1 /* $FreeBSD$ */ 2 /*- 3 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 4 * 5 * Copyright (c) 2008-2020 Hans Petter Selasky. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #ifdef USB_GLOBAL_INCLUDE_FILE 30 #include USB_GLOBAL_INCLUDE_FILE 31 #else 32 #include <sys/stdint.h> 33 #include <sys/stddef.h> 34 #include <sys/param.h> 35 #include <sys/eventhandler.h> 36 #include <sys/queue.h> 37 #include <sys/systm.h> 38 #include <sys/kernel.h> 39 #include <sys/bus.h> 40 #include <sys/module.h> 41 #include <sys/lock.h> 42 #include <sys/mutex.h> 43 #include <sys/condvar.h> 44 #include <sys/sysctl.h> 45 #include <sys/sx.h> 46 #include <sys/unistd.h> 47 #include <sys/callout.h> 48 #include <sys/malloc.h> 49 #include <sys/priv.h> 50 #include <sys/conf.h> 51 #include <sys/fcntl.h> 52 53 #include <dev/usb/usb.h> 54 #include <dev/usb/usbdi.h> 55 #include <dev/usb/usbdi_util.h> 56 #include <dev/usb/usb_ioctl.h> 57 58 #if USB_HAVE_UGEN 59 #include <sys/sbuf.h> 60 #endif 61 62 #include "usbdevs.h" 63 64 #define USB_DEBUG_VAR usb_debug 65 66 #include <dev/usb/usb_core.h> 67 #include <dev/usb/usb_debug.h> 68 #include <dev/usb/usb_process.h> 69 #include <dev/usb/usb_device.h> 70 #include <dev/usb/usb_busdma.h> 71 #include <dev/usb/usb_transfer.h> 72 #include <dev/usb/usb_request.h> 73 #include <dev/usb/usb_dynamic.h> 74 #include <dev/usb/usb_hub.h> 75 #include <dev/usb/usb_util.h> 76 #include <dev/usb/usb_msctest.h> 77 #if USB_HAVE_UGEN 78 #include <dev/usb/usb_dev.h> 79 #include <dev/usb/usb_generic.h> 80 #endif 81 82 #include <dev/usb/quirk/usb_quirk.h> 83 84 #include <dev/usb/usb_controller.h> 85 #include <dev/usb/usb_bus.h> 86 #endif /* USB_GLOBAL_INCLUDE_FILE */ 87 88 /* function prototypes */ 89 90 static int sysctl_hw_usb_template(SYSCTL_HANDLER_ARGS); 91 static void usb_init_endpoint(struct usb_device *, uint8_t, 92 struct usb_endpoint_descriptor *, 93 struct usb_endpoint_ss_comp_descriptor *, 94 struct usb_endpoint *); 95 static void usb_unconfigure(struct usb_device *, uint8_t); 96 static void usb_detach_device_sub(struct usb_device *, device_t *, 97 char **, uint8_t); 98 static uint8_t usb_probe_and_attach_sub(struct usb_device *, 99 struct usb_attach_arg *); 100 static void usb_init_attach_arg(struct usb_device *, 101 struct usb_attach_arg *); 102 static void usb_suspend_resume_sub(struct usb_device *, device_t, 103 uint8_t); 104 static usb_proc_callback_t usbd_clear_stall_proc; 105 static usb_error_t usb_config_parse(struct usb_device *, uint8_t, uint8_t); 106 #if USB_HAVE_DEVCTL 107 static void usb_notify_addq(const char *type, struct usb_device *); 108 #endif 109 #if USB_HAVE_UGEN 110 static void usb_fifo_free_wrap(struct usb_device *, uint8_t, uint8_t); 111 static void usb_cdev_create(struct usb_device *); 112 static void usb_cdev_free(struct usb_device *); 113 #endif 114 115 /* This variable is global to allow easy access to it: */ 116 117 #ifdef USB_TEMPLATE 118 int usb_template = USB_TEMPLATE; 119 #else 120 int usb_template = -1; 121 #endif 122 123 SYSCTL_PROC(_hw_usb, OID_AUTO, template, 124 CTLTYPE_INT | CTLFLAG_RWTUN | CTLFLAG_MPSAFE, 125 NULL, 0, sysctl_hw_usb_template, 126 "I", "Selected USB device side template"); 127 128 /*------------------------------------------------------------------------* 129 * usb_trigger_reprobe_on_off 130 * 131 * This function sets the pull up resistors for all ports currently 132 * operating in device mode either on (when on_not_off is 1), or off 133 * (when it's 0). 134 *------------------------------------------------------------------------*/ 135 static void 136 usb_trigger_reprobe_on_off(int on_not_off) 137 { 138 struct usb_port_status ps; 139 struct usb_bus *bus; 140 struct usb_device *udev; 141 usb_error_t err; 142 int do_unlock, max; 143 144 max = devclass_get_maxunit(usb_devclass_ptr); 145 while (max >= 0) { 146 mtx_lock(&usb_ref_lock); 147 bus = devclass_get_softc(usb_devclass_ptr, max); 148 max--; 149 150 if (bus == NULL || bus->devices == NULL || 151 bus->devices[USB_ROOT_HUB_ADDR] == NULL) { 152 mtx_unlock(&usb_ref_lock); 153 continue; 154 } 155 156 udev = bus->devices[USB_ROOT_HUB_ADDR]; 157 158 if (udev->refcount == USB_DEV_REF_MAX) { 159 mtx_unlock(&usb_ref_lock); 160 continue; 161 } 162 163 udev->refcount++; 164 mtx_unlock(&usb_ref_lock); 165 166 do_unlock = usbd_enum_lock(udev); 167 if (do_unlock > 1) { 168 do_unlock = 0; 169 goto next; 170 } 171 172 err = usbd_req_get_port_status(udev, NULL, &ps, 1); 173 if (err != 0) { 174 DPRINTF("usbd_req_get_port_status() " 175 "failed: %s\n", usbd_errstr(err)); 176 goto next; 177 } 178 179 if ((UGETW(ps.wPortStatus) & UPS_PORT_MODE_DEVICE) == 0) 180 goto next; 181 182 if (on_not_off) { 183 err = usbd_req_set_port_feature(udev, NULL, 1, 184 UHF_PORT_POWER); 185 if (err != 0) { 186 DPRINTF("usbd_req_set_port_feature() " 187 "failed: %s\n", usbd_errstr(err)); 188 } 189 } else { 190 err = usbd_req_clear_port_feature(udev, NULL, 1, 191 UHF_PORT_POWER); 192 if (err != 0) { 193 DPRINTF("usbd_req_clear_port_feature() " 194 "failed: %s\n", usbd_errstr(err)); 195 } 196 } 197 198 next: 199 mtx_lock(&usb_ref_lock); 200 if (do_unlock) 201 usbd_enum_unlock(udev); 202 if (--(udev->refcount) == 0) 203 cv_broadcast(&udev->ref_cv); 204 mtx_unlock(&usb_ref_lock); 205 } 206 } 207 208 /*------------------------------------------------------------------------* 209 * usb_trigger_reprobe_all 210 * 211 * This function toggles the pull up resistors for all ports currently 212 * operating in device mode, causing the host machine to reenumerate them. 213 *------------------------------------------------------------------------*/ 214 static void 215 usb_trigger_reprobe_all(void) 216 { 217 218 /* 219 * Set the pull up resistors off for all ports in device mode. 220 */ 221 usb_trigger_reprobe_on_off(0); 222 223 /* 224 * According to the DWC OTG spec this must be at least 3ms. 225 */ 226 usb_pause_mtx(NULL, USB_MS_TO_TICKS(USB_POWER_DOWN_TIME)); 227 228 /* 229 * Set the pull up resistors back on. 230 */ 231 usb_trigger_reprobe_on_off(1); 232 } 233 234 static int 235 sysctl_hw_usb_template(SYSCTL_HANDLER_ARGS) 236 { 237 int error, val; 238 239 val = usb_template; 240 error = sysctl_handle_int(oidp, &val, 0, req); 241 if (error != 0 || req->newptr == NULL || usb_template == val) 242 return (error); 243 244 usb_template = val; 245 246 if (usb_template < 0) { 247 usb_trigger_reprobe_on_off(0); 248 } else { 249 usb_trigger_reprobe_all(); 250 } 251 252 return (0); 253 } 254 255 /* English is default language */ 256 257 static int usb_lang_id = 0x0009; 258 static int usb_lang_mask = 0x00FF; 259 260 SYSCTL_INT(_hw_usb, OID_AUTO, usb_lang_id, CTLFLAG_RWTUN, 261 &usb_lang_id, 0, "Preferred USB language ID"); 262 263 SYSCTL_INT(_hw_usb, OID_AUTO, usb_lang_mask, CTLFLAG_RWTUN, 264 &usb_lang_mask, 0, "Preferred USB language mask"); 265 266 static const char* statestr[USB_STATE_MAX] = { 267 [USB_STATE_DETACHED] = "DETACHED", 268 [USB_STATE_ATTACHED] = "ATTACHED", 269 [USB_STATE_POWERED] = "POWERED", 270 [USB_STATE_ADDRESSED] = "ADDRESSED", 271 [USB_STATE_CONFIGURED] = "CONFIGURED", 272 }; 273 274 const char * 275 usb_statestr(enum usb_dev_state state) 276 { 277 return ((state < USB_STATE_MAX) ? statestr[state] : "UNKNOWN"); 278 } 279 280 const char * 281 usb_get_manufacturer(struct usb_device *udev) 282 { 283 return (udev->manufacturer ? udev->manufacturer : "Unknown"); 284 } 285 286 const char * 287 usb_get_product(struct usb_device *udev) 288 { 289 return (udev->product ? udev->product : ""); 290 } 291 292 const char * 293 usb_get_serial(struct usb_device *udev) 294 { 295 return (udev->serial ? udev->serial : ""); 296 } 297 298 /*------------------------------------------------------------------------* 299 * usbd_get_ep_by_addr 300 * 301 * This function searches for an USB ep by endpoint address and 302 * direction. 303 * 304 * Returns: 305 * NULL: Failure 306 * Else: Success 307 *------------------------------------------------------------------------*/ 308 struct usb_endpoint * 309 usbd_get_ep_by_addr(struct usb_device *udev, uint8_t ea_val) 310 { 311 struct usb_endpoint *ep = udev->endpoints; 312 struct usb_endpoint *ep_end = udev->endpoints + udev->endpoints_max; 313 enum { 314 EA_MASK = (UE_DIR_IN | UE_DIR_OUT | UE_ADDR), 315 }; 316 317 /* 318 * According to the USB specification not all bits are used 319 * for the endpoint address. Keep defined bits only: 320 */ 321 ea_val &= EA_MASK; 322 323 /* 324 * Iterate across all the USB endpoints searching for a match 325 * based on the endpoint address: 326 */ 327 for (; ep != ep_end; ep++) { 328 if (ep->edesc == NULL) { 329 continue; 330 } 331 /* do the mask and check the value */ 332 if ((ep->edesc->bEndpointAddress & EA_MASK) == ea_val) { 333 goto found; 334 } 335 } 336 337 /* 338 * The default endpoint is always present and is checked separately: 339 */ 340 if ((udev->ctrl_ep.edesc != NULL) && 341 ((udev->ctrl_ep.edesc->bEndpointAddress & EA_MASK) == ea_val)) { 342 ep = &udev->ctrl_ep; 343 goto found; 344 } 345 return (NULL); 346 347 found: 348 return (ep); 349 } 350 351 /*------------------------------------------------------------------------* 352 * usbd_get_endpoint 353 * 354 * This function searches for an USB endpoint based on the information 355 * given by the passed "struct usb_config" pointer. 356 * 357 * Return values: 358 * NULL: No match. 359 * Else: Pointer to "struct usb_endpoint". 360 *------------------------------------------------------------------------*/ 361 struct usb_endpoint * 362 usbd_get_endpoint(struct usb_device *udev, uint8_t iface_index, 363 const struct usb_config *setup) 364 { 365 struct usb_endpoint *ep = udev->endpoints; 366 struct usb_endpoint *ep_end = udev->endpoints + udev->endpoints_max; 367 uint8_t index = setup->ep_index; 368 uint8_t ea_mask; 369 uint8_t ea_val; 370 uint8_t type_mask; 371 uint8_t type_val; 372 373 DPRINTFN(10, "udev=%p iface_index=%d address=0x%x " 374 "type=0x%x dir=0x%x index=%d\n", 375 udev, iface_index, setup->endpoint, 376 setup->type, setup->direction, setup->ep_index); 377 378 /* check USB mode */ 379 380 if (setup->usb_mode != USB_MODE_DUAL && 381 udev->flags.usb_mode != setup->usb_mode) { 382 /* wrong mode - no endpoint */ 383 return (NULL); 384 } 385 386 /* setup expected endpoint direction mask and value */ 387 388 if (setup->direction == UE_DIR_RX) { 389 ea_mask = (UE_DIR_IN | UE_DIR_OUT); 390 ea_val = (udev->flags.usb_mode == USB_MODE_DEVICE) ? 391 UE_DIR_OUT : UE_DIR_IN; 392 } else if (setup->direction == UE_DIR_TX) { 393 ea_mask = (UE_DIR_IN | UE_DIR_OUT); 394 ea_val = (udev->flags.usb_mode == USB_MODE_DEVICE) ? 