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(0x0489, 0xe042) }, 105 { USB_DEVICE(0x0a5c, 0x21e3) }, 106 { USB_DEVICE(0x0a5c, 0x21e6) }, 107 { USB_DEVICE(0x0a5c, 0x21e8) }, 108 { USB_DEVICE(0x0a5c, 0x21f3) }, 109 { USB_DEVICE(0x413c, 0x8197) }, 110 111 /* Foxconn - Hon Hai */ 112 { USB_DEVICE(0x0489, 0xe033) }, 113 114 { } /* Terminating entry */ 115 }; 116 117 MODULE_DEVICE_TABLE(usb, btusb_table); 118 119 static struct usb_device_id blacklist_table[] = { 120 /* CSR BlueCore devices */ 121 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR }, 122 123 /* Broadcom BCM2033 without firmware */ 124 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE }, 125 126 /* Atheros 3011 with sflash firmware */ 127 { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE }, 128 { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE }, 129 { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE }, 130 { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE }, 131 132 /* Atheros AR9285 Malbec with sflash firmware */ 133 { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE }, 134 135 /* Atheros 3012 with sflash firmware */ 136 { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 }, 137 { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 }, 138 { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 }, 139 { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 }, 140 { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 }, 141 { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 }, 142 143 /* Atheros AR5BBU12 with sflash firmware */ 144 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE }, 145 146 /* Broadcom BCM2035 */ 147 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU }, 148 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU }, 149 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 }, 150 151 /* Broadcom BCM2045 */ 152 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU }, 153 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU }, 154 155 /* IBM/Lenovo ThinkPad with Broadcom chip */ 156 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU }, 157 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU }, 158 159 /* HP laptop with Broadcom chip */ 160 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU }, 161 162 /* Dell laptop with Broadcom chip */ 163 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU }, 164 165 /* Dell Wireless 370 and 410 devices */ 166 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU }, 167 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU }, 168 169 /* Belkin F8T012 and F8T013 devices */ 170 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU }, 171 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU }, 172 173 /* Asus WL-BTD202 device */ 174 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU }, 175 176 /* Kensington Bluetooth USB adapter */ 177 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU }, 178 179 /* RTX Telecom based adapters with buggy SCO support */ 180 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC }, 181 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC }, 182 183 /* CONWISE Technology based adapters with buggy SCO support */ 184 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC }, 185 186 /* Digianswer devices */ 187 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER }, 188 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE }, 189 190 /* CSR BlueCore Bluetooth Sniffer */ 191 { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER }, 192 193 /* Frontline ComProbe Bluetooth Sniffer */ 194 { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER }, 195 196 { } /* Terminating entry */ 197 }; 198 199 #define BTUSB_MAX_ISOC_FRAMES 10 200 201 #define BTUSB_INTR_RUNNING 0 202 #define BTUSB_BULK_RUNNING 1 203 #define