1 /* 2 * 3 * Bluetooth HCI UART driver 4 * 5 * Copyright (C) 2000-2001 Qualcomm Incorporated 6 * Copyright (C) 2002-2003 Maxim Krasnyansky <maxk@qualcomm.com> 7 * Copyright (C) 2004-2005 Marcel Holtmann <marcel@holtmann.org> 8 * 9 * 10 * This program is free software; you can redistribute it and/or modify 11 * it under the terms of the GNU General Public License as published by 12 * the Free Software Foundation; either version 2 of the License, or 13 * (at your option) any later version. 14 * 15 * This program is distributed in the hope that it will be useful, 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 * GNU General Public License for more details. 19 * 20 * You should have received a copy of the GNU General Public License 21 * along with this program; if not, write to the Free Software 22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 23 * 24 */ 25 26 #include <linux/module.h> 27 28 #include <linux/kernel.h> 29 #include <linux/init.h> 30 #include <linux/types.h> 31 #include <linux/fcntl.h> 32 #include <linux/interrupt.h> 33 #include <linux/ptrace.h> 34 #include <linux/poll.h> 35 36 #include <linux/slab.h> 37 #include <linux/tty.h> 38 #include <linux/errno.h> 39 #include <linux/string.h> 40 #include <linux/signal.h> 41 #include <linux/ioctl.h> 42 #include <linux/skbuff.h> 43 #include <linux/firmware.h> 44 45 #include <net/bluetooth/bluetooth.h> 46 #include <net/bluetooth/hci_core.h> 47 48 #include "btintel.h" 49 #include "btbcm.h" 50 #include "hci_uart.h" 51 52 #define VERSION "2.3" 53 54 static const struct hci_uart_proto *hup[HCI_UART_MAX_PROTO]; 55 56 int hci_uart_register_proto(const struct hci_uart_proto *p) 57 { 58 if (p->id >= HCI_UART_MAX_PROTO) 59 return -EINVAL; 60 61 if (hup[p->id]) 62 return -EEXIST; 63 64 hup[p->id] = p; 65 66 BT_INFO("HCI UART protocol %s registered", p->name); 67 68 return 0; 69 } 70 71 int hci_uart_unregister_proto(const struct hci_uart_proto *p) 72 { 73 if (p->id >= HCI_UART_MAX_PROTO) 74 return -EINVAL; 75 76 if (!hup[p->id]) 77 return -EINVAL; 78 79 hup[p->id] = NULL; 80 81 return 0; 82 } 83 84 static const struct hci_uart_proto *hci_uart_get_proto(unsigned int id) 85 { 86 if (id >= HCI_UART_MAX_PROTO) 87 return NULL; 88 89 return hup[id]; 90 } 91 92 static inline void hci_uart_tx_complete(struct hci_uart *hu, int pkt_type) 93 { 94 struct hci_dev *hdev = hu->hdev; 95 96 /* Update HCI stat counters */ 97 switch (pkt_type) { 98 case HCI_COMMAND_PKT: 99 hdev->stat.cmd_tx++; 100 break; 101 102 case HCI_ACLDATA_PKT: 103 hdev->stat.acl_tx++; 104 break; 105 106 case HCI_SCODATA_PKT: 107 hdev->stat.sco_tx++; 108 break; 109 } 110 } 111 112 static inline struct sk_buff *hci_uart_dequeue(struct hci_uart *hu) 113 { 114 struct sk_buff *skb = hu->tx_skb; 115 116 if (!skb) { 117 if (test_bit(HCI_UART_PROTO_READY, &hu->flags)) 118 skb = hu->proto->dequeue(hu); 119 } else { 120 hu->tx_skb = NULL; 121 } 122 123 return skb; 124 } 125 126 int hci_uart_tx_wakeup(struct hci_uart *hu) 127 { 128 if (!test_bit(HCI_UART_PROTO_READY, &hu->flags)) 129 return 0; 