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 #define BTUSB_ATH3012 0x80 58 59 static struct usb_device_id btusb_table[] = { 60 /* Generic Bluetooth USB device */ 61 { USB_DEVICE_INFO(0xe0, 0x01, 0x01) }, 62 63 /* Broadcom SoftSailing reporting vendor specific */ 64 { USB_DEVICE(0x05ac, 0x21e1) }, 65 66 /* Apple MacBookPro 7,1 */ 67 { USB_DEVICE(0x05ac, 0x8213) }, 68 69 /* Apple iMac11,1 */ 70 { USB_DEVICE(0x05ac, 0x8215) }, 71 72 /* Apple MacBookPro6,2 */ 73 { USB_DEVICE(0x05ac, 0x8218) }, 74 75 /* Apple MacBookAir3,1, MacBookAir3,2 */ 76 { USB_DEVICE(0x05ac, 0x821b) }, 77 78 /* Apple MacBookAir4,1 */ 79 { USB_DEVICE(0x05ac, 0x821f) }, 80 81 /* Apple MacBookPro8,2 */ 82 { USB_DEVICE(0x05ac, 0x821a) }, 83 84 /* Apple MacMini5,1 */ 85 { USB_DEVICE(0x05ac, 0x8281) }, 86 87 /* AVM BlueFRITZ! USB v2.0 */ 88 { USB_DEVICE(0x057c, 0x3800) }, 89 90 /* Bluetooth Ultraport Module from IBM */ 91 { USB_DEVICE(0x04bf, 0x030a) }, 92 93 /* ALPS Modules with non-standard id */ 94 { USB_DEVICE(0x044e, 0x3001) }, 95 { USB_DEVICE(0x044e, 0x3002) }, 96 97 /* Ericsson with non-standard id */ 98 { USB_DEVICE(0x0bdb, 0x1002) }, 99 100 /* Canyon CN-BTU1 with HID interfaces */ 101 { USB_DEVICE(0x0c10, 0x0000) }, 102 103 /* Broadcom BCM20702A0 */ 104 { USB_DEVICE(0x413c, 0x8197) }, 105 106 { } /* Terminating entry */ 107 }; 108 109 MODULE_DEVICE_TABLE(usb, btusb_table); 110 111 static struct usb_device_id blacklist_table[] = { 112 /* CSR BlueCore devices */ 113 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR }, 114 115 /* Broadcom BCM2033 without firmware */ 116 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE }, 117 118 /* Atheros 3011 with sflash firmware */ 119 { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE }, 120 { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE }, 121 { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE }, 122 123 /* Atheros AR9285 Malbec with sflash firmware */ 124 { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE }, 125 126 /* Atheros 3012 with sflash firmware */ 127 { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 }, 128 129 /* Atheros AR5BBU12 with sflash firmware */ 130 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE }, 131 132 /* Broadcom BCM2035 */ 133 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU }, 134 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU }, 135 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 }, 136 137 /* Broadcom BCM2045 */ 138 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU }, 139 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU }, 140 141 /* IBM/Lenovo ThinkPad with Broadcom chip */ 142 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU }, 143 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU }, 144 145 /* HP laptop with Broadcom chip */ 146 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU }, 147 148 /* Dell laptop with Broadcom chip */ 149 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU }, 150 151 /* Dell Wireless 370 and 410 devices */ 152 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU }, 153 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU }, 154 155 /* Belkin F8T012 and F8T013 devices */ 156 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU }, 157 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU }, 158 159 /* Asus WL-BTD202 device */ 160 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU }, 161 162 /* Kensington Bluetooth USB adapter */ 163 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU }, 164 165 /* RTX Telecom based adapters with buggy SCO support */ 166 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC }, 167 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC }, 168 169 /* CONWISE Technology based adapters with buggy SCO support */ 170 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC }, 171 172 /* Digianswer devices */ 173 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER }, 174 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE }, 175 176 /* CSR BlueCore Bluetooth Sniffer */ 177 { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER }, 178 179 /* Frontline ComProbe Bluetooth Sniffer */ 180 { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER }, 181 182 { } /* Terminating entry */ 183 }; 184 185 #define BTUSB_MAX_ISOC_FRAMES 10 186 187 #define BTUSB_INTR_RUNNING 0 188 #define BTUSB_BULK_RUNNING 1 189 #define BTUSB_ISOC_RUNNING 2 190 #define BTUSB_SUSPENDING 3 191 #define BTUSB_DID_ISO_RESUME 4 192 193 struct btusb_data { 194 struct hci_dev *hdev; 195 struct usb_device *udev; 196 struct usb_interface *intf; 197 struct usb_interface *isoc; 198 199 spinlock_t lock; 200 201 unsigned long flags; 202 203 struct work_struct work; 204 struct work_struct waker; 205 206 struct usb_anchor tx_anchor; 207 struct usb_anchor intr_anchor; 208 struct usb_anchor bulk_anchor; 209 struct usb_anchor isoc_anchor; 210 struct usb_anchor deferred; 211 int tx_in_flight; 212 spinlock_t txlock; 213 214 struct usb_endpoint_descriptor *intr_ep; 215 struct usb_endpoint_descriptor *bulk_tx_ep; 216 struct usb_endpoint_descriptor *bulk_rx_ep; 217 struct usb_endpoint_descriptor *isoc_tx_ep; 218 struct usb_endpoint_descriptor *isoc_rx_ep; 219 220 __u8 cmdreq_type; 221 222 unsigned int sco_num; 223 int isoc_altsetting; 224 int suspend_count; 225 }; 226 227 static int inc_tx(struct btusb_data *data) 228 { 229 unsigned long flags; 230 int rv; 231 232 spin_lock_irqsave(&data->txlock, flags); 233 rv = test_bit(BTUSB_SUSPENDING, &data->flags); 234 if (!rv) 235 data->tx_in_flight++; 236 spin_unlock_irqrestore(&data->txlock, flags); 237 238 return rv; 239 } 240 241 static void btusb_intr_complete(struct urb *urb) 242 { 243 struct hci_dev *hdev = urb->context; 244 struct btusb_data *data = hdev->driver_data; 245 int err; 246 247 BT_DBG("%s urb %p status %d count %d", hdev->name, 248 urb, urb->status, urb->actual_length); 249 250 if (!test_bit(HCI_RUNNING, &hdev->flags)) 251 return; 252 253 if (urb->status == 0) { 254 hdev->stat.byte_rx += urb->actual_length; 255 256 if (hci_recv_fragment(hdev, HCI_EVENT_PKT, 257 urb->transfer_buffer, 258 urb->actual_length) < 0) { 259 BT_ERR("%s corrupted event packet", hdev->name); 260 hdev->stat.err_rx++; 261 } 262 } 263 264 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags)) 265 return; 266 267 usb_mark_last_busy(data->udev); 268 usb_anchor_urb(urb, &data->intr_anchor); 269 270 err = usb_submit_urb(urb, GFP_ATOMIC); 271 if (err < 0) { 272 /* -EPERM: urb is being killed; 273 * -ENODEV: device got disconnected */ 274 if (err != -EPERM && err != -ENODEV) 275 BT_ERR("%s urb %p failed to resubmit (%d)", 276 hdev->name, urb, -err); 277 usb_unanchor_urb(urb); 278 } 279 } 280 281 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags) 282 { 283 struct btusb_data *data = hdev->driver_data; 284 struct urb *urb; 285 unsigned char *buf; 286 unsigned int pipe; 287 int err, size; 288 289 BT_DBG("%s", hdev->name); 290 291 if (!data->intr_ep) 292 return -ENODEV; 293 294 urb = usb_alloc_urb(0, mem_flags); 295 if (!urb) 296 return -ENOMEM; 297 298 size = le16_to_cpu(data->intr_ep->wMaxPacketSize); 299 300 buf = kmalloc(size, mem_flags); 301 if (!buf) { 302 usb_free_urb(urb); 303 return -ENOMEM; 304 } 305 306 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress); 307 308 usb_fill_int_urb(urb, data->udev, pipe, buf, size, 309 btusb_intr_complete, hdev, 310 data->intr_ep->bInterval); 311 312 urb->transfer_flags |= URB_FREE_BUFFER; 313 314 usb_anchor_urb(urb, &data->intr_anchor); 315 316 err = usb_submit_urb(urb, mem_flags); 317 if (err < 0) { 318 BT_ERR("%s urb %p submission failed (%d)", 319 hdev->name, urb, -err); 320 usb_unanchor_urb(urb); 321 } 322 323 usb_free_urb(urb); 324 325 return err; 326 } 327 328 static void btusb_bulk_complete(struct urb *urb) 329 { 330 struct hci_dev *hdev = urb->context; 331 struct btusb_data *data = hdev->driver_data; 332 int err; 333 334 BT_DBG("%s urb %p status %d count %d", hdev->name, 335 urb, urb->status, urb->actual_length); 336 337 if (!test_bit(HCI_RUNNING, &hdev->flags)) 338 return; 339 340 if (urb->status == 0) { 341 hdev->stat.byte_rx += urb->actual_length; 342 343 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT, 344 urb->transfer_buffer, 345 urb->actual_length) < 0) { 346 BT_ERR("%s corrupted ACL packet", hdev->name); 347 hdev->stat.err_rx++; 348 } 349 } 350 351 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags)) 352 return; 353 354 usb_anchor_urb(urb, &data->bulk_anchor); 355 usb_mark_last_busy(data->udev); 356 357 err = usb_submit_urb(urb, GFP_ATOMIC); 358 if (err < 0) { 359 /* -EPERM: urb is being killed; 360 * -ENODEV: device got disconnected */ 361 if (err != -EPERM && err != -ENODEV) 362 BT_ERR("%s urb %p failed to resubmit (%d)", 363 hdev->name, urb, -err); 364 usb_unanchor_urb(urb); 365 } 366 } 367 368 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags) 369 { 370 struct btusb_data *data = hdev->driver_data; 371 struct urb *urb; 372 unsigned char *buf; 373 unsigned int pipe; 374 int err, size = HCI_MAX_FRAME_SIZE; 375 376 BT_DBG("%s", hdev->name); 377 378 if (!data->bulk_rx_ep) 379 return -ENODEV; 380 381 urb = usb_alloc_urb(0, mem_flags); 382 if (!urb) 383 return -ENOMEM; 384 385 buf = kmalloc(size, mem_flags); 386 if (!buf) { 387 usb_free_urb(urb); 388 return -ENOMEM; 389 } 390 391 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress); 392 393 usb_fill_bulk_urb(urb, data->udev, pipe, 394 buf, size, btusb_bulk_complete, hdev); 395 396 urb->transfer_flags |= URB_FREE_BUFFER; 397 398 usb_mark_last_busy(data->udev); 399 usb_anchor_urb(urb, &data->bulk_anchor); 400 401 err = usb_submit_urb(urb, mem_flags); 402 if (err < 0) { 403 BT_ERR("%s urb %p submission failed (%d)", 404 hdev->name, urb, -err); 405 usb_unanchor_urb(urb); 406 } 407 408 usb_free_urb(urb); 409 410 return err; 411 } 412 413 static void btusb_isoc_complete(struct urb *urb) 414 { 415 struct hci_dev *hdev = urb->context; 416 struct btusb_data *data = hdev->driver_data; 417 int i, err; 418 419 BT_DBG("%s urb %p status %d count %d", hdev->name, 420 urb, urb->status, urb->actual_length); 421 422 if (!test_bit(HCI_RUNNING, &hdev->flags)) 423 return; 424 425 if (urb->status == 0) { 426 for (i = 0; i < urb->number_of_packets; i++) { 427 unsigned int offset = urb->iso_frame_desc[i].offset; 428 unsigned int length = urb->iso_frame_desc[i].actual_length; 429 430 if (urb->iso_frame_desc[i].status) 431 continue; 432 433 hdev->stat.byte_rx += length; 434 435 if (hci_recv_fragment(hdev, HCI_SCODATA_PKT, 436 urb->transfer_buffer + offset, 437 length) < 0) { 438 BT_ERR("%s corrupted SCO packet", hdev->name); 439 hdev->stat.err_rx++; 440 } 441 } 442 } 443 444 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags)) 445 return; 446 447 usb_anchor_urb(urb, &data->isoc_anchor); 448 449 err = usb_submit_urb(urb, GFP_ATOMIC); 450 if (err < 0) { 451 /* -EPERM: urb is being killed; 452 * -ENODEV: device got disconnected */ 453 if (err != -EPERM && err != -ENODEV) 454 BT_ERR("%s urb %p failed to resubmit (%d)", 455 hdev->name, urb, -err); 456 usb_unanchor_urb(urb); 457 } 458 } 459 460 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu) 461 { 462 int i, offset = 0; 463 464 BT_DBG("len %d mtu %d", len, mtu); 465 466 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu; 467 i++, offset += mtu, len -= mtu) { 468 urb->iso_frame_desc[i].offset = offset; 469 urb->iso_frame_desc[i].length = mtu; 470 } 471 472 if (len && i < BTUSB_MAX_ISOC_FRAMES) { 473 urb->iso_frame_desc[i].offset = offset; 474 urb->iso_frame_desc[i].length = len; 475 i++; 476 } 477 478 urb->number_of_packets = i; 479 } 480 481 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags) 482 { 483 struct btusb_data *data = hdev->driver_data; 484 struct urb *urb; 485 unsigned char *buf; 486 unsigned int pipe; 487 int