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 28 #include <net/bluetooth/bluetooth.h> 29 #include <net/bluetooth/hci_core.h> 30 31 #define VERSION "0.6" 32 33 static bool ignore_dga; 34 static bool ignore_csr; 35 static bool ignore_sniffer; 36 static bool disable_scofix; 37 static bool force_scofix; 38 39 static bool reset = 1; 40 41 static struct usb_driver btusb_driver; 42 43 #define BTUSB_IGNORE 0x01 44 #define BTUSB_DIGIANSWER 0x02 45 #define BTUSB_CSR 0x04 46 #define BTUSB_SNIFFER 0x08 47 #define BTUSB_BCM92035 0x10 48 #define BTUSB_BROKEN_ISOC 0x20 49 #define BTUSB_WRONG_SCO_MTU 0x40 50 #define BTUSB_ATH3012 0x80 51 #define BTUSB_INTEL 0x100 52 53 static const struct usb_device_id btusb_table[] = { 54 /* Generic Bluetooth USB device */ 55 { USB_DEVICE_INFO(0xe0, 0x01, 0x01) }, 56 57 /* Apple-specific (Broadcom) devices */ 58 { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01) }, 59 60 /* MediaTek MT76x0E */ 61 { USB_DEVICE(0x0e8d, 0x763f) }, 62 63 /* Broadcom SoftSailing reporting vendor specific */ 64 { USB_DEVICE(0x0a5c, 0x21e1) }, 65 66 /* Apple MacBookPro 7,1 */ 67 { USB_DEVICE(0x05ac, 0x8213) }, 68 69 /* Apple iMac11,1 */ 70 { USB_DEVICE(0x05ac, 0x8215) }, 71 72 /* Apple MacBookPro6,2 */ 73 { USB_DEVICE(0x05ac, 0x8218) }, 74 75 /* Apple MacBookAir3,1, MacBookAir3,2 */ 76 { USB_DEVICE(0x05ac, 0x821b) }, 77 78 /* Apple MacBookAir4,1 */ 79 { USB_DEVICE(0x05ac, 0x821f) }, 80 81 /* Apple MacBookPro8,2 */ 82 { USB_DEVICE(0x05ac, 0x821a) }, 83 84 /* Apple MacMini5,1 */ 85 { USB_DEVICE(0x05ac, 0x8281) }, 86 87 /* AVM BlueFRITZ! USB v2.0 */ 88 { USB_DEVICE(0x057c, 0x3800) }, 89 90 /* Bluetooth Ultraport Module from IBM */ 91 { USB_DEVICE(0x04bf, 0x030a) }, 92 93 /* ALPS Modules with non-standard id */ 94 { USB_DEVICE(0x044e, 0x3001) }, 95 { USB_DEVICE(0x044e, 0x3002) }, 96 97 /* Ericsson with non-standard id */ 98 { USB_DEVICE(0x0bdb, 0x1002) }, 99 100 /* Canyon CN-BTU1 with HID interfaces */ 101 { USB_DEVICE(0x0c10, 0x0000) }, 102 103 /* Broadcom BCM20702A0 */ 104 { USB_DEVICE(0x0b05, 0x17b5) }, 105 { USB_DEVICE(0x0b05, 0x17cb) }, 106 { USB_DEVICE(0x04ca, 0x2003) }, 107 { USB_DEVICE(0x0489, 0xe042) }, 108 { USB_DEVICE(0x413c, 0x8197) }, 109 110 /* Foxconn - Hon Hai */ 111 { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01) }, 112 113 /*Broadcom devices with vendor specific id */ 114 { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01) }, 115 116 /* Belkin F8065bf - Broadcom based */ 117 { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01) }, 118 119 { } /* Terminating entry */ 120 }; 121 122 MODULE_DEVICE_TABLE(usb, btusb_table); 123 124 static const struct usb_device_id blacklist_table[] = { 125 /* CSR BlueCore devices */ 126 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR }, 127 128 /* Broadcom BCM2033 without firmware */ 129 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE }, 130 131 /* Atheros 3011 with sflash firmware */ 132 { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE }, 133 { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE }, 134 { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE }, 135 { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE }, 136 { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE }, 137 { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE }, 138 139 /* Atheros AR9285 Malbec with sflash firmware */ 140 { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE }, 141 142 /* Atheros 3012 with sflash firmware */ 143 { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 }, 144 { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 }, 145 { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 }, 146 { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 }, 147 { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 }, 148 { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 }, 149 { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 }, 150 { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 }, 151 { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 }, 152 { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 }, 153 { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 }, 154 { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 }, 155 { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 }, 156 { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 }, 157 { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 }, 158 { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 }, 159 { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 }, 160 { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 }, 161 { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 }, 162 { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 }, 163 { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 }, 164 { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 }, 165 { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 }, 166 { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 }, 167 { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 }, 168 { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 }, 169 170 /* Atheros AR5BBU12 with sflash firmware */ 171 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE }, 172 173 /* Atheros AR5BBU12 with sflash firmware */ 174 { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 }, 175 { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 }, 176 177 /* Broadcom BCM2035 */ 178 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU }, 179 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU }, 180 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 }, 181 182 /* Broadcom BCM2045 */ 183 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU }, 184 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU }, 185 186 /* IBM/Lenovo ThinkPad with Broadcom chip */ 187 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU }, 188 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU }, 189 190 /* HP laptop with Broadcom chip */ 191 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU }, 192 193 /* Dell laptop with Broadcom chip */ 194 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU }, 195 196 /* Dell Wireless 370 and 410 devices */ 197 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU }, 198 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU }, 199 200 /* Belkin F8T012 and F8T013 devices */ 201 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU }, 202 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU }, 203 204 /* Asus WL-BTD202 device */ 205 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU }, 206 207 /* Kensington Bluetooth USB adapter */ 208 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU }, 209 210 /* RTX Telecom based adapters with buggy SCO support */ 211 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC }, 212 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC }, 213 214 /* CONWISE Technology based adapters with buggy SCO support */ 215 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC }, 216 217 /* Digianswer devices */ 218 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER }, 219 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE }, 220 221 /* CSR BlueCore Bluetooth Sniffer */ 222 { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER }, 223 224 /* Frontline ComProbe Bluetooth Sniffer */ 225 { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER }, 226 227 /* Intel Bluetooth device */ 228 { USB_DEVICE(0x8087, 0x07dc), .driver_info = BTUSB_INTEL }, 229 { USB_DEVICE(0x8087, 0x0a2a), .driver_info = BTUSB_INTEL }, 230 231 { } /* Terminating entry */ 232 }; 233 234 #define BTUSB_MAX_ISOC_FRAMES 10 235 236 #define BTUSB_INTR_RUNNING 0 237 #define BTUSB_BULK_RUNNING 1 238 #define BTUSB_ISOC_RUNNING 2 239 #define BTUSB_SUSPENDING 3 240 #define BTUSB_DID_ISO_RESUME 4 241 242 struct btusb_data { 243 struct hci_dev *hdev; 244 struct usb_device *udev; 245 struct usb_interface *intf; 246 struct usb_interface *isoc; 247 248 spinlock_t lock; 249 250 unsigned long flags; 251 252 struct work_struct work; 253 struct work_struct waker; 254 255 struct usb_anchor tx_anchor; 256 struct usb_anchor intr_anchor; 257 struct usb_anchor bulk_anchor; 258 struct usb_anchor isoc_anchor; 259 struct usb_anchor deferred; 260 int tx_in_flight; 261 spinlock_t txlock; 262 263 struct usb_endpoint_descriptor *intr_ep; 264 struct usb_endpoint_descriptor *bulk_tx_ep; 265 struct usb_endpoint_descriptor *bulk_rx_ep; 266 struct usb_endpoint_descriptor *isoc_tx_ep; 267 struct usb_endpoint_descriptor *isoc_rx_ep; 268 269 __u8 cmdreq_type; 270 271 unsigned int sco_num; 272 int isoc_altsetting; 273 int suspend_count; 274 }; 275 276 static int inc_tx(struct btusb_data *data) 277 { 278 unsigned long flags; 279 int rv; 280 281 spin_lock_irqsave(&data->txlock, flags); 282 rv = test_bit(BTUSB_SUSPENDING, &data->flags); 283 if (!rv) 284 data->tx_in_flight++; 285 spin_unlock_irqrestore(&data->txlock, flags); 286 287 return rv; 288 } 289 290 static void btusb_intr_complete(struct urb *urb) 291 { 292 struct hci_dev *hdev = urb->context; 293 struct btusb_data *data = hci_get_drvdata(hdev); 294 int err; 295 296 BT_DBG("%s urb %p status %d count %d", hdev->name, 297 urb, urb->status, urb->actual_length); 298 299 if (!test_bit(HCI_RUNNING, &hdev->flags)) 300 return; 301 302 if (urb->status == 0) { 303 hdev->stat.byte_rx += urb->actual_length; 304 305 if (hci_recv_fragment(hdev, HCI_EVENT_PKT, 306 urb->transfer_buffer, 307 urb->actual_length) < 0) { 308 BT_ERR("%s corrupted event packet", hdev->name); 309 hdev->stat.err_rx++; 310 } 311 } 312 313 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags)) 314 return; 315 316 usb_mark_last_busy(data->udev); 317 usb_anchor_urb(urb, &data->intr_anchor); 318 319 err = usb_submit_urb(urb, GFP_ATOMIC); 320 if (err < 0) { 321 /* -EPERM: urb is being killed; 322 * -ENODEV: device got disconnected */ 323 if (err != -EPERM && err != -ENODEV) 324 BT_ERR("%s urb %p failed to resubmit (%d)", 325 hdev->name, urb, -err); 326 usb_unanchor_urb(urb); 327 } 328 } 329 330 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags) 331 { 332 struct btusb_data *data = hci_get_drvdata(hdev); 333 struct urb *urb; 334 unsigned char *buf; 335 unsigned int pipe; 336 int err, size; 337 338 BT_DBG("%s", hdev->name); 339 340 if (!data->intr_ep) 341 return -ENODEV; 342 343 urb = usb_alloc_urb(0, mem_flags); 344 if (!urb) 345 return -ENOMEM; 346 347 size = le16_to_cpu(data->intr_ep->wMaxPacketSize); 348 349 buf = kmalloc(size, mem_flags); 350 if (!buf) { 351 usb_free_urb(urb); 352 return -ENOMEM; 353 } 354 355 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress); 356 357 usb_fill_int_urb(urb, data->udev, pipe, buf, size, 358 btusb_intr_complete, hdev, 359 data->intr_ep->bInterval); 360 361 urb->transfer_flags |= URB_FREE_BUFFER; 362 363 usb_anchor_urb(urb, &data->intr_anchor); 364 365 err = usb_submit_urb(urb, mem_flags); 366 if (err < 0) { 367 if (err != -EPERM && err != -ENODEV) 368 BT_ERR("%s urb %p submission failed (%d)", 369 hdev->name, urb, -err); 370 usb_unanchor_urb(urb); 371 } 372 373 usb_free_urb(urb); 374 375 return err; 376 } 377 378 static void btusb_bulk_complete(struct urb *urb) 379 { 380 struct hci_dev *hdev = urb->context; 381 struct btusb_data *data = hci_get_drvdata(hdev); 382 int err; 383 384 BT_DBG("%s urb %p status %d count %d", hdev->name, 385 urb, urb->status, urb->actual_length); 386 387 if (!test_bit(HCI_RUNNING, &hdev->flags)) 388 return; 389 390 if (urb->status == 0) { 391 hdev->stat.byte_rx += urb->actual_length; 392 393 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT, 394 urb->transfer_buffer, 395 urb->actual_length) < 0) { 396 BT_ERR("%s corrupted ACL packet", hdev->name); 397 hdev->stat.err_rx++; 398 } 399 } 400 401 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags)) 402 return; 403 404 usb_anchor_urb(urb, &data->bulk_anchor); 405 usb_mark_last_busy(data->udev); 406 407 err = usb_submit_urb(urb, GFP_ATOMIC); 408 if (err < 0) { 409 /* -EPERM: urb is being killed; 410 * -ENODEV: device got