3 * Copyright (c) 2008 Hans Petter Selasky. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 #ifdef USB_GLOBAL_INCLUDE_FILE
28 #include USB_GLOBAL_INCLUDE_FILE
32 #include <sys/stdint.h>
33 #include <sys/stddef.h>
34 #include <sys/param.h>
35 #include <sys/queue.h>
36 #include <sys/types.h>
37 #include <sys/systm.h>
38 #include <sys/kernel.h>
40 #include <sys/module.h>
42 #include <sys/mutex.h>
43 #include <sys/condvar.h>
44 #include <sys/sysctl.h>
46 #include <sys/unistd.h>
47 #include <sys/callout.h>
48 #include <sys/malloc.h>
51 #include <dev/usb/usb.h>
52 #include <dev/usb/usbdi.h>
54 #define USB_DEBUG_VAR usb_ctrl_debug
56 #include <dev/usb/usb_core.h>
57 #include <dev/usb/usb_debug.h>
58 #include <dev/usb/usb_process.h>
59 #include <dev/usb/usb_busdma.h>
60 #include <dev/usb/usb_dynamic.h>
61 #include <dev/usb/usb_device.h>
62 #include <dev/usb/usb_hub.h>
64 #include <dev/usb/usb_controller.h>
65 #include <dev/usb/usb_bus.h>
66 #include <dev/usb/usb_pf.h>
68 #endif /* USB_GLOBAL_INCLUDE_FILE */
70 /* function prototypes */
72 static device_probe_t usb_probe;
73 static device_attach_t usb_attach;
74 static device_detach_t usb_detach;
75 static device_suspend_t usb_suspend;
76 static device_resume_t usb_resume;
77 static device_shutdown_t usb_shutdown;
79 static void usb_attach_sub(device_t, struct usb_bus *);
81 /* static variables */
84 static int usb_ctrl_debug = 0;
86 static SYSCTL_NODE(_hw_usb, OID_AUTO, ctrl, CTLFLAG_RW, 0, "USB controller");
87 SYSCTL_INT(_hw_usb_ctrl, OID_AUTO, debug, CTLFLAG_RW, &usb_ctrl_debug, 0,
91 #if USB_HAVE_ROOT_MOUNT_HOLD
92 static int usb_no_boot_wait = 0;
93 TUNABLE_INT("hw.usb.no_boot_wait", &usb_no_boot_wait);
94 SYSCTL_INT(_hw_usb, OID_AUTO, no_boot_wait, CTLFLAG_RD|CTLFLAG_TUN, &usb_no_boot_wait, 0,
95 "No USB device enumerate waiting at boot.");
98 static int usb_no_suspend_wait = 0;
99 TUNABLE_INT("hw.usb.no_suspend_wait", &usb_no_suspend_wait);
100 SYSCTL_INT(_hw_usb, OID_AUTO, no_suspend_wait, CTLFLAG_RW|CTLFLAG_TUN,
101 &usb_no_suspend_wait, 0, "No USB device waiting at system suspend.");
103 static int usb_no_shutdown_wait = 0;
104 TUNABLE_INT("hw.usb.no_shutdown_wait", &usb_no_shutdown_wait);
105 SYSCTL_INT(_hw_usb, OID_AUTO, no_shutdown_wait, CTLFLAG_RW|CTLFLAG_TUN,
106 &usb_no_shutdown_wait, 0, "No USB device waiting at system shutdown.");
108 static devclass_t usb_devclass;
110 static device_method_t usb_methods[] = {
111 DEVMETHOD(device_probe, usb_probe),
112 DEVMETHOD(device_attach, usb_attach),
113 DEVMETHOD(device_detach, usb_detach),
114 DEVMETHOD(device_suspend, usb_suspend),
115 DEVMETHOD(device_resume, usb_resume),
116 DEVMETHOD(device_shutdown, usb_shutdown),
121 static driver_t usb_driver = {
123 .methods = usb_methods,
127 /* Host Only Drivers */
128 DRIVER_MODULE(usbus, ohci, usb_driver, usb_devclass, 0, 0);
129 DRIVER_MODULE(usbus, uhci, usb_driver, usb_devclass, 0, 0);
130 DRIVER_MODULE(usbus, ehci, usb_driver, usb_devclass, 0, 0);
131 DRIVER_MODULE(usbus, xhci, usb_driver, usb_devclass, 0, 0);
133 /* Device Only Drivers */
134 DRIVER_MODULE(usbus, at91_udp, usb_driver, usb_devclass, 0, 0);
135 DRIVER_MODULE(usbus, musbotg, usb_driver, usb_devclass, 0, 0);
136 DRIVER_MODULE(usbus, uss820, usb_driver, usb_devclass, 0, 0);
137 DRIVER_MODULE(usbus, octusb, usb_driver, usb_devclass, 0, 0);
139 /* Dual Mode Drivers */
140 DRIVER_MODULE(usbus, dwcotg, usb_driver, usb_devclass, 0, 0);
142 /*------------------------------------------------------------------------*
145 * This function is called from "{ehci,ohci,uhci}_pci_attach()".
