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 void usbd_clear_stall_proc(struct usb_proc_msg *_pm);
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)
433 /*------------------------------------------------------------------------*
436 * This function will free all USB interfaces and USB endpoints belonging
439 * Flag values, see "USB_UNCFG_FLAG_XXX".
440 *------------------------------------------------------------------------*/
442 usb_unconfigure(struct usb_device *udev, uint8_t flag)
446 /* Prevent re-enumeration */
447 do_unlock = usbd_enum_lock(udev);
449 /* detach all interface drivers */
450 usb_detach_device(udev, USB_IFACE_INDEX_ANY, flag);
453 /* free all FIFOs except control endpoint FIFOs */
454 usb_fifo_free_wrap(udev, USB_IFACE_INDEX_ANY, flag);
457 * Free all cdev's, if any.
462 #if USB_HAVE_COMPAT_LINUX
463 /* free Linux compat device, if any */
464 if (udev->linux_endpoint_start) {
465 usb_linux_free_device(udev);
466 udev->linux_endpoint_start = NULL;
470 usb_config_parse(udev, USB_IFACE_INDEX_ANY, USB_CFG_FREE);
472 /* free "cdesc" after "ifaces" and "endpoints", if any */
473 if (udev->cdesc != NULL) {
474 if (udev->flags.usb_mode != USB_MODE_DEVICE)
475 free(udev->cdesc, M_USB);
478 /* set unconfigured state */
479 udev->curr_config_no = USB_UNCONFIG_NO;
480 udev->curr_config_index = USB_UNCONFIG_INDEX;
483 usbd_enum_unlock(udev);
486 /*------------------------------------------------------------------------*
487 * usbd_set_config_index
489 * This function selects configuration by index, independent of the
490 * actual configuration number. This function should not be used by
496 *------------------------------------------------------------------------*/
498 usbd_set_config_index(struct usb_device *udev, uint8_t index)
500 struct usb_status ds;
501 struct usb_config_descriptor *cdp;
508 DPRINTFN(6, "udev=%p index=%d\n", udev, index);
510 /* Prevent re-enumeration */
511 do_unlock = usbd_enum_lock(udev);
513 usb_unconfigure(udev, 0);
515 if (index == USB_UNCONFIG_INDEX) {
517 * Leave unallocated when unconfiguring the
518 * device. "usb_unconfigure()" will also reset
519 * the current config number and index.
521 err = usbd_req_set_config(udev, NULL, USB_UNCONFIG_NO);
522 if (udev->state == USB_STATE_CONFIGURED)
523 usb_set_device_state(udev, USB_STATE_ADDRESSED);
526 /* get the full config descriptor */
527 if (udev->flags.usb_mode == USB_MODE_DEVICE) {
528 /* save some memory */
529 err = usbd_req_get_descriptor_ptr(udev, &cdp,
530 (UDESC_CONFIG << 8) | index);
533 err = usbd_req_get_config_desc_full(udev,
534 NULL, &cdp, M_USB, index);
539 /* set the new config descriptor */
543 /* Figure out if the device is self or bus powered. */
545 if ((!udev->flags.uq_bus_powered) &&
546 (cdp->bmAttributes & UC_SELF_POWERED) &&
547 (udev->flags.usb_mode == USB_MODE_HOST)) {
548 /* May be self powered. */
549 if (cdp->bmAttributes & UC_BUS_POWERED) {
550 /* Must ask device. */
551 err = usbd_req_get_device_status(udev, NULL, &ds);
553 DPRINTFN(0, "could not read "
554 "device status: %s\n",
556 } else if (UGETW(ds.wStatus) & UDS_SELF_POWERED) {
559 DPRINTF("status=0x%04x \n",
564 DPRINTF("udev=%p cdesc=%p (addr %d) cno=%d attr=0x%02x, "
565 "selfpowered=%d, power=%d\n",
567 udev->address, cdp->bConfigurationValue, cdp->bmAttributes,
568 selfpowered, cdp->bMaxPower * 2);
570 /* Check if we have enough power. */
571 power = cdp->bMaxPower * 2;
573 if (udev->parent_hub) {
574 max_power = udev->parent_hub->hub->portpower;
576 max_power = USB_MAX_POWER;
579 if (power > max_power) {
580 DPRINTFN(0, "power exceeded %d > %d\n", power, max_power);
581 err = USB_ERR_NO_POWER;
584 /* Only update "self_powered" in USB Host Mode */
585 if (udev->flags.usb_mode == USB_MODE_HOST) {
586 udev->flags.self_powered = selfpowered;
589 udev->curr_config_no = cdp->bConfigurationValue;
590 udev->curr_config_index = index;
591 usb_set_device_state(udev, USB_STATE_CONFIGURED);
593 /* Set the actual configuration value. */
594 err = usbd_req_set_config(udev, NULL, cdp->bConfigurationValue);
599 err = usb_config_parse(udev, USB_IFACE_INDEX_ANY, USB_CFG_ALLOC);
604 err = usb_config_parse(udev, USB_IFACE_INDEX_ANY, USB_CFG_INIT);
610 /* create device nodes for each endpoint */
611 usb_cdev_create(udev);
615 DPRINTF("error=%s\n", usbd_errstr(err));
617 usb_unconfigure(udev, 0);
620 usbd_enum_unlock(udev);
624 /*------------------------------------------------------------------------*
627 * This function will allocate and free USB interfaces and USB endpoints,
628 * parse the USB configuration structure and initialise the USB endpoints
629 * and interfaces. If "iface_index" is not equal to
630 * "USB_IFACE_INDEX_ANY" then the "cmd" parameter is the
631 * alternate_setting to be selected for the given interface. Else the
632 * "cmd" parameter is defined by "USB_CFG_XXX". "iface_index" can be
633 * "USB_IFACE_INDEX_ANY" or a valid USB interface index. This function
634 * is typically called when setting the configuration or when setting
635 * an alternate interface.
640 *------------------------------------------------------------------------*/
642 usb_config_parse(struct usb_device *udev, uint8_t iface_index, uint8_t cmd)
644 struct usb_idesc_parse_state ips;
645 struct usb_interface_descriptor *id;
646 struct usb_endpoint_descriptor *ed;
647 struct usb_interface *iface;
648 struct usb_endpoint *ep;
656 if (iface_index != USB_IFACE_INDEX_ANY) {
657 /* parameter overload */
667 DPRINTFN(5, "iface_index=%d cmd=%d\n",
670 if (cmd == USB_CFG_FREE)
673 if (cmd == USB_CFG_INIT) {
674 sx_assert(&udev->enum_sx, SA_LOCKED);
676 /* check for in-use endpoints */
678 ep = udev->endpoints;
679 ep_max = udev->endpoints_max;
681 /* look for matching endpoints */
682 if ((iface_index == USB_IFACE_INDEX_ANY) ||
683 (iface_index == ep->iface_index)) {
684 if (ep->refcount_alloc != 0) {
686 * This typically indicates a
687 * more serious error.
