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/kernel.h> 25 #include <linux/module.h> 26 #include <linux/init.h> 27 #include <linux/slab.h> 28 #include <linux/types.h> 29 #include <linux/sched.h> 30 #include <linux/errno.h> 31 #include <linux/skbuff.h> 32 33 #include <linux/usb.h> 34 35 #include <net/bluetooth/bluetooth.h> 36 #include <net/bluetooth/hci_core.h> 37 38 #define VERSION "0.6" 39 40 static int ignore_dga; 41 static int ignore_csr; 42 static int ignore_sniffer; 43 static int disable_scofix; 44 static int force_scofix; 45 46 static int reset = 1; 47 48 static struct usb_driver btusb_driver; 49 50 #define BTUSB_IGNORE 0x01 51 #define BTUSB_DIGIANSWER 0x02 52 #define BTUSB_CSR 0x04 53 #define BTUSB_SNIFFER 0x08 54 #define BTUSB_BCM92035 0x10 55 #define BTUSB_BROKEN_ISOC 0x20 56 #define BTUSB_WRONG_SCO_MTU 0x40 57 58 static struct usb_device_id btusb_table[] = { 59 /* Generic Bluetooth USB device */ 60 { USB_DEVICE_INFO(0xe0, 0x01, 0x01) }, 61 62 /* AVM BlueFRITZ! USB v2.0 */ 63 { USB_DEVICE(0x057c, 0x3800) }, 64 65 /* Bluetooth Ultraport Module from IBM */ 66 { USB_DEVICE(0x04bf, 0x030a) }, 67 68 /* ALPS Modules with non-standard id */ 69 { USB_DEVICE(0x044e, 0x3001) }, 70 { USB_DEVICE(0x044e, 0x3002) }, 71 72 /* Ericsson with non-standard id */ 73 { USB_DEVICE(0x0bdb, 0x1002) }, 74 75 /* Canyon CN-BTU1 with HID interfaces */ 76 { USB_DEVICE(0x0c10, 0x0000) }, 77 78 { } /* Terminating entry */ 79 }; 80 81 MODULE_DEVICE_TABLE(usb, btusb_table); 82 83 static struct usb_device_id blacklist_table[] = { 84 /* CSR BlueCore devices */ 85 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR }, 86 87 /* Broadcom BCM2033 without firmware */ 88 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE }, 89 90 /* Broadcom BCM2035 */ 91 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU }, 92 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU }, 93 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 }, 94 95 /* Broadcom BCM2045 */ 96 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU }, 97 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU }, 98 99 /* IBM/Lenovo ThinkPad with Broadcom chip */ 100 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU }, 101 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU }, 102 103 /* HP laptop with Broadcom chip */ 104 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU }, 105 106 /* Dell laptop with Broadcom chip */ 107 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU }, 108 109 /* Dell Wireless 370 and 410 devices */ 110 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU }, 111 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU }, 112 113 /* Belkin F8T012 and F8T013 devices */ 114 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU }, 115 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU }, 116 117 /* Asus WL-BTD202 device */ 118 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU }, 119 120 /* Kensington Bluetooth USB adapter */ 121 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU }, 122 123 /* RTX Telecom based adapters with buggy SCO support */ 124 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC }, 125 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC }, 126 127 /* CONWISE Technology based adapters with buggy SCO support */ 128 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC }, 129 130 /* Digianswer devices */ 131 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER }, 132 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE }, 133 134 /* CSR BlueCore Bluetooth Sniffer */ 135 { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER }, 136 137 /* Frontline ComProbe Bluetooth Sniffer */ 138 { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER }, 139 140 { } /* Terminating entry */ 141 }; 142 143 #define BTUSB_MAX_ISOC_FRAMES 10 144 145 #define BTUSB_INTR_RUNNING 0 146 #define BTUSB_BULK_RUNNING 1 147 #define BTUSB_ISOC_RUNNING 2 148 #define BTUSB_SUSPENDING 3 149 150 struct btusb_data { 151 struct hci_dev *hdev; 152 struct usb_device *udev; 153 struct usb_interface *intf; 154 struct usb_interface *isoc; 155 156 spinlock_t lock; 157 158 unsigned long flags; 159 160 struct work_struct work; 161 struct work_struct waker; 162 163 struct usb_anchor tx_anchor; 164 struct usb_anchor intr_anchor; 165 struct usb_anchor bulk_anchor; 166 struct usb_anchor isoc_anchor; 167 struct usb_anchor deferred; 168 int tx_in_flight; 169 spinlock_t txlock; 170 171 struct usb_endpoint_descriptor *intr_ep; 172 struct usb_endpoint_descriptor *bulk_tx_ep; 173 struct usb_endpoint_descriptor *bulk_rx_ep; 174 struct usb_endpoint_descriptor *isoc_tx_ep; 175 struct usb_endpoint_descriptor *isoc_rx_ep; 176 177 __u8 cmdreq_type; 178 179 unsigned int sco_num; 180 int isoc_altsetting; 181 int suspend_count; 182 int did_iso_resume:1; 183 }; 184 185 static int inc_tx(struct btusb_data *data) 186 { 187 unsigned long flags; 188 int rv; 189 190 spin_lock_irqsave(&data->txlock, flags); 191 rv = test_bit(BTUSB_SUSPENDING, &data->flags); 192 if (!rv) 193 data->tx_in_flight++; 194 spin_unlock_irqrestore(&data->txlock, flags); 195 196 return rv; 197 } 198 199 static void btusb_intr_complete(struct urb *urb) 200 { 201 struct hci_dev *hdev = urb->context; 202 struct btusb_data *data = hdev->driver_data; 203 int err; 204 205 BT_DBG("%s urb %p status %d count %d", hdev->name, 206 urb, urb->status, urb->actual_length); 207 208 if (!test_bit(HCI_RUNNING, &hdev->flags)) 209 return; 210 211 if (urb->status == 0) { 212 hdev->stat.byte_rx += urb->actual_length; 213 214 if (hci_recv_fragment(hdev, HCI_EVENT_PKT, 215 urb->transfer_buffer, 216 urb->actual_length) < 0) { 217 BT_ERR("%s corrupted event packet", hdev->name); 218 hdev->stat.err_rx++; 219 } 220 } 221 222 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags)) 223 return; 224 225 usb_mark_last_busy(data->udev); 226 usb_anchor_urb(urb, &data->intr_anchor); 227 228 err = usb_submit_urb(urb, GFP_ATOMIC); 229 if (err < 0) { 230 BT_ERR("%s urb %p failed to resubmit (%d)", 231 hdev->name, urb, -err); 232 usb_unanchor_urb(urb); 233 } 234 } 235 236 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags) 237 { 238 struct btusb_data *data = hdev->driver_data; 239 struct urb *urb; 240 unsigned char *buf; 241 unsigned int pipe; 242 int err, size; 243 244 BT_DBG("%s", hdev->name); 245 246 if (!data->intr_ep) 247 return -ENODEV; 248 249 urb = usb_alloc_urb(0, mem_flags); 250 if (!urb) 251 return -ENOMEM; 252 253 size = le16_to_cpu(data->intr_ep->wMaxPacketSize); 254 255 buf = kmalloc(size, mem_flags); 256 if (!buf) { 257 usb_free_urb(urb); 258 return -ENOMEM; 259 } 260 261 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress); 262 263 usb_fill_int_urb(urb, data->udev, pipe, buf, size, 264 btusb_intr_complete, hdev, 265 data->intr_ep->bInterval); 266 267 urb->transfer_flags |= URB_FREE_BUFFER; 268 269 usb_anchor_urb(urb, &data->intr_anchor); 270 271 err = usb_submit_urb(urb, mem_flags); 272 if (err < 0) { 273 BT_ERR("%s urb %p submission failed (%d)", 274 hdev->name, urb, -err); 275 usb_unanchor_urb(urb); 276 } 277 278 usb_free_urb(urb); 279 280 return err; 281 } 282 283 static void btusb_bulk_complete(struct urb *urb) 284 { 285 struct hci_dev *hdev = urb->context; 286 struct btusb_data *data = hdev->driver_data; 287 int err; 288 289 BT_DBG("%s urb %p status %d count %d", hdev->name, 290 urb, urb->status, urb->actual_length); 291 292 if (!test_bit(HCI_RUNNING, &hdev->flags)) 293 return; 294 295 if (urb->status == 0) { 296 hdev->stat.byte_rx += urb->actual_length; 297 298 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT, 