2 * $NetBSD: usb.c,v 1.68 2002/02/20 20:30:12 christos Exp $
3 * $FreeBSD: src/sys/dev/usb/usb.c,v 1.106 2005/03/27 15:31:23 iedowse Exp $
4 * $DragonFly: src/sys/bus/usb/usb.c,v 1.42 2008/05/21 19:56:46 mneumann Exp $
7 /* Also already merged from NetBSD:
8 * $NetBSD: usb.c,v 1.70 2002/05/09 21:54:32 augustss Exp $
9 * $NetBSD: usb.c,v 1.71 2002/06/01 23:51:04 lukem Exp $
10 * $NetBSD: usb.c,v 1.73 2002/09/23 05:51:19 simonb Exp $
11 * $NetBSD: usb.c,v 1.80 2003/11/07 17:03:25 wiz Exp $
15 * Copyright (c) 1998 The NetBSD Foundation, Inc.
16 * All rights reserved.
18 * This code is derived from software contributed to The NetBSD Foundation
19 * by Lennart Augustsson (lennart@augustsson.net) at
20 * Carlstedt Research & Technology.
22 * Redistribution and use in source and binary forms, with or without
23 * modification, are permitted provided that the following conditions
25 * 1. Redistributions of source code must retain the above copyright
26 * notice, this list of conditions and the following disclaimer.
27 * 2. Redistributions in binary form must reproduce the above copyright
28 * notice, this list of conditions and the following disclaimer in the
29 * documentation and/or other materials provided with the distribution.
30 * 3. All advertising materials mentioning features or use of this software
31 * must display the following acknowledgement:
32 * This product includes software developed by the NetBSD
33 * Foundation, Inc. and its contributors.
34 * 4. Neither the name of The NetBSD Foundation nor the names of its
35 * contributors may be used to endorse or promote products derived
36 * from this software without specific prior written permission.
38 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
39 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
40 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
41 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
42 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
43 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
44 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
45 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
46 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
47 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
48 * POSSIBILITY OF SUCH DAMAGE.
52 * USB specifications and other documentation can be found at
53 * http://www.usb.org/developers/docs/ and
54 * http://www.usb.org/developers/devclass_docs/
57 #include <sys/param.h>
58 #include <sys/systm.h>
59 #include <sys/kernel.h>
61 #include <sys/malloc.h>
62 #include <sys/unistd.h>
63 #include <sys/module.h>
65 #include <sys/fcntl.h>
66 #include <sys/filio.h>
68 #include <sys/kthread.h>
71 #include <sys/device.h>
73 #include <sys/select.h>
74 #include <sys/vnode.h>
75 #include <sys/signalvar.h>
76 #include <sys/sysctl.h>
77 #include <sys/thread2.h>
79 #include <bus/usb/usb.h>
80 #include <bus/usb/usbdi.h>
81 #include <bus/usb/usbdi_util.h>
83 #define USBUNIT(d) (minor(d)) /* usb_discover device nodes, kthread */
84 #define USB_DEV_MINOR 255 /* event queue device */
86 MALLOC_DEFINE(M_USB
, "USB", "USB");
87 MALLOC_DEFINE(M_USBDEV
, "USBdev", "USB device");
88 MALLOC_DEFINE(M_USBHC
, "USBHC", "USB host controller");
92 #include <bus/usb/usbdivar.h>
93 #include <bus/usb/usb_quirks.h>
95 /* Define this unconditionally in case a kernel module is loaded that
96 * has been compiled with debugging options.