146 *------------------------------------------------------------------------*/
148 usb_probe(device_t dev)
154 #if USB_HAVE_ROOT_MOUNT_HOLD
156 usb_root_mount_rel(struct usb_bus *bus)
158 if (bus->bus_roothold != NULL) {
159 DPRINTF("Releasing root mount hold %p\n", bus->bus_roothold);
160 root_mount_rel(bus->bus_roothold);
161 bus->bus_roothold = NULL;
166 /*------------------------------------------------------------------------*
168 *------------------------------------------------------------------------*/
170 usb_attach(device_t dev)
172 struct usb_bus *bus = device_get_ivars(dev);
177 device_printf(dev, "USB device has no ivars\n");
181 #if USB_HAVE_ROOT_MOUNT_HOLD
182 if (usb_no_boot_wait == 0) {
183 /* delay vfs_mountroot until the bus is explored */
184 bus->bus_roothold = root_mount_hold(device_get_nameunit(dev));
187 usb_attach_sub(dev, bus);
189 return (0); /* return success */
192 /*------------------------------------------------------------------------*
194 *------------------------------------------------------------------------*/
196 usb_detach(device_t dev)
198 struct usb_bus *bus = device_get_softc(dev);
203 /* was never setup properly */
206 /* Stop power watchdog */
207 usb_callout_drain(&bus->power_wdog);
209 #if USB_HAVE_ROOT_MOUNT_HOLD
210 /* Let the USB explore process detach all devices. */
211 usb_root_mount_rel(bus);
216 /* Queue detach job */
217 usb_proc_msignal(USB_BUS_EXPLORE_PROC(bus),
218 &bus->detach_msg[0], &bus->detach_msg[1]);
220 /* Wait for detach to complete */
221 usb_proc_mwait(USB_BUS_EXPLORE_PROC(bus),
222 &bus->detach_msg[0], &bus->detach_msg[1]);
226 #if USB_HAVE_PER_BUS_PROCESS
227 /* Get rid of USB callback processes */
229 usb_proc_free(USB_BUS_GIANT_PROC(bus));
230 usb_proc_free(USB_BUS_NON_GIANT_PROC(bus));
232 /* Get rid of USB explore process */
234 usb_proc_free(USB_BUS_EXPLORE_PROC(bus));
236 /* Get rid of control transfer process */
238 usb_proc_free(USB_BUS_CONTROL_XFER_PROC(bus));
247 /*------------------------------------------------------------------------*
249 *------------------------------------------------------------------------*/
251 usb_suspend(device_t dev)
253 struct usb_bus *bus = device_get_softc(dev);
258 /* was never setup properly */
263 usb_proc_msignal(USB_BUS_EXPLORE_PROC(bus),
264 &bus->suspend_msg[0], &bus->suspend_msg[1]);
265 if (usb_no_suspend_wait == 0) {
266 /* wait for suspend callback to be executed */
267 usb_proc_mwait(USB_BUS_EXPLORE_PROC(bus),
268 &bus->suspend_msg[0], &bus->suspend_msg[1]);
275 /*------------------------------------------------------------------------*
277 *------------------------------------------------------------------------*/
279 usb_resume(device_t dev)
281 struct usb_bus *bus = device_get_softc(dev);
286 /* was never setup properly */
291 usb_proc_msignal(USB_BUS_EXPLORE_PROC(bus),
292 &bus->resume_msg[0], &bus->resume_msg[1]);
298 /*------------------------------------------------------------------------*
300 *------------------------------------------------------------------------*/
302 usb_shutdown(device_t dev)
304 struct usb_bus *bus = device_get_softc(dev);
309 /* was never setup properly */
313 device_printf(bus->bdev, "Controller shutdown\n");
316 usb_proc_msignal(USB_BUS_EXPLORE_PROC(bus),
317 &bus->shutdown_msg[0], &bus->shutdown_msg[1]);
318 if (usb_no_shutdown_wait == 0) {
319 /* wait for shutdown callback to be executed */
320 usb_proc_mwait(USB_BUS_EXPLORE_PROC(bus),
321 &bus->shutdown_msg[0], &bus->shutdown_msg[1]);
325 device_printf(bus->bdev, "Controller shutdown complete\n");
330 /*------------------------------------------------------------------------*
333 * This function is used to explore the device tree from the root.