299 urb->transfer_buffer, 300 urb->actual_length) < 0) { 301 BT_ERR("%s corrupted ACL packet", hdev->name); 302 hdev->stat.err_rx++; 303 } 304 } 305 306 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags)) 307 return; 308 309 usb_anchor_urb(urb, &data->bulk_anchor); 310 311 err = usb_submit_urb(urb, GFP_ATOMIC); 312 if (err < 0) { 313 BT_ERR("%s urb %p failed to resubmit (%d)", 314 hdev->name, urb, -err); 315 usb_unanchor_urb(urb); 316 } 317 } 318 319 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags) 320 { 321 struct btusb_data *data = hdev->driver_data; 322 struct urb *urb; 323 unsigned char *buf; 324 unsigned int pipe; 325 int err, size = HCI_MAX_FRAME_SIZE; 326 327 BT_DBG("%s", hdev->name); 328 329 if (!data->bulk_rx_ep) 330 return -ENODEV; 331 332 urb = usb_alloc_urb(0, mem_flags); 333 if (!urb) 334 return -ENOMEM; 335 336 buf = kmalloc(size, mem_flags); 337 if (!buf) { 338 usb_free_urb(urb); 339 return -ENOMEM; 340 } 341 342 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress); 343 344 usb_fill_bulk_urb(urb, data->udev, pipe, 345 buf, size, btusb_bulk_complete, hdev); 346 347 urb->transfer_flags |= URB_FREE_BUFFER; 348 349 usb_mark_last_busy(data->udev); 350 usb_anchor_urb(urb, &data->bulk_anchor); 351 352 err = usb_submit_urb(urb, mem_flags); 353 if (err < 0) { 354 BT_ERR("%s urb %p submission failed (%d)", 355 hdev->name, urb, -err); 356 usb_unanchor_urb(urb); 357 } 358 359 usb_free_urb(urb); 360 361 return err; 362 } 363 364 static void btusb_isoc_complete(struct urb *urb) 365 { 366 struct hci_dev *hdev = urb->context; 367 struct btusb_data *data = hdev->driver_data; 368 int i, err; 369 370 BT_DBG("%s urb %p status %d count %d", hdev->name, 371 urb, urb->status, urb->actual_length); 372 373 if (!test_bit(HCI_RUNNING, &hdev->flags)) 374 return; 375 376 if (urb->status == 0) { 377 for (i = 0; i < urb->number_of_packets; i++) { 378 unsigned int offset = urb->iso_frame_desc[i].offset; 379 unsigned int length = urb->iso_frame_desc[i].actual_length; 380 381 if (urb->iso_frame_desc[i].status) 382 continue; 383 384 hdev->stat.byte_rx += length; 385 386 if (hci_recv_fragment(hdev, HCI_SCODATA_PKT, 387 urb->transfer_buffer + offset, 388 length) < 0) { 389 BT_ERR("%s corrupted SCO packet", hdev->name); 390 hdev->stat.err_rx++; 391 } 392 } 393 } 394 395 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags)) 396 return; 397 398 usb_anchor_urb(urb, &data->isoc_anchor); 399 400 err = usb_submit_urb(urb, GFP_ATOMIC); 401 if (err < 0) { 402 BT_ERR("%s urb %p failed to resubmit (%d)", 403 hdev->name, urb, -err); 404 usb_unanchor_urb(urb); 405 } 406 } 407 408 static void inline __fill_isoc_descriptor(struct urb *urb, int len, int mtu) 409 { 410 int i, offset = 0; 411 412 BT_DBG("len %d mtu %d", len, mtu); 413 414 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu; 415 i++, offset += mtu, len -= mtu) { 416 urb->iso_frame_desc[i].offset = offset; 417 urb->iso_frame_desc[i].length = mtu; 418 } 419 420 if (len && i < BTUSB_MAX_ISOC_FRAMES) { 421 urb->iso_frame_desc[i].offset = offset; 422 urb->iso_frame_desc[i].length = len; 423 i++; 424 } 425 426 urb->number_of_packets = i; 427 } 428 429 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags) 430 { 431 struct btusb_data *data = hdev->driver_data; 432 struct urb *urb; 433 unsigned char *buf; 434 unsigned int pipe; 435 int err, size; 436 437 BT_DBG("%s", hdev->name); 438 439 if (!data->isoc_rx_ep) 440 return -ENODEV; 441 442 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags); 443 if (!urb) 444 return -ENOMEM; 445 446 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) * 447 BTUSB_MAX_ISOC_FRAMES; 448 449 buf = kmalloc(size, mem_flags); 450 if (!buf) { 451 usb_free_urb(urb); 452 return -ENOMEM; 453 } 454 455 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress); 