Tying PLX PCIe Enumeration to WMI Win32_DiskDrive

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  Is there a way to bind a disk drive visible via PCIe device enumeration using one of the PCIe enumerable properties, such as the memory mapped IO address, to the WMI Win32_DiskDrive properties?

  Here is a visual of the PCIe tree using the PLX Editor (Broadcom). I hovered the mouse over the Samsung (vendor ID 0x144D) NVMe SSD located on Bus 6 of the PLX (8724) downstream port. You can see the device ID 0xA804 (the 960 model) in the box.

  

  I am able to enumerate all my PCIe devices using the PLX SDK, which gives the same view as what you can see with the PLX Editor.

  Int32 iPcieDevice;
  Int32 NumDevices;
  Boolean bAddDevice;
  Boolean isPreviousSlot = false;
  PLX_STATUS_CODE rc = PLX_STATUS_CODE.PLX_STATUS_FAILED;
  PLX_PORT_PROP PortProp = new PLX_PORT_PROP();
  PLX_DEVICE_KEY DevKey = new PLX_DEVICE_KEY();
  PLX_DEVICE_KEY[] DevKey_US = new PLX_DEVICE_KEY[PlxInit.MAX_DEVICES_TO_LIST];
  PLX_DRIVER_PROP DriverProp = new PLX_DRIVER_PROP();
  PLX_DEVICE_OBJECT Device = new PLX_DEVICE_OBJECT();
  
  
  iPcieDevice = 0;
  NumDevices = 0;
  do
  {
  	// Setup for next device
  	DevKey.Reset();
  
  	// Check if device exists
  	int sizeStruct = Marshal.SizeOf(typeof(PLX_DEVICE_KEY));
  	rc = (PLX_STATUS_CODE)PlxApi.PlxPci_DeviceFind(ref DevKey, (UInt16)iPcieDevice);
  
  	if (PLX_STATUS_CODE.PLX_STATUS_OK == rc)
  	{
  		// Default to add device
  		bAddDevice = true;
  
  		// Verify supported chip type
  		if (((DevKey.PlxChip & 0xFF00) != 0x2300) &&
  			((DevKey.PlxChip & 0xFF00) != 0x3300) &&
  			((DevKey.PlxChip & 0xFF00) != 0x8600) &&
  			((DevKey.PlxChip & 0xFF00) != 0x8700) &&
  			((DevKey.PlxChip & 0xFF00) != 0x9700))
  		{
  			bAddDevice = false;
  		}
  
  		// Open device to get its properties.
  		if (bAddDevice)
  		{
  		...
  		}
  } while ((rc == PLX_STATUS_CODE.PLX_STATUS_OK) && (NumDevices < PlxInit.MAX_DEVICES_TO_LIST));
  ...
  

  I can use WMI to show all the disk drives. `Win32_DiskDrive` does the job here. There is a nice page showing the code and output.

  string mosQuery = "SELECT * FROM Win32_DiskDrive";
  
  System.Management.ManagementObjectSearcher query = new System.Management.ManagementObjectSearcher(mosQuery);
  foreach (System.Management.ManagementObject mObj in query.Get())
  {
      foreach (System.Management.PropertyData property in mObj.Properties)
      {
          System.Console.WriteLine(property.Name + "__::" + property.Value);        
      }
  }   

  I did notice one overlap. Hardware enumeration shows the memory mapped IO address for the PCIe device, which I also see if I use `WMI` using `Win32_DeviceMemoryAddress`. Sadly, I do not see any overlap in properties between Win32_DiskDrive and the properties with Win32_DeviceMemoryAddress.

  I know that WMI can get complicated using searches and ACCESSOROF and the like. I am a beginner with WMI, so I might just be missing things.

  How do I get the Win32_DeviceMemoryAddress from Win32_DiskDrive or vice-versa?

  I am thinking that there is a nice multi-depth WMI search, where the output of one search pipes into another search. I presume that there are many possible answers using different methods. I just need to go from point A to point B, namely equating the hardware node (which the obvious here is the memory mapped IO address) to the Win32_DiskDrive. 

  
  

  • Moved by 宝宝徐 Thursday, August 24, 2017 9:03 AM

  Wednesday, August 23, 2017 10:27 PM