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/module.h> 25 #include <linux/usb.h> 26 27 #include <net/bluetooth/bluetooth.h> 28 #include <net/bluetooth/hci_core.h> 29 30 #define VERSION "0.6" 31 32 static bool ignore_dga; 33 static bool ignore_csr; 34 static bool ignore_sniffer; 35 static bool disable_scofix; 36 static bool force_scofix; 37 38 static bool reset = 1; 39 40 static struct usb_driver btusb_driver; 41 42 #define BTUSB_IGNORE 0x01 43 #define BTUSB_DIGIANSWER 0x02 44 #define BTUSB_CSR 0x04 45 #define BTUSB_SNIFFER 0x08 46 #define BTUSB_BCM92035 0x10 47 #define BTUSB_BROKEN_ISOC 0x20 48 #define BTUSB_WRONG_SCO_MTU 0x40 49 #define BTUSB_ATH3012 0x80 50 51 static struct usb_device_id btusb_table[] = { 52 /* Generic Bluetooth USB device */ 53 { USB_DEVICE_INFO(0xe0, 0x01, 0x01) }, 54 55 /* Broadcom SoftSailing reporting vendor specific */ 56 { USB_DEVICE(0x0a5c, 0x21e1) }, 57 58 /* Apple MacBookPro 7,1 */ 59 { USB_DEVICE(0x05ac, 0x8213) }, 60 61 /* Apple iMac11,1 */ 62 { USB_DEVICE(0x05ac, 0x8215) }, 63 64 /* Apple MacBookPro6,2 */ 65 { USB_DEVICE(0x05ac, 0x8218) }, 66 67 /* Apple MacBookAir3,1, MacBookAir3,2 */ 68 { USB_DEVICE(0x05ac, 0x821b) }, 69 70 /* Apple MacBookAir4,1 */ 71 { USB_DEVICE(0x05ac, 0x821f) }, 72 73 /* Apple MacBookPro8,2 */ 74 { USB_DEVICE(0x05ac, 0x821a) }, 75 76 /* Apple MacMini5,1 */ 77 { USB_DEVICE(0x05ac, 0x8281) }, 78 79 /* AVM BlueFRITZ! USB v2.0 */ 80 { USB_DEVICE(0x057c, 0x3800) }, 81 82 /* Bluetooth Ultraport Module from IBM */ 83 { USB_DEVICE(0x04bf, 0x030a) }, 84 85 /* ALPS Modules with non-standard id */ 86 { USB_DEVICE(0x044e, 0x3001) }, 87 { USB_DEVICE(0x044e, 0x3002) }, 88 89 /* Ericsson with non-standard id */ 90 { USB_DEVICE(0x0bdb, 0x1002) }, 91 92 /* Canyon CN-BTU1 with HID interfaces */ 93 { USB_DEVICE(0x0c10, 0x0000) }, 94 95 /* Broadcom BCM20702A0 */ 96 { USB_DEVICE(0x0489, 0xe042) }, 97 { USB_DEVICE(0x0a5c, 0x21e3) }, 98 { USB_DEVICE(0x0a5c, 0x21e6) }, 99 { USB_DEVICE(0x0a5c, 0x21e8) }, 100 { USB_DEVICE(0x0a5c, 0x21f3) }, 101 { USB_DEVICE(0x413c, 0x8197) }, 102 103 /* Foxconn - Hon Hai */ 104 { USB_DEVICE(0x0489, 0xe033) }, 105 106 { } /* Terminating entry */ 107 }; 108 109 MODULE_DEVICE_TABLE(usb, btusb_table); 110 111 static struct usb_device_id blacklist_table[] = { 112 /* CSR BlueCore devices */ 113 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR }, 114 115 /* Broadcom BCM2033 without firmware */ 116 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE }, 117 118 /* Atheros 3011 with sflash firmware */ 119 { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE }, 120 { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE }, 121 { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE }, 122 { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE }, 123 { USB_DEVICE(0x0489, 0xe03d), .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 { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 }, 131 { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 }, 132 { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 }, 133 { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 }, 134 { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 }, 135 { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 }, 136 137 /* Atheros AR5BBU12 with sflash firmware */ 138 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE }, 139 140 /* Atheros AR5BBU12 with sflash firmware */ 141 { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 }, 142 143 /* Broadcom BCM2035 */ 144 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU }, 145 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU }, 146 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 }, 147 148 /* Broadcom BCM2045 */ 149 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU }, 150 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU }, 151 152 /* IBM/Lenovo ThinkPad with Broadcom chip */ 153 