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, 0x21e6) }, 106 { USB_DEVICE(0x0a5c, 0x21f3) }, 107 { USB_DEVICE(0x413c, 0x8197) }, 108 109 { } /* Terminating entry */ 110 }; 111 112 MODULE_DEVICE_TABLE(usb, btusb_table); 113 114 static struct usb_device_id blacklist_table[] = { 115 /* CSR BlueCore devices */ 116 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR }, 117 118 /* Broadcom BCM2033 without firmware */ 119 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE }, 120 121 /* Atheros 3011 with sflash firmware */ 122 { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE }, 123 { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE }, 124 { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE }, 125 { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE }, 126 127 /* Atheros AR9285 Malbec with sflash firmware */ 128 { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE }, 129 130 /* Atheros 3012 with sflash firmware */ 131 { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 }, 132 { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 }, 133 134 /* Atheros AR5BBU12 with sflash firmware */ 135 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE }, 136 137 /* Broadcom BCM2035 */ 138 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU }, 139 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU }, 140 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 }, 141 142 /* Broadcom BCM2045 */ 143 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU }, 144 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU }, 145 146 /* IBM/Lenovo ThinkPad with Broadcom chip */ 147 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU }, 148 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU }, 149 150 /* HP laptop with Broadcom chip */ 151 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU }, 152 153 /* Dell laptop with Broadcom chip */ 154 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU }, 155 156 /* Dell Wireless 370 and 410 devices */ 157 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU }, 158 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU }, 159 160 /* Belkin F8T012 and F8T013 devices */ 161 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU }, 162 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU }, 163 164 /* Asus WL-BTD202 device */ 165 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU }, 166 167 /* Kensington Bluetooth USB adapter */ 168 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU }, 169 170 /* RTX Telecom based adapters with buggy SCO support */ 171 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC }, 172 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC }, 173 174 /* CONWISE Technology based adapters with buggy SCO support */ 175 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC }, 176 177 /* Digianswer devices */ 178 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER }, 179 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE }, 180 181 /* CSR BlueCore Bluetooth Sniffer */ 182 { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER }, 183 184 /* Frontline ComProbe Bluetooth Sniffer */ 185 { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER }, 186 187 { } /* Terminating entry */ 188 }; 189 190 #define BTUSB_MAX_ISOC_FRAMES 10 191 192 #define BTUSB_INTR_RUNNING 0 193 #define BTUSB_BULK_RUNNING 1 194 #define BTUSB_ISOC_RUNNING 2 195 #define BTUSB_SUSPENDING 3 196 #define BTUSB_DID_ISO_RESUME 4 197 198 struct btusb_data { 199 struct hci_dev *hdev; 200 struct usb_device *udev; 201 struct usb_interface *intf; 202 struct usb_interface *isoc; 203 204 spinlock_t lock; 205 206 unsigned long flags; 207 208 struct work_struct work; 209 struct work_struct