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[netbsd-mini2440.git] / sys / dev / usb / ucom.c
blob417a73b444a7882d9d1e3433e5c0460c25ebe35e
1 /* $NetBSD: ucom.c,v 1.81 2009/12/06 21:40:31 dyoung Exp $ */
2
3 /*
4 * Copyright (c) 1998, 2000 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Lennart Augustsson (lennart@augustsson.net) at
9 * Carlstedt Research & Technology.
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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 */
32 /*
33 * This code is very heavily based on the 16550 driver, com.c.
34 */
35
36 #include <sys/cdefs.h>
37 __KERNEL_RCSID(0, "$NetBSD: ucom.c,v 1.81 2009/12/06 21:40:31 dyoung Exp $");
38
39 #include <sys/param.h>
40 #include <sys/systm.h>
41 #include <sys/kernel.h>
42 #include <sys/ioctl.h>
43 #include <sys/conf.h>
44 #include <sys/tty.h>
45 #include <sys/file.h>
46 #include <sys/select.h>
47 #include <sys/proc.h>
48 #include <sys/vnode.h>
49 #include <sys/device.h>
50 #include <sys/poll.h>
51 #include <sys/queue.h>
52 #include <sys/kauth.h>
53 #if defined(__NetBSD__)
54 #include "rnd.h"
55 #if NRND > 0
56 #include <sys/rnd.h>
57 #endif
58 #endif
59
60 #include <dev/usb/usb.h>
61
62 #include <dev/usb/usbdi.h>
63 #include <dev/usb/usbdi_util.h>
64 #include <dev/usb/usbdevs.h>
65 #include <dev/usb/usb_quirks.h>
66
67 #include <dev/usb/ucomvar.h>
68
69 #include "ucom.h"
70
71 #include "locators.h"
72
73 #if NUCOM > 0
74
75 #ifdef UCOM_DEBUG
76 #define DPRINTFN(n, x) if (ucomdebug > (n)) logprintf x
77 int ucomdebug = 0;
78 #else
79 #define DPRINTFN(n, x)
80 #endif
81 #define DPRINTF(x) DPRINTFN(0, x)
82
83 #define UCOMUNIT_MASK 0x3ffff
84 #define UCOMDIALOUT_MASK 0x80000
85 #define UCOMCALLUNIT_MASK 0x40000
86
87 #define UCOMUNIT(x) (minor(x) & UCOMUNIT_MASK)
88 #define UCOMDIALOUT(x) (minor(x) & UCOMDIALOUT_MASK)
89 #define UCOMCALLUNIT(x) (minor(x) & UCOMCALLUNIT_MASK)
90
91 /*
92 * XXX: We can submit multiple input/output buffers to the usb stack
93 * to improve throughput, but the usb stack is too lame to deal with this
94 * in a number of places.
95 */
96 #define UCOM_IN_BUFFS 1
97 #define UCOM_OUT_BUFFS 1
98
99 struct ucom_buffer {
100 SIMPLEQ_ENTRY(ucom_buffer) ub_link;
101 usbd_xfer_handle ub_xfer;
102 u_char *ub_data;
103 u_int ub_len;
104 u_int ub_index;
105 };
106
107 struct ucom_softc {
108 USBBASEDEVICE sc_dev; /* base device */
109
110 usbd_device_handle sc_udev; /* USB device */
111
112 usbd_interface_handle sc_iface; /* data interface */
113
114 int sc_bulkin_no; /* bulk in endpoint address */
115 usbd_pipe_handle sc_bulkin_pipe; /* bulk in pipe */
116 u_int sc_ibufsize; /* read buffer size */
117 u_int sc_ibufsizepad; /* read buffer size padded */
118 struct ucom_buffer sc_ibuff[UCOM_IN_BUFFS];
119 SIMPLEQ_HEAD(, ucom_buffer) sc_ibuff_empty;
120 SIMPLEQ_HEAD(, ucom_buffer) sc_ibuff_full;
121
122 int sc_bulkout_no; /* bulk out endpoint address */
123 usbd_pipe_handle sc_bulkout_pipe;/* bulk out pipe */
124 u_int sc_obufsize; /* write buffer size */
125 u_int sc_opkthdrlen; /* header length of */
126 struct ucom_buffer sc_obuff[UCOM_OUT_BUFFS];
127 SIMPLEQ_HEAD(, ucom_buffer) sc_obuff_free;
128 SIMPLEQ_HEAD(, ucom_buffer) sc_obuff_full;
129
130 void *sc_si;
131
132 struct ucom_methods *sc_methods;
133 void *sc_parent;
134 int sc_portno;
135
136 struct tty *sc_tty; /* our tty */
137 u_char sc_lsr;
138 u_char sc_msr;
139 u_char sc_mcr;
140 volatile u_char sc_rx_stopped;
141 u_char sc_rx_unblock;
142 u_char sc_tx_stopped;
143 int sc_swflags;
144
145 u_char sc_opening; /* lock during open */
146 int sc_refcnt;
147 u_char sc_dying; /* disconnecting */
148
149 #if defined(__NetBSD__) && NRND > 0
150 rndsource_element_t sc_rndsource; /* random source */
151 #endif
152 };
153
154 dev_type_open(ucomopen);
155 dev_type_close(ucomclose);
156 dev_type_read(ucomread);
157 dev_type_write(ucomwrite);
158 dev_type_ioctl(ucomioctl);
159 dev_type_stop(ucomstop);
160 dev_type_tty(ucomtty);
161 dev_type_poll(ucompoll);
162
163 const struct cdevsw ucom_cdevsw = {
164 ucomopen, ucomclose, ucomread, ucomwrite, ucomioctl,
165 ucomstop, ucomtty, ucompoll, nommap, ttykqfilter, D_TTY
166 };
167
168 static void ucom_cleanup(struct ucom_softc *);
169 static int ucomparam(struct tty *, struct termios *);
170 static int ucomhwiflow(struct tty *, int);
171 static void ucomstart(struct tty *);
172 static void ucom_shutdown(struct ucom_softc *);
173 static int ucom_do_ioctl(struct ucom_softc *, u_long, void *,
174 int, struct lwp *);
175 static void ucom_dtr(struct ucom_softc *, int);
176 static void ucom_rts(struct ucom_softc *, int);