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU }, 154 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU }, 155 156 /* HP laptop with Broadcom chip */ 157 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU }, 158 159 /* Dell laptop with Broadcom chip */ 160 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU }, 161 162 /* Dell Wireless 370 and 410 devices */ 163 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU }, 164 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU }, 165 166 /* Belkin F8T012 and F8T013 devices */ 167 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU }, 168 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU }, 169 170 /* Asus WL-BTD202 device */ 171 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU }, 172 173 /* Kensington Bluetooth USB adapter */ 174 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU }, 175 176 /* RTX Telecom based adapters with buggy SCO support */ 177 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC }, 178 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC }, 179 180 /* CONWISE Technology based adapters with buggy SCO support */ 181 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC }, 182 183 /* Digianswer devices */ 184 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER }, 185 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE }, 186 187 /* CSR BlueCore Bluetooth Sniffer */ 188 { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER }, 189 190 /* Frontline ComProbe Bluetooth Sniffer */ 191 { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER }, 192 193 { } /* Terminating entry */ 194 }; 195 196 #define BTUSB_MAX_ISOC_FRAMES 10 197 198 #define BTUSB_INTR_RUNNING 0 199 #define BTUSB_BULK_RUNNING 1 200 #define BTUSB_ISOC_RUNNING 2 201 #define BTUSB_SUSPENDING 3 202 #define BTUSB_DID_ISO_RESUME 4 203 204 struct btusb_data { 205 struct hci_dev *hdev; 206 struct usb_device *udev; 207 struct usb_interface *intf; 208 struct usb_interface *isoc; 209 210 spinlock_t lock; 211 212 unsigned long flags; 213 214 struct work_struct work; 215 struct work_struct waker; 216 217 struct usb_anchor tx_anchor; 218 struct usb_anchor intr_anchor; 219 struct usb_anchor bulk_anchor; 220 struct usb_anchor isoc_anchor; 221 struct usb_anchor deferred; 222 int tx_in_flight; 223 spinlock_t txlock; 224 225 struct usb_endpoint_descriptor *intr_ep; 226 struct usb_endpoint_descriptor *bulk_tx_ep; 227 struct usb_endpoint_descriptor *bulk_rx_ep; 228 struct usb_endpoint_descriptor *isoc_tx_ep; 229 struct usb_endpoint_descriptor *isoc_rx_ep; 230 231 __u8 cmdreq_type; 232 233 unsigned int sco_num; 234 int isoc_altsetting; 235 int suspend_count; 236 }; 237 238 static int inc_tx(struct btusb_data *data) 239 { 240 unsigned long flags; 241 int rv; 242 243 spin_lock_irqsave(&data->txlock, flags); 244 rv = test_bit(BTUSB_SUSPENDING, &data->flags); 245 if (!rv) 246 data->tx_in_flight++; 247 spin_unlock_irqrestore(&data->txlock, flags); 248 249 return rv; 250 } 251 252 static void btusb_intr_complete(struct urb *urb) 253 { 254 struct hci_dev *hdev = urb->context; 255 struct btusb_data *data = hci_get_drvdata(hdev); 256 int err; 257 258 BT_DBG("%s urb %p status %d count %d", hdev->name, 259 urb, urb->status, urb->actual_length); 260 261 if (!test_bit(HCI_RUNNING, &hdev->flags)) 262 return; 263 264 if (urb->status == 0) { 265 hdev->stat.byte_rx += urb->actual_length; 266 267 if (hci_recv_fragment(hdev, HCI_EVENT_PKT, 268 urb->transfer_buffer, 269 urb->actual_length) < 0) { 270 BT_ERR("%s corrupted event packet", hdev->name); 271 hdev->stat.err_rx++; 272 } 273 } 274 275 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags)) 276 return; 277 278 usb_mark_last_busy(data->udev); 279 usb_anchor_urb(urb, &data->intr_anchor); 280 281 err = usb_submit_urb(urb, GFP_ATOMIC); 282 if (err < 0) { 283 /* -EPERM: urb is being killed; 284 * -ENODEV: device got disconnected */ 285 if (err != -EPERM && err != -ENODEV) 286 BT_ERR("%s urb %p failed to resubmit (%d)", 287 hdev->name, urb, -err); 288 usb_unanchor_urb(urb); 289 } 290 } 291 292 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags) 293 { 294 struct btusb_data *data = hci_get_drvdata(hdev); 295 struct urb *urb; 296 unsigned char *buf; 297 unsigned int pipe; 298 int err, size; 299 300 BT_DBG("%s", hdev->name); 301 302 if (!data->intr_ep) 303 return -ENODEV; 304 305 urb = usb_alloc_urb(0, mem_flags); 306 if (!urb) 307 return -ENOMEM; 308 309 size = le16_to_cpu(data->intr_ep->wMaxPacketSize); 310 311 buf = kmalloc(size, mem_flags); 312 if (!buf) { 313 usb_free_urb(urb); 314 return -ENOMEM; 315 } 316 317 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress); 318 319 usb_fill_int_urb(urb, data->udev, pipe, buf, size, 320 btusb_intr_complete, hdev, 321 data->intr_ep->bInterval); 322 323 urb->transfer_flags |= URB_FREE_BUFFER; 324 325 usb_anchor_urb(urb, &data->intr_anchor); 326 327 err = usb_submit_urb(urb, mem_flags); 328 if (err < 0) { 329 if (err != -EPERM && err != -ENODEV) 330 BT_ERR("%s urb %p submission failed (%d)", 331 hdev->name, urb, -err); 332 usb_unanchor_urb(urb); 333 } 334 335 usb_free_urb(urb); 336 337 return err; 338 } 339 340 static void btusb_bulk_complete(struct urb *urb) 341 { 342 struct hci_dev *hdev = urb->context; 343 struct btusb_data *data = hci_get_drvdata(hdev); 344 int err; 345 346 BT_DBG("%s urb %p status %d count %d", hdev->name, 347 urb, urb->status, urb->actual_length); 348 349 if (!test_bit(HCI_RUNNING, &hdev->flags)) 350 return; 351 352 if (urb->status == 0) { 353 hdev->stat.byte_rx += urb->actual_length; 354 355 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT, 356 urb->transfer_buffer, 357 urb->actual_length) < 0) { 358 BT_ERR("%s corrupted ACL packet", hdev->name); 359 hdev->stat.err_rx++; 360 } 361 } 362 363 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags)) 364 return; 365 366 usb_anchor_urb(urb, &data->bulk_anchor); 367 usb_mark_last_busy(data->udev); 368 369 err = usb_submit_urb(urb, GFP_ATOMIC); 370 if (err < 0) { 371 /* -EPERM: urb is being killed; 372 * -ENODEV: device got disconnected */ 373 if (err != -EPERM && err != -ENODEV) 374 BT_ERR("%s urb %p failed to resubmit (%d)", 375 hdev->name, urb, -err); 376 usb_unanchor_urb(urb); 377 } 378 } 379 380 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags) 381 { 382 struct btusb_data *data = hci_get_drvdata(hdev); 383 struct urb *urb; 384 unsigned char *buf; 385 unsigned int pipe; 386 int err, size = HCI_MAX_FRAME_SIZE; 387 388 BT_DBG("%s", hdev->name); 389 390 if (!data->bulk_rx_ep) 391 return -ENODEV; 392 393 urb = usb_alloc_urb(0, mem_flags); 394 if (!urb) 395 return -ENOMEM; 396 397 buf = kmalloc(size, mem_flags); 398 if (!buf) { 399 usb_free_urb(urb); 400 return -ENOMEM; 401 } 402 403 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress); 404 405 usb_fill_bulk_urb(urb, data->udev, pipe, 406 buf, size, btusb_bulk_complete, hdev); 407 408 urb->transfer_flags |= URB_FREE_BUFFER; 409 410 usb_mark_last_busy(data->udev); 411 usb_anchor_urb(urb, &data->bulk_anchor); 412 413 err = usb_submit_urb(urb, mem_flags); 414 if (err < 0) { 415 if (err != -EPERM && err != -ENODEV) 416 BT_ERR("%s urb %p submission failed (%d)", 417 hdev->name, urb, -err); 418 usb_unanchor_urb(urb); 419 } 420 421 usb_free_urb(urb); 422 423 return err; 424 } 425 426 static void btusb_isoc_complete(struct urb *urb) 427 { 428 struct hci_dev *hdev = urb->context; 429 struct btusb_data *data = hci_get_drvdata(hdev); 430 int i, err; 431 432 BT_DBG("%s urb %p status %d count %d", hdev->name, 433 urb, urb->status, urb->actual_length); 434 435 if (!test_bit(HCI_RUNNING, &hdev->flags)) 436 return; 437 438 if (urb->status == 0) { 439 for (i = 0; i < urb->number_of_packets; i++) { 440 unsigned int offset = urb->iso_frame_desc[i].offset; 441 unsigned int length = urb->iso_frame_desc[i].actual_length; 