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.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
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.
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
29 #include <sys/stdint.h>
30 #include <sys/stddef.h>
31 #include <sys/param.h>
32 #include <sys/queue.h>
33 #include <sys/types.h>
34 #include <sys/systm.h>
35 #include <sys/kernel.h>
37 #include <sys/module.h>
39 #include <sys/mutex.h>
40 #include <sys/condvar.h>
41 #include <sys/sysctl.h>
43 #include <sys/unistd.h>
44 #include <sys/callout.h>
45 #include <sys/malloc.h>
48 #include <dev/usb/usb.h>
49 #include <dev/usb/usbdi.h>
50 #include <dev/usb/usbdi_util.h>
51 #include <dev/usb/usb_ioctl.h>
52 #include <dev/usb/usbhid.h>
54 #define USB_DEBUG_VAR usb_debug
56 #include <dev/usb/usb_core.h>
57 #include <dev/usb/usb_busdma.h>
58 #include <dev/usb/usb_request.h>
59 #include <dev/usb/usb_process.h>
60 #include <dev/usb/usb_transfer.h>
61 #include <dev/usb/usb_debug.h>
62 #include <dev/usb/usb_device.h>
63 #include <dev/usb/usb_util.h>
64 #include <dev/usb/usb_dynamic.h>
66 #include <dev/usb/usb_controller.h>
67 #include <dev/usb/usb_bus.h>
68 #include <sys/ctype.h>
70 static int usb_no_cs_fail;
72 SYSCTL_INT(_hw_usb, OID_AUTO, no_cs_fail, CTLFLAG_RW,
73 &usb_no_cs_fail, 0, "USB clear stall failures are ignored, if set");
77 /* The following structures are used in connection to fault injection. */
78 struct usb_ctrl_debug {
79 int bus_index; /* target bus */
80 int dev_index; /* target address */
81 int ds_fail; /* fail data stage */
82 int ss_fail; /* fail status stage */
83 int ds_delay; /* data stage delay in ms */
84 int ss_delay; /* status stage delay in ms */
85 int bmRequestType_value;
89 struct usb_ctrl_debug_bits {
97 /* The default is to disable fault injection. */
99 static struct usb_ctrl_debug usb_ctrl_debug = {
102 .bmRequestType_value = -1,
103 .bRequest_value = -1,
106 SYSCTL_INT(_hw_usb, OID_AUTO, ctrl_bus_fail, CTLFLAG_RW,
107 &usb_ctrl_debug.bus_index, 0, "USB controller index to fail");
108 SYSCTL_INT(_hw_usb, OID_AUTO, ctrl_dev_fail, CTLFLAG_RW,
109 &usb_ctrl_debug.dev_index, 0, "USB device address to fail");
110 SYSCTL_INT(_hw_usb, OID_AUTO, ctrl_ds_fail, CTLFLAG_RW,
111 &usb_ctrl_debug.ds_fail, 0, "USB fail data stage");
112 SYSCTL_INT(_hw_usb, OID_AUTO, ctrl_ss_fail, CTLFLAG_RW,
113 &usb_ctrl_debug.ss_fail, 0, "USB fail status stage");
114 SYSCTL_INT(_hw_usb, OID_AUTO, ctrl_ds_delay, CTLFLAG_RW,
115 &usb_ctrl_debug.ds_delay, 0, "USB data stage delay in ms");
116 SYSCTL_INT(_hw_usb, OID_AUTO, ctrl_ss_delay, CTLFLAG_RW,
117 &usb_ctrl_debug.ss_delay, 0, "USB status stage delay in ms");
118 SYSCTL_INT(_hw_usb, OID_AUTO, ctrl_rt_fail, CTLFLAG_RW,
119 &usb_ctrl_debug.bmRequestType_value, 0, "USB bmRequestType to fail");
120 SYSCTL_INT(_hw_usb, OID_AUTO, ctrl_rv_fail, CTLFLAG_RW,
121 &usb_ctrl_debug.bRequest_value, 0, "USB bRequest to fail");
123 /*------------------------------------------------------------------------*
124 * usbd_get_debug_bits
126 * This function is only useful in USB host mode.
127 *------------------------------------------------------------------------*/
129 usbd_get_debug_bits(struct usb_device *udev, struct usb_device_request *req,
130 struct usb_ctrl_debug_bits *dbg)
134 memset(dbg, 0, sizeof(*dbg));
136 /* Compute data stage delay */
138 temp = usb_ctrl_debug.ds_delay;
141 else if (temp > (16*1024))
144 dbg->ds_delay = temp;
146 /* Compute status stage delay */
148 temp = usb_ctrl_debug.ss_delay;
151 else if (temp > (16*1024))
154 dbg->ss_delay = temp;
156 /* Check if this control request should be failed */
158 if (usbd_get_bus_index(udev) != usb_ctrl_debug.bus_index)
161 if (usbd_get_device_index(udev) != usb_ctrl_debug.dev_index)
164 temp = usb_ctrl_debug.bmRequestType_value;
166 if ((temp != req->bmRequestType) && (temp >= 0) && (temp <= 255))
169 temp = usb_ctrl_debug.bRequest_value;
171 if ((temp != req->bRequest) && (temp >= 0) && (temp <= 255))
174 temp = usb_ctrl_debug.ds_fail;
178 temp = usb_ctrl_debug.ss_fail;
184 #endif /* USB_REQ_DEBUG */
185 #endif /* USB_DEBUG */
187 /*------------------------------------------------------------------------*
188 * usbd_do_request_callback
190 * This function is the USB callback for generic USB Host control
192 *------------------------------------------------------------------------*/
194 usbd_do_request_callback(struct usb_xfer *xfer, usb_error_t error)
196 ; /* workaround for a bug in "indent" */
198 DPRINTF("st=%u\n", USB_GET_STATE(xfer));
200 switch (USB_GET_STATE(xfer)) {
202 usbd_transfer_submit(xfer);
205 cv_signal(&xfer->xroot->udev->ctrlreq_cv);
210 /*------------------------------------------------------------------------*
211 * usb_do_clear_stall_callback
213 * This function is the USB callback for generic clear stall requests.
214 *------------------------------------------------------------------------*/
216 usb_do_clear_stall_callback(struct usb_xfer *xfer, usb_error_t error)
218 struct usb_device_request req;
219 struct usb_device *udev;
220 struct usb_endpoint *ep;
221 struct usb_endpoint *ep_end;
222 struct usb_endpoint *ep_first;
225 udev = xfer->xroot->udev;
227 USB_BUS_LOCK(udev->bus);
229 /* round robin endpoint clear stall */
232 ep_end = udev->endpoints + udev->endpoints_max;
233 ep_first = udev->endpoints;
234 to = udev->endpoints_max;
236 switch (USB_GET_STATE(xfer)) {
237 case USB_ST_TRANSFERRED:
239 /* reset error counter */
240 udev->clear_stall_errors = 0;
243 goto tr_setup; /* device was unconfigured */
248 /* some hardware needs a callback to clear the data toggle */
249 usbd_clear_stall_locked(udev, ep);
250 /* start up the current or next transfer, if any */
251 usb_command_wrapper(&ep->endpoint_q,
252 ep->endpoint_q.curr);
259 break; /* no endpoints - nothing to do */
260 if ((ep < ep_first) || (ep >= ep_end))
261 ep = ep_first; /* endpoint wrapped around */
265 /* setup a clear-stall packet */
267 req.bmRequestType = UT_WRITE_ENDPOINT;
268 req.bRequest = UR_CLEAR_FEATURE;
269 USETW(req.wValue, UF_ENDPOINT_HALT);
270 req.wIndex[0] = ep->edesc->bEndpointAddress;
272 USETW(req.wLength, 0);
274 /* copy in the transfer */
276 usbd_copy_in(xfer->frbuffers, 0, &req, sizeof(req));
279 usbd_xfer_set_frame_len(xfer, 0, sizeof(req));
281 USB_BUS_UNLOCK(udev->bus);
283 usbd_transfer_submit(xfer);
285 USB_BUS_LOCK(udev->bus);
293 if (error == USB_ERR_CANCELLED)
296 DPRINTF("Clear stall failed.\n");
299 * Some VMs like VirtualBox always return failure on
300 * clear-stall which we sometimes should just ignore.
