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