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 /* Apple MacBookPro8,2 */ 75 { USB_DEVICE(0x05ac, 0x821a) }, 76 77 /* AVM BlueFRITZ! USB v2.0 */ 78 { USB_DEVICE(0x057c, 0x3800) }, 79 80 /* Bluetooth Ultraport Module from IBM */ 81 { USB_DEVICE(0x04bf, 0x030a) }, 82 83 /* ALPS Modules with non-standard id */ 84 { USB_DEVICE(0x044e, 0x3001) }, 85 { USB_DEVICE(0x044e, 0x3002) }, 86 87 /* Ericsson with non-standard id */ 88 { USB_DEVICE(0x0bdb, 0x1002) }, 89 90 /* Canyon CN-BTU1 with HID interfaces */ 91 { USB_DEVICE(0x0c10, 0x0000) }, 92 93 { } /* Terminating entry */ 94 }; 95 96 MODULE_DEVICE_TABLE(usb, btusb_table); 97 98 static struct usb_device_id blacklist_table[] = { 99 /* CSR BlueCore devices */ 100 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR }, 101 102 /* Broadcom BCM2033 without firmware */ 103 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE }, 104 105 /* Atheros 3011 with sflash firmware */ 106 { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE }, 107 { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE }, 108 109 /* Atheros AR9285 Malbec with sflash firmware */ 110 { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE }, 111 112 /* Atheros 3012 with sflash firmware */ 113 { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_IGNORE }, 114 115 /* Atheros AR5BBU12 with sflash firmware */ 116 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE }, 117 118 /* Broadcom BCM2035 */ 119 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU }, 120 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU }, 121 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 }, 122 123 /* Broadcom BCM2045 */ 124 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU }, 125 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU }, 126 127 /* IBM/Lenovo ThinkPad with Broadcom chip */ 128 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU }, 129 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU }, 130 131 /* HP laptop with Broadcom chip */ 132 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU }, 133 134 /* Dell laptop with Broadcom chip */ 135 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU }, 136 137 /* Dell Wireless 370 and 410 devices */ 138 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU }, 139 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU }, 140 141 /* Belkin F8T012 and F8T013 devices */ 142 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU }, 143 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU }, 144 145 /* Asus WL-BTD202 device */ 146 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU }, 147 148 /* Kensington Bluetooth USB adapter */ 149 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU }, 150 151 /* RTX Telecom based adapters with buggy SCO support */ 152 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC }, 153 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC }, 154 155 /* CONWISE Technology based adapters with buggy SCO support */ 156 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC }, 157 158 /* Digianswer devices */ 159 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER }, 160 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE }, 161 162 /* CSR BlueCore Bluetooth Sniffer */ 163 { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER }, 164 165 /* Frontline ComProbe Bluetooth Sniffer */ 166 { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER }, 167 168 { } /* Terminating entry */ 169 }; 170 171 #define BTUSB_MAX_ISOC_FRAMES 10 172 173 #define BTUSB_INTR_RUNNING 0 174 #define BTUSB_BULK_RUNNING 1 175 #define BTUSB_ISOC_RUNNING 2 176 #define BTUSB_SUSPENDING 3 177 #define BTUSB_DID_ISO_RESUME 4 178 179 struct btusb_data { 180 struct hci_dev *hdev; 181 struct usb_device *udev; 182 struct