usb_device.c revision 225350
1193326Sed/* $FreeBSD: head/sys/dev/usb/usb_device.c 225350 2011-09-02 18:50:44Z hselasky $ */ 2193326Sed/*- 3193326Sed * Copyright (c) 2008 Hans Petter Selasky. All rights reserved. 4193326Sed * 5193326Sed * Redistribution and use in source and binary forms, with or without 6193326Sed * modification, are permitted provided that the following conditions 7193326Sed * are met: 8193326Sed * 1. Redistributions of source code must retain the above copyright 9193326Sed * notice, this list of conditions and the following disclaimer. 10193326Sed * 2. Redistributions in binary form must reproduce the above copyright 11193326Sed * notice, this list of conditions and the following disclaimer in the 12193326Sed * documentation and/or other materials provided with the distribution. 13193326Sed * 14193326Sed * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15193326Sed * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16193326Sed * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17193326Sed * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18198398Srdivacky * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19193326Sed * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20193326Sed * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21193326Sed * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22193326Sed * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23193326Sed * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24198092Srdivacky * SUCH DAMAGE. 25193326Sed */ 26193326Sed 27193326Sed#include <sys/stdint.h> 28193326Sed#include <sys/stddef.h> 29193326Sed#include <sys/param.h> 30193326Sed#include <sys/queue.h> 31193326Sed#include <sys/types.h> 32193326Sed#include <sys/systm.h> 33193326Sed#include <sys/kernel.h> 34193326Sed#include <sys/bus.h> 35193326Sed#include <sys/module.h> 36193326Sed#include <sys/lock.h> 37193326Sed#include <sys/mutex.h> 38193326Sed#include <sys/condvar.h> 39193326Sed#include <sys/sysctl.h> 40193326Sed#include <sys/sx.h> 41193326Sed#include <sys/unistd.h> 42193326Sed#include <sys/callout.h> 43193326Sed#include <sys/malloc.h> 44193326Sed#include <sys/priv.h> 45193326Sed#include <sys/conf.h> 46193326Sed#include <sys/fcntl.h> 47193326Sed 48193326Sed#include <dev/usb/usb.h> 49193326Sed#include <dev/usb/usbdi.h> 50193326Sed#include <dev/usb/usbdi_util.h> 51193326Sed#include <dev/usb/usb_ioctl.h> 52193326Sed 53193326Sed#if USB_HAVE_UGEN 54193326Sed#include <sys/sbuf.h> 55193326Sed#endif 56193326Sed 57193326Sed#include "usbdevs.h" 58193326Sed 59193326Sed#define USB_DEBUG_VAR usb_debug 60193326Sed 61193326Sed#include <dev/usb/usb_core.h> 62193326Sed#include <dev/usb/usb_debug.h> 63193326Sed#include <dev/usb/usb_process.h> 64193326Sed#include <dev/usb/usb_device.h> 65193326Sed#include <dev/usb/usb_busdma.h> 66193326Sed#include <dev/usb/usb_transfer.h> 67193326Sed#include <dev/usb/usb_request.h> 68193326Sed#include <dev/usb/usb_dynamic.h> 69198398Srdivacky#include <dev/usb/usb_hub.h> 70198398Srdivacky#include <dev/usb/usb_util.h> 71198398Srdivacky#include <dev/usb/usb_msctest.h> 72193326Sed#if USB_HAVE_UGEN 73193326Sed#include <dev/usb/usb_dev.h> 74198092Srdivacky#include <dev/usb/usb_generic.h> 75193326Sed#endif 76193326Sed 77193326Sed#include <dev/usb/quirk/usb_quirk.h> 78193326Sed 79198092Srdivacky#include <dev/usb/usb_controller.h> 80193326Sed#include <dev/usb/usb_bus.h> 81198398Srdivacky 82193326Sed/* function prototypes */ 83193326Sed 84193326Sedstatic void usb_init_endpoint(struct usb_device *, uint8_t, 85198092Srdivacky struct usb_endpoint_descriptor *, 86193326Sed struct usb_endpoint_ss_comp_descriptor *, 87193326Sed struct usb_endpoint *); 88198092Srdivackystatic void usb_unconfigure(struct usb_device *, uint8_t); 89193326Sedstatic void usb_detach_device_sub(struct usb_device *, device_t *, 90193326Sed char **, uint8_t); 91193326Sedstatic uint8_t usb_probe_and_attach_sub(struct usb_device *, 92193326Sed struct usb_attach_arg *); 93198092Srdivackystatic void usb_init_attach_arg(struct usb_device *, 94193326Sed struct usb_attach_arg *); 95193326Sedstatic void usb_suspend_resume_sub(struct usb_device *, device_t, 96193326Sed uint8_t); 97193326Sedstatic void usbd_clear_stall_proc(struct usb_proc_msg *_pm); 98193326Sedstatic usb_error_t usb_config_parse(struct usb_device *, uint8_t, uint8_t); 99198092Srdivackystatic void usbd_set_device_strings(struct usb_device *); 100193326Sed#if USB_HAVE_DEVCTL 101193326Sedstatic void usb_notify_addq(const char *type, struct usb_device *); 102193326Sed#endif 103193326Sed#if USB_HAVE_UGEN 104198092Srdivackystatic void usb_fifo_free_wrap(struct usb_device *, uint8_t, uint8_t); 105193326Sedstatic void usb_cdev_create(struct usb_device *); 106193326Sedstatic void usb_cdev_free(struct usb_device *); 107193326Sed#endif 108193326Sed 109193326Sed/* This variable is global to allow easy access to it: */ 110198092Srdivacky 111193326Sedint usb_template = 0; 112193326Sed 113198092SrdivackyTUNABLE_INT("hw.usb.usb_template", &usb_template); 114193326SedSYSCTL_INT(_hw_usb, OID_AUTO, template, CTLFLAG_RW, 115193326Sed &usb_template, 0, "Selected USB device side template"); 116193326Sed 117193326Sed/* English is default language */ 118193326Sed 119193326Sedstatic int usb_lang_id = 0x0009; 120193326Sedstatic int usb_lang_mask = 0x00FF; 121193326Sed 122193326SedTUNABLE_INT("hw.usb.usb_lang_id", &usb_lang_id); 123193326SedSYSCTL_INT(_hw_usb, OID_AUTO, usb_lang_id, CTLFLAG_RW, 124193326Sed &usb_lang_id, 0, "Preferred USB language ID"); 125193326Sed 126193326SedTUNABLE_INT("hw.usb.usb_lang_mask", &usb_lang_mask); 127198092SrdivackySYSCTL_INT(_hw_usb, OID_AUTO, usb_lang_mask, CTLFLAG_RW, 128193326Sed &usb_lang_mask, 0, "Preferred USB language mask"); 129193326Sed 130193326Sedstatic const char* statestr[USB_STATE_MAX] = { 131193326Sed [USB_STATE_DETACHED] = "DETACHED", 132193326Sed [USB_STATE_ATTACHED] = "ATTACHED", 133193326Sed [USB_STATE_POWERED] = "POWERED", 134198092Srdivacky [USB_STATE_ADDRESSED] = "ADDRESSED", 135193326Sed [USB_STATE_CONFIGURED] = "CONFIGURED", 136193326Sed}; 137193326Sed 138193326Sedconst char * 139193326Sedusb_statestr(enum usb_dev_state state) 140193326Sed{ 141193326Sed return ((state < USB_STATE_MAX) ? statestr[state] : "UNKNOWN"); 142193326Sed} 143193326Sed 144193326Sedconst char * 145193326Sedusb_get_manufacturer(struct usb_device *udev) 146193326Sed{ 147193326Sed return (udev->manufacturer ? udev->manufacturer : "Unknown"); 148193326Sed} 149193326Sed 150193326Sedconst char * 151193326Sedusb_get_product(struct usb_device *udev) 152193326Sed{ 153193326Sed return (udev->product ? udev->product : ""); 154193326Sed} 155198092Srdivacky 156193326Sedconst char * 157193326Sedusb_get_serial(struct usb_device *udev) 158198092Srdivacky{ 159193326Sed return (udev->serial ? udev->serial : ""); 160198092Srdivacky} 161193326Sed 162198092Srdivacky/*------------------------------------------------------------------------* 163193326Sed * usbd_get_ep_by_addr 164193326Sed * 165193326Sed * This function searches for an USB ep by endpoint address and 166198092Srdivacky * direction. 167193326Sed * 168193326Sed * Returns: 169193326Sed * NULL: Failure 170193326Sed * Else: Success 171193326Sed *------------------------------------------------------------------------*/ 172193326Sedstruct usb_endpoint * 173193326Sedusbd_get_ep_by_addr(struct usb_device *udev, uint8_t ea_val) 174193326Sed{ 175193326Sed struct usb_endpoint *ep = udev->endpoints; 176193326Sed struct usb_endpoint *ep_end = udev->endpoints + udev->endpoints_max; 177193326Sed enum { 178193326Sed EA_MASK = (UE_DIR_IN | UE_DIR_OUT | UE_ADDR), 179193326Sed }; 180193326Sed 181193326Sed /* 182193326Sed * According to the USB specification not all bits are used 183193326Sed * for the endpoint address. Keep defined bits only: 184193326Sed */ 185193326Sed ea_val &= EA_MASK; 186193326Sed 187193326Sed /* 188193326Sed * Iterate accross all the USB endpoints searching for a match 189193326Sed * based on the endpoint address: 190193326Sed */ 191193326Sed for (; ep != ep_end; ep++) { 192193326Sed 193193326Sed if (ep->edesc == NULL) { 194193326Sed continue; 195193326Sed } 196193326Sed /* do the mask and check the value */ 197193326Sed if ((ep->edesc->bEndpointAddress & EA_MASK) == ea_val) { 198193326Sed goto found; 199193326Sed } 200193326Sed } 201193326Sed 202193326Sed /* 203193326Sed * The default endpoint is always present and is checked separately: 204193326Sed */ 205193326Sed if ((udev->ctrl_ep.edesc) && 206193326Sed ((udev->ctrl_ep.edesc->bEndpointAddress & EA_MASK) == ea_val)) { 207193326Sed ep = &udev->ctrl_ep; 208193326Sed goto found; 209193326Sed } 210193326Sed return (NULL); 211193326Sed 212193326Sedfound: 213193326Sed return (ep); 214193326Sed} 215193326Sed 216193326Sed/*------------------------------------------------------------------------* 217198092Srdivacky * usbd_get_endpoint 218193326Sed * 219193326Sed * This function searches for an USB endpoint based on the information 220193326Sed * given by the passed "struct usb_config" pointer. 221193326Sed * 222193326Sed * Return values: 223193326Sed * NULL: No match. 224193326Sed * Else: Pointer to "struct usb_endpoint". 225193326Sed *------------------------------------------------------------------------*/ 226193326Sedstruct usb_endpoint * 227193326Sedusbd_get_endpoint(struct usb_device *udev, uint8_t iface_index, 228193326Sed const struct usb_config *setup) 229193326Sed{ 230193326Sed struct usb_endpoint *ep = udev->endpoints; 231193326Sed struct usb_endpoint *ep_end = udev->endpoints + udev->endpoints_max; 232193326Sed uint8_t index = setup->ep_index; 233193326Sed uint8_t ea_mask; 234193326Sed uint8_t ea_val; 235193326Sed uint8_t type_mask; 236193326Sed uint8_t type_val; 237193326Sed 238193326Sed DPRINTFN(10, "udev=%p iface_index=%d address=0x%x " 239193326Sed "type=0x%x dir=0x%x index=%d\n", 240193326Sed udev, iface_index, setup->endpoint, 241193326Sed setup->type, setup->direction, setup->ep_index); 242193326Sed 243193326Sed /* check USB mode */ 244193326Sed 245193326Sed if (setup->usb_mode != USB_MODE_DUAL && 246193326Sed udev->flags.usb_mode != setup->usb_mode) { 247193326Sed /* wrong mode - no endpoint */ 248193326Sed return (NULL); 249193326Sed } 250193326Sed 251193326Sed /* setup expected endpoint direction mask and value */ 252193326Sed 253193326Sed if (setup->direction == UE_DIR_RX) { 254193326Sed ea_mask = (UE_DIR_IN | UE_DIR_OUT); 255193326Sed ea_val = (udev->flags.usb_mode == USB_MODE_DEVICE) ? 