177 static void ucom_break(struct ucom_softc *, int);
178 static void tiocm_to_ucom(struct ucom_softc *, u_long, int);
179 static int ucom_to_tiocm(struct ucom_softc *);
180
181 static void ucomreadcb(usbd_xfer_handle, usbd_private_handle, usbd_status);
182 static void ucom_submit_write(struct ucom_softc *, struct ucom_buffer *);
183 static void ucom_write_status(struct ucom_softc *, struct ucom_buffer *,
184 usbd_status);
185
186 static void ucomwritecb(usbd_xfer_handle, usbd_private_handle, usbd_status);
187 static void ucom_read_complete(struct ucom_softc *);
188 static usbd_status ucomsubmitread(struct ucom_softc *, struct ucom_buffer *);
189 static void ucom_softintr(void *);
190
191 USB_DECLARE_DRIVER(ucom);
192
193 USB_MATCH(ucom)
194 {
195 return (1);
196 }
197
198 USB_ATTACH(ucom)
199 {
200 struct ucom_softc *sc = device_private(self);
201 struct ucom_attach_args *uca = aux;
202 struct tty *tp;
203
204 if (uca->info != NULL)
205 printf(": %s", uca->info);
206 printf("\n");
207
208 sc->sc_dev = self;
209 sc->sc_udev = uca->device;
210 sc->sc_iface = uca->iface;
211 sc->sc_bulkout_no = uca->bulkout;
212 sc->sc_bulkin_no = uca->bulkin;
213 sc->sc_ibufsize = uca->ibufsize;
214 sc->sc_ibufsizepad = uca->ibufsizepad;
215 sc->sc_obufsize = uca->obufsize;
216 sc->sc_opkthdrlen = uca->opkthdrlen;
217 sc->sc_methods = uca->methods;
218 sc->sc_parent = uca->arg;
219 sc->sc_portno = uca->portno;
220
221 sc->sc_lsr = 0;
222 sc->sc_msr = 0;
223 sc->sc_mcr = 0;
224 sc->sc_tx_stopped = 0;
225 sc->sc_swflags = 0;
226 sc->sc_opening = 0;
227 sc->sc_refcnt = 0;
228 sc->sc_dying = 0;
229
230 sc->sc_si = softint_establish(SOFTINT_NET, ucom_softintr, sc);
231
232 tp = ttymalloc();
233 tp->t_oproc = ucomstart;
234 tp->t_param = ucomparam;
235 tp->t_hwiflow = ucomhwiflow;
236 sc->sc_tty = tp;
237
238 DPRINTF(("ucom_attach: tty_attach %p\n", tp));
239 tty_attach(tp);
240
241 #if defined(__NetBSD__) && NRND > 0
242 rnd_attach_source(&sc->sc_rndsource, USBDEVNAME(sc->sc_dev),
243 RND_TYPE_TTY, 0);
244 #endif
245
246 if (!pmf_device_register(self, NULL, NULL))
247 aprint_error_dev(self, "couldn't establish power handler\n");
248 USB_ATTACH_SUCCESS_RETURN;
249 }
250
251 USB_DETACH(ucom)
252 {
253 struct ucom_softc *sc = device_private(self);
254 struct tty *tp = sc->sc_tty;
255 int maj, mn;
256 int s, i;
257
258 DPRINTF(("ucom_detach: sc=%p flags=%d tp=%p, pipe=%d,%d\n",
259 sc, flags, tp, sc->sc_bulkin_no, sc->sc_bulkout_no));
260
261 sc->sc_dying = 1;
262 pmf_device_deregister(self);
263
264 if (sc->sc_bulkin_pipe != NULL)
265 usbd_abort_pipe(sc->sc_bulkin_pipe);
266 if (sc->sc_bulkout_pipe != NULL)
267 usbd_abort_pipe(sc->sc_bulkout_pipe);
268
269 s = splusb();
270 if (--sc->sc_refcnt >= 0) {
271 /* Wake up anyone waiting */
272 if (tp != NULL) {
273 mutex_spin_enter(&tty_lock);
274 CLR(tp->t_state, TS_CARR_ON);
275 CLR(tp->t_cflag, CLOCAL | MDMBUF);
276 ttyflush(tp, FREAD|FWRITE);
277 mutex_spin_exit(&tty_lock);
278 }
279 /* Wait for processes to go away. */
280 usb_detach_wait(USBDEV(sc->sc_dev));
281 }
282
283 softint_disestablish(sc->sc_si);
284 splx(s);
285
286 /* locate the major number */
287 maj = cdevsw_lookup_major(&ucom_cdevsw);
288
289 /* Nuke the vnodes for any open instances. */
290 mn = device_unit(self);
291 DPRINTF(("ucom_detach: maj=%d mn=%d\n", maj, mn));
292 vdevgone(maj, mn, mn, VCHR);
293 vdevgone(maj, mn | UCOMDIALOUT_MASK, mn | UCOMDIALOUT_MASK, VCHR);
294 vdevgone(maj, mn | UCOMCALLUNIT_MASK, mn | UCOMCALLUNIT_MASK, VCHR);
295
296 /* Detach and free the tty. */
297 if (tp != NULL) {
298 tty_detach(tp);
299 ttyfree(tp);
300 sc->sc_tty = NULL;
301 }
302
303 for (i = 0; i < UCOM_IN_BUFFS; i++) {
304 if (sc->sc_ibuff[i].ub_xfer != NULL)
305 usbd_free_xfer(sc->sc_ibuff[i].ub_xfer);
306 }
307
308 for (i = 0; i < UCOM_OUT_BUFFS; i++) {
309 if (sc->sc_obuff[i].ub_xfer != NULL)
310 usbd_free_xfer(sc->sc_obuff[i].ub_xfer);
311 }
312
313 /* Detach the random source */
314 #if defined(__NetBSD__) && NRND > 0
315 rnd_detach_source(&sc->sc_rndsource);
316 #endif
317
318 return (0);
319 }
320
321 int
322 ucom_activate(device_ptr_t self, enum devact act)
323 {
324 struct ucom_softc *sc = device_private(self);
325
326 DPRINTFN(5,("ucom_activate: %d\n", act));
327
328 switch (act) {
329 case DVACT_DEACTIVATE:
330 sc->sc_dying = 1;
331 return 0;
332 default:
333 return EOPNOTSUPP;
334 }
335 }
336
337 void
338 ucom_shutdown(struct ucom_softc *sc)
339 {
340 struct tty *tp = sc->sc_tty;
341
342 DPRINTF(("ucom_shutdown\n"));
343 /*
344 * Hang up if necessary. Wait a bit, so the other side has time to
345 * notice even if we immediately open the port again.
