[PATCH 1/2] crypto: marvell - Use an unique pool to copy results of requests

[Romain Perier]

So far, we used a dedicated dma pool to copy the result of outer IV for
cipher requests. Instead of using a dma pool per outer data, we prefer
use a common dma pool that contains the part of the SRAM that is likely
to be used by the 'complete' operation, later. In this way, any type of
result can be retrieved by DMA for cipher or ahash requests.

Signed-off-by: Romain Perier <romain.perier at free-electrons.com>
---
 drivers/crypto/marvell/cesa.c   |  4 ++--
 drivers/crypto/marvell/cesa.h   |  6 +++---
 drivers/crypto/marvell/cipher.c |  2 +-
 drivers/crypto/marvell/tdma.c   | 16 ++++++++--------
 4 files changed, 14 insertions(+), 14 deletions(-)

diff --git a/drivers/crypto/marvell/cesa.c b/drivers/crypto/marvell/cesa.c
index 37dadb2..4d308ad 100644
--- a/drivers/crypto/marvell/cesa.c
+++ b/drivers/crypto/marvell/cesa.c
@@ -375,8 +375,8 @@ static int mv_cesa_dev_dma_init(struct mv_cesa_dev *cesa)
 	if (!dma->padding_pool)
 		return -ENOMEM;
 
-	dma->iv_pool = dmam_pool_create("cesa_iv", dev, 16, 1, 0);
-	if (!dma->iv_pool)
+	dma->result_pool = dmam_pool_create("cesa_result", dev, 96, 1, 0);
+	if (!dma->result_pool)
 		return -ENOMEM;
 
 	cesa->dma = dma;
diff --git a/drivers/crypto/marvell/cesa.h b/drivers/crypto/marvell/cesa.h
index e423d33..3be1aa3 100644
--- a/drivers/crypto/marvell/cesa.h
+++ b/drivers/crypto/marvell/cesa.h
@@ -277,7 +277,7 @@ struct mv_cesa_op_ctx {
 #define CESA_TDMA_DUMMY				0
 #define CESA_TDMA_DATA				1
 #define CESA_TDMA_OP				2
-#define CESA_TDMA_IV				3
+#define CESA_TDMA_RESULT			3
 
 /**
  * struct mv_cesa_tdma_desc - TDMA descriptor
@@ -393,7 +393,7 @@ struct mv_cesa_dev_dma {
 	struct dma_pool *op_pool;
 	struct dma_pool *cache_pool;
 	struct dma_pool *padding_pool;
-	struct dma_pool *iv_pool;
+	struct dma_pool *result_pool;
 };
 
 /**
@@ -839,7 +839,7 @@ mv_cesa_tdma_desc_iter_init(struct mv_cesa_tdma_chain *chain)
 	memset(chain, 0, sizeof(*chain));
 }
 
-int mv_cesa_dma_add_iv_op(struct mv_cesa_tdma_chain *chain, dma_addr_t src,
+int mv_cesa_dma_add_result_op(struct mv_cesa_tdma_chain *chain, dma_addr_t src,
 			  u32 size, u32 flags, gfp_t gfp_flags);
 
 struct mv_cesa_op_ctx *mv_cesa_dma_add_op(struct mv_cesa_tdma_chain *chain,
diff --git a/drivers/crypto/marvell/cipher.c b/drivers/crypto/marvell/cipher.c
index d19dc96..bd575b1 100644
--- a/drivers/crypto/marvell/cipher.c
+++ b/drivers/crypto/marvell/cipher.c
@@ -373,7 +373,7 @@ static int mv_cesa_ablkcipher_dma_req_init(struct ablkcipher_request *req,
 
 	/* Add output data for IV */
 	ivsize = crypto_ablkcipher_ivsize(crypto_ablkcipher_reqtfm(req));
-	ret = mv_cesa_dma_add_iv_op(&basereq->chain, CESA_SA_CRYPT_IV_SRAM_OFFSET,
+	ret = mv_cesa_dma_add_result_op(&basereq->chain, CESA_SA_CRYPT_IV_SRAM_OFFSET,
 				    ivsize, CESA_TDMA_SRC_IN_SRAM, flags);
 
 	if (ret)
diff --git a/drivers/crypto/marvell/tdma.c b/drivers/crypto/marvell/tdma.c
index 9fd7a5f..499a1d3 100644
--- a/drivers/crypto/marvell/tdma.c
+++ b/drivers/crypto/marvell/tdma.c
@@ -69,8 +69,8 @@ void mv_cesa_dma_cleanup(struct mv_cesa_req *dreq)
 		if (type == CESA_TDMA_OP)
 			dma_pool_free(cesa_dev->dma->op_pool, tdma->op,
 				      le32_to_cpu(tdma->src));
-		else if (type == CESA_TDMA_IV)
-			dma_pool_free(cesa_dev->dma->iv_pool, tdma->data,
+		else if (type == CESA_TDMA_RESULT)
+			dma_pool_free(cesa_dev->dma->result_pool, tdma->data,
 				      le32_to_cpu(tdma->dst));
 
 		tdma = tdma->next;
@@ -209,29 +209,29 @@ mv_cesa_dma_add_desc(struct mv_cesa_tdma_chain *chain, gfp_t flags)
 	return new_tdma;
 }
 
-int mv_cesa_dma_add_iv_op(struct mv_cesa_tdma_chain *chain, dma_addr_t src,
+int mv_cesa_dma_add_result_op(struct mv_cesa_tdma_chain *chain, dma_addr_t src,
 			  u32 size, u32 flags, gfp_t gfp_flags)
 {
 
 	struct mv_cesa_tdma_desc *tdma;
-	u8 *iv;
+	u8 *result;
 	dma_addr_t dma_handle;
 
 	tdma = mv_cesa_dma_add_desc(chain, gfp_flags);
 	if (IS_ERR(tdma))
 		return PTR_ERR(tdma);
 
-	iv = dma_pool_alloc(cesa_dev->dma->iv_pool, gfp_flags, &dma_handle);
-	if (!iv)
+	result = dma_pool_alloc(cesa_dev->dma->result_pool, gfp_flags, &dma_handle);
+	if (!result)
 		return -ENOMEM;
 
 	tdma->byte_cnt = cpu_to_le32(size | BIT(31));
 	tdma->src = src;
 	tdma->dst = cpu_to_le32(dma_handle);
-	tdma->data = iv;
+	tdma->data = result;
 
 	flags &= (CESA_TDMA_DST_IN_SRAM | CESA_TDMA_SRC_IN_SRAM);
-	tdma->flags = flags | CESA_TDMA_IV;
+	tdma->flags = flags | CESA_TDMA_RESULT;
 	return 0;
 }
 
-- 
2.8.1