1 /* 2 * 3 * Generic Bluetooth USB driver 4 * 5 * Copyright (C) 2005-2008 Marcel Holtmann <marcel@holtmann.org> 6 * 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; either version 2 of the License, or 11 * (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 21 * 22 */ 23 24 #include <linux/module.h> 25 #include <linux/usb.h> 26 27 #include <net/bluetooth/bluetooth.h> 28 #include <net/bluetooth/hci_core.h> 29 30 #define VERSION "0.6" 31 32 static bool ignore_dga; 33 static bool ignore_csr; 34 static bool ignore_sniffer; 35 static bool disable_scofix; 36 static bool force_scofix; 37 38 static bool reset = 1; 39 40 static struct usb_driver btusb_driver; 41 42 #define BTUSB_IGNORE 0x01 43 #define BTUSB_DIGIANSWER 0x02 44 #define BTUSB_CSR 0x04 45 #define BTUSB_SNIFFER 0x08 46 #define BTUSB_BCM92035 0x10 47 #define BTUSB_BROKEN_ISOC 0x20 48 #define BTUSB_WRONG_SCO_MTU 0x40 49 #define BTUSB_ATH3012 0x80 50 51 static struct usb_device_id btusb_table[] = { 52 /* Generic Bluetooth USB device */ 53 { USB_DEVICE_INFO(0xe0, 0x01, 0x01) }, 54 55 /* Apple-specific (Broadcom) devices */ 56 { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01) }, 57 58 /* Broadcom SoftSailing reporting vendor specific */ 59 { USB_DEVICE(0x0a5c, 0x21e1) }, 60 61 /* Apple MacBookPro 7,1 */ 62 { USB_DEVICE(0x05ac, 0x8213) }, 63 64 /* Apple iMac11,1 */ 65 { USB_DEVICE(0x05ac, 0x8215) }, 66 67 /* Apple MacBookPro6,2 */ 68 { USB_DEVICE(0x05ac, 0x8218) }, 69 70 /* Apple MacBookAir3,1, MacBookAir3,2 */ 71 { USB_DEVICE(0x05ac, 0x821b) }, 72 73 /* Apple MacBookAir4,1 */ 74 { USB_DEVICE(0x05ac, 0x821f) }, 75 76 /* Apple MacBookPro8,2 */ 77 { USB_DEVICE(0x05ac, 0x821a) }, 78 79 /* Apple MacMini5,1 */ 80 { USB_DEVICE(0x05ac, 0x8281) }, 81 82 /* AVM BlueFRITZ! USB v2.0 */ 83 { USB_DEVICE(0x057c, 0x3800) }, 84 85 /* Bluetooth Ultraport Module from IBM */ 86 { USB_DEVICE(0x04bf, 0x030a) }, 87 88 /* ALPS Modules with non-standard id */ 89 { USB_DEVICE(0x044e, 0x3001) }, 90 { USB_DEVICE(0x044e, 0x3002) }, 91 92 /* Ericsson with non-standard id */ 93 { USB_DEVICE(0x0bdb, 0x1002) }, 94 95 /* Canyon CN-BTU1 with HID interfaces */ 96 { USB_DEVICE(0x0c10, 0x0000) }, 97 98 /* Broadcom BCM20702A0 */ 99 { USB_DEVICE(0x0b05, 0x17b5) }, 100 { USB_DEVICE(0x04ca, 0x2003) }, 101 { USB_DEVICE(0x0489, 0xe042) }, 102 { USB_DEVICE(0x413c, 0x8197) }, 103 104 /* Foxconn - Hon Hai */ 105 { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01) }, 106 107 /*Broadcom devices with vendor specific id */ 108 { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01) }, 109 110 { } /* Terminating entry */ 111 }; 112 113 MODULE_DEVICE_TABLE(usb, btusb_table); 114 115 static struct usb_device_id blacklist_table[] = { 116 /* CSR BlueCore devices */ 117 { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR }, 118 119 /* Broadcom BCM2033 without firmware */ 120 { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE }, 121 122 /* Atheros 3011 with sflash firmware */ 123 { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE }, 124 { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE }, 125 { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE }, 126 { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE }, 127 { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE }, 128 { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE }, 129 130 /* Atheros AR9285 Malbec with sflash firmware */ 131 { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE }, 132 133 /* Atheros 3012 with sflash firmware */ 134 { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 }, 135 { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 }, 136 { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 }, 137 { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 }, 138 { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 }, 139 { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 }, 140 { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 }, 141 { USB_DEVICE(0x0489, 0xe057), .