From 102b0d2daa97dae68d3eed54d8fe37a9cc38a892 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 28 Apr 2024 11:13:47 +0200 Subject: Adding upstream version 2.8.0+dfsg. Signed-off-by: Daniel Baumann --- drivers/nxp/interconnect/ls_cci.c | 38 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 drivers/nxp/interconnect/ls_cci.c (limited to 'drivers/nxp/interconnect/ls_cci.c') diff --git a/drivers/nxp/interconnect/ls_cci.c b/drivers/nxp/interconnect/ls_cci.c new file mode 100644 index 0000000..72a898a --- /dev/null +++ b/drivers/nxp/interconnect/ls_cci.c @@ -0,0 +1,38 @@ +/* + * Copyright 2020 NXP + * + * SPDX-License-Identifier: BSD-3-Clause + * + */ + +#include +#include + +#include + +/****************************************************************************** + * The following functions are defined as weak to allow a platform to override + * the way ARM CCI driver is initialised and used. + *****************************************************************************/ +#pragma weak plat_arm_interconnect_enter_coherency +#pragma weak plat_arm_interconnect_exit_coherency + +/****************************************************************************** + * Helper function to place current master into coherency + *****************************************************************************/ +void plat_ls_interconnect_enter_coherency(unsigned int num_clusters) +{ + cci_enable_snoop_dvm_reqs(MPIDR_AFFLVL1_VAL(read_mpidr_el1())); + + for (uint32_t index = 1U; index < num_clusters; index++) { + cci_enable_snoop_dvm_reqs(index); + } +} + +/****************************************************************************** + * Helper function to remove current master from coherency + *****************************************************************************/ +void plat_ls_interconnect_exit_coherency(void) +{ + cci_disable_snoop_dvm_reqs(MPIDR_AFFLVL1_VAL(read_mpidr_el1())); +} -- cgit v1.2.3