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Expand PMF_FN_* macros.
[netbsd-mini2440.git] / dist / ntp / libparse / parsesolaris.c
blobec1c91fd12aeab9a6b3caf50372ea5aaad6e5a4b
1 /* $NetBSD: parsesolaris.c,v 1.2 2003/12/04 16:23:37 drochner Exp $ */
2
3 /*
4 * /src/NTP/ntp4-dev/libparse/parsesolaris.c,v 4.11 2005/04/16 17:32:10 kardel RELEASE_20050508_A
5 *
6 * parsesolaris.c,v 4.11 2005/04/16 17:32:10 kardel RELEASE_20050508_A
7 *
8 * STREAMS module for reference clocks
9 *
10 * Copyright (c) 1995-2005 by Frank Kardel <kardel <AT> ntp.org>
11 * Copyright (c) 1989-1994 by Frank Kardel, Friedrich-Alexander Universität Erlangen-Nürnberg, Germany
12 *
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
15 * are met:
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the author nor the names of its contributors
22 * may be used to endorse or promote products derived from this software
23 * without specific prior written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 * SUCH DAMAGE.
36 *
37 */
38
39 #define _KERNEL /* it is a _KERNEL module */
40
41 #ifndef lint
42 static char rcsid[] = "parsesolaris.c,v 4.11 2005/04/16 17:32:10 kardel RELEASE_20050508_A";
43 #endif
44
45 #include <sys/types.h>
46 #include <sys/conf.h>
47 #include <sys/errno.h>
48 #include <sys/time.h>
49 #include <sys/termios.h>
50 #include <sys/stream.h>
51 #include <sys/strtty.h>
52 #include <sys/stropts.h>
53 #include <sys/modctl.h>
54 #include <sys/ddi.h>
55 #include <sys/sunddi.h>
56 #ifdef __GNUC__ /* makes it compile on Solaris 2.6 - acc doesn't like it -- GREAT! */
57 #include <stdarg.h>
58 #endif
59
60 #include "ntp_fp.h"
61 #include "parse.h"
62 #include <sys/parsestreams.h>
63
64 /*--------------- loadable driver section -----------------------------*/
65
66 static struct streamtab parseinfo;
67
68 static struct fmodsw fmod_templ =
69 {
70 "parse", /* module name */
71 &parseinfo, /* module information */
72 D_NEW|D_MP|D_MTQPAIR, /* exclusive for q pair */
73 /* lock ptr */
74 };
75
76 extern struct mod_ops mod_strmodops;
77
78 static struct modlstrmod modlstrmod =
79 {
80 &mod_strmodops, /* a STREAMS module */
81 "PARSE - NTP reference", /* name this baby - keep room for revision number */
82 &fmod_templ
83 };
84
85 static struct modlinkage modlinkage =
86 {
87 MODREV_1,
88 {
89 &modlstrmod,
90 NULL
91 }
92 };
93
94 /*
95 * module management routines
96 */
97 /*ARGSUSED*/
98 int
99 _init(
100 void
101 )
102 {
103 static char revision[] = "4.6";
104 char *s, *S;
105 char *t;
106
107 #ifndef lint
108 t = rcsid;
109 #endif
110
111 /*
112 * copy RCS revision into Drv_name
113 *
114 * are we forcing RCS here to do things it was not built for ?
115 */
116 s = revision;
117 if (*s == '$')
118 {
119 /*
120 * skip "$Revision: "
121 * if present. - not necessary on a -kv co (cvs export)
122 */
123 while (*s && (*s != ' '))
124 {
125 s++;
126 }
127 if (*s == ' ') s++;
128 }
129
130 t = modlstrmod.strmod_linkinfo;
131 while (*t && (*t != ' '))
132 {
133 t++;
134 }
135 if (*t == ' ') t++;
136
137 S = s;
138 while (*S && (((*S >= '0') && (*S <= '9')) || (*S == '.')))
