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a8be4cd057
Add call to platform hooks upon successful transmission of a memory transaction request and as part of a memory reclaim request. This allows for platform specific functionality to be performed accordingly. Note the hooks must be placed in the initial share request and final reclaim to prevent order dependencies with operations that may take place in the normal world without visibility of the SPMC. Add a dummy implementation to the FVP platform. Signed-off-by: Marc Bonnici <marc.bonnici@arm.com> Change-Id: I0c7441a9fdf953c4db0651512e5e2cdbc6656c79
48 lines
1.4 KiB
C
48 lines
1.4 KiB
C
/*
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* Copyright (c) 2022, Arm Limited and Contributors. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <services/el3_spmc_ffa_memory.h>
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#include <platform_def.h>
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/*
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* On the FVP platform when using the EL3 SPMC implementation allocate the
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* datastore for tracking shared memory descriptors in the TZC DRAM section
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* to ensure sufficient storage can be allocated.
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* Provide an implementation of the accessor method to allow the datastore
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* details to be retrieved by the SPMC.
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* The SPMC will take care of initializing the memory region.
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*/
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#define PLAT_SPMC_SHMEM_DATASTORE_SIZE 512 * 1024
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__section("arm_el3_tzc_dram") static uint8_t
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plat_spmc_shmem_datastore[PLAT_SPMC_SHMEM_DATASTORE_SIZE];
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int plat_spmc_shmem_datastore_get(uint8_t **datastore, size_t *size)
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{
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*datastore = plat_spmc_shmem_datastore;
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*size = PLAT_SPMC_SHMEM_DATASTORE_SIZE;
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return 0;
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}
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/*
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* Add dummy implementations of memory management related platform hooks.
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* These can be used to implement platform specific functionality to support
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* a memory sharing/lending operation.
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*
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* Note: The hooks must be located as part of the initial share request and
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* final reclaim to prevent order dependencies with operations that may take
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* place in the normal world without visibility of the SPMC.
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*/
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int plat_spmc_shmem_begin(struct ffa_mtd *desc)
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{
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return 0;
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}
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int plat_spmc_shmem_reclaim(struct ffa_mtd *desc)
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{
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return 0;
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}
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