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 { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 }, 149 150 /* Broadcom BCM2035 */ 151 { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU }, 152 { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU }, 153 { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 }, 154 155 /* Broadcom BCM2045 */ 156 { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU }, 157 { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU }, 158 159 /* IBM/Lenovo ThinkPad with Broadcom chip */ 160 { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU }, 161 { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU }, 162 163 /* HP laptop with Broadcom chip */ 164 { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU }, 165 166 /* Dell laptop with Broadcom chip */ 167 { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU }, 168 169 /* Dell Wireless 370 and 410 devices */ 170 { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU }, 171 { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU }, 172 173 /* Belkin F8T012 and F8T013 devices */ 174 { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU }, 175 { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU }, 176 177 /* Asus WL-BTD202 device */ 178 { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU }, 179 180 /* Kensington Bluetooth USB adapter */ 181 { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU }, 182 183 /* RTX Telecom based adapters with buggy SCO support */ 184 { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC }, 185 { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC }, 186 187 /* CONWISE Technology based adapters with buggy SCO support */ 188 { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC }, 189 190 /* Digianswer devices */ 191 { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER }, 192 { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE }, 193 194 /* CSR BlueCore Bluetooth Sniffer */ 195 { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER }, 196 197 /* Frontline ComProbe Bluetooth Sniffer */ 198 { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER }, 199 200 { } /* Terminating entry */ 201 }; 202 203 #define BTUSB_MAX_ISOC_FRAMES 10 204 205 #define BTUSB_INTR_RUNNING 0 206 #define BTUSB_BULK_RUNNING 1 207 #define BTUSB_ISOC_RUNNING 2 208 #define BTUSB_SUSPENDING 3 209 #define BTUSB_DID_ISO_RESUME 4 210 211 struct btusb_data { 212 struct hci_dev *hdev; 213 struct usb_device *udev; 214 struct usb_interface *intf; 215 struct usb_interface *isoc; 216 217 spinlock_t lock; 218 219 unsigned long flags; 220 221 struct work_struct work; 222 struct work_struct waker; 223 224 struct usb_anchor tx_anchor; 225 struct usb_anchor intr_anchor; 226 struct usb_anchor bulk_anchor; 227 struct usb_anchor isoc_anchor; 228 struct usb_anchor deferred; 229 int tx_in_flight; 230 spinlock_t txlock; 231 232 struct usb_endpoint_descriptor *intr_ep; 233 struct usb_endpoint_descriptor *bulk_tx_ep; 234 struct usb_endpoint_descriptor *bulk_rx_ep; 235 struct usb_endpoint_descriptor *isoc_tx_ep; 236 struct usb_endpoint_descriptor *isoc_rx_ep; 237 238 __u8 cmdreq_type; 239 240 unsigned int sco_num; 241 int isoc_altsetting; 242 int suspend_count; 243 }; 244 245 static int inc_tx(struct btusb_data *data) 246 { 247 unsigned long flags; 248 int rv; 249 250 spin_lock_irqsave(&data->txlock, flags); 251 rv = test_bit(BTUSB_SUSPENDING, &data->flags); 252 if (!rv) 253 data->tx_in_flight++; 254 spin_unlock_irqrestore(&data->txlock, flags); 255 256 return rv; 257 } 258 259 static void btusb_intr_complete(struct urb *urb) 260 { 261 struct hci_dev *hdev = urb->context; 262 struct btusb_data *data = hci_get_drvdata(hdev); 263 int err; 264 265 BT_DBG("%s urb %p status %d count %d", hdev->name, 266 urb, urb->status, urb->actual_length); 267 268 if (!test_bit(HCI_RUNNING, &hdev->flags)) 269 return; 270 271 if (urb->status == 0) { 272 hdev->stat.byte_rx += urb->actual_length; 273 274 if (hci_recv_fragment(hdev, HCI_EVENT_PKT, 275 urb->transfer_buffer, 276 urb->actual_length) < 0) { 277 BT_ERR("%s corrupted event packet", hdev->name); 278 hdev->stat.err_rx++; 279 } 280 } 281 282 if (!test_bit(BTUSB_INTR_RUNNING, &data->flags)) 283 return; 284 285 usb_mark_last_busy(data->udev); 286 usb_anchor_urb(urb, &data->intr_anchor); 287 