470 lines
10 KiB
C
470 lines
10 KiB
C
/* $NetBSD: usb.c,v 1.14 1999/07/06 21:44:12 thorpej Exp $ */
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/*
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* Copyright (c) 1998 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Lennart Augustsson (augustss@carlstedt.se) at
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* Carlstedt Research & Technology.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* USB specifications and other documentation can be found at
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* http://www.usb.org/developers/data/ and
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* http://www.usb.org/developers/index.html .
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#if defined(__NetBSD__)
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#include <sys/device.h>
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#include <sys/kthread.h>
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#elif defined(__FreeBSD__)
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#include <sys/module.h>
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#include <sys/bus.h>
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#include <sys/ioccom.h>
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#include <sys/uio.h>
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#include <sys/conf.h>
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#endif
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#include <sys/poll.h>
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#include <sys/proc.h>
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#include <sys/select.h>
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#include <dev/usb/usb.h>
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#include <dev/usb/usbdi.h>
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#include <dev/usb/usbdi_util.h>
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#if defined(__FreeBSD__)
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MALLOC_DEFINE(M_USB, "USB", "USB");
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MALLOC_DEFINE(M_USBDEV, "USBdev", "USB device");
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MALLOC_DEFINE(M_USBHC, "USBHC", "USB host controller");
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#include "usb_if.h"
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#endif /* defined(__FreeBSD__) */
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#include <dev/usb/usbdivar.h>
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#include <dev/usb/usb_quirks.h>
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#ifdef USB_DEBUG
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#define DPRINTF(x) if (usbdebug) printf x
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#define DPRINTFN(n,x) if (usbdebug>(n)) printf x
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int usbdebug = 0;
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int uhcidebug;
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int ohcidebug;
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#else
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#define DPRINTF(x)
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#define DPRINTFN(n,x)
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#endif
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#define USBUNIT(dev) (minor(dev))
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struct usb_softc {
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bdevice sc_dev; /* base device */
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usbd_bus_handle sc_bus; /* USB controller */
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struct usbd_port sc_port; /* dummy port for root hub */
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char sc_running;
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char sc_exploring;
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struct selinfo sc_consel; /* waiting for connect change */
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int shutdown;
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struct proc *event_thread;
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};
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#if defined(__NetBSD__)
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int usbopen __P((dev_t, int, int, struct proc *));
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int usbclose __P((dev_t, int, int, struct proc *));
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int usbioctl __P((dev_t, u_long, caddr_t, int, struct proc *));
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int usbpoll __P((dev_t, int, struct proc *));
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#elif defined(__FreeBSD__)
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d_open_t usbopen;
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d_close_t usbclose;
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d_ioctl_t usbioctl;
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int usbpoll __P((dev_t, int, struct proc *));
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struct cdevsw usb_cdevsw = {
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usbopen, usbclose, noread, nowrite,
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usbioctl, nullstop, nullreset, nodevtotty,
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usbpoll, nommap, nostrat,
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"usb", NULL, -1
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};
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#endif
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usbd_status usb_discover __P((struct usb_softc *));
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void usb_create_event_thread __P((void *));
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void usb_event_thread __P((void *));
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USB_DECLARE_DRIVER_INIT(usb, DEVMETHOD(bus_print_child, usbd_print_child));
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USB_MATCH(usb)
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{
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DPRINTF(("usbd_match\n"));
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return (UMATCH_GENERIC);
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}
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USB_ATTACH(usb)
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{
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#if defined(__NetBSD__)
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struct usb_softc *sc = (struct usb_softc *)self;
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#elif defined(__FreeBSD__)
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struct usb_softc *sc = device_get_softc(self);
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void *aux = device_get_ivars(self);
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#endif
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usbd_device_handle dev;
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usbd_status r;
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#if defined(__NetBSD__)
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printf("\n");
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#elif defined(__FreeBSD__)
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sc->sc_dev = self;
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#endif
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DPRINTF(("usbd_attach\n"));
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usbd_init();
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sc->sc_bus = aux;
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sc->sc_bus->usbctl = sc;
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sc->sc_running = 1;
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sc->sc_bus->use_polling = 1;
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sc->sc_port.power = USB_MAX_POWER;
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r = usbd_new_device(&sc->sc_dev, sc->sc_bus, 0,0,0, &sc->sc_port);
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if (r == USBD_NORMAL_COMPLETION) {
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dev = sc->sc_port.device;
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if (!dev->hub) {
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sc->sc_running = 0;
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printf("%s: root device is not a hub\n",
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USBDEVNAME(sc->sc_dev));
