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 /* Apple MacBookPro 7,1 */ 63 { USB_DEVICE(0x05ac, 0x8213) }, 64 65 /* Apple iMac11,1 */ 66 { USB_DEVICE(0x05ac, 0x8215) }, 67 68 /* Apple MacBookPro6,2 */ 69 { USB_DEVICE(0x05ac, 0x8218) }, 70 71 /* AVM BlueFRITZ! USB v2.0 */ 72 { USB_DEVICE(0x057c, 0x3800) }, 73 74 /* Bluetooth Ultraport Module from IBM */ 75 { USB_DEVICE(0x04bf, 0x030a) }, 76 77 /* ALPS Modules with non-standard id */ 78 { USB_DEVICE(0x044e, 0x3001) }, 79 { USB_DEVICE(0x044e, 0x3002) }, 80 81 /* Ericsson with non-standard id */ 82 { USB_DEVICE(0x0bdb, 0x1002) }, 83 84 /* Canyon CN-BTU1 with HID interfaces */ 85 { USB_DEVICE(0x0c10, 0x0000) }, 86 87 { } /* Terminating entry */ 88 }; 89 90 MODULE_DEVICE_TABLE(usb, btusb_table); 91 92 static struct usb_device_id blacklist_table[] = { 93 /* CSR BlueCore devices */ 94 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR }, 95 96 /* Broadcom BCM2033 without firmware */ 97 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE }, 98 99 /* Broadcom BCM2035 */ 100 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU }, 101 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU }, 102 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 }, 103 104 /* Broadcom BCM2045 */ 105 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU }, 106 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU }, 107 108 /* IBM/Lenovo ThinkPad with Broadcom chip */ 109 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU }, 110 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU }, 111 112 /* HP laptop with Broadcom chip */ 113 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU }, 114 115 /* Dell laptop with Broadcom chip */ 116 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU }, 117 118 /* Dell Wireless 370 and 410 devices */ 119 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU }, 120 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU }, 121 122 /* Belkin F8T012 and F8T013 devices */ 123 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU }, 124 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU }, 125 126 /* Asus WL-BTD202 device */ 127 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU }, 128 129 /* Kensington Bluetooth USB adapter */ 130 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU }, 131 132 /* RTX Telecom based adapters with buggy SCO support */ 133 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC }, 134 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC }, 135 136 /* CONWISE Technology based adapters with buggy SCO support */ 137 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC }, 138 139 /* Digianswer devices */ 140 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER }, 141 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE }, 142 143 /* CSR BlueCore Bluetooth Sniffer */ 144 { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER }, 145 146 /* Frontline ComProbe Bluetooth Sniffer */ 147 { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER }, 148 149 { } /* Terminating entry */ 150 }; 151 152 #define BTUSB_MAX_ISOC_FRAMES 10 153 154 #define BTUSB_INTR_RUNNING 0 155 #define BTUSB_BULK_RUNNING 1 156 #define BTUSB_ISOC_RUNNING 2 157 #define BTUSB_SUSPENDING 3 158 #define BTUSB_DID_ISO_RESUME 4 159 160 struct btusb_data { 161 struct hci_dev *hdev; 162 struct usb_device *udev; 163 struct usb_interface *intf; 164 struct usb_interface *isoc; 165 166 spinlock_t lock; 167 168 unsigned long flags; 169 170 struct work_struct work; 171 struct work_struct waker; 172 173 struct usb_anchor tx_anchor; 174 struct usb_anchor intr_anchor; 175 struct usb_anchor bulk_anchor; 176 struct usb_anchor isoc_anchor; 177 struct usb_anchor deferred; 