diff options
Diffstat (limited to 'IntelSiliconPkg/Feature/VTd/IntelVTdPmrPei/IntelVTdPmr.c')
| -rw-r--r-- | IntelSiliconPkg/Feature/VTd/IntelVTdPmrPei/IntelVTdPmr.c | 420 |
1 files changed, 0 insertions, 420 deletions
diff --git a/IntelSiliconPkg/Feature/VTd/IntelVTdPmrPei/IntelVTdPmr.c b/IntelSiliconPkg/Feature/VTd/IntelVTdPmrPei/IntelVTdPmr.c deleted file mode 100644 index 37283f0fab..0000000000 --- a/IntelSiliconPkg/Feature/VTd/IntelVTdPmrPei/IntelVTdPmr.c +++ /dev/null @@ -1,420 +0,0 @@ -/** @file
-
- Copyright (c) 2017, Intel Corporation. All rights reserved.<BR>
-
- SPDX-License-Identifier: BSD-2-Clause-Patent
-
-**/
-
-#include <PiPei.h>
-#include <Library/BaseLib.h>
-#include <Library/BaseMemoryLib.h>
-#include <Library/IoLib.h>
-#include <Library/DebugLib.h>
-#include <IndustryStandard/Vtd.h>
-#include <Ppi/VtdInfo.h>
-
-#include "IntelVTdPmrPei.h"
-
-/**
- Get protected low memory alignment.
-
- @param HostAddressWidth The host address width.
- @param VtdUnitBaseAddress The base address of the VTd engine.
-
- @return protected low memory alignment.
-**/
-UINT32
-GetPlmrAlignment (
- IN UINT8 HostAddressWidth,
- IN UINTN VtdUnitBaseAddress
- )
-{
- UINT32 Data32;
-
- MmioWrite32 (VtdUnitBaseAddress + R_PMEN_LOW_BASE_REG, 0xFFFFFFFF);
- Data32 = MmioRead32 (VtdUnitBaseAddress + R_PMEN_LOW_BASE_REG);
- Data32 = ~Data32 + 1;
-
- return Data32;
-}
-
-/**
- Get protected high memory alignment.
-
- @param HostAddressWidth The host address width.
- @param VtdUnitBaseAddress The base address of the VTd engine.
-
- @return protected high memory alignment.
-**/
-UINT64
-GetPhmrAlignment (
- IN UINT8 HostAddressWidth,
- IN UINTN VtdUnitBaseAddress
- )
-{
- UINT64 Data64;
-
- MmioWrite64 (VtdUnitBaseAddress + R_PMEN_HIGH_BASE_REG, 0xFFFFFFFFFFFFFFFF);
- Data64 = MmioRead64 (VtdUnitBaseAddress + R_PMEN_HIGH_BASE_REG);
- Data64 = ~Data64 + 1;
- Data64 = Data64 & (LShiftU64 (1, HostAddressWidth) - 1);
-
- return Data64;
-}
-
-/**
- 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
- )
-{
- UINTN Index;
- UINT32 Alignment;
- UINT32 FinalAlignment;
-
- FinalAlignment = 0;
- for (Index = 0; Index < VTdInfo->VTdEngineCount; Index++) {
- if ((EngineMask & LShiftU64(1, Index)) == 0) {
- continue;
- }
- Alignment = GetPlmrAlignment (VTdInfo->HostAddressWidth, (UINTN)VTdInfo->VTdEngineAddress[Index]);
- if (FinalAlignment < Alignment) {
- FinalAlignment = Alignment;
- }
- }
- return FinalAlignment;
-}
-
-/**
- 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
- )
-{
- UINTN Index;
- UINT64 Alignment;
- UINT64 FinalAlignment;
-
- FinalAlignment = 0;
- for (Index = 0; Index < VTdInfo->VTdEngineCount; Index++) {
- if ((EngineMask & LShiftU64(1, Index)) == 0) {
- continue;
- }
- Alignment = GetPhmrAlignment (VTdInfo->HostAddressWidth, (UINTN)VTdInfo->VTdEngineAddress[Index]);
- if (FinalAlignment < Alignment) {
- FinalAlignment = Alignment;
- }
- }
- return FinalAlignment;
-}
-
-/**
- Enable PMR in the VTd engine.
