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 /* Atheros AR5BBU12 with sflash firmware */ 147 { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 }, 148 149 /* Broadcom BCM2035 */ 150 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU }, 151 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU }, 152 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 }, 153 154 /* Broadcom BCM2045 */ 155 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU }, 156 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU }, 157 158 /* IBM/Lenovo ThinkPad with Broadcom chip */ 159 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU }, 160 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU }, 161 162 /* HP laptop with Broadcom chip */ 163 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU }, 164 165 /* Dell laptop with Broadcom chip */ 166 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU }, 167 168 /* Dell Wireless 370 and 410 devices */ 169 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU }, 170 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU }, 171 172 /* Belkin F8T012 and F8T013 devices */ 173 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU }, 174 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU }, 175 176 /* Asus WL-BTD202 device */ 177 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU }, 178 179 /* Kensington Bluetooth USB adapter */ 180 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU }, 181 182 /* RTX Telecom based adapters with buggy SCO support */ 183 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC }, 184 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC }, 185 186 /* CONWISE Technology based adapters with buggy SCO support */ 187 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC }, 188 189 /* Digianswer devices */ 190 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER }, 191 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE }, 192 193 /* CSR BlueCore Bluetooth Sniffer */ 194 { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER }, 195 196 /* Frontline ComProbe Bluetooth Sniffer */ 197 { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER }, 198 199 { } /* Terminating entry */ 200 }; 201 202 #define BTUSB_MAX_ISOC_FRAMES 10 203 204 #define BTUSB_INTR_RUNNING 0 205 #define BTUSB_BULK_RUNNING 1 206 #define BTUSB_ISOC_RUNNING 2 207 #define BTUSB_SUSPENDING 3 208 #define BTUSB_DID_ISO_RESUME 4 209 210 struct btusb_data { 211 struct hci_dev *hdev; 212 struct usb_device *udev; 213 struct usb_interface *intf; 214 struct usb_interface *isoc; 215 216 spinlock_t lock; 217 218 unsigned long flags; 219 220 struct work_struct work; 221 struct work_struct waker; 222 223 struct usb_anchor tx_anchor; 224 struct usb_anchor intr_anchor; 225 struct usb_anchor bulk_anchor; 226 struct usb_anchor isoc_anchor; 227 struct usb_anchor deferred; 228 int tx_in_flight; 229 spinlock_t txlock; 230 231 struct usb_endpoint_descriptor *intr_ep; 232 struct usb_endpoint_descriptor *bulk_tx_ep; 233 struct usb_endpoint_descriptor *bulk_rx_ep; 234 struct usb_endpoint_descriptor *isoc_tx_ep; 235 struct usb_endpoint_descriptor *isoc_rx_ep; 236 237 __u8 cmdreq_type; 238 239 unsigned int sco_num; 240 int isoc_altsetting; 241 int suspend_count; 242 }; 243 244 static int inc_tx(struct btusb_data *data) 245 { 246 unsigned long flags; 247 int rv; 248 249 spin_lock_irqsave(&data->txlock, flags); 250 rv = test_bit(BTUSB_SUSPENDING, &data->flags); 251 if (!rv) 252 data->tx_in_flight++; 253 spin_unlock_irqrestore(&data->txlock, flags); 254 255 return rv; 256 } 257 258 static void btusb_intr_complete(struct urb *urb) 259 { 260 struct hci_dev *hdev = urb->context; 261 struct btusb_data *data = hci_get_drvdata(hdev); 262 int err; 263 264 BT_DBG("%s urb %p status %d count %d", hdev->name, 265 urb, urb->status, urb->actual_length); 266 267 if (!test_bit(HCI_RUNNING, &hdev->flags)) 268 return; 269 270 if (urb->status == 0) { 271 hdev->stat.byte_rx += urb->actual_length; 272 273 if (hci_recv_fragment(hdev, HCI_EVENT_PKT, 274 urb->transfer_buffer, 275 urb->actual_length) < 0) { 276 BT_ERR("%s corrupted event packet", hdev->name); 277 hdev->stat.err_rx++; 278 } 279 } 280 281 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags)) 282 return; 283 284 usb_mark_last_busy(data->udev); 285 usb_anchor_urb(urb, &data->intr_anchor); 286 287 err = usb_submit_urb(urb, GFP_ATOMIC); 288 if (err < 0) { 289 /* -EPERM: urb is being killed; 290 * -ENODEV: device got disconnected */ 291 if (err != -EPERM && err != -ENODEV) 292 BT_ERR("%s urb %p failed to resubmit (%d)", 293 hdev->name, urb, -err); 294 usb_unanchor_urb(urb); 295 } 296 } 297 298 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags) 299 { 300 struct btusb_data *data = hci_get_drvdata(hdev); 301 struct urb *urb; 302 unsigned char *buf; 303 unsigned int pipe; 304 int err, size; 305 306 BT_DBG("%s", hdev->name); 307 308 if (!data->intr_ep) 309 return -ENODEV; 310 311 urb = usb_alloc_urb(0, mem_flags); 312 if (!urb) 313 return -ENOMEM; 314 315 size = le16_to_cpu(data->intr_ep->wMaxPacketSize); 316 317 buf = kmalloc(size, mem_flags); 318 if (!buf) { 319 usb_free_urb(urb); 320 return -ENOMEM; 321 } 322 323 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress); 324 325 usb_fill_int_urb(urb, data->udev, pipe, buf, size, 326 btusb_intr_complete, hdev, 327 data->intr_ep->bInterval); 328 329 urb->transfer_flags |= URB_FREE_BUFFER; 330 331 usb_anchor_urb(urb, &data->intr_anchor); 332 333 err = usb_submit_urb(urb, mem_flags); 334 if (err < 0) { 335 if (err != -EPERM && err != -ENODEV) 336 BT_ERR("%s urb %p submission failed (%d)", 337 hdev->name, urb, -err); 338 usb_unanchor_urb(urb); 339 } 340 341 usb_free_urb(urb); 342 343 return err; 344 } 345 346 static void btusb_bulk_complete(struct urb *urb) 347 { 348 struct hci_dev *hdev = urb->context; 349 struct btusb_data *data = hci_get_drvdata(hdev); 350 int err; 351 352 BT_DBG("%s urb %p status %d count %d", hdev->name, 353 urb, urb->status, urb->actual_length); 354 355 if (!test_bit(HCI_RUNNING, &hdev->flags)) 356 return; 357 358 if (urb->status == 0) { 359 hdev->stat.byte_rx += urb->actual_length; 360 361 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT, 362 urb->transfer_buffer, 363 urb->actual_length) < 0) { 364 BT_ERR("%s corrupted ACL packet", hdev->name); 365 hdev->stat.err_rx++; 366 } 367 } 368 369 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags)) 370 return; 371 372 usb_anchor_urb(urb, &data->bulk_anchor); 373 usb_mark_last_busy(data->udev); 374 375 err = usb_submit_urb(urb, GFP_ATOMIC); 376 if (err < 0) { 377 /* -EPERM: urb is being killed; 378 * -ENODEV: device got disconnected */ 379 if (err != -EPERM && err != -ENODEV) 380 BT_ERR("%s urb %p failed to resubmit (%d)", 381 hdev->name, urb, -err); 382 usb_unanchor_urb(urb); 383 } 384 } 385 386 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags) 387 { 388 struct btusb_data *data = hci_get_drvdata(hdev); 389 struct urb *urb; 390 unsigned char *buf; 391 unsigned int pipe; 392 int err, size = HCI_MAX_FRAME_SIZE; 393 394 BT_DBG("%s", hdev->name); 395 396 if (!data->bulk_rx_ep) 397 return -ENODEV; 398 399 urb = usb_alloc_urb(0, mem_flags); 400 if (!urb) 401 return -ENOMEM; 402 403 buf = kmalloc(size, mem_flags); 404 if (!buf) { 405 usb_free_urb(urb); 406 return -ENOMEM; 407 } 408 409 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress); 410 411 usb_fill_bulk_urb(urb, data->udev, pipe, 412 buf, size, btusb_bulk_complete, hdev); 413 414 urb->transfer_flags |= URB_FREE_BUFFER; 415 416 usb_mark_last_busy(data->udev); 417 usb_anchor_urb(urb, &data->bulk_anchor); 418 419 err = usb_submit_urb(urb, mem_flags); 420 if (err < 0) { 421 if (err != -EPERM && err != -ENODEV) 422 BT_ERR("%s urb %p submission failed (%d)", 423 hdev->name, urb, -err); 424 usb_unanchor_urb(urb); 425 } 426 427 usb_free_urb(urb); 428 429 return err; 430 } 431 432 static void btusb_isoc_complete(struct urb *urb) 433 { 434 struct hci_dev *hdev = urb->context; 435 struct btusb_data *data = hci_get_drvdata(hdev); 436 int i, err; 437 438 BT_DBG("%s urb %p status %d count %d", hdev->name, 439 urb, urb->status, urb->actual_length); 440 441 if (!test_bit(HCI_RUNNING, &hdev->flags)) 442 return; 443 444 if (urb->status == 0) { 445 for (i = 0; i < urb->number_of_packets; i++) { 446 unsigned int offset = urb->iso_frame_desc[i].offset; 447 unsigned int length = urb->iso_frame_desc[i].actual_length; 448 449 if (urb->iso_frame_desc[i].status) 450 continue; 451 452 hdev->stat.byte_rx += length; 453 454 if (hci_recv_fragment(hdev, HCI_SCODATA_PKT, 455 urb->transfer_buffer + offset, 456 length) < 0) { 457 BT_ERR("%s corrupted SCO packet", hdev->name); 458 hdev->stat.err_rx++; 459 } 460 } 461 } 462 463 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags)) 464 return; 465 466 usb_anchor_urb(urb, &data->isoc_anchor); 467 468 err = usb_submit_urb(urb, GFP_ATOMIC); 469 if (err < 0) { 470 /* -EPERM: urb is being killed; 471 * -ENODEV: device got disconnected */ 472 if (err != -EPERM && err != -ENODEV) 473 BT_ERR("%s urb %p failed to resubmit (%d)", 474 hdev->name, urb, -err); 475 usb_unanchor_urb(urb); 476 } 477 } 478 479 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu) 480 { 481 int i, offset = 0; 482 483 BT_DBG("len %d mtu %d", len, mtu); 484 485 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu; 486 i++, offset += mtu, len -= mtu) { 487 urb->iso_frame_desc[i].offset = offset; 488 urb->iso_frame_desc[i].length = mtu; 489 } 490 491 if (len && i < BTUSB_MAX_ISOC_FRAMES) { 492 urb->iso_frame_desc[i].offset = offset; 493 urb->iso_frame_desc[i].length = len; 494 i++; 495 } 496 497 urb->number_of_packets = i; 498 } 499 500 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags) 501 { 502 struct btusb_data *data = hci_get_drvdata(hdev); 503 struct urb *urb; 504 unsigned char *buf; 505 unsigned int pipe; 506 int err, size; 507 508 BT_DBG("%s", hdev->name); 509 510 if (!data->isoc_rx_ep) 511 return -ENODEV; 512 513 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags); 514 if (!urb) 515 return -ENOMEM; 516 517 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) * 518 BTUSB_MAX_ISOC_FRAMES; 519 520 buf = kmalloc(size, mem_flags); 521 if (!buf) { 522 usb_free_urb(urb); 523 return -ENOMEM; 524 } 525 526 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress); 527 528 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete, 529 hdev, data->isoc_rx_ep->bInterval); 530 531 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP; 532 533 __fill_isoc_descriptor(urb, size, 534 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize)); 535 536 usb_anchor_urb(urb, &data->isoc_anchor); 537 538 err = usb_submit_urb(urb, mem_flags); 539 if (err < 0) { 540 if (err != -EPERM && err != -ENODEV) 541 BT_ERR("%s urb %p submission failed (%d)", 542 hdev->name, urb, -err); 543 usb_unanchor_urb(urb); 544 } 545 546 usb_free_urb(urb); 547 548 return err; 549 } 550 551 static void btusb_tx_complete(struct urb *urb) 