689 err = USB_ERR_IN_USE;
692 memset(ep, 0, sizeof(*ep));
693 /* make sure we don't zero the endpoint again */
694 ep->iface_index = USB_IFACE_INDEX_ANY;
704 memset(&ips, 0, sizeof(ips));
709 while ((id = usb_idesc_foreach(udev->cdesc, &ips))) {
711 /* check for interface overflow */
712 if (ips.iface_index == USB_IFACE_MAX)
715 iface = udev->ifaces + ips.iface_index;
717 /* check for specific interface match */
719 if (cmd == USB_CFG_INIT) {
720 if ((iface_index != USB_IFACE_INDEX_ANY) &&
721 (iface_index != ips.iface_index)) {
722 /* wrong interface */
724 } else if (alt_index != ips.iface_index_alt) {
725 /* wrong alternate setting */
728 /* initialise interface */
734 /* check for new interface */
735 if (ips.iface_index_alt == 0) {
736 /* update current number of endpoints */
741 /* setup the USB interface structure */
743 /* set alternate index */
744 iface->alt_index = alt_index;
745 /* set default interface parent */
746 if (iface_index == USB_IFACE_INDEX_ANY) {
747 iface->parent_iface_index =
752 DPRINTFN(5, "found idesc nendpt=%d\n", id->bNumEndpoints);
754 ed = (struct usb_endpoint_descriptor *)id;
758 /* iterate all the endpoint descriptors */
759 while ((ed = usb_edesc_foreach(udev->cdesc, ed))) {
761 if (temp == USB_EP_MAX)
764 ep = udev->endpoints + temp;
769 ecomp = usb_ed_comp_foreach(udev->cdesc, (void *)ed);
771 DPRINTFN(5, "Found endpoint companion descriptor\n");
773 usb_init_endpoint(udev,
774 ips.iface_index, ed, ecomp, ep);
779 /* find maximum number of endpoints */
784 id = (struct usb_interface_descriptor *)ed;
788 /* NOTE: It is valid to have no interfaces and no endpoints! */
790 if (cmd == USB_CFG_ALLOC) {
791 udev->ifaces_max = ips.iface_index;
793 if (udev->ifaces_max != 0) {
794 udev->ifaces = malloc(sizeof(*iface) * udev->ifaces_max,
795 M_USB, M_WAITOK | M_ZERO);
796 if (udev->ifaces == NULL) {
802 udev->endpoints = malloc(sizeof(*ep) * ep_max,
803 M_USB, M_WAITOK | M_ZERO);
804 if (udev->endpoints == NULL) {
809 udev->endpoints = NULL;
811 USB_BUS_LOCK(udev->bus);
812 udev->endpoints_max = ep_max;
813 /* reset any ongoing clear-stall */
814 udev->ep_curr = NULL;
815 USB_BUS_UNLOCK(udev->bus);
820 if (cmd == USB_CFG_ALLOC) {
822 USB_BUS_LOCK(udev->bus);
823 udev->endpoints_max = 0;
824 /* reset any ongoing clear-stall */
825 udev->ep_curr = NULL;
826 USB_BUS_UNLOCK(udev->bus);
829 if (udev->ifaces != NULL)
830 free(udev->ifaces, M_USB);
831 if (udev->endpoints != NULL)
832 free(udev->endpoints, M_USB);
835 udev->endpoints = NULL;
836 udev->ifaces_max = 0;
842 /*------------------------------------------------------------------------*
843 * usbd_set_alt_interface_index
845 * This function will select an alternate interface index for the
846 * given interface index. The interface should not be in use when this
847 * function is called. That means there should not be any open USB
848 * transfers. Else an error is returned. If the alternate setting is
849 * already set this function will simply return success. This function
850 * is called in Host mode and Device mode!
855 *------------------------------------------------------------------------*/
857 usbd_set_alt_interface_index(struct usb_device *udev,
858 uint8_t iface_index, uint8_t alt_index)
860 struct usb_interface *iface = usbd_get_iface(udev, iface_index);
864 /* Prevent re-enumeration */
865 do_unlock = usbd_enum_lock(udev);
871 if (iface->alt_index == alt_index) {
873 * Optimise away duplicate setting of
874 * alternate setting in USB Host Mode!
881 * Free all generic FIFOs for this interface, except control
884 usb_fifo_free_wrap(udev, iface_index, 0);
887 err = usb_config_parse(udev, iface_index, alt_index);
891 if (iface->alt_index != alt_index) {
892 /* the alternate setting does not exist */
897 err = usbd_req_set_alt_interface_no(udev, NULL, iface_index,
898 iface->idesc->bAlternateSetting);
902 usbd_enum_unlock(udev);
906 /*------------------------------------------------------------------------*
907 * usbd_set_endpoint_stall
909 * This function is used to make a BULK or INTERRUPT endpoint send
910 * STALL tokens in USB device mode.
915 *------------------------------------------------------------------------*/
917 usbd_set_endpoint_stall(struct usb_device *udev, struct usb_endpoint *ep,
920 struct usb_xfer *xfer;
926 DPRINTF("Cannot find endpoint\n");
928 * Pretend that the clear or set stall request is
929 * successful else some USB host stacks can do
930 * strange things, especially when a control endpoint
935 et = (ep->edesc->bmAttributes & UE_XFERTYPE);
937 if ((et != UE_BULK) &&
938 (et != UE_INTERRUPT)) {
940 * Should not stall control
941 * nor isochronous endpoints.
943 DPRINTF("Invalid endpoint\n");
946 USB_BUS_LOCK(udev->bus);
948 /* store current stall state */
949 was_stalled = ep->is_stalled;
951 /* check for no change */
952 if (was_stalled && do_stall) {
953 /* if the endpoint is already stalled do nothing */
954 USB_BUS_UNLOCK(udev->bus);
955 DPRINTF("No change\n");
958 /* set stalled state */
961 if (do_stall || (!was_stalled)) {
963 /* lookup the current USB transfer, if any */
964 xfer = ep->endpoint_q.curr;
970 * If "xfer" is non-NULL the "set_stall" method will
971 * complete the USB transfer like in case of a timeout
972 * setting the error code "USB_ERR_STALLED".
974 (udev->bus->methods->set_stall) (udev, xfer, ep, &do_stall);
977 ep->toggle_next = 0; /* reset data toggle */
978 ep->is_stalled = 0; /* clear stalled state */
980 (udev->bus->methods->clear_stall) (udev, ep);
982 /* start up the current or next transfer, if any */
983 usb_command_wrapper(&ep->endpoint_q, ep->endpoint_q.curr);
985 USB_BUS_UNLOCK(udev->bus);
989 /*------------------------------------------------------------------------*
990 * usb_reset_iface_endpoints - used in USB device side mode
991 *------------------------------------------------------------------------*/
993 usb_reset_iface_endpoints(struct usb_device *udev, uint8_t iface_index)
995 struct usb_endpoint *ep;
996 struct usb_endpoint *ep_end;
998 ep = udev->endpoints;
999 ep_end = udev->endpoints + udev->endpoints_max;
1001 for (; ep != ep_end; ep++) {
1003 if ((ep->edesc == NULL) ||
1004 (ep->iface_index != iface_index)) {
1007 /* simulate a clear stall from the peer */
1008 usbd_set_endpoint_stall(udev, ep, 0);
1013 /*------------------------------------------------------------------------*
1014 * usb_detach_device_sub
1016 * This function will try to detach an USB device. If it fails a panic
1019 * Flag values, see "USB_UNCFG_FLAG_XXX".
1020 *------------------------------------------------------------------------*/
1022 usb_detach_device_sub(struct usb_device *udev, device_t *ppdev,
1023 char **ppnpinfo, uint8_t flag)
1032 * NOTE: It is important to clear "*ppdev" before deleting
1033 * the child due to some device methods being called late
1034 * during the delete process !
1038 device_printf(dev, "at %s, port %d, addr %d "
1040 device_get_nameunit(udev->parent_dev),
1041 udev->port_no, udev->address);
1043 if (device_is_attached(dev)) {
1044 if (udev->flags.peer_suspended) {
1045 err = DEVICE_RESUME(dev);
1047 device_printf(dev, "Resume failed\n");
1050 if (device_detach(dev)) {
1054 if (device_delete_child(udev->parent_dev, dev)) {
1059 pnpinfo = *ppnpinfo;
1060 if (pnpinfo != NULL) {
1062 free(pnpinfo, M_USBDEV);
1067 /* Detach is not allowed to fail in the USB world */
1068 panic("usb_detach_device_sub: A USB driver would not detach\n");
1071 /*------------------------------------------------------------------------*
1074 * The following function will detach the matching interfaces.
