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 #include <sys/stdint.h>
28 #include <sys/stddef.h>
29 #include <sys/param.h>
30 #include <sys/queue.h>
31 #include <sys/types.h>
32 #include <sys/systm.h>
33 #include <sys/kernel.h>
35 #include <sys/module.h>
37 #include <sys/mutex.h>
38 #include <sys/condvar.h>
39 #include <sys/sysctl.h>
41 #include <sys/unistd.h>
42 #include <sys/callout.h>
43 #include <sys/malloc.h>
46 #include <sys/fcntl.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>
59 #define USB_DEBUG_VAR usb_debug
61 #include <dev/usb/usb_core.h>
62 #include <dev/usb/usb_debug.h>
63 #include <dev/usb/usb_process.h>
64 #include <dev/usb/usb_device.h>
65 #include <dev/usb/usb_busdma.h>
66 #include <dev/usb/usb_transfer.h>
67 #include <dev/usb/usb_request.h>
68 #include <dev/usb/usb_dynamic.h>
69 #include <dev/usb/usb_hub.h>
70 #include <dev/usb/usb_util.h>
71 #include <dev/usb/usb_msctest.h>
73 #include <dev/usb/usb_dev.h>
74 #include <dev/usb/usb_generic.h>
77 #include <dev/usb/quirk/usb_quirk.h>
79 #include <dev/usb/usb_controller.h>
80 #include <dev/usb/usb_bus.h>
82 /* function prototypes */
84 static void usb_init_endpoint(struct usb_device *, uint8_t,
85 struct usb_endpoint_descriptor *,
86 struct usb_endpoint_ss_comp_descriptor *,
87 struct usb_endpoint *);
88 static void usb_unconfigure(struct usb_device *, uint8_t);
89 static void usb_detach_device_sub(struct usb_device *, device_t *,
91 static uint8_t usb_probe_and_attach_sub(struct usb_device *,
92 struct usb_attach_arg *);
93 static void usb_init_attach_arg(struct usb_device *,
94 struct usb_attach_arg *);
95 static void usb_suspend_resume_sub(struct usb_device *, device_t,
97 static usb_proc_callback_t usbd_clear_stall_proc;
98 static usb_error_t usb_config_parse(struct usb_device *, uint8_t, uint8_t);
99 static void usbd_set_device_strings(struct usb_device *);
101 static void usb_notify_addq(const char *type, struct usb_device *);
104 static void usb_fifo_free_wrap(struct usb_device *, uint8_t, uint8_t);
105 static void usb_cdev_create(struct usb_device *);
106 static void usb_cdev_free(struct usb_device *);
109 /* This variable is global to allow easy access to it: */
111 int usb_template = 0;
113 TUNABLE_INT("hw.usb.usb_template", &usb_template);
114 SYSCTL_INT(_hw_usb, OID_AUTO, template, CTLFLAG_RW | CTLFLAG_TUN,
115 &usb_template, 0, "Selected USB device side template");
117 /* English is default language */
119 static int usb_lang_id = 0x0009;
120 static int usb_lang_mask = 0x00FF;
122 TUNABLE_INT("hw.usb.usb_lang_id", &usb_lang_id);
123 SYSCTL_INT(_hw_usb, OID_AUTO, usb_lang_id, CTLFLAG_RW | CTLFLAG_TUN,
124 &usb_lang_id, 0, "Preferred USB language ID");
126 TUNABLE_INT("hw.usb.usb_lang_mask", &usb_lang_mask);
127 SYSCTL_INT(_hw_usb, OID_AUTO, usb_lang_mask, CTLFLAG_RW | CTLFLAG_TUN,
128 &usb_lang_mask, 0, "Preferred USB language mask");
130 static const char* statestr[USB_STATE_MAX] = {
131 [USB_STATE_DETACHED] = "DETACHED",
132 [USB_STATE_ATTACHED] = "ATTACHED",
133 [USB_STATE_POWERED] = "POWERED",
134 [USB_STATE_ADDRESSED] = "ADDRESSED",
135 [USB_STATE_CONFIGURED] = "CONFIGURED",
139 usb_statestr(enum usb_dev_state state)
141 return ((state < USB_STATE_MAX) ? statestr[state] : "UNKNOWN");
145 usb_get_manufacturer(struct usb_device *udev)
147 return (udev->manufacturer ? udev->manufacturer : "Unknown");
151 usb_get_product(struct usb_device *udev)
153 return (udev->product ? udev->product : "");
157 usb_get_serial(struct usb_device *udev)
159 return (udev->serial ? udev->serial : "");
162 /*------------------------------------------------------------------------*
163 * usbd_get_ep_by_addr
165 * This function searches for an USB ep by endpoint address and
171 *------------------------------------------------------------------------*/
172 struct usb_endpoint *
173 usbd_get_ep_by_addr(struct usb_device *udev, uint8_t ea_val)
175 struct usb_endpoint *ep = udev->endpoints;
176 struct usb_endpoint *ep_end = udev->endpoints + udev->endpoints_max;
178 EA_MASK = (UE_DIR_IN | UE_DIR_OUT | UE_ADDR),
182 * According to the USB specification not all bits are used
183 * for the endpoint address. Keep defined bits only:
188 * Iterate accross all the USB endpoints searching for a match
189 * based on the endpoint address:
191 for (; ep != ep_end; ep++) {
193 if (ep->edesc == NULL) {
196 /* do the mask and check the value */
197 if ((ep->edesc->bEndpointAddress & EA_MASK) == ea_val) {
203 * The default endpoint is always present and is checked separately:
205 if ((udev->ctrl_ep.edesc) &&
206 ((udev->ctrl_ep.edesc->bEndpointAddress & EA_MASK) == ea_val)) {
216 /*------------------------------------------------------------------------*
219 * This function searches for an USB endpoint based on the information
220 * given by the passed "struct usb_config" pointer.
224 * Else: Pointer to "struct usb_endpoint".
225 *------------------------------------------------------------------------*/
226 struct usb_endpoint *
227 usbd_get_endpoint(struct usb_device *udev, uint8_t iface_index,
228 const struct usb_config *setup)
230 struct usb_endpoint *ep = udev->endpoints;
231 struct usb_endpoint *ep_end = udev->endpoints + udev->endpoints_max;
232 uint8_t index = setup->ep_index;
238 DPRINTFN(10, "udev=%p iface_index=%d address=0x%x "
239 "type=0x%x dir=0x%x index=%d\n",
240 udev, iface_index, setup->endpoint,
241 setup->type, setup->direction, setup->ep_index);
245 if (setup->usb_mode != USB_MODE_DUAL &&
246 udev->flags.usb_mode != setup->usb_mode) {
247 /* wrong mode - no endpoint */
251 /* setup expected endpoint direction mask and value */
253 if (setup->direction == UE_DIR_RX) {
254 ea_mask = (UE_DIR_IN | UE_DIR_OUT);
255 ea_val = (udev->flags.usb_mode == USB_MODE_DEVICE) ?
256 UE_DIR_OUT : UE_DIR_IN;
257 } else if (setup->direction == UE_DIR_TX) {
258 ea_mask = (UE_DIR_IN | UE_DIR_OUT);
259 ea_val = (udev->flags.usb_mode == USB_MODE_DEVICE) ?
260 UE_DIR_IN : UE_DIR_OUT;
261 } else if (setup->direction == UE_DIR_ANY) {
262 /* match any endpoint direction */
266 /* match the given endpoint direction */
267 ea_mask = (UE_DIR_IN | UE_DIR_OUT);
268 ea_val = (setup->direction & (UE_DIR_IN | UE_DIR_OUT));
271 /* setup expected endpoint address */
273 if (setup->endpoint == UE_ADDR_ANY) {
274 /* match any endpoint address */
276 /* match the given endpoint address */
278 ea_val |= (setup->endpoint & UE_ADDR);
281 /* setup expected endpoint type */
283 if (setup->type == UE_BULK_INTR) {
284 /* this will match BULK and INTERRUPT endpoints */
287 } else if (setup->type == UE_TYPE_ANY) {
288 /* match any endpoint type */
292 /* match the given endpoint type */
293 type_mask = UE_XFERTYPE;
294 type_val = (setup->type & UE_XFERTYPE);
298 * Iterate accross all the USB endpoints searching for a match
299 * based on the endpoint address. Note that we are searching
300 * the endpoints from the beginning of the "udev->endpoints" array.
302 for (; ep != ep_end; ep++) {
304 if ((ep->edesc == NULL) ||
305 (ep->iface_index != iface_index)) {
308 /* do the masks and check the values */
310 if (((ep->edesc->bEndpointAddress & ea_mask) == ea_val) &&
311 ((ep->edesc->bmAttributes & type_mask) == type_val)) {
319 * Match against default endpoint last, so that "any endpoint", "any
320 * address" and "any direction" returns the first endpoint of the
321 * interface. "iface_index" and "direction" is ignored:
323 if ((udev->ctrl_ep.edesc) &&
324 ((udev->ctrl_ep.edesc->bEndpointAddress & ea_mask) == ea_val) &&
325 ((udev->ctrl_ep.edesc->bmAttributes & type_mask) == type_val) &&
336 /*------------------------------------------------------------------------*
337 * usbd_interface_count
339 * This function stores the number of USB interfaces excluding
340 * alternate settings, which the USB config descriptor reports into
341 * the unsigned 8-bit integer pointed to by "count".
