NetBSD/sys/arch/arm/iomd/vidc20.c

203 lines
5.2 KiB
C

/* $NetBSD: vidc20.c,v 1.1 2001/10/05 22:27:43 reinoud Exp $ */
/*
* Copyright (c) 1997 Mark Brinicombe
* Copyright (c) 1997 Causality Limited
* 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 Mark Brinicombe
* 4. The name of the company nor the name of the author may 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 AUTHORS OR CONTRIBUTORS 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.
*
* RiscBSD kernel project
*
* vidc20.c
*
* VIDC20 driver
*
* Created : 22/02/97
*/
#include <sys/cdefs.h>
#include <sys/types.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <machine/bus.h>
#include <arm/iomd/vidc.h>
#include <machine/io.h>
#include <arm/iomd/iomdreg.h>
#include <arm/iomd/iomdvar.h>
#include <arm/mainbus/mainbus.h>
#include "locators.h"
struct vidc20_softc {
struct device sc_dev;
bus_space_tag_t sc_iot;
};
static int vidcmatch __P((struct device *self, struct cfdata *cf, void *aux));
static void vidcattach __P((struct device *parent, struct device *self, void *aux));
static int vidcprint __P((void *aux, const char *name));
static int vidcsearch __P((struct device *, struct cfdata *, void *));
/*
* vidc_base gives the base of the VIDC chip in memory; this is for the rest isnt
* busspaceified yet. Initialised with VIDC_BASE for backwards compatibility.
*/
int *vidc_base = (int *) VIDC_BASE;
/*
* vidc_fref is the reference frequency in Mhz of the detected VIDC (dependent on IOMD/IOC)
* XXX default is RPC600 ?
*/
int vidc_fref = 24000000;
struct cfattach vidc_ca = {
sizeof (struct vidc20_softc), vidcmatch, vidcattach
};
/*
* vidcmatch()
*
* VIDC20 is a write only device so we cannot probe it
* We must assume things are ok.
*/
static int
vidcmatch(parent, cf, aux)
struct device *parent;
struct cfdata *cf;
void *aux;
{
/* struct mainbus_attach_args *mb = aux;*/
return(1);
}
/*
* vidcprint()
*
* print routine used during config of children
*/
static int
vidcprint(aux, name)
void *aux;
const char *name;
{
struct mainbus_attach_args *mb = aux;
if (mb->mb_iobase != MAINBUSCF_BASE_DEFAULT)
printf(" base 0x%x", mb->mb_iobase);
if (mb->mb_iosize > 1)
printf("-0x%x", mb->mb_iobase + mb->mb_iosize - 1);
if (mb->mb_irq != -1)
printf(" irq %d", mb->mb_irq);
if (mb->mb_drq != -1)
printf(" drq 0x%08x", mb->mb_drq);
/* XXXX print flags */
return (QUIET);
}
/*
* vidcsearch()
*
* search routine used during the config of children
*/
static int
vidcsearch(parent, cf, aux)
struct device *parent;
struct cfdata *cf;
void *aux;
{
struct vidc20_softc *sc = (struct vidc20_softc *)parent;
struct mainbus_attach_args mb;
int tryagain;
do {
if (cf->cf_loc[MAINBUSCF_BASE] == MAINBUSCF_BASE_DEFAULT) {
mb.mb_iobase = MAINBUSCF_BASE_DEFAULT;
mb.mb_iosize = 0;
mb.mb_drq = MAINBUSCF_DACK_DEFAULT;
mb.mb_irq = MAINBUSCF_IRQ_DEFAULT;
} else {
mb.mb_iobase = cf->cf_loc[MAINBUSCF_BASE] + IO_CONF_BASE;
mb.mb_iosize = 0;
mb.mb_drq = cf->cf_loc[MAINBUSCF_DACK];
mb.mb_irq = cf->cf_loc[MAINBUSCF_IRQ];
}
mb.mb_iot = sc->sc_iot;
tryagain = 0;
if ((*cf->cf_attach->ca_match)(parent, cf, &mb) > 0) {
config_attach(parent, cf, &mb, vidcprint);
/* tryagain = (cf->cf_fstate == FSTATE_STAR);*/
}
} while (tryagain);
return (0);
}
/*
* vidcattach()
*
* Configure all the child devices of the VIDC
*/
static void
vidcattach(parent, self, aux)
struct device *parent;
struct device *self;
void *aux;
{
struct vidc20_softc *sc = (struct vidc20_softc *)self;
struct mainbus_attach_args *mb = aux;
sc->sc_iot = mb->mb_iot;
printf(": vidc20\n");
switch (IOMD_ID) {
case ARM7500_IOC_ID:
case ARM7500FE_IOC_ID:
vidc_fref = 32000000;
break;
default: /* XXX default? */
case RPC600_IOMD_ID:
vidc_fref = 24000000;
break;
};
config_search(vidcsearch, self, NULL);
}
/* End of vidc20.c */