1278 lines
29 KiB
C
1278 lines
29 KiB
C
/*
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* /src/NTP/REPOSITORY/v3/parse/parsestreams.c,v 3.9 1993/11/05 15:34:55 kardel Exp
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*
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* parsestreams.c,v 3.9 1993/11/05 15:34:55 kardel Exp
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*
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* STREAMS module for reference clocks
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* (SunOS4.x)
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*
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* Copyright (c) 1989,1990,1991,1992,1993
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* Frank Kardel Friedrich-Alexander Universitaet Erlangen-Nuernberg
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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*
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*/
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#ifndef lint
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static char rcsid[] = "parsestreams.c,v 3.9 1993/11/05 15:34:55 kardel Exp";
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#endif
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#include "sys/types.h"
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#include "sys/conf.h"
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#include "sys/buf.h"
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#include "sys/param.h"
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#include "sys/sysmacros.h"
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#include "sys/errno.h"
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#include "sys/time.h"
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#include "sundev/mbvar.h"
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#include "sun/autoconf.h"
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#include "sys/stream.h"
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#include "sys/stropts.h"
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#include "sys/dir.h"
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#include "sys/signal.h"
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#include "sys/termios.h"
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#include "sys/termio.h"
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#include "sys/ttold.h"
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#include "sys/user.h"
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#include "sys/errno.h"
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#include "sys/tty.h"
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#include "machine/cpu.h"
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#ifdef VDDRV
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#include "sun/vddrv.h"
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#endif
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/*
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* no protypes here !
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*/
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#define P(x) ()
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/*
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* use microtime instead of uniqtime if advised to
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*/
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#ifdef MICROTIME
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#define uniqtime microtime
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#endif
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#define HAVE_NO_NICE /* for the NTP headerfiles */
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#include "ntp_fp.h"
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#include "parse.h"
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#include "sys/parsestreams.h"
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#ifdef VDDRV
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static unsigned int parsebusy = 0;
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/*--------------- loadable driver section -----------------------------*/
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extern struct streamtab parseinfo;
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struct vdldrv parsesync_vd =
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{
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VDMAGIC_PSEUDO, /* nothing like a real driver - a STREAMS module */
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"PARSE ", /* name this baby - keep room for revision number */
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};
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/*
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* strings support usually not in kernel
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*/
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static int strlen(s)
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register char *s;
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{
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register int c;
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c = 0;
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if (s)
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{
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while (*s++)
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{
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c++;
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}
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}
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return c;
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}
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static void strncpy(t, s, c)
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register char *t;
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register char *s;
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register int c;
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{
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if (s && t)
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{
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while ((c-- > 0) && (*t++ = *s++))
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;
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}
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}
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static int strcmp(s, t)
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register char *s;
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register char *t;
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{
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register int c = 0;
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if (!s || !t || (s == t))
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{
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return 0;
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}
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while (!(c = *s++ - *t++) && *s && *t)
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/* empty loop */;
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return c;
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}
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static int strncmp(s, t, n)
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register char *s;
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register char *t;
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register int n;
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{
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register int c = 0;
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if (!s || !t || (s == t))
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{
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return 0;
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}
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while (n-- && !(c = *s++ - *t++) && *s && *t)
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/* empty loop */;
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return c;
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}
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/*
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* driver init routine
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* since no mechanism gets us into and out of the fmodsw, we have to
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* do it ourselves
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*/
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/*ARGSUSED*/
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int xxxinit(fc, vdp, vdi, vds)
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unsigned int fc;
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struct vddrv *vdp;
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addr_t vdi;
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struct vdstat *vds;
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{
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extern struct fmodsw fmodsw[];
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extern int fmodcnt;
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struct fmodsw *fm = fmodsw;
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struct fmodsw *fmend = &fmodsw[fmodcnt];
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struct fmodsw *ifm = (struct fmodsw *)0;
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char *mname = parseinfo.st_rdinit->qi_minfo->mi_idname;
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switch (fc)
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{
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case VDLOAD:
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vdp->vdd_vdtab = (struct vdlinkage *)&parsesync_vd;
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/*
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* now, jog along fmodsw scanning for an empty slot
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* and deposit our name there
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*/
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while (fm <= fmend)
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{
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if (!strncmp(fm->f_name, mname, FMNAMESZ))
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{
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printf("vddrinit[%s]: STREAMS module already loaded.\n", mname);
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return(EBUSY);
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}
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else
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if ((ifm == (struct fmodsw *)0) &&
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(fm->f_name[0] == '\0') && (fm->f_str == (struct streamtab *)0))
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{
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/*
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* got one - so move in
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*/
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ifm = fm;
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break;
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}
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fm++;
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}
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if (ifm == (struct fmodsw *)0)
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{
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printf("vddrinit[%s]: no slot free for STREAMS module\n", mname);
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return (ENOSPC);
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}
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else
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{
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static char revision[] = "3.9";
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char *s, *S, *t;
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strncpy(ifm->f_name, mname, FMNAMESZ);
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ifm->f_name[FMNAMESZ] = '\0';
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ifm->f_str = &parseinfo;
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/*
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* copy RCS revision into Drv_name
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*
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* are we forcing RCS here to do things it was not built for ?
