usb_request.c revision 250207
1/* $FreeBSD: head/sys/dev/usb/usb_request.c 250207 2013-05-03 11:10:04Z hselasky $ */ 2/*- 3 * Copyright (c) 1998 The NetBSD Foundation, Inc. All rights reserved. 4 * Copyright (c) 1998 Lennart Augustsson. All rights reserved. 5 * Copyright (c) 2008 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/queue.h> 36#include <sys/types.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 51#include <dev/usb/usb.h> 52#include <dev/usb/usbdi.h> 53#include <dev/usb/usbdi_util.h> 54#include <dev/usb/usb_ioctl.h> 55#include <dev/usb/usbhid.h> 56 57#define USB_DEBUG_VAR usb_debug 58 59#include <dev/usb/usb_core.h> 60#include <dev/usb/usb_busdma.h> 61#include <dev/usb/usb_request.h> 62#include <dev/usb/usb_process.h> 63#include <dev/usb/usb_transfer.h> 64#include <dev/usb/usb_debug.h> 65#include <dev/usb/usb_device.h> 66#include <dev/usb/usb_util.h> 67#include <dev/usb/usb_dynamic.h> 68 69#include <dev/usb/usb_controller.h> 70#include <dev/usb/usb_bus.h> 71#include <sys/ctype.h> 72#endif /* USB_GLOBAL_INCLUDE_FILE */ 73 74static int usb_no_cs_fail; 75 76SYSCTL_INT(_hw_usb, OID_AUTO, no_cs_fail, CTLFLAG_RW, 77 &usb_no_cs_fail, 0, "USB clear stall failures are ignored, if set"); 78 79static int usb_full_ddesc; 80 81SYSCTL_INT(_hw_usb, OID_AUTO, full_ddesc, CTLFLAG_RW, 82 &usb_full_ddesc, 0, "USB always read complete device descriptor, if set"); 83 84#ifdef USB_DEBUG 85#ifdef USB_REQ_DEBUG 86/* The following structures are used in connection to fault injection. */ 87struct usb_ctrl_debug { 88 int bus_index; /* target bus */ 89 int dev_index; /* target address */ 90 int ds_fail; /* fail data stage */ 91 int ss_fail; /* fail status stage */ 92 int ds_delay; /* data stage delay in ms */ 93 int ss_delay; /* status stage delay in ms */ 94 int bmRequestType_value; 95 int bRequest_value; 96}; 97 98struct usb_ctrl_debug_bits { 99 uint16_t ds_delay; 100 uint16_t ss_delay; 101 uint8_t ds_fail:1; 102 uint8_t ss_fail:1; 103 uint8_t enabled:1; 104}; 105 106/* The default is to disable fault injection. */ 107 108static struct usb_ctrl_debug usb_ctrl_debug = { 109 .bus_index = -1, 110 .dev_index = -1, 111 .bmRequestType_value = -1, 112 .bRequest_value = -1, 113}; 114 115SYSCTL_INT(_hw_usb, OID_AUTO, ctrl_bus_fail, CTLFLAG_RW, 116 &usb_ctrl_debug.bus_index, 0, "USB controller index to fail"); 117SYSCTL_INT(_hw_usb, OID_AUTO, ctrl_dev_fail, CTLFLAG_RW, 118 &usb_ctrl_debug.dev_index, 0, "USB device address to fail"); 119SYSCTL_INT(_hw_usb, OID_AUTO, ctrl_ds_fail, CTLFLAG_RW, 120 &usb_ctrl_debug.ds_fail, 0, "USB fail data stage"); 121SYSCTL_INT(_hw_usb, OID_AUTO, ctrl_ss_fail, CTLFLAG_RW, 122 &usb_ctrl_debug.ss_fail, 0, "USB fail status stage"); 123SYSCTL_INT(_hw_usb, OID_AUTO, ctrl_ds_delay, CTLFLAG_RW, 124 &usb_ctrl_debug.ds_delay, 0, "USB data stage delay in ms"); 125SYSCTL_INT(_hw_usb, OID_AUTO, ctrl_ss_delay, CTLFLAG_RW, 126 &usb_ctrl_debug.ss_delay, 0, "USB status stage delay in ms"); 127SYSCTL_INT(_hw_usb, OID_AUTO, ctrl_rt_fail, CTLFLAG_RW, 128 &usb_ctrl_debug.bmRequestType_value, 0, "USB bmRequestType to fail"); 129SYSCTL_INT(_hw_usb, OID_AUTO, ctrl_rv_fail, CTLFLAG_RW, 130 &usb_ctrl_debug.bRequest_value, 0, "USB bRequest to fail"); 131 132/*------------------------------------------------------------------------* 133 * usbd_get_debug_bits 134 * 135 * This function is only useful in USB host mode. 136 *------------------------------------------------------------------------*/ 137static void 138usbd_get_debug_bits(struct usb_device *udev, struct usb_device_request *req, 139 struct usb_ctrl_debug_bits *dbg) 140{ 141 int temp; 142 143 memset(dbg, 0, sizeof(*dbg)); 144 145 /* Compute data stage delay */ 146 147 temp = usb_ctrl_debug.ds_delay; 148 if (temp < 0) 149 temp = 0; 150 else if (temp > (16*1024)) 151 temp = (16*1024); 152 153 dbg->ds_delay = temp; 154 155 /* Compute status stage delay */ 156 157 temp = usb_ctrl_debug.ss_delay; 158 if (temp < 0) 159 temp = 0; 160 else if (temp > (16*1024)) 161 temp = (16*1024); 162 163 dbg->ss_delay = temp; 164 165 /* Check if this control request should be failed */ 166 167 if (usbd_get_bus_index(udev) != usb_ctrl_debug.bus_index) 168 return; 169 170 if (usbd_get_device_index(udev) != usb_ctrl_debug.dev_index) 171 return; 172 173 temp = usb_ctrl_debug.bmRequestType_value; 174 175 if ((temp != req->bmRequestType) && (temp >= 0) && (temp <= 255)) 176 return; 177 178 temp = usb_ctrl_debug.bRequest_value; 179 180 if ((temp != req->bRequest) && (temp >= 0) && (temp <= 255)) 181 return; 182 183 temp = usb_ctrl_debug.ds_fail; 184 if (temp) 185 dbg->ds_fail = 1; 186 187 temp = usb_ctrl_debug.ss_fail; 188 if (temp) 189 dbg->ss_fail = 1; 190 191 dbg->enabled = 1; 192} 193#endif /* USB_REQ_DEBUG */ 194#endif /* USB_DEBUG */ 195 196/*------------------------------------------------------------------------* 197 * usbd_do_request_callback 198 * 199 * This function is the USB callback for generic USB Host control 200 * transfers. 201 *------------------------------------------------------------------------*/ 202void 203usbd_do_request_callback(struct usb_xfer *xfer, usb_error_t error) 204{ 205 ; /* workaround for a bug in "indent" */ 206 207 DPRINTF("st=%u\n", USB_GET_STATE(xfer)); 208 209 switch (USB_GET_STATE(xfer)) { 210 case USB_ST_SETUP: 211 usbd_transfer_submit(xfer); 212 break; 213 default: 214 cv_signal(&xfer->xroot->udev->ctrlreq_cv); 215 break; 216 } 217} 218 219/*------------------------------------------------------------------------* 220 * usb_do_clear_stall_callback 221 * 222 * This function is the USB callback for generic clear stall requests. 223 *------------------------------------------------------------------------*/ 224void 225usb_do_clear_stall_callback(struct usb_xfer *xfer, usb_error_t error) 226{ 227 struct usb_device_request req; 228 struct usb_device *udev; 229 struct usb_endpoint *ep; 230 struct usb_endpoint *ep_end; 231 struct usb_endpoint *ep_first; 232 usb_stream_t x; 233 uint8_t to; 234 235 udev = xfer->xroot->udev; 236 237 USB_BUS_LOCK(udev->bus); 238 239 /* round robin endpoint clear stall */ 240 241 ep = udev->ep_curr; 242 ep_end = udev->endpoints + udev->endpoints_max; 243 ep_first = udev->endpoints; 244 to = udev->endpoints_max; 245 246 switch (USB_GET_STATE(xfer)) { 247 case USB_ST_TRANSFERRED: 248tr_transferred: 249 /* reset error counter */ 250 udev->clear_stall_errors = 0; 251 252 if (ep == NULL) 253 goto tr_setup; /* device was unconfigured */ 254 if (ep->edesc && 255 ep->is_stalled) { 256 ep->toggle_next = 0; 257 ep->is_stalled = 0; 258 /* some hardware needs a callback to clear the data toggle */ 259 usbd_clear_stall_locked(udev, ep); 260 for (x = 0; x != USB_MAX_EP_STREAMS; x++) { 261 /* start the current or next transfer, if any */ 262 usb_command_wrapper(&ep->endpoint_q[x], 263 ep->endpoint_q[x].curr); 264 } 265 } 266 ep++; 267 268 case USB_ST_SETUP: 269tr_setup: 270 if (to == 0) 271 break; /* no endpoints - nothing to do */ 272 if ((ep < ep_first) || (ep >= ep_end)) 273 ep = ep_first; /* endpoint wrapped around */ 274 if (ep->edesc && 275 ep->is_stalled) { 276 277 /* setup a clear-stall packet */ 278 279 req.bmRequestType = UT_WRITE_ENDPOINT; 280 req.bRequest = UR_CLEAR_FEATURE; 281 USETW(req.wValue, UF_ENDPOINT_HALT); 282 req.wIndex[0] = ep->edesc->bEndpointAddress; 283 req.wIndex[1] = 0; 284 USETW(req.wLength, 0); 285 286 /* copy in the transfer */ 287 288 usbd_copy_in(xfer->frbuffers, 0, &req, sizeof(req)); 289 290 /* set length */ 291 usbd_xfer_set_frame_len(xfer, 0, sizeof(req)); 292 xfer->nframes = 1; 293 USB_BUS_UNLOCK(udev->bus); 294 295 usbd_transfer_submit(xfer); 296 297 USB_BUS_LOCK(udev->bus); 298 break; 299 } 300 ep++; 301 to--; 302 goto tr_setup; 303 304 default: 305 if (error == USB_ERR_CANCELLED) 306 break; 307 308 DPRINTF("Clear stall failed.\n"); 309 310 /* 311 * Some VMs like VirtualBox always return failure on 312 * clear-stall which we sometimes should just ignore. 313 */ 314 if (usb_no_cs_fail) 315 goto tr_transferred; 316 if (udev->clear_stall_errors == USB_CS_RESET_LIMIT) 317 goto tr_setup; 318 319 if (error == USB_ERR_TIMEOUT) { 320 udev->clear_stall_errors = USB_CS_RESET_LIMIT; 321 DPRINTF("Trying to re-enumerate.