256193326Sed UE_DIR_OUT : UE_DIR_IN; 257193326Sed } else if (setup->direction == UE_DIR_TX) { 258193326Sed ea_mask = (UE_DIR_IN | UE_DIR_OUT); 259193326Sed ea_val = (udev->flags.usb_mode == USB_MODE_DEVICE) ? 260193326Sed UE_DIR_IN : UE_DIR_OUT; 261193326Sed } else if (setup->direction == UE_DIR_ANY) { 262193326Sed /* match any endpoint direction */ 263193326Sed ea_mask = 0; 264193326Sed ea_val = 0; 265193326Sed } else { 266193326Sed /* match the given endpoint direction */ 267193326Sed ea_mask = (UE_DIR_IN | UE_DIR_OUT); 268193326Sed ea_val = (setup->direction & (UE_DIR_IN | UE_DIR_OUT)); 269193326Sed } 270193326Sed 271198092Srdivacky /* setup expected endpoint address */ 272193326Sed 273193326Sed if (setup->endpoint == UE_ADDR_ANY) { 274193326Sed /* match any endpoint address */ 275193326Sed } else { 276193326Sed /* match the given endpoint address */ 277198092Srdivacky ea_mask |= UE_ADDR; 278193326Sed ea_val |= (setup->endpoint & UE_ADDR); 279193326Sed } 280193326Sed 281193326Sed /* setup expected endpoint type */ 282193326Sed 283193326Sed if (setup->type == UE_BULK_INTR) { 284193326Sed /* this will match BULK and INTERRUPT endpoints */ 285193326Sed type_mask = 2; 286193326Sed type_val = 2; 287193326Sed } else if (setup->type == UE_TYPE_ANY) { 288193326Sed /* match any endpoint type */ 289193326Sed type_mask = 0; 290193326Sed type_val = 0; 291193326Sed } else { 292193326Sed /* match the given endpoint type */ 293193326Sed type_mask = UE_XFERTYPE; 294193326Sed type_val = (setup->type & UE_XFERTYPE); 295193326Sed } 296193326Sed 297193326Sed /* 298193326Sed * Iterate accross all the USB endpoints searching for a match 299193326Sed * based on the endpoint address. Note that we are searching 300193326Sed * the endpoints from the beginning of the "udev->endpoints" array. 301193326Sed */ 302193326Sed for (; ep != ep_end; ep++) { 303193326Sed 304193326Sed if ((ep->edesc == NULL) || 305193326Sed (ep->iface_index != iface_index)) { 306193326Sed continue; 307193326Sed } 308193326Sed /* do the masks and check the values */ 309193326Sed 310 if (((ep->edesc->bEndpointAddress & ea_mask) == ea_val) && 311 ((ep->edesc->bmAttributes & type_mask) == type_val)) { 312 if (!index--) { 313 goto found; 314 } 315 } 316 } 317 318 /* 319 * Match against default endpoint last, so that "any endpoint", "any 320 * address" and "any direction" returns the first endpoint of the 321 * interface. "iface_index" and "direction" is ignored: 322 */ 323 if ((udev->ctrl_ep.edesc) && 324 ((udev->ctrl_ep.edesc->bEndpointAddress & ea_mask) == ea_val) && 325 ((udev->ctrl_ep.edesc->bmAttributes & type_mask) == type_val) && 326 (!index)) { 327 ep = &udev->ctrl_ep; 328 goto found; 329 } 330 return (NULL); 331 332found: 333 return (ep); 334} 335 336/*------------------------------------------------------------------------* 337 * usbd_interface_count 338 * 339 * This function stores the number of USB interfaces excluding 340 * alternate settings, which the USB config descriptor reports into 341 * the unsigned 8-bit integer pointed to by "count". 342 * 343 * Returns: 344 * 0: Success 345 * Else: Failure 346 *------------------------------------------------------------------------*/ 347usb_error_t 348usbd_interface_count(struct usb_device *udev, uint8_t *count) 349{ 350 if (udev->cdesc == NULL) { 351 *count = 0; 352 return (USB_ERR_NOT_CONFIGURED); 353 } 354 *count = udev->ifaces_max; 355 return (USB_ERR_NORMAL_COMPLETION); 356} 357 358 359/*------------------------------------------------------------------------* 360 * usb_init_endpoint 361 * 362 * This function will initialise the USB endpoint structure pointed to by 363 * the "endpoint" argument. The structure pointed to by "endpoint" must be 364 * zeroed before calling this function. 365 *------------------------------------------------------------------------*/ 366static void 367usb_init_endpoint(struct usb_device *udev, uint8_t iface_index, 368 struct usb_endpoint_descriptor *edesc, 369 struct usb_endpoint_ss_comp_descriptor *ecomp, 370 struct usb_endpoint *ep) 371{ 372 struct usb_bus_methods *methods; 373 374 methods = udev->bus->methods; 375 376 (methods->endpoint_init) (udev, edesc, ep); 377 378 /* initialise USB endpoint structure */ 379 ep->edesc = edesc; 380 ep->ecomp = ecomp; 381 ep->iface_index = iface_index; 382 TAILQ_INIT(&ep->endpoint_q.head); 383 ep->endpoint_q.command = &usbd_pipe_start; 384 385 /* the pipe is not supported by the hardware */ 386 if (ep->methods == NULL) 387 return; 388 389 /* clear stall, if any */ 390 if (methods->clear_stall != NULL) { 391 USB_BUS_LOCK(udev->bus); 392 (methods->clear_stall) (udev, ep); 393 USB_BUS_UNLOCK(udev->bus); 394 } 395} 396 397/*-----------------------------------------------------------------------* 398 * usb_endpoint_foreach 399 * 400 * This function will iterate all the USB endpoints except the control 401 * endpoint. This function is NULL safe. 402 * 403 * Return values: 404 * NULL: End of USB endpoints 405 * Else: Pointer to next USB endpoint 406 *------------------------------------------------------------------------*/ 407struct usb_endpoint * 408usb_endpoint_foreach(struct usb_device *udev, struct usb_endpoint *ep) 409{ 410 struct usb_endpoint *ep_end; 411 412 /* be NULL safe */ 413 if (udev == NULL) 414 return (NULL); 415 416 ep_end = udev->endpoints + udev->endpoints_max; 417 418 /* get next endpoint */ 419 if (ep == NULL) 420 ep = udev->endpoints; 421 else 422 ep++; 423 424 /* find next allocated ep */ 425 while (ep != ep_end) { 426 if (ep->edesc != NULL) 427 return (ep); 428 ep++; 429 } 430 return (NULL); 431} 432 433/*------------------------------------------------------------------------* 434 * usb_unconfigure 435 * 436 * This function will free all USB interfaces and USB endpoints belonging 437 * to an USB device. 438 * 439 * Flag values, see "USB_UNCFG_FLAG_XXX". 440 *------------------------------------------------------------------------*/ 441static void 442usb_unconfigure(struct usb_device *udev, uint8_t flag) 443{ 444 uint8_t do_unlock; 445 446 /* automatic locking */ 447 if (usbd_enum_is_locked(udev)) { 448 do_unlock = 0; 449 } else { 450 do_unlock = 1; 451 usbd_enum_lock(udev); 452 } 453 454 /* detach all interface drivers */ 455 usb_detach_device(udev, USB_IFACE_INDEX_ANY, flag); 456 457#if USB_HAVE_UGEN 458 /* free all FIFOs except control endpoint FIFOs */ 459 usb_fifo_free_wrap(udev, USB_IFACE_INDEX_ANY, flag); 460 461 /* 462 * Free all cdev's, if any. 463 */ 464 usb_cdev_free(udev); 465#endif 466 467#if USB_HAVE_COMPAT_LINUX 468 /* free Linux compat device, if any */ 469 if (udev->linux_endpoint_start) { 470 usb_linux_free_device(udev); 471 udev->linux_endpoint_start = NULL; 472 } 473#endif 474 475 usb_config_parse(udev, USB_IFACE_INDEX_ANY, USB_CFG_FREE); 476 477 /* free "cdesc" after "ifaces" and "endpoints", if any */ 478 if (udev->cdesc != NULL) { 479 if (udev->flags.usb_mode != USB_MODE_DEVICE) 480 free(udev->cdesc, M_USB); 481 udev->cdesc = NULL; 482 } 483 /* set unconfigured state */ 484 udev->curr_config_no = USB_UNCONFIG_NO; 485 udev->curr_config_index = USB_UNCONFIG_INDEX; 486 487 if (do_unlock) 488 usbd_enum_unlock(udev); 489} 490 491/*------------------------------------------------------------------------* 492 * usbd_set_config_index 493 * 494 * This function selects configuration by index, independent of the 495 * actual configuration number. This function should not be used by 496 * USB drivers. 497 * 498 * Returns: 499 * 0: Success 500 * Else: Failure 501 *------------------------------------------------------------------------*/ 502usb_error_t 503usbd_set_config_index(struct usb_device *udev, uint8_t index) 504{ 505 struct usb_status ds; 506 struct usb_config_descriptor *cdp; 507 uint16_t power; 508 uint16_t max_power; 509 uint8_t selfpowered; 510 uint8_t do_unlock; 511 usb_error_t err; 512 513 DPRINTFN(6, "udev=%p index=%d\n", udev, index); 514 515 /* automatic locking */ 516 if (usbd_enum_is_locked(udev)) { 517 do_unlock = 0; 518 } else { 519 do_unlock = 1; 520 usbd_enum_lock(udev); 521 } 522 523 usb_unconfigure(udev, 0); 524 525 if (index == USB_UNCONFIG_INDEX) { 526 /* 527 * Leave unallocated when unconfiguring the 528 * device. "usb_unconfigure()" will also reset 529 * the current config number and index. 