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/* $OpenBSD: uturn.c,v 1.7 2010/04/29 13:48:29 jsing Exp $ */
/*
* Copyright (c) 2004 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.
*
* 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 OR HIS RELATIVES 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.
*/
/* TODO IOA programming */
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/reboot.h>
#include <machine/iomod.h>
#include <machine/autoconf.h>
#include <hppa/dev/cpudevs.h>
struct uturn_regs {
u_int64_t resv0[2];
u_int64_t status; /* 0x10: */
u_int64_t resv1[5];
u_int64_t debug; /* 0x40: */
};
struct uturn_softc {
struct device sc_dv;
struct uturn_regs volatile *sc_regs;
};
int uturnmatch(struct device *, void *, void *);
void uturnattach(struct device *, struct device *, void *);
struct cfattach uturn_ca = {
sizeof(struct uturn_softc), uturnmatch, uturnattach
};
struct cfdriver uturn_cd = {
NULL, "uturn", DV_DULL
};
int
uturnmatch(parent, cfdata, aux)
struct device *parent;
void *cfdata;
void *aux;
{
struct confargs *ca = aux;
/* struct cfdata *cf = cfdata; */
/* there will be only one */
if (ca->ca_type.iodc_type != HPPA_TYPE_IOA ||
ca->ca_type.iodc_sv_model != HPPA_IOA_UTURN)
return 0;
if (ca->ca_type.iodc_model == 0x58 &&
ca->ca_type.iodc_revision >= 0x20)
return 0;
return 1;
}
void
uturnattach(parent, self, aux)
struct device *parent;
struct device *self;
void *aux;
{
struct confargs *ca = aux, nca;
struct uturn_softc *sc = (struct uturn_softc *)self;
bus_space_handle_t ioh;
hppa_hpa_t hpa;
if (bus_space_map(ca->ca_iot, ca->ca_hpa, IOMOD_HPASIZE, 0, &ioh)) {
printf(": can't map IO space\n");
return;
}
sc->sc_regs = (struct uturn_regs *)ca->ca_hpa;
printf(": %s rev %d\n",
ca->ca_type.iodc_revision < 0x10? "U2" : "UTurn",
ca->ca_type.iodc_revision & 0xf);
/* keep it real */
((struct iomod *)ioh)->io_control = 0x80;
/*
* U2/UTurn is actually a combination of an Upper Bus
* Converter (UBC) and a Lower Bus Converter (LBC). This
* driver attaches to the UBC; the LBC isn't very interesting,
* so we skip it. This is easy, since it always is module 63,
* hence the MAXMODBUS - 1 below.
*/
nca = *ca;
nca.ca_hpamask = HPPA_IOBEGIN;
pdc_scanbus(self, &nca, MAXMODBUS - 1, 0, 0);
/* XXX On some machines, PDC doesn't tell us about all devices. */
switch (cpu_hvers) {
case HPPA_BOARD_HP809:
case HPPA_BOARD_HP819:
case HPPA_BOARD_HP829:
case HPPA_BOARD_HP839:
case HPPA_BOARD_HP849:
case HPPA_BOARD_HP859:
case HPPA_BOARD_HP869:
hpa = ((struct iomod *)ioh)->io_io_low << 16;
pdc_scanbus(self, &nca, MAXMODBUS - 1, hpa, 0);
break;
default:
break;
}
}
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