diff options
Diffstat (limited to 'IntelSiliconPkg/Feature/VTd/IntelVTdDxe/TranslationTable.c')
| -rw-r--r-- | IntelSiliconPkg/Feature/VTd/IntelVTdDxe/TranslationTable.c | 1026 |
1 files changed, 0 insertions, 1026 deletions
diff --git a/IntelSiliconPkg/Feature/VTd/IntelVTdDxe/TranslationTable.c b/IntelSiliconPkg/Feature/VTd/IntelVTdDxe/TranslationTable.c deleted file mode 100644 index fcff0925b8..0000000000 --- a/IntelSiliconPkg/Feature/VTd/IntelVTdDxe/TranslationTable.c +++ /dev/null @@ -1,1026 +0,0 @@ -/** @file
-
- Copyright (c) 2017 - 2018, 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
- );
-
-/**
- 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
- )
-{
- VOID *Addr;
-
- Addr = AllocatePages (Pages);
- if (Addr == NULL) {
- return NULL;
- }
- ZeroMem (Addr, EFI_PAGES_TO_SIZE(Pages));
- return Addr;
-}
-
-/**
- Set second level paging entry attribute based upon IoMmuAccess.
-
- @param[in] PtEntry The paging entry.
- @param[in] IoMmuAccess The IOMMU access.
-**/
-VOID
-SetSecondLevelPagingEntryAttribute (
- IN VTD_SECOND_LEVEL_PAGING_ENTRY *PtEntry,
- IN UINT64 IoMmuAccess
- )
-{
- PtEntry->Bits.Read = ((IoMmuAccess & EDKII_IOMMU_ACCESS_READ) != 0);
- PtEntry->Bits.Write = ((IoMmuAccess & EDKII_IOMMU_ACCESS_WRITE) != 0);
-}
-
-/**
- Create context entry.
-
- @param[in] VtdIndex The index of the VTd engine.
-
- @retval EFI_SUCCESS The context entry is created.
- @retval EFI_OUT_OF_RESOURCE No enough resource to create context entry.
-**/
-EFI_STATUS
-CreateContextEntry (
- IN UINTN VtdIndex
- )
-{
- UINTN Index;
- VOID *Buffer;
- UINTN RootPages;
- UINTN ContextPages;
- VTD_ROOT_ENTRY *RootEntry;
- VTD_CONTEXT_ENTRY *ContextEntryTable;
- VTD_CONTEXT_ENTRY *ContextEntry;
- 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_ROOT_ENTRY) * VTD_ROOT_ENTRY_NUMBER);
- ContextPages = EFI_SIZE_TO_PAGES (sizeof (VTD_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].RootEntryTable = (VTD_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;
-
- RootEntry = &mVtdUnitInformation[VtdIndex].RootEntryTable[SourceId.Index.RootIndex];
- if (RootEntry->Bits.Present == 0) {
- RootEntry->Bits.ContextTablePointerLo = (UINT32) RShiftU64 ((UINT64)(UINTN)Buffer, 12);
- RootEntry->Bits.ContextTablePointerHi = (UINT32) RShiftU64 ((UINT64)(UINTN)Buffer, 32);
- RootEntry->Bits.Present = 1;
- Buffer = (UINT8 *)Buffer + EFI_PAGES_TO_SIZE (ContextPages);
- }
-
- ContextEntryTable = (VTD_CONTEXT_ENTRY *)(UINTN)VTD_64BITS_ADDRESS(RootEntry->Bits.ContextTablePointerLo, RootEntry->Bits.ContextTablePointerHi) ;
- ContextEntry = &ContextEntryTable[SourceId.Index.ContextIndex];
- ContextEntry->Bits.TranslationType = 0;
- ContextEntry->Bits.FaultProcessingDisable = 0;
- ContextEntry->Bits.Present = 0;
-
- DEBUG ((DEBUG_INFO,"Source: S%04x B%02x D%02x F%02x\n", mVtdUnitInformation[VtdIndex].Segment, SourceId.Bits.Bus, SourceId.Bits.Device, SourceId.Bits.Function));
-
- switch (mVtdUnitInformation[VtdIndex].CapReg.Bits.SAGAW) {
- case BIT1:
- ContextEntry->Bits.AddressWidth = 0x1;
- break;
- case BIT2:
- ContextEntry->Bits.AddressWidth = 0x2;
- break;
- }
- }
-
- FlushPageTableMemory (VtdIndex, (UINTN)mVtdUnitInformation[VtdIndex].RootEntryTable, EFI_PAGES_TO_SIZE(EntryTablePages));
-
- return EFI_SUCCESS;
-}
-
-/**
- Create second level paging entry table.
-
- @param[in] VtdIndex The index of the VTd engine.
- @param[in] SecondLevelPagingEntry The second level paging entry.
- @param[in] MemoryBase The base of the memory.
- @param[in] MemoryLimit The limit of the memory.
- @param[in] IoMmuAccess The IOMMU access.
-
- @return The second level paging entry.
-**/
-VTD_SECOND_LEVEL_PAGING_ENTRY *
-CreateSecondLevelPagingEntryTable (
- IN UINTN VtdIndex,
- IN VTD_SECOND_LEVEL_PAGING_ENTRY *SecondLevelPagingEntry,
- IN UINT64 MemoryBase,
- IN UINT64 MemoryLimit,
- IN UINT64 IoMmuAccess
- )
-{
- UINTN Index4;
- UINTN Index3;
- UINTN Index2;
- UINTN Lvl4Start;
- UINTN Lvl4End;
- UINTN Lvl3Start;
- UINTN Lvl3End;
- VTD_SECOND_LEVEL_PAGING_ENTRY *Lvl4PtEntry;
- VTD_SECOND_LEVEL_PAGING_ENTRY *Lvl3PtEntry;
- VTD_SECOND_LEVEL_PAGING_ENTRY *Lvl2PtEntry;
- UINT64 BaseAddress;
- UINT64 EndAddress;
-
- if (MemoryLimit == 0) {
- return EFI_SUCCESS;
- }
-
- BaseAddress = ALIGN_VALUE_LOW(MemoryBase, SIZE_2MB);
- EndAddress = ALIGN_VALUE_UP(MemoryLimit, SIZE_2MB);
- DEBUG ((DEBUG_INFO,"CreateSecondLevelPagingEntryTable: BaseAddress - 0x%016lx, EndAddress - 0x%016lx\n", BaseAddress, EndAddress));
-
- if (SecondLevelPagingEntry == NULL) {
- SecondLevelPagingEntry = AllocateZeroPages (1);
- if (SecondLevelPagingEntry == NULL) {
- DEBUG ((DEBUG_ERROR,"Could not Alloc LVL4 PT. \n"));
- return NULL;
- }
- FlushPageTableMemory (VtdIndex, (UINTN)SecondLevelPagingEntry, EFI_PAGES_TO_SIZE(1));
- }
-
- //
- // If no access is needed, just create not present entry.
