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(struct ucom_softc *sc)
169 unit = device_get_unit(sc->sc_dev);
171 sc->sc_tty = tp = ttyalloc();
173 tp->t_oproc = ucomstart;
174 tp->t_param = ucomparam;
175 tp->t_stop = ucomstop;
176 tp->t_break = ucombreak;
177 tp->t_open = ucomopen;
178 tp->t_close = ucomclose;
179 tp->t_modem = ucommodem;
180 tp->t_ioctl = ucomioctl;
182 DPRINTF(("ucom_attach: tty_attach tp = %p\n", tp));
184 ttycreate(tp, TS_CALLOUT, "U%d", unit);
185 DPRINTF(("ucom_attach: ttycreate: ttyU%d\n", unit));
191 ucom_detach(struct ucom_softc *sc)
195 DPRINTF(("ucom_detach: sc = %p, tp = %p\n", sc, sc->sc_tty));
199 if (sc->sc_tty->t_state & TS_ISOPEN)
200 ucomclose(sc->sc_tty);
202 if (sc->sc_bulkin_pipe != NULL)
203 usbd_abort_pipe(sc->sc_bulkin_pipe);
204 if (sc->sc_bulkout_pipe != NULL)
205 usbd_abort_pipe(sc->sc_bulkout_pipe);
216 ucom_shutdown(struct ucom_softc *sc)
218 struct tty *tp = sc->sc_tty;
220 DPRINTF(("ucom_shutdown\n"));
222 * Hang up if necessary. Wait a bit, so the other side has time to
223 * notice even if we immediately open the port again.
225 if (ISSET(tp->t_cflag, HUPCL)) {
226 (void)ucommodem(tp, 0, SER_DTR);
227 (void)tsleep(sc, TTIPRI, "ucomsd", hz);
232 ucomopen(struct tty *tp, struct cdev *dev)
234 struct ucom_softc *sc;
243 DPRINTF(("%s: ucomopen: tp = %p\n", device_get_nameunit(sc->sc_dev), tp));
246 sc->sc_lsr = sc->sc_msr = sc->sc_mcr = 0;
248 (void)ucommodem(tp, SER_DTR | SER_RTS, 0);
250 /* Device specific open */
251 if (sc->sc_callback->ucom_open != NULL) {
252 error = sc->sc_callback->ucom_open(sc->sc_parent,
260 DPRINTF(("ucomopen: open pipes in = %d out = %d\n",
261 sc->sc_bulkin_no, sc->sc_bulkout_no));
263 /* Open the bulk pipes */
265 err = usbd_open_pipe(sc->sc_iface, sc->sc_bulkin_no, 0,
266 &sc->sc_bulkin_pipe);
268 printf("%s: open bulk in error (addr %d): %s\n",
269 device_get_nameunit(sc->sc_dev), sc->sc_bulkin_no,
275 err = usbd_open_pipe(sc->sc_iface, sc->sc_bulkout_no,
276 USBD_EXCLUSIVE_USE, &sc->sc_bulkout_pipe);
278 printf("%s: open bulk out error (addr %d): %s\n",
279 device_get_nameunit(sc->sc_dev), sc->sc_bulkout_no,
285 /* Allocate a request and an input buffer and start reading. */
286 sc->sc_ixfer = usbd_alloc_xfer(sc->sc_udev);
287 if (sc->sc_ixfer == NULL) {
292 sc->sc_ibuf = usbd_alloc_buffer(sc->sc_ixfer,
294 if (sc->sc_ibuf == NULL) {
299 sc->sc_oxfer = usbd_alloc_xfer(sc->sc_udev);
300 if (sc->sc_oxfer == NULL) {
305 sc->sc_obuf = usbd_alloc_buffer(sc->sc_oxfer,
308 if (sc->sc_obuf == NULL) {
313 sc->sc_state |= UCS_RXSTOP;
326 ucomclose(struct tty *tp)
