/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Copyright (c) 2010-2014, The Linux Foundation. All rights reserved.
 */

#ifndef _COMMON_H_
#define _COMMON_H_

#include <linux/crypto.h>
#include <linux/types.h>
#include <crypto/aes.h>
#include <crypto/hash.h>
#include <crypto/internal/skcipher.h>
#include <crypto/internal/aead.h>

/* xts du size */
#define QCE_SECTOR_SIZE                 512

/* key size in bytes */
#define QCE_SHA_HMAC_KEY_SIZE           64
#define QCE_MAX_CIPHER_KEY_SIZE         AES_KEYSIZE_256

/* IV length in bytes */
#define QCE_AES_IV_LENGTH               AES_BLOCK_SIZE
/* max of AES_BLOCK_SIZE, DES3_EDE_BLOCK_SIZE */
#define QCE_MAX_IV_SIZE                 AES_BLOCK_SIZE

/* maximum nonce bytes  */
#define QCE_MAX_NONCE                   16
#define QCE_MAX_NONCE_WORDS             (QCE_MAX_NONCE / sizeof(u32))

/* burst size alignment requirement */
#define QCE_MAX_ALIGN_SIZE              64

/* cipher algorithms */
#define QCE_ALG_DES                     BIT(0)
#define QCE_ALG_3DES                    BIT(1)
#define QCE_ALG_AES                     BIT(2)

/* hash and hmac algorithms */
#define QCE_HASH_SHA1                   BIT(3)
#define QCE_HASH_SHA256                 BIT(4)
#define QCE_HASH_SHA1_HMAC              BIT(5)
#define QCE_HASH_SHA256_HMAC            BIT(6)
#define QCE_HASH_AES_CMAC               BIT(7)

/* cipher modes */
#define QCE_MODE_CBC                    BIT(8)
#define QCE_MODE_ECB                    BIT(9)
#define QCE_MODE_CTR                    BIT(10)
#define QCE_MODE_XTS                    BIT(11)
#define QCE_MODE_CCM                    BIT(12)
#define QCE_MODE_MASK                   GENMASK(12, 8)

#define QCE_MODE_CCM_RFC4309            BIT(13)

/* cipher encryption/decryption operations */
#define QCE_ENCRYPT                     BIT(30)
#define QCE_DECRYPT                     BIT(31)

#define IS_DES(flags)                   (flags & QCE_ALG_DES)
#define IS_3DES(flags)                  (flags & QCE_ALG_3DES)
#define IS_AES(flags)                   (flags & QCE_ALG_AES)

#define IS_SHA1(flags)                  (flags & QCE_HASH_SHA1)
#define IS_SHA256(flags)                (flags & QCE_HASH_SHA256)
#define IS_SHA1_HMAC(flags)             (flags & QCE_HASH_SHA1_HMAC)
#define IS_SHA256_HMAC(flags)           (flags & QCE_HASH_SHA256_HMAC)
#define IS_CMAC(flags)                  (flags & QCE_HASH_AES_CMAC)
#define IS_SHA(flags)                   (IS_SHA1(flags) || IS_SHA256(flags))
#define IS_SHA_HMAC(flags)              \
                (IS_SHA1_HMAC(flags) || IS_SHA256_HMAC(flags))

#define IS_CBC(mode)                    (mode & QCE_MODE_CBC)
#define IS_ECB(mode)                    (mode & QCE_MODE_ECB)
#define IS_CTR(mode)                    (mode & QCE_MODE_CTR)
#define IS_XTS(mode)                    (mode & QCE_MODE_XTS)
#define IS_CCM(mode)                    (mode & QCE_MODE_CCM)
#define IS_CCM_RFC4309(mode)            ((mode) & QCE_MODE_CCM_RFC4309)

#define IS_ENCRYPT(dir)                 (dir & QCE_ENCRYPT)
#define IS_DECRYPT(dir)                 (dir & QCE_DECRYPT)

struct qce_alg_template {
        struct list_head entry;
        u32 crypto_alg_type;
        unsigned long alg_flags;
        const u32 *std_iv;
        union {
                struct skcipher_alg skcipher;
                struct ahash_alg ahash;
                struct aead_alg aead;
        } alg;
        struct qce_device *qce;
        const u8 *hash_zero;
        const u32 digest_size;
};

void qce_cpu_to_be32p_array(__be32 *dst, const u8 *src, unsigned int len);
int qce_check_status(struct qce_device *qce, u32 *status);
void qce_get_version(struct qce_device *qce, u32 *major, u32 *minor, u32 *step);
int qce_start(struct crypto_async_request *async_req, u32 type);

#endif /* _COMMON_H_ */