projects / mirror_ubuntu-jammy-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 81bef015 CH |
1 | /* |
| 2 | * Intel IXP4xx NPE-C crypto driver | |
| 3 | * | |
| 4 | * Copyright (C) 2008 Christian Hohnstaedt <chohnstaedt@innominate.com> | |
| 5 | * | |
| 6 | * This program is free software; you can redistribute it and/or modify it | |
| 7 | * under the terms of version 2 of the GNU General Public License | |
| 8 | * as published by the Free Software Foundation. | |
| 9 | * | |
| 10 | */ | |
| 11 | ||
| 12 | #include <linux/platform_device.h> | |
| 13 | #include <linux/dma-mapping.h> | |
| 14 | #include <linux/dmapool.h> | |
| 15 | #include <linux/crypto.h> | |
| 16 | #include <linux/kernel.h> | |
| 17 | #include <linux/rtnetlink.h> | |
| 18 | #include <linux/interrupt.h> | |
| 19 | #include <linux/spinlock.h> | |
| 5a0e3ad6 | 20 | #include <linux/gfp.h> |
| 75258723 | 21 | #include <linux/module.h> |
| 81bef015 CH |
22 | |
| 23 | #include <crypto/ctr.h> | |
| 24 | #include <crypto/des.h> | |
| 25 | #include <crypto/aes.h> | |
| 26 | #include <crypto/sha.h> | |
| 27 | #include <crypto/algapi.h> | |
| 28 | #include <crypto/aead.h> | |
| 29 | #include <crypto/authenc.h> | |
| 30 | #include <crypto/scatterwalk.h> | |
| 31 | ||
| a09e64fb RK |
32 | #include <mach/npe.h> |
| 33 | #include <mach/qmgr.h> | |
| 81bef015 CH |
34 | |
| 35 | #define MAX_KEYLEN 32 | |
| 36 | ||
| 37 | /* hash: cfgword + 2 * digestlen; crypt: keylen + cfgword */ | |
| 38 | #define NPE_CTX_LEN 80 | |
| 39 | #define AES_BLOCK128 16 | |
| 40 | ||
| 41 | #define NPE_OP_HASH_VERIFY 0x01 | |
| 42 | #define NPE_OP_CCM_ENABLE 0x04 | |
| 43 | #define NPE_OP_CRYPT_ENABLE 0x08 | |
| 44 | #define NPE_OP_HASH_ENABLE 0x10 | |
| 45 | #define NPE_OP_NOT_IN_PLACE 0x20 | |
| 46 | #define NPE_OP_HMAC_DISABLE 0x40 | |
| 47 | #define NPE_OP_CRYPT_ENCRYPT 0x80 | |
| 48 | ||
| 49 | #define NPE_OP_CCM_GEN_MIC 0xcc | |
| 50 | #define NPE_OP_HASH_GEN_ICV 0x50 | |
| 51 | #define NPE_OP_ENC_GEN_KEY 0xc9 | |
| 52 | ||
| 53 | #define MOD_ECB 0x0000 | |
| 54 | #define MOD_CTR 0x1000 | |
| 55 | #define MOD_CBC_ENC 0x2000 | |
| 56 | #define MOD_CBC_DEC 0x3000 | |
| 57 | #define MOD_CCM_ENC 0x4000 | |
| 58 | #define MOD_CCM_DEC 0x5000 | |
| 59 | ||
| 60 | #define KEYLEN_128 4 | |
| 61 | #define KEYLEN_192 6 | |
| 62 | #define KEYLEN_256 8 | |
| 63 | ||
| 64 | #define CIPH_DECR 0x0000 | |
| 65 | #define CIPH_ENCR 0x0400 | |
| 66 | ||
| 67 | #define MOD_DES 0x0000 | |
| 68 | #define MOD_TDEA2 0x0100 | |
| 69 | #define MOD_3DES 0x0200 | |
| 70 | #define MOD_AES 0x0800 | |
| 71 | #define MOD_AES128 (0x0800 | KEYLEN_128) | |
| 72 | #define MOD_AES192 (0x0900 | KEYLEN_192) | |
| 73 | #define MOD_AES256 (0x0a00 | KEYLEN_256) | |
| 74 | ||
| 75 | #define MAX_IVLEN 16 | |
| 76 | #define NPE_ID 2 /* NPE C */ | |
| 77 | #define NPE_QLEN 16 | |
| 78 | /* Space for registering when the first | |
| 79 | * NPE_QLEN crypt_ctl are busy */ | |
| 80 | #define NPE_QLEN_TOTAL 64 | |
| 81 | ||
| 82 | #define SEND_QID 29 | |
| 83 | #define RECV_QID 30 | |
| 84 | ||
| 85 | #define CTL_FLAG_UNUSED 0x0000 | |
| 86 | #define CTL_FLAG_USED 0x1000 | |
| 87 | #define CTL_FLAG_PERFORM_ABLK 0x0001 | |
| 88 | #define CTL_FLAG_GEN_ICV 0x0002 | |
| 89 | #define CTL_FLAG_GEN_REVAES 0x0004 | |
| 90 | #define CTL_FLAG_PERFORM_AEAD 0x0008 | |
| 91 | #define CTL_FLAG_MASK 0x000f | |
| 92 | ||
| 93 | #define HMAC_IPAD_VALUE 0x36 | |
| 94 | #define HMAC_OPAD_VALUE 0x5C | |
| 95 | #define HMAC_PAD_BLOCKLEN SHA1_BLOCK_SIZE | |
| 96 | ||
| 97 | #define MD5_DIGEST_SIZE 16 | |
| 98 | ||
| 99 | struct buffer_desc { | |
| 100 | u32 phys_next; | |
| ce057297 | 101 | #ifdef __ARMEB__ |
| 81bef015 CH |
102 | u16 buf_len; |
| 103 | u16 pkt_len; | |
| ce057297 KH |
104 | #else |
| 105 | u16 pkt_len; | |
| 106 | u16 buf_len; | |
| 107 | #endif | |
| 81bef015 CH |
108 | u32 phys_addr; |
| 109 | u32 __reserved[4]; | |
| 110 | struct buffer_desc *next; | |
| 0d44dc59 | 111 | enum dma_data_direction dir; |
| 81bef015 CH |
112 | }; |
| 113 | ||
| 114 | struct crypt_ctl { | |
| ce057297 | 115 | #ifdef __ARMEB__ |
| 81bef015 CH |
116 | u8 mode; /* NPE_OP_* operation mode */ |
| 117 | u8 init_len; | |
| 118 | u16 reserved; | |
| ce057297 KH |
119 | #else |
| 120 | u16 reserved; | |
| 121 | u8 init_len; | |
| 122 | u8 mode; /* NPE_OP_* operation mode */ | |
| 123 | #endif | |
| 81bef015 CH |
124 | u8 iv[MAX_IVLEN]; /* IV for CBC mode or CTR IV for CTR mode */ |
| 125 | u32 icv_rev_aes; /* icv or rev aes */ | |
| 126 | u32 src_buf; | |
| 127 | u32 dst_buf; | |
| ce057297 | 128 | #ifdef __ARMEB__ |
| 81bef015 CH |
129 | u16 auth_offs; /* Authentication start offset */ |
| 130 | u16 auth_len; /* Authentication data length */ | |
| 131 | u16 crypt_offs; /* Cryption start offset */ | |
| 132 | u16 crypt_len; /* Cryption data length */ | |
| ce057297 KH |
133 | #else |
| 134 | u16 auth_len; /* Authentication data length */ | |
| 135 | u16 auth_offs; /* Authentication start offset */ | |
| 136 | u16 crypt_len; /* Cryption data length */ | |
| 137 | u16 crypt_offs; /* Cryption start offset */ | |
| 138 | #endif | |
| 81bef015 CH |
139 | u32 aadAddr; /* Additional Auth Data Addr for CCM mode */ |
| 140 | u32 crypto_ctx; /* NPE Crypto Param structure address */ | |
| 141 | ||
| 142 | /* Used by Host: 4*4 bytes*/ | |
| 143 | unsigned ctl_flags; | |
| 144 | union { | |
| 145 | struct ablkcipher_request *ablk_req; | |
| 146 | struct aead_request *aead_req; | |
| 147 | struct crypto_tfm *tfm; | |
| 148 | } data; | |
| 149 | struct buffer_desc *regist_buf; | |
| 150 | u8 *regist_ptr; | |
| 151 | }; | |
| 152 | ||
| 153 | struct ablk_ctx { | |
| 154 | struct buffer_desc *src; | |
| 155 | struct buffer_desc *dst; | |
| 81bef015 CH |
156 | }; |
| 157 | ||
| 158 | struct aead_ctx { | |
| 159 | struct buffer_desc *buffer; | |
| 81bef015 CH |
160 | struct scatterlist ivlist; |
| 161 | /* used when the hmac is not on one sg entry */ | |
| 162 | u8 *hmac_virt; | |
| 163 | int encrypt; | |
| 164 | }; | |
| 165 | ||
| 166 | struct ix_hash_algo { | |
| 167 | u32 cfgword; | |
| 168 | unsigned char *icv; | |
| 169 | }; | |
| 170 | ||
| 171 | struct ix_sa_dir { | |
| 172 | unsigned char *npe_ctx; | |
| 173 | dma_addr_t npe_ctx_phys; | |
| 174 | int npe_ctx_idx; | |
| 175 | u8 npe_mode; | |
| 176 | }; | |
| 177 | ||
| 178 | struct ixp_ctx { | |
| 179 | struct ix_sa_dir encrypt; | |
| 180 | struct ix_sa_dir decrypt; | |
| 181 | int authkey_len; | |
| 182 | u8 authkey[MAX_KEYLEN]; | |
| 183 | int enckey_len; | |
| 184 | u8 enckey[MAX_KEYLEN]; | |
| 185 | u8 salt[MAX_IVLEN]; | |
| 186 | u8 nonce[CTR_RFC3686_NONCE_SIZE]; | |
| 187 | unsigned salted; | |
| 188 | atomic_t configuring; | |
| 189 | struct completion completion; | |
| 190 | }; | |
| 191 | ||
| 192 | struct ixp_alg { | |
| 193 | struct crypto_alg crypto; | |
| 194 | const struct ix_hash_algo *hash; | |
| 195 | u32 cfg_enc; | |
| 196 | u32 cfg_dec; | |
| 197 | ||
| 198 | int registered; | |
| 199 | }; | |
| 200 | ||
| 201 | static const struct ix_hash_algo hash_alg_md5 = { | |
| 202 | .cfgword = 0xAA010004, | |
| 203 | .icv = "\x01\x23\x45\x67\x89\xAB\xCD\xEF" | |
| 204 | "\xFE\xDC\xBA\x98\x76\x54\x32\x10", | |
| 205 | }; | |
| 206 | static const struct ix_hash_algo hash_alg_sha1 = { | |
| 207 | .cfgword = 0x00000005, | |
| 208 | .icv = "\x67\x45\x23\x01\xEF\xCD\xAB\x89\x98\xBA" | |
| 209 | "\xDC\xFE\x10\x32\x54\x76\xC3\xD2\xE1\xF0", | |
| 210 | }; | |
| 211 | ||
| 212 | static struct npe *npe_c; | |
| 213 | static struct dma_pool *buffer_pool = NULL; | |
| 214 | static struct dma_pool *ctx_pool = NULL; | |
| 215 | ||
| 216 | static struct crypt_ctl *crypt_virt = NULL; | |
| 217 | static dma_addr_t crypt_phys; | |
| 218 | ||
| 219 | static int support_aes = 1; | |
| 220 | ||
| 81bef015 | 221 | #define DRIVER_NAME "ixp4xx_crypto" |
| 81bef015 | 222 | |
| d8cbc3f7 RK |
223 | static struct platform_device *pdev; |
| 224 | static struct device *dev; | |
| 81bef015 CH |
225 | |
| 226 | static inline dma_addr_t crypt_virt2phys(struct crypt_ctl *virt) | |
| 227 | { | |
| 228 | return crypt_phys + (virt - crypt_virt) * sizeof(struct crypt_ctl); | |
| 229 | } | |
| 230 | ||
| 231 | static inline struct crypt_ctl *crypt_phys2virt(dma_addr_t phys) | |
| 232 | { | |
| 233 | return crypt_virt + (phys - crypt_phys) / sizeof(struct crypt_ctl); | |
| 234 | } | |
| 235 | ||
| 236 | static inline u32 cipher_cfg_enc(struct crypto_tfm *tfm) | |
| 237 | { | |
| 238 | return container_of(tfm->__crt_alg, struct ixp_alg,crypto)->cfg_enc; | |
| 239 | } | |
| 240 | ||
| 241 | static inline u32 cipher_cfg_dec(struct crypto_tfm *tfm) | |
| 242 | { | |
| 243 | return container_of(tfm->__crt_alg, struct ixp_alg,crypto)->cfg_dec; | |
| 244 | } | |
| 245 | ||
| 246 | static inline const struct ix_hash_algo *ix_hash(struct crypto_tfm *tfm) | |
| 247 | { | |
| 248 | return container_of(tfm->__crt_alg, struct ixp_alg, crypto)->hash; | |
| 249 | } | |
| 250 | ||
| 251 | static int setup_crypt_desc(void) | |
| 252 | { | |
| 253 | BUILD_BUG_ON(sizeof(struct crypt_ctl) != 64); | |
| 254 | crypt_virt = dma_alloc_coherent(dev, | |
| 255 | NPE_QLEN * sizeof(struct crypt_ctl), | |
| e7a2577a | 256 | &crypt_phys, GFP_ATOMIC); |
| 81bef015 CH |
257 | if (!crypt_virt) |
| 258 | return -ENOMEM; | |
| 259 | memset(crypt_virt, 0, NPE_QLEN * sizeof(struct crypt_ctl)); | |
| 260 | return 0; | |
| 261 | } | |
| 262 | ||
| 263 | static spinlock_t desc_lock; | |
| 264 | static struct crypt_ctl *get_crypt_desc(void) | |
| 265 | { | |
| 266 | int i; | |
| 267 | static int idx = 0; | |
| 268 | unsigned long flags; | |
| 269 | ||
| 270 | spin_lock_irqsave(&desc_lock, flags); | |
| 271 | ||
| 272 | if (unlikely(!crypt_virt)) | |
| 273 | setup_crypt_desc(); | |
| 274 | if (unlikely(!crypt_virt)) { | |
| 275 | spin_unlock_irqrestore(&desc_lock, flags); | |
| 276 | return NULL; | |
| 277 | } | |
| 278 | i = idx; | |
| 279 | if (crypt_virt[i].ctl_flags == CTL_FLAG_UNUSED) { | |
| 280 | if (++idx >= NPE_QLEN) | |
| 281 | idx = 0; | |
| 282 | crypt_virt[i].ctl_flags = CTL_FLAG_USED; | |
| 283 | spin_unlock_irqrestore(&desc_lock, flags); | |
| 284 | return crypt_virt +i; | |
| 285 | } else { | |
| 286 | spin_unlock_irqrestore(&desc_lock, flags); | |
| 287 | return NULL; | |
| 288 | } | |
| 289 | } | |
| 290 | ||
| 291 | static spinlock_t emerg_lock; | |
| 292 | static struct crypt_ctl *get_crypt_desc_emerg(void) | |
| 293 | { | |
| 294 | int i; | |
| 295 | static int idx = NPE_QLEN; | |
| 296 | struct crypt_ctl *desc; | |
| 297 | unsigned long flags; | |
| 298 | ||
| 299 | desc = get_crypt_desc(); | |
| 300 | if (desc) | |
| 301 | return desc; | |
| 302 | if (unlikely(!crypt_virt)) | |
| 303 | return NULL; | |
| 304 | ||
| 305 | spin_lock_irqsave(&emerg_lock, flags); | |
| 306 | i = idx; | |
| 307 | if (crypt_virt[i].ctl_flags == CTL_FLAG_UNUSED) { | |
| 308 | if (++idx >= NPE_QLEN_TOTAL) | |
| 309 | idx = NPE_QLEN; | |
| 310 | crypt_virt[i].ctl_flags = CTL_FLAG_USED; | |
| 311 | spin_unlock_irqrestore(&emerg_lock, flags); | |
| 312 | return crypt_virt +i; | |
| 313 | } else { | |
| 314 | spin_unlock_irqrestore(&emerg_lock, flags); | |
| 315 | return NULL; | |
| 316 | } | |
| 317 | } | |
| 318 | ||
| 0d44dc59 | 319 | static void free_buf_chain(struct device *dev, struct buffer_desc *buf,u32 phys) |
| 81bef015 CH |
320 | { |
| 321 | while (buf) { | |
| 322 | struct buffer_desc *buf1; | |
| 323 | u32 phys1; | |
| 324 | ||
| 325 | buf1 = buf->next; | |
| 326 | phys1 = buf->phys_next; | |
| 0d44dc59 | 327 | dma_unmap_single(dev, buf->phys_next, buf->buf_len, buf->dir); |
| 81bef015 CH |
328 | dma_pool_free(buffer_pool, buf, phys); |
| 329 | buf = buf1; | |
| 330 | phys = phys1; | |
| 331 | } | |
| 332 | } | |
| 333 | ||
| 334 | static struct tasklet_struct crypto_done_tasklet; | |
| 335 | ||
| 336 | static void finish_scattered_hmac(struct crypt_ctl *crypt) | |
| 337 | { | |
| 338 | struct aead_request *req = crypt->data.aead_req; | |
| 339 | struct aead_ctx *req_ctx = aead_request_ctx(req); | |
| 340 | struct crypto_aead *tfm = crypto_aead_reqtfm(req); | |
| 341 | int authsize = crypto_aead_authsize(tfm); | |
| 342 | int decryptlen = req->cryptlen - authsize; | |
| 343 | ||
| 344 | if (req_ctx->encrypt) { | |
| 345 | scatterwalk_map_and_copy(req_ctx->hmac_virt, | |
| 346 | req->src, decryptlen, authsize, 1); | |
| 347 | } | |
| 348 | dma_pool_free(buffer_pool, req_ctx->hmac_virt, crypt->icv_rev_aes); | |
| 349 | } | |
| 350 | ||
| 351 | static void one_packet(dma_addr_t phys) | |
| 352 | { | |
| 353 | struct crypt_ctl *crypt; | |
| 354 | struct ixp_ctx *ctx; | |
| 355 | int failed; | |
| 81bef015 CH |
356 | |
| 357 | failed = phys & 0x1 ? -EBADMSG : 0; | |
| 358 | phys &= ~0x3; | |
| 359 | crypt = crypt_phys2virt(phys); | |
| 360 | ||
| 361 | switch (crypt->ctl_flags & CTL_FLAG_MASK) { | |
| 362 | case CTL_FLAG_PERFORM_AEAD: { | |
| 363 | struct aead_request *req = crypt->data.aead_req; | |
| 364 | struct aead_ctx *req_ctx = aead_request_ctx(req); | |
| 81bef015 | 365 | |
| 0d44dc59 | 366 | free_buf_chain(dev, req_ctx->buffer, crypt->src_buf); |
| 81bef015 CH |
367 | if (req_ctx->hmac_virt) { |
| 368 | finish_scattered_hmac(crypt); | |
| 369 | } | |
| 370 | req->base.complete(&req->base, failed); | |
| 371 | break; | |
| 372 | } | |
| 373 | case CTL_FLAG_PERFORM_ABLK: { | |
| 374 | struct ablkcipher_request *req = crypt->data.ablk_req; | |
| 375 | struct ablk_ctx *req_ctx = ablkcipher_request_ctx(req); | |
| 0d44dc59 | 376 | |
| 81bef015 | 377 | if (req_ctx->dst) { |
| 0d44dc59 | 378 | free_buf_chain(dev, req_ctx->dst, crypt->dst_buf); |
| 81bef015 | 379 | } |
| 0d44dc59 | 380 | free_buf_chain(dev, req_ctx->src, crypt->src_buf); |
| 81bef015 CH |
381 | req->base.complete(&req->base, failed); |
| 382 | break; | |
| 383 | } | |
| 384 | case CTL_FLAG_GEN_ICV: | |
| 385 | ctx = crypto_tfm_ctx(crypt->data.tfm); | |
| 386 | dma_pool_free(ctx_pool, crypt->regist_ptr, | |
| 387 | crypt->regist_buf->phys_addr); | |