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*/
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s = revision;
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if (*s == '$')
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{
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/*
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* skip "$Revision: "
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* if present. - not necessary on a -kv co (cvs export)
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*/
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while (*s && (*s != ' '))
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{
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s++;
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}
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if (*s == ' ') s++;
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}
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t = parsesync_vd.Drv_name;
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while (*t && (*t != ' '))
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{
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t++;
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}
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if (*t == ' ') t++;
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S = s;
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while (*S && (((*S >= '0') && (*S <= '9')) || (*S == '.')))
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{
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S++;
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}
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if (*s && *t && (S > s))
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{
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if (strlen(t) >= (S - s))
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{
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(void) strncpy(t, s, S - s);
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}
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}
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return (0);
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}
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break;
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case VDUNLOAD:
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if (parsebusy > 0)
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{
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printf("vddrinit[%s]: STREAMS module has still %d instances active.\n", mname, parsebusy);
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return (EBUSY);
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}
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else
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{
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while (fm <= fmend)
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{
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if (!strncmp(fm->f_name, mname, FMNAMESZ))
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{
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/*
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* got it - kill entry
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*/
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fm->f_name[0] = '\0';
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fm->f_str = (struct streamtab *)0;
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fm++;
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break;
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}
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fm++;
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}
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if (fm > fmend)
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{
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printf("vddrinit[%s]: cannot find entry for STREAMS module\n", mname);
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return (ENXIO);
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}
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else
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return (0);
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}
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case VDSTAT:
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return (0);
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default:
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return (EIO);
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}
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return EIO;
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}
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#endif
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/*--------------- stream module definition ----------------------------*/
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static int parseopen(), parseclose(), parsewput(), parserput(), parsersvc();
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static struct module_info driverinfo =
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{
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0, /* module ID number */
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"parse", /* module name */
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0, /* minimum accepted packet size */
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INFPSZ, /* maximum accepted packet size */
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1, /* high water mark - flow control */
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0 /* low water mark - flow control */
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};
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static struct qinit rinit = /* read queue definition */
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{
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parserput, /* put procedure */
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parsersvc, /* service procedure */
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parseopen, /* open procedure */
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parseclose, /* close procedure */
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NULL, /* admin procedure - NOT USED FOR NOW */
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&driverinfo, /* information structure */
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NULL /* statistics */
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};
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static struct qinit winit = /* write queue definition */
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{
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parsewput, /* put procedure */
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NULL, /* service procedure */
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NULL, /* open procedure */
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NULL, /* close procedure */
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NULL, /* admin procedure - NOT USED FOR NOW */
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&driverinfo, /* information structure */
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NULL /* statistics */
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};
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struct streamtab parseinfo = /* stream info element for dpr driver */
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{
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&rinit, /* read queue */
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&winit, /* write queue */
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NULL, /* read mux */
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NULL, /* write mux */
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NULL /* module auto push */
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};
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/*--------------- driver data structures ----------------------------*/
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/*
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* we usually have an inverted signal - but you
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* can change this to suit your needs
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*/
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int cd_invert = 1; /* invert status of CD line - PPS support via CD input */
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int parsedebug = ~0;
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extern void uniqtime();
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/*--------------- module implementation -----------------------------*/
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#define TIMEVAL_USADD(_X_, _US_) {\
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(_X_)->tv_usec += (_US_);\
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if ((_X_)->tv_usec >= 1000000)\
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{\
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(_X_)->tv_sec++;\
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(_X_)->tv_usec -= 1000000;\
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}\
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} while (0)
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#if defined(sun4c) && defined(DEBUG_CD)
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#include <sun4c/cpu.h>
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#include <sun4c/auxio.h>
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#define SET_LED(_X_) (((cpu & CPU_ARCH) == SUN4C_ARCH) ? *(u_char *)AUXIO_REG = AUX_MBO|AUX_EJECT|((_X_)?AUX_LED:0) : 0)
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#else
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#define SET_LED(_X_)
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#endif
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static int init_linemon();
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static void close_linemon();
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/*
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* keep here MACHINE AND OS AND ENVIRONMENT DEPENDENT
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* timing constants
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*
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* FOR ABSOLUTE PRECISION YOU NEED TO MEASURE THE TIMING
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* SKEW BETWEEN THE HW-PPS SIGNAL AND KERNEL uniqtime()
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* YOURSELF.
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*
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* YOU MUST BE QUALIFIED APPROPRIATELY FOR THESE TYPE
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* OF HW MANIPULATION !
