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Import BaseMemoryLibMmx;

Browse Source 
Import PeiMemoryLib;
Import BasePeCoffLib;
Import PeiSmbusLibSmbus2;
Import DxeMemoryLib;
Import HiiLib;
Update UefiLib to support multiple language codes;


git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@2886 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
yshang1
2007-06-29 05:29:46 +00:00
parent 273393ca7d
commit dd51a99341
44 changed files with 4787 additions and 109 deletions
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104
MdePkg/Library/DxeSmbusLib/DxeSmbusLib.c Normal file
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/** @file
Implementation of SmBusLib class library for PEI phase.
Copyright (c) 2006, Intel Corporation<BR>
All rights reserved. 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.
Module Name: DxeSmbusLib.c
**/
#include "InternalSmbusLib.h"
#include <Protocol/SmbusHc.h>
//
// Globle varible to cache pointer to Smbus protocol.
//
STATIC EFI_SMBUS_HC_PROTOCOL *mSmbus = NULL;
/**
The constructor function caches the pointer to Smbus protocol.
The constructor function locates Smbus protocol from protocol database.
It will ASSERT() if that operation fails and it will always return EFI_SUCCESS.
@param ImageHandle The firmware allocated handle for the EFI image.
@param SystemTable A pointer to the EFI System Table.
@retval EFI_SUCCESS The constructor always returns EFI_SUCCESS.
**/
EFI_STATUS
EFIAPI
SmbusLibConstructor (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_STATUS Status;
Status = gBS->LocateProtocol (&gEfiSmbusHcProtocolGuid, NULL, (VOID**) &mSmbus);
ASSERT_EFI_ERROR (Status);
ASSERT (mSmbus != NULL);
return Status;
}
/**
Executes an SMBus operation to an SMBus controller.
This function provides a standard way to execute Smbus script
as defined in the SmBus Specification. The data can either be of
the Length byte, word, or a block of data.
@param SmbusOperation Signifies which particular SMBus hardware protocol instance that it will use to
execute the SMBus transactions.
@param SmBusAddress Address that encodes the SMBUS Slave Address,
SMBUS Command, SMBUS Data Length, and PEC.
@param Length Signifies the number of bytes that this operation will do. The maximum number of
bytes can be revision specific and operation specific.
@param Buffer Contains the value of data to execute to the SMBus slave device. Not all operations
require this argument. The length of this buffer is identified by Length.
@param Status Return status for the executed command.
This is an optional parameter and may be NULL.
@return The actual number of bytes that are executed for this operation..
**/
UINTN
InternalSmBusExec (
IN EFI_SMBUS_OPERATION SmbusOperation,
IN UINTN SmBusAddress,
IN UINTN Length,
IN OUT VOID *Buffer,
OUT RETURN_STATUS *Status OPTIONAL
)
{
RETURN_STATUS ReturnStatus;
EFI_SMBUS_DEVICE_ADDRESS SmbusDeviceAddress;
SmbusDeviceAddress.SmbusDeviceAddress = SMBUS_LIB_SLAVE_ADDRESS (SmBusAddress);
ReturnStatus = mSmbus->Execute (
mSmbus,
SmbusDeviceAddress,
SMBUS_LIB_COMMAND (SmBusAddress),
SmbusOperation,
SMBUS_LIB_PEC (SmBusAddress),
&Length,
Buffer
);
if (Status != NULL) {
*Status = ReturnStatus;
}
return Length;
}

58
MdePkg/Library/DxeSmbusLib/DxeSmbusLib.msa Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<ModuleSurfaceArea xmlns="http://www.TianoCore.org/2006/Edk2.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<MsaHeader>
<ModuleName>DxeSmbusLib</ModuleName>
<ModuleType>DXE_DRIVER</ModuleType>
<GuidValue>07720769-A7D0-4a8d-BE41-71CC18EB3338</GuidValue>
<Version>1.0</Version>
<Abstract>Component description file for Dxe Smbus Library.</Abstract>
<Description>SMBUS Library that layers on top of the SMBUS Protocol.</Description>