346 *------------------------------------------------------------------------*/
348 usbd_interface_count(struct usb_device *udev, uint8_t *count)
350 if (udev->cdesc == NULL) {
352 return (USB_ERR_NOT_CONFIGURED);
354 *count = udev->ifaces_max;
355 return (USB_ERR_NORMAL_COMPLETION);
359 /*------------------------------------------------------------------------*
362 * This function will initialise the USB endpoint structure pointed to by
363 * the "endpoint" argument. The structure pointed to by "endpoint" must be
364 * zeroed before calling this function.
365 *------------------------------------------------------------------------*/
367 usb_init_endpoint(struct usb_device *udev, uint8_t iface_index,
368 struct usb_endpoint_descriptor *edesc,
369 struct usb_endpoint_ss_comp_descriptor *ecomp,
370 struct usb_endpoint *ep)
372 struct usb_bus_methods *methods;
374 methods = udev->bus->methods;
376 (methods->endpoint_init) (udev, edesc, ep);
378 /* initialise USB endpoint structure */
381 ep->iface_index = iface_index;
382 TAILQ_INIT(&ep->endpoint_q.head);
383 ep->endpoint_q.command = &usbd_pipe_start;
385 /* the pipe is not supported by the hardware */
386 if (ep->methods == NULL)
389 /* clear stall, if any */
390 if (methods->clear_stall != NULL) {
391 USB_BUS_LOCK(udev->bus);
392 (methods->clear_stall) (udev, ep);
393 USB_BUS_UNLOCK(udev->bus);
397 /*-----------------------------------------------------------------------*
398 * usb_endpoint_foreach
400 * This function will iterate all the USB endpoints except the control
401 * endpoint. This function is NULL safe.
404 * NULL: End of USB endpoints
405 * Else: Pointer to next USB endpoint
406 *------------------------------------------------------------------------*/
407 struct usb_endpoint *
408 usb_endpoint_foreach(struct usb_device *udev, struct usb_endpoint *ep)
410 struct usb_endpoint *ep_end;
416 ep_end = udev->endpoints + udev->endpoints_max;
418 /* get next endpoint */
420 ep = udev->endpoints;
424 /* find next allocated ep */
425 while (ep != ep_end) {
426 if (ep->edesc != NULL)
435 usb_get_refcount(struct usb_device *udev)
437 if (usb_proc_is_called_from(&udev->bus->explore_proc) ||
438 usb_proc_is_called_from(&udev->bus->control_xfer_proc))
444 /*------------------------------------------------------------------------*
445 * usb_wait_pending_ref_locked
447 * This function will wait for any USB references to go away before
448 * returning and disable further USB device refcounting on the
449 * specified USB device. This function is used when detaching a USB
451 *------------------------------------------------------------------------*/
453 usb_wait_pending_ref_locked(struct usb_device *udev)
456 const uint16_t refcount = usb_get_refcount(udev);
458 DPRINTF("Refcount = %d\n", (int)refcount);
461 /* wait for any pending references to go away */
462 mtx_lock(&usb_ref_lock);
463 if (udev->refcount == refcount) {
464 /* prevent further refs being taken */
465 udev->refcount = USB_DEV_REF_MAX;
466 mtx_unlock(&usb_ref_lock);
469 usbd_enum_unlock(udev);
470 cv_wait(&udev->ref_cv, &usb_ref_lock);
471 mtx_unlock(&usb_ref_lock);
472 (void) usbd_enum_lock(udev);
477 /*------------------------------------------------------------------------*
478 * usb_ref_restore_locked
480 * This function will restore the reference count value after a call
481 * to "usb_wait_pending_ref_locked()".
482 *------------------------------------------------------------------------*/
484 usb_ref_restore_locked(struct usb_device *udev)
487 const uint16_t refcount = usb_get_refcount(udev);
489 DPRINTF("Refcount = %d\n", (int)refcount);
491 /* restore reference count and wakeup waiters, if any */
492 mtx_lock(&usb_ref_lock);
493 udev->refcount = refcount;
494 cv_broadcast(&udev->ref_cv);
495 mtx_unlock(&usb_ref_lock);
499 /*------------------------------------------------------------------------*
502 * This function will free all USB interfaces and USB endpoints belonging
505 * Flag values, see "USB_UNCFG_FLAG_XXX".
506 *------------------------------------------------------------------------*/
508 usb_unconfigure(struct usb_device *udev, uint8_t flag)
512 /* Prevent re-enumeration */
513 do_unlock = usbd_enum_lock(udev);
515 /* detach all interface drivers */
516 usb_detach_device(udev, USB_IFACE_INDEX_ANY, flag);
519 /* free all FIFOs except control endpoint FIFOs */
520 usb_fifo_free_wrap(udev, USB_IFACE_INDEX_ANY, flag);
523 * Free all cdev's, if any.
528 #if USB_HAVE_COMPAT_LINUX
529 /* free Linux compat device, if any */
530 if (udev->linux_endpoint_start) {
531 usb_linux_free_device(udev);
532 udev->linux_endpoint_start = NULL;
536 usb_config_parse(udev, USB_IFACE_INDEX_ANY, USB_CFG_FREE);
538 /* free "cdesc" after "ifaces" and "endpoints", if any */
539 if (udev->cdesc != NULL) {
540 if (udev->flags.usb_mode != USB_MODE_DEVICE)
541 free(udev->cdesc, M_USB);
544 /* set unconfigured state */
545 udev->curr_config_no = USB_UNCONFIG_NO;
546 udev->curr_config_index = USB_UNCONFIG_INDEX;
549 usbd_enum_unlock(udev);
552 /*------------------------------------------------------------------------*
553 * usbd_set_config_index
555 * This function selects configuration by index, independent of the
556 * actual configuration number. This function should not be used by
562 *------------------------------------------------------------------------*/
564 usbd_set_config_index(struct usb_device *udev, uint8_t index)
566 struct usb_status ds;
567 struct usb_config_descriptor *cdp;
574 DPRINTFN(6, "udev=%p index=%d\n", udev, index);
576 /* Prevent re-enumeration */
577 do_unlock = usbd_enum_lock(udev);
579 usb_unconfigure(udev, 0);
581 if (index == USB_UNCONFIG_INDEX) {
583 * Leave unallocated when unconfiguring the
584 * device. "usb_unconfigure()" will also reset
585 * the current config number and index.
587 err = usbd_req_set_config(udev, NULL, USB_UNCONFIG_NO);
588 if (udev->state == USB_STATE_CONFIGURED)
589 usb_set_device_state(udev, USB_STATE_ADDRESSED);
592 /* get the full config descriptor */
593 if (udev->flags.usb_mode == USB_MODE_DEVICE) {
594 /* save some memory */
595 err = usbd_req_get_descriptor_ptr(udev, &cdp,
596 (UDESC_CONFIG << 8) | index);
599 err = usbd_req_get_config_desc_full(udev,
600 NULL, &cdp, M_USB, index);
605 /* set the new config descriptor */
609 /* Figure out if the device is self or bus powered. */
611 if ((!udev->flags.uq_bus_powered) &&
612 (cdp->bmAttributes & UC_SELF_POWERED) &&
613 (udev->flags.usb_mode == USB_MODE_HOST)) {
614 /* May be self powered. */
615 if (cdp->bmAttributes & UC_BUS_POWERED) {
616 /* Must ask device. */
617 err = usbd_req_get_device_status(udev, NULL, &ds);
619 DPRINTFN(0, "could not read "
620 "device status: %s\n",
622 } else if (UGETW(ds.wStatus) & UDS_SELF_POWERED) {
625 DPRINTF("status=0x%04x \n",
630 DPRINTF("udev=%p cdesc=%p (addr %d) cno=%d attr=0x%02x, "
631 "selfpowered=%d, power=%d\n",
633 udev->address, cdp->bConfigurationValue, cdp->bmAttributes,
634 selfpowered, cdp->bMaxPower * 2);
636 /* Check if we have enough power. */
637 power = cdp->bMaxPower * 2;
639 if (udev->parent_hub) {
640 max_power = udev->parent_hub->hub->portpower;
642 max_power = USB_MAX_POWER;
645 if (power > max_power) {
646 DPRINTFN(0, "power exceeded %d > %d\n", power, max_power);
647 err = USB_ERR_NO_POWER;
650 /* Only update "self_powered" in USB Host Mode */
651 if (udev->flags.usb_mode == USB_MODE_HOST) {
652 udev->flags.self_powered = selfpowered;
655 udev->curr_config_no = cdp->bConfigurationValue;
656 udev->curr_config_index = index;
657 usb_set_device_state(udev, USB_STATE_CONFIGURED);
659 /* Set the actual configuration value. */
660 err = usbd_req_set_config(udev, NULL, cdp->bConfigurationValue);
665 err = usb_config_parse(udev, USB_IFACE_INDEX_ANY, USB_CFG_ALLOC);
670 err = usb_config_parse(udev, USB_IFACE_INDEX_ANY, USB_CFG_INIT);
676 /* create device nodes for each endpoint */
677 usb_cdev_create(udev);
681 DPRINTF("error=%s\n", usbd_errstr(err));
683 usb_unconfigure(udev, 0);
686 usbd_enum_unlock(udev);
690 /*------------------------------------------------------------------------*
693 * This function will allocate and free USB interfaces and USB endpoints,
694 * parse the USB configuration structure and initialise the USB endpoints
695 * and interfaces. If "iface_index" is not equal to
696 * "USB_IFACE_INDEX_ANY" then the "cmd" parameter is the
697 * alternate_setting to be selected for the given interface. Else the
698 * "cmd" parameter is defined by "USB_CFG_XXX". "iface_index" can be
699 * "USB_IFACE_INDEX_ANY" or a valid USB interface index. This function
700 * is typically called when setting the configuration or when setting
701 * an alternate interface.
