); 542 memcpy(skb_put(skb, len), buffer, len); 543 544 count -= len; 545 buffer += len; 546 bt_cb(skb)->expect -= len; 547 548 if (skb->len == HCI_SCO_HDR_SIZE) { 549 /* Complete SCO header */ 550 bt_cb(skb)->expect = hci_sco_hdr(skb)->dlen; 551 552 if (skb_tailroom(skb) < bt_cb(skb)->expect) { 553 kfree_skb(skb); 554 skb = NULL; 555 556 err = -EILSEQ; 557 break; 558 } 559 } 560 561 if (bt_cb(skb)->expect == 0) { 562 /* Complete frame */ 563 hci_recv_frame(data->hdev, skb); 564 skb = NULL; 565 } 566 } 567 568 data->sco_skb = skb; 569 spin_unlock(&data->rxlock); 570 571 return err; 572 } 573 574 static void btusb_intr_complete(struct urb *urb) 575 { 576 struct hci_dev *hdev = urb->context; 577 struct btusb_data *data = hci_get_drvdata(hdev); 578 int err; 579 580 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, 581 urb->actual_length); 582 583 if (!test_bit(HCI_RUNNING, &hdev->flags)) 584 return; 585 586 if (urb->status == 0) { 587 hdev->stat.byte_rx += urb->actual_length; 588 589 if (btusb_recv_intr(data, urb->transfer_buffer, 590 urb->actual_length) < 0) { 591 BT_ERR("%s corrupted event packet", hdev->name); 592 hdev->stat.err_rx++; 593 } 594 } else if (urb->status == -ENOENT) { 595 /* Avoid suspend failed when usb_kill_urb */ 596 return; 597 } 598 599 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags)) 600 return; 601 602 usb_mark_last_busy(data->udev); 603 usb_anchor_urb(urb, &data->intr_anchor); 604 605 err = usb_submit_urb(urb, GFP_ATOMIC); 606 if (err < 0) { 607 /* -EPERM: urb is being killed; 608 * -ENODEV: device got disconnected */ 609 if (err != -EPERM && err != -ENODEV) 610 BT_ERR("%s urb %p failed to resubmit (%d)", 611 hdev->name, urb, -err); 612 usb_unanchor_urb(urb); 613 } 614 } 615 616 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags) 617 { 618 struct btusb_data *data = hci_get_drvdata(hdev); 619 struct urb *urb; 620 unsigned char *buf; 621 unsigned int pipe; 622 int err, size; 623 624 BT_DBG("%s", hdev->name); 625 626 if (!data->intr_ep) 627 return -ENODEV; 628 629 urb = usb_alloc_urb(0, mem_flags); 630 if (!urb) 631 return -ENOMEM; 632 633 size = le16_to_cpu(data->intr_ep->wMaxPacketSize); 634 635 buf = kmalloc(size, mem_flags); 636 if (!buf) { 637 usb_free_urb(urb); 638 return -ENOMEM; 639 } 640 641 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress); 642 643 usb_fill_int_urb(urb, data->udev, pipe, buf, size, 644 btusb_intr_complete, hdev, data->intr_ep->bInterval); 645 646 urb->transfer_flags |= URB_FREE_BUFFER; 647 648 usb_anchor_urb(urb, &data->intr_anchor); 649 650 err = usb_submit_urb(urb, mem_flags); 651 if (err < 0) { 652 if (err != -EPERM && err != -ENODEV) 653 BT_ERR("%s urb %p submission failed (%d)", 654 hdev->name, urb, -err); 655 usb_unanchor_urb(urb); 656 } 657 658 usb_free_urb(urb); 659 660 return err; 661 } 662 663 static void btusb_bulk_complete(struct urb *urb) 664 { 665 struct hci_dev *hdev = urb->context; 666 struct btusb_data *data = hci_get_drvdata(hdev); 667 int err; 668 669 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, 670 urb->actual_length); 671 672 if (!test_bit(HCI_RUNNING, &hdev->flags)) 673 return; 674 675 if (urb->status == 0) { 676 hdev->stat.byte_rx += urb->actual_length; 677 678 if (data->recv_bulk(data, urb->transfer_buffer, 679 urb->actual_length) < 0) { 680 BT_ERR("%s corrupted ACL packet", hdev->name); 681 hdev->stat.err_rx++; 682 } 683 } else if (urb->status == -ENOENT) { 684 /* Avoid suspend failed when usb_kill_urb */ 685 return; 686 } 687 688 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags)) 689 return; 690 691 usb_anchor_urb(urb, &data->bulk_anchor); 692 usb_mark_last_busy(data->udev); 693 694 err = usb_submit_urb(urb, GFP_ATOMIC); 695 if (err < 0) { 696 /* -EPERM: urb is being killed; 697 * -ENODEV: device got disconnected */ 698 if (err != -EPERM && err != -ENODEV) 699 BT_ERR("%s urb %p failed to resubmit (%d)", 700 hdev->name, urb, -err); 701 usb_unanchor_urb(urb); 702 } 703 } 704 705 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags) 706 { 707 struct btusb_data *data = hci_get_drvdata(hdev); 708 struct urb *urb; 709 unsigned char *buf; 710 unsigned int pipe; 711 int err, size = HCI_MAX_FRAME_SIZE; 712 713 BT_DBG("%s", hdev->name); 714 715 if (!data->bulk_rx_ep) 716 return -ENODEV; 717 718 urb = usb_alloc_urb(0, mem_flags); 719 if (!urb) 720 return -ENOMEM; 721 722 buf = kmalloc(size, mem_flags); 723 if (!buf) { 724 usb_free_urb(urb); 725 return -ENOMEM; 726 } 727 728 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress); 729 730 usb_fill_bulk_urb(urb, data->udev, pipe, buf, size, 731 btusb_bulk_complete, hdev); 732 733 urb->transfer_flags |= URB_FREE_BUFFER; 734 735 usb_mark_last_busy(data->udev); 736 usb_anchor_urb(urb, &data->bulk_anchor); 737 738 err = usb_submit_urb(urb, mem_flags); 739 if (err < 0) { 740 if (err != -EPERM && err != -ENODEV) 741 BT_ERR("%s urb %p submission failed (%d)", 742 hdev->name, urb, -err); 743 usb_unanchor_urb(urb); 744 } 745 746 usb_free_urb(urb); 747 748 return err; 749 } 750 751 static void btusb_isoc_complete(struct urb *urb) 752 { 753 struct hci_dev *hdev = urb->context; 754 struct btusb_data *data = hci_get_drvdata(hdev); 755 int i, err; 756 757 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, 758 urb->actual_length); 759 760 if (!test_bit(HCI_RUNNING, &hdev->flags)) 761 return; 762 763 if (urb->status == 0) { 764 for (i = 0; i < urb->number_of_packets; i++) { 765 unsigned int offset = urb->iso_frame_desc[i].offset; 766 unsigned int length = urb->iso_frame_desc[i].actual_length; 767 768 if (urb->iso_frame_desc[i].status) 769 continue; 770 771 hdev->stat.byte_rx += length; 772 773 if (btusb_recv_isoc(data, urb->transfer_buffer + offset, 774 length) < 0) { 775 BT_ERR("%s corrupted SCO packet", hdev->name); 776 hdev->stat.err_rx++; 777 } 778 } 779 } else if (urb->status == -ENOENT) { 780 /* Avoid suspend failed when usb_kill_urb */ 781 return; 782 } 783 784 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags)) 785 return; 786 787 usb_anchor_urb(urb, &data->isoc_anchor); 788 789 err = usb_submit_urb(urb, GFP_ATOMIC); 790 if (err < 0) { 791 /* -EPERM: urb is being killed; 792 * -ENODEV: device got disconnected */ 793 if (err != -EPERM && err != -ENODEV) 794 BT_ERR("%s urb %p failed to resubmit (%d)", 795 hdev->name, urb, -err); 796 usb_unanchor_urb(urb); 797 } 798 } 799 800 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu) 801 { 802 int i, offset = 0; 803 804 BT_DBG("len %d mtu %d", len, mtu); 805 806 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu; 807 i++, offset += mtu, len -= mtu) { 808 urb->iso_frame_desc[i].offset = offset; 809 urb->iso_frame_desc[i].length = mtu; 810 } 811 812 if (len && i < BTUSB_MAX_ISOC_FRAMES) { 813 urb->iso_frame_desc[i].offset = offset; 814 urb->iso_frame_desc[i].length = len; 815 i++; 816 } 817 818 urb->number_of_packets = i; 819 } 820 821 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags) 822 { 823 struct btusb_data *data = hci_get_drvdata(hdev); 824 struct urb *urb; 825 unsigned char *buf; 826 unsigned int pipe; 827 int err, size; 828 829 BT_DBG("%s", hdev->name); 830 831 if (!data->isoc_rx_ep) 832 return -ENODEV; 833 834 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags); 835 if (!urb) 836 return -ENOMEM; 837 838 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) * 839 BTUSB_MAX_ISOC_FRAMES; 840 841 buf = kmalloc(size, mem_flags); 842 if (!buf) { 843 usb_free_urb(urb); 844 return -ENOMEM; 845 } 846 847 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress); 848 849 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete, 850 hdev, data->isoc_rx_ep->bInterval); 851 852 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP; 853 854 __fill_isoc_descriptor(urb, size, 855 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize)); 856 857 usb_anchor_urb(urb, &data->isoc_anchor); 858 859 err = usb_submit_urb(urb, mem_flags); 860 if (err < 0) { 861 if (err != -EPERM && err != -ENODEV) 862 BT_ERR("%s urb %p submission failed (%d)", 863 hdev->name, urb, -err); 864 usb_unanchor_urb(urb); 865 } 866 867 usb_free_urb(urb); 868 869 return err; 870 } 871 872 static void btusb_tx_complete(struct urb *urb) 873 { 874 struct sk_buff *skb = urb->context; 875 struct hci_dev *hdev = (struct hci_dev *)skb->dev; 876 struct btusb_data *data = hci_get_drvdata(hdev); 877 878 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, 879 urb->actual_length); 880 881 if (!test_bit(HCI_RUNNING, &hdev->flags)) 882 goto done; 883 884 if (!urb->status) 885 hdev->stat.byte_tx += urb->transfer_buffer_length; 886 else 887 hdev->stat.err_tx++; 888 889 done: 890 spin_lock(&data->txlock); 891 