130 131 if (test_and_set_bit(HCI_UART_SENDING, &hu->tx_state)) { 132 set_bit(HCI_UART_TX_WAKEUP, &hu->tx_state); 133 return 0; 134 } 135 136 BT_DBG(""); 137 138 schedule_work(&hu->write_work); 139 140 return 0; 141 } 142 EXPORT_SYMBOL_GPL(hci_uart_tx_wakeup); 143 144 static void hci_uart_write_work(struct work_struct *work) 145 { 146 struct hci_uart *hu = container_of(work, struct hci_uart, write_work); 147 struct tty_struct *tty = hu->tty; 148 struct hci_dev *hdev = hu->hdev; 149 struct sk_buff *skb; 150 151 /* REVISIT: should we cope with bad skbs or ->write() returning 152 * and error value ? 153 */ 154 155 restart: 156 clear_bit(HCI_UART_TX_WAKEUP, &hu->tx_state); 157 158 while ((skb = hci_uart_dequeue(hu))) { 159 int len; 160 161 set_bit(TTY_DO_WRITE_WAKEUP, &tty->flags); 162 len = tty->ops->write(tty, skb->data, skb->len); 163 hdev->stat.byte_tx += len; 164 165 skb_pull(skb, len); 166 if (skb->len) { 167 hu->tx_skb = skb; 168 break; 169 } 170 171 hci_uart_tx_complete(hu, hci_skb_pkt_type(skb)); 172 kfree_skb(skb); 173 } 174 175 if (test_bit(HCI_UART_TX_WAKEUP, &hu->tx_state)) 176 goto restart; 177 178 clear_bit(HCI_UART_SENDING, &hu->tx_state); 179 } 180 181 static void hci_uart_init_work(struct work_struct *work) 182 { 183 struct hci_uart *hu = container_of(work, struct hci_uart, init_ready); 184 int err; 185 struct hci_dev *hdev; 186 187 if (!test_and_clear_bit(HCI_UART_INIT_PENDING, &hu->hdev_flags)) 188 return; 189 190 err = hci_register_dev(hu->hdev); 191 if (err < 0) { 192 BT_ERR("Can't register HCI device"); 193 hdev = hu->hdev; 194 hu->hdev = NULL; 195 hci_free_dev(hdev); 196 clear_bit(HCI_UART_PROTO_READY, &hu->flags); 197 hu->proto->close(hu); 198 return; 199 } 200 201 set_bit(HCI_UART_REGISTERED, &hu->flags); 202 } 203 204 int hci_uart_init_ready(struct hci_uart *hu) 205 { 206 if (!test_bit(HCI_UART_INIT_PENDING, &hu->hdev_flags)) 207 return -EALREADY; 208 209 schedule_work(&hu->init_ready); 210 211 return 0; 212 } 213 214 /* ------- Interface to HCI layer ------ */ 215 /* Initialize device */ 216 static int hci_uart_open(struct hci_dev *hdev) 217 { 218 BT_DBG("%s %p", hdev->name, hdev); 219 220 /* Nothing to do for UART driver */ 221 return 0; 222 } 223 224 /* Reset device */ 225 static int hci_uart_flush(struct hci_dev *hdev) 226 { 227 struct hci_uart *hu = hci_get_drvdata(hdev); 228 struct tty_struct *tty = hu->tty; 229 230 BT_DBG("hdev %p tty %p", hdev, tty); 231 232 if (hu->tx_skb) { 233 kfree_skb(hu->tx_skb); hu->tx_skb = NULL; 234 } 235 236 /* Flush any pending characters in the driver and discipline. */ 237 tty_ldisc_flush(tty); 238 tty_driver_flush_buffer(tty); 239 240 if (test_bit(HCI_UART_PROTO_READY, &hu->flags)) 241 hu->proto->flush(hu); 242 243 return 0; 244 } 245 246 /* Close device */ 247 static int hci_uart_close(struct hci_dev *hdev) 248 { 249 BT_DBG("hdev %p", hdev); 250 251 hci_uart_flush(hdev); 252 hdev->flush = NULL; 253 return 0; 254 } 255 256 /* Send frames from HCI layer */ 257 static int hci_uart_send_frame(struct hci_dev *hdev, struct sk_buff *skb) 258 { 259 struct hci_uart *hu = hci_get_drvdata(hdev); 260 261 BT_DBG("%s: type %d len %d", hdev->name, hci_skb_pkt_type(skb), 262 skb->len); 263 264 if (!test_bit(HCI_UART_PROTO_READY, &hu->flags)) 265 return -EUNATCH; 266 267 hu->proto->enqueue(hu, skb); 268 269 hci_uart_tx_wakeup(hu); 270 271 return 0; 272 } 273 274 /* Flow control or un-flow control the device */ 275 void hci_uart_set_flow_control(struct hci_uart *hu, bool enable) 276 { 277 struct tty_struct *tty = hu->tty; 278 struct ktermios ktermios; 279 int status; 280 unsigned int set = 0; 281 unsigned int clear = 0; 282 283 if (enable) { 284 /* Disable hardware flow control */ 285 ktermios = tty->termios; 286 ktermios.c_cflag &= ~CRTSCTS; 287 status = tty_set_termios(tty, &ktermios); 288 BT_DBG("Disabling hardware flow control: %s", 289 status ? "failed" : "success"); 290 291 /* Clear RTS to prevent the device from sending */ 292 /* Most UARTs need OUT2 to enable interrupts */ 293 status = tty->driver->ops->tiocmget(tty); 294 BT_DBG("Current tiocm 0x%x", status); 295 296 set &= ~(TIOCM_OUT2 | TIOCM_RTS); 297 clear = ~set; 298 set &= TIOCM_DTR | TIOCM_RTS | TIOCM_OUT1 | 299 TIOCM_OUT2 | TIOCM_LOOP; 300 clear &= TIOCM_DTR | TIOCM_RTS | TIOCM_OUT1 | 301 TIOCM_OUT2 | TIOCM_LOOP; 302 status = tty->driver->ops->tiocmset(tty, set, clear); 303 BT_DBG("Clearing RTS: %s", status ? "failed" : "success"); 304 } else { 305 /* Set RTS to allow the device to send again */ 306 status = tty->driver->ops->tiocmget(tty); 307 BT_DBG("Current tiocm 0x%x", status); 308 309 set |= (TIOCM_OUT2 | TIOCM_RTS); 310 clear = ~set; 311 set &= TIOCM_DTR | TIOCM_RTS | TIOCM_OUT1 | 312 TIOCM_OUT2 | TIOCM_LOOP; 313 clear &= TIOCM_DTR | TIOCM_RTS | TIOCM_OUT1 | 314 TIOCM_OUT2 | TIOCM_LOOP; 315 status = tty->driver->ops->tiocmset(tty, set, clear); 316 BT_DBG("Setting RTS: %s", status ? "failed" : "success"); 317 318 /* Re-enable hardware flow control */ 319 ktermios = tty->termios; 320 ktermios.c_cflag |= CRTSCTS; 321 status = tty_set_termios(tty, &ktermios); 322 BT_DBG("Enabling hardware flow control: %s", 323 status ? "failed" : "success"); 324 } 325 } 326 327 void hci_uart_set_speeds(struct hci_uart *hu, unsigned int init_speed, 328 unsigned int oper_speed) 329 { 330 hu->init_speed = init_speed; 331 hu->oper_speed = oper_speed; 332 } 333 334 void hci_uart_set_baudrate(struct hci_uart *hu, unsigned int speed) 335 { 336 struct tty_struct *tty = hu->tty; 337 struct ktermios ktermios; 338 339 ktermios = tty->termios; 340 ktermios.c_cflag &= ~CBAUD; 341 tty_termios_encode_baud_rate(&ktermios, speed, speed); 342 343 /* tty_set_termios() return not checked as it is always 0 */ 344 tty_set_termios(tty, &ktermios); 345 346 BT_DBG("%s: New tty speeds: %d/%d", hu->hdev->name, 347 tty->termios.c_ispeed, tty->termios.c_ospeed); 348 } 349 350 static int hci_uart_setup(struct hci_dev *hdev) 351 { 352 struct hci_uart *hu = hci_get_drvdata(hdev); 353 struct hci_rp_read_local_version *ver; 354 struct sk_buff *skb; 355 unsigned int speed; 356 int err; 357 358 /* Init