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