drivers/staging/ccree/ssi_cipher.h

   1 /*
   2  * Copyright (C) 2012-2017 ARM Limited or its affiliates.
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License version 2 as
   6  * published by the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License
  14  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  15  */
  16
  17 /* \file ssi_cipher.h
  18    ARM CryptoCell Cipher Crypto API
  19  */
  20
  21 #ifndef __SSI_CIPHER_H__
  22 #define __SSI_CIPHER_H__
  23
  24 #include <linux/kernel.h>
  25 #include <crypto/algapi.h>
  26 #include "ssi_driver.h"
  27 #include "ssi_buffer_mgr.h"
  28
  29
  30 /* Crypto cipher flags */
  31 #define CC_CRYPTO_CIPHER_KEY_KFDE0    (1 << 0)
  32 #define CC_CRYPTO_CIPHER_KEY_KFDE1    (1 << 1)
  33 #define CC_CRYPTO_CIPHER_KEY_KFDE2    (1 << 2)
  34 #define CC_CRYPTO_CIPHER_KEY_KFDE3    (1 << 3)
  35 #define CC_CRYPTO_CIPHER_DU_SIZE_512B (1 << 4)
  36
  37 #define CC_CRYPTO_CIPHER_KEY_KFDE_MASK (CC_CRYPTO_CIPHER_KEY_KFDE0 | CC_CRYPTO_CIPHER_KEY_KFDE1 | CC_CRYPTO_CIPHER_KEY_KFDE2 | CC_CRYPTO_CIPHER_KEY_KFDE3)
  38
  39
  40 struct blkcipher_req_ctx {
  41         struct async_gen_req_ctx gen_ctx;
  42         enum ssi_req_dma_buf_type dma_buf_type;
  43         u32 in_nents;
  44         u32 in_mlli_nents;
  45         u32 out_nents;
  46         u32 out_mlli_nents;
  47         u8 *backup_info; /*store iv for generated IV flow*/
  48         bool is_giv;
  49         struct mlli_params mlli_params;
  50 };
  51
  52
  53
  54 int ssi_ablkcipher_alloc(struct ssi_drvdata *drvdata);
  55
  56 int ssi_ablkcipher_free(struct ssi_drvdata *drvdata);
  57
  58 #ifndef CRYPTO_ALG_BULK_MASK
  59
  60 #define CRYPTO_ALG_BULK_DU_512  0x00002000
  61 #define CRYPTO_ALG_BULK_DU_4096 0x00004000
  62 #define CRYPTO_ALG_BULK_MASK    (CRYPTO_ALG_BULK_DU_512 |\
  63                                 CRYPTO_ALG_BULK_DU_4096)
  64 #endif /* CRYPTO_ALG_BULK_MASK */
  65
  66
  67 #ifdef CRYPTO_TFM_REQ_HW_KEY
  68
  69 static inline bool ssi_is_hw_key(struct crypto_tfm *tfm)
  70 {
  71         return (crypto_tfm_get_flags(tfm) & CRYPTO_TFM_REQ_HW_KEY);
  72 }
  73
  74 #else
  75
  76 struct arm_hw_key_info {
  77         int hw_key1;
  78         int hw_key2;
  79 };
  80
  81 static inline bool ssi_is_hw_key(struct crypto_tfm *tfm)
  82 {
  83         return 0;
  84 }
  85
  86 #endif /* CRYPTO_TFM_REQ_HW_KEY */
  87
  88
  89 #endif /*__SSI_CIPHER_H__*/