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*
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* you need an oscilloscope and the permission for HW work
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* in order to figure out these timing constants/variables
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*/
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#ifdef sun
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static unsigned long xsdelay = 10; /* assume an SS2 */
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static unsigned long stdelay = 350;
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struct delays
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{
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unsigned char mask; /* what to check for */
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unsigned char type; /* what to match */
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unsigned long xsdelay; /* external status direct delay in us */
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unsigned long stdelay; /* STREAMS message delay (M_[UN]HANGUP) */
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} isr_delays[] =
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{
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/*
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* WARNING: must still be measured - currently taken from Craig Leres ppsdev
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*/
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#ifdef sun4c
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{CPU_ARCH|CPU_MACH, CPU_SUN4C_50, 10, 350},
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{CPU_ARCH|CPU_MACH, CPU_SUN4C_65, 15, 700},
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{CPU_ARCH|CPU_MACH, CPU_SUN4C_75, 10, 350},
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#endif
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#ifdef sun4m
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{CPU_ARCH|CPU_MACH, CPU_SUN4M_50, 8, 250},
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{CPU_ARCH|CPU_MACH, CPU_SUN4M_690, 8, 250},
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#endif
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{0,}
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};
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void setup_delays()
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{
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register int i;
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for (i = 0; isr_delays[i].mask; i++)
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{
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if ((cpu & isr_delays[i].mask) == isr_delays[i].type)
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{
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xsdelay = isr_delays[i].xsdelay;
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stdelay = isr_delays[i].stdelay;
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return;
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}
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}
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printf("parse: WARNING: PPS kernel fudge factors unknown for this machine (Type 0x%x) - assuming SS2 (Sun4/75)\n", cpu);
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}
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#else
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#define setup_delays() /* empty - no need for clobbering kernel with this */
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static unsigned long xsdelay = 0; /* assume nothing */
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static unsigned long stdelay = 0;
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#endif
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#define M_PARSE 0x0001
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#define M_NOPARSE 0x0002
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static int
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setup_stream(q, mode)
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queue_t *q;
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int mode;
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{
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mblk_t *mp;
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mp = allocb(sizeof(struct stroptions), BPRI_MED);
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if (mp)
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{
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struct stroptions *str = (struct stroptions *)mp->b_rptr;
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str->so_flags = SO_READOPT|SO_HIWAT|SO_LOWAT;
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str->so_readopt = (mode == M_PARSE) ? RMSGD : RNORM;
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str->so_hiwat = (mode == M_PARSE) ? sizeof(parsetime_t) : 256;
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str->so_lowat = 0;
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mp->b_datap->db_type = M_SETOPTS;
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mp->b_wptr += sizeof(struct stroptions);
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putnext(q, mp);
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return putctl1(WR(q)->q_next, M_CTL, (mode == M_PARSE) ? MC_SERVICEIMM :
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MC_SERVICEDEF);
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}
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else
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{
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parseprintf(DD_OPEN,("parse: setup_stream - FAILED - no MEMORY for allocb\n"));
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return 0;
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}
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}
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/*ARGSUSED*/
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static int parseopen(q, dev, flag, sflag)
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queue_t *q;
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dev_t dev;
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int flag;
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int sflag;
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{
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register mblk_t *mp;
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register parsestream_t *parse;
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static int notice = 0;
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parseprintf(DD_OPEN,("parse: OPEN\n"));
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if (sflag != MODOPEN)
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{ /* open only for modules */
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parseprintf(DD_OPEN,("parse: OPEN - FAILED - not MODOPEN\n"));
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return OPENFAIL;
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}
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if (q->q_ptr != (caddr_t)NULL)
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{
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u.u_error = EBUSY;
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parseprintf(DD_OPEN,("parse: OPEN - FAILED - EXCLUSIVE ONLY\n"));
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return OPENFAIL;
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}
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#ifdef VDDRV
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parsebusy++;
|
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#endif
|
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q->q_ptr = (caddr_t)kmem_alloc(sizeof(parsestream_t));
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WR(q)->q_ptr = q->q_ptr;
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parse = (parsestream_t *) q->q_ptr;
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bzero((caddr_t)parse, sizeof(*parse));
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parse->parse_queue = q;
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parse->parse_status = PARSE_ENABLE;
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parse->parse_ppsclockev.tv.tv_sec = 0;
|
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parse->parse_ppsclockev.tv.tv_usec = 0;
|
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parse->parse_ppsclockev.serial = 0;
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|
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if (!parse_ioinit(&parse->parse_io))
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{
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/*
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* ok guys - beat it
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*/
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kmem_free((caddr_t)parse, sizeof(parsestream_t));
|
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#ifdef VDDRV
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parsebusy--;
|
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#endif
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return OPENFAIL;
|
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}
|
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|
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if (setup_stream(q, M_PARSE))
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{
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(void) init_linemon(q); /* hook up PPS ISR routines if possible */
|
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setup_delays();
|
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parseprintf(DD_OPEN,("parse: OPEN - SUCCEEDED\n"));
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|
|
/*
|
|
* I know that you know the delete key, but you didn't write this
|
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* code, did you ? - So, keep the message in here.