328 struct ucom_softc *sc;
332 DPRINTF(("%s: ucomclose \n", device_get_nameunit(sc->sc_dev)));
336 if (sc->sc_callback->ucom_close != NULL)
337 sc->sc_callback->ucom_close(sc->sc_parent, sc->sc_portno);
341 ucomioctl(struct tty *tp, u_long cmd, void *data, int flag, struct thread *p)
343 struct ucom_softc *sc;
350 DPRINTF(("ucomioctl: cmd = 0x%08lx\n", cmd));
353 if (sc->sc_callback->ucom_ioctl != NULL)
354 error = sc->sc_callback->ucom_ioctl(sc->sc_parent,
361 ucommodem(struct tty *tp, int sigon, int sigoff)
363 struct ucom_softc *sc;
370 if (sigon == 0 && sigoff == 0) {
372 if (ISSET(mcr, SER_DTR))
374 if (ISSET(mcr, SER_RTS))
378 if (ISSET(msr, SER_CTS))
380 if (ISSET(msr, SER_DCD))
382 if (ISSET(msr, SER_DSR))
384 if (ISSET(msr, SER_RI))
390 if (ISSET(sigon, SER_DTR))
392 if (ISSET(sigoff, SER_DTR))
394 if (ISSET(sigon, SER_RTS))
396 if (ISSET(sigoff, SER_RTS))
400 onoff = ISSET(sc->sc_mcr, SER_DTR) ? 1 : 0;
403 onoff = ISSET(sc->sc_mcr, SER_RTS) ? 1 : 0;
410 ucombreak(struct tty *tp, int onoff)
412 struct ucom_softc *sc;
415 DPRINTF(("ucombreak: onoff = %d\n", onoff));
416 if (sc->sc_callback->ucom_set == NULL)
418 sc->sc_callback->ucom_set(sc->sc_parent, sc->sc_portno,
419 UCOM_SET_BREAK, onoff);
423 ucom_dtr(struct ucom_softc *sc, int onoff)
425 DPRINTF(("ucom_dtr: onoff = %d\n", onoff));
427 if (sc->sc_callback->ucom_set == NULL)
429 sc->sc_callback->ucom_set(sc->sc_parent, sc->sc_portno,
430 UCOM_SET_DTR, onoff);
434 ucom_rts(struct ucom_softc *sc, int onoff)
436 DPRINTF(("ucom_rts: onoff = %d\n", onoff));
438 if (sc->sc_callback->ucom_set == NULL)
440 sc->sc_callback->ucom_set(sc->sc_parent, sc->sc_portno,
441 UCOM_SET_RTS, onoff);
445 ucom_status_change(struct ucom_softc *sc)
447 struct tty *tp = sc->sc_tty;
451 if (sc->sc_callback->ucom_get_status == NULL) {
457 old_msr = sc->sc_msr;
458 sc->sc_callback->ucom_get_status(sc->sc_parent, sc->sc_portno,
459 &sc->sc_lsr, &sc->sc_msr);
460 if (ISSET((sc->sc_msr ^ old_msr), SER_DCD)) {
461 if (sc->sc_poll == 0)
463 onoff = ISSET(sc->sc_msr, SER_DCD) ? 1 : 0;
464 DPRINTF(("ucom_status_change: DCD changed to %d\n", onoff));
465 ttyld_modem(tp, onoff);
470 ucomparam(struct tty *tp, struct termios *t)
472 struct ucom_softc *sc;
481 DPRINTF(("ucomparam: sc = %p\n", sc));
483 /* Check requested parameters. */
484 if (t->c_ospeed < 0) {
485 DPRINTF(("ucomparam: negative ospeed\n"));
488 if (t->c_ispeed && t->c_ispeed != t->c_ospeed) {
489 DPRINTF(("ucomparam: mismatch ispeed and ospeed\n"));
494 * If there were no changes, don't do anything. This avoids dropping
495 * input and improves performance when all we did was frob things like
