From 1c11e7a2142b1406ccff5e0af0893c94472871c8 Mon Sep 17 00:00:00 2001 From: Dandan Bi Date: Mon, 8 Feb 2021 10:06:45 +0800 Subject: MdePkg: Add RegisterFilterLib class and NULL instance REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3246 1. Add a new library class (RegisterFilterLib) to filter and trace port IO/MMIO/MSR access. 2. Add a NULL instance (RegisterFilterLibNull) can be used to keep current behavior. Cc: Michael D Kinney Cc: Liming Gao Cc: Zhiguang Liu Signed-off-by: Dandan Bi Reviewed-by: Michael D Kinney Reviewed-by: Liming Gao Acked-by: Ard Biesheuvel Reviewed-by: Abner Chang --- .../RegisterFilterLibNull/RegisterFilterLibNull.c | 271 +++++++++++++++++++++ .../RegisterFilterLibNull.inf | 23 ++ .../RegisterFilterLibNull.uni | 13 + 3 files changed, 307 insertions(+) create mode 100644 MdePkg/Library/RegisterFilterLibNull/RegisterFilterLibNull.c create mode 100644 MdePkg/Library/RegisterFilterLibNull/RegisterFilterLibNull.inf create mode 100644 MdePkg/Library/RegisterFilterLibNull/RegisterFilterLibNull.uni (limited to 'MdePkg/Library') diff --git a/MdePkg/Library/RegisterFilterLibNull/RegisterFilterLibNull.c b/MdePkg/Library/RegisterFilterLibNull/RegisterFilterLibNull.c new file mode 100644 index 0000000000..7150f1ed5f --- /dev/null +++ b/MdePkg/Library/RegisterFilterLibNull/RegisterFilterLibNull.c @@ -0,0 +1,271 @@ +/** @file + Null instance of RegisterFilterLib. + + Copyright (c) 2021 Intel Corporation. All rights reserved.
+ + SPDX-License-Identifier: BSD-2-Clause-Patent + +**/ + +#include + +/** + Filter IO read operation before read IO port. + It is used to filter IO read operation. + + It will return the flag to decide whether require read real IO port. + It can be used for emulation environment. + + @param[in] Width Signifies the width of the I/O operation. + @param[in] Address The base address of the I/O operation. + @param[in,out] Buffer The destination buffer to store the results. + + @retval TRUE Need to excute the IO read. + @retval FALSE Skip the IO read. + +**/ +BOOLEAN +EFIAPI +FilterBeforeIoRead ( + IN FILTER_IO_WIDTH Width, + IN UINTN Address, + IN OUT VOID *Buffer + ) +{ + return TRUE; +} + +/** + Trace IO read operation after read IO port. + It is used to trace IO operation. + + @param[in] Width Signifies the width of the I/O operation. + @param[in] Address The base address of the I/O operation. + @param[in] Buffer The destination buffer to store the results. + +**/ +VOID +EFIAPI +FilterAfterIoRead ( + IN FILTER_IO_WIDTH Width, + IN UINTN Address, + IN VOID *Buffer + ) +{ + return; +} + +/** + Filter IO Write operation before wirte IO port. + It is used to filter IO operation. + + It will return the flag to decide whether require read write IO port. + It can be used for emulation environment. + + @param[in] Width Signifies the width of the I/O operation. + @param[in] Address The base address of the I/O operation. + @param[in] Buffer The source buffer from which to write data. + + @retval TRUE Need to excute the IO write. + @retval FALSE Skip the IO write. + +**/ +BOOLEAN +EFIAPI +FilterBeforeIoWrite ( + IN FILTER_IO_WIDTH Width, + IN UINTN Address, + IN VOID *Buffer + ) +{ + return TRUE; +} + + /** + Trace IO Write operation after wirte IO port. + It is used to trace IO operation. + + @param[in] Width Signifies the width of the I/O operation. + @param[in] Address The base address of the I/O operation. + @param[in] Buffer The source buffer from which to Write data. + +**/ +VOID +EFIAPI +FilterAfterIoWrite ( + IN FILTER_IO_WIDTH Width, + IN UINTN Address, + IN VOID *Buffer + ) +{ + return; +} + +/** + Filter memory IO before Read operation. + + It will return the flag to decide whether require read real MMIO. + It can be used for emulation environment. + + @param[in] Width Signifies the width of the memory I/O operation. + @param[in] Address The base address of the memory I/O operation. + @param[in,out] Buffer The destination buffer to store the results. + + @retval TRUE Need to excute the MMIO read. + @retval FALSE Skip the MMIO read. + +**/ +BOOLEAN +EFIAPI +FilterBeforeMmIoRead ( + IN FILTER_IO_WIDTH Width, + IN UINTN Address, + IN OUT VOID *Buffer + ) +{ + return TRUE; +} + +/** + Tracer