395 UE_DIR_IN : UE_DIR_OUT; 396 } else if (setup->direction == UE_DIR_ANY) { 397 /* match any endpoint direction */ 398 ea_mask = 0; 399 ea_val = 0; 400 } else { 401 /* match the given endpoint direction */ 402 ea_mask = (UE_DIR_IN | UE_DIR_OUT); 403 ea_val = (setup->direction & (UE_DIR_IN | UE_DIR_OUT)); 404 } 405 406 /* setup expected endpoint address */ 407 408 if (setup->endpoint == UE_ADDR_ANY) { 409 /* match any endpoint address */ 410 } else { 411 /* match the given endpoint address */ 412 ea_mask |= UE_ADDR; 413 ea_val |= (setup->endpoint & UE_ADDR); 414 } 415 416 /* setup expected endpoint type */ 417 418 if (setup->type == UE_BULK_INTR) { 419 /* this will match BULK and INTERRUPT endpoints */ 420 type_mask = 2; 421 type_val = 2; 422 } else if (setup->type == UE_TYPE_ANY) { 423 /* match any endpoint type */ 424 type_mask = 0; 425 type_val = 0; 426 } else { 427 /* match the given endpoint type */ 428 type_mask = UE_XFERTYPE; 429 type_val = (setup->type & UE_XFERTYPE); 430 } 431 432 /* 433 * Iterate across all the USB endpoints searching for a match 434 * based on the endpoint address. Note that we are searching 435 * the endpoints from the beginning of the "udev->endpoints" array. 436 */ 437 for (; ep != ep_end; ep++) { 438 if ((ep->edesc == NULL) || 439 (ep->iface_index != iface_index)) { 440 continue; 441 } 442 /* do the masks and check the values */ 443 444 if (((ep->edesc->bEndpointAddress & ea_mask) == ea_val) && 445 ((ep->edesc->bmAttributes & type_mask) == type_val)) { 446 if (!index--) { 447 goto found; 448 } 449 } 450 } 451 452 /* 453 * Match against default endpoint last, so that "any endpoint", "any 454 * address" and "any direction" returns the first endpoint of the 455 * interface. "iface_index" and "direction" is ignored: 456 */ 457 if ((udev->ctrl_ep.edesc != NULL) && 458 ((udev->ctrl_ep.edesc->bEndpointAddress & ea_mask) == ea_val) && 459 ((udev->ctrl_ep.edesc->bmAttributes & type_mask) == type_val) && 460 (!index)) { 461 ep = &udev->ctrl_ep; 462 goto found; 463 } 464 return (NULL); 465 466 found: 467 return (ep); 468 } 469 470 /*------------------------------------------------------------------------* 471 * usbd_interface_count 472 * 473 * This function stores the number of USB interfaces excluding 474 * alternate settings, which the USB config descriptor reports into 475 * the unsigned 8-bit integer pointed to by "count". 476 * 477 * Returns: 478 * 0: Success 479 * Else: Failure 480 *------------------------------------------------------------------------*/ 481 usb_error_t 482 usbd_interface_count(struct usb_device *udev, uint8_t *count) 483 { 484 if (udev->cdesc == NULL) { 485 *count = 0; 486 return (USB_ERR_NOT_CONFIGURED); 487 } 488 *count = udev->ifaces_max; 489 return (USB_ERR_NORMAL_COMPLETION); 490 } 491 492 /*------------------------------------------------------------------------* 493 * usb_init_endpoint 494 * 495 * This function will initialise the USB endpoint structure pointed to by 496 * the "endpoint" argument. The structure pointed to by "endpoint" must be 497 * zeroed before calling this function. 498 *------------------------------------------------------------------------*/ 499 static void 500 usb_init_endpoint(struct usb_device *udev, uint8_t iface_index, 501 struct usb_endpoint_descriptor *edesc, 502 struct usb_endpoint_ss_comp_descriptor *ecomp, 503 struct usb_endpoint *ep) 504 { 505 const struct usb_bus_methods *methods; 506 usb_stream_t x; 507 508 methods = udev->bus->methods; 509 510 (methods->endpoint_init) (udev, edesc, ep); 511 512 /* initialise USB endpoint structure */ 513 ep->edesc = edesc; 514 ep->ecomp = ecomp; 515 ep->iface_index = iface_index; 516 517 /* setup USB stream queues */ 518 for (x = 0; x != USB_MAX_EP_STREAMS; x++) { 519 TAILQ_INIT(&ep->endpoint_q[x].head); 520 ep->endpoint_q[x].command = &usbd_pipe_start; 521 } 522 523 /* the pipe is not supported by the hardware */ 524 if (ep->methods == NULL) 525 return; 526 527 /* check for SUPER-speed streams mode endpoint */ 528 if (udev->speed == USB_SPEED_SUPER && ecomp != NULL && 529 (edesc->bmAttributes & UE_XFERTYPE) == UE_BULK && 530 (UE_GET_BULK_STREAMS(ecomp->bmAttributes) != 0)) { 531 usbd_set_endpoint_mode(udev, ep, USB_EP_MODE_STREAMS); 532 } else { 533 usbd_set_endpoint_mode(udev, ep, USB_EP_MODE_DEFAULT); 534 } 535 536 /* clear stall, if any */ 537 if (methods->clear_stall != NULL) { 538 USB_BUS_LOCK(udev->bus); 539 (methods->clear_stall) (udev, ep); 540 USB_BUS_UNLOCK(udev->bus); 541 } 542 } 543 544 /*-----------------------------------------------------------------------* 545 * usb_endpoint_foreach 546 * 547 * This function will iterate all the USB endpoints except the control 548 * endpoint. This function is NULL safe. 549 * 550 * Return values: 551 * NULL: End of USB endpoints 552 * Else: Pointer to next USB endpoint 553 *------------------------------------------------------------------------*/ 554 struct usb_endpoint * 555 usb_endpoint_foreach(struct usb_device *udev, struct usb_endpoint *ep) 556 { 557 struct usb_endpoint *ep_end; 558 559 /* be NULL safe */ 560 if (udev == NULL) 561 return (NULL); 562 563 ep_end = udev->endpoints + udev->endpoints_max; 564 565 /* get next endpoint */ 566 if (ep == NULL) 567 ep = udev->endpoints; 568 else 569 ep++; 570 571 /* find next allocated ep */ 572 while (ep != ep_end) { 573 if (ep->edesc != NULL) 574 return (ep); 575 ep++; 576 } 577 return (NULL); 578 } 579 580 /*------------------------------------------------------------------------* 581 * usb_wait_pending_refs 582 * 583 * This function will wait for any USB references to go away before 584 * returning. This function is used before freeing a USB device. 585 *------------------------------------------------------------------------*/ 586 static void 587 usb_wait_pending_refs(struct usb_device *udev) 588 { 589 #if USB_HAVE_UGEN 590 DPRINTF("Refcount = %d\n", (int)udev->refcount); 591 592 mtx_lock(&usb_ref_lock); 593 udev->refcount--; 594 while (1) { 595 /* wait for any pending references to go away */ 596 if (udev->refcount == 0) { 597 /* prevent further refs being taken, if any */ 598 udev->refcount = USB_DEV_REF_MAX; 599 break; 600 } 601 cv_wait(&udev->ref_cv, &usb_ref_lock); 602 } 603 mtx_unlock(&usb_ref_lock); 604 #endif 605 } 606 607 /*------------------------------------------------------------------------* 608 * usb_unconfigure 609 * 610 * This function will free all USB interfaces and USB endpoints belonging 611 * to an USB device. 612 * 613 * Flag values, see "USB_UNCFG_FLAG_XXX". 614 *------------------------------------------------------------------------*/ 615 static void 616 usb_unconfigure(struct usb_device *udev, uint8_t flag) 617 { 618 uint8_t do_unlock; 619 620 /* Prevent re-enumeration */ 621 do_unlock = usbd_enum_lock(udev); 622 623 /* detach all interface drivers */ 624 usb_detach_device(udev, USB_IFACE_INDEX_ANY, flag); 625 626 #if USB_HAVE_UGEN 627 /* free all FIFOs except control endpoint FIFOs */ 628 usb_fifo_free_wrap(udev, USB_IFACE_INDEX_ANY, flag); 629 630 /* 631 * Free all cdev's, if any. 632 */ 633 usb_cdev_free(udev); 634 #endif 635 636 #if USB_HAVE_COMPAT_LINUX 637 /* free Linux compat device, if any */ 638 if (udev->linux_endpoint_start != NULL) { 639 usb_linux_free_device_p(udev); 640 udev->linux_endpoint_start = NULL; 641 } 642 #endif 643 644 usb_config_parse(udev, USB_IFACE_INDEX_ANY, USB_CFG_FREE); 645 646 /* free "cdesc" after "ifaces" and "endpoints", if any */ 647 if (udev->cdesc != NULL) { 648 if (udev->flags.usb_mode != USB_MODE_DEVICE) 649 usbd_free_config_desc(udev, udev->cdesc); 650 udev->cdesc = NULL; 651 } 652 /* set unconfigured state */ 653 udev->curr_config_no = USB_UNCONFIG_NO; 654 udev->curr_config_index = USB_UNCONFIG_INDEX; 655 656 if (do_unlock) 657 usbd_enum_unlock(udev); 658 } 659 660 /*------------------------------------------------------------------------* 661 * usbd_set_config_index 662 * 663 * This function selects configuration by index, independent of the 664 * actual configuration number. This function should not be used by 665 * USB drivers. 666 * 667 * Returns: 668 * 0: Success 669 * Else: Failure 670 *------------------------------------------------------------------------*/ 671 usb_error_t 672 usbd_set_config_index(struct usb_device *udev, uint8_t index) 673 { 674 struct usb_status ds; 675 struct usb_config_descriptor *cdp; 676 uint16_t power; 677 uint16_t max_power; 678 uint8_t selfpowered; 679 uint8_t do_unlock; 680 usb_error_t err; 681 682 DPRINTFN(6, "udev=%p index=%d\n", udev, index); 683 684 /* Prevent re-enumeration */ 685 do_unlock = usbd_enum_lock(udev); 686 687 usb_unconfigure(udev, 0); 688 689 if (index == USB_UNCONFIG_INDEX) { 690 /* 691 * Leave unallocated when unconfiguring the 692 * device. "usb_unconfigure()" will also reset 693 * the current config number and index. 694 */ 695 err = usbd_req_set_config(udev, NULL, USB_UNCONFIG_NO); 696 if (udev->state == USB_STATE_CONFIGURED) 697 usb_set_device_state(udev, USB_STATE_ADDRESSED); 698 goto done; 699 } 700 /* get the full config descriptor */ 701 if (udev->flags.usb_mode == USB_MODE_DEVICE) { 702 /* save some memory */ 703 err = usbd_req_get_descriptor_ptr(udev, &cdp, 704 (UDESC_CONFIG << 8) | index); 705 } else { 706 /* normal request */ 707 err = usbd_req_get_config_desc_full(udev, 708 NULL, &cdp, index); 709 } 710 if (err) { 711 goto done; 712 } 713 /* set the new config descriptor */ 714 715 udev->cdesc = cdp; 716 717 /* Figure out if the device is self or bus powered. */ 718 selfpowered = 0; 719 if ((!udev->flags.uq_bus_powered) && 720 (cdp->bmAttributes & UC_SELF_POWERED) && 721 (udev->flags.usb_mode == USB_MODE_HOST)) { 722 /* May be self powered. */ 723 if (cdp->bmAttributes & UC_BUS_POWERED) { 724 /* Must ask device. */ 725 err = usbd_req_get_device_status(udev, NULL, &ds); 726 if (err) { 727 DPRINTFN(0, "could not read " 728 "device status: %s\n", 729 usbd_errstr(err)); 730 } else if (UGETW(ds.wStatus) & UDS_SELF_POWERED) { 731 selfpowered = 1; 732 } 733 DPRINTF("status=0x%04x \n", 734 UGETW(ds.wStatus)); 735 } else 736 selfpowered = 1; 737 } 738 DPRINTF("udev=%p cdesc=%p (addr %d) cno=%d attr=0x%02x, " 739 "selfpowered=%d, power=%d\n", 740 udev, cdp, 741 udev->address, cdp->bConfigurationValue, cdp->bmAttributes, 742 selfpowered, cdp->bMaxPower * 2); 743 744 /* Check if we have enough power. */ 745 power = cdp->bMaxPower * 2; 746 747 if (udev->parent_hub) { 748 max_power = udev->parent_hub->hub->portpower; 749 } else { 750 max_power = USB_MAX_POWER; 751 } 752 753 if (power > max_power) { 754 DPRINTFN(0, "power exceeded %d > %d\n", power, max_power); 755 err = USB_ERR_NO_POWER; 756 goto done; 757 } 758 /* Only update "self_powered" in USB Host Mode */ 759 if (udev->flags.usb_mode == USB_MODE_HOST) { 760 udev->flags.self_powered = selfpowered; 761 } 762 udev->power = power; 763 udev->curr_config_no = cdp->bConfigurationValue; 764 udev->curr_config_index = index; 765 usb_set_device_state(udev, USB_STATE_CONFIGURED); 766 767 /* Set the actual configuration value. */ 768 err = usbd_req_set_config(udev, NULL, cdp->bConfigurationValue); 769 if (err) { 770 goto done; 771 } 772 773 err = usb_config_parse(udev, USB_IFACE_INDEX_ANY, USB_CFG_ALLOC); 774 if (err) { 775 goto done; 776 } 777 778 err = usb_config_parse(udev, USB_IFACE_INDEX_ANY, USB_CFG_INIT); 779 if (err) { 780 goto done; 781 } 782 783 #if USB_HAVE_UGEN 784 /* create device nodes for each endpoint */ 785 usb_cdev_create(udev); 786 #endif 787 788 done: 789 DPRINTF("error=%s\n", usbd_errstr(err)); 790 if (err) { 791 usb_unconfigure(udev, 0); 792 } 793 if (do_unlock) 794 usbd_enum_unlock(udev); 795 return (err); 796 } 797 798 /*------------------------------------------------------------------------* 799 * usb_config_parse 800 * 801 * This function will allocate and free USB interfaces and USB endpoints, 802 * parse the USB configuration structure and initialise the USB endpoints 803 * and interfaces. If "iface_index" is not equal to 804 * "USB_IFACE_INDEX_ANY" then the "cmd" parameter is the 805 * alternate_setting to be selected for the given interface. Else the 806 * "cmd" parameter is defined by "USB_CFG_XXX". "iface_index" can be 807 * "USB_IFACE_INDEX_ANY" or a valid USB interface index. This function 808 * is typically called when setting the configuration or when setting 809 * an alternate interface. 