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 bool ignore_dga; 41 static bool ignore_csr; 42 static bool ignore_sniffer; 43 static bool disable_scofix; 44 static bool force_scofix; 45 46 static bool reset = 1; 47 48 static struct usb_driver btusb_driver; 49 50 #define BTUSB_IGNORE 0x01 51 #define BTUSB_DIGIANSWER 0x02 52 #define BTUSB_CSR 0x04 53 #define BTUSB_SNIFFER 0x08 54 #define BTUSB_BCM92035 0x10 55 #define BTUSB_BROKEN_ISOC 0x20 56 #define BTUSB_WRONG_SCO_MTU 0x40 57 #define BTUSB_ATH3012 0x80 58 59 static struct usb_device_id btusb_table[] = { 60 /* Generic Bluetooth USB device */ 61 { USB_DEVICE_INFO(0xe0, 0x01, 0x01) }, 62 63 /* Broadcom SoftSailing reporting vendor specific */ 64 { USB_DEVICE(0x05ac, 0x21e1) }, 65 66 /* Apple MacBookPro 7,1 */ 67 { USB_DEVICE(0x05ac, 0x8213) }, 68 69 /* Apple iMac11,1 */ 70 { USB_DEVICE(0x05ac, 0x8215) }, 71 72 /* Apple MacBookPro6,2 */ 73 { USB_DEVICE(0x05ac, 0x8218) }, 74 75 /* Apple MacBookAir3,1, MacBookAir3,2 */ 76 { USB_DEVICE(0x05ac, 0x821b) }, 77 78 /* Apple MacBookAir4,1 */ 79 { USB_DEVICE(0x05ac, 0x821f) }, 80 81 /* Apple MacBookPro8,2 */ 82 { USB_DEVICE(0x05ac, 0x821a) }, 83 84 /* Apple MacMini5,1 */ 85 { USB_DEVICE(0x05ac, 0x8281) }, 86 87 /* AVM BlueFRITZ! USB v2.0 */ 88 { USB_DEVICE(0x057c, 0x3800) }, 89 90 /* Bluetooth Ultraport Module from IBM */ 91 { USB_DEVICE(0x04bf, 0x030a) }, 92 93 /* ALPS Modules with non-standard id */ 94 { USB_DEVICE(0x044e, 0x3001) }, 95 { USB_DEVICE(0x044e, 0x3002) }, 96 97 /* Ericsson with non-standard id */ 98 { USB_DEVICE(0x0bdb, 0x1002) }, 99 100 /* Canyon CN-BTU1 with HID interfaces */ 101 { USB_DEVICE(0x0c10, 0x0000) }, 102 103 /* Broadcom BCM20702A0 */ 104 { USB_DEVICE(0x0a5c, 0x21e3) }, 105 { USB_DEVICE(0x413c, 0x8197) }, 106 107 { } /* Terminating entry */ 108 }; 109 110 MODULE_DEVICE_TABLE(usb, btusb_table); 111 112 static struct usb_device_id blacklist_table[] = { 113 /* CSR BlueCore devices */ 114 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR }, 115 116 /* Broadcom BCM2033 without firmware */ 117 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE }, 118 119 /* Atheros 3011 with sflash firmware */ 120 { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE }, 121 { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE }, 122 { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE }, 123 124 /* Atheros AR9285 Malbec with sflash firmware */ 125 { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE }, 126 127 /* Atheros 3012 with sflash firmware */ 128 { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 }, 129 130 /* Atheros AR5BBU12 with sflash firmware */ 131 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE }, 132 133 /* Broadcom BCM2035 */ 134 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU }, 135 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU }, 136 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 }, 137 138 /* Broadcom BCM2045 */ 139 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU }, 140 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU }, 141 142 /* IBM/Lenovo ThinkPad with Broadcom chip */ 143 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU }, 144 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU }, 145 146 /* HP laptop with Broadcom chip */ 147 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU }, 148 149 /* Dell laptop with Broadcom chip */ 150 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU }, 151 152 /* Dell Wireless 370 and 410 devices */ 153 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU }, 154 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU }, 155 156 /* Belkin F8T012 and F8T013 devices */ 157 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU }, 158 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU }, 159 160 /* Asus WL-BTD202 device */ 161 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU }, 162 163 /* Kensington Bluetooth USB adapter */ 164 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU }, 165 166 /* RTX Telecom based adapters with buggy SCO support */ 167 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC }, 168 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC }, 169 170 /* CONWISE Technology based adapters with buggy SCO support */ 171 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC }, 172 173 /* Digianswer devices */ 174 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER }, 175 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE }, 176 177 /* CSR BlueCore Bluetooth Sniffer */ 178 { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER }, 179 180 /* Frontline ComProbe Bluetooth Sniffer */ 181 { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER }, 182 183 { } /* Terminating entry */ 184 }; 185 186 #define BTUSB_MAX_ISOC_FRAMES 10 187 188 #define BTUSB_INTR_RUNNING 0 189 #define BTUSB_BULK_RUNNING 1 190 #define BTUSB_ISOC_RUNNING 2 191 #define BTUSB_SUSPENDING 3 192 #define BTUSB_DID_ISO_RESUME 4 193 194 struct btusb_data { 195 struct hci_dev *hdev; 196 struct usb_device *udev; 197 struct usb_interface *intf; 198 struct usb_interface *isoc; 199 200 spinlock_t lock; 201 202 unsigned long flags; 203 204 struct work_struct work; 205 struct work_struct waker; 206 207 struct usb_anchor tx_anchor; 208 struct usb_anchor intr_anchor; 209 struct usb_anchor bulk_anchor; 210 struct usb_anchor isoc_anchor; 211 struct usb_anchor deferred; 212 int tx_in_flight; 213 spinlock_t txlock; 214 215 struct usb_endpoint_descriptor *intr_ep; 216 struct usb_endpoint_descriptor *bulk_tx_ep; 217 struct usb_endpoint_descriptor *bulk_rx_ep; 218 struct usb_endpoint_descriptor *isoc_tx_ep; 219 struct usb_endpoint_descriptor *isoc_rx_ep; 220 221 __u8 cmdreq_type; 222 223 unsigned int sco_num; 224 int isoc_altsetting; 225 int suspend_count; 226 }; 227 228 static int inc_tx(struct btusb_data *data) 229 { 230 unsigned long flags; 231 int rv; 232 233 spin_lock_irqsave(&data->txlock, flags); 234 rv = test_bit(BTUSB_SUSPENDING, &data->flags); 235 if (!rv) 236 data->tx_in_flight++; 237 spin_unlock_irqrestore(&data->txlock, flags); 238 239 return rv; 240 } 241 242 static void btusb_intr_complete(struct urb *urb) 243 { 244 struct hci_dev *hdev = urb->context; 245 struct btusb_data *data = hdev->driver_data; 246 int err; 247 248 BT_DBG("%s urb %p status %d count %d", hdev->name, 249 urb, urb->status, urb->actual_length); 250 251 if (!test_bit(HCI_RUNNING, &hdev->flags)) 252 return; 253 254 if (urb->status == 0) { 255 hdev->stat.byte_rx += urb->actual_length; 256 257 if (hci_recv_fragment(hdev, HCI_EVENT_PKT, 258 urb->transfer_buffer, 259 urb->actual_length) < 0) { 260 BT_ERR("%s corrupted event packet", hdev->name); 261 hdev->stat.err_rx++; 262 } 263 } 264 265 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags)) 266 return; 267 268 usb_mark_last_busy(data->udev); 269 usb_anchor_urb(urb, &data->intr_anchor); 270 271 err = usb_submit_urb(urb, GFP_ATOMIC); 272 if (err < 0) { 273 /* -EPERM: urb is being killed; 274 * -ENODEV: device got disconnected */ 275 if (err != -EPERM && err != -ENODEV) 276 BT_ERR("%s urb %p failed to resubmit (%d)", 277 hdev->name, urb, -err); 278 usb_unanchor_urb(urb); 279 } 280 } 281 282 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags) 283 { 284 struct btusb_data *data = hdev->driver_data; 285 struct urb *urb; 286 unsigned char *buf; 287 unsigned int pipe; 288 int err, size; 289 290 BT_DBG("%s", hdev->name); 291 292 if (!data->intr_ep) 293 return -ENODEV; 294 295 urb = usb_alloc_urb(0, mem_flags); 296 if (!urb) 297 return -ENOMEM; 298 299 size = le16_to_cpu(data->intr_ep->wMaxPacketSize); 300 301 buf = kmalloc(size, mem_flags); 302 if (!buf) { 303 usb_free_urb(urb); 304 return -ENOMEM; 305 } 306 307 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress); 308 309 usb_fill_int_urb(urb, data->udev, pipe, buf, size, 310 btusb_intr_complete, hdev, 311 data->intr_ep->bInterval); 312 313 urb->transfer_flags |= URB_FREE_BUFFER; 314 315 usb_anchor_urb(urb, &data->intr_anchor); 316 317 err = usb_submit_urb(urb, mem_flags); 318 if (err < 0) { 319 if (err != -EPERM && err != -ENODEV) 320 BT_ERR("%s urb %p submission failed (%d)", 321 hdev->name, urb, -err); 322 usb_unanchor_urb(urb); 323 } 324 325 usb_free_urb(urb); 326 327 return err; 328 } 329 330 static void btusb_bulk_complete(struct urb *urb) 331 { 332 struct hci_dev *hdev = urb->context; 333 struct btusb_data *data = hdev->driver_data; 334 int err; 335 336 BT_DBG("%s urb %p status %d count %d", hdev->name, 337 urb, urb->status, urb->actual_length); 338 339 if (!test_bit(HCI_RUNNING, &hdev->flags)) 340 return; 341 342 if (urb->status == 0) { 343 hdev->stat.byte_rx += urb->actual_length; 344 345 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT, 346 urb->transfer_buffer, 347 urb->actual_length) < 0) { 348 BT_ERR("%s corrupted ACL packet", hdev->name); 349 hdev->stat.err_rx++; 350 } 351 } 352 353 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags)) 354 return; 355 356 usb_anchor_urb(urb, &data->bulk_anchor); 357 usb_mark_last_busy(data->udev); 358 359 err = usb_submit_urb(urb, GFP_ATOMIC); 360 if (err < 0) { 361 /* -EPERM: urb is being killed; 362 * -ENODEV: device got disconnected */ 363 if (err != -EPERM && err != -ENODEV) 364 BT_ERR("%s urb %p failed to resubmit (%d)", 365 hdev->name, urb, -err); 366 usb_unanchor_urb(urb); 367 } 368 } 369 370 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags) 371 { 372 struct btusb_data *data = hdev->driver_data; 373 struct urb *urb; 374 unsigned char *buf; 375 unsigned int pipe; 376 int err, size = HCI_MAX_FRAME_SIZE; 377 378 BT_DBG("%s", hdev->name); 379 380 if (!data->bulk_rx_ep) 381 return -ENODEV; 382 383 urb = usb_alloc_urb(0, mem_flags); 384 if (!urb) 385 return -ENOMEM; 386 387 buf = kmalloc(size, mem_flags); 388 if (!buf) { 389 usb_free_urb(urb); 390 return -ENOMEM; 391 } 392 393 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress); 394 395 usb_fill_bulk_urb(urb, data->udev, pipe, 396 buf, size, btusb_bulk_complete, hdev); 397 398 urb->transfer_flags |= URB_FREE_BUFFER; 399 400 usb_mark_last_busy(data->udev); 401 usb_anchor_urb(urb, &data->bulk_anchor); 402 403 err = usb_submit_urb(urb, mem_flags); 404 if (err < 0) { 405 if (err != -EPERM && err != -ENODEV) 406 BT_ERR("%s urb %p submission failed (%d)", 407 hdev->name, urb, -err); 408 usb_unanchor_urb(urb); 409 } 410 411 usb_free_urb(urb); 412 413 return err; 414 } 415 416 static void btusb_isoc_complete(struct urb *urb) 417 { 418 struct hci_dev *hdev = urb->context; 419 struct btusb_data *data = hdev->driver_data; 420 int i, err; 421 422 BT_DBG("%s urb %p status %d count %d", hdev->name, 423 urb, urb->status, urb->actual_length); 424 425 if (!test_bit(HCI_RUNNING, &hdev->flags)) 426 return; 427 428 if (urb->status == 0) { 429 for (i = 0; i < urb->number_of_packets; i++) { 430 unsigned int offset = urb->iso_frame_desc[i].offset; 431 unsigned int length = urb->iso_frame_desc[i].actual_length; 432 433 if (urb->iso_frame_desc[i].status) 434 continue; 435 436 hdev->stat.byte_rx += length; 437 438 if (hci_recv_fragment(hdev, HCI_SCODATA_PKT, 439 urb->transfer_buffer + offset, 440 length) < 0) { 441 BT_ERR("%s corrupted SCO packet", hdev->name); 442 hdev->stat.err_rx++; 443 } 444 } 445 } 446 447 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags)) 448 return; 449 450 usb_anchor_urb(urb, &data->isoc_anchor); 451 452 err = usb_submit_urb(urb, GFP_ATOMIC); 453 if (err < 0) { 454 /* -EPERM: urb is being killed; 455 * -ENODEV: device got disconnected */ 456 if (err != -EPERM && err != -ENODEV) 457 BT_ERR("%s urb %p failed to resubmit (%d)", 458 hdev->name, urb, -err); 459 usb_unanchor_urb(urb); 460 } 461 } 462 463 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu) 464 { 465 int i, offset = 0; 466 467 BT_DBG("len %d mtu %d", len, mtu); 468 469 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu; 470 i++, offset += mtu, len -= mtu) { 471 urb->iso_frame_desc[i].offset = offset; 472 urb->iso_frame_desc[i].length = mtu; 473 } 474 475 if (len && i < BTUSB_MAX_ISOC_FRAMES) { 476 urb->iso_frame_desc[i].offset = offset; 477 urb->iso_frame_desc[i].length = len; 478 i++; 479 } 480 481 urb->number_of_packets = i; 482 } 483 484 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags) 485 { 486 struct btusb_data *data = hdev->driver_data; 487 struct urb *urb; 488 unsigned char *buf; 489 unsigned int pipe; 490 int err, size; 491 492 BT_DBG("%s", hdev->name); 493 494 if (!data->isoc_rx_ep) 495 return -ENODEV; 496 497 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags); 498 if (!urb) 499 return -ENOMEM; 500 501 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) * 502 BTUSB_MAX_ISOC_FRAMES; 503 504 buf = kmalloc(size, mem_flags); 505 if (!buf) { 506 usb_free_urb(urb); 507 return -ENOMEM; 508 } 509 510 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress); 511 512 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete, 513 hdev, data->isoc_rx_ep->bInterval); 514 515 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP; 516 517 __fill_isoc_descriptor(urb, size, 518 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize)); 519 520 usb_anchor_urb(urb, &data->isoc_anchor); 521 522 err = usb_submit_urb(urb, mem_flags); 523 if (err < 0) { 524 if (err != -EPERM && err != -ENODEV) 525 BT_ERR("%s urb %p submission failed (%d)", 526 hdev->name, urb, -err); 527 usb_unanchor_urb(urb); 528 } 529 530 usb_free_urb(urb); 531 532 return err; 533 } 534 535 static void btusb_tx_complete(struct urb *urb) 536 { 537 struct sk_buff *skb = urb->context; 538 struct hci_dev *hdev = (struct hci_dev *) skb->dev; 539 struct btusb_data *data = hdev->driver_data; 540 541 BT_DBG("%s urb %p status %d count %d", hdev->name, 542 urb, urb->status, urb->actual_length); 543 544 if (!test_bit(HCI_RUNNING, &hdev->flags)) 545 goto done; 546 547 if (!urb->status) 548 hdev->stat.byte_tx += urb->transfer_buffer_length; 549 else 550 hdev->stat.err_tx++; 551 552 done: 553 spin_lock(&data->txlock); 554 data->tx_in_flight--; 555 spin_unlock(&data->txlock); 556 557 kfree(urb->setup_packet); 558 559 kfree_skb(skb); 560 } 561 562 static void btusb_isoc_tx_complete(struct urb *urb) 563 { 564 struct sk_buff *skb = urb->context; 565 struct hci_dev *hdev = (struct hci_dev *) skb->dev; 566 567 BT_DBG("%s urb %p status %d count %d", hdev->name, 568 urb, urb->status, urb->actual_length); 569 570 if (!test_bit(HCI_RUNNING, &hdev->flags)) 571 goto done; 572 573 if (!urb->status) 574 hdev->stat.byte_tx += urb->transfer_buffer_length; 575 else 576 hdev->stat.err_tx++; 577 578 done: 579 kfree(urb->setup_packet); 580 581 kfree_skb(skb); 582 } 583 584 static int btusb_open(struct hci_dev *hdev) 585 { 586 struct btusb_data *data = hdev->driver_data; 587 int err; 588 589 BT_DBG("%s", hdev->name); 590 591 err = usb_autopm_get_interface(data->intf); 592 if (err < 0) 593 return err; 594 595 data->intf->needs_remote_wakeup = 1; 596 597 if (test_and_set_bit(HCI_RUNNING, &hdev->flags)) 598 goto done; 599 600 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags)) 601 goto done; 602 603 err = btusb_submit_intr_urb(hdev, GFP_KERNEL); 604 if (err < 0) 605 goto failed; 606 607 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL); 608 if (err < 0) { 609 usb_kill_anchored_urbs(&data->intr_anchor); 610 goto failed; 611 } 612 613 set_bit(BTUSB_BULK_RUNNING, &data->flags); 614 btusb_submit_bulk_urb(hdev, GFP_KERNEL); 615 616 done: 617 usb_autopm_put_interface(data->intf); 618 return 0; 619 620 failed: 621 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 622 clear_bit(HCI_RUNNING, &hdev->flags); 623 usb_autopm_put_interface(data->intf); 624 return err; 625 } 626 627 static void btusb_stop_traffic(struct btusb_data *data) 628 { 629 usb_kill_anchored_urbs(&data->intr_anchor); 630 usb_kill_anchored_urbs(&data->bulk_anchor); 631 usb_kill_anchored_urbs(&data->isoc_anchor); 632 } 633 634 static int btusb_close(struct hci_dev *hdev) 635 { 636 struct btusb_data *data = hdev->driver_data; 637 int err; 638 639 BT_DBG("%s", hdev->name); 640 641 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags)) 642 return 0; 643 644 cancel_work_sync(&data->work); 645 cancel_work_sync(&data->waker); 646 647 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 648 clear_bit(BTUSB_BULK_RUNNING, &data->flags); 649 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 650 651 btusb_stop_traffic(data); 652 err = usb_autopm_get_interface(data->intf); 653 if (err < 0) 654 goto failed; 655 656 data->intf->needs_remote_wakeup = 0; 657 usb_autopm_put_interface(data->intf); 658 659 failed: 660 usb_scuttle_anchored_urbs(&data->deferred); 661 return 0; 662 } 663 664 static int btusb_flush(struct hci_dev *hdev) 665 { 666 struct btusb_data *data = hdev->driver_data; 667 668 BT_DBG("%s", hdev->name); 669 670 usb_kill_anchored_urbs(&data->tx_anchor); 671 672 return 0; 673 } 674 675 static int btusb_send_frame(struct sk_buff *skb) 676 { 677 struct hci_dev *hdev = (struct hci_dev *) skb->dev; 678 struct btusb_data *data = hdev->driver_data; 679 struct usb_ctrlrequest *dr; 680 struct urb *urb; 681 unsigned int pipe; 682 int err; 683 684 BT_DBG("%s", hdev->name); 685 686 if (!test_bit(HCI_RUNNING, &hdev->flags)) 687 return -EBUSY; 688 689 switch (bt_cb(skb)->pkt_type) { 690 case HCI_COMMAND_PKT: 691 urb = usb_alloc_urb(0, GFP_ATOMIC); 692 if (!urb) 693 return -ENOMEM; 694 695 dr = kmalloc(sizeof(*dr), GFP_ATOMIC); 696 if (!dr) { 697 usb_free_urb(urb); 698 return -ENOMEM; 699 } 700 701 dr->bRequestType = data->cmdreq_type; 702 dr->bRequest = 0; 703 dr->wIndex = 0; 704 dr->wValue = 0; 705 dr->wLength = __cpu_to_le16(skb->len); 706 707 pipe = usb_sndctrlpipe(data->udev, 0x00); 708 709 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr, 710 skb->data, skb->len, btusb_tx_complete, skb); 711 712 hdev->stat.cmd_tx++; 713 break; 714 715 case HCI_ACLDATA_PKT: 716 if (!data->bulk_tx_ep) 717 return -ENODEV; 718 719 urb = usb_alloc_urb(0, GFP_ATOMIC); 720 if (!urb) 721 return -ENOMEM; 722 723 pipe = usb_sndbulkpipe(data->udev, 724 data->bulk_tx_ep->bEndpointAddress); 725 726 usb_fill_bulk_urb(urb, data->udev, pipe, 727 skb->data, skb->len, btusb_tx_complete, skb); 728 729 if (skb->priority >= HCI_PRIO_MAX - 1) 730 urb->transfer_flags = URB_ISO_ASAP; 731 732 hdev->stat.acl_tx++; 733 break; 734 735 case HCI_SCODATA_PKT: 736 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1) 737 return -ENODEV; 738 739 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC); 740 if (!urb) 741 return -ENOMEM; 742 743 pipe = usb_sndisocpipe(data->udev, 744 data->isoc_tx_ep->bEndpointAddress); 745 746 usb_fill_int_urb(urb, data->udev, pipe, 747 skb->data, skb->len, btusb_isoc_tx_complete, 748 skb, data->isoc_tx_ep->bInterval); 749 750 urb->transfer_flags = URB_ISO_ASAP; 751 752 __fill_isoc_descriptor(urb, skb->len, 753 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize)); 754 755 hdev->stat.sco_tx++; 756 goto skip_waking; 757 758 default: 759 return -EILSEQ; 760 } 761 762 err = inc_tx(data); 763 if (err) { 764 usb_anchor_urb(urb, &data->deferred); 765 schedule_work(&data->waker); 766 err = 0; 767 goto done; 768 } 769 770 skip_waking: 771 usb_anchor_urb(urb, &data->tx_anchor); 772 773 err = usb_submit_urb(urb, GFP_ATOMIC); 774 if (err < 0) { 775 if (err != -EPERM && err != -ENODEV) 776 BT_ERR("%s urb %p submission failed (%d)", 777 hdev->name, urb, -err); 778 kfree(urb->setup_packet); 779 usb_unanchor_urb(urb); 780 } else { 781 usb_mark_last_busy(data->udev); 782 } 783 784 done: 785 usb_free_urb(urb); 786 return err; 787 } 788 789 static void btusb_destruct(struct hci_dev *hdev) 790 { 791 struct btusb_data *data = hdev->driver_data; 792 793 BT_DBG("%s", hdev->name); 794 795 kfree(data); 796 } 797 798 static void btusb_notify(struct hci_dev *hdev, unsigned int evt) 799 { 800 struct btusb_data *data = hdev->driver_data; 801 802 BT_DBG("%s evt %d", hdev->name, evt); 803 804 if (hdev->conn_hash.sco_num != data->sco_num) { 805 data->sco_num = hdev->conn_hash.sco_num; 806 schedule_work(&data->work); 807 } 808 } 809 810 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting) 811 { 812 struct btusb_data *data = hdev->driver_data; 813 struct usb_interface *intf = data->isoc; 814 struct usb_endpoint_descriptor *ep_desc; 815 int i, err; 816 817 if (!data->isoc) 818 return -ENODEV; 819 820 err = usb_set_interface(data->udev, 1, altsetting); 821 if (err < 0) { 822 BT_ERR("%s setting interface failed (%d)", hdev->name, -err); 823 return err; 824 } 825 826 data->isoc_altsetting = altsetting; 827 828 data->isoc_tx_ep = NULL; 829 data->isoc_rx_ep = NULL; 830 831 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { 832 ep_desc = &intf->cur_altsetting->endpoint[i].desc; 833 834 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) { 835 data->isoc_tx_ep = ep_desc; 836 continue; 837 } 838 839 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) { 840 data->isoc_rx_ep = ep_desc; 841 continue; 842 } 843 } 844 845 if (!data->isoc_tx_ep || !data->isoc_rx_ep) { 846 BT_ERR("%s invalid SCO descriptors", hdev->name); 847 return -ENODEV; 848 } 849 850 return 0; 851 } 852 853 static void btusb_work(struct work_struct *work) 854 { 855 struct btusb_data *data = container_of(work, struct btusb_data, work); 856 struct hci_dev *hdev = data->hdev; 857 int err; 858 859 if (hdev->conn_hash.sco_num > 0) { 860 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) { 861 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf); 862 if (err < 0) { 863 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 864 usb_kill_anchored_urbs(&data->isoc_anchor); 865 return; 866 } 867 868 set_bit(BTUSB_DID_ISO_RESUME, &data->flags); 869 } 870 if (data->isoc_altsetting != 2) { 871 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 872 usb_kill_anchored_urbs(&data->isoc_anchor); 873 874 if (__set_isoc_interface(hdev, 2) < 0) 875 return; 876 } 877 878 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) { 879 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0) 880 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 881 else 882 btusb_submit_isoc_urb(hdev, GFP_KERNEL); 883 } 884 } else { 885 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 886 usb_kill_anchored_urbs(&data->isoc_anchor); 887 888 __set_isoc_interface(hdev, 0); 889 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags)) 890 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf); 891 } 892 } 893 894 static void btusb_waker(struct work_struct *work) 895 { 896 struct btusb_data *data = container_of(work, struct btusb_data, waker); 897 int err; 898 899 err = usb_autopm_get_interface(data->intf); 900 if (err < 0) 901 return; 902 903 usb_autopm_put_interface(data->intf); 904 } 905 906 static int btusb_probe(struct usb_interface *intf, 907 const struct usb_device_id *id) 908 { 909 struct usb_endpoint_descriptor *ep_desc; 910 struct btusb_data *data; 911 struct hci_dev *hdev; 912 int i, err; 913 914 BT_DBG("intf %p id %p", intf, id); 915 916 /* interface numbers are hardcoded in the spec */ 917 if (intf->cur_altsetting->desc.bInterfaceNumber != 0) 918 return -ENODEV; 919 920 if (!id->driver_info) { 921 const struct usb_device_id *match; 922 match = usb_match_id(intf, blacklist_table); 923 if (match) 924 id = match; 925 } 926 927 if (id->driver_info == BTUSB_IGNORE) 928 return -ENODEV; 929 930 if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER) 931 return -ENODEV; 932 933 if (ignore_csr && id->driver_info & BTUSB_CSR) 934 return -ENODEV; 935 936 if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER) 937 return -ENODEV; 938 939 if (id->driver_info & BTUSB_ATH3012) { 940 struct usb_device *udev = interface_to_usbdev(intf); 941 942 /* Old firmware would otherwise let ath3k driver load 943 * patch and sysconfig files */ 944 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001) 945 return -ENODEV; 946 } 947 948 data = kzalloc(sizeof(*data), GFP_KERNEL); 949 if (!data) 950 return -ENOMEM; 951 952 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { 953 ep_desc = &intf->cur_altsetting->endpoint[i].desc; 954 955 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) { 956 data->intr_ep = ep_desc; 957 continue; 958 } 959 960 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) { 961 data->bulk_tx_ep = ep_desc; 962 continue; 963 } 964 965 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) { 966 data->bulk_rx_ep = ep_desc; 967 continue; 968 } 969 } 970 971 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) { 972 kfree(data); 973 return -ENODEV; 974 } 975 976 data->cmdreq_type = USB_TYPE_CLASS; 977 978 data->udev = interface_to_usbdev(intf); 979 data->intf = intf; 980 981 spin_lock_init(&data->lock); 982 983 INIT_WORK(&data->work, btusb_work); 984 INIT_WORK(&data->waker, btusb_waker); 985 spin_lock_init(&data->txlock); 986 987 init_usb_anchor(&data->tx_anchor); 988 init_usb_anchor(&data->intr_anchor); 989 init_usb_anchor(&data->bulk_anchor); 990 init_usb_anchor(&data->isoc_anchor); 991 init_usb_anchor(&data->deferred); 992 993 hdev = hci_alloc_dev(); 994 if (!hdev) { 995 kfree(data); 996 return -ENOMEM; 997 } 998 999 hdev->bus = HCI_USB; 1000 hdev->driver_data = data; 1001 1002 data->hdev = hdev; 1003 1004 SET_HCIDEV_DEV(hdev, &intf->dev); 1005 1006 hdev->open = btusb_open; 1007 hdev->close = btusb_close; 1008 hdev->flush = btusb_flush; 1009 hdev->send = btusb_send_frame; 1010 hdev->destruct = btusb_destruct; 1011 hdev->notify = btusb_notify; 1012 1013 hdev->owner = THIS_MODULE; 1014 1015 /* Interface numbers are hardcoded in the specification */ 1016 data->isoc = usb_ifnum_to_if(data->udev, 1); 1017 1018 if (!reset) 1019 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks); 1020 1021 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) { 1022 if (!disable_scofix) 1023 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks); 1024 } 1025 1026 if (id->driver_info & BTUSB_BROKEN_ISOC) 1027 data->isoc = NULL; 1028 1029 if (id->driver_info & BTUSB_DIGIANSWER) { 1030 data->cmdreq_type = USB_TYPE_VENDOR; 1031 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks); 1032 } 1033 1034 if (id->driver_info & BTUSB_CSR) { 1035 struct usb_device *udev = data->udev; 1036 1037 /* Old firmware would otherwise execute USB reset */ 1038 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117) 1039 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks); 1040 } 1041 1042 if (id->driver_info & BTUSB_SNIFFER) { 1043 struct usb_device *udev = data->udev; 1044 1045 /* New sniffer firmware has crippled HCI interface */ 1046 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997) 1047 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks); 1048 1049 data->isoc = NULL; 1050 } 1051 1052 if (id->driver_info & BTUSB_BCM92035) { 1053 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 }; 1054 struct sk_buff *skb; 1055 1056 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL); 1057 if (skb) { 1058 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd)); 1059 skb_queue_tail(&hdev->driver_init, skb); 1060 } 1061 } 1062 1063 if (data->isoc) { 1064 err = usb_driver_claim_interface(&btusb_driver, 1065 data->isoc, data); 1066 if (err < 0) { 1067 hci_free_dev(hdev); 1068 kfree(data); 1069 return err; 1070 } 1071 } 1072 1073 err = hci_register_dev(hdev); 1074 if (err < 0) { 1075 hci_free_dev(hdev); 1076 kfree(data); 1077 return err; 1078 } 1079 1080 usb_set_intfdata(intf, data); 1081 1082 return 0; 1083 } 1084 1085 static void btusb_disconnect(struct usb_interface *intf) 1086 { 1087 struct btusb_data *data = usb_get_intfdata(intf); 1088 struct hci_dev *hdev; 1089 1090 BT_DBG("intf %p", intf); 1091 1092 if (!data) 1093 return; 1094 1095 hdev = data->hdev; 1096 1097 __hci_dev_hold(hdev); 1098 1099 usb_set_intfdata(data->intf, NULL); 1100 1101 if (data->isoc) 1102 usb_set_intfdata(data->isoc, NULL); 1103 1104 hci_unregister_dev(hdev); 1105 1106 if (intf == data->isoc) 1107 