mirror of https://github.com/acidanthera/audk.git
MdePkg: Support IoFifo for Tdx guest in BaseIoLibIntrinsic
RFC: https://bugzilla.tianocore.org/show_bug.cgi?id=3429 Previously IoFifo functions are in X64/IoFifoSev.nasm which supports both SEV guest and Legacy guest. IoLibFifo.c is introduced to support SEV/TDX/Legacy guest in one binary. It checks the guest type in runtime and call corresponding functions then. 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
mergify[bot]
parent
b6b2de8848
commit
d74e932681
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@ -31,6 +31,7 @@
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BaseIoLibIntrinsicInternal.h
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IoHighLevel.c
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IoLibTdx.h
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IoLibSev.h
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[Sources.IA32]
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IoLibGcc.c | GCC
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@ -44,6 +45,7 @@
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IoLibMsc.c | MSFT
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IoLib.c
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IoLibInternalTdx.c
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IoLibFifo.c
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X64/IoFifoSev.nasm
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[Packages]
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@ -0,0 +1,217 @@
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/** @file
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IoFifo read/write routines.
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Copyright (c) 2021, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include "BaseIoLibIntrinsicInternal.h"
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#include "IoLibSev.h"
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#include "IoLibTdx.h"
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#include <Uefi/UefiBaseType.h>
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#include <Library/TdxLib.h>
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/**
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Reads an 8-bit I/O port fifo into a block of memory.
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Reads the 8-bit I/O fifo port specified by Port.
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The port is read Count times, and the read data is
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stored in the provided Buffer.
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This function must guarantee that all I/O read and write operations are
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serialized.
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If 8-bit I/O port operations are not supported, then ASSERT().
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In TDX a serial of TdIoRead8 is invoked to read the I/O port fifo.
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@param Port The I/O port to read.
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@param Count The number of times to read I/O port.
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@param Buffer The buffer to store the read data into.
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**/
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VOID
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EFIAPI
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IoReadFifo8 (
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IN UINTN Port,
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IN UINTN Count,
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OUT VOID *Buffer
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)
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{
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if (IsTdxGuest ()) {
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TdIoReadFifo8 (Port, Count, Buffer);
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} else {
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SevIoReadFifo8 (Port, Count, Buffer);
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}
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}
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/**
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Writes a block of memory into an 8-bit I/O port fifo.
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Writes the 8-bit I/O fifo port specified by Port.
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The port is written Count times, and the write data is
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retrieved from the provided Buffer.
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This function must guarantee that all I/O write and write operations are
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serialized.
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If 8-bit I/O port operations are not supported, then ASSERT().
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In TDX a serial of TdIoWrite8 is invoked to write data to the I/O port.
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@param Port The I/O port to write.
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@param Count The number of times to write I/O port.
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@param Buffer The buffer to retrieve the write data from.
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**/
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VOID
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EFIAPI
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IoWriteFifo8 (
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IN UINTN Port,
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IN UINTN Count,
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IN VOID *Buffer
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)
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{
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if (IsTdxGuest ()) {
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TdIoWriteFifo8 (Port, Count, Buffer);
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} else {
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SevIoWriteFifo8 (Port, Count, Buffer);
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}
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}
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/**
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Reads a 16-bit I/O port fifo into a block of memory.
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Reads the 16-bit I/O fifo port specified by Port.
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The port is read Count times, and the read data is
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stored in the provided Buffer.
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This function must guarantee that all I/O read and write operations are
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serialized.
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If 16-bit I/O port operations are not supported, then ASSERT().
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In TDX a serial of TdIoRead16 is invoked to read data from the I/O port.
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@param Port The I/O port to read.
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@param Count The number of times to read I/O port.
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@param Buffer The buffer to store the read data into.
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**/
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VOID
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EFIAPI
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IoReadFifo16 (
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IN UINTN Port,
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IN UINTN Count,
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OUT VOID *Buffer
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)
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{
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if (IsTdxGuest ()) {
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TdIoReadFifo16 (Port, Count, Buffer);
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} else {
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SevIoReadFifo16 (Port, Count, Buffer);
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}
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}
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/**
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Writes a block of memory into a 16-bit I/O port fifo.
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Writes the 16-bit I/O fifo port specified by Port.
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The port is written Count times, and the write data is
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retrieved from the provided Buffer.
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This function must guarantee that all I/O write and write operations are
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serialized.
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If 16-bit I/O port operations are not supported, then ASSERT().
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In TDX a serial of TdIoWrite16 is invoked to write data to the I/O port.
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@param Port The I/O port to write.
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@param Count The number of times to write I/O port.
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@param Buffer The buffer to retrieve the write data from.
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**/
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VOID
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EFIAPI
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IoWriteFifo16 (
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IN UINTN Port,
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IN UINTN Count,
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IN VOID *Buffer
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)
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{
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if (IsTdxGuest ()) {
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TdIoWriteFifo16 (Port, Count, Buffer);
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} else {
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SevIoWriteFifo16 (Port, Count, Buffer);
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}
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}
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/**
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Reads a 32-bit I/O port fifo into a block of memory.