178 int tx_in_flight; 179 spinlock_t txlock; 180 181 struct usb_endpoint_descriptor *intr_ep; 182 struct usb_endpoint_descriptor *bulk_tx_ep; 183 struct usb_endpoint_descriptor *bulk_rx_ep; 184 struct usb_endpoint_descriptor *isoc_tx_ep; 185 struct usb_endpoint_descriptor *isoc_rx_ep; 186 187 __u8 cmdreq_type; 188 189 unsigned int sco_num; 190 int isoc_altsetting; 191 int suspend_count; 192 }; 193 194 static int inc_tx(struct btusb_data *data) 195 { 196 unsigned long flags; 197 int rv; 198 199 spin_lock_irqsave(&data->txlock, flags); 200 rv = test_bit(BTUSB_SUSPENDING, &data->flags); 201 if (!rv) 202 data->tx_in_flight++; 203 spin_unlock_irqrestore(&data->txlock, flags); 204 205 return rv; 206 } 207 208 static void btusb_intr_complete(struct urb *urb) 209 { 210 struct hci_dev *hdev = urb->context; 211 struct btusb_data *data = hdev->driver_data; 212 int err; 213 214 BT_DBG("%s urb %p status %d count %d", hdev->name, 215 urb, urb->status, urb->actual_length); 216 217 if (!test_bit(HCI_RUNNING, &hdev->flags)) 218 return; 219 220 if (urb->status == 0) { 221 hdev->stat.byte_rx += urb->actual_length; 222 223 if (hci_recv_fragment(hdev, HCI_EVENT_PKT, 224 urb->transfer_buffer, 225 urb->actual_length) < 0) { 226 BT_ERR("%s corrupted event packet", hdev->name); 227 hdev->stat.err_rx++; 228 } 229 } 230 231 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags)) 232 return; 233 234 usb_mark_last_busy(data->udev); 235 usb_anchor_urb(urb, &data->intr_anchor); 236 237 err = usb_submit_urb(urb, GFP_ATOMIC); 238 if (err < 0) { 239 BT_ERR("%s urb %p failed to resubmit (%d)", 240 hdev->name, urb, -err); 241 usb_unanchor_urb(urb); 242 } 243 } 244 245 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags) 246 { 247 struct btusb_data *data = hdev->driver_data; 248 struct urb *urb; 249 unsigned char *buf; 250 unsigned int pipe; 251 int err, size; 252 253 BT_DBG("%s", hdev->name); 254 255 if (!data->intr_ep) 256 return -ENODEV; 257 258 urb = usb_alloc_urb(0, mem_flags); 259 if (!urb) 260 return -ENOMEM; 261 262 size = le16_to_cpu(data->intr_ep->wMaxPacketSize); 263 264 buf = kmalloc(size, mem_flags); 265 if (!buf) { 266 usb_free_urb(urb); 267 return -ENOMEM; 268 } 269 270 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress); 271 272 usb_fill_int_urb(urb, data->udev, pipe, buf, size, 273 btusb_intr_complete, hdev, 274 data->intr_ep->bInterval); 275 276 urb->transfer_flags |= URB_FREE_BUFFER; 277 278 usb_anchor_urb(urb, &data->intr_anchor); 279 280 err = usb_submit_urb(urb, mem_flags); 281 if (err < 0) { 282 BT_ERR("%s urb %p submission failed (%d)", 283 hdev->name, urb, -err); 284 usb_unanchor_urb(urb); 285 } 286 287 usb_free_urb(urb); 288 289 return err; 290 } 291 292 static void btusb_bulk_complete(struct urb *urb) 293 { 294 struct hci_dev *hdev = urb->context; 295 struct btusb_data *data = hdev->driver_data; 296 int err; 297 298 BT_DBG("%s urb %p status %d count %d", hdev->name, 299 urb, urb->status, urb->actual_length); 300 301 if (!test_bit(HCI_RUNNING, &hdev->flags)) 302 return; 303 304 if (urb->status == 0) { 305 hdev->stat.byte_rx += urb->actual_length; 306 307 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT, 308 urb->transfer_buffer, 309 urb->actual_length) < 0) { 310 BT_ERR("%s corrupted ACL packet", hdev->name); 311 hdev->stat.err_rx++; 312 } 313 } 314 315 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags)) 316 return; 317 318 usb_anchor_urb(urb, &data->bulk_anchor); 319 usb_mark_last_busy(data->udev); 320 321 err = usb_submit_urb(urb, GFP_ATOMIC); 322 if (err < 0) { 323 BT_ERR("%s urb %p failed to resubmit (%d)", 324 hdev->name, urb, -err); 325 usb_unanchor_urb(urb); 326 } 327 } 328 329 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags) 