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);
}
int
ucomopen(dev_t dev, int flag, int mode, struct proc *p)
{
int unit = UCOMUNIT(dev);
struct ucom_softc *sc;
int error;
if (unit >= ucom_cd.cd_ndevs)
return (ENXIO);
sc = ucom_cd.cd_devs[unit];
if (sc == NULL)
return (ENXIO);
if (usbd_is_dying(sc->sc_uparent))
return (EIO);
if (ISSET(sc->sc_dev.dv_flags, DVF_ACTIVE) == 0)
return (ENXIO);
sc->sc_refcnt++;
error = ucom_do_open(dev, flag, mode, p);
if (--sc->sc_refcnt < 0)
usb_detach_wakeup(&sc->sc_dev);
return (error);
}
struct tty *
ucomtty(dev_t dev)
{
struct ucom_softc *sc = device_lookup_private(&ucom_cd, UCOMUNIT(dev));
return ((sc != NULL) ? sc->sc_tty : NULL);
}
Static void
ucomstop(struct tty *tp, int flag)
{
struct ucom_softc *sc;
int s;
USB_GET_SC(ucom, UCOMUNIT(tp->t_dev), sc);
DPRINTF(("ucomstop: %d\n", flag));
if (flag & FREAD) {
DPRINTF(("ucomstop: read\n"));
ucomstopread(sc);
}
if (flag & FWRITE) {
DPRINTF(("ucomstop: write\n"));
s = spltty();
if (ISSET(tp->t_state, TS_BUSY)) {
/* XXX do what? */
if (!ISSET(tp->t_state, TS_TTSTOP))
SET(tp->t_state, TS_FLUSH);
}
splx(s);
}
DPRINTF(("ucomstop: done\n"));
}
static void
ucomstart(struct tty *tp)
{
struct ucom_softc *sc = device_lookup_private(&ucom_cd,
UCOMUNIT(tp->t_dev));
struct ucom_buffer *ub;
int s;
u_char *data;
int cnt;
if (sc->sc_dying)
return;
s = spltty();
if (ISSET(tp->t_state, TS_BUSY | TS_TIMEOUT | TS_TTSTOP)) {
DPRINTFN(4,("ucomstart: no go, state=0x%x\n", tp->t_state));
goto out;
}
if (sc->sc_tx_stopped)
goto out;
if (!ttypull(tp))
goto out;
/* Grab the first contiguous region of buffer space. */
data = tp->t_outq.c_cf;
cnt = ndqb(&tp->t_outq, 0);
if (cnt == 0) {
DPRINTF(("ucomstart: cnt==0\n"));
goto out;
}
ub = SIMPLEQ_FIRST(&sc->sc_obuff_free);
KASSERT(ub != NULL);
SIMPLEQ_REMOVE_HEAD(&sc->sc_obuff_free, ub_link);
if (SIMPLEQ_FIRST(&sc->sc_obuff_free) == NULL)
SET(tp->t_state, TS_BUSY);
if (cnt > sc->sc_obufsize)
cnt = sc->sc_obufsize;
if (sc->sc_methods->ucom_write != NULL)
sc->sc_methods->ucom_write(sc->sc_parent, sc->sc_portno,
ub->ub_data, data, &cnt);
else
memcpy(ub->ub_data, data, cnt);
ub->ub_len = cnt;
ub->ub_index = 0;
SIMPLEQ_INSERT_TAIL(&sc->sc_obuff_full, ub, ub_link);
softint_schedule(sc->sc_si);
out:
splx(s);
}
struct tty *
ucomtty(dev_t dev)
{
struct ucom_softc *sc = device_lookup_private(&ucom_cd, UCOMUNIT(dev));
struct tty *tp = sc->sc_tty;
return (tp);
}
struct tty *
ucomtty(dev_t dev)
{
struct ucom_softc *sc = ucom_cd.cd_devs[UCOMUNIT(dev)];
struct tty *tp = sc->sc_tty;
return (tp);
}
static int
ucomclose(dev_t dev, int flag, int mode, usb_proc_ptr p)
{
struct ucom_softc *sc;
struct tty *tp;
int s;
USB_GET_SC(ucom, UCOMUNIT(dev), sc);
tp = sc->sc_tty;
DPRINTF(("%s: ucomclose: unit = %d\n",
USBDEVNAME(sc->sc_dev), UCOMUNIT(dev)));
if (!ISSET(tp->t_state, TS_ISOPEN))
goto quit;
s = spltty();
(*linesw[tp->t_line].l_close)(tp, flag);
disc_optim(tp, &tp->t_termios, sc);
ttyclose(tp);
splx(s);
if (sc->sc_dying)
goto quit;
if (!ISSET(tp->t_state, TS_ISOPEN)) {
/*
* Although we got a last close, the device may still be in
* use; e.g. if this was the dialout node, and there are still
* processes waiting for carrier on the non-dialout node.
