DEVFS - remove dev_ops_add(), dev_ops_get(), and get_dev()
[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 $
3e997bb7 5 * $DragonFly: src/sys/dev/usbmisc/ucom/ucom.c,v 1.32 2007/11/05 19:09:43 hasso 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>
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75#include <sys/fcntl.h>
76#include <sys/conf.h>
77#include <sys/tty.h>
78#include <sys/clist.h>
79#include <sys/file.h>
984263bc 80#include <sys/select.h>
984263bc 81#include <sys/proc.h>
895c1f85 82#include <sys/priv.h>
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83#include <sys/poll.h>
84#include <sys/sysctl.h>
4e01b467 85#include <sys/thread2.h>
984263bc 86
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87#include <bus/usb/usb.h>
88#include <bus/usb/usbcdc.h>
984263bc 89
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90#include <bus/usb/usbdi.h>
91#include <bus/usb/usbdi_util.h>
1f2de5d4 92#include <bus/usb/usb_quirks.h>
984263bc 93
1f2de5d4 94#include "ucomvar.h"
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95
96#ifdef USB_DEBUG
97static int ucomdebug = 0;
98SYSCTL_NODE(_hw_usb, OID_AUTO, ucom, CTLFLAG_RW, 0, "USB ucom");
99SYSCTL_INT(_hw_usb_ucom, OID_AUTO, debug, CTLFLAG_RW,
100 &ucomdebug, 0, "ucom debug level");
101#define DPRINTF(x) do { \
102 if (ucomdebug) \
fc1ef497 103 kprintf x; \
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104 } while (0)
105
106#define DPRINTFN(n, x) do { \
107 if (ucomdebug > (n)) \
fc1ef497 108 kprintf x; \
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109 } while (0)
110#else
111#define DPRINTF(x)
112#define DPRINTFN(n, x)
113#endif
114
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115static d_open_t ucomopen;
116static d_close_t ucomclose;
117static d_read_t ucomread;
118static d_write_t ucomwrite;
119static d_ioctl_t ucomioctl;
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120
121#define UCOM_CDEV_MAJOR 138
122
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123static struct dev_ops ucom_ops = {
124 { "ucom", UCOM_CDEV_MAJOR, D_TTY | D_KQFILTER },
125 .d_open = ucomopen,
126 .d_close = ucomclose,
127 .d_read = ucomread,
128 .d_write = ucomwrite,
129 .d_ioctl = ucomioctl,
130 .d_poll = ttypoll,
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131 .d_kqfilter = ttykqfilter,
132 .d_revoke = ttyrevoke
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133};
134
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135static void ucom_cleanup(struct ucom_softc *);
136static int ucomctl(struct ucom_softc *, int, int);
137static int ucomparam(struct tty *, struct termios *);
138static void ucomstart(struct tty *);
139static void ucomstop(struct tty *, int);
140static void ucom_shutdown(struct ucom_softc *);
141static void ucom_dtr(struct ucom_softc *, int);
142static void ucom_rts(struct ucom_softc *, int);
143static void ucom_break(struct ucom_softc *, int);
144static usbd_status ucomstartread(struct ucom_softc *);
145static void ucomreadcb(usbd_xfer_handle, usbd_private_handle, usbd_status);
146static void ucomwritecb(usbd_xfer_handle, usbd_private_handle, usbd_status);
147static void ucomstopread(struct ucom_softc *);
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148static void disc_optim(struct tty *, struct termios *, struct ucom_softc *);
149
150devclass_t ucom_devclass;
151
152static moduledata_t ucom_mod = {
153 "ucom",
154 NULL,
155 NULL
156};
157
158DECLARE_MODULE(ucom, ucom_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE);
159MODULE_DEPEND(ucom, usb, 1, 1, 1);
160MODULE_VERSION(ucom, UCOM_MODVER);
161
162int
163ucom_attach(struct ucom_softc *sc)
164{
165 struct tty *tp;
166 int unit;
b13267a5 167 cdev_t dev;
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168
169 unit = device_get_unit(sc->sc_dev);
170
171 sc->sc_tty = tp = ttymalloc(sc->sc_tty);
172 tp->t_oproc = ucomstart;
173 tp->t_param = ucomparam;
174 tp->t_stop = ucomstop;
175
176 DPRINTF(("ucom_attach: tty_attach tp = %p\n", tp));
177
178 DPRINTF(("ucom_attach: make_dev: ucom%d\n", unit));
179
fef8985e 180 dev = make_dev(&ucom_ops, unit | UCOM_CALLOUT_MASK,
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181 UID_UUCP, GID_DIALER, 0660,
182 "ucom%d", unit);
e4c9c0c8 183 dev->si_tty = tp;
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184
185 return (0);
186}
187
188int
189ucom_detach(struct ucom_softc *sc)
190{
191 struct tty *tp = sc->sc_tty;
e4c9c0c8 192 int unit;
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193
194 DPRINTF(("ucom_detach: sc = %p, tp = %p\n", sc, sc->sc_tty));
195
196 sc->sc_dying = 1;
197
198 if (sc->sc_bulkin_pipe != NULL)
199 usbd_abort_pipe(sc->sc_bulkin_pipe);
200 if (sc->sc_bulkout_pipe != NULL)
201 usbd_abort_pipe(sc->sc_bulkout_pipe);
202
203 if (tp != NULL) {
204 if (tp->t_state & TS_ISOPEN) {
205 device_printf(sc->sc_dev,
206 "still open, forcing close\n");
207 (*linesw[tp->t_line].l_close)(tp, 0);
984263bc 208 ttyclose(tp);
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209 }
210 } else {
211 DPRINTF(("ucom_detach: no tty\n"));
212 return (0);
213 }
214
4e01b467 215 crit_enter();
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216 if (--sc->sc_refcnt >= 0) {
217 /* Wait for processes to go away. */
2939c544 218 usb_detach_wait(sc->sc_dev);
984263bc 219 }
4e01b467 220 crit_exit();
984263bc 221
e4c9c0c8 222 unit = device_get_unit(sc->sc_dev);
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223 kprintf("devfs: Please check that only the right ucom devices were removed!!!\n");
224 dev_ops_remove_minor(&ucom_ops, /*UCOMUNIT_MASK, */unit);
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225
226 return (0);
227}
228
6ed427ca 229static void
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230ucom_shutdown(struct ucom_softc *sc)
231{
232 struct tty *tp = sc->sc_tty;
233
234 DPRINTF(("ucom_shutdown\n"));
235 /*
236 * Hang up if necessary. Wait a bit, so the other side has time to
237 * notice even if we immediately open the port again.