304 if (udev->clear_stall_errors == USB_CS_RESET_LIMIT)
307 if (error == USB_ERR_TIMEOUT) {
308 udev->clear_stall_errors = USB_CS_RESET_LIMIT;
309 DPRINTF("Trying to re-enumerate.\n");
310 usbd_start_re_enumerate(udev);
312 udev->clear_stall_errors++;
313 if (udev->clear_stall_errors == USB_CS_RESET_LIMIT) {
314 DPRINTF("Trying to re-enumerate.\n");
315 usbd_start_re_enumerate(udev);
321 /* store current endpoint */
323 USB_BUS_UNLOCK(udev->bus);
326 static usb_handle_req_t *
327 usbd_get_hr_func(struct usb_device *udev)
329 /* figure out if there is a Handle Request function */
330 if (udev->flags.usb_mode == USB_MODE_DEVICE)
331 return (usb_temp_get_desc_p);
332 else if (udev->parent_hub == NULL)
333 return (udev->bus->methods->roothub_exec);
338 /*------------------------------------------------------------------------*
339 * usbd_do_request_flags and usbd_do_request
341 * Description of arguments passed to these functions:
343 * "udev" - this is the "usb_device" structure pointer on which the
344 * request should be performed. It is possible to call this function
345 * in both Host Side mode and Device Side mode.
347 * "mtx" - if this argument is non-NULL the mutex pointed to by it
348 * will get dropped and picked up during the execution of this
349 * function, hence this function sometimes needs to sleep. If this
350 * argument is NULL it has no effect.
352 * "req" - this argument must always be non-NULL and points to an
353 * 8-byte structure holding the USB request to be done. The USB
354 * request structure has a bit telling the direction of the USB
355 * request, if it is a read or a write.
357 * "data" - if the "wLength" part of the structure pointed to by "req"
358 * is non-zero this argument must point to a valid kernel buffer which
359 * can hold at least "wLength" bytes. If "wLength" is zero "data" can
362 * "flags" - here is a list of valid flags:
364 * o USB_SHORT_XFER_OK: allows the data transfer to be shorter than
367 * o USB_DELAY_STATUS_STAGE: allows the status stage to be performed
368 * at a later point in time. This is tunable by the "hw.usb.ss_delay"
369 * sysctl. This flag is mostly useful for debugging.
371 * o USB_USER_DATA_PTR: treat the "data" pointer like a userland
374 * "actlen" - if non-NULL the actual transfer length will be stored in
375 * the 16-bit unsigned integer pointed to by "actlen". This
376 * information is mostly useful when the "USB_SHORT_XFER_OK" flag is
379 * "timeout" - gives the timeout for the control transfer in
380 * milliseconds. A "timeout" value less than 50 milliseconds is
381 * treated like a 50 millisecond timeout. A "timeout" value greater
382 * than 30 seconds is treated like a 30 second timeout. This USB stack
383 * does not allow control requests without a timeout.
385 * NOTE: This function is thread safe. All calls to "usbd_do_request_flags"
386 * will be serialized by the use of the USB device enumeration lock.
391 *------------------------------------------------------------------------*/
393 usbd_do_request_flags(struct usb_device *udev, struct mtx *mtx,
394 struct usb_device_request *req, void *data, uint16_t flags,
395 uint16_t *actlen, usb_timeout_t timeout)
398 struct usb_ctrl_debug_bits dbg;
400 usb_handle_req_t *hr_func;
401 struct usb_xfer *xfer;
404 usb_ticks_t start_ticks;
405 usb_ticks_t delta_ticks;
406 usb_ticks_t max_ticks;
413 /* timeout is too small */
416 if (timeout > 30000) {
417 /* timeout is too big */
420 length = UGETW(req->wLength);
422 DPRINTFN(5, "udev=%p bmRequestType=0x%02x bRequest=0x%02x "
423 "wValue=0x%02x%02x wIndex=0x%02x%02x wLength=0x%02x%02x\n",
424 udev, req->bmRequestType, req->bRequest,
425 req->wValue[1], req->wValue[0],
426 req->wIndex[1], req->wIndex[0],
427 req->wLength[1], req->wLength[0]);
429 /* Check if the device is still alive */
430 if (udev->state < USB_STATE_POWERED) {
431 DPRINTF("usb device has gone\n");
432 return (USB_ERR_NOT_CONFIGURED);
436 * Set "actlen" to a known value in case the caller does not
437 * check the return value:
442 #if (USB_HAVE_USER_IO == 0)
443 if (flags & USB_USER_DATA_PTR)
444 return (USB_ERR_INVAL);
446 if ((mtx != NULL) && (mtx != &Giant)) {
448 mtx_assert(mtx, MA_NOTOWNED);
452 * Grab the USB device enumeration SX-lock serialization is
453 * achieved when multiple threads are involved:
455 do_unlock = usbd_enum_lock(udev);
458 * We need to allow suspend and resume at this point, else the
459 * control transfer will timeout if the device is suspended!
