1 /*-
2 * Copyright (C) 2003,2004
3 * Hidetoshi Shimokawa. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 *
16 * This product includes software developed by Hidetoshi Shimokawa.
17 *
18 * 4. Neither the name of the author nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 *
34 * $FreeBSD$
35 */
36
37 #include <sys/param.h>
38 #if __FreeBSD_version >= 502122
39 #include <sys/kdb.h>
40 #include <gdb/gdb.h>
41 #endif
42 #include <sys/kernel.h>
43 #include <sys/module.h>
44 #include <sys/systm.h>
45 #include <sys/types.h>
46 #include <sys/conf.h>
47 #include <sys/cons.h>
48 #include <sys/consio.h>
49 #include <sys/tty.h>
50 #include <sys/malloc.h>
51 #include <sys/proc.h>
52 #include <sys/ucred.h>
53
54 #include <machine/bus.h>
55
56 #ifdef __DragonFly__
57 #include "dcons.h"
58 #include "dcons_os.h"
59 #else
60 #include <dev/dcons/dcons.h>
61 #include <dev/dcons/dcons_os.h>
62 #endif
63
64 #include <ddb/ddb.h>
65 #include <sys/reboot.h>
66
67 #include <sys/sysctl.h>
68
69 #include <vm/vm.h>
70 #include <vm/vm_param.h>
71 #include <vm/pmap.h>
72
73 #include "opt_ddb.h"
74 #include "opt_comconsole.h"
75 #include "opt_dcons.h"
76
77 #ifndef DCONS_POLL_HZ
78 #define DCONS_POLL_HZ 100
79 #endif
80
81 #ifndef DCONS_BUF_SIZE
82 #define DCONS_BUF_SIZE (16*1024)
83 #endif
84
85 #ifndef DCONS_FORCE_CONSOLE
86 #define DCONS_FORCE_CONSOLE 0 /* Mostly for FreeBSD-4/DragonFly */
87 #endif
88
89 #ifndef DCONS_FORCE_GDB
90 #define DCONS_FORCE_GDB 1
91 #endif
92
93 #if __FreeBSD_version >= 500101
94 #define CONS_NODEV 1
95 #if __FreeBSD_version < 502122
96 static struct consdev gdbconsdev;
97 #endif
98 #endif
99
100 static d_open_t dcons_open;
101 static d_close_t dcons_close;
102 #if defined(__DragonFly__) || __FreeBSD_version < 500104
103 static d_ioctl_t dcons_ioctl;
104 #endif
105
106 static struct cdevsw dcons_cdevsw = {
107 #ifdef __DragonFly__
108 #define CDEV_MAJOR 184
109 "dcons", CDEV_MAJOR, D_TTY, NULL, 0,
110 dcons_open, dcons_close, ttyread, ttywrite, dcons_ioctl,
111 ttypoll, nommap, nostrategy, nodump, nopsize,
112 #elif __FreeBSD_version >= 500104
113 .d_version = D_VERSION,
114 .d_open = dcons_open,
115 .d_close = dcons_close,
116 .d_name = "dcons",
117 .d_flags = D_TTY | D_NEEDGIANT,
118 #else
119 #define CDEV_MAJOR 184
120 /* open */ dcons_open,
121 /* close */ dcons_close,
122 /* read */ ttyread,
123 /* write */ ttywrite,
124 /* ioctl */ dcons_ioctl,
125 /* poll */ ttypoll,
126 /* mmap */ nommap,
127 /* strategy */ nostrategy,
128 /* name */ "dcons",
129 /* major */ CDEV_MAJOR,
130 /* dump */ nodump,
131 /* psize */ nopsize,
132 /* flags */ D_TTY,
133 #endif
134 };
135
136 #ifndef KLD_MODULE
137 static char bssbuf[DCONS_BUF_SIZE]; /* buf in bss */
138 #endif
139
140 /* global data */
141 static struct dcons_global dg;
142 struct dcons_global *dcons_conf;
143 static int poll_hz = DCONS_POLL_HZ;
144
145 static struct dcons_softc sc[DCONS_NPORT];