442 443 if (urb->iso_frame_desc[i].status) 444 continue; 445 446 hdev->stat.byte_rx += length; 447 448 if (hci_recv_fragment(hdev, HCI_SCODATA_PKT, 449 urb->transfer_buffer + offset, 450 length) < 0) { 451 BT_ERR("%s corrupted SCO packet", hdev->name); 452 hdev->stat.err_rx++; 453 } 454 } 455 } 456 457 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags)) 458 return; 459 460 usb_anchor_urb(urb, &data->isoc_anchor); 461 462 err = usb_submit_urb(urb, GFP_ATOMIC); 463 if (err < 0) { 464 /* -EPERM: urb is being killed; 465 * -ENODEV: device got disconnected */ 466 if (err != -EPERM && err != -ENODEV) 467 BT_ERR("%s urb %p failed to resubmit (%d)", 468 hdev->name, urb, -err); 469 usb_unanchor_urb(urb); 470 } 471 } 472 473 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu) 474 { 475 int i, offset = 0; 476 477 BT_DBG("len %d mtu %d", len, mtu); 478 479 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu; 480 i++, offset += mtu, len -= mtu) { 481 urb->iso_frame_desc[i].offset = offset; 482 urb->iso_frame_desc[i].length = mtu; 483 } 484 485 if (len && i < BTUSB_MAX_ISOC_FRAMES) { 486 urb->iso_frame_desc[i].offset = offset; 487 urb->iso_frame_desc[i].length = len; 488 i++; 489 } 490 491 urb->number_of_packets = i; 492 } 493 494 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags) 495 { 496 struct btusb_data *data = hci_get_drvdata(hdev); 497 struct urb *urb; 498 unsigned char *buf; 499 unsigned int pipe; 500 int err, size; 501 502 BT_DBG("%s", hdev->name); 503 504 if (!data->isoc_rx_ep) 505 return -ENODEV; 506 507 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags); 508 if (!urb) 509 return -ENOMEM; 510 511 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) * 512 BTUSB_MAX_ISOC_FRAMES; 513 514 buf = kmalloc(size, mem_flags); 515 if (!buf) { 516 usb_free_urb(urb); 517 return -ENOMEM; 518 } 519 520 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress); 521 522 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete, 523 hdev, data->isoc_rx_ep->bInterval); 524 525 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP; 526 527 __fill_isoc_descriptor(urb, size, 528 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize)); 529 530 usb_anchor_urb(urb, &data->isoc_anchor); 531 532 err = usb_submit_urb(urb, mem_flags); 533 if (err < 0) { 534 if (err != -EPERM && err != -ENODEV) 535 BT_ERR("%s urb %p submission failed (%d)", 536 hdev->name, urb, -err); 537 usb_unanchor_urb(urb); 538 } 539 540 usb_free_urb(urb); 541 542 return err; 543 } 544 545 static void btusb_tx_complete(struct urb *urb) 546 { 547 struct sk_buff *skb = urb->context; 548 struct hci_dev *hdev = (struct hci_dev *) skb->dev; 549 struct btusb_data *data = hci_get_drvdata(hdev); 550 551 BT_DBG("%s urb %p status %d count %d", hdev->name, 552 urb, urb->status, urb->actual_length); 553 554 if (!test_bit(HCI_RUNNING, &hdev->flags)) 555 goto done; 556 557 if (!urb->status) 558 hdev->stat.byte_tx += urb->transfer_buffer_length; 559 else 560 hdev->stat.err_tx++; 561 562 done: 563 spin_lock(&data->txlock); 564 data->tx_in_flight--; 565 spin_unlock(&data->txlock); 566 567 kfree(urb->setup_packet); 568 569 kfree_skb(skb); 570 } 571 572 static void btusb_isoc_tx_complete(struct urb *urb) 573 { 574 struct sk_buff *skb = urb->context; 575 struct hci_dev *hdev = (struct hci_dev *) skb->dev; 576 577 BT_DBG("%s urb %p status %d count %d", hdev->name, 578 urb, urb->status, urb->actual_length); 579 580 if (!test_bit(HCI_RUNNING, &hdev->flags)) 581 goto done; 582 583 if (!urb->status) 584 hdev->stat.byte_tx += urb->transfer_buffer_length; 585 else 586 hdev->stat.err_tx++; 587 588 done: 589 kfree(urb->setup_packet); 590 591 kfree_skb(skb); 592 } 593 594 static int btusb_open(struct hci_dev *hdev) 595 { 596 struct btusb_data *data = hci_get_drvdata(hdev); 597 int err; 598 599 BT_DBG("%s", hdev->name); 600 601 err = usb_autopm_get_interface(data->intf); 602 if (err < 0) 