linux-kernel - [Patch v2 3/6] drivers: crypto: qce: Enable support for crypto engine on sdm845.

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Thu, 19 Nov 2020 10:52:30 -0500
From:   Thara Gopinath <thara.gopinath@...aro.org>
To:     agross@...nel.org, bjorn.andersson@...aro.org,
        herbert@...dor.apana.org.au, davem@...emloft.net,
        robh+dt@...nel.org, sboyd@...nel.org, mturquette@...libre.com
Cc:     linux-arm-msm@...r.kernel.org, linux-crypto@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-clk@...r.kernel.org
Subject: [Patch v2 3/6] drivers: crypto: qce: Enable support for crypto engine on sdm845.

Add support Qualcomm Crypto Engine accelerated encryption and
authentication algorithms on sdm845.

Reviewed-by: Bjorn Andersson <bjorn.andersson@...aro.org>
Signed-off-by: Thara Gopinath <thara.gopinath@...aro.org>
---
 drivers/crypto/qce/core.c | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

diff --git a/drivers/crypto/qce/core.c b/drivers/crypto/qce/core.c
index ea616b7259ae..67c3ca13e55b 100644
--- a/drivers/crypto/qce/core.c
+++ b/drivers/crypto/qce/core.c
@@ -160,7 +160,21 @@ static int qce_check_version(struct qce_device *qce)
 		return -ENODEV;
 
 	qce->burst_size = QCE_BAM_BURST_SIZE;
-	qce->pipe_pair_id = 1;
+
+	/*
+	 * Rx and tx pipes are treated as a pair inside CE.
+	 * Pipe pair number depends on the actual BAM dma pipe
+	 * that is used for transfers. The BAM dma pipes are passed
+	 * from the device tree and used to derive the pipe pair
+	 * id in the CE driver as follows.
+	 * 	BAM dma pipes(rx, tx)		CE pipe pair id
+	 *		0,1				0
+	 *		2,3				1
+	 *		4,5				2
+	 *		6,7				3
+	 *		...
+	 */
+	qce->pipe_pair_id = qce->dma.rxchan->chan_id >> 1;
 
 	dev_dbg(qce->dev, "Crypto device found, version %d.%d.%d\n",
 		major, minor, step);
@@ -261,6 +275,7 @@ static int qce_crypto_remove(struct platform_device *pdev)
 
 static const struct of_device_id qce_crypto_of_match[] = {
 	{ .compatible = "qcom,crypto-v5.1", },
+	{ .compatible = "qcom,crypto-v5.4", },
 	{}
 };
 MODULE_DEVICE_TABLE(of, qce_crypto_of_match);
-- 
2.25.1