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/* $OpenBSD: busswitch.c,v 1.2 2001/02/01 03:38:13 smurph Exp $ */
/*
* Copyright (c) 1999 Steve Murphree, Jr.
*
* 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 under OpenBSD by
* Theo de Raadt for Willowglen Singapore.
* 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/param.h>
#include <sys/kernel.h>
#include <sys/ioctl.h>
#include <sys/device.h>
#include <sys/systm.h>
#include <sys/uio.h>
#include <sys/malloc.h>
#include <machine/psl.h>
#include <machine/autoconf.h>
#include <machine/bugio.h>
#include <machine/cpu.h>
#include <machine/mioctl.h>
#include <machine/vmparam.h>
#include <mvme88k/dev/busswitchreg.h>
struct busswitchsoftc {
struct device sc_dev;
void * sc_paddr;
void * sc_vaddr;
int sc_len;
struct busswitchreg * sc_busswitch;
};
void busswitchattach __P((struct device *, struct device *, void *));
int busswitchmatch __P((struct device *, void *, void *));
struct cfattach busswitch_ca = {
sizeof(struct busswitchsoftc), busswitchmatch, busswitchattach
};
struct cfdriver busswitch_cd = {
NULL, "busswitch", DV_DULL, 0
};
int
busswitchmatch(parent, vcf, args)
struct device *parent;
void *vcf, *args;
{
struct cfdata *cf = vcf;
struct confargs *ca = args;
struct busswitchreg *busswitch;
/* Don't match if wrong cpu */
if (cputyp != CPU_197) return (0);
busswitch = (struct busswitchreg *)(IIOV(ca->ca_paddr));
if (badvaddr(busswitch, 4) <= 0){
printf("==> busswitch: failed address check.\n");
return (0);
}
return (1);
}
void
busswitchattach(parent, self, args)
struct device *parent, *self;
void *args;
{
struct confargs *ca = args;
struct busswitchsoftc *sc = (struct busswitchsoftc *)self;
sc->sc_paddr = ca->ca_paddr;
sc->sc_vaddr = ca->ca_vaddr;
/*
printf(": rev %d\n", sc->sc_busswitch->chiprev);
*/
printf(": rev %d\n", 0);
}
int
busswitch_print(args, bus)
void *args;
const char *bus;
{
struct confargs *ca = args;
if (ca->ca_offset != -1)
printf(" offset 0x%x", ca->ca_offset);
if (ca->ca_ipl > 0)
printf(" ipl %d", ca->ca_ipl);
return (UNCONF);
}
int
busswitch_scan(parent, child, args)
struct device *parent;
void *child, *args;
{
struct cfdata *cf = child;
struct busswitchsoftc *sc = (struct busswitchsoftc *)parent;
struct confargs *ca = args;
struct confargs oca;
if (parent->dv_cfdata->cf_driver->cd_indirect) {
printf(" indirect devices not supported\n");
return 0;
}
bzero(&oca, sizeof oca);
oca.ca_offset = cf->cf_loc[0];
oca.ca_ipl = cf->cf_loc[1];
if (((int)oca.ca_offset != -1) && ISIIOVA(sc->sc_vaddr + oca.ca_offset)) {
oca.ca_vaddr = sc->sc_vaddr + oca.ca_offset;
oca.ca_paddr = sc->sc_paddr + oca.ca_offset;
} else {
oca.ca_vaddr = (void *)-1;
oca.ca_paddr = (void *)-1;
}
oca.ca_bustype = BUS_BUSSWITCH;
oca.ca_master = (void *)sc->sc_busswitch;
oca.ca_name = cf->cf_driver->cd_name;
if ((*cf->cf_attach->ca_match)(parent, cf, &oca) == 0)
return (0);
config_attach(parent, cf, &oca, busswitch_print);
return (1);
}
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