1 files changed, 52 insertions, 0 deletions
diff --git a/roms/edk2/OvmfPkg/Include/Library/PciCapPciIoLib.h b/roms/edk2/OvmfPkg/Include/Library/PciCapPciIoLib.h
new file mode 100644
index 000000000..9524ff3e9
--- /dev/null
+++ b/roms/edk2/OvmfPkg/Include/Library/PciCapPciIoLib.h
@@ -0,0 +1,52 @@
+/** @file
+  Library class layered on top of PciCapLib that allows clients to plug an
+  EFI_PCI_IO_PROTOCOL backend into PciCapLib, for config space access.
+
+  Copyright (C) 2018, Red Hat, Inc.
+
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+**/
+
+#ifndef __PCI_CAP_PCI_IO_LIB_H__
+#define __PCI_CAP_PCI_IO_LIB_H__
+
+#include <Protocol/PciIo.h>
+
+#include <Library/PciCapLib.h>
+
+
+/**
+  Create a PCI_CAP_DEV object from an EFI_PCI_IO_PROTOCOL instance. The config
+  space accessors are based upon EFI_PCI_IO_PROTOCOL.Pci.Read() and
+  EFI_PCI_IO_PROTOCOL.Pci.Write().
+
+  @param[in] PciIo       EFI_PCI_IO_PROTOCOL representation of the PCI device.
+
+  @param[out] PciDevice  The PCI_CAP_DEV object constructed as described above.
+                         PciDevice can be passed to the PciCapLib APIs.
+
+  @retval EFI_SUCCESS           PciDevice has been constructed and output.
+
+  @retval EFI_OUT_OF_RESOURCES  Memory allocation failed.
+**/
+EFI_STATUS
+EFIAPI
+PciCapPciIoDeviceInit (
+  IN  EFI_PCI_IO_PROTOCOL *PciIo,
+  OUT PCI_CAP_DEV         **PciDevice
+  );
+
+
+/**
+  Free the resources used by PciDevice.
+
+  @param[in] PciDevice  The PCI_CAP_DEV object to free, originally produced by
+                        PciCapPciIoDeviceInit().
+**/
+VOID
+EFIAPI
+PciCapPciIoDeviceUninit (
+  IN PCI_CAP_DEV *PciDevice
+  );
+
+#endif // __PCI_CAP_PCI_IO_LIB_H__