- //
- if (IoMmuAccess == 0) {
- return SecondLevelPagingEntry;
- }
-
- Lvl4Start = RShiftU64 (BaseAddress, 39) & 0x1FF;
- Lvl4End = RShiftU64 (EndAddress - 1, 39) & 0x1FF;
-
- DEBUG ((DEBUG_INFO," Lvl4Start - 0x%x, Lvl4End - 0x%x\n", Lvl4Start, Lvl4End));
-
- Lvl4PtEntry = (VTD_SECOND_LEVEL_PAGING_ENTRY *)SecondLevelPagingEntry;
- for (Index4 = Lvl4Start; Index4 <= Lvl4End; Index4++) {
- if (Lvl4PtEntry[Index4].Uint64 == 0) {
- Lvl4PtEntry[Index4].Uint64 = (UINT64)(UINTN)AllocateZeroPages (1);
- if (Lvl4PtEntry[Index4].Uint64 == 0) {
- DEBUG ((DEBUG_ERROR,"!!!!!! ALLOCATE LVL4 PAGE FAIL (0x%x)!!!!!!\n", Index4));
- ASSERT(FALSE);
- return NULL;
- }
- FlushPageTableMemory (VtdIndex, (UINTN)Lvl4PtEntry[Index4].Uint64, SIZE_4KB);
- SetSecondLevelPagingEntryAttribute (&Lvl4PtEntry[Index4], EDKII_IOMMU_ACCESS_READ | EDKII_IOMMU_ACCESS_WRITE);
- }
-
- Lvl3Start = RShiftU64 (BaseAddress, 30) & 0x1FF;
- if (ALIGN_VALUE_LOW(BaseAddress + SIZE_1GB, SIZE_1GB) <= EndAddress) {
- Lvl3End = SIZE_4KB/sizeof(VTD_SECOND_LEVEL_PAGING_ENTRY) - 1;
- } else {
- Lvl3End = RShiftU64 (EndAddress - 1, 30) & 0x1FF;
- }
- DEBUG ((DEBUG_INFO," Lvl4(0x%x): Lvl3Start - 0x%x, Lvl3End - 0x%x\n", Index4, Lvl3Start, Lvl3End));
-
- Lvl3PtEntry = (VTD_SECOND_LEVEL_PAGING_ENTRY *)(UINTN)VTD_64BITS_ADDRESS(Lvl4PtEntry[Index4].Bits.AddressLo, Lvl4PtEntry[Index4].Bits.AddressHi);
- for (Index3 = Lvl3Start; Index3 <= Lvl3End; Index3++) {
- if (Lvl3PtEntry[Index3].Uint64 == 0) {
- Lvl3PtEntry[Index3].Uint64 = (UINT64)(UINTN)AllocateZeroPages (1);
- if (Lvl3PtEntry[Index3].Uint64 == 0) {
- DEBUG ((DEBUG_ERROR,"!!!!!! ALLOCATE LVL3 PAGE FAIL (0x%x, 0x%x)!!!!!!\n", Index4, Index3));
- ASSERT(FALSE);
- return NULL;
- }
- FlushPageTableMemory (VtdIndex, (UINTN)Lvl3PtEntry[Index3].Uint64, SIZE_4KB);
- SetSecondLevelPagingEntryAttribute (&Lvl3PtEntry[Index3], EDKII_IOMMU_ACCESS_READ | EDKII_IOMMU_ACCESS_WRITE);
- }
-
- Lvl2PtEntry = (VTD_SECOND_LEVEL_PAGING_ENTRY *)(UINTN)VTD_64BITS_ADDRESS(Lvl3PtEntry[Index3].Bits.AddressLo, Lvl3PtEntry[Index3].Bits.AddressHi);
- for (Index2 = 0; Index2 < SIZE_4KB/sizeof(VTD_SECOND_LEVEL_PAGING_ENTRY); Index2++) {
- Lvl2PtEntry[Index2].Uint64 = BaseAddress;
- SetSecondLevelPagingEntryAttribute (&Lvl2PtEntry[Index2], IoMmuAccess);
- Lvl2PtEntry[Index2].Bits.PageSize = 1;
- BaseAddress += SIZE_2MB;
- if (BaseAddress >= MemoryLimit) {
- break;
- }
- }
- FlushPageTableMemory (VtdIndex, (UINTN)Lvl2PtEntry, SIZE_4KB);
- if (BaseAddress >= MemoryLimit) {
- break;
- }
- }
- FlushPageTableMemory (VtdIndex, (UINTN)&Lvl3PtEntry[Lvl3Start], (UINTN)&Lvl3PtEntry[Lvl3End + 1] - (UINTN)&Lvl3PtEntry[Lvl3Start]);
- if (BaseAddress >= MemoryLimit) {
- break;
- }
- }
- FlushPageTableMemory (VtdIndex, (UINTN)&Lvl4PtEntry[Lvl4Start], (UINTN)&Lvl4PtEntry[Lvl4End + 1] - (UINTN)&Lvl4PtEntry[Lvl4Start]);
-
- return SecondLevelPagingEntry;
-}
-
-/**
- Create second level paging entry.
-
- @param[in] VtdIndex The index of the VTd engine.
- @param[in] IoMmuAccess The IOMMU access.
-
- @return The second level paging entry.