146
147 SYSCTL_NODE(_kern, OID_AUTO, dcons, CTLFLAG_RD, 0, "Dumb Console");
148 SYSCTL_INT(_kern_dcons, OID_AUTO, poll_hz, CTLFLAG_RW, &poll_hz, 0,
149 "dcons polling rate");
150
151 static int drv_init = 0;
152 static struct callout dcons_callout;
153 struct dcons_buf *dcons_buf; /* for local dconschat */
154
155 #ifdef __DragonFly__
156 #define DEV dev_t
157 #define THREAD d_thread_t
158 #elif __FreeBSD_version < 500000
159 #define DEV dev_t
160 #define THREAD struct proc
161 #else
162 #define DEV struct cdev *
163 #define THREAD struct thread
164 #endif
165
166
167 static void dcons_tty_start(struct tty *);
168 static int dcons_tty_param(struct tty *, struct termios *);
169 static void dcons_timeout(void *);
170 static int dcons_drv_init(int);
171
172 static cn_probe_t dcons_cnprobe;
173 static cn_init_t dcons_cninit;
174 static cn_getc_t dcons_cngetc;
175 static cn_checkc_t dcons_cncheckc;
176 static cn_putc_t dcons_cnputc;
177
178 CONS_DRIVER(dcons, dcons_cnprobe, dcons_cninit, NULL, dcons_cngetc,
179 dcons_cncheckc, dcons_cnputc, NULL);
180
181 #if __FreeBSD_version >= 502122
182 static gdb_probe_f dcons_dbg_probe;
183 static gdb_init_f dcons_dbg_init;
184 static gdb_term_f dcons_dbg_term;
185 static gdb_getc_f dcons_dbg_getc;
186 static gdb_checkc_f dcons_dbg_checkc;
187 static gdb_putc_f dcons_dbg_putc;
188
189 GDB_DBGPORT(dcons, dcons_dbg_probe, dcons_dbg_init, dcons_dbg_term,
190 dcons_dbg_checkc, dcons_dbg_getc, dcons_dbg_putc);
191
192 extern struct gdb_dbgport *gdb_cur;
193 #endif
194
195 #if (KDB || DDB) && ALT_BREAK_TO_DEBUGGER
196 static int
197 dcons_check_break(struct dcons_softc *dc, int c)
198 {
199 if (c < 0)
200 return (c);
201
202 #if __FreeBSD_version >= 502122
203 if (kdb_alt_break(c, &dc->brk_state)) {
204 if ((dc->flags & DC_GDB) != 0) {
205 if (gdb_cur == &dcons_gdb_dbgport) {
206 kdb_dbbe_select("gdb");
207 breakpoint();
208 }
209 } else
210 breakpoint();
211 }
212 #else
213 switch (dc->brk_state) {
214 case STATE1:
215 if (c == KEY_TILDE)
216 dc->brk_state = STATE2;
217 else
218 dc->brk_state = STATE0;
219 break;
220 case STATE2:
221 dc->brk_state = STATE0;
222 if (c == KEY_CTRLB) {
223 #if DCONS_FORCE_GDB
224 if (dc->flags & DC_GDB)
225 boothowto |= RB_GDB;
226 #endif
227 breakpoint();
228 }
229 }
230 if (c == KEY_CR)
231 dc->brk_state = STATE1;
232 #endif
233 return (c);
234 }
235 #else
236 #define dcons_check_break(dc, c) (c)
237 #endif
238
239 static int
240 dcons_os_checkc(struct dcons_softc *dc)
241 {
242 int c;
243
244 if (dg.dma_tag != NULL)
245 bus_dmamap_sync(dg.dma_tag, dg.dma_map, BUS_DMASYNC_POSTREAD);
246
247 c = dcons_check_break(dc, dcons_checkc(dc));
248
249 if (dg.dma_tag != NULL)
250 bus_dmamap_sync(dg.dma_tag, dg.dma_map, BUS_DMASYNC_PREREAD);
251
252 return (c);
253 }
254
255 static int
256 dcons_os_getc(struct dcons_softc *dc)
257 {
258 int c;
259
