linux-kernel - [PATCH 03/12] crypto: caam - refactor ahash

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Message-Id: <1574029845-22796-4-git-send-email-iuliana.prodan@nxp.com>
Date:   Mon, 18 Nov 2019 00:30:36 +0200
From:   Iuliana Prodan <iuliana.prodan@....com>
To:     Herbert Xu <herbert@...dor.apana.org.au>,
        Horia Geanta <horia.geanta@....com>,
        Aymen Sghaier <aymen.sghaier@....com>
Cc:     "David S. Miller" <davem@...emloft.net>,
        Tom Lendacky <thomas.lendacky@....com>,
        Gary Hook <gary.hook@....com>, linux-crypto@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-imx <linux-imx@....com>,
        Iuliana Prodan <iuliana.prodan@....com>
Subject: [PATCH 03/12] crypto: caam - refactor ahash_done callbacks

Create two common ahash_done_* functions with the dma
direction as parameter. Then, these 2 are called with
the proper direction for unmap.

Signed-off-by: Iuliana Prodan <iuliana.prodan@....com>
---
 drivers/crypto/caam/caamhash.c | 80 ++++++++++++------------------------------
 1 file changed, 22 insertions(+), 58 deletions(-)

diff --git a/drivers/crypto/caam/caamhash.c b/drivers/crypto/caam/caamhash.c
index 65399cb..3d6e978 100644
--- a/drivers/crypto/caam/caamhash.c
+++ b/drivers/crypto/caam/caamhash.c
@@ -597,8 +597,8 @@ static inline void ahash_unmap_ctx(struct device *dev,
 	ahash_unmap(dev, edesc, req, dst_len);
 }
 
-static void ahash_done(struct device *jrdev, u32 *desc, u32 err,
-		       void *context)
+static inline void ahash_done_cpy(struct device *jrdev, u32 *desc, u32 err,
+				  void *context, enum dma_data_direction dir)
 {
 	struct ahash_request *req = context;
 	struct ahash_edesc *edesc;
@@ -614,7 +614,7 @@ static void ahash_done(struct device *jrdev, u32 *desc, u32 err,
 	if (err)
 		ecode = caam_jr_strstatus(jrdev, err);
 
-	ahash_unmap_ctx(jrdev, edesc, req, digestsize, DMA_FROM_DEVICE);
+	ahash_unmap_ctx(jrdev, edesc, req, digestsize, dir);
 	memcpy(req->result, state->caam_ctx, digestsize);
 	kfree(edesc);
 
@@ -625,68 +625,20 @@ static void ahash_done(struct device *jrdev, u32 *desc, u32 err,
 	req->base.complete(&req->base, ecode);
 }
 
-static void ahash_done_bi(struct device *jrdev, u32 *desc, u32 err,
-			    void *context)
+static void ahash_done(struct device *jrdev, u32 *desc, u32 err,
+		       void *context)
 {
-	struct ahash_request *req = context;
-	struct ahash_edesc *edesc;
-	struct crypto_ahash *ahash = crypto_ahash_reqtfm(req);
-	struct caam_hash_ctx *ctx = crypto_ahash_ctx(ahash);
-	struct caam_hash_state *state = ahash_request_ctx(req);
-	int digestsize = crypto_ahash_digestsize(ahash);
-	int ecode = 0;
-
-	dev_dbg(jrdev, "%s %d: err 0x%x\n", __func__, __LINE__, err);
-
-	edesc = container_of(desc, struct ahash_edesc, hw_desc[0]);
-	if (err)
-		ecode = caam_jr_strstatus(jrdev, err);
-
-	ahash_unmap_ctx(jrdev, edesc, req, ctx->ctx_len, DMA_BIDIRECTIONAL);
-	switch_buf(state);
-	kfree(edesc);
-
-	print_hex_dump_debug("ctx@"__stringify(__LINE__)": ",
-			     DUMP_PREFIX_ADDRESS, 16, 4, state->caam_ctx,
-			     ctx->ctx_len, 1);
-	if (req->result)
-		print_hex_dump_debug("result@"__stringify(__LINE__)": ",
-				     DUMP_PREFIX_ADDRESS, 16, 4, req->result,
-				     digestsize, 1);
-
-	req->base.complete(&req->base, ecode);
+	ahash_done_cpy(jrdev, desc, err, context, DMA_FROM_DEVICE);
 }
 
 static void ahash_done_ctx_src(struct device *jrdev, u32 *desc, u32 err,
 			       void *context)
 {
-	struct ahash_request *req = context;
-	struct ahash_edesc *edesc;
-	struct crypto_ahash *ahash = crypto_ahash_reqtfm(req);
-	int digestsize = crypto_ahash_digestsize(ahash);
-	struct caam_hash_state *state = ahash_request_ctx(req);
-	struct caam_hash_ctx *ctx = crypto_ahash_ctx(ahash);
-	int ecode = 0;
-
-	dev_dbg(jrdev, "%s %d: err 0x%x\n", __func__, __LINE__, err);
-
-	edesc = container_of(desc, struct ahash_edesc, hw_desc[0]);
-	if (err)
-		ecode = caam_jr_strstatus(jrdev, err);
-
-	ahash_unmap_ctx(jrdev, edesc, req, digestsize, DMA_BIDIRECTIONAL);
-	memcpy(req->result, state->caam_ctx, digestsize);
-	kfree(edesc);
-
-	print_hex_dump_debug("ctx@"__stringify(__LINE__)": ",
-			     DUMP_PREFIX_ADDRESS, 16, 4, state->caam_ctx,
-			     ctx->ctx_len, 1);
-
-	req->base.complete(&req->base, ecode);
+	ahash_done_cpy(jrdev, desc, err, context, DMA_BIDIRECTIONAL);
 }
 
-static void ahash_done_ctx_dst(struct device *jrdev, u32 *desc, u32 err,
-			       void *context)
+static inline void ahash_done_switch(struct device *jrdev, u32 *desc, u32 err,
+				     void *context, enum dma_data_direction dir)
 {
 	struct ahash_request *req = context;
 	struct ahash_edesc *edesc;
@@ -702,7 +654,7 @@ static void ahash_done_ctx_dst(struct device *jrdev, u32 *desc, u32 err,
 	if (err)
 		ecode = caam_jr_strstatus(jrdev, err);
 
-	ahash_unmap_ctx(jrdev, edesc, req, ctx->ctx_len, DMA_FROM_DEVICE);
+	ahash_unmap_ctx(jrdev, edesc, req, ctx->ctx_len, dir);
 	switch_buf(state);
 	kfree(edesc);
 
@@ -717,6 +669,18 @@ static void ahash_done_ctx_dst(struct device *jrdev, u32 *desc, u32 err,
 	req->base.complete(&req->base, ecode);
 }
 
+static void ahash_done_bi(struct device *jrdev, u32 *desc, u32 err,
+			  void *context)
+{
+	ahash_done_switch(jrdev, desc, err, context, DMA_BIDIRECTIONAL);
+}
+
+static void ahash_done_ctx_dst(struct device *jrdev, u32 *desc, u32 err,
+			       void *context)
+{
+	ahash_done_switch(jrdev, desc, err, context, DMA_FROM_DEVICE);
+}
+
 /*
  * Allocate an enhanced descriptor, which contains the hardware descriptor
  * and space for hardware scatter table containing sg_num entries.
-- 
2.1.0