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/* $OpenBSD: com_obio.c,v 1.3 2009/09/06 20:09:34 kettenis Exp $ */
/*
* Copyright (c) 2008 Mark Kettenis
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/tty.h>
#include <machine/autoconf.h>
#include <dev/ofw/openfirm.h>
#include <dev/ic/comreg.h>
#include <dev/ic/comvar.h>
int com_obio_match(struct device *, void *, void *);
void com_obio_attach(struct device *, struct device *, void *);
struct cfattach com_obio_ca = {
sizeof(struct com_softc), com_obio_match, com_obio_attach
};
struct cfdriver com_obio_cd = {
NULL, "com", DV_DULL
};
int
com_obio_match(struct device *parent, void *cfdata, void *aux)
{
struct obio_attach_args *oa = aux;
char buf[32];
if (OF_getprop(oa->oa_node, "device_type", buf, sizeof(buf)) <= 0 ||
strcmp(buf, "serial") != 0)
return (0);
if (OF_getprop(oa->oa_node, "compatible", buf, sizeof(buf)) <= 0 ||
strcmp(buf, "ns16550") != 0)
return (0);
return (1);
}
void
com_obio_attach(struct device *parent, struct device *self, void *aux)
{
struct com_softc *sc = (void *)self;
struct obio_attach_args *oa = aux;
int freq;
if (OF_getprop(oa->oa_node, "clock-frequency", &freq,
sizeof(freq))!= sizeof(freq)) {
printf(": unknown clock frequency\n");
return;
}
sc->sc_iot = oa->oa_iot;
sc->sc_iobase = oa->oa_offset;
sc->sc_frequency = freq;
if (sc->sc_iobase != comconsaddr) {
if (bus_space_map(sc->sc_iot, sc->sc_iobase,
COM_NPORTS, 0, &sc->sc_ioh)) {
printf(": can't map registers\n");
return;
}
} else
sc->sc_ioh = comconsioh;
com_attach_subr(sc);
intr_establish(oa->oa_ivec, IST_LEVEL, IPL_TTY, comintr,
sc, sc->sc_dev.dv_xname);
}
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