mirror of
https://github.com/NVIDIA/nvidia-container-toolkit
synced 2024-11-23 00:38:26 +00:00
106 lines
2.8 KiB
Go
106 lines
2.8 KiB
Go
/*
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* Copyright (c) NVIDIA CORPORATION. All rights reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package nvpci
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import (
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"fmt"
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"strings"
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)
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const (
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// PCIMellanoxVendorID represents PCI vendor id for Mellanox.
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PCIMellanoxVendorID uint16 = 0x15b3
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// PCINetworkControllerClass represents the PCI class for network controllers.
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PCINetworkControllerClass uint32 = 0x020000
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// PCIBridgeClass represents the PCI class for network controllers.
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PCIBridgeClass uint32 = 0x060400
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)
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// GetNetworkControllers returns all Mellanox Network Controller PCI devices on the system.
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func (p *nvpci) GetNetworkControllers() ([]*NvidiaPCIDevice, error) {
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devices, err := p.GetAllDevices()
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if err != nil {
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return nil, fmt.Errorf("error getting all NVIDIA devices: %v", err)
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}
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var filtered []*NvidiaPCIDevice
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for _, d := range devices {
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if d.IsNetworkController() {
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filtered = append(filtered, d)
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}
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}
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return filtered, nil
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}
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// GetPciBridges retrieves all Mellanox PCI(e) Bridges.
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func (p *nvpci) GetPciBridges() ([]*NvidiaPCIDevice, error) {
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devices, err := p.GetAllDevices()
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if err != nil {
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return nil, fmt.Errorf("error getting all NVIDIA devices: %v", err)
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}
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var filtered []*NvidiaPCIDevice
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for _, d := range devices {
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if d.IsPciBridge() {
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filtered = append(filtered, d)
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}
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}
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return filtered, nil
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}
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// IsNetworkController if class == 0x300.
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func (d *NvidiaPCIDevice) IsNetworkController() bool {
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return d.Class == PCINetworkControllerClass
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}
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// IsPciBridge if class == 0x0604.
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func (d *NvidiaPCIDevice) IsPciBridge() bool {
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return d.Class == PCIBridgeClass
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}
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// IsDPU returns if a device is a DPU.
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func (d *NvidiaPCIDevice) IsDPU() bool {
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if !strings.Contains(d.DeviceName, "BlueField") {
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return false
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}
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// DPU is a multifunction device hence look only for the .0 function
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// and ignore subfunctions like .1, .2, etc.
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if strings.HasSuffix(d.Address, ".0") {
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return true
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}
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return false
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}
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// GetDPUs returns all Mellanox DPU devices on the system.
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func (p *nvpci) GetDPUs() ([]*NvidiaPCIDevice, error) {
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devices, err := p.GetNetworkControllers()
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if err != nil {
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return nil, fmt.Errorf("error getting all network controllers: %v", err)
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}
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var filtered []*NvidiaPCIDevice
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for _, d := range devices {
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if d.IsDPU() {
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filtered = append(filtered, d)
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}
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}
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return filtered, nil
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}
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