waker; 210 211 struct usb_anchor tx_anchor; 212 struct usb_anchor intr_anchor; 213 struct usb_anchor bulk_anchor; 214 struct usb_anchor isoc_anchor; 215 struct usb_anchor deferred; 216 int tx_in_flight; 217 spinlock_t txlock; 218 219 struct usb_endpoint_descriptor *intr_ep; 220 struct usb_endpoint_descriptor *bulk_tx_ep; 221 struct usb_endpoint_descriptor *bulk_rx_ep; 222 struct usb_endpoint_descriptor *isoc_tx_ep; 223 struct usb_endpoint_descriptor *isoc_rx_ep; 224 225 __u8 cmdreq_type; 226 227 unsigned int sco_num; 228 int isoc_altsetting; 229 int suspend_count; 230 }; 231 232 static int inc_tx(struct btusb_data *data) 233 { 234 unsigned long flags; 235 int rv; 236 237 spin_lock_irqsave(&data->txlock, flags); 238 rv = test_bit(BTUSB_SUSPENDING, &data->flags); 239 if (!rv) 240 data->tx_in_flight++; 241 spin_unlock_irqrestore(&data->txlock, flags); 242 243 return rv; 244 } 245 246 static void btusb_intr_complete(struct urb *urb) 247 { 248 struct hci_dev *hdev = urb->context; 249 struct btusb_data *data = hci_get_drvdata(hdev); 250 int err; 251 252 BT_DBG("%s urb %p status %d count %d", hdev->name, 253 urb, urb->status, urb->actual_length); 254 255 if (!test_bit(HCI_RUNNING, &hdev->flags)) 256 return; 257 258 if (urb->status == 0) { 259 hdev->stat.byte_rx += urb->actual_length; 260 261 if (hci_recv_fragment(hdev, HCI_EVENT_PKT, 262 urb->transfer_buffer, 263 urb->actual_length) < 0) { 264 BT_ERR("%s corrupted event packet", hdev->name); 265 hdev->stat.err_rx++; 266 } 267 } 268 269 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags)) 270 return; 271 272 usb_mark_last_busy(data->udev); 273 usb_anchor_urb(urb, &data->intr_anchor); 274 275 err = usb_submit_urb(urb, GFP_ATOMIC); 276 if (err < 0) { 277 /* -EPERM: urb is being killed; 278 * -ENODEV: device got disconnected */ 279 if (err != -EPERM && err != -ENODEV) 280 BT_ERR("%s urb %p failed to resubmit (%d)", 281 hdev->name, urb, -err); 282 usb_unanchor_urb(urb); 283 } 284 } 285 286 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags) 287 { 288 struct btusb_data *data = hci_get_drvdata(hdev); 289 struct urb *urb; 290 unsigned char *buf; 291 unsigned int pipe; 292 int err, size; 293 294 BT_DBG("%s", hdev->name); 295 296 if (!data->intr_ep) 297 return -ENODEV; 298 299 urb = usb_alloc_urb(0, mem_flags); 300 if (!urb) 301 return -ENOMEM; 302 303 size = le16_to_cpu(data->intr_ep->wMaxPacketSize); 304 305 buf = kmalloc(size, mem_flags); 306 if (!buf) { 307 usb_free_urb(urb); 308 return -ENOMEM; 309 } 310 311 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress); 312 313 usb_fill_int_urb(urb, data->udev, pipe, buf, size, 314 btusb_intr_complete, hdev, 315 data->intr_ep->bInterval); 316 317 urb->transfer_flags |= URB_FREE_BUFFER; 318 319 usb_anchor_urb(urb, &data->intr_anchor); 320 321 err = usb_submit_urb(urb, mem_flags); 322 if (err < 0) { 323 if (err != -EPERM && err != -ENODEV) 324 BT_ERR("%s urb %p submission failed (%d)", 325 hdev->name, urb, -err); 326 usb_unanchor_urb(urb); 327 } 328 329 usb_free_urb(urb); 330 331 return err; 332 } 333 334 static void btusb_bulk_complete(struct urb *urb) 335 { 336 struct hci_dev *hdev = urb->context; 337 struct btusb_data *data = hci_get_drvdata(hdev); 338 int err; 339 340 BT_DBG("%s urb %p status %d count %d", hdev->name, 341 urb, urb->status, urb->actual_length); 342 343 if (!test_bit(HCI_RUNNING, &hdev->flags)) 344 return; 345 346 if (urb->status == 0) { 347 hdev->stat.byte_rx += urb->actual_length; 348 349 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT, 350 urb->transfer_buffer, 351 urb->actual_length) < 0) { 352 BT_ERR("%s corrupted ACL packet", hdev->name); 353 hdev->stat.err_rx++; 354 } 355 } 356 357 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags)) 