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 /* Apple-specific (Broadcom) devices */ 56 { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01) }, 57 58 /* Broadcom SoftSailing reporting vendor specific */ 59 { USB_DEVICE(0x0a5c, 0x21e1) }, 60 61 /* Apple MacBookPro 7,1 */ 62 { USB_DEVICE(0x05ac, 0x8213) }, 63 64 /* Apple iMac11,1 */ 65 { USB_DEVICE(0x05ac, 0x8215) }, 66 67 /* Apple MacBookPro6,2 */ 68 { USB_DEVICE(0x05ac, 0x8218) }, 69 70 /* Apple MacBookAir3,1, MacBookAir3,2 */ 71 { USB_DEVICE(0x05ac, 0x821b) }, 72 73 /* Apple MacBookAir4,1 */ 74 { USB_DEVICE(0x05ac, 0x821f) }, 75 76 /* Apple MacBookPro8,2 */ 77 { USB_DEVICE(0x05ac, 0x821a) }, 78 79 /* Apple MacMini5,1 */ 80 { USB_DEVICE(0x05ac, 0x8281) }, 81 82 /* AVM BlueFRITZ! USB v2.0 */ 83 { USB_DEVICE(0x057c, 0x3800) }, 84 85 /* Bluetooth Ultraport Module from IBM */ 86 { USB_DEVICE(0x04bf, 0x030a) }, 87 88 /* ALPS Modules with non-standard id */ 89 { USB_DEVICE(0x044e, 0x3001) }, 90 { USB_DEVICE(0x044e, 0x3002) }, 91 92 /* Ericsson with non-standard id */ 93 { USB_DEVICE(0x0bdb, 0x1002) }, 94 95 /* Canyon CN-BTU1 with HID interfaces */ 96 { USB_DEVICE(0x0c10, 0x0000) }, 97 98 /* Broadcom BCM20702A0 */ 99 { USB_DEVICE(0x0489, 0xe042) }, 100 { USB_DEVICE(0x413c, 0x8197) }, 101 102 /* Foxconn - Hon Hai */ 103 { USB_DEVICE(0x0489, 0xe033) }, 104 105 /*Broadcom devices with vendor specific id */ 106 { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01) }, 107 108 { } /* Terminating entry */ 109 }; 110 111 MODULE_DEVICE_TABLE(usb, btusb_table); 112 113 static struct usb_device_id blacklist_table[] = { 114 /* CSR BlueCore devices */ 115 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR }, 116 117 /* Broadcom BCM2033 without firmware */ 118 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE }, 119 120 /* Atheros 3011 with sflash firmware */ 121 { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE }, 122 { USB_DEVICE(0x0cf3, 0xe019), .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(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 }, 133 { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 }, 134 { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 }, 135 { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 }, 136 { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 }, 137 { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 }, 138 { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 }, 139 140 /* Atheros AR5BBU12 with sflash firmware */ 141 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE }, 142 143 /* Atheros AR5BBU12 with sflash firmware */ 144 { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 }, 145 { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 }, 146 147 /* Broadcom BCM2035 */ 148 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU }, 149 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU }, 150 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 }, 151 152 /* Broadcom BCM2045 */ 153 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU }, 154 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU }, 155 156 /* IBM/Lenovo ThinkPad with Broadcom chip */ 157 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU }, 158 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU }, 159 160 /* HP laptop with Broadcom chip */ 161 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU }, 162 163 /* Dell laptop with Broadcom chip */ 164 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU }, 165 166 /* Dell Wireless 370 and 410 devices */ 167 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU }, 168 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU }, 169 170 /* Belkin F8T012 and F8T013 devices */ 171 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU }, 172 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU }, 173 174 /* Asus WL-BTD202 device */ 175 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU }, 176 177 /* Kensington Bluetooth USB adapter */ 178 