\n"); 322 usbd_start_re_enumerate(udev); 323 } else { 324 udev->clear_stall_errors++; 325 if (udev->clear_stall_errors == USB_CS_RESET_LIMIT) { 326 DPRINTF("Trying to re-enumerate.\n"); 327 usbd_start_re_enumerate(udev); 328 } 329 } 330 goto tr_setup; 331 } 332 333 /* store current endpoint */ 334 udev->ep_curr = ep; 335 USB_BUS_UNLOCK(udev->bus); 336} 337 338static usb_handle_req_t * 339usbd_get_hr_func(struct usb_device *udev) 340{ 341 /* figure out if there is a Handle Request function */ 342 if (udev->flags.usb_mode == USB_MODE_DEVICE) 343 return (usb_temp_get_desc_p); 344 else if (udev->parent_hub == NULL) 345 return (udev->bus->methods->roothub_exec); 346 else 347 return (NULL); 348} 349 350/*------------------------------------------------------------------------* 351 * usbd_do_request_flags and usbd_do_request 352 * 353 * Description of arguments passed to these functions: 354 * 355 * "udev" - this is the "usb_device" structure pointer on which the 356 * request should be performed. It is possible to call this function 357 * in both Host Side mode and Device Side mode. 358 * 359 * "mtx" - if this argument is non-NULL the mutex pointed to by it 360 * will get dropped and picked up during the execution of this 361 * function, hence this function sometimes needs to sleep. If this 362 * argument is NULL it has no effect. 363 * 364 * "req" - this argument must always be non-NULL and points to an 365 * 8-byte structure holding the USB request to be done. The USB 366 * request structure has a bit telling the direction of the USB 367 * request, if it is a read or a write. 368 * 369 * "data" - if the "wLength" part of the structure pointed to by "req" 370 * is non-zero this argument must point to a valid kernel buffer which 371 * can hold at least "wLength" bytes. If "wLength" is zero "data" can 372 * be NULL. 373 * 374 * "flags" - here is a list of valid flags: 375 * 376 * o USB_SHORT_XFER_OK: allows the data transfer to be shorter than 377 * specified 378 * 379 * o USB_DELAY_STATUS_STAGE: allows the status stage to be performed 380 * at a later point in time. This is tunable by the "hw.usb.ss_delay" 381 * sysctl. This flag is mostly useful for debugging. 382 * 383 * o USB_USER_DATA_PTR: treat the "data" pointer like a userland 384 * pointer. 385 * 386 * "actlen" - if non-NULL the actual transfer length will be stored in 387 * the 16-bit unsigned integer pointed to by "actlen". This 388 * information is mostly useful when the "USB_SHORT_XFER_OK" flag is 389 * used. 390 * 391 * "timeout" - gives the timeout for the control transfer in 392 * milliseconds. A "timeout" value less than 50 milliseconds is 393 * treated like a 50 millisecond timeout. A "timeout" value greater 394 * than 30 seconds is treated like a 30 second timeout. This USB stack 395 * does not allow control requests without a timeout. 396 * 397 * NOTE: This function is thread safe. All calls to "usbd_do_request_flags" 398 * will be serialized by the use of the USB device enumeration lock. 399 * 400 * Returns: 401 * 0: Success 402 * Else: Failure 403 *------------------------------------------------------------------------*/ 404usb_error_t 405usbd_do_request_flags(struct usb_device *udev, struct mtx *mtx, 406 struct usb_device_request *req, void *data, uint16_t flags, 407 uint16_t *actlen, usb_timeout_t timeout) 408{ 409#ifdef USB_REQ_DEBUG 410 struct usb_ctrl_debug_bits dbg; 411#endif 412 usb_handle_req_t *hr_func; 413 struct usb_xfer *xfer; 414 const void *desc; 415 int err = 0; 416 usb_ticks_t start_ticks; 417 usb_ticks_t delta_ticks; 418 usb_ticks_t max_ticks; 419 uint16_t length; 420 uint16_t temp; 421 uint16_t acttemp; 422 uint8_t do_unlock; 423 424 if (timeout < 50) { 425 /* timeout is too small */ 426 timeout = 50; 427 } 428 if (timeout > 30000) { 429 /* timeout is too big */ 430 timeout = 30000; 431 } 432 length = UGETW(req->wLength); 433 434 DPRINTFN(5, "udev=%p bmRequestType=0x%02x bRequest=0x%02x " 435 "wValue=0x%02x%02x wIndex=0x%02x%02x wLength=0x%02x%02x\n", 436 udev, req->bmRequestType, req->bRequest, 437 req->wValue[1], req->wValue[0], 438 req->wIndex[1], req->wIndex[0], 439 req->wLength[1], req->wLength[0]); 440 441 /* Check if the device is still alive */ 442 if (udev->state < USB_STATE_POWERED) { 443 DPRINTF("usb device has gone\n"); 444 return (USB_ERR_NOT_CONFIGURED); 445 } 446 447 /* 448 * Set "actlen" to a known value in case the caller does not 449 * check the return value: 450 */ 451 if (actlen) 452 *actlen = 0; 453 454#if (USB_HAVE_USER_IO == 0) 455 if (flags & USB_USER_DATA_PTR) 456 return (USB_ERR_INVAL); 457#endif 458 if ((mtx != NULL) && (mtx != &Giant)) { 459 mtx_unlock(mtx); 460 mtx_assert(mtx, MA_NOTOWNED); 461 } 462 463 /* 464 * Grab the USB device enumeration SX-lock serialization is 465 * achieved when multiple threads are involved: 466 */ 467 do_unlock = usbd_enum_lock(udev); 468 469 /* 470 * We need to allow suspend and resume at this point, else the 471 * control transfer will timeout if the device is suspended! 472 */ 473 usbd_sr_unlock(udev); 474 475 hr_func = usbd_get_hr_func(udev); 476 477 if (hr_func != NULL) { 478 DPRINTF("Handle Request function is set\n"); 479 480 desc = NULL; 481 temp = 0; 482 483 if (!(req->bmRequestType & UT_READ)) { 484 if (length != 0) { 485 DPRINTFN(1, "The handle request function " 486 "does not support writing data!\n"); 487 err = USB_ERR_INVAL; 488 goto done; 489 } 490 } 491 492 /* The root HUB code needs the BUS lock locked */ 493 494 USB_BUS_LOCK(udev->bus); 495 err = (hr_func) (udev, req, &desc, &temp); 496 USB_BUS_UNLOCK(udev->bus); 497 498 if (err) 499 goto done; 500 501 if (length > temp) { 502 if (!(flags & USB_SHORT_XFER_OK)) { 503 err = USB_ERR_SHORT_XFER; 504 goto done; 505 } 506 length = temp; 507 } 508 if (actlen) 509 *actlen = length; 510 511 if (length > 0) { 512#if USB_HAVE_USER_IO 513 if (flags & USB_USER_DATA_PTR) { 514 if (copyout(desc, data, length)) { 515 err = USB_ERR_INVAL; 516 goto done; 517 } 518 } else 519#endif 520 memcpy(data, desc, length); 521 } 522 goto done; /* success */ 523 } 524 525 /* 526 * Setup a new USB transfer or use the existing one, if any: 527 */ 528 usbd_ctrl_transfer_setup(udev); 529 530 xfer = udev->ctrl_xfer[0]; 531 if (xfer == NULL) { 532 /* most likely out of memory */ 533 err = USB_ERR_NOMEM; 534 goto done; 535 } 536 537#ifdef USB_REQ_DEBUG 538 /* Get debug bits */ 539 usbd_get_debug_bits(udev, req, &dbg); 540 541 /* Check for fault injection */ 542 if (dbg.enabled) 543 flags |= USB_DELAY_STATUS_STAGE; 544#endif 545 USB_XFER_LOCK(xfer); 546 547 if (flags & USB_DELAY_STATUS_STAGE) 548 xfer->flags.manual_status = 1; 549 else 550 xfer->flags.manual_status = 0; 551 552 if (flags & USB_SHORT_XFER_OK) 553 xfer->flags.short_xfer_ok = 1; 554 else 555 xfer->flags.short_xfer_ok = 0; 556 557 xfer->timeout = timeout; 558 559 start_ticks = ticks; 560 561 max_ticks = USB_MS_TO_TICKS(timeout); 562 563 usbd_copy_in(xfer->frbuffers, 0, req, sizeof(*req)); 564 565 usbd_xfer_set_frame_len(xfer, 0, sizeof(*req)); 566 567 while (1) { 568 temp = length; 569 if (temp > usbd_xfer_max_len(xfer)) { 570 temp = usbd_xfer_max_len(xfer); 571 } 572#ifdef USB_REQ_DEBUG 573 if (xfer->flags.manual_status) { 574 if (usbd_xfer_frame_len(xfer, 0) != 0) { 575 /* Execute data stage separately */ 576 temp = 0; 577 } else if (temp > 0) { 578 if (dbg.ds_fail) { 579 err = USB_ERR_INVAL; 580 break; 581 } 582 if (dbg.ds_delay > 0) { 583 usb_pause_mtx( 584 xfer->xroot->xfer_mtx, 585 USB_MS_TO_TICKS(dbg.ds_delay)); 586 /* make sure we don't time out */ 587 start_ticks = ticks; 588 } 589 } 590 } 591#endif 592 usbd_xfer_set_frame_len(xfer, 1, temp); 593 594 if (temp > 0) { 595 if (!