706 *------------------------------------------------------------------------*/
708 usb_config_parse(struct usb_device *udev, uint8_t iface_index, uint8_t cmd)
710 struct usb_idesc_parse_state ips;
711 struct usb_interface_descriptor *id;
712 struct usb_endpoint_descriptor *ed;
713 struct usb_interface *iface;
714 struct usb_endpoint *ep;
722 if (iface_index != USB_IFACE_INDEX_ANY) {
723 /* parameter overload */
733 DPRINTFN(5, "iface_index=%d cmd=%d\n",
736 if (cmd == USB_CFG_FREE)
739 if (cmd == USB_CFG_INIT) {
740 sx_assert(&udev->enum_sx, SA_LOCKED);
742 /* check for in-use endpoints */
744 ep = udev->endpoints;
745 ep_max = udev->endpoints_max;
747 /* look for matching endpoints */
748 if ((iface_index == USB_IFACE_INDEX_ANY) ||
749 (iface_index == ep->iface_index)) {
750 if (ep->refcount_alloc != 0) {
752 * This typically indicates a
753 * more serious error.
755 err = USB_ERR_IN_USE;
758 memset(ep, 0, sizeof(*ep));
759 /* make sure we don't zero the endpoint again */
760 ep->iface_index = USB_IFACE_INDEX_ANY;
770 memset(&ips, 0, sizeof(ips));
775 while ((id = usb_idesc_foreach(udev->cdesc, &ips))) {
777 /* check for interface overflow */
778 if (ips.iface_index == USB_IFACE_MAX)
781 iface = udev->ifaces + ips.iface_index;
783 /* check for specific interface match */
785 if (cmd == USB_CFG_INIT) {
786 if ((iface_index != USB_IFACE_INDEX_ANY) &&
787 (iface_index != ips.iface_index)) {
788 /* wrong interface */
790 } else if (alt_index != ips.iface_index_alt) {
791 /* wrong alternate setting */
794 /* initialise interface */
800 /* check for new interface */
801 if (ips.iface_index_alt == 0) {
802 /* update current number of endpoints */
807 /* setup the USB interface structure */
809 /* set alternate index */
810 iface->alt_index = alt_index;
811 /* set default interface parent */
812 if (iface_index == USB_IFACE_INDEX_ANY) {
813 iface->parent_iface_index =
818 DPRINTFN(5, "found idesc nendpt=%d\n", id->bNumEndpoints);
820 ed = (struct usb_endpoint_descriptor *)id;
824 /* iterate all the endpoint descriptors */
825 while ((ed = usb_edesc_foreach(udev->cdesc, ed))) {
827 if (temp == USB_EP_MAX)
830 ep = udev->endpoints + temp;
835 ecomp = usb_ed_comp_foreach(udev->cdesc, (void *)ed);
837 DPRINTFN(5, "Found endpoint companion descriptor\n");
839 usb_init_endpoint(udev,
840 ips.iface_index, ed, ecomp, ep);
845 /* find maximum number of endpoints */
851 /* NOTE: It is valid to have no interfaces and no endpoints! */
853 if (cmd == USB_CFG_ALLOC) {
854 udev->ifaces_max = ips.iface_index;
856 if (udev->ifaces_max != 0) {
857 udev->ifaces = malloc(sizeof(*iface) * udev->ifaces_max,
858 M_USB, M_WAITOK | M_ZERO);
859 if (udev->ifaces == NULL) {
865 udev->endpoints = malloc(sizeof(*ep) * ep_max,
866 M_USB, M_WAITOK | M_ZERO);
867 if (udev->endpoints == NULL) {
872 udev->endpoints = NULL;
874 USB_BUS_LOCK(udev->bus);
875 udev->endpoints_max = ep_max;
876 /* reset any ongoing clear-stall */
877 udev->ep_curr = NULL;
878 USB_BUS_UNLOCK(udev->bus);
883 if (cmd == USB_CFG_ALLOC) {
885 USB_BUS_LOCK(udev->bus);
886 udev->endpoints_max = 0;
887 /* reset any ongoing clear-stall */
888 udev->ep_curr = NULL;
889 USB_BUS_UNLOCK(udev->bus);
892 if (udev->ifaces != NULL)
893 free(udev->ifaces, M_USB);
894 if (udev->endpoints != NULL)
895 free(udev->endpoints, M_USB);
898 udev->endpoints = NULL;
899 udev->ifaces_max = 0;
905 /*------------------------------------------------------------------------*
906 * usbd_set_alt_interface_index
908 * This function will select an alternate interface index for the
909 * given interface index. The interface should not be in use when this
910 * function is called. That means there should not be any open USB
911 * transfers. Else an error is returned. If the alternate setting is
912 * already set this function will simply return success. This function
913 * is called in Host mode and Device mode!
918 *------------------------------------------------------------------------*/
920 usbd_set_alt_interface_index(struct usb_device *udev,
921 uint8_t iface_index, uint8_t alt_index)
923 struct usb_interface *iface = usbd_get_iface(udev, iface_index);
927 /* Prevent re-enumeration */
928 do_unlock = usbd_enum_lock(udev);
934 if (iface->alt_index == alt_index) {
936 * Optimise away duplicate setting of
937 * alternate setting in USB Host Mode!
944 * Free all generic FIFOs for this interface, except control
947 usb_fifo_free_wrap(udev, iface_index, 0);
950 err = usb_config_parse(udev, iface_index, alt_index);
954 if (iface->alt_index != alt_index) {
955 /* the alternate setting does not exist */
960 err = usbd_req_set_alt_interface_no(udev, NULL, iface_index,
961 iface->idesc->bAlternateSetting);
965 usbd_enum_unlock(udev);
969 /*------------------------------------------------------------------------*
970 * usbd_set_endpoint_stall
972 * This function is used to make a BULK or INTERRUPT endpoint send
973 * STALL tokens in USB device mode.
978 *------------------------------------------------------------------------*/
980 usbd_set_endpoint_stall(struct usb_device *udev, struct usb_endpoint *ep,
983 struct usb_xfer *xfer;
989 DPRINTF("Cannot find endpoint\n");
991 * Pretend that the clear or set stall request is
992 * successful else some USB host stacks can do
993 * strange things, especially when a control endpoint
998 et = (ep->edesc->bmAttributes & UE_XFERTYPE);
1000 if ((et != UE_BULK) &&
1001 (et != UE_INTERRUPT)) {
1003 * Should not stall control
1004 * nor isochronous endpoints.
1006 DPRINTF("Invalid endpoint\n");
1009 USB_BUS_LOCK(udev->bus);
1011 /* store current stall state */
1012 was_stalled = ep->is_stalled;
1014 /* check for no change */
1015 if (was_stalled && do_stall) {
1016 /* if the endpoint is already stalled do nothing */
1017 USB_BUS_UNLOCK(udev->bus);
1018 DPRINTF("No change\n");
1021 /* set stalled state */
1024 if (do_stall || (!was_stalled)) {
1026 /* lookup the current USB transfer, if any */
1027 xfer = ep->endpoint_q.curr;
1033 * If "xfer" is non-NULL the "set_stall" method will
1034 * complete the USB transfer like in case of a timeout
1035 * setting the error code "USB_ERR_STALLED".
1037 (udev->bus->methods->set_stall) (udev, xfer, ep, &do_stall);
1040 ep->toggle_next = 0; /* reset data toggle */
1041 ep->is_stalled = 0; /* clear stalled state */
1043 (udev->bus->methods->clear_stall) (udev, ep);
1045 /* start up the current or next transfer, if any */
1046 usb_command_wrapper(&ep->endpoint_q, ep->endpoint_q.curr);
1048 USB_BUS_UNLOCK(udev->bus);
1052 /*------------------------------------------------------------------------*
1053 * usb_reset_iface_endpoints - used in USB device side mode
1054 *------------------------------------------------------------------------*/
1056 usb_reset_iface_endpoints(struct usb_device *udev, uint8_t iface_index)
1058 struct usb_endpoint *ep;
1059 struct usb_endpoint *ep_end;
1061 ep = udev->endpoints;
1062 ep_end = udev->endpoints + udev->endpoints_max;
1064 for (; ep != ep_end; ep++) {
1066 if ((ep->edesc == NULL) ||
1067 (ep->iface_index != iface_index)) {
1070 /* simulate a clear stall from the peer */
1071 usbd_set_endpoint_stall(udev, ep, 0);
1076 /*------------------------------------------------------------------------*
1077 * usb_detach_device_sub
1079 * This function will try to detach an USB device. If it fails a panic
1082 * Flag values, see "USB_UNCFG_FLAG_XXX".
1083 *------------------------------------------------------------------------*/
1085 usb_detach_device_sub(struct usb_device *udev, device_t *ppdev,
1086 char **ppnpinfo, uint8_t flag)
1095 * NOTE: It is important to clear "*ppdev" before deleting
1096 * the child due to some device methods being called late
1097 * during the delete process !
