diff options
Diffstat (limited to 'drivers/crypto/ccree/cc_hash.h')
| -rw-r--r-- | drivers/crypto/ccree/cc_hash.h | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/drivers/crypto/ccree/cc_hash.h b/drivers/crypto/ccree/cc_hash.h new file mode 100644 index 000000000..3d0f2179e --- /dev/null +++ b/drivers/crypto/ccree/cc_hash.h @@ -0,0 +1,106 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Copyright (C) 2012-2019 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); + +/** + * cc_digest_len_addr() - Gets the initial digest length + * + * @drvdata: Associated device driver context + * @mode: The Hash mode. Supported modes: MD5/SHA1/SHA224/SHA256/SHA384/SHA512 + * + * Return: + * Returns the address of the initial digest length in SRAM + */ +u32 cc_digest_len_addr(void *drvdata, u32 mode); + +/** + * cc_larval_digest_addr() - Gets the address of the initial digest in SRAM + * according to the given hash mode + * + * @drvdata: Associated device driver context + * @mode: The Hash mode. Supported modes: MD5/SHA1/SHA224/SHA256/SHA384/SHA512 + * + * Return: + * The address of the initial digest in SRAM + */ +u32 cc_larval_digest_addr(void *drvdata, u32 mode); + +#endif /*__CC_HASH_H__*/ |