int
ucomclose(dev_t dev, int flag, int mode, struct proc *p)
{
struct ucom_softc *sc = ucom_cd.cd_devs[UCOMUNIT(dev)];
struct tty *tp = sc->sc_tty;
int s;
if (!ISSET(tp->t_state, TS_ISOPEN))
return (0);
DPRINTF(("ucomclose: unit=%d\n", UCOMUNIT(dev)));
ucom_lock(sc);
(*LINESW(tp, l_close))(tp, flag);
s = spltty();
CLR(tp->t_state, TS_BUSY | TS_FLUSH);
sc->sc_cua = 0;
ttyclose(tp);
ucom_cleanup(sc);
splx(s);
if (sc->sc_methods->ucom_close != NULL)
sc->sc_methods->ucom_close(sc->sc_parent, sc->sc_portno);
ucom_unlock(sc);
return (0);
}
void
ucomreadcb(struct usbd_xfer *xfer, void *p, usbd_status status)
{
struct ucom_softc *sc = (struct ucom_softc *)p;
struct tty *tp = sc->sc_tty;
int (*rint)(int c, struct tty *tp) = LINESW(tp, l_rint);
usbd_status err;
u_int32_t cc;
u_char *cp;
int s;
DPRINTFN(5,("ucomreadcb: status=%d\n", status));
if (status == USBD_CANCELLED || status == USBD_IOERROR ||
usbd_is_dying(sc->sc_uparent)) {
DPRINTF(("ucomreadcb: dying\n"));
/* Send something to wake upper layer */
s = spltty();
(*rint)('\n', tp);
ttwakeup(tp);
splx(s);
return;
}
if (status) {
if (sc->sc_bulkin_pipe != NULL) {
usbd_clear_endpoint_stall_async(sc->sc_bulkin_pipe);
/* XXX we should restart after some delay. */
return;
}
}
usbd_get_xfer_status(xfer, NULL, (void *)&cp, &cc, NULL);
DPRINTFN(5,("ucomreadcb: got %d chars, tp=%p\n", cc, tp));
if (sc->sc_methods->ucom_read != NULL)
sc->sc_methods->ucom_read(sc->sc_parent, sc->sc_portno,
&cp, &cc);
s = spltty();
/* Give characters to tty layer. */
while (cc-- > 0) {
DPRINTFN(7,("ucomreadcb: char=0x%02x\n", *cp));
if ((*rint)(*cp++, tp) == -1) {
/* XXX what should we do? */
printf("%s: lost %d chars\n", sc->sc_dev.dv_xname,
cc);
break;
}
}
splx(s);
err = ucomstartread(sc);
if (err) {
printf("%s: read start failed\n", sc->sc_dev.dv_xname);
/* XXX what should we dow now? */
}
}
int
ucomwrite(dev_t dev, struct uio *uio, int flag)
{
struct ucom_softc *sc = ucom_cd.cd_devs[UCOMUNIT(dev)];
struct tty *tp = sc->sc_tty;
int error;
if (sc->sc_dying)
return (EIO);
sc->sc_refcnt++;
error = (*LINESW(tp, l_write))(tp, uio, flag);
if (--sc->sc_refcnt < 0)
usb_detach_wakeup(&sc->sc_dev);
return (error);
}
int
ucomread(dev_t dev, struct uio *uio, int flag)
{
struct ucom_softc *sc = ucom_cd.cd_devs[UCOMUNIT(dev)];
struct tty *tp;
int error;
if (sc == NULL || usbd_is_dying(sc->sc_uparent))
return (EIO);
sc->sc_refcnt++;
tp = sc->sc_tty;
error = (*LINESW(tp, l_read))(tp, uio, flag);
if (--sc->sc_refcnt < 0)
usb_detach_wakeup(&sc->sc_dev);
return (error);
}
void
ucomwritecb(struct usbd_xfer *xfer, void *p, usbd_status status)
{
struct ucom_softc *sc = (struct ucom_softc *)p;
struct tty *tp = sc->sc_tty;
u_int32_t cc;
int s;
DPRINTFN(5,("ucomwritecb: %p %p status=%d\n", xfer, p, status));
if (status == USBD_CANCELLED || usbd_is_dying(sc->sc_uparent))
goto error;
if (sc->sc_bulkin_pipe != NULL) {
if (status) {
usbd_clear_endpoint_stall_async(sc->sc_bulkin_pipe);
/* XXX we should restart after some delay. */
goto error;
}
usbd_get_xfer_status(xfer, NULL, NULL, &cc, NULL);
} else {
usbd_get_xfer_status(xfer, NULL, NULL, &cc, NULL);
// XXX above gives me wrong cc, no?