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USB_ATTACH_ERROR_RETURN;
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}
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sc->sc_bus->root_hub = dev;
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dev->hub->explore(sc->sc_bus->root_hub);
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} else {
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printf("%s: root hub problem, error=%d\n",
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USBDEVNAME(sc->sc_dev), r);
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sc->sc_running = 0;
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}
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sc->sc_bus->use_polling = 0;
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kthread_create(usb_create_event_thread, sc);
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USB_ATTACH_SUCCESS_RETURN;
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}
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void
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usb_create_event_thread(arg)
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void *arg;
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{
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struct usb_softc *sc = arg;
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if (kthread_create1(usb_event_thread, sc, &sc->event_thread,
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"%s", sc->sc_dev.dv_xname)) {
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printf("%s: unable to create event thread for\n",
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sc->sc_dev.dv_xname);
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panic("usb_create_event_thread");
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}
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}
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void
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usb_event_thread(arg)
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void *arg;
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{
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struct usb_softc *sc = arg;
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while (!sc->shutdown) {
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(void)tsleep(&sc->sc_bus->needs_explore,
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PWAIT, "usbevt", hz*30);
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DPRINTFN(2,("usb_event_thread: woke up\n"));
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usb_discover(sc);
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}
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sc->event_thread = 0;
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/* In case parent is waiting for us to exit. */
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wakeup(sc);
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kthread_exit(0);
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}
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#if defined(__NetBSD__)
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int
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usbctlprint(aux, pnp)
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void *aux;
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const char *pnp;
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{
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/* only "usb"es can attach to host controllers */
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if (pnp)
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printf("usb at %s", pnp);
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return (UNCONF);
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}
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#endif
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int
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usbopen(dev, flag, mode, p)
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dev_t dev;
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int flag, mode;
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struct proc *p;
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{
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USB_GET_SC_OPEN(usb, USBUNIT(dev), sc);
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if (sc == 0 || !sc->sc_running)
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return (ENXIO);
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return (0);
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}
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int
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usbclose(dev, flag, mode, p)
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dev_t dev;
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int flag, mode;
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struct proc *p;
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{
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return (0);
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}
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int
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usbioctl(dev, cmd, data, flag, p)
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dev_t dev;
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u_long cmd;
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caddr_t data;
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int flag;
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struct proc *p;
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{
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USB_GET_SC(usb, USBUNIT(dev), sc);
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if (sc == 0 || !sc->sc_running)
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return (ENXIO);
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switch (cmd) {
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#ifdef USB_DEBUG
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case USB_SETDEBUG:
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usbdebug = uhcidebug = ohcidebug = *(int *)data;
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break;
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#endif
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#if 0
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case USB_DISCOVER:
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usb_discover(sc);
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break;
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#endif
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case USB_REQUEST:
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{
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struct usb_ctl_request *ur = (void *)data;
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int len = UGETW(ur->request.wLength);
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struct iovec iov;
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struct uio uio;
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void *ptr = 0;
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int addr = ur->addr;
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usbd_status r;
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int error = 0;
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DPRINTF(("usbioctl: USB_REQUEST addr=%d len=%d\n", addr, len));
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if (len < 0 || len > 32768)
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return (EINVAL);
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if (addr < 0 || addr >= USB_MAX_DEVICES ||
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sc->sc_bus->devices[addr] == 0)
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return (EINVAL);
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if (len != 0) {
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iov.iov_base = (caddr_t)ur->data;
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iov.iov_len = len;
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uio.uio_iov = &iov;
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uio.uio_iovcnt = 1;
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uio.uio_resid = len;
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uio.uio_offset = 0;
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uio.uio_segflg = UIO_USERSPACE;
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uio.uio_rw =
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ur->request.bmRequestType & UT_READ ?
