3 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
5 * Copyright (c) 1998 The NetBSD Foundation, Inc. All rights reserved.
6 * Copyright (c) 1998 Lennart Augustsson. All rights reserved.
7 * Copyright (c) 2008 Hans Petter Selasky. All rights reserved.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 #ifdef USB_GLOBAL_INCLUDE_FILE
32 #include USB_GLOBAL_INCLUDE_FILE
34 #include <sys/stdint.h>
35 #include <sys/stddef.h>
36 #include <sys/param.h>
37 #include <sys/queue.h>
38 #include <sys/types.h>
39 #include <sys/systm.h>
40 #include <sys/kernel.h>
42 #include <sys/module.h>
44 #include <sys/mutex.h>
45 #include <sys/condvar.h>
46 #include <sys/sysctl.h>
48 #include <sys/unistd.h>
49 #include <sys/callout.h>
50 #include <sys/malloc.h>
53 #include <dev/usb/usb.h>
54 #include <dev/usb/usbdi.h>
55 #include <dev/usb/usbdi_util.h>
56 #include <dev/usb/usbhid.h>
58 #define USB_DEBUG_VAR usb_debug
60 #include <dev/usb/usb_core.h>
61 #include <dev/usb/usb_busdma.h>
62 #include <dev/usb/usb_request.h>
63 #include <dev/usb/usb_process.h>
64 #include <dev/usb/usb_transfer.h>
65 #include <dev/usb/usb_debug.h>
66 #include <dev/usb/usb_device.h>
67 #include <dev/usb/usb_util.h>
68 #include <dev/usb/usb_dynamic.h>
70 #include <dev/usb/usb_controller.h>
71 #include <dev/usb/usb_bus.h>
72 #include <sys/ctype.h>
73 #endif /* USB_GLOBAL_INCLUDE_FILE */
75 static int usb_no_cs_fail;
77 SYSCTL_INT(_hw_usb, OID_AUTO, no_cs_fail, CTLFLAG_RWTUN,
78 &usb_no_cs_fail, 0, "USB clear stall failures are ignored, if set");
80 static int usb_full_ddesc;
82 SYSCTL_INT(_hw_usb, OID_AUTO, full_ddesc, CTLFLAG_RWTUN,
83 &usb_full_ddesc, 0, "USB always read complete device descriptor, if set");
87 /* The following structures are used in connection to fault injection. */
88 struct usb_ctrl_debug {
89 int bus_index; /* target bus */
90 int dev_index; /* target address */
91 int ds_fail; /* fail data stage */
92 int ss_fail; /* fail status stage */
93 int ds_delay; /* data stage delay in ms */
94 int ss_delay; /* status stage delay in ms */
95 int bmRequestType_value;
99 struct usb_ctrl_debug_bits {
107 /* The default is to disable fault injection. */
109 static struct usb_ctrl_debug usb_ctrl_debug = {
112 .bmRequestType_value = -1,
113 .bRequest_value = -1,
116 SYSCTL_INT(_hw_usb, OID_AUTO, ctrl_bus_fail, CTLFLAG_RWTUN,
117 &usb_ctrl_debug.bus_index, 0, "USB controller index to fail");
118 SYSCTL_INT(_hw_usb, OID_AUTO, ctrl_dev_fail, CTLFLAG_RWTUN,
119 &usb_ctrl_debug.dev_index, 0, "USB device address to fail");
120 SYSCTL_INT(_hw_usb, OID_AUTO, ctrl_ds_fail, CTLFLAG_RWTUN,
121 &usb_ctrl_debug.ds_fail, 0, "USB fail data stage");
122 SYSCTL_INT(_hw_usb, OID_AUTO, ctrl_ss_fail, CTLFLAG_RWTUN,
123 &usb_ctrl_debug.ss_fail, 0, "USB fail status stage");
124 SYSCTL_INT(_hw_usb, OID_AUTO, ctrl_ds_delay, CTLFLAG_RWTUN,
125 &usb_ctrl_debug.ds_delay, 0, "USB data stage delay in ms");
126 SYSCTL_INT(_hw_usb, OID_AUTO, ctrl_ss_delay, CTLFLAG_RWTUN,
127 &usb_ctrl_debug.ss_delay, 0, "USB status stage delay in ms");
128 SYSCTL_INT(_hw_usb, OID_AUTO, ctrl_rt_fail, CTLFLAG_RWTUN,
129 &usb_ctrl_debug.bmRequestType_value, 0, "USB bmRequestType to fail");
130 SYSCTL_INT(_hw_usb, OID_AUTO, ctrl_rv_fail, CTLFLAG_RWTUN,
131 &usb_ctrl_debug.bRequest_value, 0, "USB bRequest to fail");
133 /*------------------------------------------------------------------------*
134 * usbd_get_debug_bits
136 * This function is only useful in USB host mode.
137 *------------------------------------------------------------------------*/
139 usbd_get_debug_bits(struct usb_device *udev, struct usb_device_request *req,
140 struct usb_ctrl_debug_bits *dbg)
144 memset(dbg, 0, sizeof(*dbg));
146 /* Compute data stage delay */
148 temp = usb_ctrl_debug.ds_delay;
151 else if (temp > (16*1024))
154 dbg->ds_delay = temp;
156 /* Compute status stage delay */
158 temp = usb_ctrl_debug.ss_delay;
161 else if (temp > (16*1024))
164 dbg->ss_delay = temp;
166 /* Check if this control request should be failed */
168 if (usbd_get_bus_index(udev) != usb_ctrl_debug.bus_index)
171 if (usbd_get_device_index(udev) != usb_ctrl_debug.dev_index)
174 temp = usb_ctrl_debug.bmRequestType_value;
176 if ((temp != req->bmRequestType) && (temp >= 0) && (temp <= 255))
179 temp = usb_ctrl_debug.bRequest_value;
181 if ((temp != req->bRequest) && (temp >= 0) && (temp <= 255))
184 temp = usb_ctrl_debug.ds_fail;
188 temp = usb_ctrl_debug.ss_fail;
194 #endif /* USB_REQ_DEBUG */
195 #endif /* USB_DEBUG */
197 /*------------------------------------------------------------------------*
198 * usbd_do_request_callback
200 * This function is the USB callback for generic USB Host control
202 *------------------------------------------------------------------------*/
204 usbd_do_request_callback(struct usb_xfer *xfer, usb_error_t error)
206 ; /* workaround for a bug in "indent" */
208 DPRINTF("st=%u\n", USB_GET_STATE(xfer));
210 switch (USB_GET_STATE(xfer)) {
212 usbd_transfer_submit(xfer);
215 cv_signal(&xfer->xroot->udev->ctrlreq_cv);
220 /*------------------------------------------------------------------------*
221 * usb_do_clear_stall_callback
223 * This function is the USB callback for generic clear stall requests.
224 *------------------------------------------------------------------------*/
226 usb_do_clear_stall_callback(struct usb_xfer *xfer, usb_error_t error)
228 struct usb_device_request req;
229 struct usb_device *udev;
230 struct usb_endpoint *ep;
231 struct usb_endpoint *ep_end;
232 struct usb_endpoint *ep_first;
236 udev = xfer->xroot->udev;
238 USB_BUS_LOCK(udev->bus);
240 /* round robin endpoint clear stall */
243 ep_end = udev->endpoints + udev->endpoints_max;
244 ep_first = udev->endpoints;
245 to = udev->endpoints_max;
247 switch (USB_GET_STATE(xfer)) {
248 case USB_ST_TRANSFERRED:
250 /* reset error counter */
251 udev->clear_stall_errors = 0;
254 goto tr_setup; /* device was unconfigured */
259 /* some hardware needs a callback to clear the data toggle */
260 usbd_clear_stall_locked(udev, ep);
261 for (x = 0; x != USB_MAX_EP_STREAMS; x++) {
262 /* start the current or next transfer, if any */
263 usb_command_wrapper(&ep->endpoint_q[x],
264 ep->endpoint_q[x].curr);
272 break; /* no endpoints - nothing to do */
273 if ((ep < ep_first) || (ep >= ep_end))
274 ep = ep_first; /* endpoint wrapped around */
278 /* setup a clear-stall packet */
280 req.bmRequestType = UT_WRITE_ENDPOINT;
281 req.bRequest = UR_CLEAR_FEATURE;
282 USETW(req.wValue, UF_ENDPOINT_HALT);
283 req.wIndex[0] = ep->edesc->bEndpointAddress;
285 USETW(req.wLength, 0);
287 /* copy in the transfer */
289 usbd_copy_in(xfer->frbuffers, 0, &req, sizeof(req));
292 usbd_xfer_set_frame_len(xfer, 0, sizeof(req));
294 USB_BUS_UNLOCK(udev->bus);
296 usbd_transfer_submit(xfer);
298 USB_BUS_LOCK(udev->bus);
306 if (error == USB_ERR_CANCELLED)
309 DPRINTF("Clear stall failed.\n");
312 * Some VMs like VirtualBox always return failure on
313 * clear-stall which we sometimes should just ignore.
