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(0x0a5c, 0x21f3) }, 106 { USB_DEVICE(0x413c, 0x8197) }, 107 108 { } /* Terminating entry */ 109 }; 110 111 MODULE_DEVICE_TABLE(usb, btusb_table); 112 113 static struct usb_device_id blacklist_table[] = { 114 /* CSR BlueCore devices */ 115 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR }, 116 117 /* Broadcom BCM2033 without firmware */ 118 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE }, 119 120 /* Atheros 3011 with sflash firmware */ 121 { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE }, 122 { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE }, 123 { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE }, 124 125 /* Atheros AR9285 Malbec with sflash firmware */ 126 { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE }, 127 128 /* Atheros 3012 with sflash firmware */ 129 { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 }, 130 131 /* Atheros AR5BBU12 with sflash firmware */ 132 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE }, 133 134 /* Broadcom BCM2035 */ 135 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU }, 136 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU }, 137 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 }, 138 139 /* Broadcom BCM2045 */ 140 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU }, 141 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU }, 142 143 /* IBM/Lenovo ThinkPad with Broadcom chip */ 144 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU }, 145 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU }, 146 147 /* HP laptop with Broadcom chip */ 148 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU }, 149 150 /* Dell laptop with Broadcom chip */ 151 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU }, 152 153 /* Dell Wireless 370 and 410 devices */ 154 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU }, 155 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU }, 156 157 /* Belkin F8T012 and F8T013 devices */ 158 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU }, 159 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU }, 160 161 /* Asus WL-BTD202 device */ 162 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU }, 163 164 /* Kensington Bluetooth USB adapter */ 165 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU }, 166 167 /* RTX Telecom based adapters with buggy SCO support */ 168 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC }, 169 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC }, 170 171 /* CONWISE Technology based adapters with buggy SCO support */ 172 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC }, 173 174 /* Digianswer devices */ 175 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER }, 176 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE }, 177 178 /* CSR BlueCore Bluetooth Sniffer */ 179 { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER }, 180 181 /* Frontline ComProbe Bluetooth Sniffer */ 182 { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER }, 183 184 { } /* Terminating entry */ 185 }; 186 187 #define BTUSB_MAX_ISOC_FRAMES 10 188 189 #define BTUSB_INTR_RUNNING 0 190 #define BTUSB_BULK_RUNNING 1 191 #define BTUSB_ISOC_RUNNING 2 192 #define BTUSB_SUSPENDING 3 193 #define BTUSB_DID_ISO_RESUME 4 194 195 struct btusb_data { 196 struct hci_dev *hdev; 197 struct usb_device *udev; 198 struct usb_interface *intf; 199 struct usb_interface *isoc; 200 201 spinlock_t lock; 202 203 unsigned long flags; 204 205 struct work_struct work; 206 struct work_struct waker; 207 208 struct usb_anchor tx_anchor; 209 struct usb_anchor intr_anchor; 210 struct usb_anchor bulk_anchor; 211 struct usb_anchor isoc_anchor; 212 struct usb_anchor deferred; 213 int tx_in_flight; 