*/
ucom_cleanup(sc);
}
if (sc->sc_callback->ucom_close != NULL)
sc->sc_callback->ucom_close(sc->sc_parent, sc->sc_portno);
quit:
if (--sc->sc_refcnt < 0)
usb_detach_wakeup(USBDEV(sc->sc_dev));
return (0);
}
int
ucomclose(dev_t dev, int flag, int mode, struct lwp *l)
{
struct ucom_softc *sc = device_lookup_private(&ucom_cd, UCOMUNIT(dev));
struct tty *tp;
int s;
DPRINTF(("ucomclose: unit=%d\n", UCOMUNIT(dev)));
if (sc == NULL)
return 0;
tp = sc->sc_tty;
if (!ISSET(tp->t_state, TS_ISOPEN))
return (0);
s = spltty();
sc->sc_refcnt++;
(*tp->t_linesw->l_close)(tp, flag);
ttyclose(tp);
if (!ISSET(tp->t_state, TS_ISOPEN) && tp->t_wopen == 0) {
/*
* Although we got a last close, the device may still be in
* use; e.g. if this was the dialout node, and there are still
* processes waiting for carrier on the non-dialout node.
*/
ucom_cleanup(sc);
}
if (sc->sc_methods->ucom_close != NULL)
sc->sc_methods->ucom_close(sc->sc_parent, sc->sc_portno);
if (--sc->sc_refcnt < 0)
usb_detach_wakeupold(sc->sc_dev);
splx(s);
return (0);
}
int
ucomioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p)
{
struct ucom_softc *sc = ucom_cd.cd_devs[UCOMUNIT(dev)];
int error;
sc->sc_refcnt++;
error = ucom_do_ioctl(sc, cmd, data, flag, p);
if (--sc->sc_refcnt < 0)
usb_detach_wakeup(&sc->sc_dev);
return (error);
}
int
ucomioctl(dev_t dev, u_long cmd, void *data, int flag, struct lwp *l)
{
struct ucom_softc *sc = device_lookup_private(&ucom_cd, UCOMUNIT(dev));
int error;
sc->sc_refcnt++;
error = ucom_do_ioctl(sc, cmd, data, flag, l);
if (--sc->sc_refcnt < 0)
usb_detach_wakeup(USBDEV(sc->sc_dev));
return (error);
}
struct tty *
ucomtty(dev_t dev)
{
struct ucom_softc *sc = ucom_cd.cd_devs[UCOMUNIT(dev)];
/*
* Return a pointer to our tty even if the device is dying
* in order to properly close it in the detach routine.
*/
if (sc == NULL)
return (NULL);
return (sc->sc_tty);
}
int
ucompoll(dev_t dev, int events, struct lwp *l)
{
struct ucom_softc *sc = device_lookup_private(&ucom_cd, UCOMUNIT(dev));
struct tty *tp = sc->sc_tty;
int revents;
if (sc->sc_dying)
return (POLLHUP);
sc->sc_refcnt++;
revents = ((*tp->t_linesw->l_poll)(tp, events, l));
if (--sc->sc_refcnt < 0)
usb_detach_wakeup(USBDEV(sc->sc_dev));
return (revents);
}
int
ucomwrite(dev_t dev, struct uio *uio, int flag)
{
struct ucom_softc *sc = device_lookup_private(&ucom_cd, UCOMUNIT(dev));
struct tty *tp = sc->sc_tty;
int error;
if (sc->sc_dying)
return (EIO);
sc->sc_refcnt++;
error = ((*tp->t_linesw->l_write)(tp, uio, flag));
if (--sc->sc_refcnt < 0)
usb_detach_wakeup(USBDEV(sc->sc_dev));
return (error);
}
int
ucomclose(dev_t dev, int flag, int mode, struct proc *p)
{
struct ucom_softc *sc = ucom_cd.cd_devs[UCOMUNIT(dev)];
int error;
if (sc == NULL || usbd_is_dying(sc->sc_uparent))
return (EIO);
sc->sc_refcnt++;
error = ucom_do_close(sc, flag, mode, p);
if (--sc->sc_refcnt < 0)
usb_detach_wakeup(&sc->sc_dev);
return (error);
}
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);
}
static int
ucomhwiflow(struct tty *tp, int block)
{
struct ucom_softc *sc = device_lookup_private(&ucom_cd,
UCOMUNIT(tp->t_dev));
int old;
old = sc->sc_rx_stopped;
sc->sc_rx_stopped = (u_char)block;
if (old && !block) {
int s = splusb();
sc->sc_rx_unblock = 1;
softint_schedule(sc->sc_si);
splx(s);
}
return (1);
