Commit f85a762e authored by Arnaud Ebalard's avatar Arnaud Ebalard Committed by Herbert Xu
Browse files

crypto: marvell/cesa - add SHA256 support 



Add support for SHA256 operations.

Signed-off-by: default avatarArnaud Ebalard <arno@natisbad.org>
Signed-off-by: default avatarBoris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 7aeef693

drivers/crypto/marvell/cesa.c

+2 −0
Original line number Diff line number Diff line
@@ -180,8 +180,10 @@ 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 = {

drivers/crypto/marvell/cesa.h

+2 −0
Original line number Diff line number Diff line
@@ -776,8 +776,10 @@ 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;

drivers/crypto/marvell/hash.c

+159 −0
Original line number Diff line number Diff line
@@ -975,6 +975,95 @@ 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;
@@ -1280,3 +1369,73 @@ 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,

	.export = mv_cesa_sha256_export,

	.import = mv_cesa_sha256_import,

	.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,

		 }

	}

};