330 { 331 struct btusb_data *data = hdev->driver_data; 332 struct urb *urb; 333 unsigned char *buf; 334 unsigned int pipe; 335 int err, size = HCI_MAX_FRAME_SIZE; 336 337 BT_DBG("%s", hdev->name); 338 339 if (!data->bulk_rx_ep) 340 return -ENODEV; 341 342 urb = usb_alloc_urb(0, mem_flags); 343 if (!urb) 344 return -ENOMEM; 345 346 buf = kmalloc(size, mem_flags); 347 if (!buf) { 348 usb_free_urb(urb); 349 return -ENOMEM; 350 } 351 352 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress); 353 354 usb_fill_bulk_urb(urb, data->udev, pipe, 355 buf, size, btusb_bulk_complete, hdev); 356 357 urb->transfer_flags |= URB_FREE_BUFFER; 358 359 usb_mark_last_busy(data->udev); 360 usb_anchor_urb(urb, &data->bulk_anchor); 361 362 err = usb_submit_urb(urb, mem_flags); 363 if (err < 0) { 364 BT_ERR("%s urb %p submission failed (%d)", 365 hdev->name, urb, -err); 366 usb_unanchor_urb(urb); 367 } 368 369 usb_free_urb(urb); 370 371 return err; 372 } 373 374 static void btusb_isoc_complete(struct urb *urb) 375 { 376 struct hci_dev *hdev = urb->context; 377 struct btusb_data *data = hdev->driver_data; 378 int i, err; 379 380 BT_DBG("%s urb %p status %d count %d", hdev->name, 381 urb, urb->status, urb->actual_length); 382 383 if (!test_bit(HCI_RUNNING, &hdev->flags)) 384 return; 385 386 if (urb->status == 0) { 387 for (i = 0; i < urb->number_of_packets; i++) { 388 unsigned int offset = urb->iso_frame_desc[i].offset; 389 unsigned int length = urb->iso_frame_desc[i].actual_length; 390 391 if (urb->iso_frame_desc[i].status) 392 continue; 393 394 hdev->stat.byte_rx += length; 395 396 if (hci_recv_fragment(hdev, HCI_SCODATA_PKT, 397 urb->transfer_buffer + offset, 398 length) < 0) { 399 BT_ERR("%s corrupted SCO packet", hdev->name); 400 hdev->stat.err_rx++; 401 } 402 } 403 } 404 405 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags)) 406 return; 407 408 usb_anchor_urb(urb, &data->isoc_anchor); 409 410 err = usb_submit_urb(urb, GFP_ATOMIC); 411 if (err < 0) { 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 void inline __fill_isoc_descriptor(struct urb *urb, int len, int mtu) 419 { 420 int i, offset = 0; 421 422 BT_DBG("len %d mtu %d", len, mtu); 423 424 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu; 425 i++, offset += mtu, len -= mtu) { 426 urb->iso_frame_desc[i].offset = offset; 427 urb->iso_frame_desc[i].length = mtu; 428 } 429 430 if (len && i < BTUSB_MAX_ISOC_FRAMES) { 431 urb->iso_frame_desc[i].offset = offset; 432 urb->iso_frame_desc[i].length = len; 433 i++; 434 } 435 436 urb->number_of_packets = i; 437 } 438 439 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags) 440 { 441 struct btusb_data *data = hdev->driver_data; 442 struct urb *urb; 443 unsigned char *buf; 444 unsigned int pipe; 445 int err, size; 446 447 BT_DBG("%s", hdev->name); 448 449 if (!data->isoc_rx_ep) 450 return -ENODEV; 451 452 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags); 453 if (!urb) 454 return -ENOMEM; 455 456 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) * 457 BTUSB_MAX_ISOC_FRAMES; 458 459 buf = kmalloc(size, mem_flags); 460 if (!buf) { 461 usb_free_urb(urb); 462 return -ENOMEM; 463 } 464 465 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress); 466 467 urb->dev = data->udev; 468 urb->pipe = pipe; 469 urb->context = hdev; 470 urb->complete = btusb_isoc_complete; 471 urb->interval = data->isoc_rx_ep->bInterval; 472 473 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP; 474 urb->transfer_buffer = buf; 475 urb->transfer_buffer_length = size; 476 477 __fill_isoc_descriptor(urb, size, 478 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize)); 479 480 usb_anchor_urb(urb, &data->isoc_anchor); 481 482 err = usb_submit_urb(urb, mem_flags); 483 if (err < 0) { 484 BT_ERR("%s urb %p submission failed (%d)", 485 hdev->name, urb, -err); 486 usb_unanchor_urb(urb); 487 } 488 489 usb_free_urb(urb); 490 491 return err; 492 } 493 494 static void btusb_tx_complete(struct urb *urb) 495 { 496 struct sk_buff *skb = urb->context; 497 struct hci_dev *hdev = (struct hci_dev *) skb->dev; 498 struct btusb_data *data = hdev->driver_data; 499 500 BT_DBG("%s urb %p status %d count %d", hdev->name, 501 urb, urb->status, urb->actual_length); 502 503 if (!test_bit(HCI_RUNNING, &hdev->flags)) 504 goto done; 505 506 if (!urb->status) 507 hdev->stat.byte_tx += urb->transfer_buffer_length; 508 else 509 hdev->stat.err_tx++; 510 511 done: 512 spin_lock(&data->txlock); 513 data->tx_in_flight--; 514 spin_unlock(&data->txlock); 515 516 kfree(urb->setup_packet); 517 518 kfree_skb(skb); 519 } 520 521 static void btusb_isoc_tx_complete(struct urb *urb) 522 { 523 struct sk_buff *skb = urb->context; 524 struct hci_dev *hdev = (struct hci_dev *) skb->dev; 525 526 BT_DBG("%s urb %p status %d count %d", hdev->name, 527 urb, urb->status, urb->actual_length); 528 529 if (!test_bit(HCI_RUNNING, &hdev->flags)) 530 goto done; 531 532 if (!urb->status) 533 hdev->stat.byte_tx += urb->transfer_buffer_length; 534 else 535 hdev->stat.err_tx++; 536 537 done: 538 kfree(urb->setup_packet); 539 540 kfree_skb(skb); 541 } 542 543 static int btusb_open(struct hci_dev *hdev) 544 { 545 struct btusb_data *data = hdev->driver_data; 546 int err; 547 548 BT_DBG("%s", hdev->name); 549 550 err = usb_autopm_get_interface(data->intf); 551 if (err < 0) 552 return err; 553 554 data->intf->needs_remote_wakeup = 1; 555 556 if (test_and_set_bit(HCI_RUNNING, &hdev->flags)) 557 goto done; 558 559 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags)) 560 goto done; 561 562 err = btusb_submit_intr_urb(hdev, GFP_KERNEL); 563 if (err < 0) 564 goto failed; 565 566 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL); 567 if (err < 0) { 568 usb_kill_anchored_urbs(&data->intr_anchor); 569 goto failed; 570 } 571 572 set_bit(BTUSB_BULK_RUNNING, &data->flags); 573 btusb_submit_bulk_urb(hdev, GFP_KERNEL); 574 575 done: 576 usb_autopm_put_interface(data->intf); 577 return 0; 578 579 failed: 580 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 581 clear_bit(HCI_RUNNING, &hdev->flags); 582 usb_autopm_put_interface(data->intf); 583 return err; 584 } 585 586 static void btusb_stop_traffic(struct btusb_data *data) 587 { 588 usb_kill_anchored_urbs(&data->intr_anchor); 589 usb_kill_anchored_urbs(&data->bulk_anchor); 590 usb_kill_anchored_urbs(&data->isoc_anchor); 591 } 592 593 static int btusb_close(struct hci_dev *hdev) 594 { 595 struct btusb_data *data = hdev->driver_data; 596 int err; 597 598 BT_DBG("%s", hdev->name); 599 600 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags)) 601 return 0; 602 603 cancel_work_sync(&data->work); 604 cancel_work_sync(&data->waker); 605 606 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 607 clear_bit(BTUSB_BULK_RUNNING, &data->flags); 608 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 609 610 btusb_stop_traffic(data); 611 err = usb_autopm_get_interface(data->intf); 612 if (err < 0) 613 goto failed; 614 615 data->intf->needs_remote_wakeup = 0; 616 usb_autopm_put_interface(data->intf); 617 618 failed: 619 usb_scuttle_anchored_urbs(&data->deferred); 620 return 0; 621 } 622 623 static int btusb_flush(struct hci_dev *hdev) 624 { 625 struct btusb_data *data = hdev->driver_data; 626 627 BT_DBG("%s", hdev->name); 628 629 usb_kill_anchored_urbs(&data->tx_anchor); 630 631 return 0; 632 } 633 634 static int btusb_send_frame(struct sk_buff *skb) 635 { 636 struct hci_dev *hdev = (struct hci_dev *) skb->dev; 637 struct btusb_data *data = hdev->driver_data; 638 struct usb_ctrlrequest *dr; 639 struct urb *urb; 640 unsigned int pipe; 641 int err; 642 643 BT_DBG("%s", hdev->name); 644 645 if (!test_bit(HCI_RUNNING, &hdev->flags)) 646 return -EBUSY; 647 648 switch (bt_cb(skb)->pkt_type) { 649 case HCI_COMMAND_PKT: 650 urb = usb_alloc_urb(0, GFP_ATOMIC); 651 if (!urb) 652 return -ENOMEM; 653 654 dr = kmalloc(sizeof(*dr), GFP_ATOMIC); 655 if (!dr) { 656 usb_free_urb(urb); 657 return -ENOMEM; 658 } 659 660 dr->bRequestType = data->cmdreq_type; 661 dr->bRequest = 0; 662 dr->wIndex = 0; 663 dr->wValue = 0; 664 dr->wLength = __cpu_to_le16(skb->len); 665 666 pipe = usb_sndctrlpipe(data->udev, 0x00); 667 668 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr, 669 skb->data, skb->len, btusb_tx_complete, skb); 670 671 hdev->stat.cmd_tx++; 672 break; 673 674 case HCI_ACLDATA_PKT: 675 if (!data->bulk_tx_ep || hdev->conn_hash.acl_num < 1) 676 return -ENODEV; 677 678 urb = usb_alloc_urb(0, GFP_ATOMIC); 679 if (!urb) 680 return -ENOMEM; 681 682 pipe = usb_sndbulkpipe(data->udev, 683 data->bulk_tx_ep->bEndpointAddress); 684 685 usb_fill_bulk_urb(urb, data->udev, pipe, 686 skb->data, skb->len, btusb_tx_complete, skb); 687 688 hdev->stat.acl_tx++; 689 break; 690 691 case HCI_SCODATA_PKT: 692 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1) 693 return -ENODEV; 694 695 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC); 696 if (!urb) 697 return -ENOMEM; 698 699 pipe = usb_sndisocpipe(data->udev, 700 data->isoc_tx_ep->bEndpointAddress); 701 702 urb->dev = data->udev; 703 urb->pipe = pipe; 704 urb->context = skb; 705 urb->complete = btusb_isoc_tx_complete; 706 urb->interval = data->isoc_tx_ep->bInterval; 707 708 urb->transfer_flags = URB_ISO_ASAP; 709 urb->transfer_buffer = skb->data; 710 urb->transfer_buffer_length = skb->len; 711 712 __fill_isoc_descriptor(urb, skb->len, 713 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize)); 714 715 hdev->stat.sco_tx++; 716 goto skip_waking; 717 718 default: 719 return -EILSEQ; 720 } 721 722 err = inc_tx(data); 723 if (err) { 724 usb_anchor_urb(urb, &data->deferred); 725 schedule_work(&data->waker); 726 err = 0; 727 goto done; 728 } 729 730 skip_waking: 731 usb_anchor_urb(urb, &data->tx_anchor); 732 733 err = usb_submit_urb(urb, GFP_ATOMIC); 734 if (err < 0) { 735 BT_ERR("%s urb %p submission failed", hdev->name, urb); 736 kfree(urb->setup_packet); 737 usb_unanchor_urb(urb); 738 } else { 739 usb_mark_last_busy(data->udev); 740 } 741 742 usb_free_urb(urb); 743 744 done: 745 return err; 746 } 747 748 static void btusb_destruct(struct hci_dev *hdev) 749 { 750 struct btusb_data *data = hdev->driver_data; 751 752 BT_DBG("%s", hdev->name); 753 754 kfree(data); 755 } 756 757 static void btusb_notify(struct hci_dev *hdev, unsigned int evt) 758 { 759 struct btusb_data *data = hdev->driver_data; 760 761 BT_DBG("%s evt %d", hdev->name, evt); 762 763 if (hdev->conn_hash.sco_num != data->sco_num) { 764 data->sco_num = hdev->conn_hash.sco_num; 765 schedule_work(&data->work); 766 } 767 } 768 769 static int inline __set_isoc_interface(struct hci_dev *hdev, int altsetting) 770 { 771 struct btusb_data *data = hdev->driver_data; 772 struct usb_interface *intf = data->isoc; 773 struct usb_endpoint_descriptor *ep_desc; 774 int i, err; 775 776 if (!data->isoc) 777 return -ENODEV; 778 779 err = usb_set_interface(data->udev, 1, altsetting); 780 if (err < 0) { 781 BT_ERR("%s setting interface failed (%d)", hdev->name, -err); 782 return err; 783 } 784 785 data->isoc_altsetting = altsetting; 786 787 data->isoc_tx_ep = NULL; 788 data->isoc_rx_ep = NULL; 789 790 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { 791 ep_desc = &intf->cur_altsetting->endpoint[i].desc; 792 793 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) { 794 data->isoc_tx_ep = ep_desc; 795 continue; 796 } 797 798 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) { 799 data->isoc_rx_ep = ep_desc; 800 continue; 801 } 802 } 803 804 if (!data->isoc_tx_ep || !data->isoc_rx_ep) { 805 BT_ERR("%s invalid SCO descriptors", hdev->name); 806 return -ENODEV; 807 } 808 809 return 0; 810 } 811 812 static void btusb_work(struct work_struct *work) 813 { 814 struct btusb_data *data = container_of(work, struct btusb_data, work); 815 struct hci_dev *hdev = data->hdev; 816 int err; 817 818 if (hdev->conn_hash.sco_num > 0) { 819 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) { 820 err = usb_autopm_get_interface(data->isoc); 821 if (err < 0) { 822 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 823 usb_kill_anchored_urbs(&data->isoc_anchor); 824 return; 825 } 826 827 set_bit(BTUSB_DID_ISO_RESUME, &data->flags); 828 } 829 if (data->isoc_altsetting != 2) { 830 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 831 usb_kill_anchored_urbs(&data->isoc_anchor); 832 833 if (__set_isoc_interface(hdev, 2) < 0) 834 return; 835 } 836 837 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) { 838 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0) 839 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 840 else 841 btusb_submit_isoc_urb(hdev, GFP_KERNEL); 842 } 843 } else { 844 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 845 usb_kill_anchored_urbs(&data->isoc_anchor); 846 847 __set_isoc_interface(hdev, 0); 848 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags)) 849 usb_autopm_put_interface(data->isoc); 850 } 851 } 852 853 static void btusb_waker(struct work_struct *work) 854 { 855 struct btusb_data *data = container_of(work, struct btusb_data, waker); 856 int err; 857 858 err = usb_autopm_get_interface(data->intf); 859 if (err < 0) 860 return; 861 862 usb_autopm_put_interface(data->intf); 863 } 864 865 static int btusb_probe(struct usb_interface *intf, 866 const struct usb_device_id *id) 867 { 868 struct usb_endpoint_descriptor *ep_desc; 869 struct btusb_data *data; 870 struct hci_dev *hdev; 871 int i, err; 872 873 BT_DBG("intf %p id %p", intf, id); 874 875 /* interface numbers are hardcoded in the spec */ 876 if (intf->cur_altsetting->desc.bInterfaceNumber != 0) 877 return -ENODEV; 878 879 if (!id->driver_info) { 880 const struct usb_device_id *match; 881 match = usb_match_id(intf, blacklist_table); 882 if (match) 883 id = match; 884 } 885 886 if (id->driver_info == BTUSB_IGNORE) 887 return -ENODEV; 888 889 if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER) 890 return -ENODEV; 891 892 if (ignore_csr && id->driver_info & BTUSB_CSR) 893 return -ENODEV; 894 895 if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER) 896 return -ENODEV; 897 898 data = kzalloc(sizeof(*data), GFP_KERNEL); 899 if (!data) 900 return -ENOMEM; 901 902 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { 903 ep_desc = &intf->cur_altsetting->endpoint[i].desc; 904 905 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) { 906 data->intr_ep = ep_desc; 907 continue; 908 } 909 910 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) { 911 data->bulk_tx_ep = ep_desc; 912 continue; 913 } 914 915 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) { 916 data->bulk_rx_ep = ep_desc; 917 continue; 918 } 919 } 920 921 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) { 922 kfree(data); 923 return -ENODEV; 924 } 925 926 data->cmdreq_type = USB_TYPE_CLASS; 927 928 data->udev = interface_to_usbdev(intf); 929 data->intf = intf; 930 931 spin_lock_init(&data->lock); 932 933 INIT_WORK(&data->work, btusb_work); 