603 return err; 604 605 data->intf->needs_remote_wakeup = 1; 606 607 if (test_and_set_bit(HCI_RUNNING, &hdev->flags)) 608 goto done; 609 610 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags)) 611 goto done; 612 613 err = btusb_submit_intr_urb(hdev, GFP_KERNEL); 614 if (err < 0) 615 goto failed; 616 617 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL); 618 if (err < 0) { 619 usb_kill_anchored_urbs(&data->intr_anchor); 620 goto failed; 621 } 622 623 set_bit(BTUSB_BULK_RUNNING, &data->flags); 624 btusb_submit_bulk_urb(hdev, GFP_KERNEL); 625 626 done: 627 usb_autopm_put_interface(data->intf); 628 return 0; 629 630 failed: 631 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 632 clear_bit(HCI_RUNNING, &hdev->flags); 633 usb_autopm_put_interface(data->intf); 634 return err; 635 } 636 637 static void btusb_stop_traffic(struct btusb_data *data) 638 { 639 usb_kill_anchored_urbs(&data->intr_anchor); 640 usb_kill_anchored_urbs(&data->bulk_anchor); 641 usb_kill_anchored_urbs(&data->isoc_anchor); 642 } 643 644 static int btusb_close(struct hci_dev *hdev) 645 { 646 struct btusb_data *data = hci_get_drvdata(hdev); 647 int err; 648 649 BT_DBG("%s", hdev->name); 650 651 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags)) 652 return 0; 653 654 cancel_work_sync(&data->work); 655 cancel_work_sync(&data->waker); 656 657 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 658 clear_bit(BTUSB_BULK_RUNNING, &data->flags); 659 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 660 661 btusb_stop_traffic(data); 662 err = usb_autopm_get_interface(data->intf); 663 if (err < 0) 664 goto failed; 665 666 data->intf->needs_remote_wakeup = 0; 667 usb_autopm_put_interface(data->intf); 668 669 failed: 670 usb_scuttle_anchored_urbs(&data->deferred); 671 return 0; 672 } 673 674 static int btusb_flush(struct hci_dev *hdev) 675 { 676 struct btusb_data *data = hci_get_drvdata(hdev); 677 678 BT_DBG("%s", hdev->name); 679 680 usb_kill_anchored_urbs(&data->tx_anchor); 681 682 return 0; 683 } 684 685 static int btusb_send_frame(struct sk_buff *skb) 686 { 687 struct hci_dev *hdev = (struct hci_dev *) skb->dev; 688 struct btusb_data *data = hci_get_drvdata(hdev); 689 struct usb_ctrlrequest *dr; 690 struct urb *urb; 691 unsigned int pipe; 692 int err; 693 694 BT_DBG("%s", hdev->name); 695 696 if (!test_bit(HCI_RUNNING, &hdev->flags)) 697 return -EBUSY; 698 699 switch (bt_cb(skb)->pkt_type) { 700 case HCI_COMMAND_PKT: 701 urb = usb_alloc_urb(0, GFP_ATOMIC); 702 if (!urb) 703 return -ENOMEM; 704 705 dr = kmalloc(sizeof(*dr), GFP_ATOMIC); 706 if (!dr) { 707 usb_free_urb(urb); 708 return -ENOMEM; 709 } 710 711 dr->bRequestType = data->cmdreq_type; 712 dr->bRequest = 0; 713 dr->wIndex = 0; 714 dr->wValue = 0; 715 dr->wLength = __cpu_to_le16(skb->len); 716 717 pipe = usb_sndctrlpipe(data->udev, 0x00); 718 719 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr, 720 skb->data, skb->len, btusb_tx_complete, skb); 721 722 hdev->stat.cmd_tx++; 723 break; 724 725 case HCI_ACLDATA_PKT: 726 if (!data->bulk_tx_ep) 727 return -ENODEV; 728 729 urb = usb_alloc_urb(0, GFP_ATOMIC); 730 if (!urb) 731 return -ENOMEM; 732 733 pipe = usb_sndbulkpipe(data->udev, 734 data->bulk_tx_ep->bEndpointAddress); 735 736 usb_fill_bulk_urb(urb, data->udev, pipe, 737 skb->data, skb->len, btusb_tx_complete, skb); 738 739 hdev->stat.acl_tx++; 740 break; 741 742 case HCI_SCODATA_PKT: 743 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1) 744 return -ENODEV; 745 746 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC); 747 if (!urb) 748 return -ENOMEM; 749 750 pipe = usb_sndisocpipe(data->udev, 751 data->isoc_tx_ep->bEndpointAddress); 752 753 usb_fill_int_urb(urb, data->udev, pipe, 754 skb->data, skb->len, btusb_isoc_tx_complete, 755 skb, data->isoc_tx_ep->bInterval); 756 757 urb->transfer_flags = URB_ISO_ASAP; 758 759 __fill_isoc_descriptor(urb, skb->len, 760 