BTUSB_ISOC_RUNNING 2 204 #define BTUSB_SUSPENDING 3 205 #define BTUSB_DID_ISO_RESUME 4 206 207 struct btusb_data { 208 struct hci_dev *hdev; 209 struct usb_device *udev; 210 struct usb_interface *intf; 211 struct usb_interface *isoc; 212 213 spinlock_t lock; 214 215 unsigned long flags; 216 217 struct work_struct work; 218 struct work_struct waker; 219 220 struct usb_anchor tx_anchor; 221 struct usb_anchor intr_anchor; 222 struct usb_anchor bulk_anchor; 223 struct usb_anchor isoc_anchor; 224 struct usb_anchor deferred; 225 int tx_in_flight; 226 spinlock_t txlock; 227 228 struct usb_endpoint_descriptor *intr_ep; 229 struct usb_endpoint_descriptor *bulk_tx_ep; 230 struct usb_endpoint_descriptor *bulk_rx_ep; 231 struct usb_endpoint_descriptor *isoc_tx_ep; 232 struct usb_endpoint_descriptor *isoc_rx_ep; 233 234 __u8 cmdreq_type; 235 236 unsigned int sco_num; 237 int isoc_altsetting; 238 int suspend_count; 239 }; 240 241 static int inc_tx(struct btusb_data *data) 242 { 243 unsigned long flags; 244 int rv; 245 246 spin_lock_irqsave(&data->txlock, flags); 247 rv = test_bit(BTUSB_SUSPENDING, &data->flags); 248 if (!rv) 249 data->tx_in_flight++; 250 spin_unlock_irqrestore(&data->txlock, flags); 251 252 return rv; 253 } 254 255 static void btusb_intr_complete(struct urb *urb) 256 { 257 struct hci_dev *hdev = urb->context; 258 struct btusb_data *data = hci_get_drvdata(hdev); 259 int err; 260 261 BT_DBG("%s urb %p status %d count %d", hdev->name, 262 urb, urb->status, urb->actual_length); 263 264 if (!test_bit(HCI_RUNNING, &hdev->flags)) 265 return; 266 267 if (urb->status == 0) { 268 hdev->stat.byte_rx += urb->actual_length; 269 270 if (hci_recv_fragment(hdev, HCI_EVENT_PKT, 271 urb->transfer_buffer, 272 urb->actual_length) < 0) { 273 BT_ERR("%s corrupted event packet", hdev->name); 274 hdev->stat.err_rx++; 275 } 276 } 277 278 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags)) 279 return; 280 281 usb_mark_last_busy(data->udev); 282 usb_anchor_urb(urb, &data->intr_anchor); 283 284 err = usb_submit_urb(urb, GFP_ATOMIC); 285 if (err < 0) { 286 /* -EPERM: urb is being killed; 287 * -ENODEV: device got disconnected */ 288 if (err != -EPERM && err != -ENODEV) 289 BT_ERR("%s urb %p failed to resubmit (%d)", 290 hdev->name, urb, -err); 291 usb_unanchor_urb(urb); 292 } 293 } 294 295 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags) 296 { 297 struct btusb_data *data = hci_get_drvdata(hdev); 298 struct urb *urb; 299 unsigned char *buf; 300 unsigned int pipe; 301 int err, size; 302 303 BT_DBG("%s", hdev->name); 304 305 if (!data->intr_ep) 306 return -ENODEV; 307 308 urb = usb_alloc_urb(0, mem_flags); 309 if (!urb) 310 return -ENOMEM; 311 312 size = le16_to_cpu(data->intr_ep->wMaxPacketSize); 313 314 buf = kmalloc(size, mem_flags); 315 if (!buf) { 316 usb_free_urb(urb); 317 return -ENOMEM; 318 } 319 320 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress); 321 322 usb_fill_int_urb(urb, data->udev, pipe, buf, size, 323 btusb_intr_complete, hdev, 324 data->intr_ep->bInterval); 325 326 urb->transfer_flags |= URB_FREE_BUFFER; 327 328 usb_anchor_urb(urb, &data->intr_anchor); 329 330 err = usb_submit_urb(urb, mem_flags); 331 if (err < 0) { 332 if (err != -EPERM && err != -ENODEV) 333 BT_ERR("%s urb %p submission failed (%d)", 334 hdev->name, urb, -err); 335 usb_unanchor_urb(urb); 336 } 337 338 usb_free_urb(urb); 339 340 return err; 341 } 342 343 static void btusb_bulk_complete(struct urb *urb) 344 { 345 struct hci_dev *hdev = urb->context; 346 struct btusb_data *data = hci_get_drvdata(hdev); 347 int err; 348 349 BT_DBG("%s urb %p status %d count %d", hdev->name, 350 urb, urb->status, urb->actual_length); 351 352 if (!test_bit(HCI_RUNNING, &hdev->flags)) 353 return; 354 355 if (urb->status == 0) { 356 hdev->stat.byte_rx += urb->actual_length; 