Commit 4b1d7deb authored by Gilad Ben-Yossef's avatar Gilad Ben-Yossef Committed by Herbert Xu
Browse files

crypto: ccree - move MLLI desc. before key load 



Refactor to move the descriptor copying the MLLI line to SRAM
to before the key loading descriptor in preparation to the
introduction of CPP later on.

Signed-off-by: default avatarGilad Ben-Yossef <gilad@benyossef.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent dd8486c7

drivers/crypto/ccree/cc_cipher.c

+35 −23
Original line number Diff line number Diff line
@@ -558,12 +558,38 @@ static void cc_setup_key_desc(struct crypto_tfm *tfm, 
	}

}



static void cc_setup_cipher_data(struct crypto_tfm *tfm,

static void cc_setup_mlli_desc(struct crypto_tfm *tfm,

			       struct cipher_req_ctx *req_ctx,

				 struct scatterlist *dst,

				 struct scatterlist *src, unsigned int nbytes,

				 void *areq, struct cc_hw_desc desc[],

				 unsigned int *seq_size)

			       struct scatterlist *dst, struct scatterlist *src,

			       unsigned int nbytes, void *areq,

			       struct cc_hw_desc desc[], unsigned int *seq_size)

{

	struct cc_cipher_ctx *ctx_p = crypto_tfm_ctx(tfm);

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



	if (req_ctx->dma_buf_type == CC_DMA_BUF_MLLI) {

		/* bypass */

		dev_dbg(dev, " bypass params addr %pad length 0x%X addr 0x%08X\n",

			&req_ctx->mlli_params.mlli_dma_addr,

			req_ctx->mlli_params.mlli_len,

			(unsigned int)ctx_p->drvdata->mlli_sram_addr);

		hw_desc_init(&desc[*seq_size]);

		set_din_type(&desc[*seq_size], DMA_DLLI,

			     req_ctx->mlli_params.mlli_dma_addr,

			     req_ctx->mlli_params.mlli_len, NS_BIT);

		set_dout_sram(&desc[*seq_size],

			      ctx_p->drvdata->mlli_sram_addr,

			      req_ctx->mlli_params.mlli_len);

		set_flow_mode(&desc[*seq_size], BYPASS);

		(*seq_size)++;

	}

}



static void cc_setup_flow_desc(struct crypto_tfm *tfm,

			       struct cipher_req_ctx *req_ctx,

			       struct scatterlist *dst, struct scatterlist *src,

			       unsigned int nbytes, void *areq,

			       struct cc_hw_desc desc[], unsigned int *seq_size)

{

	struct cc_cipher_ctx *ctx_p = crypto_tfm_ctx(tfm);

	struct device *dev = drvdata_to_dev(ctx_p->drvdata);
@@ -600,21 +626,6 @@ static void cc_setup_cipher_data(struct crypto_tfm *tfm, 
		set_flow_mode(&desc[*seq_size], flow_mode);

		(*seq_size)++;

	} else {

		/* bypass */

		dev_dbg(dev, " bypass params addr %pad length 0x%X addr 0x%08X\n",

			&req_ctx->mlli_params.mlli_dma_addr,

			req_ctx->mlli_params.mlli_len,

			(unsigned int)ctx_p->drvdata->mlli_sram_addr);

		hw_desc_init(&desc[*seq_size]);

		set_din_type(&desc[*seq_size], DMA_DLLI,

			     req_ctx->mlli_params.mlli_dma_addr,

			     req_ctx->mlli_params.mlli_len, NS_BIT);

		set_dout_sram(&desc[*seq_size],

			      ctx_p->drvdata->mlli_sram_addr,

			      req_ctx->mlli_params.mlli_len);

		set_flow_mode(&desc[*seq_size], BYPASS);

		(*seq_size)++;



		hw_desc_init(&desc[*seq_size]);

		set_din_type(&desc[*seq_size], DMA_MLLI,

			     ctx_p->drvdata->mlli_sram_addr,
@@ -794,11 +805,12 @@ static int cc_cipher_process(struct skcipher_request *req, 


	/* Setup IV and XEX key used */

	cc_setup_state_desc(tfm, req_ctx, ivsize, nbytes, desc, &seq_len);

	/* Setup MLLI line, if needed */

	cc_setup_mlli_desc(tfm, req_ctx, dst, src, nbytes, req, desc, &seq_len);

	/* Setup key */

	cc_setup_key_desc(tfm, req_ctx, nbytes, desc, &seq_len);

	/* Data processing */

	cc_setup_cipher_data(tfm, req_ctx, dst, src, nbytes, req, desc,

			     &seq_len);

	cc_setup_flow_desc(tfm, req_ctx, dst, src, nbytes, req, desc, &seq_len);



	/* STAT_PHASE_3: Lock HW and push sequence */