530 */ 531 err = usbd_req_set_config(udev, NULL, USB_UNCONFIG_NO); 532 if (udev->state == USB_STATE_CONFIGURED) 533 usb_set_device_state(udev, USB_STATE_ADDRESSED); 534 goto done; 535 } 536 /* get the full config descriptor */ 537 if (udev->flags.usb_mode == USB_MODE_DEVICE) { 538 /* save some memory */ 539 err = usbd_req_get_descriptor_ptr(udev, &cdp, 540 (UDESC_CONFIG << 8) | index); 541 } else { 542 /* normal request */ 543 err = usbd_req_get_config_desc_full(udev, 544 NULL, &cdp, M_USB, index); 545 } 546 if (err) { 547 goto done; 548 } 549 /* set the new config descriptor */ 550 551 udev->cdesc = cdp; 552 553 /* Figure out if the device is self or bus powered. */ 554 selfpowered = 0; 555 if ((!udev->flags.uq_bus_powered) && 556 (cdp->bmAttributes & UC_SELF_POWERED) && 557 (udev->flags.usb_mode == USB_MODE_HOST)) { 558 /* May be self powered. */ 559 if (cdp->bmAttributes & UC_BUS_POWERED) { 560 /* Must ask device. */ 561 err = usbd_req_get_device_status(udev, NULL, &ds); 562 if (err) { 563 DPRINTFN(0, "could not read " 564 "device status: %s\n", 565 usbd_errstr(err)); 566 } else if (UGETW(ds.wStatus) & UDS_SELF_POWERED) { 567 selfpowered = 1; 568 } 569 DPRINTF("status=0x%04x \n", 570 UGETW(ds.wStatus)); 571 } else 572 selfpowered = 1; 573 } 574 DPRINTF("udev=%p cdesc=%p (addr %d) cno=%d attr=0x%02x, " 575 "selfpowered=%d, power=%d\n", 576 udev, cdp, 577 udev->address, cdp->bConfigurationValue, cdp->bmAttributes, 578 selfpowered, cdp->bMaxPower * 2); 579 580 /* Check if we have enough power. */ 581 power = cdp->bMaxPower * 2; 582 583 if (udev->parent_hub) { 584 max_power = udev->parent_hub->hub->portpower; 585 } else { 586 max_power = USB_MAX_POWER; 587 } 588 589 if (power > max_power) { 590 DPRINTFN(0, "power exceeded %d > %d\n", power, max_power); 591 err = USB_ERR_NO_POWER; 592 goto done; 593 } 594 /* Only update "self_powered" in USB Host Mode */ 595 if (udev->flags.usb_mode == USB_MODE_HOST) { 596 udev->flags.self_powered = selfpowered; 597 } 598 udev->power = power; 599 udev->curr_config_no = cdp->bConfigurationValue; 600 udev->curr_config_index = index; 601 usb_set_device_state(udev, USB_STATE_CONFIGURED); 602 603 /* Set the actual configuration value. */ 604 err = usbd_req_set_config(udev, NULL, cdp->bConfigurationValue); 605 if (err) { 606 goto done; 607 } 608 609 err = usb_config_parse(udev, USB_IFACE_INDEX_ANY, USB_CFG_ALLOC); 610 if (err) { 611 goto done; 612 } 613 614 err = usb_config_parse(udev, USB_IFACE_INDEX_ANY, USB_CFG_INIT); 615 if (err) { 616 goto done; 617 } 618 619#if USB_HAVE_UGEN 620 /* create device nodes for each endpoint */ 621 usb_cdev_create(udev); 622#endif 623 624done: 625 DPRINTF("error=%s\n", usbd_errstr(err)); 626 if (err) { 627 usb_unconfigure(udev, 0); 628 } 629 if (do_unlock) 630 usbd_enum_unlock(udev); 631 return (err); 632} 633 634/*------------------------------------------------------------------------* 635 * usb_config_parse 636 * 637 * This function will allocate and free USB interfaces and USB endpoints, 638 * parse the USB configuration structure and initialise the USB endpoints 639 * and interfaces. If "iface_index" is not equal to 640 * "USB_IFACE_INDEX_ANY" then the "cmd" parameter is the 641 * alternate_setting to be selected for the given interface. Else the 642 * "cmd" parameter is defined by "USB_CFG_XXX". "iface_index" can be 643 * "USB_IFACE_INDEX_ANY" or a valid USB interface index. This function 644 * is typically called when setting the configuration or when setting 645 * an alternate interface. 646 * 647 * Returns: 648 * 0: Success 649 * Else: Failure 650 *------------------------------------------------------------------------*/ 651static usb_error_t 652usb_config_parse(struct usb_device *udev, uint8_t iface_index, uint8_t cmd) 653{ 654 struct usb_idesc_parse_state ips; 655 struct usb_interface_descriptor *id; 656 struct usb_endpoint_descriptor *ed; 657 struct usb_interface *iface; 658 struct usb_endpoint *ep; 659 usb_error_t err; 660 uint8_t ep_curr; 661 uint8_t ep_max; 662 uint8_t temp; 663 uint8_t do_init; 664 uint8_t alt_index; 665 666 if (iface_index != USB_IFACE_INDEX_ANY) { 667 /* parameter overload */ 668 alt_index = cmd; 669 cmd = USB_CFG_INIT; 670 } else { 671 /* not used */ 672 alt_index = 0; 673 } 674 675 err = 0; 676 677 DPRINTFN(5, "iface_index=%d cmd=%d\n", 678 iface_index, cmd); 679 680 if (cmd == USB_CFG_FREE) 681 goto cleanup; 682 683 if (cmd == USB_CFG_INIT) { 684 sx_assert(&udev->enum_sx, SA_LOCKED); 685 686 /* check for in-use endpoints */ 687 688 ep = udev->endpoints; 689 ep_max = udev->endpoints_max; 690 while (ep_max--) { 691 /* look for matching endpoints */ 692 if ((iface_index == USB_IFACE_INDEX_ANY) || 693 (iface_index == ep->iface_index)) { 694 if (ep->refcount_alloc != 0) { 695 /* 696 * This typically indicates a 697 * more serious error. 698 */ 699 err = USB_ERR_IN_USE; 700 } else { 701 /* reset endpoint */ 702 memset(ep, 0, sizeof(*ep)); 703 /* make sure we don't zero the endpoint again */ 704 ep->iface_index = USB_IFACE_INDEX_ANY; 705 } 706 } 707 ep++; 708 } 709 710 if (err) 711 return (err); 712 } 713 714 memset(&ips, 0, sizeof(ips)); 715 716 ep_curr = 0; 717 ep_max = 0; 718 719 while ((id = usb_idesc_foreach(udev->cdesc, &ips))) { 720 721 /* check for interface overflow */ 722 if (ips.iface_index == USB_IFACE_MAX) 723 break; /* crazy */ 724 725 iface = udev->ifaces + ips.iface_index; 726 727 /* check for specific interface match */ 728 729 if (cmd == USB_CFG_INIT) { 730 if ((iface_index != USB_IFACE_INDEX_ANY) && 731 (iface_index != ips.iface_index)) { 732 /* wrong interface */ 733 do_init = 0; 734 } else if (alt_index != ips.iface_index_alt) { 735 /* wrong alternate setting */ 736 do_init = 0; 737 } else { 738 /* initialise interface */ 739 do_init = 1; 740 } 741 } else 742 do_init = 0; 743 744 /* check for new interface */ 745 if (ips.iface_index_alt == 0) { 746 /* update current number of endpoints */ 747 ep_curr = ep_max; 748 } 749 /* check for init */ 750 if (do_init) { 751 /* setup the USB interface structure */ 752 iface->idesc = id; 753 /* default setting */ 754 iface->parent_iface_index = USB_IFACE_INDEX_ANY; 755 /* set alternate index */ 756 iface->alt_index = alt_index; 757 } 758 759 DPRINTFN(5, "found idesc nendpt=%d\n", id->bNumEndpoints); 760 761 ed = (struct usb_endpoint_descriptor *)id; 762 763 temp = ep_curr; 764 765 /* iterate all the endpoint descriptors */ 766 while ((ed = usb_edesc_foreach(udev->cdesc, ed))) { 767 768 if (temp == USB_EP_MAX) 769 break; /* crazy */ 770 771 ep = udev->endpoints + temp; 772 773 if (do_init) { 774 void *ecomp; 775 776 ecomp = usb_ed_comp_foreach(udev->cdesc, (void *)ed); 777 if (ecomp != NULL) 778 DPRINTFN(5, "Found endpoint companion descriptor\n"); 779 780 usb_init_endpoint(udev, 781 ips.iface_index, ed, ecomp, ep); 782 } 783 784 temp ++; 785 786 /* find maximum number of endpoints */ 787 if (ep_max < temp) 788 ep_max = temp; 789 790 /* optimalisation */ 791 id = (struct usb_interface_descriptor *)ed; 792 } 793 } 794 795 /* NOTE: It is valid to have no interfaces and no endpoints! */ 796 797 if (cmd == USB_CFG_ALLOC) { 798 udev->ifaces_max = ips.iface_index; 799 udev->ifaces = NULL; 800 if (udev->ifaces_max != 0) { 801 udev->ifaces = malloc(sizeof(*iface) * udev->ifaces_max, 802 M_USB, M_WAITOK | M_ZERO); 803 if (udev->ifaces == NULL) { 804 err = USB_ERR_NOMEM; 805 goto done; 806 } 807 } 808 if (ep_max != 0) { 809 udev->endpoints = malloc(sizeof(*ep) * ep_max, 810 M_USB, M_WAITOK | M_ZERO); 811 if (udev->endpoints == NULL) { 812 err = USB_ERR_NOMEM; 813 goto done; 814 } 815 } else { 816 udev->endpoints = NULL; 817 } 818 USB_BUS_LOCK(udev->bus); 819 udev->endpoints_max = ep_max; 820 /* reset any ongoing clear-stall */ 821 udev->ep_curr = NULL; 822 USB_BUS_UNLOCK(udev->bus); 823 } 824 825done: 826 if (err) { 827 if (cmd == USB_CFG_ALLOC) { 828cleanup: 829 USB_BUS_LOCK(udev->bus); 830 udev->endpoints_max = 0; 831 /* reset any ongoing clear-stall */ 832 udev->ep_curr = NULL; 833 USB_BUS_UNLOCK(udev->bus); 834 835 /* cleanup */ 836 if (udev->ifaces != NULL) 837 free(udev->ifaces, M_USB); 838 if (udev->endpoints != NULL) 839 free(udev->endpoints, M_USB); 840 841 udev->ifaces = NULL; 842 udev->endpoints = NULL; 843 udev->ifaces_max = 0; 844 } 845 } 846 return (err); 847} 848 849/*------------------------------------------------------------------------* 850 * usbd_set_alt_interface_index 851 * 852 * This function will select an alternate interface index for the 853 * given interface index. The interface should not be in use when this 854 * function is called. That means there should not be any open USB 855 * transfers. Else an error is returned. If the alternate setting is 856 * already set this function will simply return success. This function 857 * is called in Host mode and Device mode! 858 * 859 * Returns: 860 * 0: Success 861 * Else: Failure 862 *------------------------------------------------------------------------*/ 863usb_error_t 864usbd_set_alt_interface_index(struct usb_device *udev, 865 uint8_t iface_index, uint8_t alt_index) 866{ 867 struct usb_interface *iface = usbd_get_iface(udev, iface_index); 868 usb_error_t err; 869 uint8_t do_unlock; 870 871 /* automatic locking */ 872 if (usbd_enum_is_locked(udev)) { 873 do_unlock = 0; 874 } else { 875 do_unlock = 1; 876 usbd_enum_lock(udev); 877 } 878 if (iface == NULL) { 879 err = USB_ERR_INVAL; 880 goto done; 881 } 882 if (iface->alt_index == alt_index) { 883 /* 884 * Optimise away duplicate setting of 885 * alternate setting in USB Host Mode! 886 */ 887 err = 0; 888 goto done; 889 } 890#if USB_HAVE_UGEN 891 /* 892 * Free all generic FIFOs for this interface, except control 893 * endpoint FIFOs: 894 */ 895 usb_fifo_free_wrap(udev, iface_index, 0); 896#endif 897 898 err = usb_config_parse(udev, iface_index, alt_index); 899 if (err) { 900 goto done; 901 } 902 if (iface->alt_index != alt_index) { 903 /* the alternate setting does not exist */ 904 err = USB_ERR_INVAL; 905 goto done; 906 } 907 908 err = usbd_req_set_alt_interface_no(udev, NULL, iface_index, 909 iface->idesc->bAlternateSetting); 910 911done: 912 if (do_unlock) 913 usbd_enum_unlock(udev); 914 915 return (err); 916} 917 918/*------------------------------------------------------------------------* 919 * usbd_set_endpoint_stall 920 * 921 * This function is used to make a BULK or INTERRUPT endpoint send 922 * STALL tokens in USB device mode. 923 * 924 * Returns: 925 * 0: Success 926 * Else: Failure 927 *------------------------------------------------------------------------*/ 928usb_error_t 929usbd_set_endpoint_stall(struct usb_device *udev, struct usb_endpoint *ep, 930 uint8_t do_stall) 931{ 932 struct usb_xfer *xfer; 933 uint8_t et; 934 uint8_t was_stalled; 935 936 if (ep == NULL) { 937 /* nothing to do */ 938 DPRINTF("Cannot find endpoint\n"); 939 /* 940 * Pretend that the clear or set stall request is 941 * successful else some USB host stacks can do 942 * strange things, especially when a control endpoint 943 * stalls. 944 */ 945 return (0); 946 } 947 et = (ep->edesc->bmAttributes & UE_XFERTYPE); 948 949 if ((et != UE_BULK) && 950 (et != UE_INTERRUPT)) { 951 /* 952 * Should not stall control 953 * nor isochronous endpoints. 