Merge from vendor branch OPENSSL:
[dragonfly.git] / sys / dev / usbmisc / ucom / ucom.c
CommitLineData
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1/*
2 * $NetBSD: ucom.c,v 1.39 2001/08/16 22:31:24 augustss Exp $
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3 * $NetBSD: ucom.c,v 1.40 2001/11/13 06:24:54 lukem Exp $
4 * $FreeBSD: src/sys/dev/usb/ucom.c,v 1.35 2003/11/16 11:58:21 akiyama Exp $
fef8985e 5 * $DragonFly: src/sys/dev/usbmisc/ucom/ucom.c,v 1.20 2006/07/28 02:17:39 dillon Exp $
7e74f00e 6 */
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7/*-
8 * Copyright (c) 2001-2002, Shunsuke Akiyama <akiyama@jp.FreeBSD.org>.
9 * All rights reserved.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33/*
34 * Copyright (c) 1998, 2000 The NetBSD Foundation, Inc.
35 * All rights reserved.
36 *
37 * This code is derived from software contributed to The NetBSD Foundation
38 * by Lennart Augustsson (lennart@augustsson.net) at
39 * Carlstedt Research & Technology.
40 *
41 * Redistribution and use in source and binary forms, with or without
42 * modification, are permitted provided that the following conditions
43 * are met:
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.
56 *
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.
68 */
69
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70#include <sys/param.h>
71#include <sys/systm.h>
72#include <sys/kernel.h>
73#include <sys/malloc.h>
74#include <sys/bus.h>
75#include <sys/ioccom.h>
76#include <sys/fcntl.h>
77#include <sys/conf.h>
78#include <sys/tty.h>
79#include <sys/clist.h>
80#include <sys/file.h>
d47ac1a2 81#if defined(__FreeBSD__) && __FreeBSD_version >= 500014
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82#include <sys/selinfo.h>
83#else
84#include <sys/select.h>
85#endif
86#include <sys/proc.h>
87#include <sys/vnode.h>
88#include <sys/poll.h>
89#include <sys/sysctl.h>
4e01b467 90#include <sys/thread2.h>
984263bc 91
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92#include <bus/usb/usb.h>
93#include <bus/usb/usbcdc.h>
984263bc 94
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95#include <bus/usb/usbdi.h>
96#include <bus/usb/usbdi_util.h>
97#include <bus/usb/usbdevs.h>
98#include <bus/usb/usb_quirks.h>
984263bc 99
1f2de5d4 100#include "ucomvar.h"
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101
102#ifdef USB_DEBUG
103static int ucomdebug = 0;
104SYSCTL_NODE(_hw_usb, OID_AUTO, ucom, CTLFLAG_RW, 0, "USB ucom");
105SYSCTL_INT(_hw_usb_ucom, OID_AUTO, debug, CTLFLAG_RW,
106 &ucomdebug, 0, "ucom debug level");
107#define DPRINTF(x) do { \
108 if (ucomdebug) \
109 logprintf x; \
110 } while (0)
111
112#define DPRINTFN(n, x) do { \
113 if (ucomdebug > (n)) \
114 logprintf x; \
115 } while (0)
116#else
117#define DPRINTF(x)
118#define DPRINTFN(n, x)
119#endif
120
121Static d_open_t ucomopen;
122Static d_close_t ucomclose;
123Static d_read_t ucomread;
124Static d_write_t ucomwrite;
125Static d_ioctl_t ucomioctl;
126
127#define UCOM_CDEV_MAJOR 138
128
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129static struct dev_ops ucom_ops = {
130 { "ucom", UCOM_CDEV_MAJOR, D_TTY | D_KQFILTER },
131 .d_open = ucomopen,
132 .d_close = ucomclose,
133 .d_read = ucomread,
134 .d_write = ucomwrite,
135 .d_ioctl = ucomioctl,
136 .d_poll = ttypoll,
137 .d_kqfilter = ttykqfilter
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138};
139
140Static void ucom_cleanup(struct ucom_softc *);
141Static int ucomctl(struct ucom_softc *, int, int);
142Static int ucomparam(struct tty *, struct termios *);
143Static void ucomstart(struct tty *);
144Static void ucomstop(struct tty *, int);
145Static void ucom_shutdown(struct ucom_softc *);
146Static void ucom_dtr(struct ucom_softc *, int);
147Static void ucom_rts(struct ucom_softc *, int);
148Static void ucom_break(struct ucom_softc *, int);
149Static usbd_status ucomstartread(struct ucom_softc *);
150Static void ucomreadcb(usbd_xfer_handle, usbd_private_handle, usbd_status);
151Static void ucomwritecb(usbd_xfer_handle, usbd_private_handle, usbd_status);
152Static void ucomstopread(struct ucom_softc *);
153static void disc_optim(struct tty *, struct termios *, struct ucom_softc *);
154
155devclass_t ucom_devclass;
156
157static moduledata_t ucom_mod = {
158 "ucom",
159 NULL,
160 NULL
161};
162
163DECLARE_MODULE(ucom, ucom_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE);
164MODULE_DEPEND(ucom, usb, 1, 1, 1);
165MODULE_VERSION(ucom, UCOM_MODVER);
166
167int