810 * 811 * Returns: 812 * 0: Success 813 * Else: Failure 814 *------------------------------------------------------------------------*/ 815 static usb_error_t 816 usb_config_parse(struct usb_device *udev, uint8_t iface_index, uint8_t cmd) 817 { 818 struct usb_idesc_parse_state ips; 819 struct usb_interface_descriptor *id; 820 struct usb_endpoint_descriptor *ed; 821 struct usb_interface *iface; 822 struct usb_endpoint *ep; 823 usb_error_t err; 824 uint8_t ep_curr; 825 uint8_t ep_max; 826 uint8_t temp; 827 uint8_t do_init; 828 uint8_t alt_index; 829 830 if (iface_index != USB_IFACE_INDEX_ANY) { 831 /* parameter overload */ 832 alt_index = cmd; 833 cmd = USB_CFG_INIT; 834 } else { 835 /* not used */ 836 alt_index = 0; 837 } 838 839 err = 0; 840 841 DPRINTFN(5, "iface_index=%d cmd=%d\n", 842 iface_index, cmd); 843 844 if (cmd == USB_CFG_FREE) 845 goto cleanup; 846 847 if (cmd == USB_CFG_INIT) { 848 sx_assert(&udev->enum_sx, SA_LOCKED); 849 850 /* check for in-use endpoints */ 851 852 ep = udev->endpoints; 853 ep_max = udev->endpoints_max; 854 while (ep_max--) { 855 /* look for matching endpoints */ 856 if ((iface_index == USB_IFACE_INDEX_ANY) || 857 (iface_index == ep->iface_index)) { 858 if (ep->refcount_alloc != 0) { 859 /* 860 * This typically indicates a 861 * more serious error. 862 */ 863 err = USB_ERR_IN_USE; 864 } else { 865 /* reset endpoint */ 866 memset(ep, 0, sizeof(*ep)); 867 /* make sure we don't zero the endpoint again */ 868 ep->iface_index = USB_IFACE_INDEX_ANY; 869 } 870 } 871 ep++; 872 } 873 874 if (err) 875 return (err); 876 } 877 878 memset(&ips, 0, sizeof(ips)); 879 880 ep_curr = 0; 881 ep_max = 0; 882 883 while ((id = usb_idesc_foreach(udev->cdesc, &ips))) { 884 iface = udev->ifaces + ips.iface_index; 885 886 /* check for specific interface match */ 887 888 if (cmd == USB_CFG_INIT) { 889 if ((iface_index != USB_IFACE_INDEX_ANY) && 890 (iface_index != ips.iface_index)) { 891 /* wrong interface */ 892 do_init = 0; 893 } else if (alt_index != ips.iface_index_alt) { 894 /* wrong alternate setting */ 895 do_init = 0; 896 } else { 897 /* initialise interface */ 898 do_init = 1; 899 } 900 /* update number of alternate settings, if any */ 901 if (iface_index == USB_IFACE_INDEX_ANY) 902 iface->num_altsetting = ips.iface_index_alt + 1; 903 } else 904 do_init = 0; 905 906 /* check for new interface */ 907 if (ips.iface_index_alt == 0) { 908 /* update current number of endpoints */ 909 ep_curr = ep_max; 910 } 911 912 /* check for init */ 913 if (do_init) { 914 /* setup the USB interface structure */ 915 iface->idesc = id; 916 /* set alternate index */ 917 iface->alt_index = alt_index; 918 /* set default interface parent */ 919 if (iface_index == USB_IFACE_INDEX_ANY) { 920 iface->parent_iface_index = 921 USB_IFACE_INDEX_ANY; 922 } 923 } 924 925 DPRINTFN(5, "found idesc nendpt=%d\n", id->bNumEndpoints); 926 927 ed = (struct usb_endpoint_descriptor *)id; 928 929 temp = ep_curr; 930 931 /* iterate all the endpoint descriptors */ 932 while ((ed = usb_edesc_foreach(udev->cdesc, ed))) { 933 /* check if endpoint limit has been reached */ 934 if (temp >= USB_MAX_EP_UNITS) { 935 DPRINTF("Endpoint limit reached\n"); 936 break; 937 } 938 939 ep = udev->endpoints + temp; 940 941 if (do_init) { 942 void *ecomp; 943 944 ecomp = usb_ed_comp_foreach(udev->cdesc, (void *)ed); 945 if (ecomp != NULL) 946 DPRINTFN(5, "Found endpoint companion descriptor\n"); 947 948 usb_init_endpoint(udev, 949 ips.iface_index, ed, ecomp, ep); 950 } 951 952 temp ++; 953 954 /* find maximum number of endpoints */ 955 if (ep_max < temp) 956 ep_max = temp; 957 } 958 } 959 960 /* NOTE: It is valid to have no interfaces and no endpoints! */ 961 962 if (cmd == USB_CFG_ALLOC) { 963 udev->ifaces_max = ips.iface_index; 964 #if (USB_HAVE_FIXED_IFACE == 0) 965 udev->ifaces = NULL; 966 if (udev->ifaces_max != 0) { 967 udev->ifaces = malloc(sizeof(*iface) * udev->ifaces_max, 968 M_USB, M_WAITOK | M_ZERO); 969 if (udev->ifaces == NULL) { 970 err = USB_ERR_NOMEM; 971 goto done; 972 } 973 } 974 #endif 975 #if (USB_HAVE_FIXED_ENDPOINT == 0) 976 if (ep_max != 0) { 977 udev->endpoints = malloc(sizeof(*ep) * ep_max, 978 M_USB, M_WAITOK | M_ZERO); 979 if (udev->endpoints == NULL) { 980 err = USB_ERR_NOMEM; 981 goto done; 982 } 983 } else { 984 udev->endpoints = NULL; 985 } 986 #endif 987 USB_BUS_LOCK(udev->bus); 988 udev->endpoints_max = ep_max; 989 /* reset any ongoing clear-stall */ 990 udev->ep_curr = NULL; 991 USB_BUS_UNLOCK(udev->bus); 992 } 993 #if (USB_HAVE_FIXED_IFACE == 0) || (USB_HAVE_FIXED_ENDPOINT == 0) 994 done: 995 #endif 996 if (err) { 997 if (cmd == USB_CFG_ALLOC) { 998 cleanup: 999 USB_BUS_LOCK(udev->bus); 1000 udev->endpoints_max = 0; 1001 /* reset any ongoing clear-stall */ 1002 udev->ep_curr = NULL; 1003 USB_BUS_UNLOCK(udev->bus); 1004 1005 #if (USB_HAVE_FIXED_IFACE == 0) 1006 free(udev->ifaces, M_USB); 1007 udev->ifaces = NULL; 1008 #endif 1009 #if (USB_HAVE_FIXED_ENDPOINT == 0) 1010 free(udev->endpoints, M_USB); 1011 udev->endpoints = NULL; 1012 #endif 1013 udev->ifaces_max = 0; 1014 } 1015 } 1016 return (err); 1017 } 1018 1019 /*------------------------------------------------------------------------* 1020 * usbd_set_alt_interface_index 1021 * 1022 * This function will select an alternate interface index for the 1023 * given interface index. The interface should not be in use when this 1024 * function is called. That means there should not be any open USB 1025 * transfers. Else an error is returned. If the alternate setting is 1026 * already set this function will simply return success. This function 1027 * is called in Host mode and Device mode! 1028 * 1029 * Returns: 1030 * 0: Success 1031 * Else: Failure 1032 *------------------------------------------------------------------------*/ 1033 usb_error_t 1034 usbd_set_alt_interface_index(struct usb_device *udev, 1035 uint8_t iface_index, uint8_t alt_index) 1036 { 1037 struct usb_interface *iface = usbd_get_iface(udev, iface_index); 1038 usb_error_t err; 1039 uint8_t do_unlock; 1040 1041 /* Prevent re-enumeration */ 1042 do_unlock = usbd_enum_lock(udev); 1043 1044 if (iface == NULL) { 1045 err = USB_ERR_INVAL; 1046 goto done; 1047 } 1048 if (iface->alt_index == alt_index) { 1049 /* 1050 * Optimise away duplicate setting of 1051 * alternate setting in USB Host Mode! 1052 */ 1053 err = 0; 1054 goto done; 1055 } 1056 #if USB_HAVE_UGEN 1057 /* 1058 * Free all generic FIFOs for this interface, except control 1059 * endpoint FIFOs: 1060 */ 1061 usb_fifo_free_wrap(udev, iface_index, 0); 1062 #endif 1063 1064 err = usb_config_parse(udev, iface_index, alt_index); 1065 if (err) { 1066 goto done; 1067 } 1068 if (iface->alt_index != alt_index) { 1069 /* the alternate setting does not exist */ 1070 err = USB_ERR_INVAL; 1071 goto done; 1072 } 1073 1074 err = usbd_req_set_alt_interface_no(udev, NULL, iface_index, 1075 iface->idesc->bAlternateSetting); 1076 1077 done: 1078 if (do_unlock) 1079 usbd_enum_unlock(udev); 1080 return (err); 1081 } 1082 1083 /*------------------------------------------------------------------------* 1084 * usbd_set_endpoint_stall 1085 * 1086 * This function is used to make a BULK or INTERRUPT endpoint send 1087 * STALL tokens in USB device mode. 1088 * 1089 * Returns: 1090 * 0: Success 1091 * Else: Failure 1092 *------------------------------------------------------------------------*/ 1093 usb_error_t 1094 usbd_set_endpoint_stall(struct usb_device *udev, struct usb_endpoint *ep, 1095 uint8_t do_stall) 1096 { 1097 struct usb_xfer *xfer; 1098 usb_stream_t x; 1099 uint8_t et; 1100 uint8_t was_stalled; 1101 1102 if (ep == NULL) { 1103 /* nothing to do */ 1104 DPRINTF("Cannot find endpoint\n"); 1105 /* 1106 * Pretend that the clear or set stall request is 1107 * successful else some USB host stacks can do 1108 * strange things, especially when a control endpoint 1109 * stalls. 1110 */ 1111 return (0); 1112 } 1113 et = (ep->edesc->bmAttributes & UE_XFERTYPE); 1114 1115 if ((et != UE_BULK) && 1116 (et != UE_INTERRUPT)) { 1117 /* 1118 * Should not stall control 1119 * nor isochronous endpoints. 1120 */ 1121 DPRINTF("Invalid endpoint\n"); 1122 return (0); 1123 } 1124 USB_BUS_LOCK(udev->bus); 1125 1126 /* store current stall state */ 1127 was_stalled = ep->is_stalled; 1128 1129 /* check for no change */ 1130 if (was_stalled && do_stall) { 1131 /* if the endpoint is already stalled do nothing */ 1132 USB_BUS_UNLOCK(udev->bus); 1133 DPRINTF("No change\n"); 1134 return (0); 1135 } 1136 /* set stalled state */ 1137 ep->is_stalled = 1; 1138 1139 if (do_stall || (!was_stalled)) { 1140 if (!was_stalled) { 1141 for (x = 0; x != USB_MAX_EP_STREAMS; x++) { 1142 /* lookup the current USB transfer, if any */ 1143 xfer = ep->endpoint_q[x].curr; 1144 if (xfer != NULL) { 1145 /* 1146 * The "xfer_stall" method 1147 * will complete the USB 1148 * transfer like in case of a 1149 * timeout setting the error 1150 * code "USB_ERR_STALLED". 1151 */ 1152 (udev->bus->methods->xfer_stall) (xfer); 1153 } 1154 } 1155 } 1156 (udev->bus->methods->set_stall) (udev, ep, &do_stall); 1157 } 1158 if (!do_stall) { 1159 ep->toggle_next = 0; /* reset data toggle */ 1160 ep->is_stalled = 0; /* clear stalled state */ 1161 1162 (udev->bus->methods->clear_stall) (udev, ep); 1163 1164 /* start the current or next transfer, if any */ 1165 for (x = 0; x != USB_MAX_EP_STREAMS; x++) { 1166 usb_command_wrapper(&ep->endpoint_q[x], 1167 ep->endpoint_q[x].curr); 1168 } 1169 } 1170 USB_BUS_UNLOCK(udev->bus); 1171 return (0); 1172 } 1173 1174 /*------------------------------------------------------------------------* 1175 * usb_reset_iface_endpoints - used in USB device side mode 1176 *------------------------------------------------------------------------*/ 1177 usb_error_t 1178 usb_reset_iface_endpoints(struct usb_device *udev, uint8_t iface_index) 1179 { 1180 struct usb_endpoint *ep; 1181 struct usb_endpoint *ep_end; 1182 1183 ep = udev->endpoints; 1184 ep_end = udev->endpoints + udev->endpoints_max; 1185 1186 for (; ep != ep_end; ep++) { 1187 if ((ep->edesc == NULL) || 1188 (ep->iface_index != iface_index)) { 1189 continue; 1190 } 1191 /* simulate a clear stall from the peer */ 1192 usbd_set_endpoint_stall(udev, ep, 0); 1193 } 1194 return (0); 1195 } 1196 1197 /*------------------------------------------------------------------------* 1198 * usb_detach_device_sub 1199 * 1200 * This function will try to detach an USB device. If it fails a panic 1201 * will result. 