}
DPRINTFN(5,("ucomwritecb: cc=%d\n", cc));
/* convert from USB bytes to tty bytes */
cc -= sc->sc_opkthdrlen;
s = spltty();
CLR(tp->t_state, TS_BUSY);
if (ISSET(tp->t_state, TS_FLUSH))
CLR(tp->t_state, TS_FLUSH);
else
ndflush(&tp->t_outq, cc);
(*LINESW(tp, l_start))(tp);
splx(s);
return;
error:
s = spltty();
CLR(tp->t_state, TS_BUSY);
splx(s);
}
void
ucom_status_change(struct ucom_softc *sc)
{
struct tty *tp = sc->sc_tty;
u_char old_msr;
if (sc->sc_methods->ucom_get_status != NULL) {
old_msr = sc->sc_msr;
sc->sc_methods->ucom_get_status(sc->sc_parent, sc->sc_portno,
&sc->sc_lsr, &sc->sc_msr);
ttytstamp(tp, old_msr & UMSR_CTS, sc->sc_msr & UMSR_CTS,
old_msr & UMSR_DCD, sc->sc_msr & UMSR_DCD);
if (ISSET((sc->sc_msr ^ old_msr), UMSR_DCD))
(*LINESW(tp, l_modem))(tp,
ISSET(sc->sc_msr, UMSR_DCD));
} else {
sc->sc_lsr = 0;
sc->sc_msr = 0;
}
}
int
ucom_do_ioctl(struct ucom_softc *sc, u_long cmd, caddr_t data,
int flag, struct proc *p)
{
struct tty *tp = sc->sc_tty;
int error;
int s;
if (sc->sc_dying)
return (EIO);
DPRINTF(("ucomioctl: cmd=0x%08lx\n", cmd));
error = (*LINESW(tp, l_ioctl))(tp, cmd, data, flag, p);
if (error >= 0)
return (error);
error = ttioctl(tp, cmd, data, flag, p);
if (error >= 0)
return (error);
if (sc->sc_methods->ucom_ioctl != NULL) {
error = sc->sc_methods->ucom_ioctl(sc->sc_parent,
sc->sc_portno, cmd, data, flag, p);
if (error >= 0)
return (error);
}
error = 0;
DPRINTF(("ucomioctl: our cmd=0x%08lx\n", cmd));
s = spltty();
switch (cmd) {
case TIOCSBRK:
ucom_break(sc, 1);
break;
case TIOCCBRK:
ucom_break(sc, 0);
break;
case TIOCSDTR:
ucom_dtr(sc, 1);
break;
case TIOCCDTR:
ucom_dtr(sc, 0);
break;
case TIOCGFLAGS:
*(int *)data = sc->sc_swflags;
break;
case TIOCSFLAGS:
error = suser(p, 0);
if (error)
break;
sc->sc_swflags = *(int *)data;
break;
case TIOCMSET:
case TIOCMBIS:
case TIOCMBIC:
tiocm_to_ucom(sc, cmd, *(int *)data);
break;
case TIOCMGET:
*(int *)data = ucom_to_tiocm(sc);
break;
default:
error = ENOTTY;
break;
}
splx(s);
return (error);
}
int
ucomopen(dev_t dev, int flag, int mode, struct proc *p)
{
int unit = UCOMUNIT(dev);
usbd_status err;
struct ucom_softc *sc;
struct tty *tp;
struct termios t;
int s;
int error;
if (unit >= ucom_cd.cd_ndevs)
return (ENXIO);
sc = ucom_cd.cd_devs[unit];
if (sc == NULL)
