3 * Copyright (c) 2008 Hans Petter Selasky. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 #ifdef USB_GLOBAL_INCLUDE_FILE
28 #include USB_GLOBAL_INCLUDE_FILE
30 #include <sys/stdint.h>
31 #include <sys/stddef.h>
32 #include <sys/param.h>
33 #include <sys/queue.h>
34 #include <sys/types.h>
35 #include <sys/systm.h>
36 #include <sys/kernel.h>
38 #include <sys/module.h>
40 #include <sys/mutex.h>
41 #include <sys/condvar.h>
42 #include <sys/sysctl.h>
44 #include <sys/unistd.h>
45 #include <sys/callout.h>
46 #include <sys/malloc.h>
49 #include <sys/fcntl.h>
51 #include <dev/usb/usb.h>
52 #include <dev/usb/usbdi.h>
53 #include <dev/usb/usbdi_util.h>
54 #include <dev/usb/usb_ioctl.h>
62 #define USB_DEBUG_VAR usb_debug
64 #include <dev/usb/usb_core.h>
65 #include <dev/usb/usb_debug.h>
66 #include <dev/usb/usb_process.h>
67 #include <dev/usb/usb_device.h>
68 #include <dev/usb/usb_busdma.h>
69 #include <dev/usb/usb_transfer.h>
70 #include <dev/usb/usb_request.h>
71 #include <dev/usb/usb_dynamic.h>
72 #include <dev/usb/usb_hub.h>
73 #include <dev/usb/usb_util.h>
74 #include <dev/usb/usb_msctest.h>
76 #include <dev/usb/usb_dev.h>
77 #include <dev/usb/usb_generic.h>
80 #include <dev/usb/quirk/usb_quirk.h>
82 #include <dev/usb/usb_controller.h>
83 #include <dev/usb/usb_bus.h>
84 #endif /* USB_GLOBAL_INCLUDE_FILE */
86 /* function prototypes */
88 static void usb_init_endpoint(struct usb_device *, uint8_t,
89 struct usb_endpoint_descriptor *,
90 struct usb_endpoint_ss_comp_descriptor *,
91 struct usb_endpoint *);
92 static void usb_unconfigure(struct usb_device *, uint8_t);
93 static void usb_detach_device_sub(struct usb_device *, device_t *,
95 static uint8_t usb_probe_and_attach_sub(struct usb_device *,
96 struct usb_attach_arg *);
97 static void usb_init_attach_arg(struct usb_device *,
98 struct usb_attach_arg *);
99 static void usb_suspend_resume_sub(struct usb_device *, device_t,
101 static usb_proc_callback_t usbd_clear_stall_proc;
102 static usb_error_t usb_config_parse(struct usb_device *, uint8_t, uint8_t);
103 static void usbd_set_device_strings(struct usb_device *);
105 static void usb_notify_addq(const char *type, struct usb_device *);
108 static void usb_fifo_free_wrap(struct usb_device *, uint8_t, uint8_t);
109 static void usb_cdev_create(struct usb_device *);
110 static void usb_cdev_free(struct usb_device *);
113 /* This variable is global to allow easy access to it: */
116 int usb_template = USB_TEMPLATE;
121 TUNABLE_INT("hw.usb.usb_template", &usb_template);
122 SYSCTL_INT(_hw_usb, OID_AUTO, template, CTLFLAG_RW | CTLFLAG_TUN,
123 &usb_template, 0, "Selected USB device side template");
125 /* English is default language */
127 static int usb_lang_id = 0x0009;
128 static int usb_lang_mask = 0x00FF;
130 TUNABLE_INT("hw.usb.usb_lang_id", &usb_lang_id);
131 SYSCTL_INT(_hw_usb, OID_AUTO, usb_lang_id, CTLFLAG_RW | CTLFLAG_TUN,
132 &usb_lang_id, 0, "Preferred USB language ID");
134 TUNABLE_INT("hw.usb.usb_lang_mask", &usb_lang_mask);
135 SYSCTL_INT(_hw_usb, OID_AUTO, usb_lang_mask, CTLFLAG_RW | CTLFLAG_TUN,
136 &usb_lang_mask, 0, "Preferred USB language mask");
138 static const char* statestr[USB_STATE_MAX] = {
139 [USB_STATE_DETACHED] = "DETACHED",
140 [USB_STATE_ATTACHED] = "ATTACHED",
141 [USB_STATE_POWERED] = "POWERED",
142 [USB_STATE_ADDRESSED] = "ADDRESSED",
143 [USB_STATE_CONFIGURED] = "CONFIGURED",
147 usb_statestr(enum usb_dev_state state)
149 return ((state < USB_STATE_MAX) ? statestr[state] : "UNKNOWN");
153 usb_get_manufacturer(struct usb_device *udev)
155 return (udev->manufacturer ? udev->manufacturer : "Unknown");
159 usb_get_product(struct usb_device *udev)
161 return (udev->product ? udev->product : "");
165 usb_get_serial(struct usb_device *udev)
167 return (udev->serial ? udev->serial : "");
170 /*------------------------------------------------------------------------*
171 * usbd_get_ep_by_addr
173 * This function searches for an USB ep by endpoint address and
179 *------------------------------------------------------------------------*/
180 struct usb_endpoint *
181 usbd_get_ep_by_addr(struct usb_device *udev, uint8_t ea_val)
183 struct usb_endpoint *ep = udev->endpoints;
184 struct usb_endpoint *ep_end = udev->endpoints + udev->endpoints_max;
186 EA_MASK = (UE_DIR_IN | UE_DIR_OUT | UE_ADDR),
190 * According to the USB specification not all bits are used
191 * for the endpoint address. Keep defined bits only:
196 * Iterate accross all the USB endpoints searching for a match
197 * based on the endpoint address:
199 for (; ep != ep_end; ep++) {
201 if (ep->edesc == NULL) {
204 /* do the mask and check the value */
205 if ((ep->edesc->bEndpointAddress & EA_MASK) == ea_val) {
211 * The default endpoint is always present and is checked separately:
213 if ((udev->ctrl_ep.edesc != NULL) &&
214 ((udev->ctrl_ep.edesc->bEndpointAddress & EA_MASK) == ea_val)) {
224 /*------------------------------------------------------------------------*
227 * This function searches for an USB endpoint based on the information
228 * given by the passed "struct usb_config" pointer.
232 * Else: Pointer to "struct usb_endpoint".
233 *------------------------------------------------------------------------*/
234 struct usb_endpoint *
235 usbd_get_endpoint(struct usb_device *udev, uint8_t iface_index,
236 const struct usb_config *setup)
238 struct usb_endpoint *ep = udev->endpoints;
239 struct usb_endpoint *ep_end = udev->endpoints + udev->endpoints_max;
240 uint8_t index = setup->ep_index;
246 DPRINTFN(10, "udev=%p iface_index=%d address=0x%x "
247 "type=0x%x dir=0x%x index=%d\n",
248 udev, iface_index, setup->endpoint,
249 setup->type, setup->direction, setup->ep_index);
253 if (setup->usb_mode != USB_MODE_DUAL &&
254 udev->flags.usb_mode != setup->usb_mode) {
255 /* wrong mode - no endpoint */
259 /* setup expected endpoint direction mask and value */
261 if (setup->direction == UE_DIR_RX) {
262 ea_mask = (UE_DIR_IN | UE_DIR_OUT);
263 ea_val = (udev->flags.usb_mode == USB_MODE_DEVICE) ?
264 UE_DIR_OUT : UE_DIR_IN;
265 } else if (setup->direction == UE_DIR_TX) {
266 ea_mask = (UE_DIR_IN | UE_DIR_OUT);
267 ea_val = (udev->flags.usb_mode == USB_MODE_DEVICE) ?
268 UE_DIR_IN : UE_DIR_OUT;
269 } else if (setup->direction == UE_DIR_ANY) {
270 /* match any endpoint direction */
274 /* match the given endpoint direction */
275 ea_mask = (UE_DIR_IN | UE_DIR_OUT);
276 ea_val = (setup->direction & (UE_DIR_IN | UE_DIR_OUT));
279 /* setup expected endpoint address */
281 if (setup->endpoint == UE_ADDR_ANY) {
282 /* match any endpoint address */
284 /* match the given endpoint address */
286 ea_val |= (setup->endpoint & UE_ADDR);
289 /* setup expected endpoint type */
291 if (setup->type == UE_BULK_INTR) {
292 /* this will match BULK and INTERRUPT endpoints */
295 } else if (setup->type == UE_TYPE_ANY) {
296 /* match any endpoint type */
300 /* match the given endpoint type */
301 type_mask = UE_XFERTYPE;
302 type_val = (setup->type & UE_XFERTYPE);
306 * Iterate accross all the USB endpoints searching for a match
307 * based on the endpoint address. Note that we are searching
308 * the endpoints from the beginning of the "udev->endpoints" array.
310 for (; ep != ep_end; ep++) {
312 if ((ep->edesc == NULL) ||
313 (ep->iface_index != iface_index)) {
316 /* do the masks and check the values */
318 if (((ep->edesc->bEndpointAddress & ea_mask) == ea_val) &&
319 ((ep->edesc->bmAttributes & type_mask) == type_val)) {
327 * Match against default endpoint last, so that "any endpoint", "any
328 * address" and "any direction" returns the first endpoint of the
329 * interface. "iface_index" and "direction" is ignored:
331 if ((udev->ctrl_ep.edesc != NULL) &&
332 ((udev->ctrl_ep.edesc->bEndpointAddress & ea_mask) == ea_val) &&
333 ((udev->ctrl_ep.edesc->bmAttributes & type_mask) == type_val) &&
344 /*------------------------------------------------------------------------*
345 * usbd_interface_count
347 * This function stores the number of USB interfaces excluding
348 * alternate settings, which the USB config descriptor reports into
349 * the unsigned 8-bit integer pointed to by "count".
