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(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE }, 129 { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE }, 130 { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE }, 131 { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE }, 132 133 /* Atheros AR9285 Malbec with sflash firmware */ 134 { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE }, 135 136 /* Atheros 3012 with sflash firmware */ 137 { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 }, 138 { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 }, 139 { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 }, 140 { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 }, 141 { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 }, 142 { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 }, 143 { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 }, 144 145 /* Atheros AR5BBU12 with sflash firmware */ 146 { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE }, 147 148 /* Atheros AR5BBU12 with sflash firmware */ 149 { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 }, 150 151 /* Broadcom BCM2035 */ 152 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU }, 153 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU }, 154 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 }, 155 156 /* Broadcom BCM2045 */ 157 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU }, 158 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU }, 159 160 /* IBM/Lenovo ThinkPad with Broadcom chip */ 161 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU }, 162 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU }, 163 164 /* HP laptop with Broadcom chip */ 165 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU }, 166 167 /* Dell laptop with Broadcom chip */ 168 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU }, 169 170 /* Dell Wireless 370 and 410 devices */ 171 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU }, 172 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU }, 173 174 /* Belkin F8T012 and F8T013 devices */ 175 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU }, 176 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU }, 177 178 /* Asus WL-BTD202 device */ 179 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU }, 180 181 /* Kensington Bluetooth USB adapter */ 182 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU }, 183 184 /* RTX Telecom based adapters with buggy SCO support */ 185 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC }, 186 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC }, 187 188 /* CONWISE Technology based adapters with buggy SCO support */ 189 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC }, 190 191 /* Digianswer devices */ 192 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER }, 193 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE }, 194 195 /* CSR BlueCore Bluetooth Sniffer */ 196 { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER }, 197 198 /* Frontline ComProbe Bluetooth Sniffer */ 199 { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER }, 200 201 { } /* Terminating entry */ 202 }; 203 204 #define BTUSB_MAX_ISOC_FRAMES 10 205 206 #define BTUSB_INTR_RUNNING 0 207 #define BTUSB_BULK_RUNNING 1 208 #define BTUSB_ISOC_RUNNING 2 209 #define BTUSB_SUSPENDING 3 210 #define BTUSB_DID_ISO_RESUME 4 211 212 struct btusb_data { 213 struct hci_dev *hdev; 214 struct usb_device *udev; 215 struct usb_interface *intf; 216 struct usb_interface *isoc; 217 218 spinlock_t lock; 219 220 unsigned long flags; 221 222 struct work_struct work; 223 struct work_struct waker; 224 225 struct usb_anchor tx_anchor; 226 struct usb_anchor intr_anchor; 227 struct usb_anchor bulk_anchor; 228 struct