238 */
239 if (ISSET(tp->t_cflag, HUPCL)) {
240 (void)ucomctl(sc, TIOCM_DTR, DMBIC);
377d4740 241 (void)tsleep(sc, 0, "ucomsd", hz);
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242 }
243}
244
6ed427ca 245static int
fef8985e 246ucomopen(struct dev_open_args *ap)
984263bc 247{
b13267a5 248 cdev_t dev = ap->a_head.a_dev;
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249 int unit = UCOMUNIT(dev);
250 struct ucom_softc *sc;
251 usbd_status err;
252 struct tty *tp;
984263bc 253 int error;
41c20dac 254
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255 sc = devclass_get_softc(ucom_devclass, unit);
256 if (sc == NULL)
257 return (ENXIO);
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258
259 if (sc->sc_dying)
260 return (ENXIO);
261
262 tp = sc->sc_tty;
263
6ed427ca 264 DPRINTF(("%s: ucomopen: tp = %p\n", device_get_nameunit(sc->sc_dev), tp));
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265
266 if (ISSET(tp->t_state, TS_ISOPEN) &&
267 ISSET(tp->t_state, TS_XCLUDE) &&
895c1f85 268 priv_check_cred(ap->a_cred, PRIV_ROOT, 0)
dadab5e9 269 ) {
984263bc 270 return (EBUSY);
dadab5e9 271 }
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272
273 /*
274 * Do the following iff this is a first open.
275 */
a5950399 276 crit_enter();
984263bc 277 while (sc->sc_opening)
377d4740 278 tsleep(&sc->sc_opening, 0, "ucomop", 0);
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279 sc->sc_opening = 1;
280
281 if (!ISSET(tp->t_state, TS_ISOPEN)) {
282 struct termios t;
283
284 sc->sc_poll = 0;
285 sc->sc_lsr = sc->sc_msr = sc->sc_mcr = 0;
286
e4c9c0c8 287 tp->t_dev = reference_dev(dev);
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288
289 /*
290 * Initialize the termios status to the defaults. Add in the
291 * sticky bits from TIOCSFLAGS.
292 */
293 t.c_ispeed = 0;
294 t.c_ospeed = TTYDEF_SPEED;
295 t.c_cflag = TTYDEF_CFLAG;
296 /* Make sure ucomparam() will do something. */
297 tp->t_ospeed = 0;
298 (void)ucomparam(tp, &t);
299 tp->t_iflag = TTYDEF_IFLAG;
300 tp->t_oflag = TTYDEF_OFLAG;
301 tp->t_lflag = TTYDEF_LFLAG;
302 ttychars(tp);
303 ttsetwater(tp);
304
305 /*
306 * Turn on DTR. We must always do this, even if carrier is not
307 * present, because otherwise we'd have to use TIOCSDTR
308 * immediately after setting CLOCAL, which applications do not
309 * expect. We always assert DTR while the device is open
310 * unless explicitly requested to deassert it.
311 */
312 (void)ucomctl(sc, TIOCM_DTR | TIOCM_RTS, DMBIS);
313
314 /* Device specific open */
315 if (sc->sc_callback->ucom_open != NULL) {
316 error = sc->sc_callback->ucom_open(sc->sc_parent,
317 sc->sc_portno);
318 if (error) {
319 ucom_cleanup(sc);
320 sc->sc_opening = 0;
321 wakeup(&sc->sc_opening);
a5950399 322 crit_exit();
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323 return (error);
324 }
325 }
326
327 DPRINTF(("ucomopen: open pipes in = %d out = %d\n",
328 sc->sc_bulkin_no, sc->sc_bulkout_no));
329
330 /* Open the bulk pipes */
331 /* Bulk-in pipe */
332 err = usbd_open_pipe(sc->sc_iface, sc->sc_bulkin_no, 0,
333 &sc->sc_bulkin_pipe);
334 if (err) {
e3869ec7 335 kprintf("%s: open bulk in error (addr %d): %s\n",
6ed427ca 336 device_get_nameunit(sc->sc_dev), sc->sc_bulkin_no,
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337 usbd_errstr(err));
338 error = EIO;
339 goto fail_0;
340 }
341 /* Bulk-out pipe */
342 err = usbd_open_pipe(sc->sc_iface, sc->sc_bulkout_no,
343 USBD_EXCLUSIVE_USE, &sc->sc_bulkout_pipe);
344 if (err) {
e3869ec7 345 kprintf("%s: open bulk out error (addr %d): %s\n",
6ed427ca 346 device_get_nameunit(sc->sc_dev), sc->sc_bulkout_no,
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347 usbd_errstr(err));
348 error = EIO;
349 goto fail_1;
350 }
351
352 /* Allocate a request and an input buffer and start reading. */
353 sc->sc_ixfer = usbd_alloc_xfer(sc->sc_udev);
354 if (sc->sc_ixfer == NULL) {
355 error = ENOMEM;
356 goto fail_2;
357 }
358
359 sc->sc_ibuf = usbd_alloc_buffer(sc->sc_ixfer,
360 sc->sc_ibufsizepad);
361 if (sc->sc_ibuf == NULL) {
362 error = ENOMEM;
363 goto fail_3;
364 }
365
366 sc->sc_oxfer = usbd_alloc_xfer(sc->sc_udev);
367 if (sc->sc_oxfer == NULL) {
368 error = ENOMEM;
369 goto fail_3;
370 }
371
372 sc->sc_obuf = usbd_alloc_buffer(sc->sc_oxfer,
373 sc->sc_obufsize +
374 sc->sc_opkthdrlen);
375 if (sc->sc_obuf == NULL) {
376 error = ENOMEM;
377 goto fail_4;
378 }
379
380 /*
381 * Handle initial DCD.
