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/* $OpenBSD: bussw.c,v 1.7 2003/06/02 07:06:56 deraadt 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.
*
* 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/cpu.h>
#include <machine/mioctl.h>
#include <machine/vmparam.h>
#include <mvme88k/dev/busswreg.h>
#include <mvme88k/dev/busswfunc.h>
struct bussw_softc {
struct device sc_dev;
void * sc_paddr;
void * sc_vaddr;
int sc_len;
struct intrhand sc_abih; /* `abort' switch */
struct bussw_reg *sc_bussw;
};
void bussw_attach(struct device *, struct device *, void *);
int bussw_match(struct device *, void *, void *);
struct cfattach bussw_ca = {
sizeof(struct bussw_softc), bussw_match, bussw_attach
};
struct cfdriver bussw_cd = {
NULL, "bussw", DV_DULL, 0
};
int bussw_print(void *args, const char *bus);
int bussw_scan(struct device *parent, void *child, void *args);
int busswabort(void *);
int
bussw_match(parent, vcf, args)
struct device *parent;
void *vcf, *args;
{
struct confargs *ca = args;
struct bussw_reg *bussw;
/* Don't match if wrong cpu */
if (brdtyp != BRD_197) return (0); /* The only one... */
bussw = (struct bussw_reg *)(IIOV(ca->ca_paddr));
if (badvaddr((vm_offset_t)bussw, 4)) {
printf("==> busswitch: failed address check.\n");
return (0);
}
return (1);
}
void
bussw_attach(parent, self, args)
struct device *parent, *self;
void *args;
{
struct confargs *ca = args;
struct bussw_softc *sc = (struct bussw_softc *)self;
struct bussw_reg *bs;
sc->sc_vaddr = sc->sc_paddr = ca->ca_paddr;
bs = sc->sc_bussw = (struct bussw_reg *)sc->sc_vaddr;
bs->bs_intr2 |= BS_VECBASE;
bs->bs_gcsr |= BS_GCSR_XIPL;
/*
* pseudo driver, abort interrupt handler
*/
sc->sc_abih.ih_fn = busswabort;
sc->sc_abih.ih_arg = 0;
sc->sc_abih.ih_wantframe = 1;
sc->sc_abih.ih_ipl = IPL_NMI; /* level 8!! */
busswintr_establish(BS_ABORTIRQ, &sc->sc_abih);
bs->bs_intr1 |= BS_INTR1_ABORT_IEN;
printf(": rev %d\n", BS_CHIPREV(bs));
config_search(bussw_scan, self, args);
}
int
bussw_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
bussw_scan(parent, child, args)
struct device *parent;
void *child, *args;
{
struct cfdata *cf = child;
struct bussw_softc *sc = (struct bussw_softc *)parent;
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_bussw;
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, bussw_print);
return (1);
}
int
busswintr_establish(vec, ih)
int vec;
struct intrhand *ih;
{
if (vec >= BS_NVEC) {
printf("bussw: illegal vector: 0x%x\n", vec);
panic("busswintr_establish");
}
return (intr_establish(BS_VECBASE+vec, ih));
}
int
busswabort(eframe)
void *eframe;
{
struct frame *frame = eframe;
struct bussw_softc *sc = (struct bussw_softc *)bussw_cd.cd_devs[0];
struct bussw_reg *bs = sc->sc_bussw;
if (bs->bs_intr1 & BS_INTR1_ABORT_INT) {
bs->bs_intr1 |= BS_INTR1_ABORT_ICLR;
nmihand(frame);
return 1;
}
return 0;
}
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