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/* $OpenBSD: pcctwo.c,v 1.17 2003/06/02 07:06:56 deraadt 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.
*
* 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.
*/
/*
* VME18x PCC2 chip
*/
#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/systm.h>
#include <sys/kernel.h>
#include <sys/syslog.h>
#include <sys/fcntl.h>
#include <sys/device.h>
#include <machine/autoconf.h>
#include <machine/cpu.h>
#include <dev/cons.h>
#include <mvme88k/dev/pcctwofunc.h>
#include <mvme88k/dev/pcctworeg.h>
#include "bussw.h"
struct pcctwosoftc {
struct device sc_dev;
void *sc_vaddr; /* PCC2 space */
void *sc_paddr;
struct pcctworeg *sc_pcc2; /* the actual registers */
};
void pcctwoattach(struct device *, struct device *, void *);
int pcctwomatch(struct device *, void *, void *);
struct cfattach pcctwo_ca = {
sizeof(struct pcctwosoftc), pcctwomatch, pcctwoattach
};
struct cfdriver pcctwo_cd = {
NULL, "pcctwo", DV_DULL, 0
};
struct pcctworeg *sys_pcc2 = NULL;
int pcc2bus;
int pcctwo_print(void *args, const char *bus);
int pcctwo_scan(struct device *parent, void *child, void *args);
int
pcctwomatch(parent, vcf, args)
struct device *parent;
void *vcf, *args;
{
struct confargs *ca = args;
struct pcctworeg *pcc2;
/* Bomb if wrong cpu */
switch (brdtyp) {
case BRD_187:
pcc2 = (struct pcctworeg *)(IIOV(ca->ca_paddr) + PCC2_PCC2CHIP_OFF);
break;
case BRD_197: /* pcctwo is a child of buswitch XXX smurph */
pcc2 = (struct pcctworeg *)(IIOV(ca->ca_paddr));
break;
default:
/* Bomb if wrong board */
return (0);
}
if (badvaddr((vm_offset_t)pcc2, 4)) {
printf("==> pcctwo: failed address check.\n");
return (0);
}
if (pcc2->pcc2_chipid != PCC2_CHIPID) {
printf("==> pcctwo: wrong chip id %x.\n", pcc2->pcc2_chipid);
return (0);
}
return (1);
}
int
pcctwo_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
pcctwo_scan(parent, child, args)
struct device *parent;
void *child, *args;
{
struct cfdata *cf = child;
struct pcctwosoftc *sc = (struct pcctwosoftc *)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_PCCTWO;
oca.ca_master = (void *)sc->sc_pcc2;
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, pcctwo_print);
return (1);
}
void
pcctwoattach(parent, self, args)
struct device *parent, *self;
void *args;
{
struct confargs *ca = args;
struct pcctwosoftc *sc = (struct pcctwosoftc *)self;
if (sys_pcc2)
panic("pcc2 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);
pcc2bus = ca->ca_bustype;
switch (pcc2bus) {
case BUS_MAIN:
sc->sc_pcc2 = (struct pcctworeg *)(sc->sc_vaddr + PCC2_PCC2CHIP_OFF);
break;
#if NBUSSW > 0
case BUS_BUSSWITCH:
sc->sc_pcc2 = (struct pcctworeg *)sc->sc_vaddr;
/*
* fake up our address so that pcc2 child devices
* are offeset of 0xFFF00000 - XXX smurph
*/
sc->sc_paddr -= PCC2_PCC2CHIP_OFF;
sc->sc_vaddr -= PCC2_PCC2CHIP_OFF;
/* make sure the bus is mc68040 compatible */
sc->sc_pcc2->pcc2_genctl |= PCC2_GENCTL_C040;
break;
#endif
}
sys_pcc2 = sc->sc_pcc2;
printf(": rev %d\n", sc->sc_pcc2->pcc2_chiprev);
sc->sc_pcc2->pcc2_vecbase = PCC2_VECBASE;
sc->sc_pcc2->pcc2_genctl |= PCC2_GENCTL_IEN; /* global irq enable */
config_search(pcctwo_scan, self, args);
}
/*
* PCC2 interrupts land in a PCC2_NVEC sized hole starting at PCC2_VECBASE
*/
int
pcctwointr_establish(vec, ih)
int vec;
struct intrhand *ih;
{
if (vec >= PCC2_NVEC) {
printf("pcctwo: illegal vector: 0x%x\n", vec);
panic("pcctwointr_establish");
}
return (intr_establish(PCC2_VECBASE+vec, ih));
}
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