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