1102 device_printf(dev, "at %s, port %d, addr %d "
1104 device_get_nameunit(udev->parent_dev),
1105 udev->port_no, udev->address);
1108 if (device_is_attached(dev)) {
1109 if (udev->flags.peer_suspended) {
1110 err = DEVICE_RESUME(dev);
1112 device_printf(dev, "Resume failed\n");
1115 if (device_detach(dev)) {
1119 if (device_delete_child(udev->parent_dev, dev)) {
1124 pnpinfo = *ppnpinfo;
1125 if (pnpinfo != NULL) {
1127 free(pnpinfo, M_USBDEV);
1132 /* Detach is not allowed to fail in the USB world */
1133 panic("usb_detach_device_sub: A USB driver would not detach\n");
1136 /*------------------------------------------------------------------------*
1139 * The following function will detach the matching interfaces.
1140 * This function is NULL safe.
1142 * Flag values, see "USB_UNCFG_FLAG_XXX".
1143 *------------------------------------------------------------------------*/
1145 usb_detach_device(struct usb_device *udev, uint8_t iface_index,
1148 struct usb_interface *iface;
1155 DPRINTFN(4, "udev=%p\n", udev);
1157 sx_assert(&udev->enum_sx, SA_LOCKED);
1159 /* wait for pending refs to go away */
1160 usb_wait_pending_ref_locked(udev);
1163 * First detach the child to give the child's detach routine a
1164 * chance to detach the sub-devices in the correct order.
1165 * Then delete the child using "device_delete_child()" which
1166 * will detach all sub-devices from the bottom and upwards!
1168 if (iface_index != USB_IFACE_INDEX_ANY) {
1170 iface_index = i + 1;
1173 iface_index = USB_IFACE_MAX;
1178 for (; i != iface_index; i++) {
1180 iface = usbd_get_iface(udev, i);
1181 if (iface == NULL) {
1182 /* looks like the end of the USB interfaces */
1185 usb_detach_device_sub(udev, &iface->subdev,
1186 &iface->pnpinfo, flag);
1189 usb_ref_restore_locked(udev);
1192 /*------------------------------------------------------------------------*
1193 * usb_probe_and_attach_sub
1198 *------------------------------------------------------------------------*/
1200 usb_probe_and_attach_sub(struct usb_device *udev,
1201 struct usb_attach_arg *uaa)
1203 struct usb_interface *iface;
1208 if (iface->parent_iface_index != USB_IFACE_INDEX_ANY) {
1209 /* leave interface alone */
1212 dev = iface->subdev;
1215 /* clean up after module unload */
1217 if (device_is_attached(dev)) {
1218 /* already a device there */
1221 /* clear "iface->subdev" as early as possible */
1223 iface->subdev = NULL;
1225 if (device_delete_child(udev->parent_dev, dev)) {
1228 * Panic here, else one can get a double call
1229 * to device_detach(). USB devices should
1230 * never fail on detach!
1232 panic("device_delete_child() failed\n");
1235 if (uaa->temp_dev == NULL) {
1237 /* create a new child */
1238 uaa->temp_dev = device_add_child(udev->parent_dev, NULL, -1);
1239 if (uaa->temp_dev == NULL) {
1240 device_printf(udev->parent_dev,
1241 "Device creation failed\n");
1242 return (1); /* failure */
1244 device_set_ivars(uaa->temp_dev, uaa);
1245 device_quiet(uaa->temp_dev);
1248 * Set "subdev" before probe and attach so that "devd" gets
1249 * the information it needs.
1251 iface->subdev = uaa->temp_dev;
1253 if (device_probe_and_attach(iface->subdev) == 0) {
1255 * The USB attach arguments are only available during probe
1258 uaa->temp_dev = NULL;
1259 device_set_ivars(iface->subdev, NULL);
1261 if (udev->flags.peer_suspended) {
1262 err = DEVICE_SUSPEND(iface->subdev);
1264 device_printf(iface->subdev, "Suspend failed\n");
1266 return (0); /* success */
1268 /* No USB driver found */
1269 iface->subdev = NULL;
1271 return (1); /* failure */
1274 /*------------------------------------------------------------------------*
1275 * usbd_set_parent_iface
1277 * Using this function will lock the alternate interface setting on an
1278 * interface. It is typically used for multi interface drivers. In USB
1279 * device side mode it is assumed that the alternate interfaces all
1280 * have the same endpoint descriptors. The default parent index value
1281 * is "USB_IFACE_INDEX_ANY". Then the alternate setting value is not
1283 *------------------------------------------------------------------------*/
1285 usbd_set_parent_iface(struct usb_device *udev, uint8_t iface_index,
1286 uint8_t parent_index)
1288 struct usb_interface *iface;
1294 iface = usbd_get_iface(udev, iface_index);
1296 iface->parent_iface_index = parent_index;
1300 usb_init_attach_arg(struct usb_device *udev,
1301 struct usb_attach_arg *uaa)
1303 memset(uaa, 0, sizeof(*uaa));
1306 uaa->usb_mode = udev->flags.usb_mode;
1307 uaa->port = udev->port_no;
1308 uaa->dev_state = UAA_DEV_READY;
1310 uaa->info.idVendor = UGETW(udev->ddesc.idVendor);
1311 uaa->info.idProduct = UGETW(udev->ddesc.idProduct);
1312 uaa->info.bcdDevice = UGETW(udev->ddesc.bcdDevice);
1313 uaa->info.bDeviceClass = udev->ddesc.bDeviceClass;
1314 uaa->info.bDeviceSubClass = udev->ddesc.bDeviceSubClass;
1315 uaa->info.bDeviceProtocol = udev->ddesc.bDeviceProtocol;
1316 uaa->info.bConfigIndex = udev->curr_config_index;
1317 uaa->info.bConfigNum = udev->curr_config_no;
1320 /*------------------------------------------------------------------------*
1321 * usb_probe_and_attach
1323 * This function is called from "uhub_explore_sub()",
1324 * "usb_handle_set_config()" and "usb_handle_request()".
1328 * Else: A control transfer failed
1329 *------------------------------------------------------------------------*/
1331 usb_probe_and_attach(struct usb_device *udev, uint8_t iface_index)
1333 struct usb_attach_arg uaa;
1334 struct usb_interface *iface;
1340 DPRINTF("udev == NULL\n");
1341 return (USB_ERR_INVAL);
1343 /* Prevent re-enumeration */
1344 do_unlock = usbd_enum_lock(udev);
1346 if (udev->curr_config_index == USB_UNCONFIG_INDEX) {
1347 /* do nothing - no configuration has been set */
1350 /* setup USB attach arguments */
1352 usb_init_attach_arg(udev, &uaa);
1355 * If the whole USB device is targeted, invoke the USB event
1358 if (iface_index == USB_IFACE_INDEX_ANY) {
1360 EVENTHANDLER_INVOKE(usb_dev_configured, udev, &uaa);
1362 if (uaa.dev_state != UAA_DEV_READY) {
1363 /* leave device unconfigured */
1364 usb_unconfigure(udev, 0);
1369 /* Check if only one interface should be probed: */
1370 if (iface_index != USB_IFACE_INDEX_ANY) {
1378 /* Do the probe and attach */
1379 for (; i != j; i++) {
1381 iface = usbd_get_iface(udev, i);
1382 if (iface == NULL) {
1384 * Looks like the end of the USB
1387 DPRINTFN(2, "end of interfaces "
1391 if (iface->idesc == NULL) {
1392 /* no interface descriptor */
1397 uaa.info.bInterfaceClass =
1398 iface->idesc->bInterfaceClass;
1399 uaa.info.bInterfaceSubClass =
1400 iface->idesc->bInterfaceSubClass;
1401 uaa.info.bInterfaceProtocol =
1402 iface->idesc->bInterfaceProtocol;
1403 uaa.info.bIfaceIndex = i;
1404 uaa.info.bIfaceNum =
1405 iface->idesc->bInterfaceNumber;
1406 uaa.driver_info = 0; /* reset driver_info */
1408 DPRINTFN(2, "iclass=%u/%u/%u iindex=%u/%u\n",
1409 uaa.info.bInterfaceClass,
1410 uaa.info.bInterfaceSubClass,
1411 uaa.info.bInterfaceProtocol,
1412 uaa.info.bIfaceIndex,
1413 uaa.info.bIfaceNum);
1415 usb_probe_and_attach_sub(udev, &uaa);
1418 * Remove the leftover child, if any, to enforce that
1419 * a new nomatch devd event is generated for the next
1420 * interface if no driver is found:
1422 if (uaa.temp_dev == NULL)
1424 if (device_delete_child(udev->parent_dev, uaa.temp_dev))
1425 DPRINTFN(0, "device delete child failed\n");
1426 uaa.temp_dev = NULL;
1430 usbd_enum_unlock(udev);
1434 /*------------------------------------------------------------------------*
1435 * usb_suspend_resume_sub
1437 * This function is called when the suspend or resume methods should
1438 * be executed on an USB device.
1439 *------------------------------------------------------------------------*/
1441 usb_suspend_resume_sub(struct usb_device *udev, device_t dev, uint8_t do_suspend)
1448 if (!device_is_attached(dev)) {
1452 err = DEVICE_SUSPEND(dev);
1454 err = DEVICE_RESUME(dev);
1457 device_printf(dev, "%s failed\n",
1458 do_suspend ? "Suspend" : "Resume");
1462 /*------------------------------------------------------------------------*
1463 * usb_suspend_resume
1465 * The following function will suspend or resume the USB device.
