/* * struct ce_clock - Describe clocks used by sun8i-ce * @name: Name of clock needed by this variant * @freq: Frequency to set for each clock * @max_freq: Maximum frequency for each clock (generally given by datasheet)
*/ struct ce_clock { constchar *name; unsignedlong freq; unsignedlong max_freq;
};
/* * struct ce_variant - Describe CE capability for each variant hardware * @alg_cipher: list of supported ciphers. for each CE_ID_ this will give the * coresponding CE_ALG_XXX value * @alg_hash: list of supported hashes. for each CE_ID_ this will give the * corresponding CE_ALG_XXX value * @op_mode: list of supported block modes * @cipher_t_dlen_in_bytes: Does the request size for cipher is in * bytes or words * @hash_t_dlen_in_bytes: Does the request size for hash is in * bits or words * @prng_t_dlen_in_bytes: Does the request size for PRNG is in * bytes or words * @trng_t_dlen_in_bytes: Does the request size for TRNG is in * bytes or words * @ce_clks: list of clocks needed by this variant * @esr: The type of error register * @prng: The CE_ALG_XXX value for the PRNG * @trng: The CE_ALG_XXX value for the TRNG
*/ struct ce_variant { char alg_cipher[CE_ID_CIPHER_MAX]; char alg_hash[CE_ID_HASH_MAX];
u32 op_mode[CE_ID_OP_MAX]; bool cipher_t_dlen_in_bytes; bool hash_t_dlen_in_bits; bool prng_t_dlen_in_bytes; bool trng_t_dlen_in_bytes; bool needs_word_addresses; struct ce_clock ce_clks[CE_MAX_CLOCKS]; int esr; unsignedchar prng; unsignedchar trng;
};
/* * struct ce_task - CE Task descriptor * The structure of this descriptor could be found in the datasheet
*/ struct ce_task {
__le32 t_id;
__le32 t_common_ctl;
__le32 t_sym_ctl;
__le32 t_asym_ctl;
__le32 t_key;
__le32 t_iv;
__le32 t_ctr;
__le32 t_dlen; struct sginfo t_src[MAX_SG]; struct sginfo t_dst[MAX_SG];
__le32 next;
__le32 reserved[3];
} __packed __aligned(8);
/* * struct sun8i_ce_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 * @t_phy: Physical address of task * @tl: pointer to the current ce_task for this flow * @backup_iv: buffer which contain the next IV to store * @bounce_iv: buffer which contain the IV * @stat_req: number of request done by this flow
*/ struct sun8i_ce_flow { struct crypto_engine *engine; struct completion complete; int status;
dma_addr_t t_phy; struct ce_task *tl; void *backup_iv; void *bounce_iv; #ifdef CONFIG_CRYPTO_DEV_SUN8I_CE_DEBUG unsignedlong stat_req; #endif
};
/* * struct sun8i_ce_dev - main container for all this driver information * @base: base address of CE * @ceclks: clocks used by CE * @reset: pointer to reset controller * @dev: the platform device * @mlock: Control access to device registers * @rnglock: Control access to the RNG (dedicated channel 3) * @chanlist: 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_ce_dev { void __iomem *base; struct clk *ceclks[CE_MAX_CLOCKS]; struct reset_control *reset; struct device *dev; struct mutex mlock; struct mutex rnglock; struct sun8i_ce_flow *chanlist;
atomic_t flow; conststruct ce_variant *variant; #ifdef CONFIG_CRYPTO_DEV_SUN8I_CE_DEBUG struct dentry *dbgfs_dir; struct dentry *dbgfs_stats; #endif #ifdef CONFIG_CRYPTO_DEV_SUN8I_CE_TRNG struct hwrng trng; #ifdef CONFIG_CRYPTO_DEV_SUN8I_CE_DEBUG unsignedlong hwrng_stat_req; unsignedlong hwrng_stat_bytes; #endif #endif
};
/* * struct sun8i_cipher_req_ctx - context for a skcipher request * @op_dir: direction (encrypt vs decrypt) for this request * @flow: the flow to use for this request * @nr_sgs: The number of source SG (as given by dma_map_sg()) * @nr_sgd: The number of destination SG (as given by dma_map_sg()) * @addr_iv: The IV addr returned by dma_map_single, need to unmap later * @addr_key: The key addr returned by dma_map_single, need to unmap later * @fallback_req: request struct for invoking the fallback skcipher TFM