}
static int
ucomwrite(dev_t dev, struct uio *uio, int flag)
{
struct ucom_softc *sc;
struct tty *tp;
int error;
USB_GET_SC(ucom, UCOMUNIT(dev), sc);
tp = sc->sc_tty;
DPRINTF(("ucomwrite: tp = %p, flag = 0x%x\n", tp, flag));
if (sc->sc_dying)
return (EIO);
error = (*linesw[tp->t_line].l_write)(tp, uio, flag);
DPRINTF(("ucomwrite: error = %d\n", error));
return (error);
}
static int
ucomparam(struct tty *tp, struct termios *t)
{
struct ucom_softc *sc = device_lookup_private(&ucom_cd,
UCOMUNIT(tp->t_dev));
int error;
if (sc->sc_dying)
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) (*tp->t_linesw->l_modem)(tp, ISSET(sc->sc_msr, UMSR_DCD));
#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);
}
static int
ucomioctl(dev_t dev, u_long cmd, caddr_t data, int flag, usb_proc_ptr p)
{
struct ucom_softc *sc;
struct tty *tp;
int error;
int s;
int d;
#if defined(COMPAT_43) || defined(COMPAT_SUNOS)
u_long oldcmd;
struct termios term;
#endif
USB_GET_SC(ucom, UCOMUNIT(dev), sc);
tp = sc->sc_tty;
if (sc->sc_dying)
return (EIO);
DPRINTF(("ucomioctl: cmd = 0x%08lx\n", cmd));
#if defined(COMPAT_43) || defined(COMPAT_SUNOS)
term = tp->t_termios;
oldcmd = cmd;
error = ttsetcompat(tp, &cmd, data, &term);
if (error != 0)
return (error);
if (cmd != oldcmd)
data = (caddr_t)&term;
#endif
error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data, flag, p);
if (error != ENOIOCTL) {
DPRINTF(("ucomioctl: l_ioctl: error = %d\n", error));
return (error);
}
s = spltty();
error = ttioctl(tp, cmd, data, flag);
disc_optim(tp, &tp->t_termios, sc);
if (error != ENOIOCTL) {
splx(s);
DPRINTF(("ucomioctl: ttioctl: error = %d\n", error));
return (error);
}
if (sc->sc_callback->ucom_ioctl != NULL) {
error = sc->sc_callback->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));
switch (cmd) {
case TIOCSBRK:
DPRINTF(("ucomioctl: TIOCSBRK\n"));
ucom_break(sc, 1);
break;
case TIOCCBRK:
DPRINTF(("ucomioctl: TIOCCBRK\n"));
ucom_break(sc, 0);
break;
case TIOCSDTR:
DPRINTF(("ucomioctl: TIOCSDTR\n"));
(void)ucomctl(sc, TIOCM_DTR, DMBIS);
break;
case TIOCCDTR:
DPRINTF(("ucomioctl: TIOCCDTR\n"));
(void)ucomctl(sc, TIOCM_DTR, DMBIC);
break;
case TIOCMSET:
d = *(int *)data;
DPRINTF(("ucomioctl: TIOCMSET, 0x%x\n", d));
(void)ucomctl(sc, d, DMSET);
break;
case TIOCMBIS:
d = *(int *)data;
DPRINTF(("ucomioctl: TIOCMBIS, 0x%x\n", d));
(void)ucomctl(sc, d, DMBIS);
break;
case TIOCMBIC:
d = *(int *)data;
DPRINTF(("ucomioctl: TIOCMBIC, 0x%x\n", d));
(void)ucomctl(sc, d, DMBIC);
break;
case TIOCMGET:
d = ucomctl(sc, 0, DMGET);
DPRINTF(("ucomioctl: TIOCMGET, 0x%x\n", d));
*(int *)data = d;
break;
default:
DPRINTF(("ucomioctl: error: our cmd = 0x%08lx\n", cmd));
error = ENOTTY;
break;
}
splx(s);
return (error);
}
int
ucomopen(dev_t dev, int flag, int mode, struct lwp *l)
{
int unit = UCOMUNIT(dev);
usbd_status err;
struct ucom_softc *sc = device_lookup_private(&ucom_cd, unit);
struct ucom_buffer *ub;
struct tty *tp;
int s, i;
int error;
if (sc == NULL)
return (ENXIO);
if (sc->sc_dying)
return (EIO);
if (!device_is_active(sc->sc_dev))
return (ENXIO);
tp = sc->sc_tty;
DPRINTF(("ucomopen: unit=%d, tp=%p\n", unit, tp));
if (kauth_authorize_device_tty(l->l_cred, KAUTH_DEVICE_TTY_OPEN, tp))
return (EBUSY);
s = spltty();
/*
* Do the following iff this is a first open.