552 { 553 struct sk_buff *skb = urb->context; 554 struct hci_dev *hdev = (struct hci_dev *) skb->dev; 555 struct btusb_data *data = hci_get_drvdata(hdev); 556 557 BT_DBG("%s urb %p status %d count %d", hdev->name, 558 urb, urb->status, urb->actual_length); 559 560 if (!test_bit(HCI_RUNNING, &hdev->flags)) 561 goto done; 562 563 if (!urb->status) 564 hdev->stat.byte_tx += urb->transfer_buffer_length; 565 else 566 hdev->stat.err_tx++; 567 568 done: 569 spin_lock(&data->txlock); 570 data->tx_in_flight--; 571 spin_unlock(&data->txlock); 572 573 kfree(urb->setup_packet); 574 575 kfree_skb(skb); 576 } 577 578 static void btusb_isoc_tx_complete(struct urb *urb) 579 { 580 struct sk_buff *skb = urb->context; 581 struct hci_dev *hdev = (struct hci_dev *) skb->dev; 582 583 BT_DBG("%s urb %p status %d count %d", hdev->name, 584 urb, urb->status, urb->actual_length); 585 586 if (!test_bit(HCI_RUNNING, &hdev->flags)) 587 goto done; 588 589 if (!urb->status) 590 hdev->stat.byte_tx += urb->transfer_buffer_length; 591 else 592 hdev->stat.err_tx++; 593 594 done: 595 kfree(urb->setup_packet); 596 597 kfree_skb(skb); 598 } 599 600 static int btusb_open(struct hci_dev *hdev) 601 { 602 struct btusb_data *data = hci_get_drvdata(hdev); 603 int err; 604 605 BT_DBG("%s", hdev->name); 606 607 err = usb_autopm_get_interface(data->intf); 608 if (err < 0) 609 return err; 610 611 data->intf->needs_remote_wakeup = 1; 612 613 if (test_and_set_bit(HCI_RUNNING, &hdev->flags)) 614 goto done; 615 616 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags)) 617 goto done; 618 619 err = btusb_submit_intr_urb(hdev, GFP_KERNEL); 620 if (err < 0) 621 goto failed; 622 623 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL); 624 if (err < 0) { 625 usb_kill_anchored_urbs(&data->intr_anchor); 626 goto failed; 627 } 628 629 set_bit(BTUSB_BULK_RUNNING, &data->flags); 630 btusb_submit_bulk_urb(hdev, GFP_KERNEL); 631 632 done: 633 usb_autopm_put_interface(data->intf); 634 return 0; 635 636 failed: 637 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 638 clear_bit(HCI_RUNNING, &hdev->flags); 639 usb_autopm_put_interface(data->intf); 640 return err; 641 } 642 643 static void btusb_stop_traffic(struct btusb_data *data) 644 { 645 usb_kill_anchored_urbs(&data->intr_anchor); 646 usb_kill_anchored_urbs(&data->bulk_anchor); 647 usb_kill_anchored_urbs(&data->isoc_anchor); 648 } 649 650 static int btusb_close(struct hci_dev *hdev) 651 { 652 struct btusb_data *data = hci_get_drvdata(hdev); 653 int err; 654 655 BT_DBG("%s", hdev->name); 656 657 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags)) 658 return 0; 659 660 cancel_work_sync(&data->work); 661 cancel_work_sync(&data->waker); 662 663 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 664 clear_bit(BTUSB_BULK_RUNNING, &data->flags); 665 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 666 667 btusb_stop_traffic(data); 668 err = usb_autopm_get_interface(data->intf); 669 if (err < 0) 670 goto failed; 671 672 data->intf->needs_remote_wakeup = 0; 673 usb_autopm_put_interface(data->intf); 674 675 failed: 676 usb_scuttle_anchored_urbs(&data->deferred); 677 return 0; 678 } 679 680 static int btusb_flush(struct hci_dev *hdev) 681 { 682 struct btusb_data *data = hci_get_drvdata(hdev); 683 684 BT_DBG("%s", hdev->name); 685 686 usb_kill_anchored_urbs(&data->tx_anchor); 687 688 return 0; 689 } 690 691 static int btusb_send_frame(struct sk_buff *skb) 692 { 693 struct hci_dev *hdev = (struct hci_dev *) skb->dev; 694 struct btusb_data *data = hci_get_drvdata(hdev); 695 struct usb_ctrlrequest *dr; 696 struct urb *urb; 697 unsigned int pipe; 698 int err; 699 700 BT_DBG("%s", hdev->name); 