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/* $OpenBSD: lasi.c,v 1.9 2002/04/22 01:48:37 mickey Exp $ */
/*
* Copyright (c) 1998-2002 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 MIND,
* 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.
*/
#undef LASIDEBUG
#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>
#define LASI_IOMASK 0xfff00000
struct lasi_hwr {
u_int32_t lasi_power;
#define LASI_BLINK 0x01
#define LASI_ON 0x02
u_int32_t lasi_error;
u_int32_t lasi_version;
u_int32_t lasi_reset;
u_int32_t lasi_arbmask;
};
struct lasi_trs {
u_int32_t lasi_irr; /* int requset register */
u_int32_t lasi_imr; /* int mask register */
u_int32_t lasi_ipr; /* int pending register */
u_int32_t lasi_icr; /* int command? register */
u_int32_t lasi_iar; /* int acquire? register */
};
struct lasi_softc {
struct device sc_dev;
struct gscbus_ic sc_ic;
struct lasi_hwr volatile *sc_hw;
struct lasi_trs volatile *sc_trs;
struct gsc_attach_args ga; /* for deferred attach */
};
int lasimatch(struct device *, void *, void *);
void lasiattach(struct device *, struct device *, void *);
void lasi_gsc_attach(struct device *);
struct cfattach lasi_ca = {
sizeof(struct lasi_softc), lasimatch, lasiattach
};
struct cfdriver lasi_cd = {
NULL, "lasi", DV_DULL
};
void lasi_intr_establish(void *v, u_int32_t mask);
void lasi_intr_disestablish(void *v, u_int32_t mask);
u_int32_t lasi_intr_check(void *v);
void lasi_intr_ack(void *v, u_int32_t mask);
void lasi_cold_hook(int on);
int
lasimatch(parent, cfdata, aux)
struct device *parent;
void *cfdata;
void *aux;
{
register struct confargs *ca = aux;
/* register struct cfdata *cf = cfdata; */
if (ca->ca_type.iodc_type != HPPA_TYPE_BHA ||
ca->ca_type.iodc_sv_model != HPPA_BHA_LASI)
return 0;
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;
bus_space_handle_t ioh;
int s, in;
if (bus_space_map(ca->ca_iot, ca->ca_hpa + 0xc000,
IOMOD_HPASIZE, 0, &ioh)) {
#ifdef DEBUG
printf("lasiattach: can't map IO space\n");
#endif
return;
}
sc->sc_trs = (struct lasi_trs *)ca->ca_hpa;
sc->sc_hw = (struct lasi_hwr *)(ca->ca_hpa + 0xc000);
/* XXX should we reset the chip here? */
printf (": rev %d.%d\n", (sc->sc_hw->lasi_version & 0xf0) >> 4,
sc->sc_hw->lasi_version & 0xf);
/* interrupts guts */
s = splhigh();
sc->sc_trs->lasi_iar = cpu_gethpa(0) | (31 - ca->ca_irq);
sc->sc_trs->lasi_icr = 0;
sc->sc_trs->lasi_imr = ~0U;
in = sc->sc_trs->lasi_irr;
sc->sc_trs->lasi_imr = 0;
splx(s);
sc->sc_ic.gsc_type = gsc_lasi;
sc->sc_ic.gsc_dv = sc;
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;
sc->ga.ga_ca = *ca; /* clone from us */
sc->ga.ga_hpamask = LASI_IOMASK;
if (sc->sc_dev.dv_unit)
config_defer(self, lasi_gsc_attach);
else {
extern void (*cold_hook)(int);
lasi_gsc_attach(self);
cold_hook = lasi_cold_hook;
}
}
void
lasi_gsc_attach(self)
struct device *self;
{
struct lasi_softc *sc = (struct lasi_softc *)self;
sc->ga.ga_name = "gsc";
sc->ga.ga_ic = &sc->sc_ic;
config_found(self, &sc->ga, gscprint);
}
void
lasi_cold_hook(on)
int on;
{
register struct lasi_softc *sc = lasi_cd.cd_devs[0];
if (!sc)
return;
switch (on) {
case HPPA_COLD_COLD:
sc->sc_hw->lasi_power = LASI_BLINK;
break;
case HPPA_COLD_HOT:
sc->sc_hw->lasi_power = 0;
break;
case HPPA_COLD_OFF:
sc->sc_hw->lasi_power = LASI_BLINK;
break;
}
}
void
lasi_intr_establish(v, mask)
void *v;
u_int32_t mask;
{
register struct lasi_softc *sc = v;
sc->sc_trs->lasi_imr |= mask;
}
void
lasi_intr_disestablish(v, mask)
void *v;
u_int32_t mask;
{
register struct lasi_softc *sc = v;
sc->sc_trs->lasi_imr &= ~mask;
}
u_int32_t
lasi_intr_check(v)
void *v;
{
register struct lasi_softc *sc = v;
register u_int32_t irr, imr, ipr;
imr = sc->sc_trs->lasi_imr;
ipr = sc->sc_trs->lasi_ipr;
irr = sc->sc_trs->lasi_irr;
sc->sc_trs->lasi_irr = irr;
#ifdef LASIDEBUG
printf ("%s: imr=0x%x, irr=0x%x, ipr=0x%x, iar=0x%x, icr=0x%x\n",
sc->sc_dev.dv_xname, imr, irr, ipr,
sc->sc_trs->lasi_iar, sc->sc_trs->lasi_icr);
#endif
return irr;
}
void
lasi_intr_ack(v, mask)
void *v;
u_int32_t mask;
{
register struct lasi_softc *sc = v;
sc->sc_trs->lasi_imr |= mask;
}
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