*/
while (sc->sc_opening)
tsleep(&sc->sc_opening, PRIBIO, "ucomop", 0);
if (sc->sc_dying) {
splx(s);
return (EIO);
}
sc->sc_opening = 1;
if (!ISSET(tp->t_state, TS_ISOPEN) && tp->t_wopen == 0) {
struct termios t;
tp->t_dev = dev;
if (sc->sc_methods->ucom_open != NULL) {
error = sc->sc_methods->ucom_open(sc->sc_parent,
sc->sc_portno);
if (error) {
ucom_cleanup(sc);
sc->sc_opening = 0;
wakeup(&sc->sc_opening);
splx(s);
return (error);
}
}
ucom_status_change(sc);
/*
* 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;
ttychars(tp);
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. Ditto RTS.
*/
ucom_dtr(sc, 1);
ucom_rts(sc, 1);
DPRINTF(("ucomopen: open pipes in=%d out=%d\n",
sc->sc_bulkin_no, sc->sc_bulkout_no));
/* Open the bulk pipes */
err = usbd_open_pipe(sc->sc_iface, sc->sc_bulkin_no,
USBD_EXCLUSIVE_USE, &sc->sc_bulkin_pipe);
if (err) {
DPRINTF(("%s: open bulk in error (addr %d), err=%s\n",
USBDEVNAME(sc->sc_dev), 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 out error (addr %d), err=%s\n",
USBDEVNAME(sc->sc_dev), sc->sc_bulkout_no,
usbd_errstr(err)));
error = EIO;
goto fail_1;
}
sc->sc_rx_unblock = 0;
sc->sc_rx_stopped = 0;
sc->sc_tx_stopped = 0;
memset(sc->sc_ibuff, 0, sizeof(sc->sc_ibuff));
memset(sc->sc_obuff, 0, sizeof(sc->sc_obuff));
SIMPLEQ_INIT(&sc->sc_ibuff_empty);
SIMPLEQ_INIT(&sc->sc_ibuff_full);
SIMPLEQ_INIT(&sc->sc_obuff_free);
SIMPLEQ_INIT(&sc->sc_obuff_full);
/* Allocate input buffers */
for (ub = &sc->sc_ibuff[0]; ub != &sc->sc_ibuff[UCOM_IN_BUFFS];
ub++) {
ub->ub_xfer = usbd_alloc_xfer(sc->sc_udev);
if (ub->ub_xfer == NULL) {
error = ENOMEM;
goto fail_2;
}
ub->ub_data = usbd_alloc_buffer(ub->ub_xfer,
sc->sc_ibufsizepad);
if (ub->ub_data == NULL) {
error = ENOMEM;
goto fail_2;
}
if (ucomsubmitread(sc, ub) != USBD_NORMAL_COMPLETION) {
error = EIO;
goto fail_2;
}
}
for (ub = &sc->sc_obuff[0]; ub != &sc->sc_obuff[UCOM_OUT_BUFFS];
ub++) {
ub->ub_xfer = usbd_alloc_xfer(sc->sc_udev);
if (ub->ub_xfer == NULL) {
error = ENOMEM;
goto fail_2;
}
ub->ub_data = usbd_alloc_buffer(ub->ub_xfer,
sc->sc_obufsize);
if (ub->ub_data == NULL) {
error = ENOMEM;
goto fail_2;
}
SIMPLEQ_INSERT_TAIL(&sc->sc_obuff_free, ub, ub_link);
}
}
sc->sc_opening = 0;
wakeup(&sc->sc_opening);
splx(s);
error = ttyopen(tp, UCOMDIALOUT(dev), ISSET(flag, O_NONBLOCK));
if (error)
goto bad;
error = (*tp->t_linesw->l_open)(dev, tp);
if (error)
goto bad;
return (0);
fail_2:
usbd_abort_pipe(sc->sc_bulkin_pipe);
for (i = 0; i < UCOM_IN_BUFFS; i++) {
if (sc->sc_ibuff[i].ub_xfer != NULL) {
usbd_free_xfer(sc->sc_ibuff[i].ub_xfer);
sc->sc_ibuff[i].ub_xfer = NULL;
sc->sc_ibuff[i].ub_data = NULL;
}
}
usbd_abort_pipe(sc->sc_bulkout_pipe);
