1 /* 2 * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved. 3 * 4 * SPDX-License-Identifier: BSD-3-Clause 5 */ 6 7 #include <platform_def.h> 8 9 #include <arch.h> 10 #include <arch_helpers.h> 11 #include <drivers/arm/ccn.h> 12 13 static const unsigned char master_to_rn_id_map[] = { 14 PLAT_SQ_CLUSTER_TO_CCN_ID_MAP 15 }; 16 17 static const ccn_desc_t sq_ccn_desc = { 18 .periphbase = PLAT_SQ_CCN_BASE, 19 .num_masters = ARRAY_SIZE(master_to_rn_id_map), 20 .master_to_rn_id_map = master_to_rn_id_map 21 }; 22 23 /****************************************************************************** 24 * Helper function to initialize SQ CCN driver. 25 *****************************************************************************/ plat_sq_interconnect_init(void)26void plat_sq_interconnect_init(void) 27 { 28 ccn_init(&sq_ccn_desc); 29 } 30 31 /****************************************************************************** 32 * Helper function to place current master into coherency 33 *****************************************************************************/ plat_sq_interconnect_enter_coherency(void)34void plat_sq_interconnect_enter_coherency(void) 35 { 36 ccn_enter_snoop_dvm_domain(1 << MPIDR_AFFLVL1_VAL(read_mpidr_el1())); 37 } 38 39 /****************************************************************************** 40 * Helper function to remove current master from coherency 41 *****************************************************************************/ plat_sq_interconnect_exit_coherency(void)42void plat_sq_interconnect_exit_coherency(void) 43 { 44 ccn_exit_snoop_dvm_domain(1 << MPIDR_AFFLVL1_VAL(read_mpidr_el1())); 45 } 46