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/* $OpenBSD: uni_n.c,v 1.14 2006/02/14 23:06:41 kettenis Exp $ */
/*
* Copyright (c) 1998-2001 Dale Rahn.
* 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.
*/
#include <sys/param.h>
#include <sys/device.h>
#include <sys/systm.h>
#include <machine/bus.h>
#include <machine/autoconf.h>
#include <dev/ofw/openfirm.h>
struct memc_softc {
struct device sc_dev;
char *baseaddr;
struct ppc_bus_space sc_membus_space;
};
int memcmatch(struct device *, void *, void *);
void memcattach(struct device *, struct device *, void *);
void memc_attach_children(struct memc_softc *sc, int memc_node);
int memc_print(void *aux, const char *name);
/* Driver definition */
struct cfdriver memc_cd = {
NULL, "memc", DV_DULL
};
/* Driver definition */
struct cfattach memc_ca = {
sizeof(struct memc_softc), memcmatch, memcattach
};
void *uni_n_config(int handle);
int
memcmatch(struct device *parent, void *cf, void *aux)
{
struct confargs *ca = aux;
static int memc_attached = 0;
/* allow only one instance */
if (memc_attached == 0) {
if (0 == strcmp (ca->ca_name, "memc"))
return 1;
}
return 0;
}
void
memcattach(struct device *parent, struct device *self, void *aux)
{
struct confargs *ca = aux;
int len;
char name[64];
struct memc_softc *sc = (struct memc_softc *)self;
len = OF_getprop(ca->ca_node, "name", name, sizeof name);
if (len > 0)
name[len] = 0;
if (strcmp(name, "uni-n") == 0 || strcmp(name, "u3") == 0
|| strcmp(name, "u4") == 0)
sc->baseaddr = uni_n_config(ca->ca_node);
printf (": %s\n", name);
memc_attach_children(sc, ca->ca_node);
}
void
memc_attach_children(struct memc_softc *sc, int memc_node)
{
struct confargs ca;
int node, namelen;
u_int32_t reg[20];
int32_t intr[8];
char name[32];
sc->sc_membus_space.bus_base = ca.ca_baseaddr;
ca.ca_iot = &sc->sc_membus_space;
ca.ca_dmat = 0; /* XXX */
ca.ca_baseaddr = 0; /* XXX */
sc->sc_membus_space.bus_base = ca.ca_baseaddr;
for (node = OF_child(memc_node); node; node = OF_peer(node)) {
namelen = OF_getprop(node, "name", name, sizeof(name));
if (namelen < 0)
continue;
if (namelen >= sizeof(name))
continue;
name[namelen] = 0;
ca.ca_name = name;
ca.ca_node = node;
ca.ca_nreg = OF_getprop(node, "reg", reg, sizeof(reg));
ca.ca_reg = reg;
ca.ca_nintr = 0; /* XXX */
ca.ca_intr = intr; /* XXX */
config_found((struct device *)sc, &ca, memc_print);
}
}
int
memc_print(void *aux, const char *name)
{
struct confargs *ca = aux;
/* we dont want extra stuff printing */
if (name)
printf("\"%s\" at %s", ca->ca_name, name);
if (ca->ca_nreg > 0)
printf(" offset 0x%x", ca->ca_reg[0]);
return UNCONF;
}
void *
uni_n_config(int handle)
{
char name[20];
char *baseaddr;
int *ctladdr;
u_int32_t address;
if (OF_getprop(handle, "name", name, sizeof name) > 0) {
/* sanity test */
if (strcmp (name, "uni-n") == 0 || strcmp (name, "u3") == 0
|| strcmp (name, "u4") == 0) {
if (OF_getprop(handle, "reg", &address,
sizeof address) > 0) {
baseaddr = mapiodev(address, NBPG);
ctladdr = (void *)(baseaddr + 0x20);
*ctladdr |= 0x02;
return baseaddr;
}
}
}
return 0;
}
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