(req->bmRequestType & UT_READ)) { 596#if USB_HAVE_USER_IO 597 if (flags & USB_USER_DATA_PTR) { 598 USB_XFER_UNLOCK(xfer); 599 err = usbd_copy_in_user(xfer->frbuffers + 1, 600 0, data, temp); 601 USB_XFER_LOCK(xfer); 602 if (err) { 603 err = USB_ERR_INVAL; 604 break; 605 } 606 } else 607#endif 608 usbd_copy_in(xfer->frbuffers + 1, 609 0, data, temp); 610 } 611 usbd_xfer_set_frames(xfer, 2); 612 } else { 613 if (usbd_xfer_frame_len(xfer, 0) == 0) { 614 if (xfer->flags.manual_status) { 615#ifdef USB_REQ_DEBUG 616 if (dbg.ss_fail) { 617 err = USB_ERR_INVAL; 618 break; 619 } 620 if (dbg.ss_delay > 0) { 621 usb_pause_mtx( 622 xfer->xroot->xfer_mtx, 623 USB_MS_TO_TICKS(dbg.ss_delay)); 624 /* make sure we don't time out */ 625 start_ticks = ticks; 626 } 627#endif 628 xfer->flags.manual_status = 0; 629 } else { 630 break; 631 } 632 } 633 usbd_xfer_set_frames(xfer, 1); 634 } 635 636 usbd_transfer_start(xfer); 637 638 while (usbd_transfer_pending(xfer)) { 639 cv_wait(&udev->ctrlreq_cv, 640 xfer->xroot->xfer_mtx); 641 } 642 643 err = xfer->error; 644 645 if (err) { 646 break; 647 } 648 649 /* get actual length of DATA stage */ 650 651 if (xfer->aframes < 2) { 652 acttemp = 0; 653 } else { 654 acttemp = usbd_xfer_frame_len(xfer, 1); 655 } 656 657 /* check for short packet */ 658 659 if (temp > acttemp) { 660 temp = acttemp; 661 length = temp; 662 } 663 if (temp > 0) { 664 if (req->bmRequestType & UT_READ) { 665#if USB_HAVE_USER_IO 666 if (flags & USB_USER_DATA_PTR) { 667 USB_XFER_UNLOCK(xfer); 668 err = usbd_copy_out_user(xfer->frbuffers + 1, 669 0, data, temp); 670 USB_XFER_LOCK(xfer); 671 if (err) { 672 err = USB_ERR_INVAL; 673 break; 674 } 675 } else 676#endif 677 usbd_copy_out(xfer->frbuffers + 1, 678 0, data, temp); 679 } 680 } 681 /* 682 * Clear "frlengths[0]" so that we don't send the setup 683 * packet again: 684 */ 685 usbd_xfer_set_frame_len(xfer, 0, 0); 686 687 /* update length and data pointer */ 688 length -= temp; 689 data = USB_ADD_BYTES(data, temp); 690 691 if (actlen) { 692 (*actlen) += temp; 693 } 694 /* check for timeout */ 695 696 delta_ticks = ticks - start_ticks; 697 if (delta_ticks > max_ticks) { 698 if (!err) { 699 err = USB_ERR_TIMEOUT; 700 } 701 } 702 if (err) { 703 break; 704 } 705 } 706 707 if (err) { 708 /* 709 * Make sure that the control endpoint is no longer 710 * blocked in case of a non-transfer related error: 711 */ 712 usbd_transfer_stop(xfer); 713 } 714 USB_XFER_UNLOCK(xfer); 715 716done: 717 usbd_sr_lock(udev); 718 719 if (do_unlock) 720 usbd_enum_unlock(udev); 721 722 if ((mtx != NULL) && (mtx != &Giant)) 723 mtx_lock(mtx); 724 725 return ((usb_error_t)err); 726} 727 728/*------------------------------------------------------------------------* 729 * usbd_do_request_proc - factored out code 730 * 731 * This function is factored out code. It does basically the same like 732 * usbd_do_request_flags, except it will check the status of the 733 * passed process argument before doing the USB request. If the 734 * process is draining the USB_ERR_IOERROR code will be returned. It 735 * is assumed that the mutex associated with the process is locked 736 * when calling this function. 737 *------------------------------------------------------------------------*/ 738usb_error_t 739usbd_do_request_proc(struct usb_device *udev, struct usb_process *pproc, 740 struct usb_device_request *req, void *data, uint16_t flags, 741 uint16_t *actlen, usb_timeout_t timeout) 742{ 743 usb_error_t err; 744 uint16_t len; 745 746 /* get request data length */ 747 len = UGETW(req->wLength); 748 749 /* check if the device is being detached */ 750 if (usb_proc_is_gone(pproc)) { 751 err = USB_ERR_IOERROR; 752 goto done; 753 } 754 755 /* forward the USB request */ 756 err = usbd_do_request_flags(udev, pproc->up_mtx, 757 req, data, flags, actlen, timeout); 758 759done: 760 /* on failure we zero the data */ 761 /* on short packet we zero the unused data */ 762 if ((len != 0) && (req->bmRequestType & UE_DIR_IN)) { 763 if (err) 764 memset(data, 0, len); 765 else if (actlen && *actlen != len) 766 memset(((uint8_t *)data) + *actlen, 0, len - *actlen); 767 } 768 return (err); 769} 770 771/*------------------------------------------------------------------------* 772 * usbd_req_reset_port 773 * 774 * This function will instruct a USB HUB to perform a reset sequence 775 * on the specified port number. 776 * 777 * Returns: 778 * 0: Success. The USB device should now be at address zero. 779 * Else: Failure. No USB device is present and the USB port should be 780 * disabled. 781 *------------------------------------------------------------------------*/ 782usb_error_t 783usbd_req_reset_port(struct usb_device *udev, struct mtx *mtx, uint8_t port) 784{ 785 struct usb_port_status ps; 786 usb_error_t err; 787 uint16_t n; 788 uint16_t status; 789 uint16_t change; 790 791 DPRINTF("\n"); 792 793 /* clear any leftover port reset changes first */ 794 usbd_req_clear_port_feature( 795 udev, mtx, port, UHF_C_PORT_RESET); 796 797 /* assert port reset on the given port */ 798 err = usbd_req_set_port_feature( 799 udev, mtx, port, UHF_PORT_RESET); 800 801 /* check for errors */ 802 if (err) 803 goto done; 804 n = 0; 805 while (1) { 806 /* wait for the device to recover from reset */ 807 usb_pause_mtx(mtx, USB_MS_TO_TICKS(usb_port_reset_delay)); 808 n += usb_port_reset_delay; 809 err = usbd_req_get_port_status(udev, mtx, &ps, port); 810 if (err) 811 goto done; 812 813 status = UGETW(ps.wPortStatus); 814 change = UGETW(ps.wPortChange); 815 816 /* if the device disappeared, just give up */ 817 if (!(status & UPS_CURRENT_CONNECT_STATUS)) 818 goto done; 819 820 /* check if reset is complete */ 821 if (change & UPS_C_PORT_RESET) 822 break; 823 824 /* 825 * Some Virtual Machines like VirtualBox 4.x fail to 826 * generate a port reset change event. Check if reset 827 * is no longer asserted. 828 */ 829 if (!(status & UPS_RESET)) 830 break; 831 832 /* check for timeout */ 833 if (n > 1000) { 834 n = 0; 835 break; 836 } 837 } 838 839 /* clear port reset first */ 840 err = usbd_req_clear_port_feature( 841 udev, mtx, port, UHF_C_PORT_RESET); 842 if (err) 843 goto done; 844 845 /* check for timeout */ 846 if (n == 0) { 847 err = USB_ERR_TIMEOUT; 848 goto done; 849 } 850 /* wait for the device to recover from reset */ 851 usb_pause_mtx(mtx, USB_MS_TO_TICKS(usb_port_reset_recovery)); 852 853done: 854 DPRINTFN(2, "port %d reset returning error=%s\n", 855 port, usbd_errstr(err)); 856 return (err); 857} 858 859/*------------------------------------------------------------------------* 860 * usbd_req_warm_reset_port 861 * 862 * This function will instruct an USB HUB to perform a warm reset 863 * sequence on the specified port number. This kind of reset is not 864 * mandatory for LOW-, FULL- and HIGH-speed USB HUBs and is targeted 865 * for SUPER-speed USB HUBs. 866 * 867 * Returns: 868 * 0: Success. The USB device should now be available again. 869 * Else: Failure. No USB device is present and the USB port should be 870 * disabled. 871 *------------------------------------------------------------------------*/ 872usb_error_t 873usbd_req_warm_reset_port(struct usb_device *udev, struct mtx *mtx, 874 uint8_t port) 875{ 876 struct usb_port_status ps; 877 usb_error_t err; 878 uint16_t n; 879 uint16_t status; 880 uint16_t change; 881 882 DPRINTF("\n"); 883 884 err = usbd_req_get_port_status(udev, mtx, &ps, port); 885 if (err) 886 goto done; 887 888 status = UGETW(ps.wPortStatus); 889 890 switch (UPS_PORT_LINK_STATE_GET(status)) { 891 case UPS_PORT_LS_U3: 892 case UPS_PORT_LS_COMP_MODE: 893 case UPS_PORT_LS_LOOPBACK: 894 case UPS_PORT_LS_SS_INA: 895 break; 896 default: 897 DPRINTF("Wrong state for warm reset\n"); 898 return (0); 899 } 900 901 /* clear any leftover warm port reset changes first */ 902 usbd_req_clear_port_feature(udev, mtx, 903 port, UHF_C_BH_PORT_RESET); 904 905 /* set warm port reset */ 906 err = usbd_req_set_port_feature(udev, mtx, 907 port, UHF_BH_PORT_RESET); 908 if (err) 909 goto done; 910 911 n = 0; 912 while (1) { 913 /* wait for the device to recover from reset */ 914 usb_pause_mtx(mtx, USB_MS_TO_TICKS(usb_port_reset_delay)); 915 n += usb_port_reset_delay; 916 err = usbd_req_get_port_status(udev, mtx, &ps, port); 917 if (err) 918 goto done; 919 920 status = UGETW(ps.wPortStatus); 921 change = UGETW(ps.wPortChange); 922 923 /* if the device disappeared, just give up */ 924 if (!