[PATCH v4 09/11] crypto: qce - Add support for lock/unlock in skcipher
From: Md Sadre Alam
Date: Mon Sep 09 2024 - 05:29:59 EST
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@xxxxxxxxxxx>
---
Change in [v4]
* No change
Change in [v3]
* Move qce_bam_release_lock() after qca_dma_terminate_all()
api
Change in [v2]
* Added qce_bam_acquire_lock() and qce_bam_release_lock()
api for skcipher
Change in [v1]
* This patch was not included in [v1]
drivers/crypto/qce/skcipher.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/crypto/qce/skcipher.c b/drivers/crypto/qce/skcipher.c
index 5b493fdc1e74..a4e09562b5f4 100644
--- a/drivers/crypto/qce/skcipher.c
+++ b/drivers/crypto/qce/skcipher.c
@@ -52,6 +52,8 @@ static void qce_skcipher_done(void *data)
sg_free_table(&rctx->dst_tbl);
+ qce_bam_release_lock(qce);
+
error = qce_check_status(qce, &status);
if (error < 0)
dev_dbg(qce->dev, "skcipher operation error (%x)\n", status);
@@ -82,6 +84,8 @@ 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);
--
2.34.1