317 if (udev->clear_stall_errors == USB_CS_RESET_LIMIT)
320 if (error == USB_ERR_TIMEOUT) {
321 udev->clear_stall_errors = USB_CS_RESET_LIMIT;
322 DPRINTF("Trying to re-enumerate.\n");
323 usbd_start_re_enumerate(udev);
325 udev->clear_stall_errors++;
326 if (udev->clear_stall_errors == USB_CS_RESET_LIMIT) {
327 DPRINTF("Trying to re-enumerate.\n");
328 usbd_start_re_enumerate(udev);
334 /* store current endpoint */
336 USB_BUS_UNLOCK(udev->bus);
339 static usb_handle_req_t *
340 usbd_get_hr_func(struct usb_device *udev)
342 /* figure out if there is a Handle Request function */
343 if (udev->flags.usb_mode == USB_MODE_DEVICE)
344 return (usb_temp_get_desc_p);
345 else if (udev->parent_hub == NULL)
346 return (udev->bus->methods->roothub_exec);
351 /*------------------------------------------------------------------------*
352 * usbd_do_request_flags and usbd_do_request
354 * Description of arguments passed to these functions:
356 * "udev" - this is the "usb_device" structure pointer on which the
357 * request should be performed. It is possible to call this function
358 * in both Host Side mode and Device Side mode.
360 * "mtx" - if this argument is non-NULL the mutex pointed to by it
361 * will get dropped and picked up during the execution of this
362 * function, hence this function sometimes needs to sleep. If this
363 * argument is NULL it has no effect.
365 * "req" - this argument must always be non-NULL and points to an
366 * 8-byte structure holding the USB request to be done. The USB
367 * request structure has a bit telling the direction of the USB
368 * request, if it is a read or a write.
370 * "data" - if the "wLength" part of the structure pointed to by "req"
371 * is non-zero this argument must point to a valid kernel buffer which
372 * can hold at least "wLength" bytes. If "wLength" is zero "data" can
375 * "flags" - here is a list of valid flags:
377 * o USB_SHORT_XFER_OK: allows the data transfer to be shorter than
380 * o USB_DELAY_STATUS_STAGE: allows the status stage to be performed
381 * at a later point in time. This is tunable by the "hw.usb.ss_delay"
382 * sysctl. This flag is mostly useful for debugging.
384 * o USB_USER_DATA_PTR: treat the "data" pointer like a userland
387 * "actlen" - if non-NULL the actual transfer length will be stored in
388 * the 16-bit unsigned integer pointed to by "actlen". This
389 * information is mostly useful when the "USB_SHORT_XFER_OK" flag is
392 * "timeout" - gives the timeout for the control transfer in
393 * milliseconds. A "timeout" value less than 50 milliseconds is
394 * treated like a 50 millisecond timeout. A "timeout" value greater
395 * than 30 seconds is treated like a 30 second timeout. This USB stack
396 * does not allow control requests without a timeout.
398 * NOTE: This function is thread safe. All calls to "usbd_do_request_flags"
399 * will be serialized by the use of the USB device enumeration lock.
404 *------------------------------------------------------------------------*/
406 usbd_do_request_flags(struct usb_device *udev, struct mtx *mtx,
407 struct usb_device_request *req, void *data, uint16_t flags,
408 uint16_t *actlen, usb_timeout_t timeout)
411 struct usb_ctrl_debug_bits dbg;
413 usb_handle_req_t *hr_func;
414 struct usb_xfer *xfer;
417 usb_ticks_t start_ticks;
418 usb_ticks_t delta_ticks;
419 usb_ticks_t max_ticks;
426 /* timeout is too small */
429 if (timeout > 30000) {
430 /* timeout is too big */
433 length = UGETW(req->wLength);
435 DPRINTFN(5, "udev=%p bmRequestType=0x%02x bRequest=0x%02x "
436 "wValue=0x%02x%02x wIndex=0x%02x%02x wLength=0x%02x%02x\n",
437 udev, req->bmRequestType, req->bRequest,
438 req->wValue[1], req->wValue[0],
439 req->wIndex[1], req->wIndex[0],
440 req->wLength[1], req->wLength[0]);
442 /* Check if the device is still alive */
443 if (udev->state < USB_STATE_POWERED) {
444 DPRINTF("usb device has gone\n");
445 return (USB_ERR_NOT_CONFIGURED);
449 * Set "actlen" to a known value in case the caller does not
450 * check the return value:
455 #if (USB_HAVE_USER_IO == 0)
456 if (flags & USB_USER_DATA_PTR)
457 return (USB_ERR_INVAL);
459 if ((mtx != NULL) && (mtx != &Giant)) {
461 USB_MTX_ASSERT(mtx, MA_NOTOWNED);
465 * Serialize access to this function:
467 do_unlock = usbd_ctrl_lock(udev);
469 hr_func = usbd_get_hr_func(udev);
471 if (hr_func != NULL) {
472 DPRINTF("Handle Request function is set\n");
477 if (!(req->bmRequestType & UT_READ)) {
479 DPRINTFN(1, "The handle request function "
480 "does not support writing data!\n");
486 /* The root HUB code needs the BUS lock locked */
488 USB_BUS_LOCK(udev->bus);
489 err = (hr_func) (udev, req, &desc, &temp);
490 USB_BUS_UNLOCK(udev->bus);
496 if (!(flags & USB_SHORT_XFER_OK)) {
497 err = USB_ERR_SHORT_XFER;
507 if (flags & USB_USER_DATA_PTR) {
508 if (copyout(desc, data, length)) {
514 memcpy(data, desc, length);
516 goto done; /* success */
520 * Setup a new USB transfer or use the existing one, if any:
522 usbd_ctrl_transfer_setup(udev);
524 xfer = udev->ctrl_xfer[0];
526 /* most likely out of memory */
533 usbd_get_debug_bits(udev, req, &dbg);
535 /* Check for fault injection */
537 flags |= USB_DELAY_STATUS_STAGE;
541 if (flags & USB_DELAY_STATUS_STAGE)
542 xfer->flags.manual_status = 1;
544 xfer->flags.manual_status = 0;
546 if (flags & USB_SHORT_XFER_OK)
547 xfer->flags.short_xfer_ok = 1;
549 xfer->flags.short_xfer_ok = 0;
551 xfer->timeout = timeout;
555 max_ticks = USB_MS_TO_TICKS(timeout);
557 usbd_copy_in(xfer->frbuffers, 0, req, sizeof(*req));
559 usbd_xfer_set_frame_len(xfer, 0, sizeof(*req));
563 if (temp > usbd_xfer_max_len(xfer)) {
564 temp = usbd_xfer_max_len(xfer);
567 if (xfer->flags.manual_status) {
