OvmfPkg/VirtioPciDeviceDxe: implement IOMMU-like member functions

[mirror_edk2.git] / OvmfPkg / VirtioPciDeviceDxe / VirtioPciFunctions.c

diff --git a/OvmfPkg/VirtioPciDeviceDxe/VirtioPciFunctions.c b/OvmfPkg/VirtioPciDeviceDxe/VirtioPciFunctions.c
index 5f86914265eadcffa9a6b2508e91eedcb0417284..bd912cca9b29d47855817a49c080dd4472b7bd4c 100644 (file)
--- a/OvmfPkg/VirtioPciDeviceDxe/VirtioPciFunctions.c
+++ b/OvmfPkg/VirtioPciDeviceDxe/VirtioPciFunctions.c
@@ -5,6 +5,7 @@
   Copyright (C) 2012, Red Hat, Inc.\r
   Copyright (c) 2012, Intel Corporation. All rights reserved.<BR>\r
   Copyright (C) 2013, ARM Ltd.\r
   Copyright (C) 2012, Red Hat, Inc.\r
   Copyright (c) 2012, Intel Corporation. All rights reserved.<BR>\r
   Copyright (C) 2013, ARM Ltd.\r

+  Copyright (C) 2017, AMD Inc, All rights reserved.<BR>\r

 \r
   This program and the accompanying materials are licensed and made available\r
   under the terms and conditions of the BSD License which accompanies this\r
 \r
   This program and the accompanying materials are licensed and made available\r
   under the terms and conditions of the BSD License which accompanies this\r


@@ -271,3 +272,60 @@ VirtioPciSetDeviceStatus (
   return VirtioPciIoWrite (Dev, VIRTIO_PCI_OFFSET_QUEUE_DEVICE_STATUS,\r
       sizeof (UINT8), DeviceStatus);\r
 }\r
   return VirtioPciIoWrite (Dev, VIRTIO_PCI_OFFSET_QUEUE_DEVICE_STATUS,\r
       sizeof (UINT8), DeviceStatus);\r
 }\r

+\r
+EFI_STATUS\r
+EFIAPI\r
+VirtioPciAllocateSharedPages (\r
+  IN  VIRTIO_DEVICE_PROTOCOL  *This,\r
+  IN  UINTN                   NumPages,\r
+  OUT VOID                    **HostAddress\r
+  )\r
+{\r
+  VOID        *Buffer;\r
+\r
+  Buffer = AllocatePages (NumPages);\r
+  if (Buffer == NULL) {\r
+    return EFI_OUT_OF_RESOURCES;\r
+  }\r
+\r
+  *HostAddress = Buffer;\r
+  return EFI_SUCCESS;\r
+}\r
+\r
+VOID\r
+EFIAPI\r
+VirtioPciFreeSharedPages (\r
+  IN  VIRTIO_DEVICE_PROTOCOL  *This,\r
+  IN  UINTN                   NumPages,\r
+  IN  VOID                    *HostAddress\r
+  )\r
+{\r
+  FreePages (HostAddress, NumPages);\r
+}\r
+\r
+EFI_STATUS\r
+EFIAPI\r
+VirtioPciMapSharedBuffer (\r
+  IN      VIRTIO_DEVICE_PROTOCOL  *This,\r
+  IN      VIRTIO_MAP_OPERATION    Operation,\r
+  IN      VOID                    *HostAddress,\r
+  IN OUT  UINTN                   *NumberOfBytes,\r
+  OUT     EFI_PHYSICAL_ADDRESS    *DeviceAddress,\r
+  OUT     VOID                    **Mapping\r
+  )\r
+{\r
+  *DeviceAddress = (EFI_PHYSICAL_ADDRESS) (UINTN) HostAddress;\r
+  *Mapping = NULL;\r
+\r
+  return EFI_SUCCESS;\r
+}\r
+\r
+EFI_STATUS\r
+EFIAPI\r
+VirtioPciUnmapSharedBuffer (\r
+  IN VIRTIO_DEVICE_PROTOCOL    *This,\r
+  IN VOID                      *Mapping\r
+  )\r
+{\r
+  return EFI_SUCCESS;\r
+}\r