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- /*
- * Copyright (c) 1982, 1990 The Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)nhpib.c 7.2 (Berkeley) 12/16/90
- */
-
- /*
- * Internal/98624 HPIB driver
- */
-
- #include "sys/param.h"
- #include "../dev/nhpibreg.h"
- #include "hpibvar.h"
-
- nhpibinit(unit)
- {
- register struct hpib_softc *hs = &hpib_softc[unit];
- register struct nhpibdevice *hd = (struct nhpibdevice *)hs->sc_addr;
- extern int internalhpib;
-
- if ((int)hd == internalhpib) {
- hs->sc_type = HPIBA;
- hs->sc_ba = HPIBA_BA;
- }
- else if (hd->hpib_cid == HPIBB) {
- hs->sc_type = HPIBB;
- hs->sc_ba = hd->hpib_csa & CSA_BA;
- }
- else
- return(0);
- nhpibreset(unit);
- return(1);
- }
-
- nhpibreset(unit)
- {
- register struct hpib_softc *hs = &hpib_softc[unit];
- register struct nhpibdevice *hd;
-
- hd = (struct nhpibdevice *)hs->sc_addr;
- hd->hpib_acr = AUX_SSWRST;
- hd->hpib_ar = hs->sc_ba;
- hd->hpib_lim = 0;
- hd->hpib_mim = 0;
- hd->hpib_acr = AUX_CDAI;
- hd->hpib_acr = AUX_CSHDW;
- hd->hpib_acr = AUX_SSTD1;
- hd->hpib_acr = AUX_SVSTD1;
- hd->hpib_acr = AUX_CPP;
- hd->hpib_acr = AUX_CHDFA;
- hd->hpib_acr = AUX_CHDFE;
- hd->hpib_acr = AUX_RHDF;
- hd->hpib_acr = AUX_CSWRST;
- hd->hpib_acr = AUX_TCA;
- hd->hpib_acr = AUX_CSRE;
- hd->hpib_acr = AUX_SSIC;
- DELAY(100);
- hd->hpib_acr = AUX_CSIC;
- hd->hpib_acr = AUX_SSRE;
- hd->hpib_data = C_DCL;
- DELAY(100000);
- }
-
- nhpibsend(unit, slave, sec, buf, cnt)
- register char *buf;
- register int cnt;
- {
- register struct hpib_softc *hs = &hpib_softc[unit];
- register struct nhpibdevice *hd;
- register int origcnt = cnt;
-
- hd = (struct nhpibdevice *)hs->sc_addr;
- hd->hpib_acr = AUX_TCA;
- hd->hpib_data = C_UNL;
- nhpibowait(hd);
- hd->hpib_data = C_TAG + hs->sc_ba;
- hd->hpib_acr = AUX_STON;
- nhpibowait(hd);
- hd->hpib_data = C_LAG + slave;
- nhpibowait(hd);
- if (sec != -1) {
- hd->hpib_data = C_SCG + sec;
- nhpibowait(hd);
- }
- hd->hpib_acr = AUX_GTS;
- if (cnt) {
- while (--cnt) {
- hd->hpib_data = *buf++;
- if (nhpibowait(hd) < 0)
- break;
- }
- hd->hpib_acr = AUX_EOI;
- hd->hpib_data = *buf;
- if (nhpibowait(hd) < 0)
- cnt++;
- hd->hpib_acr = AUX_TCA;
- }
- return(origcnt - cnt);
- }
-
- nhpibrecv(unit, slave, sec, buf, cnt)
- register char *buf;
- register int cnt;
- {
- register struct hpib_softc *hs = &hpib_softc[unit];
- register struct nhpibdevice *hd;
- register int origcnt = cnt;
-
- hd = (struct nhpibdevice *)hs->sc_addr;
- hd->hpib_acr = AUX_TCA;
- hd->hpib_data = C_UNL;
- nhpibowait(hd);
- hd->hpib_data = C_LAG + hs->sc_ba;
- hd->hpib_acr = AUX_SLON;
- nhpibowait(hd);
- hd->hpib_data = C_TAG + slave;
- nhpibowait(hd);
- if (sec != -1) {
- hd->hpib_data = C_SCG + sec;
- nhpibowait(hd);
- }
- hd->hpib_acr = AUX_RHDF;
- hd->hpib_acr = AUX_GTS;
- if (cnt) {
- while (--cnt >= 0) {
- if (nhpibiwait(hd) < 0)
- break;
- *buf++ = hd->hpib_data;
- }
- cnt++;
- hd->hpib_acr = AUX_TCA;
- }
- return(origcnt - cnt);
- }
-
- nhpibppoll(unit)
- register int unit;
- {
- register struct hpib_softc *hs = &hpib_softc[unit];
- register struct nhpibdevice *hd;
- register int ppoll;
-
- hd = (struct nhpibdevice *)hs->sc_addr;
- hd->hpib_acr = AUX_SPP;
- DELAY(25);
- ppoll = hd->hpib_cpt;
- hd->hpib_acr = AUX_CPP;
- return(ppoll);
- }
-
- nhpibowait(hd)
- register struct nhpibdevice *hd;
- {
- register int timo = 100000;
-
- while ((hd->hpib_mis & MIS_BO) == 0 && --timo)
- ;
- if (timo == 0)
- return(-1);
- return(0);
- }
-
- nhpibiwait(hd)
- register struct nhpibdevice *hd;
- {
- register int timo = 100000;
-
- while ((hd->hpib_mis & MIS_BI) == 0 && --timo)
- ;
- if (timo == 0)
- return(-1);
- return(0);
- }
-