1 /* $NetBSD: ucom.c,v 1.40 2001/11/13 06:24:54 lukem Exp $ */
4 * Copyright (c) 2001-2003, 2005, 2008
5 * Shunsuke Akiyama <akiyama@jp.FreeBSD.org>.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 #include <sys/cdefs.h>
31 __FBSDID("$FreeBSD$");
34 * Copyright (c) 1998, 2000 The NetBSD Foundation, Inc.
35 * All rights reserved.
37 * This code is derived from software contributed to The NetBSD Foundation
38 * by Lennart Augustsson (lennart@augustsson.net) at
39 * Carlstedt Research & Technology.
41 * Redistribution and use in source and binary forms, with or without
42 * modification, are permitted provided that the following conditions
44 * 1. Redistributions of source code must retain the above copyright
45 * notice, this list of conditions and the following disclaimer.
46 * 2. Redistributions in binary form must reproduce the above copyright
47 * notice, this list of conditions and the following disclaimer in the
48 * documentation and/or other materials provided with the distribution.
49 * 3. All advertising materials mentioning features or use of this software
50 * must display the following acknowledgement:
51 * This product includes software developed by the NetBSD
52 * Foundation, Inc. and its contributors.
53 * 4. Neither the name of The NetBSD Foundation nor the names of its
54 * contributors may be used to endorse or promote products derived
55 * from this software without specific prior written permission.
57 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
58 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
59 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
60 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
61 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
62 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
63 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
64 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
65 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
66 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
67 * POSSIBILITY OF SUCH DAMAGE.
70 #include <sys/param.h>
71 #include <sys/systm.h>
72 #include <sys/kernel.h>
73 #include <sys/malloc.h>
74 #include <sys/module.h>
76 #include <sys/ioccom.h>
77 #include <sys/fcntl.h>
79 #include <sys/serial.h>
81 #include <sys/clist.h>
83 #include <sys/selinfo.h>
86 #include <sys/sysctl.h>
88 #include <dev/usb/usb.h>
89 #include <dev/usb/usbcdc.h>
91 #include <dev/usb/usbdi.h>
92 #include <dev/usb/usbdi_util.h>
94 #include <dev/usb/usb_quirks.h>
96 #include <dev/usb/ucomvar.h>
99 static int ucomdebug = 0;
100 SYSCTL_NODE(_hw_usb, OID_AUTO, ucom, CTLFLAG_RW, 0, "USB ucom");
101 SYSCTL_INT(_hw_usb_ucom, OID_AUTO, debug, CTLFLAG_RW,
102 &ucomdebug, 0, "ucom debug level");
103 #define DPRINTF(x) do { \
108 #define DPRINTFN(n, x) do { \
109 if (ucomdebug > (n)) \
114 #define DPRINTFN(n, x)