return (ENXIO);
if (sc->sc_dying)
return (EIO);
if (ISSET(sc->sc_dev.dv_flags, DVF_ACTIVE) == 0)
return (ENXIO);
/* open the pipes if this is the first open */
ucom_lock(sc);
if (sc->sc_open++ == 0) {
s = splusb();
DPRINTF(("ucomopen: open pipes in=%d out=%d\n",
sc->sc_bulkin_no, sc->sc_bulkout_no));
DPRINTF(("ucomopen: hid %p pipes in=%p out=%p\n",
sc->sc_uhidev, sc->sc_ipipe, sc->sc_opipe));
if (sc->sc_bulkin_no != -1) {
/* Open the bulk pipes */
err = usbd_open_pipe(sc->sc_iface, sc->sc_bulkin_no, 0,
&sc->sc_bulkin_pipe);
if (err) {
DPRINTF(("%s: open bulk out error (addr %d), err=%s\n",
sc->sc_dev.dv_xname, sc->sc_bulkin_no,
usbd_errstr(err)));
error = EIO;
goto fail_0;
}
err = usbd_open_pipe(sc->sc_iface, sc->sc_bulkout_no,
USBD_EXCLUSIVE_USE, &sc->sc_bulkout_pipe);
if (err) {
DPRINTF(("%s: open bulk in error (addr %d), err=%s\n",
sc->sc_dev.dv_xname, sc->sc_bulkout_no,
usbd_errstr(err)));
error = EIO;
goto fail_1;
}
/* Allocate a request and an input buffer and start reading. */
sc->sc_ixfer = usbd_alloc_xfer(sc->sc_udev);
if (sc->sc_ixfer == NULL) {
error = ENOMEM;
goto fail_2;
}
sc->sc_ibuf = usbd_alloc_buffer(sc->sc_ixfer,
sc->sc_ibufsizepad);
if (sc->sc_ibuf == NULL) {
error = ENOMEM;
goto fail_2;
}
sc->sc_oxfer = usbd_alloc_xfer(sc->sc_udev);
if (sc->sc_oxfer == NULL) {
error = ENOMEM;
goto fail_3;
}
} else {
/*
* input/output pipes and xfers already allocated
* as is the input buffer.
*/
sc->sc_ipipe = sc->sc_uhidev->sc_ipipe;
sc->sc_ixfer = sc->sc_uhidev->sc_ixfer;
sc->sc_opipe = sc->sc_uhidev->sc_opipe;
sc->sc_oxfer = sc->sc_uhidev->sc_oxfer;
}
sc->sc_obuf = usbd_alloc_buffer(sc->sc_oxfer,
sc->sc_obufsize + sc->sc_opkthdrlen);
if (sc->sc_obuf == NULL) {
error = ENOMEM;
goto fail_4;
}
if (sc->sc_methods->ucom_open != NULL) {
error = sc->sc_methods->ucom_open(sc->sc_parent,
sc->sc_portno);
if (error) {
ucom_cleanup(sc);
splx(s);
ucom_unlock(sc);
return (error);
}
}
ucom_status_change(sc);
ucomstartread(sc);
splx(s);
}
ucom_unlock(sc);
s = spltty();
tp = sc->sc_tty;
splx(s);
DPRINTF(("ucomopen: unit=%d, tp=%p\n", unit, tp));
tp->t_dev = dev;
if (!ISSET(tp->t_state, TS_ISOPEN)) {
SET(tp->t_state, TS_WOPEN);
ttychars(tp);
/*
* Initialize the termios status to the defaults. Add in the
* sticky bits from TIOCSFLAGS.