98 SYSCTL_NODE(_hw
, OID_AUTO
, usb
, CTLFLAG_RW
, 0, "USB debugging");
101 #define DPRINTF(x) if (usbdebug) kprintf x
102 #define DPRINTFN(n,x) if (usbdebug>(n)) kprintf x
104 SYSCTL_INT(_hw_usb
, OID_AUTO
, debug
, CTLFLAG_RW
,
105 &usbdebug
, 0, "usb debug level");
107 * 0 - do usual exploration
108 * 1 - do not use timeout exploration
109 * >1 - do no exploration
111 int usb_noexplore
= 0;
114 #define DPRINTFN(n,x)
118 device_t sc_dev
; /* base device */
120 usbd_bus_handle sc_bus
; /* USB controller */
121 struct usbd_port sc_port
; /* dummy port for root hub */
123 struct thread
*sc_event_thread
;
129 TAILQ_HEAD(, usb_task
) tasks
;
130 struct thread
*task_thread_proc
;
132 int taskcreated
; /* task thread exists. */
134 static struct usb_taskq usb_taskq
[USB_NUM_TASKQS
];
142 struct dev_ops usb_ops
= {
143 { "usb", USB_CDEV_MAJOR
, 0 },
151 static void usb_discover(void *);
152 static bus_child_detached_t usb_child_detached
;
153 static void usb_create_event_thread(void *);
154 static void usb_event_thread(void *);
155 static void usb_task_thread(void *);
157 static cdev_t usb_dev
; /* The /dev/usb device. */
158 static int usb_ndevs
; /* Number of /dev/usbN devices. */
160 #define USB_MAX_EVENTS 100
163 TAILQ_ENTRY(usb_event_q
) next
;
165 static TAILQ_HEAD(, usb_event_q
) usb_events
=
166 TAILQ_HEAD_INITIALIZER(usb_events
);
167 static int usb_nevents
= 0;
168 static struct selinfo usb_selevent
;
169 static struct proc
*usb_async_proc
; /* process that wants USB SIGIO */
170 static int usb_dev_open
= 0;
171 static void usb_add_event(int, struct usb_event
*);
173 static int usb_get_next_event(struct usb_event
*);
175 static const char *usbrev_str
[] = USBREV_STR
;
177 static device_probe_t usb_match
;
178 static device_attach_t usb_attach
;
179 static device_detach_t usb_detach
;
181 static devclass_t usb_devclass
;
183 static kobj_method_t usb_methods
[] = {
184 DEVMETHOD(device_probe
, usb_match
),
185 DEVMETHOD(device_attach
, usb_attach
),
186 DEVMETHOD(device_detach
, usb_detach
),
187 DEVMETHOD(bus_child_detached
, usb_child_detached
),
188 DEVMETHOD(device_suspend
, bus_generic_suspend
),
189 DEVMETHOD(device_resume
, bus_generic_resume
),
190 DEVMETHOD(device_shutdown
, bus_generic_shutdown
),
194 static driver_t usb_driver
= {
197 sizeof(struct usb_softc
)
200 MODULE_DEPEND(usb
, usb
, 1, 1, 1);
201 MODULE_VERSION(usb
, 1);
204 usb_match(device_t self
)
206 DPRINTF(("usbd_match\n"));
207 return (UMATCH_GENERIC
);
211 usb_attach(device_t self
)
213 struct usb_softc
*sc
= device_get_softc(self
);
214 void *aux
= device_get_ivars(self
);
216 usbd_device_handle dev
;
224 DPRINTF(("usbd_attach\n"));
228 sc
->sc_bus
->usbctl
= sc
;
229 sc
->sc_port
.power
= USB_MAX_POWER
;
231 device_printf(sc
->sc_dev
, "");
232 usbrev
= sc
->sc_bus
->usbrev
;
233 kprintf("USB revision %s", usbrev_str
[usbrev
]);
237 speed
= USB_SPEED_FULL
;
240 speed
= USB_SPEED_HIGH
;
243 kprintf(", not supported\n");
250 /* Make sure not to use tsleep() if we are cold booting. */
252 sc
->sc_bus
->use_polling
++;
255 ue
.u
.ue_ctrlr
.ue_bus
= device_get_unit(sc
->sc_dev
);
256 usb_add_event(USB_EVENT_CTRLR_ATTACH
, &ue
);
258 #ifdef USB_USE_SOFTINTR
259 #ifdef __HAVE_GENERIC_SOFT_INTERRUPTS
260 /* XXX we should have our own level */
261 sc
->sc_bus
->soft
= softintr_establish(IPL_SOFTNET
,
262 sc
->sc_bus
->methods
->soft_intr
, sc
->sc_bus
);
263 if (sc
->sc_bus
->soft
== NULL
) {
264 device_printf(sc
->sc_dev
, "can't register softintr\n");
269 callout_init(&sc
->sc_bus
->softi
);
273 err
= usbd_new_device(sc
->sc_dev
, sc
->sc_bus
, 0, speed
, 0,
276 dev
= sc
->sc_port
.device
;
277 if (dev
->hub
== NULL
) {
279 device_printf(sc
->sc_dev
,
280 "root device is not a hub\n");
283 sc
->sc_bus
->root_hub
= dev
;
286 * Turning this code off will delay attachment of USB devices
287 * until the USB event thread is running, which means that
288 * the keyboard will not work until after cold boot.
