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package main
import (
"fmt"
"io/ioutil"
"os"
"path"
"strconv"
"strings"
pluginapi "k8s.io/kubelet/pkg/apis/deviceplugin/v1beta1"
)
const (
// SysfsDevices = "/sys/bus/pci/devices"
SysfsDevices = "/root/demo"
MgmtPrefix = "/dev/xclmgmt"
UserPrefix = "/dev/dri"
QdmaPrefix = "/dev/xfpga"
QDMASTR = "dma.qdma.u"
UserPFKeyword = "drm"
DRMSTR = "renderD"
ROMSTR = "rom"
SNSTR = "xmc.u."
DSAverFile = "VBNV"
DSAtsFile = "timestamp"
InstanceFile = "instance"
MgmtFile = "mgmt_pf"
UserFile = "user_pf"
VendorFile = "vendor"
DeviceFile = "device"
SNFile = "serial_num"
VtShell = "xilinx_u30"
U30CommonShell = "ama_u30"
XilinxVendorID = "0x10ee"
ADVANTECH_ID = "0x13fe"
AWS_ID = "0x1d0f"
AristaVendorID = "0x3475"
)
type Pairs struct {
Mgmt string
User string
Qdma string
}
type Device struct {
index string
deviceID string //devid of the user pf
Healthy string
SN string
}
func GetInstance(DBDF string) (string, error) {
strArray := strings.Split(DBDF, ":")
domain, err := strconv.ParseUint(strArray[0], 16, 16)
if err != nil {
return "", fmt.Errorf("strconv failed: %s\n", strArray[0])
}
bus, err := strconv.ParseUint(strArray[1], 16, 8)
if err != nil {
return "", fmt.Errorf("strconv failed: %s\n", strArray[1])
}
strArray = strings.Split(strArray[2], ".")
dev, err := strconv.ParseUint(strArray[0], 16, 8)
if err != nil {
return "", fmt.Errorf("strconv failed: %s\n", strArray[0])
}
fc, err := strconv.ParseUint(strArray[1], 16, 8)
if err != nil {
return "", fmt.Errorf("strconv failed: %s\n", strArray[1])
}
ret := domain*65536 + bus*256 + dev*8 + fc
return strconv.FormatUint(ret, 10), nil
}
func GetFileNameFromPrefix(dir string, prefix string) (string, error) {
userFiles, err := ioutil.ReadDir(dir)
if err != nil {
return "", fmt.Errorf("Can't read folder %s", dir)
}
for _, userFile := range userFiles {
fname := userFile.Name()
if !strings.HasPrefix(fname, prefix) {
continue
}
return fname, nil
}
return "", nil
}
func GetFileContent(file string) (string, error) {
if buf, err := ioutil.ReadFile(file); err != nil {
return "", fmt.Errorf("Can't read file %s", file)
} else {
ret := strings.Trim(string(buf), "\n")
return ret, nil
}
}
func FileExist(fname string) bool {
if _, err := os.Stat(fname); err != nil {
if os.IsNotExist(err) {
return false
}
}
return true
}
func IsMgmtPf(pciID string) bool {
fname := path.Join(SysfsDevices, pciID, MgmtFile)
return FileExist(fname)
}
func IsUserPf(pciID string) bool {
fname := path.Join(SysfsDevices, pciID, UserFile)
return FileExist(fname)
}
func GetDevices() ([]Device, error) {
var devices []Device
pciFiles, err := ioutil.ReadDir(SysfsDevices)
if err != nil {
return nil, fmt.Errorf("Can't read folder %s", SysfsDevices)
}
for _, pciFile := range pciFiles {
pciID := pciFile.Name()
// get device id
fname := path.Join(SysfsDevices, pciID, DeviceFile)
content, err := GetFileContent(fname)
if err != nil {
return nil, err
}
devid := content
fname = path.Join(SysfsDevices, pciID, "SN")
content, err = GetFileContent(fname)
if err != nil {
return nil, err
}
sn := content
healthy := pluginapi.Healthy
devices = append(devices, Device{
index: strconv.Itoa(len(devices) + 1),
deviceID: devid,
Healthy: healthy,
SN: sn,
})
}
return devices, nil
}
// func main() {
// devices, err := GetDevices()
// if err != nil {
// fmt.Printf("%s !!!\n", err)
// return
// }
// //SNFolder, err := GetFileNameFromPrefix(path.Join(SysfsDevices, "0000:e3:00.1"), SNSTR)
// //fname := path.Join(SysfsDevices, "0000:e3:00.1", SNFolder, SNFile)
// //content, err := GetFileContent(fname)
// //SN := content
// //fmt.Printf("SN: %v \n", SN)
// for _, device := range devices {
// fmt.Printf("Device: %v \n", device)
// fmt.Printf("ID: %s \n\n", device.deviceID)
// fmt.Printf("SN: %s \n\n", device.SN)
// fmt.Printf("Heathy: %s \n\n", device.Healthy)
// }
// }
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