1 files changed, 66 insertions, 0 deletions
diff --git a/plat/marvell/armada/a3k/common/include/io_addr_dec.h b/plat/marvell/armada/a3k/common/include/io_addr_dec.h
new file mode 100644
index 0000000..42ef30b
--- /dev/null
+++ b/plat/marvell/armada/a3k/common/include/io_addr_dec.h
@@ -0,0 +1,66 @@
+/*
+ * Copyright (C) 2018 Marvell International Ltd.
+ *
+ * SPDX-License-Identifier:	BSD-3-Clause
+ * https://spdx.org/licenses
+ */
+
+#ifndef IO_ADDR_DEC_H
+#define IO_ADDR_DEC_H
+
+#include <stdint.h>
+
+/* There are 5 configurable cpu decoder windows. */
+#define DRAM_WIN_MAP_NUM_MAX	5
+/* Target number for dram in cpu decoder windows. */
+#define DRAM_CPU_DEC_TARGET_NUM	0
+
+/*
+ * Not all configurable decode windows could be used for dram, some units have
+ * to reserve one decode window for other unit they have to communicate with;
+ * for example, DMA engineer has 3 configurable windows, but only two could be
+ * for dram while the last one has to be for pcie, so for DMA, its max_dram_win
+ * is 2.
+ */
+struct dec_win_config {
+	uint32_t dec_reg_base; /* IO address decoder register base address */
+	uint32_t win_attr;	/* IO address decoder windows attributes */
+	/* How many configurable dram decoder windows that this unit has; */
+	uint32_t max_dram_win;
+	/* The decoder windows number including remapping that this unit has */
+	uint32_t max_remap;
+	/* The offset between continuous decode windows
+	 * within the same unit, typically 0x10
+	 */
+	uint32_t win_offset;
+};
+
+struct dram_win {
+	uintptr_t base_addr;
+	uintptr_t win_size;
+};
+
+struct  dram_win_map {
+	int dram_win_num;
+	struct dram_win dram_windows[DRAM_WIN_MAP_NUM_MAX];
+};
+
+/*
+ * init_io_addr_dec
+ *
+ * This function initializes io address decoder windows by
+ * cpu dram window mapping information
+ *
+ * @input: N/A
+ *     - dram_wins_map: cpu dram windows mapping
+ *     - io_dec_config: io address decoder windows configuration
+ *     - io_unit_num: io address decoder unit number
+ * @output: N/A
+ *
+ * @return:  0 on success and others on failure
+ */
+int init_io_addr_dec(struct dram_win_map *dram_wins_map,
+		     struct dec_win_config *io_dec_config,
+		     uint32_t io_unit_num);
+
+#endif /* IO_ADDR_DEC_H */