-**/
-VTD_SECOND_LEVEL_PAGING_ENTRY *
-CreateSecondLevelPagingEntry (
- IN UINTN VtdIndex,
- IN UINT64 IoMmuAccess
- )
-{
- VTD_SECOND_LEVEL_PAGING_ENTRY *SecondLevelPagingEntry;
-
- SecondLevelPagingEntry = NULL;
- SecondLevelPagingEntry = CreateSecondLevelPagingEntryTable (VtdIndex, SecondLevelPagingEntry, 0, mBelow4GMemoryLimit, IoMmuAccess);
- if (SecondLevelPagingEntry == NULL) {
- return NULL;
- }
-
- if (mAbove4GMemoryLimit != 0) {
- ASSERT (mAbove4GMemoryLimit > BASE_4GB);
- SecondLevelPagingEntry = CreateSecondLevelPagingEntryTable (VtdIndex, SecondLevelPagingEntry, SIZE_4GB, mAbove4GMemoryLimit, IoMmuAccess);
- if (SecondLevelPagingEntry == NULL) {
- return NULL;
- }
- }
-
- return SecondLevelPagingEntry;
-}
-
-/**
- Setup VTd translation table.
-
- @retval EFI_SUCCESS Setup translation table successfully.
- @retval EFI_OUT_OF_RESOURCE Setup translation table fail.
-**/
-EFI_STATUS
-SetupTranslationTable (
- VOID
- )
-{
- EFI_STATUS Status;
- UINTN Index;
-
- for (Index = 0; Index < mVtdUnitNumber; Index++) {
- DEBUG((DEBUG_INFO, "CreateContextEntry - %d\n", Index));
- if (mVtdUnitInformation[Index].ECapReg.Bits.ECS) {
- Status = CreateExtContextEntry (Index);
- } else {
- Status = CreateContextEntry (Index);
- }
- if (EFI_ERROR (Status)) {
- return Status;
- }
- }
-
- return EFI_SUCCESS;
-}
-
-/**
- Dump DMAR context entry table.
-
- @param[in] RootEntry DMAR root entry.
-**/
-VOID
-DumpDmarContextEntryTable (
- IN VTD_ROOT_ENTRY *RootEntry
- )
-{
- UINTN Index;
- UINTN Index2;
- VTD_CONTEXT_ENTRY *ContextEntry;
-
- DEBUG ((DEBUG_INFO,"=========================\n"));
- DEBUG ((DEBUG_INFO,"DMAR Context Entry Table:\n"));
-
- DEBUG ((DEBUG_INFO,"RootEntry Address - 0x%x\n", RootEntry));
-
- for (Index = 0; Index < VTD_ROOT_ENTRY_NUMBER; Index++) {
- if ((RootEntry[Index].Uint128.Uint64Lo != 0) || (RootEntry[Index].Uint128.Uint64Hi != 0)) {
- DEBUG ((DEBUG_INFO," RootEntry(0x%02x) B%02x - 0x%016lx %016lx\n",
- Index, Index, RootEntry[Index].Uint128.Uint64Hi, RootEntry[Index].Uint128.Uint64Lo));
- }
- if (RootEntry[Index].Bits.Present == 0) {
- continue;
- }
- ContextEntry = (VTD_CONTEXT_ENTRY *)(UINTN)VTD_64BITS_ADDRESS(RootEntry[Index].Bits.ContextTablePointerLo, RootEntry[Index].Bits.ContextTablePointerHi);
- for (Index2 = 0; Index2 < VTD_CONTEXT_ENTRY_NUMBER; Index2++) {
- if ((ContextEntry[Index2].Uint128.Uint64Lo != 0) || (ContextEntry[Index2].Uint128.Uint64Hi != 0)) {
- DEBUG ((DEBUG_INFO," ContextEntry(0x%02x) D%02xF%02x - 0x%016lx %016lx\n",
- Index2, Index2 >> 3, Index2 & 0x7, ContextEntry[Index2].Uint128.Uint64Hi, ContextEntry[Index2].Uint128.Uint64Lo));
- }
- if (ContextEntry[Index2].Bits.Present == 0) {
- continue;
- }
- DumpSecondLevelPagingEntry ((VOID *)(UINTN)VTD_64BITS_ADDRESS(ContextEntry[Index2].Bits.SecondLevelPageTranslationPointerLo, ContextEntry[Index2].Bits.SecondLevelPageTranslationPointerHi));
- }
- }
- DEBUG ((DEBUG_INFO,"=========================\n"));
-}
-
-/**
- Dump DMAR second level paging entry.
-
- @param[in] SecondLevelPagingEntry The second level paging entry.
-**/
-VOID
-DumpSecondLevelPagingEntry (
- IN VOID *SecondLevelPagingEntry
- )
-{
- UINTN Index4;
- UINTN Index3;
- UINTN Index2;
- UINTN Index1;
- VTD_SECOND_LEVEL_PAGING_ENTRY *Lvl4PtEntry;
- VTD_SECOND_LEVEL_PAGING_ENTRY *Lvl3PtEntry;
- VTD_SECOND_LEVEL_PAGING_ENTRY *Lvl2PtEntry;
- VTD_SECOND_LEVEL_PAGING_ENTRY *Lvl1PtEntry;
-
- DEBUG ((DEBUG_VERBOSE,"================\n"));
- DEBUG ((DEBUG_VERBOSE,"DMAR Second Level Page Table:\n"));
-
- DEBUG ((DEBUG_VERBOSE,"SecondLevelPagingEntry Base - 0x%x\n", SecondLevelPagingEntry));
- Lvl4PtEntry = (VTD_SECOND_LEVEL_PAGING_ENTRY *)SecondLevelPagingEntry;
- for (Index4 = 0; Index4 < SIZE_4KB/sizeof(VTD_SECOND_LEVEL_PAGING_ENTRY); Index4++) {
- if (Lvl4PtEntry[Index4].Uint64 != 0) {
- DEBUG ((DEBUG_VERBOSE," Lvl4Pt Entry(0x%03x) - 0x%016lx\n", Index4, Lvl4PtEntry[Index4].Uint64));
- }
- if (Lvl4PtEntry[Index4].Uint64 == 0) {
- continue;
- }
- Lvl3PtEntry = (VTD_SECOND_LEVEL_PAGING_ENTRY *)(UINTN)VTD_64BITS_ADDRESS(Lvl4PtEntry[Index4].Bits.AddressLo, Lvl4PtEntry[Index4].Bits.AddressHi);
- for (Index3 = 0; Index3 < SIZE_4KB/sizeof(VTD_SECOND_LEVEL_PAGING_ENTRY); Index3++) {
- if (Lvl3PtEntry[Index3].Uint64 != 0) {
- DEBUG ((DEBUG_VERBOSE," Lvl3Pt Entry(0x%03x) - 0x%016lx\n", Index3, Lvl3PtEntry[Index3].Uint64));
- }
- if (Lvl3PtEntry[Index3].Uint64 == 0) {
- continue;
- }
-
- Lvl2PtEntry = (VTD_SECOND_LEVEL_PAGING_ENTRY *)(UINTN)VTD_64BITS_ADDRESS(Lvl3PtEntry[Index3].Bits.AddressLo, Lvl3PtEntry[Index3].Bits.AddressHi);
- for (Index2 = 0; Index2 < SIZE_4KB/sizeof(VTD_SECOND_LEVEL_PAGING_ENTRY); Index2++) {
- if (Lvl2PtEntry[Index2].Uint64 != 0) {
- DEBUG ((DEBUG_VERBOSE," Lvl2Pt Entry(0x%03x) - 0x%016lx\n", Index2, Lvl2PtEntry[Index2].Uint64));
- }
- if (Lvl2PtEntry[Index2].Uint64 == 0) {
- continue;
- }
- if (Lvl2PtEntry[Index2].Bits.PageSize == 0) {
- Lvl1PtEntry = (VTD_SECOND_LEVEL_PAGING_ENTRY *)(UINTN)VTD_64BITS_ADDRESS(Lvl2PtEntry[Index2].Bits.AddressLo, Lvl2PtEntry[Index2].Bits.AddressHi);
- for (Index1 = 0; Index1 < SIZE_4KB/sizeof(VTD_SECOND_LEVEL_PAGING_ENTRY); Index1++) {
- if (Lvl1PtEntry[Index1].Uint64 != 0) {
- DEBUG ((DEBUG_VERBOSE," Lvl1Pt Entry(0x%03x) - 0x%016lx\n", Index1, Lvl1PtEntry[Index1].Uint64));
- }
- }
- }
- }
- }
- }
- DEBUG ((DEBUG_VERBOSE,"================\n"));
-}
-
-/**
- Invalid page entry.