disconnected */ 411 if (err != -EPERM && err != -ENODEV) 412 BT_ERR("%s urb %p failed to resubmit (%d)", 413 hdev->name, urb, -err); 414 usb_unanchor_urb(urb); 415 } 416 } 417 418 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags) 419 { 420 struct btusb_data *data = hci_get_drvdata(hdev); 421 struct urb *urb; 422 unsigned char *buf; 423 unsigned int pipe; 424 int err, size = HCI_MAX_FRAME_SIZE; 425 426 BT_DBG("%s", hdev->name); 427 428 if (!data->bulk_rx_ep) 429 return -ENODEV; 430 431 urb = usb_alloc_urb(0, mem_flags); 432 if (!urb) 433 return -ENOMEM; 434 435 buf = kmalloc(size, mem_flags); 436 if (!buf) { 437 usb_free_urb(urb); 438 return -ENOMEM; 439 } 440 441 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress); 442 443 usb_fill_bulk_urb(urb, data->udev, pipe, 444 buf, size, btusb_bulk_complete, hdev); 445 446 urb->transfer_flags |= URB_FREE_BUFFER; 447 448 usb_mark_last_busy(data->udev); 449 usb_anchor_urb(urb, &data->bulk_anchor); 450 451 err = usb_submit_urb(urb, mem_flags); 452 if (err < 0) { 453 if (err != -EPERM && err != -ENODEV) 454 BT_ERR("%s urb %p submission failed (%d)", 455 hdev->name, urb, -err); 456 usb_unanchor_urb(urb); 457 } 458 459 usb_free_urb(urb); 460 461 return err; 462 } 463 464 static void btusb_isoc_complete(struct urb *urb) 465 { 466 struct hci_dev *hdev = urb->context; 467 struct btusb_data *data = hci_get_drvdata(hdev); 468 int i, err; 469 470 BT_DBG("%s urb %p status %d count %d", hdev->name, 471 urb, urb->status, urb->actual_length); 472 473 if (!test_bit(HCI_RUNNING, &hdev->flags)) 474 return; 475 476 if (urb->status == 0) { 477 for (i = 0; i < urb->number_of_packets; i++) { 478 unsigned int offset = urb->iso_frame_desc[i].offset; 479 unsigned int length = urb->iso_frame_desc[i].actual_length; 480 481 if (urb->iso_frame_desc[i].status) 482 continue; 483 484 hdev->stat.byte_rx += length; 485 486 if (hci_recv_fragment(hdev, HCI_SCODATA_PKT, 487 urb->transfer_buffer + offset, 488 length) < 0) { 489 BT_ERR("%s corrupted SCO packet", hdev->name); 490 hdev->stat.err_rx++; 491 } 492 } 493 } 494 495 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags)) 496 return; 497 498 usb_anchor_urb(urb, &data->isoc_anchor); 499 500 err = usb_submit_urb(urb, GFP_ATOMIC); 501 if (err < 0) { 502 /* -EPERM: urb is being killed; 503 * -ENODEV: device got disconnected */ 504 if (err != -EPERM && err != -ENODEV) 505 BT_ERR("%s urb %p failed to resubmit (%d)", 506 hdev->name, urb, -err); 507 usb_unanchor_urb(urb); 508 } 509 } 510 511 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu) 512 { 513 int i, offset = 0; 514 515 BT_DBG("len %d mtu %d", len, mtu); 516 517 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu; 518 i++, offset += mtu, len -= mtu) { 519 urb->iso_frame_desc[i].offset = offset; 520 urb->iso_frame_desc[i].length = mtu; 521 } 522 523 if (len && i < BTUSB_MAX_ISOC_FRAMES) { 524 urb->iso_frame_desc[i].offset = offset; 525 urb->iso_frame_desc[i].length = len; 526 i++; 527 } 528 529 urb->number_of_packets = i; 530 } 531 532 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags) 533 { 534 struct btusb_data *data = hci_get_drvdata(hdev); 535 struct urb *urb; 536 unsigned char *buf; 537 unsigned int pipe; 538 int err, size; 539 540 BT_DBG("%s", hdev->name); 541 542 if (!data->isoc_rx_ep) 543 return -ENODEV; 544 545 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags); 546 if (!urb) 547 return -ENOMEM; 548 549 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) * 550 BTUSB_MAX_ISOC_FRAMES; 551 552 buf = kmalloc(size, mem_flags); 553 if (!buf) { 554 usb_free_urb(urb); 555 return -ENOMEM; 556 } 557 558 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress); 559 560 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete, 561 hdev, data->isoc_rx_ep->bInterval); 562 563 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP; 564 565 __fill_isoc_descriptor(urb, size, 566 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize)); 567 568 usb_anchor_urb(urb, &data->isoc_anchor); 569 570 err = usb_submit_urb(urb, mem_flags); 571 if (err < 0) { 572 if (err != -EPERM && err != -ENODEV) 573 BT_ERR("%s urb %p submission failed (%d)", 574 hdev->name, urb, -err); 575 usb_unanchor_urb(urb); 576 } 577 578 usb_free_urb(urb); 579 580 return err; 581 } 582 583 static void btusb_tx_complete(struct urb *urb) 584 { 585 struct sk_buff *skb = urb->context; 586 struct hci_dev *hdev = (struct hci_dev *) skb->dev; 587 struct btusb_data *data = hci_get_drvdata(hdev); 588 589 BT_DBG("%s urb %p status %d count %d", hdev->name, 590 urb, urb->status, urb->actual_length); 591 592 if (!test_bit(HCI_RUNNING, &hdev->flags)) 593 goto done; 594 595 if (!urb->status) 596 hdev->stat.byte_tx += urb->transfer_buffer_length; 597 else 598 hdev->stat.err_tx++; 599 600 done: 601 spin_lock(&data->txlock); 602 data->tx_in_flight--; 603 spin_unlock(&data->txlock); 604 605 kfree(urb->setup_packet); 606 607 kfree_skb(skb); 608 } 609 610 static void btusb_isoc_tx_complete(struct urb *urb) 611 { 612 struct sk_buff *skb = urb->context; 613 struct hci_dev *hdev = (struct hci_dev *) skb->dev; 614 615 BT_DBG("%s urb %p status %d count %d", hdev->name, 616 urb, urb->status, urb->actual_length); 617 618 if (!test_bit(HCI_RUNNING, &hdev->flags)) 619 goto done; 620 621 if (!urb->status) 622 hdev->stat.byte_tx += urb->transfer_buffer_length; 623 else 624 hdev->stat.err_tx++; 625 626 done: 627 kfree(urb->setup_packet); 628 629 kfree_skb(skb); 630 } 631 632 static int btusb_open(struct hci_dev *hdev) 633 { 634 struct btusb_data *data = hci_get_drvdata(hdev); 635 int err; 636 637 BT_DBG("%s", hdev->name); 638 639 err = usb_autopm_get_interface(data->intf); 640 if (err < 0) 641 return err; 642 643 data->intf->needs_remote_wakeup = 1; 644 645 if (test_and_set_bit(HCI_RUNNING, &hdev->flags)) 646 goto done; 647 648 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags)) 649 goto done; 650 651 err = btusb_submit_intr_urb(hdev, GFP_KERNEL); 652 if (err < 0) 653 goto failed; 654 655 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL); 