usb_interface *intf; 183 struct usb_interface *isoc; 184 185 spinlock_t lock; 186 187 unsigned long flags; 188 189 struct work_struct work; 190 struct work_struct waker; 191 192 struct usb_anchor tx_anchor; 193 struct usb_anchor intr_anchor; 194 struct usb_anchor bulk_anchor; 195 struct usb_anchor isoc_anchor; 196 struct usb_anchor deferred; 197 int tx_in_flight; 198 spinlock_t txlock; 199 200 struct usb_endpoint_descriptor *intr_ep; 201 struct usb_endpoint_descriptor *bulk_tx_ep; 202 struct usb_endpoint_descriptor *bulk_rx_ep; 203 struct usb_endpoint_descriptor *isoc_tx_ep; 204 struct usb_endpoint_descriptor *isoc_rx_ep; 205 206 __u8 cmdreq_type; 207 208 unsigned int sco_num; 209 int isoc_altsetting; 210 int suspend_count; 211 }; 212 213 static int inc_tx(struct btusb_data *data) 214 { 215 unsigned long flags; 216 int rv; 217 218 spin_lock_irqsave(&data->txlock, flags); 219 rv = test_bit(BTUSB_SUSPENDING, &data->flags); 220 if (!rv) 221 data->tx_in_flight++; 222 spin_unlock_irqrestore(&data->txlock, flags); 223 224 return rv; 225 } 226 227 static void btusb_intr_complete(struct urb *urb) 228 { 229 struct hci_dev *hdev = urb->context; 230 struct btusb_data *data = hdev->driver_data; 231 int err; 232 233 BT_DBG("%s urb %p status %d count %d", hdev->name, 234 urb, urb->status, urb->actual_length); 235 236 if (!test_bit(HCI_RUNNING, &hdev->flags)) 237 return; 238 239 if (urb->status == 0) { 240 hdev->stat.byte_rx += urb->actual_length; 241 242 if (hci_recv_fragment(hdev, HCI_EVENT_PKT, 243 urb->transfer_buffer, 244 urb->actual_length) < 0) { 245 BT_ERR("%s corrupted event packet", hdev->name); 246 hdev->stat.err_rx++; 247 } 248 } 249 250 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags)) 251 return; 252 253 usb_mark_last_busy(data->udev); 254 usb_anchor_urb(urb, &data->intr_anchor); 255 256 err = usb_submit_urb(urb, GFP_ATOMIC); 257 if (err < 0) { 258 if (err != -EPERM) 259 BT_ERR("%s urb %p failed to resubmit (%d)", 260 hdev->name, urb, -err); 261 usb_unanchor_urb(urb); 262 } 263 } 264 265 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags) 266 { 267 struct btusb_data *data = hdev->driver_data; 268 struct urb *urb; 269 unsigned char *buf; 270 unsigned int pipe; 271 int err, size; 272 273 BT_DBG("%s", hdev->name); 274 275 if (!data->intr_ep) 276 return -ENODEV; 277 278 urb = usb_alloc_urb(0, mem_flags); 279 if (!urb) 280 return -ENOMEM; 281 282 size = le16_to_cpu(data->intr_ep->wMaxPacketSize); 283 284 buf = kmalloc(size, mem_flags); 285 if (!buf) { 286 usb_free_urb(urb); 287 return -ENOMEM; 288 } 289 290 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress); 291 292 usb_fill_int_urb(urb, data->udev, pipe, buf, size, 293 btusb_intr_complete, hdev, 294 data->intr_ep->bInterval); 295 296 urb->transfer_flags |= URB_FREE_BUFFER; 297 298 usb_anchor_urb(urb, &data->intr_anchor); 299 300 err = usb_submit_urb(urb, mem_flags); 301 if (err < 0) { 302 BT_ERR("%s urb %p submission failed (%d)", 303 hdev->name, urb, -err); 304 usb_unanchor_urb(urb); 305 } 306 307 usb_free_urb(urb); 308 309 return err; 310 } 311 312 static void btusb_bulk_complete(struct urb *urb) 313 { 314 struct hci_dev *hdev = urb->context; 315 struct btusb_data *data = hdev->driver_data; 316 int err; 317 318 BT_DBG("%s urb %p status %d count %d", hdev->name, 319 urb, urb->status, urb->actual_length); 320 321 if (!test_bit(HCI_RUNNING, &hdev->flags)) 322 return; 323 324 if (urb->status == 0) { 325 hdev->stat.byte_rx += urb->actual_length; 326 327 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT, 328 urb->transfer_buffer, 329 urb->actual_length) < 0) { 330 BT_ERR("%s corrupted ACL packet", hdev->name); 331 hdev->stat.err_rx++; 332 } 333 } 334 335 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags)) 336 return; 337 338 