NetBSD/sys/arch/amiga/dev/afsc.c

208 lines
5.6 KiB
C

/* $NetBSD: afsc.c,v 1.22 1998/01/12 10:39:06 thorpej Exp $ */
/*
* Copyright (c) 1994 Michael L. Hitch
* Copyright (c) 1982, 1990 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. 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.
*
* @(#)dma.c
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <dev/scsipi/scsi_all.h>
#include <dev/scsipi/scsipi_all.h>
#include <dev/scsipi/scsiconf.h>
#include <machine/cpu.h>
#include <amiga/amiga/custom.h>
#include <amiga/amiga/cc.h>
#include <amiga/amiga/device.h>
#include <amiga/amiga/isr.h>
#include <amiga/dev/siopreg.h>
#include <amiga/dev/siopvar.h>
#include <amiga/dev/zbusvar.h>
void afscattach __P((struct device *, struct device *, void *));
int afscmatch __P((struct device *, struct cfdata *, void *));
int afsc_dmaintr __P((void *));
#ifdef DEBUG
void afsc_dump __P((void));
#endif
struct scsipi_adapter afsc_scsiswitch = {
siop_scsicmd,
siop_minphys,
0, /* no lun support */
0, /* no lun support */
};
struct scsipi_device afsc_scsidev = {
NULL, /* use default error handler */
NULL, /* do not have a start functio */
NULL, /* have no async handler */
NULL, /* Use default done routine */
};
#ifdef DEBUG
#endif
struct cfattach afsc_ca = {
sizeof(struct siop_softc), afscmatch, afscattach
};
struct cfattach aftsc_ca = {
sizeof(struct siop_softc), afscmatch, afscattach
};
/*
* if we are a Commodore Amiga A4091 or possibly an A4000T
*/
int
afscmatch(pdp, cfp, auxp)
struct device *pdp;
struct cfdata *cfp;
void *auxp;
{
struct zbus_args *zap;
siop_regmap_p rp;
u_long temp, scratch;
zap = auxp;
if (zap->manid == 514 && zap->prodid == 84)
return(1); /* It's an A4091 SCSI card */
if (!is_a4000() || !matchname(auxp, "afsc"))
return(0); /* Not on an A4000 or not A4000T SCSI */
rp = ztwomap(0xdd0040);
if (badaddr((caddr_t)&rp->siop_scratch) || badaddr((caddr_t)&rp->siop_temp)) {
return(0);
}
scratch = rp->siop_scratch;
temp = rp->siop_temp;
rp->siop_scratch = 0xdeadbeef;
rp->siop_temp = 0xaaaa5555;
if (rp->siop_scratch != 0xdeadbeef || rp->siop_temp != 0xaaaa5555)
return(0);
rp->siop_scratch = scratch;
rp->siop_temp = temp;
if (rp->siop_scratch != scratch || rp->siop_temp != temp)
return(0);
return(1);
}
void
afscattach(pdp, dp, auxp)
struct device *pdp, *dp;
void *auxp;
{
struct siop_softc *sc;
struct zbus_args *zap;
siop_regmap_p rp;
printf("\n");
zap = auxp;
sc = (struct siop_softc *)dp;
if (zap->manid == 514 && zap->prodid == 84)
sc->sc_siopp = rp = zap->va + 0x00800000;
else
sc->sc_siopp = rp = ztwomap(0xdd0040);
/*
* CTEST7 = 80 [disable burst]
*/
sc->sc_clock_freq = 50; /* Clock = 50Mhz */
sc->sc_ctest7 = SIOP_CTEST7_CDIS;
sc->sc_dcntl = SIOP_DCNTL_EA;
sc->sc_link.scsipi_scsi.channel = SCSI_CHANNEL_ONLY_ONE;
sc->sc_link.adapter_softc = sc;
sc->sc_link.scsipi_scsi.adapter_target = 7;
sc->sc_link.adapter = &afsc_scsiswitch;
sc->sc_link.device = &afsc_scsidev;
sc->sc_link.openings = 2;
sc->sc_link.scsipi_scsi.max_target = 7;
sc->sc_link.type = BUS_SCSI;
siopinitialize(sc);
sc->sc_isr.isr_intr = afsc_dmaintr;
sc->sc_isr.isr_arg = sc;
sc->sc_isr.isr_ipl = 2;
add_isr (&sc->sc_isr);
/*
* attach all scsi units on us
*/
config_found(dp, &sc->sc_link, scsiprint);
}
int
afsc_dmaintr(arg)
void *arg;
{
struct siop_softc *sc = arg;
siop_regmap_p rp;
u_char istat;
if (sc->sc_flags & SIOP_INTSOFF)
return (0); /* interrupts are not active */
rp = sc->sc_siopp;
istat = rp->siop_istat;
if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0)
return(0);
/*
* save interrupt status, DMA status, and SCSI status 0
* (may need to deal with stacked interrupts?)
*/
sc->sc_sstat0 = rp->siop_sstat0;
sc->sc_istat = istat;
sc->sc_dstat = rp->siop_dstat;
siopintr(sc);
return(1);
}
#ifdef DEBUG
void
afsc_dump()
{
extern struct cfdriver afsc_cd;
int i;
for (i = 0; i < afsc_cd.cd_ndevs; ++i)
if (afsc_cd.cd_devs[i])
siop_dump(afsc_cd.cd_devs[i]);
}
#endif