346 */
347 if (ISSET(tp->t_cflag, HUPCL)) {
348 ucom_dtr(sc, 0);
349 (void)tsleep(sc, TTIPRI, ttclos, hz);
350 }
351 }
352
353 int
354 ucomopen(dev_t dev, int flag, int mode, struct lwp *l)
355 {
356 int unit = UCOMUNIT(dev);
357 usbd_status err;
358 struct ucom_softc *sc = device_lookup_private(&ucom_cd, unit);
359 struct ucom_buffer *ub;
360 struct tty *tp;
361 int s, i;
362 int error;
363
364 if (sc == NULL)
365 return (ENXIO);
366
367 if (sc->sc_dying)
368 return (EIO);
369
370 if (!device_is_active(sc->sc_dev))
371 return (ENXIO);
372
373 tp = sc->sc_tty;
374
375 DPRINTF(("ucomopen: unit=%d, tp=%p\n", unit, tp));
376
377 if (kauth_authorize_device_tty(l->l_cred, KAUTH_DEVICE_TTY_OPEN, tp))
378 return (EBUSY);
379
380 s = spltty();
381
382 /*
383 * Do the following iff this is a first open.
384 */
385 while (sc->sc_opening)
386 tsleep(&sc->sc_opening, PRIBIO, "ucomop", 0);
387
388 if (sc->sc_dying) {
389 splx(s);
390 return (EIO);
391 }
392 sc->sc_opening = 1;
393
394 if (!ISSET(tp->t_state, TS_ISOPEN) && tp->t_wopen == 0) {
395 struct termios t;
396
397 tp->t_dev = dev;
398
399 if (sc->sc_methods->ucom_open != NULL) {
400 error = sc->sc_methods->ucom_open(sc->sc_parent,
401 sc->sc_portno);
402 if (error) {
403 ucom_cleanup(sc);
404 sc->sc_opening = 0;
405 wakeup(&sc->sc_opening);
406 splx(s);
407 return (error);
408 }
409 }
410
411 ucom_status_change(sc);
412
413 /*
414 * Initialize the termios status to the defaults. Add in the
415 * sticky bits from TIOCSFLAGS.
416 */
417 t.c_ispeed = 0;
418 t.c_ospeed = TTYDEF_SPEED;
419 t.c_cflag = TTYDEF_CFLAG;
420 if (ISSET(sc->sc_swflags, TIOCFLAG_CLOCAL))
421 SET(t.c_cflag, CLOCAL);
422 if (ISSET(sc->sc_swflags, TIOCFLAG_CRTSCTS))
423 SET(t.c_cflag, CRTSCTS);
424 if (ISSET(sc->sc_swflags, TIOCFLAG_MDMBUF))
425 SET(t.c_cflag, MDMBUF);
426 /* Make sure ucomparam() will do something. */
427 tp->t_ospeed = 0;
428 (void) ucomparam(tp, &t);
429 tp->t_iflag = TTYDEF_IFLAG;
430 tp->t_oflag = TTYDEF_OFLAG;
431 tp->t_lflag = TTYDEF_LFLAG;
432 ttychars(tp);
433 ttsetwater(tp);
434
435 /*
436 * Turn on DTR. We must always do this, even if carrier is not
437 * present, because otherwise we'd have to use TIOCSDTR
438 * immediately after setting CLOCAL, which applications do not
439 * expect. We always assert DTR while the device is open
440 * unless explicitly requested to deassert it. Ditto RTS.
441 */
442 ucom_dtr(sc, 1);
443 ucom_rts(sc, 1);
444
445 DPRINTF(("ucomopen: open pipes in=%d out=%d\n",
446 sc->sc_bulkin_no, sc->sc_bulkout_no));
447
448 /* Open the bulk pipes */
449 err = usbd_open_pipe(sc->sc_iface, sc->sc_bulkin_no,
450 USBD_EXCLUSIVE_USE, &sc->sc_bulkin_pipe);
451 if (err) {
452 DPRINTF(("%s: open bulk in error (addr %d), err=%s\n",
453 USBDEVNAME(sc->sc_dev), sc->sc_bulkin_no,
454 usbd_errstr(err)));
455 error = EIO;
456 goto fail_0;
457 }
458 err = usbd_open_pipe(sc->sc_iface, sc->sc_bulkout_no,
459 USBD_EXCLUSIVE_USE, &sc->sc_bulkout_pipe);
460 if (err) {
461 DPRINTF(("%s: open bulk out error (addr %d), err=%s\n",
462 USBDEVNAME(sc->sc_dev), sc->sc_bulkout_no,
463 usbd_errstr(err)));
464 error = EIO;
465 goto fail_1;
466 }
467
468 sc->sc_rx_unblock = 0;
469 sc->sc_rx_stopped = 0;
470 sc->sc_tx_stopped = 0;
471
472 memset(sc->sc_ibuff, 0, sizeof(sc->sc_ibuff));
473 memset(sc->sc_obuff, 0, sizeof(sc->sc_obuff));
474
475 SIMPLEQ_INIT(&sc->sc_ibuff_empty);
476 SIMPLEQ_INIT(&sc->sc_ibuff_full);
477 SIMPLEQ_INIT(&sc->sc_obuff_free);
478 SIMPLEQ_INIT(&sc->sc_obuff_full);
479
480 /* Allocate input buffers */
481 for (ub = &sc->sc_ibuff[0]; ub != &sc->sc_ibuff[UCOM_IN_BUFFS];
482 ub++) {
483 ub->ub_xfer = usbd_alloc_xfer(sc->sc_udev);
484 if (ub->ub_xfer == NULL) {
485 error = ENOMEM;
486 goto fail_2;
487 }
488 ub->ub_data = usbd_alloc_buffer(ub->ub_xfer,
489 sc->sc_ibufsizepad);
490 if (ub->ub_data == NULL) {
491 error = ENOMEM;
492 goto fail_2;
493 }
494
495 if (ucomsubmitread(sc, ub) != USBD_NORMAL_COMPLETION) {
496 error = EIO;
497 goto fail_2;
498 }
499 }
500
501 for (ub = &sc->sc_obuff[0]; ub != &sc->sc_obuff[UCOM_OUT_BUFFS];