117 static int ucom_modevent(module_t, int, void *);
118 static void ucom_cleanup(struct ucom_softc *);
119 static int ucomparam(struct tty *, struct termios *);
120 static void ucomstart(struct tty *);
121 static void ucomstop(struct tty *, int);
122 static void ucom_shutdown(struct ucom_softc *);
123 static void ucom_dtr(struct ucom_softc *, int);
124 static void ucom_rts(struct ucom_softc *, int);
125 static void ucombreak(struct tty *, int);
126 static usbd_status ucomstartread(struct ucom_softc *);
127 static void ucomreadcb(usbd_xfer_handle, usbd_private_handle, usbd_status);
128 static void ucomwritecb(usbd_xfer_handle, usbd_private_handle, usbd_status);
129 static void ucomstopread(struct ucom_softc *);
131 static t_open_t ucomopen;
132 static t_close_t ucomclose;
133 static t_modem_t ucommodem;
134 static t_ioctl_t ucomioctl;
136 devclass_t ucom_devclass;
138 static moduledata_t ucom_mod = {
144 DECLARE_MODULE(ucom, ucom_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE);
145 MODULE_DEPEND(ucom, usb, 1, 1, 1);
146 MODULE_VERSION(ucom, UCOM_MODVER);
149 ucom_modevent(module_t mod, int type, void *data)
164 ucom_attach_tty(struct ucom_softc *sc, int flags, char* fmt, int unit)
168 sc->sc_tty = tp = ttyalloc();
170 tp->t_oproc = ucomstart;
171 tp->t_param = ucomparam;
172 tp->t_stop = ucomstop;
173 tp->t_break = ucombreak;
174 tp->t_open = ucomopen;
175 tp->t_close = ucomclose;
176 tp->t_modem = ucommodem;
177 tp->t_ioctl = ucomioctl;
179 return ttycreate(tp, flags, fmt, unit);
183 ucom_attach(struct ucom_softc *sc)
186 ucom_attach_tty(sc, TS_CALLOUT,
187 "U%d", device_get_unit(sc->sc_dev));
189 DPRINTF(("ucom_attach: ttycreate: tp = %p, %s\n",
190 sc->sc_tty, sc->sc_tty->t_dev->si_name));
196 ucom_detach(struct ucom_softc *sc)
200 DPRINTF(("ucom_detach: sc = %p, tp = %p\n", sc, sc->sc_tty));
204 if (sc->sc_tty->t_state & TS_ISOPEN)
205 ucomclose(sc->sc_tty);
207 if (sc->sc_bulkin_pipe != NULL)
208 usbd_abort_pipe(sc->sc_bulkin_pipe);
209 if (sc->sc_bulkout_pipe != NULL)
210 usbd_abort_pipe(sc->sc_bulkout_pipe);
221 ucom_shutdown(struct ucom_softc *sc)
223 struct tty *tp = sc->sc_tty;
225 DPRINTF(("ucom_shutdown\n"));
227 * Hang up if necessary. Wait a bit, so the other side has time to
228 * notice even if we immediately open the port again.
230 if (ISSET(tp->t_cflag, HUPCL)) {
231 (void)ucommodem(tp, 0, SER_DTR);
232 (void)tsleep(sc, TTIPRI, "ucomsd", hz);
237 ucomopen(struct tty *tp, struct cdev *dev)
239 struct ucom_softc *sc;
248 DPRINTF(("%s: ucomopen: tp = %p\n", device_get_nameunit(sc->sc_dev), tp));
251 sc->sc_lsr = sc->sc_msr = sc->sc_mcr = 0;
253 (void)ucommodem(tp, SER_DTR | SER_RTS, 0);
255 /* Device specific open */
256 if (sc->sc_callback->ucom_open != NULL) {
257 error = sc->sc_callback->ucom_open(sc->sc_parent,
265 DPRINTF(("ucomopen: open pipes in = %d out = %d\n",
266 sc->sc_bulkin_no, sc->sc_bulkout_no));
268 /* Open the bulk pipes */
270 err = usbd_open_pipe(sc->sc_iface, sc->sc_bulkin_no, 0,
271 &sc->sc_bulkin_pipe);
273 printf("%s: open bulk in error (addr %d): %s\n",
274 device_get_nameunit(sc->sc_dev), sc->sc_bulkin_no,
280 err = usbd_open_pipe(sc->sc_iface, sc->sc_bulkout_no,
281 USBD_EXCLUSIVE_USE, &sc->sc_bulkout_pipe);
283 printf("%s: open bulk out error (addr %d): %s\n",
284 device_get_nameunit(sc->sc_dev), sc->sc_bulkout_no,
290 /* Allocate a request and an input buffer and start reading. */
291 sc->sc_ixfer = usbd_alloc_xfer(sc->sc_udev);
292 if (sc->sc_ixfer == NULL) {
297 sc->sc_ibuf = usbd_alloc_buffer(sc->sc_ixfer,
299 if (sc->sc_ibuf == NULL) {
304 sc->sc_oxfer = usbd_alloc_xfer(sc->sc_udev);
305 if (sc->sc_oxfer == NULL) {
310 sc->sc_obuf = usbd_alloc_buffer(sc->sc_oxfer,
313 if (sc->sc_obuf == NULL) {
318 sc->sc_state |= UCS_RXSTOP;
331 ucomclose(struct tty *tp)
333 struct ucom_softc *sc;
337 DPRINTF(("%s: ucomclose \n", device_get_nameunit(sc->sc_dev)));
341 if (sc->sc_callback->ucom_close != NULL)
342 sc->sc_callback->ucom_close(sc->sc_parent, sc->sc_portno);
346 ucomioctl(struct tty *tp, u_long cmd, void *data, int flag, struct thread *p)
348 struct ucom_softc *sc;
355 DPRINTF(("ucomioctl: cmd = 0x%08lx\n", cmd));
358 if (sc->sc_callback->ucom_ioctl != NULL)
359 error = sc->sc_callback->ucom_ioctl(sc->sc_parent,
366 ucommodem(struct tty *tp, int sigon, int sigoff)
368 struct ucom_softc *sc;
375 if (sigon == 0 && sigoff == 0) {
377 if (ISSET(mcr, SER_DTR))
379 if (ISSET(mcr, SER_RTS))
383 if (ISSET(msr, SER_CTS))
385 if (ISSET(msr, SER_DCD))
387 if (ISSET(msr, SER_DSR))
389 if (ISSET(msr, SER_RI))
395 if (ISSET(sigon, SER_DTR))
397 if (ISSET(sigoff, SER_DTR))
399 if (ISSET(sigon, SER_RTS))
401 if (ISSET(sigoff, SER_RTS))
405 onoff = ISSET(sc->sc_mcr, SER_DTR) ? 1 : 0;
408 onoff = ISSET(sc->sc_mcr, SER_RTS) ? 1 : 0;
415 ucombreak(struct tty *tp, int onoff)
417 struct ucom_softc *sc;
420 DPRINTF(("ucombreak: onoff = %d\n", onoff));
421 if (sc->sc_callback->ucom_set == NULL)
423 sc->sc_callback->ucom_set(sc->sc_parent, sc->sc_portno,
424 UCOM_SET_BREAK, onoff);
428 ucom_dtr(struct ucom_softc *sc, int onoff)
430 DPRINTF(("ucom_dtr: onoff = %d\n", onoff));
432 if (sc->sc_callback->ucom_set == NULL)
434 sc->sc_callback->ucom_set(sc->sc_parent, sc->sc_portno,
435 UCOM_SET_DTR, onoff);
439 ucom_rts(struct ucom_softc *sc, int onoff)
441 DPRINTF(("ucom_rts: onoff = %d\n", onoff));
443 if (sc->sc_callback->ucom_set == NULL)
445 sc->sc_callback->ucom_set(sc->sc_parent, sc->sc_portno,
446 UCOM_SET_RTS, onoff);
450 ucom_status_change(struct ucom_softc *sc)
452 struct tty *tp = sc->sc_tty;
456 if (sc->sc_callback->ucom_get_status == NULL) {
462 old_msr = sc->sc_msr;
463 sc->sc_callback->ucom_get_status(sc->sc_parent, sc->sc_portno,