| 388 | dma_pool_free(buffer_pool, crypt->regist_buf, crypt->src_buf); | |
| 389 | if (atomic_dec_and_test(&ctx->configuring)) | |
| 390 | complete(&ctx->completion); | |
| 391 | break; | |
| 392 | case CTL_FLAG_GEN_REVAES: | |
| 393 | ctx = crypto_tfm_ctx(crypt->data.tfm); | |
| 394 | *(u32*)ctx->decrypt.npe_ctx &= cpu_to_be32(~CIPH_ENCR); | |
| 395 | if (atomic_dec_and_test(&ctx->configuring)) | |
| 396 | complete(&ctx->completion); | |
| 397 | break; | |
| 398 | default: | |
| 399 | BUG(); | |
| 400 | } | |
| 401 | crypt->ctl_flags = CTL_FLAG_UNUSED; | |
| 402 | } | |
| 403 | ||
| 404 | static void irqhandler(void *_unused) | |
| 405 | { | |
| 406 | tasklet_schedule(&crypto_done_tasklet); | |
| 407 | } | |
| 408 | ||
| 409 | static void crypto_done_action(unsigned long arg) | |
| 410 | { | |
| 411 | int i; | |
| 412 | ||
| 413 | for(i=0; i<4; i++) { | |
| 414 | dma_addr_t phys = qmgr_get_entry(RECV_QID); | |
| 415 | if (!phys) | |
| 416 | return; | |
| 417 | one_packet(phys); | |
| 418 | } | |
| 419 | tasklet_schedule(&crypto_done_tasklet); | |
| 420 | } | |
| 421 | ||
| 422 | static int init_ixp_crypto(void) | |
| 423 | { | |
| 424 | int ret = -ENODEV; | |
| 295c01f9 | 425 | u32 msg[2] = { 0, 0 }; |
| 81bef015 CH |
426 | |
| 427 | if (! ( ~(*IXP4XX_EXP_CFG2) & (IXP4XX_FEATURE_HASH | | |
| 428 | IXP4XX_FEATURE_AES | IXP4XX_FEATURE_DES))) { | |
| 429 | printk(KERN_ERR "ixp_crypto: No HW crypto available\n"); | |
| 430 | return ret; | |
| 431 | } | |
| 432 | npe_c = npe_request(NPE_ID); | |
| 433 | if (!npe_c) | |
| 434 | return ret; | |
| 435 | ||
| 436 | if (!npe_running(npe_c)) { | |
| 295c01f9 CH |
437 | ret = npe_load_firmware(npe_c, npe_name(npe_c), dev); |
| 438 | if (ret) { | |
| 439 | return ret; | |
| 440 | } | |
| 441 | if (npe_recv_message(npe_c, msg, "STATUS_MSG")) | |
| 442 | goto npe_error; | |
| 443 | } else { | |
| 444 | if (npe_send_message(npe_c, msg, "STATUS_MSG")) | |
| 445 | goto npe_error; | |
| 446 | ||
| 447 | if (npe_recv_message(npe_c, msg, "STATUS_MSG")) | |
| 448 | goto npe_error; | |
| 81bef015 CH |
449 | } |
| 450 | ||
| 295c01f9 CH |
451 | switch ((msg[1]>>16) & 0xff) { |
| 452 | case 3: | |
| 453 | printk(KERN_WARNING "Firmware of %s lacks AES support\n", | |
| 454 | npe_name(npe_c)); | |
| 455 | support_aes = 0; | |
| 456 | break; | |
| 457 | case 4: | |
| 458 | case 5: | |
| 459 | support_aes = 1; | |
| 460 | break; | |
| 461 | default: | |
| 462 | printk(KERN_ERR "Firmware of %s lacks crypto support\n", | |
| 463 | npe_name(npe_c)); | |
| 464 | return -ENODEV; | |
| 465 | } | |
| 81bef015 CH |
466 | /* buffer_pool will also be used to sometimes store the hmac, |
| 467 | * so assure it is large enough | |
| 468 | */ | |
| 469 | BUILD_BUG_ON(SHA1_DIGEST_SIZE > sizeof(struct buffer_desc)); | |
| 470 | buffer_pool = dma_pool_create("buffer", dev, | |
| 471 | sizeof(struct buffer_desc), 32, 0); | |
| 472 | ret = -ENOMEM; | |
| 473 | if (!buffer_pool) { | |
| 474 | goto err; | |
| 475 | } | |
| 476 | ctx_pool = dma_pool_create("context", dev, | |
| 477 | NPE_CTX_LEN, 16, 0); | |
| 478 | if (!ctx_pool) { | |
| 479 | goto err; | |
| 480 | } | |
| 1777f1a9 KH |
481 | ret = qmgr_request_queue(SEND_QID, NPE_QLEN_TOTAL, 0, 0, |
| 482 | "ixp_crypto:out", NULL); | |
| 81bef015 CH |
483 | if (ret) |
| 484 | goto err; | |
| 1777f1a9 KH |
485 | ret = qmgr_request_queue(RECV_QID, NPE_QLEN, 0, 0, |
| 486 | "ixp_crypto:in", NULL); | |
| 81bef015 CH |
487 | if (ret) { |
| 488 | qmgr_release_queue(SEND_QID); | |
| 489 | goto err; | |
| 490 | } | |
| 491 | qmgr_set_irq(RECV_QID, QUEUE_IRQ_SRC_NOT_EMPTY, irqhandler, NULL); | |
| 492 | tasklet_init(&crypto_done_tasklet, crypto_done_action, 0); | |
| 493 | ||
| 494 | qmgr_enable_irq(RECV_QID); | |
| 495 | return 0; | |
| 295c01f9 CH |
496 | |
| 497 | npe_error: | |
| 498 | printk(KERN_ERR "%s not responding\n", npe_name(npe_c)); | |
| 499 | ret = -EIO; | |
| 81bef015 CH |
500 | err: |
| 501 | if (ctx_pool) | |
| 502 | dma_pool_destroy(ctx_pool); | |
| 503 | if (buffer_pool) | |
| 504 | dma_pool_destroy(buffer_pool); | |
| 505 | npe_release(npe_c); | |
| 506 | return ret; | |
| 507 | } | |
| 508 | ||
| 509 | static void release_ixp_crypto(void) | |
| 510 | { | |
| 511 | qmgr_disable_irq(RECV_QID); | |
| 512 | tasklet_kill(&crypto_done_tasklet); | |
| 513 | ||
| 514 | qmgr_release_queue(SEND_QID); | |
| 515 | qmgr_release_queue(RECV_QID); | |
| 516 | ||
| 517 | dma_pool_destroy(ctx_pool); | |
| 518 | dma_pool_destroy(buffer_pool); | |
| 519 | ||
| 520 | npe_release(npe_c); | |
| 521 | ||
| 522 | if (crypt_virt) { | |
| 523 | dma_free_coherent(dev, | |
| 524 | NPE_QLEN_TOTAL * sizeof( struct crypt_ctl), | |
| 525 | crypt_virt, crypt_phys); | |
| 526 | } | |
| 527 | return; | |
| 528 | } | |
| 529 | ||
| 530 | static void reset_sa_dir(struct ix_sa_dir *dir) | |
| 531 | { | |
| 532 | memset(dir->npe_ctx, 0, NPE_CTX_LEN); | |
| 533 | dir->npe_ctx_idx = 0; | |
| 534 | dir->npe_mode = 0; | |
| 535 | } | |
| 536 | ||
| 537 | static int init_sa_dir(struct ix_sa_dir *dir) | |
| 538 | { | |
| 539 | dir->npe_ctx = dma_pool_alloc(ctx_pool, GFP_KERNEL, &dir->npe_ctx_phys); | |
| 540 | if (!dir->npe_ctx) { | |
| 541 | return -ENOMEM; | |
| 542 | } | |
| 543 | reset_sa_dir(dir); | |
| 544 | return 0; | |
| 545 | } | |
| 546 | ||
| 547 | static void free_sa_dir(struct ix_sa_dir *dir) | |
| 548 | { | |
| 549 | memset(dir->npe_ctx, 0, NPE_CTX_LEN); | |
| 550 | dma_pool_free(ctx_pool, dir->npe_ctx, dir->npe_ctx_phys); | |
| 551 | } | |
| 552 | ||
| 553 | static int init_tfm(struct crypto_tfm *tfm) | |
| 554 | { | |
| 555 | struct ixp_ctx *ctx = crypto_tfm_ctx(tfm); | |
| 556 | int ret; | |
| 557 | ||
| 558 | atomic_set(&ctx->configuring, 0); | |
| 559 | ret = init_sa_dir(&ctx->encrypt); | |
| 560 | if (ret) | |
| 561 | return ret; | |
| 562 | ret = init_sa_dir(&ctx->decrypt); | |
| 563 | if (ret) { | |
| 564 | free_sa_dir(&ctx->encrypt); | |
| 565 | } | |
| 566 | return ret; | |
| 567 | } | |
| 568 | ||
| 569 | static int init_tfm_ablk(struct crypto_tfm *tfm) | |
| 570 | { | |
| 571 | tfm->crt_ablkcipher.reqsize = sizeof(struct ablk_ctx); | |
| 572 | return init_tfm(tfm); | |
| 573 | } | |
| 574 | ||
| 575 | static int init_tfm_aead(struct crypto_tfm *tfm) | |
| 576 | { | |
| 577 | tfm->crt_aead.reqsize = sizeof(struct aead_ctx); | |
| 578 | return init_tfm(tfm); | |
| 579 | } | |
| 580 | ||
| 581 | static void exit_tfm(struct crypto_tfm *tfm) | |
| 582 | { | |
| 583 | struct ixp_ctx *ctx = crypto_tfm_ctx(tfm); | |
| 584 | free_sa_dir(&ctx->encrypt); | |
| 585 | free_sa_dir(&ctx->decrypt); | |
| 586 | } | |
| 587 | ||
| 588 | static int register_chain_var(struct crypto_tfm *tfm, u8 xpad, u32 target, | |
| 589 | int init_len, u32 ctx_addr, const u8 *key, int key_len) | |
| 590 | { | |
| 591 | struct ixp_ctx *ctx = crypto_tfm_ctx(tfm); | |
| 592 | struct crypt_ctl *crypt; | |
| 593 | struct buffer_desc *buf; | |
| 594 | int i; | |
| 595 | u8 *pad; | |
| 596 | u32 pad_phys, buf_phys; | |
| 597 | ||
| 598 | BUILD_BUG_ON(NPE_CTX_LEN < HMAC_PAD_BLOCKLEN); | |
| 599 | pad = dma_pool_alloc(ctx_pool, GFP_KERNEL, &pad_phys); | |
| 600 | if (!pad) | |
| 601 | return -ENOMEM; | |
| 602 | buf = dma_pool_alloc(buffer_pool, GFP_KERNEL, &buf_phys); | |
| 603 | if (!buf) { | |
| 604 | dma_pool_free(ctx_pool, pad, pad_phys); | |
| 605 | return -ENOMEM; | |
| 606 | } | |
| 607 | crypt = get_crypt_desc_emerg(); | |
| 608 | if (!crypt) { | |
| 609 | dma_pool_free(ctx_pool, pad, pad_phys); | |
| 610 | dma_pool_free(buffer_pool, buf, buf_phys); | |
| 611 | return -EAGAIN; | |
| 612 | } | |
| 613 | ||
| 614 | memcpy(pad, key, key_len); | |
| 615 | memset(pad + key_len, 0, HMAC_PAD_BLOCKLEN - key_len); | |
| 616 | for (i = 0; i < HMAC_PAD_BLOCKLEN; i++) { | |
| 617 | pad[i] ^= xpad; | |
| 618 | } | |
| 619 | ||
| 620 | crypt->data.tfm = tfm; | |
| 621 | crypt->regist_ptr = pad; | |
| 622 | crypt->regist_buf = buf; | |
| 623 | ||
| 624 | crypt->auth_offs = 0; | |
| 625 | crypt->auth_len = HMAC_PAD_BLOCKLEN; | |
| 626 | crypt->crypto_ctx = ctx_addr; | |
| 627 | crypt->src_buf = buf_phys; | |
| 628 | crypt->icv_rev_aes = target; | |
| 629 | crypt->mode = NPE_OP_HASH_GEN_ICV; | |
| 630 | crypt->init_len = init_len; | |
| 631 | crypt->ctl_flags |= CTL_FLAG_GEN_ICV; | |
| 632 | ||
| 633 | buf->next = 0; | |
| 634 | buf->buf_len = HMAC_PAD_BLOCKLEN; | |
| 635 | buf->pkt_len = 0; | |
| 636 | buf->phys_addr = pad_phys; | |
| 637 | ||
| 638 | atomic_inc(&ctx->configuring); | |
| 639 | qmgr_put_entry(SEND_QID, crypt_virt2phys(crypt)); | |
| 640 | BUG_ON(qmgr_stat_overflow(SEND_QID)); | |
| 641 | return 0; | |
| 642 | } | |
| 643 | ||
| 644 | static int setup_auth(struct crypto_tfm *tfm, int encrypt, unsigned authsize, | |
| 645 | const u8 *key, int key_len, unsigned digest_len) | |
| 646 | { | |
| 647 | u32 itarget, otarget, npe_ctx_addr; | |
| 648 | unsigned char *cinfo; | |
| 649 | int init_len, ret = 0; | |
| 650 | u32 cfgword; | |
| 651 | struct ix_sa_dir *dir; | |
| 652 | struct ixp_ctx *ctx = crypto_tfm_ctx(tfm); | |
| 653 | const struct ix_hash_algo *algo; | |
| 654 | ||
| 655 | dir = encrypt ? &ctx->encrypt : &ctx->decrypt; | |
| 656 | cinfo = dir->npe_ctx + dir->npe_ctx_idx; | |
| 657 | algo = ix_hash(tfm); | |
| 658 | ||
| 659 | /* write cfg word to cryptinfo */ | |
| 660 | cfgword = algo->cfgword | ( authsize << 6); /* (authsize/4) << 8 */ | |
| ce057297 KH |
661 | #ifndef __ARMEB__ |
| 662 | cfgword ^= 0xAA000000; /* change the "byte swap" flags */ | |
| 663 | #endif | |
| 81bef015 CH |
664 | *(u32*)cinfo = cpu_to_be32(cfgword); |
| 665 | cinfo += sizeof(cfgword); | |
| 666 | ||
| 667 | /* write ICV to cryptinfo */ | |
| 668 | memcpy(cinfo, algo->icv, digest_len); | |
| 669 | cinfo += digest_len; | |
| 670 | ||
| 671 | itarget = dir->npe_ctx_phys + dir->npe_ctx_idx | |
| 672 | + sizeof(algo->cfgword); | |
| 673 | otarget = itarget + digest_len; | |
| 674 | init_len = cinfo - (dir->npe_ctx + dir->npe_ctx_idx); | |
| 675 | npe_ctx_addr = dir->npe_ctx_phys + dir->npe_ctx_idx; | |
| 676 | ||
| 677 | dir->npe_ctx_idx += init_len; | |
| 678 | dir->npe_mode |= NPE_OP_HASH_ENABLE; | |
| 679 | ||
| 680 | if (!encrypt) | |
| 681 | dir->npe_mode |= NPE_OP_HASH_VERIFY; | |
| 682 | ||
| 683 | ret = register_chain_var(tfm, HMAC_OPAD_VALUE, otarget, | |
| 684 | init_len, npe_ctx_addr, key, key_len); | |
| 685 | if (ret) | |
| 686 | return ret; | |
| 687 | return register_chain_var(tfm, HMAC_IPAD_VALUE, itarget, | |
| 688 | init_len, npe_ctx_addr, key, key_len); | |
| 689 | } | |
| 690 | ||
| 691 | static int gen_rev_aes_key(struct crypto_tfm *tfm) | |
| 692 | { | |
| 693 | struct crypt_ctl *crypt; | |
| 694 | struct ixp_ctx *ctx = crypto_tfm_ctx(tfm); | |
| 695 | struct ix_sa_dir *dir = &ctx->decrypt; | |
| 696 | ||
| 697 | crypt = get_crypt_desc_emerg(); | |
| 698 | if (!crypt) { | |
| 699 | return -EAGAIN; | |
| 700 | } | |
| 701 | *(u32*)dir->npe_ctx |= cpu_to_be32(CIPH_ENCR); | |
| 702 | ||
| 703 | crypt->data.tfm = tfm; | |
| 704 | crypt->crypt_offs = 0; | |
| 705 | crypt->crypt_len = AES_BLOCK128; | |
| 706 | crypt->src_buf = 0; | |
| 707 | crypt->crypto_ctx = dir->npe_ctx_phys; | |
| 708 | crypt->icv_rev_aes = dir->npe_ctx_phys + sizeof(u32); | |
| 709 | crypt->mode = NPE_OP_ENC_GEN_KEY; | |
| 710 | crypt->init_len = dir->npe_ctx_idx; | |
| 711 | crypt->ctl_flags |= CTL_FLAG_GEN_REVAES; | |
| 712 | ||
| 713 | atomic_inc(&ctx->configuring); | |
| 714 | qmgr_put_entry(SEND_QID, crypt_virt2phys(crypt)); | |
| 715 | BUG_ON(qmgr_stat_overflow(SEND_QID)); | |
| 716 | return 0; | |
| 717 | } | |
| 718 | ||
| 719 | static int setup_cipher(struct crypto_tfm *tfm, int encrypt, | |
| 720 | const u8 *key, int key_len) | |
| 721 | { | |
| 722 | u8 *cinfo; | |
| 723 | u32 cipher_cfg; | |
| 724 | u32 keylen_cfg = 0; | |
| 725 | struct ix_sa_dir *dir; | |
| 726 | struct ixp_ctx *ctx = crypto_tfm_ctx(tfm); | |
| 727 | u32 *flags = &tfm->crt_flags; | |
| 728 | ||
| 729 | dir = encrypt ? &ctx->encrypt : &ctx->decrypt; | |
| 730 | cinfo = dir->npe_ctx; | |
| 731 | ||
| 732 | if (encrypt) { | |
| 733 | cipher_cfg = cipher_cfg_enc(tfm); | |
| 734 | dir->npe_mode |= NPE_OP_CRYPT_ENCRYPT; | |
| 735 | } else { | |
| 736 | cipher_cfg = cipher_cfg_dec(tfm); | |
| 737 | } | |
| 738 | if (cipher_cfg & MOD_AES) { | |
| 739 | switch (key_len) { | |
| 9792eb1d KH |
740 | case 16: keylen_cfg = MOD_AES128; break; |
| 741 | case 24: keylen_cfg = MOD_AES192; break; | |
| 742 | case 32: keylen_cfg = MOD_AES256; break; | |
| 743 | default: | |
| 744 | *flags |= CRYPTO_TFM_RES_BAD_KEY_LEN; | |
| 745 | return -EINVAL; | |
| 81bef015 CH |
746 | } |
| 747 | cipher_cfg |= keylen_cfg; | |
| 748 | } else if (cipher_cfg & MOD_3DES) { | |
| 749 | const u32 *K = (const u32 *)key; | |
| 750 | if (unlikely(!((K[0] ^ K[2]) | (K[1] ^ K[3])) || | |
| 751 | !((K[2] ^ K[4]) | (K[3] ^ K[5])))) | |
| 752 | { | |
| 753 | *flags |= CRYPTO_TFM_RES_BAD_KEY_SCHED; | |
| 754 | return -EINVAL; | |
| 755 | } | |
| 756 | } else { | |
| 757 | u32 tmp[DES_EXPKEY_WORDS]; | |
| 758 | if (des_ekey(tmp, key) == 0) { | |
| 759 | *flags |= CRYPTO_TFM_RES_WEAK_KEY; | |
| 760 | } | |
| 761 | } | |
| 762 | /* write cfg word to cryptinfo */ | |
| 763 | *(u32*)cinfo = cpu_to_be32(cipher_cfg); | |
| 764 | cinfo += sizeof(cipher_cfg); | |
| 765 | ||
| 766 | /* write cipher key to cryptinfo */ | |
| 767 | memcpy(cinfo, key, key_len); | |
| 768 | /* NPE wants keylen set to DES3_EDE_KEY_SIZE even for single DES */ | |
| 769 | if (key_len < DES3_EDE_KEY_SIZE && !(cipher_cfg & MOD_AES)) { | |
| 770 | memset(cinfo + key_len, 0, DES3_EDE_KEY_SIZE -key_len); | |
| 771 | key_len = DES3_EDE_KEY_SIZE; | |
| 772 | } | |
| 773 | dir->npe_ctx_idx = sizeof(cipher_cfg) + key_len; | |
| 774 | dir->npe_mode |= NPE_OP_CRYPT_ENABLE; | |
| 775 | if ((cipher_cfg & MOD_AES) && !encrypt) { | |
| 776 | return gen_rev_aes_key(tfm); | |
| 777 | } | |
| 778 | return 0; | |
| 779 | } | |
| 780 | ||
| 0d44dc59 CH |