456 457 urb->dev = data->udev; 458 urb->pipe = pipe; 459 urb->context = hdev; 460 urb->complete = btusb_isoc_complete; 461 urb->interval = data->isoc_rx_ep->bInterval; 462 463 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP; 464 urb->transfer_buffer = buf; 465 urb->transfer_buffer_length = size; 466 467 __fill_isoc_descriptor(urb, size, 468 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize)); 469 470 usb_anchor_urb(urb, &data->isoc_anchor); 471 472 err = usb_submit_urb(urb, mem_flags); 473 if (err < 0) { 474 BT_ERR("%s urb %p submission failed (%d)", 475 hdev->name, urb, -err); 476 usb_unanchor_urb(urb); 477 } 478 479 usb_free_urb(urb); 480 481 return err; 482 } 483 484 static void btusb_tx_complete(struct urb *urb) 485 { 486 struct sk_buff *skb = urb->context; 487 struct hci_dev *hdev = (struct hci_dev *) skb->dev; 488 struct btusb_data *data = hdev->driver_data; 489 490 BT_DBG("%s urb %p status %d count %d", hdev->name, 491 urb, urb->status, urb->actual_length); 492 493 if (!test_bit(HCI_RUNNING, &hdev->flags)) 494 goto done; 495 496 if (!urb->status) 497 hdev->stat.byte_tx += urb->transfer_buffer_length; 498 else 499 hdev->stat.err_tx++; 500 501 done: 502 spin_lock(&data->txlock); 503 data->tx_in_flight--; 504 spin_unlock(&data->txlock); 505 506 kfree(urb->setup_packet); 507 508 kfree_skb(skb); 509 } 510 511 static void btusb_isoc_tx_complete(struct urb *urb) 512 { 513 struct sk_buff *skb = urb->context; 514 struct hci_dev *hdev = (struct hci_dev *) skb->dev; 515 516 BT_DBG("%s urb %p status %d count %d", hdev->name, 517 urb, urb->status, urb->actual_length); 518 519 if (!test_bit(HCI_RUNNING, &hdev->flags)) 520 goto done; 521 522 if (!urb->status) 523 hdev->stat.byte_tx += urb->transfer_buffer_length; 524 else 525 hdev->stat.err_tx++; 526 527 done: 528 kfree(urb->setup_packet); 529 530 kfree_skb(skb); 531 } 532 533 static int btusb_open(struct hci_dev *hdev) 534 { 535 struct btusb_data *data = hdev->driver_data; 536 int err; 537 538 BT_DBG("%s", hdev->name); 539 540 err = usb_autopm_get_interface(data->intf); 541 if (err < 0) 542 return err; 543 544 data->intf->needs_remote_wakeup = 1; 545 546 if (test_and_set_bit(HCI_RUNNING, &hdev->flags)) 547 goto done; 548 549 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags)) 550 goto done; 551 552 err = btusb_submit_intr_urb(hdev, GFP_KERNEL); 553 if (err < 0) 554 goto failed; 555 556 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL); 557 if (err < 0) { 558 usb_kill_anchored_urbs(&data->intr_anchor); 559 goto failed; 560 } 561 562 set_bit(BTUSB_BULK_RUNNING, &data->flags); 563 btusb_submit_bulk_urb(hdev, GFP_KERNEL); 564 565 done: 566 usb_autopm_put_interface(data->intf); 567 return 0; 568 569 failed: 570 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 571 clear_bit(HCI_RUNNING, &hdev->flags); 572 usb_autopm_put_interface(data->intf); 573 return err; 574 } 575 576 static void btusb_stop_traffic(struct btusb_data *data) 577 { 578 usb_kill_anchored_urbs(&data->intr_anchor); 579 usb_kill_anchored_urbs(&data->bulk_anchor); 580 usb_kill_anchored_urbs(&data->isoc_anchor); 581 } 582 583 static int btusb_close(struct hci_dev *hdev) 584 { 585 struct btusb_data *data = hdev->driver_data; 586 int err; 587 588 BT_DBG("%s", hdev->name); 589 590 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags)) 591 return 0; 592 593 cancel_work_sync(&data->work); 594 cancel_work_sync(&data->waker); 595 596 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 597 clear_bit(BTUSB_BULK_RUNNING, &data->flags); 598 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 599 600 btusb_stop_traffic(data); 601 err = usb_autopm_get_interface(data->intf); 602 if (err < 0) 603 return 0; 604 605 data->intf->needs_remote_wakeup = 0; 606 