464 &sc->sc_lsr, &sc->sc_msr);
465 if (ISSET((sc->sc_msr ^ old_msr), SER_DCD)) {
466 if (sc->sc_poll == 0)
468 onoff = ISSET(sc->sc_msr, SER_DCD) ? 1 : 0;
469 DPRINTF(("ucom_status_change: DCD changed to %d\n", onoff));
470 ttyld_modem(tp, onoff);
475 ucomparam(struct tty *tp, struct termios *t)
477 struct ucom_softc *sc;
486 DPRINTF(("ucomparam: sc = %p\n", sc));
488 /* Check requested parameters. */
489 if (t->c_ospeed < 0) {
490 DPRINTF(("ucomparam: negative ospeed\n"));
493 if (t->c_ispeed && t->c_ispeed != t->c_ospeed) {
494 DPRINTF(("ucomparam: mismatch ispeed and ospeed\n"));
499 * If there were no changes, don't do anything. This avoids dropping
500 * input and improves performance when all we did was frob things like
503 if (tp->t_ospeed == t->c_ospeed &&
504 tp->t_cflag == t->c_cflag)
507 /* And copy to tty. */
509 tp->t_ospeed = t->c_ospeed;
510 tp->t_cflag = t->c_cflag;
512 if (sc->sc_callback->ucom_param == NULL)
517 error = sc->sc_callback->ucom_param(sc->sc_parent, sc->sc_portno, t);
519 DPRINTF(("ucomparam: callback: error = %d\n", error));
525 if (t->c_cflag & CRTS_IFLOW) {
526 sc->sc_state |= UCS_RTS_IFLOW;
527 } else if (sc->sc_state & UCS_RTS_IFLOW) {
528 sc->sc_state &= ~UCS_RTS_IFLOW;
529 (void)ucommodem(tp, SER_RTS, 0);
534 uerr = ucomstartread(sc);
535 if (uerr != USBD_NORMAL_COMPLETION)
542 ucomstart(struct tty *tp)
544 struct ucom_softc *sc;
552 DPRINTF(("ucomstart: sc = %p\n", sc));
558 * If there's no sc_oxfer, then ucomclose has removed it. The buffer
559 * has just been flushed in the ttyflush() in ttyclose(). ttyflush()
560 * then calls tt_stop(). ucomstop calls ucomstart, so the right thing
561 * to do here is just abort if sc_oxfer is NULL, as everything else
562 * is cleaned up elsewhere.
564 if (sc->sc_oxfer == NULL)
569 if (tp->t_state & TS_TBLOCK) {
570 if (ISSET(sc->sc_mcr, SER_RTS) &&
571 ISSET(sc->sc_state, UCS_RTS_IFLOW)) {
572 DPRINTF(("ucomstart: clear RTS\n"));
573 (void)ucommodem(tp, 0, SER_RTS);
576 if (!ISSET(sc->sc_mcr, SER_RTS) &&
577 tp->t_rawq.c_cc <= tp->t_ilowat &&
578 ISSET(sc->sc_state, UCS_RTS_IFLOW)) {
579 DPRINTF(("ucomstart: set RTS\n"));
580 (void)ucommodem(tp, SER_RTS, 0);
584 if (ISSET(tp->t_state, TS_BUSY | TS_TIMEOUT | TS_TTSTOP)) {
586 DPRINTF(("ucomstart: stopped\n"));
590 if (tp->t_outq.c_cc <= tp->t_olowat) {
591 if (ISSET(tp->t_state, TS_SO_OLOWAT)) {
592 CLR(tp->t_state, TS_SO_OLOWAT);
593 wakeup(TSA_OLOWAT(tp));
595 selwakeuppri(&tp->t_wsel, TTIPRI);
596 if (tp->t_outq.c_cc == 0) {
597 if (ISSET(tp->t_state, TS_BUSY | TS_SO_OCOMPLETE) ==
598 TS_SO_OCOMPLETE && tp->t_outq.c_cc == 0) {
599 CLR(tp->t_state, TS_SO_OCOMPLETE);
600 wakeup(TSA_OCOMPLETE(tp));
606 /* Grab the first contiguous region of buffer space. */
607 data = tp->t_outq.c_cf;
608 cbp = (struct cblock *) ((intptr_t) tp->t_outq.c_cf & ~CROUND);
