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Commit 7b3aaaa0 authored by Boris Brezillon's avatar Boris Brezillon Committed by Herbert Xu
Browse files

crypto: marvell/cesa - add DES support 



Add support for DES operations.

Signed-off-by: default avatarBoris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: default avatarArnaud Ebalard <arno@natisbad.org>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent db509a45

drivers/crypto/marvell/cesa.c

+2 −0
Original line number Diff line number Diff line
@@ -169,6 +169,8 @@ static void mv_cesa_remove_algs(struct mv_cesa_dev *cesa) 
}



static struct crypto_alg *armada_370_cipher_algs[] = {

	&mv_cesa_ecb_des_alg,

	&mv_cesa_cbc_des_alg,

	&mv_cesa_ecb_aes_alg,

	&mv_cesa_cbc_aes_alg,

};

drivers/crypto/marvell/cesa.h

+2 −0
Original line number Diff line number Diff line
@@ -777,6 +777,8 @@ int mv_cesa_dma_add_op_transfers(struct mv_cesa_tdma_chain *chain, 
extern struct ahash_alg mv_sha1_alg;

extern struct ahash_alg mv_ahmac_sha1_alg;



extern struct crypto_alg mv_cesa_ecb_des_alg;

extern struct crypto_alg mv_cesa_cbc_des_alg;

extern struct crypto_alg mv_cesa_ecb_aes_alg;

extern struct crypto_alg mv_cesa_cbc_aes_alg;

drivers/crypto/marvell/cipher.c

+150 −0
Original line number Diff line number Diff line
@@ -13,9 +13,15 @@ 
 */



#include <crypto/aes.h>

#include <crypto/des.h>



#include "cesa.h"



struct mv_cesa_des_ctx {

	struct mv_cesa_ctx base;

	u8 key[DES_KEY_SIZE];

};



struct mv_cesa_aes_ctx {

	struct mv_cesa_ctx base;

	struct crypto_aes_ctx aes;
@@ -238,6 +244,30 @@ static int mv_cesa_aes_setkey(struct crypto_ablkcipher *cipher, const u8 *key, 
	return 0;

}



static int mv_cesa_des_setkey(struct crypto_ablkcipher *cipher, const u8 *key,

			      unsigned int len)

{

	struct crypto_tfm *tfm = crypto_ablkcipher_tfm(cipher);

	struct mv_cesa_des_ctx *ctx = crypto_tfm_ctx(tfm);

	u32 tmp[DES_EXPKEY_WORDS];

	int ret;



	if (len != DES_KEY_SIZE) {

		crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN);

		return -EINVAL;

	}



	ret = des_ekey(tmp, key);

	if (!ret && (tfm->crt_flags & CRYPTO_TFM_REQ_WEAK_KEY)) {

		tfm->crt_flags |= CRYPTO_TFM_RES_WEAK_KEY;

		return -EINVAL;

	}



	memcpy(ctx->key, key, DES_KEY_SIZE);



	return 0;

}



static int mv_cesa_ablkcipher_dma_req_init(struct ablkcipher_request *req,

				const struct mv_cesa_op_ctx *op_templ)

{
@@ -364,6 +394,126 @@ static int mv_cesa_ablkcipher_req_init(struct ablkcipher_request *req, 
	return ret;

}



static int mv_cesa_des_op(struct ablkcipher_request *req,

			  struct mv_cesa_op_ctx *tmpl)

{

	struct mv_cesa_des_ctx *ctx = crypto_tfm_ctx(req->base.tfm);

	int ret;



	mv_cesa_update_op_cfg(tmpl, CESA_SA_DESC_CFG_CRYPTM_DES,

			      CESA_SA_DESC_CFG_CRYPTM_MSK);



	memcpy(tmpl->ctx.blkcipher.key, ctx->key, DES_KEY_SIZE);



	ret = mv_cesa_ablkcipher_req_init(req, tmpl);

	if (ret)

		return ret;



	ret = mv_cesa_queue_req(&req->base);

	if (ret && ret != -EINPROGRESS)

		mv_cesa_ablkcipher_cleanup(req);



	return ret;

