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- /*
- * QTI Crypto Engine driver API
- *
- * Copyright (c) 2010-2017, The Linux Foundation. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 and
- * only version 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- */
- #ifndef __CRYPTO_MSM_QCE_H
- #define __CRYPTO_MSM_QCE_H
- #include <linux/types.h>
- #include <linux/platform_device.h>
- #include <linux/crypto.h>
- #include <crypto/algapi.h>
- #include <crypto/aes.h>
- #include <crypto/des.h>
- #include <crypto/sha.h>
- #include <crypto/aead.h>
- #include <crypto/authenc.h>
- #include <crypto/scatterwalk.h>
- /* SHA digest size in bytes */
- #define SHA256_DIGESTSIZE 32
- #define SHA1_DIGESTSIZE 20
- #define AES_CE_BLOCK_SIZE 16
- /* key size in bytes */
- #define HMAC_KEY_SIZE (SHA1_DIGESTSIZE) /* hmac-sha1 */
- #define SHA_HMAC_KEY_SIZE 64
- #define DES_KEY_SIZE 8
- #define TRIPLE_DES_KEY_SIZE 24
- #define AES128_KEY_SIZE 16
- #define AES192_KEY_SIZE 24
- #define AES256_KEY_SIZE 32
- #define MAX_CIPHER_KEY_SIZE AES256_KEY_SIZE
- /* iv length in bytes */
- #define AES_IV_LENGTH 16
- #define DES_IV_LENGTH 8
- #define MAX_IV_LENGTH AES_IV_LENGTH
- /* Maximum number of bytes per transfer */
- #define QCE_MAX_OPER_DATA 0xFF00
- /* Maximum Nonce bytes */
- #define MAX_NONCE 16
- /* Crypto clock control flags */
- #define QCE_CLK_ENABLE_FIRST 1
- #define QCE_BW_REQUEST_FIRST 2
- #define QCE_CLK_DISABLE_FIRST 3
- #define QCE_BW_REQUEST_RESET_FIRST 4
- typedef void (*qce_comp_func_ptr_t)(void *areq,
- unsigned char *icv, unsigned char *iv, int ret);
- /* Cipher algorithms supported */
- enum qce_cipher_alg_enum {
- CIPHER_ALG_DES = 0,
- CIPHER_ALG_3DES = 1,
- CIPHER_ALG_AES = 2,
- CIPHER_ALG_LAST
- };
- /* Hash and hmac algorithms supported */
- enum qce_hash_alg_enum {
- QCE_HASH_SHA1 = 0,
- QCE_HASH_SHA256 = 1,
- QCE_HASH_SHA1_HMAC = 2,
- QCE_HASH_SHA256_HMAC = 3,
- QCE_HASH_AES_CMAC = 4,
- QCE_HASH_LAST
- };
- /* Cipher encryption/decryption operations */
- enum qce_cipher_dir_enum {
- QCE_ENCRYPT = 0,
- QCE_DECRYPT = 1,
- QCE_CIPHER_DIR_LAST
- };
- /* Cipher algorithms modes */
- enum qce_cipher_mode_enum {
- QCE_MODE_CBC = 0,
- QCE_MODE_ECB = 1,
- QCE_MODE_CTR = 2,
- QCE_MODE_XTS = 3,
- QCE_MODE_CCM = 4,
- QCE_CIPHER_MODE_LAST
- };
- /* Cipher operation type */
- enum qce_req_op_enum {
- QCE_REQ_ABLK_CIPHER = 0,
- QCE_REQ_ABLK_CIPHER_NO_KEY = 1,
- QCE_REQ_AEAD = 2,
- QCE_REQ_LAST
- };
- /* Algorithms/features supported in CE HW engine */
- struct ce_hw_support {
- bool sha1_hmac_20; /* Supports 20 bytes of HMAC key*/
- bool sha1_hmac; /* supports max HMAC key of 64 bytes*/
- bool sha256_hmac; /* supports max HMAC key of 64 bytes*/
- bool sha_hmac; /* supports SHA1 and SHA256 MAX HMAC key of 64 bytes*/
- bool cmac;
- bool aes_key_192;
- bool aes_xts;
- bool aes_ccm;
- bool ota;
- bool aligned_only;
- bool bam;
- bool is_shared;
- bool hw_key;
- bool use_sw_aes_cbc_ecb_ctr_algo;
- bool use_sw_aead_algo;
- bool use_sw_aes_xts_algo;
- bool use_sw_ahash_algo;
- bool use_sw_hmac_algo;
- bool use_sw_aes_ccm_algo;
- bool clk_mgmt_sus_res;
- bool req_bw_before_clk;
- unsigned int ce_device;
- unsigned int ce_hw_instance;
- unsigned int max_request;
- };
- /* Sha operation parameters */
- struct qce_sha_req {
- qce_comp_func_ptr_t qce_cb; /* call back */
- enum qce_hash_alg_enum alg; /* sha algorithm */
- unsigned char *digest; /* sha digest */
- struct scatterlist *src; /* pointer to scatter list entry */
- uint32_t auth_data[4]; /* byte count */
- unsigned char *authkey; /* auth key */
- unsigned int authklen; /* auth key length */
- bool first_blk; /* first block indicator */
- bool last_blk; /* last block indicator */
- unsigned int size; /* data length in bytes */
- void *areq;
- unsigned int flags;
- };
- struct qce_req {
- enum qce_req_op_enum op; /* operation type */
- qce_comp_func_ptr_t qce_cb; /* call back */
- void *areq;
- enum qce_cipher_alg_enum alg; /* cipher algorithms*/
- enum qce_cipher_dir_enum dir; /* encryption? decryption? */
- enum qce_cipher_mode_enum mode; /* algorithm mode */
- enum qce_hash_alg_enum auth_alg;/* authentication algorithm for aead */
- unsigned char *authkey; /* authentication key */
- unsigned int authklen; /* authentication key kength */
- unsigned int authsize; /* authentication key kength */
- unsigned char nonce[MAX_NONCE];/* nonce for ccm mode */
- unsigned char *assoc; /* Ptr to formatted associated data */
- unsigned int assoclen; /* Formatted associated data length */
- struct scatterlist *asg; /* Formatted associated data sg */
- unsigned char *enckey; /* cipher key */
- unsigned int encklen; /* cipher key length */
- unsigned char *iv; /* initialization vector */
- unsigned int ivsize; /* initialization vector size*/
- unsigned int cryptlen; /* data length */
- unsigned int use_pmem; /* is source of data PMEM allocated? */
- struct qcedev_pmem_info *pmem; /* pointer to pmem_info structure*/
- unsigned int flags;
- };
- struct qce_pm_table {
- int (*suspend)(void *handle);
- int (*resume)(void *handle);
- };
- extern struct qce_pm_table qce_pm_table;
- void *qce_open(struct platform_device *pdev, int *rc);
- int qce_close(void *handle);
- int qce_aead_req(void *handle, struct qce_req *req);
- int qce_ablk_cipher_req(void *handle, struct qce_req *req);
- int qce_hw_support(void *handle, struct ce_hw_support *support);
- int qce_process_sha_req(void *handle, struct qce_sha_req *s_req);
- int qce_enable_clk(void *handle);
- int qce_disable_clk(void *handle);
- void qce_get_driver_stats(void *handle);
- void qce_clear_driver_stats(void *handle);
- #endif /* __CRYPTO_MSM_QCE_H */
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