diff --git a/EdkCompatibilityPkg/Compatibility/DeviceIoToPciRootBridgeIoThunk/DeviceIoToPciRootBridgeIoThunk.c b/EdkCompatibilityPkg/Compatibility/DeviceIoToPciRootBridgeIoThunk/DeviceIoToPciRootBridgeIoThunk.c
new file mode 100644
index 0000000000..889c047c05
--- /dev/null
+++ b/EdkCompatibilityPkg/Compatibility/DeviceIoToPciRootBridgeIoThunk/DeviceIoToPciRootBridgeIoThunk.c
@@ -0,0 +1,1204 @@
+/** @file
+Module Layer Device I/O on top of PCI Root Bridge I/O (Segment 0)
+
+Device I/O is on list of deprecated protocols for UEFI 2.0 and later.
+This module module layers Device I/O on top of PCI Root Bridge I/O (Segment 0)
+ Use if:
+ There are no R8.x modules present that produces Device I/O
+ EFI drivers included that consume Device I/O
+ Platform required to support EFI drivers that consume Device I/O
+ Platform required to support EFI applications that consume Device I/O
+
+Copyright (c) 2008 Intel Corporation.
+All rights reserved. This program and the accompanying materials
+are licensed and made available under the terms and conditions of the BSD License
+which accompanies this distribution. The full text of the license may be found at
+http://opensource.org/licenses/bsd-license.php
+
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+
+
+/**
+ Perform reading memory mapped I/O space of device.
+
+ @param This A pointer to EFI_DEVICE_IO protocol instance.
+ @param Width Width of I/O operations.
+ @param Address The base address of I/O operations.
+ @param Count The number of I/O operations to perform. Bytes
+ moves is Width size * Count, starting at Address.
+ @param Buffer The destination buffer to store results.
+
+ @retval EFI_SUCCESS The data was read from the device.
+ @retval EFI_INVALID_PARAMETER Width is invalid.
+ @retval EFI_OUT_OF_RESOURCES The request could not be completed due to lack of
+ resources.
+
+**/
+EFI_STATUS
+EFIAPI
+DeviceIoMemRead (
+ IN EFI_DEVICE_IO_PROTOCOL *This,
+ IN EFI_IO_WIDTH Width,
+ IN UINT64 Address,
+ IN UINTN Count,
+ IN OUT VOID *Buffer
+ )
+;
+
+
+/**
+ Perform writing memory mapped I/O space of device.
+
+ @param This A pointer to EFI_DEVICE_IO protocol instance.
+ @param Width Width of I/O operations.
+ @param Address The base address of I/O operations.
+ @param Count The number of I/O operations to perform. Bytes
+ moves is Width size * Count, starting at Address.
+ @param Buffer The source buffer of data to be written.
+
+ @retval EFI_SUCCESS The data was written to the device.
+ @retval EFI_INVALID_PARAMETER Width is invalid.
+ @retval EFI_OUT_OF_RESOURCES The request could not be completed due to lack of
+ resources.
+
+**/
+EFI_STATUS
+EFIAPI
+DeviceIoMemWrite (
+ IN EFI_DEVICE_IO_PROTOCOL *This,
+ IN EFI_IO_WIDTH Width,
+ IN UINT64 Address,
+ IN UINTN Count,
+ IN OUT VOID *Buffer
+ )
+;
+
+/**
+ Perform reading I/O space of device.
+
+ @param This A pointer to EFI_DEVICE_IO protocol instance.
+ @param Width Width of I/O operations.
+ @param Address The base address of I/O operations.
+ @param Count The number of I/O operations to perform. Bytes
+ moves is Width size * Count, starting at Address.
+ @param Buffer The destination buffer to store results.
+
+ @retval EFI_SUCCESS The data was read from the device.
+ @retval EFI_INVALID_PARAMETER Width is invalid.
+ @retval EFI_OUT_OF_RESOURCES The request could not be completed due to lack of
+ resources.
+
+**/
+EFI_STATUS
+EFIAPI
+DeviceIoIoRead (
+ IN EFI_DEVICE_IO_PROTOCOL *This,
+ IN EFI_IO_WIDTH Width,
+ IN UINT64 Address,
+ IN UINTN Count,
+ IN OUT VOID *Buffer
+ )
+;
+
+/**
+ Perform writing I/O space of device.
+
+ @param This A pointer to EFI_DEVICE_IO protocol instance.
+ @param Width Width of I/O operations.
+ @param Address The base address of I/O operations.
+ @param Count The number of I/O operations to perform. Bytes
+ moves is Width size * Count, starting at Address.
+ @param Buffer The source buffer of data to be written.
+
+ @retval EFI_SUCCESS The data was written to the device.
+ @retval EFI_INVALID_PARAMETER Width is invalid.
+ @retval EFI_OUT_OF_RESOURCES The request could not be completed due to lack of
+ resources.
+
+**/
+EFI_STATUS
+EFIAPI
+DeviceIoIoWrite (
+ IN EFI_DEVICE_IO_PROTOCOL *This,
+ IN EFI_IO_WIDTH Width,
+ IN UINT64 Address,
+ IN UINTN Count,
+ IN OUT VOID *Buffer
+ )
+;
+
+/**
+ Perform reading PCI configuration space of device
+
+ @param This A pointer to EFI_DEVICE_IO protocol instance.
+ @param Width Width of I/O operations.
+ @param Address The base address of I/O operations.
+ @param Count The number of I/O operations to perform. Bytes
+ moves is Width size * Count, starting at Address.
+ @param Buffer The destination buffer to store results.
+
+ @retval EFI_SUCCESS The data was read from the device.
+ @retval EFI_INVALID_PARAMETER Width is invalid.
+ @retval EFI_OUT_OF_RESOURCES The request could not be completed due to lack of
+ resources.
+
+**/
+EFI_STATUS
+EFIAPI
+DeviceIoPciRead (
+ IN EFI_DEVICE_IO_PROTOCOL *This,
+ IN EFI_IO_WIDTH Width,
+ IN UINT64 Address,
+ IN UINTN Count,
+ IN OUT VOID *Buffer
+ )
+;
+
+/**
+ Perform writing PCI configuration space of device.
+
+ @param This A pointer to EFI_DEVICE_IO protocol instance.
+ @param Width Width of I/O operations.
+ @param Address The base address of I/O operations.
+ @param Count The number of I/O operations to perform. Bytes
+ moves is Width size * Count, starting at Address.
+ @param Buffer The source buffer of data to be written.
+
+ @retval EFI_SUCCESS The data was written to the device.
+ @retval EFI_INVALID_PARAMETER Width is invalid.
+ @retval EFI_OUT_OF_RESOURCES The request could not be completed due to lack of
+ resources.
+
+**/
+EFI_STATUS
+EFIAPI
+DeviceIoPciWrite (
+ IN EFI_DEVICE_IO_PROTOCOL *This,
+ IN EFI_IO_WIDTH Width,
+ IN UINT64 Address,
+ IN UINTN Count,
+ IN OUT VOID *Buffer
+ )
+;
+
+/**
+ Provides an EFI Device Path for a PCI device with the given PCI configuration space address.
+
+ @param This A pointer to the EFI_DEVICE_IO_INTERFACE instance.
+ @param Address The PCI configuration space address of the device
+ whose Device Path is going to be returned.
+ @param PciDevicePath A pointer to the pointer for the EFI Device Path
+ for PciAddress. Memory for the Device Path is
+ allocated from the pool.
+
+ @retval EFI_SUCCESS The PciDevicePath returns a pointer to a valid EFI
+ Device Path.
+ @retval EFI_UNSUPPORTED The PciAddress does not map to a valid EFI Device
+ Path.
+ @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack
+ of resources.
+
+**/
+EFI_STATUS
+EFIAPI
+DeviceIoPciDevicePath (
+ IN EFI_DEVICE_IO_PROTOCOL *This,
+ IN UINT64 Address,
+ IN OUT EFI_DEVICE_PATH_PROTOCOL **PciDevicePath
+ )
+;
+
+/**
+ Provides the device-specific addresses needed to access system memory.
+
+ @param This A pointer to the EFI_DEVICE_IO_INTERFACE instance.
+ @param Operation Indicates if the bus master is going to read or
+ write to system memory.
+ @param HostAddress The system memory address to map to the device.
+ @param NumberOfBytes On input the number of bytes to map. On output the
+ number of bytes that were mapped.
+ @param DeviceAddress The resulting map address for the bus master
+ device to use to access the hosts HostAddress.
+ @param Mapping A resulting value to pass to Unmap().
+
+ @retval EFI_SUCCESS The range was mapped for the returned
+ NumberOfBytes.
+ @retval EFI_INVALID_PARAMETER The Operation or HostAddress is undefined.
+ @retval EFI_UNSUPPORTED The HostAddress cannot be mapped as a common
+ buffer.
+ @retval EFI_DEVICE_ERROR The system hardware could not map the requested
+ address.
+ @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack
+ of resources.
+
+**/
+EFI_STATUS
+EFIAPI
+DeviceIoMap (
+ IN EFI_DEVICE_IO_PROTOCOL *This,
+ IN EFI_IO_OPERATION_TYPE Operation,
+ IN EFI_PHYSICAL_ADDRESS *HostAddress,
+ IN OUT UINTN *NumberOfBytes,
+ OUT EFI_PHYSICAL_ADDRESS *DeviceAddress,
+ OUT VOID **Mapping
+ )
+;
+
+/**
+ Completes the Map() operation and releases any corresponding resources.
+
+ @param This A pointer to the EFI_DEVICE_IO_INTERFACE instance.
+ @param Mapping The mapping value returned from Map().
+
+ @retval EFI_SUCCESS The range was unmapped.
+ @retval EFI_DEVICE_ERROR The data was not committed to the target system
+ memory.
+
+**/
+EFI_STATUS
+EFIAPI
+DeviceIoUnmap (
+ IN EFI_DEVICE_IO_PROTOCOL *This,
+ IN VOID *Mapping
+ )
+;
+
+/**
+ Allocates pages that are suitable for an EFIBusMasterCommonBuffer mapping.
+
+ @param This A pointer to the EFI_DEVICE_IO_INTERFACE instance.
+ @param Type The type allocation to perform.
+ @param MemoryType The type of memory to allocate,
+ EfiBootServicesData or EfiRuntimeServicesData.
+ @param Pages The number of pages to allocate.
+ @param PhysicalAddress A pointer to store the base address of the
+ allocated range.
+
+ @retval EFI_SUCCESS The requested memory pages were allocated.
+ @retval EFI_OUT_OF_RESOURCES The memory pages could not be allocated.
+ @retval EFI_INVALID_PARAMETER The requested memory type is invalid.
+ @retval EFI_UNSUPPORTED The requested PhysicalAddress is not supported on
+ this platform.
