From d74e93268185273b2a91ff8577659bafeac4341c Mon Sep 17 00:00:00 2001 From: Min Xu Date: Fri, 22 Oct 2021 14:01:36 +0800 Subject: 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 Cc: Liming Gao Cc: Zhiguang Liu Cc: Brijesh Singh Cc: Erdem Aktas Cc: James Bottomley Cc: Jiewen Yao Cc: Tom Lendacky Cc: Gerd Hoffmann Acked-by: Gerd Hoffmann Reviewed-by: Liming Gao Reviewed-by: Jiewen Yao Signed-off-by: Min Xu --- .../BaseIoLibIntrinsic/BaseIoLibIntrinsicSev.inf | 2 + MdePkg/Library/BaseIoLibIntrinsic/IoLibFifo.c | 217 +++++++++++++++++++++ MdePkg/Library/BaseIoLibIntrinsic/IoLibSev.h | 166 ++++++++++++++++ .../Library/BaseIoLibIntrinsic/X64/IoFifoSev.nasm | 34 ++-- 4 files changed, 402 insertions(+), 17 deletions(-) create mode 100644 MdePkg/Library/BaseIoLibIntrinsic/IoLibFifo.c create mode 100644 MdePkg/Library/BaseIoLibIntrinsic/IoLibSev.h (limited to 'MdePkg') diff --git a/MdePkg/Library/BaseIoLibIntrinsic/BaseIoLibIntrinsicSev.inf b/MdePkg/Library/BaseIoLibIntrinsic/BaseIoLibIntrinsicSev.inf index a74e54bee8..7fe1c60f04 100644 --- a/MdePkg/Library/BaseIoLibIntrinsic/BaseIoLibIntrinsicSev.inf +++ b/MdePkg/Library/BaseIoLibIntrinsic/BaseIoLibIntrinsicSev.inf @@ -31,6 +31,7 @@ BaseIoLibIntrinsicInternal.h IoHighLevel.c IoLibTdx.h + IoLibSev.h [Sources.IA32] IoLibGcc.c | GCC @@ -44,6 +45,7 @@ IoLibMsc.c | MSFT IoLib.c IoLibInternalTdx.c + IoLibFifo.c X64/IoFifoSev.nasm [Packages] diff --git a/MdePkg/Library/BaseIoLibIntrinsic/IoLibFifo.c b/MdePkg/Library/BaseIoLibIntrinsic/IoLibFifo.c new file mode 100644 index 0000000000..9a94bc6a05 --- /dev/null +++ b/MdePkg/Library/BaseIoLibIntrinsic/IoLibFifo.c @@ -0,0 +1,217 @@ +/** @file + IoFifo read/write routines. + + Copyright (c) 2021, Intel Corporation. All rights reserved.
+ SPDX-License-Identifier: BSD-2-Clause-Patent + +**/ + +#include "BaseIoLibIntrinsicInternal.h" +#include "IoLibSev.h" +#include "IoLibTdx.h" +#include +#include + +/** + Reads an 8-bit I/O port fifo into a block of memory. + + Reads the 8-bit I/O fifo port specified by Port. + The port is read Count times, and the read data is + stored in the provided Buffer. + + 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(). + + In TDX a serial of TdIoRead8 is invoked to read the I/O port fifo. + + @param Port The I/O port to read. + @param Count The number of times to read I/O port. + @param Buffer The buffer to store the read data into. + +**/ +VOID +EFIAPI +IoReadFifo8 ( + IN UINTN Port, + IN UINTN Count, + OUT VOID *Buffer + ) +{ + if (IsTdxGuest ()) { + TdIoReadFifo8 (Port, Count, Buffer); + } else { + SevIoReadFifo8 (Port, Count, Buffer); + } +} + +/** + Writes a block of memory into an 8-bit I/O port fifo. + + Writes the 8-bit I/O fifo port specified by Port. + The port is written Count times, and the write data is + retrieved from the provided Buffer. + + This function must guarantee that all I/O write and write operations are + serialized. + + If 8-bit I/O port operations are not supported, then ASSERT(). + + In TDX a serial of TdIoWrite8 is invoked to write data to the I/O port. + + @param Port The I/O port to write. + @param Count The number of times to write I/O port. + @param Buffer The buffer to retrieve the write data from. + +**/ +VOID +EFIAPI +IoWriteFifo8 ( + IN UINTN Port, + IN UINTN Count, + IN VOID *Buffer + ) +{ + if (IsTdxGuest ()) { + TdIoWriteFifo8 (Port, Count, Buffer); + } else { + SevIoWriteFifo8 (Port, Count, Buffer); + } +} + +/** + Reads