934 INIT_WORK(&data->waker, btusb_waker); 935 spin_lock_init(&data->txlock); 936 937 init_usb_anchor(&data->tx_anchor); 938 init_usb_anchor(&data->intr_anchor); 939 init_usb_anchor(&data->bulk_anchor); 940 init_usb_anchor(&data->isoc_anchor); 941 init_usb_anchor(&data->deferred); 942 943 hdev = hci_alloc_dev(); 944 if (!hdev) { 945 kfree(data); 946 return -ENOMEM; 947 } 948 949 hdev->bus = HCI_USB; 950 hdev->driver_data = data; 951 952 data->hdev = hdev; 953 954 SET_HCIDEV_DEV(hdev, &intf->dev); 955 956 hdev->open = btusb_open; 957 hdev->close = btusb_close; 958 hdev->flush = btusb_flush; 959 hdev->send = btusb_send_frame; 960 hdev->destruct = btusb_destruct; 961 hdev->notify = btusb_notify; 962 963 hdev->owner = THIS_MODULE; 964 965 /* Interface numbers are hardcoded in the specification */ 966 data->isoc = usb_ifnum_to_if(data->udev, 1); 967 968 if (!reset) 969 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks); 970 971 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) { 972 if (!disable_scofix) 973 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks); 974 } 975 976 if (id->driver_info & BTUSB_BROKEN_ISOC) 977 data->isoc = NULL; 978 979 if (id->driver_info & BTUSB_DIGIANSWER) { 980 data->cmdreq_type = USB_TYPE_VENDOR; 981 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks); 982 } 983 984 if (id->driver_info & BTUSB_CSR) { 985 struct usb_device *udev = data->udev; 986 987 /* Old firmware would otherwise execute USB reset */ 988 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117) 989 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks); 990 } 991 992 if (id->driver_info & BTUSB_SNIFFER) { 993 struct usb_device *udev = data->udev; 994 995 /* New sniffer firmware has crippled HCI interface */ 996 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997) 997 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks); 998 999 data->isoc = NULL; 1000 } 1001 1002 if (id->driver_info & BTUSB_BCM92035) { 1003 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 }; 1004 struct sk_buff *skb; 1005 1006 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL); 1007 if (skb) { 1008 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd)); 1009 skb_queue_tail(&hdev->driver_init, skb); 1010 } 1011 } 1012 1013 if (data->isoc) { 1014 err = usb_driver_claim_interface(&btusb_driver, 1015 data->isoc, data); 1016 if (err < 0) { 1017 hci_free_dev(hdev); 1018 kfree(data); 1019 return err; 1020 } 1021 } 1022 1023 err = hci_register_dev(hdev); 1024 if (err < 0) { 1025 hci_free_dev(hdev); 1026 kfree(data); 1027 return err; 1028 } 1029 1030 usb_set_intfdata(intf, data); 1031 1032 return 0; 1033 } 1034 1035 static void btusb_disconnect(struct usb_interface *intf) 1036 { 1037 struct btusb_data *data = usb_get_intfdata(intf); 1038 struct hci_dev *hdev; 1039 1040 BT_DBG("intf %p", intf); 1041 1042 if (!data) 1043 return; 1044 1045 hdev = data->hdev; 1046 1047 __hci_dev_hold(hdev); 1048 1049 usb_set_intfdata(data->intf, NULL); 1050 1051 if (data->isoc) 1052 usb_set_intfdata(data->isoc, NULL); 1053 1054 hci_unregister_dev(hdev); 1055 1056 if (intf == data->isoc) 1057 usb_driver_release_interface(&btusb_driver, data->intf); 1058 else if (data->isoc) 1059 usb_driver_release_interface(&btusb_driver, data->isoc); 1060 1061 __hci_dev_put(hdev); 1062 1063 hci_free_dev(hdev); 1064 } 1065 1066 #ifdef CONFIG_PM 1067 static int btusb_suspend(struct usb_interface *intf, pm_message_t message) 1068 { 1069 struct btusb_data *data = usb_get_intfdata(intf); 1070 1071 BT_DBG("intf %p", intf); 1072 1073 if (data->suspend_count++) 1074 return 0; 1075 1076 spin_lock_irq(&data->txlock); 1077 if (!