/*------------------------------------------------------------------------*
* usb_proc_free
*
* NOTE: If the structure pointed to by "up" is all zero, this
* function does nothing.
*
* NOTE: Messages that are pending on the process queue will not be
* removed nor called.
*------------------------------------------------------------------------*/
void
usb_proc_free(struct usb_process *up)
{
/* check if not initialised */
if (up->up_mtx == NULL)
return;
usb_proc_drain(up);
cv_destroy(&up->up_cv);
cv_destroy(&up->up_drain);
/* make sure that we do not enter here again */
up->up_mtx = NULL;
}
void
uether_ifdetach(struct usb_ether *ue)
{
struct ifnet *ifp;
/* wait for any post attach or other command to complete */
usb_proc_drain(&ue->ue_tq);
/* read "ifnet" pointer after taskqueue drain */
ifp = ue->ue_ifp;
if (ifp != NULL) {
/* we are not running any more */
UE_LOCK(ue);
ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
UE_UNLOCK(ue);
/* drain any callouts */
usb_callout_drain(&ue->ue_watchdog);
/* detach miibus */
if (ue->ue_miibus != NULL) {
mtx_lock(&Giant); /* device_xxx() depends on this */
device_delete_child(ue->ue_dev, ue->ue_miibus);
mtx_unlock(&Giant);
}
/* detach ethernet */
ether_ifdetach(ifp);
/* free interface instance */
if_free(ifp);
/* free sysctl */
sysctl_ctx_free(&ue->ue_sysctl_ctx);
/* free unit */
free_unr(ueunit, ue->ue_unit);
}
/* free taskqueue, if any */
usb_proc_free(&ue->ue_tq);
}
/*
* NOTE: the following function will do nothing if
* the structure pointed to by "ssc" and "sc" is zero.
*/
void
ucom_detach(struct ucom_super_softc *ssc, struct ucom_softc *sc,
uint32_t sub_units)
{
uint32_t n;
usb_proc_drain(&ssc->sc_tq);
for (n = 0; n != sub_units; n++, sc++) {
if (sc->sc_flag & UCOM_FLAG_ATTACHED) {
ucom_detach_tty(sc);
ucom_units_free(sc->sc_unit, 1);
/* avoid duplicate detach: */
sc->sc_flag &= ~UCOM_FLAG_ATTACHED;
}
}
usb_proc_free(&ssc->sc_tq);
}
/*
* The following function will do nothing if the structure pointed to
* by "ssc" and "sc" is zero or has already been detached.
*/
void
ucom_detach(struct ucom_super_softc *ssc, struct ucom_softc *sc)
{
int subunit;
if (!(ssc->sc_flag & UCOM_FLAG_ATTACHED))
return; /* not initialized */
if (ssc->sc_sysctl_ttyname != NULL) {
sysctl_remove_oid(ssc->sc_sysctl_ttyname, 1, 0);
ssc->sc_sysctl_ttyname = NULL;
}
if (ssc->sc_sysctl_ttyports != NULL) {
sysctl_remove_oid(ssc->sc_sysctl_ttyports, 1, 0);
ssc->sc_sysctl_ttyports = NULL;
}
usb_proc_drain(&ssc->sc_tq);
for (subunit = 0; subunit < ssc->sc_subunits; subunit++) {
if (sc[subunit].sc_flag & UCOM_FLAG_ATTACHED) {
ucom_detach_tty(ssc, &sc[subunit]);
/* avoid duplicate detach */
sc[subunit].sc_flag &= ~UCOM_FLAG_ATTACHED;
}
}
usb_proc_free(&ssc->sc_tq);
ucom_unref(ssc);
if (ssc->sc_flag & UCOM_FLAG_WAIT_REFS)
ucom_drain(ssc);
/* make sure we don't detach twice */
ssc->sc_flag &= ~UCOM_FLAG_ATTACHED;
}
void
uether_ifdetach(struct usb_ether *ue)
{
struct ifnet *ifp;
/* wait for any post attach or other command to complete */
usb_proc_drain(&ue->ue_tq);
/* read "ifnet" pointer after taskqueue drain */
ifp = uether_getifp(ue);
if (ifp != NULL) {
/* we are not running any more */
UE_LOCK(ue);
ifp->if_flags &= ~IFF_RUNNING;
UE_UNLOCK(ue);
/* drain any callouts */
usb_callout_drain(&ue->ue_watchdog);
/* detach miibus */
if (ue->ue_miibus != NULL) {
device_delete_child(ue->ue_dev, ue->ue_miibus);
}
/* detach ethernet */
ether_ifdetach(ifp);
/* free sysctl */
sysctl_ctx_free(&ue->ue_sysctl_ctx);
/* free unit */
devfs_clone_bitmap_put(&DEVFS_CLONE_BITMAP(ue), ue->ue_unit);
}
/* free taskqueue, if any */
usb_proc_free(&ue->ue_tq);
}