954 */ 955 DPRINTF("Invalid endpoint\n"); 956 return (0); 957 } 958 USB_BUS_LOCK(udev->bus); 959 960 /* store current stall state */ 961 was_stalled = ep->is_stalled; 962 963 /* check for no change */ 964 if (was_stalled && do_stall) { 965 /* if the endpoint is already stalled do nothing */ 966 USB_BUS_UNLOCK(udev->bus); 967 DPRINTF("No change\n"); 968 return (0); 969 } 970 /* set stalled state */ 971 ep->is_stalled = 1; 972 973 if (do_stall || (!was_stalled)) { 974 if (!was_stalled) { 975 /* lookup the current USB transfer, if any */ 976 xfer = ep->endpoint_q.curr; 977 } else { 978 xfer = NULL; 979 } 980 981 /* 982 * If "xfer" is non-NULL the "set_stall" method will 983 * complete the USB transfer like in case of a timeout 984 * setting the error code "USB_ERR_STALLED". 985 */ 986 (udev->bus->methods->set_stall) (udev, xfer, ep, &do_stall); 987 } 988 if (!do_stall) { 989 ep->toggle_next = 0; /* reset data toggle */ 990 ep->is_stalled = 0; /* clear stalled state */ 991 992 (udev->bus->methods->clear_stall) (udev, ep); 993 994 /* start up the current or next transfer, if any */ 995 usb_command_wrapper(&ep->endpoint_q, ep->endpoint_q.curr); 996 } 997 USB_BUS_UNLOCK(udev->bus); 998 return (0); 999} 1000 1001/*------------------------------------------------------------------------* 1002 * usb_reset_iface_endpoints - used in USB device side mode 1003 *------------------------------------------------------------------------*/ 1004usb_error_t 1005usb_reset_iface_endpoints(struct usb_device *udev, uint8_t iface_index) 1006{ 1007 struct usb_endpoint *ep; 1008 struct usb_endpoint *ep_end; 1009 1010 ep = udev->endpoints; 1011 ep_end = udev->endpoints + udev->endpoints_max; 1012 1013 for (; ep != ep_end; ep++) { 1014 1015 if ((ep->edesc == NULL) || 1016 (ep->iface_index != iface_index)) { 1017 continue; 1018 } 1019 /* simulate a clear stall from the peer */ 1020 usbd_set_endpoint_stall(udev, ep, 0); 1021 } 1022 return (0); 1023} 1024 1025/*------------------------------------------------------------------------* 1026 * usb_detach_device_sub 1027 * 1028 * This function will try to detach an USB device. If it fails a panic 1029 * will result. 1030 * 1031 * Flag values, see "USB_UNCFG_FLAG_XXX". 1032 *------------------------------------------------------------------------*/ 1033static void 1034usb_detach_device_sub(struct usb_device *udev, device_t *ppdev, 1035 char **ppnpinfo, uint8_t flag) 1036{ 1037 device_t dev; 1038 char *pnpinfo; 1039 int err; 1040 1041 dev = *ppdev; 1042 if (dev) { 1043 /* 1044 * NOTE: It is important to clear "*ppdev" before deleting 1045 * the child due to some device methods being called late 1046 * during the delete process ! 1047 */ 1048 *ppdev = NULL; 1049 1050 device_printf(dev, "at %s, port %d, addr %d " 1051 "(disconnected)\n", 1052 device_get_nameunit(udev->parent_dev), 1053 udev->port_no, udev->address); 1054 1055 if (device_is_attached(dev)) { 1056 if (udev->flags.peer_suspended) { 1057 err = DEVICE_RESUME(dev); 1058 if (err) { 1059 device_printf(dev, "Resume failed\n"); 1060 } 1061 } 1062 if (device_detach(dev)) { 1063 goto error; 1064 } 1065 } 1066 if (device_delete_child(udev->parent_dev, dev)) { 1067 goto error; 1068 } 1069 } 1070 1071 pnpinfo = *ppnpinfo; 1072 if (pnpinfo != NULL) { 1073 *ppnpinfo = NULL; 1074 free(pnpinfo, M_USBDEV); 1075 } 1076 return; 1077 1078error: 1079 /* Detach is not allowed to fail in the USB world */ 1080 panic("usb_detach_device_sub: A USB driver would not detach\n"); 1081} 1082 1083/*------------------------------------------------------------------------* 1084 * usb_detach_device 1085 * 1086 * The following function will detach the matching interfaces. 1087 * This function is NULL safe. 1088 * 1089 * Flag values, see "USB_UNCFG_FLAG_XXX". 1090 *------------------------------------------------------------------------*/ 1091void 1092usb_detach_device(struct usb_device *udev, uint8_t iface_index, 1093 uint8_t flag) 1094{ 1095 struct usb_interface *iface; 1096 uint8_t i; 1097 1098 if (udev == NULL) { 1099 /* nothing to do */ 1100 return; 1101 } 1102 DPRINTFN(4, "udev=%p\n", udev); 1103 1104 sx_assert(&udev->enum_sx, SA_LOCKED); 1105 1106 /* 1107 * First detach the child to give the child's detach routine a 1108 * chance to detach the sub-devices in the correct order. 1109 * Then delete the child using "device_delete_child()" which 1110 * will detach all sub-devices from the bottom and upwards! 1111 */ 1112 if (iface_index != USB_IFACE_INDEX_ANY) { 1113 i = iface_index; 1114 iface_index = i + 1; 1115 } else { 1116 i = 0; 1117 iface_index = USB_IFACE_MAX; 1118 } 1119 1120 /* do the detach */ 1121 1122 for (; i != iface_index; i++) { 1123 1124 iface = usbd_get_iface(udev, i); 1125 if (iface == NULL) { 1126 /* looks like the end of the USB interfaces */ 1127 break; 1128 } 1129 usb_detach_device_sub(udev, &iface->subdev, 1130 &iface->pnpinfo, flag); 1131 } 1132} 1133 1134/*------------------------------------------------------------------------* 1135 * usb_probe_and_attach_sub 1136 * 1137 * Returns: 1138 * 0: Success 1139 * Else: Failure 1140 *------------------------------------------------------------------------*/ 1141static uint8_t 1142usb_probe_and_attach_sub(struct usb_device *udev, 1143 struct usb_attach_arg *uaa) 1144{ 1145 struct usb_interface *iface; 1146 device_t dev; 1147 int err; 1148 1149 iface = uaa->iface; 1150 if (iface->parent_iface_index != USB_IFACE_INDEX_ANY) { 1151 /* leave interface alone */ 1152 return (0); 1153 } 1154 dev = iface->subdev; 1155 if (dev) { 1156 1157 /* clean up after module unload */ 1158 1159 if (device_is_attached(dev)) { 1160 /* already a device there */ 1161 return (0); 1162 } 1163 /* clear "iface->subdev" as early as possible */ 1164 1165 iface->subdev = NULL; 1166 1167 if (device_delete_child(udev->parent_dev, dev)) { 1168 1169 /* 1170 * Panic here, else one can get a double call 1171 * to device_detach(). USB devices should 1172 * never fail on detach! 1173 */ 1174 panic("device_delete_child() failed\n"); 1175 } 1176 } 1177 if (uaa->temp_dev == NULL) { 1178 1179 /* create a new child */ 1180 uaa->temp_dev = device_add_child(udev->parent_dev, NULL, -1); 1181 if (uaa->temp_dev == NULL) { 1182 device_printf(udev->parent_dev, 1183 "Device creation failed\n"); 1184 return (1); /* failure */ 1185 } 1186 device_set_ivars(uaa->temp_dev, uaa); 1187 device_quiet(uaa->temp_dev); 1188 } 1189 /* 1190 * Set "subdev" before probe and attach so that "devd" gets 1191 * the information it needs. 1192 */ 1193 iface->subdev = uaa->temp_dev; 1194 1195 if (device_probe_and_attach(iface->subdev) == 0) { 1196 /* 1197 * The USB attach arguments are only available during probe 1198 * and attach ! 1199 */ 1200 uaa->temp_dev = NULL; 1201 device_set_ivars(iface->subdev, NULL); 1202 1203 if (udev->flags.peer_suspended) { 1204 err = DEVICE_SUSPEND(iface->subdev); 1205 if (err) 1206 device_printf(iface->subdev, "Suspend failed\n"); 1207 } 1208 return (0); /* success */ 1209 } else { 1210 /* No USB driver found */ 1211 iface->subdev = NULL; 1212 } 1213 return (1); /* failure */ 1214} 1215 1216/*------------------------------------------------------------------------* 1217 * usbd_set_parent_iface 1218 * 1219 * Using this function will lock the alternate interface setting on an 1220 * interface. It is typically used for multi interface drivers. In USB 1221 * device side mode it is assumed that the alternate interfaces all 1222 * have the same endpoint descriptors. The default parent index value 1223 * is "USB_IFACE_INDEX_ANY". Then the alternate setting value is not 1224 * locked. 1225 *------------------------------------------------------------------------*/ 1226void 1227usbd_set_parent_iface(struct usb_device *udev, uint8_t iface_index, 1228 uint8_t parent_index) 1229{ 1230 struct usb_interface *iface; 1231 1232 iface = usbd_get_iface(udev, iface_index); 1233 if (iface) { 1234 iface->parent_iface_index = parent_index; 1235 } 1236} 1237 1238static void 1239usb_init_attach_arg(struct usb_device *udev, 1240 struct usb_attach_arg *uaa) 1241{ 1242 uint8_t x; 1243 1244 memset(uaa, 0, sizeof(*uaa)); 1245 1246 uaa->device = udev; 1247 uaa->usb_mode = udev->flags.usb_mode; 1248 uaa->port = udev->port_no; 1249 uaa->dev_state = UAA_DEV_READY; 1250 1251 uaa->info.idVendor = UGETW(udev->ddesc.idVendor); 1252 uaa->info.idProduct = UGETW(udev->ddesc.idProduct); 1253 uaa->info.bcdDevice = UGETW(udev->ddesc.bcdDevice); 1254 uaa->info.bDeviceClass = udev->ddesc.bDeviceClass; 1255 uaa->info.bDeviceSubClass = udev->ddesc.bDeviceSubClass; 1256 uaa->info.bDeviceProtocol = udev->ddesc.bDeviceProtocol; 1257 uaa->info.bConfigIndex = udev->curr_config_index; 1258 uaa->info.bConfigNum = udev->curr_config_no; 1259 1260 for (x = 0; x != USB_MAX_AUTO_QUIRK; x++) 1261 uaa->info.autoQuirk[x] = udev->autoQuirk[x]; 1262} 1263 1264/*------------------------------------------------------------------------* 1265 * usb_probe_and_attach 1266 * 1267 * This function is called from "uhub_explore_sub()", 1268 * "usb_handle_set_config()" and "usb_handle_request()". 1269 * 1270 * Returns: 1271 * 0: Success 1272 * Else: A control transfer failed 1273 *------------------------------------------------------------------------*/ 1274usb_error_t 1275usb_probe_and_attach(struct usb_device *udev, uint8_t iface_index) 1276{ 1277 struct usb_attach_arg uaa; 1278 struct usb_interface *iface; 1279 uint8_t i; 1280 uint8_t j; 1281 uint8_t do_unlock; 1282 1283 if (udev == NULL) { 1284 DPRINTF("udev == NULL\n"); 1285 return (USB_ERR_INVAL); 1286 } 1287 /* automatic locking */ 1288 if (usbd_enum_is_locked(udev)) { 1289 do_unlock = 0; 1290 } else { 1291 do_unlock = 1; 1292 usbd_enum_lock(udev); 1293 } 1294 1295 if (udev->curr_config_index == USB_UNCONFIG_INDEX) { 1296 /* do nothing - no configuration has been set */ 1297 goto done; 1298 } 1299 /* setup USB attach arguments */ 1300 1301 usb_init_attach_arg(udev, &uaa); 1302 1303 /* 1304 * If the whole USB device is targeted, invoke the USB event 1305 * handler(s): 1306 */ 1307 if (iface_index == USB_IFACE_INDEX_ANY) { 1308 1309 EVENTHANDLER_INVOKE(usb_dev_configured, udev, &uaa); 1310 1311 if (uaa.dev_state != UAA_DEV_READY) { 1312 /* leave device unconfigured */ 1313 usb_unconfigure(udev, 0); 1314 goto done; 1315 } 1316 } 1317 1318 /* Check if only one interface should be probed: */ 1319 if (iface_index != USB_IFACE_INDEX_ANY) { 1320 i = iface_index; 1321 j = i + 1; 1322 } else { 1323 i = 0; 1324 j = USB_IFACE_MAX; 1325 } 1326 1327 /* Do the probe and attach */ 1328 for (; i != j; i++) { 1329 1330 iface = usbd_get_iface(udev, i); 1331 if (iface == NULL) { 1332 /* 1333 * Looks like the end of the USB 1334 * interfaces ! 