*/
t.c_ispeed = 0;
t.c_ospeed = TTYDEF_SPEED;
t.c_cflag = TTYDEF_CFLAG;
if (ISSET(sc->sc_swflags, TIOCFLAG_CLOCAL))
SET(t.c_cflag, CLOCAL);
if (ISSET(sc->sc_swflags, TIOCFLAG_CRTSCTS))
SET(t.c_cflag, CRTSCTS);
if (ISSET(sc->sc_swflags, TIOCFLAG_MDMBUF))
SET(t.c_cflag, MDMBUF);
/* Make sure ucomparam() will do something. */
tp->t_ospeed = 0;
(void) ucomparam(tp, &t);
tp->t_iflag = TTYDEF_IFLAG;
tp->t_oflag = TTYDEF_OFLAG;
tp->t_lflag = TTYDEF_LFLAG;
s = spltty();
ttsetwater(tp);
/*
* Turn on DTR. We must always do this, even if carrier is not
* present, because otherwise we'd have to use TIOCSDTR
* immediately after setting CLOCAL, which applications do not
* expect. We always assert DTR while the device is open
* unless explicitly requested to deassert it.
*/
ucom_dtr(sc, 1);
/* XXX CLR(sc->sc_rx_flags, RX_ANY_BLOCK);*/
ucom_hwiflow(sc);
if (ISSET(sc->sc_swflags, TIOCFLAG_SOFTCAR) || UCOMCUA(dev) ||
ISSET(sc->sc_msr, UMSR_DCD) || ISSET(tp->t_cflag, MDMBUF))
SET(tp->t_state, TS_CARR_ON);
else
CLR(tp->t_state, TS_CARR_ON);
} else if (ISSET(tp->t_state, TS_XCLUDE) && p->p_ucred->cr_uid != 0) {
error = EBUSY;
goto bad;
} else
s = spltty();
if (UCOMCUA(dev)) {
if (ISSET(tp->t_state, TS_ISOPEN)) {
/* Someone is already dialed in */
error = EBUSY;
goto bad1;
}
sc->sc_cua = 1;
} else {
/* tty (not cua) device, wait for carrier */
if (ISSET(flag, O_NONBLOCK)) {
if (sc->sc_cua) {
error = EBUSY;
goto bad1;
}
} else {
while (sc->sc_cua || (!ISSET(tp->t_cflag, CLOCAL) &&
!ISSET(tp->t_state, TS_CARR_ON))) {
SET(tp->t_state, TS_WOPEN);
error = ttysleep(tp, &tp->t_rawq,
TTIPRI | PCATCH, ttopen, 0);
/*
* If TS_WOPEN has been reset, that means the
* cua device has been closed. We don't want
* to fail in that case, so just go around
* again.
*/
if (error && ISSET(tp->t_state, TS_WOPEN)) {
CLR(tp->t_state, TS_WOPEN);
goto bad1;
}
}
}
}
splx(s);
error = ttyopen(UCOMUNIT(dev), tp);
if (error)
goto bad;
error = (*LINESW(tp, l_open))(dev, tp);
if (error)
goto bad;
return (0);
fail_4:
if (sc->sc_uhidev == NULL)
usbd_free_xfer(sc->sc_oxfer);
sc->sc_oxfer = NULL;
fail_3:
usbd_free_xfer(sc->sc_ixfer);
sc->sc_ixfer = NULL;
fail_2:
usbd_close_pipe(sc->sc_bulkout_pipe);
sc->sc_bulkout_pipe = NULL;
fail_1:
usbd_close_pipe(sc->sc_bulkin_pipe);
sc->sc_bulkin_pipe = NULL;
fail_0:
splx(s);
ucom_unlock(sc);
return (error);
bad1:
splx(s);
bad:
ucom_lock(sc);
ucom_cleanup(sc);
ucom_unlock(sc);
return (error);
}
int
ucomparam(struct tty *tp, struct termios *t)
{
struct ucom_softc *sc = ucom_cd.cd_devs[UCOMUNIT(tp->t_dev)];
int error;
if (sc == NULL || usbd_is_dying(sc->sc_uparent))
return (EIO);
/* Check requested parameters. */
if (t->c_ispeed && t->c_ispeed != t->c_ospeed)
return (EINVAL);
/*
* For the console, always force CLOCAL and !HUPCL, so that the port
* is always active.
