/* $NetBSD: bppcsc.c,v 1.5 2021/08/07 16:18:41 thorpej Exp $ */
/*
* 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. 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
*/
/*
* Copyright (c) 2011 Radoslaw Kujawa
* Copyright (c) 1994 Michael L. Hitch
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: bppcsc.c,v 1.5 2021/08/07 16:18:41 thorpej Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <uvm/uvm_extern.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>
#include <amiga/dev/p5busvar.h>
#define BPPC_SCSI_OFF 0xf40000
#define BPPC_PUPROM_OFF 0xf00010
void bppcscattach(device_t, device_t, void *);
int bppcscmatch(device_t, cfdata_t, void *);
int bppcsc_dmaintr(void *);
#ifdef DEBUG
void bppcsc_dump(void);
#endif
CFATTACH_DECL_NEW(bppcsc, sizeof(struct siop_softc),
bppcscmatch, bppcscattach, NULL, NULL);
/*
* if we are a Phase5 BlizzardPPC 603e+
*/
int
bppcscmatch(device_t parent, cfdata_t cf, void *aux)
{
struct p5bus_attach_args *p5baa;
p5baa = aux;
if (strcmp(p5baa->p5baa_name, "bppcsc") == 0)
return 1;
return 0 ;
}
void
bppcscattach(device_t parent, device_t self, void *aux)
{
struct siop_softc *sc;
struct scsipi_adapter *adapt;
struct scsipi_channel *chan;
siop_regmap_p rp;
sc = device_private(self);
sc->sc_dev = self;
adapt = &sc->sc_adapter;
chan = &sc->sc_channel;
aprint_naive(": SCSI controller\n");
aprint_normal(": BlizzardPPC 603e+ SCSI adapter\n");
sc->sc_siopp = rp = ztwomap(BPPC_SCSI_OFF);
#ifdef DEBUG
siop_dump(sc);
#endif
/*
* CTEST7 = 00
*/
sc->sc_clock_freq = 50; /* Clock = 50 MHz */
sc->sc_ctest7 = 0x00;
sc->sc_dcntl = 0x20; /* XXX - taken from cbiiisc */
/*
* Fill in the scsipi_adapter.
*/
memset(adapt, 0, sizeof(*adapt));
adapt->adapt_dev = self;
adapt->adapt_nchannels = 1;
adapt->adapt_openings = 7;
adapt->adapt_max_periph = 1;
adapt->adapt_request = siop_scsipi_request;
adapt->adapt_minphys = siop_minphys;
/*
* Fill in the scsipi_channel.
*/
memset(chan, 0, sizeof(*chan));
chan->chan_adapter = adapt;
chan->chan_bustype = &scsi_bustype;
chan->chan_channel = 0;
chan->chan_ntargets = 8;
chan->chan_nluns = 8;
chan->chan_id = 7;
siopinitialize(sc);
sc->sc_isr.isr_intr = bppcsc_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(self, chan, scsiprint, CFARGS_NONE);
}
int
bppcsc_dmaintr(void *arg)
{
struct siop_softc *sc;
siop_regmap_p rp;
u_char istat;
sc = arg;
if (sc->sc_flags & SIOP_INTSOFF)
return 0; /* interrupts are not active */
rp = sc->sc_siopp;
amiga_membarrier();
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;
amiga_membarrier();
siopintr(sc);
return 1;
}
#ifdef DEBUG
void
bppcsc_dump(void)
{
extern struct cfdriver bppcsc_cd;
struct siop_softc *sc;
int i;
for (i = 0; i < bppcsc_cd.cd_ndevs; ++i) {
sc = device_lookup_private(&bppcsc_cd, i);
if (sc != NULL)
siop_dump(sc);
}
}
#endif