data->tx_in_flight--; 892 spin_unlock(&data->txlock); 893 894 kfree(urb->setup_packet); 895 896 kfree_skb(skb); 897 } 898 899 static void btusb_isoc_tx_complete(struct urb *urb) 900 { 901 struct sk_buff *skb = urb->context; 902 struct hci_dev *hdev = (struct hci_dev *)skb->dev; 903 904 BT_DBG("%s urb %p status %d count %d", hdev->name, urb, urb->status, 905 urb->actual_length); 906 907 if (!test_bit(HCI_RUNNING, &hdev->flags)) 908 goto done; 909 910 if (!urb->status) 911 hdev->stat.byte_tx += urb->transfer_buffer_length; 912 else 913 hdev->stat.err_tx++; 914 915 done: 916 kfree(urb->setup_packet); 917 918 kfree_skb(skb); 919 } 920 921 static int btusb_open(struct hci_dev *hdev) 922 { 923 struct btusb_data *data = hci_get_drvdata(hdev); 924 int err; 925 926 BT_DBG("%s", hdev->name); 927 928 /* Patching USB firmware files prior to starting any URBs of HCI path 929 * It is more safe to use USB bulk channel for downloading USB patch 930 */ 931 if (data->setup_on_usb) { 932 err = data->setup_on_usb(hdev); 933 if (err < 0) 934 return err; 935 } 936 937 err = usb_autopm_get_interface(data->intf); 938 if (err < 0) 939 return err; 940 941 data->intf->needs_remote_wakeup = 1; 942 943 if (test_and_set_bit(HCI_RUNNING, &hdev->flags)) 944 goto done; 945 946 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags)) 947 goto done; 948 949 err = btusb_submit_intr_urb(hdev, GFP_KERNEL); 950 if (err < 0) 951 goto failed; 952 953 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL); 954 if (err < 0) { 955 usb_kill_anchored_urbs(&data->intr_anchor); 956 goto failed; 957 } 958 959 set_bit(BTUSB_BULK_RUNNING, &data->flags); 960 btusb_submit_bulk_urb(hdev, GFP_KERNEL); 961 962 done: 963 usb_autopm_put_interface(data->intf); 964 return 0; 965 966 failed: 967 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 968 clear_bit(HCI_RUNNING, &hdev->flags); 969 usb_autopm_put_interface(data->intf); 970 return err; 971 } 972 973 static void btusb_stop_traffic(struct btusb_data *data) 974 { 975 usb_kill_anchored_urbs(&data->intr_anchor); 976 usb_kill_anchored_urbs(&data->bulk_anchor); 977 usb_kill_anchored_urbs(&data->isoc_anchor); 978 } 979 980 static int btusb_close(struct hci_dev *hdev) 981 { 982 struct btusb_data *data = hci_get_drvdata(hdev); 983 int err; 984 985 BT_DBG("%s", hdev->name); 986 987 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags)) 988 return 0; 989 990 cancel_work_sync(&data->work); 991 cancel_work_sync(&data->waker); 992 993 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 994 clear_bit(BTUSB_BULK_RUNNING, &data->flags); 995 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 996 997 btusb_stop_traffic(data); 998 btusb_free_frags(data); 999 1000 err = usb_autopm_get_interface(data->intf); 1001 if (err < 0) 1002 goto failed; 1003 1004 data->intf->needs_remote_wakeup = 0; 1005 usb_autopm_put_interface(data->intf); 1006 1007 failed: 1008 usb_scuttle_anchored_urbs(&data->deferred); 1009 return 0; 1010 } 1011 1012 static int btusb_flush(struct hci_dev *hdev) 1013 { 1014 struct btusb_data *data = hci_get_drvdata(hdev); 1015 1016 BT_DBG("%s", hdev->name); 1017 1018 usb_kill_anchored_urbs(&data->tx_anchor); 1019 btusb_free_frags(data); 1020 1021 return 0; 1022 } 1023 1024 static struct urb *alloc_ctrl_urb(struct hci_dev *hdev, struct sk_buff *skb) 1025 { 1026 struct btusb_data *data = hci_get_drvdata(hdev); 1027 struct usb_ctrlrequest *dr; 1028 struct urb *urb; 1029 unsigned int pipe; 1030 1031 urb = usb_alloc_urb(0, GFP_KERNEL); 1032 if (!urb) 1033 return ERR_PTR(-ENOMEM); 1034 1035 dr = kmalloc(sizeof(*dr), GFP_KERNEL); 1036 if (!dr) { 1037 usb_free_urb(urb); 1038 return ERR_PTR(-ENOMEM); 1039 } 1040 1041 dr->bRequestType = data->cmdreq_type; 1042 dr->bRequest = data->cmdreq; 1043 dr->wIndex = 0; 1044 dr->wValue = 0; 1045 dr->wLength = __cpu_to_le16(skb->len); 1046 1047 pipe = usb_sndctrlpipe(data->udev, 0x00); 1048 1049 usb_fill_control_urb(urb, data->udev, pipe, (void *)dr, 1050 skb->data, skb->len, btusb_tx_complete, skb); 1051 1052 skb->dev = (void *)hdev; 1053 1054 return urb; 1055 } 1056 1057 static struct urb *alloc_bulk_urb(struct hci_dev *hdev, struct sk_buff *skb) 1058 { 1059 struct btusb_data *data = hci_get_drvdata(hdev); 1060 struct urb *urb; 1061 unsigned int pipe; 1062 1063 if (!data->bulk_tx_ep) 1064 return ERR_PTR(-ENODEV); 1065 1066 urb = usb_alloc_urb(0, GFP_KERNEL); 1067 if (!urb) 1068 return ERR_PTR(-ENOMEM); 1069 1070 pipe = usb_sndbulkpipe(data->udev, data->bulk_tx_ep->bEndpointAddress); 1071 1072 usb_fill_bulk_urb(urb, data->udev, pipe, 1073 skb->data, skb->len, btusb_tx_complete, skb); 1074 1075 skb->dev = (void *)hdev; 1076 1077 return urb; 1078 } 1079 1080 static struct urb *alloc_isoc_urb(struct hci_dev *hdev, struct sk_buff *skb) 1081 { 1082 struct btusb_data *data = hci_get_drvdata(hdev); 1083 struct urb *urb; 1084 unsigned int pipe; 1085 1086 if (!data->isoc_tx_ep) 1087 return ERR_PTR(-ENODEV); 1088 1089 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_KERNEL); 1090 if (!urb) 1091 return ERR_PTR(-ENOMEM); 1092 1093 pipe = usb_sndisocpipe(data->udev, data->isoc_tx_ep->bEndpointAddress); 1094 1095 usb_fill_int_urb(urb, data->udev, pipe, 1096 skb->data, skb->len, btusb_isoc_tx_complete, 1097 skb, data->isoc_tx_ep->bInterval); 1098 1099 urb->transfer_flags = URB_ISO_ASAP; 1100 1101 __fill_isoc_descriptor(urb, skb->len, 1102 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize)); 1103 1104 skb->dev = (void *)hdev; 1105 1106 return urb; 1107 } 1108 1109 static int submit_tx_urb(struct hci_dev *hdev, struct urb *urb) 1110 { 1111 struct btusb_data *data = hci_get_drvdata(hdev); 1112 int err; 1113 1114 usb_anchor_urb(urb, &data->tx_anchor); 1115 1116 err = usb_submit_urb(urb, GFP_KERNEL); 1117 if (err < 0) { 1118 if (err != -EPERM && err != -ENODEV) 1119 BT_ERR("%s urb %p submission failed (%d)", 1120 hdev->name, urb, -err); 1121 kfree(urb->setup_packet); 1122 usb_unanchor_urb(urb); 1123 } else { 1124 usb_mark_last_busy(data->udev); 1125 } 1126 1127 usb_free_urb(urb); 1128 return err; 1129 } 1130 1131 static int submit_or_queue_tx_urb(struct hci_dev *hdev, struct urb *urb) 1132 { 1133 struct btusb_data *data = hci_get_drvdata(hdev); 1134 unsigned long flags; 1135 bool suspending; 1136 1137 spin_lock_irqsave(&data->txlock, flags); 1138 suspending = test_bit(BTUSB_SUSPENDING, &data->flags); 1139 if (!suspending) 1140 data->tx_in_flight++; 1141 spin_unlock_irqrestore(&data->txlock, flags); 1142 1143 if (!suspending) 1144 return submit_tx_urb(hdev, urb); 1145 1146 usb_anchor_urb(urb, &data->deferred); 1147 schedule_work(&data->waker); 1148 1149 usb_free_urb(urb); 1150 return 0; 1151 } 1152 1153 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb) 1154 { 1155 struct urb *urb; 1156 1157 BT_DBG("%s", hdev->name); 1158 1159 if (!test_bit(HCI_RUNNING, &hdev->flags)) 1160 return -EBUSY; 1161 1162 switch (bt_cb(skb)->pkt_type) { 1163 case HCI_COMMAND_PKT: 1164 urb = alloc_ctrl_urb(hdev, skb); 1165 if (IS_ERR(urb)) 1166 return PTR_ERR(urb); 1167 1168 hdev->stat.cmd_tx++; 1169 return submit_or_queue_tx_urb(hdev, urb); 1170 1171 case HCI_ACLDATA_PKT: 1172 urb = alloc_bulk_urb(hdev, skb); 1173 if (IS_ERR(urb)) 1174 return PTR_ERR(urb); 1175 1176 hdev->stat.acl_tx++; 1177 return submit_or_queue_tx_urb(hdev, urb); 1178 1179 case HCI_SCODATA_PKT: 1180 if (hci_conn_num(hdev, SCO_LINK) < 1) 1181 return -ENODEV; 1182 1183 urb = alloc_isoc_urb(hdev, skb); 1184 if (IS_ERR(urb)) 1185 return PTR_ERR(urb); 1186 1187 hdev->stat.sco_tx++; 1188 return submit_tx_urb(hdev, urb); 1189 } 1190 1191 return -EILSEQ; 1192 } 1193 1194 static void btusb_notify(struct hci_dev *hdev, unsigned int evt) 1195 { 1196 struct btusb_data *data = hci_get_drvdata(hdev); 1197 1198 BT_DBG("%s evt %d", hdev->name, evt); 1199 1200 if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) { 1201 data->sco_num = hci_conn_num(hdev, SCO_LINK); 1202 schedule_work(&data->work); 1203 } 1204 } 1205 1206 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting) 1207 { 1208 struct btusb_data *data = hci_get_drvdata(hdev); 1209 struct usb_interface *intf = data->isoc; 1210 struct usb_endpoint_descriptor *ep_desc; 1211 int i, err; 1212 1213 if (!data->isoc) 1214 return -ENODEV; 1215 1216 err = usb_set_interface(data->udev, 1, altsetting); 1217 if (err < 0) { 1218 BT_ERR("%s setting interface failed (%d)", hdev->name, -err); 1219 return err; 1220 } 1221 1222 data->isoc_altsetting = altsetting; 1223 1224 data->isoc_tx_ep = NULL; 1225 data->isoc_rx_ep = NULL; 1226 1227 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { 1228 ep_desc = &intf->cur_altsetting->endpoint[i].desc; 1229 1230 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) { 