168ucom_attach(struct ucom_softc *sc)
169{
170 struct tty *tp;
171 int unit;
e4c9c0c8 172 dev_t dev;
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173
174 unit = device_get_unit(sc->sc_dev);
175
176 sc->sc_tty = tp = ttymalloc(sc->sc_tty);
177 tp->t_oproc = ucomstart;
178 tp->t_param = ucomparam;
179 tp->t_stop = ucomstop;
180
181 DPRINTF(("ucom_attach: tty_attach tp = %p\n", tp));
182
183 DPRINTF(("ucom_attach: make_dev: ucom%d\n", unit));
184
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185 dev_ops_add(&ucom_ops, UCOMUNIT_MASK, unit);
186 dev = make_dev(&ucom_ops, unit | UCOM_CALLOUT_MASK,
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187 UID_UUCP, GID_DIALER, 0660,
188 "ucom%d", unit);
e4c9c0c8 189 dev->si_tty = tp;
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190
191 return (0);
192}
193
194int
195ucom_detach(struct ucom_softc *sc)
196{
197 struct tty *tp = sc->sc_tty;
e4c9c0c8 198 int unit;
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199
200 DPRINTF(("ucom_detach: sc = %p, tp = %p\n", sc, sc->sc_tty));
201
202 sc->sc_dying = 1;
203
204 if (sc->sc_bulkin_pipe != NULL)
205 usbd_abort_pipe(sc->sc_bulkin_pipe);
206 if (sc->sc_bulkout_pipe != NULL)
207 usbd_abort_pipe(sc->sc_bulkout_pipe);
208
209 if (tp != NULL) {
210 if (tp->t_state & TS_ISOPEN) {
211 device_printf(sc->sc_dev,
212 "still open, forcing close\n");
213 (*linesw[tp->t_line].l_close)(tp, 0);
214 tp->t_gen++;
215 ttyclose(tp);
216 ttwakeup(tp);
217 ttwwakeup(tp);
218 }
219 } else {
220 DPRINTF(("ucom_detach: no tty\n"));
221 return (0);
222 }
223
4e01b467 224 crit_enter();
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225 if (--sc->sc_refcnt >= 0) {
226 /* Wait for processes to go away. */
227 usb_detach_wait(USBDEV(sc->sc_dev));
228 }
4e01b467 229 crit_exit();
984263bc 230
e4c9c0c8 231 unit = device_get_unit(sc->sc_dev);
fef8985e 232 dev_ops_remove(&ucom_ops, UCOMUNIT_MASK, unit);
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233
234 return (0);
235}
236
237Static void
238ucom_shutdown(struct ucom_softc *sc)
239{
240 struct tty *tp = sc->sc_tty;
241
242 DPRINTF(("ucom_shutdown\n"));
243 /*
244 * Hang up if necessary. Wait a bit, so the other side has time to
245 * notice even if we immediately open the port again.
246 */
247 if (ISSET(tp->t_cflag, HUPCL)) {
248 (void)ucomctl(sc, TIOCM_DTR, DMBIC);
377d4740 249 (void)tsleep(sc, 0, "ucomsd", hz);
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250 }
251}
252
253Static int
fef8985e 254ucomopen(struct dev_open_args *ap)
984263bc 255{
fef8985e 256 dev_t dev = ap->a_head.a_dev;
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257 int unit = UCOMUNIT(dev);
258 struct ucom_softc *sc;
259 usbd_status err;
260 struct tty *tp;
984263bc 261 int error;
41c20dac 262
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263 USB_GET_SC_OPEN(ucom, unit, sc);
264
265 if (sc->sc_dying)
266 return (ENXIO);
267
268 tp = sc->sc_tty;
269
270 DPRINTF(("%s: ucomopen: tp = %p\n", USBDEVNAME(sc->sc_dev), tp));
271
272 if (ISSET(tp->t_state, TS_ISOPEN) &&
273 ISSET(tp->t_state, TS_XCLUDE) &&
fef8985e 274 suser_cred(ap->a_cred, 0)
dadab5e9 275 ) {
984263bc 276 return (EBUSY);
dadab5e9 277 }
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278
279 /*
280 * Do the following iff this is a first open.
281 */
a5950399 282 crit_enter();
984263bc 283 while (sc->sc_opening)
377d4740 284 tsleep(&sc->sc_opening, 0, "ucomop", 0);
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285 sc->sc_opening = 1;
286
287 if (!ISSET(tp->t_state, TS_ISOPEN)) {
288 struct termios t;
289
290 sc->sc_poll = 0;
291 sc->sc_lsr = sc->sc_msr = sc->sc_mcr = 0;
292
e4c9c0c8 293 tp->t_dev = reference_dev(dev);
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294
295 /*
296 * Initialize the termios status to the defaults. Add in the
297 * sticky bits from TIOCSFLAGS.
298 */
299 t.c_ispeed = 0;
300 t.c_ospeed = TTYDEF_SPEED;
301 t.c_cflag = TTYDEF_CFLAG;
302 /* Make sure ucomparam() will do something. */
303 tp->t_ospeed = 0;
304 (void)ucomparam(tp, &t);
305 tp->t_iflag = TTYDEF_IFLAG;
306 tp->t_oflag = TTYDEF_OFLAG;
307 tp->t_lflag = TTYDEF_LFLAG;
308 ttychars(tp);
309 ttsetwater(tp);
310
311 /*
312 * Turn on DTR. We must always do this, even if carrier is not
313 * present, because otherwise we'd have to use TIOCSDTR
314 * immediately after setting CLOCAL, which applications do not
315 * expect. We always assert DTR while the device is open
316 * unless explicitly requested to deassert it.
