Commit 3d035ae0 authored by Gilad Ben-Yossef's avatar Gilad Ben-Yossef Committed by Greg Kroah-Hartman
Browse files

staging: ccree: remove cipher sync blkcipher remains 



Remove the remains of no longer existing support for running
blkcipher is sync mode.

Signed-off-by: default avatarGilad Ben-Yossef <gilad@benyossef.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent fc2a36c0

drivers/staging/ccree/ssi_cipher.c

+51 −105
Original line number Diff line number Diff line
@@ -180,7 +180,7 @@ static unsigned int get_max_keysize(struct crypto_tfm *tfm) 
	return 0;

}



static int ssi_blkcipher_init(struct crypto_tfm *tfm)

static int ssi_ablkcipher_init(struct crypto_tfm *tfm)

{

	struct ssi_ablkcipher_ctx *ctx_p = crypto_tfm_ctx(tfm);

	struct crypto_alg *alg = tfm->__crt_alg;
@@ -189,10 +189,13 @@ static int ssi_blkcipher_init(struct crypto_tfm *tfm) 
	struct device *dev = drvdata_to_dev(ssi_alg->drvdata);

	int rc = 0;

	unsigned int max_key_buf_size = get_max_keysize(tfm);

	struct ablkcipher_tfm *ablktfm = &tfm->crt_ablkcipher;



	dev_dbg(dev, "Initializing context @%p for %s\n", ctx_p,

		crypto_tfm_alg_name(tfm));



	ablktfm->reqsize = sizeof(struct blkcipher_req_ctx);



	ctx_p->cipher_mode = ssi_alg->cipher_mode;

	ctx_p->flow_mode = ssi_alg->flow_mode;

	ctx_p->drvdata = ssi_alg->drvdata;
@@ -297,10 +300,10 @@ static enum cc_hw_crypto_key hw_key_to_cc_hw_key(int slot_num) 
	return END_OF_KEYS;

}



static int ssi_blkcipher_setkey(struct crypto_tfm *tfm,

				const u8 *key,

static int ssi_ablkcipher_setkey(struct crypto_ablkcipher *atfm, const u8 *key,

				unsigned int keylen)

{

	struct crypto_tfm *tfm = crypto_ablkcipher_tfm(atfm);

	struct ssi_ablkcipher_ctx *ctx_p = crypto_tfm_ctx(tfm);

	struct device *dev = drvdata_to_dev(ctx_p->drvdata);

	u32 tmp[DES_EXPKEY_WORDS];
@@ -700,21 +703,20 @@ ssi_blkcipher_create_data_desc( 
	}

}



static int ssi_blkcipher_complete(struct device *dev,

				  struct ssi_ablkcipher_ctx *ctx_p,

				  struct blkcipher_req_ctx *req_ctx,

				  struct scatterlist *dst,

				  struct scatterlist *src,

				  unsigned int ivsize,

				  void *areq)

static void ssi_ablkcipher_complete(struct device *dev, void *ssi_req)

{

	struct ablkcipher_request *areq = (struct ablkcipher_request *)ssi_req;

	struct scatterlist *dst = areq->dst;

	struct scatterlist *src = areq->src;

	struct blkcipher_req_ctx *req_ctx = ablkcipher_request_ctx(areq);

	struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(areq);

	unsigned int ivsize = crypto_ablkcipher_ivsize(tfm);

	int completion_error = 0;

	struct ablkcipher_request *req = (struct ablkcipher_request *)areq;



	cc_unmap_blkcipher_request(dev, req_ctx, ivsize, src, dst);

	kfree(req_ctx->iv);



	if (areq) {

	/*

	 * The crypto API expects us to set the req->info to the last

	 * ciphertext block. For encrypt, simply copy from the result.
@@ -732,30 +734,28 @@ static int ssi_blkcipher_complete(struct device *dev, 
	}



	ablkcipher_request_complete(areq, completion_error);

		return 0;

	}

	return completion_error;

}



static int ssi_blkcipher_process(

	struct crypto_tfm *tfm,

	struct blkcipher_req_ctx *req_ctx,

	struct scatterlist *dst, struct scatterlist *src,

	unsigned int nbytes,

	void *info, //req info

	unsigned int ivsize,

	void *areq,

static int cc_cipher_process(struct ablkcipher_request *req,

			     enum drv_crypto_direction direction)

{

	struct crypto_ablkcipher *ablk_tfm = crypto_ablkcipher_reqtfm(req);

	struct crypto_tfm *tfm = crypto_ablkcipher_tfm(ablk_tfm);

	struct blkcipher_req_ctx *req_ctx = ablkcipher_request_ctx(req);

	unsigned int ivsize = crypto_ablkcipher_ivsize(ablk_tfm);

	struct scatterlist *dst = req->dst;

	struct scatterlist *src = req->src;

	unsigned int nbytes = req->nbytes;

	void *info = req->info;

	struct ssi_ablkcipher_ctx *ctx_p = crypto_tfm_ctx(tfm);

	struct device *dev = drvdata_to_dev(ctx_p->drvdata);

	struct cc_hw_desc desc[MAX_ABLKCIPHER_SEQ_LEN];

	struct ssi_crypto_req ssi_req = {};

	int rc, seq_len = 0, cts_restore_flag = 0;



	dev_dbg(dev, "%s areq=%p info=%p nbytes=%d\n",

	dev_dbg(dev, "%s req=%p info=%p nbytes=%d\n",

		((direction == DRV_CRYPTO_DIRECTION_ENCRYPT) ?