292 * XXX Exploring high speed device here will
295 if (speed
!= USB_SPEED_HIGH
)
296 dev
->hub
->explore(sc
->sc_bus
->root_hub
);
300 device_printf(sc
->sc_dev
,
301 "root hub problem, error=%d\n", err
);
306 sc
->sc_bus
->use_polling
--;
309 usb_create_event_thread(sc
);
310 /* The per controller devices (used for usb_discover) */
311 /* XXX This is redundant now, but old usbd's will want it */
312 dev_ops_add(&usb_ops
, -1, device_get_unit(self
));
313 tmp_dev
= make_dev(&usb_ops
, device_get_unit(self
),
314 UID_ROOT
, GID_OPERATOR
, 0660,
315 "usb%d", device_get_unit(self
));
316 sc
->sc_usbdev
= reference_dev(tmp_dev
);
317 if (usb_ndevs
++ == 0) {
318 /* The device spitting out events */
319 dev_ops_add(&usb_ops
, -1, USB_DEV_MINOR
);
320 tmp_dev
= make_dev(&usb_ops
, USB_DEV_MINOR
,
321 UID_ROOT
, GID_OPERATOR
, 0660, "usb");
322 usb_dev
= reference_dev(tmp_dev
);
328 static const char *taskq_names
[] = USB_TASKQ_NAMES
;
331 usb_create_event_thread(void *arg
)
333 struct usb_softc
*sc
= arg
;
336 if (kthread_create(usb_event_thread
, sc
, &sc
->sc_event_thread
,
337 "%s", device_get_nameunit(sc
->sc_dev
))) {
338 device_printf(sc
->sc_dev
,
339 "unable to create event thread for\n");
340 panic("usb_create_event_thread");
343 for (i
= 0; i
< USB_NUM_TASKQS
; i
++) {
344 struct usb_taskq
*taskq
= &usb_taskq
[i
];
346 if (taskq
->taskcreated
== 0) {
347 taskq
->taskcreated
= 1;
348 taskq
->name
= taskq_names
[i
];
349 TAILQ_INIT(&taskq
->tasks
);
350 if (kthread_create(usb_task_thread
, taskq
,
351 &taskq
->task_thread_proc
, taskq
->name
)) {
352 kprintf("unable to create task thread\n");
353 panic("usb_create_event_thread task");
360 * Add a task to be performed by the task thread. This function can be
361 * called from any context and the task will be executed in a process
365 usb_add_task(usbd_device_handle dev
, struct usb_task
*task
, int queue
)
367 struct usb_taskq
*taskq
;
371 taskq
= &usb_taskq
[queue
];
372 if (task
->queue
== -1) {
373 DPRINTFN(2,("usb_add_task: task=%p\n", task
));
374 TAILQ_INSERT_TAIL(&taskq
->tasks
, task
, next
);
377 DPRINTFN(3,("usb_add_task: task=%p on q\n", task
));
379 wakeup(&taskq
->tasks
);
385 usb_do_task(usbd_device_handle dev
, struct usb_task
*task
, int queue
,
388 struct usb_taskq
*taskq
;
392 taskq
= &usb_taskq
[queue
];
393 if (task
->queue
== -1) {
394 DPRINTFN(2,("usb_add_task: task=%p\n", task
));
395 TAILQ_INSERT_TAIL(&taskq
->tasks
, task
, next
);
398 DPRINTFN(3,("usb_add_task: task=%p on q\n", task
));
400 wakeup(&taskq
->tasks
);
402 /* Wait until task is finished */
403 tsleep((&taskq
->tasks
+ 1), 0, "usbdotsk", time_out
);
409 usb_rem_task(usbd_device_handle dev
, struct usb_task
*task
)
412 if (task
->queue
!= -1) {
413 TAILQ_REMOVE(&usb_taskq
[task
->queue
].tasks
, task
, next
);
420 usb_event_thread(void *arg
)
422 struct usb_softc
*sc
= arg
;
424 DPRINTF(("usb_event_thread: start\n"));
427 * In case this controller is a companion controller to an
428 * EHCI controller we need to wait until the EHCI controller
429 * has grabbed the port.
