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- /** @file
- Internal include file for the SMM CPU I/O Protocol.
- Copyright (c) 2009 - 2018, Intel Corporation. All rights reserved.<BR>
- SPDX-License-Identifier: BSD-2-Clause-Patent
- **/
- #ifndef _CPU_IO2_SMM_H_
- #define _CPU_IO2_SMM_H_
- #include <PiSmm.h>
- #include <Protocol/SmmCpuIo2.h>
- #include <Library/BaseLib.h>
- #include <Library/DebugLib.h>
- #include <Library/IoLib.h>
- #include <Library/MmServicesTableLib.h>
- #include <Library/BaseMemoryLib.h>
- #define MAX_IO_PORT_ADDRESS 0xFFFF
- /**
- Reads memory-mapped registers.
- The I/O operations are carried out exactly as requested. The caller is
- responsible for any alignment and I/O width issues that the bus, device,
- platform, or type of I/O might require.
- @param[in] This The EFI_SMM_CPU_IO2_PROTOCOL instance.
- @param[in] Width Signifies the width of the I/O operations.
- @param[in] Address The base address of the I/O operations. The caller is
- responsible for aligning the Address if required.
- @param[in] Count The number of I/O operations to perform.
- @param[out] Buffer For read operations, the destination buffer to store
- the results. For write operations, the source buffer
- from which to write data.
- @retval EFI_SUCCESS The data was read from or written to the device.
- @retval EFI_UNSUPPORTED The Address is not valid for this system.
- @retval EFI_INVALID_PARAMETER Width or Count, or both, were invalid.
- @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a
- lack of resources
- **/
- EFI_STATUS
- EFIAPI
- CpuMemoryServiceRead (
- IN CONST EFI_SMM_CPU_IO2_PROTOCOL *This,
- IN EFI_SMM_IO_WIDTH Width,
- IN UINT64 Address,
- IN UINTN Count,
- OUT VOID *Buffer
- );
- /**
- Writes memory-mapped registers.
- The I/O operations are carried out exactly as requested. The caller is
- responsible for any alignment and I/O width issues that the bus, device,
- platform, or type of I/O might require.
- @param[in] This The EFI_SMM_CPU_IO2_PROTOCOL instance.
- @param[in] Width Signifies the width of the I/O operations.
- @param[in] Address The base address of the I/O operations. The caller is
- responsible for aligning the Address if required.
- @param[in] Count The number of I/O operations to perform.
- @param[in] Buffer For read operations, the destination buffer to store
- the results. For write operations, the source buffer
- from which to write data.
- @retval EFI_SUCCESS The data was read from or written to the device.
- @retval EFI_UNSUPPORTED The Address is not valid for this system.
- @retval EFI_INVALID_PARAMETER Width or Count, or both, were invalid.
- @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a
- lack of resources
- **/
- EFI_STATUS
- EFIAPI
- CpuMemoryServiceWrite (
- IN CONST EFI_SMM_CPU_IO2_PROTOCOL *This,
- IN EFI_SMM_IO_WIDTH Width,
- IN UINT64 Address,
- IN UINTN Count,
- IN VOID *Buffer
- );
- /**
- Reads I/O registers.
- The I/O operations are carried out exactly as requested. The caller is
- responsible for any alignment and I/O width issues that the bus, device,
- platform, or type of I/O might require.
- @param[in] This The EFI_SMM_CPU_IO2_PROTOCOL instance.
- @param[in] Width Signifies the width of the I/O operations.
- @param[in] Address The base address of the I/O operations. The caller is
- responsible for aligning the Address if required.
- @param[in] Count The number of I/O operations to perform.
- @param[out] Buffer For read operations, the destination buffer to store
- the results. For write operations, the source buffer
- from which to write data.
- @retval EFI_SUCCESS The data was read from or written to the device.
- @retval EFI_UNSUPPORTED The Address is not valid for this system.
- @retval EFI_INVALID_PARAMETER Width or Count, or both, were invalid.
- @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a
- lack of resources
- **/
- EFI_STATUS
- EFIAPI
- CpuIoServiceRead (
- IN CONST EFI_SMM_CPU_IO2_PROTOCOL *This,
- IN EFI_SMM_IO_WIDTH Width,
- IN UINT64 Address,
- IN UINTN Count,
- OUT VOID *Buffer
- );
- /**
- Write I/O registers.
- The I/O operations are carried out exactly as requested. The caller is
- responsible for any alignment and I/O width issues that the bus, device,
- platform, or type of I/O might require.
- @param[in] This The EFI_SMM_CPU_IO2_PROTOCOL instance.
- @param[in] Width Signifies the width of the I/O operations.
- @param[in] Address The base address of the I/O operations. The caller is
- responsible for aligning the Address if required.
- @param[in] Count The number of I/O operations to perform.
- @param[in] Buffer For read operations, the destination buffer to store
- the results. For write operations, the source buffer
- from which to write data.
- @retval EFI_SUCCESS The data was read from or written to the device.
- @retval EFI_UNSUPPORTED The Address is not valid for this system.
- @retval EFI_INVALID_PARAMETER Width or Count, or both, were invalid.
- @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a
- lack of resources
- **/
- EFI_STATUS
- EFIAPI
- CpuIoServiceWrite (
- IN CONST EFI_SMM_CPU_IO2_PROTOCOL *This,
- IN EFI_SMM_IO_WIDTH Width,
- IN UINT64 Address,
- IN UINTN Count,
- IN VOID *Buffer
- );
- /**
- The module Entry Point SmmCpuIoProtocol driver
- @retval EFI_SUCCESS The entry point is executed successfully.
- @retval Other Some error occurs when executing this entry point.
- **/
- EFI_STATUS
- CommonCpuIo2Initialize (
- VOID
- );
- #endif
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