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