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 /* Apple MacBookAir3,1, MacBookAir3,2 */ 72 { USB_DEVICE(0x05ac, 0x821b) }, 73 74 /* AVM BlueFRITZ! USB v2.0 */ 75 { USB_DEVICE(0x057c, 0x3800) }, 76 77 /* Bluetooth Ultraport Module from IBM */ 78 { USB_DEVICE(0x04bf, 0x030a) }, 79 80 /* ALPS Modules with non-standard id */ 81 { USB_DEVICE(0x044e, 0x3001) }, 82 { USB_DEVICE(0x044e, 0x3002) }, 83 84 /* Ericsson with non-standard id */ 85 { USB_DEVICE(0x0bdb, 0x1002) }, 86 87 /* Canyon CN-BTU1 with HID interfaces */ 88 { USB_DEVICE(0x0c10, 0x0000) }, 89 90 { } /* Terminating entry */ 91 }; 92 93 MODULE_DEVICE_TABLE(usb, btusb_table); 94 95 static struct usb_device_id blacklist_table[] = { 96 /* CSR BlueCore devices */ 97 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR }, 98 99 /* Broadcom BCM2033 without firmware */ 100 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE }, 101 102 /* Atheros 3011 with sflash firmware */ 103 { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE }, 104 105 /* Broadcom BCM2035 */ 106 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU }, 107 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU }, 108 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 }, 109 110 /* Broadcom BCM2045 */ 111 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU }, 112 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU }, 113 114 /* IBM/Lenovo ThinkPad with Broadcom chip */ 115 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU }, 116 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU }, 117 118 /* HP laptop with Broadcom chip */ 119 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU }, 120 121 /* Dell laptop with Broadcom chip */ 122 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU }, 123 124 /* Dell Wireless 370 and 410 devices */ 125 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU }, 126 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU }, 127 128 /* Belkin F8T012 and F8T013 devices */ 129 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU }, 130 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU }, 131 132 /* Asus WL-BTD202 device */ 133 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU }, 134 135 /* Kensington Bluetooth USB adapter */ 136 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU }, 137 138 /* RTX Telecom based adapters with buggy SCO support */ 139 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC }, 140 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC }, 141 142 /* CONWISE Technology based adapters with buggy SCO support */ 143 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC }, 144 145 /* Digianswer devices */ 146 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER }, 147 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE }, 148 149 /* CSR BlueCore Bluetooth Sniffer */ 150 { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER }, 151 152 /* Frontline ComProbe Bluetooth Sniffer */ 153 { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER }, 154 155 { } /* Terminating entry */ 156 }; 157 158 #define BTUSB_MAX_ISOC_FRAMES 10 159 160 #define BTUSB_INTR_RUNNING 0 161 #define BTUSB_BULK_RUNNING 1 162 #define BTUSB_ISOC_RUNNING 2 163 #define BTUSB_SUSPENDING 3 164 #define BTUSB_DID_ISO_RESUME 4 165 166 struct btusb_data { 167 struct hci_dev *hdev; 168 struct usb_device *udev; 169 struct usb_interface *intf; 170 struct usb_interface *isoc; 171 172 spinlock_t lock; 173 174 unsigned long flags; 175 176 struct work_struct work; 177 struct work_struct waker; 178 179 struct usb_anchor tx_anchor; 180 struct usb_anchor intr_anchor; 181 struct usb_anchor bulk_anchor; 182 struct usb_anchor isoc_anchor; 183 struct usb_anchor deferred; 184 int tx_in_flight; 185 