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize)); 761 762 hdev->stat.sco_tx++; 763 goto skip_waking; 764 765 default: 766 return -EILSEQ; 767 } 768 769 err = inc_tx(data); 770 if (err) { 771 usb_anchor_urb(urb, &data->deferred); 772 schedule_work(&data->waker); 773 err = 0; 774 goto done; 775 } 776 777 skip_waking: 778 usb_anchor_urb(urb, &data->tx_anchor); 779 780 err = usb_submit_urb(urb, GFP_ATOMIC); 781 if (err < 0) { 782 if (err != -EPERM && err != -ENODEV) 783 BT_ERR("%s urb %p submission failed (%d)", 784 hdev->name, urb, -err); 785 kfree(urb->setup_packet); 786 usb_unanchor_urb(urb); 787 } else { 788 usb_mark_last_busy(data->udev); 789 } 790 791 done: 792 usb_free_urb(urb); 793 return err; 794 } 795 796 static void btusb_notify(struct hci_dev *hdev, unsigned int evt) 797 { 798 struct btusb_data *data = hci_get_drvdata(hdev); 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 = hci_get_drvdata(hdev); 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 new_alts; 856 int err; 857 858 if (hdev->conn_hash.sco_num > 0) { 859 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) { 860 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf); 861 if (err < 0) { 862 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 863 usb_kill_anchored_urbs(&data->isoc_anchor); 864 return; 865 } 866 867 set_bit(BTUSB_DID_ISO_RESUME, &data->flags); 868 } 869 870 if (hdev->voice_setting & 0x0020) { 871 static const int alts[3] = { 2, 4, 5 }; 872 new_alts = alts[hdev->conn_hash.sco_num - 1]; 873 } else { 874 new_alts = hdev->conn_hash.sco_num; 875 } 876 877 if (data->isoc_altsetting != new_alts) { 878 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 879 usb_kill_anchored_urbs(&data->isoc_anchor); 880 881 if (__set_isoc_interface(hdev, new_alts) < 0) 882 return; 883 } 884 885 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) { 886 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0) 887 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 888 else 889 btusb_submit_isoc_urb(hdev, GFP_KERNEL); 890 } 891 } else { 892 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 893 usb_kill_anchored_urbs(&data->isoc_anchor); 894 895 __set_isoc_interface(hdev, 0); 896 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags)) 897 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf); 898 } 899 } 900 901 static void btusb_waker(struct work_struct *work) 902 { 903 struct btusb_data *data = container_of(work, struct btusb_data, waker); 904 int err; 905 906 err = usb_autopm_get_interface(data->intf); 907 if (err < 0) 908 return; 909 910 usb_autopm_put_interface(data->intf); 911 } 912 913 static int btusb_probe(struct usb_interface *intf, 914 const struct usb_device_id *id) 915 { 916 struct usb_endpoint_descriptor *ep_desc; 917 struct btusb_data *data; 918 struct hci_dev *hdev; 919 int i, err; 920 921 BT_DBG("intf %p id %p", intf, id); 922 923 /* interface numbers are hardcoded in the spec */ 924 if (intf->cur_altsetting->desc.bInterfaceNumber != 0) 925 return -ENODEV; 926 927 if (!id->driver_info) { 928 const struct usb_device_id *match; 929 match = usb_match_id(intf, blacklist_table); 930 if (match) 931 id = match; 932 } 933 934 if (id->driver_info == BTUSB_IGNORE) 935 return -ENODEV; 936 937 if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER) 938 return -ENODEV; 939 940 if (ignore_csr && id->driver_info & BTUSB_CSR) 941 return -ENODEV; 942 943 if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER) 944 return -ENODEV; 945 946 if (id->driver_info & BTUSB_ATH3012) { 947 struct usb_device *udev = interface_to_usbdev(intf); 948 949 /* Old firmware would otherwise let ath3k driver load 950 * patch and sysconfig files */ 951 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001) 952 return -ENODEV; 953 } 954 955 data = kzalloc(sizeof(*data), GFP_KERNEL); 956 if (!data) 957 return -ENOMEM; 958 959 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { 960 ep_desc = &intf->cur_altsetting->endpoint[i].desc; 961 962 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) { 963 data->intr_ep = ep_desc; 964 continue; 965 } 966 967 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) { 968 data->bulk_tx_ep = ep_desc; 969 continue; 970 } 971 972 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) { 973 data->bulk_rx_ep = ep_desc; 974 continue; 975 } 976 } 977 978 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) { 979 kfree(data); 980 return -ENODEV; 981 } 982 983 data->cmdreq_type = USB_TYPE_CLASS; 984 985 data->udev = interface_to_usbdev(intf); 986 data->intf = intf; 987 988 spin_lock_init(&data->lock); 989 990 INIT_WORK(&data->work, btusb_work); 991 INIT_WORK(&data->waker, btusb_waker); 992 spin_lock_init(&data->txlock); 993 994 init_usb_anchor(&data->tx_anchor); 995 init_usb_anchor(&data->intr_anchor); 996 init_usb_anchor(&data->bulk_anchor); 997 init_usb_anchor(&data->isoc_anchor); 998 init_usb_anchor(&data->deferred); 999 1000 hdev = hci_alloc_dev(); 1001 if (!hdev) { 1002 kfree(data); 1003 return -ENOMEM; 1004 } 1005 1006 hdev->bus = HCI_USB; 1007 hci_set_drvdata(hdev, data); 1008 1009 data->hdev = hdev; 1010 1011 SET_HCIDEV_DEV(hdev, &intf->dev); 1012 1013 hdev->open = btusb_open; 1014 hdev->close = btusb_close; 1015 hdev->flush = btusb_flush; 1016 hdev->send = btusb_send_frame; 1017 hdev->notify = btusb_notify; 1018 1019 /* Interface numbers are hardcoded in the specification */ 1020 data->isoc = usb_ifnum_to_if(data->udev, 1); 1021 1022 if (!reset) 1023 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); 1024 1025 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) { 1026 if (!disable_scofix) 1027 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks); 1028 } 1029 1030 if (id->driver_info & BTUSB_BROKEN_ISOC) 1031 data->isoc = NULL; 1032 1033 if (id->driver_info & BTUSB_DIGIANSWER) { 1034 data->cmdreq_type = USB_TYPE_VENDOR; 1035 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); 1036 } 1037 1038 if (id->driver_info & BTUSB_CSR) { 1039 struct usb_device *udev = data->udev; 1040 1041 /* Old firmware would otherwise execute USB reset */ 1042 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117) 1043 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); 1044 } 1045 1046 if (id->driver_info & BTUSB_SNIFFER) { 1047 struct usb_device *udev = data->udev; 1048 1049 /* New sniffer firmware has crippled HCI interface */ 1050 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997) 1051 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks); 1052 1053 data->isoc = NULL; 1054 } 1055 1056 if (id->driver_info & BTUSB_BCM92035) { 1057 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 }; 1058 struct sk_buff *skb; 1059 1060 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL); 1061 if (skb) { 1062 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd)); 1063 skb_queue_tail(&hdev->driver_init, skb); 1064 } 1065 } 1066 1067 if (data->isoc) { 1068 err = usb_driver_claim_interface(&btusb_driver, 1069 data->isoc, data); 1070 if (err < 0) { 1071 hci_free_dev(hdev); 1072 kfree(data); 1073 return err; 1074 } 1075 } 1076 1077 err = hci_register_dev(hdev); 1078 if (err < 0) { 1079 hci_free_dev(hdev); 1080 kfree(data); 1081 return err; 1082 } 1083 1084 usb_set_intfdata(intf, data); 1085 1086 return 0; 1087 } 1088 1089 static void btusb_disconnect(struct usb_interface *intf) 1090 { 1091 struct btusb_data *data = usb_get_intfdata(intf); 1092 struct hci_dev *hdev; 1093 1094 BT_DBG("intf %p", intf); 1095 1096 if (!data) 1097 return; 1098 1099 hdev = data->hdev; 1100 usb_set_intfdata(data->intf, NULL); 1101 1102 if (data->isoc) 1103 usb_set_intfdata(data->isoc, NULL); 1104 1105 hci_unregister_dev(hdev); 1106 1107 if (intf == data->isoc) 1108 usb_driver_release_interface(&btusb_driver, data->intf); 1109 else if (data->isoc) 1110 usb_driver_release_interface(&btusb_driver, data->isoc); 