354 *------------------------------------------------------------------------*/
356 usbd_interface_count(struct usb_device *udev, uint8_t *count)
358 if (udev->cdesc == NULL) {
360 return (USB_ERR_NOT_CONFIGURED);
362 *count = udev->ifaces_max;
363 return (USB_ERR_NORMAL_COMPLETION);
366 /*------------------------------------------------------------------------*
369 * This function will initialise the USB endpoint structure pointed to by
370 * the "endpoint" argument. The structure pointed to by "endpoint" must be
371 * zeroed before calling this function.
372 *------------------------------------------------------------------------*/
374 usb_init_endpoint(struct usb_device *udev, uint8_t iface_index,
375 struct usb_endpoint_descriptor *edesc,
376 struct usb_endpoint_ss_comp_descriptor *ecomp,
377 struct usb_endpoint *ep)
379 struct usb_bus_methods *methods;
382 methods = udev->bus->methods;
384 (methods->endpoint_init) (udev, edesc, ep);
386 /* initialise USB endpoint structure */
389 ep->iface_index = iface_index;
391 /* setup USB stream queues */
392 for (x = 0; x != USB_MAX_EP_STREAMS; x++) {
393 TAILQ_INIT(&ep->endpoint_q[x].head);
394 ep->endpoint_q[x].command = &usbd_pipe_start;
397 /* the pipe is not supported by the hardware */
398 if (ep->methods == NULL)
401 /* check for SUPER-speed streams mode endpoint */
402 if (udev->speed == USB_SPEED_SUPER && ecomp != NULL &&
403 (edesc->bmAttributes & UE_XFERTYPE) == UE_BULK &&
404 (UE_GET_BULK_STREAMS(ecomp->bmAttributes) != 0)) {
405 usbd_set_endpoint_mode(udev, ep, USB_EP_MODE_STREAMS);
407 usbd_set_endpoint_mode(udev, ep, USB_EP_MODE_DEFAULT);
410 /* clear stall, if any */
411 if (methods->clear_stall != NULL) {
412 USB_BUS_LOCK(udev->bus);
413 (methods->clear_stall) (udev, ep);
414 USB_BUS_UNLOCK(udev->bus);
418 /*-----------------------------------------------------------------------*
419 * usb_endpoint_foreach
421 * This function will iterate all the USB endpoints except the control
422 * endpoint. This function is NULL safe.
425 * NULL: End of USB endpoints
426 * Else: Pointer to next USB endpoint
427 *------------------------------------------------------------------------*/
428 struct usb_endpoint *
429 usb_endpoint_foreach(struct usb_device *udev, struct usb_endpoint *ep)
431 struct usb_endpoint *ep_end;
437 ep_end = udev->endpoints + udev->endpoints_max;
439 /* get next endpoint */
441 ep = udev->endpoints;
445 /* find next allocated ep */
446 while (ep != ep_end) {
447 if (ep->edesc != NULL)
456 usb_get_refcount(struct usb_device *udev)
458 if (usb_proc_is_called_from(USB_BUS_EXPLORE_PROC(udev->bus)) ||
459 usb_proc_is_called_from(USB_BUS_CONTROL_XFER_PROC(udev->bus)))
465 /*------------------------------------------------------------------------*
466 * usb_wait_pending_ref_locked
468 * This function will wait for any USB references to go away before
469 * returning and disable further USB device refcounting on the
470 * specified USB device. This function is used when detaching a USB
472 *------------------------------------------------------------------------*/
474 usb_wait_pending_ref_locked(struct usb_device *udev)
477 const uint16_t refcount = usb_get_refcount(udev);
479 DPRINTF("Refcount = %d\n", (int)refcount);
482 /* wait for any pending references to go away */
483 mtx_lock(&usb_ref_lock);
484 if (udev->refcount == refcount) {
485 /* prevent further refs being taken */
486 udev->refcount = USB_DEV_REF_MAX;
487 mtx_unlock(&usb_ref_lock);
490 usbd_enum_unlock(udev);
491 cv_wait(&udev->ref_cv, &usb_ref_lock);
492 mtx_unlock(&usb_ref_lock);
493 (void) usbd_enum_lock(udev);
498 /*------------------------------------------------------------------------*
499 * usb_ref_restore_locked
501 * This function will restore the reference count value after a call
502 * to "usb_wait_pending_ref_locked()".
503 *------------------------------------------------------------------------*/
505 usb_ref_restore_locked(struct usb_device *udev)
508 const uint16_t refcount = usb_get_refcount(udev);
510 DPRINTF("Refcount = %d\n", (int)refcount);
512 /* restore reference count and wakeup waiters, if any */
513 mtx_lock(&usb_ref_lock);
514 udev->refcount = refcount;
515 cv_broadcast(&udev->ref_cv);
516 mtx_unlock(&usb_ref_lock);
520 /*------------------------------------------------------------------------*
523 * This function will free all USB interfaces and USB endpoints belonging
526 * Flag values, see "USB_UNCFG_FLAG_XXX".
527 *------------------------------------------------------------------------*/
529 usb_unconfigure(struct usb_device *udev, uint8_t flag)
533 /* Prevent re-enumeration */
534 do_unlock = usbd_enum_lock(udev);
536 /* detach all interface drivers */
537 usb_detach_device(udev, USB_IFACE_INDEX_ANY, flag);
540 /* free all FIFOs except control endpoint FIFOs */
541 usb_fifo_free_wrap(udev, USB_IFACE_INDEX_ANY, flag);
544 * Free all cdev's, if any.
549 #if USB_HAVE_COMPAT_LINUX
550 /* free Linux compat device, if any */
551 if (udev->linux_endpoint_start) {
552 usb_linux_free_device(udev);
553 udev->linux_endpoint_start = NULL;
557 usb_config_parse(udev, USB_IFACE_INDEX_ANY, USB_CFG_FREE);
559 /* free "cdesc" after "ifaces" and "endpoints", if any */
560 if (udev->cdesc != NULL) {
561 if (udev->flags.usb_mode != USB_MODE_DEVICE)
562 usbd_free_config_desc(udev, udev->cdesc);
565 /* set unconfigured state */
566 udev->curr_config_no = USB_UNCONFIG_NO;
567 udev->curr_config_index = USB_UNCONFIG_INDEX;
570 usbd_enum_unlock(udev);
573 /*------------------------------------------------------------------------*
574 * usbd_set_config_index
576 * This function selects configuration by index, independent of the
577 * actual configuration number. This function should not be used by
583 *------------------------------------------------------------------------*/
585 usbd_set_config_index(struct usb_device *udev, uint8_t index)
587 struct usb_status ds;
588 struct usb_config_descriptor *cdp;
595 DPRINTFN(6, "udev=%p index=%d\n", udev, index);
597 /* Prevent re-enumeration */
598 do_unlock = usbd_enum_lock(udev);
600 usb_unconfigure(udev, 0);
602 if (index == USB_UNCONFIG_INDEX) {
604 * Leave unallocated when unconfiguring the
605 * device. "usb_unconfigure()" will also reset
606 * the current config number and index.
608 err = usbd_req_set_config(udev, NULL, USB_UNCONFIG_NO);
609 if (udev->state == USB_STATE_CONFIGURED)
610 usb_set_device_state(udev, USB_STATE_ADDRESSED);
613 /* get the full config descriptor */
614 if (udev->flags.usb_mode == USB_MODE_DEVICE) {
615 /* save some memory */
616 err = usbd_req_get_descriptor_ptr(udev, &cdp,
617 (UDESC_CONFIG << 8) | index);
620 err = usbd_req_get_config_desc_full(udev,
626 /* set the new config descriptor */
630 /* Figure out if the device is self or bus powered. */
632 if ((!udev->flags.uq_bus_powered) &&
633 (cdp->bmAttributes & UC_SELF_POWERED) &&
634 (udev->flags.usb_mode == USB_MODE_HOST)) {
635 /* May be self powered. */
636 if (cdp->bmAttributes & UC_BUS_POWERED) {
637 /* Must ask device. */
638 err = usbd_req_get_device_status(udev, NULL, &ds);
640 DPRINTFN(0, "could not read "
641 "device status: %s\n",
643 } else if (UGETW(ds.wStatus) & UDS_SELF_POWERED) {
646 DPRINTF("status=0x%04x \n",
651 DPRINTF("udev=%p cdesc=%p (addr %d) cno=%d attr=0x%02x, "
652 "selfpowered=%d, power=%d\n",
654 udev->address, cdp->bConfigurationValue, cdp->bmAttributes,
655 selfpowered, cdp->bMaxPower * 2);
657 /* Check if we have enough power. */
658 power = cdp->bMaxPower * 2;
660 if (udev->parent_hub) {
661 max_power = udev->parent_hub->hub->portpower;
663 max_power = USB_MAX_POWER;
666 if (power > max_power) {
667 DPRINTFN(0, "power exceeded %d > %d\n", power, max_power);
668 err = USB_ERR_NO_POWER;
671 /* Only update "self_powered" in USB Host Mode */
672 if (udev->flags.usb_mode == USB_MODE_HOST) {
673 udev->flags.self_powered = selfpowered;
676 udev->curr_config_no = cdp->bConfigurationValue;
677 udev->curr_config_index = index;
678 usb_set_device_state(udev, USB_STATE_CONFIGURED);
680 /* Set the actual configuration value. */
681 err = usbd_req_set_config(udev, NULL, cdp->bConfigurationValue);
686 err = usb_config_parse(udev, USB_IFACE_INDEX_ANY, USB_CFG_ALLOC);
691 err = usb_config_parse(udev, USB_IFACE_INDEX_ANY, USB_CFG_INIT);
697 /* create device nodes for each endpoint */
698 usb_cdev_create(udev);
702 DPRINTF("error=%s\n", usbd_errstr(err));
704 usb_unconfigure(udev, 0);
707 usbd_enum_unlock(udev);
711 /*------------------------------------------------------------------------*
714 * This function will allocate and free USB interfaces and USB endpoints,
715 * parse the USB configuration structure and initialise the USB endpoints
716 * and interfaces. If "iface_index" is not equal to
717 * "USB_IFACE_INDEX_ANY" then the "cmd" parameter is the
718 * alternate_setting to be selected for the given interface. Else the
719 * "cmd" parameter is defined by "USB_CFG_XXX". "iface_index" can be
720 * "USB_IFACE_INDEX_ANY" or a valid USB interface index. This function
721 * is typically called when setting the configuration or when setting
722 * an alternate interface.