430 * XXX It would be nicer to do this with a tsleep(), but I don't
431 * know how to synchronize the creation of the threads so it
434 usb_delay_ms(sc
->sc_bus
, 500);
438 /* Make sure first discover does something. */
439 sc
->sc_bus
->needs_explore
= 1;
442 while (!sc
->sc_dying
) {
444 if (usb_noexplore
< 2)
448 tsleep(&sc
->sc_bus
->needs_explore
, 0, "usbevt",
449 usb_noexplore
? 0 : hz
* 60);
451 tsleep(&sc
->sc_bus
->needs_explore
, 0, "usbevt", hz
* 60);
453 DPRINTFN(2,("usb_event_thread: woke up\n"));
455 sc
->sc_event_thread
= NULL
;
459 /* In case parent is waiting for us to exit. */
462 DPRINTF(("usb_event_thread: exit\n"));
467 usb_task_thread(void *arg
)
469 struct usb_task
*task
;
470 struct usb_taskq
*taskq
;
475 DPRINTF(("usb_task_thread: start taskq %s\n", taskq
->name
));
477 while (usb_ndevs
> 0) {
478 task
= TAILQ_FIRST(&taskq
->tasks
);
480 tsleep(&taskq
->tasks
, 0, "usbtsk", 0);
481 task
= TAILQ_FIRST(&taskq
->tasks
);
483 DPRINTFN(2,("usb_task_thread: woke up task=%p\n", task
));
485 TAILQ_REMOVE(&taskq
->tasks
, task
, next
);
488 task
->fun(task
->arg
);
490 wakeup((&taskq
->tasks
+ 1));
496 taskq
->taskcreated
= 0;
497 wakeup(&taskq
->taskcreated
);
499 DPRINTF(("usb_event_thread: exit\n"));
503 usbopen(struct dev_open_args
*ap
)
505 cdev_t dev
= ap
->a_head
.a_dev
;
506 int unit
= USBUNIT(dev
);
507 struct usb_softc
*sc
;
509 if (unit
== USB_DEV_MINOR
) {
513 usb_async_proc
= NULL
;
517 sc
= devclass_get_softc(usb_devclass
, unit
);
528 usbread(struct dev_read_args
*ap
)
530 cdev_t dev
= ap
->a_head
.a_dev
;
531 struct uio
*uio
= ap
->a_uio
;
533 int unit
= USBUNIT(dev
);
536 if (unit
!= USB_DEV_MINOR
)
539 if (uio
->uio_resid
!= sizeof(struct usb_event
))
545 n
= usb_get_next_event(&ue
);
548 if (ap
->a_ioflag
& IO_NDELAY
) {
552 error
= tsleep(&usb_events
, PCATCH
, "usbrea", 0);
558 error
= uiomove((void *)&ue
, uio
->uio_resid
, uio
);
564 usbclose(struct dev_close_args
*ap
)
566 cdev_t dev
= ap
->a_head
.a_dev
;
567 int unit
= USBUNIT(dev
);
569 if (unit
== USB_DEV_MINOR
) {
570 usb_async_proc
= NULL
;
578 usbioctl(struct dev_ioctl_args
*ap
)
580 cdev_t devt
= ap
->a_head
.a_dev
;
581 struct usb_softc
*sc
;
582 int unit
= USBUNIT(devt
);
584 if (unit
== USB_DEV_MINOR
) {
587 if (*(int *)ap
->a_data
)
588 usb_async_proc
= curproc
;
590 usb_async_proc
= NULL
;
598 sc
= devclass_get_softc(usb_devclass
, unit
);
604 /* This part should be deleted */
609 struct usb_ctl_request
*ur
= (void *)ap
->a_data
;
610 int len
= UGETW(ur
->ucr_request
.wLength
);
614 int addr
= ur
->ucr_addr
;
618 DPRINTF(("usbioctl: USB_REQUEST addr=%d len=%d\n", addr
, len
));
619 if (len
< 0 || len
> 32768)
621 if (addr
< 0 || addr
>= USB_MAX_DEVICES
||
622 sc
->sc_bus
->devices
[addr
] == 0)
625 iov
.iov_base
= (caddr_t
)ur
->ucr_data
;
631 uio
.uio_segflg
= UIO_USERSPACE
;
633 ur
->ucr_request
.bmRequestType
& UT_READ
?
