mirror of https://github.com/acidanthera/audk.git
502 lines
14 KiB
C
502 lines
14 KiB
C
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/** @file
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Copyright (c) 2017, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php.
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#ifndef _DMAR_PROTECTION_H_
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#define _DMAR_PROTECTION_H_
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#include <Uefi.h>
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#include <PiDxe.h>
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#include <Library/BaseLib.h>
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#include <Library/BaseMemoryLib.h>
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#include <Library/MemoryAllocationLib.h>
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#include <Library/UefiBootServicesTableLib.h>
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#include <Library/IoLib.h>
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#include <Library/PciSegmentLib.h>
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#include <Library/DebugLib.h>
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#include <Library/UefiLib.h>
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#include <Guid/EventGroup.h>
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#include <Guid/Acpi.h>
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#include <Protocol/DxeSmmReadyToLock.h>
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#include <Protocol/PciRootBridgeIo.h>
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#include <Protocol/PciIo.h>
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#include <Protocol/PciEnumerationComplete.h>
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#include <Protocol/AcpiSystemDescriptionTable.h>
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#include <Protocol/PlatformVtdPolicy.h>
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#include <Protocol/IoMmu.h>
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#include <IndustryStandard/Pci.h>
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#include <IndustryStandard/DmaRemappingReportingTable.h>
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#include <IndustryStandard/Vtd.h>
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#define ALIGN_VALUE_UP(Value, Alignment) (((Value) + (Alignment) - 1) & (~((Alignment) - 1)))
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#define ALIGN_VALUE_LOW(Value, Alignment) ((Value) & (~((Alignment) - 1)))
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//
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// This is the initial max PCI descriptor.
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// The number may be enlarged later.
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//
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#define MAX_PCI_DESCRIPTORS 0x100
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typedef struct {
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BOOLEAN IncludeAllFlag;
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UINTN PciDescriptorNumber;
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UINTN PciDescriptorMaxNumber;
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BOOLEAN *IsRealPciDevice;
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VTD_SOURCE_ID *PciDescriptors;
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} PCI_DEVICE_INFORMATION;
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typedef struct {
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UINTN VtdUnitBaseAddress;
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UINT16 Segment;
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VTD_CAP_REG CapReg;
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VTD_ECAP_REG ECapReg;
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VTD_ROOT_ENTRY *RootEntryTable;
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VTD_EXT_ROOT_ENTRY *ExtRootEntryTable;
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VTD_SECOND_LEVEL_PAGING_ENTRY *FixedSecondLevelPagingEntry;
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BOOLEAN HasDirtyPages;
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PCI_DEVICE_INFORMATION PciDeviceInfo;
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} VTD_UNIT_INFORMATION;
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extern EFI_ACPI_DMAR_HEADER *mAcpiDmarTable;
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extern UINT64 mVtdHostAddressWidthMask;
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extern UINTN mVtdUnitNumber;
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extern VTD_UNIT_INFORMATION *mVtdUnitInformation;
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extern UINT64 mBelow4GMemoryLimit;
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extern UINT64 mAbove4GMemoryLimit;
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extern EDKII_PLATFORM_VTD_POLICY_PROTOCOL *mPlatformVTdPolicy;
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/**
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Prepare VTD configuration.
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**/
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VOID
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PrepareVtdConfig (
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VOID
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);
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/**
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Setup VTd translation table.
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@retval EFI_SUCCESS Setup translation table successfully.
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@retval EFI_OUT_OF_RESOURCE Setup translation table fail.
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**/
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EFI_STATUS
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SetupTranslationTable (
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VOID
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);
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/**
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Enable DMAR translation.
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@retval EFI_SUCCESS DMAR translation is enabled.
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@retval EFI_DEVICE_ERROR DMAR translation is not enabled.
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**/
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EFI_STATUS
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EnableDmar (
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VOID
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);
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/**
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Disable DMAR translation.
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@retval EFI_SUCCESS DMAR translation is disabled.
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@retval EFI_DEVICE_ERROR DMAR translation is not disabled.
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**/
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EFI_STATUS
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DisableDmar (
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VOID
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);
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/**
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Invalid VTd IOTLB page.
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@param[in] VtdIndex The index of VTd engine.
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@param[in] Address The address of IOTLB page.
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@param[in] AddressMode The address mode of IOTLB page.
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@param[in] DomainIdentifier The domain ID of the source.
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@retval EFI_SUCCESS VTd IOTLB page is invalidated.
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@retval EFI_DEVICE_ERROR VTd IOTLB page is not invalidated.
