linux-kernel - [PATCH v12 3/6] firmware: xilinx: Add query data API

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:   Wed, 12 Sep 2018 12:38:37 -0700
From:   Jolly Shah <jolly.shah@...inx.com>
To:     <olof@...om.net>, <michal.simek@...inx.com>, <arm@...nel.org>
CC:     <rajanv@...inx.com>, <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, Jolly Shah <jollys@...inx.com>
Subject: [PATCH v12 3/6] firmware: xilinx: Add query data API

From: Rajan Vaja <rajanv@...inx.com>

Add ZynqMP firmware query data API to query platform
specific information(clocks, pins) from firmware.

Signed-off-by: Rajan Vaja <rajanv@...inx.com>
Signed-off-by: Jolly Shah <jollys@...inx.com>
---
 drivers/firmware/xilinx/zynqmp.c     | 14 ++++++++++++++
 include/linux/firmware/xlnx-zynqmp.h | 20 ++++++++++++++++++++
 2 files changed, 34 insertions(+)

diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
index 5bf64ac..2a333c0 100644
--- a/drivers/firmware/xilinx/zynqmp.c
+++ b/drivers/firmware/xilinx/zynqmp.c
@@ -241,8 +241,22 @@ static int get_set_conduit_method(struct device_node *np)
 	return 0;
 }
 
+/**
+ * zynqmp_pm_query_data() - Get query data from firmware
+ * @qdata:	Variable to the zynqmp_pm_query_data structure
+ * @out:	Returned output value
+ *
+ * Return: Returns status, either success or error+reason
+ */
+static int zynqmp_pm_query_data(struct zynqmp_pm_query_data qdata, u32 *out)
+{
+	return zynqmp_pm_invoke_fn(PM_QUERY_DATA, qdata.qid, qdata.arg1,
+				   qdata.arg2, qdata.arg3, out);
+}
+
 static const struct zynqmp_eemi_ops eemi_ops = {
 	.get_api_version = zynqmp_pm_get_api_version,
+	.query_data = zynqmp_pm_query_data,
 };
 
 /**
diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h
index cb63bed..287f42c 100644
--- a/include/linux/firmware/xlnx-zynqmp.h
+++ b/include/linux/firmware/xlnx-zynqmp.h
@@ -34,6 +34,7 @@
 
 enum pm_api_id {
 	PM_GET_API_VERSION = 1,
+	PM_QUERY_DATA = 35,
 };
 
 /* PMU-FW return status codes */
@@ -47,8 +48,27 @@ enum pm_ret_status {
 	XST_PM_ABORT_SUSPEND,
 };
 
+enum pm_query_id {
+	PM_QID_INVALID,
+};
+
+/**
+ * struct zynqmp_pm_query_data - PM query data
+ * @qid:	query ID
+ * @arg1:	Argument 1 of query data
+ * @arg2:	Argument 2 of query data
+ * @arg3:	Argument 3 of query data
+ */
+struct zynqmp_pm_query_data {
+	u32 qid;
+	u32 arg1;
+	u32 arg2;
+	u32 arg3;
+};
+
 struct zynqmp_eemi_ops {
 	int (*get_api_version)(u32 *version);
+	int (*query_data)(struct zynqmp_pm_query_data qdata, u32 *out);
 };
 
 #if IS_REACHABLE(CONFIG_ARCH_ZYNQMP)
-- 
2.7.4