spinlock_t txlock; 186 187 struct usb_endpoint_descriptor *intr_ep; 188 struct usb_endpoint_descriptor *bulk_tx_ep; 189 struct usb_endpoint_descriptor *bulk_rx_ep; 190 struct usb_endpoint_descriptor *isoc_tx_ep; 191 struct usb_endpoint_descriptor *isoc_rx_ep; 192 193 __u8 cmdreq_type; 194 195 unsigned int sco_num; 196 int isoc_altsetting; 197 int suspend_count; 198 }; 199 200 static int inc_tx(struct btusb_data *data) 201 { 202 unsigned long flags; 203 int rv; 204 205 spin_lock_irqsave(&data->txlock, flags); 206 rv = test_bit(BTUSB_SUSPENDING, &data->flags); 207 if (!rv) 208 data->tx_in_flight++; 209 spin_unlock_irqrestore(&data->txlock, flags); 210 211 return rv; 212 } 213 214 static void btusb_intr_complete(struct urb *urb) 215 { 216 struct hci_dev *hdev = urb->context; 217 struct btusb_data *data = hdev->driver_data; 218 int err; 219 220 BT_DBG("%s urb %p status %d count %d", hdev->name, 221 urb, urb->status, urb->actual_length); 222 223 if (!test_bit(HCI_RUNNING, &hdev->flags)) 224 return; 225 226 if (urb->status == 0) { 227 hdev->stat.byte_rx += urb->actual_length; 228 229 if (hci_recv_fragment(hdev, HCI_EVENT_PKT, 230 urb->transfer_buffer, 231 urb->actual_length) < 0) { 232 BT_ERR("%s corrupted event packet", hdev->name); 233 hdev->stat.err_rx++; 234 } 235 } 236 237 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags)) 238 return; 239 240 usb_mark_last_busy(data->udev); 241 usb_anchor_urb(urb, &data->intr_anchor); 242 243 err = usb_submit_urb(urb, GFP_ATOMIC); 244 if (err < 0) { 245 if (err != -EPERM) 246 BT_ERR("%s urb %p failed to resubmit (%d)", 247 hdev->name, urb, -err); 248 usb_unanchor_urb(urb); 249 } 250 } 251 252 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags) 253 { 254 struct btusb_data *data = hdev->driver_data; 255 struct urb *urb; 256 unsigned char *buf; 257 unsigned int pipe; 258 int err, size; 259 260 BT_DBG("%s", hdev->name); 261 262 if (!data->intr_ep) 263 return -ENODEV; 264 265 urb = usb_alloc_urb(0, mem_flags); 266 if (!urb) 267 return -ENOMEM; 268 269 size = le16_to_cpu(data->intr_ep->wMaxPacketSize); 270 271 buf = kmalloc(size, mem_flags); 272 if (!buf) { 273 usb_free_urb(urb); 274 return -ENOMEM; 275 } 276 277 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress); 278 279 usb_fill_int_urb(urb, data->udev, pipe, buf, size, 280 btusb_intr_complete, hdev, 281 data->intr_ep->bInterval); 282 283 urb->transfer_flags |= URB_FREE_BUFFER; 284 285 usb_anchor_urb(urb, &data->intr_anchor); 286 287 err = usb_submit_urb(urb, mem_flags); 288 if (err < 0) { 289 BT_ERR("%s urb %p submission failed (%d)", 290 hdev->name, urb, -err); 291 usb_unanchor_urb(urb); 292 } 293 294 usb_free_urb(urb); 295 296 return err; 297 } 298 299 static void btusb_bulk_complete(struct urb *urb) 300 { 301 struct hci_dev *hdev = urb->context; 302 struct btusb_data *data = hdev->driver_data; 303 int err; 304 305 BT_DBG("%s urb %p status %d count %d", hdev->name, 306 urb, urb->status, urb->actual_length); 307 308 if (!test_bit(HCI_RUNNING, &hdev->flags)) 309 return; 310 311 if (urb->status == 0) { 312 hdev->stat.byte_rx += urb->actual_length; 313 314 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT, 315 urb->transfer_buffer, 316 urb->actual_length) < 0) { 317 BT_ERR("%s corrupted ACL packet", hdev->name); 318 hdev->stat.err_rx++; 319 } 320 } 321 322 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags)) 323 return; 324 325 usb_anchor_urb(urb, &data->bulk_anchor); 326 usb_mark_last_busy(data->udev); 327 328 err = usb_submit_urb(urb, GFP_ATOMIC); 329 if (err < 0) { 330 if (err != -EPERM) 331 BT_ERR("%s urb %p failed to resubmit (%d)", 332 hdev->name, urb, -err); 333 usb_unanchor_urb(urb); 334 } 335 } 336 337 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags) 