nvidia-gpu: Use common class for mctp endpoints

The common endpoint class should be used for send and receive.

Tested: Used by MctpRequester, tested on nvl32-obmc

Change-Id: I0060a66a5bcb4decfbe66

nvidia-gpu: Use common class for mctp endpoints

The common endpoint class should be used for send and receive.

Tested: Used by MctpRequester, tested on nvl32-obmc

Change-Id: I0060a66a5bcb4decfbe663d46ba88529e01e2209
Signed-off-by: Ed Tanous <etanous@nvidia.com>

show more ...

Remove redundant is_method_error() checks

The handlers registered through sdbusplus::bus::match_t only receive
D-Bus signals. Signal messages are never sent as method-error
replies, and therefore me

Remove redundant is_method_error() checks

The handlers registered through sdbusplus::bus::match_t only receive
D-Bus signals. Signal messages are never sent as method-error
replies, and therefore message.is_method_error() can never be true in
these callbacks.

This change removes all unnecessary is_method_error() checks from
signal handlers to simplify the code and avoid confusion.

Change-Id: I43e4a564c1bf401a5da9819dd201464e4a59c871
Signed-off-by: George Liu <liuxiwei@ieisystem.com>

show more ...

request maintainer role for nvidia-gpu

I have actively contributed to and reviewed patches for nvidia-gpu
application since its inception in May 2025. Additionally, I have
contributed and reviewed p

request maintainer role for nvidia-gpu

I have actively contributed to and reviewed patches for nvidia-gpu
application since its inception in May 2025. Additionally, I have
contributed and reviewed phosphor-dbus-interfaces and bmcweb patches
related to nvidia-gpu application.

Change-Id: I8eca227699b09c5cdb49495d5237a545c8609e86
Signed-off-by: Harshit Aghera <haghera@nvidia.com>

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Fix test build if nvidia-gpu is disabled

When nvidia-gpu is disabled, unit tests don't build because of the
shared gpusensor_sources variable. Make a quick fix to fix the build.
Going forward we ma

Fix test build if nvidia-gpu is disabled

When nvidia-gpu is disabled, unit tests don't build because of the
shared gpusensor_sources variable. Make a quick fix to fix the build.
Going forward we may need the option checking to be put into the sub
meson file rather than the top level, so that unit test deps can build
separately.

Change-Id: Ib87487fe15e80df44afbd9c3421163c6fbc16f74
Signed-off-by: Ed Tanous <etanous@nvidia.com>

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nvidia-gpu: fix GPU power PeakReading PDI usage

The GPU power peak reading, which uses the Telemetry.Report PDI, was
relying on a string ("PeakReading") to expose the reading. This string
is Redfish

nvidia-gpu: fix GPU power PeakReading PDI usage

The GPU power peak reading, which uses the Telemetry.Report PDI, was
relying on a string ("PeakReading") to expose the reading. This string
is Redfish specific. Instead, use the OperationType.Maximum enum defined
in the PDI. Bmcweb code can map this to PeakReading.

Tested: Build an image for nvl32-obmc machine with the following patches
cherry picked.

https://gerrit.openbmc.org/c/openbmc/openbmc/+/85490
https://gerrit.openbmc.org/c/openbmc/bmcweb/+/82449.

The patch cherry-picks the following patches that are currently under
review.

```
1. device tree
https://lore.kernel.org/all/aRbLqH8pLWCQryhu@molberding.nvidia.com/
2. mctpd patches
https://github.com/CodeConstruct/mctp/pull/85
3. u-boot changes
https://lore.kernel.org/openbmc/20251121-msx4-v1-0-fc0118b666c1@nvidia.com/T/#t
4. kernel changes as specified in the openbmc patch (for espi)
5. entity-manager changes
https://gerrit.openbmc.org/c/openbmc/entity-manager/+/85455
6. platform-init changes
https://gerrit.openbmc.org/c/openbmc/platform-init/+/85456
7. spi changes
https://lore.kernel.org/all/20251121-w25q01jv_fixup-v1-1-3d175050db73@nvidia.com/
```

The GPU Power PeakReading is correctly reported on DBus and on redfish.