1335 */ 1336 DPRINTFN(2, "end of interfaces " 1337 "at %u\n", i); 1338 break; 1339 } 1340 if (iface->idesc == NULL) { 1341 /* no interface descriptor */ 1342 continue; 1343 } 1344 uaa.iface = iface; 1345 1346 uaa.info.bInterfaceClass = 1347 iface->idesc->bInterfaceClass; 1348 uaa.info.bInterfaceSubClass = 1349 iface->idesc->bInterfaceSubClass; 1350 uaa.info.bInterfaceProtocol = 1351 iface->idesc->bInterfaceProtocol; 1352 uaa.info.bIfaceIndex = i; 1353 uaa.info.bIfaceNum = 1354 iface->idesc->bInterfaceNumber; 1355 uaa.driver_info = 0; /* reset driver_info */ 1356 1357 DPRINTFN(2, "iclass=%u/%u/%u iindex=%u/%u\n", 1358 uaa.info.bInterfaceClass, 1359 uaa.info.bInterfaceSubClass, 1360 uaa.info.bInterfaceProtocol, 1361 uaa.info.bIfaceIndex, 1362 uaa.info.bIfaceNum); 1363 1364 usb_probe_and_attach_sub(udev, &uaa); 1365 1366 /* 1367 * Remove the leftover child, if any, to enforce that 1368 * a new nomatch devd event is generated for the next 1369 * interface if no driver is found: 1370 */ 1371 if (uaa.temp_dev == NULL) 1372 continue; 1373 if (device_delete_child(udev->parent_dev, uaa.temp_dev)) 1374 DPRINTFN(0, "device delete child failed\n"); 1375 uaa.temp_dev = NULL; 1376 } 1377done: 1378 if (do_unlock) 1379 usbd_enum_unlock(udev); 1380 1381 return (0); 1382} 1383 1384/*------------------------------------------------------------------------* 1385 * usb_suspend_resume_sub 1386 * 1387 * This function is called when the suspend or resume methods should 1388 * be executed on an USB device. 1389 *------------------------------------------------------------------------*/ 1390static void 1391usb_suspend_resume_sub(struct usb_device *udev, device_t dev, uint8_t do_suspend) 1392{ 1393 int err; 1394 1395 if (dev == NULL) { 1396 return; 1397 } 1398 if (!device_is_attached(dev)) { 1399 return; 1400 } 1401 if (do_suspend) { 1402 err = DEVICE_SUSPEND(dev); 1403 } else { 1404 err = DEVICE_RESUME(dev); 1405 } 1406 if (err) { 1407 device_printf(dev, "%s failed\n", 1408 do_suspend ? "Suspend" : "Resume"); 1409 } 1410} 1411 1412/*------------------------------------------------------------------------* 1413 * usb_suspend_resume 1414 * 1415 * The following function will suspend or resume the USB device. 1416 * 1417 * Returns: 1418 * 0: Success 1419 * Else: Failure 1420 *------------------------------------------------------------------------*/ 1421usb_error_t 1422usb_suspend_resume(struct usb_device *udev, uint8_t do_suspend) 1423{ 1424 struct usb_interface *iface; 1425 uint8_t i; 1426 1427 if (udev == NULL) { 1428 /* nothing to do */ 1429 return (0); 1430 } 1431 DPRINTFN(4, "udev=%p do_suspend=%d\n", udev, do_suspend); 1432 1433 sx_assert(&udev->sr_sx, SA_LOCKED); 1434 1435 USB_BUS_LOCK(udev->bus); 1436 /* filter the suspend events */ 1437 if (udev->flags.peer_suspended == do_suspend) { 1438 USB_BUS_UNLOCK(udev->bus); 1439 /* nothing to do */ 1440 return (0); 1441 } 1442 udev->flags.peer_suspended = do_suspend; 1443 USB_BUS_UNLOCK(udev->bus); 1444 1445 /* do the suspend or resume */ 1446 1447 for (i = 0; i != USB_IFACE_MAX; i++) { 1448 1449 iface = usbd_get_iface(udev, i); 1450 if (iface == NULL) { 1451 /* looks like the end of the USB interfaces */ 1452 break; 1453 } 1454 usb_suspend_resume_sub(udev, iface->subdev, do_suspend); 1455 } 1456 return (0); 1457} 1458 1459/*------------------------------------------------------------------------* 1460 * usbd_clear_stall_proc 1461 * 1462 * This function performs generic USB clear stall operations. 1463 *------------------------------------------------------------------------*/ 1464static void 1465usbd_clear_stall_proc(struct usb_proc_msg *_pm) 1466{ 1467 struct usb_clear_stall_msg *pm = (void *)_pm; 1468 struct usb_device *udev = pm->udev; 1469 1470 /* Change lock */ 1471 USB_BUS_UNLOCK(udev->bus); 1472 mtx_lock(&udev->device_mtx); 1473 1474 /* Start clear stall callback */ 1475 usbd_transfer_start(udev->ctrl_xfer[1]); 1476 1477 /* Change lock */ 1478 mtx_unlock(&udev->device_mtx); 1479 USB_BUS_LOCK(udev->bus); 1480} 1481 1482/*------------------------------------------------------------------------* 1483 * usb_alloc_device 1484 * 1485 * This function allocates a new USB device. This function is called 1486 * when a new device has been put in the powered state, but not yet in 1487 * the addressed state. Get initial descriptor, set the address, get 1488 * full descriptor and get strings. 1489 * 1490 * Return values: 1491 * 0: Failure 1492 * Else: Success 1493 *------------------------------------------------------------------------*/ 1494struct usb_device * 1495usb_alloc_device(device_t parent_dev, struct usb_bus *bus, 1496 struct usb_device *parent_hub, uint8_t depth, uint8_t port_index, 1497 uint8_t port_no, enum usb_dev_speed speed, enum usb_hc_mode mode) 1498{ 1499 struct usb_attach_arg uaa; 1500 struct usb_device *udev; 1501 struct usb_device *adev; 1502 struct usb_device *hub; 1503 uint8_t *scratch_ptr; 1504 size_t scratch_size; 1505 usb_error_t err; 1506 uint8_t device_index; 1507 uint8_t config_index; 1508 uint8_t config_quirk; 1509 uint8_t set_config_failed; 1510 1511 DPRINTF("parent_dev=%p, bus=%p, parent_hub=%p, depth=%u, " 1512 "port_index=%u, port_no=%u, speed=%u, usb_mode=%u\n", 1513 parent_dev, bus, parent_hub, depth, port_index, port_no, 1514 speed, mode); 1515 1516 /* 1517 * Find an unused device index. In USB Host mode this is the 1518 * same as the device address. 1519 * 1520 * Device index zero is not used and device index 1 should 1521 * always be the root hub. 1522 */ 1523 for (device_index = USB_ROOT_HUB_ADDR; 1524 (device_index != bus->devices_max) && 1525 (bus->devices[device_index] != NULL); 1526 device_index++) /* nop */; 1527 1528 if (device_index == bus->devices_max) { 1529 device_printf(bus->bdev, 1530 "No free USB device index for new device\n"); 1531 return (NULL); 1532 } 1533 1534 if (depth > 0x10) { 1535 device_printf(bus->bdev, 1536 "Invalid device depth\n"); 1537 return (NULL); 1538 } 1539 udev = malloc(sizeof(*udev), M_USB, M_WAITOK | M_ZERO); 1540 if (udev == NULL) { 1541 return (NULL); 1542 } 1543 /* initialise our SX-lock */ 1544 sx_init_flags(&udev->ctrl_sx, "USB device SX lock", SX_DUPOK); 1545 1546 /* initialise our SX-lock */ 1547 sx_init_flags(&udev->enum_sx, "USB config SX lock", SX_DUPOK); 1548 sx_init_flags(&udev->sr_sx, "USB suspend and resume SX lock", SX_NOWITNESS); 1549 1550 cv_init(&udev->ctrlreq_cv, "WCTRL"); 1551 cv_init(&udev->ref_cv, "UGONE"); 1552 1553 /* initialise our mutex */ 1554 mtx_init(&udev->device_mtx, "USB device mutex", NULL, MTX_DEF); 1555 1556 /* initialise generic clear stall */ 1557 udev->cs_msg[0].hdr.pm_callback = &usbd_clear_stall_proc; 1558 udev->cs_msg[0].udev = udev; 1559 udev->cs_msg[1].hdr.pm_callback = &usbd_clear_stall_proc; 1560 udev->cs_msg[1].udev = udev; 1561 1562 /* initialise some USB device fields */ 1563 udev->parent_hub = parent_hub; 1564 udev->parent_dev = parent_dev; 1565 udev->port_index = port_index; 1566 udev->port_no = port_no; 1567 udev->depth = depth; 1568 udev->bus = bus; 1569 udev->address = USB_START_ADDR; /* default value */ 1570 udev->plugtime = (usb_ticks_t)ticks; 1571 /* 1572 * We need to force the power mode to "on" because there are plenty 1573 * of USB devices out there that do not work very well with 1574 * automatic suspend and resume! 1575 */ 1576 udev->power_mode = usbd_filter_power_mode(udev, USB_POWER_MODE_ON); 1577 udev->pwr_save.last_xfer_time = ticks; 1578 /* we are not ready yet */ 1579 udev->refcount = 1; 1580 1581 /* set up default endpoint descriptor */ 1582 udev->ctrl_ep_desc.bLength = sizeof(udev->ctrl_ep_desc); 1583 udev->ctrl_ep_desc.bDescriptorType = UDESC_ENDPOINT; 1584 udev->ctrl_ep_desc.bEndpointAddress = USB_CONTROL_ENDPOINT; 1585 udev->ctrl_ep_desc.bmAttributes = UE_CONTROL; 1586 udev->ctrl_ep_desc.wMaxPacketSize[0] = USB_MAX_IPACKET; 1587 udev->ctrl_ep_desc.wMaxPacketSize[1] = 0; 1588 udev->ctrl_ep_desc.bInterval = 0; 1589 1590 /* set up default endpoint companion descriptor */ 1591 udev->ctrl_ep_comp_desc.bLength = sizeof(udev->ctrl_ep_comp_desc); 1592 udev->ctrl_ep_comp_desc.bDescriptorType = UDESC_ENDPOINT_SS_COMP; 1593 1594 udev->ddesc.bMaxPacketSize = USB_MAX_IPACKET; 1595 1596 udev->speed = speed; 1597 udev->flags.usb_mode = mode; 1598 1599 /* search for our High Speed USB HUB, if any */ 1600 1601 adev = udev; 1602 hub = udev->parent_hub; 1603 1604 while (hub) { 1605 if (hub->speed == USB_SPEED_HIGH) { 1606 udev->hs_hub_addr = hub->address; 1607 udev->parent_hs_hub = hub; 1608 udev->hs_port_no = adev->port_no; 1609 break; 1610 } 1611 adev = hub; 1612 hub = hub->parent_hub; 1613 } 1614 1615 /* init the default endpoint */ 1616 usb_init_endpoint(udev, 0, 1617 &udev->ctrl_ep_desc, 1618 &udev->ctrl_ep_comp_desc, 1619 &udev->ctrl_ep); 1620 1621 /* set device index */ 1622 udev->device_index = device_index; 1623 1624#if USB_HAVE_UGEN 1625 /* Create ugen name */ 1626 snprintf(udev->ugen_name, sizeof(udev->ugen_name), 1627 USB_GENERIC_NAME "%u.%u", device_get_unit(bus->bdev), 1628 device_index); 1629 LIST_INIT(&udev->pd_list); 1630 1631 /* Create the control endpoint device */ 1632 udev->ctrl_dev = usb_make_dev(udev, NULL, 0, 0, 1633 FREAD|FWRITE, UID_ROOT, GID_OPERATOR, 0600); 1634 1635 /* Create a link from /dev/ugenX.X to the default endpoint */ 1636 if (udev->ctrl_dev != NULL) 1637 make_dev_alias(udev->ctrl_dev->cdev, "%s", udev->ugen_name); 1638#endif 1639 /* Initialise device */ 1640 if (bus->methods->device_init != NULL) { 1641 err = (bus->methods->device_init) (udev); 1642 if (err != 0) { 1643 DPRINTFN(0, "device init %d failed " 1644 "(%s, ignored)\n", device_index, 1645 usbd_errstr(err)); 1646 goto done; 1647 } 1648 } 1649 /* set powered device state after device init is complete */ 1650 usb_set_device_state(udev, USB_STATE_POWERED); 1651 1652 if (udev->flags.usb_mode == USB_MODE_HOST) { 1653 1654 err = usbd_req_set_address(udev, NULL, device_index); 1655 1656 /* 1657 * This is the new USB device address from now on, if 1658 * the set address request didn't set it already. 