| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Corentin Labbe | 900 | 97.51% | 10 | 76.92% |
| Herbert Xu | 13 | 1.41% | 1 | 7.69% |
| Ard Biesheuvel | 6 | 0.65% | 1 | 7.69% |
| Eric Biggers | 4 | 0.43% | 1 | 7.69% |
| Total | 923 | 13 |
/* SPDX-License-Identifier: GPL-2.0 */ /* * sun8i-ss.h - hardware cryptographic offloader for * Allwinner A80/A83T SoC * * Copyright (C) 2016-2019 Corentin LABBE <clabbe.montjoie@gmail.com> */ #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 1 #define SS_ENCRYPTION 0 #define SS_DECRYPTION BIT(6) #define SS_ALG_AES 0 #define SS_ALG_DES (1 << 2) #define SS_ALG_3DES (2 << 2) #define SS_ALG_MD5 (3 << 2) #define SS_ALG_PRNG (4 << 2) #define SS_ALG_SHA1 (6 << 2) #define SS_ALG_SHA224 (7 << 2) #define SS_ALG_SHA256 (8 << 2) #define SS_CTL_REG 0x00 #define SS_INT_CTL_REG 0x04 #define SS_INT_STA_REG 0x08 #define SS_KEY_ADR_REG 0x10 #define SS_IV_ADR_REG 0x18 #define SS_SRC_ADR_REG 0x20 #define SS_DST_ADR_REG 0x28 #define SS_LEN_ADR_REG 0x30 #define SS_ID_NOTSUPP 0xFF #define SS_ID_CIPHER_AES 0 #define SS_ID_CIPHER_DES 1 #define SS_ID_CIPHER_DES3 2 #define SS_ID_CIPHER_MAX 3 #define SS_ID_OP_ECB 0 #define SS_ID_OP_CBC 1 #define SS_ID_OP_MAX 2 #define SS_AES_128BITS 0 #define SS_AES_192BITS 1 #define SS_AES_256BITS 2 #define SS_OP_ECB 0 #define SS_OP_CBC (1 << 13) #define SS_ID_HASH_MD5 0 #define SS_ID_HASH_SHA1 1 #define SS_ID_HASH_SHA224 2 #define SS_ID_HASH_SHA256 3 #define SS_ID_HASH_MAX 4 #define SS_FLOW0 BIT(30) #define SS_FLOW1 BIT(31) #define SS_PRNG_CONTINUE BIT(18) #define MAX_SG 8 #define MAXFLOW 2 #define SS_MAX_CLOCKS 2 #define SS_DIE_ID_SHIFT 20 #define SS_DIE_ID_MASK 0x07 #define PRNG_DATA_SIZE (160 / 8) #define PRNG_SEED_SIZE DIV_ROUND_UP(175, 8) #define MAX_PAD_SIZE 4096 /* * 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 { const char *name; unsigned long freq; unsigned long max_freq; }; /* * 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 { char alg_cipher[SS_ID_CIPHER_MAX]; char alg_hash[SS_ID_HASH_MAX]; u32 op_mode[SS_ID_OP_MAX]; struct ss_clock ss_clks[SS_MAX_CLOCKS]; }; struct sginfo { u32 addr; u32 len; }; /* * 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 crypto_engine *engine; struct completion complete; int status; u8 *iv[MAX_SG]; u8 *biv; void *pad; void *result; #ifdef CONFIG_CRYPTO_DEV_SUN8I_SS_DEBUG unsigned long stat_req; #endif }; /* * 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 { void __iomem *base; struct clk *ssclks[SS_MAX_CLOCKS]; struct reset_control *reset; struct device *dev; struct mutex mlock; struct sun8i_ss_flow *flows; atomic_t flow; const struct ss_variant *variant; #ifdef CONFIG_CRYPTO_DEV_SUN8I_SS_DEBUG struct dentry *dbgfs_dir; struct dentry *dbgfs_stats; #endif }; /* * 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 sginfo t_src[MAX_SG]; struct sginfo t_dst[MAX_SG]; u32 p_key; u32 p_iv[MAX_SG]; int niv; u32 method; u32 op_mode; u32 op_dir; int flow; unsigned int ivlen; unsigned int keylen; 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 * @ss: 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_ss_dev *ss; struct crypto_skcipher *fallback_tfm; }; /* * 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 { void *seed; unsigned int slen; }; /* * 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 crypto_ahash *fallback_tfm; struct sun8i_ss_dev *ss; u8 *ipad; u8 *opad; u8 key[SHA256_BLOCK_SIZE]; int keylen; }; /* * 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 sginfo t_src[MAX_SG]; struct sginfo t_dst[MAX_SG]; struct ahash_request fallback_req; u32 method; int flow; }; /* * 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 { u32 type; u32 ss_algo_id; u32 ss_blockmode; struct sun8i_ss_dev *ss; union { struct skcipher_engine_alg skcipher; struct rng_alg rng; struct ahash_engine_alg hash; } alg; unsigned long stat_req; unsigned long stat_fb; unsigned long stat_bytes; unsigned long stat_fb_len; unsigned long stat_fb_sglen; unsigned long stat_fb_align; unsigned long stat_fb_sgnum; char fbname[CRYPTO_MAX_ALG_NAME]; }; 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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