|
|
*/
|
|
if (!notice)
|
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{
|
|
printf("%s: Copyright (c) 1991-1993, Frank Kardel\n", parsesync_vd.Drv_name);
|
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notice = 1;
|
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}
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|
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return 1;
|
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}
|
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else
|
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{
|
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#ifdef VDDRV
|
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parsebusy--;
|
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#endif
|
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return OPENFAIL;
|
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}
|
|
}
|
|
|
|
/*ARGSUSED*/
|
|
static int parseclose(q, flags)
|
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queue_t *q;
|
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int flags;
|
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{
|
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register parsestream_t *parse = (parsestream_t *)q->q_ptr;
|
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register unsigned long s;
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|
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parseprintf(DD_CLOSE,("parse: CLOSE\n"));
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|
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s = splhigh();
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|
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if (parse->parse_dqueue)
|
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close_linemon(parse->parse_dqueue, q);
|
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parse->parse_dqueue = (queue_t *)0;
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|
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(void) splx(s);
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|
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parse_ioend(&parse->parse_io);
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|
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kmem_free((caddr_t)parse, sizeof(parsestream_t));
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|
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q->q_ptr = (caddr_t)NULL;
|
|
WR(q)->q_ptr = (caddr_t)NULL;
|
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|
|
#ifdef VDDRV
|
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parsebusy--;
|
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#endif
|
|
}
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|
|
|
/*
|
|
* move unrecognized stuff upward
|
|
*/
|
|
static parsersvc(q)
|
|
queue_t *q;
|
|
{
|
|
mblk_t *mp;
|
|
|
|
while (mp = getq(q))
|
|
{
|
|
if (canput(q->q_next) || (mp->b_datap->db_type > QPCTL))
|
|
{
|
|
putnext(q, mp);
|
|
parseprintf(DD_RSVC,("parse: RSVC - putnext\n"));
|
|
}
|
|
else
|
|
{
|
|
putbq(q, mp);
|
|
parseprintf(DD_RSVC,("parse: RSVC - flow control wait\n"));
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* do ioctls and
|
|
* send stuff down - dont care about
|
|
* flow control
|
|
*/
|
|
static int parsewput(q, mp)
|
|
queue_t *q;
|
|
register mblk_t *mp;
|
|
{
|
|
register int ok = 1;
|
|
register mblk_t *datap;
|
|
register struct iocblk *iocp;
|
|
parsestream_t *parse = (parsestream_t *)q->q_ptr;
|
|
|
|
parseprintf(DD_WPUT,("parse: parsewput\n"));
|
|
|
|
switch (mp->b_datap->db_type)
|
|
{
|
|
default:
|
|
putnext(q, mp);
|
|
break;
|
|
|
|
case M_IOCTL:
|
|
iocp = (struct iocblk *)mp->b_rptr;
|
|
switch (iocp->ioc_cmd)
|
|
{
|
|
default:
|
|
parseprintf(DD_WPUT,("parse: parsewput - forward M_IOCTL\n"));
|
|
putnext(q, mp);
|
|
break;
|
|
|
|
case CIOGETEV:
|
|
/*
|
|
* taken from Craig Leres ppsclock module (and modified)
|
|
*/
|
|
datap = allocb(sizeof(struct ppsclockev), BPRI_MED);
|
|
if (datap == NULL || mp->b_cont)
|
|
{
|
|
mp->b_datap->db_type = M_IOCNAK;
|
|
iocp->ioc_error = (datap == NULL) ? ENOMEM : EINVAL;
|
|
if (datap != NULL)
|
|
freeb(datap);
|
|
qreply(q, mp);
|
|
break;
|
|
}
|
|
|
|
mp->b_cont = datap;
|
|
*(struct ppsclockev *)datap->b_wptr = parse->parse_ppsclockev;
|
|
datap->b_wptr +=
|
|
sizeof(struct ppsclockev) / sizeof(*datap->b_wptr);
|
|
mp->b_datap->db_type = M_IOCACK;
|
|