139 {
140 S++;
141 }
142
143 if (*s && *t && (S > s))
144 {
145 if (strlen(t) >= (S - s))
146 {
147 (void) strncpy(t, s, (unsigned)(S - s));
148 }
149 }
150 return (mod_install(&modlinkage));
151 }
152
153 /*ARGSUSED*/
154 int
155 _info(
156 struct modinfo *modinfop
157 )
158 {
159 return (mod_info(&modlinkage, modinfop));
160 }
161
162 /*ARGSUSED*/
163 int
164 _fini(
165 void
166 )
167 {
168 if (mod_remove(&modlinkage) != DDI_SUCCESS)
169 {
170 return EBUSY;
171 }
172 else
173 return DDI_SUCCESS;
174 }
175
176 /*--------------- stream module definition ----------------------------*/
177
178 static int parseopen P((queue_t *, dev_t *, int, int, cred_t *));
179 static int parseclose P((queue_t *, int));
180 static int parsewput P((queue_t *, mblk_t *));
181 static int parserput P((queue_t *, mblk_t *));
182 static int parsersvc P((queue_t *));
183
184 static struct module_info driverinfo =
185 {
186 0, /* module ID number */
187 fmod_templ.f_name, /* module name - why repeated here ? compat ?*/
188 0, /* minimum accepted packet size */
189 INFPSZ, /* maximum accepted packet size */
190 1, /* high water mark - flow control */
191 0 /* low water mark - flow control */
192 };
193
194 static struct qinit rinit = /* read queue definition */
195 {
196 parserput, /* put procedure */
197 parsersvc, /* service procedure */
198 parseopen, /* open procedure */
199 parseclose, /* close procedure */
200 NULL, /* admin procedure - NOT USED FOR NOW */
201 &driverinfo, /* information structure */
202 NULL /* statistics */
203 };
204
205 static struct qinit winit = /* write queue definition */
206 {
207 parsewput, /* put procedure */
208 NULL, /* service procedure */
209 NULL, /* open procedure */
210 NULL, /* close procedure */
211 NULL, /* admin procedure - NOT USED FOR NOW */
212 &driverinfo, /* information structure */
213 NULL /* statistics */
214 };
215
216 static struct streamtab parseinfo = /* stream info element for parse driver */
217 {
218 &rinit, /* read queue */
219 &winit, /* write queue */
220 NULL, /* read mux */
221 NULL /* write mux */
222 };
223
224 /*--------------- driver data structures ----------------------------*/
225
226 /*
227 * we usually have an inverted signal - but you
228 * can change this to suit your needs
229 */
230 int cd_invert = 1; /* invert status of CD line - PPS support via CD input */
231
232 #ifdef PARSEDEBUG
233 int parsedebug = ~0;
234 #else
235 int parsedebug = 0;
236 #endif
237
238 /*--------------- module implementation -----------------------------*/
239
240 #define TIMEVAL_USADD(_X_, _US_) do {\
241 (_X_)->tv_usec += (_US_);\
242 if ((_X_)->tv_usec >= 1000000)\
243 {\
244 (_X_)->tv_sec++;\
245 (_X_)->tv_usec -= 1000000;\
246 }\
247 } while (0)
248
249 static int init_linemon P((queue_t *));
250 static void close_linemon P((queue_t *, queue_t *));
251
252 #define M_PARSE 0x0001
253 #define M_NOPARSE 0x0002
254
255 void
256 ntp_memset(
257 char *a,
258 int x,
259 int c
260 )
261 {
262 while (c-- > 0)
263 *a++ = x;
264 }
265
266 static void
267 pprintf(
268 int lev,
269 const char *form,
270 ...
271 )
272 {
273 va_list ap;
274
275 va_start(ap, form);
276
277 if (lev & parsedebug)
278 vcmn_err(CE_CONT, (char *)form, ap);
279
280 va_end(ap);
281 }
282
283 static int
284 setup_stream(
285 queue_t *q,
286 int mode
287 )
288 {
289 register mblk_t *mp;
290
291 pprintf(DD_OPEN,"parse: SETUP_STREAM - setting up stream for q=%x\n", q);
292
293 mp = allocb(sizeof(struct stroptions), BPRI_MED);
294 if (mp)
295 {
296 struct stroptions *str = (struct stroptions *)mp->b_wptr;
297
298 str->so_flags = SO_READOPT|SO_HIWAT|SO_LOWAT|SO_ISNTTY;
299 str->so_readopt = (mode == M_PARSE) ? RMSGD : RNORM;
300 str->so_hiwat = (mode == M_PARSE) ? sizeof(parsetime_t) : 256;
301 str->so_lowat = 0;
302 mp->b_datap->db_type = M_SETOPTS;
303 mp->b_wptr += sizeof(struct stroptions);
304 if (!q)
305 panic("NULL q - strange");
306 putnext(q, mp);
307 return putctl1(WR(q)->q_next, M_CTL, (mode == M_PARSE) ? MC_SERVICEIMM :
308 MC_SERVICEDEF);
309 }
310 else
311 {
312 pprintf(DD_OPEN, "parse: setup_stream - FAILED - no MEMORY for allocb\n");
313 return 0;
314 }
315 }
316
317 /*ARGSUSED*/
318 static int
319 parseopen(
320 queue_t *q,
321 dev_t *dev,
322 int flag,
323 int sflag,
324 cred_t *credp
325 )
326 {
327 register parsestream_t *parse;
328 static int notice = 0;
329
330 pprintf(DD_OPEN, "parse: OPEN - q=%x\n", q);
331