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Reads the 32-bit I/O fifo port specified by Port.
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The port is read Count times, and the read data is
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stored in the provided Buffer.
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This function must guarantee that all I/O read and write operations are
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serialized.
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If 32-bit I/O port operations are not supported, then ASSERT().
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In TDX a serial of TdIoRead32 is invoked to read data from the I/O port.
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@param Port The I/O port to read.
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@param Count The number of times to read I/O port.
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@param Buffer The buffer to store the read data into.
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**/
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VOID
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EFIAPI
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IoReadFifo32 (
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IN UINTN Port,
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IN UINTN Count,
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OUT VOID *Buffer
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)
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{
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if (IsTdxGuest ()) {
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TdIoReadFifo32 (Port, Count, Buffer);
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} else {
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SevIoReadFifo32 (Port, Count, Buffer);
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}
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}
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/**
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Writes a block of memory into a 32-bit I/O port fifo.
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Writes the 32-bit I/O fifo port specified by Port.
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The port is written Count times, and the write data is
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retrieved from the provided Buffer.
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This function must guarantee that all I/O write and write operations are
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serialized.
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If 32-bit I/O port operations are not supported, then ASSERT().
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In TDX a serial of TdIoWrite32 is invoked to write data to the I/O port.
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@param Port The I/O port to write.
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@param Count The number of times to write I/O port.
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@param Buffer The buffer to retrieve the write data from.
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**/
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VOID
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EFIAPI
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IoWriteFifo32 (
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IN UINTN Port,
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IN UINTN Count,
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IN VOID *Buffer
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)
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{
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if (IsTdxGuest ()) {
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TdIoWriteFifo32 (Port, Count, Buffer);
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} else {
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SevIoWriteFifo32 (Port, Count, Buffer);
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}
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}
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@ -0,0 +1,166 @@
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/** @file
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Header file for SEV IO library.
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Copyright (c) 2021, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#ifndef IOLIB_SEV_H_
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#define IOLIB_SEV_H_
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#include <Base.h>
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#include <Library/BaseLib.h>
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#include <Library/DebugLib.h>
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/**
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Reads an 8-bit I/O port fifo into a block of memory.
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Reads the 8-bit I/O fifo port specified by Port.
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The port is read Count times, and the read data is
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stored in the provided Buffer.
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This function must guarantee that all I/O read and write operations are
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serialized.
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If 8-bit I/O port operations are not supported, then ASSERT().
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@param Port The I/O port to read.
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@param Count The number of times to read I/O port.
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@param Buffer The buffer to store the read data into.
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**/
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VOID
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EFIAPI
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SevIoReadFifo8 (
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IN UINTN Port,
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IN UINTN Count,
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OUT VOID *Buffer
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);
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/**
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Writes a block of memory into an 8-bit I/O port fifo.
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Writes the 8-bit I/O fifo port specified by Port.
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The port is written Count times, and the write data is
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retrieved from the provided Buffer.
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This function must guarantee that all I/O write and write operations are
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serialized.
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If 8-bit I/O port operations are not supported, then ASSERT().
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@param Port The I/O port to write.
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@param Count The number of times to write I/O port.
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@param Buffer The buffer to retrieve the write data from.
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**/
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VOID
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EFIAPI
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SevIoWriteFifo8 (
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IN UINTN Port,
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IN UINTN Count,
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IN VOID *Buffer
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);
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/**
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Reads an 8-bit I/O port fifo into a block of memory.
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Reads the 8-bit I/O fifo port specified by Port.
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The port is read Count times, and the read data is
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stored in the provided Buffer.
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This function must guarantee that all I/O read and write operations are
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serialized.
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If 8-bit I/O port operations are not supported, then ASSERT().
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@param Port The I/O port to read.
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@param Count The number of times to read I/O port.
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@param Buffer The buffer to store the read data into.
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**/
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VOID
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EFIAPI
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SevIoReadFifo16 (
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IN UINTN Port,
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IN UINTN Count,
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OUT VOID *Buffer
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);
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/**
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Writes a block of memory into an 8-bit I/O port fifo.
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Writes the 8-bit I/O fifo port specified by Port.
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The port is written Count times, and the write data is
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retrieved from the provided Buffer.
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This function must guarantee that all I/O write and write operations are
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serialized.
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If 8-bit I/O port operations are not supported, then ASSERT().
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@param Port The I/O port to write.
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@param Count The number of times to write I/O port.
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@param Buffer The buffer to retrieve the write data from.
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**/
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VOID
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EFIAPI
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SevIoWriteFifo16 (
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IN UINTN Port,
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IN UINTN Count,
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IN VOID *Buffer
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);
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/**
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Reads an 8-bit I/O port fifo into a block of memory.
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Reads the 8-bit I/O fifo port specified by Port.
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The port is read Count times, and the read data is
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stored in the provided Buffer.
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This function must guarantee that all I/O read and write operations are
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serialized.
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If 8-bit I/O port operations are not supported, then ASSERT().
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@param Port The I/O port to read.
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@param Count The number of times to read I/O port.
