mirror of
https://github.com/acidanthera/audk.git
synced 2025-07-25 22:54:51 +02:00
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>
This commit is contained in:
parent
2f16993c25
commit
2b620ee1ff
196
MdeModulePkg/Include/Ppi/IoMmu.h
Normal file
196
MdeModulePkg/Include/Ppi/IoMmu.h
Normal file
@ -0,0 +1,196 @@
|
||||
/** @file
|
||||
PEI IOMMU PPI.
|
||||
|
||||
Copyright (c) 2017, Intel Corporation. All rights reserved.<BR>
|
||||
This program and the accompanying materials are licensed and made available under
|
||||
the terms and conditions of the BSD License that 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.
|
||||
|
||||
**/
|
||||
|
||||
|
||||
#ifndef __PEI_IOMMU_H__
|
||||
#define __PEI_IOMMU_H__
|
||||
|
||||
//
|
||||
// for EFI_ALLOCATE_TYPE
|
||||
//
|
||||
#include <Uefi.h>
|
||||
|
||||
//
|
||||
// Include protocol for common definition
|
||||
// EDKII_IOMMU_ACCESS_xxx
|
||||
// EDKII_IOMMU_OPERATION
|
||||
//
|
||||
#include <Protocol/IoMmu.h>
|
||||
|
||||
//
|
||||
// IOMMU Ppi GUID value
|
||||
//
|
||||
#define EDKII_IOMMU_PPI_GUID \
|
||||
{ \
|
||||
0x70b0af26, 0xf847, 0x4bb6, { 0xaa, 0xb9, 0xcd, 0xe8, 0x4f, 0xc6, 0x14, 0x31 } \
|
||||
}
|
||||
|
||||
//
|
||||
// Forward reference for pure ANSI compatability
|
||||
//
|
||||
typedef struct _EDKII_IOMMU_PPI EDKII_IOMMU_PPI;
|
||||
|
||||
//
|
||||
// Revision The revision to which the IOMMU interface adheres.
|
||||
// All future revisions must be backwards compatible.
|
||||
// If a future version is not back wards compatible it is not the same GUID.
|
||||
//
|
||||
#define EDKII_IOMMU_PPI_REVISION 0x00010000
|
||||
|
||||
/**
|
||||
Set IOMMU attribute for a system memory.
|
||||
|
||||
If the IOMMU PPI exists, the system memory cannot be used
|
||||
for DMA by default.
|
||||
|
||||
When a device requests a DMA access for a system memory,
|
||||
the device driver need use SetAttribute() to update the IOMMU
|
||||
attribute to request DMA access (read and/or write).
|
||||
|
||||
@param[in] This The PPI instance pointer.
|
||||
@param[in] Mapping The mapping value returned from Map().
|
||||
@param[in] IoMmuAccess The IOMMU access.
|
||||
|
||||
@retval EFI_SUCCESS The IoMmuAccess is set for the memory range specified by DeviceAddress and Length.
|
||||
@retval EFI_INVALID_PARAMETER Mapping is not a value that was returned by Map().
|
||||
@retval EFI_INVALID_PARAMETER IoMmuAccess specified an illegal combination of access.
|
||||
@retval EFI_UNSUPPORTED The bit mask of IoMmuAccess is not supported by the IOMMU.
|
||||
@retval EFI_UNSUPPORTED The IOMMU does not support the memory range specified by Mapping.
|
||||
@retval EFI_OUT_OF_RESOURCES There are not enough resources available to modify the IOMMU access.
|
||||
@retval EFI_DEVICE_ERROR The IOMMU device reported an error while attempting the operation.
|
||||
|
||||
**/
|
||||
typedef
|
||||
EFI_STATUS
|
||||
(EFIAPI *EDKII_PEI_IOMMU_SET_ATTRIBUTE)(
|
||||
IN EDKII_IOMMU_PPI *This,
|
||||
IN VOID *Mapping,
|
||||
IN UINT64 IoMmuAccess
|
||||
);
|
||||
|
||||
/**
|
||||
Provides the controller-specific addresses required to access system memory from a
|
||||
DMA bus master.
|
||||
|
||||
@param This The PPI instance pointer.
|
||||
@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 PCI controller.
|
||||
@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 PCI controller 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_UNSUPPORTED The HostAddress cannot be mapped as a common buffer.
|
||||
@retval EFI_INVALID_PARAMETER One or more parameters are invalid.
|
||||
@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.
|
||||
@retval EFI_DEVICE_ERROR The system hardware could not map the requested address.
