From: Boris Brezillon Subject: [RESEND PATCH v4 09/14] crypto: marvell/CESA: add SHA256 support Date: Fri, 12 Jun 2015 09:16:01 +0200 Message-ID: <1434093366-14681-10-git-send-email-boris.brezillon@free-electrons.com> References: <1434093366-14681-1-git-send-email-boris.brezillon@free-electrons.com> Cc: Boris Brezillon , Arnaud Ebalard , Tawfik Bayouk , Lior Amsalem , Nadav Haklai , Eran Ben-Avi , Thomas Petazzoni , Gregory CLEMENT , Jason Cooper , Sebastian Hesselbarth , Andrew Lunn , Rob Herring , Pawel Moll , Mark Rutland , Ian Campbell , Kumar Gala , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Jason Gunthorpe , "Imre Kaloz" To: Herbert Xu , "David S. Miller" , linux-crypto@vger.kernel.org Return-path: In-Reply-To: <1434093366-14681-1-git-send-email-boris.brezillon@free-electrons.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-crypto.vger.kernel.org From: Arnaud Ebalard Add support for SHA256 operations. Signed-off-by: Arnaud Ebalard Signed-off-by: Boris Brezillon --- drivers/crypto/marvell/cesa.c | 2 + drivers/crypto/marvell/cesa.h | 2 + drivers/crypto/marvell/hash.c | 157 ++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 161 insertions(+) diff --git a/drivers/crypto/marvell/cesa.c b/drivers/crypto/marvell/cesa.c index b9da0df..e4dfee0 100644 --- a/drivers/crypto/marvell/cesa.c +++ b/drivers/crypto/marvell/cesa.c @@ -176,8 +176,10 @@ static struct crypto_alg *armada_370_cipher_algs[] = { static struct ahash_alg *armada_370_ahash_algs[] = { &mv_md5_alg, &mv_sha1_alg, + &mv_sha256_alg, &mv_ahmac_md5_alg, &mv_ahmac_sha1_alg, + &mv_ahmac_sha256_alg, }; static const struct mv_cesa_caps armada_370_caps = { diff --git a/drivers/crypto/marvell/cesa.h b/drivers/crypto/marvell/cesa.h index 23c4603..497746b 100644 --- a/drivers/crypto/marvell/cesa.h +++ b/drivers/crypto/marvell/cesa.h @@ -789,8 +789,10 @@ int mv_cesa_dma_add_op_transfers(struct mv_cesa_tdma_chain *chain, extern struct ahash_alg mv_md5_alg; extern struct ahash_alg mv_sha1_alg; +extern struct ahash_alg mv_sha256_alg; extern struct ahash_alg mv_ahmac_md5_alg; extern struct ahash_alg mv_ahmac_sha1_alg; +extern struct ahash_alg mv_ahmac_sha256_alg; extern struct crypto_alg mv_cesa_ecb_des_alg; extern struct crypto_alg mv_cesa_cbc_des_alg; diff --git a/drivers/crypto/marvell/hash.c b/drivers/crypto/marvell/hash.c index 63fa493..8292bb7 100644 --- a/drivers/crypto/marvell/hash.c +++ b/drivers/crypto/marvell/hash.c @@ -973,6 +973,95 @@ struct ahash_alg mv_sha1_alg = { } }; +static int mv_cesa_sha256_init(struct ahash_request *req) +{ + struct mv_cesa_op_ctx tmpl; + + mv_cesa_set_op_cfg(&tmpl, CESA_SA_DESC_CFG_MACM_SHA256); + + mv_cesa_ahash_init(req, &tmpl); + + return 0; +} + +static int mv_cesa_sha256_digest(struct ahash_request *req) +{ + int ret; + + ret = mv_cesa_sha256_init(req); + if (ret) + return ret; + + return mv_cesa_ahash_finup(req); +} + +static int mv_cesa_sha256_export(struct ahash_request *req, void *out) +{ + struct sha256_state *out_state = out; + struct crypto_ahash *ahash = crypto_ahash_reqtfm(req); + struct mv_cesa_ahash_req *creq = ahash_request_ctx(req); + unsigned int ds = crypto_ahash_digestsize(ahash); + + out_state->count = creq->len; + memcpy(out_state->state, creq->state, ds); + memset(out_state->buf, 0, sizeof(out_state->buf)); + if (creq->cache) + memcpy(out_state->buf, creq->cache, creq->cache_ptr); + + return 0; +} + +static int mv_cesa_sha256_import(struct ahash_request *req, const void *in) +{ + const struct sha256_state *in_state = in; + struct crypto_ahash *ahash = crypto_ahash_reqtfm(req); + struct mv_cesa_ahash_req *creq = ahash_request_ctx(req); + unsigned int digsize = crypto_ahash_digestsize(ahash); + unsigned int cache_ptr; + int ret; + + creq->len = in_state->count; + memcpy(creq->state, in_state->state, digsize); + creq->cache_ptr = 0; + + cache_ptr = creq->len % SHA256_BLOCK_SIZE; + if (!cache_ptr) + return 0; + + ret = mv_cesa_ahash_alloc_cache(req); + if (ret) + return ret; + + memcpy(creq->cache, in_state->buf, cache_ptr); + creq->cache_ptr = cache_ptr; + + return 0; +} + +struct ahash_alg mv_sha256_alg = { + .init = mv_cesa_sha256_init, + .update = mv_cesa_ahash_update, + .final = mv_cesa_ahash_final, + .finup = mv_cesa_ahash_finup, + .digest = mv_cesa_sha256_digest, + .export = mv_cesa_sha256_export, + .import = mv_cesa_sha256_import, + .halg = { + .digestsize = SHA256_DIGEST_SIZE, + .base = { + .cra_name = "sha256", + .cra_driver_name = "mv-sha256", + .cra_priority = 300, + .cra_flags = CRYPTO_ALG_ASYNC | + CRYPTO_ALG_KERN_DRIVER_ONLY, + .cra_blocksize = SHA256_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct mv_cesa_hash_ctx), + .cra_init = mv_cesa_ahash_cra_init, + .cra_module = THIS_MODULE, + } + } +}; + struct mv_cesa_ahash_result { struct completion completion; int error; @@ -1274,3 +1363,71 @@ struct ahash_alg mv_ahmac_sha1_alg = { } } }; + +static int mv_cesa_ahmac_sha256_setkey(struct crypto_ahash *tfm, const u8 *key, + unsigned int keylen) +{ + struct mv_cesa_hmac_ctx *ctx = crypto_tfm_ctx(crypto_ahash_tfm(tfm)); + struct sha256_state istate, ostate; + int ret, i; + + ret = mv_cesa_ahmac_setkey("mv-sha256", key, keylen, &istate, &ostate); + if (ret) + return ret; + + for (i = 0; i < ARRAY_SIZE(istate.state); i++) + ctx->iv[i] = be32_to_cpu(istate.state[i]); + + for (i = 0; i < ARRAY_SIZE(ostate.state); i++) + ctx->iv[i + 8] = be32_to_cpu(ostate.state[i]); + + return 0; +} + +static int mv_cesa_ahmac_sha256_init(struct ahash_request *req) +{ + struct mv_cesa_hmac_ctx *ctx = crypto_tfm_ctx(req->base.tfm); + struct mv_cesa_op_ctx tmpl; + + mv_cesa_set_op_cfg(&tmpl, CESA_SA_DESC_CFG_MACM_HMAC_SHA256); + memcpy(tmpl.ctx.hash.iv, ctx->iv, sizeof(ctx->iv)); + + mv_cesa_ahash_init(req, &tmpl); + + return 0; +} + +static int mv_cesa_ahmac_sha256_digest(struct ahash_request *req) +{ + int ret; + + ret = mv_cesa_ahmac_sha256_init(req); + if (ret) + return ret; + + return mv_cesa_ahash_finup(req); +} + +struct ahash_alg mv_ahmac_sha256_alg = { + .init = mv_cesa_ahmac_sha256_init, + .update = mv_cesa_ahash_update, + .final = mv_cesa_ahash_final, + .finup = mv_cesa_ahash_finup, + .digest = mv_cesa_ahmac_sha256_digest, + .setkey = mv_cesa_ahmac_sha256_setkey, + .halg = { + .digestsize = SHA256_DIGEST_SIZE, + .statesize = sizeof(struct sha256_state), + .base = { + .cra_name = "hmac(sha256)", + .cra_driver_name = "mv-hmac-sha256", + .cra_priority = 300, + .cra_flags = CRYPTO_ALG_ASYNC | + CRYPTO_ALG_KERN_DRIVER_ONLY, + .cra_blocksize = SHA256_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct mv_cesa_hmac_ctx), + .cra_init = mv_cesa_ahmac_cra_init, + .cra_module = THIS_MODULE, + } + } +}; -- 1.9.1