317 */
318 (void)ucomctl(sc, TIOCM_DTR | TIOCM_RTS, DMBIS);
319
320 /* Device specific open */
321 if (sc->sc_callback->ucom_open != NULL) {
322 error = sc->sc_callback->ucom_open(sc->sc_parent,
323 sc->sc_portno);
324 if (error) {
325 ucom_cleanup(sc);
326 sc->sc_opening = 0;
327 wakeup(&sc->sc_opening);
a5950399 328 crit_exit();
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329 return (error);
330 }
331 }
332
333 DPRINTF(("ucomopen: open pipes in = %d out = %d\n",
334 sc->sc_bulkin_no, sc->sc_bulkout_no));
335
336 /* Open the bulk pipes */
337 /* Bulk-in pipe */
338 err = usbd_open_pipe(sc->sc_iface, sc->sc_bulkin_no, 0,
339 &sc->sc_bulkin_pipe);
340 if (err) {
62ade751 341 printf("%s: open bulk in error (addr %d): %s\n",
1550dfd9 342 USBDEVNAME(sc->sc_dev), sc->sc_bulkin_no,
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343 usbd_errstr(err));
344 error = EIO;
345 goto fail_0;
346 }
347 /* Bulk-out pipe */
348 err = usbd_open_pipe(sc->sc_iface, sc->sc_bulkout_no,
349 USBD_EXCLUSIVE_USE, &sc->sc_bulkout_pipe);
350 if (err) {
62ade751 351 printf("%s: open bulk out error (addr %d): %s\n",
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352 USBDEVNAME(sc->sc_dev), sc->sc_bulkout_no,
353 usbd_errstr(err));
354 error = EIO;
355 goto fail_1;
356 }
357
358 /* Allocate a request and an input buffer and start reading. */
359 sc->sc_ixfer = usbd_alloc_xfer(sc->sc_udev);
360 if (sc->sc_ixfer == NULL) {
361 error = ENOMEM;
362 goto fail_2;
363 }
364
365 sc->sc_ibuf = usbd_alloc_buffer(sc->sc_ixfer,
366 sc->sc_ibufsizepad);
367 if (sc->sc_ibuf == NULL) {
368 error = ENOMEM;
369 goto fail_3;
370 }
371
372 sc->sc_oxfer = usbd_alloc_xfer(sc->sc_udev);
373 if (sc->sc_oxfer == NULL) {
374 error = ENOMEM;
375 goto fail_3;
376 }
377
378 sc->sc_obuf = usbd_alloc_buffer(sc->sc_oxfer,
379 sc->sc_obufsize +
380 sc->sc_opkthdrlen);
381 if (sc->sc_obuf == NULL) {
382 error = ENOMEM;
383 goto fail_4;
384 }
385
386 /*
387 * Handle initial DCD.
388 */
389 if (ISSET(sc->sc_msr, UMSR_DCD) ||
390 (minor(dev) & UCOM_CALLOUT_MASK))
391 (*linesw[tp->t_line].l_modem)(tp, 1);
392
393 ucomstartread(sc);
394 }
395
396 sc->sc_opening = 0;
397 wakeup(&sc->sc_opening);
a5950399 398 crit_exit();
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399
400 error = ttyopen(dev, tp);
401 if (error)
402 goto bad;
403
404 error = (*linesw[tp->t_line].l_open)(dev, tp);
405 if (error)
406 goto bad;
407
408 disc_optim(tp, &tp->t_termios, sc);
409
410 DPRINTF(("%s: ucomopen: success\n", USBDEVNAME(sc->sc_dev)));
411
412 sc->sc_poll = 1;
413 sc->sc_refcnt++;
414
415 return (0);
416
417fail_4:
418 usbd_free_xfer(sc->sc_oxfer);
419 sc->sc_oxfer = NULL;
420fail_3:
421 usbd_free_xfer(sc->sc_ixfer);
422 sc->sc_ixfer = NULL;
423fail_2:
424 usbd_close_pipe(sc->sc_bulkout_pipe);
425 sc->sc_bulkout_pipe = NULL;
426fail_1:
427 usbd_close_pipe(sc->sc_bulkin_pipe);
428 sc->sc_bulkin_pipe = NULL;
429fail_0:
430 sc->sc_opening = 0;
431 wakeup(&sc->sc_opening);
a5950399 432 crit_exit();
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433 return (error);
434
435bad:
436 if (!ISSET(tp->t_state, TS_ISOPEN)) {
437 /*
438 * We failed to open the device, and nobody else had it opened.
439 * Clean up the state as appropriate.
440 */
441 ucom_cleanup(sc);
442 }
443
444 DPRINTF(("%s: ucomopen: failed\n", USBDEVNAME(sc->sc_dev)));
445
446 return (error);
447}
448
449static int
fef8985e 450ucomclose(struct dev_close_args *ap)
984263bc 451{
fef8985e 452 dev_t dev = ap->a_head.a_dev;
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453 struct ucom_softc *sc;
454 struct tty *tp;
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455
456 USB_GET_SC(ucom, UCOMUNIT(dev), sc);
457
458 tp = sc->sc_tty;
459
460 DPRINTF(("%s: ucomclose: unit = %d\n",
461 USBDEVNAME(sc->sc_dev), UCOMUNIT(dev)));
462
463 if (!ISSET(tp->t_state, TS_ISOPEN))
464 goto quit;
465
a5950399 466 crit_enter();
fef8985e 467 (*linesw[tp->t_line].l_close)(tp, ap->a_fflag);
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468 disc_optim(tp, &tp->t_termios, sc);
469 ttyclose(tp);
a5950399 470 crit_exit();
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471
472 if (sc->sc_dying)
473 goto quit;
474
475 if (!ISSET(tp->t_state, TS_ISOPEN)) {
476 /*
477 * Although we got a last close, the device may still be in
478 * use; e.g. if this was the dialout node, and there are still
479 * processes waiting for carrier on the non-dialout node.