498 if (tp->t_ospeed == t->c_ospeed &&
499 tp->t_cflag == t->c_cflag)
502 /* And copy to tty. */
504 tp->t_ospeed = t->c_ospeed;
505 tp->t_cflag = t->c_cflag;
507 if (sc->sc_callback->ucom_param == NULL)
512 error = sc->sc_callback->ucom_param(sc->sc_parent, sc->sc_portno, t);
514 DPRINTF(("ucomparam: callback: error = %d\n", error));
520 if (t->c_cflag & CRTS_IFLOW) {
521 sc->sc_state |= UCS_RTS_IFLOW;
522 } else if (sc->sc_state & UCS_RTS_IFLOW) {
523 sc->sc_state &= ~UCS_RTS_IFLOW;
524 (void)ucommodem(tp, SER_RTS, 0);
529 uerr = ucomstartread(sc);
530 if (uerr != USBD_NORMAL_COMPLETION)
537 ucomstart(struct tty *tp)
539 struct ucom_softc *sc;
547 DPRINTF(("ucomstart: sc = %p\n", sc));
553 * If there's no sc_oxfer, then ucomclose has removed it. The buffer
554 * has just been flushed in the ttyflush() in ttyclose(). ttyflush()
555 * then calls tt_stop(). ucomstop calls ucomstart, so the right thing
556 * to do here is just abort if sc_oxfer is NULL, as everything else
557 * is cleaned up elsewhere.
559 if (sc->sc_oxfer == NULL)
564 if (tp->t_state & TS_TBLOCK) {
565 if (ISSET(sc->sc_mcr, SER_RTS) &&
566 ISSET(sc->sc_state, UCS_RTS_IFLOW)) {
567 DPRINTF(("ucomstart: clear RTS\n"));
568 (void)ucommodem(tp, 0, SER_RTS);
571 if (!ISSET(sc->sc_mcr, SER_RTS) &&
572 tp->t_rawq.c_cc <= tp->t_ilowat &&
573 ISSET(sc->sc_state, UCS_RTS_IFLOW)) {
574 DPRINTF(("ucomstart: set RTS\n"));
575 (void)ucommodem(tp, SER_RTS, 0);
579 if (ISSET(tp->t_state, TS_BUSY | TS_TIMEOUT | TS_TTSTOP)) {
581 DPRINTF(("ucomstart: stopped\n"));
585 if (tp->t_outq.c_cc <= tp->t_olowat) {
586 if (ISSET(tp->t_state, TS_SO_OLOWAT)) {
587 CLR(tp->t_state, TS_SO_OLOWAT);
588 wakeup(TSA_OLOWAT(tp));
590 selwakeuppri(&tp->t_wsel, TTIPRI);
591 if (tp->t_outq.c_cc == 0) {
592 if (ISSET(tp->t_state, TS_BUSY | TS_SO_OCOMPLETE) ==
593 TS_SO_OCOMPLETE && tp->t_outq.c_cc == 0) {
594 CLR(tp->t_state, TS_SO_OCOMPLETE);
595 wakeup(TSA_OCOMPLETE(tp));
601 /* Grab the first contiguous region of buffer space. */
602 data = tp->t_outq.c_cf;
603 cbp = (struct cblock *) ((intptr_t) tp->t_outq.c_cf & ~CROUND);
604 cnt = min((char *) (cbp+1) - tp->t_outq.c_cf, tp->t_outq.c_cc);
607 DPRINTF(("ucomstart: cnt == 0\n"));
611 SET(tp->t_state, TS_BUSY);
613 if (cnt > sc->sc_obufsize) {
614 DPRINTF(("ucomstart: big buffer %d chars\n", cnt));
615 cnt = sc->sc_obufsize;
617 if (sc->sc_callback->ucom_write != NULL)
618 sc->sc_callback->ucom_write(sc->sc_parent, sc->sc_portno,
619 sc->sc_obuf, data, &cnt);
621 memcpy(sc->sc_obuf, data, cnt);
623 DPRINTF(("ucomstart: %d chars\n", cnt));