speed if any */ 359 if (hu->init_speed) 360 speed = hu->init_speed; 361 else if (hu->proto->init_speed) 362 speed = hu->proto->init_speed; 363 else 364 speed = 0; 365 366 if (speed) 367 hci_uart_set_baudrate(hu, speed); 368 369 /* Operational speed if any */ 370 if (hu->oper_speed) 371 speed = hu->oper_speed; 372 else if (hu->proto->oper_speed) 373 speed = hu->proto->oper_speed; 374 else 375 speed = 0; 376 377 if (hu->proto->set_baudrate && speed) { 378 err = hu->proto->set_baudrate(hu, speed); 379 if (!err) 380 hci_uart_set_baudrate(hu, speed); 381 } 382 383 if (hu->proto->setup) 384 return hu->proto->setup(hu); 385 386 if (!test_bit(HCI_UART_VND_DETECT, &hu->hdev_flags)) 387 return 0; 388 389 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL, 390 HCI_INIT_TIMEOUT); 391 if (IS_ERR(skb)) { 392 BT_ERR("%s: Reading local version information failed (%ld)", 393 hdev->name, PTR_ERR(skb)); 394 return 0; 395 } 396 397 if (skb->len != sizeof(*ver)) { 398 BT_ERR("%s: Event length mismatch for version information", 399 hdev->name); 400 goto done; 401 } 402 403 ver = (struct hci_rp_read_local_version *)skb->data; 404 405 switch (le16_to_cpu(ver->manufacturer)) { 406 #ifdef CONFIG_BT_HCIUART_INTEL 407 case 2: 408 hdev->set_bdaddr = btintel_set_bdaddr; 409 btintel_check_bdaddr(hdev); 410 break; 411 #endif 412 #ifdef CONFIG_BT_HCIUART_BCM 413 case 15: 414 hdev->set_bdaddr = btbcm_set_bdaddr; 415 btbcm_check_bdaddr(hdev); 416 break; 417 #endif 418 } 419 420 done: 421 kfree_skb(skb); 422 return 0; 423 } 424 425 /* ------ LDISC part ------ */ 426 /* hci_uart_tty_open 427 * 428 * Called when line discipline changed to HCI_UART. 429 * 430 * Arguments: 431 * tty pointer to tty info structure 432 * Return Value: 433 * 0 if success, otherwise error code 434 */ 435 static int hci_uart_tty_open(struct tty_struct *tty) 436 { 437 struct hci_uart *hu; 438 439 BT_DBG("tty %p", tty); 440 441 /* Error if the tty has no write op instead of leaving an exploitable 442 hole */ 443 if (tty->ops->write == NULL) 444 return -EOPNOTSUPP; 445 446 hu = kzalloc(sizeof(struct hci_uart), GFP_KERNEL); 447 if (!hu) { 448 BT_ERR("Can't allocate control structure"); 449 return -ENFILE; 450 } 451 452 tty->disc_data = hu; 453 hu->tty = tty; 454 tty->receive_room = 65536; 455 456 /* disable alignment support by default */ 457 hu->alignment = 1; 458 hu->padding = 0; 459 460 INIT_WORK(&hu->init_ready, hci_uart_init_work); 461 INIT_WORK(&hu->write_work, hci_uart_write_work); 462 463 /* Flush any pending characters in the driver */ 464 tty_driver_flush_buffer(tty); 465 466 return 0; 467 } 468 469 /* hci_uart_tty_close() 470 * 471 * Called when the line discipline is changed to something 472 * else, the tty is closed, or the tty detects a hangup. 