/*      $NetBSD: hpib.c,v 1.9 2007/03/04 05:59:50 christos Exp $        */

/*
 * Copyright (c) 1982, 1990, 1993
 *      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. 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.
 *
 *      @(#)hpib.c      8.1 (Berkeley) 6/10/93
 */

/*
 * HPIB driver
 */
#include <sys/param.h>
#include <sys/reboot.h>

#include <lib/libsa/stand.h>

#include <hp300/stand/common/device.h>
#include <hp300/stand/common/hpibvar.h>
#include <hp300/stand/common/samachdep.h>

#include <hp300/dev/dioreg.h>

int     internalhpib = IIOV(DIO_IHPIBADDR);

struct  hpib_softc hpib_softc[NHPIB];

void
hpibinit(void)
{
        struct hp_hw *hw;
        struct hpib_softc *hs;
        int i;

        i = 0;
        for (hw = sc_table; i < NHPIB && hw < &sc_table[MAXCTLRS]; hw++) {
                if (!HW_ISHPIB(hw))
                        continue;
                hs = &hpib_softc[i];
                hs->sc_addr = hw->hw_kva;
                if (nhpibinit(i) == 0)
                        if (fhpibinit(i) == 0)
                                continue;
                if (howto & RB_ASKNAME)
                        printf("hpib%d at sc%d\n", i, hw->hw_sc);
                hw->hw_pa = (void *) i; /* XXX for autoconfig */
                hs->sc_alive = 1;
                i++;
        }
}

int
hpibalive(int unit)
{
        if (unit >= NHPIB || hpib_softc[unit].sc_alive == 0)
                return 0;
        return 1;
}

int
hpibid(int unit, int slave)
{
        short id;
        int rv;

        if (hpib_softc[unit].sc_type == HPIBC)
                rv = fhpibrecv(unit, 31, slave, (uint8_t *)&id, 2);
        else
                rv = nhpibrecv(unit, 31, slave, (uint8_t *)&id, 2);
        if (rv != 2)
                return 0;
        return id;
}

int
hpibsend(int unit, int slave, int sec, uint8_t *buf, int cnt)
{

        if (hpib_softc[unit].sc_type == HPIBC)
                return (fhpibsend(unit, slave, sec, buf, cnt));
        return nhpibsend(unit, slave, sec, buf, cnt);
}

int
hpibrecv(int unit, int slave, int sec, uint8_t *buf, int cnt)
{

        if (hpib_softc[unit].sc_type == HPIBC)
                return (fhpibrecv(unit, slave, sec, buf, cnt));
        return nhpibrecv(unit, slave, sec, buf, cnt);
}

int
hpibswait(int unit, int slave)
{
        int timo = 1000000;
        int (*poll)(int);

        slave = 0x80 >> slave;
        if (hpib_softc[unit].sc_type == HPIBC)
                poll = fhpibppoll;
        else
                poll = nhpibppoll;
        while (((*poll)(unit) & slave) == 0)
                if (--timo == 0)
                        break;
        if (timo == 0)
                return -1;
        return 0;
}

void
hpibgo(int unit, int slave, int sec, uint8_t *addr, int count, int flag)
{

        if (hpib_softc[unit].sc_type == HPIBC)
                if (flag == F_READ)
                        fhpibrecv(unit, slave, sec, addr, count);
                else
                        fhpibsend(unit, slave, sec, addr, count);
        else
                if (flag == F_READ)
                        nhpibrecv(unit, slave, sec, addr, count);
                else
                        nhpibsend(unit, slave, sec, addr, count);
}