b7ee76f1c4
bus. Without this, cbiiisc used to hang if nothing was connected. Reported by Matthias Scheler. A similar method to avoid this was suggested by Ralph Schmidt.
200 lines
5.2 KiB
C
200 lines
5.2 KiB
C
/* $NetBSD: cbiiisc.c,v 1.5 1999/06/07 21:30:58 is Exp $ */
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/*
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* Copyright (c) 1994,1998 Michael L. Hitch
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* Copyright (c) 1982, 1990 The Regents of the University of California.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)dma.c
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/device.h>
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#include <dev/scsipi/scsi_all.h>
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#include <dev/scsipi/scsipi_all.h>
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#include <dev/scsipi/scsiconf.h>
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#include <amiga/amiga/custom.h>
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#include <amiga/amiga/cc.h>
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#include <amiga/amiga/device.h>
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#include <amiga/amiga/isr.h>
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#define ARCH_720 /* This is for a 53c770 */
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#include <amiga/dev/siopreg.h>
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#include <amiga/dev/siopvar.h>
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#include <amiga/dev/zbusvar.h>
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void cbiiiscattach __P((struct device *, struct device *, void *));
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int cbiiiscmatch __P((struct device *, struct cfdata *, void *));
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int cbiiisc_dmaintr __P((void *));
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#ifdef DEBUG
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void cbiiisc_dump __P((void));
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#endif
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#if 0
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struct scsipi_adapter cbiiisc_scsiswitch = {
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siopng_scsicmd,
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siopng_minphys,
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NULL, /* scsipi_ioctl */
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};
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#endif
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struct scsipi_device cbiiisc_scsidev = {
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NULL, /* use default error handler */
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NULL, /* do not have a start functio */
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NULL, /* have no async handler */
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NULL, /* Use default done routine */
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};
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#ifdef DEBUG
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#endif
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struct cfattach cbiiisc_ca = {
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sizeof(struct siop_softc), cbiiiscmatch, cbiiiscattach
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};
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/*
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* if we are a CyberStorm MK III SCSI
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*/
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int
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cbiiiscmatch(pdp, cfp, auxp)
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struct device *pdp;
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struct cfdata *cfp;
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void *auxp;
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{
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struct zbus_args *zap;
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zap = auxp;
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if (zap->manid == 8512 && zap->prodid == 100)
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return(1);
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return(0);
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}
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void
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cbiiiscattach(pdp, dp, auxp)
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struct device *pdp, *dp;
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void *auxp;
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{
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struct siop_softc *sc;
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struct zbus_args *zap;
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siop_regmap_p rp;
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printf("\n");
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zap = auxp;
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sc = (struct siop_softc *)dp;
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sc->sc_siopp = rp = ztwomap(0xf40000);
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/* siopng_dump_registers(sc); */
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/*
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* CTEST7 = 00
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*/
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sc->sc_clock_freq = 50; /* Clock = 50 Mhz >> */
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sc->sc_ctest7 = 0x00;
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sc->sc_dcntl = 0x20; /* XXX ?? */
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alloc_sicallback();
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sc->sc_adapter.scsipi_cmd = siopng_scsicmd;
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sc->sc_adapter.scsipi_minphys = siopng_minphys;
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sc->sc_link.scsipi_scsi.channel = SCSI_CHANNEL_ONLY_ONE;
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sc->sc_link.adapter_softc = sc;
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sc->sc_link.scsipi_scsi.adapter_target = 7;
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#if 0
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sc->sc_link.adapter = &cbiiisc_scsiswitch;
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#endif
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sc->sc_link.adapter = &sc->sc_adapter;
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sc->sc_link.device = &cbiiisc_scsidev;
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sc->sc_link.openings = 2;
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sc->sc_link.scsipi_scsi.max_target = 15;
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sc->sc_link.scsipi_scsi.max_lun = 7;
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sc->sc_link.type = BUS_SCSI;
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siopnginitialize(sc);
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if (sc->sc_link.scsipi_scsi.max_target < 0)
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return;
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sc->sc_isr.isr_intr = cbiiisc_dmaintr;
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sc->sc_isr.isr_arg = sc;
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sc->sc_isr.isr_ipl = 2; /* ?? */
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add_isr(&sc->sc_isr);
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/*
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* attach all scsi units on us
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*/
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config_found(dp, &sc->sc_link, scsiprint);
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}
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int
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cbiiisc_dmaintr(arg)
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void *arg;
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{
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struct siop_softc *sc = arg;
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siop_regmap_p rp;
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int istat;
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if (sc->sc_flags & SIOP_INTSOFF)
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return (0); /* interrupts are not active */
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rp = sc->sc_siopp;
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istat = rp->siop_istat;
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if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0)
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return(0);
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/*
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* save interrupt status, DMA status, and SCSI status 0
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* (may need to deal with stacked interrupts?)
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*/
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sc->sc_sist = rp->siop_sist;
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sc->sc_istat = istat;
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sc->sc_dstat = rp->siop_dstat;
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siopngintr(sc);
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return(1);
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}
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#ifdef DEBUG
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void
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cbiiisc_dump()
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{
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extern struct cfdriver cbiiisc_cd;
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int i;
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for (i = 0; i < cbiiisc_cd.cd_ndevs; ++i)
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if (cbiiisc_cd.cd_devs[i])
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siopng_dump(cbiiisc_cd.cd_devs[i]);
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}
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#endif
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