(status & UPS_CURRENT_CONNECT_STATUS)) 925 goto done; 926 927 /* check if reset is complete */ 928 if (change & UPS_C_BH_PORT_RESET) 929 break; 930 931 /* check for timeout */ 932 if (n > 1000) { 933 n = 0; 934 break; 935 } 936 } 937 938 /* clear port reset first */ 939 err = usbd_req_clear_port_feature( 940 udev, mtx, port, UHF_C_BH_PORT_RESET); 941 if (err) 942 goto done; 943 944 /* check for timeout */ 945 if (n == 0) { 946 err = USB_ERR_TIMEOUT; 947 goto done; 948 } 949 /* wait for the device to recover from reset */ 950 usb_pause_mtx(mtx, USB_MS_TO_TICKS(usb_port_reset_recovery)); 951 952done: 953 DPRINTFN(2, "port %d warm reset returning error=%s\n", 954 port, usbd_errstr(err)); 955 return (err); 956} 957 958/*------------------------------------------------------------------------* 959 * usbd_req_get_desc 960 * 961 * This function can be used to retrieve USB descriptors. It contains 962 * some additional logic like zeroing of missing descriptor bytes and 963 * retrying an USB descriptor in case of failure. The "min_len" 964 * argument specifies the minimum descriptor length. The "max_len" 965 * argument specifies the maximum descriptor length. If the real 966 * descriptor length is less than the minimum length the missing 967 * byte(s) will be zeroed. The type field, the second byte of the USB 968 * descriptor, will get forced to the correct type. If the "actlen" 969 * pointer is non-NULL, the actual length of the transfer will get 970 * stored in the 16-bit unsigned integer which it is pointing to. The 971 * first byte of the descriptor will not get updated. If the "actlen" 972 * pointer is NULL the first byte of the descriptor will get updated 973 * to reflect the actual length instead. If "min_len" is not equal to 974 * "max_len" then this function will try to retrive the beginning of 975 * the descriptor and base the maximum length on the first byte of the 976 * descriptor. 977 * 978 * Returns: 979 * 0: Success 980 * Else: Failure 981 *------------------------------------------------------------------------*/ 982usb_error_t 983usbd_req_get_desc(struct usb_device *udev, 984 struct mtx *mtx, uint16_t *actlen, void *desc, 985 uint16_t min_len, uint16_t max_len, 986 uint16_t id, uint8_t type, uint8_t index, 987 uint8_t retries) 988{ 989 struct usb_device_request req; 990 uint8_t *buf; 991 usb_error_t err; 992 993 DPRINTFN(4, "id=%d, type=%d, index=%d, max_len=%d\n", 994 id, type, index, max_len); 995 996 req.bmRequestType = UT_READ_DEVICE; 997 req.bRequest = UR_GET_DESCRIPTOR; 998 USETW2(req.wValue, type, index); 999 USETW(req.wIndex, id); 1000 1001 while (1) { 1002 1003 if ((min_len < 2) || (max_len < 2)) { 1004 err = USB_ERR_INVAL; 1005 goto done; 1006 } 1007 USETW(req.wLength, min_len); 1008 1009 err = usbd_do_request_flags(udev, mtx, &req, 1010 desc, 0, NULL, 500 /* ms */); 1011 1012 if (err) { 1013 if (!retries) { 1014 goto done; 1015 } 1016 retries--; 1017 1018 usb_pause_mtx(mtx, hz / 5); 1019 1020 continue; 1021 } 1022 buf = desc; 1023 1024 if (min_len == max_len) { 1025 1026 /* enforce correct length */ 1027 if ((buf[0] > min_len) && (actlen == NULL)) 1028 buf[0] = min_len; 1029 1030 /* enforce correct type */ 1031 buf[1] = type; 1032 1033 goto done; 1034 } 1035 /* range check */ 1036 1037 if (max_len > buf[0]) { 1038 max_len = buf[0]; 1039 } 1040 /* zero minimum data */ 1041 1042 while (min_len > max_len) { 1043 min_len--; 1044 buf[min_len] = 0; 1045 } 1046 1047 /* set new minimum length */ 1048 1049 min_len = max_len; 1050 } 1051done: 1052 if (actlen != NULL) { 1053 if (err) 1054 *actlen = 0; 1055 else 1056 *actlen = min_len; 1057 } 1058 return (err); 1059} 1060 1061/*------------------------------------------------------------------------* 1062 * usbd_req_get_string_any 1063 * 1064 * This function will return the string given by "string_index" 1065 * using the first language ID. The maximum length "len" includes 1066 * the terminating zero. The "len" argument should be twice as 1067 * big pluss 2 bytes, compared with the actual maximum string length ! 1068 * 1069 * Returns: 1070 * 0: Success 1071 * Else: Failure 1072 *------------------------------------------------------------------------*/ 1073usb_error_t 1074usbd_req_get_string_any(struct usb_device *udev, struct mtx *mtx, char *buf, 1075 uint16_t len, uint8_t string_index) 1076{ 1077 char *s; 1078 uint8_t *temp; 1079 uint16_t i; 1080 uint16_t n; 1081 uint16_t c; 1082 uint8_t swap; 1083 usb_error_t err; 1084 1085 if (len == 0) { 1086 /* should not happen */ 1087 return (USB_ERR_NORMAL_COMPLETION); 1088 } 1089 if (string_index == 0) { 1090 /* this is the language table */ 1091 buf[0] = 0; 1092 return (USB_ERR_INVAL); 1093 } 1094 if (udev->flags.no_strings) { 1095 buf[0] = 0; 1096 return (USB_ERR_STALLED); 1097 } 1098 err = usbd_req_get_string_desc 1099 (udev, mtx, buf, len, udev->langid, string_index); 1100 if (err) { 1101 buf[0] = 0; 1102 return (err); 1103 } 1104 temp = (uint8_t *)buf; 1105 1106 if (temp[0] < 2) { 1107 /* string length is too short */ 1108 buf[0] = 0; 1109 return (USB_ERR_INVAL); 1110 } 1111 /* reserve one byte for terminating zero */ 1112 len--; 1113 1114 /* find maximum length */ 1115 s = buf; 1116 n = (temp[0] / 2) - 1; 1117 if (n > len) { 1118 n = len; 1119 } 1120 /* skip descriptor header */ 1121 temp += 2; 1122 1123 /* reset swap state */ 1124 swap = 3; 1125 1126 /* convert and filter */ 1127 for (i = 0; (i != n); i++) { 1128 c = UGETW(temp + (2 * i)); 1129 1130 /* convert from Unicode, handle buggy strings */ 1131 if (((c & 0xff00) == 0) && (swap & 1)) { 1132 /* Little Endian, default */ 1133 *s = c; 1134 swap = 1; 1135 } else if (((c & 0x00ff) == 0) && (swap & 2)) { 1136 /* Big Endian */ 1137 *s = c >> 8; 1138 swap = 2; 1139 } else { 1140 /* silently skip bad character */ 1141 continue; 1142 } 1143 1144 /* 1145 * Filter by default - We only allow alphanumerical 1146 * and a few more to avoid any problems with scripts 1147 * and daemons. 1148 */ 1149 if (isalpha(*s) || 1150 isdigit(*s) || 1151 *s == '-' || 1152 *s == '+' || 1153 *s == ' ' || 1154 *s == '.' || 1155 *s == ',') { 1156 /* allowed */ 1157 s++; 1158 } 1159 /* silently skip bad character */ 1160 } 1161 *s = 0; /* zero terminate resulting string */ 1162 return (USB_ERR_NORMAL_COMPLETION); 1163} 1164 1165/*------------------------------------------------------------------------* 1166 * usbd_req_get_string_desc 1167 * 1168 * If you don't know the language ID, consider using 1169 * "usbd_req_get_string_any()". 1170 * 1171 * Returns: 1172 * 0: Success 1173 * Else: Failure 1174 *------------------------------------------------------------------------*/ 1175usb_error_t 1176usbd_req_get_string_desc(struct usb_device *udev, struct mtx *mtx, void *sdesc, 1177 uint16_t max_len, uint16_t lang_id, 1178 uint8_t string_index) 1179{ 1180 return (usbd_req_get_desc(udev, mtx, NULL, sdesc, 2, max_len, lang_id, 1181 UDESC_STRING, string_index, 0)); 1182} 1183 1184/*------------------------------------------------------------------------* 1185 * usbd_req_get_config_desc_ptr 1186 * 1187 * This function is used in device side mode to retrieve the pointer 1188 * to the generated config descriptor. This saves allocating space for 1189 * an additional config descriptor when setting the configuration. 1190 * 1191 * Returns: 1192 * 0: Success 1193 * Else: Failure 1194 *------------------------------------------------------------------------*/ 1195usb_error_t 1196usbd_req_get_descriptor_ptr(struct usb_device *udev, 1197 struct usb_config_descriptor **ppcd, uint16_t wValue) 1198{ 1199 struct usb_device_request req; 1200 usb_handle_req_t *hr_func; 1201 const void *ptr; 1202 uint16_t len; 1203 usb_error_t err; 1204 1205 req.bmRequestType = UT_READ_DEVICE; 1206 req.bRequest = UR_GET_DESCRIPTOR; 1207 USETW(req.wValue, wValue); 1208 USETW(req.wIndex, 0); 1209 USETW(req.wLength, 0); 1210 1211 ptr = NULL; 1212 len = 0; 1213 1214 hr_func = usbd_get_hr_func(udev); 1215 1216 if (hr_func == NULL) 1217 err = USB_ERR_INVAL; 1218 else { 1219 USB_BUS_LOCK(udev->bus); 1220 err = (hr_func) (udev, &req, &ptr, &len); 1221 USB_BUS_UNLOCK(udev->bus); 1222 } 1223 1224 if (err) 1225 ptr = NULL; 1226 else if (ptr == NULL) 1227 err = USB_ERR_INVAL; 1228 1229 *ppcd = __DECONST(struct usb_config_descriptor *, ptr); 1230 1231 return (err); 1232} 1233 1234/*------------------------------------------------------------------------* 1235 * usbd_req_get_config_desc 1236 * 1237 * Returns: 1238 * 0: Success 1239 * Else: Failure 1240 *------------------------------------------------------------------------*/ 1241usb_error_t 1242usbd_req_get_config_desc(struct usb_device *udev, struct mtx *mtx, 1243 struct usb_config_descriptor *d, uint8_t conf_index) 1244{ 1245 usb_error_t err; 1246 1247 DPRINTFN(4, "confidx=%d\n", conf_index); 1248 1249 err = usbd_req_get_desc(udev, mtx, NULL, d, sizeof(*d), 1250 sizeof(*d), 0, UDESC_CONFIG, conf_index, 0); 1251 if (err) { 1252 goto done; 1253 } 1254 /* Extra sanity checking */ 1255 if (UGETW(d->wTotalLength) < (uint16_t)sizeof(*d)) { 1256 err = USB_ERR_INVAL; 1257 } 1258done: 1259 return (err); 1260} 1261 1262/*------------------------------------------------------------------------* 1263 * usbd_alloc_config_desc 1264 * 1265 * This function is used to allocate a zeroed configuration 1266 * descriptor. 