568 if (usbd_xfer_frame_len(xfer, 0) != 0) {
569 /* Execute data stage separately */
571 } else if (temp > 0) {
576 if (dbg.ds_delay > 0) {
578 xfer->xroot->xfer_mtx,
579 USB_MS_TO_TICKS(dbg.ds_delay));
580 /* make sure we don't time out */
586 usbd_xfer_set_frame_len(xfer, 1, temp);
589 if (!(req->bmRequestType & UT_READ)) {
591 if (flags & USB_USER_DATA_PTR) {
592 USB_XFER_UNLOCK(xfer);
593 err = usbd_copy_in_user(xfer->frbuffers + 1,
602 usbd_copy_in(xfer->frbuffers + 1,
605 usbd_xfer_set_frames(xfer, 2);
607 if (usbd_xfer_frame_len(xfer, 0) == 0) {
608 if (xfer->flags.manual_status) {
614 if (dbg.ss_delay > 0) {
616 xfer->xroot->xfer_mtx,
617 USB_MS_TO_TICKS(dbg.ss_delay));
618 /* make sure we don't time out */
622 xfer->flags.manual_status = 0;
627 usbd_xfer_set_frames(xfer, 1);
630 usbd_transfer_start(xfer);
632 while (usbd_transfer_pending(xfer)) {
633 cv_wait(&udev->ctrlreq_cv,
634 xfer->xroot->xfer_mtx);
643 /* get actual length of DATA stage */
645 if (xfer->aframes < 2) {
648 acttemp = usbd_xfer_frame_len(xfer, 1);
651 /* check for short packet */
653 if (temp > acttemp) {
658 if (req->bmRequestType & UT_READ) {
660 if (flags & USB_USER_DATA_PTR) {
661 USB_XFER_UNLOCK(xfer);
662 err = usbd_copy_out_user(xfer->frbuffers + 1,
671 usbd_copy_out(xfer->frbuffers + 1,
676 * Clear "frlengths[0]" so that we don't send the setup
679 usbd_xfer_set_frame_len(xfer, 0, 0);
681 /* update length and data pointer */
683 data = USB_ADD_BYTES(data, temp);
688 /* check for timeout */
690 delta_ticks = ticks - start_ticks;
691 if (delta_ticks > max_ticks) {
693 err = USB_ERR_TIMEOUT;
703 * Make sure that the control endpoint is no longer
704 * blocked in case of a non-transfer related error:
706 usbd_transfer_stop(xfer);
708 USB_XFER_UNLOCK(xfer);
712 usbd_ctrl_unlock(udev);
714 if ((mtx != NULL) && (mtx != &Giant))
718 case USB_ERR_NORMAL_COMPLETION:
719 case USB_ERR_SHORT_XFER:
720 case USB_ERR_STALLED:
721 case USB_ERR_CANCELLED:
724 DPRINTF("error=%s - waiting a bit for TT cleanup\n",
726 usb_pause_mtx(mtx, hz / 16);
729 return ((usb_error_t)err);
732 /*------------------------------------------------------------------------*
733 * usbd_do_request_proc - factored out code
735 * This function is factored out code. It does basically the same like
736 * usbd_do_request_flags, except it will check the status of the
737 * passed process argument before doing the USB request. If the
738 * process is draining the USB_ERR_IOERROR code will be returned. It
739 * is assumed that the mutex associated with the process is locked
740 * when calling this function.
741 *------------------------------------------------------------------------*/
743 usbd_do_request_proc(struct usb_device *udev, struct usb_process *pproc,
744 struct usb_device_request *req, void *data, uint16_t flags,
745 uint16_t *actlen, usb_timeout_t timeout)
750 /* get request data length */
751 len = UGETW(req->wLength);
753 /* check if the device is being detached */
754 if (usb_proc_is_gone(pproc)) {
755 err = USB_ERR_IOERROR;
759 /* forward the USB request */
760 err = usbd_do_request_flags(udev, pproc->up_mtx,
761 req, data, flags, actlen, timeout);
764 /* on failure we zero the data */
765 /* on short packet we zero the unused data */
766 if ((len != 0) && (req->bmRequestType & UE_DIR_IN)) {
768 memset(data, 0, len);
769 else if (actlen && *actlen != len)
770 memset(((uint8_t *)data) + *actlen, 0, len - *actlen);
775 /*------------------------------------------------------------------------*
776 * usbd_req_reset_port
778 * This function will instruct a USB HUB to perform a reset sequence
779 * on the specified port number.
782 * 0: Success. The USB device should now be at address zero.
783 * Else: Failure. No USB device is present and the USB port should be
785 *------------------------------------------------------------------------*/
787 usbd_req_reset_port(struct usb_device *udev, struct mtx *mtx, uint8_t port)
789 struct usb_port_status ps;
797 /* clear any leftover port reset changes first */
798 usbd_req_clear_port_feature(
799 udev, mtx, port, UHF_C_PORT_RESET);
801 /* assert port reset on the given port */
802 err = usbd_req_set_port_feature(
803 udev, mtx, port, UHF_PORT_RESET);
805 /* check for errors */
810 /* wait for the device to recover from reset */
811 usb_pause_mtx(mtx, USB_MS_TO_TICKS(usb_port_reset_delay));
812 n += usb_port_reset_delay;
813 err = usbd_req_get_port_status(udev, mtx, &ps, port);
817 status = UGETW(ps.wPortStatus);
818 change = UGETW(ps.wPortChange);
820 /* if the device disappeared, just give up */
821 if (!(status & UPS_CURRENT_CONNECT_STATUS))
824 /* check if reset is complete */
825 if (change & UPS_C_PORT_RESET)
829 * Some Virtual Machines like VirtualBox 4.x fail to
830 * generate a port reset change event. Check if reset
831 * is no longer asserted.
833 if (!(status & UPS_RESET))
836 /* check for timeout */
843 /* clear port reset first */
844 err = usbd_req_clear_port_feature(
845 udev, mtx, port, UHF_C_PORT_RESET);
849 /* check for timeout */
851 err = USB_ERR_TIMEOUT;
854 /* wait for the device to recover from reset */
855 usb_pause_mtx(mtx, USB_MS_TO_TICKS(usb_port_reset_recovery));
858 DPRINTFN(2, "port %d reset returning error=%s\n",
859 port, usbd_errstr(err));
863 /*------------------------------------------------------------------------*
864 * usbd_req_warm_reset_port
866 * This function will instruct an USB HUB to perform a warm reset
867 * sequence on the specified port number. This kind of reset is not
868 * mandatory for LOW-, FULL- and HIGH-speed USB HUBs and is targeted
869 * for SUPER-speed USB HUBs.
872 * 0: Success. The USB device should now be available again.
