Annotation of sys/arch/hp300/stand/common/nhpib.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: nhpib.c,v 1.4 2006/08/17 06:31:10 miod Exp $ */
! 2: /* $NetBSD: nhpib.c,v 1.5 1995/08/05 16:47:46 thorpej Exp $ */
! 3:
! 4: /*
! 5: * Copyright (c) 1982, 1990, 1993
! 6: * The Regents of the University of California. All rights reserved.
! 7: *
! 8: * Redistribution and use in source and binary forms, with or without
! 9: * modification, are permitted provided that the following conditions
! 10: * are met:
! 11: * 1. Redistributions of source code must retain the above copyright
! 12: * notice, this list of conditions and the following disclaimer.
! 13: * 2. Redistributions in binary form must reproduce the above copyright
! 14: * notice, this list of conditions and the following disclaimer in the
! 15: * documentation and/or other materials provided with the distribution.
! 16: * 3. Neither the name of the University nor the names of its contributors
! 17: * may be used to endorse or promote products derived from this software
! 18: * without specific prior written permission.
! 19: *
! 20: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
! 21: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 22: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 23: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
! 24: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 25: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 26: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 27: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 28: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 29: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 30: * SUCH DAMAGE.
! 31: *
! 32: * @(#)nhpib.c 8.1 (Berkeley) 6/10/93
! 33: */
! 34:
! 35: /*
! 36: * Internal/98624 HPIB driver
! 37: */
! 38:
! 39: #include <sys/param.h>
! 40:
! 41: #include <hp300/dev/nhpibreg.h>
! 42:
! 43: #include "samachdep.h"
! 44: #include "hpibvar.h"
! 45:
! 46: int nhpibiwait(struct nhpibdevice *);
! 47: int nhpibowait(struct nhpibdevice *);
! 48: void nhpibreset(int);
! 49:
! 50: int
! 51: nhpibinit(int unit)
! 52: {
! 53: struct hpib_softc *hs = &hpib_softc[unit];
! 54: struct nhpibdevice *hd = (struct nhpibdevice *)hs->sc_addr;
! 55: extern int internalhpib;
! 56:
! 57: if ((int)hd == internalhpib) {
! 58: hs->sc_type = HPIBA;
! 59: hs->sc_ba = HPIBA_BA;
! 60: }
! 61: else if (hd->hpib_cid == HPIBB) {
! 62: hs->sc_type = HPIBB;
! 63: hs->sc_ba = hd->hpib_csa & CSA_BA;
! 64: }
! 65: else
! 66: return(0);
! 67: nhpibreset(unit);
! 68: return(1);
! 69: }
! 70:
! 71: void
! 72: nhpibreset(int unit)
! 73: {
! 74: struct hpib_softc *hs = &hpib_softc[unit];
! 75: struct nhpibdevice *hd;
! 76:
! 77: hd = (struct nhpibdevice *)hs->sc_addr;
! 78: hd->hpib_acr = AUX_SSWRST;
! 79: hd->hpib_ar = hs->sc_ba;
! 80: hd->hpib_lim = 0;
! 81: hd->hpib_mim = 0;
! 82: hd->hpib_acr = AUX_CDAI;
! 83: hd->hpib_acr = AUX_CSHDW;
! 84: hd->hpib_acr = AUX_SSTD1;
! 85: hd->hpib_acr = AUX_SVSTD1;
! 86: hd->hpib_acr = AUX_CPP;
! 87: hd->hpib_acr = AUX_CHDFA;
! 88: hd->hpib_acr = AUX_CHDFE;