Change-Id: I39b2b4987d845f878ffdedcfdb02cdfdc02a4499
Signed-off-by: Deepak Kodihalli <deepak.kodihalli.83@gmail.com>
Signed-off-by: Harshit Aghera <haghera@nvidia.com>

show more ...

nvidia-gpu: add support for ConnectX device

Add support to discover ConnectX devices and to populate PCIe interface
properties using Phosphor DBus Interface
xyz.openbmc_project.Inventory.Item.PCIeDe

nvidia-gpu: add support for ConnectX device

Add support to discover ConnectX devices and to populate PCIe interface
properties using Phosphor DBus Interface
xyz.openbmc_project.Inventory.Item.PCIeDevice.

ConnectX device has an integrated PCIe Switch. The patch uses
xyz.openbmc_project.Inventory.Item.PCIeSwitch PDI to define the PCIe
Switch resource.

Tested: Build an image for nvl32-obmc machine with the following patch
cherry picked.

https://gerrit.openbmc.org/c/openbmc/openbmc/+/85490

The patch cherry-picks the following patches that are currently under
review.

```
1. device tree
https://lore.kernel.org/all/aRbLqH8pLWCQryhu@molberding.nvidia.com/
2. mctpd patches
https://github.com/CodeConstruct/mctp/pull/85
3. u-boot changes
https://lore.kernel.org/openbmc/20251121-msx4-v1-0-fc0118b666c1@nvidia.com/T/#t
4. kernel changes as specified in the openbmc patch (for espi)
5. entity-manager changes
https://gerrit.openbmc.org/c/openbmc/entity-manager/+/85455
6. platform-init changes
https://gerrit.openbmc.org/c/openbmc/platform-init/+/85456
7. spi changes
https://lore.kernel.org/all/20251121-w25q01jv_fixup-v1-1-3d175050db73@nvidia.com/
```

```
root@nvl32-bmc:~# busctl tree xyz.openbmc_project.GpuSensor
`- /xyz
`- /xyz/openbmc_project
|- /xyz/openbmc_project/inventory
| `- /xyz/openbmc_project/inventory/pcie_devices
| |- /xyz/openbmc_project/inventory/pcie_devices/Nvidia_ConnectX_0
| |- /xyz/openbmc_project/inventory/pcie_devices/Nvidia_ConnectX_1
| |- /xyz/openbmc_project/inventory/pcie_devices/Nvidia_ConnectX_2
| `- /xyz/openbmc_project/inventory/pcie_devices/Nvidia_ConnectX_3

root@nvl32-obmc:~# busctl introspect xyz.openbmc_project.GpuSensor /xyz/openbmc_project/inventory/pcie_devices/Nvidia_ConnectX_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.Inventory.Item.PCIeDevice interface - - -
.GenerationInUse property s "xyz.openbmc_project.Inventory.Item.P... emits-change
.GenerationSupported property s "xyz.openbmc_project.Inventory.Item.P... emits-change
.LanesInUse property u 8 emits-change
.MaxLanes property u 16 emits-change
xyz.openbmc_project.Inventory.Item.PCIeSwitch interface - - -

$ curl -s -k -u 'root:0penBmc' https://${bmc_ip}/redfish/v1/Systems/system/PCIeDevices/Nvidia_ConnectX_0
{
"@odata.id": "/redfish/v1/Systems/system/PCIeDevices/Nvidia_ConnectX_0",
"@odata.type": "#PCIeDevice.v1_19_0.PCIeDevice",
"Id": "Nvidia_ConnectX_0",
"Name": "PCIe Device",
"PCIeFunctions": {
"@odata.id": "/redfish/v1/Systems/system/PCIeDevices/Nvidia_ConnectX_0/PCIeFunctions"
},
"PCIeInterface": {
"LanesInUse": 8,
"MaxLanes": 16,
"MaxPCIeType": "Gen5",
"PCIeType": "Gen5"
},
"Status": {
"Health": "OK",
"State": "Enabled"
}
}%
```