873 * Else: Failure. No USB device is present and the USB port should be
875 *------------------------------------------------------------------------*/
877 usbd_req_warm_reset_port(struct usb_device *udev, struct mtx *mtx,
880 struct usb_port_status ps;
888 err = usbd_req_get_port_status(udev, mtx, &ps, port);
892 status = UGETW(ps.wPortStatus);
894 switch (UPS_PORT_LINK_STATE_GET(status)) {
896 case UPS_PORT_LS_COMP_MODE:
897 case UPS_PORT_LS_LOOPBACK:
898 case UPS_PORT_LS_SS_INA:
901 DPRINTF("Wrong state for warm reset\n");
905 /* clear any leftover warm port reset changes first */
906 usbd_req_clear_port_feature(udev, mtx,
907 port, UHF_C_BH_PORT_RESET);
909 /* set warm port reset */
910 err = usbd_req_set_port_feature(udev, mtx,
911 port, UHF_BH_PORT_RESET);
917 /* wait for the device to recover from reset */
918 usb_pause_mtx(mtx, USB_MS_TO_TICKS(usb_port_reset_delay));
919 n += usb_port_reset_delay;
920 err = usbd_req_get_port_status(udev, mtx, &ps, port);
924 status = UGETW(ps.wPortStatus);
925 change = UGETW(ps.wPortChange);
927 /* if the device disappeared, just give up */
928 if (!(status & UPS_CURRENT_CONNECT_STATUS))
931 /* check if reset is complete */
932 if (change & UPS_C_BH_PORT_RESET)
935 /* check for timeout */
942 /* clear port reset first */
943 err = usbd_req_clear_port_feature(
944 udev, mtx, port, UHF_C_BH_PORT_RESET);
948 /* check for timeout */
950 err = USB_ERR_TIMEOUT;
953 /* wait for the device to recover from reset */
954 usb_pause_mtx(mtx, USB_MS_TO_TICKS(usb_port_reset_recovery));
957 DPRINTFN(2, "port %d warm reset returning error=%s\n",
958 port, usbd_errstr(err));
962 /*------------------------------------------------------------------------*
965 * This function can be used to retrieve USB descriptors. It contains
966 * some additional logic like zeroing of missing descriptor bytes and
967 * retrying an USB descriptor in case of failure. The "min_len"
968 * argument specifies the minimum descriptor length. The "max_len"
969 * argument specifies the maximum descriptor length. If the real
970 * descriptor length is less than the minimum length the missing
971 * byte(s) will be zeroed. The type field, the second byte of the USB
972 * descriptor, will get forced to the correct type. If the "actlen"
973 * pointer is non-NULL, the actual length of the transfer will get
974 * stored in the 16-bit unsigned integer which it is pointing to. The
975 * first byte of the descriptor will not get updated. If the "actlen"
976 * pointer is NULL the first byte of the descriptor will get updated
977 * to reflect the actual length instead. If "min_len" is not equal to
978 * "max_len" then this function will try to retrive the beginning of
979 * the descriptor and base the maximum length on the first byte of the
985 *------------------------------------------------------------------------*/
987 usbd_req_get_desc(struct usb_device *udev,
988 struct mtx *mtx, uint16_t *actlen, void *desc,
989 uint16_t min_len, uint16_t max_len,
990 uint16_t id, uint8_t type, uint8_t index,
993 struct usb_device_request req;
997 DPRINTFN(4, "id=%d, type=%d, index=%d, max_len=%d\n",
998 id, type, index, max_len);
1000 req.bmRequestType = UT_READ_DEVICE;
1001 req.bRequest = UR_GET_DESCRIPTOR;
1002 USETW2(req.wValue, type, index);
1003 USETW(req.wIndex, id);
1007 if ((min_len < 2) || (max_len < 2)) {
1008 err = USB_ERR_INVAL;
1011 USETW(req.wLength, min_len);
1013 err = usbd_do_request_flags(udev, mtx, &req,
1014 desc, 0, NULL, 1000 /* ms */);
1016 if (err != 0 && err != USB_ERR_TIMEOUT &&
1017 min_len != max_len) {
1018 /* clear descriptor data */
1019 memset(desc, 0, max_len);
1021 /* try to read full descriptor length */
1022 USETW(req.wLength, max_len);
1024 err = usbd_do_request_flags(udev, mtx, &req,
1025 desc, USB_SHORT_XFER_OK, NULL, 1000 /* ms */);
1029 if (buf[0] > max_len)
1031 else if (buf[0] < 2)
1032 err = USB_ERR_INVAL;
1036 /* enforce descriptor type */
1048 usb_pause_mtx(mtx, hz / 5);
1053 if (min_len == max_len) {
1055 /* enforce correct length */
1056 if ((buf[0] > min_len) && (actlen == NULL))
1059 /* enforce correct type */
1066 if (max_len > buf[0]) {
1069 /* zero minimum data */
1071 while (min_len > max_len) {
1076 /* set new minimum length */
1081 if (actlen != NULL) {
1090 /*------------------------------------------------------------------------*
1091 * usbd_req_get_string_any
1093 * This function will return the string given by "string_index"
1094 * using the first language ID. The maximum length "len" includes
1095 * the terminating zero. The "len" argument should be twice as
1096 * big pluss 2 bytes, compared with the actual maximum string length !
1101 *------------------------------------------------------------------------*/
1103 usbd_req_get_string_any(struct usb_device *udev, struct mtx *mtx, char *buf,
1104 uint16_t len, uint8_t string_index)
1115 /* should not happen */
1116 return (USB_ERR_NORMAL_COMPLETION);
1118 if (string_index == 0) {
1119 /* this is the language table */
1121 return (USB_ERR_INVAL);
1123 if (udev->flags.no_strings) {
1125 return (USB_ERR_STALLED);
1127 err = usbd_req_get_string_desc
1128 (udev, mtx, buf, len, udev->langid, string_index);
1133 temp = (uint8_t *)buf;
1136 /* string length is too short */
1138 return (USB_ERR_INVAL);
1140 /* reserve one byte for terminating zero */
1143 /* find maximum length */
1145 n = (temp[0] / 2) - 1;
1149 /* skip descriptor header */
1152 /* reset swap state */
1155 /* convert and filter */
1156 for (i = 0; (i != n); i++) {
1157 c = UGETW(temp + (2 * i));
1159 /* convert from Unicode, handle buggy strings */
1160 if (((c & 0xff00) == 0) && (swap & 1)) {
1161 /* Little Endian, default */
1164 } else if (((c & 0x00ff) == 0) && (swap & 2)) {
1169 /* silently skip bad character */
1174 * Filter by default - We only allow alphanumerical
1175 * and a few more to avoid any problems with scripts
1192 /* silently skip bad character */
1194 *s = 0; /* zero terminate resulting string */
1195 return (USB_ERR_NORMAL_COMPLETION);
1198 /*------------------------------------------------------------------------*
1199 * usbd_req_get_string_desc
1201 * If you don't know the language ID, consider using
1202 * "usbd_req_get_string_any()".
1207 *------------------------------------------------------------------------*/
1209 usbd_req_get_string_desc(struct usb_device *udev, struct mtx *mtx, void *sdesc,
1210 uint16_t max_len, uint16_t lang_id,
1211 uint8_t string_index)
1213 return (usbd_req_get_desc(udev, mtx, NULL, sdesc, 2, max_len, lang_id,
1214 UDESC_STRING, string_index, 0));
1217 /*------------------------------------------------------------------------*
1218 * usbd_req_get_config_desc_ptr
1220 * This function is used in device side mode to retrieve the pointer
1221 * to the generated config descriptor. This saves allocating space for
1222 * an additional config descriptor when setting the configuration.
1227 *------------------------------------------------------------------------*/
1229 usbd_req_get_descriptor_ptr(struct usb_device *udev,
1230 struct usb_config_descriptor **ppcd, uint16_t wValue)
1232 struct usb_device_request req;
1233 usb_handle_req_t *hr_func;
1238 req.bmRequestType = UT_READ_DEVICE;
1239 req.bRequest = UR_GET_DESCRIPTOR;
1240 USETW(req.wValue, wValue);
1241 USETW(req.wIndex, 0);
1242 USETW(req.wLength, 0);
1247 hr_func = usbd_get_hr_func(udev);
1249 if (hr_func == NULL)
1250 err = USB_ERR_INVAL;
1252 USB_BUS_LOCK(udev->bus);
1253 err = (hr_func) (udev, &req, &ptr, &len);
1254 USB_BUS_UNLOCK(udev->bus);
1259 else if (ptr == NULL)
1260 err = USB_ERR_INVAL;
1262 *ppcd = __DECONST(struct usb_config_descriptor *, ptr);
1267 /*------------------------------------------------------------------------*
1268 * usbd_req_get_config_desc
1273 *------------------------------------------------------------------------*/
1275 usbd_req_get_config_desc(struct usb_device *udev, struct mtx *mtx,
1276 struct usb_config_descriptor *d, uint8_t conf_index)
1280 DPRINTFN(4, "confidx=%d\n", conf_index);
1282 err = usbd_req_get_desc(udev, mtx, NULL, d, sizeof(*d),
1283 sizeof(*d), 0, UDESC_CONFIG, conf_index, 0);
1287 /* Extra sanity checking */
1288 if (UGETW(d->wTotalLength) < (uint16_t)sizeof(*d)) {
1289 err = USB_ERR_INVAL;
1295 /*------------------------------------------------------------------------*
1296 * usbd_alloc_config_desc
1298 * This function is used to allocate a zeroed configuration
1304 *------------------------------------------------------------------------*/
1306 usbd_alloc_config_desc(struct usb_device *udev, uint32_t size)
1308 if (size > USB_CONFIG_MAX) {
1309 DPRINTF("Configuration descriptor too big\n");
1312 #if (USB_HAVE_FIXED_CONFIG == 0)
1313 return (malloc(size, M_USBDEV, M_ZERO | M_WAITOK));
1315 memset(udev->config_data, 0, sizeof(udev->config_data));
1316 return (udev->config_data);
1320 /*------------------------------------------------------------------------*
1321 * usbd_alloc_config_desc
1323 * This function is used to free a configuration descriptor.
