static int
ucom_ioctl(struct tty *tp, u_long cmd, caddr_t data, struct thread *td)
{
struct ucom_softc *sc = tty_softc(tp);
int error;
UCOM_MTX_ASSERT(sc, MA_OWNED);
if (!(sc->sc_flag & UCOM_FLAG_HL_READY)) {
return (EIO);
}
DPRINTF("cmd = 0x%08lx\n", cmd);
switch (cmd) {
#if 0
case TIOCSRING:
ucom_ring(sc, 1);
error = 0;
break;
case TIOCCRING:
ucom_ring(sc, 0);
error = 0;
break;
#endif
case TIOCSBRK:
ucom_break(sc, 1);
error = 0;
break;
case TIOCCBRK:
ucom_break(sc, 0);
error = 0;
break;
default:
if (sc->sc_callback->ucom_ioctl) {
error = (sc->sc_callback->ucom_ioctl)
(sc, cmd, data, 0, td);
} else {
error = ENOIOCTL;
}
if (error == ENOIOCTL)
error = pps_ioctl(cmd, data, &sc->sc_pps);
break;
}
return (error);
}
static int
ucom_open(struct tty *tp)
{
struct ucom_softc *sc = tty_softc(tp);
int error;
UCOM_MTX_ASSERT(sc, MA_OWNED);
if (sc->sc_flag & UCOM_FLAG_GONE) {
return (ENXIO);
}
if (sc->sc_flag & UCOM_FLAG_HL_READY) {
/* already opened */
return (0);
}
DPRINTF("tp = %p\n", tp);
if (sc->sc_callback->ucom_pre_open) {
/*
* give the lower layer a chance to disallow TTY open, for
* example if the device is not present:
*/
error = (sc->sc_callback->ucom_pre_open) (sc);
if (error) {
return (error);
}
}
sc->sc_flag |= UCOM_FLAG_HL_READY;
/* Disable transfers */
sc->sc_flag &= ~UCOM_FLAG_GP_DATA;
sc->sc_lsr = 0;
sc->sc_msr = 0;
sc->sc_mcr = 0;
/* reset programmed line state */
sc->sc_pls_curr = 0;
sc->sc_pls_set = 0;
sc->sc_pls_clr = 0;
/* reset jitter buffer */
sc->sc_jitterbuf_in = 0;
sc->sc_jitterbuf_out = 0;
ucom_queue_command(sc, ucom_cfg_open, NULL,
&sc->sc_open_task[0].hdr,
&sc->sc_open_task[1].hdr);
/* Queue transfer enable command last */
ucom_queue_command(sc, ucom_cfg_start_transfers, NULL,
&sc->sc_start_task[0].hdr,
&sc->sc_start_task[1].hdr);
ucom_modem(tp, SER_DTR | SER_RTS, 0);
ucom_ring(sc, 0);
ucom_break(sc, 0);
ucom_status_change(sc);
return (0);
}
static int
ucom_dev_ioctl(struct dev_ioctl_args *ap)
{
cdev_t dev = ap->a_head.a_dev;
struct ucom_softc *sc = (struct ucom_softc *)dev->si_drv1;
u_long cmd = ap->a_cmd;
caddr_t data = ap->a_data;
struct tty *tp = sc->sc_tty;
int error;
UCOM_MTX_LOCK(sc);
lwkt_gettoken(&tty_token);
if (!(sc->sc_flag & UCOM_FLAG_HL_READY)) {
lwkt_reltoken(&tty_token);
return (EIO);
}
DPRINTF("cmd = 0x%08lx\n", cmd);
error = (*linesw[tp->t_line].l_ioctl)(tp, ap->a_cmd, ap->a_data,
ap->a_fflag, ap->a_cred);
if (error != ENOIOCTL) {
DPRINTF("ucomioctl: l_ioctl: error = %d\n", error);
lwkt_reltoken(&tty_token);
UCOM_MTX_UNLOCK(sc);
return (error);
}
crit_enter();
error = ttioctl(tp, ap->a_cmd, ap->a_data, ap->a_fflag);
/*disc_optim(tp, &tp->t_termios, sc); */
if (error != ENOIOCTL) {
crit_exit();
DPRINTF("ucomioctl: ttioctl: error = %d\n", error);
lwkt_reltoken(&tty_token);
UCOM_MTX_UNLOCK(sc);
return (error);
}
switch (cmd) {
#if 0 /* XXXDF */
case TIOCSRING:
ucom_ring(sc, 1);
error = 0;
break;
case TIOCCRING:
ucom_ring(sc, 0);
error = 0;
break;
#endif
case TIOCSBRK:
ucom_break(sc, 1);
error = 0;
break;
case TIOCCBRK:
ucom_break(sc, 0);
error = 0;
break;
default:
if (sc->sc_callback->ucom_ioctl) {
error = (sc->sc_callback->ucom_ioctl)
(sc, cmd, data, 0, curthread);
if (error>=0) {
crit_exit();
lwkt_reltoken(&tty_token);
UCOM_MTX_UNLOCK(sc);
return(error);
}
} else {
error = ENOIOCTL;
}
break;
}
crit_exit();
lwkt_reltoken(&tty_token);
UCOM_MTX_UNLOCK(sc);
return (error);
}