! 89: hd->hpib_acr = AUX_RHDF;
! 90: hd->hpib_acr = AUX_CSWRST;
! 91: hd->hpib_acr = AUX_TCA;
! 92: hd->hpib_acr = AUX_CSRE;
! 93: hd->hpib_acr = AUX_SSIC;
! 94: DELAY(100);
! 95: hd->hpib_acr = AUX_CSIC;
! 96: hd->hpib_acr = AUX_SSRE;
! 97: hd->hpib_data = C_DCL;
! 98: DELAY(100000);
! 99: }
! 100:
! 101: int
! 102: nhpibsend(int unit, int slave, int sec, char *buf, int cnt)
! 103: {
! 104: struct hpib_softc *hs = &hpib_softc[unit];
! 105: struct nhpibdevice *hd;
! 106: int origcnt = cnt;
! 107:
! 108: hd = (struct nhpibdevice *)hs->sc_addr;
! 109: hd->hpib_acr = AUX_TCA;
! 110: hd->hpib_data = C_UNL;
! 111: nhpibowait(hd);
! 112: hd->hpib_data = C_TAG + hs->sc_ba;
! 113: hd->hpib_acr = AUX_STON;
! 114: nhpibowait(hd);
! 115: hd->hpib_data = C_LAG + slave;
! 116: nhpibowait(hd);
! 117: if (sec != -1) {
! 118: hd->hpib_data = C_SCG + sec;
! 119: nhpibowait(hd);
! 120: }
! 121: hd->hpib_acr = AUX_GTS;
! 122: if (cnt) {
! 123: while (--cnt) {
! 124: hd->hpib_data = *buf++;
! 125: if (nhpibowait(hd) < 0)
! 126: break;
! 127: }
! 128: hd->hpib_acr = AUX_EOI;
! 129: hd->hpib_data = *buf;
! 130: if (nhpibowait(hd) < 0)
! 131: cnt++;
! 132: hd->hpib_acr = AUX_TCA;
! 133: }
! 134: return(origcnt - cnt);
! 135: }
! 136:
! 137: int
! 138: nhpibrecv(int unit, int slave, int sec, char *buf, int cnt)
! 139: {
! 140: struct hpib_softc *hs = &hpib_softc[unit];
! 141: struct nhpibdevice *hd;
! 142: int origcnt = cnt;
! 143:
! 144: hd = (struct nhpibdevice *)hs->sc_addr;
! 145: hd->hpib_acr = AUX_TCA;
! 146: hd->hpib_data = C_UNL;
! 147: nhpibowait(hd);
! 148: hd->hpib_data = C_LAG + hs->sc_ba;
! 149: hd->hpib_acr = AUX_SLON;
! 150: nhpibowait(hd);
! 151: hd->hpib_data = C_TAG + slave;
! 152: nhpibowait(hd);
! 153: if (sec != -1) {
! 154: hd->hpib_data = C_SCG + sec;
! 155: nhpibowait(hd);
! 156: }
! 157: hd->hpib_acr = AUX_RHDF;
! 158: hd->hpib_acr = AUX_GTS;
! 159: if (cnt) {
! 160: while (--cnt >= 0) {
! 161: if (nhpibiwait(hd) < 0)
! 162: break;
! 163: *buf++ = hd->hpib_data;
! 164: }
! 165: cnt++;
! 166: hd->hpib_acr = AUX_TCA;
! 167: }
! 168: return(origcnt - cnt);
! 169: }
! 170:
! 171: int
! 172: nhpibppoll(int unit)
! 173: {
! 174: struct hpib_softc *hs = &hpib_softc[unit];
! 175: struct nhpibdevice *hd;
! 176: int ppoll;
! 177:
! 178: hd = (struct nhpibdevice *)hs->sc_addr;
! 179: hd->hpib_acr = AUX_SPP;
! 180: DELAY(25);
! 181: ppoll = hd->hpib_cpt;
! 182: hd->hpib_acr = AUX_CPP;
! 183: return(ppoll);
! 184: }
! 185:
! 186: int
! 187: nhpibowait(struct nhpibdevice *hd)
! 188: {
! 189: int timo = 100000;
! 190:
! 191: while ((hd->hpib_mis & MIS_BO) == 0 && --timo)
! 192: ;
! 193: if (timo == 0)
! 194: return(-1);
! 195: return(0);
! 196: }
! 197:
! 198: int
! 199: nhpibiwait(struct nhpibdevice *hd)
! 200: {
! 201: int timo = 100000;
! 202:
! 203: while ((hd->hpib_mis & MIS_BI) == 0 && --timo)
! 204: ;
! 205: if (timo == 0)
! 206: return(-1);
! 207: return(0);
! 208: }
CVSweb
![[BACK]](/icons/back.gif){kind=icon}
Return to nhpib.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / sys / arch / hp300 / stand / common