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**/
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EFI_STATUS
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InvalidateVtdIOTLBPage (
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IN UINTN VtdIndex,
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IN UINT64 Address,
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IN UINT8 AddressMode,
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IN UINT16 DomainIdentifier
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);
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/**
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Invalid VTd IOTLB domain.
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@param[in] VtdIndex The index of VTd engine.
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@param[in] DomainIdentifier The domain ID of the source.
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@retval EFI_SUCCESS VTd IOTLB domain is invalidated.
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@retval EFI_DEVICE_ERROR VTd IOTLB domain is not invalidated.
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**/
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EFI_STATUS
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InvalidateVtdIOTLBDomain (
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IN UINTN VtdIndex,
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IN UINT16 DomainIdentifier
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);
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/**
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Invalid VTd global IOTLB.
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@param[in] VtdIndex The index of VTd engine.
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@retval EFI_SUCCESS VTd global IOTLB is invalidated.
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@retval EFI_DEVICE_ERROR VTd global IOTLB is not invalidated.
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**/
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EFI_STATUS
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InvalidateVtdIOTLBGlobal (
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IN UINTN VtdIndex
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);
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/**
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Dump VTd registers.
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@param[in] VtdIndex The index of VTd engine.
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**/
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VOID
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DumpVtdRegs (
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IN UINTN VtdIndex
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);
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/**
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Dump VTd registers for all VTd engine.
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**/
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VOID
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DumpVtdRegsAll (
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VOID
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);
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/**
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Dump VTd capability registers.
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@param[in] CapReg The capability register.
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**/
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VOID
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DumpVtdCapRegs (
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IN VTD_CAP_REG *CapReg
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);
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/**
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Dump VTd extended capability registers.
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@param[in] ECapReg The extended capability register.
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**/
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VOID
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DumpVtdECapRegs (
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IN VTD_ECAP_REG *ECapReg
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);
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/**
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Register PCI device to VTd engine as PCI descriptor.
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@param[in] VtdIndex The index of VTd engine.
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@param[in] Segment The segment of the source.
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@param[in] SourceId The SourceId of the source.
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@param[in] IsRealPciDevice TRUE: It is a real PCI device.
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FALSE: It is not a real PCI device.
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@param[in] CheckExist TRUE: ERROR will be returned if the PCI device is already registered.
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FALSE: SUCCESS will be returned if the PCI device is registered.
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@retval EFI_SUCCESS The PCI device is registered.
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@retval EFI_OUT_OF_RESOURCES No enough resource to register a new PCI device.
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@retval EFI_ALREADY_STARTED The device is already registered.
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**/
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EFI_STATUS
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RegisterPciDevice (
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IN UINTN VtdIndex,
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IN UINT16 Segment,
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IN VTD_SOURCE_ID SourceId,
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IN BOOLEAN IsRealPciDevice,
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IN BOOLEAN CheckExist
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);
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/**
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Scan PCI bus and register PCI devices under the bus.
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@param[in] VtdIndex The index of VTd engine.
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@param[in] Segment The segment of the source.
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@param[in] Bus The bus of the source.
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@retval EFI_SUCCESS The PCI devices under the bus are registered.
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@retval EFI_OUT_OF_RESOURCES No enough resource to register a new PCI device.
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**/
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EFI_STATUS
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ScanPciBus (
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IN UINTN VtdIndex,
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IN UINT16 Segment,
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IN UINT8 Bus
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);
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/**
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Dump the PCI device information managed by this VTd engine.
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@param[in] VtdIndex The index of VTd engine.
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**/
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VOID
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DumpPciDeviceInfo (
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IN UINTN VtdIndex
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);
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/**
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Find the VTd index by the Segment and SourceId.
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@param[in] Segment The segment of the source.
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@param[in] SourceId The SourceId of the source.
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@param[out] ExtContextEntry The ExtContextEntry of the source.
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@param[out] ContextEntry The ContextEntry of the source.
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@return The index of the PCI descriptor.
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@retval (UINTN)-1 The PCI descriptor is not found.
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**/
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UINTN
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FindVtdIndexByPciDevice (
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IN UINT16 Segment,
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IN VTD_SOURCE_ID SourceId,
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OUT VTD_EXT_CONTEXT_ENTRY **ExtContextEntry,
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OUT VTD_CONTEXT_ENTRY **ContextEntry
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);
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/**
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Get the DMAR ACPI table.
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@retval EFI_SUCCESS The DMAR ACPI table is got.
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@retval EFI_NOT_FOUND The DMAR ACPI table is not found.
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**/
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EFI_STATUS
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GetDmarAcpiTable (
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VOID
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);
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/**
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Parse DMAR DRHD table.
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@return EFI_SUCCESS The DMAR DRHD table is parsed.