+
+**/
+EFI_STATUS
+EFIAPI
+DeviceIoAllocateBuffer (
+ IN EFI_DEVICE_IO_PROTOCOL *This,
+ IN EFI_ALLOCATE_TYPE Type,
+ IN EFI_MEMORY_TYPE MemoryType,
+ IN UINTN Pages,
+ IN OUT EFI_PHYSICAL_ADDRESS *PhysicalAddress
+ )
+;
+
+/**
+ Flushes any posted write data to the device.
+
+ @param This A pointer to the EFI_DEVICE_IO_INTERFACE instance.
+
+ @retval EFI_SUCCESS The buffers were flushed.
+ @retval EFI_DEVICE_ERROR The buffers were not flushed due to a hardware
+ error.
+
+**/
+EFI_STATUS
+EFIAPI
+DeviceIoFlush (
+ IN EFI_DEVICE_IO_PROTOCOL *This
+ )
+;
+
+/**
+ Frees pages that were allocated with AllocateBuffer().
+
+ @param This A pointer to the EFI_DEVICE_IO_INTERFACE instance.
+ @param Pages The number of pages to free.
+ @param HostAddress The base address of the range to free.
+
+ @retval EFI_SUCCESS The requested memory pages were freed.
+ @retval EFI_NOT_FOUND The requested memory pages were not allocated with
+ AllocateBuffer().
+ @retval EFI_INVALID_PARAMETER HostAddress is not page aligned or Pages is
+ invalid.
+
+**/
+EFI_STATUS
+EFIAPI
+DeviceIoFreeBuffer (
+ IN EFI_DEVICE_IO_PROTOCOL *This,
+ IN UINTN Pages,
+ IN EFI_PHYSICAL_ADDRESS HostAddress
+ )
+;
+
+
+#define DEVICE_IO_PRIVATE_DATA_SIGNATURE EFI_SIGNATURE_32 ('D', 'e', 'I', 'O')
+
+typedef struct {
+ UINTN Signature;
+ EFI_DEVICE_IO_PROTOCOL DeviceIo;
+ EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *PciRootBridgeIo;
+ EFI_DEVICE_PATH_PROTOCOL *DevicePath;
+ UINT16 PrimaryBus;
+ UINT16 SubordinateBus;
+} DEVICE_IO_PRIVATE_DATA;
+
+#define DEVICE_IO_PRIVATE_DATA_FROM_THIS(a) CR (a, DEVICE_IO_PRIVATE_DATA, DeviceIo, DEVICE_IO_PRIVATE_DATA_SIGNATURE)
+
+#define MAX_COMMON_BUFFER 0x00000000FFFFFFFF
+
+
+EFI_EVENT mPciRootBridgeIoRegistration;
+
+//
+// Device Io Volume Protocol template
+//
+DEVICE_IO_PRIVATE_DATA gDeviceIoPrivateDataTemplate = {
+ DEVICE_IO_PRIVATE_DATA_SIGNATURE,
+ {
+ {
+ DeviceIoMemRead,
+ DeviceIoMemWrite
+ },
+ {
+ DeviceIoIoRead,
+ DeviceIoIoWrite
+ },
+ {
+ DeviceIoPciRead,
+ DeviceIoPciWrite,
+ },
+ DeviceIoMap,
+ DeviceIoPciDevicePath,
+ DeviceIoUnmap,
+ DeviceIoAllocateBuffer,
+ DeviceIoFlush,
+ DeviceIoFreeBuffer
+ },
+ NULL, // PciRootBridgeIo
+ NULL, // DevicePath
+ 0, // PrimaryBus
+ 255 // SubordinateBus
+};
+
+VOID
+EFIAPI
+PciRootBridgeIoNotificationEvent (
+ IN EFI_EVENT Event,
+ IN VOID *Context
+ )
+{
+ EFI_STATUS Status;
+ UINTN BufferSize;
+ EFI_HANDLE Handle;
+ DEVICE_IO_PRIVATE_DATA *Private;
+ EFI_DEVICE_IO_PROTOCOL *DeviceIo;
+ EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *PciRootBridgeIo;
+
+ while (TRUE) {
+ BufferSize = sizeof (Handle);
+ Status = gBS->LocateHandle (
+ ByRegisterNotify,
+ &gEfiPciRootBridgeIoProtocolGuid,
+ mPciRootBridgeIoRegistration,
+ &BufferSize,
+ &Handle
+ );
+ if (EFI_ERROR (Status)) {
+ //
+ // Exit Path of While Loop....
+ //
+ break;
+ }
+
+ //
+ // Skip this handle if the Device Io Protocol is already installed
+ //
+ Status = gBS->HandleProtocol (
+ Handle,
+ &gEfiDeviceIoProtocolGuid,
+ (VOID **)&DeviceIo
+ );
+ if (!EFI_ERROR (Status)) {
+ continue;
+ }
+
+ //
+ // Retrieve the Pci Root Bridge IO Protocol
+ //
+ Status = gBS->HandleProtocol (
+ Handle,
+ &gEfiPciRootBridgeIoProtocolGuid,
+ (VOID **)&PciRootBridgeIo
+ );
+ ASSERT_EFI_ERROR (Status);
+
+ //
+ // We only install Device IO for PCI bus in Segment 0
+ //
+ if (PciRootBridgeIo->SegmentNumber != 0) {
+ continue;
+ }
+
+ //
+ // Allocate private data structure
+ //
+ Private = AllocateCopyPool (sizeof (DEVICE_IO_PRIVATE_DATA), &gDeviceIoPrivateDataTemplate);
+ if (Private == NULL) {
+ continue;
+ }
+
+ Status = gBS->HandleProtocol (
+ Handle,
+ &gEfiDevicePathProtocolGuid,
+ (VOID **) &Private->DevicePath
+ );
+
+ //
+ // Install Device Io onto same handle
+ //
+ Status = gBS->InstallMultipleProtocolInterfaces (
+ &Handle,
+ &gEfiDeviceIoProtocolGuid,
+ &Private->DeviceIo,
+ NULL
+ );
+ ASSERT_EFI_ERROR (Status);
+ }
+}
+
+/**
+ The user Entry Point for DXE driver. The user code starts with this function
+ as the real entry point for the image goes into a library that calls this
+ function.
