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 1.50 2008/09/26 08:21:22 hasso 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 * XXX: This is a hack! If your USB keyboard doesn't work
102 * early at boot, try setting this tunable to 0 from
105 * set hw.usb.hack_defer_exploration=0
107 static int hack_defer_exploration
= 1;
110 #define DPRINTF(x) if (usbdebug) kprintf x
111 #define DPRINTFN(n,x) if (usbdebug>(n)) kprintf x
113 SYSCTL_INT(_hw_usb
, OID_AUTO
, debug
, CTLFLAG_RW
,
114 &usbdebug
, 0, "usb debug level");
117 * 0 - do usual exploration
118 * 1 - do not use timeout exploration
119 * >1 - do no exploration
121 int usb_noexplore
= 0;
124 #define DPRINTFN(n,x)
129 TAILQ_ENTRY(usb_softc
) sc_coldexplist
; /* cold needs-explore list */
130 usbd_bus_handle sc_bus
; /* USB controller */
131 struct usbd_port sc_port
; /* dummy port for root hub */
133 struct thread
*sc_event_thread
;
139 TAILQ_HEAD(, usb_task
) tasks
;
140 struct thread
*task_thread_proc
;
142 int taskcreated
; /* task thread exists. */
144 static struct usb_taskq usb_taskq
[USB_NUM_TASKQS
];
152 struct dev_ops usb_ops
= {
153 { "usb", USB_CDEV_MAJOR
, 0 },
161 static void usb_discover(device_t
);
162 static bus_child_detached_t usb_child_detached
;
163 static void usb_create_event_thread(device_t
);
164 static void usb_event_thread(void *);
165 static void usb_task_thread(void *);
167 static cdev_t usb_dev
; /* The /dev/usb device. */
168 static int usb_ndevs
; /* Number of /dev/usbN devices. */
169 /* Busses to explore at the end of boot-time device configuration */
170 static TAILQ_HEAD(, usb_softc
) usb_coldexplist
=
171 TAILQ_HEAD_INITIALIZER(usb_coldexplist
);
173 #define USB_MAX_EVENTS 100
176 TAILQ_ENTRY(usb_event_q
) next
;
178 static TAILQ_HEAD(, usb_event_q
) usb_events
=
179 TAILQ_HEAD_INITIALIZER(usb_events
);
180 static int usb_nevents
= 0;
181 static struct selinfo usb_selevent
;
182 static struct proc
*usb_async_proc
; /* process that wants USB SIGIO */
183 static int usb_dev_open
= 0;
184 static void usb_add_event(int, struct usb_event
*);
186 static int usb_get_next_event(struct usb_event
*);
188 static const char *usbrev_str
[] = USBREV_STR
;
190 static device_probe_t usb_match
;
191 static device_attach_t usb_attach
;
192 static device_detach_t usb_detach
;
194 static devclass_t usb_devclass
;
196 static kobj_method_t usb_methods
[] = {
197 DEVMETHOD(device_probe
, usb_match
),
198 DEVMETHOD(device_attach
, usb_attach
),
199 DEVMETHOD(device_detach
, usb_detach
),
200 DEVMETHOD(bus_child_detached
, usb_child_detached
),
201 DEVMETHOD(device_suspend
, bus_generic_suspend
),
202 DEVMETHOD(device_resume
, bus_generic_resume
),
203 DEVMETHOD(device_shutdown
, bus_generic_shutdown
),
207 static driver_t usb_driver
= {
210 sizeof(struct usb_softc
)
213 MODULE_DEPEND(usb
, usb
, 1, 1, 1);
214 MODULE_VERSION(usb
, 1);
217 usb_match(device_t self
)
219 DPRINTF(("usb_match\n"));
220 return (UMATCH_GENERIC