1470 *------------------------------------------------------------------------*/
1472 usb_suspend_resume(struct usb_device *udev, uint8_t do_suspend)
1474 struct usb_interface *iface;
1481 DPRINTFN(4, "udev=%p do_suspend=%d\n", udev, do_suspend);
1483 sx_assert(&udev->sr_sx, SA_LOCKED);
1485 USB_BUS_LOCK(udev->bus);
1486 /* filter the suspend events */
1487 if (udev->flags.peer_suspended == do_suspend) {
1488 USB_BUS_UNLOCK(udev->bus);
1492 udev->flags.peer_suspended = do_suspend;
1493 USB_BUS_UNLOCK(udev->bus);
1495 /* do the suspend or resume */
1497 for (i = 0; i != USB_IFACE_MAX; i++) {
1499 iface = usbd_get_iface(udev, i);
1500 if (iface == NULL) {
1501 /* looks like the end of the USB interfaces */
1504 usb_suspend_resume_sub(udev, iface->subdev, do_suspend);
1509 /*------------------------------------------------------------------------*
1510 * usbd_clear_stall_proc
1512 * This function performs generic USB clear stall operations.
1513 *------------------------------------------------------------------------*/
1515 usbd_clear_stall_proc(struct usb_proc_msg *_pm)
1517 struct usb_udev_msg *pm = (void *)_pm;
1518 struct usb_device *udev = pm->udev;
1521 USB_BUS_UNLOCK(udev->bus);
1522 mtx_lock(&udev->device_mtx);
1524 /* Start clear stall callback */
1525 usbd_transfer_start(udev->ctrl_xfer[1]);
1528 mtx_unlock(&udev->device_mtx);
1529 USB_BUS_LOCK(udev->bus);
1532 /*------------------------------------------------------------------------*
1535 * This function allocates a new USB device. This function is called
1536 * when a new device has been put in the powered state, but not yet in
1537 * the addressed state. Get initial descriptor, set the address, get
1538 * full descriptor and get strings.
1543 *------------------------------------------------------------------------*/
1545 usb_alloc_device(device_t parent_dev, struct usb_bus *bus,
1546 struct usb_device *parent_hub, uint8_t depth, uint8_t port_index,
1547 uint8_t port_no, enum usb_dev_speed speed, enum usb_hc_mode mode)
1549 struct usb_attach_arg uaa;
1550 struct usb_device *udev;
1551 struct usb_device *adev;
1552 struct usb_device *hub;
1553 uint8_t *scratch_ptr;
1555 uint8_t device_index;
1556 uint8_t config_index;
1557 uint8_t config_quirk;
1558 uint8_t set_config_failed;
1561 DPRINTF("parent_dev=%p, bus=%p, parent_hub=%p, depth=%u, "
1562 "port_index=%u, port_no=%u, speed=%u, usb_mode=%u\n",
1563 parent_dev, bus, parent_hub, depth, port_index, port_no,
1567 * Find an unused device index. In USB Host mode this is the
1568 * same as the device address.
1570 * Device index zero is not used and device index 1 should
1571 * always be the root hub.
1573 for (device_index = USB_ROOT_HUB_ADDR;
1574 (device_index != bus->devices_max) &&
1575 (bus->devices[device_index] != NULL);
1576 device_index++) /* nop */;
1578 if (device_index == bus->devices_max) {
1579 device_printf(bus->bdev,
1580 "No free USB device index for new device\n");
1585 device_printf(bus->bdev,
1586 "Invalid device depth\n");
1589 udev = malloc(sizeof(*udev), M_USB, M_WAITOK | M_ZERO);
1593 /* initialise our SX-lock */
1594 sx_init_flags(&udev->enum_sx, "USB config SX lock", SX_DUPOK);
1595 sx_init_flags(&udev->sr_sx, "USB suspend and resume SX lock", SX_NOWITNESS);
1597 cv_init(&udev->ctrlreq_cv, "WCTRL");
1598 cv_init(&udev->ref_cv, "UGONE");
1600 /* initialise our mutex */
1601 mtx_init(&udev->device_mtx, "USB device mutex", NULL, MTX_DEF);
1603 /* initialise generic clear stall */
1604 udev->cs_msg[0].hdr.pm_callback = &usbd_clear_stall_proc;
1605 udev->cs_msg[0].udev = udev;
1606 udev->cs_msg[1].hdr.pm_callback = &usbd_clear_stall_proc;
1607 udev->cs_msg[1].udev = udev;
1609 /* initialise some USB device fields */
1610 udev->parent_hub = parent_hub;
1611 udev->parent_dev = parent_dev;
1612 udev->port_index = port_index;
1613 udev->port_no = port_no;
1614 udev->depth = depth;
1616 udev->address = USB_START_ADDR; /* default value */
1617 udev->plugtime = (usb_ticks_t)ticks;
1619 * We need to force the power mode to "on" because there are plenty
1620 * of USB devices out there that do not work very well with
1621 * automatic suspend and resume!
1623 udev->power_mode = usbd_filter_power_mode(udev, USB_POWER_MODE_ON);
1624 udev->pwr_save.last_xfer_time = ticks;
1625 /* we are not ready yet */
1628 /* set up default endpoint descriptor */
1629 udev->ctrl_ep_desc.bLength = sizeof(udev->ctrl_ep_desc);
1630 udev->ctrl_ep_desc.bDescriptorType = UDESC_ENDPOINT;
1631 udev->ctrl_ep_desc.bEndpointAddress = USB_CONTROL_ENDPOINT;
1632 udev->ctrl_ep_desc.bmAttributes = UE_CONTROL;
1633 udev->ctrl_ep_desc.wMaxPacketSize[0] = USB_MAX_IPACKET;
1634 udev->ctrl_ep_desc.wMaxPacketSize[1] = 0;
1635 udev->ctrl_ep_desc.bInterval = 0;
1637 /* set up default endpoint companion descriptor */
1638 udev->ctrl_ep_comp_desc.bLength = sizeof(udev->ctrl_ep_comp_desc);
1639 udev->ctrl_ep_comp_desc.bDescriptorType = UDESC_ENDPOINT_SS_COMP;
1641 udev->ddesc.bMaxPacketSize = USB_MAX_IPACKET;
1643 udev->speed = speed;
1644 udev->flags.usb_mode = mode;
1646 /* search for our High Speed USB HUB, if any */
1649 hub = udev->parent_hub;
1652 if (hub->speed == USB_SPEED_HIGH) {
1653 udev->hs_hub_addr = hub->address;
1654 udev->parent_hs_hub = hub;
1655 udev->hs_port_no = adev->port_no;
1659 hub = hub->parent_hub;
1662 /* init the default endpoint */
1663 usb_init_endpoint(udev, 0,
1664 &udev->ctrl_ep_desc,
1665 &udev->ctrl_ep_comp_desc,
1668 /* set device index */
1669 udev->device_index = device_index;
1672 /* Create ugen name */
1673 snprintf(udev->ugen_name, sizeof(udev->ugen_name),
1674 USB_GENERIC_NAME "%u.%u", device_get_unit(bus->bdev),
1676 LIST_INIT(&udev->pd_list);
1678 /* Create the control endpoint device */
1679 udev->ctrl_dev = usb_make_dev(udev, NULL, 0, 0,
1680 FREAD|FWRITE, UID_ROOT, GID_OPERATOR, 0600);
1682 /* Create a link from /dev/ugenX.X to the default endpoint */
1683 if (udev->ctrl_dev != NULL)
1684 make_dev_alias(udev->ctrl_dev->cdev, "%s", udev->ugen_name);
1686 /* Initialise device */
1687 if (bus->methods->device_init != NULL) {
1688 err = (bus->methods->device_init) (udev);
1690 DPRINTFN(0, "device init %d failed "
1691 "(%s, ignored)\n", device_index,
1696 /* set powered device state after device init is complete */
1697 usb_set_device_state(udev, USB_STATE_POWERED);
1699 if (udev->flags.usb_mode == USB_MODE_HOST) {
1701 err = usbd_req_set_address(udev, NULL, device_index);
1704 * This is the new USB device address from now on, if
1705 * the set address request didn't set it already.
1707 if (udev->address == USB_START_ADDR)
1708 udev->address = device_index;
1711 * We ignore any set-address errors, hence there are
1712 * buggy USB devices out there that actually receive
1713 * the SETUP PID, but manage to set the address before
1714 * the STATUS stage is ACK'ed. If the device responds
1715 * to the subsequent get-descriptor at the new
1716 * address, then we know that the set-address command
1720 DPRINTFN(0, "set address %d failed "
1721 "(%s, ignored)\n", udev->address,
1725 /* We are not self powered */
1726 udev->flags.self_powered = 0;
1728 /* Set unconfigured state */
1729 udev->curr_config_no = USB_UNCONFIG_NO;
1730 udev->curr_config_index = USB_UNCONFIG_INDEX;
1732 /* Setup USB descriptors */
1733 err = (usb_temp_setup_by_index_p) (udev, usb_template);
1735 DPRINTFN(0, "setting up USB template failed maybe the USB "
1736 "template module has not been loaded\n");
1740 usb_set_device_state(udev, USB_STATE_ADDRESSED);
1742 /* setup the device descriptor and the initial "wMaxPacketSize" */
1743 err = usbd_setup_device_desc(udev, NULL);
1746 /* try to enumerate two more times */
1747 err = usbd_req_re_enumerate(udev, NULL);
1749 err = usbd_req_re_enumerate(udev, NULL);
1757 * Setup temporary USB attach args so that we can figure out some
1758 * basic quirks for this device.
1760 usb_init_attach_arg(udev, &uaa);
1762 if (usb_test_quirk(&uaa, UQ_BUS_POWERED)) {
1763 udev->flags.uq_bus_powered = 1;
1765 if (usb_test_quirk(&uaa, UQ_NO_STRINGS)) {
1766 udev->flags.no_strings = 1;
1769 * Workaround for buggy USB devices.