iocp->ioc_count = sizeof(struct ppsclockev);
|
|
qreply(q, mp);
|
|
break;
|
|
|
|
case PARSEIOC_ENABLE:
|
|
case PARSEIOC_DISABLE:
|
|
{
|
|
parse->parse_status = (parse->parse_status & ~PARSE_ENABLE) |
|
|
(iocp->ioc_cmd == PARSEIOC_ENABLE) ?
|
|
PARSE_ENABLE : 0;
|
|
if (!setup_stream(RD(q), (parse->parse_status & PARSE_ENABLE) ?
|
|
M_PARSE : M_NOPARSE))
|
|
{
|
|
mp->b_datap->db_type = M_IOCNAK;
|
|
}
|
|
else
|
|
{
|
|
mp->b_datap->db_type = M_IOCACK;
|
|
}
|
|
qreply(q, mp);
|
|
break;
|
|
}
|
|
|
|
case PARSEIOC_SETSTAT:
|
|
case PARSEIOC_GETSTAT:
|
|
case PARSEIOC_TIMECODE:
|
|
case PARSEIOC_SETFMT:
|
|
case PARSEIOC_GETFMT:
|
|
case PARSEIOC_SETCS:
|
|
if (iocp->ioc_count == sizeof(parsectl_t))
|
|
{
|
|
parsectl_t *dct = (parsectl_t *)mp->b_cont->b_rptr;
|
|
|
|
switch (iocp->ioc_cmd)
|
|
{
|
|
case PARSEIOC_GETSTAT:
|
|
parseprintf(DD_WPUT,("parse: parsewput - PARSEIOC_GETSTAT\n"));
|
|
ok = parse_getstat(dct, &parse->parse_io);
|
|
break;
|
|
|
|
case PARSEIOC_SETSTAT:
|
|
parseprintf(DD_WPUT,("parse: parsewput - PARSEIOC_SETSTAT\n"));
|
|
ok = parse_setstat(dct, &parse->parse_io);
|
|
break;
|
|
|
|
case PARSEIOC_TIMECODE:
|
|
parseprintf(DD_WPUT,("parse: parsewput - PARSEIOC_TIMECODE\n"));
|
|
ok = parse_timecode(dct, &parse->parse_io);
|
|
break;
|
|
|
|
case PARSEIOC_SETFMT:
|
|
parseprintf(DD_WPUT,("parse: parsewput - PARSEIOC_SETFMT\n"));
|
|
ok = parse_setfmt(dct, &parse->parse_io);
|
|
break;
|
|
|
|
case PARSEIOC_GETFMT:
|
|
parseprintf(DD_WPUT,("parse: parsewput - PARSEIOC_GETFMT\n"));
|
|
ok = parse_getfmt(dct, &parse->parse_io);
|
|
break;
|
|
|
|
case PARSEIOC_SETCS:
|
|
parseprintf(DD_WPUT,("parse: parsewput - PARSEIOC_SETCS\n"));
|
|
ok = parse_setcs(dct, &parse->parse_io);
|
|
break;
|
|
}
|
|
mp->b_datap->db_type = ok ? M_IOCACK : M_IOCNAK;
|
|
}
|
|
else
|
|
{
|
|
mp->b_datap->db_type = M_IOCNAK;
|
|
}
|
|
parseprintf(DD_WPUT,("parse: parsewput qreply - %s\n", (mp->b_datap->db_type == M_IOCNAK) ? "M_IOCNAK" : "M_IOCACK"));
|
|
qreply(q, mp);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* read characters from streams buffers
|
|
*/
|
|
static unsigned long rdchar(mp)
|
|
register mblk_t **mp;
|
|
{
|
|
while (*mp != (mblk_t *)NULL)
|
|
{
|
|
if ((*mp)->b_wptr - (*mp)->b_rptr)
|
|
{
|
|
return (unsigned long)(*(unsigned char *)((*mp)->b_rptr++));
|
|
}
|
|
else
|
|
{
|
|
register mblk_t *mmp = *mp;
|
|
|
|
*mp = (*mp)->b_cont;
|
|
freeb(mmp);
|
|
}
|
|
}
|
|
return ~0;
|
|
}
|
|
|
|
/*
|
|
* convert incoming data
|
|
*/
|
|
static int parserput(q, mp)
|
|
queue_t *q;
|
|
mblk_t *mp;
|
|
{
|
|
unsigned char type;
|
|
|
|
switch (type = mp->b_datap->db_type)
|
|
{
|
|
default:
|
|
/*
|
|
* anything we don't know will be put on queue
|
|
* the service routine will move it to the next one
|
|
*/
|
|
parseprintf(DD_RPUT,("parse: parserput - forward type 0x%x\n", type));
|
|
if (canput(q->q_next) || (mp->b_datap->db_type > QPCTL))
|
|
{
|
|
putnext(q, mp);
|
|
}
|
|
else
|
|
putq(q, mp);
|
|
break;
|
|
|
|
case M_BREAK:
|
|
case M_DATA:
|
|
{
|
|
register parsestream_t * parse = (parsestream_t *)q->q_ptr;
|
|
register mblk_t *nmp;
|
|
register unsigned long ch;
|
|
timestamp_t ctime;
|
|
|
|
/*
|
|
* get time on packet delivery
|
|
*/
|
|
uniqtime(&ctime.tv);
|
|
|
|
if (!(parse->parse_status & PARSE_ENABLE))
|
|
{
|
|
parseprintf(DD_RPUT,("parse: parserput - parser disabled - forward type 0x%x\n", type));
|
|
if (canput(q->q_next) || (mp->b_datap->db_type > QPCTL))
|
|
{
|
|
putnext(q, mp);
|
|
}
|
|
else
|
|
putq(q, mp);
|
|
}
|
|
else
|
|
{
|
|
parseprintf(DD_RPUT,("parse: parserput - M_%s\n", (type == M_DATA) ? "DATA" : "BREAK"));
|
|
|
|
if (type == M_DATA)
|
|
{
|
|
/*
|
|
* parse packet looking for start an end characters
|
|
*/
|
|
while (mp != (mblk_t *)NULL)
|
|
{
|
|
ch = rdchar(&mp);
|
|
if (ch != ~0 && parse_ioread(&parse->parse_io, (char)ch, &ctime))
|
|
{
|
|
/*
|
|
* up up and away (hopefully ...)
|
|
* don't press it if resources are tight or nobody wants it
|
|
*/
|
|
nmp = (mblk_t *)NULL;
|
|
if (canput(parse->parse_queue->q_next) && (nmp = allocb(sizeof(parsetime_t), BPRI_MED)))
|
|
{
|
|
bcopy((caddr_t)&parse->parse_io.parse_dtime, (caddr_t)nmp->b_rptr, sizeof(parsetime_t));
|
|
nmp->b_wptr += sizeof(parsetime_t);
|
|
putnext(parse->parse_queue, nmp);
|
|
}
|
|
else
|
|
if (nmp) freemsg(nmp);
|
|
parse_iodone(&parse->parse_io);
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (parse_ioread(&parse->parse_io, (char)0, &ctime))
|
|
{
|
|
/*
|
|
* up up and away (hopefully ...)