+
+ @param[in] ImageHandle The firmware allocated handle for the EFI image.
+ @param[in] SystemTable A pointer to the EFI System Table.
+
+ @retval EFI_SUCCESS The entry point is executed successfully.
+ @retval other Some error occurs when executing this entry point.
+
+**/
+EFI_STATUS
+EFIAPI
+InitializeDeviceIo (
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_SYSTEM_TABLE *SystemTable
+ )
+{
+ EfiCreateProtocolNotifyEvent (
+ &gEfiPciRootBridgeIoProtocolGuid,
+ TPL_CALLBACK,
+ PciRootBridgeIoNotificationEvent,
+ NULL,
+ &mPciRootBridgeIoRegistration
+ );
+ return EFI_SUCCESS;
+}
+
+
+/**
+ Perform reading memory mapped I/O space of device.
+
+ @param This A pointer to EFI_DEVICE_IO protocol instance.
+ @param Width Width of I/O operations.
+ @param Address The base address of I/O operations.
+ @param Count The number of I/O operations to perform. Bytes
+ moves is Width size * Count, starting at Address.
+ @param Buffer The destination buffer to store results.
+
+ @retval EFI_SUCCESS The data was read from the device.
+ @retval EFI_INVALID_PARAMETER Width is invalid.
+ @retval EFI_OUT_OF_RESOURCES The request could not be completed due to lack of
+ resources.
+
+**/
+EFI_STATUS
+EFIAPI
+DeviceIoMemRead (
+ IN EFI_DEVICE_IO_PROTOCOL *This,
+ IN EFI_IO_WIDTH Width,
+ IN UINT64 Address,
+ IN UINTN Count,
+ IN OUT VOID *Buffer
+ )
+{
+ EFI_STATUS Status;
+ DEVICE_IO_PRIVATE_DATA *Private;
+
+ Private = DEVICE_IO_PRIVATE_DATA_FROM_THIS (This);
+
+ if (Width > MMIO_COPY_UINT64) {
+ return EFI_INVALID_PARAMETER;
+ }
+ if (Width >= MMIO_COPY_UINT8) {
+ Width = Width - MMIO_COPY_UINT8;
+ Status = Private->PciRootBridgeIo->CopyMem (
+ Private->PciRootBridgeIo,
+ (EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH) Width,
+ (UINT64) (UINTN) Buffer,
+ Address,
+ Count
+ );
+ } else {
+ Status = Private->PciRootBridgeIo->Mem.Read (
+ Private->PciRootBridgeIo,
+ (EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH) Width,
+ Address,
+ Count,
+ Buffer
+ );
+ }
+
+ return Status;
+}
+
+
+
+
+/**
+ Perform writing memory mapped I/O space of device.
+
+ @param This A pointer to EFI_DEVICE_IO protocol instance.
+ @param Width Width of I/O operations.
+ @param Address The base address of I/O operations.
+ @param Count The number of I/O operations to perform. Bytes
+ moves is Width size * Count, starting at Address.
+ @param Buffer The source buffer of data to be written.
+
+ @retval EFI_SUCCESS The data was written to the device.
+ @retval EFI_INVALID_PARAMETER Width is invalid.
+ @retval EFI_OUT_OF_RESOURCES The request could not be completed due to lack of
+ resources.
+
+**/
+EFI_STATUS
+EFIAPI
+DeviceIoMemWrite (
+ IN EFI_DEVICE_IO_PROTOCOL *This,
+ IN EFI_IO_WIDTH Width,
+ IN UINT64 Address,
+ IN UINTN Count,
+ IN OUT VOID *Buffer
+ )
+{
+ EFI_STATUS Status;
+ DEVICE_IO_PRIVATE_DATA *Private;
+
+ Private = DEVICE_IO_PRIVATE_DATA_FROM_THIS (This);
+
+ if (Width > MMIO_COPY_UINT64) {
+ return EFI_INVALID_PARAMETER;
+ }
+ if (Width >= MMIO_COPY_UINT8) {
+ Width = Width - MMIO_COPY_UINT8;
+ Status = Private->PciRootBridgeIo->CopyMem (
+ Private->PciRootBridgeIo,
+ (EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH) Width,
+ Address,
+ (UINT64) (UINTN) Buffer,
+ Count
+ );
+ } else {
+ Status = Private->PciRootBridgeIo->Mem.Write (
+ Private->PciRootBridgeIo,
+ (EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH) Width,
+ Address,
+ Count,
+ Buffer
+ );
+ }
+
+ return Status;
+}
+
+
+/**
+ Perform reading I/O space of device.
+
+ @param This A pointer to EFI_DEVICE_IO protocol instance.
+ @param Width Width of I/O operations.
+ @param Address The base address of I/O operations.
+ @param Count The number of I/O operations to perform. Bytes
+ moves is Width size * Count, starting at Address.
+ @param Buffer The destination buffer to store results.
+
+ @retval EFI_SUCCESS The data was read from the device.