-
- @param VtdIndex The VTd engine index.
-**/
-VOID
-InvalidatePageEntry (
- IN UINTN VtdIndex
- )
-{
- if (mVtdUnitInformation[VtdIndex].HasDirtyContext || mVtdUnitInformation[VtdIndex].HasDirtyPages) {
- InvalidateVtdIOTLBGlobal (VtdIndex);
- }
- mVtdUnitInformation[VtdIndex].HasDirtyContext = FALSE;
- mVtdUnitInformation[VtdIndex].HasDirtyPages = FALSE;
-}
-
-#define VTD_PG_R BIT0
-#define VTD_PG_W BIT1
-#define VTD_PG_X BIT2
-#define VTD_PG_EMT (BIT3 | BIT4 | BIT5)
-#define VTD_PG_TM (BIT62)
-
-#define VTD_PG_PS BIT7
-
-#define PAGE_PROGATE_BITS (VTD_PG_TM | VTD_PG_EMT | VTD_PG_W | VTD_PG_R)
-
-#define PAGING_4K_MASK 0xFFF
-#define PAGING_2M_MASK 0x1FFFFF
-#define PAGING_1G_MASK 0x3FFFFFFF
-
-#define PAGING_VTD_INDEX_MASK 0x1FF
-
-#define PAGING_4K_ADDRESS_MASK_64 0x000FFFFFFFFFF000ull
-#define PAGING_2M_ADDRESS_MASK_64 0x000FFFFFFFE00000ull
-#define PAGING_1G_ADDRESS_MASK_64 0x000FFFFFC0000000ull
-
-typedef enum {
- PageNone,
- Page4K,
- Page2M,
- Page1G,
-} PAGE_ATTRIBUTE;
-
-typedef struct {
- PAGE_ATTRIBUTE Attribute;
- UINT64 Length;
- UINT64 AddressMask;
-} PAGE_ATTRIBUTE_TABLE;
-
-PAGE_ATTRIBUTE_TABLE mPageAttributeTable[] = {
- {Page4K, SIZE_4KB, PAGING_4K_ADDRESS_MASK_64},
- {Page2M, SIZE_2MB, PAGING_2M_ADDRESS_MASK_64},
- {Page1G, SIZE_1GB, PAGING_1G_ADDRESS_MASK_64},
-};
-
-/**
- Return length according to page attributes.
-
- @param[in] PageAttributes The page attribute of the page entry.
-
- @return The length of page entry.
-**/
-UINTN
-PageAttributeToLength (
- IN PAGE_ATTRIBUTE PageAttribute
- )
-{
- UINTN Index;
- for (Index = 0; Index < sizeof(mPageAttributeTable)/sizeof(mPageAttributeTable[0]); Index++) {
- if (PageAttribute == mPageAttributeTable[Index].Attribute) {
- return (UINTN)mPageAttributeTable[Index].Length;
- }
- }
- return 0;
-}
-
-/**
- Return page table entry to match the address.
-
- @param[in] VtdIndex The index used to identify a VTd engine.
- @param[in] SecondLevelPagingEntry The second level paging entry in VTd table for the device.
- @param[in] Address The address to be checked.
- @param[out] PageAttributes The page attribute of the page entry.
-
- @return The page entry.