1659 */ 1660 if (udev->address == USB_START_ADDR) 1661 udev->address = device_index; 1662 1663 /* 1664 * We ignore any set-address errors, hence there are 1665 * buggy USB devices out there that actually receive 1666 * the SETUP PID, but manage to set the address before 1667 * the STATUS stage is ACK'ed. If the device responds 1668 * to the subsequent get-descriptor at the new 1669 * address, then we know that the set-address command 1670 * was successful. 1671 */ 1672 if (err) { 1673 DPRINTFN(0, "set address %d failed " 1674 "(%s, ignored)\n", udev->address, 1675 usbd_errstr(err)); 1676 } 1677 } else { 1678 /* We are not self powered */ 1679 udev->flags.self_powered = 0; 1680 1681 /* Set unconfigured state */ 1682 udev->curr_config_no = USB_UNCONFIG_NO; 1683 udev->curr_config_index = USB_UNCONFIG_INDEX; 1684 1685 /* Setup USB descriptors */ 1686 err = (usb_temp_setup_by_index_p) (udev, usb_template); 1687 if (err) { 1688 DPRINTFN(0, "setting up USB template failed maybe the USB " 1689 "template module has not been loaded\n"); 1690 goto done; 1691 } 1692 } 1693 usb_set_device_state(udev, USB_STATE_ADDRESSED); 1694 1695 /* setup the device descriptor and the initial "wMaxPacketSize" */ 1696 err = usbd_setup_device_desc(udev, NULL); 1697 1698 if (err != 0) { 1699 /* XXX try to re-enumerate the device */ 1700 err = usbd_req_re_enumerate(udev, NULL); 1701 if (err) 1702 goto done; 1703 } 1704 1705 /* 1706 * Setup temporary USB attach args so that we can figure out some 1707 * basic quirks for this device. 1708 */ 1709 usb_init_attach_arg(udev, &uaa); 1710 1711 if (usb_test_quirk(&uaa, UQ_BUS_POWERED)) { 1712 udev->flags.uq_bus_powered = 1; 1713 } 1714 if (usb_test_quirk(&uaa, UQ_NO_STRINGS)) { 1715 udev->flags.no_strings = 1; 1716 } 1717 /* 1718 * Workaround for buggy USB devices. 1719 * 1720 * It appears that some string-less USB chips will crash and 1721 * disappear if any attempts are made to read any string 1722 * descriptors. 1723 * 1724 * Try to detect such chips by checking the strings in the USB 1725 * device descriptor. If no strings are present there we 1726 * simply disable all USB strings. 1727 */ 1728 scratch_ptr = udev->bus->scratch[0].data; 1729 scratch_size = sizeof(udev->bus->scratch[0].data); 1730 1731 if (udev->ddesc.iManufacturer || 1732 udev->ddesc.iProduct || 1733 udev->ddesc.iSerialNumber) { 1734 /* read out the language ID string */ 1735 err = usbd_req_get_string_desc(udev, NULL, 1736 (char *)scratch_ptr, 4, 0, USB_LANGUAGE_TABLE); 1737 } else { 1738 err = USB_ERR_INVAL; 1739 } 1740 1741 if (err || (scratch_ptr[0] < 4)) { 1742 udev->flags.no_strings = 1; 1743 } else { 1744 uint16_t langid; 1745 uint16_t pref; 1746 uint16_t mask; 1747 uint8_t x; 1748 1749 /* load preferred value and mask */ 1750 pref = usb_lang_id; 1751 mask = usb_lang_mask; 1752 1753 /* align length correctly */ 1754 scratch_ptr[0] &= ~1; 1755 1756 /* fix compiler warning */ 1757 langid = 0; 1758 1759 /* search for preferred language */ 1760 for (x = 2; (x < scratch_ptr[0]); x += 2) { 1761 langid = UGETW(scratch_ptr + x); 1762 if ((langid & mask) == pref) 1763 break; 1764 } 1765 if (x >= scratch_ptr[0]) { 1766 /* pick the first language as the default */ 1767 DPRINTFN(1, "Using first language\n"); 1768 langid = UGETW(scratch_ptr + 2); 1769 } 1770 1771 DPRINTFN(1, "Language selected: 0x%04x\n", langid); 1772 udev->langid = langid; 1773 } 1774 1775 /* assume 100mA bus powered for now. Changed when configured. */ 1776 udev->power = USB_MIN_POWER; 1777 /* fetch the vendor and product strings from the device */ 1778 usbd_set_device_strings(udev); 1779 1780 if (udev->flags.usb_mode == USB_MODE_DEVICE) { 1781 /* USB device mode setup is complete */ 1782 err = 0; 1783 goto config_done; 1784 } 1785 1786 /* 1787 * Most USB devices should attach to config index 0 by 1788 * default 1789 */ 1790 if (usb_test_quirk(&uaa, UQ_CFG_INDEX_0)) { 1791 config_index = 0; 1792 config_quirk = 1; 1793 } else if (usb_test_quirk(&uaa, UQ_CFG_INDEX_1)) { 1794 config_index = 1; 1795 config_quirk = 1; 1796 } else if (usb_test_quirk(&uaa, UQ_CFG_INDEX_2)) { 1797 config_index = 2; 1798 config_quirk = 1; 1799 } else if (usb_test_quirk(&uaa, UQ_CFG_INDEX_3)) { 1800 config_index = 3; 1801 config_quirk = 1; 1802 } else if (usb_test_quirk(&uaa, UQ_CFG_INDEX_4)) { 1803 config_index = 4; 1804 config_quirk = 1; 1805 } else { 1806 config_index = 0; 1807 config_quirk = 0; 1808 } 1809 1810 set_config_failed = 0; 1811repeat_set_config: 1812 1813 DPRINTF("setting config %u\n", config_index); 1814 1815 /* get the USB device configured */ 1816 err = usbd_set_config_index(udev, config_index); 1817 if (err) { 1818 if (udev->ddesc.bNumConfigurations != 0) { 1819 if (!set_config_failed) { 1820 set_config_failed = 1; 1821 /* XXX try to re-enumerate the device */ 1822 err = usbd_req_re_enumerate(udev, NULL); 1823 if (err == 0) 1824 goto repeat_set_config; 1825 } 1826 DPRINTFN(0, "Failure selecting configuration index %u:" 1827 "%s, port %u, addr %u (ignored)\n", 1828 config_index, usbd_errstr(err), udev->port_no, 1829 udev->address); 1830 } 1831 /* 1832 * Some USB devices do not have any configurations. Ignore any 1833 * set config failures! 1834 */ 1835 err = 0; 1836 goto config_done; 1837 } 1838 if (!config_quirk && config_index + 1 < udev->ddesc.bNumConfigurations) { 1839 if ((udev->cdesc->bNumInterface < 2) && 1840 usbd_get_no_descriptors(udev->cdesc, UDESC_ENDPOINT) == 0) { 1841 DPRINTFN(0, "Found no endpoints, trying next config\n"); 1842 config_index++; 1843 goto repeat_set_config; 1844 } 1845 if (config_index == 0) { 1846 /* 1847 * Try to figure out if we have an 1848 * auto-install disk there: 1849 */ 1850 if (usb_iface_is_cdrom(udev, 0)) { 1851 DPRINTFN(0, "Found possible auto-install " 1852 "disk (trying next config)\n"); 1853 config_index++; 1854 goto repeat_set_config; 1855 } 1856 } 1857 } 1858 if (set_config_failed == 0 && config_index == 0 && 1859 usb_test_quirk(&uaa, UQ_MSC_NO_SYNC_CACHE) == 0) { 1860 1861 /* 1862 * Try to figure out if there are any MSC quirks we 1863 * should apply automatically: 1864 */ 1865 err = usb_msc_auto_quirk(udev, 0); 1866 1867 if (err != 0) { 1868 set_config_failed = 1; 1869 goto repeat_set_config; 1870 } 1871 } 1872 1873config_done: 1874 DPRINTF("new dev (addr %d), udev=%p, parent_hub=%p\n", 1875 udev->address, udev, udev->parent_hub); 1876 1877 /* register our device - we are ready */ 1878 usb_bus_port_set_device(bus, parent_hub ? 1879 parent_hub->hub->ports + port_index : NULL, udev, device_index); 1880 1881#if USB_HAVE_UGEN 1882 /* Symlink the ugen device name */ 1883 udev->ugen_symlink = usb_alloc_symlink(udev->ugen_name); 1884 1885 /* Announce device */ 1886 printf("%s: <%s> at %s\n", udev->ugen_name, 1887 usb_get_manufacturer(udev), 1888 device_get_nameunit(udev->bus->bdev)); 1889#endif 1890 1891#if USB_HAVE_DEVCTL 1892 usb_notify_addq("ATTACH", udev); 1893#endif 1894done: 1895 if (err) { 1896 /* 1897 * Free USB device and all subdevices, if any. 1898 */ 1899 usb_free_device(udev, 0); 1900 udev = NULL; 1901 } 1902 return (udev); 1903} 1904 1905#if USB_HAVE_UGEN 1906struct usb_fs_privdata * 1907usb_make_dev(struct usb_device *udev, const char *devname, int ep, 1908 int fi, int rwmode, uid_t uid, gid_t gid, int mode) 1909{ 1910 struct usb_fs_privdata* pd; 1911 char buffer[32]; 1912 1913 /* Store information to locate ourselves again later */ 1914 pd = malloc(sizeof(struct usb_fs_privdata), M_USBDEV, 1915 M_WAITOK | M_ZERO); 1916 pd->bus_index = device_get_unit(udev->bus->bdev); 1917 pd->dev_index = udev->device_index; 1918 pd->ep_addr = ep; 1919 pd->fifo_index = fi; 1920 pd->mode = rwmode; 1921 1922 /* Now, create the device itself */ 1923 if (devname == NULL) { 1924 devname = buffer; 1925 snprintf(buffer, sizeof(buffer), USB_DEVICE_DIR "/%u.%u.%u", 1926 pd->bus_index, pd->dev_index, pd->ep_addr); 1927 } 1928 1929 pd->cdev = make_dev(&usb_devsw, 0, uid, gid, mode, "%s", devname); 1930 1931 if (pd->cdev == NULL) { 1932 DPRINTFN(0, "Failed to create device %s\n", devname); 1933 free(pd, M_USBDEV); 1934 return (NULL); 1935 } 1936 1937 /* XXX setting si_drv1 and creating the device is not atomic! */ 1938 pd->cdev->si_drv1 = pd; 1939 1940 return (pd); 1941} 1942 1943void 1944usb_destroy_dev(struct usb_fs_privdata *pd) 1945{ 1946 if (pd == NULL) 1947 return; 1948 1949 destroy_dev(pd->cdev); 1950 1951 free(pd, M_USBDEV); 1952} 1953 1954static void 1955usb_cdev_create(struct usb_device *udev) 1956{ 1957 struct usb_config_descriptor *cd; 1958 struct usb_endpoint_descriptor *ed; 1959 struct usb_descriptor *desc; 1960 struct usb_fs_privdata* pd; 1961 int inmode, outmode, inmask, outmask, mode; 1962 uint8_t ep; 1963 1964 KASSERT(LIST_FIRST(&udev->pd_list) == NULL, ("stale cdev entries")); 1965 1966 DPRINTFN(2, "Creating device nodes\n"); 1967 1968 if (usbd_get_mode(udev) == USB_MODE_DEVICE) { 1969 inmode = FWRITE; 1970 outmode = FREAD; 1971 } else { /* USB_MODE_HOST */ 1972 inmode = FREAD; 1973 outmode = FWRITE; 1974 } 1975 1976 inmask = 0; 1977 outmask = 0; 1978 desc = NULL; 1979 1980 /* 1981 * Collect all used endpoint numbers instead of just 1982 * generating 16 static endpoints. 