1202 * 1203 * Flag values, see "USB_UNCFG_FLAG_XXX". 1204 *------------------------------------------------------------------------*/ 1205 static void 1206 usb_detach_device_sub(struct usb_device *udev, device_t *ppdev, 1207 char **ppnpinfo, uint8_t flag) 1208 { 1209 device_t dev; 1210 char *pnpinfo; 1211 int err; 1212 1213 dev = *ppdev; 1214 if (dev) { 1215 /* 1216 * NOTE: It is important to clear "*ppdev" before deleting 1217 * the child due to some device methods being called late 1218 * during the delete process ! 1219 */ 1220 *ppdev = NULL; 1221 1222 if (!rebooting) { 1223 device_printf(dev, "at %s, port %d, addr %d " 1224 "(disconnected)\n", 1225 device_get_nameunit(udev->parent_dev), 1226 udev->port_no, udev->address); 1227 } 1228 1229 if (device_is_attached(dev)) { 1230 if (udev->flags.peer_suspended) { 1231 err = DEVICE_RESUME(dev); 1232 if (err) { 1233 device_printf(dev, "Resume failed\n"); 1234 } 1235 } 1236 } 1237 /* detach and delete child */ 1238 if (device_delete_child(udev->parent_dev, dev)) { 1239 goto error; 1240 } 1241 } 1242 1243 pnpinfo = *ppnpinfo; 1244 if (pnpinfo != NULL) { 1245 *ppnpinfo = NULL; 1246 free(pnpinfo, M_USBDEV); 1247 } 1248 return; 1249 1250 error: 1251 /* Detach is not allowed to fail in the USB world */ 1252 panic("usb_detach_device_sub: A USB driver would not detach\n"); 1253 } 1254 1255 /*------------------------------------------------------------------------* 1256 * usb_detach_device 1257 * 1258 * The following function will detach the matching interfaces. 1259 * This function is NULL safe. 1260 * 1261 * Flag values, see "USB_UNCFG_FLAG_XXX". 1262 *------------------------------------------------------------------------*/ 1263 void 1264 usb_detach_device(struct usb_device *udev, uint8_t iface_index, 1265 uint8_t flag) 1266 { 1267 struct usb_interface *iface; 1268 uint8_t i; 1269 1270 if (udev == NULL) { 1271 /* nothing to do */ 1272 return; 1273 } 1274 DPRINTFN(4, "udev=%p\n", udev); 1275 1276 sx_assert(&udev->enum_sx, SA_LOCKED); 1277 1278 /* 1279 * First detach the child to give the child's detach routine a 1280 * chance to detach the sub-devices in the correct order. 1281 * Then delete the child using "device_delete_child()" which 1282 * will detach all sub-devices from the bottom and upwards! 1283 */ 1284 if (iface_index != USB_IFACE_INDEX_ANY) { 1285 i = iface_index; 1286 iface_index = i + 1; 1287 } else { 1288 i = 0; 1289 iface_index = USB_IFACE_MAX; 1290 } 1291 1292 /* do the detach */ 1293 1294 for (; i != iface_index; i++) { 1295 iface = usbd_get_iface(udev, i); 1296 if (iface == NULL) { 1297 /* looks like the end of the USB interfaces */ 1298 break; 1299 } 1300 usb_detach_device_sub(udev, &iface->subdev, 1301 &iface->pnpinfo, flag); 1302 } 1303 } 1304 1305 /*------------------------------------------------------------------------* 1306 * usb_probe_and_attach_sub 1307 * 1308 * Returns: 1309 * 0: Success 1310 * Else: Failure 1311 *------------------------------------------------------------------------*/ 1312 static uint8_t 1313 usb_probe_and_attach_sub(struct usb_device *udev, 1314 struct usb_attach_arg *uaa) 1315 { 1316 struct usb_interface *iface; 1317 device_t dev; 1318 int err; 1319 1320 iface = uaa->iface; 1321 if (iface->parent_iface_index != USB_IFACE_INDEX_ANY) { 1322 /* leave interface alone */ 1323 return (0); 1324 } 1325 dev = iface->subdev; 1326 if (dev) { 1327 /* clean up after module unload */ 1328 1329 if (device_is_attached(dev)) { 1330 /* already a device there */ 1331 return (0); 1332 } 1333 /* clear "iface->subdev" as early as possible */ 1334 1335 iface->subdev = NULL; 1336 1337 if (device_delete_child(udev->parent_dev, dev)) { 1338 /* 1339 * Panic here, else one can get a double call 1340 * to device_detach(). USB devices should 1341 * never fail on detach! 1342 */ 1343 panic("device_delete_child() failed\n"); 1344 } 1345 } 1346 if (uaa->temp_dev == NULL) { 1347 /* create a new child */ 1348 uaa->temp_dev = device_add_child(udev->parent_dev, NULL, -1); 1349 if (uaa->temp_dev == NULL) { 1350 device_printf(udev->parent_dev, 1351 "Device creation failed\n"); 1352 return (1); /* failure */ 1353 } 1354 device_set_ivars(uaa->temp_dev, uaa); 1355 device_quiet(uaa->temp_dev); 1356 } 1357 /* 1358 * Set "subdev" before probe and attach so that "devd" gets 1359 * the information it needs. 1360 */ 1361 iface->subdev = uaa->temp_dev; 1362 1363 if (device_probe_and_attach(iface->subdev) == 0) { 1364 /* 1365 * The USB attach arguments are only available during probe 1366 * and attach ! 1367 */ 1368 uaa->temp_dev = NULL; 1369 device_set_ivars(iface->subdev, NULL); 1370 1371 if (udev->flags.peer_suspended) { 1372 err = DEVICE_SUSPEND(iface->subdev); 1373 if (err) 1374 device_printf(iface->subdev, "Suspend failed\n"); 1375 } 1376 return (0); /* success */ 1377 } else { 1378 /* No USB driver found */ 1379 iface->subdev = NULL; 1380 } 1381 return (1); /* failure */ 1382 } 1383 1384 /*------------------------------------------------------------------------* 1385 * usbd_set_parent_iface 1386 * 1387 * Using this function will lock the alternate interface setting on an 1388 * interface. It is typically used for multi interface drivers. In USB 1389 * device side mode it is assumed that the alternate interfaces all 1390 * have the same endpoint descriptors. The default parent index value 1391 * is "USB_IFACE_INDEX_ANY". Then the alternate setting value is not 1392 * locked. 1393 *------------------------------------------------------------------------*/ 1394 void 1395 usbd_set_parent_iface(struct usb_device *udev, uint8_t iface_index, 1396 uint8_t parent_index) 1397 { 1398 struct usb_interface *iface; 1399 1400 if (udev == NULL || iface_index == parent_index) { 1401 /* nothing to do */ 1402 return; 1403 } 1404 iface = usbd_get_iface(udev, iface_index); 1405 if (iface != NULL) 1406 iface->parent_iface_index = parent_index; 1407 } 1408 1409 static void 1410 usb_init_attach_arg(struct usb_device *udev, 1411 struct usb_attach_arg *uaa) 1412 { 1413 memset(uaa, 0, sizeof(*uaa)); 1414 1415 uaa->device = udev; 1416 uaa->usb_mode = udev->flags.usb_mode; 1417 uaa->port = udev->port_no; 1418 uaa->dev_state = UAA_DEV_READY; 1419 1420 uaa->info.idVendor = UGETW(udev->ddesc.idVendor); 1421 uaa->info.idProduct = UGETW(udev->ddesc.idProduct); 1422 uaa->info.bcdDevice = UGETW(udev->ddesc.bcdDevice); 1423 uaa->info.bDeviceClass = udev->ddesc.bDeviceClass; 1424 uaa->info.bDeviceSubClass = udev->ddesc.bDeviceSubClass; 1425 uaa->info.bDeviceProtocol = udev->ddesc.bDeviceProtocol; 1426 uaa->info.bConfigIndex = udev->curr_config_index; 1427 uaa->info.bConfigNum = udev->curr_config_no; 1428 } 1429 1430 /*------------------------------------------------------------------------* 1431 * usb_probe_and_attach 1432 * 1433 * This function is called from "uhub_explore_sub()", 1434 * "usb_handle_set_config()" and "usb_handle_request()". 1435 * 1436 * Returns: 1437 * 0: Success 1438 * Else: A control transfer failed 1439 *------------------------------------------------------------------------*/ 1440 usb_error_t 1441 usb_probe_and_attach(struct usb_device *udev, uint8_t iface_index) 1442 { 1443 struct usb_attach_arg uaa; 1444 struct usb_interface *iface; 1445 uint8_t i; 1446 uint8_t j; 1447 uint8_t do_unlock; 1448 1449 if (udev == NULL) { 1450 DPRINTF("udev == NULL\n"); 1451 return (USB_ERR_INVAL); 1452 } 1453 /* Prevent re-enumeration */ 1454 do_unlock = usbd_enum_lock(udev); 1455 1456 if (udev->curr_config_index == USB_UNCONFIG_INDEX) { 1457 /* do nothing - no configuration has been set */ 1458 goto done; 1459 } 1460 /* setup USB attach arguments */ 1461 1462 usb_init_attach_arg(udev, &uaa); 1463 1464 /* 1465 * If the whole USB device is targeted, invoke the USB event 1466 * handler(s): 1467 */ 1468 if (iface_index == USB_IFACE_INDEX_ANY) { 1469 if (usb_test_quirk(&uaa, UQ_MSC_DYMO_EJECT) != 0 && 1470 usb_dymo_eject(udev, 0) == 0) { 1471 /* success, mark the udev as disappearing */ 1472 uaa.dev_state = UAA_DEV_EJECTING; 1473 } 1474 1475 EVENTHANDLER_INVOKE(usb_dev_configured, udev, &uaa); 1476 1477 if (uaa.dev_state != UAA_DEV_READY) { 1478 /* leave device unconfigured */ 1479 usb_unconfigure(udev, 0); 1480 goto done; 1481 } 1482 } 1483 1484 /* Check if only one interface should be probed: */ 1485 if (iface_index != USB_IFACE_INDEX_ANY) { 1486 i = iface_index; 1487 j = i + 1; 1488 } else { 1489 i = 0; 1490 j = USB_IFACE_MAX; 1491 } 1492 1493 /* Do the probe and attach */ 1494 for (; i != j; i++) { 1495 iface = usbd_get_iface(udev, i); 1496 if (iface == NULL) { 1497 /* 1498 * Looks like the end of the USB 1499 * interfaces ! 1500 */ 1501 DPRINTFN(2, "end of interfaces " 1502 "at %u\n", i); 1503 break; 1504 } 1505 if (iface->idesc == NULL) { 1506 /* no interface descriptor */ 1507 continue; 1508 } 1509 uaa.iface = iface; 1510 1511 uaa.info.bInterfaceClass = 1512 iface->idesc->bInterfaceClass; 1513 uaa.info.bInterfaceSubClass = 1514 iface->idesc->bInterfaceSubClass; 1515 uaa.info.bInterfaceProtocol = 1516 iface->idesc->bInterfaceProtocol; 1517 uaa.info.bIfaceIndex = i; 1518 uaa.info.bIfaceNum = 1519 iface->idesc->bInterfaceNumber; 1520 uaa.driver_info = 0; /* reset driver_info */ 1521 1522 DPRINTFN(2, "iclass=%u/%u/%u iindex=%u/%u\n", 1523 uaa.info.bInterfaceClass, 1524 uaa.info.bInterfaceSubClass, 1525 uaa.info.bInterfaceProtocol, 1526 uaa.info.bIfaceIndex, 1527 uaa.info.bIfaceNum); 1528 1529 usb_probe_and_attach_sub(udev, &uaa); 1530 1531 /* 1532 * Remove the leftover child, if any, to enforce that 1533 * a new nomatch devd event is generated for the next 1534 * interface if no driver is found: 1535 */ 1536 if (uaa.temp_dev == NULL) 1537 continue; 1538 if (device_delete_child(udev->parent_dev, uaa.temp_dev)) 1539 DPRINTFN(0, "device delete child failed\n"); 1540 uaa.temp_dev = NULL; 1541 } 1542 done: 1543 if (do_unlock) 1544 usbd_enum_unlock(udev); 1545 return (0); 1546 } 1547 1548 /*------------------------------------------------------------------------* 1549 * usb_suspend_resume_sub 1550 * 1551 * This function is called when the suspend or resume methods should 1552 * be executed on an USB device. 