461 usbd_sr_unlock(udev);
463 hr_func = usbd_get_hr_func(udev);
465 if (hr_func != NULL) {
466 DPRINTF("Handle Request function is set\n");
471 if (!(req->bmRequestType & UT_READ)) {
473 DPRINTFN(1, "The handle request function "
474 "does not support writing data!\n");
480 /* The root HUB code needs the BUS lock locked */
482 USB_BUS_LOCK(udev->bus);
483 err = (hr_func) (udev, req, &desc, &temp);
484 USB_BUS_UNLOCK(udev->bus);
490 if (!(flags & USB_SHORT_XFER_OK)) {
491 err = USB_ERR_SHORT_XFER;
501 if (flags & USB_USER_DATA_PTR) {
502 if (copyout(desc, data, length)) {
508 memcpy(data, desc, length);
510 goto done; /* success */
514 * Setup a new USB transfer or use the existing one, if any:
516 usbd_ctrl_transfer_setup(udev);
518 xfer = udev->ctrl_xfer[0];
520 /* most likely out of memory */
527 usbd_get_debug_bits(udev, req, &dbg);
529 /* Check for fault injection */
531 flags |= USB_DELAY_STATUS_STAGE;
535 if (flags & USB_DELAY_STATUS_STAGE)
536 xfer->flags.manual_status = 1;
538 xfer->flags.manual_status = 0;
540 if (flags & USB_SHORT_XFER_OK)
541 xfer->flags.short_xfer_ok = 1;
543 xfer->flags.short_xfer_ok = 0;
545 xfer->timeout = timeout;
549 max_ticks = USB_MS_TO_TICKS(timeout);
551 usbd_copy_in(xfer->frbuffers, 0, req, sizeof(*req));
553 usbd_xfer_set_frame_len(xfer, 0, sizeof(*req));
557 if (temp > usbd_xfer_max_len(xfer)) {
558 temp = usbd_xfer_max_len(xfer);
561 if (xfer->flags.manual_status) {
562 if (usbd_xfer_frame_len(xfer, 0) != 0) {
563 /* Execute data stage separately */
565 } else if (temp > 0) {
570 if (dbg.ds_delay > 0) {
572 xfer->xroot->xfer_mtx,
573 USB_MS_TO_TICKS(dbg.ds_delay));
574 /* make sure we don't time out */
580 usbd_xfer_set_frame_len(xfer, 1, temp);
583 if (!(req->bmRequestType & UT_READ)) {
585 if (flags & USB_USER_DATA_PTR) {
586 USB_XFER_UNLOCK(xfer);
587 err = usbd_copy_in_user(xfer->frbuffers + 1,
596 usbd_copy_in(xfer->frbuffers + 1,
599 usbd_xfer_set_frames(xfer, 2);
601 if (usbd_xfer_frame_len(xfer, 0) == 0) {
602 if (xfer->flags.manual_status) {
608 if (dbg.ss_delay > 0) {
610 xfer->xroot->xfer_mtx,
611 USB_MS_TO_TICKS(dbg.ss_delay));
612 /* make sure we don't time out */
616 xfer->flags.manual_status = 0;
621 usbd_xfer_set_frames(xfer, 1);
624 usbd_transfer_start(xfer);
626 while (usbd_transfer_pending(xfer)) {
627 cv_wait(&udev->ctrlreq_cv,
628 xfer->xroot->xfer_mtx);
637 /* get actual length of DATA stage */
639 if (xfer->aframes < 2) {
642 acttemp = usbd_xfer_frame_len(xfer, 1);
645 /* check for short packet */
647 if (temp > acttemp) {
652 if (req->bmRequestType & UT_READ) {
654 if (flags & USB_USER_DATA_PTR) {
655 USB_XFER_UNLOCK(xfer);
656 err = usbd_copy_out_user(xfer->frbuffers + 1,
665 usbd_copy_out(xfer->frbuffers + 1,
670 * Clear "frlengths[0]" so that we don't send the setup
673 usbd_xfer_set_frame_len(xfer, 0, 0);
675 /* update length and data pointer */
677 data = USB_ADD_BYTES(data, temp);
682 /* check for timeout */
684 delta_ticks = ticks - start_ticks;
685 if (delta_ticks > max_ticks) {
687 err = USB_ERR_TIMEOUT;
697 * Make sure that the control endpoint is no longer
698 * blocked in case of a non-transfer related error:
700 usbd_transfer_stop(xfer);
702 USB_XFER_UNLOCK(xfer);
708 usbd_enum_unlock(udev);
710 if ((mtx != NULL) && (mtx != &Giant))
713 return ((usb_error_t)err);
716 /*------------------------------------------------------------------------*
717 * usbd_do_request_proc - factored out code
719 * This function is factored out code. It does basically the same like
720 * usbd_do_request_flags, except it will check the status of the
721 * passed process argument before doing the USB request. If the
722 * process is draining the USB_ERR_IOERROR code will be returned. It
723 * is assumed that the mutex associated with the process is locked
724 * when calling this function.
725 *------------------------------------------------------------------------*/
727 usbd_do_request_proc(struct usb_device *udev, struct usb_process *pproc,
728 struct usb_device_request *req, void *data, uint16_t flags,
729 uint16_t *actlen, usb_timeout_t timeout)
734 /* get request data length */
735 len = UGETW(req->wLength);
737 /* check if the device is being detached */
738 if (usb_proc_is_gone(pproc)) {
739 err = USB_ERR_IOERROR;
743 /* forward the USB request */
744 err = usbd_do_request_flags(udev, pproc->up_mtx,
745 req, data, flags, actlen, timeout);
748 /* on failure we zero the data */
749 /* on short packet we zero the unused data */
750 if ((len != 0) && (req->bmRequestType & UE_DIR_IN)) {
752 memset(data, 0, len);
753 else if (actlen && *actlen != len)
754 memset(((uint8_t *)data) + *actlen, 0, len - *actlen);
759 /*------------------------------------------------------------------------*
760 * usbd_req_reset_port
762 * This function will instruct a USB HUB to perform a reset sequence
763 * on the specified port number.
766 * 0: Success. The USB device should now be at address zero.
767 * Else: Failure. No USB device is present and the USB port should be
769 *------------------------------------------------------------------------*/
771 usbd_req_reset_port(struct usb_device *udev, struct mtx *mtx, uint8_t port)
773 struct usb_port_status ps;
781 /* clear any leftover port reset changes first */
782 usbd_req_clear_port_feature(
783 udev, mtx, port, UHF_C_PORT_RESET);
785 /* assert port reset on the given port */
786 err = usbd_req_set_port_feature(
787 udev, mtx, port, UHF_PORT_RESET);
789 /* check for errors */
796 /* wait for the device to recover from reset */
797 usb_pause_mtx(mtx, USB_MS_TO_TICKS(usb_port_reset_delay));
798 n += usb_port_reset_delay;
799 err = usbd_req_get_port_status(udev, mtx, &ps, port);
803 status = UGETW(ps.wPortStatus);
804 change = UGETW(ps.wPortChange);
806 /* if the device disappeared, just give up */
807 if (!(status & UPS_CURRENT_CONNECT_STATUS))
810 /* check if reset is complete */
811 if (change & UPS_C_PORT_RESET)
815 * Some Virtual Machines like VirtualBox 4.x fail to
816 * generate a port reset change event. Check if reset
817 * is no longer asserted.
819 if (!(status & UPS_RESET))
822 /* check for timeout */
829 /* clear port reset first */
830 err = usbd_req_clear_port_feature(
831 udev, mtx, port, UHF_C_PORT_RESET);
835 /* check for timeout */
837 err = USB_ERR_TIMEOUT;
840 /* wait for the device to recover from reset */
841 usb_pause_mtx(mtx, USB_MS_TO_TICKS(usb_port_reset_recovery));
844 DPRINTFN(2, "port %d reset returning error=%s\n",
845 port, usbd_errstr(err));
849 /*------------------------------------------------------------------------*
850 * usbd_req_warm_reset_port
852 * This function will instruct an USB HUB to perform a warm reset
853 * sequence on the specified port number. This kind of reset is not
854 * mandatory for LOW-, FULL- and HIGH-speed USB HUBs and is targeted
855 * for SUPER-speed USB HUBs.
858 * 0: Success. The USB device should now be available again.