382 */
383 if (ISSET(sc->sc_msr, UMSR_DCD) ||
384 (minor(dev) & UCOM_CALLOUT_MASK))
385 (*linesw[tp->t_line].l_modem)(tp, 1);
386
387 ucomstartread(sc);
388 }
389
390 sc->sc_opening = 0;
391 wakeup(&sc->sc_opening);
a5950399 392 crit_exit();
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393
394 error = ttyopen(dev, tp);
395 if (error)
396 goto bad;
397
398 error = (*linesw[tp->t_line].l_open)(dev, tp);
399 if (error)
400 goto bad;
401
402 disc_optim(tp, &tp->t_termios, sc);
403
6ed427ca 404 DPRINTF(("%s: ucomopen: success\n", device_get_nameunit(sc->sc_dev)));
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405
406 sc->sc_poll = 1;
407 sc->sc_refcnt++;
408
409 return (0);
410
411fail_4:
412 usbd_free_xfer(sc->sc_oxfer);
413 sc->sc_oxfer = NULL;
414fail_3:
415 usbd_free_xfer(sc->sc_ixfer);
416 sc->sc_ixfer = NULL;
417fail_2:
418 usbd_close_pipe(sc->sc_bulkout_pipe);
419 sc->sc_bulkout_pipe = NULL;
420fail_1:
421 usbd_close_pipe(sc->sc_bulkin_pipe);
422 sc->sc_bulkin_pipe = NULL;
423fail_0:
424 sc->sc_opening = 0;
425 wakeup(&sc->sc_opening);
a5950399 426 crit_exit();
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427 return (error);
428
429bad:
430 if (!ISSET(tp->t_state, TS_ISOPEN)) {
431 /*
432 * We failed to open the device, and nobody else had it opened.
433 * Clean up the state as appropriate.
434 */
435 ucom_cleanup(sc);
436 }
437
6ed427ca 438 DPRINTF(("%s: ucomopen: failed\n", device_get_nameunit(sc->sc_dev)));
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439
440 return (error);
441}
442
443static int
fef8985e 444ucomclose(struct dev_close_args *ap)
984263bc 445{
b13267a5 446 cdev_t dev = ap->a_head.a_dev;
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447 struct ucom_softc *sc;
448 struct tty *tp;
984263bc 449
1e089e7e 450 sc = devclass_get_softc(ucom_devclass, UCOMUNIT(dev));
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451
452 tp = sc->sc_tty;
453
454 DPRINTF(("%s: ucomclose: unit = %d\n",
6ed427ca 455 device_get_nameunit(sc->sc_dev), UCOMUNIT(dev)));
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456
457 if (!ISSET(tp->t_state, TS_ISOPEN))
458 goto quit;
459
a5950399 460 crit_enter();
fef8985e 461 (*linesw[tp->t_line].l_close)(tp, ap->a_fflag);
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462 disc_optim(tp, &tp->t_termios, sc);
463 ttyclose(tp);
a5950399 464 crit_exit();
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465
466 if (sc->sc_dying)
467 goto quit;
468
469 if (!ISSET(tp->t_state, TS_ISOPEN)) {
470 /*
471 * Although we got a last close, the device may still be in
472 * use; e.g. if this was the dialout node, and there are still
473 * processes waiting for carrier on the non-dialout node.
474 */
475 ucom_cleanup(sc);
476 }
477
478 if (sc->sc_callback->ucom_close != NULL)
479 sc->sc_callback->ucom_close(sc->sc_parent, sc->sc_portno);
480
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481quit:
482 if (tp->t_dev) {
483 release_dev(tp->t_dev);
484 tp->t_dev = NULL;
485 }
486
984263bc 487 if (--sc->sc_refcnt < 0)
2939c544 488 usb_detach_wakeup(sc->sc_dev);
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489
490 return (0);
491}
492
493static int
fef8985e 494ucomread(struct dev_read_args *ap)
984263bc 495{
b13267a5 496 cdev_t dev = ap->a_head.a_dev;
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497 struct ucom_softc *sc;
498 struct tty *tp;
499 int error;
500
1e089e7e 501 sc = devclass_get_softc(ucom_devclass, UCOMUNIT(dev));
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502 tp = sc->sc_tty;
503
fef8985e 504 DPRINTF(("ucomread: tp = %p, flag = 0x%x\n", tp, ap->a_ioflag));
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505
506 if (sc->sc_dying)
507 return (EIO);
508
fef8985e 509 error = (*linesw[tp->t_line].l_read)(tp, ap->a_uio, ap->a_ioflag);
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510
511 DPRINTF(("ucomread: error = %d\n", error));
512
513 return (error);
514}
515
516static int
fef8985e 517ucomwrite(struct dev_write_args *ap)
984263bc 518{
b13267a5 519 cdev_t dev = ap->a_head.a_dev;
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520 struct ucom_softc *sc;
521 struct tty *tp;
522 int error;
523
1e089e7e 524 sc = devclass_get_softc(ucom_devclass, UCOMUNIT(dev));
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525 tp = sc->sc_tty;
526
fef8985e 527 DPRINTF(("ucomwrite: tp = %p, flag = 0x%x\n", tp, ap->a_ioflag));
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528
529 if (sc->sc_dying)
530 return (EIO);
531
fef8985e 532 error = (*linesw[tp->t_line].l_write)(tp, ap->a_uio, ap->a_ioflag);
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533
534 DPRINTF(("ucomwrite: error = %d\n", error));
535
536 return (error);
537}
538
539static int
fef8985e 540ucomioctl(struct dev_ioctl_args *ap)
984263bc 541{
b13267a5 542 cdev_t dev = ap->a_head.a_dev;
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543 struct ucom_softc *sc;
544 struct tty *tp;
545 int error;
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546 int d;
547
1e089e7e 548 sc = devclass_get_softc(ucom_devclass, UCOMUNIT(dev));
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549 tp = sc->sc_tty;
550
551 if (sc->sc_dying)
552 return (EIO);
553
fef8985e 554 DPRINTF(("ucomioctl: cmd = 0x%08lx\n", ap->a_cmd));
984263bc 555
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556 error = (*linesw[tp->t_line].l_ioctl)(tp, ap->a_cmd, ap->a_data,
557 ap->a_fflag, ap->a_cred);
62ade751 558 if (error != ENOIOCTL) {
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559 DPRINTF(("ucomioctl: l_ioctl: error = %d\n", error));
560 return (error);
561 }
562
a5950399 563 crit_enter();
62ade751 564
fef8985e 565 error = ttioctl(tp, ap->a_cmd, ap->a_data, ap->a_fflag);
984263bc 566 disc_optim(tp, &tp->t_termios, sc);
62ade751 567 if (error != ENOIOCTL) {
a5950399 568 crit_exit();
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569 DPRINTF(("ucomioctl: ttioctl: error = %d\n", error));
570 return (error);
571 }
572
573 if (sc->sc_callback->ucom_ioctl != NULL) {
574 error = sc->sc_callback->ucom_ioctl(sc->sc_parent,
575 sc->sc_portno,
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576 ap->a_cmd, ap->a_data,
577 ap->a_fflag, curthread);
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578 if (error >= 0) {
579 crit_exit();
984263bc 580 return (error);
a5950399 581 }
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582 }
583
584 error = 0;
585
fef8985e 586 DPRINTF(("ucomioctl: our cmd = 0x%08lx\n", ap->a_cmd));
984263bc 587
fef8985e 588 switch (ap->a_cmd) {
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589 case TIOCSBRK:
590 DPRINTF(("ucomioctl: TIOCSBRK\n"));
591 ucom_break(sc, 1);
592 break;
593 case TIOCCBRK:
594 DPRINTF(("ucomioctl: TIOCCBRK\n"));
595 ucom_break(sc, 0);
596 break;
597
598 case TIOCSDTR:
599 DPRINTF(("ucomioctl: TIOCSDTR\n"));
600 (void)ucomctl(sc, TIOCM_DTR, DMBIS);
601 break;
602 case TIOCCDTR:
603 DPRINTF(("ucomioctl: TIOCCDTR\n"));
604 (void)ucomctl(sc, TIOCM_DTR, DMBIC);
605 break;
606
607 case TIOCMSET:
fef8985e 608 d = *(int *)ap->a_data;
984263bc
MD
609 DPRINTF(("ucomioctl: TIOCMSET, 0x%x\n", d));
610 (void)ucomctl(sc, d, DMSET);