Change-Id: Id89ce8a298ebb16934e94efcb9ca4679f91a7b26
Signed-off-by: Harshit Aghera <haghera@nvidia.com>

show more ...

nvidia-gpu: move unused member

Move MaxMessageSize to where it's used

Change-Id: I6c45157e6e3e52672cab86c82af1ea45a3628d19
Signed-off-by: Ed Tanous <etanous@nvidia.com>

nvidia-gpu: Declare send endpoint on stack

There's no reason to store this small class in between transactions.
Just construct on stack as part of the send.

Tested: On last patchset in series

Chan

nvidia-gpu: Declare send endpoint on stack

There's no reason to store this small class in between transactions.
Just construct on stack as part of the send.

Tested: On last patchset in series

Change-Id: I00090942665f022bfa2552b9c31c7c3da000646b
Signed-off-by: Ed Tanous <etanous@nvidia.com>

show more ...

Change copyright to match linux foundation

We should use SPDX identifiers wherever possible for simplification.

Change-Id: If3a7bfe506d7fded64a3ac929cc643834b16303e
Signed-off-by: Ed Tanous <etanou

Change copyright to match linux foundation

We should use SPDX identifiers wherever possible for simplification.

Change-Id: If3a7bfe506d7fded64a3ac929cc643834b16303e
Signed-off-by: Ed Tanous <etanous@nvidia.com>

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nvidia-gpu: add TLimit sensor properties

Add support for DMTF Redfish properties ReadingBasis and Implementation
for GPU TLimit sensor [1].

Property Implementation for TLimit is set to Synthesized

nvidia-gpu: add TLimit sensor properties

Add support for DMTF Redfish properties ReadingBasis and Implementation
for GPU TLimit sensor [1].

Property Implementation for TLimit is set to Synthesized because the GPU
incorporates intelligent logic that determines the temperature delta
from the first thermal management software slowdown event. TLimit is
derived from other reported GPU sensors, such as HBM, Tavg, and others.

DBus Interface definition -
https://gerrit.openbmc.org/c/openbmc/phosphor-dbus-interfaces/+/81658

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

```
> curl -s -k -u 'root:0penBmc' https://10.137.203.137/redfish/v1/Chassis/NVIDIA_GB200_1/Sensors/temperature_NVIDIA_GB200_GPU_0_TEMP_1
{
"@odata.id": "/redfish/v1/Chassis/NVIDIA_GB200_1/Sensors/temperature_NVIDIA_GB200_GPU_0_TEMP_1",
"@odata.type": "#Sensor.v1_2_0.Sensor",
"Description": "Thermal Limit(TLIMIT) Temperature is the distance in deg C from the GPU temperature to the first throttle limit.",
"Id": "temperature_NVIDIA_GB200_GPU_0_TEMP_1",
"Implementation": "Synthesized",
"Name": "NVIDIA GB200 GPU 0 TEMP 1",
"Reading": 56.59375,
"ReadingBasis": "Headroom",
"ReadingRangeMax": 127.0,
"ReadingRangeMin": -128.0,
"ReadingType": "Temperature",
"ReadingUnits": "Cel",
"Status": {
"Health": "OK",
"State": "Enabled"
}
}%

root@gb200nvl-obmc:~# busctl introspect xyz.openbmc_project.GpuSensor /xyz/openbmc_project/sensors/temperature/NVIDIA_GB200_GPU_0_TEMP_1
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.Inventory.Item interface - - -
.PrettyName property s "Thermal Limit(TLIMIT) Temperature is... emits-change
xyz.openbmc_project.Sensor.Type interface - - -
.Implementation property s "xyz.openbmc_project.Sensor.Type.Impl... emits-change
.ReadingBasis property s "xyz.openbmc_project.Sensor.Type.Read... emits-change
xyz.openbmc_project.Sensor.Value interface - - -
.MaxValue property d 127 emits-change
.MinValue property d -128 emits-change
.Unit property s "xyz.openbmc_project.Sensor.Value.Uni... emits-change
.Value property d 56.6836 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
```

