/* SPDX-License-Identifier: GPL-2.0 */ /* * sun8i-ss.h - hardware cryptographic offloader for * Allwinner A80/A83T SoC * * Copyright (C) 2016-2019 Corentin LABBE <[email protected]> */ #include <crypto/aes.h> #include <crypto/des.h> #include <crypto/engine.h> #include <crypto/rng.h> #include <crypto/skcipher.h> #include <linux/atomic.h> #include <linux/debugfs.h> #include <linux/crypto.h> #include <crypto/internal/hash.h> #include <crypto/md5.h> #include <crypto/sha1.h> #include <crypto/sha2.h> #define SS_START … #define SS_ENCRYPTION … #define SS_DECRYPTION … #define SS_ALG_AES … #define SS_ALG_DES … #define SS_ALG_3DES … #define SS_ALG_MD5 … #define SS_ALG_PRNG … #define SS_ALG_SHA1 … #define SS_ALG_SHA224 … #define SS_ALG_SHA256 … #define SS_CTL_REG … #define SS_INT_CTL_REG … #define SS_INT_STA_REG … #define SS_KEY_ADR_REG … #define SS_IV_ADR_REG … #define SS_SRC_ADR_REG … #define SS_DST_ADR_REG … #define SS_LEN_ADR_REG … #define SS_ID_NOTSUPP … #define SS_ID_CIPHER_AES … #define SS_ID_CIPHER_DES … #define SS_ID_CIPHER_DES3 … #define SS_ID_CIPHER_MAX … #define SS_ID_OP_ECB … #define SS_ID_OP_CBC … #define SS_ID_OP_MAX … #define SS_AES_128BITS … #define SS_AES_192BITS … #define SS_AES_256BITS … #define SS_OP_ECB … #define SS_OP_CBC … #define SS_ID_HASH_MD5 … #define SS_ID_HASH_SHA1 … #define SS_ID_HASH_SHA224 … #define SS_ID_HASH_SHA256 … #define SS_ID_HASH_MAX … #define SS_FLOW0 … #define SS_FLOW1 … #define SS_PRNG_CONTINUE … #define MAX_SG … #define MAXFLOW … #define SS_MAX_CLOCKS … #define SS_DIE_ID_SHIFT … #define SS_DIE_ID_MASK … #define PRNG_DATA_SIZE … #define PRNG_SEED_SIZE … #define MAX_PAD_SIZE … /* * struct ss_clock - Describe clocks used by sun8i-ss * @name: Name of clock needed by this variant * @freq: Frequency to set for each clock * @max_freq: Maximum frequency for each clock */ struct ss_clock { … }; /* * struct ss_variant - Describe SS capability for each variant hardware * @alg_cipher: list of supported ciphers. for each SS_ID_ this will give the * coresponding SS_ALG_XXX value * @alg_hash: list of supported hashes. for each SS_ID_ this will give the * corresponding SS_ALG_XXX value * @op_mode: list of supported block modes * @ss_clks: list of clock needed by this variant */ struct ss_variant { … }; struct sginfo { … }; /* * struct sun8i_ss_flow - Information used by each flow * @engine: ptr to the crypto_engine for this flow * @complete: completion for the current task on this flow * @status: set to 1 by interrupt if task is done * @stat_req: number of request done by this flow * @iv: list of IV to use for each step * @biv: buffer which contain the backuped IV * @pad: padding buffer for hash operations * @result: buffer for storing the result of hash operations */ struct sun8i_ss_flow { … }; /* * struct sun8i_ss_dev - main container for all this driver information * @base: base address of SS * @ssclks: clocks used by SS * @reset: pointer to reset controller * @dev: the platform device * @mlock: Control access to device registers * @flows: array of all flow * @flow: flow to use in next request * @variant: pointer to variant specific data * @dbgfs_dir: Debugfs dentry for statistic directory * @dbgfs_stats: Debugfs dentry for statistic counters */ struct sun8i_ss_dev { … }; /* * struct sun8i_cipher_req_ctx - context for a skcipher request * @t_src: list of mapped SGs with their size * @t_dst: list of mapped SGs with their size * @p_key: DMA address of the key * @p_iv: DMA address of the IVs * @niv: Number of IVs DMA