634 UIO_READ
: UIO_WRITE
;
635 uio
.uio_td
= curthread
;
636 ptr
= kmalloc(len
, M_TEMP
, M_WAITOK
);
637 if (uio
.uio_rw
== UIO_WRITE
) {
638 error
= uiomove(ptr
, len
, &uio
);
643 err
= usbd_do_request_flags(sc
->sc_bus
->devices
[addr
],
644 &ur
->ucr_request
, ptr
, ur
->ucr_flags
, &ur
->ucr_actlen
,
645 USBD_DEFAULT_TIMEOUT
);
651 if (uio
.uio_rw
== UIO_READ
) {
652 error
= uiomove(ptr
, len
, &uio
);
665 struct usb_device_info
*di
= (void *)ap
->a_data
;
666 int addr
= di
->udi_addr
;
667 usbd_device_handle dev
;
669 if (addr
< 1 || addr
>= USB_MAX_DEVICES
)
671 dev
= sc
->sc_bus
->devices
[addr
];
674 usbd_fill_deviceinfo(dev
, di
, 1);
678 case USB_DEVICESTATS
:
679 *(struct usb_device_stats
*)ap
->a_data
= sc
->sc_bus
->stats
;
689 usbpoll(struct dev_poll_args
*ap
)
691 cdev_t dev
= ap
->a_head
.a_dev
;
693 int unit
= USBUNIT(dev
);
695 if (unit
== USB_DEV_MINOR
) {
697 mask
= POLLIN
| POLLRDNORM
;
700 if (ap
->a_events
& mask
&& usb_nevents
> 0)
701 revents
|= ap
->a_events
& mask
;
702 if (revents
== 0 && ap
->a_events
& mask
)
703 selrecord(curthread
, &usb_selevent
);
705 ap
->a_events
= revents
;
709 return (0); /* select/poll never wakes up - back compat */
713 /* Explore device tree from the root. */
715 usb_discover(void *v
)
717 struct usb_softc
*sc
= v
;
719 DPRINTFN(2,("usb_discover\n"));
721 if (usb_noexplore
> 1)
726 * We need mutual exclusion while traversing the device tree,
727 * but this is guaranteed since this function is only called
728 * from the event thread for the controller.
731 while (sc
->sc_bus
->needs_explore
&& !sc
->sc_dying
) {
732 sc
->sc_bus
->needs_explore
= 0;
735 sc
->sc_bus
->root_hub
->hub
->explore(sc
->sc_bus
->root_hub
);
743 usb_needs_explore(usbd_device_handle dev
)
745 DPRINTFN(2,("usb_needs_explore\n"));
746 dev
->bus
->needs_explore
= 1;
747 wakeup(&dev
->bus
->needs_explore
);
750 /* Called from a critical section */
752 usb_get_next_event(struct usb_event
*ue
)
754 struct usb_event_q
*ueq
;
756 if (usb_nevents
<= 0)
758 ueq
= TAILQ_FIRST(&usb_events
);
761 kprintf("usb: usb_nevents got out of sync! %d\n", usb_nevents
);
767 TAILQ_REMOVE(&usb_events
, ueq
, next
);
768 kfree(ueq
, M_USBDEV
);
774 usbd_add_dev_event(int type
, usbd_device_handle udev
)
778 usbd_fill_deviceinfo(udev
, &ue
.u
.ue_device
, USB_EVENT_IS_ATTACH(type
));
779 usb_add_event(type
, &ue
);
783 usbd_add_drv_event(int type
, usbd_device_handle udev
, device_t dev
)
787 ue
.u
.ue_driver
.ue_cookie
= udev
->cookie
;
788 strncpy(ue
.u
.ue_driver
.ue_devname
, device_get_nameunit(dev
),
789 sizeof ue
.u
.ue_driver
.ue_devname
);
790 usb_add_event(type
, &ue
);
794 usb_add_event(int type
, struct usb_event
*uep
)
796 struct usb_event_q
*ueq
;
798 struct timeval thetime
;
800 ueq
= kmalloc(sizeof *ueq
, M_USBDEV
, M_INTWAIT
);
802 ueq
->ue
.ue_type
= type
;
804 TIMEVAL_TO_TIMESPEC(&thetime