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU }, 179 180 /* RTX Telecom based adapters with buggy SCO support */ 181 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC }, 182 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC }, 183 184 /* CONWISE Technology based adapters with buggy SCO support */ 185 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC }, 186 187 /* Digianswer devices */ 188 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER }, 189 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE }, 190 191 /* CSR BlueCore Bluetooth Sniffer */ 192 { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER }, 193 194 /* Frontline ComProbe Bluetooth Sniffer */ 195 { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER }, 196 197 { } /* Terminating entry */ 198 }; 199 200 #define BTUSB_MAX_ISOC_FRAMES 10 201 202 #define BTUSB_INTR_RUNNING 0 203 #define BTUSB_BULK_RUNNING 1 204 #define BTUSB_ISOC_RUNNING 2 205 #define BTUSB_SUSPENDING 3 206 #define BTUSB_DID_ISO_RESUME 4 207 208 struct btusb_data { 209 struct hci_dev *hdev; 210 struct usb_device *udev; 211 struct usb_interface *intf; 212 struct usb_interface *isoc; 213 214 spinlock_t lock; 215 216 unsigned long flags; 217 218 struct work_struct work; 219 struct work_struct waker; 220 221 struct usb_anchor tx_anchor; 222 struct usb_anchor intr_anchor; 223 struct usb_anchor bulk_anchor; 224 struct usb_anchor isoc_anchor; 225 struct usb_anchor deferred; 226 int tx_in_flight; 227 spinlock_t txlock; 228 229 struct usb_endpoint_descriptor *intr_ep; 230 struct usb_endpoint_descriptor *bulk_tx_ep; 231 struct usb_endpoint_descriptor *bulk_rx_ep; 232 struct usb_endpoint_descriptor *isoc_tx_ep; 233 struct usb_endpoint_descriptor *isoc_rx_ep; 234 235 __u8 cmdreq_type; 236 237 unsigned int sco_num; 238 int isoc_altsetting; 239 int suspend_count; 240 }; 241 242 static int inc_tx(struct btusb_data *data) 243 { 244 unsigned long flags; 245 int rv; 246 247 spin_lock_irqsave(&data->txlock, flags); 248 rv = test_bit(BTUSB_SUSPENDING, &data->flags); 249 if (!rv) 250 data->tx_in_flight++; 251 spin_unlock_irqrestore(&data->txlock, flags); 252 253 return rv; 254 } 255 256 static void btusb_intr_complete(struct urb *urb) 257 { 258 struct hci_dev *hdev = urb->context; 259 struct btusb_data *data = hci_get_drvdata(hdev); 260 int err; 261 262 BT_DBG("%s urb %p status %d count %d", hdev->name, 263 urb, urb->status, urb->actual_length); 264 265 if (!test_bit(HCI_RUNNING, &hdev->flags)) 266 return; 267 268 if (urb->status == 0) { 269 hdev->stat.byte_rx += urb->actual_length; 270 271 if (hci_recv_fragment(hdev, HCI_EVENT_PKT, 272 urb->transfer_buffer, 273 urb->actual_length) < 0) { 274 BT_ERR("%s corrupted event packet", hdev->name); 275 hdev->stat.err_rx++; 276 } 277 } 278 279 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags)) 280 return; 281 282 usb_mark_last_busy(data->udev); 283 usb_anchor_urb(urb, &data->intr_anchor); 284 285 err = usb_submit_urb(urb, GFP_ATOMIC); 286 if (err < 0) { 287 /* -EPERM: urb is being killed; 288 * -ENODEV: device got disconnected */ 289 if (err != -EPERM && err != -ENODEV) 290 BT_ERR("%s urb %p failed to resubmit (%d)", 291 hdev->name, urb, -err); 292 usb_unanchor_urb(urb); 293 } 294 } 295 296 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags) 297 { 298 struct btusb_data *data = hci_get_drvdata(hdev); 299 struct urb *urb; 300 unsigned char *buf; 301 unsigned int pipe; 302 int err, size; 303 304 BT_DBG("%s", hdev->name); 305 306 if (!data->intr_ep) 307 return -ENODEV; 308 309 urb = usb_alloc_urb(0, mem_flags); 310 if (!urb) 311 return -ENOMEM; 312 313 size = le16_to_cpu(data->intr_ep->wMaxPacketSize); 314 315 buf = kmalloc(size, mem_flags); 316 if (!buf) { 317 usb_free_urb(urb); 318 return -ENOMEM; 319 } 320 321 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress); 322 323 usb_fill_int_urb(urb, data->udev, pipe, buf, size, 324 btusb_intr_complete, hdev, 325 data->intr_ep->bInterval); 326 327 urb->transfer_flags |= URB_FREE_BUFFER; 328 329 usb_anchor_urb(urb, &data->intr_anchor); 330 331 err = usb_submit_urb(urb, mem_flags); 332 if (err < 0) { 333 if (err != -EPERM && err != -ENODEV) 334 BT_ERR("%s urb %p submission failed (%d)", 335 hdev->name, urb, -err); 336 usb_unanchor_urb(urb); 337 } 338 339 usb_free_urb(urb); 340 341 return err; 342 } 343 344 static void btusb_bulk_complete(struct urb *urb) 345 { 346 struct hci_dev *hdev = urb->context; 347 struct btusb_data *data = hci_get_drvdata(hdev); 348 int err; 349 350 BT_DBG("%s urb %p status %d count %d", hdev->name, 351 urb, urb->status, urb->actual_length); 352 353 if (!test_bit(HCI_RUNNING, &hdev->flags)) 354 return; 355 356 if (urb->status == 0) { 357 hdev->stat.byte_rx += urb->actual_length; 358 359 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT, 360 urb->transfer_buffer, 361 urb->actual_length) < 0) { 362 BT_ERR("%s corrupted ACL packet", hdev->name); 363 hdev->stat.err_rx++; 364 } 365 } 366 367 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags)) 368 return; 369 370 usb_anchor_urb(urb, &data->bulk_anchor); 371 usb_mark_last_busy(data->udev); 372 373 err = usb_submit_urb(urb, GFP_ATOMIC); 374 if (err < 0) { 375 /* -EPERM: urb is being killed; 376 * -ENODEV: device got disconnected */ 377 if (err != -EPERM && err != -ENODEV) 378 BT_ERR("%s urb %p failed to resubmit (%d)", 379 hdev->name, urb, -err); 380 usb_unanchor_urb(urb); 381 } 382 } 383 384 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags) 385 { 386 struct btusb_data *data = hci_get_drvdata(hdev); 387 struct urb *urb; 388 unsigned char *buf; 389 unsigned int pipe; 390 int err, size = HCI_MAX_FRAME_SIZE; 391 392 BT_DBG("%s", hdev->name); 393 394 if (!data->bulk_rx_ep) 395 return -ENODEV; 396 397 urb = usb_alloc_urb(0, mem_flags); 398 if (!urb) 399 return -ENOMEM; 400 401 buf = kmalloc(size, mem_flags); 402 if (!buf) { 403 usb_free_urb(urb); 404 return -ENOMEM; 405 } 406 407 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress); 408 409 usb_fill_bulk_urb(urb, data->udev, pipe, 410 buf, size, btusb_bulk_complete, hdev); 411 412 urb->transfer_flags |= URB_FREE_BUFFER; 413 414 usb_mark_last_busy(data->udev); 415 usb_anchor_urb(urb, &data->bulk_anchor); 416 417 err = usb_submit_urb(urb, mem_flags); 418 if (err < 0) { 419 if (err != -EPERM && err != -ENODEV) 420 BT_ERR("%s urb %p submission failed (%d)", 421 hdev->name, urb, -err); 422 usb_unanchor_urb(urb); 423 } 424 425 usb_free_urb(urb); 426 427 return err; 428 } 429 430 static void btusb_isoc_complete(struct urb *urb) 431 { 432 struct hci_dev *hdev = urb->context; 433 struct btusb_data *data = hci_get_drvdata(hdev); 434 int i, err; 435 436 BT_DBG("%s urb %p status %d count %d", hdev->name, 437 urb, urb->status, urb->actual_length); 438 439 if (!test_bit(HCI_RUNNING, &hdev->flags)) 440 return; 441 442 if (urb->status == 0) { 443 for (i = 0; i < urb->number_of_packets; i++) { 444 unsigned int offset = urb->iso_frame_desc[i].offset; 445 unsigned int length = urb->iso_frame_desc[i].actual_length; 446 447 if (urb->iso_frame_desc[i].status) 448 continue; 449 450 hdev->stat.byte_rx += length; 451 452 if (hci_recv_fragment(hdev, HCI_SCODATA_PKT, 453 urb->transfer_buffer + offset, 454 length) < 0) { 455 BT_ERR("%s corrupted SCO packet", hdev->name); 456 hdev->stat.err_rx++; 457 } 458 } 459 } 460 461 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags)) 462 return; 463 464 usb_anchor_urb(urb, &data->isoc_anchor); 465 466 err = usb_submit_urb(urb, GFP_ATOMIC); 467 if (err < 0) { 468 /* -EPERM: urb is being killed; 469 * -ENODEV: device got disconnected */ 470 if (err != -EPERM && err != -ENODEV) 471 BT_ERR("%s urb %p failed to resubmit (%d)", 472 hdev->name, urb, -err); 473 usb_unanchor_urb(urb); 474 } 475 } 476 477 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu) 478 { 479 int i, offset = 0; 480 481 BT_DBG("len %d mtu %d", len, mtu); 482 483 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu; 484 i++, offset += mtu, len -= mtu) { 485 urb->iso_frame_desc[i].offset = offset; 486 urb->iso_frame_desc[i].length = mtu; 487 } 488 489 if (len && i < BTUSB_MAX_ISOC_FRAMES) { 490 urb->iso_frame_desc[i].offset = offset; 491 urb->iso_frame_desc[i].length = len; 492 i++; 493 } 494 495 urb->number_of_packets = i; 496 } 497 498 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags) 499 { 500 struct btusb_data *data = hci_get_drvdata(hdev); 501 struct urb *urb; 502 unsigned char *buf; 503 unsigned int pipe; 504 int err, size; 505 506 BT_DBG("%s", hdev->name); 507 508 if (!data->isoc_rx_ep) 509 return -ENODEV; 510 511 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags); 512 if (!urb) 513 return -ENOMEM; 514 515 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) * 516 BTUSB_MAX_ISOC_FRAMES; 517 518 buf = kmalloc(size, mem_flags); 519 if (!buf) { 520 usb_free_urb(urb); 521 return -ENOMEM; 522 } 523 524 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress); 525 526 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete, 527 hdev, data->isoc_rx_ep->bInterval); 528 529 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP; 530 531 __fill_isoc_descriptor(urb, size, 532 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize)); 533 534 usb_anchor_urb(urb, &data->isoc_anchor); 535 536 err = usb_submit_urb(urb, mem_flags); 537 if (err < 0) { 538 if (err != -EPERM && err != -ENODEV) 539 BT_ERR("%s urb %p submission failed (%d)", 540 hdev->name, urb, -err); 541 usb_unanchor_urb(urb); 542 } 543 544 usb_free_urb(urb); 545 546 return err; 547 } 548 549 static void btusb_tx_complete(struct urb *urb) 550 { 551 struct sk_buff *skb = urb->context; 552 struct hci_dev *hdev = (struct hci_dev *) skb->dev; 553 struct btusb_data *data = hci_get_drvdata(hdev); 554 555 BT_DBG("%s urb %p status %d count %d", hdev->name, 556 urb, urb->status, urb->actual_length); 557 558 if (!test_bit(HCI_RUNNING, &hdev->flags)) 559 goto done; 560 561 if (!urb->status) 562 hdev->stat.byte_tx += urb->transfer_buffer_length; 563 else 564 hdev->stat.err_tx++; 565 566 done: 567 spin_lock(&data->txlock); 568 data->tx_in_flight--; 569 spin_unlock(&data->txlock); 570 571 kfree(urb->setup_packet); 572 573 kfree_skb(skb); 574 } 575 576 static void btusb_isoc_tx_complete(struct urb *urb) 577 { 578 struct sk_buff *skb = urb->context; 579 struct hci_dev *hdev = (struct hci_dev *) skb->dev; 580 581 BT_DBG("%s urb %p status %d count %d", hdev->name, 582 urb, urb->status, urb->actual_length); 583 584 if (!test_bit(HCI_RUNNING, &hdev->flags)) 585 goto done; 586 587 if (!urb->status) 588 hdev->stat.byte_tx += urb->transfer_buffer_length; 589 else 590 hdev->stat.err_tx++; 591 592 done: 593 kfree(urb->setup_packet); 594 595 kfree_skb(skb); 596 } 597 598 static int btusb_open(struct hci_dev *hdev) 599 { 600 struct btusb_data *data = hci_get_drvdata(hdev); 601 int err; 602 603 BT_DBG("%s", hdev->name); 604 605 err = usb_autopm_get_interface(data->intf); 606 if (err < 0) 607 return err; 608 609 data->intf->needs_remote_wakeup = 1; 610 611 if (test_and_set_bit(HCI_RUNNING, &hdev->flags)) 612 goto done; 613 614 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags)) 615 goto done; 616 617 err = btusb_submit_intr_urb(hdev, GFP_KERNEL); 618 if (err < 0) 619 goto failed; 620 621 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL); 622 if (err < 0) { 623 usb_kill_anchored_urbs(&data->intr_anchor); 624 goto failed; 625 } 626 627 set_bit(BTUSB_BULK_RUNNING, &data->flags); 628 btusb_submit_bulk_urb(hdev, GFP_KERNEL); 629 630 done: 631 usb_autopm_put_interface(data->intf); 632 return 0; 633 634 failed: 635 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 636 clear_bit(HCI_RUNNING, &hdev->flags); 637 usb_autopm_put_interface(data->intf); 638 return err; 639 } 640 641 static void btusb_stop_traffic(struct btusb_data *data) 642 { 643 usb_kill_anchored_urbs(&data->intr_anchor); 644 usb_kill_anchored_urbs(&data->bulk_anchor); 645 usb_kill_anchored_urbs(&data->isoc_anchor); 646 } 