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(0x0a5c, 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, 0x21e8) }, 107 { USB_DEVICE(0x0a5c, 0x21f3) }, 108 { USB_DEVICE(0x413c, 0x8197) }, 109 110 { } /* Terminating entry */ 111 }; 112 113 MODULE_DEVICE_TABLE(usb, btusb_table); 114 115 static struct usb_device_id blacklist_table[] = { 116 /* CSR BlueCore devices */ 117 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR }, 118 119 /* Broadcom BCM2033 without firmware */ 120 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE }, 121 122 /* Atheros 3011 with sflash firmware */ 123 { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE }, 124 { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE }, 125 { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE }, 126 { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE }, 127 128 /* Atheros AR9285 Malbec with sflash firmware */ 129 { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE }, 130 131 /* Atheros 3012 with sflash firmware */ 132 { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 }, 133 { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 }, 134 { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 }, 135 { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 }, 136 137 /* Atheros AR5BBU12 with sflash firmware */ 138 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE }, 139 140 /* Broadcom BCM2035 */ 141 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU }, 142 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU }, 143 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 }, 144 145 /* Broadcom BCM2045 */ 146 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU }, 147 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU }, 148 149 /* IBM/Lenovo ThinkPad with Broadcom chip */ 150 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU }, 151 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU }, 152 153 /* HP laptop with Broadcom chip */ 154 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU }, 155 156 /* Dell laptop with Broadcom chip */ 157 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU }, 158 159 /* Dell Wireless 370 and 410 devices */ 160 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU }, 161 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU }, 162 163 /* Belkin F8T012 and F8T013 devices */ 164 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU }, 165 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU }, 166 167 /* Asus WL-BTD202 device */ 168 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU }, 169 170 /* Kensington Bluetooth USB adapter */ 171 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU }, 172 173 /* RTX Telecom based adapters with buggy SCO support */ 174 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC }, 175 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC }, 176 177 /* CONWISE Technology based adapters with buggy SCO support */ 178 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC }, 179 180 /* Digianswer devices */ 181 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER }, 182 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE }, 183 184 /* CSR BlueCore Bluetooth Sniffer */ 185 { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER }, 186 187 /* Frontline ComProbe Bluetooth Sniffer */ 188 { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER }, 189 190 { } /* Terminating entry */ 191 }; 192 193 #define BTUSB_MAX_ISOC_FRAMES 10 194 195 #define BTUSB_INTR_RUNNING 0 196 #define BTUSB_BULK_RUNNING 1 197 #define BTUSB_ISOC_RUNNING 2 198 #define BTUSB_SUSPENDING 3 199 #define BTUSB_DID_ISO_RESUME 4 200 201 struct btusb_data { 202 struct hci_dev *hdev; 203 struct usb_device *udev; 204 struct usb_interface *intf; 205 struct