<Copyright>Copyright (c) 2006, Intel Corporation</Copyright>
<License>All rights reserved. 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.</License>
<Specification>FRAMEWORK_BUILD_PACKAGING_SPECIFICATION 0x00000052</Specification>
</MsaHeader>
<ModuleDefinitions>
<SupportedArchitectures>IA32 X64 IPF EBC</SupportedArchitectures>
<BinaryModule>false</BinaryModule>
<OutputFileBasename>DxeSmbusLib</OutputFileBasename>
</ModuleDefinitions>
<LibraryClassDefinitions>
<LibraryClass Usage="ALWAYS_PRODUCED" SupModuleList="DXE_DRIVER DXE_RUNTIME_DRIVER DXE_SAL_DRIVER DXE_SMM_DRIVER UEFI_APPLICATION UEFI_DRIVER">
<Keyword>SmbusLib</Keyword>
</LibraryClass>
<LibraryClass Usage="ALWAYS_CONSUMED">
<Keyword>DebugLib</Keyword>
</LibraryClass>
<LibraryClass Usage="ALWAYS_CONSUMED">
<Keyword>UefiBootServicesTableLib</Keyword>
</LibraryClass>
<LibraryClass Usage="ALWAYS_CONSUMED">
<Keyword>BaseMemoryLib</Keyword>
</LibraryClass>
</LibraryClassDefinitions>
<SourceFiles>
<Filename>InternalSmbusLib.h</Filename>
<Filename>DxeSmbusLib.c</Filename>
<Filename>SmbusLib.c</Filename>
</SourceFiles>
<PackageDependencies>
<Package PackageGuid="5e0e9358-46b6-4ae2-8218-4ab8b9bbdcec"/>
</PackageDependencies>
<Protocols>
<Protocol Usage="ALWAYS_CONSUMED">
<ProtocolCName>gEfiSmbusProtocolGuid</ProtocolCName>
</Protocol>
</Protocols>
<Externs>
<Specification>EFI_SPECIFICATION_VERSION 0x00020000</Specification>
<Specification>EDK_RELEASE_VERSION 0x00020000</Specification>
<Extern>
<Constructor>SmbusLibConstructor</Constructor>
</Extern>
</Externs>
</ModuleSurfaceArea>

60
MdePkg/Library/DxeSmbusLib/InternalSmbusLib.h Normal file
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/** @file
Internal header file for Smbus library.
Copyright (c) 2006, Intel Corporation<BR>
All rights reserved. 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 __INTERNAL_SMBUS_LIB_H
#define __INTERNAL_SMBUS_LIB_H
#include <IndustryStandard/Smbus.h>
#define SMBUS_LIB_SLAVE_ADDRESS(SmBusAddress) (((SmBusAddress) >> 1) & 0x7f)
#define SMBUS_LIB_COMMAND(SmBusAddress) (((SmBusAddress) >> 8) & 0xff)
#define SMBUS_LIB_LENGTH(SmBusAddress) (((SmBusAddress) >> 16) & 0x3f)
#define SMBUS_LIB_PEC(SmBusAddress) ((BOOLEAN) (((SmBusAddress) & SMBUS_LIB_PEC_BIT) != 0))
#define SMBUS_LIB_RESEARVED(SmBusAddress) ((SmBusAddress) & ~(((1 << 22) - 2) | SMBUS_LIB_PEC_BIT))
//
// Declaration for internal functions
//
/**
Executes an SMBus operation to an SMBus controller.
This function provides a standard way to execute Smbus script
as defined in the SmBus Specification. The data can either be of
the Length byte, word, or a block of data.
@param SmbusOperation Signifies which particular SMBus hardware protocol instance that it will use to
execute the SMBus transactions.
@param SmBusAddress Address that encodes the SMBUS Slave Address,
SMBUS Command, SMBUS Data Length, and PEC.
@param Length Signifies the number of bytes that this operation will do. The maximum number of
bytes can be revision specific and operation specific.
@param Buffer Contains the value of data to execute to the SMBus slave device. Not all operations
require this argument. The length of this buffer is identified by Length.
@param Status Return status for the executed command.
This is an optional parameter and may be NULL.
@return The actual number of bytes that are executed for this operation.
**/
UINTN
InternalSmBusExec (
IN EFI_SMBUS_OPERATION SmbusOperation,
IN UINTN SmBusAddress,
IN UINTN Length,
IN OUT VOID *Buffer,
OUT RETURN_STATUS *Status OPTIONAL
);
#endif

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MdePkg/Library/DxeSmbusLib/SmbusLib.c Normal file
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/** @file
Implementation of SmBusLib class library for PEI phase.