1231 data->isoc_tx_ep = ep_desc; 1232 continue; 1233 } 1234 1235 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) { 1236 data->isoc_rx_ep = ep_desc; 1237 continue; 1238 } 1239 } 1240 1241 if (!data->isoc_tx_ep || !data->isoc_rx_ep) { 1242 BT_ERR("%s invalid SCO descriptors", hdev->name); 1243 return -ENODEV; 1244 } 1245 1246 return 0; 1247 } 1248 1249 static void btusb_work(struct work_struct *work) 1250 { 1251 struct btusb_data *data = container_of(work, struct btusb_data, work); 1252 struct hci_dev *hdev = data->hdev; 1253 int new_alts; 1254 int err; 1255 1256 if (data->sco_num > 0) { 1257 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) { 1258 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf); 1259 if (err < 0) { 1260 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1261 usb_kill_anchored_urbs(&data->isoc_anchor); 1262 return; 1263 } 1264 1265 set_bit(BTUSB_DID_ISO_RESUME, &data->flags); 1266 } 1267 1268 if (hdev->voice_setting & 0x0020) { 1269 static const int alts[3] = { 2, 4, 5 }; 1270 1271 new_alts = alts[data->sco_num - 1]; 1272 } else { 1273 new_alts = data->sco_num; 1274 } 1275 1276 if (data->isoc_altsetting != new_alts) { 1277 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1278 usb_kill_anchored_urbs(&data->isoc_anchor); 1279 1280 /* When isochronous alternate setting needs to be 1281 * changed, because SCO connection has been added 1282 * or removed, a packet fragment may be left in the 1283 * reassembling state. This could lead to wrongly 1284 * assembled fragments. 1285 * 1286 * Clear outstanding fragment when selecting a new 1287 * alternate setting. 1288 */ 1289 spin_lock(&data->rxlock); 1290 kfree_skb(data->sco_skb); 1291 data->sco_skb = NULL; 1292 spin_unlock(&data->rxlock); 1293 1294 if (__set_isoc_interface(hdev, new_alts) < 0) 1295 return; 1296 } 1297 1298 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) { 1299 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0) 1300 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1301 else 1302 btusb_submit_isoc_urb(hdev, GFP_KERNEL); 1303 } 1304 } else { 1305 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1306 usb_kill_anchored_urbs(&data->isoc_anchor); 1307 1308 __set_isoc_interface(hdev, 0); 1309 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags)) 1310 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf); 1311 } 1312 } 1313 1314 static void btusb_waker(struct work_struct *work) 1315 { 1316 struct btusb_data *data = container_of(work, struct btusb_data, waker); 1317 int err; 1318 1319 err = usb_autopm_get_interface(data->intf); 1320 if (err < 0) 1321 return; 1322 1323 usb_autopm_put_interface(data->intf); 1324 } 1325 1326 static int btusb_setup_bcm92035(struct hci_dev *hdev) 1327 { 1328 struct sk_buff *skb; 1329 u8 val = 0x00; 1330 1331 BT_DBG("%s", hdev->name); 1332 1333 skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT); 1334 if (IS_ERR(skb)) 1335 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb)); 1336 else 1337 kfree_skb(skb); 1338 1339 return 0; 1340 } 1341 1342 static int btusb_setup_csr(struct hci_dev *hdev) 1343 { 1344 struct hci_rp_read_local_version *rp; 1345 struct sk_buff *skb; 1346 1347 BT_DBG("%s", hdev->name); 1348 1349 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL, 1350 HCI_INIT_TIMEOUT); 1351 if (IS_ERR(skb)) { 1352 int err = PTR_ERR(skb); 1353 BT_ERR("%s: CSR: Local version failed (%d)", hdev->name, err); 1354 return err; 1355 } 1356 1357 if (skb->len != sizeof(struct hci_rp_read_local_version)) { 1358 BT_ERR("%s: CSR: Local version length mismatch", hdev->name); 1359 kfree_skb(skb); 1360 return -EIO; 1361 } 1362 1363 rp = (struct hci_rp_read_local_version *)skb->data; 1364 1365 /* Detect controllers which aren't real CSR ones. */ 1366 if (le16_to_cpu(rp->manufacturer) != 10 || 1367 le16_to_cpu(rp->lmp_subver) == 0x0c5c) { 1368 /* Clear the reset quirk since this is not an actual 1369 * early Bluetooth 1.1 device from CSR. 1370 */ 1371 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); 1372 1373 /* These fake CSR controllers have all a broken 1374 * stored link key handling and so just disable it. 1375 */ 1376 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, &hdev->quirks); 1377 } 1378 1379 kfree_skb(skb); 1380 1381 return 0; 1382 } 1383 1384 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev, 1385 struct intel_version *ver) 1386 { 1387 const struct firmware *fw; 1388 char fwname[64]; 1389 int ret; 1390 1391 snprintf(fwname, sizeof(fwname), 1392 "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq", 1393 ver->hw_platform, ver->hw_variant, ver->hw_revision, 1394 ver->fw_variant, ver->fw_revision, ver->fw_build_num, 1395 ver->fw_build_ww, ver->fw_build_yy); 1396 1397 ret = request_firmware(&fw, fwname, &hdev->dev); 1398 if (ret < 0) { 1399 if (ret == -EINVAL) { 1400 BT_ERR("%s Intel firmware file request failed (%d)", 1401 hdev->name, ret); 1402 return NULL; 1403 } 1404 1405 BT_ERR("%s failed to open Intel firmware file: %s(%d)", 1406 hdev->name, fwname, ret); 1407 1408 /* If the correct firmware patch file is not found, use the 1409 * default firmware patch file instead 1410 */ 1411 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq", 1412 ver->hw_platform, ver->hw_variant); 1413 if (request_firmware(&fw, fwname, &hdev->dev) < 0) { 1414 BT_ERR("%s failed to open default Intel fw file: %s", 1415 hdev->name, fwname); 1416 return NULL; 1417 } 1418 } 1419 1420 BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname); 1421 1422 return fw; 1423 } 1424 1425 static int btusb_setup_intel_patching(struct hci_dev *hdev, 1426 const struct firmware *fw, 1427 const u8 **fw_ptr, int *disable_patch) 1428 { 1429 struct sk_buff *skb; 1430 struct hci_command_hdr *cmd; 1431 const u8 *cmd_param; 1432 struct hci_event_hdr *evt = NULL; 1433 const u8 *evt_param = NULL; 1434 int remain = fw->size - (*fw_ptr - fw->data); 1435 1436 /* The first byte indicates the types of the patch command or event. 1437 * 0x01 means HCI command and 0x02 is HCI event. If the first bytes 1438 * in the current firmware buffer doesn't start with 0x01 or 1439 * the size of remain buffer is smaller than HCI command header, 1440 * the firmware file is corrupted and it should stop the patching 1441 * process. 1442 */ 1443 if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) { 1444 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name); 1445 return -EINVAL; 1446 } 1447 (*fw_ptr)++; 1448 remain--; 1449 1450 cmd = (struct hci_command_hdr *)(*fw_ptr); 1451 *fw_ptr += sizeof(*cmd); 1452 remain -= sizeof(*cmd); 1453 1454 /* Ensure that the remain firmware data is long enough than the length 1455 * of command parameter. If not, the firmware file is corrupted. 1456 */ 1457 if (remain < cmd->plen) { 1458 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name); 1459 return -EFAULT; 1460 } 1461 1462 /* If there is a command that loads a patch in the firmware 1463 * file, then enable the patch upon success, otherwise just 1464 * disable the manufacturer mode, for example patch activation 1465 * is not required when the default firmware patch file is used 1466 * because there are no patch data to load. 1467 */ 1468 if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e) 1469 *disable_patch = 0; 1470 1471 cmd_param = *fw_ptr; 1472 *fw_ptr += cmd->plen; 1473 remain -= cmd->plen; 1474 1475 /* This reads the expected events when the above command is sent to the 1476 * device. Some vendor commands expects more than one events, for 1477 * example command status event followed by vendor specific event. 1478 * For this case, it only keeps the last expected event. so the command 1479 * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of 1480 * last expected event. 1481 */ 1482 while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) { 1483 (*fw_ptr)++; 1484 remain--; 1485 1486 evt = (struct hci_event_hdr *)(*fw_ptr); 1487 *fw_ptr += sizeof(*evt); 1488 remain -= sizeof(*evt); 1489 1490 if (remain < evt->plen) { 1491 BT_ERR("%s Intel fw corrupted: invalid evt len", 1492 hdev->name); 1493 return -EFAULT; 1494 } 1495 1496 evt_param = *fw_ptr; 1497 *fw_ptr += evt->plen; 1498 remain -= evt->plen; 1499 } 1500 1501 /* Every HCI commands in the firmware file has its correspond event. 1502 * If event is not found or remain is smaller than zero, the firmware 1503 * file is corrupted. 