		"Encrypt" : "Decrypt"), areq, info, nbytes);

		"Encrypt" : "Decrypt"), req, info, nbytes);



	/* STAT_PHASE_0: Init and sanity checks */
@@ -791,7 +791,7 @@ static int ssi_blkcipher_process( 


	/* Setup DX request structure */

	ssi_req.user_cb = (void *)ssi_ablkcipher_complete;

	ssi_req.user_arg = (void *)areq;

	ssi_req.user_arg = (void *)req;



#ifdef ENABLE_CYCLE_COUNT

	ssi_req.op_type = (direction == DRV_CRYPTO_DIRECTION_DECRYPT) ?
@@ -823,7 +823,7 @@ static int ssi_blkcipher_process( 
		ssi_blkcipher_create_setup_desc(tfm, req_ctx, ivsize, nbytes,

						desc, &seq_len);

	/* Data processing */

	ssi_blkcipher_create_data_desc(tfm, req_ctx, dst, src, nbytes, areq,

	ssi_blkcipher_create_data_desc(tfm, req_ctx, dst, src, nbytes, req,

				       desc, &seq_len);



	/* do we need to generate IV? */
@@ -836,25 +836,12 @@ static int ssi_blkcipher_process( 


	/* STAT_PHASE_3: Lock HW and push sequence */



	rc = send_request(ctx_p->drvdata, &ssi_req, desc, seq_len,

			  (!areq) ? 0 : 1);

	if (areq) {

	rc = send_request(ctx_p->drvdata, &ssi_req, desc, seq_len, 1);

	if (rc != -EINPROGRESS) {

		/* Failed to send the request or request completed

		 * synchronously

		 */

			cc_unmap_blkcipher_request(dev, req_ctx, ivsize, src,

						   dst);

		}



	} else {

		if (rc) {

			cc_unmap_blkcipher_request(dev, req_ctx, ivsize, src,

						   dst);

		} else {

			rc = ssi_blkcipher_complete(dev, ctx_p, req_ctx, dst,

						    src, ivsize, NULL);

		}

		cc_unmap_blkcipher_request(dev, req_ctx, ivsize, src, dst);

	}



exit_process:
@@ -869,56 +856,19 @@ exit_process: 
	return rc;

}



static void ssi_ablkcipher_complete(struct device *dev, void *ssi_req)

{

	struct ablkcipher_request *areq = (struct ablkcipher_request *)ssi_req;

	struct blkcipher_req_ctx *req_ctx = ablkcipher_request_ctx(areq);

	struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(areq);

	struct ssi_ablkcipher_ctx *ctx_p = crypto_ablkcipher_ctx(tfm);

	unsigned int ivsize = crypto_ablkcipher_ivsize(tfm);



	ssi_blkcipher_complete(dev, ctx_p, req_ctx, areq->dst, areq->src,

			       ivsize, areq);

}



/* Async wrap functions */



static int ssi_ablkcipher_init(struct crypto_tfm *tfm)

{

	struct ablkcipher_tfm *ablktfm = &tfm->crt_ablkcipher;



	ablktfm->reqsize = sizeof(struct blkcipher_req_ctx);



	return ssi_blkcipher_init(tfm);

}



static int ssi_ablkcipher_setkey(struct crypto_ablkcipher *tfm,

				 const u8 *key,

				 unsigned int keylen)

{

	return ssi_blkcipher_setkey(crypto_ablkcipher_tfm(tfm), key, keylen);

}



static int ssi_ablkcipher_encrypt(struct ablkcipher_request *req)

{

	struct crypto_ablkcipher *ablk_tfm = crypto_ablkcipher_reqtfm(req);

	struct crypto_tfm *tfm = crypto_ablkcipher_tfm(ablk_tfm);

	struct blkcipher_req_ctx *req_ctx = ablkcipher_request_ctx(req);

	unsigned int ivsize = crypto_ablkcipher_ivsize(ablk_tfm);



	req_ctx->is_giv = false;

	req_ctx->backup_info = NULL;



	return ssi_blkcipher_process(tfm, req_ctx, req->dst, req->src,

				     req->nbytes, req->info, ivsize,

				     (void *)req,

				     DRV_CRYPTO_DIRECTION_ENCRYPT);

	return cc_cipher_process(req, DRV_CRYPTO_DIRECTION_ENCRYPT);

}



static int ssi_ablkcipher_decrypt(struct ablkcipher_request *req)

{

	struct crypto_ablkcipher *ablk_tfm = crypto_ablkcipher_reqtfm(req);

	struct crypto_tfm *tfm = crypto_ablkcipher_tfm(ablk_tfm);

	struct blkcipher_req_ctx *req_ctx = ablkcipher_request_ctx(req);

	unsigned int ivsize = crypto_ablkcipher_ivsize(ablk_tfm);
@@ -934,15 +884,11 @@ static int ssi_ablkcipher_decrypt(struct ablkcipher_request *req) 
				 (req->nbytes - ivsize), ivsize, 0);

	req_ctx->is_giv = false;



	return ssi_blkcipher_process(tfm, req_ctx, req->dst, req->src,

				     req->nbytes, req->info, ivsize,

				     (void *)req,

				     DRV_CRYPTO_DIRECTION_DECRYPT);

	return cc_cipher_process(req, DRV_CRYPTO_DIRECTION_DECRYPT);

}



/* DX Block cipher alg */

static struct ssi_alg_template blkcipher_algs[] = {

/* Async template */

#if SSI_CC_HAS_AES_XTS

	{

		.name = "xts(aes)",

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