338 { 339 struct btusb_data *data = hdev->driver_data; 340 struct urb *urb; 341 unsigned char *buf; 342 unsigned int pipe; 343 int err, size = HCI_MAX_FRAME_SIZE; 344 345 BT_DBG("%s", hdev->name); 346 347 if (!data->bulk_rx_ep) 348 return -ENODEV; 349 350 urb = usb_alloc_urb(0, mem_flags); 351 if (!urb) 352 return -ENOMEM; 353 354 buf = kmalloc(size, mem_flags); 355 if (!buf) { 356 usb_free_urb(urb); 357 return -ENOMEM; 358 } 359 360 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress); 361 362 usb_fill_bulk_urb(urb, data->udev, pipe, 363 buf, size, btusb_bulk_complete, hdev); 364 365 urb->transfer_flags |= URB_FREE_BUFFER; 366 367 usb_mark_last_busy(data->udev); 368 usb_anchor_urb(urb, &data->bulk_anchor); 369 370 err = usb_submit_urb(urb, mem_flags); 371 if (err < 0) { 372 BT_ERR("%s urb %p submission failed (%d)", 373 hdev->name, urb, -err); 374 usb_unanchor_urb(urb); 375 } 376 377 usb_free_urb(urb); 378 379 return err; 380 } 381 382 static void btusb_isoc_complete(struct urb *urb) 383 { 384 struct hci_dev *hdev = urb->context; 385 struct btusb_data *data = hdev->driver_data; 386 int i, err; 387 388 BT_DBG("%s urb %p status %d count %d", hdev->name, 389 urb, urb->status, urb->actual_length); 390 391 if (!test_bit(HCI_RUNNING, &hdev->flags)) 392 return; 393 394 if (urb->status == 0) { 395 for (i = 0; i < urb->number_of_packets; i++) { 396 unsigned int offset = urb->iso_frame_desc[i].offset; 397 unsigned int length = urb->iso_frame_desc[i].actual_length; 398 399 if (urb->iso_frame_desc[i].status) 400 continue; 401 402 hdev->stat.byte_rx += length; 403 404 if (hci_recv_fragment(hdev, HCI_SCODATA_PKT, 405 urb->transfer_buffer + offset, 406 length) < 0) { 407 BT_ERR("%s corrupted SCO packet", hdev->name); 408 hdev->stat.err_rx++; 409 } 410 } 411 } 412 413 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags)) 414 return; 415 416 usb_anchor_urb(urb, &data->isoc_anchor); 417 418 err = usb_submit_urb(urb, GFP_ATOMIC); 419 if (err < 0) { 420 if (err != -EPERM) 421 BT_ERR("%s urb %p failed to resubmit (%d)", 422 hdev->name, urb, -err); 423 usb_unanchor_urb(urb); 424 } 425 } 426 427 static void inline __fill_isoc_descriptor(struct urb *urb, int len, int mtu) 428 { 429 int i, offset = 0; 430 431 BT_DBG("len %d mtu %d", len, mtu); 432 433 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu; 434 i++, offset += mtu, len -= mtu) { 435 urb->iso_frame_desc[i].offset = offset; 436 urb->iso_frame_desc[i].length = mtu; 437 } 438 439 if (len && i < BTUSB_MAX_ISOC_FRAMES) { 440 urb->iso_frame_desc[i].offset = offset; 441 urb->iso_frame_desc[i].length = len; 442 i++; 443 } 444 445 urb->number_of_packets = i; 446 } 447 448 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags) 449 { 450 struct btusb_data *data = hdev->driver_data; 451 struct urb *urb; 452 unsigned char *buf; 453 unsigned int pipe; 454 int err, size; 455 456 BT_DBG("%s", hdev->name); 457 458 if (!data->isoc_rx_ep) 459 return -ENODEV; 460 461 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags); 462 if (!urb) 463 return -ENOMEM; 464 465 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) * 466 BTUSB_MAX_ISOC_FRAMES; 467 468 buf = kmalloc(size, mem_flags); 469 if (!buf) { 470 usb_free_urb(urb); 471 return -ENOMEM; 472 } 473 474 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress); 475 476 urb->dev = data->udev; 477 urb->pipe = pipe; 478 urb->context = hdev; 479 urb->complete = btusb_isoc_complete; 480 urb->interval = data->isoc_rx_ep->bInterval; 481 482 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP; 483 urb->transfer_buffer = buf; 484 urb->transfer_buffer_length = size; 485 486 __fill_isoc_descriptor(urb, size, 487 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize)); 488 489 