624 usbd_setup_xfer(sc->sc_oxfer, sc->sc_bulkout_pipe,
625 (usbd_private_handle)sc, sc->sc_obuf, cnt,
626 USBD_NO_COPY, USBD_NO_TIMEOUT, ucomwritecb);
627 /* What can we do on error? */
628 err = usbd_transfer(sc->sc_oxfer);
629 if (err != USBD_IN_PROGRESS)
630 printf("ucomstart: err=%s\n", usbd_errstr(err));
639 ucomstop(struct tty *tp, int flag)
641 struct ucom_softc *sc;
646 DPRINTF(("ucomstop: %d\n", flag));
648 if ((flag & FREAD) && (sc->sc_state & UCS_RXSTOP) == 0) {
649 DPRINTF(("ucomstop: read\n"));
655 DPRINTF(("ucomstop: write\n"));
657 if (ISSET(tp->t_state, TS_BUSY)) {
659 if (!ISSET(tp->t_state, TS_TTSTOP))
660 SET(tp->t_state, TS_FLUSH);
667 DPRINTF(("ucomstop: done\n"));
671 ucomwritecb(usbd_xfer_handle xfer, usbd_private_handle p, usbd_status status)
673 struct ucom_softc *sc = (struct ucom_softc *)p;
674 struct tty *tp = sc->sc_tty;
678 DPRINTF(("ucomwritecb: status = %d\n", status));
680 if (status == USBD_CANCELLED || sc->sc_dying)
683 if (status != USBD_NORMAL_COMPLETION) {
684 printf("%s: ucomwritecb: %s\n",
685 device_get_nameunit(sc->sc_dev), usbd_errstr(status));
686 if (status == USBD_STALLED)
687 usbd_clear_endpoint_stall_async(sc->sc_bulkin_pipe);
688 /* XXX we should restart after some delay. */
692 usbd_get_xfer_status(xfer, NULL, NULL, &cc, NULL);
693 DPRINTF(("ucomwritecb: cc = %d\n", cc));
694 if (cc <= sc->sc_opkthdrlen) {
695 printf("%s: sent size too small, cc = %d\n",
696 device_get_nameunit(sc->sc_dev), cc);
700 /* convert from USB bytes to tty bytes */
701 cc -= sc->sc_opkthdrlen;
704 CLR(tp->t_state, TS_BUSY);
705 if (ISSET(tp->t_state, TS_FLUSH))
706 CLR(tp->t_state, TS_FLUSH);
708 ndflush(&tp->t_outq, cc);
716 CLR(tp->t_state, TS_BUSY);
722 ucomstartread(struct ucom_softc *sc)
726 DPRINTF(("ucomstartread: start\n"));
728 if (sc->sc_bulkin_pipe == NULL || (sc->sc_state & UCS_RXSTOP) == 0)
729 return (USBD_NORMAL_COMPLETION);
730 sc->sc_state &= ~UCS_RXSTOP;
732 usbd_setup_xfer(sc->sc_ixfer, sc->sc_bulkin_pipe,
733 (usbd_private_handle)sc,
734 sc->sc_ibuf, sc->sc_ibufsize,
735 USBD_SHORT_XFER_OK | USBD_NO_COPY,
736 USBD_NO_TIMEOUT, ucomreadcb);
738 err = usbd_transfer(sc->sc_ixfer);
739 if (err && err != USBD_IN_PROGRESS) {
740 sc->sc_state |= UCS_RXSTOP;
741 DPRINTF(("ucomstartread: err = %s\n", usbd_errstr(err)));
745 return (USBD_NORMAL_COMPLETION);
749 ucomreadcb(usbd_xfer_handle xfer, usbd_private_handle p, usbd_status status)
751 struct ucom_softc *sc = (struct ucom_softc *)p;
752 struct tty *tp = sc->sc_tty;
759 DPRINTF(("ucomreadcb: status = %d\n", status));
761 if (status != USBD_NORMAL_COMPLETION) {