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**/
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EFI_STATUS
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ParseDmarAcpiTableDrhd (
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VOID
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);
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/**
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Parse DMAR RMRR table.
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@return EFI_SUCCESS The DMAR RMRR table is parsed.
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**/
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EFI_STATUS
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ParseDmarAcpiTableRmrr (
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VOID
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);
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/**
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Dump DMAR context entry table.
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@param[in] RootEntry DMAR root entry.
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**/
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VOID
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DumpDmarContextEntryTable (
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IN VTD_ROOT_ENTRY *RootEntry
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);
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/**
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Dump DMAR extended context entry table.
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@param[in] ExtRootEntry DMAR extended root entry.
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**/
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VOID
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DumpDmarExtContextEntryTable (
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IN VTD_EXT_ROOT_ENTRY *ExtRootEntry
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);
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/**
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Dump DMAR second level paging entry.
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@param[in] SecondLevelPagingEntry The second level paging entry.
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**/
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VOID
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DumpSecondLevelPagingEntry (
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IN VOID *SecondLevelPagingEntry
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);
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/**
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Set VTd attribute for a system memory.
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@param[in] VtdIndex The index used to identify a VTd engine.
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@param[in] SecondLevelPagingEntry The second level paging entry in VTd table for the device.
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@param[in] BaseAddress The base of device memory address to be used as the DMA memory.
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@param[in] Length The length of device memory address to be used as the DMA memory.
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@param[in] IoMmuAccess The IOMMU access.
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@retval EFI_SUCCESS The IoMmuAccess is set for the memory range specified by BaseAddress and Length.
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@retval EFI_INVALID_PARAMETER BaseAddress is not IoMmu Page size aligned.
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@retval EFI_INVALID_PARAMETER Length is not IoMmu Page size aligned.
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@retval EFI_INVALID_PARAMETER Length is 0.
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@retval EFI_INVALID_PARAMETER IoMmuAccess specified an illegal combination of access.
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@retval EFI_UNSUPPORTED The bit mask of IoMmuAccess is not supported by the IOMMU.
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@retval EFI_UNSUPPORTED The IOMMU does not support the memory range specified by BaseAddress and Length.
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@retval EFI_OUT_OF_RESOURCES There are not enough resources available to modify the IOMMU access.
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@retval EFI_DEVICE_ERROR The IOMMU device reported an error while attempting the operation.
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**/
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EFI_STATUS
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SetPageAttribute (
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IN UINTN VtdIndex,
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IN VTD_SECOND_LEVEL_PAGING_ENTRY *SecondLevelPagingEntry,
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IN UINT64 BaseAddress,
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IN UINT64 Length,
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IN UINT64 IoMmuAccess
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);
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/**
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Set VTd attribute for a system memory.
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@param[in] Segment The Segment used to identify a VTd engine.
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@param[in] SourceId The SourceId used to identify a VTd engine and table entry.
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@param[in] BaseAddress The base of device memory address to be used as the DMA memory.
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@param[in] Length The length of device memory address to be used as the DMA memory.
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@param[in] IoMmuAccess The IOMMU access.
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@retval EFI_SUCCESS The IoMmuAccess is set for the memory range specified by BaseAddress and Length.
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@retval EFI_INVALID_PARAMETER BaseAddress is not IoMmu Page size aligned.
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@retval EFI_INVALID_PARAMETER Length is not IoMmu Page size aligned.
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@retval EFI_INVALID_PARAMETER Length is 0.
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@retval EFI_INVALID_PARAMETER IoMmuAccess specified an illegal combination of access.
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@retval EFI_UNSUPPORTED The bit mask of IoMmuAccess is not supported by the IOMMU.
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@retval EFI_UNSUPPORTED The IOMMU does not support the memory range specified by BaseAddress and Length.
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@retval EFI_OUT_OF_RESOURCES There are not enough resources available to modify the IOMMU access.
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@retval EFI_DEVICE_ERROR The IOMMU device reported an error while attempting the operation.
|
||
|
|
**/
|
||
|
|
EFI_STATUS
|
||
|
|
SetAccessAttribute (
|
||
|
|
IN UINT16 Segment,
|
||
|
|
IN VTD_SOURCE_ID SourceId,
|
||
|
|
IN UINT64 BaseAddress,
|
||
|
|
IN UINT64 Length,
|
||
|
|
IN UINT64 IoMmuAccess
|
||
|
|
);
|
||
|
|
|
||
|
|
/**
|
||
|
|
Return the index of PCI descriptor.
|
||
|
|
|
||
|
|
@param[in] VtdIndex The index used to identify a VTd engine.