usb_interface *isoc; 206 207 spinlock_t lock; 208 209 unsigned long flags; 210 211 struct work_struct work; 212 struct work_struct waker; 213 214 struct usb_anchor tx_anchor; 215 struct usb_anchor intr_anchor; 216 struct usb_anchor bulk_anchor; 217 struct usb_anchor isoc_anchor; 218 struct usb_anchor deferred; 219 int tx_in_flight; 220 spinlock_t txlock; 221 222 struct usb_endpoint_descriptor *intr_ep; 223 struct usb_endpoint_descriptor *bulk_tx_ep; 224 struct usb_endpoint_descriptor *bulk_rx_ep; 225 struct usb_endpoint_descriptor *isoc_tx_ep; 226 struct usb_endpoint_descriptor *isoc_rx_ep; 227 228 __u8 cmdreq_type; 229 230 unsigned int sco_num; 231 int isoc_altsetting; 232 int suspend_count; 233 }; 234 235 static int inc_tx(struct btusb_data *data) 236 { 237 unsigned long flags; 238 int rv; 239 240 spin_lock_irqsave(&data->txlock, flags); 241 rv = test_bit(BTUSB_SUSPENDING, &data->flags); 242 if (!rv) 243 data->tx_in_flight++; 244 spin_unlock_irqrestore(&data->txlock, flags); 245 246 return rv; 247 } 248 249 static void btusb_intr_complete(struct urb *urb) 250 { 251 struct hci_dev *hdev = urb->context; 252 struct btusb_data *data = hci_get_drvdata(hdev); 253 int err; 254 255 BT_DBG("%s urb %p status %d count %d", hdev->name, 256 urb, urb->status, urb->actual_length); 257 258 if (!test_bit(HCI_RUNNING, &hdev->flags)) 259 return; 260 261 if (urb->status == 0) { 262 hdev->stat.byte_rx += urb->actual_length; 263 264 if (hci_recv_fragment(hdev, HCI_EVENT_PKT, 265 urb->transfer_buffer, 266 urb->actual_length) < 0) { 267 BT_ERR("%s corrupted event packet", hdev->name); 268 hdev->stat.err_rx++; 269 } 270 } 271 272 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags)) 273 return; 274 275 usb_mark_last_busy(data->udev); 276 usb_anchor_urb(urb, &data->intr_anchor); 277 278 err = usb_submit_urb(urb, GFP_ATOMIC); 279 if (err < 0) { 280 /* -EPERM: urb is being killed; 281 * -ENODEV: device got disconnected */ 282 if (err != -EPERM && err != -ENODEV) 283 BT_ERR("%s urb %p failed to resubmit (%d)", 284 hdev->name, urb, -err); 285 usb_unanchor_urb(urb); 286 } 287 } 288 289 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags) 290 { 291 struct btusb_data *data = hci_get_drvdata(hdev); 292 struct urb *urb; 293 unsigned char *buf; 294 unsigned int pipe; 295 int err, size; 296 297 BT_DBG("%s", hdev->name); 298 299 if (!data->intr_ep) 300 return -ENODEV; 301 302 urb = usb_alloc_urb(0, mem_flags); 303 if (!urb) 304 return -ENOMEM; 305 306 size = le16_to_cpu(data->intr_ep->wMaxPacketSize); 307 308 buf = kmalloc(size, mem_flags); 309 if (!buf) { 310 usb_free_urb(urb); 311 return -ENOMEM; 312 } 313 314 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress); 315 316 usb_fill_int_urb(urb, data->udev, pipe, buf, size, 317 btusb_intr_complete, hdev, 318 data->intr_ep->bInterval); 319 320 urb->transfer_flags |= URB_FREE_BUFFER; 321 322 usb_anchor_urb(urb, &data->intr_anchor); 323 324 err = usb_submit_urb(urb, mem_flags); 325 if (err < 0) { 326 if (err != -EPERM && err != -ENODEV) 327 BT_ERR("%s urb %p submission failed (%d)", 328 hdev->name, urb, -err); 329 usb_unanchor_urb(urb); 330 } 331 332 usb_free_urb(urb); 333 334 return err; 335 } 336 337 static void btusb_bulk_complete(struct urb *urb) 338 { 339 struct hci_dev *hdev = urb->context; 340 struct btusb_data *data = hci_get_drvdata(hdev); 341 int err; 342 343 BT_DBG("%s urb %p status %d count %d", hdev->name, 344 urb, urb->status, urb->actual_length); 345 346 if (!test_bit(HCI_RUNNING, &hdev->flags)) 347 return; 348 349 if (urb->status == 0) { 350 hdev->stat.byte_rx += urb->actual_length; 351 352 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT, 353 urb->transfer_buffer, 354 urb->actual_length) < 0) { 355 BT_ERR("%s corrupted ACL packet", hdev->name); 356 