1771 * It appears that some string-less USB chips will crash and
1772 * disappear if any attempts are made to read any string
1775 * Try to detect such chips by checking the strings in the USB
1776 * device descriptor. If no strings are present there we
1777 * simply disable all USB strings.
1780 /* Protect scratch area */
1781 do_unlock = usbd_enum_lock(udev);
1783 scratch_ptr = udev->scratch.data;
1785 if (udev->ddesc.iManufacturer ||
1786 udev->ddesc.iProduct ||
1787 udev->ddesc.iSerialNumber) {
1788 /* read out the language ID string */
1789 err = usbd_req_get_string_desc(udev, NULL,
1790 (char *)scratch_ptr, 4, 0, USB_LANGUAGE_TABLE);
1792 err = USB_ERR_INVAL;
1795 if (err || (scratch_ptr[0] < 4)) {
1796 udev->flags.no_strings = 1;
1803 /* load preferred value and mask */
1805 mask = usb_lang_mask;
1807 /* align length correctly */
1808 scratch_ptr[0] &= ~1U;
1810 /* fix compiler warning */
1813 /* search for preferred language */
1814 for (x = 2; (x < scratch_ptr[0]); x += 2) {
1815 langid = UGETW(scratch_ptr + x);
1816 if ((langid & mask) == pref)
1819 if (x >= scratch_ptr[0]) {
1820 /* pick the first language as the default */
1821 DPRINTFN(1, "Using first language\n");
1822 langid = UGETW(scratch_ptr + 2);
1825 DPRINTFN(1, "Language selected: 0x%04x\n", langid);
1826 udev->langid = langid;
1830 usbd_enum_unlock(udev);
1832 /* assume 100mA bus powered for now. Changed when configured. */
1833 udev->power = USB_MIN_POWER;
1834 /* fetch the vendor and product strings from the device */
1835 usbd_set_device_strings(udev);
1837 if (udev->flags.usb_mode == USB_MODE_DEVICE) {
1838 /* USB device mode setup is complete */
1844 * Most USB devices should attach to config index 0 by
1847 if (usb_test_quirk(&uaa, UQ_CFG_INDEX_0)) {
1850 } else if (usb_test_quirk(&uaa, UQ_CFG_INDEX_1)) {
1853 } else if (usb_test_quirk(&uaa, UQ_CFG_INDEX_2)) {
1856 } else if (usb_test_quirk(&uaa, UQ_CFG_INDEX_3)) {
1859 } else if (usb_test_quirk(&uaa, UQ_CFG_INDEX_4)) {
1867 set_config_failed = 0;
1870 DPRINTF("setting config %u\n", config_index);
1872 /* get the USB device configured */
1873 err = usbd_set_config_index(udev, config_index);
1875 if (udev->ddesc.bNumConfigurations != 0) {
1876 if (!set_config_failed) {
1877 set_config_failed = 1;
1878 /* XXX try to re-enumerate the device */
1879 err = usbd_req_re_enumerate(udev, NULL);
1881 goto repeat_set_config;
1883 DPRINTFN(0, "Failure selecting configuration index %u:"
1884 "%s, port %u, addr %u (ignored)\n",
1885 config_index, usbd_errstr(err), udev->port_no,
1889 * Some USB devices do not have any configurations. Ignore any
1890 * set config failures!
1895 if (!config_quirk && config_index + 1 < udev->ddesc.bNumConfigurations) {
1896 if ((udev->cdesc->bNumInterface < 2) &&
1897 usbd_get_no_descriptors(udev->cdesc, UDESC_ENDPOINT) == 0) {
1898 DPRINTFN(0, "Found no endpoints, trying next config\n");
1900 goto repeat_set_config;
1902 if (config_index == 0) {
1904 * Try to figure out if we have an
1905 * auto-install disk there:
1907 if (usb_iface_is_cdrom(udev, 0)) {
1908 DPRINTFN(0, "Found possible auto-install "
1909 "disk (trying next config)\n");
1911 goto repeat_set_config;
1915 if (set_config_failed == 0 && config_index == 0 &&
1916 usb_test_quirk(&uaa, UQ_MSC_NO_SYNC_CACHE) == 0 &&
1917 usb_test_quirk(&uaa, UQ_MSC_NO_GETMAXLUN) == 0) {
1920 * Try to figure out if there are any MSC quirks we
1921 * should apply automatically:
1923 err = usb_msc_auto_quirk(udev, 0);
1926 set_config_failed = 1;
1927 goto repeat_set_config;
1932 DPRINTF("new dev (addr %d), udev=%p, parent_hub=%p\n",
1933 udev->address, udev, udev->parent_hub);
1935 /* register our device - we are ready */
1936 usb_bus_port_set_device(bus, parent_hub ?
1937 parent_hub->hub->ports + port_index : NULL, udev, device_index);
1940 /* Symlink the ugen device name */
1941 udev->ugen_symlink = usb_alloc_symlink(udev->ugen_name);
1943 /* Announce device */
1944 printf("%s: <%s> at %s\n", udev->ugen_name,
1945 usb_get_manufacturer(udev),
1946 device_get_nameunit(udev->bus->bdev));
1950 usb_notify_addq("ATTACH", udev);
1955 * Free USB device and all subdevices, if any.
1957 usb_free_device(udev, 0);
1964 struct usb_fs_privdata *
1965 usb_make_dev(struct usb_device *udev, const char *devname, int ep,
1966 int fi, int rwmode, uid_t uid, gid_t gid, int mode)
1968 struct usb_fs_privdata* pd;
1971 /* Store information to locate ourselves again later */
1972 pd = malloc(sizeof(struct usb_fs_privdata), M_USBDEV,
1974 pd->bus_index = device_get_unit(udev->bus->bdev);
1975 pd->dev_index = udev->device_index;
1977 pd->fifo_index = fi;
1980 /* Now, create the device itself */
1981 if (devname == NULL) {
1983 snprintf(buffer, sizeof(buffer), USB_DEVICE_DIR "/%u.%u.%u",
1984 pd->bus_index, pd->dev_index, pd->ep_addr);
1987 pd->cdev = make_dev(&usb_devsw, 0, uid, gid, mode, "%s", devname);
1989 if (pd->cdev == NULL) {
1990 DPRINTFN(0, "Failed to create device %s\n", devname);
1995 /* XXX setting si_drv1 and creating the device is not atomic! */
1996 pd->cdev->si_drv1 = pd;
2002 usb_destroy_dev(struct usb_fs_privdata *pd)
2007 destroy_dev(pd->cdev);
2013 usb_cdev_create(struct usb_device *udev)
2015 struct usb_config_descriptor *cd;
2016 struct usb_endpoint_descriptor *ed;
2017 struct usb_descriptor *desc;
2018 struct usb_fs_privdata* pd;
2019 int inmode, outmode, inmask, outmask, mode;
2022 KASSERT(LIST_FIRST(&udev->pd_list) == NULL, ("stale cdev entries"));
2024 DPRINTFN(2, "Creating device nodes\n");
2026 if (usbd_get_mode(udev) == USB_MODE_DEVICE) {
2029 } else { /* USB_MODE_HOST */
2039 * Collect all used endpoint numbers instead of just
2040 * generating 16 static endpoints.
2042 cd = usbd_get_config_descriptor(udev);
2043 while ((desc = usb_desc_foreach(cd, desc))) {
2044 /* filter out all endpoint descriptors */
2045 if ((desc->bDescriptorType == UDESC_ENDPOINT) &&
2046 (desc->bLength >= sizeof(*ed))) {
2047 ed = (struct usb_endpoint_descriptor *)desc;
2050 ep = ed->bEndpointAddress;
2051 if (UE_GET_DIR(ep) == UE_DIR_OUT)
2052 outmask |= 1 << UE_GET_ADDR(ep);
2054 inmask |= 1 << UE_GET_ADDR(ep);
2058 /* Create all available endpoints except EP0 */
2059 for (ep = 1; ep < 16; ep++) {
2060 mode = (inmask & (1 << ep)) ? inmode : 0;
2061 mode |= (outmask & (1 << ep)) ? outmode : 0;
2063 continue; /* no IN or OUT endpoint */
2065 pd = usb_make_dev(udev, NULL, ep, 0,
2066 mode, UID_ROOT, GID_OPERATOR, 0600);
2069 LIST_INSERT_HEAD(&udev->pd_list, pd, pd_next);
2074 usb_cdev_free(struct usb_device *udev)
2076 struct usb_fs_privdata* pd;
2078 DPRINTFN(2, "Freeing device nodes\n");
2080 while ((pd = LIST_FIRST(&udev->pd_list)) != NULL) {
2081 KASSERT(pd->cdev->si_drv1 == pd, ("privdata corrupt"));
2083 LIST_REMOVE(pd, pd_next);
2085 usb_destroy_dev(pd);
2090 /*------------------------------------------------------------------------*
2093 * This function is NULL safe and will free an USB device and its
2094 * children devices, if any.
2096 * Flag values: Reserved, set to zero.