358 return; 359 360 usb_anchor_urb(urb, &data->bulk_anchor); 361 usb_mark_last_busy(data->udev); 362 363 err = usb_submit_urb(urb, GFP_ATOMIC); 364 if (err < 0) { 365 /* -EPERM: urb is being killed; 366 * -ENODEV: device got disconnected */ 367 if (err != -EPERM && err != -ENODEV) 368 BT_ERR("%s urb %p failed to resubmit (%d)", 369 hdev->name, urb, -err); 370 usb_unanchor_urb(urb); 371 } 372 } 373 374 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags) 375 { 376 struct btusb_data *data = hci_get_drvdata(hdev); 377 struct urb *urb; 378 unsigned char *buf; 379 unsigned int pipe; 380 int err, size = HCI_MAX_FRAME_SIZE; 381 382 BT_DBG("%s", hdev->name); 383 384 if (!data->bulk_rx_ep) 385 return -ENODEV; 386 387 urb = usb_alloc_urb(0, mem_flags); 388 if (!urb) 389 return -ENOMEM; 390 391 buf = kmalloc(size, mem_flags); 392 if (!buf) { 393 usb_free_urb(urb); 394 return -ENOMEM; 395 } 396 397 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress); 398 399 usb_fill_bulk_urb(urb, data->udev, pipe, 400 buf, size, btusb_bulk_complete, hdev); 401 402 urb->transfer_flags |= URB_FREE_BUFFER; 403 404 usb_mark_last_busy(data->udev); 405 usb_anchor_urb(urb, &data->bulk_anchor); 406 407 err = usb_submit_urb(urb, mem_flags); 408 if (err < 0) { 409 if (err != -EPERM && err != -ENODEV) 410 BT_ERR("%s urb %p submission failed (%d)", 411 hdev->name, urb, -err); 412 usb_unanchor_urb(urb); 413 } 414 415 usb_free_urb(urb); 416 417 return err; 418 } 419 420 static void btusb_isoc_complete(struct urb *urb) 421 { 422 struct hci_dev *hdev = urb->context; 423 struct btusb_data *data = hci_get_drvdata(hdev); 424 int i, err; 425 426 BT_DBG("%s urb %p status %d count %d", hdev->name, 427 urb, urb->status, urb->actual_length); 428 429 if (!test_bit(HCI_RUNNING, &hdev->flags)) 430 return; 431 432 if (urb->status == 0) { 433 for (i = 0; i < urb->number_of_packets; i++) { 434 unsigned int offset = urb->iso_frame_desc[i].offset; 435 unsigned int length = urb->iso_frame_desc[i].actual_length; 436 437 if (urb->iso_frame_desc[i].status) 438 continue; 439 440 hdev->stat.byte_rx += length; 441 442 if (hci_recv_fragment(hdev, HCI_SCODATA_PKT, 443 urb->transfer_buffer + offset, 444 length) < 0) { 445 BT_ERR("%s corrupted SCO packet", hdev->name); 446 hdev->stat.err_rx++; 447 } 448 } 449 } 450 451 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags)) 452 return; 453 454 usb_anchor_urb(urb, &data->isoc_anchor); 455 456 err = usb_submit_urb(urb, GFP_ATOMIC); 457 if (err < 0) { 458 /* -EPERM: urb is being killed; 459 * -ENODEV: device got disconnected */ 460 if (err != -EPERM && err != -ENODEV) 461 BT_ERR("%s urb %p failed to resubmit (%d)", 462 hdev->name, urb, -err); 463 usb_unanchor_urb(urb); 464 } 465 } 466 467 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu) 468 { 469 int i, offset = 0; 470 471 BT_DBG("len %d mtu %d", len, mtu); 472 473 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu; 474 i++, offset += mtu, len -= mtu) { 475 urb->iso_frame_desc[i].offset = offset; 476 urb->iso_frame_desc[i].length = mtu; 477 } 478 479 if (len && i < BTUSB_MAX_ISOC_FRAMES) { 480 urb->iso_frame_desc[i].offset = offset; 481 urb->iso_frame_desc[i].length = len; 482 i++; 483 } 484 485 urb->number_of_packets = i; 486 } 487 488 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags) 489 { 490 struct btusb_data *data = hci_get_drvdata(hdev); 491 struct urb *urb; 492 unsigned char *buf; 493 unsigned int pipe; 494 int err, size; 495 496 BT_DBG("%s", hdev->name); 497 498 if (!data->isoc_rx_ep) 499 return -ENODEV; 500 501 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags); 502 if (!urb) 503 return -ENOMEM; 504 505 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) * 