-
- @param VtdUnitBaseAddress The base address of the VTd engine.
-
- @retval EFI_SUCCESS The PMR is enabled.
- @retval EFI_UNSUPPORTED The PMR is not supported.
-**/
-EFI_STATUS
-EnablePmr (
- IN UINTN VtdUnitBaseAddress
- )
-{
- UINT32 Reg32;
- VTD_CAP_REG CapReg;
-
- DEBUG ((DEBUG_INFO, "EnablePmr - %x\n", VtdUnitBaseAddress));
-
- CapReg.Uint64 = MmioRead64 (VtdUnitBaseAddress + R_CAP_REG);
- if (CapReg.Bits.PLMR == 0 || CapReg.Bits.PHMR == 0) {
- return EFI_UNSUPPORTED;
- }
-
- Reg32 = MmioRead32 (VtdUnitBaseAddress + R_PMEN_ENABLE_REG);
- if (Reg32 == 0xFFFFFFFF) {
- DEBUG ((DEBUG_ERROR, "R_PMEN_ENABLE_REG - 0x%x\n", Reg32));
- ASSERT(FALSE);
- }
-
- if ((Reg32 & BIT0) == 0) {
- MmioWrite32 (VtdUnitBaseAddress + R_PMEN_ENABLE_REG, BIT31);
- do {
- Reg32 = MmioRead32 (VtdUnitBaseAddress + R_PMEN_ENABLE_REG);
- } while((Reg32 & BIT0) == 0);
- }
-
- DEBUG ((DEBUG_INFO, "EnablePmr - Done\n"));
-
- return EFI_SUCCESS;
-}
-
-/**
- Disable PMR in the VTd engine.
-
- @param VtdUnitBaseAddress The base address of the VTd engine.
-
- @retval EFI_SUCCESS The PMR is disabled.
- @retval EFI_UNSUPPORTED The PMR is not supported.
-**/
-EFI_STATUS
-DisablePmr (
- IN UINTN VtdUnitBaseAddress
- )
-{
- UINT32 Reg32;
- VTD_CAP_REG CapReg;
-
- CapReg.Uint64 = MmioRead64 (VtdUnitBaseAddress + R_CAP_REG);
- if (CapReg.Bits.PLMR == 0 || CapReg.Bits.PHMR == 0) {
- return EFI_UNSUPPORTED;
- }
-
- Reg32 = MmioRead32 (VtdUnitBaseAddress + R_PMEN_ENABLE_REG);
- if (Reg32 == 0xFFFFFFFF) {
- DEBUG ((DEBUG_ERROR, "R_PMEN_ENABLE_REG - 0x%x\n", Reg32));
- ASSERT(FALSE);
- }
-
- if ((Reg32 & BIT0) != 0) {
- MmioWrite32 (VtdUnitBaseAddress + R_PMEN_ENABLE_REG, 0x0);
- do {
- Reg32 = MmioRead32 (VtdUnitBaseAddress + R_PMEN_ENABLE_REG);
- } while((Reg32 & BIT0) != 0);
- }
-
- return EFI_SUCCESS;
-}
-
-/**
- Set PMR region in the VTd engine.
-
- @param HostAddressWidth The host address width.
- @param VtdUnitBaseAddress The base address of the VTd engine.
- @param LowMemoryBase The protected low memory region base.
- @param LowMemoryLength The protected low memory region length.
- @param HighMemoryBase The protected high memory region base.
- @param HighMemoryLength The protected high memory region length.
-
- @retval EFI_SUCCESS The PMR is set to protected region.
- @retval EFI_UNSUPPORTED The PMR is not supported.