859 * Else: Failure. No USB device is present and the USB port should be
861 *------------------------------------------------------------------------*/
863 usbd_req_warm_reset_port(struct usb_device *udev, struct mtx *mtx,
866 struct usb_port_status ps;
874 err = usbd_req_get_port_status(udev, mtx, &ps, port);
878 status = UGETW(ps.wPortStatus);
880 switch (UPS_PORT_LINK_STATE_GET(status)) {
882 case UPS_PORT_LS_COMP_MODE:
883 case UPS_PORT_LS_LOOPBACK:
884 case UPS_PORT_LS_SS_INA:
887 DPRINTF("Wrong state for warm reset\n");
891 /* clear any leftover warm port reset changes first */
892 usbd_req_clear_port_feature(udev, mtx,
893 port, UHF_C_BH_PORT_RESET);
895 /* set warm port reset */
896 err = usbd_req_set_port_feature(udev, mtx,
897 port, UHF_BH_PORT_RESET);
903 /* wait for the device to recover from reset */
904 usb_pause_mtx(mtx, USB_MS_TO_TICKS(usb_port_reset_delay));
905 n += usb_port_reset_delay;
906 err = usbd_req_get_port_status(udev, mtx, &ps, port);
910 status = UGETW(ps.wPortStatus);
911 change = UGETW(ps.wPortChange);
913 /* if the device disappeared, just give up */
914 if (!(status & UPS_CURRENT_CONNECT_STATUS))
917 /* check if reset is complete */
918 if (change & UPS_C_BH_PORT_RESET)
921 /* check for timeout */
928 /* clear port reset first */
929 err = usbd_req_clear_port_feature(
930 udev, mtx, port, UHF_C_BH_PORT_RESET);
934 /* check for timeout */
936 err = USB_ERR_TIMEOUT;
939 /* wait for the device to recover from reset */
940 usb_pause_mtx(mtx, USB_MS_TO_TICKS(usb_port_reset_recovery));
943 DPRINTFN(2, "port %d warm reset returning error=%s\n",
944 port, usbd_errstr(err));
948 /*------------------------------------------------------------------------*
951 * This function can be used to retrieve USB descriptors. It contains
952 * some additional logic like zeroing of missing descriptor bytes and
953 * retrying an USB descriptor in case of failure. The "min_len"
954 * argument specifies the minimum descriptor length. The "max_len"
955 * argument specifies the maximum descriptor length. If the real
956 * descriptor length is less than the minimum length the missing
957 * byte(s) will be zeroed. The type field, the second byte of the USB
958 * descriptor, will get forced to the correct type. If the "actlen"
959 * pointer is non-NULL, the actual length of the transfer will get
960 * stored in the 16-bit unsigned integer which it is pointing to. The
961 * first byte of the descriptor will not get updated. If the "actlen"
962 * pointer is NULL the first byte of the descriptor will get updated
963 * to reflect the actual length instead. If "min_len" is not equal to
964 * "max_len" then this function will try to retrive the beginning of
965 * the descriptor and base the maximum length on the first byte of the
971 *------------------------------------------------------------------------*/
973 usbd_req_get_desc(struct usb_device *udev,
974 struct mtx *mtx, uint16_t *actlen, void *desc,
975 uint16_t min_len, uint16_t max_len,
976 uint16_t id, uint8_t type, uint8_t index,
979 struct usb_device_request req;
983 DPRINTFN(4, "id=%d, type=%d, index=%d, max_len=%d\n",
984 id, type, index, max_len);
986 req.bmRequestType = UT_READ_DEVICE;
987 req.bRequest = UR_GET_DESCRIPTOR;
988 USETW2(req.wValue, type, index);
989 USETW(req.wIndex, id);
993 if ((min_len < 2) || (max_len < 2)) {
997 USETW(req.wLength, min_len);
999 err = usbd_do_request_flags(udev, mtx, &req,
1000 desc, 0, NULL, 1000);
1008 usb_pause_mtx(mtx, hz / 5);
1014 if (min_len == max_len) {
1016 /* enforce correct length */
1017 if ((buf[0] > min_len) && (actlen == NULL))
1020 /* enforce correct type */
1027 if (max_len > buf[0]) {
1030 /* zero minimum data */
1032 while (min_len > max_len) {
1037 /* set new minimum length */
1042 if (actlen != NULL) {
1051 /*------------------------------------------------------------------------*
1052 * usbd_req_get_string_any
1054 * This function will return the string given by "string_index"
1055 * using the first language ID. The maximum length "len" includes
1056 * the terminating zero. The "len" argument should be twice as
1057 * big pluss 2 bytes, compared with the actual maximum string length !
1062 *------------------------------------------------------------------------*/
1064 usbd_req_get_string_any(struct usb_device *udev, struct mtx *mtx, char *buf,
1065 uint16_t len, uint8_t string_index)
1076 /* should not happen */
1077 return (USB_ERR_NORMAL_COMPLETION);
1079 if (string_index == 0) {
1080 /* this is the language table */
1082 return (USB_ERR_INVAL);
1084 if (udev->flags.no_strings) {
1086 return (USB_ERR_STALLED);
1088 err = usbd_req_get_string_desc
1089 (udev, mtx, buf, len, udev->langid, string_index);
1094 temp = (uint8_t *)buf;
1097 /* string length is too short */
1099 return (USB_ERR_INVAL);
1101 /* reserve one byte for terminating zero */
1104 /* find maximum length */
1106 n = (temp[0] / 2) - 1;
1110 /* skip descriptor header */
1113 /* reset swap state */
1116 /* convert and filter */
1117 for (i = 0; (i != n); i++) {
1118 c = UGETW(temp + (2 * i));
1120 /* convert from Unicode, handle buggy strings */
1121 if (((c & 0xff00) == 0) && (swap & 1)) {
1122 /* Little Endian, default */
1125 } else if (((c & 0x00ff) == 0) && (swap & 2)) {
1130 /* silently skip bad character */
1135 * Filter by default - We only allow alphanumerical
1136 * and a few more to avoid any problems with scripts
1149 /* silently skip bad character */
1151 *s = 0; /* zero terminate resulting string */
1152 return (USB_ERR_NORMAL_COMPLETION);
1155 /*------------------------------------------------------------------------*
1156 * usbd_req_get_string_desc
1158 * If you don't know the language ID, consider using
1159 * "usbd_req_get_string_any()".
1164 *------------------------------------------------------------------------*/
1166 usbd_req_get_string_desc(struct usb_device *udev, struct mtx *mtx, void *sdesc,
1167 uint16_t max_len, uint16_t lang_id,
1168 uint8_t string_index)
1170 return (usbd_req_get_desc(udev, mtx, NULL, sdesc, 2, max_len, lang_id,
1171 UDESC_STRING, string_index, 0));
1174 /*------------------------------------------------------------------------*
1175 * usbd_req_get_config_desc_ptr
1177 * This function is used in device side mode to retrieve the pointer
1178 * to the generated config descriptor. This saves allocating space for
1179 * an additional config descriptor when setting the configuration.
1184 *------------------------------------------------------------------------*/
1186 usbd_req_get_descriptor_ptr(struct usb_device *udev,
1187 struct usb_config_descriptor **ppcd, uint16_t wValue)
1189 struct usb_device_request req;
1190 usb_handle_req_t *hr_func;
1195 req.bmRequestType = UT_READ_DEVICE;
1196 req.bRequest = UR_GET_DESCRIPTOR;
1197 USETW(req.wValue, wValue);
1198 USETW(req.wIndex, 0);
1199 USETW(req.wLength, 0);
1204 hr_func = usbd_get_hr_func(udev);
1206 if (hr_func == NULL)
1207 err = USB_ERR_INVAL;
1209 USB_BUS_LOCK(udev->bus);
1210 err = (hr_func) (udev, &req, &ptr, &len);
1211 USB_BUS_UNLOCK(udev->bus);
1216 else if (ptr == NULL)
1217 err = USB_ERR_INVAL;
1219 *ppcd = __DECONST(struct usb_config_descriptor *, ptr);
1224 /*------------------------------------------------------------------------*
1225 * usbd_req_get_config_desc
1230 *------------------------------------------------------------------------*/
1232 usbd_req_get_config_desc(struct usb_device *udev, struct mtx *mtx,
1233 struct usb_config_descriptor *d, uint8_t conf_index)
1237 DPRINTFN(4, "confidx=%d\n", conf_index);
1239 err = usbd_req_get_desc(udev, mtx, NULL, d, sizeof(*d),
1240 sizeof(*d), 0, UDESC_CONFIG, conf_index, 0);
1244 /* Extra sanity checking */
1245 if (UGETW(d->wTotalLength) < (uint16_t)sizeof(*d)) {
1246 err = USB_ERR_INVAL;
1252 /*------------------------------------------------------------------------*
1253 * usbd_req_get_config_desc_full
1255 * This function gets the complete USB configuration descriptor and
1256 * ensures that "wTotalLength" is correct.