usb_autopm_put_interface(data->intf); 607 608 return 0; 609 } 610 611 static int btusb_flush(struct hci_dev *hdev) 612 { 613 struct btusb_data *data = hdev->driver_data; 614 615 BT_DBG("%s", hdev->name); 616 617 usb_kill_anchored_urbs(&data->tx_anchor); 618 619 return 0; 620 } 621 622 static int btusb_send_frame(struct sk_buff *skb) 623 { 624 struct hci_dev *hdev = (struct hci_dev *) skb->dev; 625 struct btusb_data *data = hdev->driver_data; 626 struct usb_ctrlrequest *dr; 627 struct urb *urb; 628 unsigned int pipe; 629 int err; 630 631 BT_DBG("%s", hdev->name); 632 633 if (!test_bit(HCI_RUNNING, &hdev->flags)) 634 return -EBUSY; 635 636 switch (bt_cb(skb)->pkt_type) { 637 case HCI_COMMAND_PKT: 638 urb = usb_alloc_urb(0, GFP_ATOMIC); 639 if (!urb) 640 return -ENOMEM; 641 642 dr = kmalloc(sizeof(*dr), GFP_ATOMIC); 643 if (!dr) { 644 usb_free_urb(urb); 645 return -ENOMEM; 646 } 647 648 dr->bRequestType = data->cmdreq_type; 649 dr->bRequest = 0; 650 dr->wIndex = 0; 651 dr->wValue = 0; 652 dr->wLength = __cpu_to_le16(skb->len); 653 654 pipe = usb_sndctrlpipe(data->udev, 0x00); 655 656 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr, 657 skb->data, skb->len, btusb_tx_complete, skb); 658 659 hdev->stat.cmd_tx++; 660 break; 661 662 case HCI_ACLDATA_PKT: 663 if (!data->bulk_tx_ep || hdev->conn_hash.acl_num < 1) 664 return -ENODEV; 665 666 urb = usb_alloc_urb(0, GFP_ATOMIC); 667 if (!urb) 668 return -ENOMEM; 669 670 pipe = usb_sndbulkpipe(data->udev, 671 data->bulk_tx_ep->bEndpointAddress); 672 673 usb_fill_bulk_urb(urb, data->udev, pipe, 674 skb->data, skb->len, btusb_tx_complete, skb); 675 676 hdev->stat.acl_tx++; 677 break; 678 679 case HCI_SCODATA_PKT: 680 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1) 681 return -ENODEV; 682 683 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC); 684 if (!urb) 685 return -ENOMEM; 686 687 pipe = usb_sndisocpipe(data->udev, 688 data->isoc_tx_ep->bEndpointAddress); 689 690 urb->dev = data->udev; 691 urb->pipe = pipe; 692 urb->context = skb; 693 urb->complete = btusb_isoc_tx_complete; 694 urb->interval = data->isoc_tx_ep->bInterval; 695 696 urb->transfer_flags = URB_ISO_ASAP; 697 urb->transfer_buffer = skb->data; 698 urb->transfer_buffer_length = skb->len; 699 700 __fill_isoc_descriptor(urb, skb->len, 701 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize)); 702 703 hdev->stat.sco_tx++; 704 goto skip_waking; 705 706 default: 707 return -EILSEQ; 708 } 709 710 err = inc_tx(data); 711 if (err) { 712 usb_anchor_urb(urb, &data->deferred); 713 schedule_work(&data->waker); 714 err = 0; 715 goto done; 716 } 717 718 skip_waking: 719 usb_anchor_urb(urb, &data->tx_anchor); 720 721 err = usb_submit_urb(urb, GFP_ATOMIC); 722 if (err < 0) { 723 BT_ERR("%s urb %p submission failed", hdev->name, urb); 724 kfree(urb->setup_packet); 725 usb_unanchor_urb(urb); 726 } else { 727 usb_mark_last_busy(data->udev); 728 } 729 730 usb_free_urb(urb); 731 732 done: 733 return err; 734 } 735 736 static void btusb_destruct(struct hci_dev *hdev) 737 { 738 struct btusb_data *data = hdev->driver_data; 739 740 BT_DBG("%s", hdev->name); 741 742 kfree(data); 743 } 744 745 static void btusb_notify(struct hci_dev *hdev, unsigned int evt) 746 { 747 struct btusb_data *data = hdev->driver_data; 748 749 BT_DBG("%s evt %d", hdev->name, evt); 750 751 if (hdev->conn_hash.sco_num != data->sco_num) { 752 data->sco_num = hdev->conn_hash.sco_num; 753 schedule_work(&data->work); 754 } 755 } 756 757 static int inline __set_isoc_interface(struct hci_dev *hdev, int altsetting) 758 { 759 struct btusb_data *data = hdev->driver_data; 760 struct usb_interface *intf = data->isoc; 761 struct usb_endpoint_descriptor *ep_desc; 762 int i, err; 763 764 if (!data->isoc) 765 return -ENODEV; 766 767 err = usb_set_interface(data->udev, 1, altsetting); 