701 702 if (!test_bit(HCI_RUNNING, &hdev->flags)) 703 return -EBUSY; 704 705 switch (bt_cb(skb)->pkt_type) { 706 case HCI_COMMAND_PKT: 707 urb = usb_alloc_urb(0, GFP_ATOMIC); 708 if (!urb) 709 return -ENOMEM; 710 711 dr = kmalloc(sizeof(*dr), GFP_ATOMIC); 712 if (!dr) { 713 usb_free_urb(urb); 714 return -ENOMEM; 715 } 716 717 dr->bRequestType = data->cmdreq_type; 718 dr->bRequest = 0; 719 dr->wIndex = 0; 720 dr->wValue = 0; 721 dr->wLength = __cpu_to_le16(skb->len); 722 723 pipe = usb_sndctrlpipe(data->udev, 0x00); 724 725 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr, 726 skb->data, skb->len, btusb_tx_complete, skb); 727 728 hdev->stat.cmd_tx++; 729 break; 730 731 case HCI_ACLDATA_PKT: 732 if (!data->bulk_tx_ep) 733 return -ENODEV; 734 735 urb = usb_alloc_urb(0, GFP_ATOMIC); 736 if (!urb) 737 return -ENOMEM; 738 739 pipe = usb_sndbulkpipe(data->udev, 740 data->bulk_tx_ep->bEndpointAddress); 741 742 usb_fill_bulk_urb(urb, data->udev, pipe, 743 skb->data, skb->len, btusb_tx_complete, skb); 744 745 hdev->stat.acl_tx++; 746 break; 747 748 case HCI_SCODATA_PKT: 749 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1) 750 return -ENODEV; 751 752 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC); 753 if (!urb) 754 return -ENOMEM; 755 756 pipe = usb_sndisocpipe(data->udev, 757 data->isoc_tx_ep->bEndpointAddress); 758 759 usb_fill_int_urb(urb, data->udev, pipe, 760 skb->data, skb->len, btusb_isoc_tx_complete, 761 skb, data->isoc_tx_ep->bInterval); 762 763 urb->transfer_flags = URB_ISO_ASAP; 764 765 __fill_isoc_descriptor(urb, skb->len, 766 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize)); 767 768 hdev->stat.sco_tx++; 769 goto skip_waking; 770 771 default: 772 return -EILSEQ; 773 } 774 775 err = inc_tx(data); 776 if (err) { 777 usb_anchor_urb(urb, &data->deferred); 778 schedule_work(&data->waker); 779 err = 0; 780 goto done; 781 } 782 783 skip_waking: 784 usb_anchor_urb(urb, &data->tx_anchor); 785 786 err = usb_submit_urb(urb, GFP_ATOMIC); 787 if (err < 0) { 788 if (err != -EPERM && err != -ENODEV) 789 BT_ERR("%s urb %p submission failed (%d)", 790 hdev->name, urb, -err); 791 kfree(urb->setup_packet); 792 usb_unanchor_urb(urb); 793 } else { 794 usb_mark_last_busy(data->udev); 795 } 796 797 done: 798 usb_free_urb(urb); 799 return err; 800 } 801 802 static void btusb_notify(struct hci_dev *hdev, unsigned int evt) 803 { 804 struct btusb_data *data = hci_get_drvdata(hdev); 805 806 BT_DBG("%s evt %d", hdev->name, evt); 807 808 if (hdev->conn_hash.sco_num != data->sco_num) { 809 data->sco_num = hdev->conn_hash.sco_num; 810 schedule_work(&data->work); 811 } 812 } 813 814 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting) 815 { 816 struct btusb_data *data = hci_get_drvdata(hdev); 817 struct usb_interface *intf = data->isoc; 818 struct usb_endpoint_descriptor *ep_desc; 819 int i, err; 820 821 if (!data->isoc) 822 return -ENODEV; 823 824 err = usb_set_interface(data->udev, 1, altsetting); 825 if (err < 0) { 826 BT_ERR("%s setting interface failed (%d)", hdev->name, -err); 827 return err; 828 } 829 830 data->isoc_altsetting = altsetting; 831 832 data->isoc_tx_ep = NULL; 833 data->isoc_rx_ep = NULL; 834 835 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { 836 ep_desc = &intf->cur_altsetting->endpoint[i].desc; 837 838 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) { 839 data->isoc_tx_ep = ep_desc; 840 continue; 841 } 842 843 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) { 844 data->isoc_rx_ep = ep_desc; 845 continue; 846 } 847 } 848 849 if (!data->isoc_tx_ep || !data->isoc_rx_ep) { 850 BT_ERR("%s invalid SCO descriptors", hdev->name); 851 return -ENODEV; 852 } 853 854 return 0; 855 } 856 857 static void btusb_work(struct work_struct *work) 858 { 859 struct btusb_data *data = container_of(work, struct btusb_data, work); 860 struct hci_dev *hdev = data->hdev; 861 int new_alts; 862 int err; 863 864 if (hdev->conn_hash.sco_num > 0) { 865 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) { 866 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf); 867 if (err < 0) { 868 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 869 usb_kill_anchored_urbs(&data->isoc_anchor); 870 return; 871 } 872 873 set_bit(BTUSB_DID_ISO_RESUME, &data->flags); 874 } 875 876 if (hdev->voice_setting & 0x0020) { 877 static const int alts[3] = { 2, 4, 5 }; 878 new_alts = alts[hdev->conn_hash.sco_num - 1]; 879 } else { 880 new_alts = hdev->conn_hash.sco_num; 881 } 882 883 if (data->isoc_altsetting != new_alts) { 884 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 885 usb_kill_anchored_urbs(&data->isoc_anchor); 886 887 if (__set_isoc_interface(hdev, new_alts) < 0) 888 return; 889 } 890 891 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) { 892 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0) 893 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 894 else 895 btusb_submit_isoc_urb(hdev, GFP_KERNEL); 896 } 897 } else { 898 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 899 usb_kill_anchored_urbs(&data->isoc_anchor); 900 901 __set_isoc_interface(hdev, 0); 902 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags)) 903 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf); 904 } 905 } 906 907 static void btusb_waker(struct work_struct *work) 908 { 909 struct btusb_data *data = container_of(work, struct btusb_data, waker); 910 int err; 911 912 err = usb_autopm_get_interface(data->intf); 913 if (err < 0) 914 return; 915 916 usb_autopm_put_interface(data->intf); 917 } 918 919 static int btusb_probe(struct usb_interface *intf, 920 const struct usb_device_id *id) 921 { 922 struct usb_endpoint_descriptor *ep_desc; 923 struct btusb_data *data; 924 struct hci_dev *hdev; 925 int i, err; 926 927 BT_DBG("intf %p id %p", intf, id); 928 929 /* interface numbers are hardcoded in the spec */ 930 if (intf->cur_altsetting->desc.bInterfaceNumber != 0) 931 return -ENODEV; 932 933 if (!id->driver_info) { 934 const struct usb_device_id *match; 935 match = usb_match_id(intf, blacklist_table); 936 if (match) 937 id = match; 938 } 939 940 if (id->driver_info == BTUSB_IGNORE) 941 return -ENODEV; 942 943 if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER) 944 return -ENODEV; 945 946 if (ignore_csr && id->driver_info & BTUSB_CSR) 947 return -ENODEV; 948 949 if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER) 950 return -ENODEV; 951 952 if (id->driver_info & BTUSB_ATH3012) { 953 struct usb_device *udev = interface_to_usbdev(intf); 954 955 /* Old firmware would otherwise let ath3k driver load 956 * patch and sysconfig files */ 957 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001) 958 return -ENODEV; 959 } 960 961 data = kzalloc(sizeof(*data), GFP_KERNEL); 962 if (!data) 963 return -ENOMEM; 964 965 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { 966 ep_desc = &intf->cur_altsetting->endpoint[i].desc; 967 968 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) { 969 data->intr_ep = ep_desc; 970 continue; 971 } 972 973 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) { 974 data->bulk_tx_ep = ep_desc; 975 continue; 976 } 977 978 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) { 979 data->bulk_rx_ep = ep_desc; 980 continue; 981 } 982 } 983 984 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) { 985 kfree(data); 986 