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