357 358 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT, 359 urb->transfer_buffer, 360 urb->actual_length) < 0) { 361 BT_ERR("%s corrupted ACL packet", hdev->name); 362 hdev->stat.err_rx++; 363 } 364 } 365 366 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags)) 367 return; 368 369 usb_anchor_urb(urb, &data->bulk_anchor); 370 usb_mark_last_busy(data->udev); 371 372 err = usb_submit_urb(urb, GFP_ATOMIC); 373 if (err < 0) { 374 /* -EPERM: urb is being killed; 375 * -ENODEV: device got disconnected */ 376 if (err != -EPERM && err != -ENODEV) 377 BT_ERR("%s urb %p failed to resubmit (%d)", 378 hdev->name, urb, -err); 379 usb_unanchor_urb(urb); 380 } 381 } 382 383 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags) 384 { 385 struct btusb_data *data = hci_get_drvdata(hdev); 386 struct urb *urb; 387 unsigned char *buf; 388 unsigned int pipe; 389 int err, size = HCI_MAX_FRAME_SIZE; 390 391 BT_DBG("%s", hdev->name); 392 393 if (!data->bulk_rx_ep) 394 return -ENODEV; 395 396 urb = usb_alloc_urb(0, mem_flags); 397 if (!urb) 398 return -ENOMEM; 399 400 buf = kmalloc(size, mem_flags); 401 if (!buf) { 402 usb_free_urb(urb); 403 return -ENOMEM; 404 } 405 406 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress); 407 408 usb_fill_bulk_urb(urb, data->udev, pipe, 409 buf, size, btusb_bulk_complete, hdev); 410 411 urb->transfer_flags |= URB_FREE_BUFFER; 412 413 usb_mark_last_busy(data->udev); 414 usb_anchor_urb(urb, &data->bulk_anchor); 415 416 err = usb_submit_urb(urb, mem_flags); 417 if (err < 0) { 418 if (err != -EPERM && err != -ENODEV) 419 BT_ERR("%s urb %p submission failed (%d)", 420 hdev->name, urb, -err); 421 usb_unanchor_urb(urb); 422 } 423 424 usb_free_urb(urb); 425 426 return err; 427 } 428 429 static void btusb_isoc_complete(struct urb *urb) 430 { 431 struct hci_dev *hdev = urb->context; 432 struct btusb_data *data = hci_get_drvdata(hdev); 433 int i, err; 434 435 BT_DBG("%s urb %p status %d count %d", hdev->name, 436 urb, urb->status, urb->actual_length); 437 438 if (!test_bit(HCI_RUNNING, &hdev->flags)) 439 return; 440 441 if (urb->status == 0) { 442 for (i = 0; i < urb->number_of_packets; i++) { 443 unsigned int offset = urb->iso_frame_desc[i].offset; 444 unsigned int length = urb->iso_frame_desc[i].actual_length; 445 446 if (urb->iso_frame_desc[i].status) 447 continue; 448 449 hdev->stat.byte_rx += length; 450 451 if (hci_recv_fragment(hdev, HCI_SCODATA_PKT, 452 urb->transfer_buffer + offset, 453 length) < 0) { 454 BT_ERR("%s corrupted SCO packet", hdev->name); 455 hdev->stat.err_rx++; 456 } 457 } 458 } 459 460 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags)) 461 return; 462 463 usb_anchor_urb(urb, &data->isoc_anchor); 464 465 err = usb_submit_urb(urb, GFP_ATOMIC); 466 if (err < 0) { 467 /* -EPERM: urb is being killed; 468 * -ENODEV: device got disconnected */ 469 if (err != -EPERM && err != -ENODEV) 470 BT_ERR("%s urb %p failed to resubmit (%d)", 471 hdev->name, urb, -err); 472 usb_unanchor_urb(urb); 473 } 474 } 475 476 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu) 477 { 478 int i, offset = 0; 479 480 BT_DBG("len %d mtu %d", len, mtu); 481 482 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu; 483 i++, offset += mtu, len -= mtu) { 484 urb->iso_frame_desc[i].offset = offset; 485 urb->iso_frame_desc[i].length = mtu; 486 } 487 488 if (len && i < BTUSB_MAX_ISOC_FRAMES) { 489 urb->iso_frame_desc[i].offset = offset; 490 urb->iso_frame_desc[i].length = len; 491 i++; 492 } 493 494 urb->number_of_packets = i; 495 } 496 497 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags) 498 { 499 struct btusb_data *data = hci_get_drvdata(hdev); 500 struct urb *urb; 501 unsigned char *buf; 502 unsigned int pipe; 503 int err, size; 504 505 BT_DBG("%s", hdev->name); 506 507 if (!data->isoc_rx_ep) 508 return -ENODEV; 509 510 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags); 511 if (!urb) 512 return -ENOMEM; 513 514 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) * 515 BTUSB_MAX_ISOC_FRAMES; 516 517 buf = kmalloc(size, mem_flags); 518 if (!buf) { 519 usb_free_urb(urb); 520 return -ENOMEM; 521 } 522 523 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress); 524 525 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete, 526 hdev, data->isoc_rx_ep->bInterval); 527 528 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP; 529 530 __fill_isoc_descriptor(urb, size, 531 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize)); 532 533 usb_anchor_urb(urb, &data->isoc_anchor); 534 535 err = usb_submit_urb(urb, mem_flags); 536 if (err < 0) { 537 if (err != -EPERM && err != -ENODEV) 538 BT_ERR("%s urb %p submission failed (%d)", 539 hdev->name, urb, -err); 540 usb_unanchor_urb(urb); 541 } 542 543 usb_free_urb(urb); 544 545 return err; 546 } 547 548 static void btusb_tx_complete(struct urb *urb) 549 { 550 struct sk_buff *skb = urb->context; 551 struct hci_dev *hdev = (struct hci_dev *) skb->dev; 552 struct btusb_data *data = hci_get_drvdata(hdev); 553 554 BT_DBG("%s urb %p status %d count %d", hdev->name, 555 urb, urb->status, urb->actual_length); 556 557 if (!test_bit(HCI_RUNNING, &hdev->flags)) 558 goto done; 559 560 if (!urb->status) 561 hdev->stat.byte_tx += urb->transfer_buffer_length; 562 else 563 hdev->stat.err_tx++; 564 565 done: 566 spin_lock(&data->txlock); 567 data->tx_in_flight--; 568 spin_unlock(&data->txlock); 569 570 kfree(urb->setup_packet); 571 572 kfree_skb(skb); 573 } 574 575 static void btusb_isoc_tx_complete(struct urb *urb) 576 { 577 struct sk_buff *skb = urb->context; 578 struct hci_dev *hdev = (struct hci_dev *) skb->dev; 579 580 BT_DBG("%s urb %p status %d count %d", hdev->name, 581 urb, urb->status, urb->actual_length); 582 583 if (!test_bit(HCI_RUNNING, &hdev->flags)) 584 goto done; 585 586 if (!urb->status) 587 hdev->stat.byte_tx += urb->transfer_buffer_length; 588 else 589 hdev->stat.err_tx++; 590 591 done: 592 kfree(urb->setup_packet); 593 594 kfree_skb(skb); 595 } 596 597 static int btusb_open(struct hci_dev *hdev) 598 { 599 struct btusb_data *data = hci_get_drvdata(hdev); 600 int err; 601 602 BT_DBG("%s", hdev->name); 603 604 err = usb_autopm_get_interface(data->intf); 605 if (err < 0) 606 return err; 607 608 data->intf->needs_remote_wakeup = 1; 609 610 if (test_and_set_bit(HCI_RUNNING, &hdev->flags)) 611 goto done; 612 613 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags)) 614 goto done; 615 616 err = btusb_submit_intr_urb(hdev, GFP_KERNEL); 617 if (err < 0) 618 goto failed; 619 620 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL); 621 if (err < 0) { 622 usb_kill_anchored_urbs(&data->intr_anchor); 623 goto failed; 624 } 625 626 set_bit(BTUSB_BULK_RUNNING, &data->flags); 627 btusb_submit_bulk_urb(hdev, GFP_KERNEL); 628 629 done: 630 usb_autopm_put_interface(data->intf); 631 return 0; 632 633 failed: 634 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 635 clear_bit(HCI_RUNNING, &hdev->flags); 636 usb_autopm_put_interface(data->intf); 637 return err; 638 } 639 640 static void btusb_stop_traffic(struct btusb_data *data) 641 { 642 usb_kill_anchored_urbs(&data->intr_anchor); 643 usb_kill_anchored_urbs(&data->bulk_anchor); 644 usb_kill_anchored_urbs(&data->isoc_anchor); 645 } 646 647 static int btusb_close(struct hci_dev *hdev) 648 { 649 struct btusb_data *data = hci_get_drvdata(hdev); 650 int err; 651 652 BT_DBG("%s", hdev->name); 653 654 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags)) 655 return 0; 656 657 cancel_work_sync(&data->work); 658 cancel_work_sync(&data->waker); 659 660 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 661 clear_bit(BTUSB_BULK_RUNNING, &data->flags); 