656 if (err < 0) { 657 usb_kill_anchored_urbs(&data->intr_anchor); 658 goto failed; 659 } 660 661 set_bit(BTUSB_BULK_RUNNING, &data->flags); 662 btusb_submit_bulk_urb(hdev, GFP_KERNEL); 663 664 done: 665 usb_autopm_put_interface(data->intf); 666 return 0; 667 668 failed: 669 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 670 clear_bit(HCI_RUNNING, &hdev->flags); 671 usb_autopm_put_interface(data->intf); 672 return err; 673 } 674 675 static void btusb_stop_traffic(struct btusb_data *data) 676 { 677 usb_kill_anchored_urbs(&data->intr_anchor); 678 usb_kill_anchored_urbs(&data->bulk_anchor); 679 usb_kill_anchored_urbs(&data->isoc_anchor); 680 } 681 682 static int btusb_close(struct hci_dev *hdev) 683 { 684 struct btusb_data *data = hci_get_drvdata(hdev); 685 int err; 686 687 BT_DBG("%s", hdev->name); 688 689 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags)) 690 return 0; 691 692 cancel_work_sync(&data->work); 693 cancel_work_sync(&data->waker); 694 695 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 696 clear_bit(BTUSB_BULK_RUNNING, &data->flags); 697 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 698 699 btusb_stop_traffic(data); 700 err = usb_autopm_get_interface(data->intf); 701 if (err < 0) 702 goto failed; 703 704 data->intf->needs_remote_wakeup = 0; 705 usb_autopm_put_interface(data->intf); 706 707 failed: 708 usb_scuttle_anchored_urbs(&data->deferred); 709 return 0; 710 } 711 712 static int btusb_flush(struct hci_dev *hdev) 713 { 714 struct btusb_data *data = hci_get_drvdata(hdev); 715 716 BT_DBG("%s", hdev->name); 717 718 usb_kill_anchored_urbs(&data->tx_anchor); 719 720 return 0; 721 } 722 723 static int btusb_send_frame(struct hci_dev *hdev, struct sk_buff *skb) 724 { 725 struct btusb_data *data = hci_get_drvdata(hdev); 726 struct usb_ctrlrequest *dr; 727 struct urb *urb; 728 unsigned int pipe; 729 int err; 730 731 BT_DBG("%s", hdev->name); 732 733 if (!test_bit(HCI_RUNNING, &hdev->flags)) 734 return -EBUSY; 735 736 skb->dev = (void *) hdev; 737 738 switch (bt_cb(skb)->pkt_type) { 739 case HCI_COMMAND_PKT: 740 urb = usb_alloc_urb(0, GFP_ATOMIC); 741 if (!urb) 742 return -ENOMEM; 743 744 dr = kmalloc(sizeof(*dr), GFP_ATOMIC); 745 if (!dr) { 746 usb_free_urb(urb); 747 return -ENOMEM; 748 } 749 750 dr->bRequestType = data->cmdreq_type; 751 dr->bRequest = 0; 752 dr->wIndex = 0; 753 dr->wValue = 0; 754 dr->wLength = __cpu_to_le16(skb->len); 755 756 pipe = usb_sndctrlpipe(data->udev, 0x00); 757 758 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr, 759 skb->data, skb->len, btusb_tx_complete, skb); 760 761 hdev->stat.cmd_tx++; 762 break; 763 764 case HCI_ACLDATA_PKT: 765 if (!data->bulk_tx_ep) 766 return -ENODEV; 767 768 urb = usb_alloc_urb(0, GFP_ATOMIC); 769 if (!urb) 770 return -ENOMEM; 771 772 pipe = usb_sndbulkpipe(data->udev, 773 data->bulk_tx_ep->bEndpointAddress); 774 775 usb_fill_bulk_urb(urb, data->udev, pipe, 776 skb->data, skb->len, btusb_tx_complete, skb); 777 778 hdev->stat.acl_tx++; 779 break; 780 781 case HCI_SCODATA_PKT: 782 if (!data->isoc_tx_ep || hci_conn_num(hdev, SCO_LINK) < 1) 783 return -ENODEV; 784 785 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC); 786 if (!urb) 787 return -ENOMEM; 788 789 pipe = usb_sndisocpipe(data->udev, 790 data->isoc_tx_ep->bEndpointAddress); 791 792 usb_fill_int_urb(urb, data->udev, pipe, 793 skb->data, skb->len, btusb_isoc_tx_complete, 794 skb, data->isoc_tx_ep->bInterval); 795 796 urb->transfer_flags = URB_ISO_ASAP; 797 798 __fill_isoc_descriptor(urb, skb->len, 799 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize)); 800 801 hdev->stat.sco_tx++; 802 goto skip_waking; 803 804 default: 805 return -EILSEQ; 806 } 807 808 err = inc_tx(data); 809 if (err) { 810 usb_anchor_urb(urb, &data->deferred); 811 schedule_work(&data->waker); 812 err = 0; 813 goto done; 814 } 815 816 skip_waking: 817 usb_anchor_urb(urb, &data->tx_anchor); 818 819 err = usb_submit_urb(urb, GFP_ATOMIC); 820 if (err < 0) { 821 if (err != -EPERM && err != -ENODEV) 822 BT_ERR("%s urb %p submission failed (%d)", 823 hdev->name, urb, -err); 824 kfree(urb->setup_packet); 825 usb_unanchor_urb(urb); 826 } else { 827 usb_mark_last_busy(data->udev); 828 } 829 830 done: 831 usb_free_urb(urb); 832 return err; 833 } 834 835 static void btusb_notify(struct hci_dev *hdev, unsigned int evt) 836 { 837 struct btusb_data *data = hci_get_drvdata(hdev); 838 839 BT_DBG("%s evt %d", hdev->name, evt); 840 841 if (hci_conn_num(hdev, SCO_LINK) != data->sco_num) { 842 data->sco_num = hci_conn_num(hdev, SCO_LINK); 843 schedule_work(&data->work); 844 } 845 } 846 847 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting) 848 { 849 struct btusb_data *data = hci_get_drvdata(hdev); 850 struct usb_interface *intf = data->isoc; 851 struct usb_endpoint_descriptor *ep_desc; 852 int i, err; 853 854 if (!data->isoc) 855 return -ENODEV; 856 857 err = usb_set_interface(data->udev, 1, altsetting); 858 if (err < 0) { 859 BT_ERR("%s setting interface failed (%d)", hdev->name, -err); 860 return err; 861 } 862 863 data->isoc_altsetting = altsetting; 864 865 data->isoc_tx_ep = NULL; 866 data->isoc_rx_ep = NULL; 867 868 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { 869 ep_desc = &intf->cur_altsetting->endpoint[i].desc; 870 871 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) { 872 data->isoc_tx_ep = ep_desc; 873 continue; 874 } 875 876 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) { 877 data->isoc_rx_ep = ep_desc; 878 continue; 879 } 880 } 881 882 if (!data->isoc_tx_ep || !data->isoc_rx_ep) { 883 BT_ERR("%s invalid SCO descriptors", hdev->name); 884 return -ENODEV; 885 } 886 887 return 0; 888 } 889 890 static void btusb_work(struct work_struct *work) 891 { 892 struct btusb_data *data = container_of(work, struct btusb_data, work); 893 struct hci_dev *hdev = data->hdev; 894 int new_alts; 895 int err; 896 897 if (data->sco_num > 0) { 898 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) { 899 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf); 