1553 *------------------------------------------------------------------------*/ 1554 static void 1555 usb_suspend_resume_sub(struct usb_device *udev, device_t dev, uint8_t do_suspend) 1556 { 1557 int err; 1558 1559 if (dev == NULL) { 1560 return; 1561 } 1562 if (!device_is_attached(dev)) { 1563 return; 1564 } 1565 if (do_suspend) { 1566 err = DEVICE_SUSPEND(dev); 1567 } else { 1568 err = DEVICE_RESUME(dev); 1569 } 1570 if (err) { 1571 device_printf(dev, "%s failed\n", 1572 do_suspend ? "Suspend" : "Resume"); 1573 } 1574 } 1575 1576 /*------------------------------------------------------------------------* 1577 * usb_suspend_resume 1578 * 1579 * The following function will suspend or resume the USB device. 1580 * 1581 * Returns: 1582 * 0: Success 1583 * Else: Failure 1584 *------------------------------------------------------------------------*/ 1585 usb_error_t 1586 usb_suspend_resume(struct usb_device *udev, uint8_t do_suspend) 1587 { 1588 struct usb_interface *iface; 1589 uint8_t i; 1590 1591 if (udev == NULL) { 1592 /* nothing to do */ 1593 return (0); 1594 } 1595 DPRINTFN(4, "udev=%p do_suspend=%d\n", udev, do_suspend); 1596 1597 sx_assert(&udev->sr_sx, SA_LOCKED); 1598 1599 USB_BUS_LOCK(udev->bus); 1600 /* filter the suspend events */ 1601 if (udev->flags.peer_suspended == do_suspend) { 1602 USB_BUS_UNLOCK(udev->bus); 1603 /* nothing to do */ 1604 return (0); 1605 } 1606 udev->flags.peer_suspended = do_suspend; 1607 USB_BUS_UNLOCK(udev->bus); 1608 1609 /* do the suspend or resume */ 1610 1611 for (i = 0; i != USB_IFACE_MAX; i++) { 1612 iface = usbd_get_iface(udev, i); 1613 if (iface == NULL) { 1614 /* looks like the end of the USB interfaces */ 1615 break; 1616 } 1617 usb_suspend_resume_sub(udev, iface->subdev, do_suspend); 1618 } 1619 return (0); 1620 } 1621 1622 /*------------------------------------------------------------------------* 1623 * usbd_clear_stall_proc 1624 * 1625 * This function performs generic USB clear stall operations. 1626 *------------------------------------------------------------------------*/ 1627 static void 1628 usbd_clear_stall_proc(struct usb_proc_msg *_pm) 1629 { 1630 struct usb_udev_msg *pm = (void *)_pm; 1631 struct usb_device *udev = pm->udev; 1632 1633 /* Change lock */ 1634 USB_BUS_UNLOCK(udev->bus); 1635 USB_MTX_LOCK(&udev->device_mtx); 1636 1637 /* Start clear stall callback */ 1638 usbd_transfer_start(udev->ctrl_xfer[1]); 1639 1640 /* Change lock */ 1641 USB_MTX_UNLOCK(&udev->device_mtx); 1642 USB_BUS_LOCK(udev->bus); 1643 } 1644 1645 /*------------------------------------------------------------------------* 1646 * usb_get_langid 1647 * 1648 * This function tries to figure out the USB string language to use. 1649 *------------------------------------------------------------------------*/ 1650 void 1651 usb_get_langid(struct usb_device *udev) 1652 { 1653 uint8_t *scratch_ptr; 1654 uint8_t do_unlock; 1655 int err; 1656 1657 /* 1658 * Workaround for buggy USB devices. 1659 * 1660 * It appears that some string-less USB chips will crash and 1661 * disappear if any attempts are made to read any string 1662 * descriptors. 1663 * 1664 * Try to detect such chips by checking the strings in the USB 1665 * device descriptor. If no strings are present there we 1666 * simply disable all USB strings. 1667 */ 1668 1669 /* Protect scratch area */ 1670 do_unlock = usbd_ctrl_lock(udev); 1671 1672 scratch_ptr = udev->scratch.data; 1673 1674 if (udev->flags.no_strings) { 1675 err = USB_ERR_INVAL; 1676 } else if (udev->ddesc.iManufacturer || 1677 udev->ddesc.iProduct || 1678 udev->ddesc.iSerialNumber) { 1679 /* read out the language ID string */ 1680 err = usbd_req_get_string_desc(udev, NULL, 1681 (char *)scratch_ptr, 4, 0, USB_LANGUAGE_TABLE); 1682 } else { 1683 err = USB_ERR_INVAL; 1684 } 1685 1686 if (err || (scratch_ptr[0] < 4)) { 1687 udev->flags.no_strings = 1; 1688 } else { 1689 uint16_t langid; 1690 uint16_t pref; 1691 uint16_t mask; 1692 uint8_t x; 1693 1694 /* load preferred value and mask */ 1695 pref = usb_lang_id; 1696 mask = usb_lang_mask; 1697 1698 /* align length correctly */ 1699 scratch_ptr[0] &= ~1U; 1700 1701 /* fix compiler warning */ 1702 langid = 0; 1703 1704 /* search for preferred language */ 1705 for (x = 2; x < scratch_ptr[0]; x += 2) { 1706 langid = UGETW(scratch_ptr + x); 1707 if ((langid & mask) == pref) 1708 break; 1709 } 1710 if (x >= scratch_ptr[0]) { 1711 /* pick the first language as the default */ 1712 DPRINTFN(1, "Using first language\n"); 1713 langid = UGETW(scratch_ptr + 2); 1714 } 1715 1716 DPRINTFN(1, "Language selected: 0x%04x\n", langid); 1717 udev->langid = langid; 1718 } 1719 1720 if (do_unlock) 1721 usbd_ctrl_unlock(udev); 1722 } 1723 1724 /*------------------------------------------------------------------------* 1725 * usb_alloc_device 1726 * 1727 * This function allocates a new USB device. This function is called 1728 * when a new device has been put in the powered state, but not yet in 1729 * the addressed state. Get initial descriptor, set the address, get 1730 * full descriptor and get strings. 1731 * 1732 * Return values: 1733 * 0: Failure 1734 * Else: Success 1735 *------------------------------------------------------------------------*/ 1736 struct usb_device * 1737 usb_alloc_device(device_t parent_dev, struct usb_bus *bus, 1738 struct usb_device *parent_hub, uint8_t depth, uint8_t port_index, 1739 uint8_t port_no, enum usb_dev_speed speed, enum usb_hc_mode mode) 1740 { 1741 struct usb_attach_arg uaa; 1742 struct usb_device *udev; 1743 struct usb_device *adev; 1744 struct usb_device *hub; 1745 usb_error_t err; 1746 uint8_t device_index; 1747 uint8_t config_index; 1748 uint8_t config_quirk; 1749 uint8_t set_config_failed; 1750 1751 DPRINTF("parent_dev=%p, bus=%p, parent_hub=%p, depth=%u, " 1752 "port_index=%u, port_no=%u, speed=%u, usb_mode=%u\n", 1753 parent_dev, bus, parent_hub, depth, port_index, port_no, 1754 speed, mode); 1755 1756 /* 1757 * Find an unused device index. In USB Host mode this is the 1758 * same as the device address. 1759 * 1760 * Device index zero is not used and device index 1 should 1761 * always be the root hub. 1762 */ 1763 for (device_index = USB_ROOT_HUB_ADDR; 1764 (device_index != bus->devices_max) && 1765 (bus->devices[device_index] != NULL); 1766 device_index++) /* nop */; 1767 1768 if (device_index == bus->devices_max) { 1769 device_printf(bus->bdev, 1770 "No free USB device index for new device\n"); 1771 return (NULL); 1772 } 1773 1774 if (depth > 0x10) { 1775 device_printf(bus->bdev, 1776 "Invalid device depth\n"); 1777 return (NULL); 1778 } 1779 udev = malloc(sizeof(*udev), M_USB, M_WAITOK | M_ZERO); 1780 #if (USB_HAVE_MALLOC_WAITOK == 0) 1781 if (udev == NULL) { 1782 return (NULL); 1783 } 1784 #endif 1785 /* initialise our SX-lock */ 1786 sx_init_flags(&udev->enum_sx, "USB config SX lock", SX_DUPOK); 1787 sx_init_flags(&udev->sr_sx, "USB suspend and resume SX lock", SX_NOWITNESS); 1788 sx_init_flags(&udev->ctrl_sx, "USB control transfer SX lock", SX_DUPOK); 1789 1790 cv_init(&udev->ctrlreq_cv, "WCTRL"); 1791 cv_init(&udev->ref_cv, "UGONE"); 1792 1793 /* initialise our mutex */ 1794 mtx_init(&udev->device_mtx, "USB device mutex", NULL, MTX_DEF); 1795 1796 /* initialise generic clear stall */ 1797 udev->cs_msg[0].hdr.pm_callback = &usbd_clear_stall_proc; 1798 udev->cs_msg[0].udev = udev; 1799 udev->cs_msg[1].hdr.pm_callback = &usbd_clear_stall_proc; 1800 udev->cs_msg[1].udev = udev; 1801 1802 /* initialise some USB device fields */ 1803 udev->parent_hub = parent_hub; 1804 udev->parent_dev = parent_dev; 1805 udev->port_index = port_index; 1806 udev->port_no = port_no; 1807 udev->depth = depth; 1808 udev->bus = bus; 1809 udev->address = USB_START_ADDR; /* default value */ 1810 udev->plugtime = (usb_ticks_t)ticks; 1811 /* 1812 * We need to force the power mode to "on" because there are plenty 1813 * of USB devices out there that do not work very well with 1814 * automatic suspend and resume! 1815 */ 1816 udev->power_mode = usbd_filter_power_mode(udev, USB_POWER_MODE_ON); 1817 udev->pwr_save.last_xfer_time = ticks; 1818 /* we are not ready yet */ 1819 udev->refcount = 1; 1820 1821 /* set up default endpoint descriptor */ 1822 udev->ctrl_ep_desc.bLength = sizeof(udev->ctrl_ep_desc); 1823 udev->ctrl_ep_desc.bDescriptorType = UDESC_ENDPOINT; 1824 udev->ctrl_ep_desc.bEndpointAddress = USB_CONTROL_ENDPOINT; 1825 udev->ctrl_ep_desc.bmAttributes = UE_CONTROL; 1826 udev->ctrl_ep_desc.wMaxPacketSize[0] = USB_MAX_IPACKET; 1827 udev->ctrl_ep_desc.wMaxPacketSize[1] = 0; 1828 udev->ctrl_ep_desc.bInterval = 0; 1829 1830 /* set up default endpoint companion descriptor */ 1831 udev->ctrl_ep_comp_desc.bLength = sizeof(udev->ctrl_ep_comp_desc); 1832 udev->ctrl_ep_comp_desc.bDescriptorType = UDESC_ENDPOINT_SS_COMP; 1833 1834 udev->ddesc.bMaxPacketSize = USB_MAX_IPACKET; 1835 1836 udev->speed = speed; 1837 udev->flags.usb_mode = mode; 1838 1839 /* search for our High Speed USB HUB, if any */ 1840 1841 adev = udev; 1842 hub = udev->parent_hub; 1843 1844 while (hub) { 1845 if (hub->speed == USB_SPEED_HIGH) { 1846 udev->hs_hub_addr = hub->address; 1847 udev->parent_hs_hub = hub; 1848 udev->hs_port_no = adev->port_no; 1849 break; 1850 } 1851 adev = hub; 1852 hub = hub->parent_hub; 1853 } 1854 1855 /* init the default endpoint */ 1856 usb_init_endpoint(udev, 0, 1857 &udev->ctrl_ep_desc, 1858 &udev->ctrl_ep_comp_desc, 1859 &udev->ctrl_ep); 1860 1861 /* set device index */ 1862 udev->device_index = device_index; 1863 1864 #if USB_HAVE_UGEN 1865 /* Create ugen name */ 1866 snprintf(udev->ugen_name, sizeof(udev->ugen_name), 1867 USB_GENERIC_NAME "%u.%u", device_get_unit(bus->bdev), 1868 device_index); 1869 LIST_INIT(&udev->pd_list); 1870 1871 /* Create the control endpoint device */ 1872 udev->ctrl_dev = usb_make_dev(udev, NULL, 0, 0, 1873 FREAD|FWRITE, UID_ROOT, GID_OPERATOR, 0600); 1874 1875 /* Create a link from /dev/ugenX.X to the default endpoint */ 1876 if (udev->ctrl_dev != NULL) 1877 make_dev_alias(udev->ctrl_dev->cdev, "%s", udev->ugen_name); 1878 #endif 1879 /* Initialise device */ 1880 if (bus->methods->device_init != NULL) { 1881 err = (bus->methods->device_init) (udev); 1882 if (err != 0) { 1883 DPRINTFN(0, "device init %d failed " 1884 "(%s, ignored)\n", device_index, 1885 usbd_errstr(err)); 1886 goto done; 1887 } 1888 } 1889 /* set powered device state after device init is complete */ 1890 usb_set_device_state(udev, USB_STATE_POWERED); 1891 1892 if (udev->flags.usb_mode == USB_MODE_HOST) { 1893 err = usbd_req_set_address(udev, NULL, device_index); 1894 1895 /* 1896 * This is the new USB device address from now on, if 1897 * the set address request didn't set it already. 1898 */ 1899 if (udev->address == USB_START_ADDR) 1900 udev->address = device_index; 1901 1902 /* 1903 * We ignore any set-address errors, hence there are 1904 * buggy USB devices out there that actually receive 1905 * the SETUP PID, but manage to set the address before 1906 * the STATUS stage is ACK'ed. If the device responds 1907 * to the subsequent get-descriptor at the new 1908 * address, then we know that the set-address command 1909 * was successful. 