return -ENODEV; 987 } 988 989 data->cmdreq_type = USB_TYPE_CLASS; 990 991 data->udev = interface_to_usbdev(intf); 992 data->intf = intf; 993 994 spin_lock_init(&data->lock); 995 996 INIT_WORK(&data->work, btusb_work); 997 INIT_WORK(&data->waker, btusb_waker); 998 spin_lock_init(&data->txlock); 999 1000 init_usb_anchor(&data->tx_anchor); 1001 init_usb_anchor(&data->intr_anchor); 1002 init_usb_anchor(&data->bulk_anchor); 1003 init_usb_anchor(&data->isoc_anchor); 1004 init_usb_anchor(&data->deferred); 1005 1006 hdev = hci_alloc_dev(); 1007 if (!hdev) { 1008 kfree(data); 1009 return -ENOMEM; 1010 } 1011 1012 hdev->bus = HCI_USB; 1013 hci_set_drvdata(hdev, data); 1014 1015 data->hdev = hdev; 1016 1017 SET_HCIDEV_DEV(hdev, &intf->dev); 1018 1019 hdev->open = btusb_open; 1020 hdev->close = btusb_close; 1021 hdev->flush = btusb_flush; 1022 hdev->send = btusb_send_frame; 1023 hdev->notify = btusb_notify; 1024 1025 /* Interface numbers are hardcoded in the specification */ 1026 data->isoc = usb_ifnum_to_if(data->udev, 1); 1027 1028 if (!reset) 1029 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks); 1030 1031 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) { 1032 if (!disable_scofix) 1033 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks); 1034 } 1035 1036 if (id->driver_info & BTUSB_BROKEN_ISOC) 1037 data->isoc = NULL; 1038 1039 if (id->driver_info & BTUSB_DIGIANSWER) { 1040 data->cmdreq_type = USB_TYPE_VENDOR; 1041 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks); 1042 } 1043 1044 if (id->driver_info & BTUSB_CSR) { 1045 struct usb_device *udev = data->udev; 1046 1047 /* Old firmware would otherwise execute USB reset */ 1048 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117) 1049 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks); 1050 } 1051 1052 if (id->driver_info & BTUSB_SNIFFER) { 1053 struct usb_device *udev = data->udev; 1054 1055 /* New sniffer firmware has crippled HCI interface */ 1056 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997) 1057 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks); 1058 1059 data->isoc = NULL; 1060 } 1061 1062 if (id->driver_info & BTUSB_BCM92035) { 1063 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 }; 1064 struct sk_buff *skb; 1065 1066 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL); 1067 if (skb) { 1068 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd)); 1069 skb_queue_tail(&hdev->driver_init, skb); 1070 } 1071 } 1072 1073 if (data->isoc) { 1074 err = usb_driver_claim_interface(&btusb_driver, 1075 data->isoc, data); 1076 if (err < 0) { 1077 hci_free_dev(hdev); 1078 kfree(data); 1079 return err; 1080 } 1081 } 1082 1083 err = hci_register_dev(hdev); 1084 if (err < 0) { 1085 hci_free_dev(hdev); 1086 kfree(data); 1087 return err; 1088 } 1089 1090 usb_set_intfdata(intf, data); 1091 1092 return 0; 1093 } 1094 1095 static void btusb_disconnect(struct usb_interface *intf) 1096 { 1097 struct btusb_data *data = usb_get_intfdata(intf); 1098 struct hci_dev *hdev; 1099 1100 BT_DBG("intf %p", intf); 1101 1102 if (!data) 1103 return; 1104 1105 hdev = data->hdev; 1106 usb_set_intfdata(data->intf, NULL); 1107 1108 if (data->isoc) 1109 usb_set_intfdata(data->isoc, NULL); 1110 1111 hci_unregister_dev(hdev); 1112 1113 if (intf == data->isoc) 1114 usb_driver_release_interface(&btusb_driver, data->intf); 1115 else if (data->isoc) 1116 usb_driver_release_interface(&btusb_driver, data->isoc); 1117 1118 hci_free_dev(hdev); 1119 kfree(data); 1120 } 1121 1122 #ifdef CONFIG_PM 1123 static int btusb_suspend(struct usb_interface *intf, pm_message_t message) 1124 { 1125 struct btusb_data *data = usb_get_intfdata(intf); 