662 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 663 664 btusb_stop_traffic(data); 665 err = usb_autopm_get_interface(data->intf); 666 if (err < 0) 667 goto failed; 668 669 data->intf->needs_remote_wakeup = 0; 670 usb_autopm_put_interface(data->intf); 671 672 failed: 673 usb_scuttle_anchored_urbs(&data->deferred); 674 return 0; 675 } 676 677 static int btusb_flush(struct hci_dev *hdev) 678 { 679 struct btusb_data *data = hci_get_drvdata(hdev); 680 681 BT_DBG("%s", hdev->name); 682 683 usb_kill_anchored_urbs(&data->tx_anchor); 684 685 return 0; 686 } 687 688 static int btusb_send_frame(struct sk_buff *skb) 689 { 690 struct hci_dev *hdev = (struct hci_dev *) skb->dev; 691 struct btusb_data *data = hci_get_drvdata(hdev); 692 struct usb_ctrlrequest *dr; 693 struct urb *urb; 694 unsigned int pipe; 695 int err; 696 697 BT_DBG("%s", hdev->name); 698 699 if (!test_bit(HCI_RUNNING, &hdev->flags)) 700 return -EBUSY; 701 702 switch (bt_cb(skb)->pkt_type) { 703 case HCI_COMMAND_PKT: 704 urb = usb_alloc_urb(0, GFP_ATOMIC); 705 if (!urb) 706 return -ENOMEM; 707 708 dr = kmalloc(sizeof(*dr), GFP_ATOMIC); 709 if (!dr) { 710 usb_free_urb(urb); 711 return -ENOMEM; 712 } 713 714 dr->bRequestType = data->cmdreq_type; 715 dr->bRequest = 0; 716 dr->wIndex = 0; 717 dr->wValue = 0; 718 dr->wLength = __cpu_to_le16(skb->len); 719 720 pipe = usb_sndctrlpipe(data->udev, 0x00); 721 722 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr, 723 skb->data, skb->len, btusb_tx_complete, skb); 724 725 hdev->stat.cmd_tx++; 726 break; 727 728 case HCI_ACLDATA_PKT: 729 if (!data->bulk_tx_ep) 730 return -ENODEV; 731 732 urb = usb_alloc_urb(0, GFP_ATOMIC); 733 if (!urb) 734 return -ENOMEM; 735 736 pipe = usb_sndbulkpipe(data->udev, 737 data->bulk_tx_ep->bEndpointAddress); 738 739 usb_fill_bulk_urb(urb, data->udev, pipe, 740 skb->data, skb->len, btusb_tx_complete, skb); 741 742 hdev->stat.acl_tx++; 743 break; 744 745 case HCI_SCODATA_PKT: 746 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1) 747 return -ENODEV; 748 749 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC); 750 if (!urb) 751 return -ENOMEM; 752 753 pipe = usb_sndisocpipe(data->udev, 754 data->isoc_tx_ep->bEndpointAddress); 755 756 usb_fill_int_urb(urb, data->udev, pipe, 757 skb->data, skb->len, btusb_isoc_tx_complete, 758 skb, data->isoc_tx_ep->bInterval); 759 760 urb->transfer_flags = URB_ISO_ASAP; 761 762 __fill_isoc_descriptor(urb, skb->len, 763 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize)); 764 765 hdev->stat.sco_tx++; 766 goto skip_waking; 767 768 default: 769 return -EILSEQ; 770 } 771 772 err = inc_tx(data); 773 if (err) { 774 usb_anchor_urb(urb, &data->deferred); 775 schedule_work(&data->waker); 776 err = 0; 777 goto done; 778 } 779 780 skip_waking: 781 usb_anchor_urb(urb, &data->tx_anchor); 782 783 err = usb_submit_urb(urb, GFP_ATOMIC); 784 if (err < 0) { 785 if (err != -EPERM && err != -ENODEV) 786 BT_ERR("%s urb %p submission failed (%d)", 787 hdev->name, urb, -err); 788 kfree(urb->setup_packet); 789 usb_unanchor_urb(urb); 790 } else { 791 usb_mark_last_busy(data->udev); 792 } 793 794 done: 795 usb_free_urb(urb); 796 return err; 797 } 798 799 static void btusb_notify(struct hci_dev *hdev, unsigned int evt) 800 { 801 struct btusb_data *data = hci_get_drvdata(hdev); 802 803 BT_DBG("%s evt %d", hdev->name, evt); 804 805 if (hdev->conn_hash.sco_num != data->sco_num) { 806 data->sco_num = hdev->conn_hash.sco_num; 807 schedule_work(&data->work); 808 } 809 } 810 811 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting) 812 { 813 struct btusb_data *data = hci_get_drvdata(hdev); 814 struct usb_interface *intf = data->isoc; 815 struct usb_endpoint_descriptor *ep_desc; 816 int i, err; 817 818 if (!data->isoc) 819 return -ENODEV; 820 821 err = usb_set_interface(data->udev, 