add SR-IOV support in EDK II.

[mirror_edk2.git] / IntelFrameworkModulePkg / Bus / Pci / PciBusDxe / PciCommand.h

diff --git a/IntelFrameworkModulePkg/Bus/Pci/PciBusDxe/PciCommand.h b/IntelFrameworkModulePkg/Bus/Pci/PciBusDxe/PciCommand.h
index 7019b5ea196479f42c0acb056b9a8245a70c4023..942bea941e308b22e202e567972141e2439465f5 100644 (file)
--- a/IntelFrameworkModulePkg/Bus/Pci/PciBusDxe/PciCommand.h
+++ b/IntelFrameworkModulePkg/Bus/Pci/PciBusDxe/PciCommand.h
@@ -118,6 +118,27 @@ LocateCapabilityRegBlock (
   OUT UINT8         *NextRegBlock OPTIONAL\r
   );\r
 \r
+/**\r
+  Locate PciExpress capability register block per capability ID.\r
+\r
+  @param PciIoDevice       A pointer to the PCI_IO_DEVICE.\r
+  @param CapId             The capability ID.\r
+  @param Offset            A pointer to the offset returned.\r
+  @param NextRegBlock      A pointer to the next block returned.\r
+\r
+  @retval EFI_SUCCESS      Successfuly located capability register block.\r
+  @retval EFI_UNSUPPORTED  Pci device does not support capability.\r
+  @retval EFI_NOT_FOUND    Pci device support but can not find register block.\r
+\r
+**/\r
+EFI_STATUS\r
+LocatePciExpressCapabilityRegBlock (\r
+  IN     PCI_IO_DEVICE *PciIoDevice,\r
+  IN     UINT16        CapId,\r
+  IN OUT UINT32        *Offset,\r
+     OUT UINT32        *NextRegBlock OPTIONAL\r
+  );\r
+\r
 /**\r
   Macro that reads command register.\r
 \r