usb_anchor isoc_anchor; 229 struct usb_anchor deferred; 230 int tx_in_flight; 231 spinlock_t txlock; 232 233 struct usb_endpoint_descriptor *intr_ep; 234 struct usb_endpoint_descriptor *bulk_tx_ep; 235 struct usb_endpoint_descriptor *bulk_rx_ep; 236 struct usb_endpoint_descriptor *isoc_tx_ep; 237 struct usb_endpoint_descriptor *isoc_rx_ep; 238 239 __u8 cmdreq_type; 240 241 unsigned int sco_num; 242 int isoc_altsetting; 243 int suspend_count; 244 }; 245 246 static int inc_tx(struct btusb_data *data) 247 { 248 unsigned long flags; 249 int rv; 250 251 spin_lock_irqsave(&data->txlock, flags); 252 rv = test_bit(BTUSB_SUSPENDING, &data->flags); 253 if (!rv) 254 data->tx_in_flight++; 255 spin_unlock_irqrestore(&data->txlock, flags); 256 257 return rv; 258 } 259 260 static void btusb_intr_complete(struct urb *urb) 261 { 262 struct hci_dev *hdev = urb->context; 263 struct btusb_data *data = hci_get_drvdata(hdev); 264 int err; 265 266 BT_DBG("%s urb %p status %d count %d", hdev->name, 267 urb, urb->status, urb->actual_length); 268 269 if (!test_bit(HCI_RUNNING, &hdev->flags)) 270 return; 271 272 if (urb->status == 0) { 273 hdev->stat.byte_rx += urb->actual_length; 274 275 if (hci_recv_fragment(hdev, HCI_EVENT_PKT, 276 urb->transfer_buffer, 277 urb->actual_length) < 0) { 278 BT_ERR("%s corrupted event packet", hdev->name); 279 hdev->stat.err_rx++; 280 } 281 } 282 283 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags)) 284 return; 285 286 usb_mark_last_busy(data->udev); 287 usb_anchor_urb(urb, &data->intr_anchor); 288 289 err = usb_submit_urb(urb, GFP_ATOMIC); 290 if (err < 0) { 291 /* -EPERM: urb is being killed; 292 * -ENODEV: device got disconnected */ 293 if (err != -EPERM && err != -ENODEV) 294 BT_ERR("%s urb %p failed to resubmit (%d)", 295 hdev->name, urb, -err); 296 usb_unanchor_urb(urb); 297 } 298 } 299 300 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags) 301 { 302 struct btusb_data *data = hci_get_drvdata(hdev); 303 struct urb *urb; 304 unsigned char *buf; 305 unsigned int pipe; 306 int err, size; 307 308 BT_DBG("%s", hdev->name); 309 310 if (!data->intr_ep) 311 return -ENODEV; 312 313 urb = usb_alloc_urb(0, mem_flags); 314 if (!urb) 315 return -ENOMEM; 316 317 size = le16_to_cpu(data->intr_ep->wMaxPacketSize); 318 319 buf = kmalloc(size, mem_flags); 320 if (!buf) { 321 usb_free_urb(urb); 322 return -ENOMEM; 323 } 324 325 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress); 326 327 usb_fill_int_urb(urb, data->udev, pipe, buf, size, 328 btusb_intr_complete, hdev, 329 data->intr_ep->bInterval); 330 331 urb->transfer_flags |= URB_FREE_BUFFER; 332 333 usb_anchor_urb(urb, &data->intr_anchor); 334 335 err = usb_submit_urb(urb, mem_flags); 336 if (err < 0) { 337 if (err != -EPERM && err != -ENODEV) 338 BT_ERR("%s urb %p submission failed (%d)", 339 hdev->name, urb, -err); 340 usb_unanchor_urb(urb); 341 } 342 343 usb_free_urb(urb); 344 345 return err; 346 } 347 348 static void btusb_bulk_complete(struct urb *urb) 349 { 350 struct hci_dev *hdev = urb->context; 351 struct btusb_data *data = hci_get_drvdata(hdev); 352 int err; 353 354 BT_DBG("%s urb %p status %d count %d", hdev->name, 355 urb, urb->status, urb->actual_length); 356 357 if (!test_bit(HCI_RUNNING, &hdev->flags)) 358 return; 359 360 if (urb->status == 0) { 361 hdev->stat.byte_rx += urb->actual_length; 362 363 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT, 364 urb->transfer_buffer, 365 urb->actual_length) < 0) { 366 BT_ERR("%s corrupted ACL packet", hdev->name); 367 hdev->stat.err_rx++; 368 } 369 } 370 371 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags)) 372 return; 373 374 usb_anchor_urb(urb, &data->bulk_anchor); 375 usb_mark_last_busy(data->udev); 376 377 err = usb_submit_urb(urb, GFP_ATOMIC); 378 if (err < 0) { 379 /* -EPERM: urb is being killed; 380 * -ENODEV: device got disconnected */ 381 if (err != -EPERM && err != -ENODEV) 382 BT_ERR("%s urb %p failed to resubmit (%d)", 383 hdev->name, urb, -err); 384 usb_unanchor_urb(urb); 385 } 386 } 387 388 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags) 389 { 390 struct btusb_data *data = hci_get_drvdata(hdev); 391 struct urb *urb; 392 unsigned char *buf; 393 unsigned int pipe; 394 int err, size = HCI_MAX_FRAME_SIZE; 395 396 BT_DBG("%s", hdev->name); 397 398 if (!data->bulk_rx_ep) 399 return -ENODEV; 400 401 urb = usb_alloc_urb(0, mem_flags); 402 if (!urb) 403 return -ENOMEM; 404 405 buf = kmalloc(size, mem_flags); 406 if (!buf) { 407 usb_free_urb(urb); 408 return -ENOMEM; 409 } 410 411 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress); 412 413 usb_fill_bulk_urb(urb, data->udev, pipe, 414 buf, size, btusb_bulk_complete, hdev); 415 416 urb->transfer_flags |= URB_FREE_BUFFER; 417 418 usb_mark_last_busy(data->udev); 419 usb_anchor_urb(urb, &data->bulk_anchor); 420 421 err = usb_submit_urb(urb, mem_flags); 422 if (err < 0) { 423 if (err != -EPERM && err != -ENODEV) 424 BT_ERR("%s urb %p submission failed (%d)", 425 hdev->name, urb, -err); 426 usb_unanchor_urb(urb); 427 } 428 429 usb_free_urb(urb); 430 431 return err; 432 } 433 434 static void btusb_isoc_complete(struct urb *urb) 435 { 436 struct hci_dev *hdev = urb->context; 437 struct btusb_data *data = hci_get_drvdata(hdev); 438 int i, err; 439 440 BT_DBG("%s urb %p status %d count %d", hdev->name, 441 urb, urb->status, urb->actual_length); 442 443 if (!test_bit(HCI_RUNNING, &hdev->flags)) 444 return; 445 446 if (urb->status == 0) { 447 for (i = 0; i < urb->number_of_packets; i++) { 448 unsigned int offset = urb->iso_frame_desc[i].offset; 449 unsigned int length = urb->iso_frame_desc[i].actual_length; 450 451 if (urb->iso_frame_desc[i].status) 452 continue; 453 454 hdev->stat.byte_rx += length; 455 456 if (hci_recv_fragment(hdev, HCI_SCODATA_PKT, 457 urb->transfer_buffer + offset, 458 length) < 0) { 459 BT_ERR("%s corrupted SCO packet", hdev->name); 460 hdev->stat.err_rx++; 461 } 462 } 463 } 464 465 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags)) 466 return; 467 468 usb_anchor_urb(urb, &data->isoc_anchor); 469 470 err = usb_submit_urb(urb, GFP_ATOMIC); 471 if (err < 0) { 472 /* -EPERM: urb is being killed; 473 * -ENODEV: device got disconnected */ 474 if (err != -EPERM && err != -ENODEV) 475 BT_ERR("%s urb %p failed to resubmit (%d)", 476 hdev->name, urb, -err); 477 usb_unanchor_urb(urb); 478 } 479 } 480 481 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu) 482 { 483 int i, offset = 0; 484 485 BT_DBG("len %d mtu %d", len, mtu); 486 487 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu; 488 i++, offset += mtu, len -= mtu) { 489 urb->iso_frame_desc[i].offset = offset; 490 urb->iso_frame_desc[i].length = mtu; 491 } 492 493 if (len && i < BTUSB_MAX_ISOC_FRAMES) { 494 urb->iso_frame_desc[i].offset = offset; 495 urb->iso_frame_desc[i].length = len; 496 i++; 497 } 498 499 urb->number_of_packets = i; 500 } 501 502 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags) 503 { 504 struct btusb_data *data = hci_get_drvdata(hdev); 505 struct urb *urb; 506 unsigned char *buf; 507 unsigned int pipe; 508 int err, size; 509 510 BT_DBG("%s", hdev->name); 511 512 if (!data->isoc_rx_ep) 513 return -ENODEV; 514 515 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags); 516 if (!urb) 517 return -ENOMEM; 518 519 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) * 520 BTUSB_MAX_ISOC_FRAMES; 521 522 buf = kmalloc(size, mem_flags); 523 if (!buf) { 524 usb_free_urb(urb); 525 return -ENOMEM; 526 } 527 528 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress); 529 530 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete, 