|
|
* don't press it if resources are tight or nobody wants it
|
|
*/
|
|
nmp = (mblk_t *)NULL;
|
|
if (canput(parse->parse_queue->q_next) && (nmp = allocb(sizeof(parsetime_t), BPRI_MED)))
|
|
{
|
|
bcopy((caddr_t)&parse->parse_io.parse_dtime, (caddr_t)nmp->b_rptr, sizeof(parsetime_t));
|
|
nmp->b_wptr += sizeof(parsetime_t);
|
|
putnext(parse->parse_queue, nmp);
|
|
}
|
|
else
|
|
if (nmp) freemsg(nmp);
|
|
parse_iodone(&parse->parse_io);
|
|
}
|
|
freemsg(mp);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* CD PPS support for non direct ISR hack
|
|
*/
|
|
case M_HANGUP:
|
|
case M_UNHANGUP:
|
|
{
|
|
register parsestream_t * parse = (parsestream_t *)q->q_ptr;
|
|
timestamp_t ctime;
|
|
register mblk_t *nmp;
|
|
register int status = cd_invert ^ (type == M_HANGUP);
|
|
|
|
SET_LED(status);
|
|
|
|
uniqtime(&ctime.tv);
|
|
|
|
TIMEVAL_USADD(&ctime.tv, stdelay);
|
|
|
|
parseprintf(DD_RPUT,("parse: parserput - M_%sHANGUP\n", (type == M_HANGUP) ? "" : "UN"));
|
|
|
|
if ((parse->parse_status & PARSE_ENABLE) &&
|
|
parse_iopps(&parse->parse_io, status ? SYNC_ONE : SYNC_ZERO, &ctime))
|
|
{
|
|
nmp = (mblk_t *)NULL;
|
|
if (canput(parse->parse_queue->q_next) && (nmp = allocb(sizeof(parsetime_t), BPRI_MED)))
|
|
{
|
|
bcopy((caddr_t)&parse->parse_io.parse_dtime, (caddr_t)nmp->b_rptr, sizeof(parsetime_t));
|
|
nmp->b_wptr += sizeof(parsetime_t);
|
|
putnext(parse->parse_queue, nmp);
|
|
}
|
|
else
|
|
if (nmp) freemsg(nmp);
|
|
parse_iodone(&parse->parse_io);
|
|
}
|
|
|
|
if (status)
|
|
{
|
|
parse->parse_ppsclockev.tv = ctime.tv;
|
|
++(parse->parse_ppsclockev.serial);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static int init_zs_linemon(); /* handle line monitor for "zs" driver */
|
|
static void close_zs_linemon();
|
|
static void zs_xsisr(); /* zs external status interupt handler */
|
|
|
|
/*-------------------- CD isr status monitor ---------------*/
|
|
|
|
static int init_linemon(q)
|
|
register queue_t *q;
|
|
{
|
|
register queue_t *dq;
|
|
|
|
dq = WR(q);
|
|
/*
|
|
* we ARE doing very bad things down here (basically stealing ISR
|
|
* hooks)
|
|
*
|
|
* so we chase down the STREAMS stack searching for the driver
|
|
* and if this is a known driver we insert our ISR routine for
|
|
* status changes in to the ExternalStatus handling hook
|
|
*/
|
|
while (dq->q_next)
|
|
{
|
|
dq = dq->q_next; /* skip down to driver */
|
|
}
|
|
|
|
/*
|
|
* find appropriate driver dependent routine
|
|
*/
|
|
if (dq->q_qinfo && dq->q_qinfo->qi_minfo)
|
|
{
|
|
register char *dname = dq->q_qinfo->qi_minfo->mi_idname;
|
|
|
|
parseprintf(DD_INSTALL, ("init_linemon: driver is \"%s\"\n", dname));
|
|
|
|
#ifdef sun
|
|
if (dname && !strcmp(dname, "zs"))
|
|
{
|
|
return init_zs_linemon(dq, q);
|
|
}
|
|
else
|
|
#endif
|
|
{
|
|
parseprintf(DD_INSTALL, ("init_linemon: driver \"%s\" not suitable for CD monitoring\n", dname));
|
|
return 0;
|
|
}
|
|
}
|
|
parseprintf(DD_INSTALL, ("init_linemon: cannot find driver\n"));
|
|
return 0;
|
|
}
|
|
|
|
static void close_linemon(q, my_q)
|
|
register queue_t *q;
|
|
register queue_t *my_q;
|
|
{
|
|
/*
|
|
* find appropriate driver dependent routine
|
|
*/
|
|
if (q->q_qinfo && q->q_qinfo->qi_minfo)
|
|
{
|
|
register char *dname = q->q_qinfo->qi_minfo->mi_idname;
|
|
|
|
#ifdef sun
|
|
if (dname && !strcmp(dname, "zs"))
|
|
{
|
|
close_zs_linemon(q, my_q);
|
|
return;
|
|
}
|
|
parseprintf(DD_INSTALL, ("close_linemon: cannot find driver close routine for \"%s\"\n", dname));
|
|
#endif
|
|
}
|
|
parseprintf(DD_INSTALL, ("close_linemon: cannot find driver name\n"));
|
|
}
|
|
|
|
#ifdef sun
|
|
#include <sundev/zsreg.h>
|
|
#include <sundev/zscom.h>
|
|
#include <sundev/zsvar.h>
|
|
|
|
struct savedzsops
|
|
{
|
|
struct zsops zsops;
|
|
struct zsops *oldzsops;
|
|
};
|
|
|
|
struct zsops *emergencyzs;
|
|
|
|
static int init_zs_linemon(q, my_q)
|
|
register queue_t *q;
|
|
register queue_t *my_q;
|
|
{
|
|