332 if (sflag != MODOPEN)
333 { /* open only for modules */
334 pprintf(DD_OPEN, "parse: OPEN - FAILED - not MODOPEN\n");
335 return EIO;
336 }
337
338 if (q->q_ptr != (caddr_t)NULL)
339 {
340 pprintf(DD_OPEN, "parse: OPEN - FAILED - EXCLUSIVE ONLY\n");
341 return EBUSY;
342 }
343
344 q->q_ptr = (caddr_t)kmem_alloc(sizeof(parsestream_t), KM_SLEEP);
345 if (q->q_ptr == (caddr_t)0)
346 {
347 return ENOMEM;
348 }
349
350 pprintf(DD_OPEN, "parse: OPEN - parse area q=%x, q->q_ptr=%x\n", q, q->q_ptr);
351 WR(q)->q_ptr = q->q_ptr;
352 pprintf(DD_OPEN, "parse: OPEN - WQ parse area q=%x, q->q_ptr=%x\n", WR(q), WR(q)->q_ptr);
353
354 parse = (parsestream_t *) q->q_ptr;
355 bzero((caddr_t)parse, sizeof(*parse));
356 parse->parse_queue = q;
357 parse->parse_status = PARSE_ENABLE;
358 parse->parse_ppsclockev.tv.tv_sec = 0;
359 parse->parse_ppsclockev.tv.tv_usec = 0;
360 parse->parse_ppsclockev.serial = 0;
361
362 qprocson(q);
363
364 pprintf(DD_OPEN, "parse: OPEN - initializing io subsystem q=%x\n", q);
365
366 if (!parse_ioinit(&parse->parse_io))
367 {
368 /*
369 * ok guys - beat it
370 */
371 qprocsoff(q);
372
373 kmem_free((caddr_t)parse, sizeof(parsestream_t));
374
375 return EIO;
376 }
377
378 pprintf(DD_OPEN, "parse: OPEN - initializing stream q=%x\n", q);
379
380 if (setup_stream(q, M_PARSE))
381 {
382 (void) init_linemon(q); /* hook up PPS ISR routines if possible */
383 pprintf(DD_OPEN, "parse: OPEN - SUCCEEDED\n");
384
385 /*
386 * I know that you know the delete key, but you didn't write this
387 * code, did you ? - So, keep the message in here.
388 */
389 if (!notice)
390 {
391 cmn_err(CE_CONT, "?%s: Copyright (c) 1993-2005, Frank Kardel\n", modlstrmod.strmod_linkinfo);
392 notice = 1;
393 }
394
395 return 0;
396 }
397 else
398 {
399 qprocsoff(q);
400
401 kmem_free((caddr_t)parse, sizeof(parsestream_t));
402
403 return EIO;
404 }
405 }
406
407 /*ARGSUSED*/
408 static int
409 parseclose(
410 queue_t *q,
411 int flags
412 )
413 {
414 register parsestream_t *parse = (parsestream_t *)q->q_ptr;
415 register unsigned long s;
416
417 pprintf(DD_CLOSE, "parse: CLOSE\n");
418
419 qprocsoff(q);
420
421 s = splhigh();
422
423 if (parse->parse_dqueue)
424 close_linemon(parse->parse_dqueue, q);
425 parse->parse_dqueue = (queue_t *)0;
426
427 (void) splx(s);
428
429 parse_ioend(&parse->parse_io);
430
431 kmem_free((caddr_t)parse, sizeof(parsestream_t));
432
433 q->q_ptr = (caddr_t)NULL;
434 WR(q)->q_ptr = (caddr_t)NULL;
435
436 return 0;
437 }
438
439 /*
440 * move unrecognized stuff upward
441 */
442 static int
443 parsersvc(
444 queue_t *q
445 )
446 {
447 mblk_t *mp;
448
449 while ((mp = getq(q)))
450 {
451 if (canputnext(q) || (mp->b_datap->db_type > QPCTL))
452 {
453 putnext(q, mp);
454 pprintf(DD_RSVC, "parse: RSVC - putnext\n");
455 }
456 else
457 {
458 putbq(q, mp);
459 pprintf(DD_RSVC, "parse: RSVC - flow control wait\n");
460 break;
461 }
462 }
463 return 0;
464 }
465
466 /*
467 * do ioctls and
468 * send stuff down - dont care about
469 * flow control
470 */
471 static int
472 parsewput(
473 queue_t *q,
474 mblk_t *mp
475 )
476 {
477 register int ok = 1;
478 register mblk_t *datap;
479 register struct iocblk *iocp;
480 parsestream_t *parse = (parsestream_t *)q->q_ptr;
481
482 pprintf(DD_WPUT, "parse: parsewput\n");
483
484 switch (mp->b_datap->db_type)
485 {
486 default:
487 putnext(q, mp);
488 break;
489
490 case M_IOCTL:
491 iocp = (struct iocblk *)mp->b_rptr;
492 switch (iocp->ioc_cmd)
493 {
494 default:
495 pprintf(DD_WPUT, "parse: parsewput - forward M_IOCTL\n");
496 putnext(q, mp);
497 break;
498
499 case CIOGETEV:
500 /*
501 * taken from Craig Leres ppsclock module (and modified)
502 */
503 datap = allocb(sizeof(struct ppsclockev), BPRI_MED);
504 if (datap == NULL || mp->b_cont)
505 {
506 mp->b_datap->db_type = M_IOCNAK;
507 iocp->ioc_error = (datap == NULL) ? ENOMEM : EINVAL;
508 if (datap != NULL)
509 freeb(datap);
510 qreply(q, mp);
511 break;
512 }
513
514 mp->b_cont = datap;
515 *(struct ppsclockev *)datap->b_wptr = parse->parse_ppsclockev;
516 datap->b_wptr +=
517 sizeof(struct ppsclockev) / sizeof(*datap->b_wptr);
518 mp->b_datap->db_type = M_IOCACK;
519 iocp->ioc_count = sizeof(struct ppsclockev);
520 qreply(q, mp);
521 break;
522
523 case PARSEIOC_ENABLE:
524 case PARSEIOC_DISABLE:
525 {
526 parse->parse_status = (parse->parse_status & (unsigned)~PARSE_ENABLE) |
527 (iocp->ioc_cmd == PARSEIOC_ENABLE) ?
