drivers/crypto/qce/common.h

   1 /*
   2  * Copyright (c) 2010-2014, The Linux Foundation. All rights reserved.
   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 and
   6  * only version 2 as 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
  14 #ifndef _COMMON_H_
  15 #define _COMMON_H_
  16
  17 #include <linux/crypto.h>
  18 #include <linux/types.h>
  19 #include <crypto/aes.h>
  20 #include <crypto/hash.h>
  21
  22 /* key size in bytes */
  23 #define QCE_SHA_HMAC_KEY_SIZE           64
  24 #define QCE_MAX_CIPHER_KEY_SIZE         AES_KEYSIZE_256
  25
  26 /* IV length in bytes */
  27 #define QCE_AES_IV_LENGTH               AES_BLOCK_SIZE
  28 /* max of AES_BLOCK_SIZE, DES3_EDE_BLOCK_SIZE */
  29 #define QCE_MAX_IV_SIZE                 AES_BLOCK_SIZE
  30
  31 /* maximum nonce bytes  */
  32 #define QCE_MAX_NONCE                   16
  33 #define QCE_MAX_NONCE_WORDS             (QCE_MAX_NONCE / sizeof(u32))
  34
  35 /* burst size alignment requirement */
  36 #define QCE_MAX_ALIGN_SIZE              64
  37
  38 /* cipher algorithms */
  39 #define QCE_ALG_DES                     BIT(0)
  40 #define QCE_ALG_3DES                    BIT(1)
  41 #define QCE_ALG_AES                     BIT(2)
  42
  43 /* hash and hmac algorithms */
  44 #define QCE_HASH_SHA1                   BIT(3)
  45 #define QCE_HASH_SHA256                 BIT(4)
  46 #define QCE_HASH_SHA1_HMAC              BIT(5)
  47 #define QCE_HASH_SHA256_HMAC            BIT(6)
  48 #define QCE_HASH_AES_CMAC               BIT(7)
  49
  50 /* cipher modes */
  51 #define QCE_MODE_CBC                    BIT(8)
  52 #define QCE_MODE_ECB                    BIT(9)
  53 #define QCE_MODE_CTR                    BIT(10)
  54 #define QCE_MODE_XTS                    BIT(11)
  55 #define QCE_MODE_CCM                    BIT(12)
  56 #define QCE_MODE_MASK                   GENMASK(12, 8)
  57
  58 /* cipher encryption/decryption operations */
  59 #define QCE_ENCRYPT                     BIT(13)
  60 #define QCE_DECRYPT                     BIT(14)
  61
  62 #define IS_DES(flags)                   (flags & QCE_ALG_DES)
  63 #define IS_3DES(flags)                  (flags & QCE_ALG_3DES)
  64 #define IS_AES(flags)                   (flags & QCE_ALG_AES)
  65
  66 #define IS_SHA1(flags)                  (flags & QCE_HASH_SHA1)
  67 #define IS_SHA256(flags)                (flags & QCE_HASH_SHA256)
  68 #define IS_SHA1_HMAC(flags)             (flags & QCE_HASH_SHA1_HMAC)
  69 #define IS_SHA256_HMAC(flags)           (flags & QCE_HASH_SHA256_HMAC)
  70 #define IS_CMAC(flags)                  (flags & QCE_HASH_AES_CMAC)
  71 #define IS_SHA(flags)                   (IS_SHA1(flags) || IS_SHA256(flags))
  72 #define IS_SHA_HMAC(flags)              \
  73                 (IS_SHA1_HMAC(flags) || IS_SHA256_HMAC(flags))
  74
  75 #define IS_CBC(mode)                    (mode & QCE_MODE_CBC)
  76 #define IS_ECB(mode)                    (mode & QCE_MODE_ECB)
  77 #define IS_CTR(mode)                    (mode & QCE_MODE_CTR)
  78 #define IS_XTS(mode)                    (mode & QCE_MODE_XTS)
  79 #define IS_CCM(mode)                    (mode & QCE_MODE_CCM)
  80
  81 #define IS_ENCRYPT(dir)                 (dir & QCE_ENCRYPT)
  82 #define IS_DECRYPT(dir)                 (dir & QCE_DECRYPT)
  83
  84 struct qce_alg_template {
  85         struct list_head entry;
  86         u32 crypto_alg_type;
  87         unsigned long alg_flags;
  88         const u32 *std_iv;
  89         union {
  90                 struct crypto_alg crypto;
  91                 struct ahash_alg ahash;
  92         } alg;
  93         struct qce_device *qce;
  94 };
  95
  96 void qce_cpu_to_be32p_array(__be32 *dst, const u8 *src, unsigned int len);
  97 int qce_check_status(struct qce_device *qce, u32 *status);
  98 void qce_get_version(struct qce_device *qce, u32 *major, u32 *minor, u32 *step);
  99 int qce_start(struct crypto_async_request *async_req, u32 type, u32 totallen,
 100               u32 offset);
 101
 102 #endif /* _COMMON_H_ */