260 while ((c = dcons_os_checkc(dc)) == -1);
261
262 return (c & 0xff);
263 }
264
265 static void
266 dcons_os_putc(struct dcons_softc *dc, int c)
267 {
268 if (dg.dma_tag != NULL)
269 bus_dmamap_sync(dg.dma_tag, dg.dma_map, BUS_DMASYNC_POSTWRITE);
270
271 dcons_putc(dc, c);
272
273 if (dg.dma_tag != NULL)
274 bus_dmamap_sync(dg.dma_tag, dg.dma_map, BUS_DMASYNC_PREWRITE);
275 }
276 static int
277 dcons_open(DEV dev, int flag, int mode, THREAD *td)
278 {
279 struct tty *tp;
280 int unit, error, s;
281
282 unit = minor(dev);
283 if (unit != 0)
284 return (ENXIO);
285
286 tp = dev->si_tty = ttymalloc(dev->si_tty);
287 tp->t_oproc = dcons_tty_start;
288 tp->t_param = dcons_tty_param;
289 tp->t_stop = nottystop;
290 tp->t_dev = dev;
291
292 error = 0;
293
294 s = spltty();
295 if ((tp->t_state & TS_ISOPEN) == 0) {
296 tp->t_state |= TS_CARR_ON;
297 ttychars(tp);
298 tp->t_iflag = TTYDEF_IFLAG;
299 tp->t_oflag = TTYDEF_OFLAG;
300 tp->t_cflag = TTYDEF_CFLAG|CLOCAL;
301 tp->t_lflag = TTYDEF_LFLAG;
302 tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED;
303 ttsetwater(tp);
304 } else if ((tp->t_state & TS_XCLUDE) && suser(td)) {
305 splx(s);
306 return (EBUSY);
307 }
308 splx(s);
309
310 #if __FreeBSD_version < 502113
311 error = (*linesw[tp->t_line].l_open)(dev, tp);
312 #else
313 error = ttyld_open(tp, dev);
314 #endif
315
316 return (error);
317 }
318
319 static int
320 dcons_close(DEV dev, int flag, int mode, THREAD *td)
321 {
322 int unit;
323 struct tty *tp;
324
325 unit = minor(dev);
326 if (unit != 0)
327 return (ENXIO);
328
329 tp = dev->si_tty;
330 if (tp->t_state & TS_ISOPEN) {
331 #if __FreeBSD_version < 502113
332 (*linesw[tp->t_line].l_close)(tp, flag);
333 ttyclose(tp);
334 #else
335 ttyld_close(tp, flag);
336 tty_close(tp);
337 #endif
338 }
339
340 return (0);
341 }
342
343 #if defined(__DragonFly__) || __FreeBSD_version < 500104
344 static int
345 dcons_ioctl(DEV dev, u_long cmd, caddr_t data, int flag, THREAD *td)
346 {
347 int unit;
348 struct tty *tp;
349 int error;
350
351 unit = minor(dev);
352 if (unit != 0)
353 return (ENXIO);
354
355 tp = dev->si_tty;
356 error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data, flag, td);
357 if (error != ENOIOCTL)
358 return (error);
359
360 error = ttioctl(tp, cmd, data, flag);
361 if (error != ENOIOCTL)
362 return (error);
363
364 return (ENOTTY);
365 }
366 #endif
367
368 static int
369 dcons_tty_param(struct tty *tp, struct termios *t)
370 {
371 tp->t_ispeed = t->c_ispeed;
372 tp->t_ospeed = t->c_ospeed;
373 tp->t_cflag = t->c_cflag;
374 return 0;
375 }
376
377 static void
378 dcons_tty_start(struct tty *tp)
379 {
380 struct dcons_softc *dc;
381 int s;
382
383 dc = (struct dcons_softc *)tp->t_dev->si_drv1;
384 s = spltty();
385 if (tp->t_state & (TS_TIMEOUT | TS_TTSTOP)) {
386 ttwwakeup(tp);
387 return;
388 }
389
390 tp->t_state |= TS_BUSY;
391 while (tp->t_outq.c_cc != 0)
