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/* SPDX-License-Identifier: GPL-2.0 */
/* Copyright (C) 2012-2018 ARM Limited or its affiliates. */
/* \file cc_hash.h
* ARM CryptoCell Hash Crypto API
*/
#ifndef __CC_HASH_H__
#define __CC_HASH_H__
#include "cc_buffer_mgr.h"
#define HMAC_IPAD_CONST 0x36363636
#define HMAC_OPAD_CONST 0x5C5C5C5C
#define HASH_LEN_SIZE_712 16
#define HASH_LEN_SIZE_630 8
#define HASH_MAX_LEN_SIZE HASH_LEN_SIZE_712
#define CC_MAX_HASH_DIGEST_SIZE SHA512_DIGEST_SIZE
#define CC_MAX_HASH_BLCK_SIZE SHA512_BLOCK_SIZE
#define XCBC_MAC_K1_OFFSET 0
#define XCBC_MAC_K2_OFFSET 16
#define XCBC_MAC_K3_OFFSET 32
#define CC_EXPORT_MAGIC 0xC2EE1070U
/* this struct was taken from drivers/crypto/nx/nx-aes-xcbc.c and it is used
* for xcbc/cmac statesize
*/
struct aeshash_state {
u8 state[AES_BLOCK_SIZE];
unsigned int count;
u8 buffer[AES_BLOCK_SIZE];
};
/* ahash state */
struct ahash_req_ctx {
u8 buffers[2][CC_MAX_HASH_BLCK_SIZE] ____cacheline_aligned;
u8 digest_result_buff[CC_MAX_HASH_DIGEST_SIZE] ____cacheline_aligned;
u8 digest_buff[CC_MAX_HASH_DIGEST_SIZE] ____cacheline_aligned;
u8 opad_digest_buff[CC_MAX_HASH_DIGEST_SIZE] ____cacheline_aligned;
u8 digest_bytes_len[HASH_MAX_LEN_SIZE] ____cacheline_aligned;
struct async_gen_req_ctx gen_ctx ____cacheline_aligned;
enum cc_req_dma_buf_type data_dma_buf_type;
dma_addr_t opad_digest_dma_addr;
dma_addr_t digest_buff_dma_addr;
dma_addr_t digest_bytes_len_dma_addr;
dma_addr_t digest_result_dma_addr;
u32 buf_cnt[2];
u32 buff_index;
u32 xcbc_count; /* count xcbc update operatations */
struct scatterlist buff_sg[2];
struct scatterlist *curr_sg;
u32 in_nents;
u32 mlli_nents;
struct mlli_params mlli_params;
};
static inline u32 *cc_hash_buf_cnt(struct ahash_req_ctx *state)
{
return &state->buf_cnt[state->buff_index];
}
static inline u8 *cc_hash_buf(struct ahash_req_ctx *state)
{
return state->buffers[state->buff_index];
}
static inline u32 *cc_next_buf_cnt(struct ahash_req_ctx *state)
{
return &state->buf_cnt[state->buff_index ^ 1];
}
static inline u8 *cc_next_buf(struct ahash_req_ctx *state)
{
return state->buffers[state->buff_index ^ 1];
}
int cc_hash_alloc(struct cc_drvdata *drvdata);
int cc_init_hash_sram(struct cc_drvdata *drvdata);
int cc_hash_free(struct cc_drvdata *drvdata);
/*!
* Gets the initial digest length
*
* \param drvdata
* \param mode The Hash mode. Supported modes:
* MD5/SHA1/SHA224/SHA256/SHA384/SHA512
*
* \return u32 returns the address of the initial digest length in SRAM
*/
cc_sram_addr_t
cc_digest_len_addr(void *drvdata, u32 mode);
/*!
* Gets the address of the initial digest in SRAM
* according to the given hash mode
*
* \param drvdata
* \param mode The Hash mode. Supported modes:
* MD5/SHA1/SHA224/SHA256/SHA384/SHA512
*
* \return u32 The address of the initial digest in SRAM
*/
cc_sram_addr_t cc_larval_digest_addr(void *drvdata, u32 mode);
void cc_hash_global_init(void);
#endif /*__CC_HASH_H__*/
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