Copyright (c) 2006, Intel Corporation<BR>
All rights reserved. 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.
Module Name: SmbusLib.c
**/
#include "InternalSmbusLib.h"
/**
Executes an SMBUS quick read command.
Executes an SMBUS quick read command on the SMBUS device specified by SmBusAddress.
Only the SMBUS slave address field of SmBusAddress is required.
If Status is not NULL, then the status of the executed command is returned in Status.
If PEC is set in SmBusAddress, then ASSERT().
If Command in SmBusAddress is not zero, then ASSERT().
If Length in SmBusAddress is not zero, then ASSERT().
If any reserved bits of SmBusAddress are set, then ASSERT().
@param SmBusAddress Address that encodes the SMBUS Slave Address,
SMBUS Command, SMBUS Data Length, and PEC.
@param Status Return status for the executed command.
This is an optional parameter and may be NULL.
**/
VOID
EFIAPI
SmBusQuickRead (
IN UINTN SmBusAddress,
OUT RETURN_STATUS *Status OPTIONAL
)
{
ASSERT (!SMBUS_LIB_PEC (SmBusAddress));
ASSERT (SMBUS_LIB_COMMAND (SmBusAddress) == 0);
ASSERT (SMBUS_LIB_LENGTH (SmBusAddress) == 0);
ASSERT (SMBUS_LIB_RESEARVED (SmBusAddress) == 0);
InternalSmBusExec (EfiSmbusQuickRead, SmBusAddress, 0, NULL, Status);
}
/**
Executes an SMBUS quick write command.
Executes an SMBUS quick write command on the SMBUS device specified by SmBusAddress.
Only the SMBUS slave address field of SmBusAddress is required.
If Status is not NULL, then the status of the executed command is returned in Status.
If PEC is set in SmBusAddress, then ASSERT().
If Command in SmBusAddress is not zero, then ASSERT().
If Length in SmBusAddress is not zero, then ASSERT().
If any reserved bits of SmBusAddress are set, then ASSERT().
@param SmBusAddress Address that encodes the SMBUS Slave Address,
SMBUS Command, SMBUS Data Length, and PEC.
@param Status Return status for the executed command.
This is an optional parameter and may be NULL.
**/
VOID
EFIAPI
SmBusQuickWrite (
IN UINTN SmBusAddress,
OUT RETURN_STATUS *Status OPTIONAL
)
{
ASSERT (!SMBUS_LIB_PEC (SmBusAddress));
ASSERT (SMBUS_LIB_COMMAND (SmBusAddress) == 0);
ASSERT (SMBUS_LIB_LENGTH (SmBusAddress) == 0);
ASSERT (SMBUS_LIB_RESEARVED (SmBusAddress) == 0);
InternalSmBusExec (EfiSmbusQuickWrite, SmBusAddress, 0, NULL, Status);
}
/**
Executes an SMBUS receive byte command.
Executes an SMBUS receive byte command on the SMBUS device specified by SmBusAddress.
Only the SMBUS slave address field of SmBusAddress is required.
The byte received from the SMBUS is returned.
If Status is not NULL, then the status of the executed command is returned in Status.
If Command in SmBusAddress is not zero, then ASSERT().
If Length in SmBusAddress is not zero, then ASSERT().
If any reserved bits of SmBusAddress are set, then ASSERT().
@param SmBusAddress Address that encodes the SMBUS Slave Address,
SMBUS Command, SMBUS Data Length, and PEC.
@param Status Return status for the executed command.
This is an optional parameter and may be NULL.
@return The byte received from the SMBUS.
**/
UINT8
EFIAPI
SmBusReceiveByte (
IN UINTN SmBusAddress,
OUT RETURN_STATUS *Status OPTIONAL
)
{
UINT8 Byte;
ASSERT (SMBUS_LIB_COMMAND (SmBusAddress) == 0);
ASSERT (SMBUS_LIB_LENGTH (SmBusAddress) == 0);
ASSERT (SMBUS_LIB_RESEARVED (SmBusAddress) == 0);
InternalSmBusExec (EfiSmbusReceiveByte, SmBusAddress, 1, &Byte, Status);
return Byte;
}
/**
Executes an SMBUS send byte command.
Executes an SMBUS send byte command on the SMBUS device specified by SmBusAddress.