506 BTUSB_MAX_ISOC_FRAMES; 507 508 buf = kmalloc(size, mem_flags); 509 if (!buf) { 510 usb_free_urb(urb); 511 return -ENOMEM; 512 } 513 514 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress); 515 516 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete, 517 hdev, data->isoc_rx_ep->bInterval); 518 519 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP; 520 521 __fill_isoc_descriptor(urb, size, 522 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize)); 523 524 usb_anchor_urb(urb, &data->isoc_anchor); 525 526 err = usb_submit_urb(urb, mem_flags); 527 if (err < 0) { 528 if (err != -EPERM && err != -ENODEV) 529 BT_ERR("%s urb %p submission failed (%d)", 530 hdev->name, urb, -err); 531 usb_unanchor_urb(urb); 532 } 533 534 usb_free_urb(urb); 535 536 return err; 537 } 538 539 static void btusb_tx_complete(struct urb *urb) 540 { 541 struct sk_buff *skb = urb->context; 542 struct hci_dev *hdev = (struct hci_dev *) skb->dev; 543 struct btusb_data *data = hci_get_drvdata(hdev); 544 545 BT_DBG("%s urb %p status %d count %d", hdev->name, 546 urb, urb->status, urb->actual_length); 547 548 if (!test_bit(HCI_RUNNING, &hdev->flags)) 549 goto done; 550 551 if (!urb->status) 552 hdev->stat.byte_tx += urb->transfer_buffer_length; 553 else 554 hdev->stat.err_tx++; 555 556 done: 557 spin_lock(&data->txlock); 558 data->tx_in_flight--; 559 spin_unlock(&data->txlock); 560 561 kfree(urb->setup_packet); 562 563 kfree_skb(skb); 564 } 565 566 static void btusb_isoc_tx_complete(struct urb *urb) 567 { 568 struct sk_buff *skb = urb->context; 569 struct hci_dev *hdev = (struct hci_dev *) skb->dev; 570 571 BT_DBG("%s urb %p status %d count %d", hdev->name, 572 urb, urb->status, urb->actual_length); 573 574 if (!test_bit(HCI_RUNNING, &hdev->flags)) 575 goto done; 576 577 if (!urb->status) 578 hdev->stat.byte_tx += urb->transfer_buffer_length; 579 else 580 hdev->stat.err_tx++; 581 582 done: 583 kfree(urb->setup_packet); 584 585 kfree_skb(skb); 586 } 587 588 static int btusb_open(struct hci_dev *hdev) 589 { 590 struct btusb_data *data = hci_get_drvdata(hdev); 591 int err; 592 593 BT_DBG("%s", hdev->name); 594 595 err = usb_autopm_get_interface(data->intf); 596 if (err < 0) 597 return err; 598 599 data->intf->needs_remote_wakeup = 1; 600 601 if (test_and_set_bit(HCI_RUNNING, &hdev->flags)) 602 goto done; 603 604 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags)) 605 goto done; 606 607 err = btusb_submit_intr_urb(hdev, GFP_KERNEL); 608 if (err < 0) 609 goto failed; 610 611 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL); 612 if (err < 0) { 613 usb_kill_anchored_urbs(&data->intr_anchor); 614 goto failed; 615 } 616 617 set_bit(BTUSB_BULK_RUNNING, &data->flags); 618 btusb_submit_bulk_urb(hdev, GFP_KERNEL); 619 620 done: 621 usb_autopm_put_interface(data->intf); 622 return 0; 623 624 failed: 625 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 626 clear_bit(HCI_RUNNING, &hdev->flags); 627 usb_autopm_put_interface(data->intf); 628 return err; 629 } 630 631 static void btusb_stop_traffic(struct btusb_data *data) 632 { 633 usb_kill_anchored_urbs(&data->intr_anchor); 634 usb_kill_anchored_urbs(&data->bulk_anchor); 635 usb_kill_anchored_urbs(&data->isoc_anchor); 636 } 637 638 static int btusb_close(struct hci_dev *hdev) 639 { 640 struct btusb_data *data = hci_get_drvdata(hdev); 641 int err; 642 643 BT_DBG("%s", hdev->name); 644 645 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags)) 646 return 0; 647 648 cancel_work_sync(&data->work); 649 cancel_work_sync(&data->waker); 650 651 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 652 clear_bit(BTUSB_BULK_RUNNING, &data->flags); 653 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 