NetBSD/sys/arch/sparc/dev/dma_obio.c

107 lines
3.5 KiB
C

/* $NetBSD: dma_obio.c,v 1.4 2002/03/11 16:27:02 pk Exp $ */
/*-
* Copyright (c) 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Paul Kranenburg.
*
* 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 NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
#include <sys/types.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/errno.h>
#include <sys/device.h>
#include <sys/malloc.h>
#include <machine/bus.h>
#include <machine/autoconf.h>
#include <machine/cpu.h>
#include <dev/sbus/sbusvar.h>
#include <dev/ic/lsi64854reg.h>
#include <dev/ic/lsi64854var.h>
int dmamatch_obio __P((struct device *, struct cfdata *, void *));
void dmaattach_obio __P((struct device *, struct device *, void *));
struct cfattach dma_obio_ca = {
sizeof(struct lsi64854_softc), dmamatch_obio, dmaattach_obio
};
int
dmamatch_obio(parent, cf, aux)
struct device *parent;
struct cfdata *cf;
void *aux;
{
union obio_attach_args *uoba = aux;
struct obio4_attach_args *oba;
if (uoba->uoba_isobio4 == 0)
return (0);
oba = &uoba->uoba_oba4;
return (bus_space_probe(oba->oba_bustag, oba->oba_paddr,
4, /* probe size */
0, /* offset */
0, /* flags */
NULL, NULL));
}
void
dmaattach_obio(parent, self, aux)
struct device *parent, *self;
void *aux;
{
union obio_attach_args *uoba = aux;
struct obio4_attach_args *oba = &uoba->uoba_oba4;
struct lsi64854_softc *sc = (void *)self;
sc->sc_bustag = oba->oba_bustag;
sc->sc_dmatag = oba->oba_dmatag;
if (bus_space_map(oba->oba_bustag, oba->oba_paddr,
4 * sizeof(u_int32_t),
0, &sc->sc_regs) != 0) {
printf("dmaattach_obio: cannot map registers\n");
return;
}
/* Any point in setting `sc_burst' to anything here? */
sc->sc_channel = L64854_CHANNEL_SCSI;
lsi64854_attach(sc);
}