334 *------------------------------------------------------------------------*/
336 usb_bus_explore(struct usb_proc_msg *pm)
339 struct usb_device *udev;
341 bus = ((struct usb_bus_msg *)pm)->bus;
342 udev = bus->devices[USB_ROOT_HUB_ADDR];
344 if (bus->no_explore != 0)
347 if (udev && udev->hub) {
351 bus->driver_added_refcount++;
353 if (bus->driver_added_refcount == 0) {
354 /* avoid zero, hence that is memory default */
355 bus->driver_added_refcount = 1;
360 * The following three lines of code are only here to
363 usb_proc_rewakeup(USB_BUS_CONTROL_XFER_PROC(bus));
364 usb_proc_rewakeup(USB_BUS_GIANT_PROC(bus));
365 usb_proc_rewakeup(USB_BUS_NON_GIANT_PROC(bus));
372 * First update the USB power state!
376 /* Explore the Root USB HUB. */
377 (udev->hub->explore) (udev);
380 #if USB_HAVE_ROOT_MOUNT_HOLD
381 usb_root_mount_rel(bus);
385 /*------------------------------------------------------------------------*
388 * This function is used to detach the device tree from the root.
389 *------------------------------------------------------------------------*/
391 usb_bus_detach(struct usb_proc_msg *pm)
394 struct usb_device *udev;
397 bus = ((struct usb_bus_msg *)pm)->bus;
398 udev = bus->devices[USB_ROOT_HUB_ADDR];
400 /* clear the softc */
401 device_set_softc(dev, NULL);
404 /* detach children first */
406 bus_generic_detach(dev);
410 * Free USB device and all subdevices, if any.
412 usb_free_device(udev, 0);
415 /* clear bdev variable last */
419 /*------------------------------------------------------------------------*
422 * This function is used to suspend the USB contoller.
423 *------------------------------------------------------------------------*/
425 usb_bus_suspend(struct usb_proc_msg *pm)
428 struct usb_device *udev;
432 bus = ((struct usb_bus_msg *)pm)->bus;
433 udev = bus->devices[USB_ROOT_HUB_ADDR];
435 if (udev == NULL || bus->bdev == NULL)
441 * We use the shutdown event here because the suspend and
442 * resume events are reserved for the USB port suspend and
443 * resume. The USB system suspend is implemented like full
444 * shutdown and all connected USB devices will be disconnected
445 * subsequently. At resume all USB devices will be
446 * re-connected again.
449 bus_generic_shutdown(bus->bdev);
451 do_unlock = usbd_enum_lock(udev);
453 err = usbd_set_config_index(udev, USB_UNCONFIG_INDEX);
455 device_printf(bus->bdev, "Could not unconfigure root HUB\n");
458 bus->hw_power_state = 0;
462 if (bus->methods->set_hw_power != NULL)
463 (bus->methods->set_hw_power) (bus);
465 if (bus->methods->set_hw_power_sleep != NULL)
466 (bus->methods->set_hw_power_sleep) (bus, USB_HW_POWER_SUSPEND);
469 usbd_enum_unlock(udev);
474 /*------------------------------------------------------------------------*
477 * This function is used to resume the USB contoller.
