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/* $OpenBSD: lasi.c,v 1.1 1998/11/23 02:55:43 mickey Exp $ */
/*
* Copyright (c) 1998 Michael Shalayeff
* 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 by Michael Shalayeff.
* 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.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/reboot.h>
#include <machine/bus.h>
#include <machine/iomod.h>
#include <machine/autoconf.h>
#include <hppa/dev/cpudevs.h>
#include <hppa/gsc/gscbusvar.h>
struct lasi_softc {
struct device sc_dv;
bus_space_tag_t sc_iot;
bus_space_handle_t sc_ioh;
struct gscbus_ic sc_ic;
};
/* LASI registers definition */
#define LASI_IRR 0x000
#define LASI_IMR 0x004
#define LASI_IPR 0x008
#define LASI_ICR 0x00c
#define LASI_IAR 0x010
#define LASI_POWER 0x800
#define LASI_ERROR 0x804
#define LASI_VERSION 0x808
#define LASI_RESET 0x80c
#define LASI_ARBMASK 0x810
int lasimatch __P((struct device *, void *, void *));
void lasiattach __P((struct device *, struct device *, void *));
struct cfattach lasi_ca = {
sizeof(struct lasi_softc), lasimatch, lasiattach
};
struct cfdriver lasi_cd = {
NULL, "lasi", DV_DULL
};
void lasi_intr_attach __P((void *v, u_int in));
void lasi_intr_establish __P((void *v, u_int32_t mask));
void lasi_intr_disestablish __P((void *v, u_int32_t mask));
u_int32_t lasi_intr_check __P((void *v));
void lasi_intr_ack __P((void *v, u_int32_t mask));
int
lasimatch(parent, cfdata, aux)
struct device *parent;
void *cfdata;
void *aux;
{
struct confargs *ca = aux;
/* struct cfdata *cf = cfdata; */
bus_space_handle_t ioh;
if (ca->ca_type.iodc_type != HPPA_TYPE_BHA ||
ca->ca_type.iodc_sv_model != HPPA_BHA_LASI)
return 0;
if (bus_space_map(ca->ca_iot, ca->ca_hpa, IOMOD_HPASIZE, 0, &ioh))
return 0;
bus_space_unmap(ca->ca_iot, ioh, IOMOD_HPASIZE);
return 1;
}
void
lasiattach(parent, self, aux)
struct device *parent;
struct device *self;
void *aux;
{
register struct confargs *ca = aux;
register struct lasi_softc *sc = (struct lasi_softc *)self;
struct gsc_attach_args ga;
u_int ver;
sc->sc_iot = ca->ca_iot;
if (bus_space_map(sc->sc_iot, ca->ca_hpa, IOMOD_HPASIZE, 0,
&sc->sc_ioh))
panic("lasiattach: unable to map bus space");
/* XXX should we reset the chip here? */
ver = bus_space_read_4(sc->sc_iot, sc->sc_ioh, LASI_VERSION);
printf (": hpa 0x%x, rev %x\n", ca->ca_hpa, ver & 0xff);
sc->sc_ic.gsc_type = gsc_lasi;
sc->sc_ic.gsc_dv = sc;
sc->sc_ic.gsc_intr_attach = lasi_intr_attach;
sc->sc_ic.gsc_intr_establish = lasi_intr_establish;
sc->sc_ic.gsc_intr_disestablish = lasi_intr_disestablish;
sc->sc_ic.gsc_intr_check = lasi_intr_check;
sc->sc_ic.gsc_intr_ack = lasi_intr_ack;
ga.ga_ca = *ca; /* clone from us */
ga.ga_name = "gsc";
ga.ga_ic = &sc->sc_ic;
config_found(self, &ga, gscprint);
}
void
lasi_intr_attach(v, in)
void *v;
u_int in;
{
register struct lasi_softc *sc = v;
hppa_hpa_t cpu_hpa;
cpu_hpa = cpu_gethpa(0);
bus_space_write_4(sc->sc_iot, sc->sc_ioh, LASI_IAR, cpu_hpa | in);
bus_space_write_4(sc->sc_iot, sc->sc_ioh, LASI_ICR, 0);
}
void
lasi_intr_establish(v, mask)
void *v;
u_int32_t mask;
{
register struct lasi_softc *sc = v;
mask |= bus_space_read_4(sc->sc_iot, sc->sc_ioh, LASI_IMR);
bus_space_write_4(sc->sc_iot, sc->sc_ioh, LASI_IMR, mask);
}
void
lasi_intr_disestablish(v, mask)
void *v;
u_int32_t mask;
{
register struct lasi_softc *sc = v;
mask &= ~bus_space_read_4(sc->sc_iot, sc->sc_ioh, LASI_IMR);
bus_space_write_4(sc->sc_iot, sc->sc_ioh, LASI_IMR, mask);
}
u_int32_t
lasi_intr_check(v)
void *v;
{
register struct lasi_softc *sc = v;
register u_int32_t mask, imr;
imr = bus_space_read_4(sc->sc_iot, sc->sc_ioh, LASI_IMR);
mask = bus_space_read_4(sc->sc_iot, sc->sc_ioh, LASI_IRR);
bus_space_write_4(sc->sc_iot, sc->sc_ioh, LASI_IMR, imr & ~mask);
return mask;
}
void
lasi_intr_ack(v, mask)
void *v;
u_int32_t mask;
{
register struct lasi_softc *sc = v;
mask |= bus_space_read_4(sc->sc_iot, sc->sc_ioh, LASI_IMR);
bus_space_write_4(sc->sc_iot, sc->sc_ioh, LASI_IMR, mask);
}
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