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79 lines
2.0 KiB
Go
79 lines
2.0 KiB
Go
// Copyright 2019 Yunion
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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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package isolated_device
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import (
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"fmt"
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"io/ioutil"
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"path"
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"path/filepath"
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"strconv"
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"strings"
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"yunion.io/x/pkg/errors"
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"yunion.io/x/onecloud/pkg/apis/compute"
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"yunion.io/x/onecloud/pkg/util/fileutils2"
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)
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type sSRIOVGpuDevice struct {
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*sSRIOVBaseDevice
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}
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func NewSRIOVGpuDevice(dev *PCIDevice, devType string) *sSRIOVGpuDevice {
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return &sSRIOVGpuDevice{
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sSRIOVBaseDevice: newSRIOVBaseDevice(dev, devType),
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}
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}
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func (dev *sSRIOVGpuDevice) GetPfName() string {
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return ""
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}
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func (dev *sSRIOVGpuDevice) GetVirtfn() int {
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return -1
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}
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func getSRIOVGpus(gpuPF string) ([]*sSRIOVGpuDevice, error) {
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devicePath := fmt.Sprintf("/sys/bus/pci/devices/0000:%s", gpuPF)
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if !fileutils2.Exists(devicePath) {
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return nil, errors.Errorf("unknown device %s", gpuPF)
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}
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files, err := ioutil.ReadDir(devicePath)
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if err != nil {
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return nil, errors.Wrap(err, "read device path")
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}
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sriovGPUs := make([]*sSRIOVGpuDevice, 0)
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for i := range files {
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if strings.HasPrefix(files[i].Name(), "virtfn") {
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_, err := strconv.Atoi(files[i].Name()[len("virtfn"):])
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if err != nil {
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return nil, err
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}
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vfPath, err := filepath.EvalSymlinks(path.Join(devicePath, files[i].Name()))
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if err != nil {
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return nil, err
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}
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vfBDF := path.Base(vfPath)
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vfDev, err := detectSRIOVDevice(vfBDF)
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if err != nil {
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return nil, err
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}
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sriovGPUs = append(sriovGPUs, NewSRIOVGpuDevice(vfDev, compute.SRIOV_VGPU_TYPE))
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}
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}
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return sriovGPUs, err
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}
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