+ @retval EFI_INVALID_PARAMETER Width is invalid.
+ @retval EFI_OUT_OF_RESOURCES The request could not be completed due to lack of
+ resources.
+
+**/
+EFI_STATUS
+EFIAPI
+DeviceIoIoRead (
+ IN EFI_DEVICE_IO_PROTOCOL *This,
+ IN EFI_IO_WIDTH Width,
+ IN UINT64 Address,
+ IN UINTN Count,
+ IN OUT VOID *Buffer
+ )
+{
+ EFI_STATUS Status;
+ DEVICE_IO_PRIVATE_DATA *Private;
+
+ Private = DEVICE_IO_PRIVATE_DATA_FROM_THIS (This);
+
+ if (Width >= MMIO_COPY_UINT8) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ Status = Private->PciRootBridgeIo->Io.Read (
+ Private->PciRootBridgeIo,
+ (EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH) Width,
+ Address,
+ Count,
+ Buffer
+ );
+
+ return Status;
+}
+
+
+/**
+ Perform writing I/O space of device.
+
+ @param This A pointer to EFI_DEVICE_IO protocol instance.
+ @param Width Width of I/O operations.
+ @param Address The base address of I/O operations.
+ @param Count The number of I/O operations to perform. Bytes
+ moves is Width size * Count, starting at Address.
+ @param Buffer The source buffer of data to be written.
+
+ @retval EFI_SUCCESS The data was written to the device.
+ @retval EFI_INVALID_PARAMETER Width is invalid.
+ @retval EFI_OUT_OF_RESOURCES The request could not be completed due to lack of
+ resources.
+
+**/
+EFI_STATUS
+EFIAPI
+DeviceIoIoWrite (
+ IN EFI_DEVICE_IO_PROTOCOL *This,
+ IN EFI_IO_WIDTH Width,
+ IN UINT64 Address,
+ IN UINTN Count,
+ IN OUT VOID *Buffer
+ )
+{
+ EFI_STATUS Status;
+ DEVICE_IO_PRIVATE_DATA *Private;
+
+ Private = DEVICE_IO_PRIVATE_DATA_FROM_THIS (This);
+
+ if (Width >= MMIO_COPY_UINT8) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ Status = Private->PciRootBridgeIo->Io.Write (
+ Private->PciRootBridgeIo,
+ (EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH) Width,
+ Address,
+ Count,
+ Buffer
+ );
+
+ return Status;
+}
+
+
+/**
+ Perform reading PCI configuration space of device
+
+ @param This A pointer to EFI_DEVICE_IO protocol instance.
+ @param Width Width of I/O operations.
+ @param Address The base address of I/O operations.
+ @param Count The number of I/O operations to perform. Bytes
+ moves is Width size * Count, starting at Address.
+ @param Buffer The destination buffer to store results.
+
+ @retval EFI_SUCCESS The data was read from the device.
+ @retval EFI_INVALID_PARAMETER Width is invalid.
+ @retval EFI_OUT_OF_RESOURCES The request could not be completed due to lack of
+ resources.
+
+**/
+EFI_STATUS
+EFIAPI
+DeviceIoPciRead (
+ IN EFI_DEVICE_IO_PROTOCOL *This,
+ IN EFI_IO_WIDTH Width,
+ IN UINT64 Address,
+ IN UINTN Count,
+ IN OUT VOID *Buffer
+ )
+{
+ EFI_STATUS Status;
+ DEVICE_IO_PRIVATE_DATA *Private;
+
+ Private = DEVICE_IO_PRIVATE_DATA_FROM_THIS (This);
+
+ if (Width < 0 || Width >= MMIO_COPY_UINT8) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ Status = Private->PciRootBridgeIo->Pci.Read (
+ Private->PciRootBridgeIo,
+ (EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH) Width,
+ Address,
+ Count,
+ Buffer
+ );
+
+ return Status;
+}
+
+
+/**
+ Perform writing PCI configuration space of device.
+
+ @param This A pointer to EFI_DEVICE_IO protocol instance.
+ @param Width Width of I/O operations.
+ @param Address The base address of I/O operations.
+ @param Count The number of I/O operations to perform. Bytes
+ moves is Width size * Count, starting at Address.
+ @param Buffer The source buffer of data to be written.
+
+ @retval EFI_SUCCESS The data was written to the device.
+ @retval EFI_INVALID_PARAMETER Width is invalid.
+ @retval EFI_OUT_OF_RESOURCES The request could not be completed due to lack of
+ resources.
+
+**/
+EFI_STATUS
+EFIAPI
+DeviceIoPciWrite (
+ IN EFI_DEVICE_IO_PROTOCOL *This,
+ IN EFI_IO_WIDTH Width,
+ IN UINT64 Address,
+ IN UINTN Count,
+ IN OUT VOID *Buffer
+ )
+{
+ EFI_STATUS Status;
+ DEVICE_IO_PRIVATE_DATA *Private;
+
+ Private = DEVICE_IO_PRIVATE_DATA_FROM_THIS (This);
+
+ if (Width < 0 || Width >= MMIO_COPY_UINT8) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ Status = Private->PciRootBridgeIo->Pci.Write (
+ Private->PciRootBridgeIo,
+ (EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH) Width,
+ Address,
+ Count,
+ Buffer
+ );
+
+ return Status;
+}
+
+
+/**
+ Append a PCI device path node to another device path.
+
+ @param Private A pointer to DEVICE_IO_PRIVATE_DATA instance.
+ @param Bus PCI bus number of the device.
