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/*-
* Copyright (c) 2015-2016 Landon Fuller <landon@freebsd.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.
*
* $FreeBSD$
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
/*
* bhnd(4) driver mix-in providing shared common methods for
* bhnd bus devices attached via a root nexus.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/rman.h>
#include <sys/malloc.h>
#include <machine/bus.h>
#include <dev/bhnd/bhnd_ids.h>
#include <dev/bhnd/cores/chipc/chipcreg.h>
#include "bhnd_nexusvar.h"
static const struct resource_spec bhnd_nexus_res_spec[] = {
{ SYS_RES_MEMORY, 0, RF_ACTIVE }, /* chipc registers */
{ -1, 0, 0 }
};
/**
* Map ChipCommon's register block and read the chip identifier data.
*
* @param dev A bhnd_nexus device.
* @param chipid On success, will be populated with the chip identifier.
* @retval 0 success
* @retval non-zero An error occurred reading the chip identifier..
*/
int
bhnd_nexus_read_chipid(device_t dev, struct bhnd_chipid *chipid)
{
struct resource_spec rspec[nitems(bhnd_nexus_res_spec)];
int error;
memcpy(rspec, bhnd_nexus_res_spec, sizeof(rspec));
error = bhnd_read_chipid(dev, rspec, 0, chipid);
if (error)
device_printf(dev, "error %d reading chip ID\n", error);
return (error);
}
static bool
bhnd_nexus_is_hw_disabled(device_t dev, device_t child)
{
return false;
}
static bhnd_attach_type
bhnd_nexus_get_attach_type(device_t dev, device_t child)
{
return (BHND_ATTACH_NATIVE);
}
static int
bhnd_nexus_activate_resource(device_t dev, device_t child, int type, int rid,
struct bhnd_resource *r)
{
int error;
/* Always direct */
if ((error = bus_activate_resource(child, type, rid, r->res)))
return (error);
r->direct = true;
return (0);
}
static int
bhnd_nexus_deactivate_resource(device_t dev, device_t child,
int type, int rid, struct bhnd_resource *r)
{
int error;
/* Always direct */
KASSERT(r->direct, ("indirect resource delegated to bhnd_nexus\n"));
if ((error = bus_deactivate_resource(child, type, rid, r->res)))
return (error);
r->direct = false;
return (0);
}
static device_method_t bhnd_nexus_methods[] = {
/* bhnd interface */
DEVMETHOD(bhnd_bus_activate_resource, bhnd_nexus_activate_resource),
DEVMETHOD(bhnd_bus_deactivate_resource, bhnd_nexus_deactivate_resource),
DEVMETHOD(bhnd_bus_is_hw_disabled, bhnd_nexus_is_hw_disabled),
DEVMETHOD(bhnd_bus_get_attach_type, bhnd_nexus_get_attach_type),
DEVMETHOD_END
};
DEFINE_CLASS_0(bhnd, bhnd_nexus_driver, bhnd_nexus_methods,
sizeof(struct bhnd_softc));
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