768 if (err < 0) { 769 BT_ERR("%s setting interface failed (%d)", hdev->name, -err); 770 return err; 771 } 772 773 data->isoc_altsetting = altsetting; 774 775 data->isoc_tx_ep = NULL; 776 data->isoc_rx_ep = NULL; 777 778 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { 779 ep_desc = &intf->cur_altsetting->endpoint[i].desc; 780 781 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) { 782 data->isoc_tx_ep = ep_desc; 783 continue; 784 } 785 786 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) { 787 data->isoc_rx_ep = ep_desc; 788 continue; 789 } 790 } 791 792 if (!data->isoc_tx_ep || !data->isoc_rx_ep) { 793 BT_ERR("%s invalid SCO descriptors", hdev->name); 794 return -ENODEV; 795 } 796 797 return 0; 798 } 799 800 static void btusb_work(struct work_struct *work) 801 { 802 struct btusb_data *data = container_of(work, struct btusb_data, work); 803 struct hci_dev *hdev = data->hdev; 804 int err; 805 806 if (hdev->conn_hash.sco_num > 0) { 807 if (!data->did_iso_resume) { 808 err = usb_autopm_get_interface(data->isoc); 809 if (err < 0) { 810 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 811 usb_kill_anchored_urbs(&data->isoc_anchor); 812 return; 813 } 814 815 data->did_iso_resume = 1; 816 } 817 if (data->isoc_altsetting != 2) { 818 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 819 usb_kill_anchored_urbs(&data->isoc_anchor); 820 821 if (__set_isoc_interface(hdev, 2) < 0) 822 return; 823 } 824 825 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) { 826 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0) 827 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 828 else 829 btusb_submit_isoc_urb(hdev, GFP_KERNEL); 830 } 831 } else { 832 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 833 usb_kill_anchored_urbs(&data->isoc_anchor); 834 835 __set_isoc_interface(hdev, 0); 836 if (data->did_iso_resume) { 837 data->did_iso_resume = 0; 838 usb_autopm_put_interface(data->isoc); 839 } 840 } 841 } 842 843 static void btusb_waker(struct work_struct *work) 844 { 845 struct btusb_data *data = container_of(work, struct btusb_data, waker); 846 int err; 847 848 err = usb_autopm_get_interface(data->intf); 849 if (err < 0) 850 return; 851 852 usb_autopm_put_interface(data->intf); 853 } 854 855 static int btusb_probe(struct usb_interface *intf, 856 const struct usb_device_id *id) 857 { 858 struct usb_endpoint_descriptor *ep_desc; 859 struct btusb_data *data; 860 struct hci_dev *hdev; 861 int i, err; 862 863 BT_DBG("intf %p id %p", intf, id); 864 865 /* interface numbers are hardcoded in the spec */ 866 if (intf->cur_altsetting->desc.bInterfaceNumber != 0) 867 return -ENODEV; 868 869 if (!id->driver_info) { 870 const struct usb_device_id *match; 871 match = usb_match_id(intf, blacklist_table); 872 if (match) 873 id = match; 874 } 875 876 if (id->driver_info == BTUSB_IGNORE) 877 return -ENODEV; 878 879 if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER) 880 return -ENODEV; 881 882 if (ignore_csr && id->driver_info & BTUSB_CSR) 883 return -ENODEV; 884 885 if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER) 886 return -ENODEV; 887 888 data = kzalloc(sizeof(*data), GFP_KERNEL); 889 if (!data) 890 return -ENOMEM; 891 892 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { 893 ep_desc = &intf->cur_altsetting->endpoint[i].desc; 894 895 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) { 896 data->intr_ep = ep_desc; 897 continue; 898 } 899 900 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) { 901 data->bulk_tx_ep = ep_desc; 902 continue; 903 } 904 905 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) { 906 data->bulk_rx_ep = ep_desc; 907 continue; 908 } 909 } 910 911 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) { 912 kfree(data); 913 return -ENODEV; 914 } 915 916 