531 hdev, data->isoc_rx_ep->bInterval); 532 533 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP; 534 535 __fill_isoc_descriptor(urb, size, 536 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize)); 537 538 usb_anchor_urb(urb, &data->isoc_anchor); 539 540 err = usb_submit_urb(urb, mem_flags); 541 if (err < 0) { 542 if (err != -EPERM && err != -ENODEV) 543 BT_ERR("%s urb %p submission failed (%d)", 544 hdev->name, urb, -err); 545 usb_unanchor_urb(urb); 546 } 547 548 usb_free_urb(urb); 549 550 return err; 551 } 552 553 static void btusb_tx_complete(struct urb *urb) 554 { 555 struct sk_buff *skb = urb->context; 556 struct hci_dev *hdev = (struct hci_dev *) skb->dev; 557 struct btusb_data *data = hci_get_drvdata(hdev); 558 559 BT_DBG("%s urb %p status %d count %d", hdev->name, 560 urb, urb->status, urb->actual_length); 561 562 if (!test_bit(HCI_RUNNING, &hdev->flags)) 563 goto done; 564 565 if (!urb->status) 566 hdev->stat.byte_tx += urb->transfer_buffer_length; 567 else 568 hdev->stat.err_tx++; 569 570 done: 571 spin_lock(&data->txlock); 572 data->tx_in_flight--; 573 spin_unlock(&data->txlock); 574 575 kfree(urb->setup_packet); 576 577 kfree_skb(skb); 578 } 579 580 static void btusb_isoc_tx_complete(struct urb *urb) 581 { 582 struct sk_buff *skb = urb->context; 583 struct hci_dev *hdev = (struct hci_dev *) skb->dev; 584 585 BT_DBG("%s urb %p status %d count %d", hdev->name, 586 urb, urb->status, urb->actual_length); 587 588 if (!test_bit(HCI_RUNNING, &hdev->flags)) 589 goto done; 590 591 if (!urb->status) 592 hdev->stat.byte_tx += urb->transfer_buffer_length; 593 else 594 hdev->stat.err_tx++; 595 596 done: 597 kfree(urb->setup_packet); 598 599 kfree_skb(skb); 600 } 601 602 static int btusb_open(struct hci_dev *hdev) 603 { 604 struct btusb_data *data = hci_get_drvdata(hdev); 605 int err; 606 607 BT_DBG("%s", hdev->name); 608 609 err = usb_autopm_get_interface(data->intf); 610 if (err < 0) 611 return err; 612 613 data->intf->needs_remote_wakeup = 1; 614 615 if (test_and_set_bit(HCI_RUNNING, &hdev->flags)) 616 goto done; 617 618 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags)) 619 goto done; 620 621 err = btusb_submit_intr_urb(hdev, GFP_KERNEL); 622 if (err < 0) 623 goto failed; 624 625 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL); 626 if (err < 0) { 627 usb_kill_anchored_urbs(&data->intr_anchor); 628 goto failed; 629 } 630 631 set_bit(BTUSB_BULK_RUNNING, &data->flags); 632 btusb_submit_bulk_urb(hdev, GFP_KERNEL); 633 634 done: 635 usb_autopm_put_interface(data->intf); 636 return 0; 637 638 failed: 639 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 640 clear_bit(HCI_RUNNING, &hdev->flags); 641 usb_autopm_put_interface(data->intf); 642 return err; 643 } 644 645 static void btusb_stop_traffic(struct btusb_data *data) 646 { 647 usb_kill_anchored_urbs(&data->intr_anchor); 648 usb_kill_anchored_urbs(&data->bulk_anchor); 649 usb_kill_anchored_urbs(&data->isoc_anchor); 650 } 651 652 static int btusb_close(struct hci_dev *hdev) 653 { 654 struct btusb_data *data = hci_get_drvdata(hdev); 655 int err; 656 657 BT_DBG("%s", hdev->name); 658 659 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags)) 660 return 0; 661 662 cancel_work_sync(&data->work); 663 cancel_work_sync(&data->waker); 664 665 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 666 clear_bit(BTUSB_BULK_RUNNING, &data->flags); 667 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 668 669 btusb_stop_traffic(data); 670 err = usb_autopm_get_interface(data->intf); 671 if (err < 0) 672 goto failed; 673 674 data->intf->needs_remote_wakeup = 0; 675 usb_autopm_put_interface(data->intf); 676 677 failed: 678 usb_scuttle_anchored_urbs(&data->deferred); 679 return 0; 680 } 681 682 static int