linux-kernel - [PATCH 07/11] crypto: qce - Add LOCK and UNLOCK flag support

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Message-Id: <20231214114239.2635325-8-quic_mdalam@quicinc.com>
Date:   Thu, 14 Dec 2023 17:12:35 +0530
From:   Md Sadre Alam <quic_mdalam@...cinc.com>
To:     thara.gopinath@...il.com, herbert@...dor.apana.org.au,
        davem@...emloft.net, agross@...nel.org, andersson@...nel.org,
        konrad.dybcio@...aro.org, vkoul@...nel.org,
        linux-crypto@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org, dmaengine@...r.kernel.org,
        quic_srichara@...cinc.com, quic_varada@...cinc.com
Cc:     quic_mdalam@...cinc.com
Subject: [PATCH 07/11] crypto: qce - Add LOCK and UNLOCK flag support

Add LOCK and UNLOCK flag support while preapring
command descriptor for writing crypto register.

Signed-off-by: Md Sadre Alam <quic_mdalam@...cinc.com>
---
 drivers/crypto/qce/dma.c | 7 ++++++-
 drivers/crypto/qce/dma.h | 2 ++
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/crypto/qce/dma.c b/drivers/crypto/qce/dma.c
index 85c8d4107afa..bda60e6bc4b3 100644
--- a/drivers/crypto/qce/dma.c
+++ b/drivers/crypto/qce/dma.c
@@ -71,7 +71,12 @@ int qce_submit_cmd_desc(struct qce_device *qce, unsigned long flags)
 	unsigned long desc_flags;
 	int ret = 0;
 
-	desc_flags = DMA_PREP_CMD;
+	if (flags & QCE_DMA_DESC_FLAG_LOCK)
+		desc_flags = DMA_PREP_CMD | DMA_PREP_LOCK;
+	else if (flags & QCE_DMA_DESC_FLAG_UNLOCK)
+		desc_flags = DMA_PREP_CMD | DMA_PREP_UNLOCK;
+	else
+		desc_flags = DMA_PREP_CMD;
 
 	/* For command descriptor always use consumer pipe
 	 * it recomended as per HPG
diff --git a/drivers/crypto/qce/dma.h b/drivers/crypto/qce/dma.h
index f10991590b3f..ad8a18a720b1 100644
--- a/drivers/crypto/qce/dma.h
+++ b/drivers/crypto/qce/dma.h
@@ -19,6 +19,8 @@
 #define QCE_BAM_CMD_ELEMENT_SIZE       64
 #define QCE_DMA_DESC_FLAG_BAM_NWD      (0x0004)
 #define QCE_MAX_REG_READ               8
+#define QCE_DMA_DESC_FLAG_LOCK          (0x0002)
+#define QCE_DMA_DESC_FLAG_UNLOCK        (0x0001)
 
 struct qce_result_dump {
 	u32 auth_iv[QCE_AUTHIV_REGS_CNT];
-- 
2.34.1