((message.event & PM_EVENT_AUTO) && data->tx_in_flight)) { 1078 set_bit(BTUSB_SUSPENDING, &data->flags); 1079 spin_unlock_irq(&data->txlock); 1080 } else { 1081 spin_unlock_irq(&data->txlock); 1082 data->suspend_count--; 1083 return -EBUSY; 1084 } 1085 1086 cancel_work_sync(&data->work); 1087 1088 btusb_stop_traffic(data); 1089 usb_kill_anchored_urbs(&data->tx_anchor); 1090 1091 return 0; 1092 } 1093 1094 static void play_deferred(struct btusb_data *data) 1095 { 1096 struct urb *urb; 1097 int err; 1098 1099 while ((urb = usb_get_from_anchor(&data->deferred))) { 1100 err = usb_submit_urb(urb, GFP_ATOMIC); 1101 if (err < 0) 1102 break; 1103 1104 data->tx_in_flight++; 1105 } 1106 usb_scuttle_anchored_urbs(&data->deferred); 1107 } 1108 1109 static int btusb_resume(struct usb_interface *intf) 1110 { 1111 struct btusb_data *data = usb_get_intfdata(intf); 1112 struct hci_dev *hdev = data->hdev; 1113 int err = 0; 1114 1115 BT_DBG("intf %p", intf); 1116 1117 if (--data->suspend_count) 1118 return 0; 1119 1120 if (!test_bit(HCI_RUNNING, &hdev->flags)) 1121 goto done; 1122 1123 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) { 1124 err = btusb_submit_intr_urb(hdev, GFP_NOIO); 1125 if (err < 0) { 1126 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 1127 goto failed; 1128 } 1129 } 1130 1131 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) { 1132 err = btusb_submit_bulk_urb(hdev, GFP_NOIO); 1133 if (err < 0) { 1134 clear_bit(BTUSB_BULK_RUNNING, &data->flags); 1135 goto failed; 1136 } 1137 1138 btusb_submit_bulk_urb(hdev, GFP_NOIO); 1139 } 1140 1141 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) { 1142 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0) 1143 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1144 else 1145 btusb_submit_isoc_urb(hdev, GFP_NOIO); 1146 } 1147 1148 spin_lock_irq(&data->txlock); 1149 play_deferred(data); 1150 clear_bit(BTUSB_SUSPENDING, &data->flags); 1151 spin_unlock_irq(&data->txlock); 1152 schedule_work(&data->work); 1153 1154 return 0; 1155 1156 failed: 1157 usb_scuttle_anchored_urbs(&data->deferred); 1158 done: 1159 spin_lock_irq(&data->txlock); 1160 clear_bit(BTUSB_SUSPENDING, &data->flags); 1161 spin_unlock_irq(&data->txlock); 1162 1163 return err; 1164 } 1165 #endif 1166 1167 static struct usb_driver btusb_driver = { 1168 .name = "btusb", 1169 .probe = btusb_probe, 1170 .disconnect = btusb_disconnect, 1171 #ifdef CONFIG_PM 1172 .suspend = btusb_suspend, 1173 .resume = btusb_resume, 1174 #endif 1175 .id_table = btusb_table, 1176 .supports_autosuspend = 1, 1177 }; 1178 1179 static int __init btusb_init(void) 1180 { 1181 BT_INFO("Generic Bluetooth USB driver ver %s", VERSION); 1182 1183 return usb_register(&btusb_driver); 1184 } 1185 1186 static void __exit btusb_exit(void) 1187 { 1188 usb_deregister(&btusb_driver); 1189 } 1190 1191 module_init(btusb_init); 1192 module_exit(btusb_exit); 1193 1194 module_param(ignore_dga, bool, 0644); 1195 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001"); 1196 1197 module_param(ignore_csr, bool, 0644); 1198 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001"); 1199 1200 module_param(ignore_sniffer, bool, 0644); 1201 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002"); 1202 1203 module_param(disable_scofix, bool, 0644); 1204 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size"); 1205 1206 module_param(force_scofix, bool, 0644); 1207 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size"); 1208 1209 module_param(reset, bool, 0644); 1210 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization"); 1211 1212 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); 1213 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION); 1214 MODULE_VERSION(VERSION); 1215 MODULE_LICENSE("GPL"); 1216