btusb_flush(struct hci_dev *hdev) 683 { 684 struct btusb_data *data = hci_get_drvdata(hdev); 685 686 BT_DBG("%s", hdev->name); 687 688 usb_kill_anchored_urbs(&data->tx_anchor); 689 690 return 0; 691 } 692 693 static int btusb_send_frame(struct sk_buff *skb) 694 { 695 struct hci_dev *hdev = (struct hci_dev *) skb->dev; 696 struct btusb_data *data = hci_get_drvdata(hdev); 697 struct usb_ctrlrequest *dr; 698 struct urb *urb; 699 unsigned int pipe; 700 int err; 701 702 BT_DBG("%s", hdev->name); 703 704 if (!test_bit(HCI_RUNNING, &hdev->flags)) 705 return -EBUSY; 706 707 switch (bt_cb(skb)->pkt_type) { 708 case HCI_COMMAND_PKT: 709 urb = usb_alloc_urb(0, GFP_ATOMIC); 710 if (!urb) 711 return -ENOMEM; 712 713 dr = kmalloc(sizeof(*dr), GFP_ATOMIC); 714 if (!dr) { 715 usb_free_urb(urb); 716 return -ENOMEM; 717 } 718 719 dr->bRequestType = data->cmdreq_type; 720 dr->bRequest = 0; 721 dr->wIndex = 0; 722 dr->wValue = 0; 723 dr->wLength = __cpu_to_le16(skb->len); 724 725 pipe = usb_sndctrlpipe(data->udev, 0x00); 726 727 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr, 728 skb->data, skb->len, btusb_tx_complete, skb); 729 730 hdev->stat.cmd_tx++; 731 break; 732 733 case HCI_ACLDATA_PKT: 734 if (!data->bulk_tx_ep) 735 return -ENODEV; 736 737 urb = usb_alloc_urb(0, GFP_ATOMIC); 738 if (!urb) 739 return -ENOMEM; 740 741 pipe = usb_sndbulkpipe(data->udev, 742 data->bulk_tx_ep->bEndpointAddress); 743 744 usb_fill_bulk_urb(urb, data->udev, pipe, 745 skb->data, skb->len, btusb_tx_complete, skb); 746 747 hdev->stat.acl_tx++; 748 break; 749 750 case HCI_SCODATA_PKT: 751 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1) 752 return -ENODEV; 753 754 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC); 755 if (!urb) 756 return -ENOMEM; 757 758 pipe = usb_sndisocpipe(data->udev, 759 data->isoc_tx_ep->bEndpointAddress); 760 761 usb_fill_int_urb(urb, data->udev, pipe, 762 skb->data, skb->len, btusb_isoc_tx_complete, 763 skb, data->isoc_tx_ep->bInterval); 764 765 urb->transfer_flags = URB_ISO_ASAP; 766 767 __fill_isoc_descriptor(urb, skb->len, 768 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize)); 769 770 hdev->stat.sco_tx++; 771 goto skip_waking; 772 773 default: 774 return -EILSEQ; 775 } 776 777 err = inc_tx(data); 778 if (err) { 779 usb_anchor_urb(urb, &data->deferred); 780 schedule_work(&data->waker); 781 err = 0; 782 goto done; 783 } 784 785 skip_waking: 786 usb_anchor_urb(urb, &data->tx_anchor); 787 788 err = usb_submit_urb(urb, GFP_ATOMIC); 789 if (err < 0) { 790 if (err != -EPERM && err != -ENODEV) 791 BT_ERR("%s urb %p submission failed (%d)", 792 hdev->name, urb, -err); 793 kfree(urb->setup_packet); 794 usb_unanchor_urb(urb); 795 } else { 796 usb_mark_last_busy(data->udev); 797 } 798 799 done: 800 usb_free_urb(urb); 801 return err; 802 } 803 804 static void btusb_notify(struct hci_dev *hdev, unsigned int evt) 805 { 806 struct btusb_data *data = hci_get_drvdata(hdev); 807 808 BT_DBG("%s evt %d", hdev->name, evt); 809 810 if (hdev->conn_hash.sco_num != data->sco_num) { 811 data->sco_num = hdev->conn_hash.sco_num; 812 schedule_work(&data->work); 813 } 814 } 815 816 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting) 817 { 818 struct btusb_data *data = hci_get_drvdata(hdev); 819 struct usb_interface *intf = data->isoc; 820 struct usb_endpoint_descriptor *ep_desc; 821 int i, err; 822 823 if (!data->isoc) 824 return -ENODEV; 825 826 err = usb_set_interface(data->udev, 1, altsetting); 827 if (err < 0) { 828 BT_ERR("%s setting interface failed (%d)", hdev->name, -err); 829 return err; 830 } 831 832 data->isoc_altsetting = altsetting; 833 834 data->isoc_tx_ep = NULL; 835 data->isoc_rx_ep = NULL; 836 837 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { 838 ep_desc = &intf->cur_altsetting->endpoint[i].desc; 