727 *------------------------------------------------------------------------*/
729 usb_config_parse(struct usb_device *udev, uint8_t iface_index, uint8_t cmd)
731 struct usb_idesc_parse_state ips;
732 struct usb_interface_descriptor *id;
733 struct usb_endpoint_descriptor *ed;
734 struct usb_interface *iface;
735 struct usb_endpoint *ep;
743 if (iface_index != USB_IFACE_INDEX_ANY) {
744 /* parameter overload */
754 DPRINTFN(5, "iface_index=%d cmd=%d\n",
757 if (cmd == USB_CFG_FREE)
760 if (cmd == USB_CFG_INIT) {
761 sx_assert(&udev->enum_sx, SA_LOCKED);
763 /* check for in-use endpoints */
765 ep = udev->endpoints;
766 ep_max = udev->endpoints_max;
768 /* look for matching endpoints */
769 if ((iface_index == USB_IFACE_INDEX_ANY) ||
770 (iface_index == ep->iface_index)) {
771 if (ep->refcount_alloc != 0) {
773 * This typically indicates a
774 * more serious error.
776 err = USB_ERR_IN_USE;
779 memset(ep, 0, sizeof(*ep));
780 /* make sure we don't zero the endpoint again */
781 ep->iface_index = USB_IFACE_INDEX_ANY;
791 memset(&ips, 0, sizeof(ips));
796 while ((id = usb_idesc_foreach(udev->cdesc, &ips))) {
798 iface = udev->ifaces + ips.iface_index;
800 /* check for specific interface match */
802 if (cmd == USB_CFG_INIT) {
803 if ((iface_index != USB_IFACE_INDEX_ANY) &&
804 (iface_index != ips.iface_index)) {
805 /* wrong interface */
807 } else if (alt_index != ips.iface_index_alt) {
808 /* wrong alternate setting */
811 /* initialise interface */
817 /* check for new interface */
818 if (ips.iface_index_alt == 0) {
819 /* update current number of endpoints */
824 /* setup the USB interface structure */
826 /* set alternate index */
827 iface->alt_index = alt_index;
828 /* set default interface parent */
829 if (iface_index == USB_IFACE_INDEX_ANY) {
830 iface->parent_iface_index =
835 DPRINTFN(5, "found idesc nendpt=%d\n", id->bNumEndpoints);
837 ed = (struct usb_endpoint_descriptor *)id;
841 /* iterate all the endpoint descriptors */
842 while ((ed = usb_edesc_foreach(udev->cdesc, ed))) {
844 /* check if endpoint limit has been reached */
845 if (temp >= USB_MAX_EP_UNITS) {
846 DPRINTF("Endpoint limit reached\n");
850 ep = udev->endpoints + temp;
855 ecomp = usb_ed_comp_foreach(udev->cdesc, (void *)ed);
857 DPRINTFN(5, "Found endpoint companion descriptor\n");
859 usb_init_endpoint(udev,
860 ips.iface_index, ed, ecomp, ep);
865 /* find maximum number of endpoints */
871 /* NOTE: It is valid to have no interfaces and no endpoints! */
873 if (cmd == USB_CFG_ALLOC) {
874 udev->ifaces_max = ips.iface_index;
875 #if (USB_HAVE_FIXED_IFACE == 0)
877 if (udev->ifaces_max != 0) {
878 udev->ifaces = malloc(sizeof(*iface) * udev->ifaces_max,
879 M_USB, M_WAITOK | M_ZERO);
880 if (udev->ifaces == NULL) {
886 #if (USB_HAVE_FIXED_ENDPOINT == 0)
888 udev->endpoints = malloc(sizeof(*ep) * ep_max,
889 M_USB, M_WAITOK | M_ZERO);
890 if (udev->endpoints == NULL) {
895 udev->endpoints = NULL;
898 USB_BUS_LOCK(udev->bus);
899 udev->endpoints_max = ep_max;
900 /* reset any ongoing clear-stall */
901 udev->ep_curr = NULL;
902 USB_BUS_UNLOCK(udev->bus);
904 #if (USB_HAVE_FIXED_IFACE == 0) || (USB_HAVE_FIXED_ENDPOINT == 0)
908 if (cmd == USB_CFG_ALLOC) {
910 USB_BUS_LOCK(udev->bus);
911 udev->endpoints_max = 0;
912 /* reset any ongoing clear-stall */
913 udev->ep_curr = NULL;
914 USB_BUS_UNLOCK(udev->bus);
916 #if (USB_HAVE_FIXED_IFACE == 0)
917 free(udev->ifaces, M_USB);
920 #if (USB_HAVE_FIXED_ENDPOINT == 0)
921 free(udev->endpoints, M_USB);
922 udev->endpoints = NULL;
924 udev->ifaces_max = 0;
930 /*------------------------------------------------------------------------*
931 * usbd_set_alt_interface_index
933 * This function will select an alternate interface index for the
934 * given interface index. The interface should not be in use when this
935 * function is called. That means there should not be any open USB
936 * transfers. Else an error is returned. If the alternate setting is
937 * already set this function will simply return success. This function
938 * is called in Host mode and Device mode!
943 *------------------------------------------------------------------------*/
945 usbd_set_alt_interface_index(struct usb_device *udev,
946 uint8_t iface_index, uint8_t alt_index)
948 struct usb_interface *iface = usbd_get_iface(udev, iface_index);
952 /* Prevent re-enumeration */
953 do_unlock = usbd_enum_lock(udev);
959 if (iface->alt_index == alt_index) {
961 * Optimise away duplicate setting of
962 * alternate setting in USB Host Mode!
969 * Free all generic FIFOs for this interface, except control
972 usb_fifo_free_wrap(udev, iface_index, 0);
975 err = usb_config_parse(udev, iface_index, alt_index);
979 if (iface->alt_index != alt_index) {
980 /* the alternate setting does not exist */
985 err = usbd_req_set_alt_interface_no(udev, NULL, iface_index,
986 iface->idesc->bAlternateSetting);
990 usbd_enum_unlock(udev);
994 /*------------------------------------------------------------------------*
995 * usbd_set_endpoint_stall
997 * This function is used to make a BULK or INTERRUPT endpoint send
998 * STALL tokens in USB device mode.
1003 *------------------------------------------------------------------------*/
1005 usbd_set_endpoint_stall(struct usb_device *udev, struct usb_endpoint *ep,
1008 struct usb_xfer *xfer;
1011 uint8_t was_stalled;
1015 DPRINTF("Cannot find endpoint\n");
1017 * Pretend that the clear or set stall request is
1018 * successful else some USB host stacks can do
1019 * strange things, especially when a control endpoint
1024 et = (ep->edesc->bmAttributes & UE_XFERTYPE);
1026 if ((et != UE_BULK) &&
1027 (et != UE_INTERRUPT)) {
1029 * Should not stall control
1030 * nor isochronous endpoints.
1032 DPRINTF("Invalid endpoint\n");
1035 USB_BUS_LOCK(udev->bus);
1037 /* store current stall state */
1038 was_stalled = ep->is_stalled;
1040 /* check for no change */
1041 if (was_stalled && do_stall) {
1042 /* if the endpoint is already stalled do nothing */
1043 USB_BUS_UNLOCK(udev->bus);
1044 DPRINTF("No change\n");
1047 /* set stalled state */
1050 if (do_stall || (!was_stalled)) {
1052 for (x = 0; x != USB_MAX_EP_STREAMS; x++) {
1053 /* lookup the current USB transfer, if any */
1054 xfer = ep->endpoint_q[x].curr;
1057 * The "xfer_stall" method
1058 * will complete the USB
1059 * transfer like in case of a
1060 * timeout setting the error
1061 * code "USB_ERR_STALLED".
1063 (udev->bus->methods->xfer_stall) (xfer);
1067 (udev->bus->methods->set_stall) (udev, ep, &do_stall);
1070 ep->toggle_next = 0; /* reset data toggle */
1071 ep->is_stalled = 0; /* clear stalled state */
1073 (udev->bus->methods->clear_stall) (udev, ep);
1075 /* start the current or next transfer, if any */
1076 for (x = 0; x != USB_MAX_EP_STREAMS; x++) {
1077 usb_command_wrapper(&ep->endpoint_q[x],
1078 ep->endpoint_q[x].curr);
1081 USB_BUS_UNLOCK(udev->bus);
1085 /*------------------------------------------------------------------------*
1086 * usb_reset_iface_endpoints - used in USB device side mode
1087 *------------------------------------------------------------------------*/
1089 usb_reset_iface_endpoints(struct usb_device *udev, uint8_t iface_index)
1091 struct usb_endpoint *ep;
1092 struct usb_endpoint *ep_end;
1094 ep = udev->endpoints;
1095 ep_end = udev->endpoints + udev->endpoints_max;
1097 for (; ep != ep_end; ep++) {
1099 if ((ep->edesc == NULL) ||
1100 (ep->iface_index != iface_index)) {
1103 /* simulate a clear stall from the peer */
1104 usbd_set_endpoint_stall(udev, ep, 0);
1109 /*------------------------------------------------------------------------*
1110 * usb_detach_device_sub
1112 * This function will try to detach an USB device. If it fails a panic
1115 * Flag values, see "USB_UNCFG_FLAG_XXX".