The byte specified by Value is sent.
Only the SMBUS slave address field of SmBusAddress is required. Value is returned.
If Status is not NULL, then the status of the executed command is returned in Status.
If Command in SmBusAddress is not zero, then ASSERT().
If Length in SmBusAddress is not zero, then ASSERT().
If any reserved bits of SmBusAddress are set, then ASSERT().
@param SmBusAddress Address that encodes the SMBUS Slave Address,
SMBUS Command, SMBUS Data Length, and PEC.
@param Value The 8-bit value to send.
@param Status Return status for the executed command.
This is an optional parameter and may be NULL.
@return The parameter of Value.
**/
UINT8
EFIAPI
SmBusSendByte (
IN UINTN SmBusAddress,
IN UINT8 Value,
OUT RETURN_STATUS *Status OPTIONAL
)
{
UINT8 Byte;
ASSERT (SMBUS_LIB_COMMAND (SmBusAddress) == 0);
ASSERT (SMBUS_LIB_LENGTH (SmBusAddress) == 0);
ASSERT (SMBUS_LIB_RESEARVED (SmBusAddress) == 0);
Byte = Value;
InternalSmBusExec (EfiSmbusSendByte, SmBusAddress, 1, &Byte, Status);
return Value;
}
/**
Executes an SMBUS read data byte command.
Executes an SMBUS read data byte command on the SMBUS device specified by SmBusAddress.
Only the SMBUS slave address and SMBUS command fields of SmBusAddress are required.
The 8-bit value read from the SMBUS is returned.
If Status is not NULL, then the status of the executed command is returned in Status.
If Length in SmBusAddress is not zero, then ASSERT().
If any reserved bits of SmBusAddress are set, then ASSERT().
@param SmBusAddress Address that encodes the SMBUS Slave Address,
SMBUS Command, SMBUS Data Length, and PEC.
@param Status Return status for the executed command.
This is an optional parameter and may be NULL.
@return The byte read from the SMBUS.
**/
UINT8
EFIAPI
SmBusReadDataByte (
IN UINTN SmBusAddress,
OUT RETURN_STATUS *Status OPTIONAL
)
{
UINT8 Byte;
ASSERT (SMBUS_LIB_LENGTH (SmBusAddress) == 0);
ASSERT (SMBUS_LIB_RESEARVED (SmBusAddress) == 0);
InternalSmBusExec (EfiSmbusReadByte, SmBusAddress, 1, &Byte, Status);
return Byte;
}
/**
Executes an SMBUS write data byte command.
Executes an SMBUS write data byte command on the SMBUS device specified by SmBusAddress.
The 8-bit value specified by Value is written.
Only the SMBUS slave address and SMBUS command fields of SmBusAddress are required.
Value is returned.
If Status is not NULL, then the status of the executed command is returned in Status.
If Length in SmBusAddress is not zero, then ASSERT().
If any reserved bits of SmBusAddress are set, then ASSERT().
@param SmBusAddress Address that encodes the SMBUS Slave Address,
SMBUS Command, SMBUS Data Length, and PEC.
@param Value The 8-bit value to write.
@param Status Return status for the executed command.
This is an optional parameter and may be NULL.
@return The parameter of Value.
**/
UINT8
EFIAPI
SmBusWriteDataByte (
IN UINTN SmBusAddress,
IN UINT8 Value,
OUT RETURN_STATUS *Status OPTIONAL
)
{
UINT8 Byte;
ASSERT (SMBUS_LIB_LENGTH (SmBusAddress) == 0);
ASSERT (SMBUS_LIB_RESEARVED (SmBusAddress) == 0);
Byte = Value;
InternalSmBusExec (EfiSmbusWriteByte, SmBusAddress, 1, &Byte, Status);
return Value;
}
/**
Executes an SMBUS read data word command.
Executes an SMBUS read data word command on the SMBUS device specified by SmBusAddress.
Only the SMBUS slave address and SMBUS command fields of SmBusAddress are required.
The 16-bit value read from the SMBUS is returned.
If Status is not NULL, then the status of the executed command is returned in Status.
If Length in SmBusAddress is not zero, then ASSERT().
If any reserved bits of SmBusAddress are set, then ASSERT().
@param SmBusAddress Address that encodes the SMBUS Slave Address,
SMBUS Command, SMBUS Data Length, and PEC.