|
||||
|
||||
**/
|
||||
typedef
|
||||
EFI_STATUS
|
||||
(EFIAPI *EDKII_PEI_IOMMU_MAP)(
|
||||
IN EDKII_IOMMU_PPI *This,
|
||||
IN EDKII_IOMMU_OPERATION Operation,
|
||||
IN VOID *HostAddress,
|
||||
IN OUT UINTN *NumberOfBytes,
|
||||
OUT EFI_PHYSICAL_ADDRESS *DeviceAddress,
|
||||
OUT VOID **Mapping
|
||||
);
|
||||
|
||||
/**
|
||||
Completes the Map() operation and releases any corresponding resources.
|
||||
|
||||
@param This The PPI instance pointer.
|
||||
@param Mapping The mapping value returned from Map().
|
||||
|
||||
@retval EFI_SUCCESS The range was unmapped.
|
||||
@retval EFI_INVALID_PARAMETER Mapping is not a value that was returned by Map().
|
||||
@retval EFI_DEVICE_ERROR The data was not committed to the target system memory.
|
||||
**/
|
||||
typedef
|
||||
EFI_STATUS
|
||||
(EFIAPI *EDKII_PEI_IOMMU_UNMAP)(
|
||||
IN EDKII_IOMMU_PPI *This,
|
||||
IN VOID *Mapping
|
||||
);
|
||||
|
||||
/**
|
||||
Allocates pages that are suitable for an OperationBusMasterCommonBuffer or
|
||||
OperationBusMasterCommonBuffer64 mapping.
|
||||
|
||||
@param This The PPI instance pointer.
|
||||
@param MemoryType The type of memory to allocate, EfiBootServicesData or
|
||||
EfiRuntimeServicesData.
|
||||
@param Pages The number of pages to allocate.
|
||||
@param HostAddress A pointer to store the base system memory address of the
|
||||
allocated range.
|
||||
@param Attributes The requested bit mask of attributes for the allocated range.
|
||||
|
||||
@retval EFI_SUCCESS The requested memory pages were allocated.
|
||||
@retval EFI_UNSUPPORTED Attributes is unsupported. The only legal attribute bits are
|
||||
MEMORY_WRITE_COMBINE and MEMORY_CACHED.
|
||||
@retval EFI_INVALID_PARAMETER One or more parameters are invalid.
|
||||
@retval EFI_OUT_OF_RESOURCES The memory pages could not be allocated.
|
||||
|
||||
**/
|
||||
typedef
|
||||
EFI_STATUS
|
||||
(EFIAPI *EDKII_PEI_IOMMU_ALLOCATE_BUFFER)(
|
||||
IN EDKII_IOMMU_PPI *This,
|
||||
IN EFI_MEMORY_TYPE MemoryType,
|
||||
IN UINTN Pages,
|
||||
IN OUT VOID **HostAddress,
|
||||
IN UINT64 Attributes
|
||||
);
|
||||
|
||||
/**
|
||||
Frees memory that was allocated with AllocateBuffer().
|
||||
|
||||
@param This The protocol instance pointer.
|
||||
@param Pages The number of pages to free.
|
||||
@param HostAddress The base system memory address of the allocated range.
|
||||
|
||||
@retval EFI_SUCCESS The requested memory pages were freed.
|
||||
@retval EFI_INVALID_PARAMETER The memory range specified by HostAddress and Pages
|
||||
was not allocated with AllocateBuffer().
|
||||
|
||||
**/
|
||||
typedef
|
||||
EFI_STATUS
|
||||
(EFIAPI *EDKII_PEI_IOMMU_FREE_BUFFER)(
|
||||
IN EDKII_IOMMU_PPI *This,
|
||||
IN UINTN Pages,
|
||||
IN VOID *HostAddress
|
||||
);
|
||||
|
||||
///
|
||||
/// IOMMU PPI structure.
|
||||
///
|
||||
struct _EDKII_IOMMU_PPI {
|
||||
UINT64 Revision;
|
||||
EDKII_PEI_IOMMU_SET_ATTRIBUTE SetAttribute;
|
||||
EDKII_PEI_IOMMU_MAP Map;
|
||||
EDKII_PEI_IOMMU_UNMAP Unmap;
|
||||
EDKII_PEI_IOMMU_ALLOCATE_BUFFER AllocateBuffer;
|
||||
EDKII_PEI_IOMMU_FREE_BUFFER FreeBuffer;
|
||||
};
|
||||
|
||||
///
|
||||
/// IOMMU PPI GUID variable.
|
||||
///
|
||||
extern EFI_GUID gEdkiiIoMmuPpiGuid;
|
||||
|
||||
#endif
|
Loading…
x
Reference in New Issue
Block a user