1910 */ 1911 if (err) { 1912 DPRINTFN(0, "set address %d failed " 1913 "(%s, ignored)\n", udev->address, 1914 usbd_errstr(err)); 1915 } 1916 } else { 1917 /* We are not self powered */ 1918 udev->flags.self_powered = 0; 1919 1920 /* Set unconfigured state */ 1921 udev->curr_config_no = USB_UNCONFIG_NO; 1922 udev->curr_config_index = USB_UNCONFIG_INDEX; 1923 1924 /* Setup USB descriptors */ 1925 err = (usb_temp_setup_by_index_p) (udev, usb_template); 1926 if (err) { 1927 DPRINTFN(0, "setting up USB template failed - " 1928 "usb_template(4) not loaded?\n"); 1929 goto done; 1930 } 1931 } 1932 usb_set_device_state(udev, USB_STATE_ADDRESSED); 1933 1934 /* setup the device descriptor and the initial "wMaxPacketSize" */ 1935 err = usbd_setup_device_desc(udev, NULL); 1936 1937 if (err != 0) { 1938 /* try to enumerate two more times */ 1939 err = usbd_req_re_enumerate(udev, NULL); 1940 if (err != 0) { 1941 err = usbd_req_re_enumerate(udev, NULL); 1942 if (err != 0) { 1943 goto done; 1944 } 1945 } 1946 } 1947 1948 /* 1949 * Setup temporary USB attach args so that we can figure out some 1950 * basic quirks for this device. 1951 */ 1952 usb_init_attach_arg(udev, &uaa); 1953 1954 if (usb_test_quirk(&uaa, UQ_BUS_POWERED)) { 1955 udev->flags.uq_bus_powered = 1; 1956 } 1957 if (usb_test_quirk(&uaa, UQ_NO_STRINGS)) { 1958 udev->flags.no_strings = 1; 1959 } 1960 1961 usb_get_langid(udev); 1962 1963 /* assume 100mA bus powered for now. Changed when configured. */ 1964 udev->power = USB_MIN_POWER; 1965 /* fetch the vendor and product strings from the device */ 1966 usb_set_device_strings(udev); 1967 1968 if (udev->flags.usb_mode == USB_MODE_DEVICE) { 1969 /* USB device mode setup is complete */ 1970 err = 0; 1971 goto config_done; 1972 } 1973 1974 /* 1975 * Most USB devices should attach to config index 0 by 1976 * default 1977 */ 1978 if (usb_test_quirk(&uaa, UQ_CFG_INDEX_0)) { 1979 config_index = 0; 1980 config_quirk = 1; 1981 } else if (usb_test_quirk(&uaa, UQ_CFG_INDEX_1)) { 1982 config_index = 1; 1983 config_quirk = 1; 1984 } else if (usb_test_quirk(&uaa, UQ_CFG_INDEX_2)) { 1985 config_index = 2; 1986 config_quirk = 1; 1987 } else if (usb_test_quirk(&uaa, UQ_CFG_INDEX_3)) { 1988 config_index = 3; 1989 config_quirk = 1; 1990 } else if (usb_test_quirk(&uaa, UQ_CFG_INDEX_4)) { 1991 config_index = 4; 1992 config_quirk = 1; 1993 } else { 1994 config_index = 0; 1995 config_quirk = 0; 1996 } 1997 1998 set_config_failed = 0; 1999 repeat_set_config: 2000 2001 DPRINTF("setting config %u\n", config_index); 2002 2003 /* get the USB device configured */ 2004 err = usbd_set_config_index(udev, config_index); 2005 if (err) { 2006 if (udev->ddesc.bNumConfigurations != 0) { 2007 if (!set_config_failed) { 2008 set_config_failed = 1; 2009 /* XXX try to re-enumerate the device */ 2010 err = usbd_req_re_enumerate(udev, NULL); 2011 if (err == 0) 2012 goto repeat_set_config; 2013 } 2014 DPRINTFN(0, "Failure selecting configuration index %u:" 2015 "%s, port %u, addr %u (ignored)\n", 2016 config_index, usbd_errstr(err), udev->port_no, 2017 udev->address); 2018 } 2019 /* 2020 * Some USB devices do not have any configurations. Ignore any 2021 * set config failures! 2022 */ 2023 err = 0; 2024 goto config_done; 2025 } 2026 if (!config_quirk && config_index + 1 < udev->ddesc.bNumConfigurations) { 2027 if ((udev->cdesc->bNumInterface < 2) && 2028 usbd_get_no_descriptors(udev->cdesc, UDESC_ENDPOINT) == 0) { 2029 DPRINTFN(0, "Found no endpoints, trying next config\n"); 2030 config_index++; 2031 goto repeat_set_config; 2032 } 2033 #if USB_HAVE_MSCTEST 2034 if (config_index == 0) { 2035 /* 2036 * Try to figure out if we have an 2037 * auto-install disk there: 2038 */ 2039 if (usb_iface_is_cdrom(udev, 0)) { 2040 DPRINTFN(0, "Found possible auto-install " 2041 "disk (trying next config)\n"); 2042 config_index++; 2043 goto repeat_set_config; 2044 } 2045 } 2046 #endif 2047 } 2048 #if USB_HAVE_MSCTEST 2049 if (set_config_failed == 0 && config_index == 0 && 2050 usb_test_quirk(&uaa, UQ_MSC_NO_SYNC_CACHE) == 0 && 2051 usb_test_quirk(&uaa, UQ_MSC_NO_GETMAXLUN) == 0) { 2052 /* 2053 * Try to figure out if there are any MSC quirks we 2054 * should apply automatically: 2055 */ 2056 err = usb_msc_auto_quirk(udev, 0); 2057 2058 if (err != 0) { 2059 set_config_failed = 1; 2060 goto repeat_set_config; 2061 } 2062 } 2063 #endif 2064 2065 config_done: 2066 DPRINTF("new dev (addr %d), udev=%p, parent_hub=%p\n", 2067 udev->address, udev, udev->parent_hub); 2068 2069 /* register our device - we are ready */ 2070 usb_bus_port_set_device(bus, parent_hub ? 2071 parent_hub->hub->ports + port_index : NULL, udev, device_index); 2072 2073 #if USB_HAVE_UGEN 2074 /* Symlink the ugen device name */ 2075 udev->ugen_symlink = usb_alloc_symlink(udev->ugen_name); 2076 2077 /* Announce device */ 2078 printf("%s: <%s %s> at %s\n", udev->ugen_name, 2079 usb_get_manufacturer(udev), usb_get_product(udev), 2080 device_get_nameunit(udev->bus->bdev)); 2081 #endif 2082 2083 #if USB_HAVE_DEVCTL 2084 usb_notify_addq("ATTACH", udev); 2085 #endif 2086 done: 2087 if (err) { 2088 /* 2089 * Free USB device and all subdevices, if any. 2090 */ 2091 usb_free_device(udev, 0); 2092 udev = NULL; 2093 } 2094 return (udev); 2095 } 2096 2097 #if USB_HAVE_UGEN 2098 struct usb_fs_privdata * 2099 usb_make_dev(struct usb_device *udev, const char *devname, int ep, 2100 int fi, int rwmode, uid_t uid, gid_t gid, int mode) 2101 { 2102 struct usb_fs_privdata* pd; 2103 struct make_dev_args args; 2104 char buffer[32]; 2105 2106 /* Store information to locate ourselves again later */ 2107 pd = malloc(sizeof(struct usb_fs_privdata), M_USBDEV, 2108 M_WAITOK | M_ZERO); 2109 pd->bus_index = device_get_unit(udev->bus->bdev); 2110 pd->dev_index = udev->device_index; 2111 pd->ep_addr = ep; 2112 pd->fifo_index = fi; 2113 pd->mode = rwmode; 2114 2115 /* Now, create the device itself */ 2116 if (devname == NULL) { 2117 devname = buffer; 2118 snprintf(buffer, sizeof(buffer), USB_DEVICE_DIR "/%u.%u.%u", 2119 pd->bus_index, pd->dev_index, pd->ep_addr); 2120 } 2121 2122 /* Setup arguments for make_dev_s() */ 2123 make_dev_args_init(&args); 2124 args.mda_devsw = &usb_devsw; 2125 args.mda_uid = uid; 2126 args.mda_gid = gid; 2127 args.mda_mode = mode; 2128 args.mda_si_drv1 = pd; 2129 2130 if (make_dev_s(&args, &pd->cdev, "%s", devname) != 0) { 2131 DPRINTFN(0, "Failed to create device %s\n", devname); 2132 free(pd, M_USBDEV); 2133 return (NULL); 2134 } 2135 return (pd); 2136 } 2137 2138 void 2139 usb_destroy_dev_sync(struct usb_fs_privdata *pd) 2140 { 2141 DPRINTFN(1, "Destroying device at ugen%d.%d\n", 2142 pd->bus_index, pd->dev_index); 2143 2144 /* 2145 * Destroy character device synchronously. After this 2146 * all system calls are returned. Can block. 2147 */ 2148 destroy_dev(pd->cdev); 2149 2150 free(pd, M_USBDEV); 2151 } 2152 2153 void 2154 usb_destroy_dev(struct usb_fs_privdata *pd) 2155 { 2156 struct usb_bus *bus; 2157 2158 if (pd == NULL) 2159 return; 2160 2161 mtx_lock(&usb_ref_lock); 2162 bus = devclass_get_softc(usb_devclass_ptr, pd->bus_index); 2163 mtx_unlock(&usb_ref_lock); 2164 2165 if (bus == NULL) { 2166 usb_destroy_dev_sync(pd); 2167 return; 2168 } 2169 2170 /* make sure we can re-use the device name */ 2171 delist_dev(pd->cdev); 2172 2173 USB_BUS_LOCK(bus); 2174 LIST_INSERT_HEAD(&bus->pd_cleanup_list, pd, pd_next); 2175 /* get cleanup going */ 2176 usb_proc_msignal(USB_BUS_EXPLORE_PROC(bus), 2177 &bus->cleanup_msg[0], &bus->cleanup_msg[1]); 2178 USB_BUS_UNLOCK(bus); 2179 } 2180 2181 static void 2182 usb_cdev_create(struct usb_device *udev) 2183 { 2184 struct usb_config_descriptor *cd; 2185 struct usb_endpoint_descriptor *ed; 2186 struct usb_descriptor *desc; 2187 struct usb_fs_privdata* pd; 2188 int inmode, outmode, inmask, outmask, mode; 2189 uint8_t ep; 2190 2191 KASSERT(LIST_FIRST(&udev->pd_list) == NULL, ("stale cdev entries")); 2192 2193 DPRINTFN(2, "Creating device nodes\n"); 2194 2195 if (usbd_get_mode(udev) == USB_MODE_DEVICE) { 2196 inmode = FWRITE; 2197 outmode = FREAD; 2198 } else { /* USB_MODE_HOST */ 2199 inmode = FREAD; 2200 outmode = FWRITE; 2201 } 2202 2203 inmask = 0; 2204 outmask = 0; 2205 desc = NULL; 2206 2207 /* 2208 * Collect all used endpoint numbers instead of just 2209 * generating 16 static endpoints. 2210 */ 2211 cd = usbd_get_config_descriptor(udev); 2212 while ((desc = usb_desc_foreach(cd, desc))) { 2213 /* filter out all endpoint descriptors */ 2214 if ((desc->bDescriptorType == UDESC_ENDPOINT) && 2215 (desc->bLength >= sizeof(*ed))) { 2216 ed = (struct usb_endpoint_descriptor *)desc; 2217 2218 /* update masks */ 2219 ep = ed->bEndpointAddress; 2220 if (UE_GET_DIR(ep) == UE_DIR_OUT) 2221 outmask |= 1 << UE_GET_ADDR(ep); 2222 else 2223 inmask |= 1 << UE_GET_ADDR(ep); 2224 } 2225 } 2226 2227 /* Create all available endpoints except EP0 */ 2228 for (ep = 1; ep < 16; ep++) { 2229 mode = (inmask & (1 << ep)) ? inmode : 0; 2230 mode |= (outmask & (1 << ep)) ? outmode : 0; 2231 if (mode == 0) 2232 continue; /* no IN or OUT endpoint */ 2233 2234 pd = usb_make_dev(udev, NULL, ep, 0, 2235 mode, UID_ROOT, GID_OPERATOR, 0600); 2236 2237 if (pd != NULL) 2238 LIST_INSERT_HEAD(&udev->pd_list, pd, pd_next); 2239 } 2240 } 2241 2242 static void 2243 usb_cdev_free(struct usb_device *udev) 2244 { 2245 struct usb_fs_privdata* pd; 2246 2247 DPRINTFN(2, "Freeing device nodes\n"); 2248 2249 while ((pd = LIST_FIRST(&udev->pd_list)) != NULL) { 2250 KASSERT(pd->cdev->si_drv1 == pd, ("privdata corrupt")); 2251 2252 LIST_REMOVE(pd, pd_next); 2253 2254 usb_destroy_dev(pd); 2255 } 2256 } 2257 #endif 2258 2259 /*------------------------------------------------------------------------* 2260 * usb_free_device 2261 * 2262 * This function is NULL safe and will free an USB device and its 2263 * children devices, if any. 2264 * 2265 * Flag values: Reserved, set to zero. 2266 *------------------------------------------------------------------------*/ 2267 void 2268 usb_free_device(struct usb_device *udev, uint8_t flag) 2269 { 2270 struct usb_bus *bus; 2271 2272 if (udev == NULL) 2273 return; /* already freed */ 2274 2275 DPRINTFN(4, "udev=%p port=%d\n", udev, udev->port_no); 2276 2277 bus = udev->bus; 2278 2279 /* set DETACHED state to prevent any further references */ 2280 usb_set_device_state(udev, USB_STATE_DETACHED); 2281 2282 #if USB_HAVE_DEVCTL 2283 usb_notify_addq("DETACH", udev); 2284 #endif 2285 2286 #if USB_HAVE_UGEN 2287 if (!rebooting) { 2288 printf("%s: <%s %s> at %s (disconnected)\n", udev->ugen_name, 2289 usb_get_manufacturer(udev), usb_get_product(udev), 2290 device_get_nameunit(bus->bdev)); 2291 } 2292 2293 /* Destroy UGEN symlink, if any */ 2294 if (udev->ugen_symlink) { 2295 usb_free_symlink(udev->ugen_symlink); 2296 udev->ugen_symlink = NULL; 2297 } 2298 2299 usb_destroy_dev(udev->ctrl_dev); 2300 #endif 2301 2302 if (udev->flags.usb_mode == USB_MODE_DEVICE) { 2303 /* stop receiving any control transfers (Device Side Mode) */ 2304 usbd_transfer_unsetup(udev->ctrl_xfer, USB_CTRL_XFER_MAX); 2305 } 2306 2307 /* the following will get the device unconfigured in software */ 2308 usb_unconfigure(udev, USB_UNCFG_FLAG_FREE_EP0); 2309 2310 /* final device unregister after all character devices are closed */ 2311 usb_bus_port_set_device(bus, udev->parent_hub ? 