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MdePkg/IoLib: Filter/trace port IO/MMIO access

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REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3246

Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Cc: Zhiguang Liu <zhiguang.liu@intel.com>
Signed-off-by: Dandan Bi <dandan.bi@intel.com>
Reviewed-by: Michael D Kinney <michael.d.kinney@intel.com>
Reviewed-by: Liming Gao <gaoliming@byosoft.com.cn>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
This commit is contained in:
Dandan Bi
2021-03-12 10:26:10 +08:00
committed by mergify[bot]
parent 9c08b3e7d5
commit 38c8be123a
9 changed files with 329 additions and 73 deletions
Download Patch File Download Diff File Expand all files Collapse all files

81
MdePkg/Library/BaseIoLibIntrinsic/IoLibMsc.c
View File

@@ -8,7 +8,7 @@
We don't advocate putting compiler specifics in libraries or drivers but there
is no other way to make this work.
Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2006 - 2021, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
@@ -66,10 +66,16 @@ IoRead8 (
)
{
UINT8 Value;
BOOLEAN Flag;
Flag = FilterBeforeIoRead (FilterWidth8, Port, &Value);
if (Flag) {
_ReadWriteBarrier ();
Value = (UINT8)_inp ((UINT16)Port);
_ReadWriteBarrier ();
}
FilterAfterIoRead (FilterWidth8, Port, &Value);
_ReadWriteBarrier ();
Value = (UINT8)_inp ((UINT16)Port);
_ReadWriteBarrier ();
return Value;
}
@@ -95,9 +101,16 @@ IoWrite8 (
IN UINT8 Value
)
{
_ReadWriteBarrier ();
(UINT8)_outp ((UINT16)Port, Value);
_ReadWriteBarrier ();
BOOLEAN Flag;
Flag = FilterBeforeIoWrite(FilterWidth8, Port, &Value);
if (Flag) {
_ReadWriteBarrier ();
(UINT8)_outp ((UINT16)Port, Value);
_ReadWriteBarrier ();
}
FilterAfterIoWrite (FilterWidth8, Port, &Value);
return Value;
}
@@ -123,11 +136,18 @@ IoRead16 (
)
{
UINT16 Value;
BOOLEAN Flag;
ASSERT ((Port & 1) == 0);
_ReadWriteBarrier ();
Value = _inpw ((UINT16)Port);
_ReadWriteBarrier ();
Flag = FilterBeforeIoRead (FilterWidth16, Port, &Value);
if (Flag) {
_ReadWriteBarrier ();
Value = _inpw ((UINT16)Port);
_ReadWriteBarrier ();
}
FilterBeforeIoRead (FilterWidth16, Port, &Value);
return Value;
}
@@ -154,10 +174,18 @@ IoWrite16 (
IN UINT16 Value
)
{
BOOLEAN Flag;
ASSERT ((Port & 1) == 0);
_ReadWriteBarrier ();
_outpw ((UINT16)Port, Value);
_ReadWriteBarrier ();
Flag = FilterBeforeIoWrite(FilterWidth16, Port, &Value);
if (Flag) {
_ReadWriteBarrier ();
_outpw ((UINT16)Port, Value);
_ReadWriteBarrier ();
}
FilterAfterIoWrite (FilterWidth16, Port, &Value);
return Value;
}
@@ -183,11 +211,18 @@ IoRead32 (
)
{
UINT32 Value;
BOOLEAN Flag;
ASSERT ((Port & 3) == 0);
_ReadWriteBarrier ();
Value = _inpd ((UINT16)Port);
_ReadWriteBarrier ();
Flag = FilterBeforeIoRead(FilterWidth32, Port, &Value);
if (Flag) {
_ReadWriteBarrier ();
Value = _inpd ((UINT16)Port);
_ReadWriteBarrier ();
}
FilterAfterIoRead (FilterWidth32, Port, &Value);
return Value;
}
@@ -214,9 +249,17 @@ IoWrite32 (
IN UINT32 Value
)
{
BOOLEAN Flag;
ASSERT ((Port & 3) == 0);
_ReadWriteBarrier ();
_outpd ((UINT16)Port, Value);
_ReadWriteBarrier ();
Flag = FilterBeforeIoWrite(FilterWidth32, Port, &Value);
if (Flag) {
_ReadWriteBarrier ();
_outpd ((UINT16)Port, Value);
_ReadWriteBarrier ();
}
FilterAfterIoWrite (FilterWidth32, Port, &Value);
return Value;
}