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nhpib.c revision 1.5.4.1
      1  1.5.4.1   rpaulo /*	$NetBSD: nhpib.c,v 1.5.4.1 2006/09/09 02:39:18 rpaulo Exp $	*/
      2      1.1  thorpej 
      3      1.1  thorpej /*
      4      1.1  thorpej  * Copyright (c) 1982, 1990, 1993
      5      1.1  thorpej  *	The Regents of the University of California.  All rights reserved.
      6      1.1  thorpej  *
      7      1.1  thorpej  * Redistribution and use in source and binary forms, with or without
      8      1.1  thorpej  * modification, are permitted provided that the following conditions
      9      1.1  thorpej  * are met:
     10      1.1  thorpej  * 1. Redistributions of source code must retain the above copyright
     11      1.1  thorpej  *    notice, this list of conditions and the following disclaimer.
     12      1.1  thorpej  * 2. Redistributions in binary form must reproduce the above copyright
     13      1.1  thorpej  *    notice, this list of conditions and the following disclaimer in the
     14      1.1  thorpej  *    documentation and/or other materials provided with the distribution.
     15      1.2      agc  * 3. Neither the name of the University nor the names of its contributors
     16      1.1  thorpej  *    may be used to endorse or promote products derived from this software
     17      1.1  thorpej  *    without specific prior written permission.
     18      1.1  thorpej  *
     19      1.1  thorpej  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     20      1.1  thorpej  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     21      1.1  thorpej  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     22      1.1  thorpej  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     23      1.1  thorpej  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     24      1.1  thorpej  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     25      1.1  thorpej  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     26      1.1  thorpej  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     27      1.1  thorpej  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     28      1.1  thorpej  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     29      1.1  thorpej  * SUCH DAMAGE.
     30      1.1  thorpej  *
     31      1.1  thorpej  *	@(#)nhpib.c	8.1 (Berkeley) 6/10/93
     32      1.1  thorpej  */
     33      1.1  thorpej 
     34      1.1  thorpej /*
     35      1.1  thorpej  * Internal/98624 HPIB driver
     36      1.1  thorpej  */
     37      1.1  thorpej 
     38      1.1  thorpej #include <sys/param.h>
     39      1.1  thorpej 
     40      1.1  thorpej #include <hp300/dev/nhpibreg.h>
     41      1.1  thorpej 
     42      1.1  thorpej #include <hp300/stand/common/hpibvar.h>
     43      1.1  thorpej #include <hp300/stand/common/samachdep.h>
     44      1.1  thorpej 
     45      1.3  tsutsui static int nhpibiwait(struct nhpibdevice *);
     46      1.3  tsutsui static int nhpibowait(struct nhpibdevice *);
     47      1.3  tsutsui 
     48      1.3  tsutsui int
     49      1.4  tsutsui nhpibinit(int unit)
     50      1.1  thorpej {
     51      1.3  tsutsui 	struct hpib_softc *hs = &hpib_softc[unit];
     52      1.3  tsutsui 	struct nhpibdevice *hd = (void *)hs->sc_addr;
     53      1.1  thorpej 
     54      1.1  thorpej 	if ((int)hd == internalhpib) {
