drivers/crypto/ccree/cc_hash.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /* Copyright (C) 2012-2019 ARM Limited (or its affiliates). */
   3
   4 /* \file cc_hash.h
   5  * ARM CryptoCell Hash Crypto API
   6  */
   7
   8 #ifndef __CC_HASH_H__
   9 #define __CC_HASH_H__
  10
  11 #include "cc_buffer_mgr.h"
  12
  13 #define HMAC_IPAD_CONST 0x36363636
  14 #define HMAC_OPAD_CONST 0x5C5C5C5C
  15 #define HASH_LEN_SIZE_712 16
  16 #define HASH_LEN_SIZE_630 8
  17 #define HASH_MAX_LEN_SIZE HASH_LEN_SIZE_712
  18 #define CC_MAX_HASH_DIGEST_SIZE SHA512_DIGEST_SIZE
  19 #define CC_MAX_HASH_BLCK_SIZE SHA512_BLOCK_SIZE
  20
  21 #define XCBC_MAC_K1_OFFSET 0
  22 #define XCBC_MAC_K2_OFFSET 16
  23 #define XCBC_MAC_K3_OFFSET 32
  24
  25 #define CC_EXPORT_MAGIC 0xC2EE1070U
  26
  27 /* this struct was taken from drivers/crypto/nx/nx-aes-xcbc.c and it is used
  28  * for xcbc/cmac statesize
  29  */
  30 struct aeshash_state {
  31         u8 state[AES_BLOCK_SIZE];
  32         unsigned int count;
  33         u8 buffer[AES_BLOCK_SIZE];
  34 };
  35
  36 /* ahash state */
  37 struct ahash_req_ctx {
  38         u8 buffers[2][CC_MAX_HASH_BLCK_SIZE] ____cacheline_aligned;
  39         u8 digest_result_buff[CC_MAX_HASH_DIGEST_SIZE] ____cacheline_aligned;
  40         u8 digest_buff[CC_MAX_HASH_DIGEST_SIZE] ____cacheline_aligned;
  41         u8 opad_digest_buff[CC_MAX_HASH_DIGEST_SIZE] ____cacheline_aligned;
  42         u8 digest_bytes_len[HASH_MAX_LEN_SIZE] ____cacheline_aligned;
  43         struct async_gen_req_ctx gen_ctx ____cacheline_aligned;
  44         enum cc_req_dma_buf_type data_dma_buf_type;
  45         dma_addr_t opad_digest_dma_addr;
  46         dma_addr_t digest_buff_dma_addr;
  47         dma_addr_t digest_bytes_len_dma_addr;
  48         dma_addr_t digest_result_dma_addr;
  49         u32 buf_cnt[2];
  50         u32 buff_index;
  51         u32 xcbc_count; /* count xcbc update operatations */
  52         struct scatterlist buff_sg[2];
  53         struct scatterlist *curr_sg;
  54         u32 in_nents;
  55         u32 mlli_nents;
  56         struct mlli_params mlli_params;
  57 };
  58
  59 static inline u32 *cc_hash_buf_cnt(struct ahash_req_ctx *state)
  60 {
  61         return &state->buf_cnt[state->buff_index];
  62 }
  63
  64 static inline u8 *cc_hash_buf(struct ahash_req_ctx *state)
  65 {
  66         return state->buffers[state->buff_index];
  67 }
  68
  69 static inline u32 *cc_next_buf_cnt(struct ahash_req_ctx *state)
  70 {
  71         return &state->buf_cnt[state->buff_index ^ 1];
  72 }
  73
  74 static inline u8 *cc_next_buf(struct ahash_req_ctx *state)
  75 {
  76         return state->buffers[state->buff_index ^ 1];
  77 }
  78
  79 int cc_hash_alloc(struct cc_drvdata *drvdata);
  80 int cc_init_hash_sram(struct cc_drvdata *drvdata);
  81 int cc_hash_free(struct cc_drvdata *drvdata);
  82
  83 /**
  84  * cc_digest_len_addr() - Gets the initial digest length
  85  *
  86  * @drvdata: Associated device driver context
  87  * @mode: The Hash mode. Supported modes: MD5/SHA1/SHA224/SHA256/SHA384/SHA512
  88  *
  89  * Return:
  90  * Returns the address of the initial digest length in SRAM
  91  */
  92 u32 cc_digest_len_addr(void *drvdata, u32 mode);
  93
  94 /**
  95  * cc_larval_digest_addr() - Gets the address of the initial digest in SRAM
  96  * according to the given hash mode
  97  *
  98  * @drvdata: Associated device driver context
  99  * @mode: The Hash mode. Supported modes: MD5/SHA1/SHA224/SHA256/SHA384/SHA512
 100  *
 101  * Return:
 102  * The address of the initial digest in SRAM
 103  */
 104 u32 cc_larval_digest_addr(void *drvdata, u32 mode);
 105
 106 #endif /*__CC_HASH_H__*/