288 err = usb_submit_urb(urb, GFP_ATOMIC); 289 if (err < 0) { 290 /* -EPERM: urb is being killed; 291 * -ENODEV: device got disconnected */ 292 if (err != -EPERM && err != -ENODEV) 293 BT_ERR("%s urb %p failed to resubmit (%d)", 294 hdev->name, urb, -err); 295 usb_unanchor_urb(urb); 296 } 297 } 298 299 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags) 300 { 301 struct btusb_data *data = hci_get_drvdata(hdev); 302 struct urb *urb; 303 unsigned char *buf; 304 unsigned int pipe; 305 int err, size; 306 307 BT_DBG("%s", hdev->name); 308 309 if (!data->intr_ep) 310 return -ENODEV; 311 312 urb = usb_alloc_urb(0, mem_flags); 313 if (!urb) 314 return -ENOMEM; 315 316 size = le16_to_cpu(data->intr_ep->wMaxPacketSize); 317 318 buf = kmalloc(size, mem_flags); 319 if (!buf) { 320 usb_free_urb(urb); 321 return -ENOMEM; 322 } 323 324 pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress); 325 326 usb_fill_int_urb(urb, data->udev, pipe, buf, size, 327 btusb_intr_complete, hdev, 328 data->intr_ep->bInterval); 329 330 urb->transfer_flags |= URB_FREE_BUFFER; 331 332 usb_anchor_urb(urb, &data->intr_anchor); 333 334 err = usb_submit_urb(urb, mem_flags); 335 if (err < 0) { 336 if (err != -EPERM && err != -ENODEV) 337 BT_ERR("%s urb %p submission failed (%d)", 338 hdev->name, urb, -err); 339 usb_unanchor_urb(urb); 340 } 341 342 usb_free_urb(urb); 343 344 return err; 345 } 346 347 static void btusb_bulk_complete(struct urb *urb) 348 { 349 struct hci_dev *hdev = urb->context; 350 struct btusb_data *data = hci_get_drvdata(hdev); 351 int err; 352 353 BT_DBG("%s urb %p status %d count %d", hdev->name, 354 urb, urb->status, urb->actual_length); 355 356 if (!test_bit(HCI_RUNNING, &hdev->flags)) 357 return; 358 359 if (urb->status == 0) { 360 hdev->stat.byte_rx += urb->actual_length; 361 362 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT, 363 urb->transfer_buffer, 364 urb->actual_length) < 0) { 365 BT_ERR("%s corrupted ACL packet", hdev->name); 366 hdev->stat.err_rx++; 367 } 368 } 369 370 if (!test_bit(BTUSB_BULK_RUNNING, &data->flags)) 371 return; 372 373 usb_anchor_urb(urb, &data->bulk_anchor); 374 usb_mark_last_busy(data->udev); 375 376 err = usb_submit_urb(urb, GFP_ATOMIC); 377 if (err < 0) { 378 /* -EPERM: urb is being killed; 379 * -ENODEV: device got disconnected */ 380 if (err != -EPERM && err != -ENODEV) 381 BT_ERR("%s urb %p failed to resubmit (%d)", 382 hdev->name, urb, -err); 383 usb_unanchor_urb(urb); 384 } 385 } 386 387 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags) 388 { 389 struct btusb_data *data = hci_get_drvdata(hdev); 390 struct urb *urb; 391 unsigned char *buf; 392 unsigned int pipe; 393 int err, size = HCI_MAX_FRAME_SIZE; 394 395 BT_DBG("%s", hdev->name); 396 397 if (!data->bulk_rx_ep) 398 return -ENODEV; 399 400 urb = usb_alloc_urb(0, mem_flags); 401 if (!urb) 402 return -ENOMEM; 403 404 buf = kmalloc(size, mem_flags); 405 if (!buf) { 406 usb_free_urb(urb); 407 return -ENOMEM; 408 } 409 410 pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress); 411 412 usb_fill_bulk_urb(urb, data->udev, pipe, 413 buf, size, btusb_bulk_complete, hdev); 414 415 urb->transfer_flags |= URB_FREE_BUFFER; 416 417 usb_mark_last_busy(data->udev); 418 usb_anchor_urb(urb, &data->bulk_anchor); 419 420 err = usb_submit_urb(urb, mem_flags); 421 if (err < 0) { 422 if (err != -EPERM && err != -ENODEV) 423 BT_ERR("%s urb %p submission failed (%d)", 424 hdev->name, urb, -err); 425 usb_unanchor_urb(urb); 426 } 427 428 usb_free_urb(urb); 429 430 return err; 431 } 432 433 static void btusb_isoc_complete(struct urb *urb) 434 { 435 struct hci_dev *hdev = urb->context; 436 struct btusb_data *data = hci_get_drvdata(hdev); 437 int i, err; 438 439 BT_DBG("%s urb %p status %d count %d", hdev->name, 440 urb, urb->status, urb->actual_length); 441 442 if (!test_bit(HCI_RUNNING, &hdev->flags)) 443 return; 444 445 if (urb->status == 0) { 446 for (i = 0; i < urb->number_of_packets; i++) { 447 unsigned int offset = urb->iso_frame_desc[i].offset; 448 unsigned int length = urb->iso_frame_desc[i].actual_length; 449 450 if (urb->iso_frame_desc[i].status) 451 continue; 452 453 hdev->stat.byte_rx += length; 454 455 if (hci_recv_fragment(hdev, HCI_SCODATA_PKT, 456 urb->transfer_buffer + offset, 457 length) < 0) { 458 BT_ERR("%s corrupted SCO packet", hdev->name); 459 hdev->stat.err_rx++; 460 } 461 } 462 } 463 464 if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags)) 465 return; 466 467 usb_anchor_urb(urb, &data->isoc_anchor); 468 469 err = usb_submit_urb(urb, GFP_ATOMIC); 470 if (err < 0) { 471 /* -EPERM: urb is being killed; 472 * -ENODEV: device got disconnected */ 473 if (err != -EPERM && err != -ENODEV) 474 BT_ERR("%s urb %p failed to resubmit (%d)", 475 hdev->name, urb, -err); 476 usb_unanchor_urb(urb); 477 } 478 } 479 480 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu) 481 { 482 int i, offset = 0; 483 484 BT_DBG("len %d mtu %d", len, mtu); 485 486 for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu; 487 i++, offset += mtu, len -= mtu) { 488 urb->iso_frame_desc[i].offset = offset; 489 urb->iso_frame_desc[i].length = mtu; 490 } 491 492 if (len && i < BTUSB_MAX_ISOC_FRAMES) { 493 urb->iso_frame_desc[i].offset = offset; 494 urb->iso_frame_desc[i].length = len; 495 i++; 496 } 497 498 urb->number_of_packets = i; 499 } 500 501 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags) 502 { 503 struct btusb_data *data = hci_get_drvdata(hdev); 504 struct urb *urb; 505 unsigned char *buf; 506 unsigned int pipe; 507 int err, size; 508 509 BT_DBG("%s", hdev->name); 510 511 if (!data->isoc_rx_ep) 512 return -ENODEV; 513 514 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags); 515 if (!urb) 516 return -ENOMEM; 517 518 size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) * 519 BTUSB_MAX_ISOC_FRAMES; 520 521 buf = kmalloc(size, mem_flags); 522 if (!buf) { 523 usb_free_urb(urb); 524 return -ENOMEM; 525 } 526 527 pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress); 528 529 usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete, 530 hdev, data->isoc_rx_ep->bInterval); 531 532 urb->transfer_flags = URB_FREE_BUFFER | URB_ISO_ASAP; 533 534 __fill_isoc_descriptor(urb, size, 535 le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize)); 536 537 usb_anchor_urb(urb, &data->isoc_anchor); 538 539 err = usb_submit_urb(urb, mem_flags); 540 if (err < 0) { 541 if (err != -EPERM && err != -ENODEV) 542 BT_ERR("%s urb %p submission failed (%d)", 543 hdev->name, urb, -err); 544 usb_unanchor_urb(urb); 545 } 546 547 usb_free_urb(urb); 548 549 return err; 550 } 551 552 static void btusb_tx_complete(struct urb *urb) 553 { 554 struct sk_buff *skb = urb->context; 555 struct hci_dev *hdev = (struct hci_dev *) skb->dev; 556 struct btusb_data *data = hci_get_drvdata(hdev); 557 558 BT_DBG("%s urb %p status %d count %d", hdev->name, 559 urb, urb->status, urb->actual_length); 560 561 if (!test_bit(HCI_RUNNING, &hdev->flags)) 562 goto done; 563 564 if (!urb->status) 565 hdev->stat.byte_tx += urb->transfer_buffer_length; 566 else 567 hdev->stat.err_tx++; 568 569 done: 570 spin_lock(&data->txlock); 571 data->tx_in_flight--; 572 spin_unlock(&data->txlock); 573 574 kfree(urb->setup_packet); 575 576 kfree_skb(skb); 577 } 578 579 static void btusb_isoc_tx_complete(struct urb *urb) 580 { 581 struct sk_buff *skb = urb->context; 582 struct hci_dev *hdev = (struct hci_dev *) skb->dev; 583 584 BT_DBG("%s urb %p status %d count %d", hdev->name, 585 urb, urb->status, urb->actual_length); 586 587 if (!test_bit(HCI_RUNNING, &hdev->flags)) 588 goto done; 589 590 if (!urb->status) 591 hdev->stat.byte_tx += urb->transfer_buffer_length; 592 else 593 hdev->stat.err_tx++; 594 595 done: 596 kfree(urb->setup_packet); 597 598 kfree_skb(skb); 599 } 600 601 static int btusb_open(struct hci_dev *hdev) 602 { 603 struct btusb_data *data = hci_get_drvdata(hdev); 604 int err; 605 606 BT_DBG("%s", hdev->name); 607 608 err = usb_autopm_get_interface(data->intf); 609 if (err < 0) 610 return err; 611 612 data->intf->needs_remote_wakeup = 1; 613 614 if (test_and_set_bit(HCI_RUNNING, &hdev->flags)) 615 goto done; 616 617 if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags)) 618 goto done; 619 620 err = btusb_submit_intr_urb(hdev, GFP_KERNEL); 621 if (err < 0) 622 goto