502 ub++) {
503 ub->ub_xfer = usbd_alloc_xfer(sc->sc_udev);
504 if (ub->ub_xfer == NULL) {
505 error = ENOMEM;
506 goto fail_2;
507 }
508 ub->ub_data = usbd_alloc_buffer(ub->ub_xfer,
509 sc->sc_obufsize);
510 if (ub->ub_data == NULL) {
511 error = ENOMEM;
512 goto fail_2;
513 }
514
515 SIMPLEQ_INSERT_TAIL(&sc->sc_obuff_free, ub, ub_link);
516 }
517
518 }
519 sc->sc_opening = 0;
520 wakeup(&sc->sc_opening);
521 splx(s);
522
523 error = ttyopen(tp, UCOMDIALOUT(dev), ISSET(flag, O_NONBLOCK));
524 if (error)
525 goto bad;
526
527 error = (*tp->t_linesw->l_open)(dev, tp);
528 if (error)
529 goto bad;
530
531 return (0);
532
533 fail_2:
534 usbd_abort_pipe(sc->sc_bulkin_pipe);
535 for (i = 0; i < UCOM_IN_BUFFS; i++) {
536 if (sc->sc_ibuff[i].ub_xfer != NULL) {
537 usbd_free_xfer(sc->sc_ibuff[i].ub_xfer);
538 sc->sc_ibuff[i].ub_xfer = NULL;
539 sc->sc_ibuff[i].ub_data = NULL;
540 }
541 }
542 usbd_abort_pipe(sc->sc_bulkout_pipe);
543 for (i = 0; i < UCOM_OUT_BUFFS; i++) {
544 if (sc->sc_obuff[i].ub_xfer != NULL) {
545 usbd_free_xfer(sc->sc_obuff[i].ub_xfer);
546 sc->sc_obuff[i].ub_xfer = NULL;
547 sc->sc_obuff[i].ub_data = NULL;
548 }
549 }
550
551 usbd_close_pipe(sc->sc_bulkout_pipe);
552 sc->sc_bulkout_pipe = NULL;
553 fail_1:
554 usbd_close_pipe(sc->sc_bulkin_pipe);
555 sc->sc_bulkin_pipe = NULL;
556 fail_0:
557 sc->sc_opening = 0;
558 wakeup(&sc->sc_opening);
559 splx(s);
560 return (error);
561
562 bad:
563 s = spltty();
564 CLR(tp->t_state, TS_BUSY);
565 if (!ISSET(tp->t_state, TS_ISOPEN) && tp->t_wopen == 0) {
566 /*
567 * We failed to open the device, and nobody else had it opened.
568 * Clean up the state as appropriate.
569 */
570 ucom_cleanup(sc);
571 }
572 splx(s);
573
574 return (error);
575 }
576
577 int
578 ucomclose(dev_t dev, int flag, int mode, struct lwp *l)
579 {
580 struct ucom_softc *sc = device_lookup_private(&ucom_cd, UCOMUNIT(dev));
581 struct tty *tp = sc->sc_tty;
582 int s;
583
584 DPRINTF(("ucomclose: unit=%d\n", UCOMUNIT(dev)));
585 if (!ISSET(tp->t_state, TS_ISOPEN))
586 return (0);
587
588 s = spltty();
589 sc->sc_refcnt++;
590 CLR(tp->t_state, TS_BUSY);
591
592 (*tp->t_linesw->l_close)(tp, flag);
593 ttyclose(tp);
594
595 if (!ISSET(tp->t_state, TS_ISOPEN) && tp->t_wopen == 0) {
596 /*
597 * Although we got a last close, the device may still be in
598 * use; e.g. if this was the dialout node, and there are still
599 * processes waiting for carrier on the non-dialout node.
600 */
601 ucom_cleanup(sc);
602 }
603
604 if (sc->sc_methods->ucom_close != NULL)
605 sc->sc_methods->ucom_close(sc->sc_parent, sc->sc_portno);
606
607 if (--sc->sc_refcnt < 0)
608 usb_detach_wakeup(USBDEV(sc->sc_dev));
609 splx(s);
610
611 return (0);
612 }
613
614 int
615 ucomread(dev_t dev, struct uio *uio, int flag)
616 {
617 struct ucom_softc *sc = device_lookup_private(&ucom_cd, UCOMUNIT(dev));
618 struct tty *tp = sc->sc_tty;
619 int error;
620
621 if (sc->sc_dying)
622 return (EIO);
623
624 sc->sc_refcnt++;
625 error = ((*tp->t_linesw->l_read)(tp, uio, flag));
626 if (--sc->sc_refcnt < 0)
627 usb_detach_wakeup(USBDEV(sc->sc_dev));
628 return (error);
629 }
630
631 int
632 ucomwrite(dev_t dev, struct uio *uio, int flag)
633 {
634 struct ucom_softc *sc = device_lookup_private(&ucom_cd, UCOMUNIT(dev));
635 struct tty *tp = sc->sc_tty;
636 int error;
637
638 if (sc->sc_dying)
639 return (EIO);
640
641 sc->sc_refcnt++;
642 error = ((*tp->t_linesw->l_write)(tp, uio, flag));
643 if (--sc->sc_refcnt < 0)
644 usb_detach_wakeup(USBDEV(sc->sc_dev));
645 return (error);
646 }
647
648 int
649 ucompoll(dev_t dev, int events, struct lwp *l)
650 {
651 struct ucom_softc *sc = device_lookup_private(&ucom_cd, UCOMUNIT(dev));
652 struct tty *tp = sc->sc_tty;
653 int revents;
654
655 if (sc->sc_dying)
656 return (POLLHUP);
657
658 sc->sc_refcnt++;
659 revents = ((*tp->t_linesw->l_poll)(tp, events, l));
660 if (--sc->sc_refcnt < 0)
661 usb_detach_wakeup(USBDEV(sc->sc_dev));
662 return (revents);
663 }
664
665 struct tty *
666 ucomtty(dev_t dev)
667 {