1261 *------------------------------------------------------------------------*/
1263 usbd_req_get_config_desc_full(struct usb_device *udev, struct mtx *mtx,
1264 struct usb_config_descriptor **ppcd, struct malloc_type *mtype,
1267 struct usb_config_descriptor cd;
1268 struct usb_config_descriptor *cdesc;
1272 DPRINTFN(4, "index=%d\n", index);
1276 err = usbd_req_get_config_desc(udev, mtx, &cd, index);
1280 /* get full descriptor */
1281 len = UGETW(cd.wTotalLength);
1282 if (len < sizeof(*cdesc)) {
1283 /* corrupt descriptor */
1284 return (USB_ERR_INVAL);
1286 cdesc = malloc(len, mtype, M_WAITOK);
1287 if (cdesc == NULL) {
1288 return (USB_ERR_NOMEM);
1290 err = usbd_req_get_desc(udev, mtx, NULL, cdesc, len, len, 0,
1291 UDESC_CONFIG, index, 3);
1296 /* make sure that the device is not fooling us: */
1297 USETW(cdesc->wTotalLength, len);
1301 return (0); /* success */
1304 /*------------------------------------------------------------------------*
1305 * usbd_req_get_device_desc
1310 *------------------------------------------------------------------------*/
1312 usbd_req_get_device_desc(struct usb_device *udev, struct mtx *mtx,
1313 struct usb_device_descriptor *d)
1316 return (usbd_req_get_desc(udev, mtx, NULL, d, sizeof(*d),
1317 sizeof(*d), 0, UDESC_DEVICE, 0, 3));
1320 /*------------------------------------------------------------------------*
1321 * usbd_req_get_alt_interface_no
1326 *------------------------------------------------------------------------*/
1328 usbd_req_get_alt_interface_no(struct usb_device *udev, struct mtx *mtx,
1329 uint8_t *alt_iface_no, uint8_t iface_index)
1331 struct usb_interface *iface = usbd_get_iface(udev, iface_index);
1332 struct usb_device_request req;
1334 if ((iface == NULL) || (iface->idesc == NULL))
1335 return (USB_ERR_INVAL);
1337 req.bmRequestType = UT_READ_INTERFACE;
1338 req.bRequest = UR_GET_INTERFACE;
1339 USETW(req.wValue, 0);
1340 req.wIndex[0] = iface->idesc->bInterfaceNumber;
1342 USETW(req.wLength, 1);
1343 return (usbd_do_request(udev, mtx, &req, alt_iface_no));
1346 /*------------------------------------------------------------------------*
1347 * usbd_req_set_alt_interface_no
1352 *------------------------------------------------------------------------*/
1354 usbd_req_set_alt_interface_no(struct usb_device *udev, struct mtx *mtx,
1355 uint8_t iface_index, uint8_t alt_no)
1357 struct usb_interface *iface = usbd_get_iface(udev, iface_index);
1358 struct usb_device_request req;
1360 if ((iface == NULL) || (iface->idesc == NULL))
1361 return (USB_ERR_INVAL);
1363 req.bmRequestType = UT_WRITE_INTERFACE;
1364 req.bRequest = UR_SET_INTERFACE;
1365 req.wValue[0] = alt_no;
1367 req.wIndex[0] = iface->idesc->bInterfaceNumber;
1369 USETW(req.wLength, 0);
1370 return (usbd_do_request(udev, mtx, &req, 0));
1373 /*------------------------------------------------------------------------*
1374 * usbd_req_get_device_status
1379 *------------------------------------------------------------------------*/
1381 usbd_req_get_device_status(struct usb_device *udev, struct mtx *mtx,
1382 struct usb_status *st)
1384 struct usb_device_request req;
1386 req.bmRequestType = UT_READ_DEVICE;
1387 req.bRequest = UR_GET_STATUS;
1388 USETW(req.wValue, 0);
1389 USETW(req.wIndex, 0);
1390 USETW(req.wLength, sizeof(*st));
1391 return (usbd_do_request(udev, mtx, &req, st));
1394 /*------------------------------------------------------------------------*
1395 * usbd_req_get_hub_descriptor
1400 *------------------------------------------------------------------------*/
1402 usbd_req_get_hub_descriptor(struct usb_device *udev, struct mtx *mtx,
1403 struct usb_hub_descriptor *hd, uint8_t nports)
1405 struct usb_device_request req;
1406 uint16_t len = (nports + 7 + (8 * 8)) / 8;
1408 req.bmRequestType = UT_READ_CLASS_DEVICE;
1409 req.bRequest = UR_GET_DESCRIPTOR;
1410 USETW2(req.wValue, UDESC_HUB, 0);
1411 USETW(req.wIndex, 0);
1412 USETW(req.wLength, len);
1413 return (usbd_do_request(udev, mtx, &req, hd));
1416 /*------------------------------------------------------------------------*
1417 * usbd_req_get_ss_hub_descriptor
1422 *------------------------------------------------------------------------*/
1424 usbd_req_get_ss_hub_descriptor(struct usb_device *udev, struct mtx *mtx,
1425 struct usb_hub_ss_descriptor *hd, uint8_t nports)
1427 struct usb_device_request req;
1428 uint16_t len = sizeof(*hd) - 32 + 1 + ((nports + 7) / 8);
1430 req.bmRequestType = UT_READ_CLASS_DEVICE;
1431 req.bRequest = UR_GET_DESCRIPTOR;
1432 USETW2(req.wValue, UDESC_SS_HUB, 0);
1433 USETW(req.wIndex, 0);
1434 USETW(req.wLength, len);
1435 return (usbd_do_request(udev, mtx, &req, hd));
1438 /*------------------------------------------------------------------------*
1439 * usbd_req_get_hub_status
1444 *------------------------------------------------------------------------*/
1446 usbd_req_get_hub_status(struct usb_device *udev, struct mtx *mtx,
1447 struct usb_hub_status *st)
1449 struct usb_device_request req;
1451 req.bmRequestType = UT_READ_CLASS_DEVICE;
1452 req.bRequest = UR_GET_STATUS;
1453 USETW(req.wValue, 0);
1454 USETW(req.wIndex, 0);
1455 USETW(req.wLength, sizeof(struct usb_hub_status));
1456 return (usbd_do_request(udev, mtx, &req, st));
1459 /*------------------------------------------------------------------------*
1460 * usbd_req_set_address
1462 * This function is used to set the address for an USB device. After
1463 * port reset the USB device will respond at address zero.
