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IntelSiliconPkg/IntelVTdDxe: Do global invalidation before boot 

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1547

V2:
Abandon V1.
Do global invalidation of context-cache and IOTLB at
ExitBootServices.

V1:
Only doing IOTLB invalidation would cause a BSOD
'DRIVER_VERIFIER_DMA_VIOLATION' while changing the second
level page entry's attributes. So always do the global
invalidation of context-cache and IOTLB.

Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Chasel Chiu <chasel.chiu@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Cc: Rangasai V Chaganty <rangasai.v.chaganty@intel.com>
Signed-off-by: Zhichao Gao <zhichao.gao@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
Reviewed-by: Chasel Chiu <chasel.chiu@intel.com>
This commit is contained in:
Zhichao Gao 2019-05-09 11:11:55 +08:00 committed by Liming Gao
parent 0a506fc7ab
commit 30a888b5a0
2 changed files with 43 additions and 2 deletions
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13
IntelSiliconPkg/Feature/VTd/IntelVTdDxe/DmaProtection.c
View File

@ -1,6 +1,6 @@
/** @file
Copyright (c) 2017 - 2018, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2017 - 2019, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
@ -581,9 +581,20 @@ OnExitBootServices (
IN VOID *Context
)
{
UINTN VtdIndex;
DEBUG ((DEBUG_INFO, "Vtd OnExitBootServices\n"));
DumpVtdRegsAll ();
DEBUG ((DEBUG_INFO, "Invalidate all\n"));
for (VtdIndex = 0; VtdIndex < mVtdUnitNumber; VtdIndex++) {
FlushWriteBuffer (VtdIndex);
InvalidateContextCache (VtdIndex);
InvalidateIOTLB (VtdIndex);
}
if ((PcdGet8(PcdVTdPolicyPropertyMask) & BIT1) == 0) {
DisableDmar ();
DumpVtdRegsAll ();

32
IntelSiliconPkg/Feature/VTd/IntelVTdDxe/DmaProtection.h
View File

@ -1,6 +1,6 @@
/** @file
Copyright (c) 2017 - 2018, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2017 - 2019, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
@ -168,6 +168,36 @@ DisableDmar (
VOID
);
/**
Flush VTd engine write buffer.
@param[in] VtdIndex The index used to identify a VTd engine.
**/
VOID
FlushWriteBuffer (
IN UINTN VtdIndex
);
/**
Invalidate VTd context cache.
@param[in] VtdIndex The index used to identify a VTd engine.
**/
EFI_STATUS
InvalidateContextCache (
IN UINTN VtdIndex
);
/**
Invalidate VTd IOTLB.
@param[in] VtdIndex The index used to identify a VTd engine.
**/
EFI_STATUS
InvalidateIOTLB (
IN UINTN VtdIndex
);
/**
Invalid VTd global IOTLB.