err, size; 488 489 BT_DBG("%s", hdev->name); 490 491 if (!data->isoc_rx_ep) 492 return -ENODEV; 493 494 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags); 495 if (!urb) 496 return -ENOMEM; 497 498 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) * 499 BTUSB_MAX_ISOC_FRAMES; 500 501 buf = kmalloc(size, mem_flags); 502 if (!buf) { 503 usb_free_urb(urb); 504 return -ENOMEM; 505 } 506 507 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress); 508 509 urb->dev = data->udev; 510 urb->pipe = pipe; 511 urb->context = hdev; 512 urb->complete = btusb_isoc_complete; 513 urb->interval = data->isoc_rx_ep->bInterval; 514 515 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP; 516 urb->transfer_buffer = buf; 517 urb->transfer_buffer_length = size; 518 519 __fill_isoc_descriptor(urb, size, 520 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize)); 521 522 usb_anchor_urb(urb, &data->isoc_anchor); 523 524 err = usb_submit_urb(urb, mem_flags); 525 if (err < 0) { 526 BT_ERR("%s urb %p submission failed (%d)", 527 hdev->name, urb, -err); 528 usb_unanchor_urb(urb); 529 } 530 531 usb_free_urb(urb); 532 533 return err; 534 } 535 536 static void btusb_tx_complete(struct urb *urb) 537 { 538 struct sk_buff *skb = urb->context; 539 struct hci_dev *hdev = (struct hci_dev *) skb->dev; 540 struct btusb_data *data = hdev->driver_data; 541 542 BT_DBG("%s urb %p status %d count %d", hdev->name, 543 urb, urb->status, urb->actual_length); 544 545 if (!test_bit(HCI_RUNNING, &hdev->flags)) 546 goto done; 547 548 if (!urb->status) 549 hdev->stat.byte_tx += urb->transfer_buffer_length; 550 else 551 hdev->stat.err_tx++; 552 553 done: 554 spin_lock(&data->txlock); 555 data->tx_in_flight--; 556 spin_unlock(&data->txlock); 557 558 kfree(urb->setup_packet); 559 560 kfree_skb(skb); 561 } 562 563 static void btusb_isoc_tx_complete(struct urb *urb) 564 { 565 struct sk_buff *skb = urb->context; 566 struct hci_dev *hdev = (struct hci_dev *) skb->dev; 567 568 BT_DBG("%s urb %p status %d count %d", hdev->name, 569 urb, urb->status, urb->actual_length); 570 571 if (!test_bit(HCI_RUNNING, &hdev->flags)) 572 goto done; 573 574 if (!urb->status) 575 hdev->stat.byte_tx += urb->transfer_buffer_length; 576 else 577 hdev->stat.err_tx++; 578 579 done: 580 kfree(urb->setup_packet); 581 582 kfree_skb(skb); 583 } 584 585 static int btusb_open(struct hci_dev *hdev) 586 { 587 struct btusb_data *data = hdev->driver_data; 588 int err; 589 590 BT_DBG("%s", hdev->name); 591 592 err = usb_autopm_get_interface(data->intf); 593 if (err < 0) 594 return err; 595 596 data->intf->needs_remote_wakeup = 1; 597 598 if (test_and_set_bit(HCI_RUNNING, &hdev->flags)) 599 goto done; 600 601 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags)) 602 goto done; 603 604 err = btusb_submit_intr_urb(hdev, GFP_KERNEL); 605 if (err < 0) 606 goto failed; 607 608 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL); 609 if (err < 0) { 610 usb_kill_anchored_urbs(&data->intr_anchor); 611 goto failed; 612 } 613 614 set_bit(BTUSB_BULK_RUNNING, &data->flags); 615 btusb_submit_bulk_urb(hdev, GFP_KERNEL); 616 617 done: 618 usb_autopm_put_interface(data->intf); 619 return 0; 620 621 failed: 622 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 623 clear_bit(HCI_RUNNING, &hdev->flags); 624 usb_autopm_put_interface(data->intf); 625 return err; 626 } 627 628 static void btusb_stop_traffic(struct btusb_data *data) 629 { 630 usb_kill_anchored_urbs(&data->intr_anchor); 631 usb_kill_anchored_urbs(&data->bulk_anchor); 632 usb_kill_anchored_urbs(&data->isoc_anchor); 633 } 634 635 static int btusb_close(struct hci_dev *hdev) 636 { 637 struct btusb_data *data = hdev->driver_data; 638 int err; 639 640 BT_DBG("%s", hdev->name); 641 642 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags)) 643 return 0; 644 645 cancel_work_sync(&data->work); 646 cancel_work_sync(&data->waker); 647 648 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 