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 if (err != -EPERM && err != -ENODEV) 319 BT_ERR("%s urb %p submission failed (%d)", 320 hdev->name, urb, -err); 321 usb_unanchor_urb(urb); 322 } 323 324 usb_free_urb(urb); 325 326 return err; 327 } 328 329 static void btusb_bulk_complete(struct urb *urb) 330 { 331 struct hci_dev *hdev = urb->context; 332 struct btusb_data *data = hdev->driver_data; 333 int err; 334 335 BT_DBG("%s urb %p status %d count %d", hdev->name, 336 urb, urb->status, urb->actual_length); 337 338 if (!test_bit(HCI_RUNNING, &hdev->flags)) 339 return; 340 341 if (urb->status == 0) { 342 hdev->stat.byte_rx += urb->actual_length; 343 344 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT, 345 urb->transfer_buffer, 346 urb->actual_length) < 0) { 347 BT_ERR("%s corrupted ACL packet", hdev->name); 348 hdev->stat.err_rx++; 349 } 350 } 351 352 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags)) 353 return; 354 355 usb_anchor_urb(urb, &data->bulk_anchor); 356 usb_mark_last_busy(data->udev); 357 358 err = usb_submit_urb(urb, GFP_ATOMIC); 359 if (err < 0) { 360 /* -EPERM: urb is being killed; 361 * -ENODEV: device got disconnected */ 362 if (err != -EPERM && err != -ENODEV) 363 BT_ERR("%s urb %p failed to resubmit (%d)", 364 hdev->name, urb, -err); 365 usb_unanchor_urb(urb); 366 } 367 } 368 369 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags) 370 { 371 struct btusb_data *data = hdev->driver_data; 372 struct urb *urb; 373 unsigned char *buf; 374 unsigned int pipe; 375 int err, size = HCI_MAX_FRAME_SIZE; 376 377 BT_DBG("%s", hdev->name); 378 379 if (!data->bulk_rx_ep) 380 return -ENODEV; 381 382 urb = usb_alloc_urb(0, mem_flags); 383 if (!urb) 384 return -ENOMEM; 385 386 buf = kmalloc(size, mem_flags); 387 if (!buf) { 388 usb_free_urb(urb); 389 return -ENOMEM; 390 } 391 392 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress); 393 394 usb_fill_bulk_urb(urb, data->udev, pipe, 395 buf, size, btusb_bulk_complete, hdev); 396 397 urb->transfer_flags |= URB_FREE_BUFFER; 398 399 usb_mark_last_busy(data->udev); 400 usb_anchor_urb(urb, &data->bulk_anchor); 401 402 err = usb_submit_urb(urb, mem_flags); 403 if (err < 0) { 404 if (err != -EPERM && err != -ENODEV) 405 BT_ERR("%s urb %p submission failed (%d)", 406 hdev->name, urb, -err); 407 usb_unanchor_urb(urb); 408 } 409 410 usb_free_urb(urb); 411 412 return err; 413 } 414 415 static void btusb_isoc_complete(struct urb *urb) 416 { 417 struct hci_dev *hdev = urb->context; 418 struct btusb_data *data = hdev->driver_data; 419 int i, err; 420 421 BT_DBG("%s urb %p status %d count %d", hdev->name, 422 urb, urb->status, urb->actual_length); 423 424 if (!test_bit(HCI_RUNNING, &hdev->flags)) 425 return; 426 427 if (urb->status == 0) { 428 for (i = 0; i < urb->number_of_packets; i++) { 429 unsigned int offset = urb->iso_frame_desc[i].offset; 430 unsigned int length = urb->iso_frame_desc[i].actual_length; 431 432 if (urb->iso_frame_desc[i].status) 433 continue; 434 435 hdev->stat.byte_rx += length; 436 437 if (hci_recv_fragment(hdev, HCI_SCODATA_PKT, 438 urb->transfer_buffer + offset, 439 length) < 0) { 440 BT_ERR("%s corrupted SCO packet", hdev->name); 441 hdev->stat.err_rx++; 442 } 443 } 444 } 445 446 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags)) 447 return; 448 449 usb_anchor_urb(urb, &data->isoc_anchor); 450 451 err = usb_submit_urb(urb, GFP_ATOMIC); 452 if (err < 0) { 453 /* -EPERM: urb is being killed; 454 * -ENODEV: device got disconnected */ 455 if (err != -EPERM && err != -ENODEV) 456 BT_ERR("%s urb %p failed to resubmit (%d)", 457 hdev->name, urb, -err); 458 usb_unanchor_urb(urb); 459 } 460 } 461 462 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu) 463 { 464 int i, offset = 0; 465 466 BT_DBG("len %d mtu %d", len, mtu); 467 468 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu; 469 i++, offset += mtu, len -= mtu) { 470 urb->iso_frame_desc[i].offset = offset; 471 urb->iso_frame_desc[i].length = mtu; 472 } 473 474 if (len && i < BTUSB_MAX_ISOC_FRAMES) { 475 urb->iso_frame_desc[i].offset = offset; 476 urb->iso_frame_desc[i].length = len; 477 i++; 478 } 479 480 urb->number_of_packets = i; 481 } 482 483 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags) 484 { 485 struct btusb_data *data = hdev->driver_data; 486 struct urb *urb; 487 unsigned char *buf; 488 unsigned int pipe; 489 int err, size; 490 491 BT_DBG("%s", hdev->name); 492 493 if (!data->isoc_rx_ep) 494 return -ENODEV; 495 496 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags); 497 if (!urb) 498 return -ENOMEM; 499 500 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) * 501 BTUSB_MAX_ISOC_FRAMES; 502 503 buf = kmalloc(size, mem_flags); 504 if (!buf) { 505 usb_free_urb(urb); 506 return -ENOMEM; 507 } 508 509 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress); 510 511 urb->dev = data->udev; 512 urb->pipe = pipe; 513 urb->context = hdev; 514 urb->complete = btusb_isoc_complete; 515 urb->interval = data->isoc_rx_ep->bInterval; 516 517 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP; 518 urb->transfer_buffer = buf; 519 urb->transfer_buffer_length = size; 520 521 __fill_isoc_descriptor(urb, size, 522 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize)); 523 524 usb_anchor_urb(urb, &data->isoc_anchor); 525 526 err = usb_submit_urb(urb, mem_flags); 527 if (err < 0) { 528 if (err != -EPERM && err != -ENODEV) 529 BT_ERR("%s urb %p submission failed (%d)", 530 hdev->name, urb, -err); 531 usb_unanchor_urb(urb); 532 } 533 534 usb_free_urb(urb); 535 536 return err; 537 } 538 539 static void btusb_tx_complete(struct urb *urb) 540 { 541 struct sk_buff *skb = urb->context; 542 struct hci_dev *hdev = (struct hci_dev *) skb->dev; 543 struct btusb_data *data = hdev->driver_data; 544 545 BT_DBG("%s urb %p status %d count %d", hdev->name, 546 urb, urb->status, urb->actual_length); 547 548 if (!test_bit(HCI_RUNNING, &hdev->flags)) 549 goto done; 550 551 if (!urb->status) 552 hdev->stat.byte_tx += urb->transfer_buffer_length; 553 else 554 hdev->stat.err_tx++; 555 556 done: 557 spin_lock(&data->txlock); 558 data->tx_in_flight--; 559 spin_unlock(&data->txlock); 560 561 kfree(urb->setup_packet); 562 563 kfree_skb(skb); 564 } 565 566 static void btusb_isoc_tx_complete(struct urb *urb) 567 { 568 struct sk_buff *skb = urb->context; 569 struct hci_dev *hdev = (struct hci_dev *) skb->dev; 570 571 BT_DBG("%s urb %p status %d count %d", hdev->name, 572 urb, urb->status, urb->actual_length); 573 574 if (!test_bit(HCI_RUNNING, &hdev->flags)) 575 goto done; 576 577 if (!urb->status) 578 hdev->stat.byte_tx += urb->transfer_buffer_length; 579 else 580 hdev->stat.err_tx++; 581 582 done: 583 kfree(urb->setup_packet); 584 585 kfree_skb(skb); 586 } 587 588 static int btusb_open(struct hci_dev *hdev) 589 { 590 struct btusb_data *data = hdev->driver_data; 591 int err; 592 593 BT_DBG("%s", hdev->name); 594 595 err = usb_autopm_get_interface(data->intf); 