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/** @file
The definition for platform VTD policy.
Copyright (c) 2017, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#ifndef __PLATFORM_VTD_POLICY_PROTOCOL_H__
#define __PLATFORM_VTD_POLICY_PROTOCOL_H__
#include <IndustryStandard/Vtd.h>
#include <IndustryStandard/DmaRemappingReportingTable.h>
#define EDKII_PLATFORM_VTD_POLICY_PROTOCOL_GUID \
{ \
0x3d17e448, 0x466, 0x4e20, { 0x99, 0x9f, 0xb2, 0xe1, 0x34, 0x88, 0xee, 0x22 } \
}
typedef struct _EDKII_PLATFORM_VTD_POLICY_PROTOCOL EDKII_PLATFORM_VTD_POLICY_PROTOCOL;
#define EDKII_PLATFORM_VTD_POLICY_PROTOCOL_REVISION 0x00010000
typedef struct {
UINT16 Segment;
VTD_SOURCE_ID SourceId;
} EDKII_PLATFORM_VTD_DEVICE_INFO;
/**
Get the VTD SourceId from the device handler.
This function is required for non PCI device handler.
Pseudo-algo in Intel VTd driver:
Status = PlatformGetVTdDeviceId ();
if (EFI_ERROR(Status)) {
if (DeviceHandle is PCI) {
Get SourceId from Bus/Device/Function
} else {
return EFI_UNSUPPORTED
}
}
Get VTd engine by Segment/Bus/Device/Function.
@param[in] This The protocol instance pointer.
@param[in] DeviceHandle Device Identifier in UEFI.
@param[out] DeviceInfo DeviceInfo for indentify the VTd engine in ACPI Table
and the VTd page entry.
@retval EFI_SUCCESS The VtdIndex and SourceId are returned.
@retval EFI_INVALID_PARAMETER DeviceHandle is not a valid handler.
@retval EFI_INVALID_PARAMETER DeviceInfo is NULL.
@retval EFI_NOT_FOUND The Segment or SourceId information is NOT found.
@retval EFI_UNSUPPORTED This function is not supported.
**/
typedef
EFI_STATUS
(EFIAPI *EDKII_PLATFORM_VTD_POLICY_GET_DEVICE_ID) (
IN EDKII_PLATFORM_VTD_POLICY_PROTOCOL *This,
IN EFI_HANDLE DeviceHandle,
OUT EDKII_PLATFORM_VTD_DEVICE_INFO *DeviceInfo
);
#pragma pack(1)
typedef struct {
//
// The segment number of the device
//
UINT16 SegmentNumber;
//
// Device scope definition in DMAR table
//
EFI_ACPI_DMAR_DEVICE_SCOPE_STRUCTURE_HEADER DeviceScope;
//
// Pci path definition in DMAR table
//
//EFI_ACPI_DMAR_PCI_PATH PciPath[];
} EDKII_PLATFORM_VTD_DEVICE_SCOPE;
typedef struct {
UINT16 VendorId;
UINT16 DeviceId;
UINT8 RevisionId;
UINT16 SubsystemVendorId;
UINT16 SubsystemDeviceId;
} EDKII_PLATFORM_VTD_PCI_DEVICE_ID;
#define EDKII_PLATFORM_VTD_EXCEPTION_DEVICE_INFO_TYPE_END 0
#define EDKII_PLATFORM_VTD_EXCEPTION_DEVICE_INFO_TYPE_DEVICE_SCOPE 1
#define EDKII_PLATFORM_VTD_EXCEPTION_DEVICE_INFO_TYPE_PCI_DEVICE_ID 2
typedef struct {
//
// EDKII_PLATFORM_VTD_EXCEPTION_DEVICE_INFO_TYPE_xxx defined above.
//
UINT8 Type;
//
// The length of the full data structure including EDKII_PLATFORM_VTD_EXCEPTION_DEVICE_INFO and Data.
//
UINT8 Length;
//
// Data can be EDKII_PLATFORM_VTD_DEVICE_SCOPE or EDKII_PLATFORM_VTD_PCI_DEVICE_ID
//
//UINT8 Data[Length - sizeof(EDKII_PLATFORM_VTD_EXCEPTION_DEVICE_INFO)];
} EDKII_PLATFORM_VTD_EXCEPTION_DEVICE_INFO;
#pragma pack()
/**
Get a list of the exception devices.
The VTd driver should always set ALLOW for the device in this list.
@param[in] This The protocol instance pointer.
@param[out] DeviceInfoCount The count of the list of DeviceInfo.
@param[out] DeviceInfo A callee allocated buffer to hold a list of DeviceInfo.
Each DeviceInfo pointer points to EDKII_PLATFORM_VTD_EXCEPTION_DEVICE_INFO.
@retval EFI_SUCCESS The DeviceInfoCount and DeviceInfo are returned.
@retval EFI_INVALID_PARAMETER DeviceInfoCount is NULL, or DeviceInfo is NULL.
@retval EFI_UNSUPPORTED This function is not supported.
**/
typedef
EFI_STATUS
(EFIAPI *EDKII_PLATFORM_VTD_POLICY_GET_EXCEPTION_DEVICE_LIST) (
IN EDKII_PLATFORM_VTD_POLICY_PROTOCOL *This,
OUT UINTN *DeviceInfoCount,
OUT VOID **DeviceInfo
);
struct _EDKII_PLATFORM_VTD_POLICY_PROTOCOL {
UINT64 Revision;
EDKII_PLATFORM_VTD_POLICY_GET_DEVICE_ID GetDeviceId;
EDKII_PLATFORM_VTD_POLICY_GET_EXCEPTION_DEVICE_LIST GetExceptionDeviceList;
};
extern EFI_GUID gEdkiiPlatformVTdPolicyProtocolGuid;
#endif
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