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GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

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lai
2026-09-06 03:52:57 +08:00
commit b1928b41c0
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source/trusted-firmware/trusted-firmware-a-2.8/drivers/nxp/interconnect/ls_ccn.c
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/*
* Copyright 2020 NXP
*
* SPDX-License-Identifier: BSD-3-Clause
*
*/
#include <arch.h>
#include <ccn.h>
#include <plat_arm.h>
/******************************************************************************
* Helper function to place current master into coherency
*****************************************************************************/
void plat_ls_interconnect_enter_coherency(unsigned int num_clusters)
{
ccn_enter_snoop_dvm_domain(1ULL << MPIDR_AFFLVL1_VAL(read_mpidr_el1()));
for (uint32_t index = 1U; index < num_clusters; index++) {
ccn_enter_snoop_dvm_domain(1ULL << index);
}
}
/******************************************************************************
* Helper function to remove current master from coherency
*****************************************************************************/
void plat_ls_interconnect_exit_coherency(void)
{
ccn_exit_snoop_dvm_domain(1ULL << MPIDR_AFFLVL1_VAL(read_mpidr_el1()));
}