478 *------------------------------------------------------------------------*/
480 usb_bus_resume(struct usb_proc_msg *pm)
483 struct usb_device *udev;
487 bus = ((struct usb_bus_msg *)pm)->bus;
488 udev = bus->devices[USB_ROOT_HUB_ADDR];
490 if (udev == NULL || bus->bdev == NULL)
495 do_unlock = usbd_enum_lock(udev);
497 DEVMETHOD(usb_take_controller, NULL); /* dummy */
499 USB_TAKE_CONTROLLER(device_get_parent(bus->bdev));
502 bus->hw_power_state =
503 USB_HW_POWER_CONTROL |
505 USB_HW_POWER_INTERRUPT |
507 USB_HW_POWER_NON_ROOT_HUB;
511 if (bus->methods->set_hw_power_sleep != NULL)
512 (bus->methods->set_hw_power_sleep) (bus, USB_HW_POWER_RESUME);
514 if (bus->methods->set_hw_power != NULL)
515 (bus->methods->set_hw_power) (bus);
517 /* restore USB configuration to index 0 */
518 err = usbd_set_config_index(udev, 0);
520 device_printf(bus->bdev, "Could not configure root HUB\n");
522 /* probe and attach */
523 err = usb_probe_and_attach(udev, USB_IFACE_INDEX_ANY);
525 device_printf(bus->bdev, "Could not probe and "
526 "attach root HUB\n");
530 usbd_enum_unlock(udev);
535 /*------------------------------------------------------------------------*
538 * This function is used to shutdown the USB contoller.
539 *------------------------------------------------------------------------*/
541 usb_bus_shutdown(struct usb_proc_msg *pm)
544 struct usb_device *udev;
548 bus = ((struct usb_bus_msg *)pm)->bus;
549 udev = bus->devices[USB_ROOT_HUB_ADDR];
551 if (udev == NULL || bus->bdev == NULL)
556 bus_generic_shutdown(bus->bdev);
558 do_unlock = usbd_enum_lock(udev);
560 err = usbd_set_config_index(udev, USB_UNCONFIG_INDEX);
562 device_printf(bus->bdev, "Could not unconfigure root HUB\n");
565 bus->hw_power_state = 0;
569 if (bus->methods->set_hw_power != NULL)
570 (bus->methods->set_hw_power) (bus);
572 if (bus->methods->set_hw_power_sleep != NULL)
573 (bus->methods->set_hw_power_sleep) (bus, USB_HW_POWER_SHUTDOWN);
576 usbd_enum_unlock(udev);
582 usb_power_wdog(void *arg)
584 struct usb_bus *bus = arg;
586 USB_BUS_LOCK_ASSERT(bus, MA_OWNED);
588 usb_callout_reset(&bus->power_wdog,
589 4 * hz, usb_power_wdog, arg);
593 * The following line of code is only here to recover from
596 usb_proc_rewakeup(USB_BUS_EXPLORE_PROC(bus)); /* recover from DDB */
602 usb_bus_power_update(bus);
608 /*------------------------------------------------------------------------*
611 * This function attaches USB in context of the explore thread.
612 *------------------------------------------------------------------------*/
614 usb_bus_attach(struct usb_proc_msg *pm)
617 struct usb_device *child;
620 enum usb_dev_speed speed;
622 bus = ((struct usb_bus_msg *)pm)->bus;
627 switch (bus->usbrev) {
629 speed = USB_SPEED_FULL;
630 device_printf(bus->bdev, "12Mbps Full Speed USB v1.0\n");
634 speed = USB_SPEED_FULL;
635 device_printf(bus->bdev, "12Mbps Full Speed USB v1.1\n");
639 speed = USB_SPEED_HIGH;
640 device_printf(bus->bdev, "480Mbps High Speed USB v2.0\n");
644 speed = USB_SPEED_VARIABLE;
645 device_printf(bus->bdev, "480Mbps Wireless USB v2.5\n");
649 speed = USB_SPEED_SUPER;
650 device_printf(bus->bdev, "5.0Gbps Super Speed USB v3.0\n");
654 device_printf(bus->bdev, "Unsupported USB revision\n");
655 #if USB_HAVE_ROOT_MOUNT_HOLD
656 usb_root_mount_rel(bus);
661 /* default power_mask value */
662 bus->hw_power_state =
663 USB_HW_POWER_CONTROL |
665 USB_HW_POWER_INTERRUPT |
667 USB_HW_POWER_NON_ROOT_HUB;
671 /* make sure power is set at least once */
673 if (bus->methods->set_hw_power != NULL) {
674 (bus->methods->set_hw_power) (bus);
677 /* allocate the Root USB device */
679 child = usb_alloc_device(bus->bdev, bus, NULL, 0, 0, 1,
680 speed, USB_MODE_HOST);
682 err = usb_probe_and_attach(child,
683 USB_IFACE_INDEX_ANY);
685 if ((bus->devices[USB_ROOT_HUB_ADDR] == NULL) ||
686 (bus->devices[USB_ROOT_HUB_ADDR]->hub == NULL)) {
687 err = USB_ERR_NO_ROOT_HUB;
697 device_printf(bus->bdev, "Root HUB problem, error=%s\n",
699 #if USB_HAVE_ROOT_MOUNT_HOLD
700 usb_root_mount_rel(bus);
704 /* set softc - we are ready */
705 device_set_softc(dev, bus);
711 /*------------------------------------------------------------------------*
714 * This function creates a thread which runs the USB attach code.