usb_anchor_urb(urb, &data->isoc_anchor); 490 491 err = usb_submit_urb(urb, mem_flags); 492 if (err < 0) { 493 BT_ERR("%s urb %p submission failed (%d)", 494 hdev->name, urb, -err); 495 usb_unanchor_urb(urb); 496 } 497 498 usb_free_urb(urb); 499 500 return err; 501 } 502 503 static void btusb_tx_complete(struct urb *urb) 504 { 505 struct sk_buff *skb = urb->context; 506 struct hci_dev *hdev = (struct hci_dev *) skb->dev; 507 struct btusb_data *data = hdev->driver_data; 508 509 BT_DBG("%s urb %p status %d count %d", hdev->name, 510 urb, urb->status, urb->actual_length); 511 512 if (!test_bit(HCI_RUNNING, &hdev->flags)) 513 goto done; 514 515 if (!urb->status) 516 hdev->stat.byte_tx += urb->transfer_buffer_length; 517 else 518 hdev->stat.err_tx++; 519 520 done: 521 spin_lock(&data->txlock); 522 data->tx_in_flight--; 523 spin_unlock(&data->txlock); 524 525 kfree(urb->setup_packet); 526 527 kfree_skb(skb); 528 } 529 530 static void btusb_isoc_tx_complete(struct urb *urb) 531 { 532 struct sk_buff *skb = urb->context; 533 struct hci_dev *hdev = (struct hci_dev *) skb->dev; 534 535 BT_DBG("%s urb %p status %d count %d", hdev->name, 536 urb, urb->status, urb->actual_length); 537 538 if (!test_bit(HCI_RUNNING, &hdev->flags)) 539 goto done; 540 541 if (!urb->status) 542 hdev->stat.byte_tx += urb->transfer_buffer_length; 543 else 544 hdev->stat.err_tx++; 545 546 done: 547 kfree(urb->setup_packet); 548 549 kfree_skb(skb); 550 } 551 552 static int btusb_open(struct hci_dev *hdev) 553 { 554 struct btusb_data *data = hdev->driver_data; 555 int err; 556 557 BT_DBG("%s", hdev->name); 558 559 err = usb_autopm_get_interface(data->intf); 560 if (err < 0) 561 return err; 562 563 data->intf->needs_remote_wakeup = 1; 564 565 if (test_and_set_bit(HCI_RUNNING, &hdev->flags)) 566 goto done; 567 568 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags)) 569 goto done; 570 571 err = btusb_submit_intr_urb(hdev, GFP_KERNEL); 572 if (err < 0) 573 goto failed; 574 575 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL); 576 if (err < 0) { 577 usb_kill_anchored_urbs(&data->intr_anchor); 578 goto failed; 579 } 580 581 set_bit(BTUSB_BULK_RUNNING, &data->flags); 582 btusb_submit_bulk_urb(hdev, GFP_KERNEL); 583 584 done: 585 usb_autopm_put_interface(data->intf); 586 return 0; 587 588 failed: 589 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 590 clear_bit(HCI_RUNNING, &hdev->flags); 591 usb_autopm_put_interface(data->intf); 592 return err; 593 } 594 595 static void btusb_stop_traffic(struct btusb_data *data) 596 { 597 usb_kill_anchored_urbs(&data->intr_anchor); 598 usb_kill_anchored_urbs(&data->bulk_anchor); 599 usb_kill_anchored_urbs(&data->isoc_anchor); 600 } 601 602 static int btusb_close(struct hci_dev *hdev) 603 { 604 struct btusb_data *data = hdev->driver_data; 605 int err; 606 607 BT_DBG("%s", hdev->name); 608 609 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags)) 610 return 0; 611 612 cancel_work_sync(&data->work); 613 cancel_work_sync(&data->waker); 614 615 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 616 clear_bit(BTUSB_BULK_RUNNING, &data->flags); 617 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 618 619 btusb_stop_traffic(data); 620 err = usb_autopm_get_interface(data->intf); 621 if (err < 0) 622 goto failed; 623 624 data->intf->needs_remote_wakeup = 0; 625 usb_autopm_put_interface(data->intf); 626 627 failed: 628 usb_scuttle_anchored_urbs(&data->deferred); 629 return 0; 630 } 631 632 static int btusb_flush(struct hci_dev *hdev) 633 { 634 struct btusb_data *data = hdev->driver_data; 635 636 BT_DBG("%s", hdev->name); 637 638 usb_kill_anchored_urbs(&data->tx_anchor); 639 640 return 0; 641 } 642 643 static int btusb_send_frame(struct sk_buff *skb) 644 { 645 