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@param Buffer The buffer to store the read data into.
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**/
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VOID
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EFIAPI
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SevIoReadFifo32 (
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IN UINTN Port,
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IN UINTN Count,
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OUT VOID *Buffer
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);
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/**
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Writes a block of memory into an 8-bit I/O port fifo.
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Writes the 8-bit I/O fifo port specified by Port.
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The port is written Count times, and the write data is
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retrieved from the provided Buffer.
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This function must guarantee that all I/O write and write operations are
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serialized.
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If 8-bit I/O port operations are not supported, then ASSERT().
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@param Port The I/O port to write.
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@param Count The number of times to write I/O port.
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@param Buffer The buffer to retrieve the write data from.
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**/
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VOID
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EFIAPI
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SevIoWriteFifo32 (
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IN UINTN Port,
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IN UINTN Count,
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IN VOID *Buffer
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);
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#endif
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@ -67,14 +67,14 @@ ASM_PFX(SevNoRepIo):
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;------------------------------------------------------------------------------
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; VOID
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; EFIAPI
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; IoReadFifo8 (
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; SevIoReadFifo8 (
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; IN UINTN Port, // rcx
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; IN UINTN Size, // rdx
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; OUT VOID *Buffer // r8
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; );
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;------------------------------------------------------------------------------
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global ASM_PFX(IoReadFifo8)
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ASM_PFX(IoReadFifo8):
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global ASM_PFX(SevIoReadFifo8)
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ASM_PFX(SevIoReadFifo8):
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xchg rcx, rdx
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xchg rdi, r8 ; rdi: buffer address; r8: save rdi
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@ -103,14 +103,14 @@ ASM_PFX(IoReadFifo8):
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;------------------------------------------------------------------------------
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; VOID
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; EFIAPI
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; IoReadFifo16 (
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; SevIoReadFifo16 (
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; IN UINTN Port, // rcx
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; IN UINTN Size, // rdx
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; OUT VOID *Buffer // r8
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; );
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;------------------------------------------------------------------------------
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global ASM_PFX(IoReadFifo16)
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ASM_PFX(IoReadFifo16):
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global ASM_PFX(SevIoReadFifo16)
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ASM_PFX(SevIoReadFifo16):
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xchg rcx, rdx
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xchg rdi, r8 ; rdi: buffer address; r8: save rdi
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@ -139,14 +139,14 @@ ASM_PFX(IoReadFifo16):
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;------------------------------------------------------------------------------
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; VOID
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; EFIAPI
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; IoReadFifo32 (
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; SevIoReadFifo32 (
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; IN UINTN Port, // rcx
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; IN UINTN Size, // rdx
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; OUT VOID *Buffer // r8
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; );
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;------------------------------------------------------------------------------
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global ASM_PFX(IoReadFifo32)
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ASM_PFX(IoReadFifo32):
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global ASM_PFX(SevIoReadFifo32)
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ASM_PFX(SevIoReadFifo32):
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xchg rcx, rdx
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xchg rdi, r8 ; rdi: buffer address; r8: save rdi
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|
|
@ -181,8 +181,8 @@ ASM_PFX(IoReadFifo32):
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; IN VOID *Buffer // r8
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; );
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;------------------------------------------------------------------------------
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global ASM_PFX(IoWriteFifo8)
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ASM_PFX(IoWriteFifo8):
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global ASM_PFX(SevIoWriteFifo8)
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ASM_PFX(SevIoWriteFifo8):
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xchg rcx, rdx
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xchg rsi, r8 ; rsi: buffer address; r8: save rsi
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|
|
@ -211,14 +211,14 @@ ASM_PFX(IoWriteFifo8):
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;------------------------------------------------------------------------------
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; VOID
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; EFIAPI
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; IoWriteFifo16 (
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; SevIoWriteFifo16 (
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; IN UINTN Port, // rcx
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; IN UINTN Size, // rdx
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; IN VOID *Buffer // r8
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; );
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;------------------------------------------------------------------------------
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global ASM_PFX(IoWriteFifo16)
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ASM_PFX(IoWriteFifo16):
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global ASM_PFX(SevIoWriteFifo16)
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ASM_PFX(SevIoWriteFifo16):
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xchg rcx, rdx
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xchg rsi, r8 ; rsi: buffer address; r8: save rsi
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|
|
@ -247,14 +247,14 @@ ASM_PFX(IoWriteFifo16):
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;------------------------------------------------------------------------------
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; VOID
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; EFIAPI
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; IoWriteFifo32 (
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; SevIoWriteFifo32 (
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; IN UINTN Port, // rcx
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; IN UINTN Size, // rdx
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; IN VOID *Buffer // r8
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; );
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;------------------------------------------------------------------------------
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global ASM_PFX(IoWriteFifo32)
|
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ASM_PFX(IoWriteFifo32):
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global ASM_PFX(SevIoWriteFifo32)
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ASM_PFX(SevIoWriteFifo32):
|
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xchg rcx, rdx
|
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xchg rsi, r8 ; rsi: buffer address; r8: save rsi
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue