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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 | /* SPDX-License-Identifier: GPL-2.0 */ /* * sun8i-ce.h - hardware cryptographic offloader for * Allwinner H3/A64/H5/H2+/H6 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/skcipher.h> #include <linux/atomic.h> #include <linux/debugfs.h> #include <linux/crypto.h> #include <linux/hw_random.h> #include <crypto/internal/hash.h> #include <crypto/md5.h> #include <crypto/rng.h> #include <crypto/sha1.h> #include <crypto/sha2.h> /* CE Registers */ #define CE_TDQ 0x00 #define CE_CTR 0x04 #define CE_ICR 0x08 #define CE_ISR 0x0C #define CE_TLR 0x10 #define CE_TSR 0x14 #define CE_ESR 0x18 #define CE_CSSGR 0x1C #define CE_CDSGR 0x20 #define CE_CSAR 0x24 #define CE_CDAR 0x28 #define CE_TPR 0x2C /* Used in struct ce_task */ /* ce_task common */ #define CE_ENCRYPTION 0 #define CE_DECRYPTION BIT(8) #define CE_COMM_INT BIT(31) /* ce_task symmetric */ #define CE_AES_128BITS 0 #define CE_AES_192BITS 1 #define CE_AES_256BITS 2 #define CE_OP_ECB 0 #define CE_OP_CBC (1 << 8) #define CE_ALG_AES 0 #define CE_ALG_DES 1 #define CE_ALG_3DES 2 #define CE_ALG_MD5 16 #define CE_ALG_SHA1 17 #define CE_ALG_SHA224 18 #define CE_ALG_SHA256 19 #define CE_ALG_SHA384 20 #define CE_ALG_SHA512 21 #define CE_ALG_TRNG 48 #define CE_ALG_PRNG 49 #define CE_ALG_TRNG_V2 0x1c #define CE_ALG_PRNG_V2 0x1d /* Used in ce_variant */ #define CE_ID_NOTSUPP 0xFF #define CE_ID_CIPHER_AES 0 #define CE_ID_CIPHER_DES 1 #define CE_ID_CIPHER_DES3 2 #define CE_ID_CIPHER_MAX 3 #define CE_ID_HASH_MD5 0 #define CE_ID_HASH_SHA1 1 #define CE_ID_HASH_SHA224 2 #define CE_ID_HASH_SHA256 3 #define CE_ID_HASH_SHA384 4 #define CE_ID_HASH_SHA512 5 #define CE_ID_HASH_MAX 6 #define CE_ID_OP_ECB 0 #define CE_ID_OP_CBC 1 #define CE_ID_OP_MAX 2 /* Used in CE registers */ #define CE_ERR_ALGO_NOTSUP BIT(0) #define CE_ERR_DATALEN BIT(1) #define CE_ERR_KEYSRAM BIT(2) #define CE_ERR_ADDR_INVALID BIT(5) #define CE_ERR_KEYLADDER BIT(6) #define ESR_H3 0 #define ESR_A64 1 #define ESR_R40 2 #define ESR_H5 3 #define ESR_H6 4 #define ESR_D1 5 #define PRNG_DATA_SIZE (160 / 8) #define PRNG_SEED_SIZE DIV_ROUND_UP(175, 8) #define PRNG_LD BIT(17) #define CE_DIE_ID_SHIFT 16 #define CE_DIE_ID_MASK 0x07 #define MAX_SG 8 #define CE_MAX_CLOCKS 4 #define MAXFLOW 4 /* * 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 { const char *name; unsigned long freq; unsigned long 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; unsigned char prng; unsigned char trng; }; struct sginfo { __le32 addr; __le32 len; } __packed; /* * 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; int timeout; struct ce_task *tl; void *backup_iv; void *bounce_iv; #ifdef CONFIG_CRYPTO_DEV_SUN8I_CE_DEBUG unsigned long 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; const struct 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 unsigned long hwrng_stat_req; unsigned long hwrng_stat_bytes; #endif #endif }; static inline u32 desc_addr_val(struct sun8i_ce_dev *dev, dma_addr_t addr) { if (dev->variant->needs_word_addresses) return addr / 4; return addr; } static inline __le32 desc_addr_val_le32(struct sun8i_ce_dev *dev, dma_addr_t addr) { return cpu_to_le32(desc_addr_val(dev, addr)); } /* * 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 * @ivlen: size of bounce_iv * @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; unsigned int ivlen; 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 { struct ahash_request fallback_req; int flow; }; /* * 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; unsigned int 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; unsigned long stat_req; unsigned long stat_fb; unsigned long stat_bytes; unsigned long stat_fb_maxsg; unsigned long stat_fb_leniv; unsigned long stat_fb_len0; unsigned long stat_fb_mod16; unsigned long stat_fb_srcali; unsigned long stat_fb_srclen; unsigned long stat_fb_dstali; unsigned long stat_fb_dstlen; char fbname[CRYPTO_MAX_ALG_NAME]; }; int sun8i_ce_aes_setkey(struct crypto_skcipher *tfm, const u8 *key, unsigned int keylen); int sun8i_ce_des3_setkey(struct crypto_skcipher *tfm, const u8 *key, unsigned int 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, const char *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, const void *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, unsigned int slen, u8 *dst, unsigned int dlen); int sun8i_ce_prng_seed(struct crypto_rng *tfm, const u8 *seed, unsigned int 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); |