668 struct ucom_softc *sc = device_lookup_private(&ucom_cd, UCOMUNIT(dev));
669 struct tty *tp = sc->sc_tty;
670
671 return (tp);
672 }
673
674 int
675 ucomioctl(dev_t dev, u_long cmd, void *data, int flag, struct lwp *l)
676 {
677 struct ucom_softc *sc = device_lookup_private(&ucom_cd, UCOMUNIT(dev));
678 int error;
679
680 sc->sc_refcnt++;
681 error = ucom_do_ioctl(sc, cmd, data, flag, l);
682 if (--sc->sc_refcnt < 0)
683 usb_detach_wakeup(USBDEV(sc->sc_dev));
684 return (error);
685 }
686
687 static int
688 ucom_do_ioctl(struct ucom_softc *sc, u_long cmd, void *data,
689 int flag, struct lwp *l)
690 {
691 struct tty *tp = sc->sc_tty;
692 int error;
693 int s;
694
695 if (sc->sc_dying)
696 return (EIO);
697
698 DPRINTF(("ucomioctl: cmd=0x%08lx\n", cmd));
699
700 error = (*tp->t_linesw->l_ioctl)(tp, cmd, data, flag, l);
701 if (error != EPASSTHROUGH)
702 return (error);
703
704 error = ttioctl(tp, cmd, data, flag, l);
705 if (error != EPASSTHROUGH)
706 return (error);
707
708 if (sc->sc_methods->ucom_ioctl != NULL) {
709 error = sc->sc_methods->ucom_ioctl(sc->sc_parent,
710 sc->sc_portno, cmd, data, flag, l->l_proc);
711 if (error != EPASSTHROUGH)
712 return (error);
713 }
714
715 error = 0;
716
717 DPRINTF(("ucomioctl: our cmd=0x%08lx\n", cmd));
718 s = spltty();
719
720 switch (cmd) {
721 case TIOCSBRK:
722 ucom_break(sc, 1);
723 break;
724
725 case TIOCCBRK:
726 ucom_break(sc, 0);
727 break;
728
729 case TIOCSDTR:
730 ucom_dtr(sc, 1);
731 break;
732
733 case TIOCCDTR:
734 ucom_dtr(sc, 0);
735 break;
736
737 case TIOCGFLAGS:
738 *(int *)data = sc->sc_swflags;
739 break;
740
741 case TIOCSFLAGS:
742 error = kauth_authorize_device_tty(l->l_cred,
743 KAUTH_DEVICE_TTY_PRIVSET, tp);
744 if (error)
745 break;
746 sc->sc_swflags = *(int *)data;
747 break;
748
749 case TIOCMSET:
750 case TIOCMBIS:
751 case TIOCMBIC:
752 tiocm_to_ucom(sc, cmd, *(int *)data);
753 break;
754
755 case TIOCMGET:
756 *(int *)data = ucom_to_tiocm(sc);
757 break;
758
759 default:
760 error = EPASSTHROUGH;
761 break;
762 }
763
764 splx(s);
765
766 return (error);
767 }
768
769 static void
770 tiocm_to_ucom(struct ucom_softc *sc, u_long how, int ttybits)
771 {
772 u_char combits;
773
774 combits = 0;
775 if (ISSET(ttybits, TIOCM_DTR))
776 SET(combits, UMCR_DTR);
777 if (ISSET(ttybits, TIOCM_RTS))
778 SET(combits, UMCR_RTS);
779
780 switch (how) {
781 case TIOCMBIC:
782 CLR(sc->sc_mcr, combits);
783 break;
784
785 case TIOCMBIS:
786 SET(sc->sc_mcr, combits);
787 break;
788
789 case TIOCMSET:
790 CLR(sc->sc_mcr, UMCR_DTR | UMCR_RTS);
791 SET(sc->sc_mcr, combits);
792 break;
793 }
794
795 if (how == TIOCMSET || ISSET(combits, UMCR_DTR))
796 ucom_dtr(sc, (sc->sc_mcr & UMCR_DTR) != 0);
797 if (how == TIOCMSET || ISSET(combits, UMCR_RTS))
798 ucom_rts(sc, (sc->sc_mcr & UMCR_RTS) != 0);
799 }
800
801 static int
802 ucom_to_tiocm(struct ucom_softc *sc)
803 {
804 u_char combits;
805 int ttybits = 0;
806
807 combits = sc->sc_mcr;
808 if (ISSET(combits, UMCR_DTR))
809 SET(ttybits, TIOCM_DTR);
810 if (ISSET(combits, UMCR_RTS))
811 SET(ttybits, TIOCM_RTS);
812
813 combits = sc->sc_msr;
814 if (ISSET(combits, UMSR_DCD))
815 SET(ttybits, TIOCM_CD);
816 if (ISSET(combits, UMSR_CTS))
817 SET(ttybits, TIOCM_CTS);
818 if (ISSET(combits, UMSR_DSR))
819 SET(ttybits, TIOCM_DSR);
820 if (ISSET(combits, UMSR_RI | UMSR_TERI))
821 SET(ttybits, TIOCM_RI);
822
823 #if 0
824 XXX;
825 if (sc->sc_ier != 0)
826 SET(ttybits, TIOCM_LE);
827 #endif
828
829 return (ttybits);
830 }
831
832 static void
833 ucom_break(struct ucom_softc *sc, int onoff)
834 {
835 DPRINTF(("ucom_break: onoff=%d\n", onoff));
836
837 if (sc->sc_methods->ucom_set != NULL)
838 sc->sc_methods->ucom_set(sc->sc_parent, sc->sc_portno,
839 UCOM_SET_BREAK, onoff);
840 }
841
842 static void
843 ucom_dtr(struct ucom_softc *sc, int onoff)
844 {
845 DPRINTF(("ucom_dtr: onoff=%d\n", onoff));
846
847 if (sc->sc_methods->ucom_set != NULL)
848 sc->sc_methods->ucom_set(sc->sc_parent, sc->sc_portno,
849 UCOM_SET_DTR, onoff);
850 }
851
852 static void