*/
if (ISSET(sc->sc_swflags, TIOCFLAG_SOFTCAR)) {
SET(t->c_cflag, CLOCAL);
CLR(t->c_cflag, HUPCL);
}
/*
* If there were no changes, don't do anything. This avoids dropping
* input and improves performance when all we did was frob things like
* VMIN and VTIME.
*/
if (tp->t_ospeed == t->c_ospeed &&
tp->t_cflag == t->c_cflag)
return (0);
/* XXX lcr = ISSET(sc->sc_lcr, LCR_SBREAK) | cflag2lcr(t->c_cflag); */
/* And copy to tty. */
tp->t_ispeed = 0;
tp->t_ospeed = t->c_ospeed;
tp->t_cflag = t->c_cflag;
if (sc->sc_methods->ucom_param != NULL) {
error = sc->sc_methods->ucom_param(sc->sc_parent, sc->sc_portno,
t);
if (error)
return (error);
}
/* XXX worry about CHWFLOW */
/*
* Update the tty layer's idea of the carrier bit, in case we changed
* CLOCAL or MDMBUF. We don't hang up here; we only do that by
* explicit request.
*/
DPRINTF(("ucomparam: l_modem\n"));
(void) (*LINESW(tp, l_modem))(tp, 1 /* XXX carrier */ );
#if 0
XXX what if the hardware is not open
if (!ISSET(t->c_cflag, CHWFLOW)) {
if (sc->sc_tx_stopped) {
sc->sc_tx_stopped = 0;
ucomstart(tp);
}
}
#endif
return (0);
}
int
ucom_detach(struct device *self, int flags)
{
struct ucom_softc *sc = (struct ucom_softc *)self;
struct tty *tp = sc->sc_tty;
int maj, mn;
int s;
DPRINTF(("ucom_detach: sc=%p flags=%d tp=%p, pipe=%d,%d\n",
sc, flags, tp, sc->sc_bulkin_no, sc->sc_bulkout_no));
if (sc->sc_bulkin_pipe != NULL) {
usbd_abort_pipe(sc->sc_bulkin_pipe);
usbd_close_pipe(sc->sc_bulkin_pipe);
sc->sc_bulkin_pipe = NULL;
}
if (sc->sc_bulkout_pipe != NULL) {
usbd_abort_pipe(sc->sc_bulkout_pipe);
usbd_close_pipe(sc->sc_bulkout_pipe);
sc->sc_bulkout_pipe = NULL;
}
if (sc->sc_ixfer != NULL) {
if (sc->sc_uhidev == NULL)
usbd_free_xfer(sc->sc_ixfer);
sc->sc_ixfer = NULL;
}
if (sc->sc_oxfer != NULL) {
usbd_free_buffer(sc->sc_oxfer);
if (sc->sc_uhidev == NULL)
usbd_free_xfer(sc->sc_oxfer);
sc->sc_oxfer = NULL;
}
s = splusb();
if (--sc->sc_refcnt >= 0) {
/* Wake up anyone waiting */
if (tp != NULL) {
CLR(tp->t_state, TS_CARR_ON);
CLR(tp->t_cflag, CLOCAL | MDMBUF);
ttyflush(tp, FREAD|FWRITE);
}
usb_detach_wait(&sc->sc_dev);
}
splx(s);
/* locate the major number */
for (maj = 0; maj < nchrdev; maj++)
if (cdevsw[maj].d_open == ucomopen)
break;
/* Nuke the vnodes for any open instances. */
mn = self->dv_unit;
DPRINTF(("ucom_detach: maj=%d mn=%d\n", maj, mn));
vdevgone(maj, mn, mn, VCHR);
vdevgone(maj, mn | UCOMCUA_MASK, mn | UCOMCUA_MASK, VCHR);
/* Detach and free the tty. */
if (tp != NULL) {
(*LINESW(tp, l_close))(tp, FNONBLOCK, curproc);
s = spltty();
CLR(tp->t_state, TS_BUSY | TS_FLUSH);
ttyclose(tp);
splx(s);
ttyfree(tp);
sc->sc_tty = NULL;
}
return (0);
}