1075 * This function is NULL safe.
1077 * Flag values, see "USB_UNCFG_FLAG_XXX".
1078 *------------------------------------------------------------------------*/
1080 usb_detach_device(struct usb_device *udev, uint8_t iface_index,
1083 struct usb_interface *iface;
1090 DPRINTFN(4, "udev=%p\n", udev);
1092 sx_assert(&udev->enum_sx, SA_LOCKED);
1095 * First detach the child to give the child's detach routine a
1096 * chance to detach the sub-devices in the correct order.
1097 * Then delete the child using "device_delete_child()" which
1098 * will detach all sub-devices from the bottom and upwards!
1100 if (iface_index != USB_IFACE_INDEX_ANY) {
1102 iface_index = i + 1;
1105 iface_index = USB_IFACE_MAX;
1110 for (; i != iface_index; i++) {
1112 iface = usbd_get_iface(udev, i);
1113 if (iface == NULL) {
1114 /* looks like the end of the USB interfaces */
1117 usb_detach_device_sub(udev, &iface->subdev,
1118 &iface->pnpinfo, flag);
1122 /*------------------------------------------------------------------------*
1123 * usb_probe_and_attach_sub
1128 *------------------------------------------------------------------------*/
1130 usb_probe_and_attach_sub(struct usb_device *udev,
1131 struct usb_attach_arg *uaa)
1133 struct usb_interface *iface;
1138 if (iface->parent_iface_index != USB_IFACE_INDEX_ANY) {
1139 /* leave interface alone */
1142 dev = iface->subdev;
1145 /* clean up after module unload */
1147 if (device_is_attached(dev)) {
1148 /* already a device there */
1151 /* clear "iface->subdev" as early as possible */
1153 iface->subdev = NULL;
1155 if (device_delete_child(udev->parent_dev, dev)) {
1158 * Panic here, else one can get a double call
1159 * to device_detach(). USB devices should
1160 * never fail on detach!
1162 panic("device_delete_child() failed\n");
1165 if (uaa->temp_dev == NULL) {
1167 /* create a new child */
1168 uaa->temp_dev = device_add_child(udev->parent_dev, NULL, -1);
1169 if (uaa->temp_dev == NULL) {
1170 device_printf(udev->parent_dev,
1171 "Device creation failed\n");
1172 return (1); /* failure */
1174 device_set_ivars(uaa->temp_dev, uaa);
1175 device_quiet(uaa->temp_dev);
1178 * Set "subdev" before probe and attach so that "devd" gets
1179 * the information it needs.
1181 iface->subdev = uaa->temp_dev;
1183 if (device_probe_and_attach(iface->subdev) == 0) {
1185 * The USB attach arguments are only available during probe
1188 uaa->temp_dev = NULL;
1189 device_set_ivars(iface->subdev, NULL);
1191 if (udev->flags.peer_suspended) {
1192 err = DEVICE_SUSPEND(iface->subdev);
1194 device_printf(iface->subdev, "Suspend failed\n");
1196 return (0); /* success */
1198 /* No USB driver found */
1199 iface->subdev = NULL;
1201 return (1); /* failure */
1204 /*------------------------------------------------------------------------*
1205 * usbd_set_parent_iface
1207 * Using this function will lock the alternate interface setting on an
1208 * interface. It is typically used for multi interface drivers. In USB
1209 * device side mode it is assumed that the alternate interfaces all
1210 * have the same endpoint descriptors. The default parent index value
1211 * is "USB_IFACE_INDEX_ANY". Then the alternate setting value is not
1213 *------------------------------------------------------------------------*/
1215 usbd_set_parent_iface(struct usb_device *udev, uint8_t iface_index,
1216 uint8_t parent_index)
1218 struct usb_interface *iface;
1224 iface = usbd_get_iface(udev, iface_index);
1226 iface->parent_iface_index = parent_index;
1230 usb_init_attach_arg(struct usb_device *udev,
1231 struct usb_attach_arg *uaa)
1233 memset(uaa, 0, sizeof(*uaa));
1236 uaa->usb_mode = udev->flags.usb_mode;
1237 uaa->port = udev->port_no;
1238 uaa->dev_state = UAA_DEV_READY;
1240 uaa->info.idVendor = UGETW(udev->ddesc.idVendor);
1241 uaa->info.idProduct = UGETW(udev->ddesc.idProduct);
1242 uaa->info.bcdDevice = UGETW(udev->ddesc.bcdDevice);
1243 uaa->info.bDeviceClass = udev->ddesc.bDeviceClass;
1244 uaa->info.bDeviceSubClass = udev->ddesc.bDeviceSubClass;
1245 uaa->info.bDeviceProtocol = udev->ddesc.bDeviceProtocol;
1246 uaa->info.bConfigIndex = udev->curr_config_index;
1247 uaa->info.bConfigNum = udev->curr_config_no;
1250 /*------------------------------------------------------------------------*
1251 * usb_probe_and_attach
1253 * This function is called from "uhub_explore_sub()",
1254 * "usb_handle_set_config()" and "usb_handle_request()".
1258 * Else: A control transfer failed
1259 *------------------------------------------------------------------------*/
1261 usb_probe_and_attach(struct usb_device *udev, uint8_t iface_index)
1263 struct usb_attach_arg uaa;
1264 struct usb_interface *iface;
1270 DPRINTF("udev == NULL\n");
1271 return (USB_ERR_INVAL);
1273 /* Prevent re-enumeration */
1274 do_unlock = usbd_enum_lock(udev);
1276 if (udev->curr_config_index == USB_UNCONFIG_INDEX) {
1277 /* do nothing - no configuration has been set */
1280 /* setup USB attach arguments */
1282 usb_init_attach_arg(udev, &uaa);
1285 * If the whole USB device is targeted, invoke the USB event
1288 if (iface_index == USB_IFACE_INDEX_ANY) {
1290 EVENTHANDLER_INVOKE(usb_dev_configured, udev, &uaa);
1292 if (uaa.dev_state != UAA_DEV_READY) {
1293 /* leave device unconfigured */
1294 usb_unconfigure(udev, 0);
1299 /* Check if only one interface should be probed: */
1300 if (iface_index != USB_IFACE_INDEX_ANY) {
1308 /* Do the probe and attach */
1309 for (; i != j; i++) {
1311 iface = usbd_get_iface(udev, i);
1312 if (iface == NULL) {
1314 * Looks like the end of the USB
1317 DPRINTFN(2, "end of interfaces "
1321 if (iface->idesc == NULL) {
1322 /* no interface descriptor */
1327 uaa.info.bInterfaceClass =
1328 iface->idesc->bInterfaceClass;
1329 uaa.info.bInterfaceSubClass =
1330 iface->idesc->bInterfaceSubClass;
1331 uaa.info.bInterfaceProtocol =
1332 iface->idesc->bInterfaceProtocol;
1333 uaa.info.bIfaceIndex = i;
1334 uaa.info.bIfaceNum =
1335 iface->idesc->bInterfaceNumber;
1336 uaa.driver_info = 0; /* reset driver_info */
1338 DPRINTFN(2, "iclass=%u/%u/%u iindex=%u/%u\n",
1339 uaa.info.bInterfaceClass,
1340 uaa.info.bInterfaceSubClass,
1341 uaa.info.bInterfaceProtocol,
1342 uaa.info.bIfaceIndex,
1343 uaa.info.bIfaceNum);
1345 usb_probe_and_attach_sub(udev, &uaa);
1348 * Remove the leftover child, if any, to enforce that
1349 * a new nomatch devd event is generated for the next
1350 * interface if no driver is found:
1352 if (uaa.temp_dev == NULL)
1354 if (device_delete_child(udev->parent_dev, uaa.temp_dev))
1355 DPRINTFN(0, "device delete child failed\n");
1356 uaa.temp_dev = NULL;
1360 usbd_enum_unlock(udev);
1364 /*------------------------------------------------------------------------*
1365 * usb_suspend_resume_sub
1367 * This function is called when the suspend or resume methods should
1368 * be executed on an USB device.
