This SmmIoLib is used to check if an IO resource is valid in SMM. Cc: Jeff Fan <jeff....@intel.com> Cc: Liming Gao <liming....@intel.com> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Jiewen Yao <jiewen....@intel.com> --- MdePkg/Include/Library/SmmIoLib.h | 42 ++++++++++++++++++++ 1 file changed, 42 insertions(+)
diff --git a/MdePkg/Include/Library/SmmIoLib.h b/MdePkg/Include/Library/SmmIoLib.h new file mode 100644 index 0000000..7820f1e --- /dev/null +++ b/MdePkg/Include/Library/SmmIoLib.h @@ -0,0 +1,42 @@ +/** @file + Provides services for SMM IO Operation. + + The SMM IO Library provides function for checking if IO resource is accessible inside of SMM. + + Copyright (c) 2017, Intel Corporation. All rights reserved.<BR> + This program and the accompanying materials + are licensed and made available under the terms and conditions of the BSD License + which accompanies this distribution. The full text of the license may be found at + http://opensource.org/licenses/bsd-license.php + + THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, + WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. + +**/ + +#ifndef _SMM_IO_LIB_H_ +#define _SMM_IO_LIB_H_ + +/** + This function check if the MMIO resource is valid per processor architecture and + valid per platform design. + + @param BaseAddress The MMIO start address to be checked. + @param Length The MMIO length to be checked. + @param Owner A GUID representing the owner of the resource. + This GUID may be used by producer to correlate the device ownership of the resource. + NULL means no specific owner. + + @retval TRUE This MMIO resource is valid per processor architecture and valid per platform design. + @retval FALSE This MMIO resource is not valid per processor architecture or valid per platform design. +**/ +BOOLEAN +EFIAPI +SmmIsMmioValid ( + IN EFI_PHYSICAL_ADDRESS BaseAddress, + IN UINT64 Length, + IN EFI_GUID *Owner OPTIONAL + ); + +#endif + -- 2.7.4.windows.1 _______________________________________________ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel
