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

2026-09-06 03:52:57 +08:00
commit b1928b41c0
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+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <platform_def.h>
+
+#include <arch.h>
+#include <arch_helpers.h>
+#include <drivers/arm/ccn.h>
+
+static const unsigned char master_to_rn_id_map[] = {
+	PLAT_SQ_CLUSTER_TO_CCN_ID_MAP
+};
+
+static const ccn_desc_t sq_ccn_desc = {
+	.periphbase = PLAT_SQ_CCN_BASE,
+	.num_masters = ARRAY_SIZE(master_to_rn_id_map),
+	.master_to_rn_id_map = master_to_rn_id_map
+};
+
+/******************************************************************************
+ * Helper function to initialize SQ CCN driver.
+ *****************************************************************************/
+void plat_sq_interconnect_init(void)
+{
+	ccn_init(&sq_ccn_desc);
+}
+
+/******************************************************************************
+ * Helper function to place current master into coherency
+ *****************************************************************************/
+void plat_sq_interconnect_enter_coherency(void)
+{
+	ccn_enter_snoop_dvm_domain(1 << MPIDR_AFFLVL1_VAL(read_mpidr_el1()));
+}
+
+/******************************************************************************
+ * Helper function to remove current master from coherency
+ *****************************************************************************/
+void plat_sq_interconnect_exit_coherency(void)
+{
+	ccn_exit_snoop_dvm_domain(1 << MPIDR_AFFLVL1_VAL(read_mpidr_el1()));
+}