1468 *------------------------------------------------------------------------*/
1470 usbd_req_set_address(struct usb_device *udev, struct mtx *mtx, uint16_t addr)
1472 struct usb_device_request req;
1475 DPRINTFN(6, "setting device address=%d\n", addr);
1477 req.bmRequestType = UT_WRITE_DEVICE;
1478 req.bRequest = UR_SET_ADDRESS;
1479 USETW(req.wValue, addr);
1480 USETW(req.wIndex, 0);
1481 USETW(req.wLength, 0);
1483 err = USB_ERR_INVAL;
1485 /* check if USB controller handles set address */
1486 if (udev->bus->methods->set_address != NULL)
1487 err = (udev->bus->methods->set_address) (udev, mtx, addr);
1489 if (err != USB_ERR_INVAL)
1492 /* Setting the address should not take more than 1 second ! */
1493 err = usbd_do_request_flags(udev, mtx, &req, NULL,
1494 USB_DELAY_STATUS_STAGE, NULL, 1000);
1497 /* allow device time to set new address */
1499 USB_MS_TO_TICKS(usb_set_address_settle));
1504 /*------------------------------------------------------------------------*
1505 * usbd_req_get_port_status
1510 *------------------------------------------------------------------------*/
1512 usbd_req_get_port_status(struct usb_device *udev, struct mtx *mtx,
1513 struct usb_port_status *ps, uint8_t port)
1515 struct usb_device_request req;
1517 req.bmRequestType = UT_READ_CLASS_OTHER;
1518 req.bRequest = UR_GET_STATUS;
1519 USETW(req.wValue, 0);
1520 req.wIndex[0] = port;
1522 USETW(req.wLength, sizeof *ps);
1523 return (usbd_do_request(udev, mtx, &req, ps));
1526 /*------------------------------------------------------------------------*
1527 * usbd_req_clear_hub_feature
1532 *------------------------------------------------------------------------*/
1534 usbd_req_clear_hub_feature(struct usb_device *udev, struct mtx *mtx,
1537 struct usb_device_request req;
1539 req.bmRequestType = UT_WRITE_CLASS_DEVICE;
1540 req.bRequest = UR_CLEAR_FEATURE;
1541 USETW(req.wValue, sel);
1542 USETW(req.wIndex, 0);
1543 USETW(req.wLength, 0);
1544 return (usbd_do_request(udev, mtx, &req, 0));
1547 /*------------------------------------------------------------------------*
1548 * usbd_req_set_hub_feature
1553 *------------------------------------------------------------------------*/
1555 usbd_req_set_hub_feature(struct usb_device *udev, struct mtx *mtx,
1558 struct usb_device_request req;
1560 req.bmRequestType = UT_WRITE_CLASS_DEVICE;
1561 req.bRequest = UR_SET_FEATURE;
1562 USETW(req.wValue, sel);
1563 USETW(req.wIndex, 0);
1564 USETW(req.wLength, 0);
1565 return (usbd_do_request(udev, mtx, &req, 0));
1568 /*------------------------------------------------------------------------*
1569 * usbd_req_set_hub_u1_timeout
1574 *------------------------------------------------------------------------*/
1576 usbd_req_set_hub_u1_timeout(struct usb_device *udev, struct mtx *mtx,
1577 uint8_t port, uint8_t timeout)
1579 struct usb_device_request req;
1581 req.bmRequestType = UT_WRITE_CLASS_OTHER;
1582 req.bRequest = UR_SET_FEATURE;
1583 USETW(req.wValue, UHF_PORT_U1_TIMEOUT);
1584 req.wIndex[0] = port;
1585 req.wIndex[1] = timeout;
1586 USETW(req.wLength, 0);
1587 return (usbd_do_request(udev, mtx, &req, 0));
1590 /*------------------------------------------------------------------------*
1591 * usbd_req_set_hub_u2_timeout
1596 *------------------------------------------------------------------------*/
1598 usbd_req_set_hub_u2_timeout(struct usb_device *udev, struct mtx *mtx,
1599 uint8_t port, uint8_t timeout)
1601 struct usb_device_request req;
1603 req.bmRequestType = UT_WRITE_CLASS_OTHER;
1604 req.bRequest = UR_SET_FEATURE;
1605 USETW(req.wValue, UHF_PORT_U2_TIMEOUT);
1606 req.wIndex[0] = port;
1607 req.wIndex[1] = timeout;
1608 USETW(req.wLength, 0);
1609 return (usbd_do_request(udev, mtx, &req, 0));
1612 /*------------------------------------------------------------------------*
1613 * usbd_req_set_hub_depth
1618 *------------------------------------------------------------------------*/
1620 usbd_req_set_hub_depth(struct usb_device *udev, struct mtx *mtx,
1623 struct usb_device_request req;
1625 req.bmRequestType = UT_WRITE_CLASS_DEVICE;
1626 req.bRequest = UR_SET_HUB_DEPTH;
1627 USETW(req.wValue, depth);
1628 USETW(req.wIndex, 0);
1629 USETW(req.wLength, 0);
1630 return (usbd_do_request(udev, mtx, &req, 0));
1633 /*------------------------------------------------------------------------*
1634 * usbd_req_clear_port_feature
1639 *------------------------------------------------------------------------*/
1641 usbd_req_clear_port_feature(struct usb_device *udev, struct mtx *mtx,
1642 uint8_t port, uint16_t sel)
1644 struct usb_device_request req;
1646 req.bmRequestType = UT_WRITE_CLASS_OTHER;
1647 req.bRequest = UR_CLEAR_FEATURE;
1648 USETW(req.wValue, sel);
1649 req.wIndex[0] = port;
1651 USETW(req.wLength, 0);
1652 return (usbd_do_request(udev, mtx, &req, 0));
1655 /*------------------------------------------------------------------------*
1656 * usbd_req_set_port_feature
1661 *------------------------------------------------------------------------*/
1663 usbd_req_set_port_feature(struct usb_device *udev, struct mtx *mtx,
1664 uint8_t port, uint16_t sel)
1666 struct usb_device_request req;
1668 req.bmRequestType = UT_WRITE_CLASS_OTHER;
1669 req.bRequest = UR_SET_FEATURE;
1670 USETW(req.wValue, sel);
1671 req.wIndex[0] = port;
1673 USETW(req.wLength, 0);
1674 return (usbd_do_request(udev, mtx, &req, 0));
1677 /*------------------------------------------------------------------------*
1678 * usbd_req_set_protocol
1683 *------------------------------------------------------------------------*/
1685 usbd_req_set_protocol(struct usb_device *udev, struct mtx *mtx,
1686 uint8_t iface_index, uint16_t report)
1688 struct usb_interface *iface = usbd_get_iface(udev, iface_index);
1689 struct usb_device_request req;
1691 if ((iface == NULL) || (iface->idesc == NULL)) {
1692 return (USB_ERR_INVAL);
1694 DPRINTFN(5, "iface=%p, report=%d, endpt=%d\n",
1695 iface, report, iface->idesc->bInterfaceNumber);
1697 req.bmRequestType = UT_WRITE_CLASS_INTERFACE;
1698 req.bRequest = UR_SET_PROTOCOL;
1699 USETW(req.wValue, report);
1700 req.wIndex[0] = iface->idesc->bInterfaceNumber;
1702 USETW(req.wLength, 0);
1703 return (usbd_do_request(udev, mtx, &req, 0));
1706 /*------------------------------------------------------------------------*
1707 * usbd_req_set_report
1712 *------------------------------------------------------------------------*/