392 dcons_os_putc(dc, getc(&tp->t_outq));
393 tp->t_state &= ~TS_BUSY;
394
395 ttwwakeup(tp);
396 splx(s);
397 }
398
399 static void
400 dcons_timeout(void *v)
401 {
402 struct tty *tp;
403 struct dcons_softc *dc;
404 int i, c, polltime;
405
406 for (i = 0; i < DCONS_NPORT; i ++) {
407 dc = &sc[i];
408 tp = ((DEV)dc->dev)->si_tty;
409 while ((c = dcons_os_checkc(dc)) != -1)
410 if (tp->t_state & TS_ISOPEN)
411 #if __FreeBSD_version < 502113
412 (*linesw[tp->t_line].l_rint)(c, tp);
413 #else
414 ttyld_rint(tp, c);
415 #endif
416 }
417 polltime = hz / poll_hz;
418 if (polltime < 1)
419 polltime = 1;
420 callout_reset(&dcons_callout, polltime, dcons_timeout, tp);
421 }
422
423 static void
424 dcons_cnprobe(struct consdev *cp)
425 {
426 #ifdef __DragonFly__
427 cp->cn_dev = make_dev(&dcons_cdevsw, DCONS_CON,
428 UID_ROOT, GID_WHEEL, 0600, "dcons");
429 #elif __FreeBSD_version >= 501109
430 sprintf(cp->cn_name, "dcons");
431 #else
432 cp->cn_dev = makedev(CDEV_MAJOR, DCONS_CON);
433 #endif
434 #if DCONS_FORCE_CONSOLE
435 cp->cn_pri = CN_REMOTE;
436 #else
437 cp->cn_pri = CN_NORMAL;
438 #endif
439 }
440
441 static void
442 dcons_cninit(struct consdev *cp)
443 {
444 dcons_drv_init(0);
445 #if CONS_NODEV
446 cp->cn_arg
447 #else
448 cp->cn_dev->si_drv1
449 #endif
450 = (void *)&sc[DCONS_CON]; /* share port0 with unit0 */
451 }
452
453 #if CONS_NODEV
454 static int
455 dcons_cngetc(struct consdev *cp)
456 {
457 struct dcons_softc *dc = (struct dcons_softc *)cp->cn_arg;
458 return (dcons_os_getc(dc));
459 }
460 static int
461 dcons_cncheckc(struct consdev *cp)
462 {
463 struct dcons_softc *dc = (struct dcons_softc *)cp->cn_arg;
464 return (dcons_os_checkc(dc));
465 }
466 static void
467 dcons_cnputc(struct consdev *cp, int c)
468 {
469 struct dcons_softc *dc = (struct dcons_softc *)cp->cn_arg;
470 dcons_os_putc(dc, c);
471 }
472 #else
473 static int
474 dcons_cngetc(DEV dev)
475 {
476 struct dcons_softc *dc = (struct dcons_softc *)dev->si_drv1;
477 return (dcons_os_getc(dc));
478 }
479 static int
480 dcons_cncheckc(DEV dev)
481 {
482 struct dcons_softc *dc = (struct dcons_softc *)dev->si_drv1;
483 return (dcons_os_checkc(dc));
484 }
485 static void
486 dcons_cnputc(DEV dev, int c)
487 {
488 struct dcons_softc *dc = (struct dcons_softc *)dev->si_drv1;
489 dcons_os_putc(dc, c);
490 }
491 #endif
492
493 static int
494 dcons_drv_init(int stage)
495 {
496 #if defined(__i386__) || defined(__amd64__)
497 quad_t addr, size;
498 #endif
499
500 if (drv_init)
501 return(drv_init);
502
503 drv_init = -1;
504
505 bzero(&dg, sizeof(dg));
506 dcons_conf = &dg;
507 dg.cdev = &dcons_consdev;
508 dg.buf = NULL;
509 dg.size = DCONS_BUF_SIZE;
510
511 #if defined(__i386__) || defined(__amd64__)
512 if (getenv_quad("dcons.addr", &addr) > 0 &&
513 getenv_quad("dcons.size", &size) > 0) {
514 #ifdef __i386__
515 vm_paddr_t pa;
516 /*
517 * Allow read/write access to dcons buffer.
