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/** @file
Copyright (c) 2017, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include "DmaProtection.h"
/**
Create extended context entry.
@param[in] VtdIndex The index of the VTd engine.
@retval EFI_SUCCESS The extended context entry is created.
@retval EFI_OUT_OF_RESOURCE No enough resource to create extended context entry.
**/
EFI_STATUS
CreateExtContextEntry (
IN UINTN VtdIndex
)
{
UINTN Index;
VOID *Buffer;
UINTN RootPages;
UINTN ContextPages;
VTD_EXT_ROOT_ENTRY *ExtRootEntry;
VTD_EXT_CONTEXT_ENTRY *ExtContextEntryTable;
VTD_EXT_CONTEXT_ENTRY *ExtContextEntry;
VTD_SOURCE_ID *PciSourceId;
VTD_SOURCE_ID SourceId;
UINTN MaxBusNumber;
UINTN EntryTablePages;
MaxBusNumber = 0;
for (Index = 0; Index < mVtdUnitInformation[VtdIndex].PciDeviceInfo.PciDeviceDataNumber; Index++) {
PciSourceId = &mVtdUnitInformation[VtdIndex].PciDeviceInfo.PciDeviceData[Index].PciSourceId;
if (PciSourceId->Bits.Bus > MaxBusNumber) {
MaxBusNumber = PciSourceId->Bits.Bus;
}
}
DEBUG ((DEBUG_INFO," MaxBusNumber - 0x%x\n", MaxBusNumber));
RootPages = EFI_SIZE_TO_PAGES (sizeof (VTD_EXT_ROOT_ENTRY) * VTD_ROOT_ENTRY_NUMBER);
ContextPages = EFI_SIZE_TO_PAGES (sizeof (VTD_EXT_CONTEXT_ENTRY) * VTD_CONTEXT_ENTRY_NUMBER);
EntryTablePages = RootPages + ContextPages * (MaxBusNumber + 1);
Buffer = AllocateZeroPages (EntryTablePages);
if (Buffer == NULL) {
DEBUG ((DEBUG_INFO,"Could not Alloc Root Entry Table.. \n"));
return EFI_OUT_OF_RESOURCES;
}
mVtdUnitInformation[VtdIndex].ExtRootEntryTable = (VTD_EXT_ROOT_ENTRY *)Buffer;
Buffer = (UINT8 *)Buffer + EFI_PAGES_TO_SIZE (RootPages);
for (Index = 0; Index < mVtdUnitInformation[VtdIndex].PciDeviceInfo.PciDeviceDataNumber; Index++) {
PciSourceId = &mVtdUnitInformation[VtdIndex].PciDeviceInfo.PciDeviceData[Index].PciSourceId;
SourceId.Bits.Bus = PciSourceId->Bits.Bus;
SourceId.Bits.Device = PciSourceId->Bits.Device;
SourceId.Bits.Function = PciSourceId->Bits.Function;
ExtRootEntry = &mVtdUnitInformation[VtdIndex].ExtRootEntryTable[SourceId.Index.RootIndex];
if (ExtRootEntry->Bits.LowerPresent == 0) {
ExtRootEntry->Bits.LowerContextTablePointerLo = (UINT32) RShiftU64 ((UINT64)(UINTN)Buffer, 12);
ExtRootEntry->Bits.LowerContextTablePointerHi = (UINT32) RShiftU64 ((UINT64)(UINTN)Buffer, 32);
ExtRootEntry->Bits.LowerPresent = 1;
ExtRootEntry->Bits.UpperContextTablePointerLo = (UINT32) RShiftU64 ((UINT64)(UINTN)Buffer, 12) + 1;
ExtRootEntry->Bits.UpperContextTablePointerHi = (UINT32) RShiftU64 (RShiftU64 ((UINT64)(UINTN)Buffer, 12) + 1, 20);
ExtRootEntry->Bits.UpperPresent = 1;
Buffer = (UINT8 *)Buffer + EFI_PAGES_TO_SIZE (ContextPages);
}
ExtContextEntryTable = (VTD_EXT_CONTEXT_ENTRY *)(UINTN)VTD_64BITS_ADDRESS(ExtRootEntry->Bits.LowerContextTablePointerLo, ExtRootEntry->Bits.LowerContextTablePointerHi) ;
ExtContextEntry = &ExtContextEntryTable[SourceId.Index.ContextIndex];
ExtContextEntry->Bits.TranslationType = 0;
ExtContextEntry->Bits.FaultProcessingDisable = 0;
ExtContextEntry->Bits.Present = 0;
DEBUG ((DEBUG_INFO,"DOMAIN: S%04x, B%02x D%02x F%02x\n", mVtdUnitInformation[VtdIndex].Segment, SourceId.Bits.Bus, SourceId.Bits.Device, SourceId.Bits.Function));
mVtdUnitInformation[VtdIndex].Is5LevelPaging = FALSE;
if ((mVtdUnitInformation[VtdIndex].CapReg.Bits.SAGAW & BIT3) != 0) {
mVtdUnitInformation[VtdIndex].Is5LevelPaging = TRUE;
if ((mAcpiDmarTable->HostAddressWidth <= 48) &&
((mVtdUnitInformation[VtdIndex].CapReg.Bits.SAGAW & BIT2) != 0)) {
mVtdUnitInformation[VtdIndex].Is5LevelPaging = FALSE;
}
} else if ((mVtdUnitInformation[VtdIndex].CapReg.Bits.SAGAW & BIT2) == 0) {
DEBUG((DEBUG_ERROR, "!!!! Page-table type is not supported on VTD %d !!!!\n", VtdIndex));
return EFI_UNSUPPORTED;
}
if (mVtdUnitInformation[VtdIndex].Is5LevelPaging) {
ExtContextEntry->Bits.AddressWidth = 0x3;
DEBUG((DEBUG_INFO, "Using 5-level page-table on VTD %d\n", VtdIndex));
} else {
ExtContextEntry->Bits.AddressWidth = 0x2;
DEBUG((DEBUG_INFO, "Using 4-level page-table on VTD %d\n", VtdIndex));
}
}
FlushPageTableMemory (VtdIndex, (UINTN)mVtdUnitInformation[VtdIndex].ExtRootEntryTable, EFI_PAGES_TO_SIZE(EntryTablePages));
return EFI_SUCCESS;
}
/**
Dump DMAR extended context entry table.
