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/*-
* Copyright (c) 2015-2016 Landon Fuller <landon@landonf.org>
* 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,
* without modification.
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
* similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
* redistribution must be conditioned upon including a substantially
* similar Disclaimer requirement for further binary redistribution.
*
* NO WARRANTY
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
* THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR 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 DAMAGES.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/lock.h>
#include <sys/bus.h>
#include <sys/module.h>
#include <sys/mutex.h>
#include <sys/systm.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <dev/bhnd/bhnd.h>
#include "bhnd_pmureg.h"
#include "bhnd_pmuvar.h"
/*
* PMU core driver.
*/
/* Supported device identifiers */
static const struct bhnd_device bhnd_pmucore_devices[] = {
BHND_DEVICE(BCM, PMU, NULL, NULL),
BHND_DEVICE_END
};
static int
bhnd_pmu_core_probe(device_t dev)
{
const struct bhnd_device *id;
int error;
id = bhnd_device_lookup(dev, bhnd_pmucore_devices,
sizeof(bhnd_pmucore_devices[0]));
if (id == NULL)
return (ENXIO);
/* Delegate to common driver implementation */
if ((error = bhnd_pmu_probe(dev)) > 0)
return (error);
bhnd_set_default_core_desc(dev);
return (BUS_PROBE_DEFAULT);
}
static int
bhnd_pmu_core_attach(device_t dev)
{
struct bhnd_pmu_softc *sc;
struct bhnd_resource *res;
int error;
int rid;
sc = device_get_softc(dev);
/* Allocate register block */
rid = 0;
res = bhnd_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE);
if (res == NULL) {
device_printf(dev, "failed to allocate resources\n");
return (ENXIO);
}
/* Allocate our per-core PMU state */
if ((error = bhnd_alloc_pmu(dev))) {
device_printf(sc->dev, "failed to allocate PMU state: %d\n",
error);
return (error);
}
/* Delegate to common driver implementation */
if ((error = bhnd_pmu_attach(dev, res))) {
bhnd_release_resource(dev, SYS_RES_MEMORY, rid, res);
return (error);
}
sc->rid = rid;
return (0);
}
static int
bhnd_pmu_core_detach(device_t dev)
{
struct bhnd_pmu_softc *sc;
int error;
sc = device_get_softc(dev);
/* Delegate to common driver implementation */
if ((error = bhnd_pmu_detach(dev)))
return (error);
bhnd_release_resource(dev, SYS_RES_MEMORY, sc->rid, sc->res);
return (0);
}
static device_method_t bhnd_pmucore_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, bhnd_pmu_core_probe),
DEVMETHOD(device_attach, bhnd_pmu_core_attach),
DEVMETHOD(device_detach, bhnd_pmu_core_detach),
DEVMETHOD_END
};
DEFINE_CLASS_1(bhnd_pmu, bhnd_pmucore_driver, bhnd_pmucore_methods,
sizeof(struct bhnd_pmu_softc), bhnd_pmu_driver);
EARLY_DRIVER_MODULE(bhnd_pmu, bhnd, bhnd_pmucore_driver, bhnd_pmu_devclass,
NULL, NULL, BUS_PASS_TIMER + BUS_PASS_ORDER_MIDDLE);
MODULE_DEPEND(bhnd_pmu_core, bhnd_pmu, 1, 1, 1);
MODULE_VERSION(bhnd_pmu_core, 1);
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