static void
ucom_close(struct tty *tp)
{
struct ucom_softc *sc = tty_softc(tp);
UCOM_MTX_ASSERT(sc, MA_OWNED);
DPRINTF("tp=%p\n", tp);
if (!(sc->sc_flag & UCOM_FLAG_HL_READY)) {
DPRINTF("tp=%p already closed\n", tp);
return;
}
ucom_shutdown(sc);
ucom_queue_command(sc, ucom_cfg_close, NULL,
&sc->sc_close_task[0].hdr,
&sc->sc_close_task[1].hdr);
sc->sc_flag &= ~(UCOM_FLAG_HL_READY | UCOM_FLAG_RTS_IFLOW);
if (sc->sc_callback->ucom_stop_read) {
(sc->sc_callback->ucom_stop_read) (sc);
}
}
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 void
ucom_outwakeup(struct tty *tp)
{
struct ucom_softc *sc = tty_softc(tp);
UCOM_MTX_ASSERT(sc, MA_OWNED);
DPRINTF("sc = %p\n", sc);
if (!(sc->sc_flag & UCOM_FLAG_HL_READY)) {
/* The higher layer is not ready */
return;
}
ucom_start_transfers(sc);
}
static void
ucom_shutdown(struct ucom_softc *sc)
{
struct tty *tp = sc->sc_tty;
UCOM_MTX_ASSERT(sc, MA_OWNED);
DPRINTF("\n");
/*
* Hang up if necessary:
*/
if (tp->t_termios.c_cflag & HUPCL) {
ucom_modem(tp, 0, SER_DTR);
}
}
static void
ucom_queue_command(struct ucom_softc *sc,
usb_proc_callback_t *fn, struct termios *pt,
struct usb_proc_msg *t0, struct usb_proc_msg *t1)
{
struct ucom_super_softc *ssc = sc->sc_super;
struct ucom_param_task *task;
UCOM_MTX_ASSERT(sc, MA_OWNED);
if (usb_proc_is_gone(&ssc->sc_tq)) {
DPRINTF("proc is gone\n");
return; /* nothing to do */
}
/*
* NOTE: The task cannot get executed before we drop the
* "sc_mtx" mutex. It is safe to update fields in the message
* structure after that the message got queued.
*/
task = (struct ucom_param_task *)
usb_proc_msignal(&ssc->sc_tq, t0, t1);
/* Setup callback and softc pointers */
task->hdr.pm_callback = fn;
task->sc = sc;
/*
* Make a copy of the termios. This field is only present if
* the "pt" field is not NULL.
*/
if (pt != NULL)
task->termios_copy = *pt;
/*
* Closing the device should be synchronous.
*/
if (fn == ucom_cfg_close)
usb_proc_mwait(&ssc->sc_tq, t0, t1);
/*
* In case of multiple configure requests,
* keep track of the last one!
*/
if (fn == ucom_cfg_start_transfers)
sc->sc_last_start_xfer = &task->hdr;
}
void
ucom_status_change(struct ucom_softc *sc)
{
UCOM_MTX_ASSERT(sc, MA_OWNED);
if (sc->sc_flag & UCOM_FLAG_CONSOLE)
return; /* not supported */
if (!(sc->sc_flag & UCOM_FLAG_HL_READY)) {
return;
}
DPRINTF("\n");
ucom_queue_command(sc, ucom_cfg_status_change, NULL,
&sc->sc_status_task[0].hdr,
&sc->sc_status_task[1].hdr);
}
static void
ucom_start(struct tty *tp)
{
struct ucom_softc *sc;
sc = devclass_get_softc(ucom_devclass, minor(tp->t_dev));
UCOM_MTX_ASSERT(sc, MA_OWNED);
DPRINTF("sc = %p\n", sc);
if (!(sc->sc_flag & UCOM_FLAG_HL_READY)) {
/* The higher layer is not ready */
return;
}
ucom_start_transfers(sc);
}
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;
}
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 bool
ucom_busy(struct tty *tp)
{
struct ucom_softc *sc = tty_softc(tp);
const uint8_t txidle = ULSR_TXRDY | ULSR_TSRE;
UCOM_MTX_ASSERT(sc, MA_OWNED);
DPRINTFN(3, "sc = %p lsr 0x%02x\n", sc, sc->sc_lsr);
/*
* If the driver maintains the txidle bits in LSR, we can use them to
* determine whether the transmitter is busy or idle. Otherwise we have
* to assume it is idle to avoid hanging forever on tcdrain(3).