+ @param Device PCI device number of the device.
+ @param Function PCI function number of the device.
+ @param DevicePath Original device path which will be appended a PCI
+ device path node.
+ @param BridgePrimaryBus Primary bus number of the bridge.
+ @param BridgeSubordinateBus Subordinate bus number of the bridge.
+
+ @return Pointer to the appended PCI device path.
+
+**/
+EFI_DEVICE_PATH_PROTOCOL *
+AppendPciDevicePath (
+ IN DEVICE_IO_PRIVATE_DATA *Private,
+ IN UINT8 Bus,
+ IN UINT8 Device,
+ IN UINT8 Function,
+ IN EFI_DEVICE_PATH_PROTOCOL *DevicePath,
+ IN OUT UINT16 *BridgePrimaryBus,
+ IN OUT UINT16 *BridgeSubordinateBus
+ )
+{
+ UINT16 ThisBus;
+ UINT8 ThisDevice;
+ UINT8 ThisFunc;
+ UINT64 Address;
+ PCI_TYPE01 PciBridge;
+ PCI_TYPE01 *PciPtr;
+ EFI_DEVICE_PATH_PROTOCOL *ReturnDevicePath;
+ PCI_DEVICE_PATH PciNode;
+
+ PciPtr = &PciBridge;
+ for (ThisBus = *BridgePrimaryBus; ThisBus <= *BridgeSubordinateBus; ThisBus++) {
+ for (ThisDevice = 0; ThisDevice <= PCI_MAX_DEVICE; ThisDevice++) {
+ for (ThisFunc = 0; ThisFunc <= PCI_MAX_FUNC; ThisFunc++) {
+ Address = EFI_PCI_ADDRESS (ThisBus, ThisDevice, ThisFunc, 0);
+ ZeroMem (PciPtr, sizeof (PCI_TYPE01));
+ Private->DeviceIo.Pci.Read (
+ &Private->DeviceIo,
+ IO_UINT32,
+ Address,
+ 1,
+ &(PciPtr->Hdr.VendorId)
+ );
+ if ((PciPtr->Hdr.VendorId == 0xffff) && (ThisFunc == 0)) {
+ break;
+ }
+ if (PciPtr->Hdr.VendorId == 0xffff) {
+ continue;
+ } else {
+ Private->DeviceIo.Pci.Read (
+ &Private->DeviceIo,
+ IO_UINT32,
+ Address,
+ sizeof (PCI_TYPE01) / sizeof (UINT32),
+ PciPtr
+ );
+ if (IS_PCI_BRIDGE (PciPtr)) {
+ if (Bus >= PciPtr->Bridge.SecondaryBus && Bus <= PciPtr->Bridge.SubordinateBus) {
+
+ PciNode.Header.Type = HARDWARE_DEVICE_PATH;
+ PciNode.Header.SubType = HW_PCI_DP;
+ SetDevicePathNodeLength (&PciNode.Header, sizeof (PciNode));
+
+ PciNode.Device = ThisDevice;
+ PciNode.Function = ThisFunc;
+ ReturnDevicePath = AppendDevicePathNode (DevicePath, &PciNode.Header);
+
+ *BridgePrimaryBus = PciPtr->Bridge.SecondaryBus;
+ *BridgeSubordinateBus = PciPtr->Bridge.SubordinateBus;
+ return ReturnDevicePath;
+ }
+ }
+ if (ThisFunc == 0 && !(PciPtr->Hdr.HeaderType & HEADER_TYPE_MULTI_FUNCTION)) {
+ //
+ // Skip sub functions, this is not a multi function device
+ //
+ ThisFunc = 8;
+ }
+ }
+ }
+ }
+ }
+
+ ZeroMem (&PciNode, sizeof (PciNode));
+ PciNode.Header.Type = HARDWARE_DEVICE_PATH;
+ PciNode.Header.SubType = HW_PCI_DP;
+ SetDevicePathNodeLength (&PciNode.Header, sizeof (PciNode));
+ PciNode.Device = Device;
+ PciNode.Function = Function;
+
+ ReturnDevicePath = AppendDevicePathNode (DevicePath, &PciNode.Header);
+
+ *BridgePrimaryBus = 0xffff;
+ *BridgeSubordinateBus = 0xffff;
+ return ReturnDevicePath;
+}
+
+
+/**
+ Provides an EFI Device Path for a PCI device with the given PCI configuration space address.
+
+ @param This A pointer to the EFI_DEVICE_IO_INTERFACE instance.
+ @param Address The PCI configuration space address of the device
+ whose Device Path is going to be returned.
+ @param PciDevicePath A pointer to the pointer for the EFI Device Path
+ for PciAddress. Memory for the Device Path is
+ allocated from the pool.
+
+ @retval EFI_SUCCESS The PciDevicePath returns a pointer to a valid EFI
+ Device Path.
+ @retval EFI_UNSUPPORTED The PciAddress does not map to a valid EFI Device
+ Path.
+ @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack
+ of resources.
