Return to hpib.c CVS log

Up to [Net/2] / Net2 / arch / hp300 / stand

Annotation of Net2/arch/hp300/stand/hpib.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1982, 1990 The Regents of the University of California.
        !             3:  * All rights reserved.
        !             4:  *
        !             5:  * Redistribution and use in source and binary forms, with or without
        !             6:  * modification, are permitted provided that the following conditions
        !             7:  * are met:
        !             8:  * 1. Redistributions of source code must retain the above copyright
        !             9:  *    notice, this list of conditions and the following disclaimer.
        !            10:  * 2. Redistributions in binary form must reproduce the above copyright
        !            11:  *    notice, this list of conditions and the following disclaimer in the
        !            12:  *    documentation and/or other materials provided with the distribution.
        !            13:  * 3. All advertising materials mentioning features or use of this software
        !            14:  *    must display the following acknowledgement:
        !            15:  *     This product includes software developed by the University of
        !            16:  *     California, Berkeley and its contributors.
        !            17:  * 4. Neither the name of the University nor the names of its contributors
        !            18:  *    may be used to endorse or promote products derived from this software
        !            19:  *    without specific prior written permission.
        !            20:  *
        !            21:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            22:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            23:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            24:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            25:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            26:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            27:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            28:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            29:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            30:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            31:  * SUCH DAMAGE.
        !            32:  *
        !            33:  *     @(#)hpib.c      7.5 (Berkeley) 5/7/91
        !            34:  */
        !            35: 
        !            36: /*
        !            37:  * HPIB driver
        !            38:  */
        !            39: #include <sys/param.h>
        !            40: #include <sys/reboot.h>
        !            41: #include "../dev/device.h"
        !            42: #include "hpibvar.h"
        !            43: 
        !            44: #include "saio.h"
        !            45: #include "samachdep.h"
        !            46: 
        !            47: int    internalhpib = IIOV(0x478000);
        !            48: int    fhpibppoll(), nhpibppoll();
        !            49: 
        !            50: struct hpib_softc hpib_softc[NHPIB];
        !            51: 
        !            52: #define        hpibunit(x)     ((x) >> 3)
        !            53: #define        hpibslave(x)    ((x) & 7)
        !            54: 
        !            55: hpibinit()
        !            56: {
        !            57:        extern struct hp_hw sc_table[];
        !            58:        register struct hp_hw *hw;
        !            59:        register struct hpib_softc *hs;
        !            60:        register int i, addr;
        !            61:        static int first = 1;
        !            62:        
        !            63:        i = 0;
        !            64:        for (hw = sc_table; i < NHPIB && hw < &sc_table[MAXCTLRS]; hw++) {
        !            65:                if (!HW_ISHPIB(hw))
        !            66:                        continue;
        !            67:                hs = &hpib_softc[i];
        !            68:                hs->sc_addr = hw->hw_kva;
        !            69:                if (nhpibinit(i) == 0)
        !            70:                        if (fhpibinit(i) == 0)
        !            71:                                continue;
        !            72:                if (howto & RB_ASKNAME)
        !            73:                        printf("hpib%d at sc%d\n", i, hw->hw_sc);
        !            74:                /*
        !            75:                 * Adjust devtype on first call.  This routine assumes that
        !            76:                 * adaptor is in the high byte of devtype.
        !            77:                 */
        !            78:                if (first && ((devtype >> 24) & 0xff) == hw->hw_sc) {
        !            79:                        devtype = (devtype & 0x00ffffff) | (i << 24);
        !            80:                        first = 0;
        !            81:                }
        !            82:                hs->sc_alive = 1;
        !            83:                i++;
        !            84:        }
        !            85: }
        !            86: 
        !            87: hpibalive(unit)
        !            88:        register int unit;
        !            89: {
        !            90:        unit = hpibunit(unit);
        !            91:        if (unit >= NHPIB || hpib_softc[unit].sc_alive == 0)
        !            92:                return (0);
        !            93:        return (1);
        !            94: }
        !            95: 
        !            96: hpibid(unit)
        !            97:        register int unit;
        !            98: {
        !            99:        register struct hpib_softc *hs = &hpib_softc[hpibunit(unit)];
        !           100:        register int slave;
        !           101:        short id;
        !           102: 
        !           103:        slave = hpibslave(unit);
        !           104:        unit = hpibunit(unit);
        !           105:        if (hs->sc_type == HPIBC)
        !           106:                slave = fhpibrecv(unit, 31, slave, &id, 2);
        !           107:        else
        !           108:                slave = nhpibrecv(unit, 31, slave, &id, 2);
        !           109:        if (slave != 2)
        !           110:                return (0);
        !           111:        return (id);
        !           112: }
        !           113: 
        !           114: hpibsend(unit, sec, buf, cnt)
        !           115:        register char *buf;
        !           116:        register int cnt;
        !           117: {
        !           118:        register struct hpib_softc *hs = &hpib_softc[hpibunit(unit)];
        !           119:        register int slave;
        !           120: 
        !           121:        slave = hpibslave(unit);
        !           122:        unit = hpibunit(unit);
        !           123:        if (hs->sc_type == HPIBC)
        !           124:                return (fhpibsend(unit, slave, sec, buf, cnt));
        !           125:        else
        !           126:                return (nhpibsend(unit, slave, sec, buf, cnt));
        !           127: }
        !           128: 
        !           129: hpibrecv(unit, sec, buf, cnt)
        !           130:        register char *buf;
        !           131:        register int cnt;
        !           132: {
        !           133:        register struct hpib_softc *hs = &hpib_softc[hpibunit(unit)];
        !           134:        register int slave;
        !           135: 
        !           136:        slave = hpibslave(unit);
        !           137:        unit = hpibunit(unit);
        !           138:        if (hs->sc_type == HPIBC)
        !           139:                return (fhpibrecv(unit, slave, sec, buf, cnt));
        !           140:        else
        !           141:                return (nhpibrecv(unit, slave, sec, buf, cnt));
        !           142: }
        !           143: 
        !           144: hpibswait(unit)
        !           145:        register int unit;
        !           146: {
        !           147:        register int timo = 1000000;
        !           148:        register int slave = 0x80 >> hpibslave(unit);
        !           149:        register int (*poll)();
        !           150: 
        !           151:        unit = hpibunit(unit);
        !           152:        if (hpib_softc[unit].sc_type == HPIBC)
        !           153:                poll = fhpibppoll;
        !           154:        else
        !           155:                poll = nhpibppoll;
        !           156:        while (((*poll)(unit) & slave) == 0)
        !           157:                if (--timo == 0)
        !           158:                        break;
        !           159:        if (timo == 0)
        !           160:                return (-1);
        !           161:        return (0);
        !           162: }
        !           163: 
        !           164: hpibgo(unit, sec, addr, count, flag)
        !           165:        register int unit;
        !           166:        char *addr;
        !           167: {
        !           168:        register int slave;
        !           169: 
        !           170:        slave = hpibslave(unit);
        !           171:        unit = hpibunit(unit);
        !           172:        if (hpib_softc[unit].sc_type == HPIBC)
        !           173:                if (flag == F_READ)
        !           174:                        fhpibrecv(unit, slave, sec, addr, count);
        !           175:                else
        !           176:                        fhpibsend(unit, slave, sec, addr, count);
        !           177:        else
        !           178:                if (flag == F_READ)
        !           179:                        nhpibrecv(unit, slave, sec, addr, count);
        !           180:                else
        !           181:                        nhpibsend(unit, slave, sec, addr, count);
        !           182: }

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.