int
fw_open(dev_t dev, int flags, int fmt, struct lwp *td)
{
struct firewire_softc *sc;
struct fw_drv1 *d;
int err = 0;
sc = device_lookup_private(&ieee1394if_cd, DEV2UNIT(dev));
if (sc == NULL)
return ENXIO;
if (DEV_FWMEM(dev))
return fwmem_open(dev, flags, fmt, td);
mutex_enter(&sc->fc->fc_mtx);
if (sc->si_drv1 != NULL) {
mutex_exit(&sc->fc->fc_mtx);
return EBUSY;
}
/* set dummy value for allocation */
sc->si_drv1 = (void *)-1;
mutex_exit(&sc->fc->fc_mtx);
sc->si_drv1 = malloc(sizeof(struct fw_drv1), M_FW, M_WAITOK | M_ZERO);
if (sc->si_drv1 == NULL)
return ENOMEM;
d = (struct fw_drv1 *)sc->si_drv1;
d->fc = sc->fc;
STAILQ_INIT(&d->binds);
STAILQ_INIT(&d->rq);
return err;
}
static int
fw_open (struct dev_open_args *ap)
{
cdev_t dev = ap->a_head.a_dev;
int err = 0;
if (DEV_FWMEM(dev))
return fwmem_open(ap);
if (dev->si_drv1 != NULL)
return (EBUSY);
#if defined(__FreeBSD__) && __FreeBSD_version >= 500000
if ((dev->si_flags & SI_NAMED) == 0) {
int unit = DEV2UNIT(dev);
int sub = DEV2SUB(dev);
make_dev(&firewire_ops, minor(dev),
UID_ROOT, GID_OPERATOR, 0660,
"fw%d.%d", unit, sub);
}
#endif
dev->si_drv1 = kmalloc(sizeof(struct fw_drv1), M_FW, M_WAITOK | M_ZERO);
return err;
}
static int
fw_open (struct cdev *dev, int flags, int fmt, fw_proc *td)
{
int err = 0;
int unit = DEV2UNIT(dev);
struct fw_drv1 *d;
struct firewire_softc *sc;
if (DEV_FWMEM(dev))
return fwmem_open(dev, flags, fmt, td);
sc = devclass_get_softc(firewire_devclass, unit);
if (sc == NULL)
return (ENXIO);
FW_GLOCK(sc->fc);
if (dev->si_drv1 != NULL) {
FW_GUNLOCK(sc->fc);
return (EBUSY);
}
/* set dummy value for allocation */
dev->si_drv1 = (void *)-1;
FW_GUNLOCK(sc->fc);
dev->si_drv1 = malloc(sizeof(struct fw_drv1), M_FW, M_WAITOK | M_ZERO);
if (dev->si_drv1 == NULL)
return (ENOMEM);
#if defined(__FreeBSD__) && __FreeBSD_version >= 500000
if ((dev->si_flags & SI_NAMED) == 0) {
int unit = DEV2UNIT(dev);
int sub = DEV2SUB(dev);
make_dev(&firewire_cdevsw, dev2unit(dev),
UID_ROOT, GID_OPERATOR, 0660,
"fw%d.%d", unit, sub);
}
#endif
d = (struct fw_drv1 *)dev->si_drv1;
d->fc = sc->fc;
STAILQ_INIT(&d->binds);
STAILQ_INIT(&d->rq);
return err;
}