register struct zscom *zs;
|
|
register struct savedzsops *szs;
|
|
register parsestream_t *parsestream = (parsestream_t *)my_q->q_ptr;
|
|
/*
|
|
* we expect the zsaline pointer in the q_data pointer
|
|
* from there on we insert our on EXTERNAL/STATUS ISR routine
|
|
* into the interrupt path, before the standard handler
|
|
*/
|
|
zs = ((struct zsaline *)q->q_ptr)->za_common;
|
|
if (!zs)
|
|
{
|
|
/*
|
|
* well - not found on startup - just say no (shouldn't happen though)
|
|
*/
|
|
return 0;
|
|
}
|
|
else
|
|
{
|
|
unsigned long s;
|
|
|
|
/*
|
|
* we do a direct replacement, in case others fiddle also
|
|
* if somebody else grabs our hook and we disconnect
|
|
* we are in DEEP trouble - panic is likely to be next, sorry
|
|
*/
|
|
szs = (struct savedzsops *) kmem_alloc(sizeof(struct savedzsops));
|
|
|
|
parsestream->parse_data = (void *)szs;
|
|
|
|
s = splhigh();
|
|
|
|
parsestream->parse_dqueue = q; /* remember driver */
|
|
|
|
szs->zsops = *zs->zs_ops;
|
|
szs->zsops.zsop_xsint = (int (*)())zs_xsisr; /* place our bastard */
|
|
szs->oldzsops = zs->zs_ops;
|
|
emergencyzs = zs->zs_ops;
|
|
|
|
zsopinit(zs, &szs->zsops); /* hook it up */
|
|
|
|
(void) splx(s);
|
|
|
|
parseprintf(DD_INSTALL, ("init_zs_linemon: CD monitor installed\n"));
|
|
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* unregister our ISR routine - must call under splhigh()
|
|
*/
|
|
static void close_zs_linemon(q, my_q)
|
|
register queue_t *q;
|
|
register queue_t *my_q;
|
|
{
|
|
register struct zscom *zs;
|
|
register parsestream_t *parsestream = (parsestream_t *)my_q->q_ptr;
|
|
|
|
zs = ((struct zsaline *)q->q_ptr)->za_common;
|
|
if (!zs)
|
|
{
|
|
/*
|
|
* well - not found on startup - just say no (shouldn't happen though)
|
|
*/
|
|
return;
|
|
}
|
|
else
|
|
{
|
|
register struct savedzsops *szs = (struct savedzsops *)parsestream->parse_data;
|
|
|
|
zsopinit(zs, szs->oldzsops); /* reset to previous handler functions */
|
|
|
|
kmem_free((caddr_t)szs, sizeof (struct savedzsops));
|
|
|
|
parseprintf(DD_INSTALL, ("close_zs_linemon: CD monitor deleted\n"));
|
|
return;
|
|
}
|
|
}
|
|
|
|
#define MAXDEPTH 50 /* maximum allowed stream crawl */
|
|
|
|
/*
|
|
* take external status interrupt (only CD interests us)
|
|
*/
|
|
static void zs_xsisr(zs)
|
|
register struct zscom *zs;
|
|
{
|
|
register struct zsaline *za = (struct zsaline *)zs->zs_priv;
|
|
register struct zscc_device *zsaddr = zs->zs_addr;
|
|
register queue_t *q;
|
|
register unsigned char zsstatus;
|
|
register int loopcheck;
|
|
register unsigned char cdstate;
|
|
register char *dname;
|
|
|
|
/*
|
|
* pick up current state
|
|
*/
|
|
zsstatus = zsaddr->zscc_control;
|
|
|
|
if (za->za_rr0 ^ (cdstate = zsstatus & ZSRR0_CD))
|
|
{
|
|
timestamp_t cdevent;
|
|
register int status;
|
|
|
|
/*
|
|
* CONDITIONAL external measurement support
|
|
*/
|
|
SET_LED(cdstate); /*
|
|
* inconsistent with upper SET_LED, but this
|
|
* is for oscilloscope business anyway and we
|
|
* are just interested in edge delays in the
|
|
* lower us range
|
|
*/
|
|
|
|
/*
|
|
* time stamp
|
|
*/
|
|
uniqtime(&cdevent.tv);
|
|
|
|
TIMEVAL_USADD(&cdevent.tv, xsdelay);
|
|
|
|
q = za->za_ttycommon.t_readq;
|
|
|
|
/*
|
|
* logical state
|
|
*/
|
|
status = cd_invert ? cdstate == 0 : cdstate != 0;
|
|
|
|
/*
|
|
* ok - now the hard part - find ourself
|
|
*/
|
|
loopcheck = MAXDEPTH;
|
|
|
|
while (q)
|
|
{
|
|
if (q->q_qinfo && q->q_qinfo->qi_minfo)
|
|
{
|
|
dname = q->q_qinfo->qi_minfo->mi_idname;
|
|
|
|
if (!strcmp(dname, parseinfo.st_rdinit->qi_minfo->mi_idname))
|
|
{
|
|
/*
|
|
* back home - phew (hopping along stream queues might
|
|
* prove dangerous to your health)
|
|
*/
|
|
|
|
if ((((parsestream_t *)q->q_ptr)->parse_status & PARSE_ENABLE) &&
|
|
parse_iopps(&((parsestream_t *)q->q_ptr)->parse_io, status ? SYNC_ONE : SYNC_ZERO, &cdevent))
|
|
{
|
|
/*
|
|
* XXX - currently we do not pass up the message, as
|
|
* we should.