1, altsetting); 822 if (err < 0) { 823 BT_ERR("%s setting interface failed (%d)", hdev->name, -err); 824 return err; 825 } 826 827 data->isoc_altsetting = altsetting; 828 829 data->isoc_tx_ep = NULL; 830 data->isoc_rx_ep = NULL; 831 832 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { 833 ep_desc = &intf->cur_altsetting->endpoint[i].desc; 834 835 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) { 836 data->isoc_tx_ep = ep_desc; 837 continue; 838 } 839 840 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) { 841 data->isoc_rx_ep = ep_desc; 842 continue; 843 } 844 } 845 846 if (!data->isoc_tx_ep || !data->isoc_rx_ep) { 847 BT_ERR("%s invalid SCO descriptors", hdev->name); 848 return -ENODEV; 849 } 850 851 return 0; 852 } 853 854 static void btusb_work(struct work_struct *work) 855 { 856 struct btusb_data *data = container_of(work, struct btusb_data, work); 857 struct hci_dev *hdev = data->hdev; 858 int err; 859 860 if (hdev->conn_hash.sco_num > 0) { 861 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) { 862 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf); 863 if (err < 0) { 864 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 865 usb_kill_anchored_urbs(&data->isoc_anchor); 866 return; 867 } 868 869 set_bit(BTUSB_DID_ISO_RESUME, &data->flags); 870 } 871 if (data->isoc_altsetting != 2) { 872 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 873 usb_kill_anchored_urbs(&data->isoc_anchor); 874 875 if (__set_isoc_interface(hdev, 2) < 0) 876 return; 877 } 878 879 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) { 880 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0) 881 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 882 else 883 btusb_submit_isoc_urb(hdev, GFP_KERNEL); 884 } 885 } else { 886 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 887 usb_kill_anchored_urbs(&data->isoc_anchor); 888 889 __set_isoc_interface(hdev, 0); 890 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags)) 891 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf); 892 } 893 } 894 895 static void btusb_waker(struct work_struct *work) 896 { 897 struct btusb_data *data = container_of(work, struct btusb_data, waker); 898 int err; 899 900 err = usb_autopm_get_interface(data->intf); 901 if (err < 0) 902 return; 903 904 usb_autopm_put_interface(data->intf); 905 } 906 907 static int btusb_probe(struct usb_interface *intf, 908 const struct usb_device_id *id) 909 { 910 struct usb_endpoint_descriptor *ep_desc; 911 struct btusb_data *data; 912 struct hci_dev *hdev; 913 int i, err; 914 915 BT_DBG("intf %p id %p", intf, id); 916 917 /* interface numbers are hardcoded in the spec */ 918 if (intf->cur_altsetting->desc.bInterfaceNumber != 0) 919 return -ENODEV; 920 921 if (!id->driver_info) { 922 const struct usb_device_id *match; 923 match = usb_match_id(intf, blacklist_table); 924 if (match) 925 id = match; 926 } 927 928 if (id->driver_info == BTUSB_IGNORE) 929 return -ENODEV; 930 931 if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER) 932 return -ENODEV; 933 934 if (ignore_csr && id->driver_info & BTUSB_CSR) 935 return -ENODEV; 936 937 if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER) 938 return -ENODEV; 939 940 if (id->driver_info & BTUSB_ATH3012) { 941 struct usb_device *udev = interface_to_usbdev(intf); 942 943 /* Old firmware would otherwise let ath3k driver load 944 * patch and sysconfig files */ 945 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001) 946 return -ENODEV; 947 } 948 949 data = kzalloc(sizeof(*data), GFP_KERNEL); 950 if (!data) 951 return -ENOMEM; 952 953 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { 954 ep_desc = &intf->cur_altsetting->endpoint[i].desc; 955 956 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) { 957 data->intr_ep = ep_desc; 