, &ueq
->ue
.ue_time
);
807 if (USB_EVENT_IS_DETACH(type
)) {
808 struct usb_event_q
*ueqi
, *ueqi_next
;
810 for (ueqi
= TAILQ_FIRST(&usb_events
); ueqi
; ueqi
= ueqi_next
) {
811 ueqi_next
= TAILQ_NEXT(ueqi
, next
);
812 if (ueqi
->ue
.u
.ue_driver
.ue_cookie
.cookie
==
813 uep
->u
.ue_device
.udi_cookie
.cookie
) {
814 TAILQ_REMOVE(&usb_events
, ueqi
, next
);
815 kfree(ueqi
, M_USBDEV
);
817 ueqi_next
= TAILQ_FIRST(&usb_events
);
821 if (usb_nevents
>= USB_MAX_EVENTS
) {
822 /* Too many queued events, drop an old one. */
823 DPRINTF(("usb: event dropped\n"));
824 usb_get_next_event(&ue
);
826 TAILQ_INSERT_TAIL(&usb_events
, ueq
, next
);
829 selwakeup(&usb_selevent
);
830 if (usb_async_proc
!= NULL
) {
831 ksignal(usb_async_proc
, SIGIO
);
837 usb_schedsoftintr(usbd_bus_handle bus
)
839 DPRINTFN(10,("usb_schedsoftintr: polling=%d\n", bus
->use_polling
));
840 #ifdef USB_USE_SOFTINTR
841 if (bus
->use_polling
) {
842 bus
->methods
->soft_intr(bus
);
844 #ifdef __HAVE_GENERIC_SOFT_INTERRUPTS
845 softintr_schedule(bus
->soft
);
847 if (!callout_pending(&bus
->softi
))
848 callout_reset(&bus
->softi
, 0, bus
->methods
->soft_intr
,
850 #endif /* __HAVE_GENERIC_SOFT_INTERRUPTS */
853 bus
->methods
->soft_intr(bus
);
854 #endif /* USB_USE_SOFTINTR */
858 usb_detach(device_t self
)
860 struct usb_softc
*sc
= device_get_softc(self
);
863 DPRINTF(("usb_detach: start\n"));
867 /* Make all devices disconnect. */
868 if (sc
->sc_port
.device
!= NULL
)
869 usb_disconnect_port(&sc
->sc_port
, self
);
871 /* Kill off event thread. */
872 if (sc
->sc_event_thread
!= NULL
) {
873 wakeup(&sc
->sc_bus
->needs_explore
);
874 if (tsleep(sc
, 0, "usbdet", hz
* 60))
875 device_printf(sc
->sc_dev
,
876 "event thread didn't die\n");
877 DPRINTF(("usb_detach: event thread dead\n"));
880 destroy_dev(sc
->sc_usbdev
);
881 if (--usb_ndevs
== 0) {
884 destroy_dev(usb_dev
);
887 for (i
= 0; i
< USB_NUM_TASKQS
; i
++) {
888 struct usb_taskq
*taskq
= &usb_taskq
[i
];
889 wakeup(&taskq
->tasks
);
890 if (tsleep(&taskq
->taskcreated
, 0, "usbtdt",
892 kprintf("usb task thread %s didn't die\n",
900 #ifdef USB_USE_SOFTINTR
901 #ifdef __HAVE_GENERIC_SOFT_INTERRUPTS
902 if (sc
->sc_bus
->soft
!= NULL
) {
903 softintr_disestablish(sc
->sc_bus
->soft
);
904 sc
->sc_bus
->soft
= NULL
;
907 callout_stop(&sc
->sc_bus
->softi
);
911 ue
.u
.ue_ctrlr
.ue_bus
= device_get_unit(sc
->sc_dev
);
912 usb_add_event(USB_EVENT_CTRLR_DETACH
, &ue
);
918 usb_child_detached(device_t self
, device_t child
)
920 struct usb_softc
*sc
= device_get_softc(self
);
922 /* XXX, should check it is the right device. */
923 sc
->sc_port
.device
= NULL
;
926 DRIVER_MODULE(usb
, ohci
, usb_driver
, usb_devclass
, 0, 0);
927 DRIVER_MODULE(usb
, uhci
, usb_driver
, usb_devclass
, 0, 0);
928 DRIVER_MODULE(usb
, ehci
, usb_driver
, usb_devclass
, 0, 0);