/** @file\r
Internal include file of DXE CPU IO Library.\r
It includes all necessary protocol/library class's header file\r
- for implementation of IoLib library instance. It is included \r
+ for implementation of IoLib library instance. It is included\r
all source code of this library instance.\r
- \r
- Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>\r
- This program and the accompanying materials\r
- are licensed and made available under the terms and conditions of the BSD License\r
- which accompanies this distribution. The full text of the license may be found at\r
- http://opensource.org/licenses/bsd-license.php\r
\r
- THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
- WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+ Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>\r
+ Copyright (c) 2017, AMD Incorporated. All rights reserved.<BR>\r
+\r
+ SPDX-License-Identifier: BSD-2-Clause-Patent\r
\r
Module Name: DxeCpuIoLibInternal.h\r
\r
Reads registers in the EFI CPU I/O space.\r
\r
Reads the I/O port specified by Port with registers width specified by Width.\r
- The read value is returned. If such operations are not supported, then ASSERT().\r
+ The read value is returned.\r
+\r
This function must guarantee that all I/O read and write operations are serialized.\r
+ If such operations are not supported, then ASSERT().\r
\r
@param Port The base address of the I/O operation.\r
The caller is responsible for aligning the Address if required.\r
UINT64\r
EFIAPI\r
IoReadWorker (\r
- IN UINTN Port,\r
- IN EFI_CPU_IO_PROTOCOL_WIDTH Width\r
+ IN UINTN Port,\r
+ IN EFI_CPU_IO_PROTOCOL_WIDTH Width\r
);\r
\r
/**\r
Writes registers in the EFI CPU I/O space.\r
\r
Writes the I/O port specified by Port with registers width and value specified by Width\r
- and Data respectively. Data is returned. If such operations are not supported, then ASSERT().\r
+ and Data respectively. Data is returned.\r
+\r
This function must guarantee that all I/O read and write operations are serialized.\r
+ If such operations are not supported, then ASSERT().\r
\r
@param Port The base address of the I/O operation.\r
The caller is responsible for aligning the Address if required.\r
UINT64\r
EFIAPI\r
IoWriteWorker (\r
- IN UINTN Port,\r
- IN EFI_CPU_IO_PROTOCOL_WIDTH Width,\r
- IN UINT64 Data\r
+ IN UINTN Port,\r
+ IN EFI_CPU_IO_PROTOCOL_WIDTH Width,\r
+ IN UINT64 Data\r
+ );\r
+\r
+/**\r
+ Reads registers in the EFI CPU I/O space.\r
+\r
+ Reads the I/O port specified by Port with registers width specified by Width.\r
+ The port is read Count times, and the read data is stored in the provided Buffer.\r
+\r
+ This function must guarantee that all I/O read and write operations are serialized.\r
+ If such operations are not supported, then ASSERT().\r
+\r
+ @param Port The base address of the I/O operation.\r
+ The caller is responsible for aligning the Address if required.\r
+ @param Width The width of the I/O operation.\r
+ @param Count The number of times to read I/O port.\r
+ @param Buffer The buffer to store the read data into.\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+IoReadFifoWorker (\r
+ IN UINTN Port,\r
+ IN EFI_CPU_IO_PROTOCOL_WIDTH Width,\r
+ IN UINTN Count,\r
+ IN VOID *Buffer\r
+ );\r
+\r
+/**\r
+ Writes registers in the EFI CPU I/O space.\r
+\r
+ Writes the I/O port specified by Port with registers width specified by Width.\r
+ The port is written Count times, and the write data is retrieved from the provided Buffer.\r
+\r
+ This function must guarantee that all I/O read and write operations are serialized.\r
+ If such operations are not supported, then ASSERT().\r
+\r
+ @param Port The base address of the I/O operation.\r
+ The caller is responsible for aligning the Address if required.\r
+ @param Width The width of the I/O operation.\r
+ @param Count The number of times to write I/O port.\r
+ @param Buffer The buffer to store the read data into.\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+IoWriteFifoWorker (\r
+ IN UINTN Port,\r
+ IN EFI_CPU_IO_PROTOCOL_WIDTH Width,\r
+ IN UINTN Count,\r
+ IN VOID *Buffer\r
);\r
\r
/**\r
The caller is responsible for aligning the Address if required.\r
@param Width The width of the I/O operation.\r
@param Data The value to write to the I/O port.\r
- \r
+\r
@return Data read from registers in the EFI system memory space.\r
\r
**/\r