1983 */ 1984 cd = usbd_get_config_descriptor(udev); 1985 while ((desc = usb_desc_foreach(cd, desc))) { 1986 /* filter out all endpoint descriptors */ 1987 if ((desc->bDescriptorType == UDESC_ENDPOINT) && 1988 (desc->bLength >= sizeof(*ed))) { 1989 ed = (struct usb_endpoint_descriptor *)desc; 1990 1991 /* update masks */ 1992 ep = ed->bEndpointAddress; 1993 if (UE_GET_DIR(ep) == UE_DIR_OUT) 1994 outmask |= 1 << UE_GET_ADDR(ep); 1995 else 1996 inmask |= 1 << UE_GET_ADDR(ep); 1997 } 1998 } 1999 2000 /* Create all available endpoints except EP0 */ 2001 for (ep = 1; ep < 16; ep++) { 2002 mode = (inmask & (1 << ep)) ? inmode : 0; 2003 mode |= (outmask & (1 << ep)) ? outmode : 0; 2004 if (mode == 0) 2005 continue; /* no IN or OUT endpoint */ 2006 2007 pd = usb_make_dev(udev, NULL, ep, 0, 2008 mode, UID_ROOT, GID_OPERATOR, 0600); 2009 2010 if (pd != NULL) 2011 LIST_INSERT_HEAD(&udev->pd_list, pd, pd_next); 2012 } 2013} 2014 2015static void 2016usb_cdev_free(struct usb_device *udev) 2017{ 2018 struct usb_fs_privdata* pd; 2019 2020 DPRINTFN(2, "Freeing device nodes\n"); 2021 2022 while ((pd = LIST_FIRST(&udev->pd_list)) != NULL) { 2023 KASSERT(pd->cdev->si_drv1 == pd, ("privdata corrupt")); 2024 2025 LIST_REMOVE(pd, pd_next); 2026 2027 usb_destroy_dev(pd); 2028 } 2029} 2030#endif 2031 2032/*------------------------------------------------------------------------* 2033 * usb_free_device 2034 * 2035 * This function is NULL safe and will free an USB device and its 2036 * children devices, if any. 2037 * 2038 * Flag values: Reserved, set to zero. 2039 *------------------------------------------------------------------------*/ 2040void 2041usb_free_device(struct usb_device *udev, uint8_t flag) 2042{ 2043 struct usb_bus *bus; 2044 2045 if (udev == NULL) 2046 return; /* already freed */ 2047 2048 DPRINTFN(4, "udev=%p port=%d\n", udev, udev->port_no); 2049 2050 bus = udev->bus; 2051 usb_set_device_state(udev, USB_STATE_DETACHED); 2052 2053#if USB_HAVE_DEVCTL 2054 usb_notify_addq("DETACH", udev); 2055#endif 2056 2057#if USB_HAVE_UGEN 2058 printf("%s: <%s> at %s (disconnected)\n", udev->ugen_name, 2059 usb_get_manufacturer(udev), device_get_nameunit(bus->bdev)); 2060 2061 /* Destroy UGEN symlink, if any */ 2062 if (udev->ugen_symlink) { 2063 usb_free_symlink(udev->ugen_symlink); 2064 udev->ugen_symlink = NULL; 2065 } 2066#endif 2067 /* 2068 * Unregister our device first which will prevent any further 2069 * references: 2070 */ 2071 usb_bus_port_set_device(bus, udev->parent_hub ? 2072 udev->parent_hub->hub->ports + udev->port_index : NULL, 2073 NULL, USB_ROOT_HUB_ADDR); 2074 2075#if USB_HAVE_UGEN 2076 /* wait for all pending references to go away: */ 2077 mtx_lock(&usb_ref_lock); 2078 udev->refcount--; 2079 while (udev->refcount != 0) { 2080 cv_wait(&udev->ref_cv, &usb_ref_lock); 2081 } 2082 mtx_unlock(&usb_ref_lock); 2083 2084 usb_destroy_dev(udev->ctrl_dev); 2085#endif 2086 2087 if (udev->flags.usb_mode == USB_MODE_DEVICE) { 2088 /* stop receiving any control transfers (Device Side Mode) */ 2089 usbd_transfer_unsetup(udev->ctrl_xfer, USB_CTRL_XFER_MAX); 2090 } 2091 2092 /* the following will get the device unconfigured in software */ 2093 usb_unconfigure(udev, USB_UNCFG_FLAG_FREE_EP0); 2094 2095 /* unsetup any leftover default USB transfers */ 2096 usbd_transfer_unsetup(udev->ctrl_xfer, USB_CTRL_XFER_MAX); 2097 2098 /* template unsetup, if any */ 2099 (usb_temp_unsetup_p) (udev); 2100 2101 /* 2102 * Make sure that our clear-stall messages are not queued 2103 * anywhere: 2104 */ 2105 USB_BUS_LOCK(udev->bus); 2106 usb_proc_mwait(&udev->bus->non_giant_callback_proc, 2107 &udev->cs_msg[0], &udev->cs_msg[1]); 2108 USB_BUS_UNLOCK(udev->bus); 2109 2110 sx_destroy(&udev->ctrl_sx); 2111 sx_destroy(&udev->enum_sx); 2112 sx_destroy(&udev->sr_sx); 2113 2114 cv_destroy(&udev->ctrlreq_cv); 2115 cv_destroy(&udev->ref_cv); 2116 2117 mtx_destroy(&udev->device_mtx); 2118#if USB_HAVE_UGEN 2119 KASSERT(LIST_FIRST(&udev->pd_list) == NULL, ("leaked cdev entries")); 2120#endif 2121 2122 /* Uninitialise device */ 2123 if (bus->methods->device_uninit != NULL) 2124 (bus->methods->device_uninit) (udev); 2125 2126 /* free device */ 2127 free(udev->serial, M_USB); 2128 free(udev->manufacturer, M_USB); 2129 free(udev->product, M_USB); 2130 free(udev, M_USB); 2131} 2132 2133/*------------------------------------------------------------------------* 2134 * usbd_get_iface 2135 * 2136 * This function is the safe way to get the USB interface structure 2137 * pointer by interface index. 2138 * 2139 * Return values: 2140 * NULL: Interface not present. 2141 * Else: Pointer to USB interface structure. 2142 *------------------------------------------------------------------------*/ 2143struct usb_interface * 2144usbd_get_iface(struct usb_device *udev, uint8_t iface_index) 2145{ 2146 struct usb_interface *iface = udev->ifaces + iface_index; 2147 2148 if (iface_index >= udev->ifaces_max) 2149 return (NULL); 2150 return (iface); 2151} 2152 2153/*------------------------------------------------------------------------* 2154 * usbd_find_descriptor 2155 * 2156 * This function will lookup the first descriptor that matches the 2157 * criteria given by the arguments "type" and "subtype". Descriptors 2158 * will only be searched within the interface having the index 2159 * "iface_index". If the "id" argument points to an USB descriptor, 2160 * it will be skipped before the search is started. This allows 2161 * searching for multiple descriptors using the same criteria. Else 2162 * the search is started after the interface descriptor. 2163 * 2164 * Return values: 2165 * NULL: End of descriptors 2166 * Else: A descriptor matching the criteria 2167 *------------------------------------------------------------------------*/ 2168void * 2169usbd_find_descriptor(struct usb_device *udev, void *id, uint8_t iface_index, 2170 uint8_t type, uint8_t type_mask, 2171 uint8_t subtype, uint8_t subtype_mask) 2172{ 2173 struct usb_descriptor *desc; 2174 struct usb_config_descriptor *cd; 2175 struct usb_interface *iface; 2176 2177 cd = usbd_get_config_descriptor(udev); 2178 if (cd == NULL) { 2179 return (NULL); 2180 } 2181 if (id == NULL) { 2182 iface = usbd_get_iface(udev, iface_index); 2183 if (iface == NULL) { 2184 return (NULL); 2185 } 2186 id = usbd_get_interface_descriptor(iface); 2187 if (id == NULL) { 2188 return (NULL); 2189 } 2190 } 2191 desc = (void *)id; 2192 2193 while ((desc = usb_desc_foreach(cd, desc))) { 2194 2195 if (desc->bDescriptorType == UDESC_INTERFACE) { 2196 break; 2197 } 2198 if (((desc->bDescriptorType & type_mask) == type) && 2199 ((desc->bDescriptorSubtype & subtype_mask) == subtype)) { 2200 return (desc); 2201 } 2202 } 2203 return (NULL); 2204} 2205 2206/*------------------------------------------------------------------------* 2207 * usb_devinfo 2208 * 2209 * This function will dump information from the device descriptor 2210 * belonging to the USB device pointed to by "udev", to the string 2211 * pointed to by "dst_ptr" having a maximum length of "dst_len" bytes 2212 * including the terminating zero. 2213 *------------------------------------------------------------------------*/ 2214void 2215usb_devinfo(struct usb_device *udev, char *dst_ptr, uint16_t dst_len) 2216{ 2217 struct usb_device_descriptor *udd = &udev->ddesc; 2218 uint16_t bcdDevice; 2219 uint16_t bcdUSB; 2220 2221 bcdUSB = UGETW(udd->bcdUSB); 2222 bcdDevice = UGETW(udd->bcdDevice); 2223 2224 if (udd->bDeviceClass != 0xFF) { 2225 snprintf(dst_ptr, dst_len, "%s %s, class %d/%d, rev %x.%02x/" 2226 "%x.%02x, addr %d", 2227 usb_get_manufacturer(udev), 2228 usb_get_product(udev), 2229 udd->bDeviceClass, udd->bDeviceSubClass, 2230 (bcdUSB >> 8), bcdUSB & 0xFF, 2231 (bcdDevice >> 8), bcdDevice & 0xFF, 2232 udev->address); 2233 } else { 2234 snprintf(dst_ptr, dst_len, "%s %s, rev %x.%02x/" 2235 "%x.%02x, addr %d", 2236 usb_get_manufacturer(udev), 2237 usb_get_product(udev), 2238 (bcdUSB >> 8), bcdUSB & 0xFF, 2239 (bcdDevice >> 8), bcdDevice & 0xFF, 2240 udev->address); 2241 } 2242} 2243 2244#ifdef USB_VERBOSE 2245/* 2246 * Descriptions of of known vendors and devices ("products"). 2247 */ 2248struct usb_knowndev { 2249 uint16_t vendor; 2250 uint16_t product; 2251 uint32_t flags; 2252 const char *vendorname; 2253 const char *productname; 2254}; 2255 2256#define USB_KNOWNDEV_NOPROD 0x01 /* match on vendor only */ 2257 2258#include "usbdevs.h" 2259#include "usbdevs_data.h" 2260#endif /* USB_VERBOSE */ 2261 2262static void 2263usbd_set_device_strings(struct usb_device *udev) 2264{ 2265 struct usb_device_descriptor *udd = &udev->ddesc; 2266#ifdef USB_VERBOSE 2267 const struct usb_knowndev *kdp; 2268#endif 2269 char *temp_ptr; 2270 size_t temp_size; 2271 uint16_t vendor_id; 2272 uint16_t product_id; 2273 2274 temp_ptr = (char *)udev->bus->scratch[0].data; 2275 temp_size = sizeof(udev->bus->scratch[0].data); 2276 2277 vendor_id = UGETW(udd->idVendor); 2278 product_id = UGETW(udd->idProduct); 2279 2280 /* get serial number string */ 2281 usbd_req_get_string_any(udev, NULL, temp_ptr, temp_size, 2282 udev->ddesc.iSerialNumber); 2283 udev->serial = strdup(temp_ptr, M_USB); 2284 2285 /* get manufacturer string */ 2286 usbd_req_get_string_any(udev, NULL, temp_ptr, temp_size, 2287 udev->ddesc.iManufacturer); 2288 usb_trim_spaces(temp_ptr); 2289 if (temp_ptr[0] != '\0') 2290 udev->manufacturer = strdup(temp_ptr, M_USB); 2291 2292 /* get product string */ 2293 usbd_req_get_string_any(udev, NULL, temp_ptr, temp_size, 2294 udev->ddesc.iProduct); 2295 usb_trim_spaces(temp_ptr); 2296 if (temp_ptr[0] != '\0') 2297 udev->product = strdup(temp_ptr, M_USB); 2298 2299#ifdef USB_VERBOSE 2300 if (udev->manufacturer == NULL || udev->product == NULL) { 2301 for (kdp = usb_knowndevs; kdp->vendorname != NULL; kdp++) { 2302 if (kdp->vendor == vendor_id && 2303 (kdp->product == product_id || 2304 (kdp->flags & USB_KNOWNDEV_NOPROD) != 0)) 2305 break; 2306 } 2307 if (kdp->vendorname != NULL) { 2308 /* XXX should use pointer to knowndevs string */ 2309 if (udev->manufacturer == NULL) { 2310 udev->manufacturer = strdup(kdp->vendorname, 2311 M_USB); 2312 } 2313 if (udev->product == NULL && 2314 (kdp->flags & USB_KNOWNDEV_NOPROD) == 0) { 2315 udev->product = strdup(kdp->productname, 2316 M_USB); 2317 } 2318 } 2319 } 2320#endif 2321 /* Provide default strings if none were found */ 2322 if (udev->manufacturer == NULL) { 2323 snprintf(temp_ptr, temp_size, "vendor 0x%04x", vendor_id); 2324 udev->manufacturer = strdup(temp_ptr, M_USB); 2325 } 2326 if (udev->product == NULL) { 2327 snprintf(temp_ptr, temp_size, "product 0x%04x", product_id); 2328 udev->product = strdup(temp_ptr, M_USB); 2329 } 2330} 2331 2332/* 2333 * Returns: 2334 * See: USB_MODE_XXX 2335 */ 2336enum usb_hc_mode 2337usbd_get_mode(struct usb_device *udev) 2338{ 2339 return (udev->flags.usb_mode); 2340} 2341 2342/* 2343 * Returns: 2344 * See: USB_SPEED_XXX 2345 */ 2346enum usb_dev_speed 2347usbd_get_speed(struct usb_device *udev) 2348{ 2349 return (udev->speed); 2350} 2351 2352uint32_t 2353usbd_get_isoc_fps(struct usb_device *udev) 2354{ 2355 ; /* indent fix */ 2356 switch (udev->speed) { 2357 case USB_SPEED_LOW: 2358 case USB_SPEED_FULL: 2359 return (1000); 2360 default: 2361 return (8000); 2362 } 2363} 2364 2365struct usb_device_descriptor * 2366usbd_get_device_descriptor(struct usb_device *udev) 2367{ 2368 if (udev == NULL) 2369 return (NULL); /* be NULL safe */ 2370 return (&udev->ddesc); 2371} 2372 2373struct usb_config_descriptor * 2374usbd_get_config_descriptor(struct usb_device *udev) 2375{ 2376 if (udev == NULL) 2377 return (NULL); /* be NULL safe */ 2378 return (udev->cdesc); 2379} 2380 2381/*------------------------------------------------------------------------* 2382 * usb_test_quirk - test a device for a given quirk 2383 * 2384 * Return values: 2385 * 0: The USB device does not have the given quirk. 