NetBSD/sys/arch/atari/isa/isa_machdep.c

154 lines
4.2 KiB
C

/* $NetBSD: isa_machdep.c,v 1.22 2001/04/24 06:39:48 leo Exp $ */
/*
* Copyright (c) 1997 Leo Weppelman. All rights reserved.
* Copyright (c) 1996 Christopher G. Demetriou. All rights reserved.
* Copyright (c) 1994 Charles M. Hannum. 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 Charles M. Hannum.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* 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.
*/
#include <sys/types.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#define _ATARI_BUS_DMA_PRIVATE
#include <machine/bus.h>
#include <dev/isa/isavar.h>
#include <dev/isa/isareg.h>
#include <machine/iomap.h>
#include <machine/mfp.h>
#include <atari/atari/device.h>
#include "isadma.h"
#if NISADMA == 0
/*
* Entry points for ISA DMA while no DMA capable devices are attached.
* This must be a serious error. Cause a panic...
*/
struct atari_bus_dma_tag isa_bus_dma_tag = {
0
};
#endif /* NISADMA == 0 */
static int isabusprint __P((void *auxp, const char *));
static int isabusmatch __P((struct device *, struct cfdata *, void *));
static void isabusattach __P((struct device *, struct device *, void *));
struct isabus_softc {
struct device sc_dev;
struct atari_isa_chipset sc_chipset;
};
struct cfattach isabus_ca = {
sizeof(struct isabus_softc), isabusmatch, isabusattach
};
int
isabusmatch(pdp, cfp, auxp)
struct device *pdp;
struct cfdata *cfp;
void *auxp;
{
static int nmatched = 0;
if (strcmp((char *)auxp, "isabus"))
return (0); /* Wrong number... */
if(atari_realconfig == 0)
return (0);
if (machineid & (ATARI_HADES|ATARI_MILAN)) {
/*
* The Hades and Milan have only one pci bus
*/
if (nmatched)
return (0);
nmatched++;
return (1);
}
return(0);
}
void
isabusattach(pdp, dp, auxp)
struct device *pdp, *dp;
void *auxp;
{
struct isabus_softc *sc = (struct isabus_softc *)dp;
struct isabus_attach_args iba;
extern struct atari_bus_dma_tag isa_bus_dma_tag;
extern void isa_bus_init(void);
iba.iba_busname = "isa";
iba.iba_dmat = &isa_bus_dma_tag;
iba.iba_iot = leb_alloc_bus_space_tag(NULL);
iba.iba_memt = leb_alloc_bus_space_tag(NULL);
iba.iba_ic = &sc->sc_chipset;
if ((iba.iba_iot == NULL) || (iba.iba_memt == NULL)) {
printf("leb_alloc_bus_space_tag failed!\n");
return;
}
iba.iba_iot->base = ISA_IOSTART;
iba.iba_memt->base = ISA_MEMSTART;
if (machineid & ATARI_HADES)
MFP->mf_aer |= (IO_ISA1|IO_ISA2); /* ISA interrupts: LOW->HIGH */
isa_bus_init();
printf("\n");
config_found(dp, &iba, isabusprint);
}
int
isabusprint(auxp, name)
void *auxp;
const char *name;
{
if(name == NULL)
return(UNCONF);
return(QUIET);
}
void
isa_attach_hook(parent, self, iba)
struct device *parent, *self;
struct isabus_attach_args *iba;
{
}
const struct evcnt *
isa_intr_evcnt(isa_chipset_tag_t ic, int irq)
{
/* XXX for now, no evcnt parent reported */
return NULL;
}