MdeModulePkg/Include: Add IOMMU_PPI.

This IOMMU_PPI is to provide IOMMU abstraction in PEI.

Cc: Star Zeng <star.zeng@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Jiewen Yao <jiewen.yao@intel.com>
Reviewed-by: Star Zeng <star.zeng@intel.com>

diff --git a/MdeModulePkg/Include/Ppi/IoMmu.h b/MdeModulePkg/Include/Ppi/IoMmu.h
new file mode 100644 (file)
index 0000000..5303d68
--- /dev/null
+++ b/MdeModulePkg/Include/Ppi/IoMmu.h
@@ -0,0 +1,196 @@
+/** @file\r
+  PEI IOMMU PPI.\r
+\r
+Copyright (c) 2017, Intel Corporation. All rights reserved.<BR>\r
+This program and the accompanying materials are licensed and made available under\r
+the terms and conditions of the BSD License that accompanies this distribution.\r
+The full text of the license may be found at\r
+http://opensource.org/licenses/bsd-license.php.\r
+\r
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+\r
+**/\r
+\r
+\r
+#ifndef __PEI_IOMMU_H__\r
+#define __PEI_IOMMU_H__\r
+\r
+//\r
+// for EFI_ALLOCATE_TYPE\r
+//\r
+#include <Uefi.h>\r
+\r
+//\r
+// Include protocol for common definition\r
+//   EDKII_IOMMU_ACCESS_xxx\r
+//   EDKII_IOMMU_OPERATION\r
+//\r
+#include <Protocol/IoMmu.h>\r
+\r
+//\r
+// IOMMU Ppi GUID value\r
+//\r
+#define EDKII_IOMMU_PPI_GUID \\r
+    { \\r
+      0x70b0af26, 0xf847, 0x4bb6, { 0xaa, 0xb9, 0xcd, 0xe8, 0x4f, 0xc6, 0x14, 0x31 } \\r
+    }\r
+\r
+//\r
+// Forward reference for pure ANSI compatability\r
+//\r
+typedef struct _EDKII_IOMMU_PPI  EDKII_IOMMU_PPI;\r
+\r
+//\r
+// Revision The revision to which the IOMMU interface adheres.\r
+//          All future revisions must be backwards compatible.\r
+//          If a future version is not back wards compatible it is not the same GUID.\r
+//\r
+#define EDKII_IOMMU_PPI_REVISION 0x00010000\r
+\r
+/**\r
+  Set IOMMU attribute for a system memory.\r
+\r
+  If the IOMMU PPI exists, the system memory cannot be used\r
+  for DMA by default.\r
+\r
+  When a device requests a DMA access for a system memory,\r
+  the device driver need use SetAttribute() to update the IOMMU\r
+  attribute to request DMA access (read and/or write).\r
+\r
+  @param[in]  This              The PPI instance pointer.\r
+  @param[in]  Mapping           The mapping value returned from Map().\r
+  @param[in]  IoMmuAccess       The IOMMU access.\r
+\r
+  @retval EFI_SUCCESS            The IoMmuAccess is set for the memory range specified by DeviceAddress and Length.\r
+  @retval EFI_INVALID_PARAMETER  Mapping is not a value that was returned by Map().\r
+  @retval EFI_INVALID_PARAMETER  IoMmuAccess specified an illegal combination of access.\r
+  @retval EFI_UNSUPPORTED        The bit mask of IoMmuAccess is not supported by the IOMMU.\r
+  @retval EFI_UNSUPPORTED        The IOMMU does not support the memory range specified by Mapping.\r
+  @retval EFI_OUT_OF_RESOURCES   There are not enough resources available to modify the IOMMU access.\r
+  @retval EFI_DEVICE_ERROR       The IOMMU device reported an error while attempting the operation.\r
+\r
+**/\r
+typedef\r
+EFI_STATUS\r
+(EFIAPI *EDKII_PEI_IOMMU_SET_ATTRIBUTE)(\r
+  IN EDKII_IOMMU_PPI       *This,\r
+  IN VOID                  *Mapping,\r
+  IN UINT64                IoMmuAccess\r
+  );\r
+\r
+/**\r
+  Provides the controller-specific addresses required to access system memory from a\r
+  DMA bus master.\r
+\r
+  @param  This                  The PPI instance pointer.\r
+  @param  Operation             Indicates if the bus master is going to read or write to system memory.\r
+  @param  HostAddress           The system memory address to map to the PCI controller.\r
+  @param  NumberOfBytes         On input the number of bytes to map. On output the number of bytes\r
+                                that were mapped.\r
+  @param  DeviceAddress         The resulting map address for the bus master PCI controller to use to\r
+                                access the hosts HostAddress.\r
+  @param  Mapping               A resulting value to pass to Unmap().\r
+\r
+  @retval EFI_SUCCESS           The range was mapped for the returned NumberOfBytes.\r
+  @retval EFI_UNSUPPORTED       The HostAddress cannot be mapped as a common buffer.\r