853 ucom_rts(struct ucom_softc *sc, int onoff)
854 {
855 DPRINTF(("ucom_rts: onoff=%d\n", onoff));
856
857 if (sc->sc_methods->ucom_set != NULL)
858 sc->sc_methods->ucom_set(sc->sc_parent, sc->sc_portno,
859 UCOM_SET_RTS, onoff);
860 }
861
862 void
863 ucom_status_change(struct ucom_softc *sc)
864 {
865 struct tty *tp = sc->sc_tty;
866 u_char old_msr;
867
868 if (sc->sc_methods->ucom_get_status != NULL) {
869 old_msr = sc->sc_msr;
870 sc->sc_methods->ucom_get_status(sc->sc_parent, sc->sc_portno,
871 &sc->sc_lsr, &sc->sc_msr);
872 if (ISSET((sc->sc_msr ^ old_msr), UMSR_DCD))
873 (*tp->t_linesw->l_modem)(tp,
874 ISSET(sc->sc_msr, UMSR_DCD));
875 } else {
876 sc->sc_lsr = 0;
877 /* Assume DCD is present, if we have no chance to check it. */
878 sc->sc_msr = UMSR_DCD;
879 }
880 }
881
882 static int
883 ucomparam(struct tty *tp, struct termios *t)
884 {
885 struct ucom_softc *sc = device_lookup_private(&ucom_cd,
886 UCOMUNIT(tp->t_dev));
887 int error;
888
889 if (sc->sc_dying)
890 return (EIO);
891
892 /* Check requested parameters. */
893 if (t->c_ispeed && t->c_ispeed != t->c_ospeed)
894 return (EINVAL);
895
896 /*
897 * For the console, always force CLOCAL and !HUPCL, so that the port
898 * is always active.
899 */
900 if (ISSET(sc->sc_swflags, TIOCFLAG_SOFTCAR)) {
901 SET(t->c_cflag, CLOCAL);
902 CLR(t->c_cflag, HUPCL);
903 }
904
905 /*
906 * If there were no changes, don't do anything. This avoids dropping
907 * input and improves performance when all we did was frob things like
908 * VMIN and VTIME.
909 */
910 if (tp->t_ospeed == t->c_ospeed &&
911 tp->t_cflag == t->c_cflag)
912 return (0);
913
914 /* XXX lcr = ISSET(sc->sc_lcr, LCR_SBREAK) | cflag2lcr(t->c_cflag); */
915
916 /* And copy to tty. */
917 tp->t_ispeed = 0;
918 tp->t_ospeed = t->c_ospeed;
919 tp->t_cflag = t->c_cflag;
920
921 if (sc->sc_methods->ucom_param != NULL) {
922 error = sc->sc_methods->ucom_param(sc->sc_parent, sc->sc_portno,
923 t);
924 if (error)
925 return (error);
926 }
927
928 /* XXX worry about CHWFLOW */
929
930 /*
931 * Update the tty layer's idea of the carrier bit, in case we changed
932 * CLOCAL or MDMBUF. We don't hang up here; we only do that by
933 * explicit request.
934 */
935 DPRINTF(("ucomparam: l_modem\n"));
936 (void) (*tp->t_linesw->l_modem)(tp, ISSET(sc->sc_msr, UMSR_DCD));
937
938 #if 0
939 XXX what if the hardware is not open
940 if (!ISSET(t->c_cflag, CHWFLOW)) {
941 if (sc->sc_tx_stopped) {
942 sc->sc_tx_stopped = 0;
943 ucomstart(tp);
944 }
945 }
946 #endif
947
948 return (0);
949 }
950
951 static int
952 ucomhwiflow(struct tty *tp, int block)
953 {
954 struct ucom_softc *sc = device_lookup_private(&ucom_cd,
955 UCOMUNIT(tp->t_dev));
956 int old;
957
958 old = sc->sc_rx_stopped;
959 sc->sc_rx_stopped = (u_char)block;
960
961 if (old && !block) {
962 int s = splusb();
963 sc->sc_rx_unblock = 1;
964 softint_schedule(sc->sc_si);
965 splx(s);
966 }
967
968 return (1);
969 }
970
971 static void
972 ucomstart(struct tty *tp)
973 {
974 struct ucom_softc *sc = device_lookup_private(&ucom_cd,
975 UCOMUNIT(tp->t_dev));
976 struct ucom_buffer *ub;
977 int s;
978 u_char *data;
979 int cnt;
980
981 if (sc->sc_dying)
982 return;
983
984 s = spltty();
985 if (ISSET(tp->t_state, TS_BUSY | TS_TIMEOUT | TS_TTSTOP)) {
986 DPRINTFN(4,("ucomstart: no go, state=0x%x\n", tp->t_state));
987 goto out;
988 }
989 if (sc->sc_tx_stopped)
990 goto out;
991
992 if (!ttypull(tp))
993 goto out;
994
995 /* Grab the first contiguous region of buffer space. */
996 data = tp->t_outq.c_cf;
997 cnt = ndqb(&tp->t_outq, 0);
998
999 if (cnt == 0) {
1000 DPRINTF(("ucomstart: cnt==0\n"));
1001 goto out;
1002 }
1003
1004 ub = SIMPLEQ_FIRST(&sc->sc_obuff_free);
1005 KASSERT(ub != NULL);
1006 SIMPLEQ_REMOVE_HEAD(&sc->sc_obuff_free, ub_link);
1007
1008 if (SIMPLEQ_FIRST(&sc->sc_obuff_free) == NULL)
1009 SET(tp->t_state, TS_BUSY);
1010
1011 if (cnt > sc->sc_obufsize)
1012 cnt = sc->sc_obufsize;
1013
1014 if (sc->sc_methods->ucom_write != NULL)
1015 sc->sc_methods->ucom_write(sc->sc_parent, sc->sc_portno,