@param[in] ExtRootEntry DMAR extended root entry.
@param[in] Is5LevelPaging If it is the 5 level paging.
**/
VOID
DumpDmarExtContextEntryTable (
IN VTD_EXT_ROOT_ENTRY *ExtRootEntry,
IN BOOLEAN Is5LevelPaging
)
{
UINTN Index;
UINTN Index2;
VTD_EXT_CONTEXT_ENTRY *ExtContextEntry;
DEBUG ((DEBUG_INFO,"=========================\n"));
DEBUG ((DEBUG_INFO,"DMAR ExtContext Entry Table:\n"));
DEBUG ((DEBUG_INFO,"ExtRootEntry Address - 0x%x\n", ExtRootEntry));
for (Index = 0; Index < VTD_ROOT_ENTRY_NUMBER; Index++) {
if ((ExtRootEntry[Index].Uint128.Uint64Lo != 0) || (ExtRootEntry[Index].Uint128.Uint64Hi != 0)) {
DEBUG ((DEBUG_INFO," ExtRootEntry(0x%02x) B%02x - 0x%016lx %016lx\n",
Index, Index, ExtRootEntry[Index].Uint128.Uint64Hi, ExtRootEntry[Index].Uint128.Uint64Lo));
}
if (ExtRootEntry[Index].Bits.LowerPresent == 0) {
continue;
}
ExtContextEntry = (VTD_EXT_CONTEXT_ENTRY *)(UINTN)VTD_64BITS_ADDRESS(ExtRootEntry[Index].Bits.LowerContextTablePointerLo, ExtRootEntry[Index].Bits.LowerContextTablePointerHi);
for (Index2 = 0; Index2 < VTD_CONTEXT_ENTRY_NUMBER/2; Index2++) {
if ((ExtContextEntry[Index2].Uint256.Uint64_1 != 0) || (ExtContextEntry[Index2].Uint256.Uint64_2 != 0) ||
(ExtContextEntry[Index2].Uint256.Uint64_3 != 0) || (ExtContextEntry[Index2].Uint256.Uint64_4 != 0)) {
DEBUG ((DEBUG_INFO," ExtContextEntryLower(0x%02x) D%02xF%02x - 0x%016lx %016lx %016lx %016lx\n",
Index2, Index2 >> 3, Index2 & 0x7, ExtContextEntry[Index2].Uint256.Uint64_4, ExtContextEntry[Index2].Uint256.Uint64_3, ExtContextEntry[Index2].Uint256.Uint64_2, ExtContextEntry[Index2].Uint256.Uint64_1));
}
if (ExtContextEntry[Index2].Bits.Present == 0) {
continue;
}
DumpSecondLevelPagingEntry ((VOID *)(UINTN)VTD_64BITS_ADDRESS(ExtContextEntry[Index2].Bits.SecondLevelPageTranslationPointerLo, ExtContextEntry[Index2].Bits.SecondLevelPageTranslationPointerHi), Is5LevelPaging);
}
if (ExtRootEntry[Index].Bits.UpperPresent == 0) {
continue;
}
ExtContextEntry = (VTD_EXT_CONTEXT_ENTRY *)(UINTN)VTD_64BITS_ADDRESS(ExtRootEntry[Index].Bits.UpperContextTablePointerLo, ExtRootEntry[Index].Bits.UpperContextTablePointerHi);
for (Index2 = 0; Index2 < VTD_CONTEXT_ENTRY_NUMBER/2; Index2++) {
if ((ExtContextEntry[Index2].Uint256.Uint64_1 != 0) || (ExtContextEntry[Index2].Uint256.Uint64_2 != 0) ||
(ExtContextEntry[Index2].Uint256.Uint64_3 != 0) || (ExtContextEntry[Index2].Uint256.Uint64_4 != 0)) {
DEBUG ((DEBUG_INFO," ExtContextEntryUpper(0x%02x) D%02xF%02x - 0x%016lx %016lx %016lx %016lx\n",
Index2, (Index2 + 128) >> 3, (Index2 + 128) & 0x7, ExtContextEntry[Index2].Uint256.Uint64_4, ExtContextEntry[Index2].Uint256.Uint64_3, ExtContextEntry[Index2].Uint256.Uint64_2, ExtContextEntry[Index2].Uint256.Uint64_1));
}
if (ExtContextEntry[Index2].Bits.Present == 0) {
continue;
}
}
}
DEBUG ((DEBUG_INFO,"=========================\n"));
}
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