-**/
-VOID *
-GetSecondLevelPageTableEntry (
- IN UINTN VtdIndex,
- IN VTD_SECOND_LEVEL_PAGING_ENTRY *SecondLevelPagingEntry,
- IN PHYSICAL_ADDRESS Address,
- OUT PAGE_ATTRIBUTE *PageAttribute
- )
-{
- UINTN Index1;
- UINTN Index2;
- UINTN Index3;
- UINTN Index4;
- UINT64 *L1PageTable;
- UINT64 *L2PageTable;
- UINT64 *L3PageTable;
- UINT64 *L4PageTable;
-
- Index4 = ((UINTN)RShiftU64 (Address, 39)) & PAGING_VTD_INDEX_MASK;
- Index3 = ((UINTN)Address >> 30) & PAGING_VTD_INDEX_MASK;
- Index2 = ((UINTN)Address >> 21) & PAGING_VTD_INDEX_MASK;
- Index1 = ((UINTN)Address >> 12) & PAGING_VTD_INDEX_MASK;
-
- L4PageTable = (UINT64 *)SecondLevelPagingEntry;
- if (L4PageTable[Index4] == 0) {
- L4PageTable[Index4] = (UINT64)(UINTN)AllocateZeroPages (1);
- if (L4PageTable[Index4] == 0) {
- DEBUG ((DEBUG_ERROR,"!!!!!! ALLOCATE LVL4 PAGE FAIL (0x%x)!!!!!!\n", Index4));
- ASSERT(FALSE);
- *PageAttribute = PageNone;
- return NULL;
- }
- FlushPageTableMemory (VtdIndex, (UINTN)L4PageTable[Index4], SIZE_4KB);
- SetSecondLevelPagingEntryAttribute ((VTD_SECOND_LEVEL_PAGING_ENTRY *)&L4PageTable[Index4], EDKII_IOMMU_ACCESS_READ | EDKII_IOMMU_ACCESS_WRITE);
- FlushPageTableMemory (VtdIndex, (UINTN)&L4PageTable[Index4], sizeof(L4PageTable[Index4]));
- }
-
- L3PageTable = (UINT64 *)(UINTN)(L4PageTable[Index4] & PAGING_4K_ADDRESS_MASK_64);
- if (L3PageTable[Index3] == 0) {
- L3PageTable[Index3] = (UINT64)(UINTN)AllocateZeroPages (1);
- if (L3PageTable[Index3] == 0) {
- DEBUG ((DEBUG_ERROR,"!!!!!! ALLOCATE LVL3 PAGE FAIL (0x%x, 0x%x)!!!!!!\n", Index4, Index3));
- ASSERT(FALSE);
- *PageAttribute = PageNone;
- return NULL;
- }
- FlushPageTableMemory (VtdIndex, (UINTN)L3PageTable[Index3], SIZE_4KB);
- SetSecondLevelPagingEntryAttribute ((VTD_SECOND_LEVEL_PAGING_ENTRY *)&L3PageTable[Index3], EDKII_IOMMU_ACCESS_READ | EDKII_IOMMU_ACCESS_WRITE);
- FlushPageTableMemory (VtdIndex, (UINTN)&L3PageTable[Index3], sizeof(L3PageTable[Index3]));
- }
- if ((L3PageTable[Index3] & VTD_PG_PS) != 0) {
- // 1G
- *PageAttribute = Page1G;
- return &L3PageTable[Index3];
- }
-
- L2PageTable = (UINT64 *)(UINTN)(L3PageTable[Index3] & PAGING_4K_ADDRESS_MASK_64);
- if (L2PageTable[Index2] == 0) {
- L2PageTable[Index2] = Address & PAGING_2M_ADDRESS_MASK_64;
- SetSecondLevelPagingEntryAttribute ((VTD_SECOND_LEVEL_PAGING_ENTRY *)&L2PageTable[Index2], 0);
- L2PageTable[Index2] |= VTD_PG_PS;
- FlushPageTableMemory (VtdIndex, (UINTN)&L2PageTable[Index2], sizeof(L2PageTable[Index2]));
- }
- if ((L2PageTable[Index2] & VTD_PG_PS) != 0) {
- // 2M
- *PageAttribute = Page2M;
- return &L2PageTable[Index2];
- }
-
- // 4k
- L1PageTable = (UINT64 *)(UINTN)(L2PageTable[Index2] & PAGING_4K_ADDRESS_MASK_64);
- if ((L1PageTable[Index1] == 0) && (Address != 0)) {
- *PageAttribute = PageNone;
- return NULL;
- }
- *PageAttribute = Page4K;
- return &L1PageTable[Index1];
-}
-
-/**
- Modify memory attributes of page entry.
-
- @param[in] VtdIndex The index used to identify a VTd engine.
- @param[in] PageEntry The page entry.
- @param[in] IoMmuAccess The IOMMU access.
- @param[out] IsModified TRUE means page table modified. FALSE means page table not modified.
-**/
-VOID
-ConvertSecondLevelPageEntryAttribute (
- IN UINTN VtdIndex,
- IN VTD_SECOND_LEVEL_PAGING_ENTRY *PageEntry,
- IN UINT64 IoMmuAccess,
- OUT BOOLEAN *IsModified
- )
-{
- UINT64 CurrentPageEntry;
- UINT64 NewPageEntry;
-
- CurrentPageEntry = PageEntry->Uint64;
- SetSecondLevelPagingEntryAttribute (PageEntry, IoMmuAccess);
- FlushPageTableMemory (VtdIndex, (UINTN)PageEntry, sizeof(*PageEntry));
- NewPageEntry = PageEntry->Uint64;
- if (CurrentPageEntry != NewPageEntry) {
- *IsModified = TRUE;
- DEBUG ((DEBUG_VERBOSE, "ConvertSecondLevelPageEntryAttribute 0x%lx", CurrentPageEntry));
- DEBUG ((DEBUG_VERBOSE, "->0x%lx\n", NewPageEntry));
- } else {
- *IsModified = FALSE;
- }
-}
-
-/**
- This function returns if there is need to split page entry.
-
- @param[in] BaseAddress The base address to be checked.
- @param[in] Length The length to be checked.
- @param[in] PageAttribute The page attribute of the page entry.
-
- @retval SplitAttributes on if there is need to split page entry.
-**/
-PAGE_ATTRIBUTE
-NeedSplitPage (
- IN PHYSICAL_ADDRESS BaseAddress,
- IN UINT64 Length,
- IN PAGE_ATTRIBUTE PageAttribute
- )
-{
- UINT64 PageEntryLength;
-
- PageEntryLength = PageAttributeToLength (PageAttribute);
-
- if (((BaseAddress & (PageEntryLength - 1)) == 0) && (Length >= PageEntryLength)) {
- return PageNone;
- }
-
- if (((BaseAddress & PAGING_2M_MASK) != 0) || (Length < SIZE_2MB)) {
- return Page4K;
- }
-
- return Page2M;
-}
-
-/**
- This function splits one page entry to small page entries.
-
- @param[in] VtdIndex The index used to identify a VTd engine.
- @param[in] PageEntry The page entry to be splitted.
- @param[in] PageAttribute The page attribute of the page entry.
- @param[in] SplitAttribute How to split the page entry.
-
- @retval RETURN_SUCCESS The page entry is splitted.
- @retval RETURN_UNSUPPORTED The page entry does not support to be splitted.
- @retval RETURN_OUT_OF_RESOURCES No resource to split page entry.
