MdeModulePkg/PciHostBridge: Add IOMMU support.
[mirror_edk2.git] / MdeModulePkg / Bus / Pci / PciHostBridgeDxe / PciRootBridgeIo.c
index 8af131b..068295b 100644 (file)
@@ -17,6 +17,8 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 #include "PciRootBridge.h"\r
 #include "PciHostResource.h"\r
 \r
+extern EDKII_IOMMU_PROTOCOL        *mIoMmuProtocol;\r
+\r
 #define NO_MAPPING  (VOID *) (UINTN) -1\r
 \r
 //\r
@@ -1072,6 +1074,26 @@ RootBridgeIoMap (
 \r
   RootBridge = ROOT_BRIDGE_FROM_THIS (This);\r
 \r
+  if (mIoMmuProtocol != NULL) {\r
+    if (!RootBridge->DmaAbove4G) {\r
+      //\r
+      // Clear 64bit support\r
+      //\r
+      if (Operation > EfiPciOperationBusMasterCommonBuffer) {\r
+        Operation = (EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_OPERATION) (Operation - EfiPciOperationBusMasterRead64);\r
+      }\r
+    }\r
+    Status = mIoMmuProtocol->Map (\r
+                               mIoMmuProtocol,\r
+                               Operation,\r
+                               HostAddress,\r
+                               NumberOfBytes,\r
+                               DeviceAddress,\r
+                               Mapping\r
+                               );\r
+    return Status;\r
+  }\r
+\r
   PhysicalAddress = (EFI_PHYSICAL_ADDRESS) (UINTN) HostAddress;\r
   if ((!RootBridge->DmaAbove4G ||\r
        (Operation != EfiPciOperationBusMasterRead64 &&\r
@@ -1194,8 +1216,18 @@ RootBridgeIoUnmap (
   MAP_INFO                 *MapInfo;\r
   LIST_ENTRY               *Link;\r
   PCI_ROOT_BRIDGE_INSTANCE *RootBridge;\r
+  EFI_STATUS                Status;\r
+\r
+  if (mIoMmuProtocol != NULL) {\r
+    Status = mIoMmuProtocol->Unmap (\r
+                               mIoMmuProtocol,\r
+                               Mapping\r
+                               );\r
+    return Status;\r
+  }\r
 \r
   RootBridge = ROOT_BRIDGE_FROM_THIS (This);\r
+\r
   //\r
   // See if the Map() operation associated with this Unmap() required a mapping\r
   // buffer. If a mapping buffer was not required, then this function simply\r
@@ -1312,6 +1344,24 @@ RootBridgeIoAllocateBuffer (
 \r
   RootBridge = ROOT_BRIDGE_FROM_THIS (This);\r
 \r
+  if (mIoMmuProtocol != NULL) {\r
+    if (!RootBridge->DmaAbove4G) {\r
+      //\r
+      // Clear DUAL_ADDRESS_CYCLE\r
+      //\r
+      Attributes &= ~EFI_PCI_ATTRIBUTE_DUAL_ADDRESS_CYCLE;\r
+    }\r
+    Status = mIoMmuProtocol->AllocateBuffer (\r
+                               mIoMmuProtocol,\r
+                               Type,\r
+                               MemoryType,\r
+                               Pages,\r
+                               HostAddress,\r
+                               Attributes\r
+                               );\r
+    return Status;\r
+  }\r
+\r
   AllocateType = AllocateAnyPages;\r
   if (!RootBridge->DmaAbove4G ||\r
       (Attributes & EFI_PCI_ATTRIBUTE_DUAL_ADDRESS_CYCLE) == 0) {\r
@@ -1356,6 +1406,17 @@ RootBridgeIoFreeBuffer (
   OUT VOID                             *HostAddress\r
   )\r
 {\r
+  EFI_STATUS                Status;\r
+\r
+  if (mIoMmuProtocol != NULL) {\r
+    Status = mIoMmuProtocol->FreeBuffer (\r
+                               mIoMmuProtocol,\r
+                               Pages,\r
+                               HostAddress\r
+                               );\r
+    return Status;\r
+  }\r
+\r
   return gBS->FreePages ((EFI_PHYSICAL_ADDRESS) (UINTN) HostAddress, Pages);\r
 }\r
 \r