1714 usbd_req_set_report(struct usb_device *udev, struct mtx *mtx, void *data, uint16_t len,
1715 uint8_t iface_index, uint8_t type, uint8_t id)
1717 struct usb_interface *iface = usbd_get_iface(udev, iface_index);
1718 struct usb_device_request req;
1720 if ((iface == NULL) || (iface->idesc == NULL)) {
1721 return (USB_ERR_INVAL);
1723 DPRINTFN(5, "len=%d\n", len);
1725 req.bmRequestType = UT_WRITE_CLASS_INTERFACE;
1726 req.bRequest = UR_SET_REPORT;
1727 USETW2(req.wValue, type, id);
1728 req.wIndex[0] = iface->idesc->bInterfaceNumber;
1730 USETW(req.wLength, len);
1731 return (usbd_do_request(udev, mtx, &req, data));
1734 /*------------------------------------------------------------------------*
1735 * usbd_req_get_report
1740 *------------------------------------------------------------------------*/
1742 usbd_req_get_report(struct usb_device *udev, struct mtx *mtx, void *data,
1743 uint16_t len, uint8_t iface_index, uint8_t type, uint8_t id)
1745 struct usb_interface *iface = usbd_get_iface(udev, iface_index);
1746 struct usb_device_request req;
1748 if ((iface == NULL) || (iface->idesc == NULL)) {
1749 return (USB_ERR_INVAL);
1751 DPRINTFN(5, "len=%d\n", len);
1753 req.bmRequestType = UT_READ_CLASS_INTERFACE;
1754 req.bRequest = UR_GET_REPORT;
1755 USETW2(req.wValue, type, id);
1756 req.wIndex[0] = iface->idesc->bInterfaceNumber;
1758 USETW(req.wLength, len);
1759 return (usbd_do_request(udev, mtx, &req, data));
1762 /*------------------------------------------------------------------------*
1768 *------------------------------------------------------------------------*/
1770 usbd_req_set_idle(struct usb_device *udev, struct mtx *mtx,
1771 uint8_t iface_index, uint8_t duration, uint8_t id)
1773 struct usb_interface *iface = usbd_get_iface(udev, iface_index);
1774 struct usb_device_request req;
1776 if ((iface == NULL) || (iface->idesc == NULL)) {
1777 return (USB_ERR_INVAL);
1779 DPRINTFN(5, "%d %d\n", duration, id);
1781 req.bmRequestType = UT_WRITE_CLASS_INTERFACE;
1782 req.bRequest = UR_SET_IDLE;
1783 USETW2(req.wValue, duration, id);
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_get_report_descriptor
1796 *------------------------------------------------------------------------*/
1798 usbd_req_get_report_descriptor(struct usb_device *udev, struct mtx *mtx,
1799 void *d, uint16_t size, uint8_t iface_index)
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 req.bmRequestType = UT_READ_INTERFACE;
1808 req.bRequest = UR_GET_DESCRIPTOR;
1809 USETW2(req.wValue, UDESC_REPORT, 0); /* report id should be 0 */
1810 req.wIndex[0] = iface->idesc->bInterfaceNumber;
1812 USETW(req.wLength, size);
1813 return (usbd_do_request(udev, mtx, &req, d));
1816 /*------------------------------------------------------------------------*
1817 * usbd_req_set_config
1819 * This function is used to select the current configuration number in
1820 * both USB device side mode and USB host side mode. When setting the
1821 * configuration the function of the interfaces can change.
1826 *------------------------------------------------------------------------*/
1828 usbd_req_set_config(struct usb_device *udev, struct mtx *mtx, uint8_t conf)
1830 struct usb_device_request req;
1832 DPRINTF("setting config %d\n", conf);
1834 /* do "set configuration" request */
1836 req.bmRequestType = UT_WRITE_DEVICE;
1837 req.bRequest = UR_SET_CONFIG;
1838 req.wValue[0] = conf;
1840 USETW(req.wIndex, 0);
1841 USETW(req.wLength, 0);
1842 return (usbd_do_request(udev, mtx, &req, 0));
1845 /*------------------------------------------------------------------------*
1846 * usbd_req_get_config
1851 *------------------------------------------------------------------------*/
1853 usbd_req_get_config(struct usb_device *udev, struct mtx *mtx, uint8_t *pconf)
1855 struct usb_device_request req;
1857 req.bmRequestType = UT_READ_DEVICE;
1858 req.bRequest = UR_GET_CONFIG;
1859 USETW(req.wValue, 0);
1860 USETW(req.wIndex, 0);
1861 USETW(req.wLength, 1);
1862 return (usbd_do_request(udev, mtx, &req, pconf));
1865 /*------------------------------------------------------------------------*
1866 * usbd_setup_device_desc
1867 *------------------------------------------------------------------------*/
1869 usbd_setup_device_desc(struct usb_device *udev, struct mtx *mtx)
1874 * Get the first 8 bytes of the device descriptor !
1876 * NOTE: "usbd_do_request()" will check the device descriptor
1877 * next time we do a request to see if the maximum packet size
1878 * changed! The 8 first bytes of the device descriptor
1879 * contains the maximum packet size to use on control endpoint
1880 * 0. If this value is different from "USB_MAX_IPACKET" a new
1881 * USB control request will be setup!
1883 switch (udev->speed) {
1884 case USB_SPEED_FULL:
1886 err = usbd_req_get_desc(udev, mtx, NULL, &udev->ddesc,
1887 USB_MAX_IPACKET, USB_MAX_IPACKET, 0, UDESC_DEVICE, 0, 0);
1889 DPRINTFN(0, "getting device descriptor "
1890 "at addr %d failed, %s\n", udev->address,
1896 DPRINTF("Minimum MaxPacketSize is large enough "
1897 "to hold the complete device descriptor\n");
1901 /* get the full device descriptor */
1902 err = usbd_req_get_device_desc(udev, mtx, &udev->ddesc);
1904 /* try one more time, if error */
1906 err = usbd_req_get_device_desc(udev, mtx, &udev->ddesc);
1909 DPRINTF("addr=%d, getting full desc failed\n",
1914 DPRINTF("adding unit addr=%d, rev=%02x, class=%d, "
1915 "subclass=%d, protocol=%d, maxpacket=%d, len=%d, speed=%d\n",
1916 udev->address, UGETW(udev->ddesc.bcdUSB),
1917 udev->ddesc.bDeviceClass,
1918 udev->ddesc.bDeviceSubClass,
1919 udev->ddesc.bDeviceProtocol,
1920 udev->ddesc.bMaxPacketSize,
1921 udev->ddesc.bLength,
1927 /*------------------------------------------------------------------------*
1928 * usbd_req_re_enumerate
1930 * NOTE: After this function returns the hardware is in the
1931 * unconfigured state! The application is responsible for setting a
1932 * new configuration.
1937 *------------------------------------------------------------------------*/
1939 usbd_req_re_enumerate(struct usb_device *udev, struct mtx *mtx)
1941 struct usb_device *parent_hub;
1944 uint8_t do_retry = 1;
1946 if (udev->flags.usb_mode != USB_MODE_HOST) {
1947 return (USB_ERR_INVAL);
1949 old_addr = udev->address;
1950 parent_hub = udev->parent_hub;
1951 if (parent_hub == NULL) {
1952 return (USB_ERR_INVAL);
1956 * Try to reset the High Speed parent HUB of a LOW- or FULL-
1957 * speed device, if any.