-**/
-RETURN_STATUS
-SplitSecondLevelPage (
- IN UINTN VtdIndex,
- IN VTD_SECOND_LEVEL_PAGING_ENTRY *PageEntry,
- IN PAGE_ATTRIBUTE PageAttribute,
- IN PAGE_ATTRIBUTE SplitAttribute
- )
-{
- UINT64 BaseAddress;
- UINT64 *NewPageEntry;
- UINTN Index;
-
- ASSERT (PageAttribute == Page2M || PageAttribute == Page1G);
-
- if (PageAttribute == Page2M) {
- //
- // Split 2M to 4K
- //
- ASSERT (SplitAttribute == Page4K);
- if (SplitAttribute == Page4K) {
- NewPageEntry = AllocateZeroPages (1);
- DEBUG ((DEBUG_VERBOSE, "Split - 0x%x\n", NewPageEntry));
- if (NewPageEntry == NULL) {
- return RETURN_OUT_OF_RESOURCES;
- }
- BaseAddress = PageEntry->Uint64 & PAGING_2M_ADDRESS_MASK_64;
- for (Index = 0; Index < SIZE_4KB / sizeof(UINT64); Index++) {
- NewPageEntry[Index] = (BaseAddress + SIZE_4KB * Index) | (PageEntry->Uint64 & PAGE_PROGATE_BITS);
- }
- FlushPageTableMemory (VtdIndex, (UINTN)NewPageEntry, SIZE_4KB);
-
- PageEntry->Uint64 = (UINT64)(UINTN)NewPageEntry;
- SetSecondLevelPagingEntryAttribute (PageEntry, EDKII_IOMMU_ACCESS_READ | EDKII_IOMMU_ACCESS_WRITE);
- FlushPageTableMemory (VtdIndex, (UINTN)PageEntry, sizeof(*PageEntry));
- return RETURN_SUCCESS;
- } else {
- return RETURN_UNSUPPORTED;
- }
- } else if (PageAttribute == Page1G) {
- //
- // Split 1G to 2M
- // No need support 1G->4K directly, we should use 1G->2M, then 2M->4K to get more compact page table.
- //
- ASSERT (SplitAttribute == Page2M || SplitAttribute == Page4K);
- if ((SplitAttribute == Page2M || SplitAttribute == Page4K)) {
- NewPageEntry = AllocateZeroPages (1);
- DEBUG ((DEBUG_VERBOSE, "Split - 0x%x\n", NewPageEntry));
- if (NewPageEntry == NULL) {
- return RETURN_OUT_OF_RESOURCES;
- }
- BaseAddress = PageEntry->Uint64 & PAGING_1G_ADDRESS_MASK_64;
- for (Index = 0; Index < SIZE_4KB / sizeof(UINT64); Index++) {
- NewPageEntry[Index] = (BaseAddress + SIZE_2MB * Index) | VTD_PG_PS | (PageEntry->Uint64 & PAGE_PROGATE_BITS);
- }
- FlushPageTableMemory (VtdIndex, (UINTN)NewPageEntry, SIZE_4KB);
-
- PageEntry->Uint64 = (UINT64)(UINTN)NewPageEntry;
- SetSecondLevelPagingEntryAttribute (PageEntry, EDKII_IOMMU_ACCESS_READ | EDKII_IOMMU_ACCESS_WRITE);
- FlushPageTableMemory (VtdIndex, (UINTN)PageEntry, sizeof(*PageEntry));
- return RETURN_SUCCESS;
- } else {
- return RETURN_UNSUPPORTED;
- }
- } else {
- return RETURN_UNSUPPORTED;
- }
-}
-
-/**
- Set VTd attribute for a system memory on second level page entry
-
- @param[in] VtdIndex The index used to identify a VTd engine.
- @param[in] DomainIdentifier The domain ID of the source.
- @param[in] SecondLevelPagingEntry The second level paging entry in VTd table for the device.
- @param[in] BaseAddress The base of device memory address to be used as the DMA memory.
- @param[in] Length The length of device memory address to be used as the DMA memory.
- @param[in] IoMmuAccess The IOMMU access.
-
- @retval EFI_SUCCESS The IoMmuAccess is set for the memory range specified by BaseAddress and Length.
- @retval EFI_INVALID_PARAMETER BaseAddress is not IoMmu Page size aligned.
- @retval EFI_INVALID_PARAMETER Length is not IoMmu Page size aligned.
- @retval EFI_INVALID_PARAMETER Length is 0.
- @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 BaseAddress and Length.
- @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.
-**/
-EFI_STATUS
-SetSecondLevelPagingAttribute (
- IN UINTN VtdIndex,
- IN UINT16 DomainIdentifier,
- IN VTD_SECOND_LEVEL_PAGING_ENTRY *SecondLevelPagingEntry,
- IN UINT64 BaseAddress,
- IN UINT64 Length,
- IN UINT64 IoMmuAccess
- )
-{
- VTD_SECOND_LEVEL_PAGING_ENTRY *PageEntry;
- PAGE_ATTRIBUTE PageAttribute;
- UINTN PageEntryLength;
- PAGE_ATTRIBUTE SplitAttribute;
- EFI_STATUS Status;
- BOOLEAN IsEntryModified;
-
- DEBUG ((DEBUG_VERBOSE,"SetSecondLevelPagingAttribute (%d) (0x%016lx - 0x%016lx : %x) \n", VtdIndex, BaseAddress, Length, IoMmuAccess));
- DEBUG ((DEBUG_VERBOSE," SecondLevelPagingEntry Base - 0x%x\n", SecondLevelPagingEntry));
-
- if (BaseAddress != ALIGN_VALUE(BaseAddress, SIZE_4KB)) {
- DEBUG ((DEBUG_ERROR, "SetSecondLevelPagingAttribute - Invalid Alignment\n"));
- return EFI_UNSUPPORTED;
- }
- if (Length != ALIGN_VALUE(Length, SIZE_4KB)) {
- DEBUG ((DEBUG_ERROR, "SetSecondLevelPagingAttribute - Invalid Alignment\n"));
- return EFI_UNSUPPORTED;
- }
-
- while (Length != 0) {
- PageEntry = GetSecondLevelPageTableEntry (VtdIndex, SecondLevelPagingEntry, BaseAddress, &PageAttribute);
- if (PageEntry == NULL) {
- DEBUG ((DEBUG_ERROR, "PageEntry - NULL\n"));
- return RETURN_UNSUPPORTED;
- }
- PageEntryLength = PageAttributeToLength (PageAttribute);
- SplitAttribute = NeedSplitPage (BaseAddress, Length, PageAttribute);
- if (SplitAttribute == PageNone) {
- ConvertSecondLevelPageEntryAttribute (VtdIndex, PageEntry, IoMmuAccess, &IsEntryModified);
- if (IsEntryModified) {
- mVtdUnitInformation[VtdIndex].HasDirtyPages = TRUE;
- }
- //
- // Convert success, move to next
- //
- BaseAddress += PageEntryLength;
- Length -= PageEntryLength;
- } else {
- Status = SplitSecondLevelPage (VtdIndex, PageEntry, PageAttribute, SplitAttribute);
- if (RETURN_ERROR (Status)) {
- DEBUG ((DEBUG_ERROR, "SplitSecondLevelPage - %r\n", Status));
- return RETURN_UNSUPPORTED;
- }
- mVtdUnitInformation[VtdIndex].HasDirtyPages = TRUE;
- //
- // Just split current page
- // Convert success in next around
- //
- }
- }
-
- return EFI_SUCCESS;
-}
-
-/**
- Set VTd attribute for a system memory.