1504 */ 1505 if (!evt || !evt_param || remain < 0) { 1506 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name); 1507 return -EFAULT; 1508 } 1509 1510 skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen, 1511 cmd_param, evt->evt, HCI_INIT_TIMEOUT); 1512 if (IS_ERR(skb)) { 1513 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)", 1514 hdev->name, cmd->opcode, PTR_ERR(skb)); 1515 return PTR_ERR(skb); 1516 } 1517 1518 /* It ensures that the returned event matches the event data read from 1519 * the firmware file. At fist, it checks the length and then 1520 * the contents of the event. 1521 */ 1522 if (skb->len != evt->plen) { 1523 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name, 1524 le16_to_cpu(cmd->opcode)); 1525 kfree_skb(skb); 1526 return -EFAULT; 1527 } 1528 1529 if (memcmp(skb->data, evt_param, evt->plen)) { 1530 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)", 1531 hdev->name, le16_to_cpu(cmd->opcode)); 1532 kfree_skb(skb); 1533 return -EFAULT; 1534 } 1535 kfree_skb(skb); 1536 1537 return 0; 1538 } 1539 1540 static int btusb_setup_intel(struct hci_dev *hdev) 1541 { 1542 struct sk_buff *skb; 1543 const struct firmware *fw; 1544 const u8 *fw_ptr; 1545 int disable_patch; 1546 struct intel_version *ver; 1547 1548 const u8 mfg_enable[] = { 0x01, 0x00 }; 1549 const u8 mfg_disable[] = { 0x00, 0x00 }; 1550 const u8 mfg_reset_deactivate[] = { 0x00, 0x01 }; 1551 const u8 mfg_reset_activate[] = { 0x00, 0x02 }; 1552 1553 BT_DBG("%s", hdev->name); 1554 1555 /* The controller has a bug with the first HCI command sent to it 1556 * returning number of completed commands as zero. This would stall the 1557 * command processing in the Bluetooth core. 1558 * 1559 * As a workaround, send HCI Reset command first which will reset the 1560 * number of completed commands and allow normal command processing 1561 * from now on. 1562 */ 1563 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT); 1564 if (IS_ERR(skb)) { 1565 BT_ERR("%s sending initial HCI reset command failed (%ld)", 1566 hdev->name, PTR_ERR(skb)); 1567 return PTR_ERR(skb); 1568 } 1569 kfree_skb(skb); 1570 1571 /* Read Intel specific controller version first to allow selection of 1572 * which firmware file to load. 1573 * 1574 * The returned information are hardware variant and revision plus 1575 * firmware variant, revision and build number. 1576 */ 1577 skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT); 1578 if (IS_ERR(skb)) { 1579 BT_ERR("%s reading Intel fw version command failed (%ld)", 1580 hdev->name, PTR_ERR(skb)); 1581 return PTR_ERR(skb); 1582 } 1583 1584 if (skb->len != sizeof(*ver)) { 1585 BT_ERR("%s Intel version event length mismatch", hdev->name); 1586 kfree_skb(skb); 1587 return -EIO; 1588 } 1589 1590 ver = (struct intel_version *)skb->data; 1591 1592 BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x", 1593 hdev->name, ver->hw_platform, ver->hw_variant, 1594 ver->hw_revision, ver->fw_variant, ver->fw_revision, 1595 ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy, 1596 ver->fw_patch_num); 1597 1598 /* fw_patch_num indicates the version of patch the device currently 1599 * have. If there is no patch data in the device, it is always 0x00. 1600 * So, if it is other than 0x00, no need to patch the device again. 1601 */ 1602 if (ver->fw_patch_num) { 1603 BT_INFO("%s: Intel device is already patched. patch num: %02x", 1604 hdev->name, ver->fw_patch_num); 1605 kfree_skb(skb); 1606 btintel_check_bdaddr(hdev); 1607 return 0; 1608 } 1609 1610 /* Opens the firmware patch file based on the firmware version read 1611 * from the controller. If it fails to open the matching firmware 1612 * patch file, it tries to open the default firmware patch file. 1613 * If no patch file is found, allow the device to operate without 1614 * a patch. 1615 */ 1616 fw = btusb_setup_intel_get_fw(hdev, ver); 1617 if (!fw) { 1618 kfree_skb(skb); 1619 btintel_check_bdaddr(hdev); 1620 return 0; 1621 } 1622 fw_ptr = fw->data; 1623 1624 kfree_skb(skb); 1625 1626 /* This Intel specific command enables the manufacturer mode of the 1627 * controller. 1628 * 1629 * Only while this mode is enabled, the driver can download the 1630 * firmware patch data and configuration parameters. 1631 */ 1632 skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT); 1633 if (IS_ERR(skb)) { 1634 BT_ERR("%s entering Intel manufacturer mode failed (%ld)", 1635 hdev->name, PTR_ERR(skb)); 1636 release_firmware(fw); 1637 return PTR_ERR(skb); 1638 } 1639 1640 kfree_skb(skb); 1641 1642 disable_patch = 1; 1643 1644 /* The firmware data file consists of list of Intel specific HCI 1645 * commands and its expected events. The first byte indicates the 1646 * type of the message, either HCI command or HCI event. 1647 * 1648 * It reads the command and its expected event from the firmware file, 1649 * and send to the controller. Once __hci_cmd_sync_ev() returns, 1650 * the returned event is compared with the event read from the firmware 1651 * file and it will continue until all the messages are downloaded to 1652 * the controller. 1653 * 1654 * Once the firmware patching is completed successfully, 1655 * the manufacturer mode is disabled with reset and activating the 1656 * downloaded patch. 1657 * 1658 * If the firmware patching fails, the manufacturer mode is 1659 * disabled with reset and deactivating the patch. 1660 * 1661 * If the default patch file is used, no reset is done when disabling 1662 * the manufacturer. 1663 */ 1664 while (fw->size > fw_ptr - fw->data) { 1665 int ret; 1666 1667 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr, 1668 &disable_patch); 1669 if (ret < 0) 1670 goto exit_mfg_deactivate; 1671 } 1672 1673 release_firmware(fw); 1674 1675 if (disable_patch) 1676 goto exit_mfg_disable; 1677 1678 /* Patching completed successfully and disable the manufacturer mode 1679 * with reset and activate the downloaded firmware patches. 1680 */ 1681 skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate), 1682 mfg_reset_activate, HCI_INIT_TIMEOUT); 1683 if (IS_ERR(skb)) { 1684 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)", 1685 hdev->name, PTR_ERR(skb)); 1686 return PTR_ERR(skb); 1687 } 1688 kfree_skb(skb); 1689 1690 BT_INFO("%s: Intel Bluetooth firmware patch completed and activated", 1691 hdev->name); 1692 1693 btintel_check_bdaddr(hdev); 1694 return 0; 1695 1696 exit_mfg_disable: 1697 /* Disable the manufacturer mode without reset */ 1698 skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable, 1699 HCI_INIT_TIMEOUT); 1700 if (IS_ERR(skb)) { 1701 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)", 1702 hdev->name, PTR_ERR(skb)); 1703 return PTR_ERR(skb); 1704 } 1705 kfree_skb(skb); 1706 1707 BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name); 1708 1709 btintel_check_bdaddr(hdev); 1710 return 0; 1711 1712 exit_mfg_deactivate: 1713 release_firmware(fw); 1714 1715 /* Patching failed. Disable the manufacturer mode with reset and 1716 * deactivate the downloaded firmware patches. 1717 */ 1718 skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate), 1719 mfg_reset_deactivate, HCI_INIT_TIMEOUT); 1720 if (IS_ERR(skb)) { 1721 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)", 1722 hdev->name, PTR_ERR(skb)); 1723 return PTR_ERR(skb); 1724 } 1725 kfree_skb(skb); 1726 1727 BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated", 1728 hdev->name); 1729 1730 btintel_check_bdaddr(hdev); 1731 return 0; 1732 } 1733 1734 static int inject_cmd_complete(struct hci_dev *hdev, __u16 opcode) 1735 { 1736 struct sk_buff *skb; 1737 struct hci_event_hdr *hdr; 1738 struct hci_ev_cmd_complete *evt; 1739 1740 skb = bt_skb_alloc(sizeof(*hdr) + sizeof(*evt) + 1, GFP_ATOMIC); 1741 if (!skb) 1742 return -ENOMEM; 1743 1744 hdr = (struct hci_event_hdr *)skb_put(skb, sizeof(*hdr)); 1745 hdr->evt = HCI_EV_CMD_COMPLETE; 1746 hdr->plen = sizeof(*evt) + 1; 1747 1748 evt = (struct hci_ev_cmd_complete *)skb_put(skb, sizeof(*evt)); 1749 evt->ncmd = 0x01; 1750 evt->opcode = cpu_to_le16(opcode); 1751 1752 *skb_put(skb, 1) = 0x00; 1753 1754 bt_cb(skb)->pkt_type = HCI_EVENT_PKT; 1755 1756 return hci_recv_frame(hdev, skb); 1757 } 1758 1759 static int btusb_recv_bulk_intel(struct btusb_data *data, void *buffer, 1760 int count) 1761 { 1762 /* When the device is in bootloader mode, then it can send 1763 * events via the bulk endpoint. These events are treated the 1764 * same way as the ones received from the interrupt endpoint. 