/*-
* Copyright (c) 2018-2020 Ruslan Bukin
* All rights reserved.
*
* This software was developed by BAE Systems, the University of Cambridge
* Computer Laboratory, and Memorial University under DARPA/AFRL contract
* FA8650-15-C-7558 ("CADETS"), as part of the DARPA Transparent Computing
* (TC) research program.
*
* 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
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include "coresight_if.h"
static struct resource_spec replicator_spec[] = {
{ SYS_RES_MEMORY, 0, RF_ACTIVE },
{ -1, 0 }
};
static int
replicator_init(device_t dev)
{
struct replicator_softc *sc;
sc = device_get_softc(dev);
/* Unlock Coresight */
bus_write_4(sc->res, CORESIGHT_LAR, CORESIGHT_UNLOCK);
return (0);
}
static int
replicator_enable(device_t dev, struct endpoint *endp,
struct coresight_event *event)
{
struct replicator_softc *sc;
sc = device_get_softc(dev);
/* Enable the port. Keep the other port disabled */
if (endp->reg == 0) {
bus_write_4(sc->res, REPLICATOR_IDFILTER0, 0x00);
bus_write_4(sc->res, REPLICATOR_IDFILTER1, 0xff);
} else {
bus_write_4(sc->res, REPLICATOR_IDFILTER0, 0xff);
bus_write_4(sc->res, REPLICATOR_IDFILTER1, 0x00);
}
return (0);
}
static void
replicator_disable(device_t dev, struct endpoint *endp,
struct coresight_event *event)
{
struct replicator_softc *sc;
sc = device_get_softc(dev);
bus_write_4(sc->res, REPLICATOR_IDFILTER0, 0xff);
bus_write_4(sc->res, REPLICATOR_IDFILTER1, 0xff);
}
int
replicator_attach(device_t dev)
{
struct replicator_softc *sc;
struct coresight_desc desc;
sc = device_get_softc(dev);
if (bus_alloc_resources(dev, replicator_spec, &sc->res) != 0) {
device_printf(dev, "cannot allocate resources for device\n");
return (ENXIO);
}
desc.pdata = sc->pdata;
desc.dev = dev;
desc.dev_type = CORESIGHT_DYNAMIC_REPLICATOR;
coresight_register(&desc);
return (0);
}
static device_method_t replicator_methods[] = {
/* Coresight interface */
DEVMETHOD(coresight_init, replicator_init),
DEVMETHOD(coresight_enable, replicator_enable),
DEVMETHOD(coresight_disable, replicator_disable),
DEVMETHOD_END
};
DEFINE_CLASS_0(replicator, replicator_driver, replicator_methods,
sizeof(struct replicator_softc));