[PATCH v2 12/16] crypto: qce - Add support for lock/unlock in sha

Md Sadre Alam
2024-08-15T08:57:57Z

Add support for lock/unlock on bam pipe in sha.
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>
---

Change in [v2]

* Removed unmap_sg() from crypto done api

Change in [v1]

* Added qce_bam_acquire_lock and qce_bam_release_lock
api in sha

drivers/crypto/qce/sha.c | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/drivers/crypto/qce/sha.c b/drivers/crypto/qce/sha.c
index fc72af8aa9a7..abfa63ff18d7 100644
--- a/drivers/crypto/qce/sha.c
+++ b/drivers/crypto/qce/sha.c
@@ -60,6 +60,8 @@ static void qce_ahash_done(void *data)
rctx->byte_count[0] = cpu_to_be32(result->auth_byte_count[0]);
rctx->byte_count[1] = cpu_to_be32(result->auth_byte_count[1]);

+ qce_bam_release_lock(qce);
+
error = qce_check_status(qce, &status);
if (error < 0)
dev_dbg(qce->dev, "ahash operation error (%x)\n", status);
@@ -90,6 +92,8 @@ static int qce_ahash_async_req_handle(struct crypto_async_request *async_req)
rctx->authklen = AES_KEYSIZE_128;
}

+ qce_bam_acquire_lock(qce);
+
rctx->src_nents = sg_nents_for_len(req->src, req->nbytes);
if (rctx->src_nents < 0) {
dev_err(qce->dev, "Invalid numbers of src SG.\n");
--
2.34.1