diff mbox series

[09/11] crypto: qce - Add support for lock/unlock in skcipher

Message ID 20231214114239.2635325-10-quic_mdalam@quicinc.com (mailing list archive)
State Changes Requested
Delegated to: Herbert Xu
Headers show
Series Add cmd descriptor support | expand

Commit Message

Md Sadre Alam Dec. 14, 2023, 11:42 a.m. UTC 
Add support for lock/unlock on bam pipe in skcipher.
If multiple EE's(Execution Environment) try to access
the same crypto engine then before accessing the crypto
engine EE's has to lock the bam pipe and then submit the
request to crypto engine. Once request done then EE's has
to unlock the bam pipe so that others EE's can access the
crypto engine.

Signed-off-by: Md Sadre Alam <quic_mdalam@quicinc.com>
---
 drivers/crypto/qce/skcipher.c | 4 ++++
 1 file changed, 4 insertions(+)
diff mbox series

Patch

diff --git a/drivers/crypto/qce/skcipher.c b/drivers/crypto/qce/skcipher.c
index fa7ee5db9aa0..c74df30e8e31 100644
--- a/drivers/crypto/qce/skcipher.c
+++ b/drivers/crypto/qce/skcipher.c
@@ -42,6 +42,8 @@  static void qce_skcipher_done(void *data)
 	dir_src = diff_dst ? DMA_TO_DEVICE : DMA_BIDIRECTIONAL;
 	dir_dst = diff_dst ? DMA_FROM_DEVICE : DMA_BIDIRECTIONAL;
 
+	qce_bam_release_lock(qce);
+
 	error = qce_dma_terminate_all(&qce->dma);
 	if (error)
 		dev_dbg(qce->dev, "skcipher dma termination error (%d)\n",
@@ -94,6 +96,8 @@  qce_skcipher_async_req_handle(struct crypto_async_request *async_req)
 	dir_src = diff_dst ? DMA_TO_DEVICE : DMA_BIDIRECTIONAL;
 	dir_dst = diff_dst ? DMA_FROM_DEVICE : DMA_BIDIRECTIONAL;
 
+	qce_bam_acquire_lock(qce);
+
 	rctx->src_nents = sg_nents_for_len(req->src, req->cryptlen);
 	if (diff_dst)
 		rctx->dst_nents = sg_nents_for_len(req->dst, req->cryptlen);