usb_anchor_urb(urb, &data->bulk_anchor); 339 usb_mark_last_busy(data->udev); 340 341 err = usb_submit_urb(urb, GFP_ATOMIC); 342 if (err < 0) { 343 if (err != -EPERM) 344 BT_ERR("%s urb %p failed to resubmit (%d)", 345 hdev->name, urb, -err); 346 usb_unanchor_urb(urb); 347 } 348 } 349 350 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags) 351 { 352 struct btusb_data *data = hdev->driver_data; 353 struct urb *urb; 354 unsigned char *buf; 355 unsigned int pipe; 356 int err, size = HCI_MAX_FRAME_SIZE; 357 358 BT_DBG("%s", hdev->name); 359 360 if (!data->bulk_rx_ep) 361 return -ENODEV; 362 363 urb = usb_alloc_urb(0, mem_flags); 364 if (!urb) 365 return -ENOMEM; 366 367 buf = kmalloc(size, mem_flags); 368 if (!buf) { 369 usb_free_urb(urb); 370 return -ENOMEM; 371 } 372 373 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress); 374 375 usb_fill_bulk_urb(urb, data->udev, pipe, 376 buf, size, btusb_bulk_complete, hdev); 377 378 urb->transfer_flags |= URB_FREE_BUFFER; 379 380 usb_mark_last_busy(data->udev); 381 usb_anchor_urb(urb, &data->bulk_anchor); 382 383 err = usb_submit_urb(urb, mem_flags); 384 if (err < 0) { 385 BT_ERR("%s urb %p submission failed (%d)", 386 hdev->name, urb, -err); 387 usb_unanchor_urb(urb); 388 } 389 390 usb_free_urb(urb); 391 392 return err; 393 } 394 395 static void btusb_isoc_complete(struct urb *urb) 396 { 397 struct hci_dev *hdev = urb->context; 398 struct btusb_data *data = hdev->driver_data; 399 int i, err; 400 401 BT_DBG("%s urb %p status %d count %d", hdev->name, 402 urb, urb->status, urb->actual_length); 403 404 if (!test_bit(HCI_RUNNING, &hdev->flags)) 405 return; 406 407 if (urb->status == 0) { 408 for (i = 0; i < urb->number_of_packets; i++) { 409 unsigned int offset = urb->iso_frame_desc[i].offset; 410 unsigned int length = urb->iso_frame_desc[i].actual_length; 411 412 if (urb->iso_frame_desc[i].status) 413 continue; 414 415 hdev->stat.byte_rx += length; 416 417 if (hci_recv_fragment(hdev, HCI_SCODATA_PKT, 418 urb->transfer_buffer + offset, 419 length) < 0) { 420 BT_ERR("%s corrupted SCO packet", hdev->name); 421 hdev->stat.err_rx++; 422 } 423 } 424 } 425 426 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags)) 427 return; 428 429 usb_anchor_urb(urb, &data->isoc_anchor); 430 431 err = usb_submit_urb(urb, GFP_ATOMIC); 432 if (err < 0) { 433 if (err != -EPERM) 434 BT_ERR("%s urb %p failed to resubmit (%d)", 435 hdev->name, urb, -err); 436 usb_unanchor_urb(urb); 437 } 438 } 439 440 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu) 441 { 442 int i, offset = 0; 443 444 BT_DBG("len %d mtu %d", len, mtu); 445 446 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu; 447 i++, offset += mtu, len -= mtu) { 448 urb->iso_frame_desc[i].offset = offset; 449 urb->iso_frame_desc[i].length = mtu; 450 } 451 452 if (len && i < BTUSB_MAX_ISOC_FRAMES) { 453 urb->iso_frame_desc[i].offset = offset; 454 urb->iso_frame_desc[i].length = len; 455 i++; 456 } 457 458 urb->number_of_packets = i; 459 } 460 461 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags) 462 { 463 struct btusb_data *data = hdev->driver_data; 464 struct urb *urb; 465 unsigned char *buf; 466 unsigned int pipe; 467 int err, size; 468 469 BT_DBG("%s", hdev->name); 470 471 if (!data->isoc_rx_ep) 472 return -ENODEV; 473 474 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags); 475 if (!urb) 476 return -ENOMEM; 477 478 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) * 479 BTUSB_MAX_ISOC_FRAMES; 480 481 buf = kmalloc(size, mem_flags); 482 if (!buf) { 483 usb_free_urb(urb); 484 return -ENOMEM; 485 } 486 487 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress); 488 489 urb->dev = data->udev; 490 urb->pipe = pipe; 491 urb->context = hdev; 492 urb->complete = btusb_isoc_complete; 493 urb->interval = data->isoc_rx_ep->bInterval; 494 495 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP; 496 urb->transfer_buffer = buf; 497 urb->transfer_buffer_length = size; 498 499 __fill_isoc_descriptor(urb, size, 500 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize)); 501 502 usb_anchor_urb(urb, &data->isoc_anchor); 503 504 err = usb_submit_urb(urb, mem_flags); 505 if (err < 0) { 506 BT_ERR("%s urb %p submission failed (%d)", 507 hdev->name, urb, -err); 508 usb_unanchor_urb(urb); 509 } 510 511 usb_free_urb(urb); 512 513 return err; 514 } 515 516 static void btusb_tx_complete(struct urb *urb) 517 { 518 struct sk_buff *skb = urb->context; 519 struct hci_dev *hdev = (struct hci_dev *) skb->dev; 520 struct btusb_data *data = hdev->driver_data; 521 522 BT_DBG("%s urb %p status %d count %d", hdev->name, 523 urb, urb->status, urb->actual_length); 524 525 if (!test_bit(HCI_RUNNING, &hdev->flags)) 526 goto done; 527 528 if (!urb->status) 529 hdev->stat.byte_tx += urb->transfer_buffer_length; 530 else 531 hdev->stat.err_tx++; 532 533 done: 534 spin_lock(&data->txlock); 535 data->tx_in_flight--; 536 spin_unlock(&data->txlock); 537 538 kfree(urb->setup_packet); 539 540 kfree_skb(skb); 541 } 542 543 static void btusb_isoc_tx_complete(struct urb *urb) 544 { 545 struct sk_buff *skb = urb->context; 546 struct hci_dev *hdev = (struct hci_dev *) skb->dev; 547 548 BT_DBG("%s urb %p status %d count %d", hdev->name, 549 urb, urb->status, urb->actual_length); 550 551 if (!test_bit(HCI_RUNNING, &hdev->flags)) 552 goto done; 553 554 if (!urb->status) 555 hdev->stat.byte_tx += urb->transfer_buffer_length; 556 else 557 hdev->stat.err_tx++; 558 559 done: 560 kfree(urb->setup_packet); 561 562 kfree_skb(skb); 563 } 564 565 static int btusb_open(struct hci_dev *hdev) 566 { 567 struct btusb_data *data = hdev->driver_data; 568 int err; 569 570 BT_DBG("%s", hdev->name); 571 572 err = usb_autopm_get_interface(data->intf); 573 if (err < 0) 574 return err; 575 576 data->intf->needs_remote_wakeup = 1; 577 578 if (test_and_set_bit(HCI_RUNNING, &hdev->flags)) 579 goto done; 580 581 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags)) 582 goto done; 583 584 err = btusb_submit_intr_urb(hdev, GFP_KERNEL); 585 if (err < 0) 586 goto failed; 587 588 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL); 589 if (err < 0) { 590 usb_kill_anchored_urbs(&data->intr_anchor); 591 goto failed; 592 } 593 594 set_bit(BTUSB_BULK_RUNNING, &data->flags); 595 btusb_submit_bulk_urb(hdev, GFP_KERNEL); 596 597 done: 598 usb_autopm_put_interface(data->intf); 599 return 0; 600 601 failed: 602 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 603 clear_bit(HCI_RUNNING, &hdev->flags); 604 usb_autopm_put_interface(data->intf); 605 return err; 606 } 607 608 static void btusb_stop_traffic(struct btusb_data *data) 609 { 610 usb_kill_anchored_urbs(&data->intr_anchor); 611 usb_kill_anchored_urbs(&data->bulk_anchor); 612 usb_kill_anchored_urbs(&data->isoc_anchor); 613 } 614 615 static int btusb_close(struct hci_dev *hdev) 616 { 617 struct btusb_data *data = hdev->driver_data; 618 int err; 619 620 BT_DBG("%s", hdev->name); 621 622 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags)) 623 return 0; 624 625 cancel_work_sync(&data->work); 626 cancel_work_sync(&data->waker); 627 628 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 629 clear_bit(BTUSB_BULK_RUNNING, &data->flags); 630 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 631 632 btusb_stop_traffic(data); 633 err = usb_autopm_get_interface(data->intf); 634 if (err < 0) 635 goto failed; 636 637 data->intf->needs_remote_wakeup = 0; 638 usb_autopm_put_interface(data->intf); 639 640 failed: 641 usb_scuttle_anchored_urbs(&data->deferred); 642 return 0; 643 } 644 645 static int btusb_flush(struct