473 */ 474 static void hci_uart_tty_close(struct tty_struct *tty) 475 { 476 struct hci_uart *hu = tty->disc_data; 477 struct hci_dev *hdev; 478 479 BT_DBG("tty %p", tty); 480 481 /* Detach from the tty */ 482 tty->disc_data = NULL; 483 484 if (!hu) 485 return; 486 487 hdev = hu->hdev; 488 if (hdev) 489 hci_uart_close(hdev); 490 491 cancel_work_sync(&hu->write_work); 492 493 if (test_and_clear_bit(HCI_UART_PROTO_READY, &hu->flags)) { 494 if (hdev) { 495 if (test_bit(HCI_UART_REGISTERED, &hu->flags)) 496 hci_unregister_dev(hdev); 497 hci_free_dev(hdev); 498 } 499 hu->proto->close(hu); 500 } 501 clear_bit(HCI_UART_PROTO_SET, &hu->flags); 502 503 kfree(hu); 504 } 505 506 /* hci_uart_tty_wakeup() 507 * 508 * Callback for transmit wakeup. Called when low level 509 * device driver can accept more send data. 510 * 511 * Arguments: tty pointer to associated tty instance data 512 * Return Value: None 513 */ 514 static void hci_uart_tty_wakeup(struct tty_struct *tty) 515 { 516 struct hci_uart *hu = tty->disc_data; 517 518 BT_DBG(""); 519 520 if (!hu) 521 return; 522 523 clear_bit(TTY_DO_WRITE_WAKEUP, &tty->flags); 524 525 if (tty != hu->tty) 526 return; 527 528 if (test_bit(HCI_UART_PROTO_READY, &hu->flags)) 529 hci_uart_tx_wakeup(hu); 530 } 531 532 /* hci_uart_tty_receive() 533 * 534 * Called by tty low level driver when receive data is 535 * available. 536 * 537 * Arguments: tty pointer to tty isntance data 538 * data pointer to received data 539 * flags pointer to flags for data 540 * count count of received data in bytes 541 * 542 * Return Value: None 543 */ 544 static void hci_uart_tty_receive(struct tty_struct *tty, const u8 *data, 545 char *flags, int count) 546 { 547 struct hci_uart *hu = tty->disc_data; 548 549 if (!hu || tty != hu->tty) 550 return; 551 552 if (!test_bit(HCI_UART_PROTO_READY, &hu->flags)) 553 return; 554 555 /* It does not need a lock here as it is already protected by a mutex in 556 * tty caller 557 */ 558 hu->proto->recv(hu, data, count); 559 560 if (hu->hdev) 561 hu->hdev->stat.byte_rx += count; 562 563 tty_unthrottle(tty); 564 } 565 566 static int hci_uart_register_dev(struct hci_uart *hu) 567 { 568 struct hci_dev *hdev; 569 570 BT_DBG(""); 571 572 /* Initialize and register HCI device */ 573 hdev = hci_alloc_dev(); 574 if (!hdev) { 575 BT_ERR("Can't allocate HCI device"); 576 return -ENOMEM; 577 } 578 579 hu->hdev = hdev; 580 581 hdev->bus = HCI_UART; 582 hci_set_drvdata(hdev, hu); 583 584 /* Only when vendor specific setup callback is provided, consider 585 * the manufacturer information valid. This avoids filling in the 586 * value for Ericsson when nothing is specified. 587 */ 588 if (hu->proto->setup) 589 hdev->manufacturer = hu->proto->manufacturer; 590 591 hdev->open = hci_uart_open; 592 hdev->close = hci_uart_close; 593 hdev->flush = hci_uart_flush; 594 hdev->send = hci_uart_send_frame; 595 hdev->setup = hci_uart_setup; 596 SET_HCIDEV_DEV(hdev, hu->tty->dev); 597 598 if (test_bit(HCI_UART_RAW_DEVICE, &hu->hdev_flags)) 599 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks); 600 601 if (test_bit(HCI_UART_EXT_CONFIG, &hu->hdev_flags)) 602 set_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks); 603 604 if (!test_bit(HCI_UART_RESET_ON_INIT, &hu->hdev_flags)) 605 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); 606 607 if (test_bit(HCI_UART_CREATE_AMP, &hu->hdev_flags)) 608 hdev->dev_type = HCI_AMP; 609 else 610 hdev->dev_type = HCI_PRIMARY; 611 612 if (test_bit(HCI_UART_INIT_PENDING, &hu->hdev_flags)) 613 return 0; 614 615 if (hci_register_dev(hdev) < 0) { 616 BT_ERR("Can't register HCI device"); 617 hu->hdev = NULL; 618 hci_free_dev(hdev); 619 return -ENODEV; 620 } 621 622 set_bit(HCI_UART_REGISTERED, &hu->flags); 623 624 return 0; 625 } 626 627 static int hci_uart_set_proto(struct hci_uart *hu, int id) 628 { 629 const struct hci_uart_proto *p; 630 int err; 631 632 p = hci_uart_get_proto(id); 633 if (!p) 634 return -EPROTONOSUPPORT; 635 636 err = p->open(hu); 637 if (err) 638 return err; 639 640 hu->proto = p; 641 set_bit(HCI_UART_PROTO_READY, &hu->flags); 642 643 err = hci_uart_register_dev(hu); 644 if (err) { 645 clear_bit(HCI_UART_PROTO_READY, &hu->flags); 646 p->close(hu); 647 return err; 648 } 649 650 return 0; 651 } 652 653 static int hci_uart_set_flags(struct hci_uart *hu, unsigned long flags) 654 { 655 unsigned long valid_flags = BIT(HCI_UART_RAW_DEVICE) | 656 BIT(HCI_UART_RESET_ON_INIT) | 657 BIT(HCI_UART_CREATE_AMP) | 658 BIT(HCI_UART_INIT_PENDING) | 659 BIT(HCI_UART_EXT_CONFIG) | 660 BIT(HCI_UART_VND_DETECT); 661 662 if (flags & ~valid_flags) 663 return -EINVAL; 664 665 hu->hdev_flags = flags; 666 667 return 0; 668 } 669 670 /* hci_uart_tty_ioctl() 671 * 672 * Process IOCTL system call for the tty device. 673 * 674 * Arguments: 675 * 676 * tty pointer to tty instance data 677 * file pointer to open file object for device 678 * cmd IOCTL command code 679 * arg argument for IOCTL call (cmd dependent) 680 * 681 * Return Value: Command dependent 682 */ 683 static int hci_uart_tty_ioctl(struct tty_struct *tty, struct file *file, 684 unsigned int cmd, unsigned long arg) 685 { 686 struct hci_uart *hu = tty->disc_data; 687 int err = 0; 688 689 BT_DBG(""); 690 691 /* Verify the status of the device */ 692 if (!hu) 693 return -EBADF; 694 695 switch (cmd) { 696 case HCIUARTSETPROTO: 697 if (!test_and_set_bit(HCI_UART_PROTO_SET, &hu->flags)) { 698 err = hci_uart_set_proto(hu, arg); 699 if (err) 700 clear_bit(HCI_UART_PROTO_SET, &hu->flags); 701 } else 702 err = -EBUSY; 703 break; 704 705 case HCIUARTGETPROTO: 706 if (test_bit(HCI_UART_PROTO_SET, &hu->flags)) 707 err = hu->proto->id; 708 else 709 err = -EUNATCH; 710 break; 711 712 case HCIUARTGETDEVICE: 713 if (test_bit(HCI_UART_REGISTERED, &hu->flags)) 714 err = hu->hdev->id; 715 else 716 err = -EUNATCH; 717 break; 718 719 case HCIUARTSETFLAGS: 720 if (test_bit(HCI_UART_PROTO_SET, &hu->flags)) 721 err = -EBUSY; 722 else 723 err = hci_uart_set_flags(hu, arg); 724 break; 725 726 case HCIUARTGETFLAGS: 727 err = hu->hdev_flags; 728 break; 729 730 default: 731 err = n_tty_ioctl_helper(tty, file, cmd, arg); 732 break; 733 } 734 735 return err; 736 } 737 738 /* 739 * We don't provide read/write/poll interface for user space. 