*/
if (sc->sc_flag & UCOM_FLAG_LSRTXIDLE)
return ((sc->sc_lsr & txidle) != txidle);
else
return (false);
}
static void
ucom_line_state(struct ucom_softc *sc,
uint8_t set_bits, uint8_t clear_bits)
{
UCOM_MTX_ASSERT(sc, MA_OWNED);
if (!(sc->sc_flag & UCOM_FLAG_HL_READY)) {
return;
}
DPRINTF("on=0x%02x, off=0x%02x\n", set_bits, clear_bits);
/* update current programmed line state */
sc->sc_pls_curr |= set_bits;
sc->sc_pls_curr &= ~clear_bits;
sc->sc_pls_set |= set_bits;
sc->sc_pls_clr |= clear_bits;
/* defer driver programming */
ucom_queue_command(sc, ucom_cfg_line_state, NULL,
&sc->sc_line_state_task[0].hdr,
&sc->sc_line_state_task[1].hdr);
}
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);
}
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
ucom_param(struct tty *tp, struct termios *t)
{
struct ucom_softc *sc = tty_softc(tp);
uint8_t opened;
int error;
UCOM_MTX_ASSERT(sc, MA_OWNED);
opened = 0;
error = 0;
if (!(sc->sc_flag & UCOM_FLAG_HL_READY)) {
/* XXX the TTY layer should call "open()" first! */
/*
* Not quite: Its ordering is partly backwards, but
* some parameters must be set early in ttydev_open(),
* possibly before calling ttydevsw_open().
*/
error = ucom_open(tp);
if (error)
goto done;
opened = 1;
}
DPRINTF("sc = %p\n", sc);
/* Check requested parameters. */
if (t->c_ispeed && (t->c_ispeed != t->c_ospeed)) {
/* XXX c_ospeed == 0 is perfectly valid. */
DPRINTF("mismatch ispeed and ospeed\n");
error = EINVAL;
goto done;
}
t->c_ispeed = t->c_ospeed;
if (sc->sc_callback->ucom_pre_param) {
/* Let the lower layer verify the parameters */
error = (sc->sc_callback->ucom_pre_param) (sc, t);
if (error) {
DPRINTF("callback error = %d\n", error);
goto done;
}
}
/* Disable transfers */
sc->sc_flag &= ~UCOM_FLAG_GP_DATA;
/* Queue baud rate programming command first */
ucom_queue_command(sc, ucom_cfg_param, t,
&sc->sc_param_task[0].hdr,
&sc->sc_param_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);
if (t->c_cflag & CRTS_IFLOW) {
sc->sc_flag |= UCOM_FLAG_RTS_IFLOW;
} else if (sc->sc_flag & UCOM_FLAG_RTS_IFLOW) {
sc->sc_flag &= ~UCOM_FLAG_RTS_IFLOW;
ucom_modem(tp, SER_RTS, 0);
}
done:
if (error) {
if (opened) {
ucom_close(tp);
}
}
return (error);
}
static void
ucom_cfg_status_change(struct usb_proc_msg *_task)
{
struct ucom_cfg_task *task =
(struct ucom_cfg_task *)_task;
struct ucom_softc *sc = task->sc;
struct tty *tp;
uint8_t new_msr;
uint8_t new_lsr;
uint8_t msr_delta;
uint8_t lsr_delta;
tp = sc->sc_tty;
UCOM_MTX_ASSERT(sc, MA_OWNED);
if (!(sc->sc_flag & UCOM_FLAG_LL_READY)) {
return;
}
if (sc->sc_callback->ucom_cfg_get_status == NULL) {
return;
}
/* get status */
new_msr = 0;
new_lsr = 0;
(sc->sc_callback->ucom_cfg_get_status) (sc, &new_lsr, &new_msr);
if (!(sc->sc_flag & UCOM_FLAG_HL_READY)) {
/* TTY device closed */
return;
}
msr_delta = (sc->sc_msr ^ new_msr);
lsr_delta = (sc->sc_lsr ^ new_lsr);
sc->sc_msr = new_msr;
sc->sc_lsr = new_lsr;
/*
* Time pulse counting support. Note that both CTS and DCD are
* active-low signals. The status bit is high to indicate that
* the signal on the line is low, which corresponds to a PPS
* clear event.