struct hci_dev *hdev = (struct hci_dev *) skb->dev; 646 struct btusb_data *data = hdev->driver_data; 647 struct usb_ctrlrequest *dr; 648 struct urb *urb; 649 unsigned int pipe; 650 int err; 651 652 BT_DBG("%s", hdev->name); 653 654 if (!test_bit(HCI_RUNNING, &hdev->flags)) 655 return -EBUSY; 656 657 switch (bt_cb(skb)->pkt_type) { 658 case HCI_COMMAND_PKT: 659 urb = usb_alloc_urb(0, GFP_ATOMIC); 660 if (!urb) 661 return -ENOMEM; 662 663 dr = kmalloc(sizeof(*dr), GFP_ATOMIC); 664 if (!dr) { 665 usb_free_urb(urb); 666 return -ENOMEM; 667 } 668 669 dr->bRequestType = data->cmdreq_type; 670 dr->bRequest = 0; 671 dr->wIndex = 0; 672 dr->wValue = 0; 673 dr->wLength = __cpu_to_le16(skb->len); 674 675 pipe = usb_sndctrlpipe(data->udev, 0x00); 676 677 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr, 678 skb->data, skb->len, btusb_tx_complete, skb); 679 680 hdev->stat.cmd_tx++; 681 break; 682 683 case HCI_ACLDATA_PKT: 684 if (!data->bulk_tx_ep || hdev->conn_hash.acl_num < 1) 685 return -ENODEV; 686 687 urb = usb_alloc_urb(0, GFP_ATOMIC); 688 if (!urb) 689 return -ENOMEM; 690 691 pipe = usb_sndbulkpipe(data->udev, 692 data->bulk_tx_ep->bEndpointAddress); 693 694 usb_fill_bulk_urb(urb, data->udev, pipe, 695 skb->data, skb->len, btusb_tx_complete, skb); 696 697 hdev->stat.acl_tx++; 698 break; 699 700 case HCI_SCODATA_PKT: 701 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1) 702 return -ENODEV; 703 704 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC); 705 if (!urb) 706 return -ENOMEM; 707 708 pipe = usb_sndisocpipe(data->udev, 709 data->isoc_tx_ep->bEndpointAddress); 710 711 urb->dev = data->udev; 712 urb->pipe = pipe; 713 urb->context = skb; 714 urb->complete = btusb_isoc_tx_complete; 715 urb->interval = data->isoc_tx_ep->bInterval; 716 717 urb->transfer_flags = URB_ISO_ASAP; 718 urb->transfer_buffer = skb->data; 719 urb->transfer_buffer_length = skb->len; 720 721 __fill_isoc_descriptor(urb, skb->len, 722 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize)); 723 724 hdev->stat.sco_tx++; 725 goto skip_waking; 726 727 default: 728 return -EILSEQ; 729 } 730 731 err = inc_tx(data); 732 if (err) { 733 usb_anchor_urb(urb, &data->deferred); 734 schedule_work(&data->waker); 735 err = 0; 736 goto done; 737 } 738 739 skip_waking: 740 usb_anchor_urb(urb, &data->tx_anchor); 741 742 err = usb_submit_urb(urb, GFP_ATOMIC); 743 if (err < 0) { 744 BT_ERR("%s urb %p submission failed", hdev->name, urb); 745 kfree(urb->setup_packet); 746 usb_unanchor_urb(urb); 747 } else { 748 usb_mark_last_busy(data->udev); 749 } 750 751 usb_free_urb(urb); 752 753 done: 754 return err; 755 } 756 757 static void btusb_destruct(struct hci_dev *hdev) 758 { 759 struct btusb_data *data = hdev->driver_data; 760 761 BT_DBG("%s", hdev->name); 762 763 kfree(data); 764 } 765 766 static void btusb_notify(struct hci_dev *hdev, unsigned int evt) 767 { 768 struct btusb_data *data = hdev->driver_data; 769 770 BT_DBG("%s evt %d", hdev->name, evt); 771 772 if (hdev->conn_hash.sco_num != data->sco_num) { 773 data->sco_num = hdev->conn_hash.sco_num; 774 schedule_work(&data->work); 775 } 776 } 777 778 static int inline __set_isoc_interface(struct hci_dev *hdev, int altsetting) 779 { 780 struct btusb_data *data = hdev->driver_data; 781 struct usb_interface *intf = data->isoc; 782 struct usb_endpoint_descriptor *ep_desc; 783 int i, err; 784 785 if (!data->isoc) 786 return -ENODEV; 787 788 err = usb_set_interface(data->udev, 1, altsetting); 789 if (err < 0) { 790 BT_ERR("%s setting interface failed (%d)", hdev->name, -err); 791 return err; 792 } 793 794 data->isoc_altsetting = altsetting; 795 796 data->isoc_tx_ep = NULL; 797 data->isoc_rx_ep = NULL; 798 799 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { 800 ep_desc = &intf->cur_altsetting->endpoint[i].desc; 801 802 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) { 803 data->isoc_tx_ep = ep_desc; 804 continue; 805 } 806 807 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) { 808 data->isoc_rx_ep = ep_desc; 809 continue; 810 } 811 } 812 813 if (!data->isoc_tx_ep || !data->isoc_rx_ep) { 814 BT_ERR("%s invalid SCO descriptors", hdev->name); 815 return -ENODEV; 816 } 817 818 return 0; 819 } 820 821 static void btusb_work(struct work_struct *work) 822 { 823 struct btusb_data *data = container_of(work, struct btusb_data, work); 824 struct hci_dev *hdev = data->hdev; 825 int err; 826 827 if (hdev->conn_hash.sco_num > 0) { 828 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) { 829 err = usb_autopm_get_interface(data->isoc); 830 if (err < 0) { 831 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 832 usb_kill_anchored_urbs(&data->isoc_anchor); 833 return; 834 } 835 836 set_bit(BTUSB_DID_ISO_RESUME, &data->flags); 837 } 838 if (data->isoc_altsetting != 2) { 839 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 840 usb_kill_anchored_urbs(&data->isoc_anchor); 841 842 if (__set_isoc_interface(hdev, 2) < 0) 843 return; 844 } 845 846 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) { 847 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0) 848 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 849 else 850 btusb_submit_isoc_urb(hdev, GFP_KERNEL); 851 } 852 } else { 853 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 854 usb_kill_anchored_urbs(&data->isoc_anchor); 855 856 __set_isoc_interface(hdev, 0); 857 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags)) 858 usb_autopm_put_interface(data->isoc); 859 } 860 } 861 862 static void btusb_waker(struct work_struct *work) 863 { 864 struct btusb_data *data = container_of(work, struct btusb_data, waker); 865 int err; 866 867 err = usb_autopm_get_interface(data->intf); 868 if (err < 0) 869 return; 870 871 usb_autopm_put_interface(data->intf); 872 } 873 874 static int btusb_probe(struct usb_interface *intf, 875 const struct usb_device_id *id) 876 { 877 struct usb_endpoint_descriptor *ep_desc; 878 struct btusb_data *data; 879 struct hci_dev *hdev; 880 int i, err; 881 882 BT_DBG("intf %p id %p", intf, id); 883 884 /* interface numbers are hardcoded in the spec */ 885 if (intf->cur_altsetting->desc.bInterfaceNumber != 0) 886 return -ENODEV; 887 888 if (!id->driver_info) { 889 const struct usb_device_id *match; 890 match = usb_match_id(intf, blacklist_table); 891 if (match) 892 id = match; 893 } 894 895 if (id->driver_info == BTUSB_IGNORE) 896 return -ENODEV; 897 898 if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER) 899 return -ENODEV; 900 901 if (ignore_csr && id->driver_info & BTUSB_CSR) 902 return -ENODEV; 903 904 if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER) 905 return -ENODEV; 906 907 data = kzalloc(sizeof(*data), GFP_KERNEL); 908 if (!data) 909 return -ENOMEM; 910 911 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { 912 ep_desc = &intf->cur_altsetting->endpoint[i].desc; 913 914 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) { 915 data->intr_ep = ep_desc; 916 continue; 917 } 918 919 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) { 920 data->bulk_tx_ep = ep_desc; 921 continue; 922 } 923 924 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) { 925 data->bulk_rx_ep = ep_desc; 926 continue; 927 } 928 } 929 930 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) { 931 kfree(data); 932 return -ENODEV; 933 } 934 935 data->cmdreq_type = USB_TYPE_CLASS; 936 937 data->udev = interface_to_usbdev(intf); 938 data->intf = intf; 939 940 spin_lock_init(&data->lock); 941 942 INIT_WORK(&data->work, btusb_work); 