1116 *------------------------------------------------------------------------*/
1118 usb_detach_device_sub(struct usb_device *udev, device_t *ppdev,
1119 char **ppnpinfo, uint8_t flag)
1128 * NOTE: It is important to clear "*ppdev" before deleting
1129 * the child due to some device methods being called late
1130 * during the delete process !
1135 device_printf(dev, "at %s, port %d, addr %d "
1137 device_get_nameunit(udev->parent_dev),
1138 udev->port_no, udev->address);
1141 if (device_is_attached(dev)) {
1142 if (udev->flags.peer_suspended) {
1143 err = DEVICE_RESUME(dev);
1145 device_printf(dev, "Resume failed\n");
1148 if (device_detach(dev)) {
1152 if (device_delete_child(udev->parent_dev, dev)) {
1157 pnpinfo = *ppnpinfo;
1158 if (pnpinfo != NULL) {
1160 free(pnpinfo, M_USBDEV);
1165 /* Detach is not allowed to fail in the USB world */
1166 panic("usb_detach_device_sub: A USB driver would not detach\n");
1169 /*------------------------------------------------------------------------*
1172 * The following function will detach the matching interfaces.
1173 * This function is NULL safe.
1175 * Flag values, see "USB_UNCFG_FLAG_XXX".
1176 *------------------------------------------------------------------------*/
1178 usb_detach_device(struct usb_device *udev, uint8_t iface_index,
1181 struct usb_interface *iface;
1188 DPRINTFN(4, "udev=%p\n", udev);
1190 sx_assert(&udev->enum_sx, SA_LOCKED);
1192 /* wait for pending refs to go away */
1193 usb_wait_pending_ref_locked(udev);
1196 * First detach the child to give the child's detach routine a
1197 * chance to detach the sub-devices in the correct order.
1198 * Then delete the child using "device_delete_child()" which
1199 * will detach all sub-devices from the bottom and upwards!
1201 if (iface_index != USB_IFACE_INDEX_ANY) {
1203 iface_index = i + 1;
1206 iface_index = USB_IFACE_MAX;
1211 for (; i != iface_index; i++) {
1213 iface = usbd_get_iface(udev, i);
1214 if (iface == NULL) {
1215 /* looks like the end of the USB interfaces */
1218 usb_detach_device_sub(udev, &iface->subdev,
1219 &iface->pnpinfo, flag);
1222 usb_ref_restore_locked(udev);
1225 /*------------------------------------------------------------------------*
1226 * usb_probe_and_attach_sub
1231 *------------------------------------------------------------------------*/
1233 usb_probe_and_attach_sub(struct usb_device *udev,
1234 struct usb_attach_arg *uaa)
1236 struct usb_interface *iface;
1241 if (iface->parent_iface_index != USB_IFACE_INDEX_ANY) {
1242 /* leave interface alone */
1245 dev = iface->subdev;
1248 /* clean up after module unload */
1250 if (device_is_attached(dev)) {
1251 /* already a device there */
1254 /* clear "iface->subdev" as early as possible */
1256 iface->subdev = NULL;
1258 if (device_delete_child(udev->parent_dev, dev)) {
1261 * Panic here, else one can get a double call
1262 * to device_detach(). USB devices should
1263 * never fail on detach!
1265 panic("device_delete_child() failed\n");
1268 if (uaa->temp_dev == NULL) {
1270 /* create a new child */
1271 uaa->temp_dev = device_add_child(udev->parent_dev, NULL, -1);
1272 if (uaa->temp_dev == NULL) {
1273 device_printf(udev->parent_dev,
1274 "Device creation failed\n");
1275 return (1); /* failure */
1277 device_set_ivars(uaa->temp_dev, uaa);
1278 device_quiet(uaa->temp_dev);
1281 * Set "subdev" before probe and attach so that "devd" gets
1282 * the information it needs.
1284 iface->subdev = uaa->temp_dev;
1286 if (device_probe_and_attach(iface->subdev) == 0) {
1288 * The USB attach arguments are only available during probe
1291 uaa->temp_dev = NULL;
1292 device_set_ivars(iface->subdev, NULL);
1294 if (udev->flags.peer_suspended) {
1295 err = DEVICE_SUSPEND(iface->subdev);
1297 device_printf(iface->subdev, "Suspend failed\n");
1299 return (0); /* success */
1301 /* No USB driver found */
1302 iface->subdev = NULL;
1304 return (1); /* failure */
1307 /*------------------------------------------------------------------------*
1308 * usbd_set_parent_iface
1310 * Using this function will lock the alternate interface setting on an
1311 * interface. It is typically used for multi interface drivers. In USB
1312 * device side mode it is assumed that the alternate interfaces all
1313 * have the same endpoint descriptors. The default parent index value
1314 * is "USB_IFACE_INDEX_ANY". Then the alternate setting value is not
1316 *------------------------------------------------------------------------*/
1318 usbd_set_parent_iface(struct usb_device *udev, uint8_t iface_index,
1319 uint8_t parent_index)
1321 struct usb_interface *iface;
1327 iface = usbd_get_iface(udev, iface_index);
1329 iface->parent_iface_index = parent_index;
1333 usb_init_attach_arg(struct usb_device *udev,
1334 struct usb_attach_arg *uaa)
1336 memset(uaa, 0, sizeof(*uaa));
1339 uaa->usb_mode = udev->flags.usb_mode;
1340 uaa->port = udev->port_no;
1341 uaa->dev_state = UAA_DEV_READY;
1343 uaa->info.idVendor = UGETW(udev->ddesc.idVendor);
1344 uaa->info.idProduct = UGETW(udev->ddesc.idProduct);
1345 uaa->info.bcdDevice = UGETW(udev->ddesc.bcdDevice);
1346 uaa->info.bDeviceClass = udev->ddesc.bDeviceClass;
1347 uaa->info.bDeviceSubClass = udev->ddesc.bDeviceSubClass;
1348 uaa->info.bDeviceProtocol = udev->ddesc.bDeviceProtocol;
1349 uaa->info.bConfigIndex = udev->curr_config_index;
1350 uaa->info.bConfigNum = udev->curr_config_no;
1353 /*------------------------------------------------------------------------*
1354 * usb_probe_and_attach
1356 * This function is called from "uhub_explore_sub()",
1357 * "usb_handle_set_config()" and "usb_handle_request()".
1361 * Else: A control transfer failed
1362 *------------------------------------------------------------------------*/
1364 usb_probe_and_attach(struct usb_device *udev, uint8_t iface_index)
1366 struct usb_attach_arg uaa;
1367 struct usb_interface *iface;
1373 DPRINTF("udev == NULL\n");
1374 return (USB_ERR_INVAL);
1376 /* Prevent re-enumeration */
1377 do_unlock = usbd_enum_lock(udev);
1379 if (udev->curr_config_index == USB_UNCONFIG_INDEX) {
1380 /* do nothing - no configuration has been set */
1383 /* setup USB attach arguments */
1385 usb_init_attach_arg(udev, &uaa);
1388 * If the whole USB device is targeted, invoke the USB event
1391 if (iface_index == USB_IFACE_INDEX_ANY) {
1393 EVENTHANDLER_INVOKE(usb_dev_configured, udev, &uaa);
1395 if (uaa.dev_state != UAA_DEV_READY) {
1396 /* leave device unconfigured */
1397 usb_unconfigure(udev, 0);
1402 /* Check if only one interface should be probed: */
1403 if (iface_index != USB_IFACE_INDEX_ANY) {
1411 /* Do the probe and attach */
1412 for (; i != j; i++) {
1414 iface = usbd_get_iface(udev, i);
1415 if (iface == NULL) {
1417 * Looks like the end of the USB
1420 DPRINTFN(2, "end of interfaces "
1424 if (iface->idesc == NULL) {
1425 /* no interface descriptor */
1430 uaa.info.bInterfaceClass =
1431 iface->idesc->bInterfaceClass;
1432 uaa.info.bInterfaceSubClass =
1433 iface->idesc->bInterfaceSubClass;
1434 uaa.info.bInterfaceProtocol =
1435 iface->idesc->bInterfaceProtocol;
1436 uaa.info.bIfaceIndex = i;
1437 uaa.info.bIfaceNum =
1438 iface->idesc->bInterfaceNumber;
1439 uaa.driver_info = 0; /* reset driver_info */
1441 DPRINTFN(2, "iclass=%u/%u/%u iindex=%u/%u\n",
1442 uaa.info.bInterfaceClass,
1443 uaa.info.bInterfaceSubClass,
1444 uaa.info.bInterfaceProtocol,
1445 uaa.info.bIfaceIndex,
1446 uaa.info.bIfaceNum);
1448 usb_probe_and_attach_sub(udev, &uaa);
1451 * Remove the leftover child, if any, to enforce that
1452 * a new nomatch devd event is generated for the next
1453 * interface if no driver is found:
1455 if (uaa.temp_dev == NULL)
1457 if (device_delete_child(udev->parent_dev, uaa.temp_dev))
1458 DPRINTFN(0, "device delete child failed\n");
1459 uaa.temp_dev = NULL;
1463 usbd_enum_unlock(udev);
1467 /*------------------------------------------------------------------------*
1468 * usb_suspend_resume_sub
1470 * This function is called when the suspend or resume methods should
1471 * be executed on an USB device.
1472 *------------------------------------------------------------------------*/
1474 usb_suspend_resume_sub(struct usb_device *udev, device_t dev, uint8_t do_suspend)
1481 if (!device_is_attached(dev)) {
1485 err = DEVICE_SUSPEND(dev);
1487 err = DEVICE_RESUME(dev);
1490 device_printf(dev, "%s failed\n",
1491 do_suspend ? "Suspend" : "Resume");
1495 /*------------------------------------------------------------------------*
1496 * usb_suspend_resume
1498 * The following function will suspend or resume the USB device.