480 */
481 ucom_cleanup(sc);
482 }
483
484 if (sc->sc_callback->ucom_close != NULL)
485 sc->sc_callback->ucom_close(sc->sc_parent, sc->sc_portno);
486
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487quit:
488 if (tp->t_dev) {
489 release_dev(tp->t_dev);
490 tp->t_dev = NULL;
491 }
492
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493 if (--sc->sc_refcnt < 0)
494 usb_detach_wakeup(USBDEV(sc->sc_dev));
495
496 return (0);
497}
498
499static int
fef8985e 500ucomread(struct dev_read_args *ap)
984263bc 501{
fef8985e 502 dev_t dev = ap->a_head.a_dev;
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503 struct ucom_softc *sc;
504 struct tty *tp;
505 int error;
506
507 USB_GET_SC(ucom, UCOMUNIT(dev), sc);
508 tp = sc->sc_tty;
509
fef8985e 510 DPRINTF(("ucomread: tp = %p, flag = 0x%x\n", tp, ap->a_ioflag));
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511
512 if (sc->sc_dying)
513 return (EIO);
514
fef8985e 515 error = (*linesw[tp->t_line].l_read)(tp, ap->a_uio, ap->a_ioflag);
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516
517 DPRINTF(("ucomread: error = %d\n", error));
518
519 return (error);
520}
521
522static int
fef8985e 523ucomwrite(struct dev_write_args *ap)
984263bc 524{
fef8985e 525 dev_t dev = ap->a_head.a_dev;
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526 struct ucom_softc *sc;
527 struct tty *tp;
528 int error;
529
530 USB_GET_SC(ucom, UCOMUNIT(dev), sc);
531 tp = sc->sc_tty;
532
fef8985e 533 DPRINTF(("ucomwrite: tp = %p, flag = 0x%x\n", tp, ap->a_ioflag));
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534
535 if (sc->sc_dying)
536 return (EIO);
537
fef8985e 538 error = (*linesw[tp->t_line].l_write)(tp, ap->a_uio, ap->a_ioflag);
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539
540 DPRINTF(("ucomwrite: error = %d\n", error));
541
542 return (error);
543}
544
545static int
fef8985e 546ucomioctl(struct dev_ioctl_args *ap)
984263bc 547{
fef8985e 548 dev_t dev = ap->a_head.a_dev;
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549 struct ucom_softc *sc;
550 struct tty *tp;
551 int error;
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552 int d;
553
554 USB_GET_SC(ucom, UCOMUNIT(dev), sc);
555 tp = sc->sc_tty;
556
557 if (sc->sc_dying)
558 return (EIO);
559
fef8985e 560 DPRINTF(("ucomioctl: cmd = 0x%08lx\n", ap->a_cmd));
984263bc 561
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562 error = (*linesw[tp->t_line].l_ioctl)(tp, ap->a_cmd, ap->a_data,
563 ap->a_fflag, ap->a_cred);
62ade751 564 if (error != ENOIOCTL) {
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565 DPRINTF(("ucomioctl: l_ioctl: error = %d\n", error));
566 return (error);
567 }
568
a5950399 569 crit_enter();
62ade751 570
fef8985e 571 error = ttioctl(tp, ap->a_cmd, ap->a_data, ap->a_fflag);
984263bc 572 disc_optim(tp, &tp->t_termios, sc);
62ade751 573 if (error != ENOIOCTL) {
a5950399 574 crit_exit();
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575 DPRINTF(("ucomioctl: ttioctl: error = %d\n", error));
576 return (error);
577 }
578
579 if (sc->sc_callback->ucom_ioctl != NULL) {
580 error = sc->sc_callback->ucom_ioctl(sc->sc_parent,
581 sc->sc_portno,
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582 ap->a_cmd, ap->a_data,
583 ap->a_fflag, curthread);
a5950399
MD
584 if (error >= 0) {
585 crit_exit();
984263bc 586 return (error);
a5950399 587 }
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MD
588 }
589
590 error = 0;
591
fef8985e 592 DPRINTF(("ucomioctl: our cmd = 0x%08lx\n", ap->a_cmd));
984263bc 593
fef8985e 594 switch (ap->a_cmd) {
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595 case TIOCSBRK:
596 DPRINTF(("ucomioctl: TIOCSBRK\n"));
597 ucom_break(sc, 1);
598 break;
599 case TIOCCBRK:
600 DPRINTF(("ucomioctl: TIOCCBRK\n"));
601 ucom_break(sc, 0);
602 break;
603
604 case TIOCSDTR:
605 DPRINTF(("ucomioctl: TIOCSDTR\n"));
606 (void)ucomctl(sc, TIOCM_DTR, DMBIS);
607 break;
608 case TIOCCDTR:
609 DPRINTF(("ucomioctl: TIOCCDTR\n"));
610 (void)ucomctl(sc, TIOCM_DTR, DMBIC);
611 break;
612
613 case TIOCMSET:
fef8985e 614 d = *(int *)ap->a_data;
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615 DPRINTF(("ucomioctl: TIOCMSET, 0x%x\n", d));
616 (void)ucomctl(sc, d, DMSET);
617 break;
618 case TIOCMBIS:
fef8985e 619 d = *(int *)ap->a_data;