[1] : https://redfish.dmtf.org/schemas/v1/Sensor.v1_11_0.yaml

Change-Id: I1a16ced44c563794d561d26232a5e5fba041b875
Signed-off-by: Harshit Aghera <haghera@nvidia.com>

show more ...

nvidia-gpu: Fix thresholds for GPU_TEMP_1

Fixes thresholds for GPU_TEMP_1 to be upper critical, warning,
shutdown. Rather than lower critical, et al.

Change-Id: I580766288f3d27a48c75f00ea1dab13f028

nvidia-gpu: Fix thresholds for GPU_TEMP_1

Fixes thresholds for GPU_TEMP_1 to be upper critical, warning,
shutdown. Rather than lower critical, et al.

Change-Id: I580766288f3d27a48c75f00ea1dab13f0284bed6
Signed-off-by: Marc Olberding <molberding@nvidia.com>

show more ...

nvidia-gpu: Fix a number of object lifetime issues

Moves all subsensors and objects treated as shared_ptrs
to be using shared_from_this. This way, if there's an object lifetime
issue we don't segfau

nvidia-gpu: Fix a number of object lifetime issues

Moves all subsensors and objects treated as shared_ptrs
to be using shared_from_this. This way, if there's an object lifetime
issue we don't segfault.

Also separates construction and asio init for NvidiaSmaDevice
so that when we bind to this, its valid after we leave the ctor

Change-Id: I8e3115bc276d2e0eaac0b1dc9a9d2c46e6751d4b
Signed-off-by: Marc Olberding <molberding@nvidia.com>

show more ...

nvidia-gpu: NvidiaGpuDevice fix use after free

Fixes use after free for NvidiaGpuThresholds.
Moves the storage used for communication to be part
of the NvidiaGpuDevice class instead of ephemerally
p

nvidia-gpu: NvidiaGpuDevice fix use after free

Fixes use after free for NvidiaGpuThresholds.
Moves the storage used for communication to be part
of the NvidiaGpuDevice class instead of ephemerally
passed around through free functions

Also makes NvidiaGpuDevice inherit from
std::enable_shared_from_this

Testing: Issue found previous was coredumps
on nvl32-obmc. Asan discovered it was a use
after free in the shared pointer in ThermalLimits

Afterwards, no core dumps or issues reported by asan.
Ran on an nvl32-obmc model with 8 GPU's

Change-Id: I61b606f3a129499089718e7ec804926db5f22c64
Signed-off-by: Marc Olberding <molberding@nvidia.com>

show more ...

nvidia-gpu: deferred init for NvidiaGpuDevice

Adds deferred init for NvidiaGpuDevice, so that when we bind
to this, the this pointer is valid, i.e. after construction
is completed

Change-Id: I24a53

nvidia-gpu: deferred init for NvidiaGpuDevice

Adds deferred init for NvidiaGpuDevice, so that when we bind
to this, the this pointer is valid, i.e. after construction
is completed

Change-Id: I24a53d2ab9be1a2a4431368414a154b48347d2a2
Signed-off-by: Marc Olberding <molberding@nvidia.com>

show more ...

nvidia-gpu: Fix up buffering in MctpRequester

This change does a lot, for better or worse
1. Change MctpRequester to hold both buffers for send and receive
2. This requires changing the callback str

nvidia-gpu: Fix up buffering in MctpRequester

This change does a lot, for better or worse
1. Change MctpRequester to hold both buffers for send and receive
2. This requires changing the callback structure, so the reach is far
3. Changes error reporting to be through std::error_code
4. Collapses the QueuingRequeuster and Requeuster to be MctpRequeuster
5. Doing 4 gets rid of a level indirection and an extra unordered_map
6. Adds proper iid support, which is made significantly easier by 4/5
7. Fixes issues around expiry timer's where we would cancel the timer
for a given request whenever a new packet would come in to be sent.
This could cause lockup if a packet truly did time out and an
interleaved packet finished sending. This moves each queue
to have its own timer.