214 spinlock_t txlock; 215 216 struct usb_endpoint_descriptor *intr_ep; 217 struct usb_endpoint_descriptor *bulk_tx_ep; 218 struct usb_endpoint_descriptor *bulk_rx_ep; 219 struct usb_endpoint_descriptor *isoc_tx_ep; 220 struct usb_endpoint_descriptor *isoc_rx_ep; 221 222 __u8 cmdreq_type; 223 224 unsigned int sco_num; 225 int isoc_altsetting; 226 int suspend_count; 227 }; 228 229 static int inc_tx(struct btusb_data *data) 230 { 231 unsigned long flags; 232 int rv; 233 234 spin_lock_irqsave(&data->txlock, flags); 235 rv = test_bit(BTUSB_SUSPENDING, &data->flags); 236 if (!rv) 237 data->tx_in_flight++; 238 spin_unlock_irqrestore(&data->txlock, flags); 239 240 return rv; 241 } 242 243 static void btusb_intr_complete(struct urb *urb) 244 { 245 struct hci_dev *hdev = urb->context; 246 struct btusb_data *data = hdev->driver_data; 247 int err; 248 249 BT_DBG("%s urb %p status %d count %d", hdev->name, 250 urb, urb->status, urb->actual_length); 251 252 if (!test_bit(HCI_RUNNING, &hdev->flags)) 253 return; 254 255 if (urb->status == 0) { 256 hdev->stat.byte_rx += urb->actual_length; 257 258 if (hci_recv_fragment(hdev, HCI_EVENT_PKT, 259 urb->transfer_buffer, 260 urb->actual_length) < 0) { 261 BT_ERR("%s corrupted event packet", hdev->name); 262 hdev->stat.err_rx++; 263 } 264 } 265 266 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags)) 267 return; 268 269 usb_mark_last_busy(data->udev); 270 usb_anchor_urb(urb, &data->intr_anchor); 271 272 err = usb_submit_urb(urb, GFP_ATOMIC); 273 if (err < 0) { 274 /* -EPERM: urb is being killed; 275 * -ENODEV: device got disconnected */ 276 if (err != -EPERM && err != -ENODEV) 277 BT_ERR("%s urb %p failed to resubmit (%d)", 278 hdev->name, urb, -err); 279 usb_unanchor_urb(urb); 280 } 281 } 282 283 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags) 284 { 285 struct btusb_data *data = hdev->driver_data; 286 struct urb *urb; 287 unsigned char *buf; 288 unsigned int pipe; 289 int err, size; 290 291 BT_DBG("%s", hdev->name); 292 293 if (!data->intr_ep) 294 return -ENODEV; 295 296 urb = usb_alloc_urb(0, mem_flags); 297 if (!urb) 298 return -ENOMEM; 299 300 size = le16_to_cpu(data->intr_ep->wMaxPacketSize); 301 302 buf = kmalloc(size, mem_flags); 303 if (!buf) { 304 usb_free_urb(urb); 305 return -ENOMEM; 306 } 307 308 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress); 309 310 usb_fill_int_urb(urb, data->udev, pipe, buf, size, 311 btusb_intr_complete, hdev, 312 data->intr_ep->bInterval); 313 314 urb->transfer_flags |= URB_FREE_BUFFER; 315 316 usb_anchor_urb(urb, &data->intr_anchor); 317 318 err = usb_submit_urb(urb, mem_flags); 319 if (err < 0) { 320 if (err != -EPERM && err != -ENODEV) 321 BT_ERR("%s urb %p submission failed (%d)", 322 hdev->name, urb, -err); 323 usb_unanchor_urb(urb); 324 } 325 326 usb_free_urb(urb); 327 328 return err; 329 } 330 331 static void btusb_bulk_complete(struct urb *urb) 332 { 333 struct hci_dev *hdev = urb->context; 334 struct btusb_data *data = hdev->driver_data; 335 int err; 336 337 BT_DBG("%s urb %p status %d count %d", hdev->name, 338 urb, urb->status, urb->actual_length); 339 340 if (!test_bit(HCI_RUNNING, &hdev->flags)) 341 return; 342 343 if (urb->status == 0) { 344 hdev->stat.byte_rx += urb->actual_length; 345 346 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT, 347 urb->transfer_buffer, 348 urb->actual_length) < 0) { 349 BT_ERR("%s corrupted ACL packet", hdev->name); 350 hdev->stat.err_rx++; 351 } 352 } 353 354 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags)) 355 return; 356 357 usb_anchor_urb(urb, &data->bulk_anchor); 358 usb_mark_last_busy(data->udev); 359 360 err = usb_submit_urb(urb, GFP_ATOMIC); 361 if (err < 0) { 362 /* -EPERM: urb is being killed; 363 * -ENODEV: device got disconnected */ 364 if (err != -EPERM && err != -ENODEV) 365 BT_ERR("%s urb %p failed to resubmit (%d)", 366 hdev->name, urb, -err); 367 usb_unanchor_urb(urb); 368 } 369 } 370 371 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags) 372 { 373 struct btusb_data *data = hdev->driver_data; 374 struct urb *urb; 375 unsigned char *buf; 376 unsigned int pipe; 377 int err, size = HCI_MAX_FRAME_SIZE; 378 379 BT_DBG("%s", hdev->name); 380 381 if (!data->bulk_rx_ep) 382 return -ENODEV; 383 384 urb = usb_alloc_urb(0, mem_flags); 385 if (!urb) 386 return -ENOMEM; 387 388 buf = kmalloc(size, mem_flags); 389 if (!buf) { 390 usb_free_urb(urb); 391 return -ENOMEM; 392 } 393 394 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress); 395 396 usb_fill_bulk_urb(urb, data->udev, pipe, 397 buf, size, btusb_bulk_complete, hdev); 398 399 urb->transfer_flags |= URB_FREE_BUFFER; 400 401 usb_mark_last_busy(data->udev); 402 usb_anchor_urb(urb, &data->bulk_anchor); 403 404 err = usb_submit_urb(urb, mem_flags); 405 if (err < 0) { 406 if (err != -EPERM && err != -ENODEV) 407 BT_ERR("%s urb %p submission failed (%d)", 408 hdev->name, urb, -err); 409 usb_unanchor_urb(urb); 410 } 411 412 usb_free_urb(urb); 413 414 return err; 415 } 416 417 static void btusb_isoc_complete(struct urb *urb) 418 { 419 struct hci_dev *hdev = urb->context; 420 struct btusb_data *data = hdev->driver_data; 421 int i, err; 422 423 BT_DBG("%s urb %p status %d count %d", hdev->name, 424 urb, urb->status, urb->actual_length); 425 426 if (!test_bit(HCI_RUNNING, &hdev->flags)) 427 return; 428 429 if (urb->status == 0) { 430 for (i = 0; i < urb->number_of_packets; i++) { 431 unsigned int offset = urb->iso_frame_desc[i].offset; 432 unsigned int length = urb->iso_frame_desc[i].actual_length; 433 434 if (urb->iso_frame_desc[i].status) 435 continue; 436 437 hdev->stat.byte_rx += length; 438 439 if (hci_recv_fragment(hdev, HCI_SCODATA_PKT, 440 urb->transfer_buffer + offset, 441 length) < 0) { 442 BT_ERR("%s corrupted SCO packet", hdev->name); 443 hdev->stat.err_rx++; 444 } 445 } 446 } 447 448 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags)) 449 return; 450 451 usb_anchor_urb(urb, &data->isoc_anchor); 452 453 err = usb_submit_urb(urb, GFP_ATOMIC); 454 if (err < 0) { 455 /* -EPERM: urb is being killed; 456 * -ENODEV: device got disconnected */ 457 if (err != -EPERM && err != -ENODEV) 458 BT_ERR("%s urb %p failed to resubmit (%d)", 459 hdev->name, urb, -err); 460 usb_unanchor_urb(urb); 461 } 462 } 463 464 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu) 465 { 466 int i, offset = 0; 467 468 BT_DBG("len %d mtu %d", len, mtu); 469 470 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu; 471 i++, offset += mtu, len -= mtu) { 472 urb->iso_frame_desc[i].offset = offset; 473 urb->iso_frame_desc[i].length = mtu; 474 } 475 476 if (len && i < BTUSB_MAX_ISOC_FRAMES) { 477 urb->iso_frame_desc[i].offset = offset; 478 urb->iso_frame_desc[i].length = len; 479 i++; 480 } 481 482 urb->number_of_packets = i; 483 } 484 485 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags) 486 { 487 struct btusb_data *data = hdev->driver_data; 488 struct urb *urb; 489 unsigned char *buf; 490 unsigned int pipe; 491 int err, size; 492 493 BT_DBG("%s", hdev->name); 494 495 if (!data->isoc_rx_ep) 496 return -ENODEV; 497 498 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags); 499 if (!urb) 500 return -ENOMEM; 501 502 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) * 503 BTUSB_MAX_ISOC_FRAMES; 504 505 buf = kmalloc(size, mem_flags); 506 if (!buf) { 507 usb_free_urb(urb); 508 return -ENOMEM; 509 } 510 511 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress); 512 513 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete, 514 hdev, data->isoc_rx_ep->bInterval); 