failed; 623 624 err = btusb_submit_bulk_urb(hdev, GFP_KERNEL); 625 if (err < 0) { 626 usb_kill_anchored_urbs(&data->intr_anchor); 627 goto failed; 628 } 629 630 set_bit(BTUSB_BULK_RUNNING, &data->flags); 631 btusb_submit_bulk_urb(hdev, GFP_KERNEL); 632 633 done: 634 usb_autopm_put_interface(data->intf); 635 return 0; 636 637 failed: 638 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 639 clear_bit(HCI_RUNNING, &hdev->flags); 640 usb_autopm_put_interface(data->intf); 641 return err; 642 } 643 644 static void btusb_stop_traffic(struct btusb_data *data) 645 { 646 usb_kill_anchored_urbs(&data->intr_anchor); 647 usb_kill_anchored_urbs(&data->bulk_anchor); 648 usb_kill_anchored_urbs(&data->isoc_anchor); 649 } 650 651 static int btusb_close(struct hci_dev *hdev) 652 { 653 struct btusb_data *data = hci_get_drvdata(hdev); 654 int err; 655 656 BT_DBG("%s", hdev->name); 657 658 if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags)) 659 return 0; 660 661 cancel_work_sync(&data->work); 662 cancel_work_sync(&data->waker); 663 664 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 665 clear_bit(BTUSB_BULK_RUNNING, &data->flags); 666 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 667 668 btusb_stop_traffic(data); 669 err = usb_autopm_get_interface(data->intf); 670 if (err < 0) 671 goto failed; 672 673 data->intf->needs_remote_wakeup = 0; 674 usb_autopm_put_interface(data->intf); 675 676 failed: 677 usb_scuttle_anchored_urbs(&data->deferred); 678 return 0; 679 } 680 681 static int btusb_flush(struct hci_dev *hdev) 682 { 683 struct btusb_data *data = hci_get_drvdata(hdev); 684 685 BT_DBG("%s", hdev->name); 686 687 usb_kill_anchored_urbs(&data->tx_anchor); 688 689 return 0; 690 } 691 692 static int btusb_send_frame(struct sk_buff *skb) 693 { 694 struct hci_dev *hdev = (struct hci_dev *) skb->dev; 695 struct btusb_data *data = hci_get_drvdata(hdev); 696 struct usb_ctrlrequest *dr; 697 struct urb *urb; 698 unsigned int pipe; 699 int err; 700 701 BT_DBG("%s", hdev->name); 702 703 if (!test_bit(HCI_RUNNING, &hdev->flags)) 704 return -EBUSY; 705 706 switch (bt_cb(skb)->pkt_type) { 707 case HCI_COMMAND_PKT: 708 urb = usb_alloc_urb(0, GFP_ATOMIC); 709 if (!urb) 710 return -ENOMEM; 711 712 dr = kmalloc(sizeof(*dr), GFP_ATOMIC); 713 if (!dr) { 714 usb_free_urb(urb); 715 return -ENOMEM; 716 } 717 718 dr->bRequestType = data->cmdreq_type; 719 dr->bRequest = 0; 720 dr->wIndex = 0; 721 dr->wValue = 0; 722 dr->wLength = __cpu_to_le16(skb->len); 723 724 pipe = usb_sndctrlpipe(data->udev, 0x00); 725 726 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr, 727 skb->data, skb->len, btusb_tx_complete, skb); 728 729 hdev->stat.cmd_tx++; 730 break; 731 732 case HCI_ACLDATA_PKT: 733 if (!data->bulk_tx_ep) 734 return -ENODEV; 735 736 urb = usb_alloc_urb(0, GFP_ATOMIC); 737 if (!urb) 738 return -ENOMEM; 739 740 pipe = usb_sndbulkpipe(data->udev, 741 data->bulk_tx_ep->bEndpointAddress); 742 743 usb_fill_bulk_urb(urb, data->udev, pipe, 744 skb->data, skb->len, btusb_tx_complete, skb); 745 746 hdev->stat.acl_tx++; 747 break; 748 749 case HCI_SCODATA_PKT: 750 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1) 751 return -ENODEV; 752 753 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC); 754 if (!urb) 755 return -ENOMEM; 756 757 pipe = usb_sndisocpipe(data->udev, 758 data->isoc_tx_ep->bEndpointAddress); 759 760 usb_fill_int_urb(urb, data->udev, pipe, 761 skb->data, skb->len, btusb_isoc_tx_complete, 762 skb, data->isoc_tx_ep->bInterval); 763 764 urb->transfer_flags = URB_ISO_ASAP; 765 766 __fill_isoc_descriptor(urb, skb->len, 767 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize)); 768 769 hdev->stat.sco_tx++; 770 goto skip_waking; 771 772 default: 773 return -EILSEQ; 774 } 775 776 err = inc_tx(data); 777 if (err) { 778 usb_anchor_urb(urb, &data->deferred); 779 schedule_work(&data->waker); 780 err = 0; 781 goto done; 782 } 783 784 skip_waking: 785 usb_anchor_urb(urb, &data->tx_anchor); 786 787 err = usb_submit_urb(urb, GFP_ATOMIC); 788 if (err < 0) { 789 if (err != -EPERM && err != -ENODEV) 790 BT_ERR("%s urb %p submission failed (%d)", 791 hdev->name, urb, -err); 792 