|
|
* for a correct behaviour wee need to block out
|
|
* processing until parse_iodone has been posted via
|
|
* a softcall-ed routine which does the message pass-up
|
|
* right now PPS information relies on input being
|
|
* received
|
|
*/
|
|
parse_iodone(&((parsestream_t *)q->q_ptr)->parse_io);
|
|
}
|
|
|
|
if (status)
|
|
{
|
|
((parsestream_t *)q->q_ptr)->parse_ppsclockev.tv = cdevent.tv;
|
|
++(((parsestream_t *)q->q_ptr)->parse_ppsclockev.serial);
|
|
}
|
|
|
|
parseprintf(DD_ISR, ("zs_xsisr: CD event %s has been posted for \"%s\"\n", status ? "ONE" : "ZERO", dname));
|
|
break;
|
|
}
|
|
}
|
|
|
|
q = q->q_next;
|
|
|
|
if (!loopcheck--)
|
|
{
|
|
panic("zs_xsisr: STREAMS Queue corrupted - CD event");
|
|
}
|
|
}
|
|
|
|
/*
|
|
* only pretend that CD has been handled
|
|
*/
|
|
za->za_rr0 = za->za_rr0 & ~ZSRR0_CD | zsstatus & ZSRR0_CD;
|
|
ZSDELAY(2);
|
|
|
|
if (!((za->za_rr0 ^ zsstatus) & ~ZSRR0_CD))
|
|
{
|
|
/*
|
|
* all done - kill status indication and return
|
|
*/
|
|
zsaddr->zscc_control = ZSWR0_RESET_STATUS; /* might kill other conditions here */
|
|
return;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* we are now gathered here to process some unusual external status
|
|
* interrupts.
|
|
* any CD events have also been handled and shouldn't be processed
|
|
* by the original routine (unless we have a VERY busy port pin)
|
|
* some initializations are done here, which could have been done before for
|
|
* both code paths but have been avioded for minimum path length to
|
|
* the uniq_time routine
|
|
*/
|
|
dname = (char *) 0;
|
|
q = za->za_ttycommon.t_readq;
|
|
|
|
loopcheck = MAXDEPTH;
|
|
|
|
/*
|
|
* the real thing for everything else ...
|
|
*/
|
|
while (q)
|
|
{
|
|
if (q->q_qinfo && q->q_qinfo->qi_minfo)
|
|
{
|
|
dname = q->q_qinfo->qi_minfo->mi_idname;
|
|
if (!strcmp(dname, parseinfo.st_rdinit->qi_minfo->mi_idname))
|
|
{
|
|
register int (*zsisr)();
|
|
|
|
/*
|
|
* back home - phew (hopping along stream queues might
|
|
* prove dangerous to your health)
|
|
*/
|
|
if (zsisr = ((struct savedzsops *)((parsestream_t *)q->q_ptr)->parse_data)->oldzsops->zsop_xsint)
|
|
(void)zsisr(zs);
|
|
else
|
|
panic("zs_xsisr: unable to locate original ISR");
|
|
|
|
parseprintf(DD_ISR, ("zs_xsisr: non CD event was processed for \"%s\"\n", dname));
|
|
/*
|
|
* now back to our program ...
|
|
*/
|
|
return;
|
|
}
|
|
}
|
|
|
|
q = q->q_next;
|
|
|
|
if (!loopcheck--)
|
|
{
|
|
panic("zs_xsisr: STREAMS Queue corrupted - non CD event");
|
|
}
|
|
}
|
|
|
|
/*
|
|
* last resort - shouldn't even come here as it indicates
|
|
* corrupted TTY structures
|
|
*/
|
|
printf("zs_zsisr: looking for \"%s\" - found \"%s\" - taking EMERGENCY path\n", parseinfo.st_rdinit->qi_minfo->mi_idname, dname ? dname : "-NIL-");
|
|
|
|
if (emergencyzs && emergencyzs->zsop_xsint)
|
|
emergencyzs->zsop_xsint(zs);
|
|
else
|
|
panic("zs_xsisr: no emergency ISR handler");
|
|
}
|
|
#endif /* sun */
|
|
|
|
/*
|
|
* History:
|
|
*
|
|
* parsestreams.c,v
|
|
* Revision 3.9 1993/11/05 15:34:55 kardel
|
|
* shut up nice feature detection
|
|
*
|
|
* Revision 3.8 1993/10/22 14:27:56 kardel
|
|
* Oct. 22nd 1993 reconcilation
|
|
*
|
|
* Revision 3.7 1993/10/10 18:13:53 kardel
|
|
* Makefile reorganisation, file relocation
|
|
*
|
|
* Revision 3.6 1993/10/09 15:01:18 kardel
|
|
* file structure unified
|
|
*
|
|
* Revision 3.5 1993/10/04 07:59:31 kardel
|
|
* Well, at least we should know that a the tv_usec field should be in the range 0..999999
|
|
*
|
|
* Revision 3.4 1993/09/26 23:41:33 kardel
|
|
* new parse driver logic
|
|
*
|
|
* Revision 3.3 1993/09/11 00:38:34 kardel
|
|
* LINEMON must also cover M_[UN]HANGUP handling
|
|
*
|
|
* Revision 3.2 1993/07/06 10:02:56 kardel
|
|
* DCF77 driver goes generic...
|
|
*
|
|
*/
|