1369 *------------------------------------------------------------------------*/
1371 usb_suspend_resume_sub(struct usb_device *udev, device_t dev, uint8_t do_suspend)
1378 if (!device_is_attached(dev)) {
1382 err = DEVICE_SUSPEND(dev);
1384 err = DEVICE_RESUME(dev);
1387 device_printf(dev, "%s failed\n",
1388 do_suspend ? "Suspend" : "Resume");
1392 /*------------------------------------------------------------------------*
1393 * usb_suspend_resume
1395 * The following function will suspend or resume the USB device.
1400 *------------------------------------------------------------------------*/
1402 usb_suspend_resume(struct usb_device *udev, uint8_t do_suspend)
1404 struct usb_interface *iface;
1411 DPRINTFN(4, "udev=%p do_suspend=%d\n", udev, do_suspend);
1413 sx_assert(&udev->sr_sx, SA_LOCKED);
1415 USB_BUS_LOCK(udev->bus);
1416 /* filter the suspend events */
1417 if (udev->flags.peer_suspended == do_suspend) {
1418 USB_BUS_UNLOCK(udev->bus);
1422 udev->flags.peer_suspended = do_suspend;
1423 USB_BUS_UNLOCK(udev->bus);
1425 /* do the suspend or resume */
1427 for (i = 0; i != USB_IFACE_MAX; i++) {
1429 iface = usbd_get_iface(udev, i);
1430 if (iface == NULL) {
1431 /* looks like the end of the USB interfaces */
1434 usb_suspend_resume_sub(udev, iface->subdev, do_suspend);
1439 /*------------------------------------------------------------------------*
1440 * usbd_clear_stall_proc
1442 * This function performs generic USB clear stall operations.
1443 *------------------------------------------------------------------------*/
1445 usbd_clear_stall_proc(struct usb_proc_msg *_pm)
1447 struct usb_clear_stall_msg *pm = (void *)_pm;
1448 struct usb_device *udev = pm->udev;
1451 USB_BUS_UNLOCK(udev->bus);
1452 mtx_lock(&udev->device_mtx);
1454 /* Start clear stall callback */
1455 usbd_transfer_start(udev->ctrl_xfer[1]);
1458 mtx_unlock(&udev->device_mtx);
1459 USB_BUS_LOCK(udev->bus);
1462 /*------------------------------------------------------------------------*
1465 * This function allocates a new USB device. This function is called
1466 * when a new device has been put in the powered state, but not yet in
1467 * the addressed state. Get initial descriptor, set the address, get
1468 * full descriptor and get strings.
1473 *------------------------------------------------------------------------*/
1475 usb_alloc_device(device_t parent_dev, struct usb_bus *bus,
1476 struct usb_device *parent_hub, uint8_t depth, uint8_t port_index,
1477 uint8_t port_no, enum usb_dev_speed speed, enum usb_hc_mode mode)
1479 struct usb_attach_arg uaa;
1480 struct usb_device *udev;
1481 struct usb_device *adev;
1482 struct usb_device *hub;
1483 uint8_t *scratch_ptr;
1485 uint8_t device_index;
1486 uint8_t config_index;
1487 uint8_t config_quirk;
1488 uint8_t set_config_failed;
1491 DPRINTF("parent_dev=%p, bus=%p, parent_hub=%p, depth=%u, "
1492 "port_index=%u, port_no=%u, speed=%u, usb_mode=%u\n",
1493 parent_dev, bus, parent_hub, depth, port_index, port_no,
1497 * Find an unused device index. In USB Host mode this is the
1498 * same as the device address.
1500 * Device index zero is not used and device index 1 should
1501 * always be the root hub.
1503 for (device_index = USB_ROOT_HUB_ADDR;
1504 (device_index != bus->devices_max) &&
1505 (bus->devices[device_index] != NULL);
1506 device_index++) /* nop */;
1508 if (device_index == bus->devices_max) {
1509 device_printf(bus->bdev,
1510 "No free USB device index for new device\n");
1515 device_printf(bus->bdev,
1516 "Invalid device depth\n");
1519 udev = malloc(sizeof(*udev), M_USB, M_WAITOK | M_ZERO);
1523 /* initialise our SX-lock */
1524 sx_init_flags(&udev->enum_sx, "USB config SX lock", SX_DUPOK);
1525 sx_init_flags(&udev->sr_sx, "USB suspend and resume SX lock", SX_NOWITNESS);
1527 cv_init(&udev->ctrlreq_cv, "WCTRL");
1528 cv_init(&udev->ref_cv, "UGONE");
1530 /* initialise our mutex */
1531 mtx_init(&udev->device_mtx, "USB device mutex", NULL, MTX_DEF);
1533 /* initialise generic clear stall */
1534 udev->cs_msg[0].hdr.pm_callback = &usbd_clear_stall_proc;
1535 udev->cs_msg[0].udev = udev;
1536 udev->cs_msg[1].hdr.pm_callback = &usbd_clear_stall_proc;
1537 udev->cs_msg[1].udev = udev;
1539 /* initialise some USB device fields */
1540 udev->parent_hub = parent_hub;
1541 udev->parent_dev = parent_dev;
1542 udev->port_index = port_index;
1543 udev->port_no = port_no;
1544 udev->depth = depth;
1546 udev->address = USB_START_ADDR; /* default value */
1547 udev->plugtime = (usb_ticks_t)ticks;
1549 * We need to force the power mode to "on" because there are plenty
1550 * of USB devices out there that do not work very well with
1551 * automatic suspend and resume!
1553 udev->power_mode = usbd_filter_power_mode(udev, USB_POWER_MODE_ON);
1554 udev->pwr_save.last_xfer_time = ticks;
1555 /* we are not ready yet */
1558 /* set up default endpoint descriptor */
1559 udev->ctrl_ep_desc.bLength = sizeof(udev->ctrl_ep_desc);
1560 udev->ctrl_ep_desc.bDescriptorType = UDESC_ENDPOINT;
1561 udev->ctrl_ep_desc.bEndpointAddress = USB_CONTROL_ENDPOINT;
1562 udev->ctrl_ep_desc.bmAttributes = UE_CONTROL;
1563 udev->ctrl_ep_desc.wMaxPacketSize[0] = USB_MAX_IPACKET;
1564 udev->ctrl_ep_desc.wMaxPacketSize[1] = 0;
1565 udev->ctrl_ep_desc.bInterval = 0;
1567 /* set up default endpoint companion descriptor */
1568 udev->ctrl_ep_comp_desc.bLength = sizeof(udev->ctrl_ep_comp_desc);
1569 udev->ctrl_ep_comp_desc.bDescriptorType = UDESC_ENDPOINT_SS_COMP;
1571 udev->ddesc.bMaxPacketSize = USB_MAX_IPACKET;
1573 udev->speed = speed;
1574 udev->flags.usb_mode = mode;
1576 /* search for our High Speed USB HUB, if any */
1579 hub = udev->parent_hub;
1582 if (hub->speed == USB_SPEED_HIGH) {
1583 udev->hs_hub_addr = hub->address;
1584 udev->parent_hs_hub = hub;
1585 udev->hs_port_no = adev->port_no;
1589 hub = hub->parent_hub;
1592 /* init the default endpoint */
1593 usb_init_endpoint(udev, 0,
1594 &udev->ctrl_ep_desc,
1595 &udev->ctrl_ep_comp_desc,
1598 /* set device index */
1599 udev->device_index = device_index;
1602 /* Create ugen name */
1603 snprintf(udev->ugen_name, sizeof(udev->ugen_name),
1604 USB_GENERIC_NAME "%u.%u", device_get_unit(bus->bdev),
1606 LIST_INIT(&udev->pd_list);
1608 /* Create the control endpoint device */
1609 udev->ctrl_dev = usb_make_dev(udev, NULL, 0, 0,
1610 FREAD|FWRITE, UID_ROOT, GID_OPERATOR, 0600);
1612 /* Create a link from /dev/ugenX.X to the default endpoint */
1613 if (udev->ctrl_dev != NULL)
1614 make_dev_alias(udev->ctrl_dev->cdev, "%s", udev->ugen_name);
1616 /* Initialise device */
1617 if (bus->methods->device_init != NULL) {
1618 err = (bus->methods->device_init) (udev);
1620 DPRINTFN(0, "device init %d failed "
1621 "(%s, ignored)\n", device_index,
1626 /* set powered device state after device init is complete */
1627 usb_set_device_state(udev, USB_STATE_POWERED);
1629 if (udev->flags.usb_mode == USB_MODE_HOST) {
1631 err = usbd_req_set_address(udev, NULL, device_index);
1634 * This is the new USB device address from now on, if
1635 * the set address request didn't set it already.