762 if (!(sc->sc_state & UCS_RXSTOP))
763 printf("%s: ucomreadcb: %s\n",
764 device_get_nameunit(sc->sc_dev), usbd_errstr(status));
765 sc->sc_state |= UCS_RXSTOP;
766 if (status == USBD_STALLED)
767 usbd_clear_endpoint_stall_async(sc->sc_bulkin_pipe);
768 /* XXX we should restart after some delay. */
771 sc->sc_state |= UCS_RXSTOP;
773 usbd_get_xfer_status(xfer, NULL, (void **)&cp, &cc, NULL);
774 DPRINTF(("ucomreadcb: got %d chars, tp = %p\n", cc, tp));
778 if (sc->sc_callback->ucom_read != NULL)
779 sc->sc_callback->ucom_read(sc->sc_parent, sc->sc_portno,
782 if (cc > sc->sc_ibufsize) {
783 printf("%s: invalid receive data size, %d chars\n",
784 device_get_nameunit(sc->sc_dev), cc);
791 if (tp->t_state & TS_CAN_BYPASS_L_RINT) {
792 if (tp->t_rawq.c_cc + cc > tp->t_ihiwat
793 && (sc->sc_state & UCS_RTS_IFLOW
794 || tp->t_iflag & IXOFF)
795 && !(tp->t_state & TS_TBLOCK))
797 lostcc = b_to_q((char *)cp, cc, &tp->t_rawq);
800 if (tp->t_state & TS_TTSTOP
801 && (tp->t_iflag & IXANY
802 || tp->t_cc[VSTART] == tp->t_cc[VSTOP])) {
803 tp->t_state &= ~TS_TTSTOP;
804 tp->t_lflag &= ~FLUSHO;
808 printf("%s: lost %d chars\n", device_get_nameunit(sc->sc_dev),
811 /* Give characters to tty layer. */
813 DPRINTFN(7, ("ucomreadcb: char = 0x%02x\n", *cp));
814 if (ttyld_rint(tp, *cp) == -1) {
815 /* XXX what should we do? */
816 printf("%s: lost %d chars\n",
817 device_get_nameunit(sc->sc_dev), cc);
827 err = ucomstartread(sc);
829 printf("%s: read start failed\n", device_get_nameunit(sc->sc_dev));
830 /* XXX what should we dow now? */
833 if ((sc->sc_state & UCS_RTS_IFLOW) && !ISSET(sc->sc_mcr, SER_RTS)
834 && !(tp->t_state & TS_TBLOCK))
835 ucommodem(tp, SER_RTS, 0);
839 ucom_cleanup(struct ucom_softc *sc)
841 DPRINTF(("ucom_cleanup: closing pipes\n"));
844 if (sc->sc_bulkin_pipe != NULL) {
845 sc->sc_state |= UCS_RXSTOP;
846 usbd_abort_pipe(sc->sc_bulkin_pipe);
847 usbd_close_pipe(sc->sc_bulkin_pipe);
848 sc->sc_bulkin_pipe = NULL;
850 if (sc->sc_bulkout_pipe != NULL) {
851 usbd_abort_pipe(sc->sc_bulkout_pipe);
852 usbd_close_pipe(sc->sc_bulkout_pipe);
853 sc->sc_bulkout_pipe = NULL;
855 if (sc->sc_ixfer != NULL) {
856 usbd_free_xfer(sc->sc_ixfer);
859 if (sc->sc_oxfer != NULL) {
860 usbd_free_xfer(sc->sc_oxfer);
866 ucomstopread(struct ucom_softc *sc)
870 DPRINTF(("ucomstopread: enter\n"));
872 if (!(sc->sc_state & UCS_RXSTOP)) {
873 sc->sc_state |= UCS_RXSTOP;
874 if (sc->sc_bulkin_pipe == NULL) {
875 DPRINTF(("ucomstopread: bulkin pipe NULL\n"));
878 err = usbd_abort_pipe(sc->sc_bulkin_pipe);
880 DPRINTF(("ucomstopread: err = %s\n",
885 DPRINTF(("ucomstopread: leave\n"));