|
||
|
|
@param[in] Segment The Segment used to identify a VTd engine.
|
||
|
|
@param[in] SourceId The SourceId used to identify a VTd engine and table entry.
|
||
|
|
|
||
|
|
@return The index of the PCI descriptor.
|
||
|
|
@retval (UINTN)-1 The PCI descriptor is not found.
|
||
|
|
**/
|
||
|
|
UINTN
|
||
|
|
GetPciDescriptor (
|
||
|
|
IN UINTN VtdIndex,
|
||
|
|
IN UINT16 Segment,
|
||
|
|
IN VTD_SOURCE_ID SourceId
|
||
|
|
);
|
||
|
|
|
||
|
|
/**
|
||
|
|
Dump VTd registers if there is error.
|
||
|
|
**/
|
||
|
|
VOID
|
||
|
|
DumpVtdIfError (
|
||
|
|
VOID
|
||
|
|
);
|
||
|
|
|
||
|
|
/**
|
||
|
|
Initialize platform VTd policy.
|
||
|
|
**/
|
||
|
|
VOID
|
||
|
|
InitializePlatformVTdPolicy (
|
||
|
|
VOID
|
||
|
|
);
|
||
|
|
|
||
|
|
/**
|
||
|
|
Always enable the VTd page attribute for the device.
|
||
|
|
|
||
|
|
@param[in] Segment The Segment used to identify a VTd engine.
|
||
|
|
@param[in] SourceId The SourceId used to identify a VTd engine and table entry.
|
||
|
|
|
||
|
|
@retval EFI_SUCCESS The VTd entry is updated to always enable all DMA access for the specific device.
|
||
|
|
**/
|
||
|
|
EFI_STATUS
|
||
|
|
AlwaysEnablePageAttribute (
|
||
|
|
IN UINT16 Segment,
|
||
|
|
IN VTD_SOURCE_ID SourceId
|
||
|
|
);
|
||
|
|
|
||
|
|
/**
|
||
|
|
Convert the DeviceHandle to SourceId and Segment.
|
||
|
|
|
||
|
|
@param[in] DeviceHandle The device who initiates the DMA access request.
|
||
|
|
@param[out] Segment The Segment used to identify a VTd engine.
|
||
|
|
@param[out] SourceId The SourceId used to identify a VTd engine and table entry.
|
||
|
|
|
||
|
|
@retval EFI_SUCCESS The Segment and SourceId are returned.
|
||
|
|
@retval EFI_INVALID_PARAMETER DeviceHandle is an invalid handle.
|
||
|
|
@retval EFI_UNSUPPORTED DeviceHandle is unknown by the IOMMU.
|
||
|
|
**/
|
||
|
|
EFI_STATUS
|
||
|
|
DeviceHandleToSourceId (
|
||
|
|
IN EFI_HANDLE DeviceHandle,
|
||
|
|
OUT UINT16 *Segment,
|
||
|
|
OUT VTD_SOURCE_ID *SourceId
|
||
|
|
);
|
||
|
|
|
||
|
|
/**
|
||
|
|
Get device information from mapping.
|
||
|
|
|
||
|
|
@param[in] Mapping The mapping.
|
||
|
|
@param[out] DeviceAddress The device address of the mapping.
|
||
|
|
@param[out] NumberOfPages The number of pages of the mapping.
|
||
|
|
|
||
|
|
@retval EFI_SUCCESS The device information is returned.
|
||
|
|
@retval EFI_INVALID_PARAMETER The mapping is invalid.
|
||
|
|
**/
|
||
|
|
EFI_STATUS
|
||
|
|
GetDeviceInfoFromMapping (
|
||
|
|
IN VOID *Mapping,
|
||
|
|
OUT EFI_PHYSICAL_ADDRESS *DeviceAddress,
|
||
|
|
OUT UINTN *NumberOfPages
|
||
|
|
);
|
||
|
|
|
||
|
|
/**
|
||
|
|
Initialize DMA protection.
|
||
|
|
**/
|
||
|
|
VOID
|
||
|
|
InitializeDmaProtection (
|
||
|
|
VOID
|
||
|
|
);
|
||
|
|
|
||
|
|
/**
|
||
|
|
Allocate zero pages.
|
||
|
|
|
||
|
|
@param[in] Pages the number of pages.
|
||
|
|
|
||
|
|
@return the page address.
|
||
|
|
@retval NULL No resource to allocate pages.
|
||
|
|
**/
|
||
|
|
VOID *
|
||
|
|
EFIAPI
|
||
|
|
AllocateZeroPages (
|
||
|
|
IN UINTN Pages
|
||
|
|
);
|
||
|
|
|
||
|
|
#endif
|