}



static int mv_cesa_ecb_des_encrypt(struct ablkcipher_request *req)

{

	struct mv_cesa_op_ctx tmpl;



	mv_cesa_set_op_cfg(&tmpl,

			   CESA_SA_DESC_CFG_CRYPTCM_ECB |

			   CESA_SA_DESC_CFG_DIR_ENC);



	return mv_cesa_des_op(req, &tmpl);

}



static int mv_cesa_ecb_des_decrypt(struct ablkcipher_request *req)

{

	struct mv_cesa_op_ctx tmpl;



	mv_cesa_set_op_cfg(&tmpl,

			   CESA_SA_DESC_CFG_CRYPTCM_ECB |

			   CESA_SA_DESC_CFG_DIR_DEC);



	return mv_cesa_des_op(req, &tmpl);

}



struct crypto_alg mv_cesa_ecb_des_alg = {

	.cra_name = "ecb(des)",

	.cra_driver_name = "mv-ecb-des",

	.cra_priority = 300,

	.cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER |

		     CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC,

	.cra_blocksize = DES_BLOCK_SIZE,

	.cra_ctxsize = sizeof(struct mv_cesa_des_ctx),

	.cra_alignmask = 0,

	.cra_type = &crypto_ablkcipher_type,

	.cra_module = THIS_MODULE,

	.cra_init = mv_cesa_ablkcipher_cra_init,

	.cra_u = {

		.ablkcipher = {

			.min_keysize = DES_KEY_SIZE,

			.max_keysize = DES_KEY_SIZE,

			.setkey = mv_cesa_des_setkey,

			.encrypt = mv_cesa_ecb_des_encrypt,

			.decrypt = mv_cesa_ecb_des_decrypt,

		},

	},

};



static int mv_cesa_cbc_des_op(struct ablkcipher_request *req,

			      struct mv_cesa_op_ctx *tmpl)

{

	mv_cesa_update_op_cfg(tmpl, CESA_SA_DESC_CFG_CRYPTCM_CBC,

			      CESA_SA_DESC_CFG_CRYPTCM_MSK);



	memcpy(tmpl->ctx.blkcipher.iv, req->info, DES_BLOCK_SIZE);



	return mv_cesa_des_op(req, tmpl);

}



static int mv_cesa_cbc_des_encrypt(struct ablkcipher_request *req)

{

	struct mv_cesa_op_ctx tmpl;



	mv_cesa_set_op_cfg(&tmpl, CESA_SA_DESC_CFG_DIR_ENC);



	return mv_cesa_cbc_des_op(req, &tmpl);

}



static int mv_cesa_cbc_des_decrypt(struct ablkcipher_request *req)

{

	struct mv_cesa_op_ctx tmpl;



	mv_cesa_set_op_cfg(&tmpl, CESA_SA_DESC_CFG_DIR_DEC);



	return mv_cesa_cbc_des_op(req, &tmpl);

}



struct crypto_alg mv_cesa_cbc_des_alg = {

	.cra_name = "cbc(des)",

	.cra_driver_name = "mv-cbc-des",

	.cra_priority = 300,

	.cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER |

		     CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC,

	.cra_blocksize = DES_BLOCK_SIZE,

	.cra_ctxsize = sizeof(struct mv_cesa_des_ctx),

	.cra_alignmask = 0,

	.cra_type = &crypto_ablkcipher_type,

	.cra_module = THIS_MODULE,

	.cra_init = mv_cesa_ablkcipher_cra_init,

	.cra_u = {

		.ablkcipher = {

			.min_keysize = DES_KEY_SIZE,

			.max_keysize = DES_KEY_SIZE,

			.ivsize	     = DES_BLOCK_SIZE,

			.setkey = mv_cesa_des_setkey,

			.encrypt = mv_cesa_cbc_des_encrypt,

			.decrypt = mv_cesa_cbc_des_decrypt,

		},

	},

};



static int mv_cesa_aes_op(struct ablkcipher_request *req,

			  struct mv_cesa_op_ctx *tmpl)

{