900 if (err < 0) { 901 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 902 usb_kill_anchored_urbs(&data->isoc_anchor); 903 return; 904 } 905 906 set_bit(BTUSB_DID_ISO_RESUME, &data->flags); 907 } 908 909 if (hdev->voice_setting & 0x0020) { 910 static const int alts[3] = { 2, 4, 5 }; 911 new_alts = alts[data->sco_num - 1]; 912 } else { 913 new_alts = data->sco_num; 914 } 915 916 if (data->isoc_altsetting != new_alts) { 917 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 918 usb_kill_anchored_urbs(&data->isoc_anchor); 919 920 if (__set_isoc_interface(hdev, new_alts) < 0) 921 return; 922 } 923 924 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) { 925 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0) 926 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 927 else 928 btusb_submit_isoc_urb(hdev, GFP_KERNEL); 929 } 930 } else { 931 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 932 usb_kill_anchored_urbs(&data->isoc_anchor); 933 934 __set_isoc_interface(hdev, 0); 935 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags)) 936 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf); 937 } 938 } 939 940 static void btusb_waker(struct work_struct *work) 941 { 942 struct btusb_data *data = container_of(work, struct btusb_data, waker); 943 int err; 944 945 err = usb_autopm_get_interface(data->intf); 946 if (err < 0) 947 return; 948 949 usb_autopm_put_interface(data->intf); 950 } 951 952 static int btusb_setup_bcm92035(struct hci_dev *hdev) 953 { 954 struct sk_buff *skb; 955 u8 val = 0x00; 956 957 BT_DBG("%s", hdev->name); 958 959 skb = __hci_cmd_sync(hdev, 0xfc3b, 1, &val, HCI_INIT_TIMEOUT); 960 if (IS_ERR(skb)) 961 BT_ERR("BCM92035 command failed (%ld)", -PTR_ERR(skb)); 962 else 963 kfree_skb(skb); 964 965 return 0; 966 } 967 968 static int btusb_setup_csr(struct hci_dev *hdev) 969 { 970 struct hci_rp_read_local_version *rp; 971 struct sk_buff *skb; 972 int ret; 973 974 BT_DBG("%s", hdev->name); 975 976 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL, 977 HCI_INIT_TIMEOUT); 978 if (IS_ERR(skb)) { 979 BT_ERR("Reading local version failed (%ld)", -PTR_ERR(skb)); 980 return -PTR_ERR(skb); 981 } 982 983 rp = (struct hci_rp_read_local_version *) skb->data; 984 985 if (!rp->status) { 986 if (le16_to_cpu(rp->manufacturer) != 10) { 987 /* Clear the reset quirk since this is not an actual 988 * early Bluetooth 1.1 device from CSR. 989 */ 990 clear_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); 991 992 /* These fake CSR controllers have all a broken 993 * stored link key handling and so just disable it. 994 */ 995 set_bit(HCI_QUIRK_BROKEN_STORED_LINK_KEY, 996 &hdev->quirks); 997 } 998 } 999 1000 ret = -bt_to_errno(rp->status); 1001 1002 kfree_skb(skb); 1003 1004 return ret; 1005 } 1006 1007 struct intel_version { 1008 u8 status; 1009 u8 hw_platform; 1010 u8 hw_variant; 1011 u8 hw_revision; 1012 u8 fw_variant; 1013 u8 fw_revision; 1014 u8 fw_build_num; 1015 u8 fw_build_ww; 1016 u8 fw_build_yy; 1017 u8 fw_patch_num; 1018 } __packed; 1019 1020 static const struct firmware *btusb_setup_intel_get_fw(struct hci_dev *hdev, 1021 struct intel_version *ver) 1022 { 1023 const struct firmware *fw; 1024 char fwname[64]; 1025 int ret; 1026 1027 snprintf(fwname, sizeof(fwname), 1028 "intel/ibt-hw-%x.%x.%x-fw-%x.%x.%x.%x.%x.bseq", 1029 ver->hw_platform, ver->hw_variant, ver->hw_revision, 1030 ver->fw_variant, ver->fw_revision, ver->fw_build_num, 1031 ver->fw_build_ww, ver->fw_build_yy); 1032 1033 ret = request_firmware(&fw, fwname, &hdev->dev); 1034 if (ret < 0) { 1035 if (ret == -EINVAL) { 1036 BT_ERR("%s Intel firmware file request failed (%d)", 1037 hdev->name, ret); 1038 return NULL; 1039 } 1040 1041 BT_ERR("%s failed to open Intel firmware file: %s(%d)", 1042 hdev->name, fwname, ret); 1043 1044 /* If the correct firmware patch file is not found, use the 1045 * default firmware patch file instead 1046 */ 1047 snprintf(fwname, sizeof(fwname), "intel/ibt-hw-%x.%x.bseq", 1048 ver->hw_platform, ver->hw_variant); 1049 if (request_firmware(&fw, fwname, &hdev->dev) < 0) { 1050 BT_ERR("%s failed to open default Intel fw file: %s", 1051 hdev->name, fwname); 1052 return NULL; 1053 } 1054 } 1055 1056 BT_INFO("%s: Intel Bluetooth firmware file: %s", hdev->name, fwname); 1057 1058 return fw; 1059 } 1060 1061 static int btusb_setup_intel_patching(struct hci_dev *hdev, 1062 const struct firmware *fw, 1063 const u8 **fw_ptr, int *disable_patch) 1064 { 1065 struct sk_buff *skb; 1066 struct hci_command_hdr *cmd; 1067 const u8 *cmd_param; 1068 struct hci_event_hdr *evt = NULL; 1069 const u8 *evt_param = NULL; 1070 int remain = fw->size - (*fw_ptr - fw->data); 1071 1072 /* The first byte indicates the types of the patch command or event. 1073 * 0x01 means HCI command and 0x02 is HCI event. If the first bytes 1074 * in the current firmware buffer doesn't start with 0x01 or 1075 * the size of remain buffer is smaller than HCI command header, 1076 * the firmware file is corrupted and it should stop the patching 1077 * process. 1078 */ 1079 if (remain > HCI_COMMAND_HDR_SIZE && *fw_ptr[0] != 0x01) { 1080 BT_ERR("%s Intel fw corrupted: invalid cmd read", hdev->name); 1081 return -EINVAL; 1082 } 1083 (*fw_ptr)++; 1084 remain--; 1085 1086 cmd = (struct hci_command_hdr *)(*fw_ptr); 1087 *fw_ptr += sizeof(*cmd); 1088 remain -= sizeof(*cmd); 1089 1090 /* Ensure that the remain firmware data is long enough than the length 1091 * of command parameter. If not, the firmware file is corrupted. 1092 */ 1093 if (remain < cmd->plen) { 1094 BT_ERR("%s Intel fw corrupted: invalid cmd len", hdev->name); 1095 return -EFAULT; 1096 } 1097 1098 /* If there is a command that loads a patch in the firmware 1099 * file, then enable the patch upon success, otherwise just 1100 * disable the manufacturer mode, for example patch activation 1101 * is not required when the default firmware patch file is used 1102 * because there are no patch data to load. 1103 */ 1104 if (*disable_patch && le16_to_cpu(cmd->opcode) == 0xfc8e) 1105 *disable_patch = 0; 1106 1107 cmd_param = *fw_ptr; 1108 *fw_ptr += cmd->plen; 1109 remain -= cmd->plen; 1110 1111 /* This reads the expected events when the above command is sent to the 1112 * device. Some vendor commands expects more than one events, for 1113 * example command status event followed by vendor specific event. 