654 655 btusb_stop_traffic(data); 656 err = usb_autopm_get_interface(data->intf); 657 if (err < 0) 658 goto failed; 659 660 data->intf->needs_remote_wakeup = 0; 661 usb_autopm_put_interface(data->intf); 662 663 failed: 664 usb_scuttle_anchored_urbs(&data->deferred); 665 return 0; 666 } 667 668 static int btusb_flush(struct hci_dev *hdev) 669 { 670 struct btusb_data *data = hci_get_drvdata(hdev); 671 672 BT_DBG("%s", hdev->name); 673 674 usb_kill_anchored_urbs(&data->tx_anchor); 675 676 return 0; 677 } 678 679 static int btusb_send_frame(struct sk_buff *skb) 680 { 681 struct hci_dev *hdev = (struct hci_dev *) skb->dev; 682 struct btusb_data *data = hci_get_drvdata(hdev); 683 struct usb_ctrlrequest *dr; 684 struct urb *urb; 685 unsigned int pipe; 686 int err; 687 688 BT_DBG("%s", hdev->name); 689 690 if (!test_bit(HCI_RUNNING, &hdev->flags)) 691 return -EBUSY; 692 693 switch (bt_cb(skb)->pkt_type) { 694 case HCI_COMMAND_PKT: 695 urb = usb_alloc_urb(0, GFP_ATOMIC); 696 if (!urb) 697 return -ENOMEM; 698 699 dr = kmalloc(sizeof(*dr), GFP_ATOMIC); 700 if (!dr) { 701 usb_free_urb(urb); 702 return -ENOMEM; 703 } 704 705 dr->bRequestType = data->cmdreq_type; 706 dr->bRequest = 0; 707 dr->wIndex = 0; 708 dr->wValue = 0; 709 dr->wLength = __cpu_to_le16(skb->len); 710 711 pipe = usb_sndctrlpipe(data->udev, 0x00); 712 713 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr, 714 skb->data, skb->len, btusb_tx_complete, skb); 715 716 hdev->stat.cmd_tx++; 717 break; 718 719 case HCI_ACLDATA_PKT: 720 if (!data->bulk_tx_ep) 721 return -ENODEV; 722 723 urb = usb_alloc_urb(0, GFP_ATOMIC); 724 if (!urb) 725 return -ENOMEM; 726 727 pipe = usb_sndbulkpipe(data->udev, 728 data->bulk_tx_ep->bEndpointAddress); 729 730 usb_fill_bulk_urb(urb, data->udev, pipe, 731 skb->data, skb->len, btusb_tx_complete, skb); 732 733 hdev->stat.acl_tx++; 734 break; 735 736 case HCI_SCODATA_PKT: 737 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1) 738 return -ENODEV; 739 740 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC); 741 if (!urb) 742 return -ENOMEM; 743 744 pipe = usb_sndisocpipe(data->udev, 745 data->isoc_tx_ep->bEndpointAddress); 746 747 usb_fill_int_urb(urb, data->udev, pipe, 748 skb->data, skb->len, btusb_isoc_tx_complete, 749 skb, data->isoc_tx_ep->bInterval); 750 751 urb->transfer_flags = URB_ISO_ASAP; 752 753 __fill_isoc_descriptor(urb, skb->len, 754 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize)); 755 756 hdev->stat.sco_tx++; 757 goto skip_waking; 758 759 default: 760 return -EILSEQ; 761 } 762 763 err = inc_tx(data); 764 if (err) { 765 usb_anchor_urb(urb, &data->deferred); 766 schedule_work(&data->waker); 767 err = 0; 768 goto done; 769 } 770 771 skip_waking: 772 usb_anchor_urb(urb, &data->tx_anchor); 773 774 err = usb_submit_urb(urb, GFP_ATOMIC); 775 if (err < 0) { 776 if (err != -EPERM && err != -ENODEV) 777 BT_ERR("%s urb %p submission failed (%d)", 778 hdev->name, urb, -err); 779 kfree(urb->setup_packet); 780 usb_unanchor_urb(urb); 781 } else { 782 usb_mark_last_busy(data->udev); 783 } 784 785 done: 786 usb_free_urb(urb); 787 return err; 788 } 789 790 static void btusb_notify(struct hci_dev *hdev, unsigned int evt) 791 { 792 struct btusb_data *data = hci_get_drvdata(hdev); 793 794 BT_DBG("%s evt %d", hdev->name, evt); 795 796 if (hdev->conn_hash.sco_num != data->sco_num) { 797 data->sco_num = hdev->conn_hash.sco_num; 798 schedule_work(&data->work); 799 } 800 } 801 802 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting) 803 { 804 struct btusb_data *data = hci_get_drvdata(hdev); 805 struct usb_interface *intf = data->isoc; 806 struct usb_endpoint_descriptor *ep_desc; 807 int i, err; 808 809 if (!data->isoc) 810 return -ENODEV; 811 