611 break;
612 case TIOCMBIS:
fef8985e 613 d = *(int *)ap->a_data;
984263bc
MD
614 DPRINTF(("ucomioctl: TIOCMBIS, 0x%x\n", d));
615 (void)ucomctl(sc, d, DMBIS);
616 break;
617 case TIOCMBIC:
fef8985e 618 d = *(int *)ap->a_data;
984263bc
MD
619 DPRINTF(("ucomioctl: TIOCMBIC, 0x%x\n", d));
620 (void)ucomctl(sc, d, DMBIC);
621 break;
622 case TIOCMGET:
623 d = ucomctl(sc, 0, DMGET);
624 DPRINTF(("ucomioctl: TIOCMGET, 0x%x\n", d));
fef8985e 625 *(int *)ap->a_data = d;
984263bc
MD
626 break;
627
628 default:
fef8985e 629 DPRINTF(("ucomioctl: error: our cmd = 0x%08lx\n", ap->a_cmd));
984263bc
MD
630 error = ENOTTY;
631 break;
632 }
633
a5950399 634 crit_exit();
984263bc
MD
635
636 return (error);
637}
638
6ed427ca 639static int
984263bc
MD
640ucomctl(struct ucom_softc *sc, int bits, int how)
641{
642 int mcr;
643 int msr;
644 int onoff;
645
646 DPRINTF(("ucomctl: bits = 0x%x, how = %d\n", bits, how));
647
648 if (how == DMGET) {
649 SET(bits, TIOCM_LE); /* always set TIOCM_LE bit */
650 DPRINTF(("ucomctl: DMGET: LE"));
651
652 mcr = sc->sc_mcr;
653 if (ISSET(mcr, UMCR_DTR)) {
654 SET(bits, TIOCM_DTR);
655 DPRINTF((" DTR"));
656 }
657 if (ISSET(mcr, UMCR_RTS)) {
658 SET(bits, TIOCM_RTS);
659 DPRINTF((" RTS"));
660 }
661
662 msr = sc->sc_msr;
663 if (ISSET(msr, UMSR_CTS)) {
664 SET(bits, TIOCM_CTS);
665 DPRINTF((" CTS"));
666 }
667 if (ISSET(msr, UMSR_DCD)) {
668 SET(bits, TIOCM_CD);
669 DPRINTF((" CD"));
670 }
671 if (ISSET(msr, UMSR_DSR)) {
672 SET(bits, TIOCM_DSR);
673 DPRINTF((" DSR"));
674 }
675 if (ISSET(msr, UMSR_RI)) {
676 SET(bits, TIOCM_RI);
677 DPRINTF((" RI"));
678 }
679
680 DPRINTF(("\n"));
681
682 return (bits);
683 }
684
685 mcr = 0;
686 if (ISSET(bits, TIOCM_DTR))
687 SET(mcr, UMCR_DTR);
688 if (ISSET(bits, TIOCM_RTS))
689 SET(mcr, UMCR_RTS);
690
691 switch (how) {
692 case DMSET:
693 sc->sc_mcr = mcr;
694 break;
695 case DMBIS:
696 sc->sc_mcr |= mcr;
697 break;
698 case DMBIC:
699 sc->sc_mcr &= ~mcr;
700 break;
701 }
702
703 onoff = ISSET(sc->sc_mcr, UMCR_DTR) ? 1 : 0;
704 ucom_dtr(sc, onoff);
705
706 onoff = ISSET(sc->sc_mcr, UMCR_RTS) ? 1 : 0;
707 ucom_rts(sc, onoff);
708
709 return (0);
710}
711
6ed427ca 712static void
984263bc
MD
713ucom_break(struct ucom_softc *sc, int onoff)
714{
715 DPRINTF(("ucom_break: onoff = %d\n", onoff));
716
717 if (sc->sc_callback->ucom_set == NULL)
718 return;
719 sc->sc_callback->ucom_set(sc->sc_parent, sc->sc_portno,
720 UCOM_SET_BREAK, onoff);
721}
722
6ed427ca 723static void
984263bc
MD
724ucom_dtr(struct ucom_softc *sc, int onoff)
725{
726 DPRINTF(("ucom_dtr: onoff = %d\n", onoff));
727
728 if (sc->sc_callback->ucom_set == NULL)
729 return;
1550dfd9 730 sc->sc_callback->ucom_set(sc->sc_parent, sc->sc_portno,
984263bc
MD
731 UCOM_SET_DTR, onoff);
732}
733
6ed427ca 734static void
984263bc
MD
735ucom_rts(struct ucom_softc *sc, int onoff)
736{
737 DPRINTF(("ucom_rts: onoff = %d\n", onoff));
738
739 if (sc->sc_callback->ucom_set == NULL)
740 return;
1550dfd9 741 sc->sc_callback->ucom_set(sc->sc_parent, sc->sc_portno,
984263bc
MD
742 UCOM_SET_RTS, onoff);
743}
744
745void
746ucom_status_change(struct ucom_softc *sc)
747{
748 struct tty *tp = sc->sc_tty;
749 u_char old_msr;
750 int onoff;
751
752 if (sc->sc_callback->ucom_get_status == NULL) {
753 sc->sc_lsr = 0;
754 sc->sc_msr = 0;
755 return;
756 }
757
758 old_msr = sc->sc_msr;
759 sc->sc_callback->ucom_get_status(sc->sc_parent, sc->sc_portno,
760 &sc->sc_lsr, &sc->sc_msr);
761 if (ISSET((sc->sc_msr ^ old_msr), UMSR_DCD)) {
762 if (sc->sc_poll == 0)
763 return;
764 onoff = ISSET(sc->sc_msr, UMSR_DCD) ? 1 : 0;
765 DPRINTF(("ucom_status_change: DCD changed to %d\n", onoff));
766 (*linesw[tp->t_line].l_modem)(tp, onoff);
767 }
768}
769
6ed427ca 770static int
984263bc
MD
771ucomparam(struct tty *tp, struct termios *t)
772{
773 struct ucom_softc *sc;
774 int error;
775 usbd_status uerr;
776
1e089e7e 777 sc = devclass_get_softc(ucom_devclass, UCOMUNIT(tp->t_dev));
984263bc
MD
778
779 if (sc->sc_dying)
780 return (EIO);
781
782 DPRINTF(("ucomparam: sc = %p\n", sc));
783
784 /* Check requested parameters. */
785 if (t->c_ospeed < 0) {
786 DPRINTF(("ucomparam: negative ospeed\n"));
787 return (EINVAL);
788 }
789 if (t->c_ispeed && t->c_ispeed != t->c_ospeed) {
790 DPRINTF(("ucomparam: mismatch ispeed and ospeed\n"));
791 return (EINVAL);
792 }
793
794 /*
795 * If there were no changes, don't do anything. This avoids dropping
796 * input and improves performance when all we did was frob things like
797 * VMIN and VTIME.
798 */
799 if (tp->t_ospeed == t->c_ospeed &&
800 tp->t_cflag == t->c_cflag)
801 return (0);
802
803 /* And copy to tty. */
804 tp->t_ispeed = 0;
805 tp->t_ospeed = t->c_ospeed;
806 tp->t_cflag = t->c_cflag;
807
808 if (sc->sc_callback->ucom_param == NULL)
809 return (0);
810
811 ucomstopread(sc);
812
813 error = sc->sc_callback->ucom_param(sc->sc_parent, sc->sc_portno, t);
814 if (error) {
815 DPRINTF(("ucomparam: callback: error = %d\n", error));
816 return (error);
817 }
818
819 ttsetwater(tp);
820
821 if (t->c_cflag & CRTS_IFLOW) {
822 sc->sc_state |= UCS_RTS_IFLOW;
823 } else if (sc->sc_state & UCS_RTS_IFLOW) {
824 sc->sc_state &= ~UCS_RTS_IFLOW;
825 (void)ucomctl(sc, UMCR_RTS, DMBIS);
826 }
827
828 disc_optim(tp, t, sc);
829
830 uerr = ucomstartread(sc);
831 if (uerr != USBD_NORMAL_COMPLETION)
832 return (EIO);
833
834 return (0);
835}
836
6ed427ca 837static void
984263bc
MD
838ucomstart(struct tty *tp)
839{
840 struct ucom_softc *sc;
841 struct cblock *cbp;
842 usbd_status err;
984263bc
MD
843 u_char *data;
844 int cnt;
845
1e089e7e 846 sc = devclass_get_softc(ucom_devclass, UCOMUNIT(tp->t_dev));
984263bc
MD
847 DPRINTF(("ucomstart: sc = %p\n", sc));
848
849 if (sc->sc_dying)
850 return;
851
a5950399 852 crit_enter();
984263bc
MD
853
854 if (tp->t_state & TS_TBLOCK) {
855 if (ISSET(sc->sc_mcr, UMCR_RTS) &&
856 ISSET(sc->sc_state, UCS_RTS_IFLOW)) {
857 DPRINTF(("ucomstart: clear RTS\n"));
858 (void)ucomctl(sc, UMCR_RTS, DMBIC);
859 }
860 } else {
861 if (!ISSET(sc->sc_mcr, UMCR_RTS) &&
862 tp->t_rawq.c_cc <= tp->t_ilowat &&
863 ISSET(sc->sc_state, UCS_RTS_IFLOW)) {
864 DPRINTF(("ucomstart: set RTS\n"));
865 (void)ucomctl(sc, UMCR_RTS, DMBIS);
866 }
867 }
868
869 if (ISSET(tp->t_state, TS_BUSY | TS_TIMEOUT | TS_TTSTOP)) {
870 ttwwakeup(tp);
871 DPRINTF(("ucomstart: stopped\n"));
872 goto out;
873 }
874
875 if (tp->t_outq.c_cc <= tp->t_olowat) {
876 if (ISSET(tp->t_state, TS_SO_OLOWAT)) {
877 CLR(tp->t_state, TS_SO_OLOWAT);
878 wakeup(TSA_OLOWAT(tp));
879 }
375a9af6 880 selwakeup(&tp->t_wsel);
984263bc
MD
881 if (tp->t_outq.c_cc == 0) {
882 if (ISSET(tp->t_state, TS_BUSY | TS_SO_OCOMPLETE) ==
883 TS_SO_OCOMPLETE && tp->t_outq.c_cc == 0) {
884 CLR(tp->t_state, TS_SO_OCOMPLETE);
885 wakeup(TSA_OCOMPLETE(tp));
886 }
887 goto out;
888 }
889 }
890
891 /* Grab the first contiguous region of buffer space. */
892 data = tp->t_outq.c_cf;
893 cbp = (struct cblock *) ((intptr_t) tp->t_outq.c_cf & ~CROUND);
894 cnt = min((char *) (cbp+1) - tp->t_outq.c_cf, tp->t_outq.c_cc);
895
896 if (cnt == 0) {
897 DPRINTF(("ucomstart: cnt == 0\n"));
898 goto out;
899 }
900
901 SET(tp->t_state, TS_BUSY);
902
903 if (cnt > sc->sc_obufsize) {
904 DPRINTF(("ucomstart: big buffer %d chars\n", cnt));
905 cnt = sc->sc_obufsize;
906 }
907 if (sc->sc_callback->ucom_write != NULL)
908 sc->sc_callback->ucom_write(sc->sc_parent, sc->sc_portno,
909 sc->sc_obuf, data, &cnt);
910 else
911 memcpy(sc->sc_obuf, data, cnt);
912
913 DPRINTF(("ucomstart: %d chars\n", cnt));
1550dfd9 914 usbd_setup_xfer(sc->sc_oxfer, sc->sc_bulkout_pipe,
984263bc
MD
915 (usbd_private_handle)sc, sc->sc_obuf, cnt,
916 USBD_NO_COPY, USBD_NO_TIMEOUT, ucomwritecb);
917 /* What can we do on error? */
918 err = usbd_transfer(sc->sc_oxfer);
919 if (err != USBD_IN_PROGRESS)
e3869ec7 920 kprintf("ucomstart: err=%s\n", usbd_errstr(err));
984263bc
MD
921
922 ttwwakeup(tp);
923
924 out:
a5950399 925 crit_exit();
984263bc
MD
926}
927
6ed427ca 928static void
984263bc
MD
929ucomstop(struct tty *tp, int flag)
930{
931 struct ucom_softc *sc;
984263bc 932
1e089e7e 933 sc = devclass_get_softc(ucom_devclass, UCOMUNIT(tp->t_dev));
984263bc
MD
934
935 DPRINTF(("ucomstop: %d\n", flag));
936
937 if (flag & FREAD) {
6a76f45a
MD
938 /*
939 * This is just supposed to flush pending receive data,
940 * not stop the reception of data entirely!