a 16-bit I/O port fifo into a block of memory. + + Reads the 16-bit I/O fifo port specified by Port. + The port is read Count times, and the read data is + stored in the provided Buffer. + + This function must guarantee that all I/O read and write operations are + serialized. + + If 16-bit I/O port operations are not supported, then ASSERT(). + + In TDX a serial of TdIoRead16 is invoked to read data from the I/O port. + + @param Port The I/O port to read. + @param Count The number of times to read I/O port. + @param Buffer The buffer to store the read data into. + +**/ +VOID +EFIAPI +IoReadFifo16 ( + IN UINTN Port, + IN UINTN Count, + OUT VOID *Buffer + ) +{ + if (IsTdxGuest ()) { + TdIoReadFifo16 (Port, Count, Buffer); + } else { + SevIoReadFifo16 (Port, Count, Buffer); + } +} + +/** + Writes a block of memory into a 16-bit I/O port fifo. + + Writes the 16-bit I/O fifo port specified by Port. + The port is written Count times, and the write data is + retrieved from the provided Buffer. + + This function must guarantee that all I/O write and write operations are + serialized. + + If 16-bit I/O port operations are not supported, then ASSERT(). + + In TDX a serial of TdIoWrite16 is invoked to write data to the I/O port. + + @param Port The I/O port to write. + @param Count The number of times to write I/O port. + @param Buffer The buffer to retrieve the write data from. + +**/ +VOID +EFIAPI +IoWriteFifo16 ( + IN UINTN Port, + IN UINTN Count, + IN VOID *Buffer + ) +{ + if (IsTdxGuest ()) { + TdIoWriteFifo16 (Port, Count, Buffer); + } else { + SevIoWriteFifo16 (Port, Count, Buffer); + } +} + +/** + Reads a 32-bit I/O port fifo into a block of memory. + + Reads the 32-bit I/O fifo port specified by Port. + The port is read Count times, and the read data is + stored in the provided Buffer. + + This function must guarantee that all I/O read and write operations are + serialized. + + If 32-bit I/O port operations are not supported, then ASSERT(). + + In TDX a serial of TdIoRead32 is invoked to read data from the I/O port. + + @param Port The I/O port to read. + @param Count The number of times to read I/O port. + @param Buffer The buffer to store the read data into. + +**/ +VOID +EFIAPI +IoReadFifo32 ( + IN UINTN Port, + IN UINTN Count, + OUT VOID *Buffer + ) +{ + if (IsTdxGuest ()) { + TdIoReadFifo32 (Port, Count, Buffer); + } else { + SevIoReadFifo32 (Port, Count, Buffer); + } +} + +/** + Writes a block of memory into a 32-bit I/O port fifo. + + Writes the 32-bit I/O fifo port specified by Port. + The port is written Count times, and the write data is + retrieved from the provided Buffer. + + This function must guarantee that all I/O write and write operations are + serialized. + + If 32-bit I/O port operations are not supported, then ASSERT(). + + In TDX a serial of TdIoWrite32 is invoked to write data to the I/O port. + + @param Port The I/O port to write. + @param Count The number of times to write I/O port. + @param Buffer The buffer to retrieve the write data from. + +**/ +VOID +EFIAPI +IoWriteFifo32 ( + IN UINTN Port, + IN UINTN Count, + IN VOID *Buffer + ) +{ + if (IsTdxGuest ()) { + TdIoWriteFifo32 (Port, Count, Buffer); + } else { + SevIoWriteFifo32 (Port, Count, Buffer); + } +} diff --git a/MdePkg/Library/BaseIoLibIntrinsic/IoLibSev.h b/MdePkg/Library/BaseIoLibIntrinsic/IoLibSev.h new file mode 100644 index 0000000000..6d7cafcff2 --- /dev/null +++ b/MdePkg/Library/BaseIoLibIntrinsic/IoLibSev.h @@ -0,0 +1,166 @@ +/** @file + Header file for SEV IO library. + + Copyright (c) 2021, Intel Corporation. All rights reserved.
+ SPDX-License-Identifier: BSD-2-Clause-Patent +**/ + +#ifndef IOLIB_SEV_H_ +#define IOLIB_SEV_H_ + +#include + +#include +#include + +/** + Reads an 8-bit I/O port fifo into a block of memory. + + Reads the 8-bit I/O fifo port specified by Port. + The port is read Count times, and the read data is + stored in the provided Buffer. + + 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(). + + @param Port The I/O port to read. + @param Count The number of times to read I/O port. + @param Buffer The buffer to store the read data into. + +**/ +VOID +EFIAPI +SevIoReadFifo8 ( + IN UINTN Port, + IN UINTN Count, + OUT VOID *Buffer + ); + +/** + Writes a block of memory into an 8-bit I/O port fifo. + + Writes the 8-bit I/O fifo port specified by Port. + The port is written Count times, and the write data is + retrieved from the provided Buffer. + + This function must guarantee that all I/O write and write operations are + serialized. + + If 8-bit I/O port operations are not supported, then ASSERT(). + + @param Port The I/O port to write. + @param Count The number of times to write I/O port. + @param Buffer The buffer to retrieve the write data from. + +**/ +VOID +EFIAPI +SevIoWriteFifo8 ( + IN UINTN Port, + IN UINTN Count, + IN VOID *Buffer + ); + +/** + Reads an 8-bit I/O port fifo into a block of memory. + + Reads the 8-bit I/O fifo port specified by Port. + The port is read Count times, and the read data is + stored in the provided Buffer. + + 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(). + + @param Port The I/O port to read. + @param Count The number of times to read I/O port. + @param Buffer The buffer to store the read data into. + +**/ +VOID +EFIAPI +SevIoReadFifo16 ( + IN UINTN Port, + IN UINTN Count, + OUT VOID *Buffer + ); + +/** + Writes a block of memory into an 8-bit I/O port fifo. + + Writes the 8-bit I/O fifo port specified by Port. + The port is written Count times, and the write data is + retrieved from the provided Buffer. + + This function must guarantee that all I/O write and write operations are + serialized. + + If 8-bit I/O port operations are not supported, then ASSERT(). + + @param Port The I/O port to write. + @param Count The number of times to write I/O port. + @param Buffer The buffer to retrieve the write data from. + +**/ +VOID +EFIAPI +SevIoWriteFifo16 ( + IN UINTN Port, + IN UINTN Count, + IN VOID *Buffer + ); + +/** + Reads an 8-bit I/O port fifo into a block of memory. + + Reads the 8-bit I/O fifo port specified by Port. + The port is read Count times, and the read data is + stored in the provided Buffer. + + 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(). + + @param Port The I/O port to read. + @param Count The number of times to read I/O port. + @param Buffer The buffer to store the read data into. + +**/ +VOID +EFIAPI +SevIoReadFifo32 ( + IN UINTN Port, + IN UINTN Count, + OUT VOID *Buffer + ); + +/** + Writes a block of memory into an 8-bit I/O port fifo. + + Writes the 8-bit I/O fifo port specified by Port. + The port is written Count times, and the write data is + retrieved from the provided Buffer. + + This function must guarantee that all I/O write and write operations are + serialized. + + If 8-bit I/O port operations are not supported, then ASSERT(). + + @param Port