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From: Kalyani Akula <kalyani.akula@xilinx.com>
To: <herbert@gondor.apana.org.au>, <davem@davemloft.net>,
	<linux-crypto@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Cc: Kalyani Akula <kalyania@xilinx.com>,
	Sarat Chand Savitala <saratcha@xilinx.com>,
	Kalyani Akula <kalyani.akula@xilinx.com>
Subject: [RFC PATCH 3/5] firmware: xilinx: Add ZynqMP aes API for AES functionality
Date: Thu, 17 Jan 2019 12:32:19 +0530	[thread overview]
Message-ID: <1547708541-23730-4-git-send-email-kalyani.akula@xilinx.com> (raw)
In-Reply-To: <1547708541-23730-1-git-send-email-kalyani.akula@xilinx.com>

Add ZynqMP firmware AES API to perform encryption/decryption
of given data.

Signed-off-by: Kalyani Akula <kalyani.akula@xilinx.com>
---
 drivers/firmware/xilinx/zynqmp.c     | 24 ++++++++++++++++++++++++
 include/linux/firmware/xlnx-zynqmp.h |  2 ++
 2 files changed, 26 insertions(+)

diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
index 9a1c72a..332f98c1 100644
--- a/drivers/firmware/xilinx/zynqmp.c
+++ b/drivers/firmware/xilinx/zynqmp.c
@@ -469,6 +469,29 @@ static int zynqmp_pm_ioctl(u32 node_id, u32 ioctl_id, u32 arg1, u32 arg2,
 				   arg1, arg2, out);
 }
 
+/**
+ * zynqmp_pm_aes - Access AES hardware to encrypt/decrypt the data using
+ * AES-GCM core.
+ * @address:	Address of the AesParams structure.
+ * @out:	Returned output value
+ *
+ * Return:	Returns status, either success or error code.
+ */
+static int zynqmp_pm_aes_engine(const u64 address, u32 *out)
+{
+	u32 ret_payload[PAYLOAD_ARG_CNT];
+	int ret;
+
+	if (!out)
+		return -EINVAL;
+
+	ret = zynqmp_pm_invoke_fn(PM_SECURE_AES, upper_32_bits(address),
+				  lower_32_bits(address),
+				  0, 0, ret_payload);
+	*out = ret_payload[1];
+	return ret;
+}
+
 static const struct zynqmp_eemi_ops eemi_ops = {
 	.get_api_version = zynqmp_pm_get_api_version,
 	.query_data = zynqmp_pm_query_data,
@@ -482,6 +505,7 @@ static int zynqmp_pm_ioctl(u32 node_id, u32 ioctl_id, u32 arg1, u32 arg2,
 	.clock_setparent = zynqmp_pm_clock_setparent,
 	.clock_getparent = zynqmp_pm_clock_getparent,
 	.ioctl = zynqmp_pm_ioctl,
+	.aes = zynqmp_pm_aes_engine,
 };
 
 /**
diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h
index 3c3c28e..815fa30 100644
--- a/include/linux/firmware/xlnx-zynqmp.h
+++ b/include/linux/firmware/xlnx-zynqmp.h
@@ -45,6 +45,7 @@ enum pm_api_id {
 	PM_CLOCK_GETRATE,
 	PM_CLOCK_SETPARENT,
 	PM_CLOCK_GETPARENT,
+	PM_SECURE_AES = 47,
 };
 
 /* PMU-FW return status codes */
@@ -102,6 +103,7 @@ struct zynqmp_eemi_ops {
 	int (*clock_setparent)(u32 clock_id, u32 parent_id);
 	int (*clock_getparent)(u32 clock_id, u32 *parent_id);
 	int (*ioctl)(u32 node_id, u32 ioctl_id, u32 arg1, u32 arg2, u32 *out);
+	int (*aes)(const u64 address, u32 *out);
 };
 
 #if IS_REACHABLE(CONFIG_ARCH_ZYNQMP)
-- 
1.9.5

  parent reply	other threads:[~2019-01-17  7:02 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-01-17  7:02 [RFC PATCH 0/5] Add Xilinx's ZynqMP AES driver support Kalyani Akula
2019-01-17  7:02 ` [RFC PATCH 1/5] dt-bindings: crypto: Add bindings for ZynqMP AES driver Kalyani Akula
2019-01-17  7:02 ` [RFC PATCH 2/5] ARM64: zynqmp: Add Xilinix AES node Kalyani Akula
2019-01-17  7:02 ` Kalyani Akula [this message]
2019-01-17  7:02 ` [RFC PATCH 4/5] crypto: Adds user space interface for ALG_SET_KEY_TYPE Kalyani Akula
2019-01-17 11:34   ` Stephan Mueller
2019-04-22  9:17     ` Kalyani Akula
2019-04-24 18:30       ` Stephan Mueller
2019-05-08  9:31         ` Kalyani Akula
2019-05-24  6:50           ` Kalyani Akula
2019-05-24  7:19           ` Stephan Mueller
2019-05-24  7:19             ` Stephan Mueller
2019-06-10  5:20             ` Kalyani Akula
2019-06-10  6:35               ` Herbert Xu
2019-06-10  6:35                 ` Herbert Xu
2019-07-11  9:25                 ` Kalyani Akula
2019-07-11 11:10                   ` Herbert Xu
2019-07-11 11:10                     ` Herbert Xu
2019-01-17  7:02 ` [RFC PATCH 5/5] crypto: Add Xilinx AES driver Kalyani Akula
2019-01-17 10:33   ` Corentin Labbe

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