812 err = usb_set_interface(data->udev, 1, altsetting); 813 if (err < 0) { 814 BT_ERR("%s setting interface failed (%d)", hdev->name, -err); 815 return err; 816 } 817 818 data->isoc_altsetting = altsetting; 819 820 data->isoc_tx_ep = NULL; 821 data->isoc_rx_ep = NULL; 822 823 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { 824 ep_desc = &intf->cur_altsetting->endpoint[i].desc; 825 826 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) { 827 data->isoc_tx_ep = ep_desc; 828 continue; 829 } 830 831 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) { 832 data->isoc_rx_ep = ep_desc; 833 continue; 834 } 835 } 836 837 if (!data->isoc_tx_ep || !data->isoc_rx_ep) { 838 BT_ERR("%s invalid SCO descriptors", hdev->name); 839 return -ENODEV; 840 } 841 842 return 0; 843 } 844 845 static void btusb_work(struct work_struct *work) 846 { 847 struct btusb_data *data = container_of(work, struct btusb_data, work); 848 struct hci_dev *hdev = data->hdev; 849 int err; 850 851 if (hdev->conn_hash.sco_num > 0) { 852 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) { 853 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf); 854 if (err < 0) { 855 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 856 usb_kill_anchored_urbs(&data->isoc_anchor); 857 return; 858 } 859 860 set_bit(BTUSB_DID_ISO_RESUME, &data->flags); 861 } 862 if (data->isoc_altsetting != 2) { 863 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 864 usb_kill_anchored_urbs(&data->isoc_anchor); 865 866 if (__set_isoc_interface(hdev, 2) < 0) 867 return; 868 } 869 870 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) { 871 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0) 872 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 873 else 874 btusb_submit_isoc_urb(hdev, GFP_KERNEL); 875 } 876 } else { 877 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 878 usb_kill_anchored_urbs(&data->isoc_anchor); 879 880 __set_isoc_interface(hdev, 0); 881 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags)) 882 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf); 883 } 884 } 885 886 static void btusb_waker(struct work_struct *work) 887 { 888 struct btusb_data *data = container_of(work, struct btusb_data, waker); 889 int err; 890 891 err = usb_autopm_get_interface(data->intf); 892 if (err < 0) 893 return; 894 895 usb_autopm_put_interface(data->intf); 896 } 897 898 static int btusb_probe(struct usb_interface *intf, 899 const struct usb_device_id *id) 900 { 901 struct usb_endpoint_descriptor *ep_desc; 902 struct btusb_data *data; 903 struct hci_dev *hdev; 904 int i, err; 905 906 BT_DBG("intf %p id %p", intf, id); 907 908 /* interface numbers are hardcoded in the spec */ 909 if (intf->cur_altsetting->desc.bInterfaceNumber != 0) 910 return -ENODEV; 911 912 if (!id->driver_info) { 913 const struct usb_device_id *match; 914 match = usb_match_id(intf, blacklist_table); 915 if (match) 916 id = match; 917 } 918 919 if (id->driver_info == BTUSB_IGNORE) 920 return -ENODEV; 921 922 if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER) 923 return -ENODEV; 924 925 if (ignore_csr && id->driver_info & BTUSB_CSR) 926 return -ENODEV; 927 928 if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER) 929 return -ENODEV; 930 931 if (id->driver_info & BTUSB_ATH3012) { 932 struct usb_device *udev = interface_to_usbdev(intf); 933 934 /* Old firmware would otherwise let ath3k driver load 935 * patch and sysconfig files */ 936 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001) 937 return -ENODEV; 938 } 939 940 data = kzalloc(sizeof(*data), GFP_KERNEL); 941 if (!data) 942 return -ENOMEM; 943 944 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { 945 ep_desc = &intf->cur_altsetting->endpoint[i].desc; 