941 */
984263bc
MD
942 DPRINTF(("ucomstop: read\n"));
943 ucomstopread(sc);
6a76f45a 944 ucomstartread(sc);
984263bc
MD
945 }
946
947 if (flag & FWRITE) {
948 DPRINTF(("ucomstop: write\n"));
a5950399 949 crit_enter();
984263bc
MD
950 if (ISSET(tp->t_state, TS_BUSY)) {
951 /* XXX do what? */
952 if (!ISSET(tp->t_state, TS_TTSTOP))
953 SET(tp->t_state, TS_FLUSH);
954 }
a5950399 955 crit_exit();
984263bc
MD
956 }
957
958 DPRINTF(("ucomstop: done\n"));
959}
960
6ed427ca 961static void
984263bc
MD
962ucomwritecb(usbd_xfer_handle xfer, usbd_private_handle p, usbd_status status)
963{
964 struct ucom_softc *sc = (struct ucom_softc *)p;
965 struct tty *tp = sc->sc_tty;
966 u_int32_t cc;
984263bc
MD
967
968 DPRINTF(("ucomwritecb: status = %d\n", status));
969
970 if (status == USBD_CANCELLED || sc->sc_dying)
971 goto error;
972
973 if (status != USBD_NORMAL_COMPLETION) {
e3869ec7 974 kprintf("%s: ucomwritecb: %s\n",
6ed427ca 975 device_get_nameunit(sc->sc_dev), usbd_errstr(status));
984263bc
MD
976 if (status == USBD_STALLED)
977 usbd_clear_endpoint_stall_async(sc->sc_bulkin_pipe);
6a76f45a
MD
978 /*
979 * XXX. We may need a flag to sequence ucomstopread() and
980 * ucomstartread() to handle the case where ucomstartread()
981 * is called after ucomstopread() but before the request has
982 * been properly canceled?
983 */
984263bc
MD
984 goto error;
985 }
986
987 usbd_get_xfer_status(xfer, NULL, NULL, &cc, NULL);
988 DPRINTF(("ucomwritecb: cc = %d\n", cc));
62ade751 989 if (cc <= sc->sc_opkthdrlen) {
e3869ec7 990 kprintf("%s: sent size too small, cc = %d\n",
6ed427ca 991 device_get_nameunit(sc->sc_dev), cc);
62ade751
MD
992 goto error;
993 }
984263bc
MD
994
995 /* convert from USB bytes to tty bytes */
996 cc -= sc->sc_opkthdrlen;
997
a5950399 998 crit_enter();
984263bc
MD
999 CLR(tp->t_state, TS_BUSY);
1000 if (ISSET(tp->t_state, TS_FLUSH))
1001 CLR(tp->t_state, TS_FLUSH);
1002 else
1003 ndflush(&tp->t_outq, cc);
1004 (*linesw[tp->t_line].l_start)(tp);
a5950399 1005 crit_exit();
984263bc
MD
1006
1007 return;
1008
1009 error:
a5950399 1010 crit_enter();
984263bc 1011 CLR(tp->t_state, TS_BUSY);
a5950399 1012 crit_exit();
984263bc
MD
1013 return;
1014}
1015
6ed427ca 1016static usbd_status
984263bc
MD
1017ucomstartread(struct ucom_softc *sc)
1018{
1019 usbd_status err;
1020
1021 DPRINTF(("ucomstartread: start\n"));
1022
1023 sc->sc_state &= ~UCS_RXSTOP;
1024
1025 if (sc->sc_bulkin_pipe == NULL)
1026 return (USBD_NORMAL_COMPLETION);
1027
1550dfd9
MD
1028 usbd_setup_xfer(sc->sc_ixfer, sc->sc_bulkin_pipe,
1029 (usbd_private_handle)sc,
984263bc
MD
1030 sc->sc_ibuf, sc->sc_ibufsize,
1031 USBD_SHORT_XFER_OK | USBD_NO_COPY,
1032 USBD_NO_TIMEOUT, ucomreadcb);
1033
1034 err = usbd_transfer(sc->sc_ixfer);
1035 if (err != USBD_IN_PROGRESS) {
1036 DPRINTF(("ucomstartread: err = %s\n", usbd_errstr(err)));
1037 return (err);
1038 }
1039
1040 return (USBD_NORMAL_COMPLETION);
1041}
1042
6ed427ca 1043static void
984263bc
MD
1044ucomreadcb(usbd_xfer_handle xfer, usbd_private_handle p, usbd_status status)
1045{
1046 struct ucom_softc *sc = (struct ucom_softc *)p;
1047 struct tty *tp = sc->sc_tty;
1048 int (*rint) (int c, struct tty *tp) = linesw[tp->t_line].l_rint;
1049 usbd_status err;
1050 u_int32_t cc;
1051 u_char *cp;
1052 int lostcc;
984263bc
MD
1053
1054 DPRINTF(("ucomreadcb: status = %d\n", status));
1055
1056 if (status != USBD_NORMAL_COMPLETION) {
1057 if (!(sc->sc_state & UCS_RXSTOP))
e3869ec7 1058 kprintf("%s: ucomreadcb: %s\n",
6ed427ca 1059 device_get_nameunit(sc->sc_dev), usbd_errstr(status));
984263bc
MD
1060 if (status == USBD_STALLED)
1061 usbd_clear_endpoint_stall_async(sc->sc_bulkin_pipe);
1062 /* XXX we should restart after some delay. */
1063 return;
1064 }
1065
1066 usbd_get_xfer_status(xfer, NULL, (void **)&cp, &cc, NULL);
1067 DPRINTF(("ucomreadcb: got %d chars, tp = %p\n", cc, tp));
62ade751
MD
1068 if (cc == 0)
1069 goto resubmit;
1070
1071 if (sc->sc_callback->ucom_read != NULL) {
984263bc
MD