596 if (err < 0) 597 return err; 598 599 data->intf->needs_remote_wakeup = 1; 600 601 if (test_and_set_bit(HCI_RUNNING, &hdev->flags)) 602 goto done; 603 604 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags)) 605 goto done; 606 607 err = btusb_submit_intr_urb(hdev, GFP_KERNEL); 608 if (err < 0) 609 goto failed; 610 611 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL); 612 if (err < 0) { 613 usb_kill_anchored_urbs(&data->intr_anchor); 614 goto failed; 615 } 616 617 set_bit(BTUSB_BULK_RUNNING, &data->flags); 618 btusb_submit_bulk_urb(hdev, GFP_KERNEL); 619 620 done: 621 usb_autopm_put_interface(data->intf); 622 return 0; 623 624 failed: 625 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 626 clear_bit(HCI_RUNNING, &hdev->flags); 627 usb_autopm_put_interface(data->intf); 628 return err; 629 } 630 631 static void btusb_stop_traffic(struct btusb_data *data) 632 { 633 usb_kill_anchored_urbs(&data->intr_anchor); 634 usb_kill_anchored_urbs(&data->bulk_anchor); 635 usb_kill_anchored_urbs(&data->isoc_anchor); 636 } 637 638 static int btusb_close(struct hci_dev *hdev) 639 { 640 struct btusb_data *data = hdev->driver_data; 641 int err; 642 643 BT_DBG("%s", hdev->name); 644 645 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags)) 646 return 0; 647 648 cancel_work_sync(&data->work); 649 cancel_work_sync(&data->waker); 650 651 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 652 clear_bit(BTUSB_BULK_RUNNING, &data->flags); 653 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 654 655 btusb_stop_traffic(data); 656 err = usb_autopm_get_interface(data->intf); 657 if (err < 0) 658 goto failed; 659 660 data->intf->needs_remote_wakeup = 0; 661 usb_autopm_put_interface(data->intf); 662 663 failed: 664 usb_scuttle_anchored_urbs(&data->deferred); 665 return 0; 666 } 667 668 static int btusb_flush(struct hci_dev *hdev) 669 { 670 struct btusb_data *data = hdev->driver_data; 671 672 BT_DBG("%s", hdev->name); 673 674 usb_kill_anchored_urbs(&data->tx_anchor); 675 676 return 0; 677 } 678 679 static int btusb_send_frame(struct sk_buff *skb) 680 { 681 struct hci_dev *hdev = (struct hci_dev *) skb->dev; 682 struct btusb_data *data = hdev->driver_data; 683 struct usb_ctrlrequest *dr; 684 struct urb *urb; 685 unsigned int pipe; 686 int err; 687 688 BT_DBG("%s", hdev->name); 689 690 if (!test_bit(HCI_RUNNING, &hdev->flags)) 691 return -EBUSY; 692 693 switch (bt_cb(skb)->pkt_type) { 694 case HCI_COMMAND_PKT: 695 urb = usb_alloc_urb(0, GFP_ATOMIC); 696 if (!urb) 697 return -ENOMEM; 698 699 dr = kmalloc(sizeof(*dr), GFP_ATOMIC); 700 if (!dr) { 701 usb_free_urb(urb); 702 return -ENOMEM; 703 } 704 705 dr->bRequestType = data->cmdreq_type; 706 dr->bRequest = 0; 707 dr->wIndex = 0; 708 dr->wValue = 0; 709 dr->wLength = __cpu_to_le16(skb->len); 710 711 pipe = usb_sndctrlpipe(data->udev, 0x00); 712 713 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr, 714 skb->data, skb->len, btusb_tx_complete, skb); 715 716 hdev->stat.cmd_tx++; 717 break; 718 719 case HCI_ACLDATA_PKT: 720 if (!data->bulk_tx_ep) 721 return -ENODEV; 722 723 urb = usb_alloc_urb(0, GFP_ATOMIC); 724 if (!urb) 725 return -ENOMEM; 726 727 pipe = usb_sndbulkpipe(data->udev, 728 data->bulk_tx_ep->bEndpointAddress); 729 730 usb_fill_bulk_urb(urb, data->udev, pipe, 731 skb->data, skb->len, btusb_tx_complete, skb); 732 733 if (skb->priority >= HCI_PRIO_MAX - 1) 734 urb->transfer_flags = URB_ISO_ASAP; 735 736 hdev->stat.acl_tx++; 737 break; 738 