1503 *------------------------------------------------------------------------*/
1505 usb_suspend_resume(struct usb_device *udev, uint8_t do_suspend)
1507 struct usb_interface *iface;
1514 DPRINTFN(4, "udev=%p do_suspend=%d\n", udev, do_suspend);
1516 sx_assert(&udev->sr_sx, SA_LOCKED);
1518 USB_BUS_LOCK(udev->bus);
1519 /* filter the suspend events */
1520 if (udev->flags.peer_suspended == do_suspend) {
1521 USB_BUS_UNLOCK(udev->bus);
1525 udev->flags.peer_suspended = do_suspend;
1526 USB_BUS_UNLOCK(udev->bus);
1528 /* do the suspend or resume */
1530 for (i = 0; i != USB_IFACE_MAX; i++) {
1532 iface = usbd_get_iface(udev, i);
1533 if (iface == NULL) {
1534 /* looks like the end of the USB interfaces */
1537 usb_suspend_resume_sub(udev, iface->subdev, do_suspend);
1542 /*------------------------------------------------------------------------*
1543 * usbd_clear_stall_proc
1545 * This function performs generic USB clear stall operations.
1546 *------------------------------------------------------------------------*/
1548 usbd_clear_stall_proc(struct usb_proc_msg *_pm)
1550 struct usb_udev_msg *pm = (void *)_pm;
1551 struct usb_device *udev = pm->udev;
1554 USB_BUS_UNLOCK(udev->bus);
1555 mtx_lock(&udev->device_mtx);
1557 /* Start clear stall callback */
1558 usbd_transfer_start(udev->ctrl_xfer[1]);
1561 mtx_unlock(&udev->device_mtx);
1562 USB_BUS_LOCK(udev->bus);
1565 /*------------------------------------------------------------------------*
1568 * This function allocates a new USB device. This function is called
1569 * when a new device has been put in the powered state, but not yet in
1570 * the addressed state. Get initial descriptor, set the address, get
1571 * full descriptor and get strings.
1576 *------------------------------------------------------------------------*/
1578 usb_alloc_device(device_t parent_dev, struct usb_bus *bus,
1579 struct usb_device *parent_hub, uint8_t depth, uint8_t port_index,
1580 uint8_t port_no, enum usb_dev_speed speed, enum usb_hc_mode mode)
1582 struct usb_attach_arg uaa;
1583 struct usb_device *udev;
1584 struct usb_device *adev;
1585 struct usb_device *hub;
1586 uint8_t *scratch_ptr;
1588 uint8_t device_index;
1589 uint8_t config_index;
1590 uint8_t config_quirk;
1591 uint8_t set_config_failed;
1594 DPRINTF("parent_dev=%p, bus=%p, parent_hub=%p, depth=%u, "
1595 "port_index=%u, port_no=%u, speed=%u, usb_mode=%u\n",
1596 parent_dev, bus, parent_hub, depth, port_index, port_no,
1600 * Find an unused device index. In USB Host mode this is the
1601 * same as the device address.
1603 * Device index zero is not used and device index 1 should
1604 * always be the root hub.
1606 for (device_index = USB_ROOT_HUB_ADDR;
1607 (device_index != bus->devices_max) &&
1608 (bus->devices[device_index] != NULL);
1609 device_index++) /* nop */;
1611 if (device_index == bus->devices_max) {
1612 device_printf(bus->bdev,
1613 "No free USB device index for new device\n");
1618 device_printf(bus->bdev,
1619 "Invalid device depth\n");
1622 udev = malloc(sizeof(*udev), M_USB, M_WAITOK | M_ZERO);
1626 /* initialise our SX-lock */
1627 sx_init_flags(&udev->enum_sx, "USB config SX lock", SX_DUPOK);
1628 sx_init_flags(&udev->sr_sx, "USB suspend and resume SX lock", SX_NOWITNESS);
1630 cv_init(&udev->ctrlreq_cv, "WCTRL");
1631 cv_init(&udev->ref_cv, "UGONE");
1633 /* initialise our mutex */
1634 mtx_init(&udev->device_mtx, "USB device mutex", NULL, MTX_DEF);
1636 /* initialise generic clear stall */
1637 udev->cs_msg[0].hdr.pm_callback = &usbd_clear_stall_proc;
1638 udev->cs_msg[0].udev = udev;
1639 udev->cs_msg[1].hdr.pm_callback = &usbd_clear_stall_proc;
1640 udev->cs_msg[1].udev = udev;
1642 /* initialise some USB device fields */
1643 udev->parent_hub = parent_hub;
1644 udev->parent_dev = parent_dev;
1645 udev->port_index = port_index;
1646 udev->port_no = port_no;
1647 udev->depth = depth;
1649 udev->address = USB_START_ADDR; /* default value */
1650 udev->plugtime = (usb_ticks_t)ticks;
1652 * We need to force the power mode to "on" because there are plenty
1653 * of USB devices out there that do not work very well with
1654 * automatic suspend and resume!
1656 udev->power_mode = usbd_filter_power_mode(udev, USB_POWER_MODE_ON);
1657 udev->pwr_save.last_xfer_time = ticks;
1658 /* we are not ready yet */
1661 /* set up default endpoint descriptor */
1662 udev->ctrl_ep_desc.bLength = sizeof(udev->ctrl_ep_desc);
1663 udev->ctrl_ep_desc.bDescriptorType = UDESC_ENDPOINT;
1664 udev->ctrl_ep_desc.bEndpointAddress = USB_CONTROL_ENDPOINT;
1665 udev->ctrl_ep_desc.bmAttributes = UE_CONTROL;
1666 udev->ctrl_ep_desc.wMaxPacketSize[0] = USB_MAX_IPACKET;
1667 udev->ctrl_ep_desc.wMaxPacketSize[1] = 0;
1668 udev->ctrl_ep_desc.bInterval = 0;
1670 /* set up default endpoint companion descriptor */
1671 udev->ctrl_ep_comp_desc.bLength = sizeof(udev->ctrl_ep_comp_desc);
1672 udev->ctrl_ep_comp_desc.bDescriptorType = UDESC_ENDPOINT_SS_COMP;
1674 udev->ddesc.bMaxPacketSize = USB_MAX_IPACKET;
1676 udev->speed = speed;
1677 udev->flags.usb_mode = mode;
1679 /* search for our High Speed USB HUB, if any */
1682 hub = udev->parent_hub;
1685 if (hub->speed == USB_SPEED_HIGH) {
1686 udev->hs_hub_addr = hub->address;
1687 udev->parent_hs_hub = hub;
1688 udev->hs_port_no = adev->port_no;
1692 hub = hub->parent_hub;
1695 /* init the default endpoint */
1696 usb_init_endpoint(udev, 0,
1697 &udev->ctrl_ep_desc,
1698 &udev->ctrl_ep_comp_desc,
1701 /* set device index */
1702 udev->device_index = device_index;
1705 /* Create ugen name */
1706 snprintf(udev->ugen_name, sizeof(udev->ugen_name),
1707 USB_GENERIC_NAME "%u.%u", device_get_unit(bus->bdev),
1709 LIST_INIT(&udev->pd_list);
1711 /* Create the control endpoint device */
1712 udev->ctrl_dev = usb_make_dev(udev, NULL, 0, 0,
1713 FREAD|FWRITE, UID_ROOT, GID_OPERATOR, 0600);
1715 /* Create a link from /dev/ugenX.X to the default endpoint */
1716 if (udev->ctrl_dev != NULL)
1717 make_dev_alias(udev->ctrl_dev->cdev, "%s", udev->ugen_name);
1719 /* Initialise device */
1720 if (bus->methods->device_init != NULL) {
1721 err = (bus->methods->device_init) (udev);
1723 DPRINTFN(0, "device init %d failed "
1724 "(%s, ignored)\n", device_index,
1729 /* set powered device state after device init is complete */
1730 usb_set_device_state(udev, USB_STATE_POWERED);
1732 if (udev->flags.usb_mode == USB_MODE_HOST) {
1734 err = usbd_req_set_address(udev, NULL, device_index);
1737 * This is the new USB device address from now on, if
1738 * the set address request didn't set it already.
1740 if (udev->address == USB_START_ADDR)
1741 udev->address = device_index;
1744 * We ignore any set-address errors, hence there are
1745 * buggy USB devices out there that actually receive
1746 * the SETUP PID, but manage to set the address before
1747 * the STATUS stage is ACK'ed. If the device responds
1748 * to the subsequent get-descriptor at the new
1749 * address, then we know that the set-address command
1753 DPRINTFN(0, "set address %d failed "
1754 "(%s, ignored)\n", udev->address,
1758 /* We are not self powered */
1759 udev->flags.self_powered = 0;
1761 /* Set unconfigured state */
1762 udev->curr_config_no = USB_UNCONFIG_NO;
1763 udev->curr_config_index = USB_UNCONFIG_INDEX;
1765 /* Setup USB descriptors */
1766 err = (usb_temp_setup_by_index_p) (udev, usb_template);
1768 DPRINTFN(0, "setting up USB template failed maybe the USB "
1769 "template module has not been loaded\n");
1773 usb_set_device_state(udev, USB_STATE_ADDRESSED);
1775 /* setup the device descriptor and the initial "wMaxPacketSize" */
1776 err = usbd_setup_device_desc(udev, NULL);
1779 /* try to enumerate two more times */
1780 err = usbd_req_re_enumerate(udev, NULL);
1782 err = usbd_req_re_enumerate(udev, NULL);
1790 * Setup temporary USB attach args so that we can figure out some
1791 * basic quirks for this device.