for (i = 0; i < UCOM_OUT_BUFFS; i++) {
if (sc->sc_obuff[i].ub_xfer != NULL) {
usbd_free_xfer(sc->sc_obuff[i].ub_xfer);
sc->sc_obuff[i].ub_xfer = NULL;
sc->sc_obuff[i].ub_data = NULL;
}
}
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:
sc->sc_opening = 0;
wakeup(&sc->sc_opening);
splx(s);
return (error);
bad:
s = spltty();
CLR(tp->t_state, TS_BUSY);
if (!ISSET(tp->t_state, TS_ISOPEN) && tp->t_wopen == 0) {
/*
* We failed to open the device, and nobody else had it opened.
* Clean up the state as appropriate.
*/
ucom_cleanup(sc);
}
splx(s);
return (error);
}
Static int
ucomparam(struct tty *tp, struct termios *t)
{
struct ucom_softc *sc;
int error;
usbd_status uerr;
USB_GET_SC(ucom, UCOMUNIT(tp->t_dev), sc);
if (sc->sc_dying)
return (EIO);
DPRINTF(("ucomparam: sc = %p\n", sc));
/* Check requested parameters. */
if (t->c_ospeed < 0) {
DPRINTF(("ucomparam: negative ospeed\n"));
return (EINVAL);
}
if (t->c_ispeed && t->c_ispeed != t->c_ospeed) {
DPRINTF(("ucomparam: mismatch ispeed and ospeed\n"));
return (EINVAL);
}
/*
* 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);
/* And copy to tty. */
tp->t_ispeed = 0;
tp->t_ospeed = t->c_ospeed;
tp->t_cflag = t->c_cflag;
if (sc->sc_callback->ucom_param == NULL)
return (0);
ucomstopread(sc);
error = sc->sc_callback->ucom_param(sc->sc_parent, sc->sc_portno, t);
if (error) {
DPRINTF(("ucomparam: callback: error = %d\n", error));
return (error);
}
ttsetwater(tp);
if (t->c_cflag & CRTS_IFLOW) {
sc->sc_state |= UCS_RTS_IFLOW;
} else if (sc->sc_state & UCS_RTS_IFLOW) {
sc->sc_state &= ~UCS_RTS_IFLOW;
(void)ucomctl(sc, UMCR_RTS, DMBIS);
}
disc_optim(tp, t, sc);
uerr = ucomstartread(sc);
if (uerr != USBD_NORMAL_COMPLETION)
return (EIO);
return (0);
}
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);
}
void
ucomstart(struct tty *tp)
{
struct ucom_softc *sc = ucom_cd.cd_devs[UCOMUNIT(tp->t_dev)];
usbd_status err;
int s;
u_char *data;
int cnt;
if (sc == NULL || usbd_is_dying(sc->sc_uparent))
return;
s = spltty();
if (ISSET(tp->t_state, TS_BUSY | TS_TIMEOUT | TS_TTSTOP)) {
DPRINTFN(4,("ucomstart: no go, state=0x%x\n", tp->t_state));
goto out;
}
if (sc->sc_tx_stopped)
goto out;
ttwakeupwr(tp);
if (tp->t_outq.c_cc == 0)
goto out;
/* Grab the first contiguous region of buffer space. */
data = tp->t_outq.c_cf;
cnt = ndqb(&tp->t_outq, 0);
if (cnt == 0) {
DPRINTF(("ucomstart: cnt==0\n"));
goto out;
}
SET(tp->t_state, TS_BUSY);
if (cnt > sc->sc_obufsize) {
DPRINTF(("ucomstart: big buffer %d chars\n", cnt));
cnt = sc->sc_obufsize;
}
if (sc->sc_methods->ucom_write != NULL)
sc->sc_methods->ucom_write(sc->sc_parent, sc->sc_portno,
sc->sc_obuf, data, &cnt);