2386 * Else: The USB device has the given quirk. 2387 *------------------------------------------------------------------------*/ 2388uint8_t 2389usb_test_quirk(const struct usb_attach_arg *uaa, uint16_t quirk) 2390{ 2391 uint8_t found; 2392 2393 found = (usb_test_quirk_p) (&uaa->info, quirk); 2394 return (found); 2395} 2396 2397struct usb_interface_descriptor * 2398usbd_get_interface_descriptor(struct usb_interface *iface) 2399{ 2400 if (iface == NULL) 2401 return (NULL); /* be NULL safe */ 2402 return (iface->idesc); 2403} 2404 2405uint8_t 2406usbd_get_interface_altindex(struct usb_interface *iface) 2407{ 2408 return (iface->alt_index); 2409} 2410 2411uint8_t 2412usbd_get_bus_index(struct usb_device *udev) 2413{ 2414 return ((uint8_t)device_get_unit(udev->bus->bdev)); 2415} 2416 2417uint8_t 2418usbd_get_device_index(struct usb_device *udev) 2419{ 2420 return (udev->device_index); 2421} 2422 2423#if USB_HAVE_DEVCTL 2424static void 2425usb_notify_addq(const char *type, struct usb_device *udev) 2426{ 2427 struct usb_interface *iface; 2428 struct sbuf *sb; 2429 int i; 2430 2431 /* announce the device */ 2432 sb = sbuf_new_auto(); 2433 sbuf_printf(sb, 2434#if USB_HAVE_UGEN 2435 "ugen=%s " 2436 "cdev=%s " 2437#endif 2438 "vendor=0x%04x " 2439 "product=0x%04x " 2440 "devclass=0x%02x " 2441 "devsubclass=0x%02x " 2442 "sernum=\"%s\" " 2443 "release=0x%04x " 2444 "mode=%s " 2445 "port=%u " 2446#if USB_HAVE_UGEN 2447 "parent=%s" 2448#endif 2449 "", 2450#if USB_HAVE_UGEN 2451 udev->ugen_name, 2452 udev->ugen_name, 2453#endif 2454 UGETW(udev->ddesc.idVendor), 2455 UGETW(udev->ddesc.idProduct), 2456 udev->ddesc.bDeviceClass, 2457 udev->ddesc.bDeviceSubClass, 2458 usb_get_serial(udev), 2459 UGETW(udev->ddesc.bcdDevice), 2460 (udev->flags.usb_mode == USB_MODE_HOST) ? "host" : "device", 2461 udev->port_no 2462#if USB_HAVE_UGEN 2463 , udev->parent_hub != NULL ? 2464 udev->parent_hub->ugen_name : 2465 device_get_nameunit(device_get_parent(udev->bus->bdev)) 2466#endif 2467 ); 2468 sbuf_finish(sb); 2469 devctl_notify("USB", "DEVICE", type, sbuf_data(sb)); 2470 sbuf_delete(sb); 2471 2472 /* announce each interface */ 2473 for (i = 0; i < USB_IFACE_MAX; i++) { 2474 iface = usbd_get_iface(udev, i); 2475 if (iface == NULL) 2476 break; /* end of interfaces */ 2477 if (iface->idesc == NULL) 2478 continue; /* no interface descriptor */ 2479 2480 sb = sbuf_new_auto(); 2481 sbuf_printf(sb, 2482#if USB_HAVE_UGEN 2483 "ugen=%s " 2484 "cdev=%s " 2485#endif 2486 "vendor=0x%04x " 2487 "product=0x%04x " 2488 "devclass=0x%02x " 2489 "devsubclass=0x%02x " 2490 "sernum=\"%s\" " 2491 "release=0x%04x " 2492 "mode=%s " 2493 "interface=%d " 2494 "endpoints=%d " 2495 "intclass=0x%02x " 2496 "intsubclass=0x%02x " 2497 "intprotocol=0x%02x", 2498#if USB_HAVE_UGEN 2499 udev->ugen_name, 2500 udev->ugen_name, 2501#endif 2502 UGETW(udev->ddesc.idVendor), 2503 UGETW(udev->ddesc.idProduct), 2504 udev->ddesc.bDeviceClass, 2505 udev->ddesc.bDeviceSubClass, 2506 usb_get_serial(udev), 2507 UGETW(udev->ddesc.bcdDevice), 2508 (udev->flags.usb_mode == USB_MODE_HOST) ? "host" : "device", 2509 iface->idesc->bInterfaceNumber, 2510 iface->idesc->bNumEndpoints, 2511 iface->idesc->bInterfaceClass, 2512 iface->idesc->bInterfaceSubClass, 2513 iface->idesc->bInterfaceProtocol); 2514 sbuf_finish(sb); 2515 devctl_notify("USB", "INTERFACE", type, sbuf_data(sb)); 2516 sbuf_delete(sb); 2517 } 2518} 2519#endif 2520 2521#if USB_HAVE_UGEN 2522/*------------------------------------------------------------------------* 2523 * usb_fifo_free_wrap 2524 * 2525 * This function will free the FIFOs. 2526 * 2527 * Description of "flag" argument: If the USB_UNCFG_FLAG_FREE_EP0 flag 2528 * is set and "iface_index" is set to "USB_IFACE_INDEX_ANY", we free 2529 * all FIFOs. If the USB_UNCFG_FLAG_FREE_EP0 flag is not set and 2530 * "iface_index" is set to "USB_IFACE_INDEX_ANY", we free all non 2531 * control endpoint FIFOs. If "iface_index" is not set to 2532 * "USB_IFACE_INDEX_ANY" the flag has no effect. 2533 *------------------------------------------------------------------------*/ 2534static void 2535usb_fifo_free_wrap(struct usb_device *udev, 2536 uint8_t iface_index, uint8_t flag) 2537{ 2538 struct usb_fifo *f; 2539 uint16_t i; 2540 2541 /* 2542 * Free any USB FIFOs on the given interface: 2543 */ 2544 for (i = 0; i != USB_FIFO_MAX; i++) { 2545 f = udev->fifo[i]; 2546 if (f == NULL) { 2547 continue; 2548 } 2549 /* Check if the interface index matches */ 2550 if (iface_index == f->iface_index) { 2551 if (f->methods != &usb_ugen_methods) { 2552 /* 2553 * Don't free any non-generic FIFOs in 2554 * this case. 2555 */ 2556 continue; 2557 } 2558 if ((f->dev_ep_index == 0) && 2559 (f->fs_xfer == NULL)) { 2560 /* no need to free this FIFO */ 2561 continue; 2562 } 2563 } else if (iface_index == USB_IFACE_INDEX_ANY) { 2564 if ((f->methods == &usb_ugen_methods) && 2565 (f->dev_ep_index == 0) && 2566 (!(flag & USB_UNCFG_FLAG_FREE_EP0)) && 2567 (f->fs_xfer == NULL)) { 2568 /* no need to free this FIFO */ 2569 continue; 2570 } 2571 } else { 2572 /* no need to free this FIFO */ 2573 continue; 2574 } 2575 /* free this FIFO */ 2576 usb_fifo_free(f); 2577 } 2578} 2579#endif 2580 2581/*------------------------------------------------------------------------* 2582 * usb_peer_can_wakeup 2583 * 2584 * Return values: 2585 * 0: Peer cannot do resume signalling. 2586 * Else: Peer can do resume signalling. 2587 *------------------------------------------------------------------------*/ 2588uint8_t 2589usb_peer_can_wakeup(struct usb_device *udev) 2590{ 2591 const struct usb_config_descriptor *cdp; 2592 2593 cdp = udev->cdesc; 2594 if ((cdp != NULL) && (udev->flags.usb_mode == USB_MODE_HOST)) { 2595 return (cdp->bmAttributes & UC_REMOTE_WAKEUP); 2596 } 2597 return (0); /* not supported */ 2598} 2599 2600void 2601usb_set_device_state(struct usb_device *udev, enum usb_dev_state state) 2602{ 2603 2604 KASSERT(state < USB_STATE_MAX, ("invalid udev state")); 2605 2606 DPRINTF("udev %p state %s -> %s\n", udev, 2607 usb_statestr(udev->state), usb_statestr(state)); 2608 udev->state = state; 2609 2610 if (udev->bus->methods->device_state_change != NULL) 2611 (udev->bus->methods->device_state_change) (udev); 2612} 2613 2614enum usb_dev_state 2615usb_get_device_state(struct usb_device *udev) 2616{ 2617 if (udev == NULL) 2618 return (USB_STATE_DETACHED); 2619 return (udev->state); 2620} 2621 2622uint8_t 2623usbd_device_attached(struct usb_device *udev) 2624{ 2625 return (udev->state > USB_STATE_DETACHED); 2626} 2627 2628/* The following function locks enumerating the given USB device. */ 2629 2630void 2631usbd_enum_lock(struct usb_device *udev) 2632{ 2633 sx_xlock(&udev->enum_sx); 2634 sx_xlock(&udev->sr_sx); 2635 /* 2636 * NEWBUS LOCK NOTE: We should check if any parent SX locks 2637 * are locked before locking Giant. Else the lock can be 2638 * locked multiple times. 2639 */ 2640 mtx_lock(&Giant); 2641} 2642 2643/* The following function unlocks enumerating the given USB device. */ 2644 2645void 2646usbd_enum_unlock(struct usb_device *udev) 2647{ 2648 mtx_unlock(&Giant); 2649 sx_xunlock(&udev->enum_sx); 2650 sx_xunlock(&udev->sr_sx); 2651} 2652 2653/* The following function locks suspend and resume. */ 2654 2655void 2656usbd_sr_lock(struct usb_device *udev) 2657{ 2658 sx_xlock(&udev->sr_sx); 2659 /* 2660 * NEWBUS LOCK NOTE: We should check if any parent SX locks 2661 * are locked before locking Giant. Else the lock can be 2662 * locked multiple times. 2663 */ 2664 mtx_lock(&Giant); 2665} 2666 2667/* The following function unlocks suspend and resume. */ 2668 2669void 2670usbd_sr_unlock(struct usb_device *udev) 2671{ 2672 mtx_unlock(&Giant); 2673 sx_xunlock(&udev->sr_sx); 2674} 2675 2676/* 2677 * The following function checks the enumerating lock for the given 2678 * USB device. 2679 */ 2680 2681uint8_t 2682usbd_enum_is_locked(struct usb_device *udev) 2683{ 2684 return (sx_xlocked(&udev->enum_sx)); 2685} 2686 2687/* 2688 * The following function is used to set the per-interface specific 2689 * plug and play information. The string referred to by the pnpinfo 2690 * argument can safely be freed after calling this function. The 2691 * pnpinfo of an interface will be reset at device detach or when 2692 * passing a NULL argument to this function. This function 2693 * returns zero on success, else a USB_ERR_XXX failure code. 2694 */ 2695 2696usb_error_t 2697usbd_set_pnpinfo(struct usb_device *udev, uint8_t iface_index, const char *pnpinfo) 2698{ 2699 struct usb_interface *iface; 2700 2701 iface = usbd_get_iface(udev, iface_index); 2702 if (iface == NULL) 2703 return (USB_ERR_INVAL); 2704 2705 if (iface->pnpinfo != NULL) { 2706 free(iface->pnpinfo, M_USBDEV); 2707 iface->pnpinfo = NULL; 2708 } 2709 2710 if (pnpinfo == NULL || pnpinfo[0] == 0) 2711 return (0); /* success */ 2712 2713 iface->pnpinfo = strdup(pnpinfo, M_USBDEV); 2714 if (iface->pnpinfo == NULL) 2715 return (USB_ERR_NOMEM); 2716 2717 return (0); /* success */ 2718} 2719 2720usb_error_t 2721usbd_add_dynamic_quirk(struct usb_device *udev, uint16_t quirk) 2722{ 2723 uint8_t x; 2724 2725 for (x = 0; x != USB_MAX_AUTO_QUIRK; x++) { 2726 if (udev->autoQuirk[x] == 0) { 2727 udev->autoQuirk[x] = quirk; 2728 return (0); /* success */ 2729 } 2730 } 2731 return (USB_ERR_NOMEM); 2732} 2733