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620 DPRINTF(("ucomioctl: TIOCMBIS, 0x%x\n", d));
621 (void)ucomctl(sc, d, DMBIS);
622 break;
623 case TIOCMBIC:
fef8985e 624 d = *(int *)ap->a_data;
984263bc
MD
625 DPRINTF(("ucomioctl: TIOCMBIC, 0x%x\n", d));
626 (void)ucomctl(sc, d, DMBIC);
627 break;
628 case TIOCMGET:
629 d = ucomctl(sc, 0, DMGET);
630 DPRINTF(("ucomioctl: TIOCMGET, 0x%x\n", d));
fef8985e 631 *(int *)ap->a_data = d;
984263bc
MD
632 break;
633
634 default:
fef8985e 635 DPRINTF(("ucomioctl: error: our cmd = 0x%08lx\n", ap->a_cmd));
984263bc
MD
636 error = ENOTTY;
637 break;
638 }
639
a5950399 640 crit_exit();
984263bc
MD
641
642 return (error);
643}
644
645Static int
646ucomctl(struct ucom_softc *sc, int bits, int how)
647{
648 int mcr;
649 int msr;
650 int onoff;
651
652 DPRINTF(("ucomctl: bits = 0x%x, how = %d\n", bits, how));
653
654 if (how == DMGET) {
655 SET(bits, TIOCM_LE); /* always set TIOCM_LE bit */
656 DPRINTF(("ucomctl: DMGET: LE"));
657
658 mcr = sc->sc_mcr;
659 if (ISSET(mcr, UMCR_DTR)) {
660 SET(bits, TIOCM_DTR);
661 DPRINTF((" DTR"));
662 }
663 if (ISSET(mcr, UMCR_RTS)) {
664 SET(bits, TIOCM_RTS);
665 DPRINTF((" RTS"));
666 }
667
668 msr = sc->sc_msr;
669 if (ISSET(msr, UMSR_CTS)) {
670 SET(bits, TIOCM_CTS);
671 DPRINTF((" CTS"));
672 }
673 if (ISSET(msr, UMSR_DCD)) {
674 SET(bits, TIOCM_CD);
675 DPRINTF((" CD"));
676 }
677 if (ISSET(msr, UMSR_DSR)) {
678 SET(bits, TIOCM_DSR);
679 DPRINTF((" DSR"));
680 }
681 if (ISSET(msr, UMSR_RI)) {
682 SET(bits, TIOCM_RI);
683 DPRINTF((" RI"));
684 }
685
686 DPRINTF(("\n"));
687
688 return (bits);
689 }
690
691 mcr = 0;
692 if (ISSET(bits, TIOCM_DTR))
693 SET(mcr, UMCR_DTR);
694 if (ISSET(bits, TIOCM_RTS))
695 SET(mcr, UMCR_RTS);
696
697 switch (how) {
698 case DMSET:
699 sc->sc_mcr = mcr;
700 break;
701 case DMBIS:
702 sc->sc_mcr |= mcr;
703 break;
704 case DMBIC:
705 sc->sc_mcr &= ~mcr;
706 break;
707 }
708
709 onoff = ISSET(sc->sc_mcr, UMCR_DTR) ? 1 : 0;
710 ucom_dtr(sc, onoff);
711
712 onoff = ISSET(sc->sc_mcr, UMCR_RTS) ? 1 : 0;
713 ucom_rts(sc, onoff);
714
715 return (0);
716}
717
718Static void
719ucom_break(struct ucom_softc *sc, int onoff)
720{
721 DPRINTF(("ucom_break: onoff = %d\n", onoff));
722
723 if (sc->sc_callback->ucom_set == NULL)
724 return;
725 sc->sc_callback->ucom_set(sc->sc_parent, sc->sc_portno,
726 UCOM_SET_BREAK, onoff);
727}
728
729Static void
730ucom_dtr(struct ucom_softc *sc, int onoff)
731{
732 DPRINTF(("ucom_dtr: onoff = %d\n", onoff));
733
734 if (sc->sc_callback->ucom_set == NULL)
735 return;
1550dfd9 736 sc->sc_callback->ucom_set(sc->sc_parent, sc->sc_portno,
984263bc
MD
737 UCOM_SET_DTR, onoff);
738}
739
740Static void
741ucom_rts(struct ucom_softc *sc, int onoff)
742{
743 DPRINTF(("ucom_rts: onoff = %d\n", onoff));
744
745 if (sc->sc_callback->ucom_set == NULL)
746 return;
1550dfd9 747 sc->sc_callback->ucom_set(sc->sc_parent, sc->sc_portno,
984263bc
MD
748 UCOM_SET_RTS, onoff);
749}
750
751void
752ucom_status_change(struct ucom_softc *sc)
753{
754 struct tty *tp = sc->sc_tty;
755 u_char old_msr;
756 int onoff;
757
758 if (sc->sc_callback->ucom_get_status == NULL) {
759 sc->sc_lsr = 0;
760 sc->sc_msr = 0;
761 return;
762 }
763
764 old_msr = sc->sc_msr;
765 sc->sc_callback->ucom_get_status(sc->sc_parent, sc->sc_portno,
766 &sc->sc_lsr, &sc->sc_msr);
767 if (ISSET((sc->sc_msr ^ old_msr), UMSR_DCD)) {
768 if (sc->sc_poll == 0)
769 return;
770 onoff = ISSET(sc->sc_msr, UMSR_DCD) ? 1 : 0;
771 DPRINTF(("ucom_status_change: DCD changed to %d\n", onoff));
772 (*linesw[tp->t_line].l_modem)(tp, onoff);
773 }
774}
775
776Static int
777ucomparam(struct tty *tp, struct termios *t)
778{
779 struct ucom_softc *sc;
780 int error;
781 usbd_status uerr;
782
783 USB_GET_SC(ucom, UCOMUNIT(tp->t_dev), sc);
784
785 if (sc->sc_dying)
786 return (EIO);
787
788 DPRINTF(("ucomparam: sc = %p\n", sc));
789
790 /* Check requested parameters. */
791 if (t->c_ospeed < 0) {
792 DPRINTF(("ucomparam: negative ospeed\n"));
793 return (EINVAL);
794 }
795 if (t->c_ispeed && t->c_ispeed != t->c_ospeed) {
796 DPRINTF(("ucomparam: mismatch ispeed and ospeed\n"));
797 return (EINVAL);
798 }
799
800 /*
801 * If there were no changes, don't do anything. This avoids dropping
802 * input and improves performance when all we did was frob things like
803 * VMIN and VTIME.