*/
switch(ucom_pps_mode) {
case 1:
if ((sc->sc_pps.ppsparam.mode & PPS_CAPTUREBOTH) &&
(msr_delta & SER_CTS)) {
pps_capture(&sc->sc_pps);
pps_event(&sc->sc_pps, (sc->sc_msr & SER_CTS) ?
PPS_CAPTURECLEAR : PPS_CAPTUREASSERT);
}
break;
case 2:
if ((sc->sc_pps.ppsparam.mode & PPS_CAPTUREBOTH) &&
(msr_delta & SER_DCD)) {
pps_capture(&sc->sc_pps);
pps_event(&sc->sc_pps, (sc->sc_msr & SER_DCD) ?
PPS_CAPTURECLEAR : PPS_CAPTUREASSERT);
}
break;
default:
break;
}
if (msr_delta & SER_DCD) {
int onoff = (sc->sc_msr & SER_DCD) ? 1 : 0;
DPRINTF("DCD changed to %d\n", onoff);
ttydisc_modem(tp, onoff);
}
if ((lsr_delta & ULSR_BI) && (sc->sc_lsr & ULSR_BI)) {
DPRINTF("BREAK detected\n");
ttydisc_rint(tp, 0, TRE_BREAK);
ttydisc_rint_done(tp);
}
if ((lsr_delta & ULSR_FE) && (sc->sc_lsr & ULSR_FE)) {
DPRINTF("Frame error detected\n");
ttydisc_rint(tp, 0, TRE_FRAMING);
ttydisc_rint_done(tp);
}
if ((lsr_delta & ULSR_PE) && (sc->sc_lsr & ULSR_PE)) {
DPRINTF("Parity error detected\n");
ttydisc_rint(tp, 0, TRE_PARITY);
ttydisc_rint_done(tp);
}
}
static void
ucom_cfg_status_change(struct usb_proc_msg *_task)
{
struct ucom_cfg_task *task =
(struct ucom_cfg_task *)_task;
struct ucom_softc *sc = task->sc;
struct tty *tp;
uint8_t new_msr;
uint8_t new_lsr;
uint8_t onoff;
uint8_t lsr_delta;
tp = sc->sc_tty;
UCOM_MTX_ASSERT(sc, MA_OWNED);
if (!(sc->sc_flag & UCOM_FLAG_LL_READY)) {
return;
}
if (sc->sc_callback->ucom_cfg_get_status == NULL) {
return;
}
/* get status */
new_msr = 0;
new_lsr = 0;
(sc->sc_callback->ucom_cfg_get_status) (sc, &new_lsr, &new_msr);
if (!(sc->sc_flag & UCOM_FLAG_HL_READY)) {
/* TTY device closed */
return;
}
onoff = ((sc->sc_msr ^ new_msr) & SER_DCD);
lsr_delta = (sc->sc_lsr ^ new_lsr);
sc->sc_msr = new_msr;
sc->sc_lsr = new_lsr;
if (onoff) {
onoff = (sc->sc_msr & SER_DCD) ? 1 : 0;
DPRINTF("DCD changed to %d\n", onoff);
/*
ttydisc_modem(tp, onoff);
*/
}
if ((lsr_delta & ULSR_BI) && (sc->sc_lsr & ULSR_BI)) {
DPRINTF("BREAK detected\n");
/*
ttydisc_rint(tp, 0, TRE_BREAK);
ttydisc_rint_done(tp);
*/
}
if ((lsr_delta & ULSR_FE) && (sc->sc_lsr & ULSR_FE)) {
DPRINTF("Frame error detected\n");
/*
ttydisc_rint(tp, 0, TRE_FRAMING);
ttydisc_rint_done(tp);
*/
}
if ((lsr_delta & ULSR_PE) && (sc->sc_lsr & ULSR_PE)) {
DPRINTF("Parity error detected\n");
/*
ttydisc_rint(tp, 0, TRE_PARITY);
ttydisc_rint_done(tp);
*/
}
}
/*------------------------------------------------------------------------*
* ucom_get_data
*
* Return values:
* 0: No data is available.
* Else: Data is available.
