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/*-
* Copyright (c) 2010 Aleksandr Rybalko.
* 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/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/interrupt.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/rman.h>
#include <sys/malloc.h>
#include <machine/bus.h>
#include <mips/rt305x/rt305xreg.h>
#include <mips/rt305x/rt305x_icvar.h>
static int rt305x_ic_probe(device_t);
static int rt305x_ic_attach(device_t);
static int rt305x_ic_detach(device_t);
static struct rt305x_ic_softc *rt305x_ic_softc = NULL;
static int
rt305x_ic_probe(device_t dev)
{
device_set_desc(dev, "RT305X Interrupt Controller driver");
return (0);
}
static int
rt305x_ic_attach(device_t dev)
{
struct rt305x_ic_softc *sc = device_get_softc(dev);
int error = 0;
KASSERT((device_get_unit(dev) == 0),
("rt305x_ic: Only one Interrupt Controller module supported"));
if (rt305x_ic_softc != NULL)
return (ENXIO);
rt305x_ic_softc = sc;
/* Map control/status registers. */
sc->mem_rid = 0;
sc->mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
&sc->mem_rid, RF_ACTIVE);
if (sc->mem_res == NULL) {
device_printf(dev, "couldn't map memory\n");
error = ENXIO;
rt305x_ic_detach(dev);
return(error);
}
return (bus_generic_attach(dev));
}
static int
rt305x_ic_detach(device_t dev)
{
struct rt305x_ic_softc *sc = device_get_softc(dev);
bus_generic_detach(dev);
if (sc->mem_res)
bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid,
sc->mem_res);
return(0);
}
uint32_t
rt305x_ic_get(uint32_t reg)
{
struct rt305x_ic_softc *sc = rt305x_ic_softc;
if (!sc)
return (0);
return (bus_read_4(sc->mem_res, reg));
}
void
rt305x_ic_set(uint32_t reg, uint32_t val)
{
struct rt305x_ic_softc *sc = rt305x_ic_softc;
if (!sc)
return;
bus_write_4(sc->mem_res, reg, val);
return;
}
static device_method_t rt305x_ic_methods[] = {
DEVMETHOD(device_probe, rt305x_ic_probe),
DEVMETHOD(device_attach, rt305x_ic_attach),
DEVMETHOD(device_detach, rt305x_ic_detach),
{0, 0},
};
static driver_t rt305x_ic_driver = {
"rt305x_ic",
rt305x_ic_methods,
sizeof(struct rt305x_ic_softc),
};
static devclass_t rt305x_ic_devclass;
DRIVER_MODULE(rt305x_ic, obio, rt305x_ic_driver, rt305x_ic_devclass, 0, 0);
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