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); }