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/*
* 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;
void mv_xor_hal_init(u32 chan_num);
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 */
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