528 PARSE_ENABLE : 0;
529 if (!setup_stream(RD(q), (parse->parse_status & PARSE_ENABLE) ?
530 M_PARSE : M_NOPARSE))
531 {
532 mp->b_datap->db_type = M_IOCNAK;
533 }
534 else
535 {
536 mp->b_datap->db_type = M_IOCACK;
537 }
538 qreply(q, mp);
539 break;
540 }
541
542 case PARSEIOC_TIMECODE:
543 case PARSEIOC_SETFMT:
544 case PARSEIOC_GETFMT:
545 case PARSEIOC_SETCS:
546 if (iocp->ioc_count == sizeof(parsectl_t))
547 {
548 parsectl_t *dct = (parsectl_t *)mp->b_cont->b_rptr;
549
550 switch (iocp->ioc_cmd)
551 {
552 case PARSEIOC_TIMECODE:
553 pprintf(DD_WPUT, "parse: parsewput - PARSEIOC_TIMECODE\n");
554 ok = parse_timecode(dct, &parse->parse_io);
555 break;
556
557 case PARSEIOC_SETFMT:
558 pprintf(DD_WPUT, "parse: parsewput - PARSEIOC_SETFMT\n");
559 ok = parse_setfmt(dct, &parse->parse_io);
560 break;
561
562 case PARSEIOC_GETFMT:
563 pprintf(DD_WPUT, "parse: parsewput - PARSEIOC_GETFMT\n");
564 ok = parse_getfmt(dct, &parse->parse_io);
565 break;
566
567 case PARSEIOC_SETCS:
568 pprintf(DD_WPUT, "parse: parsewput - PARSEIOC_SETCS\n");
569 ok = parse_setcs(dct, &parse->parse_io);
570 break;
571 }
572 mp->b_datap->db_type = ok ? M_IOCACK : M_IOCNAK;
573 }
574 else
575 {
576 mp->b_datap->db_type = M_IOCNAK;
577 }
578 pprintf(DD_WPUT, "parse: parsewput qreply - %s\n", (mp->b_datap->db_type == M_IOCNAK) ? "M_IOCNAK" : "M_IOCACK");
579 qreply(q, mp);
580 break;
581 }
582 }
583 return 0;
584 }
585
586 /*
587 * read characters from streams buffers
588 */
589 static unsigned long
590 rdchar(
591 mblk_t **mp
592 )
593 {
594 while (*mp != (mblk_t *)NULL)
595 {
596 if ((*mp)->b_wptr - (*mp)->b_rptr)
597 {
598 return (unsigned long)(*(unsigned char *)((*mp)->b_rptr++));
599 }
600 else
601 {
602 register mblk_t *mmp = *mp;
603
604 *mp = (*mp)->b_cont;
605 freeb(mmp);
606 }
607 }
608 return (unsigned long)~0;
609 }
610
611 /*
612 * convert incoming data
613 */
614 static int
615 parserput(
616 queue_t *q,
617 mblk_t *imp
618 )
619 {
620 register unsigned char type;
621 mblk_t *mp = imp;
622
623 switch (type = mp->b_datap->db_type)
624 {
625 default:
626 /*
627 * anything we don't know will be put on queue
628 * the service routine will move it to the next one
629 */
630 pprintf(DD_RPUT, "parse: parserput - forward type 0x%x\n", type);
631
632 if (canputnext(q) || (mp->b_datap->db_type > QPCTL))
633 {
634 putnext(q, mp);
635 }
636 else
637 putq(q, mp);
638 break;
639
640 case M_BREAK:
641 case M_DATA:
642 {
643 register parsestream_t * parse = (parsestream_t *)q->q_ptr;
644 register mblk_t *nmp;
645 register unsigned long ch;
646 timestamp_t ctime;
647 timespec_t hres_time;
648
649 /*
650 * get time on packet delivery
651 */
652 gethrestime(&hres_time);
653 ctime.tv.tv_sec = hres_time.tv_sec;
654 ctime.tv.tv_usec = hres_time.tv_nsec / 1000;
655
656 if (!(parse->parse_status & PARSE_ENABLE))
657 {
658 pprintf(DD_RPUT, "parse: parserput - parser disabled - forward type 0x%x\n", type);
659 if (canputnext(q) || (mp->b_datap->db_type > QPCTL))
660 {
661 putnext(q, mp);
662 }
663 else
664 putq(q, mp);
665 }
666 else
667 {
668 pprintf(DD_RPUT, "parse: parserput - M_%s\n", (type == M_DATA) ? "DATA" : "BREAK");
669 if (type == M_DATA)
670 {
671 /*
672 * parse packet looking for start an end characters
673 */
674 while (mp != (mblk_t *)NULL)
675 {
676 ch = rdchar(&mp);
677 if (ch != ~0 && parse_ioread(&parse->parse_io, (unsigned int)ch, &ctime))
678 {
679 /*
680 * up up and away (hopefully ...)