1267 * 1268 * Returns: 1269 * NULL: Failure 1270 * Else: Success 1271 *------------------------------------------------------------------------*/ 1272void * 1273usbd_alloc_config_desc(struct usb_device *udev, uint32_t size) 1274{ 1275 if (size > USB_CONFIG_MAX) { 1276 DPRINTF("Configuration descriptor too big\n"); 1277 return (NULL); 1278 } 1279#if (USB_HAVE_FIXED_CONFIG == 0) 1280 return (malloc(size, M_USBDEV, M_ZERO | M_WAITOK)); 1281#else 1282 memset(udev->config_data, 0, sizeof(udev->config_data)); 1283 return (udev->config_data); 1284#endif 1285} 1286 1287/*------------------------------------------------------------------------* 1288 * usbd_alloc_config_desc 1289 * 1290 * This function is used to free a configuration descriptor. 1291 *------------------------------------------------------------------------*/ 1292void 1293usbd_free_config_desc(struct usb_device *udev, void *ptr) 1294{ 1295#if (USB_HAVE_FIXED_CONFIG == 0) 1296 free(ptr, M_USBDEV); 1297#endif 1298} 1299 1300/*------------------------------------------------------------------------* 1301 * usbd_req_get_config_desc_full 1302 * 1303 * This function gets the complete USB configuration descriptor and 1304 * ensures that "wTotalLength" is correct. The returned configuration 1305 * descriptor is freed by calling "usbd_free_config_desc()". 1306 * 1307 * Returns: 1308 * 0: Success 1309 * Else: Failure 1310 *------------------------------------------------------------------------*/ 1311usb_error_t 1312usbd_req_get_config_desc_full(struct usb_device *udev, struct mtx *mtx, 1313 struct usb_config_descriptor **ppcd, uint8_t index) 1314{ 1315 struct usb_config_descriptor cd; 1316 struct usb_config_descriptor *cdesc; 1317 uint32_t len; 1318 usb_error_t err; 1319 1320 DPRINTFN(4, "index=%d\n", index); 1321 1322 *ppcd = NULL; 1323 1324 err = usbd_req_get_config_desc(udev, mtx, &cd, index); 1325 if (err) 1326 return (err); 1327 1328 /* get full descriptor */ 1329 len = UGETW(cd.wTotalLength); 1330 if (len < (uint32_t)sizeof(*cdesc)) { 1331 /* corrupt descriptor */ 1332 return (USB_ERR_INVAL); 1333 } else if (len > USB_CONFIG_MAX) { 1334 DPRINTF("Configuration descriptor was truncated\n"); 1335 len = USB_CONFIG_MAX; 1336 } 1337 cdesc = usbd_alloc_config_desc(udev, len); 1338 if (cdesc == NULL) 1339 return (USB_ERR_NOMEM); 1340 err = usbd_req_get_desc(udev, mtx, NULL, cdesc, len, len, 0, 1341 UDESC_CONFIG, index, 3); 1342 if (err) { 1343 usbd_free_config_desc(udev, cdesc); 1344 return (err); 1345 } 1346 /* make sure that the device is not fooling us: */ 1347 USETW(cdesc->wTotalLength, len); 1348 1349 *ppcd = cdesc; 1350 1351 return (0); /* success */ 1352} 1353 1354/*------------------------------------------------------------------------* 1355 * usbd_req_get_device_desc 1356 * 1357 * Returns: 1358 * 0: Success 1359 * Else: Failure 1360 *------------------------------------------------------------------------*/ 1361usb_error_t 1362usbd_req_get_device_desc(struct usb_device *udev, struct mtx *mtx, 1363 struct usb_device_descriptor *d) 1364{ 1365 DPRINTFN(4, "\n"); 1366 return (usbd_req_get_desc(udev, mtx, NULL, d, sizeof(*d), 1367 sizeof(*d), 0, UDESC_DEVICE, 0, 3)); 1368} 1369 1370/*------------------------------------------------------------------------* 1371 * usbd_req_get_alt_interface_no 1372 * 1373 * Returns: 1374 * 0: Success 1375 * Else: Failure 1376 *------------------------------------------------------------------------*/ 1377usb_error_t 1378usbd_req_get_alt_interface_no(struct usb_device *udev, struct mtx *mtx, 1379 uint8_t *alt_iface_no, uint8_t iface_index) 1380{ 1381 struct usb_interface *iface = usbd_get_iface(udev, iface_index); 1382 struct usb_device_request req; 1383 1384 if ((iface == NULL) || (iface->idesc == NULL)) 1385 return (USB_ERR_INVAL); 1386 1387 req.bmRequestType = UT_READ_INTERFACE; 1388 req.bRequest = UR_GET_INTERFACE; 1389 USETW(req.wValue, 0); 1390 req.wIndex[0] = iface->idesc->bInterfaceNumber; 1391 req.wIndex[1] = 0; 1392 USETW(req.wLength, 1); 1393 return (usbd_do_request(udev, mtx, &req, alt_iface_no)); 1394} 1395 1396/*------------------------------------------------------------------------* 1397 * usbd_req_set_alt_interface_no 1398 * 1399 * Returns: 1400 * 0: Success 1401 * Else: Failure 1402 *------------------------------------------------------------------------*/ 1403usb_error_t 1404usbd_req_set_alt_interface_no(struct usb_device *udev, struct mtx *mtx, 1405 uint8_t iface_index, uint8_t alt_no) 1406{ 1407 struct usb_interface *iface = usbd_get_iface(udev, iface_index); 1408 struct usb_device_request req; 1409 1410 if ((iface == NULL) || (iface->idesc == NULL)) 1411 return (USB_ERR_INVAL); 1412 1413 req.bmRequestType = UT_WRITE_INTERFACE; 1414 req.bRequest = UR_SET_INTERFACE; 1415 req.wValue[0] = alt_no; 1416 req.wValue[1] = 0; 1417 req.wIndex[0] = iface->idesc->bInterfaceNumber; 1418 req.wIndex[1] = 0; 1419 USETW(req.wLength, 0); 1420 return (usbd_do_request(udev, mtx, &req, 0)); 1421} 1422 1423/*------------------------------------------------------------------------* 1424 * usbd_req_get_device_status 1425 * 1426 * Returns: 1427 * 0: Success 1428 * Else: Failure 1429 *------------------------------------------------------------------------*/ 1430usb_error_t 1431usbd_req_get_device_status(struct usb_device *udev, struct mtx *mtx, 1432 struct usb_status *st) 1433{ 1434 struct usb_device_request req; 1435 1436 req.bmRequestType = UT_READ_DEVICE; 1437 req.bRequest = UR_GET_STATUS; 1438 USETW(req.wValue, 0); 1439 USETW(req.wIndex, 0); 1440 USETW(req.wLength, sizeof(*st)); 1441 return (usbd_do_request(udev, mtx, &req, st)); 1442} 1443 1444/*------------------------------------------------------------------------* 1445 * usbd_req_get_hub_descriptor 1446 * 1447 * Returns: 1448 * 0: Success 1449 * Else: Failure 1450 *------------------------------------------------------------------------*/ 1451usb_error_t 1452usbd_req_get_hub_descriptor(struct usb_device *udev, struct mtx *mtx, 1453 struct usb_hub_descriptor *hd, uint8_t nports) 1454{ 1455 struct usb_device_request req; 1456 uint16_t len = (nports + 7 + (8 * 8)) / 8; 1457 1458 req.bmRequestType = UT_READ_CLASS_DEVICE; 1459 req.bRequest = UR_GET_DESCRIPTOR; 1460 USETW2(req.wValue, UDESC_HUB, 0); 1461 USETW(req.wIndex, 0); 1462 USETW(req.wLength, len); 1463 return (usbd_do_request(udev, mtx, &req, hd)); 1464} 1465 1466/*------------------------------------------------------------------------* 1467 * usbd_req_get_ss_hub_descriptor 1468 * 1469 * Returns: 1470 * 0: Success 1471 * Else: Failure 1472 *------------------------------------------------------------------------*/ 1473usb_error_t 1474usbd_req_get_ss_hub_descriptor(struct usb_device *udev, struct mtx *mtx, 1475 struct usb_hub_ss_descriptor *hd, uint8_t nports) 1476{ 1477 struct usb_device_request req; 1478 uint16_t len = sizeof(*hd) - 32 + 1 + ((nports + 7) / 8); 1479 1480 req.bmRequestType = UT_READ_CLASS_DEVICE; 1481 req.bRequest = UR_GET_DESCRIPTOR; 1482 USETW2(req.wValue, UDESC_SS_HUB, 0); 1483 USETW(req.wIndex, 0); 1484 USETW(req.wLength, len); 1485 return (usbd_do_request(udev, mtx, &req, hd)); 1486} 1487 1488/*------------------------------------------------------------------------* 1489 * usbd_req_get_hub_status 1490 * 1491 * Returns: 1492 * 0: Success 1493 * Else: Failure 1494 *------------------------------------------------------------------------*/ 1495usb_error_t 1496usbd_req_get_hub_status(struct usb_device *udev, struct mtx *mtx, 1497 struct usb_hub_status *st) 1498{ 1499 struct usb_device_request req; 1500 1501 req.bmRequestType = UT_READ_CLASS_DEVICE; 1502 req.bRequest = UR_GET_STATUS; 1503 USETW(req.wValue, 0); 1504 USETW(req.wIndex, 0); 1505 USETW(req.wLength, sizeof(struct usb_hub_status)); 1506 return (usbd_do_request(udev, mtx, &req, st)); 1507} 1508 1509/*------------------------------------------------------------------------* 1510 * usbd_req_set_address 1511 * 1512 * This function is used to set the address for an USB device. After 1513 * port reset the USB device will respond at address zero. 1514 * 1515 * Returns: 1516 * 0: Success 1517 * Else: Failure 1518 *------------------------------------------------------------------------*/ 1519usb_error_t 1520usbd_req_set_address(struct usb_device *udev, struct mtx *mtx, uint16_t addr) 1521{ 1522 struct usb_device_request req; 1523 usb_error_t err; 1524 1525 DPRINTFN(6, "setting device address=%d\n", addr); 1526 1527 req.bmRequestType = UT_WRITE_DEVICE; 1528 req.bRequest = UR_SET_ADDRESS; 1529 USETW(req.wValue, addr); 1530 USETW(req.wIndex, 0); 1531 USETW(req.wLength, 0); 1532 1533 err = USB_ERR_INVAL; 1534 1535 /* check if USB controller handles set address */ 1536 if (udev->bus->methods->set_address != NULL) 1537 err = (udev->bus->methods->set_address) (udev, mtx, addr); 1538 1539 if (err != USB_ERR_INVAL) 1540 goto done; 1541 1542 /* Setting the address should not take more than 1 second ! */ 1543 err = usbd_do_request_flags(udev, mtx, &req, NULL, 1544 USB_DELAY_STATUS_STAGE, NULL, 1000); 1545 1546done: 1547 /* allow device time to set new address */ 1548 usb_pause_mtx(mtx, 1549 USB_MS_TO_TICKS(usb_set_address_settle)); 1550 1551 return (err); 1552} 1553 1554/*------------------------------------------------------------------------* 1555 * usbd_req_get_port_status 1556 * 1557 * Returns: 1558 * 0: Success 1559 * Else: Failure 1560 *------------------------------------------------------------------------*/ 1561usb_error_t 1562usbd_req_get_port_status(struct usb_device *udev, struct mtx *mtx, 1563 struct usb_port_status *ps, uint8_t port) 1564{ 1565 struct usb_device_request req; 1566 1567 req.bmRequestType = UT_READ_CLASS_OTHER; 1568 req.bRequest = UR_GET_STATUS; 1569 USETW(req.wValue, 0); 1570 req.wIndex[0] = port; 1571 req.wIndex[1] = 0; 1572 USETW(req.wLength, sizeof *ps); 1573 return (usbd_do_request(udev, mtx, &req, ps)); 1574} 1575 1576/*------------------------------------------------------------------------* 1577 * usbd_req_clear_hub_feature 1578 * 1579 * Returns: 1580 * 0: Success 1581 * Else: Failure 1582 *------------------------------------------------------------------------*/ 1583usb_error_t 1584usbd_req_clear_hub_feature(struct usb_device *udev, struct mtx *mtx, 1585 uint16_t sel) 1586{ 1587 struct usb_device_request req; 1588 1589 req.bmRequestType = UT_WRITE_CLASS_DEVICE; 1590 req.bRequest = UR_CLEAR_FEATURE; 1591 USETW(req.wValue, sel); 1592 USETW(req.wIndex, 0); 1593 USETW(req.wLength, 0); 1594 return (usbd_do_request(udev, mtx, &req, 0)); 1595} 1596 1597/*------------------------------------------------------------------------* 1598 * usbd_req_set_hub_feature 1599 * 1600 * Returns: 1601 * 0: Success 1602 * Else: Failure 1603 *------------------------------------------------------------------------*/ 1604usb_error_t 1605usbd_req_set_hub_feature(struct usb_device *udev, struct mtx *mtx, 1606 uint16_t sel) 1607{ 1608 struct usb_device_request req; 1609 1610 req.bmRequestType = UT_WRITE_CLASS_DEVICE; 1611 req.bRequest = UR_SET_FEATURE; 1612 USETW(req.wValue, sel); 1613 USETW(req.wIndex, 0); 1614 USETW(req.wLength, 0); 1615 return (usbd_do_request(udev, mtx, &req, 0)); 1616} 1617 1618/*------------------------------------------------------------------------* 1619 * usbd_req_set_hub_u1_timeout 1620 * 1621 * Returns: 1622 * 0: Success 1623 * Else: Failure 1624 *------------------------------------------------------------------------*/ 1625usb_error_t 1626usbd_req_set_hub_u1_timeout(struct usb_device *udev, struct mtx *mtx, 1627 uint8_t port, uint8_t timeout) 1628{ 1629 struct usb_device_request req; 1630 1631 req.bmRequestType = UT_WRITE_CLASS_OTHER; 1632 req.bRequest = UR_SET_FEATURE; 1633 USETW(req.wValue, UHF_PORT_U1_TIMEOUT); 1634 req.wIndex[0] = port; 1635 req.wIndex[1] = timeout; 1636 USETW(req.wLength, 0); 1637 return (usbd_do_request(udev, mtx, &req, 0)); 1638} 1639 1640/*------------------------------------------------------------------------* 1641 * usbd_req_set_hub_u2_timeout 1642 * 1643 * Returns: 1644 * 0: Success 1645 * Else: Failure 1646 *------------------------------------------------------------------------*/ 1647usb_error_t 1648usbd_req_set_hub_u2_timeout(struct usb_device *udev, struct mtx *mtx, 1649 uint8_t port, uint8_t timeout) 1650{ 1651 struct usb_device_request req; 1652 1653 req.bmRequestType = UT_WRITE_CLASS_OTHER; 1654 req.bRequest = UR_SET_FEATURE; 1655 USETW(req.wValue, UHF_PORT_U2_TIMEOUT); 1656 req.wIndex[0] = port; 1657 req.wIndex[1] = timeout; 1658 USETW(req.wLength, 0); 1659 return (usbd_do_request(udev, mtx, &req, 0)); 1660} 1661 1662/*------------------------------------------------------------------------* 1663 * usbd_req_set_hub_depth 1664 * 1665 * Returns: 1666 * 0: Success 1667 * Else: Failure 1668 *------------------------------------------------------------------------*/ 1669usb_error_t 1670usbd_req_set_hub_depth(struct usb_device *udev, struct mtx *mtx, 1671 uint16_t depth) 1672{ 1673 struct usb_device_request req; 1674 1675 req.bmRequestType = UT_WRITE_CLASS_DEVICE; 1676 req.bRequest = UR_SET_HUB_DEPTH; 1677 USETW(req.wValue, depth); 1678 USETW(req.wIndex, 0); 1679 USETW(req.wLength, 0); 1680 return (usbd_do_request(udev, mtx, &req, 0)); 1681} 1682 1683/*------------------------------------------------------------------------* 1684 * usbd_req_clear_port_feature 1685 * 1686 * Returns: 1687 * 0: Success 1688 * Else: Failure 1689 *------------------------------------------------------------------------*/ 1690usb_error_t 1691usbd_req_clear_port_feature(struct usb_device *udev, struct mtx *mtx, 1692 uint8_t port, uint16_t sel) 1693{ 1694 struct usb_device_request req; 1695 1696 req.bmRequestType = UT_WRITE_CLASS_OTHER; 1697 req.bRequest = UR_CLEAR_FEATURE; 1698 USETW(req.wValue, sel); 1699 req.wIndex[0] = port; 1700 req.wIndex[1] = 0; 1701 USETW(req.wLength, 0); 1702 return (usbd_do_request(udev, mtx, &req, 0)); 1703} 1704 1705/*------------------------------------------------------------------------* 1706 * usbd_req_set_port_feature 1707 * 1708 * Returns: 1709 * 0: Success 1710 * Else: Failure 1711 *------------------------------------------------------------------------*/ 1712usb_error_t 1713usbd_req_set_port_feature(struct usb_device *udev, struct mtx *mtx, 1714 uint8_t port, uint16_t sel) 1715{ 1716 struct usb_device_request req; 1717 1718 req.bmRequestType = UT_WRITE_CLASS_OTHER; 1719 req.bRequest = UR_SET_FEATURE; 1720 USETW(req.wValue, sel); 1721 req.wIndex[0] = port; 1722 req.wIndex[1] = 0; 1723 USETW(req.wLength, 0); 1724 return (usbd_do_request(udev, mtx, &req, 0)); 1725} 1726 1727/*------------------------------------------------------------------------* 1728 * usbd_req_set_protocol 1729 * 1730 * Returns: 1731 * 0: Success 1732 * Else: Failure 1733 *------------------------------------------------------------------------*/ 1734usb_error_t 1735usbd_req_set_protocol(struct usb_device *udev, struct mtx *mtx, 1736 uint8_t iface_index, uint16_t report) 1737{ 1738 struct usb_interface *iface = usbd_get_iface(udev, iface_index); 1739 struct usb_device_request req; 1740 1741 if ((iface == NULL) || (iface->idesc == NULL)) { 1742 return (USB_ERR_INVAL); 1743 } 1744 DPRINTFN(5, "iface=%p, report=%d, endpt=%d\n", 1745 iface, report, iface->idesc->bInterfaceNumber); 1746 1747 req.bmRequestType = UT_WRITE_CLASS_INTERFACE; 1748 req.bRequest = UR_SET_PROTOCOL; 1749 