1111 1112 hci_free_dev(hdev); 1113 kfree(data); 1114 } 1115 1116 #ifdef CONFIG_PM 1117 static int btusb_suspend(struct usb_interface *intf, pm_message_t message) 1118 { 1119 struct btusb_data *data = usb_get_intfdata(intf); 1120 1121 BT_DBG("intf %p", intf); 1122 1123 if (data->suspend_count++) 1124 return 0; 1125 1126 spin_lock_irq(&data->txlock); 1127 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) { 1128 set_bit(BTUSB_SUSPENDING, &data->flags); 1129 spin_unlock_irq(&data->txlock); 1130 } else { 1131 spin_unlock_irq(&data->txlock); 1132 data->suspend_count--; 1133 return -EBUSY; 1134 } 1135 1136 cancel_work_sync(&data->work); 1137 1138 btusb_stop_traffic(data); 1139 usb_kill_anchored_urbs(&data->tx_anchor); 1140 1141 return 0; 1142 } 1143 1144 static void play_deferred(struct btusb_data *data) 1145 { 1146 struct urb *urb; 1147 int err; 1148 1149 while ((urb = usb_get_from_anchor(&data->deferred))) { 1150 err = usb_submit_urb(urb, GFP_ATOMIC); 1151 if (err < 0) 1152 break; 1153 1154 data->tx_in_flight++; 1155 } 1156 usb_scuttle_anchored_urbs(&data->deferred); 1157 } 1158 1159 static int btusb_resume(struct usb_interface *intf) 1160 { 1161 struct btusb_data *data = usb_get_intfdata(intf); 1162 struct hci_dev *hdev = data->hdev; 1163 int err = 0; 1164 1165 BT_DBG("intf %p", intf); 1166 1167 if (--data->suspend_count) 1168 return 0; 1169 1170 if (!test_bit(HCI_RUNNING, &hdev->flags)) 1171 goto done; 1172 1173 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) { 1174 err = btusb_submit_intr_urb(hdev, GFP_NOIO); 1175 if (err < 0) { 1176 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 1177 goto failed; 1178 } 1179 } 1180 1181 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) { 1182 err = btusb_submit_bulk_urb(hdev, GFP_NOIO); 1183 if (err < 0) { 1184 clear_bit(BTUSB_BULK_RUNNING, &data->flags); 1185 goto failed; 1186 } 1187 1188 btusb_submit_bulk_urb(hdev, GFP_NOIO); 1189 } 1190 1191 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) { 1192 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0) 1193 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1194 else 1195 btusb_submit_isoc_urb(hdev, GFP_NOIO); 1196 } 1197 1198 spin_lock_irq(&data->txlock); 1199 play_deferred(data); 1200 clear_bit(BTUSB_SUSPENDING, &data->flags); 1201 spin_unlock_irq(&data->txlock); 1202 schedule_work(&data->work); 1203 1204 return 0; 1205 1206 failed: 1207 usb_scuttle_anchored_urbs(&data->deferred); 1208 done: 1209 spin_lock_irq(&data->txlock); 1210 clear_bit(BTUSB_SUSPENDING, &data->flags); 1211 spin_unlock_irq(&data->txlock); 1212 1213 return err; 1214 } 1215 #endif 1216 1217 static struct usb_driver btusb_driver = { 1218 .name = "btusb", 1219 .probe = btusb_probe, 1220 .disconnect = btusb_disconnect, 1221 #ifdef CONFIG_PM 1222 .suspend = btusb_suspend, 1223 .resume = btusb_resume, 1224 #endif 1225 .id_table = btusb_table, 1226 .supports_autosuspend = 1, 1227 .disable_hub_initiated_lpm = 1, 1228 }; 1229 1230 module_usb_driver(btusb_driver); 1231 1232 module_param(ignore_dga, bool, 0644); 1233 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001"); 1234 1235 module_param(ignore_csr, bool, 0644); 1236 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001"); 1237 1238 module_param(ignore_sniffer, bool, 0644); 1239 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002"); 1240 1241 module_param(disable_scofix, bool, 0644); 1242 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size"); 1243 1244 module_param(force_scofix, bool, 0644); 1245 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size"); 1246 1247 module_param(reset, bool, 0644); 1248 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization"); 1249 1250 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); 1251 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION); 1252 MODULE_VERSION(VERSION); 1253 MODULE_LICENSE("GPL"); 1254