681 * don't press it if resources are tight or nobody wants it
682 */
683 nmp = (mblk_t *)NULL;
684 if (canputnext(parse->parse_queue) && (nmp = allocb(sizeof(parsetime_t), BPRI_MED)))
685 {
686 bcopy((caddr_t)&parse->parse_io.parse_dtime, (caddr_t)nmp->b_rptr, sizeof(parsetime_t));
687 nmp->b_wptr += sizeof(parsetime_t);
688 putnext(parse->parse_queue, nmp);
689 }
690 else
691 if (nmp) freemsg(nmp);
692 parse_iodone(&parse->parse_io);
693 }
694 }
695 }
696 else
697 {
698 if (parse_ioread(&parse->parse_io, (unsigned int)0, &ctime))
699 {
700 /*
701 * up up and away (hopefully ...)
702 * don't press it if resources are tight or nobody wants it
703 */
704 nmp = (mblk_t *)NULL;
705 if (canputnext(parse->parse_queue) && (nmp = allocb(sizeof(parsetime_t), BPRI_MED)))
706 {
707 bcopy((caddr_t)&parse->parse_io.parse_dtime, (caddr_t)nmp->b_rptr, sizeof(parsetime_t));
708 nmp->b_wptr += sizeof(parsetime_t);
709 putnext(parse->parse_queue, nmp);
710 }
711 else
712 if (nmp) freemsg(nmp);
713 parse_iodone(&parse->parse_io);
714 }
715 freemsg(mp);
716 }
717 break;
718 }
719 }
720
721 /*
722 * CD PPS support for non direct ISR hack
723 */
724 case M_HANGUP:
725 case M_UNHANGUP:
726 {
727 register parsestream_t * parse = (parsestream_t *)q->q_ptr;
728 timestamp_t ctime;
729 timespec_t hres_time;
730 register mblk_t *nmp;
731 register int status = cd_invert ^ (type == M_UNHANGUP);
732
733 gethrestime(&hres_time);
734 ctime.tv.tv_sec = hres_time.tv_sec;
735 ctime.tv.tv_usec = hres_time.tv_nsec / 1000;
736
737 pprintf(DD_RPUT, "parse: parserput - M_%sHANGUP\n", (type == M_HANGUP) ? "" : "UN");
738
739 if ((parse->parse_status & PARSE_ENABLE) &&
740 parse_iopps(&parse->parse_io, status ? SYNC_ONE : SYNC_ZERO, &ctime))
741 {
742 nmp = (mblk_t *)NULL;
743 if (canputnext(parse->parse_queue) && (nmp = allocb(sizeof(parsetime_t), BPRI_MED)))
744 {
745 bcopy((caddr_t)&parse->parse_io.parse_dtime, (caddr_t)nmp->b_rptr, sizeof(parsetime_t));
746 nmp->b_wptr += sizeof(parsetime_t);
747 putnext(parse->parse_queue, nmp);
748 }
749 else
750 if (nmp) freemsg(nmp);
751 parse_iodone(&parse->parse_io);
752 freemsg(mp);
753 }
754 else
755 if (canputnext(q) || (mp->b_datap->db_type > QPCTL))
756 {
757 putnext(q, mp);
758 }
759 else
760 putq(q, mp);
761
762 if (status)
763 {
764 parse->parse_ppsclockev.tv = ctime.tv;
765 ++(parse->parse_ppsclockev.serial);
766 }
767 }
768 }
769 return 0;
770 }
771
772 static int init_zs_linemon P((queue_t *, queue_t *)); /* handle line monitor for "zs" driver */
773 static void close_zs_linemon P((queue_t *, queue_t *));
774
775 /*-------------------- CD isr status monitor ---------------*/
776
777 static int
778 init_linemon(
779 queue_t *q
780 )
781 {
782 register queue_t *dq;
783
784 dq = WR(q);
785 /*
786 * we ARE doing very bad things down here (basically stealing ISR
787 * hooks)
788 *
789 * so we chase down the STREAMS stack searching for the driver
790 * and if this is a known driver we insert our ISR routine for
791 * status changes in to the ExternalStatus handling hook
792 */
793 while (dq->q_next)
794 {
795 dq = dq->q_next; /* skip down to driver */
796 }
797
798 /*
799 * find appropriate driver dependent routine
800 */
801 if (dq->q_qinfo && dq->q_qinfo->qi_minfo)
802 {
803 register char *dname = dq->q_qinfo->qi_minfo->mi_idname;
804
805 pprintf(DD_INSTALL, "init_linemon: driver is \"%s\"\n", dname);
806
807 #ifdef sun
808 if (dname && !strcmp(dname, "zs"))
809 {
810 return init_zs_linemon(dq, q);
811 }
812 else
813 #endif
814 {
815 pprintf(DD_INSTALL, "init_linemon: driver \"%s\" not suitable for CD monitoring\n", dname);
816 return 0;