1793 usb_init_attach_arg(udev, &uaa);
1795 if (usb_test_quirk(&uaa, UQ_BUS_POWERED)) {
1796 udev->flags.uq_bus_powered = 1;
1798 if (usb_test_quirk(&uaa, UQ_NO_STRINGS)) {
1799 udev->flags.no_strings = 1;
1802 * Workaround for buggy USB devices.
1804 * It appears that some string-less USB chips will crash and
1805 * disappear if any attempts are made to read any string
1808 * Try to detect such chips by checking the strings in the USB
1809 * device descriptor. If no strings are present there we
1810 * simply disable all USB strings.
1813 /* Protect scratch area */
1814 do_unlock = usbd_enum_lock(udev);
1816 scratch_ptr = udev->scratch.data;
1818 if (udev->ddesc.iManufacturer ||
1819 udev->ddesc.iProduct ||
1820 udev->ddesc.iSerialNumber) {
1821 /* read out the language ID string */
1822 err = usbd_req_get_string_desc(udev, NULL,
1823 (char *)scratch_ptr, 4, 0, USB_LANGUAGE_TABLE);
1825 err = USB_ERR_INVAL;
1828 if (err || (scratch_ptr[0] < 4)) {
1829 udev->flags.no_strings = 1;
1836 /* load preferred value and mask */
1838 mask = usb_lang_mask;
1840 /* align length correctly */
1841 scratch_ptr[0] &= ~1U;
1843 /* fix compiler warning */
1846 /* search for preferred language */
1847 for (x = 2; (x < scratch_ptr[0]); x += 2) {
1848 langid = UGETW(scratch_ptr + x);
1849 if ((langid & mask) == pref)
1852 if (x >= scratch_ptr[0]) {
1853 /* pick the first language as the default */
1854 DPRINTFN(1, "Using first language\n");
1855 langid = UGETW(scratch_ptr + 2);
1858 DPRINTFN(1, "Language selected: 0x%04x\n", langid);
1859 udev->langid = langid;
1863 usbd_enum_unlock(udev);
1865 /* assume 100mA bus powered for now. Changed when configured. */
1866 udev->power = USB_MIN_POWER;
1867 /* fetch the vendor and product strings from the device */
1868 usbd_set_device_strings(udev);
1870 if (udev->flags.usb_mode == USB_MODE_DEVICE) {
1871 /* USB device mode setup is complete */
1877 * Most USB devices should attach to config index 0 by
1880 if (usb_test_quirk(&uaa, UQ_CFG_INDEX_0)) {
1883 } else if (usb_test_quirk(&uaa, UQ_CFG_INDEX_1)) {
1886 } else if (usb_test_quirk(&uaa, UQ_CFG_INDEX_2)) {
1889 } else if (usb_test_quirk(&uaa, UQ_CFG_INDEX_3)) {
1892 } else if (usb_test_quirk(&uaa, UQ_CFG_INDEX_4)) {
1900 set_config_failed = 0;
1903 DPRINTF("setting config %u\n", config_index);
1905 /* get the USB device configured */
1906 err = usbd_set_config_index(udev, config_index);
1908 if (udev->ddesc.bNumConfigurations != 0) {
1909 if (!set_config_failed) {
1910 set_config_failed = 1;
1911 /* XXX try to re-enumerate the device */
1912 err = usbd_req_re_enumerate(udev, NULL);
1914 goto repeat_set_config;
1916 DPRINTFN(0, "Failure selecting configuration index %u:"
1917 "%s, port %u, addr %u (ignored)\n",
1918 config_index, usbd_errstr(err), udev->port_no,
1922 * Some USB devices do not have any configurations. Ignore any
1923 * set config failures!
1928 if (!config_quirk && config_index + 1 < udev->ddesc.bNumConfigurations) {
1929 if ((udev->cdesc->bNumInterface < 2) &&
1930 usbd_get_no_descriptors(udev->cdesc, UDESC_ENDPOINT) == 0) {
1931 DPRINTFN(0, "Found no endpoints, trying next config\n");
1933 goto repeat_set_config;
1935 #if USB_HAVE_MSCTEST
1936 if (config_index == 0) {
1938 * Try to figure out if we have an
1939 * auto-install disk there:
1941 if (usb_iface_is_cdrom(udev, 0)) {
1942 DPRINTFN(0, "Found possible auto-install "
1943 "disk (trying next config)\n");
1945 goto repeat_set_config;
1950 #if USB_HAVE_MSCTEST
1951 if (set_config_failed == 0 && config_index == 0 &&
1952 usb_test_quirk(&uaa, UQ_MSC_NO_SYNC_CACHE) == 0 &&
1953 usb_test_quirk(&uaa, UQ_MSC_NO_GETMAXLUN) == 0) {
1956 * Try to figure out if there are any MSC quirks we
1957 * should apply automatically:
1959 err = usb_msc_auto_quirk(udev, 0);
1962 set_config_failed = 1;
1963 goto repeat_set_config;
1969 DPRINTF("new dev (addr %d), udev=%p, parent_hub=%p\n",
1970 udev->address, udev, udev->parent_hub);
1972 /* register our device - we are ready */
1973 usb_bus_port_set_device(bus, parent_hub ?
1974 parent_hub->hub->ports + port_index : NULL, udev, device_index);
1977 /* Symlink the ugen device name */
1978 udev->ugen_symlink = usb_alloc_symlink(udev->ugen_name);
1980 /* Announce device */
1981 printf("%s: <%s> at %s\n", udev->ugen_name,
1982 usb_get_manufacturer(udev),
1983 device_get_nameunit(udev->bus->bdev));
1987 usb_notify_addq("ATTACH", udev);
1992 * Free USB device and all subdevices, if any.
1994 usb_free_device(udev, 0);
2001 struct usb_fs_privdata *
2002 usb_make_dev(struct usb_device *udev, const char *devname, int ep,
2003 int fi, int rwmode, uid_t uid, gid_t gid, int mode)
2005 struct usb_fs_privdata* pd;
2008 /* Store information to locate ourselves again later */
2009 pd = malloc(sizeof(struct usb_fs_privdata), M_USBDEV,
2011 pd->bus_index = device_get_unit(udev->bus->bdev);
2012 pd->dev_index = udev->device_index;
2014 pd->fifo_index = fi;
2017 /* Now, create the device itself */
2018 if (devname == NULL) {
2020 snprintf(buffer, sizeof(buffer), USB_DEVICE_DIR "/%u.%u.%u",
2021 pd->bus_index, pd->dev_index, pd->ep_addr);
2024 pd->cdev = make_dev(&usb_devsw, 0, uid, gid, mode, "%s", devname);
2026 if (pd->cdev == NULL) {
2027 DPRINTFN(0, "Failed to create device %s\n", devname);
2032 /* XXX setting si_drv1 and creating the device is not atomic! */
2033 pd->cdev->si_drv1 = pd;
2039 usb_destroy_dev(struct usb_fs_privdata *pd)
2044 destroy_dev(pd->cdev);
2050 usb_cdev_create(struct usb_device *udev)
2052 struct usb_config_descriptor *cd;
2053 struct usb_endpoint_descriptor *ed;
2054 struct usb_descriptor *desc;
2055 struct usb_fs_privdata* pd;
2056 int inmode, outmode, inmask, outmask, mode;
2059 KASSERT(LIST_FIRST(&udev->pd_list) == NULL, ("stale cdev entries"));
2061 DPRINTFN(2, "Creating device nodes\n");
2063 if (usbd_get_mode(udev) == USB_MODE_DEVICE) {
2066 } else { /* USB_MODE_HOST */
2076 * Collect all used endpoint numbers instead of just
2077 * generating 16 static endpoints.
2079 cd = usbd_get_config_descriptor(udev);
2080 while ((desc = usb_desc_foreach(cd, desc))) {
2081 /* filter out all endpoint descriptors */
2082 if ((desc->bDescriptorType == UDESC_ENDPOINT) &&
2083 (desc->bLength >= sizeof(*ed))) {
2084 ed = (struct usb_endpoint_descriptor *)desc;
2087 ep = ed->bEndpointAddress;
2088 if (UE_GET_DIR(ep) == UE_DIR_OUT)
2089 outmask |= 1 << UE_GET_ADDR(ep);
2091 inmask |= 1 << UE_GET_ADDR(ep);
2095 /* Create all available endpoints except EP0 */
2096 for (ep = 1; ep < 16; ep++) {
2097 mode = (inmask & (1 << ep)) ? inmode : 0;
2098 mode |= (outmask & (1 << ep)) ? outmode : 0;
2100 continue; /* no IN or OUT endpoint */
2102 pd = usb_make_dev(udev, NULL, ep, 0,
2103 mode, UID_ROOT, GID_OPERATOR, 0600);
2106 LIST_INSERT_HEAD(&udev->pd_list, pd, pd_next);
2111 usb_cdev_free(struct usb_device *udev)
2113 struct usb_fs_privdata* pd;
2115 DPRINTFN(2, "Freeing device nodes\n");
2117 while ((pd = LIST_FIRST(&udev->pd_list)) != NULL) {
2118 KASSERT(pd->cdev->si_drv1 == pd, ("privdata corrupt"));
2120 LIST_REMOVE(pd, pd_next);
2122 usb_destroy_dev(pd);
2127 /*------------------------------------------------------------------------*
2130 * This function is NULL safe and will free an USB device and its
2131 * children devices, if any.
2133 * Flag values: Reserved, set to zero.