839 840 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) { 841 data->isoc_tx_ep = ep_desc; 842 continue; 843 } 844 845 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) { 846 data->isoc_rx_ep = ep_desc; 847 continue; 848 } 849 } 850 851 if (!data->isoc_tx_ep || !data->isoc_rx_ep) { 852 BT_ERR("%s invalid SCO descriptors", hdev->name); 853 return -ENODEV; 854 } 855 856 return 0; 857 } 858 859 static void btusb_work(struct work_struct *work) 860 { 861 struct btusb_data *data = container_of(work, struct btusb_data, work); 862 struct hci_dev *hdev = data->hdev; 863 int new_alts; 864 int err; 865 866 if (hdev->conn_hash.sco_num > 0) { 867 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) { 868 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf); 869 if (err < 0) { 870 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 871 usb_kill_anchored_urbs(&data->isoc_anchor); 872 return; 873 } 874 875 set_bit(BTUSB_DID_ISO_RESUME, &data->flags); 876 } 877 878 if (hdev->voice_setting & 0x0020) { 879 static const int alts[3] = { 2, 4, 5 }; 880 new_alts = alts[hdev->conn_hash.sco_num - 1]; 881 } else { 882 new_alts = hdev->conn_hash.sco_num; 883 } 884 885 if (data->isoc_altsetting != new_alts) { 886 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 887 usb_kill_anchored_urbs(&data->isoc_anchor); 888 889 if (__set_isoc_interface(hdev, new_alts) < 0) 890 return; 891 } 892 893 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) { 894 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0) 895 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 896 else 897 btusb_submit_isoc_urb(hdev, GFP_KERNEL); 898 } 899 } else { 900 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 901 usb_kill_anchored_urbs(&data->isoc_anchor); 902 903 __set_isoc_interface(hdev, 0); 904 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags)) 905 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf); 906 } 907 } 908 909 static void btusb_waker(struct work_struct *work) 910 { 911 struct btusb_data *data = container_of(work, struct btusb_data, waker); 912 int err; 913 914 err = usb_autopm_get_interface(data->intf); 915 if (err < 0) 916 return; 917 918 usb_autopm_put_interface(data->intf); 919 } 920 921 static int btusb_probe(struct usb_interface *intf, 922 const struct usb_device_id *id) 923 { 924 struct usb_endpoint_descriptor *ep_desc; 925 struct btusb_data *data; 926 struct hci_dev *hdev; 927 int i, err; 928 929 BT_DBG("intf %p id %p", intf, id); 930 931 /* interface numbers are hardcoded in the spec */ 932 if (intf->cur_altsetting->desc.bInterfaceNumber != 0) 933 return -ENODEV; 934 935 if (!id->driver_info) { 936 const struct usb_device_id *match; 937 match = usb_match_id(intf, blacklist_table); 938 if (match) 939 id = match; 940 } 941 942 if (id->driver_info == BTUSB_IGNORE) 943 return -ENODEV; 944 945 if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER) 946 return -ENODEV; 947 948 if (ignore_csr && id->driver_info & BTUSB_CSR) 949 return -ENODEV; 950 951 if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER) 952 return -ENODEV; 953 954 if (id->driver_info & BTUSB_ATH3012) { 955 struct usb_device *udev = interface_to_usbdev(intf); 956 957 /* Old firmware would otherwise let ath3k driver load 958 * patch and sysconfig files */ 959 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001) 960 return -ENODEV; 961 } 962 963 data = kzalloc(sizeof(*data), GFP_KERNEL); 964 if (!data) 965 return -ENOMEM; 966 967 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { 968 ep_desc = &intf->cur_altsetting->endpoint[i].desc; 969 970 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) { 971 data->intr_ep = ep_desc; 972 continue; 973 } 974 975 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) { 976 data->bulk_tx_ep = ep_desc; 977 continue; 978 } 979 980 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) { 981 data->bulk_rx_ep = ep_desc; 982 continue; 983 } 984 } 985 986 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) { 987 kfree(data); 988 return -ENODEV; 989 } 990 991 data->cmdreq_type = USB_TYPE_CLASS; 992 993 data->udev = interface_to_usbdev(intf); 994 data->intf = intf; 995 996 spin_lock_init(&data->lock); 997 998 INIT_WORK(&data->work, btusb_work); 999 INIT_WORK(&data->waker, btusb_waker); 1000 spin_lock_init(&data->txlock); 1001 1002 init_usb_anchor(&data->tx_anchor); 1003 init_usb_anchor(&data->intr_anchor); 1004 init_usb_anchor(&data->bulk_anchor); 1005 init_usb_anchor(&data->isoc_anchor); 1006 init_usb_anchor(&data->deferred); 1007 1008 hdev = hci_alloc_dev(); 1009 if (!hdev) { 1010 kfree(data); 1011 return -ENOMEM; 1012 } 1013 1014 hdev->bus = HCI_USB; 1015 hci_set_drvdata(hdev, data); 1016 1017 data->hdev = hdev; 1018 1019 SET_HCIDEV_DEV(hdev, &intf->dev); 1020 1021 hdev->open = btusb_open; 1022 hdev->close = btusb_close; 1023 hdev->flush = btusb_flush; 1024 hdev->send = btusb_send_frame; 1025 hdev->notify = btusb_notify; 1026 1027 /* Interface numbers are hardcoded in the specification */ 1028 data->isoc = usb_ifnum_to_if(data->udev, 1); 1029 1030 if (!reset) 1031 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks); 1032 1033 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) { 1034 if (!disable_scofix) 1035 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks); 1036 } 1037 1038 if (id->driver_info & BTUSB_BROKEN_ISOC) 1039 data->isoc = NULL; 1040 1041 if (id->driver_info & BTUSB_DIGIANSWER) { 1042 data->cmdreq_type = USB_TYPE_VENDOR; 1043 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks); 1044 } 1045 1046 if (id->driver_info & BTUSB_CSR) { 1047 struct usb_device *udev = data->udev; 1048 1049 /* Old firmware would otherwise execute USB reset */ 1050 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117) 1051 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks); 1052 } 1053 1054 if (id->driver_info & BTUSB_SNIFFER) { 1055 struct usb_device *udev = data->udev; 1056 1057 /* New sniffer firmware has crippled HCI interface */ 1058 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997) 1059 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks); 1060 1061 data->isoc = NULL; 1062 } 1063 1064 if (id->driver_info & BTUSB_BCM92035) { 1065 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 }; 1066 struct sk_buff *skb; 1067 1068 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL); 1069 if (skb) { 1070 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd)); 1071 skb_queue_tail(&hdev->driver_init, skb); 1072 } 1073 } 1074 1075 if (data->isoc) { 1076 err = usb_driver_claim_interface(&btusb_driver, 1077 data->isoc, data); 1078 if (err < 0) { 1079 hci_free_dev(hdev); 1080 kfree(data); 1081 return err; 1082 } 1083 } 1084 1085 err = hci_register_dev(hdev); 1086 if (err < 0) { 1087 hci_free_dev(hdev); 1088 kfree(data); 1089 return err; 1090 } 1091 1092 usb_set_intfdata(intf, data); 1093 1094 return 0; 1095 } 1096 1097 static void btusb_disconnect(struct usb_interface *intf) 1098 { 1099 struct btusb_data *data = usb_get_intfdata(intf); 1100 struct hci_dev *hdev; 1101 1102 BT_DBG("intf %p", intf); 1103 1104 if (!data) 1105 return; 1106 1107 hdev = data->hdev; 1108 usb_set_intfdata(data->intf, NULL); 1109 1110 if (data->isoc) 1111 usb_set_intfdata(data->isoc, NULL); 1112 1113 hci_unregister_dev(hdev); 1114 1115 if (intf == data->isoc) 1116 usb_driver_release_interface(&btusb_driver, data->intf); 1117 else if (data->isoc) 1118 usb_driver_release_interface(&btusb_driver, data->isoc); 1119 1120 hci_free_dev(hdev); 1121 kfree(data); 1122 } 1123 1124 #ifdef CONFIG_PM 1125 static int