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