739 case HCI_SCODATA_PKT: 740 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1) 741 return -ENODEV; 742 743 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC); 744 if (!urb) 745 return -ENOMEM; 746 747 pipe = usb_sndisocpipe(data->udev, 748 data->isoc_tx_ep->bEndpointAddress); 749 750 usb_fill_int_urb(urb, data->udev, pipe, 751 skb->data, skb->len, btusb_isoc_tx_complete, 752 skb, data->isoc_tx_ep->bInterval); 753 754 urb->transfer_flags = URB_ISO_ASAP; 755 756 __fill_isoc_descriptor(urb, skb->len, 757 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize)); 758 759 hdev->stat.sco_tx++; 760 goto skip_waking; 761 762 default: 763 return -EILSEQ; 764 } 765 766 err = inc_tx(data); 767 if (err) { 768 usb_anchor_urb(urb, &data->deferred); 769 schedule_work(&data->waker); 770 err = 0; 771 goto done; 772 } 773 774 skip_waking: 775 usb_anchor_urb(urb, &data->tx_anchor); 776 777 err = usb_submit_urb(urb, GFP_ATOMIC); 778 if (err < 0) { 779 if (err != -EPERM && err != -ENODEV) 780 BT_ERR("%s urb %p submission failed (%d)", 781 hdev->name, urb, -err); 782 kfree(urb->setup_packet); 783 usb_unanchor_urb(urb); 784 } else { 785 usb_mark_last_busy(data->udev); 786 } 787 788 done: 789 usb_free_urb(urb); 790 return err; 791 } 792 793 static void btusb_destruct(struct hci_dev *hdev) 794 { 795 struct btusb_data *data = hdev->driver_data; 796 797 BT_DBG("%s", hdev->name); 798 799 kfree(data); 800 } 801 802 static void btusb_notify(struct hci_dev *hdev, unsigned int evt) 803 { 804 struct btusb_data *data = hdev->driver_data; 805 806 BT_DBG("%s evt %d", hdev->name, evt); 807 808 if (hdev->conn_hash.sco_num != data->sco_num) { 809 data->sco_num = hdev->conn_hash.sco_num; 810 schedule_work(&data->work); 811 } 812 } 813 814 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting) 815 { 816 struct btusb_data *data = hdev->driver_data; 817 struct usb_interface *intf = data->isoc; 818 struct usb_endpoint_descriptor *ep_desc; 819 int i, err; 820 821 if (!data->isoc) 822 return -ENODEV; 823 824 err = usb_set_interface(data->udev, 1, altsetting); 825 if (err < 0) { 826 BT_ERR("%s setting interface failed (%d)", hdev->name, -err); 827 return err; 828 } 829 830 data->isoc_altsetting = altsetting; 831 832 data->isoc_tx_ep = NULL; 833 data->isoc_rx_ep = NULL; 834 835 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { 836 ep_desc = &intf->cur_altsetting->endpoint[i].desc; 837 838 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) { 839 data->isoc_tx_ep = ep_desc; 840 continue; 841 } 842 843 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) { 844 data->isoc_rx_ep = ep_desc; 845 continue; 846 } 847 } 848 849 if (!data->isoc_tx_ep || !data->isoc_rx_ep) { 850 BT_ERR("%s invalid SCO descriptors", hdev->name); 851 return -ENODEV; 852 } 853 854 return 0; 855 } 856 857 static void btusb_work(struct work_struct *work) 858 { 859 struct btusb_data *data = container_of(work, struct btusb_data, work); 860 struct hci_dev *hdev = data->hdev; 861 int err; 862 863 if (hdev->conn_hash.sco_num > 0) { 864 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) { 865 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf); 866 if (err < 0) { 867 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 868 usb_kill_anchored_urbs(&data->isoc_anchor); 869 return; 870 } 871 872 set_bit(BTUSB_DID_ISO_RESUME, &data->flags); 873 } 874 if (data->isoc_altsetting != 2) { 875 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 876 