LXR linux/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
  84struct 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
  96void qce_cpu_to_be32p_array(__be32 *dst, const u8 *src, unsigned int len);
  97int qce_check_status(struct qce_device *qce, u32 *status);
  98void qce_get_version(struct qce_device *qce, u32 *major, u32 *minor, u32 *step);
  99int qce_start(struct crypto_async_request *async_req, u32 type, u32 totallen,
 100              u32 offset);
 101
 102#endif /* _COMMON_H_ */
 103