73 lines
3.0 KiB
C
73 lines
3.0 KiB
C
/*
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* Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* Neither the name of ARM nor the names of its contributors may be used
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* to endorse or promote products derived from this software without specific
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* prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <arch_helpers.h>
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#include <platform_def.h>
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#include <psci.h>
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/*******************************************************************************
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* This function implements a part of the critical interface between the psci
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* generic layer and the platform to allow the former to detect the platform
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* topology. psci queries the platform to determine how many affinity instances
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* are present at a particular level for a given mpidr.
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******************************************************************************/
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unsigned int plat_get_aff_count(unsigned int aff_lvl,
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unsigned long mpidr)
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{
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switch (aff_lvl) {
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case MPIDR_AFFLVL2:
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/* Last supported affinity level */
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return 1;
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case MPIDR_AFFLVL1:
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/* Return # of clusters */
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return PLATFORM_CLUSTER_COUNT;
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case MPIDR_AFFLVL0:
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/* # of cpus per cluster */
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return PLATFORM_MAX_CPUS_PER_CLUSTER;
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default:
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return PSCI_AFF_ABSENT;
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}
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}
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/*******************************************************************************
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* This function implements a part of the critical interface between the psci
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* generic layer and the platform to allow the former to detect the state of a
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* affinity instance in the platform topology. psci queries the platform to
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* determine whether an affinity instance is present or absent.
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******************************************************************************/
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unsigned int plat_get_aff_state(unsigned int aff_lvl,
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unsigned long mpidr)
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{
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return (aff_lvl <= MPIDR_AFFLVL2) ? PSCI_AFF_PRESENT : PSCI_AFF_ABSENT;
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}
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