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)26 void 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)34 void 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)42 void plat_sq_interconnect_exit_coherency(void)
43 {
44 	ccn_exit_snoop_dvm_domain(1 << MPIDR_AFFLVL1_VAL(read_mpidr_el1()));
45 }
46