else
memcpy(sc->sc_obuf, data, cnt);
DPRINTFN(4,("ucomstart: %d chars\n", cnt));
#ifdef DIAGNOSTIC
if (sc->sc_oxfer == NULL) {
printf("ucomstart: null oxfer\n");
goto out;
}
#endif
if (sc->sc_bulkout_pipe != NULL) {
usbd_setup_xfer(sc->sc_oxfer, sc->sc_bulkout_pipe,
(void *)sc, sc->sc_obuf, cnt,
USBD_NO_COPY, USBD_NO_TIMEOUT, ucomwritecb);
} else {
usbd_setup_xfer(sc->sc_oxfer, sc->sc_opipe,
(void *)sc, sc->sc_obuf, cnt,
USBD_NO_COPY, USBD_NO_TIMEOUT, ucomwritecb);
}
/* What can we do on error? */
err = usbd_transfer(sc->sc_oxfer);
#ifdef DIAGNOSTIC
if (err != USBD_IN_PROGRESS)
printf("ucomstart: err=%s\n", usbd_errstr(err));
#endif
out:
splx(s);
}
Static int
ucomopen(dev_t dev, int flag, int mode, usb_proc_ptr p)
{
int unit = UCOMUNIT(dev);
struct ucom_softc *sc;
usbd_status err;
struct tty *tp;
int s;
int error;
USB_GET_SC_OPEN(ucom, unit, sc);
if (sc->sc_dying)
return (ENXIO);
tp = sc->sc_tty;
DPRINTF(("%s: ucomopen: tp = %p\n", USBDEVNAME(sc->sc_dev), tp));
if (ISSET(tp->t_state, TS_ISOPEN) &&
ISSET(tp->t_state, TS_XCLUDE) &&
suser(p))
return (EBUSY);
/*
* Do the following iff this is a first open.
*/
s = spltty();
while (sc->sc_opening)
tsleep(&sc->sc_opening, PRIBIO, "ucomop", 0);
sc->sc_opening = 1;
if (!ISSET(tp->t_state, TS_ISOPEN)) {
struct termios t;
sc->sc_poll = 0;
sc->sc_lsr = sc->sc_msr = sc->sc_mcr = 0;
tp->t_dev = dev;
/*
* 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;
/* 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;
ttychars(tp);
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.
*/
(void)ucomctl(sc, TIOCM_DTR | TIOCM_RTS, DMBIS);
/* Device specific open */
if (sc->sc_callback->ucom_open != NULL) {
error = sc->sc_callback->ucom_open(sc->sc_parent,
sc->sc_portno);
if (error) {
ucom_cleanup(sc);
sc->sc_opening = 0;
wakeup(&sc->sc_opening);
splx(s);
return (error);
}
}
DPRINTF(("ucomopen: open pipes in = %d out = %d\n",
sc->sc_bulkin_no, sc->sc_bulkout_no));
/* Open the bulk pipes */
/* Bulk-in pipe */
err = usbd_open_pipe(sc->sc_iface, sc->sc_bulkin_no, 0,
&sc->sc_bulkin_pipe);
if (err) {
printf("%s: open bulk in error (addr %d): %s\n",
USBDEVNAME(sc->sc_dev), sc->sc_bulkin_no,
usbd_errstr(err));
error = EIO;
goto fail_0;
}
/* Bulk-out pipe */
err = usbd_open_pipe(sc->sc_iface, sc->sc_bulkout_no,
USBD_EXCLUSIVE_USE, &sc->sc_bulkout_pipe);
if (err) {
printf("%s: open bulk out error (addr %d): %s\n",
USBDEVNAME(sc->sc_dev), 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_3;
}
sc->sc_oxfer = usbd_alloc_xfer(sc->sc_udev);
if (sc->sc_oxfer == NULL) {
error = ENOMEM;
goto fail_3;
}
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;
}
/*
* Handle initial DCD.