518 */
519 for (pa = trunc_page(addr); pa < addr + size; pa += PAGE_SIZE)
520 *vtopte(KERNBASE + pa) |= PG_RW;
521 invltlb();
522 #endif
523 /* XXX P to V */
524 dg.buf = (struct dcons_buf *)(vm_offset_t)(KERNBASE + addr);
525 dg.size = size;
526 if (dcons_load_buffer(dg.buf, dg.size, sc) < 0)
527 dg.buf = NULL;
528 }
529 #endif
530 if (dg.buf != NULL)
531 goto ok;
532
533 #ifndef KLD_MODULE
534 if (stage == 0) { /* XXX or cold */
535 /*
536 * DCONS_FORCE_CONSOLE == 1 and statically linked.
537 * called from cninit(). can't use contigmalloc yet .
538 */
539 dg.buf = (struct dcons_buf *) bssbuf;
540 dcons_init(dg.buf, dg.size, sc);
541 } else
542 #endif
543 {
544 /*
545 * DCONS_FORCE_CONSOLE == 0 or kernel module case.
546 * if the module is loaded after boot,
547 * bssbuf could be non-continuous.
548 */
549 dg.buf = (struct dcons_buf *) contigmalloc(dg.size,
550 M_DEVBUF, 0, 0x10000, 0xffffffff, PAGE_SIZE, 0ul);
551 dcons_init(dg.buf, dg.size, sc);
552 }
553
554 ok:
555 dcons_buf = dg.buf;
556
557 #if __FreeBSD_version < 502122
558 #if DDB && DCONS_FORCE_GDB
559 #if CONS_NODEV
560 gdbconsdev.cn_arg = (void *)&sc[DCONS_GDB];
561 #if __FreeBSD_version >= 501109
562 sprintf(gdbconsdev.cn_name, "dgdb");
563 #endif
564 gdb_arg = &gdbconsdev;
565 #elif defined(__DragonFly__)
566 gdbdev = make_dev(&dcons_cdevsw, DCONS_GDB,
567 UID_ROOT, GID_WHEEL, 0600, "dgdb");
568 #else
569 gdbdev = makedev(CDEV_MAJOR, DCONS_GDB);
570 #endif
571 gdb_getc = dcons_cngetc;
572 gdb_putc = dcons_cnputc;
573 #endif
574 #endif
575 drv_init = 1;
576
577 return 0;
578 }
579
580
581 static int
582 dcons_attach_port(int port, char *name, int flags)
583 {
584 struct dcons_softc *dc;
585 struct tty *tp;
586 DEV dev;
587
588 dc = &sc[port];
589 dc->flags = flags;
590 dev = make_dev(&dcons_cdevsw, port,
591 UID_ROOT, GID_WHEEL, 0600, name);
592 dc->dev = (void *)dev;
593 tp = ttymalloc(NULL);
594
595 dev->si_drv1 = (void *)dc;
596 dev->si_tty = tp;
597
598 tp->t_oproc = dcons_tty_start;
599 tp->t_param = dcons_tty_param;
600 tp->t_stop = nottystop;
601 tp->t_dev = dc->dev;
602
603 return(0);
604 }
605
606 static int
607 dcons_attach(void)
608 {
609 int polltime;
610
611 #ifdef __DragonFly__
612 cdevsw_add(&dcons_cdevsw, -1, 0);
613 #endif
614 dcons_attach_port(DCONS_CON, "dcons", 0);
615 dcons_attach_port(DCONS_GDB, "dgdb", DC_GDB);
616 #if __FreeBSD_version < 500000
617 callout_init(&dcons_callout);
618 #else
619 callout_init(&dcons_callout, 0);
620 #endif
621 polltime = hz / poll_hz;
622 if (polltime < 1)
623 polltime = 1;
624 callout_reset(&dcons_callout, polltime, dcons_timeout, NULL);
625 return(0);
626 }
627
628 static int
629 dcons_detach(int port)
630 {
631 struct tty *tp;
632 struct dcons_softc *dc;
633
634 dc = &sc[port];
635
636 tp = ((DEV)dc->dev)->si_tty;
637
638 if (tp->t_state & TS_ISOPEN) {
639 printf("dcons: still opened\n");
640 #if __FreeBSD_version < 502113
641 (*linesw[tp->t_line].l_close)(tp, 0);
642 tp->t_gen++;
643 ttyclose(tp);
644 ttwakeup(tp);
645 ttwwakeup(tp);
646 #else
647 ttyld_close(tp, 0);
648 tty_close(tp);
649 #endif
650 }
651 /* XXX
652 * must wait until all device are closed.
