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/*
* Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 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.
*
* Neither the name of ARM nor the names of its contributors may be used
* to endorse or promote products derived from this software without specific
* prior written permission.
*
* 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 MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER 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 <arch_helpers.h>
#include <platform_def.h>
#include <psci.h>
/*******************************************************************************
* This function implements a part of the critical interface between the psci
* generic layer and the platform to allow the former to detect the platform
* topology. psci queries the platform to determine how many affinity instances
* are present at a particular level for a given mpidr.
******************************************************************************/
unsigned int plat_get_aff_count(unsigned int aff_lvl,
unsigned long mpidr)
{
switch (aff_lvl) {
case MPIDR_AFFLVL2:
/* Last supported affinity level */
return 1;
case MPIDR_AFFLVL1:
/* Return # of clusters */
return PLATFORM_CLUSTER_COUNT;
case MPIDR_AFFLVL0:
/* # of cpus per cluster */
return PLATFORM_MAX_CPUS_PER_CLUSTER;
default:
return PSCI_AFF_ABSENT;
}
}
/*******************************************************************************
* This function implements a part of the critical interface between the psci
* generic layer and the platform to allow the former to detect the state of a
* affinity instance in the platform topology. psci queries the platform to
* determine whether an affinity instance is present or absent.
******************************************************************************/
unsigned int plat_get_aff_state(unsigned int aff_lvl,
unsigned long mpidr)
{
return (aff_lvl <= MPIDR_AFFLVL2) ? PSCI_AFF_PRESENT : PSCI_AFF_ABSENT;
}