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/* $OpenBSD: mc.c,v 1.5 1996/11/23 21:45:59 kstailey Exp $ */
/*
* Copyright (c) 1995 Theo de Raadt
* 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 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.
*/
/*
* VME162 MCchip
*/
#include <sys/param.h>
#include <sys/conf.h>
#include <sys/ioctl.h>
#include <sys/proc.h>
#include <sys/user.h>
#include <sys/tty.h>
#include <sys/uio.h>
#include <sys/callout.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/syslog.h>
#include <sys/fcntl.h>
#include <sys/device.h>
#include <machine/cpu.h>
#include <machine/autoconf.h>
#include <dev/cons.h>
#include <mvme68k/dev/mcreg.h>
struct mcsoftc {
struct device sc_dev;
void *sc_vaddr;
void *sc_paddr;
struct mcreg *sc_mc;
struct intrhand sc_nmiih;
};
void mcattach __P((struct device *, struct device *, void *));
int mcmatch __P((struct device *, void *, void *));
int mcabort __P((struct frame *));
struct cfattach mc_ca = {
sizeof(struct mcsoftc), mcmatch, mcattach
};
struct cfdriver mc_cd = {
NULL, "mc", DV_DULL, 0
};
struct mcreg *sys_mc = NULL;
int
mcmatch(parent, vcf, args)
struct device *parent;
void *vcf, *args;
{
struct cfdata *cf = vcf;
struct confargs *ca = args;
struct mcreg *mc = (struct mcreg *)(IIOV(ca->ca_paddr) + MC_MCCHIP_OFF);
if (cputyp != CPU_162 || badvaddr(mc, 1) ||
mc->mc_chipid != MC_CHIPID)
return (0);
return (1);
}
int
mc_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
mc_scan(parent, child, args)
struct device *parent;
void *child, *args;
{
struct cfdata *cf = child;
struct mcsoftc *sc = (struct mcsoftc *)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 (oca.ca_offset != -1 && ISIIOVA(sc->sc_vaddr + oca.ca_offset)) {
oca.ca_paddr = sc->sc_paddr + oca.ca_offset;
oca.ca_vaddr = sc->sc_vaddr + oca.ca_offset;
} else {
oca.ca_paddr = (void *)-1;
oca.ca_vaddr = (void *)-1;
}
oca.ca_bustype = BUS_MC;
oca.ca_master = (void *)sc->sc_mc;
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, mc_print);
return (1);
}
void
mcattach(parent, self, args)
struct device *parent, *self;
void *args;
{
struct confargs *ca = args;
struct mcsoftc *sc = (struct mcsoftc *)self;
int i;
if (sys_mc)
panic("mc already attached!");
/*
* since we know ourself to land in intiobase land,
* we must adjust our address
*/
sc->sc_paddr = ca->ca_paddr;
sc->sc_vaddr = (void *)IIOV(sc->sc_paddr);
sc->sc_mc = (struct mcreg *)(sc->sc_vaddr + MC_MCCHIP_OFF);
sys_mc = sc->sc_mc;
printf(": rev %d\n", sc->sc_mc->mc_chiprev);
sc->sc_nmiih.ih_fn = mcabort;
sc->sc_nmiih.ih_arg = 0;
sc->sc_nmiih.ih_ipl = 7;
sc->sc_nmiih.ih_wantframe = 1;
mcintr_establish(MCV_ABORT, &sc->sc_nmiih);
sc->sc_mc->mc_abortirq = 7 | MC_IRQ_IEN | MC_IRQ_ICLR;
sc->sc_mc->mc_vecbase = MC_VECBASE;
sc->sc_mc->mc_genctl |= MC_GENCTL_IEN; /* global irq enable */
config_search(mc_scan, self, args);
}
/*
* MC interrupts land in a MC_NVEC sized hole starting at MC_VECBASE
*/
int
mcintr_establish(vec, ih)
int vec;
struct intrhand *ih;
{
if (vec >= MC_NVEC) {
printf("mc: illegal vector: 0x%x\n", vec);
panic("mcintr_establish");
}
return (intr_establish(MC_VECBASE+vec, ih));
}
int
mcabort(frame)
struct frame *frame;
{
/* wait for it to debounce */
while (sys_mc->mc_abortirq & MC_ABORT_ABS)
;
sys_mc->mc_abortirq = sys_mc->mc_abortirq | MC_IRQ_ICLR;
nmihand(frame);
return (1);
}
#include "flash.h"
#if NFLASH > 0
void
mc_enableflashwrite(on)
int on;
{
struct mcsoftc *sc = (struct mcsoftc *) mc_cd.cd_devs[0];
volatile u_char *ena, x;
ena = (u_char *)sc->sc_vaddr +
(on ? MC_ENAFLASHWRITE_OFFSET : MC_DISFLASHWRITE_OFFSET);
x = *ena;
}
#endif
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