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| author | Zhichao Gao <zhichao.gao@intel.com> | 2019-05-09 11:11:55 +0800 |
|---|---|---|
| committer | Liming Gao <liming.gao@intel.com> | 2019-05-10 08:34:45 +0800 |
| commit | 30a888b5a0a01eb9ce79b46af9937e997a30ae5c (patch) | |
| tree | 5bab054ef0ab73c2f56767ddf3cab75a14a418f2 | |
| parent | 0a506fc7ab8b5df2944d2e4602a46fbef57edc82 (diff) | |
| download | edk2-30a888b5a0a01eb9ce79b46af9937e997a30ae5c.tar.gz edk2-30a888b5a0a01eb9ce79b46af9937e997a30ae5c.tar.bz2 edk2-30a888b5a0a01eb9ce79b46af9937e997a30ae5c.zip | |
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>
| -rw-r--r-- | IntelSiliconPkg/Feature/VTd/IntelVTdDxe/DmaProtection.c | 13 | ||||
| -rw-r--r-- | IntelSiliconPkg/Feature/VTd/IntelVTdDxe/DmaProtection.h | 32 |
2 files changed, 43 insertions, 2 deletions
diff --git a/IntelSiliconPkg/Feature/VTd/IntelVTdDxe/DmaProtection.c b/IntelSiliconPkg/Feature/VTd/IntelVTdDxe/DmaProtection.c index f221e45938..956ebb2d3d 100644 --- a/IntelSiliconPkg/Feature/VTd/IntelVTdDxe/DmaProtection.c +++ b/IntelSiliconPkg/Feature/VTd/IntelVTdDxe/DmaProtection.c @@ -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 ();
diff --git a/IntelSiliconPkg/Feature/VTd/IntelVTdDxe/DmaProtection.h b/IntelSiliconPkg/Feature/VTd/IntelVTdDxe/DmaProtection.h index 72426d23c3..a3331db8f7 100644 --- a/IntelSiliconPkg/Feature/VTd/IntelVTdDxe/DmaProtection.h +++ b/IntelSiliconPkg/Feature/VTd/IntelVTdDxe/DmaProtection.h @@ -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
**/
@@ -169,6 +169,36 @@ DisableDmar ( );
/**
+ 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.
@param[in] VtdIndex The index of VTd engine.
|