740 */ 741 static ssize_t hci_uart_tty_read(struct tty_struct *tty, struct file *file, 742 unsigned char __user *buf, size_t nr) 743 { 744 return 0; 745 } 746 747 static ssize_t hci_uart_tty_write(struct tty_struct *tty, struct file *file, 748 const unsigned char *data, size_t count) 749 { 750 return 0; 751 } 752 753 static unsigned int hci_uart_tty_poll(struct tty_struct *tty, 754 struct file *filp, poll_table *wait) 755 { 756 return 0; 757 } 758 759 static int __init hci_uart_init(void) 760 { 761 static struct tty_ldisc_ops hci_uart_ldisc; 762 int err; 763 764 BT_INFO("HCI UART driver ver %s", VERSION); 765 766 /* Register the tty discipline */ 767 768 memset(&hci_uart_ldisc, 0, sizeof(hci_uart_ldisc)); 769 hci_uart_ldisc.magic = TTY_LDISC_MAGIC; 770 hci_uart_ldisc.name = "n_hci"; 771 hci_uart_ldisc.open = hci_uart_tty_open; 772 hci_uart_ldisc.close = hci_uart_tty_close; 773 hci_uart_ldisc.read = hci_uart_tty_read; 774 hci_uart_ldisc.write = hci_uart_tty_write; 775 hci_uart_ldisc.ioctl = hci_uart_tty_ioctl; 776 hci_uart_ldisc.poll = hci_uart_tty_poll; 777 hci_uart_ldisc.receive_buf = hci_uart_tty_receive; 778 hci_uart_ldisc.write_wakeup = hci_uart_tty_wakeup; 779 hci_uart_ldisc.owner = THIS_MODULE; 780 781 err = tty_register_ldisc(N_HCI, &hci_uart_ldisc); 782 if (err) { 783 BT_ERR("HCI line discipline registration failed. (%d)", err); 784 return err; 785 } 786 787 #ifdef CONFIG_BT_HCIUART_H4 788 h4_init(); 789 #endif 790 #ifdef CONFIG_BT_HCIUART_BCSP 791 bcsp_init(); 792 #endif 793 #ifdef CONFIG_BT_HCIUART_LL 794 ll_init(); 795 #endif 796 #ifdef CONFIG_BT_HCIUART_ATH3K 797 ath_init(); 798 #endif 799 #ifdef CONFIG_BT_HCIUART_3WIRE 800 h5_init(); 801 #endif 802 #ifdef CONFIG_BT_HCIUART_INTEL 803 intel_init(); 804 #endif 805 #ifdef CONFIG_BT_HCIUART_BCM 806 bcm_init(); 807 #endif 808 #ifdef CONFIG_BT_HCIUART_QCA 809 qca_init(); 810 #endif 811 #ifdef CONFIG_BT_HCIUART_AG6XX 812 ag6xx_init(); 813 #endif 814 #ifdef CONFIG_BT_HCIUART_MRVL 815 mrvl_init(); 816 #endif 817 818 return 0; 819 } 820 821 static void __exit hci_uart_exit(void) 822 { 823 int err; 824 825 #ifdef CONFIG_BT_HCIUART_H4 826 h4_deinit(); 827 #endif 828 #ifdef CONFIG_BT_HCIUART_BCSP 829 bcsp_deinit(); 830 #endif 831 #ifdef CONFIG_BT_HCIUART_LL 832 ll_deinit(); 833 #endif 834 #ifdef CONFIG_BT_HCIUART_ATH3K 835 ath_deinit(); 836 #endif 837 #ifdef CONFIG_BT_HCIUART_3WIRE 838 h5_deinit(); 839 #endif 840 #ifdef CONFIG_BT_HCIUART_INTEL 841 intel_deinit(); 842 #endif 843 #ifdef CONFIG_BT_HCIUART_BCM 844 bcm_deinit(); 845 #endif 846 #ifdef CONFIG_BT_HCIUART_QCA 847 qca_deinit(); 848 #endif 849 #ifdef CONFIG_BT_HCIUART_AG6XX 850 ag6xx_deinit(); 851 #endif 852 #ifdef CONFIG_BT_HCIUART_MRVL 853 mrvl_deinit(); 854 #endif 855 856 /* Release tty registration of line discipline */ 857 err = tty_unregister_ldisc(N_HCI); 858 if (err) 859 BT_ERR("Can't unregister HCI line discipline (%d)", err); 860 } 861 862 module_init(hci_uart_init); 863 module_exit(hci_uart_exit); 864 865 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); 866 MODULE_DESCRIPTION("Bluetooth HCI UART driver ver " VERSION); 867 MODULE_VERSION(VERSION); 868 MODULE_LICENSE("GPL"); 869 MODULE_ALIAS_LDISC(N_HCI); 870