kfree(urb->setup_packet); 793 usb_unanchor_urb(urb); 794 } else { 795 usb_mark_last_busy(data->udev); 796 } 797 798 done: 799 usb_free_urb(urb); 800 return err; 801 } 802 803 static void btusb_notify(struct hci_dev *hdev, unsigned int evt) 804 { 805 struct btusb_data *data = hci_get_drvdata(hdev); 806 807 BT_DBG("%s evt %d", hdev->name, evt); 808 809 if (hdev->conn_hash.sco_num != data->sco_num) { 810 data->sco_num = hdev->conn_hash.sco_num; 811 schedule_work(&data->work); 812 } 813 } 814 815 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting) 816 { 817 struct btusb_data *data = hci_get_drvdata(hdev); 818 struct usb_interface *intf = data->isoc; 819 struct usb_endpoint_descriptor *ep_desc; 820 int i, err; 821 822 if (!data->isoc) 823 return -ENODEV; 824 825 err = usb_set_interface(data->udev, 1, altsetting); 826 if (err < 0) { 827 BT_ERR("%s setting interface failed (%d)", hdev->name, -err); 828 return err; 829 } 830 831 data->isoc_altsetting = altsetting; 832 833 data->isoc_tx_ep = NULL; 834 data->isoc_rx_ep = NULL; 835 836 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { 837 ep_desc = &intf->cur_altsetting->endpoint[i].desc; 838 839 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) { 840 data->isoc_tx_ep = ep_desc; 841 continue; 842 } 843 844 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) { 845 data->isoc_rx_ep = ep_desc; 846 continue; 847 } 848 } 849 850 if (!data->isoc_tx_ep || !data->isoc_rx_ep) { 851 BT_ERR("%s invalid SCO descriptors", hdev->name); 852 return -ENODEV; 853 } 854 855 return 0; 856 } 857 858 static void btusb_work(struct work_struct *work) 859 { 860 struct btusb_data *data = container_of(work, struct btusb_data, work); 861 struct hci_dev *hdev = data->hdev; 862 int new_alts; 863 int err; 864 865 if (hdev->conn_hash.sco_num > 0) { 866 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) { 867 err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf); 868 if (err < 0) { 869 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 870 usb_kill_anchored_urbs(&data->isoc_anchor); 871 return; 872 } 873 874 set_bit(BTUSB_DID_ISO_RESUME, &data->flags); 875 } 876 877 if (hdev->voice_setting & 0x0020) { 878 static const int alts[3] = { 2, 4, 5 }; 879 new_alts = alts[hdev->conn_hash.sco_num - 1]; 880 } else { 881 new_alts = hdev->conn_hash.sco_num; 882 } 883 884 if (data->isoc_altsetting != new_alts) { 885 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 886 usb_kill_anchored_urbs(&data->isoc_anchor); 887 888 if (__set_isoc_interface(hdev, new_alts) < 0) 889 return; 890 } 891 892 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) { 893 if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0) 894 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 895 else 896 btusb_submit_isoc_urb(hdev, GFP_KERNEL); 897 } 898 } else { 899 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 900 usb_kill_anchored_urbs(&data->isoc_anchor); 901 902 __set_isoc_interface(hdev, 0); 903 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags)) 904 usb_autopm_put_interface(data->isoc ? data->isoc : data->intf); 905 } 906 } 907 908 static void btusb_waker(struct work_struct *work) 909 { 910 struct btusb_data *data = container_of(work, struct btusb_data, waker); 911 int err; 912 913 err = usb_autopm_get_interface(data->intf); 914 if (err < 0) 915 return; 916 917 usb_autopm_put_interface(data->intf); 918 } 919 920 static int btusb_probe(struct usb_interface *intf, 921 const struct usb_device_id *id) 922 { 923 struct usb_endpoint_descriptor *ep_desc; 924 struct btusb_data *data; 925 struct hci_dev *hdev; 926 int i, err; 927 928 BT_DBG("intf %p id %p", intf, id); 929 930 /* interface numbers are hardcoded in the spec */ 931 if (intf->cur_altsetting->desc.bInterfaceNumber != 0) 932 return -ENODEV; 933 934 if (!id->driver_info) { 935 const struct usb_device_id *match; 936 match = usb_match_id(intf, blacklist_table); 937 if (match) 938 id = match; 939 } 940 941 if (id->driver_info == BTUSB_IGNORE) 942 return -ENODEV; 943 944 if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER) 945 return -ENODEV; 946 947 if (ignore_csr && id->driver_info & BTUSB_CSR) 948 return -ENODEV; 949 950 if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER) 951 return -ENODEV; 952 953 if (id->driver_info & BTUSB_ATH3012) { 954 struct usb_device *udev = interface_to_usbdev(intf); 955 956 /* Old firmware would otherwise let ath3k driver load 957 * patch and sysconfig files */ 958 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001) 959 return -ENODEV; 960 } 961 962 data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL); 963 if (!data) 964 return -ENOMEM; 965 966 for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) { 967 ep_desc = &intf->cur_altsetting->endpoint[i].desc; 968 969 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) { 970 data->intr_ep = ep_desc; 971 continue; 972 } 973 974 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) { 975 data->bulk_tx_ep = ep_desc; 976 continue; 977 } 978 979 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) { 980 data->bulk_rx_ep = ep_desc; 981 continue; 982 } 983 } 984 985 if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) 986 return -ENODEV; 987 988 data->cmdreq_type = USB_TYPE_CLASS; 989 990 data->udev = interface_to_usbdev(intf); 991 data->intf = intf; 992 993 spin_lock_init(&data->lock); 994 995 INIT_WORK(&data->work, btusb_work); 996 INIT_WORK(&data->waker, btusb_waker); 997 spin_lock_init(&data->txlock); 998 999 init_usb_anchor(&data->tx_anchor); 1000 init_usb_anchor(&data->intr_anchor); 1001 init_usb_anchor(&data->bulk_anchor); 1002 init_usb_anchor(&data->isoc_anchor); 1003 init_usb_anchor(&data->deferred); 1004 1005 hdev = hci_alloc_dev(); 1006 if (!hdev) 1007 return -ENOMEM; 1008 1009 hdev->bus = HCI_USB; 1010 hci_set_drvdata(hdev, data); 1011 1012 data->hdev = hdev; 1013 1014 SET_HCIDEV_DEV(hdev, &intf->dev); 1015 1016 hdev->open = btusb_open; 1017 hdev->close = btusb_close; 1018 hdev->flush = btusb_flush; 1019 hdev->send = btusb_send_frame; 1020 hdev->notify = btusb_notify; 1021 1022 /* Interface numbers are hardcoded in the specification */ 1023 data->isoc = usb_ifnum_to_if(data->udev, 1); 1024 1025 if (!reset) 1026 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); 1027 1028 if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) { 1029 if (!disable_scofix) 1030 set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks); 1031 } 1032 1033 if (id->driver_info & BTUSB_BROKEN_ISOC) 1034 data->isoc = NULL; 1035 1036 if (id->driver_info & BTUSB_DIGIANSWER) { 1037 data->cmdreq_type = USB_TYPE_VENDOR; 1038 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); 1039 } 1040 1041 if (id->driver_info & BTUSB_CSR) { 1042 struct usb_device *udev = data->udev; 1043 1044 /* Old firmware would otherwise execute USB reset */ 1045 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117) 1046 set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); 1047 } 1048 1049 if (id->driver_info & BTUSB_SNIFFER) { 1050 struct usb_device *udev = data->udev; 1051 1052 /* New sniffer firmware has crippled HCI interface */ 1053 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997) 1054 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks); 1055 1056 data->isoc = NULL; 1057 } 1058 1059 if (id->driver_info & BTUSB_BCM92035) { 1060 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 }; 1061 struct sk_buff *skb; 1062 1063 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL); 1064 if (skb) { 1065 memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd)); 1066 skb_queue_tail(&hdev->driver_init, skb); 1067 } 1068 } 1069 1070 if (data->isoc) { 1071 err = usb_driver_claim_interface(&btusb_driver, 1072 data->isoc, data); 1073 if (err < 0) { 1074 hci_free_dev(hdev); 1075 return err; 1076 } 1077 } 1078 1079 err = hci_register_dev(hdev); 1080 if (err < 0) { 1081 hci_free_dev(hdev); 1082 return err; 1083 } 1084 1085 usb_set_intfdata(intf, data); 1086 1087 return 0; 1088 } 1089 1090 static void btusb_disconnect(struct usb_interface *intf) 1091 { 1092 struct btusb_data *data = usb_get_intfdata(intf); 1093 struct hci_dev *hdev; 1094 1095 BT_DBG("intf %p", intf); 1096 1097 if (!data) 1098 return; 1099 1100 hdev = data->hdev; 1101 usb_set_intfdata(data->intf, NULL); 