usb_kill_anchored_urbs(&data->isoc_anchor); 877 878 if (__set_isoc_interface(hdev, 2) < 0) 879 return; 880 } 881 882 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) { 883 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0) 884 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 885 else 886 btusb_submit_isoc_urb(hdev, GFP_KERNEL); 887 } 888 } else { 889 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 890 usb_kill_anchored_urbs(&data->isoc_anchor); 891 892 __set_isoc_interface(hdev, 0); 893 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags)) 894 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf); 895 } 896 } 897 898 static void btusb_waker(struct work_struct *work) 899 { 900 struct btusb_data *data = container_of(work, struct btusb_data, waker); 901 int err; 902 903 err = usb_autopm_get_interface(data->intf); 904 if (err < 0) 905 return; 906 907 usb_autopm_put_interface(data->intf); 908 } 909 910 static int btusb_probe(struct usb_interface *intf, 911 const struct usb_device_id *id) 912 { 913 struct usb_endpoint_descriptor *ep_desc; 914 struct btusb_data *data; 915 struct hci_dev *hdev; 916 int i, err; 917 918 BT_DBG("intf %p id %p", intf, id); 919 920 /* interface numbers are hardcoded in the spec */ 921 if (intf->cur_altsetting->desc.bInterfaceNumber != 0) 922 return -ENODEV; 923 924 if (!id->driver_info) { 925 const struct usb_device_id *match; 926 match = usb_match_id(intf, blacklist_table); 927 if (match) 928 id = match; 929 } 930 931 if (id->driver_info == BTUSB_IGNORE) 932 return -ENODEV; 933 934 if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER) 935 return -ENODEV; 936 937 if (ignore_csr && id->driver_info & BTUSB_CSR) 938 return -ENODEV; 939 940 if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER) 941 return -ENODEV; 942 943 if (id->driver_info & BTUSB_ATH3012) { 944 struct usb_device *udev = interface_to_usbdev(intf); 945 946 /* Old firmware would otherwise let ath3k driver load 947 * patch and sysconfig files */ 948 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001) 949 return -ENODEV; 950 } 951 952 data = kzalloc(sizeof(*data), GFP_KERNEL); 953 if (!data) 954 return -ENOMEM; 955 956 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { 957 ep_desc = &intf->cur_altsetting->endpoint[i].desc; 958 959 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) { 960 data->intr_ep = ep_desc; 961 continue; 962 } 963 964 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) { 965 data->bulk_tx_ep = ep_desc; 966 continue; 967 } 968 969 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) { 970 data->bulk_rx_ep = ep_desc; 971 continue; 972 } 973 } 974 975 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) { 976 kfree(data); 977 return -ENODEV; 978 } 979 980 data->cmdreq_type = USB_TYPE_CLASS; 981 982 data->udev = interface_to_usbdev(intf); 983 data->intf = intf; 984 985 spin_lock_init(&data->lock); 986 987 INIT_WORK(&data->work, btusb_work); 988 INIT_WORK(&data->waker, btusb_waker); 989 spin_lock_init(&data->txlock); 990 991 init_usb_anchor(&data->tx_anchor); 992 init_usb_anchor(&data->intr_anchor); 993 init_usb_anchor(&data->bulk_anchor); 994 init_usb_anchor(&data->isoc_anchor); 995 init_usb_anchor(&data->deferred); 996 997 hdev = hci_alloc_dev(); 998 if (!hdev) { 999 kfree(data); 1000 return -ENOMEM; 1001 } 1002 1003 hdev->bus = HCI_USB; 1004 hdev->driver_data = data; 1005 1006 data->hdev = hdev; 1007 1008 SET_HCIDEV_DEV(hdev, &intf->dev); 1009 1010 hdev->open = btusb_open; 1011 hdev->close = btusb_close; 1012 hdev->flush = btusb_flush; 1013 hdev->send = btusb_send_frame; 1014 hdev->destruct = btusb_destruct; 1015 hdev->notify = btusb_notify; 1016 1017 hdev->owner = THIS_MODULE; 1018 1019 /* Interface numbers are hardcoded in the specification */ 1020 data->isoc = usb_ifnum_to_if(data->udev, 1); 1021 1022 if (!reset) 1023 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks); 1024 1025 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) { 1026 if (!disable_scofix) 1027 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks); 1028 } 1029 1030 if (id->driver_info & BTUSB_BROKEN_ISOC) 1031 data->isoc = NULL; 1032 1033 if (id->driver_info & BTUSB_DIGIANSWER) { 1034 data->cmdreq_type = USB_TYPE_VENDOR; 1035 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks); 1036 } 1037 1038 if (id->driver_info & BTUSB_CSR) { 1039 struct usb_device *udev = data->udev; 1040 1041 /* Old firmware would otherwise execute USB reset */ 1042 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117) 1043 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks); 1044 } 1045 1046 if (id->driver_info & BTUSB_SNIFFER) { 1047 struct usb_device *udev = data->udev; 1048 1049 /* New sniffer firmware has crippled HCI interface */ 1050 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997) 1051 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks); 1052 1053 data->isoc = NULL; 1054 } 1055 1056 if (id->driver_info & BTUSB_BCM92035) { 1057 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 }; 1058 struct sk_buff *skb; 1059 1060 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL); 1061 if (skb) { 1062 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd)); 1063 skb_queue_tail(&hdev->driver_init, skb); 1064 } 1065 } 1066 1067 if (data->isoc) { 1068 err = usb_driver_claim_interface(&btusb_driver, 1069 data->isoc, data); 1070 if (err < 0) { 1071 hci_free_dev(hdev); 1072 kfree(data); 1073 return err; 1074 } 1075 } 1076 1077 err = hci_register_dev(hdev); 1078 if (err < 0) { 1079 hci_free_dev(hdev); 1080 kfree(data); 1081 return err; 1082 } 1083 1084 usb_set_intfdata(intf, data); 1085 1086 return 0; 1087 } 1088 1089 static void btusb_disconnect(struct usb_interface *intf) 1090 { 1091 struct btusb_data *data = usb_get_intfdata(intf); 1092 struct hci_dev *hdev; 1093 1094 BT_DBG("intf %p", intf); 1095 1096 if (!data) 1097 return; 1098 1099 hdev = data->hdev; 1100 1101 __hci_dev_hold(hdev); 1102 1103 usb_set_intfdata(data->intf, NULL); 1104 1105 if (data->isoc) 1106 usb_set_intfdata(data->isoc, NULL); 1107 1108 hci_unregister_dev(hdev); 1109 1110 if (intf == data->isoc) 1111 usb_driver_release_interface(&btusb_driver, data->intf); 1112 else if (data->isoc) 1113 usb_driver_release_interface(&btusb_driver, data->isoc); 1114 1115 __hci_dev_put(hdev); 1116 1117 hci_free_dev(hdev); 1118 } 1119 1120 #ifdef CONFIG_PM 1121 static int btusb_suspend(struct usb_interface *intf, pm_message_t message) 1122 { 1123 struct btusb_data *data = usb_get_intfdata(intf); 1124 1125 BT_DBG("intf %p", intf); 1126 1127 if (data->suspend_count++) 1128 return 0; 1129 1130 spin_lock_irq(&data->txlock); 1131 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) { 1132 set_bit(BTUSB_SUSPENDING, &data->flags); 1133 spin_unlock_irq(&data->txlock); 1134 } else { 1135 spin_unlock_irq(&data->txlock); 1136 data->suspend_count--; 1137 return -EBUSY; 1138 } 1139 1140 cancel_work_sync(&data->work); 1141 1142 