tyler.durden
/
audk
mirror of https://github.com/acidanthera/audk.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

MdePkg: Support IoRead/IoWrite for Tdx guest in BaseIoLibIntrinsic 

RFC: https://bugzilla.tianocore.org/show_bug.cgi?id=3429

This commit supports IoRead/IoWrite for SEV/TDX/Legacy guest in one
binary. It checks the guest type in runtime and then call corresponding
functions.

Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Cc: Zhiguang Liu <zhiguang.liu@intel.com>
Cc: Brijesh Singh <brijesh.singh@amd.com>
Cc: Erdem Aktas <erdemaktas@google.com>
Cc: James Bottomley <jejb@linux.ibm.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Liming Gao <gaoliming@byosoft.com.cn>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
Signed-off-by: Min Xu <min.m.xu@intel.com>
This commit is contained in:
Min Xu 2021-10-22 14:03:23 +08:00 committed by mergify[bot]
parent d74e932681
commit 3571fc906f
2 changed files with 99 additions and 25 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

51
MdePkg/Library/BaseIoLibIntrinsic/IoLibGcc.c
View File

@ -16,6 +16,7 @@
**/
#include "BaseIoLibIntrinsicInternal.h"
#include "IoLibTdx.h"
/**
Reads an 8-bit I/O port.
@ -24,7 +25,9 @@
This function must guarantee that all I/O read and write operations are
serialized.
If 8-bit I/O port operations are not supported, then ASSERT().
If 8-bit I/O port operations are not supported, then ASSERT()
For Td guest TDVMCALL_IO is invoked to read I/O port.
@param Port The I/O port to read.
@ -42,7 +45,11 @@ IoRead8 (
Flag = FilterBeforeIoRead (FilterWidth8, Port, &Data);
if (Flag) {
__asm__ __volatile__ ("inb %w1,%b0" : "=a" (Data) : "d" ((UINT16)Port));
if (IsTdxGuest ()) {
Data = TdIoRead8 (Port);
} else {
__asm__ __volatile__ ("inb %w1,%b0" : "=a" (Data) : "d" ((UINT16)Port));
}
}
FilterAfterIoRead (FilterWidth8, Port, &Data);
@ -59,6 +66,8 @@ IoRead8 (
If 8-bit I/O port operations are not supported, then ASSERT().
For Td guest TDVMCALL_IO is invoked to write I/O port.
@param Port The I/O port to write.
@param Value The value to write to the I/O port.
@ -76,7 +85,11 @@ IoWrite8 (
Flag = FilterBeforeIoWrite (FilterWidth8, Port, &Value);
if (Flag) {
__asm__ __volatile__ ("outb %b0,%w1" : : "a" (Value), "d" ((UINT16)Port));
if (IsTdxGuest ()) {
TdIoWrite8 (Port, Value);
} else {
__asm__ __volatile__ ("outb %b0,%w1" : : "a" (Value), "d" ((UINT16)Port));
}
}
FilterAfterIoWrite (FilterWidth8, Port, &Value);
@ -94,6 +107,8 @@ IoWrite8 (