515 516 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP; 517 518 __fill_isoc_descriptor(urb, size, 519 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize)); 520 521 usb_anchor_urb(urb, &data->isoc_anchor); 522 523 err = usb_submit_urb(urb, mem_flags); 524 if (err < 0) { 525 if (err != -EPERM && err != -ENODEV) 526 BT_ERR("%s urb %p submission failed (%d)", 527 hdev->name, urb, -err); 528 usb_unanchor_urb(urb); 529 } 530 531 usb_free_urb(urb); 532 533 return err; 534 } 535 536 static void btusb_tx_complete(struct urb *urb) 537 { 538 struct sk_buff *skb = urb->context; 539 struct hci_dev *hdev = (struct hci_dev *) skb->dev; 540 struct btusb_data *data = hdev->driver_data; 541 542 BT_DBG("%s urb %p status %d count %d", hdev->name, 543 urb, urb->status, urb->actual_length); 544 545 if (!test_bit(HCI_RUNNING, &hdev->flags)) 546 goto done; 547 548 if (!urb->status) 549 hdev->stat.byte_tx += urb->transfer_buffer_length; 550 else 551 hdev->stat.err_tx++; 552 553 done: 554 spin_lock(&data->txlock); 555 data->tx_in_flight--; 556 spin_unlock(&data->txlock); 557 558 kfree(urb->setup_packet); 559 560 kfree_skb(skb); 561 } 562 563 static void btusb_isoc_tx_complete(struct urb *urb) 564 { 565 struct sk_buff *skb = urb->context; 566 struct hci_dev *hdev = (struct hci_dev *) skb->dev; 567 568 BT_DBG("%s urb %p status %d count %d", hdev->name, 569 urb, urb->status, urb->actual_length); 570 571 if (!test_bit(HCI_RUNNING, &hdev->flags)) 572 goto done; 573 574 if (!urb->status) 575 hdev->stat.byte_tx += urb->transfer_buffer_length; 576 else 577 hdev->stat.err_tx++; 578 579 done: 580 kfree(urb->setup_packet); 581 582 kfree_skb(skb); 583 } 584 585 static int btusb_open(struct hci_dev *hdev) 586 { 587 struct btusb_data *data = hdev->driver_data; 588 int err; 589 590 BT_DBG("%s", hdev->name); 591 592 err = usb_autopm_get_interface(data->intf); 593 if (err < 0) 594 return err; 595 596 data->intf->needs_remote_wakeup = 1; 597 598 if (test_and_set_bit(HCI_RUNNING, &hdev->flags)) 599 goto done; 600 601 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags)) 602 goto done; 603 604 err = btusb_submit_intr_urb(hdev, GFP_KERNEL); 605 if (err < 0) 606 goto failed; 607 608 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL); 609 if (err < 0) { 610 usb_kill_anchored_urbs(&data->intr_anchor); 611 goto failed; 612 } 613 614 set_bit(BTUSB_BULK_RUNNING, &data->flags); 615 btusb_submit_bulk_urb(hdev, GFP_KERNEL); 616 617 done: 618 usb_autopm_put_interface(data->intf); 619 return 0; 620 621 failed: 622 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 623 clear_bit(HCI_RUNNING, &hdev->flags); 624 usb_autopm_put_interface(data->intf); 625 return err; 626 } 627 628 static void btusb_stop_traffic(struct btusb_data *data) 629 { 630 usb_kill_anchored_urbs(&data->intr_anchor); 631 usb_kill_anchored_urbs(&data->bulk_anchor); 632 usb_kill_anchored_urbs(&data->isoc_anchor); 633 } 634 635 static int btusb_close(struct hci_dev *hdev) 636 { 637 struct btusb_data *data = hdev->driver_data; 638 int err; 639 640 BT_DBG("%s", hdev->name); 641 642 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags)) 643 return 0; 644 645 cancel_work_sync(&data->work); 646 cancel_work_sync(&data->waker); 647 648 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 649 clear_bit(BTUSB_BULK_RUNNING, &data->flags); 650 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 651 652 btusb_stop_traffic(data); 653 err = usb_autopm_get_interface(data->intf); 654 if (err < 0) 655 goto failed; 656 657 data->intf->needs_remote_wakeup = 0; 658 usb_autopm_put_interface(data->intf); 659 660 failed: 661 usb_scuttle_anchored_urbs(&data->deferred); 662 return 0; 663 } 664 665 static int btusb_flush(struct hci_dev *hdev) 666 { 667 struct btusb_data *data = hdev->driver_data; 668 669 BT_DBG("%s", hdev->name); 670 671 usb_kill_anchored_urbs(&data->tx_anchor); 672 673 return 0; 674 } 675 676 static int btusb_send_frame(struct sk_buff *skb) 677 { 678 struct hci_dev *hdev = (struct hci_dev *) skb->dev; 679 struct btusb_data *data = hdev->driver_data; 680 struct usb_ctrlrequest *dr; 681 struct urb *urb; 682 unsigned int pipe; 683 int err; 684 685 BT_DBG("%s", hdev->name); 686 687 if (!test_bit(HCI_RUNNING, &hdev->flags)) 688 return -EBUSY; 689 690 switch (bt_cb(skb)->pkt_type) { 691 case HCI_COMMAND_PKT: 692 urb = usb_alloc_urb(0, GFP_ATOMIC); 693 if (!urb) 694 return -ENOMEM; 695 696 dr = kmalloc(sizeof(*dr), GFP_ATOMIC); 697 if (!dr) { 698 usb_free_urb(urb); 699 return -ENOMEM; 700 } 701 702 dr->bRequestType = data->cmdreq_type; 703 dr->bRequest = 0; 704 dr->wIndex = 0; 705 dr->wValue = 0; 706 dr->wLength = __cpu_to_le16(skb->len); 707 708 pipe = usb_sndctrlpipe(data->udev, 0x00); 709 710 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr, 711 skb->data, skb->len, btusb_tx_complete, skb); 712 713 hdev->stat.cmd_tx++; 714 break; 715 716 case HCI_ACLDATA_PKT: 717 if (!data->bulk_tx_ep) 718 return -ENODEV; 719 720 urb = usb_alloc_urb(0, GFP_ATOMIC); 721 if (!urb) 722 return -ENOMEM; 723 724 pipe = usb_sndbulkpipe(data->udev, 725 data->bulk_tx_ep->bEndpointAddress); 726 727 usb_fill_bulk_urb(urb, data->udev, pipe, 728 skb->data, skb->len, btusb_tx_complete, skb); 729 730 hdev->stat.acl_tx++; 731 break; 732 733 case HCI_SCODATA_PKT: 734 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1) 735 return -ENODEV; 736 737 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC); 738 if (!urb) 739 return -ENOMEM; 740 741 pipe = usb_sndisocpipe(data->udev, 742 data->isoc_tx_ep->bEndpointAddress); 743 744 usb_fill_int_urb(urb, data->udev, pipe, 745 skb->data, skb->len, btusb_isoc_tx_complete, 746 skb, data->isoc_tx_ep->bInterval); 747 748 urb->transfer_flags = URB_ISO_ASAP; 749 750 __fill_isoc_descriptor(urb, skb->len, 751 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize)); 752 753 hdev->stat.sco_tx++; 754 goto skip_waking; 755 756 default: 757 return -EILSEQ; 758 } 759 760 err = inc_tx(data); 761 if (err) { 762 usb_anchor_urb(urb, &data->deferred); 763 schedule_work(&data->waker); 764 err = 0; 765 goto done; 766 } 767 768 skip_waking: 769 usb_anchor_urb(urb, &data->tx_anchor); 770 771 err = usb_submit_urb(urb, GFP_ATOMIC); 772 if (err < 0) { 773 if (err != -EPERM && err != -ENODEV) 774 BT_ERR("%s urb %p submission failed (%d)", 775 hdev->name, urb, -err); 776 kfree(urb->setup_packet); 777 usb_unanchor_urb(urb); 778 } else { 779 usb_mark_last_busy(data->udev); 780 } 781 782 done: 783 usb_free_urb(urb); 784 return err; 785 } 786 787 static void btusb_destruct(struct hci_dev *hdev) 788 { 789 struct btusb_data *data = hdev->driver_data; 790 791 BT_DBG("%s", hdev->name); 792 793 kfree(data); 794 } 795 796 static void btusb_notify(struct hci_dev *hdev, unsigned int evt) 797 { 798 struct btusb_data *data = hdev->driver_data; 799 800 BT_DBG("%s evt %d", hdev->name, evt); 801 802 if (hdev->conn_hash.sco_num != data->sco_num) { 803 data->sco_num = hdev->conn_hash.sco_num; 804 schedule_work(&data->work); 805 } 806 } 807 808 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting) 809 { 810 struct btusb_data *data = hdev->driver_data; 811 struct usb_interface *intf = data->isoc; 812 struct usb_endpoint_descriptor *ep_desc; 813 int i, err; 814 815 if (!data->isoc) 816 return -ENODEV; 817 818 err = usb_set_interface(data->udev, 1, altsetting); 819 if (err < 0) { 820 BT_ERR("%s setting interface failed (%d)", hdev->name, -err); 821 return err; 822 } 823 824 data->isoc_altsetting = altsetting; 825 826 data->isoc_tx_ep = NULL; 827 data->isoc_rx_ep = NULL; 828 