2097 *------------------------------------------------------------------------*/
2099 usb_free_device(struct usb_device *udev, uint8_t flag)
2101 struct usb_bus *bus;
2104 return; /* already freed */
2106 DPRINTFN(4, "udev=%p port=%d\n", udev, udev->port_no);
2110 /* set DETACHED state to prevent any further references */
2111 usb_set_device_state(udev, USB_STATE_DETACHED);
2114 usb_notify_addq("DETACH", udev);
2119 printf("%s: <%s> at %s (disconnected)\n", udev->ugen_name,
2120 usb_get_manufacturer(udev), device_get_nameunit(bus->bdev));
2123 /* Destroy UGEN symlink, if any */
2124 if (udev->ugen_symlink) {
2125 usb_free_symlink(udev->ugen_symlink);
2126 udev->ugen_symlink = NULL;
2129 usb_destroy_dev(udev->ctrl_dev);
2132 if (udev->flags.usb_mode == USB_MODE_DEVICE) {
2133 /* stop receiving any control transfers (Device Side Mode) */
2134 usbd_transfer_unsetup(udev->ctrl_xfer, USB_CTRL_XFER_MAX);
2137 /* the following will get the device unconfigured in software */
2138 usb_unconfigure(udev, USB_UNCFG_FLAG_FREE_EP0);
2140 /* final device unregister after all character devices are closed */
2141 usb_bus_port_set_device(bus, udev->parent_hub ?
2142 udev->parent_hub->hub->ports + udev->port_index : NULL,
2143 NULL, USB_ROOT_HUB_ADDR);
2145 /* unsetup any leftover default USB transfers */
2146 usbd_transfer_unsetup(udev->ctrl_xfer, USB_CTRL_XFER_MAX);
2148 /* template unsetup, if any */
2149 (usb_temp_unsetup_p) (udev);
2152 * Make sure that our clear-stall messages are not queued
2155 USB_BUS_LOCK(udev->bus);
2156 usb_proc_mwait(&udev->bus->non_giant_callback_proc,
2157 &udev->cs_msg[0], &udev->cs_msg[1]);
2158 USB_BUS_UNLOCK(udev->bus);
2160 sx_destroy(&udev->enum_sx);
2161 sx_destroy(&udev->sr_sx);
2163 cv_destroy(&udev->ctrlreq_cv);
2164 cv_destroy(&udev->ref_cv);
2166 mtx_destroy(&udev->device_mtx);
2168 KASSERT(LIST_FIRST(&udev->pd_list) == NULL, ("leaked cdev entries"));
2171 /* Uninitialise device */
2172 if (bus->methods->device_uninit != NULL)
2173 (bus->methods->device_uninit) (udev);
2176 free(udev->serial, M_USB);
2177 free(udev->manufacturer, M_USB);
2178 free(udev->product, M_USB);
2182 /*------------------------------------------------------------------------*
2185 * This function is the safe way to get the USB interface structure
2186 * pointer by interface index.
2189 * NULL: Interface not present.
2190 * Else: Pointer to USB interface structure.
2191 *------------------------------------------------------------------------*/
2192 struct usb_interface *
2193 usbd_get_iface(struct usb_device *udev, uint8_t iface_index)
2195 struct usb_interface *iface = udev->ifaces + iface_index;
2197 if (iface_index >= udev->ifaces_max)
2202 /*------------------------------------------------------------------------*
2203 * usbd_find_descriptor
2205 * This function will lookup the first descriptor that matches the
2206 * criteria given by the arguments "type" and "subtype". Descriptors
2207 * will only be searched within the interface having the index
2208 * "iface_index". If the "id" argument points to an USB descriptor,
2209 * it will be skipped before the search is started. This allows
2210 * searching for multiple descriptors using the same criteria. Else
2211 * the search is started after the interface descriptor.
2214 * NULL: End of descriptors
2215 * Else: A descriptor matching the criteria
2216 *------------------------------------------------------------------------*/
2218 usbd_find_descriptor(struct usb_device *udev, void *id, uint8_t iface_index,
2219 uint8_t type, uint8_t type_mask,
2220 uint8_t subtype, uint8_t subtype_mask)
2222 struct usb_descriptor *desc;
2223 struct usb_config_descriptor *cd;
2224 struct usb_interface *iface;
2226 cd = usbd_get_config_descriptor(udev);
2231 iface = usbd_get_iface(udev, iface_index);
2232 if (iface == NULL) {
2235 id = usbd_get_interface_descriptor(iface);
2242 while ((desc = usb_desc_foreach(cd, desc))) {
2244 if (desc->bDescriptorType == UDESC_INTERFACE) {
2247 if (((desc->bDescriptorType & type_mask) == type) &&
2248 ((desc->bDescriptorSubtype & subtype_mask) == subtype)) {
2255 /*------------------------------------------------------------------------*
2258 * This function will dump information from the device descriptor
2259 * belonging to the USB device pointed to by "udev", to the string
2260 * pointed to by "dst_ptr" having a maximum length of "dst_len" bytes
2261 * including the terminating zero.
2262 *------------------------------------------------------------------------*/
2264 usb_devinfo(struct usb_device *udev, char *dst_ptr, uint16_t dst_len)
2266 struct usb_device_descriptor *udd = &udev->ddesc;
2270 bcdUSB = UGETW(udd->bcdUSB);
2271 bcdDevice = UGETW(udd->bcdDevice);
2273 if (udd->bDeviceClass != 0xFF) {
2274 snprintf(dst_ptr, dst_len, "%s %s, class %d/%d, rev %x.%02x/"
2276 usb_get_manufacturer(udev),
2277 usb_get_product(udev),
2278 udd->bDeviceClass, udd->bDeviceSubClass,
2279 (bcdUSB >> 8), bcdUSB & 0xFF,
2280 (bcdDevice >> 8), bcdDevice & 0xFF,
2283 snprintf(dst_ptr, dst_len, "%s %s, rev %x.%02x/"
2285 usb_get_manufacturer(udev),
2286 usb_get_product(udev),
2287 (bcdUSB >> 8), bcdUSB & 0xFF,
2288 (bcdDevice >> 8), bcdDevice & 0xFF,
2295 * Descriptions of of known vendors and devices ("products").
2297 struct usb_knowndev {
2301 const char *vendorname;
2302 const char *productname;
2305 #define USB_KNOWNDEV_NOPROD 0x01 /* match on vendor only */
2307 #include "usbdevs.h"
2308 #include "usbdevs_data.h"
2309 #endif /* USB_VERBOSE */
2312 usbd_set_device_strings(struct usb_device *udev)
2314 struct usb_device_descriptor *udd = &udev->ddesc;
2316 const struct usb_knowndev *kdp;
2321 uint16_t product_id;
2324 /* Protect scratch area */
2325 do_unlock = usbd_enum_lock(udev);
2327 temp_ptr = (char *)udev->scratch.data;
2328 temp_size = sizeof(udev->scratch.data);
2330 vendor_id = UGETW(udd->idVendor);
2331 product_id = UGETW(udd->idProduct);
2333 /* get serial number string */
2334 usbd_req_get_string_any(udev, NULL, temp_ptr, temp_size,
2335 udev->ddesc.iSerialNumber);
2336 udev->serial = strdup(temp_ptr, M_USB);
2338 /* get manufacturer string */
2339 usbd_req_get_string_any(udev, NULL, temp_ptr, temp_size,
2340 udev->ddesc.iManufacturer);
2341 usb_trim_spaces(temp_ptr);
2342 if (temp_ptr[0] != '\0')
2343 udev->manufacturer = strdup(temp_ptr, M_USB);
2345 /* get product string */
2346 usbd_req_get_string_any(udev, NULL, temp_ptr, temp_size,
2347 udev->ddesc.iProduct);
2348 usb_trim_spaces(temp_ptr);
2349 if (temp_ptr[0] != '\0')
2350 udev->product = strdup(temp_ptr, M_USB);
2353 if (udev->manufacturer == NULL || udev->product == NULL) {
2354 for (kdp = usb_knowndevs; kdp->vendorname != NULL; kdp++) {
2355 if (kdp->vendor == vendor_id &&
2356 (kdp->product == product_id ||
2357 (kdp->flags & USB_KNOWNDEV_NOPROD) != 0))
2360 if (kdp->vendorname != NULL) {
2361 /* XXX should use pointer to knowndevs string */
2362 if (udev->manufacturer == NULL) {
2363 udev->manufacturer = strdup(kdp->vendorname,
2366 if (udev->product == NULL &&
2367 (kdp->flags & USB_KNOWNDEV_NOPROD) == 0) {
2368 udev->product = strdup(kdp->productname,
2374 /* Provide default strings if none were found */
2375 if (udev->manufacturer == NULL) {
2376 snprintf(temp_ptr, temp_size, "vendor 0x%04x", vendor_id);
2377 udev->manufacturer = strdup(temp_ptr, M_USB);
2379 if (udev->product == NULL) {
2380 snprintf(temp_ptr, temp_size, "product 0x%04x", product_id);
2381 udev->product = strdup(temp_ptr, M_USB);
2385 usbd_enum_unlock(udev);
2393 usbd_get_mode(struct usb_device *udev)
2395 return (udev->flags.usb_mode);
2400 * See: USB_SPEED_XXX
2403 usbd_get_speed(struct usb_device *udev)
2405 return (udev->speed);
2409 usbd_get_isoc_fps(struct usb_device *udev)
2412 switch (udev->speed) {
2414 case USB_SPEED_FULL:
2421 struct usb_device_descriptor *
2422 usbd_get_device_descriptor(struct usb_device *udev)
2425 return (NULL); /* be NULL safe */
2426 return (&udev->ddesc);
2429 struct usb_config_descriptor *
2430 usbd_get_config_descriptor(struct usb_device *udev)
2433 return (NULL); /* be NULL safe */
2434 return (udev->cdesc);
2437 /*------------------------------------------------------------------------*
2438 * usb_test_quirk - test a device for a given quirk
2441 * 0: The USB device does not have the given quirk.
