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MdePkg/DxeIoLibCpuIo2: Add new Fifo routines in IoLib class

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Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
Signed-off-by: Leo Duran  <leo.duran@amd.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
This commit is contained in:
Leo Duran
2017-01-14 04:09:55 +08:00
committed by Liming Gao
parent afb84b5f92
commit 61e1deece1
2 changed files with 320 additions and 11 deletions
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71
MdePkg/Library/DxeIoLibCpuIo2/DxeCpuIo2LibInternal.h
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@@ -2,6 +2,8 @@
Internal include file of DXE CPU IO2 Library.
Copyright (c) 2010, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2017, AMD Incorporated. 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
@@ -29,8 +31,10 @@
Reads registers in the EFI CPU I/O space.
Reads the I/O port specified by Port with registers width specified by Width.
The read value is returned. If such operations are not supported, then ASSERT().
The read value is returned.
This function must guarantee that all I/O read and write operations are serialized.
If such operations are not supported, then ASSERT().
@param Port The base address of the I/O operation.
The caller is responsible for aligning the Address if required.
@@ -42,16 +46,18 @@
UINT64
EFIAPI
IoReadWorker (
IN UINTN Port,
IN EFI_CPU_IO_PROTOCOL_WIDTH Width
IN UINTN Port,
IN EFI_CPU_IO_PROTOCOL_WIDTH Width
);
/**
Writes registers in the EFI CPU I/O space.
Writes the I/O port specified by Port with registers width and value specified by Width
and Data respectively. Data is returned. If such operations are not supported, then ASSERT().
and Data respectively. Data is returned.
This function must guarantee that all I/O read and write operations are serialized.
If such operations are not supported, then ASSERT().
@param Port The base address of the I/O operation.
The caller is responsible for aligning the Address if required.
@@ -64,9 +70,59 @@ IoReadWorker (
UINT64
EFIAPI
IoWriteWorker (
IN UINTN Port,
IN EFI_CPU_IO_PROTOCOL_WIDTH Width,
IN UINT64 Data
IN UINTN Port,
IN EFI_CPU_IO_PROTOCOL_WIDTH Width,
IN UINT64 Data
);
/**
Reads registers in the EFI CPU I/O space.
Reads the I/O port specified by Port with registers width specified by Width.
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 such operations are not supported, then ASSERT().
@param Port The base address of the I/O operation.
The caller is responsible for aligning the Address if required.
@param Width The width of the I/O operation.
@param Count The number of times to read I/O port.
@param Buffer The buffer to store the read data into.
**/
VOID
EFIAPI
IoReadFifoWorker (
IN UINTN Port,
IN EFI_CPU_IO_PROTOCOL_WIDTH Width,
IN UINTN Count,
IN VOID *Buffer
);
/**
Writes registers in the EFI CPU I/O space.
Writes the I/O port specified by Port with registers width specified by Width.
The port is written Count times, and the write data is retrieved from the provided Buffer.
This function must guarantee that all I/O read and write operations are serialized.
If such operations are not supported, then ASSERT().
@param Port The base address of the I/O operation.
The caller is responsible for aligning the Address if required.
@param Width The width of the I/O operation.
@param Count The number of times to write I/O port.
@param Buffer The buffer to store the read data into.
**/
VOID
EFIAPI
IoWriteFifoWorker (
IN UINTN Port,
IN EFI_CPU_IO_PROTOCOL_WIDTH Width,
IN UINTN Count,
IN VOID *Buffer
);
/**
@@ -79,6 +135,7 @@ IoWriteWorker (
@param Address The MMIO register to read.
The caller is responsible for aligning the Address if required.
@param Width The width of the I/O operation.
@param Count The number of times to write I/O port.
@return Data read from registers in the EFI system memory space.