804 */
805 if (tp->t_ospeed == t->c_ospeed &&
806 tp->t_cflag == t->c_cflag)
807 return (0);
808
809 /* And copy to tty. */
810 tp->t_ispeed = 0;
811 tp->t_ospeed = t->c_ospeed;
812 tp->t_cflag = t->c_cflag;
813
814 if (sc->sc_callback->ucom_param == NULL)
815 return (0);
816
817 ucomstopread(sc);
818
819 error = sc->sc_callback->ucom_param(sc->sc_parent, sc->sc_portno, t);
820 if (error) {
821 DPRINTF(("ucomparam: callback: error = %d\n", error));
822 return (error);
823 }
824
825 ttsetwater(tp);
826
827 if (t->c_cflag & CRTS_IFLOW) {
828 sc->sc_state |= UCS_RTS_IFLOW;
829 } else if (sc->sc_state & UCS_RTS_IFLOW) {
830 sc->sc_state &= ~UCS_RTS_IFLOW;
831 (void)ucomctl(sc, UMCR_RTS, DMBIS);
832 }
833
834 disc_optim(tp, t, sc);
835
836 uerr = ucomstartread(sc);
837 if (uerr != USBD_NORMAL_COMPLETION)
838 return (EIO);
839
840 return (0);
841}
842
843Static void
844ucomstart(struct tty *tp)
845{
846 struct ucom_softc *sc;
847 struct cblock *cbp;
848 usbd_status err;
984263bc
MD
849 u_char *data;
850 int cnt;
851
852 USB_GET_SC(ucom, UCOMUNIT(tp->t_dev), sc);
853 DPRINTF(("ucomstart: sc = %p\n", sc));
854
855 if (sc->sc_dying)
856 return;
857
a5950399 858 crit_enter();
984263bc
MD
859
860 if (tp->t_state & TS_TBLOCK) {
861 if (ISSET(sc->sc_mcr, UMCR_RTS) &&
862 ISSET(sc->sc_state, UCS_RTS_IFLOW)) {
863 DPRINTF(("ucomstart: clear RTS\n"));
864 (void)ucomctl(sc, UMCR_RTS, DMBIC);
865 }
866 } else {
867 if (!ISSET(sc->sc_mcr, UMCR_RTS) &&
868 tp->t_rawq.c_cc <= tp->t_ilowat &&
869 ISSET(sc->sc_state, UCS_RTS_IFLOW)) {
870 DPRINTF(("ucomstart: set RTS\n"));
871 (void)ucomctl(sc, UMCR_RTS, DMBIS);
872 }
873 }
874
875 if (ISSET(tp->t_state, TS_BUSY | TS_TIMEOUT | TS_TTSTOP)) {
876 ttwwakeup(tp);
877 DPRINTF(("ucomstart: stopped\n"));
878 goto out;
879 }
880
881 if (tp->t_outq.c_cc <= tp->t_olowat) {
882 if (ISSET(tp->t_state, TS_SO_OLOWAT)) {
883 CLR(tp->t_state, TS_SO_OLOWAT);
884 wakeup(TSA_OLOWAT(tp));
885 }
1550dfd9 886 selwakeuppri(&tp->t_wsel, TTIPRI);
984263bc
MD
887 if (tp->t_outq.c_cc == 0) {
888 if (ISSET(tp->t_state, TS_BUSY | TS_SO_OCOMPLETE) ==
889 TS_SO_OCOMPLETE && tp->t_outq.c_cc == 0) {
890 CLR(tp->t_state, TS_SO_OCOMPLETE);
891 wakeup(TSA_OCOMPLETE(tp));
892 }
893 goto out;
894 }
895 }
896
897 /* Grab the first contiguous region of buffer space. */
898 data = tp->t_outq.c_cf;
899 cbp = (struct cblock *) ((intptr_t) tp->t_outq.c_cf & ~CROUND);
900 cnt = min((char *) (cbp+1) - tp->t_outq.c_cf, tp->t_outq.c_cc);
901
902 if (cnt == 0) {
903 DPRINTF(("ucomstart: cnt == 0\n"));
904 goto out;
905 }
906
907 SET(tp->t_state, TS_BUSY);
908
909 if (cnt > sc->sc_obufsize) {
910 DPRINTF(("ucomstart: big buffer %d chars\n", cnt));
911 cnt = sc->sc_obufsize;
912 }
913 if (sc->sc_callback->ucom_write != NULL)
914 sc->sc_callback->ucom_write(sc->sc_parent, sc->sc_portno,
915 sc->sc_obuf, data, &cnt);
916 else
917 memcpy(sc->sc_obuf, data, cnt);
918
919 DPRINTF(("ucomstart: %d chars\n", cnt));
1550dfd9 920 usbd_setup_xfer(sc->sc_oxfer, sc->sc_bulkout_pipe,
984263bc
MD
921 (usbd_private_handle)sc, sc->sc_obuf, cnt,
922 USBD_NO_COPY, USBD_NO_TIMEOUT, ucomwritecb);
923 /* What can we do on error? */
924 err = usbd_transfer(sc->sc_oxfer);
925 if (err != USBD_IN_PROGRESS)
926 printf("ucomstart: err=%s\n", usbd_errstr(err));
927
928 ttwwakeup(tp);
929
930 out:
a5950399 931 crit_exit();
984263bc
MD
932}
933
934Static void
935ucomstop(struct tty *tp, int flag)
936{
937 struct ucom_softc *sc;
984263bc
MD
938
939 USB_GET_SC(ucom, UCOMUNIT(tp->t_dev), sc);
940
941 DPRINTF(("ucomstop: %d\n", flag));
942
943 if (flag & FREAD) {
6a76f45a
MD
944 /*
945 * This is just supposed to flush pending receive data,
946 * not stop the reception of data entirely!
