107 lines
3.1 KiB
C
107 lines
3.1 KiB
C
/* $NetBSD: vrdsu.c,v 1.4 2002/01/27 14:18:12 takemura Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1999 Shin Takemura All rights reserved.
|
|
* Copyright (c) 1999 PocketBSD Project. 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 AND CONTRIBUTORS ``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 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.
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/device.h>
|
|
|
|
#include <machine/bus.h>
|
|
|
|
#include <hpcmips/vr/vripif.h>
|
|
#include <hpcmips/vr/dsureg.h>
|
|
#include <hpcmips/vr/vrdsuvar.h>
|
|
|
|
struct vrdsu_softc {
|
|
struct device sc_dev;
|
|
bus_space_tag_t sc_iot;
|
|
bus_space_handle_t sc_ioh;
|
|
};
|
|
|
|
static int vrdsumatch(struct device *, struct cfdata *, void *);
|
|
static void vrdsuattach(struct device *, struct device *, void *);
|
|
|
|
static void vrdsu_write(struct vrdsu_softc *, int, unsigned short);
|
|
static unsigned short vrdsu_read(struct vrdsu_softc *, int);
|
|
|
|
struct cfattach vrdsu_ca = {
|
|
sizeof(struct vrdsu_softc), vrdsumatch, vrdsuattach
|
|
};
|
|
|
|
struct vrdsu_softc *the_dsu_sc = NULL;
|
|
|
|
static inline void
|
|
vrdsu_write(struct vrdsu_softc *sc, int port, unsigned short val)
|
|
{
|
|
|
|
bus_space_write_2(sc->sc_iot, sc->sc_ioh, port, val);
|
|
}
|
|
|
|
static inline unsigned short
|
|
vrdsu_read(struct vrdsu_softc *sc, int port)
|
|
{
|
|
|
|
return (bus_space_read_2(sc->sc_iot, sc->sc_ioh, port));
|
|
}
|
|
|
|
static int
|
|
vrdsumatch(struct device *parent, struct cfdata *cf, void *aux)
|
|
{
|
|
|
|
return (1);
|
|
}
|
|
|
|
static void
|
|
vrdsuattach(struct device *parent, struct device *self, void *aux)
|
|
{
|
|
struct vrdsu_softc *sc = (struct vrdsu_softc *)self;
|
|
struct vrip_attach_args *va = aux;
|
|
|
|
sc->sc_iot = va->va_iot;
|
|
if (bus_space_map(va->va_iot, va->va_addr, va->va_size,
|
|
0, &sc->sc_ioh)) {
|
|
printf(": can't map bus space\n");
|
|
return;
|
|
}
|
|
printf("\n");
|
|
the_dsu_sc = sc;
|
|
}
|
|
|
|
void
|
|
vrdsu_reset()
|
|
{
|
|
|
|
if (the_dsu_sc) {
|
|
splhigh();
|
|
vrdsu_write(the_dsu_sc, DSUSET_REG_W, 1); /* 1 sec */
|
|
vrdsu_write(the_dsu_sc, DSUCNT_REG_W, DSUCNT_DSWEN);
|
|
while (1);
|
|
} else {
|
|
printf("%s(%d): There is no DSU.", __FILE__, __LINE__);
|
|
}
|
|
}
|