1324 *------------------------------------------------------------------------*/
1326 usbd_free_config_desc(struct usb_device *udev, void *ptr)
1328 #if (USB_HAVE_FIXED_CONFIG == 0)
1329 free(ptr, M_USBDEV);
1333 /*------------------------------------------------------------------------*
1334 * usbd_req_get_config_desc_full
1336 * This function gets the complete USB configuration descriptor and
1337 * ensures that "wTotalLength" is correct. The returned configuration
1338 * descriptor is freed by calling "usbd_free_config_desc()".
1343 *------------------------------------------------------------------------*/
1345 usbd_req_get_config_desc_full(struct usb_device *udev, struct mtx *mtx,
1346 struct usb_config_descriptor **ppcd, uint8_t index)
1348 struct usb_config_descriptor cd;
1349 struct usb_config_descriptor *cdesc;
1353 DPRINTFN(4, "index=%d\n", index);
1357 err = usbd_req_get_config_desc(udev, mtx, &cd, index);
1361 /* get full descriptor */
1362 len = UGETW(cd.wTotalLength);
1363 if (len < (uint32_t)sizeof(*cdesc)) {
1364 /* corrupt descriptor */
1365 return (USB_ERR_INVAL);
1366 } else if (len > USB_CONFIG_MAX) {
1367 DPRINTF("Configuration descriptor was truncated\n");
1368 len = USB_CONFIG_MAX;
1370 cdesc = usbd_alloc_config_desc(udev, len);
1372 return (USB_ERR_NOMEM);
1373 err = usbd_req_get_desc(udev, mtx, NULL, cdesc, len, len, 0,
1374 UDESC_CONFIG, index, 3);
1376 usbd_free_config_desc(udev, cdesc);
1379 /* make sure that the device is not fooling us: */
1380 USETW(cdesc->wTotalLength, len);
1384 return (0); /* success */
1387 /*------------------------------------------------------------------------*
1388 * usbd_req_get_device_desc
1393 *------------------------------------------------------------------------*/
1395 usbd_req_get_device_desc(struct usb_device *udev, struct mtx *mtx,
1396 struct usb_device_descriptor *d)
1399 return (usbd_req_get_desc(udev, mtx, NULL, d, sizeof(*d),
1400 sizeof(*d), 0, UDESC_DEVICE, 0, 3));
1403 /*------------------------------------------------------------------------*
1404 * usbd_req_get_alt_interface_no
1409 *------------------------------------------------------------------------*/
1411 usbd_req_get_alt_interface_no(struct usb_device *udev, struct mtx *mtx,
1412 uint8_t *alt_iface_no, uint8_t iface_index)
1414 struct usb_interface *iface = usbd_get_iface(udev, iface_index);
1415 struct usb_device_request req;
1417 if ((iface == NULL) || (iface->idesc == NULL))
1418 return (USB_ERR_INVAL);
1420 req.bmRequestType = UT_READ_INTERFACE;
1421 req.bRequest = UR_GET_INTERFACE;
1422 USETW(req.wValue, 0);
1423 req.wIndex[0] = iface->idesc->bInterfaceNumber;
1425 USETW(req.wLength, 1);
1426 return (usbd_do_request(udev, mtx, &req, alt_iface_no));
1429 /*------------------------------------------------------------------------*
1430 * usbd_req_set_alt_interface_no
1435 *------------------------------------------------------------------------*/
1437 usbd_req_set_alt_interface_no(struct usb_device *udev, struct mtx *mtx,
1438 uint8_t iface_index, uint8_t alt_no)
1440 struct usb_interface *iface = usbd_get_iface(udev, iface_index);
1441 struct usb_device_request req;
1443 if ((iface == NULL) || (iface->idesc == NULL))
1444 return (USB_ERR_INVAL);
1446 req.bmRequestType = UT_WRITE_INTERFACE;
1447 req.bRequest = UR_SET_INTERFACE;
1448 req.wValue[0] = alt_no;
1450 req.wIndex[0] = iface->idesc->bInterfaceNumber;
1452 USETW(req.wLength, 0);
1453 return (usbd_do_request(udev, mtx, &req, 0));
1456 /*------------------------------------------------------------------------*
1457 * usbd_req_get_device_status
1462 *------------------------------------------------------------------------*/
1464 usbd_req_get_device_status(struct usb_device *udev, struct mtx *mtx,
1465 struct usb_status *st)
1467 struct usb_device_request req;
1469 req.bmRequestType = UT_READ_DEVICE;
1470 req.bRequest = UR_GET_STATUS;
1471 USETW(req.wValue, 0);
1472 USETW(req.wIndex, 0);
1473 USETW(req.wLength, sizeof(*st));
1474 return (usbd_do_request(udev, mtx, &req, st));
1477 /*------------------------------------------------------------------------*
1478 * usbd_req_get_hub_descriptor
1483 *------------------------------------------------------------------------*/
1485 usbd_req_get_hub_descriptor(struct usb_device *udev, struct mtx *mtx,
1486 struct usb_hub_descriptor *hd, uint8_t nports)
1488 struct usb_device_request req;
1489 uint16_t len = (nports + 7 + (8 * 8)) / 8;
1491 req.bmRequestType = UT_READ_CLASS_DEVICE;
1492 req.bRequest = UR_GET_DESCRIPTOR;
1493 USETW2(req.wValue, UDESC_HUB, 0);
1494 USETW(req.wIndex, 0);
1495 USETW(req.wLength, len);
1496 return (usbd_do_request(udev, mtx, &req, hd));
1499 /*------------------------------------------------------------------------*
1500 * usbd_req_get_ss_hub_descriptor
1505 *------------------------------------------------------------------------*/
1507 usbd_req_get_ss_hub_descriptor(struct usb_device *udev, struct mtx *mtx,
1508 struct usb_hub_ss_descriptor *hd, uint8_t nports)
1510 struct usb_device_request req;
1511 uint16_t len = sizeof(*hd) - 32 + 1 + ((nports + 7) / 8);
1513 req.bmRequestType = UT_READ_CLASS_DEVICE;
1514 req.bRequest = UR_GET_DESCRIPTOR;
1515 USETW2(req.wValue, UDESC_SS_HUB, 0);
1516 USETW(req.wIndex, 0);
1517 USETW(req.wLength, len);
1518 return (usbd_do_request(udev, mtx, &req, hd));
1521 /*------------------------------------------------------------------------*
1522 * usbd_req_get_hub_status
1527 *------------------------------------------------------------------------*/
1529 usbd_req_get_hub_status(struct usb_device *udev, struct mtx *mtx,
1530 struct usb_hub_status *st)
1532 struct usb_device_request req;
1534 req.bmRequestType = UT_READ_CLASS_DEVICE;
1535 req.bRequest = UR_GET_STATUS;
1536 USETW(req.wValue, 0);
1537 USETW(req.wIndex, 0);
1538 USETW(req.wLength, sizeof(struct usb_hub_status));
1539 return (usbd_do_request(udev, mtx, &req, st));
1542 /*------------------------------------------------------------------------*
1543 * usbd_req_set_address
1545 * This function is used to set the address for an USB device. After
1546 * port reset the USB device will respond at address zero.