*------------------------------------------------------------------------*/
uint8_t
ucom_get_data(struct ucom_softc *sc, struct usb_page_cache *pc,
uint32_t offset, uint32_t len, uint32_t *actlen)
{
struct usb_page_search res;
struct tty *tp = sc->sc_tty;
uint32_t cnt;
uint32_t offset_orig;
UCOM_MTX_ASSERT(sc, MA_OWNED);
if (sc->sc_flag & UCOM_FLAG_CONSOLE) {
unsigned int temp;
/* get total TX length */
temp = ucom_cons_tx_high - ucom_cons_tx_low;
temp %= UCOM_CONS_BUFSIZE;
/* limit TX length */
if (temp > (UCOM_CONS_BUFSIZE - ucom_cons_tx_low))
temp = (UCOM_CONS_BUFSIZE - ucom_cons_tx_low);
if (temp > len)
temp = len;
/* copy in data */
usbd_copy_in(pc, offset, ucom_cons_tx_buf + ucom_cons_tx_low, temp);
/* update counters */
ucom_cons_tx_low += temp;
ucom_cons_tx_low %= UCOM_CONS_BUFSIZE;
/* store actual length */
*actlen = temp;
return (temp ? 1 : 0);
}
if (tty_gone(tp) ||
!(sc->sc_flag & UCOM_FLAG_GP_DATA)) {
actlen[0] = 0;
return (0); /* multiport device polling */
}
offset_orig = offset;
while (len != 0) {
usbd_get_page(pc, offset, &res);
if (res.length > len) {
res.length = len;
}
/* copy data directly into USB buffer */
cnt = ttydisc_getc(tp, res.buffer, res.length);
offset += cnt;
len -= cnt;
if (cnt < res.length) {
/* end of buffer */
break;
}
}
actlen[0] = offset - offset_orig;
DPRINTF("cnt=%d\n", actlen[0]);
if (actlen[0] == 0) {
return (0);
}
return (1);
}
static void
ucom_cfg_status_change(struct usb_proc_msg *_task)
{
struct ucom_cfg_task *task =
(struct ucom_cfg_task *)_task;
struct ucom_softc *sc = task->sc;
struct tty *tp;
int onoff;
uint8_t new_msr;
uint8_t new_lsr;
uint8_t msr_delta;
uint8_t lsr_delta;
uint8_t pps_signal;
tp = sc->sc_tty;
UCOM_MTX_ASSERT(sc, MA_OWNED);
if (!(sc->sc_flag & UCOM_FLAG_LL_READY)) {
return;
}
if (sc->sc_callback->ucom_cfg_get_status == NULL) {
return;
}
/* get status */
new_msr = 0;
new_lsr = 0;
(sc->sc_callback->ucom_cfg_get_status) (sc, &new_lsr, &new_msr);
if (!(sc->sc_flag & UCOM_FLAG_HL_READY)) {
/* TTY device closed */
return;
}
msr_delta = (sc->sc_msr ^ new_msr);
lsr_delta = (sc->sc_lsr ^ new_lsr);
sc->sc_msr = new_msr;
sc->sc_lsr = new_lsr;
/*
* Time pulse counting support.
*/
switch(ucom_pps_mode & UART_PPS_SIGNAL_MASK) {
case UART_PPS_CTS:
pps_signal = SER_CTS;
break;
case UART_PPS_DCD:
pps_signal = SER_DCD;
break;
default:
pps_signal = 0;
break;
}
if ((sc->sc_pps.ppsparam.mode & PPS_CAPTUREBOTH) &&
(msr_delta & pps_signal)) {
pps_capture(&sc->sc_pps);
onoff = (sc->sc_msr & pps_signal) ? 1 : 0;
if (ucom_pps_mode & UART_PPS_INVERT_PULSE)
onoff = !onoff;
pps_event(&sc->sc_pps, onoff ? PPS_CAPTUREASSERT :
PPS_CAPTURECLEAR);
}
if (msr_delta & SER_DCD) {
onoff = (sc->sc_msr & SER_DCD) ? 1 : 0;
DPRINTF("DCD changed to %d\n", onoff);
ttydisc_modem(tp, onoff);
}
if ((lsr_delta & ULSR_BI) && (sc->sc_lsr & ULSR_BI)) {
DPRINTF("BREAK detected\n");
ttydisc_rint(tp, 0, TRE_BREAK);
ttydisc_rint_done(tp);
}
if ((lsr_delta & ULSR_FE) && (sc->sc_lsr & ULSR_FE)) {
DPRINTF("Frame error detected\n");
ttydisc_rint(tp, 0, TRE_FRAMING);
ttydisc_rint_done(tp);
}
if ((lsr_delta & ULSR_PE) && (sc->sc_lsr & ULSR_PE)) {
DPRINTF("Parity error detected\n");
ttydisc_rint(tp, 0, TRE_PARITY);
ttydisc_rint_done(tp);
}
}