817 }
818 }
819 pprintf(DD_INSTALL, "init_linemon: cannot find driver\n");
820 return 0;
821 }
822
823 static void
824 close_linemon(
825 queue_t *q,
826 queue_t *my_q
827 )
828 {
829 /*
830 * find appropriate driver dependent routine
831 */
832 if (q->q_qinfo && q->q_qinfo->qi_minfo)
833 {
834 register char *dname = q->q_qinfo->qi_minfo->mi_idname;
835
836 #ifdef sun
837 if (dname && !strcmp(dname, "zs"))
838 {
839 close_zs_linemon(q, my_q);
840 return;
841 }
842 pprintf(DD_INSTALL, "close_linemon: cannot find driver close routine for \"%s\"\n", dname);
843 #endif
844 }
845 pprintf(DD_INSTALL, "close_linemon: cannot find driver name\n");
846 }
847
848 #ifdef sun
849 #include <sys/tty.h>
850 #include <sys/zsdev.h>
851 #include <sys/ser_async.h>
852 #include <sys/ser_zscc.h>
853
854 static void zs_xsisr P((struct zscom *)); /* zs external status interupt handler */
855
856 /*
857 * there should be some docs telling how to get to
858 * sz:zs_usec_delay and zs:initzsops()
859 */
860 #define zs_usec_delay 5
861
862 struct savedzsops
863 {
864 struct zsops zsops;
865 struct zsops *oldzsops;
866 };
867
868 static struct zsops *emergencyzs;
869
870 static int
871 init_zs_linemon(
872 queue_t *q,
873 queue_t *my_q
874 )
875 {
876 register struct zscom *zs;
877 register struct savedzsops *szs;
878 register parsestream_t *parsestream = (parsestream_t *)my_q->q_ptr;
879 /*
880 * we expect the zsaline pointer in the q_data pointer
881 * from there on we insert our on EXTERNAL/STATUS ISR routine
882 * into the interrupt path, before the standard handler
883 */
884 zs = ((struct asyncline *)q->q_ptr)->za_common;
885 if (!zs)
886 {
887 /*
888 * well - not found on startup - just say no (shouldn't happen though)
889 */
890 return 0;
891 }
892 else
893 {
894 /*
895 * we do a direct replacement, in case others fiddle also
896 * if somebody else grabs our hook and we disconnect
897 * we are in DEEP trouble - panic is likely to be next, sorry
898 */
899 szs = (struct savedzsops *) kmem_alloc(sizeof(struct savedzsops), KM_SLEEP);
900
901 if (szs == (struct savedzsops *)0)
902 {
903 pprintf(DD_INSTALL, "init_zs_linemon: CD monitor NOT installed - no memory\n");
904
905 return 0;
906 }
907 else
908 {
909 parsestream->parse_data = (void *)szs;
910
911 mutex_enter(zs->zs_excl);
912
913 parsestream->parse_dqueue = q; /* remember driver */
914
915 szs->zsops = *zs->zs_ops;
916 szs->zsops.zsop_xsint = (void (*) P((struct zscom *)))zs_xsisr; /* place our bastard */
917 szs->oldzsops = zs->zs_ops;
918 emergencyzs = zs->zs_ops;
919
920 zs->zs_ops = &szs->zsops; /* hook it up */
921 /*
922 * XXX: this is usually done via zsopinit()
923 * - have yet to find a way to call that routine
924 */
925 zs->zs_xsint = (void (*) P((struct zscom *)))zs_xsisr;
926
927 mutex_exit(zs->zs_excl);
928
929 pprintf(DD_INSTALL, "init_zs_linemon: CD monitor installed\n");
930
931 return 1;
932 }
933 }
934 }
935
936 /*
937 * unregister our ISR routine - must call under splhigh() (or
938 * whatever block ZS status interrupts)
939 */
940 static void
941 close_zs_linemon(
942 queue_t *q,
943 queue_t *my_q
944 )
945 {
946 register struct zscom *zs;
947 register parsestream_t *parsestream = (parsestream_t *)my_q->q_ptr;
948
949 zs = ((struct asyncline *)q->q_ptr)->za_common;
950 if (!zs)
951 {
952 /*
953 * well - not found on startup - just say no (shouldn't happen though)
954 */
955 return;
956 }
957 else
958 {
959 register struct savedzsops *szs = (struct savedzsops *)parsestream->parse_data;
960
961 mutex_enter(zs->zs_excl);
962
963 zs->zs_ops = szs->oldzsops; /* reset to previous handler functions */