715 *------------------------------------------------------------------------*/
717 usb_attach_sub(device_t dev, struct usb_bus *bus)
720 if (usb_devclass_ptr == NULL)
721 usb_devclass_ptr = devclass_find("usbus");
727 /* Initialise USB process messages */
728 bus->explore_msg[0].hdr.pm_callback = &usb_bus_explore;
729 bus->explore_msg[0].bus = bus;
730 bus->explore_msg[1].hdr.pm_callback = &usb_bus_explore;
731 bus->explore_msg[1].bus = bus;
733 bus->detach_msg[0].hdr.pm_callback = &usb_bus_detach;
734 bus->detach_msg[0].bus = bus;
735 bus->detach_msg[1].hdr.pm_callback = &usb_bus_detach;
736 bus->detach_msg[1].bus = bus;
738 bus->attach_msg[0].hdr.pm_callback = &usb_bus_attach;
739 bus->attach_msg[0].bus = bus;
740 bus->attach_msg[1].hdr.pm_callback = &usb_bus_attach;
741 bus->attach_msg[1].bus = bus;
743 bus->suspend_msg[0].hdr.pm_callback = &usb_bus_suspend;
744 bus->suspend_msg[0].bus = bus;
745 bus->suspend_msg[1].hdr.pm_callback = &usb_bus_suspend;
746 bus->suspend_msg[1].bus = bus;
748 bus->resume_msg[0].hdr.pm_callback = &usb_bus_resume;
749 bus->resume_msg[0].bus = bus;
750 bus->resume_msg[1].hdr.pm_callback = &usb_bus_resume;
751 bus->resume_msg[1].bus = bus;
753 bus->shutdown_msg[0].hdr.pm_callback = &usb_bus_shutdown;
754 bus->shutdown_msg[0].bus = bus;
755 bus->shutdown_msg[1].hdr.pm_callback = &usb_bus_shutdown;
756 bus->shutdown_msg[1].bus = bus;
758 #if USB_HAVE_PER_BUS_PROCESS
759 /* Create USB explore and callback processes */
761 if (usb_proc_create(USB_BUS_GIANT_PROC(bus),
762 &bus->bus_mtx, device_get_nameunit(dev), USB_PRI_MED)) {
763 device_printf(dev, "WARNING: Creation of USB Giant "
764 "callback process failed.\n");
765 } else if (usb_proc_create(USB_BUS_NON_GIANT_PROC(bus),
766 &bus->bus_mtx, device_get_nameunit(dev), USB_PRI_HIGH)) {
767 device_printf(dev, "WARNING: Creation of USB non-Giant "
768 "callback process failed.\n");
769 } else if (usb_proc_create(USB_BUS_EXPLORE_PROC(bus),
770 &bus->bus_mtx, device_get_nameunit(dev), USB_PRI_MED)) {
771 device_printf(dev, "WARNING: Creation of USB explore "
772 "process failed.\n");
773 } else if (usb_proc_create(USB_BUS_CONTROL_XFER_PROC(bus),
774 &bus->bus_mtx, device_get_nameunit(dev), USB_PRI_MED)) {
775 device_printf(dev, "WARNING: Creation of USB control transfer "
776 "process failed.\n");
780 /* Get final attach going */
782 usb_proc_msignal(USB_BUS_EXPLORE_PROC(bus),
783 &bus->attach_msg[0], &bus->attach_msg[1]);
786 /* Do initial explore */
787 usb_needs_explore(bus, 1);
790 SYSUNINIT(usb_bus_unload, SI_SUB_KLD, SI_ORDER_ANY, usb_bus_unload, NULL);
792 /*------------------------------------------------------------------------*
793 * usb_bus_mem_flush_all_cb
794 *------------------------------------------------------------------------*/
797 usb_bus_mem_flush_all_cb(struct usb_bus *bus, struct usb_page_cache *pc,
798 struct usb_page *pg, usb_size_t size, usb_size_t align)
800 usb_pc_cpu_flush(pc);