609 cnt = min((char *) (cbp+1) - tp->t_outq.c_cf, tp->t_outq.c_cc);
612 DPRINTF(("ucomstart: cnt == 0\n"));
616 SET(tp->t_state, TS_BUSY);
618 if (cnt > sc->sc_obufsize) {
619 DPRINTF(("ucomstart: big buffer %d chars\n", cnt));
620 cnt = sc->sc_obufsize;
622 if (sc->sc_callback->ucom_write != NULL)
623 sc->sc_callback->ucom_write(sc->sc_parent, sc->sc_portno,
624 sc->sc_obuf, data, &cnt);
626 memcpy(sc->sc_obuf, data, cnt);
628 DPRINTF(("ucomstart: %d chars\n", cnt));
629 usbd_setup_xfer(sc->sc_oxfer, sc->sc_bulkout_pipe,
630 (usbd_private_handle)sc, sc->sc_obuf, cnt,
631 USBD_NO_COPY, USBD_NO_TIMEOUT, ucomwritecb);
632 /* What can we do on error? */
633 err = usbd_transfer(sc->sc_oxfer);
634 if (err != USBD_IN_PROGRESS)
635 printf("ucomstart: err=%s\n", usbd_errstr(err));
644 ucomstop(struct tty *tp, int flag)
646 struct ucom_softc *sc;
651 DPRINTF(("ucomstop: %d\n", flag));
653 if ((flag & FREAD) && (sc->sc_state & UCS_RXSTOP) == 0) {
654 DPRINTF(("ucomstop: read\n"));
660 DPRINTF(("ucomstop: write\n"));
662 if (ISSET(tp->t_state, TS_BUSY)) {
664 if (!ISSET(tp->t_state, TS_TTSTOP))
665 SET(tp->t_state, TS_FLUSH);
672 DPRINTF(("ucomstop: done\n"));
676 ucomwritecb(usbd_xfer_handle xfer, usbd_private_handle p, usbd_status status)
678 struct ucom_softc *sc = (struct ucom_softc *)p;
679 struct tty *tp = sc->sc_tty;
683 DPRINTF(("ucomwritecb: status = %d\n", status));
685 if (status == USBD_CANCELLED || sc->sc_dying)
688 if (status != USBD_NORMAL_COMPLETION) {
689 printf("%s: ucomwritecb: %s\n",
690 device_get_nameunit(sc->sc_dev), usbd_errstr(status));
691 if (status == USBD_STALLED)
692 usbd_clear_endpoint_stall_async(sc->sc_bulkin_pipe);
693 /* XXX we should restart after some delay. */
697 usbd_get_xfer_status(xfer, NULL, NULL, &cc, NULL);
698 DPRINTF(("ucomwritecb: cc = %d\n", cc));
699 if (cc <= sc->sc_opkthdrlen) {
700 printf("%s: sent size too small, cc = %d\n",
701 device_get_nameunit(sc->sc_dev), cc);
705 /* convert from USB bytes to tty bytes */
706 cc -= sc->sc_opkthdrlen;
709 CLR(tp->t_state, TS_BUSY);
710 if (ISSET(tp->t_state, TS_FLUSH))
711 CLR(tp->t_state, TS_FLUSH);
713 ndflush(&tp->t_outq, cc);
721 CLR(tp->t_state, TS_BUSY);
727 ucomstartread(struct ucom_softc *sc)
731 DPRINTF(("ucomstartread: start\n"));
733 if (sc->sc_bulkin_pipe == NULL || (sc->sc_state & UCS_RXSTOP) == 0)
734 return (USBD_NORMAL_COMPLETION);
735 sc->sc_state &= ~UCS_RXSTOP;
737 usbd_setup_xfer(sc->sc_ixfer, sc->sc_bulkin_pipe,
738 (usbd_private_handle)sc,
739 sc->sc_ibuf, sc->sc_ibufsize,
740 USBD_SHORT_XFER_OK | USBD_NO_COPY,
741 USBD_NO_TIMEOUT, ucomreadcb);
743 err = usbd_transfer(sc->sc_ixfer);
744 if (err && err != USBD_IN_PROGRESS) {
745 sc->sc_state |= UCS_RXSTOP;
746 DPRINTF(("ucomstartread: err = %s\n", usbd_errstr(err)));
750 return (USBD_NORMAL_COMPLETION);
