crypto: ccree - Set DMA alignment explicitly

This driver has been implicitly relying on kmalloc alignment
to be sufficient for DMA.  This may no longer be the case with
upcoming arm64 changes.

This patch changes it to explicitly request DMA alignment from
the Crypto API.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/ccree/cc_buffer_mgr.c

@@ -52,7 +52,7 @@ static inline char *cc_dma_buf_type(enum cc_req_dma_buf_type type)
 static void cc_copy_mac(struct device *dev, struct aead_request *req,
 			enum cc_sg_cpy_direct dir)
 {
-	struct aead_req_ctx *areq_ctx = aead_request_ctx(req);
+	struct aead_req_ctx *areq_ctx = aead_request_ctx_dma(req);
 	u32 skip = req->assoclen + req->cryptlen;
 
 	cc_copy_sg_portion(dev, areq_ctx->backup_mac, req->src,
@@ -456,7 +456,7 @@ int cc_map_cipher_request(struct cc_drvdata *drvdata, void *ctx,
 
 void cc_unmap_aead_request(struct device *dev, struct aead_request *req)
 {
-	struct aead_req_ctx *areq_ctx = aead_request_ctx(req);
+	struct aead_req_ctx *areq_ctx = aead_request_ctx_dma(req);
 	unsigned int hw_iv_size = areq_ctx->hw_iv_size;
 	struct cc_drvdata *drvdata = dev_get_drvdata(dev);
 	int src_direction = (req->src != req->dst ? DMA_TO_DEVICE : DMA_BIDIRECTIONAL);
@@ -546,7 +546,7 @@ static int cc_aead_chain_iv(struct cc_drvdata *drvdata,
 			    struct buffer_array *sg_data,
 			    bool is_last, bool do_chain)
 {
-	struct aead_req_ctx *areq_ctx = aead_request_ctx(req);
+	struct aead_req_ctx *areq_ctx = aead_request_ctx_dma(req);
 	unsigned int hw_iv_size = areq_ctx->hw_iv_size;
 	struct device *dev = drvdata_to_dev(drvdata);
 	gfp_t flags = cc_gfp_flags(&req->base);
@@ -586,7 +586,7 @@ static int cc_aead_chain_assoc(struct cc_drvdata *drvdata,
 			       struct buffer_array *sg_data,
 			       bool is_last, bool do_chain)
 {
-	struct aead_req_ctx *areq_ctx = aead_request_ctx(req);
+	struct aead_req_ctx *areq_ctx = aead_request_ctx_dma(req);
 	int rc = 0;
 	int mapped_nents = 0;
 	struct device *dev = drvdata_to_dev(drvdata);
@@ -652,7 +652,7 @@ static int cc_aead_chain_assoc(struct cc_drvdata *drvdata,
 static void cc_prepare_aead_data_dlli(struct aead_request *req,
 				      u32 *src_last_bytes, u32 *dst_last_bytes)
 {
-	struct aead_req_ctx *areq_ctx = aead_request_ctx(req);
+	struct aead_req_ctx *areq_ctx = aead_request_ctx_dma(req);
 	enum drv_crypto_direction direct = areq_ctx->gen_ctx.op_type;
 	unsigned int authsize = areq_ctx->req_authsize;
 	struct scatterlist *sg;
@@ -678,7 +678,7 @@ static void cc_prepare_aead_data_mlli(struct cc_drvdata *drvdata,
 				      u32 *src_last_bytes, u32 *dst_last_bytes,
 				      bool is_last_table)
 {
-	struct aead_req_ctx *areq_ctx = aead_request_ctx(req);
+	struct aead_req_ctx *areq_ctx = aead_request_ctx_dma(req);
 	enum drv_crypto_direction direct = areq_ctx->gen_ctx.op_type;
 	unsigned int authsize = areq_ctx->req_authsize;
 	struct device *dev = drvdata_to_dev(drvdata);
@@ -790,7 +790,7 @@ static int cc_aead_chain_data(struct cc_drvdata *drvdata,
 			      struct buffer_array *sg_data,
 			      bool is_last_table, bool do_chain)
 {
-	struct aead_req_ctx *areq_ctx = aead_request_ctx(req);
+	struct aead_req_ctx *areq_ctx = aead_request_ctx_dma(req);
 	struct device *dev = drvdata_to_dev(drvdata);
 	enum drv_crypto_direction direct = areq_ctx->gen_ctx.op_type;
 	unsigned int authsize = areq_ctx->req_authsize;
@@ -895,7 +895,7 @@ static int cc_aead_chain_data(struct cc_drvdata *drvdata,
 static void cc_update_aead_mlli_nents(struct cc_drvdata *drvdata,
 				      struct aead_request *req)
 {
-	struct aead_req_ctx *areq_ctx = aead_request_ctx(req);
+	struct aead_req_ctx *areq_ctx = aead_request_ctx_dma(req);
 	u32 curr_mlli_size = 0;
 
 	if (areq_ctx->assoc_buff_type == CC_DMA_BUF_MLLI) {
@@ -945,7 +945,7 @@ static void cc_update_aead_mlli_nents(struct cc_drvdata *drvdata,
 
 int cc_map_aead_request(struct cc_drvdata *drvdata, struct aead_request *req)
 {
-	struct aead_req_ctx *areq_ctx = aead_request_ctx(req);
+	struct aead_req_ctx *areq_ctx = aead_request_ctx_dma(req);
 	struct mlli_params *mlli_params = &areq_ctx->mlli_params;
 	struct device *dev = drvdata_to_dev(drvdata);
 	struct buffer_array sg_data;