USETW(req.wValue, report); 1750 req.wIndex[0] = iface->idesc->bInterfaceNumber; 1751 req.wIndex[1] = 0; 1752 USETW(req.wLength, 0); 1753 return (usbd_do_request(udev, mtx, &req, 0)); 1754} 1755 1756/*------------------------------------------------------------------------* 1757 * usbd_req_set_report 1758 * 1759 * Returns: 1760 * 0: Success 1761 * Else: Failure 1762 *------------------------------------------------------------------------*/ 1763usb_error_t 1764usbd_req_set_report(struct usb_device *udev, struct mtx *mtx, void *data, uint16_t len, 1765 uint8_t iface_index, uint8_t type, uint8_t id) 1766{ 1767 struct usb_interface *iface = usbd_get_iface(udev, iface_index); 1768 struct usb_device_request req; 1769 1770 if ((iface == NULL) || (iface->idesc == NULL)) { 1771 return (USB_ERR_INVAL); 1772 } 1773 DPRINTFN(5, "len=%d\n", len); 1774 1775 req.bmRequestType = UT_WRITE_CLASS_INTERFACE; 1776 req.bRequest = UR_SET_REPORT; 1777 USETW2(req.wValue, type, id); 1778 req.wIndex[0] = iface->idesc->bInterfaceNumber; 1779 req.wIndex[1] = 0; 1780 USETW(req.wLength, len); 1781 return (usbd_do_request(udev, mtx, &req, data)); 1782} 1783 1784/*------------------------------------------------------------------------* 1785 * usbd_req_get_report 1786 * 1787 * Returns: 1788 * 0: Success 1789 * Else: Failure 1790 *------------------------------------------------------------------------*/ 1791usb_error_t 1792usbd_req_get_report(struct usb_device *udev, struct mtx *mtx, void *data, 1793 uint16_t len, uint8_t iface_index, uint8_t type, uint8_t id) 1794{ 1795 struct usb_interface *iface = usbd_get_iface(udev, iface_index); 1796 struct usb_device_request req; 1797 1798 if ((iface == NULL) || (iface->idesc == NULL)) { 1799 return (USB_ERR_INVAL); 1800 } 1801 DPRINTFN(5, "len=%d\n", len); 1802 1803 req.bmRequestType = UT_READ_CLASS_INTERFACE; 1804 req.bRequest = UR_GET_REPORT; 1805 USETW2(req.wValue, type, id); 1806 req.wIndex[0] = iface->idesc->bInterfaceNumber; 1807 req.wIndex[1] = 0; 1808 USETW(req.wLength, len); 1809 return (usbd_do_request(udev, mtx, &req, data)); 1810} 1811 1812/*------------------------------------------------------------------------* 1813 * usbd_req_set_idle 1814 * 1815 * Returns: 1816 * 0: Success 1817 * Else: Failure 1818 *------------------------------------------------------------------------*/ 1819usb_error_t 1820usbd_req_set_idle(struct usb_device *udev, struct mtx *mtx, 1821 uint8_t iface_index, uint8_t duration, uint8_t id) 1822{ 1823 struct usb_interface *iface = usbd_get_iface(udev, iface_index); 1824 struct usb_device_request req; 1825 1826 if ((iface == NULL) || (iface->idesc == NULL)) { 1827 return (USB_ERR_INVAL); 1828 } 1829 DPRINTFN(5, "%d %d\n", duration, id); 1830 1831 req.bmRequestType = UT_WRITE_CLASS_INTERFACE; 1832 req.bRequest = UR_SET_IDLE; 1833 USETW2(req.wValue, duration, id); 1834 req.wIndex[0] = iface->idesc->bInterfaceNumber; 1835 req.wIndex[1] = 0; 1836 USETW(req.wLength, 0); 1837 return (usbd_do_request(udev, mtx, &req, 0)); 1838} 1839 1840/*------------------------------------------------------------------------* 1841 * usbd_req_get_report_descriptor 1842 * 1843 * Returns: 1844 * 0: Success 1845 * Else: Failure 1846 *------------------------------------------------------------------------*/ 1847usb_error_t 1848usbd_req_get_report_descriptor(struct usb_device *udev, struct mtx *mtx, 1849 void *d, uint16_t size, uint8_t iface_index) 1850{ 1851 struct usb_interface *iface = usbd_get_iface(udev, iface_index); 1852 struct usb_device_request req; 1853 1854 if ((iface == NULL) || (iface->idesc == NULL)) { 1855 return (USB_ERR_INVAL); 1856 } 1857 req.bmRequestType = UT_READ_INTERFACE; 1858 req.bRequest = UR_GET_DESCRIPTOR; 1859 USETW2(req.wValue, UDESC_REPORT, 0); /* report id should be 0 */ 1860 req.wIndex[0] = iface->idesc->bInterfaceNumber; 1861 req.wIndex[1] = 0; 1862 USETW(req.wLength, size); 1863 return (usbd_do_request(udev, mtx, &req, d)); 1864} 1865 1866/*------------------------------------------------------------------------* 1867 * usbd_req_set_config 1868 * 1869 * This function is used to select the current configuration number in 1870 * both USB device side mode and USB host side mode. When setting the 1871 * configuration the function of the interfaces can change. 1872 * 1873 * Returns: 1874 * 0: Success 1875 * Else: Failure 1876 *------------------------------------------------------------------------*/ 1877usb_error_t 1878usbd_req_set_config(struct usb_device *udev, struct mtx *mtx, uint8_t conf) 1879{ 1880 struct usb_device_request req; 1881 1882 DPRINTF("setting config %d\n", conf); 1883 1884 /* do "set configuration" request */ 1885 1886 req.bmRequestType = UT_WRITE_DEVICE; 1887 req.bRequest = UR_SET_CONFIG; 1888 req.wValue[0] = conf; 1889 req.wValue[1] = 0; 1890 USETW(req.wIndex, 0); 1891 USETW(req.wLength, 0); 1892 return (usbd_do_request(udev, mtx, &req, 0)); 1893} 1894 1895/*------------------------------------------------------------------------* 1896 * usbd_req_get_config 1897 * 1898 * Returns: 1899 * 0: Success 1900 * Else: Failure 1901 *------------------------------------------------------------------------*/ 1902usb_error_t 1903usbd_req_get_config(struct usb_device *udev, struct mtx *mtx, uint8_t *pconf) 1904{ 1905 struct usb_device_request req; 1906 1907 req.bmRequestType = UT_READ_DEVICE; 1908 req.bRequest = UR_GET_CONFIG; 1909 USETW(req.wValue, 0); 1910 USETW(req.wIndex, 0); 1911 USETW(req.wLength, 1); 1912 return (usbd_do_request(udev, mtx, &req, pconf)); 1913} 1914 1915/*------------------------------------------------------------------------* 1916 * usbd_setup_device_desc 1917 *------------------------------------------------------------------------*/ 1918usb_error_t 1919usbd_setup_device_desc(struct usb_device *udev, struct mtx *mtx) 1920{ 1921 usb_error_t err; 1922 1923 /* 1924 * Get the first 8 bytes of the device descriptor ! 1925 * 1926 * NOTE: "usbd_do_request()" will check the device descriptor 1927 * next time we do a request to see if the maximum packet size 1928 * changed! The 8 first bytes of the device descriptor 1929 * contains the maximum packet size to use on control endpoint 1930 * 0. If this value is different from "USB_MAX_IPACKET" a new 1931 * USB control request will be setup! 1932 */ 1933 switch (udev->speed) { 1934 case USB_SPEED_FULL: 1935 if (usb_full_ddesc != 0) { 1936 /* get full device descriptor */ 1937 err = usbd_req_get_device_desc(udev, mtx, &udev->ddesc); 1938 if (err == 0) 1939 break; 1940 } 1941 1942 /* get partial device descriptor, some devices crash on this */ 1943 err = usbd_req_get_desc(udev, mtx, NULL, &udev->ddesc, 1944 USB_MAX_IPACKET, USB_MAX_IPACKET, 0, UDESC_DEVICE, 0, 0); 1945 if (err != 0) 1946 break; 1947 1948 /* get the full device descriptor */ 1949 err = usbd_req_get_device_desc(udev, mtx, &udev->ddesc); 1950 break; 1951 1952 default: 1953 DPRINTF("Minimum bMaxPacketSize is large enough " 1954 "to hold the complete device descriptor or " 1955 "only one bMaxPacketSize choice\n"); 1956 1957 /* get the full device descriptor */ 1958 err = usbd_req_get_device_desc(udev, mtx, &udev->ddesc); 1959 1960 /* try one more time, if error */ 1961 if (err != 0) 1962 err = usbd_req_get_device_desc(udev, mtx, &udev->ddesc); 1963 break; 1964 } 1965 1966 if (err != 0) { 1967 DPRINTFN(0, "getting device descriptor " 1968 "at addr %d failed, %s\n", udev->address, 1969 usbd_errstr(err)); 1970 return (err); 1971 } 1972 1973 DPRINTF("adding unit addr=%d, rev=%02x, class=%d, " 1974 "subclass=%d, protocol=%d, maxpacket=%d, len=%d, speed=%d\n", 1975 udev->address, UGETW(udev->ddesc.bcdUSB), 1976 udev->ddesc.bDeviceClass, 1977 udev->ddesc.bDeviceSubClass, 1978 udev->ddesc.bDeviceProtocol, 1979 udev->ddesc.bMaxPacketSize, 1980 udev->ddesc.bLength, 1981 udev->speed); 1982 1983 return (err); 1984} 1985 1986/*------------------------------------------------------------------------* 1987 * usbd_req_re_enumerate 1988 * 1989 * NOTE: After this function returns the hardware is in the 1990 * unconfigured state! The application is responsible for setting a 1991 * new configuration. 