data->cmdreq_type = USB_TYPE_CLASS; 917 918 data->udev = interface_to_usbdev(intf); 919 data->intf = intf; 920 921 spin_lock_init(&data->lock); 922 923 INIT_WORK(&data->work, btusb_work); 924 INIT_WORK(&data->waker, btusb_waker); 925 spin_lock_init(&data->txlock); 926 927 init_usb_anchor(&data->tx_anchor); 928 init_usb_anchor(&data->intr_anchor); 929 init_usb_anchor(&data->bulk_anchor); 930 init_usb_anchor(&data->isoc_anchor); 931 init_usb_anchor(&data->deferred); 932 933 hdev = hci_alloc_dev(); 934 if (!hdev) { 935 kfree(data); 936 return -ENOMEM; 937 } 938 939 hdev->type = HCI_USB; 940 hdev->driver_data = data; 941 942 data->hdev = hdev; 943 944 SET_HCIDEV_DEV(hdev, &intf->dev); 945 946 hdev->open = btusb_open; 947 hdev->close = btusb_close; 948 hdev->flush = btusb_flush; 949 hdev->send = btusb_send_frame; 950 hdev->destruct = btusb_destruct; 951 hdev->notify = btusb_notify; 952 953 hdev->owner = THIS_MODULE; 954 955 /* Interface numbers are hardcoded in the specification */ 956 data->isoc = usb_ifnum_to_if(data->udev, 1); 957 958 if (!reset) 959 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks); 960 961 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) { 962 if (!disable_scofix) 963 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks); 964 } 965 966 if (id->driver_info & BTUSB_BROKEN_ISOC) 967 data->isoc = NULL; 968 969 if (id->driver_info & BTUSB_DIGIANSWER) { 970 data->cmdreq_type = USB_TYPE_VENDOR; 971 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks); 972 } 973 974 if (id->driver_info & BTUSB_CSR) { 975 struct usb_device *udev = data->udev; 976 977 /* Old firmware would otherwise execute USB reset */ 978 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117) 979 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks); 980 } 981 982 if (id->driver_info & BTUSB_SNIFFER) { 983 struct usb_device *udev = data->udev; 984 985 /* New sniffer firmware has crippled HCI interface */ 986 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997) 987 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks); 988 989 data->isoc = NULL; 990 } 991 992 if (id->driver_info & BTUSB_BCM92035) { 993 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 }; 994 struct sk_buff *skb; 995 996 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL); 997 if (skb) { 998 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd)); 999 skb_queue_tail(&hdev->driver_init, skb); 1000 } 1001 } 1002 1003 if (data->isoc) { 1004 err = usb_driver_claim_interface(&btusb_driver, 1005 data->isoc, data); 1006 if (err < 0) { 1007 hci_free_dev(hdev); 1008 kfree(data); 1009 return err; 1010 } 1011 } 1012 1013 err = hci_register_dev(hdev); 1014 if (err < 0) { 1015 hci_free_dev(hdev); 1016 kfree(data); 1017 return err; 1018 } 1019 1020 usb_set_intfdata(intf, data); 1021 1022 return 0; 1023 } 1024 1025 static void btusb_disconnect(struct usb_interface *intf) 1026 { 1027 struct btusb_data *data = usb_get_intfdata(intf); 1028 struct hci_dev *hdev; 1029 1030 BT_DBG("intf %p", intf); 1031 1032 if (!data) 1033 return; 1034 1035 hdev = data->hdev; 1036 1037 __hci_dev_hold(hdev); 1038 1039 usb_set_intfdata(data->intf, NULL); 1040 1041 if (data->isoc) 1042 usb_set_intfdata(data->isoc, NULL); 1043 1044 hci_unregister_dev(hdev); 1045 1046 if (intf == data->isoc) 1047 usb_driver_release_interface(&btusb_driver, data->intf); 1048 else if (data->isoc) 1049 usb_driver_release_interface(&btusb_driver, data->isoc); 1050 1051 __hci_dev_put(hdev); 1052 1053 hci_free_dev(hdev); 1054 } 1055 1056 #ifdef CONFIG_PM 1057 static int btusb_suspend(struct usb_interface *intf, pm_message_t message) 1058 { 1059 struct btusb_data *data = usb_get_intfdata(intf); 1060 1061 BT_DBG("intf %p", intf); 1062 1063 if (data->suspend_count++) 1064 return 0; 1065 1066 spin_lock_irq(&data->txlock); 1067 if (!