hci_dev *hdev) 646 { 647 struct btusb_data *data = hdev->driver_data; 648 649 BT_DBG("%s", hdev->name); 650 651 usb_kill_anchored_urbs(&data->tx_anchor); 652 653 return 0; 654 } 655 656 static int btusb_send_frame(struct sk_buff *skb) 657 { 658 struct hci_dev *hdev = (struct hci_dev *) skb->dev; 659 struct btusb_data *data = hdev->driver_data; 660 struct usb_ctrlrequest *dr; 661 struct urb *urb; 662 unsigned int pipe; 663 int err; 664 665 BT_DBG("%s", hdev->name); 666 667 if (!test_bit(HCI_RUNNING, &hdev->flags)) 668 return -EBUSY; 669 670 switch (bt_cb(skb)->pkt_type) { 671 case HCI_COMMAND_PKT: 672 urb = usb_alloc_urb(0, GFP_ATOMIC); 673 if (!urb) 674 return -ENOMEM; 675 676 dr = kmalloc(sizeof(*dr), GFP_ATOMIC); 677 if (!dr) { 678 usb_free_urb(urb); 679 return -ENOMEM; 680 } 681 682 dr->bRequestType = data->cmdreq_type; 683 dr->bRequest = 0; 684 dr->wIndex = 0; 685 dr->wValue = 0; 686 dr->wLength = __cpu_to_le16(skb->len); 687 688 pipe = usb_sndctrlpipe(data->udev, 0x00); 689 690 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr, 691 skb->data, skb->len, btusb_tx_complete, skb); 692 693 hdev->stat.cmd_tx++; 694 break; 695 696 case HCI_ACLDATA_PKT: 697 if (!data->bulk_tx_ep || (hdev->conn_hash.acl_num < 1 && 698 hdev->conn_hash.le_num < 1)) 699 return -ENODEV; 700 701 urb = usb_alloc_urb(0, GFP_ATOMIC); 702 if (!urb) 703 return -ENOMEM; 704 705 pipe = usb_sndbulkpipe(data->udev, 706 data->bulk_tx_ep->bEndpointAddress); 707 708 usb_fill_bulk_urb(urb, data->udev, pipe, 709 skb->data, skb->len, btusb_tx_complete, skb); 710 711 hdev->stat.acl_tx++; 712 break; 713 714 case HCI_SCODATA_PKT: 715 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1) 716 return -ENODEV; 717 718 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC); 719 if (!urb) 720 return -ENOMEM; 721 722 pipe = usb_sndisocpipe(data->udev, 723 data->isoc_tx_ep->bEndpointAddress); 724 725 usb_fill_int_urb(urb, data->udev, pipe, 726 skb->data, skb->len, btusb_isoc_tx_complete, 727 skb, data->isoc_tx_ep->bInterval); 728 729 urb->transfer_flags = URB_ISO_ASAP; 730 731 __fill_isoc_descriptor(urb, skb->len, 732 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize)); 733 734 hdev->stat.sco_tx++; 735 goto skip_waking; 736 737 default: 738 return -EILSEQ; 739 } 740 741 err = inc_tx(data); 742 if (err) { 743 usb_anchor_urb(urb, &data->deferred); 744 schedule_work(&data->waker); 745 err = 0; 746 goto done; 747 } 748 749 skip_waking: 750 usb_anchor_urb(urb, &data->tx_anchor); 751 752 err = usb_submit_urb(urb, GFP_ATOMIC); 753 if (err < 0) { 754 BT_ERR("%s urb %p submission failed", hdev->name, urb); 755 kfree(urb->setup_packet); 756 usb_unanchor_urb(urb); 757 } else { 758 usb_mark_last_busy(data->udev); 759 } 760 761 usb_free_urb(urb); 762 763 done: 764 return err; 765 } 766 767 static void btusb_destruct(struct hci_dev *hdev) 768 { 769 struct btusb_data *data = hdev->driver_data; 770 771 BT_DBG("%s", hdev->name); 772 773 kfree(data); 774 } 775 776 static void btusb_notify(struct hci_dev *hdev, unsigned int evt) 777 { 778 struct btusb_data *data = hdev->driver_data; 779 780 BT_DBG("%s evt %d", hdev->name, evt); 781 782 if (hdev->conn_hash.sco_num != data->sco_num) { 783 data->sco_num = hdev->conn_hash.sco_num; 784 schedule_work(&data->work); 785 } 786 } 787 788 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting) 789 { 790 struct btusb_data *data = hdev->driver_data; 791 struct usb_interface *intf = data->isoc; 792 struct usb_endpoint_descriptor *ep_desc; 793 int i, err; 794 795 if (!data->isoc) 796 return -ENODEV; 797 798 err = usb_set_interface(data->udev, 1, altsetting); 799 if (err < 0) { 800 BT_ERR("%s setting interface failed (%d)", hdev->name, -err); 801 return err; 802 } 803 804 data->isoc_altsetting = altsetting; 805 806 