This fixes an issue where we were receiving buffers in from clients
and then binding them to receive_calls without ensuring that they
are the correct message, thus when receive was called, it was called
with the last bound buffer to async_receive_from. This would cause a
number of issues, ranging from incorrect device discovery results
to core dumps as well as incorrect sensor readings.

This change moves the receive and send buffers to be owned by
the MctpRequester, and a non-owning view is provided via
callback to the client. All existing clients just decode in place
given that buffer.

Tested: loaded onto nvl32-obmc. Correct number of sensors showed up
and the readings were nominal

Change-Id: I67c843691ca79e9fcccfa16df6d611918f25f6ca
Signed-off-by: Marc Olberding <molberding@nvidia.com>

show more ...

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 Redfi

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>

show more ...

Fix tidy build

This appears to be something tidy is wrong about. The suggestion of
adding math to the struct initializers appears to not compile.

Move the calculation of hysteresisTrigger and hyst

Fix tidy build

This appears to be something tidy is wrong about. The suggestion of
adding math to the struct initializers appears to not compile.

Move the calculation of hysteresisTrigger and hysteresisPublish into the
constructor body itself to avoid the warning.

Change-Id: I833fd12966c69c0e081692d6d40ba0cf1805ead1
Signed-off-by: Ed Tanous <etanous@nvidia.com>

show more ...

Move Nvidia gpu tests

These tests got caught in the refactor. Move these tests to the correct
location.

Change-Id: Ie8ec10e154d60cb4f24e1f45be36240863438f87
Signed-off-by: Ed Tanous <etanous@nvidi

Move Nvidia gpu tests

These tests got caught in the refactor. Move these tests to the correct
location.

Change-Id: Ie8ec10e154d60cb4f24e1f45be36240863438f87
Signed-off-by: Ed Tanous <etanous@nvidia.com>

show more ...

Remove main

Unit tests don't build if main is enabled.

Change-Id: I4c7210b2a72032d6e15729b5ab5e4201739dd602
Signed-off-by: Ed Tanous <etanous@nvidia.com>

Fix unit test warnings

These result in unsigned to signed comparisons that gtest and gcc in
some configurations warns on. Fix the literals to be unsigned.

Change-Id: I63e522ddefb4bf3a97c1e7b2f3c48

Fix unit test warnings

These result in unsigned to signed comparisons that gtest and gcc in
some configurations warns on. Fix the literals to be unsigned.

Change-Id: I63e522ddefb4bf3a97c1e7b2f3c48b159f03ae1f
Signed-off-by: Ed Tanous <etanous@nvidia.com>

show more ...

Nvidia-Gpu: Support to fetch model,revision inventory properties

Add capability to fetch model and revision from Nvidia GPU devices using
GET inventory command

Tested
Able to get model and revision

Nvidia-Gpu: Support to fetch model,revision inventory properties

Add capability to fetch model and revision from Nvidia GPU devices using
GET inventory command

Tested
Able to get model and revision info from the GPU

```
busctl introspect xyz.openbmc_project.GpuSensor /xyz/openbmc_project/inventory/NVIDIA_GB200_GPU_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.Common.UUID interface - - -
.UUID property s "6c13dc0f-ec0c-1fc9-db63-4d9f1053b5ef" emits-change
xyz.openbmc_project.Inventory.Decorator.Asset interface - - -
.Manufacturer property s "NVIDIA" emits-change
.Model property s "RTXPRO6000BlackwellDC" emits-change
.PartNumber property s "B40GPU" emits-change
.SerialNumber property s "1641425000136" emits-change
xyz.openbmc_project.Inventory.Decorator.Revision interface - - -
.Version property s "2BB5-895-A1" emits-change
xyz.openbmc_project.Inventory.Item.Accelerator interface - - -
.Type property s "GPU" emits-change

```

Change-Id: Ib0870f1680687272e58c49726618aeee332e3d4a
Signed-off-by: Rohit PAI <ropai@nvidia.com>

show more ...

