/* $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 "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 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 ucom_softc *, 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 tsw_open_t ucomtty_open; static tsw_close_t ucomtty_close; static tsw_outwakeup_t ucomtty_outwakeup; static tsw_ioctl_t ucomtty_ioctl; static tsw_param_t ucomtty_param; static tsw_modem_t ucomtty_modem; static tsw_free_t ucomtty_free; static struct ttydevsw ucomtty_class = { .tsw_flags = TF_INITLOCK|TF_CALLOUT, .tsw_open = ucomtty_open, .tsw_close = ucomtty_close, .tsw_outwakeup = ucomtty_outwakeup, .tsw_ioctl = ucomtty_ioctl, .tsw_param = ucomtty_param, .tsw_modem = ucomtty_modem, .tsw_free = ucomtty_free, }; 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: case MOD_UNLOAD: return (0); default: return (EOPNOTSUPP); } } void ucom_attach_tty(struct ucom_softc *sc, char* fmt, int unit) { struct tty *tp; sc->sc_tty = tp = tty_alloc(&ucomtty_class, sc, &Giant); tty_makedev(tp, NULL, fmt, unit); } int ucom_attach(struct ucom_softc *sc) { ucom_attach_tty(sc, "U%d", device_get_unit(sc->sc_dev)); DPRINTF(("ucom_attach: ttycreate: tp = %p, %s\n", sc->sc_tty, sc->sc_tty->t_dev->si_name)); return (0); } int ucom_detach(struct ucom_softc *sc) { DPRINTF(("ucom_detach: sc = %p, tp = %p\n", sc, sc->sc_tty)); tty_lock(sc->sc_tty); sc->sc_dying = 1; 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); tty_rel_gone(sc->sc_tty); 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 (tp->t_termios.c_cflag & HUPCL) { (void)ucomtty_modem(tp, 0, SER_DTR); #if 0 (void)tsleep(sc, TTIPRI, "ucomsd", hz); #endif } } static int ucomtty_open(struct tty *tp) { struct ucom_softc *sc = tty_softc(tp); usbd_status err; int error; if (sc->sc_dying) return (ENXIO); DPRINTF(("%s: ucomtty_open: 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)ucomtty_modem(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(("ucomtty_open: 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 ucomtty_close(struct tty *tp) { struct ucom_softc *sc = tty_softc(tp); DPRINTF(("%s: ucomtty_close \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 ucomtty_ioctl(struct tty *tp, u_long cmd, caddr_t data, struct thread *p) { struct ucom_softc *sc = tty_softc(tp); int error; if (sc->sc_dying) return (EIO); DPRINTF(("ucomioctl: cmd = 0x%08lx\n", cmd)); switch (cmd) { case TIOCSBRK: ucombreak(sc, 1); return (0); case TIOCCBRK: ucombreak(sc, 0); return (0); } error = ENOIOCTL; if (sc->sc_callback->ucom_ioctl != NULL) error = sc->sc_callback->ucom_ioctl(sc->sc_parent, sc->sc_portno, cmd, data, p); return (error); } static int ucomtty_modem(struct tty *tp, int sigon, int sigoff) { struct ucom_softc *sc = tty_softc(tp); int mcr; int msr; int onoff; 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 ucom_softc *sc, int onoff) { 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)); ttydisc_modem(tp, onoff); } } static int ucomtty_param(struct tty *tp, struct termios *t) { struct ucom_softc *sc = tty_softc(tp); int error; usbd_status uerr; if (sc->sc_dying) return (EIO); DPRINTF(("ucomtty_param: sc = %p\n", sc)); /* Check requested parameters. */ if (t->c_ospeed < 0) { DPRINTF(("ucomtty_param: negative ospeed\n")); return (EINVAL); } if (t->c_ispeed && t->c_ispeed != t->c_ospeed) { DPRINTF(("ucomtty_param: mismatch ispeed and ospeed\n")); return (EINVAL); } t->c_ispeed = t->c_ospeed; 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(("ucomtty_param: callback: error = %d\n", error)); return (error); } #if 0 ttsetwater(tp); #endif 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)ucomtty_modem(tp, SER_RTS, 0); } #if 0 ttyldoptim(tp); #endif uerr = ucomstartread(sc); if (uerr != USBD_NORMAL_COMPLETION) return (EIO); return (0); } static void ucomtty_free(void *sc) { /* * Our softc gets deallocated earlier on. * XXX: we should make sure the TTY device name doesn't get * recycled before we end up here! */ } static void ucomtty_outwakeup(struct tty *tp) { struct ucom_softc *sc = tty_softc(tp); usbd_status err; size_t cnt; DPRINTF(("ucomtty_outwakeup: 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; /* XXX: hardware flow control. We should use inwakeup here. */ #if 0 if (tp->t_state & TS_TBLOCK) { if (ISSET(sc->sc_mcr, SER_RTS) && ISSET(sc->sc_state, UCS_RTS_IFLOW)) { DPRINTF(("ucomtty_outwakeup: clear RTS\n")); (void)ucomtty_modem(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(("ucomtty_outwakeup: set RTS\n")); (void)ucomtty_modem(tp, SER_RTS, 0); } } #endif if (sc->sc_state & UCS_TXBUSY) return; sc->sc_state |= UCS_TXBUSY; if (sc->sc_callback->ucom_write != NULL) cnt = sc->sc_callback->ucom_write(sc->sc_parent, sc->sc_portno, tp, sc->sc_obuf, sc->sc_obufsize); else cnt = ttydisc_getc(tp, sc->sc_obuf, sc->sc_obufsize); if (cnt == 0) { DPRINTF(("ucomtty_outwakeup: cnt == 0\n")); sc->sc_state &= ~UCS_TXBUSY; return; } sc->sc_obufactive = cnt; DPRINTF(("ucomtty_outwakeup: %zu 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("ucomtty_outwakeup: err=%s\n", usbd_errstr(err)); sc->sc_state &= ~UCS_TXBUSY; } } #if 0 static void ucomstop(struct tty *tp, int flag) { struct ucom_softc *sc = tty_softc(tp); int s; 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")); if (ISSET(tp->t_state, TS_BUSY)) { /* XXX do what? */ if (!ISSET(tp->t_state, TS_TTSTOP)) SET(tp->t_state, TS_FLUSH); } } ucomtty_outwakeup(tp); DPRINTF(("ucomstop: done\n")); } #endif 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; DPRINTF(("ucomwritecb: status = %d\n", status)); if (status == USBD_CANCELLED || sc->sc_dying) return; 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. */ return; } 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); return; } /* convert from USB bytes to tty bytes */ cc -= sc->sc_opkthdrlen; if (cc != sc->sc_obufactive) panic("Partial write of %d of %d bytes, not supported\n", cc, sc->sc_obufactive); sc->sc_state &= ~UCS_TXBUSY; #if 0 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); #endif ucomtty_outwakeup(tp); } 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); } void ucomrxchars(struct ucom_softc *sc, u_char *cp, u_int32_t cc) { struct tty *tp = sc->sc_tty; /* Give characters to tty layer. */ if (ttydisc_can_bypass(tp)) { DPRINTFN(7, ("ucomreadcb: buf = %*D\n", cc, cp, "")); cc -= ttydisc_rint_bypass(tp, cp, cc); } else { while (cc > 0) { DPRINTFN(7, ("ucomreadcb: char = 0x%02x\n", *cp)); if (ttydisc_rint(tp, *cp, 0) == -1) break; cc--; cp++; } } if (cc > 0) device_printf(sc->sc_dev, "lost %d chars\n", cc); ttydisc_rint_done(tp); } 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; (void)tp; /* Used for debugging */ 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 > 0) ucomrxchars(sc, cp, cc); 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 0 if ((sc->sc_state & UCS_RTS_IFLOW) && !ISSET(sc->sc_mcr, SER_RTS) && !(tp->t_state & TS_TBLOCK)) ucomtty_modem(tp, SER_RTS, 0); #endif } 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")); }