1765 */ 1766 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) 1767 return btusb_recv_intr(data, buffer, count); 1768 1769 return btusb_recv_bulk(data, buffer, count); 1770 } 1771 1772 static void btusb_intel_bootup(struct btusb_data *data, const void *ptr, 1773 unsigned int len) 1774 { 1775 const struct intel_bootup *evt = ptr; 1776 1777 if (len != sizeof(*evt)) 1778 return; 1779 1780 if (test_and_clear_bit(BTUSB_BOOTING, &data->flags)) { 1781 smp_mb__after_atomic(); 1782 wake_up_bit(&data->flags, BTUSB_BOOTING); 1783 } 1784 } 1785 1786 static void btusb_intel_secure_send_result(struct btusb_data *data, 1787 const void *ptr, unsigned int len) 1788 { 1789 const struct intel_secure_send_result *evt = ptr; 1790 1791 if (len != sizeof(*evt)) 1792 return; 1793 1794 if (evt->result) 1795 set_bit(BTUSB_FIRMWARE_FAILED, &data->flags); 1796 1797 if (test_and_clear_bit(BTUSB_DOWNLOADING, &data->flags) && 1798 test_bit(BTUSB_FIRMWARE_LOADED, &data->flags)) { 1799 smp_mb__after_atomic(); 1800 wake_up_bit(&data->flags, BTUSB_DOWNLOADING); 1801 } 1802 } 1803 1804 static int btusb_recv_event_intel(struct hci_dev *hdev, struct sk_buff *skb) 1805 { 1806 struct btusb_data *data = hci_get_drvdata(hdev); 1807 1808 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) { 1809 struct hci_event_hdr *hdr = (void *)skb->data; 1810 1811 if (skb->len > HCI_EVENT_HDR_SIZE && hdr->evt == 0xff && 1812 hdr->plen > 0) { 1813 const void *ptr = skb->data + HCI_EVENT_HDR_SIZE + 1; 1814 unsigned int len = skb->len - HCI_EVENT_HDR_SIZE - 1; 1815 1816 switch (skb->data[2]) { 1817 case 0x02: 1818 /* When switching to the operational firmware 1819 * the device sends a vendor specific event 1820 * indicating that the bootup completed. 1821 */ 1822 btusb_intel_bootup(data, ptr, len); 1823 break; 1824 case 0x06: 1825 /* When the firmware loading completes the 1826 * device sends out a vendor specific event 1827 * indicating the result of the firmware 1828 * loading. 1829 */ 1830 btusb_intel_secure_send_result(data, ptr, len); 1831 break; 1832 } 1833 } 1834 } 1835 1836 return hci_recv_frame(hdev, skb); 1837 } 1838 1839 static int btusb_send_frame_intel(struct hci_dev *hdev, struct sk_buff *skb) 1840 { 1841 struct btusb_data *data = hci_get_drvdata(hdev); 1842 struct urb *urb; 1843 1844 BT_DBG("%s", hdev->name); 1845 1846 if (!test_bit(HCI_RUNNING, &hdev->flags)) 1847 return -EBUSY; 1848 1849 switch (bt_cb(skb)->pkt_type) { 1850 case HCI_COMMAND_PKT: 1851 if (test_bit(BTUSB_BOOTLOADER, &data->flags)) { 1852 struct hci_command_hdr *cmd = (void *)skb->data; 1853 __u16 opcode = le16_to_cpu(cmd->opcode); 1854 1855 /* When in bootloader mode and the command 0xfc09 1856 * is received, it needs to be send down the 1857 * bulk endpoint. So allocate a bulk URB instead. 1858 */ 1859 if (opcode == 0xfc09) 1860 urb = alloc_bulk_urb(hdev, skb); 1861 else 1862 urb = alloc_ctrl_urb(hdev, skb); 1863 1864 /* When the 0xfc01 command is issued to boot into 1865 * the operational firmware, it will actually not 1866 * send a command complete event. To keep the flow 1867 * control working inject that event here. 1868 */ 1869 if (opcode == 0xfc01) 1870 inject_cmd_complete(hdev, opcode); 1871 } else { 1872 urb = alloc_ctrl_urb(hdev, skb); 1873 } 1874 if (IS_ERR(urb)) 1875 return PTR_ERR(urb); 1876 1877 hdev->stat.cmd_tx++; 1878 return submit_or_queue_tx_urb(hdev, urb); 1879 1880 case HCI_ACLDATA_PKT: 1881 urb = alloc_bulk_urb(hdev, skb); 1882 if (IS_ERR(urb)) 1883 return PTR_ERR(urb); 1884 1885 hdev->stat.acl_tx++; 1886 return submit_or_queue_tx_urb(hdev, urb); 1887 1888 case HCI_SCODATA_PKT: 1889 if (hci_conn_num(hdev, SCO_LINK) < 1) 1890 return -ENODEV; 1891 1892 urb = alloc_isoc_urb(hdev, skb); 1893 if (IS_ERR(urb)) 1894 return PTR_ERR(urb); 1895 1896 hdev->stat.sco_tx++; 1897 return submit_tx_urb(hdev, urb); 1898 } 1899 1900 return -EILSEQ; 1901 } 1902 1903 static int btusb_setup_intel_new(struct hci_dev *hdev) 1904 { 1905 static const u8 reset_param[] = { 0x00, 0x01, 0x00, 0x01, 1906 0x00, 0x08, 0x04, 0x00 }; 1907 struct btusb_data *data = hci_get_drvdata(hdev); 1908 struct sk_buff *skb; 1909 struct intel_version *ver; 1910 struct intel_boot_params *params; 1911 const struct firmware *fw; 1912 const u8 *fw_ptr; 1913 u32 frag_len; 1914 char fwname[64]; 1915 ktime_t calltime, delta, rettime; 1916 unsigned long long duration; 1917 int err; 1918 1919 BT_DBG("%s", hdev->name); 1920 1921 calltime = ktime_get(); 1922 1923 /* Read the Intel version information to determine if the device 1924 * is in bootloader mode or if it already has operational firmware 1925 * loaded. 1926 */ 1927 skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT); 1928 if (IS_ERR(skb)) { 1929 BT_ERR("%s: Reading Intel version information failed (%ld)", 1930 hdev->name, PTR_ERR(skb)); 1931 return PTR_ERR(skb); 1932 } 1933 1934 if (skb->len != sizeof(*ver)) { 1935 BT_ERR("%s: Intel version event size mismatch", hdev->name); 1936 kfree_skb(skb); 1937 return -EILSEQ; 1938 } 1939 1940 ver = (struct intel_version *)skb->data; 1941 1942 /* The hardware platform number has a fixed value of 0x37 and 1943 * for now only accept this single value. 1944 */ 1945 if (ver->hw_platform != 0x37) { 1946 BT_ERR("%s: Unsupported Intel hardware platform (%u)", 1947 hdev->name, ver->hw_platform); 1948 kfree_skb(skb); 1949 return -EINVAL; 1950 } 1951 1952 /* At the moment only the hardware variant iBT 3.0 (LnP/SfP) is 1953 * supported by this firmware loading method. This check has been 1954 * put in place to ensure correct forward compatibility options 1955 * when newer hardware variants come along. 1956 */ 1957 if (ver->hw_variant != 0x0b) { 1958 BT_ERR("%s: Unsupported Intel hardware variant (%u)", 1959 hdev->name, ver->hw_variant); 1960 kfree_skb(skb); 1961 return -EINVAL; 1962 } 1963 1964 btintel_version_info(hdev, ver); 1965 1966 /* The firmware variant determines if the device is in bootloader 1967 * mode or is running operational firmware. The value 0x06 identifies 1968 * the bootloader and the value 0x23 identifies the operational 1969 * firmware. 1970 * 1971 * When the operational firmware is already present, then only 1972 * the check for valid Bluetooth device address is needed. This 1973 * determines if the device will be added as configured or 1974 * unconfigured controller. 1975 * 1976 * It is not possible to use the Secure Boot Parameters in this 1977 * case since that command is only available in bootloader mode. 1978 */ 1979 if (ver->fw_variant == 0x23) { 1980 kfree_skb(skb); 1981 clear_bit(BTUSB_BOOTLOADER, &data->flags); 1982 btintel_check_bdaddr(hdev); 1983 return 0; 1984 } 1985 1986 /* If the device is not in bootloader mode, then the only possible 1987 * choice is to return an error and abort the device initialization. 1988 */ 1989 if (ver->fw_variant != 0x06) { 1990 BT_ERR("%s: Unsupported Intel firmware variant (%u)", 1991 hdev->name, ver->fw_variant); 1992 kfree_skb(skb); 1993 return -ENODEV; 1994 } 1995 1996 kfree_skb(skb); 1997 1998 /* Read the secure boot parameters to identify the operating 1999 * details of the bootloader. 2000 */ 2001 skb = __hci_cmd_sync(hdev, 0xfc0d, 0, NULL, HCI_INIT_TIMEOUT); 2002 if (IS_ERR(skb)) { 2003 BT_ERR("%s: Reading Intel boot parameters failed (%ld)", 2004 hdev->name, PTR_ERR(skb)); 2005 return PTR_ERR(skb); 2006 } 2007 2008 if (skb->len != sizeof(*params)) { 2009 BT_ERR("%s: Intel boot parameters size mismatch", hdev->name); 2010 kfree_skb(skb); 2011 return -EILSEQ; 2012 } 2013 2014 params = (struct intel_boot_params *)skb->data; 2015 2016 BT_INFO("%s: Device revision is %u", hdev->name, 2017 le16_to_cpu(params->dev_revid)); 2018 2019 BT_INFO("%s: Secure boot is %s", hdev->name, 2020 params->secure_boot ? "enabled" : "disabled"); 2021 2022 BT_INFO("%s: Minimum firmware build %u week %u %u", hdev->name, 2023 params->min_fw_build_nn, params->min_fw_build_cw, 2024 2000 + params->min_fw_build_yy); 2025 2026 /* It is required that every single firmware fragment is acknowledged 2027 * with a command complete event. If the boot parameters indicate 2028 * that this bootloader does not send them, then abort the setup. 2029 */ 2030 if (params->limited_cce != 0x00) { 2031 BT_ERR("%s: Unsupported Intel firmware loading method (%u)", 2032 hdev->name, params->limited_cce); 2033 kfree_skb(skb); 2034 return -EINVAL; 2035 } 2036 2037 /* If the OTP has no valid Bluetooth device address, then there will 2038 * also be no valid address for the operational firmware. 2039 */ 2040 if (!bacmp(¶ms->otp_bdaddr, BDADDR_ANY)) { 2041 BT_INFO("%s: No device address configured", hdev->name); 2042 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks); 2043 } 2044 2045 /* With this Intel bootloader only the hardware variant and device 2046 * revision information are used to select the right firmware. 2047 * 2048 * Currently this bootloader support is limited to hardware variant 2049 * iBT 3.0 (LnP/SfP) which is identified by the value 11 (0x0b). 