946 947 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) { 948 data->intr_ep = ep_desc; 949 continue; 950 } 951 952 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) { 953 data->bulk_tx_ep = ep_desc; 954 continue; 955 } 956 957 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) { 958 data->bulk_rx_ep = ep_desc; 959 continue; 960 } 961 } 962 963 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) { 964 kfree(data); 965 return -ENODEV; 966 } 967 968 data->cmdreq_type = USB_TYPE_CLASS; 969 970 data->udev = interface_to_usbdev(intf); 971 data->intf = intf; 972 973 spin_lock_init(&data->lock); 974 975 INIT_WORK(&data->work, btusb_work); 976 INIT_WORK(&data->waker, btusb_waker); 977 spin_lock_init(&data->txlock); 978 979 init_usb_anchor(&data->tx_anchor); 980 init_usb_anchor(&data->intr_anchor); 981 init_usb_anchor(&data->bulk_anchor); 982 init_usb_anchor(&data->isoc_anchor); 983 init_usb_anchor(&data->deferred); 984 985 hdev = hci_alloc_dev(); 986 if (!hdev) { 987 kfree(data); 988 return -ENOMEM; 989 } 990 991 hdev->bus = HCI_USB; 992 hci_set_drvdata(hdev, data); 993 994 data->hdev = hdev; 995 996 SET_HCIDEV_DEV(hdev, &intf->dev); 997 998 hdev->open = btusb_open; 999 hdev->close = btusb_close; 1000 hdev->flush = btusb_flush; 1001 hdev->send = btusb_send_frame; 1002 hdev->notify = btusb_notify; 1003 1004 /* Interface numbers are hardcoded in the specification */ 1005 data->isoc = usb_ifnum_to_if(data->udev, 1); 1006 1007 if (!reset) 1008 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks); 1009 1010 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) { 1011 if (!disable_scofix) 1012 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks); 1013 } 1014 1015 if (id->driver_info & BTUSB_BROKEN_ISOC) 1016 data->isoc = NULL; 1017 1018 if (id->driver_info & BTUSB_DIGIANSWER) { 1019 data->cmdreq_type = USB_TYPE_VENDOR; 1020 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks); 1021 } 1022 1023 if (id->driver_info & BTUSB_CSR) { 1024 struct usb_device *udev = data->udev; 1025 1026 /* Old firmware would otherwise execute USB reset */ 1027 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117) 1028 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks); 1029 } 1030 1031 if (id->driver_info & BTUSB_SNIFFER) { 1032 struct usb_device *udev = data->udev; 1033 1034 /* New sniffer firmware has crippled HCI interface */ 1035 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997) 1036 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks); 1037 1038 data->isoc = NULL; 1039 } 1040 1041 if (id->driver_info & BTUSB_BCM92035) { 1042 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 }; 1043 struct sk_buff *skb; 1044 1045 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL); 1046 if (skb) { 1047 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd)); 1048 skb_queue_tail(&hdev->driver_init, skb); 1049 } 1050 } 1051 1052 if (data->isoc) { 1053 err = usb_driver_claim_interface(&btusb_driver, 1054 data->isoc, data); 1055 if (err < 0) { 1056 hci_free_dev(hdev); 1057 kfree(data); 1058 return err; 1059 } 1060 } 1061 1062 err = hci_register_dev(hdev); 1063 if (err < 0) { 1064 hci_free_dev(hdev); 1065 kfree(data); 1066 return err; 1067 } 1068 1069 usb_set_intfdata(intf, data); 1070 1071 return 0; 1072 } 1073 1074 static void btusb_disconnect(struct usb_interface *intf) 1075 { 1076 struct btusb_data *data = usb_get_intfdata(intf); 1077 struct hci_dev *hdev; 1078 1079 BT_DBG("intf %p", intf); 1080 1081 if (!data) 1082 return; 1083 1084 hdev = data->hdev; 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_free_dev(hdev); 1098 kfree(data); 1099 } 1100 1101 #ifdef CONFIG_PM 1102 static int btusb_suspend(struct usb_interface *intf, pm_message_t message) 1103 { 1104 struct btusb_data *data = usb_get_intfdata(intf); 1105 1106 BT_DBG("intf %p", intf); 1107 1108 if (data->suspend_count++) 1109 return 0; 1110 1111 spin_lock_irq(&data->txlock); 1112 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) { 1113 set_bit(BTUSB_SUSPENDING, &data->flags); 1114 spin_unlock_irq(&data->txlock); 1115 } else { 1116 spin_unlock_irq(&data->txlock); 1117 data->suspend_count--; 1118 return -EBUSY; 1119 } 1120 1121 cancel_work_sync(&data->work); 1122 1123 btusb_stop_traffic(data); 1124 usb_kill_anchored_urbs(&data->tx_anchor); 1125 1126 return 0; 1127 } 1128 1129 static void play_deferred(struct btusb_data *data) 1130 { 1131 struct urb *urb; 1132 int err; 1133 1134 while ((urb = usb_get_from_anchor(&data->deferred))) { 1135 err = usb_submit_urb(urb, GFP_ATOMIC); 1136 if (err < 0) 1137 break; 1138 1139 data->tx_in_flight++; 1140 } 1141 usb_scuttle_anchored_urbs(&data->deferred); 1142 } 1143 1144 static int btusb_resume(struct usb_interface *intf) 1145 { 1146 struct btusb_data *data = usb_get_intfdata(intf); 1147 struct hci_dev *hdev = data->hdev; 1148 int err = 0; 1149 1150 BT_DBG("intf %p", intf); 1151 1152 if (--data->suspend_count) 1153 return 0; 1154 1155 if (!test_bit(HCI_RUNNING, &hdev->flags)) 1156 goto done; 1157 1158 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) { 1159 err = btusb_submit_intr_urb(hdev, GFP_NOIO); 1160 if (err < 0) { 1161 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 1162 goto failed; 1163 } 1164 } 1165 1166 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) { 1167 err = btusb_submit_bulk_urb(hdev, GFP_NOIO); 1168 if (err < 0) { 1169 clear_bit(BTUSB_BULK_RUNNING, &data->flags); 1170 goto failed; 1171 } 1172 1173 btusb_submit_bulk_urb(hdev, GFP_NOIO); 1174 } 1175 1176 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) { 1177 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0) 1178 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1179 else 1180 btusb_submit_isoc_urb(hdev, GFP_NOIO); 1181 } 1182 1183 spin_lock_irq(&data->txlock); 1184 play_deferred(data); 1185 clear_bit(BTUSB_SUSPENDING, &data->flags); 1186 spin_unlock_irq(&data->txlock); 1187 schedule_work(&data->work); 1188 1189 return 0; 1190 1191 failed: 1192 usb_scuttle_anchored_urbs(&data->deferred); 1193 done: 1194 spin_lock_irq(&data->txlock); 1195 clear_bit(BTUSB_SUSPENDING, &data->flags); 1196 spin_unlock_irq(&data->txlock); 1197 1198 return err; 1199 } 1200 #endif 1201 1202 static struct usb_driver btusb_driver = { 1203 .name = "btusb", 1204 .probe = btusb_probe, 1205 .disconnect = btusb_disconnect, 1206 #ifdef CONFIG_PM 1207 .suspend = btusb_suspend, 1208 .resume = btusb_resume, 1209 #endif 1210 .id_table = btusb_table, 1211 .supports_autosuspend = 1, 1212 }; 1213 1214 module_usb_driver(btusb_driver); 1215 1216 module_param(ignore_dga, bool, 0644); 1217 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001"); 1218 1219 module_param(ignore_csr, bool, 0644); 1220 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001"); 1221 1222 module_param(ignore_sniffer, bool, 0644); 1223 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002"); 1224 1225 module_param(disable_scofix, bool, 0644); 1226 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size"); 1227 1228 module_param(force_scofix, bool, 0644); 1229 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size"); 1230 1231 module_param(reset, bool, 0644); 1232 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization"); 1233 1234 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); 1235 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION); 1236 MODULE_VERSION(VERSION); 1237 MODULE_LICENSE("GPL"); 1238