653 */
654 #ifdef __DragonFly__
655 tsleep((void *)dc, 0, "dcodtc", hz/4);
656 #else
657 tsleep((void *)dc, PWAIT, "dcodtc", hz/4);
658 #endif
659 destroy_dev(dc->dev);
660
661 return(0);
662 }
663
664
665 /* cnXXX works only for FreeBSD-5 */
666 static int
667 dcons_modevent(module_t mode, int type, void *data)
668 {
669 int err = 0, ret;
670
671 switch (type) {
672 case MOD_LOAD:
673 ret = dcons_drv_init(1);
674 dcons_attach();
675 #if __FreeBSD_version >= 500000
676 if (ret == 0) {
677 dcons_cnprobe(&dcons_consdev);
678 dcons_cninit(&dcons_consdev);
679 cnadd(&dcons_consdev);
680 }
681 #endif
682 break;
683 case MOD_UNLOAD:
684 printf("dcons: unload\n");
685 callout_stop(&dcons_callout);
686 #if __FreeBSD_version < 502122
687 #if DDB && DCONS_FORCE_GDB
688 #if CONS_NODEV
689 gdb_arg = NULL;
690 #else
691 gdbdev = NULL;
692 #endif
693 #endif
694 #endif
695 #if __FreeBSD_version >= 500000
696 cnremove(&dcons_consdev);
697 #endif
698 dcons_detach(DCONS_CON);
699 dcons_detach(DCONS_GDB);
700 dg.buf->magic = 0;
701
702 contigfree(dg.buf, DCONS_BUF_SIZE, M_DEVBUF);
703
704 break;
705 case MOD_SHUTDOWN:
706 dg.buf->magic = 0;
707 break;
708 default:
709 err = EOPNOTSUPP;
710 break;
711 }
712 return(err);
713 }
714
715 #if __FreeBSD_version >= 502122
716 /* Debugger interface */
717
718 static int
719 dcons_dbg_probe(void)
720 {
721 return(DCONS_FORCE_GDB);
722 }
723
724 static void
725 dcons_dbg_init(void)
726 {
727 }
728
729 static void
730 dcons_dbg_term(void)
731 {
732 }
733
734 static void
735 dcons_dbg_putc(int c)
736 {
737 struct dcons_softc *dc = &sc[DCONS_GDB];
738 dcons_os_putc(dc, c);
739 }
740
741 static int
742 dcons_dbg_checkc(void)
743 {
744 struct dcons_softc *dc = &sc[DCONS_GDB];
745 return (dcons_os_checkc(dc));
746 }
747
748 static int
749 dcons_dbg_getc(void)
750 {
751 struct dcons_softc *dc = &sc[DCONS_GDB];
752 return (dcons_os_getc(dc));
753 }
754 #endif
755
756 DEV_MODULE(dcons, dcons_modevent, NULL);
757 MODULE_VERSION(dcons, DCONS_VERSION);
Cache object: 9785b80a9f7bbbeaa0749bc793755b80
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