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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
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58
MdePkg/Library/BaseIoLibIntrinsic/IoLibGcc.c
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@@ -10,7 +10,7 @@
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
**/
@@ -39,8 +39,14 @@ IoRead8 (
)
{
UINT8 Data;
BOOLEAN Flag;
Flag = FilterBeforeIoRead (FilterWidth8, Port, &Data);
if (Flag) {
__asm__ __volatile__ ("inb %w1,%b0" : "=a" (Data) : "d" ((UINT16)Port));
}
FilterAfterIoRead (FilterWidth8, Port, &Data);
__asm__ __volatile__ ("inb %w1,%b0" : "=a" (Data) : "d" ((UINT16)Port));
return Data;
}
@@ -66,7 +72,14 @@ IoWrite8 (
IN UINT8 Value
)
{
__asm__ __volatile__ ("outb %b0,%w1" : : "a" (Value), "d" ((UINT16)Port));
BOOLEAN Flag;
Flag = FilterBeforeIoWrite (FilterWidth8, Port, &Value);
if (Flag) {
__asm__ __volatile__ ("outb %b0,%w1" : : "a" (Value), "d" ((UINT16)Port));
}
FilterAfterIoWrite (FilterWidth8, Port, &Value);
return Value;;
}
@@ -92,9 +105,16 @@ IoRead16 (
)
{
UINT16 Data;
BOOLEAN Flag;
ASSERT ((Port & 1) == 0);
__asm__ __volatile__ ("inw %w1,%w0" : "=a" (Data) : "d" ((UINT16)Port));
Flag = FilterBeforeIoRead (FilterWidth16, Port, &Data);
if (Flag) {
__asm__ __volatile__ ("inw %w1,%w0" : "=a" (Data) : "d" ((UINT16)Port));
}
FilterAfterIoRead (FilterWidth16, Port, &Data);
return Data;
}
@@ -121,8 +141,17 @@ IoWrite16 (
IN UINT16 Value
)
{
BOOLEAN Flag;
ASSERT ((Port & 1) == 0);
__asm__ __volatile__ ("outw %w0,%w1" : : "a" (Value), "d" ((UINT16)Port));
Flag = FilterBeforeIoWrite (FilterWidth16, Port, &Value);
if (Flag) {
__asm__ __volatile__ ("outw %w0,%w1" : : "a" (Value), "d" ((UINT16)Port));
}
FilterAfterIoWrite (FilterWidth16, Port, &Value);
return Value;;
}
@@ -148,9 +177,16 @@ IoRead32 (
)
{
UINT32 Data;
BOOLEAN Flag;
ASSERT ((Port & 3) == 0);
__asm__ __volatile__ ("inl %w1,%0" : "=a" (Data) : "d" ((UINT16)Port));
Flag = FilterBeforeIoRead (FilterWidth32, Port, &Data);
if (Flag) {
__asm__ __volatile__ ("inl %w1,%0" : "=a" (Data) : "d" ((UINT16)Port));
}
FilterAfterIoRead (FilterWidth32, Port, &Data);
return Data;
}
@@ -177,8 +213,16 @@ IoWrite32 (
IN UINT32 Value
)
{
BOOLEAN Flag;
ASSERT ((Port & 3) == 0);
__asm__ __volatile__ ("outl %0,%w1" : : "a" (Value), "d" ((UINT16)Port));
Flag = FilterBeforeIoWrite (FilterWidth32, Port, &Value);
if (Flag) {
__asm__ __volatile__ ("outl %0,%w1" : : "a" (Value), "d" ((UINT16)Port));
}
FilterAfterIoWrite (FilterWidth32, Port, &Value);
return Value;
}