804 /*------------------------------------------------------------------------*
805 * usb_bus_mem_flush_all - factored out code
806 *------------------------------------------------------------------------*/
809 usb_bus_mem_flush_all(struct usb_bus *bus, usb_bus_mem_cb_t *cb)
812 cb(bus, &usb_bus_mem_flush_all_cb);
817 /*------------------------------------------------------------------------*
818 * usb_bus_mem_alloc_all_cb
819 *------------------------------------------------------------------------*/
822 usb_bus_mem_alloc_all_cb(struct usb_bus *bus, struct usb_page_cache *pc,
823 struct usb_page *pg, usb_size_t size, usb_size_t align)
825 /* need to initialize the page cache */
826 pc->tag_parent = bus->dma_parent_tag;
828 if (usb_pc_alloc_mem(pc, pg, size, align)) {
829 bus->alloc_failed = 1;
834 /*------------------------------------------------------------------------*
835 * usb_bus_mem_alloc_all - factored out code
840 *------------------------------------------------------------------------*/
842 usb_bus_mem_alloc_all(struct usb_bus *bus, bus_dma_tag_t dmat,
843 usb_bus_mem_cb_t *cb)
845 bus->alloc_failed = 0;
847 mtx_init(&bus->bus_mtx, device_get_nameunit(bus->parent),
848 NULL, MTX_DEF | MTX_RECURSE);
850 usb_callout_init_mtx(&bus->power_wdog,
853 TAILQ_INIT(&bus->intr_q.head);
856 usb_dma_tag_setup(bus->dma_parent_tag, bus->dma_tags,
857 dmat, &bus->bus_mtx, NULL, 32, USB_BUS_DMA_TAG_MAX);
859 if ((bus->devices_max > USB_MAX_DEVICES) ||
860 (bus->devices_max < USB_MIN_DEVICES) ||
861 (bus->devices == NULL)) {
862 DPRINTFN(0, "Devices field has not been "
863 "initialised properly\n");
864 bus->alloc_failed = 1; /* failure */
868 cb(bus, &usb_bus_mem_alloc_all_cb);
871 if (bus->alloc_failed) {
872 usb_bus_mem_free_all(bus, cb);
874 return (bus->alloc_failed);
877 /*------------------------------------------------------------------------*
878 * usb_bus_mem_free_all_cb
879 *------------------------------------------------------------------------*/
882 usb_bus_mem_free_all_cb(struct usb_bus *bus, struct usb_page_cache *pc,
883 struct usb_page *pg, usb_size_t size, usb_size_t align)
889 /*------------------------------------------------------------------------*
890 * usb_bus_mem_free_all - factored out code
891 *------------------------------------------------------------------------*/
893 usb_bus_mem_free_all(struct usb_bus *bus, usb_bus_mem_cb_t *cb)
897 cb(bus, &usb_bus_mem_free_all_cb);
899 usb_dma_tag_unsetup(bus->dma_parent_tag);
902 mtx_destroy(&bus->bus_mtx);
905 /* convenience wrappers */
907 usb_proc_explore_mwait(struct usb_device *udev, void *pm1, void *pm2)
909 usb_proc_mwait(USB_BUS_EXPLORE_PROC(udev->bus), pm1, pm2);
913 usb_proc_explore_msignal(struct usb_device *udev, void *pm1, void *pm2)
915 return (usb_proc_msignal(USB_BUS_EXPLORE_PROC(udev->bus), pm1, pm2));
919 usb_proc_explore_lock(struct usb_device *udev)
921 USB_BUS_LOCK(udev->bus);
925 usb_proc_explore_unlock(struct usb_device *udev)
927 USB_BUS_UNLOCK(udev->bus);