649 clear_bit(BTUSB_BULK_RUNNING, &data->flags); 650 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 651 652 btusb_stop_traffic(data); 653 err = usb_autopm_get_interface(data->intf); 654 if (err < 0) 655 goto failed; 656 657 data->intf->needs_remote_wakeup = 0; 658 usb_autopm_put_interface(data->intf); 659 660 failed: 661 usb_scuttle_anchored_urbs(&data->deferred); 662 return 0; 663 } 664 665 static int btusb_flush(struct hci_dev *hdev) 666 { 667 struct btusb_data *data = hdev->driver_data; 668 669 BT_DBG("%s", hdev->name); 670 671 usb_kill_anchored_urbs(&data->tx_anchor); 672 673 return 0; 674 } 675 676 static int btusb_send_frame(struct sk_buff *skb) 677 { 678 struct hci_dev *hdev = (struct hci_dev *) skb->dev; 679 struct btusb_data *data = hdev->driver_data; 680 struct usb_ctrlrequest *dr; 681 struct urb *urb; 682 unsigned int pipe; 683 int err; 684 685 BT_DBG("%s", hdev->name); 686 687 if (!test_bit(HCI_RUNNING, &hdev->flags)) 688 return -EBUSY; 689 690 switch (bt_cb(skb)->pkt_type) { 691 case HCI_COMMAND_PKT: 692 urb = usb_alloc_urb(0, GFP_ATOMIC); 693 if (!urb) 694 return -ENOMEM; 695 696 dr = kmalloc(sizeof(*dr), GFP_ATOMIC); 697 if (!dr) { 698 usb_free_urb(urb); 699 return -ENOMEM; 700 } 701 702 dr->bRequestType = data->cmdreq_type; 703 dr->bRequest = 0; 704 dr->wIndex = 0; 705 dr->wValue = 0; 706 dr->wLength = __cpu_to_le16(skb->len); 707 708 pipe = usb_sndctrlpipe(data->udev, 0x00); 709 710 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr, 711 skb->data, skb->len, btusb_tx_complete, skb); 712 713 hdev->stat.cmd_tx++; 714 break; 715 716 case HCI_ACLDATA_PKT: 717 if (!data->bulk_tx_ep) 718 return -ENODEV; 719 720 urb = usb_alloc_urb(0, GFP_ATOMIC); 721 if (!urb) 722 return -ENOMEM; 723 724 pipe = usb_sndbulkpipe(data->udev, 725 data->bulk_tx_ep->bEndpointAddress); 726 727 usb_fill_bulk_urb(urb, data->udev, pipe, 728 skb->data, skb->len, btusb_tx_complete, skb); 729 730 hdev->stat.acl_tx++; 731 break; 732 733 case HCI_SCODATA_PKT: 734 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1) 735 return -ENODEV; 736 737 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC); 738 if (!urb) 739 return -ENOMEM; 740 741 pipe = usb_sndisocpipe(data->udev, 742 data->isoc_tx_ep->bEndpointAddress); 743 744 usb_fill_int_urb(urb, data->udev, pipe, 745 skb->data, skb->len, btusb_isoc_tx_complete, 746 skb, data->isoc_tx_ep->bInterval); 747 748 urb->transfer_flags = URB_ISO_ASAP; 749 750 __fill_isoc_descriptor(urb, skb->len, 751 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize)); 752 753 hdev->stat.sco_tx++; 754 goto skip_waking; 755 756 default: 757 return -EILSEQ; 758 } 759 760 err = inc_tx(data); 761 if (err) { 762 usb_anchor_urb(urb, &data->deferred); 763 schedule_work(&data->waker); 764 err = 0; 765 goto done; 766 } 767 768 skip_waking: 769 usb_anchor_urb(urb, &data->tx_anchor); 770 771 err = usb_submit_urb(urb, GFP_ATOMIC); 772 if (err < 0) { 773 BT_ERR("%s urb %p submission failed", hdev->name, urb); 774 kfree(urb->setup_packet); 775 usb_unanchor_urb(urb); 776 } else { 777 usb_mark_last_busy(data->udev); 778 } 779 780 done: 781 usb_free_urb(urb); 782 return err; 783 } 784 785 static void btusb_destruct(struct hci_dev *hdev) 786 { 787 struct btusb_data *data = hdev->driver_data; 788 789 BT_DBG("%s", hdev->name); 790 791 kfree(data); 792 } 793 794 static void btusb_notify(struct hci_dev *hdev, unsigned int evt) 795 { 796 struct btusb_data *data = hdev->driver_data; 797 798 BT_DBG("%s evt %d", hdev->name, evt); 799 800 if (hdev->conn_hash.sco_num != data->sco_num) { 801 data->sco_num = hdev->conn_hash.sco_num; 802 schedule_work(&data->work); 803 } 804 } 805 806 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting) 807 { 808 struct btusb_data *data = hdev->driver_data; 809 struct usb_interface *intf = data->isoc; 810 struct usb_endpoint_descriptor *ep_desc; 811 int i, err; 812 813 if (!data->isoc) 814 return -ENODEV; 815 816 err = usb_set_interface(data->udev, 