829 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { 830 ep_desc = &intf->cur_altsetting->endpoint[i].desc; 831 832 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) { 833 data->isoc_tx_ep = ep_desc; 834 continue; 835 } 836 837 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) { 838 data->isoc_rx_ep = ep_desc; 839 continue; 840 } 841 } 842 843 if (!data->isoc_tx_ep || !data->isoc_rx_ep) { 844 BT_ERR("%s invalid SCO descriptors", hdev->name); 845 return -ENODEV; 846 } 847 848 return 0; 849 } 850 851 static void btusb_work(struct work_struct *work) 852 { 853 struct btusb_data *data = container_of(work, struct btusb_data, work); 854 struct hci_dev *hdev = data->hdev; 855 int err; 856 857 if (hdev->conn_hash.sco_num > 0) { 858 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) { 859 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf); 860 if (err < 0) { 861 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 862 usb_kill_anchored_urbs(&data->isoc_anchor); 863 return; 864 } 865 866 set_bit(BTUSB_DID_ISO_RESUME, &data->flags); 867 } 868 if (data->isoc_altsetting != 2) { 869 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 870 usb_kill_anchored_urbs(&data->isoc_anchor); 871 872 if (__set_isoc_interface(hdev, 2) < 0) 873 return; 874 } 875 876 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) { 877 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0) 878 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 879 else 880 btusb_submit_isoc_urb(hdev, GFP_KERNEL); 881 } 882 } else { 883 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 884 usb_kill_anchored_urbs(&data->isoc_anchor); 885 886 __set_isoc_interface(hdev, 0); 887 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags)) 888 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf); 889 } 890 } 891 892 static void btusb_waker(struct work_struct *work) 893 { 894 struct btusb_data *data = container_of(work, struct btusb_data, waker); 895 int err; 896 897 err = usb_autopm_get_interface(data->intf); 898 if (err < 0) 899 return; 900 901 usb_autopm_put_interface(data->intf); 902 } 903 904 static int btusb_probe(struct usb_interface *intf, 905 const struct usb_device_id *id) 906 { 907 struct usb_endpoint_descriptor *ep_desc; 908 struct btusb_data *data; 909 struct hci_dev *hdev; 910 int i, err; 911 912 BT_DBG("intf %p id %p", intf, id); 913 914 /* interface numbers are hardcoded in the spec */ 915 if (intf->cur_altsetting->desc.bInterfaceNumber != 0) 916 return -ENODEV; 917 918 if (!id->driver_info) { 919 const struct usb_device_id *match; 920 match = usb_match_id(intf, blacklist_table); 921 if (match) 922 id = match; 923 } 924 925 if (id->driver_info == BTUSB_IGNORE) 926 return -ENODEV; 927 928 if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER) 929 return -ENODEV; 930 931 if (ignore_csr && id->driver_info & BTUSB_CSR) 932 return -ENODEV; 933 934 if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER) 935 return -ENODEV; 936 937 if (id->driver_info & BTUSB_ATH3012) { 938 struct usb_device *udev = interface_to_usbdev(intf); 939 940 /* Old firmware would otherwise let ath3k driver load 941 * patch and sysconfig files */ 942 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001) 943 return -ENODEV; 944 } 945 946 data = kzalloc(sizeof(*data), GFP_KERNEL); 947 if (!data) 948 return -ENOMEM; 949 950 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { 951 ep_desc = &intf->cur_altsetting->endpoint[i].desc; 952 953 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) { 954 data->intr_ep = ep_desc; 955 continue; 956 } 957 958 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) { 959 data->bulk_tx_ep = ep_desc; 960 continue; 961 } 962 963 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) { 964 