2312 udev->parent_hub->hub->ports + udev->port_index : NULL, 2313 NULL, USB_ROOT_HUB_ADDR); 2314 2315 /* unsetup any leftover default USB transfers */ 2316 usbd_transfer_unsetup(udev->ctrl_xfer, USB_CTRL_XFER_MAX); 2317 2318 /* template unsetup, if any */ 2319 (usb_temp_unsetup_p) (udev); 2320 2321 /* 2322 * Make sure that our clear-stall messages are not queued 2323 * anywhere: 2324 */ 2325 USB_BUS_LOCK(udev->bus); 2326 usb_proc_mwait(USB_BUS_CS_PROC(udev->bus), 2327 &udev->cs_msg[0], &udev->cs_msg[1]); 2328 USB_BUS_UNLOCK(udev->bus); 2329 2330 /* wait for all references to go away */ 2331 usb_wait_pending_refs(udev); 2332 2333 sx_destroy(&udev->enum_sx); 2334 sx_destroy(&udev->sr_sx); 2335 sx_destroy(&udev->ctrl_sx); 2336 2337 cv_destroy(&udev->ctrlreq_cv); 2338 cv_destroy(&udev->ref_cv); 2339 2340 mtx_destroy(&udev->device_mtx); 2341 #if USB_HAVE_UGEN 2342 KASSERT(LIST_FIRST(&udev->pd_list) == NULL, ("leaked cdev entries")); 2343 #endif 2344 2345 /* Uninitialise device */ 2346 if (bus->methods->device_uninit != NULL) 2347 (bus->methods->device_uninit) (udev); 2348 2349 /* free device */ 2350 free(udev->serial, M_USB); 2351 free(udev->manufacturer, M_USB); 2352 free(udev->product, M_USB); 2353 free(udev, M_USB); 2354 } 2355 2356 /*------------------------------------------------------------------------* 2357 * usbd_get_iface 2358 * 2359 * This function is the safe way to get the USB interface structure 2360 * pointer by interface index. 2361 * 2362 * Return values: 2363 * NULL: Interface not present. 2364 * Else: Pointer to USB interface structure. 2365 *------------------------------------------------------------------------*/ 2366 struct usb_interface * 2367 usbd_get_iface(struct usb_device *udev, uint8_t iface_index) 2368 { 2369 struct usb_interface *iface = udev->ifaces + iface_index; 2370 2371 if (iface_index >= udev->ifaces_max) 2372 return (NULL); 2373 return (iface); 2374 } 2375 2376 /*------------------------------------------------------------------------* 2377 * usbd_find_descriptor 2378 * 2379 * This function will lookup the first descriptor that matches the 2380 * criteria given by the arguments "type" and "subtype". Descriptors 2381 * will only be searched within the interface having the index 2382 * "iface_index". If the "id" argument points to an USB descriptor, 2383 * it will be skipped before the search is started. This allows 2384 * searching for multiple descriptors using the same criteria. Else 2385 * the search is started after the interface descriptor. 2386 * 2387 * Return values: 2388 * NULL: End of descriptors 2389 * Else: A descriptor matching the criteria 2390 *------------------------------------------------------------------------*/ 2391 void * 2392 usbd_find_descriptor(struct usb_device *udev, void *id, uint8_t iface_index, 2393 uint8_t type, uint8_t type_mask, 2394 uint8_t subtype, uint8_t subtype_mask) 2395 { 2396 struct usb_descriptor *desc; 2397 struct usb_config_descriptor *cd; 2398 struct usb_interface *iface; 2399 2400 cd = usbd_get_config_descriptor(udev); 2401 if (cd == NULL) { 2402 return (NULL); 2403 } 2404 if (id == NULL) { 2405 iface = usbd_get_iface(udev, iface_index); 2406 if (iface == NULL) { 2407 return (NULL); 2408 } 2409 id = usbd_get_interface_descriptor(iface); 2410 if (id == NULL) { 2411 return (NULL); 2412 } 2413 } 2414 desc = (void *)id; 2415 2416 while ((desc = usb_desc_foreach(cd, desc))) { 2417 if (desc->bDescriptorType == UDESC_INTERFACE) { 2418 break; 2419 } 2420 if (((desc->bDescriptorType & type_mask) == type) && 2421 ((desc->bDescriptorSubtype & subtype_mask) == subtype)) { 2422 return (desc); 2423 } 2424 } 2425 return (NULL); 2426 } 2427 2428 /*------------------------------------------------------------------------* 2429 * usb_devinfo 2430 * 2431 * This function will dump information from the device descriptor 2432 * belonging to the USB device pointed to by "udev", to the string 2433 * pointed to by "dst_ptr" having a maximum length of "dst_len" bytes 2434 * including the terminating zero. 2435 *------------------------------------------------------------------------*/ 2436 void 2437 usb_devinfo(struct usb_device *udev, char *dst_ptr, uint16_t dst_len) 2438 { 2439 struct usb_device_descriptor *udd = &udev->ddesc; 2440 uint16_t bcdDevice; 2441 uint16_t bcdUSB; 2442 2443 bcdUSB = UGETW(udd->bcdUSB); 2444 bcdDevice = UGETW(udd->bcdDevice); 2445 2446 if (udd->bDeviceClass != 0xFF) { 2447 snprintf(dst_ptr, dst_len, "%s %s, class %d/%d, rev %x.%02x/" 2448 "%x.%02x, addr %d", 2449 usb_get_manufacturer(udev), 2450 usb_get_product(udev), 2451 udd->bDeviceClass, udd->bDeviceSubClass, 2452 (bcdUSB >> 8), bcdUSB & 0xFF, 2453 (bcdDevice >> 8), bcdDevice & 0xFF, 2454 udev->address); 2455 } else { 2456 snprintf(dst_ptr, dst_len, "%s %s, rev %x.%02x/" 2457 "%x.%02x, addr %d", 2458 usb_get_manufacturer(udev), 2459 usb_get_product(udev), 2460 (bcdUSB >> 8), bcdUSB & 0xFF, 2461 (bcdDevice >> 8), bcdDevice & 0xFF, 2462 udev->address); 2463 } 2464 } 2465 2466 #ifdef USB_VERBOSE 2467 /* 2468 * Descriptions of of known vendors and devices ("products"). 2469 */ 2470 struct usb_knowndev { 2471 uint16_t vendor; 2472 uint16_t product; 2473 uint32_t flags; 2474 const char *vendorname; 2475 const char *productname; 2476 }; 2477 2478 #define USB_KNOWNDEV_NOPROD 0x01 /* match on vendor only */ 2479 2480 #include "usbdevs.h" 2481 #include "usbdevs_data.h" 2482 #endif /* USB_VERBOSE */ 2483 2484 void 2485 usb_set_device_strings(struct usb_device *udev) 2486 { 2487 struct usb_device_descriptor *udd = &udev->ddesc; 2488 #ifdef USB_VERBOSE 2489 const struct usb_knowndev *kdp; 2490 #endif 2491 char *temp_ptr; 2492 size_t temp_size; 2493 uint16_t vendor_id; 2494 uint16_t product_id; 2495 uint8_t do_unlock; 2496 2497 /* Protect scratch area */ 2498 do_unlock = usbd_ctrl_lock(udev); 2499 2500 temp_ptr = (char *)udev->scratch.data; 2501 temp_size = sizeof(udev->scratch.data); 2502 2503 vendor_id = UGETW(udd->idVendor); 2504 product_id = UGETW(udd->idProduct); 2505 2506 /* cleanup old strings, if any */ 2507 free(udev->serial, M_USB); 2508 free(udev->manufacturer, M_USB); 2509 free(udev->product, M_USB); 2510 2511 /* zero the string pointers */ 2512 udev->serial = NULL; 2513 udev->manufacturer = NULL; 2514 udev->product = NULL; 2515 2516 /* get serial number string */ 2517 usbd_req_get_string_any(udev, NULL, temp_ptr, temp_size, 2518 udev->ddesc.iSerialNumber); 2519 udev->serial = strdup(temp_ptr, M_USB); 2520 2521 /* get manufacturer string */ 2522 usbd_req_get_string_any(udev, NULL, temp_ptr, temp_size, 2523 udev->ddesc.iManufacturer); 2524 usb_trim_spaces(temp_ptr); 2525 if (temp_ptr[0] != '\0') 2526 udev->manufacturer = strdup(temp_ptr, M_USB); 2527 2528 /* get product string */ 2529 usbd_req_get_string_any(udev, NULL, temp_ptr, temp_size, 2530 udev->ddesc.iProduct); 2531 usb_trim_spaces(temp_ptr); 2532 if (temp_ptr[0] != '\0') 2533 udev->product = strdup(temp_ptr, M_USB); 2534 2535 #ifdef USB_VERBOSE 2536 if (udev->manufacturer == NULL || udev->product == NULL) { 2537 for (kdp = usb_knowndevs; kdp->vendorname != NULL; kdp++) { 2538 if (kdp->vendor == vendor_id && 2539 (kdp->product == product_id || 2540 (kdp->flags & USB_KNOWNDEV_NOPROD) != 0)) 2541 break; 2542 } 2543 if (kdp->vendorname != NULL) { 2544 /* XXX should use pointer to knowndevs string */ 2545 if (udev->manufacturer == NULL) { 2546 udev->manufacturer = strdup(kdp->vendorname, 2547 M_USB); 2548 } 2549 if (udev->product == NULL && 2550 (kdp->flags & USB_KNOWNDEV_NOPROD) == 0) { 2551 udev->product = strdup(kdp->productname, 2552 M_USB); 2553 } 2554 } 2555 } 2556 #endif 2557 /* Provide default strings if none were found */ 2558 if (udev->manufacturer == NULL) { 2559 snprintf(temp_ptr, temp_size, "vendor 0x%04x", vendor_id); 2560 udev->manufacturer = strdup(temp_ptr, M_USB); 2561 } 2562 if (udev->product == NULL) { 2563 snprintf(temp_ptr, temp_size, "product 0x%04x", product_id); 2564 udev->product = strdup(temp_ptr, M_USB); 2565 } 2566 2567 if (do_unlock) 2568 usbd_ctrl_unlock(udev); 2569 } 2570 2571 /* 2572 * Returns: 2573 * See: USB_MODE_XXX 2574 */ 2575 enum usb_hc_mode 2576 usbd_get_mode(struct usb_device *udev) 2577 { 2578 return (udev->flags.usb_mode); 2579 } 2580 2581 /* 2582 * Returns: 2583 * See: USB_SPEED_XXX 2584 */ 2585 enum usb_dev_speed 2586 usbd_get_speed(struct usb_device *udev) 2587 { 2588 return (udev->speed); 2589 } 2590 2591 uint32_t 2592 usbd_get_isoc_fps(struct usb_device *udev) 2593 { 2594 ; /* indent fix */ 2595 switch (udev->speed) { 2596 case USB_SPEED_LOW: 2597 case USB_SPEED_FULL: 2598 return (1000); 2599 default: 2600 return (8000); 2601 } 2602 } 2603 2604 struct usb_device_descriptor * 2605 usbd_get_device_descriptor(struct usb_device *udev) 2606 { 2607 if (udev == NULL) 2608 return (NULL); /* be NULL safe */ 2609 return (&udev->ddesc); 2610 } 2611 2612 struct usb_config_descriptor * 2613 usbd_get_config_descriptor(struct usb_device *udev) 2614 { 2615 if (udev == NULL) 2616 return (NULL); /* be NULL safe */ 2617 return (udev->cdesc); 2618 } 2619 2620 /*------------------------------------------------------------------------* 2621 * usb_test_quirk - test a device for a given quirk 2622 * 2623 * Return values: 2624 * 0: The USB device does not have the given quirk. 2625 * Else: The USB device has the given quirk. 2626 *------------------------------------------------------------------------*/ 2627 uint8_t 2628 usb_test_quirk(const struct usb_attach_arg *uaa, uint16_t quirk) 2629 { 2630 uint8_t found; 2631 uint8_t x; 2632 2633 if (quirk == UQ_NONE) 2634 return (0); 2635 2636 /* search the automatic per device quirks first */ 2637 2638 for (x = 0; x != USB_MAX_AUTO_QUIRK; x++) { 2639 if (uaa->device->autoQuirk[x] == quirk) 2640 return (1); 2641 } 2642 2643 /* search global quirk table, if any */ 2644 2645 found = (usb_test_quirk_p) (&uaa->info, quirk); 2646 2647 return (found); 2648 } 2649 2650 struct usb_interface_descriptor * 2651 usbd_get_interface_descriptor(struct usb_interface *iface) 2652 { 2653 if (iface == NULL) 2654 return (NULL); /* be NULL safe */ 2655 return (iface->idesc); 2656 } 2657 2658 uint8_t 2659 usbd_get_interface_altindex(struct usb_interface *iface) 2660 { 2661 return (iface->alt_index); 2662 } 2663 2664 uint8_t 2665 usbd_get_bus_index(struct usb_device *udev) 2666 { 2667 return ((uint8_t)device_get_unit(udev->bus->bdev)); 2668 } 2669 2670 uint8_t 2671 usbd_get_device_index(struct usb_device *udev) 2672 { 2673 return (udev->device_index); 2674 } 2675 2676 #if USB_HAVE_DEVCTL 2677 static void 2678 usb_notify_addq(const char *type, struct usb_device *udev) 2679 { 2680 struct usb_interface *iface; 2681 struct sbuf *sb; 2682 int i; 2683 2684 /* announce the device */ 2685 sb = sbuf_new_auto(); 2686 sbuf_printf(sb, 2687 #if USB_HAVE_UGEN 2688 "ugen=%s " 2689 "cdev=%s " 2690 #endif 2691 "vendor=0x%04x " 2692 "product=0x%04x " 2693 "devclass=0x%02x " 2694 "devsubclass=0x%02x " 2695 "sernum=\"%s\" " 2696 "release=0x%04x " 2697 "mode=%s " 2698 "port=%u " 2699 #if USB_HAVE_UGEN 2700 "parent=%s" 2701 #endif 2702 "", 2703 #if USB_HAVE_UGEN 2704 udev->ugen_name, 2705 udev->ugen_name, 2706 #endif 2707 UGETW(udev->ddesc.idVendor), 2708 UGETW(udev->ddesc.idProduct), 2709 udev->ddesc.bDeviceClass, 2710 udev->ddesc.bDeviceSubClass, 2711 usb_get_serial(udev), 2712 UGETW(udev->ddesc.bcdDevice), 2713 (udev->flags.usb_mode == USB_MODE_HOST) ? "host" : "device", 2714 udev->port_no 2715 #if USB_HAVE_UGEN 2716 , udev->parent_hub != NULL ? 