usb_driver_release_interface(&btusb_driver, data->intf); 1108 else if (data->isoc) 1109 usb_driver_release_interface(&btusb_driver, data->isoc); 1110 1111 __hci_dev_put(hdev); 1112 1113 hci_free_dev(hdev); 1114 } 1115 1116 #ifdef CONFIG_PM 1117 static int btusb_suspend(struct usb_interface *intf, pm_message_t message) 1118 { 1119 struct btusb_data *data = usb_get_intfdata(intf); 1120 1121 BT_DBG("intf %p", intf); 1122 1123 if (data->suspend_count++) 1124 return 0; 1125 1126 spin_lock_irq(&data->txlock); 1127 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) { 1128 set_bit(BTUSB_SUSPENDING, &data->flags); 1129 spin_unlock_irq(&data->txlock); 1130 } else { 1131 spin_unlock_irq(&data->txlock); 1132 data->suspend_count--; 1133 return -EBUSY; 1134 } 1135 1136 cancel_work_sync(&data->work); 1137 1138 btusb_stop_traffic(data); 1139 usb_kill_anchored_urbs(&data->tx_anchor); 1140 1141 return 0; 1142 } 1143 1144 static void play_deferred(struct btusb_data *data) 1145 { 1146 struct urb *urb; 1147 int err; 1148 1149 while ((urb = usb_get_from_anchor(&data->deferred))) { 1150 err = usb_submit_urb(urb, GFP_ATOMIC); 1151 if (err < 0) 1152 break; 1153 1154 data->tx_in_flight++; 1155 } 1156 usb_scuttle_anchored_urbs(&data->deferred); 1157 } 1158 1159 static int btusb_resume(struct usb_interface *intf) 1160 { 1161 struct btusb_data *data = usb_get_intfdata(intf); 1162 struct hci_dev *hdev = data->hdev; 1163 int err = 0; 1164 1165 BT_DBG("intf %p", intf); 1166 1167 if (--data->suspend_count) 1168 return 0; 1169 1170 if (!test_bit(HCI_RUNNING, &hdev->flags)) 1171 goto done; 1172 1173 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) { 1174 err = btusb_submit_intr_urb(hdev, GFP_NOIO); 1175 if (err < 0) { 1176 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 1177 goto failed; 1178 } 1179 } 1180 1181 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) { 1182 err = btusb_submit_bulk_urb(hdev, GFP_NOIO); 1183 if (err < 0) { 1184 clear_bit(BTUSB_BULK_RUNNING, &data->flags); 1185 goto failed; 1186 } 1187 1188 btusb_submit_bulk_urb(hdev, GFP_NOIO); 1189 } 1190 1191 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) { 1192 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0) 1193 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1194 else 1195 btusb_submit_isoc_urb(hdev, GFP_NOIO); 1196 } 1197 1198 spin_lock_irq(&data->txlock); 1199 play_deferred(data); 1200 clear_bit(BTUSB_SUSPENDING, &data->flags); 1201 spin_unlock_irq(&data->txlock); 1202 schedule_work(&data->work); 1203 1204 return 0; 1205 1206 failed: 1207 usb_scuttle_anchored_urbs(&data->deferred); 1208 done: 1209 spin_lock_irq(&data->txlock); 1210 clear_bit(BTUSB_SUSPENDING, &data->flags); 1211 spin_unlock_irq(&data->txlock); 1212 1213 return err; 1214 } 1215 #endif 1216 1217 static struct usb_driver btusb_driver = { 1218 .name = "btusb", 1219 .probe = btusb_probe, 1220 .disconnect = btusb_disconnect, 1221 #ifdef CONFIG_PM 1222 .suspend = btusb_suspend, 1223 .resume = btusb_resume, 1224 #endif 1225 .id_table = btusb_table, 1226 .supports_autosuspend = 1, 1227 }; 1228 1229 module_usb_driver(btusb_driver); 1230 1231 module_param(ignore_dga, bool, 0644); 1232 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001"); 1233 1234 module_param(ignore_csr, bool, 0644); 1235 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001"); 1236 1237 module_param(ignore_sniffer, bool, 0644); 1238 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002"); 1239 1240 module_param(disable_scofix, bool, 0644); 1241 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size"); 1242 1243 module_param(force_scofix, bool, 0644); 1244 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size"); 1245 1246 module_param(reset, bool, 0644); 1247 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization"); 1248 1249 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); 1250 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION); 1251 MODULE_VERSION(VERSION); 1252 MODULE_LICENSE("GPL"); 1253