hdev->stat.err_rx++; 357 } 358 } 359 360 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags)) 361 return; 362 363 usb_anchor_urb(urb, &data->bulk_anchor); 364 usb_mark_last_busy(data->udev); 365 366 err = usb_submit_urb(urb, GFP_ATOMIC); 367 if (err < 0) { 368 /* -EPERM: urb is being killed; 369 * -ENODEV: device got disconnected */ 370 if (err != -EPERM && err != -ENODEV) 371 BT_ERR("%s urb %p failed to resubmit (%d)", 372 hdev->name, urb, -err); 373 usb_unanchor_urb(urb); 374 } 375 } 376 377 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags) 378 { 379 struct btusb_data *data = hci_get_drvdata(hdev); 380 struct urb *urb; 381 unsigned char *buf; 382 unsigned int pipe; 383 int err, size = HCI_MAX_FRAME_SIZE; 384 385 BT_DBG("%s", hdev->name); 386 387 if (!data->bulk_rx_ep) 388 return -ENODEV; 389 390 urb = usb_alloc_urb(0, mem_flags); 391 if (!urb) 392 return -ENOMEM; 393 394 buf = kmalloc(size, mem_flags); 395 if (!buf) { 396 usb_free_urb(urb); 397 return -ENOMEM; 398 } 399 400 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress); 401 402 usb_fill_bulk_urb(urb, data->udev, pipe, 403 buf, size, btusb_bulk_complete, hdev); 404 405 urb->transfer_flags |= URB_FREE_BUFFER; 406 407 usb_mark_last_busy(data->udev); 408 usb_anchor_urb(urb, &data->bulk_anchor); 409 410 err = usb_submit_urb(urb, mem_flags); 411 if (err < 0) { 412 if (err != -EPERM && err != -ENODEV) 413 BT_ERR("%s urb %p submission failed (%d)", 414 hdev->name, urb, -err); 415 usb_unanchor_urb(urb); 416 } 417 418 usb_free_urb(urb); 419 420 return err; 421 } 422 423 static void btusb_isoc_complete(struct urb *urb) 424 { 425 struct hci_dev *hdev = urb->context; 426 struct btusb_data *data = hci_get_drvdata(hdev); 427 int i, err; 428 429 BT_DBG("%s urb %p status %d count %d", hdev->name, 430 urb, urb->status, urb->actual_length); 431 432 if (!test_bit(HCI_RUNNING, &hdev->flags)) 433 return; 434 435 if (urb->status == 0) { 436 for (i = 0; i < urb->number_of_packets; i++) { 437 unsigned int offset = urb->iso_frame_desc[i].offset; 438 unsigned int length = urb->iso_frame_desc[i].actual_length; 439 440 if (urb->iso_frame_desc[i].status) 441 continue; 442 443 hdev->stat.byte_rx += length; 444 445 if (hci_recv_fragment(hdev, HCI_SCODATA_PKT, 446 urb->transfer_buffer + offset, 447 length) < 0) { 448 BT_ERR("%s corrupted SCO packet", hdev->name); 449 hdev->stat.err_rx++; 450 } 451 } 452 } 453 454 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags)) 455 return; 456 457 usb_anchor_urb(urb, &data->isoc_anchor); 458 459 err = usb_submit_urb(urb, GFP_ATOMIC); 460 if (err < 0) { 461 /* -EPERM: urb is being killed; 462 * -ENODEV: device got disconnected */ 463 if (err != -EPERM && err != -ENODEV) 464 BT_ERR("%s urb %p failed to resubmit (%d)", 465 hdev->name, urb, -err); 466 usb_unanchor_urb(urb); 467 } 468 } 469 470 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu) 471 { 472 int i, offset = 0; 473 474 BT_DBG("len %d mtu %d", len, mtu); 475 476 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu; 477 i++, offset += mtu, len -= mtu) { 478 urb->iso_frame_desc[i].offset = offset; 479 urb->iso_frame_desc[i].length = mtu; 480 } 481 482 if (len && i < BTUSB_MAX_ISOC_FRAMES) { 483 urb->iso_frame_desc[i].offset = offset; 484 urb->iso_frame_desc[i].length = len; 485 i++; 486 } 487 488 urb->number_of_packets = i; 489 } 490 491 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags) 492 { 493 struct btusb_data *data = hci_get_drvdata(hdev); 494 struct urb *urb; 495 unsigned char *buf; 496 unsigned int pipe; 497 int err, size; 498 499 BT_DBG("%s", hdev->name); 500 501 if (!data->isoc_rx_ep) 502 return -ENODEV; 503 504 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags); 505 if (!urb) 506 return -ENOMEM; 507 508 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) * 