@param Status Return status for the executed command.
This is an optional parameter and may be NULL.
@return The byte read from the SMBUS.
**/
UINT16
EFIAPI
SmBusReadDataWord (
IN UINTN SmBusAddress,
OUT RETURN_STATUS *Status OPTIONAL
)
{
UINT16 Word;
ASSERT (SMBUS_LIB_LENGTH (SmBusAddress) == 0);
ASSERT (SMBUS_LIB_RESEARVED (SmBusAddress) == 0);
InternalSmBusExec (EfiSmbusReadWord, SmBusAddress, 2, &Word, Status);
return Word;
}
/**
Executes an SMBUS write data word command.
Executes an SMBUS write data word command on the SMBUS device specified by SmBusAddress.
The 16-bit value specified by Value is written.
Only the SMBUS slave address and SMBUS command fields of SmBusAddress are required.
Value is returned.
If Status is not NULL, then the status of the executed command is returned in Status.
If Length in SmBusAddress is not zero, then ASSERT().
If any reserved bits of SmBusAddress are set, then ASSERT().
@param SmBusAddress Address that encodes the SMBUS Slave Address,
SMBUS Command, SMBUS Data Length, and PEC.
@param Value The 16-bit value to write.
@param Status Return status for the executed command.
This is an optional parameter and may be NULL.
@return The parameter of Value.
**/
UINT16
EFIAPI
SmBusWriteDataWord (
IN UINTN SmBusAddress,
IN UINT16 Value,
OUT RETURN_STATUS *Status OPTIONAL
)
{
UINT16 Word;
ASSERT (SMBUS_LIB_LENGTH (SmBusAddress) == 0);
ASSERT (SMBUS_LIB_RESEARVED (SmBusAddress) == 0);
Word = Value;
InternalSmBusExec (EfiSmbusWriteWord, SmBusAddress, 2, &Word, Status);
return Value;
}
/**
Executes an SMBUS process call command.
Executes an SMBUS process call command on the SMBUS device specified by SmBusAddress.
The 16-bit value specified by Value is written.
Only the SMBUS slave address and SMBUS command fields of SmBusAddress are required.
The 16-bit value returned by the process call command is returned.
If Status is not NULL, then the status of the executed command is returned in Status.
If Length in SmBusAddress is not zero, then ASSERT().
If any reserved bits of SmBusAddress are set, then ASSERT().
@param SmBusAddress Address that encodes the SMBUS Slave Address,
SMBUS Command, SMBUS Data Length, and PEC.
@param Value The 16-bit value to write.
@param Status Return status for the executed command.
This is an optional parameter and may be NULL.
@return The 16-bit value returned by the process call command.
**/
UINT16
EFIAPI
SmBusProcessCall (
IN UINTN SmBusAddress,
IN UINT16 Value,
OUT RETURN_STATUS *Status OPTIONAL
)
{
ASSERT (SMBUS_LIB_LENGTH (SmBusAddress) == 0);
ASSERT (SMBUS_LIB_RESEARVED (SmBusAddress) == 0);
InternalSmBusExec (EfiSmbusProcessCall, SmBusAddress, 2, &Value, Status);
return Value;
}
/**
Executes an SMBUS read block command.
Executes an SMBUS read block command on the SMBUS device specified by SmBusAddress.
Only the SMBUS slave address and SMBUS command fields of SmBusAddress are required.
Bytes are read from the SMBUS and stored in Buffer.
The number of bytes read is returned, and will never return a value larger than 32-bytes.
If Status is not NULL, then the status of the executed command is returned in Status.
It is the caller's responsibility to make sure Buffer is large enough for the total number of bytes read.
SMBUS supports a maximum transfer size of 32 bytes, so Buffer does not need to be any larger than 32 bytes.
If Length in SmBusAddress is not zero, then ASSERT().
If Buffer is NULL, then ASSERT().
If any reserved bits of SmBusAddress are set, then ASSERT().
@param SmBusAddress Address that encodes the SMBUS Slave Address,
SMBUS Command, SMBUS Data Length, and PEC.
@param Buffer Pointer to the buffer to store the bytes read from the SMBUS.
@param Status Return status for the executed command.
This is an optional parameter and may be NULL.
@return The number of bytes read.