958 continue; 959 } 960 961 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) { 962 data->bulk_tx_ep = ep_desc; 963 continue; 964 } 965 966 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) { 967 data->bulk_rx_ep = ep_desc; 968 continue; 969 } 970 } 971 972 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) { 973 kfree(data); 974 return -ENODEV; 975 } 976 977 data->cmdreq_type = USB_TYPE_CLASS; 978 979 data->udev = interface_to_usbdev(intf); 980 data->intf = intf; 981 982 spin_lock_init(&data->lock); 983 984 INIT_WORK(&data->work, btusb_work); 985 INIT_WORK(&data->waker, btusb_waker); 986 spin_lock_init(&data->txlock); 987 988 init_usb_anchor(&data->tx_anchor); 989 init_usb_anchor(&data->intr_anchor); 990 init_usb_anchor(&data->bulk_anchor); 991 init_usb_anchor(&data->isoc_anchor); 992 init_usb_anchor(&data->deferred); 993 994 hdev = hci_alloc_dev(); 995 if (!hdev) { 996 kfree(data); 997 return -ENOMEM; 998 } 999 1000 hdev->bus = HCI_USB; 1001 hci_set_drvdata(hdev, data); 1002 1003 data->hdev = hdev; 1004 1005 SET_HCIDEV_DEV(hdev, &intf->dev); 1006 1007 hdev->open = btusb_open; 1008 hdev->close = btusb_close; 1009 hdev->flush = btusb_flush; 1010 hdev->send = btusb_send_frame; 1011 hdev->notify = btusb_notify; 1012 1013 /* Interface numbers are hardcoded in the specification */ 1014 data->isoc = usb_ifnum_to_if(data->udev, 1); 1015 1016 if (!reset) 1017 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks); 1018 1019 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) { 1020 if (!disable_scofix) 1021 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks); 1022 } 1023 1024 if (id->driver_info & BTUSB_BROKEN_ISOC) 1025 data->isoc = NULL; 1026 1027 if (id->driver_info & BTUSB_DIGIANSWER) { 1028 data->cmdreq_type = USB_TYPE_VENDOR; 1029 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks); 1030 } 1031 1032 if (id->driver_info & BTUSB_CSR) { 1033 struct usb_device *udev = data->udev; 1034 1035 /* Old firmware would otherwise execute USB reset */ 1036 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117) 1037 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks); 1038 } 1039 1040 if (id->driver_info & BTUSB_SNIFFER) { 1041 struct usb_device *udev = data->udev; 1042 1043 /* New sniffer firmware has crippled HCI interface */ 1044 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997) 1045 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks); 1046 1047 data->isoc = NULL; 1048 } 1049 1050 if (id->driver_info & BTUSB_BCM92035) { 1051 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 }; 1052 struct sk_buff *skb; 1053 1054 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL); 1055 if (skb) { 1056 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd)); 1057 skb_queue_tail(&hdev->driver_init, skb); 1058 } 1059 } 1060 1061 if (data->isoc) { 1062 err = usb_driver_claim_interface(&btusb_driver, 1063 data->isoc, data); 1064 if (err < 0) { 1065 hci_free_dev(hdev); 1066 kfree(data); 1067 return err; 1068 } 1069 } 1070 1071 err = hci_register_dev(hdev); 1072 if (err < 0) { 1073 hci_free_dev(hdev); 1074 kfree(data); 1075 return err; 1076 } 1077 1078 usb_set_intfdata(intf, data); 1079 1080 return 0; 1081 } 1082 1083 static void btusb_disconnect(struct usb_interface *intf) 1084 { 1085 struct btusb_data *data = usb_get_intfdata(intf); 1086 struct hci_dev *hdev; 1087 1088 BT_DBG("intf %p", intf); 1089 1090 if (!data) 1091 return; 1092 1093 hdev = data->hdev; 1094 usb_set_intfdata(data->intf, NULL); 1095 1096 if (data->isoc) 1097 usb_set_intfdata(data->isoc, NULL); 1098 1099 hci_unregister_dev(hdev); 1100 1101 if (intf == data->isoc) 1102 usb_driver_release_interface(&btusb_driver, data->intf); 1103 else if (data->isoc) 1104 usb_driver_release_interface(&btusb_driver, data->isoc); 1105 1106 hci_free_dev(hdev); 1107 