107 lines
2.9 KiB
C
107 lines
2.9 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 */
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/* Copyright (C) 2012-2019 ARM Limited (or its affiliates). */
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/* \file cc_hash.h
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* ARM CryptoCell Hash Crypto API
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*/
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#ifndef __CC_HASH_H__
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#define __CC_HASH_H__
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#include "cc_buffer_mgr.h"
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#define HMAC_IPAD_CONST 0x36363636
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#define HMAC_OPAD_CONST 0x5C5C5C5C
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#define HASH_LEN_SIZE_712 16
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#define HASH_LEN_SIZE_630 8
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#define HASH_MAX_LEN_SIZE HASH_LEN_SIZE_712
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#define CC_MAX_HASH_DIGEST_SIZE SHA512_DIGEST_SIZE
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#define CC_MAX_HASH_BLCK_SIZE SHA512_BLOCK_SIZE
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#define XCBC_MAC_K1_OFFSET 0
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#define XCBC_MAC_K2_OFFSET 16
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#define XCBC_MAC_K3_OFFSET 32
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#define CC_EXPORT_MAGIC 0xC2EE1070U
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/* this struct was taken from drivers/crypto/nx/nx-aes-xcbc.c and it is used
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* for xcbc/cmac statesize
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*/
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struct aeshash_state {
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u8 state[AES_BLOCK_SIZE];
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unsigned int count;
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u8 buffer[AES_BLOCK_SIZE];
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};
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/* ahash state */
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struct ahash_req_ctx {
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u8 buffers[2][CC_MAX_HASH_BLCK_SIZE] ____cacheline_aligned;
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u8 digest_result_buff[CC_MAX_HASH_DIGEST_SIZE] ____cacheline_aligned;
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u8 digest_buff[CC_MAX_HASH_DIGEST_SIZE] ____cacheline_aligned;
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u8 opad_digest_buff[CC_MAX_HASH_DIGEST_SIZE] ____cacheline_aligned;
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u8 digest_bytes_len[HASH_MAX_LEN_SIZE] ____cacheline_aligned;
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struct async_gen_req_ctx gen_ctx ____cacheline_aligned;
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enum cc_req_dma_buf_type data_dma_buf_type;
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dma_addr_t opad_digest_dma_addr;
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dma_addr_t digest_buff_dma_addr;
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dma_addr_t digest_bytes_len_dma_addr;
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dma_addr_t digest_result_dma_addr;
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u32 buf_cnt[2];
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u32 buff_index;
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u32 xcbc_count; /* count xcbc update operatations */
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struct scatterlist buff_sg[2];
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struct scatterlist *curr_sg;
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u32 in_nents;
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u32 mlli_nents;
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struct mlli_params mlli_params;
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};
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static inline u32 *cc_hash_buf_cnt(struct ahash_req_ctx *state)
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{
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return &state->buf_cnt[state->buff_index];
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}
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static inline u8 *cc_hash_buf(struct ahash_req_ctx *state)
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{
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return state->buffers[state->buff_index];
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}
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static inline u32 *cc_next_buf_cnt(struct ahash_req_ctx *state)
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{
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return &state->buf_cnt[state->buff_index ^ 1];
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}
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static inline u8 *cc_next_buf(struct ahash_req_ctx *state)
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{
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return state->buffers[state->buff_index ^ 1];
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}
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int cc_hash_alloc(struct cc_drvdata *drvdata);
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int cc_init_hash_sram(struct cc_drvdata *drvdata);
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int cc_hash_free(struct cc_drvdata *drvdata);
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/**
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* cc_digest_len_addr() - Gets the initial digest length
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*
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* @drvdata: Associated device driver context
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* @mode: The Hash mode. Supported modes: MD5/SHA1/SHA224/SHA256/SHA384/SHA512
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*
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* Return:
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* Returns the address of the initial digest length in SRAM
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*/
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u32 cc_digest_len_addr(void *drvdata, u32 mode);
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/**
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* cc_larval_digest_addr() - Gets the address of the initial digest in SRAM
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* according to the given hash mode
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*
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* @drvdata: Associated device driver context
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* @mode: The Hash mode. Supported modes: MD5/SHA1/SHA224/SHA256/SHA384/SHA512
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*
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* Return:
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* The address of the initial digest in SRAM
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*/
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u32 cc_larval_digest_addr(void *drvdata, u32 mode);
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#endif /*__CC_HASH_H__*/
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