781 | static struct buffer_desc *chainup_buffers(struct device *dev, |
| 782 | struct scatterlist *sg, unsigned nbytes, | |
| 783 | struct buffer_desc *buf, gfp_t flags, | |
| 784 | enum dma_data_direction dir) | |
| 81bef015 | 785 | { |
| 0d44dc59 CH |
786 | for (;nbytes > 0; sg = scatterwalk_sg_next(sg)) { |
| 787 | unsigned len = min(nbytes, sg->length); | |
| 81bef015 CH |
788 | struct buffer_desc *next_buf; |
| 789 | u32 next_buf_phys; | |
| 0d44dc59 | 790 | void *ptr; |
| 81bef015 | 791 | |
| 81bef015 | 792 | nbytes -= len; |
| 0d44dc59 | 793 | ptr = page_address(sg_page(sg)) + sg->offset; |
| 81bef015 | 794 | next_buf = dma_pool_alloc(buffer_pool, flags, &next_buf_phys); |
| 0d44dc59 CH |
795 | if (!next_buf) { |
| 796 | buf = NULL; | |
| 797 | break; | |
| 798 | } | |
| 799 | sg_dma_address(sg) = dma_map_single(dev, ptr, len, dir); | |
| 81bef015 CH |
800 | buf->next = next_buf; |
| 801 | buf->phys_next = next_buf_phys; | |
| 81bef015 | 802 | buf = next_buf; |
| 0d44dc59 | 803 | |
| 81bef015 CH |
804 | buf->phys_addr = sg_dma_address(sg); |
| 805 | buf->buf_len = len; | |
| 0d44dc59 | 806 | buf->dir = dir; |
| 81bef015 | 807 | } |
| 0d44dc59 CH |
808 | buf->next = NULL; |
| 809 | buf->phys_next = 0; | |
| 81bef015 CH |
810 | return buf; |
| 811 | } | |
| 812 | ||
| 813 | static int ablk_setkey(struct crypto_ablkcipher *tfm, const u8 *key, | |
| 814 | unsigned int key_len) | |
| 815 | { | |
| 816 | struct ixp_ctx *ctx = crypto_ablkcipher_ctx(tfm); | |
| 817 | u32 *flags = &tfm->base.crt_flags; | |
| 818 | int ret; | |
| 819 | ||
| 820 | init_completion(&ctx->completion); | |
| 821 | atomic_inc(&ctx->configuring); | |
| 822 | ||
| 823 | reset_sa_dir(&ctx->encrypt); | |
| 824 | reset_sa_dir(&ctx->decrypt); | |
| 825 | ||
| 826 | ctx->encrypt.npe_mode = NPE_OP_HMAC_DISABLE; | |
| 827 | ctx->decrypt.npe_mode = NPE_OP_HMAC_DISABLE; | |
| 828 | ||
| 829 | ret = setup_cipher(&tfm->base, 0, key, key_len); | |
| 830 | if (ret) | |
| 831 | goto out; | |
| 832 | ret = setup_cipher(&tfm->base, 1, key, key_len); | |
| 833 | if (ret) | |
| 834 | goto out; | |
| 835 | ||
| 836 | if (*flags & CRYPTO_TFM_RES_WEAK_KEY) { | |
| 837 | if (*flags & CRYPTO_TFM_REQ_WEAK_KEY) { | |
| 838 | ret = -EINVAL; | |
| 839 | } else { | |
| 840 | *flags &= ~CRYPTO_TFM_RES_WEAK_KEY; | |
| 841 | } | |
| 842 | } | |
| 843 | out: | |
| 844 | if (!atomic_dec_and_test(&ctx->configuring)) | |
| 845 | wait_for_completion(&ctx->completion); | |
| 846 | return ret; | |
| 847 | } | |
| 848 | ||
| 849 | static int ablk_rfc3686_setkey(struct crypto_ablkcipher *tfm, const u8 *key, | |
| 850 | unsigned int key_len) | |
| 851 | { | |
| 852 | struct ixp_ctx *ctx = crypto_ablkcipher_ctx(tfm); | |
| 853 | ||
| 854 | /* the nonce is stored in bytes at end of key */ | |
| 855 | if (key_len < CTR_RFC3686_NONCE_SIZE) | |
| 856 | return -EINVAL; | |
| 857 | ||
| 858 | memcpy(ctx->nonce, key + (key_len - CTR_RFC3686_NONCE_SIZE), | |
| 859 | CTR_RFC3686_NONCE_SIZE); | |
| 860 | ||
| 861 | key_len -= CTR_RFC3686_NONCE_SIZE; | |
| 862 | return ablk_setkey(tfm, key, key_len); | |
| 863 | } | |
| 864 | ||
| 865 | static int ablk_perform(struct ablkcipher_request *req, int encrypt) | |
| 866 | { | |
| 867 | struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req); | |
| 868 | struct ixp_ctx *ctx = crypto_ablkcipher_ctx(tfm); | |
| 869 | unsigned ivsize = crypto_ablkcipher_ivsize(tfm); | |
| 81bef015 CH |
870 | struct ix_sa_dir *dir; |
| 871 | struct crypt_ctl *crypt; | |
| 0d44dc59 | 872 | unsigned int nbytes = req->nbytes; |
| 81bef015 CH |
873 | enum dma_data_direction src_direction = DMA_BIDIRECTIONAL; |
| 874 | struct ablk_ctx *req_ctx = ablkcipher_request_ctx(req); | |
| 0d44dc59 | 875 | struct buffer_desc src_hook; |
| 81bef015 CH |
876 | gfp_t flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ? |
| 877 | GFP_KERNEL : GFP_ATOMIC; | |
| 878 | ||
| 879 | if (qmgr_stat_full(SEND_QID)) | |
| 880 | return -EAGAIN; | |
| 881 | if (atomic_read(&ctx->configuring)) | |
| 882 | return -EAGAIN; | |
| 883 | ||
| 884 | dir = encrypt ? &ctx->encrypt : &ctx->decrypt; | |
| 885 | ||
| 886 | crypt = get_crypt_desc(); | |
| 887 | if (!crypt) | |
| 0d44dc59 | 888 | return -ENOMEM; |
| 81bef015 CH |
889 | |
| 890 | crypt->data.ablk_req = req; | |
| 891 | crypt->crypto_ctx = dir->npe_ctx_phys; | |
| 892 | crypt->mode = dir->npe_mode; | |
| 893 | crypt->init_len = dir->npe_ctx_idx; | |
| 894 | ||
| 895 | crypt->crypt_offs = 0; | |
| 896 | crypt->crypt_len = nbytes; | |
| 897 | ||
| 898 | BUG_ON(ivsize && !req->info); | |
| 899 | memcpy(crypt->iv, req->info, ivsize); | |
| 900 | if (req->src != req->dst) { | |
| 0d44dc59 | 901 | struct buffer_desc dst_hook; |
| 81bef015 | 902 | crypt->mode |= NPE_OP_NOT_IN_PLACE; |
| 81bef015 CH |
903 | /* This was never tested by Intel |
| 904 | * for more than one dst buffer, I think. */ | |
| 0d44dc59 CH |
905 | BUG_ON(req->dst->length < nbytes); |
| 906 | req_ctx->dst = NULL; | |
| 907 | if (!chainup_buffers(dev, req->dst, nbytes, &dst_hook, | |
| 908 | flags, DMA_FROM_DEVICE)) | |
| 81bef015 CH |
909 | goto free_buf_dest; |
| 910 | src_direction = DMA_TO_DEVICE; | |
| 0d44dc59 CH |
911 | req_ctx->dst = dst_hook.next; |
| 912 | crypt->dst_buf = dst_hook.phys_next; | |
| 81bef015 CH |
913 | } else { |
| 914 | req_ctx->dst = NULL; | |
| 81bef015 | 915 | } |
| 0d44dc59 CH |
916 | req_ctx->src = NULL; |
| 917 | if (!chainup_buffers(dev, req->src, nbytes, &src_hook, | |
| 918 | flags, src_direction)) | |
| 81bef015 CH |
919 | goto free_buf_src; |
| 920 | ||
| 0d44dc59 CH |
921 | req_ctx->src = src_hook.next; |
| 922 | crypt->src_buf = src_hook.phys_next; | |
| 81bef015 CH |
923 | crypt->ctl_flags |= CTL_FLAG_PERFORM_ABLK; |
| 924 | qmgr_put_entry(SEND_QID, crypt_virt2phys(crypt)); | |
| 925 | BUG_ON(qmgr_stat_overflow(SEND_QID)); | |
| 926 | return -EINPROGRESS; | |
| 927 | ||
| 928 | free_buf_src: | |
| 0d44dc59 | 929 | free_buf_chain(dev, req_ctx->src, crypt->src_buf); |
| 81bef015 CH |
930 | free_buf_dest: |
| 931 | if (req->src != req->dst) { | |
| 0d44dc59 | 932 | free_buf_chain(dev, req_ctx->dst, crypt->dst_buf); |
| 81bef015 CH |
933 | } |
| 934 | crypt->ctl_flags = CTL_FLAG_UNUSED; | |
| 0d44dc59 | 935 | return -ENOMEM; |
| 81bef015 CH |
936 | } |
| 937 | ||
| 938 | static int ablk_encrypt(struct ablkcipher_request *req) | |
| 939 | { | |
| 940 | return ablk_perform(req, 1); | |
| 941 | } | |
| 942 | ||
| 943 | static int ablk_decrypt(struct ablkcipher_request *req) | |
| 944 | { | |
| 945 | return ablk_perform(req, 0); | |
| 946 | } | |
| 947 | ||
| 948 | static int ablk_rfc3686_crypt(struct ablkcipher_request *req) | |
| 949 | { | |
| 950 | struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req); | |
| 951 | struct ixp_ctx *ctx = crypto_ablkcipher_ctx(tfm); | |
| 952 | u8 iv[CTR_RFC3686_BLOCK_SIZE]; | |
| 953 | u8 *info = req->info; | |
| 954 | int ret; | |
| 955 | ||
| 956 | /* set up counter block */ | |
| 957 | memcpy(iv, ctx->nonce, CTR_RFC3686_NONCE_SIZE); | |
