196 lines
5.3 KiB
C
196 lines
5.3 KiB
C
/* $NetBSD: zssc.c,v 1.28 1999/01/10 13:24:11 tron 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 <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 zsscattach __P((struct device *, struct device *, void *));
|
|
int zsscmatch __P((struct device *, struct cfdata *, void *));
|
|
int zssc_dmaintr __P((void *));
|
|
#ifdef DEBUG
|
|
void zssc_dump __P((void));
|
|
#endif
|
|
|
|
struct scsipi_device zssc_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 zssc_ca = {
|
|
sizeof(struct siop_softc), zsscmatch, zsscattach
|
|
};
|
|
|
|
/*
|
|
* if we are an PPI Zeus
|
|
*/
|
|
int
|
|
zsscmatch(pdp, cfp, auxp)
|
|
struct device *pdp;
|
|
struct cfdata *cfp;
|
|
void *auxp;
|
|
{
|
|
struct zbus_args *zap;
|
|
|
|
zap = auxp;
|
|
if (zap->manid == 2026 && zap->prodid == 150)
|
|
return(1);
|
|
return(0);
|
|
}
|
|
|
|
void
|
|
zsscattach(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;
|
|
sc->sc_siopp = rp = (siop_regmap_p)((caddr_t)zap->va + 0x4000);
|
|
|
|
/*
|
|
* CTEST7 = 00
|
|
*/
|
|
sc->sc_clock_freq = 66; /* Clock = 66Mhz */
|
|
sc->sc_ctest7 = 0x00;
|
|
sc->sc_dcntl = 0x00;
|
|
|
|
alloc_sicallback();
|
|
|
|
sc->sc_adapter.scsipi_cmd = siop_scsicmd;
|
|
sc->sc_adapter.scsipi_minphys = siop_minphys;
|
|
|
|
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 = &sc->sc_adapter;
|
|
sc->sc_link.device = &zssc_scsidev;
|
|
sc->sc_link.openings = 2;
|
|
sc->sc_link.scsipi_scsi.max_target = 7;
|
|
sc->sc_link.scsipi_scsi.max_lun = 7;
|
|
sc->sc_link.type = BUS_SCSI;
|
|
|
|
siopinitialize(sc);
|
|
|
|
sc->sc_isr.isr_intr = zssc_dmaintr;
|
|
sc->sc_isr.isr_arg = sc;
|
|
sc->sc_isr.isr_ipl = 6;
|
|
add_isr(&sc->sc_isr);
|
|
|
|
/*
|
|
* attach all scsi units on us
|
|
*/
|
|
config_found(dp, &sc->sc_link, scsiprint);
|
|
}
|
|
|
|
/*
|
|
* Level 6 interrupt processing for the Progressive Peripherals Inc
|
|
* Zeus SCSI. Because the level 6 interrupt is above splbio, the
|
|
* interrupt status is saved and an sicallback to the level 2 interrupt
|
|
* handler scheduled. This way, the actual processing of the interrupt
|
|
* can be deferred until splbio is unblocked.
|
|
*/
|
|
|
|
int
|
|
zssc_dmaintr(arg)
|
|
void *arg;
|
|
{
|
|
struct siop_softc *sc = arg;
|
|
siop_regmap_p rp;
|
|
int 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;
|
|
/*
|
|
* disable interrupts until the callback can process this
|
|
* interrupt.
|
|
*/
|
|
rp->siop_sien = 0;
|
|
rp->siop_dien = 0;
|
|
sc->sc_flags |= SIOP_INTDEFER | SIOP_INTSOFF;
|
|
add_sicallback((sifunc_t)siopintr, sc, NULL);
|
|
return(1);
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
void
|
|
zssc_dump()
|
|
{
|
|
extern struct cfdriver zssc_cd;
|
|
int i;
|
|
|
|
for (i = 0; i < zssc_cd.cd_ndevs; ++i)
|
|
if (zssc_cd.cd_devs[i])
|
|
siop_dump(zssc_cd.cd_devs[i]);
|
|
}
|
|
#endif
|