-
- @param[in] VtdIndex The index used to identify a VTd engine.
- @param[in] DomainIdentifier The domain ID of the source.
- @param[in] SecondLevelPagingEntry The second level paging entry in VTd table for the device.
- @param[in] BaseAddress The base of device memory address to be used as the DMA memory.
- @param[in] Length The length of device memory address to be used as the DMA memory.
- @param[in] IoMmuAccess The IOMMU access.
-
- @retval EFI_SUCCESS The IoMmuAccess is set for the memory range specified by BaseAddress and Length.
- @retval EFI_INVALID_PARAMETER BaseAddress is not IoMmu Page size aligned.
- @retval EFI_INVALID_PARAMETER Length is not IoMmu Page size aligned.
- @retval EFI_INVALID_PARAMETER Length is 0.
- @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 BaseAddress and Length.
- @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.
-**/
-EFI_STATUS
-SetPageAttribute (
- IN UINTN VtdIndex,
- IN UINT16 DomainIdentifier,
- IN VTD_SECOND_LEVEL_PAGING_ENTRY *SecondLevelPagingEntry,
- IN UINT64 BaseAddress,
- IN UINT64 Length,
- IN UINT64 IoMmuAccess
- )
-{
- EFI_STATUS Status;
- Status = EFI_NOT_FOUND;
- if (SecondLevelPagingEntry != NULL) {
- Status = SetSecondLevelPagingAttribute (VtdIndex, DomainIdentifier, SecondLevelPagingEntry, BaseAddress, Length, IoMmuAccess);
- }
- return Status;
-}
-
-/**
- Set VTd attribute for a system memory.
-
- @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.
- @param[in] BaseAddress The base of device memory address to be used as the DMA memory.
- @param[in] Length The length of device memory address to be used as the DMA memory.
- @param[in] IoMmuAccess The IOMMU access.
-
- @retval EFI_SUCCESS The IoMmuAccess is set for the memory range specified by BaseAddress and Length.
- @retval EFI_INVALID_PARAMETER BaseAddress is not IoMmu Page size aligned.
- @retval EFI_INVALID_PARAMETER Length is not IoMmu Page size aligned.
- @retval EFI_INVALID_PARAMETER Length is 0.
- @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 BaseAddress and Length.
- @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.
-**/
-EFI_STATUS
-SetAccessAttribute (
- IN UINT16 Segment,
- IN VTD_SOURCE_ID SourceId,
- IN UINT64 BaseAddress,
- IN UINT64 Length,
- IN UINT64 IoMmuAccess
- )
-{
- UINTN VtdIndex;
- EFI_STATUS Status;
- VTD_EXT_CONTEXT_ENTRY *ExtContextEntry;
- VTD_CONTEXT_ENTRY *ContextEntry;
- VTD_SECOND_LEVEL_PAGING_ENTRY *SecondLevelPagingEntry;
- UINT64 Pt;
- UINTN PciDataIndex;
- UINT16 DomainIdentifier;
-
- SecondLevelPagingEntry = NULL;
-
- DEBUG ((DEBUG_VERBOSE,"SetAccessAttribute (S%04x B%02x D%02x F%02x) (0x%016lx - 0x%08x, %x)\n", Segment, SourceId.Bits.Bus, SourceId.Bits.Device, SourceId.Bits.Function, BaseAddress, (UINTN)Length, IoMmuAccess));
-
- VtdIndex = FindVtdIndexByPciDevice (Segment, SourceId, &ExtContextEntry, &ContextEntry);
- if (VtdIndex == (UINTN)-1) {
- DEBUG ((DEBUG_ERROR,"SetAccessAttribute - Pci device (S%04x B%02x D%02x F%02x) not found!\n", Segment, SourceId.Bits.Bus, SourceId.Bits.Device, SourceId.Bits.Function));
- return EFI_DEVICE_ERROR;
- }
-
- PciDataIndex = GetPciDataIndex (VtdIndex, Segment, SourceId);
- mVtdUnitInformation[VtdIndex].PciDeviceInfo.PciDeviceData[PciDataIndex].AccessCount++;
- //
- // DomainId should not be 0.