-**/
-EFI_STATUS
-SetPmrRegion (
- IN UINT8 HostAddressWidth,
- IN UINTN VtdUnitBaseAddress,
- IN UINT32 LowMemoryBase,
- IN UINT32 LowMemoryLength,
- IN UINT64 HighMemoryBase,
- IN UINT64 HighMemoryLength
- )
-{
- VTD_CAP_REG CapReg;
- UINT32 PlmrAlignment;
- UINT64 PhmrAlignment;
-
- DEBUG ((DEBUG_INFO, "VtdUnitBaseAddress - 0x%x\n", VtdUnitBaseAddress));
-
- CapReg.Uint64 = MmioRead64 (VtdUnitBaseAddress + R_CAP_REG);
- if (CapReg.Bits.PLMR == 0 || CapReg.Bits.PHMR == 0) {
- DEBUG ((DEBUG_ERROR, "PLMR/PHMR unsupported\n"));
- return EFI_UNSUPPORTED;
- }
-
- PlmrAlignment = GetPlmrAlignment (HostAddressWidth, VtdUnitBaseAddress);
- DEBUG ((DEBUG_INFO, "PlmrAlignment - 0x%x\n", PlmrAlignment));
- PhmrAlignment = GetPhmrAlignment (HostAddressWidth, VtdUnitBaseAddress);
- DEBUG ((DEBUG_INFO, "PhmrAlignment - 0x%lx\n", PhmrAlignment));
-
- if ((LowMemoryBase != ALIGN_VALUE(LowMemoryBase, PlmrAlignment)) ||
- (LowMemoryLength != ALIGN_VALUE(LowMemoryLength, PlmrAlignment)) ||
- (HighMemoryBase != ALIGN_VALUE(HighMemoryBase, PhmrAlignment)) ||
- (HighMemoryLength != ALIGN_VALUE(HighMemoryLength, PhmrAlignment))) {
- DEBUG ((DEBUG_ERROR, "PLMR/PHMR alignment issue\n"));
- return EFI_UNSUPPORTED;
- }
-
- if (LowMemoryBase == 0 && LowMemoryLength == 0) {
- LowMemoryBase = 0xFFFFFFFF;
- }
- if (HighMemoryBase == 0 && HighMemoryLength == 0) {
- HighMemoryBase = 0xFFFFFFFFFFFFFFFF;
- }
-
- MmioWrite32 (VtdUnitBaseAddress + R_PMEN_LOW_BASE_REG, LowMemoryBase);
- MmioWrite32 (VtdUnitBaseAddress + R_PMEN_LOW_LIMITE_REG, LowMemoryBase + LowMemoryLength - 1);
- DEBUG ((DEBUG_INFO, "PLMR set done\n"));
- MmioWrite64 (VtdUnitBaseAddress + R_PMEN_HIGH_BASE_REG, HighMemoryBase);
- MmioWrite64 (VtdUnitBaseAddress + R_PMEN_HIGH_LIMITE_REG, HighMemoryBase + HighMemoryLength - 1);
- DEBUG ((DEBUG_INFO, "PHMR set done\n"));
-
- return EFI_SUCCESS;
-}
-
-/**
- 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.
- @param HighMemoryBase The protected high memory region base.
- @param HighMemoryLength The protected high memory region length.
-
- @retval EFI_SUCCESS The DMA protection is set.
- @retval EFI_UNSUPPORTED The DMA protection is not set.
