xref: /rk3399_ARM-atf/drivers/nxp/interconnect/ls_cci.c (revision ddc1fcee5df039c3c4d0105831b2e0b5a6f1f566) 
1 /*
2  * Copyright 2020 NXP
3  *
4  * SPDX-License-Identifier: BSD-3-Clause
5  *
6  */
7 
8 #include <arch.h>
9 #include <cci.h>
10 
11 #include <plat_arm.h>
12 
13 
14 /******************************************************************************
15  * Helper function to place current master into coherency
16  *****************************************************************************/
plat_ls_interconnect_enter_coherency(unsigned int num_clusters)17 void plat_ls_interconnect_enter_coherency(unsigned int num_clusters)
18 {
19 	cci_enable_snoop_dvm_reqs(MPIDR_AFFLVL1_VAL(read_mpidr_el1()));
20 
21 	for (uint32_t index = 1U; index < num_clusters; index++) {
22 		cci_enable_snoop_dvm_reqs(index);
23 	}
24 }
25 
26 /******************************************************************************
27  * Helper function to remove current master from coherency
28  *****************************************************************************/
plat_ls_interconnect_exit_coherency(void)29 void plat_ls_interconnect_exit_coherency(void)
30 {
31 	cci_disable_snoop_dvm_reqs(MPIDR_AFFLVL1_VAL(read_mpidr_el1()));
32 }
33