mapped * @method: current algorithm for this request * @op_mode: op_mode for this request * @op_dir: direction (encrypt vs decrypt) for this request * @flow: the flow to use for this request * @ivlen: size of IVs * @keylen: keylen for this request * @fallback_req: request struct for invoking the fallback skcipher TFM */ struct sun8i_cipher_req_ctx { … }; /* * struct sun8i_cipher_tfm_ctx - context for a skcipher TFM * @key: pointer to key data * @keylen: len of the key * @ss: pointer to the private data of driver handling this TFM * @fallback_tfm: pointer to the fallback TFM */ struct sun8i_cipher_tfm_ctx { … }; /* * struct sun8i_ss_prng_ctx - context for PRNG TFM * @seed: The seed to use * @slen: The size of the seed */ struct sun8i_ss_rng_tfm_ctx { … }; /* * struct sun8i_ss_hash_tfm_ctx - context for an ahash TFM * @fallback_tfm: pointer to the fallback TFM * @ss: pointer to the private data of driver handling this TFM */ struct sun8i_ss_hash_tfm_ctx { … }; /* * struct sun8i_ss_hash_reqctx - context for an ahash request * @t_src: list of DMA address and size for source SGs * @t_dst: list of DMA address and size for destination SGs * @fallback_req: pre-allocated fallback request * @method: the register value for the algorithm used by this request * @flow: the flow to use for this request */ struct sun8i_ss_hash_reqctx { … }; /* * struct sun8i_ss_alg_template - crypto_alg template * @type: the CRYPTO_ALG_TYPE for this template * @ss_algo_id: the SS_ID for this template * @ss_blockmode: the type of block operation SS_ID * @ss: pointer to the sun8i_ss_dev structure associated with * this template * @alg: one of sub struct must be used * @stat_req: number of request done on this template * @stat_fb: number of request which has fallbacked * @stat_bytes: total data size done by this template */ struct sun8i_ss_alg_template { … }; int sun8i_ss_aes_setkey(struct crypto_skcipher *tfm, const u8 *key, unsigned int keylen); int sun8i_ss_des3_setkey(struct crypto_skcipher *tfm, const u8 *key, unsigned int keylen); int sun8i_ss_cipher_init(struct crypto_tfm *tfm); void sun8i_ss_cipher_exit(struct crypto_tfm *tfm); int sun8i_ss_handle_cipher_request(struct crypto_engine *engine, void *areq); int sun8i_ss_skdecrypt(struct skcipher_request *areq); int sun8i_ss_skencrypt(struct skcipher_request *areq); int sun8i_ss_get_engine_number(struct sun8i_ss_dev *ss); int sun8i_ss_run_task(struct sun8i_ss_dev *ss, struct sun8i_cipher_req_ctx *rctx, const char *name); int sun8i_ss_prng_generate(struct crypto_rng *tfm, const u8 *src, unsigned int slen, u8 *dst, unsigned int dlen); int sun8i_ss_prng_seed(struct crypto_rng *tfm, const u8 *seed, unsigned int slen); int sun8i_ss_prng_init(struct crypto_tfm *tfm); void sun8i_ss_prng_exit(struct crypto_tfm *tfm); int sun8i_ss_hash_init_tfm(struct crypto_ahash *tfm); void sun8i_ss_hash_exit_tfm(struct crypto_ahash *tfm); int sun8i_ss_hash_init(struct ahash_request *areq); int sun8i_ss_hash_export(struct ahash_request *areq, void *out); int sun8i_ss_hash_import(struct ahash_request *areq, const void *in); int sun8i_ss_hash_final(struct ahash_request *areq); int sun8i_ss_hash_update(struct ahash_request *areq); int sun8i_ss_hash_finup(struct ahash_request *areq); int sun8i_ss_hash_digest(struct ahash_request *areq); int sun8i_ss_hash_run(struct crypto_engine *engine, void *breq); int sun8i_ss_hmac_setkey(struct crypto_ahash *ahash, const u8 *key, unsigned int keylen);
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