1637 if (udev->address == USB_START_ADDR)
1638 udev->address = device_index;
1641 * We ignore any set-address errors, hence there are
1642 * buggy USB devices out there that actually receive
1643 * the SETUP PID, but manage to set the address before
1644 * the STATUS stage is ACK'ed. If the device responds
1645 * to the subsequent get-descriptor at the new
1646 * address, then we know that the set-address command
1650 DPRINTFN(0, "set address %d failed "
1651 "(%s, ignored)\n", udev->address,
1655 /* We are not self powered */
1656 udev->flags.self_powered = 0;
1658 /* Set unconfigured state */
1659 udev->curr_config_no = USB_UNCONFIG_NO;
1660 udev->curr_config_index = USB_UNCONFIG_INDEX;
1662 /* Setup USB descriptors */
1663 err = (usb_temp_setup_by_index_p) (udev, usb_template);
1665 DPRINTFN(0, "setting up USB template failed maybe the USB "
1666 "template module has not been loaded\n");
1670 usb_set_device_state(udev, USB_STATE_ADDRESSED);
1672 /* setup the device descriptor and the initial "wMaxPacketSize" */
1673 err = usbd_setup_device_desc(udev, NULL);
1676 /* XXX try to re-enumerate the device */
1677 err = usbd_req_re_enumerate(udev, NULL);
1683 * Setup temporary USB attach args so that we can figure out some
1684 * basic quirks for this device.
1686 usb_init_attach_arg(udev, &uaa);
1688 if (usb_test_quirk(&uaa, UQ_BUS_POWERED)) {
1689 udev->flags.uq_bus_powered = 1;
1691 if (usb_test_quirk(&uaa, UQ_NO_STRINGS)) {
1692 udev->flags.no_strings = 1;
1695 * Workaround for buggy USB devices.
1697 * It appears that some string-less USB chips will crash and
1698 * disappear if any attempts are made to read any string
1701 * Try to detect such chips by checking the strings in the USB
1702 * device descriptor. If no strings are present there we
1703 * simply disable all USB strings.
1706 /* Protect scratch area */
1707 do_unlock = usbd_enum_lock(udev);
1709 scratch_ptr = udev->scratch.data;
1711 if (udev->ddesc.iManufacturer ||
1712 udev->ddesc.iProduct ||
1713 udev->ddesc.iSerialNumber) {
1714 /* read out the language ID string */
1715 err = usbd_req_get_string_desc(udev, NULL,
1716 (char *)scratch_ptr, 4, 0, USB_LANGUAGE_TABLE);
1718 err = USB_ERR_INVAL;
1721 if (err || (scratch_ptr[0] < 4)) {
1722 udev->flags.no_strings = 1;
1729 /* load preferred value and mask */
1731 mask = usb_lang_mask;
1733 /* align length correctly */
1734 scratch_ptr[0] &= ~1U;
1736 /* fix compiler warning */
1739 /* search for preferred language */
1740 for (x = 2; (x < scratch_ptr[0]); x += 2) {
1741 langid = UGETW(scratch_ptr + x);
1742 if ((langid & mask) == pref)
1745 if (x >= scratch_ptr[0]) {
1746 /* pick the first language as the default */
1747 DPRINTFN(1, "Using first language\n");
1748 langid = UGETW(scratch_ptr + 2);
1751 DPRINTFN(1, "Language selected: 0x%04x\n", langid);
1752 udev->langid = langid;
1756 usbd_enum_unlock(udev);
1758 /* assume 100mA bus powered for now. Changed when configured. */
1759 udev->power = USB_MIN_POWER;
1760 /* fetch the vendor and product strings from the device */
1761 usbd_set_device_strings(udev);
1763 if (udev->flags.usb_mode == USB_MODE_DEVICE) {
1764 /* USB device mode setup is complete */
1770 * Most USB devices should attach to config index 0 by
1773 if (usb_test_quirk(&uaa, UQ_CFG_INDEX_0)) {
1776 } else if (usb_test_quirk(&uaa, UQ_CFG_INDEX_1)) {
1779 } else if (usb_test_quirk(&uaa, UQ_CFG_INDEX_2)) {
1782 } else if (usb_test_quirk(&uaa, UQ_CFG_INDEX_3)) {
1785 } else if (usb_test_quirk(&uaa, UQ_CFG_INDEX_4)) {
1793 set_config_failed = 0;
1796 DPRINTF("setting config %u\n", config_index);
1798 /* get the USB device configured */
1799 err = usbd_set_config_index(udev, config_index);
1801 if (udev->ddesc.bNumConfigurations != 0) {
1802 if (!set_config_failed) {
1803 set_config_failed = 1;
1804 /* XXX try to re-enumerate the device */
1805 err = usbd_req_re_enumerate(udev, NULL);
1807 goto repeat_set_config;
1809 DPRINTFN(0, "Failure selecting configuration index %u:"
1810 "%s, port %u, addr %u (ignored)\n",
1811 config_index, usbd_errstr(err), udev->port_no,
1815 * Some USB devices do not have any configurations. Ignore any
1816 * set config failures!
1821 if (!config_quirk && config_index + 1 < udev->ddesc.bNumConfigurations) {
1822 if ((udev->cdesc->bNumInterface < 2) &&
1823 usbd_get_no_descriptors(udev->cdesc, UDESC_ENDPOINT) == 0) {
1824 DPRINTFN(0, "Found no endpoints, trying next config\n");
1826 goto repeat_set_config;
1828 if (config_index == 0) {
1830 * Try to figure out if we have an
1831 * auto-install disk there:
1833 if (usb_iface_is_cdrom(udev, 0)) {
1834 DPRINTFN(0, "Found possible auto-install "
1835 "disk (trying next config)\n");
1837 goto repeat_set_config;
1841 if (set_config_failed == 0 && config_index == 0 &&
1842 usb_test_quirk(&uaa, UQ_MSC_NO_SYNC_CACHE) == 0 &&
1843 usb_test_quirk(&uaa, UQ_MSC_NO_GETMAXLUN) == 0) {
1846 * Try to figure out if there are any MSC quirks we
1847 * should apply automatically:
1849 err = usb_msc_auto_quirk(udev, 0);
1852 set_config_failed = 1;
1853 goto repeat_set_config;
1858 DPRINTF("new dev (addr %d), udev=%p, parent_hub=%p\n",
1859 udev->address, udev, udev->parent_hub);
1861 /* register our device - we are ready */
1862 usb_bus_port_set_device(bus, parent_hub ?