     55      1.1  thorpej 		hs->sc_type = HPIBA;
     56      1.1  thorpej 		hs->sc_ba = HPIBA_BA;
     57      1.1  thorpej 	}
     58      1.1  thorpej 	else if (hd->hpib_cid == HPIBB) {
     59      1.1  thorpej 		hs->sc_type = HPIBB;
     60      1.1  thorpej 		hs->sc_ba = hd->hpib_csa & CSA_BA;
     61      1.1  thorpej 	}
     62      1.1  thorpej 	else
     63      1.3  tsutsui 		return 0;
     64      1.1  thorpej 	nhpibreset(unit);
     65      1.3  tsutsui 	return 1;
     66      1.1  thorpej }
     67      1.1  thorpej 
     68      1.3  tsutsui void
     69      1.4  tsutsui nhpibreset(int unit)
     70      1.1  thorpej {
     71      1.3  tsutsui 	struct hpib_softc *hs = &hpib_softc[unit];
     72      1.3  tsutsui 	struct nhpibdevice *hd;
     73      1.1  thorpej 
     74      1.3  tsutsui 	hd = (void *)hs->sc_addr;
     75      1.1  thorpej 	hd->hpib_acr = AUX_SSWRST;
     76      1.1  thorpej 	hd->hpib_ar = hs->sc_ba;
     77      1.1  thorpej 	hd->hpib_lim = 0;
     78      1.1  thorpej 	hd->hpib_mim = 0;
     79      1.1  thorpej 	hd->hpib_acr = AUX_CDAI;
     80      1.1  thorpej 	hd->hpib_acr = AUX_CSHDW;
     81      1.1  thorpej 	hd->hpib_acr = AUX_SSTD1;
     82      1.1  thorpej 	hd->hpib_acr = AUX_SVSTD1;
     83      1.1  thorpej 	hd->hpib_acr = AUX_CPP;
     84      1.1  thorpej 	hd->hpib_acr = AUX_CHDFA;
     85      1.1  thorpej 	hd->hpib_acr = AUX_CHDFE;
     86      1.1  thorpej 	hd->hpib_acr = AUX_RHDF;
     87      1.1  thorpej 	hd->hpib_acr = AUX_CSWRST;
     88      1.1  thorpej 	hd->hpib_acr = AUX_TCA;
     89      1.1  thorpej 	hd->hpib_acr = AUX_CSRE;
     90      1.1  thorpej 	hd->hpib_acr = AUX_SSIC;
     91      1.1  thorpej 	DELAY(100);
     92      1.1  thorpej 	hd->hpib_acr = AUX_CSIC;
     93      1.1  thorpej 	hd->hpib_acr = AUX_SSRE;
     94      1.1  thorpej 	hd->hpib_data = C_DCL;
     95      1.1  thorpej 	DELAY(100000);
     96      1.1  thorpej }
     97      1.1  thorpej 
     98      1.3  tsutsui int
     99  1.5.4.1   rpaulo nhpibsend(int unit, int slave, int sec, uint8_t *buf, int cnt)
    100      1.3  tsutsui {
    101      1.3  tsutsui 	struct hpib_softc *hs = &hpib_softc[unit];
    102      1.3  tsutsui 	struct nhpibdevice *hd;
    103      1.3  tsutsui 	int origcnt = cnt;
    104      1.1  thorpej 
    105      1.3  tsutsui 	hd = (void *)hs->sc_addr;
    106      1.1  thorpej 	hd->hpib_acr = AUX_TCA;
    107      1.1  thorpej 	hd->hpib_data = C_UNL;
    108      1.1  thorpej 	nhpibowait(hd);
    109      1.1  thorpej 	hd->hpib_data = C_TAG + hs->sc_ba;
    110      1.1  thorpej 	hd->hpib_acr = AUX_STON;
    111      1.1  thorpej 	nhpibowait(hd);
    112      1.1  thorpej 	hd->hpib_data = C_LAG + slave;
    113      1.1  thorpej 	nhpibowait(hd);
    114      1.1  thorpej 	if (sec != -1) {
    115      1.1  thorpej 		hd->hpib_data = C_SCG + sec;
    116      1.1  thorpej 		nhpibowait(hd);
    117      1.1  thorpej 	}
    118      1.1  thorpej 	hd->hpib_acr = AUX_GTS;
    119      1.1  thorpej 	if (cnt) {
    120      1.1  thorpej 		while (--cnt) {
    121      1.1  thorpej 			hd->hpib_data = *buf++;
    122      1.1  thorpej 			if (nhpibowait(hd) < 0)
    123      1.1  thorpej 				break;
    124      1.1  thorpej 		}
    125      1.1  thorpej 		hd->hpib_acr = AUX_EOI;
    126      1.1  thorpej 		hd->hpib_data = *buf;
