static void
tiocm_to_ucom(struct ucom_softc *sc, u_long how, int ttybits)
{
u_char combits;
combits = 0;
if (ISSET(ttybits, TIOCM_DTR))
SET(combits, UMCR_DTR);
if (ISSET(ttybits, TIOCM_RTS))
SET(combits, UMCR_RTS);
switch (how) {
case TIOCMBIC:
CLR(sc->sc_mcr, combits);
break;
case TIOCMBIS:
SET(sc->sc_mcr, combits);
break;
case TIOCMSET:
CLR(sc->sc_mcr, UMCR_DTR | UMCR_RTS);
SET(sc->sc_mcr, combits);
break;
}
if (how == TIOCMSET || ISSET(combits, UMCR_DTR))
ucom_dtr(sc, (sc->sc_mcr & UMCR_DTR) != 0);
if (how == TIOCMSET || ISSET(combits, UMCR_RTS))
ucom_rts(sc, (sc->sc_mcr & UMCR_RTS) != 0);
}
static int
ucom_modem(struct tty *tp, int sigon, int sigoff)
{
struct ucom_softc *sc;
uint8_t onoff;
sc = devclass_get_softc(ucom_devclass, minor(tp->t_dev));
UCOM_MTX_ASSERT(sc, MA_OWNED);
if (!(sc->sc_flag & UCOM_FLAG_HL_READY)) {
return (0);
}
if ((sigon == 0) && (sigoff == 0)) {
if (sc->sc_mcr & SER_DTR) {
sigon |= SER_DTR;
}
if (sc->sc_mcr & SER_RTS) {
sigon |= SER_RTS;
}
if (sc->sc_msr & SER_CTS) {
sigon |= SER_CTS;
}
if (sc->sc_msr & SER_DCD) {
sigon |= SER_DCD;
}
if (sc->sc_msr & SER_DSR) {
sigon |= SER_DSR;
}
if (sc->sc_msr & SER_RI) {
sigon |= SER_RI;
}
return (sigon);
}
if (sigon & SER_DTR) {
sc->sc_mcr |= SER_DTR;
}
if (sigoff & SER_DTR) {
sc->sc_mcr &= ~SER_DTR;
}
if (sigon & SER_RTS) {
sc->sc_mcr |= SER_RTS;
}
if (sigoff & SER_RTS) {
sc->sc_mcr &= ~SER_RTS;
}
onoff = (sc->sc_mcr & SER_DTR) ? 1 : 0;
ucom_dtr(sc, onoff);
onoff = (sc->sc_mcr & SER_RTS) ? 1 : 0;
ucom_rts(sc, onoff);
return (0);
}
static int
ucom_modem(struct tty *tp, int sigon, int sigoff)
{
struct ucom_softc *sc = tty_softc(tp);
uint8_t onoff;
mtx_assert(sc->sc_mtx, MA_OWNED);
if (!(sc->sc_flag & UCOM_FLAG_HL_READY)) {
return (0);
}
if ((sigon == 0) && (sigoff == 0)) {
if (sc->sc_mcr & SER_DTR) {
sigon |= SER_DTR;
}
if (sc->sc_mcr & SER_RTS) {
sigon |= SER_RTS;
}
if (sc->sc_msr & SER_CTS) {
sigon |= SER_CTS;
}
if (sc->sc_msr & SER_DCD) {
sigon |= SER_DCD;
}
if (sc->sc_msr & SER_DSR) {
sigon |= SER_DSR;
}
if (sc->sc_msr & SER_RI) {
sigon |= SER_RI;
}
return (sigon);
}
if (sigon & SER_DTR) {
sc->sc_mcr |= SER_DTR;
}
if (sigoff & SER_DTR) {
sc->sc_mcr &= ~SER_DTR;
}
if (sigon & SER_RTS) {
sc->sc_mcr |= SER_RTS;
}
if (sigoff & SER_RTS) {
sc->sc_mcr &= ~SER_RTS;
}
onoff = (sc->sc_mcr & SER_DTR) ? 1 : 0;
ucom_dtr(sc, onoff);
onoff = (sc->sc_mcr & SER_RTS) ? 1 : 0;
ucom_rts(sc, onoff);
return (0);
}
void
ucom_dtr(struct ucom_softc *sc, int onoff)
{
DPRINTF(("ucom_dtr: onoff=%d\n", onoff));
if (sc->sc_methods->ucom_set != NULL) {
sc->sc_methods->ucom_set(sc->sc_parent, sc->sc_portno,
UCOM_SET_DTR, onoff);
/* When not using CRTSCTS, RTS follows DTR. */
if (!(sc->sc_swflags & TIOCFLAG_CRTSCTS))
ucom_rts(sc, onoff);
}
}
static void
ucom_inwakeup(struct tty *tp)
{
struct ucom_softc *sc = tty_softc(tp);
uint16_t pos;
if (sc == NULL)
return;
UCOM_MTX_ASSERT(sc, MA_OWNED);
DPRINTF("tp=%p\n", tp);
if (ttydisc_can_bypass(tp) != 0 ||
(sc->sc_flag & UCOM_FLAG_HL_READY) == 0 ||
(sc->sc_flag & UCOM_FLAG_INWAKEUP) != 0) {
return;
}
/* prevent recursion */
sc->sc_flag |= UCOM_FLAG_INWAKEUP;
pos = sc->sc_jitterbuf_out;
while (sc->sc_jitterbuf_in != pos) {
int c;
c = (char)sc->sc_jitterbuf[pos];
if (ttydisc_rint(tp, c, 0) == -1)
break;
pos++;
if (pos >= UCOM_JITTERBUF_SIZE)
pos -= UCOM_JITTERBUF_SIZE;
}
sc->sc_jitterbuf_out = pos;
/* clear RTS in async fashion */