1072 sc->sc_callback->ucom_read(sc->sc_parent, sc->sc_portno,
1073 &cp, &cc);
62ade751
MD
1074 }
1075
1076 if (cc > sc->sc_ibufsize) {
e3869ec7 1077 kprintf("%s: invalid receive data size, %d chars\n",
6ed427ca 1078 device_get_nameunit(sc->sc_dev), cc);
62ade751
MD
1079 goto resubmit;
1080 }
1081 if (cc < 1)
1082 goto resubmit;
984263bc 1083
a5950399 1084 crit_enter();
984263bc
MD
1085 if (tp->t_state & TS_CAN_BYPASS_L_RINT) {
1086 if (tp->t_rawq.c_cc + cc > tp->t_ihiwat
1087 && (sc->sc_state & UCS_RTS_IFLOW
1088 || tp->t_iflag & IXOFF)
1089 && !(tp->t_state & TS_TBLOCK))
1090 ttyblock(tp);
1091 lostcc = b_to_q((char *)cp, cc, &tp->t_rawq);
1092 tp->t_rawcc += cc;
6a76f45a
MD
1093 if (sc->hotchar) {
1094 while (cc) {
1095 if (*cp == sc->hotchar)
1096 break;
1097 --cc;
1098 ++cp;
1099 }
1100 if (cc)
1101 setsofttty();
1102 }
984263bc
MD
1103 ttwakeup(tp);
1104 if (tp->t_state & TS_TTSTOP
1105 && (tp->t_iflag & IXANY
1106 || tp->t_cc[VSTART] == tp->t_cc[VSTOP])) {
1107 tp->t_state &= ~TS_TTSTOP;
1108 tp->t_lflag &= ~FLUSHO;
1109 ucomstart(tp);
1110 }
1111 if (lostcc > 0)
6ed427ca 1112 kprintf("%s: lost %d chars\n", device_get_nameunit(sc->sc_dev),
984263bc
MD
1113 lostcc);
1114 } else {
1115 /* Give characters to tty layer. */
62ade751
MD
1116 while (cc > 0) {
1117 DPRINTFN(7, ("ucomreadcb: char = 0x%02x\n", *cp));
1118 if ((*rint)(*cp, tp) == -1) {
984263bc 1119 /* XXX what should we do? */
e3869ec7 1120 kprintf("%s: lost %d chars\n",
6ed427ca 1121 device_get_nameunit(sc->sc_dev), cc);
984263bc
MD
1122 break;
1123 }
62ade751
MD
1124 cc--;
1125 cp++;
984263bc
MD
1126 }
1127 }
a5950399 1128 crit_exit();
984263bc 1129
62ade751 1130resubmit:
984263bc
MD
1131 err = ucomstartread(sc);
1132 if (err) {
6ed427ca 1133 kprintf("%s: read start failed\n", device_get_nameunit(sc->sc_dev));
984263bc
MD
1134 /* XXX what should we dow now? */
1135 }
1136
1137 if ((sc->sc_state & UCS_RTS_IFLOW) && !ISSET(sc->sc_mcr, UMCR_RTS)
1138 && !(tp->t_state & TS_TBLOCK))
1139 ucomctl(sc, UMCR_RTS, DMBIS);
1140}
1141
6ed427ca 1142static void
984263bc
MD
1143ucom_cleanup(struct ucom_softc *sc)
1144{
1145 DPRINTF(("ucom_cleanup: closing pipes\n"));
1146
1147 ucom_shutdown(sc);
1148 if (sc->sc_bulkin_pipe != NULL) {
1149 usbd_abort_pipe(sc->sc_bulkin_pipe);
1150 usbd_close_pipe(sc->sc_bulkin_pipe);
1151 sc->sc_bulkin_pipe = NULL;
1152 }
1153 if (sc->sc_bulkout_pipe != NULL) {
1154 usbd_abort_pipe(sc->sc_bulkout_pipe);
1155 usbd_close_pipe(sc->sc_bulkout_pipe);
1156 sc->sc_bulkout_pipe = NULL;
1157 }
1158 if (sc->sc_ixfer != NULL) {
1159 usbd_free_xfer(sc->sc_ixfer);
1160 sc->sc_ixfer = NULL;
1161 }
1162 if (sc->sc_oxfer != NULL) {
1163 usbd_free_xfer(sc->sc_oxfer);
1164 sc->sc_oxfer = NULL;
1165 }
1166}
1167
6ed427ca 1168static void
984263bc
MD
1169ucomstopread(struct ucom_softc *sc)
1170{
1171 usbd_status err;
1172
1173 DPRINTF(("ucomstopread: enter\n"));
1174
1175 if (!(sc->sc_state & UCS_RXSTOP)) {
62ade751 1176 sc->sc_state |= UCS_RXSTOP;
984263bc
MD
1177 if (sc->sc_bulkin_pipe == NULL) {
1178 DPRINTF(("ucomstopread: bulkin pipe NULL\n"));
1179 return;
1180 }
984263bc
MD
1181 err = usbd_abort_pipe(sc->sc_bulkin_pipe);
1182 if (err) {
1183 DPRINTF(("ucomstopread: err = %s\n",
1184 usbd_errstr(err)));
1185 }
1186 }
1187
1188 DPRINTF(("ucomstopread: leave\n"));
1189}
1190
1191static void
1192disc_optim(struct tty *tp, struct termios *t, struct ucom_softc *sc)
1193{
1194 if (!(t->c_iflag & (ICRNL | IGNCR | IMAXBEL | INLCR | ISTRIP | IXON))
1195 && (!(t->c_iflag & BRKINT) || (t->c_iflag & IGNBRK))
1196 && (!(t->c_iflag & PARMRK)
1197 || (t->c_iflag & (IGNPAR | IGNBRK)) == (IGNPAR | IGNBRK))
1198 && !(t->c_lflag & (ECHO | ICANON | IEXTEN | ISIG | PENDIN))
1199 && linesw[tp->t_line].l_rint == ttyinput) {
1200 DPRINTF(("disc_optim: bypass l_rint\n"));
1201 tp->t_state |= TS_CAN_BYPASS_L_RINT;
1202 } else {
1203 DPRINTF(("disc_optim: can't bypass l_rint\n"));
1204 tp->t_state &= ~TS_CAN_BYPASS_L_RINT;
1205 }
1206 sc->hotchar = linesw[tp->t_line].l_hotchar;
1207}