647 648 static int btusb_close(struct hci_dev *hdev) 649 { 650 struct btusb_data *data = hci_get_drvdata(hdev); 651 int err; 652 653 BT_DBG("%s", hdev->name); 654 655 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags)) 656 return 0; 657 658 cancel_work_sync(&data->work); 659 cancel_work_sync(&data->waker); 660 661 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 662 clear_bit(BTUSB_BULK_RUNNING, &data->flags); 663 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 664 665 btusb_stop_traffic(data); 666 err = usb_autopm_get_interface(data->intf); 667 if (err < 0) 668 goto failed; 669 670 data->intf->needs_remote_wakeup = 0; 671 usb_autopm_put_interface(data->intf); 672 673 failed: 674 usb_scuttle_anchored_urbs(&data->deferred); 675 return 0; 676 } 677 678 static int btusb_flush(struct hci_dev *hdev) 679 { 680 struct btusb_data *data = hci_get_drvdata(hdev); 681 682 BT_DBG("%s", hdev->name); 683 684 usb_kill_anchored_urbs(&data->tx_anchor); 685 686 return 0; 687 } 688 689 static int btusb_send_frame(struct sk_buff *skb) 690 { 691 struct hci_dev *hdev = (struct hci_dev *) skb->dev; 692 struct btusb_data *data = hci_get_drvdata(hdev); 693 struct usb_ctrlrequest *dr; 694 struct urb *urb; 695 unsigned int pipe; 696 int err; 697 698 BT_DBG("%s", hdev->name); 699 700 if (!test_bit(HCI_RUNNING, &hdev->flags)) 701 return -EBUSY; 702 703 switch (bt_cb(skb)->pkt_type) { 704 case HCI_COMMAND_PKT: 705 urb = usb_alloc_urb(0, GFP_ATOMIC); 706 if (!urb) 707 return -ENOMEM; 708 709 dr = kmalloc(sizeof(*dr), GFP_ATOMIC); 710 if (!dr) { 711 usb_free_urb(urb); 712 return -ENOMEM; 713 } 714 715 dr->bRequestType = data->cmdreq_type; 716 dr->bRequest = 0; 717 dr->wIndex = 0; 718 dr->wValue = 0; 719 dr->wLength = __cpu_to_le16(skb->len); 720 721 pipe = usb_sndctrlpipe(data->udev, 0x00); 722 723 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr, 724 skb->data, skb->len, btusb_tx_complete, skb); 725 726 hdev->stat.cmd_tx++; 727 break; 728 729 case HCI_ACLDATA_PKT: 730 if (!data->bulk_tx_ep) 731 return -ENODEV; 732 733 urb = usb_alloc_urb(0, GFP_ATOMIC); 734 if (!urb) 735 return -ENOMEM; 736 737 pipe = usb_sndbulkpipe(data->udev, 738 data->bulk_tx_ep->bEndpointAddress); 739 740 usb_fill_bulk_urb(urb, data->udev, pipe, 741 skb->data, skb->len, btusb_tx_complete, skb); 742 743 hdev->stat.acl_tx++; 744 break; 745 746 case HCI_SCODATA_PKT: 747 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1) 748 return -ENODEV; 749 750 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC); 751 if (!urb) 752 return -ENOMEM; 753 754 pipe = usb_sndisocpipe(data->udev, 755 data->isoc_tx_ep->bEndpointAddress); 756 757 usb_fill_int_urb(urb, data->udev, pipe, 758 skb->data, skb->len, btusb_isoc_tx_complete, 759 skb, data->isoc_tx_ep->bInterval); 760 761 urb->transfer_flags = URB_ISO_ASAP; 762 763 __fill_isoc_descriptor(urb, skb->len, 764 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize)); 765 766 hdev->stat.sco_tx++; 767 goto skip_waking; 768 769 default: 770 return -EILSEQ; 771 } 772 773 err = inc_tx(data); 774 if (err) { 775 usb_anchor_urb(urb, &data->deferred); 776 schedule_work(&data->waker); 777 err = 0; 778 goto done; 779 } 780 781 skip_waking: 782 usb_anchor_urb(urb, &data->tx_anchor); 783 784 err = usb_submit_urb(urb, GFP_ATOMIC); 785 if (err < 0) { 786 if (err != -EPERM && err != -ENODEV) 787 BT_ERR("%s urb %p submission failed (%d)", 788 hdev->name, urb, -err); 789 kfree(urb->setup_packet); 790 usb_unanchor_urb(urb); 791 } else { 792 usb_mark_last_busy(data->udev); 793 } 794 795 done: 796 usb_free_urb(urb); 797 return err; 798 } 799 800 static void btusb_notify(struct hci_dev *hdev, unsigned int evt) 801 { 802 struct btusb_data *data = hci_get_drvdata(hdev); 803 804 BT_DBG("%s evt %d", hdev->name, evt); 805 806 if (hdev->conn_hash.sco_num != data->sco_num) { 807 data->sco_num = hdev->conn_hash.sco_num; 808 schedule_work(&data->work); 809 } 810 } 811 812 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting) 