);
224 usb_attach(device_t self
)
226 struct usb_softc
*sc
= device_get_softc(self
);
227 void *aux
= device_get_ivars(self
);
229 usbd_device_handle dev
;
235 TUNABLE_INT_FETCH("hw.usb.hack_defer_exploration",
236 &hack_defer_exploration
);
238 DPRINTF(("usb_attach\n"));
242 sc
->sc_bus
->usbctl
= sc
;
243 sc
->sc_port
.power
= USB_MAX_POWER
;
245 usbrev
= sc
->sc_bus
->usbrev
;
246 device_printf(self
, "USB revision %s", usbrev_str
[usbrev
]);
250 speed
= USB_SPEED_FULL
;
253 speed
= USB_SPEED_HIGH
;
256 kprintf(", not supported\n");
262 /* Make sure not to use tsleep() if we are cold booting. */
263 if (hack_defer_exploration
&& cold
)
264 sc
->sc_bus
->use_polling
++;
266 ue
.u
.ue_ctrlr
.ue_bus
= device_get_unit(self
);
267 usb_add_event(USB_EVENT_CTRLR_ATTACH
, &ue
);
269 #ifdef USB_USE_SOFTINTR
270 callout_init(&sc
->sc_bus
->softi
);
273 err
= usbd_new_device(self
, sc
->sc_bus
, 0, speed
, 0, &sc
->sc_port
);
275 dev
= sc
->sc_port
.device
;
276 if (dev
->hub
== NULL
) {
279 "root device is not a hub\n");
282 sc
->sc_bus
->root_hub
= dev
;
285 * Turning this code off will delay attachment of USB devices
286 * until the USB event thread is running, which means that
287 * the keyboard will not work until after cold boot.
290 if (hack_defer_exploration
) {
291 /* Explore high-speed busses before others. */
292 if (speed
== USB_SPEED_HIGH
)
293 dev
->hub
->explore(sc
->sc_bus
->root_hub
);
295 TAILQ_INSERT_TAIL(&usb_coldexplist
, sc
,
299 * XXX Exploring high speed devices here will
302 if (speed
!= USB_SPEED_HIGH
)
303 dev
->hub
->explore(sc
->sc_bus
->root_hub
);
309 "root hub problem, error=%d\n", err
);
312 if (hack_defer_exploration
&& cold
)
313 sc
->sc_bus
->use_polling
--;
315 usb_create_event_thread(self
);
318 * The per controller devices (used for usb_discover)
319 * XXX This is redundant now, but old usbd's will want it
321 tmp_dev
= make_dev(&usb_ops
, device_get_unit(self
),
322 UID_ROOT
, GID_OPERATOR
, 0660,
323 "usb%d", device_get_unit(self
));
324 sc
->sc_usbdev
= reference_dev(tmp_dev
);
325 if (usb_ndevs
++ == 0) {
326 /* The device spitting out events */
327 tmp_dev
= make_dev(&usb_ops
, USB_DEV_MINOR
,
328 UID_ROOT
, GID_OPERATOR
, 0660, "usb");
329 usb_dev
= reference_dev(tmp_dev
);
335 static const char *taskq_names
[] = USB_TASKQ_NAMES
;
338 usb_create_event_thread(device_t self
)
340 struct usb_softc
*sc
= device_get_softc(self
);
343 if (kthread_create(usb_event_thread
, self
, &sc
->sc_event_thread
,
344 "%s", device_get_nameunit(self
))) {
346 "unable to create event thread for\n");
347 panic("usb_create_event_thread");
350 for (i
= 0; i
< USB_NUM_TASKQS
; i
++) {
351 struct usb_taskq
*taskq
= &usb_taskq
[i
];
353 if (taskq
->taskcreated
== 0) {
354 taskq
->taskcreated
= 1;
355 taskq
->name
= taskq_names
[i
];
356 TAILQ_INIT(&taskq
->tasks
);
357 if (kthread_create(usb_task_thread
, taskq
,
358 &taskq
->task_thread_proc
, taskq
->name
)) {