*/
if (ISSET(sc->sc_msr, UMSR_DCD) ||
(minor(dev) & UCOM_CALLOUT_MASK))
(*linesw[tp->t_line].l_modem)(tp, 1);
ucomstartread(sc);
}
sc->sc_opening = 0;
wakeup(&sc->sc_opening);
splx(s);
error = ttyopen(dev, tp);
if (error)
goto bad;
error = (*linesw[tp->t_line].l_open)(dev, tp);
if (error)
goto bad;
disc_optim(tp, &tp->t_termios, sc);
DPRINTF(("%s: ucomopen: success\n", USBDEVNAME(sc->sc_dev)));
sc->sc_poll = 1;
sc->sc_refcnt++;
return (0);
fail_4:
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:
sc->sc_opening = 0;
wakeup(&sc->sc_opening);
splx(s);
return (error);
bad:
if (!ISSET(tp->t_state, TS_ISOPEN)) {
/*
* We failed to open the device, and nobody else had it opened.
* Clean up the state as appropriate.
*/
ucom_cleanup(sc);
}
DPRINTF(("%s: ucomopen: failed\n", USBDEVNAME(sc->sc_dev)));
return (error);
}
Static void
ucomstart(struct tty *tp)
{
struct ucom_softc *sc;
struct cblock *cbp;
usbd_status err;
int s;
u_char *data;
int cnt;
USB_GET_SC(ucom, UCOMUNIT(tp->t_dev), sc);
DPRINTF(("ucomstart: sc = %p\n", sc));
if (sc->sc_dying)
return;
s = spltty();
if (tp->t_state & TS_TBLOCK) {
if (ISSET(sc->sc_mcr, UMCR_RTS) &&
ISSET(sc->sc_state, UCS_RTS_IFLOW)) {
DPRINTF(("ucomstart: clear RTS\n"));
(void)ucomctl(sc, UMCR_RTS, DMBIC);
}
} else {
if (!ISSET(sc->sc_mcr, UMCR_RTS) &&
tp->t_rawq.c_cc <= tp->t_ilowat &&
ISSET(sc->sc_state, UCS_RTS_IFLOW)) {
DPRINTF(("ucomstart: set RTS\n"));
(void)ucomctl(sc, UMCR_RTS, DMBIS);
}
}
if (ISSET(tp->t_state, TS_BUSY | TS_TIMEOUT | TS_TTSTOP)) {
ttwwakeup(tp);
DPRINTF(("ucomstart: stopped\n"));
goto out;
}
if (tp->t_outq.c_cc <= tp->t_olowat) {
if (ISSET(tp->t_state, TS_SO_OLOWAT)) {
CLR(tp->t_state, TS_SO_OLOWAT);
wakeup(TSA_OLOWAT(tp));
}
selwakeup(&tp->t_wsel);
if (tp->t_outq.c_cc == 0) {
if (ISSET(tp->t_state, TS_BUSY | TS_SO_OCOMPLETE) ==
TS_SO_OCOMPLETE && tp->t_outq.c_cc == 0) {
CLR(tp->t_state, TS_SO_OCOMPLETE);
wakeup(TSA_OCOMPLETE(tp));
}
goto out;
}
}
/* Grab the first contiguous region of buffer space. */
data = tp->t_outq.c_cf;
cbp = (struct cblock *) ((intptr_t) tp->t_outq.c_cf & ~CROUND);
cnt = min((char *) (cbp+1) - tp->t_outq.c_cf, tp->t_outq.c_cc);
if (cnt == 0) {
DPRINTF(("ucomstart: cnt == 0\n"));
goto out;
}
SET(tp->t_state, TS_BUSY);
if (cnt > sc->sc_obufsize) {
DPRINTF(("ucomstart: big buffer %d chars\n", cnt));
cnt = sc->sc_obufsize;
}
if (sc->sc_callback->ucom_write != NULL)
sc->sc_callback->ucom_write(sc->sc_parent, sc->sc_portno,
sc->sc_obuf, data, &cnt);
else
memcpy(sc->sc_obuf, data, cnt);
DPRINTF(("ucomstart: %d chars\n", cnt));
usbd_setup_xfer(sc->sc_oxfer, sc->sc_bulkout_pipe,
(usbd_private_handle)sc, sc->sc_obuf, cnt,
USBD_NO_COPY, USBD_NO_TIMEOUT, ucomwritecb);
/* What can we do on error? */
err = usbd_transfer(sc->sc_oxfer);
if (err != USBD_IN_PROGRESS)
printf("ucomstart: err=%s\n", usbd_errstr(err));
ttwwakeup(tp);
out:
splx(s);
}