data->isoc_tx_ep = NULL; 807 data->isoc_rx_ep = NULL; 808 809 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { 810 ep_desc = &intf->cur_altsetting->endpoint[i].desc; 811 812 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) { 813 data->isoc_tx_ep = ep_desc; 814 continue; 815 } 816 817 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) { 818 data->isoc_rx_ep = ep_desc; 819 continue; 820 } 821 } 822 823 if (!data->isoc_tx_ep || !data->isoc_rx_ep) { 824 BT_ERR("%s invalid SCO descriptors", hdev->name); 825 return -ENODEV; 826 } 827 828 return 0; 829 } 830 831 static void btusb_work(struct work_struct *work) 832 { 833 struct btusb_data *data = container_of(work, struct btusb_data, work); 834 struct hci_dev *hdev = data->hdev; 835 int err; 836 837 if (hdev->conn_hash.sco_num > 0) { 838 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) { 839 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf); 840 if (err < 0) { 841 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 842 usb_kill_anchored_urbs(&data->isoc_anchor); 843 return; 844 } 845 846 set_bit(BTUSB_DID_ISO_RESUME, &data->flags); 847 } 848 if (data->isoc_altsetting != 2) { 849 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 850 usb_kill_anchored_urbs(&data->isoc_anchor); 851 852 if (__set_isoc_interface(hdev, 2) < 0) 853 return; 854 } 855 856 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) { 857 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0) 858 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 859 else 860 btusb_submit_isoc_urb(hdev, GFP_KERNEL); 861 } 862 } else { 863 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 864 usb_kill_anchored_urbs(&data->isoc_anchor); 865 866 __set_isoc_interface(hdev, 0); 867 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags)) 868 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf); 869 } 870 } 871 872 static void btusb_waker(struct work_struct *work) 873 { 874 struct btusb_data *data = container_of(work, struct btusb_data, waker); 875 int err; 876 877 err = usb_autopm_get_interface(data->intf); 878 if (err < 0) 879 return; 880 881 usb_autopm_put_interface(data->intf); 882 } 883 884 static int btusb_probe(struct usb_interface *intf, 885 const struct usb_device_id *id) 886 { 887 struct usb_endpoint_descriptor *ep_desc; 888 struct btusb_data *data; 889 struct hci_dev *hdev; 890 int i, err; 891 892 BT_DBG("intf %p id %p", intf, id); 893 894 /* interface numbers are hardcoded in the spec */ 895 if (intf->cur_altsetting->desc.bInterfaceNumber != 0) 896 return -ENODEV; 897 898 if (!id->driver_info) { 899 const struct usb_device_id *match; 900 match = usb_match_id(intf, blacklist_table); 901 if (match) 902 id = match; 903 } 904 905 if (id->driver_info == BTUSB_IGNORE) 906 return -ENODEV; 907 908 if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER) 909 return -ENODEV; 910 911 if (ignore_csr && id->driver_info & BTUSB_CSR) 912 return -ENODEV; 913 914 if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER) 915 return -ENODEV; 916 917 data = kzalloc(sizeof(*data), GFP_KERNEL); 918 if (!data) 919 return -ENOMEM; 920 921 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { 922 ep_desc = &intf->cur_altsetting->endpoint[i].desc; 923 924 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) { 925 data->intr_ep = ep_desc; 926 continue; 927 } 928 929 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) { 930 data->bulk_tx_ep = ep_desc; 931 continue; 932 } 933 934 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) { 935 data->bulk_rx_ep = ep_desc; 936 continue; 937 } 938 } 939 940 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) { 941 kfree(data); 942 return -ENODEV; 943 } 944 945 data->cmdreq_type = USB_TYPE_CLASS; 946 947 data->udev = interface_to_usbdev(intf); 