359 kprintf("unable to create task thread\n");
360 panic("usb_create_event_thread task");
367 * Add a task to be performed by the task thread. This function can be
368 * called from any context and the task will be executed in a process
372 usb_add_task(usbd_device_handle dev
, struct usb_task
*task
, int queue
)
374 struct usb_taskq
*taskq
;
378 taskq
= &usb_taskq
[queue
];
379 if (task
->queue
== -1) {
380 DPRINTFN(2,("usb_add_task: task=%p\n", task
));
381 TAILQ_INSERT_TAIL(&taskq
->tasks
, task
, next
);
384 DPRINTFN(3,("usb_add_task: task=%p on q\n", task
));
386 wakeup(&taskq
->tasks
);
392 usb_do_task(usbd_device_handle dev
, struct usb_task
*task
, int queue
,
395 struct usb_taskq
*taskq
;
399 taskq
= &usb_taskq
[queue
];
400 if (task
->queue
== -1) {
401 DPRINTFN(2,("usb_add_task: task=%p\n", task
));
402 TAILQ_INSERT_TAIL(&taskq
->tasks
, task
, next
);
405 DPRINTFN(3,("usb_add_task: task=%p on q\n", task
));
407 wakeup(&taskq
->tasks
);
409 /* Wait until task is finished */
410 tsleep((&taskq
->tasks
+ 1), 0, "usbdotsk", time_out
);
416 usb_rem_task(usbd_device_handle dev
, struct usb_task
*task
)
419 if (task
->queue
!= -1) {
420 TAILQ_REMOVE(&usb_taskq
[task
->queue
].tasks
, task
, next
);
427 usb_event_thread(void *arg
)
430 struct usb_softc
*sc
= device_get_softc(self
);
432 DPRINTF(("usb_event_thread: start\n"));
435 * In case this controller is a companion controller to an
436 * EHCI controller we need to wait until the EHCI controller
437 * has grabbed the port.
438 * XXX It would be nicer to do this with a tsleep(), but I don't
439 * know how to synchronize the creation of the threads so it
442 usb_delay_ms(sc
->sc_bus
, 500);
446 /* Make sure first discover does something. */
447 sc
->sc_bus
->needs_explore
= 1;
450 while (!sc
->sc_dying
) {
452 if (usb_noexplore
< 2)
456 tsleep(&sc
->sc_bus
->needs_explore
, 0, "usbevt",
457 usb_noexplore
? 0 : hz
* 60);
459 tsleep(&sc
->sc_bus
->needs_explore
, 0, "usbevt", hz
* 60);
461 DPRINTFN(2,("usb_event_thread: woke up\n"));
463 sc
->sc_event_thread
= NULL
;
467 /* In case parent is waiting for us to exit. */
470 DPRINTF(("usb_event_thread: exit\n"));
475 usb_task_thread(void *arg
)
477 struct usb_task
*task
;
478 struct usb_taskq
*taskq
;
483 DPRINTF(("usb_task_thread: start taskq %s\n", taskq
->name
));
485 while (usb_ndevs
> 0) {
486 task
= TAILQ_FIRST(&taskq
->tasks
);
488 tsleep(&taskq
->tasks
, 0, "usbtsk", 0);
489 task
= TAILQ_FIRST(&taskq
->tasks
);
491 DPRINTFN(2,("usb_task_thread: woke up task=%p\n", task
));
493 TAILQ_REMOVE(&taskq
->tasks
, task
, next
);
496 task
->fun(task
->arg
);
498 wakeup((&taskq
->tasks
+ 1));
504 taskq
->taskcreated
= 0;
505 wakeup(&taskq
->taskcreated
);
507 DPRINTF(("usb_event_thread: exit\n"));
511 usbopen(struct dev_open_args
*ap
)
513 cdev_t dev
= ap
->a_head
.a_dev
;
514 int unit
= USBUNIT(dev
);
515 struct usb_softc
*sc
;
517 if (unit
== USB_DEV_MINOR
) {
521 usb_async_proc
= NULL
;
525 sc
= devclass_get_softc(usb_devclass