813 { 814 struct btusb_data *data = hci_get_drvdata(hdev); 815 struct usb_interface *intf = data->isoc; 816 struct usb_endpoint_descriptor *ep_desc; 817 int i, err; 818 819 if (!data->isoc) 820 return -ENODEV; 821 822 err = usb_set_interface(data->udev, 1, altsetting); 823 if (err < 0) { 824 BT_ERR("%s setting interface failed (%d)", hdev->name, -err); 825 return err; 826 } 827 828 data->isoc_altsetting = altsetting; 829 830 data->isoc_tx_ep = NULL; 831 data->isoc_rx_ep = NULL; 832 833 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { 834 ep_desc = &intf->cur_altsetting->endpoint[i].desc; 835 836 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) { 837 data->isoc_tx_ep = ep_desc; 838 continue; 839 } 840 841 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) { 842 data->isoc_rx_ep = ep_desc; 843 continue; 844 } 845 } 846 847 if (!data->isoc_tx_ep || !data->isoc_rx_ep) { 848 BT_ERR("%s invalid SCO descriptors", hdev->name); 849 return -ENODEV; 850 } 851 852 return 0; 853 } 854 855 static void btusb_work(struct work_struct *work) 856 { 857 struct btusb_data *data = container_of(work, struct btusb_data, work); 858 struct hci_dev *hdev = data->hdev; 859 int new_alts; 860 int err; 861 862 if (hdev->conn_hash.sco_num > 0) { 863 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) { 864 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf); 865 if (err < 0) { 866 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 867 usb_kill_anchored_urbs(&data->isoc_anchor); 868 return; 869 } 870 871 set_bit(BTUSB_DID_ISO_RESUME, &data->flags); 872 } 873 874 if (hdev->voice_setting & 0x0020) { 875 static const int alts[3] = { 2, 4, 5 }; 876 new_alts = alts[hdev->conn_hash.sco_num - 1]; 877 } else { 878 new_alts = hdev->conn_hash.sco_num; 879 } 880 881 if (data->isoc_altsetting != new_alts) { 882 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 883 usb_kill_anchored_urbs(&data->isoc_anchor); 884 885 if (__set_isoc_interface(hdev, new_alts) < 0) 886 return; 887 } 888 889 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) { 890 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0) 891 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 892 else 893 btusb_submit_isoc_urb(hdev, GFP_KERNEL); 894 } 895 } else { 896 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 897 usb_kill_anchored_urbs(&data->isoc_anchor); 898 899 __set_isoc_interface(hdev, 0); 900 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags)) 901 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf); 902 } 903 } 904 905 static void btusb_waker(struct work_struct *work) 906 { 907 struct btusb_data *data = container_of(work, struct btusb_data, waker); 908 int err; 909 910 err = usb_autopm_get_interface(data->intf); 911 if (err < 0) 912 return; 913 914 usb_autopm_put_interface(data->intf); 915 } 916 917 static int btusb_probe(struct usb_interface *intf, 918 const struct usb_device_id *id) 919 { 920 struct usb_endpoint_descriptor *ep_desc; 921 struct btusb_data *data; 922 struct hci_dev *hdev; 923 int i, err; 924 925 BT_DBG("intf %p id %p", intf, id); 926 927 /* interface numbers are hardcoded in the spec */ 928 if (intf->cur_altsetting->desc.bInterfaceNumber != 0) 929 return -ENODEV; 930 931 if (!id->driver_info) { 932 const struct usb_device_id *match; 933 match = usb_match_id(intf, blacklist_table); 934 if (match) 935 id = match; 936 } 937 938 if (id->driver_info == BTUSB_IGNORE) 939 return -ENODEV; 940 941 if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER) 942 return -ENODEV; 943 944 if (ignore_csr && id->driver_info & BTUSB_CSR) 945 return -ENODEV; 946 947 if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER) 948 return -ENODEV; 949 950 if (id->driver_info & BTUSB_ATH3012) { 951 struct usb_device *udev = interface_to_usbdev(intf); 952 953 /* Old firmware would otherwise let ath3k driver load 954 * patch and sysconfig files */ 955 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001) 956 return -ENODEV; 957 } 958 959 data = kzalloc(sizeof(*data), GFP_KERNEL); 960 if (!data) 961 return -ENOMEM; 962 963 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { 964 ep_desc = &intf->cur_altsetting->endpoint[i].desc; 965 966 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) { 967 data->intr_ep = ep_desc; 968 continue; 969 } 970 971 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) { 972 data->bulk_tx_ep = ep_desc; 973 continue; 974 } 975 976 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) { 977 data->bulk_rx_ep = ep_desc; 978 continue; 979 } 980 } 981 982 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) { 983 kfree(data); 984 return -ENODEV; 985 } 986 987 data->cmdreq_type = USB_TYPE_CLASS; 988 989 data->udev = interface_to_usbdev(intf); 990 data->intf = intf; 991 992 spin_lock_init(&data->lock); 993 994 INIT_WORK(&data->work, btusb_work); 995 INIT_WORK(&data->waker, btusb_waker); 996 spin_lock_init(&data->txlock); 997 998 init_usb_anchor(&data->tx_anchor); 999 init_usb_anchor(&data->intr_anchor); 1000 init_usb_anchor(&data->bulk_anchor); 1001 init_usb_anchor(&data->isoc_anchor); 1002 init_usb_anchor(&data->deferred); 1003 1004 hdev = hci_alloc_dev(); 1005 if (!hdev) { 1006 kfree(data); 1007 return -ENOMEM; 1008 } 1009 1010 hdev->bus = HCI_USB; 1011 hci_set_drvdata(hdev, data); 1012 1013 data->hdev = hdev; 1014 1015 SET_HCIDEV_DEV(hdev, &intf->dev); 1016 1017 hdev->open = btusb_open; 1018 hdev->close = btusb_close; 1019 hdev->flush = btusb_flush; 1020 hdev->send = btusb_send_frame; 1021 hdev->notify = btusb_notify; 1022 1023 /* Interface numbers are hardcoded in the specification */ 1024 data->isoc = usb_ifnum_to_if(data->udev, 1); 1025 1026 if (!reset) 1027 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); 1028 1029 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) { 1030 if (!disable_scofix) 1031 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks); 1032 } 1033 1034 if (id->driver_info & BTUSB_BROKEN_ISOC) 1035 data->isoc = NULL; 1036 1037 if (id->driver_info & BTUSB_DIGIANSWER) { 1038 data->cmdreq_type = USB_TYPE_VENDOR; 1039 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); 1040 } 1041 1042 if (id->driver_info & BTUSB_CSR) { 1043 struct usb_device *udev = data->udev; 1044 1045 /* Old firmware would otherwise execute USB reset */ 1046 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117) 1047 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); 1048 } 1049 1050 if (id->driver_info & BTUSB_SNIFFER) { 1051 struct usb_device *udev = data->udev; 1052 1053 /* New sniffer firmware has crippled HCI interface */ 1054 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997) 1055 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks); 1056 1057 data->isoc = NULL; 1058 } 1059 1060 if (id->driver_info & BTUSB_BCM92035) { 1061 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 }; 1062 struct sk_buff *skb; 1063 1064 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL); 1065 if (skb) { 1066 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd)); 1067 skb_queue_tail(&hdev->driver_init, skb); 1068 } 1069 } 1070 1071 if (data->isoc) { 1072 err = usb_driver_claim_interface(&btusb_driver, 1073 data->isoc, data); 1074 if (err < 0) { 1075 hci_free_dev(hdev); 1076 kfree(data); 1077 return err; 1078 } 1079 } 1080 1081 err = hci_register_dev(hdev); 1082 if (err < 0) { 1083 hci_free_dev(hdev); 1084 kfree(data); 1085 return err; 1086 } 1087 1088 usb_set_intfdata(intf, data); 1089 1090 return 0; 1091 } 1092 1093 static void btusb_disconnect(struct usb_interface *intf) 1094 { 1095 struct btusb_data *data = usb_get_intfdata(intf); 1096 struct hci_dev *hdev; 1097 1098 BT_DBG("intf %p", intf); 1099 1100 if (!data) 1101 return; 1102 1103 hdev = data->hdev; 1104 usb_set_intfdata(data->intf, NULL); 1105 1106 if (data->isoc) 1107 usb_set_intfdata(data->isoc, NULL); 1108 1109 hci_unregister_dev(hdev); 1110 1111 if (intf == data->isoc) 1112 usb_driver_release_interface(&btusb_driver, data->intf); 