1551 *------------------------------------------------------------------------*/
1553 usbd_req_set_address(struct usb_device *udev, struct mtx *mtx, uint16_t addr)
1555 struct usb_device_request req;
1558 DPRINTFN(6, "setting device address=%d\n", addr);
1560 req.bmRequestType = UT_WRITE_DEVICE;
1561 req.bRequest = UR_SET_ADDRESS;
1562 USETW(req.wValue, addr);
1563 USETW(req.wIndex, 0);
1564 USETW(req.wLength, 0);
1566 err = USB_ERR_INVAL;
1568 /* check if USB controller handles set address */
1569 if (udev->bus->methods->set_address != NULL)
1570 err = (udev->bus->methods->set_address) (udev, mtx, addr);
1572 if (err != USB_ERR_INVAL)
1575 /* Setting the address should not take more than 1 second ! */
1576 err = usbd_do_request_flags(udev, mtx, &req, NULL,
1577 USB_DELAY_STATUS_STAGE, NULL, 1000);
1580 /* allow device time to set new address */
1582 USB_MS_TO_TICKS(usb_set_address_settle));
1587 /*------------------------------------------------------------------------*
1588 * usbd_req_get_port_status
1593 *------------------------------------------------------------------------*/
1595 usbd_req_get_port_status(struct usb_device *udev, struct mtx *mtx,
1596 struct usb_port_status *ps, uint8_t port)
1598 struct usb_device_request req;
1600 req.bmRequestType = UT_READ_CLASS_OTHER;
1601 req.bRequest = UR_GET_STATUS;
1602 USETW(req.wValue, 0);
1603 req.wIndex[0] = port;
1605 USETW(req.wLength, sizeof(*ps));
1607 return (usbd_do_request_flags(udev, mtx, &req, ps, 0, NULL, 1000));
1610 /*------------------------------------------------------------------------*
1611 * usbd_req_clear_hub_feature
1616 *------------------------------------------------------------------------*/
1618 usbd_req_clear_hub_feature(struct usb_device *udev, struct mtx *mtx,
1621 struct usb_device_request req;
1623 req.bmRequestType = UT_WRITE_CLASS_DEVICE;
1624 req.bRequest = UR_CLEAR_FEATURE;
1625 USETW(req.wValue, sel);
1626 USETW(req.wIndex, 0);
1627 USETW(req.wLength, 0);
1628 return (usbd_do_request(udev, mtx, &req, 0));
1631 /*------------------------------------------------------------------------*
1632 * usbd_req_set_hub_feature
1637 *------------------------------------------------------------------------*/
1639 usbd_req_set_hub_feature(struct usb_device *udev, struct mtx *mtx,
1642 struct usb_device_request req;
1644 req.bmRequestType = UT_WRITE_CLASS_DEVICE;
1645 req.bRequest = UR_SET_FEATURE;
1646 USETW(req.wValue, sel);
1647 USETW(req.wIndex, 0);
1648 USETW(req.wLength, 0);
1649 return (usbd_do_request(udev, mtx, &req, 0));
1652 /*------------------------------------------------------------------------*
1653 * usbd_req_set_hub_u1_timeout
1658 *------------------------------------------------------------------------*/
1660 usbd_req_set_hub_u1_timeout(struct usb_device *udev, struct mtx *mtx,
1661 uint8_t port, uint8_t timeout)
1663 struct usb_device_request req;
1665 req.bmRequestType = UT_WRITE_CLASS_OTHER;
1666 req.bRequest = UR_SET_FEATURE;
1667 USETW(req.wValue, UHF_PORT_U1_TIMEOUT);
1668 req.wIndex[0] = port;
1669 req.wIndex[1] = timeout;
1670 USETW(req.wLength, 0);
1671 return (usbd_do_request(udev, mtx, &req, 0));
1674 /*------------------------------------------------------------------------*
1675 * usbd_req_set_hub_u2_timeout
1680 *------------------------------------------------------------------------*/
1682 usbd_req_set_hub_u2_timeout(struct usb_device *udev, struct mtx *mtx,
1683 uint8_t port, uint8_t timeout)
1685 struct usb_device_request req;
1687 req.bmRequestType = UT_WRITE_CLASS_OTHER;
1688 req.bRequest = UR_SET_FEATURE;
1689 USETW(req.wValue, UHF_PORT_U2_TIMEOUT);
1690 req.wIndex[0] = port;
1691 req.wIndex[1] = timeout;
1692 USETW(req.wLength, 0);
1693 return (usbd_do_request(udev, mtx, &req, 0));
1696 /*------------------------------------------------------------------------*
1697 * usbd_req_set_hub_depth
1702 *------------------------------------------------------------------------*/
1704 usbd_req_set_hub_depth(struct usb_device *udev, struct mtx *mtx,
1707 struct usb_device_request req;
1709 req.bmRequestType = UT_WRITE_CLASS_DEVICE;
1710 req.bRequest = UR_SET_HUB_DEPTH;
1711 USETW(req.wValue, depth);
1712 USETW(req.wIndex, 0);
1713 USETW(req.wLength, 0);
1714 return (usbd_do_request(udev, mtx, &req, 0));
1717 /*------------------------------------------------------------------------*
1718 * usbd_req_clear_port_feature
1723 *------------------------------------------------------------------------*/
1725 usbd_req_clear_port_feature(struct usb_device *udev, struct mtx *mtx,
1726 uint8_t port, uint16_t sel)
1728 struct usb_device_request req;
1730 req.bmRequestType = UT_WRITE_CLASS_OTHER;
1731 req.bRequest = UR_CLEAR_FEATURE;
1732 USETW(req.wValue, sel);
1733 req.wIndex[0] = port;
1735 USETW(req.wLength, 0);
1736 return (usbd_do_request(udev, mtx, &req, 0));
1739 /*------------------------------------------------------------------------*
1740 * usbd_req_set_port_feature
1745 *------------------------------------------------------------------------*/
1747 usbd_req_set_port_feature(struct usb_device *udev, struct mtx *mtx,
1748 uint8_t port, uint16_t sel)
1750 struct usb_device_request req;
1752 req.bmRequestType = UT_WRITE_CLASS_OTHER;
1753 req.bRequest = UR_SET_FEATURE;
1754 USETW(req.wValue, sel);
1755 req.wIndex[0] = port;
1757 USETW(req.wLength, 0);
1758 return (usbd_do_request(udev, mtx, &req, 0));
1761 /*------------------------------------------------------------------------*
1762 * usbd_req_set_protocol
1767 *------------------------------------------------------------------------*/
1769 usbd_req_set_protocol(struct usb_device *udev, struct mtx *mtx,
1770 uint8_t iface_index, uint16_t report)
1772 struct usb_interface *iface = usbd_get_iface(udev, iface_index);
1773 struct usb_device_request req;
1775 if ((iface == NULL) || (iface->idesc == NULL)) {
1776 return (USB_ERR_INVAL);
1778 DPRINTFN(5, "iface=%p, report=%d, endpt=%d\n",
1779 iface, report, iface->idesc->bInterfaceNumber);
1781 req.bmRequestType = UT_WRITE_CLASS_INTERFACE;
1782 req.bRequest = UR_SET_PROTOCOL;
1783 USETW(req.wValue, report);
1784 req.wIndex[0] = iface->idesc->bInterfaceNumber;
1786 USETW(req.wLength, 0);
1787 return (usbd_do_request(udev, mtx, &req, 0));
1790 /*------------------------------------------------------------------------*
1791 * usbd_req_set_report
1796 *------------------------------------------------------------------------*/
1798 usbd_req_set_report(struct usb_device *udev, struct mtx *mtx, void *data, uint16_t len,
1799 uint8_t iface_index, uint8_t type, uint8_t id)
1801 struct usb_interface *iface = usbd_get_iface(udev, iface_index);
1802 struct usb_device_request req;
1804 if ((iface == NULL) || (iface->idesc == NULL)) {
1805 return (USB_ERR_INVAL);