509 BTUSB_MAX_ISOC_FRAMES; 510 511 buf = kmalloc(size, mem_flags); 512 if (!buf) { 513 usb_free_urb(urb); 514 return -ENOMEM; 515 } 516 517 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress); 518 519 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete, 520 hdev, data->isoc_rx_ep->bInterval); 521 522 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP; 523 524 __fill_isoc_descriptor(urb, size, 525 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize)); 526 527 usb_anchor_urb(urb, &data->isoc_anchor); 528 529 err = usb_submit_urb(urb, mem_flags); 530 if (err < 0) { 531 if (err != -EPERM && err != -ENODEV) 532 BT_ERR("%s urb %p submission failed (%d)", 533 hdev->name, urb, -err); 534 usb_unanchor_urb(urb); 535 } 536 537 usb_free_urb(urb); 538 539 return err; 540 } 541 542 static void btusb_tx_complete(struct urb *urb) 543 { 544 struct sk_buff *skb = urb->context; 545 struct hci_dev *hdev = (struct hci_dev *) skb->dev; 546 struct btusb_data *data = hci_get_drvdata(hdev); 547 548 BT_DBG("%s urb %p status %d count %d", hdev->name, 549 urb, urb->status, urb->actual_length); 550 551 if (!test_bit(HCI_RUNNING, &hdev->flags)) 552 goto done; 553 554 if (!urb->status) 555 hdev->stat.byte_tx += urb->transfer_buffer_length; 556 else 557 hdev->stat.err_tx++; 558 559 done: 560 spin_lock(&data->txlock); 561 data->tx_in_flight--; 562 spin_unlock(&data->txlock); 563 564 kfree(urb->setup_packet); 565 566 kfree_skb(skb); 567 } 568 569 static void btusb_isoc_tx_complete(struct urb *urb) 570 { 571 struct sk_buff *skb = urb->context; 572 struct hci_dev *hdev = (struct hci_dev *) skb->dev; 573 574 BT_DBG("%s urb %p status %d count %d", hdev->name, 575 urb, urb->status, urb->actual_length); 576 577 if (!test_bit(HCI_RUNNING, &hdev->flags)) 578 goto done; 579 580 if (!urb->status) 581 hdev->stat.byte_tx += urb->transfer_buffer_length; 582 else 583 hdev->stat.err_tx++; 584 585 done: 586 kfree(urb->setup_packet); 587 588 kfree_skb(skb); 589 } 590 591 static int btusb_open(struct hci_dev *hdev) 592 { 593 struct btusb_data *data = hci_get_drvdata(hdev); 594 int err; 595 596 BT_DBG("%s", hdev->name); 597 598 err = usb_autopm_get_interface(data->intf); 599 if (err < 0) 600 return err; 601 602 data->intf->needs_remote_wakeup = 1; 603 604 if (test_and_set_bit(HCI_RUNNING, &hdev->flags)) 605 goto done; 606 607 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags)) 608 goto done; 609 610 err = btusb_submit_intr_urb(hdev, GFP_KERNEL); 611 if (err < 0) 612 goto failed; 613 614 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL); 615 if (err < 0) { 616 usb_kill_anchored_urbs(&data->intr_anchor); 617 goto failed; 618 } 619 620 set_bit(BTUSB_BULK_RUNNING, &data->flags); 621 btusb_submit_bulk_urb(hdev, GFP_KERNEL); 622 623 done: 624 usb_autopm_put_interface(data->intf); 625 return 0; 626 627 failed: 628 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 629 clear_bit(HCI_RUNNING, &hdev->flags); 630 usb_autopm_put_interface(data->intf); 631 return err; 632 } 633 634 static void btusb_stop_traffic(struct btusb_data *data) 635 { 636 usb_kill_anchored_urbs(&data->intr_anchor); 637 usb_kill_anchored_urbs(&data->bulk_anchor); 638 usb_kill_anchored_urbs(&data->isoc_anchor); 639 } 640 641 static int btusb_close(struct hci_dev *hdev) 642 { 643 struct btusb_data *data = hci_get_drvdata(hdev); 644 int err; 645 646 BT_DBG("%s", hdev->name); 647 648 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags)) 649 return 0; 650 651 cancel_work_sync(&data->work); 652 cancel_work_sync(&data->waker); 653 654 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 655 clear_bit(BTUSB_BULK_RUNNING, &data->flags); 656 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 657 658 btusb_stop_traffic(data); 659 err = usb_autopm_get_interface(data->intf); 660 if (err < 0) 661 goto failed; 662 663 data->intf->needs_remote_wakeup = 0; 664 usb_autopm_put_interface(data->intf); 665 666 failed: 667 usb_scuttle_anchored_urbs(&data->deferred); 668 return 0; 669 } 670 671 static int btusb_flush(struct hci_dev *hdev) 672 { 673 struct btusb_data *data = hci_get_drvdata(hdev); 674 675 BT_DBG("%s", hdev->name); 676 677 usb_kill_anchored_urbs(&data->tx_anchor); 678 679 return 0; 680 } 681 682 static int btusb_send_frame(struct sk_buff *skb) 683 { 684 struct hci_dev *hdev = (struct hci_dev *) skb->dev; 685 struct btusb_data *data = hci_get_drvdata(hdev); 686 struct usb_ctrlrequest *dr; 687 struct urb *urb; 688 unsigned int pipe; 689 int err; 690 691 BT_DBG("%s", hdev->name); 692 693 if (!test_bit(HCI_RUNNING, &hdev->flags)) 694 return -EBUSY; 695 696 switch (bt_cb(skb)->pkt_type) { 697 case HCI_COMMAND_PKT: 698 urb = usb_alloc_urb(0, GFP_ATOMIC); 699 if (!urb) 700 return -ENOMEM; 701 702 dr = kmalloc(sizeof(*dr), GFP_ATOMIC); 703 if (!dr) { 704 usb_free_urb(urb); 705 return -ENOMEM; 706 } 707 708 dr->bRequestType = data->cmdreq_type; 709 dr->bRequest = 0; 710 dr->wIndex = 0; 711 dr->wValue = 0; 712 dr->wLength = __cpu_to_le16(skb->len); 713 714 pipe = usb_sndctrlpipe(data->udev, 0x00); 715 716 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr, 717 skb->data, skb->len, btusb_tx_complete, skb); 718 719 hdev->stat.cmd_tx++; 720 break; 721 722 case HCI_ACLDATA_PKT: 723 if (!data->bulk_tx_ep) 724 return -ENODEV; 725 726 urb = usb_alloc_urb(0, GFP_ATOMIC); 727 if (!urb) 728 return -ENOMEM; 729 730 pipe = usb_sndbulkpipe(data->udev, 731 data->bulk_tx_ep->bEndpointAddress); 732 733 usb_fill_bulk_urb(urb, data->udev, pipe, 734 skb->data, skb->len, btusb_tx_complete, skb); 735 736 hdev->stat.acl_tx++; 737 break; 738 739 case HCI_SCODATA_PKT: 740 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1) 741 return -ENODEV; 742 743 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC); 744 if (!urb) 745 return -ENOMEM; 746 747 pipe = usb_sndisocpipe(data->udev, 748 data->isoc_tx_ep->bEndpointAddress); 749 750 usb_fill_int_urb(urb, data->udev, pipe, 751 skb->data, skb->len, btusb_isoc_tx_complete, 752 skb, data->isoc_tx_ep->bInterval); 753 754 urb->transfer_flags = URB_ISO_ASAP; 755 756 __fill_isoc_descriptor(urb, skb->len, 757 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize)); 758 759 hdev->stat.sco_tx++; 760 goto skip_waking; 761 762 default: 763 return -EILSEQ; 764 } 765 766 err = inc_tx(data); 767 if (err) { 768 usb_anchor_urb(urb, &data->deferred); 769 schedule_work(&data->waker); 770 err = 0; 771 goto done; 772 } 773 774 skip_waking: 775 usb_anchor_urb(urb, &data->tx_anchor); 776 777 err = usb_submit_urb(urb, GFP_ATOMIC); 778 if (err < 0) { 779 if (err != -EPERM && err != -ENODEV) 780 BT_ERR("%s urb %p submission failed (%d)", 781 hdev->name, urb, -err); 782 kfree(urb->setup_packet); 783 usb_unanchor_urb(urb); 784 } else { 785 usb_mark_last_busy(data->udev); 786 } 787 788 done: 789 usb_free_urb(urb); 790 return err; 791 } 792 793 static void btusb_notify(struct hci_dev *hdev, unsigned int evt) 794 { 795 struct btusb_data *data = hci_get_drvdata(hdev); 796 797 BT_DBG("%s evt %d", hdev->name, evt); 798 799 if (hdev->conn_hash.sco_num != data->sco_num) { 800 data->sco_num = hdev->conn_hash.sco_num; 801 schedule_work(&data->work); 802 } 803 } 804 805 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting) 806 { 807 struct btusb_data *data = hci_get_drvdata(hdev); 808 struct usb_interface *intf = data->isoc; 809 struct usb_endpoint_descriptor *ep_desc; 810 int i, err; 811 812 if (!data->isoc) 813 return -ENODEV; 814 815 err = usb_set_interface(data->udev, 1, altsetting); 816 if (err < 0) { 817 BT_ERR("%s setting interface failed (%d)", hdev->name, -err); 818 return err; 819 } 820 821 data->isoc_altsetting = altsetting; 822 823 data->isoc_tx_ep = NULL; 824 data->isoc_rx_ep = NULL; 825 826 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { 827 ep_desc = &intf->cur_altsetting->endpoint[i].desc; 828 829 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) { 830 data->isoc_tx_ep = ep_desc; 831 continue; 832 } 833 834 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) { 835 data->isoc_rx_ep = ep_desc; 836 continue; 837 } 838 } 839 840 if (!data->isoc_tx_ep || !data->isoc_rx_ep) { 841 BT_ERR("%s invalid SCO descriptors", hdev->name); 842 return -ENODEV; 843 } 844 845 return 0; 846 } 847 848 static void btusb_work(struct work_struct *work) 849 { 850 struct btusb_data *data = container_of(work, struct btusb_data, work); 851 struct hci_dev *hdev = data->hdev; 852 int err; 853 854 if (hdev->conn_hash.sco_num > 0) { 855 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) { 856 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf); 857 if (err < 0) { 858 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 859 usb_kill_anchored_urbs(&data->isoc_anchor); 860 return; 861 } 862 863 set_bit(BTUSB_DID_ISO_RESUME, &data->flags); 864 } 865 if (data->isoc_altsetting != 2) { 866 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 867 usb_kill_anchored_urbs(&data->isoc_anchor); 868 869 if (__set_isoc_interface(hdev, 2) < 0) 870 return; 871 } 872 873 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) { 874 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0) 875 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 876 else 877 btusb_submit_isoc_urb(hdev, GFP_KERNEL); 878 } 879 } else { 880 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 881 usb_kill_anchored_urbs(&data->isoc_anchor); 882 883 __set_isoc_interface(hdev, 0); 884 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags)) 885 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf); 886 } 887 } 888 889 static void btusb_waker(struct work_struct *work) 890 { 891 struct btusb_data *data = container_of(work, struct btusb_data, waker); 892 int err; 893 894 err = usb_autopm_get_interface(data->intf); 895 if (err < 0) 896 return; 897 898 usb_autopm_put_interface(data->intf); 899 } 900 901 static int btusb_probe(struct usb_interface *intf, 902 const struct usb_device_id *id) 903 { 904 struct usb_endpoint_descriptor *ep_desc; 905 struct btusb_data *data; 906 struct hci_dev *hdev; 907 int i, err; 908 909 BT_DBG("intf %p id %p", intf, id); 910 911 /* interface numbers are hardcoded in the spec */ 912 if (intf->cur_altsetting->desc.bInterfaceNumber != 0) 913 return -ENODEV; 914 915 if (!id->driver_info) { 916 const struct usb_device_id *match; 917 match = usb_match_id(intf, blacklist_table); 918 if (match) 919 id = match; 920 } 921 922 if (id->driver_info == BTUSB_IGNORE) 923 return -ENODEV; 924 925 if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER) 926 return -ENODEV; 927 928 if (ignore_csr && id->driver_info & BTUSB_CSR) 929 return -ENODEV; 930 931 if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER) 932 return -ENODEV; 933 934 if (id->driver_info & BTUSB_ATH3012) { 935 struct usb_device *udev = interface_to_usbdev(intf); 936 937 /* Old firmware would otherwise let ath3k driver load 938 * patch and sysconfig files */ 939 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001) 940 return -ENODEV; 941 } 942 943 data = kzalloc(sizeof(*data), GFP_KERNEL); 944 if (!data) 945 return -ENOMEM; 946 947 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { 948 ep_desc = &intf->cur_altsetting->endpoint[i].desc; 949 950 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) { 951 data->intr_ep = ep_desc; 952 continue; 953 } 954 955 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) { 