/* $NetBSD: ucom.c,v 1.40 2001/11/13 06:24:54 lukem Exp $ */ /*- * Copyright (c) 2001-2003, 2005, 2008 * Shunsuke Akiyama . * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include __FBSDID("$FreeBSD$"); /*- * Copyright (c) 1998, 2000 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Lennart Augustsson (lennart@augustsson.net) at * Carlstedt Research & Technology. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the NetBSD * Foundation, Inc. and its contributors. * 4. Neither the name of The NetBSD Foundation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "usbdevs.h" #include #include #ifdef USB_DEBUG static int ucomdebug = 0; SYSCTL_NODE(_hw_usb, OID_AUTO, ucom, CTLFLAG_RW, 0, "USB ucom"); SYSCTL_INT(_hw_usb_ucom, OID_AUTO, debug, CTLFLAG_RW, &ucomdebug, 0, "ucom debug level"); #define DPRINTF(x) do { \ if (ucomdebug) \ printf x; \ } while (0) #define DPRINTFN(n, x) do { \ if (ucomdebug > (n)) \ printf x; \ } while (0) #else #define DPRINTF(x) #define DPRINTFN(n, x) #endif static int ucom_modevent(module_t, int, void *); static void ucom_cleanup(struct ucom_softc *); static int ucomparam(struct tty *, struct termios *); static void ucomstart(struct tty *); static void ucomstop(struct tty *, int); static void ucom_shutdown(struct ucom_softc *); static void ucom_dtr(struct ucom_softc *, int); static void ucom_rts(struct ucom_softc *, int); static void ucombreak(struct tty *, int); static usbd_status ucomstartread(struct ucom_softc *); static void ucomreadcb(usbd_xfer_handle, usbd_private_handle, usbd_status); static void ucomwritecb(usbd_xfer_handle, usbd_private_handle, usbd_status); static void ucomstopread(struct ucom_softc *); static t_open_t ucomopen; static t_close_t ucomclose; static t_modem_t ucommodem; static t_ioctl_t ucomioctl; devclass_t ucom_devclass; static moduledata_t ucom_mod = { "ucom", ucom_modevent, NULL }; DECLARE_MODULE(ucom, ucom_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE); MODULE_DEPEND(ucom, usb, 1, 1, 1); MODULE_VERSION(ucom, UCOM_MODVER); static int ucom_modevent(module_t mod, int type, void *data) { switch (type) { case MOD_LOAD: break; case MOD_UNLOAD: break; default: return (EOPNOTSUPP); break; } return (0); } int ucom_attach(struct ucom_softc *sc) { struct tty *tp; int unit; unit = device_get_unit(sc->sc_dev); sc->sc_tty = tp = ttyalloc(); tp->t_sc = sc; tp->t_oproc = ucomstart; tp->t_param = ucomparam; tp->t_stop = ucomstop; tp->t_break = ucombreak; tp->t_open = ucomopen; tp->t_close = ucomclose; tp->t_modem = ucommodem; tp->t_ioctl = ucomioctl; DPRINTF(("ucom_attach: tty_attach tp = %p\n", tp)); ttycreate(tp, TS_CALLOUT, "U%d", unit); DPRINTF(("ucom_attach: ttycreate: ttyU%d\n", unit)); return (0); } int ucom_detach(struct ucom_softc *sc) { int s; DPRINTF(("ucom_detach: sc = %p, tp = %p\n", sc, sc->sc_tty)); sc->sc_dying = 1; ttygone(sc->sc_tty); if (sc->sc_tty->t_state & TS_ISOPEN) ucomclose(sc->sc_tty); if (sc->sc_bulkin_pipe != NULL) usbd_abort_pipe(sc->sc_bulkin_pipe); if (sc->sc_bulkout_pipe != NULL) usbd_abort_pipe(sc->sc_bulkout_pipe); ttyfree(sc->sc_tty); s = splusb(); splx(s); return (0); } static 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)) { (void)ucommodem(tp, 0, SER_DTR); (void)tsleep(sc, TTIPRI, "ucomsd", hz); } } static int ucomopen(struct tty *tp, struct cdev *dev) { struct ucom_softc *sc; usbd_status err; int error; sc = tp->t_sc; if (sc->sc_dying) return (ENXIO); DPRINTF(("%s: ucomopen: tp = %p\n", device_get_nameunit(sc->sc_dev), tp)); sc->sc_poll = 0; sc->sc_lsr = sc->sc_msr = sc->sc_mcr = 0; (void)ucommodem(tp, SER_DTR | SER_RTS, 0); /* 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); 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", device_get_nameunit(sc->sc_dev), sc->sc_bulkin_no, usbd_errstr(err)); error = EIO; goto fail; } /* 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", device_get_nameunit(sc->sc_dev), sc->sc_bulkout_no, usbd_errstr(err)); error = EIO; goto fail; } /* 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; } sc->sc_ibuf = usbd_alloc_buffer(sc->sc_ixfer, sc->sc_ibufsizepad); if (sc->sc_ibuf == NULL) { error = ENOMEM; goto fail; } sc->sc_oxfer = usbd_alloc_xfer(sc->sc_udev); if (sc->sc_oxfer == NULL) { error = ENOMEM; goto fail; } sc->sc_obuf = usbd_alloc_buffer(sc->sc_oxfer, sc->sc_obufsize + sc->sc_opkthdrlen); if (sc->sc_obuf == NULL) { error = ENOMEM; goto fail; } sc->sc_state |= UCS_RXSTOP; ucomstartread(sc); sc->sc_poll = 1; return (0); fail: ucom_cleanup(sc); return (error); } static void ucomclose(struct tty *tp) { struct ucom_softc *sc; sc = tp->t_sc; DPRINTF(("%s: ucomclose \n", device_get_nameunit(sc->sc_dev))); ucom_cleanup(sc); if (sc->sc_callback->ucom_close != NULL) sc->sc_callback->ucom_close(sc->sc_parent, sc->sc_portno); } static int ucomioctl(struct tty *tp, u_long cmd, void *data, int flag, struct thread *p) { struct ucom_softc *sc; int error; sc = tp->t_sc;; if (sc->sc_dying) return (EIO); DPRINTF(("ucomioctl: cmd = 0x%08lx\n", cmd)); error = ENOTTY; if (sc->sc_callback->ucom_ioctl != NULL) error = sc->sc_callback->ucom_ioctl(sc->sc_parent, sc->sc_portno, cmd, data, flag, p); return (error); } static int ucommodem(struct tty *tp, int sigon, int sigoff) { struct ucom_softc *sc; int mcr; int msr; int onoff; sc = tp->t_sc; if (sigon == 0 && sigoff == 0) { mcr = sc->sc_mcr; if (ISSET(mcr, SER_DTR)) sigon |= SER_DTR; if (ISSET(mcr, SER_RTS)) sigon |= SER_RTS; msr = sc->sc_msr; if (ISSET(msr, SER_CTS)) sigon |= SER_CTS; if (ISSET(msr, SER_DCD)) sigon |= SER_DCD; if (ISSET(msr, SER_DSR)) sigon |= SER_DSR; if (ISSET(msr, SER_RI)) sigon |= SER_RI; return (sigon); } mcr = sc->sc_mcr; if (ISSET(sigon, SER_DTR)) mcr |= SER_DTR; if (ISSET(sigoff, SER_DTR)) mcr &= ~SER_DTR; if (ISSET(sigon, SER_RTS)) mcr |= SER_RTS; if (ISSET(sigoff, SER_RTS)) mcr &= ~SER_RTS; sc->sc_mcr = mcr; onoff = ISSET(sc->sc_mcr, SER_DTR) ? 1 : 0; ucom_dtr(sc, onoff); onoff = ISSET(sc->sc_mcr, SER_RTS) ? 1 : 0; ucom_rts(sc, onoff); return (0); } static void ucombreak(struct tty *tp, int onoff) { struct ucom_softc *sc; sc = tp->t_sc; DPRINTF(("ucombreak: onoff = %d\n", onoff)); if (sc->sc_callback->ucom_set == NULL) return; sc->sc_callback->ucom_set(sc->sc_parent, sc->sc_portno, UCOM_SET_BREAK, onoff); } static void ucom_dtr(struct ucom_softc *sc, int onoff) { DPRINTF(("ucom_dtr: onoff = %d\n", onoff)); if (sc->sc_callback->ucom_set == NULL) return; sc->sc_callback->ucom_set(sc->sc_parent, sc->sc_portno, UCOM_SET_DTR, onoff); } static void ucom_rts(struct ucom_softc *sc, int onoff) { DPRINTF(("ucom_rts: onoff = %d\n", onoff)); if (sc->sc_callback->ucom_set == NULL) return; sc->sc_callback->ucom_set(sc->sc_parent, sc->sc_portno, UCOM_SET_RTS, onoff); } void ucom_status_change(struct ucom_softc *sc) { struct tty *tp = sc->sc_tty; u_char old_msr; int onoff; if (sc->sc_callback->ucom_get_status == NULL) { sc->sc_lsr = 0; sc->sc_msr = 0; return; } old_msr = sc->sc_msr; sc->sc_callback->ucom_get_status(sc->sc_parent, sc->sc_portno, &sc->sc_lsr, &sc->sc_msr); if (ISSET((sc->sc_msr ^ old_msr), SER_DCD)) { if (sc->sc_poll == 0) return; onoff = ISSET(sc->sc_msr, SER_DCD) ? 