943 INIT_WORK(&data->waker, btusb_waker); 944 spin_lock_init(&data->txlock); 945 946 init_usb_anchor(&data->tx_anchor); 947 init_usb_anchor(&data->intr_anchor); 948 init_usb_anchor(&data->bulk_anchor); 949 init_usb_anchor(&data->isoc_anchor); 950 init_usb_anchor(&data->deferred); 951 952 hdev = hci_alloc_dev(); 953 if (!hdev) { 954 kfree(data); 955 return -ENOMEM; 956 } 957 958 hdev->bus = HCI_USB; 959 hdev->driver_data = data; 960 961 data->hdev = hdev; 962 963 SET_HCIDEV_DEV(hdev, &intf->dev); 964 965 hdev->open = btusb_open; 966 hdev->close = btusb_close; 967 hdev->flush = btusb_flush; 968 hdev->send = btusb_send_frame; 969 hdev->destruct = btusb_destruct; 970 hdev->notify = btusb_notify; 971 972 hdev->owner = THIS_MODULE; 973 974 /* Interface numbers are hardcoded in the specification */ 975 data->isoc = usb_ifnum_to_if(data->udev, 1); 976 977 if (!reset) 978 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks); 979 980 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) { 981 if (!disable_scofix) 982 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks); 983 } 984 985 if (id->driver_info & BTUSB_BROKEN_ISOC) 986 data->isoc = NULL; 987 988 if (id->driver_info & BTUSB_DIGIANSWER) { 989 data->cmdreq_type = USB_TYPE_VENDOR; 990 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks); 991 } 992 993 if (id->driver_info & BTUSB_CSR) { 994 struct usb_device *udev = data->udev; 995 996 /* Old firmware would otherwise execute USB reset */ 997 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117) 998 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks); 999 } 1000 1001 if (id->driver_info & BTUSB_SNIFFER) { 1002 struct usb_device *udev = data->udev; 1003 1004 /* New sniffer firmware has crippled HCI interface */ 1005 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997) 1006 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks); 1007 1008 data->isoc = NULL; 1009 } 1010 1011 if (id->driver_info & BTUSB_BCM92035) { 1012 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 }; 1013 struct sk_buff *skb; 1014 1015 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL); 1016 if (skb) { 1017 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd)); 1018 skb_queue_tail(&hdev->driver_init, skb); 1019 } 1020 } 1021 1022 if (data->isoc) { 1023 err = usb_driver_claim_interface(&btusb_driver, 1024 data->isoc, data); 1025 if (err < 0) { 1026 hci_free_dev(hdev); 1027 kfree(data); 1028 return err; 1029 } 1030 } 1031 1032 err = hci_register_dev(hdev); 1033 if (err < 0) { 1034 hci_free_dev(hdev); 1035 kfree(data); 1036 return err; 1037 } 1038 1039 usb_set_intfdata(intf, data); 1040 1041 usb_enable_autosuspend(interface_to_usbdev(intf)); 1042 1043 return 0; 1044 } 1045 1046 static void btusb_disconnect(struct usb_interface *intf) 1047 { 1048 struct btusb_data *data = usb_get_intfdata(intf); 1049 struct hci_dev *hdev; 1050 1051 BT_DBG("intf %p", intf); 1052 1053 if (!data) 1054 return; 1055 1056 hdev = data->hdev; 1057 1058 __hci_dev_hold(hdev); 1059 1060 usb_set_intfdata(data->intf, NULL); 1061 1062 if (data->isoc) 1063 usb_set_intfdata(data->isoc, NULL); 1064 1065 hci_unregister_dev(hdev); 1066 1067 if (intf == data->isoc) 1068 usb_driver_release_interface(&btusb_driver, data->intf); 1069 else if (data->isoc) 1070 usb_driver_release_interface(&btusb_driver, data->isoc); 1071 1072 __hci_dev_put(hdev); 1073 1074 hci_free_dev(hdev); 1075 } 1076 1077 #ifdef CONFIG_PM 1078 static int btusb_suspend(struct usb_interface *intf, pm_message_t message) 1079 { 1080 struct btusb_data *data = usb_get_intfdata(intf); 1081 1082 BT_DBG("intf %p", intf); 1083 1084 if (data->suspend_count++) 1085 return 0; 1086 1087 spin_lock_irq(&data->txlock); 1088 if (!