1863 parent_hub->hub->ports + port_index : NULL, udev, device_index);
1866 /* Symlink the ugen device name */
1867 udev->ugen_symlink = usb_alloc_symlink(udev->ugen_name);
1869 /* Announce device */
1870 printf("%s: <%s> at %s\n", udev->ugen_name,
1871 usb_get_manufacturer(udev),
1872 device_get_nameunit(udev->bus->bdev));
1876 usb_notify_addq("ATTACH", udev);
1881 * Free USB device and all subdevices, if any.
1883 usb_free_device(udev, 0);
1890 struct usb_fs_privdata *
1891 usb_make_dev(struct usb_device *udev, const char *devname, int ep,
1892 int fi, int rwmode, uid_t uid, gid_t gid, int mode)
1894 struct usb_fs_privdata* pd;
1897 /* Store information to locate ourselves again later */
1898 pd = malloc(sizeof(struct usb_fs_privdata), M_USBDEV,
1900 pd->bus_index = device_get_unit(udev->bus->bdev);
1901 pd->dev_index = udev->device_index;
1903 pd->fifo_index = fi;
1906 /* Now, create the device itself */
1907 if (devname == NULL) {
1909 snprintf(buffer, sizeof(buffer), USB_DEVICE_DIR "/%u.%u.%u",
1910 pd->bus_index, pd->dev_index, pd->ep_addr);
1913 pd->cdev = make_dev(&usb_devsw, 0, uid, gid, mode, "%s", devname);
1915 if (pd->cdev == NULL) {
1916 DPRINTFN(0, "Failed to create device %s\n", devname);
1921 /* XXX setting si_drv1 and creating the device is not atomic! */
1922 pd->cdev->si_drv1 = pd;
1928 usb_destroy_dev(struct usb_fs_privdata *pd)
1933 destroy_dev(pd->cdev);
1939 usb_cdev_create(struct usb_device *udev)
1941 struct usb_config_descriptor *cd;
1942 struct usb_endpoint_descriptor *ed;
1943 struct usb_descriptor *desc;
1944 struct usb_fs_privdata* pd;
1945 int inmode, outmode, inmask, outmask, mode;
1948 KASSERT(LIST_FIRST(&udev->pd_list) == NULL, ("stale cdev entries"));
1950 DPRINTFN(2, "Creating device nodes\n");
1952 if (usbd_get_mode(udev) == USB_MODE_DEVICE) {
1955 } else { /* USB_MODE_HOST */
1965 * Collect all used endpoint numbers instead of just
1966 * generating 16 static endpoints.
1968 cd = usbd_get_config_descriptor(udev);
1969 while ((desc = usb_desc_foreach(cd, desc))) {
1970 /* filter out all endpoint descriptors */
1971 if ((desc->bDescriptorType == UDESC_ENDPOINT) &&
1972 (desc->bLength >= sizeof(*ed))) {
1973 ed = (struct usb_endpoint_descriptor *)desc;
1976 ep = ed->bEndpointAddress;
1977 if (UE_GET_DIR(ep) == UE_DIR_OUT)
1978 outmask |= 1 << UE_GET_ADDR(ep);
1980 inmask |= 1 << UE_GET_ADDR(ep);
1984 /* Create all available endpoints except EP0 */
1985 for (ep = 1; ep < 16; ep++) {
1986 mode = (inmask & (1 << ep)) ? inmode : 0;
1987 mode |= (outmask & (1 << ep)) ? outmode : 0;
1989 continue; /* no IN or OUT endpoint */
1991 pd = usb_make_dev(udev, NULL, ep, 0,
1992 mode, UID_ROOT, GID_OPERATOR, 0600);
1995 LIST_INSERT_HEAD(&udev->pd_list, pd, pd_next);
2000 usb_cdev_free(struct usb_device *udev)
2002 struct usb_fs_privdata* pd;
2004 DPRINTFN(2, "Freeing device nodes\n");
2006 while ((pd = LIST_FIRST(&udev->pd_list)) != NULL) {
2007 KASSERT(pd->cdev->si_drv1 == pd, ("privdata corrupt"));
2009 LIST_REMOVE(pd, pd_next);
2011 usb_destroy_dev(pd);
2016 /*------------------------------------------------------------------------*
2019 * This function is NULL safe and will free an USB device and its
2020 * children devices, if any.
2022 * Flag values: Reserved, set to zero.
2023 *------------------------------------------------------------------------*/
2025 usb_free_device(struct usb_device *udev, uint8_t flag)
2027 struct usb_bus *bus;
2030 return; /* already freed */
2032 DPRINTFN(4, "udev=%p port=%d\n", udev, udev->port_no);
2035 usb_set_device_state(udev, USB_STATE_DETACHED);
2038 usb_notify_addq("DETACH", udev);
2042 printf("%s: <%s> at %s (disconnected)\n", udev->ugen_name,
2043 usb_get_manufacturer(udev), device_get_nameunit(bus->bdev));
2045 /* Destroy UGEN symlink, if any */
2046 if (udev->ugen_symlink) {
2047 usb_free_symlink(udev->ugen_symlink);
2048 udev->ugen_symlink = NULL;
2052 * Unregister our device first which will prevent any further
2055 usb_bus_port_set_device(bus, udev->parent_hub ?
2056 udev->parent_hub->hub->ports + udev->port_index : NULL,
2057 NULL, USB_ROOT_HUB_ADDR);
2060 /* wait for all pending references to go away: */
2061 mtx_lock(&usb_ref_lock);
2063 while (udev->refcount != 0) {
2064 cv_wait(&udev->ref_cv, &usb_ref_lock);
2066 mtx_unlock(&usb_ref_lock);
2068 usb_destroy_dev(udev->ctrl_dev);
2071 if (udev->flags.usb_mode == USB_MODE_DEVICE) {
2072 /* stop receiving any control transfers (Device Side Mode) */
2073 usbd_transfer_unsetup(udev->ctrl_xfer, USB_CTRL_XFER_MAX);
2076 /* the following will get the device unconfigured in software */
2077 usb_unconfigure(udev, USB_UNCFG_FLAG_FREE_EP0);
2079 /* unsetup any leftover default USB transfers */
2080 usbd_transfer_unsetup(udev->ctrl_xfer, USB_CTRL_XFER_MAX);
2082 /* template unsetup, if any */
2083 (usb_temp_unsetup_p) (udev);
2086 * Make sure that our clear-stall messages are not queued
2089 USB_BUS_LOCK(udev->bus);
2090 usb_proc_mwait(&udev->bus->non_giant_callback_proc,
2091 &udev->cs_msg[0], &udev->cs_msg[1]);
2092 USB_BUS_UNLOCK(udev->bus);
2094 sx_destroy(&udev->enum_sx);
2095 sx_destroy(&udev->sr_sx);
2097 cv_destroy(&udev->ctrlreq_cv);
2098 cv_destroy(&udev->ref_cv);
2100 mtx_destroy(&udev->device_mtx);
2102 KASSERT(LIST_FIRST(&udev->pd_list) == NULL, ("leaked cdev entries"));
2105 /* Uninitialise device */
2106 if (bus->methods->device_uninit != NULL)
2107 (bus->methods->device_uninit) (udev);
2110 free(udev->serial, M_USB);
2111 free(udev->manufacturer, M_USB);
2112 free(udev->product, M_USB);
2116 /*------------------------------------------------------------------------*
2119 * This function is the safe way to get the USB interface structure
2120 * pointer by interface index.
2123 * NULL: Interface not present.
2124 * Else: Pointer to USB interface structure.
2125 *------------------------------------------------------------------------*/
2126 struct usb_interface *
2127 usbd_get_iface(struct usb_device *udev, uint8_t iface_index)
2129 struct usb_interface *iface = udev->ifaces + iface_index;
2131 if (iface_index >= udev->ifaces_max)
2136 /*------------------------------------------------------------------------*
2137 * usbd_find_descriptor
2139 * This function will lookup the first descriptor that matches the
2140 * criteria given by the arguments "type" and "subtype". Descriptors
2141 * will only be searched within the interface having the index
2142 * "iface_index". If the "id" argument points to an USB descriptor,
2143 * it will be skipped before the search is started. This allows
2144 * searching for multiple descriptors using the same criteria. Else
2145 * the search is started after the interface descriptor.