Nvidia-GPU: Add UUID support for GPU device

Support for fetching UUID information using Get Inventory command

Tested
- Able to get UUID info from the GPU device and populate that on Dbus

```
busc

Nvidia-GPU: Add UUID support for GPU device

Support for fetching UUID information using Get Inventory command

Tested
- Able to get UUID info from the GPU device and populate that on Dbus

```
busctl introspect xyz.openbmc_project.GpuSensor /xyz/openbmc_project/inventory/NVIDIA_GB200_GPU_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.Common.UUID interface - - -
.UUID property s "6c13dc0f-ec0c-1fc9-db63-4d9f1053b5ef" emits-change
xyz.openbmc_project.Inventory.Decorator.Asset interface - - -
.PartNumber property s "B40GPU" emits-change
.SerialNumber property s "1641425000136" emits-change
xyz.openbmc_project.Inventory.Item.Accelerator interface - - -
.Type property s "GPU" emits-change

```

Change-Id: I4600e85b3bf00e68032bb2b960cb803a76f6af96
Signed-off-by: Rohit PAI <ropai@nvidia.com>

show more ...

Nvidia-Gpu: Support for Nvidia GPU Serial Number, Part Number

Support for serial number and part number fetch is added in inventory
class which uses the Get Inventory Command. Currently we have a re

Nvidia-Gpu: Support for Nvidia GPU Serial Number, Part Number

Support for serial number and part number fetch is added in inventory
class which uses the Get Inventory Command. Currently we have a retry
policy of 3 retires to account of any failures to get response from the
GPU device.

Tested
- Able to get Serial Number, Part Number updated from the GPU device

```
busctl introspect xyz.openbmc_project.GpuSensor /xyz/openbmc_project/inventory/NVIDIA_GB200_GPU_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.Inventory.Decorator.Asset interface - - -
.PartNumber property s "699-2G153-0210-TS1" emits-change
.SerialNumber property s "1330325220002" emits-change
xyz.openbmc_project.Inventory.Item.Accelerator interface - - -
.Type property s "GPU" emits-change

```

Change-Id: Id2b33a66ff6d5480f8e229fa233528afc0bdcfc0
Signed-off-by: Rohit PAI <ropai@nvidia.com>

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Nvidia-gpu: Create GPU Inventory device

GPU device class implements Item.accelerator interface to get identified
as as GPU device. This will be used in Redfish to populate the GPU
processor schema.

Nvidia-gpu: Create GPU Inventory device

GPU device class implements Item.accelerator interface to get identified
as as GPU device. This will be used in Redfish to populate the GPU
processor schema.

Tested -
```
root@gb200nvl-obmc:~# busctl introspect xyz.openbmc_project.GpuSensor /xyz/openbmc_project/inventory/NVIDIA_GB200_GPU_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.Inventory.Item.Accelerator interface - - -
.Type property s "GPU" emits-change
```

Change-Id: I20434529860cb37889e63651bbcd97cadfa9d54e
Signed-off-by: Rohit PAI <ropai@nvidia.com>

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Nvidia-gpu: Encode/decode APIs for GPU Inventory

Added support for encoding and decoding Get Inventory command.
The command supports fetching inventory properties including Serial
Number, Part Numbe

Nvidia-gpu: Encode/decode APIs for GPU Inventory

Added support for encoding and decoding Get Inventory command.
The command supports fetching inventory properties including Serial
Number, Part Number, Marketing Name, etc for Nvidia GPUs

Tested
- added new UT for encode and decode APIs which pass

Change-Id: I9e5afbe356b64fd7ae4f7a2a65043f3eeffa3807
Signed-off-by: Rohit PAI <ropai@nvidia.com>

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