The I/O port to write. + @param Count The number of times to write I/O port. + @param Buffer The buffer to retrieve the write data from. + +**/ +VOID +EFIAPI +SevIoWriteFifo32 ( + IN UINTN Port, + IN UINTN Count, + IN VOID *Buffer + ); + +#endif diff --git a/MdePkg/Library/BaseIoLibIntrinsic/X64/IoFifoSev.nasm b/MdePkg/Library/BaseIoLibIntrinsic/X64/IoFifoSev.nasm index 106f8881c5..d02286b4d5 100644 --- a/MdePkg/Library/BaseIoLibIntrinsic/X64/IoFifoSev.nasm +++ b/MdePkg/Library/BaseIoLibIntrinsic/X64/IoFifoSev.nasm @@ -67,14 +67,14 @@ ASM_PFX(SevNoRepIo): ;------------------------------------------------------------------------------ ; VOID ; EFIAPI -; IoReadFifo8 ( +; SevIoReadFifo8 ( ; IN UINTN Port, // rcx ; IN UINTN Size, // rdx ; OUT VOID *Buffer // r8 ; ); ;------------------------------------------------------------------------------ -global ASM_PFX(IoReadFifo8) -ASM_PFX(IoReadFifo8): +global ASM_PFX(SevIoReadFifo8) +ASM_PFX(SevIoReadFifo8): xchg rcx, rdx xchg rdi, r8 ; rdi: buffer address; r8: save rdi @@ -103,14 +103,14 @@ ASM_PFX(IoReadFifo8): ;------------------------------------------------------------------------------ ; VOID ; EFIAPI -; IoReadFifo16 ( +; SevIoReadFifo16 ( ; IN UINTN Port, // rcx ; IN UINTN Size, // rdx ; OUT VOID *Buffer // r8 ; ); ;------------------------------------------------------------------------------ -global ASM_PFX(IoReadFifo16) -ASM_PFX(IoReadFifo16): +global ASM_PFX(SevIoReadFifo16) +ASM_PFX(SevIoReadFifo16): xchg rcx, rdx xchg rdi, r8 ; rdi: buffer address; r8: save rdi @@ -139,14 +139,14 @@ ASM_PFX(IoReadFifo16): ;------------------------------------------------------------------------------ ; VOID ; EFIAPI -; IoReadFifo32 ( +; SevIoReadFifo32 ( ; IN UINTN Port, // rcx ; IN UINTN Size, // rdx ; OUT VOID *Buffer // r8 ; ); ;------------------------------------------------------------------------------ -global ASM_PFX(IoReadFifo32) -ASM_PFX(IoReadFifo32): +global ASM_PFX(SevIoReadFifo32) +ASM_PFX(SevIoReadFifo32): xchg rcx, rdx xchg rdi, r8 ; rdi: buffer address; r8: save rdi @@ -181,8 +181,8 @@ ASM_PFX(IoReadFifo32): ; IN VOID *Buffer // r8 ; ); ;------------------------------------------------------------------------------ -global ASM_PFX(IoWriteFifo8) -ASM_PFX(IoWriteFifo8): +global ASM_PFX(SevIoWriteFifo8) +ASM_PFX(SevIoWriteFifo8): xchg rcx, rdx xchg rsi, r8 ; rsi: buffer address; r8: save rsi @@ -211,14 +211,14 @@ ASM_PFX(IoWriteFifo8): ;------------------------------------------------------------------------------ ; VOID ; EFIAPI -; IoWriteFifo16 ( +; SevIoWriteFifo16 ( ; IN UINTN Port, // rcx ; IN UINTN Size, // rdx ; IN VOID *Buffer // r8 ; ); ;------------------------------------------------------------------------------ -global ASM_PFX(IoWriteFifo16) -ASM_PFX(IoWriteFifo16): +global ASM_PFX(SevIoWriteFifo16) +ASM_PFX(SevIoWriteFifo16): xchg rcx, rdx xchg rsi, r8 ; rsi: buffer address; r8: save rsi @@ -247,14 +247,14 @@ ASM_PFX(IoWriteFifo16): ;------------------------------------------------------------------------------ ; VOID ; EFIAPI -; IoWriteFifo32 ( +; SevIoWriteFifo32 ( ; IN UINTN Port, // rcx ; IN UINTN Size, // rdx ; IN VOID *Buffer // r8 ; ); ;------------------------------------------------------------------------------ -global ASM_PFX(IoWriteFifo32) -ASM_PFX(IoWriteFifo32): +global ASM_PFX(SevIoWriteFifo32) +ASM_PFX(SevIoWriteFifo32): xchg rcx, rdx xchg rsi, r8 ; rsi: buffer address; r8: save rsi -- cgit v1.2.3