2148 * NULL: End of descriptors
2149 * Else: A descriptor matching the criteria
2150 *------------------------------------------------------------------------*/
2152 usbd_find_descriptor(struct usb_device *udev, void *id, uint8_t iface_index,
2153 uint8_t type, uint8_t type_mask,
2154 uint8_t subtype, uint8_t subtype_mask)
2156 struct usb_descriptor *desc;
2157 struct usb_config_descriptor *cd;
2158 struct usb_interface *iface;
2160 cd = usbd_get_config_descriptor(udev);
2165 iface = usbd_get_iface(udev, iface_index);
2166 if (iface == NULL) {
2169 id = usbd_get_interface_descriptor(iface);
2176 while ((desc = usb_desc_foreach(cd, desc))) {
2178 if (desc->bDescriptorType == UDESC_INTERFACE) {
2181 if (((desc->bDescriptorType & type_mask) == type) &&
2182 ((desc->bDescriptorSubtype & subtype_mask) == subtype)) {
2189 /*------------------------------------------------------------------------*
2192 * This function will dump information from the device descriptor
2193 * belonging to the USB device pointed to by "udev", to the string
2194 * pointed to by "dst_ptr" having a maximum length of "dst_len" bytes
2195 * including the terminating zero.
2196 *------------------------------------------------------------------------*/
2198 usb_devinfo(struct usb_device *udev, char *dst_ptr, uint16_t dst_len)
2200 struct usb_device_descriptor *udd = &udev->ddesc;
2204 bcdUSB = UGETW(udd->bcdUSB);
2205 bcdDevice = UGETW(udd->bcdDevice);
2207 if (udd->bDeviceClass != 0xFF) {
2208 snprintf(dst_ptr, dst_len, "%s %s, class %d/%d, rev %x.%02x/"
2210 usb_get_manufacturer(udev),
2211 usb_get_product(udev),
2212 udd->bDeviceClass, udd->bDeviceSubClass,
2213 (bcdUSB >> 8), bcdUSB & 0xFF,
2214 (bcdDevice >> 8), bcdDevice & 0xFF,
2217 snprintf(dst_ptr, dst_len, "%s %s, rev %x.%02x/"
2219 usb_get_manufacturer(udev),
2220 usb_get_product(udev),
2221 (bcdUSB >> 8), bcdUSB & 0xFF,
2222 (bcdDevice >> 8), bcdDevice & 0xFF,
2229 * Descriptions of of known vendors and devices ("products").
2231 struct usb_knowndev {
2235 const char *vendorname;
2236 const char *productname;
2239 #define USB_KNOWNDEV_NOPROD 0x01 /* match on vendor only */
2241 #include "usbdevs.h"
2242 #include "usbdevs_data.h"
2243 #endif /* USB_VERBOSE */
2246 usbd_set_device_strings(struct usb_device *udev)
2248 struct usb_device_descriptor *udd = &udev->ddesc;
2250 const struct usb_knowndev *kdp;
2255 uint16_t product_id;
2258 /* Protect scratch area */
2259 do_unlock = usbd_enum_lock(udev);
2261 temp_ptr = (char *)udev->scratch.data;
2262 temp_size = sizeof(udev->scratch.data);
2264 vendor_id = UGETW(udd->idVendor);
2265 product_id = UGETW(udd->idProduct);
2267 /* get serial number string */
2268 usbd_req_get_string_any(udev, NULL, temp_ptr, temp_size,
2269 udev->ddesc.iSerialNumber);
2270 udev->serial = strdup(temp_ptr, M_USB);
2272 /* get manufacturer string */
2273 usbd_req_get_string_any(udev, NULL, temp_ptr, temp_size,
2274 udev->ddesc.iManufacturer);
2275 usb_trim_spaces(temp_ptr);
2276 if (temp_ptr[0] != '\0')
2277 udev->manufacturer = strdup(temp_ptr, M_USB);
2279 /* get product string */
2280 usbd_req_get_string_any(udev, NULL, temp_ptr, temp_size,
2281 udev->ddesc.iProduct);
2282 usb_trim_spaces(temp_ptr);
2283 if (temp_ptr[0] != '\0')
2284 udev->product = strdup(temp_ptr, M_USB);
2287 if (udev->manufacturer == NULL || udev->product == NULL) {
2288 for (kdp = usb_knowndevs; kdp->vendorname != NULL; kdp++) {
2289 if (kdp->vendor == vendor_id &&
2290 (kdp->product == product_id ||
2291 (kdp->flags & USB_KNOWNDEV_NOPROD) != 0))
2294 if (kdp->vendorname != NULL) {
2295 /* XXX should use pointer to knowndevs string */
2296 if (udev->manufacturer == NULL) {
2297 udev->manufacturer = strdup(kdp->vendorname,
2300 if (udev->product == NULL &&
2301 (kdp->flags & USB_KNOWNDEV_NOPROD) == 0) {
2302 udev->product = strdup(kdp->productname,
2308 /* Provide default strings if none were found */
2309 if (udev->manufacturer == NULL) {
2310 snprintf(temp_ptr, temp_size, "vendor 0x%04x", vendor_id);
2311 udev->manufacturer = strdup(temp_ptr, M_USB);
2313 if (udev->product == NULL) {
2314 snprintf(temp_ptr, temp_size, "product 0x%04x", product_id);
2315 udev->product = strdup(temp_ptr, M_USB);
2319 usbd_enum_unlock(udev);
2327 usbd_get_mode(struct usb_device *udev)
2329 return (udev->flags.usb_mode);
2334 * See: USB_SPEED_XXX
2337 usbd_get_speed(struct usb_device *udev)
2339 return (udev->speed);
2343 usbd_get_isoc_fps(struct usb_device *udev)
2346 switch (udev->speed) {
2348 case USB_SPEED_FULL:
2355 struct usb_device_descriptor *
2356 usbd_get_device_descriptor(struct usb_device *udev)
2359 return (NULL); /* be NULL safe */
2360 return (&udev->ddesc);
2363 struct usb_config_descriptor *
2364 usbd_get_config_descriptor(struct usb_device *udev)
2367 return (NULL); /* be NULL safe */
2368 return (udev->cdesc);
2371 /*------------------------------------------------------------------------*
2372 * usb_test_quirk - test a device for a given quirk
2375 * 0: The USB device does not have the given quirk.
2376 * Else: The USB device has the given quirk.
2377 *------------------------------------------------------------------------*/
2379 usb_test_quirk(const struct usb_attach_arg *uaa, uint16_t quirk)
2384 if (quirk == UQ_NONE)
2387 /* search the automatic per device quirks first */
2389 for (x = 0; x != USB_MAX_AUTO_QUIRK; x++) {
2390 if (uaa->device->autoQuirk[x] == quirk)
2394 /* search global quirk table, if any */
2396 found = (usb_test_quirk_p) (&uaa->info, quirk);
2401 struct usb_interface_descriptor *
2402 usbd_get_interface_descriptor(struct usb_interface *iface)
2405 return (NULL); /* be NULL safe */
2406 return (iface->idesc);
2410 usbd_get_interface_altindex(struct usb_interface *iface)
2412 return (iface->alt_index);
2416 usbd_get_bus_index(struct usb_device *udev)
2418 return ((uint8_t)device_get_unit(udev->bus->bdev));
2422 usbd_get_device_index(struct usb_device *udev)
2424 return (udev->device_index);
2429 usb_notify_addq(const char *type, struct usb_device *udev)
2431 struct usb_interface *iface;
2435 /* announce the device */
2436 sb = sbuf_new_auto();
2445 "devsubclass=0x%02x "
2458 UGETW(udev->ddesc.idVendor),
2459 UGETW(udev->ddesc.idProduct),
2460 udev->ddesc.bDeviceClass,
2461 udev->ddesc.bDeviceSubClass,
2462 usb_get_serial(udev),
2463 UGETW(udev->ddesc.bcdDevice),
2464 (udev->flags.usb_mode == USB_MODE_HOST) ? "host" : "device",
2467 , udev->parent_hub != NULL ?