964 /*
965 * XXX: revert xsint (usually done via zsopinit() - have still to find
966 * a way to call that bugger
967 */
968 zs->zs_xsint = zs->zs_ops->zsop_xsint;
969
970 mutex_exit(zs->zs_excl);
971
972 kmem_free((caddr_t)szs, sizeof (struct savedzsops));
973
974 pprintf(DD_INSTALL, "close_zs_linemon: CD monitor deleted\n");
975 return;
976 }
977 }
978
979 #define ZSRR0_IGNORE (ZSRR0_CD|ZSRR0_SYNC|ZSRR0_CTS)
980
981 #define MAXDEPTH 50 /* maximum allowed stream crawl */
982
983 /*
984 * take external status interrupt (only CD interests us)
985 */
986 static void
987 zs_xsisr(
988 struct zscom *zs
989 )
990 {
991 register struct asyncline *za = (struct asyncline *)zs->zs_priv;
992 register queue_t *q;
993 register unsigned char zsstatus;
994 register int loopcheck;
995 register unsigned char cdstate;
996 register const char *dname = "-UNKNOWN-";
997 timespec_t hres_time;
998
999 /*
1000 * pick up current state
1001 */
1002 zsstatus = SCC_READ0();
1003
1004 if (za->za_rr0 ^ (cdstate = zsstatus & ZSRR0_CD))
1005 {
1006 timestamp_t cdevent;
1007 register int status;
1008
1009 /*
1010 * time stamp
1011 */
1012 gethrestime(&hres_time);
1013 cdevent.tv.tv_sec = hres_time.tv_sec;
1014 cdevent.tv.tv_usec = hres_time.tv_nsec / 1000;
1015
1016 q = za->za_ttycommon.t_readq;
1017
1018 /*
1019 * logical state
1020 */
1021 status = cd_invert ? cdstate == 0 : cdstate != 0;
1022
1023 /*
1024 * ok - now the hard part - find ourself
1025 */
1026 loopcheck = MAXDEPTH;
1027
1028 while (q)
1029 {
1030 if (q->q_qinfo && q->q_qinfo->qi_minfo)
1031 {
1032 dname = q->q_qinfo->qi_minfo->mi_idname;
1033
1034 if (!strcmp(dname, parseinfo.st_rdinit->qi_minfo->mi_idname))
1035 {
1036 /*
1037 * back home - phew (hopping along stream queues might
1038 * prove dangerous to your health)
1039 */
1040
1041 if ((((parsestream_t *)q->q_ptr)->parse_status & PARSE_ENABLE) &&
1042 parse_iopps(&((parsestream_t *)q->q_ptr)->parse_io, status ? SYNC_ONE : SYNC_ZERO, &cdevent))
1043 {
1044 /*
1045 * XXX - currently we do not pass up the message, as
1046 * we should.
1047 * for a correct behaviour wee need to block out
1048 * processing until parse_iodone has been posted via
1049 * a softcall-ed routine which does the message pass-up
1050 * right now PPS information relies on input being
1051 * received
1052 */
1053 parse_iodone(&((parsestream_t *)q->q_ptr)->parse_io);
1054 }
1055
1056 if (status)
1057 {
1058 ((parsestream_t *)q->q_ptr)->parse_ppsclockev.tv = cdevent.tv;
1059 ++(((parsestream_t *)q->q_ptr)->parse_ppsclockev.serial);
1060 }
1061
1062 pprintf(DD_ISR, "zs_xsisr: CD event %s has been posted for \"%s\"\n", status ? "ONE" : "ZERO", dname);
1063 break;
1064 }
1065 }
1066
1067 q = q->q_next;
1068
1069 if (!loopcheck--)
1070 {
1071 panic("zs_xsisr: STREAMS Queue corrupted - CD event");
1072 }
1073 }
1074
1075 if (cdstate) /* fake CARRIER status - XXX currently not coordinated */
1076 za->za_flags |= ZAS_CARR_ON;
1077 else
1078 za->za_flags &= ~ZAS_CARR_ON;
1079
1080 /*
1081 * only pretend that CD and ignored transistion (SYNC,CTS)
1082 * have been handled
1083 */
1084 za->za_rr0 = (za->za_rr0 & ~ZSRR0_IGNORE) | (zsstatus & ZSRR0_IGNORE);
1085
1086 if (((za->za_rr0 ^ zsstatus) & ~ZSRR0_IGNORE) == 0)
1087 {
1088 /*
1089 * all done - kill status indication and return
1090 */
1091 SCC_WRITE0(ZSWR0_RESET_STATUS); /* might kill other conditions here */
1092 return;
1093 }
1094 }
1095
1096 pprintf(DD_ISR, "zs_xsisr: non CD event 0x%x for \"%s\"\n",
1097 (za->za_rr0 ^ zsstatus) & ~ZSRR0_CD,dname);
1098 /*
1099 * we are now gathered here to process some unusual external status
1100 * interrupts.