| 958 | memcpy(iv + CTR_RFC3686_NONCE_SIZE, info, CTR_RFC3686_IV_SIZE); | |
| 959 | ||
| 960 | /* initialize counter portion of counter block */ | |
| 961 | *(__be32 *)(iv + CTR_RFC3686_NONCE_SIZE + CTR_RFC3686_IV_SIZE) = | |
| 962 | cpu_to_be32(1); | |
| 963 | ||
| 964 | req->info = iv; | |
| 965 | ret = ablk_perform(req, 1); | |
| 966 | req->info = info; | |
| 967 | return ret; | |
| 968 | } | |
| 969 | ||
| 970 | static int hmac_inconsistent(struct scatterlist *sg, unsigned start, | |
| 971 | unsigned int nbytes) | |
| 972 | { | |
| 973 | int offset = 0; | |
| 974 | ||
| 975 | if (!nbytes) | |
| 976 | return 0; | |
| 977 | ||
| 978 | for (;;) { | |
| 979 | if (start < offset + sg->length) | |
| 980 | break; | |
| 981 | ||
| 982 | offset += sg->length; | |
| 0d44dc59 | 983 | sg = scatterwalk_sg_next(sg); |
| 81bef015 CH |
984 | } |
| 985 | return (start + nbytes > offset + sg->length); | |
| 986 | } | |
| 987 | ||
| 988 | static int aead_perform(struct aead_request *req, int encrypt, | |
| 989 | int cryptoffset, int eff_cryptlen, u8 *iv) | |
| 990 | { | |
| 991 | struct crypto_aead *tfm = crypto_aead_reqtfm(req); | |
| 992 | struct ixp_ctx *ctx = crypto_aead_ctx(tfm); | |
| 993 | unsigned ivsize = crypto_aead_ivsize(tfm); | |
| 994 | unsigned authsize = crypto_aead_authsize(tfm); | |
| 81bef015 CH |
995 | struct ix_sa_dir *dir; |
| 996 | struct crypt_ctl *crypt; | |
| 0d44dc59 CH |
997 | unsigned int cryptlen; |
| 998 | struct buffer_desc *buf, src_hook; | |
| 81bef015 CH |
999 | struct aead_ctx *req_ctx = aead_request_ctx(req); |
| 1000 | gfp_t flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ? | |
| 1001 | GFP_KERNEL : GFP_ATOMIC; | |
| 1002 | ||
| 1003 | if (qmgr_stat_full(SEND_QID)) | |
| 1004 | return -EAGAIN; | |
| 1005 | if (atomic_read(&ctx->configuring)) | |
| 1006 | return -EAGAIN; | |
| 1007 | ||
| 1008 | if (encrypt) { | |
| 1009 | dir = &ctx->encrypt; | |
| 1010 | cryptlen = req->cryptlen; | |
| 1011 | } else { | |
| 1012 | dir = &ctx->decrypt; | |
| 1013 | /* req->cryptlen includes the authsize when decrypting */ | |
| 1014 | cryptlen = req->cryptlen -authsize; | |
| 1015 | eff_cryptlen -= authsize; | |
| 1016 | } | |
| 1017 | crypt = get_crypt_desc(); | |
| 1018 | if (!crypt) | |
| 0d44dc59 | 1019 | return -ENOMEM; |
| 81bef015 CH |
1020 | |
| 1021 | crypt->data.aead_req = req; | |
| 1022 | crypt->crypto_ctx = dir->npe_ctx_phys; | |
| 1023 | crypt->mode = dir->npe_mode; | |
| 1024 | crypt->init_len = dir->npe_ctx_idx; | |
| 1025 | ||
| 1026 | crypt->crypt_offs = cryptoffset; | |
| 1027 | crypt->crypt_len = eff_cryptlen; | |
| 1028 | ||
| 1029 | crypt->auth_offs = 0; | |
| 1030 | crypt->auth_len = req->assoclen + ivsize + cryptlen; | |
| 1031 | BUG_ON(ivsize && !req->iv); | |
| 1032 | memcpy(crypt->iv, req->iv, ivsize); | |
| 1033 | ||
| 1034 | if (req->src != req->dst) { | |
| 25985edc | 1035 | BUG(); /* -ENOTSUP because of my laziness */ |
| 81bef015 CH |
1036 | } |
| 1037 | ||
| 81bef015 | 1038 | /* ASSOC data */ |
| 0d44dc59 CH |
1039 | buf = chainup_buffers(dev, req->assoc, req->assoclen, &src_hook, |
| 1040 | flags, DMA_TO_DEVICE); | |
| 1041 | req_ctx->buffer = src_hook.next; | |
| 1042 | crypt->src_buf = src_hook.phys_next; | |
| 81bef015 | 1043 | if (!buf) |
| 0d44dc59 | 1044 | goto out; |
| 81bef015 CH |
1045 | /* IV */ |
| 1046 | sg_init_table(&req_ctx->ivlist, 1); | |
| 1047 | sg_set_buf(&req_ctx->ivlist, iv, ivsize); | |
| 0d44dc59 CH |
1048 | buf = chainup_buffers(dev, &req_ctx->ivlist, ivsize, buf, flags, |
| 1049 | DMA_BIDIRECTIONAL); | |
| 81bef015 | 1050 | if (!buf) |
| 0d44dc59 | 1051 | goto free_chain; |
| 81bef015 CH |
1052 | if (unlikely(hmac_inconsistent(req->src, cryptlen, authsize))) { |
| 1053 | /* The 12 hmac bytes are scattered, | |
| 1054 | * we need to copy them into a safe buffer */ | |
| 1055 | req_ctx->hmac_virt = dma_pool_alloc(buffer_pool, flags, | |
| 1056 | &crypt->icv_rev_aes); | |
| 1057 | if (unlikely(!req_ctx->hmac_virt)) | |
| 0d44dc59 | 1058 | goto free_chain; |
| 81bef015 CH |
1059 | if (!encrypt) { |
| 1060 | scatterwalk_map_and_copy(req_ctx->hmac_virt, | |
| 1061 | req->src, cryptlen, authsize, 0); | |
| 1062 | } | |
| 1063 | req_ctx->encrypt = encrypt; | |
| 1064 | } else { | |
| 1065 | req_ctx->hmac_virt = NULL; | |
| 1066 | } | |
| 1067 | /* Crypt */ | |
| 0d44dc59 CH |
1068 | buf = chainup_buffers(dev, req->src, cryptlen + authsize, buf, flags, |
| 1069 | DMA_BIDIRECTIONAL); | |
| 81bef015 | 1070 | if (!buf) |
| 0d44dc59 | 1071 | goto free_hmac_virt; |
| 81bef015 CH |
1072 | if (!req_ctx->hmac_virt) { |
| 1073 | crypt->icv_rev_aes = buf->phys_addr + buf->buf_len - authsize; | |
| 1074 | } | |
| 0d44dc59 | 1075 | |
| 81bef015 CH |
1076 | crypt->ctl_flags |= CTL_FLAG_PERFORM_AEAD; |
| 1077 | qmgr_put_entry(SEND_QID, crypt_virt2phys(crypt)); | |
| 1078 | BUG_ON(qmgr_stat_overflow(SEND_QID)); | |
| 1079 | return -EINPROGRESS; | |
| 0d44dc59 | 1080 | free_hmac_virt: |
| 81bef015 CH |
1081 | if (req_ctx->hmac_virt) { |
| 1082 | dma_pool_free(buffer_pool, req_ctx->hmac_virt, | |
| 1083 | crypt->icv_rev_aes); | |
| 1084 | } | |
| 0d44dc59 CH |
1085 | free_chain: |
| 1086 | free_buf_chain(dev, req_ctx->buffer, crypt->src_buf); | |
| 81bef015 CH |
1087 | out: |
| 1088 | crypt->ctl_flags = CTL_FLAG_UNUSED; | |
| 0d44dc59 | 1089 | return -ENOMEM; |
| 81bef015 CH |
1090 | } |
| 1091 | ||
| 1092 | static int aead_setup(struct crypto_aead *tfm, unsigned int authsize) | |
| 1093 | { | |
| 1094 | struct ixp_ctx *ctx = crypto_aead_ctx(tfm); | |
| 1095 | u32 *flags = &tfm->base.crt_flags; | |
| 1096 | unsigned digest_len = crypto_aead_alg(tfm)->maxauthsize; | |
| 1097 | int ret; | |
| 1098 | ||
| 1099 | if (!ctx->enckey_len && !ctx->authkey_len) | |
| 1100 | return 0; | |
| 1101 | init_completion(&ctx->completion); | |
| 1102 | atomic_inc(&ctx->configuring); | |
| 1103 | ||
| 1104 | reset_sa_dir(&ctx->encrypt); | |
| 1105 | reset_sa_dir(&ctx->decrypt); | |
| 1106 | ||
| 1107 | ret = setup_cipher(&tfm->base, 0, ctx->enckey, ctx->enckey_len); | |
| 1108 | if (ret) | |
| 1109 | goto out; | |
| 1110 | ret = setup_cipher(&tfm->base, 1, ctx->enckey, ctx->enckey_len); | |
| 1111 | if (ret) | |
| 1112 | goto out; | |
| 1113 | ret = setup_auth(&tfm->base, 0, authsize, ctx->authkey, | |
| 1114 | ctx->authkey_len, digest_len); | |
| 1115 | if (ret) | |
| 1116 | goto out; | |
| 1117 | ret = setup_auth(&tfm->base, 1, authsize, ctx->authkey, | |
| 1118 | ctx->authkey_len, digest_len); | |
| 1119 | if (ret) | |
| 1120 | goto out; | |
| 1121 | ||
| 1122 | if (*flags & CRYPTO_TFM_RES_WEAK_KEY) { | |
| 1123 | if (*flags & CRYPTO_TFM_REQ_WEAK_KEY) { | |
| 1124 | ret = -EINVAL; | |
| 1125 | goto out; | |
| 1126 | } else { | |
| 1127 | *flags &= ~CRYPTO_TFM_RES_WEAK_KEY; | |
| 1128 | } | |
| 1129 | } | |
| 1130 | out: | |
| 1131 | if (!atomic_dec_and_test(&ctx->configuring)) | |
| 1132 | wait_for_completion(&ctx->completion); | |
| 1133 | return ret; | |
| 1134 | } | |
| 1135 | ||