-**/
-EFI_STATUS
-SetDmaProtectedRange (
- IN VTD_INFO *VTdInfo,
- IN UINT64 EngineMask,
- IN UINT32 LowMemoryBase,
- IN UINT32 LowMemoryLength,
- IN UINT64 HighMemoryBase,
- IN UINT64 HighMemoryLength
- )
-{
- UINTN Index;
- EFI_STATUS Status;
-
- DEBUG ((DEBUG_INFO, "SetDmaProtectedRange(0x%lx) - [0x%x, 0x%x] [0x%lx, 0x%lx]\n", EngineMask, LowMemoryBase, LowMemoryLength, HighMemoryBase, HighMemoryLength));
-
- for (Index = 0; Index < VTdInfo->VTdEngineCount; Index++) {
- if ((EngineMask & LShiftU64(1, Index)) == 0) {
- continue;
- }
- DisablePmr ((UINTN)VTdInfo->VTdEngineAddress[Index]);
- Status = SetPmrRegion (
- VTdInfo->HostAddressWidth,
- (UINTN)VTdInfo->VTdEngineAddress[Index],
- LowMemoryBase,
- LowMemoryLength,
- HighMemoryBase,
- HighMemoryLength
- );
- if (EFI_ERROR(Status)) {
- return Status;
- }
- Status = EnablePmr ((UINTN)VTdInfo->VTdEngineAddress[Index]);
- if (EFI_ERROR(Status)) {
- return Status;
- }
- }
-
- return EFI_SUCCESS;
-}
-
-/**
- Diable DMA protection.
-
- @param VTdInfo The VTd engine context information.
- @param EngineMask The mask of the VTd engine to be accessed.
-
- @retval EFI_SUCCESS DMA protection is disabled.
-**/
-EFI_STATUS
-DisableDmaProtection (
- IN VTD_INFO *VTdInfo,
- IN UINT64 EngineMask
- )
-{
- UINTN Index;
- EFI_STATUS Status;
-
- DEBUG ((DEBUG_INFO, "DisableDmaProtection - 0x%lx\n", EngineMask));
-
- for (Index = 0; Index < VTdInfo->VTdEngineCount; Index++) {
- DEBUG ((DEBUG_INFO, "Disabling...%d\n", Index));
-
- if ((EngineMask & LShiftU64(1, Index)) == 0) {
- continue;
- }
- Status = DisablePmr ((UINTN)VTdInfo->VTdEngineAddress[Index]);
- if (EFI_ERROR(Status)) {
- return Status;
- }
- }
-
- return EFI_SUCCESS;
-}
-
-/**
- Return if the PMR is enabled.
-
- @param VtdUnitBaseAddress The base address of the VTd engine.
-
- @retval TRUE PMR is enabled.
- @retval FALSE PMR is disabled or unsupported.
-**/
-BOOLEAN
-IsPmrEnabled (
- IN UINTN VtdUnitBaseAddress
- )
-{
- UINT32 Reg32;
- VTD_CAP_REG CapReg;
-
- CapReg.Uint64 = MmioRead64 (VtdUnitBaseAddress + R_CAP_REG);
- if (CapReg.Bits.PLMR == 0 || CapReg.Bits.PHMR == 0) {
- return FALSE;
- }
-
- Reg32 = MmioRead32 (VtdUnitBaseAddress + R_PMEN_ENABLE_REG);
- if ((Reg32 & BIT0) == 0) {
- return FALSE;
- }
-
- return TRUE;
-}
-
-/**
- Return the mask of the VTd engine which is enabled.
-
- @param VTdInfo The VTd engine context information.
- @param EngineMask The mask of the VTd engine to be accessed.
-
- @return the mask of the VTd engine which is enabled.
-**/
-UINT64
-GetDmaProtectionEnabledEngineMask (
- IN VTD_INFO *VTdInfo,
- IN UINT64 EngineMask
- )
-{
- UINTN Index;
- BOOLEAN Result;
- UINT64 EnabledEngineMask;
-
- DEBUG ((DEBUG_INFO, "GetDmaProtectionEnabledEngineMask - 0x%lx\n", EngineMask));
-
- EnabledEngineMask = 0;
- for (Index = 0; Index < VTdInfo->VTdEngineCount; Index++) {
- if ((EngineMask & LShiftU64(1, Index)) == 0) {
- continue;
- }
- Result = IsPmrEnabled ((UINTN)VTdInfo->VTdEngineAddress[Index]);
- if (Result) {
- EnabledEngineMask |= LShiftU64(1, Index);
- }
- }
-
- DEBUG ((DEBUG_INFO, "EnabledEngineMask - 0x%lx\n", EnabledEngineMask));
- return EnabledEngineMask;
-}
|