+
+**/
+EFI_STATUS
+EFIAPI
+DeviceIoPciDevicePath (
+ IN EFI_DEVICE_IO_PROTOCOL *This,
+ IN UINT64 Address,
+ IN OUT EFI_DEVICE_PATH_PROTOCOL **PciDevicePath
+ )
+{
+ DEVICE_IO_PRIVATE_DATA *Private;
+ UINT16 PrimaryBus;
+ UINT16 SubordinateBus;
+ UINT8 Bus;
+ UINT8 Device;
+ UINT8 Func;
+
+ Private = DEVICE_IO_PRIVATE_DATA_FROM_THIS (This);
+
+ Bus = (UINT8) (((UINT32) Address >> 24) & 0xff);
+ Device = (UINT8) (((UINT32) Address >> 16) & 0xff);
+ Func = (UINT8) (((UINT32) Address >> 8) & 0xff);
+
+ if (Bus < Private->PrimaryBus || Bus > Private->SubordinateBus) {
+ return EFI_UNSUPPORTED;
+ }
+
+ *PciDevicePath = Private->DevicePath;
+ PrimaryBus = Private->PrimaryBus;
+ SubordinateBus = Private->SubordinateBus;
+ do {
+ *PciDevicePath = AppendPciDevicePath (
+ Private,
+ Bus,
+ Device,
+ Func,
+ *PciDevicePath,
+ &PrimaryBus,
+ &SubordinateBus
+ );
+ if (*PciDevicePath == NULL) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+ } while (PrimaryBus != 0xffff);
+
+ return EFI_SUCCESS;
+}
+
+
+/**
+ Provides the device-specific addresses needed to access system memory.
+
+ @param This A pointer to the EFI_DEVICE_IO_INTERFACE instance.
+ @param Operation Indicates if the bus master is going to read or
+ write to system memory.
+ @param HostAddress The system memory address to map to the device.
+ @param NumberOfBytes On input the number of bytes to map. On output the
+ number of bytes that were mapped.
+ @param DeviceAddress The resulting map address for the bus master
+ device to use to access the hosts HostAddress.
+ @param Mapping A resulting value to pass to Unmap().
+
+ @retval EFI_SUCCESS The range was mapped for the returned
+ NumberOfBytes.
+ @retval EFI_INVALID_PARAMETER The Operation or HostAddress is undefined.
+ @retval EFI_UNSUPPORTED The HostAddress cannot be mapped as a common
+ buffer.
+ @retval EFI_DEVICE_ERROR The system hardware could not map the requested
+ address.
+ @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack
+ of resources.
+
+**/
+EFI_STATUS
+EFIAPI
+DeviceIoMap (
+ IN EFI_DEVICE_IO_PROTOCOL *This,
+ IN EFI_IO_OPERATION_TYPE Operation,
+ IN EFI_PHYSICAL_ADDRESS *HostAddress,
+ IN OUT UINTN *NumberOfBytes,
+ OUT EFI_PHYSICAL_ADDRESS *DeviceAddress,
+ OUT VOID **Mapping
+ )
+{
+ EFI_STATUS Status;
+ DEVICE_IO_PRIVATE_DATA *Private;
+
+ Private = DEVICE_IO_PRIVATE_DATA_FROM_THIS (This);
+
+ if (Operation < 0 || Operation > EfiBusMasterCommonBuffer) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ if (((UINTN) (*HostAddress) != (*HostAddress)) && Operation == EfiBusMasterCommonBuffer) {
+ return EFI_UNSUPPORTED;
+ }
+
+ Status = Private->PciRootBridgeIo->Map (
+ Private->PciRootBridgeIo,
+ (EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_OPERATION) Operation,
+ (VOID *) (UINTN) (*HostAddress),
+ NumberOfBytes,
+ DeviceAddress,
+ Mapping
+ );
+
+ return Status;
+}
+
+
+/**
+ Completes the Map() operation and releases any corresponding resources.
+
+ @param This A pointer to the EFI_DEVICE_IO_INTERFACE instance.
+ @param Mapping The mapping value returned from Map().
+
+ @retval EFI_SUCCESS The range was unmapped.
+ @retval EFI_DEVICE_ERROR The data was not committed to the target system
+ memory.
+
+**/
+EFI_STATUS
+EFIAPI
+DeviceIoUnmap (
+ IN EFI_DEVICE_IO_PROTOCOL *This,
+ IN VOID *Mapping
+ )
+{
+ EFI_STATUS Status;
+ DEVICE_IO_PRIVATE_DATA *Private;
+
+ Private = DEVICE_IO_PRIVATE_DATA_FROM_THIS (This);
+
+ Status = Private->PciRootBridgeIo->Unmap (
+ Private->PciRootBridgeIo,
+ Mapping
+ );
+
+ return Status;
+}
+
+
+/**
+ Allocates pages that are suitable for an EFIBusMasterCommonBuffer mapping.
+
+ @param This A pointer to the EFI_DEVICE_IO_INTERFACE instance.
+ @param Type The type allocation to perform.
+ @param MemoryType The type of memory to allocate,
+ EfiBootServicesData or EfiRuntimeServicesData.
+ @param Pages The number of pages to allocate.
+ @param PhysicalAddress A pointer to store the base address of the
+ allocated range.
+
+ @retval EFI_SUCCESS The requested memory pages were allocated.
+ @retval EFI_OUT_OF_RESOURCES The memory pages could not be allocated.
+ @retval EFI_INVALID_PARAMETER The requested memory type is invalid.
+ @retval EFI_UNSUPPORTED The requested PhysicalAddress is not supported on
+ this platform.