If 16-bit I/O port operations are not supported, then ASSERT().
If Port is not aligned on a 16-bit boundary, then ASSERT().
For Td guest TDVMCALL_IO is invoked to read I/O port.
@param Port The I/O port to read.
@return The value read.
@ -112,7 +127,11 @@ IoRead16 (
Flag = FilterBeforeIoRead (FilterWidth16, Port, &Data);
if (Flag) {
__asm__ __volatile__ ("inw %w1,%w0" : "=a" (Data) : "d" ((UINT16)Port));
if (IsTdxGuest ()) {
Data = TdIoRead16 (Port);
} else {
__asm__ __volatile__ ("inw %w1,%w0" : "=a" (Data) : "d" ((UINT16)Port));
}
}
FilterAfterIoRead (FilterWidth16, Port, &Data);
@ -130,6 +149,8 @@ IoRead16 (
If 16-bit I/O port operations are not supported, then ASSERT().
If Port is not aligned on a 16-bit boundary, then ASSERT().
For Td guest TDVMCALL_IO is invoked to write I/O port.
@param Port The I/O port to write.
@param Value The value to write to the I/O port.
@ -149,7 +170,11 @@ IoWrite16 (
Flag = FilterBeforeIoWrite (FilterWidth16, Port, &Value);
if (Flag) {
__asm__ __volatile__ ("outw %w0,%w1" : : "a" (Value), "d" ((UINT16)Port));
if (IsTdxGuest ()) {
TdIoWrite16 (Port, Value);
} else {
__asm__ __volatile__ ("outw %w0,%w1" : : "a" (Value), "d" ((UINT16)Port));
}
}
FilterAfterIoWrite (FilterWidth16, Port, &Value);
@ -167,6 +192,8 @@ IoWrite16 (
If 32-bit I/O port operations are not supported, then ASSERT().
If Port is not aligned on a 32-bit boundary, then ASSERT().
For Td guest TDVMCALL_IO is invoked to read I/O port.
@param Port The I/O port to read.
@return The value read.
@ -185,7 +212,11 @@ IoRead32 (
Flag = FilterBeforeIoRead (FilterWidth32, Port, &Data);
if (Flag) {
__asm__ __volatile__ ("inl %w1,%0" : "=a" (Data) : "d" ((UINT16)Port));
if (IsTdxGuest ()) {
Data = TdIoRead32 (Port);
} else {
__asm__ __volatile__ ("inl %w1,%0" : "=a" (Data) : "d" ((UINT16)Port));
}
}
FilterAfterIoRead (FilterWidth32, Port, &Data);
@ -203,6 +234,8 @@ IoRead32 (
If 32-bit I/O port operations are not supported, then ASSERT().
If Port is not aligned on a 32-bit boundary, then ASSERT().
For Td guest TDVMCALL_IO is invoked to write I/O port.
@param Port The I/O port to write.
@param Value The value to write to the I/O port.
@ -222,7 +255,11 @@ IoWrite32 (
Flag = FilterBeforeIoWrite (FilterWidth32, Port, &Value);
if (Flag) {
__asm__ __volatile__ ("outl %0,%w1" : : "a" (Value), "d" ((UINT16)Port));
if (IsTdxGuest ()) {
TdIoWrite32 (Port, Value);
} else {
__asm__ __volatile__ ("outl %0,%w1" : : "a" (Value), "d" ((UINT16)Port));
}
}
FilterAfterIoWrite (FilterWidth32, Port, &Value);