948 data->intf = intf; 949 950 spin_lock_init(&data->lock); 951 952 INIT_WORK(&data->work, btusb_work); 953 INIT_WORK(&data->waker, btusb_waker); 954 spin_lock_init(&data->txlock); 955 956 init_usb_anchor(&data->tx_anchor); 957 init_usb_anchor(&data->intr_anchor); 958 init_usb_anchor(&data->bulk_anchor); 959 init_usb_anchor(&data->isoc_anchor); 960 init_usb_anchor(&data->deferred); 961 962 hdev = hci_alloc_dev(); 963 if (!hdev) { 964 kfree(data); 965 return -ENOMEM; 966 } 967 968 hdev->bus = HCI_USB; 969 hdev->driver_data = data; 970 971 data->hdev = hdev; 972 973 SET_HCIDEV_DEV(hdev, &intf->dev); 974 975 hdev->open = btusb_open; 976 hdev->close = btusb_close; 977 hdev->flush = btusb_flush; 978 hdev->send = btusb_send_frame; 979 hdev->destruct = btusb_destruct; 980 hdev->notify = btusb_notify; 981 982 hdev->owner = THIS_MODULE; 983 984 /* Interface numbers are hardcoded in the specification */ 985 data->isoc = usb_ifnum_to_if(data->udev, 1); 986 987 if (!reset) 988 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks); 989 990 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) { 991 if (!disable_scofix) 992 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks); 993 } 994 995 if (id->driver_info & BTUSB_BROKEN_ISOC) 996 data->isoc = NULL; 997 998 if (id->driver_info & BTUSB_DIGIANSWER) { 999 data->cmdreq_type = USB_TYPE_VENDOR; 1000 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks); 1001 } 1002 1003 if (id->driver_info & BTUSB_CSR) { 1004 struct usb_device *udev = data->udev; 1005 1006 /* Old firmware would otherwise execute USB reset */ 1007 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117) 1008 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks); 1009 } 1010 1011 if (id->driver_info & BTUSB_SNIFFER) { 1012 struct usb_device *udev = data->udev; 1013 1014 /* New sniffer firmware has crippled HCI interface */ 1015 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997) 1016 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks); 1017 1018 data->isoc = NULL; 1019 } 1020 1021 if (id->driver_info & BTUSB_BCM92035) { 1022 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 }; 1023 struct sk_buff *skb; 1024 1025 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL); 1026 if (skb) { 1027 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd)); 1028 skb_queue_tail(&hdev->driver_init, skb); 1029 } 1030 } 1031 1032 if (data->isoc) { 1033 err = usb_driver_claim_interface(&btusb_driver, 1034 data->isoc, data); 1035 if (err < 0) { 1036 hci_free_dev(hdev); 1037 kfree(data); 1038 return err; 1039 } 1040 } 1041 1042 err = hci_register_dev(hdev); 1043 if (err < 0) { 1044 hci_free_dev(hdev); 1045 kfree(data); 1046 return err; 1047 } 1048 1049 usb_set_intfdata(intf, data); 1050 1051 return 0; 1052 } 1053 1054 static void btusb_disconnect(struct usb_interface *intf) 1055 { 1056 struct btusb_data *data = usb_get_intfdata(intf); 1057 struct hci_dev *hdev; 1058 1059 BT_DBG("intf %p", intf); 1060 1061 if (!data) 1062 return; 1063 1064 hdev = data->hdev; 1065 1066 __hci_dev_hold(hdev); 1067 1068 usb_set_intfdata(data->intf, NULL); 1069 1070 if (data->isoc) 1071 usb_set_intfdata(data->isoc, NULL); 1072 1073 hci_unregister_dev(hdev); 1074 1075 if (intf == data->isoc) 1076 usb_driver_release_interface(&btusb_driver, data->intf); 1077 else if (data->isoc) 1078 usb_driver_release_interface(&btusb_driver, data->isoc); 1079 1080 __hci_dev_put(hdev); 1081 1082 hci_free_dev(hdev); 1083 } 1084 1085 #ifdef CONFIG_PM 1086 static int btusb_suspend(struct usb_interface *intf, pm_message_t message) 1087 { 1088 struct btusb_data *data = usb_get_intfdata(intf); 1089 1090 BT_DBG("intf %p", intf); 1091 1092 if (data->suspend_count++) 1093 return 0; 1094 1095 spin_lock_irq(&data->txlock); 1096 if (!