1807 DPRINTFN(5, "len=%d\n", len);
1809 req.bmRequestType = UT_WRITE_CLASS_INTERFACE;
1810 req.bRequest = UR_SET_REPORT;
1811 USETW2(req.wValue, type, id);
1812 req.wIndex[0] = iface->idesc->bInterfaceNumber;
1814 USETW(req.wLength, len);
1815 return (usbd_do_request(udev, mtx, &req, data));
1818 /*------------------------------------------------------------------------*
1819 * usbd_req_get_report
1824 *------------------------------------------------------------------------*/
1826 usbd_req_get_report(struct usb_device *udev, struct mtx *mtx, void *data,
1827 uint16_t len, uint8_t iface_index, uint8_t type, uint8_t id)
1829 struct usb_interface *iface = usbd_get_iface(udev, iface_index);
1830 struct usb_device_request req;
1832 if ((iface == NULL) || (iface->idesc == NULL)) {
1833 return (USB_ERR_INVAL);
1835 DPRINTFN(5, "len=%d\n", len);
1837 req.bmRequestType = UT_READ_CLASS_INTERFACE;
1838 req.bRequest = UR_GET_REPORT;
1839 USETW2(req.wValue, type, id);
1840 req.wIndex[0] = iface->idesc->bInterfaceNumber;
1842 USETW(req.wLength, len);
1843 return (usbd_do_request(udev, mtx, &req, data));
1846 /*------------------------------------------------------------------------*
1852 *------------------------------------------------------------------------*/
1854 usbd_req_set_idle(struct usb_device *udev, struct mtx *mtx,
1855 uint8_t iface_index, uint8_t duration, uint8_t id)
1857 struct usb_interface *iface = usbd_get_iface(udev, iface_index);
1858 struct usb_device_request req;
1860 if ((iface == NULL) || (iface->idesc == NULL)) {
1861 return (USB_ERR_INVAL);
1863 DPRINTFN(5, "%d %d\n", duration, id);
1865 req.bmRequestType = UT_WRITE_CLASS_INTERFACE;
1866 req.bRequest = UR_SET_IDLE;
1867 USETW2(req.wValue, duration, id);
1868 req.wIndex[0] = iface->idesc->bInterfaceNumber;
1870 USETW(req.wLength, 0);
1871 return (usbd_do_request(udev, mtx, &req, 0));
1874 /*------------------------------------------------------------------------*
1875 * usbd_req_get_report_descriptor
1880 *------------------------------------------------------------------------*/
1882 usbd_req_get_report_descriptor(struct usb_device *udev, struct mtx *mtx,
1883 void *d, uint16_t size, uint8_t iface_index)
1885 struct usb_interface *iface = usbd_get_iface(udev, iface_index);
1886 struct usb_device_request req;
1888 if ((iface == NULL) || (iface->idesc == NULL)) {
1889 return (USB_ERR_INVAL);
1891 req.bmRequestType = UT_READ_INTERFACE;
1892 req.bRequest = UR_GET_DESCRIPTOR;
1893 USETW2(req.wValue, UDESC_REPORT, 0); /* report id should be 0 */
1894 req.wIndex[0] = iface->idesc->bInterfaceNumber;
1896 USETW(req.wLength, size);
1897 return (usbd_do_request(udev, mtx, &req, d));
1900 /*------------------------------------------------------------------------*
1901 * usbd_req_set_config
1903 * This function is used to select the current configuration number in
1904 * both USB device side mode and USB host side mode. When setting the
1905 * configuration the function of the interfaces can change.
1910 *------------------------------------------------------------------------*/
1912 usbd_req_set_config(struct usb_device *udev, struct mtx *mtx, uint8_t conf)
1914 struct usb_device_request req;
1916 DPRINTF("setting config %d\n", conf);
1918 /* do "set configuration" request */
1920 req.bmRequestType = UT_WRITE_DEVICE;
1921 req.bRequest = UR_SET_CONFIG;
1922 req.wValue[0] = conf;
1924 USETW(req.wIndex, 0);
1925 USETW(req.wLength, 0);
1926 return (usbd_do_request(udev, mtx, &req, 0));
1929 /*------------------------------------------------------------------------*
1930 * usbd_req_get_config
1935 *------------------------------------------------------------------------*/
1937 usbd_req_get_config(struct usb_device *udev, struct mtx *mtx, uint8_t *pconf)
1939 struct usb_device_request req;
1941 req.bmRequestType = UT_READ_DEVICE;
1942 req.bRequest = UR_GET_CONFIG;
1943 USETW(req.wValue, 0);
1944 USETW(req.wIndex, 0);
1945 USETW(req.wLength, 1);
1946 return (usbd_do_request(udev, mtx, &req, pconf));
1949 /*------------------------------------------------------------------------*
1950 * usbd_setup_device_desc
1951 *------------------------------------------------------------------------*/
1953 usbd_setup_device_desc(struct usb_device *udev, struct mtx *mtx)
1958 * Get the first 8 bytes of the device descriptor !
1960 * NOTE: "usbd_do_request()" will check the device descriptor
1961 * next time we do a request to see if the maximum packet size
1962 * changed! The 8 first bytes of the device descriptor
1963 * contains the maximum packet size to use on control endpoint
1964 * 0. If this value is different from "USB_MAX_IPACKET" a new
1965 * USB control request will be setup!
1967 switch (udev->speed) {
1968 case USB_SPEED_FULL:
1969 if (usb_full_ddesc != 0) {
1970 /* get full device descriptor */
1971 err = usbd_req_get_device_desc(udev, mtx, &udev->ddesc);
1976 /* get partial device descriptor, some devices crash on this */
1977 err = usbd_req_get_desc(udev, mtx, NULL, &udev->ddesc,
1978 USB_MAX_IPACKET, USB_MAX_IPACKET, 0, UDESC_DEVICE, 0, 0);
1982 /* get the full device descriptor */
1983 err = usbd_req_get_device_desc(udev, mtx, &udev->ddesc);
1987 DPRINTF("Minimum bMaxPacketSize is large enough "
1988 "to hold the complete device descriptor or "
1989 "only one bMaxPacketSize choice\n");
1991 /* get the full device descriptor */
1992 err = usbd_req_get_device_desc(udev, mtx, &udev->ddesc);
1994 /* try one more time, if error */
1996 err = usbd_req_get_device_desc(udev, mtx, &udev->ddesc);
2001 DPRINTFN(0, "getting device descriptor "
2002 "at addr %d failed, %s\n", udev->address,
2007 DPRINTF("adding unit addr=%d, rev=%02x, class=%d, "
2008 "subclass=%d, protocol=%d, maxpacket=%d, len=%d, speed=%d\n",
2009 udev->address, UGETW(udev->ddesc.bcdUSB),
2010 udev->ddesc.bDeviceClass,
2011 udev->ddesc.bDeviceSubClass,
2012 udev->ddesc.bDeviceProtocol,
2013 udev->ddesc.bMaxPacketSize,
2014 udev->ddesc.bLength,
2020 /*------------------------------------------------------------------------*
2021 * usbd_req_re_enumerate
2023 * NOTE: After this function returns the hardware is in the
2024 * unconfigured state! The application is responsible for setting a
2025 * new configuration.
2030 *------------------------------------------------------------------------*/
2032 usbd_req_re_enumerate(struct usb_device *udev, struct mtx *mtx)
2034 struct usb_device *parent_hub;
2037 uint8_t do_retry = 1;
2039 if (udev->flags.usb_mode != USB_MODE_HOST) {
2040 return (USB_ERR_INVAL);
2042 old_addr = udev->address;
2043 parent_hub = udev->parent_hub;
2044 if (parent_hub == NULL) {
2045 return (USB_ERR_INVAL);
2048 #if USB_HAVE_TT_SUPPORT
2050 * Try to reset the High Speed parent HUB of a LOW- or FULL-
2051 * speed device, if any.