*/ struct sun8i_cipher_req_ctx {
u32 op_dir; int flow; int nr_sgs; int nr_sgd;
dma_addr_t addr_iv;
dma_addr_t addr_key; struct skcipher_request fallback_req; // keep at the end
};
/* * struct sun8i_cipher_tfm_ctx - context for a skcipher TFM * @key: pointer to key data * @keylen: len of the key * @ce: pointer to the private data of driver handling this TFM * @fallback_tfm: pointer to the fallback TFM
*/ struct sun8i_cipher_tfm_ctx {
u32 *key;
u32 keylen; struct sun8i_ce_dev *ce; struct crypto_skcipher *fallback_tfm;
};
/* * struct sun8i_ce_hash_tfm_ctx - context for an ahash TFM * @ce: pointer to the private data of driver handling this TFM * @fallback_tfm: pointer to the fallback TFM
*/ struct sun8i_ce_hash_tfm_ctx { struct sun8i_ce_dev *ce; struct crypto_ahash *fallback_tfm;
};
/* * struct sun8i_ce_hash_reqctx - context for an ahash request * @fallback_req: pre-allocated fallback request * @flow: the flow to use for this request
*/ struct sun8i_ce_hash_reqctx { int flow; struct ahash_request fallback_req; // keep at the end
};
/* * struct sun8i_ce_prng_ctx - context for PRNG TFM * @seed: The seed to use * @slen: The size of the seed
*/ struct sun8i_ce_rng_tfm_ctx { void *seed; unsignedint slen;
};
/* * struct sun8i_ce_alg_template - crypto_alg template * @type: the CRYPTO_ALG_TYPE for this template * @ce_algo_id: the CE_ID for this template * @ce_blockmode: the type of block operation CE_ID * @ce: pointer to the sun8i_ce_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_ce_alg_template {
u32 type;
u32 ce_algo_id;
u32 ce_blockmode; struct sun8i_ce_dev *ce; union { struct skcipher_engine_alg skcipher; struct ahash_engine_alg hash; struct rng_alg rng;
} alg; unsignedlong stat_req; unsignedlong stat_fb; unsignedlong stat_bytes; unsignedlong stat_fb_maxsg; unsignedlong stat_fb_leniv; unsignedlong stat_fb_len0; unsignedlong stat_fb_mod16; unsignedlong stat_fb_srcali; unsignedlong stat_fb_srclen; unsignedlong stat_fb_dstali; unsignedlong stat_fb_dstlen; char fbname[CRYPTO_MAX_ALG_NAME];
};
int sun8i_ce_aes_setkey(struct crypto_skcipher *tfm, const u8 *key, unsignedint keylen); int sun8i_ce_des3_setkey(struct crypto_skcipher *tfm, const u8 *key, unsignedint keylen); int sun8i_ce_cipher_init(struct crypto_tfm *tfm); void sun8i_ce_cipher_exit(struct crypto_tfm *tfm); int sun8i_ce_cipher_do_one(struct crypto_engine *engine, void *areq); int sun8i_ce_skdecrypt(struct skcipher_request *areq); int sun8i_ce_skencrypt(struct skcipher_request *areq);
int sun8i_ce_get_engine_number(struct sun8i_ce_dev *ce);
int sun8i_ce_run_task(struct sun8i_ce_dev *ce, int flow, constchar *name);
int sun8i_ce_hash_init_tfm(struct crypto_ahash *tfm); void sun8i_ce_hash_exit_tfm(struct crypto_ahash *tfm); int sun8i_ce_hash_init(struct ahash_request *areq); int sun8i_ce_hash_export(struct ahash_request *areq, void *out); int sun8i_ce_hash_import(struct ahash_request *areq, constvoid *in); int sun8i_ce_hash_final(struct ahash_request *areq); int sun8i_ce_hash_update(struct ahash_request *areq); int sun8i_ce_hash_finup(struct ahash_request *areq); int sun8i_ce_hash_digest(struct ahash_request *areq); int sun8i_ce_hash_run(struct crypto_engine *engine, void *breq);
int sun8i_ce_prng_generate(struct crypto_rng *tfm, const u8 *src, unsignedint slen, u8 *dst, unsignedint dlen); int sun8i_ce_prng_seed(struct crypto_rng *tfm, const u8 *seed, unsignedint slen); void sun8i_ce_prng_exit(struct crypto_tfm *tfm); int sun8i_ce_prng_init(struct crypto_tfm *tfm);
int sun8i_ce_hwrng_register(struct sun8i_ce_dev *ce); void sun8i_ce_hwrng_unregister(struct sun8i_ce_dev *ce);
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