1016 ub->ub_data, data, &cnt);
1017 else
1018 memcpy(ub->ub_data, data, cnt);
1019
1020 ub->ub_len = cnt;
1021 ub->ub_index = 0;
1022
1023 SIMPLEQ_INSERT_TAIL(&sc->sc_obuff_full, ub, ub_link);
1024
1025 softint_schedule(sc->sc_si);
1026
1027 out:
1028 splx(s);
1029 }
1030
1031 void
1032 ucomstop(struct tty *tp, int flag)
1033 {
1034 DPRINTF(("ucomstop: flag=%d\n", flag));
1035 #if 0
1036 /*struct ucom_softc *sc =
1037 device_lookup_private(&ucom_cd, UCOMUNIT(dev));*/
1038 int s;
1039
1040 s = spltty();
1041 if (ISSET(tp->t_state, TS_BUSY)) {
1042 DPRINTF(("ucomstop: XXX\n"));
1043 /* sc->sc_tx_stopped = 1; */
1044 if (!ISSET(tp->t_state, TS_TTSTOP))
1045 SET(tp->t_state, TS_FLUSH);
1046 }
1047 splx(s);
1048 #endif
1049 }
1050
1051 static void
1052 ucom_write_status(struct ucom_softc *sc, struct ucom_buffer *ub,
1053 usbd_status err)
1054 {
1055 struct tty *tp = sc->sc_tty;
1056 uint32_t cc = ub->ub_len;
1057
1058 switch (err) {
1059 case USBD_IN_PROGRESS:
1060 ub->ub_index = ub->ub_len;
1061 break;
1062 case USBD_STALLED:
1063 ub->ub_index = 0;
1064 softint_schedule(sc->sc_si);
1065 break;
1066 case USBD_NORMAL_COMPLETION:
1067 usbd_get_xfer_status(ub->ub_xfer, NULL, NULL, &cc, NULL);
1068 #if defined(__NetBSD__) && NRND > 0
1069 rnd_add_uint32(&sc->sc_rndsource, cc);
1070 #endif
1071 /*FALLTHROUGH*/
1072 default:
1073 SIMPLEQ_REMOVE_HEAD(&sc->sc_obuff_full, ub_link);
1074 SIMPLEQ_INSERT_TAIL(&sc->sc_obuff_free, ub, ub_link);
1075 cc -= sc->sc_opkthdrlen;
1076
1077 CLR(tp->t_state, TS_BUSY);
1078 if (ISSET(tp->t_state, TS_FLUSH))
1079 CLR(tp->t_state, TS_FLUSH);
1080 else
1081 ndflush(&tp->t_outq, cc);
1082
1083 if (err != USBD_CANCELLED && err != USBD_IOERROR &&
1084 !sc->sc_dying) {
1085 if ((ub = SIMPLEQ_FIRST(&sc->sc_obuff_full)) != NULL)
1086 ucom_submit_write(sc, ub);
1087
1088 (*tp->t_linesw->l_start)(tp);
1089 }
1090 break;
1091 }
1092 }
1093
1094 /* Call at spltty() */
1095 static void
1096 ucom_submit_write(struct ucom_softc *sc, struct ucom_buffer *ub)
1097 {
1098
1099 usbd_setup_xfer(ub->ub_xfer, sc->sc_bulkout_pipe,
1100 (usbd_private_handle)sc, ub->ub_data, ub->ub_len,
1101 USBD_NO_COPY, USBD_NO_TIMEOUT, ucomwritecb);
1102
1103 ucom_write_status(sc, ub, usbd_transfer(ub->ub_xfer));
1104 }
1105
1106 static void
1107 ucomwritecb(usbd_xfer_handle xfer, usbd_private_handle p, usbd_status status)
1108 {
1109 struct ucom_softc *sc = (struct ucom_softc *)p;
1110 int s;
1111
1112 s = spltty();
1113
1114 ucom_write_status(sc, SIMPLEQ_FIRST(&sc->sc_obuff_full), status);
1115
1116 splx(s);
1117 }
1118
1119 static void
1120 ucom_softintr(void *arg)
1121 {
1122 struct ucom_softc *sc = arg;
1123 struct tty *tp = sc->sc_tty;
1124 struct ucom_buffer *ub;
1125 int s;
1126
1127 if (!ISSET(tp->t_state, TS_ISOPEN))
1128 return;
1129
1130 s = spltty();
1131
1132 ub = SIMPLEQ_FIRST(&sc->sc_obuff_full);
1133
1134 if (ub != NULL && ub->ub_index == 0)
1135 ucom_submit_write(sc, ub);
1136
1137 if (sc->sc_rx_unblock)
1138 ucom_read_complete(sc);
1139
1140 splx(s);
1141 }
1142
1143 static void
1144 ucom_read_complete(struct ucom_softc *sc)
1145 {
1146 int (*rint)(int, struct tty *);
1147 struct ucom_buffer *ub;
1148 struct tty *tp;
1149 int s;
1150
1151 tp = sc->sc_tty;
1152 rint = tp->t_linesw->l_rint;
1153 ub = SIMPLEQ_FIRST(&sc->sc_ibuff_full);
1154
1155 while (ub != NULL && !sc->sc_rx_stopped) {
1156
1157 s = spltty();
1158
1159 while (ub->ub_index < ub->ub_len && !sc->sc_rx_stopped) {
1160 /* Give characters to tty layer. */
1161 if ((*rint)(ub->ub_data[ub->ub_index], tp) == -1) {
1162 /* Overflow: drop remainder */
1163 ub->ub_index = ub->ub_len;
1164 } else
1165 ub->ub_index++;
1166 }
1167
1168 splx(s);
1169
1170 if (ub->ub_index == ub->ub_len) {
1171 SIMPLEQ_REMOVE_HEAD(&sc->sc_ibuff_full, ub_link);
1172
1173 ucomsubmitread(sc, ub);
1174
1175 ub = SIMPLEQ_FIRST(&sc->sc_ibuff_full);
1176 }
1177 }
1178
1179 sc->sc_rx_unblock = (ub != NULL);
1180 }
1181
1182 static usbd_status
1183 ucomsubmitread(struct ucom_softc *sc, struct ucom_buffer *ub)
1184 {
1185 usbd_status err;