| 1136 | static int aead_setauthsize(struct crypto_aead *tfm, unsigned int authsize) | |
| 1137 | { | |
| 1138 | int max = crypto_aead_alg(tfm)->maxauthsize >> 2; | |
| 1139 | ||
| 1140 | if ((authsize>>2) < 1 || (authsize>>2) > max || (authsize & 3)) | |
| 1141 | return -EINVAL; | |
| 1142 | return aead_setup(tfm, authsize); | |
| 1143 | } | |
| 1144 | ||
| 1145 | static int aead_setkey(struct crypto_aead *tfm, const u8 *key, | |
| 1146 | unsigned int keylen) | |
| 1147 | { | |
| 1148 | struct ixp_ctx *ctx = crypto_aead_ctx(tfm); | |
| 1149 | struct rtattr *rta = (struct rtattr *)key; | |
| 1150 | struct crypto_authenc_key_param *param; | |
| 1151 | ||
| 1152 | if (!RTA_OK(rta, keylen)) | |
| 1153 | goto badkey; | |
| 1154 | if (rta->rta_type != CRYPTO_AUTHENC_KEYA_PARAM) | |
| 1155 | goto badkey; | |
| 1156 | if (RTA_PAYLOAD(rta) < sizeof(*param)) | |
| 1157 | goto badkey; | |
| 1158 | ||
| 1159 | param = RTA_DATA(rta); | |
| 1160 | ctx->enckey_len = be32_to_cpu(param->enckeylen); | |
| 1161 | ||
| 1162 | key += RTA_ALIGN(rta->rta_len); | |
| 1163 | keylen -= RTA_ALIGN(rta->rta_len); | |
| 1164 | ||
| 1165 | if (keylen < ctx->enckey_len) | |
| 1166 | goto badkey; | |
| 1167 | ||
| 1168 | ctx->authkey_len = keylen - ctx->enckey_len; | |
| 1169 | memcpy(ctx->enckey, key + ctx->authkey_len, ctx->enckey_len); | |
| 1170 | memcpy(ctx->authkey, key, ctx->authkey_len); | |
| 1171 | ||
| 1172 | return aead_setup(tfm, crypto_aead_authsize(tfm)); | |
| 1173 | badkey: | |
| 1174 | ctx->enckey_len = 0; | |
| 1175 | crypto_aead_set_flags(tfm, CRYPTO_TFM_RES_BAD_KEY_LEN); | |
| 1176 | return -EINVAL; | |
| 1177 | } | |
| 1178 | ||
| 1179 | static int aead_encrypt(struct aead_request *req) | |
| 1180 | { | |
| 1181 | unsigned ivsize = crypto_aead_ivsize(crypto_aead_reqtfm(req)); | |
| 1182 | return aead_perform(req, 1, req->assoclen + ivsize, | |
| 1183 | req->cryptlen, req->iv); | |
| 1184 | } | |
| 1185 | ||
| 1186 | static int aead_decrypt(struct aead_request *req) | |
| 1187 | { | |
| 1188 | unsigned ivsize = crypto_aead_ivsize(crypto_aead_reqtfm(req)); | |
| 1189 | return aead_perform(req, 0, req->assoclen + ivsize, | |
| 1190 | req->cryptlen, req->iv); | |
| 1191 | } | |
| 1192 | ||
| 1193 | static int aead_givencrypt(struct aead_givcrypt_request *req) | |
| 1194 | { | |
| 1195 | struct crypto_aead *tfm = aead_givcrypt_reqtfm(req); | |
| 1196 | struct ixp_ctx *ctx = crypto_aead_ctx(tfm); | |
| 1197 | unsigned len, ivsize = crypto_aead_ivsize(tfm); | |
| 1198 | __be64 seq; | |
| 1199 | ||
| 1200 | /* copied from eseqiv.c */ | |
| 1201 | if (!ctx->salted) { | |
| 1202 | get_random_bytes(ctx->salt, ivsize); | |
| 1203 | ctx->salted = 1; | |
| 1204 | } | |
| 1205 | memcpy(req->areq.iv, ctx->salt, ivsize); | |
| 1206 | len = ivsize; | |
| 1207 | if (ivsize > sizeof(u64)) { | |
| 1208 | memset(req->giv, 0, ivsize - sizeof(u64)); | |
| 1209 | len = sizeof(u64); | |
| 1210 | } | |
| 1211 | seq = cpu_to_be64(req->seq); | |
| 1212 | memcpy(req->giv + ivsize - len, &seq, len); | |
| 1213 | return aead_perform(&req->areq, 1, req->areq.assoclen, | |
| 1214 | req->areq.cryptlen +ivsize, req->giv); | |
| 1215 | } | |
| 1216 | ||
| 1217 | static struct ixp_alg ixp4xx_algos[] = { | |
| 1218 | { | |
| 1219 | .crypto = { | |
| 1220 | .cra_name = "cbc(des)", | |
| 1221 | .cra_blocksize = DES_BLOCK_SIZE, | |
| 1222 | .cra_u = { .ablkcipher = { | |
| 1223 | .min_keysize = DES_KEY_SIZE, | |
| 1224 | .max_keysize = DES_KEY_SIZE, | |
| 1225 | .ivsize = DES_BLOCK_SIZE, | |
| 1226 | .geniv = "eseqiv", | |
| 1227 | } | |
| 1228 | } | |
| 1229 | }, | |
| 1230 | .cfg_enc = CIPH_ENCR | MOD_DES | MOD_CBC_ENC | KEYLEN_192, | |
| 1231 | .cfg_dec = CIPH_DECR | MOD_DES | MOD_CBC_DEC | KEYLEN_192, | |
| 1232 | ||
| 1233 | }, { | |
| 1234 | .crypto = { | |
| 1235 | .cra_name = "ecb(des)", | |
| 1236 | .cra_blocksize = DES_BLOCK_SIZE, | |
| 1237 | .cra_u = { .ablkcipher = { | |
| 1238 | .min_keysize = DES_KEY_SIZE, | |
| 1239 | .max_keysize = DES_KEY_SIZE, | |
| 1240 | } | |
| 1241 | } | |
| 1242 | }, | |
| 1243 | .cfg_enc = CIPH_ENCR | MOD_DES | MOD_ECB | KEYLEN_192, | |
| 1244 | .cfg_dec = CIPH_DECR | MOD_DES | MOD_ECB | KEYLEN_192, | |
| 1245 | }, { | |
| 1246 | .crypto = { | |
| 1247 | .cra_name = "cbc(des3_ede)", | |
| 1248 | .cra_blocksize = DES3_EDE_BLOCK_SIZE, | |
| 1249 | .cra_u = { .ablkcipher = { | |
| 1250 | .min_keysize = DES3_EDE_KEY_SIZE, | |
| 1251 | .max_keysize = DES3_EDE_KEY_SIZE, | |
| 1252 | .ivsize = DES3_EDE_BLOCK_SIZE, | |
| 1253 | .geniv = "eseqiv", | |
| 1254 | } | |
| 1255 | } | |
| 1256 | }, | |
| 1257 | .cfg_enc = CIPH_ENCR | MOD_3DES | MOD_CBC_ENC | KEYLEN_192, | |
| 1258 | .cfg_dec = CIPH_DECR | MOD_3DES | MOD_CBC_DEC | KEYLEN_192, | |
| 1259 | }, { | |
| 1260 | .crypto = { | |
| 1261 | .cra_name = "ecb(des3_ede)", | |
| 1262 | .cra_blocksize = DES3_EDE_BLOCK_SIZE, | |
| 1263 | .cra_u = { .ablkcipher = { | |
| 1264 | .min_keysize = DES3_EDE_KEY_SIZE, | |
| 1265 | .max_keysize = DES3_EDE_KEY_SIZE, | |
| 1266 | } | |
| 1267 | } | |
| 1268 | }, | |
| 1269 | .cfg_enc = CIPH_ENCR | MOD_3DES | MOD_ECB | KEYLEN_192, | |
| 1270 | .cfg_dec = CIPH_DECR | MOD_3DES | MOD_ECB | KEYLEN_192, | |
| 1271 | }, { | |
| 1272 | .crypto = { | |
| 1273 | .cra_name = "cbc(aes)", | |
| 1274 | .cra_blocksize = AES_BLOCK_SIZE, | |
| 1275 | .cra_u = { .ablkcipher = { | |
| 1276 | .min_keysize = AES_MIN_KEY_SIZE, | |
| 1277 | .max_keysize = AES_MAX_KEY_SIZE, | |
| 1278 | .ivsize = AES_BLOCK_SIZE, | |
| 1279 | .geniv = "eseqiv", | |
| 1280 | } | |
| 1281 | } | |
| 1282 | }, | |
| 1283 | .cfg_enc = CIPH_ENCR | MOD_AES | MOD_CBC_ENC, | |
| 1284 | .cfg_dec = CIPH_DECR | MOD_AES | MOD_CBC_DEC, | |
| 1285 | }, { | |
| 1286 | .crypto = { | |
| 1287 | .cra_name = "ecb(aes)", | |
| 1288 | .cra_blocksize = AES_BLOCK_SIZE, | |
| 1289 | .cra_u = { .ablkcipher = { | |
| 1290 | .min_keysize = AES_MIN_KEY_SIZE, | |
| 1291 | .max_keysize = AES_MAX_KEY_SIZE, | |
| 1292 | } | |
| 1293 | } | |
| 1294 | }, | |
| 1295 | .cfg_enc = CIPH_ENCR | MOD_AES | MOD_ECB, | |
| 1296 | .cfg_dec = CIPH_DECR | MOD_AES | MOD_ECB, | |
| 1297 | }, { | |
| 1298 | .crypto = { | |
| 1299 | .cra_name = "ctr(aes)", | |
| 1300 | .cra_blocksize = AES_BLOCK_SIZE, | |
| 1301 | .cra_u = { .ablkcipher = { | |
| 1302 | .min_keysize = AES_MIN_KEY_SIZE, | |
| 1303 | .max_keysize = AES_MAX_KEY_SIZE, | |
| 1304 | .ivsize = AES_BLOCK_SIZE, | |
| 1305 | .geniv = "eseqiv", | |
| 1306 | } | |
| 1307 | } | |
| 1308 | }, | |
| 1309 | .cfg_enc = CIPH_ENCR | MOD_AES | MOD_CTR, | |
| 1310 | .cfg_dec = CIPH_ENCR | MOD_AES | MOD_CTR, | |
| 1311 | }, { | |
| 1312 | .crypto = { | |
| 1313 | .cra_name = "rfc3686(ctr(aes))", | |
| 1314 | .cra_blocksize = AES_BLOCK_SIZE, | |
| 1315 | .cra_u = { .ablkcipher = { | |
| 1316 | .min_keysize = AES_MIN_KEY_SIZE, | |
| 1317 | .max_keysize = AES_MAX_KEY_SIZE, | |
| 1318 | .ivsize = AES_BLOCK_SIZE, | |
| 1319 | .geniv = "eseqiv", | |
| 1320 | .setkey = ablk_rfc3686_setkey, | |