1102 1103 if (data->isoc) 1104 usb_set_intfdata(data->isoc, NULL); 1105 1106 hci_unregister_dev(hdev); 1107 1108 if (intf == data->isoc) 1109 usb_driver_release_interface(&btusb_driver, data->intf); 1110 else if (data->isoc) 1111 usb_driver_release_interface(&btusb_driver, data->isoc); 1112 1113 hci_free_dev(hdev); 1114 } 1115 1116 #ifdef CONFIG_PM 1117 static int btusb_suspend(struct usb_interface *intf, pm_message_t message) 1118 { 1119 struct btusb_data *data = usb_get_intfdata(intf); 1120 1121 BT_DBG("intf %p", intf); 1122 1123 if (data->suspend_count++) 1124 return 0; 1125 1126 spin_lock_irq(&data->txlock); 1127 if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) { 1128 set_bit(BTUSB_SUSPENDING, &data->flags); 1129 spin_unlock_irq(&data->txlock); 1130 } else { 1131 spin_unlock_irq(&data->txlock); 1132 data->suspend_count--; 1133 return -EBUSY; 1134 } 1135 1136 cancel_work_sync(&data->work); 1137 1138 btusb_stop_traffic(data); 1139 usb_kill_anchored_urbs(&data->tx_anchor); 1140 1141 return 0; 1142 } 1143 1144 static void play_deferred(struct btusb_data *data) 1145 { 1146 struct urb *urb; 1147 int err; 1148 1149 while ((urb = usb_get_from_anchor(&data->deferred))) { 1150 err = usb_submit_urb(urb, GFP_ATOMIC); 1151 if (err < 0) 1152 break; 1153 1154 data->tx_in_flight++; 1155 } 1156 usb_scuttle_anchored_urbs(&data->deferred); 1157 } 1158 1159 static int btusb_resume(struct usb_interface *intf) 1160 { 1161 struct btusb_data *data = usb_get_intfdata(intf); 1162 struct hci_dev *hdev = data->hdev; 1163 int err = 0; 1164 1165 BT_DBG("intf %p", intf); 1166 1167 if (--data->suspend_count) 1168 return 0; 1169 1170 if (!test_bit(HCI_RUNNING, &hdev->flags)) 1171 goto done; 1172 1173 if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) { 1174 err = btusb_submit_intr_urb(hdev, GFP_NOIO); 1175 if (err < 0) { 1176 clear_bit(BTUSB_INTR_RUNNING, &data->flags); 1177 goto failed; 1178 } 1179 } 1180 1181 if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) { 1182 err = btusb_submit_bulk_urb(hdev, GFP_NOIO); 1183 if (err < 0) { 1184 clear_bit(BTUSB_BULK_RUNNING, &data->flags); 1185 goto failed; 1186 } 1187 1188 btusb_submit_bulk_urb(hdev, GFP_NOIO); 1189 } 1190 1191 if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) { 1192 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0) 1193 clear_bit(BTUSB_ISOC_RUNNING, &data->flags); 1194 else 1195 btusb_submit_isoc_urb(hdev, GFP_NOIO); 1196 } 1197 1198 spin_lock_irq(&data->txlock); 1199 play_deferred(data); 1200 clear_bit(BTUSB_SUSPENDING, &data->flags); 1201 spin_unlock_irq(&data->txlock); 1202 schedule_work(&data->work); 1203 1204 return 0; 1205 1206 failed: 1207 usb_scuttle_anchored_urbs(&data->deferred); 1208 done: 1209 spin_lock_irq(&data->txlock); 1210 clear_bit(BTUSB_SUSPENDING, &data->flags); 1211 spin_unlock_irq(&data->txlock); 1212 1213 return err; 1214 } 1215 #endif 1216 1217 static struct usb_driver btusb_driver = { 1218 .name = "btusb", 1219 .probe = btusb_probe, 1220 .disconnect = btusb_disconnect, 1221 #ifdef CONFIG_PM 1222 .suspend = btusb_suspend, 1223 .resume = btusb_resume, 1224 #endif 1225 .id_table = btusb_table, 1226 .supports_autosuspend = 1, 1227 .disable_hub_initiated_lpm = 1, 1228 }; 1229 1230 module_usb_driver(btusb_driver); 1231 1232 module_param(ignore_dga, bool, 0644); 1233 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001"); 1234 1235 module_param(ignore_csr, bool, 0644); 1236 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001"); 1237 1238 module_param(ignore_sniffer, bool, 0644); 1239 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002"); 1240 1241 module_param(disable_scofix, bool, 0644); 1242 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size"); 1243 1244 module_param(force_scofix, bool, 0644); 1245 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size"); 1246 1247 module_param(reset, bool, 0644); 1248 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization"); 1249 1250 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); 1251 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION); 1252 MODULE_VERSION(VERSION); 1253 MODULE_LICENSE("GPL"); 1254