1114 * For this case, it only keeps the last expected event. so the command 1115 * can be sent with __hci_cmd_sync_ev() which returns the sk_buff of 1116 * last expected event. 1117 */ 1118 while (remain > HCI_EVENT_HDR_SIZE && *fw_ptr[0] == 0x02) { 1119 (*fw_ptr)++; 1120 remain--; 1121 1122 evt = (struct hci_event_hdr *)(*fw_ptr); 1123 *fw_ptr += sizeof(*evt); 1124 remain -= sizeof(*evt); 1125 1126 if (remain < evt->plen) { 1127 BT_ERR("%s Intel fw corrupted: invalid evt len", 1128 hdev->name); 1129 return -EFAULT; 1130 } 1131 1132 evt_param = *fw_ptr; 1133 *fw_ptr += evt->plen; 1134 remain -= evt->plen; 1135 } 1136 1137 /* Every HCI commands in the firmware file has its correspond event. 1138 * If event is not found or remain is smaller than zero, the firmware 1139 * file is corrupted. 1140 */ 1141 if (!evt || !evt_param || remain < 0) { 1142 BT_ERR("%s Intel fw corrupted: invalid evt read", hdev->name); 1143 return -EFAULT; 1144 } 1145 1146 skb = __hci_cmd_sync_ev(hdev, le16_to_cpu(cmd->opcode), cmd->plen, 1147 cmd_param, evt->evt, HCI_INIT_TIMEOUT); 1148 if (IS_ERR(skb)) { 1149 BT_ERR("%s sending Intel patch command (0x%4.4x) failed (%ld)", 1150 hdev->name, cmd->opcode, PTR_ERR(skb)); 1151 return PTR_ERR(skb); 1152 } 1153 1154 /* It ensures that the returned event matches the event data read from 1155 * the firmware file. At fist, it checks the length and then 1156 * the contents of the event. 1157 */ 1158 if (skb->len != evt->plen) { 1159 BT_ERR("%s mismatch event length (opcode 0x%4.4x)", hdev->name, 1160 le16_to_cpu(cmd->opcode)); 1161 kfree_skb(skb); 1162 return -EFAULT; 1163 } 1164 1165 if (memcmp(skb->data, evt_param, evt->plen)) { 1166 BT_ERR("%s mismatch event parameter (opcode 0x%4.4x)", 1167 hdev->name, le16_to_cpu(cmd->opcode)); 1168 kfree_skb(skb); 1169 return -EFAULT; 1170 } 1171 kfree_skb(skb); 1172 1173 return 0; 1174 } 1175 1176 static int btusb_setup_intel(struct hci_dev *hdev) 1177 { 1178 struct sk_buff *skb; 1179 const struct firmware *fw; 1180 const u8 *fw_ptr; 1181 int disable_patch; 1182 struct intel_version *ver; 1183 1184 const u8 mfg_enable[] = { 0x01, 0x00 }; 1185 const u8 mfg_disable[] = { 0x00, 0x00 }; 1186 const u8 mfg_reset_deactivate[] = { 0x00, 0x01 }; 1187 const u8 mfg_reset_activate[] = { 0x00, 0x02 }; 1188 1189 BT_DBG("%s", hdev->name); 1190 1191 /* The controller has a bug with the first HCI command sent to it 1192 * returning number of completed commands as zero. This would stall the 1193 * command processing in the Bluetooth core. 1194 * 1195 * As a workaround, send HCI Reset command first which will reset the 1196 * number of completed commands and allow normal command processing 1197 * from now on. 1198 */ 1199 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT); 1200 if (IS_ERR(skb)) { 1201 BT_ERR("%s sending initial HCI reset command failed (%ld)", 1202 hdev->name, PTR_ERR(skb)); 1203 return PTR_ERR(skb); 1204 } 1205 kfree_skb(skb); 1206 1207 /* Read Intel specific controller version first to allow selection of 1208 * which firmware file to load. 1209 * 1210 * The returned information are hardware variant and revision plus 1211 * firmware variant, revision and build number. 1212 */ 1213 skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_INIT_TIMEOUT); 1214 if (IS_ERR(skb)) { 1215 BT_ERR("%s reading Intel fw version command failed (%ld)", 1216 hdev->name, PTR_ERR(skb)); 1217 return PTR_ERR(skb); 1218 } 1219 1220 if (skb->len != sizeof(*ver)) { 1221 BT_ERR("%s Intel version event length mismatch", hdev->name); 1222 kfree_skb(skb); 1223 return -EIO; 1224 } 1225 1226 ver = (struct intel_version *)skb->data; 1227 if (ver->status) { 1228 BT_ERR("%s Intel fw version event failed (%02x)", hdev->name, 1229 ver->status); 1230 kfree_skb(skb); 1231 return -bt_to_errno(ver->status); 1232 } 1233 1234 BT_INFO("%s: read Intel version: %02x%02x%02x%02x%02x%02x%02x%02x%02x", 1235 hdev->name, ver->hw_platform, ver->hw_variant, 1236 ver->hw_revision, ver->fw_variant, ver->fw_revision, 1237 ver->fw_build_num, ver->fw_build_ww, ver->fw_build_yy, 1238 ver->fw_patch_num); 1239 1240 /* fw_patch_num indicates the version of patch the device currently 1241 * have. If there is no patch data in the device, it is always 0x00. 1242 * So, if it is other than 0x00, no need to patch the deivce again. 1243 */ 1244 if (ver->fw_patch_num) { 1245 BT_INFO("%s: Intel device is already patched. patch num: %02x", 1246 hdev->name, ver->fw_patch_num); 1247 kfree_skb(skb); 1248 return 0; 1249 } 1250 1251 /* Opens the firmware patch file based on the firmware version read 1252 * from the controller. If it fails to open the matching firmware 1253 * patch file, it tries to open the default firmware patch file. 1254 * If no patch file is found, allow the device to operate without 1255 * a patch. 1256 */ 1257 fw = btusb_setup_intel_get_fw(hdev, ver); 1258 if (!fw) { 1259 kfree_skb(skb); 1260 return 0; 1261 } 1262 fw_ptr = fw->data; 1263 1264 /* This Intel specific command enables the manufacturer mode of the 1265 * controller. 1266 * 1267 * Only while this mode is enabled, the driver can download the 1268 * firmware patch data and configuration parameters. 1269 */ 1270 skb = __hci_cmd_sync(hdev, 0xfc11, 2, mfg_enable, HCI_INIT_TIMEOUT); 1271 if (IS_ERR(skb)) { 1272 BT_ERR("%s entering Intel manufacturer mode failed (%ld)", 1273 hdev->name, PTR_ERR(skb)); 1274 release_firmware(fw); 1275 return PTR_ERR(skb); 1276 } 1277 1278 if (skb->data[0]) { 1279 u8 evt_status = skb->data[0]; 1280 BT_ERR("%s enable Intel manufacturer mode event failed (%02x)", 1281 hdev->name, evt_status); 1282 kfree_skb(skb); 1283 release_firmware(fw); 1284 return -bt_to_errno(evt_status); 1285 } 1286 kfree_skb(skb); 1287 1288 disable_patch = 1; 1289 1290 /* The firmware data file consists of list of Intel specific HCI 1291 * commands and its expected events. The first byte indicates the 1292 * type of the message, either HCI command or HCI event. 