2053 if (udev->parent_hs_hub != NULL &&
2054 udev->speed != USB_SPEED_HIGH) {
2055 DPRINTF("Trying to reset parent High Speed TT.\n");
2056 if (udev->parent_hs_hub == parent_hub &&
2057 (uhub_count_active_host_ports(parent_hub, USB_SPEED_LOW) +
2058 uhub_count_active_host_ports(parent_hub, USB_SPEED_FULL)) == 1) {
2059 /* we can reset the whole TT */
2060 err = usbd_req_reset_tt(parent_hub, NULL,
2063 /* only reset a particular device and endpoint */
2064 err = usbd_req_clear_tt_buffer(udev->parent_hs_hub, NULL,
2065 udev->hs_port_no, old_addr, UE_CONTROL, 0);
2068 DPRINTF("Resetting parent High "
2069 "Speed TT failed (%s).\n",
2074 /* Try to warm reset first */
2075 if (parent_hub->speed == USB_SPEED_SUPER)
2076 usbd_req_warm_reset_port(parent_hub, mtx, udev->port_no);
2078 /* Try to reset the parent HUB port. */
2079 err = usbd_req_reset_port(parent_hub, mtx, udev->port_no);
2081 DPRINTFN(0, "addr=%d, port reset failed, %s\n",
2082 old_addr, usbd_errstr(err));
2087 * After that the port has been reset our device should be at
2090 udev->address = USB_START_ADDR;
2092 /* reset "bMaxPacketSize" */
2093 udev->ddesc.bMaxPacketSize = USB_MAX_IPACKET;
2095 /* reset USB state */
2096 usb_set_device_state(udev, USB_STATE_POWERED);
2099 * Restore device address:
2101 err = usbd_req_set_address(udev, mtx, old_addr);
2103 /* XXX ignore any errors! */
2104 DPRINTFN(0, "addr=%d, set address failed! (%s, ignored)\n",
2105 old_addr, usbd_errstr(err));
2108 * Restore device address, if the controller driver did not
2111 if (udev->address == USB_START_ADDR)
2112 udev->address = old_addr;
2114 /* setup the device descriptor and the initial "wMaxPacketSize" */
2115 err = usbd_setup_device_desc(udev, mtx);
2118 if (err && do_retry) {
2119 /* give the USB firmware some time to load */
2120 usb_pause_mtx(mtx, hz / 2);
2121 /* no more retries after this retry */
2126 /* restore address */
2127 if (udev->address == USB_START_ADDR)
2128 udev->address = old_addr;
2129 /* update state, if successful */
2131 usb_set_device_state(udev, USB_STATE_ADDRESSED);
2135 /*------------------------------------------------------------------------*
2136 * usbd_req_clear_device_feature
2141 *------------------------------------------------------------------------*/
2143 usbd_req_clear_device_feature(struct usb_device *udev, struct mtx *mtx,
2146 struct usb_device_request req;
2148 req.bmRequestType = UT_WRITE_DEVICE;
2149 req.bRequest = UR_CLEAR_FEATURE;
2150 USETW(req.wValue, sel);
2151 USETW(req.wIndex, 0);
2152 USETW(req.wLength, 0);
2153 return (usbd_do_request(udev, mtx, &req, 0));
2156 /*------------------------------------------------------------------------*
2157 * usbd_req_set_device_feature
2162 *------------------------------------------------------------------------*/
2164 usbd_req_set_device_feature(struct usb_device *udev, struct mtx *mtx,
2167 struct usb_device_request req;
2169 req.bmRequestType = UT_WRITE_DEVICE;
2170 req.bRequest = UR_SET_FEATURE;
2171 USETW(req.wValue, sel);
2172 USETW(req.wIndex, 0);
2173 USETW(req.wLength, 0);
2174 return (usbd_do_request(udev, mtx, &req, 0));
2177 /*------------------------------------------------------------------------*
2183 *------------------------------------------------------------------------*/
2185 usbd_req_reset_tt(struct usb_device *udev, struct mtx *mtx,
2188 struct usb_device_request req;
2190 /* For single TT HUBs the port should be 1 */
2192 if (udev->ddesc.bDeviceClass == UDCLASS_HUB &&
2193 udev->ddesc.bDeviceProtocol == UDPROTO_HSHUBSTT)
2196 req.bmRequestType = UT_WRITE_CLASS_OTHER;
2197 req.bRequest = UR_RESET_TT;
2198 USETW(req.wValue, 0);
2199 req.wIndex[0] = port;
2201 USETW(req.wLength, 0);
2202 return (usbd_do_request(udev, mtx, &req, 0));
2205 /*------------------------------------------------------------------------*
2206 * usbd_req_clear_tt_buffer
2208 * For single TT HUBs the port should be 1.
2213 *------------------------------------------------------------------------*/
2215 usbd_req_clear_tt_buffer(struct usb_device *udev, struct mtx *mtx,
2216 uint8_t port, uint8_t addr, uint8_t type, uint8_t endpoint)
2218 struct usb_device_request req;
2221 /* For single TT HUBs the port should be 1 */
2223 if (udev->ddesc.bDeviceClass == UDCLASS_HUB &&
2224 udev->ddesc.bDeviceProtocol == UDPROTO_HSHUBSTT)
2227 wValue = (endpoint & 0xF) | ((addr & 0x7F) << 4) |
2228 ((endpoint & 0x80) << 8) | ((type & 3) << 12);
2230 req.bmRequestType = UT_WRITE_CLASS_OTHER;
2231 req.bRequest = UR_CLEAR_TT_BUFFER;
2232 USETW(req.wValue, wValue);
2233 req.wIndex[0] = port;
2235 USETW(req.wLength, 0);
2236 return (usbd_do_request(udev, mtx, &req, 0));
2239 /*------------------------------------------------------------------------*
2240 * usbd_req_set_port_link_state
2242 * USB 3.0 specific request
2247 *------------------------------------------------------------------------*/
2249 usbd_req_set_port_link_state(struct usb_device *udev, struct mtx *mtx,
2250 uint8_t port, uint8_t link_state)
2252 struct usb_device_request req;
2254 req.bmRequestType = UT_WRITE_CLASS_OTHER;
2255 req.bRequest = UR_SET_FEATURE;
2256 USETW(req.wValue, UHF_PORT_LINK_STATE);
2257 req.wIndex[0] = port;
2258 req.wIndex[1] = link_state;
2259 USETW(req.wLength, 0);
2260 return (usbd_do_request(udev, mtx, &req, 0));
2263 /*------------------------------------------------------------------------*
2264 * usbd_req_set_lpm_info
2266 * USB 2.0 specific request for Link Power Management.
2270 * USB_ERR_PENDING_REQUESTS: NYET
2271 * USB_ERR_TIMEOUT: TIMEOUT
2272 * USB_ERR_STALL: STALL
2274 *------------------------------------------------------------------------*/
2276 usbd_req_set_lpm_info(struct usb_device *udev, struct mtx *mtx,
2277 uint8_t port, uint8_t besl, uint8_t addr, uint8_t rwe)
2279 struct usb_device_request req;
2283 req.bmRequestType = UT_WRITE_CLASS_OTHER;
2284 req.bRequest = UR_SET_AND_TEST;
2285 USETW(req.wValue, UHF_PORT_L1);
2286 req.wIndex[0] = (port & 0xF) | ((besl & 0xF) << 4);
2287 req.wIndex[1] = (addr & 0x7F) | (rwe ? 0x80 : 0x00);
2288 USETW(req.wLength, sizeof(buf));
2290 /* set default value in case of short transfer */
2293 err = usbd_do_request(udev, mtx, &req, buf);
2298 case 0x00: /* SUCCESS */
2300 case 0x10: /* NYET */
2301 err = USB_ERR_PENDING_REQUESTS;
2303 case 0x11: /* TIMEOUT */
2304 err = USB_ERR_TIMEOUT;
2306 case 0x30: /* STALL */
2307 err = USB_ERR_STALLED;
2309 default: /* reserved */
2310 err = USB_ERR_IOERROR;