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_shutdown(struct ucom_softc *sc) { struct tty *tp = sc->sc_tty; DPRINTF(("ucom_shutdown\n")); /* * Hang up if necessary. Wait a bit, so the other side has time to * notice even if we immediately open the port again. */ if (ISSET(tp->t_cflag, HUPCL)) { ucom_dtr(sc, 0); (void)tsleep(sc, TTIPRI, ttclos, hz); } }
static int ucom_do_ioctl(struct ucom_softc *sc, u_long cmd, void *data, int flag, struct lwp *l) { struct tty *tp = sc->sc_tty; int error; int s; if (sc->sc_dying) return (EIO); DPRINTF(("ucomioctl: cmd=0x%08lx\n", cmd)); error = (*tp->t_linesw->l_ioctl)(tp, cmd, data, flag, l); if (error != EPASSTHROUGH) return (error); error = ttioctl(tp, cmd, data, flag, l); if (error != EPASSTHROUGH) return (error); if (sc->sc_methods->ucom_ioctl != NULL) { error = sc->sc_methods->ucom_ioctl(sc->sc_parent, sc->sc_portno, cmd, data, flag, l->l_proc); if (error != EPASSTHROUGH) 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 = kauth_authorize_device_tty(l->l_cred, KAUTH_DEVICE_TTY_PRIVSET, tp); 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 = EPASSTHROUGH; 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 ucom_do_ioctl(struct ucom_softc *sc, u_long cmd, void *data, int flag, struct lwp *l) { struct tty *tp = sc->sc_tty; int error; int s; DPRINTF(("ucomioctl: cmd=0x%08lx\n", cmd)); error = (*tp->t_linesw->l_ioctl)(tp, cmd, data, flag, l); if (error != EPASSTHROUGH) return (error); error = ttioctl(tp, cmd, data, flag, l); if (error != EPASSTHROUGH) return (error); if (sc->sc_methods->ucom_ioctl != NULL) { error = sc->sc_methods->ucom_ioctl(sc->sc_parent, sc->sc_portno, cmd, data, flag, l->l_proc); if (error != EPASSTHROUGH) 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 = kauth_authorize_device_tty(l->l_cred, KAUTH_DEVICE_TTY_PRIVSET, tp); 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; case PPS_IOC_CREATE: case PPS_IOC_DESTROY: case PPS_IOC_GETPARAMS: case PPS_IOC_SETPARAMS: case PPS_IOC_GETCAP: case PPS_IOC_FETCH: #ifdef PPS_SYNC case PPS_IOC_KCBIND: #endif mutex_spin_enter(&timecounter_lock); error = pps_ioctl(cmd, data, &sc->sc_pps_state); mutex_spin_exit(&timecounter_lock); break; default: error = EPASSTHROUGH; break; } splx(s); return (error); }
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); }
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); }