947 */
984263bc
MD
948 DPRINTF(("ucomstop: read\n"));
949 ucomstopread(sc);
6a76f45a 950 ucomstartread(sc);
984263bc
MD
951 }
952
953 if (flag & FWRITE) {
954 DPRINTF(("ucomstop: write\n"));
a5950399 955 crit_enter();
984263bc
MD
956 if (ISSET(tp->t_state, TS_BUSY)) {
957 /* XXX do what? */
958 if (!ISSET(tp->t_state, TS_TTSTOP))
959 SET(tp->t_state, TS_FLUSH);
960 }
a5950399 961 crit_exit();
984263bc
MD
962 }
963
964 DPRINTF(("ucomstop: done\n"));
965}
966
967Static void
968ucomwritecb(usbd_xfer_handle xfer, usbd_private_handle p, usbd_status status)
969{
970 struct ucom_softc *sc = (struct ucom_softc *)p;
971 struct tty *tp = sc->sc_tty;
972 u_int32_t cc;
984263bc
MD
973
974 DPRINTF(("ucomwritecb: status = %d\n", status));
975
976 if (status == USBD_CANCELLED || sc->sc_dying)
977 goto error;
978
979 if (status != USBD_NORMAL_COMPLETION) {
980 printf("%s: ucomwritecb: %s\n",
981 USBDEVNAME(sc->sc_dev), usbd_errstr(status));
982 if (status == USBD_STALLED)
983 usbd_clear_endpoint_stall_async(sc->sc_bulkin_pipe);
6a76f45a
MD
984 /*
985 * XXX. We may need a flag to sequence ucomstopread() and
986 * ucomstartread() to handle the case where ucomstartread()
987 * is called after ucomstopread() but before the request has
988 * been properly canceled?
989 */
984263bc
MD
990 goto error;
991 }
992
993 usbd_get_xfer_status(xfer, NULL, NULL, &cc, NULL);
994 DPRINTF(("ucomwritecb: cc = %d\n", cc));
62ade751
MD
995 if (cc <= sc->sc_opkthdrlen) {
996 printf("%s: sent size too small, cc = %d\n",
997 USBDEVNAME(sc->sc_dev), cc);
998 goto error;
999 }
984263bc
MD
1000
1001 /* convert from USB bytes to tty bytes */
1002 cc -= sc->sc_opkthdrlen;
1003
a5950399 1004 crit_enter();
984263bc
MD
1005 CLR(tp->t_state, TS_BUSY);
1006 if (ISSET(tp->t_state, TS_FLUSH))
1007 CLR(tp->t_state, TS_FLUSH);
1008 else
1009 ndflush(&tp->t_outq, cc);
1010 (*linesw[tp->t_line].l_start)(tp);
a5950399 1011 crit_exit();
984263bc
MD
1012
1013 return;
1014
1015 error:
a5950399 1016 crit_enter();
984263bc 1017 CLR(tp->t_state, TS_BUSY);
a5950399 1018 crit_exit();
984263bc
MD
1019 return;
1020}
1021
1022Static usbd_status
1023ucomstartread(struct ucom_softc *sc)
1024{
1025 usbd_status err;
1026
1027 DPRINTF(("ucomstartread: start\n"));
1028
1029 sc->sc_state &= ~UCS_RXSTOP;
1030
1031 if (sc->sc_bulkin_pipe == NULL)
1032 return (USBD_NORMAL_COMPLETION);
1033
1550dfd9
MD
1034 usbd_setup_xfer(sc->sc_ixfer, sc->sc_bulkin_pipe,
1035 (usbd_private_handle)sc,
984263bc
MD
1036 sc->sc_ibuf, sc->sc_ibufsize,
1037 USBD_SHORT_XFER_OK | USBD_NO_COPY,
1038 USBD_NO_TIMEOUT, ucomreadcb);
1039
1040 err = usbd_transfer(sc->sc_ixfer);
1041 if (err != USBD_IN_PROGRESS) {
1042 DPRINTF(("ucomstartread: err = %s\n", usbd_errstr(err)));
1043 return (err);
1044 }
1045
1046 return (USBD_NORMAL_COMPLETION);
1047}
1048
1049Static void
1050ucomreadcb(usbd_xfer_handle xfer, usbd_private_handle p, usbd_status status)
1051{
1052 struct ucom_softc *sc = (struct ucom_softc *)p;
1053 struct tty *tp = sc->sc_tty;
1054 int (*rint) (int c, struct tty *tp) = linesw[tp->t_line].l_rint;
1055 usbd_status err;
1056 u_int32_t cc;
1057 u_char *cp;
1058 int lostcc;
984263bc
MD
1059
1060 DPRINTF(("ucomreadcb: status = %d\n", status));
1061
1062 if (status != USBD_NORMAL_COMPLETION) {
1063 if (!(sc->sc_state & UCS_RXSTOP))
1064 printf("%s: ucomreadcb: %s\n",
1065 USBDEVNAME(sc->sc_dev), usbd_errstr(status));
1066 if (status == USBD_STALLED)
1067 usbd_clear_endpoint_stall_async(sc->sc_bulkin_pipe);
1068 /* XXX we should restart after some delay. */
1069 return;
1070 }
1071
1072 usbd_get_xfer_status(xfer, NULL, (void **)&cp, &cc, NULL);
1073 DPRINTF(("ucomreadcb: got %d chars, tp = %p\n", cc, tp));
62ade751
MD
1074 if (cc == 0)
1075 goto resubmit;
1076
1077 if (sc->sc_callback->ucom_read != NULL) {
984263bc
MD