1186
1187 usbd_setup_xfer(ub->ub_xfer, sc->sc_bulkin_pipe,
1188 (usbd_private_handle)sc, ub->ub_data, sc->sc_ibufsize,
1189 USBD_SHORT_XFER_OK | USBD_NO_COPY, USBD_NO_TIMEOUT, ucomreadcb);
1190
1191 if ((err = usbd_transfer(ub->ub_xfer)) != USBD_IN_PROGRESS) {
1192 /* XXX: Recover from this, please! */
1193 printf("ucomsubmitread: err=%s\n", usbd_errstr(err));
1194 return (err);
1195 }
1196
1197 SIMPLEQ_INSERT_TAIL(&sc->sc_ibuff_empty, ub, ub_link);
1198
1199 return (USBD_NORMAL_COMPLETION);
1200 }
1201
1202 static void
1203 ucomreadcb(usbd_xfer_handle xfer, usbd_private_handle p, usbd_status status)
1204 {
1205 struct ucom_softc *sc = (struct ucom_softc *)p;
1206 struct tty *tp = sc->sc_tty;
1207 struct ucom_buffer *ub;
1208 u_int32_t cc;
1209 u_char *cp;
1210 int s;
1211
1212 ub = SIMPLEQ_FIRST(&sc->sc_ibuff_empty);
1213 SIMPLEQ_REMOVE_HEAD(&sc->sc_ibuff_empty, ub_link);
1214
1215 if (status == USBD_CANCELLED || status == USBD_IOERROR ||
1216 sc->sc_dying) {
1217 DPRINTF(("ucomreadcb: dying\n"));
1218 ub->ub_index = ub->ub_len = 0;
1219 /* Send something to wake upper layer */
1220 s = spltty();
1221 if (status != USBD_CANCELLED) {
1222 (tp->t_linesw->l_rint)('\n', tp);
1223 mutex_spin_enter(&tty_lock); /* XXX */
1224 ttwakeup(tp);
1225 mutex_spin_exit(&tty_lock); /* XXX */
1226 }
1227 splx(s);
1228 return;
1229 }
1230
1231 if (status == USBD_STALLED) {
1232 usbd_clear_endpoint_stall_async(sc->sc_bulkin_pipe);
1233 ucomsubmitread(sc, ub);
1234 return;
1235 }
1236
1237 if (status != USBD_NORMAL_COMPLETION) {
1238 printf("ucomreadcb: wonky status=%s\n", usbd_errstr(status));
1239 return;
1240 }
1241
1242 usbd_get_xfer_status(xfer, NULL, (void *)&cp, &cc, NULL);
1243
1244 if (cc == 0) {
1245 aprint_normal_dev(sc->sc_dev,
1246 "ucomreadcb: zero length xfer!\n");
1247 }
1248
1249 KDASSERT(cp == ub->ub_data);
1250
1251 #if defined(__NetBSD__) && NRND > 0
1252 rnd_add_uint32(&sc->sc_rndsource, cc);
1253 #endif
1254
1255 if (sc->sc_opening) {
1256 ucomsubmitread(sc, ub);
1257 return;
1258 }
1259
1260 if (sc->sc_methods->ucom_read != NULL) {
1261 sc->sc_methods->ucom_read(sc->sc_parent, sc->sc_portno,
1262 &cp, &cc);
1263 ub->ub_index = (u_int)(cp - ub->ub_data);
1264 } else
1265 ub->ub_index = 0;
1266
1267 ub->ub_len = cc;
1268
1269 SIMPLEQ_INSERT_TAIL(&sc->sc_ibuff_full, ub, ub_link);
1270
1271 ucom_read_complete(sc);
1272 }
1273
1274 static void
1275 ucom_cleanup(struct ucom_softc *sc)
1276 {
1277 struct ucom_buffer *ub;
1278
1279 DPRINTF(("ucom_cleanup: closing pipes\n"));
1280
1281 ucom_shutdown(sc);
1282 if (sc->sc_bulkin_pipe != NULL) {
1283 usbd_abort_pipe(sc->sc_bulkin_pipe);
1284 usbd_close_pipe(sc->sc_bulkin_pipe);
1285 sc->sc_bulkin_pipe = NULL;
1286 }
1287 if (sc->sc_bulkout_pipe != NULL) {
1288 usbd_abort_pipe(sc->sc_bulkout_pipe);
1289 usbd_close_pipe(sc->sc_bulkout_pipe);
1290 sc->sc_bulkout_pipe = NULL;
1291 }
1292 for (ub = &sc->sc_ibuff[0]; ub != &sc->sc_ibuff[UCOM_IN_BUFFS]; ub++) {
1293 if (ub->ub_xfer != NULL) {
1294 usbd_free_xfer(ub->ub_xfer);
1295 ub->ub_xfer = NULL;
1296 ub->ub_data = NULL;
1297 }
1298 }
1299 for (ub = &sc->sc_obuff[0]; ub != &sc->sc_obuff[UCOM_OUT_BUFFS]; ub++){
1300 if (ub->ub_xfer != NULL) {
1301 usbd_free_xfer(ub->ub_xfer);
1302 ub->ub_xfer = NULL;
1303 ub->ub_data = NULL;
1304 }
1305 }
1306 }
1307
1308 #endif /* NUCOM > 0 */
1309
1310 int
1311 ucomprint(void *aux, const char *pnp)
1312 {
1313 struct ucom_attach_args *uca = aux;
1314
1315 if (pnp)
1316 aprint_normal("ucom at %s", pnp);
1317 if (uca->portno != UCOM_UNK_PORTNO)
1318 aprint_normal(" portno %d", uca->portno);
1319 return (UNCONF);
1320 }
1321
1322 int
1323 ucomsubmatch(device_t parent, cfdata_t cf,
1324 const int *ldesc, void *aux)
1325 {
1326 struct ucom_attach_args *uca = aux;
1327
1328 if (uca->portno != UCOM_UNK_PORTNO &&
1329 cf->cf_loc[UCOMBUSCF_PORTNO] != UCOMBUSCF_PORTNO_DEFAULT &&
1330 cf->cf_loc[UCOMBUSCF_PORTNO] != uca->portno)
1331 return (0);
1332 return (config_match(parent, cf, aux));
1333 }
NetBSD on the FriendlyARM MINI2440