, unit
);
536 usbread(struct dev_read_args
*ap
)
538 cdev_t dev
= ap
->a_head
.a_dev
;
539 struct uio
*uio
= ap
->a_uio
;
541 int unit
= USBUNIT(dev
);
544 if (unit
!= USB_DEV_MINOR
)
547 if (uio
->uio_resid
!= sizeof(struct usb_event
))
553 n
= usb_get_next_event(&ue
);
556 if (ap
->a_ioflag
& IO_NDELAY
) {
560 error
= tsleep(&usb_events
, PCATCH
, "usbrea", 0);
566 error
= uiomove((void *)&ue
, uio
->uio_resid
, uio
);
572 usbclose(struct dev_close_args
*ap
)
574 cdev_t dev
= ap
->a_head
.a_dev
;
575 int unit
= USBUNIT(dev
);
577 if (unit
== USB_DEV_MINOR
) {
578 usb_async_proc
= NULL
;
586 usbioctl(struct dev_ioctl_args
*ap
)
588 cdev_t devt
= ap
->a_head
.a_dev
;
589 struct usb_softc
*sc
;
590 int unit
= USBUNIT(devt
);
592 if (unit
== USB_DEV_MINOR
) {
595 if (*(int *)ap
->a_data
)
596 usb_async_proc
= curproc
;
598 usb_async_proc
= NULL
;
606 sc
= devclass_get_softc(usb_devclass
, unit
);
612 /* This part should be deleted */
617 struct usb_ctl_request
*ur
= (void *)ap
->a_data
;
618 size_t len
= UGETW(ur
->ucr_request
.wLength
);
622 int addr
= ur
->ucr_addr
;
626 DPRINTF(("usbioctl: USB_REQUEST addr=%d len=%zu\n", addr
, len
));
629 if (addr
< 0 || addr
>= USB_MAX_DEVICES
||
630 sc
->sc_bus
->devices
[addr
] == 0)
633 iov
.iov_base
= (caddr_t
)ur
->ucr_data
;
639 uio
.uio_segflg
= UIO_USERSPACE
;
641 ur
->ucr_request
.bmRequestType
& UT_READ
?
642 UIO_READ
: UIO_WRITE
;
643 uio
.uio_td
= curthread
;
644 ptr
= kmalloc(len
, M_TEMP
, M_WAITOK
);
645 if (uio
.uio_rw
== UIO_WRITE
) {
646 error
= uiomove(ptr
, len
, &uio
);
651 err
= usbd_do_request_flags(sc
->sc_bus
->devices
[addr
],
652 &ur
->ucr_request
, ptr
, ur
->ucr_flags
, &ur
->ucr_actlen
,
653 USBD_DEFAULT_TIMEOUT
);
659 if (uio
.uio_rw
== UIO_READ
) {
660 error
= uiomove(ptr
, len
, &uio
);
673 struct usb_device_info
*di
= (void *)ap
->a_data
;
674 int addr
= di
->udi_addr
;
675 usbd_device_handle dev
;
677 if (addr
< 1 || addr
>= USB_MAX_DEVICES
)
679 dev
= sc
->sc_bus
->devices
[addr
];
682 usbd_fill_deviceinfo(dev
, di
, 1);
686 case USB_DEVICESTATS
:
687 *(struct usb_device_stats
*)ap
->a_data
= sc
->sc_bus
->stats
;
697 usbpoll(struct dev_poll_args
*ap
)
699 cdev_t dev
= ap
->a_head
.a_dev
;
701 int unit
= USBUNIT(dev
);
703 if (unit
== USB_DEV_MINOR
) {
705 mask
= POLLIN
| POLLRDNORM
;
708 if (ap
->a_events
& mask
&& usb_nevents
> 0)
709 revents
|= ap
->a_events
& mask
;
710 if (revents
== 0 && ap
->a_events
& mask
)
711 selrecord(curthread
, &usb_selevent
);
713 ap
->a_events
= revents
;
717 return (0); /* select/poll never wakes up - back compat */
721 /* Explore device tree from the root. */
723 usb_discover(device_t self
)
725 struct usb_softc
*sc
= device_get_softc(self
);
727 DPRINTFN(2,("usb_discover\n"));
729 if (usb_noexplore
> 1)
734 * We need mutual exclusion while traversing the device tree,
735 * but this is guaranteed since this function is only called
736 * from the event thread for the controller.