2717 udev->parent_hub->ugen_name : 2718 device_get_nameunit(device_get_parent(udev->bus->bdev)) 2719 #endif 2720 ); 2721 sbuf_finish(sb); 2722 devctl_notify("USB", "DEVICE", type, sbuf_data(sb)); 2723 sbuf_delete(sb); 2724 2725 /* announce each interface */ 2726 for (i = 0; i < USB_IFACE_MAX; i++) { 2727 iface = usbd_get_iface(udev, i); 2728 if (iface == NULL) 2729 break; /* end of interfaces */ 2730 if (iface->idesc == NULL) 2731 continue; /* no interface descriptor */ 2732 2733 sb = sbuf_new_auto(); 2734 sbuf_printf(sb, 2735 #if USB_HAVE_UGEN 2736 "ugen=%s " 2737 "cdev=%s " 2738 #endif 2739 "vendor=0x%04x " 2740 "product=0x%04x " 2741 "devclass=0x%02x " 2742 "devsubclass=0x%02x " 2743 "sernum=\"%s\" " 2744 "release=0x%04x " 2745 "mode=%s " 2746 "interface=%d " 2747 "endpoints=%d " 2748 "intclass=0x%02x " 2749 "intsubclass=0x%02x " 2750 "intprotocol=0x%02x", 2751 #if USB_HAVE_UGEN 2752 udev->ugen_name, 2753 udev->ugen_name, 2754 #endif 2755 UGETW(udev->ddesc.idVendor), 2756 UGETW(udev->ddesc.idProduct), 2757 udev->ddesc.bDeviceClass, 2758 udev->ddesc.bDeviceSubClass, 2759 usb_get_serial(udev), 2760 UGETW(udev->ddesc.bcdDevice), 2761 (udev->flags.usb_mode == USB_MODE_HOST) ? "host" : "device", 2762 iface->idesc->bInterfaceNumber, 2763 iface->idesc->bNumEndpoints, 2764 iface->idesc->bInterfaceClass, 2765 iface->idesc->bInterfaceSubClass, 2766 iface->idesc->bInterfaceProtocol); 2767 sbuf_finish(sb); 2768 devctl_notify("USB", "INTERFACE", type, sbuf_data(sb)); 2769 sbuf_delete(sb); 2770 } 2771 } 2772 #endif 2773 2774 #if USB_HAVE_UGEN 2775 /*------------------------------------------------------------------------* 2776 * usb_fifo_free_wrap 2777 * 2778 * This function will free the FIFOs. 2779 * 2780 * Description of "flag" argument: If the USB_UNCFG_FLAG_FREE_EP0 flag 2781 * is set and "iface_index" is set to "USB_IFACE_INDEX_ANY", we free 2782 * all FIFOs. If the USB_UNCFG_FLAG_FREE_EP0 flag is not set and 2783 * "iface_index" is set to "USB_IFACE_INDEX_ANY", we free all non 2784 * control endpoint FIFOs. If "iface_index" is not set to 2785 * "USB_IFACE_INDEX_ANY" the flag has no effect. 2786 *------------------------------------------------------------------------*/ 2787 static void 2788 usb_fifo_free_wrap(struct usb_device *udev, 2789 uint8_t iface_index, uint8_t flag) 2790 { 2791 struct usb_fifo *f; 2792 uint16_t i; 2793 2794 /* 2795 * Free any USB FIFOs on the given interface: 2796 */ 2797 for (i = 0; i != USB_FIFO_MAX; i++) { 2798 f = udev->fifo[i]; 2799 if (f == NULL) { 2800 continue; 2801 } 2802 /* Check if the interface index matches */ 2803 if (iface_index == f->iface_index) { 2804 if (f->methods != &usb_ugen_methods) { 2805 /* 2806 * Don't free any non-generic FIFOs in 2807 * this case. 2808 */ 2809 continue; 2810 } 2811 if ((f->dev_ep_index == 0) && 2812 (f->fs_xfer == NULL)) { 2813 /* no need to free this FIFO */ 2814 continue; 2815 } 2816 } else if (iface_index == USB_IFACE_INDEX_ANY) { 2817 if ((f->methods == &usb_ugen_methods) && 2818 (f->dev_ep_index == 0) && 2819 (!(flag & USB_UNCFG_FLAG_FREE_EP0)) && 2820 (f->fs_xfer == NULL)) { 2821 /* no need to free this FIFO */ 2822 continue; 2823 } 2824 } else { 2825 /* no need to free this FIFO */ 2826 continue; 2827 } 2828 /* free this FIFO */ 2829 usb_fifo_free(f); 2830 } 2831 } 2832 #endif 2833 2834 /*------------------------------------------------------------------------* 2835 * usb_peer_can_wakeup 2836 * 2837 * Return values: 2838 * 0: Peer cannot do resume signalling. 2839 * Else: Peer can do resume signalling. 2840 *------------------------------------------------------------------------*/ 2841 uint8_t 2842 usb_peer_can_wakeup(struct usb_device *udev) 2843 { 2844 const struct usb_config_descriptor *cdp; 2845 2846 cdp = udev->cdesc; 2847 if ((cdp != NULL) && (udev->flags.usb_mode == USB_MODE_HOST)) { 2848 return (cdp->bmAttributes & UC_REMOTE_WAKEUP); 2849 } 2850 return (0); /* not supported */ 2851 } 2852 2853 void 2854 usb_set_device_state(struct usb_device *udev, enum usb_dev_state state) 2855 { 2856 2857 KASSERT(state < USB_STATE_MAX, ("invalid udev state")); 2858 2859 DPRINTF("udev %p state %s -> %s\n", udev, 2860 usb_statestr(udev->state), usb_statestr(state)); 2861 2862 #if USB_HAVE_UGEN 2863 mtx_lock(&usb_ref_lock); 2864 #endif 2865 udev->state = state; 2866 #if USB_HAVE_UGEN 2867 mtx_unlock(&usb_ref_lock); 2868 #endif 2869 if (udev->bus->methods->device_state_change != NULL) 2870 (udev->bus->methods->device_state_change) (udev); 2871 } 2872 2873 enum usb_dev_state 2874 usb_get_device_state(struct usb_device *udev) 2875 { 2876 if (udev == NULL) 2877 return (USB_STATE_DETACHED); 2878 return (udev->state); 2879 } 2880 2881 uint8_t 2882 usbd_device_attached(struct usb_device *udev) 2883 { 2884 return (udev->state > USB_STATE_DETACHED); 2885 } 2886 2887 /* 2888 * The following function locks enumerating the given USB device. If 2889 * the lock is already grabbed this function returns zero. Else a 2890 * a value of one is returned. 2891 */ 2892 uint8_t 2893 usbd_enum_lock(struct usb_device *udev) 2894 { 2895 if (sx_xlocked(&udev->enum_sx)) 2896 return (0); 2897 2898 sx_xlock(&udev->enum_sx); 2899 sx_xlock(&udev->sr_sx); 2900 /* 2901 * NEWBUS LOCK NOTE: We should check if any parent SX locks 2902 * are locked before locking Giant. Else the lock can be 2903 * locked multiple times. 2904 */ 2905 bus_topo_lock(); 2906 return (1); 2907 } 2908 2909 #if USB_HAVE_UGEN 2910 /* 2911 * This function is the same like usbd_enum_lock() except a value of 2912 * 255 is returned when a signal is pending: 2913 */ 2914 uint8_t 2915 usbd_enum_lock_sig(struct usb_device *udev) 2916 { 2917 if (sx_xlocked(&udev->enum_sx)) 2918 return (0); 2919 if (sx_xlock_sig(&udev->enum_sx)) 2920 return (255); 2921 if (sx_xlock_sig(&udev->sr_sx)) { 2922 sx_xunlock(&udev->enum_sx); 2923 return (255); 2924 } 2925 bus_topo_lock(); 2926 return (1); 2927 } 2928 #endif 2929 2930 /* The following function unlocks enumerating the given USB device. */ 2931 2932 void 2933 usbd_enum_unlock(struct usb_device *udev) 2934 { 2935 bus_topo_unlock(); 2936 sx_xunlock(&udev->enum_sx); 2937 sx_xunlock(&udev->sr_sx); 2938 } 2939 2940 /* The following function locks suspend and resume. */ 2941 2942 void 2943 usbd_sr_lock(struct usb_device *udev) 2944 { 2945 sx_xlock(&udev->sr_sx); 2946 /* 2947 * NEWBUS LOCK NOTE: We should check if any parent SX locks 2948 * are locked before locking Giant. Else the lock can be 2949 * locked multiple times. 2950 */ 2951 bus_topo_lock(); 2952 } 2953 2954 /* The following function unlocks suspend and resume. */ 2955 2956 void 2957 usbd_sr_unlock(struct usb_device *udev) 2958 { 2959 bus_topo_unlock(); 2960 sx_xunlock(&udev->sr_sx); 2961 } 2962 2963 /* 2964 * The following function checks the enumerating lock for the given 2965 * USB device. 2966 */ 2967 2968 uint8_t 2969 usbd_enum_is_locked(struct usb_device *udev) 2970 { 2971 return (sx_xlocked(&udev->enum_sx)); 2972 } 2973 2974 /* 2975 * The following function is used to serialize access to USB control 2976 * transfers and the USB scratch area. If the lock is already grabbed 2977 * this function returns zero. Else a value of one is returned. 2978 */ 2979 uint8_t 2980 usbd_ctrl_lock(struct usb_device *udev) 2981 { 2982 if (sx_xlocked(&udev->ctrl_sx)) 2983 return (0); 2984 sx_xlock(&udev->ctrl_sx); 2985 2986 /* 2987 * We need to allow suspend and resume at this point, else the 2988 * control transfer will timeout if the device is suspended! 2989 */ 2990 if (usbd_enum_is_locked(udev)) 2991 usbd_sr_unlock(udev); 2992 return (1); 2993 } 2994 2995 void 2996 usbd_ctrl_unlock(struct usb_device *udev) 2997 { 2998 sx_xunlock(&udev->ctrl_sx); 2999 3000 /* 3001 * Restore the suspend and resume lock after we have unlocked 3002 * the USB control transfer lock to avoid LOR: 3003 */ 3004 if (usbd_enum_is_locked(udev)) 3005 usbd_sr_lock(udev); 3006 } 3007 3008 /* 3009 * The following function is used to set the per-interface specific 3010 * plug and play information. The string referred to by the pnpinfo 3011 * argument can safely be freed after calling this function. The 3012 * pnpinfo of an interface will be reset at device detach or when 3013 * passing a NULL argument to this function. This function 3014 * returns zero on success, else a USB_ERR_XXX failure code. 3015 */ 3016 3017 usb_error_t 3018 usbd_set_pnpinfo(struct usb_device *udev, uint8_t iface_index, const char *pnpinfo) 3019 { 3020 struct usb_interface *iface; 3021 3022 iface = usbd_get_iface(udev, iface_index); 3023 if (iface == NULL) 3024 return (USB_ERR_INVAL); 3025 3026 if (iface->pnpinfo != NULL) { 3027 free(iface->pnpinfo, M_USBDEV); 3028 iface->pnpinfo = NULL; 3029 } 3030 3031 if (pnpinfo == NULL || pnpinfo[0] == 0) 3032 return (0); /* success */ 3033 3034 iface->pnpinfo = strdup(pnpinfo, M_USBDEV); 3035 if (iface->pnpinfo == NULL) 3036 return (USB_ERR_NOMEM); 3037 3038 return (0); /* success */ 3039 } 3040 3041 usb_error_t 3042 usbd_add_dynamic_quirk(struct usb_device *udev, uint16_t quirk) 3043 { 3044 uint8_t x; 3045 3046 for (x = 0; x != USB_MAX_AUTO_QUIRK; x++) { 3047 if (udev->autoQuirk[x] == 0 || 3048 udev->autoQuirk[x] == quirk) { 3049 udev->autoQuirk[x] = quirk; 3050 return (0); /* success */ 3051 } 3052 } 3053 return (USB_ERR_NOMEM); 3054 } 3055 3056 /* 3057 * The following function is used to select the endpoint mode. It 3058 * should not be called outside enumeration context. 3059 */ 3060 3061 usb_error_t 3062 usbd_set_endpoint_mode(struct usb_device *udev, struct usb_endpoint *ep, 3063 uint8_t ep_mode) 3064 { 3065 usb_error_t error; 3066 uint8_t do_unlock; 3067 3068 /* Prevent re-enumeration */ 3069 do_unlock = usbd_enum_lock(udev); 3070 3071 if (udev->bus->methods->set_endpoint_mode != NULL) { 3072 error = (udev->bus->methods->set_endpoint_mode) ( 3073 udev, ep, ep_mode); 3074 } else if (ep_mode != USB_EP_MODE_DEFAULT) { 3075 error = USB_ERR_INVAL; 3076 } else { 3077 error = 0; 3078 } 3079 3080 /* only set new mode regardless of error */ 3081 ep->ep_mode = ep_mode; 3082 3083 if (do_unlock) 3084 usbd_enum_unlock(udev); 3085 return (error); 3086 } 3087 3088 uint8_t 3089 usbd_get_endpoint_mode(struct usb_device *udev, struct usb_endpoint *ep) 3090 { 3091 return (ep->ep_mode); 3092 } 3093