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/* $OpenBSD: com_iof.c,v 1.2 2009/10/07 04:17:46 miod Exp $ */
/*
* Copyright (c) 2001-2004 Opsycon AB (www.opsycon.se / www.opsycon.com)
*
* 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/systm.h>
#include <sys/device.h>
#include <sys/tty.h>
#include <machine/autoconf.h>
#include <machine/bus.h>
#include <dev/ic/comreg.h>
#include <dev/ic/comvar.h>
#include <dev/ic/ns16550reg.h>
#include <sgi/pci/iofvar.h>
int com_iof_probe(struct device *, void *, void *);
void com_iof_attach(struct device *, struct device *, void *);
struct cfattach com_iof_ca = {
sizeof(struct com_softc), com_iof_probe, com_iof_attach
};
extern struct cfdriver com_cd;
int
com_iof_probe(struct device *parent, void *match, void *aux)
{
struct iof_attach_args *iaa = aux;
bus_space_tag_t iot = iaa->iaa_memt;
bus_space_handle_t ioh;
int rv = 0, console;
if (strcmp(iaa->iaa_name, com_cd.cd_name) != 0)
return 0;
console = iaa->iaa_memh + iaa->iaa_base ==
comconsiot->bus_base + comconsaddr;
/* if it's in use as console, it's there. */
if (!(console && !comconsattached)) {
if (bus_space_subregion(iot, iaa->iaa_memh,
iaa->iaa_base, COM_NPORTS, &ioh) == 0)
rv = comprobe1(iot, ioh);
} else
rv = 1;
return rv;
}
void
com_iof_attach(struct device *parent, struct device *self, void *aux)
{
struct com_softc *sc = (void *)self;
struct iof_attach_args *iaa = aux;
bus_space_handle_t ioh;
int console;
console = iaa->iaa_memh + iaa->iaa_base ==
comconsiot->bus_base + comconsaddr;
sc->sc_hwflags = 0;
sc->sc_swflags = 0;
/* XXX need to get PCI bus speed from parent */
sc->sc_frequency = 66666667;
if (0)
sc->sc_frequency >>= 1;
/* if it's in use as console, it's there. */
if (!(console && !comconsattached)) {
sc->sc_iot = iaa->iaa_memt;
sc->sc_iobase = iaa->iaa_base;
if (bus_space_subregion(iaa->iaa_memt, iaa->iaa_memh,
iaa->iaa_base, COM_NPORTS, &ioh) != 0) {
printf(": can't map registers\n");
return;
}
} else {
/*
* If we are the console, reuse the existing bus_space
* information, so that comcnattach() invokes bus_space_map()
* with correct parameters.
*/
sc->sc_iot = comconsiot;
sc->sc_iobase = comconsaddr;
sc->sc_frequency = comconsfreq;
if (comcnattach(sc->sc_iot, sc->sc_iobase, TTYDEF_SPEED,
sc->sc_frequency, (TTYDEF_CFLAG & ~(CSIZE | PARENB)) | CS8))
panic("can't setup serial console");
ioh = comconsioh;
}
sc->sc_ioh = ioh;
com_attach_subr(sc);
iof_intr_establish(parent, iaa->iaa_dev, IPL_TTY, comintr,
(void *)sc, sc->sc_dev.dv_xname);
}
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