- //
- DomainIdentifier = (UINT16)(PciDataIndex + 1);
-
- if (ExtContextEntry != NULL) {
- if (ExtContextEntry->Bits.Present == 0) {
- SecondLevelPagingEntry = CreateSecondLevelPagingEntry (VtdIndex, 0);
- DEBUG ((DEBUG_VERBOSE,"SecondLevelPagingEntry - 0x%x (S%04x B%02x D%02x F%02x) New\n", SecondLevelPagingEntry, Segment, SourceId.Bits.Bus, SourceId.Bits.Device, SourceId.Bits.Function));
- Pt = (UINT64)RShiftU64 ((UINT64)(UINTN)SecondLevelPagingEntry, 12);
-
- ExtContextEntry->Bits.SecondLevelPageTranslationPointerLo = (UINT32) Pt;
- ExtContextEntry->Bits.SecondLevelPageTranslationPointerHi = (UINT32) RShiftU64(Pt, 20);
- ExtContextEntry->Bits.DomainIdentifier = DomainIdentifier;
- ExtContextEntry->Bits.Present = 1;
- FlushPageTableMemory (VtdIndex, (UINTN)ExtContextEntry, sizeof(*ExtContextEntry));
- DumpDmarExtContextEntryTable (mVtdUnitInformation[VtdIndex].ExtRootEntryTable);
- mVtdUnitInformation[VtdIndex].HasDirtyContext = TRUE;
- } else {
- SecondLevelPagingEntry = (VOID *)(UINTN)VTD_64BITS_ADDRESS(ExtContextEntry->Bits.SecondLevelPageTranslationPointerLo, ExtContextEntry->Bits.SecondLevelPageTranslationPointerHi);
- DEBUG ((DEBUG_VERBOSE,"SecondLevelPagingEntry - 0x%x (S%04x B%02x D%02x F%02x)\n", SecondLevelPagingEntry, Segment, SourceId.Bits.Bus, SourceId.Bits.Device, SourceId.Bits.Function));
- }
- } else if (ContextEntry != NULL) {
- if (ContextEntry->Bits.Present == 0) {
- SecondLevelPagingEntry = CreateSecondLevelPagingEntry (VtdIndex, 0);
- DEBUG ((DEBUG_VERBOSE,"SecondLevelPagingEntry - 0x%x (S%04x B%02x D%02x F%02x) New\n", SecondLevelPagingEntry, Segment, SourceId.Bits.Bus, SourceId.Bits.Device, SourceId.Bits.Function));
- Pt = (UINT64)RShiftU64 ((UINT64)(UINTN)SecondLevelPagingEntry, 12);
-
- ContextEntry->Bits.SecondLevelPageTranslationPointerLo = (UINT32) Pt;
- ContextEntry->Bits.SecondLevelPageTranslationPointerHi = (UINT32) RShiftU64(Pt, 20);
- ContextEntry->Bits.DomainIdentifier = DomainIdentifier;
- ContextEntry->Bits.Present = 1;
- FlushPageTableMemory (VtdIndex, (UINTN)ContextEntry, sizeof(*ContextEntry));
- DumpDmarContextEntryTable (mVtdUnitInformation[VtdIndex].RootEntryTable);
- mVtdUnitInformation[VtdIndex].HasDirtyContext = TRUE;
- } else {
- SecondLevelPagingEntry = (VOID *)(UINTN)VTD_64BITS_ADDRESS(ContextEntry->Bits.SecondLevelPageTranslationPointerLo, ContextEntry->Bits.SecondLevelPageTranslationPointerHi);
- DEBUG ((DEBUG_VERBOSE,"SecondLevelPagingEntry - 0x%x (S%04x B%02x D%02x F%02x)\n", SecondLevelPagingEntry, Segment, SourceId.Bits.Bus, SourceId.Bits.Device, SourceId.Bits.Function));
- }
- }
-
- //
- // Do not update FixedSecondLevelPagingEntry
- //
- if (SecondLevelPagingEntry != mVtdUnitInformation[VtdIndex].FixedSecondLevelPagingEntry) {
- Status = SetPageAttribute (
- VtdIndex,
- DomainIdentifier,
- SecondLevelPagingEntry,
- BaseAddress,
- Length,
- IoMmuAccess
- );
- if (EFI_ERROR (Status)) {
- DEBUG ((DEBUG_ERROR,"SetPageAttribute - %r\n", Status));
- return Status;
- }
- }
-
- InvalidatePageEntry (VtdIndex);
-
- return EFI_SUCCESS;
-}
-
-/**
- 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
- )
-{
- UINTN VtdIndex;
- VTD_EXT_CONTEXT_ENTRY *ExtContextEntry;
- VTD_CONTEXT_ENTRY *ContextEntry;
- VTD_SECOND_LEVEL_PAGING_ENTRY *SecondLevelPagingEntry;
- UINT64 Pt;
-
- DEBUG ((DEBUG_INFO,"AlwaysEnablePageAttribute (S%04x B%02x D%02x F%02x)\n", Segment, SourceId.Bits.Bus, SourceId.Bits.Device, SourceId.Bits.Function));
-
- VtdIndex = FindVtdIndexByPciDevice (Segment, SourceId, &ExtContextEntry, &ContextEntry);
- if (VtdIndex == (UINTN)-1) {
- DEBUG ((DEBUG_ERROR,"AlwaysEnablePageAttribute - Pci device (S%04x B%02x D%02x F%02x) not found!\n", Segment, SourceId.Bits.Bus, SourceId.Bits.Device, SourceId.Bits.Function));
- return EFI_DEVICE_ERROR;
- }
-
- if (mVtdUnitInformation[VtdIndex].FixedSecondLevelPagingEntry == 0) {
- DEBUG((DEBUG_INFO, "CreateSecondLevelPagingEntry - %d\n", VtdIndex));
- mVtdUnitInformation[VtdIndex].FixedSecondLevelPagingEntry = CreateSecondLevelPagingEntry (VtdIndex, EDKII_IOMMU_ACCESS_READ | EDKII_IOMMU_ACCESS_WRITE);
- }
-
- SecondLevelPagingEntry = mVtdUnitInformation[VtdIndex].FixedSecondLevelPagingEntry;
- Pt = (UINT64)RShiftU64 ((UINT64)(UINTN)SecondLevelPagingEntry, 12);
- if (ExtContextEntry != NULL) {
- ExtContextEntry->Bits.SecondLevelPageTranslationPointerLo = (UINT32) Pt;
- ExtContextEntry->Bits.SecondLevelPageTranslationPointerHi = (UINT32) RShiftU64(Pt, 20);
- ExtContextEntry->Bits.DomainIdentifier = ((1 << (UINT8)((UINTN)mVtdUnitInformation[VtdIndex].CapReg.Bits.ND * 2 + 4)) - 1);
- ExtContextEntry->Bits.Present = 1;
- FlushPageTableMemory (VtdIndex, (UINTN)ExtContextEntry, sizeof(*ExtContextEntry));
- } else if (ContextEntry != NULL) {
- ContextEntry->Bits.SecondLevelPageTranslationPointerLo = (UINT32) Pt;
- ContextEntry->Bits.SecondLevelPageTranslationPointerHi = (UINT32) RShiftU64(Pt, 20);
- ContextEntry->Bits.DomainIdentifier = ((1 << (UINT8)((UINTN)mVtdUnitInformation[VtdIndex].CapReg.Bits.ND * 2 + 4)) - 1);
- ContextEntry->Bits.Present = 1;
- FlushPageTableMemory (VtdIndex, (UINTN)ContextEntry, sizeof(*ContextEntry));
- }
-
- return EFI_SUCCESS;
-}
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