1101 * any CD events have also been handled and shouldn't be processed
1102 * by the original routine (unless we have a VERY busy port pin)
1103 * some initializations are done here, which could have been done before for
1104 * both code paths but have been avioded for minimum path length to
1105 * the uniq_time routine
1106 */
1107 dname = (char *) 0;
1108 q = za->za_ttycommon.t_readq;
1109
1110 loopcheck = MAXDEPTH;
1111
1112 /*
1113 * the real thing for everything else ...
1114 */
1115 while (q)
1116 {
1117 if (q->q_qinfo && q->q_qinfo->qi_minfo)
1118 {
1119 dname = q->q_qinfo->qi_minfo->mi_idname;
1120 if (!strcmp(dname, parseinfo.st_rdinit->qi_minfo->mi_idname))
1121 {
1122 register void (*zsisr) P((struct zscom *));
1123
1124 /*
1125 * back home - phew (hopping along stream queues might
1126 * prove dangerous to your health)
1127 */
1128 if ((zsisr = ((struct savedzsops *)((parsestream_t *)q->q_ptr)->parse_data)->oldzsops->zsop_xsint))
1129 zsisr(zs);
1130 else
1131 panic("zs_xsisr: unable to locate original ISR");
1132
1133 pprintf(DD_ISR, "zs_xsisr: non CD event was processed for \"%s\"\n", dname);
1134 /*
1135 * now back to our program ...
1136 */
1137 return;
1138 }
1139 }
1140
1141 q = q->q_next;
1142
1143 if (!loopcheck--)
1144 {
1145 panic("zs_xsisr: STREAMS Queue corrupted - non CD event");
1146 }
1147 }
1148
1149 /*
1150 * last resort - shouldn't even come here as it indicates
1151 * corrupted TTY structures
1152 */
1153 printf("zs_zsisr: looking for \"%s\" - found \"%s\" - taking EMERGENCY path\n", parseinfo.st_rdinit->qi_minfo->mi_idname, dname ? dname : "-NIL-");
1154
1155 if (emergencyzs && emergencyzs->zsop_xsint)
1156 emergencyzs->zsop_xsint(zs);
1157 else
1158 panic("zs_xsisr: no emergency ISR handler");
1159 }
1160 #endif /* sun */
1161
1162 /*
1163 * History:
1164 *
1165 * parsesolaris.c,v
1166 * Revision 4.11 2005/04/16 17:32:10 kardel
1167 * update copyright
1168 *
1169 * Revision 4.10 2004/11/14 16:06:08 kardel
1170 * update Id tags
1171 *
1172 * Revision 4.9 2004/11/14 15:29:41 kardel
1173 * support PPSAPI, upgrade Copyright to Berkeley style
1174 *
1175 * Revision 4.6 1998/11/15 21:56:08 kardel
1176 * ntp_memset not necessary
1177 *
1178 * Revision 4.5 1998/11/15 21:23:37 kardel
1179 * ntp_memset() replicated in Sun kernel files
1180 *
1181 * Revision 4.4 1998/06/14 21:09:40 kardel
1182 * Sun acc cleanup
1183 *
1184 * Revision 4.3 1998/06/13 12:14:59 kardel
1185 * more prototypes
1186 * fix name clashes
1187 * allow for ansi2knr
1188 *
1189 * Revision 4.2 1998/06/12 15:23:08 kardel
1190 * fix prototypes
1191 * adjust for ansi2knr
1192 *
1193 * Revision 4.1 1998/05/24 09:38:46 kardel
1194 * streams initiated iopps calls (M_xHANGUP) are now consistent with the
1195 * respective calls from zs_xsisr()
1196 * simulation of CARRIER status to avoid unecessary M_xHANGUP messages
1197 *
1198 * Revision 4.0 1998/04/10 19:45:38 kardel
1199 * Start 4.0 release version numbering
1200 *
1201 * from V3 3.28 log info deleted 1998/04/11 kardel
1202 */
NetBSD on the FriendlyARM MINI2440