2134 *------------------------------------------------------------------------*/
2136 usb_free_device(struct usb_device *udev, uint8_t flag)
2138 struct usb_bus *bus;
2141 return; /* already freed */
2143 DPRINTFN(4, "udev=%p port=%d\n", udev, udev->port_no);
2147 /* set DETACHED state to prevent any further references */
2148 usb_set_device_state(udev, USB_STATE_DETACHED);
2151 usb_notify_addq("DETACH", udev);
2156 printf("%s: <%s> at %s (disconnected)\n", udev->ugen_name,
2157 usb_get_manufacturer(udev), device_get_nameunit(bus->bdev));
2160 /* Destroy UGEN symlink, if any */
2161 if (udev->ugen_symlink) {
2162 usb_free_symlink(udev->ugen_symlink);
2163 udev->ugen_symlink = NULL;
2166 usb_destroy_dev(udev->ctrl_dev);
2169 if (udev->flags.usb_mode == USB_MODE_DEVICE) {
2170 /* stop receiving any control transfers (Device Side Mode) */
2171 usbd_transfer_unsetup(udev->ctrl_xfer, USB_CTRL_XFER_MAX);
2174 /* the following will get the device unconfigured in software */
2175 usb_unconfigure(udev, USB_UNCFG_FLAG_FREE_EP0);
2177 /* final device unregister after all character devices are closed */
2178 usb_bus_port_set_device(bus, udev->parent_hub ?
2179 udev->parent_hub->hub->ports + udev->port_index : NULL,
2180 NULL, USB_ROOT_HUB_ADDR);
2182 /* unsetup any leftover default USB transfers */
2183 usbd_transfer_unsetup(udev->ctrl_xfer, USB_CTRL_XFER_MAX);
2185 /* template unsetup, if any */
2186 (usb_temp_unsetup_p) (udev);
2189 * Make sure that our clear-stall messages are not queued
2192 USB_BUS_LOCK(udev->bus);
2193 usb_proc_mwait(USB_BUS_NON_GIANT_PROC(udev->bus),
2194 &udev->cs_msg[0], &udev->cs_msg[1]);
2195 USB_BUS_UNLOCK(udev->bus);
2197 sx_destroy(&udev->enum_sx);
2198 sx_destroy(&udev->sr_sx);
2200 cv_destroy(&udev->ctrlreq_cv);
2201 cv_destroy(&udev->ref_cv);
2203 mtx_destroy(&udev->device_mtx);
2205 KASSERT(LIST_FIRST(&udev->pd_list) == NULL, ("leaked cdev entries"));
2208 /* Uninitialise device */
2209 if (bus->methods->device_uninit != NULL)
2210 (bus->methods->device_uninit) (udev);
2213 free(udev->serial, M_USB);
2214 free(udev->manufacturer, M_USB);
2215 free(udev->product, M_USB);
2219 /*------------------------------------------------------------------------*
2222 * This function is the safe way to get the USB interface structure
2223 * pointer by interface index.
2226 * NULL: Interface not present.
2227 * Else: Pointer to USB interface structure.
2228 *------------------------------------------------------------------------*/
2229 struct usb_interface *
2230 usbd_get_iface(struct usb_device *udev, uint8_t iface_index)
2232 struct usb_interface *iface = udev->ifaces + iface_index;
2234 if (iface_index >= udev->ifaces_max)
2239 /*------------------------------------------------------------------------*
2240 * usbd_find_descriptor
2242 * This function will lookup the first descriptor that matches the
2243 * criteria given by the arguments "type" and "subtype". Descriptors
2244 * will only be searched within the interface having the index
2245 * "iface_index". If the "id" argument points to an USB descriptor,
2246 * it will be skipped before the search is started. This allows
2247 * searching for multiple descriptors using the same criteria. Else
2248 * the search is started after the interface descriptor.
2251 * NULL: End of descriptors
2252 * Else: A descriptor matching the criteria
2253 *------------------------------------------------------------------------*/
2255 usbd_find_descriptor(struct usb_device *udev, void *id, uint8_t iface_index,
2256 uint8_t type, uint8_t type_mask,
2257 uint8_t subtype, uint8_t subtype_mask)
2259 struct usb_descriptor *desc;
2260 struct usb_config_descriptor *cd;
2261 struct usb_interface *iface;
2263 cd = usbd_get_config_descriptor(udev);
2268 iface = usbd_get_iface(udev, iface_index);
2269 if (iface == NULL) {
2272 id = usbd_get_interface_descriptor(iface);
2279 while ((desc = usb_desc_foreach(cd, desc))) {
2281 if (desc->bDescriptorType == UDESC_INTERFACE) {
2284 if (((desc->bDescriptorType & type_mask) == type) &&
2285 ((desc->bDescriptorSubtype & subtype_mask) == subtype)) {
2292 /*------------------------------------------------------------------------*
2295 * This function will dump information from the device descriptor
2296 * belonging to the USB device pointed to by "udev", to the string
2297 * pointed to by "dst_ptr" having a maximum length of "dst_len" bytes
2298 * including the terminating zero.
2299 *------------------------------------------------------------------------*/
2301 usb_devinfo(struct usb_device *udev, char *dst_ptr, uint16_t dst_len)
2303 struct usb_device_descriptor *udd = &udev->ddesc;
2307 bcdUSB = UGETW(udd->bcdUSB);
2308 bcdDevice = UGETW(udd->bcdDevice);
2310 if (udd->bDeviceClass != 0xFF) {
2311 snprintf(dst_ptr, dst_len, "%s %s, class %d/%d, rev %x.%02x/"
2313 usb_get_manufacturer(udev),
2314 usb_get_product(udev),
2315 udd->bDeviceClass, udd->bDeviceSubClass,
2316 (bcdUSB >> 8), bcdUSB & 0xFF,
2317 (bcdDevice >> 8), bcdDevice & 0xFF,
2320 snprintf(dst_ptr, dst_len, "%s %s, rev %x.%02x/"
2322 usb_get_manufacturer(udev),
2323 usb_get_product(udev),
2324 (bcdUSB >> 8), bcdUSB & 0xFF,
2325 (bcdDevice >> 8), bcdDevice & 0xFF,
2332 * Descriptions of of known vendors and devices ("products").
2334 struct usb_knowndev {
2338 const char *vendorname;
2339 const char *productname;
2342 #define USB_KNOWNDEV_NOPROD 0x01 /* match on vendor only */
2344 #include "usbdevs.h"
2345 #include "usbdevs_data.h"
2346 #endif /* USB_VERBOSE */
2349 usbd_set_device_strings(struct usb_device *udev)
2351 struct usb_device_descriptor *udd = &udev->ddesc;
2353 const struct usb_knowndev *kdp;
2358 uint16_t product_id;
2361 /* Protect scratch area */
2362 do_unlock = usbd_enum_lock(udev);
2364 temp_ptr = (char *)udev->scratch.data;
2365 temp_size = sizeof(udev->scratch.data);
2367 vendor_id = UGETW(udd->idVendor);
2368 product_id = UGETW(udd->idProduct);
2370 /* get serial number string */
2371 usbd_req_get_string_any(udev, NULL, temp_ptr, temp_size,
2372 udev->ddesc.iSerialNumber);
2373 udev->serial = strdup(temp_ptr, M_USB);
2375 /* get manufacturer string */
2376 usbd_req_get_string_any(udev, NULL, temp_ptr, temp_size,
2377 udev->ddesc.iManufacturer);
2378 usb_trim_spaces(temp_ptr);
2379 if (temp_ptr[0] != '\0')
2380 udev->manufacturer = strdup(temp_ptr, M_USB);
2382 /* get product string */
2383 usbd_req_get_string_any(udev, NULL, temp_ptr, temp_size,
2384 udev->ddesc.iProduct);
2385 usb_trim_spaces(temp_ptr);
2386 if (temp_ptr[0] != '\0')
2387 udev->product = strdup(temp_ptr, M_USB);
2390 if (udev->manufacturer == NULL || udev->product == NULL) {
2391 for (kdp = usb_knowndevs; kdp->vendorname != NULL; kdp++) {
2392 if (kdp->vendor == vendor_id &&
2393 (kdp->product == product_id ||
2394 (kdp->flags & USB_KNOWNDEV_NOPROD) != 0))
2397 if (kdp->vendorname != NULL) {
2398 /* XXX should use pointer to knowndevs string */
2399 if (udev->manufacturer == NULL) {
2400 udev->manufacturer = strdup(kdp->vendorname,
2403 if (udev->product == NULL &&
2404 (kdp->flags & USB_KNOWNDEV_NOPROD) == 0) {
2405 udev->product = strdup(kdp->productname,
2411 /* Provide default strings if none were found */
2412 if (udev->manufacturer == NULL) {
2413 snprintf(temp_ptr, temp_size, "vendor 0x%04x", vendor_id);
2414 udev->manufacturer = strdup(temp_ptr, M_USB);
2416 if (udev->product == NULL) {
2417 snprintf(temp_ptr, temp_size, "product 0x%04x", product_id);
2418 udev->product = strdup(temp_ptr, M_USB);
2422 usbd_enum_unlock(udev);
2430 usbd_get_mode(struct usb_device *udev)
2432 return (udev->flags.usb_mode);
2437 * See: USB_SPEED_XXX
2440 usbd_get_speed(struct usb_device *udev)
2442 return (udev->speed);
2446 usbd_get_isoc_fps(struct usb_device *udev)
2449 switch (udev->speed) {
2451 case USB_SPEED_FULL:
2458 struct usb_device_descriptor *
2459 usbd_get_device_descriptor(struct usb_device *udev)
2462 return (NULL); /* be NULL safe */
2463 return (&udev->ddesc);
2466 struct usb_config_descriptor *
2467 usbd_get_config_descriptor(struct usb_device *udev)
2470 return (NULL); /* be NULL safe */
2471 return (udev->cdesc);
2474 /*------------------------------------------------------------------------*
2475 * usb_test_quirk - test a device for a given quirk
2478 * 0: The USB device does not have the given quirk.
2479 * Else: The USB device has the given quirk.