2050 */ 2051 snprintf(fwname, sizeof(fwname), "intel/ibt-11-%u.sfi", 2052 le16_to_cpu(params->dev_revid)); 2053 2054 err = request_firmware(&fw, fwname, &hdev->dev); 2055 if (err < 0) { 2056 BT_ERR("%s: Failed to load Intel firmware file (%d)", 2057 hdev->name, err); 2058 kfree_skb(skb); 2059 return err; 2060 } 2061 2062 BT_INFO("%s: Found device firmware: %s", hdev->name, fwname); 2063 2064 /* Save the DDC file name for later use to apply once the firmware 2065 * downloading is done. 2066 */ 2067 snprintf(fwname, sizeof(fwname), "intel/ibt-11-%u.ddc", 2068 le16_to_cpu(params->dev_revid)); 2069 2070 kfree_skb(skb); 2071 2072 if (fw->size < 644) { 2073 BT_ERR("%s: Invalid size of firmware file (%zu)", 2074 hdev->name, fw->size); 2075 err = -EBADF; 2076 goto done; 2077 } 2078 2079 set_bit(BTUSB_DOWNLOADING, &data->flags); 2080 2081 /* Start the firmware download transaction with the Init fragment 2082 * represented by the 128 bytes of CSS header. 2083 */ 2084 err = btintel_secure_send(hdev, 0x00, 128, fw->data); 2085 if (err < 0) { 2086 BT_ERR("%s: Failed to send firmware header (%d)", 2087 hdev->name, err); 2088 goto done; 2089 } 2090 2091 /* Send the 256 bytes of public key information from the firmware 2092 * as the PKey fragment. 2093 */ 2094 err = btintel_secure_send(hdev, 0x03, 256, fw->data + 128); 2095 if (err < 0) { 2096 BT_ERR("%s: Failed to send firmware public key (%d)", 2097 hdev->name, err); 2098 goto done; 2099 } 2100 2101 /* Send the 256 bytes of signature information from the firmware 2102 * as the Sign fragment. 2103 */ 2104 err = btintel_secure_send(hdev, 0x02, 256, fw->data + 388); 2105 if (err < 0) { 2106 BT_ERR("%s: Failed to send firmware signature (%d)", 2107 hdev->name, err); 2108 goto done; 2109 } 2110 2111 fw_ptr = fw->data + 644; 2112 frag_len = 0; 2113 2114 while (fw_ptr - fw->data < fw->size) { 2115 struct hci_command_hdr *cmd = (void *)(fw_ptr + frag_len); 2116 2117 frag_len += sizeof(*cmd) + cmd->plen; 2118 2119 /* The parameter length of the secure send command requires 2120 * a 4 byte alignment. It happens so that the firmware file 2121 * contains proper Intel_NOP commands to align the fragments 2122 * as needed. 2123 * 2124 * Send set of commands with 4 byte alignment from the 2125 * firmware data buffer as a single Data fragement. 2126 */ 2127 if (!(frag_len % 4)) { 2128 err = btintel_secure_send(hdev, 0x01, frag_len, fw_ptr); 2129 if (err < 0) { 2130 BT_ERR("%s: Failed to send firmware data (%d)", 2131 hdev->name, err); 2132 goto done; 2133 } 2134 2135 fw_ptr += frag_len; 2136 frag_len = 0; 2137 } 2138 } 2139 2140 set_bit(BTUSB_FIRMWARE_LOADED, &data->flags); 2141 2142 BT_INFO("%s: Waiting for firmware download to complete", hdev->name); 2143 2144 /* Before switching the device into operational mode and with that 2145 * booting the loaded firmware, wait for the bootloader notification 2146 * that all fragments have been successfully received. 2147 * 2148 * When the event processing receives the notification, then the 2149 * BTUSB_DOWNLOADING flag will be cleared. 2150 * 2151 * The firmware loading should not take longer than 5 seconds 2152 * and thus just timeout if that happens and fail the setup 2153 * of this device. 2154 */ 2155 err = wait_on_bit_timeout(&data->flags, BTUSB_DOWNLOADING, 2156 TASK_INTERRUPTIBLE, 2157 msecs_to_jiffies(5000)); 2158 if (err == 1) { 2159 BT_ERR("%s: Firmware loading interrupted", hdev->name); 2160 err = -EINTR; 2161 goto done; 2162 } 2163 2164 if (err) { 2165 BT_ERR("%s: Firmware loading timeout", hdev->name); 2166 err = -ETIMEDOUT; 2167 goto done; 2168 } 2169 2170 if (test_bit(BTUSB_FIRMWARE_FAILED, &data->flags)) { 2171 BT_ERR("%s: Firmware loading failed", hdev->name); 2172 err = -ENOEXEC; 2173 goto done; 2174 } 2175 2176 rettime = ktime_get(); 2177 delta = ktime_sub(rettime, calltime); 2178 duration = (unsigned long long) ktime_to_ns(delta) >> 10; 2179 2180 BT_INFO("%s: Firmware loaded in %llu usecs", hdev->name, duration); 2181 2182 done: 2183 release_firmware(fw); 2184 2185 if (err < 0) 2186 return err; 2187 2188 calltime = ktime_get(); 2189 2190 set_bit(BTUSB_BOOTING, &data->flags); 2191 2192 skb = __hci_cmd_sync(hdev, 0xfc01, sizeof(reset_param), reset_param, 2193 HCI_INIT_TIMEOUT); 2194 if (IS_ERR(skb)) 2195 return PTR_ERR(skb); 2196 2197 kfree_skb(skb); 2198 2199 /* The bootloader will not indicate when the device is ready. This 2200 * is done by the operational firmware sending bootup notification. 2201 * 2202 * Booting into operational firmware should not take longer than 2203 * 1 second. However if that happens, then just fail the setup 2204 * since something went wrong. 2205 */ 2206 BT_INFO("%s: Waiting for device to boot", hdev->name); 2207 2208 err = wait_on_bit_timeout(&data->flags, BTUSB_BOOTING, 2209 TASK_INTERRUPTIBLE, 2210 msecs_to_jiffies(1000)); 2211 2212 if (err == 1) { 2213 BT_ERR("%s: Device boot interrupted", hdev->name); 2214 return -EINTR; 2215 } 2216 2217 if (err) { 2218 BT_ERR("%s: Device boot timeout", hdev->name); 2219 return -ETIMEDOUT; 2220 } 2221 2222 rettime = ktime_get(); 2223 delta = ktime_sub(rettime, calltime); 2224 duration = (unsigned long long) ktime_to_ns(delta) >> 10; 2225 2226 BT_INFO("%s: Device booted in %llu usecs", hdev->name, duration); 2227 2228 clear_bit(BTUSB_BOOTLOADER, &data->flags); 2229 2230 /* Once the device is running in operational mode, it needs to apply 2231 * the device configuration (DDC) parameters. 2232 * 2233 * The device can work without DDC parameters, so even if it fails 2234 * to load the file, no need to fail the setup. 2235 */ 2236 btintel_load_ddc_config(hdev, fwname); 2237 2238 return 0; 2239 } 2240 2241 static int btusb_shutdown_intel(struct hci_dev *hdev) 2242 { 2243 struct sk_buff *skb; 2244 long ret; 2245 2246 /* Some platforms have an issue with BT LED when the interface is 2247 * down or BT radio is turned off, which takes 5 seconds to BT LED 2248 * goes off. This command turns off the BT LED immediately. 2249 */ 2250 skb = __hci_cmd_sync(hdev, 0xfc3f, 0, NULL, HCI_INIT_TIMEOUT); 2251 if (IS_ERR(skb)) { 2252 ret = PTR_ERR(skb); 2253 BT_ERR("%s: turning off Intel device LED failed (%ld)", 2254 hdev->name, ret); 2255 return ret; 2256 } 2257 kfree_skb(skb); 2258 2259 return 0; 2260 } 2261 2262 static int btusb_set_bdaddr_marvell(struct hci_dev *hdev, 2263 const bdaddr_t *bdaddr) 2264 { 2265 struct sk_buff *skb; 2266 u8 buf[8]; 2267 long ret; 2268 2269 buf[0] = 0xfe; 2270 buf[1] = sizeof(bdaddr_t); 2271 memcpy(buf + 2, bdaddr, sizeof(bdaddr_t)); 2272 2273 skb = __hci_cmd_sync(hdev, 0xfc22, sizeof(buf), buf, HCI_INIT_TIMEOUT); 2274 if (IS_ERR(skb)) { 2275 ret = PTR_ERR(skb); 2276 BT_ERR("%s: changing Marvell device address failed (%ld)", 2277 hdev->name, ret); 2278 return ret; 2279 } 2280 kfree_skb(skb); 2281 2282 return 0; 2283 } 2284 2285 static int btusb_set_bdaddr_ath3012(struct hci_dev *hdev, 2286 const bdaddr_t *bdaddr) 2287 { 2288 struct sk_buff *skb; 2289 u8 buf[10]; 2290 long ret; 2291 2292 buf[0] = 0x01; 2293 buf[1] = 0x01; 2294 buf[2] = 0x00; 2295 buf[3] = sizeof(bdaddr_t); 2296 memcpy(buf + 4, bdaddr, sizeof(bdaddr_t)); 2297 2298 skb = __hci_cmd_sync(hdev, 0xfc0b, sizeof(buf), buf, HCI_INIT_TIMEOUT); 2299 if (IS_ERR(skb)) { 2300 ret = PTR_ERR(skb); 2301 BT_ERR("%s: Change address command failed (%ld)", 2302 hdev->name, ret); 2303 return ret; 2304 } 2305 kfree_skb(skb); 2306 2307 return 0; 2308 } 2309 2310 #define QCA_DFU_PACKET_LEN 4096 2311 2312 #define QCA_GET_TARGET_VERSION 0x09 2313 #define QCA_CHECK_STATUS 0x05 2314 #define QCA_DFU_DOWNLOAD 0x01 2315 2316 #define QCA_SYSCFG_UPDATED 0x40 2317 #define QCA_PATCH_UPDATED 0x80 2318 #define QCA_DFU_TIMEOUT 3000 2319 2320 struct qca_version { 2321 __le32 rom_version; 2322 __le32 patch_version; 2323 __le32 ram_version; 2324 __le32 ref_clock; 2325 __u8 reserved[4]; 2326 } __packed; 2327 2328 struct qca_rampatch_version { 2329 __le16 rom_version; 2330 __le16 patch_version; 2331 } __packed; 2332 2333 struct qca_device_info { 2334 u32 rom_version; 2335 u8 rampatch_hdr; /* length of header in rampatch */ 2336 u8 nvm_hdr; /* length of header in NVM */ 2337 u8 ver_offset; /* offset of version structure in rampatch */ 2338 }; 2339 2340 static const struct qca_device_info qca_devices_table[] = { 2341 { 0x00000100, 20, 4, 10 }, /* Rome 1.0 */ 2342 { 0x00000101, 20, 4, 10 }, /* Rome 1.1 */ 2343 { 0x00000200, 28, 4, 18 }, /* Rome 2.0 */ 2344 { 0x00000201, 28, 4, 18 }, /* Rome 2.1 */ 2345 { 0x00000300, 28, 4, 18 }, /* Rome 3.0 */ 2346 { 0x00000302, 28, 4, 18 }, /* Rome 3.2 */ 2347 }; 2348 2349 static int btusb_qca_send_vendor_req(struct hci_dev *hdev, u8 request, 2350 void *data, u16 size) 2351 { 2352 struct btusb_data *btdata = hci_get_drvdata(hdev); 2353 struct usb_device *udev = btdata->udev; 2354 int pipe, err; 2355 u8 *buf; 2356 2357 buf = kmalloc(size, GFP_KERNEL); 2358 if (!buf) 2359 return -ENOMEM; 2360 2361 /* Found some of USB hosts have IOT issues with ours so that we should 2362 * not wait until HCI layer is ready. 