739 while (sc
->sc_bus
->needs_explore
&& !sc
->sc_dying
) {
740 sc
->sc_bus
->needs_explore
= 0;
743 sc
->sc_bus
->root_hub
->hub
->explore(sc
->sc_bus
->root_hub
);
751 usb_needs_explore(usbd_device_handle dev
)
753 DPRINTFN(2,("usb_needs_explore\n"));
754 dev
->bus
->needs_explore
= 1;
755 wakeup(&dev
->bus
->needs_explore
);
758 /* Called from a critical section */
760 usb_get_next_event(struct usb_event
*ue
)
762 struct usb_event_q
*ueq
;
764 if (usb_nevents
<= 0)
766 ueq
= TAILQ_FIRST(&usb_events
);
769 kprintf("usb: usb_nevents got out of sync! %d\n", usb_nevents
);
776 TAILQ_REMOVE(&usb_events
, ueq
, next
);
777 kfree(ueq
, M_USBDEV
);
783 usbd_add_dev_event(int type
, usbd_device_handle udev
)
787 usbd_fill_deviceinfo(udev
, &ue
.u
.ue_device
, USB_EVENT_IS_ATTACH(type
));
788 usb_add_event(type
, &ue
);
792 usbd_add_drv_event(int type
, usbd_device_handle udev
, device_t dev
)
796 ue
.u
.ue_driver
.ue_cookie
= udev
->cookie
;
797 strncpy(ue
.u
.ue_driver
.ue_devname
, device_get_nameunit(dev
),
798 sizeof ue
.u
.ue_driver
.ue_devname
);
799 usb_add_event(type
, &ue
);
803 usb_add_event(int type
, struct usb_event
*uep
)
805 struct usb_event_q
*ueq
;
806 struct timeval thetime
;
808 ueq
= kmalloc(sizeof *ueq
, M_USBDEV
, M_INTWAIT
);
810 ueq
->ue
.ue_type
= type
;
812 TIMEVAL_TO_TIMESPEC(&thetime
, &ueq
->ue
.ue_time
);
815 if (USB_EVENT_IS_DETACH(type
)) {
816 struct usb_event_q
*ueqi
, *ueqi_next
;
818 for (ueqi
= TAILQ_FIRST(&usb_events
); ueqi
; ueqi
= ueqi_next
) {
819 ueqi_next
= TAILQ_NEXT(ueqi
, next
);
820 if (ueqi
->ue
.u
.ue_driver
.ue_cookie
.cookie
==
821 uep
->u
.ue_device
.udi_cookie
.cookie
) {
822 TAILQ_REMOVE(&usb_events
, ueqi
, next
);
823 kfree(ueqi
, M_USBDEV
);
825 ueqi_next
= TAILQ_FIRST(&usb_events
);
829 if (usb_nevents
>= USB_MAX_EVENTS
) {
830 /* Too many queued events, drop an old one. */
831 DPRINTF(("usb: event dropped\n"));
832 usb_get_next_event(NULL
);
834 TAILQ_INSERT_TAIL(&usb_events
, ueq
, next
);
837 selwakeup(&usb_selevent
);
838 if (usb_async_proc
!= NULL
) {
839 ksignal(usb_async_proc
, SIGIO
);
845 usb_schedsoftintr(usbd_bus_handle bus
)
847 DPRINTFN(10,("usb_schedsoftintr: polling=%d\n", bus
->use_polling
));
848 #ifdef USB_USE_SOFTINTR
849 if (bus
->use_polling
) {
850 bus
->methods
->soft_intr(bus
);
852 if (!callout_pending(&bus
->softi