**/
UINTN
EFIAPI
SmBusReadBlock (
IN UINTN SmBusAddress,
OUT VOID *Buffer,
OUT RETURN_STATUS *Status OPTIONAL
)
{
ASSERT (Buffer != NULL);
ASSERT (SMBUS_LIB_LENGTH (SmBusAddress) == 0);
ASSERT (SMBUS_LIB_RESEARVED (SmBusAddress) == 0);
return InternalSmBusExec (EfiSmbusReadBlock, SmBusAddress, 0x20, Buffer, Status);
}
/**
Executes an SMBUS write block command.
Executes an SMBUS write block command on the SMBUS device specified by SmBusAddress.
The SMBUS slave address, SMBUS command, and SMBUS length fields of SmBusAddress are required.
Bytes are written to the SMBUS from Buffer.
The number of bytes written is returned, and will never return a value larger than 32-bytes.
If Status is not NULL, then the status of the executed command is returned in Status.
If Length in SmBusAddress is zero or greater than 32, then ASSERT().
If Buffer is NULL, then ASSERT().
If any reserved bits of SmBusAddress are set, then ASSERT().
@param SmBusAddress Address that encodes the SMBUS Slave Address,
SMBUS Command, SMBUS Data Length, and PEC.
@param Buffer Pointer to the buffer to store the bytes read from the SMBUS.
@param Status Return status for the executed command.
This is an optional parameter and may be NULL.
@return The number of bytes written.
**/
UINTN
EFIAPI
SmBusWriteBlock (
IN UINTN SmBusAddress,
OUT VOID *Buffer,
OUT RETURN_STATUS *Status OPTIONAL
)
{
UINTN Length;
ASSERT (Buffer != NULL);
ASSERT (SMBUS_LIB_LENGTH (SmBusAddress) >= 1);
ASSERT (SMBUS_LIB_LENGTH (SmBusAddress) <= 32);
ASSERT (SMBUS_LIB_RESEARVED (SmBusAddress) == 0);
Length = SMBUS_LIB_LENGTH (SmBusAddress);
return InternalSmBusExec (EfiSmbusWriteBlock, SmBusAddress, Length, Buffer, Status);
}
/**
Executes an SMBUS block process call command.
Executes an SMBUS block process call command on the SMBUS device specified by SmBusAddress.
The SMBUS slave address, SMBUS command, and SMBUS length fields of SmBusAddress are required.
Bytes are written to the SMBUS from WriteBuffer. Bytes are then read from the SMBUS into ReadBuffer.
If Status is not NULL, then the status of the executed command is returned in Status.
It is the caller's responsibility to make sure ReadBuffer is large enough for the total number of bytes read.
SMBUS supports a maximum transfer size of 32 bytes, so Buffer does not need to be any larger than 32 bytes.
If Length in SmBusAddress is zero or greater than 32, then ASSERT().
If WriteBuffer is NULL, then ASSERT().
If ReadBuffer is NULL, then ASSERT().
If any reserved bits of SmBusAddress are set, then ASSERT().
@param SmBusAddress Address that encodes the SMBUS Slave Address,
SMBUS Command, SMBUS Data Length, and PEC.
@param WriteBuffer Pointer to the buffer of bytes to write to the SMBUS.
@param ReadBuffer Pointer to the buffer of bytes to read from the SMBUS.
@param Status Return status for the executed command.
This is an optional parameter and may be NULL.
@return The number of bytes written.
**/
UINTN
EFIAPI
SmBusBlockProcessCall (
IN UINTN SmBusAddress,
IN VOID *WriteBuffer,
OUT VOID *ReadBuffer,
OUT RETURN_STATUS *Status OPTIONAL
)
{
UINTN Length;
ASSERT (WriteBuffer != NULL);
ASSERT (ReadBuffer != NULL);
ASSERT (SMBUS_LIB_LENGTH (SmBusAddress) >= 1);
ASSERT (SMBUS_LIB_LENGTH (SmBusAddress) <= 32);
ASSERT (SMBUS_LIB_RESEARVED (SmBusAddress) == 0);
Length = SMBUS_LIB_LENGTH (SmBusAddress);
//
// Assuming that ReadBuffer is large enough to save another memory copy.
//
ReadBuffer = CopyMem (ReadBuffer, WriteBuffer, Length);
return InternalSmBusExec (EfiSmbusBWBRProcessCall, SmBusAddress, Length, ReadBuffer, Status);
}