2363 */ 2364 pipe = usb_rcvctrlpipe(udev, 0); 2365 err = usb_control_msg(udev, pipe, request, USB_TYPE_VENDOR | USB_DIR_IN, 2366 0, 0, buf, size, USB_CTRL_SET_TIMEOUT); 2367 if (err < 0) { 2368 BT_ERR("%s: Failed to access otp area (%d)", hdev->name, err); 2369 goto done; 2370 } 2371 2372 memcpy(data, buf, size); 2373 2374 done: 2375 kfree(buf); 2376 2377 return err; 2378 } 2379 2380 static int btusb_setup_qca_download_fw(struct hci_dev *hdev, 2381 const struct firmware *firmware, 2382 size_t hdr_size) 2383 { 2384 struct btusb_data *btdata = hci_get_drvdata(hdev); 2385 struct usb_device *udev = btdata->udev; 2386 size_t count, size, sent = 0; 2387 int pipe, len, err; 2388 u8 *buf; 2389 2390 buf = kmalloc(QCA_DFU_PACKET_LEN, GFP_KERNEL); 2391 if (!buf) 2392 return -ENOMEM; 2393 2394 count = firmware->size; 2395 2396 size = min_t(size_t, count, hdr_size); 2397 memcpy(buf, firmware->data, size); 2398 2399 /* USB patches should go down to controller through USB path 2400 * because binary format fits to go down through USB channel. 2401 * USB control path is for patching headers and USB bulk is for 2402 * patch body. 2403 */ 2404 pipe = usb_sndctrlpipe(udev, 0); 2405 err = usb_control_msg(udev, pipe, QCA_DFU_DOWNLOAD, USB_TYPE_VENDOR, 2406 0, 0, buf, size, USB_CTRL_SET_TIMEOUT); 2407 if (err < 0) { 2408 BT_ERR("%s: Failed to send headers (%d)", hdev->name, err); 2409 goto done; 2410 } 2411 2412 sent += size; 2413 count -= size; 2414 2415 while (count) { 2416 size = min_t(size_t, count, QCA_DFU_PACKET_LEN); 2417 2418 memcpy(buf, firmware->data + sent, size); 2419 2420 pipe = usb_sndbulkpipe(udev, 0x02); 2421 err = usb_bulk_msg(udev, pipe, buf, size, &len, 2422 QCA_DFU_TIMEOUT); 2423 if (err < 0) { 2424 BT_ERR("%s: Failed to send body at %zd of %zd (%d)", 2425 hdev->name, sent, firmware->size, err); 2426 break; 2427 } 2428 2429 if (size != len) { 2430 BT_ERR("%s: Failed to get bulk buffer", hdev->name); 2431 err = -EILSEQ; 2432 break; 2433 } 2434 2435 sent += size; 2436 count -= size; 2437 } 2438 2439 done: 2440 kfree(buf); 2441 return err; 2442 } 2443 2444 static int btusb_setup_qca_load_rampatch(struct hci_dev *hdev, 2445 struct qca_version *ver, 2446 const struct qca_device_info *info) 2447 { 2448 struct qca_rampatch_version *rver; 2449 const struct firmware *fw; 2450 u32 ver_rom, ver_patch; 2451 u16 rver_rom, rver_patch; 2452 char fwname[64]; 2453 int err; 2454 2455 ver_rom = le32_to_cpu(ver->rom_version); 2456 ver_patch = le32_to_cpu(ver->patch_version); 2457 2458 snprintf(fwname, sizeof(fwname), "qca/rampatch_usb_%08x.bin", ver_rom); 2459 2460 err = request_firmware(&fw, fwname, &hdev->dev); 2461 if (err) { 2462 BT_ERR("%s: failed to request rampatch file: %s (%d)", 2463 hdev->name, fwname, err); 2464 return err; 2465 } 2466 2467 BT_INFO("%s: using rampatch file: %s", hdev->name, fwname); 2468 2469 rver = (struct qca_rampatch_version *)(fw->data + info->ver_offset); 2470 rver_rom = le16_to_cpu(rver->rom_version); 2471 rver_patch = le16_to_cpu(rver->patch_version); 2472 2473 BT_INFO("%s: QCA: patch rome 0x%x build 0x%x, firmware rome 0x%x " 2474 "build 0x%x", hdev->name, rver_rom, rver_patch, ver_rom, 2475 ver_patch); 2476 2477 if (rver_rom != ver_rom || rver_patch <= ver_patch) { 2478 BT_ERR("%s: rampatch file version did not match with firmware", 2479 hdev->name); 2480 err = -EINVAL; 2481 goto done; 2482 } 2483 2484 err = btusb_setup_qca_download_fw(hdev, fw, info->rampatch_hdr); 2485 2486 done: 2487 release_firmware(fw); 2488 2489 return err; 2490 } 2491 2492 static int btusb_setup_qca_load_nvm(struct hci_dev *hdev, 2493 struct qca_version *ver, 2494 const struct qca_device_info *info) 2495 { 2496 const struct firmware *fw; 2497 char fwname[64]; 2498 int err; 2499 2500 snprintf(fwname, sizeof(fwname), "qca/nvm_usb_%08x.bin", 2501 le32_to_cpu(ver->rom_version)); 2502 2503 err = request_firmware(&fw, fwname, &hdev->dev); 2504 if (err) { 2505 BT_ERR("%s: failed to request NVM file: %s (%d)", 2506 hdev->name, fwname, err); 2507 return err; 2508 } 2509 2510 BT_INFO("%s: using NVM file: %s", hdev->name, fwname); 2511 2512 err = btusb_setup_qca_download_fw(hdev, fw, info->nvm_hdr); 2513 2514 release_firmware(fw); 2515 2516 return err; 2517 } 2518 2519 static int btusb_setup_qca(struct hci_dev *hdev) 2520 { 2521 const struct qca_device_info *info = NULL; 2522 struct qca_version ver; 2523 u32 ver_rom; 2524 u8 status; 2525 int i, err; 2526 2527 err = btusb_qca_send_vendor_req(hdev, QCA_GET_TARGET_VERSION, &ver, 2528 sizeof(ver)); 2529 if (err < 0) 2530 return err; 2531 2532 ver_rom = le32_to_cpu(ver.rom_version); 2533 for (i = 0; i < ARRAY_SIZE(qca_devices_table); i++) { 2534 if (ver_rom == qca_devices_table[i].rom_version) 2535 info = &qca_devices_table[i]; 2536 } 2537 if (!info) { 2538 BT_ERR("%s: don't support firmware rome 0x%x", hdev->name, 2539 ver_rom); 2540 return -ENODEV; 2541 } 2542 2543 err = btusb_qca_send_vendor_req(hdev, QCA_CHECK_STATUS, &status, 2544 sizeof(status)); 2545 if (err < 0) 2546 return err; 2547 2548 if (!(status & QCA_PATCH_UPDATED)) { 2549 err = btusb_setup_qca_load_rampatch(hdev, &ver, info); 2550 if (err < 0) 2551 return err; 2552 } 2553 2554 if (!(status & QCA_SYSCFG_UPDATED)) { 2555 err = btusb_setup_qca_load_nvm(hdev, &ver, info); 2556 if (err < 0) 2557 return err; 2558 } 2559 2560 return 0; 2561 } 2562 2563 static int btusb_probe(struct usb_interface *intf, 2564 const struct usb_device_id *id) 2565 { 2566 struct usb_endpoint_descriptor *ep_desc; 2567 struct btusb_data *data; 2568 struct hci_dev *hdev; 2569 int i, err; 2570 2571 BT_DBG("intf %p id %p", intf, id); 2572 2573 /* interface numbers are hardcoded in the spec */ 2574 if (intf->cur_altsetting->desc.bInterfaceNumber != 0) 2575 return -ENODEV; 2576 2577 if (!id->driver_info) { 2578 const struct usb_device_id *match; 2579 2580 match = usb_match_id(intf, blacklist_table); 2581 if (match) 2582 id = match; 2583 } 2584 2585 if (id->driver_info == BTUSB_IGNORE) 2586 return -ENODEV; 2587 2588 if (id->driver_info & BTUSB_ATH3012) { 2589 struct usb_device *udev = interface_to_usbdev(intf); 2590 2591 /* Old firmware would otherwise let ath3k driver load 2592 * patch and sysconfig files */ 2593 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001) 2594 return -ENODEV; 2595 } 2596 2597 data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL); 2598 if (!data) 2599 return -ENOMEM; 2600 2601 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { 2602 ep_desc = &intf->cur_altsetting->endpoint[i].desc; 2603 2604 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) { 2605 data->intr_ep = ep_desc; 2606 continue; 2607 } 2608 2609 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) { 2610 data->bulk_tx_ep = ep_desc; 2611 continue; 2612 } 2613 2614 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) { 2615 data->bulk_rx_ep = ep_desc; 2616 continue; 2617 } 2618 } 2619 2620 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) 2621 return -ENODEV; 2622 2623 if (id->driver_info & BTUSB_AMP) { 2624 data->cmdreq_type = USB_TYPE_CLASS | 0x01; 2625 data->cmdreq = 0x2b; 2626 } else { 2627 data->cmdreq_type = USB_TYPE_CLASS; 2628 data->cmdreq = 0x00; 2629 } 2630 2631 data->udev = interface_to_usbdev(intf); 2632 data->intf = intf; 2633 2634 INIT_WORK(&data->work, btusb_work); 2635 INIT_WORK(&data->waker, btusb_waker); 2636 init_usb_anchor(&data->deferred); 2637 init_usb_anchor(&data->tx_anchor); 2638 spin_lock_init(&data->txlock); 2639 2640 init_usb_anchor(&data->intr_anchor); 2641 init_usb_anchor(&data->bulk_anchor); 2642 init_usb_anchor(&data->isoc_anchor); 2643 spin_lock_init(&data->rxlock); 2644 2645 if (id->driver_info & BTUSB_INTEL_NEW) { 2646 data->recv_event = btusb_recv_event_intel; 2647 data->recv_bulk = btusb_recv_bulk_intel; 2648 set_bit(BTUSB_BOOTLOADER, &data->flags); 2649 } else { 2650 data->recv_event = hci_recv_frame; 2651 data->recv_bulk = btusb_recv_bulk; 2652 } 2653 2654 hdev = hci_alloc_dev(); 2655 if (!hdev) 2656 return -ENOMEM; 2657 2658 hdev->bus = HCI_USB; 2659 hci_set_drvdata(hdev, data); 2660 2661 if (id->driver_info & BTUSB_AMP) 2662 hdev->dev_type = HCI_AMP; 2663 else 2664 hdev->dev_type = HCI_BREDR; 2665 2666 data->hdev = hdev; 2667 2668 SET_HCIDEV_DEV(hdev, &intf->dev); 2669 2670 hdev->open = btusb_open; 2671 hdev->close = btusb_close; 2672 hdev->flush = btusb_flush; 2673 hdev->send = btusb_send_frame; 2674 hdev->notify = btusb_notify; 2675 2676 if (id->driver_info & BTUSB_BCM92035) 2677 hdev->setup = btusb_setup_bcm92035; 2678 2679 #ifdef CONFIG_BT_HCIBTUSB_BCM 2680 if (id->driver_info & BTUSB_BCM_PATCHRAM) { 2681 hdev->setup = btbcm_setup_patchram; 2682 hdev->set_bdaddr = btbcm_set_bdaddr; 2683 } 2684 2685 if (id->driver_info & BTUSB_BCM_APPLE) 2686 hdev->setup = btbcm_setup_apple; 2687 #endif 2688 2689 if (id->driver_info & BTUSB_INTEL) { 2690 hdev->setup = btusb_setup_intel; 2691 hdev->shutdown = btusb_shutdown_intel; 2692 hdev->set_bdaddr = btintel_set_bdaddr; 2693 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks); 2694 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); 2695 } 2696 2697 if (id->driver_info & BTUSB_INTEL_NEW) { 2698 hdev->send = btusb_send_frame_intel; 2699 hdev->setup = btusb_setup_intel_new; 2700 hdev->hw_error = btintel_hw_error; 2701 hdev->set_bdaddr = btintel_set_bdaddr; 2702 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks); 2703 } 2704 2705 if (id->driver_info & BTUSB_MARVELL) 2706 hdev->set_bdaddr = btusb_set_bdaddr_marvell; 2707 2708 if (id->driver_info & BTUSB_SWAVE) { 2709 set_bit(HCI_QUIRK_FIXUP_INQUIRY_MODE, &hdev->quirks); 2710 set_bit(HCI_QUIRK_BROKEN_LOCAL_COMMANDS, &hdev->quirks); 2711 } 2712 2713 if (id->driver_info & BTUSB_INTEL_BOOT) 2714 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks); 2715 2716 if (id->driver_info & BTUSB_ATH3012) { 2717 hdev->set_bdaddr = btusb_set_bdaddr_ath3012; 2718 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); 2719 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks); 2720 } 2721 2722 if (id->driver_info & BTUSB_QCA_ROME) { 2723 data->setup_on_usb = btusb_setup_qca; 2724 hdev->set_bdaddr = btusb_set_bdaddr_ath3012; 2725 } 2726 2727 #ifdef CONFIG_BT_HCIBTUSB_RTL 2728 if (id->driver_info & BTUSB_REALTEK) { 2729 hdev->setup = btrtl_setup_realtek; 2730 2731 /* Realtek devices lose their updated firmware over suspend, 2732 * but the USB hub doesn't notice any status change. 2733 * Explicitly request a device reset on resume. 2734 */ 2735 set_bit(BTUSB_RESET_RESUME, &data->flags); 2736 } 2737 #endif 2738 2739 if (id->driver_info & BTUSB_AMP) { 2740 /* AMP controllers do not support SCO packets */ 2741 data->isoc = NULL; 2742 } else { 2743 /* Interface numbers are hardcoded in the specification */ 2744 data->isoc = usb_ifnum_to_if(data->udev, 1); 2745 } 2746 2747 if (!reset) 2748 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); 2749 2750 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) { 2751 if (!disable_scofix) 2752 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks); 2753 } 2754 2755 if (id->driver_info & BTUSB_BROKEN_ISOC) 2756 data->isoc = NULL; 2757 2758 if (id->driver_info & BTUSB_DIGIANSWER) { 2759 data->cmdreq_type = USB_TYPE_VENDOR; 2760 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); 2761 } 2762 2763 if (id->driver_info & BTUSB_CSR) { 2764 struct usb_device *udev = data->udev; 2765 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice); 2766 2767 /* Old firmware would otherwise execute USB reset */ 2768 if (bcdDevice < 0x117) 2769 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); 2770 2771 /* Fake CSR devices with broken commands */ 2772 if (bcdDevice <= 0x100 || bcdDevice == 0x134) 2773 hdev->setup = btusb_setup_csr; 2774 2775 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); 2776 } 2777 2778 if (id->driver_info & BTUSB_SNIFFER) { 2779 struct usb_device *udev = data->udev; 2780 2781 /* New sniffer firmware has crippled HCI interface */ 2782 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997) 2783 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks); 2784 } 2785 2786 if (id->driver_info & BTUSB_INTEL_BOOT) { 2787 /* A bug in the bootloader causes that interrupt interface is 2788 * only enabled after receiving SetInterface(0, AltSetting=0). 2789 */ 2790 err = usb_set_interface(data->udev, 0, 0); 2791 if (err < 0) { 2792 BT_ERR("failed to set interface 0, alt 0 %d", err); 2793 hci_free_dev(hdev); 2794 return err; 2795 } 2796 } 2797 2798 if (data->isoc) { 2799 err = usb_driver_claim_interface(&btusb_driver, 2800 data->isoc, data); 2801 if (err < 0) { 2802 hci_free_dev(hdev); 2803 return err; 2804 } 2805 } 2806 2807 err = hci_register_dev(hdev); 2808 if (err < 0) { 2809 hci_free_dev(hdev); 2810 return err; 2811 } 2812 2813 usb_set_intfdata(intf, data); 2814 2815 return 0; 2816 } 2817 2818 static void btusb_disconnect(struct usb_interface *intf) 2819 { 2820 struct btusb_data *data = usb_get_intfdata(intf); 2821 struct hci_dev *hdev; 2822 2823 BT_DBG("intf %p", intf); 2824 2825 if (!data) 2826 return; 2827 2828 hdev = data->hdev; 2829 usb_set_intfdata(data->intf, NULL); 2830 2831 if (data->isoc) 2832 usb_set_intfdata(data->isoc, NULL); 2833 2834 hci_unregister_dev(hdev); 2835 2836 if (intf == data->isoc) 2837 usb_driver_release_interface(&btusb_driver, data->intf); 2838 else if (data->isoc) 2839 usb_driver_release_interface(&btusb_driver, data->isoc); 2840 2841 hci_free_dev(hdev); 2842 } 2843 2844 #ifdef CONFIG_PM 2845 static int btusb_suspend(struct usb_interface *intf, pm_message_t message) 2846 { 2847 struct btusb_data *data = usb_get_intfdata(intf); 2848 2849 BT_DBG("intf %p", intf); 2850 2851 if (data->suspend_count++) 2852 return 0; 2853 2854 spin_lock_irq(&data->txlock); 2855 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) { 2856 set_bit(BTUSB_SUSPENDING, &data->flags); 2857 spin_unlock_irq(&data->txlock); 2858 } else { 2859 spin_unlock_irq(&data->txlock); 2860 data->suspend_count--; 2861 return -EBUSY; 2862 } 2863 2864 cancel_work_sync(&data->work); 2865 2866 btusb_stop_traffic(data); 2867 usb_kill_anchored_urbs(&data->tx_anchor); 2868 2869 /* Optionally request a device reset on resume, but only when 2870 * wakeups are disabled. If wakeups are enabled we assume the 2871 * device will stay powered up throughout suspend. 2872 */ 2873 if (test_bit(BTUSB_RESET_RESUME, &data->flags) && 2874 !device_may_wakeup(&data->udev->dev)) 2875 data->udev->reset_resume = 1; 2876 2877 return 0; 2878 } 2879 2880 static void play_deferred(struct btusb_data *data) 2881 { 2882 struct urb *urb; 2883 int err; 2884 2885 while ((urb = usb_get_from_anchor(&data->deferred))) { 2886 err = usb_submit_urb(urb, GFP_ATOMIC); 2887 if (err < 0) 2888 break; 2889 2890 data->tx_in_flight++; 2891 } 2892 usb_scuttle_anchored_urbs(&data->deferred); 2893 } 2894 2895 static int btusb_resume(struct usb_interface *intf) 2896 { 2897 struct btusb_data *data = usb_get_intfdata(intf); 2898 struct hci_dev *hdev = data->hdev; 2899 int err = 0; 2900 2901 BT_DBG("intf %p", intf); 2902 2903 if (--data->suspend_count) 2904 return 0; 2905 2906 if (!test_bit(HCI_RUNNING, &hdev->flags)) 2907 goto done; 2908 2909 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) { 2910 err = btusb_submit_intr_urb(hdev, GFP_NOIO); 2911 if (err < 0) { 2912 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 2913 goto failed; 2914 } 2915 } 2916 2917 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) { 2918 err = btusb_submit_bulk_urb(hdev, GFP_NOIO); 2919 if (err < 0) { 2920 clear_bit(BTUSB_BULK_RUNNING, &data->flags); 2921 goto failed; 2922 } 2923 2924 btusb_submit_bulk_urb(hdev, GFP_NOIO); 2925 } 2926 2927 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) { 2928 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0) 2929 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 2930 else 2931 btusb_submit_isoc_urb(hdev, GFP_NOIO); 2932 } 2933 2934 spin_lock_irq(&data->txlock); 2935 play_deferred(data); 2936 clear_bit(BTUSB_SUSPENDING, &data->flags); 2937 spin_unlock_irq(&data->txlock); 2938 schedule_work(&data->work); 2939 2940 return 0; 2941 2942 failed: 2943 usb_scuttle_anchored_urbs(&data->deferred); 2944 done: 2945 spin_lock_irq(&data->txlock); 2946 clear_bit(BTUSB_SUSPENDING, &data->flags); 2947 spin_unlock_irq(&data->txlock); 2948 2949 return err; 2950 } 2951 #endif 2952 2953 static struct usb_driver btusb_driver = { 2954 .name = "btusb", 2955 .probe = btusb_probe, 2956 .disconnect = btusb_disconnect, 2957 #ifdef CONFIG_PM 2958 .suspend = btusb_suspend, 2959 .resume = btusb_resume, 2960 #endif 2961 .id_table = btusb_table, 2962 .supports_autosuspend = 1, 2963 .disable_hub_initiated_lpm = 1, 2964 }; 2965 2966 module_usb_driver(btusb_driver); 2967 2968 module_param(disable_scofix, bool, 0644); 2969 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size"); 2970 2971 module_param(force_scofix, bool, 0644); 2972 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size"); 2973 2974 module_param(reset, bool, 0644); 2975 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization"); 2976 2977 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); 2978 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION); 2979 MODULE_VERSION(VERSION); 2980 MODULE_LICENSE("GPL"); 2981