1992 * 1993 * Returns: 1994 * 0: Success 1995 * Else: Failure 1996 *------------------------------------------------------------------------*/ 1997usb_error_t 1998usbd_req_re_enumerate(struct usb_device *udev, struct mtx *mtx) 1999{ 2000 struct usb_device *parent_hub; 2001 usb_error_t err; 2002 uint8_t old_addr; 2003 uint8_t do_retry = 1; 2004 2005 if (udev->flags.usb_mode != USB_MODE_HOST) { 2006 return (USB_ERR_INVAL); 2007 } 2008 old_addr = udev->address; 2009 parent_hub = udev->parent_hub; 2010 if (parent_hub == NULL) { 2011 return (USB_ERR_INVAL); 2012 } 2013retry: 2014 /* 2015 * Try to reset the High Speed parent HUB of a LOW- or FULL- 2016 * speed device, if any. 2017 */ 2018 if (udev->parent_hs_hub != NULL && 2019 udev->speed != USB_SPEED_HIGH) { 2020 DPRINTF("Trying to reset parent High Speed TT.\n"); 2021 err = usbd_req_reset_tt(udev->parent_hs_hub, NULL, 2022 udev->hs_port_no); 2023 if (err) { 2024 DPRINTF("Resetting parent High " 2025 "Speed TT failed (%s).\n", 2026 usbd_errstr(err)); 2027 } 2028 } 2029 2030 /* Try to warm reset first */ 2031 if (parent_hub->speed == USB_SPEED_SUPER) 2032 usbd_req_warm_reset_port(parent_hub, mtx, udev->port_no); 2033 2034 /* Try to reset the parent HUB port. */ 2035 err = usbd_req_reset_port(parent_hub, mtx, udev->port_no); 2036 if (err) { 2037 DPRINTFN(0, "addr=%d, port reset failed, %s\n", 2038 old_addr, usbd_errstr(err)); 2039 goto done; 2040 } 2041 2042 /* 2043 * After that the port has been reset our device should be at 2044 * address zero: 2045 */ 2046 udev->address = USB_START_ADDR; 2047 2048 /* reset "bMaxPacketSize" */ 2049 udev->ddesc.bMaxPacketSize = USB_MAX_IPACKET; 2050 2051 /* reset USB state */ 2052 usb_set_device_state(udev, USB_STATE_POWERED); 2053 2054 /* 2055 * Restore device address: 2056 */ 2057 err = usbd_req_set_address(udev, mtx, old_addr); 2058 if (err) { 2059 /* XXX ignore any errors! */ 2060 DPRINTFN(0, "addr=%d, set address failed! (%s, ignored)\n", 2061 old_addr, usbd_errstr(err)); 2062 } 2063 /* 2064 * Restore device address, if the controller driver did not 2065 * set a new one: 2066 */ 2067 if (udev->address == USB_START_ADDR) 2068 udev->address = old_addr; 2069 2070 /* setup the device descriptor and the initial "wMaxPacketSize" */ 2071 err = usbd_setup_device_desc(udev, mtx); 2072 2073done: 2074 if (err && do_retry) { 2075 /* give the USB firmware some time to load */ 2076 usb_pause_mtx(mtx, hz / 2); 2077 /* no more retries after this retry */ 2078 do_retry = 0; 2079 /* try again */ 2080 goto retry; 2081 } 2082 /* restore address */ 2083 if (udev->address == USB_START_ADDR) 2084 udev->address = old_addr; 2085 /* update state, if successful */ 2086 if (err == 0) 2087 usb_set_device_state(udev, USB_STATE_ADDRESSED); 2088 return (err); 2089} 2090 2091/*------------------------------------------------------------------------* 2092 * usbd_req_clear_device_feature 2093 * 2094 * Returns: 2095 * 0: Success 2096 * Else: Failure 2097 *------------------------------------------------------------------------*/ 2098usb_error_t 2099usbd_req_clear_device_feature(struct usb_device *udev, struct mtx *mtx, 2100 uint16_t sel) 2101{ 2102 struct usb_device_request req; 2103 2104 req.bmRequestType = UT_WRITE_DEVICE; 2105 req.bRequest = UR_CLEAR_FEATURE; 2106 USETW(req.wValue, sel); 2107 USETW(req.wIndex, 0); 2108 USETW(req.wLength, 0); 2109 return (usbd_do_request(udev, mtx, &req, 0)); 2110} 2111 2112/*------------------------------------------------------------------------* 2113 * usbd_req_set_device_feature 2114 * 2115 * Returns: 2116 * 0: Success 2117 * Else: Failure 2118 *------------------------------------------------------------------------*/ 2119usb_error_t 2120usbd_req_set_device_feature(struct usb_device *udev, struct mtx *mtx, 2121 uint16_t sel) 2122{ 2123 struct usb_device_request req; 2124 2125 req.bmRequestType = UT_WRITE_DEVICE; 2126 req.bRequest = UR_SET_FEATURE; 2127 USETW(req.wValue, sel); 2128 USETW(req.wIndex, 0); 2129 USETW(req.wLength, 0); 2130 return (usbd_do_request(udev, mtx, &req, 0)); 2131} 2132 2133/*------------------------------------------------------------------------* 2134 * usbd_req_reset_tt 2135 * 2136 * Returns: 2137 * 0: Success 2138 * Else: Failure 2139 *------------------------------------------------------------------------*/ 2140usb_error_t 2141usbd_req_reset_tt(struct usb_device *udev, struct mtx *mtx, 2142 uint8_t port) 2143{ 2144 struct usb_device_request req; 2145 2146 /* For single TT HUBs the port should be 1 */ 2147 2148 if (udev->ddesc.bDeviceClass == UDCLASS_HUB && 2149 udev->ddesc.bDeviceProtocol == UDPROTO_HSHUBSTT) 2150 port = 1; 2151 2152 req.bmRequestType = UT_WRITE_CLASS_OTHER; 2153 req.bRequest = UR_RESET_TT; 2154 USETW(req.wValue, 0); 2155 req.wIndex[0] = port; 2156 req.wIndex[1] = 0; 2157 USETW(req.wLength, 0); 2158 return (usbd_do_request(udev, mtx, &req, 0)); 2159} 2160 2161/*------------------------------------------------------------------------* 2162 * usbd_req_clear_tt_buffer 2163 * 2164 * For single TT HUBs the port should be 1. 2165 * 2166 * Returns: 2167 * 0: Success 2168 * Else: Failure 2169 *------------------------------------------------------------------------*/ 2170usb_error_t 2171usbd_req_clear_tt_buffer(struct usb_device *udev, struct mtx *mtx, 2172 uint8_t port, uint8_t addr, uint8_t type, uint8_t endpoint) 2173{ 2174 struct usb_device_request req; 2175 uint16_t wValue; 2176 2177 /* For single TT HUBs the port should be 1 */ 2178 2179 if (udev->ddesc.bDeviceClass == UDCLASS_HUB && 2180 udev->ddesc.bDeviceProtocol == UDPROTO_HSHUBSTT) 2181 port = 1; 2182 2183 wValue = (endpoint & 0xF) | ((addr & 0x7F) << 4) | 2184 ((endpoint & 0x80) << 8) | ((type & 3) << 12); 2185 2186 req.bmRequestType = UT_WRITE_CLASS_OTHER; 2187 req.bRequest = UR_CLEAR_TT_BUFFER; 2188 USETW(req.wValue, wValue); 2189 req.wIndex[0] = port; 2190 req.wIndex[1] = 0; 2191 USETW(req.wLength, 0); 2192 return (usbd_do_request(udev, mtx, &req, 0)); 2193} 2194 2195/*------------------------------------------------------------------------* 2196 * usbd_req_set_port_link_state 2197 * 2198 * USB 3.0 specific request 2199 * 2200 * Returns: 2201 * 0: Success 2202 * Else: Failure 2203 *------------------------------------------------------------------------*/ 2204usb_error_t 2205usbd_req_set_port_link_state(struct usb_device *udev, struct mtx *mtx, 2206 uint8_t port, uint8_t link_state) 2207{ 2208 struct usb_device_request req; 2209 2210 req.bmRequestType = UT_WRITE_CLASS_OTHER; 2211 req.bRequest = UR_SET_FEATURE; 2212 USETW(req.wValue, UHF_PORT_LINK_STATE); 2213 req.wIndex[0] = port; 2214 req.wIndex[1] = link_state; 2215 USETW(req.wLength, 0); 2216 return (usbd_do_request(udev, mtx, &req, 0)); 2217} 2218 2219/*------------------------------------------------------------------------* 2220 * usbd_req_set_lpm_info 2221 * 2222 * USB 2.0 specific request for Link Power Management. 2223 * 2224 * Returns: 2225 * 0: Success 2226 * USB_ERR_PENDING_REQUESTS: NYET 2227 * USB_ERR_TIMEOUT: TIMEOUT 2228 * USB_ERR_STALL: STALL 2229 * Else: Failure 2230 *------------------------------------------------------------------------*/ 2231usb_error_t 2232usbd_req_set_lpm_info(struct usb_device *udev, struct mtx *mtx, 2233 uint8_t port, uint8_t besl, uint8_t addr, uint8_t rwe) 2234{ 2235 struct usb_device_request req; 2236 usb_error_t err; 2237 uint8_t buf[1]; 2238 2239 req.bmRequestType = UT_WRITE_CLASS_OTHER; 2240 req.bRequest = UR_SET_AND_TEST; 2241 USETW(req.wValue, UHF_PORT_L1); 2242 req.wIndex[0] = (port & 0xF) | ((besl & 0xF) << 4); 2243 req.wIndex[1] = (addr & 0x7F) | (rwe ? 0x80 : 0x00); 2244 USETW(req.wLength, sizeof(buf)); 2245 2246 /* set default value in case of short transfer */ 2247 buf[0] = 0x00; 2248 2249 err = usbd_do_request(udev, mtx, &req, buf); 2250 if (err) 2251 return (err); 2252 2253 switch (buf[0]) { 2254 case 0x00: /* SUCCESS */ 2255 break; 2256 case 0x10: /* NYET */ 2257 err = USB_ERR_PENDING_REQUESTS; 2258 break; 2259 case 0x11: /* TIMEOUT */ 2260 err = USB_ERR_TIMEOUT; 2261 break; 2262 case 0x30: /* STALL */ 2263 err = USB_ERR_STALLED; 2264 break; 2265 default: /* reserved */ 2266 err = USB_ERR_IOERROR; 2267 break; 2268 } 2269 return (err); 2270} 2271 2272