+  @retval EFI_INVALID_PARAMETER One or more parameters are invalid.\r
+  @retval EFI_OUT_OF_RESOURCES  The request could not be completed due to a lack of resources.\r
+  @retval EFI_DEVICE_ERROR      The system hardware could not map the requested address.\r
+\r
+**/\r
+typedef\r
+EFI_STATUS\r
+(EFIAPI *EDKII_PEI_IOMMU_MAP)(\r
+  IN     EDKII_IOMMU_PPI                            *This,\r
+  IN     EDKII_IOMMU_OPERATION                      Operation,\r
+  IN     VOID                                       *HostAddress,\r
+  IN OUT UINTN                                      *NumberOfBytes,\r
+  OUT    EFI_PHYSICAL_ADDRESS                       *DeviceAddress,\r
+  OUT    VOID                                       **Mapping\r
+  );\r
+\r
+/**\r
+  Completes the Map() operation and releases any corresponding resources.\r
+\r
+  @param  This                  The PPI instance pointer.\r
+  @param  Mapping               The mapping value returned from Map().\r
+\r
+  @retval EFI_SUCCESS           The range was unmapped.\r
+  @retval EFI_INVALID_PARAMETER Mapping is not a value that was returned by Map().\r
+  @retval EFI_DEVICE_ERROR      The data was not committed to the target system memory.\r
+**/\r
+typedef\r
+EFI_STATUS\r
+(EFIAPI *EDKII_PEI_IOMMU_UNMAP)(\r
+  IN  EDKII_IOMMU_PPI                          *This,\r
+  IN  VOID                                     *Mapping\r
+  );\r
+\r
+/**\r
+  Allocates pages that are suitable for an OperationBusMasterCommonBuffer or\r
+  OperationBusMasterCommonBuffer64 mapping.\r
+\r
+  @param  This                  The PPI instance pointer.\r
+  @param  MemoryType            The type of memory to allocate, EfiBootServicesData or\r
+                                EfiRuntimeServicesData.\r
+  @param  Pages                 The number of pages to allocate.\r
+  @param  HostAddress           A pointer to store the base system memory address of the\r
+                                allocated range.\r
+  @param  Attributes            The requested bit mask of attributes for the allocated range.\r
+\r
+  @retval EFI_SUCCESS           The requested memory pages were allocated.\r
+  @retval EFI_UNSUPPORTED       Attributes is unsupported. The only legal attribute bits are\r
+                                MEMORY_WRITE_COMBINE and MEMORY_CACHED.\r
+  @retval EFI_INVALID_PARAMETER One or more parameters are invalid.\r
+  @retval EFI_OUT_OF_RESOURCES  The memory pages could not be allocated.\r
+\r
+**/\r
+typedef\r
+EFI_STATUS\r
+(EFIAPI *EDKII_PEI_IOMMU_ALLOCATE_BUFFER)(\r
+  IN     EDKII_IOMMU_PPI                          *This,\r
+  IN     EFI_MEMORY_TYPE                          MemoryType,\r
+  IN     UINTN                                    Pages,\r
+  IN OUT VOID                                     **HostAddress,\r
+  IN     UINT64                                   Attributes\r
+  );\r
+\r
+/**\r
+  Frees memory that was allocated with AllocateBuffer().\r
+\r
+  @param  This                  The protocol instance pointer.\r
+  @param  Pages                 The number of pages to free.\r
+  @param  HostAddress           The base system memory address of the allocated range.\r
+\r
+  @retval EFI_SUCCESS           The requested memory pages were freed.\r
+  @retval EFI_INVALID_PARAMETER The memory range specified by HostAddress and Pages\r
+                                was not allocated with AllocateBuffer().\r
+\r
+**/\r
+typedef\r
+EFI_STATUS\r
+(EFIAPI *EDKII_PEI_IOMMU_FREE_BUFFER)(\r
+  IN  EDKII_IOMMU_PPI                          *This,\r
+  IN  UINTN                                    Pages,\r
+  IN  VOID                                     *HostAddress\r
+  );\r
+\r
+///\r
+/// IOMMU PPI structure.\r
+///\r
+struct _EDKII_IOMMU_PPI {\r
+  UINT64                              Revision;\r
+  EDKII_PEI_IOMMU_SET_ATTRIBUTE       SetAttribute;\r
+  EDKII_PEI_IOMMU_MAP                 Map;\r
+  EDKII_PEI_IOMMU_UNMAP               Unmap;\r
+  EDKII_PEI_IOMMU_ALLOCATE_BUFFER     AllocateBuffer;\r
+  EDKII_PEI_IOMMU_FREE_BUFFER         FreeBuffer;\r
+};\r
+\r
+///\r
+/// IOMMU PPI GUID variable.\r
+///\r
+extern EFI_GUID gEdkiiIoMmuPpiGuid;\r
+\r
+#endif\r