data->bulk_rx_ep = ep_desc; 965 continue; 966 } 967 } 968 969 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) { 970 kfree(data); 971 return -ENODEV; 972 } 973 974 data->cmdreq_type = USB_TYPE_CLASS; 975 976 data->udev = interface_to_usbdev(intf); 977 data->intf = intf; 978 979 spin_lock_init(&data->lock); 980 981 INIT_WORK(&data->work, btusb_work); 982 INIT_WORK(&data->waker, btusb_waker); 983 spin_lock_init(&data->txlock); 984 985 init_usb_anchor(&data->tx_anchor); 986 init_usb_anchor(&data->intr_anchor); 987 init_usb_anchor(&data->bulk_anchor); 988 init_usb_anchor(&data->isoc_anchor); 989 init_usb_anchor(&data->deferred); 990 991 hdev = hci_alloc_dev(); 992 if (!hdev) { 993 kfree(data); 994 return -ENOMEM; 995 } 996 997 hdev->bus = HCI_USB; 998 hdev->driver_data = data; 999 1000 data->hdev = hdev; 1001 1002 SET_HCIDEV_DEV(hdev, &intf->dev); 1003 1004 hdev->open = btusb_open; 1005 hdev->close = btusb_close; 1006 hdev->flush = btusb_flush; 1007 hdev->send = btusb_send_frame; 1008 hdev->destruct = btusb_destruct; 1009 hdev->notify = btusb_notify; 1010 1011 hdev->owner = THIS_MODULE; 1012 1013 /* Interface numbers are hardcoded in the specification */ 1014 data->isoc = usb_ifnum_to_if(data->udev, 1); 1015 1016 if (!reset) 1017 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks); 1018 1019 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) { 1020 if (!disable_scofix) 1021 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks); 1022 } 1023 1024 if (id->driver_info & BTUSB_BROKEN_ISOC) 1025 data->isoc = NULL; 1026 1027 if (id->driver_info & BTUSB_DIGIANSWER) { 1028 data->cmdreq_type = USB_TYPE_VENDOR; 1029 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks); 1030 } 1031 1032 if (id->driver_info & BTUSB_CSR) { 1033 struct usb_device *udev = data->udev; 1034 1035 /* Old firmware would otherwise execute USB reset */ 1036 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117) 1037 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks); 1038 } 1039 1040 if (id->driver_info & BTUSB_SNIFFER) { 1041 struct usb_device *udev = data->udev; 1042 1043 /* New sniffer firmware has crippled HCI interface */ 1044 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997) 1045 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks); 1046 1047 data->isoc = NULL; 1048 } 1049 1050 if (id->driver_info & BTUSB_BCM92035) { 1051 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 }; 1052 struct sk_buff *skb; 1053 1054 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL); 1055 if (skb) { 1056 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd)); 1057 skb_queue_tail(&hdev->driver_init, skb); 1058 } 1059 } 1060 1061 if (data->isoc) { 1062 err = usb_driver_claim_interface(&btusb_driver, 1063 data->isoc, data); 1064 if (err < 0) { 1065 hci_free_dev(hdev); 1066 kfree(data); 1067 return err; 1068 } 1069 } 1070 1071 err = hci_register_dev(hdev); 1072 if (err < 0) { 1073 hci_free_dev(hdev); 1074 kfree(data); 1075 return err; 1076 } 1077 1078 usb_set_intfdata(intf, data); 1079 1080 return 0; 1081 } 1082 1083 static void btusb_disconnect(struct usb_interface *intf) 1084 { 1085 struct btusb_data *data = usb_get_intfdata(intf); 1086 struct hci_dev *hdev; 1087 1088 BT_DBG("intf %p", intf); 1089 1090 if (!data) 1091 return; 1092 1093 hdev = data->hdev; 1094 1095 __hci_dev_hold(hdev); 1096 1097 usb_set_intfdata(data->intf, NULL); 1098 1099 if (data->isoc) 1100 usb_set_intfdata(data->isoc, NULL); 1101 1102 hci_unregister_dev(hdev); 1103 1104 if (intf == data->isoc) 1105 usb_driver_release_interface(&btusb_driver, data->intf); 1106 else if (data->isoc) 1107 usb_driver_release_interface(&btusb_driver, data->isoc); 1108 1109 __hci_dev_put(hdev); 1110 1111 hci_free_dev(hdev); 1112 } 1113 1114 #ifdef CONFIG_PM 