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IntelSiliconPkg/VtdPmrPei: Add premem support.

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Remove memory discovered dependency to support both premem
VTD_INFO_PPI and postmem VTD_INFO_PPI.

If VTD_INFO_PPI is installed before memory is ready, this
driver protects all memory region.
If VTD_INFO_PPI is installed or reinstalled after memory
is ready, this driver allocates DMA buffer and protect rest.

Cc: Star Zeng <star.zeng@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Jiewen Yao <jiewen.yao@intel.com>
This commit is contained in:
Jiewen Yao
2017-09-23 16:27:50 +08:00
parent e5d847476a
commit a1e7cd0b02
6 changed files with 1383 additions and 621 deletions
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93
IntelSiliconPkg/Feature/VTd/IntelVTdPmrPei/IntelVTdPmrPei.h
View File

@@ -16,6 +16,8 @@
#define __DMA_ACCESS_LIB_H__
typedef struct {
EFI_ACPI_DMAR_HEADER *AcpiDmarTable;
UINT64 EngineMask;
UINT8 HostAddressWidth;
UINTN VTdEngineCount;
UINT64 VTdEngineAddress[1];
@@ -24,6 +26,7 @@ typedef struct {
/**
Set DMA protected region.
@param VTdInfo The VTd engine context information.
@param EngineMask The mask of the VTd engine to be accessed.
@param LowMemoryBase The protected low memory region base.
@param LowMemoryLength The protected low memory region length.
@@ -35,6 +38,7 @@ typedef struct {
**/
EFI_STATUS
SetDmaProtectedRange (
IN VTD_INFO *VTdInfo,
IN UINT64 EngineMask,
IN UINT32 LowMemoryBase,
IN UINT32 LowMemoryLength,
@@ -45,38 +49,127 @@ SetDmaProtectedRange (
/**
Diable DMA protection.
@param VTdInfo The VTd engine context information.
@param EngineMask The mask of the VTd engine to be accessed.
@retval DMA protection is disabled.
**/
EFI_STATUS
DisableDmaProtection (
IN VTD_INFO *VTdInfo,
IN UINT64 EngineMask
);
/**
Return if the DMA protection is enabled.
@param VTdInfo The VTd engine context information.
@param EngineMask The mask of the VTd engine to be accessed.
@retval TRUE DMA protection is enabled in at least one VTd engine.
@retval FALSE DMA protection is disabled in all VTd engines.
**/
UINT64
GetDmaProtectionEnabledEngineMask (
IN VTD_INFO *VTdInfo,
IN UINT64 EngineMask
);
/**
Get protected low memory alignment.
@param VTdInfo The VTd engine context information.
@param EngineMask The mask of the VTd engine to be accessed.
@return protected low memory alignment.
**/
UINT32
GetLowMemoryAlignment (
IN VTD_INFO *VTdInfo,
IN UINT64 EngineMask
);
/**
Get protected high memory alignment.
@param VTdInfo The VTd engine context information.
@param EngineMask The mask of the VTd engine to be accessed.
@return protected high memory alignment.
**/
UINT64
GetHighMemoryAlignment (
IN VTD_INFO *VTdInfo,
IN UINT64 EngineMask
);
/**
Enable VTd translation table protection.
@param VTdInfo The VTd engine context information.
@param EngineMask The mask of the VTd engine to be accessed.
**/
VOID
EnableVTdTranslationProtection (
IN VTD_INFO *VTdInfo,
IN UINT64 EngineMask
);
/**
Disable VTd translation table protection.
@param VTdInfo The VTd engine context information.
@param EngineMask The mask of the VTd engine to be accessed.
**/
VOID
DisableVTdTranslationProtection (
IN VTD_INFO *VTdInfo,
IN UINT64 EngineMask
);
/**
Parse DMAR DRHD table.
@param[in] AcpiDmarTable DMAR ACPI table
@return EFI_SUCCESS The DMAR DRHD table is parsed.
**/
EFI_STATUS
ParseDmarAcpiTableDrhd (
IN EFI_ACPI_DMAR_HEADER *AcpiDmarTable
);
/**
Parse DMAR DRHD table.
@param VTdInfo The VTd engine context information.
**/
VOID
ParseDmarAcpiTableRmrr (
IN VTD_INFO *VTdInfo
);
/**
Dump DMAR ACPI table.
@param[in] Dmar DMAR ACPI table
**/
VOID
DumpAcpiDMAR (
IN EFI_ACPI_DMAR_HEADER *Dmar
);
/**
Get the highest memory.
@return the highest memory.
**/
UINT64
GetTopMemory (
VOID
);
extern EFI_GUID mVTdInfoGuid;
#endif