))
853 callout_reset(&bus
->softi
, 0, bus
->methods
->soft_intr
,
857 bus
->methods
->soft_intr(bus
);
858 #endif /* USB_USE_SOFTINTR */
862 usb_detach(device_t self
)
864 struct usb_softc
*sc
= device_get_softc(self
);
867 DPRINTF(("usb_detach: start\n"));
871 /* Make all devices disconnect. */
872 if (sc
->sc_port
.device
!= NULL
)
873 usb_disconnect_port(&sc
->sc_port
, self
);
875 /* Kill off event thread. */
876 if (sc
->sc_event_thread
!= NULL
) {
877 wakeup(&sc
->sc_bus
->needs_explore
);
878 if (tsleep(sc
, 0, "usbdet", hz
* 60))
880 "event thread didn't die\n");
881 DPRINTF(("usb_detach: event thread dead\n"));
884 release_dev(sc
->sc_usbdev
);
886 if (--usb_ndevs
== 0) {
889 release_dev(usb_dev
);
890 dev_ops_remove_minor(&usb_ops
, USB_DEV_MINOR
);
893 for (i
= 0; i
< USB_NUM_TASKQS
; i
++) {
894 struct usb_taskq
*taskq
= &usb_taskq
[i
];
895 wakeup(&taskq
->tasks
);
896 if (tsleep(&taskq
->taskcreated
, 0, "usbtdt",
898 kprintf("usb task thread %s didn't die\n",
906 #ifdef USB_USE_SOFTINTR
907 callout_stop(&sc
->sc_bus
->softi
);
910 ue
.u
.ue_ctrlr
.ue_bus
= device_get_unit(self
);
911 usb_add_event(USB_EVENT_CTRLR_DETACH
, &ue
);
917 usb_child_detached(device_t self
, device_t child
)
919 struct usb_softc
*sc
= device_get_softc(self
);
921 /* XXX, should check it is the right device. */
922 sc
->sc_port
.device
= NULL
;
925 /* Explore USB busses at the end of device configuration */
927 usb_cold_explore(void *arg
)
929 struct usb_softc
*sc
;
931 TUNABLE_INT_FETCH("hw.usb.hack_defer_exploration",
932 &hack_defer_exploration
);
934 if (!hack_defer_exploration
)
937 KASSERT(cold
|| TAILQ_EMPTY(&usb_coldexplist
),
938 ("usb_cold_explore: busses to explore when !cold"));
939 while (!TAILQ_EMPTY(&usb_coldexplist
)) {
940 sc
= TAILQ_FIRST(&usb_coldexplist
);
941 TAILQ_REMOVE(&usb_coldexplist
, sc
, sc_coldexplist
);
943 sc
->sc_bus
->use_polling
++;
944 sc
->sc_port
.device
->hub
->explore(sc
->sc_bus
->root_hub
);
945 sc
->sc_bus
->use_polling
--;
950 usb_getbushandle(struct usb_softc
*sc
)
956 SYSINIT(usb_cold_explore
, SI_SUB_CONFIGURE
, SI_ORDER_MIDDLE
,
957 usb_cold_explore
, NULL
);
959 DRIVER_MODULE(usb
, ohci
, usb_driver
, usb_devclass
, 0, 0);
960 DRIVER_MODULE(usb
, uhci
, usb_driver
, usb_devclass
, 0, 0);
961 DRIVER_MODULE(usb
, ehci
, usb_driver
, usb_devclass
, 0, 0);