2468 udev->parent_hub->ugen_name :
2469 device_get_nameunit(device_get_parent(udev->bus->bdev))
2473 devctl_notify("USB", "DEVICE", type, sbuf_data(sb));
2476 /* announce each interface */
2477 for (i = 0; i < USB_IFACE_MAX; i++) {
2478 iface = usbd_get_iface(udev, i);
2480 break; /* end of interfaces */
2481 if (iface->idesc == NULL)
2482 continue; /* no interface descriptor */
2484 sb = sbuf_new_auto();
2493 "devsubclass=0x%02x "
2500 "intsubclass=0x%02x "
2501 "intprotocol=0x%02x",
2506 UGETW(udev->ddesc.idVendor),
2507 UGETW(udev->ddesc.idProduct),
2508 udev->ddesc.bDeviceClass,
2509 udev->ddesc.bDeviceSubClass,
2510 usb_get_serial(udev),
2511 UGETW(udev->ddesc.bcdDevice),
2512 (udev->flags.usb_mode == USB_MODE_HOST) ? "host" : "device",
2513 iface->idesc->bInterfaceNumber,
2514 iface->idesc->bNumEndpoints,
2515 iface->idesc->bInterfaceClass,
2516 iface->idesc->bInterfaceSubClass,
2517 iface->idesc->bInterfaceProtocol);
2519 devctl_notify("USB", "INTERFACE", type, sbuf_data(sb));
2526 /*------------------------------------------------------------------------*
2527 * usb_fifo_free_wrap
2529 * This function will free the FIFOs.
2531 * Description of "flag" argument: If the USB_UNCFG_FLAG_FREE_EP0 flag
2532 * is set and "iface_index" is set to "USB_IFACE_INDEX_ANY", we free
2533 * all FIFOs. If the USB_UNCFG_FLAG_FREE_EP0 flag is not set and
2534 * "iface_index" is set to "USB_IFACE_INDEX_ANY", we free all non
2535 * control endpoint FIFOs. If "iface_index" is not set to
2536 * "USB_IFACE_INDEX_ANY" the flag has no effect.
2537 *------------------------------------------------------------------------*/
2539 usb_fifo_free_wrap(struct usb_device *udev,
2540 uint8_t iface_index, uint8_t flag)
2546 * Free any USB FIFOs on the given interface:
2548 for (i = 0; i != USB_FIFO_MAX; i++) {
2553 /* Check if the interface index matches */
2554 if (iface_index == f->iface_index) {
2555 if (f->methods != &usb_ugen_methods) {
2557 * Don't free any non-generic FIFOs in
2562 if ((f->dev_ep_index == 0) &&
2563 (f->fs_xfer == NULL)) {
2564 /* no need to free this FIFO */
2567 } else if (iface_index == USB_IFACE_INDEX_ANY) {
2568 if ((f->methods == &usb_ugen_methods) &&
2569 (f->dev_ep_index == 0) &&
2570 (!(flag & USB_UNCFG_FLAG_FREE_EP0)) &&
2571 (f->fs_xfer == NULL)) {
2572 /* no need to free this FIFO */
2576 /* no need to free this FIFO */
2579 /* free this FIFO */
2585 /*------------------------------------------------------------------------*
2586 * usb_peer_can_wakeup
2589 * 0: Peer cannot do resume signalling.
2590 * Else: Peer can do resume signalling.
2591 *------------------------------------------------------------------------*/
2593 usb_peer_can_wakeup(struct usb_device *udev)
2595 const struct usb_config_descriptor *cdp;
2598 if ((cdp != NULL) && (udev->flags.usb_mode == USB_MODE_HOST)) {
2599 return (cdp->bmAttributes & UC_REMOTE_WAKEUP);
2601 return (0); /* not supported */
2605 usb_set_device_state(struct usb_device *udev, enum usb_dev_state state)
2608 KASSERT(state < USB_STATE_MAX, ("invalid udev state"));
2610 DPRINTF("udev %p state %s -> %s\n", udev,
2611 usb_statestr(udev->state), usb_statestr(state));
2612 udev->state = state;
2614 if (udev->bus->methods->device_state_change != NULL)
2615 (udev->bus->methods->device_state_change) (udev);
2619 usb_get_device_state(struct usb_device *udev)
2622 return (USB_STATE_DETACHED);
2623 return (udev->state);
2627 usbd_device_attached(struct usb_device *udev)
2629 return (udev->state > USB_STATE_DETACHED);
2633 * The following function locks enumerating the given USB device. If
2634 * the lock is already grabbed this function returns zero. Else a
2635 * non-zero value is returned.
2638 usbd_enum_lock(struct usb_device *udev)
2640 if (sx_xlocked(&udev->enum_sx))
2643 sx_xlock(&udev->enum_sx);
2644 sx_xlock(&udev->sr_sx);
2646 * NEWBUS LOCK NOTE: We should check if any parent SX locks
2647 * are locked before locking Giant. Else the lock can be
2648 * locked multiple times.
2654 /* The following function unlocks enumerating the given USB device. */
2657 usbd_enum_unlock(struct usb_device *udev)
2660 sx_xunlock(&udev->enum_sx);
2661 sx_xunlock(&udev->sr_sx);
2664 /* The following function locks suspend and resume. */
2667 usbd_sr_lock(struct usb_device *udev)
2669 sx_xlock(&udev->sr_sx);
2671 * NEWBUS LOCK NOTE: We should check if any parent SX locks
2672 * are locked before locking Giant. Else the lock can be
2673 * locked multiple times.
2678 /* The following function unlocks suspend and resume. */
2681 usbd_sr_unlock(struct usb_device *udev)
2684 sx_xunlock(&udev->sr_sx);
2688 * The following function checks the enumerating lock for the given
2693 usbd_enum_is_locked(struct usb_device *udev)
2695 return (sx_xlocked(&udev->enum_sx));
2699 * The following function is used to set the per-interface specific
2700 * plug and play information. The string referred to by the pnpinfo
2701 * argument can safely be freed after calling this function. The
2702 * pnpinfo of an interface will be reset at device detach or when
2703 * passing a NULL argument to this function. This function
2704 * returns zero on success, else a USB_ERR_XXX failure code.
2708 usbd_set_pnpinfo(struct usb_device *udev, uint8_t iface_index, const char *pnpinfo)
2710 struct usb_interface *iface;
2712 iface = usbd_get_iface(udev, iface_index);
2714 return (USB_ERR_INVAL);
2716 if (iface->pnpinfo != NULL) {
2717 free(iface->pnpinfo, M_USBDEV);
2718 iface->pnpinfo = NULL;
2721 if (pnpinfo == NULL || pnpinfo[0] == 0)
2722 return (0); /* success */
2724 iface->pnpinfo = strdup(pnpinfo, M_USBDEV);
2725 if (iface->pnpinfo == NULL)
2726 return (USB_ERR_NOMEM);
2728 return (0); /* success */
2732 usbd_add_dynamic_quirk(struct usb_device *udev, uint16_t quirk)
2736 for (x = 0; x != USB_MAX_AUTO_QUIRK; x++) {
2737 if (udev->autoQuirk[x] == 0 ||
2738 udev->autoQuirk[x] == quirk) {
2739 udev->autoQuirk[x] = quirk;
2740 return (0); /* success */
2743 return (USB_ERR_NOMEM);