((message.event & PM_EVENT_AUTO) && data->tx_in_flight)) { 1089 set_bit(BTUSB_SUSPENDING, &data->flags); 1090 spin_unlock_irq(&data->txlock); 1091 } else { 1092 spin_unlock_irq(&data->txlock); 1093 data->suspend_count--; 1094 return -EBUSY; 1095 } 1096 1097 cancel_work_sync(&data->work); 1098 1099 btusb_stop_traffic(data); 1100 usb_kill_anchored_urbs(&data->tx_anchor); 1101 1102 return 0; 1103 } 1104 1105 static void play_deferred(struct btusb_data *data) 1106 { 1107 struct urb *urb; 1108 int err; 1109 1110 while ((urb = usb_get_from_anchor(&data->deferred))) { 1111 err = usb_submit_urb(urb, GFP_ATOMIC); 1112 if (err < 0) 1113 break; 1114 1115 data->tx_in_flight++; 1116 } 1117 usb_scuttle_anchored_urbs(&data->deferred); 1118 } 1119 1120 static int btusb_resume(struct usb_interface *intf) 1121 { 1122 struct btusb_data *data = usb_get_intfdata(intf); 1123 struct hci_dev *hdev = data->hdev; 1124 int err = 0; 1125 1126 BT_DBG("intf %p", intf); 1127 1128 if (--data->suspend_count) 1129 return 0; 1130 1131 if (!test_bit(HCI_RUNNING, &hdev->flags)) 1132 goto done; 1133 1134 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) { 1135 err = btusb_submit_intr_urb(hdev, GFP_NOIO); 1136 if (err < 0) { 1137 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 1138 goto failed; 1139 } 1140 } 1141 1142 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) { 1143 err = btusb_submit_bulk_urb(hdev, GFP_NOIO); 1144 if (err < 0) { 1145 clear_bit(BTUSB_BULK_RUNNING, &data->flags); 1146 goto failed; 1147 } 1148 1149 btusb_submit_bulk_urb(hdev, GFP_NOIO); 1150 } 1151 1152 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) { 1153 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0) 1154 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1155 else 1156 btusb_submit_isoc_urb(hdev, GFP_NOIO); 1157 } 1158 1159 spin_lock_irq(&data->txlock); 1160 play_deferred(data); 1161 clear_bit(BTUSB_SUSPENDING, &data->flags); 1162 spin_unlock_irq(&data->txlock); 1163 schedule_work(&data->work); 1164 1165 return 0; 1166 1167 failed: 1168 usb_scuttle_anchored_urbs(&data->deferred); 1169 done: 1170 spin_lock_irq(&data->txlock); 1171 clear_bit(BTUSB_SUSPENDING, &data->flags); 1172 spin_unlock_irq(&data->txlock); 1173 1174 return err; 1175 } 1176 #endif 1177 1178 static struct usb_driver btusb_driver = { 1179 .name = "btusb", 1180 .probe = btusb_probe, 1181 .disconnect = btusb_disconnect, 1182 #ifdef CONFIG_PM 1183 .suspend = btusb_suspend, 1184 .resume = btusb_resume, 1185 #endif 1186 .id_table = btusb_table, 1187 .supports_autosuspend = 1, 1188 }; 1189 1190 static int __init btusb_init(void) 1191 { 1192 BT_INFO("Generic Bluetooth USB driver ver %s", VERSION); 1193 1194 return usb_register(&btusb_driver); 1195 } 1196 1197 static void __exit btusb_exit(void) 1198 { 1199 usb_deregister(&btusb_driver); 1200 } 1201 1202 module_init(btusb_init); 1203 module_exit(btusb_exit); 1204 1205 module_param(ignore_dga, bool, 0644); 1206 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001"); 1207 1208 module_param(ignore_csr, bool, 0644); 1209 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001"); 1210 1211 module_param(ignore_sniffer, bool, 0644); 1212 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002"); 1213 1214 module_param(disable_scofix, bool, 0644); 1215 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size"); 1216 1217 module_param(force_scofix, bool, 0644); 1218 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size"); 1219 1220 module_param(reset, bool, 0644); 1221 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization"); 1222 1223 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); 1224 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION); 1225 MODULE_VERSION(VERSION); 1226 MODULE_LICENSE("GPL"); 1227