2480 *------------------------------------------------------------------------*/
2482 usb_test_quirk(const struct usb_attach_arg *uaa, uint16_t quirk)
2487 if (quirk == UQ_NONE)
2490 /* search the automatic per device quirks first */
2492 for (x = 0; x != USB_MAX_AUTO_QUIRK; x++) {
2493 if (uaa->device->autoQuirk[x] == quirk)
2497 /* search global quirk table, if any */
2499 found = (usb_test_quirk_p) (&uaa->info, quirk);
2504 struct usb_interface_descriptor *
2505 usbd_get_interface_descriptor(struct usb_interface *iface)
2508 return (NULL); /* be NULL safe */
2509 return (iface->idesc);
2513 usbd_get_interface_altindex(struct usb_interface *iface)
2515 return (iface->alt_index);
2519 usbd_get_bus_index(struct usb_device *udev)
2521 return ((uint8_t)device_get_unit(udev->bus->bdev));
2525 usbd_get_device_index(struct usb_device *udev)
2527 return (udev->device_index);
2532 usb_notify_addq(const char *type, struct usb_device *udev)
2534 struct usb_interface *iface;
2538 /* announce the device */
2539 sb = sbuf_new_auto();
2548 "devsubclass=0x%02x "
2561 UGETW(udev->ddesc.idVendor),
2562 UGETW(udev->ddesc.idProduct),
2563 udev->ddesc.bDeviceClass,
2564 udev->ddesc.bDeviceSubClass,
2565 usb_get_serial(udev),
2566 UGETW(udev->ddesc.bcdDevice),
2567 (udev->flags.usb_mode == USB_MODE_HOST) ? "host" : "device",
2570 , udev->parent_hub != NULL ?
2571 udev->parent_hub->ugen_name :
2572 device_get_nameunit(device_get_parent(udev->bus->bdev))
2576 devctl_notify("USB", "DEVICE", type, sbuf_data(sb));
2579 /* announce each interface */
2580 for (i = 0; i < USB_IFACE_MAX; i++) {
2581 iface = usbd_get_iface(udev, i);
2583 break; /* end of interfaces */
2584 if (iface->idesc == NULL)
2585 continue; /* no interface descriptor */
2587 sb = sbuf_new_auto();
2596 "devsubclass=0x%02x "
2603 "intsubclass=0x%02x "
2604 "intprotocol=0x%02x",
2609 UGETW(udev->ddesc.idVendor),
2610 UGETW(udev->ddesc.idProduct),
2611 udev->ddesc.bDeviceClass,
2612 udev->ddesc.bDeviceSubClass,
2613 usb_get_serial(udev),
2614 UGETW(udev->ddesc.bcdDevice),
2615 (udev->flags.usb_mode == USB_MODE_HOST) ? "host" : "device",
2616 iface->idesc->bInterfaceNumber,
2617 iface->idesc->bNumEndpoints,
2618 iface->idesc->bInterfaceClass,
2619 iface->idesc->bInterfaceSubClass,
2620 iface->idesc->bInterfaceProtocol);
2622 devctl_notify("USB", "INTERFACE", type, sbuf_data(sb));
2629 /*------------------------------------------------------------------------*
2630 * usb_fifo_free_wrap
2632 * This function will free the FIFOs.
2634 * Description of "flag" argument: If the USB_UNCFG_FLAG_FREE_EP0 flag
2635 * is set and "iface_index" is set to "USB_IFACE_INDEX_ANY", we free
2636 * all FIFOs. If the USB_UNCFG_FLAG_FREE_EP0 flag is not set and
2637 * "iface_index" is set to "USB_IFACE_INDEX_ANY", we free all non
2638 * control endpoint FIFOs. If "iface_index" is not set to
2639 * "USB_IFACE_INDEX_ANY" the flag has no effect.
2640 *------------------------------------------------------------------------*/
2642 usb_fifo_free_wrap(struct usb_device *udev,
2643 uint8_t iface_index, uint8_t flag)
2649 * Free any USB FIFOs on the given interface:
2651 for (i = 0; i != USB_FIFO_MAX; i++) {
2656 /* Check if the interface index matches */
2657 if (iface_index == f->iface_index) {
2658 if (f->methods != &usb_ugen_methods) {
2660 * Don't free any non-generic FIFOs in
2665 if ((f->dev_ep_index == 0) &&
2666 (f->fs_xfer == NULL)) {
2667 /* no need to free this FIFO */
2670 } else if (iface_index == USB_IFACE_INDEX_ANY) {
2671 if ((f->methods == &usb_ugen_methods) &&
2672 (f->dev_ep_index == 0) &&
2673 (!(flag & USB_UNCFG_FLAG_FREE_EP0)) &&
2674 (f->fs_xfer == NULL)) {
2675 /* no need to free this FIFO */
2679 /* no need to free this FIFO */
2682 /* wait for pending refs to go away */
2683 usb_wait_pending_ref_locked(udev);
2685 /* free this FIFO */
2688 /* restore refcount */
2689 usb_ref_restore_locked(udev);
2694 /*------------------------------------------------------------------------*
2695 * usb_peer_can_wakeup
2698 * 0: Peer cannot do resume signalling.
2699 * Else: Peer can do resume signalling.
2700 *------------------------------------------------------------------------*/
2702 usb_peer_can_wakeup(struct usb_device *udev)
2704 const struct usb_config_descriptor *cdp;
2707 if ((cdp != NULL) && (udev->flags.usb_mode == USB_MODE_HOST)) {
2708 return (cdp->bmAttributes & UC_REMOTE_WAKEUP);
2710 return (0); /* not supported */
2714 usb_set_device_state(struct usb_device *udev, enum usb_dev_state state)
2717 KASSERT(state < USB_STATE_MAX, ("invalid udev state"));
2719 DPRINTF("udev %p state %s -> %s\n", udev,
2720 usb_statestr(udev->state), usb_statestr(state));
2723 mtx_lock(&usb_ref_lock);
2725 udev->state = state;
2727 mtx_unlock(&usb_ref_lock);
2729 if (udev->bus->methods->device_state_change != NULL)
2730 (udev->bus->methods->device_state_change) (udev);
2734 usb_get_device_state(struct usb_device *udev)
2737 return (USB_STATE_DETACHED);
2738 return (udev->state);
2742 usbd_device_attached(struct usb_device *udev)
2744 return (udev->state > USB_STATE_DETACHED);
2748 * The following function locks enumerating the given USB device. If
2749 * the lock is already grabbed this function returns zero. Else a
2750 * non-zero value is returned.
2753 usbd_enum_lock(struct usb_device *udev)
2755 if (sx_xlocked(&udev->enum_sx))
2758 sx_xlock(&udev->enum_sx);
2759 sx_xlock(&udev->sr_sx);
2761 * NEWBUS LOCK NOTE: We should check if any parent SX locks
2762 * are locked before locking Giant. Else the lock can be
2763 * locked multiple times.
2769 /* The following function unlocks enumerating the given USB device. */
2772 usbd_enum_unlock(struct usb_device *udev)
2775 sx_xunlock(&udev->enum_sx);
2776 sx_xunlock(&udev->sr_sx);
2779 /* The following function locks suspend and resume. */
2782 usbd_sr_lock(struct usb_device *udev)
2784 sx_xlock(&udev->sr_sx);
2786 * NEWBUS LOCK NOTE: We should check if any parent SX locks
2787 * are locked before locking Giant. Else the lock can be
2788 * locked multiple times.
2793 /* The following function unlocks suspend and resume. */
2796 usbd_sr_unlock(struct usb_device *udev)
2799 sx_xunlock(&udev->sr_sx);
2803 * The following function checks the enumerating lock for the given
2808 usbd_enum_is_locked(struct usb_device *udev)
2810 return (sx_xlocked(&udev->enum_sx));
2814 * The following function is used to set the per-interface specific
2815 * plug and play information. The string referred to by the pnpinfo
2816 * argument can safely be freed after calling this function. The
2817 * pnpinfo of an interface will be reset at device detach or when
2818 * passing a NULL argument to this function. This function
2819 * returns zero on success, else a USB_ERR_XXX failure code.
2823 usbd_set_pnpinfo(struct usb_device *udev, uint8_t iface_index, const char *pnpinfo)
2825 struct usb_interface *iface;
2827 iface = usbd_get_iface(udev, iface_index);
2829 return (USB_ERR_INVAL);
2831 if (iface->pnpinfo != NULL) {
2832 free(iface->pnpinfo, M_USBDEV);
2833 iface->pnpinfo = NULL;
2836 if (pnpinfo == NULL || pnpinfo[0] == 0)
2837 return (0); /* success */
2839 iface->pnpinfo = strdup(pnpinfo, M_USBDEV);
2840 if (iface->pnpinfo == NULL)
2841 return (USB_ERR_NOMEM);
2843 return (0); /* success */
2847 usbd_add_dynamic_quirk(struct usb_device *udev, uint16_t quirk)
2851 for (x = 0; x != USB_MAX_AUTO_QUIRK; x++) {
2852 if (udev->autoQuirk[x] == 0 ||
2853 udev->autoQuirk[x] == quirk) {
2854 udev->autoQuirk[x] = quirk;
2855 return (0); /* success */
2858 return (USB_ERR_NOMEM);
2862 * The following function is used to select the endpoint mode. It
2863 * should not be called outside enumeration context.
2867 usbd_set_endpoint_mode(struct usb_device *udev, struct usb_endpoint *ep,
2873 /* Prevent re-enumeration */
2874 do_unlock = usbd_enum_lock(udev);
2876 if (udev->bus->methods->set_endpoint_mode != NULL) {
2877 error = (udev->bus->methods->set_endpoint_mode) (
2879 } else if (ep_mode != USB_EP_MODE_DEFAULT) {
2880 error = USB_ERR_INVAL;
2885 /* only set new mode regardless of error */
2886 ep->ep_mode = ep_mode;
2889 usbd_enum_unlock(udev);
2894 usbd_get_endpoint_mode(struct usb_device *udev, struct usb_endpoint *ep)
2896 return (ep->ep_mode);