1 : 0; DPRINTF(("ucom_status_change: DCD changed to %d\n", onoff)); ttyld_modem(tp, onoff); } } static int ucomparam(struct tty *tp, struct termios *t) { struct ucom_softc *sc; int error; usbd_status uerr; sc = tp->t_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)ucommodem(tp, SER_RTS, 0); } ttyldoptim(tp); uerr = ucomstartread(sc); if (uerr != USBD_NORMAL_COMPLETION) return (EIO); return (0); } static void ucomstart(struct tty *tp) { struct ucom_softc *sc; struct cblock *cbp; usbd_status err; int s; u_char *data; int cnt; sc = tp->t_sc; DPRINTF(("ucomstart: sc = %p\n", sc)); if (sc->sc_dying) return; /* * If there's no sc_oxfer, then ucomclose has removed it. The buffer * has just been flushed in the ttyflush() in ttyclose(). ttyflush() * then calls tt_stop(). ucomstop calls ucomstart, so the right thing * to do here is just abort if sc_oxfer is NULL, as everything else * is cleaned up elsewhere. */ if (sc->sc_oxfer == NULL) return; s = spltty(); if (tp->t_state & TS_TBLOCK) { if (ISSET(sc->sc_mcr, SER_RTS) && ISSET(sc->sc_state, UCS_RTS_IFLOW)) { DPRINTF(("ucomstart: clear RTS\n")); (void)ucommodem(tp, 0, SER_RTS); } } else { if (!ISSET(sc->sc_mcr, SER_RTS) && tp->t_rawq.c_cc <= tp->t_ilowat && ISSET(sc->sc_state, UCS_RTS_IFLOW)) { DPRINTF(("ucomstart: set RTS\n")); (void)ucommodem(tp, SER_RTS, 0); } } 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)); } selwakeuppri(&tp->t_wsel, TTIPRI); 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); } static void ucomstop(struct tty *tp, int flag) { struct ucom_softc *sc; int s; sc = tp->t_sc; DPRINTF(("ucomstop: %d\n", flag)); if ((flag & FREAD) && (sc->sc_state & UCS_RXSTOP) == 0) { DPRINTF(("ucomstop: read\n")); ucomstopread(sc); ucomstartread(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); } ucomstart(tp); DPRINTF(("ucomstop: done\n")); } static void ucomwritecb(usbd_xfer_handle xfer, usbd_private_handle p, usbd_status status) { struct ucom_softc *sc = (struct ucom_softc *)p; struct tty *tp = sc->sc_tty; u_int32_t cc; int s; DPRINTF(("ucomwritecb: status = %d\n", status)); if (status == USBD_CANCELLED || sc->sc_dying) goto error; if (status != USBD_NORMAL_COMPLETION) { printf("%s: ucomwritecb: %s\n", device_get_nameunit(sc->sc_dev), usbd_errstr(status)); if (status == USBD_STALLED) 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); DPRINTF(("ucomwritecb: cc = %d\n", cc)); if (cc <= sc->sc_opkthdrlen) { printf("%s: sent size too small, cc = %d\n", device_get_nameunit(sc->sc_dev), cc); goto error; } /* 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); ttyld_start(tp); splx(s); return; error: s = spltty(); CLR(tp->t_state, TS_BUSY); splx(s); return; } static usbd_status ucomstartread(struct ucom_softc *sc) { usbd_status err; DPRINTF(("ucomstartread: start\n")); if (sc->sc_bulkin_pipe == NULL || (sc->sc_state & UCS_RXSTOP) == 0) return (USBD_NORMAL_COMPLETION); sc->sc_state &= ~UCS_RXSTOP; usbd_setup_xfer(sc->sc_ixfer, sc->sc_bulkin_pipe, (usbd_private_handle)sc, sc->sc_ibuf, sc->sc_ibufsize, USBD_SHORT_XFER_OK | USBD_NO_COPY, USBD_NO_TIMEOUT, ucomreadcb); err = usbd_transfer(sc->sc_ixfer); if (err && err != USBD_IN_PROGRESS) { sc->sc_state |= UCS_RXSTOP; DPRINTF(("ucomstartread: err = %s\n", usbd_errstr(err))); return (err); } return (USBD_NORMAL_COMPLETION); } static void ucomreadcb(usbd_xfer_handle xfer, usbd_private_handle p, usbd_status status) { struct ucom_softc *sc = (struct ucom_softc *)p; struct tty *tp = sc->sc_tty; usbd_status err; u_int32_t cc; u_char *cp; int lostcc; int s; DPRINTF(("ucomreadcb: status = %d\n", status)); if (status != USBD_NORMAL_COMPLETION) { if (!(sc->sc_state & UCS_RXSTOP)) printf("%s: ucomreadcb: %s\n", device_get_nameunit(sc->sc_dev), usbd_errstr(status)); sc->sc_state |= UCS_RXSTOP; if (status == USBD_STALLED) usbd_clear_endpoint_stall_async(sc->sc_bulkin_pipe); /* XXX we should restart after some delay. */ return; } sc->sc_state |= UCS_RXSTOP; usbd_get_xfer_status(xfer, NULL, (void **)&cp, &cc, NULL); DPRINTF(("ucomreadcb: got %d chars, tp = %p\n", cc, tp)); if (cc == 0) goto resubmit; if (sc->sc_callback->ucom_read != NULL) sc->sc_callback->ucom_read(sc->sc_parent, sc->sc_portno, &cp, &cc); if (cc > sc->sc_ibufsize) { printf("%s: invalid receive data size, %d chars\n", device_get_nameunit(sc->sc_dev), cc); goto resubmit; } if (cc < 1) goto resubmit; s = spltty(); if (tp->t_state & TS_CAN_BYPASS_L_RINT) { if (tp->t_rawq.c_cc + cc > tp->t_ihiwat && (sc->sc_state & UCS_RTS_IFLOW || tp->t_iflag & IXOFF) && !(tp->t_state & TS_TBLOCK)) ttyblock(tp); lostcc = b_to_q((char *)cp, cc, &tp->t_rawq); tp->t_rawcc += cc; ttwakeup(tp); if (tp->t_state & TS_TTSTOP && (tp->t_iflag & IXANY || tp->t_cc[VSTART] == tp->t_cc[VSTOP])) { tp->t_state &= ~TS_TTSTOP; tp->t_lflag &= ~FLUSHO; ucomstart(tp); } if (lostcc > 0) printf("%s: lost %d chars\n", device_get_nameunit(sc->sc_dev), lostcc); } else { /* Give characters to tty layer. */ while (cc > 0) { DPRINTFN(7, ("ucomreadcb: char = 0x%02x\n", *cp)); if (ttyld_rint(tp, *cp) == -1) { /* XXX what should we do? */ printf("%s: lost %d chars\n", device_get_nameunit(sc->sc_dev), cc); break; } cc--; cp++; } } splx(s); resubmit: err = ucomstartread(sc); if (err) { printf("%s: read start failed\n", device_get_nameunit(sc->sc_dev)); /* XXX what should we dow now? */ } if ((sc->sc_state & UCS_RTS_IFLOW) && !ISSET(sc->sc_mcr, SER_RTS) && !(tp->t_state & TS_TBLOCK)) ucommodem(tp, SER_RTS, 0); } static void ucom_cleanup(struct ucom_softc *sc) { DPRINTF(("ucom_cleanup: closing pipes\n")); ucom_shutdown(sc); if (sc->sc_bulkin_pipe != NULL) { sc->sc_state |= UCS_RXSTOP; 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) { usbd_free_xfer(sc->sc_ixfer); sc->sc_ixfer = NULL; } if (sc->sc_oxfer != NULL) { usbd_free_xfer(sc->sc_oxfer); sc->sc_oxfer = NULL; } } static void ucomstopread(struct ucom_softc *sc) { usbd_status err; DPRINTF(("ucomstopread: enter\n")); if (!(sc->sc_state & UCS_RXSTOP)) { sc->sc_state |= UCS_RXSTOP; if (sc->sc_bulkin_pipe == NULL) { DPRINTF(("ucomstopread: bulkin pipe NULL\n")); return; } err = usbd_abort_pipe(sc->sc_bulkin_pipe); if (err) { DPRINTF(("ucomstopread: err = %s\n", usbd_errstr(err))); } } DPRINTF(("ucomstopread: leave\n")); }