btusb_stop_traffic(data); 1143 usb_kill_anchored_urbs(&data->tx_anchor); 1144 1145 return 0; 1146 } 1147 1148 static void play_deferred(struct btusb_data *data) 1149 { 1150 struct urb *urb; 1151 int err; 1152 1153 while ((urb = usb_get_from_anchor(&data->deferred))) { 1154 err = usb_submit_urb(urb, GFP_ATOMIC); 1155 if (err < 0) 1156 break; 1157 1158 data->tx_in_flight++; 1159 } 1160 usb_scuttle_anchored_urbs(&data->deferred); 1161 } 1162 1163 static int btusb_resume(struct usb_interface *intf) 1164 { 1165 struct btusb_data *data = usb_get_intfdata(intf); 1166 struct hci_dev *hdev = data->hdev; 1167 int err = 0; 1168 1169 BT_DBG("intf %p", intf); 1170 1171 if (--data->suspend_count) 1172 return 0; 1173 1174 if (!test_bit(HCI_RUNNING, &hdev->flags)) 1175 goto done; 1176 1177 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) { 1178 err = btusb_submit_intr_urb(hdev, GFP_NOIO); 1179 if (err < 0) { 1180 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 1181 goto failed; 1182 } 1183 } 1184 1185 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) { 1186 err = btusb_submit_bulk_urb(hdev, GFP_NOIO); 1187 if (err < 0) { 1188 clear_bit(BTUSB_BULK_RUNNING, &data->flags); 1189 goto failed; 1190 } 1191 1192 btusb_submit_bulk_urb(hdev, GFP_NOIO); 1193 } 1194 1195 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) { 1196 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0) 1197 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1198 else 1199 btusb_submit_isoc_urb(hdev, GFP_NOIO); 1200 } 1201 1202 spin_lock_irq(&data->txlock); 1203 play_deferred(data); 1204 clear_bit(BTUSB_SUSPENDING, &data->flags); 1205 spin_unlock_irq(&data->txlock); 1206 schedule_work(&data->work); 1207 1208 return 0; 1209 1210 failed: 1211 usb_scuttle_anchored_urbs(&data->deferred); 1212 done: 1213 spin_lock_irq(&data->txlock); 1214 clear_bit(BTUSB_SUSPENDING, &data->flags); 1215 spin_unlock_irq(&data->txlock); 1216 1217 return err; 1218 } 1219 #endif 1220 1221 static struct usb_driver btusb_driver = { 1222 .name = "btusb", 1223 .probe = btusb_probe, 1224 .disconnect = btusb_disconnect, 1225 #ifdef CONFIG_PM 1226 .suspend = btusb_suspend, 1227 .resume = btusb_resume, 1228 #endif 1229 .id_table = btusb_table, 1230 .supports_autosuspend = 1, 1231 }; 1232 1233 static int __init btusb_init(void) 1234 { 1235 BT_INFO("Generic Bluetooth USB driver ver %s", VERSION); 1236 1237 return usb_register(&btusb_driver); 1238 } 1239 1240 static void __exit btusb_exit(void) 1241 { 1242 usb_deregister(&btusb_driver); 1243 } 1244 1245 module_init(btusb_init); 1246 module_exit(btusb_exit); 1247 1248 module_param(ignore_dga, bool, 0644); 1249 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001"); 1250 1251 module_param(ignore_csr, bool, 0644); 1252 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001"); 1253 1254 module_param(ignore_sniffer, bool, 0644); 1255 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002"); 1256 1257 module_param(disable_scofix, bool, 0644); 1258 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size"); 1259 1260 module_param(force_scofix, bool, 0644); 1261 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size"); 1262 1263 module_param(reset, bool, 0644); 1264 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization"); 1265 1266 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); 1267 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION); 1268 MODULE_VERSION(VERSION); 1269 MODULE_LICENSE("GPL"); 1270