Signed-off-by: Phil Sutter <phil.sutter@xxxxxxxxxxxx>
---
drivers/crypto/mv_cesa.c | 40 +++++++++++++++++++++++++++++-----------
1 files changed, 29 insertions(+), 11 deletions(-)
diff --git a/drivers/crypto/mv_cesa.c b/drivers/crypto/mv_cesa.c
index cdbc82e..4b08137 100644
--- a/drivers/crypto/mv_cesa.c
+++ b/drivers/crypto/mv_cesa.c
@@ -161,8 +161,10 @@ struct mv_req_hash_ctx {
int first_hash; /* marks that we don't have previous state */
int last_chunk; /* marks that this is the 'final' request */
int extra_bytes; /* unprocessed bytes in buffer */
+ int digestsize; /* size of the digest */
enum hash_op op;
int count_add;
+ dma_addr_t result_dma;
};
static void mv_completion_timer_callback(unsigned long unused)
@@ -499,9 +501,17 @@ static void mv_init_hash_config(struct ahash_request *req)
mv_dma_separator();
- /* XXX: this fixes some ugly register fuckup bug in the tdma engine
- * (no need to sync since the data is ignored anyway) */
- mv_dma_memcpy(cpg->sa_sram_dma, cpg->sram_phys + SRAM_CONFIG, 1);
+ if (req->result) {
+ req_ctx->result_dma = dma_map_single(cpg->dev, req->result,
+ req_ctx->digestsize, DMA_FROM_DEVICE);
+ mv_dma_memcpy(req_ctx->result_dma,
+ cpg->sram_phys + SRAM_DIGEST_BUF, req_ctx->digestsize);
+ } else {
+ /* XXX: this fixes some ugly register fuckup bug in the tdma engine
+ * (no need to sync since the data is ignored anyway) */
+ mv_dma_memcpy(cpg->sa_sram_dma,
+ cpg->sram_phys + SRAM_CONFIG, 1);
+ }
/* GO */
mv_setup_timer();
@@ -548,9 +558,17 @@ static void mv_update_hash_config(void)
mv_dma_separator();
- /* XXX: this fixes some ugly register fuckup bug in the tdma engine
- * (no need to sync since the data is ignored anyway) */
- mv_dma_memcpy(cpg->sa_sram_dma, cpg->sram_phys + SRAM_CONFIG, 1);
+ if (req->result) {
+ req_ctx->result_dma = dma_map_single(cpg->dev, req->result,
+ req_ctx->digestsize, DMA_FROM_DEVICE);
+ mv_dma_memcpy(req_ctx->result_dma,
+ cpg->sram_phys + SRAM_DIGEST_BUF, req_ctx->digestsize);
+ } else {
+ /* XXX: this fixes some ugly register fuckup bug in the tdma engine
+ * (no need to sync since the data is ignored anyway) */
+ mv_dma_memcpy(cpg->sa_sram_dma,
+ cpg->sram_phys + SRAM_CONFIG, 1);
+ }
/* GO */
mv_setup_timer();
@@ -617,11 +635,10 @@ static void mv_hash_algo_completion(void)
copy_src_to_buf(&cpg->p, ctx->buffer, ctx->extra_bytes);
if (likely(ctx->last_chunk)) {
- if (likely(ctx->count <= MAX_HW_HASH_SIZE)) {
- memcpy(req->result, cpg->sram + SRAM_DIGEST_BUF,
- crypto_ahash_digestsize(crypto_ahash_reqtfm
- (req)));
- } else {
+ dma_unmap_single(cpg->dev, ctx->result_dma,
+ ctx->digestsize, DMA_FROM_DEVICE);
+
+ if (unlikely(ctx->count > MAX_HW_HASH_SIZE)) {
mv_save_digest_state(ctx);
mv_hash_final_fallback(req);
}
@@ -719,6 +736,7 @@ static void mv_start_new_hash_req(struct ahash_request *req)
memset(p, 0, sizeof(struct req_progress));
hw_bytes = req->nbytes + ctx->extra_bytes;
old_extra_bytes = ctx->extra_bytes;
+ ctx->digestsize = crypto_ahash_digestsize(crypto_ahash_reqtfm(req));
ctx->extra_bytes = hw_bytes % SHA1_BLOCK_SIZE;
if (ctx->extra_bytes != 0
--
1.7.3.4
--
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