73
MdePkg/Library/BaseIoLibIntrinsic/IoLibMsc.c
View File

@ -14,6 +14,7 @@
**/
#include "BaseIoLibIntrinsicInternal.h"
#include "IoLibTdx.h"
//
// Microsoft Visual Studio 7.1 Function Prototypes for I/O Intrinsics.
@ -82,6 +83,8 @@ _ReadWriteBarrier (
If 8-bit I/O port operations are not supported, then ASSERT().
For Td guest TDVMCALL_IO is invoked to read I/O port.
@param Port The I/O port to read.
@return The value read.
@ -98,9 +101,13 @@ IoRead8 (
Flag = FilterBeforeIoRead (FilterWidth8, Port, &Value);
if (Flag) {
_ReadWriteBarrier ();
Value = (UINT8)_inp ((UINT16)Port);
_ReadWriteBarrier ();
if (IsTdxGuest ()) {
Value = TdIoRead8 (Port);
} else {
_ReadWriteBarrier ();
Value = (UINT8)_inp ((UINT16)Port);
_ReadWriteBarrier ();
}
}
FilterAfterIoRead (FilterWidth8, Port, &Value);
@ -117,6 +124,8 @@ IoRead8 (
If 8-bit I/O port operations are not supported, then ASSERT().
For Td guest TDVMCALL_IO is invoked to write I/O port.
@param Port The I/O port to write.
@param Value The value to write to the I/O port.
@ -134,9 +143,13 @@ IoWrite8 (
Flag = FilterBeforeIoWrite (FilterWidth8, Port, &Value);
if (Flag) {
_ReadWriteBarrier ();
(UINT8)_outp ((UINT16)Port, Value);
_ReadWriteBarrier ();
if (IsTdxGuest ()) {
TdIoWrite8 (Port, Value);
} else {
_ReadWriteBarrier ();
(UINT8)_outp ((UINT16)Port, Value);
_ReadWriteBarrier ();
}
}
FilterAfterIoWrite (FilterWidth8, Port, &Value);
@ -154,6 +167,8 @@ IoWrite8 (
If 16-bit I/O port operations are not supported, then ASSERT().
If Port is not aligned on a 16-bit boundary, then ASSERT().
For Td guest TDVMCALL_IO is invoked to read I/O port.
@param Port The I/O port to read.
@return The value read.
@ -172,9 +187,13 @@ IoRead16 (
Flag = FilterBeforeIoRead (FilterWidth16, Port, &Value);
if (Flag) {
_ReadWriteBarrier ();
Value = _inpw ((UINT16)Port);
_ReadWriteBarrier ();
if (IsTdxGuest ()) {
Value = TdIoRead16 (Port);
} else {
_ReadWriteBarrier ();
Value = _inpw ((UINT16)Port);
_ReadWriteBarrier ();
}
}
FilterBeforeIoRead (FilterWidth16, Port, &Value);
@ -192,6 +211,8 @@ IoRead16 (
If 16-bit I/O port operations are not supported, then ASSERT().
If Port is not aligned on a 16-bit boundary, then ASSERT().
For Td guest TDVMCALL_IO is invoked to write I/O port.
@param Port The I/O port to write.
@param Value The value to write to the I/O port.
@ -211,9 +232,13 @@ IoWrite16 (
Flag = FilterBeforeIoWrite (FilterWidth16, Port, &Value);
if (Flag) {
_ReadWriteBarrier ();
_outpw ((UINT16)Port, Value);
_ReadWriteBarrier ();
if (IsTdxGuest ()) {
TdIoWrite16 (Port, Value);
} else {
_ReadWriteBarrier ();
_outpw ((UINT16)Port, Value);
_ReadWriteBarrier ();
}
}
FilterAfterIoWrite (FilterWidth16, Port, &Value);
@ -231,6 +256,8 @@ IoWrite16 (
If 32-bit I/O port operations are not supported, then ASSERT().
If Port is not aligned on a 32-bit boundary, then ASSERT().
For Td guest TDVMCALL_IO is invoked to read I/O port.
@param Port The I/O port to read.
@return The value read.
@ -249,9 +276,13 @@ IoRead32 (
Flag = FilterBeforeIoRead (FilterWidth32, Port, &Value);
if (Flag) {
_ReadWriteBarrier ();
Value = _inpd ((UINT16)Port);
_ReadWriteBarrier ();
if (IsTdxGuest ()) {
Value = TdIoRead32 (Port);
} else {
_ReadWriteBarrier ();
Value = _inpd ((UINT16)Port);
_ReadWriteBarrier ();
}
}
FilterAfterIoRead (FilterWidth32, Port, &Value);
@ -269,6 +300,8 @@ IoRead32 (
If 32-bit I/O port operations are not supported, then ASSERT().
If Port is not aligned on a 32-bit boundary, then ASSERT().
For Td guest TDVMCALL_IO is invoked to write I/O port.
@param Port The I/O port to write.
@param Value The value to write to the I/O port.
@ -288,9 +321,13 @@ IoWrite32 (
Flag = FilterBeforeIoWrite (FilterWidth32, Port, &Value);
if (Flag) {
_ReadWriteBarrier ();
_outpd ((UINT16)Port, Value);
_ReadWriteBarrier ();
if (IsTdxGuest ()) {
TdIoWrite32 (Port, Value);
} else {
_ReadWriteBarrier ();
_outpd ((UINT16)Port, Value);
_ReadWriteBarrier ();
}
}
FilterAfterIoWrite (FilterWidth32, Port, &Value);