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UIO_READ : UIO_WRITE;
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uio.uio_procp = p;
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ptr = malloc(len, M_TEMP, M_WAITOK);
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if (uio.uio_rw == UIO_WRITE) {
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error = uiomove(ptr, len, &uio);
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if (error)
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goto ret;
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}
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}
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r = usbd_do_request_flags(sc->sc_bus->devices[addr],
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&ur->request, ptr,
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ur->flags, &ur->actlen);
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if (r) {
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error = EIO;
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goto ret;
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}
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if (len != 0) {
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if (uio.uio_rw == UIO_READ) {
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error = uiomove(ptr, len, &uio);
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if (error)
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goto ret;
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}
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}
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ret:
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if (ptr)
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free(ptr, M_TEMP);
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return (error);
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}
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case USB_DEVICEINFO:
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{
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struct usb_device_info *di = (void *)data;
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int addr = di->addr;
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usbd_device_handle dev;
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if (addr < 1 || addr >= USB_MAX_DEVICES)
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return (EINVAL);
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dev = sc->sc_bus->devices[addr];
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if (dev == 0)
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return (ENXIO);
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usbd_fill_deviceinfo(dev, di);
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break;
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}
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case USB_DEVICESTATS:
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*(struct usb_device_stats *)data = sc->sc_bus->stats;
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break;
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default:
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return (ENXIO);
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}
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return (0);
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}
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int
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usbpoll(dev, events, p)
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dev_t dev;
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int events;
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struct proc *p;
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{
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int revents, s;
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USB_GET_SC(usb, USBUNIT(dev), sc);
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DPRINTFN(2, ("usbpoll: sc=%p events=0x%x\n", sc, events));
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s = splusb();
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revents = 0;
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if (events & (POLLOUT | POLLWRNORM))
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if (sc->sc_bus->needs_explore)
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revents |= events & (POLLOUT | POLLWRNORM);
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DPRINTFN(2, ("usbpoll: revents=0x%x\n", revents));
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if (revents == 0) {
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if (events & (POLLOUT | POLLWRNORM)) {
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DPRINTFN(2, ("usbpoll: selrecord\n"));
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selrecord(p, &sc->sc_consel);
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}
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}
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splx(s);
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return (revents);
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}
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#if 0
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int
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usb_bus_count()
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{
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int i, n;
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for (i = n = 0; i < usb_cd.cd_ndevs; i++)
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if (usb_cd.cd_devs[i])
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n++;
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return (n);
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}
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#endif
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#if 0
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usbd_status
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usb_get_bus_handle(n, h)
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int n;
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usbd_bus_handle *h;
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{
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int i;
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for (i = 0; i < usb_cd.cd_ndevs; i++)
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if (usb_cd.cd_devs[i] && n-- == 0) {
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*h = usb_cd.cd_devs[i];
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return (USBD_NORMAL_COMPLETION);
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}
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return (USBD_INVAL);
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}
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#endif
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usbd_status
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usb_discover(sc)
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struct usb_softc *sc;
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{
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int s;
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/* Explore device tree from the root */
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/* We need mutual exclusion while traversing the device tree. */
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do {
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s = splusb();
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while (sc->sc_exploring)
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tsleep(&sc->sc_exploring, PRIBIO, "usbdis", 0);
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sc->sc_exploring = 1;
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sc->sc_bus->needs_explore = 0;
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splx(s);
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sc->sc_bus->root_hub->hub->explore(sc->sc_bus->root_hub);
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s = splusb();
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sc->sc_exploring = 0;
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wakeup(&sc->sc_exploring);
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splx(s);
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} while (sc->sc_bus->needs_explore);
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return (USBD_NORMAL_COMPLETION);
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}
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void
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usb_needs_explore(bus)
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usbd_bus_handle bus;
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{
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bus->needs_explore = 1;
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selwakeup(&bus->usbctl->sc_consel);
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wakeup(&bus->needs_explore);
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}
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int
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usb_activate(self, act)
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struct device *self;
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enum devact act;
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{
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panic("usb_activate\n");
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return (0);
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}
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int
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usb_detach(self, flags)
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struct device *self;
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int flags;
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{
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panic("usb_detach\n");
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return (0);
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}
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#if defined(__FreeBSD__)
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DRIVER_MODULE(usb, root, usb_driver, usb_devclass, 0, 0);
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#endif
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