1078 sc->sc_callback->ucom_read(sc->sc_parent, sc->sc_portno,
1079 &cp, &cc);
62ade751
MD
1080 }
1081
1082 if (cc > sc->sc_ibufsize) {
1083 printf("%s: invalid receive data size, %d chars\n",
1084 USBDEVNAME(sc->sc_dev), cc);
1085 goto resubmit;
1086 }
1087 if (cc < 1)
1088 goto resubmit;
984263bc 1089
a5950399 1090 crit_enter();
984263bc
MD
1091 if (tp->t_state & TS_CAN_BYPASS_L_RINT) {
1092 if (tp->t_rawq.c_cc + cc > tp->t_ihiwat
1093 && (sc->sc_state & UCS_RTS_IFLOW
1094 || tp->t_iflag & IXOFF)
1095 && !(tp->t_state & TS_TBLOCK))
1096 ttyblock(tp);
1097 lostcc = b_to_q((char *)cp, cc, &tp->t_rawq);
1098 tp->t_rawcc += cc;
6a76f45a
MD
1099 if (sc->hotchar) {
1100 while (cc) {
1101 if (*cp == sc->hotchar)
1102 break;
1103 --cc;
1104 ++cp;
1105 }
1106 if (cc)
1107 setsofttty();
1108 }
984263bc
MD
1109 ttwakeup(tp);
1110 if (tp->t_state & TS_TTSTOP
1111 && (tp->t_iflag & IXANY
1112 || tp->t_cc[VSTART] == tp->t_cc[VSTOP])) {
1113 tp->t_state &= ~TS_TTSTOP;
1114 tp->t_lflag &= ~FLUSHO;
1115 ucomstart(tp);
1116 }
1117 if (lostcc > 0)
1118 printf("%s: lost %d chars\n", USBDEVNAME(sc->sc_dev),
1119 lostcc);
1120 } else {
1121 /* Give characters to tty layer. */
62ade751
MD
1122 while (cc > 0) {
1123 DPRINTFN(7, ("ucomreadcb: char = 0x%02x\n", *cp));
1124 if ((*rint)(*cp, tp) == -1) {
984263bc
MD
1125 /* XXX what should we do? */
1126 printf("%s: lost %d chars\n",
1127 USBDEVNAME(sc->sc_dev), cc);
1128 break;
1129 }
62ade751
MD
1130 cc--;
1131 cp++;
984263bc
MD
1132 }
1133 }
a5950399 1134 crit_exit();
984263bc 1135
62ade751 1136resubmit:
984263bc
MD
1137 err = ucomstartread(sc);
1138 if (err) {
1139 printf("%s: read start failed\n", USBDEVNAME(sc->sc_dev));
1140 /* XXX what should we dow now? */
1141 }
1142
1143 if ((sc->sc_state & UCS_RTS_IFLOW) && !ISSET(sc->sc_mcr, UMCR_RTS)
1144 && !(tp->t_state & TS_TBLOCK))
1145 ucomctl(sc, UMCR_RTS, DMBIS);
1146}
1147
1148Static void
1149ucom_cleanup(struct ucom_softc *sc)
1150{
1151 DPRINTF(("ucom_cleanup: closing pipes\n"));
1152
1153 ucom_shutdown(sc);
1154 if (sc->sc_bulkin_pipe != NULL) {
1155 usbd_abort_pipe(sc->sc_bulkin_pipe);
1156 usbd_close_pipe(sc->sc_bulkin_pipe);
1157 sc->sc_bulkin_pipe = NULL;
1158 }
1159 if (sc->sc_bulkout_pipe != NULL) {
1160 usbd_abort_pipe(sc->sc_bulkout_pipe);
1161 usbd_close_pipe(sc->sc_bulkout_pipe);
1162 sc->sc_bulkout_pipe = NULL;
1163 }
1164 if (sc->sc_ixfer != NULL) {
1165 usbd_free_xfer(sc->sc_ixfer);
1166 sc->sc_ixfer = NULL;
1167 }
1168 if (sc->sc_oxfer != NULL) {
1169 usbd_free_xfer(sc->sc_oxfer);
1170 sc->sc_oxfer = NULL;
1171 }
1172}
1173
1174Static void
1175ucomstopread(struct ucom_softc *sc)
1176{
1177 usbd_status err;
1178
1179 DPRINTF(("ucomstopread: enter\n"));
1180
1181 if (!(sc->sc_state & UCS_RXSTOP)) {
62ade751 1182 sc->sc_state |= UCS_RXSTOP;
984263bc
MD
1183 if (sc->sc_bulkin_pipe == NULL) {
1184 DPRINTF(("ucomstopread: bulkin pipe NULL\n"));
1185 return;
1186 }
984263bc
MD
1187 err = usbd_abort_pipe(sc->sc_bulkin_pipe);
1188 if (err) {
1189 DPRINTF(("ucomstopread: err = %s\n",
1190 usbd_errstr(err)));
1191 }
1192 }
1193
1194 DPRINTF(("ucomstopread: leave\n"));
1195}
1196
1197static void
1198disc_optim(struct tty *tp, struct termios *t, struct ucom_softc *sc)
1199{
1200 if (!(t->c_iflag & (ICRNL | IGNCR | IMAXBEL | INLCR | ISTRIP | IXON))
1201 && (!(t->c_iflag & BRKINT) || (t->c_iflag & IGNBRK))
1202 && (!(t->c_iflag & PARMRK)
1203 || (t->c_iflag & (IGNPAR | IGNBRK)) == (IGNPAR | IGNBRK))
1204 && !(t->c_lflag & (ECHO | ICANON | IEXTEN | ISIG | PENDIN))
1205 && linesw[tp->t_line].l_rint == ttyinput) {
1206 DPRINTF(("disc_optim: bypass l_rint\n"));
1207 tp->t_state |= TS_CAN_BYPASS_L_RINT;
1208 } else {
1209 DPRINTF(("disc_optim: can't bypass l_rint\n"));
1210 tp->t_state &= ~TS_CAN_BYPASS_L_RINT;
1211 }
1212 sc->hotchar = linesw[tp->t_line].l_hotchar;
1213}