| 1321 | .encrypt = ablk_rfc3686_crypt, | |
| 1322 | .decrypt = ablk_rfc3686_crypt } | |
| 1323 | } | |
| 1324 | }, | |
| 1325 | .cfg_enc = CIPH_ENCR | MOD_AES | MOD_CTR, | |
| 1326 | .cfg_dec = CIPH_ENCR | MOD_AES | MOD_CTR, | |
| 1327 | }, { | |
| 1328 | .crypto = { | |
| 1329 | .cra_name = "authenc(hmac(md5),cbc(des))", | |
| 1330 | .cra_blocksize = DES_BLOCK_SIZE, | |
| 1331 | .cra_u = { .aead = { | |
| 1332 | .ivsize = DES_BLOCK_SIZE, | |
| 1333 | .maxauthsize = MD5_DIGEST_SIZE, | |
| 1334 | } | |
| 1335 | } | |
| 1336 | }, | |
| 1337 | .hash = &hash_alg_md5, | |
| 1338 | .cfg_enc = CIPH_ENCR | MOD_DES | MOD_CBC_ENC | KEYLEN_192, | |
| 1339 | .cfg_dec = CIPH_DECR | MOD_DES | MOD_CBC_DEC | KEYLEN_192, | |
| 1340 | }, { | |
| 1341 | .crypto = { | |
| 1342 | .cra_name = "authenc(hmac(md5),cbc(des3_ede))", | |
| 1343 | .cra_blocksize = DES3_EDE_BLOCK_SIZE, | |
| 1344 | .cra_u = { .aead = { | |
| 1345 | .ivsize = DES3_EDE_BLOCK_SIZE, | |
| 1346 | .maxauthsize = MD5_DIGEST_SIZE, | |
| 1347 | } | |
| 1348 | } | |
| 1349 | }, | |
| 1350 | .hash = &hash_alg_md5, | |
| 1351 | .cfg_enc = CIPH_ENCR | MOD_3DES | MOD_CBC_ENC | KEYLEN_192, | |
| 1352 | .cfg_dec = CIPH_DECR | MOD_3DES | MOD_CBC_DEC | KEYLEN_192, | |
| 1353 | }, { | |
| 1354 | .crypto = { | |
| 1355 | .cra_name = "authenc(hmac(sha1),cbc(des))", | |
| 1356 | .cra_blocksize = DES_BLOCK_SIZE, | |
| 1357 | .cra_u = { .aead = { | |
| 1358 | .ivsize = DES_BLOCK_SIZE, | |
| 1359 | .maxauthsize = SHA1_DIGEST_SIZE, | |
| 1360 | } | |
| 1361 | } | |
| 1362 | }, | |
| 1363 | .hash = &hash_alg_sha1, | |
| 1364 | .cfg_enc = CIPH_ENCR | MOD_DES | MOD_CBC_ENC | KEYLEN_192, | |
| 1365 | .cfg_dec = CIPH_DECR | MOD_DES | MOD_CBC_DEC | KEYLEN_192, | |
| 1366 | }, { | |
| 1367 | .crypto = { | |
| 1368 | .cra_name = "authenc(hmac(sha1),cbc(des3_ede))", | |
| 1369 | .cra_blocksize = DES3_EDE_BLOCK_SIZE, | |
| 1370 | .cra_u = { .aead = { | |
| 1371 | .ivsize = DES3_EDE_BLOCK_SIZE, | |
| 1372 | .maxauthsize = SHA1_DIGEST_SIZE, | |
| 1373 | } | |
| 1374 | } | |
| 1375 | }, | |
| 1376 | .hash = &hash_alg_sha1, | |
| 1377 | .cfg_enc = CIPH_ENCR | MOD_3DES | MOD_CBC_ENC | KEYLEN_192, | |
| 1378 | .cfg_dec = CIPH_DECR | MOD_3DES | MOD_CBC_DEC | KEYLEN_192, | |
| 1379 | }, { | |
| 1380 | .crypto = { | |
| 1381 | .cra_name = "authenc(hmac(md5),cbc(aes))", | |
| 1382 | .cra_blocksize = AES_BLOCK_SIZE, | |
| 1383 | .cra_u = { .aead = { | |
| 1384 | .ivsize = AES_BLOCK_SIZE, | |
| 1385 | .maxauthsize = MD5_DIGEST_SIZE, | |
| 1386 | } | |
| 1387 | } | |
| 1388 | }, | |
| 1389 | .hash = &hash_alg_md5, | |
| 1390 | .cfg_enc = CIPH_ENCR | MOD_AES | MOD_CBC_ENC, | |
| 1391 | .cfg_dec = CIPH_DECR | MOD_AES | MOD_CBC_DEC, | |
| 1392 | }, { | |
| 1393 | .crypto = { | |
| 1394 | .cra_name = "authenc(hmac(sha1),cbc(aes))", | |
| 1395 | .cra_blocksize = AES_BLOCK_SIZE, | |
| 1396 | .cra_u = { .aead = { | |
| 1397 | .ivsize = AES_BLOCK_SIZE, | |
| 1398 | .maxauthsize = SHA1_DIGEST_SIZE, | |
| 1399 | } | |
| 1400 | } | |
| 1401 | }, | |
| 1402 | .hash = &hash_alg_sha1, | |
| 1403 | .cfg_enc = CIPH_ENCR | MOD_AES | MOD_CBC_ENC, | |
| 1404 | .cfg_dec = CIPH_DECR | MOD_AES | MOD_CBC_DEC, | |
| 1405 | } }; | |
| 1406 | ||
| 1407 | #define IXP_POSTFIX "-ixp4xx" | |
| d8cbc3f7 RK |
1408 | |
| 1409 | static const struct platform_device_info ixp_dev_info __initdata = { | |
| 1410 | .name = DRIVER_NAME, | |
| 1411 | .id = 0, | |
| 1412 | .dma_mask = DMA_BIT_MASK(32), | |
| 1413 | }; | |
| 1414 | ||
| 81bef015 CH |
1415 | static int __init ixp_module_init(void) |
| 1416 | { | |
| 1417 | int num = ARRAY_SIZE(ixp4xx_algos); | |
| d8cbc3f7 | 1418 | int i, err ; |
| 81bef015 | 1419 | |
| d8cbc3f7 RK |
1420 | pdev = platform_device_register_full(&ixp_dev_info); |
| 1421 | if (IS_ERR(pdev)) | |
| 1422 | return PTR_ERR(pdev); | |
| 1423 | ||
| 1424 | dev = &pdev->dev; | |
| 81bef015 CH |
1425 | |
| 1426 | spin_lock_init(&desc_lock); | |
| 1427 | spin_lock_init(&emerg_lock); | |
| 1428 | ||
| 1429 | err = init_ixp_crypto(); | |
| 1430 | if (err) { | |
| d8cbc3f7 | 1431 | platform_device_unregister(pdev); |
| 81bef015 CH |
1432 | return err; |
| 1433 | } | |
| 1434 | for (i=0; i< num; i++) { | |
| 1435 | struct crypto_alg *cra = &ixp4xx_algos[i].crypto; | |
| 1436 | ||
| 1437 | if (snprintf(cra->cra_driver_name, CRYPTO_MAX_ALG_NAME, | |
| 1438 | "%s"IXP_POSTFIX, cra->cra_name) >= | |
| 1439 | CRYPTO_MAX_ALG_NAME) | |
| 1440 | { | |
| 1441 | continue; | |
| 1442 | } | |
| 1443 | if (!support_aes && (ixp4xx_algos[i].cfg_enc & MOD_AES)) { | |
| 1444 | continue; | |
| 1445 | } | |
| 1446 | if (!ixp4xx_algos[i].hash) { | |
| 1447 | /* block ciphers */ | |
| 1448 | cra->cra_type = &crypto_ablkcipher_type; | |
| 1449 | cra->cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | | |
| d912bb76 | 1450 | CRYPTO_ALG_KERN_DRIVER_ONLY | |
| 81bef015 CH |
1451 | CRYPTO_ALG_ASYNC; |
| 1452 | if (!cra->cra_ablkcipher.setkey) | |
| 1453 | cra->cra_ablkcipher.setkey = ablk_setkey; | |
| 1454 | if (!cra->cra_ablkcipher.encrypt) | |
| 1455 | cra->cra_ablkcipher.encrypt = ablk_encrypt; | |
| 1456 | if (!cra->cra_ablkcipher.decrypt) | |
| 1457 | cra->cra_ablkcipher.decrypt = ablk_decrypt; | |
| 1458 | cra->cra_init = init_tfm_ablk; | |
| 1459 | } else { | |
| 1460 | /* authenc */ | |
| 1461 | cra->cra_type = &crypto_aead_type; | |
| 1462 | cra->cra_flags = CRYPTO_ALG_TYPE_AEAD | | |
| d912bb76 | 1463 | CRYPTO_ALG_KERN_DRIVER_ONLY | |
| 81bef015 CH |
1464 | CRYPTO_ALG_ASYNC; |
| 1465 | cra->cra_aead.setkey = aead_setkey; | |
| 1466 | cra->cra_aead.setauthsize = aead_setauthsize; | |
| 1467 | cra->cra_aead.encrypt = aead_encrypt; | |
| 1468 | cra->cra_aead.decrypt = aead_decrypt; | |
| 1469 | cra->cra_aead.givencrypt = aead_givencrypt; | |
| 1470 | cra->cra_init = init_tfm_aead; | |
| 1471 | } | |
| 1472 | cra->cra_ctxsize = sizeof(struct ixp_ctx); | |
| 1473 | cra->cra_module = THIS_MODULE; | |
| 1474 | cra->cra_alignmask = 3; | |
| 1475 | cra->cra_priority = 300; | |
| 1476 | cra->cra_exit = exit_tfm; | |
| 1477 | if (crypto_register_alg(cra)) | |
| 1478 | printk(KERN_ERR "Failed to register '%s'\n", | |
| 1479 | cra->cra_name); | |
| 1480 | else | |
| 1481 | ixp4xx_algos[i].registered = 1; | |
| 1482 | } | |
| 1483 | return 0; | |
| 1484 | } | |
| 1485 | ||
| 1486 | static void __exit ixp_module_exit(void) | |
| 1487 | { | |
| 1488 | int num = ARRAY_SIZE(ixp4xx_algos); | |
| 1489 | int i; | |
| 1490 | ||
| 1491 | for (i=0; i< num; i++) { | |
| 1492 | if (ixp4xx_algos[i].registered) | |
| 1493 | crypto_unregister_alg(&ixp4xx_algos[i].crypto); | |
| 1494 | } | |
| 1495 | release_ixp_crypto(); | |
| d8cbc3f7 | 1496 | platform_device_unregister(pdev); |
| 81bef015 CH |
1497 | } |
| 1498 | ||
| 1499 | module_init(ixp_module_init); | |
| 1500 | module_exit(ixp_module_exit); | |
| 1501 | ||
| 1502 | MODULE_LICENSE("GPL"); | |
| 1503 | MODULE_AUTHOR("Christian Hohnstaedt <chohnstaedt@innominate.com>"); | |
| 1504 | MODULE_DESCRIPTION("IXP4xx hardware crypto"); | |
| 1505 |