if ((sc->sc_jitterbuf_in == pos) &&
(sc->sc_flag & UCOM_FLAG_RTS_IFLOW))
ucom_rts(sc, 0);
sc->sc_flag &= ~UCOM_FLAG_INWAKEUP;
}
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);
}
void
ucom_put_data(struct ucom_softc *sc, struct usb_page_cache *pc,
uint32_t offset, uint32_t len)
{
struct usb_page_search res;
struct tty *tp = sc->sc_tty;
char *buf;
uint32_t cnt;
UCOM_MTX_ASSERT(sc, MA_OWNED);
if (sc->sc_flag & UCOM_FLAG_CONSOLE) {
unsigned int temp;
/* get maximum RX length */
temp = (UCOM_CONS_BUFSIZE - 1) - ucom_cons_rx_high + ucom_cons_rx_low;
temp %= UCOM_CONS_BUFSIZE;
/* limit RX length */
if (temp > (UCOM_CONS_BUFSIZE - ucom_cons_rx_high))
temp = (UCOM_CONS_BUFSIZE - ucom_cons_rx_high);
if (temp > len)
temp = len;
/* copy out data */
usbd_copy_out(pc, offset, ucom_cons_rx_buf + ucom_cons_rx_high, temp);
/* update counters */
ucom_cons_rx_high += temp;
ucom_cons_rx_high %= UCOM_CONS_BUFSIZE;
return;
}
if (tty_gone(tp))
return; /* multiport device polling */
if (len == 0)
return; /* no data */
/* set a flag to prevent recursation ? */
while (len > 0) {
usbd_get_page(pc, offset, &res);
if (res.length > len) {
res.length = len;
}
len -= res.length;
offset += res.length;
/* pass characters to tty layer */
buf = res.buffer;
cnt = res.length;
/* first check if we can pass the buffer directly */
if (ttydisc_can_bypass(tp)) {
/* clear any jitter buffer */
sc->sc_jitterbuf_in = 0;
sc->sc_jitterbuf_out = 0;
if (ttydisc_rint_bypass(tp, buf, cnt) != cnt) {
DPRINTF("tp=%p, data lost\n", tp);
}
continue;
}
/* need to loop */
for (cnt = 0; cnt != res.length; cnt++) {
if (sc->sc_jitterbuf_in != sc->sc_jitterbuf_out ||
ttydisc_rint(tp, buf[cnt], 0) == -1) {
uint16_t end;
uint16_t pos;
pos = sc->sc_jitterbuf_in;
end = sc->sc_jitterbuf_out +
UCOM_JITTERBUF_SIZE - 1;
if (end >= UCOM_JITTERBUF_SIZE)
end -= UCOM_JITTERBUF_SIZE;
for (; cnt != res.length; cnt++) {
if (pos == end)
break;
sc->sc_jitterbuf[pos] = buf[cnt];
pos++;
if (pos >= UCOM_JITTERBUF_SIZE)
pos -= UCOM_JITTERBUF_SIZE;
}
sc->sc_jitterbuf_in = pos;
/* set RTS in async fashion */
if (sc->sc_flag & UCOM_FLAG_RTS_IFLOW)
ucom_rts(sc, 1);
DPRINTF("tp=%p, lost %d "
"chars\n", tp, res.length - cnt);
break;
}
}
}
ttydisc_rint_done(tp);
}
Static int
ucomctl(struct ucom_softc *sc, int bits, int how)
{
int mcr;
int msr;
int onoff;
DPRINTF(("ucomctl: bits = 0x%x, how = %d\n", bits, how));
if (how == DMGET) {
SET(bits, TIOCM_LE); /* always set TIOCM_LE bit */
DPRINTF(("ucomctl: DMGET: LE"));
mcr = sc->sc_mcr;
if (ISSET(mcr, UMCR_DTR)) {
SET(bits, TIOCM_DTR);
DPRINTF((" DTR"));
}
if (ISSET(mcr, UMCR_RTS)) {
SET(bits, TIOCM_RTS);
DPRINTF((" RTS"));
}
msr = sc->sc_msr;
if (ISSET(msr, UMSR_CTS)) {
SET(bits, TIOCM_CTS);
DPRINTF((" CTS"));
}
if (ISSET(msr, UMSR_DCD)) {
SET(bits, TIOCM_CD);
DPRINTF((" CD"));
}
if (ISSET(msr, UMSR_DSR)) {
SET(bits, TIOCM_DSR);
DPRINTF((" DSR"));
}
if (ISSET(msr, UMSR_RI)) {
SET(bits, TIOCM_RI);
DPRINTF((" RI"));
}
DPRINTF(("\n"));
return (bits);
}
mcr = 0;
if (ISSET(bits, TIOCM_DTR))
SET(mcr, UMCR_DTR);
if (ISSET(bits, TIOCM_RTS))
SET(mcr, UMCR_RTS);
switch (how) {
case DMSET:
sc->sc_mcr = mcr;
break;
case DMBIS:
sc->sc_mcr |= mcr;
break;
case DMBIC:
sc->sc_mcr &= ~mcr;
break;
}
onoff = ISSET(sc->sc_mcr, UMCR_DTR) ? 1 : 0;
ucom_dtr(sc, onoff);
onoff = ISSET(sc->sc_mcr, UMCR_RTS) ? 1 : 0;
ucom_rts(sc, onoff);
return (0);
}