kfree(data); 1108 } 1109 1110 #ifdef CONFIG_PM 1111 static int btusb_suspend(struct usb_interface *intf, pm_message_t message) 1112 { 1113 struct btusb_data *data = usb_get_intfdata(intf); 1114 1115 BT_DBG("intf %p", intf); 1116 1117 if (data->suspend_count++) 1118 return 0; 1119 1120 spin_lock_irq(&data->txlock); 1121 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) { 1122 set_bit(BTUSB_SUSPENDING, &data->flags); 1123 spin_unlock_irq(&data->txlock); 1124 } else { 1125 spin_unlock_irq(&data->txlock); 1126 data->suspend_count--; 1127 return -EBUSY; 1128 } 1129 1130 cancel_work_sync(&data->work); 1131 1132 btusb_stop_traffic(data); 1133 usb_kill_anchored_urbs(&data->tx_anchor); 1134 1135 return 0; 1136 } 1137 1138 static void play_deferred(struct btusb_data *data) 1139 { 1140 struct urb *urb; 1141 int err; 1142 1143 while ((urb = usb_get_from_anchor(&data->deferred))) { 1144 err = usb_submit_urb(urb, GFP_ATOMIC); 1145 if (err < 0) 1146 break; 1147 1148 data->tx_in_flight++; 1149 } 1150 usb_scuttle_anchored_urbs(&data->deferred); 1151 } 1152 1153 static int btusb_resume(struct usb_interface *intf) 1154 { 1155 struct btusb_data *data = usb_get_intfdata(intf); 1156 struct hci_dev *hdev = data->hdev; 1157 int err = 0; 1158 1159 BT_DBG("intf %p", intf); 1160 1161 if (--data->suspend_count) 1162 return 0; 1163 1164 if (!test_bit(HCI_RUNNING, &hdev->flags)) 1165 goto done; 1166 1167 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) { 1168 err = btusb_submit_intr_urb(hdev, GFP_NOIO); 1169 if (err < 0) { 1170 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 1171 goto failed; 1172 } 1173 } 1174 1175 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) { 1176 err = btusb_submit_bulk_urb(hdev, GFP_NOIO); 1177 if (err < 0) { 1178 clear_bit(BTUSB_BULK_RUNNING, &data->flags); 1179 goto failed; 1180 } 1181 1182 btusb_submit_bulk_urb(hdev, GFP_NOIO); 1183 } 1184 1185 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) { 1186 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0) 1187 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1188 else 1189 btusb_submit_isoc_urb(hdev, GFP_NOIO); 1190 } 1191 1192 spin_lock_irq(&data->txlock); 1193 play_deferred(data); 1194 clear_bit(BTUSB_SUSPENDING, &data->flags); 1195 spin_unlock_irq(&data->txlock); 1196 schedule_work(&data->work); 1197 1198 return 0; 1199 1200 failed: 1201 usb_scuttle_anchored_urbs(&data->deferred); 1202 done: 1203 spin_lock_irq(&data->txlock); 1204 clear_bit(BTUSB_SUSPENDING, &data->flags); 1205 spin_unlock_irq(&data->txlock); 1206 1207 return err; 1208 } 1209 #endif 1210 1211 static struct usb_driver btusb_driver = { 1212 .name = "btusb", 1213 .probe = btusb_probe, 1214 .disconnect = btusb_disconnect, 1215 #ifdef CONFIG_PM 1216 .suspend = btusb_suspend, 1217 .resume = btusb_resume, 1218 #endif 1219 .id_table = btusb_table, 1220 .supports_autosuspend = 1, 1221 }; 1222 1223 module_usb_driver(btusb_driver); 1224 1225 module_param(ignore_dga, bool, 0644); 1226 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001"); 1227 1228 module_param(ignore_csr, bool, 0644); 1229 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001"); 1230 1231 module_param(ignore_sniffer, bool, 0644); 1232 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002"); 1233 1234 module_param(disable_scofix, bool, 0644); 1235 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size"); 1236 1237 module_param(force_scofix, bool, 0644); 1238 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size"); 1239 1240 module_param(reset, bool, 0644); 1241 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization"); 1242 1243 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); 1244 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION); 1245 MODULE_VERSION(VERSION); 1246 MODULE_LICENSE("GPL"); 1247