1, altsetting); 817 if (err < 0) { 818 BT_ERR("%s setting interface failed (%d)", hdev->name, -err); 819 return err; 820 } 821 822 data->isoc_altsetting = altsetting; 823 824 data->isoc_tx_ep = NULL; 825 data->isoc_rx_ep = NULL; 826 827 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { 828 ep_desc = &intf->cur_altsetting->endpoint[i].desc; 829 830 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) { 831 data->isoc_tx_ep = ep_desc; 832 continue; 833 } 834 835 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) { 836 data->isoc_rx_ep = ep_desc; 837 continue; 838 } 839 } 840 841 if (!data->isoc_tx_ep || !data->isoc_rx_ep) { 842 BT_ERR("%s invalid SCO descriptors", hdev->name); 843 return -ENODEV; 844 } 845 846 return 0; 847 } 848 849 static void btusb_work(struct work_struct *work) 850 { 851 struct btusb_data *data = container_of(work, struct btusb_data, work); 852 struct hci_dev *hdev = data->hdev; 853 int err; 854 855 if (hdev->conn_hash.sco_num > 0) { 856 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) { 857 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf); 858 if (err < 0) { 859 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 860 usb_kill_anchored_urbs(&data->isoc_anchor); 861 return; 862 } 863 864 set_bit(BTUSB_DID_ISO_RESUME, &data->flags); 865 } 866 if (data->isoc_altsetting != 2) { 867 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 868 usb_kill_anchored_urbs(&data->isoc_anchor); 869 870 if (__set_isoc_interface(hdev, 2) < 0) 871 return; 872 } 873 874 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) { 875 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0) 876 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 877 else 878 btusb_submit_isoc_urb(hdev, GFP_KERNEL); 879 } 880 } else { 881 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 882 usb_kill_anchored_urbs(&data->isoc_anchor); 883 884 __set_isoc_interface(hdev, 0); 885 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags)) 886 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf); 887 } 888 } 889 890 static void btusb_waker(struct work_struct *work) 891 { 892 struct btusb_data *data = container_of(work, struct btusb_data, waker); 893 int err; 894 895 err = usb_autopm_get_interface(data->intf); 896 if (err < 0) 897 return; 898 899 usb_autopm_put_interface(data->intf); 900 } 901 902 static int btusb_probe(struct usb_interface *intf, 903 const struct usb_device_id *id) 904 { 905 struct usb_endpoint_descriptor *ep_desc; 906 struct btusb_data *data; 907 struct hci_dev *hdev; 908 int i, err; 909 910 BT_DBG("intf %p id %p", intf, id); 911 912 /* interface numbers are hardcoded in the spec */ 913 if (intf->cur_altsetting->desc.bInterfaceNumber != 0) 914 return -ENODEV; 915 916 if (!id->driver_info) { 917 const struct usb_device_id *match; 918 match = usb_match_id(intf, blacklist_table); 919 if (match) 920 id = match; 921 } 922 923 if (id->driver_info == BTUSB_IGNORE) 924 return -ENODEV; 925 926 if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER) 927 return -ENODEV; 928 929 if (ignore_csr && id->driver_info & BTUSB_CSR) 930 return -ENODEV; 931 932 if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER) 933 return -ENODEV; 934 935 if (id->driver_info & BTUSB_ATH3012) { 936 struct usb_device *udev = interface_to_usbdev(intf); 937 938 /* Old firmware would otherwise let ath3k driver load 939 * patch and sysconfig files */ 940 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001) 941 return -ENODEV; 942 } 943 944 data = kzalloc(sizeof(*data), GFP_KERNEL); 945 if (!data) 946 return -ENOMEM; 947 948 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { 949 ep_desc = &intf->cur_altsetting->endpoint[i].desc; 950 951 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) { 952 data->intr_ep = ep_desc; 953 continue; 954 } 955 956 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) { 957 data->bulk_tx_ep = ep_desc; 958 continue; 959 } 960 961 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) { 962 data->bulk_rx_ep = ep_desc; 963 continue; 964 } 965 } 966 967 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) { 968 kfree(data); 969 return -ENODEV; 970 } 971 972 data->cmdreq_type = USB_TYPE_CLASS; 973 974 data->udev = interface_to_usbdev(intf); 975 data->intf = intf; 976 977 spin_lock_init(&data->lock); 978 979 INIT_WORK(&data->work, btusb_work); 980 INIT_WORK(&data->waker, btusb_waker); 981 spin_lock_init(&data->txlock); 982 983 init_usb_anchor(&data->tx_anchor); 984 init_usb_anchor(&data->intr_anchor); 985 init_usb_anchor(&data->bulk_anchor); 986 init_usb_anchor(&data->isoc_anchor); 987 init_usb_anchor(&data->deferred); 988 989 hdev = hci_alloc_dev(); 990 if (!hdev) { 991 kfree(data); 992 return -ENOMEM; 993 } 994 995 hdev->bus = HCI_USB; 996 hdev->driver_data = data; 997 998 data->hdev = hdev; 999 1000 SET_HCIDEV_DEV(hdev, &intf->dev); 1001 1002 hdev->open = btusb_open; 1003 hdev->close = btusb_close; 1004 hdev->flush = btusb_flush; 1005 hdev->send = btusb_send_frame; 1006 hdev->destruct = btusb_destruct; 1007 hdev->notify = btusb_notify; 1008 1009 hdev->owner = THIS_MODULE; 1010 1011 /* Interface numbers are hardcoded in the specification */ 1012 data->isoc = usb_ifnum_to_if(data->udev, 1); 1013 1014 if (!reset) 1015 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks); 1016 1017 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) { 1018 if (!disable_scofix) 1019 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks); 1020 } 1021 1022 if (id->driver_info & BTUSB_BROKEN_ISOC) 1023 data->isoc = NULL; 1024 1025 if (id->driver_info & BTUSB_DIGIANSWER) { 1026 data->cmdreq_type = USB_TYPE_VENDOR; 1027 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks); 1028 } 1029 1030 if (id->driver_info & BTUSB_CSR) { 1031 struct usb_device *udev = data->udev; 1032 1033 /* Old firmware would otherwise execute USB reset */ 1034 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117) 1035 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks); 1036 } 1037 1038 if (id->driver_info & BTUSB_SNIFFER) { 1039 struct usb_device *udev = data->udev; 1040 1041 /* New sniffer firmware has crippled HCI interface */ 1042 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997) 1043 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks); 1044 1045 data->isoc = NULL; 1046 } 1047 1048 if (id->driver_info & BTUSB_BCM92035) { 1049 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 }; 1050 struct sk_buff *skb; 1051 1052 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL); 1053 if (skb) { 1054 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd)); 1055 skb_queue_tail(&hdev->driver_init, skb); 1056 } 1057 } 1058 1059 if (data->isoc) { 1060 err = usb_driver_claim_interface(&btusb_driver, 1061 data->isoc, data); 1062 if (err < 0) { 1063 hci_free_dev(hdev); 1064 kfree(data); 1065 return err; 1066 } 1067 } 1068 1069 err = hci_register_dev(hdev); 1070 if (err < 0) { 1071 hci_free_dev(hdev); 1072 kfree(data); 1073 return err; 1074 } 1075 1076 usb_set_intfdata(intf, data); 1077 1078 return 0; 1079 } 1080 1081 static void btusb_disconnect(struct usb_interface *intf) 1082 { 1083 struct btusb_data *data = usb_get_intfdata(intf); 1084 struct hci_dev *hdev; 1085 1086 BT_DBG("intf %p", intf); 1087 1088 if (!data) 1089 return; 1090 1091 hdev = data->hdev; 1092 1093 __hci_dev_hold(hdev); 1094 1095 usb_set_intfdata(data->intf, NULL); 1096 1097 if (data->isoc) 1098 usb_set_intfdata(data->isoc, NULL); 1099 1100 hci_unregister_dev(hdev); 1101 1102 if (intf == data->isoc) 1103 usb_driver_release_interface(&btusb_driver, data->intf); 1104 else if (data->isoc) 1105 usb_driver_release_interface(&btusb_driver, data->isoc); 1106 1107 __hci_dev_put(hdev); 1108 1109 hci_free_dev(hdev); 1110 } 1111 1112 #ifdef CONFIG_PM 1113 static int btusb_suspend(struct usb_interface *intf, pm_message_t message) 1114 { 1115 struct btusb_data *data = usb_get_intfdata(intf); 1116 1117 BT_DBG("intf %p", intf); 1118 1119 if (data->suspend_count++) 1120 return 0; 1121 1122 spin_lock_irq(&data->txlock); 1123 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) { 1124 set_bit(BTUSB_SUSPENDING, &data->flags); 1125 spin_unlock_irq(&data->txlock); 1126 } else { 1127 spin_unlock_irq(&data->txlock); 1128 data->suspend_count--; 1129 return -EBUSY; 1130 } 1131 1132 cancel_work_sync(&data->work); 1133 1134 btusb_stop_traffic(data); 1135 usb_kill_anchored_urbs(&data->tx_anchor); 1136 1137 return 0; 1138 } 1139 1140 static void play_deferred(struct btusb_data *data) 1141 { 1142 struct urb *urb; 1143 int err; 1144 1145 while ((urb = usb_get_from_anchor(&data->deferred))) { 1146 err = usb_submit_urb(urb, GFP_ATOMIC); 1147 if (err < 0) 1148 break; 1149 1150 data->tx_in_flight++; 1151 } 1152 usb_scuttle_anchored_urbs(&data->deferred); 1153 } 1154 1155 static int btusb_resume(struct usb_interface *intf) 1156 { 1157 struct btusb_data *data = usb_get_intfdata(intf); 1158 struct hci_dev *hdev = data->hdev; 1159 int err = 0; 1160 1161 BT_DBG("intf %p", intf); 1162 1163 if (--data->suspend_count) 1164 return 0; 1165 1166 if (!test_bit(HCI_RUNNING, &hdev->flags)) 1167 goto done; 1168 1169 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) { 1170 err = btusb_submit_intr_urb(hdev, GFP_NOIO); 1171 if (err < 0) { 1172 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 1173 goto failed; 1174 } 1175 } 1176 1177 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) { 1178 err = btusb_submit_bulk_urb(hdev, GFP_NOIO); 1179 if (err < 0) { 1180 clear_bit(BTUSB_BULK_RUNNING, &data->flags); 1181 goto failed; 1182 } 1183 1184 btusb_submit_bulk_urb(hdev, GFP_NOIO); 1185 } 1186 1187 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) { 1188 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0) 1189 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1190 else 1191 btusb_submit_isoc_urb(hdev, GFP_NOIO); 1192 } 1193 1194 spin_lock_irq(&data->txlock); 1195 play_deferred(data); 1196 clear_bit(BTUSB_SUSPENDING, &data->flags); 1197 spin_unlock_irq(&data->txlock); 1198 schedule_work(&data->work); 1199 1200 return 0; 1201 1202 failed: 1203 usb_scuttle_anchored_urbs(&data->deferred); 1204 done: 1205 spin_lock_irq(&data->txlock); 1206 clear_bit(BTUSB_SUSPENDING, &data->flags); 1207 spin_unlock_irq(&data->txlock); 1208 1209 return err; 1210 } 1211 #endif 1212 1213 static struct usb_driver btusb_driver = { 1214 .name = "btusb", 1215 .probe = btusb_probe, 1216 .disconnect = btusb_disconnect, 1217 #ifdef CONFIG_PM 1218 .suspend = btusb_suspend, 1219 .resume = btusb_resume, 1220 #endif 1221 .id_table = btusb_table, 1222 .supports_autosuspend = 1, 1223 }; 1224 1225 static int __init btusb_init(void) 1226 { 1227 BT_INFO("Generic Bluetooth USB driver ver %s", VERSION); 1228 1229 return usb_register(&btusb_driver); 1230 } 1231 1232 static void __exit btusb_exit(void) 1233 { 1234 usb_deregister(&btusb_driver); 1235 } 1236 1237 module_init(btusb_init); 1238 module_exit(btusb_exit); 1239 1240 module_param(ignore_dga, bool, 0644); 1241 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001"); 1242 1243 module_param(ignore_csr, bool, 0644); 1244 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001"); 1245 1246 module_param(ignore_sniffer, bool, 0644); 1247 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002"); 1248 1249 module_param(disable_scofix, bool, 0644); 1250 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size"); 1251 1252 module_param(force_scofix, bool, 0644); 1253 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size"); 1254 1255 module_param(reset, bool, 0644); 1256 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization"); 1257 1258 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); 1259 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION); 1260 MODULE_VERSION(VERSION); 1261 MODULE_LICENSE("GPL"); 1262