memory IO after read operation. + + @param[in] Width Signifies the width of the memory I/O operation. + @param[in] Address The base address of the memory I/O operation. + @param[in] Buffer The destination buffer to store the results. + +**/ +VOID +EFIAPI +FilterAfterMmIoRead ( + IN FILTER_IO_WIDTH Width, + IN UINTN Address, + IN VOID *Buffer + ) +{ + return; +} + +/** + Filter memory IO before write operation. + + It will return the flag to decide whether require wirte real MMIO. + It can be used for emulation environment. + + @param[in] Width Signifies the width of the memory I/O operation. + @param[in] Address The base address of the memory I/O operation. + @param[in] Buffer The source buffer from which to write data. + + @retval TRUE Need to excute the MMIO write. + @retval FALSE Skip the MMIO write. + +**/ +BOOLEAN +EFIAPI +FilterBeforeMmIoWrite ( + IN FILTER_IO_WIDTH Width, + IN UINTN Address, + IN VOID *Buffer + ) +{ + return TRUE; +} + +/** + Tracer memory IO after write operation. + + @param[in] Width Signifies the width of the memory I/O operation. + @param[in] Address The base address of the memory I/O operation. + @param[in] Buffer The source buffer from which to write data. + +**/ +VOID +EFIAPI +FilterAfterMmIoWrite ( + IN FILTER_IO_WIDTH Width, + IN UINTN Address, + IN VOID *Buffer + ) +{ + return; +} + +/** + Filter MSR before read operation. + + It will return the flag to decide whether require read real MSR. + It can be used for emulation environment. + + @param Index The Register index of the MSR. + @param Value Point to the data will be read from the MSR. + + @retval TRUE Need to excute the MSR read. + @retval FALSE Skip the MSR read. + +**/ +BOOLEAN +EFIAPI +FilterBeforeMsrRead ( + IN UINT32 Index, + IN OUT UINT64 *Value + ) +{ + return TRUE; +} + +/** + Trace MSR after read operation. + + @param Index The Register index of the MSR. + @param Value Point to the data has been be read from the MSR. + +**/ +VOID +EFIAPI +FilterAfterMsrRead ( + IN UINT32 Index, + IN UINT64 *Value + ) +{ + return; +} + +/** + Filter MSR before write operation. + + It will return the flag to decide whether require write real MSR. + It can be used for emulation environment. + + @param Index The Register index of the MSR. + @param Value Point to the data want to be written to the MSR. + + @retval TRUE Need to excute the MSR write. + @retval FALSE Skip the MSR write. + +**/ +BOOLEAN +EFIAPI +FilterBeforeMsrWrite ( + IN UINT32 Index, + IN UINT64 *Value + ) +{ + return TRUE; +} + +/** + Trace MSR after write operation. + + @param Index The Register index of the MSR. + @param Value Point to the data has been be written to the MSR. + +**/ +VOID +EFIAPI +FilterAfterMsrWrite ( + IN UINT32 Index, + IN UINT64 *Value + ) +{ + return; +} + diff --git a/MdePkg/Library/RegisterFilterLibNull/RegisterFilterLibNull.inf b/MdePkg/Library/RegisterFilterLibNull/RegisterFilterLibNull.inf new file mode 100644 index 0000000000..a7fc7497ed --- /dev/null +++ b/MdePkg/Library/RegisterFilterLibNull/RegisterFilterLibNull.inf @@ -0,0 +1,23 @@ +## @file +# Null instance of RegisterFilterLib. +# +# Copyright (c) 2021, Intel Corporation. All rights reserved.
+# +# SPDX-License-Identifier: BSD-2-Clause-Patent +# +## + +[Defines] + INF_VERSION = 0x00010005 + BASE_NAME = FilterLibNull + MODULE_UNI_FILE = FilterLibNull.uni + FILE_GUID = 9F555194-A410-4AD6-B3FC-53F6E10FA793 + MODULE_TYPE = BASE + VERSION_STRING = 1.0 + LIBRARY_CLASS = RegisterFilterLib + +[Sources] + RegisterFilterLibNull.c + +[Packages] + MdePkg/MdePkg.dec diff --git a/MdePkg/Library/RegisterFilterLibNull/RegisterFilterLibNull.uni b/MdePkg/Library/RegisterFilterLibNull/RegisterFilterLibNull.uni new file mode 100644 index 0000000000..ed64c7e63d --- /dev/null +++ b/MdePkg/Library/RegisterFilterLibNull/RegisterFilterLibNull.uni @@ -0,0 +1,13 @@ +// /** @file +// Null instance of RegisterFilterLib. +// +// Copyright (c) 2021, Intel Corporation. All rights reserved.
+// +// SPDX-License-Identifier: BSD-2-Clause-Patent +// +// **/ + + +#string STR_MODULE_ABSTRACT #language en-US "Null instance of RegisterFilterLib." +#string STR_MODULE_DESCRIPTION #language en-US "Null instance of RegisterFilterLib." + -- cgit v1.2.3