Function ScanSPD

rEFIt_UEFI/Platform/spd.cpp:862–948

}

VOID ScanSPD()
{
  EFI_STATUS            Status;
  EFI_HANDLE            *HandleBuffer = NULL;
//  EFI_GUID              **ProtocolGuidArray;
  EFI_PCI_IO_PROTOCOL   *PciIo = NULL;
  UINTN                 HandleCount;
//  UINTN                 ArrayCount;
  UINTN                 Index;
//  UINTN                 ProtocolIndex;
  PCI_TYPE00            gPci;

  DbgHeader("ScanSPD");
  
  // Scan PCI handles
  Status = gBS->LocateHandleBuffer (
                                    ByProtocol,
                                    &gEfiPciIoProtocolGuid,
                                    NULL,
                                    &HandleCount,
                                    &HandleBuffer
                                    );
  
  if (!EFI_ERROR(Status)) {
    for (Index = 0; Index < HandleCount; ++Index) {
      Status = gBS->HandleProtocol(HandleBuffer[Index], &gEfiPciIoProtocolGuid, (VOID **)&PciIo);
      if (!EFI_ERROR(Status)) {
        // Read PCI BUS
        //PciIo->GetLocation (PciIo, &Segment, &Bus, &Device, &Function);
        Status = PciIo->Pci.Read (
                                  PciIo,
                                  EfiPciIoWidthUint32,
                                  0,
                                  sizeof (gPci) / sizeof (UINT32),
                                  &gPci
                                  );
        //SmBus controller has class = 0x0c0500
        if ((gPci.Hdr.ClassCode[2] == 0x0c) && (gPci.Hdr.ClassCode[1] == 5)
            && (gPci.Hdr.ClassCode[0] == 0) && (gPci.Hdr.VendorId == 0x8086 || gPci.Hdr.VendorId == 0x10DE)) {
          DBG("SMBus device : %04hX %04hX class=%02hhX%02hhX%02hhX status=%s\n",
               gPci.Hdr.VendorId,
               gPci.Hdr.DeviceId,
               gPci.Hdr.ClassCode[2],
               gPci.Hdr.ClassCode[1],
               gPci.Hdr.ClassCode[0],
               efiStrError(Status)
               );
          read_smb(PciIo, gPci.Hdr.VendorId, gPci.Hdr.DeviceId);
        }
      }
    }
  }


  // Scan PCI BUS For SmBus controller 
/*  Status = gBS->LocateHandleBuffer(AllHandles,NULL,NULL,&HandleCount,&HandleBuffer);
  if (!EFI_ERROR(Status)) {
    for (HandleIndex = 0; HandleIndex < HandleCount; HandleIndex++) {