2442 * Else: The USB device has the given quirk.
2443 *------------------------------------------------------------------------*/
2445 usb_test_quirk(const struct usb_attach_arg *uaa, uint16_t quirk)
2450 if (quirk == UQ_NONE)
2453 /* search the automatic per device quirks first */
2455 for (x = 0; x != USB_MAX_AUTO_QUIRK; x++) {
2456 if (uaa->device->autoQuirk[x] == quirk)
2460 /* search global quirk table, if any */
2462 found = (usb_test_quirk_p) (&uaa->info, quirk);
2467 struct usb_interface_descriptor *
2468 usbd_get_interface_descriptor(struct usb_interface *iface)
2471 return (NULL); /* be NULL safe */
2472 return (iface->idesc);
2476 usbd_get_interface_altindex(struct usb_interface *iface)
2478 return (iface->alt_index);
2482 usbd_get_bus_index(struct usb_device *udev)
2484 return ((uint8_t)device_get_unit(udev->bus->bdev));
2488 usbd_get_device_index(struct usb_device *udev)
2490 return (udev->device_index);
2495 usb_notify_addq(const char *type, struct usb_device *udev)
2497 struct usb_interface *iface;
2501 /* announce the device */
2502 sb = sbuf_new_auto();
2511 "devsubclass=0x%02x "
2524 UGETW(udev->ddesc.idVendor),
2525 UGETW(udev->ddesc.idProduct),
2526 udev->ddesc.bDeviceClass,
2527 udev->ddesc.bDeviceSubClass,
2528 usb_get_serial(udev),
2529 UGETW(udev->ddesc.bcdDevice),
2530 (udev->flags.usb_mode == USB_MODE_HOST) ? "host" : "device",
2533 , udev->parent_hub != NULL ?
2534 udev->parent_hub->ugen_name :
2535 device_get_nameunit(device_get_parent(udev->bus->bdev))
2539 devctl_notify("USB", "DEVICE", type, sbuf_data(sb));
2542 /* announce each interface */
2543 for (i = 0; i < USB_IFACE_MAX; i++) {
2544 iface = usbd_get_iface(udev, i);
2546 break; /* end of interfaces */
2547 if (iface->idesc == NULL)
2548 continue; /* no interface descriptor */
2550 sb = sbuf_new_auto();
2559 "devsubclass=0x%02x "
2566 "intsubclass=0x%02x "
2567 "intprotocol=0x%02x",
2572 UGETW(udev->ddesc.idVendor),
2573 UGETW(udev->ddesc.idProduct),
2574 udev->ddesc.bDeviceClass,
2575 udev->ddesc.bDeviceSubClass,
2576 usb_get_serial(udev),
2577 UGETW(udev->ddesc.bcdDevice),
2578 (udev->flags.usb_mode == USB_MODE_HOST) ? "host" : "device",
2579 iface->idesc->bInterfaceNumber,
2580 iface->idesc->bNumEndpoints,
2581 iface->idesc->bInterfaceClass,
2582 iface->idesc->bInterfaceSubClass,
2583 iface->idesc->bInterfaceProtocol);
2585 devctl_notify("USB", "INTERFACE", type, sbuf_data(sb));
2592 /*------------------------------------------------------------------------*
2593 * usb_fifo_free_wrap
2595 * This function will free the FIFOs.
2597 * Description of "flag" argument: If the USB_UNCFG_FLAG_FREE_EP0 flag
2598 * is set and "iface_index" is set to "USB_IFACE_INDEX_ANY", we free
2599 * all FIFOs. If the USB_UNCFG_FLAG_FREE_EP0 flag is not set and
2600 * "iface_index" is set to "USB_IFACE_INDEX_ANY", we free all non
2601 * control endpoint FIFOs. If "iface_index" is not set to
2602 * "USB_IFACE_INDEX_ANY" the flag has no effect.
2603 *------------------------------------------------------------------------*/
2605 usb_fifo_free_wrap(struct usb_device *udev,
2606 uint8_t iface_index, uint8_t flag)
2612 * Free any USB FIFOs on the given interface:
2614 for (i = 0; i != USB_FIFO_MAX; i++) {
2619 /* Check if the interface index matches */
2620 if (iface_index == f->iface_index) {
2621 if (f->methods != &usb_ugen_methods) {
2623 * Don't free any non-generic FIFOs in
2628 if ((f->dev_ep_index == 0) &&
2629 (f->fs_xfer == NULL)) {
2630 /* no need to free this FIFO */
2633 } else if (iface_index == USB_IFACE_INDEX_ANY) {
2634 if ((f->methods == &usb_ugen_methods) &&
2635 (f->dev_ep_index == 0) &&
2636 (!(flag & USB_UNCFG_FLAG_FREE_EP0)) &&
2637 (f->fs_xfer == NULL)) {
2638 /* no need to free this FIFO */
2642 /* no need to free this FIFO */
2645 /* wait for pending refs to go away */
2646 usb_wait_pending_ref_locked(udev);
2648 /* free this FIFO */
2651 /* restore refcount */
2652 usb_ref_restore_locked(udev);
2657 /*------------------------------------------------------------------------*
2658 * usb_peer_can_wakeup
2661 * 0: Peer cannot do resume signalling.
2662 * Else: Peer can do resume signalling.
2663 *------------------------------------------------------------------------*/
2665 usb_peer_can_wakeup(struct usb_device *udev)
2667 const struct usb_config_descriptor *cdp;
2670 if ((cdp != NULL) && (udev->flags.usb_mode == USB_MODE_HOST)) {
2671 return (cdp->bmAttributes & UC_REMOTE_WAKEUP);
2673 return (0); /* not supported */
2677 usb_set_device_state(struct usb_device *udev, enum usb_dev_state state)
2680 KASSERT(state < USB_STATE_MAX, ("invalid udev state"));
2682 DPRINTF("udev %p state %s -> %s\n", udev,
2683 usb_statestr(udev->state), usb_statestr(state));
2686 mtx_lock(&usb_ref_lock);
2688 udev->state = state;
2690 mtx_unlock(&usb_ref_lock);
2692 if (udev->bus->methods->device_state_change != NULL)
2693 (udev->bus->methods->device_state_change) (udev);
2697 usb_get_device_state(struct usb_device *udev)
2700 return (USB_STATE_DETACHED);
2701 return (udev->state);
2705 usbd_device_attached(struct usb_device *udev)
2707 return (udev->state > USB_STATE_DETACHED);
2711 * The following function locks enumerating the given USB device. If
2712 * the lock is already grabbed this function returns zero. Else a
2713 * non-zero value is returned.
2716 usbd_enum_lock(struct usb_device *udev)
2718 if (sx_xlocked(&udev->enum_sx))
2721 sx_xlock(&udev->enum_sx);
2722 sx_xlock(&udev->sr_sx);
2724 * NEWBUS LOCK NOTE: We should check if any parent SX locks
2725 * are locked before locking Giant. Else the lock can be
2726 * locked multiple times.
2732 /* The following function unlocks enumerating the given USB device. */
2735 usbd_enum_unlock(struct usb_device *udev)
2738 sx_xunlock(&udev->enum_sx);
2739 sx_xunlock(&udev->sr_sx);
2742 /* The following function locks suspend and resume. */
2745 usbd_sr_lock(struct usb_device *udev)
2747 sx_xlock(&udev->sr_sx);
2749 * NEWBUS LOCK NOTE: We should check if any parent SX locks
2750 * are locked before locking Giant. Else the lock can be
2751 * locked multiple times.
2756 /* The following function unlocks suspend and resume. */
2759 usbd_sr_unlock(struct usb_device *udev)
2762 sx_xunlock(&udev->sr_sx);
2766 * The following function checks the enumerating lock for the given
2771 usbd_enum_is_locked(struct usb_device *udev)
2773 return (sx_xlocked(&udev->enum_sx));
2777 * The following function is used to set the per-interface specific
2778 * plug and play information. The string referred to by the pnpinfo
2779 * argument can safely be freed after calling this function. The
2780 * pnpinfo of an interface will be reset at device detach or when
2781 * passing a NULL argument to this function. This function
2782 * returns zero on success, else a USB_ERR_XXX failure code.
2786 usbd_set_pnpinfo(struct usb_device *udev, uint8_t iface_index, const char *pnpinfo)
2788 struct usb_interface *iface;
2790 iface = usbd_get_iface(udev, iface_index);
2792 return (USB_ERR_INVAL);
2794 if (iface->pnpinfo != NULL) {
2795 free(iface->pnpinfo, M_USBDEV);
2796 iface->pnpinfo = NULL;
2799 if (pnpinfo == NULL || pnpinfo[0] == 0)
2800 return (0); /* success */
2802 iface->pnpinfo = strdup(pnpinfo, M_USBDEV);
2803 if (iface->pnpinfo == NULL)
2804 return (USB_ERR_NOMEM);
2806 return (0); /* success */
2810 usbd_add_dynamic_quirk(struct usb_device *udev, uint16_t quirk)
2814 for (x = 0; x != USB_MAX_AUTO_QUIRK; x++) {
2815 if (udev->autoQuirk[x] == 0 ||
2816 udev->autoQuirk[x] == quirk) {
2817 udev->autoQuirk[x] = quirk;
2818 return (0); /* success */
2821 return (USB_ERR_NOMEM);