1293 * 1294 * It reads the command and its expected event from the firmware file, 1295 * and send to the controller. Once __hci_cmd_sync_ev() returns, 1296 * the returned event is compared with the event read from the firmware 1297 * file and it will continue until all the messages are downloaded to 1298 * the controller. 1299 * 1300 * Once the firmware patching is completed successfully, 1301 * the manufacturer mode is disabled with reset and activating the 1302 * downloaded patch. 1303 * 1304 * If the firmware patching fails, the manufacturer mode is 1305 * disabled with reset and deactivating the patch. 1306 * 1307 * If the default patch file is used, no reset is done when disabling 1308 * the manufacturer. 1309 */ 1310 while (fw->size > fw_ptr - fw->data) { 1311 int ret; 1312 1313 ret = btusb_setup_intel_patching(hdev, fw, &fw_ptr, 1314 &disable_patch); 1315 if (ret < 0) 1316 goto exit_mfg_deactivate; 1317 } 1318 1319 release_firmware(fw); 1320 1321 if (disable_patch) 1322 goto exit_mfg_disable; 1323 1324 /* Patching completed successfully and disable the manufacturer mode 1325 * with reset and activate the downloaded firmware patches. 1326 */ 1327 skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_activate), 1328 mfg_reset_activate, HCI_INIT_TIMEOUT); 1329 if (IS_ERR(skb)) { 1330 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)", 1331 hdev->name, PTR_ERR(skb)); 1332 return PTR_ERR(skb); 1333 } 1334 kfree_skb(skb); 1335 1336 BT_INFO("%s: Intel Bluetooth firmware patch completed and activated", 1337 hdev->name); 1338 1339 return 0; 1340 1341 exit_mfg_disable: 1342 /* Disable the manufacturer mode without reset */ 1343 skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_disable), mfg_disable, 1344 HCI_INIT_TIMEOUT); 1345 if (IS_ERR(skb)) { 1346 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)", 1347 hdev->name, PTR_ERR(skb)); 1348 return PTR_ERR(skb); 1349 } 1350 kfree_skb(skb); 1351 1352 BT_INFO("%s: Intel Bluetooth firmware patch completed", hdev->name); 1353 return 0; 1354 1355 exit_mfg_deactivate: 1356 release_firmware(fw); 1357 1358 /* Patching failed. Disable the manufacturer mode with reset and 1359 * deactivate the downloaded firmware patches. 1360 */ 1361 skb = __hci_cmd_sync(hdev, 0xfc11, sizeof(mfg_reset_deactivate), 1362 mfg_reset_deactivate, HCI_INIT_TIMEOUT); 1363 if (IS_ERR(skb)) { 1364 BT_ERR("%s exiting Intel manufacturer mode failed (%ld)", 1365 hdev->name, PTR_ERR(skb)); 1366 return PTR_ERR(skb); 1367 } 1368 kfree_skb(skb); 1369 1370 BT_INFO("%s: Intel Bluetooth firmware patch completed and deactivated", 1371 hdev->name); 1372 1373 return 0; 1374 } 1375 1376 static int btusb_probe(struct usb_interface *intf, 1377 const struct usb_device_id *id) 1378 { 1379 struct usb_endpoint_descriptor *ep_desc; 1380 struct btusb_data *data; 1381 struct hci_dev *hdev; 1382 int i, err; 1383 1384 BT_DBG("intf %p id %p", intf, id); 1385 1386 /* interface numbers are hardcoded in the spec */ 1387 if (intf->cur_altsetting->desc.bInterfaceNumber != 0) 1388 return -ENODEV; 1389 1390 if (!id->driver_info) { 1391 const struct usb_device_id *match; 1392 match = usb_match_id(intf, blacklist_table); 1393 if (match) 1394 id = match; 1395 } 1396 1397 if (id->driver_info == BTUSB_IGNORE) 1398 return -ENODEV; 1399 1400 if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER) 1401 return -ENODEV; 1402 1403 if (ignore_csr && id->driver_info & BTUSB_CSR) 1404 return -ENODEV; 1405 1406 if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER) 1407 return -ENODEV; 1408 1409 if (id->driver_info & BTUSB_ATH3012) { 1410 struct usb_device *udev = interface_to_usbdev(intf); 1411 1412 /* Old firmware would otherwise let ath3k driver load 1413 * patch and sysconfig files */ 1414 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001) 1415 return -ENODEV; 1416 } 1417 1418 data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL); 1419 if (!data) 1420 return -ENOMEM; 1421 1422 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { 1423 ep_desc = &intf->cur_altsetting->endpoint[i].desc; 1424 1425 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) { 1426 data->intr_ep = ep_desc; 1427 continue; 1428 } 1429 1430 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) { 1431 data->bulk_tx_ep = ep_desc; 1432 continue; 1433 } 1434 1435 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) { 1436 data->bulk_rx_ep = ep_desc; 1437 continue; 1438 } 1439 } 1440 1441 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) 1442 return -ENODEV; 1443 1444 data->cmdreq_type = USB_TYPE_CLASS; 1445 1446 data->udev = interface_to_usbdev(intf); 1447 data->intf = intf; 1448 1449 spin_lock_init(&data->lock); 1450 1451 INIT_WORK(&data->work, btusb_work); 1452 INIT_WORK(&data->waker, btusb_waker); 1453 spin_lock_init(&data->txlock); 1454 1455 init_usb_anchor(&data->tx_anchor); 1456 init_usb_anchor(&data->intr_anchor); 1457 init_usb_anchor(&data->bulk_anchor); 1458 init_usb_anchor(&data->isoc_anchor); 1459 init_usb_anchor(&data->deferred); 1460 1461 hdev = hci_alloc_dev(); 1462 if (!hdev) 1463 return -ENOMEM; 1464 1465 hdev->bus = HCI_USB; 1466 hci_set_drvdata(hdev, data); 1467 1468 data->hdev = hdev; 1469 1470 SET_HCIDEV_DEV(hdev, &intf->dev); 1471 1472 hdev->open = btusb_open; 1473 hdev->close = btusb_close; 1474 hdev->flush = btusb_flush; 1475 hdev->send = btusb_send_frame; 1476 hdev->notify = btusb_notify; 1477 1478 if (id->driver_info & BTUSB_BCM92035) 1479 hdev->setup = btusb_setup_bcm92035; 1480 1481 if (id->driver_info & BTUSB_INTEL) { 1482 usb_enable_autosuspend(data->udev); 1483 hdev->setup = btusb_setup_intel; 1484 } 1485 1486 /* Interface numbers are hardcoded in the specification */ 1487 data->isoc = usb_ifnum_to_if(data->udev, 1); 1488 1489 if (!reset) 1490 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); 1491 1492 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) { 1493 if (!disable_scofix) 1494 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks); 1495 } 1496 1497 if (id->driver_info & BTUSB_BROKEN_ISOC) 1498 data->isoc = NULL; 1499 1500 if (id->driver_info & BTUSB_DIGIANSWER) { 1501 data->cmdreq_type = USB_TYPE_VENDOR; 1502 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); 1503 } 1504 1505 if (id->driver_info & BTUSB_CSR) { 1506 struct usb_device *udev = data->udev; 1507 u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice); 1508 1509 /* Old firmware would otherwise execute USB reset */ 1510 if (bcdDevice < 0x117) 1511 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); 1512 1513 /* Fake CSR devices with broken commands */ 1514 if (bcdDevice <= 0x100) 1515 hdev->setup = btusb_setup_csr; 1516 } 1517 1518 if (id->driver_info & BTUSB_SNIFFER) { 1519 struct usb_device *udev = data->udev; 1520 1521 /* New sniffer firmware has crippled HCI interface */ 1522 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997) 1523 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks); 1524 1525 data->isoc = NULL; 1526 } 1527 1528 if (data->isoc) { 1529 err = usb_driver_claim_interface(&btusb_driver, 1530 data->isoc, data); 1531 if (err < 0) { 1532 hci_free_dev(hdev); 1533 return err; 1534 } 1535 } 1536 1537 err = hci_register_dev(hdev); 1538 if (err < 0) { 1539 hci_free_dev(hdev); 1540 return err; 1541 } 1542 1543 usb_set_intfdata(intf, data); 1544 1545 return 0; 1546 } 1547 1548 static void btusb_disconnect(struct usb_interface *intf) 1549 { 1550 struct btusb_data *data = usb_get_intfdata(intf); 1551 struct hci_dev *hdev; 1552 1553 BT_DBG("intf %p", intf); 1554 1555 if (!data) 1556 return; 1557 1558 hdev = data->hdev; 1559 usb_set_intfdata(data->intf, NULL); 1560 1561 if (data->isoc) 1562 usb_set_intfdata(data->isoc, NULL); 1563 1564 hci_unregister_dev(hdev); 1565 1566 if (intf == data->isoc) 1567 usb_driver_release_interface(&btusb_driver, data->intf); 1568 else if (data->isoc) 1569 usb_driver_release_interface(&btusb_driver, data->isoc); 1570 1571 hci_free_dev(hdev); 1572 } 1573 1574 #ifdef CONFIG_PM 1575 static int btusb_suspend(struct usb_interface *intf, pm_message_t message) 1576 { 1577 struct btusb_data *data = usb_get_intfdata(intf); 1578 1579 BT_DBG("intf %p", intf); 1580 1581 if (data->suspend_count++) 1582 return 0; 1583 1584 spin_lock_irq(&data->txlock); 1585 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) { 1586 set_bit(BTUSB_SUSPENDING, &data->flags); 1587 spin_unlock_irq(&data->txlock); 1588 } else { 1589 spin_unlock_irq(&data->txlock); 1590 data->suspend_count--; 1591 return -EBUSY; 1592 } 1593 1594 cancel_work_sync(&data->work); 1595 1596 btusb_stop_traffic(data); 1597 usb_kill_anchored_urbs(&data->tx_anchor); 1598 1599 return 0; 1600 } 1601 1602 static void play_deferred(struct btusb_data *data) 1603 { 1604 struct urb *urb; 1605 int err; 1606 1607 while ((urb = usb_get_from_anchor(&data->deferred))) { 1608 err = usb_submit_urb(urb, GFP_ATOMIC); 1609 if (err < 0) 1610 break; 1611 1612 data->tx_in_flight++; 1613 } 1614 usb_scuttle_anchored_urbs(&data->deferred); 1615 } 1616 1617 static int btusb_resume(struct usb_interface *intf) 1618 { 1619 struct btusb_data *data = usb_get_intfdata(intf); 1620 struct hci_dev *hdev = data->hdev; 1621 int err = 0; 1622 1623 BT_DBG("intf %p", intf); 1624 1625 if (--data->suspend_count) 1626 return 0; 1627 1628 if (!test_bit(HCI_RUNNING, &hdev->flags)) 1629 goto done; 1630 1631 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) { 1632 err = btusb_submit_intr_urb(hdev, GFP_NOIO); 1633 if (err < 0) { 1634 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 1635 goto failed; 1636 } 1637 } 1638 1639 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) { 1640 err = btusb_submit_bulk_urb(hdev, GFP_NOIO); 1641 if (err < 0) { 1642 clear_bit(BTUSB_BULK_RUNNING, &data->flags); 1643 goto failed; 1644 } 1645 1646 btusb_submit_bulk_urb(hdev, GFP_NOIO); 1647 } 1648 1649 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) { 1650 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0) 1651 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1652 else 1653 btusb_submit_isoc_urb(hdev, GFP_NOIO); 1654 } 1655 1656 spin_lock_irq(&data->txlock); 1657 play_deferred(data); 1658 clear_bit(BTUSB_SUSPENDING, &data->flags); 1659 spin_unlock_irq(&data->txlock); 1660 schedule_work(&data->work); 1661 1662 return 0; 1663 1664 failed: 1665 usb_scuttle_anchored_urbs(&data->deferred); 1666 done: 1667 spin_lock_irq(&data->txlock); 1668 clear_bit(BTUSB_SUSPENDING, &data->flags); 1669 spin_unlock_irq(&data->txlock); 1670 1671 return err; 1672 } 1673 #endif 1674 1675 static struct usb_driver btusb_driver = { 1676 .name = "btusb", 1677 .probe = btusb_probe, 1678 .disconnect = btusb_disconnect, 1679 #ifdef CONFIG_PM 1680 .suspend = btusb_suspend, 1681 .resume = btusb_resume, 1682 #endif 1683 .id_table = btusb_table, 1684 .supports_autosuspend = 1, 1685 .disable_hub_initiated_lpm = 1, 1686 }; 1687 1688 module_usb_driver(btusb_driver); 1689 1690 module_param(ignore_dga, bool, 0644); 1691 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001"); 1692 1693 module_param(ignore_csr, bool, 0644); 1694 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001"); 1695 1696 module_param(ignore_sniffer, bool, 0644); 1697 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002"); 1698 1699 module_param(disable_scofix, bool, 0644); 1700 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size"); 1701 1702 module_param(force_scofix, bool, 0644); 1703 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size"); 1704 1705 module_param(reset, bool, 0644); 1706 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization"); 1707 1708 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); 1709 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION); 1710 MODULE_VERSION(VERSION); 1711 MODULE_LICENSE("GPL"); 1712