1 files changed, 70 insertions, 0 deletions
diff --git a/drivers/ddr/marvell/axp/xor.h b/drivers/ddr/marvell/axp/xor.h
new file mode 100644
index 00000000000..353648758a9
--- /dev/null
+++ b/drivers/ddr/marvell/axp/xor.h
@@ -0,0 +1,70 @@
+/*
+ * Copyright (C) Marvell International Ltd. and its affiliates
+ *
+ * SPDX-License-Identifier:	GPL-2.0
+ */
+
+#ifndef __XOR_H
+#define __XOR_H
+
+#include "ddr3_hw_training.h"
+
+#define MV_XOR_MAX_CHAN         4 /* total channels for all units together */
+
+/*
+ * This enumerator describes the type of functionality the XOR channel
+ * can have while using the same data structures.
+ */
+enum xor_type {
+	MV_XOR,		/* XOR channel functions as XOR accelerator     */
+	MV_DMA,		/* XOR channel functions as IDMA channel        */
+	MV_CRC32	/* XOR channel functions as CRC 32 calculator   */
+};
+
+/*
+ * This enumerator describes the set of commands that can be applied on
+ * an engine (e.g. IDMA, XOR). Appling a comman depends on the current
+ * status (see MV_STATE enumerator)
+ * Start can be applied only when status is IDLE
+ * Stop can be applied only when status is IDLE, ACTIVE or PAUSED
+ * Pause can be applied only when status is ACTIVE
+ * Restart can be applied only when status is PAUSED
+ */
+enum mv_command {
+	MV_START,		/* Start     */
+	MV_STOP,		/* Stop     */
+	MV_PAUSE,		/* Pause    */
+	MV_RESTART		/* Restart  */
+};
+
+/*
+ * This enumerator describes the set of state conditions.
+ * Moving from one state to other is stricted.
+ */
+enum mv_state {
+	MV_IDLE,
+	MV_ACTIVE,
+	MV_PAUSED,
+	MV_UNDEFINED_STATE
+};
+
+/* XOR descriptor structure for CRC and DMA descriptor */
+struct crc_dma_desc {
+	u32 status;		/* Successful descriptor execution indication */
+	u32 crc32_result;	/* Result of CRC-32 calculation */
+	u32 desc_cmd;		/* type of operation to be carried out on the data */
+	u32 next_desc_ptr;	/* Next descriptor address pointer */
+	u32 byte_cnt;		/* Size of source block part represented by the descriptor */
+	u32 dst_addr;		/* Destination Block address pointer (not used in CRC32 */
+	u32 src_addr0;		/* Mode: Source Block address pointer */
+	u32 src_addr1;		/* Mode: Source Block address pointer */
+} __packed;
+
+int mv_xor_state_get(u32 chan);
+void mv_sys_xor_init(MV_DRAM_INFO *dram_info);
+void mv_sys_xor_finish(void);
+int mv_xor_transfer(u32 chan, int xor_type, u32 xor_chain_ptr);
+int mv_xor_mem_init(u32 chan, u32 start_ptr, u32 block_size, u32 init_val_high,
+		    u32 init_val_low);
+
+#endif /* __XOR_H */