1126 1127 BT_DBG("intf %p", intf); 1128 1129 if (data->suspend_count++) 1130 return 0; 1131 1132 spin_lock_irq(&data->txlock); 1133 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) { 1134 set_bit(BTUSB_SUSPENDING, &data->flags); 1135 spin_unlock_irq(&data->txlock); 1136 } else { 1137 spin_unlock_irq(&data->txlock); 1138 data->suspend_count--; 1139 return -EBUSY; 1140 } 1141 1142 cancel_work_sync(&data->work); 1143 1144 btusb_stop_traffic(data); 1145 usb_kill_anchored_urbs(&data->tx_anchor); 1146 1147 return 0; 1148 } 1149 1150 static void play_deferred(struct btusb_data *data) 1151 { 1152 struct urb *urb; 1153 int err; 1154 1155 while ((urb = usb_get_from_anchor(&data->deferred))) { 1156 err = usb_submit_urb(urb, GFP_ATOMIC); 1157 if (err < 0) 1158 break; 1159 1160 data->tx_in_flight++; 1161 } 1162 usb_scuttle_anchored_urbs(&data->deferred); 1163 } 1164 1165 static int btusb_resume(struct usb_interface *intf) 1166 { 1167 struct btusb_data *data = usb_get_intfdata(intf); 1168 struct hci_dev *hdev = data->hdev; 1169 int err = 0; 1170 1171 BT_DBG("intf %p", intf); 1172 1173 if (--data->suspend_count) 1174 return 0; 1175 1176 if (!test_bit(HCI_RUNNING, &hdev->flags)) 1177 goto done; 1178 1179 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) { 1180 err = btusb_submit_intr_urb(hdev, GFP_NOIO); 1181 if (err < 0) { 1182 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 1183 goto failed; 1184 } 1185 } 1186 1187 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) { 1188 err = btusb_submit_bulk_urb(hdev, GFP_NOIO); 1189 if (err < 0) { 1190 clear_bit(BTUSB_BULK_RUNNING, &data->flags); 1191 goto failed; 1192 } 1193 1194 btusb_submit_bulk_urb(hdev, GFP_NOIO); 1195 } 1196 1197 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) { 1198 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0) 1199 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1200 else 1201 btusb_submit_isoc_urb(hdev, GFP_NOIO); 1202 } 1203 1204 spin_lock_irq(&data->txlock); 1205 play_deferred(data); 1206 clear_bit(BTUSB_SUSPENDING, &data->flags); 1207 spin_unlock_irq(&data->txlock); 1208 schedule_work(&data->work); 1209 1210 return 0; 1211 1212 failed: 1213 usb_scuttle_anchored_urbs(&data->deferred); 1214 done: 1215 spin_lock_irq(&data->txlock); 1216 clear_bit(BTUSB_SUSPENDING, &data->flags); 1217 spin_unlock_irq(&data->txlock); 1218 1219 return err; 1220 } 1221 #endif 1222 1223 static struct usb_driver btusb_driver = { 1224 .name = "btusb", 1225 .probe = btusb_probe, 1226 .disconnect = btusb_disconnect, 1227 #ifdef CONFIG_PM 1228 .suspend = btusb_suspend, 1229 .resume = btusb_resume, 1230 #endif 1231 .id_table = btusb_table, 1232 .supports_autosuspend = 1, 1233 .disable_hub_initiated_lpm = 1, 1234 }; 1235 1236 module_usb_driver(btusb_driver); 1237 1238 module_param(ignore_dga, bool, 0644); 1239 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001"); 1240 1241 module_param(ignore_csr, bool, 0644); 1242 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001"); 1243 1244 module_param(ignore_sniffer, bool, 0644); 1245 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002"); 1246 1247 module_param(disable_scofix, bool, 0644); 1248 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size"); 1249 1250 module_param(force_scofix, bool, 0644); 1251 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size"); 1252 1253 module_param(reset, bool, 0644); 1254 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization"); 1255 1256 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); 1257 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION); 1258 MODULE_VERSION(VERSION); 1259 MODULE_LICENSE("GPL"); 1260