1113 else if (data->isoc) 1114 usb_driver_release_interface(&btusb_driver, data->isoc); 1115 1116 hci_free_dev(hdev); 1117 kfree(data); 1118 } 1119 1120 #ifdef CONFIG_PM 1121 static int btusb_suspend(struct usb_interface *intf, pm_message_t message) 1122 { 1123 struct btusb_data *data = usb_get_intfdata(intf); 1124 1125 BT_DBG("intf %p", intf); 1126 1127 if (data->suspend_count++) 1128 return 0; 1129 1130 spin_lock_irq(&data->txlock); 1131 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) { 1132 set_bit(BTUSB_SUSPENDING, &data->flags); 1133 spin_unlock_irq(&data->txlock); 1134 } else { 1135 spin_unlock_irq(&data->txlock); 1136 data->suspend_count--; 1137 return -EBUSY; 1138 } 1139 1140 cancel_work_sync(&data->work); 1141 1142 btusb_stop_traffic(data); 1143 usb_kill_anchored_urbs(&data->tx_anchor); 1144 1145 return 0; 1146 } 1147 1148 static void play_deferred(struct btusb_data *data) 1149 { 1150 struct urb *urb; 1151 int err; 1152 1153 while ((urb = usb_get_from_anchor(&data->deferred))) { 1154 err = usb_submit_urb(urb, GFP_ATOMIC); 1155 if (err < 0) 1156 break; 1157 1158 data->tx_in_flight++; 1159 } 1160 usb_scuttle_anchored_urbs(&data->deferred); 1161 } 1162 1163 static int btusb_resume(struct usb_interface *intf) 1164 { 1165 struct btusb_data *data = usb_get_intfdata(intf); 1166 struct hci_dev *hdev = data->hdev; 1167 int err = 0; 1168 1169 BT_DBG("intf %p", intf); 1170 1171 if (--data->suspend_count) 1172 return 0; 1173 1174 if (!test_bit(HCI_RUNNING, &hdev->flags)) 1175 goto done; 1176 1177 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) { 1178 err = btusb_submit_intr_urb(hdev, GFP_NOIO); 1179 if (err < 0) { 1180 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 1181 goto failed; 1182 } 1183 } 1184 1185 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) { 1186 err = btusb_submit_bulk_urb(hdev, GFP_NOIO); 1187 if (err < 0) { 1188 clear_bit(BTUSB_BULK_RUNNING, &data->flags); 1189 goto failed; 1190 } 1191 1192 btusb_submit_bulk_urb(hdev, GFP_NOIO); 1193 } 1194 1195 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) { 1196 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0) 1197 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1198 else 1199 btusb_submit_isoc_urb(hdev, GFP_NOIO); 1200 } 1201 1202 spin_lock_irq(&data->txlock); 1203 play_deferred(data); 1204 clear_bit(BTUSB_SUSPENDING, &data->flags); 1205 spin_unlock_irq(&data->txlock); 1206 schedule_work(&data->work); 1207 1208 return 0; 1209 1210 failed: 1211 usb_scuttle_anchored_urbs(&data->deferred); 1212 done: 1213 spin_lock_irq(&data->txlock); 1214 clear_bit(BTUSB_SUSPENDING, &data->flags); 1215 spin_unlock_irq(&data->txlock); 1216 1217 return err; 1218 } 1219 #endif 1220 1221 static struct usb_driver btusb_driver = { 1222 .name = "btusb", 1223 .probe = btusb_probe, 1224 .disconnect = btusb_disconnect, 1225 #ifdef CONFIG_PM 1226 .suspend = btusb_suspend, 1227 .resume = btusb_resume, 1228 #endif 1229 .id_table = btusb_table, 1230 .supports_autosuspend = 1, 1231 .disable_hub_initiated_lpm = 1, 1232 }; 1233 1234 module_usb_driver(btusb_driver); 1235 1236 module_param(ignore_dga, bool, 0644); 1237 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001"); 1238 1239 module_param(ignore_csr, bool, 0644); 1240 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001"); 1241 1242 module_param(ignore_sniffer, bool, 0644); 1243 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002"); 1244 1245 module_param(disable_scofix, bool, 0644); 1246 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size"); 1247 1248 module_param(force_scofix, bool, 0644); 1249 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size"); 1250 1251 module_param(reset, bool, 0644); 1252 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization"); 1253 1254 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); 1255 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION); 1256 MODULE_VERSION(VERSION); 1257 MODULE_LICENSE("GPL"); 1258