754 ucomreadcb(usbd_xfer_handle xfer, usbd_private_handle p, usbd_status status)
756 struct ucom_softc *sc = (struct ucom_softc *)p;
757 struct tty *tp = sc->sc_tty;
764 DPRINTF(("ucomreadcb: status = %d\n", status));
766 if (status != USBD_NORMAL_COMPLETION) {
767 if (!(sc->sc_state & UCS_RXSTOP))
768 printf("%s: ucomreadcb: %s\n",
769 device_get_nameunit(sc->sc_dev), usbd_errstr(status));
770 sc->sc_state |= UCS_RXSTOP;
771 if (status == USBD_STALLED)
772 usbd_clear_endpoint_stall_async(sc->sc_bulkin_pipe);
773 /* XXX we should restart after some delay. */
776 sc->sc_state |= UCS_RXSTOP;
778 usbd_get_xfer_status(xfer, NULL, (void **)&cp, &cc, NULL);
779 DPRINTF(("ucomreadcb: got %d chars, tp = %p\n", cc, tp));
783 if (sc->sc_callback->ucom_read != NULL)
784 sc->sc_callback->ucom_read(sc->sc_parent, sc->sc_portno,
787 if (cc > sc->sc_ibufsize) {
788 printf("%s: invalid receive data size, %d chars\n",
789 device_get_nameunit(sc->sc_dev), cc);
796 if (tp->t_state & TS_CAN_BYPASS_L_RINT) {
797 if (tp->t_rawq.c_cc + cc > tp->t_ihiwat
798 && (sc->sc_state & UCS_RTS_IFLOW
799 || tp->t_iflag & IXOFF)
800 && !(tp->t_state & TS_TBLOCK))
802 lostcc = b_to_q((char *)cp, cc, &tp->t_rawq);
805 if (tp->t_state & TS_TTSTOP
806 && (tp->t_iflag & IXANY
807 || tp->t_cc[VSTART] == tp->t_cc[VSTOP])) {
808 tp->t_state &= ~TS_TTSTOP;
809 tp->t_lflag &= ~FLUSHO;
813 printf("%s: lost %d chars\n", device_get_nameunit(sc->sc_dev),
816 /* Give characters to tty layer. */
818 DPRINTFN(7, ("ucomreadcb: char = 0x%02x\n", *cp));
819 if (ttyld_rint(tp, *cp) == -1) {
820 /* XXX what should we do? */
821 printf("%s: lost %d chars\n",
822 device_get_nameunit(sc->sc_dev), cc);
832 err = ucomstartread(sc);
834 printf("%s: read start failed\n", device_get_nameunit(sc->sc_dev));
835 /* XXX what should we dow now? */
838 if ((sc->sc_state & UCS_RTS_IFLOW) && !ISSET(sc->sc_mcr, SER_RTS)
839 && !(tp->t_state & TS_TBLOCK))
840 ucommodem(tp, SER_RTS, 0);
844 ucom_cleanup(struct ucom_softc *sc)
846 DPRINTF(("ucom_cleanup: closing pipes\n"));
849 if (sc->sc_bulkin_pipe != NULL) {
850 sc->sc_state |= UCS_RXSTOP;
851 usbd_abort_pipe(sc->sc_bulkin_pipe);
852 usbd_close_pipe(sc->sc_bulkin_pipe);
853 sc->sc_bulkin_pipe = NULL;
855 if (sc->sc_bulkout_pipe != NULL) {
856 usbd_abort_pipe(sc->sc_bulkout_pipe);
857 usbd_close_pipe(sc->sc_bulkout_pipe);
858 sc->sc_bulkout_pipe = NULL;
860 if (sc->sc_ixfer != NULL) {
861 usbd_free_xfer(sc->sc_ixfer);
864 if (sc->sc_oxfer != NULL) {
865 usbd_free_xfer(sc->sc_oxfer);
871 ucomstopread(struct ucom_softc *sc)
875 DPRINTF(("ucomstopread: enter\n"));
877 if (!(sc->sc_state & UCS_RXSTOP)) {
878 sc->sc_state |= UCS_RXSTOP;
879 if (sc->sc_bulkin_pipe == NULL) {
880 DPRINTF(("ucomstopread: bulkin pipe NULL\n"));
883 err = usbd_abort_pipe(sc->sc_bulkin_pipe);
885 DPRINTF(("ucomstopread: err = %s\n",
890 DPRINTF(("ucomstopread: leave\n"));