956 data->bulk_tx_ep = ep_desc; 957 continue; 958 } 959 960 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) { 961 data->bulk_rx_ep = ep_desc; 962 continue; 963 } 964 } 965 966 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) { 967 kfree(data); 968 return -ENODEV; 969 } 970 971 data->cmdreq_type = USB_TYPE_CLASS; 972 973 data->udev = interface_to_usbdev(intf); 974 data->intf = intf; 975 976 spin_lock_init(&data->lock); 977 978 INIT_WORK(&data->work, btusb_work); 979 INIT_WORK(&data->waker, btusb_waker); 980 spin_lock_init(&data->txlock); 981 982 init_usb_anchor(&data->tx_anchor); 983 init_usb_anchor(&data->intr_anchor); 984 init_usb_anchor(&data->bulk_anchor); 985 init_usb_anchor(&data->isoc_anchor); 986 init_usb_anchor(&data->deferred); 987 988 hdev = hci_alloc_dev(); 989 if (!hdev) { 990 kfree(data); 991 return -ENOMEM; 992 } 993 994 hdev->bus = HCI_USB; 995 hci_set_drvdata(hdev, data); 996 997 data->hdev = hdev; 998 999 SET_HCIDEV_DEV(hdev, &intf->dev); 1000 1001 hdev->open = btusb_open; 1002 hdev->close = btusb_close; 1003 hdev->flush = btusb_flush; 1004 hdev->send = btusb_send_frame; 1005 hdev->notify = btusb_notify; 1006 1007 /* Interface numbers are hardcoded in the specification */ 1008 data->isoc = usb_ifnum_to_if(data->udev, 1); 1009 1010 if (!reset) 1011 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks); 1012 1013 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) { 1014 if (!disable_scofix) 1015 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks); 1016 } 1017 1018 if (id->driver_info & BTUSB_BROKEN_ISOC) 1019 data->isoc = NULL; 1020 1021 if (id->driver_info & BTUSB_DIGIANSWER) { 1022 data->cmdreq_type = USB_TYPE_VENDOR; 1023 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks); 1024 } 1025 1026 if (id->driver_info & BTUSB_CSR) { 1027 struct usb_device *udev = data->udev; 1028 1029 /* Old firmware would otherwise execute USB reset */ 1030 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117) 1031 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks); 1032 } 1033 1034 if (id->driver_info & BTUSB_SNIFFER) { 1035 struct usb_device *udev = data->udev; 1036 1037 /* New sniffer firmware has crippled HCI interface */ 1038 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997) 1039 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks); 1040 1041 data->isoc = NULL; 1042 } 1043 1044 if (id->driver_info & BTUSB_BCM92035) { 1045 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 }; 1046 struct sk_buff *skb; 1047 1048 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL); 1049 if (skb) { 1050 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd)); 1051 skb_queue_tail(&hdev->driver_init, skb); 1052 } 1053 } 1054 1055 if (data->isoc) { 1056 err = usb_driver_claim_interface(&btusb_driver, 1057 data->isoc, data); 1058 if (err < 0) { 1059 hci_free_dev(hdev); 1060 kfree(data); 1061 return err; 1062 } 1063 } 1064 1065 err = hci_register_dev(hdev); 1066 if (err < 0) { 1067 hci_free_dev(hdev); 1068 kfree(data); 1069 return err; 1070 } 1071 1072 usb_set_intfdata(intf, data); 1073 1074 return 0; 1075 } 1076 1077 static void btusb_disconnect(struct usb_interface *intf) 1078 { 1079 struct btusb_data *data = usb_get_intfdata(intf); 1080 struct hci_dev *hdev; 1081 1082 BT_DBG("intf %p", intf); 1083 1084 if (!data) 1085 return; 1086 1087 hdev = data->hdev; 1088 usb_set_intfdata(data->intf, NULL); 1089 1090 if (data->isoc) 1091 usb_set_intfdata(data->isoc, NULL); 1092 1093 hci_unregister_dev(hdev); 1094 1095 if (intf == data->isoc) 1096 usb_driver_release_interface(&btusb_driver, data->intf); 1097 else if (data->isoc) 1098 usb_driver_release_interface(&btusb_driver, data->isoc); 1099 1100 hci_free_dev(hdev); 1101 kfree(data); 1102 } 1103 1104 #ifdef CONFIG_PM 1105 static int btusb_suspend(struct usb_interface *intf, pm_message_t message) 1106 { 1107 struct btusb_data *data = usb_get_intfdata(intf); 1108 1109 BT_DBG("intf %p", intf); 1110 1111 if (data->suspend_count++) 1112 return 0; 1113 1114 spin_lock_irq(&data->txlock); 1115 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) { 1116 set_bit(BTUSB_SUSPENDING, &data->flags); 1117 spin_unlock_irq(&data->txlock); 1118 } else { 1119 spin_unlock_irq(&data->txlock); 1120 data->suspend_count--; 1121 return -EBUSY; 1122 } 1123 1124 cancel_work_sync(&data->work); 1125 1126 btusb_stop_traffic(data); 1127 usb_kill_anchored_urbs(&data->tx_anchor); 1128 1129 return 0; 1130 } 1131 1132 static void play_deferred(struct btusb_data *data) 1133 { 1134 struct urb *urb; 1135 int err; 1136 1137 while ((urb = usb_get_from_anchor(&data->deferred))) { 1138 err = usb_submit_urb(urb, GFP_ATOMIC); 1139 if (err < 0) 1140 break; 1141 1142 data->tx_in_flight++; 1143 } 1144 usb_scuttle_anchored_urbs(&data->deferred); 1145 } 1146 1147 static int btusb_resume(struct usb_interface *intf) 1148 { 1149 struct btusb_data *data = usb_get_intfdata(intf); 1150 struct hci_dev *hdev = data->hdev; 1151 int err = 0; 1152 1153 BT_DBG("intf %p", intf); 1154 1155 if (--data->suspend_count) 1156 return 0; 1157 1158 if (!test_bit(HCI_RUNNING, &hdev->flags)) 1159 goto done; 1160 1161 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) { 1162 err = btusb_submit_intr_urb(hdev, GFP_NOIO); 1163 if (err < 0) { 1164 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 1165 goto failed; 1166 } 1167 } 1168 1169 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) { 1170 err = btusb_submit_bulk_urb(hdev, GFP_NOIO); 1171 if (err < 0) { 1172 clear_bit(BTUSB_BULK_RUNNING, &data->flags); 1173 goto failed; 1174 } 1175 1176 btusb_submit_bulk_urb(hdev, GFP_NOIO); 1177 } 1178 1179 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) { 1180 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0) 1181 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1182 else 1183 btusb_submit_isoc_urb(hdev, GFP_NOIO); 1184 } 1185 1186 spin_lock_irq(&data->txlock); 1187 play_deferred(data); 1188 clear_bit(BTUSB_SUSPENDING, &data->flags); 1189 spin_unlock_irq(&data->txlock); 1190 schedule_work(&data->work); 1191 1192 return 0; 1193 1194 failed: 1195 usb_scuttle_anchored_urbs(&data->deferred); 1196 done: 1197 spin_lock_irq(&data->txlock); 1198 clear_bit(BTUSB_SUSPENDING, &data->flags); 1199 spin_unlock_irq(&data->txlock); 1200 1201 return err; 1202 } 1203 #endif 1204 1205 static struct usb_driver btusb_driver = { 1206 .name = "btusb", 1207 .probe = btusb_probe, 1208 .disconnect = btusb_disconnect, 1209 #ifdef CONFIG_PM 1210 .suspend = btusb_suspend, 1211 .resume = btusb_resume, 1212 #endif 1213 .id_table = btusb_table, 1214 .supports_autosuspend = 1, 1215 }; 1216 1217 module_usb_driver(btusb_driver); 1218 1219 module_param(ignore_dga, bool, 0644); 1220 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001"); 1221 1222 module_param(ignore_csr, bool, 0644); 1223 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001"); 1224 1225 module_param(ignore_sniffer, bool, 0644); 1226 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002"); 1227 1228 module_param(disable_scofix, bool, 0644); 1229 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size"); 1230 1231 module_param(force_scofix, bool, 0644); 1232 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size"); 1233 1234 module_param(reset, bool, 0644); 1235 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization"); 1236 1237 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); 1238 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION); 1239 MODULE_VERSION(VERSION); 1240 MODULE_LICENSE("GPL"); 1241