1959 if (udev->parent_hs_hub != NULL &&
1960 udev->speed != USB_SPEED_HIGH) {
1961 DPRINTF("Trying to reset parent High Speed TT.\n");
1962 err = usbd_req_reset_tt(udev->parent_hs_hub, NULL,
1965 DPRINTF("Resetting parent High "
1966 "Speed TT failed (%s).\n",
1971 /* Try to warm reset first */
1972 if (parent_hub->speed == USB_SPEED_SUPER)
1973 usbd_req_warm_reset_port(parent_hub, mtx, udev->port_no);
1975 /* Try to reset the parent HUB port. */
1976 err = usbd_req_reset_port(parent_hub, mtx, udev->port_no);
1978 DPRINTFN(0, "addr=%d, port reset failed, %s\n",
1979 old_addr, usbd_errstr(err));
1984 * After that the port has been reset our device should be at
1987 udev->address = USB_START_ADDR;
1989 /* reset "bMaxPacketSize" */
1990 udev->ddesc.bMaxPacketSize = USB_MAX_IPACKET;
1992 /* reset USB state */
1993 usb_set_device_state(udev, USB_STATE_POWERED);
1996 * Restore device address:
1998 err = usbd_req_set_address(udev, mtx, old_addr);
2000 /* XXX ignore any errors! */
2001 DPRINTFN(0, "addr=%d, set address failed! (%s, ignored)\n",
2002 old_addr, usbd_errstr(err));
2005 * Restore device address, if the controller driver did not
2008 if (udev->address == USB_START_ADDR)
2009 udev->address = old_addr;
2011 /* setup the device descriptor and the initial "wMaxPacketSize" */
2012 err = usbd_setup_device_desc(udev, mtx);
2015 if (err && do_retry) {
2016 /* give the USB firmware some time to load */
2017 usb_pause_mtx(mtx, hz / 2);
2018 /* no more retries after this retry */
2023 /* restore address */
2024 if (udev->address == USB_START_ADDR)
2025 udev->address = old_addr;
2026 /* update state, if successful */
2028 usb_set_device_state(udev, USB_STATE_ADDRESSED);
2032 /*------------------------------------------------------------------------*
2033 * usbd_req_clear_device_feature
2038 *------------------------------------------------------------------------*/
2040 usbd_req_clear_device_feature(struct usb_device *udev, struct mtx *mtx,
2043 struct usb_device_request req;
2045 req.bmRequestType = UT_WRITE_DEVICE;
2046 req.bRequest = UR_CLEAR_FEATURE;
2047 USETW(req.wValue, sel);
2048 USETW(req.wIndex, 0);
2049 USETW(req.wLength, 0);
2050 return (usbd_do_request(udev, mtx, &req, 0));
2053 /*------------------------------------------------------------------------*
2054 * usbd_req_set_device_feature
2059 *------------------------------------------------------------------------*/
2061 usbd_req_set_device_feature(struct usb_device *udev, struct mtx *mtx,
2064 struct usb_device_request req;
2066 req.bmRequestType = UT_WRITE_DEVICE;
2067 req.bRequest = UR_SET_FEATURE;
2068 USETW(req.wValue, sel);
2069 USETW(req.wIndex, 0);
2070 USETW(req.wLength, 0);
2071 return (usbd_do_request(udev, mtx, &req, 0));
2074 /*------------------------------------------------------------------------*
2080 *------------------------------------------------------------------------*/
2082 usbd_req_reset_tt(struct usb_device *udev, struct mtx *mtx,
2085 struct usb_device_request req;
2087 /* For single TT HUBs the port should be 1 */
2089 if (udev->ddesc.bDeviceClass == UDCLASS_HUB &&
2090 udev->ddesc.bDeviceProtocol == UDPROTO_HSHUBSTT)
2093 req.bmRequestType = UT_WRITE_CLASS_OTHER;
2094 req.bRequest = UR_RESET_TT;
2095 USETW(req.wValue, 0);
2096 req.wIndex[0] = port;
2098 USETW(req.wLength, 0);
2099 return (usbd_do_request(udev, mtx, &req, 0));
2102 /*------------------------------------------------------------------------*
2103 * usbd_req_clear_tt_buffer
2105 * For single TT HUBs the port should be 1.
2110 *------------------------------------------------------------------------*/
2112 usbd_req_clear_tt_buffer(struct usb_device *udev, struct mtx *mtx,
2113 uint8_t port, uint8_t addr, uint8_t type, uint8_t endpoint)
2115 struct usb_device_request req;
2118 /* For single TT HUBs the port should be 1 */
2120 if (udev->ddesc.bDeviceClass == UDCLASS_HUB &&
2121 udev->ddesc.bDeviceProtocol == UDPROTO_HSHUBSTT)
2124 wValue = (endpoint & 0xF) | ((addr & 0x7F) << 4) |
2125 ((endpoint & 0x80) << 8) | ((type & 3) << 12);
2127 req.bmRequestType = UT_WRITE_CLASS_OTHER;
2128 req.bRequest = UR_CLEAR_TT_BUFFER;
2129 USETW(req.wValue, wValue);
2130 req.wIndex[0] = port;
2132 USETW(req.wLength, 0);
2133 return (usbd_do_request(udev, mtx, &req, 0));
2136 /*------------------------------------------------------------------------*
2137 * usbd_req_set_port_link_state
2139 * USB 3.0 specific request
2144 *------------------------------------------------------------------------*/
2146 usbd_req_set_port_link_state(struct usb_device *udev, struct mtx *mtx,
2147 uint8_t port, uint8_t link_state)
2149 struct usb_device_request req;
2151 req.bmRequestType = UT_WRITE_CLASS_OTHER;
2152 req.bRequest = UR_SET_FEATURE;
2153 USETW(req.wValue, UHF_PORT_LINK_STATE);
2154 req.wIndex[0] = port;
2155 req.wIndex[1] = link_state;
2156 USETW(req.wLength, 0);
2157 return (usbd_do_request(udev, mtx, &req, 0));
2160 /*------------------------------------------------------------------------*
2161 * usbd_req_set_lpm_info
2163 * USB 2.0 specific request for Link Power Management.
2167 * USB_ERR_PENDING_REQUESTS: NYET
2168 * USB_ERR_TIMEOUT: TIMEOUT
2169 * USB_ERR_STALL: STALL
2171 *------------------------------------------------------------------------*/
2173 usbd_req_set_lpm_info(struct usb_device *udev, struct mtx *mtx,
2174 uint8_t port, uint8_t besl, uint8_t addr, uint8_t rwe)
2176 struct usb_device_request req;
2180 req.bmRequestType = UT_WRITE_CLASS_OTHER;
2181 req.bRequest = UR_SET_AND_TEST;
2182 USETW(req.wValue, UHF_PORT_L1);
2183 req.wIndex[0] = (port & 0xF) | ((besl & 0xF) << 4);
2184 req.wIndex[1] = (addr & 0x7F) | (rwe ? 0x80 : 0x00);
2185 USETW(req.wLength, sizeof(buf));
2187 /* set default value in case of short transfer */
2190 err = usbd_do_request(udev, mtx, &req, buf);
2195 case 0x00: /* SUCCESS */
2197 case 0x10: /* NYET */
2198 err = USB_ERR_PENDING_REQUESTS;
2200 case 0x11: /* TIMEOUT */
2201 err = USB_ERR_TIMEOUT;
2203 case 0x30: /* STALL */
2204 err = USB_ERR_STALLED;
2206 default: /* reserved */
2207 err = USB_ERR_IOERROR;