btusb_suspend(struct usb_interface *intf, pm_message_t message) 1126 { 1127 struct btusb_data *data = usb_get_intfdata(intf); 1128 1129 BT_DBG("intf %p", intf); 1130 1131 if (data->suspend_count++) 1132 return 0; 1133 1134 spin_lock_irq(&data->txlock); 1135 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) { 1136 set_bit(BTUSB_SUSPENDING, &data->flags); 1137 spin_unlock_irq(&data->txlock); 1138 } else { 1139 spin_unlock_irq(&data->txlock); 1140 data->suspend_count--; 1141 return -EBUSY; 1142 } 1143 1144 cancel_work_sync(&data->work); 1145 1146 btusb_stop_traffic(data); 1147 usb_kill_anchored_urbs(&data->tx_anchor); 1148 1149 return 0; 1150 } 1151 1152 static void play_deferred(struct btusb_data *data) 1153 { 1154 struct urb *urb; 1155 int err; 1156 1157 while ((urb = usb_get_from_anchor(&data->deferred))) { 1158 err = usb_submit_urb(urb, GFP_ATOMIC); 1159 if (err < 0) 1160 break; 1161 1162 data->tx_in_flight++; 1163 } 1164 usb_scuttle_anchored_urbs(&data->deferred); 1165 } 1166 1167 static int btusb_resume(struct usb_interface *intf) 1168 { 1169 struct btusb_data *data = usb_get_intfdata(intf); 1170 struct hci_dev *hdev = data->hdev; 1171 int err = 0; 1172 1173 BT_DBG("intf %p", intf); 1174 1175 if (--data->suspend_count) 1176 return 0; 1177 1178 if (!test_bit(HCI_RUNNING, &hdev->flags)) 1179 goto done; 1180 1181 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) { 1182 err = btusb_submit_intr_urb(hdev, GFP_NOIO); 1183 if (err < 0) { 1184 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 1185 goto failed; 1186 } 1187 } 1188 1189 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) { 1190 err = btusb_submit_bulk_urb(hdev, GFP_NOIO); 1191 if (err < 0) { 1192 clear_bit(BTUSB_BULK_RUNNING, &data->flags); 1193 goto failed; 1194 } 1195 1196 btusb_submit_bulk_urb(hdev, GFP_NOIO); 1197 } 1198 1199 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) { 1200 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0) 1201 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1202 else 1203 btusb_submit_isoc_urb(hdev, GFP_NOIO); 1204 } 1205 1206 spin_lock_irq(&data->txlock); 1207 play_deferred(data); 1208 clear_bit(BTUSB_SUSPENDING, &data->flags); 1209 spin_unlock_irq(&data->txlock); 1210 schedule_work(&data->work); 1211 1212 return 0; 1213 1214 failed: 1215 usb_scuttle_anchored_urbs(&data->deferred); 1216 done: 1217 spin_lock_irq(&data->txlock); 1218 clear_bit(BTUSB_SUSPENDING, &data->flags); 1219 spin_unlock_irq(&data->txlock); 1220 1221 return err; 1222 } 1223 #endif 1224 1225 static struct usb_driver btusb_driver = { 1226 .name = "btusb", 1227 .probe = btusb_probe, 1228 .disconnect = btusb_disconnect, 1229 #ifdef CONFIG_PM 1230 .suspend = btusb_suspend, 1231 .resume = btusb_resume, 1232 #endif 1233 .id_table = btusb_table, 1234 .supports_autosuspend = 1, 1235 .disable_hub_initiated_lpm = 1, 1236 }; 1237 1238 module_usb_driver(btusb_driver); 1239 1240 module_param(ignore_dga, bool, 0644); 1241 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001"); 1242 1243 module_param(ignore_csr, bool, 0644); 1244 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001"); 1245 1246 module_param(ignore_sniffer, bool, 0644); 1247 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002"); 1248 1249 module_param(disable_scofix, bool, 0644); 1250 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size"); 1251 1252 module_param(force_scofix, bool, 0644); 1253 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size"); 1254 1255 module_param(reset, bool, 0644); 1256 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization"); 1257 1258 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); 1259 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION); 1260 MODULE_VERSION(VERSION); 1261 MODULE_LICENSE("GPL"); 1262