+
+**/
+EFI_STATUS
+EFIAPI
+DeviceIoAllocateBuffer (
+ IN EFI_DEVICE_IO_PROTOCOL *This,
+ IN EFI_ALLOCATE_TYPE Type,
+ IN EFI_MEMORY_TYPE MemoryType,
+ IN UINTN Pages,
+ IN OUT EFI_PHYSICAL_ADDRESS *PhysicalAddress
+ )
+{
+ EFI_STATUS Status;
+ EFI_PHYSICAL_ADDRESS HostAddress;
+
+ HostAddress = *PhysicalAddress;
+
+ if ((MemoryType != EfiBootServicesData) && (MemoryType != EfiRuntimeServicesData)) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ if ((Type >= MaxAllocateType) || (Type < AllocateAnyPages)) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ if ((Type == AllocateAddress) && (HostAddress + EFI_PAGES_TO_SIZE (Pages) - 1 > MAX_COMMON_BUFFER)) {
+ return EFI_UNSUPPORTED;
+ }
+
+ if ((AllocateAnyPages == Type) || (AllocateMaxAddress == Type && HostAddress > MAX_COMMON_BUFFER)) {
+ Type = AllocateMaxAddress;
+ HostAddress = MAX_COMMON_BUFFER;
+ }
+
+ Status = gBS->AllocatePages (
+ Type,
+ MemoryType,
+ Pages,
+ &HostAddress
+ );
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+
+ *PhysicalAddress = HostAddress;
+
+ return EFI_SUCCESS;
+}
+
+
+/**
+ Flushes any posted write data to the device.
+
+ @param This A pointer to the EFI_DEVICE_IO_INTERFACE instance.
+
+ @retval EFI_SUCCESS The buffers were flushed.
+ @retval EFI_DEVICE_ERROR The buffers were not flushed due to a hardware
+ error.
+
+**/
+EFI_STATUS
+EFIAPI
+DeviceIoFlush (
+ IN EFI_DEVICE_IO_PROTOCOL *This
+ )
+{
+ EFI_STATUS Status;
+ DEVICE_IO_PRIVATE_DATA *Private;
+
+ Private = DEVICE_IO_PRIVATE_DATA_FROM_THIS (This);
+
+ Status = Private->PciRootBridgeIo->Flush (Private->PciRootBridgeIo);
+
+ return Status;
+}
+
+
+/**
+ Frees pages that were allocated with AllocateBuffer().
+
+ @param This A pointer to the EFI_DEVICE_IO_INTERFACE instance.
+ @param Pages The number of pages to free.
+ @param HostAddress The base address of the range to free.
+
+ @retval EFI_SUCCESS The requested memory pages were freed.
+ @retval EFI_NOT_FOUND The requested memory pages were not allocated with
+ AllocateBuffer().
+ @retval EFI_INVALID_PARAMETER HostAddress is not page aligned or Pages is
+ invalid.
+
+**/
+EFI_STATUS
+EFIAPI
+DeviceIoFreeBuffer (
+ IN EFI_DEVICE_IO_PROTOCOL *This,
+ IN UINTN Pages,
+ IN EFI_PHYSICAL_ADDRESS HostAddress
+ )
+{
+ if (((HostAddress & EFI_PAGE_MASK) != 0) || (Pages <= 0)) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ return gBS->FreePages (HostAddress, Pages);
+}
+
diff --git a/EdkCompatibilityPkg/Compatibility/DeviceIoToPciRootBridgeIoThunk/DeviceIoToPciRootBridgeIoThunk.inf b/EdkCompatibilityPkg/Compatibility/DeviceIoToPciRootBridgeIoThunk/DeviceIoToPciRootBridgeIoThunk.inf
new file mode 100644
index 0000000000..205f9f1004
--- /dev/null
+++ b/EdkCompatibilityPkg/Compatibility/DeviceIoToPciRootBridgeIoThunk/DeviceIoToPciRootBridgeIoThunk.inf
@@ -0,0 +1,61 @@
+#/** @file
+# Module Layer Device I/O on top of PCI Root Bridge I/O (Segment 0)
+#
+# Device I/O is on list of deprecated protocols for UEFI 2.0 and later.
+# This module module layers Device I/O on top of PCI Root Bridge I/O (Segment 0)
+# Use if:
+# There are no R8.x modules present that produces Device I/O
+# EFI drivers included that consume Device I/O
+# Platform required to support EFI drivers that consume Device I/O
+# Platform required to support EFI applications that consume Device I/O
+#
+# Copyright (c) 2008, Intel Corporation
+#
+# All rights reserved. This program and the accompanying materials
+# are licensed and made available under the terms and conditions of the BSD License
+# which accompanies this distribution. The full text of the license may be found at
+# http://opensource.org/licenses/bsd-license.php
+# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+#
+#
+#**/
+
+[Defines]
+ INF_VERSION = 0x00010005
+ BASE_NAME = DeviceIoToPciRootBridgeIoThunk
+ FILE_GUID = 6E5ED30F-EC52-4136-8A41-3F4324218E41
+ MODULE_TYPE = DXE_DRIVER
+ VERSION_STRING = 1.0
+ EDK_RELEASE_VERSION = 0x00020000
+ EFI_SPECIFICATION_VERSION = 0x00020000
+ ENTRY_POINT = InitializeDeviceIo
+
+#
+# The following information is for reference only and not required by the build tools.
+#
+# VALID_ARCHITECTURES = IA32 X64 IPF EBC
+#
+
+[Sources.common]
+ DeviceIoToPciRootBridgeIoThunk.c
+
+[Packages]
+ MdePkg/MdePkg.dec
+
+[LibraryClasses]
+ UefiDriverEntryPoint
+ UefiBootServicesTableLib
+ BaseLib
+ DebugLib
+ UefiLib
+ MemoryAllocationLib
+ BaseMemoryLib
+ DevicePathLib
+
+[Protocols]
+ gEfiDeviceIoProtocolGuid
+ gEfiPciRootBridgeIoProtocolGuid
+
+[Depex]
+ TRUE