(interface_to_usbdev(intf)->auto_pm && data->tx_in_flight)) { 1068 set_bit(BTUSB_SUSPENDING, &data->flags); 1069 spin_unlock_irq(&data->txlock); 1070 } else { 1071 spin_unlock_irq(&data->txlock); 1072 data->suspend_count--; 1073 return -EBUSY; 1074 } 1075 1076 cancel_work_sync(&data->work); 1077 1078 btusb_stop_traffic(data); 1079 usb_kill_anchored_urbs(&data->tx_anchor); 1080 1081 return 0; 1082 } 1083 1084 static void play_deferred(struct btusb_data *data) 1085 { 1086 struct urb *urb; 1087 int err; 1088 1089 while ((urb = usb_get_from_anchor(&data->deferred))) { 1090 err = usb_submit_urb(urb, GFP_ATOMIC); 1091 if (err < 0) 1092 break; 1093 1094 data->tx_in_flight++; 1095 } 1096 usb_scuttle_anchored_urbs(&data->deferred); 1097 } 1098 1099 static int btusb_resume(struct usb_interface *intf) 1100 { 1101 struct btusb_data *data = usb_get_intfdata(intf); 1102 struct hci_dev *hdev = data->hdev; 1103 int err = 0; 1104 1105 BT_DBG("intf %p", intf); 1106 1107 if (--data->suspend_count) 1108 return 0; 1109 1110 if (!test_bit(HCI_RUNNING, &hdev->flags)) 1111 goto done; 1112 1113 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) { 1114 err = btusb_submit_intr_urb(hdev, GFP_NOIO); 1115 if (err < 0) { 1116 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 1117 goto failed; 1118 } 1119 } 1120 1121 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) { 1122 err = btusb_submit_bulk_urb(hdev, GFP_NOIO); 1123 if (err < 0) { 1124 clear_bit(BTUSB_BULK_RUNNING, &data->flags); 1125 goto failed; 1126 } 1127 1128 btusb_submit_bulk_urb(hdev, GFP_NOIO); 1129 } 1130 1131 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) { 1132 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0) 1133 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1134 else 1135 btusb_submit_isoc_urb(hdev, GFP_NOIO); 1136 } 1137 1138 spin_lock_irq(&data->txlock); 1139 play_deferred(data); 1140 clear_bit(BTUSB_SUSPENDING, &data->flags); 1141 spin_unlock_irq(&data->txlock); 1142 schedule_work(&data->work); 1143 1144 return 0; 1145 1146 failed: 1147 usb_scuttle_anchored_urbs(&data->deferred); 1148 done: 1149 spin_lock_irq(&data->txlock); 1150 clear_bit(BTUSB_SUSPENDING, &data->flags); 1151 spin_unlock_irq(&data->txlock); 1152 1153 return err; 1154 } 1155 #endif 1156 1157 static struct usb_driver btusb_driver = { 1158 .name = "btusb", 1159 .probe = btusb_probe, 1160 .disconnect = btusb_disconnect, 1161 #ifdef CONFIG_PM 1162 .suspend = btusb_suspend, 1163 .resume = btusb_resume, 1164 #endif 1165 .id_table = btusb_table, 1166 .supports_autosuspend = 1, 1167 }; 1168 1169 static int __init btusb_init(void) 1170 { 1171 BT_INFO("Generic Bluetooth USB driver ver %s", VERSION); 1172 1173 return usb_register(&btusb_driver); 1174 } 1175 1176 static void __exit btusb_exit(void) 1177 { 1178 usb_deregister(&btusb_driver); 1179 } 1180 1181 module_init(btusb_init); 1182 module_exit(btusb_exit); 1183 1184 module_param(ignore_dga, bool, 0644); 1185 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001"); 1186 1187 module_param(ignore_csr, bool, 0644); 1188 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001"); 1189 1190 module_param(ignore_sniffer, bool, 0644); 1191 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002"); 1192 1193 module_param(disable_scofix, bool, 0644); 1194 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size"); 1195 1196 module_param(force_scofix, bool, 0644); 1197 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size"); 1198 1199 module_param(reset, bool, 0644); 1200 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization"); 1201 1202 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); 1203 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION); 1204 MODULE_VERSION(VERSION); 1205 MODULE_LICENSE("GPL"); 1206