((message.event & PM_EVENT_AUTO) && data->tx_in_flight)) { 1097 set_bit(BTUSB_SUSPENDING, &data->flags); 1098 spin_unlock_irq(&data->txlock); 1099 } else { 1100 spin_unlock_irq(&data->txlock); 1101 data->suspend_count--; 1102 return -EBUSY; 1103 } 1104 1105 cancel_work_sync(&data->work); 1106 1107 btusb_stop_traffic(data); 1108 usb_kill_anchored_urbs(&data->tx_anchor); 1109 1110 return 0; 1111 } 1112 1113 static void play_deferred(struct btusb_data *data) 1114 { 1115 struct urb *urb; 1116 int err; 1117 1118 while ((urb = usb_get_from_anchor(&data->deferred))) { 1119 err = usb_submit_urb(urb, GFP_ATOMIC); 1120 if (err < 0) 1121 break; 1122 1123 data->tx_in_flight++; 1124 } 1125 usb_scuttle_anchored_urbs(&data->deferred); 1126 } 1127 1128 static int btusb_resume(struct usb_interface *intf) 1129 { 1130 struct btusb_data *data = usb_get_intfdata(intf); 1131 struct hci_dev *hdev = data->hdev; 1132 int err = 0; 1133 1134 BT_DBG("intf %p", intf); 1135 1136 if (--data->suspend_count) 1137 return 0; 1138 1139 if (!test_bit(HCI_RUNNING, &hdev->flags)) 1140 goto done; 1141 1142 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) { 1143 err = btusb_submit_intr_urb(hdev, GFP_NOIO); 1144 if (err < 0) { 1145 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 1146 goto failed; 1147 } 1148 } 1149 1150 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) { 1151 err = btusb_submit_bulk_urb(hdev, GFP_NOIO); 1152 if (err < 0) { 1153 clear_bit(BTUSB_BULK_RUNNING, &data->flags); 1154 goto failed; 1155 } 1156 1157 btusb_submit_bulk_urb(hdev, GFP_NOIO); 1158 } 1159 1160 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) { 1161 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0) 1162 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1163 else 1164 btusb_submit_isoc_urb(hdev, GFP_NOIO); 1165 } 1166 1167 spin_lock_irq(&data->txlock); 1168 play_deferred(data); 1169 clear_bit(BTUSB_SUSPENDING, &data->flags); 1170 spin_unlock_irq(&data->txlock); 1171 schedule_work(&data->work); 1172 1173 return 0; 1174 1175 failed: 1176 usb_scuttle_anchored_urbs(&data->deferred); 1177 done: 1178 spin_lock_irq(&data->txlock); 1179 clear_bit(BTUSB_SUSPENDING, &data->flags); 1180 spin_unlock_irq(&data->txlock); 1181 1182 return err; 1183 } 1184 #endif 1185 1186 static struct usb_driver btusb_driver = { 1187 .name = "btusb", 1188 .probe = btusb_probe, 1189 .disconnect = btusb_disconnect, 1190 #ifdef CONFIG_PM 1191 .suspend = btusb_suspend, 1192 .resume = btusb_resume, 1193 #endif 1194 .id_table = btusb_table, 1195 .supports_autosuspend = 1, 1196 }; 1197 1198 static int __init btusb_init(void) 1199 { 1200 BT_INFO("Generic Bluetooth USB driver ver %s", VERSION); 1201 1202 return usb_register(&btusb_driver); 1203 } 1204 1205 static void __exit btusb_exit(void) 1206 { 1207 usb_deregister(&btusb_driver); 1208 } 1209 1210 module_init(btusb_init); 1211 module_exit(btusb_exit); 1212 1213 module_param(ignore_dga, bool, 0644); 1214 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001"); 1215 1216 module_param(ignore_csr, bool, 0644); 1217 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001"); 1218 1219 module_param(ignore_sniffer, bool, 0644); 1220 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002"); 1221 1222 module_param(disable_scofix, bool, 0644); 1223 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size"); 1224 1225 module_param(force_scofix, bool, 0644); 1226 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size"); 1227 1228 module_param(reset, bool, 0644); 1229 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization"); 1230 1231 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); 1232 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION); 1233 MODULE_VERSION(VERSION); 1234 MODULE_LICENSE("GPL"); 1235