nvidia-gpu: add Power Sensor PeakReading Property
Add support for Sensor Properties PeakReading and PeakRedingTime.
Current Limitation -
The ResetMetrics action is currently not supported for Redfish URIs in
bmcweb. As a result, the ability to clear PeakReading values for GPU
Power Sensors has not been implemented.
Future Consideration -
If ResetMetrics action support is added to bmcweb in the future, the
corresponding functionality will also need to be implemented in the
dbus-sensor application to ensure full compatibility.
Tested: Build an image for gb200nvl-obmc machine with the following
patches cherry picked. This patches are needed to enable the mctp stack.
https://gerrit.openbmc.org/c/openbmc/openbmc/+/79422
```
root@gb200nvl-obmc:~# busctl introspect xyz.openbmc_project.GpuSensor /xyz/openbmc_project/sensors/power/NVIDIA_GB200_GPU_0_Power_0
NAME TYPE SIGNATURE RESULT/VALUE FLAGS
org.freedesktop.DBus.Introspectable interface - - -
.Introspect method - s -
org.freedesktop.DBus.Peer interface - - -
.GetMachineId method - s -
.Ping method - - -
org.freedesktop.DBus.Properties interface - - -
.Get method ss v -
.GetAll method s a{sv} -
.Set method ssv - -
.PropertiesChanged signal sa{sv}as - -
xyz.openbmc_project.Association.Definitions interface - - -
.Associations property a(sss) 1 "chassis" "all_sensors" "/xyz/openb... emits-change
xyz.openbmc_project.Sensor.Value interface - - -
.MaxValue property d 5000 emits-change
.MinValue property d 0 emits-change
.Unit property s "xyz.openbmc_project.Sensor.Value.Uni... emits-change
.Value property d 29.194 emits-change writable
xyz.openbmc_project.Sensor.ValueMutability interface - - -
.Mutable property b true emits-change
xyz.openbmc_project.State.Decorator.Availability interface - - -
.Available property b true emits-change writable
xyz.openbmc_project.State.Decorator.OperationalStatus interface - - -
.Functional property b true emits-change
xyz.openbmc_project.Telemetry.Report interface - - -
.Readings property (ta(ssdt)) 0 1 "PeakReading" "" 80.933 0 emits-change
```
Change-Id: I0a4f7eb0a5db688f32bf80954839140da9bb7e2a
Signed-off-by: Harshit Aghera <haghera@nvidia.com>
diff --git a/src/nvidia-gpu/NvidiaGpuPowerPeakReading.hpp b/src/nvidia-gpu/NvidiaGpuPowerPeakReading.hpp
new file mode 100644
index 0000000..02ba104
--- /dev/null
+++ b/src/nvidia-gpu/NvidiaGpuPowerPeakReading.hpp
@@ -0,0 +1,61 @@
+/*
+ * SPDX-FileCopyrightText: Copyright (c) 2024-2025 NVIDIA CORPORATION &
+ * AFFILIATES. All rights reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#pragma once
+
+#include "MctpRequester.hpp"
+
+#include <NvidiaGpuMctpVdm.hpp>
+#include <sdbusplus/asio/object_server.hpp>
+
+#include <array>
+#include <cstdint>
+#include <memory>
+#include <string>
+#include <tuple>
+#include <vector>
+
+constexpr uint8_t gpuPeakPowerSensorId{0};
+
+// GPU Power Sensor Averaging Interval in seconds, 0 implies default
+constexpr uint8_t gpuPowerAveragingIntervalInSec{0};
+
+struct NvidiaGpuPowerPeakReading
+{
+ public:
+ NvidiaGpuPowerPeakReading(mctp::MctpRequester& mctpRequester,
+ const std::string& name, uint8_t eid,
+ uint8_t sensorId,
+ sdbusplus::asio::object_server& objectServer);
+
+ ~NvidiaGpuPowerPeakReading();
+
+ void update();
+
+ private:
+ void processResponse(int sendRecvMsgResult);
+
+ uint8_t eid{};
+
+ uint8_t sensorId;
+
+ uint8_t averagingInterval{gpuPowerAveragingIntervalInSec};
+
+ std::tuple<
+ uint64_t,
+ std::vector<std::tuple<std::string, std::string, double, uint64_t>>>
+ readings;
+
+ mctp::MctpRequester& mctpRequester;
+
+ sdbusplus::asio::object_server& objectServer;
+
+ std::array<uint8_t, sizeof(gpu::GetPowerDrawRequest)> request{};
+
+ std::array<uint8_t, sizeof(gpu::GetPowerDrawResponse)> response{};
+
+ std::shared_ptr<sdbusplus::asio::dbus_interface> telemetryReportInterface;
+};