    127      1.1  thorpej 		if (nhpibowait(hd) < 0)
    128      1.1  thorpej 			cnt++;
    129      1.1  thorpej 		hd->hpib_acr = AUX_TCA;
    130      1.1  thorpej 	}
    131      1.3  tsutsui 	return origcnt - cnt;
    132      1.1  thorpej }
    133      1.1  thorpej 
    134      1.3  tsutsui int
    135  1.5.4.1   rpaulo nhpibrecv(int unit, int slave, int sec, uint8_t *buf, int cnt)
    136      1.3  tsutsui {
    137      1.3  tsutsui 	struct hpib_softc *hs = &hpib_softc[unit];
    138      1.3  tsutsui 	struct nhpibdevice *hd;
    139      1.3  tsutsui 	int origcnt = cnt;
    140      1.1  thorpej 
    141      1.3  tsutsui 	hd = (void *)hs->sc_addr;
    142      1.1  thorpej 	hd->hpib_acr = AUX_TCA;
    143      1.1  thorpej 	hd->hpib_data = C_UNL;
    144      1.1  thorpej 	nhpibowait(hd);
    145      1.1  thorpej 	hd->hpib_data = C_LAG + hs->sc_ba;
    146      1.1  thorpej 	hd->hpib_acr = AUX_SLON;
    147      1.1  thorpej 	nhpibowait(hd);
    148      1.1  thorpej 	hd->hpib_data = C_TAG + slave;
    149      1.1  thorpej 	nhpibowait(hd);
    150      1.1  thorpej 	if (sec != -1) {
    151      1.1  thorpej 		hd->hpib_data = C_SCG + sec;
    152      1.1  thorpej 		nhpibowait(hd);
    153      1.1  thorpej 	}
    154      1.1  thorpej 	hd->hpib_acr = AUX_RHDF;
    155      1.1  thorpej 	hd->hpib_acr = AUX_GTS;
    156      1.1  thorpej 	if (cnt) {
    157      1.1  thorpej 		while (--cnt >= 0) {
    158      1.1  thorpej 			if (nhpibiwait(hd) < 0)
    159      1.1  thorpej 				break;
    160      1.1  thorpej 			*buf++ = hd->hpib_data;
    161      1.1  thorpej 		}
    162      1.1  thorpej 		cnt++;
    163      1.1  thorpej 		hd->hpib_acr = AUX_TCA;
    164      1.1  thorpej 	}
    165      1.3  tsutsui 	return origcnt - cnt;
    166      1.1  thorpej }
    167      1.1  thorpej 
    168      1.3  tsutsui int
    169      1.4  tsutsui nhpibppoll(int unit)
    170      1.1  thorpej {
    171      1.3  tsutsui 	struct hpib_softc *hs = &hpib_softc[unit];
    172      1.3  tsutsui 	struct nhpibdevice *hd;
    173      1.3  tsutsui 	int ppoll;
    174      1.1  thorpej 
    175      1.3  tsutsui 	hd = (void *)hs->sc_addr;
    176      1.1  thorpej 	hd->hpib_acr = AUX_SPP;
    177      1.1  thorpej 	DELAY(25);
    178      1.1  thorpej 	ppoll = hd->hpib_cpt;
    179      1.1  thorpej 	hd->hpib_acr = AUX_CPP;
    180      1.3  tsutsui 	return ppoll;
    181      1.1  thorpej }
    182      1.1  thorpej 
    183      1.3  tsutsui static int
    184      1.4  tsutsui nhpibowait(struct nhpibdevice *hd)
    185      1.1  thorpej {
    186      1.3  tsutsui 	int timo = 100000;
    187      1.1  thorpej 
    188      1.1  thorpej 	while ((hd->hpib_mis & MIS_BO) == 0 && --timo)
    189      1.1  thorpej 		;
    190      1.1  thorpej 	if (timo == 0)
    191      1.3  tsutsui 		return -1;
    192      1.3  tsutsui 	return 0;
    193      1.1  thorpej }
    194      1.1  thorpej 
    195      1.3  tsutsui static int
    196      1.4  tsutsui nhpibiwait(struct nhpibdevice *hd)
    197      1.1  thorpej {
    198      1.3  tsutsui 	int timo = 100000;
    199      1.1  thorpej 
    200      1.1  thorpej 	while ((hd->hpib_mis & MIS_BI) == 0 && --timo)
    201      1.1  thorpej 		;
    202      1.1  thorpej 	if (timo == 0)
    203      1.3  tsutsui 		return -1;
    204      1.3  tsutsui 	return 0;
    205      1.1  thorpej }
    206