1115 static int btusb_suspend(struct usb_interface *intf, pm_message_t message) 1116 { 1117 struct btusb_data *data = usb_get_intfdata(intf); 1118 1119 BT_DBG("intf %p", intf); 1120 1121 if (data->suspend_count++) 1122 return 0; 1123 1124 spin_lock_irq(&data->txlock); 1125 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) { 1126 set_bit(BTUSB_SUSPENDING, &data->flags); 1127 spin_unlock_irq(&data->txlock); 1128 } else { 1129 spin_unlock_irq(&data->txlock); 1130 data->suspend_count--; 1131 return -EBUSY; 1132 } 1133 1134 cancel_work_sync(&data->work); 1135 1136 btusb_stop_traffic(data); 1137 usb_kill_anchored_urbs(&data->tx_anchor); 1138 1139 return 0; 1140 } 1141 1142 static void play_deferred(struct btusb_data *data) 1143 { 1144 struct urb *urb; 1145 int err; 1146 1147 while ((urb = usb_get_from_anchor(&data->deferred))) { 1148 err = usb_submit_urb(urb, GFP_ATOMIC); 1149 if (err < 0) 1150 break; 1151 1152 data->tx_in_flight++; 1153 } 1154 usb_scuttle_anchored_urbs(&data->deferred); 1155 } 1156 1157 static int btusb_resume(struct usb_interface *intf) 1158 { 1159 struct btusb_data *data = usb_get_intfdata(intf); 1160 struct hci_dev *hdev = data->hdev; 1161 int err = 0; 1162 1163 BT_DBG("intf %p", intf); 1164 1165 if (--data->suspend_count) 1166 return 0; 1167 1168 if (!test_bit(HCI_RUNNING, &hdev->flags)) 1169 goto done; 1170 1171 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) { 1172 err = btusb_submit_intr_urb(hdev, GFP_NOIO); 1173 if (err < 0) { 1174 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 1175 goto failed; 1176 } 1177 } 1178 1179 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) { 1180 err = btusb_submit_bulk_urb(hdev, GFP_NOIO); 1181 if (err < 0) { 1182 clear_bit(BTUSB_BULK_RUNNING, &data->flags); 1183 goto failed; 1184 } 1185 1186 btusb_submit_bulk_urb(hdev, GFP_NOIO); 1187 } 1188 1189 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) { 1190 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0) 1191 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1192 else 1193 btusb_submit_isoc_urb(hdev, GFP_NOIO); 1194 } 1195 1196 spin_lock_irq(&data->txlock); 1197 play_deferred(data); 1198 clear_bit(BTUSB_SUSPENDING, &data->flags); 1199 spin_unlock_irq(&data->txlock); 1200 schedule_work(&data->work); 1201 1202 return 0; 1203 1204 failed: 1205 usb_scuttle_anchored_urbs(&data->deferred); 1206 done: 1207 spin_lock_irq(&data->txlock); 1208 clear_bit(BTUSB_SUSPENDING, &data->flags); 1209 spin_unlock_irq(&data->txlock); 1210 1211 return err; 1212 } 1213 #endif 1214 1215 static struct usb_driver btusb_driver = { 1216 .name = "btusb", 1217 .probe = btusb_probe, 1218 .disconnect = btusb_disconnect, 1219 #ifdef CONFIG_PM 1220 .suspend = btusb_suspend, 1221 .resume = btusb_resume, 1222 #endif 1223 .id_table = btusb_table, 1224 .supports_autosuspend = 1, 1225 }; 1226 1227 module_usb_driver(btusb_driver); 1228 1229 module_param(ignore_dga, bool, 0644); 1230 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001"); 1231 1232 module_param(ignore_csr, bool, 0644); 1233 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001"); 1234 1235 module_param(ignore_sniffer, bool, 0644); 1236 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002"); 1237 1238 module_param(disable_scofix, bool, 0644); 1239 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size"); 1240 1241 module_param(force_scofix, bool, 0644); 1242 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size"); 1243 1244 module_param(reset, bool, 0644); 1245 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization"); 1246 1247 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); 1248 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION); 1249 MODULE_VERSION(VERSION); 1250 MODULE_LICENSE("GPL"); 1251